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

  • Committer: Teddy Hogeborn
  • Date: 2019-11-03 19:17:57 UTC
  • Revision ID: teddy@recompile.se-20191103191757-1hdpp0u5fxa8iumo
INSTALL: Add "-" argument to "su" invocations.

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#include <error.h>              /* error() */
49
49
#include <sysexits.h>           /* EX_USAGE, EX_OSERR, EX_OSFILE */
50
50
#include <errno.h>              /* errno, error_t, EACCES,
51
 
                                   ENAMETOOLONG, ENOENT, EEXIST,
52
 
                                   ECHILD, EPERM, ENOMEM, EAGAIN,
53
 
                                   EINTR, ENOBUFS, EADDRINUSE,
 
51
                                   ENAMETOOLONG, ENOENT, ENOTDIR,
 
52
                                   EEXIST, ECHILD, EPERM, ENOMEM,
 
53
                                   EAGAIN, EINTR, ENOBUFS, EADDRINUSE,
54
54
                                   ECONNREFUSED, ECONNRESET,
55
55
                                   ETOOMANYREFS, EMSGSIZE, EBADF,
56
56
                                   EINVAL */
83
83
#include <sys/mman.h>           /* munlock(), mlock() */
84
84
#include <fcntl.h>              /* O_CLOEXEC, O_NONBLOCK, fcntl(),
85
85
                                   F_GETFD, F_GETFL, FD_CLOEXEC,
86
 
                                   open(), O_WRONLY, O_RDONLY */
 
86
                                   open(), O_WRONLY, O_NOCTTY,
 
87
                                   O_RDONLY, O_NOFOLLOW */
87
88
#include <sys/wait.h>           /* waitpid(), WNOHANG, WIFEXITED(),
88
89
                                   WEXITSTATUS() */
89
90
#include <limits.h>             /* PIPE_BUF, NAME_MAX, INT_MAX */
90
91
#include <sys/inotify.h>        /* inotify_init1(), IN_NONBLOCK,
91
92
                                   IN_CLOEXEC, inotify_add_watch(),
92
93
                                   IN_CLOSE_WRITE, IN_MOVED_TO,
93
 
                                   IN_DELETE, struct inotify_event */
 
94
                                   IN_MOVED_FROM, IN_DELETE,
 
95
                                   IN_EXCL_UNLINK, IN_ONLYDIR,
 
96
                                   struct inotify_event */
94
97
#include <fnmatch.h>            /* fnmatch(), FNM_FILE_NAME */
95
98
#include <stdio.h>              /* asprintf(), FILE, fopen(),
96
99
                                   getline(), sscanf(), feof(),
145
148
  mono_microsecs next_run;
146
149
} __attribute__((designated_init)) task_queue;
147
150
 
148
 
/* "func_type" - A function type for task functions
 
151
/* "task_func" - A function type for task functions
149
152
 
150
153
   I.e. functions for the code which runs when a task is run, all have
151
154
   this type */
431
434
    case EACCES:
432
435
    case ENAMETOOLONG:
433
436
    case ENOENT:
 
437
    case ENOTDIR:
434
438
      return EX_OSFILE;
435
439
    default:
436
440
      return EX_OSERR;
1017
1021
    return false;
1018
1022
  }
1019
1023
 
1020
 
  if(inotify_add_watch(fd, dir, IN_CLOSE_WRITE
1021
 
                       | IN_MOVED_TO | IN_DELETE)
 
1024
  if(inotify_add_watch(fd, dir, IN_CLOSE_WRITE | IN_MOVED_TO
 
1025
                       | IN_MOVED_FROM| IN_DELETE | IN_EXCL_UNLINK
 
1026
                       | IN_ONLYDIR)
1022
1027
     == -1){
1023
1028
    error(0, errno, "Failed to create inotify watch on %s", dir);
1024
1029
    return false;
1071
1076
  /* "sufficient to read at least one event." - inotify(7) */
1072
1077
  const size_t ievent_size = (sizeof(struct inotify_event)
1073
1078
                              + NAME_MAX + 1);
1074
 
  char ievent_buffer[sizeof(struct inotify_event) + NAME_MAX + 1];
1075
 
  struct inotify_event *ievent = ((struct inotify_event *)
1076
 
                                  ievent_buffer);
 
1079
  struct {
 
1080
    struct inotify_event event;
 
1081
    char name_buffer[NAME_MAX + 1];
 
1082
  } ievent_buffer;
 
1083
  struct inotify_event *const ievent = &ievent_buffer.event;
1077
1084
 
1078
1085
  const ssize_t read_length = read(fd, ievent, ievent_size);
1079
1086
  if(read_length == 0){ /* EOF */
1117
1124
             immediately */
1118
1125
          queue->next_run = 1;
1119
1126
        }
1120
 
      } else if(ievent->mask & IN_DELETE){
 
1127
      } else if(ievent->mask & (IN_MOVED_FROM | IN_DELETE)){
1121
1128
        if(not string_set_add(cancelled_filenames,
1122
1129
                              question_filename)){
1123
1130
          error(0, errno, "Could not add question %s to"
2220
2227
 
