/mandos/trunk : revision 505.1.14

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/* -*- coding: utf-8; lexical-binding: t -*- */

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/*

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* Mandos password agent - Simple password agent to run Mandos client

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*

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*

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* This file is part of Mandos.

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*

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* Mandos is free software: you can redistribute it and/or modify it

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* under the terms of the GNU General Public License as published by

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* the Free Software Foundation, either version 3 of the License, or

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* (at your option) any later version.

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*

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* Mandos is distributed in the hope that it will be useful, but

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* WITHOUT ANY WARRANTY; without even the implied warranty of

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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

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* General Public License for more details.

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*

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* You should have received a copy of the GNU General Public License

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* along with Mandos. If not, see <http://www.gnu.org/licenses/>.

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*

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* Contact the authors at <mandos@recompile.se>.

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*/

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#define _GNU_SOURCE /* pipe2(), O_CLOEXEC, setresgid(),

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setresuid(), asprintf(), getline(),

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basename() */

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#include <inttypes.h> /* uintmax_t, strtoumax(), PRIuMAX,

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PRIdMAX, intmax_t, uint32_t,

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SCNx32, SCNuMAX, SCNxMAX */

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#include <stddef.h> /* size_t, NULL */

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#include <sys/types.h> /* pid_t, uid_t, gid_t, getuid(),

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getpid() */

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#include <stdbool.h> /* bool, true, false */

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#include <signal.h> /* struct sigaction, sigset_t,

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sigemptyset(), sigaddset(),

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SIGCHLD, pthread_sigmask(),

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SIG_BLOCK, SIG_SETMASK, SA_RESTART,

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SA_NOCLDSTOP, sigfillset(), kill(),

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SIGTERM, sigdelset(), SIGKILL,

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NSIG, sigismember(), SA_ONSTACK,

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SIG_DFL, SIG_IGN, SIGINT, SIGQUIT,

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SIGHUP, SIGSTOP, SIG_UNBLOCK */

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#include <unistd.h> /* uid_t, gid_t, close(), pipe2(),

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fork(), _exit(), dup2(),

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STDOUT_FILENO, setresgid(),

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setresuid(), execv(), ssize_t,

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read(), dup3(), getuid(), dup(),

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STDERR_FILENO, pause(), write(),

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rmdir(), unlink(), getpid() */

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#include <stdlib.h> /* EXIT_SUCCESS, EXIT_FAILURE,

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malloc(), free(), realloc(),

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setenv(), calloc(), mkdtemp(),

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mkostemp() */

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#include <iso646.h> /* not, or, and, xor */

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#include <error.h> /* error() */

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#include <sysexits.h> /* EX_USAGE, EX_OSERR, EX_OSFILE */

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#include <errno.h> /* errno, error_t, EACCES,

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ENAMETOOLONG, ENOENT, ENOTDIR,

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ENOMEM, EEXIST, ECHILD, EPERM,

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EAGAIN, EINTR, ENOBUFS, EADDRINUSE,

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ECONNREFUSED, ECONNRESET,

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ETOOMANYREFS, EMSGSIZE, EBADF,

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EINVAL */

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#include <string.h> /* strdup(), memcpy(),

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explicit_bzero(), memset(),

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strcmp(), strlen(), strncpy(),

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memcmp(), basename(), strerror() */

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#include <argz.h> /* argz_create(), argz_count(),

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argz_extract(), argz_next(),

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argz_add() */

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#include <sys/epoll.h> /* epoll_create1(), EPOLL_CLOEXEC,

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epoll_ctl(), EPOLL_CTL_ADD,

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struct epoll_event, EPOLLIN,

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EPOLLRDHUP, EPOLLOUT,

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epoll_pwait() */

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#include <time.h> /* struct timespec, clock_gettime(),

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CLOCK_MONOTONIC */

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#include <argp.h> /* struct argp_option, OPTION_HIDDEN,

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OPTION_ALIAS, struct argp_state,

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ARGP_ERR_UNKNOWN, ARGP_KEY_ARGS,

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struct argp, argp_parse(),

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ARGP_NO_EXIT */

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#include <stdint.h> /* SIZE_MAX, uint32_t */

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#include <sys/mman.h> /* munlock(), mlock() */

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#include <fcntl.h> /* O_CLOEXEC, O_NONBLOCK, fcntl(),

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F_GETFD, F_GETFL, FD_CLOEXEC,

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open(), O_WRONLY, O_NOCTTY,

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O_RDONLY, O_NOFOLLOW */

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#include <sys/wait.h> /* waitpid(), WNOHANG, WIFEXITED(),

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WEXITSTATUS() */

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#include <limits.h> /* PIPE_BUF, NAME_MAX, INT_MAX */

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#include <sys/inotify.h> /* inotify_init1(), IN_NONBLOCK,

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IN_CLOEXEC, inotify_add_watch(),

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IN_CLOSE_WRITE, IN_MOVED_TO,

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IN_MOVED_FROM, IN_DELETE,

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IN_EXCL_UNLINK, IN_ONLYDIR,

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struct inotify_event */

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#include <fnmatch.h> /* fnmatch(), FNM_FILE_NAME */

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#include <stdio.h> /* asprintf(), FILE, stderr, fopen(),

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fclose(), getline(), sscanf(),

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feof(), ferror(), rename(),

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fdopen(), fprintf(), fscanf() */

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#include <glib.h> /* GKeyFile, g_key_file_free(), g_key_file_new(),

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GError, g_key_file_load_from_file(),

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G_KEY_FILE_NONE, TRUE, G_FILE_ERROR_NOENT,

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g_key_file_get_string(), guint64,

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g_key_file_get_uint64(),

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G_KEY_FILE_ERROR_KEY_NOT_FOUND, gconstpointer,

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g_assert_true(), g_assert_nonnull(),

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g_assert_null(), g_assert_false(),

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g_assert_cmpint(), g_assert_cmpuint(),

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g_test_skip(), g_assert_cmpstr(),

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g_test_message(), g_test_init(), g_test_add(),

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g_test_run(), GOptionContext,

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g_option_context_new(),

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g_option_context_set_help_enabled(), FALSE,

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g_option_context_set_ignore_unknown_options(),

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gboolean, GOptionEntry, G_OPTION_ARG_NONE,

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g_option_context_add_main_entries(),

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g_option_context_parse(),

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g_option_context_free(), g_error() */

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#include <sys/un.h> /* struct sockaddr_un, SUN_LEN */

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#include <sys/socket.h> /* AF_LOCAL, socket(), PF_LOCAL,

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SOCK_DGRAM, SOCK_NONBLOCK,

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SOCK_CLOEXEC, connect(),

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struct sockaddr, socklen_t,

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shutdown(), SHUT_RD, send(),

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MSG_NOSIGNAL, bind(), recv(),

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socketpair() */

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#include <glob.h> /* globfree(), glob_t, glob(),

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GLOB_ERR, GLOB_NOSORT, GLOB_MARK,

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GLOB_ABORTED, GLOB_NOMATCH,

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GLOB_NOSPACE */

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/* End of includes */

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/* Start of declarations of private types and functions */

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/* microseconds of CLOCK_MONOTONIC absolute time; 0 means unset */

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typedef uintmax_t mono_microsecs;

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/* "task_queue" - A queue of tasks to be run */

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typedef struct {

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struct task_struct *tasks; /* Tasks in this queue */

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size_t length; /* Number of tasks */

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/* Memory allocated for "tasks", in bytes */

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size_t allocated;

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/* Time when this queue should be run, at the latest */

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mono_microsecs next_run;

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} __attribute__((designated_init)) task_queue;

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/* "task_func" - A function type for task functions

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I.e. functions for the code which runs when a task is run, all have

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this type */

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typedef void (task_func) (const struct task_struct,

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task_queue *const)

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__attribute__((nonnull));

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/* "buffer" - A data buffer for a growing array of bytes

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Used for the "password" variable */

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typedef struct {

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char *data;

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size_t length;

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size_t allocated;

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} __attribute__((designated_init)) buffer;

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/* "string_set" - A set type which can contain strings

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Used by the "cancelled_filenames" variable */

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typedef struct {

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char *argz; /* Do not access these except in */

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size_t argz_len; /* the string_set_* functions */

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} __attribute__((designated_init)) string_set;

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/* "task_context" - local variables for tasks

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This data structure distinguishes between different tasks which are

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using the same function. This data structure is passed to every

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task function when each task is run.

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Note that not every task uses every struct member. */

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typedef struct task_struct {

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task_func *const func; /* The function run by this task */

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char *const question_filename; /* The question file */

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const pid_t pid; /* Mandos client process ID */

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const int epoll_fd; /* The epoll set file descriptor */

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bool *const quit_now; /* Set to true on fatal errors */

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const int fd; /* General purpose file descriptor */

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bool *const mandos_client_exited; /* Set true when client exits */

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buffer *const password; /* As read from client process */

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bool *const password_is_read; /* "password" is done growing */

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char *filename; /* General purpose file name */

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/* A set of strings of all the file names of questions which have

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been cancelled for any reason; tasks pertaining to these question

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files should not be run */

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string_set *const cancelled_filenames;

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const mono_microsecs notafter; /* "NotAfter" from question file */

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/* Updated before each queue run; is compared with queue.next_run */

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const mono_microsecs *const current_time;

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} __attribute__((designated_init)) task_context;

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/* Declare all our functions here so we can define them in any order

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below. Note: test functions are *not* declared here, they are

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declared in the test section. */

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__attribute__((warn_unused_result))

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static bool should_only_run_tests(int *, char **[]);

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__attribute__((warn_unused_result, cold))

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static bool run_tests(int, char *[]);

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static void handle_sigchld(__attribute__((unused)) int sig){}

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__attribute__((warn_unused_result, malloc))

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task_queue *create_queue(void);

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__attribute__((nonnull, warn_unused_result))

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bool add_to_queue(task_queue *const, const task_context);

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__attribute__((nonnull))

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void cleanup_task(const task_context *const);

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__attribute__((nonnull))

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void cleanup_queue(task_queue *const *const);

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__attribute__((pure, nonnull, warn_unused_result))

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bool queue_has_question(const task_queue *const);

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__attribute__((nonnull))

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void cleanup_close(const int *const);

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__attribute__((nonnull))

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void cleanup_string(char *const *const);

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__attribute__((nonnull))

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void cleanup_buffer(buffer *const);

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__attribute__((pure, nonnull, warn_unused_result))

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bool string_set_contains(const string_set, const char *const);

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__attribute__((nonnull, warn_unused_result))

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bool string_set_add(string_set *const, const char *const);

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__attribute__((nonnull))

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void string_set_clear(string_set *);

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void string_set_swap(string_set *const, string_set *const);

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__attribute__((nonnull, warn_unused_result))

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bool start_mandos_client(task_queue *const, const int, bool *const,

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bool *const, buffer *const, bool *const,

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const struct sigaction *const,

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const sigset_t, const char *const,

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const uid_t, const gid_t,

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const char *const *const);

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__attribute__((nonnull))

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task_func wait_for_mandos_client_exit;

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__attribute__((nonnull))

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task_func read_mandos_client_output;

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__attribute__((warn_unused_result))

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bool add_inotify_dir_watch(task_queue *const, const int, bool *const,

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buffer *const, const char *const,

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string_set *, const mono_microsecs *const,

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bool *const, bool *const);

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__attribute__((nonnull))

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task_func read_inotify_event;

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__attribute__((nonnull))

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task_func open_and_parse_question;

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__attribute__((nonnull))

258

task_func cancel_old_question;

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__attribute__((nonnull))

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task_func connect_question_socket;

261

__attribute__((nonnull))

262

task_func send_password_to_socket;

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__attribute__((warn_unused_result))

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bool add_existing_questions(task_queue *const, const int,

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buffer *const, string_set *,

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const mono_microsecs *const,

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bool *const, bool *const,

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const char *const);

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__attribute__((nonnull, warn_unused_result))

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bool wait_for_event(const int, const mono_microsecs,

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const mono_microsecs);

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bool run_queue(task_queue **const, string_set *const, bool *const);

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bool clear_all_fds_from_epoll_set(const int);

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mono_microsecs get_current_time(void);

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__attribute__((nonnull, warn_unused_result))

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bool setup_signal_handler(struct sigaction *const);

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__attribute__((nonnull))

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bool restore_signal_handler(const struct sigaction *const);

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__attribute__((nonnull, warn_unused_result))

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bool block_sigchld(sigset_t *const);

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__attribute__((nonnull))

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bool restore_sigmask(const sigset_t *const);

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__attribute__((nonnull))

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bool parse_arguments(int, char *[], const bool, char **, char **,

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uid_t *const , gid_t *const, char **, size_t *);

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/* End of declarations of private types and functions */

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/* Start of "main" section; this section LACKS TESTS!

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Code here should be as simple as possible. */

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/* These are required to be global by Argp */

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const char *argp_program_version = "password-agent " VERSION;

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const char *argp_program_bug_address = "<mandos@recompile.se>";

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297

int main(int argc, char *argv[]){

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/* If the --test option is passed, skip all normal operations and

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instead only run the run_tests() function, which also does all

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its own option parsing, so we don't have to do anything here. */

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if(should_only_run_tests(&argc, &argv)){

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if(run_tests(argc, argv)){

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return EXIT_SUCCESS; /* All tests successful */

305

}

306

return EXIT_FAILURE; /* Some test(s) failed */

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}

308

309

__attribute__((cleanup(cleanup_string)))

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char *agent_directory = NULL;

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__attribute__((cleanup(cleanup_string)))

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char *helper_directory = NULL;

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315

uid_t user = 0;

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gid_t group = 0;

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__attribute__((cleanup(cleanup_string)))

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char *mandos_argz = NULL;

320

size_t mandos_argz_length = 0;

321

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if(not parse_arguments(argc, argv, true, &agent_directory,

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&helper_directory, &user, &group,

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&mandos_argz, &mandos_argz_length)){

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/* This should never happen, since "true" is passed as the third

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argument to parse_arguments() above, which should make

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argp_parse() call exit() if any parsing error occurs. */

328

error(EX_USAGE, errno, "Failed to parse arguments");

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}

330

331

const char default_agent_directory[] = "/run/systemd/ask-password";

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const char default_helper_directory[]

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= "/lib/mandos/plugin-helpers";

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const char *const default_argv[]

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= {"/lib/mandos/plugins.d/mandos-client", NULL };

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/* Set variables to default values if unset */

338

if(agent_directory == NULL){

339

agent_directory = strdup(default_agent_directory);

340

if(agent_directory == NULL){

341

error(EX_OSERR, errno, "Failed strdup()");

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}

343

}

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if(helper_directory == NULL){

345

helper_directory = strdup(default_helper_directory);

346

if(helper_directory == NULL){

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error(EX_OSERR, errno, "Failed strdup()");

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}

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}

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if(user == 0){

351

user = 65534; /* nobody */

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}

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if(group == 0){

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group = 65534; /* nogroup */

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}

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/* If parse_opt did not create an argz vector, create one with

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default values */

358

if(mandos_argz == NULL){

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#ifdef __GNUC__

360

#pragma GCC diagnostic push

361

/* argz_create() takes a non-const argv for some unknown reason -

362

argz_create() isn't modifying the strings, just copying them.

363

Therefore, this cast to non-const should be safe. */

364

#pragma GCC diagnostic ignored "-Wcast-qual"

365

#endif

366

errno = argz_create((char *const *)default_argv, &mandos_argz,

367

&mandos_argz_length);

368

#ifdef __GNUC__

369

#pragma GCC diagnostic pop

370

#endif

371

if(errno != 0){

372

error(EX_OSERR, errno, "Failed argz_create()");

373

}

374

}

375

/* Use argz vector to create a normal argv, usable by execv() */

376

377

char **mandos_argv = malloc((argz_count(mandos_argz,

378

mandos_argz_length)

379

+ 1) * sizeof(char *));

380

if(mandos_argv == NULL){

381

error_t saved_errno = errno;

382

free(mandos_argz);

383

error(EX_OSERR, saved_errno, "Failed malloc()");

384

}

385

argz_extract(mandos_argz, mandos_argz_length, mandos_argv);

386

387

sigset_t orig_sigmask;

388

if(not block_sigchld(&orig_sigmask)){

389

return EX_OSERR;

390

}

391

392

struct sigaction old_sigchld_action;

393

if(not setup_signal_handler(&old_sigchld_action)){

394

return EX_OSERR;

395

}

396

397

mono_microsecs current_time = 0;

398

399

bool mandos_client_exited = false;

400

bool quit_now = false;

401

__attribute__((cleanup(cleanup_close)))

402

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

403

if(epoll_fd < 0){

404

error(EX_OSERR, errno, "Failed to create epoll set fd");

405

}

406

__attribute__((cleanup(cleanup_queue)))

407

task_queue *queue = create_queue();

408

if(queue == NULL){

409

error(EX_OSERR, errno, "Failed to create task queue");

410

}

411

412

__attribute__((cleanup(cleanup_buffer)))

413

buffer password = {};

414

bool password_is_read = false;

415

416

__attribute__((cleanup(string_set_clear)))

417

string_set cancelled_filenames = {};

418

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/* Add tasks to queue */

420

if(not start_mandos_client(queue, epoll_fd, &mandos_client_exited,

421

&quit_now, &password, &password_is_read,

422

&old_sigchld_action, orig_sigmask,

423

helper_directory, user, group,

424

(const char *const *)mandos_argv)){

425

return EX_OSERR; /* Error has already been printed */

426

}

427

/* These variables were only for start_mandos_client() and are not

428

needed anymore */

429

free(mandos_argv);

430

free(mandos_argz);

431

mandos_argz = NULL;

432

if(not add_inotify_dir_watch(queue, epoll_fd, &quit_now, &password,

433

agent_directory, &cancelled_filenames,

434

&current_time, &mandos_client_exited,

435

&password_is_read)){

436

switch(errno){ /* Error has already been printed */

437

case EACCES:

438

case ENAMETOOLONG:

439

case ENOENT:

440

case ENOTDIR:

441

return EX_OSFILE;

442

default:

443

return EX_OSERR;

444

}

445

}

446

if(not add_existing_questions(queue, epoll_fd, &password,

447

&cancelled_filenames, &current_time,

448

&mandos_client_exited,

449

&password_is_read, agent_directory)){

450

return EXIT_FAILURE; /* Error has already been printed */

451

}

452

453

/* Run queue */

454

do {

455

current_time = get_current_time();

456

if(not wait_for_event(epoll_fd, queue->next_run, current_time)){

457

const error_t saved_errno = errno;

458

error(EXIT_FAILURE, saved_errno, "Failure while waiting for"

459

" events");

460

}

461

462

current_time = get_current_time();

463

if(not run_queue(&queue, &cancelled_filenames, &quit_now)){

464

const error_t saved_errno = errno;

465

error(EXIT_FAILURE, saved_errno, "Failure while running queue");

466

}

467

468

/* When no tasks about questions are left in the queue, break out

469

of the loop (and implicitly exit the program) */

470

} while(queue_has_question(queue));

471

472

restore_signal_handler(&old_sigchld_action);

473

restore_sigmask(&orig_sigmask);

474

475

return EXIT_SUCCESS;

476

}

477

478

__attribute__((warn_unused_result))

479

mono_microsecs get_current_time(void){

480

struct timespec currtime;

481

if(clock_gettime(CLOCK_MONOTONIC, &currtime) != 0){

482

error(0, errno, "Failed to get current time");

483

return 0;

484

}

485

return ((mono_microsecs)currtime.tv_sec * 1000000) /* seconds */

486

+ ((mono_microsecs)currtime.tv_nsec / 1000); /* nanoseconds */

487

}

488

489

/* End of "main" section */

490

491

/* Start of regular code section; ALL this code has tests */

492

493

__attribute__((nonnull))

494

bool parse_arguments(int argc, char *argv[], const bool exit_failure,

495

char **agent_directory, char **helper_directory,

496

uid_t *const user, gid_t *const group,

497

char **mandos_argz, size_t *mandos_argz_length){

498

499

const struct argp_option options[] = {

500

{ .name="agent-directory",.key='d', .arg="DIRECTORY",

501

.doc="Systemd password agent directory" },

502

{ .name="helper-directory",.key=128, .arg="DIRECTORY",

503

.doc="Mandos Client password helper directory" },

504

{ .name="plugin-helper-dir", .key=129, /* From plugin-runner */

505

.flags=OPTION_HIDDEN | OPTION_ALIAS },

506

{ .name="user", .key='u', .arg="USERID",

507

.doc="User ID the Mandos Client will use as its unprivileged"

508

" user" },

509

{ .name="userid", .key=130, /* From plugin--runner */

510

.flags=OPTION_HIDDEN | OPTION_ALIAS },

511

{ .name="group", .key='g', .arg="GROUPID",

512

.doc="Group ID the Mandos Client will use as its unprivileged"

513

" group" },

514

{ .name="groupid", .key=131, /* From plugin--runner */

515

.flags=OPTION_HIDDEN | OPTION_ALIAS },

516

{ .name="test", .key=255, /* See should_only_run_tests() */

517

.doc="Skip normal operation, and only run self-tests. See"

518

" --test --help.", .group=10, },

519

{ NULL },

520

};

521

522

__attribute__((nonnull(3)))

523

error_t parse_opt(int key, char *arg, struct argp_state *state){

524

errno = 0;

525

switch(key){

526

case 'd': /* --agent-directory */

527

*agent_directory = strdup(arg);

528

break;

529

case 128: /* --helper-directory */

530

case 129: /* --plugin-helper-dir */

531

*helper_directory = strdup(arg);

532

break;

533

case 'u': /* --user */

534

case 130: /* --userid */

535

{

536

char *tmp;

537

uintmax_t tmp_id = 0;

538

errno = 0;

539

tmp_id = (uid_t)strtoumax(arg, &tmp, 10);

540

if(errno != 0 or tmp == arg or *tmp != '\0'

541

or tmp_id != (uid_t)tmp_id or (uid_t)tmp_id == 0){

542

return ARGP_ERR_UNKNOWN;

543

}

544

*user = (uid_t)tmp_id;

545

errno = 0;

546

break;

547

}

548

case 'g': /* --group */

549

case 131: /* --groupid */

550

{

551

char *tmp;

552

uintmax_t tmp_id = 0;

553

errno = 0;

554

tmp_id = (uid_t)strtoumax(arg, &tmp, 10);

555

if(errno != 0 or tmp == arg or *tmp != '\0'

556

or tmp_id != (gid_t)tmp_id or (gid_t)tmp_id == 0){

557

return ARGP_ERR_UNKNOWN;

558

}

559

*group = (gid_t)tmp_id;

560

errno = 0;

561

break;

562

}

563

case ARGP_KEY_ARGS:

564

/* Copy arguments into argz vector */

565

return argz_create(state->argv + state->next, mandos_argz,

566

mandos_argz_length);

567

default:

568

return ARGP_ERR_UNKNOWN;

569

}

570

return errno;

571

}

572

573

const struct argp argp = {

574

.options=options,

575

.parser=parse_opt,

576

.args_doc="[MANDOS_CLIENT [OPTION...]]\n--test",

577

.doc = "Mandos password agent -- runs Mandos client as a"

578

" systemd password agent",

579

};

580

581

errno = argp_parse(&argp, argc, argv,

582

exit_failure ? 0 : ARGP_NO_EXIT, NULL, NULL);

583

584

return errno == 0;

585

}

586

587

__attribute__((nonnull, warn_unused_result))

588

bool block_sigchld(sigset_t *const orig_sigmask){

589

sigset_t sigchld_sigmask;

590

if(sigemptyset(&sigchld_sigmask) < 0){

591

error(0, errno, "Failed to empty signal set");

592

return false;

593

}

594

if(sigaddset(&sigchld_sigmask, SIGCHLD) < 0){

595

error(0, errno, "Failed to add SIGCHLD to signal set");

596

return false;

597

}

598

if(pthread_sigmask(SIG_BLOCK, &sigchld_sigmask, orig_sigmask) != 0){

599

error(0, errno, "Failed to block SIGCHLD signal");

600

return false;

601

}

602

return true;

603

}

604

605

__attribute__((nonnull, warn_unused_result, const))

606

bool restore_sigmask(const sigset_t *const orig_sigmask){

607

if(pthread_sigmask(SIG_SETMASK, orig_sigmask, NULL) != 0){

608

error(0, errno, "Failed to restore blocked signals");

609

return false;

610

}

611

return true;

612

}

613

614

__attribute__((nonnull, warn_unused_result))

615

bool setup_signal_handler(struct sigaction *const old_sigchld_action){

616

struct sigaction sigchld_action = {

617

.sa_handler=handle_sigchld,

618

.sa_flags=SA_RESTART | SA_NOCLDSTOP,

619

};

620

/* Set all signals in "sa_mask" struct member; this makes all

621

signals automatically blocked during signal handler */

622

if(sigfillset(&sigchld_action.sa_mask) != 0){

623

error(0, errno, "Failed to do sigfillset()");

624

return false;

625

}

626

if(sigaction(SIGCHLD, &sigchld_action, old_sigchld_action) != 0){

627

error(0, errno, "Failed to set SIGCHLD signal handler");

628

return false;

629

}

630

return true;

631

}

632

633

__attribute__((nonnull, warn_unused_result))

634

bool restore_signal_handler(const struct sigaction *const

635

old_sigchld_action){

636

if(sigaction(SIGCHLD, old_sigchld_action, NULL) != 0){

637

error(0, errno, "Failed to restore signal handler");

638

return false;

639

}

640

return true;

641

}

642

643

__attribute__((warn_unused_result, malloc))

644

task_queue *create_queue(void){

645

task_queue *queue = malloc(sizeof(task_queue));

646

if(queue){

647

queue->tasks = NULL;

648

queue->length = 0;

649

queue->allocated = 0;

650

queue->next_run = 0;

651

}

652

return queue;

653

}

654

655

__attribute__((nonnull, warn_unused_result))

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

}

664

const size_t needed_size = sizeof(task_context)*(queue->length + 1);

665

if(needed_size > (queue->allocated)){

666

task_context *const new_tasks = realloc(queue->tasks,

667

needed_size);

668

if(new_tasks == NULL){

669

error(0, errno, "Failed to allocate %" PRIuMAX

670

" bytes for queue->tasks", (uintmax_t)needed_size);

671

return false;

672

}

673

queue->tasks = new_tasks;

674

queue->allocated = needed_size;

675

}

676

/* Using memcpy here is necessary because doing */

677

/* queue->tasks[queue->length++] = task; */

678

/* would violate const-ness of task members */

679

memcpy(&(queue->tasks[queue->length++]), &task,

680

sizeof(task_context));

681

return true;

682

}

683

684

__attribute__((nonnull))

685

void cleanup_task(const task_context *const task){

686

const error_t saved_errno = errno;

687

/* free and close all task data */

688

free(task->question_filename);

689

if(task->filename != task->question_filename){

690

free(task->filename);

691

}

692

if(task->pid > 0){

693

kill(task->pid, SIGTERM);

694

}

695

if(task->fd > 0){

696

close(task->fd);

697

}

698

errno = saved_errno;

699

}

700

701

__attribute__((nonnull))

702

void free_queue(task_queue *const queue){

703

free(queue->tasks);

704

free(queue);

705

}

706

707

__attribute__((nonnull))

708

void cleanup_queue(task_queue *const *const queue){

709

if(*queue == NULL){

710

return;

711

}

712

for(size_t i = 0; i < (*queue)->length; i++){

713

const task_context *const task = ((*queue)->tasks)+i;

714

cleanup_task(task);

715

}

716

free_queue(*queue);

717

}

718

719

__attribute__((pure, nonnull, warn_unused_result))

720

bool queue_has_question(const task_queue *const queue){

721

for(size_t i=0; i < queue->length; i++){

722

if(queue->tasks[i].question_filename != NULL){

723

return true;

724

}

725

}

726

return false;

727

}

728

729

__attribute__((nonnull))

730

void cleanup_close(const int *const fd){

731

const error_t saved_errno = errno;

732

close(*fd);

733

errno = saved_errno;

734

}

735

736

__attribute__((nonnull))

737

void cleanup_string(char *const *const ptr){

738

free(*ptr);

739

}

740

741

__attribute__((nonnull))

742

void cleanup_buffer(buffer *buf){

743

if(buf->allocated > 0){

744

#if defined(__GLIBC_PREREQ) and __GLIBC_PREREQ(2, 25)

745

explicit_bzero(buf->data, buf->allocated);

746

#else

747

memset(buf->data, '\0', buf->allocated);

748

#endif

749

}

750

if(buf->data != NULL){

751

if(munlock(buf->data, buf->allocated) != 0){

752

error(0, errno, "Failed to unlock memory of old buffer");

753

}

754

free(buf->data);

755

buf->data = NULL;

756

}

757

buf->length = 0;

758

buf->allocated = 0;

759

}

760

761

__attribute__((pure, nonnull, warn_unused_result))

762

bool string_set_contains(const string_set set, const char *const str){

763

for(const char *s = set.argz; s != NULL and set.argz_len > 0;

764

s = argz_next(set.argz, set.argz_len, s)){

765

if(strcmp(s, str) == 0){

766

return true;

767

}

768

}

769

return false;

770

}

771

772

__attribute__((nonnull, warn_unused_result))

773

bool string_set_add(string_set *const set, const char *const str){

774

if(string_set_contains(*set, str)){

775

return true;

776

}

777

error_t error = argz_add(&set->argz, &set->argz_len, str);

778

if(error == 0){

779

return true;

780

}

781

errno = error;

782

return false;

783

}

784

785

__attribute__((nonnull))

786

void string_set_clear(string_set *set){

787

free(set->argz);

788

set->argz = NULL;

789

set->argz_len = 0;

790

}

791

792

__attribute__((nonnull))

793

void string_set_swap(string_set *const set1, string_set *const set2){

794

/* Swap contents of two string sets */

795

{

796

char *const tmp_argz = set1->argz;

797

set1->argz = set2->argz;

798

set2->argz = tmp_argz;

799

}

800

{

801

const size_t tmp_argz_len = set1->argz_len;

802

set1->argz_len = set2->argz_len;

803

set2->argz_len = tmp_argz_len;

804

}

805

}

806

807

__attribute__((nonnull, warn_unused_result))

808

bool start_mandos_client(task_queue *const queue,

809

const int epoll_fd,

810

bool *const mandos_client_exited,

811

bool *const quit_now, buffer *const password,

812

bool *const password_is_read,

813

const struct sigaction *const

814

old_sigchld_action, const sigset_t sigmask,

815

const char *const helper_directory,

816

const uid_t user, const gid_t group,

817

const char *const *const argv){

818

int pipefds[2];

819

if(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK) != 0){

820

error(0, errno, "Failed to pipe2(..., O_CLOEXEC | O_NONBLOCK)");

821

return false;

822

}

823

824

const pid_t pid = fork();

825

if(pid == 0){

826

if(not restore_signal_handler(old_sigchld_action)){

827

_exit(EXIT_FAILURE);

828

}

829

if(not restore_sigmask(&sigmask)){

830

_exit(EXIT_FAILURE);

831

}

832

if(close(pipefds[0]) != 0){

833

error(0, errno, "Failed to close() parent pipe fd");

834

_exit(EXIT_FAILURE);

835

}

836

if(dup2(pipefds[1], STDOUT_FILENO) == -1){

837

error(0, errno, "Failed to dup2() pipe fd to stdout");

838

_exit(EXIT_FAILURE);

839

}

840

if(close(pipefds[1]) != 0){

841

error(0, errno, "Failed to close() old child pipe fd");

842

_exit(EXIT_FAILURE);

843

}

844

if(setenv("MANDOSPLUGINHELPERDIR", helper_directory, 1) != 0){

845

error(0, errno, "Failed to setenv(\"MANDOSPLUGINHELPERDIR\","

846

" \"%s\", 1)", helper_directory);

847

_exit(EXIT_FAILURE);

848

}

849

if(group != 0 and setresgid(group, 0, 0) == -1){

850

error(0, errno, "Failed to setresgid(-1, %" PRIuMAX ", %"

851

PRIuMAX")", (uintmax_t)group, (uintmax_t)group);

852

_exit(EXIT_FAILURE);

853

}

854

if(user != 0 and setresuid(user, 0, 0) == -1){

855

error(0, errno, "Failed to setresuid(-1, %" PRIuMAX ", %"

856

PRIuMAX")", (uintmax_t)user, (uintmax_t)user);

857

_exit(EXIT_FAILURE);

858

}

859

#ifdef __GNUC__

860

#pragma GCC diagnostic push

861

/* For historical reasons, the "argv" argument to execv() is not

862

const, but it is safe to override this. */

863

#pragma GCC diagnostic ignored "-Wcast-qual"

864

#endif

865

execv(argv[0], (char **)argv);

866

#ifdef __GNUC__

867

#pragma GCC diagnostic pop

868

#endif

869

error(0, errno, "execv(\"%s\", ...) failed", argv[0]);

870

_exit(EXIT_FAILURE);

871

}

872

close(pipefds[1]);

873

874

if(pid == -1){

875

error(0, errno, "Failed to fork()");

876

close(pipefds[0]);

877

return false;

878

}

879

880

if(not add_to_queue(queue, (task_context){

881

.func=wait_for_mandos_client_exit,

882

.pid=pid,

883

.mandos_client_exited=mandos_client_exited,

884

.quit_now=quit_now,

885

})){

886

error(0, errno, "Failed to add wait_for_mandos_client to queue");

887

close(pipefds[0]);

888

return false;

889

}

890

891

const int ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, pipefds[0],

892

&(struct epoll_event)

893

{ .events=EPOLLIN | EPOLLRDHUP });

894

if(ret != 0 and errno != EEXIST){

895

error(0, errno, "Failed to add file descriptor to epoll set");

896

close(pipefds[0]);

897

return false;

898

}

899

900

return add_to_queue(queue, (task_context){

901

.func=read_mandos_client_output,

902

.epoll_fd=epoll_fd,

903

.fd=pipefds[0],

904

.quit_now=quit_now,

905

.password=password,

906

.password_is_read=password_is_read,

907

});

908

}

909

910

__attribute__((nonnull))

911

void wait_for_mandos_client_exit(const task_context task,

912

task_queue *const queue){

913

const pid_t pid = task.pid;

914

bool *const mandos_client_exited = task.mandos_client_exited;

915

bool *const quit_now = task.quit_now;

916

917

int status;

918

switch(waitpid(pid, &status, WNOHANG)){

919

case 0: /* Not exited yet */

920

if(not add_to_queue(queue, task)){

921

error(0, errno, "Failed to add myself to queue");

922

*quit_now = true;

923

}

924

break;

925

case -1: /* Error */

926

error(0, errno, "waitpid(%" PRIdMAX ") failed", (intmax_t)pid);

927

if(errno != ECHILD){

928

kill(pid, SIGTERM);

929

}

930

*quit_now = true;

931

break;

932

default: /* Has exited */

933

*mandos_client_exited = true;

934

if((not WIFEXITED(status))

935

or (WEXITSTATUS(status) != EXIT_SUCCESS)){

936

error(0, 0, "Mandos client failed or was killed");

937

*quit_now = true;

938

}

939

}

940

}

941

942

__attribute__((nonnull))

943

void read_mandos_client_output(const task_context task,

944

task_queue *const queue){

945

buffer *const password = task.password;

946

bool *const quit_now = task.quit_now;

947

bool *const password_is_read = task.password_is_read;

948

const int fd = task.fd;

949

const int epoll_fd = task.epoll_fd;

950

951

const size_t new_potential_size = (password->length + PIPE_BUF);

952

if(password->allocated < new_potential_size){

953

char *const new_buffer = calloc(new_potential_size, 1);

954

if(new_buffer == NULL){

955

error(0, errno, "Failed to allocate %" PRIuMAX

956

" bytes for password", (uintmax_t)new_potential_size);

957

*quit_now = true;

958

close(fd);

959

return;

960

}

961

if(mlock(new_buffer, new_potential_size) != 0){

962

/* Warn but do not treat as fatal error */

963

if(errno != EPERM and errno != ENOMEM){

964

error(0, errno, "Failed to lock memory for password");

965

}

966

}

967

if(password->length > 0){

968

memcpy(new_buffer, password->data, password->length);

969

#if defined(__GLIBC_PREREQ) and __GLIBC_PREREQ(2, 25)

970

explicit_bzero(password->data, password->allocated);

971

#else

972

memset(password->data, '\0', password->allocated);

973

#endif

974

}

975

if(password->data != NULL){

976

if(munlock(password->data, password->allocated) != 0){

977

error(0, errno, "Failed to unlock memory of old buffer");

978

}

979

free(password->data);

980

}

981

password->data = new_buffer;

982

password->allocated = new_potential_size;

983

}

984

985

const ssize_t read_length = read(fd, password->data

986

+ password->length, PIPE_BUF);

987

988

if(read_length == 0){ /* EOF */

989

*password_is_read = true;

990

close(fd);

991

return;

992

}

993

if(read_length < 0 and errno != EAGAIN){ /* Actual error */

994

error(0, errno, "Failed to read password from Mandos client");

995

*quit_now = true;

996

close(fd);

997

return;

998

}

999

if(read_length > 0){ /* Data has been read */

1000

password->length += (size_t)read_length;

1001

}

1002

1003

/* Either data was read, or EAGAIN was indicated, meaning no data

1004

available yet */

1005

1006

/* Re-add the fd to the epoll set */

1007

const int ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd,

1008

&(struct epoll_event)

1009

{ .events=EPOLLIN | EPOLLRDHUP });

1010

if(ret != 0 and errno != EEXIST){

1011

error(0, errno, "Failed to re-add file descriptor to epoll set");

1012

*quit_now = true;

1013

close(fd);

1014

return;

1015

}

1016

1017

/* Re-add myself to the queue */

1018

if(not add_to_queue(queue, task)){

1019

error(0, errno, "Failed to add myself to queue");

1020

*quit_now = true;

1021

close(fd);

1022

}

1023

}

1024

1025

__attribute__((nonnull, warn_unused_result))

1026

bool add_inotify_dir_watch(task_queue *const queue,

1027

const int epoll_fd, bool *const quit_now,

1028

buffer *const password,

1029

const char *const dir,

1030

string_set *cancelled_filenames,

1031

const mono_microsecs *const current_time,

1032

bool *const mandos_client_exited,

1033

bool *const password_is_read){

1034

const int fd = inotify_init1(IN_NONBLOCK | IN_CLOEXEC);

1035

if(fd == -1){

1036

error(0, errno, "Failed to create inotify instance");

1037

return false;

1038

}

1039

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)

1043

== -1){

1044

error(0, errno, "Failed to create inotify watch on %s", dir);

1045

return false;

1046

}

1047

1048

/* Add the inotify fd to the epoll set */

1049

const int ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd,

1050

&(struct epoll_event)

1051

{ .events=EPOLLIN | EPOLLRDHUP });

1052

if(ret != 0 and errno != EEXIST){

1053

error(0, errno, "Failed to add file descriptor to epoll set");

1054

close(fd);

1055

return false;

1056

}

1057

1058

const task_context read_inotify_event_task = {

1059

.func=read_inotify_event,

1060

.epoll_fd=epoll_fd,

1061

.quit_now=quit_now,

1062

.password=password,

1063

.fd=fd,

1064

.filename=strdup(dir),

1065

.cancelled_filenames=cancelled_filenames,

1066

.current_time=current_time,

1067

.mandos_client_exited=mandos_client_exited,

1068

.password_is_read=password_is_read,

1069

};

1070

if(read_inotify_event_task.filename == NULL){

1071

error(0, errno, "Failed to strdup(\"%s\")", dir);

1072

close(fd);

1073

return false;

1074

}

1075

1076

return add_to_queue(queue, read_inotify_event_task);

1077

}

1078

1079

__attribute__((nonnull))

1080

void read_inotify_event(const task_context task,

1081

task_queue *const queue){

1082

const int fd = task.fd;

1083

const int epoll_fd = task.epoll_fd;

1084

char *const filename = task.filename;

1085

bool *quit_now = task.quit_now;

1086

buffer *const password = task.password;

1087

string_set *const cancelled_filenames = task.cancelled_filenames;

1088

const mono_microsecs *const current_time = task.current_time;

1089

bool *const mandos_client_exited = task.mandos_client_exited;

1090

bool *const password_is_read = task.password_is_read;

1091

1092

/* "sufficient to read at least one event." - inotify(7) */

1093

const size_t ievent_size = (sizeof(struct inotify_event)

1094

+ NAME_MAX + 1);

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;

