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Viewing changes to dracut-module/password-agent.c

  • Committer: Teddy Hogeborn
  • Date: 2019-08-02 23:02:58 UTC
  • mto: This revision was merged to the branch mainline in revision 386.
  • Revision ID: teddy@recompile.se-20190802230258-phklljvwyrpu6g6o
Update Python 3 compatibility

When running the server on Python 3, get rid of a few deprecation
warnings.

* mandos (main): Use only "configparser.Configparser", and only fall
                 back to configparser.SafeConfigParser on Python
                 versions lower than 3.2.  Also, only call
                 GLib.threads_init() when using a PyGObject version
                 lower than 3.10.2.

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1
/* -*- mode: c; coding: utf-8; after-save-hook: (lambda () (let* ((find-build-directory (lambda (try-directory &optional base-directory) (let ((base-directory (or base-directory try-directory))) (cond ((equal try-directory "/") base-directory) ((file-readable-p (concat (file-name-as-directory try-directory) "Makefile")) try-directory) ((funcall find-build-directory (directory-file-name (file-name-directory try-directory)) base-directory)))))) (build-directory (funcall find-build-directory (buffer-file-name))) (local-build-directory (if (fboundp 'file-local-name) (file-local-name build-directory) (or (file-remote-p build-directory 'localname) build-directory))) (command (file-relative-name (file-name-sans-extension (buffer-file-name)) build-directory))) (pcase (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (let ((qbdir (shell-quote-argument local-build-directory)) (qcmd (shell-quote-argument command))) (format "cd %s && CFLAGS=-Werror make --silent %s && %s --test --verbose" qbdir qcmd qcmd)) nil "*Test*")) (0 (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w)))) (_ (with-current-buffer "*Test*" (compilation-mode) (cd-absolute build-directory)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); -*- */
 
2
/*
 
3
 * Mandos password agent - Simple password agent to run Mandos client
 
4
 *
 
5
 * Copyright © 2019 Teddy Hogeborn
 
6
 * Copyright © 2019 Björn Påhlsson
 
7
 * 
 
8
 * This file is part of Mandos.
 
9
 * 
 
10
 * Mandos is free software: you can redistribute it and/or modify it
 
11
 * under the terms of the GNU General Public License as published by
 
12
 * the Free Software Foundation, either version 3 of the License, or
 
13
 * (at your option) any later version.
 
14
 * 
 
15
 * Mandos is distributed in the hope that it will be useful, but
 
16
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 
17
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 
18
 * General Public License for more details.
 
19
 * 
 
20
 * You should have received a copy of the GNU General Public License
 
21
 * along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
 
22
 * 
 
23
 * Contact the authors at <mandos@recompile.se>.
 
24
 */
 
25
 
 
26
#define _GNU_SOURCE
 
27
#include <inttypes.h>           /* uintmax_t, PRIuMAX, PRIdMAX,
 
28
                                   intmax_t, uint32_t, SCNx32,
 
29
                                   SCNuMAX, SCNxMAX */
 
30
#include <stddef.h>             /* size_t */
 
31
#include <sys/types.h>          /* pid_t, uid_t, gid_t, getuid(),
 
32
                                   getpid() */
 
33
#include <stdbool.h>            /* bool, true, false */
 
34
#include <signal.h>             /* struct sigaction, sigset_t,
 
35
                                   sigemptyset(), sigaddset(),
 
36
                                   SIGCHLD, pthread_sigmask(),
 
37
                                   SIG_BLOCK, SIG_SETMASK, SA_RESTART,
 
38
                                   SA_NOCLDSTOP, sigfillset(), kill(),
 
39
                                   SIGTERM, sigdelset(), SIGKILL,
 
40
                                   NSIG, sigismember(), SA_ONSTACK,
 
41
                                   SIG_DFL, SIG_IGN, SIGINT, SIGQUIT,
 
42
                                   SIGHUP, SIGSTOP, SIG_UNBLOCK */
 
43
#include <stdlib.h>             /* EXIT_SUCCESS, EXIT_FAILURE,
 
44
                                   malloc(), free(), strtoumax(),
 
45
                                   realloc(), setenv(), calloc(),
 
46
                                   mkdtemp(), mkostemp() */
 
47
#include <iso646.h>             /* not, or, and, xor */
 
48
#include <error.h>              /* error() */
 
49
#include <sysexits.h>           /* EX_USAGE, EX_OSERR, EX_OSFILE */
 
50
#include <errno.h>              /* errno, error_t, EACCES,
 
51
                                   ENAMETOOLONG, ENOENT, EEXIST,
 
52
                                   ECHILD, EPERM, ENOMEM, EAGAIN,
 
53
                                   EINTR, ENOBUFS, EADDRINUSE,
 
54
                                   ECONNREFUSED, ECONNRESET,
 
55
                                   ETOOMANYREFS, EMSGSIZE, EBADF,
 
56
                                   EINVAL */
 
57
#include <string.h>             /* strdup(), memcpy(),
 
58
                                   explicit_bzero(), memset(),
 
59
                                   strcmp(), strlen(), strncpy(),
 
60
                                   memcmp(), basename() */
 
61
#include <argz.h>               /* argz_create(), argz_count(),
 
62
                                   argz_extract(), argz_next(),
 
63
                                   argz_add() */
 
64
#include <sys/epoll.h>          /* epoll_create1(), EPOLL_CLOEXEC,
 
65
                                   epoll_ctl(), EPOLL_CTL_ADD,
 
66
                                   struct epoll_event, EPOLLIN,
 
67
                                   EPOLLRDHUP, EPOLLOUT,
 
68
                                   epoll_pwait() */
 
69
#include <time.h>               /* struct timespec, clock_gettime(),
 
70
                                   CLOCK_MONOTONIC */
 
71
#include <argp.h>               /* struct argp_option, OPTION_HIDDEN,
 
72
                                   OPTION_ALIAS, struct argp_state,
 
73
                                   ARGP_ERR_UNKNOWN, ARGP_KEY_ARGS,
 
74
                                   struct argp, argp_parse(),
 
75
                                   ARGP_NO_EXIT */
 
76
#include <unistd.h>             /* uid_t, gid_t, close(), pipe2(),
 
77
                                   fork(), _exit(), dup2(),
 
78
                                   STDOUT_FILENO, setresgid(),
 
79
                                   setresuid(), execv(), ssize_t,
 
80
                                   read(), dup3(), getuid(), dup(),
 
81
                                   STDERR_FILENO, pause(), write(),
 
82
                                   rmdir(), unlink(), getpid() */
 
83
#include <sys/mman.h>           /* munlock(), mlock() */
 
84
#include <fcntl.h>              /* O_CLOEXEC, O_NONBLOCK, fcntl(),
 
85
                                   F_GETFD, F_GETFL, FD_CLOEXEC,
 
86
                                   open(), O_WRONLY, O_RDONLY */
 
87
#include <sys/wait.h>           /* waitpid(), WNOHANG, WIFEXITED(),
 
88
                                   WEXITSTATUS() */
 
89
#include <limits.h>             /* PIPE_BUF, NAME_MAX, INT_MAX */
 
90
#include <sys/inotify.h>        /* inotify_init1(), IN_NONBLOCK,
 
91
                                   IN_CLOEXEC, inotify_add_watch(),
 
92
                                   IN_CLOSE_WRITE, IN_MOVED_TO,
 
93
                                   IN_DELETE, struct inotify_event */
 
94
#include <fnmatch.h>            /* fnmatch(), FNM_FILE_NAME */
 
95
#include <stdio.h>              /* asprintf(), FILE, fopen(),
 
96
                                   getline(), sscanf(), feof(),
 
97
                                   ferror(), fclose(), stderr,
 
98
                                   rename(), fdopen(), fprintf(),
 
99
                                   fscanf() */
 
100
#include <glib.h>    /* GKeyFile, g_key_file_free(), g_key_file_new(),
 
101
                        GError, g_key_file_load_from_file(),
 
102
                        G_KEY_FILE_NONE, TRUE, G_FILE_ERROR_NOENT,
 
103
                        g_key_file_get_string(), guint64,
 
104
                        g_key_file_get_uint64(),
 
105
                        G_KEY_FILE_ERROR_KEY_NOT_FOUND, gconstpointer,
 
106
                        g_assert_true(), g_assert_nonnull(),
 
107
                        g_assert_null(), g_assert_false(),
 
108
                        g_assert_cmpint(), g_assert_cmpuint(),
 
109
                        g_test_skip(), g_assert_cmpstr(),
 
110
                        g_test_init(), g_test_add(), g_test_run(),
 
111
                        GOptionContext, g_option_context_new(),
 
112
                        g_option_context_set_help_enabled(), FALSE,
 
113
                        g_option_context_set_ignore_unknown_options(),
 
114
                        gboolean, GOptionEntry, G_OPTION_ARG_NONE,
 
115
                        g_option_context_add_main_entries(),
 
116
                        g_option_context_parse(),
 
117
                        g_option_context_free(), g_error() */
 
118
#include <sys/un.h>             /* struct sockaddr_un, SUN_LEN */
 
119
#include <sys/socket.h>         /* AF_LOCAL, socket(), PF_LOCAL,
 
120
                                   SOCK_DGRAM, SOCK_NONBLOCK,
 
121
                                   SOCK_CLOEXEC, connect(),
 
122
                                   struct sockaddr, socklen_t,
 
123
                                   shutdown(), SHUT_RD, send(),
 
124
                                   MSG_NOSIGNAL, bind(), recv(),
 
125
                                   socketpair() */
 
126
#include <glob.h>               /* globfree(), glob_t, glob(),
 
127
                                   GLOB_ERR, GLOB_NOSORT, GLOB_MARK,
 
128
                                   GLOB_ABORTED, GLOB_NOMATCH,
 
129
                                   GLOB_NOSPACE */
 
130
 
 
131
/* End of includes */
 
132
 
 
133
/* Start of declarations of private types and functions */
 
134
 
 
135
/* microseconds of CLOCK_MONOTONIC absolute time; 0 means unset */
 
136
typedef uintmax_t mono_microsecs;
 
137
 
 
138
/* "task_queue" - A queue of tasks to be run */
 
139
typedef struct {
 
140
  struct task_struct *tasks;    /* Tasks in this queue */
 
141
  size_t length;                /* Number of tasks */
 
142
  /* Memory allocated for "tasks", in bytes */
 
143
  size_t allocated;             
 
144
  /* Time when this queue should be run, at the latest */
 
145
  mono_microsecs next_run;
 
146
} __attribute__((designated_init)) task_queue;
 
147
 
 
148
/* "func_type" - A function type for task functions
 
149
 
 
150
   I.e. functions for the code which runs when a task is run, all have
 
151
   this type */
 
152
typedef void (task_func) (const struct task_struct,
 
153
                          task_queue *const)
 
154
  __attribute__((nonnull));
 
155
 
 
156
/* "buffer" - A data buffer for a growing array of bytes
 
157
 
 
158
   Used for the "password" variable */
 
159
typedef struct {
 
160
  char *data;
 
161
  size_t length;
 
162
  size_t allocated;
 
163
} __attribute__((designated_init)) buffer;
 
164
 
 
165
/* "string_set" - A set type which can contain strings
 
166
 
 
167
   Used by the "cancelled_filenames" variable */
 
168
typedef struct {
 
169
  char *argz;                   /* Do not access these except in */
 
170
  size_t argz_len;              /* the string_set_* functions */
 
171
} __attribute__((designated_init)) string_set;
 
172
 
 
173
/* "task_context" - local variables for tasks
 
174
 
 
175
   This data structure distinguishes between different tasks which are
 
176
   using the same function.  This data structure is passed to every
 
177
   task function when each task is run.
 
178
 
 
179
   Note that not every task uses every struct member. */
 
180
typedef struct task_struct {
 
181
  task_func *const func;         /* The function run by this task */
 
182
  char *const question_filename; /* The question file */
 
183
  const pid_t pid;               /* Mandos client process ID */
 
184
  const int epoll_fd;            /* The epoll set file descriptor */
 
185
  bool *const quit_now;          /* Set to true on fatal errors */
 
186
  const int fd;                  /* General purpose file descriptor */
 
187
  bool *const mandos_client_exited; /* Set true when client exits */
 
188
  buffer *const password;           /* As read from client process */
 
189
  bool *const password_is_read;     /* "password" is done growing */
 
190
  char *filename;                   /* General purpose file name */
 
191
  /* A set of strings of all the file names of questions which have
 
192
     been cancelled for any reason; tasks pertaining to these question
 
193
     files should not be run */
 
194
  string_set *const cancelled_filenames;
 
195
  const mono_microsecs notafter; /* "NotAfter" from question file */
 
196
  /* Updated before each queue run; is compared with queue.next_run */
 
197
  const mono_microsecs *const current_time;
 
198
} __attribute__((designated_init)) task_context;
 
199
 
 
200
/* Declare all our functions here so we can define them in any order
 
201
   below.  Note: test functions are *not* declared here, they are
 
202
   declared in the test section. */
 
203
__attribute__((warn_unused_result))
 
204
static bool should_only_run_tests(int *, char **[]);
 
205
__attribute__((warn_unused_result, cold))
 
206
static bool run_tests(int, char *[]);
 
207
static void handle_sigchld(__attribute__((unused)) int sig){}
 
208
__attribute__((warn_unused_result, malloc))
 
209
task_queue *create_queue(void);
 
210
__attribute__((nonnull, warn_unused_result))
 
211
bool add_to_queue(task_queue *const, const task_context);
 
212
__attribute__((nonnull))
 
213
void cleanup_task(const task_context *const);
 
214
__attribute__((nonnull))
 
215
void cleanup_queue(task_queue *const *const);
 
216
__attribute__((pure, nonnull, warn_unused_result))
 
217
bool queue_has_question(const task_queue *const);
 
218
__attribute__((nonnull))
 
219
void cleanup_close(const int *const);
 
220
__attribute__((nonnull))
 
221
void cleanup_string(char *const *const);
 
222
__attribute__((nonnull))
 
223
void cleanup_buffer(buffer *const);
 
224
__attribute__((pure, nonnull, warn_unused_result))
 
225
bool string_set_contains(const string_set, const char *const);
 
226
__attribute__((nonnull, warn_unused_result))
 
227
bool string_set_add(string_set *const, const char *const);
 
228
__attribute__((nonnull))
 
229
void string_set_clear(string_set *);
 
230
void string_set_swap(string_set *const, string_set *const);
 
231
__attribute__((nonnull, warn_unused_result))
 
232
bool start_mandos_client(task_queue *const, const int, bool *const,
 
233
                         bool *const, buffer *const, bool *const,
 
234
                         const struct sigaction *const,
 
235
                         const sigset_t, const char *const,
 
236
                         const uid_t, const gid_t,
 
237
                         const char *const *const);
 
238
__attribute__((nonnull))
 
239
task_func wait_for_mandos_client_exit;
 
240
__attribute__((nonnull))
 
241
task_func read_mandos_client_output;
 
242
__attribute__((warn_unused_result))
 
243
bool add_inotify_dir_watch(task_queue *const, const int, bool *const,
 
244
                           buffer *const, const char *const,
 
245
                           string_set *, const mono_microsecs *const,
 
246
                           bool *const, bool *const);
 
247
__attribute__((nonnull))
 
248
task_func read_inotify_event;
 
249
__attribute__((nonnull))
 
250
task_func open_and_parse_question;
 
251
__attribute__((nonnull))
 
252
task_func cancel_old_question;
 
253
__attribute__((nonnull))
 
254
task_func connect_question_socket;
 
255
__attribute__((nonnull))
 
256
task_func send_password_to_socket;
 
257
__attribute__((warn_unused_result))
 
258
bool add_existing_questions(task_queue *const, const int,
 
259
                            buffer *const, string_set *,
 
260
                            const mono_microsecs *const,
 
261
                            bool *const, bool *const,
 
262
                            const char *const);
 
263
__attribute__((nonnull, warn_unused_result))
 
264
bool wait_for_event(const int, const mono_microsecs,
 
265
                    const mono_microsecs);
 
266
bool run_queue(task_queue **const, string_set *const, bool *const);
 
267
bool clear_all_fds_from_epoll_set(const int);
 
268
mono_microsecs get_current_time(void);
 
269
__attribute__((nonnull, warn_unused_result))
 
270
bool setup_signal_handler(struct sigaction *const);
 
271
__attribute__((nonnull))
 
272
bool restore_signal_handler(const struct sigaction *const);
 
273
__attribute__((nonnull, warn_unused_result))
 
274
bool block_sigchld(sigset_t *const);
 
275
__attribute__((nonnull))
 
276
bool restore_sigmask(const sigset_t *const);
 
277
__attribute__((nonnull))
 
278
bool parse_arguments(int, char *[], const bool, char **, char **,
 
279
                     uid_t *const , gid_t *const, char **, size_t *);
 
280
 
 
281
/* End of declarations of private types and functions */
 
282
 
 
283
/* Start of "main" section; this section LACKS TESTS!
 
284
 
 
285
   Code here should be as simple as possible. */
 
286
 
 
287
/* These are required to be global by Argp */
 
288
const char *argp_program_version = "password-agent " VERSION;
 
289
const char *argp_program_bug_address = "<mandos@recompile.se>";
 
290
 
 
291
int main(int argc, char *argv[]){
 
292
 
 
293
  /* If the --test option is passed, skip all normal operations and
 
294
     instead only run the run_tests() function, which also does all
 
295
     its own option parsing, so we don't have to do anything here. */
 
296
  if(should_only_run_tests(&argc, &argv)){
 
297
    if(run_tests(argc, argv)){
 
298
      return EXIT_SUCCESS;      /* All tests successful */
 
299
    }
 
300
    return EXIT_FAILURE;        /* Some test(s) failed */
 
301
  }
 
302
 
 
303
  __attribute__((cleanup(cleanup_string)))
 
304
    char *agent_directory = NULL;
 
305
 
 
306
  __attribute__((cleanup(cleanup_string)))
 
307
    char *helper_directory = NULL;
 
308
 
 
309
  uid_t user = 0;
 
310
  gid_t group = 0;
 
311
 
 
312
  __attribute__((cleanup(cleanup_string)))
 
313
    char *mandos_argz = NULL;
 
314
  size_t mandos_argz_length = 0;
 
315
 
 
316
  if(not parse_arguments(argc, argv, true, &agent_directory,
 
317
                         &helper_directory, &user, &group,
 
318
                         &mandos_argz, &mandos_argz_length)){
 
319
    /* This should never happen, since "true" is passed as the third
 
320
       argument to parse_arguments() above, which should make
 
321
       argp_parse() call exit() if any parsing error occurs. */
 
322
    error(EX_USAGE, errno, "Failed to parse arguments");
 
323
  }
 
324
 
 
325
  const char default_agent_directory[] = "/run/systemd/ask-password";
 
326
  const char default_helper_directory[]
 
327
    = "/lib/mandos/plugin-helpers";
 
328
  const char *const default_argv[]
 
329
    = {"/lib/mandos/plugins.d/mandos-client", NULL };
 
330
 
 
331
  /* Set variables to default values if unset */
 
332
  if(agent_directory == NULL){
 
333
    agent_directory = strdup(default_agent_directory);
 
334
    if(agent_directory == NULL){
 
335
      error(EX_OSERR, errno, "Failed strdup()");
 
336
    }
 
337
  }
 
338
  if(helper_directory == NULL){
 
339
    helper_directory = strdup(default_helper_directory);
 
340
    if(helper_directory == NULL){
 
341
      error(EX_OSERR, errno, "Failed strdup()");
 
342
    }
 
343
  }
 
344
  if(user == 0){
 
345
    user = 65534;               /* nobody */
 
346
  }
 
347
  if(group == 0){
 
348
    group = 65534;              /* nogroup */
 
349
  }
 
350
  /* If parse_opt did not create an argz vector, create one with
 
351
     default values */
 
352
  if(mandos_argz == NULL){
 
353
#ifdef __GNUC__
 
354
#pragma GCC diagnostic push
 
355
    /* argz_create() takes a non-const argv for some unknown reason -
 
356
       argz_create() isn't modifying the strings, just copying them.
 
357
       Therefore, this cast to non-const should be safe. */
 
358
#pragma GCC diagnostic ignored "-Wcast-qual"
 
359
#endif
 
360
    errno = argz_create((char *const *)default_argv, &mandos_argz,
 
361
                        &mandos_argz_length);
 
362
#ifdef __GNUC__
 
363
#pragma GCC diagnostic pop
 
364
#endif
 
365
    if(errno != 0){
 
366
      error(EX_OSERR, errno, "Failed argz_create()");
 
367
    }
 
368
  }
 
369
  /* Use argz vector to create a normal argv, usable by execv() */
 
370
 
 
371
  char **mandos_argv = malloc((argz_count(mandos_argz,
 
372
                                          mandos_argz_length)
 
373
                               + 1) * sizeof(char *));
 
374
  if(mandos_argv == NULL){
 
375
    error_t saved_errno = errno;
 
376
    free(mandos_argz);
 
377
    error(EX_OSERR, saved_errno, "Failed malloc()");
 
378
  }
 
379
  argz_extract(mandos_argz, mandos_argz_length, mandos_argv);
 
380
 
 
381
  sigset_t orig_sigmask;
 
382
  if(not block_sigchld(&orig_sigmask)){
 
383
    return EX_OSERR;
 
384
  }
 
385
 
 
386
  struct sigaction old_sigchld_action;
 
387
  if(not setup_signal_handler(&old_sigchld_action)){
 
388
    return EX_OSERR;
 
389
  }
 
390
 
 
391
  mono_microsecs current_time = 0;
 
392
 
 
393
  bool mandos_client_exited = false;
 
394
  bool quit_now = false;
 
395
  __attribute__((cleanup(cleanup_close)))
 
396
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
397
  if(epoll_fd < 0){
 
398
    error(EX_OSERR, errno, "Failed to create epoll set fd");
 
399
  }
 
400
  __attribute__((cleanup(cleanup_queue)))
 
401
    task_queue *queue = create_queue();
 
402
  if(queue == NULL){
 
403
    error(EX_OSERR, errno, "Failed to create task queue");
 
404
  }
 
405
 
 
406
  __attribute__((cleanup(cleanup_buffer)))
 
407
    buffer password = {};
 
408
  bool password_is_read = false;
 
409
 
 
410
  __attribute__((cleanup(string_set_clear)))
 
411
    string_set cancelled_filenames = {};
 
412
 
 
413
  /* Add tasks to queue */
 
414
  if(not start_mandos_client(queue, epoll_fd, &mandos_client_exited,
 
415
                             &quit_now, &password, &password_is_read,
 
416
                             &old_sigchld_action, orig_sigmask,
 
417
                             helper_directory, user, group,
 
418
                             (const char *const *)mandos_argv)){
 
419
    return EX_OSERR;            /* Error has already been printed */
 
420
  }
 
421
  /* These variables were only for start_mandos_client() and are not
 
422
     needed anymore */
 
423
  free(mandos_argv);
 
424
  free(mandos_argz);
 
425
  mandos_argz = NULL;
 
426
  if(not add_inotify_dir_watch(queue, epoll_fd, &quit_now, &password,
 
427
                               agent_directory, &cancelled_filenames,
 
428
                               &current_time, &mandos_client_exited,
 
429
                               &password_is_read)){
 
430
    switch(errno){              /* Error has already been printed */
 
431
    case EACCES:
 
432
    case ENAMETOOLONG:
 
433
    case ENOENT:
 
434
      return EX_OSFILE;
 
435
    default:
 
436
      return EX_OSERR;
 
437
    }
 
438
  }
 
439
  if(not add_existing_questions(queue, epoll_fd, &password,
 
440
                                &cancelled_filenames, &current_time,
 
441
                                &mandos_client_exited,
 
442
                                &password_is_read, agent_directory)){
 
443
    return EXIT_FAILURE;        /* Error has already been printed */
 
444
  }
 
445
 
 
446
  /* Run queue */
 
447
  do {
 
448
    current_time = get_current_time();
 
449
    if(not wait_for_event(epoll_fd, queue->next_run, current_time)){
 
450
      const error_t saved_errno = errno;
 
451
      error(EXIT_FAILURE, saved_errno, "Failure while waiting for"
 
452
            " events");
 
453
    }
 
454
 
 
455
    current_time = get_current_time();
 
456
    if(not run_queue(&queue, &cancelled_filenames, &quit_now)){
 
457
      const error_t saved_errno = errno;
 
458
      error(EXIT_FAILURE, saved_errno, "Failure while running queue");
 
459
    }
 
460
 
 
461
    /*  When no tasks about questions are left in the queue, break out
 
462
        of the loop (and implicitly exit the program) */
 
463
  } while(queue_has_question(queue));
 
464
 
 
465
  restore_signal_handler(&old_sigchld_action);
 
466
  restore_sigmask(&orig_sigmask);
 
467
 
 
468
  return EXIT_SUCCESS;
 
469
}
 
470
 
 
471
__attribute__((warn_unused_result))
 
472
mono_microsecs get_current_time(void){
 
473
  struct timespec currtime;
 
474
  if(clock_gettime(CLOCK_MONOTONIC, &currtime) != 0){
 
475
    error(0, errno, "Failed to get current time");
 
476
    return 0;
 
477
  }
 
478
  return ((mono_microsecs)currtime.tv_sec * 1000000) /* seconds */
 
479
    + ((mono_microsecs)currtime.tv_nsec / 1000);     /* nanoseconds */
 
480
}
 
481
 
 
482
/* End of "main" section */
 
483
 
 
484
/* Start of regular code section; ALL this code has tests */
 
485
 
 
486
__attribute__((nonnull))
 
487
bool parse_arguments(int argc, char *argv[], const bool exit_failure,
 
488
                     char **agent_directory, char **helper_directory,
 
489
                     uid_t *const user, gid_t *const group,
 
490
                     char **mandos_argz, size_t *mandos_argz_length){
 
491
 
 
492
  const struct argp_option options[] = {
 
493
    { .name="agent-directory",.key='d', .arg="DIRECTORY",
 
494
      .doc="Systemd password agent directory" },
 
495
    { .name="helper-directory",.key=128, .arg="DIRECTORY",
 
496
      .doc="Mandos Client password helper directory" },
 
497
    { .name="plugin-helper-dir", .key=129, /* From plugin-runner */
 
498
      .flags=OPTION_HIDDEN | OPTION_ALIAS },
 
499
    { .name="user", .key='u', .arg="USERID",
 
500
      .doc="User ID the Mandos Client will use as its unprivileged"
 
501
      " user" },
 
502
    { .name="userid", .key=130, /* From plugin--runner */
 
503
      .flags=OPTION_HIDDEN | OPTION_ALIAS },
 
504
    { .name="group", .key='g', .arg="GROUPID",
 
505
      .doc="Group ID the Mandos Client will use as its unprivileged"
 
506
      " group" },
 
507
    { .name="groupid", .key=131, /* From plugin--runner */
 
508
      .flags=OPTION_HIDDEN | OPTION_ALIAS },
 
509
    { .name="test", .key=255, /* See should_only_run_tests() */
 
510
      .doc="Skip normal operation, and only run self-tests.  See"
 
511
      " --test --help.", .group=10, },
 
512
    { NULL },
 
513
  };
 
514
 
 
515
  __attribute__((nonnull(3)))
 
516
    error_t parse_opt(int key, char *arg, struct argp_state *state){
 
517
    errno = 0;
 
518
    switch(key){
 
519
    case 'd':                   /* --agent-directory */
 
520
      *agent_directory = strdup(arg);
 
521
      break;
 
522
    case 128:                   /* --helper-directory */
 
523
    case 129:                   /* --plugin-helper-dir */
 
524
      *helper_directory = strdup(arg);
 
525
      break;
 
526
    case 'u':                   /* --user */
 
527
    case 130:                   /* --userid */
 
528
      {
 
529
        char *tmp;
 
530
        uintmax_t tmp_id = 0;
 
531
        errno = 0;
 
532
        tmp_id = (uid_t)strtoumax(arg, &tmp, 10);
 
533
        if(errno != 0 or tmp == arg or *tmp != '\0'
 
534
           or tmp_id != (uid_t)tmp_id or (uid_t)tmp_id == 0){
 
535
          return ARGP_ERR_UNKNOWN;
 
536
        }
 
537
        *user = (uid_t)tmp_id;
 
538
        errno = 0;
 
539
        break;
 
540
      }
 
541
    case 'g':                   /* --group */
 
542
    case 131:                   /* --groupid */
 
543
      {
 
544
        char *tmp;
 
545
        uintmax_t tmp_id = 0;
 
546
        errno = 0;
 
547
        tmp_id = (uid_t)strtoumax(arg, &tmp, 10);
 
548
        if(errno != 0 or tmp == arg or *tmp != '\0'
 
549
           or tmp_id != (gid_t)tmp_id or (gid_t)tmp_id == 0){
 
550
          return ARGP_ERR_UNKNOWN;
 
551
        }
 
552
        *group = (gid_t)tmp_id;
 
553
        errno = 0;
 
554
        break;
 
555
      }
 
556
    case ARGP_KEY_ARGS:
 
557
      /* Copy arguments into argz vector */
 
558
      return argz_create(state->argv + state->next, mandos_argz,
 
559
                         mandos_argz_length);
 
560
    default:
 
561
      return ARGP_ERR_UNKNOWN;
 
562
    }
 
563
    return errno;
 
564
  }
 
565
 
 
566
  const struct argp argp = {
 
567
    .options=options,
 
568
    .parser=parse_opt,
 
569
    .args_doc="[MANDOS_CLIENT [OPTION...]]\n--test",
 
570
    .doc = "Mandos password agent -- runs Mandos client as a"
 
571
    " systemd password agent",
 
572
  };
 
573
 
 
574
  errno = argp_parse(&argp, argc, argv,
 
575
                     exit_failure ? 0 : ARGP_NO_EXIT, NULL, NULL);
 
576
 
 
577
  return errno == 0;
 
578
}
 
579
 
 
580
__attribute__((nonnull, warn_unused_result))
 
581
bool block_sigchld(sigset_t *const orig_sigmask){
 
582
  sigset_t sigchld_sigmask;
 
583
  if(sigemptyset(&sigchld_sigmask) < 0){
 
584
    error(0, errno, "Failed to empty signal set");
 
585
    return false;
 
586
  }
 
587
  if(sigaddset(&sigchld_sigmask, SIGCHLD) < 0){
 
588
    error(0, errno, "Failed to add SIGCHLD to signal set");
 
589
    return false;
 
590
  }
 
591
  if(pthread_sigmask(SIG_BLOCK, &sigchld_sigmask, orig_sigmask) != 0){
 
592
    error(0, errno, "Failed to block SIGCHLD signal");
 
593
    return false;
 
594
  }
 
595
  return true;
 
596
}
 
597
 
 
598
__attribute__((nonnull, warn_unused_result, const))
 
599
bool restore_sigmask(const sigset_t *const orig_sigmask){
 
600
  if(pthread_sigmask(SIG_SETMASK, orig_sigmask, NULL) != 0){
 
601
    error(0, errno, "Failed to restore blocked signals");
 
602
    return false;
 
603
  }
 
604
  return true;
 
605
}
 
606
 
 
607
__attribute__((nonnull, warn_unused_result))
 
608
bool setup_signal_handler(struct sigaction *const old_sigchld_action){
 
609
  struct sigaction sigchld_action = {
 
610
    .sa_handler=handle_sigchld,
 
611
    .sa_flags=SA_RESTART | SA_NOCLDSTOP,
 
612
  };
 
613
  /* Set all signals in "sa_mask" struct member; this makes all
 
614
     signals automatically blocked during signal handler */
 
615
  if(sigfillset(&sigchld_action.sa_mask) != 0){
 
616
    error(0, errno, "Failed to do sigfillset()");
 
617
    return false;
 
618
  }
 
619
  if(sigaction(SIGCHLD, &sigchld_action, old_sigchld_action) != 0){
 
620
    error(0, errno, "Failed to set SIGCHLD signal handler");
 
621
    return false;
 
622
  }
 
623
  return true;
 
624
}
 
625
 
 
626
__attribute__((nonnull, warn_unused_result))
 
627
bool restore_signal_handler(const struct sigaction *const
 
628
                            old_sigchld_action){
 
629
  if(sigaction(SIGCHLD, old_sigchld_action, NULL) != 0){
 
630
    error(0, errno, "Failed to restore signal handler");
 
631
    return false;
 
632
  }
 
633
  return true;
 
634
}
 
635
 
 
636
__attribute__((warn_unused_result, malloc))
 
637
task_queue *create_queue(void){
 
638
  task_queue *queue = malloc(sizeof(task_queue));
 
639
  if(queue){
 
640
    queue->tasks = NULL;
 
641
    queue->length = 0;
 
642
    queue->allocated = 0;
 
643
    queue->next_run = 0;
 
644
  }
 
645
  return queue;
 
646
}
 
647
 
 
648
__attribute__((nonnull, warn_unused_result))
 
649
bool add_to_queue(task_queue *const queue, const task_context task){
 
650
  const size_t needed_size = sizeof(task_context)*(queue->length + 1);
 
651
  if(needed_size > (queue->allocated)){
 
652
    task_context *const new_tasks = realloc(queue->tasks,
 
653
                                            needed_size);
 
654
    if(new_tasks == NULL){
 
655
      error(0, errno, "Failed to allocate %" PRIuMAX
 
656
            " bytes for queue->tasks", (uintmax_t)needed_size);
 
657
      return false;
 
658
    }
 
659
    queue->tasks = new_tasks;
 
660
    queue->allocated = needed_size;
 
661
  }
 
662
  /* Using memcpy here is necessary because doing */
 
663
  /* queue->tasks[queue->length++] = task; */
 
664
  /* would violate const-ness of task members */
 
665
  memcpy(&(queue->tasks[queue->length++]), &task,
 
666
         sizeof(task_context));
 
667
  return true;
 
668
}
 
669
 
 
670
__attribute__((nonnull))
 
671
void cleanup_task(const task_context *const task){
 
672
  const error_t saved_errno = errno;
 
673
  /* free and close all task data */
 
674
  free(task->question_filename);
 
675
  if(task->filename != task->question_filename){
 
676
    free(task->filename);
 
677
  }
 
678
  if(task->pid > 0){
 
679
    kill(task->pid, SIGTERM);
 
680
  }
 
681
  if(task->fd > 0){
 
682
    close(task->fd);
 
683
  }
 
684
  errno = saved_errno;
 
685
}
 
686
 
 
687
__attribute__((nonnull))
 
688
void free_queue(task_queue *const queue){
 
689
  free(queue->tasks);
 
690
  free(queue);
 
691
}
 
692
 
 
693
__attribute__((nonnull))
 
694
void cleanup_queue(task_queue *const *const queue){
 
695
  if(*queue == NULL){
 
696
    return;
 
697
  }
 
698
  for(size_t i = 0; i < (*queue)->length; i++){
 
699
    const task_context *const task = ((*queue)->tasks)+i;
 
700
    cleanup_task(task);
 
701
  }
 
702
  free_queue(*queue);
 
703
}
 
704
 
 
705
__attribute__((pure, nonnull, warn_unused_result))
 
706
bool queue_has_question(const task_queue *const queue){
 
707
  for(size_t i=0; i < queue->length; i++){
 
708
    if(queue->tasks[i].question_filename != NULL){
 
709
      return true;
 
710
    }
 
711
  }
 
712
  return false;
 
713
}
 
714
 
 
715
__attribute__((nonnull))
 
716
void cleanup_close(const int *const fd){
 
717
  const error_t saved_errno = errno;
 
718
  close(*fd);
 
719
  errno = saved_errno;
 
720
}
 
721
 
 
722
__attribute__((nonnull))
 
723
void cleanup_string(char *const *const ptr){
 
724
  free(*ptr);
 
725
}
 
726
 
 
727
__attribute__((nonnull))
 
728
void cleanup_buffer(buffer *buf){
 
729
  if(buf->allocated > 0){
 
730
#if defined(__GLIBC_PREREQ) and __GLIBC_PREREQ(2, 25)
 
731
    explicit_bzero(buf->data, buf->allocated);
 
732
#else
 
733
    memset(buf->data, '\0', buf->allocated);
 
734
#endif
 
735
  }
 
736
  if(buf->data != NULL){
 
737
    if(munlock(buf->data, buf->allocated) != 0){
 
738
      error(0, errno, "Failed to unlock memory of old buffer");
 
739
    }
 
740
    free(buf->data);
 
741
    buf->data = NULL;
 
742
  }
 
743
  buf->length = 0;
 
744
  buf->allocated = 0;
 
745
}
 
746
 
 
747
__attribute__((pure, nonnull, warn_unused_result))
 
748
bool string_set_contains(const string_set set, const char *const str){
 
749
  for(const char *s = set.argz; s != NULL and set.argz_len > 0;
 
750
      s = argz_next(set.argz, set.argz_len, s)){
 
751
    if(strcmp(s, str) == 0){
 
752
      return true;
 
753
    }
 
754
  }
 
755
  return false;
 
756
}
 
757
 
 
758
__attribute__((nonnull, warn_unused_result))
 
759
bool string_set_add(string_set *const set, const char *const str){
 
760
  if(string_set_contains(*set, str)){
 
761
    return true;
 
762
  }
 
763
  error_t error = argz_add(&set->argz, &set->argz_len, str);
 
764
  if(error == 0){
 
765
    return true;
 
766
  }
 
767
  errno = error;
 
768
  return false;
 
769
}
 
770
 
 
771
__attribute__((nonnull))
 
772
void string_set_clear(string_set *set){
 
773
  free(set->argz);
 
774
  set->argz = NULL;
 
775
  set->argz_len = 0;
 
776
}
 
777
 
 
778
__attribute__((nonnull))
 
779
void string_set_swap(string_set *const set1, string_set *const set2){
 
780
  /* Swap contents of two string sets */
 
781
  {
 
782
    char *const tmp_argz = set1->argz;
 
783
    set1->argz = set2->argz;
 
784
    set2->argz = tmp_argz;
 
785
  }
 
786
  {
 
787
    const size_t tmp_argz_len = set1->argz_len;
 
788
    set1->argz_len = set2->argz_len;
 
789
    set2->argz_len = tmp_argz_len;
 
790
  }
 
791
}
 
792
 
 
793
__attribute__((nonnull, warn_unused_result))
 
794
bool start_mandos_client(task_queue *const queue,
 
795
                         const int epoll_fd,
 
796
                         bool *const mandos_client_exited,
 
797
                         bool *const quit_now, buffer *const password,
 
798
                         bool *const password_is_read,
 
799
                         const struct sigaction *const
 
800
                         old_sigchld_action, const sigset_t sigmask,
 
801
                         const char *const helper_directory,
 
802
                         const uid_t user, const gid_t group,
 
803
                         const char *const *const argv){
 
804
  int pipefds[2];
 
805
  if(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK) != 0){
 
806
    error(0, errno, "Failed to pipe2(..., O_CLOEXEC | O_NONBLOCK)");
 
807
    return false;
 
808
  }
 
809
 
 
810
  const pid_t pid = fork();
 
811
  if(pid == 0){
 
812
    if(not restore_signal_handler(old_sigchld_action)){
 
813
      _exit(EXIT_FAILURE);
 
814
    }
 
815
    if(not restore_sigmask(&sigmask)){
 
816
      _exit(EXIT_FAILURE);
 
817
    }
 
818
    if(close(pipefds[0]) != 0){
 
819
      error(0, errno, "Failed to close() parent pipe fd");
 
820
      _exit(EXIT_FAILURE);
 
821
    }
 
822
    if(dup2(pipefds[1], STDOUT_FILENO) == -1){
 
823
      error(0, errno, "Failed to dup2() pipe fd to stdout");
 
824
      _exit(EXIT_FAILURE);
 
825
    }
 
826
    if(close(pipefds[1]) != 0){
 
827
      error(0, errno, "Failed to close() old child pipe fd");
 
828
      _exit(EXIT_FAILURE);
 
829
    }
 
830
    if(setenv("MANDOSPLUGINHELPERDIR", helper_directory, 1) != 0){
 
831
      error(0, errno, "Failed to setenv(\"MANDOSPLUGINHELPERDIR\","
 
832
            " \"%s\", 1)", helper_directory);
 
833
      _exit(EXIT_FAILURE);
 
834
    }
 
835
    if(group != 0 and setresgid(group, 0, 0) == -1){
 
836
      error(0, errno, "Failed to setresgid(-1, %" PRIuMAX ", %"
 
837
            PRIuMAX")", (uintmax_t)group, (uintmax_t)group);
 
838
      _exit(EXIT_FAILURE);
 
839
    }
 
840
    if(user != 0 and setresuid(user, 0, 0) == -1){
 
841
      error(0, errno, "Failed to setresuid(-1, %" PRIuMAX ", %"
 
842
            PRIuMAX")", (uintmax_t)user, (uintmax_t)user);
 
843
      _exit(EXIT_FAILURE);
 
844
    }
 
845
#ifdef __GNUC__
 
846
#pragma GCC diagnostic push
 
847
    /* For historical reasons, the "argv" argument to execv() is not
 
848
       const, but it is safe to override this. */
 
849
#pragma GCC diagnostic ignored "-Wcast-qual"
 
850
#endif
 
851
    execv(argv[0], (char **)argv);
 
852
#ifdef __GNUC__
 
853
#pragma GCC diagnostic pop
 
854
#endif
 
855
    error(0, errno, "execv(\"%s\", ...) failed", argv[0]);
 
856
    _exit(EXIT_FAILURE);
 
857
  }
 
858
  close(pipefds[1]);
 
859
 
 
860
  if(not add_to_queue(queue, (task_context){
 
861
        .func=wait_for_mandos_client_exit,
 
862
        .pid=pid,
 
863
        .mandos_client_exited=mandos_client_exited,
 
864
        .quit_now=quit_now,
 
865
      })){
 
866
    error(0, errno, "Failed to add wait_for_mandos_client to queue");
 
867
    close(pipefds[0]);
 
868
    return false;
 
869
  }
 
870
 
 
871
  const int ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, pipefds[0],
 
872
                            &(struct epoll_event)
 
873
                            { .events=EPOLLIN | EPOLLRDHUP });
 
874
  if(ret != 0 and errno != EEXIST){
 
875
    error(0, errno, "Failed to add file descriptor to epoll set");
 
876
    close(pipefds[0]);
 
877
    return false;
 
878
  }
 
879
 
 
880
  return add_to_queue(queue, (task_context){
 
881
      .func=read_mandos_client_output,
 
882
      .epoll_fd=epoll_fd,
 
883
      .fd=pipefds[0],
 
884
      .quit_now=quit_now,
 
885
      .password=password,
 
886
      .password_is_read=password_is_read,
 
887
    });
 
888
}
 
889
 
 
890
__attribute__((nonnull))
 
891
void wait_for_mandos_client_exit(const task_context task,
 
892
                                 task_queue *const queue){
 
893
  const pid_t pid = task.pid;
 
894
  bool *const mandos_client_exited = task.mandos_client_exited;
 
895
  bool *const quit_now = task.quit_now;
 
896
 
 
897
  int status;
 
898
  switch(waitpid(pid, &status, WNOHANG)){
 
899
  case 0:                       /* Not exited yet */
 
900
    if(not add_to_queue(queue, task)){
 
901
      error(0, errno, "Failed to add myself to queue");
 
902
      *quit_now = true;
 
903
    }
 
904
    break;
 
905
  case -1:                      /* Error */
 
906
    error(0, errno, "waitpid(%" PRIdMAX ") failed", (intmax_t)pid);
 
907
    if(errno != ECHILD){
 
908
      kill(pid, SIGTERM);
 
909
    }
 
910
    *quit_now = true;
 
911
    break;
 
912
  default:                      /* Has exited */
 
913
    *mandos_client_exited = true;
 
914
    if((not WIFEXITED(status))
 
915
       or (WEXITSTATUS(status) != EXIT_SUCCESS)){
 
916
      error(0, 0, "Mandos client failed or was killed");
 
917
      *quit_now = true;
 
918
    }
 
919
  }
 
920
}
 
921
 
 
922
__attribute__((nonnull))
 
923
void read_mandos_client_output(const task_context task,
 
924
                               task_queue *const queue){
 
925
  buffer *const password = task.password;
 
926
  bool *const quit_now = task.quit_now;
 
927
  bool *const password_is_read = task.password_is_read;
 
928
  const int fd = task.fd;
 
929
  const int epoll_fd = task.epoll_fd;
 
930
 
 
931
  const size_t new_potential_size = (password->length + PIPE_BUF);
 
932
  if(password->allocated < new_potential_size){
 
933
    char *const new_buffer = calloc(new_potential_size, 1);
 
934
    if(new_buffer == NULL){
 
935
      error(0, errno, "Failed to allocate %" PRIuMAX
 
936
            " bytes for password", (uintmax_t)new_potential_size);
 
937
      *quit_now = true;
 
938
      close(fd);
 
939
      return;
 
940
    }
 
941
    if(mlock(new_buffer, new_potential_size) != 0){
 
942
      /* Warn but do not treat as fatal error */
 
943
      if(errno != EPERM and errno != ENOMEM){
 
944
        error(0, errno, "Failed to lock memory for password");
 
945
      }
 
946
    }
 
947
    if(password->length > 0){
 
948
      memcpy(new_buffer, password->data, password->length);
 
949
#if defined(__GLIBC_PREREQ) and __GLIBC_PREREQ(2, 25)
 
950
      explicit_bzero(password->data, password->allocated);
 
951
#else
 
952
      memset(password->data, '\0', password->allocated);
 
953
#endif
 
954
    }
 
955
    if(password->data != NULL){
 
956
      if(munlock(password->data, password->allocated) != 0){
 
957
        error(0, errno, "Failed to unlock memory of old buffer");
 