2221
2228
  {
2222
2229
    __attribute__((cleanup(cleanup_close)))
2223
 
      const int devnull_fd = open("/dev/null", O_WRONLY | O_CLOEXEC);
 
2230
      const int devnull_fd = open("/dev/null",
 
2231
                                  O_WRONLY | O_CLOEXEC | O_NOCTTY);
2224
2232
    g_assert_cmpint(devnull_fd, >=, 0);
2225
2233
    __attribute__((cleanup(cleanup_close)))
2226
2234
      const int real_stderr_fd = dup(STDERR_FILENO);
2250
2258
    {
2251
2259
      __attribute__((cleanup(cleanup_close)))
2252
2260
        const int devnull_fd = open("/dev/null",
2253
 
                                    O_WRONLY | O_CLOEXEC);
 
2261
                                    O_WRONLY | O_CLOEXEC | O_NOCTTY);
2254
2262
      g_assert_cmpint(devnull_fd, >=, 0);
2255
2263
      __attribute__((cleanup(cleanup_close)))
2256
2264
        const int real_stderr_fd = dup(STDERR_FILENO);
2901
2909
 
2902
2910
  __attribute__((cleanup(cleanup_close)))
2903
2911
    const int devnull_fd = open("/dev/null",
2904
 
                                O_WRONLY | O_CLOEXEC);
 
2912
                                O_WRONLY | O_CLOEXEC | O_NOCTTY);
2905
2913
  g_assert_cmpint(devnull_fd, >=, 0);
2906
2914
  __attribute__((cleanup(cleanup_close)))
2907
2915
    const int real_stderr_fd = dup(STDERR_FILENO);
2972
2980
 
2973
2981
  __attribute__((cleanup(cleanup_close)))
2974
2982
    const int devnull_fd = open("/dev/null",
2975
 
                                O_WRONLY | O_CLOEXEC);
 
2983
                                O_WRONLY | O_CLOEXEC, O_NOCTTY);
2976
2984
  g_assert_cmpint(devnull_fd, >=, 0);
2977
2985
  __attribute__((cleanup(cleanup_close)))
2978
2986
    const int real_stderr_fd = dup(STDERR_FILENO);
3016
3024
    buffer password = {};
3017
3025
 
3018
3026
  /* Reading /proc/self/mem from offset 0 will always give EIO */
3019
 
  const int fd = open("/proc/self/mem", O_RDONLY | O_CLOEXEC);
 
3027
  const int fd = open("/proc/self/mem",
 
3028
                      O_RDONLY | O_CLOEXEC | O_NOCTTY);
3020
3029
 
3021
3030
  bool password_is_read = false;
3022
3031
  bool quit_now = false;
3450
3459
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
3451
3460
}
3452
3461
 
 
3462
static void test_add_inotify_dir_watch_nondir(__attribute__((unused))
 
3463
                                              test_fixture *fixture,
 
3464
                                            __attribute__((unused))
 
3465
                                              gconstpointer
 
3466
                                              user_data){
 
3467
  __attribute__((cleanup(cleanup_close)))
 
3468
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
3469
  g_assert_cmpint(epoll_fd, >=, 0);
 
3470
  __attribute__((cleanup(cleanup_queue)))
 
3471
    task_queue *queue = create_queue();
 
3472
  g_assert_nonnull(queue);
 
3473
  __attribute__((cleanup(string_set_clear)))
 
3474
    string_set cancelled_filenames = {};
 
3475
  const mono_microsecs current_time = 0;
 
3476
 
 
3477
  bool quit_now = false;
 
3478
  buffer password = {};
 
3479
  bool mandos_client_exited = false;
 
3480
  bool password_is_read = false;
 
3481
 
 
3482
  const char not_a_directory[] = "/dev/tty";
 
3483
 
 
3484
  FILE *real_stderr = stderr;
 
3485
  FILE *devnull = fopen("/dev/null", "we");
 
3486
  g_assert_nonnull(devnull);
 
3487
  stderr = devnull;
 
3488
  g_assert_false(add_inotify_dir_watch(queue, epoll_fd, &quit_now,
 
3489
                                       &password, not_a_directory,
 
3490
                                       &cancelled_filenames,
 
3491
                                       &current_time,
 
3492
                                       &mandos_client_exited,
 
3493
                                       &password_is_read));
 
3494
  stderr = real_stderr;
 
3495
  g_assert_cmpint(fclose(devnull), ==, 0);
 
3496
 
 
3497
  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
 
3498
}
 
3499
 
3453
3500
static void test_add_inotify_dir_watch_EAGAIN(__attribute__((unused))
3454
3501
                                              test_fixture *fixture,
3455
3502
                                              __attribute__((unused))
3670
3717
}
3671
3718
 
3672
3719
static
 
3720
void test_add_inotify_dir_watch_IN_MOVED_FROM(__attribute__((unused))
 