1100

1101

#if defined(__GNUC__) and __GNUC__ >= 7

1102

#pragma GCC diagnostic push

1103

/* ievent is pointing into a struct which is of sufficient size */

1104

#pragma GCC diagnostic ignored "-Wstringop-overflow"

1105

#endif

1106

const ssize_t read_length = read(fd, ievent, ievent_size);

1107

#if defined(__GNUC__) and __GNUC__ >= 7

1108

#pragma GCC diagnostic pop

1109

#endif

1110

if(read_length == 0){ /* EOF */

1111

error(0, 0, "Got EOF from inotify fd for directory %s", filename);

1112

*quit_now = true;

1113

cleanup_task(&task);

1114

return;

1115

}

1116

if(read_length < 0 and errno != EAGAIN){ /* Actual error */

1117

error(0, errno, "Failed to read from inotify fd for directory %s",

1118

filename);

1119

*quit_now = true;

1120

cleanup_task(&task);

1121

return;

1122

}

1123

if(read_length > 0 /* Data has been read */

1124

and fnmatch("ask.*", ievent->name, FNM_FILE_NAME) == 0){

1125

char *question_filename = NULL;

1126

const ssize_t question_filename_length

1127

= asprintf(&question_filename, "%s/%s", filename, ievent->name);

1128

if(question_filename_length < 0){

1129

error(0, errno, "Failed to create file name from directory name"

1130

" %s and file name %s", filename, ievent->name);

1131

} else {

1132

if(ievent->mask & (IN_CLOSE_WRITE | IN_MOVED_TO)){

1133

if(not add_to_queue(queue, (task_context){

1134

.func=open_and_parse_question,

1135

.epoll_fd=epoll_fd,

1136

.question_filename=question_filename,

1137

.filename=question_filename,

1138

.password=password,

1139

.cancelled_filenames=cancelled_filenames,

1140

.current_time=current_time,

1141

.mandos_client_exited=mandos_client_exited,

1142

.password_is_read=password_is_read,

1143

})){

1144

error(0, errno, "Failed to add open_and_parse_question task"

1145

" for file name %s to queue", filename);

1146

} else {

1147

/* Force the added task (open_and_parse_question) to run

1148

immediately */

1149

queue->next_run = 1;

1150

}

1151

} else if(ievent->mask & (IN_MOVED_FROM | IN_DELETE)){

1152

if(not string_set_add(cancelled_filenames,

1153

question_filename)){

1154

error(0, errno, "Could not add question %s to"

1155

" cancelled_questions", question_filename);

1156

*quit_now = true;

1157

free(question_filename);

1158

cleanup_task(&task);

1159

return;

1160

}

1161

free(question_filename);

1162

}

1163

}

1164

}

1165

1166

/* Either data was read, or EAGAIN was indicated, meaning no data

1167

available yet */

1168

1169

/* Re-add myself to the queue */

1170

if(not add_to_queue(queue, task)){

1171

error(0, errno, "Failed to re-add read_inotify_event(%s) to"

1172

" queue", filename);

1173

*quit_now = true;

1174

cleanup_task(&task);

1175

return;

1176

}

1177

1178

/* Re-add the fd to the epoll set */

1179

const int ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd,

1180

&(struct epoll_event)

1181

{ .events=EPOLLIN | EPOLLRDHUP });

1182

if(ret != 0 and errno != EEXIST){

1183

error(0, errno, "Failed to re-add inotify file descriptor %d for"

1184

" directory %s to epoll set", fd, filename);

1185

/* Force the added task (read_inotify_event) to run again, at most

1186

one second from now */

1187

if((queue->next_run == 0)

1188

or (queue->next_run > (*current_time + 1000000))){

1189

queue->next_run = *current_time + 1000000;

1190

}

1191

}

1192

}

1193

1194

__attribute__((nonnull))

1195

void open_and_parse_question(const task_context task,

1196

task_queue *const queue){

1197

__attribute__((cleanup(cleanup_string)))

1198

char *question_filename = task.question_filename;

1199

const int epoll_fd = task.epoll_fd;

1200

buffer *const password = task.password;

1201

string_set *const cancelled_filenames = task.cancelled_filenames;

1202

const mono_microsecs *const current_time = task.current_time;

1203

bool *const mandos_client_exited = task.mandos_client_exited;

1204

bool *const password_is_read = task.password_is_read;

1205

1206

/* We use the GLib "Key-value file parser" functions to parse the

1207

question file. See <https://systemd.io/PASSWORD_AGENTS/> for

1208

specification of contents */

1209

__attribute__((nonnull))

1210

void cleanup_g_key_file(GKeyFile **key_file){

1211

if(*key_file != NULL){

1212

g_key_file_free(*key_file);

1213

}

1214

}

1215

1216

__attribute__((cleanup(cleanup_g_key_file)))

1217

GKeyFile *key_file = g_key_file_new();

1218

if(key_file == NULL){

1219

error(0, errno, "Failed g_key_file_new() for \"%s\"",

1220

question_filename);

1221

return;

1222

}

1223

GError *glib_error = NULL;

1224

if(g_key_file_load_from_file(key_file, question_filename,

1225

G_KEY_FILE_NONE, &glib_error) != TRUE){

1226

/* If a file was removed, we should ignore it, so */

1227

/* only show error message if file actually existed */

1228

if(glib_error->code != G_FILE_ERROR_NOENT){

1229

error(0, 0, "Failed to load question data from file \"%s\": %s",

1230

question_filename, glib_error->message);

1231

}

1232

return;

1233

}

1234

1235

__attribute__((cleanup(cleanup_string)))

1236

char *socket_name = g_key_file_get_string(key_file, "Ask",

1237

"Socket",

1238

&glib_error);

1239

if(socket_name == NULL){

1240

error(0, 0, "Question file \"%s\" did not contain \"Socket\": %s",

1241

question_filename, glib_error->message);

1242

return;

1243

}

1244

1245

if(strlen(socket_name) == 0){

1246

error(0, 0, "Question file \"%s\" had empty \"Socket\" value",

1247

question_filename);

1248

return;

1249

}

1250

1251

const guint64 pid = g_key_file_get_uint64(key_file, "Ask", "PID",

1252

&glib_error);

1253

if(glib_error != NULL){

1254

error(0, 0, "Question file \"%s\" contained bad \"PID\": %s",

1255

question_filename, glib_error->message);

1256

return;

1257

}

1258

1259

if((pid != (guint64)((pid_t)pid))

1260

or (kill((pid_t)pid, 0) != 0)){

1261

error(0, 0, "PID %" PRIuMAX " in question file \"%s\" is bad or"

1262

" does not exist", (uintmax_t)pid, question_filename);

1263

return;

1264

}

1265

1266

guint64 notafter = g_key_file_get_uint64(key_file, "Ask",

1267

"NotAfter", &glib_error);

1268

if(glib_error != NULL){

1269

if(glib_error->code != G_KEY_FILE_ERROR_KEY_NOT_FOUND){

1270

error(0, 0, "Question file \"%s\" contained bad \"NotAfter\":"

1271

" %s", question_filename, glib_error->message);

1272

}

1273

notafter = 0;

1274

}

1275

if(notafter != 0){

1276

if(queue->next_run == 0 or (queue->next_run > notafter)){

1277

queue->next_run = notafter;

1278

}

1279

if(*current_time >= notafter){

1280

return;

1281

}

1282

}

1283

1284

const task_context connect_question_socket_task = {

1285

.func=connect_question_socket,

1286

.question_filename=strdup(question_filename),

1287

.epoll_fd=epoll_fd,

1288

.password=password,

1289

.filename=strdup(socket_name),

1290

.cancelled_filenames=task.cancelled_filenames,

1291

.mandos_client_exited=mandos_client_exited,

1292

.password_is_read=password_is_read,

1293

.current_time=current_time,

1294

};

1295

if(connect_question_socket_task.question_filename == NULL

1296

or connect_question_socket_task.filename == NULL

1297

or not add_to_queue(queue, connect_question_socket_task)){

1298

error(0, errno, "Failed to add connect_question_socket for socket"

1299

" %s (from \"%s\") to queue", socket_name,

1300

question_filename);

1301

cleanup_task(&connect_question_socket_task);

1302

return;

1303

}

1304

/* Force the added task (connect_question_socket) to run

1305

immediately */

1306

queue->next_run = 1;

1307

1308

if(notafter > 0){

1309

char *const dup_filename = strdup(question_filename);

1310

const task_context cancel_old_question_task = {

1311

.func=cancel_old_question,

1312

.question_filename=dup_filename,

1313

.notafter=notafter,

1314

.filename=dup_filename,

1315

.cancelled_filenames=cancelled_filenames,

1316

.current_time=current_time,

1317

};

1318

if(cancel_old_question_task.question_filename == NULL

1319

or not add_to_queue(queue, cancel_old_question_task)){

1320

error(0, errno, "Failed to add cancel_old_question for file "

1321

"\"%s\" to queue", question_filename);

1322

cleanup_task(&cancel_old_question_task);

1323

return;

1324

}

1325

}

1326

}

1327

1328

__attribute__((nonnull))

1329

void cancel_old_question(const task_context task,

1330

task_queue *const queue){

1331

char *const question_filename = task.question_filename;

1332

string_set *const cancelled_filenames = task.cancelled_filenames;

1333

const mono_microsecs notafter = task.notafter;

1334

const mono_microsecs *const current_time = task.current_time;

1335

1336

if(*current_time >= notafter){

1337

if(not string_set_add(cancelled_filenames, question_filename)){

1338

error(0, errno, "Failed to cancel question for file %s",

1339

question_filename);

1340

}

1341

cleanup_task(&task);

1342

return;

1343

}

1344

1345

if(not add_to_queue(queue, task)){

1346

error(0, errno, "Failed to add cancel_old_question for file "

1347

"%s to queue", question_filename);

1348

cleanup_task(&task);

1349

return;

1350

}

1351

1352

if((queue->next_run == 0) or (queue->next_run > notafter)){

1353

queue->next_run = notafter;

1354

}

1355

}

1356

1357

__attribute__((nonnull))

1358

void connect_question_socket(const task_context task,

1359

task_queue *const queue){

1360

char *const question_filename = task.question_filename;

1361

char *const filename = task.filename;

1362

const int epoll_fd = task.epoll_fd;

1363

buffer *const password = task.password;

1364

string_set *const cancelled_filenames = task.cancelled_filenames;

1365

bool *const mandos_client_exited = task.mandos_client_exited;

1366

bool *const password_is_read = task.password_is_read;

1367

const mono_microsecs *const current_time = task.current_time;

1368

1369

struct sockaddr_un sock_name = { .sun_family=AF_LOCAL };

1370

1371

if(sizeof(sock_name.sun_path) <= strlen(filename)){

1372

error(0, 0, "Socket filename is larger than"

1373

" sizeof(sockaddr_un.sun_path); %" PRIuMAX ": \"%s\"",

1374

(uintmax_t)sizeof(sock_name.sun_path), filename);

1375

if(not string_set_add(cancelled_filenames, question_filename)){

1376

error(0, errno, "Failed to cancel question for file %s",

1377

question_filename);

1378

}

1379

cleanup_task(&task);

1380

return;

1381

}

1382

1383

const int fd = socket(PF_LOCAL, SOCK_DGRAM

1384

| SOCK_NONBLOCK | SOCK_CLOEXEC, 0);

1385

if(fd < 0){

1386

error(0, errno,

1387

"Failed to create socket(PF_LOCAL, SOCK_DGRAM, 0)");

1388

if(not add_to_queue(queue, task)){

1389

error(0, errno, "Failed to add connect_question_socket for file"

1390

" \"%s\" and socket \"%s\" to queue", question_filename,

1391

filename);

1392

cleanup_task(&task);

1393

} else {

1394

/* Force the added task (connect_question_socket) to run

1395

immediately */

1396

queue->next_run = 1;

1397

}

1398

return;

1399

}

1400

1401

strncpy(sock_name.sun_path, filename, sizeof(sock_name.sun_path));

1402

if(connect(fd, (struct sockaddr *)&sock_name,

1403

(socklen_t)SUN_LEN(&sock_name)) != 0){

1404

error(0, errno, "Failed to connect socket to \"%s\"", filename);

1405

if(not add_to_queue(queue, task)){

1406

error(0, errno, "Failed to add connect_question_socket for file"

1407

" \"%s\" and socket \"%s\" to queue", question_filename,

1408

filename);

1409

cleanup_task(&task);

1410

} else {

1411

/* Force the added task (connect_question_socket) to run again,

1412

at most one second from now */

1413

if((queue->next_run == 0)

1414

or (queue->next_run > (*current_time + 1000000))){

1415

queue->next_run = *current_time + 1000000;

1416

}

1417

}

1418

return;

1419

}

1420

1421

/* Not necessary, but we can try, and merely warn on failure */

1422

if(shutdown(fd, SHUT_RD) != 0){

1423

error(0, errno, "Failed to shutdown reading from socket \"%s\"",

1424

filename);

1425

}

1426

1427

/* Add the fd to the epoll set */

1428

if(epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd,

1429

&(struct epoll_event){ .events=EPOLLOUT })

1430

!= 0){

1431

error(0, errno, "Failed to add inotify file descriptor %d for"

1432

" socket %s to epoll set", fd, filename);

1433

if(not add_to_queue(queue, task)){

1434

error(0, errno, "Failed to add connect_question_socket for file"

1435

" \"%s\" and socket \"%s\" to queue", question_filename,

1436

filename);

1437

cleanup_task(&task);

1438

} else {

1439

/* Force the added task (connect_question_socket) to run again,

1440

at most one second from now */

1441

if((queue->next_run == 0)

1442

or (queue->next_run > (*current_time + 1000000))){

1443

queue->next_run = *current_time + 1000000;

1444

}

1445

}

1446

return;

1447

}

1448

1449

/* add task send_password_to_socket to queue */

1450

const task_context send_password_to_socket_task = {

1451

.func=send_password_to_socket,

1452

.question_filename=question_filename,

1453

.filename=filename,

1454

.epoll_fd=epoll_fd,

1455

.fd=fd,

1456

.password=password,

1457

.cancelled_filenames=cancelled_filenames,

1458

.mandos_client_exited=mandos_client_exited,

1459

.password_is_read=password_is_read,

1460

.current_time=current_time,

1461

};

1462

1463

if(not add_to_queue(queue, send_password_to_socket_task)){

1464

error(0, errno, "Failed to add send_password_to_socket for"

1465

" file \"%s\" and socket \"%s\" to queue",

1466

question_filename, filename);

1467

cleanup_task(&send_password_to_socket_task);

1468

}

1469

}

1470

1471

__attribute__((nonnull))

1472

void send_password_to_socket(const task_context task,

1473

task_queue *const queue){

1474

char *const question_filename=task.question_filename;

1475

char *const filename=task.filename;

1476

const int epoll_fd=task.epoll_fd;

1477

const int fd=task.fd;

1478

buffer *const password=task.password;

1479

string_set *const cancelled_filenames=task.cancelled_filenames;

1480

bool *const mandos_client_exited = task.mandos_client_exited;

1481

bool *const password_is_read = task.password_is_read;

1482

const mono_microsecs *const current_time = task.current_time;

1483

1484

if(*mandos_client_exited and *password_is_read){

1485

1486

const size_t send_buffer_length = password->length + 2;

1487

char *send_buffer = malloc(send_buffer_length);

1488

if(send_buffer == NULL){

1489

error(0, errno, "Failed to allocate send_buffer");

1490

} else {

1491

if(mlock(send_buffer, send_buffer_length) != 0){

1492

/* Warn but do not treat as fatal error */

1493

if(errno != EPERM and errno != ENOMEM){

1494

error(0, errno, "Failed to lock memory for password"

1495

" buffer");

1496

}

1497

}

1498

/* “[…] send a single datagram to the socket consisting of the

1499

password string either prefixed with "+" or with "-"

1500

depending on whether the password entry was successful or

1501

not. You may but don't have to include a final NUL byte in

1502

your message.

1503

1504

— <https://systemd.io/PASSWORD_AGENTS/> (Tue, 15 Sep 2020

1505

14:24:20 GMT)

1506

*/

1507

send_buffer[0] = '+'; /* Prefix with "+" */

1508

/* Always add an extra NUL */

1509

send_buffer[password->length + 1] = '\0';

1510

if(password->length > 0){

1511

memcpy(send_buffer + 1, password->data, password->length);

1512

}

1513

errno = 0;

1514

ssize_t ssret = send(fd, send_buffer, send_buffer_length,

1515

MSG_NOSIGNAL);

1516

const error_t saved_errno = (ssret < 0) ? errno : 0;

1517

#if defined(__GLIBC_PREREQ) and __GLIBC_PREREQ(2, 25)

1518

explicit_bzero(send_buffer, send_buffer_length);

1519

#else

1520

memset(send_buffer, '\0', send_buffer_length);

1521

#endif

1522

if(munlock(send_buffer, send_buffer_length) != 0){

1523

error(0, errno, "Failed to unlock memory of send buffer");

1524

}

1525

free(send_buffer);

1526

if(ssret < 0 or ssret < (ssize_t)send_buffer_length){

1527

switch(saved_errno){

1528

case EINTR:

1529

case ENOBUFS:

1530

case ENOMEM:

1531

case EADDRINUSE:

1532

case ECONNREFUSED:

1533

case ECONNRESET:

1534

case ENOENT:

1535

case ETOOMANYREFS:

1536

case EAGAIN:

1537

/* Retry, below */

1538

break;

1539

case EMSGSIZE:

1540

error(0, saved_errno, "Password of size %" PRIuMAX

1541

" is too big", (uintmax_t)password->length);

1542

#if __GNUC__ < 7

1543

/* FALLTHROUGH */

1544

#else

1545

__attribute__((fallthrough));

1546

#endif

1547

case 0:

1548

if(ssret >= 0 and ssret < (ssize_t)send_buffer_length){

1549

error(0, 0, "Password only partially sent to socket %s: %"

1550

PRIuMAX " out of %" PRIuMAX " bytes sent", filename,

1551

(uintmax_t)ssret, (uintmax_t)send_buffer_length);

1552

}

1553

#if __GNUC__ < 7

1554

/* FALLTHROUGH */

1555

#else

1556

__attribute__((fallthrough));

1557

#endif

1558

default:

1559

error(0, saved_errno, "Failed to send() to socket %s",

1560

filename);

1561

if(not string_set_add(cancelled_filenames,

1562

question_filename)){

1563

error(0, errno, "Failed to cancel question for file %s",

1564

question_filename);

1565

}

1566

cleanup_task(&task);

1567

return;

1568

}

1569

} else {

1570

/* Success */

1571

cleanup_task(&task);

1572

return;

1573

}

1574

}

1575

}

1576

1577

/* We failed or are not ready yet; retry later */

1578

1579

if(not add_to_queue(queue, task)){

1580

error(0, errno, "Failed to add send_password_to_socket for"

1581

" file %s and socket %s to queue", question_filename,

1582

filename);

1583

cleanup_task(&task);

1584

}

1585

1586

/* Add the fd to the epoll set */

1587

if(epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd,

1588

&(struct epoll_event){ .events=EPOLLOUT })

1589

!= 0){

1590

error(0, errno, "Failed to add socket file descriptor %d for"

1591

" socket %s to epoll set", fd, filename);

1592

/* Force the added task (send_password_to_socket) to run again, at

1593

most one second from now */

1594

if((queue->next_run == 0)

1595

or (queue->next_run > (*current_time + 1000000))){

1596

queue->next_run = *current_time + 1000000;

1597

}

1598

}

1599

}

1600

1601

__attribute__((warn_unused_result))

1602

bool add_existing_questions(task_queue *const queue,

1603

const int epoll_fd,

1604

buffer *const password,

1605

string_set *cancelled_filenames,

1606

const mono_microsecs *const current_time,

1607

bool *const mandos_client_exited,

1608

bool *const password_is_read,

1609

const char *const dirname){

1610

__attribute__((cleanup(cleanup_string)))

1611

char *dir_pattern = NULL;

1612

const int ret = asprintf(&dir_pattern, "%s/ask.*", dirname);

1613

if(ret < 0 or dir_pattern == NULL){

1614

error(0, errno, "Could not create glob pattern for directory %s",

1615

dirname);

1616

return false;

1617

}

1618

__attribute__((cleanup(globfree)))

1619

glob_t question_filenames = {};

1620

switch(glob(dir_pattern, GLOB_ERR | GLOB_NOSORT | GLOB_MARK,

1621

NULL, &question_filenames)){

1622

case GLOB_ABORTED:

1623

default:

1624

error(0, errno, "Failed to open directory %s", dirname);

1625

return false;

1626

case GLOB_NOMATCH:

1627

error(0, errno, "There are no question files in %s", dirname);

1628

return false;

1629

case GLOB_NOSPACE:

1630

error(0, errno, "Could not allocate memory for question file"

1631

" names in %s", dirname);

1632

#if __GNUC__ < 7

1633

/* FALLTHROUGH */

1634

#else

1635

__attribute__((fallthrough));

1636

#endif

1637

case 0:

1638

for(size_t i = 0; i < question_filenames.gl_pathc; i++){

1639

char *const question_filename = strdup(question_filenames

1640

.gl_pathv[i]);

1641

const task_context task = {

1642

.func=open_and_parse_question,

1643

.epoll_fd=epoll_fd,

1644

.question_filename=question_filename,

1645

.filename=question_filename,

1646

.password=password,

1647

.cancelled_filenames=cancelled_filenames,

1648

.current_time=current_time,

1649

.mandos_client_exited=mandos_client_exited,

1650

.password_is_read=password_is_read,

1651

};

1652

1653

if(question_filename == NULL

1654

or not add_to_queue(queue, task)){

1655

error(0, errno, "Failed to add open_and_parse_question for"

1656

" file %s to queue",

1657

question_filenames.gl_pathv[i]);

1658

free(question_filename);

1659

} else {

1660

queue->next_run = 1;

1661

}

1662

}

1663

return true;

1664

}

1665

}

1666

1667

__attribute__((nonnull, warn_unused_result))

1668

bool wait_for_event(const int epoll_fd,

1669

const mono_microsecs queue_next_run,

1670

const mono_microsecs current_time){

1671

__attribute__((const))

1672

int milliseconds_to_wait(const mono_microsecs currtime,

1673

const mono_microsecs nextrun){

1674

if(currtime >= nextrun){

1675

return 0;

1676

}

1677

const uintmax_t wait_time_ms = (nextrun - currtime) / 1000;

1678

if(wait_time_ms > (uintmax_t)INT_MAX){

1679

return INT_MAX;

1680

}

1681

return (int)wait_time_ms;

1682

}

1683

1684

const int wait_time_ms = milliseconds_to_wait(current_time,

1685

queue_next_run);

1686

1687

/* Prepare unblocking of SIGCHLD during epoll_pwait */

1688

sigset_t temporary_unblocked_sigmask;

1689

/* Get current signal mask */

1690

if(pthread_sigmask(-1, NULL, &temporary_unblocked_sigmask) != 0){

1691

return false;

1692

}

1693

/* Remove SIGCHLD from the signal mask */

1694

if(sigdelset(&temporary_unblocked_sigmask, SIGCHLD) != 0){

1695

return false;

1696

}

1697

struct epoll_event events[8]; /* Ignored */

1698

int ret = epoll_pwait(epoll_fd, events,

1699

sizeof(events) / sizeof(struct epoll_event),

1700

queue_next_run == 0 ? -1 : (int)wait_time_ms,

1701

&temporary_unblocked_sigmask);

1702

if(ret < 0 and errno != EINTR){

1703

error(0, errno, "Failed epoll_pwait(epfd=%d, ..., timeout=%d,"

1704

" ...", epoll_fd,

1705

queue_next_run == 0 ? -1 : (int)wait_time_ms);

1706

return false;

1707

}

1708

return clear_all_fds_from_epoll_set(epoll_fd);

1709

}

1710

1711

bool clear_all_fds_from_epoll_set(const int epoll_fd){

1712

/* Create a new empty epoll set */

1713

__attribute__((cleanup(cleanup_close)))

1714

const int new_epoll_fd = epoll_create1(EPOLL_CLOEXEC);

1715

if(new_epoll_fd < 0){

1716

return false;

1717

}

1718

/* dup3() the new epoll set fd over the old one, replacing it */

1719

if(dup3(new_epoll_fd, epoll_fd, O_CLOEXEC) < 0){

1720

return false;

1721

}

1722

return true;

1723

}

1724

1725

__attribute__((nonnull, warn_unused_result))

1726

bool run_queue(task_queue **const queue,

1727

string_set *const cancelled_filenames,

1728

bool *const quit_now){

1729

1730

task_queue *new_queue = create_queue();

1731

if(new_queue == NULL){

1732

return false;

1733

}

1734

1735

__attribute__((cleanup(string_set_clear)))

1736

string_set old_cancelled_filenames = {};

1737

string_set_swap(cancelled_filenames, &old_cancelled_filenames);

1738

1739

/* Declare i outside the for loop, since we might need i after the

1740

loop in case we aborted in the middle */

1741

size_t i;

1742

for(i=0; i < (*queue)->length and not *quit_now; i++){

1743

task_context *const task = &((*queue)->tasks[i]);

1744

const char *const question_filename = task->question_filename;

1745

/* Skip any task referencing a cancelled question filename */

1746

if(question_filename != NULL

1747

and string_set_contains(old_cancelled_filenames,

1748

question_filename)){

1749

cleanup_task(task);

1750

continue;

1751

}

1752

task->func(*task, new_queue);

1753

}

1754

1755

if(*quit_now){

1756

/* we might be in the middle of the queue, so clean up any

1757

remaining tasks in the current queue */

1758

for(; i < (*queue)->length; i++){

1759

cleanup_task(&((*queue)->tasks[i]));

1760

}

1761

free_queue(*queue);

1762

*queue = new_queue;

1763

new_queue = NULL;

1764

return false;

1765

}

1766

free_queue(*queue);

1767

*queue = new_queue;

1768

new_queue = NULL;

1769

1770

return true;

1771

}

1772

1773

/* End of regular code section */

1774

1775

/* Start of tests section; here are the tests for the above code */

1776

1777

/* This "fixture" data structure is used by the test setup and

1778

teardown functions */

1779

typedef struct {

1780

struct sigaction orig_sigaction;

1781

sigset_t orig_sigmask;

1782

} test_fixture;

1783

1784

static void test_setup(test_fixture *fixture,

1785

__attribute__((unused))

1786

gconstpointer user_data){

1787

g_assert_true(setup_signal_handler(&fixture->orig_sigaction));

1788

g_assert_true(block_sigchld(&fixture->orig_sigmask));

1789

}

1790

1791

static void test_teardown(test_fixture *fixture,

1792

__attribute__((unused))

1793

gconstpointer user_data){

1794

g_assert_true(restore_signal_handler(&fixture->orig_sigaction));

1795

g_assert_true(restore_sigmask(&fixture->orig_sigmask));

1796

}

1797

1798

/* Utility function used by tests to search queue for matching task */

1799

__attribute__((pure, nonnull, warn_unused_result))

1800

static task_context *find_matching_task(const task_queue *const queue,

1801

const task_context task){

1802

/* The argument "task" structure is a pattern to match; 0 in any

1803

member means any value matches, otherwise the value must match.

1804

The filename strings are compared by strcmp(), not by pointer. */

1805

for(size_t i = 0; i < queue->length; i++){

1806

task_context *const current_task = queue->tasks+i;

1807

/* Check all members of task_context, if set to a non-zero value.

1808

If a member does not match, continue to next task in queue */

1809

1810

/* task_func *const func */

1811

if(task.func != NULL and current_task->func != task.func){

1812

continue;

1813

}

1814

/* char *const question_filename; */

1815

if(task.question_filename != NULL

1816

and (current_task->question_filename == NULL

1817

or strcmp(current_task->question_filename,

1818

task.question_filename) != 0)){

1819

continue;

1820

}

1821

/* const pid_t pid; */

1822

if(task.pid != 0 and current_task->pid != task.pid){

1823

continue;

1824

}

1825

/* const int epoll_fd; */

1826

if(task.epoll_fd != 0

1827

and current_task->epoll_fd != task.epoll_fd){

1828

continue;

1829

}

1830

/* bool *const quit_now; */

1831

if(task.quit_now != NULL

1832

and current_task->quit_now != task.quit_now){

1833

continue;

1834

}

1835

/* const int fd; */

1836

if(task.fd != 0 and current_task->fd != task.fd){

1837

continue;

1838

}

1839

/* bool *const mandos_client_exited; */

1840

if(task.mandos_client_exited != NULL

1841

and current_task->mandos_client_exited

1842

!= task.mandos_client_exited){

1843

continue;

1844

}

1845

/* buffer *const password; */

1846

if(task.password != NULL

1847

and current_task->password != task.password){

1848

continue;

1849

}

1850

/* bool *const password_is_read; */

1851

if(task.password_is_read != NULL

1852

and current_task->password_is_read != task.password_is_read){

1853

continue;

1854

}

1855

/* char *filename; */

1856

if(task.filename != NULL

1857

and (current_task->filename == NULL

1858

or strcmp(current_task->filename, task.filename) != 0)){

1859

continue;

1860

}

1861

/* string_set *const cancelled_filenames; */

1862

if(task.cancelled_filenames != NULL

1863

and current_task->cancelled_filenames

1864

!= task.cancelled_filenames){

1865

continue;

1866

}

1867

/* const mono_microsecs notafter; */

1868

if(task.notafter != 0

1869

and current_task->notafter != task.notafter){

1870

continue;

1871

}

1872

/* const mono_microsecs *const current_time; */

1873

if(task.current_time != NULL

1874

and current_task->current_time != task.current_time){

1875

continue;

1876

}

1877

/* Current task matches all members; return it */

1878

return current_task;

1879

}

1880

/* No task in queue matches passed pattern task */

1881

return NULL;

1882

}

1883

1884

static void test_create_queue(__attribute__((unused))

1885

test_fixture *fixture,

1886

__attribute__((unused))

1887

gconstpointer user_data){

1888

__attribute__((cleanup(cleanup_queue)))

1889

task_queue *const queue = create_queue();

1890

g_assert_nonnull(queue);

1891

g_assert_null(queue->tasks);

1892

g_assert_true(queue->length == 0);

1893

g_assert_true(queue->next_run == 0);

1894

}

1895

1896

static task_func dummy_func;

1897

1898

static void test_add_to_queue(__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

1906

g_assert_true(add_to_queue(queue,

1907

(task_context){ .func=dummy_func }));

1908

g_assert_true(queue->length == 1);

1909

g_assert_nonnull(queue->tasks);

1910

g_assert_true(queue->tasks[0].func == dummy_func);

1911

}

1912

1913

static void test_add_to_queue_overflow(__attribute__((unused))

1914

test_fixture *fixture,

1915

__attribute__((unused))

1916

gconstpointer user_data){

1917

__attribute__((cleanup(cleanup_queue)))

1918

task_queue *queue = create_queue();

1919

g_assert_nonnull(queue);

1920

g_assert_true(queue->length == 0);

1921

queue->length = SIZE_MAX / sizeof(task_context); /* fake max size */

1922

1923

FILE *real_stderr = stderr;

1924

FILE *devnull = fopen("/dev/null", "we");

1925

g_assert_nonnull(devnull);

1926

stderr = devnull;

1927

const bool ret = add_to_queue(queue,

1928

(task_context){ .func=dummy_func });

1929

g_assert_true(errno == ENOMEM);

1930

g_assert_false(ret);

1931

stderr = real_stderr;

1932

g_assert_cmpint(fclose(devnull), ==, 0);

1933

queue->length = 0; /* Restore real size */

1934

}

1935

1936

static void dummy_func(__attribute__((unused))

1937

const task_context task,

1938

__attribute__((unused))

1939

task_queue *const queue){

1940

}

1941

1942

static void test_queue_has_question_empty(__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

g_assert_false(queue_has_question(queue));

1950

}

1951

1952

static void test_queue_has_question_false(__attribute__((unused))

1953

test_fixture *fixture,

1954

__attribute__((unused))

1955

gconstpointer user_data){

1956

__attribute__((cleanup(cleanup_queue)))

1957

task_queue *queue = create_queue();

1958

g_assert_nonnull(queue);

1959

g_assert_true(add_to_queue(queue,

1960

(task_context){ .func=dummy_func }));

1961

g_assert_false(queue_has_question(queue));

1962

}

1963

1964

static void test_queue_has_question_true(__attribute__((unused))

1965

test_fixture *fixture,

1966

__attribute__((unused))

1967

gconstpointer user_data){

1968

__attribute__((cleanup(cleanup_queue)))

1969

task_queue *queue = create_queue();

1970

g_assert_nonnull(queue);

1971

char *const question_filename

1972

= strdup("/nonexistent/question_filename");

1973

g_assert_nonnull(question_filename);

1974

task_context task = {

1975

.func=dummy_func,

1976

.question_filename=question_filename,

1977

};

1978

g_assert_true(add_to_queue(queue, task));

1979

g_assert_true(queue_has_question(queue));

1980

}

1981

1982

static void test_queue_has_question_false2(__attribute__((unused))

1983

test_fixture *fixture,

1984

__attribute__((unused))

1985

gconstpointer user_data){

1986

__attribute__((cleanup(cleanup_queue)))

1987

task_queue *queue = create_queue();

1988

g_assert_nonnull(queue);

1989

task_context task = { .func=dummy_func };

1990

g_assert_true(add_to_queue(queue, task));

1991

g_assert_true(add_to_queue(queue, task));

1992

g_assert_cmpint((int)queue->length, ==, 2);

1993

g_assert_false(queue_has_question(queue));

1994

}

1995

1996

static void test_queue_has_question_true2(__attribute__((unused))

1997

test_fixture *fixture,

1998

__attribute__((unused))

1999

gconstpointer user_data){

2000

__attribute__((cleanup(cleanup_queue)))

2001

task_queue *queue = create_queue();

2002

g_assert_nonnull(queue);

2003

task_context task1 = { .func=dummy_func };

2004

g_assert_true(add_to_queue(queue, task1));

2005

char *const question_filename

2006

= strdup("/nonexistent/question_filename");

2007

g_assert_nonnull(question_filename);

2008

task_context task2 = {

2009

.func=dummy_func,

2010

.question_filename=question_filename,

2011

};

2012

g_assert_true(add_to_queue(queue, task2));

2013

g_assert_cmpint((int)queue->length, ==, 2);

2014

g_assert_true(queue_has_question(queue));

2015

}

2016

2017

static void test_cleanup_buffer(__attribute__((unused))

2018

test_fixture *fixture,

2019

__attribute__((unused))

2020

gconstpointer user_data){

2021

buffer buf = {};

2022

2023

const size_t buffersize = 10;

2024

2025

buf.data = malloc(buffersize);

2026

g_assert_nonnull(buf.data);

2027

if(mlock(buf.data, buffersize) != 0){

2028

g_assert_true(errno == EPERM or errno == ENOMEM);

2029

}

2030

2031

cleanup_buffer(&buf);

2032

g_assert_null(buf.data);

2033

}

2034

2035

static

2036

void test_string_set_new_set_contains_nothing(__attribute__((unused))

2037

test_fixture *fixture,

2038

__attribute__((unused))

2039

gconstpointer

2040

user_data){

2041

__attribute__((cleanup(string_set_clear)))

2042

string_set set = {};

2043

g_assert_false(string_set_contains(set, "")); /* Empty string */

2044

g_assert_false(string_set_contains(set, "test_string"));

2045

}

2046

2047

static void

2048

test_string_set_with_added_string_contains_it(__attribute__((unused))

2049

test_fixture *fixture,

2050

__attribute__((unused))

2051

gconstpointer

2052

user_data){

2053

__attribute__((cleanup(string_set_clear)))

2054

string_set set = {};

2055

g_assert_true(string_set_add(&set, "test_string"));

2056

g_assert_true(string_set_contains(set, "test_string"));

2057

}

2058

2059

static void

2060

test_string_set_cleared_does_not_contain_str(__attribute__((unused))

2061

test_fixture *fixture,

2062

__attribute__((unused))

2063

gconstpointer user_data){

2064

__attribute__((cleanup(string_set_clear)))

2065

string_set set = {};

2066

g_assert_true(string_set_add(&set, "test_string"));

2067

string_set_clear(&set);

2068

g_assert_false(string_set_contains(set, "test_string"));

2069

}

2070

2071

static

2072

void test_string_set_swap_one_with_empty(__attribute__((unused))

2073

test_fixture *fixture,

2074

__attribute__((unused))

2075

gconstpointer user_data){

2076

__attribute__((cleanup(string_set_clear)))

2077

string_set set1 = {};

2078

__attribute__((cleanup(string_set_clear)))

2079

string_set set2 = {};

2080

g_assert_true(string_set_add(&set1, "test_string1"));

2081

string_set_swap(&set1, &set2);

2082

g_assert_false(string_set_contains(set1, "test_string1"));

2083

g_assert_true(string_set_contains(set2, "test_string1"));

2084

}

2085

2086

static

2087

void test_string_set_swap_empty_with_one(__attribute__((unused))

2088

test_fixture *fixture,

2089

__attribute__((unused))

2090

gconstpointer user_data){

2091

__attribute__((cleanup(string_set_clear)))

2092

string_set set1 = {};

2093

__attribute__((cleanup(string_set_clear)))

2094

string_set set2 = {};

2095

g_assert_true(string_set_add(&set2, "test_string2"));

2096

string_set_swap(&set1, &set2);

2097

g_assert_true(string_set_contains(set1, "test_string2"));

2098

g_assert_false(string_set_contains(set2, "test_string2"));

2099

}

2100

2101

static void test_string_set_swap_one_with_one(__attribute__((unused))

2102

test_fixture *fixture,

2103

__attribute__((unused))

2104

gconstpointer

2105

user_data){

2106

__attribute__((cleanup(string_set_clear)))

2107

string_set set1 = {};

2108

__attribute__((cleanup(string_set_clear)))

2109

string_set set2 = {};

2110

g_assert_true(string_set_add(&set1, "test_string1"));

2111

g_assert_true(string_set_add(&set2, "test_string2"));

2112

string_set_swap(&set1, &set2);

2113

g_assert_false(string_set_contains(set1, "test_string1"));

2114

g_assert_true(string_set_contains(set1, "test_string2"));

2115

g_assert_false(string_set_contains(set2, "test_string2"));

2116

g_assert_true(string_set_contains(set2, "test_string1"));

2117

}

2118

2119

static bool fd_has_cloexec_and_nonblock(const int);

2120

2121

static bool epoll_set_contains(int, int, uint32_t);

2122

2123

static void test_start_mandos_client(test_fixture *fixture,

2124

__attribute__((unused))

2125

gconstpointer user_data){

2126

2127

bool mandos_client_exited = false;

2128

bool quit_now = false;

2129

__attribute__((cleanup(cleanup_close)))

2130

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

2131

g_assert_cmpint(epoll_fd, >=, 0);

2132

__attribute__((cleanup(cleanup_queue)))

2133

task_queue *queue = create_queue();

2134

g_assert_nonnull(queue);

2135

buffer password = {};

2136

bool password_is_read = false;

2137

const char helper_directory[] = "/nonexistent";

2138

const char *const argv[] = { "/bin/true", NULL };

2139

2140

g_assert_true(start_mandos_client(queue, epoll_fd,

2141

&mandos_client_exited, &quit_now,

2142

&password, &password_is_read,

2143

&fixture->orig_sigaction,

2144

fixture->orig_sigmask,

2145

helper_directory, 0, 0, argv));

2146

2147

g_assert_cmpuint((unsigned int)queue->length, >=, 2);

2148

2149

const task_context *const added_wait_task

2150

= find_matching_task(queue, (task_context){

2151

.func=wait_for_mandos_client_exit,

2152

.mandos_client_exited=&mandos_client_exited,

2153

.quit_now=&quit_now,

2154

});

2155

g_assert_nonnull(added_wait_task);

2156

g_assert_cmpint(added_wait_task->pid, >, 0);

2157

g_assert_cmpint(kill(added_wait_task->pid, SIGKILL), ==, 0);

2158

waitpid(added_wait_task->pid, NULL, 0);

2159

2160

const task_context *const added_read_task

2161

= find_matching_task(queue, (task_context){

2162

.func=read_mandos_client_output,

2163

.epoll_fd=epoll_fd,

2164

.password=&password,

2165

.password_is_read=&password_is_read,

2166

.quit_now=&quit_now,

2167

});

2168

g_assert_nonnull(added_read_task);

2169

g_assert_cmpint(added_read_task->fd, >, 2);

2170

g_assert_true(fd_has_cloexec_and_nonblock(added_read_task->fd));