958
      }
 
959
      free(password->data);
 
960
    }
 
961
    password->data = new_buffer;
 
962
    password->allocated = new_potential_size;
 
963
  }
 
964
 
 
965
  const ssize_t read_length = read(fd, password->data
 
966
                                   + password->length, PIPE_BUF);
 
967
 
 
968
  if(read_length == 0){ /* EOF */
 
969
    *password_is_read = true;
 
970
    close(fd);
 
971
    return;
 
972
  }
 
973
  if(read_length < 0 and errno != EAGAIN){ /* Actual error */
 
974
    error(0, errno, "Failed to read password from Mandos client");
 
975
    *quit_now = true;
 
976
    close(fd);
 
977
    return;
 
978
  }
 
979
  if(read_length > 0){          /* Data has been read */
 
980
    password->length += (size_t)read_length;
 
981
  }
 
982
 
 
983
  /* Either data was read, or EAGAIN was indicated, meaning no data
 
984
     available yet */
 
985
 
 
986
  /* Re-add the fd to the epoll set */
 
987
  const int ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd,
 
988
                            &(struct epoll_event)
 
989
                            { .events=EPOLLIN | EPOLLRDHUP });
 
990
  if(ret != 0 and errno != EEXIST){
 
991
    error(0, errno, "Failed to re-add file descriptor to epoll set");
 
992
    *quit_now = true;
 
993
    close(fd);
 
994
    return;
 
995
  }
 
996
 
 
997
  /* Re-add myself to the queue */
 
998
  if(not add_to_queue(queue, task)){
 
999
    error(0, errno, "Failed to add myself to queue");
 
1000
    *quit_now = true;
 
1001
    close(fd);
 
1002
  }
 
1003
}
 
1004
 
 
1005
__attribute__((nonnull, warn_unused_result))
 
1006
bool add_inotify_dir_watch(task_queue *const queue,
 
1007
                           const int epoll_fd, bool *const quit_now,
 
1008
                           buffer *const password,
 
1009
                           const char *const dir,
 
1010
                           string_set *cancelled_filenames,
 
1011
                           const mono_microsecs *const current_time,
 
1012
                           bool *const mandos_client_exited,
 
1013
                           bool *const password_is_read){
 
1014
  const int fd = inotify_init1(IN_NONBLOCK | IN_CLOEXEC);
 
1015
  if(fd == -1){
 
1016
    error(0, errno, "Failed to create inotify instance");
 
1017
    return false;
 
1018
  }
 
1019
 
 
1020
  if(inotify_add_watch(fd, dir, IN_CLOSE_WRITE
 
1021
                       | IN_MOVED_TO | IN_DELETE)
 
1022
     == -1){
 
1023
    error(0, errno, "Failed to create inotify watch on %s", dir);
 
1024
    return false;
 
1025
  }
 
1026
 
 
1027
  /* Add the inotify fd to the epoll set */
 
1028
  const int ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd,
 
1029
                            &(struct epoll_event)
 
1030
                            { .events=EPOLLIN | EPOLLRDHUP });
 
1031
  if(ret != 0 and errno != EEXIST){
 
1032
    error(0, errno, "Failed to add file descriptor to epoll set");
 
1033
    close(fd);
 
1034
    return false;
 
1035
  }
 
1036
 
 
1037
  const task_context read_inotify_event_task = {
 
1038
    .func=read_inotify_event,
 
1039
    .epoll_fd=epoll_fd,
 
1040
    .quit_now=quit_now,
 
1041
    .password=password,
 
1042
    .fd=fd,
 
1043
    .filename=strdup(dir),
 
1044
    .cancelled_filenames=cancelled_filenames,
 
1045
    .current_time=current_time,
 
1046
    .mandos_client_exited=mandos_client_exited,
 
1047
    .password_is_read=password_is_read,
 
1048
  };
 
1049
  if(read_inotify_event_task.filename == NULL){
 
1050
    error(0, errno, "Failed to strdup(\"%s\")", dir);
 
1051
    close(fd);
 
1052
    return false;
 
1053
  }
 
1054
 
 
1055
  return add_to_queue(queue, read_inotify_event_task);
 
1056
}
 
1057
 
 
1058
__attribute__((nonnull))
 
1059
void read_inotify_event(const task_context task,
 
1060
                        task_queue *const queue){
 
1061
  const int fd = task.fd;
 
1062
  const int epoll_fd = task.epoll_fd;
 
1063
  char *const filename = task.filename;
 
1064
  bool *quit_now = task.quit_now;
 
1065
  buffer *const password = task.password;
 
1066
  string_set *const cancelled_filenames = task.cancelled_filenames;
 
1067
  const mono_microsecs *const current_time = task.current_time;
 
1068
  bool *const mandos_client_exited = task.mandos_client_exited;
 
1069
  bool *const password_is_read = task.password_is_read;
 
1070
 
 
1071
  /* "sufficient to read at least one event." - inotify(7) */
 
1072
  const size_t ievent_size = (sizeof(struct inotify_event)
 
1073
                              + NAME_MAX + 1);
 
1074
  struct {
 
1075
    struct inotify_event event;
 
1076
    char name_buffer[NAME_MAX + 1];
 
1077
  } ievent_buffer;
 
1078
  struct inotify_event *const ievent = &ievent_buffer.event;
 
1079
 
 
1080
  const ssize_t read_length = read(fd, ievent, ievent_size);
 
1081
  if(read_length == 0){ /* EOF */
 
1082
    error(0, 0, "Got EOF from inotify fd for directory %s", filename);
 
1083
    *quit_now = true;
 
1084
    cleanup_task(&task);
 
1085
    return;
 
1086
  }
 
1087
  if(read_length < 0 and errno != EAGAIN){ /* Actual error */
 
1088
    error(0, errno, "Failed to read from inotify fd for directory %s",
 
1089
          filename);
 
1090
    *quit_now = true;
 
1091
    cleanup_task(&task);
 
1092
    return;
 
1093
  }
 
1094
  if(read_length > 0            /* Data has been read */
 
1095
     and fnmatch("ask.*", ievent->name, FNM_FILE_NAME) == 0){
 
1096
    char *question_filename = NULL;
 
1097
    const ssize_t question_filename_length
 
1098
      = asprintf(&question_filename, "%s/%s", filename, ievent->name);
 
1099
    if(question_filename_length < 0){
 
1100
      error(0, errno, "Failed to create file name from directory name"
 
1101
            " %s and file name %s", filename, ievent->name);
 
1102
    } else {
 
1103
      if(ievent->mask & (IN_CLOSE_WRITE | IN_MOVED_TO)){
 
1104
        if(not add_to_queue(queue, (task_context){
 
1105
              .func=open_and_parse_question,
 
1106
              .epoll_fd=epoll_fd,
 
1107
              .question_filename=question_filename,
 
1108
              .filename=question_filename,
 
1109
              .password=password,
 
1110
              .cancelled_filenames=cancelled_filenames,
 
1111
              .current_time=current_time,
 
1112
              .mandos_client_exited=mandos_client_exited,
 
1113
              .password_is_read=password_is_read,
 
1114
            })){
 
1115
          error(0, errno, "Failed to add open_and_parse_question task"
 
1116
                " for file name %s to queue", filename);
 
1117
        } else {
 
1118
          /* Force the added task (open_and_parse_question) to run
 
1119
             immediately */
 
1120
          queue->next_run = 1;
 
1121
        }
 
1122
      } else if(ievent->mask & IN_DELETE){
 
1123
        if(not string_set_add(cancelled_filenames,
 
1124
                              question_filename)){
 
1125
          error(0, errno, "Could not add question %s to"
 
1126
                " cancelled_questions", question_filename);
 
1127
          *quit_now = true;
 
1128
          free(question_filename);
 
1129
          cleanup_task(&task);
 
1130
          return;
 
1131
        }
 
1132
        free(question_filename);
 
1133
      }
 
1134
    }
 
1135
  }
 
1136
 
 
1137
  /* Either data was read, or EAGAIN was indicated, meaning no data
 
1138
     available yet */
 
1139
 
 
1140
  /* Re-add myself to the queue */
 
1141
  if(not add_to_queue(queue, task)){
 
1142
    error(0, errno, "Failed to re-add read_inotify_event(%s) to"
 
1143
          " queue", filename);
 
1144
    *quit_now = true;
 
1145
    cleanup_task(&task);
 
1146
    return;
 
1147
  }
 
1148
 
 
1149
  /* Re-add the fd to the epoll set */
 
1150
  const int ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd,
 
1151
                            &(struct epoll_event)
 
1152
                            { .events=EPOLLIN | EPOLLRDHUP });
 
1153
  if(ret != 0 and errno != EEXIST){
 
1154
    error(0, errno, "Failed to re-add inotify file descriptor %d for"
 
1155
          " directory %s to epoll set", fd, filename);
 
1156
    /* Force the added task (read_inotify_event) to run again, at most
 
1157
       one second from now */
 
1158
    if((queue->next_run == 0)
 
1159
       or (queue->next_run > (*current_time + 1000000))){
 
1160
      queue->next_run = *current_time + 1000000;
 
1161
    }
 
1162
  }
 
1163
}
 
1164
 
 
1165
__attribute__((nonnull))
 
1166
void open_and_parse_question(const task_context task,
 
1167
                             task_queue *const queue){
 
1168
  __attribute__((cleanup(cleanup_string)))
 
1169
    char *question_filename = task.question_filename;
 
1170
  const int epoll_fd = task.epoll_fd;
 
1171
  buffer *const password = task.password;
 
1172
  string_set *const cancelled_filenames = task.cancelled_filenames;
 
1173
  const mono_microsecs *const current_time = task.current_time;
 
1174
  bool *const mandos_client_exited = task.mandos_client_exited;
 
1175
  bool *const password_is_read = task.password_is_read;
 
1176
 
 
1177
  /* We use the GLib "Key-value file parser" functions to parse the
 
1178
     question file.  See <https://www.freedesktop.org/wiki/Software
 
1179
     /systemd/PasswordAgents/> for specification of contents */
 
1180
  __attribute__((nonnull))
 
1181
    void cleanup_g_key_file(GKeyFile **key_file){
 
1182
    if(*key_file != NULL){
 
1183
      g_key_file_free(*key_file);
 
1184
    }
 
1185
  }
 
1186
 
 
1187
  __attribute__((cleanup(cleanup_g_key_file)))
 
1188
    GKeyFile *key_file = g_key_file_new();
 
1189
  if(key_file == NULL){
 
1190
    error(0, errno, "Failed g_key_file_new() for \"%s\"",
 
1191
          question_filename);
 
1192
    return;
 
1193
  }
 
1194
  GError *glib_error = NULL;
 
1195
  if(g_key_file_load_from_file(key_file, question_filename,
 
1196
                               G_KEY_FILE_NONE, &glib_error) != TRUE){
 
1197
    /* If a file was removed, we should ignore it, so */
 
1198
    /* only show error message if file actually existed */
 
1199
    if(glib_error->code != G_FILE_ERROR_NOENT){
 
1200
      error(0, 0, "Failed to load question data from file \"%s\": %s",
 
1201
            question_filename, glib_error->message);
 
1202
    }
 
1203
    return;
 
1204
  }
 
1205
 
 
1206
  __attribute__((cleanup(cleanup_string)))
 
1207
    char *socket_name = g_key_file_get_string(key_file, "Ask",
 
1208
                                              "Socket",
 
1209
                                              &glib_error);
 
1210
  if(socket_name == NULL){
 
1211
    error(0, 0, "Question file \"%s\" did not contain \"Socket\": %s",
 
1212
          question_filename, glib_error->message);
 
1213
    return;
 
1214
  }
 
1215
 
 
1216
  if(strlen(socket_name) == 0){
 
1217
    error(0, 0, "Question file \"%s\" had empty \"Socket\" value",
 
1218
          question_filename);
 
1219
    return;
 
1220
  }
 
1221
 
 
1222
  const guint64 pid = g_key_file_get_uint64(key_file, "Ask", "PID",
 
1223
                                            &glib_error);
 
1224
  if(glib_error != NULL){
 
1225
    error(0, 0, "Question file \"%s\" contained bad \"PID\": %s",
 
1226
          question_filename, glib_error->message);
 
1227
    return;
 
1228
  }
 
1229
 
 
1230
  if((pid != (guint64)((pid_t)pid))
 
1231
     or (kill((pid_t)pid, 0) != 0)){
 
1232
    error(0, 0, "PID %" PRIuMAX " in question file \"%s\" is bad or"
 
1233
          " does not exist", (uintmax_t)pid, question_filename);
 
1234
    return;
 
1235
  }
 
1236
 
 
1237
  guint64 notafter = g_key_file_get_uint64(key_file, "Ask",
 
1238
                                           "NotAfter", &glib_error);
 
1239
  if(glib_error != NULL){
 
1240
    if(glib_error->code != G_KEY_FILE_ERROR_KEY_NOT_FOUND){
 
1241
      error(0, 0, "Question file \"%s\" contained bad \"NotAfter\":"
 
1242
            " %s", question_filename, glib_error->message);
 
1243
    }
 
1244
    notafter = 0;
 
1245
  }
 
1246
  if(notafter != 0){
 
1247
    if(queue->next_run == 0 or (queue->next_run > notafter)){
 
1248
      queue->next_run = notafter;
 
1249
    }
 
1250
    if(*current_time >= notafter){
 
1251
      return;
 
1252
    }
 
1253
  }
 
1254
 
 
1255
  const task_context connect_question_socket_task = {
 
1256
    .func=connect_question_socket,
 
1257
    .question_filename=strdup(question_filename),
 
1258
    .epoll_fd=epoll_fd,
 
1259
    .password=password,
 
1260
    .filename=strdup(socket_name),
 
1261
    .cancelled_filenames=task.cancelled_filenames,
 
1262
    .mandos_client_exited=mandos_client_exited,
 
1263
    .password_is_read=password_is_read,
 
1264
    .current_time=current_time,
 
1265
  };
 
1266
  if(connect_question_socket_task.question_filename == NULL
 
1267
     or connect_question_socket_task.filename == NULL
 
1268
     or not add_to_queue(queue, connect_question_socket_task)){
 
1269
    error(0, errno, "Failed to add connect_question_socket for socket"
 
1270
          " %s (from \"%s\") to queue", socket_name,
 
1271
          question_filename);
 
1272
    cleanup_task(&connect_question_socket_task);
 
1273
    return;
 
1274
  }
 
1275
  /* Force the added task (connect_question_socket) to run
 
1276
     immediately */
 
1277
  queue->next_run = 1;
 
1278
 
 
1279
  if(notafter > 0){
 
1280
    char *const dup_filename = strdup(question_filename);
 
1281
    const task_context cancel_old_question_task = {
 
1282
      .func=cancel_old_question,
 
1283
      .question_filename=dup_filename,
 
1284
      .notafter=notafter,
 
1285
      .filename=dup_filename,
 
1286
      .cancelled_filenames=cancelled_filenames,
 
1287
      .current_time=current_time,
 
1288
    };
 
1289
    if(cancel_old_question_task.question_filename == NULL
 
1290
       or not add_to_queue(queue, cancel_old_question_task)){
 
1291
      error(0, errno, "Failed to add cancel_old_question for file "
 
1292
            "\"%s\" to queue", question_filename);
 
1293
      cleanup_task(&cancel_old_question_task);
 
1294
      return;
 
1295
    }
 
1296
  }
 
1297
}
 
1298
 
 
1299
__attribute__((nonnull))
 
1300
void cancel_old_question(const task_context task,
 
1301
                         task_queue *const queue){
 
1302
  char *const question_filename = task.question_filename;
 
1303
  string_set *const cancelled_filenames = task.cancelled_filenames;
 
1304
  const mono_microsecs notafter = task.notafter;
 
1305
  const mono_microsecs *const current_time = task.current_time;
 
1306
 
 
1307
  if(*current_time >= notafter){
 
1308
    if(not string_set_add(cancelled_filenames, question_filename)){
 
1309
      error(0, errno, "Failed to cancel question for file %s",
 
1310
            question_filename);
 
1311
    }
 
1312
    cleanup_task(&task);
 
1313
    return;
 
1314
  }
 
1315
 
 
1316
  if(not add_to_queue(queue, task)){
 
1317
    error(0, errno, "Failed to add cancel_old_question for file "
 
1318
          "%s to queue", question_filename);
 
1319
    cleanup_task(&task);
 
1320
    return;
 
1321
  }
 
1322
 
 
1323
  if((queue->next_run == 0) or (queue->next_run > notafter)){
 
1324
    queue->next_run = notafter;
 
1325
  }
 
1326
}
 
1327
 
 
1328
__attribute__((nonnull))
 
1329
void connect_question_socket(const task_context task,
 
1330
                             task_queue *const queue){
 
1331
  char *const question_filename = task.question_filename;
 
1332
  char *const filename = task.filename;
 
1333
  const int epoll_fd = task.epoll_fd;
 
1334
  buffer *const password = task.password;
 
1335
  string_set *const cancelled_filenames = task.cancelled_filenames;
 
1336
  bool *const mandos_client_exited = task.mandos_client_exited;
 
1337
  bool *const password_is_read = task.password_is_read;
 
1338
  const mono_microsecs *const current_time = task.current_time;
 
1339
 
 
1340
  struct sockaddr_un sock_name = { .sun_family=AF_LOCAL };
 
1341
 
 
1342
  if(sizeof(sock_name.sun_path) <= strlen(filename)){
 
1343
    error(0, 0, "Socket filename is larger than"
 
1344
          " sizeof(sockaddr_un.sun_path); %" PRIuMAX ": \"%s\"",
 
1345
          (uintmax_t)sizeof(sock_name.sun_path), filename);
 
1346
    if(not string_set_add(cancelled_filenames, question_filename)){
 
1347
      error(0, errno, "Failed to cancel question for file %s",
 
1348
            question_filename);
 
1349
    }
 
1350
    cleanup_task(&task);
 
1351
    return;
 
1352
  }
 
1353
 
 
1354
  const int fd = socket(PF_LOCAL, SOCK_DGRAM
 
1355
                        | SOCK_NONBLOCK | SOCK_CLOEXEC, 0);
 
1356
  if(fd < 0){
 
1357
    error(0, errno,
 
1358
          "Failed to create socket(PF_LOCAL, SOCK_DGRAM, 0)");
 
1359
    if(not add_to_queue(queue, task)){
 
1360
      error(0, errno, "Failed to add connect_question_socket for file"
 
1361
            " \"%s\" and socket \"%s\" to queue", question_filename,
 
1362
            filename);
 
1363
      cleanup_task(&task);
 
1364
    } else {
 
1365
      /* Force the added task (connect_question_socket) to run
 
1366
         immediately */
 
1367
      queue->next_run = 1;
 
1368
    }
 
1369
    return;
 
1370
  }
 
1371
 
 
1372
  strncpy(sock_name.sun_path, filename, sizeof(sock_name.sun_path));
 
1373
  if(connect(fd, (struct sockaddr *)&sock_name,
 
1374
             (socklen_t)SUN_LEN(&sock_name)) != 0){
 
1375
    error(0, errno, "Failed to connect socket to \"%s\"", filename);
 
1376
    if(not add_to_queue(queue, task)){
 
1377
      error(0, errno, "Failed to add connect_question_socket for file"
 
1378
            " \"%s\" and socket \"%s\" to queue", question_filename,
 
1379
            filename);
 
1380
      cleanup_task(&task);
 
1381
    } else {
 
1382
      /* Force the added task (connect_question_socket) to run again,
 
1383
         at most one second from now */
 
1384
      if((queue->next_run == 0)
 
1385
         or (queue->next_run > (*current_time + 1000000))){
 
1386
        queue->next_run = *current_time + 1000000;
 
1387
      }
 
1388
    }
 
1389
    return;
 
1390
  }
 
1391
 
 
1392
  /* Not necessary, but we can try, and merely warn on failure */
 
1393
  if(shutdown(fd, SHUT_RD) != 0){
 
1394
    error(0, errno, "Failed to shutdown reading from socket \"%s\"",
 
1395
          filename);
 
1396
  }
 
1397
 
 
1398
  /* Add the fd to the epoll set */
 
1399
  if(epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd,
 
1400
               &(struct epoll_event){ .events=EPOLLOUT })
 
1401
     != 0){
 
1402
    error(0, errno, "Failed to add inotify file descriptor %d for"
 
1403
          " socket %s to epoll set", fd, filename);
 
1404
    if(not add_to_queue(queue, task)){
 
1405
      error(0, errno, "Failed to add connect_question_socket for file"
 
1406
            " \"%s\" and socket \"%s\" to queue", question_filename,
 
1407
            filename);
 
1408
      cleanup_task(&task);
 
1409
    } else {
 
1410
      /* Force the added task (connect_question_socket) to run again,
 
1411
         at most one second from now */
 
1412
      if((queue->next_run == 0)
 
1413
         or (queue->next_run > (*current_time + 1000000))){
 
1414
        queue->next_run = *current_time + 1000000;
 
1415
      }
 
1416
    }
 
1417
    return;
 
1418
  }
 
1419
 
 
1420
  /* add task send_password_to_socket to queue */
 
1421
  const task_context send_password_to_socket_task = {
 
1422
    .func=send_password_to_socket,
 
1423
    .question_filename=question_filename,
 
1424
    .filename=filename,
 
1425
    .epoll_fd=epoll_fd,
 
1426
    .fd=fd,
 
1427
    .password=password,
 
1428
    .cancelled_filenames=cancelled_filenames,
 
1429
    .mandos_client_exited=mandos_client_exited,
 
1430
    .password_is_read=password_is_read,
 
1431
    .current_time=current_time,
 
1432
  };
 
1433
 
 
1434
  if(not add_to_queue(queue, send_password_to_socket_task)){
 
1435
    error(0, errno, "Failed to add send_password_to_socket for"
 
1436
          " file \"%s\" and socket \"%s\" to queue",
 
1437
          question_filename, filename);
 
1438
    cleanup_task(&send_password_to_socket_task);
 
1439
  }
 
1440
}
 
1441
 
 
1442
__attribute__((nonnull))
 
1443
void send_password_to_socket(const task_context task,
 
1444
                             task_queue *const queue){
 
1445
  char *const question_filename=task.question_filename;
 
1446
  char *const filename=task.filename;
 
1447
  const int epoll_fd=task.epoll_fd;
 
1448
  const int fd=task.fd;
 
1449
  buffer *const password=task.password;
 
1450
  string_set *const cancelled_filenames=task.cancelled_filenames;
 
1451
  bool *const mandos_client_exited = task.mandos_client_exited;
 
1452
  bool *const password_is_read = task.password_is_read;
 
1453
  const mono_microsecs *const current_time = task.current_time;
 
1454
 
 
1455
  if(*mandos_client_exited and *password_is_read){
 
1456
 
 
1457
    const size_t send_buffer_length = password->length + 2;
 
1458
    char *send_buffer = malloc(send_buffer_length);
 
1459
    if(send_buffer == NULL){
 
1460
      error(0, errno, "Failed to allocate send_buffer");
 
1461
    } else {
 
1462
      if(mlock(send_buffer, send_buffer_length) != 0){
 
1463
        /* Warn but do not treat as fatal error */
 
1464
        if(errno != EPERM and errno != ENOMEM){
 
1465
          error(0, errno, "Failed to lock memory for password"
 
1466
                " buffer");
 
1467
        }
 
1468
      }
 
1469
      /* “[…] send a single datagram to the socket consisting of the
 
1470
         password string either prefixed with "+" or with "-"
 
1471
         depending on whether the password entry was successful or
 
1472
         not. You may but don't have to include a final NUL byte in
 
1473
         your message.
 
1474
 
 
1475
         — <https://www.freedesktop.org/wiki/Software/systemd/
 
1476
         PasswordAgents/> (Wed 08 Oct 2014 02:14:28 AM UTC)
 
1477
      */
 
1478
      send_buffer[0] = '+';     /* Prefix with "+" */
 
1479
      /* Always add an extra NUL */
 
1480
      send_buffer[password->length + 1] = '\0';
 
1481
      if(password->length > 0){
 
1482
        memcpy(send_buffer + 1, password->data, password->length);
 
1483
      }
 
1484
      errno = 0;
 
1485
      ssize_t ssret = send(fd, send_buffer, send_buffer_length,
 
1486
                           MSG_NOSIGNAL);
 
1487
      const error_t saved_errno = errno;
 
1488
#if defined(__GLIBC_PREREQ) and __GLIBC_PREREQ(2, 25)
 
1489
      explicit_bzero(send_buffer, send_buffer_length);
 
1490
#else
 
1491
      memset(send_buffer, '\0', send_buffer_length);
 
1492
#endif
 
1493
      if(munlock(send_buffer, send_buffer_length) != 0){
 
1494
        error(0, errno, "Failed to unlock memory of send buffer");
 
1495
      }
 
1496
      free(send_buffer);
 
1497
      if(ssret < 0 or ssret < (ssize_t)send_buffer_length){
 
1498
        switch(saved_errno){
 
1499
        case EINTR:
 
1500
        case ENOBUFS:
 
1501
        case ENOMEM:
 
1502
        case EADDRINUSE:
 
1503
        case ECONNREFUSED:
 
1504
        case ECONNRESET:
 
1505
        case ENOENT:
 
1506
        case ETOOMANYREFS:
 
1507
        case EAGAIN:
 
1508
          /* Retry, below */
 
1509
          break;
 
1510
        case EMSGSIZE:
 
1511
          error(0, 0, "Password of size %" PRIuMAX " is too big",
 
1512
                (uintmax_t)password->length);
 
1513
#if __GNUC__ < 7
 
1514
          /* FALLTHROUGH */
 
1515
#else
 
1516
          __attribute__((fallthrough));
 
1517
#endif
 
1518
        case 0:
 
1519
          if(ssret >= 0 and ssret < (ssize_t)send_buffer_length){
 
1520
            error(0, 0, "Password only partially sent to socket");
 
1521
          }
 
1522
#if __GNUC__ < 7
 
1523
          /* FALLTHROUGH */
 
1524
#else
 
1525
          __attribute__((fallthrough));
 
1526
#endif
 
1527
        default:
 
1528
          error(0, saved_errno, "Failed to send() to socket %s",
 
1529
                filename);
 
1530
          if(not string_set_add(cancelled_filenames,
 
1531
                                question_filename)){
 
1532
            error(0, errno, "Failed to cancel question for file %s",
 
1533
                  question_filename);
 
1534
          }
 
1535
          cleanup_task(&task);
 
1536
          return;
 
1537
        }
 
1538
      } else {
 
1539
        /* Success */
 
1540
        cleanup_task(&task);
 
1541
        return;
 
1542
      }
 
1543
    }
 
1544
  }
 
1545
 
 
1546
  /* We failed or are not ready yet; retry later */
 
1547
 
 
1548
  if(not add_to_queue(queue, task)){
 
1549
    error(0, errno, "Failed to add send_password_to_socket for"
 
1550
          " file %s and socket %s to queue", question_filename,
 
1551
          filename);
 
1552
    cleanup_task(&task);
 
1553
  }
 
1554
 
 
1555
  /* Add the fd to the epoll set */
 
1556
  if(epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd,
 
1557
               &(struct epoll_event){ .events=EPOLLOUT })
 
1558
     != 0){
 
1559
    error(0, errno, "Failed to add socket file descriptor %d for"
 
1560
          " socket %s to epoll set", fd, filename);
 
1561
    /* Force the added task (send_password_to_socket) to run again, at
 
1562
       most one second from now */
 
1563
    if((queue->next_run == 0)
 
1564
       or (queue->next_run > (*current_time + 1000000))){
 
1565
      queue->next_run = *current_time + 1000000;
 
1566
    }
 
1567
  }
 
1568
}
 
1569
 
 
1570
__attribute__((warn_unused_result))
 
1571
bool add_existing_questions(task_queue *const queue,
 
1572
                            const int epoll_fd,
 
1573
                            buffer *const password,
 
1574
                            string_set *cancelled_filenames,
 
1575
                            const mono_microsecs *const current_time,
 
1576
                            bool *const mandos_client_exited,
 
1577
                            bool *const password_is_read,
 
1578
                            const char *const dirname){
 
1579
  __attribute__((cleanup(cleanup_string)))
 
1580
    char *dir_pattern = NULL;
 
1581
  const int ret = asprintf(&dir_pattern, "%s/ask.*", dirname);
 
1582
  if(ret < 0 or dir_pattern == NULL){
 
1583
    error(0, errno, "Could not create glob pattern for directory %s",
 
1584
          dirname);
 
1585
    return false;
 
1586
  }
 
1587
  __attribute__((cleanup(globfree)))
 
1588
    glob_t question_filenames = {};
 
1589
  switch(glob(dir_pattern, GLOB_ERR | GLOB_NOSORT | GLOB_MARK,
 
1590
              NULL, &question_filenames)){
 
1591
  case GLOB_ABORTED:
 
1592
  default:
 
1593
    error(0, errno, "Failed to open directory %s", dirname);
 
1594
    return false;
 
1595
  case GLOB_NOMATCH:
 
1596
    error(0, errno, "There are no question files in %s", dirname);
 
1597
    return false;
 
1598
  case GLOB_NOSPACE:
 
1599
    error(0, errno, "Could not allocate memory for question file"
 
1600
          " names in %s", dirname);
 
1601
#if __GNUC__ < 7
 
1602
    /* FALLTHROUGH */
 
1603
#else
 
1604
    __attribute__((fallthrough));
 
1605
#endif
 
1606
  case 0:
 
1607
    for(size_t i = 0; i < question_filenames.gl_pathc; i++){
 
1608
      char *const question_filename = strdup(question_filenames
 
1609
                                             .gl_pathv[i]);
 
1610
      const task_context task = {
 
1611
        .func=open_and_parse_question,
 
1612
        .epoll_fd=epoll_fd,
 
1613
        .question_filename=question_filename,
 
1614
        .filename=question_filename,
 
1615
        .password=password,
 
1616
        .cancelled_filenames=cancelled_filenames,
 
1617
        .current_time=current_time,
 
1618
        .mandos_client_exited=mandos_client_exited,
 
1619
        .password_is_read=password_is_read,
 
1620
      };
 
1621
 
 
1622
      if(question_filename == NULL
 
1623
         or not add_to_queue(queue, task)){
 
1624
        error(0, errno, "Failed to add open_and_parse_question for"
 
1625
              " file %s to queue",
 
1626
              question_filenames.gl_pathv[i]);
 
1627
        free(question_filename);
 
1628
      } else {
 
1629
        queue->next_run = 1;
 
1630
      }
 
1631
    }
 
1632
    return true;
 
1633
  }
 
1634
}
 
1635
 
 
1636
__attribute__((nonnull, warn_unused_result))
 
1637
bool wait_for_event(const int epoll_fd,
 
1638
                    const mono_microsecs queue_next_run,
 
1639
                    const mono_microsecs current_time){
 
1640
  __attribute__((const))
 
1641
    int milliseconds_to_wait(const mono_microsecs currtime,
 
1642
                             const mono_microsecs nextrun){
 
1643
    if(currtime >= nextrun){
 
1644
      return 0;
 
1645
    }
 
1646
    const uintmax_t wait_time_ms = (nextrun - currtime) / 1000;
 
1647
    if(wait_time_ms > (uintmax_t)INT_MAX){
 
1648
      return INT_MAX;
 
1649
    }
 
1650
    return (int)wait_time_ms;
 
1651
  }
 
1652
 
 
1653
  const int wait_time_ms = milliseconds_to_wait(current_time,
 
1654
                                                queue_next_run);
 
1655
 
 
1656
  /* Prepare unblocking of SIGCHLD during epoll_pwait */
 
1657
  sigset_t temporary_unblocked_sigmask;
 
1658
  /* Get current signal mask */
 
1659
  if(pthread_sigmask(-1, NULL, &temporary_unblocked_sigmask) != 0){
 
1660
    return false;
 
1661
  }
 
1662
  /* Remove SIGCHLD from the signal mask */
 
1663
  if(sigdelset(&temporary_unblocked_sigmask, SIGCHLD) != 0){
 
1664
    return false;
 
1665
  }
 
1666
  struct epoll_event events[8]; /* Ignored */
 
1667
  int ret = epoll_pwait(epoll_fd, events,
 
1668
                        sizeof(events) / sizeof(struct epoll_event),
 
1669
                        queue_next_run == 0 ? -1 : (int)wait_time_ms,
 
1670
                        &temporary_unblocked_sigmask);
 
1671
  if(ret < 0 and errno != EINTR){
 
1672
    error(0, errno, "Failed epoll_pwait(epfd=%d, ..., timeout=%d,"
 
1673
          " ...", epoll_fd,
 
1674
          queue_next_run == 0 ? -1 : (int)wait_time_ms);
 
1675
    return false;
 
1676
  }
 
1677
  return clear_all_fds_from_epoll_set(epoll_fd);
 
1678
}
 
1679
 
 
1680
bool clear_all_fds_from_epoll_set(const int epoll_fd){
 
1681
  /* Create a new empty epoll set */
 
1682
  __attribute__((cleanup(cleanup_close)))
 
1683
    const int new_epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
1684
  if(new_epoll_fd < 0){
 
1685
    return false;
 
1686
  }
 
1687
  /* dup3() the new epoll set fd over the old one, replacing it */
 
1688
  if(dup3(new_epoll_fd, epoll_fd, O_CLOEXEC) < 0){
 
1689
    return false;
 
1690
  }
 
1691
  return true;
 
1692
}
 
1693
 
 
1694
__attribute__((nonnull, warn_unused_result))
 
1695
bool run_queue(task_queue **const queue,
 
1696
               string_set *const cancelled_filenames,
 
1697
               bool *const quit_now){
 
1698
 
 
1699
  task_queue *new_queue = create_queue();
 
1700
  if(new_queue == NULL){
 
1701
    return false;
 
1702
  }
 
1703
 
 
1704
  __attribute__((cleanup(string_set_clear)))
 
1705
    string_set old_cancelled_filenames = {};
 
1706
  string_set_swap(cancelled_filenames, &old_cancelled_filenames);
 
1707
 
 
1708
  /* Declare i outside the for loop, since we might need i after the
 
1709
     loop in case we aborted in the middle */
 
1710
  size_t i;
 
1711
  for(i=0; i < (*queue)->length and not *quit_now; i++){
 
1712
    task_context *const task = &((*queue)->tasks[i]);
 
1713
    const char *const question_filename = task->question_filename;
 
1714
    /* Skip any task referencing a cancelled question filename */
 
1715
    if(question_filename != NULL
 
1716
       and string_set_contains(old_cancelled_filenames,
 
1717
                               question_filename)){
 
1718
      cleanup_task(task);
 
1719
      continue;
 
1720
    }
 
1721
    task->func(*task, new_queue);
 
1722
  }
 
1723
 
 
1724
  if(*quit_now){
 
1725
    /* we might be in the middle of the queue, so clean up any
 
1726
       remaining tasks in the current queue */
 
1727
    for(; i < (*queue)->length; i++){
 
1728
      cleanup_task(&((*queue)->tasks[i]));
 
1729
    }
 
1730
    free_queue(*queue);
 
1731
    *queue = new_queue;
 
1732
    new_queue = NULL;
 
1733
    return false;
 
1734
  }
 
1735
  free_queue(*queue);
 
1736
  *queue = new_queue;
 
1737
  new_queue = NULL;
 
1738
 
 
1739
  return true;
 
1740
}
 
1741
 
 
1742
/* End of regular code section */
 
1743
 
 
1744
/* Start of tests section; here are the tests for the above code */
 
1745
 
 
1746
/* This "fixture" data structure is used by the test setup and
 
1747
   teardown functions */
 
1748
typedef struct {
 
1749
  struct sigaction orig_sigaction;
 
1750
  sigset_t orig_sigmask;
 
1751
} test_fixture;
 
1752
 
 
1753
static void test_setup(test_fixture *fixture,
 
1754
                       __attribute__((unused))
 
1755
                       gconstpointer user_data){
 
1756
  g_assert_true(setup_signal_handler(&fixture->orig_sigaction));
 
1757
  g_assert_true(block_sigchld(&fixture->orig_sigmask));
 
1758
}
 
1759
 
 
1760
static void test_teardown(test_fixture *fixture,
 
1761
                          __attribute__((unused))
 
1762
                          gconstpointer user_data){
 
1763
  g_assert_true(restore_signal_handler(&fixture->orig_sigaction));
 
1764
  g_assert_true(restore_sigmask(&fixture->orig_sigmask));
 
1765
}
 
1766
 
 
1767
/* Utility function used by tests to search queue for matching task */
 
1768
__attribute__((pure, nonnull, warn_unused_result))
 
1769
static task_context *find_matching_task(const task_queue *const queue,
 
1770
                                        const task_context task){
 
1771
  /* The argument "task" structure is a pattern to match; 0 in any
 
1772
     member means any value matches, otherwise the value must match.
 
1773
     The filename strings are compared by strcmp(), not by pointer. */
 
1774
  for(size_t i = 0; i < queue->length; i++){
 
1775
    task_context *const current_task = queue->tasks+i;
 
1776
    /* Check all members of task_context, if set to a non-zero value.
 
1777
       If a member does not match, continue to next task in queue */
 
1778
 
 
1779
    /* task_func *const func */
 
1780
    if(task.func != NULL and current_task->func != task.func){
 
1781
      continue;
 
1782
    }
 
1783
    /* char *const question_filename; */
 
1784
    if(task.question_filename != NULL
 
1785
       and (current_task->question_filename == NULL
 
1786
            or strcmp(current_task->question_filename,
 
1787
                      task.question_filename) != 0)){
 
1788
      continue;
 
1789
    }
 
1790
    /* const pid_t pid; */
 
1791
    if(task.pid != 0 and current_task->pid != task.pid){
 
1792
      continue;
 
1793
    }
 
1794
    /* const int epoll_fd; */
 
1795
    if(task.epoll_fd != 0
 
1796
       and current_task->epoll_fd != task.epoll_fd){
 
1797
      continue;
 
1798
    }
 
1799
    /* bool *const quit_now; */
 
1800
    if(task.quit_now != NULL
 
1801
       and current_task->quit_now != task.quit_now){
 
1802
      continue;
 
1803
    }
 
1804
    /* const int fd; */
 
1805
    if(task.fd != 0 and current_task->fd != task.fd){
 
1806
      continue;
 
1807
    }
 
1808
    /* bool *const mandos_client_exited; */
 
1809
    if(task.mandos_client_exited != NULL
 
1810
       and current_task->mandos_client_exited
 
1811
       != task.mandos_client_exited){
 
1812
      continue;
 
1813
    }
 
1814
    /* buffer *const password; */
 
1815
    if(task.password != NULL
 
1816
       and current_task->password != task.password){
 
1817
      continue;
 
1818
    }
 
1819
    /* bool *const password_is_read; */
 
1820
    if(task.password_is_read != NULL
 
1821
       and current_task->password_is_read != task.password_is_read){
 
1822
      continue;
 
1823
    }
 
1824
    /* char *filename; */
 
1825
    if(task.filename != NULL
 
1826
       and (current_task->filename == NULL
 
1827
            or strcmp(current_task->filename, task.filename) != 0)){
 
1828
      continue;
 
1829
    }
 
1830
    /* string_set *const cancelled_filenames; */
 
1831
    if(task.cancelled_filenames != NULL
 
1832
       and current_task->cancelled_filenames
 
1833
       != task.cancelled_filenames){
 
1834
      continue;
 
1835
    }
 
1836
    /* const mono_microsecs notafter; */
 
1837
    if(task.notafter != 0
 
1838
       and current_task->notafter != task.notafter){
 
1839
      continue;
 
1840
    }
 
1841
    /* const mono_microsecs *const current_time; */
 
1842
    if(task.current_time != NULL
 
1843
       and current_task->current_time != task.current_time){
 
1844
      continue;
 
1845
    }
 
1846
    /* Current task matches all members; return it */
 
1847
    return current_task;
 
1848
  }
 
1849
  /* No task in queue matches passed pattern task */
 
1850
  return NULL;
 
1851
}
 
1852
 
 
1853
static void test_create_queue(__attribute__((unused))
 
1854
                              test_fixture *fixture,
 
1855
                              __attribute__((unused))
 
1856
                              gconstpointer user_data){
 
1857
  __attribute__((cleanup(cleanup_queue)))
 
1858
    task_queue *const queue = create_queue();
 
1859
  g_assert_nonnull(queue);
 
1860
  g_assert_null(queue->tasks);
 
1861
  g_assert_true(queue->length == 0);
 
1862
  g_assert_true(queue->next_run == 0);
 
1863
}
 
1864
 
 
1865
static task_func dummy_func;
 
1866
 
 
1867
static void test_add_to_queue(__attribute__((unused))
 
1868
                              test_fixture *fixture,
 
1869
                              __attribute__((unused))
 
1870
                              gconstpointer user_data){
 
1871
  __attribute__((cleanup(cleanup_queue)))
 
1872
    task_queue *queue = create_queue();
 
1873
  g_assert_nonnull(queue);
 
1874
 
 
1875
  g_assert_true(add_to_queue(queue,
 
1876
                             (task_context){ .func=dummy_func }));
 
1877
  g_assert_true(queue->length == 1);
 
1878
  g_assert_nonnull(queue->tasks);
 
1879
  g_assert_true(queue->tasks[0].func == dummy_func);
 
1880
}
 
1881
 
 
1882
static void dummy_func(__attribute__((unused))
 
1883
                       const task_context task,
 
1884
                       __attribute__((unused))
 
1885
                       task_queue *const queue){
 
1886
}
 
1887
 
 
1888
static void test_queue_has_question_empty(__attribute__((unused))
 
1889
                                          test_fixture *fixture,
 
1890
                                          __attribute__((unused))
 
1891
                                          gconstpointer user_data){
 
1892
  __attribute__((cleanup(cleanup_queue)))
 
1893
    task_queue *queue = create_queue();
 
1894
  g_assert_nonnull(queue);
 
1895
  g_assert_false(queue_has_question(queue));
 
1896
}
 
1897
 
 
1898
static void test_queue_has_question_false(__attribute__((unused))
 
1899
                                          test_fixture *fixture,
 
1900
                                          __attribute__((unused))
 
1901
                                          gconstpointer user_data){
 
1902
  __attribute__((cleanup(cleanup_queue)))
 
1903
    task_queue *queue = create_queue();
 
1904
  g_assert_nonnull(queue);
 
1905
  g_assert_true(add_to_queue(queue,
 
1906
                             (task_context){ .func=dummy_func }));
 
1907
  g_assert_false(queue_has_question(queue));
 
1908
}
 
1909
 
 
1910
static void test_queue_has_question_true(__attribute__((unused))
 
1911
                                         test_fixture *fixture,
 
1912
                                         __attribute__((unused))
 
1913
                                         gconstpointer user_data){
 
1914
  __attribute__((cleanup(cleanup_queue)))
 
1915
    task_queue *queue = create_queue();
 
1916
  g_assert_nonnull(queue);
 
1917
  char *const question_filename
 
1918
    = strdup("/nonexistent/question_filename");
 
1919
  g_assert_nonnull(question_filename);
 
1920
  task_context task = {
 
1921
    .func=dummy_func,
 
1922
    .question_filename=question_filename,
 
1923
  };
 
1924
  g_assert_true(add_to_queue(queue, task));
 
1925
  g_assert_true(queue_has_question(queue));
 
1926
}
 
1927
 
 
1928
static void test_queue_has_question_false2(__attribute__((unused))
 
1929
                                           test_fixture *fixture,
 
1930
                                           __attribute__((unused))
 
1931
                                           gconstpointer user_data){
 
1932
  __attribute__((cleanup(cleanup_queue)))
 
1933
    task_queue *queue = create_queue();
 
1934
  g_assert_nonnull(queue);
 
1935
  task_context task = { .func=dummy_func };
 
1936
  g_assert_true(add_to_queue(queue, task));
 
1937
  g_assert_true(add_to_queue(queue, task));
 
1938
  g_assert_cmpint((int)queue->length, ==, 2);
 
1939
  g_assert_false(queue_has_question(queue));
 
1940
}
 
1941
 
 
1942
static void test_queue_has_question_true2(__attribute__((unused))
 
1943
                                          test_fixture *fixture,
 
1944
                                          __attribute__((unused))
 
1945
                                          gconstpointer user_data){
 
1946
  __attribute__((cleanup(cleanup_queue)))
 
1947
    task_queue *queue = create_queue();
 
1948
  g_assert_nonnull(queue);
 
1949
  task_context task1 = { .func=dummy_func };
 
1950
  g_assert_true(add_to_queue(queue, task1));
 
1951
  char *const question_filename
 
1952
    = strdup("/nonexistent/question_filename");
 
1953
  g_assert_nonnull(question_filename);
 
1954
  task_context task2 = {
 
1955
    .func=dummy_func,
 
1956
    .question_filename=question_filename,
 
1957
  };
 
1958
  g_assert_true(add_to_queue(queue, task2));
 
1959
  g_assert_cmpint((int)queue->length, ==, 2);
 
1960
  g_assert_true(queue_has_question(queue));
 
1961
}
 
1962
 
 
1963
static void test_cleanup_buffer(__attribute__((unused))
 
1964
                                test_fixture *fixture,
 
1965
                                __attribute__((unused))
 
1966
                                gconstpointer user_data){
 
1967
  buffer buf = {};
 
1968
 
 
1969
  const size_t buffersize = 10;
 
1970
 
 
1971
  buf.data = malloc(buffersize);
 
1972
  g_assert_nonnull(buf.data);
 
1973
  if(mlock(buf.data, buffersize) != 0){
 
1974
    g_assert_true(errno == EPERM or errno == ENOMEM);
 