3721
                                              test_fixture *fixture,
 
3722
                                              __attribute__((unused))
 
3723
                                              gconstpointer
 
3724
                                              user_data){
 
3725
  __attribute__((cleanup(cleanup_close)))
 
3726
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
3727
  g_assert_cmpint(epoll_fd, >=, 0);
 
3728
  __attribute__((cleanup(cleanup_queue)))
 
3729
    task_queue *queue = create_queue();
 
3730
  g_assert_nonnull(queue);
 
3731
  __attribute__((cleanup(string_set_clear)))
 
3732
    string_set cancelled_filenames = {};
 
3733
  const mono_microsecs current_time = 0;
 
3734
 
 
3735
  bool quit_now = false;
 
3736
  buffer password = {};
 
3737
  bool mandos_client_exited = false;
 
3738
  bool password_is_read = false;
 
3739
 
 
3740
  __attribute__((cleanup(cleanup_string)))
 
3741
    char *tempdir = make_temporary_directory();
 
3742
  g_assert_nonnull(tempdir);
 
3743
 
 
3744
  __attribute__((cleanup(cleanup_string)))
 
3745
    char *tempfilename = make_temporary_file_in_directory(tempdir);
 
3746
  g_assert_nonnull(tempfilename);
 
3747
 
 
3748
  __attribute__((cleanup(cleanup_string)))
 
3749
    char *targetdir = make_temporary_directory();
 
3750
  g_assert_nonnull(targetdir);
 
3751
 
 
3752
  __attribute__((cleanup(cleanup_string)))
 
3753
    char *targetfilename = NULL;
 
3754
  g_assert_cmpint(asprintf(&targetfilename, "%s/%s", targetdir,
 
3755
                           basename(tempfilename)), >, 0);
 
3756
  g_assert_nonnull(targetfilename);
 
3757
 
 
3758
  g_assert_true(add_inotify_dir_watch(queue, epoll_fd, &quit_now,
 
3759
                                      &password, tempdir,
 
3760
                                      &cancelled_filenames,
 
3761
                                      &current_time,
 
3762
                                      &mandos_client_exited,
 
3763
                                      &password_is_read));
 
3764
 
 
3765
  g_assert_cmpint(rename(tempfilename, targetfilename), ==, 0);
 
3766
 
 
3767
  const task_context *const added_read_task
 
3768
    = find_matching_task(queue,
 
3769
                         (task_context){ .func=read_inotify_event });
 
3770
  g_assert_nonnull(added_read_task);
 
3771
 
 
3772
  /* "sufficient to read at least one event." - inotify(7) */
 
3773
  const size_t ievent_size = (sizeof(struct inotify_event)
 
3774
                              + NAME_MAX + 1);
 
3775
  struct inotify_event *ievent = malloc(ievent_size);
 
3776
  g_assert_nonnull(ievent);
 
3777
 
 
3778
  ssize_t read_size = read(added_read_task->fd, ievent, ievent_size);
 
3779
 
 
3780
  g_assert_cmpint((int)read_size, >, 0);
 
3781
  g_assert_true(ievent->mask & IN_MOVED_FROM);
 
3782
  g_assert_cmpstr(ievent->name, ==, basename(tempfilename));
 
3783
 
 
3784
  free(ievent);
 
3785
 
 
3786
  g_assert_cmpint(unlink(targetfilename), ==, 0);
 
3787
  g_assert_cmpint(rmdir(targetdir), ==, 0);
 
3788
  g_assert_cmpint(rmdir(tempdir), ==, 0);
 
3789
}
 
3790
 
 
3791
static
3673
3792
void test_add_inotify_dir_watch_IN_DELETE(__attribute__((unused))
3674
3793
                                          test_fixture *fixture,
3675
3794
                                          __attribute__((unused))
3733
3852
  g_assert_cmpint(rmdir(tempdir), ==, 0);
3734
3853
}
3735
3854
 
 
3855
static
 
3856
void test_add_inotify_dir_watch_IN_EXCL_UNLINK(__attribute__((unused))
 
3857
                                               test_fixture *fixture,
 
3858
                                               __attribute__((unused))
 
3859
                                               gconstpointer
 
3860
                                               user_data){
 
3861
  __attribute__((cleanup(cleanup_close)))
 
3862
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
3863
  g_assert_cmpint(epoll_fd, >=, 0);
 
3864
  __attribute__((cleanup(cleanup_queue)))
 
3865
    task_queue *queue = create_queue();
 
3866
  g_assert_nonnull(queue);
 
3867
  __attribute__((cleanup(string_set_clear)))
 
3868
    string_set cancelled_filenames = {};
 
3869
  const mono_microsecs current_time = 0;
 
3870
 
 
3871
  bool quit_now = false;
 
3872
  buffer password = {};
 
3873
  bool mandos_client_exited = false;
 
3874
  bool password_is_read = false;
 
3875
 
 
3876
  __attribute__((cleanup(cleanup_string)))
 