2171

g_assert_true(epoll_set_contains(epoll_fd, added_read_task->fd,

2172

EPOLLIN | EPOLLRDHUP));

2173

}

2174

2175

static bool fd_has_cloexec_and_nonblock(const int fd){

2176

const int socket_fd_flags = fcntl(fd, F_GETFD, 0);

2177

const int socket_file_flags = fcntl(fd, F_GETFL, 0);

2178

return ((socket_fd_flags >= 0)

2179

and (socket_fd_flags & FD_CLOEXEC)

2180

and (socket_file_flags >= 0)

2181

and (socket_file_flags & O_NONBLOCK));

2182

}

2183

2184

__attribute__((const))

2185

bool is_privileged(void){

2186

uid_t user = getuid() + 1;

2187

if(user == 0){ /* Overflow check */

2188

user++;

2189

}

2190

gid_t group = getuid() + 1;

2191

if(group == 0){ /* Overflow check */

2192

group++;

2193

}

2194

const pid_t pid = fork();

2195

if(pid == 0){ /* Child */

2196

if(setresgid((uid_t)-1, group, group) == -1){

2197

if(errno != EPERM){

2198

error(EXIT_FAILURE, errno, "Failed to setresgid(-1, %" PRIuMAX

2199

", %" PRIuMAX")", (uintmax_t)group, (uintmax_t)group);

2200

}

2201

exit(EXIT_FAILURE);

2202

}

2203

if(setresuid((uid_t)-1, user, user) == -1){

2204

if(errno != EPERM){

2205

error(EXIT_FAILURE, errno, "Failed to setresuid(-1, %" PRIuMAX

2206

", %" PRIuMAX")", (uintmax_t)user, (uintmax_t)user);

2207

}

2208

exit(EXIT_FAILURE);

2209

}

2210

exit(EXIT_SUCCESS);

2211

}

2212

if(pid == -1){

2213

error(EXIT_FAILURE, errno, "Failed to fork()");

2214

}

2215

2216

int status;

2217

waitpid(pid, &status, 0);

2218

if(WIFEXITED(status) and (WEXITSTATUS(status) == EXIT_SUCCESS)){

2219

return true;

2220

}

2221

return false;

2222

}

2223

2224

static bool epoll_set_contains(int epoll_fd, int fd, uint32_t events){

2225

/* Only scan for events in this eventmask */

2226

const uint32_t eventmask = EPOLLIN | EPOLLOUT | EPOLLRDHUP;

2227

__attribute__((cleanup(cleanup_string)))

2228

char *fdinfo_name = NULL;

2229

int ret = asprintf(&fdinfo_name, "/proc/self/fdinfo/%d", epoll_fd);

2230

g_assert_cmpint(ret, >, 0);

2231

g_assert_nonnull(fdinfo_name);

2232

2233

FILE *fdinfo = fopen(fdinfo_name, "r");

2234

g_assert_nonnull(fdinfo);

2235

uint32_t reported_events;

2236

buffer line = {};

2237

int found_fd = -1;

2238

2239

do {

2240

if(getline(&line.data, &line.allocated, fdinfo) < 0){

2241

break;

2242

}

2243

/* See proc(5) for format of /proc/PID/fdinfo/FD for epoll fd's */

2244

if(sscanf(line.data, "tfd: %d events: %" SCNx32 " ",

2245

&found_fd, &reported_events) == 2){

2246

if(found_fd == fd){

2247

break;

2248

}

2249

}

2250

} while(not feof(fdinfo) and not ferror(fdinfo));

2251

g_assert_cmpint(fclose(fdinfo), ==, 0);

2252

free(line.data);

2253

if(found_fd != fd){

2254

return false;

2255

}

2256

2257

if(events == 0){

2258

/* Don't check events if none are given */

2259

return true;

2260

}

2261

return (reported_events & eventmask) == (events & eventmask);

2262

}

2263

2264

static void test_start_mandos_client_execv(test_fixture *fixture,

2265

__attribute__((unused))

2266

gconstpointer user_data){

2267

bool mandos_client_exited = false;

2268

bool quit_now = false;

2269

__attribute__((cleanup(cleanup_close)))

2270

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

2271

g_assert_cmpint(epoll_fd, >=, 0);

2272

__attribute__((cleanup(cleanup_queue)))

2273

task_queue *queue = create_queue();

2274

g_assert_nonnull(queue);

2275

__attribute__((cleanup(cleanup_buffer)))

2276

buffer password = {};

2277

const char helper_directory[] = "/nonexistent";

2278

/* Can't execv("/", ...), so this should fail */

2279

const char *const argv[] = { "/", NULL };

2280

2281

{

2282

__attribute__((cleanup(cleanup_close)))

2283

const int devnull_fd = open("/dev/null",

2284

O_WRONLY | O_CLOEXEC | O_NOCTTY);

2285

g_assert_cmpint(devnull_fd, >=, 0);

2286

__attribute__((cleanup(cleanup_close)))

2287

const int real_stderr_fd = dup(STDERR_FILENO);

2288

g_assert_cmpint(real_stderr_fd, >=, 0);

2289

dup2(devnull_fd, STDERR_FILENO);

2290

2291

const bool success = start_mandos_client(queue, epoll_fd,

2292

&mandos_client_exited,

2293

&quit_now,

2294

&password,

2295

(bool[]){false},

2296

&fixture->orig_sigaction,

2297

fixture->orig_sigmask,

2298

helper_directory, 0, 0,

2299

argv);

2300

dup2(real_stderr_fd, STDERR_FILENO);

2301

g_assert_true(success);

2302

}

2303

g_assert_cmpuint((unsigned int)queue->length, ==, 2);

2304

2305

struct timespec starttime, currtime;

2306

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);

2307

do {

2308

queue->next_run = 0;

2309

string_set cancelled_filenames = {};

2310

2311

{

2312

__attribute__((cleanup(cleanup_close)))

2313

const int devnull_fd = open("/dev/null",

2314

O_WRONLY | O_CLOEXEC | O_NOCTTY);

2315

g_assert_cmpint(devnull_fd, >=, 0);

2316

__attribute__((cleanup(cleanup_close)))

2317

const int real_stderr_fd = dup(STDERR_FILENO);

2318

g_assert_cmpint(real_stderr_fd, >=, 0);

2319

g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));

2320

dup2(devnull_fd, STDERR_FILENO);

2321

const bool success = run_queue(&queue, &cancelled_filenames,

2322

&quit_now);

2323

dup2(real_stderr_fd, STDERR_FILENO);

2324

if(not success){

2325

break;

2326

}

2327

}

2328

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);

2329

} while(((queue->length) > 0)

2330

and (not quit_now)

2331

and ((currtime.tv_sec - starttime.tv_sec) < 10));

2332

2333

g_assert_true(quit_now);

2334

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

2335

g_assert_true(mandos_client_exited);

2336

}

2337

2338

static void test_start_mandos_client_suid_euid(test_fixture *fixture,

2339

__attribute__((unused))

2340

gconstpointer

2341

user_data){

2342

if(not is_privileged()){

2343

g_test_skip("Not privileged");

2344

return;

2345

}

2346

2347

bool mandos_client_exited = false;

2348

bool quit_now = false;

2349

__attribute__((cleanup(cleanup_close)))

2350

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

2351

g_assert_cmpint(epoll_fd, >=, 0);

2352

__attribute__((cleanup(cleanup_queue)))

2353

task_queue *queue = create_queue();

2354

g_assert_nonnull(queue);

2355

__attribute__((cleanup(cleanup_buffer)))

2356

buffer password = {};

2357

bool password_is_read = false;

2358

const char helper_directory[] = "/nonexistent";

2359

const char *const argv[] = { "/usr/bin/id", "--user", NULL };

2360

uid_t user = 1000;

2361

gid_t group = 1001;

2362

2363

const bool success = start_mandos_client(queue, epoll_fd,

2364

&mandos_client_exited,

2365

&quit_now, &password,

2366

&password_is_read,

2367

&fixture->orig_sigaction,

2368

fixture->orig_sigmask,

2369

helper_directory, user,

2370

group, argv);

2371

g_assert_true(success);

2372

g_assert_cmpuint((unsigned int)queue->length, >, 0);

2373

2374

struct timespec starttime, currtime;

2375

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);

2376

do {

2377

queue->next_run = 0;

2378

string_set cancelled_filenames = {};

2379

g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));

2380

g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));

2381

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);

2382

} while(((queue->length) > 0)

2383

and (not quit_now)

2384

and ((currtime.tv_sec - starttime.tv_sec) < 10));

2385

2386

g_assert_false(quit_now);

2387

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

2388

g_assert_true(mandos_client_exited);

2389

2390

g_assert_true(password_is_read);

2391

g_assert_nonnull(password.data);

2392

2393

uintmax_t id;

2394

g_assert_cmpint(sscanf(password.data, "%" SCNuMAX "\n", &id),

2395

==, 1);

2396

g_assert_true((uid_t)id == id);

2397

2398

g_assert_cmpuint((unsigned int)id, ==, 0);

2399

}

2400

2401

static void test_start_mandos_client_suid_egid(test_fixture *fixture,

2402

__attribute__((unused))

2403

gconstpointer

2404

user_data){

2405

if(not is_privileged()){

2406

g_test_skip("Not privileged");

2407

return;

2408

}

2409

2410

bool mandos_client_exited = false;

2411

bool quit_now = false;

2412

__attribute__((cleanup(cleanup_close)))

2413

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

2414

g_assert_cmpint(epoll_fd, >=, 0);

2415

__attribute__((cleanup(cleanup_queue)))

2416

task_queue *queue = create_queue();

2417

g_assert_nonnull(queue);

2418

__attribute__((cleanup(cleanup_buffer)))

2419

buffer password = {};

2420

bool password_is_read = false;

2421

const char helper_directory[] = "/nonexistent";

2422

const char *const argv[] = { "/usr/bin/id", "--group", NULL };

2423

uid_t user = 1000;

2424

gid_t group = 1001;

2425

2426

const bool success = start_mandos_client(queue, epoll_fd,

2427

&mandos_client_exited,

2428

&quit_now, &password,

2429

&password_is_read,

2430

&fixture->orig_sigaction,

2431

fixture->orig_sigmask,

2432

helper_directory, user,

2433

group, argv);

2434

g_assert_true(success);

2435

g_assert_cmpuint((unsigned int)queue->length, >, 0);

2436

2437

struct timespec starttime, currtime;

2438

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);

2439

do {

2440

queue->next_run = 0;

2441

string_set cancelled_filenames = {};

2442

g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));

2443

g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));

2444

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);

2445

} while(((queue->length) > 0)

2446

and (not quit_now)

2447

and ((currtime.tv_sec - starttime.tv_sec) < 10));

2448

2449

g_assert_false(quit_now);

2450

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

2451

g_assert_true(mandos_client_exited);

2452

2453

g_assert_true(password_is_read);

2454

g_assert_nonnull(password.data);

2455

2456

uintmax_t id;

2457

g_assert_cmpint(sscanf(password.data, "%" SCNuMAX "\n", &id),

2458

==, 1);

2459

g_assert_true((gid_t)id == id);

2460

2461

g_assert_cmpuint((unsigned int)id, ==, 0);

2462

}

2463

2464

static void test_start_mandos_client_suid_ruid(test_fixture *fixture,

2465

__attribute__((unused))

2466

gconstpointer

2467

user_data){

2468

if(not is_privileged()){

2469

g_test_skip("Not privileged");

2470

return;

2471

}

2472

2473

bool mandos_client_exited = false;

2474

bool quit_now = false;

2475

__attribute__((cleanup(cleanup_close)))

2476

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

2477

g_assert_cmpint(epoll_fd, >=, 0);

2478

__attribute__((cleanup(cleanup_queue)))

2479

task_queue *queue = create_queue();

2480

g_assert_nonnull(queue);

2481

__attribute__((cleanup(cleanup_buffer)))

2482

buffer password = {};

2483

bool password_is_read = false;

2484

const char helper_directory[] = "/nonexistent";

2485

const char *const argv[] = { "/usr/bin/id", "--user", "--real",

2486

NULL };

2487

uid_t user = 1000;

2488

gid_t group = 1001;

2489

2490

const bool success = start_mandos_client(queue, epoll_fd,

2491

&mandos_client_exited,

2492

&quit_now, &password,

2493

&password_is_read,

2494

&fixture->orig_sigaction,

2495

fixture->orig_sigmask,

2496

helper_directory, user,

2497

group, argv);

2498

g_assert_true(success);

2499

g_assert_cmpuint((unsigned int)queue->length, >, 0);

2500

2501

struct timespec starttime, currtime;

2502

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);

2503

do {

2504

queue->next_run = 0;

2505

string_set cancelled_filenames = {};

2506

g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));

2507

g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));

2508

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);

2509

} while(((queue->length) > 0)

2510

and (not quit_now)

2511

and ((currtime.tv_sec - starttime.tv_sec) < 10));

2512

2513

g_assert_false(quit_now);

2514

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

2515

g_assert_true(mandos_client_exited);

2516

2517

g_assert_true(password_is_read);

2518

g_assert_nonnull(password.data);

2519

2520

uintmax_t id;

2521

g_assert_cmpint(sscanf(password.data, "%" SCNuMAX "\n", &id),

2522

==, 1);

2523

g_assert_true((uid_t)id == id);

2524

2525

g_assert_cmpuint((unsigned int)id, ==, user);

2526

}

2527

2528

static void test_start_mandos_client_suid_rgid(test_fixture *fixture,

2529

__attribute__((unused))

2530

gconstpointer

2531

user_data){

2532

if(not is_privileged()){

2533

g_test_skip("Not privileged");

2534

return;

2535

}

2536

2537

bool mandos_client_exited = false;

2538

bool quit_now = false;

2539

__attribute__((cleanup(cleanup_close)))

2540

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

2541

g_assert_cmpint(epoll_fd, >=, 0);

2542

__attribute__((cleanup(cleanup_queue)))

2543

task_queue *queue = create_queue();

2544

g_assert_nonnull(queue);

2545

__attribute__((cleanup(cleanup_buffer)))

2546

buffer password = {};

2547

bool password_is_read = false;

2548

const char helper_directory[] = "/nonexistent";

2549

const char *const argv[] = { "/usr/bin/id", "--group", "--real",

2550

NULL };

2551

uid_t user = 1000;

2552

gid_t group = 1001;

2553

2554

const bool success = start_mandos_client(queue, epoll_fd,

2555

&mandos_client_exited,

2556

&quit_now, &password,

2557

&password_is_read,

2558

&fixture->orig_sigaction,

2559

fixture->orig_sigmask,

2560

helper_directory, user,

2561

group, argv);

2562

g_assert_true(success);

2563

g_assert_cmpuint((unsigned int)queue->length, >, 0);

2564

2565

struct timespec starttime, currtime;

2566

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);

2567

do {

2568

queue->next_run = 0;

2569

string_set cancelled_filenames = {};

2570

g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));

2571

g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));

2572

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);

2573

} while(((queue->length) > 0)

2574

and (not quit_now)

2575

and ((currtime.tv_sec - starttime.tv_sec) < 10));

2576

2577

g_assert_false(quit_now);

2578

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

2579

g_assert_true(mandos_client_exited);

2580

2581

g_assert_true(password_is_read);

2582

g_assert_nonnull(password.data);

2583

2584

uintmax_t id;

2585

g_assert_cmpint(sscanf(password.data, "%" SCNuMAX "\n", &id),

2586

==, 1);

2587

g_assert_true((gid_t)id == id);

2588

2589

g_assert_cmpuint((unsigned int)id, ==, group);

2590

}

2591

2592

static void test_start_mandos_client_read(test_fixture *fixture,

2593

__attribute__((unused))

2594

gconstpointer user_data){

2595

bool mandos_client_exited = false;

2596

bool quit_now = false;

2597

__attribute__((cleanup(cleanup_close)))

2598

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

2599

g_assert_cmpint(epoll_fd, >=, 0);

2600

__attribute__((cleanup(cleanup_queue)))

2601

task_queue *queue = create_queue();

2602

g_assert_nonnull(queue);

2603

__attribute__((cleanup(cleanup_buffer)))

2604

buffer password = {};

2605

bool password_is_read = false;

2606

const char dummy_test_password[] = "dummy test password";

2607

const char helper_directory[] = "/nonexistent";

2608

const char *const argv[] = { "/bin/echo", "-n", dummy_test_password,

2609

NULL };

2610

2611

const bool success = start_mandos_client(queue, epoll_fd,

2612

&mandos_client_exited,

2613

&quit_now, &password,

2614

&password_is_read,

2615

&fixture->orig_sigaction,

2616

fixture->orig_sigmask,

2617

helper_directory, 0, 0,

2618

argv);

2619

g_assert_true(success);

2620

g_assert_cmpuint((unsigned int)queue->length, >, 0);

2621

2622

struct timespec starttime, currtime;

2623

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);

2624

do {

2625

queue->next_run = 0;

2626

string_set cancelled_filenames = {};

2627

g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));

2628

g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));

2629

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);

2630

} while(((queue->length) > 0)

2631

and (not quit_now)

2632

and ((currtime.tv_sec - starttime.tv_sec) < 10));

2633

2634

g_assert_false(quit_now);

2635

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

2636

g_assert_true(mandos_client_exited);

2637

2638

g_assert_true(password_is_read);

2639

g_assert_cmpint((int)password.length, ==,

2640

sizeof(dummy_test_password)-1);

2641

g_assert_nonnull(password.data);

2642

g_assert_cmpint(memcmp(dummy_test_password, password.data,

2643

sizeof(dummy_test_password)-1), ==, 0);

2644

}

2645

2646

static

2647

void test_start_mandos_client_helper_directory(test_fixture *fixture,

2648

__attribute__((unused))

2649

gconstpointer

2650

user_data){

2651

bool mandos_client_exited = false;

2652

bool quit_now = false;

2653

__attribute__((cleanup(cleanup_close)))

2654

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

2655

g_assert_cmpint(epoll_fd, >=, 0);

2656

__attribute__((cleanup(cleanup_queue)))

2657

task_queue *queue = create_queue();

2658

g_assert_nonnull(queue);

2659

__attribute__((cleanup(cleanup_buffer)))

2660

buffer password = {};

2661

bool password_is_read = false;

2662

const char helper_directory[] = "/nonexistent";

2663

const char *const argv[] = { "/bin/sh", "-c",

2664

"printf %s \"${MANDOSPLUGINHELPERDIR}\"", NULL };

2665

2666

const bool success = start_mandos_client(queue, epoll_fd,

2667

&mandos_client_exited,

2668

&quit_now, &password,

2669

&password_is_read,

2670

&fixture->orig_sigaction,

2671

fixture->orig_sigmask,

2672

helper_directory, 0, 0,

2673

argv);

2674

g_assert_true(success);

2675

g_assert_cmpuint((unsigned int)queue->length, >, 0);

2676

2677

struct timespec starttime, currtime;

2678

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);

2679

do {

2680

queue->next_run = 0;

2681

string_set cancelled_filenames = {};

2682

g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));

2683

g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));

2684

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);

2685

} while(((queue->length) > 0)

2686

and (not quit_now)

2687

and ((currtime.tv_sec - starttime.tv_sec) < 10));

2688

2689

g_assert_false(quit_now);

2690

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

2691

g_assert_true(mandos_client_exited);

2692

2693

g_assert_true(password_is_read);

2694

g_assert_cmpint((int)password.length, ==,

2695

sizeof(helper_directory)-1);

2696

g_assert_nonnull(password.data);

2697

g_assert_cmpint(memcmp(helper_directory, password.data,

2698

sizeof(helper_directory)-1), ==, 0);

2699

}

2700

2701

__attribute__((nonnull, warn_unused_result))

2702

static bool proc_status_sigblk_to_sigset(const char *const,

2703

sigset_t *const);

2704

2705

static void test_start_mandos_client_sigmask(test_fixture *fixture,

2706

__attribute__((unused))

2707

gconstpointer user_data){

2708

bool mandos_client_exited = false;

2709

bool quit_now = false;

2710

__attribute__((cleanup(cleanup_close)))

2711

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

2712

g_assert_cmpint(epoll_fd, >=, 0);

2713

__attribute__((cleanup(cleanup_queue)))

2714

task_queue *queue = create_queue();

2715

g_assert_nonnull(queue);

2716

__attribute__((cleanup(cleanup_buffer)))

2717

buffer password = {};

2718

bool password_is_read = false;

2719

const char helper_directory[] = "/nonexistent";

2720

/* see proc(5) for format of /proc/self/status */

2721

const char *const argv[] = { "/usr/bin/awk",

2722

"$1==\"SigBlk:\"{ print $2 }", "/proc/self/status", NULL };

2723

2724

g_assert_true(start_mandos_client(queue, epoll_fd,

2725

&mandos_client_exited, &quit_now,

2726

&password, &password_is_read,

2727

&fixture->orig_sigaction,

2728

fixture->orig_sigmask,

2729

helper_directory, 0, 0, argv));

2730

2731

struct timespec starttime, currtime;

2732

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);

2733

do {

2734

queue->next_run = 0;

2735

string_set cancelled_filenames = {};

2736

g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));

2737

g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));

2738

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);

2739

} while((not (mandos_client_exited and password_is_read))

2740

and (not quit_now)

2741

and ((currtime.tv_sec - starttime.tv_sec) < 10));

2742

g_assert_true(mandos_client_exited);

2743

g_assert_true(password_is_read);

2744

2745

sigset_t parsed_sigmask;

2746

g_assert_true(proc_status_sigblk_to_sigset(password.data,

2747

&parsed_sigmask));

2748

2749

for(int signum = 1; signum < NSIG; signum++){

2750

const bool has_signal = sigismember(&parsed_sigmask, signum);

2751

if(sigismember(&fixture->orig_sigmask, signum)){

2752

g_assert_true(has_signal);

2753

} else {

2754

g_assert_false(has_signal);

2755

}

2756

}

2757

}

2758

2759

__attribute__((nonnull, warn_unused_result))

2760

static bool proc_status_sigblk_to_sigset(const char *const sigblk,

2761

sigset_t *const sigmask){

2762

/* parse /proc/PID/status SigBlk value and convert to a sigset_t */

2763

uintmax_t scanned_sigmask;

2764

if(sscanf(sigblk, "%" SCNxMAX " ", &scanned_sigmask) != 1){

2765

return false;

2766

}

2767

if(sigemptyset(sigmask) != 0){

2768

return false;

2769

}

2770

for(int signum = 1; signum < NSIG; signum++){

2771

if(scanned_sigmask & ((uintmax_t)1 << (signum-1))){

2772

if(sigaddset(sigmask, signum) != 0){

2773

return false;

2774

}

2775

}

2776

}

2777

return true;

2778

}

2779

2780

static void run_task_with_stderr_to_dev_null(const task_context task,

2781

task_queue *const queue);

2782

2783

static

2784

void test_wait_for_mandos_client_exit_badpid(__attribute__((unused))

2785

test_fixture *fixture,

2786

__attribute__((unused))

2787

gconstpointer user_data){

2788

2789

bool mandos_client_exited = false;

2790

bool quit_now = false;

2791

2792

__attribute__((cleanup(cleanup_queue)))

2793

task_queue *queue = create_queue();

2794

g_assert_nonnull(queue);

2795

const task_context task = {

2796

.func=wait_for_mandos_client_exit,

2797

.pid=1,

2798

.mandos_client_exited=&mandos_client_exited,

2799

.quit_now=&quit_now,

2800

};

2801

run_task_with_stderr_to_dev_null(task, queue);

2802

2803

g_assert_false(mandos_client_exited);

2804

g_assert_true(quit_now);

2805

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

2806

}

2807

2808

static void run_task_with_stderr_to_dev_null(const task_context task,

2809

task_queue *const queue){

2810

FILE *real_stderr = stderr;

2811

FILE *devnull = fopen("/dev/null", "we");

2812

g_assert_nonnull(devnull);

2813

2814

stderr = devnull;

2815

task.func(task, queue);

2816

stderr = real_stderr;

2817

2818

g_assert_cmpint(fclose(devnull), ==, 0);

2819

}

2820

2821

static

2822

void test_wait_for_mandos_client_exit_noexit(test_fixture *fixture,

2823

__attribute__((unused))

2824

gconstpointer user_data){

2825

bool mandos_client_exited = false;

2826

bool quit_now = false;

2827

2828

pid_t create_eternal_process(void){

2829

const pid_t pid = fork();

2830

if(pid == 0){ /* Child */

2831

if(not restore_signal_handler(&fixture->orig_sigaction)){

2832

_exit(EXIT_FAILURE);

2833

}

2834

if(not restore_sigmask(&fixture->orig_sigmask)){

2835

_exit(EXIT_FAILURE);

2836

}

2837

while(true){

2838

pause();

2839

}

2840

}

2841

return pid;

2842

}

2843

pid_t pid = create_eternal_process();

2844

g_assert_true(pid != -1);

2845

2846

__attribute__((cleanup(cleanup_queue)))

2847

task_queue *queue = create_queue();

2848

g_assert_nonnull(queue);

2849

const task_context task = {

2850

.func=wait_for_mandos_client_exit,

2851

.pid=pid,

2852

.mandos_client_exited=&mandos_client_exited,

2853

.quit_now=&quit_now,

2854

};

2855

task.func(task, queue);

2856

2857

g_assert_false(mandos_client_exited);

2858

g_assert_false(quit_now);

2859

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

2860

2861

g_assert_nonnull(find_matching_task(queue, (task_context){

2862

.func=wait_for_mandos_client_exit,

2863

.pid=task.pid,

2864

.mandos_client_exited=&mandos_client_exited,

2865

.quit_now=&quit_now,

2866

}));

2867

}

2868

2869

static

2870

void test_wait_for_mandos_client_exit_success(test_fixture *fixture,

2871

__attribute__((unused))

2872

gconstpointer

2873

user_data){

2874

bool mandos_client_exited = false;

2875

bool quit_now = false;

2876

2877

pid_t create_successful_process(void){

2878

const pid_t pid = fork();

2879

if(pid == 0){ /* Child */

2880

if(not restore_signal_handler(&fixture->orig_sigaction)){

2881

_exit(EXIT_FAILURE);

2882

}

2883

if(not restore_sigmask(&fixture->orig_sigmask)){

2884

_exit(EXIT_FAILURE);

2885

}

2886

exit(EXIT_SUCCESS);

2887

}

2888

return pid;

2889

}

2890

const pid_t pid = create_successful_process();

2891

g_assert_true(pid != -1);

2892

2893

__attribute__((cleanup(cleanup_queue)))

2894

task_queue *queue = create_queue();

2895

g_assert_nonnull(queue);

2896

const task_context initial_task = {

2897

.func=wait_for_mandos_client_exit,

2898

.pid=pid,

2899

.mandos_client_exited=&mandos_client_exited,

2900

.quit_now=&quit_now,

2901

};

2902

g_assert_true(add_to_queue(queue, initial_task));

2903

2904

struct timespec starttime, currtime;

2905

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);

2906

__attribute__((cleanup(cleanup_close)))

2907

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

2908

do {

2909

queue->next_run = 0;

2910

g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));

2911

g_assert_true(run_queue(&queue, (string_set[]){{}}, &quit_now));

2912

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);

2913

} while((not mandos_client_exited)

2914

and (not quit_now)

2915

and ((currtime.tv_sec - starttime.tv_sec) < 10));

2916

2917

g_assert_true(mandos_client_exited);

2918

g_assert_false(quit_now);

2919

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

2920

}

2921

2922

static

2923

void test_wait_for_mandos_client_exit_failure(test_fixture *fixture,

2924

__attribute__((unused))

2925

gconstpointer

2926

user_data){

2927

bool mandos_client_exited = false;

2928

bool quit_now = false;

2929

2930

pid_t create_failing_process(void){

2931

const pid_t pid = fork();

2932

if(pid == 0){ /* Child */

2933

if(not restore_signal_handler(&fixture->orig_sigaction)){

2934

_exit(EXIT_FAILURE);

2935

}

2936

if(not restore_sigmask(&fixture->orig_sigmask)){

2937

_exit(EXIT_FAILURE);

2938

}

2939

exit(EXIT_FAILURE);

2940

}

2941

return pid;

2942

}

2943

const pid_t pid = create_failing_process();

2944

g_assert_true(pid != -1);

2945

2946

__attribute__((cleanup(string_set_clear)))

2947

string_set cancelled_filenames = {};

2948

__attribute__((cleanup(cleanup_close)))

2949

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

2950

g_assert_cmpint(epoll_fd, >=, 0);

2951

__attribute__((cleanup(cleanup_queue)))

2952

task_queue *queue = create_queue();

2953

g_assert_nonnull(queue);

2954

g_assert_true(add_to_queue(queue, (task_context){

2955

.func=wait_for_mandos_client_exit,

2956

.pid=pid,

2957

.mandos_client_exited=&mandos_client_exited,

2958

.quit_now=&quit_now,

2959

}));

2960

2961

g_assert_true(sigismember(&fixture->orig_sigmask, SIGCHLD) == 0);

2962

2963

__attribute__((cleanup(cleanup_close)))

2964

const int devnull_fd = open("/dev/null",

2965

O_WRONLY | O_CLOEXEC | O_NOCTTY);

2966

g_assert_cmpint(devnull_fd, >=, 0);

2967

__attribute__((cleanup(cleanup_close)))

2968

const int real_stderr_fd = dup(STDERR_FILENO);

2969

g_assert_cmpint(real_stderr_fd, >=, 0);

2970

2971

struct timespec starttime, currtime;

2972

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);

2973

do {

2974

g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));

2975

dup2(devnull_fd, STDERR_FILENO);

2976

const bool success = run_queue(&queue, &cancelled_filenames,

2977

&quit_now);

2978

dup2(real_stderr_fd, STDERR_FILENO);

2979

if(not success){

2980

break;

2981

}

2982

2983

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);

2984

} while((not mandos_client_exited)

2985

and (not quit_now)

2986

and ((currtime.tv_sec - starttime.tv_sec) < 10));

2987

2988

g_assert_true(quit_now);

2989

g_assert_true(mandos_client_exited);

2990

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

2991

}

2992

2993

static

2994

void test_wait_for_mandos_client_exit_killed(test_fixture *fixture,

2995

__attribute__((unused))

2996

gconstpointer user_data){

2997

bool mandos_client_exited = false;

2998

bool quit_now = false;

2999

3000

pid_t create_killed_process(void){

3001

const pid_t pid = fork();

3002

if(pid == 0){ /* Child */

3003

if(not restore_signal_handler(&fixture->orig_sigaction)){

3004

_exit(EXIT_FAILURE);

3005

}

3006

if(not restore_sigmask(&fixture->orig_sigmask)){

3007

_exit(EXIT_FAILURE);

3008

}

3009

while(true){

3010

pause();

3011

}

3012

}

3013

kill(pid, SIGKILL);

3014

return pid;

3015

}

3016

const pid_t pid = create_killed_process();

3017

g_assert_true(pid != -1);

3018

3019

__attribute__((cleanup(string_set_clear)))

3020

string_set cancelled_filenames = {};

3021

__attribute__((cleanup(cleanup_close)))

3022

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3023

g_assert_cmpint(epoll_fd, >=, 0);

3024

__attribute__((cleanup(cleanup_queue)))

3025

task_queue *queue = create_queue();

3026

g_assert_nonnull(queue);

3027

g_assert_true(add_to_queue(queue, (task_context){

3028

.func=wait_for_mandos_client_exit,

3029

.pid=pid,

3030

.mandos_client_exited=&mandos_client_exited,

3031

.quit_now=&quit_now,

3032

}));

3033

3034

__attribute__((cleanup(cleanup_close)))

3035

const int devnull_fd = open("/dev/null",

3036

O_WRONLY | O_CLOEXEC, O_NOCTTY);

3037

g_assert_cmpint(devnull_fd, >=, 0);

3038

__attribute__((cleanup(cleanup_close)))

3039

const int real_stderr_fd = dup(STDERR_FILENO);

3040

g_assert_cmpint(real_stderr_fd, >=, 0);

3041

3042

struct timespec starttime, currtime;

3043

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &starttime) == 0);

3044

do {

3045

g_assert_true(wait_for_event(epoll_fd, queue->next_run, 0));

3046

dup2(devnull_fd, STDERR_FILENO);

3047

const bool success = run_queue(&queue, &cancelled_filenames,

3048

&quit_now);

3049

dup2(real_stderr_fd, STDERR_FILENO);

3050

if(not success){

3051

break;

3052

}

3053

3054

g_assert_true(clock_gettime(CLOCK_MONOTONIC, &currtime) == 0);

3055

} while((not mandos_client_exited)

3056

and (not quit_now)

3057

and ((currtime.tv_sec - starttime.tv_sec) < 10));

3058

3059

g_assert_true(mandos_client_exited);

3060

g_assert_true(quit_now);

3061

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

3062

}

3063

3064

static bool epoll_set_does_not_contain(int, int);

3065

3066

static

3067

void test_read_mandos_client_output_readerror(__attribute__((unused))

3068

test_fixture *fixture,

3069

__attribute__((unused))

3070

gconstpointer

3071

user_data){

3072

__attribute__((cleanup(cleanup_close)))

3073

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3074

g_assert_cmpint(epoll_fd, >=, 0);

3075

3076

__attribute__((cleanup(cleanup_buffer)))

3077

buffer password = {};

3078

3079

/* Reading /proc/self/mem from offset 0 will always give EIO */

3080

const int fd = open("/proc/self/mem",

3081

O_RDONLY | O_CLOEXEC | O_NOCTTY);

3082

3083

bool password_is_read = false;

3084

bool quit_now = false;

3085

__attribute__((cleanup(cleanup_queue)))

3086

task_queue *queue = create_queue();

3087

g_assert_nonnull(queue);

3088

3089

task_context task = {

3090

.func=read_mandos_client_output,

3091

.epoll_fd=epoll_fd,

3092

.fd=fd,

3093

.password=&password,

3094

.password_is_read=&password_is_read,

3095

.quit_now=&quit_now,

3096

};

3097

run_task_with_stderr_to_dev_null(task, queue);

3098

g_assert_false(password_is_read);

3099

g_assert_cmpint((int)password.length, ==, 0);

3100

g_assert_true(quit_now);

3101

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

3102

3103

g_assert_true(epoll_set_does_not_contain(epoll_fd, fd));

3104

3105

g_assert_cmpint(close(fd), ==, -1);

3106

}

3107

3108

static bool epoll_set_does_not_contain(int epoll_fd, int fd){

3109

return not epoll_set_contains(epoll_fd, fd, 0);

3110

}

3111

3112

static

3113

void test_read_mandos_client_output_nodata(__attribute__((unused))

3114

test_fixture *fixture,

3115

__attribute__((unused))

3116

gconstpointer user_data){

3117

__attribute__((cleanup(cleanup_close)))

3118

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3119

g_assert_cmpint(epoll_fd, >=, 0);

3120

3121

int pipefds[2];

3122

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

3123

3124

__attribute__((cleanup(cleanup_buffer)))

3125

buffer password = {};

3126

3127

bool password_is_read = false;

3128

bool quit_now = false;

3129

__attribute__((cleanup(cleanup_queue)))

3130

task_queue *queue = create_queue();

3131

g_assert_nonnull(queue);

3132

3133

task_context task = {

3134

.func=read_mandos_client_output,

3135

.epoll_fd=epoll_fd,

3136

.fd=pipefds[0],

3137

.password=&password,

3138

.password_is_read=&password_is_read,

3139

.quit_now=&quit_now,

3140

};

3141

task.func(task, queue);

3142

g_assert_false(password_is_read);

3143

g_assert_cmpint((int)password.length, ==, 0);

3144

g_assert_false(quit_now);

3145

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

3146

3147

g_assert_nonnull(find_matching_task(queue, (task_context){

3148

.func=read_mandos_client_output,

3149

.epoll_fd=epoll_fd,

3150

.fd=pipefds[0],

3151

.password=&password,

3152

.password_is_read=&password_is_read,

3153

.quit_now=&quit_now,

3154

}));

3155

3156

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

3157

EPOLLIN | EPOLLRDHUP));

3158

3159

g_assert_cmpint(close(pipefds[1]), ==, 0);

3160

}

3161

3162

static void test_read_mandos_client_output_eof(__attribute__((unused))

3163

test_fixture *fixture,

3164

__attribute__((unused))

3165

gconstpointer

3166

user_data){

3167

__attribute__((cleanup(cleanup_close)))

3168

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3169

g_assert_cmpint(epoll_fd, >=, 0);

3170

3171

int pipefds[2];

3172

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

3173

g_assert_cmpint(close(pipefds[1]), ==, 0);

3174

3175

__attribute__((cleanup(cleanup_buffer)))

3176

buffer password = {};

3177

3178

bool password_is_read = false;

3179

bool quit_now = false;

3180

__attribute__((cleanup(cleanup_queue)))

3181

task_queue *queue = create_queue();

3182

g_assert_nonnull(queue);

3183

3184

task_context task = {

3185

.func=read_mandos_client_output,

3186

.epoll_fd=epoll_fd,

3187

.fd=pipefds[0],

3188

.password=&password,

3189

.password_is_read=&password_is_read,

3190

.quit_now=&quit_now,

3191

};

3192

task.func(task, queue);

3193

g_assert_true(password_is_read);

3194

g_assert_cmpint((int)password.length, ==, 0);

3195

g_assert_false(quit_now);

3196

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

3197

3198

g_assert_true(epoll_set_does_not_contain(epoll_fd, pipefds[0]));

3199

3200

g_assert_cmpint(close(pipefds[0]), ==, -1);

3201

}

3202

3203

static

3204

void test_read_mandos_client_output_once(__attribute__((unused))

3205

test_fixture *fixture,

3206

__attribute__((unused))

3207

gconstpointer user_data){

3208

__attribute__((cleanup(cleanup_close)))

3209

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3210

g_assert_cmpint(epoll_fd, >=, 0);

3211

3212

int pipefds[2];

3213

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

3214

3215

const char dummy_test_password[] = "dummy test password";

3216

/* Start with a pre-allocated buffer */

3217

__attribute__((cleanup(cleanup_buffer)))

3218

buffer password = {

3219

.data=malloc(sizeof(dummy_test_password)),

3220

.length=0,

3221

.allocated=sizeof(dummy_test_password),

3222

};

3223

g_assert_nonnull(password.data);

3224

if(mlock(password.data, password.allocated) != 0){

3225

g_assert_true(errno == EPERM or errno == ENOMEM);

3226

}

3227

3228

bool password_is_read = false;

3229

bool quit_now = false;

3230

__attribute__((cleanup(cleanup_queue)))

3231

task_queue *queue = create_queue();

3232

g_assert_nonnull(queue);

3233

3234

g_assert_true(sizeof(dummy_test_password) <= PIPE_BUF);

3235

g_assert_cmpint((int)write(pipefds[1], dummy_test_password,

3236

sizeof(dummy_test_password)),

3237

==, (int)sizeof(dummy_test_password));

3238

3239

task_context task = {

3240

.func=read_mandos_client_output,

3241

.epoll_fd=epoll_fd,

3242

.fd=pipefds[0],

3243

.password=&password,

3244

.password_is_read=&password_is_read,

3245

.quit_now=&quit_now,

3246

};

3247

task.func(task, queue);

3248

3249

g_assert_false(password_is_read);

3250

g_assert_cmpint((int)password.length, ==,

3251

(int)sizeof(dummy_test_password));

3252

g_assert_nonnull(password.data);

3253

g_assert_cmpint(memcmp(password.data, dummy_test_password,

3254

sizeof(dummy_test_password)), ==, 0);

3255

3256

g_assert_false(quit_now);

3257

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

3258

3259

g_assert_nonnull(find_matching_task(queue, (task_context){

3260

.func=read_mandos_client_output,

3261

.epoll_fd=epoll_fd,

3262

.fd=pipefds[0],

3263

.password=&password,

3264

.password_is_read=&password_is_read,

3265

.quit_now=&quit_now,

3266

}));

3267

3268

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

3269

EPOLLIN | EPOLLRDHUP));

3270

3271

g_assert_cmpint(close(pipefds[1]), ==, 0);

3272

}

3273

3274

static

3275

void test_read_mandos_client_output_malloc(__attribute__((unused))

3276

test_fixture *fixture,

3277

__attribute__((unused))

3278

gconstpointer user_data){

3279

__attribute__((cleanup(cleanup_close)))

3280

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3281

g_assert_cmpint(epoll_fd, >=, 0);

3282

3283

int pipefds[2];

3284

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

3285

3286

const char dummy_test_password[] = "dummy test password";

3287

/* Start with an empty buffer */

3288

__attribute__((cleanup(cleanup_buffer)))

3289

buffer password = {};