1975
  }
 
1976
 
 
1977
  cleanup_buffer(&buf);
 
1978
  g_assert_null(buf.data);
 
1979
}
 
1980
 
 
1981
static
 
1982
void test_string_set_new_set_contains_nothing(__attribute__((unused))
 
1983
                                              test_fixture *fixture,
 
1984
                                              __attribute__((unused))
 
1985
                                              gconstpointer
 
1986
                                              user_data){
 
1987
  __attribute__((cleanup(string_set_clear)))
 
1988
    string_set set = {};
 
1989
  g_assert_false(string_set_contains(set, "")); /* Empty string */
 
1990
  g_assert_false(string_set_contains(set, "test_string"));
 
1991
}
 
1992
 
 
1993
static void
 
1994
test_string_set_with_added_string_contains_it(__attribute__((unused))
 
1995
                                              test_fixture *fixture,
 
1996
                                              __attribute__((unused))
 
1997
                                              gconstpointer
 
1998
                                              user_data){
 
1999
  __attribute__((cleanup(string_set_clear)))
 
2000
    string_set set = {};
 
2001
  g_assert_true(string_set_add(&set, "test_string"));
 
2002
  g_assert_true(string_set_contains(set, "test_string"));
 
2003
}
 
2004
 
 
2005
static void
 
2006
test_string_set_cleared_does_not_contain_str(__attribute__((unused))
 
2007
                                             test_fixture *fixture,
 
2008
                                             __attribute__((unused))
 
2009
                                             gconstpointer user_data){
 
2010
  __attribute__((cleanup(string_set_clear)))
 
2011
    string_set set = {};
 
2012
  g_assert_true(string_set_add(&set, "test_string"));
 
2013
  string_set_clear(&set);
 
2014
  g_assert_false(string_set_contains(set, "test_string"));
 
2015
}
 
2016
 
 
2017
static
 
2018
void test_string_set_swap_one_with_empty(__attribute__((unused))
 
2019
                                         test_fixture *fixture,
 
2020
                                         __attribute__((unused))
 
2021
                                         gconstpointer user_data){
 
2022
  __attribute__((cleanup(string_set_clear)))
 
2023
    string_set set1 = {};
 
2024
  __attribute__((cleanup(string_set_clear)))
 
2025
    string_set set2 = {};
 
2026
  g_assert_true(string_set_add(&set1, "test_string1"));
 
2027
  string_set_swap(&set1, &set2);
 
2028
  g_assert_false(string_set_contains(set1, "test_string1"));
 
2029
  g_assert_true(string_set_contains(set2, "test_string1"));
 
2030
}
 
2031
 
 
2032
static
 
2033
void test_string_set_swap_empty_with_one(__attribute__((unused))
 
2034
                                         test_fixture *fixture,
 
2035
                                         __attribute__((unused))
 
2036
                                         gconstpointer user_data){
 
2037
  __attribute__((cleanup(string_set_clear)))
 
2038
    string_set set1 = {};
 
2039
  __attribute__((cleanup(string_set_clear)))
 
2040
    string_set set2 = {};
 
2041
  g_assert_true(string_set_add(&set2, "test_string2"));
 
2042
  string_set_swap(&set1, &set2);
 
2043
  g_assert_true(string_set_contains(set1, "test_string2"));
 
2044
  g_assert_false(string_set_contains(set2, "test_string2"));
 
2045
}
 
2046
 
 
2047
static void test_string_set_swap_one_with_one(__attribute__((unused))
 
2048
                                              test_fixture *fixture,
 
2049
                                              __attribute__((unused))
 
2050
                                              gconstpointer
 
2051
                                              user_data){
 
2052
  __attribute__((cleanup(string_set_clear)))
 
2053
    string_set set1 = {};
 
2054
  __attribute__((cleanup(string_set_clear)))
 
2055
    string_set set2 = {};
 
2056
  g_assert_true(string_set_add(&set1, "test_string1"));
 
2057
  g_assert_true(string_set_add(&set2, "test_string2"));
 
2058
  string_set_swap(&set1, &set2);
 
2059
  g_assert_false(string_set_contains(set1, "test_string1"));
 
2060
  g_assert_true(string_set_contains(set1, "test_string2"));
 
2061
  g_assert_false(string_set_contains(set2, "test_string2"));
 
2062
  g_assert_true(string_set_contains(set2, "test_string1"));
 
2063
}
 
2064
 
 
2065
static bool fd_has_cloexec_and_nonblock(const int);
 
2066
 
 
2067
static bool epoll_set_contains(int, int, uint32_t);
 
2068
 
 
2069
static void test_start_mandos_client(test_fixture *fixture,
 
2070
                                     __attribute__((unused))
 
2071
                                     gconstpointer user_data){
 
2072
 
 
2073
  bool mandos_client_exited = false;
 
2074
  bool quit_now = false;
 
2075
  __attribute__((cleanup(cleanup_close)))
 
2076
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
2077
  g_assert_cmpint(epoll_fd, >=, 0);
 
2078
  __attribute__((cleanup(cleanup_queue)))
 
2079
    task_queue *queue = create_queue();
 
2080
  g_assert_nonnull(queue);
 
2081
  buffer password = {};
 
2082
  bool password_is_read = false;
 
2083
  const char helper_directory[] = "/nonexistent";
 
2084
  const char *const argv[] = { "/bin/true", NULL };
 
2085
 
 
2086
  g_assert_true(start_mandos_client(queue, epoll_fd,
 
2087
                                    &mandos_client_exited, &quit_now,
 
2088
                                    &password, &password_is_read,
 
2089
                                    &fixture->orig_sigaction,
 
2090
                                    fixture->orig_sigmask,
 
2091
                                    helper_directory, 0, 0, argv));
 
2092
 
 
2093
  g_assert_cmpuint((unsigned int)queue->length, >=, 2);
 
2094
 
 
2095
  const task_context *const added_wait_task
 
2096
    = find_matching_task(queue, (task_context){
 
2097
        .func=wait_for_mandos_client_exit,
 
2098
        .mandos_client_exited=&mandos_client_exited,
 
2099
        .quit_now=&quit_now,
 
2100
      });
 
2101
  g_assert_nonnull(added_wait_task);
 
2102
  g_assert_cmpint(added_wait_task->pid, >, 0);
 
2103
  g_assert_cmpint(kill(added_wait_task->pid, SIGKILL), ==, 0);
 
2104
  waitpid(added_wait_task->pid, NULL, 0);
 
2105
 
 
2106
  const task_context *const added_read_task
 
2107
    = find_matching_task(queue, (task_context){
 
2108
        .func=read_mandos_client_output,
 
2109
        .epoll_fd=epoll_fd,
 
2110
        .password=&password,
 
2111
        .password_is_read=&password_is_read,
 
2112
        .quit_now=&quit_now,
 
2113
      });
 
2114
  g_assert_nonnull(added_read_task);
 
2115
  g_assert_cmpint(added_read_task->fd, >, 2);
 
2116
  g_assert_true(fd_has_cloexec_and_nonblock(added_read_task->fd));
 
2117
  g_assert_true(epoll_set_contains(epoll_fd, added_read_task->fd,
 
2118
                                   EPOLLIN | EPOLLRDHUP));
 
2119
}
 
2120
 
 
2121
static bool fd_has_cloexec_and_nonblock(const int fd){
 
2122
  const int socket_fd_flags = fcntl(fd, F_GETFD, 0);
 
2123
  const int socket_file_flags = fcntl(fd, F_GETFL, 0);
 
2124
  return ((socket_fd_flags >= 0)
 
2125
          and (socket_fd_flags & FD_CLOEXEC)
 
2126
          and (socket_file_flags >= 0)
 
2127
          and (socket_file_flags & O_NONBLOCK));
 
2128
}
 
2129
 
 
2130
__attribute__((const))
 
2131
bool is_privileged(void){
 
2132
  uid_t user = getuid() + 1;
 
2133
  if(user == 0){                /* Overflow check */
 
2134
    user++;
 
2135
  }
 
2136
  gid_t group = getuid() + 1;
 
2137
  if(group == 0){               /* Overflow check */
 
2138
    group++;
 
2139
  }
 
2140
  const pid_t pid = fork();
 
2141
  if(pid == 0){                 /* Child */
 
2142
    if(setresgid((uid_t)-1, group, group) == -1){
 
2143
      if(errno != EPERM){
 
2144
        error(EXIT_FAILURE, errno, "Failed to setresgid(-1, %" PRIuMAX
 
2145
              ", %" PRIuMAX")", (uintmax_t)group, (uintmax_t)group);
 
2146
      }
 
2147
      exit(EXIT_FAILURE);
 
2148
    }
 
2149
    if(setresuid((uid_t)-1, user, user) == -1){
 
2150
      if(errno != EPERM){
 
2151
        error(EXIT_FAILURE, errno, "Failed to setresuid(-1, %" PRIuMAX
 
2152
              ", %" PRIuMAX")", (uintmax_t)user, (uintmax_t)user);
 
2153
      }
 
2154
      exit(EXIT_FAILURE);
 
2155
    }
 
2156
    exit(EXIT_SUCCESS);
 
2157
  }
 
2158
  int status;
 
2159
  waitpid(pid, &status, 0);
 
2160
  if(WIFEXITED(status) and (WEXITSTATUS(status) == EXIT_SUCCESS)){
 
2161
    return true;
 
2162
  }
 
2163
  return false;
 
2164
}
 
2165
 
 
2166
static bool epoll_set_contains(int epoll_fd, int fd, uint32_t events){
 
2167
  /* Only scan for events in this eventmask */
 
2168
  const uint32_t eventmask = EPOLLIN | EPOLLOUT | EPOLLRDHUP;
 
2169
  __attribute__((cleanup(cleanup_string)))
 
2170
    char *fdinfo_name = NULL;
 
2171
  int ret = asprintf(&fdinfo_name, "/proc/self/fdinfo/%d", epoll_fd);
 
2172
  g_assert_cmpint(ret, >, 0);
 
2173
  g_assert_nonnull(fdinfo_name);
 
2174
 
 
2175
  FILE *fdinfo = fopen(fdinfo_name, "r");
 
2176
  g_assert_nonnull(fdinfo);
 
2177
  uint32_t reported_events;
 
2178
  buffer line = {};
 
2179
  int found_fd = -1;
 
2180
 
 
2181
  do {
 
2182
    if(getline(&line.data, &line.allocated, fdinfo) < 0){
 
2183
      break;
 
2184
    }
 
2185
    /* See proc(5) for format of /proc/PID/fdinfo/FD for epoll fd's */
 
2186
    if(sscanf(line.data, "tfd: %d events: %" SCNx32 " ",
 
2187
              &found_fd, &reported_events) == 2){
 
2188
      if(found_fd == fd){
 
2189
        break;
 
2190
      }
 
2191
    }
 
2192
  } while(not feof(fdinfo) and not ferror(fdinfo));
 
2193
  g_assert_cmpint(fclose(fdinfo), ==, 0);
 
2194
  free(line.data);
 
2195
  if(found_fd != fd){
 
2196
    return false;
 
2197
  }
 
2198
 
 
2199
  if(events == 0){
 
2200
    /* Don't check events if none are given */
 
2201
    return true;
 
2202
  }
 
2203
  return (reported_events & eventmask) == (events & eventmask);
 
2204
}
 
2205
 
 
2206
static void test_start_mandos_client_execv(test_fixture *fixture,
 
2207
                                           __attribute__((unused))
 
2208
                                           gconstpointer user_data){
 
2209
  bool mandos_client_exited = false;
 
2210
  bool quit_now = false;
 
2211
  __attribute__((cleanup(cleanup_close)))
 
2212
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
2213
  g_assert_cmpint(epoll_fd, >=, 0);
 
2214
  __attribute__((cleanup(cleanup_queue)))
 
2215
    task_queue *queue = create_queue();
 
2216
  g_assert_nonnull(queue);
 
2217
  __attribute__((cleanup(cleanup_buffer)))
 
2218
    buffer password = {};
 
2219
  const char helper_directory[] = "/nonexistent";
 
2220
  /* Can't execv("/", ...), so this should fail */
 
2221
  const char *const argv[] = { "/", NULL };
 
2222
 
 
2223
  {
 
2224
    __attribute__((cleanup(cleanup_close)))
 
2225
      const int devnull_fd = open("/dev/null", O_WRONLY | O_CLOEXEC);
 
2226
    g_assert_cmpint(devnull_fd, >=, 0);
 
2227
    __attribute__((cleanup(cleanup_close)))
 
2228
      const int real_stderr_fd = dup(STDERR_FILENO);
 
2229
    g_assert_cmpint(real_stderr_fd, >=, 0);
 
2230
    dup2(devnull_fd, STDERR_FILENO);
 
2231
 
 
2232
    const bool success = start_mandos_client(queue, epoll_fd,
 
2233
                                             &mandos_client_exited,
 
2234
                                             &quit_now,
 
2235
                                             &password,
 
2236
                                             (bool[]){false},
 
2237
                                             &fixture->orig_sigaction,
 
2238
                                             fixture->orig_sigmask,
 
2239
                                             helper_directory, 0, 0,
 
2240
                                             argv);
 
2241
    dup2(real_stderr_fd, STDERR_FILENO);
 
2242
    g_assert_true(success);
 
2243
  }
 
2244
  g_assert_cmpuint((unsigned int)queue->length, ==, 2);
 
2245
 
 
2246
  struct timespec starttime, currtime;
 
2247
  g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);
 
2248
  do {
 
2249
    queue->next_run = 0;
 
2250
    string_set cancelled_filenames = {};
 
2251
 
 
2252
    {
 
2253
      __attribute__((cleanup(cleanup_close)))
 
2254
        const int devnull_fd = open("/dev/null",
 
2255
                                    O_WRONLY | O_CLOEXEC);
 
2256
      g_assert_cmpint(devnull_fd, >=, 0);
 
2257
      __attribute__((cleanup(cleanup_close)))
 
2258
        const int real_stderr_fd = dup(STDERR_FILENO);
 
2259
      g_assert_cmpint(real_stderr_fd, >=, 0);
 
2260
      g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));
 
2261
      dup2(devnull_fd, STDERR_FILENO);
 
2262
      const bool success = run_queue(&queue, &cancelled_filenames,
 
2263
                                     &quit_now);
 
2264
      dup2(real_stderr_fd, STDERR_FILENO);
 
2265
      if(not success){
 
2266
        break;
 
2267
      }
 
2268
    }
 
2269
    g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);
 
2270
  } while(((queue->length) > 0)
 
2271
          and (not quit_now)
 
2272
          and ((currtime.tv_sec - starttime.tv_sec) < 10));
 
2273
 
 
2274
  g_assert_true(quit_now);
 
2275
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
2276
  g_assert_true(mandos_client_exited);
 
2277
}
 
2278
 
 
2279
static void test_start_mandos_client_suid_euid(test_fixture *fixture,
 
2280
                                               __attribute__((unused))
 
2281
                                               gconstpointer
 
2282
                                               user_data){
 
2283
  if(not is_privileged()){
 
2284
    g_test_skip("Not privileged");
 
2285
    return;
 
2286
  }
 
2287
 
 
2288
  bool mandos_client_exited = false;
 
2289
  bool quit_now = false;
 
2290
  __attribute__((cleanup(cleanup_close)))
 
2291
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
2292
  g_assert_cmpint(epoll_fd, >=, 0);
 
2293
  __attribute__((cleanup(cleanup_queue)))
 
2294
    task_queue *queue = create_queue();
 
2295
  g_assert_nonnull(queue);
 
2296
  __attribute__((cleanup(cleanup_buffer)))
 
2297
    buffer password = {};
 
2298
  bool password_is_read = false;
 
2299
  const char helper_directory[] = "/nonexistent";
 
2300
  const char *const argv[] = { "/usr/bin/id", "--user", NULL };
 
2301
  uid_t user = 1000;
 
2302
  gid_t group = 1001;
 
2303
 
 
2304
  const bool success = start_mandos_client(queue, epoll_fd,
 
2305
                                           &mandos_client_exited,
 
2306
                                           &quit_now, &password,
 
2307
                                           &password_is_read,
 
2308
                                           &fixture->orig_sigaction,
 
2309
                                           fixture->orig_sigmask,
 
2310
                                           helper_directory, user,
 
2311
                                           group, argv);
 
2312
  g_assert_true(success);
 
2313
  g_assert_cmpuint((unsigned int)queue->length, >, 0);
 
2314
 
 
2315
  struct timespec starttime, currtime;
 
2316
  g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);
 
2317
  do {
 
2318
    queue->next_run = 0;
 
2319
    string_set cancelled_filenames = {};
 
2320
    g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));
 
2321
    g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));
 
2322
    g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);
 
2323
  } while(((queue->length) > 0)
 
2324
          and (not quit_now)
 
2325
          and ((currtime.tv_sec - starttime.tv_sec) < 10));
 
2326
 
 
2327
  g_assert_false(quit_now);
 
2328
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
2329
  g_assert_true(mandos_client_exited);
 
2330
 
 
2331
  g_assert_true(password_is_read);
 
2332
  g_assert_nonnull(password.data);
 
2333
 
 
2334
  uintmax_t id;
 
2335
  g_assert_cmpint(sscanf(password.data, "%" SCNuMAX "\n", &id),
 
2336
                  ==, 1);
 
2337
  g_assert_true((uid_t)id == id);
 
2338
 
 
2339
  g_assert_cmpuint((unsigned int)id, ==, 0);
 
2340
}
 
2341
 
 
2342
static void test_start_mandos_client_suid_egid(test_fixture *fixture,
 
2343
                                               __attribute__((unused))
 
2344
                                               gconstpointer
 
2345
                                               user_data){
 
2346
  if(not is_privileged()){
 
2347
    g_test_skip("Not privileged");
 
2348
    return;
 
2349
  }
 
2350
 
 
2351
  bool mandos_client_exited = false;
 
2352
  bool quit_now = false;
 
2353
  __attribute__((cleanup(cleanup_close)))
 
2354
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
2355
  g_assert_cmpint(epoll_fd, >=, 0);
 
2356
  __attribute__((cleanup(cleanup_queue)))
 
2357
    task_queue *queue = create_queue();
 
2358
  g_assert_nonnull(queue);
 
2359
  __attribute__((cleanup(cleanup_buffer)))
 
2360
    buffer password = {};
 
2361
  bool password_is_read = false;
 
2362
  const char helper_directory[] = "/nonexistent";
 
2363
  const char *const argv[] = { "/usr/bin/id", "--group", NULL };
 
2364
  uid_t user = 1000;
 
2365
  gid_t group = 1001;
 
2366
 
 
2367
  const bool success = start_mandos_client(queue, epoll_fd,
 
2368
                                           &mandos_client_exited,
 
2369
                                           &quit_now, &password,
 
2370
                                           &password_is_read,
 
2371
                                           &fixture->orig_sigaction,
 
2372
                                           fixture->orig_sigmask,
 
2373
                                           helper_directory, user,
 
2374
                                           group, argv);
 
2375
  g_assert_true(success);
 
2376
  g_assert_cmpuint((unsigned int)queue->length, >, 0);
 
2377
 
 
2378
  struct timespec starttime, currtime;
 
2379
  g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);
 
2380
  do {
 
2381
    queue->next_run = 0;
 
2382
    string_set cancelled_filenames = {};
 
2383
    g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));
 
2384
    g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));
 
2385
    g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);
 
2386
  } while(((queue->length) > 0)
 
2387
          and (not quit_now)
 
2388
          and ((currtime.tv_sec - starttime.tv_sec) < 10));
 
2389
 
 
2390
  g_assert_false(quit_now);
 
2391
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
2392
  g_assert_true(mandos_client_exited);
 
2393
 
 
2394
  g_assert_true(password_is_read);
 
2395
  g_assert_nonnull(password.data);
 
2396
 
 
2397
  uintmax_t id;
 
2398
  g_assert_cmpint(sscanf(password.data, "%" SCNuMAX "\n", &id),
 
2399
                  ==, 1);
 
2400
  g_assert_true((gid_t)id == id);
 
2401
 
 
2402
  g_assert_cmpuint((unsigned int)id, ==, 0);
 
2403
}
 
2404
 
 
2405
static void test_start_mandos_client_suid_ruid(test_fixture *fixture,
 
2406
                                               __attribute__((unused))
 
2407
                                               gconstpointer
 
2408
                                               user_data){
 
2409
  if(not is_privileged()){
 
2410
    g_test_skip("Not privileged");
 
2411
    return;
 
2412
  }
 
2413
 
 
2414
  bool mandos_client_exited = false;
 
2415
  bool quit_now = false;
 
2416
  __attribute__((cleanup(cleanup_close)))
 
2417
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
2418
  g_assert_cmpint(epoll_fd, >=, 0);
 
2419
  __attribute__((cleanup(cleanup_queue)))
 
2420
    task_queue *queue = create_queue();
 
2421
  g_assert_nonnull(queue);
 
2422
  __attribute__((cleanup(cleanup_buffer)))
 
2423
    buffer password = {};
 
2424
  bool password_is_read = false;
 
2425
  const char helper_directory[] = "/nonexistent";
 
2426
  const char *const argv[] = { "/usr/bin/id", "--user", "--real",
 
2427
    NULL };
 
2428
  uid_t user = 1000;
 
2429
  gid_t group = 1001;
 
2430
 
 
2431
  const bool success = start_mandos_client(queue, epoll_fd,
 
2432
                                           &mandos_client_exited,
 
2433
                                           &quit_now, &password,
 
2434
                                           &password_is_read,
 
2435
                                           &fixture->orig_sigaction,
 
2436
                                           fixture->orig_sigmask,
 
2437
                                           helper_directory, user,
 
2438
                                           group, argv);
 
2439
  g_assert_true(success);
 
2440
  g_assert_cmpuint((unsigned int)queue->length, >, 0);
 
2441
 
 
2442
  struct timespec starttime, currtime;
 
2443
  g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);
 
2444
  do {
 
2445
    queue->next_run = 0;
 
2446
    string_set cancelled_filenames = {};
 
2447
    g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));
 
2448
    g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));
 
2449
    g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);
 
2450
  } while(((queue->length) > 0)
 
2451
          and (not quit_now)
 
2452
          and ((currtime.tv_sec - starttime.tv_sec) < 10));
 
2453
 
 
2454
  g_assert_false(quit_now);
 
2455
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
2456
  g_assert_true(mandos_client_exited);
 
2457
 
 
2458
  g_assert_true(password_is_read);
 
2459
  g_assert_nonnull(password.data);
 
2460
 
 
2461
  uintmax_t id;
 
2462
  g_assert_cmpint(sscanf(password.data, "%" SCNuMAX "\n", &id),
 
2463
                  ==, 1);
 
2464
  g_assert_true((uid_t)id == id);
 
2465
 
 
2466
  g_assert_cmpuint((unsigned int)id, ==, user);
 
2467
}
 
2468
 
 
2469
static void test_start_mandos_client_suid_rgid(test_fixture *fixture,
 
2470
                                               __attribute__((unused))
 
2471
                                               gconstpointer
 
2472
                                               user_data){
 
2473
  if(not is_privileged()){
 
2474
    g_test_skip("Not privileged");
 
2475
    return;
 
2476
  }
 
2477
 
 
2478
  bool mandos_client_exited = false;
 
2479
  bool quit_now = false;
 
2480
  __attribute__((cleanup(cleanup_close)))
 
2481
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
2482
  g_assert_cmpint(epoll_fd, >=, 0);
 
2483
  __attribute__((cleanup(cleanup_queue)))
 
2484
    task_queue *queue = create_queue();
 
2485
  g_assert_nonnull(queue);
 
2486
  __attribute__((cleanup(cleanup_buffer)))
 
2487
    buffer password = {};
 
2488
  bool password_is_read = false;
 
2489
  const char helper_directory[] = "/nonexistent";
 
2490
  const char *const argv[] = { "/usr/bin/id", "--group", "--real",
 
2491
    NULL };
 
2492
  uid_t user = 1000;
 
2493
  gid_t group = 1001;
 
2494
 
 
2495
  const bool success = start_mandos_client(queue, epoll_fd,
 
2496
                                           &mandos_client_exited,
 
2497
                                           &quit_now, &password,
 
2498
                                           &password_is_read,
 
2499
                                           &fixture->orig_sigaction,
 
2500
                                           fixture->orig_sigmask,
 
2501
                                           helper_directory, user,
 
2502
                                           group, argv);
 
2503
  g_assert_true(success);
 
2504
  g_assert_cmpuint((unsigned int)queue->length, >, 0);
 
2505
 
 
2506
  struct timespec starttime, currtime;
 
2507
  g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);
 
2508
  do {
 
2509
    queue->next_run = 0;
 
2510
    string_set cancelled_filenames = {};
 
2511
    g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));
 
2512
    g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));
 
2513
    g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);
 
2514
  } while(((queue->length) > 0)
 
2515
          and (not quit_now)
 
2516
          and ((currtime.tv_sec - starttime.tv_sec) < 10));
 
2517
 
 
2518
  g_assert_false(quit_now);
 
2519
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
2520
  g_assert_true(mandos_client_exited);
 
2521
 
 
2522
  g_assert_true(password_is_read);
 
2523
  g_assert_nonnull(password.data);
 
2524
 
 
2525
  uintmax_t id;
 
2526
  g_assert_cmpint(sscanf(password.data, "%" SCNuMAX "\n", &id),
 
2527
                  ==, 1);
 
2528
  g_assert_true((gid_t)id == id);
 
2529
 
 
2530
  g_assert_cmpuint((unsigned int)id, ==, group);
 
2531
}
 
2532
 
 
2533
static void test_start_mandos_client_read(test_fixture *fixture,
 
2534
                                          __attribute__((unused))
 
2535
                                          gconstpointer user_data){
 
2536
  bool mandos_client_exited = false;
 
2537
  bool quit_now = false;
 
2538
  __attribute__((cleanup(cleanup_close)))
 
2539
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
2540
  g_assert_cmpint(epoll_fd, >=, 0);
 
2541
  __attribute__((cleanup(cleanup_queue)))
 
2542
    task_queue *queue = create_queue();
 
2543
  g_assert_nonnull(queue);
 
2544
  __attribute__((cleanup(cleanup_buffer)))
 
2545
    buffer password = {};
 
2546
  bool password_is_read = false;
 
2547
  const char dummy_test_password[] = "dummy test password";
 
2548
  const char helper_directory[] = "/nonexistent";
 
2549
  const char *const argv[] = { "/bin/echo", "-n", dummy_test_password,
 
2550
    NULL };
 
2551
 
 
2552
  const bool success = start_mandos_client(queue, epoll_fd,
 
2553
                                           &mandos_client_exited,
 
2554
                                           &quit_now, &password,
 
2555
                                           &password_is_read,
 
2556
                                           &fixture->orig_sigaction,
 
2557
                                           fixture->orig_sigmask,
 
2558
                                           helper_directory, 0, 0,
 
2559
                                           argv);
 
2560
  g_assert_true(success);
 
2561
  g_assert_cmpuint((unsigned int)queue->length, >, 0);
 
2562
 
 
2563
  struct timespec starttime, currtime;
 
2564
  g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);
 
2565
  do {
 
2566
    queue->next_run = 0;
 
2567
    string_set cancelled_filenames = {};
 
2568
    g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));
 
2569
    g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));
 
2570
    g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);
 
2571
  } while(((queue->length) > 0)
 
2572
          and (not quit_now)
 
2573
          and ((currtime.tv_sec - starttime.tv_sec) < 10));
 
2574
 
 
2575
  g_assert_false(quit_now);
 
2576
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
2577
  g_assert_true(mandos_client_exited);
 
2578
 
 
2579
  g_assert_true(password_is_read);
 
2580
  g_assert_cmpint((int)password.length, ==,
 
2581
                  sizeof(dummy_test_password)-1);
 
2582
  g_assert_nonnull(password.data);
 
2583
  g_assert_cmpint(memcmp(dummy_test_password, password.data,
 
2584
                         sizeof(dummy_test_password)-1), ==, 0);
 
2585
}
 
2586
 
 
2587
static
 
2588
void test_start_mandos_client_helper_directory(test_fixture *fixture,
 
2589
                                               __attribute__((unused))
 
2590
                                               gconstpointer
 
2591
                                               user_data){
 
2592
  bool mandos_client_exited = false;
 
2593
  bool quit_now = false;
 
2594
  __attribute__((cleanup(cleanup_close)))
 
2595
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
2596
  g_assert_cmpint(epoll_fd, >=, 0);
 
2597
  __attribute__((cleanup(cleanup_queue)))
 
2598
    task_queue *queue = create_queue();
 
2599
  g_assert_nonnull(queue);
 
2600
  __attribute__((cleanup(cleanup_buffer)))
 
2601
    buffer password = {};
 
2602
  bool password_is_read = false;
 
2603
  const char helper_directory[] = "/nonexistent";
 
2604
  const char *const argv[] = { "/bin/sh", "-c",
 
2605
    "echo -n ${MANDOSPLUGINHELPERDIR}", NULL };
 
2606
 
 
2607
  const bool success = start_mandos_client(queue, epoll_fd,
 
2608
                                           &mandos_client_exited,
 
2609
                                           &quit_now, &password,
 
2610
                                           &password_is_read,
 
2611
                                           &fixture->orig_sigaction,
 
2612
                                           fixture->orig_sigmask,
 
2613
                                           helper_directory, 0, 0,
 
2614
                                           argv);
 
2615
  g_assert_true(success);
 
2616
  g_assert_cmpuint((unsigned int)queue->length, >, 0);
 
2617
 
 
2618
  struct timespec starttime, currtime;
 
2619
  g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);
 
2620
  do {
 
2621
    queue->next_run = 0;
 
2622
    string_set cancelled_filenames = {};
 
2623
    g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));
 
2624
    g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));
 
2625
    g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);
 
2626
  } while(((queue->length) > 0)
 
2627
          and (not quit_now)
 
2628
          and ((currtime.tv_sec - starttime.tv_sec) < 10));
 
2629
 
 
2630
  g_assert_false(quit_now);
 
2631
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
2632
  g_assert_true(mandos_client_exited);
 
2633
 
 
2634
  g_assert_true(password_is_read);
 
2635
  g_assert_cmpint((int)password.length, ==,
 
2636
                  sizeof(helper_directory)-1);
 
2637
  g_assert_nonnull(password.data);
 
2638
  g_assert_cmpint(memcmp(helper_directory, password.data,
 
2639
                         sizeof(helper_directory)-1), ==, 0);
 
2640
}
 
2641
 
 
2642
__attribute__((nonnull, warn_unused_result))
 
2643
static bool proc_status_sigblk_to_sigset(const char *const,
 
2644
                                         sigset_t *const);
 
2645
 
 
2646
static void test_start_mandos_client_sigmask(test_fixture *fixture,
 
2647
                                             __attribute__((unused))
 
2648
                                             gconstpointer user_data){
 
2649
  bool mandos_client_exited = false;
 
2650
  bool quit_now = false;
 
2651
  __attribute__((cleanup(cleanup_close)))
 
2652
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
2653
  g_assert_cmpint(epoll_fd, >=, 0);
 
2654
  __attribute__((cleanup(cleanup_queue)))
 
2655
    task_queue *queue = create_queue();
 
2656
  g_assert_nonnull(queue);
 
2657
  __attribute__((cleanup(cleanup_buffer)))
 
2658
    buffer password = {};
 
2659
  bool password_is_read = false;
 
2660
  const char helper_directory[] = "/nonexistent";
 
2661
  /* see proc(5) for format of /proc/self/status */
 
2662
  const char *const argv[] = { "/usr/bin/awk",
 
2663
    "$1==\"SigBlk:\"{ print $2 }", "/proc/self/status", NULL };
 
2664
 
 
2665
  g_assert_true(start_mandos_client(queue, epoll_fd,
 
2666
                                    &mandos_client_exited, &quit_now,
 
2667
                                    &password, &password_is_read,
 
2668
                                    &fixture->orig_sigaction,
 
2669
                                    fixture->orig_sigmask,
 
2670
                                    helper_directory, 0, 0, argv));
 
2671
 
 
2672
  struct timespec starttime, currtime;
 
2673
  g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);
 
2674
  do {
 
2675
    queue->next_run = 0;
 
2676
    string_set cancelled_filenames = {};
 
2677
    g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));
 
2678
    g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));
 
2679
    g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);
 
2680
  } while((not (mandos_client_exited and password_is_read))
 
2681
          and (not quit_now)
 
2682
          and ((currtime.tv_sec - starttime.tv_sec) < 10));
 
2683
  g_assert_true(mandos_client_exited);
 
2684
  g_assert_true(password_is_read);
 
2685
 
 
2686
  sigset_t parsed_sigmask;
 
2687
  g_assert_true(proc_status_sigblk_to_sigset(password.data,
 
2688
                                             &parsed_sigmask));
 
2689
 
 
2690
  for(int signum = 1; signum < NSIG; signum++){
 
2691
    const bool has_signal = sigismember(&parsed_sigmask, signum);
 
2692
    if(sigismember(&fixture->orig_sigmask, signum)){
 
2693
      g_assert_true(has_signal);
 
2694
    } else {
 
2695
      g_assert_false(has_signal);
 
2696
    }
 
2697
  }
 
2698
}
 
2699
 
 
2700
__attribute__((nonnull, warn_unused_result))
 
2701
static bool proc_status_sigblk_to_sigset(const char *const sigblk,
 
2702
                                         sigset_t *const sigmask){
 
2703
  /* parse /proc/PID/status SigBlk value and convert to a sigset_t */
 
2704
  uintmax_t scanned_sigmask;
 
2705
  if(sscanf(sigblk, "%" SCNxMAX " ", &scanned_sigmask) != 1){
 
2706
    return false;
 
2707
  }
 
2708
  if(sigemptyset(sigmask) != 0){
 
2709
    return false;
 
2710
  }
 
2711
  for(int signum = 1; signum < NSIG; signum++){
 
2712
    if(scanned_sigmask & ((uintmax_t)1 << (signum-1))){
 
2713
      if(sigaddset(sigmask, signum) != 0){
 
2714
        return false;
 
2715
      }
 
2716
    }
 
2717
  }
 
2718
  return true;
 
2719
}
 
2720
 
 
2721
static void run_task_with_stderr_to_dev_null(const task_context task,
 
2722
                                             task_queue *const queue);
 
2723
 
 
2724
static
 
2725
void test_wait_for_mandos_client_exit_badpid(__attribute__((unused))
 
2726
                                             test_fixture *fixture,
 
2727
                                             __attribute__((unused))
 
2728
                                             gconstpointer user_data){
 
2729
 
 
2730
  bool mandos_client_exited = false;
 
2731
  bool quit_now = false;
 
2732
 
 
2733
  __attribute__((cleanup(cleanup_queue)))
 
2734
    task_queue *queue = create_queue();
 
2735
  g_assert_nonnull(queue);
 
2736
  const task_context task = {
 
2737
    .func=wait_for_mandos_client_exit,
 
2738
    .pid=1,
 
2739
    .mandos_client_exited=&mandos_client_exited,
 
2740
    .quit_now=&quit_now,
 
2741
  };
 
2742
  run_task_with_stderr_to_dev_null(task, queue);
 
2743
 
 
2744
  g_assert_false(mandos_client_exited);
 
2745
  g_assert_true(quit_now);
 
2746
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
2747
}
 
2748
 
 
2749
static void run_task_with_stderr_to_dev_null(const task_context task,
 
2750
                                             task_queue *const queue){
 
2751
  FILE *real_stderr = stderr;
 
2752
  FILE *devnull = fopen("/dev/null", "we");
 
2753
  g_assert_nonnull(devnull);
 
2754
 
 
2755
  stderr = devnull;
 
2756
  task.func(task, queue);
 
2757
  stderr = real_stderr;
 
2758
 
 
2759
  g_assert_cmpint(fclose(devnull), ==, 0);
 
2760
}
 
2761
 
 
2762
static
 
2763
void test_wait_for_mandos_client_exit_noexit(test_fixture *fixture,
 
2764
                                             __attribute__((unused))
 
2765
                                             gconstpointer user_data){
 
2766
  bool mandos_client_exited = false;
 
2767
  bool quit_now = false;
 
2768
 
 
2769
  pid_t create_eternal_process(void){
 
2770
    const pid_t pid = fork();
 
2771
    if(pid == 0){               /* Child */
 
2772
      if(not restore_signal_handler(&fixture->orig_sigaction)){
 
2773
        _exit(EXIT_FAILURE);
 
2774
      }
 
2775
      if(not restore_sigmask(&fixture->orig_sigmask)){
 
2776
        _exit(EXIT_FAILURE);
 
2777
      }
 
2778
      while(true){
 
2779
        pause();
 
2780
      }
 
2781
    }
 
2782
    return pid;
 
2783
  }
 
2784
  pid_t pid = create_eternal_process();
 
2785
  g_assert_true(pid != -1);
 
2786
 
 
2787
  __attribute__((cleanup(cleanup_queue)))
 
2788
    task_queue *queue = create_queue();
 
2789
  g_assert_nonnull(queue);
 
2790
  const task_context task = {
 
2791
    .func=wait_for_mandos_client_exit,
 
2792
    .pid=pid,
 
2793
    .mandos_client_exited=&mandos_client_exited,
 
2794
    .quit_now=&quit_now,
 
2795
  };
 
2796
  task.func(task, queue);
 
2797
 
 
2798
  g_assert_false(mandos_client_exited);
 
2799
  g_assert_false(quit_now);
 
2800
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
 
2801
 
 
2802
  g_assert_nonnull(find_matching_task(queue, (task_context){
 
2803
        .func=wait_for_mandos_client_exit,
 
2804
        .pid=task.pid,
 
2805
        .mandos_client_exited=&mandos_client_exited,
 
2806
        .quit_now=&quit_now,
 
2807
      }));
 
2808
}
 
2809
 
 
2810
static
 
2811
void test_wait_for_mandos_client_exit_success(test_fixture *fixture,
 
2812
                                              __attribute__((unused))
 
2813
                                              gconstpointer
 
2814
                                              user_data){
 
2815
  bool mandos_client_exited = false;
 
2816
  bool quit_now = false;
 
2817
 
 
2818
  pid_t create_successful_process(void){
 
2819
    const pid_t pid = fork();
 
2820
    if(pid == 0){               /* Child */
 
2821
      if(not restore_signal_handler(&fixture->orig_sigaction)){
 
2822
        _exit(EXIT_FAILURE);
 
2823
      }
 
2824
      if(not restore_sigmask(&fixture->orig_sigmask)){
 
2825
        _exit(EXIT_FAILURE);
 
2826
      }
 
2827
      exit(EXIT_SUCCESS);
 
2828
    }
 
2829
    return pid;
 
2830
  }
 
2831
  const pid_t pid = create_successful_process();
 
2832
  g_assert_true(pid != -1);
 
2833
 
 
2834
  __attribute__((cleanup(cleanup_queue)))
 
2835
    task_queue *queue = create_queue();
 
2836
  g_assert_nonnull(queue);
 
2837
  const task_context initial_task = {
 
2838
    .func=wait_for_mandos_client_exit,
 
2839
    .pid=pid,
 
2840
    .mandos_client_exited=&mandos_client_exited,
 
2841
    .quit_now=&quit_now,
 
2842
  };
 
2843
  g_assert_true(add_to_queue(queue, initial_task));
 
2844
 
 
2845
  struct timespec starttime, currtime;
 
2846
  g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);
 
2847
  __attribute__((cleanup(cleanup_close)))
 
2848
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
2849
  do {
 
2850
    queue->next_run = 0;
 
2851
    g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));
 
2852
    g_assert_true(run_queue(&queue, (string_set[]){{}}, &quit_now));
 
2853
    g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);
 
2854
  } while((not mandos_client_exited)
 
2855
          and (not quit_now)
 
2856
          and ((currtime.tv_sec - starttime.tv_sec) < 10));
 
2857
 
 
2858
  g_assert_true(mandos_client_exited);
 
2859
  g_assert_false(quit_now);
 
2860
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
2861
}
 
2862
 
 
2863
static
 
2864
void test_wait_for_mandos_client_exit_failure(test_fixture *fixture,
 
2865
                                              __attribute__((unused))
 
2866
                                              gconstpointer
 
2867
                                              user_data){
 
2868
  bool mandos_client_exited = false;
 
2869
  bool quit_now = false;
 
2870
 
 
2871
  pid_t create_failing_process(void){
 
2872
    const pid_t pid = fork();
 
2873
    if(pid == 0){               /* Child */
 
2874
      if(not restore_signal_handler(&fixture->orig_sigaction)){
 
2875
        _exit(EXIT_FAILURE);
 
2876
      }
 
2877
      if(not restore_sigmask(&fixture->orig_sigmask)){
 
2878
        _exit(EXIT_FAILURE);
 
2879
      }
 
2880
      exit(EXIT_FAILURE);
 
2881
    }
 
2882
    return pid;
 
2883
  }
 
2884
  const pid_t pid = create_failing_process();
 
2885
  g_assert_true(pid != -1);
 
2886
 
 
2887
  __attribute__((cleanup(string_set_clear)))
 
2888
    string_set cancelled_filenames = {};
 
2889
  __attribute__((cleanup(cleanup_close)))
 
2890
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
2891
  g_assert_cmpint(epoll_fd, >=, 0);
 
2892
  __attribute__((cleanup(cleanup_queue)))
 
2893
    task_queue *queue = create_queue();
 
2894
  g_assert_nonnull(queue);
 
2895
  g_assert_true(add_to_queue(queue, (task_context){
 
2896
        .func=wait_for_mandos_client_exit,
 
2897
        .pid=pid,
 
2898
        .mandos_client_exited=&mandos_client_exited,
 
2899
        .quit_now=&quit_now,
 
2900
      }));
 
2901
 
 
2902
  g_assert_true(sigismember(&fixture->orig_sigmask, SIGCHLD) == 0);
 
2903
 
 
2904
  __attribute__((cleanup(cleanup_close)))
 
2905
    const int devnull_fd = open("/dev/null",
 
2906
                                O_WRONLY | O_CLOEXEC);
 
2907
  g_assert_cmpint(devnull_fd, >=, 0);
 
2908
  __attribute__((cleanup(cleanup_close)))
 
2909
    const int real_stderr_fd = dup(STDERR_FILENO);
 
2910
  g_assert_cmpint(real_stderr_fd, >=, 0);
 
2911
 
 
2912
  struct timespec starttime, currtime;
 
2913
  g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);
 
2914
  do {
 
2915
    g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));
 
2916
    dup2(devnull_fd, STDERR_FILENO);
 
2917
    const bool success = run_queue(&queue, &cancelled_filenames,
 
2918
                                   &quit_now);
 
2919
    dup2(real_stderr_fd, STDERR_FILENO);
 
2920
    if(not success){
 
2921
      break;
 
2922
    }
 
2923
 
 
2924
    g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);
 
2925
  } while((not mandos_client_exited)
 
2926
          and (not quit_now)
 
2927
          and ((currtime.tv_sec - starttime.tv_sec) < 10));
 
2928
 
 
2929
  g_assert_true(quit_now);
 
2930
  g_assert_true(mandos_client_exited);
 
2931
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
2932
}
 
2933
 
 
2934
static
 
2935
void test_wait_for_mandos_client_exit_killed(test_fixture *fixture,
 
2936
                                             __attribute__((unused))
 
2937
                                             gconstpointer user_data){
 
2938
  bool mandos_client_exited = false;
 
2939
  bool quit_now = false;
 
2940
 
 
2941
  pid_t create_killed_process(void){
 
2942
    const pid_t pid = fork();
 
2943
    if(pid == 0){               /* Child */
 
2944
      if(not restore_signal_handler(&fixture->orig_sigaction)){
 
2945
        _exit(EXIT_FAILURE);
 
2946
      }
 
2947
      if(not restore_sigmask(&fixture->orig_sigmask)){
 
2948
        _exit(EXIT_FAILURE);
 
2949
      }
 
2950
      while(true){
 
2951
        pause();
 
2952
      }
 
2953
    }
 
2954
    kill(pid, SIGKILL);
 
2955
    return pid;
 
2956
  }
 
2957
  const pid_t pid = create_killed_process();
 
2958
  g_assert_true(pid != -1);
 
2959
 
 
2960
  __attribute__((cleanup(string_set_clear)))
 
2961
    string_set cancelled_filenames = {};
 
2962
  __attribute__((cleanup(cleanup_close)))
 
2963
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
2964
  g_assert_cmpint(epoll_fd, >=, 0);
 
2965
  __attribute__((cleanup(cleanup_queue)))
 
2966
    task_queue *queue = create_queue();
 
2967
  g_assert_nonnull(queue);
 
2968
  g_assert_true(add_to_queue(queue, (task_context){
 
2969
        .func=wait_for_mandos_client_exit,
 
2970
        .pid=pid,
 
2971
        .mandos_client_exited=&mandos_client_exited,
 
2972
        .quit_now=&quit_now,
 
2973
      }));
 
2974
 
 
2975
  __attribute__((cleanup(cleanup_close)))
 
2976
    const int devnull_fd = open("/dev/null",
 
2977
                                O_WRONLY | O_CLOEXEC);
 
2978
  g_assert_cmpint(devnull_fd, >=, 0);
 
2979
  __attribute__((cleanup(cleanup_close)))
 
2980
    const int real_stderr_fd = dup(STDERR_FILENO);
 
2981
  g_assert_cmpint(real_stderr_fd, >=, 0);
 
2982
 
 
2983
  struct timespec starttime, currtime;
 
2984
  g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);
 
2985
  do {
 
2986
    g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));
 
2987
    dup2(devnull_fd, STDERR_FILENO);
 
