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

  • Committer: Teddy Hogeborn
  • Date: 2022-04-23 21:14:38 UTC
  • Revision ID: teddy@recompile.se-20220423211438-qadwdpyodk1zfra5
Debian package: Client: Update Lintian override file

* debian/mandos-client.lintian-overrides: Remove all empty commented
  lines.  Re-word text to avoid negation.  Rename "setuid-binary" tag
  to "elevated-privileges".

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Lines of Context:
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2
/*
3
3
 * Mandos password agent - Simple password agent to run Mandos client
4
4
 *
5
 
 * Copyright © 2019 Teddy Hogeborn
6
 
 * Copyright © 2019 Björn Påhlsson
 
5
 * Copyright © 2019-2021 Teddy Hogeborn
 
6
 * Copyright © 2019-2021 Björn Påhlsson
7
7
 * 
8
8
 * This file is part of Mandos.
9
9
 * 
23
23
 * Contact the authors at <mandos@recompile.se>.
24
24
 */
25
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 */
 
26
#define _GNU_SOURCE             /* pipe2(), O_CLOEXEC, setresgid(),
 
27
                                   setresuid(), asprintf(), getline(),
 
28
                                   basename() */
 
29
#include <inttypes.h>           /* uintmax_t, strtoumax(), PRIuMAX,
 
30
                                   PRIdMAX, intmax_t, uint32_t,
 
31
                                   SCNx32, SCNuMAX, SCNxMAX */
 
32
#include <stddef.h>             /* size_t, NULL */
31
33
#include <sys/types.h>          /* pid_t, uid_t, gid_t, getuid(),
32
34
                                   getpid() */
33
35
#include <stdbool.h>            /* bool, true, false */
40
42
                                   NSIG, sigismember(), SA_ONSTACK,
41
43
                                   SIG_DFL, SIG_IGN, SIGINT, SIGQUIT,
42
44
                                   SIGHUP, SIGSTOP, SIG_UNBLOCK */
 
45
#include <unistd.h>             /* uid_t, gid_t, close(), pipe2(),
 
46
                                   fork(), _exit(), dup2(),
 
47
                                   STDOUT_FILENO, setresgid(),
 
48
                                   setresuid(), execv(), ssize_t,
 
49
                                   read(), dup3(), getuid(), dup(),
 
50
                                   STDERR_FILENO, pause(), write(),
 
51
                                   rmdir(), unlink(), getpid() */
43
52
#include <stdlib.h>             /* EXIT_SUCCESS, EXIT_FAILURE,
44
 
                                   malloc(), free(), strtoumax(),
45
 
                                   realloc(), setenv(), calloc(),
46
 
                                   mkdtemp(), mkostemp() */
 
53
                                   malloc(), free(), realloc(),
 
54
                                   setenv(), calloc(), mkdtemp(),
 
55
                                   mkostemp() */
47
56
#include <iso646.h>             /* not, or, and, xor */
48
57
#include <error.h>              /* error() */
49
58
#include <sysexits.h>           /* EX_USAGE, EX_OSERR, EX_OSFILE */
50
59
#include <errno.h>              /* errno, error_t, EACCES,
51
 
                                   ENAMETOOLONG, ENOENT, EEXIST,
52
 
                                   ECHILD, EPERM, ENOMEM, EAGAIN,
53
 
                                   EINTR, ENOBUFS, EADDRINUSE,
 
60
                                   ENAMETOOLONG, ENOENT, ENOTDIR,
 
61
                                   ENOMEM, EEXIST, ECHILD, EPERM,
 
62
                                   EAGAIN, EINTR, ENOBUFS, EADDRINUSE,
54
63
                                   ECONNREFUSED, ECONNRESET,
55
64
                                   ETOOMANYREFS, EMSGSIZE, EBADF,
56
65
                                   EINVAL */
57
66
#include <string.h>             /* strdup(), memcpy(),
58
67
                                   explicit_bzero(), memset(),
59
68
                                   strcmp(), strlen(), strncpy(),
60
 
                                   memcmp(), basename() */
 
69
                                   memcmp(), basename(), strerror() */
61
70
#include <argz.h>               /* argz_create(), argz_count(),
62
71
                                   argz_extract(), argz_next(),
63
72
                                   argz_add() */
73
82
                                   ARGP_ERR_UNKNOWN, ARGP_KEY_ARGS,
74
83
                                   struct argp, argp_parse(),
75
84
                                   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() */
 
85
#include <stdint.h>             /* SIZE_MAX, uint32_t */
83
86
#include <sys/mman.h>           /* munlock(), mlock() */
84
87
#include <fcntl.h>              /* O_CLOEXEC, O_NONBLOCK, fcntl(),
85
88
                                   F_GETFD, F_GETFL, FD_CLOEXEC,
86
 
                                   open(), O_WRONLY, O_RDONLY */
 
89
                                   open(), O_WRONLY, O_NOCTTY,
 
90
                                   O_RDONLY, O_NOFOLLOW */
87
91
#include <sys/wait.h>           /* waitpid(), WNOHANG, WIFEXITED(),
88
92
                                   WEXITSTATUS() */
89
93
#include <limits.h>             /* PIPE_BUF, NAME_MAX, INT_MAX */
90
94
#include <sys/inotify.h>        /* inotify_init1(), IN_NONBLOCK,
91
95
                                   IN_CLOEXEC, inotify_add_watch(),
92
96
                                   IN_CLOSE_WRITE, IN_MOVED_TO,
93
 
                                   IN_DELETE, struct inotify_event */
 
97
                                   IN_MOVED_FROM, IN_DELETE,
 
98
                                   IN_EXCL_UNLINK, IN_ONLYDIR,
 
99
                                   struct inotify_event */
94
100
#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() */
 
101
#include <stdio.h>              /* asprintf(), FILE, stderr, fopen(),
 
102
                                   fclose(), getline(), sscanf(),
 
103
                                   feof(), ferror(), rename(),
 
104
                                   fdopen(), fprintf(), fscanf() */
100
105
#include <glib.h>    /* GKeyFile, g_key_file_free(), g_key_file_new(),
101
106
                        GError, g_key_file_load_from_file(),
102
107
                        G_KEY_FILE_NONE, TRUE, G_FILE_ERROR_NOENT,
107
112
                        g_assert_null(), g_assert_false(),
108
113
                        g_assert_cmpint(), g_assert_cmpuint(),
109
114
                        g_test_skip(), g_assert_cmpstr(),
110
 