3290

3291

bool password_is_read = false;

3292

bool quit_now = false;

3293

__attribute__((cleanup(cleanup_queue)))

3294

task_queue *queue = create_queue();

3295

g_assert_nonnull(queue);

3296

3297

g_assert_true(sizeof(dummy_test_password) <= PIPE_BUF);

3298

g_assert_cmpint((int)write(pipefds[1], dummy_test_password,

3299

sizeof(dummy_test_password)),

3300

==, (int)sizeof(dummy_test_password));

3301

3302

task_context task = {

3303

.func=read_mandos_client_output,

3304

.epoll_fd=epoll_fd,

3305

.fd=pipefds[0],

3306

.password=&password,

3307

.password_is_read=&password_is_read,

3308

.quit_now=&quit_now,

3309

};

3310

task.func(task, queue);

3311

3312

g_assert_false(password_is_read);

3313

g_assert_cmpint((int)password.length, ==,

3314

(int)sizeof(dummy_test_password));

3315

g_assert_nonnull(password.data);

3316

g_assert_cmpint(memcmp(password.data, dummy_test_password,

3317

sizeof(dummy_test_password)), ==, 0);

3318

3319

g_assert_false(quit_now);

3320

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

3321

3322

g_assert_nonnull(find_matching_task(queue, (task_context){

3323

.func=read_mandos_client_output,

3324

.epoll_fd=epoll_fd,

3325

.fd=pipefds[0],

3326

.password=&password,

3327

.password_is_read=&password_is_read,

3328

.quit_now=&quit_now,

3329

}));

3330

3331

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

3332

EPOLLIN | EPOLLRDHUP));

3333

3334

g_assert_cmpint(close(pipefds[1]), ==, 0);

3335

}

3336

3337

static

3338

void test_read_mandos_client_output_append(__attribute__((unused))

3339

test_fixture *fixture,

3340

__attribute__((unused))

3341

gconstpointer user_data){

3342

__attribute__((cleanup(cleanup_close)))

3343

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3344

g_assert_cmpint(epoll_fd, >=, 0);

3345

3346

int pipefds[2];

3347

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

3348

3349

const char dummy_test_password[] = "dummy test password";

3350

__attribute__((cleanup(cleanup_buffer)))

3351

buffer password = {

3352

.data=malloc(PIPE_BUF),

3353

.length=PIPE_BUF,

3354

.allocated=PIPE_BUF,

3355

};

3356

g_assert_nonnull(password.data);

3357

if(mlock(password.data, password.allocated) != 0){

3358

g_assert_true(errno == EPERM or errno == ENOMEM);

3359

}

3360

3361

memset(password.data, 'x', PIPE_BUF);

3362

char password_expected[PIPE_BUF];

3363

memcpy(password_expected, password.data, PIPE_BUF);

3364

3365

bool password_is_read = false;

3366

bool quit_now = false;

3367

__attribute__((cleanup(cleanup_queue)))

3368

task_queue *queue = create_queue();

3369

g_assert_nonnull(queue);

3370

3371

g_assert_true(sizeof(dummy_test_password) <= PIPE_BUF);

3372

g_assert_cmpint((int)write(pipefds[1], dummy_test_password,

3373

sizeof(dummy_test_password)),

3374

==, (int)sizeof(dummy_test_password));

3375

3376

task_context task = {

3377

.func=read_mandos_client_output,

3378

.epoll_fd=epoll_fd,

3379

.fd=pipefds[0],

3380

.password=&password,

3381

.password_is_read=&password_is_read,

3382

.quit_now=&quit_now,

3383

};

3384

task.func(task, queue);

3385

3386

g_assert_false(password_is_read);

3387

g_assert_cmpint((int)password.length, ==,

3388

PIPE_BUF + sizeof(dummy_test_password));

3389

g_assert_nonnull(password.data);

3390

g_assert_cmpint(memcmp(password_expected, password.data, PIPE_BUF),

3391

==, 0);

3392

g_assert_cmpint(memcmp(password.data + PIPE_BUF,

3393

dummy_test_password,

3394

sizeof(dummy_test_password)), ==, 0);

3395

g_assert_false(quit_now);

3396

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

3397

3398

g_assert_nonnull(find_matching_task(queue, (task_context){

3399

.func=read_mandos_client_output,

3400

.epoll_fd=epoll_fd,

3401

.fd=pipefds[0],

3402

.password=&password,

3403

.password_is_read=&password_is_read,

3404

.quit_now=&quit_now,

3405

}));

3406

3407

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

3408

EPOLLIN | EPOLLRDHUP));

3409

}

3410

3411

static char *make_temporary_directory(void);

3412

3413

static void test_add_inotify_dir_watch(__attribute__((unused))

3414

test_fixture *fixture,

3415

__attribute__((unused))

3416

gconstpointer user_data){

3417

__attribute__((cleanup(cleanup_close)))

3418

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3419

g_assert_cmpint(epoll_fd, >=, 0);

3420

__attribute__((cleanup(cleanup_queue)))

3421

task_queue *queue = create_queue();

3422

g_assert_nonnull(queue);

3423

__attribute__((cleanup(string_set_clear)))

3424

string_set cancelled_filenames = {};

3425

const mono_microsecs current_time = 0;

3426

3427

bool quit_now = false;

3428

buffer password = {};

3429

bool mandos_client_exited = false;

3430

bool password_is_read = false;

3431

3432

__attribute__((cleanup(cleanup_string)))

3433

char *tempdir = make_temporary_directory();

3434

g_assert_nonnull(tempdir);

3435

3436

g_assert_true(add_inotify_dir_watch(queue, epoll_fd, &quit_now,

3437

&password, tempdir,

3438

&cancelled_filenames,

3439

&current_time,

3440

&mandos_client_exited,

3441

&password_is_read));

3442

3443

g_assert_cmpuint((unsigned int)queue->length, >, 0);

3444

3445

const task_context *const added_read_task

3446

= find_matching_task(queue, (task_context){

3447

.func=read_inotify_event,

3448

.epoll_fd=epoll_fd,

3449

.quit_now=&quit_now,

3450

.password=&password,

3451

.filename=tempdir,

3452

.cancelled_filenames=&cancelled_filenames,

3453

.current_time=&current_time,

3454

.mandos_client_exited=&mandos_client_exited,

3455

.password_is_read=&password_is_read,

3456

});

3457

g_assert_nonnull(added_read_task);

3458

3459

g_assert_cmpint(added_read_task->fd, >, 2);

3460

g_assert_true(fd_has_cloexec_and_nonblock(added_read_task->fd));

3461

g_assert_true(epoll_set_contains(added_read_task->epoll_fd,

3462

added_read_task->fd,

3463

EPOLLIN | EPOLLRDHUP));

3464

3465

g_assert_cmpint(rmdir(tempdir), ==, 0);

3466

}

3467

3468

static char *make_temporary_directory(void){

3469

char *name = strdup("/tmp/mandosXXXXXX");

3470

g_assert_nonnull(name);

3471

char *result = mkdtemp(name);

3472

if(result == NULL){

3473

free(name);

3474

}

3475

return result;

3476

}

3477

3478

static void test_add_inotify_dir_watch_fail(__attribute__((unused))

3479

test_fixture *fixture,

3480

__attribute__((unused))

3481

gconstpointer user_data){

3482

__attribute__((cleanup(cleanup_close)))

3483

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3484

g_assert_cmpint(epoll_fd, >=, 0);

3485

__attribute__((cleanup(cleanup_queue)))

3486

task_queue *queue = create_queue();

3487

g_assert_nonnull(queue);

3488

__attribute__((cleanup(string_set_clear)))

3489

string_set cancelled_filenames = {};

3490

const mono_microsecs current_time = 0;

3491

3492

bool quit_now = false;

3493

buffer password = {};

3494

bool mandos_client_exited = false;

3495

bool password_is_read = false;

3496

3497

const char nonexistent_dir[] = "/nonexistent";

3498

3499

FILE *real_stderr = stderr;

3500

FILE *devnull = fopen("/dev/null", "we");

3501

g_assert_nonnull(devnull);

3502

stderr = devnull;

3503

g_assert_false(add_inotify_dir_watch(queue, epoll_fd, &quit_now,

3504

&password, nonexistent_dir,

3505

&cancelled_filenames,

3506

&current_time,

3507

&mandos_client_exited,

3508

&password_is_read));

3509

stderr = real_stderr;

3510

g_assert_cmpint(fclose(devnull), ==, 0);

3511

3512

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

3513

}

3514

3515

static void test_add_inotify_dir_watch_nondir(__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

const char not_a_directory[] = "/dev/tty";

3536

3537

FILE *real_stderr = stderr;

3538

FILE *devnull = fopen("/dev/null", "we");

3539

g_assert_nonnull(devnull);

3540

stderr = devnull;

3541

g_assert_false(add_inotify_dir_watch(queue, epoll_fd, &quit_now,

3542

&password, not_a_directory,

3543

&cancelled_filenames,

3544

&current_time,

3545

&mandos_client_exited,

3546

&password_is_read));

3547

stderr = real_stderr;

3548

g_assert_cmpint(fclose(devnull), ==, 0);

3549

3550

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

3551

}

3552

3553

static void test_add_inotify_dir_watch_EAGAIN(__attribute__((unused))

3554

test_fixture *fixture,

3555

__attribute__((unused))

3556

gconstpointer

3557

user_data){

3558

__attribute__((cleanup(cleanup_close)))

3559

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3560

g_assert_cmpint(epoll_fd, >=, 0);

3561

__attribute__((cleanup(cleanup_queue)))

3562

task_queue *queue = create_queue();

3563

g_assert_nonnull(queue);

3564

__attribute__((cleanup(string_set_clear)))

3565

string_set cancelled_filenames = {};

3566

const mono_microsecs current_time = 0;

3567

3568

bool quit_now = false;

3569

buffer password = {};

3570

bool mandos_client_exited = false;

3571

bool password_is_read = false;

3572

3573

__attribute__((cleanup(cleanup_string)))

3574

char *tempdir = make_temporary_directory();

3575

g_assert_nonnull(tempdir);

3576

3577

g_assert_true(add_inotify_dir_watch(queue, epoll_fd, &quit_now,

3578

&password, tempdir,

3579

&cancelled_filenames,

3580

&current_time,

3581

&mandos_client_exited,

3582

&password_is_read));

3583

3584

g_assert_cmpuint((unsigned int)queue->length, >, 0);

3585

3586

const task_context *const added_read_task

3587

= find_matching_task(queue,

3588

(task_context){ .func=read_inotify_event });

3589

g_assert_nonnull(added_read_task);

3590

3591

g_assert_cmpint(added_read_task->fd, >, 2);

3592

g_assert_true(fd_has_cloexec_and_nonblock(added_read_task->fd));

3593

3594

/* "sufficient to read at least one event." - inotify(7) */

3595

const size_t ievent_size = (sizeof(struct inotify_event)

3596

+ NAME_MAX + 1);

3597

struct inotify_event *ievent = malloc(ievent_size);

3598

g_assert_nonnull(ievent);

3599

3600

g_assert_cmpint(read(added_read_task->fd, ievent, ievent_size), ==,

3601

-1);

3602

g_assert_cmpint(errno, ==, EAGAIN);

3603

3604

free(ievent);

3605

3606

g_assert_cmpint(rmdir(tempdir), ==, 0);

3607

}

3608

3609

static char *make_temporary_file_in_directory(const char

3610

*const dir);

3611

3612

static

3613

void test_add_inotify_dir_watch_IN_CLOSE_WRITE(__attribute__((unused))

3614

test_fixture *fixture,

3615

__attribute__((unused))

3616

gconstpointer

3617

user_data){

3618

__attribute__((cleanup(cleanup_close)))

3619

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3620

g_assert_cmpint(epoll_fd, >=, 0);

3621

__attribute__((cleanup(cleanup_queue)))

3622

task_queue *queue = create_queue();

3623

g_assert_nonnull(queue);

3624

__attribute__((cleanup(string_set_clear)))

3625

string_set cancelled_filenames = {};

3626

const mono_microsecs current_time = 0;

3627

3628

bool quit_now = false;

3629

buffer password = {};

3630

bool mandos_client_exited = false;

3631

bool password_is_read = false;

3632

3633

__attribute__((cleanup(cleanup_string)))

3634

char *tempdir = make_temporary_directory();

3635

g_assert_nonnull(tempdir);

3636

3637

g_assert_true(add_inotify_dir_watch(queue, epoll_fd, &quit_now,

3638

&password, tempdir,

3639

&cancelled_filenames,

3640

&current_time,

3641

&mandos_client_exited,

3642

&password_is_read));

3643

3644

g_assert_cmpuint((unsigned int)queue->length, >, 0);

3645

3646

const task_context *const added_read_task

3647

= find_matching_task(queue,

3648

(task_context){ .func=read_inotify_event });

3649

g_assert_nonnull(added_read_task);

3650

3651

g_assert_cmpint(added_read_task->fd, >, 2);

3652

g_assert_true(fd_has_cloexec_and_nonblock(added_read_task->fd));

3653

3654

__attribute__((cleanup(cleanup_string)))

3655

char *filename = make_temporary_file_in_directory(tempdir);

3656

g_assert_nonnull(filename);

3657

3658

/* "sufficient to read at least one event." - inotify(7) */

3659

const size_t ievent_size = (sizeof(struct inotify_event)

3660

+ NAME_MAX + 1);

3661

struct inotify_event *ievent = malloc(ievent_size);

3662

g_assert_nonnull(ievent);

3663

3664

ssize_t read_size = 0;

3665

read_size = read(added_read_task->fd, ievent, ievent_size);

3666

3667

g_assert_cmpint((int)read_size, >, 0);

3668

g_assert_true(ievent->mask & IN_CLOSE_WRITE);

3669

g_assert_cmpstr(ievent->name, ==, basename(filename));

3670

3671

free(ievent);

3672

3673

g_assert_cmpint(unlink(filename), ==, 0);

3674

g_assert_cmpint(rmdir(tempdir), ==, 0);

3675

}

3676

3677

static char *make_temporary_prefixed_file_in_directory(const char

3678

*const prefix,

3679

const char

3680

*const dir){

3681

char *filename = NULL;

3682

g_assert_cmpint(asprintf(&filename, "%s/%sXXXXXX", dir, prefix),

3683

>, 0);

3684

g_assert_nonnull(filename);

3685

const int fd = mkostemp(filename, O_CLOEXEC);

3686

g_assert_cmpint(fd, >=, 0);

3687

g_assert_cmpint(close(fd), ==, 0);

3688

return filename;

3689

}

3690

3691

static char *make_temporary_file_in_directory(const char

3692

*const dir){

3693

return make_temporary_prefixed_file_in_directory("temp", dir);

3694

}

3695

3696

static

3697

void test_add_inotify_dir_watch_IN_MOVED_TO(__attribute__((unused))

3698

test_fixture *fixture,

3699

__attribute__((unused))

3700

gconstpointer user_data){

3701

__attribute__((cleanup(cleanup_close)))

3702

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3703

g_assert_cmpint(epoll_fd, >=, 0);

3704

__attribute__((cleanup(cleanup_queue)))

3705

task_queue *queue = create_queue();

3706

g_assert_nonnull(queue);

3707

__attribute__((cleanup(string_set_clear)))

3708

string_set cancelled_filenames = {};

3709

const mono_microsecs current_time = 0;

3710

3711

bool quit_now = false;

3712

buffer password = {};

3713

bool mandos_client_exited = false;

3714

bool password_is_read = false;

3715

3716

__attribute__((cleanup(cleanup_string)))

3717

char *watchdir = make_temporary_directory();

3718

g_assert_nonnull(watchdir);

3719

3720

g_assert_true(add_inotify_dir_watch(queue, epoll_fd, &quit_now,

3721

&password, watchdir,

3722

&cancelled_filenames,

3723

&current_time,

3724

&mandos_client_exited,

3725

&password_is_read));

3726

3727

g_assert_cmpuint((unsigned int)queue->length, >, 0);

3728

3729

const task_context *const added_read_task

3730

= find_matching_task(queue,

3731

(task_context){ .func=read_inotify_event });

3732

g_assert_nonnull(added_read_task);

3733

3734

g_assert_cmpint(added_read_task->fd, >, 2);

3735

g_assert_true(fd_has_cloexec_and_nonblock(added_read_task->fd));

3736

3737

char *sourcedir = make_temporary_directory();

3738

g_assert_nonnull(sourcedir);

3739

3740

__attribute__((cleanup(cleanup_string)))

3741

char *filename = make_temporary_file_in_directory(sourcedir);

3742

g_assert_nonnull(filename);

3743

3744

__attribute__((cleanup(cleanup_string)))

3745

char *targetfilename = NULL;

3746

g_assert_cmpint(asprintf(&targetfilename, "%s/%s", watchdir,

3747

basename(filename)), >, 0);

3748

g_assert_nonnull(targetfilename);

3749

3750

g_assert_cmpint(rename(filename, targetfilename), ==, 0);

3751

g_assert_cmpint(rmdir(sourcedir), ==, 0);

3752

free(sourcedir);

3753

3754

/* "sufficient to read at least one event." - inotify(7) */

3755

const size_t ievent_size = (sizeof(struct inotify_event)

3756

+ NAME_MAX + 1);

3757

struct inotify_event *ievent = malloc(ievent_size);

3758

g_assert_nonnull(ievent);

3759

3760

ssize_t read_size = read(added_read_task->fd, ievent, ievent_size);

3761

3762

g_assert_cmpint((int)read_size, >, 0);

3763

g_assert_true(ievent->mask & IN_MOVED_TO);

3764

g_assert_cmpstr(ievent->name, ==, basename(targetfilename));

3765

3766

free(ievent);

3767

3768

g_assert_cmpint(unlink(targetfilename), ==, 0);

3769

g_assert_cmpint(rmdir(watchdir), ==, 0);

3770

}

3771

3772

static

3773

void test_add_inotify_dir_watch_IN_MOVED_FROM(__attribute__((unused))

3774

test_fixture *fixture,

3775

__attribute__((unused))

3776

gconstpointer

3777

user_data){

3778

__attribute__((cleanup(cleanup_close)))

3779

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3780

g_assert_cmpint(epoll_fd, >=, 0);

3781

__attribute__((cleanup(cleanup_queue)))

3782

task_queue *queue = create_queue();

3783

g_assert_nonnull(queue);

3784

__attribute__((cleanup(string_set_clear)))

3785

string_set cancelled_filenames = {};

3786

const mono_microsecs current_time = 0;

3787

3788

bool quit_now = false;

3789

buffer password = {};

3790

bool mandos_client_exited = false;

3791

bool password_is_read = false;

3792

3793

__attribute__((cleanup(cleanup_string)))

3794

char *tempdir = make_temporary_directory();

3795

g_assert_nonnull(tempdir);

3796

3797

__attribute__((cleanup(cleanup_string)))

3798

char *tempfilename = make_temporary_file_in_directory(tempdir);

3799

g_assert_nonnull(tempfilename);

3800

3801

__attribute__((cleanup(cleanup_string)))

3802

char *targetdir = make_temporary_directory();

3803

g_assert_nonnull(targetdir);

3804

3805

__attribute__((cleanup(cleanup_string)))

3806

char *targetfilename = NULL;

3807

g_assert_cmpint(asprintf(&targetfilename, "%s/%s", targetdir,

3808

basename(tempfilename)), >, 0);

3809

g_assert_nonnull(targetfilename);

3810

3811

g_assert_true(add_inotify_dir_watch(queue, epoll_fd, &quit_now,

3812

&password, tempdir,

3813

&cancelled_filenames,

3814

&current_time,

3815

&mandos_client_exited,

3816

&password_is_read));

3817

3818

g_assert_cmpint(rename(tempfilename, targetfilename), ==, 0);

3819

3820

const task_context *const added_read_task

3821

= find_matching_task(queue,

3822

(task_context){ .func=read_inotify_event });

3823

g_assert_nonnull(added_read_task);

3824

3825

/* "sufficient to read at least one event." - inotify(7) */

3826

const size_t ievent_size = (sizeof(struct inotify_event)

3827

+ NAME_MAX + 1);

3828

struct inotify_event *ievent = malloc(ievent_size);

3829

g_assert_nonnull(ievent);

3830

3831

ssize_t read_size = read(added_read_task->fd, ievent, ievent_size);

3832

3833

g_assert_cmpint((int)read_size, >, 0);

3834

g_assert_true(ievent->mask & IN_MOVED_FROM);

3835

g_assert_cmpstr(ievent->name, ==, basename(tempfilename));

3836

3837

free(ievent);

3838

3839

g_assert_cmpint(unlink(targetfilename), ==, 0);

3840

g_assert_cmpint(rmdir(targetdir), ==, 0);

3841

g_assert_cmpint(rmdir(tempdir), ==, 0);

3842

}

3843

3844

static

3845

void test_add_inotify_dir_watch_IN_DELETE(__attribute__((unused))

3846

test_fixture *fixture,

3847

__attribute__((unused))

3848

gconstpointer user_data){

3849

__attribute__((cleanup(cleanup_close)))

3850

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3851

g_assert_cmpint(epoll_fd, >=, 0);

3852

__attribute__((cleanup(cleanup_queue)))

3853

task_queue *queue = create_queue();

3854

g_assert_nonnull(queue);

3855

__attribute__((cleanup(string_set_clear)))

3856

string_set cancelled_filenames = {};

3857

const mono_microsecs current_time = 0;

3858

3859

bool quit_now = false;

3860

buffer password = {};

3861

bool mandos_client_exited = false;

3862

bool password_is_read = false;

3863

3864

__attribute__((cleanup(cleanup_string)))

3865

char *tempdir = make_temporary_directory();

3866

g_assert_nonnull(tempdir);

3867

3868

__attribute__((cleanup(cleanup_string)))

3869

char *tempfile = make_temporary_file_in_directory(tempdir);

3870

g_assert_nonnull(tempfile);

3871

3872

g_assert_true(add_inotify_dir_watch(queue, epoll_fd, &quit_now,

3873

&password, tempdir,

3874

&cancelled_filenames,

3875

&current_time,

3876

&mandos_client_exited,

3877

&password_is_read));

3878

g_assert_cmpint(unlink(tempfile), ==, 0);

3879

3880

g_assert_cmpuint((unsigned int)queue->length, >, 0);

3881

3882

const task_context *const added_read_task

3883

= find_matching_task(queue,

3884

(task_context){ .func=read_inotify_event });

3885

g_assert_nonnull(added_read_task);

3886

3887

g_assert_cmpint(added_read_task->fd, >, 2);

3888

g_assert_true(fd_has_cloexec_and_nonblock(added_read_task->fd));

3889

3890

/* "sufficient to read at least one event." - inotify(7) */

3891

const size_t ievent_size = (sizeof(struct inotify_event)

3892

+ NAME_MAX + 1);

3893

struct inotify_event *ievent = malloc(ievent_size);

3894

g_assert_nonnull(ievent);

3895

3896

ssize_t read_size = 0;

3897

read_size = read(added_read_task->fd, ievent, ievent_size);

3898

3899

g_assert_cmpint((int)read_size, >, 0);

3900

g_assert_true(ievent->mask & IN_DELETE);

3901

g_assert_cmpstr(ievent->name, ==, basename(tempfile));

3902

3903

free(ievent);

3904

3905

g_assert_cmpint(rmdir(tempdir), ==, 0);

3906

}

3907

3908

static

3909

void test_add_inotify_dir_watch_IN_EXCL_UNLINK(__attribute__((unused))

3910

test_fixture *fixture,

3911

__attribute__((unused))

3912

gconstpointer

3913

user_data){

3914

__attribute__((cleanup(cleanup_close)))

3915

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3916

g_assert_cmpint(epoll_fd, >=, 0);

3917

__attribute__((cleanup(cleanup_queue)))

3918

task_queue *queue = create_queue();

3919

g_assert_nonnull(queue);

3920

__attribute__((cleanup(string_set_clear)))

3921

string_set cancelled_filenames = {};

3922

const mono_microsecs current_time = 0;

3923

3924

bool quit_now = false;

3925

buffer password = {};

3926

bool mandos_client_exited = false;

3927

bool password_is_read = false;

3928

3929

__attribute__((cleanup(cleanup_string)))

3930

char *tempdir = make_temporary_directory();

3931

g_assert_nonnull(tempdir);

3932

3933

__attribute__((cleanup(cleanup_string)))

3934

char *tempfile = make_temporary_file_in_directory(tempdir);

3935

g_assert_nonnull(tempfile);

3936

int tempfile_fd = open(tempfile, O_WRONLY | O_CLOEXEC | O_NOCTTY

3937

| O_NOFOLLOW);

3938

g_assert_cmpint(tempfile_fd, >, 2);

3939

3940

g_assert_true(add_inotify_dir_watch(queue, epoll_fd, &quit_now,

3941

&password, tempdir,

3942

&cancelled_filenames,

3943

&current_time,

3944

&mandos_client_exited,

3945

&password_is_read));

3946

g_assert_cmpint(unlink(tempfile), ==, 0);

3947

3948

g_assert_cmpuint((unsigned int)queue->length, >, 0);

3949

3950

const task_context *const added_read_task

3951

= find_matching_task(queue,

3952

(task_context){ .func=read_inotify_event });

3953

g_assert_nonnull(added_read_task);

3954

3955

g_assert_cmpint(added_read_task->fd, >, 2);

3956

g_assert_true(fd_has_cloexec_and_nonblock(added_read_task->fd));

3957

3958

/* "sufficient to read at least one event." - inotify(7) */

3959

const size_t ievent_size = (sizeof(struct inotify_event)

3960

+ NAME_MAX + 1);

3961

struct inotify_event *ievent = malloc(ievent_size);

3962

g_assert_nonnull(ievent);

3963

3964

ssize_t read_size = 0;

3965

read_size = read(added_read_task->fd, ievent, ievent_size);

3966

3967

g_assert_cmpint((int)read_size, >, 0);

3968

g_assert_true(ievent->mask & IN_DELETE);

3969

g_assert_cmpstr(ievent->name, ==, basename(tempfile));

3970

3971

g_assert_cmpint(close(tempfile_fd), ==, 0);

3972

3973

/* IN_EXCL_UNLINK should make the closing of the previously unlinked

3974

file not appear as an ievent, so we should not see it now. */

3975

read_size = read(added_read_task->fd, ievent, ievent_size);

3976

g_assert_cmpint((int)read_size, ==, -1);

3977

g_assert_true(errno == EAGAIN);

3978

3979

free(ievent);

3980

3981

g_assert_cmpint(rmdir(tempdir), ==, 0);

3982

}

3983

3984

static void test_read_inotify_event_readerror(__attribute__((unused))

3985

test_fixture *fixture,

3986

__attribute__((unused))

3987

gconstpointer

3988

user_data){

3989

__attribute__((cleanup(cleanup_close)))

3990

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

3991

g_assert_cmpint(epoll_fd, >=, 0);

3992

const mono_microsecs current_time = 0;

3993

3994

/* Reading /proc/self/mem from offset 0 will always result in EIO */

3995

const int fd = open("/proc/self/mem",

3996

O_RDONLY | O_CLOEXEC | O_NOCTTY);

3997

3998

bool quit_now = false;

3999

__attribute__((cleanup(cleanup_queue)))

4000

task_queue *queue = create_queue();

4001

g_assert_nonnull(queue);

4002

4003

task_context task = {

4004

.func=read_inotify_event,

4005

.epoll_fd=epoll_fd,

4006

.fd=fd,

4007

.quit_now=&quit_now,

4008

.filename=strdup("/nonexistent"),

4009

.cancelled_filenames = &(string_set){},

4010

.notafter=0,

4011

.current_time=&current_time,

4012

};

4013

g_assert_nonnull(task.filename);

4014

run_task_with_stderr_to_dev_null(task, queue);

4015

g_assert_true(quit_now);

4016

g_assert_true(queue->next_run == 0);

4017

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

4018

4019

g_assert_true(epoll_set_does_not_contain(epoll_fd, fd));

4020

4021

g_assert_cmpint(close(fd), ==, -1);

4022

}

4023

4024

static void test_read_inotify_event_bad_epoll(__attribute__((unused))

4025

test_fixture *fixture,

4026

__attribute__((unused))

4027

gconstpointer

4028

user_data){

4029

const mono_microsecs current_time = 17;

4030

4031

int pipefds[2];

4032

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

4033

const int epoll_fd = pipefds[0]; /* This will obviously fail */

4034

4035

bool quit_now = false;

4036

buffer password = {};

4037

bool mandos_client_exited = false;

4038

bool password_is_read = false;

4039

__attribute__((cleanup(cleanup_queue)))

4040

task_queue *queue = create_queue();

4041

g_assert_nonnull(queue);

4042

4043

task_context task = {

4044

.func=read_inotify_event,

4045

.epoll_fd=epoll_fd,

4046

.fd=pipefds[0],

4047

.quit_now=&quit_now,

4048

.password=&password,

4049

.filename=strdup("/nonexistent"),

4050

.cancelled_filenames = &(string_set){},

4051

.notafter=0,

4052

.current_time=&current_time,

4053

.mandos_client_exited=&mandos_client_exited,

4054

.password_is_read=&password_is_read,

4055

};

4056

g_assert_nonnull(task.filename);

4057

run_task_with_stderr_to_dev_null(task, queue);

4058

4059

g_assert_nonnull(find_matching_task(queue, task));

4060

g_assert_true(queue->next_run == 1000000 + current_time);

4061

4062

g_assert_cmpint(close(pipefds[0]), ==, 0);

4063

g_assert_cmpint(close(pipefds[1]), ==, 0);

4064

}

4065

4066

static void test_read_inotify_event_nodata(__attribute__((unused))

4067

test_fixture *fixture,

4068

__attribute__((unused))

4069

gconstpointer user_data){

4070

__attribute__((cleanup(cleanup_close)))

4071

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4072

g_assert_cmpint(epoll_fd, >=, 0);

4073

const mono_microsecs current_time = 0;

4074

4075

int pipefds[2];

4076

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

4077

4078

bool quit_now = false;

4079

buffer password = {};

4080

bool mandos_client_exited = false;

4081

bool password_is_read = false;

4082

__attribute__((cleanup(cleanup_queue)))

4083

task_queue *queue = create_queue();

4084

g_assert_nonnull(queue);

4085

4086

task_context task = {

4087

.func=read_inotify_event,

4088

.epoll_fd=epoll_fd,

4089

.fd=pipefds[0],

4090

.quit_now=&quit_now,

4091

.password=&password,

4092

.filename=strdup("/nonexistent"),

4093

.cancelled_filenames = &(string_set){},

4094

.notafter=0,

4095

.current_time=&current_time,

4096

.mandos_client_exited=&mandos_client_exited,

4097

.password_is_read=&password_is_read,

4098

};

4099

g_assert_nonnull(task.filename);

4100

task.func(task, queue);

4101

g_assert_false(quit_now);

4102

g_assert_true(queue->next_run == 0);

4103

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

4104

4105

g_assert_nonnull(find_matching_task(queue, (task_context){

4106

.func=read_inotify_event,

4107

.epoll_fd=epoll_fd,

4108

.fd=pipefds[0],

4109

.quit_now=&quit_now,

4110

.password=&password,

4111

.filename=task.filename,

4112

.cancelled_filenames=task.cancelled_filenames,

4113

.current_time=&current_time,

4114

.mandos_client_exited=&mandos_client_exited,

4115

.password_is_read=&password_is_read,

4116

}));

4117

4118

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

4119

EPOLLIN | EPOLLRDHUP));

4120

4121

g_assert_cmpint(close(pipefds[1]), ==, 0);

4122

}

4123

4124

static void test_read_inotify_event_eof(__attribute__((unused))

4125

test_fixture *fixture,

4126

__attribute__((unused))

4127

gconstpointer user_data){

4128

__attribute__((cleanup(cleanup_close)))

4129

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4130

g_assert_cmpint(epoll_fd, >=, 0);

4131

const mono_microsecs current_time = 0;

4132

4133

int pipefds[2];

4134

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

4135

g_assert_cmpint(close(pipefds[1]), ==, 0);

4136

4137

bool quit_now = false;

4138

buffer password = {};

4139

__attribute__((cleanup(cleanup_queue)))

4140

task_queue *queue = create_queue();

4141

g_assert_nonnull(queue);

4142

4143

task_context task = {

4144

.func=read_inotify_event,

4145

.epoll_fd=epoll_fd,

4146

.fd=pipefds[0],

4147

.quit_now=&quit_now,

4148

.password=&password,

4149

.filename=strdup("/nonexistent"),

4150

.cancelled_filenames = &(string_set){},

4151

.notafter=0,

4152

.current_time=&current_time,

4153

};

4154

run_task_with_stderr_to_dev_null(task, queue);

4155

g_assert_true(quit_now);

4156

g_assert_true(queue->next_run == 0);

4157

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

4158

4159

g_assert_true(epoll_set_does_not_contain(epoll_fd, pipefds[0]));

4160

4161

g_assert_cmpint(close(pipefds[0]), ==, -1);

4162

}

4163

4164

static

4165

void test_read_inotify_event_IN_CLOSE_WRITE(__attribute__((unused))

4166

test_fixture *fixture,

4167

__attribute__((unused))

4168

gconstpointer user_data){

4169

__attribute__((cleanup(cleanup_close)))

4170

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4171

g_assert_cmpint(epoll_fd, >=, 0);

4172

const mono_microsecs current_time = 0;

4173

4174

int pipefds[2];

4175

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

4176

4177

/* "sufficient to read at least one event." - inotify(7) */

4178

const size_t ievent_max_size = (sizeof(struct inotify_event)

4179

+ NAME_MAX + 1);

4180

g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);

4181

struct {

4182

struct inotify_event event;

4183

char name_buffer[NAME_MAX + 1];

4184

} ievent_buffer;

4185

struct inotify_event *const ievent = &ievent_buffer.event;

4186

4187

const char dummy_file_name[] = "ask.dummy_file_name";

4188

ievent->mask = IN_CLOSE_WRITE;

4189

ievent->len = sizeof(dummy_file_name);

4190

memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));

4191

const size_t ievent_size = (sizeof(struct inotify_event)

4192

+ sizeof(dummy_file_name));

4193

#if defined(__GNUC__) and __GNUC__ >= 11

4194

#pragma GCC diagnostic push

4195

/* ievent is pointing into a struct which is of sufficient size */

4196

#pragma GCC diagnostic ignored "-Wstringop-overread"

4197

#endif

4198

g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),

4199

==, ievent_size);

4200

#if defined(__GNUC__) and __GNUC__ >= 11

4201

#pragma GCC diagnostic pop

4202

#endif

4203

g_assert_cmpint(close(pipefds[1]), ==, 0);

4204

4205

bool quit_now = false;

4206

buffer password = {};

4207

bool mandos_client_exited = false;

4208

bool password_is_read = false;

4209

__attribute__((cleanup(cleanup_queue)))

4210

task_queue *queue = create_queue();

4211

g_assert_nonnull(queue);

4212

4213

task_context task = {

4214

.func=read_inotify_event,

4215

.epoll_fd=epoll_fd,

4216

.fd=pipefds[0],

4217

.quit_now=&quit_now,

4218

.password=&password,

4219

.filename=strdup("/nonexistent"),

4220

.cancelled_filenames = &(string_set){},

4221

.notafter=0,

4222

.current_time=&current_time,

4223

.mandos_client_exited=&mandos_client_exited,

4224

.password_is_read=&password_is_read,

4225

};

4226

task.func(task, queue);

4227

g_assert_false(quit_now);

4228

g_assert_true(queue->next_run != 0);

4229

g_assert_cmpuint((unsigned int)queue->length, >=, 1);

4230

4231

g_assert_nonnull(find_matching_task(queue, (task_context){

4232

.func=read_inotify_event,

4233

.epoll_fd=epoll_fd,

4234

.fd=pipefds[0],

4235

.quit_now=&quit_now,

4236

.password=&password,

4237

.filename=task.filename,

4238

.cancelled_filenames=task.cancelled_filenames,

4239

.current_time=&current_time,

4240

.mandos_client_exited=&mandos_client_exited,

4241

.password_is_read=&password_is_read,

4242

}));

4243

4244

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

4245

EPOLLIN | EPOLLRDHUP));

4246

4247

g_assert_cmpuint((unsigned int)queue->length, >=, 2);

4248

4249

__attribute__((cleanup(cleanup_string)))

4250

char *filename = NULL;

4251

g_assert_cmpint(asprintf(&filename, "%s/%s", task.filename,

4252

dummy_file_name), >, 0);

4253

g_assert_nonnull(filename);

4254

g_assert_nonnull(find_matching_task(queue, (task_context){

4255

.func=open_and_parse_question,

4256

.epoll_fd=epoll_fd,

4257

.filename=filename,

4258

.question_filename=filename,

4259

.password=&password,

4260

.cancelled_filenames=task.cancelled_filenames,

4261

.current_time=&current_time,

4262

.mandos_client_exited=&mandos_client_exited,

4263

.password_is_read=&password_is_read,

4264

}));

4265

}

4266

4267

static

4268

void test_read_inotify_event_IN_MOVED_TO(__attribute__((unused))

4269

test_fixture *fixture,

4270

__attribute__((unused))

4271

gconstpointer user_data){

4272

__attribute__((cleanup(cleanup_close)))

4273

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4274

g_assert_cmpint(epoll_fd, >=, 0);

4275

const mono_microsecs current_time = 0;

4276

4277

int pipefds[2];

4278

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

4279

4280

/* "sufficient to read at least one event." - inotify(7) */

4281

const size_t ievent_max_size = (sizeof(struct inotify_event)

4282

+ NAME_MAX + 1);

4283

g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);

4284

struct {

4285

struct inotify_event event;

4286

char name_buffer[NAME_MAX + 1];

4287

} ievent_buffer;

4288

struct inotify_event *const ievent = &ievent_buffer.event;

4289

4290

const char dummy_file_name[] = "ask.dummy_file_name";

4291

ievent->mask = IN_MOVED_TO;

4292

ievent->len = sizeof(dummy_file_name);

4293

memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));

4294

const size_t ievent_size = (sizeof(struct inotify_event)

4295

+ sizeof(dummy_file_name));

4296

#if defined(__GNUC__) and __GNUC__ >= 11

4297

#pragma GCC diagnostic push

4298

/* ievent is pointing into a struct which is of sufficient size */

4299

#pragma GCC diagnostic ignored "-Wstringop-overread"

4300

#endif

4301

g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),

4302

==, ievent_size);

4303

#if defined(__GNUC__) and __GNUC__ >= 11

4304

#pragma GCC diagnostic pop

4305

#endif

4306

g_assert_cmpint(close(pipefds[1]), ==, 0);

4307

4308

bool quit_now = false;

4309

buffer password = {};

4310

bool mandos_client_exited = false;

4311

bool password_is_read = false;

4312

__attribute__((cleanup(cleanup_queue)))

4313

task_queue *queue = create_queue();

4314

g_assert_nonnull(queue);

4315

4316

task_context task = {

4317

.func=read_inotify_event,

4318

.epoll_fd=epoll_fd,

4319

.fd=pipefds[0],

4320

.quit_now=&quit_now,

4321

.password=&password,

4322

.filename=strdup("/nonexistent"),

4323

.cancelled_filenames = &(string_set){},

4324

.notafter=0,

4325

.current_time=&current_time,

4326

.mandos_client_exited=&mandos_client_exited,

4327

.password_is_read=&password_is_read,

4328

};

4329

task.func(task, queue);

4330

g_assert_false(quit_now);

4331

g_assert_true(queue->next_run != 0);

4332

g_assert_cmpuint((unsigned int)queue->length, >=, 1);

4333

4334

g_assert_nonnull(find_matching_task(queue, (task_context){

4335

.func=read_inotify_event,

4336

.epoll_fd=epoll_fd,

4337

.fd=pipefds[0],

4338

.quit_now=&quit_now,

4339

.password=&password,

4340

.filename=task.filename,

4341

.cancelled_filenames=task.cancelled_filenames,

4342

.current_time=&current_time,

4343

.mandos_client_exited=&mandos_client_exited,

4344

.password_is_read=&password_is_read,

4345

}));

4346

4347

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

4348

EPOLLIN | EPOLLRDHUP));

4349

4350

g_assert_cmpuint((unsigned int)queue->length, >=, 2);

4351

4352

__attribute__((cleanup(cleanup_string)))

4353

char *filename = NULL;

4354

g_assert_cmpint(asprintf(&filename, "%s/%s", task.filename,

4355

dummy_file_name), >, 0);

4356

g_assert_nonnull(filename);