2988
    const bool success = run_queue(&queue, &cancelled_filenames,
 
2989
                                   &quit_now);
 
2990
    dup2(real_stderr_fd, STDERR_FILENO);
 
2991
    if(not success){
 
2992
      break;
 
2993
    }
 
2994
 
 
2995
    g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);
 
2996
  } while((not mandos_client_exited)
 
2997
          and (not quit_now)
 
2998
          and ((currtime.tv_sec - starttime.tv_sec) < 10));
 
2999
 
 
3000
  g_assert_true(mandos_client_exited);
 
3001
  g_assert_true(quit_now);
 
3002
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
3003
}
 
3004
 
 
3005
static bool epoll_set_does_not_contain(int, int);
 
3006
 
 
3007
static
 
3008
void test_read_mandos_client_output_readerror(__attribute__((unused))
 
3009
                                              test_fixture *fixture,
 
3010
                                              __attribute__((unused))
 
3011
                                              gconstpointer
 
3012
                                              user_data){
 
3013
  __attribute__((cleanup(cleanup_close)))
 
3014
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
3015
  g_assert_cmpint(epoll_fd, >=, 0);
 
3016
 
 
3017
  __attribute__((cleanup(cleanup_buffer)))
 
3018
    buffer password = {};
 
3019
 
 
3020
  /* Reading /proc/self/mem from offset 0 will always give EIO */
 
3021
  const int fd = open("/proc/self/mem", O_RDONLY | O_CLOEXEC);
 
3022
 
 
3023
  bool password_is_read = false;
 
3024
  bool quit_now = false;
 
3025
  __attribute__((cleanup(cleanup_queue)))
 
3026
    task_queue *queue = create_queue();
 
3027
  g_assert_nonnull(queue);
 
3028
 
 
3029
  task_context task = {
 
3030
    .func=read_mandos_client_output,
 
3031
    .epoll_fd=epoll_fd,
 
3032
    .fd=fd,
 
3033
    .password=&password,
 
3034
    .password_is_read=&password_is_read,
 
3035
    .quit_now=&quit_now,
 
3036
  };
 
3037
  run_task_with_stderr_to_dev_null(task, queue);
 
3038
  g_assert_false(password_is_read);
 
3039
  g_assert_cmpint((int)password.length, ==, 0);
 
3040
  g_assert_true(quit_now);
 
3041
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
3042
 
 
3043
  g_assert_true(epoll_set_does_not_contain(epoll_fd, fd));
 
3044
 
 
3045
  g_assert_cmpint(close(fd), ==, -1);
 
3046
}
 
3047
 
 
3048
static bool epoll_set_does_not_contain(int epoll_fd, int fd){
 
3049
  return not epoll_set_contains(epoll_fd, fd, 0);
 
3050
}
 
3051
 
 
3052
static
 
3053
void test_read_mandos_client_output_nodata(__attribute__((unused))
 
3054
                                           test_fixture *fixture,
 
3055
                                           __attribute__((unused))
 
3056
                                           gconstpointer user_data){
 
3057
  __attribute__((cleanup(cleanup_close)))
 
3058
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
3059
  g_assert_cmpint(epoll_fd, >=, 0);
 
3060
 
 
3061
  int pipefds[2];
 
3062
  g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);
 
3063
 
 
3064
  __attribute__((cleanup(cleanup_buffer)))
 
3065
    buffer password = {};
 
3066
 
 
3067
  bool password_is_read = false;
 
3068
  bool quit_now = false;
 
3069
  __attribute__((cleanup(cleanup_queue)))
 
3070
    task_queue *queue = create_queue();
 
3071
  g_assert_nonnull(queue);
 
3072
 
 
3073
  task_context task = {
 
3074
    .func=read_mandos_client_output,
 
3075
    .epoll_fd=epoll_fd,
 
3076
    .fd=pipefds[0],
 
3077
    .password=&password,
 
3078
    .password_is_read=&password_is_read,
 
3079
    .quit_now=&quit_now,
 
3080
  };
 
3081
  task.func(task, queue);
 
3082
  g_assert_false(password_is_read);
 
3083
  g_assert_cmpint((int)password.length, ==, 0);
 
3084
  g_assert_false(quit_now);
 
3085
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
 
3086
 
 
3087
  g_assert_nonnull(find_matching_task(queue, (task_context){
 
3088
        .func=read_mandos_client_output,
 
3089
        .epoll_fd=epoll_fd,
 
3090
        .fd=pipefds[0],
 
3091
        .password=&password,
 
3092
        .password_is_read=&password_is_read,
 
3093
        .quit_now=&quit_now,
 
3094
      }));
 
3095
 
 
3096
  g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],
 
3097
                                   EPOLLIN | EPOLLRDHUP));
 
3098
 
 
3099
  g_assert_cmpint(close(pipefds[1]), ==, 0);
 
3100
}
 
3101
 
 
3102
static void test_read_mandos_client_output_eof(__attribute__((unused))
 
3103
                                               test_fixture *fixture,
 
3104
                                               __attribute__((unused))
 
3105
                                               gconstpointer
 
3106
                                               user_data){
 
3107
  __attribute__((cleanup(cleanup_close)))
 
3108
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
3109
  g_assert_cmpint(epoll_fd, >=, 0);
 
3110
 
 
3111
  int pipefds[2];
 
3112
  g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);
 
3113
  g_assert_cmpint(close(pipefds[1]), ==, 0);
 
3114
 
 
3115
  __attribute__((cleanup(cleanup_buffer)))
 
3116
    buffer password = {};
 
3117
 
 
3118
  bool password_is_read = false;
 
3119
  bool quit_now = false;
 
3120
  __attribute__((cleanup(cleanup_queue)))
 
3121
    task_queue *queue = create_queue();
 
3122
  g_assert_nonnull(queue);
 
3123
 
 
3124
  task_context task = {
 
3125
    .func=read_mandos_client_output,
 
3126
    .epoll_fd=epoll_fd,
 
3127
    .fd=pipefds[0],
 
3128
    .password=&password,
 
3129
    .password_is_read=&password_is_read,
 
3130
    .quit_now=&quit_now,
 
3131
  };
 
3132
  task.func(task, queue);
 
3133
  g_assert_true(password_is_read);
 
3134
  g_assert_cmpint((int)password.length, ==, 0);
 
3135
  g_assert_false(quit_now);
 
3136
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
3137
 
 
3138
  g_assert_true(epoll_set_does_not_contain(epoll_fd, pipefds[0]));
 
3139
 
 
3140
  g_assert_cmpint(close(pipefds[0]), ==, -1);
 
3141
}
 
3142
 
 
3143
static
 
3144
void test_read_mandos_client_output_once(__attribute__((unused))
 
3145
                                         test_fixture *fixture,
 
3146
                                         __attribute__((unused))
 
3147
                                         gconstpointer user_data){
 
3148
  __attribute__((cleanup(cleanup_close)))
 
3149
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
3150
  g_assert_cmpint(epoll_fd, >=, 0);
 
3151
 
 
3152
  int pipefds[2];
 
3153
  g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);
 
3154
 
 
3155
  const char dummy_test_password[] = "dummy test password";
 
3156
  /* Start with a pre-allocated buffer */
 
3157
  __attribute__((cleanup(cleanup_buffer)))
 
3158
    buffer password = {
 
3159
    .data=malloc(sizeof(dummy_test_password)),
 
3160
    .length=0,
 
3161
    .allocated=sizeof(dummy_test_password),
 
3162
  };
 
3163
  g_assert_nonnull(password.data);
 
3164
  if(mlock(password.data, password.allocated) != 0){
 
3165
    g_assert_true(errno == EPERM or errno == ENOMEM);
 
3166
  }
 
3167
 
 
3168
  bool password_is_read = false;
 
3169
  bool quit_now = false;
 
3170
  __attribute__((cleanup(cleanup_queue)))
 
3171
    task_queue *queue = create_queue();
 
3172
  g_assert_nonnull(queue);
 
3173
 
 
3174
  g_assert_true(sizeof(dummy_test_password) <= PIPE_BUF);
 
3175
  g_assert_cmpint((int)write(pipefds[1], dummy_test_password,
 
3176
                             sizeof(dummy_test_password)),
 
3177
                  ==, (int)sizeof(dummy_test_password));
 
3178
 
 
3179
  task_context task = {
 
3180
    .func=read_mandos_client_output,
 
3181
    .epoll_fd=epoll_fd,
 
3182
    .fd=pipefds[0],
 
3183
    .password=&password,
 
3184
    .password_is_read=&password_is_read,
 
3185
    .quit_now=&quit_now,
 
3186
  };
 
3187
  task.func(task, queue);
 
3188
 
 
3189
  g_assert_false(password_is_read);
 
3190
  g_assert_cmpint((int)password.length, ==,
 
3191
                  (int)sizeof(dummy_test_password));
 
3192
  g_assert_nonnull(password.data);
 
3193
  g_assert_cmpint(memcmp(password.data, dummy_test_password,
 
3194
                         sizeof(dummy_test_password)), ==, 0);
 
3195
 
 
3196
  g_assert_false(quit_now);
 
3197
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
 
3198
 
 
3199
  g_assert_nonnull(find_matching_task(queue, (task_context){
 
3200
        .func=read_mandos_client_output,
 
3201
        .epoll_fd=epoll_fd,
 
3202
        .fd=pipefds[0],
 
3203
        .password=&password,
 
3204
        .password_is_read=&password_is_read,
 
3205
        .quit_now=&quit_now,
 
3206
      }));
 
3207
 
 
3208
  g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],
 
3209
                                   EPOLLIN | EPOLLRDHUP));
 
3210
 
 
3211
  g_assert_cmpint(close(pipefds[1]), ==, 0);
 
3212
}
 
3213
 
 
3214
static
 
3215
void test_read_mandos_client_output_malloc(__attribute__((unused))
 
3216
                                           test_fixture *fixture,
 
3217
                                           __attribute__((unused))
 
3218
                                           gconstpointer user_data){
 
3219
  __attribute__((cleanup(cleanup_close)))
 
3220
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
3221
  g_assert_cmpint(epoll_fd, >=, 0);
 
3222
 
 
3223
  int pipefds[2];
 
3224
  g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);
 
3225
 
 
3226
  const char dummy_test_password[] = "dummy test password";
 
3227
  /* Start with an empty buffer */
 
3228
  __attribute__((cleanup(cleanup_buffer)))
 
3229
    buffer password = {};
 
3230
 
 
3231
  bool password_is_read = false;
 
3232
  bool quit_now = false;
 
3233
  __attribute__((cleanup(cleanup_queue)))
 
3234
    task_queue *queue = create_queue();
 
3235
  g_assert_nonnull(queue);
 
3236
 
 
3237
  g_assert_true(sizeof(dummy_test_password) <= PIPE_BUF);
 
3238
  g_assert_cmpint((int)write(pipefds[1], dummy_test_password,
 
3239
                             sizeof(dummy_test_password)),
 
3240
                  ==, (int)sizeof(dummy_test_password));
 
3241
 
 
3242
  task_context task = {
 
3243
    .func=read_mandos_client_output,
 
3244
    .epoll_fd=epoll_fd,
 
3245
    .fd=pipefds[0],
 
3246
    .password=&password,
 
3247
    .password_is_read=&password_is_read,
 
3248
    .quit_now=&quit_now,
 
3249
  };
 
3250
  task.func(task, queue);
 
3251
 
 
3252
  g_assert_false(password_is_read);
 
3253
  g_assert_cmpint((int)password.length, ==,
 
3254
                  (int)sizeof(dummy_test_password));
 
3255
  g_assert_nonnull(password.data);
 
3256
  g_assert_cmpint(memcmp(password.data, dummy_test_password,
 
3257
                         sizeof(dummy_test_password)), ==, 0);
 
3258
 
 
3259
  g_assert_false(quit_now);
 
3260
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
 
3261
 
 
3262
  g_assert_nonnull(find_matching_task(queue, (task_context){
 
3263
        .func=read_mandos_client_output,
 
3264
        .epoll_fd=epoll_fd,
 
3265
        .fd=pipefds[0],
 
3266
        .password=&password,
 
3267
        .password_is_read=&password_is_read,
 
3268
        .quit_now=&quit_now,
 
3269
      }));
 
3270
 
 
3271
  g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],
 
3272
                                   EPOLLIN | EPOLLRDHUP));
 
3273
 
 
3274
  g_assert_cmpint(close(pipefds[1]), ==, 0);
 
3275
}
 
3276
 
 
3277
static
 
3278
void test_read_mandos_client_output_append(__attribute__((unused))
 
3279
                                           test_fixture *fixture,
 
3280
                                           __attribute__((unused))
 
3281
                                           gconstpointer user_data){
 
3282
  __attribute__((cleanup(cleanup_close)))
 
3283
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
3284
  g_assert_cmpint(epoll_fd, >=, 0);
 
3285
 
 
3286
  int pipefds[2];
 
3287
  g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);
 
3288
 
 
3289
  const char dummy_test_password[] = "dummy test password";
 
3290
  __attribute__((cleanup(cleanup_buffer)))
 
3291
    buffer password = {
 
3292
    .data=malloc(PIPE_BUF),
 
3293
    .length=PIPE_BUF,
 
3294
    .allocated=PIPE_BUF,
 
3295
  };
 
3296
  g_assert_nonnull(password.data);
 
3297
  if(mlock(password.data, password.allocated) != 0){
 
3298
    g_assert_true(errno == EPERM or errno == ENOMEM);
 
3299
  }
 
3300
 
 
3301
  memset(password.data, 'x', PIPE_BUF);
 
3302
  char password_expected[PIPE_BUF];
 
3303
  memcpy(password_expected, password.data, PIPE_BUF);
 
3304
 
 
3305
  bool password_is_read = false;
 
3306
  bool quit_now = false;
 
3307
  __attribute__((cleanup(cleanup_queue)))
 
3308
    task_queue *queue = create_queue();
 
3309
  g_assert_nonnull(queue);
 
3310
 
 
3311
  g_assert_true(sizeof(dummy_test_password) <= PIPE_BUF);
 
3312
  g_assert_cmpint((int)write(pipefds[1], dummy_test_password,
 
3313
                             sizeof(dummy_test_password)),
 
3314
                  ==, (int)sizeof(dummy_test_password));
 
3315
 
 
3316
  task_context task = {
 
3317
    .func=read_mandos_client_output,
 
3318
    .epoll_fd=epoll_fd,
 
3319
    .fd=pipefds[0],
 
3320
    .password=&password,
 
3321
    .password_is_read=&password_is_read,
 
3322
    .quit_now=&quit_now,
 
3323
  };
 
3324
  task.func(task, queue);
 
3325
 
 
3326
  g_assert_false(password_is_read);
 
3327
  g_assert_cmpint((int)password.length, ==,
 
3328
                  PIPE_BUF + sizeof(dummy_test_password));
 
3329
  g_assert_nonnull(password.data);
 
3330
  g_assert_cmpint(memcmp(password_expected, password.data, PIPE_BUF),
 
3331
                  ==, 0);
 
3332
  g_assert_cmpint(memcmp(password.data + PIPE_BUF,
 
3333
                         dummy_test_password,
 
3334
                         sizeof(dummy_test_password)), ==, 0);
 
3335
  g_assert_false(quit_now);
 
3336
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
 
3337
 
 
3338
  g_assert_nonnull(find_matching_task(queue, (task_context){
 
3339
        .func=read_mandos_client_output,
 
3340
        .epoll_fd=epoll_fd,
 
3341
        .fd=pipefds[0],
 
3342
        .password=&password,
 
3343
        .password_is_read=&password_is_read,
 
3344
        .quit_now=&quit_now,
 
3345
      }));
 
3346
 
 
3347
  g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],
 
3348
                                   EPOLLIN | EPOLLRDHUP));
 
3349
}
 
3350
 
 
3351
static char *make_temporary_directory(void);
 
3352
 
 
3353
static void test_add_inotify_dir_watch(__attribute__((unused))
 
3354
                                       test_fixture *fixture,
 
3355
                                       __attribute__((unused))
 
3356
                                       gconstpointer user_data){
 
3357
  __attribute__((cleanup(cleanup_close)))
 
3358
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
3359
  g_assert_cmpint(epoll_fd, >=, 0);
 
3360
  __attribute__((cleanup(cleanup_queue)))
 
3361
    task_queue *queue = create_queue();
 
3362
  g_assert_nonnull(queue);
 
3363
  __attribute__((cleanup(string_set_clear)))
 
3364
    string_set cancelled_filenames = {};
 
3365
  const mono_microsecs current_time = 0;
 
3366
 
 
3367
  bool quit_now = false;
 
3368
  buffer password = {};
 
3369
  bool mandos_client_exited = false;
 
3370
  bool password_is_read = false;
 
3371
 
 
3372
  __attribute__((cleanup(cleanup_string)))
 
3373
    char *tempdir = make_temporary_directory();
 
3374
  g_assert_nonnull(tempdir);
 
3375
 
 
3376
  g_assert_true(add_inotify_dir_watch(queue, epoll_fd, &quit_now,
 
3377
                                      &password, tempdir,
 
3378
                                      &cancelled_filenames,
 
3379
                                      &current_time,
 
3380
                                      &mandos_client_exited,
 
3381
                                      &password_is_read));
 
3382
 
 
3383
  g_assert_cmpuint((unsigned int)queue->length, >, 0);
 
3384
 
 
3385
  const task_context *const added_read_task
 
3386
    = find_matching_task(queue, (task_context){
 
3387
        .func=read_inotify_event,
 
3388
        .epoll_fd=epoll_fd,
 
3389
        .quit_now=&quit_now,
 
3390
        .password=&password,
 
3391
        .filename=tempdir,
 
3392
        .cancelled_filenames=&cancelled_filenames,
 
3393
        .current_time=&current_time,
 
3394
        .mandos_client_exited=&mandos_client_exited,
 
3395
        .password_is_read=&password_is_read,
 
3396
      });
 
3397
  g_assert_nonnull(added_read_task);
 
3398
 
 
3399
  g_assert_cmpint(added_read_task->fd, >, 2);
 
3400
  g_assert_true(fd_has_cloexec_and_nonblock(added_read_task->fd));
 
3401
  g_assert_true(epoll_set_contains(added_read_task->epoll_fd,
 
3402
                                   added_read_task->fd,
 
3403
                                   EPOLLIN | EPOLLRDHUP));
 
3404
 
 
3405
  g_assert_cmpint(rmdir(tempdir), ==, 0);
 
3406
}
 
3407
 
 
3408
static char *make_temporary_directory(void){
 
3409
  char *name = strdup("/tmp/mandosXXXXXX");
 
3410
  g_assert_nonnull(name);
 
3411
  char *result = mkdtemp(name);
 
3412
  if(result == NULL){
 
3413
    free(name);
 
3414
  }
 
3415
  return result;
 
3416
}
 
3417
 
 
3418
static void test_add_inotify_dir_watch_fail(__attribute__((unused))
 
3419
                                            test_fixture *fixture,
 
3420
                                            __attribute__((unused))
 
3421
                                            gconstpointer user_data){
 
3422
  __attribute__((cleanup(cleanup_close)))
 
3423
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
3424
  g_assert_cmpint(epoll_fd, >=, 0);
 
3425
  __attribute__((cleanup(cleanup_queue)))
 
3426
    task_queue *queue = create_queue();
 
3427
  g_assert_nonnull(queue);
 
3428
  __attribute__((cleanup(string_set_clear)))
 
3429
    string_set cancelled_filenames = {};
 
3430
  const mono_microsecs current_time = 0;
 
3431
 
 
3432
  bool quit_now = false;
 
3433
  buffer password = {};
 
3434
  bool mandos_client_exited = false;
 
3435
  bool password_is_read = false;
 
3436
 
 
3437
  const char nonexistent_dir[] = "/nonexistent";
 
3438
 
 
3439
  FILE *real_stderr = stderr;
 
3440
  FILE *devnull = fopen("/dev/null", "we");
 
3441
  g_assert_nonnull(devnull);
 
3442
  stderr = devnull;
 
3443
  g_assert_false(add_inotify_dir_watch(queue, epoll_fd, &quit_now,
 
3444
                                       &password, nonexistent_dir,
 
3445
                                       &cancelled_filenames,
 
3446
                                       &current_time,
 
3447
                                       &mandos_client_exited,
 
3448
                                       &password_is_read));
 
3449
  stderr = real_stderr;
 
3450
  g_assert_cmpint(fclose(devnull), ==, 0);
 
3451
 
 
3452
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
3453
}
 
3454
 
 
3455
static void test_add_inotify_dir_watch_EAGAIN(__attribute__((unused))
 
3456
                                              test_fixture *fixture,
 
3457
                                              __attribute__((unused))
 
3458
                                              gconstpointer
 
3459
                                              user_data){
 
3460
  __attribute__((cleanup(cleanup_close)))
 
3461
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
3462
  g_assert_cmpint(epoll_fd, >=, 0);
 
3463
  __attribute__((cleanup(cleanup_queue)))
 
3464
    task_queue *queue = create_queue();
 
3465
  g_assert_nonnull(queue);
 
3466
  __attribute__((cleanup(string_set_clear)))
 
3467
    string_set cancelled_filenames = {};
 
3468
  const mono_microsecs current_time = 0;
 
3469
 
 
3470
  bool quit_now = false;
 
3471
  buffer password = {};
 
3472
  bool mandos_client_exited = false;
 
3473
  bool password_is_read = false;
 
3474
 
 
3475
  __attribute__((cleanup(cleanup_string)))
 
3476
    char *tempdir = make_temporary_directory();
 
3477
  g_assert_nonnull(tempdir);
 
3478
 
 
3479
  g_assert_true(add_inotify_dir_watch(queue, epoll_fd, &quit_now,
 
3480
                                      &password, tempdir,
 
3481
                                      &cancelled_filenames,
 
3482
                                      &current_time,
 
3483
                                      &mandos_client_exited,
 
3484
                                      &password_is_read));
 
3485
 
 
3486
  g_assert_cmpuint((unsigned int)queue->length, >, 0);
 
3487
 
 
3488
  const task_context *const added_read_task
 
3489
    = find_matching_task(queue,
 
3490
                         (task_context){ .func=read_inotify_event });
 
3491
  g_assert_nonnull(added_read_task);
 
3492
 
 
3493
  g_assert_cmpint(added_read_task->fd, >, 2);
 
3494
  g_assert_true(fd_has_cloexec_and_nonblock(added_read_task->fd));
 
3495
 
 
3496
  /* "sufficient to read at least one event." - inotify(7) */
 
3497
  const size_t ievent_size = (sizeof(struct inotify_event)
 
3498
                              + NAME_MAX + 1);
 
3499
  struct inotify_event *ievent = malloc(ievent_size);
 
3500
  g_assert_nonnull(ievent);
 
3501
 
 
3502
  g_assert_cmpint(read(added_read_task->fd, ievent, ievent_size), ==,
 
3503
                  -1);
 
3504
  g_assert_cmpint(errno, ==, EAGAIN);
 
3505
 
 
3506
  free(ievent);
 
3507
 
 
3508
  g_assert_cmpint(rmdir(tempdir), ==, 0);
 
3509
}
 
3510
 
 
3511
static char *make_temporary_file_in_directory(const char
 
3512
                                              *const dir);
 
3513
 
 
3514
static
 
3515
void test_add_inotify_dir_watch_IN_CLOSE_WRITE(__attribute__((unused))
 
3516
                                               test_fixture *fixture,
 
3517
                                               __attribute__((unused))
 
3518
                                               gconstpointer
 
3519
                                               user_data){
 
3520
  __attribute__((cleanup(cleanup_close)))
 
3521
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
3522
  g_assert_cmpint(epoll_fd, >=, 0);
 
3523
  __attribute__((cleanup(cleanup_queue)))
 
3524
    task_queue *queue = create_queue();
 
3525
  g_assert_nonnull(queue);
 
3526
  __attribute__((cleanup(string_set_clear)))
 
3527
    string_set cancelled_filenames = {};
 
3528
  const mono_microsecs current_time = 0;
 
3529
 
 
3530
  bool quit_now = false;
 
3531
  buffer password = {};
 
3532
  bool mandos_client_exited = false;
 
3533
  bool password_is_read = false;
 
3534
 
 
3535
  __attribute__((cleanup(cleanup_string)))
 
3536
    char *tempdir = make_temporary_directory();
 
3537
  g_assert_nonnull(tempdir);
 
3538
 
 
3539
  g_assert_true(add_inotify_dir_watch(queue, epoll_fd, &quit_now,
 
3540
                                      &password, tempdir,
 
3541
                                      &cancelled_filenames,
 
3542
                                      &current_time,
 
3543
                                      &mandos_client_exited,
 
3544
                                      &password_is_read));
 
3545
 
 
3546
  g_assert_cmpuint((unsigned int)queue->length, >, 0);
 
3547
 
 
3548
  const task_context *const added_read_task
 
3549
    = find_matching_task(queue,
 
3550
                         (task_context){ .func=read_inotify_event });
 
3551
  g_assert_nonnull(added_read_task);
 
3552
 
 
3553
  g_assert_cmpint(added_read_task->fd, >, 2);
 
3554
  g_assert_true(fd_has_cloexec_and_nonblock(added_read_task->fd));
 
3555
 
 
3556
  __attribute__((cleanup(cleanup_string)))
 
3557
    char *filename = make_temporary_file_in_directory(tempdir);
 
3558
  g_assert_nonnull(filename);
 
3559
 
 
3560
  /* "sufficient to read at least one event." - inotify(7) */
 
3561
  const size_t ievent_size = (sizeof(struct inotify_event)
 
3562
                              + NAME_MAX + 1);
 
3563
  struct inotify_event *ievent = malloc(ievent_size);
 
3564
  g_assert_nonnull(ievent);
 
3565
 
 
3566
  ssize_t read_size = 0;
 
3567
  read_size = read(added_read_task->fd, ievent, ievent_size);
 
3568
 
 
3569
  g_assert_cmpint((int)read_size, >, 0);
 
3570
  g_assert_true(ievent->mask & IN_CLOSE_WRITE);
 
3571
  g_assert_cmpstr(ievent->name, ==, basename(filename));
 
3572
 
 
3573
  free(ievent);
 
3574
 
 
3575
  g_assert_cmpint(unlink(filename), ==, 0);
 
3576
  g_assert_cmpint(rmdir(tempdir), ==, 0);
 
3577
}
 
3578
 
 
3579
static char *make_temporary_prefixed_file_in_directory(const char
 
3580
                                                       *const prefix,
 
3581
                                                       const char
 
3582
                                                       *const dir){
 
3583
  char *filename = NULL;
 
3584
  g_assert_cmpint(asprintf(&filename, "%s/%sXXXXXX", dir, prefix),
 
3585
                  >, 0);
 
3586
  g_assert_nonnull(filename);
 
3587
  const int fd = mkostemp(filename, O_CLOEXEC);
 
3588
  g_assert_cmpint(fd, >=, 0);
 
3589
  g_assert_cmpint(close(fd), ==, 0);
 
3590
  return filename;
 
3591
}
 
3592
 
 
3593
static char *make_temporary_file_in_directory(const char
 
3594
                                              *const dir){
 
3595
  return make_temporary_prefixed_file_in_directory("temp", dir);
 
3596
}
 
3597
 
 
3598
static
 
3599
void test_add_inotify_dir_watch_IN_MOVED_TO(__attribute__((unused))
 
3600
                                            test_fixture *fixture,
 
3601
                                            __attribute__((unused))
 
3602
                                            gconstpointer user_data){
 
3603
  __attribute__((cleanup(cleanup_close)))
 
3604
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
3605
  g_assert_cmpint(epoll_fd, >=, 0);
 
3606
  __attribute__((cleanup(cleanup_queue)))
 
3607
    task_queue *queue = create_queue();
 
3608
  g_assert_nonnull(queue);
 
3609
  __attribute__((cleanup(string_set_clear)))
 
3610
    string_set cancelled_filenames = {};
 
3611
  const mono_microsecs current_time = 0;
 
3612
 
 
3613
  bool quit_now = false;
 
3614
  buffer password = {};
 
3615
  bool mandos_client_exited = false;
 
3616
  bool password_is_read = false;
 
3617
 
 
3618
  __attribute__((cleanup(cleanup_string)))
 
3619
    char *watchdir = make_temporary_directory();
 
3620
  g_assert_nonnull(watchdir);
 
3621
 
 
3622
  g_assert_true(add_inotify_dir_watch(queue, epoll_fd, &quit_now,
 
3623
                                      &password, watchdir,
 
3624
                                      &cancelled_filenames,
 
3625
                                      &current_time,
 
3626
                                      &mandos_client_exited,
 
3627
                                      &password_is_read));
 
3628
 
 
3629
  g_assert_cmpuint((unsigned int)queue->length, >, 0);
 
3630
 
 
3631
  const task_context *const added_read_task
 
3632
    = find_matching_task(queue,
 
3633
                         (task_context){ .func=read_inotify_event });
 
3634
  g_assert_nonnull(added_read_task);
 
3635
 
 
3636
  g_assert_cmpint(added_read_task->fd, >, 2);
 
3637
  g_assert_true(fd_has_cloexec_and_nonblock(added_read_task->fd));
 
3638
 
 
3639
  char *sourcedir = make_temporary_directory();
 
3640
  g_assert_nonnull(sourcedir);
 
3641
 
 
3642
  __attribute__((cleanup(cleanup_string)))
 
3643
    char *filename = make_temporary_file_in_directory(sourcedir);
 
3644
  g_assert_nonnull(filename);
 
3645
 
 
3646
  __attribute__((cleanup(cleanup_string)))
 
3647
    char *targetfilename = NULL;
 
3648
  g_assert_cmpint(asprintf(&targetfilename, "%s/%s", watchdir,
 
3649
                           basename(filename)), >, 0);
 
3650
  g_assert_nonnull(targetfilename);
 
3651
 
 
3652
  g_assert_cmpint(rename(filename, targetfilename), ==, 0);
 
3653
  g_assert_cmpint(rmdir(sourcedir), ==, 0);
 
3654
  free(sourcedir);
 
3655
 
 
3656
  /* "sufficient to read at least one event." - inotify(7) */
 
3657
  const size_t ievent_size = (sizeof(struct inotify_event)
 
3658
                              + NAME_MAX + 1);
 
3659
  struct inotify_event *ievent = malloc(ievent_size);
 
3660
  g_assert_nonnull(ievent);
 
3661
 
 
3662
  ssize_t read_size = read(added_read_task->fd, ievent, ievent_size);
 
3663
 
 
3664
  g_assert_cmpint((int)read_size, >, 0);
 
3665
  g_assert_true(ievent->mask & IN_MOVED_TO);
 
3666
  g_assert_cmpstr(ievent->name, ==, basename(targetfilename));
 
3667
 
 
3668
  free(ievent);
 
3669
 
 
3670
  g_assert_cmpint(unlink(targetfilename), ==, 0);
 
3671
  g_assert_cmpint(rmdir(watchdir), ==, 0);
 
3672
}
 
3673
 
 
3674
static
 
3675
void test_add_inotify_dir_watch_IN_DELETE(__attribute__((unused))
 
3676
                                          test_fixture *fixture,
 
3677
                                          __attribute__((unused))
 
3678
                                          gconstpointer user_data){
 
3679
  __attribute__((cleanup(cleanup_close)))
 
3680
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
3681
  g_assert_cmpint(epoll_fd, >=, 0);
 
3682
  __attribute__((cleanup(cleanup_queue)))
 
3683
    task_queue *queue = create_queue();
 
3684
  g_assert_nonnull(queue);
 
3685
  __attribute__((cleanup(string_set_clear)))
 
3686
    string_set cancelled_filenames = {};
 
3687
  const mono_microsecs current_time = 0;
 
3688
 
 
3689
  bool quit_now = false;
 
3690
  buffer password = {};
 
3691
  bool mandos_client_exited = false;
 
3692
  bool password_is_read = false;
 
3693
 
 
3694
  __attribute__((cleanup(cleanup_string)))
 
3695
    char *tempdir = make_temporary_directory();
 
3696
  g_assert_nonnull(tempdir);
 
3697
 
 
3698
  __attribute__((cleanup(cleanup_string)))
 
3699
    char *tempfile = make_temporary_file_in_directory(tempdir);
 
3700
  g_assert_nonnull(tempfile);
 
3701
 
 
3702
  g_assert_true(add_inotify_dir_watch(queue, epoll_fd, &quit_now,
 
3703
                                      &password, tempdir,
 
3704
                                      &cancelled_filenames,
 
3705
                                      &current_time,
 
3706
                                      &mandos_client_exited,
 
3707
                                      &password_is_read));
 
3708
  g_assert_cmpint(unlink(tempfile), ==, 0);
 
3709
 
 
3710
  g_assert_cmpuint((unsigned int)queue->length, >, 0);
 
3711
 
 
3712
  const task_context *const added_read_task
 
3713
    = find_matching_task(queue,
 
3714
                         (task_context){ .func=read_inotify_event });
 
3715
  g_assert_nonnull(added_read_task);
 
3716
 
 
3717
  g_assert_cmpint(added_read_task->fd, >, 2);
 
3718
  g_assert_true(fd_has_cloexec_and_nonblock(added_read_task->fd));
 
3719
 
 
3720
  /* "sufficient to read at least one event." - inotify(7) */
 
3721
  const size_t ievent_size = (sizeof(struct inotify_event)
 
3722
                              + NAME_MAX + 1);
 
3723
  struct inotify_event *ievent = malloc(ievent_size);
 
3724
  g_assert_nonnull(ievent);
 
3725
 
 
3726
  ssize_t read_size = 0;
 
3727
  read_size = read(added_read_task->fd, ievent, ievent_size);
 
3728
 
 
3729
  g_assert_cmpint((int)read_size, >, 0);
 
3730
  g_assert_true(ievent->mask & IN_DELETE);
 
3731
  g_assert_cmpstr(ievent->name, ==, basename(tempfile));
 
3732
 
 
3733
  free(ievent);
 
3734
 
 
3735
  g_assert_cmpint(rmdir(tempdir), ==, 0);
 
3736
}
 
3737
 
 
3738
static void test_read_inotify_event_readerror(__attribute__((unused))
 
3739
                                              test_fixture *fixture,
 
3740
                                              __attribute__((unused))
 
3741
                                              gconstpointer
 
3742
                                              user_data){
 
3743
  __attribute__((cleanup(cleanup_close)))
 
3744
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
3745
  g_assert_cmpint(epoll_fd, >=, 0);
 
3746
  const mono_microsecs current_time = 0;
 
3747
 
 
3748
  /* Reading /proc/self/mem from offset 0 will always result in EIO */
 
3749
  const int fd = open("/proc/self/mem", O_RDONLY | O_CLOEXEC);
 
3750
 
 
3751
  bool quit_now = false;
 
3752
  __attribute__((cleanup(cleanup_queue)))
 
3753
    task_queue *queue = create_queue();
 
3754
  g_assert_nonnull(queue);
 
3755
 
 
3756
  task_context task = {
 
3757
    .func=read_inotify_event,
 
3758
    .epoll_fd=epoll_fd,
 
3759
    .fd=fd,
 
3760
    .quit_now=&quit_now,
 
3761
    .filename=strdup("/nonexistent"),
 
3762
    .cancelled_filenames = &(string_set){},
 
3763
    .notafter=0,
 
3764
    .current_time=&current_time,
 
3765
  };
 
3766
  g_assert_nonnull(task.filename);
 
3767
  run_task_with_stderr_to_dev_null(task, queue);
 
3768
  g_assert_true(quit_now);
 
3769
  g_assert_true(queue->next_run == 0);
 
3770
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
3771
 
 
3772
  g_assert_true(epoll_set_does_not_contain(epoll_fd, fd));
 
3773
 
 
3774
  g_assert_cmpint(close(fd), ==, -1);
 
3775
}
 
3776
 
 
3777
static void test_read_inotify_event_bad_epoll(__attribute__((unused))
 
3778
                                              test_fixture *fixture,
 
3779
                                              __attribute__((unused))
 
3780
                                              gconstpointer
 
3781
                                              user_data){
 
3782
  const mono_microsecs current_time = 17;
 
3783
 
 
3784
  int pipefds[2];
 
3785
  g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);
 
3786
  const int epoll_fd = pipefds[0]; /* This will obviously fail */
 
3787
 
 
3788
  bool quit_now = false;
 
3789
  buffer password = {};
 
3790
  bool mandos_client_exited = false;
 
3791
  bool password_is_read = false;
 
3792
  __attribute__((cleanup(cleanup_queue)))
 
3793
    task_queue *queue = create_queue();
 
3794
  g_assert_nonnull(queue);
 
3795
 
 
3796
  task_context task = {
 
3797
    .func=read_inotify_event,
 
3798
    .epoll_fd=epoll_fd,
 
3799
    .fd=pipefds[0],
 
3800
    .quit_now=&quit_now,
 
3801
    .password=&password,
 
3802
    .filename=strdup("/nonexistent"),
 
3803
    .cancelled_filenames = &(string_set){},
 
3804
    .notafter=0,
 
3805
    .current_time=&current_time,
 
3806
    .mandos_client_exited=&mandos_client_exited,
 
3807
    .password_is_read=&password_is_read,
 
3808
  };
 
3809
  g_assert_nonnull(task.filename);
 
3810
  run_task_with_stderr_to_dev_null(task, queue);
 
3811
 
 
3812
  g_assert_nonnull(find_matching_task(queue, task));
 
3813
  g_assert_true(queue->next_run == 1000000 + current_time);
 
3814
 
 
3815
  g_assert_cmpint(close(pipefds[0]), ==, 0);
 
3816
  g_assert_cmpint(close(pipefds[1]), ==, 0);
 
3817
}
 
3818
 
 
3819
static void test_read_inotify_event_nodata(__attribute__((unused))
 
3820
                                           test_fixture *fixture,
 
3821
                                           __attribute__((unused))
 
3822
                                           gconstpointer user_data){
 
3823
  __attribute__((cleanup(cleanup_close)))
 
3824
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
3825
  g_assert_cmpint(epoll_fd, >=, 0);
 
3826
  const mono_microsecs current_time = 0;
 
3827
 
 
3828
  int pipefds[2];
 
3829
  g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);
 
3830
 
 
3831
  bool quit_now = false;
 
3832
  buffer password = {};
 
3833
  bool mandos_client_exited = false;
 
3834
  bool password_is_read = false;
 
3835
  __attribute__((cleanup(cleanup_queue)))
 
3836
    task_queue *queue = create_queue();
 
3837
  g_assert_nonnull(queue);
 
3838
 
 
3839
  task_context task = {
 
3840
    .func=read_inotify_event,
 
3841
    .epoll_fd=epoll_fd,
 
3842
    .fd=pipefds[0],
 
3843
    .quit_now=&quit_now,
 
3844
    .password=&password,
 
3845
    .filename=strdup("/nonexistent"),
 
3846
    .cancelled_filenames = &(string_set){},
 
3847
    .notafter=0,
 
3848
    .current_time=&current_time,
 
3849
    .mandos_client_exited=&mandos_client_exited,
 
3850
    .password_is_read=&password_is_read,
 
3851
  };
 
3852
  g_assert_nonnull(task.filename);
 
3853
  task.func(task, queue);
 
3854
  g_assert_false(quit_now);
 
3855
  g_assert_true(queue->next_run == 0);
 
3856
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
 
3857
 
 
3858
  g_assert_nonnull(find_matching_task(queue, (task_context){
 
3859
        .func=read_inotify_event,
 
3860
        .epoll_fd=epoll_fd,
 
3861
        .fd=pipefds[0],
 
3862
        .quit_now=&quit_now,
 
3863
        .password=&password,
 
3864
        .filename=task.filename,
 
3865
        .cancelled_filenames=task.cancelled_filenames,
 
3866
        .current_time=&current_time,
 
3867
        .mandos_client_exited=&mandos_client_exited,
 
3868
        .password_is_read=&password_is_read,
 
3869
      }));
 
3870
 
 
3871
  g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],
 
3872
                                   EPOLLIN | EPOLLRDHUP));
 
3873
 
 
3874
  g_assert_cmpint(close(pipefds[1]), ==, 0);
 
3875
}
 
3876
 
 
3877
static void test_read_inotify_event_eof(__attribute__((unused))
 
3878
                                        test_fixture *fixture,
 
3879
                                        __attribute__((unused))
 
3880
                                        gconstpointer user_data){
 
3881
  __attribute__((cleanup(cleanup_close)))
 
3882
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
3883
  g_assert_cmpint(epoll_fd, >=, 0);
 
3884
  const mono_microsecs current_time = 0;
 
3885
 
 
3886
  int pipefds[2];
 
3887
  g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);
 
3888
  g_assert_cmpint(close(pipefds[1]), ==, 0);
 
3889
 
 
3890
  bool quit_now = false;
 
3891
  buffer password = {};
 
3892
  __attribute__((cleanup(cleanup_queue)))
 
3893
    task_queue *queue = create_queue();
 
3894
  g_assert_nonnull(queue);
 
3895
 
 
3896
  task_context task = {
 
3897
    .func=read_inotify_event,
 
3898
    .epoll_fd=epoll_fd,
 
3899
    .fd=pipefds[0],
 
3900
    .quit_now=&quit_now,
 
3901
    .password=&password,
 
3902
    .filename=strdup("/nonexistent"),
 
3903
    .cancelled_filenames = &(string_set){},
 
3904
    .notafter=0,
 
3905
    .current_time=&current_time,
 
3906
  };
 
3907
  run_task_with_stderr_to_dev_null(task, queue);
 
3908
  g_assert_true(quit_now);
 
3909
  g_assert_true(queue->next_run == 0);
 
3910
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
3911
 
 
3912
  g_assert_true(epoll_set_does_not_contain(epoll_fd, pipefds[0]));
 
3913
 
 
3914
  g_assert_cmpint(close(pipefds[0]), ==, -1);
 
3915
}
 
3916
 
 
3917
static
 
3918
void test_read_inotify_event_IN_CLOSE_WRITE(__attribute__((unused))
 
3919
                                            test_fixture *fixture,
 
3920
                                            __attribute__((unused))
 
3921
                                            gconstpointer user_data){
 
3922
  __attribute__((cleanup(cleanup_close)))
 
3923
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
3924
  g_assert_cmpint(epoll_fd, >=, 0);
 
3925
  const mono_microsecs current_time = 0;
 
3926
 
 
3927
  int pipefds[2];
 
3928
  g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);
 
3929
 
 
3930
  /* "sufficient to read at least one event." - inotify(7) */
 
3931
  const size_t ievent_max_size = (sizeof(struct inotify_event)
 
3932
                                  + NAME_MAX + 1);
 
3933
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
 
3934
  struct {
 
3935
    struct inotify_event event;
 
3936
    char name_buffer[NAME_MAX + 1];
 
3937
  } ievent_buffer;
 
3938
  struct inotify_event *const ievent = &ievent_buffer.event;
 
3939
 
 
3940
  const char dummy_file_name[] = "ask.dummy_file_name";
 
3941
  ievent->mask = IN_CLOSE_WRITE;
 
3942
  ievent->len = sizeof(dummy_file_name);
 
3943
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
 
3944
  const size_t ievent_size = (sizeof(struct inotify_event)
 
3945
                              + sizeof(dummy_file_name));
 
3946
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
 
3947
                  ==, ievent_size);
 
3948
  g_assert_cmpint(close(pipefds[1]), ==, 0);
 
3949
 
 
3950
  bool quit_now = false;
 
3951
  buffer password = {};
 
3952
  bool mandos_client_exited = false;
 
3953
  bool password_is_read = false;
 
3954
  __attribute__((cleanup(cleanup_queue)))
 
3955
    task_queue *queue = create_queue();
 
3956
  g_assert_nonnull(queue);
 
3957
 
 
3958
  task_context task = {
 
3959
    .func=read_inotify_event,
 
3960
    .epoll_fd=epoll_fd,
 
3961
    .fd=pipefds[0],
 
3962
    .quit_now=&quit_now,
 
3963
    .password=&password,
 
3964
    .filename=strdup("/nonexistent"),
 
3965
    .cancelled_filenames = &(string_set){},
 
3966
    .notafter=0,
 
3967
    .current_time=&current_time,
 
3968
    .mandos_client_exited=&mandos_client_exited,
 
3969
    .password_is_read=&password_is_read,
 
3970
  };
 
3971
  task.func(task, queue);
 
3972
  g_assert_false(quit_now);
 
3973
  g_assert_true(queue->next_run != 0);
 
3974
  g_assert_cmpuint((unsigned int)queue->length, >=, 1);
 
3975
 
 
3976
  g_assert_nonnull(find_matching_task(queue, (task_context){
 
3977
        .func=read_inotify_event,
 
3978
        .epoll_fd=epoll_fd,
 
3979
        .fd=pipefds[0],
 
3980
        .quit_now=&quit_now,
 
3981
        .password=&password,
 
3982
        .filename=task.filename,
 
3983
        .cancelled_filenames=task.cancelled_filenames,
 
3984
        .current_time=&current_time,
 
3985
        .mandos_client_exited=&mandos_client_exited,
 
3986
        .password_is_read=&password_is_read,
 
3987
      }));
 
3988
 
 
3989
  g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],
 
3990
                                   EPOLLIN | EPOLLRDHUP));
 
3991
 
 
3992
  g_assert_cmpuint((unsigned int)queue->length, >=, 2);
 
3993
 
 
3994
  __attribute__((cleanup(cleanup_string)))
 
3995
    char *filename = NULL;
 
3996
  g_assert_cmpint(asprintf(&filename, "%s/%s", task.filename,
 
3997
                           dummy_file_name), >, 0);
 