                        g_test_init(), g_test_add(), g_test_run(),
111
 
                        GOptionContext, g_option_context_new(),
 
115
                        g_test_message(), g_test_init(), g_test_add(),
 
116
                        g_test_run(), GOptionContext,
 
117
                        g_option_context_new(),
112
118
                        g_option_context_set_help_enabled(), FALSE,
113
119
                        g_option_context_set_ignore_unknown_options(),
114
120
                        gboolean, GOptionEntry, G_OPTION_ARG_NONE,
145
151
  mono_microsecs next_run;
146
152
} __attribute__((designated_init)) task_queue;
147
153
 
148
 
/* "func_type" - A function type for task functions
 
154
/* "task_func" - A function type for task functions
149
155
 
150
156
   I.e. functions for the code which runs when a task is run, all have
151
157
   this type */
431
437
    case EACCES:
432
438
    case ENAMETOOLONG:
433
439
    case ENOENT:
 
440
    case ENOTDIR:
434
441
      return EX_OSFILE;
435
442
    default:
436
443
      return EX_OSERR;
647
654
 
648
655
__attribute__((nonnull, warn_unused_result))
649
656
bool add_to_queue(task_queue *const queue, const task_context task){
 
657
  if((queue->length + 1) > (SIZE_MAX / sizeof(task_context))){
 
658
    /* overflow */
 
659
    error(0, ENOMEM, "Failed to allocate %" PRIuMAX
 
660
          " tasks for queue->tasks", (uintmax_t)(queue->length + 1));
 
661
    errno = ENOMEM;
 
662
    return false;
 
663
  }
650
664
  const size_t needed_size = sizeof(task_context)*(queue->length + 1);
651
665
  if(needed_size > (queue->allocated)){
652
666
    task_context *const new_tasks = realloc(queue->tasks,
857
871
  }
858
872
  close(pipefds[1]);
859
873
 
 
874
  if(pid == -1){
 
875
    error(0, errno, "Failed to fork()");
 
876
    close(pipefds[0]);
 
877
    return false;
 
878
  }
 
879
 
860
880
  if(not add_to_queue(queue, (task_context){
861
881
        .func=wait_for_mandos_client_exit,
862
882
        .pid=pid,
1017
1037
    return false;
1018
1038
  }
1019
1039
 
1020
 
  if(inotify_add_watch(fd, dir, IN_CLOSE_WRITE
1021
 
                       | IN_MOVED_TO | IN_DELETE)
 
1040
  if(inotify_add_watch(fd, dir, IN_CLOSE_WRITE | IN_MOVED_TO
 
1041
                       | IN_MOVED_FROM| IN_DELETE | IN_EXCL_UNLINK
 
1042
                       | IN_ONLYDIR)
1022
1043
     == -1){
1023
1044
    error(0, errno, "Failed to create inotify watch on %s", dir);
1024
1045
    return false;
1071
1092
  /* "sufficient to read at least one event." - inotify(7) */
1072
1093
  const size_t ievent_size = (sizeof(struct inotify_event)
1073
1094
                              + NAME_MAX + 1);
1074
 
  char ievent_buffer[sizeof(struct inotify_event) + NAME_MAX + 1];
1075
 
  struct inotify_event *ievent = ((struct inotify_event *)
1076
 
                                  ievent_buffer);
 
1095
  struct {
 
1096
    struct inotify_event event;
 
1097
    char name_buffer[NAME_MAX + 1];
 
1098
  } ievent_buffer;
 
1099
  struct inotify_event *const ievent = &ievent_buffer.event;
1077
1100
 
1078
1101
  const ssize_t read_length = read(fd, ievent, ievent_size);
1079
1102
  if(read_length == 0){ /* EOF */
1117
1140
             immediately */
1118
1141
          queue->next_run = 1;
1119
1142
        }
1120
 
      } else if(ievent->mask & IN_DELETE){
 
1143
      } else if(ievent->mask & (IN_MOVED_FROM | IN_DELETE)){
1121
1144
        if(not string_set_add(cancelled_filenames,
1122
1145
                              question_filename)){
1123
1146
          error(0, errno, "Could not add question %s to"
1173
1196
  bool *const password_is_read = task.password_is_read;
1174
1197
 
1175
1198
  /* We use the GLib "Key-value file parser" functions to parse the
1176
 
     question file.  See <https://www.freedesktop.org/wiki/Software
1177
 
     /systemd/PasswordAgents/> for specification of contents */
 
1199
     question file.  See <https://systemd.io/PASSWORD_AGENTS/> for
 
1200
     specification of contents */
1178
1201
  __attribute__((nonnull))
1179
1202
    void cleanup_g_key_file(GKeyFile **key_file){
1180
1203
    if(*key_file != NULL){
1470
1493
         not. You may but don't have to include a final NUL byte in
1471
1494
         your message.
1472
1495
 
1473
 
         — <https://www.freedesktop.org/wiki/Software/systemd/
1474
 
         PasswordAgents/> (Wed 08 Oct 2014 02:14:28 AM UTC)
 
1496
         — <https://systemd.io/PASSWORD_AGENTS/> (Tue, 15 Sep 2020
 
1497
         14:24:20 GMT)
1475
1498
      */
1476
1499
      send_buffer[0] = '+';     /* Prefix with "+" */
1477
1500
      /* Always add an extra NUL */
1482
1505
      errno = 0;
1483
1506
      ssize_t ssret = send(fd, send_buffer, send_buffer_length,
1484
1507
                           MSG_NOSIGNAL);
1485
 
      const error_t saved_errno = errno;
 
1508
      const error_t saved_errno = (ssret < 0) ? errno : 0;
1486
1509
#if defined(__GLIBC_PREREQ) and __GLIBC_PREREQ(2, 25)
1487
1510
      explicit_bzero(send_buffer, send_buffer_length);
1488
1511
#else
1506
1529
          /* Retry, below */
1507
1530
          break;
1508
1531
        case EMSGSIZE:
1509
 
          error(0, 0, "Password of size %" PRIuMAX " is too big",
1510
 
                (uintmax_t)password->length);
 
1532
          error(0, saved_errno, "Password of size %" PRIuMAX
 
1533
                " is too big", (uintmax_t)password->length);
1511
1534
#if __GNUC__ < 7
1512
1535
          /* FALLTHROUGH */
1513
1536
#else
1515
1538
#endif
1516
1539
        case 0:
1517
1540
          if(ssret >= 0 and ssret < (ssize_t)send_buffer_length){
1518
 
            error(0, 0, "Password only partially sent to socket");
 
1541
            error(0, 0, "Password only partially sent to socket %s: %"
 