4357

g_assert_nonnull(find_matching_task(queue, (task_context){

4358

.func=open_and_parse_question,

4359

.epoll_fd=epoll_fd,

4360

.filename=filename,

4361

.question_filename=filename,

4362

.password=&password,

4363

.cancelled_filenames=task.cancelled_filenames,

4364

.current_time=&current_time,

4365

.mandos_client_exited=&mandos_client_exited,

4366

.password_is_read=&password_is_read,

4367

}));

4368

}

4369

4370

static

4371

void test_read_inotify_event_IN_MOVED_FROM(__attribute__((unused))

4372

test_fixture *fixture,

4373

__attribute__((unused))

4374

gconstpointer user_data){

4375

__attribute__((cleanup(cleanup_close)))

4376

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4377

g_assert_cmpint(epoll_fd, >=, 0);

4378

__attribute__((cleanup(string_set_clear)))

4379

string_set cancelled_filenames = {};

4380

const mono_microsecs current_time = 0;

4381

4382

int pipefds[2];

4383

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

4384

4385

/* "sufficient to read at least one event." - inotify(7) */

4386

const size_t ievent_max_size = (sizeof(struct inotify_event)

4387

+ NAME_MAX + 1);

4388

g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);

4389

struct {

4390

struct inotify_event event;

4391

char name_buffer[NAME_MAX + 1];

4392

} ievent_buffer;

4393

struct inotify_event *const ievent = &ievent_buffer.event;

4394

4395

const char dummy_file_name[] = "ask.dummy_file_name";

4396

ievent->mask = IN_MOVED_FROM;

4397

ievent->len = sizeof(dummy_file_name);

4398

memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));

4399

const size_t ievent_size = (sizeof(struct inotify_event)

4400

+ sizeof(dummy_file_name));

4401

#if defined(__GNUC__) and __GNUC__ >= 11

4402

#pragma GCC diagnostic push

4403

/* ievent is pointing into a struct which is of sufficient size */

4404

#pragma GCC diagnostic ignored "-Wstringop-overread"

4405

#endif

4406

g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),

4407

==, ievent_size);

4408

#if defined(__GNUC__) and __GNUC__ >= 11

4409

#pragma GCC diagnostic pop

4410

#endif

4411

g_assert_cmpint(close(pipefds[1]), ==, 0);

4412

4413

bool quit_now = false;

4414

buffer password = {};

4415

bool mandos_client_exited = false;

4416

bool password_is_read = false;

4417

__attribute__((cleanup(cleanup_queue)))

4418

task_queue *queue = create_queue();

4419

g_assert_nonnull(queue);

4420

4421

task_context task = {

4422

.func=read_inotify_event,

4423

.epoll_fd=epoll_fd,

4424

.fd=pipefds[0],

4425

.quit_now=&quit_now,

4426

.password=&password,

4427

.filename=strdup("/nonexistent"),

4428

.cancelled_filenames=&cancelled_filenames,

4429

.current_time=&current_time,

4430

.mandos_client_exited=&mandos_client_exited,

4431

.password_is_read=&password_is_read,

4432

};

4433

task.func(task, queue);

4434

g_assert_false(quit_now);

4435

g_assert_true(queue->next_run == 0);

4436

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

4437

4438

g_assert_nonnull(find_matching_task(queue, (task_context){

4439

.func=read_inotify_event,

4440

.epoll_fd=epoll_fd,

4441

.fd=pipefds[0],

4442

.quit_now=&quit_now,

4443

.password=&password,

4444

.filename=task.filename,

4445

.cancelled_filenames=&cancelled_filenames,

4446

.current_time=&current_time,

4447

.mandos_client_exited=&mandos_client_exited,

4448

.password_is_read=&password_is_read,

4449

}));

4450

4451

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

4452

EPOLLIN | EPOLLRDHUP));

4453

4454

__attribute__((cleanup(cleanup_string)))

4455

char *filename = NULL;

4456

g_assert_cmpint(asprintf(&filename, "%s/%s", task.filename,

4457

dummy_file_name), >, 0);

4458

g_assert_nonnull(filename);

4459

g_assert_true(string_set_contains(*task.cancelled_filenames,

4460

filename));

4461

}

4462

4463

static void test_read_inotify_event_IN_DELETE(__attribute__((unused))

4464

test_fixture *fixture,

4465

__attribute__((unused))

4466

gconstpointer

4467

user_data){

4468

__attribute__((cleanup(cleanup_close)))

4469

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4470

g_assert_cmpint(epoll_fd, >=, 0);

4471

__attribute__((cleanup(string_set_clear)))

4472

string_set cancelled_filenames = {};

4473

const mono_microsecs current_time = 0;

4474

4475

int pipefds[2];

4476

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

4477

4478

/* "sufficient to read at least one event." - inotify(7) */

4479

const size_t ievent_max_size = (sizeof(struct inotify_event)

4480

+ NAME_MAX + 1);

4481

g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);

4482

struct {

4483

struct inotify_event event;

4484

char name_buffer[NAME_MAX + 1];

4485

} ievent_buffer;

4486

struct inotify_event *const ievent = &ievent_buffer.event;

4487

4488

const char dummy_file_name[] = "ask.dummy_file_name";

4489

ievent->mask = IN_DELETE;

4490

ievent->len = sizeof(dummy_file_name);

4491

memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));

4492

const size_t ievent_size = (sizeof(struct inotify_event)

4493

+ sizeof(dummy_file_name));

4494

#if defined(__GNUC__) and __GNUC__ >= 11

4495

#pragma GCC diagnostic push

4496

/* ievent is pointing into a struct which is of sufficient size */

4497

#pragma GCC diagnostic ignored "-Wstringop-overread"

4498

#endif

4499

g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),

4500

==, ievent_size);

4501

#if defined(__GNUC__) and __GNUC__ >= 11

4502

#pragma GCC diagnostic pop

4503

#endif

4504

g_assert_cmpint(close(pipefds[1]), ==, 0);

4505

4506

bool quit_now = false;

4507

buffer password = {};

4508

bool mandos_client_exited = false;

4509

bool password_is_read = false;

4510

__attribute__((cleanup(cleanup_queue)))

4511

task_queue *queue = create_queue();

4512

g_assert_nonnull(queue);

4513

4514

task_context task = {

4515

.func=read_inotify_event,

4516

.epoll_fd=epoll_fd,

4517

.fd=pipefds[0],

4518

.quit_now=&quit_now,

4519

.password=&password,

4520

.filename=strdup("/nonexistent"),

4521

.cancelled_filenames=&cancelled_filenames,

4522

.current_time=&current_time,

4523

.mandos_client_exited=&mandos_client_exited,

4524

.password_is_read=&password_is_read,

4525

};

4526

task.func(task, queue);

4527

g_assert_false(quit_now);

4528

g_assert_true(queue->next_run == 0);

4529

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

4530

4531

g_assert_nonnull(find_matching_task(queue, (task_context){

4532

.func=read_inotify_event,

4533

.epoll_fd=epoll_fd,

4534

.fd=pipefds[0],

4535

.quit_now=&quit_now,

4536

.password=&password,

4537

.filename=task.filename,

4538

.cancelled_filenames=&cancelled_filenames,

4539

.current_time=&current_time,

4540

.mandos_client_exited=&mandos_client_exited,

4541

.password_is_read=&password_is_read,

4542

}));

4543

4544

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

4545

EPOLLIN | EPOLLRDHUP));

4546

4547

__attribute__((cleanup(cleanup_string)))

4548

char *filename = NULL;

4549

g_assert_cmpint(asprintf(&filename, "%s/%s", task.filename,

4550

dummy_file_name), >, 0);

4551

g_assert_nonnull(filename);

4552

g_assert_true(string_set_contains(*task.cancelled_filenames,

4553

filename));

4554

}

4555

4556

static void

4557

test_read_inotify_event_IN_CLOSE_WRITE_badname(__attribute__((unused))

4558

test_fixture *fixture,

4559

__attribute__((unused))

4560

gconstpointer

4561

user_data){

4562

__attribute__((cleanup(cleanup_close)))

4563

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4564

g_assert_cmpint(epoll_fd, >=, 0);

4565

const mono_microsecs current_time = 0;

4566

4567

int pipefds[2];

4568

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

4569

4570

/* "sufficient to read at least one event." - inotify(7) */

4571

const size_t ievent_max_size = (sizeof(struct inotify_event)

4572

+ NAME_MAX + 1);

4573

g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);

4574

struct {

4575

struct inotify_event event;

4576

char name_buffer[NAME_MAX + 1];

4577

} ievent_buffer;

4578

struct inotify_event *const ievent = &ievent_buffer.event;

4579

4580

const char dummy_file_name[] = "ignored.dummy_file_name";

4581

ievent->mask = IN_CLOSE_WRITE;

4582

ievent->len = sizeof(dummy_file_name);

4583

memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));

4584

const size_t ievent_size = (sizeof(struct inotify_event)

4585

+ sizeof(dummy_file_name));

4586

#if defined(__GNUC__) and __GNUC__ >= 11

4587

#pragma GCC diagnostic push

4588

/* ievent is pointing into a struct which is of sufficient size */

4589

#pragma GCC diagnostic ignored "-Wstringop-overread"

4590

#endif

4591

g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),

4592

==, ievent_size);

4593

#if defined(__GNUC__) and __GNUC__ >= 11

4594

#pragma GCC diagnostic pop

4595

#endif

4596

g_assert_cmpint(close(pipefds[1]), ==, 0);

4597

4598

bool quit_now = false;

4599

buffer password = {};

4600

bool mandos_client_exited = false;

4601

bool password_is_read = false;

4602

__attribute__((cleanup(cleanup_queue)))

4603

task_queue *queue = create_queue();

4604

g_assert_nonnull(queue);

4605

4606

task_context task = {

4607

.func=read_inotify_event,

4608

.epoll_fd=epoll_fd,

4609

.fd=pipefds[0],

4610

.quit_now=&quit_now,

4611

.password=&password,

4612

.filename=strdup("/nonexistent"),

4613

.cancelled_filenames = &(string_set){},

4614

.notafter=0,

4615

.current_time=&current_time,

4616

.mandos_client_exited=&mandos_client_exited,

4617

.password_is_read=&password_is_read,

4618

};

4619

task.func(task, queue);

4620

g_assert_false(quit_now);

4621

g_assert_true(queue->next_run == 0);

4622

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

4623

4624

g_assert_nonnull(find_matching_task(queue, (task_context){

4625

.func=read_inotify_event,

4626

.epoll_fd=epoll_fd,

4627

.fd=pipefds[0],

4628

.quit_now=&quit_now,

4629

.password=&password,

4630

.filename=task.filename,

4631

.cancelled_filenames=task.cancelled_filenames,

4632

.current_time=&current_time,

4633

.mandos_client_exited=&mandos_client_exited,

4634

.password_is_read=&password_is_read,

4635

}));

4636

4637

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

4638

EPOLLIN | EPOLLRDHUP));

4639

}

4640

4641

static void

4642

test_read_inotify_event_IN_MOVED_TO_badname(__attribute__((unused))

4643

test_fixture *fixture,

4644

__attribute__((unused))

4645

gconstpointer user_data){

4646

__attribute__((cleanup(cleanup_close)))

4647

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4648

g_assert_cmpint(epoll_fd, >=, 0);

4649

const mono_microsecs current_time = 0;

4650

4651

int pipefds[2];

4652

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

4653

4654

/* "sufficient to read at least one event." - inotify(7) */

4655

const size_t ievent_max_size = (sizeof(struct inotify_event)

4656

+ NAME_MAX + 1);

4657

g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);

4658

struct {

4659

struct inotify_event event;

4660

char name_buffer[NAME_MAX + 1];

4661

} ievent_buffer;

4662

struct inotify_event *const ievent = &ievent_buffer.event;

4663

4664

const char dummy_file_name[] = "ignored.dummy_file_name";

4665

ievent->mask = IN_MOVED_TO;

4666

ievent->len = sizeof(dummy_file_name);

4667

memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));

4668

const size_t ievent_size = (sizeof(struct inotify_event)

4669

+ sizeof(dummy_file_name));

4670

#if defined(__GNUC__) and __GNUC__ >= 11

4671

#pragma GCC diagnostic push

4672

/* ievent is pointing into a struct which is of sufficient size */

4673

#pragma GCC diagnostic ignored "-Wstringop-overread"

4674

#endif

4675

g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),

4676

==, ievent_size);

4677

#if defined(__GNUC__) and __GNUC__ >= 11

4678

#pragma GCC diagnostic pop

4679

#endif

4680

g_assert_cmpint(close(pipefds[1]), ==, 0);

4681

4682

bool quit_now = false;

4683

buffer password = {};

4684

bool mandos_client_exited = false;

4685

bool password_is_read = false;

4686

__attribute__((cleanup(cleanup_queue)))

4687

task_queue *queue = create_queue();

4688

g_assert_nonnull(queue);

4689

4690

task_context task = {

4691

.func=read_inotify_event,

4692

.epoll_fd=epoll_fd,

4693

.fd=pipefds[0],

4694

.quit_now=&quit_now,

4695

.password=&password,

4696

.filename=strdup("/nonexistent"),

4697

.cancelled_filenames = &(string_set){},

4698

.notafter=0,

4699

.current_time=&current_time,

4700

.mandos_client_exited=&mandos_client_exited,

4701

.password_is_read=&password_is_read,

4702

};

4703

task.func(task, queue);

4704

g_assert_false(quit_now);

4705

g_assert_true(queue->next_run == 0);

4706

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

4707

4708

g_assert_nonnull(find_matching_task(queue, (task_context){

4709

.func=read_inotify_event,

4710

.epoll_fd=epoll_fd,

4711

.fd=pipefds[0],

4712

.quit_now=&quit_now,

4713

.password=&password,

4714

.filename=task.filename,

4715

.cancelled_filenames=task.cancelled_filenames,

4716

.current_time=&current_time,

4717

.mandos_client_exited=&mandos_client_exited,

4718

.password_is_read=&password_is_read,

4719

}));

4720

4721

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

4722

EPOLLIN | EPOLLRDHUP));

4723

}

4724

4725

static void

4726

test_read_inotify_event_IN_MOVED_FROM_badname(__attribute__((unused))

4727

test_fixture *fixture,

4728

__attribute__((unused))

4729

gconstpointer

4730

user_data){

4731

__attribute__((cleanup(cleanup_close)))

4732

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4733

g_assert_cmpint(epoll_fd, >=, 0);

4734

__attribute__((cleanup(string_set_clear)))

4735

string_set cancelled_filenames = {};

4736

const mono_microsecs current_time = 0;

4737

4738

int pipefds[2];

4739

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

4740

4741

/* "sufficient to read at least one event." - inotify(7) */

4742

const size_t ievent_max_size = (sizeof(struct inotify_event)

4743

+ NAME_MAX + 1);

4744

g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);

4745

struct {

4746

struct inotify_event event;

4747

char name_buffer[NAME_MAX + 1];

4748

} ievent_buffer;

4749

struct inotify_event *const ievent = &ievent_buffer.event;

4750

4751

const char dummy_file_name[] = "ignored.dummy_file_name";

4752

ievent->mask = IN_MOVED_FROM;

4753

ievent->len = sizeof(dummy_file_name);

4754

memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));

4755

const size_t ievent_size = (sizeof(struct inotify_event)

4756

+ sizeof(dummy_file_name));

4757

#if defined(__GNUC__) and __GNUC__ >= 11

4758

#pragma GCC diagnostic push

4759

/* ievent is pointing into a struct which is of sufficient size */

4760

#pragma GCC diagnostic ignored "-Wstringop-overread"

4761

#endif

4762

g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),

4763

==, ievent_size);

4764

#if defined(__GNUC__) and __GNUC__ >= 11

4765

#pragma GCC diagnostic pop

4766

#endif

4767

g_assert_cmpint(close(pipefds[1]), ==, 0);

4768

4769

bool quit_now = false;

4770

buffer password = {};

4771

bool mandos_client_exited = false;

4772

bool password_is_read = false;

4773

__attribute__((cleanup(cleanup_queue)))

4774

task_queue *queue = create_queue();

4775

g_assert_nonnull(queue);

4776

4777

task_context task = {

4778

.func=read_inotify_event,

4779

.epoll_fd=epoll_fd,

4780

.fd=pipefds[0],

4781

.quit_now=&quit_now,

4782

.password=&password,

4783

.filename=strdup("/nonexistent"),

4784

.cancelled_filenames=&cancelled_filenames,

4785

.current_time=&current_time,

4786

.mandos_client_exited=&mandos_client_exited,

4787

.password_is_read=&password_is_read,

4788

};

4789

task.func(task, queue);

4790

g_assert_false(quit_now);

4791

g_assert_true(queue->next_run == 0);

4792

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

4793

4794

g_assert_nonnull(find_matching_task(queue, (task_context){

4795

.func=read_inotify_event,

4796

.epoll_fd=epoll_fd,

4797

.fd=pipefds[0],

4798

.quit_now=&quit_now,

4799

.password=&password,

4800

.filename=task.filename,

4801

.cancelled_filenames=&cancelled_filenames,

4802

.current_time=&current_time,

4803

.mandos_client_exited=&mandos_client_exited,

4804

.password_is_read=&password_is_read,

4805

}));

4806

4807

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

4808

EPOLLIN | EPOLLRDHUP));

4809

4810

__attribute__((cleanup(cleanup_string)))

4811

char *filename = NULL;

4812

g_assert_cmpint(asprintf(&filename, "%s/%s", task.filename,

4813

dummy_file_name), >, 0);

4814

g_assert_nonnull(filename);

4815

g_assert_false(string_set_contains(cancelled_filenames, filename));

4816

}

4817

4818

static

4819

void test_read_inotify_event_IN_DELETE_badname(__attribute__((unused))

4820

test_fixture *fixture,

4821

__attribute__((unused))

4822

gconstpointer

4823

user_data){

4824

__attribute__((cleanup(cleanup_close)))

4825

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4826

g_assert_cmpint(epoll_fd, >=, 0);

4827

__attribute__((cleanup(string_set_clear)))

4828

string_set cancelled_filenames = {};

4829

const mono_microsecs current_time = 0;

4830

4831

int pipefds[2];

4832

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

4833

4834

/* "sufficient to read at least one event." - inotify(7) */

4835

const size_t ievent_max_size = (sizeof(struct inotify_event)

4836

+ NAME_MAX + 1);

4837

g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);

4838

struct {

4839

struct inotify_event event;

4840

char name_buffer[NAME_MAX + 1];

4841

} ievent_buffer;

4842

struct inotify_event *const ievent = &ievent_buffer.event;

4843

4844

const char dummy_file_name[] = "ignored.dummy_file_name";

4845

ievent->mask = IN_DELETE;

4846

ievent->len = sizeof(dummy_file_name);

4847

memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));

4848

const size_t ievent_size = (sizeof(struct inotify_event)

4849

+ sizeof(dummy_file_name));

4850

g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),

4851

==, ievent_size);

4852

g_assert_cmpint(close(pipefds[1]), ==, 0);

4853

4854

bool quit_now = false;

4855

buffer password = {};

4856

bool mandos_client_exited = false;

4857

bool password_is_read = false;

4858

__attribute__((cleanup(cleanup_queue)))

4859

task_queue *queue = create_queue();

4860

g_assert_nonnull(queue);

4861

4862

task_context task = {

4863

.func=read_inotify_event,

4864

.epoll_fd=epoll_fd,

4865

.fd=pipefds[0],

4866

.quit_now=&quit_now,

4867

.password=&password,

4868

.filename=strdup("/nonexistent"),

4869

.cancelled_filenames=&cancelled_filenames,

4870

.current_time=&current_time,

4871

.mandos_client_exited=&mandos_client_exited,

4872

.password_is_read=&password_is_read,

4873

};

4874

task.func(task, queue);

4875

g_assert_false(quit_now);

4876

g_assert_true(queue->next_run == 0);

4877

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

4878

4879

g_assert_nonnull(find_matching_task(queue, (task_context){

4880

.func=read_inotify_event,

4881

.epoll_fd=epoll_fd,

4882

.fd=pipefds[0],

4883

.quit_now=&quit_now,

4884

.password=&password,

4885

.filename=task.filename,

4886

.cancelled_filenames=&cancelled_filenames,

4887

.current_time=&current_time,

4888

.mandos_client_exited=&mandos_client_exited,

4889

.password_is_read=&password_is_read,

4890

}));

4891

4892

g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],

4893

EPOLLIN | EPOLLRDHUP));

4894

4895

__attribute__((cleanup(cleanup_string)))

4896

char *filename = NULL;

4897

g_assert_cmpint(asprintf(&filename, "%s/%s", task.filename,

4898

dummy_file_name), >, 0);

4899

g_assert_nonnull(filename);

4900

g_assert_false(string_set_contains(cancelled_filenames, filename));

4901

}

4902

4903

static

4904

void test_open_and_parse_question_ENOENT(__attribute__((unused))

4905

test_fixture *fixture,

4906

__attribute__((unused))

4907

gconstpointer user_data){

4908

__attribute__((cleanup(cleanup_close)))

4909

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4910

g_assert_cmpint(epoll_fd, >=, 0);

4911

__attribute__((cleanup(string_set_clear)))

4912

string_set cancelled_filenames = {};

4913

bool mandos_client_exited = false;

4914

bool password_is_read = false;

4915

__attribute__((cleanup(cleanup_queue)))

4916

task_queue *queue = create_queue();

4917

g_assert_nonnull(queue);

4918

4919

char *const filename = strdup("/nonexistent");

4920

g_assert_nonnull(filename);

4921

task_context task = {

4922

.func=open_and_parse_question,

4923

.question_filename=filename,

4924

.epoll_fd=epoll_fd,

4925

.password=(buffer[]){{}},

4926

.filename=filename,

4927

.cancelled_filenames=&cancelled_filenames,

4928

.current_time=(mono_microsecs[]){0},

4929

.mandos_client_exited=&mandos_client_exited,

4930

.password_is_read=&password_is_read,

4931

};

4932

task.func(task, queue);

4933

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

4934

}

4935

4936

static void test_open_and_parse_question_EIO(__attribute__((unused))

4937

test_fixture *fixture,

4938

__attribute__((unused))

4939

gconstpointer user_data){

4940

__attribute__((cleanup(cleanup_close)))

4941

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4942

g_assert_cmpint(epoll_fd, >=, 0);

4943

__attribute__((cleanup(string_set_clear)))

4944

string_set cancelled_filenames = {};

4945

buffer password = {};

4946

bool mandos_client_exited = false;

4947

bool password_is_read = false;

4948

__attribute__((cleanup(cleanup_queue)))

4949

task_queue *queue = create_queue();

4950

g_assert_nonnull(queue);

4951

const mono_microsecs current_time = 0;

4952

4953

char *filename = strdup("/proc/self/mem");

4954

task_context task = {

4955

.func=open_and_parse_question,

4956

.question_filename=filename,

4957

.epoll_fd=epoll_fd,

4958

.password=&password,

4959

.filename=filename,

4960

.cancelled_filenames=&cancelled_filenames,

4961

.current_time=&current_time,

4962

.mandos_client_exited=&mandos_client_exited,

4963

.password_is_read=&password_is_read,

4964

};

4965

run_task_with_stderr_to_dev_null(task, queue);

4966

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

4967

}

4968

4969

static void

4970

test_open_and_parse_question_parse_error(__attribute__((unused))

4971

test_fixture *fixture,

4972

__attribute__((unused))

4973

gconstpointer user_data){

4974

__attribute__((cleanup(cleanup_close)))

4975

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

4976

g_assert_cmpint(epoll_fd, >=, 0);

4977

__attribute__((cleanup(string_set_clear)))

4978

string_set cancelled_filenames = {};

4979

__attribute__((cleanup(cleanup_queue)))

4980

task_queue *queue = create_queue();

4981

g_assert_nonnull(queue);

4982

4983

__attribute__((cleanup(cleanup_string)))

4984

char *tempfilename = strdup("/tmp/mandosXXXXXX");

4985

g_assert_nonnull(tempfilename);

4986

int tempfile = mkostemp(tempfilename, O_CLOEXEC);

4987

g_assert_cmpint(tempfile, >, 0);

4988

const char bad_data[] = "this is bad syntax\n";

4989

g_assert_cmpint(write(tempfile, bad_data, sizeof(bad_data)),

4990

==, sizeof(bad_data));

4991

g_assert_cmpint(close(tempfile), ==, 0);

4992

4993

char *const filename = strdup(tempfilename);

4994

g_assert_nonnull(filename);

4995

task_context task = {

4996

.func=open_and_parse_question,

4997

.question_filename=filename,

4998

.epoll_fd=epoll_fd,

4999

.password=(buffer[]){{}},

5000

.filename=filename,

5001

.cancelled_filenames=&cancelled_filenames,

5002

.current_time=(mono_microsecs[]){0},

5003

.mandos_client_exited=(bool[]){false},

5004

.password_is_read=(bool[]){false},

5005

};

5006

run_task_with_stderr_to_dev_null(task, queue);

5007

5008

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

5009

5010

g_assert_cmpint(unlink(tempfilename), ==, 0);

5011

}

5012

5013

static

5014

void test_open_and_parse_question_nosocket(__attribute__((unused))

5015

test_fixture *fixture,

5016

__attribute__((unused))

5017

gconstpointer user_data){

5018

__attribute__((cleanup(cleanup_close)))

5019

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5020

g_assert_cmpint(epoll_fd, >=, 0);

5021

__attribute__((cleanup(string_set_clear)))

5022

string_set cancelled_filenames = {};

5023

__attribute__((cleanup(cleanup_queue)))

5024

task_queue *queue = create_queue();

5025

g_assert_nonnull(queue);

5026

5027

__attribute__((cleanup(cleanup_string)))

5028

char *tempfilename = strdup("/tmp/mandosXXXXXX");

5029

g_assert_nonnull(tempfilename);

5030

int questionfile = mkostemp(tempfilename, O_CLOEXEC);

5031

g_assert_cmpint(questionfile, >, 0);

5032

FILE *qf = fdopen(questionfile, "w");

5033

g_assert_cmpint(fprintf(qf, "[Ask]\nPID=1\n"), >, 0);

5034

g_assert_cmpint(fclose(qf), ==, 0);

5035

5036

char *const filename = strdup(tempfilename);

5037

g_assert_nonnull(filename);

5038

task_context task = {

5039

.func=open_and_parse_question,

5040

.question_filename=filename,

5041

.epoll_fd=epoll_fd,

5042

.password=(buffer[]){{}},

5043

.filename=filename,

5044

.cancelled_filenames=&cancelled_filenames,

5045

.current_time=(mono_microsecs[]){0},

5046

.mandos_client_exited=(bool[]){false},

5047

.password_is_read=(bool[]){false},

5048

};

5049

run_task_with_stderr_to_dev_null(task, queue);

5050

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

5051

5052

g_assert_cmpint(unlink(tempfilename), ==, 0);

5053

}

5054

5055

static

5056

void test_open_and_parse_question_badsocket(__attribute__((unused))

5057

test_fixture *fixture,

5058

__attribute__((unused))

5059

gconstpointer user_data){

5060

__attribute__((cleanup(cleanup_close)))

5061

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5062

g_assert_cmpint(epoll_fd, >=, 0);

5063

__attribute__((cleanup(string_set_clear)))

5064

string_set cancelled_filenames = {};

5065

__attribute__((cleanup(cleanup_queue)))

5066

task_queue *queue = create_queue();

5067

g_assert_nonnull(queue);

5068

5069

__attribute__((cleanup(cleanup_string)))

5070

char *tempfilename = strdup("/tmp/mandosXXXXXX");

5071

g_assert_nonnull(tempfilename);

5072

int questionfile = mkostemp(tempfilename, O_CLOEXEC);

5073

g_assert_cmpint(questionfile, >, 0);

5074

FILE *qf = fdopen(questionfile, "w");

5075

g_assert_cmpint(fprintf(qf, "[Ask]\nSocket=\nPID=1\n"), >, 0);

5076

g_assert_cmpint(fclose(qf), ==, 0);

5077

5078

char *const filename = strdup(tempfilename);

5079

g_assert_nonnull(filename);

5080

task_context task = {

5081

.func=open_and_parse_question,

5082

.question_filename=filename,

5083

.epoll_fd=epoll_fd,

5084

.password=(buffer[]){{}},

5085

.filename=filename,

5086

.cancelled_filenames=&cancelled_filenames,

5087

.current_time=(mono_microsecs[]){0},

5088

.mandos_client_exited=(bool[]){false},

5089

.password_is_read=(bool[]){false},

5090

};

5091

run_task_with_stderr_to_dev_null(task, queue);

5092

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

5093

5094

g_assert_cmpint(unlink(tempfilename), ==, 0);

5095

}

5096

5097

static

5098

void test_open_and_parse_question_nopid(__attribute__((unused))

5099

test_fixture *fixture,

5100

__attribute__((unused))

5101

gconstpointer user_data){

5102

__attribute__((cleanup(cleanup_close)))

5103

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5104

g_assert_cmpint(epoll_fd, >=, 0);

5105

__attribute__((cleanup(string_set_clear)))

5106

string_set cancelled_filenames = {};

5107

__attribute__((cleanup(cleanup_queue)))

5108

task_queue *queue = create_queue();

5109

g_assert_nonnull(queue);

5110

5111

__attribute__((cleanup(cleanup_string)))

5112

char *tempfilename = strdup("/tmp/mandosXXXXXX");

5113

g_assert_nonnull(tempfilename);

5114

int questionfile = mkostemp(tempfilename, O_CLOEXEC);

5115

g_assert_cmpint(questionfile, >, 0);

5116

FILE *qf = fdopen(questionfile, "w");

5117

g_assert_cmpint(fprintf(qf, "[Ask]\nSocket=/nonexistent\n"), >, 0);

5118

g_assert_cmpint(fclose(qf), ==, 0);

5119

5120

char *const filename = strdup(tempfilename);

5121

g_assert_nonnull(filename);

5122

task_context task = {

5123

.func=open_and_parse_question,

5124

.question_filename=filename,

5125

.epoll_fd=epoll_fd,

5126

.password=(buffer[]){{}},

5127

.filename=filename,

5128

.cancelled_filenames=&cancelled_filenames,

5129

.current_time=(mono_microsecs[]){0},

5130

.mandos_client_exited=(bool[]){false},

5131

.password_is_read=(bool[]){false},

5132

};

5133

run_task_with_stderr_to_dev_null(task, queue);

5134

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

5135

5136

g_assert_cmpint(unlink(tempfilename), ==, 0);

5137

}

5138

5139

static

5140

void test_open_and_parse_question_badpid(__attribute__((unused))

5141

test_fixture *fixture,

5142

__attribute__((unused))

5143

gconstpointer user_data){

5144

__attribute__((cleanup(cleanup_close)))

5145

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5146

g_assert_cmpint(epoll_fd, >=, 0);

5147

__attribute__((cleanup(string_set_clear)))

5148

string_set cancelled_filenames = {};

5149

__attribute__((cleanup(cleanup_queue)))

5150

task_queue *queue = create_queue();

5151

g_assert_nonnull(queue);

5152

5153

__attribute__((cleanup(cleanup_string)))

5154

char *tempfilename = strdup("/tmp/mandosXXXXXX");

5155

g_assert_nonnull(tempfilename);

5156

int questionfile = mkostemp(tempfilename, O_CLOEXEC);

5157

g_assert_cmpint(questionfile, >, 0);

5158

FILE *qf = fdopen(questionfile, "w");

5159

g_assert_cmpint(fprintf(qf, "[Ask]\nSocket=/nonexistent\nPID=\n"),

5160

>, 0);

5161

g_assert_cmpint(fclose(qf), ==, 0);

5162

5163

char *const filename = strdup(tempfilename);

5164

g_assert_nonnull(filename);

5165

task_context task = {

5166

.func=open_and_parse_question,

5167

.question_filename=filename,

5168

.epoll_fd=epoll_fd,

5169

.password=(buffer[]){{}},

5170

.filename=filename,

5171

.cancelled_filenames=&cancelled_filenames,

5172

.current_time=(mono_microsecs[]){0},

5173

.mandos_client_exited=(bool[]){false},

5174

.password_is_read=(bool[]){false},

5175

};

5176

run_task_with_stderr_to_dev_null(task, queue);

5177

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

5178

5179

g_assert_cmpint(unlink(tempfilename), ==, 0);

5180

}

5181

5182

static void

5183

test_open_and_parse_question_noexist_pid(__attribute__((unused))

5184

test_fixture *fixture,

5185

__attribute__((unused))

5186

gconstpointer user_data){

5187

__attribute__((cleanup(cleanup_close)))

5188

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5189

g_assert_cmpint(epoll_fd, >=, 0);

5190

__attribute__((cleanup(string_set_clear)))

5191

string_set cancelled_filenames = {};

5192

buffer password = {};

5193

bool mandos_client_exited = false;

5194

bool password_is_read = false;

5195

__attribute__((cleanup(cleanup_queue)))

5196

task_queue *queue = create_queue();

5197

g_assert_nonnull(queue);

5198

const mono_microsecs current_time = 0;

5199

5200

/* Find value of sysctl kernel.pid_max */

5201

uintmax_t pid_max = 0;

5202

FILE *sysctl_pid_max = fopen("/proc/sys/kernel/pid_max", "r");

5203

g_assert_nonnull(sysctl_pid_max);

5204

g_assert_cmpint(fscanf(sysctl_pid_max, "%" PRIuMAX, &pid_max),

5205

==, 1);

5206

g_assert_cmpint(fclose(sysctl_pid_max), ==, 0);

5207

5208

pid_t nonexisting_pid = ((pid_t)pid_max)+1;

5209

g_assert_true(nonexisting_pid > 0); /* Overflow check */

5210

5211

__attribute__((cleanup(cleanup_string)))

5212

char *tempfilename = strdup("/tmp/mandosXXXXXX");

5213

g_assert_nonnull(tempfilename);

5214

int questionfile = mkostemp(tempfilename, O_CLOEXEC);

5215

g_assert_cmpint(questionfile, >, 0);

5216

FILE *qf = fdopen(questionfile, "w");

5217

g_assert_cmpint(fprintf(qf, "[Ask]\nSocket=/nonexistent\nPID=%"

5218

PRIuMAX"\n", (uintmax_t)nonexisting_pid),

5219

>, 0);

5220

g_assert_cmpint(fclose(qf), ==, 0);

5221

5222

char *const question_filename = strdup(tempfilename);

5223

g_assert_nonnull(question_filename);

5224

task_context task = {

5225

.func=open_and_parse_question,

5226

.question_filename=question_filename,

5227

.epoll_fd=epoll_fd,

5228

.password=&password,

5229

.filename=question_filename,

5230

.cancelled_filenames=&cancelled_filenames,

5231

.current_time=&current_time,

5232

.mandos_client_exited=&mandos_client_exited,

5233

.password_is_read=&password_is_read,

5234

};

5235

run_task_with_stderr_to_dev_null(task, queue);

5236

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

5237

5238

g_assert_cmpint(unlink(tempfilename), ==, 0);

5239

}

5240

5241

static void

5242

test_open_and_parse_question_no_notafter(__attribute__((unused))

5243

test_fixture *fixture,

5244

__attribute__((unused))

5245

gconstpointer user_data){

5246

__attribute__((cleanup(cleanup_close)))

5247

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5248

g_assert_cmpint(epoll_fd, >=, 0);

5249

__attribute__((cleanup(string_set_clear)))

5250

string_set cancelled_filenames = {};

5251

buffer password = {};

5252

bool mandos_client_exited = false;

5253

bool password_is_read = false;

5254

__attribute__((cleanup(cleanup_queue)))

5255

task_queue *queue = create_queue();

5256

g_assert_nonnull(queue);

5257

const mono_microsecs current_time = 0;

5258

5259

__attribute__((cleanup(cleanup_string)))

5260

char *tempfilename = strdup("/tmp/mandosXXXXXX");

5261

g_assert_nonnull(tempfilename);

5262

int questionfile = mkostemp(tempfilename, O_CLOEXEC);

5263

g_assert_cmpint(questionfile, >, 0);

5264

FILE *qf = fdopen(questionfile, "w");

5265

g_assert_cmpint(fprintf(qf, "[Ask]\nSocket=/nonexistent\nPID=%"

5266

PRIuMAX "\n", (uintmax_t)getpid()), >, 0);

5267

g_assert_cmpint(fclose(qf), ==, 0);

5268

5269

char *const filename = strdup(tempfilename);

5270

g_assert_nonnull(filename);

5271

task_context task = {

5272

.func=open_and_parse_question,

5273

.question_filename=filename,

5274

.epoll_fd=epoll_fd,

5275

.password=&password,

5276

.filename=filename,

5277

.cancelled_filenames=&cancelled_filenames,

5278

.current_time=&current_time,

5279

.mandos_client_exited=&mandos_client_exited,

5280

.password_is_read=&password_is_read,

5281

};

5282

task.func(task, queue);

5283

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

5284

5285

__attribute__((cleanup(cleanup_string)))

5286

char *socket_filename = strdup("/nonexistent");

5287

g_assert_nonnull(socket_filename);

5288

g_assert_nonnull(find_matching_task(queue, (task_context){

5289

.func=connect_question_socket,

5290

.question_filename=tempfilename,

5291

.filename=socket_filename,

5292

.epoll_fd=epoll_fd,

5293

.password=&password,

5294

.current_time=&current_time,

5295

.mandos_client_exited=&mandos_client_exited,

5296

.password_is_read=&password_is_read,

5297

}));

5298

5299

g_assert_true(queue->next_run != 0);

5300

5301

g_assert_cmpint(unlink(tempfilename), ==, 0);

5302

}

5303

5304

static void

5305

test_open_and_parse_question_bad_notafter(__attribute__((unused))

5306

test_fixture *fixture,

5307

__attribute__((unused))

5308

gconstpointer user_data){

5309

__attribute__((cleanup(cleanup_close)))

5310

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5311

g_assert_cmpint(epoll_fd, >=, 0);

5312

__attribute__((cleanup(string_set_clear)))

5313

string_set cancelled_filenames = {};

5314

buffer password = {};

5315

bool mandos_client_exited = false;

5316

bool password_is_read = false;

5317

__attribute__((cleanup(cleanup_queue)))

5318

task_queue *queue = create_queue();

5319

g_assert_nonnull(queue);

5320

const mono_microsecs current_time = 0;

5321

5322

__attribute__((cleanup(cleanup_string)))

5323

char *tempfilename = strdup("/tmp/mandosXXXXXX");

5324

g_assert_nonnull(tempfilename);

5325

int questionfile = mkostemp(tempfilename, O_CLOEXEC);

5326

g_assert_cmpint(questionfile, >, 0);

5327

FILE *qf = fdopen(questionfile, "w");

5328

g_assert_cmpint(fprintf(qf, "[Ask]\nSocket=/nonexistent\nPID=%"

5329

PRIuMAX "\nNotAfter=\n",

5330

(uintmax_t)getpid()), >, 0);

5331

g_assert_cmpint(fclose(qf), ==, 0);

5332

5333

char *const filename = strdup(tempfilename);

5334

g_assert_nonnull(filename);

5335

task_context task = {

5336

.func=open_and_parse_question,

5337

.question_filename=filename,

5338

.epoll_fd=epoll_fd,

5339

.password=&password,

5340

.filename=filename,

5341

.cancelled_filenames=&cancelled_filenames,

5342

.current_time=&current_time,

5343

.mandos_client_exited=&mandos_client_exited,

5344

.password_is_read=&password_is_read,

5345

};

5346

run_task_with_stderr_to_dev_null(task, queue);

5347

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

5348

5349

__attribute__((cleanup(cleanup_string)))

5350

char *socket_filename = strdup("/nonexistent");

5351

g_assert_nonnull(find_matching_task(queue, (task_context){

5352

.func=connect_question_socket,

5353

.question_filename=tempfilename,

5354

.filename=socket_filename,

5355

.epoll_fd=epoll_fd,

5356

.password=&password,

5357

.current_time=&current_time,

5358

.mandos_client_exited=&mandos_client_exited,

5359

.password_is_read=&password_is_read,

5360

}));

5361

g_assert_true(queue->next_run != 0);

5362

5363

g_assert_cmpint(unlink(tempfilename), ==, 0);

5364

}

5365

5366

static

5367

void assert_open_and_parse_question_with_notafter(const mono_microsecs

5368

current_time,

5369

const mono_microsecs

5370

notafter,

5371

const mono_microsecs

5372

next_queue_run){

5373

__attribute__((cleanup(cleanup_close)))

5374

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5375

g_assert_cmpint(epoll_fd, >=, 0);