3998
  g_assert_nonnull(filename);
 
3999
  g_assert_nonnull(find_matching_task(queue, (task_context){
 
4000
        .func=open_and_parse_question,
 
4001
        .epoll_fd=epoll_fd,
 
4002
        .filename=filename,
 
4003
        .question_filename=filename,
 
4004
        .password=&password,
 
4005
        .cancelled_filenames=task.cancelled_filenames,
 
4006
        .current_time=&current_time,
 
4007
        .mandos_client_exited=&mandos_client_exited,
 
4008
        .password_is_read=&password_is_read,
 
4009
      }));
 
4010
}
 
4011
 
 
4012
static
 
4013
void test_read_inotify_event_IN_MOVED_TO(__attribute__((unused))
 
4014
                                         test_fixture *fixture,
 
4015
                                         __attribute__((unused))
 
4016
                                         gconstpointer user_data){
 
4017
  __attribute__((cleanup(cleanup_close)))
 
4018
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
4019
  g_assert_cmpint(epoll_fd, >=, 0);
 
4020
  const mono_microsecs current_time = 0;
 
4021
 
 
4022
  int pipefds[2];
 
4023
  g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);
 
4024
 
 
4025
  /* "sufficient to read at least one event." - inotify(7) */
 
4026
  const size_t ievent_max_size = (sizeof(struct inotify_event)
 
4027
                                  + NAME_MAX + 1);
 
4028
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
 
4029
  struct {
 
4030
    struct inotify_event event;
 
4031
    char name_buffer[NAME_MAX + 1];
 
4032
  } ievent_buffer;
 
4033
  struct inotify_event *const ievent = &ievent_buffer.event;
 
4034
 
 
4035
  const char dummy_file_name[] = "ask.dummy_file_name";
 
4036
  ievent->mask = IN_MOVED_TO;
 
4037
  ievent->len = sizeof(dummy_file_name);
 
4038
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
 
4039
  const size_t ievent_size = (sizeof(struct inotify_event)
 
4040
                              + sizeof(dummy_file_name));
 
4041
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
 
4042
                  ==, ievent_size);
 
4043
  g_assert_cmpint(close(pipefds[1]), ==, 0);
 
4044
 
 
4045
  bool quit_now = false;
 
4046
  buffer password = {};
 
4047
  bool mandos_client_exited = false;
 
4048
  bool password_is_read = false;
 
4049
  __attribute__((cleanup(cleanup_queue)))
 
4050
    task_queue *queue = create_queue();
 
4051
  g_assert_nonnull(queue);
 
4052
 
 
4053
  task_context task = {
 
4054
    .func=read_inotify_event,
 
4055
    .epoll_fd=epoll_fd,
 
4056
    .fd=pipefds[0],
 
4057
    .quit_now=&quit_now,
 
4058
    .password=&password,
 
4059
    .filename=strdup("/nonexistent"),
 
4060
    .cancelled_filenames = &(string_set){},
 
4061
    .notafter=0,
 
4062
    .current_time=&current_time,
 
4063
    .mandos_client_exited=&mandos_client_exited,
 
4064
    .password_is_read=&password_is_read,
 
4065
  };
 
4066
  task.func(task, queue);
 
4067
  g_assert_false(quit_now);
 
4068
  g_assert_true(queue->next_run != 0);
 
4069
  g_assert_cmpuint((unsigned int)queue->length, >=, 1);
 
4070
 
 
4071
  g_assert_nonnull(find_matching_task(queue, (task_context){
 
4072
        .func=read_inotify_event,
 
4073
        .epoll_fd=epoll_fd,
 
4074
        .fd=pipefds[0],
 
4075
        .quit_now=&quit_now,
 
4076
        .password=&password,
 
4077
        .filename=task.filename,
 
4078
        .cancelled_filenames=task.cancelled_filenames,
 
4079
        .current_time=&current_time,
 
4080
        .mandos_client_exited=&mandos_client_exited,
 
4081
        .password_is_read=&password_is_read,
 
4082
      }));
 
4083
 
 
4084
  g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],
 
4085
                                   EPOLLIN | EPOLLRDHUP));
 
4086
 
 
4087
  g_assert_cmpuint((unsigned int)queue->length, >=, 2);
 
4088
 
 
4089
  __attribute__((cleanup(cleanup_string)))
 
4090
    char *filename = NULL;
 
4091
  g_assert_cmpint(asprintf(&filename, "%s/%s", task.filename,
 
4092
                           dummy_file_name), >, 0);
 
4093
  g_assert_nonnull(filename);
 
4094
  g_assert_nonnull(find_matching_task(queue, (task_context){
 
4095
        .func=open_and_parse_question,
 
4096
        .epoll_fd=epoll_fd,
 
4097
        .filename=filename,
 
4098
        .question_filename=filename,
 
4099
        .password=&password,
 
4100
        .cancelled_filenames=task.cancelled_filenames,
 
4101
        .current_time=&current_time,
 
4102
        .mandos_client_exited=&mandos_client_exited,
 
4103
        .password_is_read=&password_is_read,
 
4104
      }));
 
4105
}
 
4106
 
 
4107
static void test_read_inotify_event_IN_DELETE(__attribute__((unused))
 
4108
                                              test_fixture *fixture,
 
4109
                                              __attribute__((unused))
 
4110
                                              gconstpointer
 
4111
                                              user_data){
 
4112
  __attribute__((cleanup(cleanup_close)))
 
4113
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
4114
  g_assert_cmpint(epoll_fd, >=, 0);
 
4115
  __attribute__((cleanup(string_set_clear)))
 
4116
    string_set cancelled_filenames = {};
 
4117
  const mono_microsecs current_time = 0;
 
4118
 
 
4119
  int pipefds[2];
 
4120
  g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);
 
4121
 
 
4122
  /* "sufficient to read at least one event." - inotify(7) */
 
4123
  const size_t ievent_max_size = (sizeof(struct inotify_event)
 
4124
                                  + NAME_MAX + 1);
 
4125
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
 
4126
  struct {
 
4127
    struct inotify_event event;
 
4128
    char name_buffer[NAME_MAX + 1];
 
4129
  } ievent_buffer;
 
4130
  struct inotify_event *const ievent = &ievent_buffer.event;
 
4131
 
 
4132
  const char dummy_file_name[] = "ask.dummy_file_name";
 
4133
  ievent->mask = IN_DELETE;
 
4134
  ievent->len = sizeof(dummy_file_name);
 
4135
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
 
4136
  const size_t ievent_size = (sizeof(struct inotify_event)
 
4137
                              + sizeof(dummy_file_name));
 
4138
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
 
4139
                  ==, ievent_size);
 
4140
  g_assert_cmpint(close(pipefds[1]), ==, 0);
 
4141
 
 
4142
  bool quit_now = false;
 
4143
  buffer password = {};
 
4144
  bool mandos_client_exited = false;
 
4145
  bool password_is_read = false;
 
4146
  __attribute__((cleanup(cleanup_queue)))
 
4147
    task_queue *queue = create_queue();
 
4148
  g_assert_nonnull(queue);
 
4149
 
 
4150
  task_context task = {
 
4151
    .func=read_inotify_event,
 
4152
    .epoll_fd=epoll_fd,
 
4153
    .fd=pipefds[0],
 
4154
    .quit_now=&quit_now,
 
4155
    .password=&password,
 
4156
    .filename=strdup("/nonexistent"),
 
4157
    .cancelled_filenames=&cancelled_filenames,
 
4158
    .current_time=&current_time,
 
4159
    .mandos_client_exited=&mandos_client_exited,
 
4160
    .password_is_read=&password_is_read,
 
4161
  };
 
4162
  task.func(task, queue);
 
4163
  g_assert_false(quit_now);
 
4164
  g_assert_true(queue->next_run == 0);
 
4165
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
 
4166
 
 
4167
  g_assert_nonnull(find_matching_task(queue, (task_context){
 
4168
        .func=read_inotify_event,
 
4169
        .epoll_fd=epoll_fd,
 
4170
        .fd=pipefds[0],
 
4171
        .quit_now=&quit_now,
 
4172
        .password=&password,
 
4173
        .filename=task.filename,
 
4174
        .cancelled_filenames=&cancelled_filenames,
 
4175
        .current_time=&current_time,
 
4176
        .mandos_client_exited=&mandos_client_exited,
 
4177
        .password_is_read=&password_is_read,
 
4178
      }));
 
4179
 
 
4180
  g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],
 
4181
                                   EPOLLIN | EPOLLRDHUP));
 
4182
 
 
4183
  __attribute__((cleanup(cleanup_string)))
 
4184
    char *filename = NULL;
 
4185
  g_assert_cmpint(asprintf(&filename, "%s/%s", task.filename,
 
4186
                           dummy_file_name), >, 0);
 
4187
  g_assert_nonnull(filename);
 
4188
  g_assert_true(string_set_contains(*task.cancelled_filenames,
 
4189
                                    filename));
 
4190
}
 
4191
 
 
4192
static void
 
4193
test_read_inotify_event_IN_CLOSE_WRITE_badname(__attribute__((unused))
 
4194
                                               test_fixture *fixture,
 
4195
                                               __attribute__((unused))
 
4196
                                               gconstpointer
 
4197
                                               user_data){
 
4198
  __attribute__((cleanup(cleanup_close)))
 
4199
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
4200
  g_assert_cmpint(epoll_fd, >=, 0);
 
4201
  const mono_microsecs current_time = 0;
 
4202
 
 
4203
  int pipefds[2];
 
4204
  g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);
 
4205
 
 
4206
  /* "sufficient to read at least one event." - inotify(7) */
 
4207
  const size_t ievent_max_size = (sizeof(struct inotify_event)
 
4208
                                  + NAME_MAX + 1);
 
4209
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
 
4210
  struct {
 
4211
    struct inotify_event event;
 
4212
    char name_buffer[NAME_MAX + 1];
 
4213
  } ievent_buffer;
 
4214
  struct inotify_event *const ievent = &ievent_buffer.event;
 
4215
 
 
4216
  const char dummy_file_name[] = "ignored.dummy_file_name";
 
4217
  ievent->mask = IN_CLOSE_WRITE;
 
4218
  ievent->len = sizeof(dummy_file_name);
 
4219
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
 
4220
  const size_t ievent_size = (sizeof(struct inotify_event)
 
4221
                              + sizeof(dummy_file_name));
 
4222
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
 
4223
                  ==, ievent_size);
 
4224
  g_assert_cmpint(close(pipefds[1]), ==, 0);
 
4225
 
 
4226
  bool quit_now = false;
 
4227
  buffer password = {};
 
4228
  bool mandos_client_exited = false;
 
4229
  bool password_is_read = false;
 
4230
  __attribute__((cleanup(cleanup_queue)))
 
4231
    task_queue *queue = create_queue();
 
4232
  g_assert_nonnull(queue);
 
4233
 
 
4234
  task_context task = {
 
4235
    .func=read_inotify_event,
 
4236
    .epoll_fd=epoll_fd,
 
4237
    .fd=pipefds[0],
 
4238
    .quit_now=&quit_now,
 
4239
    .password=&password,
 
4240
    .filename=strdup("/nonexistent"),
 
4241
    .cancelled_filenames = &(string_set){},
 
4242
    .notafter=0,
 
4243
    .current_time=&current_time,
 
4244
    .mandos_client_exited=&mandos_client_exited,
 
4245
    .password_is_read=&password_is_read,
 
4246
  };
 
4247
  task.func(task, queue);
 
4248
  g_assert_false(quit_now);
 
4249
  g_assert_true(queue->next_run == 0);
 
4250
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
 
4251
 
 
4252
  g_assert_nonnull(find_matching_task(queue, (task_context){
 
4253
        .func=read_inotify_event,
 
4254
        .epoll_fd=epoll_fd,
 
4255
        .fd=pipefds[0],
 
4256
        .quit_now=&quit_now,
 
4257
        .password=&password,
 
4258
        .filename=task.filename,
 
4259
        .cancelled_filenames=task.cancelled_filenames,
 
4260
        .current_time=&current_time,
 
4261
        .mandos_client_exited=&mandos_client_exited,
 
4262
        .password_is_read=&password_is_read,
 
4263
      }));
 
4264
 
 
4265
  g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],
 
4266
                                   EPOLLIN | EPOLLRDHUP));
 
4267
}
 
4268
 
 
4269
static void
 
4270
test_read_inotify_event_IN_MOVED_TO_badname(__attribute__((unused))
 
4271
                                            test_fixture *fixture,
 
4272
                                            __attribute__((unused))
 
4273
                                            gconstpointer user_data){
 
4274
  __attribute__((cleanup(cleanup_close)))
 
4275
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
4276
  g_assert_cmpint(epoll_fd, >=, 0);
 
4277
  const mono_microsecs current_time = 0;
 
4278
 
 
4279
  int pipefds[2];
 
4280
  g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);
 
4281
 
 
4282
  /* "sufficient to read at least one event." - inotify(7) */
 
4283
  const size_t ievent_max_size = (sizeof(struct inotify_event)
 
4284
                                  + NAME_MAX + 1);
 
4285
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
 
4286
  struct {
 
4287
    struct inotify_event event;
 
4288
    char name_buffer[NAME_MAX + 1];
 
4289
  } ievent_buffer;
 
4290
  struct inotify_event *const ievent = &ievent_buffer.event;
 
4291
 
 
4292
  const char dummy_file_name[] = "ignored.dummy_file_name";
 
4293
  ievent->mask = IN_MOVED_TO;
 
4294
  ievent->len = sizeof(dummy_file_name);
 
4295
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
 
4296
  const size_t ievent_size = (sizeof(struct inotify_event)
 
4297
                              + sizeof(dummy_file_name));
 
4298
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
 
4299
                  ==, ievent_size);
 
4300
  g_assert_cmpint(close(pipefds[1]), ==, 0);
 
4301
 
 
4302
  bool quit_now = false;
 
4303
  buffer password = {};
 
4304
  bool mandos_client_exited = false;
 
4305
  bool password_is_read = false;
 
4306
  __attribute__((cleanup(cleanup_queue)))
 
4307
    task_queue *queue = create_queue();
 
4308
  g_assert_nonnull(queue);
 
4309
 
 
4310
  task_context task = {
 
4311
    .func=read_inotify_event,
 
4312
    .epoll_fd=epoll_fd,
 
4313
    .fd=pipefds[0],
 
4314
    .quit_now=&quit_now,
 
4315
    .password=&password,
 
4316
    .filename=strdup("/nonexistent"),
 
4317
    .cancelled_filenames = &(string_set){},
 
4318
    .notafter=0,
 
4319
    .current_time=&current_time,
 
4320
    .mandos_client_exited=&mandos_client_exited,
 
4321
    .password_is_read=&password_is_read,
 
4322
  };
 
4323
  task.func(task, queue);
 
4324
  g_assert_false(quit_now);
 
4325
  g_assert_true(queue->next_run == 0);
 
4326
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
 
4327
 
 
4328
  g_assert_nonnull(find_matching_task(queue, (task_context){
 
4329
        .func=read_inotify_event,
 
4330
        .epoll_fd=epoll_fd,
 
4331
        .fd=pipefds[0],
 
4332
        .quit_now=&quit_now,
 
4333
        .password=&password,
 
4334
        .filename=task.filename,
 
4335
        .cancelled_filenames=task.cancelled_filenames,
 
4336
        .current_time=&current_time,
 
4337
        .mandos_client_exited=&mandos_client_exited,
 
4338
        .password_is_read=&password_is_read,
 
4339
      }));
 
4340
 
 
4341
  g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],
 
4342
                                   EPOLLIN | EPOLLRDHUP));
 
4343
}
 
4344
 
 
4345
static
 
4346
void test_read_inotify_event_IN_DELETE_badname(__attribute__((unused))
 
4347
                                               test_fixture *fixture,
 
4348
                                               __attribute__((unused))
 
4349
                                               gconstpointer
 
4350
                                               user_data){
 
4351
  __attribute__((cleanup(cleanup_close)))
 
4352
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
4353
  g_assert_cmpint(epoll_fd, >=, 0);
 
4354
  __attribute__((cleanup(string_set_clear)))
 
4355
    string_set cancelled_filenames = {};
 
4356
  const mono_microsecs current_time = 0;
 
4357
 
 
4358
  int pipefds[2];
 
4359
  g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);
 
4360
 
 
4361
  /* "sufficient to read at least one event." - inotify(7) */
 
4362
  const size_t ievent_max_size = (sizeof(struct inotify_event)
 
4363
                                  + NAME_MAX + 1);
 
4364
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
 
4365
  struct {
 
4366
    struct inotify_event event;
 
4367
    char name_buffer[NAME_MAX + 1];
 
4368
  } ievent_buffer;
 
4369
  struct inotify_event *const ievent = &ievent_buffer.event;
 
4370
 
 
4371
  const char dummy_file_name[] = "ignored.dummy_file_name";
 
4372
  ievent->mask = IN_DELETE;
 
4373
  ievent->len = sizeof(dummy_file_name);
 
4374
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
 
4375
  const size_t ievent_size = (sizeof(struct inotify_event)
 
4376
                              + sizeof(dummy_file_name));
 
4377
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
 
4378
                  ==, ievent_size);
 
4379
  g_assert_cmpint(close(pipefds[1]), ==, 0);
 
4380
 
 
4381
  bool quit_now = false;
 
4382
  buffer password = {};
 
4383
  bool mandos_client_exited = false;
 
4384
  bool password_is_read = false;
 
4385
  __attribute__((cleanup(cleanup_queue)))
 
4386
    task_queue *queue = create_queue();
 
4387
  g_assert_nonnull(queue);
 
4388
 
 
4389
  task_context task = {
 
4390
    .func=read_inotify_event,
 
4391
    .epoll_fd=epoll_fd,
 
4392
    .fd=pipefds[0],
 
4393
    .quit_now=&quit_now,
 
4394
    .password=&password,
 
4395
    .filename=strdup("/nonexistent"),
 
4396
    .cancelled_filenames=&cancelled_filenames,
 
4397
    .current_time=&current_time,
 
4398
    .mandos_client_exited=&mandos_client_exited,
 
4399
    .password_is_read=&password_is_read,
 
4400
  };
 
4401
  task.func(task, queue);
 
4402
  g_assert_false(quit_now);
 
4403
  g_assert_true(queue->next_run == 0);
 
4404
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
 
4405
 
 
4406
  g_assert_nonnull(find_matching_task(queue, (task_context){
 
4407
        .func=read_inotify_event,
 
4408
        .epoll_fd=epoll_fd,
 
4409
        .fd=pipefds[0],
 
4410
        .quit_now=&quit_now,
 
4411
        .password=&password,
 
4412
        .filename=task.filename,
 
4413
        .cancelled_filenames=&cancelled_filenames,
 
4414
        .current_time=&current_time,
 
4415
        .mandos_client_exited=&mandos_client_exited,
 
4416
        .password_is_read=&password_is_read,
 
4417
      }));
 
4418
 
 
4419
  g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],
 
4420
                                   EPOLLIN | EPOLLRDHUP));
 
4421
 
 
4422
  __attribute__((cleanup(cleanup_string)))
 
4423
    char *filename = NULL;
 
4424
  g_assert_cmpint(asprintf(&filename, "%s/%s", task.filename,
 
4425
                           dummy_file_name), >, 0);
 
4426
  g_assert_nonnull(filename);
 
4427
  g_assert_false(string_set_contains(cancelled_filenames, filename));
 
4428
}
 
4429
 
 
4430
static
 
4431
void test_open_and_parse_question_ENOENT(__attribute__((unused))
 
4432
                                         test_fixture *fixture,
 
4433
                                         __attribute__((unused))
 
4434
                                         gconstpointer user_data){
 
4435
  __attribute__((cleanup(cleanup_close)))
 
4436
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
4437
  g_assert_cmpint(epoll_fd, >=, 0);
 
4438
  __attribute__((cleanup(string_set_clear)))
 
4439
    string_set cancelled_filenames = {};
 
4440
  bool mandos_client_exited = false;
 
4441
  bool password_is_read = false;
 
4442
  __attribute__((cleanup(cleanup_queue)))
 
4443
    task_queue *queue = create_queue();
 
4444
  g_assert_nonnull(queue);
 
4445
 
 
4446
  char *const filename = strdup("/nonexistent");
 
4447
  g_assert_nonnull(filename);
 
4448
  task_context task = {
 
4449
    .func=open_and_parse_question,
 
4450
    .question_filename=filename,
 
4451
    .epoll_fd=epoll_fd,
 
4452
    .password=(buffer[]){{}},
 
4453
    .filename=filename,
 
4454
    .cancelled_filenames=&cancelled_filenames,
 
4455
    .current_time=(mono_microsecs[]){0},
 
4456
    .mandos_client_exited=&mandos_client_exited,
 
4457
    .password_is_read=&password_is_read,
 
4458
  };
 
4459
  task.func(task, queue);
 
4460
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
4461
}
 
4462
 
 
4463
static void test_open_and_parse_question_EIO(__attribute__((unused))
 
4464
                                             test_fixture *fixture,
 
4465
                                             __attribute__((unused))
 
4466
                                             gconstpointer user_data){
 
4467
  __attribute__((cleanup(cleanup_close)))
 
4468
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
4469
  g_assert_cmpint(epoll_fd, >=, 0);
 
4470
  __attribute__((cleanup(string_set_clear)))
 
4471
    string_set cancelled_filenames = {};
 
4472
  buffer password = {};
 
4473
  bool mandos_client_exited = false;
 
4474
  bool password_is_read = false;
 
4475
  __attribute__((cleanup(cleanup_queue)))
 
4476
    task_queue *queue = create_queue();
 
4477
  g_assert_nonnull(queue);
 
4478
  const mono_microsecs current_time = 0;
 
4479
 
 
4480
  char *filename = strdup("/proc/self/mem");
 
4481
  task_context task = {
 
4482
    .func=open_and_parse_question,
 
4483
    .question_filename=filename,
 
4484
    .epoll_fd=epoll_fd,
 
4485
    .password=&password,
 
4486
    .filename=filename,
 
4487
    .cancelled_filenames=&cancelled_filenames,
 
4488
    .current_time=&current_time,
 
4489
    .mandos_client_exited=&mandos_client_exited,
 
4490
    .password_is_read=&password_is_read,
 
4491
  };
 
4492
  run_task_with_stderr_to_dev_null(task, queue);
 
4493
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
4494
}
 
4495
 
 
4496
static void
 
4497
test_open_and_parse_question_parse_error(__attribute__((unused))
 
4498
                                         test_fixture *fixture,
 
4499
                                         __attribute__((unused))
 
4500
                                         gconstpointer user_data){
 
4501
  __attribute__((cleanup(cleanup_close)))
 
4502
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
4503
  g_assert_cmpint(epoll_fd, >=, 0);
 
4504
  __attribute__((cleanup(string_set_clear)))
 
4505
    string_set cancelled_filenames = {};
 
4506
  __attribute__((cleanup(cleanup_queue)))
 
4507
    task_queue *queue = create_queue();
 
4508
  g_assert_nonnull(queue);
 
4509
 
 
4510
  __attribute__((cleanup(cleanup_string)))
 
4511
    char *tempfilename = strdup("/tmp/mandosXXXXXX");
 
4512
  g_assert_nonnull(tempfilename);
 
4513
  int tempfile = mkostemp(tempfilename, O_CLOEXEC);
 
4514
  g_assert_cmpint(tempfile, >, 0);
 
4515
  const char bad_data[] = "this is bad syntax\n";
 
4516
  g_assert_cmpint(write(tempfile, bad_data, sizeof(bad_data)),
 
4517
                  ==, sizeof(bad_data));
 
4518
  g_assert_cmpint(close(tempfile), ==, 0);
 
4519
 
 
4520
  char *const filename = strdup(tempfilename);
 
4521
  g_assert_nonnull(filename);
 
4522
  task_context task = {
 
4523
    .func=open_and_parse_question,
 
4524
    .question_filename=filename,
 
4525
    .epoll_fd=epoll_fd,
 
4526
    .password=(buffer[]){{}},
 
4527
    .filename=filename,
 
4528
    .cancelled_filenames=&cancelled_filenames,
 
4529
    .current_time=(mono_microsecs[]){0},
 
4530
    .mandos_client_exited=(bool[]){false},
 
4531
    .password_is_read=(bool[]){false},
 
4532
  };
 
4533
  run_task_with_stderr_to_dev_null(task, queue);
 
4534
 
 
4535
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
4536
 
 
4537
  g_assert_cmpint(unlink(tempfilename), ==, 0);
 
4538
}
 
4539
 
 
4540
static
 
4541
void test_open_and_parse_question_nosocket(__attribute__((unused))
 
4542
                                           test_fixture *fixture,
 
4543
                                           __attribute__((unused))
 
4544
                                           gconstpointer user_data){
 
4545
  __attribute__((cleanup(cleanup_close)))
 
4546
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
4547
  g_assert_cmpint(epoll_fd, >=, 0);
 
4548
  __attribute__((cleanup(string_set_clear)))
 
4549
    string_set cancelled_filenames = {};
 
4550
  __attribute__((cleanup(cleanup_queue)))
 
4551
    task_queue *queue = create_queue();
 
4552
  g_assert_nonnull(queue);
 
4553
 
 
4554
  __attribute__((cleanup(cleanup_string)))
 
4555
    char *tempfilename = strdup("/tmp/mandosXXXXXX");
 
4556
  g_assert_nonnull(tempfilename);
 
4557
  int questionfile = mkostemp(tempfilename, O_CLOEXEC);
 
4558
  g_assert_cmpint(questionfile, >, 0);
 
4559
  FILE *qf = fdopen(questionfile, "w");
 
4560
  g_assert_cmpint(fprintf(qf, "[Ask]\nPID=1\n"), >, 0);
 
4561
  g_assert_cmpint(fclose(qf), ==, 0);
 
4562
 
 
4563
  char *const filename = strdup(tempfilename);
 
4564
  g_assert_nonnull(filename);
 
4565
  task_context task = {
 
4566
    .func=open_and_parse_question,
 
4567
    .question_filename=filename,
 
4568
    .epoll_fd=epoll_fd,
 
4569
    .password=(buffer[]){{}},
 
4570
    .filename=filename,
 
4571
    .cancelled_filenames=&cancelled_filenames,
 
4572
    .current_time=(mono_microsecs[]){0},
 
4573
    .mandos_client_exited=(bool[]){false},
 
4574
    .password_is_read=(bool[]){false},
 
4575
  };
 
4576
  run_task_with_stderr_to_dev_null(task, queue);
 
4577
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
4578
 
 
4579
  g_assert_cmpint(unlink(tempfilename), ==, 0);
 
4580
}
 
4581
 
 
4582
static
 
4583
void test_open_and_parse_question_badsocket(__attribute__((unused))
 
4584
                                            test_fixture *fixture,
 
4585
                                            __attribute__((unused))
 
4586
                                            gconstpointer user_data){
 
4587
  __attribute__((cleanup(cleanup_close)))
 
4588
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
4589
  g_assert_cmpint(epoll_fd, >=, 0);
 
4590
  __attribute__((cleanup(string_set_clear)))
 
4591
    string_set cancelled_filenames = {};
 
4592
  __attribute__((cleanup(cleanup_queue)))
 
4593
    task_queue *queue = create_queue();
 
4594
  g_assert_nonnull(queue);
 
4595
 
 
4596
  __attribute__((cleanup(cleanup_string)))
 
4597
    char *tempfilename = strdup("/tmp/mandosXXXXXX");
 
4598
  g_assert_nonnull(tempfilename);
 
4599
  int questionfile = mkostemp(tempfilename, O_CLOEXEC);
 
4600
  g_assert_cmpint(questionfile, >, 0);
 
4601
  FILE *qf = fdopen(questionfile, "w");
 
4602
  g_assert_cmpint(fprintf(qf, "[Ask]\nSocket=\nPID=1\n"), >, 0);
 
4603
  g_assert_cmpint(fclose(qf), ==, 0);
 
4604
 
 
4605
  char *const filename = strdup(tempfilename);
 
4606
  g_assert_nonnull(filename);
 
4607
  task_context task = {
 
4608
    .func=open_and_parse_question,
 
4609
    .question_filename=filename,
 
4610
    .epoll_fd=epoll_fd,
 
4611
    .password=(buffer[]){{}},
 
4612
    .filename=filename,
 
4613
    .cancelled_filenames=&cancelled_filenames,
 
4614
    .current_time=(mono_microsecs[]){0},
 
4615
    .mandos_client_exited=(bool[]){false},
 
4616
    .password_is_read=(bool[]){false},
 
4617
  };
 
4618
  run_task_with_stderr_to_dev_null(task, queue);
 
4619
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
4620
 
 
4621
  g_assert_cmpint(unlink(tempfilename), ==, 0);
 
4622
}
 
4623
 
 
4624
static
 
4625
void test_open_and_parse_question_nopid(__attribute__((unused))
 
4626
                                        test_fixture *fixture,
 
4627
                                        __attribute__((unused))
 
4628
                                        gconstpointer user_data){
 
4629
  __attribute__((cleanup(cleanup_close)))
 
4630
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
4631
  g_assert_cmpint(epoll_fd, >=, 0);
 
4632
  __attribute__((cleanup(string_set_clear)))
 
4633
    string_set cancelled_filenames = {};
 
4634
  __attribute__((cleanup(cleanup_queue)))
 
4635
    task_queue *queue = create_queue();
 
4636
  g_assert_nonnull(queue);
 
4637
 
 
4638
  __attribute__((cleanup(cleanup_string)))
 
4639
    char *tempfilename = strdup("/tmp/mandosXXXXXX");
 
4640
  g_assert_nonnull(tempfilename);
 
4641
  int questionfile = mkostemp(tempfilename, O_CLOEXEC);
 
4642
  g_assert_cmpint(questionfile, >, 0);
 
4643
  FILE *qf = fdopen(questionfile, "w");
 
4644
  g_assert_cmpint(fprintf(qf, "[Ask]\nSocket=/nonexistent\n"), >, 0);
 
4645
  g_assert_cmpint(fclose(qf), ==, 0);
 
4646
 
 
4647
  char *const filename = strdup(tempfilename);
 
4648
  g_assert_nonnull(filename);
 
4649
  task_context task = {
 
4650
    .func=open_and_parse_question,
 
4651
    .question_filename=filename,
 
4652
    .epoll_fd=epoll_fd,
 
4653
    .password=(buffer[]){{}},
 
4654
    .filename=filename,
 
4655
    .cancelled_filenames=&cancelled_filenames,
 
4656
    .current_time=(mono_microsecs[]){0},
 
4657
    .mandos_client_exited=(bool[]){false},
 
4658
    .password_is_read=(bool[]){false},
 
4659
  };
 
4660
  run_task_with_stderr_to_dev_null(task, queue);
 
4661
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
4662
 
 
4663
  g_assert_cmpint(unlink(tempfilename), ==, 0);
 
4664
}
 
4665
 
 
4666
static
 
4667
void test_open_and_parse_question_badpid(__attribute__((unused))
 
4668
                                         test_fixture *fixture,
 
4669
                                         __attribute__((unused))
 
4670
                                         gconstpointer user_data){
 
4671
  __attribute__((cleanup(cleanup_close)))
 
4672
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
4673
  g_assert_cmpint(epoll_fd, >=, 0);
 
4674
  __attribute__((cleanup(string_set_clear)))
 
4675
    string_set cancelled_filenames = {};
 
4676
  __attribute__((cleanup(cleanup_queue)))
 
4677
    task_queue *queue = create_queue();
 
4678
  g_assert_nonnull(queue);
 
4679
 
 
4680
  __attribute__((cleanup(cleanup_string)))
 
4681
    char *tempfilename = strdup("/tmp/mandosXXXXXX");
 
4682
  g_assert_nonnull(tempfilename);
 
4683
  int questionfile = mkostemp(tempfilename, O_CLOEXEC);
 
4684
  g_assert_cmpint(questionfile, >, 0);
 
4685
  FILE *qf = fdopen(questionfile, "w");
 
4686
  g_assert_cmpint(fprintf(qf, "[Ask]\nSocket=/nonexistent\nPID=\n"),
 
4687
                  >, 0);
 
4688
  g_assert_cmpint(fclose(qf), ==, 0);
 
4689
 
 
4690
  char *const filename = strdup(tempfilename);
 
4691
  g_assert_nonnull(filename);
 
4692
  task_context task = {
 
4693
    .func=open_and_parse_question,
 
4694
    .question_filename=filename,
 
4695
    .epoll_fd=epoll_fd,
 
4696
    .password=(buffer[]){{}},
 
4697
    .filename=filename,
 
4698
    .cancelled_filenames=&cancelled_filenames,
 
4699
    .current_time=(mono_microsecs[]){0},
 
4700
    .mandos_client_exited=(bool[]){false},
 
4701
    .password_is_read=(bool[]){false},
 
4702
  };
 
4703
  run_task_with_stderr_to_dev_null(task, queue);
 
4704
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
4705
 
 
4706
  g_assert_cmpint(unlink(tempfilename), ==, 0);
 
4707
}
 
4708
 
 
4709
static void
 
4710
test_open_and_parse_question_noexist_pid(__attribute__((unused))
 
4711
                                         test_fixture *fixture,
 
4712
                                         __attribute__((unused))
 
4713
                                         gconstpointer user_data){
 
4714
  __attribute__((cleanup(cleanup_close)))
 
4715
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
4716
  g_assert_cmpint(epoll_fd, >=, 0);
 
4717
  __attribute__((cleanup(string_set_clear)))
 
4718
    string_set cancelled_filenames = {};
 
4719
  buffer password = {};
 
4720
  bool mandos_client_exited = false;
 
4721
  bool password_is_read = false;
 
4722
  __attribute__((cleanup(cleanup_queue)))
 
4723
    task_queue *queue = create_queue();
 
4724
  g_assert_nonnull(queue);
 
4725
  const mono_microsecs current_time = 0;
 
4726
 
 
4727
  /* Find value of sysctl kernel.pid_max */
 
4728
  uintmax_t pid_max = 0;
 
4729
  FILE *sysctl_pid_max = fopen("/proc/sys/kernel/pid_max", "r");
 
4730
  g_assert_nonnull(sysctl_pid_max);
 
4731
  g_assert_cmpint(fscanf(sysctl_pid_max, "%" PRIuMAX, &pid_max),
 
4732
                  ==, 1);
 
4733
  g_assert_cmpint(fclose(sysctl_pid_max), ==, 0);
 
4734
 
 
4735
  pid_t nonexisting_pid = ((pid_t)pid_max)+1;
 
4736
  g_assert_true(nonexisting_pid > 0); /* Overflow check */
 
4737
 
 
4738
  __attribute__((cleanup(cleanup_string)))
 
4739
    char *tempfilename = strdup("/tmp/mandosXXXXXX");
 
4740
  g_assert_nonnull(tempfilename);
 
4741
  int questionfile = mkostemp(tempfilename, O_CLOEXEC);
 
4742
  g_assert_cmpint(questionfile, >, 0);
 
4743
  FILE *qf = fdopen(questionfile, "w");
 
4744
  g_assert_cmpint(fprintf(qf, "[Ask]\nSocket=/nonexistent\nPID=%"
 
4745
                          PRIuMAX"\n", (uintmax_t)nonexisting_pid),
 
4746
                  >, 0);
 
4747
  g_assert_cmpint(fclose(qf), ==, 0);
 
4748
 
 
4749
  char *const question_filename = strdup(tempfilename);
 
4750
  g_assert_nonnull(question_filename);
 
4751
  task_context task = {
 
4752
    .func=open_and_parse_question,
 
4753
    .question_filename=question_filename,
 
4754
    .epoll_fd=epoll_fd,
 
4755
    .password=&password,
 
4756
    .filename=question_filename,
 
4757
    .cancelled_filenames=&cancelled_filenames,
 
4758
    .current_time=&current_time,
 
4759
    .mandos_client_exited=&mandos_client_exited,
 
4760
    .password_is_read=&password_is_read,
 
4761
  };
 
4762
  run_task_with_stderr_to_dev_null(task, queue);
 
4763
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
4764
 
 
4765
  g_assert_cmpint(unlink(tempfilename), ==, 0);
 
4766
}
 
4767
 
 
4768
static void
 
4769
test_open_and_parse_question_no_notafter(__attribute__((unused))
 
4770
                                         test_fixture *fixture,
 
4771
                                         __attribute__((unused))
 
4772
                                         gconstpointer user_data){
 
4773
  __attribute__((cleanup(cleanup_close)))
 
4774
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
4775
  g_assert_cmpint(epoll_fd, >=, 0);
 
4776
  __attribute__((cleanup(string_set_clear)))
 
4777
    string_set cancelled_filenames = {};
 
4778
  buffer password = {};
 
4779
  bool mandos_client_exited = false;
 
4780
  bool password_is_read = false;
 
4781
  __attribute__((cleanup(cleanup_queue)))
 
4782
    task_queue *queue = create_queue();
 
4783
  g_assert_nonnull(queue);
 
4784
  const mono_microsecs current_time = 0;
 
4785
 
 
4786
  __attribute__((cleanup(cleanup_string)))
 
4787
    char *tempfilename = strdup("/tmp/mandosXXXXXX");
 
4788
  g_assert_nonnull(tempfilename);
 
4789
  int questionfile = mkostemp(tempfilename, O_CLOEXEC);
 
4790
  g_assert_cmpint(questionfile, >, 0);
 
4791
  FILE *qf = fdopen(questionfile, "w");
 
4792
  g_assert_cmpint(fprintf(qf, "[Ask]\nSocket=/nonexistent\nPID=%"
 
4793
                          PRIuMAX "\n", (uintmax_t)getpid()), >, 0);
 
4794
  g_assert_cmpint(fclose(qf), ==, 0);
 
4795
 
 
4796
  char *const filename = strdup(tempfilename);
 
4797
  g_assert_nonnull(filename);
 
4798
  task_context task = {
 
4799
    .func=open_and_parse_question,
 
4800
    .question_filename=filename,
 
4801
    .epoll_fd=epoll_fd,
 
4802
    .password=&password,
 
4803
    .filename=filename,
 
4804
    .cancelled_filenames=&cancelled_filenames,
 
4805
    .current_time=&current_time,
 
4806
    .mandos_client_exited=&mandos_client_exited,
 
4807
    .password_is_read=&password_is_read,
 
4808
  };
 
4809
  task.func(task, queue);
 
4810
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
 
4811
 
 
4812
  __attribute__((cleanup(cleanup_string)))
 
4813
    char *socket_filename = strdup("/nonexistent");
 
4814
  g_assert_nonnull(socket_filename);
 
4815
  g_assert_nonnull(find_matching_task(queue, (task_context){
 
4816
        .func=connect_question_socket,
 
4817
        .question_filename=tempfilename,
 
4818
        .filename=socket_filename,
 
4819
        .epoll_fd=epoll_fd,
 
4820
        .password=&password,
 
4821
        .current_time=&current_time,
 
4822
        .mandos_client_exited=&mandos_client_exited,
 
4823
        .password_is_read=&password_is_read,
 
4824
      }));
 
4825
 
 
4826
  g_assert_true(queue->next_run != 0);
 
4827
 
 
4828
  g_assert_cmpint(unlink(tempfilename), ==, 0);
 
4829
}
 
4830
 
 
4831
static void
 
4832
test_open_and_parse_question_bad_notafter(__attribute__((unused))
 
4833
                                          test_fixture *fixture,
 
4834
                                          __attribute__((unused))
 
4835
                                          gconstpointer user_data){
 
4836
  __attribute__((cleanup(cleanup_close)))
 
4837
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
4838
  g_assert_cmpint(epoll_fd, >=, 0);
 
4839
  __attribute__((cleanup(string_set_clear)))
 
4840
    string_set cancelled_filenames = {};
 
4841
  buffer password = {};
 
4842
  bool mandos_client_exited = false;
 
4843
  bool password_is_read = false;
 
4844
  __attribute__((cleanup(cleanup_queue)))
 
4845
    task_queue *queue = create_queue();
 
4846
  g_assert_nonnull(queue);
 
4847
  const mono_microsecs current_time = 0;
 
4848
 
 
4849
  __attribute__((cleanup(cleanup_string)))
 
4850
    char *tempfilename = strdup("/tmp/mandosXXXXXX");
 
4851
  g_assert_nonnull(tempfilename);
 
4852
  int questionfile = mkostemp(tempfilename, O_CLOEXEC);
 
4853
  g_assert_cmpint(questionfile, >, 0);
 
4854
  FILE *qf = fdopen(questionfile, "w");
 
4855
  g_assert_cmpint(fprintf(qf, "[Ask]\nSocket=/nonexistent\nPID=%"
 
4856
                          PRIuMAX "\nNotAfter=\n",
 
4857
                          (uintmax_t)getpid()), >, 0);
 
4858
  g_assert_cmpint(fclose(qf), ==, 0);
 
4859
 
 
4860
  char *const filename = strdup(tempfilename);
 
4861
  g_assert_nonnull(filename);
 
4862
  task_context task = {
 
4863
    .func=open_and_parse_question,
 
4864
    .question_filename=filename,
 
4865
    .epoll_fd=epoll_fd,
 
4866
    .password=&password,
 
4867
    .filename=filename,
 
4868
    .cancelled_filenames=&cancelled_filenames,
 
4869
    .current_time=&current_time,
 
4870
    .mandos_client_exited=&mandos_client_exited,
 
4871
    .password_is_read=&password_is_read,
 
4872
  };
 
4873
  run_task_with_stderr_to_dev_null(task, queue);
 
4874
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
 
4875
 
 
4876
  __attribute__((cleanup(cleanup_string)))
 
4877
    char *socket_filename = strdup("/nonexistent");
 
4878
  g_assert_nonnull(find_matching_task(queue, (task_context){
 
4879
        .func=connect_question_socket,
 
4880
        .question_filename=tempfilename,
 
4881
        .filename=socket_filename,
 
4882
        .epoll_fd=epoll_fd,
 
4883
        .password=&password,
 
4884
        .current_time=&current_time,
 
4885
        .mandos_client_exited=&mandos_client_exited,
 
4886
        .password_is_read=&password_is_read,
 
4887
      }));
 
4888
  g_assert_true(queue->next_run != 0);
 
4889
 
 
4890
  g_assert_cmpint(unlink(tempfilename), ==, 0);
 
4891
}
 
4892
 
 
4893
static
 
4894
void assert_open_and_parse_question_with_notafter(const mono_microsecs
 
4895
                                                  current_time,
 
4896
                                                  const mono_microsecs
 
4897
                                                  notafter,
 
4898
                                                  const mono_microsecs
 
4899
                                                  next_queue_run){
 
4900
  __attribute__((cleanup(cleanup_close)))
 
4901
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
4902
  g_assert_cmpint(epoll_fd, >=, 0);
 
4903
  __attribute__((cleanup(string_set_clear)))
 
4904
    string_set cancelled_filenames = {};
 
4905
  buffer password = {};
 
4906
  bool mandos_client_exited = false;
 
4907
  bool password_is_read = false;
 
4908
  __attribute__((cleanup(cleanup_queue)))
 
4909
    task_queue *queue = create_queue();
 
4910
  g_assert_nonnull(queue);
 
4911
  queue->next_run = next_queue_run;
 
4912
 
 
4913
  __attribute__((cleanup(cleanup_string)))
 
4914
    char *tempfilename = strdup("/tmp/mandosXXXXXX");
 
4915
  g_assert_nonnull(tempfilename);
 
4916
  int questionfile = mkostemp(tempfilename, O_CLOEXEC);
 
4917
  g_assert_cmpint(questionfile, >, 0);
 
4918
  FILE *qf = fdopen(questionfile, "w");
 
4919
  g_assert_cmpint(fprintf(qf, "[Ask]\nSocket=/nonexistent\nPID=%"
 
4920
                          PRIuMAX "\nNotAfter=%" PRIuMAX "\n",
 
4921
                          (uintmax_t)getpid(), notafter), >, 0);
 
4922
  g_assert_cmpint(fclose(qf), ==, 0);
 
4923
 
 
4924
  char *const filename = strdup(tempfilename);
 
4925
  g_assert_nonnull(filename);
 
4926
  task_context task = {
 
4927
    .func=open_and_parse_question,
 
4928
    .question_filename=filename,
 
4929
    .epoll_fd=epoll_fd,
 
4930
    .password=&password,
 
4931
    .filename=filename,
 
4932
    .cancelled_filenames=&cancelled_filenames,
 
4933
    .current_time=&current_time,
 
4934
    .mandos_client_exited=&mandos_client_exited,
 
4935
    .password_is_read=&password_is_read,
 
4936
  };
 
4937
  task.func(task, queue);
 
4938
 
 
4939
  if(queue->length >= 1){
 
4940
    __attribute__((cleanup(cleanup_string)))
 
4941
      char *socket_filename = strdup("/nonexistent");
 
4942
    g_assert_nonnull(find_matching_task(queue, (task_context){
 
4943
          .func=connect_question_socket,
 
4944
          .filename=socket_filename,
 
4945
          .epoll_fd=epoll_fd,
 
4946
          .password=&password,
 
4947
          .current_time=&current_time,
 
4948
          .cancelled_filenames=&cancelled_filenames,
 
4949
          .mandos_client_exited=&mandos_client_exited,
 
4950
          .password_is_read=&password_is_read,
 
4951
        }));
 
4952
    g_assert_true(queue->next_run != 0);
 
4953
  }
 
4954
 
 
4955
  if(notafter == 0){
 
4956
    g_assert_cmpuint((unsigned int)queue->length, ==, 1);
 