1542
                  PRIuMAX " out of %" PRIuMAX " bytes sent", filename,
 
1543
                  (uintmax_t)ssret, (uintmax_t)send_buffer_length);
1519
1544
          }
1520
1545
#if __GNUC__ < 7
1521
1546
          /* FALLTHROUGH */
1877
1902
  g_assert_true(queue->tasks[0].func == dummy_func);
1878
1903
}
1879
1904
 
 
1905
static void test_add_to_queue_overflow(__attribute__((unused))
 
1906
                                       test_fixture *fixture,
 
1907
                                       __attribute__((unused))
 
1908
                                       gconstpointer user_data){
 
1909
  __attribute__((cleanup(cleanup_queue)))
 
1910
    task_queue *queue = create_queue();
 
1911
  g_assert_nonnull(queue);
 
1912
  g_assert_true(queue->length == 0);
 
1913
  queue->length = SIZE_MAX / sizeof(task_context); /* fake max size */
 
1914
 
 
1915
  FILE *real_stderr = stderr;
 
1916
  FILE *devnull = fopen("/dev/null", "we");
 
1917
  g_assert_nonnull(devnull);
 
1918
  stderr = devnull;
 
1919
  const bool ret = add_to_queue(queue,
 
1920
                                (task_context){ .func=dummy_func });
 
1921
  g_assert_true(errno == ENOMEM);
 
1922
  g_assert_false(ret);
 
1923
  stderr = real_stderr;
 
1924
  g_assert_cmpint(fclose(devnull), ==, 0);
 
1925
  queue->length = 0;            /* Restore real size */
 
1926
}
 
1927
 
1880
1928
static void dummy_func(__attribute__((unused))
1881
1929
                       const task_context task,
1882
1930
                       __attribute__((unused))
2153
2201
    }
2154
2202
    exit(EXIT_SUCCESS);
2155
2203
  }
 
2204
  if(pid == -1){
 
2205
    error(EXIT_FAILURE, errno, "Failed to fork()");
 
2206
  }
 
2207
 
2156
2208
  int status;
2157
2209
  waitpid(pid, &status, 0);
2158
2210
  if(WIFEXITED(status) and (WEXITSTATUS(status) == EXIT_SUCCESS)){
2220
2272
 
2221
2273
  {
2222
2274
    __attribute__((cleanup(cleanup_close)))
2223
 
      const int devnull_fd = open("/dev/null", O_WRONLY | O_CLOEXEC);
 
2275
      const int devnull_fd = open("/dev/null",
 
2276
                                  O_WRONLY | O_CLOEXEC | O_NOCTTY);
2224
2277
    g_assert_cmpint(devnull_fd, >=, 0);
2225
2278
    __attribute__((cleanup(cleanup_close)))
2226
2279
      const int real_stderr_fd = dup(STDERR_FILENO);
2250
2303
    {
2251
2304
      __attribute__((cleanup(cleanup_close)))
2252
2305
        const int devnull_fd = open("/dev/null",
2253
 
                                    O_WRONLY | O_CLOEXEC);
 
2306
                                    O_WRONLY | O_CLOEXEC | O_NOCTTY);
2254
2307
      g_assert_cmpint(devnull_fd, >=, 0);
2255
2308
      __attribute__((cleanup(cleanup_close)))
2256
2309
        const int real_stderr_fd = dup(STDERR_FILENO);
2901
2954
 
2902
2955
  __attribute__((cleanup(cleanup_close)))
2903
2956
    const int devnull_fd = open("/dev/null",
2904
 
                                O_WRONLY | O_CLOEXEC);
 
2957
                                O_WRONLY | O_CLOEXEC | O_NOCTTY);
2905
2958
  g_assert_cmpint(devnull_fd, >=, 0);
2906
2959
  __attribute__((cleanup(cleanup_close)))
2907
2960
    const int real_stderr_fd = dup(STDERR_FILENO);
2972
3025
 
2973
3026
  __attribute__((cleanup(cleanup_close)))
2974
3027
    const int devnull_fd = open("/dev/null",
2975
 
                                O_WRONLY | O_CLOEXEC);
 
3028
                                O_WRONLY | O_CLOEXEC, O_NOCTTY);
2976
3029
  g_assert_cmpint(devnull_fd, >=, 0);
2977
3030
  __attribute__((cleanup(cleanup_close)))
2978
3031
    const int real_stderr_fd = dup(STDERR_FILENO);
3016
3069
    buffer password = {};
3017
3070
 
3018
3071
  /* Reading /proc/self/mem from offset 0 will always give EIO */
3019
 
  const int fd = open("/proc/self/mem", O_RDONLY | O_CLOEXEC);
 
3072
  const int fd = open("/proc/self/mem",
 
3073
                      O_RDONLY | O_CLOEXEC | O_NOCTTY);
3020
3074
 
3021
3075
  bool password_is_read = false;
3022
3076
  bool quit_now = false;
3450
3504
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
3451
3505
}
3452
3506
 
 
3507
static void test_add_inotify_dir_watch_nondir(__attribute__((unused))
 
3508
                                              test_fixture *fixture,
 
3509
                                            __attribute__((unused))
 
3510
                                              gconstpointer
 
3511
                                              user_data){
 
3512
  __attribute__((cleanup(cleanup_close)))
 
3513
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
3514
  g_assert_cmpint(epoll_fd, >=, 0);
 
3515
  __attribute__((cleanup(cleanup_queue)))
 
3516
    task_queue *queue = create_queue();
 
3517
  g_assert_nonnull(queue);
 
3518
  __attribute__((cleanup(string_set_clear)))
 
3519
    string_set cancelled_filenames = {};
 
3520
  const mono_microsecs current_time = 0;
 
3521
 
 
3522
  bool quit_now = false;
 
3523
  buffer password = {};
 
3524
  bool mandos_client_exited = false;
 
3525
  bool password_is_read = false;
 
3526
 
 
3527
  const char not_a_directory[] = "/dev/tty";
 
3528
 
 
3529
  FILE *real_stderr = stderr;
 
3530
  FILE *devnull = fopen("/dev/null", "we");
 
3531
  g_assert_nonnull(devnull);
 
3532
  stderr = devnull;
 
3533
  g_assert_false(add_inotify_dir_watch(queue, epoll_fd, &quit_now,
 
3534
                                       &password, not_a_directory,
 
3535
                                       &cancelled_filenames,
 
3536
                                       &current_time,
 
3537
                                       &mandos_client_exited,
 
3538
                                       &password_is_read));
 