5376

__attribute__((cleanup(string_set_clear)))

5377

string_set cancelled_filenames = {};

5378

buffer password = {};

5379

bool mandos_client_exited = false;

5380

bool password_is_read = false;

5381

__attribute__((cleanup(cleanup_queue)))

5382

task_queue *queue = create_queue();

5383

g_assert_nonnull(queue);

5384

queue->next_run = next_queue_run;

5385

5386

__attribute__((cleanup(cleanup_string)))

5387

char *tempfilename = strdup("/tmp/mandosXXXXXX");

5388

g_assert_nonnull(tempfilename);

5389

int questionfile = mkostemp(tempfilename, O_CLOEXEC);

5390

g_assert_cmpint(questionfile, >, 0);

5391

FILE *qf = fdopen(questionfile, "w");

5392

g_assert_cmpint(fprintf(qf, "[Ask]\nSocket=/nonexistent\nPID=%"

5393

PRIuMAX "\nNotAfter=%" PRIuMAX "\n",

5394

(uintmax_t)getpid(), notafter), >, 0);

5395

g_assert_cmpint(fclose(qf), ==, 0);

5396

5397

char *const filename = strdup(tempfilename);

5398

g_assert_nonnull(filename);

5399

task_context task = {

5400

.func=open_and_parse_question,

5401

.question_filename=filename,

5402

.epoll_fd=epoll_fd,

5403

.password=&password,

5404

.filename=filename,

5405

.cancelled_filenames=&cancelled_filenames,

5406

.current_time=&current_time,

5407

.mandos_client_exited=&mandos_client_exited,

5408

.password_is_read=&password_is_read,

5409

};

5410

task.func(task, queue);

5411

5412

if(queue->length >= 1){

5413

__attribute__((cleanup(cleanup_string)))

5414

char *socket_filename = strdup("/nonexistent");

5415

g_assert_nonnull(find_matching_task(queue, (task_context){

5416

.func=connect_question_socket,

5417

.filename=socket_filename,

5418

.epoll_fd=epoll_fd,

5419

.password=&password,

5420

.current_time=&current_time,

5421

.cancelled_filenames=&cancelled_filenames,

5422

.mandos_client_exited=&mandos_client_exited,

5423

.password_is_read=&password_is_read,

5424

}));

5425

g_assert_true(queue->next_run != 0);

5426

}

5427

5428

if(notafter == 0){

5429

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

5430

} else if(current_time >= notafter) {

5431

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

5432

} else {

5433

g_assert_nonnull(find_matching_task(queue, (task_context){

5434

.func=cancel_old_question,

5435

.question_filename=tempfilename,

5436

.filename=tempfilename,

5437

.notafter=notafter,

5438

.cancelled_filenames=&cancelled_filenames,

5439

.current_time=&current_time,

5440

}));

5441

}

5442

g_assert_true(queue->next_run == 1);

5443

5444

g_assert_cmpint(unlink(tempfilename), ==, 0);

5445

}

5446

5447

static void

5448

test_open_and_parse_question_notafter_0(__attribute__((unused))

5449

test_fixture *fixture,

5450

__attribute__((unused))

5451

gconstpointer user_data){

5452

/* current_time, notafter, next_queue_run */

5453

assert_open_and_parse_question_with_notafter(0, 0, 0);

5454

}

5455

5456

static void

5457

test_open_and_parse_question_notafter_1(__attribute__((unused))

5458

test_fixture *fixture,

5459

__attribute__((unused))

5460

gconstpointer user_data){

5461

/* current_time, notafter, next_queue_run */

5462

assert_open_and_parse_question_with_notafter(0, 1, 0);

5463

}

5464

5465

static void

5466

test_open_and_parse_question_notafter_1_1(__attribute__((unused))

5467

test_fixture *fixture,

5468

__attribute__((unused))

5469

gconstpointer user_data){

5470

/* current_time, notafter, next_queue_run */

5471

assert_open_and_parse_question_with_notafter(0, 1, 1);

5472

}

5473

5474

static void

5475

test_open_and_parse_question_notafter_1_2(__attribute__((unused))

5476

test_fixture *fixture,

5477

__attribute__((unused))

5478

gconstpointer user_data){

5479

/* current_time, notafter, next_queue_run */

5480

assert_open_and_parse_question_with_notafter(0, 1, 2);

5481

}

5482

5483

static void

5484

test_open_and_parse_question_equal_notafter(__attribute__((unused))

5485

test_fixture *fixture,

5486

__attribute__((unused))

5487

gconstpointer user_data){

5488

/* current_time, notafter, next_queue_run */

5489

assert_open_and_parse_question_with_notafter(1, 1, 0);

5490

}

5491

5492

static void

5493

test_open_and_parse_question_late_notafter(__attribute__((unused))

5494

test_fixture *fixture,

5495

__attribute__((unused))

5496

gconstpointer user_data){

5497

/* current_time, notafter, next_queue_run */

5498

assert_open_and_parse_question_with_notafter(2, 1, 0);

5499

}

5500

5501

static void assert_cancel_old_question_param(const mono_microsecs

5502

next_queue_run,

5503

const mono_microsecs

5504

notafter,

5505

const mono_microsecs

5506

current_time,

5507

const mono_microsecs

5508

next_set_to){

5509

__attribute__((cleanup(string_set_clear)))

5510

string_set cancelled_filenames = {};

5511

__attribute__((cleanup(cleanup_queue)))

5512

task_queue *queue = create_queue();

5513

g_assert_nonnull(queue);

5514

queue->next_run = next_queue_run;

5515

5516

char *const question_filename = strdup("/nonexistent");

5517

g_assert_nonnull(question_filename);

5518

task_context task = {

5519

.func=cancel_old_question,

5520

.question_filename=question_filename,

5521

.filename=question_filename,

5522

.notafter=notafter,

5523

.cancelled_filenames=&cancelled_filenames,

5524

.current_time=&current_time,

5525

};

5526

task.func(task, queue);

5527

5528

if(current_time >= notafter){

5529

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

5530

g_assert_true(string_set_contains(cancelled_filenames,

5531

"/nonexistent"));

5532

} else {

5533

g_assert_nonnull(find_matching_task(queue, (task_context){

5534

.func=cancel_old_question,

5535

.question_filename=question_filename,

5536

.filename=question_filename,

5537

.notafter=notafter,

5538

.cancelled_filenames=&cancelled_filenames,

5539

.current_time=&current_time,

5540

}));

5541

5542

g_assert_false(string_set_contains(cancelled_filenames,

5543

question_filename));

5544

}

5545

g_assert_cmpuint((unsigned int)queue->next_run, ==,

5546

(unsigned int)next_set_to);

5547

}

5548

5549

static void test_cancel_old_question_0_1_2(__attribute__((unused))

5550

test_fixture *fixture,

5551

__attribute__((unused))

5552

gconstpointer user_data){

5553

/* next_queue_run unset,

5554

cancellation should happen because time has come,

5555

next_queue_run should be unchanged */

5556

/* next_queue_run, notafter, current_time, next_set_to */

5557

assert_cancel_old_question_param(0, 1, 2, 0);

5558

}

5559

5560

static void test_cancel_old_question_0_2_1(__attribute__((unused))

5561

test_fixture *fixture,

5562

__attribute__((unused))

5563

gconstpointer user_data){

5564

/* If next_queue_run is 0, meaning unset, and notafter is 2,

5565

and current_time is not yet notafter or greater,

5566

update value of next_queue_run to value of notafter */

5567

/* next_queue_run, notafter, current_time, next_set_to */

5568

assert_cancel_old_question_param(0, 2, 1, 2);

5569

}

5570

5571

static void test_cancel_old_question_1_2_3(__attribute__((unused))

5572

test_fixture *fixture,

5573

__attribute__((unused))

5574

gconstpointer user_data){

5575

/* next_queue_run 1,

5576

cancellation should happen because time has come,

5577

next_queue_run should be unchanged */

5578

/* next_queue_run, notafter, current_time, next_set_to */

5579

assert_cancel_old_question_param(1, 2, 3, 1);

5580

}

5581

5582

static void test_cancel_old_question_1_3_2(__attribute__((unused))

5583

test_fixture *fixture,

5584

__attribute__((unused))

5585

gconstpointer user_data){

5586

/* If next_queue_run is set,

5587

and current_time is not yet notafter or greater,

5588

and notafter is larger than next_queue_run

5589

next_queue_run should be unchanged */

5590

/* next_queue_run, notafter, current_time, next_set_to */

5591

assert_cancel_old_question_param(1, 3, 2, 1);

5592

}

5593

5594

static void test_cancel_old_question_2_1_3(__attribute__((unused))

5595

test_fixture *fixture,

5596

__attribute__((unused))

5597

gconstpointer user_data){

5598

/* next_queue_run 2,

5599

cancellation should happen because time has come,

5600

next_queue_run should be unchanged */

5601

/* next_queue_run, notafter, current_time, next_set_to */

5602

assert_cancel_old_question_param(2, 1, 3, 2);

5603

}

5604

5605

static void test_cancel_old_question_2_3_1(__attribute__((unused))

5606

test_fixture *fixture,

5607

__attribute__((unused))

5608

gconstpointer user_data){

5609

/* If next_queue_run is set,

5610

and current_time is not yet notafter or greater,

5611

and notafter is larger than next_queue_run

5612

next_queue_run should be unchanged */

5613

/* next_queue_run, notafter, current_time, next_set_to */

5614

assert_cancel_old_question_param(2, 3, 1, 2);

5615

}

5616

5617

static void test_cancel_old_question_3_1_2(__attribute__((unused))

5618

test_fixture *fixture,

5619

__attribute__((unused))

5620

gconstpointer user_data){

5621

/* next_queue_run 3,

5622

cancellation should happen because time has come,

5623

next_queue_run should be unchanged */

5624

/* next_queue_run, notafter, current_time, next_set_to */

5625

assert_cancel_old_question_param(3, 1, 2, 3);

5626

}

5627

5628

static void test_cancel_old_question_3_2_1(__attribute__((unused))

5629

test_fixture *fixture,

5630

__attribute__((unused))

5631

gconstpointer user_data){

5632

/* If next_queue_run is set,

5633

and current_time is not yet notafter or greater,

5634

and notafter is smaller than next_queue_run

5635

update value of next_queue_run to value of notafter */

5636

/* next_queue_run, notafter, current_time, next_set_to */

5637

assert_cancel_old_question_param(3, 2, 1, 2);

5638

}

5639

5640

static void

5641

test_connect_question_socket_name_too_long(__attribute__((unused))

5642

test_fixture *fixture,

5643

__attribute__((unused))

5644

gconstpointer user_data){

5645

__attribute__((cleanup(cleanup_close)))

5646

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5647

g_assert_cmpint(epoll_fd, >=, 0);

5648

const char question_filename[] = "/nonexistent/question";

5649

__attribute__((cleanup(string_set_clear)))

5650

string_set cancelled_filenames = {};

5651

__attribute__((cleanup(cleanup_queue)))

5652

task_queue *queue = create_queue();

5653

g_assert_nonnull(queue);

5654

__attribute__((cleanup(cleanup_string)))

5655

char *tempdir = make_temporary_directory();

5656

g_assert_nonnull(tempdir);

5657

struct sockaddr_un unix_socket = { .sun_family=AF_LOCAL };

5658

char socket_name[sizeof(unix_socket.sun_path)];

5659

memset(socket_name, 'x', sizeof(socket_name));

5660

socket_name[sizeof(socket_name)-1] = '\0';

5661

char *filename = NULL;

5662

g_assert_cmpint(asprintf(&filename, "%s/%s", tempdir, socket_name),

5663

>, 0);

5664

g_assert_nonnull(filename);

5665

5666

task_context task = {

5667

.func=connect_question_socket,

5668

.question_filename=strdup(question_filename),

5669

.epoll_fd=epoll_fd,

5670

.password=(buffer[]){{}},

5671

.filename=filename,

5672

.cancelled_filenames=&cancelled_filenames,

5673

.mandos_client_exited=(bool[]){false},

5674

.password_is_read=(bool[]){false},

5675

.current_time=(mono_microsecs[]){0},

5676

};

5677

g_assert_nonnull(task.question_filename);

5678

run_task_with_stderr_to_dev_null(task, queue);

5679

5680

g_assert_true(string_set_contains(cancelled_filenames,

5681

question_filename));

5682

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

5683

g_assert_true(queue->next_run == 0);

5684

5685

g_assert_cmpint(rmdir(tempdir), ==, 0);

5686

}

5687

5688

static

5689

void test_connect_question_socket_connect_fail(__attribute__((unused))

5690

test_fixture *fixture,

5691

__attribute__((unused))

5692

gconstpointer

5693

user_data){

5694

__attribute__((cleanup(cleanup_close)))

5695

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5696

g_assert_cmpint(epoll_fd, >=, 0);

5697

const char question_filename[] = "/nonexistent/question";

5698

__attribute__((cleanup(string_set_clear)))

5699

string_set cancelled_filenames = {};

5700

const mono_microsecs current_time = 3;

5701

__attribute__((cleanup(cleanup_queue)))

5702

task_queue *queue = create_queue();

5703

g_assert_nonnull(queue);

5704

__attribute__((cleanup(cleanup_string)))

5705

char *tempdir = make_temporary_directory();

5706

g_assert_nonnull(tempdir);

5707

char socket_name[] = "nonexistent";

5708

char *filename = NULL;

5709

g_assert_cmpint(asprintf(&filename, "%s/%s", tempdir, socket_name),

5710

>, 0);

5711

g_assert_nonnull(filename);

5712

5713

task_context task = {

5714

.func=connect_question_socket,

5715

.question_filename=strdup(question_filename),

5716

.epoll_fd=epoll_fd,

5717

.password=(buffer[]){{}},

5718

.filename=filename,

5719

.cancelled_filenames=&cancelled_filenames,

5720

.mandos_client_exited=(bool[]){false},

5721

.password_is_read=(bool[]){false},

5722

.current_time=&current_time,

5723

};

5724

g_assert_nonnull(task.question_filename);

5725

run_task_with_stderr_to_dev_null(task, queue);

5726

5727

g_assert_nonnull(find_matching_task(queue, task));

5728

5729

g_assert_false(string_set_contains(cancelled_filenames,

5730

question_filename));

5731

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

5732

g_assert_true(queue->next_run == 1000000 + current_time);

5733

5734

g_assert_cmpint(rmdir(tempdir), ==, 0);

5735

}

5736

5737

static

5738

void test_connect_question_socket_bad_epoll(__attribute__((unused))

5739

test_fixture *fixture,

5740

__attribute__((unused))

5741

gconstpointer user_data){

5742

__attribute__((cleanup(cleanup_close)))

5743

const int epoll_fd = open("/dev/null",

5744

O_WRONLY | O_CLOEXEC | O_NOCTTY);

5745

__attribute__((cleanup(cleanup_string)))

5746

char *const question_filename = strdup("/nonexistent/question");

5747

g_assert_nonnull(question_filename);

5748

__attribute__((cleanup(string_set_clear)))

5749

string_set cancelled_filenames = {};

5750

const mono_microsecs current_time = 5;

5751

__attribute__((cleanup(cleanup_queue)))

5752

task_queue *queue = create_queue();

5753

g_assert_nonnull(queue);

5754

__attribute__((cleanup(cleanup_string)))

5755

char *tempdir = make_temporary_directory();

5756

g_assert_nonnull(tempdir);

5757

__attribute__((cleanup(cleanup_close)))

5758

const int sock_fd = socket(PF_LOCAL, SOCK_DGRAM

5759

| SOCK_NONBLOCK | SOCK_CLOEXEC, 0);

5760

g_assert_cmpint(sock_fd, >=, 0);

5761

struct sockaddr_un sock_name = { .sun_family=AF_LOCAL };

5762

const char socket_name[] = "socket_name";

5763

__attribute__((cleanup(cleanup_string)))

5764

char *filename = NULL;

5765

g_assert_cmpint(asprintf(&filename, "%s/%s", tempdir, socket_name),

5766

>, 0);

5767

g_assert_nonnull(filename);

5768

g_assert_cmpint((int)strlen(filename), <,

5769

(int)sizeof(sock_name.sun_path));

5770

strncpy(sock_name.sun_path, filename, sizeof(sock_name.sun_path));

5771

sock_name.sun_path[sizeof(sock_name.sun_path)-1] = '\0';

5772

g_assert_cmpint((int)bind(sock_fd, (struct sockaddr *)&sock_name,

5773

(socklen_t)SUN_LEN(&sock_name)), >=, 0);

5774

task_context task = {

5775

.func=connect_question_socket,

5776

.question_filename=strdup(question_filename),

5777

.epoll_fd=epoll_fd,

5778

.password=(buffer[]){{}},

5779

.filename=strdup(filename),

5780

.cancelled_filenames=&cancelled_filenames,

5781

.mandos_client_exited=(bool[]){false},

5782

.password_is_read=(bool[]){false},

5783

.current_time=&current_time,

5784

};

5785

g_assert_nonnull(task.question_filename);

5786

run_task_with_stderr_to_dev_null(task, queue);

5787

5788

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

5789

const task_context *const added_task

5790

= find_matching_task(queue, task);

5791

g_assert_nonnull(added_task);

5792

g_assert_true(queue->next_run == 1000000 + current_time);

5793

5794

g_assert_cmpint(unlink(filename), ==, 0);

5795

g_assert_cmpint(rmdir(tempdir), ==, 0);

5796

}

5797

5798

static

5799

void test_connect_question_socket_usable(__attribute__((unused))

5800

test_fixture *fixture,

5801

__attribute__((unused))

5802

gconstpointer user_data){

5803

__attribute__((cleanup(cleanup_close)))

5804

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5805

g_assert_cmpint(epoll_fd, >=, 0);

5806

__attribute__((cleanup(cleanup_string)))

5807

char *const question_filename = strdup("/nonexistent/question");

5808

g_assert_nonnull(question_filename);

5809

__attribute__((cleanup(string_set_clear)))

5810

string_set cancelled_filenames = {};

5811

buffer password = {};

5812

bool mandos_client_exited = false;

5813

bool password_is_read = false;

5814

const mono_microsecs current_time = 0;

5815

__attribute__((cleanup(cleanup_queue)))

5816

task_queue *queue = create_queue();

5817

g_assert_nonnull(queue);

5818

__attribute__((cleanup(cleanup_string)))

5819

char *tempdir = make_temporary_directory();

5820

g_assert_nonnull(tempdir);

5821

__attribute__((cleanup(cleanup_close)))

5822

const int sock_fd = socket(PF_LOCAL, SOCK_DGRAM

5823

| SOCK_NONBLOCK | SOCK_CLOEXEC, 0);

5824

g_assert_cmpint(sock_fd, >=, 0);

5825

struct sockaddr_un sock_name = { .sun_family=AF_LOCAL };

5826

const char socket_name[] = "socket_name";

5827

__attribute__((cleanup(cleanup_string)))

5828

char *filename = NULL;

5829

g_assert_cmpint(asprintf(&filename, "%s/%s", tempdir, socket_name),

5830

>, 0);

5831

g_assert_nonnull(filename);

5832

g_assert_cmpint((int)strlen(filename), <,

5833

(int)sizeof(sock_name.sun_path));

5834

strncpy(sock_name.sun_path, filename, sizeof(sock_name.sun_path));

5835

sock_name.sun_path[sizeof(sock_name.sun_path)-1] = '\0';

5836

g_assert_cmpint((int)bind(sock_fd, (struct sockaddr *)&sock_name,

5837

(socklen_t)SUN_LEN(&sock_name)), >=, 0);

5838

task_context task = {

5839

.func=connect_question_socket,

5840

.question_filename=strdup(question_filename),

5841

.epoll_fd=epoll_fd,

5842

.password=&password,

5843

.filename=strdup(filename),

5844

.cancelled_filenames=&cancelled_filenames,

5845

.mandos_client_exited=&mandos_client_exited,

5846

.password_is_read=&password_is_read,

5847

.current_time=&current_time,

5848

};

5849

g_assert_nonnull(task.question_filename);

5850

task.func(task, queue);

5851

5852

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

5853

const task_context *const added_task

5854

= find_matching_task(queue, (task_context){

5855

.func=send_password_to_socket,

5856

.question_filename=question_filename,

5857

.filename=filename,

5858

.epoll_fd=epoll_fd,

5859

.password=&password,

5860

.cancelled_filenames=&cancelled_filenames,

5861

.mandos_client_exited=&mandos_client_exited,

5862

.password_is_read=&password_is_read,

5863

.current_time=&current_time,

5864

});

5865

g_assert_nonnull(added_task);

5866

g_assert_cmpint(added_task->fd, >, 0);

5867

5868

g_assert_true(epoll_set_contains(epoll_fd, added_task->fd,

5869

EPOLLOUT));

5870

5871

const int fd = added_task->fd;

5872

g_assert_cmpint(fd, >, 0);

5873

g_assert_true(fd_has_cloexec_and_nonblock(fd));

5874

5875

/* write to fd */

5876

char write_data[PIPE_BUF];

5877

{

5878

/* Construct test password buffer */

5879

/* Start with + since that is what the real protocol uses */

5880

write_data[0] = '+';

5881

/* Set a special character at string end just to mark the end */

5882

write_data[sizeof(write_data)-2] = 'y';

5883

/* Set NUL at buffer end, as suggested by the protocol */

5884

write_data[sizeof(write_data)-1] = '\0';

5885

/* Fill rest of password with 'x' */

5886

memset(write_data+1, 'x', sizeof(write_data)-3);

5887

g_assert_cmpint((int)send(fd, write_data, sizeof(write_data),

5888

MSG_NOSIGNAL), ==, sizeof(write_data));

5889

}

5890

5891

/* read from sock_fd */

5892

char read_data[sizeof(write_data)];

5893

g_assert_cmpint((int)read(sock_fd, read_data, sizeof(read_data)),

5894

==, sizeof(read_data));

5895

5896

g_assert_true(memcmp(write_data, read_data, sizeof(write_data))

5897

== 0);

5898

5899

/* writing to sock_fd should fail */

5900

g_assert_cmpint(send(sock_fd, write_data, sizeof(write_data),

5901

MSG_NOSIGNAL), <, 0);

5902

5903

/* reading from fd should fail */

5904

g_assert_cmpint((int)recv(fd, read_data, sizeof(read_data),

5905

MSG_NOSIGNAL), <, 0);

5906

5907

g_assert_cmpint(unlink(filename), ==, 0);

5908

g_assert_cmpint(rmdir(tempdir), ==, 0);

5909

}

5910

5911

static void

5912

test_send_password_to_socket_client_not_exited(__attribute__((unused))

5913

test_fixture *fixture,

5914

__attribute__((unused))

5915

gconstpointer

5916

user_data){

5917

__attribute__((cleanup(cleanup_close)))

5918

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5919

g_assert_cmpint(epoll_fd, >=, 0);

5920

__attribute__((cleanup(cleanup_string)))

5921

char *const question_filename = strdup("/nonexistent/question");

5922

g_assert_nonnull(question_filename);

5923

__attribute__((cleanup(cleanup_string)))

5924

char *const filename = strdup("/nonexistent/socket");

5925

g_assert_nonnull(filename);

5926

__attribute__((cleanup(string_set_clear)))

5927

string_set cancelled_filenames = {};

5928

buffer password = {};

5929

bool password_is_read = true;

5930

__attribute__((cleanup(cleanup_queue)))

5931

task_queue *queue = create_queue();

5932

g_assert_nonnull(queue);

5933

int socketfds[2];

5934

g_assert_cmpint(socketpair(PF_LOCAL, SOCK_DGRAM

5935

| SOCK_NONBLOCK | SOCK_CLOEXEC, 0,

5936

socketfds), ==, 0);

5937

__attribute__((cleanup(cleanup_close)))

5938

const int read_socket = socketfds[0];

5939

const int write_socket = socketfds[1];

5940

task_context task = {

5941

.func=send_password_to_socket,

5942

.question_filename=strdup(question_filename),

5943

.filename=strdup(filename),

5944

.epoll_fd=epoll_fd,

5945

.fd=write_socket,

5946

.password=&password,

5947

.cancelled_filenames=&cancelled_filenames,

5948

.mandos_client_exited=(bool[]){false},

5949

.password_is_read=&password_is_read,

5950

.current_time=(mono_microsecs[]){0},

5951

};

5952

g_assert_nonnull(task.question_filename);

5953

5954

task.func(task, queue);

5955

5956

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

5957

5958

const task_context *const added_task

5959

= find_matching_task(queue, task);

5960

g_assert_nonnull(added_task);

5961

g_assert_cmpuint((unsigned int)password.length, ==, 0);

5962

g_assert_true(password_is_read);

5963

5964

g_assert_cmpint(added_task->fd, >, 0);

5965

g_assert_true(epoll_set_contains(epoll_fd, added_task->fd,

5966

EPOLLOUT));

5967

}

5968

5969

static void

5970

test_send_password_to_socket_password_not_read(__attribute__((unused))

5971

test_fixture *fixture,

5972

__attribute__((unused))

5973

gconstpointer

5974

user_data){

5975

__attribute__((cleanup(cleanup_close)))

5976

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

5977

g_assert_cmpint(epoll_fd, >=, 0);

5978

__attribute__((cleanup(cleanup_string)))

5979

char *const question_filename = strdup("/nonexistent/question");

5980

g_assert_nonnull(question_filename);

5981

__attribute__((cleanup(cleanup_string)))

5982

char *const filename = strdup("/nonexistent/socket");

5983

__attribute__((cleanup(string_set_clear)))

5984

string_set cancelled_filenames = {};

5985

buffer password = {};

5986

__attribute__((cleanup(cleanup_queue)))

5987

task_queue *queue = create_queue();

5988

g_assert_nonnull(queue);

5989

int socketfds[2];

5990

g_assert_cmpint(socketpair(PF_LOCAL, SOCK_DGRAM

5991

| SOCK_NONBLOCK | SOCK_CLOEXEC, 0,

5992

socketfds), ==, 0);

5993

__attribute__((cleanup(cleanup_close)))

5994

const int read_socket = socketfds[0];

5995

const int write_socket = socketfds[1];

5996

task_context task = {

5997

.func=send_password_to_socket,

5998

.question_filename=strdup(question_filename),

5999

.filename=strdup(filename),

6000

.epoll_fd=epoll_fd,

6001

.fd=write_socket,

6002

.password=&password,

6003

.cancelled_filenames=&cancelled_filenames,

6004

.mandos_client_exited=(bool[]){false},

6005

.password_is_read=(bool[]){false},

6006

.current_time=(mono_microsecs[]){0},

6007

};

6008

g_assert_nonnull(task.question_filename);

6009

6010

task.func(task, queue);

6011

6012

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

6013

6014

const task_context *const added_task = find_matching_task(queue,

6015

task);

6016

g_assert_nonnull(added_task);

6017

g_assert_cmpuint((unsigned int)password.length, ==, 0);

6018

g_assert_true(queue->next_run == 0);

6019

6020

g_assert_cmpint(added_task->fd, >, 0);

6021

g_assert_true(epoll_set_contains(epoll_fd, added_task->fd,

6022

EPOLLOUT));

6023

}

6024

6025

static

6026

void test_send_password_to_socket_EMSGSIZE(__attribute__((unused))

6027

test_fixture *fixture,

6028

__attribute__((unused))

6029

gconstpointer user_data){

6030

__attribute__((cleanup(cleanup_close)))

6031

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6032

g_assert_cmpint(epoll_fd, >=, 0);

6033

const char question_filename[] = "/nonexistent/question";

6034

char *const filename = strdup("/nonexistent/socket");

6035

__attribute__((cleanup(string_set_clear)))

6036

string_set cancelled_filenames = {};

6037

int socketfds[2];

6038

6039

/* Find a message size which triggers EMSGSIZE */

6040

__attribute__((cleanup(cleanup_string)))

6041

char *message_buffer = NULL;

6042

size_t message_size = PIPE_BUF + 1;

6043

for(ssize_t ssret = 0; ssret >= 0; message_size += 1024){

6044

if(message_size >= 1024*1024*1024){ /* 1 GiB */

6045

g_test_skip("Skipping EMSGSIZE test: Will not try 1GiB");

6046

return;

6047

}

6048

message_buffer = realloc(message_buffer, message_size);

6049

if(message_buffer == NULL){

6050

g_test_skip("Skipping EMSGSIZE test");

6051

g_test_message("Failed to malloc() %" PRIuMAX " bytes",

6052

(uintmax_t)message_size);

6053

return;

6054

}

6055

/* Fill buffer with 'x' */

6056

memset(message_buffer, 'x', message_size);

6057

/* Create a new socketpair for each message size to avoid having

6058

to empty the pipe by reading the message to a separate buffer

6059

*/

6060

g_assert_cmpint(socketpair(PF_LOCAL, SOCK_DGRAM

6061

| SOCK_NONBLOCK | SOCK_CLOEXEC, 0,

6062

socketfds), ==, 0);

6063

ssret = send(socketfds[1], message_buffer, message_size,

6064

MSG_NOSIGNAL);

6065

error_t saved_errno = errno;

6066

g_assert_cmpint(close(socketfds[0]), ==, 0);

6067

g_assert_cmpint(close(socketfds[1]), ==, 0);

6068

6069

if(ssret < 0){

6070

if(saved_errno != EMSGSIZE) {

6071

g_test_skip("Skipping EMSGSIZE test");

6072

g_test_message("Error on send(%" PRIuMAX " bytes): %s",

6073

(uintmax_t)message_size,

6074

strerror(saved_errno));

6075

return;

6076

}

6077

break;

6078

} else if(ssret != (ssize_t)message_size){

6079

g_test_skip("Skipping EMSGSIZE test");

6080

g_test_message("Partial send(): %" PRIuMAX " of %" PRIdMAX

6081

" bytes", (uintmax_t)ssret,

6082

(intmax_t)message_size);

6083

return;

6084

}

6085

}

6086

g_test_message("EMSGSIZE triggered by %" PRIdMAX " bytes",

6087

(intmax_t)message_size);

6088

6089

buffer password = {

6090

.data=message_buffer,

6091

.length=message_size - 2, /* Compensate for added '+' and NUL */

6092

.allocated=message_size,

6093

};

6094

if(mlock(password.data, password.allocated) != 0){

6095

g_assert_true(errno == EPERM or errno == ENOMEM);

6096

}

6097

6098

__attribute__((cleanup(cleanup_queue)))

6099

task_queue *queue = create_queue();

6100

g_assert_nonnull(queue);

6101

g_assert_cmpint(socketpair(PF_LOCAL, SOCK_DGRAM

6102

| SOCK_NONBLOCK | SOCK_CLOEXEC, 0,

6103

socketfds), ==, 0);

6104

__attribute__((cleanup(cleanup_close)))

6105

const int read_socket = socketfds[0];

6106

__attribute__((cleanup(cleanup_close)))

6107

const int write_socket = socketfds[1];

6108

task_context task = {

6109

.func=send_password_to_socket,

6110

.question_filename=strdup(question_filename),

6111

.filename=filename,

6112

.epoll_fd=epoll_fd,

6113

.fd=write_socket,

6114

.password=&password,

6115

.cancelled_filenames=&cancelled_filenames,

6116

.mandos_client_exited=(bool[]){true},

6117

.password_is_read=(bool[]){true},

6118

.current_time=(mono_microsecs[]){0},

6119

};

6120

g_assert_nonnull(task.question_filename);

6121

6122

run_task_with_stderr_to_dev_null(task, queue);

6123

6124

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

6125

g_assert_true(string_set_contains(cancelled_filenames,

6126

question_filename));

6127

}

6128

6129

static void test_send_password_to_socket_retry(__attribute__((unused))

6130

test_fixture *fixture,

6131

__attribute__((unused))

6132

gconstpointer

6133

user_data){

6134

__attribute__((cleanup(cleanup_close)))

6135

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6136

g_assert_cmpint(epoll_fd, >=, 0);

6137

__attribute__((cleanup(cleanup_string)))

6138

char *const question_filename = strdup("/nonexistent/question");

6139

g_assert_nonnull(question_filename);

6140

__attribute__((cleanup(cleanup_string)))

6141

char *const filename = strdup("/nonexistent/socket");

6142

g_assert_nonnull(filename);

6143

__attribute__((cleanup(string_set_clear)))

6144

string_set cancelled_filenames = {};

6145

__attribute__((cleanup(cleanup_buffer)))

6146

buffer password = {};

6147

6148

__attribute__((cleanup(cleanup_queue)))

6149

task_queue *queue = create_queue();

6150

g_assert_nonnull(queue);

6151

int socketfds[2];

6152

g_assert_cmpint(socketpair(PF_LOCAL, SOCK_DGRAM

6153

| SOCK_NONBLOCK | SOCK_CLOEXEC, 0,

6154

socketfds), ==, 0);

6155

__attribute__((cleanup(cleanup_close)))

6156

const int read_socket = socketfds[0];

6157

const int write_socket = socketfds[1];

6158

/* Close the server side socket to force ECONNRESET on client */

6159

g_assert_cmpint(close(read_socket), ==, 0);

6160

task_context task = {

6161

.func=send_password_to_socket,

6162

.question_filename=strdup(question_filename),

6163

.filename=strdup(filename),

6164

.epoll_fd=epoll_fd,

6165

.fd=write_socket,

6166

.password=&password,

6167

.cancelled_filenames=&cancelled_filenames,

6168

.mandos_client_exited=(bool[]){true},

6169

.password_is_read=(bool[]){true},

6170

.current_time=(mono_microsecs[]){0},

6171

};

6172

g_assert_nonnull(task.question_filename);

6173

6174

task.func(task, queue);

6175

6176

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

6177

6178

const task_context *const added_task = find_matching_task(queue,

6179

task);

6180

g_assert_nonnull(added_task);

6181

g_assert_cmpuint((unsigned int)password.length, ==, 0);

6182

6183

g_assert_true(epoll_set_contains(epoll_fd, added_task->fd,

6184

EPOLLOUT));

6185

}

6186

6187

static

6188

void test_send_password_to_socket_bad_epoll(__attribute__((unused))

6189

test_fixture *fixture,

6190

__attribute__((unused))

6191

gconstpointer user_data){

6192

__attribute__((cleanup(cleanup_close)))

6193

const int epoll_fd = open("/dev/null",

6194

O_WRONLY | O_CLOEXEC | O_NOCTTY);

6195

__attribute__((cleanup(cleanup_string)))

6196

char *const question_filename = strdup("/nonexistent/question");

6197

g_assert_nonnull(question_filename);

6198

__attribute__((cleanup(cleanup_string)))

6199

char *const filename = strdup("/nonexistent/socket");

6200

g_assert_nonnull(filename);

6201

__attribute__((cleanup(string_set_clear)))

6202

string_set cancelled_filenames = {};

6203

__attribute__((cleanup(cleanup_buffer)))

6204

buffer password = {};

6205

6206

const mono_microsecs current_time = 11;

6207

__attribute__((cleanup(cleanup_queue)))

6208

task_queue *queue = create_queue();

6209

g_assert_nonnull(queue);

6210

int socketfds[2];

6211

g_assert_cmpint(socketpair(PF_LOCAL, SOCK_DGRAM

6212

| SOCK_NONBLOCK | SOCK_CLOEXEC, 0,

6213

socketfds), ==, 0);

6214

__attribute__((cleanup(cleanup_close)))

6215

const int read_socket = socketfds[0];

6216

const int write_socket = socketfds[1];

6217

/* Close the server side socket to force ECONNRESET on client */

6218

g_assert_cmpint(close(read_socket), ==, 0);

6219

task_context task = {

6220

.func=send_password_to_socket,

6221

.question_filename=strdup(question_filename),

6222

.filename=strdup(filename),

6223

.epoll_fd=epoll_fd,

6224

.fd=write_socket,

6225

.password=&password,

6226

.cancelled_filenames=&cancelled_filenames,

6227

.mandos_client_exited=(bool[]){true},

6228

.password_is_read=(bool[]){true},

6229

.current_time=&current_time,

6230

};

6231

g_assert_nonnull(task.question_filename);

6232

6233

run_task_with_stderr_to_dev_null(task, queue);

6234

6235

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

6236

6237

const task_context *const added_task = find_matching_task(queue,

6238

task);

6239

g_assert_nonnull(added_task);

6240

g_assert_true(queue->next_run == current_time + 1000000);

6241

g_assert_cmpuint((unsigned int)password.length, ==, 0);

6242

}

6243

6244

static void assert_send_password_to_socket_password(buffer password){

6245

__attribute__((cleanup(cleanup_close)))

6246

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6247

g_assert_cmpint(epoll_fd, >=, 0);

6248

char *const question_filename = strdup("/nonexistent/question");

6249

g_assert_nonnull(question_filename);

6250

char *const filename = strdup("/nonexistent/socket");

6251

g_assert_nonnull(filename);

6252

__attribute__((cleanup(string_set_clear)))

6253

string_set cancelled_filenames = {};

6254

6255

__attribute__((cleanup(cleanup_queue)))

6256

task_queue *queue = create_queue();

6257

g_assert_nonnull(queue);

6258

int socketfds[2];

6259

g_assert_cmpint(socketpair(PF_LOCAL, SOCK_DGRAM

6260

| SOCK_NONBLOCK | SOCK_CLOEXEC, 0,

6261

socketfds), ==, 0);

6262

__attribute__((cleanup(cleanup_close)))

6263

const int read_socket = socketfds[0];

6264

const int write_socket = socketfds[1];

6265

task_context task = {

6266

.func=send_password_to_socket,

6267

.question_filename=question_filename,

6268

.filename=filename,

6269

.epoll_fd=epoll_fd,

6270

.fd=write_socket,

6271

.password=&password,

6272

.cancelled_filenames=&cancelled_filenames,

6273

.mandos_client_exited=(bool[]){true},

6274

.password_is_read=(bool[]){true},

6275

.current_time=(mono_microsecs[]){0},

6276

};

6277

6278

char *expected_written_data = malloc(password.length + 2);

6279

g_assert_nonnull(expected_written_data);

6280

expected_written_data[0] = '+';

6281

expected_written_data[password.length + 1] = '\0';

6282

if(password.length > 0){

6283

g_assert_nonnull(password.data);

6284

memcpy(expected_written_data + 1, password.data, password.length);

6285

}

6286

6287

task.func(task, queue);

6288

6289

char buf[PIPE_BUF];

6290

g_assert_cmpint((int)read(read_socket, buf, PIPE_BUF), ==,

6291

(int)(password.length + 2));

6292

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

6293

6294

g_assert_true(memcmp(expected_written_data, buf,

6295

password.length + 2) == 0);

6296

6297

g_assert_true(epoll_set_does_not_contain(epoll_fd, write_socket));

6298

6299

free(expected_written_data);

6300

}

6301

6302

static void

6303

test_send_password_to_socket_null_password(__attribute__((unused))

6304

test_fixture *fixture,

6305

__attribute__((unused))

6306

gconstpointer user_data){

6307

__attribute__((cleanup(cleanup_buffer)))

6308

buffer password = {};

6309

assert_send_password_to_socket_password(password);

6310

}

6311

6312

static void

6313

test_send_password_to_socket_empty_password(__attribute__((unused))

6314

test_fixture *fixture,

6315

__attribute__((unused))

6316

gconstpointer user_data){

6317

__attribute__((cleanup(cleanup_buffer)))

6318

buffer password = {

6319

.data=malloc(1), /* because malloc(0) may return NULL */

6320

.length=0,

6321

.allocated=0, /* deliberate lie */

6322

};

6323

g_assert_nonnull(password.data);

6324

assert_send_password_to_socket_password(password);

6325

}

6326

6327

static void

6328

test_send_password_to_socket_empty_str_pass(__attribute__((unused))

6329

test_fixture *fixture,

6330

__attribute__((unused))

6331

gconstpointer user_data){

6332

__attribute__((cleanup(cleanup_buffer)))

6333

buffer password = {

6334

.data=strdup(""),

6335

.length=0,

6336

.allocated=1,

6337

};

6338

if(mlock(password.data, password.allocated) != 0){

6339

g_assert_true(errno == EPERM or errno == ENOMEM);

6340

}

6341

assert_send_password_to_socket_password(password);

6342

}

6343

6344

static void

6345

test_send_password_to_socket_text_password(__attribute__((unused))

6346

test_fixture *fixture,

6347

__attribute__((unused))

6348

gconstpointer user_data){

6349

const char dummy_test_password[] = "dummy test password";

6350

__attribute__((cleanup(cleanup_buffer)))

6351

buffer password = {

6352

.data = strdup(dummy_test_password),

6353

.length = strlen(dummy_test_password),

6354

.allocated = sizeof(dummy_test_password),

6355

};