3877
    char *tempdir = make_temporary_directory();
 
3878
  g_assert_nonnull(tempdir);
 
3879
 
 
3880
  __attribute__((cleanup(cleanup_string)))
 
3881
    char *tempfile = make_temporary_file_in_directory(tempdir);
 
3882
  g_assert_nonnull(tempfile);
 
3883
  int tempfile_fd = open(tempfile, O_WRONLY | O_CLOEXEC | O_NOCTTY
 
3884
                         | O_NOFOLLOW);
 
3885
  g_assert_cmpint(tempfile_fd, >, 2);
 
3886
 
 
3887
  g_assert_true(add_inotify_dir_watch(queue, epoll_fd, &quit_now,
 
3888
                                      &password, tempdir,
 
3889
                                      &cancelled_filenames,
 
3890
                                      &current_time,
 
3891
                                      &mandos_client_exited,
 
3892
                                      &password_is_read));
 
3893
  g_assert_cmpint(unlink(tempfile), ==, 0);
 
3894
 
 
3895
  g_assert_cmpuint((unsigned int)queue->length, >, 0);
 
3896
 
 
3897
  const task_context *const added_read_task
 
3898
    = find_matching_task(queue,
 
3899
                         (task_context){ .func=read_inotify_event });
 
3900
  g_assert_nonnull(added_read_task);
 
3901
 
 
3902
  g_assert_cmpint(added_read_task->fd, >, 2);
 
3903
  g_assert_true(fd_has_cloexec_and_nonblock(added_read_task->fd));
 
3904
 
 
3905
  /* "sufficient to read at least one event." - inotify(7) */
 
3906
  const size_t ievent_size = (sizeof(struct inotify_event)
 
3907
                              + NAME_MAX + 1);
 
3908
  struct inotify_event *ievent = malloc(ievent_size);
 
3909
  g_assert_nonnull(ievent);
 
3910
 
 
3911
  ssize_t read_size = 0;
 
3912
  read_size = read(added_read_task->fd, ievent, ievent_size);
 
3913
 
 
3914
  g_assert_cmpint((int)read_size, >, 0);
 
3915
  g_assert_true(ievent->mask & IN_DELETE);
 
3916
  g_assert_cmpstr(ievent->name, ==, basename(tempfile));
 
3917
 
 
3918
  g_assert_cmpint(close(tempfile_fd), ==, 0);
 
3919
 
 
3920
  /* IN_EXCL_UNLINK should make the closing of the previously unlinked
 
3921
     file not appear as an ievent, so we should not see it now. */
 
3922
  read_size = read(added_read_task->fd, ievent, ievent_size);
 
3923
  g_assert_cmpint((int)read_size, ==, -1);
 
3924
  g_assert_true(errno == EAGAIN);
 
3925
 
 
3926
  free(ievent);
 
3927
 
 
3928
  g_assert_cmpint(rmdir(tempdir), ==, 0);
 
3929
}
 
3930
 
3736
3931
static void test_read_inotify_event_readerror(__attribute__((unused))
3737
3932
                                              test_fixture *fixture,
3738
3933
                                              __attribute__((unused))
3744
3939
  const mono_microsecs current_time = 0;
3745
3940
 
3746
3941
  /* Reading /proc/self/mem from offset 0 will always result in EIO */
3747
 
  const int fd = open("/proc/self/mem", O_RDONLY | O_CLOEXEC);
 
3942
  const int fd = open("/proc/self/mem",
 
3943
                      O_RDONLY | O_CLOEXEC | O_NOCTTY);
3748
3944
 
3749
3945
  bool quit_now = false;
3750
3946
  __attribute__((cleanup(cleanup_queue)))
3929
4125
  const size_t ievent_max_size = (sizeof(struct inotify_event)
3930
4126
                                  + NAME_MAX + 1);
3931
4127
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
3932
 
  char ievent_buffer[sizeof(struct inotify_event) + NAME_MAX + 1];
3933
 
  struct inotify_event *ievent = ((struct inotify_event *)
3934
 
                                  ievent_buffer);
 
4128
  struct {
 
4129
    struct inotify_event event;
 
4130
    char name_buffer[NAME_MAX + 1];
 
4131
  } ievent_buffer;
 
4132
  struct inotify_event *const ievent = &ievent_buffer.event;
3935
4133
 
3936
4134
  const char dummy_file_name[] = "ask.dummy_file_name";
3937
4135
  ievent->mask = IN_CLOSE_WRITE;
3939
4137
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
3940
4138
  const size_t ievent_size = (sizeof(struct inotify_event)
3941
4139
                              + sizeof(dummy_file_name));
3942
 
  g_assert_cmpint(write(pipefds[1], ievent_buffer, ievent_size),
 
4140
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
3943
4141
                  ==, ievent_size);
3944
4142
  g_assert_cmpint(close(pipefds[1]), ==, 0);
3945
4143
 