4957
  } else if(current_time >= notafter) {
 
4958
    g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
4959
  } else {
 
4960
    g_assert_nonnull(find_matching_task(queue, (task_context){
 
4961
          .func=cancel_old_question,
 
4962
          .question_filename=tempfilename,
 
4963
          .filename=tempfilename,
 
4964
          .notafter=notafter,
 
4965
          .cancelled_filenames=&cancelled_filenames,
 
4966
          .current_time=&current_time,
 
4967
        }));
 
4968
  }
 
4969
  g_assert_true(queue->next_run == 1);
 
4970
 
 
4971
  g_assert_cmpint(unlink(tempfilename), ==, 0);
 
4972
}
 
4973
 
 
4974
static void
 
4975
test_open_and_parse_question_notafter_0(__attribute__((unused))
 
4976
                                        test_fixture *fixture,
 
4977
                                        __attribute__((unused))
 
4978
                                        gconstpointer user_data){
 
4979
  /* current_time, notafter, next_queue_run */
 
4980
  assert_open_and_parse_question_with_notafter(0, 0, 0);
 
4981
}
 
4982
 
 
4983
static void
 
4984
test_open_and_parse_question_notafter_1(__attribute__((unused))
 
4985
                                        test_fixture *fixture,
 
4986
                                        __attribute__((unused))
 
4987
                                        gconstpointer user_data){
 
4988
  /* current_time, notafter, next_queue_run */
 
4989
  assert_open_and_parse_question_with_notafter(0, 1, 0);
 
4990
}
 
4991
 
 
4992
static void
 
4993
test_open_and_parse_question_notafter_1_1(__attribute__((unused))
 
4994
                                          test_fixture *fixture,
 
4995
                                          __attribute__((unused))
 
4996
                                          gconstpointer user_data){
 
4997
  /* current_time, notafter, next_queue_run */
 
4998
  assert_open_and_parse_question_with_notafter(0, 1, 1);
 
4999
}
 
5000
 
 
5001
static void
 
5002
test_open_and_parse_question_notafter_1_2(__attribute__((unused))
 
5003
                                          test_fixture *fixture,
 
5004
                                          __attribute__((unused))
 
5005
                                          gconstpointer user_data){
 
5006
  /* current_time, notafter, next_queue_run */
 
5007
  assert_open_and_parse_question_with_notafter(0, 1, 2);
 
5008
}
 
5009
 
 
5010
static void
 
5011
test_open_and_parse_question_equal_notafter(__attribute__((unused))
 
5012
                                            test_fixture *fixture,
 
5013
                                            __attribute__((unused))
 
5014
                                            gconstpointer user_data){
 
5015
  /* current_time, notafter, next_queue_run */
 
5016
  assert_open_and_parse_question_with_notafter(1, 1, 0);
 
5017
}
 
5018
 
 
5019
static void
 
5020
test_open_and_parse_question_late_notafter(__attribute__((unused))
 
5021
                                           test_fixture *fixture,
 
5022
                                           __attribute__((unused))
 
5023
                                           gconstpointer user_data){
 
5024
  /* current_time, notafter, next_queue_run */
 
5025
  assert_open_and_parse_question_with_notafter(2, 1, 0);
 
5026
}
 
5027
 
 
5028
static void assert_cancel_old_question_param(const mono_microsecs
 
5029
                                             next_queue_run,
 
5030
                                             const mono_microsecs
 
5031
                                             notafter,
 
5032
                                             const mono_microsecs
 
5033
                                             current_time,
 
5034
                                             const mono_microsecs
 
5035
                                             next_set_to){
 
5036
  __attribute__((cleanup(string_set_clear)))
 
5037
    string_set cancelled_filenames = {};
 
5038
  __attribute__((cleanup(cleanup_queue)))
 
5039
    task_queue *queue = create_queue();
 
5040
  g_assert_nonnull(queue);
 
5041
  queue->next_run = next_queue_run;
 
5042
 
 
5043
  char *const question_filename = strdup("/nonexistent");
 
5044
  g_assert_nonnull(question_filename);
 
5045
  task_context task = {
 
5046
    .func=cancel_old_question,
 
5047
    .question_filename=question_filename,
 
5048
    .filename=question_filename,
 
5049
    .notafter=notafter,
 
5050
    .cancelled_filenames=&cancelled_filenames,
 
5051
    .current_time=&current_time,
 
5052
  };
 
5053
  task.func(task, queue);
 
5054
 
 
5055
  if(current_time >= notafter){
 
5056
    g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
5057
    g_assert_true(string_set_contains(cancelled_filenames,
 
5058
                                      "/nonexistent"));
 
5059
  } else {
 
5060
    g_assert_nonnull(find_matching_task(queue, (task_context){
 
5061
          .func=cancel_old_question,
 
5062
          .question_filename=question_filename,
 
5063
          .filename=question_filename,
 
5064
          .notafter=notafter,
 
5065
          .cancelled_filenames=&cancelled_filenames,
 
5066
          .current_time=&current_time,
 
5067
        }));
 
5068
 
 
5069
    g_assert_false(string_set_contains(cancelled_filenames,
 
5070
                                       question_filename));
 
5071
  }
 
5072
  g_assert_cmpuint((unsigned int)queue->next_run, ==,
 
5073
                   (unsigned int)next_set_to);
 
5074
}
 
5075
 
 
5076
static void test_cancel_old_question_0_1_2(__attribute__((unused))
 
5077
                                           test_fixture *fixture,
 
5078
                                           __attribute__((unused))
 
5079
                                           gconstpointer user_data){
 
5080
  /* next_queue_run unset,
 
5081
     cancellation should happen because time has come,
 
5082
     next_queue_run should be unchanged */
 
5083
  /* next_queue_run, notafter, current_time, next_set_to */
 
5084
  assert_cancel_old_question_param(0, 1, 2, 0);
 
5085
}
 
5086
 
 
5087
static void test_cancel_old_question_0_2_1(__attribute__((unused))
 
5088
                                           test_fixture *fixture,
 
5089
                                           __attribute__((unused))
 
5090
                                           gconstpointer user_data){
 
5091
  /* If next_queue_run is 0, meaning unset, and notafter is 2,
 
5092
     and current_time is not yet notafter or greater,
 
5093
     update value of next_queue_run to value of notafter */
 
5094
  /* next_queue_run, notafter, current_time, next_set_to */
 
5095
  assert_cancel_old_question_param(0, 2, 1, 2);
 
5096
}
 
5097
 
 
5098
static void test_cancel_old_question_1_2_3(__attribute__((unused))
 
5099
                                           test_fixture *fixture,
 
5100
                                           __attribute__((unused))
 
5101
                                           gconstpointer user_data){
 
5102
  /* next_queue_run 1,
 
5103
     cancellation should happen because time has come,
 
5104
     next_queue_run should be unchanged */
 
5105
  /* next_queue_run, notafter, current_time, next_set_to */
 
5106
  assert_cancel_old_question_param(1, 2, 3, 1);
 
5107
}
 
5108
 
 
5109
static void test_cancel_old_question_1_3_2(__attribute__((unused))
 
5110
                                           test_fixture *fixture,
 
5111
                                           __attribute__((unused))
 
5112
                                           gconstpointer user_data){
 
5113
  /* If next_queue_run is set,
 
5114
     and current_time is not yet notafter or greater,
 
5115
     and notafter is larger than next_queue_run
 
5116
     next_queue_run should be unchanged */
 
5117
  /* next_queue_run, notafter, current_time, next_set_to */
 
5118
  assert_cancel_old_question_param(1, 3, 2, 1);
 
5119
}
 
5120
 
 
5121
static void test_cancel_old_question_2_1_3(__attribute__((unused))
 
5122
                                           test_fixture *fixture,
 
5123
                                           __attribute__((unused))
 
5124
                                           gconstpointer user_data){
 
5125
  /* next_queue_run 2,
 
5126
     cancellation should happen because time has come,
 
5127
     next_queue_run should be unchanged */
 
5128
  /* next_queue_run, notafter, current_time, next_set_to */
 
5129
  assert_cancel_old_question_param(2, 1, 3, 2);
 
5130
}
 
5131
 
 
5132
static void test_cancel_old_question_2_3_1(__attribute__((unused))
 
5133
                                           test_fixture *fixture,
 
5134
                                           __attribute__((unused))
 
5135
                                           gconstpointer user_data){
 
5136
  /* If next_queue_run is set,
 
5137
     and current_time is not yet notafter or greater,
 
5138
     and notafter is larger than next_queue_run
 
5139
     next_queue_run should be unchanged */
 
5140
  /* next_queue_run, notafter, current_time, next_set_to */
 
5141
  assert_cancel_old_question_param(2, 3, 1, 2);
 
5142
}
 
5143
 
 
5144
static void test_cancel_old_question_3_1_2(__attribute__((unused))
 
5145
                                           test_fixture *fixture,
 
5146
                                           __attribute__((unused))
 
5147
                                           gconstpointer user_data){
 
5148
  /* next_queue_run 3,
 
5149
     cancellation should happen because time has come,
 
5150
     next_queue_run should be unchanged */
 
5151
  /* next_queue_run, notafter, current_time, next_set_to */
 
5152
  assert_cancel_old_question_param(3, 1, 2, 3);
 
5153
}
 
5154
 
 
5155
static void test_cancel_old_question_3_2_1(__attribute__((unused))
 
5156
                                           test_fixture *fixture,
 
5157
                                           __attribute__((unused))
 
5158
                                           gconstpointer user_data){
 
5159
  /* If next_queue_run is set,
 
5160
     and current_time is not yet notafter or greater,
 
5161
     and notafter is smaller than next_queue_run
 
5162
     update value of next_queue_run to value of notafter */
 
5163
  /* next_queue_run, notafter, current_time, next_set_to */
 
5164
  assert_cancel_old_question_param(3, 2, 1, 2);
 
5165
}
 
5166
 
 
5167
static void
 
5168
test_connect_question_socket_name_too_long(__attribute__((unused))
 
5169
                                           test_fixture *fixture,
 
5170
                                           __attribute__((unused))
 
5171
                                           gconstpointer user_data){
 
5172
  __attribute__((cleanup(cleanup_close)))
 
5173
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
5174
  g_assert_cmpint(epoll_fd, >=, 0);
 
5175
  const char question_filename[] = "/nonexistent/question";
 
5176
  __attribute__((cleanup(string_set_clear)))
 
5177
    string_set cancelled_filenames = {};
 
5178
  __attribute__((cleanup(cleanup_queue)))
 
5179
    task_queue *queue = create_queue();
 
5180
  g_assert_nonnull(queue);
 
5181
  __attribute__((cleanup(cleanup_string)))
 
5182
    char *tempdir = make_temporary_directory();
 
5183
  g_assert_nonnull(tempdir);
 
5184
  struct sockaddr_un unix_socket = { .sun_family=AF_LOCAL };
 
5185
  char socket_name[sizeof(unix_socket.sun_path)];
 
5186
  memset(socket_name, 'x', sizeof(socket_name));
 
5187
  socket_name[sizeof(socket_name)-1] = '\0';
 
5188
  char *filename = NULL;
 
5189
  g_assert_cmpint(asprintf(&filename, "%s/%s", tempdir, socket_name),
 
5190
                  >, 0);
 
5191
  g_assert_nonnull(filename);
 
5192
 
 
5193
  task_context task = {
 
5194
    .func=connect_question_socket,
 
5195
    .question_filename=strdup(question_filename),
 
5196
    .epoll_fd=epoll_fd,
 
5197
    .password=(buffer[]){{}},
 
5198
    .filename=filename,
 
5199
    .cancelled_filenames=&cancelled_filenames,
 
5200
    .mandos_client_exited=(bool[]){false},
 
5201
    .password_is_read=(bool[]){false},
 
5202
    .current_time=(mono_microsecs[]){0},
 
5203
  };
 
5204
  g_assert_nonnull(task.question_filename);
 
5205
  run_task_with_stderr_to_dev_null(task, queue);
 
5206
 
 
5207
  g_assert_true(string_set_contains(cancelled_filenames,
 
5208
                                    question_filename));
 
5209
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
5210
  g_assert_true(queue->next_run == 0);
 
5211
 
 
5212
  g_assert_cmpint(rmdir(tempdir), ==, 0);
 
5213
}
 
5214
 
 
5215
static
 
5216
void test_connect_question_socket_connect_fail(__attribute__((unused))
 
5217
                                               test_fixture *fixture,
 
5218
                                               __attribute__((unused))
 
5219
                                               gconstpointer
 
5220
                                               user_data){
 
5221
  __attribute__((cleanup(cleanup_close)))
 
5222
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
5223
  g_assert_cmpint(epoll_fd, >=, 0);
 
5224
  const char question_filename[] = "/nonexistent/question";
 
5225
  __attribute__((cleanup(string_set_clear)))
 
5226
    string_set cancelled_filenames = {};
 
5227
  const mono_microsecs current_time = 3;
 
5228
  __attribute__((cleanup(cleanup_queue)))
 
5229
    task_queue *queue = create_queue();
 
5230
  g_assert_nonnull(queue);
 
5231
  __attribute__((cleanup(cleanup_string)))
 
5232
    char *tempdir = make_temporary_directory();
 
5233
  g_assert_nonnull(tempdir);
 
5234
  char socket_name[] = "nonexistent";
 
5235
  char *filename = NULL;
 
5236
  g_assert_cmpint(asprintf(&filename, "%s/%s", tempdir, socket_name),
 
5237
                  >, 0);
 
5238
  g_assert_nonnull(filename);
 
5239
 
 
5240
  task_context task = {
 
5241
    .func=connect_question_socket,
 
5242
    .question_filename=strdup(question_filename),
 
5243
    .epoll_fd=epoll_fd,
 
5244
    .password=(buffer[]){{}},
 
5245
    .filename=filename,
 
5246
    .cancelled_filenames=&cancelled_filenames,
 
5247
    .mandos_client_exited=(bool[]){false},
 
5248
    .password_is_read=(bool[]){false},
 
5249
    .current_time=&current_time,
 
5250
  };
 
5251
  g_assert_nonnull(task.question_filename);
 
5252
  run_task_with_stderr_to_dev_null(task, queue);
 
5253
 
 
5254
  g_assert_nonnull(find_matching_task(queue, task));
 
5255
 
 
5256
  g_assert_false(string_set_contains(cancelled_filenames,
 
5257
                                     question_filename));
 
5258
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
 
5259
  g_assert_true(queue->next_run == 1000000 + current_time);
 
5260
 
 
5261
  g_assert_cmpint(rmdir(tempdir), ==, 0);
 
5262
}
 
5263
 
 
5264
static
 
5265
void test_connect_question_socket_bad_epoll(__attribute__((unused))
 
5266
                                            test_fixture *fixture,
 
5267
                                            __attribute__((unused))
 
5268
                                            gconstpointer user_data){
 
5269
  __attribute__((cleanup(cleanup_close)))
 
5270
    const int epoll_fd = open("/dev/null", O_WRONLY | O_CLOEXEC);
 
5271
  __attribute__((cleanup(cleanup_string)))
 
5272
    char *const question_filename = strdup("/nonexistent/question");
 
5273
  g_assert_nonnull(question_filename);
 
5274
  __attribute__((cleanup(string_set_clear)))
 
5275
    string_set cancelled_filenames = {};
 
5276
  const mono_microsecs current_time = 5;
 
5277
  __attribute__((cleanup(cleanup_queue)))
 
5278
    task_queue *queue = create_queue();
 
5279
  g_assert_nonnull(queue);
 
5280
  __attribute__((cleanup(cleanup_string)))
 
5281
    char *tempdir = make_temporary_directory();
 
5282
  g_assert_nonnull(tempdir);
 
5283
  __attribute__((cleanup(cleanup_close)))
 
5284
    const int sock_fd = socket(PF_LOCAL, SOCK_DGRAM
 
5285
                               | SOCK_NONBLOCK | SOCK_CLOEXEC, 0);
 
5286
  g_assert_cmpint(sock_fd, >=, 0);
 
5287
  struct sockaddr_un sock_name = { .sun_family=AF_LOCAL };
 
5288
  const char socket_name[] = "socket_name";
 
5289
  __attribute__((cleanup(cleanup_string)))
 
5290
    char *filename = NULL;
 
5291
  g_assert_cmpint(asprintf(&filename, "%s/%s", tempdir, socket_name),
 
5292
                  >, 0);
 
5293
  g_assert_nonnull(filename);
 
5294
  g_assert_cmpint((int)strlen(filename), <,
 
5295
                  (int)sizeof(sock_name.sun_path));
 
5296
  strncpy(sock_name.sun_path, filename, sizeof(sock_name.sun_path));
 
5297
  sock_name.sun_path[sizeof(sock_name.sun_path)-1] = '\0';
 
5298
  g_assert_cmpint((int)bind(sock_fd, (struct sockaddr *)&sock_name,
 
5299
                            (socklen_t)SUN_LEN(&sock_name)), >=, 0);
 
5300
  task_context task = {
 
5301
    .func=connect_question_socket,
 
5302
    .question_filename=strdup(question_filename),
 
5303
    .epoll_fd=epoll_fd,
 
5304
    .password=(buffer[]){{}},
 
5305
    .filename=strdup(filename),
 
5306
    .cancelled_filenames=&cancelled_filenames,
 
5307
    .mandos_client_exited=(bool[]){false},
 
5308
    .password_is_read=(bool[]){false},
 
5309
    .current_time=&current_time,
 
5310
  };
 
5311
  g_assert_nonnull(task.question_filename);
 
5312
  run_task_with_stderr_to_dev_null(task, queue);
 
5313
 
 
5314
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
 
5315
  const task_context *const added_task
 
5316
    = find_matching_task(queue, task);
 
5317
  g_assert_nonnull(added_task);
 
5318
  g_assert_true(queue->next_run == 1000000 + current_time);
 
5319
 
 
5320
  g_assert_cmpint(unlink(filename), ==, 0);
 
5321
  g_assert_cmpint(rmdir(tempdir), ==, 0);
 
5322
}
 
5323
 
 
5324
static
 
5325
void test_connect_question_socket_usable(__attribute__((unused))
 
5326
                                         test_fixture *fixture,
 
5327
                                         __attribute__((unused))
 
5328
                                         gconstpointer user_data){
 
5329
  __attribute__((cleanup(cleanup_close)))
 
5330
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
5331
  g_assert_cmpint(epoll_fd, >=, 0);
 
5332
  __attribute__((cleanup(cleanup_string)))
 
5333
    char *const question_filename = strdup("/nonexistent/question");
 
5334
  g_assert_nonnull(question_filename);
 
5335
  __attribute__((cleanup(string_set_clear)))
 
5336
    string_set cancelled_filenames = {};
 
5337
  buffer password = {};
 
5338
  bool mandos_client_exited = false;
 
5339
  bool password_is_read = false;
 
5340
  const mono_microsecs current_time = 0;
 
5341
  __attribute__((cleanup(cleanup_queue)))
 
5342
    task_queue *queue = create_queue();
 
5343
  g_assert_nonnull(queue);
 
5344
  __attribute__((cleanup(cleanup_string)))
 
5345
    char *tempdir = make_temporary_directory();
 
5346
  g_assert_nonnull(tempdir);
 
5347
  __attribute__((cleanup(cleanup_close)))
 
5348
    const int sock_fd = socket(PF_LOCAL, SOCK_DGRAM
 
5349
                               | SOCK_NONBLOCK | SOCK_CLOEXEC, 0);
 
5350
  g_assert_cmpint(sock_fd, >=, 0);
 
5351
  struct sockaddr_un sock_name = { .sun_family=AF_LOCAL };
 
5352
  const char socket_name[] = "socket_name";
 
5353
  __attribute__((cleanup(cleanup_string)))
 
5354
    char *filename = NULL;
 
5355
  g_assert_cmpint(asprintf(&filename, "%s/%s", tempdir, socket_name),
 
5356
                  >, 0);
 
5357
  g_assert_nonnull(filename);
 
5358
  g_assert_cmpint((int)strlen(filename), <,
 
5359
                  (int)sizeof(sock_name.sun_path));
 
5360
  strncpy(sock_name.sun_path, filename, sizeof(sock_name.sun_path));
 
5361
  sock_name.sun_path[sizeof(sock_name.sun_path)-1] = '\0';
 
5362
  g_assert_cmpint((int)bind(sock_fd, (struct sockaddr *)&sock_name,
 
5363
                            (socklen_t)SUN_LEN(&sock_name)), >=, 0);
 
5364
  task_context task = {
 
5365
    .func=connect_question_socket,
 
5366
    .question_filename=strdup(question_filename),
 
5367
    .epoll_fd=epoll_fd,
 
5368
    .password=&password,
 
5369
    .filename=strdup(filename),
 
5370
    .cancelled_filenames=&cancelled_filenames,
 
5371
    .mandos_client_exited=&mandos_client_exited,
 
5372
    .password_is_read=&password_is_read,
 
5373
    .current_time=&current_time,
 
5374
  };
 
5375
  g_assert_nonnull(task.question_filename);
 
5376
  task.func(task, queue);
 
5377
 
 
5378
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
 
5379
  const task_context *const added_task
 
5380
    = find_matching_task(queue, (task_context){
 
5381
        .func=send_password_to_socket,
 
5382
        .question_filename=question_filename,
 
5383
        .filename=filename,
 
5384
        .epoll_fd=epoll_fd,
 
5385
        .password=&password,
 
5386
        .cancelled_filenames=&cancelled_filenames,
 
5387
        .mandos_client_exited=&mandos_client_exited,
 
5388
        .password_is_read=&password_is_read,
 
5389
        .current_time=&current_time,
 
5390
      });
 
5391
  g_assert_nonnull(added_task);
 
5392
  g_assert_cmpint(added_task->fd, >, 0);
 
5393
 
 
5394
  g_assert_true(epoll_set_contains(epoll_fd, added_task->fd,
 
5395
                                   EPOLLOUT));
 
5396
 
 
5397
  const int fd = added_task->fd;
 
5398
  g_assert_cmpint(fd, >, 0);
 
5399
  g_assert_true(fd_has_cloexec_and_nonblock(fd));
 
5400
 
 
5401
  /* write to fd */
 
5402
  char write_data[PIPE_BUF];
 
5403
  {
 
5404
    /* Construct test password buffer */
 
5405
    /* Start with + since that is what the real procotol uses */
 
5406
    write_data[0] = '+';
 
5407
    /* Set a special character at string end just to mark the end */
 
5408
    write_data[sizeof(write_data)-2] = 'y';
 
5409
    /* Set NUL at buffer end, as suggested by the protocol */
 
5410
    write_data[sizeof(write_data)-1] = '\0';
 
5411
    /* Fill rest of password with 'x' */
 
5412
    memset(write_data+1, 'x', sizeof(write_data)-3);
 
5413
    g_assert_cmpint((int)send(fd, write_data, sizeof(write_data),
 
5414
                              MSG_NOSIGNAL), ==, sizeof(write_data));
 
5415
  }
 
5416
 
 
5417
  /* read from sock_fd */
 
5418
  char read_data[sizeof(write_data)];
 
5419
  g_assert_cmpint((int)read(sock_fd, read_data, sizeof(read_data)),
 
5420
                  ==, sizeof(read_data));
 
5421
 
 
5422
  g_assert_true(memcmp(write_data, read_data, sizeof(write_data))
 
5423
                == 0);
 
5424
 
 
5425
  /* writing to sock_fd should fail */
 
5426
  g_assert_cmpint(send(sock_fd, write_data, sizeof(write_data),
 
5427
                       MSG_NOSIGNAL), <, 0);
 
5428
 
 
5429
  /* reading from fd should fail */
 
5430
  g_assert_cmpint((int)recv(fd, read_data, sizeof(read_data),
 
5431
                            MSG_NOSIGNAL), <, 0);
 
5432
 
 
5433
  g_assert_cmpint(unlink(filename), ==, 0);
 
5434
  g_assert_cmpint(rmdir(tempdir), ==, 0);
 
5435
}
 
5436
 
 
5437
static void
 
5438
test_send_password_to_socket_client_not_exited(__attribute__((unused))
 
5439
                                               test_fixture *fixture,
 
5440
                                               __attribute__((unused))
 
5441
                                               gconstpointer
 
5442
                                               user_data){
 
5443
  __attribute__((cleanup(cleanup_close)))
 
5444
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
5445
  g_assert_cmpint(epoll_fd, >=, 0);
 
5446
  __attribute__((cleanup(cleanup_string)))
 
5447
    char *const question_filename = strdup("/nonexistent/question");
 
5448
  g_assert_nonnull(question_filename);
 
5449
  __attribute__((cleanup(cleanup_string)))
 
5450
    char *const filename = strdup("/nonexistent/socket");
 
5451
  g_assert_nonnull(filename);
 
5452
  __attribute__((cleanup(string_set_clear)))
 
5453
    string_set cancelled_filenames = {};
 
5454
  buffer password = {};
 
5455
  bool password_is_read = true;
 
5456
  __attribute__((cleanup(cleanup_queue)))
 
5457
    task_queue *queue = create_queue();
 
5458
  g_assert_nonnull(queue);
 
5459
  int socketfds[2];
 
5460
  g_assert_cmpint(socketpair(PF_LOCAL, SOCK_DGRAM
 
5461
                             | SOCK_NONBLOCK | SOCK_CLOEXEC, 0,
 
5462
                             socketfds), ==, 0);
 
5463
  __attribute__((cleanup(cleanup_close)))
 
5464
    const int read_socket = socketfds[0];
 
5465
  const int write_socket = socketfds[1];
 
5466
  task_context task = {
 
5467
    .func=send_password_to_socket,
 
5468
    .question_filename=strdup(question_filename),
 
5469
    .filename=strdup(filename),
 
5470
    .epoll_fd=epoll_fd,
 
5471
    .fd=write_socket,
 
5472
    .password=&password,
 
5473
    .cancelled_filenames=&cancelled_filenames,
 
5474
    .mandos_client_exited=(bool[]){false},
 
5475
    .password_is_read=&password_is_read,
 
5476
    .current_time=(mono_microsecs[]){0},
 
5477
  };
 
5478
  g_assert_nonnull(task.question_filename);
 
5479
 
 
5480
  task.func(task, queue);
 
5481
 
 
5482
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
 
5483
 
 
5484
  const task_context *const added_task
 
5485
    = find_matching_task(queue, task);
 
5486
  g_assert_nonnull(added_task);
 
5487
  g_assert_cmpuint((unsigned int)password.length, ==, 0);
 
5488
  g_assert_true(password_is_read);
 
5489
 
 
5490
  g_assert_cmpint(added_task->fd, >, 0);
 
5491
  g_assert_true(epoll_set_contains(epoll_fd, added_task->fd,
 
5492
                                   EPOLLOUT));
 
5493
}
 
5494
 
 
5495
static void
 
5496
test_send_password_to_socket_password_not_read(__attribute__((unused))
 
5497
                                               test_fixture *fixture,
 
5498
                                               __attribute__((unused))
 
5499
                                               gconstpointer
 
5500
                                               user_data){
 
5501
  __attribute__((cleanup(cleanup_close)))
 
5502
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
5503
  g_assert_cmpint(epoll_fd, >=, 0);
 
5504
  __attribute__((cleanup(cleanup_string)))
 
5505
    char *const question_filename = strdup("/nonexistent/question");
 
5506
  g_assert_nonnull(question_filename);
 
5507
  __attribute__((cleanup(cleanup_string)))
 
5508
    char *const filename = strdup("/nonexistent/socket");
 
5509
  __attribute__((cleanup(string_set_clear)))
 
5510
    string_set cancelled_filenames = {};
 
5511
  buffer password = {};
 
5512
  __attribute__((cleanup(cleanup_queue)))
 
5513
    task_queue *queue = create_queue();
 
5514
  g_assert_nonnull(queue);
 
5515
  int socketfds[2];
 
5516
  g_assert_cmpint(socketpair(PF_LOCAL, SOCK_DGRAM
 
5517
                             | SOCK_NONBLOCK | SOCK_CLOEXEC, 0,
 
5518
                             socketfds), ==, 0);
 
5519
  __attribute__((cleanup(cleanup_close)))
 
5520
    const int read_socket = socketfds[0];
 
5521
  const int write_socket = socketfds[1];
 
5522
  task_context task = {
 
5523
    .func=send_password_to_socket,
 
5524
    .question_filename=strdup(question_filename),
 
5525
    .filename=strdup(filename),
 
5526
    .epoll_fd=epoll_fd,
 
5527
    .fd=write_socket,
 
5528
    .password=&password,
 
5529
    .cancelled_filenames=&cancelled_filenames,
 
5530
    .mandos_client_exited=(bool[]){false},
 
5531
    .password_is_read=(bool[]){false},
 
5532
    .current_time=(mono_microsecs[]){0},
 
5533
  };
 
5534
  g_assert_nonnull(task.question_filename);
 
5535
 
 
5536
  task.func(task, queue);
 
5537
 
 
5538
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
 
5539
 
 
5540
  const task_context *const added_task = find_matching_task(queue,
 
5541
                                                            task);
 
5542
  g_assert_nonnull(added_task);
 
5543
  g_assert_cmpuint((unsigned int)password.length, ==, 0);
 
5544
  g_assert_true(queue->next_run == 0);
 
5545
 
 
5546
  g_assert_cmpint(added_task->fd, >, 0);
 
5547
  g_assert_true(epoll_set_contains(epoll_fd, added_task->fd,
 
5548
                                   EPOLLOUT));
 
5549
}
 
5550
 
 
5551
static
 
5552
void test_send_password_to_socket_EMSGSIZE(__attribute__((unused))
 
5553
                                           test_fixture *fixture,
 
5554
                                           __attribute__((unused))
 
5555
                                           gconstpointer user_data){
 
5556
  __attribute__((cleanup(cleanup_close)))
 
5557
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
5558
  g_assert_cmpint(epoll_fd, >=, 0);
 
5559
  const char question_filename[] = "/nonexistent/question";
 
5560
  char *const filename = strdup("/nonexistent/socket");
 
5561
  __attribute__((cleanup(string_set_clear)))
 
5562
    string_set cancelled_filenames = {};
 
5563
  const size_t oversized = 1024*1024; /* Limit seems to be 212960 */
 
5564
  __attribute__((cleanup(cleanup_buffer)))
 
5565
    buffer password = {
 
5566
    .data=malloc(oversized),
 
5567
    .length=oversized,
 
5568
    .allocated=oversized,
 
5569
  };
 
5570
  g_assert_nonnull(password.data);
 
5571
  if(mlock(password.data, password.allocated) != 0){
 
5572
    g_assert_true(errno == EPERM or errno == ENOMEM);
 
5573
  }
 
5574
  /* Construct test password buffer */
 
5575
  /* Start with + since that is what the real procotol uses */
 
5576
  password.data[0] = '+';
 
5577
  /* Set a special character at string end just to mark the end */
 
5578
  password.data[oversized-3] = 'y';
 
5579
  /* Set NUL at buffer end, as suggested by the protocol */
 
5580
  password.data[oversized-2] = '\0';
 
5581
  /* Fill rest of password with 'x' */
 
5582
  memset(password.data+1, 'x', oversized-3);
 
5583
 
 
5584
  __attribute__((cleanup(cleanup_queue)))
 
5585
    task_queue *queue = create_queue();
 
5586
  g_assert_nonnull(queue);
 
5587
  int socketfds[2];
 
5588
  g_assert_cmpint(socketpair(PF_LOCAL, SOCK_DGRAM
 
5589
                             | SOCK_NONBLOCK | SOCK_CLOEXEC, 0,
 
5590
                             socketfds), ==, 0);
 
5591
  __attribute__((cleanup(cleanup_close)))
 
5592
    const int read_socket = socketfds[0];
 
5593
  __attribute__((cleanup(cleanup_close)))
 
5594
    const int write_socket = socketfds[1];
 
5595
  task_context task = {
 
5596
    .func=send_password_to_socket,
 
5597
    .question_filename=strdup(question_filename),
 
5598
    .filename=filename,
 
5599
    .epoll_fd=epoll_fd,
 
5600
    .fd=write_socket,
 
5601
    .password=&password,
 
5602
    .cancelled_filenames=&cancelled_filenames,
 
5603
    .mandos_client_exited=(bool[]){true},
 
5604
    .password_is_read=(bool[]){true},
 
5605
    .current_time=(mono_microsecs[]){0},
 
5606
  };
 
5607
  g_assert_nonnull(task.question_filename);
 
5608
 
 
5609
  run_task_with_stderr_to_dev_null(task, queue);
 
5610
 
 
5611
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
5612
  g_assert_true(string_set_contains(cancelled_filenames,
 
5613
                                    question_filename));
 
5614
}
 
5615
 
 
5616
static void test_send_password_to_socket_retry(__attribute__((unused))
 
5617
                                               test_fixture *fixture,
 
5618
                                               __attribute__((unused))
 
5619
                                               gconstpointer
 
5620
                                               user_data){
 
5621
  __attribute__((cleanup(cleanup_close)))
 
5622
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
5623
  g_assert_cmpint(epoll_fd, >=, 0);
 
5624
  __attribute__((cleanup(cleanup_string)))
 
5625
    char *const question_filename = strdup("/nonexistent/question");
 
5626
  g_assert_nonnull(question_filename);
 
5627
  __attribute__((cleanup(cleanup_string)))
 
5628
    char *const filename = strdup("/nonexistent/socket");
 
5629
  g_assert_nonnull(filename);
 
5630
  __attribute__((cleanup(string_set_clear)))
 
5631
    string_set cancelled_filenames = {};
 
5632
  __attribute__((cleanup(cleanup_buffer)))
 
5633
    buffer password = {};
 
5634
 
 
5635
  __attribute__((cleanup(cleanup_queue)))
 
5636
    task_queue *queue = create_queue();
 
5637
  g_assert_nonnull(queue);
 
5638
  int socketfds[2];
 
5639
  g_assert_cmpint(socketpair(PF_LOCAL, SOCK_DGRAM
 
5640
                             | SOCK_NONBLOCK | SOCK_CLOEXEC, 0,
 
5641
                             socketfds), ==, 0);
 
5642
  __attribute__((cleanup(cleanup_close)))
 
5643
    const int read_socket = socketfds[0];
 
5644
  const int write_socket = socketfds[1];
 
5645
  /* Close the server side socket to force ECONNRESET on client */
 
5646
  g_assert_cmpint(close(read_socket), ==, 0);
 
5647
  task_context task = {
 
5648
    .func=send_password_to_socket,
 
5649
    .question_filename=strdup(question_filename),
 
5650
    .filename=strdup(filename),
 
5651
    .epoll_fd=epoll_fd,
 
5652
    .fd=write_socket,
 
5653
    .password=&password,
 
5654
    .cancelled_filenames=&cancelled_filenames,
 
5655
    .mandos_client_exited=(bool[]){true},
 
5656
    .password_is_read=(bool[]){true},
 
5657
    .current_time=(mono_microsecs[]){0},
 
5658
  };
 
5659
  g_assert_nonnull(task.question_filename);
 
5660
 
 
5661
  task.func(task, queue);
 
5662
 
 
5663
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
 
5664
 
 
5665
  const task_context *const added_task = find_matching_task(queue,
 
5666
                                                            task);
 
5667
  g_assert_nonnull(added_task);
 
5668
  g_assert_cmpuint((unsigned int)password.length, ==, 0);
 
5669
 
 
5670
  g_assert_true(epoll_set_contains(epoll_fd, added_task->fd,
 
5671
                                   EPOLLOUT));
 
5672
}
 
5673
 
 
5674
static
 
5675
void test_send_password_to_socket_bad_epoll(__attribute__((unused))
 
5676
                                            test_fixture *fixture,
 
5677
                                            __attribute__((unused))
 
5678
                                            gconstpointer user_data){
 
5679
  __attribute__((cleanup(cleanup_close)))
 
5680
    const int epoll_fd = open("/dev/null", O_WRONLY | O_CLOEXEC);
 
5681
  __attribute__((cleanup(cleanup_string)))
 
5682
    char *const question_filename = strdup("/nonexistent/question");
 
5683
  g_assert_nonnull(question_filename);
 
5684
  __attribute__((cleanup(cleanup_string)))
 
5685
    char *const filename = strdup("/nonexistent/socket");
 
5686
  g_assert_nonnull(filename);
 
5687
  __attribute__((cleanup(string_set_clear)))
 
5688
    string_set cancelled_filenames = {};
 
5689
  __attribute__((cleanup(cleanup_buffer)))
 
5690
    buffer password = {};
 
5691
 
 
5692
  const mono_microsecs current_time = 11;
 
5693
  __attribute__((cleanup(cleanup_queue)))
 
5694
    task_queue *queue = create_queue();
 
5695
  g_assert_nonnull(queue);
 
5696
  int socketfds[2];
 
5697
  g_assert_cmpint(socketpair(PF_LOCAL, SOCK_DGRAM
 
5698
                             | SOCK_NONBLOCK | SOCK_CLOEXEC, 0,
 
5699
                             socketfds), ==, 0);
 
5700
  __attribute__((cleanup(cleanup_close)))
 
5701
    const int read_socket = socketfds[0];
 
5702
  const int write_socket = socketfds[1];
 
5703
  /* Close the server side socket to force ECONNRESET on client */
 
5704
  g_assert_cmpint(close(read_socket), ==, 0);
 
5705
  task_context task = {
 
5706
    .func=send_password_to_socket,
 
5707
    .question_filename=strdup(question_filename),
 
5708
    .filename=strdup(filename),
 
5709
    .epoll_fd=epoll_fd,
 
5710
    .fd=write_socket,
 
5711
    .password=&password,
 
5712
    .cancelled_filenames=&cancelled_filenames,
 
5713
    .mandos_client_exited=(bool[]){true},
 
5714
    .password_is_read=(bool[]){true},
 
5715
    .current_time=&current_time,
 
5716
  };
 
5717
  g_assert_nonnull(task.question_filename);
 
5718
 
 
5719
  run_task_with_stderr_to_dev_null(task, queue);
 
5720
 
 
5721
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
 
5722
 
 
5723
  const task_context *const added_task = find_matching_task(queue,
 
5724
                                                            task);
 
5725
  g_assert_nonnull(added_task);
 
5726
  g_assert_true(queue->next_run == current_time + 1000000);
 
5727
  g_assert_cmpuint((unsigned int)password.length, ==, 0);
 
5728
}
 
5729
 
 
5730
static void assert_send_password_to_socket_password(buffer password){
 
5731
  __attribute__((cleanup(cleanup_close)))
 
5732
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
5733
  g_assert_cmpint(epoll_fd, >=, 0);
 
5734
  char *const question_filename = strdup("/nonexistent/question");
 
5735
  g_assert_nonnull(question_filename);
 
5736
  char *const filename = strdup("/nonexistent/socket");
 
5737
  g_assert_nonnull(filename);
 
5738
  __attribute__((cleanup(string_set_clear)))
 
5739
    string_set cancelled_filenames = {};
 
5740
 
 
5741
  __attribute__((cleanup(cleanup_queue)))
 
5742
    task_queue *queue = create_queue();
 
5743
  g_assert_nonnull(queue);
 
5744
  int socketfds[2];
 
5745
  g_assert_cmpint(socketpair(PF_LOCAL, SOCK_DGRAM
 
5746
                             | SOCK_NONBLOCK | SOCK_CLOEXEC, 0,
 
5747
                             socketfds), ==, 0);
 
5748
  __attribute__((cleanup(cleanup_close)))
 
5749
    const int read_socket = socketfds[0];
 
5750
  const int write_socket = socketfds[1];
 
5751
  task_context task = {
 
5752
    .func=send_password_to_socket,
 
5753
    .question_filename=question_filename,
 
5754
    .filename=filename,
 
5755
    .epoll_fd=epoll_fd,
 
5756
    .fd=write_socket,
 
5757
    .password=&password,
 
5758
    .cancelled_filenames=&cancelled_filenames,
 
5759
    .mandos_client_exited=(bool[]){true},
 
5760
    .password_is_read=(bool[]){true},
 
5761
    .current_time=(mono_microsecs[]){0},
 
5762
  };
 
5763
 
 
5764
  char *expected_written_data = malloc(password.length + 2);
 
5765
  g_assert_nonnull(expected_written_data);
 
5766
  expected_written_data[0] = '+';
 
5767
  expected_written_data[password.length + 1] = '\0';
 
5768
  if(password.length > 0){
 
5769
    g_assert_nonnull(password.data);
 
5770
    memcpy(expected_written_data + 1, password.data, password.length);
 
5771
  }
 
5772
 
 
5773
  task.func(task, queue);
 
5774
 
 
5775
  char buf[PIPE_BUF];
 
5776
  g_assert_cmpint((int)read(read_socket, buf, PIPE_BUF), ==,
 
5777
                  (int)(password.length + 2));
 
5778
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
5779
 
 
5780
  g_assert_true(memcmp(expected_written_data, buf,
 
5781
                       password.length + 2) == 0);
 
5782
 
 
5783
  g_assert_true(epoll_set_does_not_contain(epoll_fd, write_socket));
 
5784
 
 
5785
  free(expected_written_data);
 
5786
}
 
5787
 
 
5788
static void
 
5789
test_send_password_to_socket_null_password(__attribute__((unused))
 
5790
                                           test_fixture *fixture,
 
5791
                                           __attribute__((unused))
 
5792
                                           gconstpointer user_data){
 
5793
  __attribute__((cleanup(cleanup_buffer)))
 
5794
    buffer password = {};
 
5795
  assert_send_password_to_socket_password(password);
 
5796
}
 
5797
 
 
5798
static void
 
5799
test_send_password_to_socket_empty_password(__attribute__((unused))
 
5800
                                            test_fixture *fixture,
 
5801
                                            __attribute__((unused))
 
5802
                                            gconstpointer user_data){
 
5803
  __attribute__((cleanup(cleanup_buffer)))
 
5804
    buffer password = {
 
5805
    .data=malloc(1),           /* because malloc(0) may return NULL */
 
5806
    .length=0,
 
5807
    .allocated=0,               /* deliberate lie */
 
5808
  };
 
5809
  g_assert_nonnull(password.data);
 
5810
  assert_send_password_to_socket_password(password);
 
5811
}
 
5812
 
 
5813
static void
 
5814
test_send_password_to_socket_empty_str_pass(__attribute__((unused))
 
5815
                                            test_fixture *fixture,
 
5816
                                            __attribute__((unused))
 
5817
                                            gconstpointer user_data){
 
5818
  __attribute__((cleanup(cleanup_buffer)))
 
5819
    buffer password = {
 
5820
    .data=strdup(""),
 
5821
    .length=0,
 
5822
    .allocated=1,
 
5823
  };
 
5824
  if(mlock(password.data, password.allocated) != 0){
 
5825
    g_assert_true(errno == EPERM or errno == ENOMEM);
 
5826
  }
 
5827
  assert_send_password_to_socket_password(password);
 
5828
}
 
5829
 
 
5830
static void
 
5831
test_send_password_to_socket_text_password(__attribute__((unused))
 
5832
                                           test_fixture *fixture,
 
5833
                                           __attribute__((unused))
 
5834
                                           gconstpointer user_data){
 
5835
  const char dummy_test_password[] = "dummy test password";
 
5836
  __attribute__((cleanup(cleanup_buffer)))
 
5837
    buffer password = {
 
5838
    .data = strdup(dummy_test_password),
 
5839
    .length = strlen(dummy_test_password),
 
5840
    .allocated = sizeof(dummy_test_password),
 
5841
  };
 
5842
  if(mlock(password.data, password.allocated) != 0){
 
5843
    g_assert_true(errno == EPERM or errno == ENOMEM);
 
5844
  }
 
5845
  assert_send_password_to_socket_password(password);
 
5846
}
 
5847
 
 
5848
static void
 
5849
test_send_password_to_socket_binary_password(__attribute__((unused))
 
5850
                                             test_fixture *fixture,
 
5851
                                             __attribute__((unused))
 
5852
                                             gconstpointer user_data){
 
5853
  __attribute__((cleanup(cleanup_buffer)))
 
5854
    buffer password = {
 
5855
    .data=malloc(255),
 
5856
    .length=255,
 
5857
    .allocated=255,
 
5858
  };
 
5859
  g_assert_nonnull(password.data);
 
5860
  if(mlock(password.data, password.allocated) != 0){
 
5861
    g_assert_true(errno == EPERM or errno == ENOMEM);
 
5862
  }
 
5863
  char c = 1;                   /* Start at 1, avoiding NUL */
 
5864
  for(int i=0; i < 255; i++){
 
5865
    password.data[i] = c++;
 
5866
  }
 
5867
  assert_send_password_to_socket_password(password);
 
5868
}
 
5869
 
 
5870
static void
 
5871
test_send_password_to_socket_nuls_in_password(__attribute__((unused))
 
5872
                                              test_fixture *fixture,
 
5873
                                              __attribute__((unused))
 
5874
                                              gconstpointer
 
5875
                                              user_data){
 
5876
  char test_password[] = {'\0', 'a', '\0', 'b', '\0', 'c', '\0'};
 
5877
  __attribute__((cleanup(cleanup_buffer)))
 
5878
    buffer password = {
 
5879
    .data=malloc(sizeof(test_password)),
 
5880
    .length=sizeof(test_password),
 
5881
    .allocated=sizeof(test_password),
 
5882
  };
 
5883
  g_assert_nonnull(password.data);
 
5884
  if(mlock(password.data, password.allocated) !=0){
 
5885
    g_assert_true(errno == EPERM or errno == ENOMEM);
 
5886
  }
 
5887
  memcpy(password.data, test_password, password.allocated);
 
5888
  assert_send_password_to_socket_password(password);
 