3539
  stderr = real_stderr;
 
3540
  g_assert_cmpint(fclose(devnull), ==, 0);
 
3541
 
 
3542
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
3543
}
 
3544
 
3453
3545
static void test_add_inotify_dir_watch_EAGAIN(__attribute__((unused))
3454
3546
                                              test_fixture *fixture,
3455
3547
                                              __attribute__((unused))
3670
3762
}
3671
3763
 
3672
3764
static
 
3765
void test_add_inotify_dir_watch_IN_MOVED_FROM(__attribute__((unused))
 
3766
                                              test_fixture *fixture,
 
3767
                                              __attribute__((unused))
 
3768
                                              gconstpointer
 
3769
                                              user_data){
 
3770
  __attribute__((cleanup(cleanup_close)))
 
3771
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
3772
  g_assert_cmpint(epoll_fd, >=, 0);
 
3773
  __attribute__((cleanup(cleanup_queue)))
 
3774
    task_queue *queue = create_queue();
 
3775
  g_assert_nonnull(queue);
 
3776
  __attribute__((cleanup(string_set_clear)))
 
3777
    string_set cancelled_filenames = {};
 
3778
  const mono_microsecs current_time = 0;
 
3779
 
 
3780
  bool quit_now = false;
 
3781
  buffer password = {};
 
3782
  bool mandos_client_exited = false;
 
3783
  bool password_is_read = false;
 
3784
 
 
3785
  __attribute__((cleanup(cleanup_string)))
 
3786
    char *tempdir = make_temporary_directory();
 
3787
  g_assert_nonnull(tempdir);
 
3788
 
 
3789
  __attribute__((cleanup(cleanup_string)))
 
3790
    char *tempfilename = make_temporary_file_in_directory(tempdir);
 
3791
  g_assert_nonnull(tempfilename);
 
3792
 
 
3793
  __attribute__((cleanup(cleanup_string)))
 
3794
    char *targetdir = make_temporary_directory();
 
3795
  g_assert_nonnull(targetdir);
 
3796
 
 
3797
  __attribute__((cleanup(cleanup_string)))
 
3798
    char *targetfilename = NULL;
 
3799
  g_assert_cmpint(asprintf(&targetfilename, "%s/%s", targetdir,
 
3800
                           basename(tempfilename)), >, 0);
 
3801
  g_assert_nonnull(targetfilename);
 
3802
 
 
3803
  g_assert_true(add_inotify_dir_watch(queue, epoll_fd, &quit_now,
 
3804
                                      &password, tempdir,
 
3805
                                      &cancelled_filenames,
 
3806
                                      &current_time,
 
3807
                                      &mandos_client_exited,
 
3808
                                      &password_is_read));
 
3809
 
 
3810
  g_assert_cmpint(rename(tempfilename, targetfilename), ==, 0);
 
3811
 
 
3812
  const task_context *const added_read_task
 
3813
    = find_matching_task(queue,
 
3814
                         (task_context){ .func=read_inotify_event });
 
3815
  g_assert_nonnull(added_read_task);
 
3816
 
 
3817
  /* "sufficient to read at least one event." - inotify(7) */
 
3818
  const size_t ievent_size = (sizeof(struct inotify_event)
 
3819
                              + NAME_MAX + 1);
 
3820
  struct inotify_event *ievent = malloc(ievent_size);
 
3821
  g_assert_nonnull(ievent);
 
3822
 
 
3823
  ssize_t read_size = read(added_read_task->fd, ievent, ievent_size);
 
3824
 
 
3825
  g_assert_cmpint((int)read_size, >, 0);
 
3826
  g_assert_true(ievent->mask & IN_MOVED_FROM);
 
3827
  g_assert_cmpstr(ievent->name, ==, basename(tempfilename));
 
3828
 
 
3829
  free(ievent);
 
3830
 
 
3831
  g_assert_cmpint(unlink(targetfilename), ==, 0);
 
3832
  g_assert_cmpint(rmdir(targetdir), ==, 0);
 
3833
  g_assert_cmpint(rmdir(tempdir), ==, 0);
 
3834
}
 
3835
 
 
3836
static
3673
3837
void test_add_inotify_dir_watch_IN_DELETE(__attribute__((unused))
3674
3838
                                          test_fixture *fixture,
3675
3839
                                          __attribute__((unused))
3733
3897
  g_assert_cmpint(rmdir(tempdir), ==, 0);
3734
3898
}
3735
3899
 
 
3900
static
 
3901
void test_add_inotify_dir_watch_IN_EXCL_UNLINK(__attribute__((unused))
 
3902
                                               test_fixture *fixture,
 
3903
                                               __attribute__((unused))
 
3904
                                               gconstpointer
 
3905
                                               user_data){
 
3906
  __attribute__((cleanup(cleanup_close)))
 
3907
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
3908
  g_assert_cmpint(epoll_fd, >=, 0);
 
3909
  __attribute__((cleanup(cleanup_queue)))
 
3910
    task_queue *queue = create_queue();
 
3911
  g_assert_nonnull(queue);
 
3912
  __attribute__((cleanup(string_set_clear)))
 
3913
    string_set cancelled_filenames = {};
 
3914
  const mono_microsecs current_time = 0;
 
3915
 
 
3916
  bool quit_now = false;
 
3917
  buffer password = {};
 
3918
  bool mandos_client_exited = false;
 
3919
  bool password_is_read = false;
 
3920
 
 
3921
  __attribute__((cleanup(cleanup_string)))
 
3922
    char *tempdir = make_temporary_directory();
 
3923
  g_assert_nonnull(tempdir);
 
3924
 
 
3925
  __attribute__((cleanup(cleanup_string)))
 
3926
    char *tempfile = make_temporary_file_in_directory(tempdir);
 
3927
  g_assert_nonnull(tempfile);
 
3928
  int tempfile_fd = open(tempfile, O_WRONLY | O_CLOEXEC | O_NOCTTY
 
3929
                         | O_NOFOLLOW);
 
3930
  g_assert_cmpint(tempfile_fd, >, 2);
 
3931
 
 
3932
  g_assert_true(add_inotify_dir_watch(queue, epoll_fd, &quit_now,
 
3933
                                      &password, tempdir,
 
3934
                                      &cancelled_filenames,
 
3935
                                      &current_time,
 
3936
                                      &mandos_client_exited,
 
3937
                                      &password_is_read));
 
3938
  g_assert_cmpint(unlink(tempfile), ==, 0);
 
3939
 
 
3940
  g_assert_cmpuint((unsigned int)queue->length, >, 0);
 