4022
4220
  const size_t ievent_max_size = (sizeof(struct inotify_event)
4023
4221
                                  + NAME_MAX + 1);
4024
4222
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
4025
 
  char ievent_buffer[sizeof(struct inotify_event) + NAME_MAX + 1];
4026
 
  struct inotify_event *ievent = ((struct inotify_event *)
4027
 
                                  ievent_buffer);
 
4223
  struct {
 
4224
    struct inotify_event event;
 
4225
    char name_buffer[NAME_MAX + 1];
 
4226
  } ievent_buffer;
 
4227
  struct inotify_event *const ievent = &ievent_buffer.event;
4028
4228
 
4029
4229
  const char dummy_file_name[] = "ask.dummy_file_name";
4030
4230
  ievent->mask = IN_MOVED_TO;
4032
4232
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
4033
4233
  const size_t ievent_size = (sizeof(struct inotify_event)
4034
4234
                              + sizeof(dummy_file_name));
4035
 
  g_assert_cmpint(write(pipefds[1], ievent_buffer, ievent_size),
 
4235
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
4036
4236
                  ==, ievent_size);
4037
4237
  g_assert_cmpint(close(pipefds[1]), ==, 0);
4038
4238
 
4098
4298
      }));
4099
4299
}
4100
4300
 
 
4301
static
 
4302
void test_read_inotify_event_IN_MOVED_FROM(__attribute__((unused))
 
4303
                                           test_fixture *fixture,
 
4304
                                           __attribute__((unused))
 
4305
                                           gconstpointer user_data){
 
4306
  __attribute__((cleanup(cleanup_close)))
 
4307
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
4308
  g_assert_cmpint(epoll_fd, >=, 0);
 
4309
  __attribute__((cleanup(string_set_clear)))
 
4310
    string_set cancelled_filenames = {};
 
4311
  const mono_microsecs current_time = 0;
 
4312
 
 
4313
  int pipefds[2];
 
4314
  g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);
 
4315
 
 
4316
  /* "sufficient to read at least one event." - inotify(7) */
 
4317
  const size_t ievent_max_size = (sizeof(struct inotify_event)
 
4318
                                  + NAME_MAX + 1);
 
4319
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
 
4320
  struct {
 
4321
    struct inotify_event event;
 
4322
    char name_buffer[NAME_MAX + 1];
 
4323
  } ievent_buffer;
 
4324
  struct inotify_event *const ievent = &ievent_buffer.event;
 
4325
 
 
4326
  const char dummy_file_name[] = "ask.dummy_file_name";
 
4327
  ievent->mask = IN_MOVED_FROM;
 
4328
  ievent->len = sizeof(dummy_file_name);
 
4329
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
 
4330
  const size_t ievent_size = (sizeof(struct inotify_event)
 
4331
                              + sizeof(dummy_file_name));
 
4332
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
 
4333
                  ==, ievent_size);
 
4334
  g_assert_cmpint(close(pipefds[1]), ==, 0);
 
4335
 
 
4336
  bool quit_now = false;
 
4337
  buffer password = {};
 
4338
  bool mandos_client_exited = false;
 
4339
  bool password_is_read = false;
 
4340
  __attribute__((cleanup(cleanup_queue)))
 
4341
    task_queue *queue = create_queue();
 
4342
  g_assert_nonnull(queue);
 
4343
 
 
4344
  task_context task = {
 
4345
    .func=read_inotify_event,
 
4346
    .epoll_fd=epoll_fd,
 
4347
    .fd=pipefds[0],
 
4348
    .quit_now=&quit_now,
 
4349
    .password=&password,
 
4350
    .filename=strdup("/nonexistent"),
 
4351
    .cancelled_filenames=&cancelled_filenames,
 
4352
    .current_time=&current_time,
 
4353
    .mandos_client_exited=&mandos_client_exited,
 
4354
    .password_is_read=&password_is_read,
 
4355
  };
 
4356
  task.func(task, queue);
 
4357
  g_assert_false(quit_now);
 
4358
  g_assert_true(queue->next_run == 0);
 
4359
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
 
4360
 
 
4361
  g_assert_nonnull(find_matching_task(queue, (task_context){
 
4362
        .func=read_inotify_event,
 
4363
        .epoll_fd=epoll_fd,
 
4364
        .fd=pipefds[0],
 
4365
        .quit_now=&quit_now,
 
4366
        .password=&password,
 
4367
        .filename=task.filename,
 
4368
        .cancelled_filenames=&cancelled_filenames,
 
4369
        .current_time=&current_time,
 
4370
        .mandos_client_exited=&mandos_client_exited,
 
4371
        .password_is_read=&password_is_read,
 
4372
      }));
 
4373
 
 
4374
  g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],
 
4375
                                   EPOLLIN | EPOLLRDHUP));
 
4376
 
 
4377
  __attribute__((cleanup(cleanup_string)))
 
4378
    char *filename = NULL;
 
4379
  g_assert_cmpint(asprintf(&filename, "%s/%s", task.filename,
 
4380
                           dummy_file_name), >, 0);
 