5889
}
 
5890
 
 
5891
static bool assert_add_existing_questions_to_devnull(task_queue
 
5892
                                                     *const,
 
5893
                                                     const int,
 
5894
                                                     buffer *const,
 
5895
                                                     string_set *,
 
5896
                                                     const
 
5897
                                                     mono_microsecs
 
5898
                                                     *const,
 
5899
                                                     bool *const,
 
5900
                                                     bool *const,
 
5901
                                                     const char
 
5902
                                                     *const);
 
5903
 
 
5904
static void test_add_existing_questions_ENOENT(__attribute__((unused))
 
5905
                                               test_fixture *fixture,
 
5906
                                               __attribute__((unused))
 
5907
                                               gconstpointer
 
5908
                                               user_data){
 
5909
  __attribute__((cleanup(cleanup_queue)))
 
5910
    task_queue *queue = create_queue();
 
5911
  g_assert_nonnull(queue);
 
5912
  __attribute__((cleanup(cleanup_close)))
 
5913
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
5914
  g_assert_cmpint(epoll_fd, >=, 0);
 
5915
  __attribute__((cleanup(string_set_clear)))
 
5916
    string_set cancelled_filenames = {};
 
5917
 
 
5918
  g_assert_false(assert_add_existing_questions_to_devnull
 
5919
                 (queue,
 
5920
                  epoll_fd,
 
5921
                  (buffer[]){{}}, /* password */
 
5922
                  &cancelled_filenames,
 
5923
                  (mono_microsecs[]){0}, /* current_time */
 
5924
                  (bool[]){false},       /* mandos_client_exited */
 
5925
                  (bool[]){false},       /* password_is_read */
 
5926
                  "/nonexistent"));      /* dirname */
 
5927
 
 
5928
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
5929
}
 
5930
 
 
5931
static
 
5932
bool assert_add_existing_questions_to_devnull(task_queue
 
5933
                                              *const queue,
 
5934
                                              const int
 
5935
                                              epoll_fd,
 
5936
                                              buffer *const
 
5937
                                              password,
 
5938
                                              string_set
 
5939
                                              *cancelled_filenames,
 
5940
                                              const mono_microsecs
 
5941
                                              *const current_time,
 
5942
                                              bool *const
 
5943
                                              mandos_client_exited,
 
5944
                                              bool *const
 
5945
                                              password_is_read,
 
5946
                                              const char *const
 
5947
                                              dirname){
 
5948
  __attribute__((cleanup(cleanup_close)))
 
5949
    const int devnull_fd = open("/dev/null", O_WRONLY | O_CLOEXEC);
 
5950
  g_assert_cmpint(devnull_fd, >=, 0);
 
5951
  __attribute__((cleanup(cleanup_close)))
 
5952
    const int real_stderr_fd = dup(STDERR_FILENO);
 
5953
  g_assert_cmpint(real_stderr_fd, >=, 0);
 
5954
  dup2(devnull_fd, STDERR_FILENO);
 
5955
  const bool ret = add_existing_questions(queue, epoll_fd, password,
 
5956
                                          cancelled_filenames,
 
5957
                                          current_time,
 
5958
                                          mandos_client_exited,
 
5959
                                          password_is_read, dirname);
 
5960
  dup2(real_stderr_fd, STDERR_FILENO);
 
5961
  return ret;
 
5962
}
 
5963
 
 
5964
static
 
5965
void test_add_existing_questions_no_questions(__attribute__((unused))
 
5966
                                              test_fixture *fixture,
 
5967
                                              __attribute__((unused))
 
5968
                                              gconstpointer
 
5969
                                              user_data){
 
5970
  __attribute__((cleanup(cleanup_queue)))
 
5971
    task_queue *queue = create_queue();
 
5972
  g_assert_nonnull(queue);
 
5973
  __attribute__((cleanup(cleanup_close)))
 
5974
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
5975
  g_assert_cmpint(epoll_fd, >=, 0);
 
5976
  __attribute__((cleanup(string_set_clear)))
 
5977
    string_set cancelled_filenames = {};
 
5978
  __attribute__((cleanup(cleanup_string)))
 
5979
    char *tempdir = make_temporary_directory();
 
5980
  g_assert_nonnull(tempdir);
 
5981
 
 
5982
  g_assert_false(assert_add_existing_questions_to_devnull
 
5983
                 (queue,
 
5984
                  epoll_fd,
 
5985
                  (buffer[]){{}}, /* password */
 
5986
                  &cancelled_filenames,
 
5987
                  (mono_microsecs[]){0}, /* current_time */
 
5988
                  (bool[]){false},       /* mandos_client_exited */
 
5989
                  (bool[]){false},       /* password_is_read */
 
5990
                  tempdir));
 
5991
 
 
5992
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
5993
 
 
5994
  g_assert_cmpint(rmdir(tempdir), ==, 0);
 
5995
}
 
5996
 
 
5997
static char *make_question_file_in_directory(const char *const);
 
5998
 
 
5999
static
 
6000
void test_add_existing_questions_one_question(__attribute__((unused))
 
6001
                                              test_fixture *fixture,
 
6002
                                              __attribute__((unused))
 
6003
                                              gconstpointer
 
6004
                                              user_data){
 
6005
  __attribute__((cleanup(cleanup_queue)))
 
6006
    task_queue *queue = create_queue();
 
6007
  g_assert_nonnull(queue);
 
6008
  __attribute__((cleanup(cleanup_close)))
 
6009
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
6010
  g_assert_cmpint(epoll_fd, >=, 0);
 
6011
  __attribute__((cleanup(cleanup_buffer)))
 
6012
    buffer password = {};
 
6013
  __attribute__((cleanup(string_set_clear)))
 
6014
    string_set cancelled_filenames = {};
 
6015
  const mono_microsecs current_time = 0;
 
6016
  bool mandos_client_exited = false;
 
6017
  bool password_is_read = false;
 
6018
  __attribute__((cleanup(cleanup_string)))
 
6019
    char *tempdir = make_temporary_directory();
 
6020
  g_assert_nonnull(tempdir);
 
6021
  __attribute__((cleanup(cleanup_string)))
 
6022
    char *question_filename
 
6023
    = make_question_file_in_directory(tempdir);
 
6024
  g_assert_nonnull(question_filename);
 
6025
 
 
6026
  g_assert_true(assert_add_existing_questions_to_devnull
 
6027
                (queue,
 
6028
                 epoll_fd,
 
6029
                 &password,
 
6030
                 &cancelled_filenames,
 
6031
                 &current_time,
 
6032
                 &mandos_client_exited,
 
6033
                 &password_is_read,
 
6034
                 tempdir));
 
6035
 
 
6036
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
 
6037
 
 
6038
  g_assert_nonnull(find_matching_task(queue, (task_context){
 
6039
        .func=open_and_parse_question,
 
6040
        .epoll_fd=epoll_fd,
 
6041
        .filename=question_filename,
 
6042
        .question_filename=question_filename,
 
6043
        .password=&password,
 
6044
        .cancelled_filenames=&cancelled_filenames,
 
6045
        .current_time=&current_time,
 
6046
        .mandos_client_exited=&mandos_client_exited,
 
6047
        .password_is_read=&password_is_read,
 
6048
      }));
 
6049
 
 
6050
  g_assert_true(queue->next_run == 1);
 
6051
 
 
6052
  g_assert_cmpint(unlink(question_filename), ==, 0);
 
6053
  g_assert_cmpint(rmdir(tempdir), ==, 0);
 
6054
}
 
6055
 
 
6056
static char *make_question_file_in_directory(const char
 
6057
                                             *const dir){
 
6058
  return make_temporary_prefixed_file_in_directory("ask.", dir);
 
6059
}
 
6060
 
 
6061
static
 
6062
void test_add_existing_questions_two_questions(__attribute__((unused))
 
6063
                                               test_fixture *fixture,
 
6064
                                               __attribute__((unused))
 
6065
                                               gconstpointer
 
6066
                                               user_data){
 
6067
  __attribute__((cleanup(cleanup_queue)))
 
6068
    task_queue *queue = create_queue();
 
6069
  g_assert_nonnull(queue);
 
6070
  __attribute__((cleanup(cleanup_close)))
 
6071
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
6072
  g_assert_cmpint(epoll_fd, >=, 0);
 
6073
  __attribute__((cleanup(cleanup_buffer)))
 
6074
    buffer password = {};
 
6075
  __attribute__((cleanup(string_set_clear)))
 
6076
    string_set cancelled_filenames = {};
 
6077
  const mono_microsecs current_time = 0;
 
6078
  bool mandos_client_exited = false;
 
6079
  bool password_is_read = false;
 
6080
  __attribute__((cleanup(cleanup_string)))
 
6081
    char *tempdir = make_temporary_directory();
 
6082
  g_assert_nonnull(tempdir);
 
6083
  __attribute__((cleanup(cleanup_string)))
 
6084
    char *question_filename1
 
6085
    = make_question_file_in_directory(tempdir);
 
6086
  g_assert_nonnull(question_filename1);
 
6087
  __attribute__((cleanup(cleanup_string)))
 
6088
    char *question_filename2
 
6089
    = make_question_file_in_directory(tempdir);
 
6090
  g_assert_nonnull(question_filename2);
 
6091
 
 
6092
  g_assert_true(assert_add_existing_questions_to_devnull
 
6093
                (queue,
 
6094
                 epoll_fd,
 
6095
                 &password,
 
6096
                 &cancelled_filenames,
 
6097
                 &current_time,
 
6098
                 &mandos_client_exited,
 
6099
                 &password_is_read,
 
6100
                 tempdir));
 
6101
 
 
6102
  g_assert_cmpuint((unsigned int)queue->length, ==, 2);
 
6103
 
 
6104
  g_assert_true(queue->next_run == 1);
 
6105
 
 
6106
  __attribute__((cleanup(string_set_clear)))
 
6107
    string_set seen_questions = {};
 
6108
 
 
6109
  bool queue_contains_question_opener(char *const question_filename){
 
6110
    return(find_matching_task(queue, (task_context){
 
6111
          .func=open_and_parse_question,
 
6112
          .epoll_fd=epoll_fd,
 
6113
          .question_filename=question_filename,
 
6114
          .password=&password,
 
6115
          .cancelled_filenames=&cancelled_filenames,
 
6116
          .current_time=&current_time,
 
6117
          .mandos_client_exited=&mandos_client_exited,
 
6118
          .password_is_read=&password_is_read,
 
6119
        }) != NULL);
 
6120
  }
 
6121
 
 
6122
  g_assert_true(queue_contains_question_opener(question_filename1));
 
6123
  g_assert_true(queue_contains_question_opener(question_filename2));
 
6124
 
 
6125
  g_assert_true(queue->next_run == 1);
 
6126
 
 
6127
  g_assert_cmpint(unlink(question_filename1), ==, 0);
 
6128
  g_assert_cmpint(unlink(question_filename2), ==, 0);
 
6129
  g_assert_cmpint(rmdir(tempdir), ==, 0);
 
6130
}
 
6131
 
 
6132
static void
 
6133
test_add_existing_questions_non_questions(__attribute__((unused))
 
6134
                                          test_fixture *fixture,
 
6135
                                          __attribute__((unused))
 
6136
                                          gconstpointer user_data){
 
6137
  __attribute__((cleanup(cleanup_queue)))
 
6138
    task_queue *queue = create_queue();
 
6139
  g_assert_nonnull(queue);
 
6140
  __attribute__((cleanup(cleanup_close)))
 
6141
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
6142
  g_assert_cmpint(epoll_fd, >=, 0);
 
6143
  __attribute__((cleanup(string_set_clear)))
 
6144
    string_set cancelled_filenames = {};
 
6145
  __attribute__((cleanup(cleanup_string)))
 
6146
    char *tempdir = make_temporary_directory();
 
6147
  g_assert_nonnull(tempdir);
 
6148
  __attribute__((cleanup(cleanup_string)))
 
6149
    char *question_filename1
 
6150
    = make_temporary_file_in_directory(tempdir);
 
6151
  g_assert_nonnull(question_filename1);
 
6152
  __attribute__((cleanup(cleanup_string)))
 
6153
    char *question_filename2
 
6154
    = make_temporary_file_in_directory(tempdir);
 
6155
  g_assert_nonnull(question_filename2);
 
6156
 
 
6157
  g_assert_false(assert_add_existing_questions_to_devnull
 
6158
                 (queue,
 
6159
                  epoll_fd,
 
6160
                  (buffer[]){{}}, /* password */
 
6161
                  &cancelled_filenames,
 
6162
                  (mono_microsecs[]){0}, /* current_time */
 
6163
                  (bool[]){false},       /* mandos_client_exited */
 
6164
                  (bool[]){false},       /* password_is_read */
 
6165
                  tempdir));
 
6166
 
 
6167
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
6168
 
 
6169
  g_assert_cmpint(unlink(question_filename1), ==, 0);
 
6170
  g_assert_cmpint(unlink(question_filename2), ==, 0);
 
6171
  g_assert_cmpint(rmdir(tempdir), ==, 0);
 
6172
}
 
6173
 
 
6174
static void
 
6175
test_add_existing_questions_both_types(__attribute__((unused))
 
6176
                                       test_fixture *fixture,
 
6177
                                       __attribute__((unused))
 
6178
                                       gconstpointer user_data){
 
6179
  __attribute__((cleanup(cleanup_queue)))
 
6180
    task_queue *queue = create_queue();
 
6181
  g_assert_nonnull(queue);
 
6182
  __attribute__((cleanup(cleanup_close)))
 
6183
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
6184
  g_assert_cmpint(epoll_fd, >=, 0);
 
6185
  __attribute__((cleanup(cleanup_buffer)))
 
6186
    buffer password = {};
 
6187
  __attribute__((cleanup(string_set_clear)))
 
6188
    string_set cancelled_filenames = {};
 
6189
  const mono_microsecs current_time = 0;
 
6190
  bool mandos_client_exited = false;
 
6191
  bool password_is_read = false;
 
6192
  __attribute__((cleanup(cleanup_string)))
 
6193
    char *tempdir = make_temporary_directory();
 
6194
  g_assert_nonnull(tempdir);
 
6195
  __attribute__((cleanup(cleanup_string)))
 
6196
    char *tempfilename1 = make_temporary_file_in_directory(tempdir);
 
6197
  g_assert_nonnull(tempfilename1);
 
6198
  __attribute__((cleanup(cleanup_string)))
 
6199
    char *tempfilename2 = make_temporary_file_in_directory(tempdir);
 
6200
  g_assert_nonnull(tempfilename2);
 
6201
  __attribute__((cleanup(cleanup_string)))
 
6202
    char *question_filename
 
6203
    = make_question_file_in_directory(tempdir);
 
6204
  g_assert_nonnull(question_filename);
 
6205
 
 
6206
  g_assert_true(assert_add_existing_questions_to_devnull
 
6207
                (queue,
 
6208
                 epoll_fd,
 
6209
                 &password,
 
6210
                 &cancelled_filenames,
 
6211
                 &current_time,
 
6212
                 &mandos_client_exited,
 
6213
                 &password_is_read,
 
6214
                 tempdir));
 
6215
 
 
6216
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
 
6217
 
 
6218
  g_assert_nonnull(find_matching_task(queue, (task_context){
 
6219
        .func=open_and_parse_question,
 
6220
        .epoll_fd=epoll_fd,
 
6221
        .filename=question_filename,
 
6222
        .question_filename=question_filename,
 
6223
        .password=&password,
 
6224
        .cancelled_filenames=&cancelled_filenames,
 
6225
        .current_time=&current_time,
 
6226
        .mandos_client_exited=&mandos_client_exited,
 
6227
        .password_is_read=&password_is_read,
 
6228
      }));
 
6229
 
 
6230
  g_assert_true(queue->next_run == 1);
 
6231
 
 
6232
  g_assert_cmpint(unlink(tempfilename1), ==, 0);
 
6233
  g_assert_cmpint(unlink(tempfilename2), ==, 0);
 
6234
  g_assert_cmpint(unlink(question_filename), ==, 0);
 
6235
  g_assert_cmpint(rmdir(tempdir), ==, 0);
 
6236
}
 
6237
 
 
6238
static void test_wait_for_event_timeout(__attribute__((unused))
 
6239
                                        test_fixture *fixture,
 
6240
                                        __attribute__((unused))
 
6241
                                        gconstpointer user_data){
 
6242
  __attribute__((cleanup(cleanup_close)))
 
6243
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
6244
  g_assert_cmpint(epoll_fd, >=, 0);
 
6245
 
 
6246
  g_assert_true(wait_for_event(epoll_fd, 1, 0));
 
6247
}
 
6248
 
 
6249
static void test_wait_for_event_event(__attribute__((unused))
 
6250
                                      test_fixture *fixture,
 
6251
                                      __attribute__((unused))
 
6252
                                      gconstpointer user_data){
 
6253
  __attribute__((cleanup(cleanup_close)))
 
6254
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
6255
  g_assert_cmpint(epoll_fd, >=, 0);
 
6256
  int pipefds[2];
 
6257
  g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);
 
6258
  __attribute__((cleanup(cleanup_close)))
 
6259
    const int read_pipe = pipefds[0];
 
6260
  __attribute__((cleanup(cleanup_close)))
 
6261
    const int write_pipe = pipefds[1];
 
6262
  g_assert_cmpint(epoll_ctl(epoll_fd, EPOLL_CTL_ADD, read_pipe,
 
6263
                            &(struct epoll_event)
 
6264
                            { .events=EPOLLIN | EPOLLRDHUP }), ==, 0);
 
6265
  g_assert_cmpint((int)write(write_pipe, "x", 1), ==, 1);
 
6266
 
 
6267
  g_assert_true(wait_for_event(epoll_fd, 0, 0));
 
6268
}
 
6269
 
 
6270
static void test_wait_for_event_sigchld(test_fixture *fixture,
 
6271
                                        __attribute__((unused))
 
6272
                                        gconstpointer user_data){
 
6273
  const pid_t pid = fork();
 
6274
  if(pid == 0){         /* Child */
 
6275
    if(not restore_signal_handler(&fixture->orig_sigaction)){
 
6276
      _exit(EXIT_FAILURE);
 
6277
    }
 
6278
    if(not restore_sigmask(&fixture->orig_sigmask)){
 
6279
      _exit(EXIT_FAILURE);
 
6280
    }
 
6281
    exit(EXIT_SUCCESS);
 
6282
  }
 
6283
  g_assert_true(pid != -1);
 
6284
  __attribute__((cleanup(cleanup_close)))
 
6285
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
6286
  g_assert_cmpint(epoll_fd, >=, 0);
 
6287
 
 
6288
  g_assert_true(wait_for_event(epoll_fd, 0, 0));
 
6289
 
 
6290
  int status;
 
6291
  g_assert_true(waitpid(pid, &status, 0) == pid);
 
6292
  g_assert_true(WIFEXITED(status));
 
6293
  g_assert_cmpint(WEXITSTATUS(status), ==, EXIT_SUCCESS);
 
6294
}
 
6295
 
 
6296
static void test_run_queue_zeroes_next_run(__attribute__((unused))
 
6297
                                           test_fixture *fixture,
 
6298
                                           __attribute__((unused))
 
6299
                                           gconstpointer user_data){
 
6300
  __attribute__((cleanup(cleanup_queue)))
 
6301
    task_queue *queue = create_queue();
 
6302
  g_assert_nonnull(queue);
 
6303
  queue->next_run = 1;
 
6304
  __attribute__((cleanup(cleanup_close)))
 
6305
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
6306
  __attribute__((cleanup(string_set_clear)))
 
6307
    string_set cancelled_filenames = {};
 
6308
  bool quit_now = false;
 
6309
 
 
6310
  g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));
 
6311
  g_assert_false(quit_now);
 
6312
  g_assert_cmpuint((unsigned int)queue->next_run, ==, 0);
 
6313
}
 
6314
 
 
6315
static
 
6316
void test_run_queue_clears_cancelled_filenames(__attribute__((unused))
 
6317
                                               test_fixture *fixture,
 
6318
                                               __attribute__((unused))
 
6319
                                               gconstpointer
 
6320
                                               user_data){
 
6321
  __attribute__((cleanup(cleanup_queue)))
 
6322
    task_queue *queue = create_queue();
 
6323
  g_assert_nonnull(queue);
 
6324
  __attribute__((cleanup(string_set_clear)))
 
6325
    string_set cancelled_filenames = {};
 
6326
  bool quit_now = false;
 
6327
  const char question_filename[] = "/nonexistent/question_filename";
 
6328
  g_assert_true(string_set_add(&cancelled_filenames,
 
6329
                               question_filename));
 
6330
 
 
6331
  g_assert_true(add_to_queue(queue,
 
6332
                             (task_context){ .func=dummy_func }));
 
6333
 
 
6334
  g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));
 
6335
  g_assert_false(quit_now);
 
6336
  g_assert_cmpuint((unsigned int)(queue->length), ==, 0);
 
6337
  g_assert_false(string_set_contains(cancelled_filenames,
 
6338
                                     question_filename));
 
6339
}
 
6340
 
 
6341
static
 
6342
void test_run_queue_skips_cancelled_filenames(__attribute__((unused))
 
6343
                                              test_fixture *fixture,
 
6344
                                              __attribute__((unused))
 
6345
                                              gconstpointer
 
6346
                                              user_data){
 
6347
  __attribute__((cleanup(cleanup_queue)))
 
6348
    task_queue *queue = create_queue();
 
6349
  g_assert_nonnull(queue);
 
6350
  __attribute__((cleanup(string_set_clear)))
 
6351
    string_set cancelled_filenames = {};
 
6352
  bool quit_now = false;
 
6353
  int pipefds[2];
 
6354
  g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);
 
6355
  __attribute__((cleanup(cleanup_close)))
 
6356
    const int read_pipe = pipefds[0];
 
6357
  g_assert_cmpint(close(pipefds[1]), ==, 0);
 
6358
  const char question_filename[] = "/nonexistent/question_filename";
 
6359
  g_assert_true(string_set_add(&cancelled_filenames,
 
6360
                               question_filename));
 
6361
  __attribute__((nonnull))
 
6362
    void quit_func(const task_context task,
 
6363
                   __attribute__((unused)) task_queue *const q){
 
6364
    g_assert_nonnull(task.quit_now);
 
6365
    *task.quit_now = true;
 
6366
  }
 
6367
  task_context task = {
 
6368
    .func=quit_func,
 
6369
    .question_filename=strdup(question_filename),
 
6370
    .quit_now=&quit_now,
 
6371
    .fd=read_pipe,
 
6372
  };
 
6373
  g_assert_nonnull(task.question_filename);
 
6374
 
 
6375
  g_assert_true(add_to_queue(queue, task));
 
6376
 
 
6377
  g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));
 
6378
  g_assert_false(quit_now);
 
6379
 
 
6380
  /* read_pipe should be closed already */
 
6381
  errno = 0;
 
6382
  bool read_pipe_closed = (close(read_pipe) == -1);
 
6383
  read_pipe_closed &= (errno == EBADF);
 
6384
  g_assert_true(read_pipe_closed);
 
6385
}
 
6386
 
 
6387
static void test_run_queue_one_task(__attribute__((unused))
 
6388
                                    test_fixture *fixture,
 
6389
                                    __attribute__((unused))
 
6390
                                    gconstpointer user_data){
 
6391
  __attribute__((cleanup(cleanup_queue)))
 
6392
    task_queue *queue = create_queue();
 
6393
  g_assert_nonnull(queue);
 
6394
  __attribute__((cleanup(string_set_clear)))
 
6395
    string_set cancelled_filenames = {};
 
6396
  bool quit_now = false;
 
6397
 
 
6398
  __attribute__((nonnull))
 
6399
    void next_run_func(__attribute__((unused))
 
6400
                       const task_context task,
 
6401
                       task_queue *const q){
 
6402
    q->next_run = 1;
 
6403
  }
 
6404
 
 
6405
  task_context task = {
 
6406
    .func=next_run_func,
 
6407
  };
 
6408
  g_assert_true(add_to_queue(queue, task));
 
6409
 
 
6410
  g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));
 
6411
  g_assert_cmpuint((unsigned int)(queue->next_run), ==, 1);
 
6412
  g_assert_cmpuint((unsigned int)(queue->length), ==, 0);
 
6413
}
 
6414
 
 
6415
static void test_run_queue_two_tasks(__attribute__((unused))
 
6416
                                     test_fixture *fixture,
 
6417
                                     __attribute__((unused))
 
6418
                                     gconstpointer user_data){
 
6419
  __attribute__((cleanup(cleanup_queue)))
 
6420
    task_queue *queue = create_queue();
 
6421
  g_assert_nonnull(queue);
 
6422
  queue->next_run = 1;
 
6423
  __attribute__((cleanup(string_set_clear)))
 
6424
    string_set cancelled_filenames = {};
 
6425
  bool quit_now = false;
 
6426
  bool mandos_client_exited = false;
 
6427
 
 
6428
  __attribute__((nonnull))
 
6429
    void next_run_func(__attribute__((unused))
 
6430
                       const task_context task,
 
6431
                       task_queue *const q){
 
6432
    q->next_run = 1;
 
6433
  }
 
6434
 
 
6435
  __attribute__((nonnull))
 
6436
    void exited_func(const task_context task,
 
6437
                     __attribute__((unused)) task_queue *const q){
 
6438
    *task.mandos_client_exited = true;
 
6439
  }
 
6440
 
 
6441
  task_context task1 = {
 
6442
    .func=next_run_func,
 
6443
  };
 
6444
  g_assert_true(add_to_queue(queue, task1));
 
6445
 
 
6446
  task_context task2 = {
 
6447
    .func=exited_func,
 
6448
    .mandos_client_exited=&mandos_client_exited,
 
6449
  };
 
6450
  g_assert_true(add_to_queue(queue, task2));
 
6451
 
 
6452
  g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));
 
6453
  g_assert_false(quit_now);
 
6454
  g_assert_cmpuint((unsigned int)(queue->next_run), ==, 1);
 
6455
  g_assert_true(mandos_client_exited);
 
6456
  g_assert_cmpuint((unsigned int)(queue->length), ==, 0);
 
6457
}
 
6458
 
 
6459
static void test_run_queue_two_tasks_quit(__attribute__((unused))
 
6460
                                          test_fixture *fixture,
 
6461
                                          __attribute__((unused))
 
6462
                                          gconstpointer user_data){
 
6463
  __attribute__((cleanup(cleanup_queue)))
 
6464
    task_queue *queue = create_queue();
 
6465
  g_assert_nonnull(queue);
 
6466
  __attribute__((cleanup(string_set_clear)))
 
6467
    string_set cancelled_filenames = {};
 
6468
  bool quit_now = false;
 
6469
  bool mandos_client_exited = false;
 
6470
  bool password_is_read = false;
 
6471
 
 
6472
  __attribute__((nonnull))
 
6473
    void set_exited_func(const task_context task,
 
6474
                         __attribute__((unused)) task_queue *const q){
 
6475
    *task.mandos_client_exited = true;
 
6476
    *task.quit_now = true;
 
6477
  }
 
6478
  task_context task1 = {
 
6479
    .func=set_exited_func,
 
6480
    .quit_now=&quit_now,
 
6481
    .mandos_client_exited=&mandos_client_exited,
 
6482
  };
 
6483
  g_assert_true(add_to_queue(queue, task1));
 
6484
 
 
6485
  __attribute__((nonnull))
 
6486
    void set_read_func(const task_context task,
 
6487
                       __attribute__((unused)) task_queue *const q){
 
6488
    *task.quit_now = true;
 
6489
    *task.password_is_read = true;
 
6490
  }
 
6491
  task_context task2 = {
 
6492
    .func=set_read_func,
 
6493
    .quit_now=&quit_now,
 
6494
    .password_is_read=&password_is_read,
 
6495
  };
 
6496
  g_assert_true(add_to_queue(queue, task2));
 
6497
 
 
6498
  g_assert_false(run_queue(&queue, &cancelled_filenames, &quit_now));
 
6499
  g_assert_true(quit_now);
 
6500
  g_assert_true(mandos_client_exited xor password_is_read);
 
6501
  g_assert_cmpuint((unsigned int)(queue->length), ==, 0);
 
6502
}
 
6503
 
 
6504
static void test_run_queue_two_tasks_cleanup(__attribute__((unused))
 
6505
                                             test_fixture *fixture,
 
6506
                                             __attribute__((unused))
 
6507
                                             gconstpointer user_data){
 
6508
  __attribute__((cleanup(cleanup_queue)))
 
6509
    task_queue *queue = create_queue();
 
6510
  g_assert_nonnull(queue);
 
6511
  __attribute__((cleanup(string_set_clear)))
 
6512
    string_set cancelled_filenames = {};
 
6513
  int pipefds[2];
 
6514
  g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);
 
6515
  __attribute__((cleanup(cleanup_close)))
 
6516
    const int read_pipe = pipefds[0];
 
6517
  __attribute__((cleanup(cleanup_close)))
 
6518
    const int write_pipe = pipefds[1];
 
6519
  bool quit_now = false;
 
6520
 
 
6521
  __attribute__((nonnull))
 
6522
    void read_func(const task_context task,
 
6523
                   __attribute__((unused)) task_queue *const q){
 
6524
    *task.quit_now = true;
 
6525
  }
 
6526
  task_context task1 = {
 
6527
    .func=read_func,
 
6528
    .quit_now=&quit_now,
 
6529
    .fd=read_pipe,
 
6530
  };
 
6531
  g_assert_true(add_to_queue(queue, task1));
 
6532
 
 
6533
  __attribute__((nonnull))
 
6534
    void write_func(const task_context task,
 
6535
                    __attribute__((unused)) task_queue *const q){
 
6536
    *task.quit_now = true;
 
6537
  }
 
6538
  task_context task2 = {
 
6539
    .func=write_func,
 
6540
    .quit_now=&quit_now,
 
6541
    .fd=write_pipe,
 
6542
  };
 
6543
  g_assert_true(add_to_queue(queue, task2));
 
6544
 
 
6545
  g_assert_false(run_queue(&queue, &cancelled_filenames, &quit_now));
 
6546
  g_assert_true(quit_now);
 
6547
 
 
6548
  /* Either read_pipe or write_pipe should be closed already */
 
6549
  errno = 0;
 
6550
  bool close_read_pipe = (close(read_pipe) == -1);
 
6551
  close_read_pipe &= (errno == EBADF);
 
6552
  errno = 0;
 
6553
  bool close_write_pipe = (close(write_pipe) == -1);
 
6554
  close_write_pipe &= (errno == EBADF);
 
6555
  g_assert_true(close_read_pipe xor close_write_pipe);
 
6556
  g_assert_cmpuint((unsigned int)(queue->length), ==, 0);
 
6557
}
 
6558
 
 
6559
static void test_setup_signal_handler(__attribute__((unused))
 
6560
                                      test_fixture *fixture,
 
6561
                                      __attribute__((unused))
 
6562
                                      gconstpointer user_data){
 
6563
  /* Save current SIGCHLD action, whatever it is */
 
6564
  struct sigaction expected_sigchld_action;
 
6565
  g_assert_cmpint(sigaction(SIGCHLD, NULL, &expected_sigchld_action),
 
6566
                  ==, 0);
 
6567
 
 
6568
  /* Act; i.e. run the setup_signal_handler() function */
 
6569
  struct sigaction actual_old_sigchld_action;
 
6570
  g_assert_true(setup_signal_handler(&actual_old_sigchld_action));
 
6571
 
 
6572
  /* Check that the function correctly set "actual_old_sigchld_action"
 
6573
     to the same values as the previously saved
 
6574
     "expected_sigchld_action" */
 
6575
  /* Check member sa_handler */
 
6576
  g_assert_true(actual_old_sigchld_action.sa_handler
 
6577
                == expected_sigchld_action.sa_handler);
 
6578
  /* Check member sa_mask */
 
6579
  for(int signum = 1; signum < NSIG; signum++){
 
6580
    const int expected_old_block_state
 
6581
      = sigismember(&expected_sigchld_action.sa_mask, signum);
 
6582
    g_assert_cmpint(expected_old_block_state, >=, 0);
 
6583
    const int actual_old_block_state
 
6584
      = sigismember(&actual_old_sigchld_action.sa_mask, signum);
 
6585
    g_assert_cmpint(actual_old_block_state, >=, 0);
 
6586
    g_assert_cmpint(actual_old_block_state,
 
6587
                    ==, expected_old_block_state);
 
6588
  }
 
6589
  /* Check member sa_flags */
 
6590
  g_assert_true((actual_old_sigchld_action.sa_flags
 
6591
                 & (SA_NOCLDSTOP | SA_ONSTACK | SA_RESTART))
 
6592
                == (expected_sigchld_action.sa_flags
 
6593
                    & (SA_NOCLDSTOP | SA_ONSTACK | SA_RESTART)));
 
6594
 
 
6595
  /* Retrieve the current signal handler for SIGCHLD as set by
 
6596
     setup_signal_handler() */
 
6597
  struct sigaction actual_new_sigchld_action;
 
6598
  g_assert_cmpint(sigaction(SIGCHLD, NULL,
 
6599
                            &actual_new_sigchld_action), ==, 0);
 
6600
  /* Check that the signal handler (member sa_handler) is correctly
 
6601
     set to the "handle_sigchld" function */
 
6602
  g_assert_true(actual_new_sigchld_action.sa_handler != SIG_DFL);
 
6603
  g_assert_true(actual_new_sigchld_action.sa_handler != SIG_IGN);
 
6604
  g_assert_true(actual_new_sigchld_action.sa_handler
 
6605
                == handle_sigchld);
 
6606
  /* Check (in member sa_mask) that at least a handful of signals are
 
6607
     actually blocked during the signal handler */
 
6608
  for(int signum = 1; signum < NSIG; signum++){
 
6609
    int actual_new_block_state;
 
6610
    switch(signum){
 
6611
    case SIGTERM:
 
6612
    case SIGINT:
 
6613
    case SIGQUIT:
 
6614
    case SIGHUP:
 
6615
      actual_new_block_state
 
6616
        = sigismember(&actual_new_sigchld_action.sa_mask, signum);
 
6617
      g_assert_cmpint(actual_new_block_state, ==, 1);
 
6618
      continue;
 
6619
    case SIGKILL:               /* non-blockable */
 
6620
    case SIGSTOP:               /* non-blockable */
 
6621
    case SIGCHLD:               /* always blocked */
 
6622
    default:
 
6623
      continue;
 
6624
    }
 
6625
  }
 
6626
  /* Check member sa_flags */
 
6627
  g_assert_true((actual_new_sigchld_action.sa_flags
 
6628
                 & (SA_NOCLDSTOP | SA_ONSTACK | SA_RESTART))
 
6629
                == (SA_NOCLDSTOP | SA_RESTART));
 
6630
 
 
6631
  /* Restore signal handler */
 
6632
  g_assert_cmpint(sigaction(SIGCHLD, &expected_sigchld_action, NULL),
 
6633
                  ==, 0);
 
6634
}
 
6635
 
 
6636
static void test_restore_signal_handler(__attribute__((unused))
 
6637
                                        test_fixture *fixture,
 
6638
                                        __attribute__((unused))
 
6639
                                        gconstpointer user_data){
 
6640
  /* Save current SIGCHLD action, whatever it is */
 
6641
  struct sigaction expected_sigchld_action;
 
6642
  g_assert_cmpint(sigaction(SIGCHLD, NULL, &expected_sigchld_action),
 
6643
                  ==, 0);
 
6644
  /* Since we haven't established a signal handler yet, there should
 
6645
     not be one established.  But another test may have relied on
 
6646
     restore_signal_handler() to restore the signal handler, and if
 
6647
     restore_signal_handler() is buggy (which we should be prepared
 
6648
     for in this test) the signal handler may not have been restored
 
6649
     properly; check for this: */
 
6650
  g_assert_true(expected_sigchld_action.sa_handler != handle_sigchld);
 
6651
 
 
6652
  /* Establish a signal handler */
 
6653
  struct sigaction sigchld_action = {
 
6654
    .sa_handler=handle_sigchld,
 
6655
    .sa_flags=SA_RESTART | SA_NOCLDSTOP,
 
6656
  };
 
6657
  g_assert_cmpint(sigfillset(&sigchld_action.sa_mask), ==, 0);
 
6658
  g_assert_cmpint(sigaction(SIGCHLD, &sigchld_action, NULL), ==, 0);
 
6659
 
 
6660
  /* Act; i.e. run the restore_signal_handler() function */
 
6661
  g_assert_true(restore_signal_handler(&expected_sigchld_action));
 
6662
 
 
6663
  /* Retrieve the restored signal handler data */
 
6664
  struct sigaction actual_restored_sigchld_action;
 
6665
  g_assert_cmpint(sigaction(SIGCHLD, NULL,
 
6666
                            &actual_restored_sigchld_action), ==, 0);
 
6667
 
 
6668
  /* Check that the function correctly restored the signal action, as
 
6669
     saved in "actual_restored_sigchld_action", to the same values as
 
6670
     the previously saved "expected_sigchld_action" */
 
6671
  /* Check member sa_handler */
 
6672
  g_assert_true(actual_restored_sigchld_action.sa_handler
 
6673
                == expected_sigchld_action.sa_handler);
 
6674
  /* Check member sa_mask */
 
6675
  for(int signum = 1; signum < NSIG; signum++){
 
6676
    const int expected_old_block_state
 
6677
      = sigismember(&expected_sigchld_action.sa_mask, signum);
 
6678
    g_assert_cmpint(expected_old_block_state, >=, 0);
 
6679
    const int actual_restored_block_state
 
6680
      = sigismember(&actual_restored_sigchld_action.sa_mask, signum);
 
6681
    g_assert_cmpint(actual_restored_block_state, >=, 0);
 
6682
    g_assert_cmpint(actual_restored_block_state,
 
6683
                    ==, expected_old_block_state);
 
6684
  }
 
6685
  /* Check member sa_flags */
 
6686
  g_assert_true((actual_restored_sigchld_action.sa_flags
 
6687
                 & (SA_NOCLDSTOP | SA_ONSTACK | SA_RESTART))
 
6688
                == (expected_sigchld_action.sa_flags
 
6689
                    & (SA_NOCLDSTOP | SA_ONSTACK | SA_RESTART)));
 
6690
}
 
6691
 
 
6692
static void test_block_sigchld(__attribute__((unused))
 
6693
                               test_fixture *fixture,
 
6694
                               __attribute__((unused))
 
6695
                               gconstpointer user_data){
 
6696
  /* Save original signal mask */
 
6697
  sigset_t expected_sigmask;
 
6698
  g_assert_cmpint(pthread_sigmask(-1, NULL, &expected_sigmask),
 
6699
                  ==, 0);
 
6700
 
 
6701
  /* Make sure SIGCHLD is unblocked for this test */
 
6702
  sigset_t sigchld_sigmask;
 
6703
  g_assert_cmpint(sigemptyset(&sigchld_sigmask), ==, 0);
 
6704
  g_assert_cmpint(sigaddset(&sigchld_sigmask, SIGCHLD), ==, 0);
 
6705
  g_assert_cmpint(pthread_sigmask(SIG_UNBLOCK, &sigchld_sigmask,
 
6706
                                  NULL), ==, 0);
 
6707
 
 
6708
  /* Act; i.e. run the block_sigchld() function */
 
6709
  sigset_t actual_old_sigmask;
 
6710
  g_assert_true(block_sigchld(&actual_old_sigmask));
 
6711
 
 
6712
  /* Check the actual_old_sigmask; it should be the same as the
 
6713
     previously saved signal mask "expected_sigmask". */
 
6714
  for(int signum = 1; signum < NSIG; signum++){
 
6715
    const int expected_old_block_state
 
6716
      = sigismember(&expected_sigmask, signum);
 
6717
    g_assert_cmpint(expected_old_block_state, >=, 0);
 
6718
    const int actual_old_block_state
 
6719
      = sigismember(&actual_old_sigmask, signum);
 
6720
    g_assert_cmpint(actual_old_block_state, >=, 0);
 
6721
    g_assert_cmpint(actual_old_block_state,
 
6722
                    ==, expected_old_block_state);
 
6723
  }
 
6724
 
 
6725
  /* Retrieve the newly set signal mask */
 
6726
  sigset_t actual_sigmask;
 
6727
  g_assert_cmpint(pthread_sigmask(-1, NULL, &actual_sigmask), ==, 0);
 
6728
 
 
6729
  /* SIGCHLD should be blocked */
 
6730
  g_assert_cmpint(sigismember(&actual_sigmask, SIGCHLD), ==, 1);
 
6731
 
 
6732
  /* Restore signal mask */
 
6733
  g_assert_cmpint(pthread_sigmask(SIG_SETMASK, &expected_sigmask,
 
6734
                                  NULL), ==, 0);
 
6735
}
 
6736
 
 
6737
static void test_restore_sigmask(__attribute__((unused))
 
6738
                                 test_fixture *fixture,
 
6739
                                 __attribute__((unused))
 
6740
                                 gconstpointer user_data){
 
6741
  /* Save original signal mask */
 
6742
  sigset_t orig_sigmask;
 
6743
  g_assert_cmpint(pthread_sigmask(-1, NULL, &orig_sigmask), ==, 0);
 
6744
 
 
6745
  /* Make sure SIGCHLD is blocked for this test */
 
6746
  sigset_t sigchld_sigmask;
 
6747
  g_assert_cmpint(sigemptyset(&sigchld_sigmask), ==, 0);
 
6748
  g_assert_cmpint(sigaddset(&sigchld_sigmask, SIGCHLD), ==, 0);
 
6749
  g_assert_cmpint(pthread_sigmask(SIG_BLOCK, &sigchld_sigmask,
 
6750
                                  NULL), ==, 0);
 
6751
 
 
6752
  /* Act; i.e. run the restore_sigmask() function */
 
6753
  g_assert_true(restore_sigmask(&orig_sigmask));
 
6754
 
 
6755
  /* Retrieve the newly restored signal mask */
 
6756
  sigset_t restored_sigmask;
 
6757
  g_assert_cmpint(pthread_sigmask(-1, NULL, &restored_sigmask),
 
6758
                  ==, 0);
 
6759
 
 
6760
  /* Check the restored_sigmask; it should be the same as the
 
6761
     previously saved signal mask "orig_sigmask". */
 
6762
  for(int signum = 1; signum < NSIG; signum++){
 
6763
    const int orig_block_state = sigismember(&orig_sigmask, signum);
 
6764
    g_assert_cmpint(orig_block_state, >=, 0);
 
6765
    const int restored_block_state = sigismember(&restored_sigmask,
 
6766
                                                 signum);
 
6767
    g_assert_cmpint(restored_block_state, >=, 0);
 
6768
    g_assert_cmpint(restored_block_state, ==, orig_block_state);
 
6769
  }
 
6770
 
 
6771
  /* Restore signal mask */
 
6772
  g_assert_cmpint(pthread_sigmask(SIG_SETMASK, &orig_sigmask,
 
6773
                                  NULL), ==, 0);
 
6774
}
 
6775
 
 
6776
static void test_parse_arguments_noargs(__attribute__((unused))
 
6777
                                        test_fixture *fixture,
 
6778
                                        __attribute__((unused))
 
6779
                                        gconstpointer user_data){
 
6780
  char *argv[] = {
 
6781
    strdup("prgname"),
 
6782
    NULL };
 
6783
  const int argc = (sizeof(argv) / sizeof(char *)) - 1;
 
6784
 
 
6785
  char *agent_directory = NULL;
 
6786
  char *helper_directory = NULL;
 
6787
  uid_t user = 0;
 
6788
  gid_t group = 0;
 
6789
  char *mandos_argz = NULL;
 
6790
  size_t mandos_argz_length = 0;
 
6791
 
 
6792
  g_assert_true(parse_arguments(argc, argv, false, &agent_directory,
 
6793
                                &helper_directory, &user, &group,
 
6794
                                &mandos_argz, &mandos_argz_length));
 
6795
  g_assert_null(agent_directory);
 
6796
  g_assert_null(helper_directory);
 
6797
  g_assert_true(user == 0);
 
6798
  g_assert_true(group == 0);
 
6799
  g_assert_null(mandos_argz);
 
6800
  g_assert_true(mandos_argz_length == 0);
 
6801
 
 
6802
  for(char **arg = argv; *arg != NULL; arg++){
 
6803
    free(*arg);
 
6804
  }
 
6805
}
 
6806
 
 
6807
__attribute__((nonnull))
 
6808
static bool parse_arguments_devnull(int argc, char *argv[],
 
6809
                                    const bool exit_failure,
 
6810
                                    char **agent_directory,
 
6811
                                    char **helper_directory,
 
6812
                                    uid_t *const user,
 
6813
                                    gid_t *const group,
 
6814
                                    char **mandos_argz,
 
6815
                                    size_t *mandos_argz_length){
 
6816
 
 
6817
  FILE *real_stderr = stderr;
 
6818
  FILE *devnull = fopen("/dev/null", "we");
 
6819
  g_assert_nonnull(devnull);
 
6820
  stderr = devnull;
 
6821
 
 
6822
  const bool ret = parse_arguments(argc, argv, exit_failure,
 
6823
                                   agent_directory,
 
6824
                                   helper_directory, user, group,
 
6825
                                   mandos_argz, mandos_argz_length);
 
6826
  const error_t saved_errno = errno;
 
6827
 
 
6828
  stderr = real_stderr;
 
6829
  g_assert_cmpint(fclose(devnull), ==, 0);
 
6830
 
 
6831
  errno = saved_errno;
 
6832
 
 
6833
  return ret;
 
6834
}
 
6835
 
 
6836
static void test_parse_arguments_invalid(__attribute__((unused))
 
6837
                                         test_fixture *fixture,
 
6838
                                         __attribute__((unused))
 