3941
 
 
3942
  const task_context *const added_read_task
 
3943
    = find_matching_task(queue,
 
3944
                         (task_context){ .func=read_inotify_event });
 
3945
  g_assert_nonnull(added_read_task);
 
3946
 
 
3947
  g_assert_cmpint(added_read_task->fd, >, 2);
 
3948
  g_assert_true(fd_has_cloexec_and_nonblock(added_read_task->fd));
 
3949
 
 
3950
  /* "sufficient to read at least one event." - inotify(7) */
 
3951
  const size_t ievent_size = (sizeof(struct inotify_event)
 
3952
                              + NAME_MAX + 1);
 
3953
  struct inotify_event *ievent = malloc(ievent_size);
 
3954
  g_assert_nonnull(ievent);
 
3955
 
 
3956
  ssize_t read_size = 0;
 
3957
  read_size = read(added_read_task->fd, ievent, ievent_size);
 
3958
 
 
3959
  g_assert_cmpint((int)read_size, >, 0);
 
3960
  g_assert_true(ievent->mask & IN_DELETE);
 
3961
  g_assert_cmpstr(ievent->name, ==, basename(tempfile));
 
3962
 
 
3963
  g_assert_cmpint(close(tempfile_fd), ==, 0);
 
3964
 
 
3965
  /* IN_EXCL_UNLINK should make the closing of the previously unlinked
 
3966
     file not appear as an ievent, so we should not see it now. */
 
3967
  read_size = read(added_read_task->fd, ievent, ievent_size);
 
3968
  g_assert_cmpint((int)read_size, ==, -1);
 
3969
  g_assert_true(errno == EAGAIN);
 
3970
 
 
3971
  free(ievent);
 
3972
 
 
3973
  g_assert_cmpint(rmdir(tempdir), ==, 0);
 
3974
}
 
3975
 
3736
3976
static void test_read_inotify_event_readerror(__attribute__((unused))
3737
3977
                                              test_fixture *fixture,
3738
3978
                                              __attribute__((unused))
3744
3984
  const mono_microsecs current_time = 0;
3745
3985
 
3746
3986
  /* Reading /proc/self/mem from offset 0 will always result in EIO */
3747
 
  const int fd = open("/proc/self/mem", O_RDONLY | O_CLOEXEC);
 
3987
  const int fd = open("/proc/self/mem",
 
3988
                      O_RDONLY | O_CLOEXEC | O_NOCTTY);
3748
3989
 
3749
3990
  bool quit_now = false;
3750
3991
  __attribute__((cleanup(cleanup_queue)))
3929
4170
  const size_t ievent_max_size = (sizeof(struct inotify_event)
3930
4171
                                  + NAME_MAX + 1);
3931
4172
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
3932
 
  char ievent_buffer[sizeof(struct inotify_event) + NAME_MAX + 1];
3933
 
  struct inotify_event *ievent = ((struct inotify_event *)
3934
 
                                  ievent_buffer);
 
4173
  struct {
 
4174
    struct inotify_event event;
 
4175
    char name_buffer[NAME_MAX + 1];
 
4176
  } ievent_buffer;
 
4177
  struct inotify_event *const ievent = &ievent_buffer.event;
3935
4178
 
3936
4179
  const char dummy_file_name[] = "ask.dummy_file_name";
3937
4180
  ievent->mask = IN_CLOSE_WRITE;
3939
4182
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
3940
4183
  const size_t ievent_size = (sizeof(struct inotify_event)
3941
4184
                              + sizeof(dummy_file_name));
3942
 
  g_assert_cmpint(write(pipefds[1], ievent_buffer, ievent_size),
 
4185
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
3943
4186
                  ==, ievent_size);
3944
4187
  g_assert_cmpint(close(pipefds[1]), ==, 0);
3945
4188
 
4022
4265
  const size_t ievent_max_size = (sizeof(struct inotify_event)
4023
4266
                                  + NAME_MAX + 1);
4024
4267
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
4025
 
  char ievent_buffer[sizeof(struct inotify_event) + NAME_MAX + 1];
4026
 
  struct inotify_event *ievent = ((struct inotify_event *)
4027
 
                                  ievent_buffer);
 
4268
  struct {
 
4269
    struct inotify_event event;
 
4270
    char name_buffer[NAME_MAX + 1];
 
4271
  } ievent_buffer;
 
4272
  struct inotify_event *const ievent = &ievent_buffer.event;
4028
4273
 
4029
4274
  const char dummy_file_name[] = "ask.dummy_file_name";
4030
4275
  ievent->mask = IN_MOVED_TO;
4032
4277
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
4033
4278
  const size_t ievent_size = (sizeof(struct inotify_event)
4034
4279
                              + sizeof(dummy_file_name));
4035
 
  g_assert_cmpint(write(pipefds[1], ievent_buffer, ievent_size),
 
4280
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
4036
4281
                  ==, ievent_size);
4037
4282
  g_assert_cmpint(close(pipefds[1]), ==, 0);
4038
4283
 
4098
4343
      }));
4099
4344
}
4100
4345
 
 
4346
static
 
4347
void test_read_inotify_event_IN_MOVED_FROM(__attribute__((unused))
 
4348
                                           test_fixture *fixture,
 
4349
                                           __attribute__((unused))
 
4350
                                           gconstpointer 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[] = "ask.dummy_file_name";
 
4372
  ievent->mask = IN_MOVED_FROM;
 
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_true(string_set_contains(*task.cancelled_filenames,
 
4428
                                    filename));
 
4429
}
 
4430
 
4101
4431
static void test_read_inotify_event_IN_DELETE(__attribute__((unused))
4102
4432
                                              test_fixture *fixture,
4103
4433
                                              __attribute__((unused))
4117
4447
  const size_t ievent_max_size = (sizeof(struct inotify_event)
4118
4448
                                  + NAME_MAX + 1);
4119
4449
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
4120
 
  char ievent_buffer[sizeof(struct inotify_event) + NAME_MAX + 1];
4121
 
  struct inotify_event *ievent = ((struct inotify_event *)
4122
 
                                  ievent_buffer);
 
4450
  struct {
 
4451
    struct inotify_event event;
 
4452
    char name_buffer[NAME_MAX + 1];
 
4453
  } ievent_buffer;
 