4381
  g_assert_nonnull(filename);
 
4382
  g_assert_true(string_set_contains(*task.cancelled_filenames,
 
4383
                                    filename));
 
4384
}
 
4385
 
4101
4386
static void test_read_inotify_event_IN_DELETE(__attribute__((unused))
4102
4387
                                              test_fixture *fixture,
4103
4388
                                              __attribute__((unused))
4117
4402
  const size_t ievent_max_size = (sizeof(struct inotify_event)
4118
4403
                                  + NAME_MAX + 1);
4119
4404
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
4120
 
  char ievent_buffer[sizeof(struct inotify_event) + NAME_MAX + 1];
4121
 
  struct inotify_event *ievent = ((struct inotify_event *)
4122
 
                                  ievent_buffer);
 
4405
  struct {
 
4406
    struct inotify_event event;
 
4407
    char name_buffer[NAME_MAX + 1];
 
4408
  } ievent_buffer;
 
4409
  struct inotify_event *const ievent = &ievent_buffer.event;
4123
4410
 
4124
4411
  const char dummy_file_name[] = "ask.dummy_file_name";
4125
4412
  ievent->mask = IN_DELETE;
4127
4414
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
4128
4415
  const size_t ievent_size = (sizeof(struct inotify_event)
4129
4416
                              + sizeof(dummy_file_name));
4130
 
  g_assert_cmpint(write(pipefds[1], ievent_buffer, ievent_size),
 
4417
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
4131
4418
                  ==, ievent_size);
4132
4419
  g_assert_cmpint(close(pipefds[1]), ==, 0);
4133
4420
 
4199
4486
  const size_t ievent_max_size = (sizeof(struct inotify_event)
4200
4487
                                  + NAME_MAX + 1);
4201
4488
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
4202
 
  char ievent_buffer[sizeof(struct inotify_event) + NAME_MAX + 1];
4203
 
  struct inotify_event *ievent = ((struct inotify_event *)
4204
 
                                  ievent_buffer);
 
4489
  struct {
 
4490
    struct inotify_event event;
 
4491
    char name_buffer[NAME_MAX + 1];
 
4492
  } ievent_buffer;
 
4493
  struct inotify_event *const ievent = &ievent_buffer.event;
4205
4494
 
4206
4495
  const char dummy_file_name[] = "ignored.dummy_file_name";
4207
4496
  ievent->mask = IN_CLOSE_WRITE;
4209
4498
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
4210
4499
  const size_t ievent_size = (sizeof(struct inotify_event)
4211
4500
                              + sizeof(dummy_file_name));
4212
 
  g_assert_cmpint(write(pipefds[1], ievent_buffer, ievent_size),
 
4501
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
4213
4502
                  ==, ievent_size);
4214
4503
  g_assert_cmpint(close(pipefds[1]), ==, 0);
4215
4504
 
4273
4562
  const size_t ievent_max_size = (sizeof(struct inotify_event)
4274
4563
                                  + NAME_MAX + 1);
4275
4564
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
4276
 
  char ievent_buffer[sizeof(struct inotify_event) + NAME_MAX + 1];
4277
 
  struct inotify_event *ievent = ((struct inotify_event *)
4278
 
                                  ievent_buffer);
 
4565
  struct {
 
4566
    struct inotify_event event;
 
4567
    char name_buffer[NAME_MAX + 1];
 
4568
  } ievent_buffer;
 
4569
  struct inotify_event *const ievent = &ievent_buffer.event;
4279
4570
 
4280
4571
  const char dummy_file_name[] = "ignored.dummy_file_name";
4281
4572
  ievent->mask = IN_MOVED_TO;
4283
4574
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
4284
4575
  const size_t ievent_size = (sizeof(struct inotify_event)
4285
4576
                              + sizeof(dummy_file_name));
4286
 
  g_assert_cmpint(write(pipefds[1], ievent_buffer, ievent_size),
 
4577
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
4287
4578
                  ==, ievent_size);
4288
4579
  g_assert_cmpint(close(pipefds[1]), ==, 0);
4289
4580
 
4330
4621
                                   EPOLLIN | EPOLLRDHUP));
4331
4622
}
4332
4623
 
 
4624
static void
 
4625
test_read_inotify_event_IN_MOVED_FROM_badname(__attribute__((unused))
 
4626
                                              test_fixture *fixture,
 
4627
                                              __attribute__((unused))
 
4628
                                              gconstpointer
 
4629
                                              user_data){
 
4630
  __attribute__((cleanup(cleanup_close)))
 
4631
    const int epoll_fd = epoll_create1(EPOLL_CLOEXEC);
 
4632
  g_assert_cmpint(epoll_fd, >=, 0);
 
4633
  __attribute__((cleanup(string_set_clear)))
 
4634
    string_set cancelled_filenames = {};
 
4635
  const mono_microsecs current_time = 0;
 
4636
 
 
4637
  int pipefds[2];
 