6356

if(mlock(password.data, password.allocated) != 0){

6357

g_assert_true(errno == EPERM or errno == ENOMEM);

6358

}

6359

assert_send_password_to_socket_password(password);

6360

}

6361

6362

static void

6363

test_send_password_to_socket_binary_password(__attribute__((unused))

6364

test_fixture *fixture,

6365

__attribute__((unused))

6366

gconstpointer user_data){

6367

__attribute__((cleanup(cleanup_buffer)))

6368

buffer password = {

6369

.data=malloc(255),

6370

.length=255,

6371

.allocated=255,

6372

};

6373

g_assert_nonnull(password.data);

6374

if(mlock(password.data, password.allocated) != 0){

6375

g_assert_true(errno == EPERM or errno == ENOMEM);

6376

}

6377

char c = 1; /* Start at 1, avoiding NUL */

6378

for(int i=0; i < 255; i++){

6379

password.data[i] = c++;

6380

}

6381

assert_send_password_to_socket_password(password);

6382

}

6383

6384

static void

6385

test_send_password_to_socket_nuls_in_password(__attribute__((unused))

6386

test_fixture *fixture,

6387

__attribute__((unused))

6388

gconstpointer

6389

user_data){

6390

char test_password[] = {'\0', 'a', '\0', 'b', '\0', 'c', '\0'};

6391

__attribute__((cleanup(cleanup_buffer)))

6392

buffer password = {

6393

.data=malloc(sizeof(test_password)),

6394

.length=sizeof(test_password),

6395

.allocated=sizeof(test_password),

6396

};

6397

g_assert_nonnull(password.data);

6398

if(mlock(password.data, password.allocated) !=0){

6399

g_assert_true(errno == EPERM or errno == ENOMEM);

6400

}

6401

memcpy(password.data, test_password, password.allocated);

6402

assert_send_password_to_socket_password(password);

6403

}

6404

6405

static bool assert_add_existing_questions_to_devnull(task_queue

6406

*const,

6407

const int,

6408

buffer *const,

6409

string_set *,

6410

const

6411

mono_microsecs

6412

*const,

6413

bool *const,

6414

bool *const,

6415

const char

6416

*const);

6417

6418

static void test_add_existing_questions_ENOENT(__attribute__((unused))

6419

test_fixture *fixture,

6420

__attribute__((unused))

6421

gconstpointer

6422

user_data){

6423

__attribute__((cleanup(cleanup_queue)))

6424

task_queue *queue = create_queue();

6425

g_assert_nonnull(queue);

6426

__attribute__((cleanup(cleanup_close)))

6427

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6428

g_assert_cmpint(epoll_fd, >=, 0);

6429

__attribute__((cleanup(string_set_clear)))

6430

string_set cancelled_filenames = {};

6431

6432

g_assert_false(assert_add_existing_questions_to_devnull

6433

(queue,

6434

epoll_fd,

6435

(buffer[]){{}}, /* password */

6436

&cancelled_filenames,

6437

(mono_microsecs[]){0}, /* current_time */

6438

(bool[]){false}, /* mandos_client_exited */

6439

(bool[]){false}, /* password_is_read */

6440

"/nonexistent")); /* dirname */

6441

6442

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

6443

}

6444

6445

static

6446

bool assert_add_existing_questions_to_devnull(task_queue

6447

*const queue,

6448

const int

6449

epoll_fd,

6450

buffer *const

6451

password,

6452

string_set

6453

*cancelled_filenames,

6454

const mono_microsecs

6455

*const current_time,

6456

bool *const

6457

mandos_client_exited,

6458

bool *const

6459

password_is_read,

6460

const char *const

6461

dirname){

6462

__attribute__((cleanup(cleanup_close)))

6463

const int devnull_fd = open("/dev/null",

6464

O_WRONLY | O_CLOEXEC | O_NOCTTY);

6465

g_assert_cmpint(devnull_fd, >=, 0);

6466

__attribute__((cleanup(cleanup_close)))

6467

const int real_stderr_fd = dup(STDERR_FILENO);

6468

g_assert_cmpint(real_stderr_fd, >=, 0);

6469

dup2(devnull_fd, STDERR_FILENO);

6470

const bool ret = add_existing_questions(queue, epoll_fd, password,

6471

cancelled_filenames,

6472

current_time,

6473

mandos_client_exited,

6474

password_is_read, dirname);

6475

dup2(real_stderr_fd, STDERR_FILENO);

6476

return ret;

6477

}

6478

6479

static

6480

void test_add_existing_questions_no_questions(__attribute__((unused))

6481

test_fixture *fixture,

6482

__attribute__((unused))

6483

gconstpointer

6484

user_data){

6485

__attribute__((cleanup(cleanup_queue)))

6486

task_queue *queue = create_queue();

6487

g_assert_nonnull(queue);

6488

__attribute__((cleanup(cleanup_close)))

6489

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6490

g_assert_cmpint(epoll_fd, >=, 0);

6491

__attribute__((cleanup(string_set_clear)))

6492

string_set cancelled_filenames = {};

6493

__attribute__((cleanup(cleanup_string)))

6494

char *tempdir = make_temporary_directory();

6495

g_assert_nonnull(tempdir);

6496

6497

g_assert_false(assert_add_existing_questions_to_devnull

6498

(queue,

6499

epoll_fd,

6500

(buffer[]){{}}, /* password */

6501

&cancelled_filenames,

6502

(mono_microsecs[]){0}, /* current_time */

6503

(bool[]){false}, /* mandos_client_exited */

6504

(bool[]){false}, /* password_is_read */

6505

tempdir));

6506

6507

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

6508

6509

g_assert_cmpint(rmdir(tempdir), ==, 0);

6510

}

6511

6512

static char *make_question_file_in_directory(const char *const);

6513

6514

static

6515

void test_add_existing_questions_one_question(__attribute__((unused))

6516

test_fixture *fixture,

6517

__attribute__((unused))

6518

gconstpointer

6519

user_data){

6520

__attribute__((cleanup(cleanup_queue)))

6521

task_queue *queue = create_queue();

6522

g_assert_nonnull(queue);

6523

__attribute__((cleanup(cleanup_close)))

6524

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6525

g_assert_cmpint(epoll_fd, >=, 0);

6526

__attribute__((cleanup(cleanup_buffer)))

6527

buffer password = {};

6528

__attribute__((cleanup(string_set_clear)))

6529

string_set cancelled_filenames = {};

6530

const mono_microsecs current_time = 0;

6531

bool mandos_client_exited = false;

6532

bool password_is_read = false;

6533

__attribute__((cleanup(cleanup_string)))

6534

char *tempdir = make_temporary_directory();

6535

g_assert_nonnull(tempdir);

6536

__attribute__((cleanup(cleanup_string)))

6537

char *question_filename

6538

= make_question_file_in_directory(tempdir);

6539

g_assert_nonnull(question_filename);

6540

6541

g_assert_true(assert_add_existing_questions_to_devnull

6542

(queue,

6543

epoll_fd,

6544

&password,

6545

&cancelled_filenames,

6546

&current_time,

6547

&mandos_client_exited,

6548

&password_is_read,

6549

tempdir));

6550

6551

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

6552

6553

g_assert_nonnull(find_matching_task(queue, (task_context){

6554

.func=open_and_parse_question,

6555

.epoll_fd=epoll_fd,

6556

.filename=question_filename,

6557

.question_filename=question_filename,

6558

.password=&password,

6559

.cancelled_filenames=&cancelled_filenames,

6560

.current_time=&current_time,

6561

.mandos_client_exited=&mandos_client_exited,

6562

.password_is_read=&password_is_read,

6563

}));

6564

6565

g_assert_true(queue->next_run == 1);

6566

6567

g_assert_cmpint(unlink(question_filename), ==, 0);

6568

g_assert_cmpint(rmdir(tempdir), ==, 0);

6569

}

6570

6571

static char *make_question_file_in_directory(const char

6572

*const dir){

6573

return make_temporary_prefixed_file_in_directory("ask.", dir);

6574

}

6575

6576

static

6577

void test_add_existing_questions_two_questions(__attribute__((unused))

6578

test_fixture *fixture,

6579

__attribute__((unused))

6580

gconstpointer

6581

user_data){

6582

__attribute__((cleanup(cleanup_queue)))

6583

task_queue *queue = create_queue();

6584

g_assert_nonnull(queue);

6585

__attribute__((cleanup(cleanup_close)))

6586

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6587

g_assert_cmpint(epoll_fd, >=, 0);

6588

__attribute__((cleanup(cleanup_buffer)))

6589

buffer password = {};

6590

__attribute__((cleanup(string_set_clear)))

6591

string_set cancelled_filenames = {};

6592

const mono_microsecs current_time = 0;

6593

bool mandos_client_exited = false;

6594

bool password_is_read = false;

6595

__attribute__((cleanup(cleanup_string)))

6596

char *tempdir = make_temporary_directory();

6597

g_assert_nonnull(tempdir);

6598

__attribute__((cleanup(cleanup_string)))

6599

char *question_filename1

6600

= make_question_file_in_directory(tempdir);

6601

g_assert_nonnull(question_filename1);

6602

__attribute__((cleanup(cleanup_string)))

6603

char *question_filename2

6604

= make_question_file_in_directory(tempdir);

6605

g_assert_nonnull(question_filename2);

6606

6607

g_assert_true(assert_add_existing_questions_to_devnull

6608

(queue,

6609

epoll_fd,

6610

&password,

6611

&cancelled_filenames,

6612

&current_time,

6613

&mandos_client_exited,

6614

&password_is_read,

6615

tempdir));

6616

6617

g_assert_cmpuint((unsigned int)queue->length, ==, 2);

6618

6619

g_assert_true(queue->next_run == 1);

6620

6621

__attribute__((cleanup(string_set_clear)))

6622

string_set seen_questions = {};

6623

6624

bool queue_contains_question_opener(char *const question_filename){

6625

return(find_matching_task(queue, (task_context){

6626

.func=open_and_parse_question,

6627

.epoll_fd=epoll_fd,

6628

.question_filename=question_filename,

6629

.password=&password,

6630

.cancelled_filenames=&cancelled_filenames,

6631

.current_time=&current_time,

6632

.mandos_client_exited=&mandos_client_exited,

6633

.password_is_read=&password_is_read,

6634

}) != NULL);

6635

}

6636

6637

g_assert_true(queue_contains_question_opener(question_filename1));

6638

g_assert_true(queue_contains_question_opener(question_filename2));

6639

6640

g_assert_true(queue->next_run == 1);

6641

6642

g_assert_cmpint(unlink(question_filename1), ==, 0);

6643

g_assert_cmpint(unlink(question_filename2), ==, 0);

6644

g_assert_cmpint(rmdir(tempdir), ==, 0);

6645

}

6646

6647

static void

6648

test_add_existing_questions_non_questions(__attribute__((unused))

6649

test_fixture *fixture,

6650

__attribute__((unused))

6651

gconstpointer user_data){

6652

__attribute__((cleanup(cleanup_queue)))

6653

task_queue *queue = create_queue();

6654

g_assert_nonnull(queue);

6655

__attribute__((cleanup(cleanup_close)))

6656

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6657

g_assert_cmpint(epoll_fd, >=, 0);

6658

__attribute__((cleanup(string_set_clear)))

6659

string_set cancelled_filenames = {};

6660

__attribute__((cleanup(cleanup_string)))

6661

char *tempdir = make_temporary_directory();

6662

g_assert_nonnull(tempdir);

6663

__attribute__((cleanup(cleanup_string)))

6664

char *question_filename1

6665

= make_temporary_file_in_directory(tempdir);

6666

g_assert_nonnull(question_filename1);

6667

__attribute__((cleanup(cleanup_string)))

6668

char *question_filename2

6669

= make_temporary_file_in_directory(tempdir);

6670

g_assert_nonnull(question_filename2);

6671

6672

g_assert_false(assert_add_existing_questions_to_devnull

6673

(queue,

6674

epoll_fd,

6675

(buffer[]){{}}, /* password */

6676

&cancelled_filenames,

6677

(mono_microsecs[]){0}, /* current_time */

6678

(bool[]){false}, /* mandos_client_exited */

6679

(bool[]){false}, /* password_is_read */

6680

tempdir));

6681

6682

g_assert_cmpuint((unsigned int)queue->length, ==, 0);

6683

6684

g_assert_cmpint(unlink(question_filename1), ==, 0);

6685

g_assert_cmpint(unlink(question_filename2), ==, 0);

6686

g_assert_cmpint(rmdir(tempdir), ==, 0);

6687

}

6688

6689

static void

6690

test_add_existing_questions_both_types(__attribute__((unused))

6691

test_fixture *fixture,

6692

__attribute__((unused))

6693

gconstpointer user_data){

6694

__attribute__((cleanup(cleanup_queue)))

6695

task_queue *queue = create_queue();

6696

g_assert_nonnull(queue);

6697

__attribute__((cleanup(cleanup_close)))

6698

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6699

g_assert_cmpint(epoll_fd, >=, 0);

6700

__attribute__((cleanup(cleanup_buffer)))

6701

buffer password = {};

6702

__attribute__((cleanup(string_set_clear)))

6703

string_set cancelled_filenames = {};

6704

const mono_microsecs current_time = 0;

6705

bool mandos_client_exited = false;

6706

bool password_is_read = false;

6707

__attribute__((cleanup(cleanup_string)))

6708

char *tempdir = make_temporary_directory();

6709

g_assert_nonnull(tempdir);

6710

__attribute__((cleanup(cleanup_string)))

6711

char *tempfilename1 = make_temporary_file_in_directory(tempdir);

6712

g_assert_nonnull(tempfilename1);

6713

__attribute__((cleanup(cleanup_string)))

6714

char *tempfilename2 = make_temporary_file_in_directory(tempdir);

6715

g_assert_nonnull(tempfilename2);

6716

__attribute__((cleanup(cleanup_string)))

6717

char *question_filename

6718

= make_question_file_in_directory(tempdir);

6719

g_assert_nonnull(question_filename);

6720

6721

g_assert_true(assert_add_existing_questions_to_devnull

6722

(queue,

6723

epoll_fd,

6724

&password,

6725

&cancelled_filenames,

6726

&current_time,

6727

&mandos_client_exited,

6728

&password_is_read,

6729

tempdir));

6730

6731

g_assert_cmpuint((unsigned int)queue->length, ==, 1);

6732

6733

g_assert_nonnull(find_matching_task(queue, (task_context){

6734

.func=open_and_parse_question,

6735

.epoll_fd=epoll_fd,

6736

.filename=question_filename,

6737

.question_filename=question_filename,

6738

.password=&password,

6739

.cancelled_filenames=&cancelled_filenames,

6740

.current_time=&current_time,

6741

.mandos_client_exited=&mandos_client_exited,

6742

.password_is_read=&password_is_read,

6743

}));

6744

6745

g_assert_true(queue->next_run == 1);

6746

6747

g_assert_cmpint(unlink(tempfilename1), ==, 0);

6748

g_assert_cmpint(unlink(tempfilename2), ==, 0);

6749

g_assert_cmpint(unlink(question_filename), ==, 0);

6750

g_assert_cmpint(rmdir(tempdir), ==, 0);

6751

}

6752

6753

static void test_wait_for_event_timeout(__attribute__((unused))

6754

test_fixture *fixture,

6755

__attribute__((unused))

6756

gconstpointer user_data){

6757

__attribute__((cleanup(cleanup_close)))

6758

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6759

g_assert_cmpint(epoll_fd, >=, 0);

6760

6761

g_assert_true(wait_for_event(epoll_fd, 1, 0));

6762

}

6763

6764

static void test_wait_for_event_event(__attribute__((unused))

6765

test_fixture *fixture,

6766

__attribute__((unused))

6767

gconstpointer user_data){

6768

__attribute__((cleanup(cleanup_close)))

6769

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6770

g_assert_cmpint(epoll_fd, >=, 0);

6771

int pipefds[2];

6772

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

6773

__attribute__((cleanup(cleanup_close)))

6774

const int read_pipe = pipefds[0];

6775

__attribute__((cleanup(cleanup_close)))

6776

const int write_pipe = pipefds[1];

6777

g_assert_cmpint(epoll_ctl(epoll_fd, EPOLL_CTL_ADD, read_pipe,

6778

&(struct epoll_event)

6779

{ .events=EPOLLIN | EPOLLRDHUP }), ==, 0);

6780

g_assert_cmpint((int)write(write_pipe, "x", 1), ==, 1);

6781

6782

g_assert_true(wait_for_event(epoll_fd, 0, 0));

6783

}

6784

6785

static void test_wait_for_event_sigchld(test_fixture *fixture,

6786

__attribute__((unused))

6787

gconstpointer user_data){

6788

const pid_t pid = fork();

6789

if(pid == 0){ /* Child */

6790

if(not restore_signal_handler(&fixture->orig_sigaction)){

6791

_exit(EXIT_FAILURE);

6792

}

6793

if(not restore_sigmask(&fixture->orig_sigmask)){

6794

_exit(EXIT_FAILURE);

6795

}

6796

exit(EXIT_SUCCESS);

6797

}

6798

g_assert_true(pid != -1);

6799

__attribute__((cleanup(cleanup_close)))

6800

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6801

g_assert_cmpint(epoll_fd, >=, 0);

6802

6803

g_assert_true(wait_for_event(epoll_fd, 0, 0));

6804

6805

int status;

6806

g_assert_true(waitpid(pid, &status, 0) == pid);

6807

g_assert_true(WIFEXITED(status));

6808

g_assert_cmpint(WEXITSTATUS(status), ==, EXIT_SUCCESS);

6809

}

6810

6811

static void test_run_queue_zeroes_next_run(__attribute__((unused))

6812

test_fixture *fixture,

6813

__attribute__((unused))

6814

gconstpointer user_data){

6815

__attribute__((cleanup(cleanup_queue)))

6816

task_queue *queue = create_queue();

6817

g_assert_nonnull(queue);

6818

queue->next_run = 1;

6819

__attribute__((cleanup(cleanup_close)))

6820

const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);

6821

__attribute__((cleanup(string_set_clear)))

6822

string_set cancelled_filenames = {};

6823

bool quit_now = false;

6824

6825

g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));

6826

g_assert_false(quit_now);

6827

g_assert_cmpuint((unsigned int)queue->next_run, ==, 0);

6828

}

6829

6830

static

6831

void test_run_queue_clears_cancelled_filenames(__attribute__((unused))

6832

test_fixture *fixture,

6833

__attribute__((unused))

6834

gconstpointer

6835

user_data){

6836

__attribute__((cleanup(cleanup_queue)))

6837

task_queue *queue = create_queue();

6838

g_assert_nonnull(queue);

6839

__attribute__((cleanup(string_set_clear)))

6840

string_set cancelled_filenames = {};

6841

bool quit_now = false;

6842

const char question_filename[] = "/nonexistent/question_filename";

6843

g_assert_true(string_set_add(&cancelled_filenames,

6844

question_filename));

6845

6846

g_assert_true(add_to_queue(queue,

6847

(task_context){ .func=dummy_func }));

6848

6849

g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));

6850

g_assert_false(quit_now);

6851

g_assert_cmpuint((unsigned int)(queue->length), ==, 0);

6852

g_assert_false(string_set_contains(cancelled_filenames,

6853

question_filename));

6854

}

6855

6856

static

6857

void test_run_queue_skips_cancelled_filenames(__attribute__((unused))

6858

test_fixture *fixture,

6859

__attribute__((unused))

6860

gconstpointer

6861

user_data){

6862

__attribute__((cleanup(cleanup_queue)))

6863

task_queue *queue = create_queue();

6864

g_assert_nonnull(queue);

6865

__attribute__((cleanup(string_set_clear)))

6866

string_set cancelled_filenames = {};

6867

bool quit_now = false;

6868

int pipefds[2];

6869

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

6870

__attribute__((cleanup(cleanup_close)))

6871

const int read_pipe = pipefds[0];

6872

g_assert_cmpint(close(pipefds[1]), ==, 0);

6873

const char question_filename[] = "/nonexistent/question_filename";

6874

g_assert_true(string_set_add(&cancelled_filenames,

6875

question_filename));

6876

__attribute__((nonnull))

6877

void quit_func(const task_context task,

6878

__attribute__((unused)) task_queue *const q){

6879

g_assert_nonnull(task.quit_now);

6880

*task.quit_now = true;

6881

}

6882

task_context task = {

6883

.func=quit_func,

6884

.question_filename=strdup(question_filename),

6885

.quit_now=&quit_now,

6886

.fd=read_pipe,

6887

};

6888

g_assert_nonnull(task.question_filename);

6889

6890

g_assert_true(add_to_queue(queue, task));

6891

6892

g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));

6893

g_assert_false(quit_now);

6894

6895

/* read_pipe should be closed already */

6896

errno = 0;

6897

bool read_pipe_closed = (close(read_pipe) == -1);

6898

read_pipe_closed &= (errno == EBADF);

6899

g_assert_true(read_pipe_closed);

6900

}

6901

6902

static void test_run_queue_one_task(__attribute__((unused))

6903

test_fixture *fixture,

6904

__attribute__((unused))

6905

gconstpointer user_data){

6906

__attribute__((cleanup(cleanup_queue)))

6907

task_queue *queue = create_queue();

6908

g_assert_nonnull(queue);

6909

__attribute__((cleanup(string_set_clear)))

6910

string_set cancelled_filenames = {};

6911

bool quit_now = false;

6912

6913

__attribute__((nonnull))

6914

void next_run_func(__attribute__((unused))

6915

const task_context task,

6916

task_queue *const q){

6917

q->next_run = 1;

6918

}

6919

6920

task_context task = {

6921

.func=next_run_func,

6922

};

6923

g_assert_true(add_to_queue(queue, task));

6924

6925

g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));

6926

g_assert_cmpuint((unsigned int)(queue->next_run), ==, 1);

6927

g_assert_cmpuint((unsigned int)(queue->length), ==, 0);

6928

}

6929

6930

static void test_run_queue_two_tasks(__attribute__((unused))

6931

test_fixture *fixture,

6932

__attribute__((unused))

6933

gconstpointer user_data){

6934

__attribute__((cleanup(cleanup_queue)))

6935

task_queue *queue = create_queue();

6936

g_assert_nonnull(queue);

6937

queue->next_run = 1;

6938

__attribute__((cleanup(string_set_clear)))

6939

string_set cancelled_filenames = {};

6940

bool quit_now = false;

6941

bool mandos_client_exited = false;

6942

6943

__attribute__((nonnull))

6944

void next_run_func(__attribute__((unused))

6945

const task_context task,

6946

task_queue *const q){

6947

q->next_run = 1;

6948

}

6949

6950

__attribute__((nonnull))

6951

void exited_func(const task_context task,

6952

__attribute__((unused)) task_queue *const q){

6953

*task.mandos_client_exited = true;

6954

}

6955

6956

task_context task1 = {

6957

.func=next_run_func,

6958

};

6959

g_assert_true(add_to_queue(queue, task1));

6960

6961

task_context task2 = {

6962

.func=exited_func,

6963

.mandos_client_exited=&mandos_client_exited,

6964

};

6965

g_assert_true(add_to_queue(queue, task2));

6966

6967

g_assert_true(run_queue(&queue, &cancelled_filenames, &quit_now));

6968

g_assert_false(quit_now);

6969

g_assert_cmpuint((unsigned int)(queue->next_run), ==, 1);

6970

g_assert_true(mandos_client_exited);

6971

g_assert_cmpuint((unsigned int)(queue->length), ==, 0);

6972

}

6973

6974

static void test_run_queue_two_tasks_quit(__attribute__((unused))

6975

test_fixture *fixture,

6976

__attribute__((unused))

6977

gconstpointer user_data){

6978

__attribute__((cleanup(cleanup_queue)))

6979

task_queue *queue = create_queue();

6980

g_assert_nonnull(queue);

6981

__attribute__((cleanup(string_set_clear)))

6982

string_set cancelled_filenames = {};

6983

bool quit_now = false;

6984

bool mandos_client_exited = false;

6985

bool password_is_read = false;

6986

6987

__attribute__((nonnull))

6988

void set_exited_func(const task_context task,

6989

__attribute__((unused)) task_queue *const q){

6990

*task.mandos_client_exited = true;

6991

*task.quit_now = true;

6992

}

6993

task_context task1 = {

6994

.func=set_exited_func,

6995

.quit_now=&quit_now,

6996

.mandos_client_exited=&mandos_client_exited,

6997

};

6998

g_assert_true(add_to_queue(queue, task1));

6999

7000

__attribute__((nonnull))

7001

void set_read_func(const task_context task,

7002

__attribute__((unused)) task_queue *const q){

7003

*task.quit_now = true;

7004

*task.password_is_read = true;

7005

}

7006

task_context task2 = {

7007

.func=set_read_func,

7008

.quit_now=&quit_now,

7009

.password_is_read=&password_is_read,

7010

};

7011

g_assert_true(add_to_queue(queue, task2));

7012

7013

g_assert_false(run_queue(&queue, &cancelled_filenames, &quit_now));

7014

g_assert_true(quit_now);

7015

g_assert_true(mandos_client_exited xor password_is_read);

7016

g_assert_cmpuint((unsigned int)(queue->length), ==, 0);

7017

}

7018

7019

static void test_run_queue_two_tasks_cleanup(__attribute__((unused))

7020

test_fixture *fixture,

7021

__attribute__((unused))

7022

gconstpointer user_data){

7023

__attribute__((cleanup(cleanup_queue)))

7024

task_queue *queue = create_queue();

7025

g_assert_nonnull(queue);

7026

__attribute__((cleanup(string_set_clear)))

7027

string_set cancelled_filenames = {};

7028

int pipefds[2];

7029

g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);

7030

__attribute__((cleanup(cleanup_close)))

7031

const int read_pipe = pipefds[0];

7032

__attribute__((cleanup(cleanup_close)))

7033

const int write_pipe = pipefds[1];

7034

bool quit_now = false;

7035

7036

__attribute__((nonnull))

7037

void read_func(const task_context task,

7038

__attribute__((unused)) task_queue *const q){

7039

*task.quit_now = true;

7040

}

7041

task_context task1 = {

7042

.func=read_func,

7043

.quit_now=&quit_now,

7044

.fd=read_pipe,

7045

};

7046

g_assert_true(add_to_queue(queue, task1));

7047

7048

__attribute__((nonnull))

7049

void write_func(const task_context task,

7050

__attribute__((unused)) task_queue *const q){

7051

*task.quit_now = true;

7052

}

7053

task_context task2 = {

7054

.func=write_func,

7055

.quit_now=&quit_now,

7056

.fd=write_pipe,

7057

};

7058

g_assert_true(add_to_queue(queue, task2));

7059

7060

g_assert_false(run_queue(&queue, &cancelled_filenames, &quit_now));

7061

g_assert_true(quit_now);

7062

7063

/* Either read_pipe or write_pipe should be closed already */

7064

errno = 0;

7065

bool close_read_pipe = (close(read_pipe) == -1);

7066

close_read_pipe &= (errno == EBADF);

7067

errno = 0;

7068

bool close_write_pipe = (close(write_pipe) == -1);

7069

close_write_pipe &= (errno == EBADF);

7070

g_assert_true(close_read_pipe xor close_write_pipe);

7071

g_assert_cmpuint((unsigned int)(queue->length), ==, 0);

7072

}

7073

7074

static void test_setup_signal_handler(__attribute__((unused))

7075

test_fixture *fixture,

7076

__attribute__((unused))

7077

gconstpointer user_data){

7078

/* Save current SIGCHLD action, whatever it is */

7079

struct sigaction expected_sigchld_action;

7080

g_assert_cmpint(sigaction(SIGCHLD, NULL, &expected_sigchld_action),

7081

==, 0);

7082

7083

/* Act; i.e. run the setup_signal_handler() function */

7084

struct sigaction actual_old_sigchld_action;

7085

g_assert_true(setup_signal_handler(&actual_old_sigchld_action));

7086

7087

/* Check that the function correctly set "actual_old_sigchld_action"

7088

to the same values as the previously saved

7089

"expected_sigchld_action" */

7090

/* Check member sa_handler */

7091

g_assert_true(actual_old_sigchld_action.sa_handler

7092

== expected_sigchld_action.sa_handler);

7093

/* Check member sa_mask */

7094

for(int signum = 1; signum < NSIG; signum++){

7095

const int expected_old_block_state

7096

= sigismember(&expected_sigchld_action.sa_mask, signum);

7097

g_assert_cmpint(expected_old_block_state, >=, 0);

7098

const int actual_old_block_state

7099

= sigismember(&actual_old_sigchld_action.sa_mask, signum);

7100

g_assert_cmpint(actual_old_block_state, >=, 0);

7101

g_assert_cmpint(actual_old_block_state,

7102

==, expected_old_block_state);

7103

}

7104

/* Check member sa_flags */

7105

g_assert_true((actual_old_sigchld_action.sa_flags

7106

& (SA_NOCLDSTOP | SA_ONSTACK | SA_RESTART))

7107

== (expected_sigchld_action.sa_flags

7108

& (SA_NOCLDSTOP | SA_ONSTACK | SA_RESTART)));

7109

7110

/* Retrieve the current signal handler for SIGCHLD as set by

7111

setup_signal_handler() */

7112

struct sigaction actual_new_sigchld_action;

7113

g_assert_cmpint(sigaction(SIGCHLD, NULL,

7114

&actual_new_sigchld_action), ==, 0);

7115

/* Check that the signal handler (member sa_handler) is correctly

7116

set to the "handle_sigchld" function */

7117

g_assert_true(actual_new_sigchld_action.sa_handler != SIG_DFL);

7118

g_assert_true(actual_new_sigchld_action.sa_handler != SIG_IGN);

7119

g_assert_true(actual_new_sigchld_action.sa_handler

7120

== handle_sigchld);

7121

/* Check (in member sa_mask) that at least a handful of signals are

7122

actually blocked during the signal handler */

7123

for(int signum = 1; signum < NSIG; signum++){

7124

int actual_new_block_state;

7125

switch(signum){

7126

case SIGTERM:

7127

case SIGINT:

7128

case SIGQUIT:

7129

case SIGHUP:

7130

actual_new_block_state

7131

= sigismember(&actual_new_sigchld_action.sa_mask, signum);

7132

g_assert_cmpint(actual_new_block_state, ==, 1);

7133

continue;

7134

case SIGKILL: /* non-blockable */

7135

case SIGSTOP: /* non-blockable */

7136

case SIGCHLD: /* always blocked */

7137

default:

7138

continue;

7139

}

7140

}

7141

/* Check member sa_flags */

7142

g_assert_true((actual_new_sigchld_action.sa_flags

7143

& (SA_NOCLDSTOP | SA_ONSTACK | SA_RESTART))

7144

== (SA_NOCLDSTOP | SA_RESTART));

7145

7146

/* Restore signal handler */

7147

g_assert_cmpint(sigaction(SIGCHLD, &expected_sigchld_action, NULL),

7148

==, 0);

7149

}

7150

7151

static void test_restore_signal_handler(__attribute__((unused))

7152

test_fixture *fixture,

7153

__attribute__((unused))

7154

gconstpointer user_data){

7155

/* Save current SIGCHLD action, whatever it is */

7156

struct sigaction expected_sigchld_action;

7157

g_assert_cmpint(sigaction(SIGCHLD, NULL, &expected_sigchld_action),

7158

==, 0);

7159

/* Since we haven't established a signal handler yet, there should

7160

not be one established. But another test may have relied on

7161

restore_signal_handler() to restore the signal handler, and if

7162

restore_signal_handler() is buggy (which we should be prepared

7163

for in this test) the signal handler may not have been restored

7164

properly; check for this: */

7165

g_assert_true(expected_sigchld_action.sa_handler != handle_sigchld);

7166

7167

/* Establish a signal handler */

7168

struct sigaction sigchld_action = {

7169

.sa_handler=handle_sigchld,

7170

.sa_flags=SA_RESTART | SA_NOCLDSTOP,

7171

};

7172

g_assert_cmpint(sigfillset(&sigchld_action.sa_mask), ==, 0);

7173

g_assert_cmpint(sigaction(SIGCHLD, &sigchld_action, NULL), ==, 0);

7174

7175

/* Act; i.e. run the restore_signal_handler() function */

7176

g_assert_true(restore_signal_handler(&expected_sigchld_action));

7177

7178

/* Retrieve the restored signal handler data */

7179

struct sigaction actual_restored_sigchld_action;

7180

g_assert_cmpint(sigaction(SIGCHLD, NULL,

7181

&actual_restored_sigchld_action), ==, 0);

7182

7183

/* Check that the function correctly restored the signal action, as

7184

saved in "actual_restored_sigchld_action", to the same values as

7185

the previously saved "expected_sigchld_action" */

7186

/* Check member sa_handler */

7187

g_assert_true(actual_restored_sigchld_action.sa_handler

7188

== expected_sigchld_action.sa_handler);

7189

/* Check member sa_mask */

7190

for(int signum = 1; signum < NSIG; signum++){

7191

const int expected_old_block_state

7192

= sigismember(&expected_sigchld_action.sa_mask, signum);

7193

g_assert_cmpint(expected_old_block_state, >=, 0);

7194

const int actual_restored_block_state

7195

= sigismember(&actual_restored_sigchld_action.sa_mask, signum);

7196

g_assert_cmpint(actual_restored_block_state, >=, 0);

7197

g_assert_cmpint(actual_restored_block_state,

7198

==, expected_old_block_state);

7199

}

7200

/* Check member sa_flags */

7201

g_assert_true((actual_restored_sigchld_action.sa_flags

7202

& (SA_NOCLDSTOP | SA_ONSTACK | SA_RESTART))

7203

== (expected_sigchld_action.sa_flags

7204

& (SA_NOCLDSTOP | SA_ONSTACK | SA_RESTART)));

7205

}

7206

7207

static void test_block_sigchld(__attribute__((unused))

7208

test_fixture *fixture,

7209

__attribute__((unused))

7210

gconstpointer user_data){

7211

/* Save original signal mask */

7212

sigset_t expected_sigmask;

7213

g_assert_cmpint(pthread_sigmask(-1, NULL, &expected_sigmask),

7214

==, 0);

7215

7216

/* Make sure SIGCHLD is unblocked for this test */

7217

sigset_t sigchld_sigmask;

7218

g_assert_cmpint(sigemptyset(&sigchld_sigmask), ==, 0);

7219

g_assert_cmpint(sigaddset(&sigchld_sigmask, SIGCHLD), ==, 0);

7220

g_assert_cmpint(pthread_sigmask(SIG_UNBLOCK, &sigchld_sigmask,

7221

NULL), ==, 0);

7222

7223

/* Act; i.e. run the block_sigchld() function */

7224

sigset_t actual_old_sigmask;

7225

g_assert_true(block_sigchld(&actual_old_sigmask));

7226

7227

/* Check the actual_old_sigmask; it should be the same as the

7228

previously saved signal mask "expected_sigmask". */

7229

for(int signum = 1; signum < NSIG; signum++){

7230

const int expected_old_block_state

7231

= sigismember(&expected_sigmask, signum);

7232

g_assert_cmpint(expected_old_block_state, >=, 0);

7233

const int actual_old_block_state

7234

= sigismember(&actual_old_sigmask, signum);

7235

g_assert_cmpint(actual_old_block_state, >=, 0);

7236

g_assert_cmpint(actual_old_block_state,

7237

==, expected_old_block_state);

7238

}

7239

7240

/* Retrieve the newly set signal mask */

7241

sigset_t actual_sigmask;

7242

g_assert_cmpint(pthread_sigmask(-1, NULL, &actual_sigmask), ==, 0);

7243

7244

/* SIGCHLD should be blocked */

7245

g_assert_cmpint(sigismember(&actual_sigmask, SIGCHLD), ==, 1);

7246

7247

/* Restore signal mask */

7248

g_assert_cmpint(pthread_sigmask(SIG_SETMASK, &expected_sigmask,

7249

NULL), ==, 0);

7250

}

7251

7252

static void test_restore_sigmask(__attribute__((unused))

7253

test_fixture *fixture,

7254

__attribute__((unused))

7255

gconstpointer user_data){

7256

/* Save original signal mask */

7257

sigset_t orig_sigmask;

7258

g_assert_cmpint(pthread_sigmask(-1, NULL, &orig_sigmask), ==, 0);

7259

7260

/* Make sure SIGCHLD is blocked for this test */

7261

sigset_t sigchld_sigmask;

7262

g_assert_cmpint(sigemptyset(&sigchld_sigmask), ==, 0);

7263

g_assert_cmpint(sigaddset(&sigchld_sigmask, SIGCHLD), ==, 0);

7264

g_assert_cmpint(pthread_sigmask(SIG_BLOCK, &sigchld_sigmask,

7265

NULL), ==, 0);

7266

7267

/* Act; i.e. run the restore_sigmask() function */

7268

g_assert_true(restore_sigmask(&orig_sigmask));

7269

7270

/* Retrieve the newly restored signal mask */

7271

sigset_t restored_sigmask;

7272

g_assert_cmpint(pthread_sigmask(-1, NULL, &restored_sigmask),

7273

==, 0);

7274

7275

/* Check the restored_sigmask; it should be the same as the

7276

previously saved signal mask "orig_sigmask". */

7277

for(int signum = 1; signum < NSIG; signum++){

7278

const int orig_block_state = sigismember(&orig_sigmask, signum);

7279

g_assert_cmpint(orig_block_state, >=, 0);

7280

const int restored_block_state = sigismember(&restored_sigmask,

7281

signum);

7282

g_assert_cmpint(restored_block_state, >=, 0);

7283

g_assert_cmpint(restored_block_state, ==, orig_block_state);

7284

}

7285

7286

/* Restore signal mask */

7287

g_assert_cmpint(pthread_sigmask(SIG_SETMASK, &orig_sigmask,

7288

NULL), ==, 0);

7289

}

7290

7291

static void test_parse_arguments_noargs(__attribute__((unused))

7292

test_fixture *fixture,

7293

__attribute__((unused))

7294

gconstpointer user_data){

7295

char *argv[] = {

7296

strdup("prgname"),

7297

NULL };

7298

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7299

7300

char *agent_directory = NULL;

7301

char *helper_directory = NULL;

7302

uid_t user = 0;

7303

gid_t group = 0;

7304

char *mandos_argz = NULL;

7305

size_t mandos_argz_length = 0;

7306

7307

g_assert_true(parse_arguments(argc, argv, false, &agent_directory,

7308

&helper_directory, &user, &group,

7309

&mandos_argz, &mandos_argz_length));

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

g_assert_null(mandos_argz);

7315

g_assert_true(mandos_argz_length == 0);

7316

7317

for(char **arg = argv; *arg != NULL; arg++){

7318

free(*arg);

7319

}

7320

}

7321

7322

__attribute__((nonnull))

7323

static bool parse_arguments_devnull(int argc, char *argv[],

7324

const bool exit_failure,

7325

char **agent_directory,

7326

char **helper_directory,

7327

uid_t *const user,

7328

gid_t *const group,

7329

char **mandos_argz,

7330

size_t *mandos_argz_length){

7331

7332

FILE *real_stderr = stderr;

7333

FILE *devnull = fopen("/dev/null", "we");

7334

g_assert_nonnull(devnull);

7335

stderr = devnull;

7336

7337

const bool ret = parse_arguments(argc, argv, exit_failure,

7338

agent_directory,

7339

helper_directory, user, group,

7340

mandos_argz, mandos_argz_length);

7341

const error_t saved_errno = errno;

7342

7343

stderr = real_stderr;

7344

g_assert_cmpint(fclose(devnull), ==, 0);

7345

7346

errno = saved_errno;

7347

7348

return ret;

7349

}

7350

7351

static void test_parse_arguments_invalid(__attribute__((unused))

7352

test_fixture *fixture,

7353

__attribute__((unused))

7354

gconstpointer user_data){

7355

char *argv[] = {

7356

strdup("prgname"),

7357

strdup("--invalid"),

7358

NULL };

7359

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7360

7361

char *agent_directory = NULL;

7362

char *helper_directory = NULL;

7363

uid_t user = 0;

7364

gid_t group = 0;

7365

char *mandos_argz = NULL;

7366

size_t mandos_argz_length = 0;

7367

7368

g_assert_false(parse_arguments_devnull(argc, argv, false,

7369

&agent_directory,

7370

&helper_directory, &user,

7371

&group, &mandos_argz,

7372

&mandos_argz_length));

7373

7374

g_assert_true(errno == EINVAL);

7375

g_assert_null(agent_directory);