4454
  struct inotify_event *const ievent = &ievent_buffer.event;
4123
4455
 
4124
4456
  const char dummy_file_name[] = "ask.dummy_file_name";
4125
4457
  ievent->mask = IN_DELETE;
4127
4459
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
4128
4460
  const size_t ievent_size = (sizeof(struct inotify_event)
4129
4461
                              + sizeof(dummy_file_name));
4130
 
  g_assert_cmpint(write(pipefds[1], ievent_buffer, ievent_size),
 
4462
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
4131
4463
                  ==, ievent_size);
4132
4464
  g_assert_cmpint(close(pipefds[1]), ==, 0);
4133
4465
 
4199
4531
  const size_t ievent_max_size = (sizeof(struct inotify_event)
4200
4532
                                  + NAME_MAX + 1);
4201
4533
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
4202
 
  char ievent_buffer[sizeof(struct inotify_event) + NAME_MAX + 1];
4203
 
  struct inotify_event *ievent = ((struct inotify_event *)
4204
 
                                  ievent_buffer);
 
4534
  struct {
 
4535
    struct inotify_event event;
 
4536
    char name_buffer[NAME_MAX + 1];
 
4537
  } ievent_buffer;
 
4538
  struct inotify_event *const ievent = &ievent_buffer.event;
4205
4539
 
4206
4540
  const char dummy_file_name[] = "ignored.dummy_file_name";
4207
4541
  ievent->mask = IN_CLOSE_WRITE;
4209
4543
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
4210
4544
  const size_t ievent_size = (sizeof(struct inotify_event)
4211
4545
                              + sizeof(dummy_file_name));
4212
 
  g_assert_cmpint(write(pipefds[1], ievent_buffer, ievent_size),
 
4546
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
4213
4547
                  ==, ievent_size);
4214
4548
  g_assert_cmpint(close(pipefds[1]), ==, 0);
4215
4549
 
4273
4607
  const size_t ievent_max_size = (sizeof(struct inotify_event)
4274
4608
                                  + NAME_MAX + 1);
4275
4609
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
4276
 
  char ievent_buffer[sizeof(struct inotify_event) + NAME_MAX + 1];
4277
 
  struct inotify_event *ievent = ((struct inotify_event *)
4278
 
                                  ievent_buffer);
 
4610
  struct {
 
4611
    struct inotify_event event;
 
4612
    char name_buffer[NAME_MAX + 1];
 
4613
  } ievent_buffer;
 
4614
  struct inotify_event *const ievent = &ievent_buffer.event;
4279
4615
 
4280
4616
  const char dummy_file_name[] = "ignored.dummy_file_name";
4281
4617
  ievent->mask = IN_MOVED_TO;
4283
4619
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
4284
4620
  const size_t ievent_size = (sizeof(struct inotify_event)
4285
4621
                              + sizeof(dummy_file_name));
4286
 
  g_assert_cmpint(write(pipefds[1], ievent_buffer, ievent_size),
 
4622
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
4287
4623
                  ==, ievent_size);
4288
4624
  g_assert_cmpint(close(pipefds[1]), ==, 0);
4289
4625
 
4330
4666
                                   EPOLLIN | EPOLLRDHUP));
4331
4667
}
4332
4668
 
 
4669
static void
 
4670
test_read_inotify_event_IN_MOVED_FROM_badname(__attribute__((unused))
 
4671
                                              test_fixture *fixture,
 
4672
                                              __attribute__((unused))
 
4673
                                              gconstpointer
 
4674
                                              user_data){
 
4675
  __attribute__((cleanup(cleanup_close)))
 
4676
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
4677
  g_assert_cmpint(epoll_fd, >=, 0);
 
4678
  __attribute__((cleanup(string_set_clear)))
 
4679
    string_set cancelled_filenames = {};
 
4680
  const mono_microsecs current_time = 0;
 
4681
 
 
4682
  int pipefds[2];
 
4683
  g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);
 
4684
 
 
4685
  /* "sufficient to read at least one event." - inotify(7) */
 
4686
  const size_t ievent_max_size = (sizeof(struct inotify_event)
 
4687
                                  + NAME_MAX + 1);
 
4688
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
 
4689
  struct {
 
4690
    struct inotify_event event;
 
4691
    char name_buffer[NAME_MAX + 1];
 
4692
  } ievent_buffer;
 
4693
  struct inotify_event *const ievent = &ievent_buffer.event;
 
4694
 
 
4695
  const char dummy_file_name[] = "ignored.dummy_file_name";
 
4696
  ievent->mask = IN_MOVED_FROM;
 
4697
  ievent->len = sizeof(dummy_file_name);
 
4698
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
 
4699
  const size_t ievent_size = (sizeof(struct inotify_event)
 
4700
                              + sizeof(dummy_file_name));
 
4701
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
 
4702
                  ==, ievent_size);
 
4703
  g_assert_cmpint(close(pipefds[1]), ==, 0);
 
4704
 
 
4705
  bool quit_now = false;
 
4706
  buffer password = {};
 
4707
  bool mandos_client_exited = false;
 
4708
  bool password_is_read = false;
 
4709
  __attribute__((cleanup(cleanup_queue)))
 
4710
    task_queue *queue = create_queue();
 
4711
  g_assert_nonnull(queue);
 
4712
 
 
4713
  task_context task = {
 
4714
    .func=read_inotify_event,
 
4715
    .epoll_fd=epoll_fd,
 
4716
    .fd=pipefds[0],
 
4717
    .quit_now=&quit_now,
 
4718
    .password=&password,
 
4719
    .filename=strdup("/nonexistent"),
 
4720
    .cancelled_filenames=&cancelled_filenames,
 
4721
    .current_time=&current_time,
 
4722
    .mandos_client_exited=&mandos_client_exited,
 
4723
    .password_is_read=&password_is_read,
 
4724
  };
 
4725
  task.func(task, queue);
 
4726
  g_assert_false(quit_now);
 
4727
  g_assert_true(queue->next_run == 0);
 
4728
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
 
4729
 
 
4730
  g_assert_nonnull(find_matching_task(queue, (task_context){
 
4731
        .func=read_inotify_event,
 
4732
        .epoll_fd=epoll_fd,
 
4733
        .fd=pipefds[0],
 
4734
        .quit_now=&quit_now,
 
4735
        .password=&password,
 
4736
        .filename=task.filename,
 
4737
        .cancelled_filenames=&cancelled_filenames,
 
4738
        .current_time=&current_time,
 
4739
        .mandos_client_exited=&mandos_client_exited,
 
4740
        .password_is_read=&password_is_read,
 
4741
      }));
 
4742
 
 
4743
  g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],
 
4744
                                   EPOLLIN | EPOLLRDHUP));
 
4745
 
 
4746
  __attribute__((cleanup(cleanup_string)))
 