4638
  g_assert_cmpint(pipe2(pipefds, O_CLOEXEC | O_NONBLOCK), ==, 0);
 
4639
 
 
4640
  /* "sufficient to read at least one event." - inotify(7) */
 
4641
  const size_t ievent_max_size = (sizeof(struct inotify_event)
 
4642
                                  + NAME_MAX + 1);
 
4643
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
 
4644
  struct {
 
4645
    struct inotify_event event;
 
4646
    char name_buffer[NAME_MAX + 1];
 
4647
  } ievent_buffer;
 
4648
  struct inotify_event *const ievent = &ievent_buffer.event;
 
4649
 
 
4650
  const char dummy_file_name[] = "ignored.dummy_file_name";
 
4651
  ievent->mask = IN_MOVED_FROM;
 
4652
  ievent->len = sizeof(dummy_file_name);
 
4653
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
 
4654
  const size_t ievent_size = (sizeof(struct inotify_event)
 
4655
                              + sizeof(dummy_file_name));
 
4656
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
 
4657
                  ==, ievent_size);
 
4658
  g_assert_cmpint(close(pipefds[1]), ==, 0);
 
4659
 
 
4660
  bool quit_now = false;
 
4661
  buffer password = {};
 
4662
  bool mandos_client_exited = false;
 
4663
  bool password_is_read = false;
 
4664
  __attribute__((cleanup(cleanup_queue)))
 
4665
    task_queue *queue = create_queue();
 
4666
  g_assert_nonnull(queue);
 
4667
 
 
4668
  task_context task = {
 
4669
    .func=read_inotify_event,
 
4670
    .epoll_fd=epoll_fd,
 
4671
    .fd=pipefds[0],
 
4672
    .quit_now=&quit_now,
 
4673
    .password=&password,
 
4674
    .filename=strdup("/nonexistent"),
 
4675
    .cancelled_filenames=&cancelled_filenames,
 
4676
    .current_time=&current_time,
 
4677
    .mandos_client_exited=&mandos_client_exited,
 
4678
    .password_is_read=&password_is_read,
 
4679
  };
 
4680
  task.func(task, queue);
 
4681
  g_assert_false(quit_now);
 
4682
  g_assert_true(queue->next_run == 0);
 
4683
  g_assert_cmpuint((unsigned int)queue->length, ==, 1);
 
4684
 
 
4685
  g_assert_nonnull(find_matching_task(queue, (task_context){
 
4686
        .func=read_inotify_event,
 
4687
        .epoll_fd=epoll_fd,
 
4688
        .fd=pipefds[0],
 
4689
        .quit_now=&quit_now,
 
4690
        .password=&password,
 
4691
        .filename=task.filename,
 
4692
        .cancelled_filenames=&cancelled_filenames,
 
4693
        .current_time=&current_time,
 
4694
        .mandos_client_exited=&mandos_client_exited,
 
4695
        .password_is_read=&password_is_read,
 
4696
      }));
 
4697
 
 
4698
  g_assert_true(epoll_set_contains(epoll_fd, pipefds[0],
 
4699
                                   EPOLLIN | EPOLLRDHUP));
 
4700
 
 
4701
  __attribute__((cleanup(cleanup_string)))
 
4702
    char *filename = NULL;
 
4703
  g_assert_cmpint(asprintf(&filename, "%s/%s", task.filename,
 
4704
                           dummy_file_name), >, 0);
 
4705
  g_assert_nonnull(filename);
 
4706
  g_assert_false(string_set_contains(cancelled_filenames, filename));
 
4707
}
 
4708
 
4333
4709
static
4334
4710
void test_read_inotify_event_IN_DELETE_badname(__attribute__((unused))
4335
4711
                                               test_fixture *fixture,
4350
4726
  const size_t ievent_max_size = (sizeof(struct inotify_event)
4351
4727
                                  + NAME_MAX + 1);
4352
4728
  g_assert_cmpint(ievent_max_size, <=, PIPE_BUF);
4353
 
  char ievent_buffer[sizeof(struct inotify_event) + NAME_MAX + 1];
4354
 
  struct inotify_event *ievent = ((struct inotify_event *)
4355
 
                                  ievent_buffer);
 
4729
  struct {
 
4730
    struct inotify_event event;
 
4731
    char name_buffer[NAME_MAX + 1];
 
4732
  } ievent_buffer;
 
4733
  struct inotify_event *const ievent = &ievent_buffer.event;
4356
4734
 
4357
4735
  const char dummy_file_name[] = "ignored.dummy_file_name";
4358
4736
  ievent->mask = IN_DELETE;
4360
4738
  memcpy(ievent->name, dummy_file_name, sizeof(dummy_file_name));
4361
4739
  const size_t ievent_size = (sizeof(struct inotify_event)
4362
4740
                              + sizeof(dummy_file_name));
4363
 
  g_assert_cmpint(write(pipefds[1], ievent_buffer, ievent_size),
 
4741
  g_assert_cmpint(write(pipefds[1], (char *)ievent, ievent_size),
4364
4742
                  ==, ievent_size);
4365
4743
  g_assert_cmpint(close(pipefds[1]), ==, 0);
4366
4744
 