7376

g_assert_null(helper_directory);

7377

g_assert_null(mandos_argz);

7378

g_assert_true(mandos_argz_length == 0);

7379

7380

for(char **arg = argv; *arg != NULL; arg++){

7381

free(*arg);

7382

}

7383

}

7384

7385

static void test_parse_arguments_long_dir(__attribute__((unused))

7386

test_fixture *fixture,

7387

__attribute__((unused))

7388

gconstpointer user_data){

7389

char *argv[] = {

7390

strdup("prgname"),

7391

strdup("--agent-directory"),

7392

strdup("/tmp"),

7393

NULL };

7394

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7395

7396

__attribute__((cleanup(cleanup_string)))

7397

char *agent_directory = NULL;

7398

char *helper_directory = NULL;

7399

uid_t user = 0;

7400

gid_t group = 0;

7401

__attribute__((cleanup(cleanup_string)))

7402

char *mandos_argz = NULL;

7403

size_t mandos_argz_length = 0;

7404

7405

g_assert_true(parse_arguments(argc, argv, false, &agent_directory,

7406

&helper_directory, &user, &group,

7407

&mandos_argz, &mandos_argz_length));

7408

7409

g_assert_cmpstr(agent_directory, ==, "/tmp");

7410

g_assert_null(helper_directory);

7411

g_assert_true(user == 0);

7412

g_assert_true(group == 0);

7413

g_assert_null(mandos_argz);

7414

g_assert_true(mandos_argz_length == 0);

7415

7416

for(char **arg = argv; *arg != NULL; arg++){

7417

free(*arg);

7418

}

7419

}

7420

7421

static void test_parse_arguments_short_dir(__attribute__((unused))

7422

test_fixture *fixture,

7423

__attribute__((unused))

7424

gconstpointer user_data){

7425

char *argv[] = {

7426

strdup("prgname"),

7427

strdup("-d"),

7428

strdup("/tmp"),

7429

NULL };

7430

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7431

7432

__attribute__((cleanup(cleanup_string)))

7433

char *agent_directory = NULL;

7434

char *helper_directory = NULL;

7435

uid_t user = 0;

7436

gid_t group = 0;

7437

__attribute__((cleanup(cleanup_string)))

7438

char *mandos_argz = NULL;

7439

size_t mandos_argz_length = 0;

7440

7441

g_assert_true(parse_arguments(argc, argv, false, &agent_directory,

7442

&helper_directory, &user, &group,

7443

&mandos_argz, &mandos_argz_length));

7444

7445

g_assert_cmpstr(agent_directory, ==, "/tmp");

7446

g_assert_null(helper_directory);

7447

g_assert_true(user == 0);

7448

g_assert_true(group == 0);

7449

g_assert_null(mandos_argz);

7450

g_assert_true(mandos_argz_length == 0);

7451

7452

for(char **arg = argv; *arg != NULL; arg++){

7453

free(*arg);

7454

}

7455

}

7456

7457

static

7458

void test_parse_arguments_helper_directory(__attribute__((unused))

7459

test_fixture *fixture,

7460

__attribute__((unused))

7461

gconstpointer user_data){

7462

char *argv[] = {

7463

strdup("prgname"),

7464

strdup("--helper-directory"),

7465

strdup("/tmp"),

7466

NULL };

7467

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7468

7469

char *agent_directory = NULL;

7470

__attribute__((cleanup(cleanup_string)))

7471

char *helper_directory = NULL;

7472

uid_t user = 0;

7473

gid_t group = 0;

7474

__attribute__((cleanup(cleanup_string)))

7475

char *mandos_argz = NULL;

7476

size_t mandos_argz_length = 0;

7477

7478

g_assert_true(parse_arguments(argc, argv, false, &agent_directory,

7479

&helper_directory, &user, &group,

7480

&mandos_argz, &mandos_argz_length));

7481

7482

g_assert_cmpstr(helper_directory, ==, "/tmp");

7483

g_assert_null(agent_directory);

7484

g_assert_true(user == 0);

7485

g_assert_true(group == 0);

7486

g_assert_null(mandos_argz);

7487

g_assert_true(mandos_argz_length == 0);

7488

7489

for(char **arg = argv; *arg != NULL; arg++){

7490

free(*arg);

7491

}

7492

}

7493

7494

static

7495

void test_parse_arguments_plugin_helper_dir(__attribute__((unused))

7496

test_fixture *fixture,

7497

__attribute__((unused))

7498

gconstpointer user_data){

7499

char *argv[] = {

7500

strdup("prgname"),

7501

strdup("--plugin-helper-dir"),

7502

strdup("/tmp"),

7503

NULL };

7504

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7505

7506

char *agent_directory = NULL;

7507

__attribute__((cleanup(cleanup_string)))

7508

char *helper_directory = NULL;

7509

uid_t user = 0;

7510

gid_t group = 0;

7511

__attribute__((cleanup(cleanup_string)))

7512

char *mandos_argz = NULL;

7513

size_t mandos_argz_length = 0;

7514

7515

g_assert_true(parse_arguments(argc, argv, false, &agent_directory,

7516

&helper_directory, &user, &group,

7517

&mandos_argz, &mandos_argz_length));

7518

7519

g_assert_cmpstr(helper_directory, ==, "/tmp");

7520

g_assert_null(agent_directory);

7521

g_assert_true(user == 0);

7522

g_assert_true(group == 0);

7523

g_assert_null(mandos_argz);

7524

g_assert_true(mandos_argz_length == 0);

7525

7526

for(char **arg = argv; *arg != NULL; arg++){

7527

free(*arg);

7528

}

7529

}

7530

7531

static void test_parse_arguments_user(__attribute__((unused))

7532

test_fixture *fixture,

7533

__attribute__((unused))

7534

gconstpointer user_data){

7535

char *argv[] = {

7536

strdup("prgname"),

7537

strdup("--user"),

7538

strdup("1000"),

7539

NULL };

7540

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7541

7542

char *agent_directory = NULL;

7543

__attribute__((cleanup(cleanup_string)))

7544

char *helper_directory = NULL;

7545

uid_t user = 0;

7546

gid_t group = 0;

7547

__attribute__((cleanup(cleanup_string)))

7548

char *mandos_argz = NULL;

7549

size_t mandos_argz_length = 0;

7550

7551

g_assert_true(parse_arguments(argc, argv, false, &agent_directory,

7552

&helper_directory, &user, &group,

7553

&mandos_argz, &mandos_argz_length));

7554

7555

g_assert_null(helper_directory);

7556

g_assert_null(agent_directory);

7557

g_assert_cmpuint((unsigned int)user, ==, 1000);

7558

g_assert_true(group == 0);

7559

g_assert_null(mandos_argz);

7560

g_assert_true(mandos_argz_length == 0);

7561

7562

for(char **arg = argv; *arg != NULL; arg++){

7563

free(*arg);

7564

}

7565

}

7566

7567

static void test_parse_arguments_user_invalid(__attribute__((unused))

7568

test_fixture *fixture,

7569

__attribute__((unused))

7570

gconstpointer

7571

user_data){

7572

char *argv[] = {

7573

strdup("prgname"),

7574

strdup("--user"),

7575

strdup("invalid"),

7576

NULL };

7577

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7578

7579

char *agent_directory = NULL;

7580

__attribute__((cleanup(cleanup_string)))

7581

char *helper_directory = NULL;

7582

uid_t user = 0;

7583

gid_t group = 0;

7584

__attribute__((cleanup(cleanup_string)))

7585

char *mandos_argz = NULL;

7586

size_t mandos_argz_length = 0;

7587

7588

g_assert_false(parse_arguments_devnull(argc, argv, false,

7589

&agent_directory,

7590

&helper_directory, &user,

7591

&group, &mandos_argz,

7592

&mandos_argz_length));

7593

7594

g_assert_null(helper_directory);

7595

g_assert_null(agent_directory);

7596

g_assert_cmpuint((unsigned int)user, ==, 0);

7597

g_assert_true(group == 0);

7598

g_assert_null(mandos_argz);

7599

g_assert_true(mandos_argz_length == 0);

7600

7601

for(char **arg = argv; *arg != NULL; arg++){

7602

free(*arg);

7603

}

7604

}

7605

7606

static

7607

void test_parse_arguments_user_zero_invalid(__attribute__((unused))

7608

test_fixture *fixture,

7609

__attribute__((unused))

7610

gconstpointer user_data){

7611

char *argv[] = {

7612

strdup("prgname"),

7613

strdup("--user"),

7614

strdup("0"),

7615

NULL };

7616

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7617

7618

char *agent_directory = NULL;

7619

__attribute__((cleanup(cleanup_string)))

7620

char *helper_directory = NULL;

7621

uid_t user = 0;

7622

gid_t group = 0;

7623

__attribute__((cleanup(cleanup_string)))

7624

char *mandos_argz = NULL;

7625

size_t mandos_argz_length = 0;

7626

7627

g_assert_false(parse_arguments_devnull(argc, argv, false,

7628

&agent_directory,

7629

&helper_directory, &user,

7630

&group, &mandos_argz,

7631

&mandos_argz_length));

7632

7633

g_assert_null(helper_directory);

7634

g_assert_null(agent_directory);

7635

g_assert_cmpuint((unsigned int)user, ==, 0);

7636

g_assert_true(group == 0);

7637

g_assert_null(mandos_argz);

7638

g_assert_true(mandos_argz_length == 0);

7639

7640

for(char **arg = argv; *arg != NULL; arg++){

7641

free(*arg);

7642

}

7643

}

7644

7645

static void test_parse_arguments_group(__attribute__((unused))

7646

test_fixture *fixture,

7647

__attribute__((unused))

7648

gconstpointer user_data){

7649

char *argv[] = {

7650

strdup("prgname"),

7651

strdup("--group"),

7652

strdup("1000"),

7653

NULL };

7654

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7655

7656

char *agent_directory = NULL;

7657

__attribute__((cleanup(cleanup_string)))

7658

char *helper_directory = NULL;

7659

uid_t user = 0;

7660

gid_t group = 0;

7661

__attribute__((cleanup(cleanup_string)))

7662

char *mandos_argz = NULL;

7663

size_t mandos_argz_length = 0;

7664

7665

g_assert_true(parse_arguments(argc, argv, false, &agent_directory,

7666

&helper_directory, &user, &group,

7667

&mandos_argz, &mandos_argz_length));

7668

7669

g_assert_null(helper_directory);

7670

g_assert_null(agent_directory);

7671

g_assert_true(user == 0);

7672

g_assert_cmpuint((unsigned int)group, ==, 1000);

7673

g_assert_null(mandos_argz);

7674

g_assert_true(mandos_argz_length == 0);

7675

7676

for(char **arg = argv; *arg != NULL; arg++){

7677

free(*arg);

7678

}

7679

}

7680

7681

static void test_parse_arguments_group_invalid(__attribute__((unused))

7682

test_fixture *fixture,

7683

__attribute__((unused))

7684

gconstpointer

7685

user_data){

7686

char *argv[] = {

7687

strdup("prgname"),

7688

strdup("--group"),

7689

strdup("invalid"),

7690

NULL };

7691

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7692

7693

char *agent_directory = NULL;

7694

__attribute__((cleanup(cleanup_string)))

7695

char *helper_directory = NULL;

7696

uid_t user = 0;

7697

gid_t group = 0;

7698

__attribute__((cleanup(cleanup_string)))

7699

char *mandos_argz = NULL;

7700

size_t mandos_argz_length = 0;

7701

7702

g_assert_false(parse_arguments_devnull(argc, argv, false,

7703

&agent_directory,

7704

&helper_directory, &user,

7705

&group, &mandos_argz,

7706

&mandos_argz_length));

7707

7708

g_assert_null(helper_directory);

7709

g_assert_null(agent_directory);

7710

g_assert_true(user == 0);

7711

g_assert_true(group == 0);

7712

g_assert_null(mandos_argz);

7713

g_assert_true(mandos_argz_length == 0);

7714

7715

for(char **arg = argv; *arg != NULL; arg++){

7716

free(*arg);

7717

}

7718

}

7719

7720

static

7721

void test_parse_arguments_group_zero_invalid(__attribute__((unused))

7722

test_fixture *fixture,

7723

__attribute__((unused))

7724

gconstpointer user_data){

7725

char *argv[] = {

7726

strdup("prgname"),

7727

strdup("--group"),

7728

strdup("0"),

7729

NULL };

7730

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7731

7732

char *agent_directory = NULL;

7733

__attribute__((cleanup(cleanup_string)))

7734

char *helper_directory = NULL;

7735

uid_t user = 0;

7736

gid_t group = 0;

7737

__attribute__((cleanup(cleanup_string)))

7738

char *mandos_argz = NULL;

7739

size_t mandos_argz_length = 0;

7740

7741

g_assert_false(parse_arguments_devnull(argc, argv, false,

7742

&agent_directory,

7743

&helper_directory, &user,

7744

&group, &mandos_argz,

7745

&mandos_argz_length));

7746

7747

g_assert_null(helper_directory);

7748

g_assert_null(agent_directory);

7749

g_assert_cmpuint((unsigned int)group, ==, 0);

7750

g_assert_true(group == 0);

7751

g_assert_null(mandos_argz);

7752

g_assert_true(mandos_argz_length == 0);

7753

7754

for(char **arg = argv; *arg != NULL; arg++){

7755

free(*arg);

7756

}

7757

}

7758

7759

static void test_parse_arguments_mandos_noargs(__attribute__((unused))

7760

test_fixture *fixture,

7761

__attribute__((unused))

7762

gconstpointer

7763

user_data){

7764

char *argv[] = {

7765

strdup("prgname"),

7766

strdup("mandos-client"),

7767

NULL };

7768

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7769

7770

__attribute__((cleanup(cleanup_string)))

7771

char *agent_directory = NULL;

7772

__attribute__((cleanup(cleanup_string)))

7773

char *helper_directory = NULL;

7774

uid_t user = 0;

7775

gid_t group = 0;

7776

__attribute__((cleanup(cleanup_string)))

7777

char *mandos_argz = NULL;

7778

size_t mandos_argz_length = 0;

7779

7780

g_assert_true(parse_arguments(argc, argv, false, &agent_directory,

7781

&helper_directory, &user, &group,

7782

&mandos_argz, &mandos_argz_length));

7783

7784

g_assert_null(agent_directory);

7785

g_assert_null(helper_directory);

7786

g_assert_true(user == 0);

7787

g_assert_true(group == 0);

7788

g_assert_cmpstr(mandos_argz, ==, "mandos-client");

7789

g_assert_cmpuint((unsigned int)argz_count(mandos_argz,

7790

mandos_argz_length),

7791

==, 1);

7792

7793

for(char **arg = argv; *arg != NULL; arg++){

7794

free(*arg);

7795

}

7796

}

7797

7798

static void test_parse_arguments_mandos_args(__attribute__((unused))

7799

test_fixture *fixture,

7800

__attribute__((unused))

7801

gconstpointer user_data){

7802

char *argv[] = {

7803

strdup("prgname"),

7804

strdup("mandos-client"),

7805

strdup("one"),

7806

strdup("two"),

7807

strdup("three"),

7808

NULL };

7809

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7810

7811

__attribute__((cleanup(cleanup_string)))

7812

char *agent_directory = NULL;

7813

__attribute__((cleanup(cleanup_string)))

7814

char *helper_directory = NULL;

7815

uid_t user = 0;

7816

gid_t group = 0;

7817

__attribute__((cleanup(cleanup_string)))

7818

char *mandos_argz = NULL;

7819

size_t mandos_argz_length = 0;

7820

7821

g_assert_true(parse_arguments(argc, argv, false, &agent_directory,

7822

&helper_directory, &user, &group,

7823

&mandos_argz, &mandos_argz_length));

7824

7825

g_assert_null(agent_directory);

7826

g_assert_null(helper_directory);

7827

g_assert_true(user == 0);

7828

g_assert_true(group == 0);

7829

char *marg = mandos_argz;

7830

g_assert_cmpstr(marg, ==, "mandos-client");

7831

marg = argz_next(mandos_argz, mandos_argz_length, marg);

7832

g_assert_cmpstr(marg, ==, "one");

7833

marg = argz_next(mandos_argz, mandos_argz_length, marg);

7834

g_assert_cmpstr(marg, ==, "two");

7835

marg = argz_next(mandos_argz, mandos_argz_length, marg);

7836

g_assert_cmpstr(marg, ==, "three");

7837

g_assert_cmpuint((unsigned int)argz_count(mandos_argz,

7838

mandos_argz_length),

7839

==, 4);

7840

7841

for(char **arg = argv; *arg != NULL; arg++){

7842

free(*arg);

7843

}

7844

}

7845

7846

static void test_parse_arguments_all_args(__attribute__((unused))

7847

test_fixture *fixture,

7848

__attribute__((unused))

7849

gconstpointer user_data){

7850

char *argv[] = {

7851

strdup("prgname"),

7852

strdup("--agent-directory"),

7853

strdup("/tmp"),

7854

strdup("--helper-directory"),

7855

strdup("/var/tmp"),

7856

strdup("--user"),

7857

strdup("1"),

7858

strdup("--group"),

7859

strdup("2"),

7860

strdup("mandos-client"),

7861

strdup("one"),

7862

strdup("two"),

7863

strdup("three"),

7864

NULL };

7865

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7866

7867

__attribute__((cleanup(cleanup_string)))

7868

char *agent_directory = NULL;

7869

__attribute__((cleanup(cleanup_string)))

7870

char *helper_directory = NULL;

7871

uid_t user = 0;

7872

gid_t group = 0;

7873

__attribute__((cleanup(cleanup_string)))

7874

char *mandos_argz = NULL;

7875

size_t mandos_argz_length = 0;

7876

7877

g_assert_true(parse_arguments(argc, argv, false, &agent_directory,

7878

&helper_directory, &user, &group,

7879

&mandos_argz, &mandos_argz_length));

7880

7881

g_assert_cmpstr(agent_directory, ==, "/tmp");

7882

g_assert_cmpstr(helper_directory, ==, "/var/tmp");

7883

g_assert_true(user == 1);

7884

g_assert_true(group == 2);

7885

char *marg = mandos_argz;

7886

g_assert_cmpstr(marg, ==, "mandos-client");

7887

marg = argz_next(mandos_argz, mandos_argz_length, marg);

7888

g_assert_cmpstr(marg, ==, "one");

7889

marg = argz_next(mandos_argz, mandos_argz_length, marg);

7890

g_assert_cmpstr(marg, ==, "two");

7891

marg = argz_next(mandos_argz, mandos_argz_length, marg);

7892

g_assert_cmpstr(marg, ==, "three");

7893

g_assert_cmpuint((unsigned int)argz_count(mandos_argz,

7894

mandos_argz_length),

7895

==, 4);

7896

7897

for(char **arg = argv; *arg != NULL; arg++){

7898

free(*arg);

7899

}

7900

}

7901

7902

static void test_parse_arguments_mixed(__attribute__((unused))

7903

test_fixture *fixture,

7904

__attribute__((unused))

7905

gconstpointer user_data){

7906

char *argv[] = {

7907

strdup("prgname"),

7908

strdup("mandos-client"),

7909

strdup("--user"),

7910

strdup("1"),

7911

strdup("one"),

7912

strdup("--agent-directory"),

7913

strdup("/tmp"),

7914

strdup("two"),

7915

strdup("three"),

7916

strdup("--helper-directory=/var/tmp"),

7917

NULL };

7918

const int argc = (sizeof(argv) / sizeof(char *)) - 1;

7919

7920

__attribute__((cleanup(cleanup_string)))

7921

char *agent_directory = NULL;

7922

__attribute__((cleanup(cleanup_string)))

7923

char *helper_directory = NULL;

7924

uid_t user = 0;

7925

gid_t group = 0;

7926

__attribute__((cleanup(cleanup_string)))

7927

char *mandos_argz = NULL;

7928

size_t mandos_argz_length = 0;

7929

7930

g_assert_true(parse_arguments(argc, argv, false, &agent_directory,

7931

&helper_directory, &user, &group,

7932

&mandos_argz, &mandos_argz_length));

7933

7934

g_assert_cmpstr(agent_directory, ==, "/tmp");

7935

g_assert_cmpstr(helper_directory, ==, "/var/tmp");

7936

g_assert_true(user == 1);

7937

g_assert_true(group == 0);

7938

char *marg = mandos_argz;

7939

g_assert_cmpstr(marg, ==, "mandos-client");

7940

marg = argz_next(mandos_argz, mandos_argz_length, marg);

7941

g_assert_cmpstr(marg, ==, "one");

7942

marg = argz_next(mandos_argz, mandos_argz_length, marg);

7943

g_assert_cmpstr(marg, ==, "two");

7944

marg = argz_next(mandos_argz, mandos_argz_length, marg);

7945

g_assert_cmpstr(marg, ==, "three");

7946

g_assert_cmpuint((unsigned int)argz_count(mandos_argz,

7947

mandos_argz_length),

7948

==, 4);

7949

7950

for(char **arg = argv; *arg != NULL; arg++){

7951

free(*arg);

7952

}

7953

}

7954

7955

/* End of tests section */

7956

7957

/* Test boilerplate section; New tests should be added to the test

7958

suite definition here, in the "run_tests" function.

7959

7960

Finally, this section also contains the should_only_run_tests()

7961

function used by main() for deciding if tests should be run or to

7962

start normally. */

7963

7964

__attribute__((cold))

7965

static bool run_tests(int argc, char *argv[]){

7966

g_test_init(&argc, &argv, NULL);

7967

7968

/* A macro to add a test with no setup or teardown functions */

7969

#define test_add(testpath, testfunc) \

7970

do { \

7971

g_test_add((testpath), test_fixture, NULL, NULL, \

7972

(testfunc), NULL); \

7973

} while(false)

7974

7975

/* Test the signal-related functions first, since some other tests

7976

depend on these functions in their setups and teardowns */

7977

test_add("/signal-handling/setup", test_setup_signal_handler);

7978

test_add("/signal-handling/restore", test_restore_signal_handler);

7979

test_add("/signal-handling/block", test_block_sigchld);

7980

test_add("/signal-handling/restore-sigmask", test_restore_sigmask);

7981

7982

/* Regular non-signal-related tests; these use no setups or

7983

teardowns */

7984

test_add("/parse_arguments/noargs", test_parse_arguments_noargs);

7985

test_add("/parse_arguments/invalid", test_parse_arguments_invalid);

7986

test_add("/parse_arguments/long-dir",

7987

test_parse_arguments_long_dir);

7988

test_add("/parse_arguments/short-dir",

7989

test_parse_arguments_short_dir);

7990

test_add("/parse_arguments/helper-directory",

7991

test_parse_arguments_helper_directory);

7992

test_add("/parse_arguments/plugin-helper-dir",

7993

test_parse_arguments_plugin_helper_dir);

7994

test_add("/parse_arguments/user", test_parse_arguments_user);

7995

test_add("/parse_arguments/user-invalid",

7996

test_parse_arguments_user_invalid);

7997

test_add("/parse_arguments/user-zero-invalid",

7998

test_parse_arguments_user_zero_invalid);

7999

test_add("/parse_arguments/group", test_parse_arguments_group);

8000

test_add("/parse_arguments/group-invalid",

8001

test_parse_arguments_group_invalid);

8002

test_add("/parse_arguments/group-zero-invalid",

8003

test_parse_arguments_group_zero_invalid);

8004

test_add("/parse_arguments/mandos-noargs",

8005

test_parse_arguments_mandos_noargs);

8006

test_add("/parse_arguments/mandos-args",

8007

test_parse_arguments_mandos_args);

8008

test_add("/parse_arguments/all-args",

8009

test_parse_arguments_all_args);

8010

test_add("/parse_arguments/mixed", test_parse_arguments_mixed);

8011

test_add("/queue/create", test_create_queue);

8012

test_add("/queue/add", test_add_to_queue);

8013

test_add("/queue/add/overflow", test_add_to_queue_overflow);

8014

test_add("/queue/has_question/empty",

8015

test_queue_has_question_empty);

8016

test_add("/queue/has_question/false",

8017

test_queue_has_question_false);

8018

test_add("/queue/has_question/true", test_queue_has_question_true);

8019

test_add("/queue/has_question/false2",

8020

test_queue_has_question_false2);

8021

test_add("/queue/has_question/true2",

8022

test_queue_has_question_true2);

8023

test_add("/buffer/cleanup", test_cleanup_buffer);

8024

test_add("/string_set/net-set-contains-nothing",

8025

test_string_set_new_set_contains_nothing);

8026

test_add("/string_set/with-added-string-contains-it",

8027

test_string_set_with_added_string_contains_it);

8028

test_add("/string_set/cleared-does-not-contain-string",

8029

test_string_set_cleared_does_not_contain_str);

8030

test_add("/string_set/swap/one-with-empty",

8031

test_string_set_swap_one_with_empty);

8032

test_add("/string_set/swap/empty-with-one",

8033

test_string_set_swap_empty_with_one);

8034

test_add("/string_set/swap/one-with-one",

8035

test_string_set_swap_one_with_one);

8036

8037

/* A macro to add a test using the setup and teardown functions */

8038

#define test_add_st(path, func) \

8039

do { \

8040

g_test_add((path), test_fixture, NULL, test_setup, (func), \

8041

test_teardown); \

8042

} while(false)

8043

8044

/* Signal-related tests; these use setups and teardowns which

8045

establish, during each test run, a signal handler for, and a

8046

signal mask blocking, the SIGCHLD signal, just like main() */

8047

test_add_st("/wait_for_event/timeout", test_wait_for_event_timeout);

8048

test_add_st("/wait_for_event/event", test_wait_for_event_event);

8049

test_add_st("/wait_for_event/sigchld", test_wait_for_event_sigchld);

8050

test_add_st("/run_queue/zeroes-next-run",

8051

test_run_queue_zeroes_next_run);

8052

test_add_st("/run_queue/clears-cancelled_filenames",

8053

test_run_queue_clears_cancelled_filenames);

8054

test_add_st("/run_queue/skips-cancelled-filenames",

8055

test_run_queue_skips_cancelled_filenames);

8056

test_add_st("/run_queue/one-task", test_run_queue_one_task);

8057

test_add_st("/run_queue/two-tasks", test_run_queue_two_tasks);

8058

test_add_st("/run_queue/two-tasks/quit",

8059

test_run_queue_two_tasks_quit);

8060

test_add_st("/run_queue/two-tasks-cleanup",

8061

test_run_queue_two_tasks_cleanup);

8062

test_add_st("/task-creators/start_mandos_client",

8063

test_start_mandos_client);

8064

test_add_st("/task-creators/start_mandos_client/execv",

8065

test_start_mandos_client_execv);

8066

test_add_st("/task-creators/start_mandos_client/suid/euid",

8067

test_start_mandos_client_suid_euid);

8068

test_add_st("/task-creators/start_mandos_client/suid/egid",

8069

test_start_mandos_client_suid_egid);

8070

test_add_st("/task-creators/start_mandos_client/suid/ruid",

8071

test_start_mandos_client_suid_ruid);

8072

test_add_st("/task-creators/start_mandos_client/suid/rgid",

8073

test_start_mandos_client_suid_rgid);

8074

test_add_st("/task-creators/start_mandos_client/read",

8075

test_start_mandos_client_read);

8076

test_add_st("/task-creators/start_mandos_client/helper-directory",

8077

test_start_mandos_client_helper_directory);

8078

test_add_st("/task-creators/start_mandos_client/sigmask",

8079

test_start_mandos_client_sigmask);

8080

test_add_st("/task/wait_for_mandos_client_exit/badpid",

8081

test_wait_for_mandos_client_exit_badpid);

8082

test_add_st("/task/wait_for_mandos_client_exit/noexit",

8083

test_wait_for_mandos_client_exit_noexit);

8084

test_add_st("/task/wait_for_mandos_client_exit/success",

8085

test_wait_for_mandos_client_exit_success);

8086

test_add_st("/task/wait_for_mandos_client_exit/failure",

8087

test_wait_for_mandos_client_exit_failure);

8088

test_add_st("/task/wait_for_mandos_client_exit/killed",

8089

test_wait_for_mandos_client_exit_killed);

8090

test_add_st("/task/read_mandos_client_output/readerror",

8091

test_read_mandos_client_output_readerror);

8092

test_add_st("/task/read_mandos_client_output/nodata",

8093

test_read_mandos_client_output_nodata);

8094

test_add_st("/task/read_mandos_client_output/eof",

8095

test_read_mandos_client_output_eof);

8096

test_add_st("/task/read_mandos_client_output/once",

8097

test_read_mandos_client_output_once);

8098

test_add_st("/task/read_mandos_client_output/malloc",

8099

test_read_mandos_client_output_malloc);

8100

test_add_st("/task/read_mandos_client_output/append",

8101

test_read_mandos_client_output_append);

8102

test_add_st("/task-creators/add_inotify_dir_watch",

8103

test_add_inotify_dir_watch);

8104

test_add_st("/task-creators/add_inotify_dir_watch/fail",

8105

test_add_inotify_dir_watch_fail);

8106

test_add_st("/task-creators/add_inotify_dir_watch/not-a-directory",

8107

test_add_inotify_dir_watch_nondir);

8108

test_add_st("/task-creators/add_inotify_dir_watch/EAGAIN",

8109

test_add_inotify_dir_watch_EAGAIN);

8110

test_add_st("/task-creators/add_inotify_dir_watch/IN_CLOSE_WRITE",

8111

test_add_inotify_dir_watch_IN_CLOSE_WRITE);

8112

test_add_st("/task-creators/add_inotify_dir_watch/IN_MOVED_TO",

8113

test_add_inotify_dir_watch_IN_MOVED_TO);

8114

test_add_st("/task-creators/add_inotify_dir_watch/IN_MOVED_FROM",

8115

test_add_inotify_dir_watch_IN_MOVED_FROM);

8116

test_add_st("/task-creators/add_inotify_dir_watch/IN_EXCL_UNLINK",

8117

test_add_inotify_dir_watch_IN_EXCL_UNLINK);

8118

test_add_st("/task-creators/add_inotify_dir_watch/IN_DELETE",

8119

test_add_inotify_dir_watch_IN_DELETE);

8120

test_add_st("/task/read_inotify_event/readerror",

8121

test_read_inotify_event_readerror);

8122

test_add_st("/task/read_inotify_event/bad-epoll",

8123

test_read_inotify_event_bad_epoll);

8124

test_add_st("/task/read_inotify_event/nodata",

8125

test_read_inotify_event_nodata);

8126

test_add_st("/task/read_inotify_event/eof",

8127

test_read_inotify_event_eof);

8128

test_add_st("/task/read_inotify_event/IN_CLOSE_WRITE",

8129

test_read_inotify_event_IN_CLOSE_WRITE);

8130

test_add_st("/task/read_inotify_event/IN_MOVED_TO",

8131

test_read_inotify_event_IN_MOVED_TO);

8132

test_add_st("/task/read_inotify_event/IN_MOVED_FROM",

8133

test_read_inotify_event_IN_MOVED_FROM);

8134

test_add_st("/task/read_inotify_event/IN_DELETE",

8135

test_read_inotify_event_IN_DELETE);

8136

test_add_st("/task/read_inotify_event/IN_CLOSE_WRITE/badname",

8137

test_read_inotify_event_IN_CLOSE_WRITE_badname);

8138

test_add_st("/task/read_inotify_event/IN_MOVED_TO/badname",

8139

test_read_inotify_event_IN_MOVED_TO_badname);

8140

test_add_st("/task/read_inotify_event/IN_MOVED_FROM/badname",

8141

test_read_inotify_event_IN_MOVED_FROM_badname);

8142

test_add_st("/task/read_inotify_event/IN_DELETE/badname",

8143

test_read_inotify_event_IN_DELETE_badname);

8144

test_add_st("/task/open_and_parse_question/ENOENT",

8145

test_open_and_parse_question_ENOENT);

8146

test_add_st("/task/open_and_parse_question/EIO",

8147

test_open_and_parse_question_EIO);

8148

test_add_st("/task/open_and_parse_question/parse-error",

8149

test_open_and_parse_question_parse_error);

8150

test_add_st("/task/open_and_parse_question/nosocket",

8151

test_open_and_parse_question_nosocket);

8152

test_add_st("/task/open_and_parse_question/badsocket",

8153

test_open_and_parse_question_badsocket);

8154

test_add_st("/task/open_and_parse_question/nopid",

8155

test_open_and_parse_question_nopid);

8156

test_add_st("/task/open_and_parse_question/badpid",

8157

test_open_and_parse_question_badpid);

8158

test_add_st("/task/open_and_parse_question/noexist_pid",

8159

test_open_and_parse_question_noexist_pid);

8160

test_add_st("/task/open_and_parse_question/no-notafter",

8161

test_open_and_parse_question_no_notafter);

8162

test_add_st("/task/open_and_parse_question/bad-notafter",

8163

test_open_and_parse_question_bad_notafter);

8164

test_add_st("/task/open_and_parse_question/notafter-0",

8165

test_open_and_parse_question_notafter_0);

8166

test_add_st("/task/open_and_parse_question/notafter-1",

8167

test_open_and_parse_question_notafter_1);

8168

test_add_st("/task/open_and_parse_question/notafter-1-1",

8169

test_open_and_parse_question_notafter_1_1);

8170

test_add_st("/task/open_and_parse_question/notafter-1-2",

8171

test_open_and_parse_question_notafter_1_2);

8172

test_add_st("/task/open_and_parse_question/equal-notafter",

8173

test_open_and_parse_question_equal_notafter);

8174

test_add_st("/task/open_and_parse_question/late-notafter",

8175

test_open_and_parse_question_late_notafter);

8176

test_add_st("/task/cancel_old_question/0-1-2",

8177

test_cancel_old_question_0_1_2);

8178

test_add_st("/task/cancel_old_question/0-2-1",

8179

test_cancel_old_question_0_2_1);

8180

test_add_st("/task/cancel_old_question/1-2-3",

8181

test_cancel_old_question_1_2_3);

8182

test_add_st("/task/cancel_old_question/1-3-2",

8183

test_cancel_old_question_1_3_2);

8184

test_add_st("/task/cancel_old_question/2-1-3",

8185

test_cancel_old_question_2_1_3);

8186

test_add_st("/task/cancel_old_question/2-3-1",

8187

test_cancel_old_question_2_3_1);

8188

test_add_st("/task/cancel_old_question/3-1-2",

8189

test_cancel_old_question_3_1_2);

8190

test_add_st("/task/cancel_old_question/3-2-1",

8191

test_cancel_old_question_3_2_1);

8192

test_add_st("/task/connect_question_socket/name-too-long",

8193

test_connect_question_socket_name_too_long);

8194

test_add_st("/task/connect_question_socket/connect-fail",

8195

test_connect_question_socket_connect_fail);

8196

test_add_st("/task/connect_question_socket/bad-epoll",

8197

test_connect_question_socket_bad_epoll);

8198

test_add_st("/task/connect_question_socket/usable",

8199

test_connect_question_socket_usable);

8200

test_add_st("/task/send_password_to_socket/client-not-exited",

8201

test_send_password_to_socket_client_not_exited);

8202

test_add_st("/task/send_password_to_socket/password-not-read",

8203

test_send_password_to_socket_password_not_read);

8204

test_add_st("/task/send_password_to_socket/EMSGSIZE",

8205

test_send_password_to_socket_EMSGSIZE);

8206

test_add_st("/task/send_password_to_socket/retry",

8207

test_send_password_to_socket_retry);

8208

test_add_st("/task/send_password_to_socket/bad-epoll",

8209

test_send_password_to_socket_bad_epoll);

8210

test_add_st("/task/send_password_to_socket/null-password",

8211

test_send_password_to_socket_null_password);

8212

test_add_st("/task/send_password_to_socket/empty-password",

8213

test_send_password_to_socket_empty_password);

8214

test_add_st("/task/send_password_to_socket/empty-str-password",

8215

test_send_password_to_socket_empty_str_pass);

8216

test_add_st("/task/send_password_to_socket/text-password",

8217

test_send_password_to_socket_text_password);

8218

test_add_st("/task/send_password_to_socket/binary-password",

8219

test_send_password_to_socket_binary_password);

8220

test_add_st("/task/send_password_to_socket/nuls-in-password",

8221

test_send_password_to_socket_nuls_in_password);

8222

test_add_st("/task-creators/add_existing_questions/ENOENT",

8223

test_add_existing_questions_ENOENT);

8224

test_add_st("/task-creators/add_existing_questions/no-questions",

8225

test_add_existing_questions_no_questions);

8226

test_add_st("/task-creators/add_existing_questions/one-question",

8227

test_add_existing_questions_one_question);

8228

test_add_st("/task-creators/add_existing_questions/two-questions",

8229

test_add_existing_questions_two_questions);

8230

test_add_st("/task-creators/add_existing_questions/non-questions",

8231

test_add_existing_questions_non_questions);

8232

test_add_st("/task-creators/add_existing_questions/both-types",

8233

test_add_existing_questions_both_types);

8234

8235

return g_test_run() == 0;

8236

}

8237

8238

static bool should_only_run_tests(int *argc_p, char **argv_p[]){

8239

GOptionContext *context = g_option_context_new("");

8240

8241

g_option_context_set_help_enabled(context, FALSE);

8242

g_option_context_set_ignore_unknown_options(context, TRUE);

8243

8244

gboolean should_run_tests = FALSE;

8245

GOptionEntry entries[] = {

8246

{ "test", 0, 0, G_OPTION_ARG_NONE,

8247

&should_run_tests, "Run tests", NULL },

8248

{ NULL }

8249

};

8250

g_option_context_add_main_entries(context, entries, NULL);

8251

8252

GError *error = NULL;

8253

8254

if(g_option_context_parse(context, argc_p, argv_p, &error) != TRUE){

8255

g_option_context_free(context);

8256

g_error("Failed to parse options: %s", error->message);

8257

}

8258

8259

g_option_context_free(context);

8260

return should_run_tests != FALSE;

8261

}

8262

8263

/*

8264

Local Variables:

8265

run-tests:

8266

(lambda ()

8267

(if (not (funcall run-tests-in-test-buffer default-directory))

8268

(funcall show-test-buffer-in-test-window)

8269

(funcall remove-test-window)))

8270

run-tests-in-test-buffer:

8271

(lambda (dir)

8272

(with-current-buffer (get-buffer-create "*Test*")

8273

(setq buffer-read-only nil

8274

default-directory dir)

8275

(erase-buffer)

8276

(compilation-mode))

8277

(let ((process-result

8278

(let ((inhibit-read-only t))

8279

(process-file-shell-command

8280

(funcall get-command-line) nil "*Test*"))))

8281

(and (numberp process-result)

8282

(= process-result 0))))

8283

get-command-line:

8284

(lambda ()

8285

(let*

8286

((build-directory

8287

(funcall find-build-directory (buffer-file-name)))

8288

(local-build-directory

8289

(if (fboundp 'file-local-name)

8290

(file-local-name build-directory)

8291

(or (file-remote-p build-directory 'localname)

8292

build-directory)))

8293

(command

8294

(file-relative-name (file-name-sans-extension

8295

(buffer-file-name)) build-directory))

8296

(qbdir (shell-quote-argument local-build-directory))

8297

(qcmd (shell-quote-argument command)))

8298

(format (concat "cd %s && CFLAGS=-Werror make --silent %s"

8299

" && %s --test --verbose") qbdir qcmd qcmd)))

8300

find-build-directory:

8301

(lambda (try-directory &optional base-directory)

8302

(let ((base-directory (or base-directory try-directory)))

8303

(cond ((equal try-directory "/") base-directory)

8304

((file-readable-p

8305

(concat (file-name-as-directory try-directory)

8306

"Makefile")) try-directory)

8307

((funcall find-build-directory

8308

(directory-file-name (file-name-directory

8309

try-directory))

8310

base-directory)))))

8311

show-test-buffer-in-test-window:

8312

(lambda ()

8313

(when (not (get-buffer-window-list "*Test*"))

8314

(setq next-error-last-buffer (get-buffer "*Test*"))

8315

(let* ((side (if (>= (window-width) 146) 'right 'bottom))

8316

(display-buffer-overriding-action

8317

`((display-buffer-in-side-window) (side . ,side)

8318

(window-height . fit-window-to-buffer)

8319

(window-width . fit-window-to-buffer))))

8320

(display-buffer "*Test*"))))

8321

remove-test-window:

8322

(lambda ()

8323

(let ((test-window (get-buffer-window "*Test*")))

8324

(if test-window (delete-window test-window))))

8325

eval: (add-hook 'after-save-hook run-tests 90 t)

8326

End:

8327

*/