4747
    char *filename = NULL;
 
4748
  g_assert_cmpint(asprintf(&filename, "%s/%s", task.filename,
 
4749
                           dummy_file_name), >, 0);
 
4750
  g_assert_nonnull(filename);
 
4751
  g_assert_false(string_set_contains(cancelled_filenames, filename));
 
4752
}
 
4753
 
4333
4754
static
4334
4755
void test_read_inotify_event_IN_DELETE_badname(__attribute__((unused))
4335
4756
                                               test_fixture *fixture,
4350
4771
  const size_t ievent_max_size = (sizeof(struct inotify_event)
4351
4772
                                  + NAME_MAX + 1);
4352
4773
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
4353
 
  char ievent_buffer[sizeof(struct inotify_event) + NAME_MAX + 1];
4354
 
  struct inotify_event *ievent = ((struct inotify_event *)
4355
 
                                  ievent_buffer);
 
4774
  struct {
 
4775
    struct inotify_event event;
 
4776
    char name_buffer[NAME_MAX + 1];
 
4777
  } ievent_buffer;
 
4778
  struct inotify_event *const ievent = &ievent_buffer.event;
4356
4779
 
4357
4780
  const char dummy_file_name[] = "ignored.dummy_file_name";
4358
4781
  ievent->mask = IN_DELETE;
4360
4783
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
4361
4784
  const size_t ievent_size = (sizeof(struct inotify_event)
4362
4785
                              + sizeof(dummy_file_name));
4363
 
  g_assert_cmpint(write(pipefds[1], ievent_buffer, ievent_size),
 
4786
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
4364
4787
                  ==, ievent_size);
4365
4788
  g_assert_cmpint(close(pipefds[1]), ==, 0);
4366
4789
 
5253
5676
                                            __attribute__((unused))
5254
5677
                                            gconstpointer user_data){
5255
5678
  __attribute__((cleanup(cleanup_close)))
5256
 
    const int epoll_fd = open("/dev/null", O_WRONLY | O_CLOEXEC);
 
5679
    const int epoll_fd = open("/dev/null",
 
5680
                              O_WRONLY | O_CLOEXEC | O_NOCTTY);
5257
5681
  __attribute__((cleanup(cleanup_string)))
5258
5682
    char *const question_filename = strdup("/nonexistent/question");
5259
5683
  g_assert_nonnull(question_filename);
5388
5812
  char write_data[PIPE_BUF];
5389
5813
  {
5390
5814
    /* Construct test password buffer */
5391
 
    /* Start with + since that is what the real procotol uses */
 
5815
    /* Start with + since that is what the real protocol uses */
5392
5816
    write_data[0] = '+';
5393
5817
    /* Set a special character at string end just to mark the end */
5394
5818
    write_data[sizeof(write_data)-2] = 'y';
5546
5970
  char *const filename = strdup("/nonexistent/socket");
5547
5971
  __attribute__((cleanup(string_set_clear)))
5548
5972
    string_set cancelled_filenames = {};
5549
 
  const size_t oversized = 1024*1024; /* Limit seems to be 212960 */
5550
 
  __attribute__((cleanup(cleanup_buffer)))
5551
 
    buffer password = {
5552
 
    .data=malloc(oversized),
5553
 
    .length=oversized,
5554
 
    .allocated=oversized,
 
5973
  int socketfds[2];
 
5974
 
 
5975
  /* Find a message size which triggers EMSGSIZE */
 
5976
  __attribute__((cleanup(cleanup_string)))
 
5977
    char *message_buffer = NULL;
 
5978
  size_t message_size = PIPE_BUF + 1;
 
5979
  for(ssize_t ssret = 0; ssret >= 0; message_size += 1024){
 
5980
    if(message_size >= 1024*1024*1024){ /* 1 GiB */
 
5981
      g_test_skip("Skipping EMSGSIZE test: Will not try 1GiB");
 
5982
      return;
 
5983
    }
 
5984
    message_buffer = realloc(message_buffer, message_size);
 
5985
    if(message_buffer == NULL){
 
5986
      g_test_skip("Skipping EMSGSIZE test");
 
5987
      g_test_message("Failed to malloc() %" PRIuMAX " bytes",
 
5988
                     (uintmax_t)message_size);
 
5989
      return;
 
5990
    }
 
5991
    /* Fill buffer with 'x' */
 
5992
    memset(message_buffer, 'x', message_size);
 
5993
    /* Create a new socketpair for each message size to avoid having
 
5994
       to empty the pipe by reading the message to a separate buffer
 
5995
    */
 
5996
    g_assert_cmpint(socketpair(PF_LOCAL, SOCK_DGRAM
 
5997
                               | SOCK_NONBLOCK | SOCK_CLOEXEC, 0,
 
5998
                               socketfds), ==, 0);
 
5999
    ssret = send(socketfds[1], message_buffer, message_size,
 
6000
                 MSG_NOSIGNAL);
 
6001
    error_t saved_errno = errno;
 
6002
    g_assert_cmpint(close(socketfds[0]), ==, 0);
 
6003
    g_assert_cmpint(close(socketfds[1]), ==, 0);
 
6004
 
 
6005
    if(ssret < 0){
 
6006
      if(saved_errno != EMSGSIZE) {
 
6007
        g_test_skip("Skipping EMSGSIZE test");
 
6008
        g_test_message("Error on send(%" PRIuMAX " bytes): %s",
 
6009
                       (uintmax_t)message_size,
 
6010
                       strerror(saved_errno));
 
6011
        return;
 
6012
      }
 
6013
      break;
 
6014
    } else if(ssret != (ssize_t)message_size){
 
6015
      g_test_skip("Skipping EMSGSIZE test");
 
6016
      g_test_message("Partial send(): %" PRIuMAX " of %" PRIdMAX
 
6017
                     " bytes", (uintmax_t)ssret,
 
6018
                     (intmax_t)message_size);
 
6019
      return;
 
6020
    }
 
6021
  }
 
6022
  g_test_message("EMSGSIZE triggered by %" PRIdMAX " bytes",
 
6023
                 (intmax_t)message_size);
 
6024
 
 
6025
  buffer password = {
 
6026
    .data=message_buffer,
 
6027
    .length=message_size - 2,   /* Compensate for added '+' and NUL */
 
6028
    .allocated=message_size,
5555
6029
  };
5556
 
  g_assert_nonnull(password.data);
5557
6030
  if(mlock(password.data, password.allocated) != 0){
5558
6031
    g_assert_true(errno == EPERM or errno == ENOMEM);
5559
6032
  }
5560
 