5253
5631
                                            __attribute__((unused))
5254
5632
                                            gconstpointer user_data){
5255
5633
  __attribute__((cleanup(cleanup_close)))
5256
 
    const int epoll_fd = open("/dev/null", O_WRONLY | O_CLOEXEC);
 
5634
    const int epoll_fd = open("/dev/null",
 
5635
                              O_WRONLY | O_CLOEXEC | O_NOCTTY);
5257
5636
  __attribute__((cleanup(cleanup_string)))
5258
5637
    char *const question_filename = strdup("/nonexistent/question");
5259
5638
  g_assert_nonnull(question_filename);
5663
6042
                                            __attribute__((unused))
5664
6043
                                            gconstpointer user_data){
5665
6044
  __attribute__((cleanup(cleanup_close)))
5666
 
    const int epoll_fd = open("/dev/null", O_WRONLY | O_CLOEXEC);
 
6045
    const int epoll_fd = open("/dev/null",
 
6046
                              O_WRONLY | O_CLOEXEC | O_NOCTTY);
5667
6047
  __attribute__((cleanup(cleanup_string)))
5668
6048
    char *const question_filename = strdup("/nonexistent/question");
5669
6049
  g_assert_nonnull(question_filename);
5932
6312
                                              const char *const
5933
6313
                                              dirname){
5934
6314
  __attribute__((cleanup(cleanup_close)))
5935
 
    const int devnull_fd = open("/dev/null", O_WRONLY | O_CLOEXEC);
 
6315
    const int devnull_fd = open("/dev/null",
 
6316
                                O_WRONLY | O_CLOEXEC | O_NOCTTY);
5936
6317
  g_assert_cmpint(devnull_fd, >=, 0);
5937
6318
  __attribute__((cleanup(cleanup_close)))
5938
6319
    const int real_stderr_fd = dup(STDERR_FILENO);
7573
7954
              test_add_inotify_dir_watch);
7574
7955
  test_add_st("/task-creators/add_inotify_dir_watch/fail",
7575
7956
              test_add_inotify_dir_watch_fail);
 
7957
  test_add_st("/task-creators/add_inotify_dir_watch/not-a-directory",
 
7958
              test_add_inotify_dir_watch_nondir);
7576
7959
  test_add_st("/task-creators/add_inotify_dir_watch/EAGAIN",
7577
7960
              test_add_inotify_dir_watch_EAGAIN);
7578
7961
  test_add_st("/task-creators/add_inotify_dir_watch/IN_CLOSE_WRITE",
7579
7962
              test_add_inotify_dir_watch_IN_CLOSE_WRITE);
7580
7963
  test_add_st("/task-creators/add_inotify_dir_watch/IN_MOVED_TO",
7581
7964
              test_add_inotify_dir_watch_IN_MOVED_TO);
 
7965
  test_add_st("/task-creators/add_inotify_dir_watch/IN_MOVED_FROM",
 
7966
              test_add_inotify_dir_watch_IN_MOVED_FROM);
 
7967
  test_add_st("/task-creators/add_inotify_dir_watch/IN_EXCL_UNLINK",
 
7968
              test_add_inotify_dir_watch_IN_EXCL_UNLINK);
7582
7969
  test_add_st("/task-creators/add_inotify_dir_watch/IN_DELETE",
7583
7970
              test_add_inotify_dir_watch_IN_DELETE);
7584
7971
  test_add_st("/task/read_inotify_event/readerror",
7593
7980
              test_read_inotify_event_IN_CLOSE_WRITE);
7594
7981
  test_add_st("/task/read_inotify_event/IN_MOVED_TO",
7595
7982
              test_read_inotify_event_IN_MOVED_TO);
 
7983
  test_add_st("/task/read_inotify_event/IN_MOVED_FROM",
 
7984
              test_read_inotify_event_IN_MOVED_FROM);
7596
7985
  test_add_st("/task/read_inotify_event/IN_DELETE",
7597
7986
              test_read_inotify_event_IN_DELETE);
7598
7987
  test_add_st("/task/read_inotify_event/IN_CLOSE_WRITE/badname",
7599
7988
              test_read_inotify_event_IN_CLOSE_WRITE_badname);
7600
7989
  test_add_st("/task/read_inotify_event/IN_MOVED_TO/badname",
7601
7990
              test_read_inotify_event_IN_MOVED_TO_badname);
 
7991
  test_add_st("/task/read_inotify_event/IN_MOVED_FROM/badname",
 
7992
              test_read_inotify_event_IN_MOVED_FROM_badname);
7602
7993
  test_add_st("/task/read_inotify_event/IN_DELETE/badname",
7603
7994
              test_read_inotify_event_IN_DELETE_badname);
7604
7995
  test_add_st("/task/open_and_parse_question/ENOENT",