6839
                                         gconstpointer user_data){
 
6840
  char *argv[] = {
 
6841
    strdup("prgname"),
 
6842
    strdup("--invalid"),
 
6843
    NULL };
 
6844
  const int argc = (sizeof(argv) / sizeof(char *)) - 1;
 
6845
 
 
6846
  char *agent_directory = NULL;
 
6847
  char *helper_directory = NULL;
 
6848
  uid_t user = 0;
 
6849
  gid_t group = 0;
 
6850
  char *mandos_argz = NULL;
 
6851
  size_t mandos_argz_length = 0;
 
6852
 
 
6853
  g_assert_false(parse_arguments_devnull(argc, argv, false,
 
6854
                                         &agent_directory,
 
6855
                                         &helper_directory, &user,
 
6856
                                         &group, &mandos_argz,
 
6857
                                         &mandos_argz_length));
 
6858
 
 
6859
  g_assert_true(errno == EINVAL);
 
6860
  g_assert_null(agent_directory);
 
6861
  g_assert_null(helper_directory);
 
6862
  g_assert_null(mandos_argz);
 
6863
  g_assert_true(mandos_argz_length == 0);
 
6864
 
 
6865
  for(char **arg = argv; *arg != NULL; arg++){
 
6866
    free(*arg);
 
6867
  }
 
6868
}
 
6869
 
 
6870
static void test_parse_arguments_long_dir(__attribute__((unused))
 
6871
                                          test_fixture *fixture,
 
6872
                                          __attribute__((unused))
 
6873
                                          gconstpointer user_data){
 
6874
  char *argv[] = {
 
6875
    strdup("prgname"),
 
6876
    strdup("--agent-directory"),
 
6877
    strdup("/tmp"),
 
6878
    NULL };
 
6879
  const int argc = (sizeof(argv) / sizeof(char *)) - 1;
 
6880
 
 
6881
  __attribute__((cleanup(cleanup_string)))
 
6882
    char *agent_directory = NULL;
 
6883
  char *helper_directory = NULL;
 
6884
  uid_t user = 0;
 
6885
  gid_t group = 0;
 
6886
  __attribute__((cleanup(cleanup_string)))
 
6887
    char *mandos_argz = NULL;
 
6888
  size_t mandos_argz_length = 0;
 
6889
 
 
6890
  g_assert_true(parse_arguments(argc, argv, false, &agent_directory,
 
6891
                                &helper_directory, &user, &group,
 
6892
                                &mandos_argz, &mandos_argz_length));
 
6893
 
 
6894
  g_assert_cmpstr(agent_directory, ==, "/tmp");
 
6895
  g_assert_null(helper_directory);
 
6896
  g_assert_true(user == 0);
 
6897
  g_assert_true(group == 0);
 
6898
  g_assert_null(mandos_argz);
 
6899
  g_assert_true(mandos_argz_length == 0);
 
6900
 
 
6901
  for(char **arg = argv; *arg != NULL; arg++){
 
6902
    free(*arg);
 
6903
  }
 
6904
}
 
6905
 
 
6906
static void test_parse_arguments_short_dir(__attribute__((unused))
 
6907
                                           test_fixture *fixture,
 
6908
                                           __attribute__((unused))
 
6909
                                           gconstpointer user_data){
 
6910
  char *argv[] = {
 
6911
    strdup("prgname"),
 
6912
    strdup("-d"),
 
6913
    strdup("/tmp"),
 
6914
    NULL };
 
6915
  const int argc = (sizeof(argv) / sizeof(char *)) - 1;
 
6916
 
 
6917
  __attribute__((cleanup(cleanup_string)))
 
6918
    char *agent_directory = NULL;
 
6919
  char *helper_directory = NULL;
 
6920
  uid_t user = 0;
 
6921
  gid_t group = 0;
 
6922
  __attribute__((cleanup(cleanup_string)))
 
6923
    char *mandos_argz = NULL;
 
6924
  size_t mandos_argz_length = 0;
 
6925
 
 
6926
  g_assert_true(parse_arguments(argc, argv, false, &agent_directory,
 
6927
                                &helper_directory, &user, &group,
 
6928
                                &mandos_argz, &mandos_argz_length));
 
6929
 
 
6930
  g_assert_cmpstr(agent_directory, ==, "/tmp");
 
6931
  g_assert_null(helper_directory);
 
6932
  g_assert_true(user == 0);
 
6933
  g_assert_true(group == 0);
 
6934
  g_assert_null(mandos_argz);
 
6935
  g_assert_true(mandos_argz_length == 0);
 
6936
 
 
6937
  for(char **arg = argv; *arg != NULL; arg++){
 
6938
    free(*arg);
 
6939
  }
 
6940
}
 
6941
 
 
6942
static
 
6943
void test_parse_arguments_helper_directory(__attribute__((unused))
 
6944
                                           test_fixture *fixture,
 
6945
                                           __attribute__((unused))
 
6946
                                           gconstpointer user_data){
 
6947
  char *argv[] = {
 
6948
    strdup("prgname"),
 
6949
    strdup("--helper-directory"),
 
6950
    strdup("/tmp"),
 
6951
    NULL };
 
6952
  const int argc = (sizeof(argv) / sizeof(char *)) - 1;
 
6953
 
 
6954
  char *agent_directory = NULL;
 
6955
  __attribute__((cleanup(cleanup_string)))
 
6956
    char *helper_directory = NULL;
 
6957
  uid_t user = 0;
 
6958
  gid_t group = 0;
 
6959
  __attribute__((cleanup(cleanup_string)))
 
6960
    char *mandos_argz = NULL;
 
6961
  size_t mandos_argz_length = 0;
 
6962
 
 
6963
  g_assert_true(parse_arguments(argc, argv, false, &agent_directory,
 
6964
                                &helper_directory, &user, &group,
 
6965
                                &mandos_argz, &mandos_argz_length));
 
6966
 
 
6967
  g_assert_cmpstr(helper_directory, ==, "/tmp");
 
6968
  g_assert_null(agent_directory);
 
6969
  g_assert_true(user == 0);
 
6970
  g_assert_true(group == 0);
 
6971
  g_assert_null(mandos_argz);
 
6972
  g_assert_true(mandos_argz_length == 0);
 
6973
 
 
6974
  for(char **arg = argv; *arg != NULL; arg++){
 
6975
    free(*arg);
 
6976
  }
 
6977
}
 
6978
 
 
6979
static
 
6980
void test_parse_arguments_plugin_helper_dir(__attribute__((unused))
 
6981
                                            test_fixture *fixture,
 
6982
                                            __attribute__((unused))
 
6983
                                            gconstpointer user_data){
 
6984
  char *argv[] = {
 
6985
    strdup("prgname"),
 
6986
    strdup("--plugin-helper-dir"),
 
6987
    strdup("/tmp"),
 
6988
    NULL };
 
6989
  const int argc = (sizeof(argv) / sizeof(char *)) - 1;
 
6990
 
 
6991
  char *agent_directory = NULL;
 
6992
  __attribute__((cleanup(cleanup_string)))
 
6993
    char *helper_directory = NULL;
 
6994
  uid_t user = 0;
 
6995
  gid_t group = 0;
 
6996
  __attribute__((cleanup(cleanup_string)))
 
6997
    char *mandos_argz = NULL;
 
6998
  size_t mandos_argz_length = 0;
 
6999
 
 
7000
  g_assert_true(parse_arguments(argc, argv, false, &agent_directory,
 
7001
                                &helper_directory, &user, &group,
 
7002
                                &mandos_argz, &mandos_argz_length));
 
7003
 
 
7004
  g_assert_cmpstr(helper_directory, ==, "/tmp");
 
7005
  g_assert_null(agent_directory);
 
7006
  g_assert_true(user == 0);
 
7007
  g_assert_true(group == 0);
 
7008
  g_assert_null(mandos_argz);
 
7009
  g_assert_true(mandos_argz_length == 0);
 
7010
 
 
7011
  for(char **arg = argv; *arg != NULL; arg++){
 
7012
    free(*arg);
 
7013
  }
 
7014
}
 
7015
 
 
7016
static void test_parse_arguments_user(__attribute__((unused))
 
7017
                                      test_fixture *fixture,
 
7018
                                      __attribute__((unused))
 
7019
                                      gconstpointer user_data){
 
7020
  char *argv[] = {
 
7021
    strdup("prgname"),
 
7022
    strdup("--user"),
 
7023
    strdup("1000"),
 
7024
    NULL };
 
7025
  const int argc = (sizeof(argv) / sizeof(char *)) - 1;
 
7026
 
 
7027
  char *agent_directory = NULL;
 
7028
  __attribute__((cleanup(cleanup_string)))
 
7029
    char *helper_directory = NULL;
 
7030
  uid_t user = 0;
 
7031
  gid_t group = 0;
 
7032
  __attribute__((cleanup(cleanup_string)))
 
7033
    char *mandos_argz = NULL;
 
7034
  size_t mandos_argz_length = 0;
 
7035
 
 
7036
  g_assert_true(parse_arguments(argc, argv, false, &agent_directory,
 
7037
                                &helper_directory, &user, &group,
 
7038
                                &mandos_argz, &mandos_argz_length));
 
7039
 
 
7040
  g_assert_null(helper_directory);
 
7041
  g_assert_null(agent_directory);
 
7042
  g_assert_cmpuint((unsigned int)user, ==, 1000);
 
7043
  g_assert_true(group == 0);
 
7044
  g_assert_null(mandos_argz);
 
7045
  g_assert_true(mandos_argz_length == 0);
 
7046
 
 
7047
  for(char **arg = argv; *arg != NULL; arg++){
 
7048
    free(*arg);
 
7049
  }
 
7050
}
 
7051
 
 
7052
static void test_parse_arguments_user_invalid(__attribute__((unused))
 
7053
                                              test_fixture *fixture,
 
7054
                                              __attribute__((unused))
 
7055
                                              gconstpointer
 
7056
                                              user_data){
 
7057
  char *argv[] = {
 
7058
    strdup("prgname"),
 
7059
    strdup("--user"),
 
7060
    strdup("invalid"),
 
7061
    NULL };
 
7062
  const int argc = (sizeof(argv) / sizeof(char *)) - 1;
 
7063
 
 
7064
  char *agent_directory = NULL;
 
7065
  __attribute__((cleanup(cleanup_string)))
 
7066
    char *helper_directory = NULL;
 
7067
  uid_t user = 0;
 
7068
  gid_t group = 0;
 
7069
  __attribute__((cleanup(cleanup_string)))
 
7070
    char *mandos_argz = NULL;
 
7071
  size_t mandos_argz_length = 0;
 
7072
 
 
7073
  g_assert_false(parse_arguments_devnull(argc, argv, false,
 
7074
                                         &agent_directory,
 
7075
                                         &helper_directory, &user,
 
7076
                                         &group, &mandos_argz,
 
7077
                                         &mandos_argz_length));
 
7078
 
 
7079
  g_assert_null(helper_directory);
 
7080
  g_assert_null(agent_directory);
 
7081
  g_assert_cmpuint((unsigned int)user, ==, 0);
 
7082
  g_assert_true(group == 0);
 
7083
  g_assert_null(mandos_argz);
 
7084
  g_assert_true(mandos_argz_length == 0);
 
7085
 
 
7086
  for(char **arg = argv; *arg != NULL; arg++){
 
7087
    free(*arg);
 
7088
  }
 
7089
}
 
7090
 
 
7091
static
 
7092
void test_parse_arguments_user_zero_invalid(__attribute__((unused))
 
7093
                                            test_fixture *fixture,
 
7094
                                            __attribute__((unused))
 
7095
                                            gconstpointer user_data){
 
7096
  char *argv[] = {
 
7097
    strdup("prgname"),
 
7098
    strdup("--user"),
 
7099
    strdup("0"),
 
7100
    NULL };
 
7101
  const int argc = (sizeof(argv) / sizeof(char *)) - 1;
 
7102
 
 
7103
  char *agent_directory = NULL;
 
7104
  __attribute__((cleanup(cleanup_string)))
 
7105
    char *helper_directory = NULL;
 
7106
  uid_t user = 0;
 
7107
  gid_t group = 0;
 
7108
  __attribute__((cleanup(cleanup_string)))
 
7109
    char *mandos_argz = NULL;
 
7110
  size_t mandos_argz_length = 0;
 
7111
 
 
7112
  g_assert_false(parse_arguments_devnull(argc, argv, false,
 
7113
                                         &agent_directory,
 
7114
                                         &helper_directory, &user,
 
7115
                                         &group, &mandos_argz,
 
7116
                                         &mandos_argz_length));
 
7117
 
 
7118
  g_assert_null(helper_directory);
 
7119
  g_assert_null(agent_directory);
 
7120
  g_assert_cmpuint((unsigned int)user, ==, 0);
 
7121
  g_assert_true(group == 0);
 
7122
  g_assert_null(mandos_argz);
 
7123
  g_assert_true(mandos_argz_length == 0);
 
7124
 
 
7125
  for(char **arg = argv; *arg != NULL; arg++){
 
7126
    free(*arg);
 
7127
  }
 
7128
}
 
7129
 
 
7130
static void test_parse_arguments_group(__attribute__((unused))
 
7131
                                       test_fixture *fixture,
 
7132
                                       __attribute__((unused))
 
7133
                                       gconstpointer user_data){
 
7134
  char *argv[] = {
 
7135
    strdup("prgname"),
 
7136
    strdup("--group"),
 
7137
    strdup("1000"),
 
7138
    NULL };
 
7139
  const int argc = (sizeof(argv) / sizeof(char *)) - 1;
 
7140
 
 
7141
  char *agent_directory = NULL;
 
7142
  __attribute__((cleanup(cleanup_string)))
 
7143
    char *helper_directory = NULL;
 
7144
  uid_t user = 0;
 
7145
  gid_t group = 0;
 
7146
  __attribute__((cleanup(cleanup_string)))
 
7147
    char *mandos_argz = NULL;
 
7148
  size_t mandos_argz_length = 0;
 
7149
 
 
7150
  g_assert_true(parse_arguments(argc, argv, false, &agent_directory,
 
7151
                                &helper_directory, &user, &group,
 
7152
                                &mandos_argz, &mandos_argz_length));
 
7153
 
 
7154
  g_assert_null(helper_directory);
 
7155
  g_assert_null(agent_directory);
 
7156
  g_assert_true(user == 0);
 
7157
  g_assert_cmpuint((unsigned int)group, ==, 1000);
 
7158
  g_assert_null(mandos_argz);
 
7159
  g_assert_true(mandos_argz_length == 0);
 
7160
 
 
7161
  for(char **arg = argv; *arg != NULL; arg++){
 
7162
    free(*arg);
 
7163
  }
 
7164
}
 
7165
 
 
7166
static void test_parse_arguments_group_invalid(__attribute__((unused))
 
7167
                                               test_fixture *fixture,
 
7168
                                               __attribute__((unused))
 
7169
                                               gconstpointer
 
7170
                                               user_data){
 
7171
  char *argv[] = {
 
7172
    strdup("prgname"),
 
7173
    strdup("--group"),
 
7174
    strdup("invalid"),
 
7175
    NULL };
 
7176
  const int argc = (sizeof(argv) / sizeof(char *)) - 1;
 
7177
 
 
7178
  char *agent_directory = NULL;
 
7179
  __attribute__((cleanup(cleanup_string)))
 
7180
    char *helper_directory = NULL;
 
7181
  uid_t user = 0;
 
7182
  gid_t group = 0;
 
7183
  __attribute__((cleanup(cleanup_string)))
 
7184
    char *mandos_argz = NULL;
 
7185
  size_t mandos_argz_length = 0;
 
7186
 
 
7187
  g_assert_false(parse_arguments_devnull(argc, argv, false,
 
7188
                                         &agent_directory,
 
7189
                                         &helper_directory, &user,
 
7190
                                         &group, &mandos_argz,
 
7191
                                         &mandos_argz_length));
 
7192
 
 
7193
  g_assert_null(helper_directory);
 
7194
  g_assert_null(agent_directory);
 
7195
  g_assert_true(user == 0);
 
7196
  g_assert_true(group == 0);
 
7197
  g_assert_null(mandos_argz);
 
7198
  g_assert_true(mandos_argz_length == 0);
 
7199
 
 
7200
  for(char **arg = argv; *arg != NULL; arg++){
 
7201
    free(*arg);
 
7202
  }
 
7203
}
 
7204
 
 
7205
static
 
7206
void test_parse_arguments_group_zero_invalid(__attribute__((unused))
 
7207
                                             test_fixture *fixture,
 
7208
                                             __attribute__((unused))
 
7209
                                             gconstpointer user_data){
 
7210
  char *argv[] = {
 
7211
    strdup("prgname"),
 
7212
    strdup("--group"),
 
7213
    strdup("0"),
 
7214
    NULL };
 
7215
  const int argc = (sizeof(argv) / sizeof(char *)) - 1;
 
7216
 
 
7217
  char *agent_directory = NULL;
 
7218
  __attribute__((cleanup(cleanup_string)))
 
7219
    char *helper_directory = NULL;
 
7220
  uid_t user = 0;
 
7221
  gid_t group = 0;
 
7222
  __attribute__((cleanup(cleanup_string)))
 
7223
    char *mandos_argz = NULL;
 
7224
  size_t mandos_argz_length = 0;
 
7225
 
 
7226
  g_assert_false(parse_arguments_devnull(argc, argv, false,
 
7227
                                         &agent_directory,
 
7228
                                         &helper_directory, &user,
 
7229
                                         &group, &mandos_argz,
 
7230
                                         &mandos_argz_length));
 
7231
 
 
7232
  g_assert_null(helper_directory);
 
7233
  g_assert_null(agent_directory);
 
7234
  g_assert_cmpuint((unsigned int)group, ==, 0);
 
7235
  g_assert_true(group == 0);
 
7236
  g_assert_null(mandos_argz);
 
7237
  g_assert_true(mandos_argz_length == 0);
 
7238
 
 
7239
  for(char **arg = argv; *arg != NULL; arg++){
 
7240
    free(*arg);
 
7241
  }
 
7242
}
 
7243
 
 
7244
static void test_parse_arguments_mandos_noargs(__attribute__((unused))
 
7245
                                               test_fixture *fixture,
 
7246
                                               __attribute__((unused))
 
7247
                                               gconstpointer
 
7248
                                               user_data){
 
7249
  char *argv[] = {
 
7250
    strdup("prgname"),
 
7251
    strdup("mandos-client"),
 
7252
    NULL };
 
7253
  const int argc = (sizeof(argv) / sizeof(char *)) - 1;
 
7254
 
 
7255
  __attribute__((cleanup(cleanup_string)))
 
7256
    char *agent_directory = NULL;
 
7257
  __attribute__((cleanup(cleanup_string)))
 
7258
    char *helper_directory = NULL;
 
7259
  uid_t user = 0;
 
7260
  gid_t group = 0;
 
7261
  __attribute__((cleanup(cleanup_string)))
 
7262
    char *mandos_argz = NULL;
 
7263
  size_t mandos_argz_length = 0;
 
7264
 
 
7265
  g_assert_true(parse_arguments(argc, argv, false, &agent_directory,
 
7266
                                &helper_directory, &user, &group,
 
7267
                                &mandos_argz, &mandos_argz_length));
 
7268
 
 
7269
  g_assert_null(agent_directory);
 
7270
  g_assert_null(helper_directory);
 
7271
  g_assert_true(user == 0);
 
7272
  g_assert_true(group == 0);
 
7273
  g_assert_cmpstr(mandos_argz, ==, "mandos-client");
 
7274
  g_assert_cmpuint((unsigned int)argz_count(mandos_argz,
 
7275
                                            mandos_argz_length),
 
7276
                   ==, 1);
 
7277
 
 
7278
  for(char **arg = argv; *arg != NULL; arg++){
 
7279
    free(*arg);
 
7280
  }
 
7281
}
 
7282
 
 
7283
static void test_parse_arguments_mandos_args(__attribute__((unused))
 
7284
                                             test_fixture *fixture,
 
7285
                                             __attribute__((unused))
 
7286
                                             gconstpointer user_data){
 
7287
  char *argv[] = {
 
7288
    strdup("prgname"),
 
7289
    strdup("mandos-client"),
 
7290
    strdup("one"),
 
7291
    strdup("two"),
 
7292
    strdup("three"),
 
7293
    NULL };
 
7294
  const int argc = (sizeof(argv) / sizeof(char *)) - 1;
 
7295
 
 
7296
  __attribute__((cleanup(cleanup_string)))
 
7297
    char *agent_directory = NULL;
 
7298
  __attribute__((cleanup(cleanup_string)))
 
7299
    char *helper_directory = NULL;
 
7300
  uid_t user = 0;
 
7301
  gid_t group = 0;
 
7302
  __attribute__((cleanup(cleanup_string)))
 
7303
    char *mandos_argz = NULL;
 
7304
  size_t mandos_argz_length = 0;
 
7305
 
 
7306
  g_assert_true(parse_arguments(argc, argv, false, &agent_directory,
 
7307
                                &helper_directory, &user, &group,
 
7308
                                &mandos_argz, &mandos_argz_length));
 
7309
 
 
7310
  g_assert_null(agent_directory);
 
7311
  g_assert_null(helper_directory);
 
7312
  g_assert_true(user == 0);
 
7313
  g_assert_true(group == 0);
 
7314
  char *marg = mandos_argz;
 
7315
  g_assert_cmpstr(marg, ==, "mandos-client");
 
7316
  marg = argz_next(mandos_argz, mandos_argz_length, marg);
 
7317
  g_assert_cmpstr(marg, ==, "one");
 
7318
  marg = argz_next(mandos_argz, mandos_argz_length, marg);
 
7319
  g_assert_cmpstr(marg, ==, "two");
 
7320
  marg = argz_next(mandos_argz, mandos_argz_length, marg);
 
7321
  g_assert_cmpstr(marg, ==, "three");
 
7322
  g_assert_cmpuint((unsigned int)argz_count(mandos_argz,
 
7323
                                            mandos_argz_length),
 
7324
                   ==, 4);
 
7325
 
 
7326
  for(char **arg = argv; *arg != NULL; arg++){
 
7327
    free(*arg);
 
7328
  }
 
7329
}
 
7330
 
 
7331
static void test_parse_arguments_all_args(__attribute__((unused))
 
7332
                                          test_fixture *fixture,
 
7333
                                          __attribute__((unused))
 
7334
                                          gconstpointer user_data){
 
7335
  char *argv[] = {
 
7336
    strdup("prgname"),
 
7337
    strdup("--agent-directory"),
 
7338
    strdup("/tmp"),
 
7339
    strdup("--helper-directory"),
 
7340
    strdup("/var/tmp"),
 
7341
    strdup("--user"),
 
7342
    strdup("1"),
 
7343
    strdup("--group"),
 
7344
    strdup("2"),
 
7345
    strdup("mandos-client"),
 
7346
    strdup("one"),
 
7347
    strdup("two"),
 
7348
    strdup("three"),
 
7349
    NULL };
 
7350
  const int argc = (sizeof(argv) / sizeof(char *)) - 1;
 
7351
 
 
7352
  __attribute__((cleanup(cleanup_string)))
 
7353
    char *agent_directory = NULL;
 
7354
  __attribute__((cleanup(cleanup_string)))
 
7355
    char *helper_directory = NULL;
 
7356
  uid_t user = 0;
 
7357
  gid_t group = 0;
 
7358
  __attribute__((cleanup(cleanup_string)))
 
7359
    char *mandos_argz = NULL;
 
7360
  size_t mandos_argz_length = 0;
 
7361
 
 
7362
  g_assert_true(parse_arguments(argc, argv, false, &agent_directory,
 
7363
                                &helper_directory, &user, &group,
 
7364
                                &mandos_argz, &mandos_argz_length));
 
7365
 
 
7366
  g_assert_cmpstr(agent_directory, ==, "/tmp");
 
7367
  g_assert_cmpstr(helper_directory, ==, "/var/tmp");
 
7368
  g_assert_true(user == 1);
 
7369
  g_assert_true(group == 2);
 
7370
  char *marg = mandos_argz;
 
7371
  g_assert_cmpstr(marg, ==, "mandos-client");
 
7372
  marg = argz_next(mandos_argz, mandos_argz_length, marg);
 
7373
  g_assert_cmpstr(marg, ==, "one");
 
7374
  marg = argz_next(mandos_argz, mandos_argz_length, marg);
 
7375
  g_assert_cmpstr(marg, ==, "two");
 
7376
  marg = argz_next(mandos_argz, mandos_argz_length, marg);
 
7377
  g_assert_cmpstr(marg, ==, "three");
 
7378
  g_assert_cmpuint((unsigned int)argz_count(mandos_argz,
 
7379
                                            mandos_argz_length),
 
7380
                   ==, 4);
 
7381
 
 
7382
  for(char **arg = argv; *arg != NULL; arg++){
 
7383
    free(*arg);
 
7384
  }
 
7385
}
 
7386
 
 
7387
static void test_parse_arguments_mixed(__attribute__((unused))
 
7388
                                       test_fixture *fixture,
 
7389
                                       __attribute__((unused))
 
7390
                                       gconstpointer user_data){
 
7391
  char *argv[] = {
 
7392
    strdup("prgname"),
 
7393
    strdup("mandos-client"),
 
7394
    strdup("--user"),
 
7395
    strdup("1"),
 
7396
    strdup("one"),
 
7397
    strdup("--agent-directory"),
 
7398
    strdup("/tmp"),
 
7399
    strdup("two"),
 
7400
    strdup("three"),
 
7401
    strdup("--helper-directory=/var/tmp"),
 
7402
    NULL };
 
7403
  const int argc = (sizeof(argv) / sizeof(char *)) - 1;
 
7404
 
 
7405
  __attribute__((cleanup(cleanup_string)))
 
7406
    char *agent_directory = NULL;
 
7407
  __attribute__((cleanup(cleanup_string)))
 
7408
    char *helper_directory = NULL;
 
7409
  uid_t user = 0;
 
7410
  gid_t group = 0;
 
7411
  __attribute__((cleanup(cleanup_string)))
 
7412
    char *mandos_argz = NULL;
 
7413
  size_t mandos_argz_length = 0;
 
7414
 
 
7415
  g_assert_true(parse_arguments(argc, argv, false, &agent_directory,
 
7416
                                &helper_directory, &user, &group,
 
7417
                                &mandos_argz, &mandos_argz_length));
 
7418
 
 
7419
  g_assert_cmpstr(agent_directory, ==, "/tmp");
 
7420
  g_assert_cmpstr(helper_directory, ==, "/var/tmp");
 
7421
  g_assert_true(user == 1);
 
7422
  g_assert_true(group == 0);
 
7423
  char *marg = mandos_argz;
 
7424
  g_assert_cmpstr(marg, ==, "mandos-client");
 
7425
  marg = argz_next(mandos_argz, mandos_argz_length, marg);
 
7426
  g_assert_cmpstr(marg, ==, "one");
 
7427
  marg = argz_next(mandos_argz, mandos_argz_length, marg);
 
7428
  g_assert_cmpstr(marg, ==, "two");
 
7429
  marg = argz_next(mandos_argz, mandos_argz_length, marg);
 
7430
  g_assert_cmpstr(marg, ==, "three");
 
7431
  g_assert_cmpuint((unsigned int)argz_count(mandos_argz,
 
7432
                                            mandos_argz_length),
 
7433
                   ==, 4);
 
7434
 
 
7435
  for(char **arg = argv; *arg != NULL; arg++){
 
7436
    free(*arg);
 
7437
  }
 
7438
}
 
7439
 
 
7440
/* End of tests section */
 
7441
 
 
7442
/* Test boilerplate section; New tests should be added to the test
 
7443
   suite definition here, in the "run_tests" function.
 
7444
 
 
7445
   Finally, this section also contains the should_only_run_tests()
 
7446
   function used by main() for deciding if tests should be run or to
 
7447
   start normally. */
 
7448
 
 
7449
__attribute__((cold))
 
7450
static bool run_tests(int argc, char *argv[]){
 
7451
  g_test_init(&argc, &argv, NULL);
 
7452
 
 
7453
  /* A macro to add a test with no setup or teardown functions */
 
7454
#define test_add(testpath, testfunc)                    \
 
7455
  do {                                                  \
 
7456
    g_test_add((testpath), test_fixture, NULL, NULL,    \
 
7457
               (testfunc), NULL);                       \
 
7458
  } while(false)
 
7459
 
 
7460
  /* Test the signal-related functions first, since some other tests
 
7461
     depend on these functions in their setups and teardowns */
 
7462
  test_add("/signal-handling/setup", test_setup_signal_handler);
 
7463
  test_add("/signal-handling/restore", test_restore_signal_handler);
 
7464
  test_add("/signal-handling/block", test_block_sigchld);
 
7465
  test_add("/signal-handling/restore-sigmask", test_restore_sigmask);
 
7466
 
 
7467
  /* Regular non-signal-related tests; these use no setups or
 
7468
     teardowns */
 
7469
  test_add("/parse_arguments/noargs", test_parse_arguments_noargs);
 
7470
  test_add("/parse_arguments/invalid", test_parse_arguments_invalid);
 
7471
  test_add("/parse_arguments/long-dir",
 
7472
           test_parse_arguments_long_dir);
 
7473
  test_add("/parse_arguments/short-dir",
 
7474
           test_parse_arguments_short_dir);
 
7475
  test_add("/parse_arguments/helper-directory",
 
7476
           test_parse_arguments_helper_directory);
 
7477
  test_add("/parse_arguments/plugin-helper-dir",
 
7478
           test_parse_arguments_plugin_helper_dir);
 
7479
  test_add("/parse_arguments/user", test_parse_arguments_user);
 
7480
  test_add("/parse_arguments/user-invalid",
 
7481
           test_parse_arguments_user_invalid);
 
7482
  test_add("/parse_arguments/user-zero-invalid",
 
7483
           test_parse_arguments_user_zero_invalid);
 
7484
  test_add("/parse_arguments/group", test_parse_arguments_group);
 
7485
  test_add("/parse_arguments/group-invalid",
 
7486
           test_parse_arguments_group_invalid);
 
7487
  test_add("/parse_arguments/group-zero-invalid",
 
7488
           test_parse_arguments_group_zero_invalid);
 
7489
  test_add("/parse_arguments/mandos-noargs",
 
7490
           test_parse_arguments_mandos_noargs);
 
7491
  test_add("/parse_arguments/mandos-args",
 
7492
           test_parse_arguments_mandos_args);
 
7493
  test_add("/parse_arguments/all-args",
 
7494
           test_parse_arguments_all_args);
 
7495
  test_add("/parse_arguments/mixed", test_parse_arguments_mixed);
 
7496
  test_add("/queue/create", test_create_queue);
 
7497
  test_add("/queue/add", test_add_to_queue);
 
7498
  test_add("/queue/has_question/empty",
 
7499
           test_queue_has_question_empty);
 
7500
  test_add("/queue/has_question/false",
 
7501
           test_queue_has_question_false);
 
7502
  test_add("/queue/has_question/true", test_queue_has_question_true);
 
7503
  test_add("/queue/has_question/false2",
 
7504
           test_queue_has_question_false2);
 
7505
  test_add("/queue/has_question/true2",
 
7506
           test_queue_has_question_true2);
 
7507
  test_add("/buffer/cleanup", test_cleanup_buffer);
 
7508
  test_add("/string_set/net-set-contains-nothing",
 
7509
           test_string_set_new_set_contains_nothing);
 
7510
  test_add("/string_set/with-added-string-contains-it",
 
7511
           test_string_set_with_added_string_contains_it);
 
7512
  test_add("/string_set/cleared-does-not-contain-string",
 
7513
           test_string_set_cleared_does_not_contain_str);
 
7514
  test_add("/string_set/swap/one-with-empty",
 
7515
           test_string_set_swap_one_with_empty);
 
7516
  test_add("/string_set/swap/empty-with-one",
 
7517
           test_string_set_swap_empty_with_one);
 
7518
  test_add("/string_set/swap/one-with-one",
 
7519
           test_string_set_swap_one_with_one);
 
7520
 
 
7521
  /* A macro to add a test using the setup and teardown functions */
 
7522
#define test_add_st(path, func)                                 \
 
7523
  do {                                                          \
 
7524
    g_test_add((path), test_fixture, NULL, test_setup, (func),  \
 
7525
               test_teardown);                                  \
 
7526
  } while(false)
 
7527
 
 
7528
  /* Signal-related tests; these use setups and teardowns which
 
7529
     establish, during each test run, a signal handler for, and a
 
7530
     signal mask blocking, the SIGCHLD signal, just like main() */
 
7531
  test_add_st("/wait_for_event/timeout", test_wait_for_event_timeout);
 
7532
  test_add_st("/wait_for_event/event", test_wait_for_event_event);
 
7533
  test_add_st("/wait_for_event/sigchld", test_wait_for_event_sigchld);
 
7534
  test_add_st("/run_queue/zeroes-next-run",
 
7535
              test_run_queue_zeroes_next_run);
 
7536
  test_add_st("/run_queue/clears-cancelled_filenames",
 
7537
              test_run_queue_clears_cancelled_filenames);
 
7538
  test_add_st("/run_queue/skips-cancelled-filenames",
 
7539
              test_run_queue_skips_cancelled_filenames);
 
7540
  test_add_st("/run_queue/one-task", test_run_queue_one_task);
 
7541
  test_add_st("/run_queue/two-tasks", test_run_queue_two_tasks);
 
7542
  test_add_st("/run_queue/two-tasks/quit",
 
7543
              test_run_queue_two_tasks_quit);
 
7544
  test_add_st("/run_queue/two-tasks-cleanup",
 
7545
              test_run_queue_two_tasks_cleanup);
 
7546
  test_add_st("/task-creators/start_mandos_client",
 
7547
              test_start_mandos_client);
 
7548
  test_add_st("/task-creators/start_mandos_client/execv",
 
7549
              test_start_mandos_client_execv);
 
7550
  test_add_st("/task-creators/start_mandos_client/suid/euid",
 
7551
              test_start_mandos_client_suid_euid);
 
7552
  test_add_st("/task-creators/start_mandos_client/suid/egid",
 
7553
              test_start_mandos_client_suid_egid);
 
7554
  test_add_st("/task-creators/start_mandos_client/suid/ruid",
 
7555
              test_start_mandos_client_suid_ruid);
 
7556
  test_add_st("/task-creators/start_mandos_client/suid/rgid",
 
7557
              test_start_mandos_client_suid_rgid);
 
7558
  test_add_st("/task-creators/start_mandos_client/read",
 
7559
              test_start_mandos_client_read);
 
7560
  test_add_st("/task-creators/start_mandos_client/helper-directory",
 
7561
              test_start_mandos_client_helper_directory);
 
7562
  test_add_st("/task-creators/start_mandos_client/sigmask",
 
7563
              test_start_mandos_client_sigmask);
 
7564
  test_add_st("/task/wait_for_mandos_client_exit/badpid",
 
7565
              test_wait_for_mandos_client_exit_badpid);
 
7566
  test_add_st("/task/wait_for_mandos_client_exit/noexit",
 
7567
              test_wait_for_mandos_client_exit_noexit);
 
7568
  test_add_st("/task/wait_for_mandos_client_exit/success",
 
7569
              test_wait_for_mandos_client_exit_success);
 
7570
  test_add_st("/task/wait_for_mandos_client_exit/failure",
 
7571
              test_wait_for_mandos_client_exit_failure);
 
7572
  test_add_st("/task/wait_for_mandos_client_exit/killed",
 
7573
              test_wait_for_mandos_client_exit_killed);
 
7574
  test_add_st("/task/read_mandos_client_output/readerror",
 
7575
              test_read_mandos_client_output_readerror);
 
7576
  test_add_st("/task/read_mandos_client_output/nodata",
 
7577
              test_read_mandos_client_output_nodata);
 
7578
  test_add_st("/task/read_mandos_client_output/eof",
 
7579
              test_read_mandos_client_output_eof);
 
7580
  test_add_st("/task/read_mandos_client_output/once",
 
7581
              test_read_mandos_client_output_once);
 
7582
  test_add_st("/task/read_mandos_client_output/malloc",
 
7583
              test_read_mandos_client_output_malloc);
 
7584
  test_add_st("/task/read_mandos_client_output/append",
 
7585
              test_read_mandos_client_output_append);
 
7586
  test_add_st("/task-creators/add_inotify_dir_watch",
 
7587
              test_add_inotify_dir_watch);
 
7588
  test_add_st("/task-creators/add_inotify_dir_watch/fail",
 
7589
              test_add_inotify_dir_watch_fail);
 
7590
  test_add_st("/task-creators/add_inotify_dir_watch/EAGAIN",
 
7591
              test_add_inotify_dir_watch_EAGAIN);
 
7592
  test_add_st("/task-creators/add_inotify_dir_watch/IN_CLOSE_WRITE",
 
7593
              test_add_inotify_dir_watch_IN_CLOSE_WRITE);
 
7594
  test_add_st("/task-creators/add_inotify_dir_watch/IN_MOVED_TO",
 
7595
              test_add_inotify_dir_watch_IN_MOVED_TO);
 
7596
  test_add_st("/task-creators/add_inotify_dir_watch/IN_DELETE",
 
7597
              test_add_inotify_dir_watch_IN_DELETE);
 
7598
  test_add_st("/task/read_inotify_event/readerror",
 
7599
              test_read_inotify_event_readerror);
 
7600
  test_add_st("/task/read_inotify_event/bad-epoll",
 
7601
              test_read_inotify_event_bad_epoll);
 
7602
  test_add_st("/task/read_inotify_event/nodata",
 
7603
              test_read_inotify_event_nodata);
 
7604
  test_add_st("/task/read_inotify_event/eof",
 
7605
              test_read_inotify_event_eof);
 
7606
  test_add_st("/task/read_inotify_event/IN_CLOSE_WRITE",
 
7607
              test_read_inotify_event_IN_CLOSE_WRITE);
 
7608
  test_add_st("/task/read_inotify_event/IN_MOVED_TO",
 
7609
              test_read_inotify_event_IN_MOVED_TO);
 
7610
  test_add_st("/task/read_inotify_event/IN_DELETE",
 
7611
              test_read_inotify_event_IN_DELETE);
 
7612
  test_add_st("/task/read_inotify_event/IN_CLOSE_WRITE/badname",
 
7613
              test_read_inotify_event_IN_CLOSE_WRITE_badname);
 
7614
  test_add_st("/task/read_inotify_event/IN_MOVED_TO/badname",
 
7615
              test_read_inotify_event_IN_MOVED_TO_badname);
 
7616
  test_add_st("/task/read_inotify_event/IN_DELETE/badname",
 
7617
              test_read_inotify_event_IN_DELETE_badname);
 
7618
  test_add_st("/task/open_and_parse_question/ENOENT",
 
7619
              test_open_and_parse_question_ENOENT);
 
7620
  test_add_st("/task/open_and_parse_question/EIO",
 
7621
              test_open_and_parse_question_EIO);
 
7622
  test_add_st("/task/open_and_parse_question/parse-error",
 
7623
              test_open_and_parse_question_parse_error);
 
7624
  test_add_st("/task/open_and_parse_question/nosocket",
 
7625
              test_open_and_parse_question_nosocket);
 
7626
  test_add_st("/task/open_and_parse_question/badsocket",
 
7627
              test_open_and_parse_question_badsocket);
 
7628
  test_add_st("/task/open_and_parse_question/nopid",
 
7629
              test_open_and_parse_question_nopid);
 
7630
  test_add_st("/task/open_and_parse_question/badpid",
 
7631
              test_open_and_parse_question_badpid);
 
7632
  test_add_st("/task/open_and_parse_question/noexist_pid",
 
7633
              test_open_and_parse_question_noexist_pid);
 
7634
  test_add_st("/task/open_and_parse_question/no-notafter",
 
7635
              test_open_and_parse_question_no_notafter);
 
7636
  test_add_st("/task/open_and_parse_question/bad-notafter",
 
7637
              test_open_and_parse_question_bad_notafter);
 
7638
  test_add_st("/task/open_and_parse_question/notafter-0",
 
7639
              test_open_and_parse_question_notafter_0);
 
7640
  test_add_st("/task/open_and_parse_question/notafter-1",
 
7641
              test_open_and_parse_question_notafter_1);
 
7642
  test_add_st("/task/open_and_parse_question/notafter-1-1",
 
7643
              test_open_and_parse_question_notafter_1_1);
 
7644
  test_add_st("/task/open_and_parse_question/notafter-1-2",
 
7645
              test_open_and_parse_question_notafter_1_2);
 
7646
  test_add_st("/task/open_and_parse_question/equal-notafter",
 
7647
              test_open_and_parse_question_equal_notafter);
 
7648
  test_add_st("/task/open_and_parse_question/late-notafter",
 
7649
              test_open_and_parse_question_late_notafter);
 
7650
  test_add_st("/task/cancel_old_question/0-1-2",
 
7651
              test_cancel_old_question_0_1_2);
 
7652
  test_add_st("/task/cancel_old_question/0-2-1",
 
7653
              test_cancel_old_question_0_2_1);
 
7654
  test_add_st("/task/cancel_old_question/1-2-3",
 
7655
              test_cancel_old_question_1_2_3);
 
7656
  test_add_st("/task/cancel_old_question/1-3-2",
 
7657
              test_cancel_old_question_1_3_2);
 
7658
  test_add_st("/task/cancel_old_question/2-1-3",
 
7659
              test_cancel_old_question_2_1_3);
 
7660
  test_add_st("/task/cancel_old_question/2-3-1",
 
7661
              test_cancel_old_question_2_3_1);
 
7662
  test_add_st("/task/cancel_old_question/3-1-2",
 
7663
              test_cancel_old_question_3_1_2);
 
7664
  test_add_st("/task/cancel_old_question/3-2-1",
 
7665
              test_cancel_old_question_3_2_1);
 
7666
  test_add_st("/task/connect_question_socket/name-too-long",
 
7667
              test_connect_question_socket_name_too_long);
 
7668
  test_add_st("/task/connect_question_socket/connect-fail",
 
7669
              test_connect_question_socket_connect_fail);
 
7670
  test_add_st("/task/connect_question_socket/bad-epoll",
 
7671
              test_connect_question_socket_bad_epoll);
 
7672
  test_add_st("/task/connect_question_socket/usable",
 
7673
              test_connect_question_socket_usable);
 
7674
  test_add_st("/task/send_password_to_socket/client-not-exited",
 
7675
              test_send_password_to_socket_client_not_exited);
 
7676
  test_add_st("/task/send_password_to_socket/password-not-read",
 
7677
              test_send_password_to_socket_password_not_read);
 
7678
  test_add_st("/task/send_password_to_socket/EMSGSIZE",
 
7679
              test_send_password_to_socket_EMSGSIZE);
 
7680
  test_add_st("/task/send_password_to_socket/retry",
 
7681
              test_send_password_to_socket_retry);
 
7682
  test_add_st("/task/send_password_to_socket/bad-epoll",
 
7683
              test_send_password_to_socket_bad_epoll);
 
7684
  test_add_st("/task/send_password_to_socket/null-password",
 
7685
              test_send_password_to_socket_null_password);
 
7686
  test_add_st("/task/send_password_to_socket/empty-password",
 
7687
              test_send_password_to_socket_empty_password);
 
7688
  test_add_st("/task/send_password_to_socket/empty-str-password",
 
7689
              test_send_password_to_socket_empty_str_pass);
 
7690
  test_add_st("/task/send_password_to_socket/text-password",
 
7691
              test_send_password_to_socket_text_password);
 
7692
  test_add_st("/task/send_password_to_socket/binary-password",
 
7693
              test_send_password_to_socket_binary_password);
 
7694
  test_add_st("/task/send_password_to_socket/nuls-in-password",
 
7695
              test_send_password_to_socket_nuls_in_password);
 
7696
  test_add_st("/task-creators/add_existing_questions/ENOENT",
 
7697
              test_add_existing_questions_ENOENT);
 
7698
  test_add_st("/task-creators/add_existing_questions/no-questions",
 
7699
              test_add_existing_questions_no_questions);
 
7700
  test_add_st("/task-creators/add_existing_questions/one-question",
 
7701
              test_add_existing_questions_one_question);
 
7702
  test_add_st("/task-creators/add_existing_questions/two-questions",
 
7703
              test_add_existing_questions_two_questions);
 
7704
  test_add_st("/task-creators/add_existing_questions/non-questions",
 
7705
              test_add_existing_questions_non_questions);
 
7706
  test_add_st("/task-creators/add_existing_questions/both-types",
 
7707
              test_add_existing_questions_both_types);
 
7708
 
 
7709
  return g_test_run() == 0;
 
7710
}
 
7711
 
 
7712
static bool should_only_run_tests(int *argc_p, char **argv_p[]){
 
7713
  GOptionContext *context = g_option_context_new("");
 
7714
 
 
7715
  g_option_context_set_help_enabled(context, FALSE);
 
7716
  g_option_context_set_ignore_unknown_options(context, TRUE);
 
7717
 
 
7718
  gboolean run_tests = FALSE;
 
7719
  GOptionEntry entries[] = {
 
7720
    { "test", 0, 0, G_OPTION_ARG_NONE,
 
7721
      &run_tests, "Run tests", NULL },
 
7722
    { NULL }
 
7723
  };
 
7724
  g_option_context_add_main_entries(context, entries, NULL);
 
7725
 
 
7726
  GError *error = NULL;
 
7727
 
 
7728
  if(g_option_context_parse(context, argc_p, argv_p, &error) != TRUE){
 
7729
    g_option_context_free(context);
 
7730
    g_error("Failed to parse options: %s", error->message);
 
7731
  }
 
7732
 
 
7733
  g_option_context_free(context);
 
7734
  return run_tests != FALSE;
 
7735
}