  /* Construct test password buffer */
5561
 
  /* Start with + since that is what the real procotol uses */
5562
 
  password.data[0] = '+';
5563
 
  /* Set a special character at string end just to mark the end */
5564
 
  password.data[oversized-3] = 'y';
5565
 
  /* Set NUL at buffer end, as suggested by the protocol */
5566
 
  password.data[oversized-2] = '\0';
5567
 
  /* Fill rest of password with 'x' */
5568
 
  memset(password.data+1, 'x', oversized-3);
5569
6033
 
5570
6034
  __attribute__((cleanup(cleanup_queue)))
5571
6035
    task_queue *queue = create_queue();
5572
6036
  g_assert_nonnull(queue);
5573
 
  int socketfds[2];
5574
6037
  g_assert_cmpint(socketpair(PF_LOCAL, SOCK_DGRAM
5575
6038
                             | SOCK_NONBLOCK | SOCK_CLOEXEC, 0,
5576
6039
                             socketfds), ==, 0);
5663
6126
                                            __attribute__((unused))
5664
6127
                                            gconstpointer user_data){
5665
6128
  __attribute__((cleanup(cleanup_close)))
5666
 
    const int epoll_fd = open("/dev/null", O_WRONLY | O_CLOEXEC);
 
6129
    const int epoll_fd = open("/dev/null",
 
6130
                              O_WRONLY | O_CLOEXEC | O_NOCTTY);
5667
6131
  __attribute__((cleanup(cleanup_string)))
5668
6132
    char *const question_filename = strdup("/nonexistent/question");
5669
6133
  g_assert_nonnull(question_filename);
5932
6396
                                              const char *const
5933
6397
                                              dirname){
5934
6398
  __attribute__((cleanup(cleanup_close)))
5935
 
    const int devnull_fd = open("/dev/null", O_WRONLY | O_CLOEXEC);
 
6399
    const int devnull_fd = open("/dev/null",
 
6400
                                O_WRONLY | O_CLOEXEC | O_NOCTTY);
5936
6401
  g_assert_cmpint(devnull_fd, >=, 0);
5937
6402
  __attribute__((cleanup(cleanup_close)))
5938
6403
    const int real_stderr_fd = dup(STDERR_FILENO);
7481
7946
  test_add("/parse_arguments/mixed", test_parse_arguments_mixed);
7482
7947
  test_add("/queue/create", test_create_queue);
7483
7948
  test_add("/queue/add", test_add_to_queue);
 
7949
  test_add("/queue/add/overflow", test_add_to_queue_overflow);
7484
7950
  test_add("/queue/has_question/empty",
7485
7951
           test_queue_has_question_empty);
7486
7952
  test_add("/queue/has_question/false",
7573
8039
              test_add_inotify_dir_watch);
7574
8040
  test_add_st("/task-creators/add_inotify_dir_watch/fail",
7575
8041
              test_add_inotify_dir_watch_fail);
 
8042
  test_add_st("/task-creators/add_inotify_dir_watch/not-a-directory",
 
8043
              test_add_inotify_dir_watch_nondir);
7576
8044
  test_add_st("/task-creators/add_inotify_dir_watch/EAGAIN",
7577
8045
              test_add_inotify_dir_watch_EAGAIN);
7578
8046
  test_add_st("/task-creators/add_inotify_dir_watch/IN_CLOSE_WRITE",
7579
8047
              test_add_inotify_dir_watch_IN_CLOSE_WRITE);
7580
8048
  test_add_st("/task-creators/add_inotify_dir_watch/IN_MOVED_TO",
7581
8049
              test_add_inotify_dir_watch_IN_MOVED_TO);
 
8050
  test_add_st("/task-creators/add_inotify_dir_watch/IN_MOVED_FROM",
 
8051
              test_add_inotify_dir_watch_IN_MOVED_FROM);
 
8052
  test_add_st("/task-creators/add_inotify_dir_watch/IN_EXCL_UNLINK",
 
8053
              test_add_inotify_dir_watch_IN_EXCL_UNLINK);
7582
8054
  test_add_st("/task-creators/add_inotify_dir_watch/IN_DELETE",
7583
8055
              test_add_inotify_dir_watch_IN_DELETE);
7584
8056
  test_add_st("/task/read_inotify_event/readerror",
7593
8065
              test_read_inotify_event_IN_CLOSE_WRITE);
7594
8066
  test_add_st("/task/read_inotify_event/IN_MOVED_TO",
7595
8067
              test_read_inotify_event_IN_MOVED_TO);
 
8068
  test_add_st("/task/read_inotify_event/IN_MOVED_FROM",
 
8069
              test_read_inotify_event_IN_MOVED_FROM);
7596
8070
  test_add_st("/task/read_inotify_event/IN_DELETE",
7597
8071
              test_read_inotify_event_IN_DELETE);
7598
8072
  test_add_st("/task/read_inotify_event/IN_CLOSE_WRITE/badname",
7599
8073
              test_read_inotify_event_IN_CLOSE_WRITE_badname);
7600
8074
  test_add_st("/task/read_inotify_event/IN_MOVED_TO/badname",
7601
8075
              test_read_inotify_event_IN_MOVED_TO_badname);
 
8076
  test_add_st("/task/read_inotify_event/IN_MOVED_FROM/badname",
 
8077
              test_read_inotify_event_IN_MOVED_FROM_badname);
7602
8078
  test_add_st("/task/read_inotify_event/IN_DELETE/badname",
7603
8079
              test_read_inotify_event_IN_DELETE_badname);
7604
8080
  test_add_st("/task/open_and_parse_question/ENOENT",
7701
8177
  g_option_context_set_help_enabled(context, FALSE);
7702
8178
  g_option_context_set_ignore_unknown_options(context, TRUE);
7703
8179
 
7704
 
  gboolean run_tests = FALSE;
 
8180
  gboolean should_run_tests = FALSE;
7705
8181
  GOptionEntry entries[] = {
7706
8182
    { "test", 0, 0, G_OPTION_ARG_NONE,
7707
 
      &run_tests, "Run tests", NULL },
 
8183
      &should_run_tests, "Run tests", NULL },
7708
8184
    { NULL }
7709
8185
  };
7710
8186
  g_option_context_add_main_entries(context, entries, NULL);
7717
8193
  }
7718
8194
 
7719
8195
  g_option_context_free(context);
7720
 
  return run_tests != FALSE;
 
8196
  return should_run_tests != FALSE;
7721
8197
}