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  • Committer: Teddy Hogeborn
  • Date: 2019-08-10 15:19:47 UTC
  • Revision ID: teddy@recompile.se-20190810151947-wyw7cetrh1pvtw37
Simplification of Python 3 compatibility code

Normally, "class Foo:" in Python 2 creates a "classic" class, but in
Python 3, all classes are "new-style" classes, which you can get in
Python 2 by doing "class Foo(object):", i.e. inheriting from "object".
But, you can also get a new-style classes from "class Foo:" in Python
2 by setting the global "__metaclass__" variable to "type", which
makes the code less cluttered.  Note: it is still necessary to inherit
from "object" in Python 2 to get a new-style class if the class is
otherwise inheriting only from "classic" classes.

* mandos: Set "__metaclass__ = type" globally for Python 2, and remove
          inheriting from "object" in all places possible.
* mandos-ctl: - '' -

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#include <error.h>              /* error() */
49
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#include <sysexits.h>           /* EX_USAGE, EX_OSERR, EX_OSFILE */
50
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#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,
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                                   ECONNREFUSED, ECONNRESET,
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                                   ETOOMANYREFS, EMSGSIZE, EBADF,
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                                   EINVAL */
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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,
86
 
                                   open(), O_WRONLY, O_RDONLY */
 
86
                                   open(), O_WRONLY, O_NOCTTY,
 
87
                                   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(),
92
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                                   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 */
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#include <fnmatch.h>            /* fnmatch(), FNM_FILE_NAME */
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#include <stdio.h>              /* asprintf(), FILE, fopen(),
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                                   getline(), sscanf(), feof(),
431
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    case EACCES:
432
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    case ENAMETOOLONG:
433
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    case ENOENT:
 
437
    case ENOTDIR:
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      return EX_OSFILE;
435
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    default:
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      return EX_OSERR;
1018
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  }
1019
1023
 
1020
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  if(inotify_add_watch(fd, dir, IN_CLOSE_WRITE | IN_MOVED_TO
1021
 
                       | IN_MOVED_FROM| IN_DELETE | IN_EXCL_UNLINK)
 
1025
                       | IN_MOVED_FROM| IN_DELETE | IN_EXCL_UNLINK
 
1026
                       | IN_ONLYDIR)
1022
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     == -1){
1023
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    error(0, errno, "Failed to create inotify watch on %s", dir);
1024
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    return false;
2222
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2223
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  {
2224
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    __attribute__((cleanup(cleanup_close)))
2225
 
      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);
2226
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    g_assert_cmpint(devnull_fd, >=, 0);
2227
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    __attribute__((cleanup(cleanup_close)))
2228
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      const int real_stderr_fd = dup(STDERR_FILENO);
2252
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    {
2253
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      __attribute__((cleanup(cleanup_close)))
2254
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        const int devnull_fd = open("/dev/null",
2255
 
                                    O_WRONLY | O_CLOEXEC);
 
2261
                                    O_WRONLY | O_CLOEXEC | O_NOCTTY);
2256
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      g_assert_cmpint(devnull_fd, >=, 0);
2257
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      __attribute__((cleanup(cleanup_close)))
2258
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        const int real_stderr_fd = dup(STDERR_FILENO);
2903
2909
 
2904
2910
  __attribute__((cleanup(cleanup_close)))
2905
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    const int devnull_fd = open("/dev/null",
2906
 
                                O_WRONLY | O_CLOEXEC);
 
2912
                                O_WRONLY | O_CLOEXEC | O_NOCTTY);
2907
2913
  g_assert_cmpint(devnull_fd, >=, 0);
2908
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  __attribute__((cleanup(cleanup_close)))
2909
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    const int real_stderr_fd = dup(STDERR_FILENO);
2974
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2975
2981
  __attribute__((cleanup(cleanup_close)))
2976
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    const int devnull_fd = open("/dev/null",
2977
 
                                O_WRONLY | O_CLOEXEC);
 
2983
                                O_WRONLY | O_CLOEXEC, O_NOCTTY);
2978
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  g_assert_cmpint(devnull_fd, >=, 0);
2979
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  __attribute__((cleanup(cleanup_close)))
2980
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    const int real_stderr_fd = dup(STDERR_FILENO);
3018
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    buffer password = {};
3019
3025
 
3020
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  /* Reading /proc/self/mem from offset 0 will always give EIO */
3021
 
  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);
3022
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3023
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  bool password_is_read = false;
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  bool quit_now = false;
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  g_assert_cmpuint((unsigned int)queue->length, ==, 0);
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}
3454
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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
 
3455
3500
static void test_add_inotify_dir_watch_EAGAIN(__attribute__((unused))
3456
3501
                                              test_fixture *fixture,
3457
3502
                                              __attribute__((unused))
3894
3939
  const mono_microsecs current_time = 0;
3895
3940
 
3896
3941
  /* Reading /proc/self/mem from offset 0 will always result in EIO */
3897
 
  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);
3898
3944
 
3899
3945
  bool quit_now = false;
3900
3946
  __attribute__((cleanup(cleanup_queue)))
5585
5631
                                            __attribute__((unused))
5586
5632
                                            gconstpointer user_data){
5587
5633
  __attribute__((cleanup(cleanup_close)))
5588
 
    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);
5589
5636
  __attribute__((cleanup(cleanup_string)))
5590
5637
    char *const question_filename = strdup("/nonexistent/question");
5591
5638
  g_assert_nonnull(question_filename);
5995
6042
                                            __attribute__((unused))
5996
6043
                                            gconstpointer user_data){
5997
6044
  __attribute__((cleanup(cleanup_close)))
5998
 
    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);
5999
6047
  __attribute__((cleanup(cleanup_string)))
6000
6048
    char *const question_filename = strdup("/nonexistent/question");
6001
6049
  g_assert_nonnull(question_filename);
6264
6312
                                              const char *const
6265
6313
                                              dirname){
6266
6314
  __attribute__((cleanup(cleanup_close)))
6267
 
    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);
6268
6317
  g_assert_cmpint(devnull_fd, >=, 0);
6269
6318
  __attribute__((cleanup(cleanup_close)))
6270
6319
    const int real_stderr_fd = dup(STDERR_FILENO);
7905
7954
              test_add_inotify_dir_watch);
7906
7955
  test_add_st("/task-creators/add_inotify_dir_watch/fail",
7907
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);
7908
7959
  test_add_st("/task-creators/add_inotify_dir_watch/EAGAIN",
7909
7960
              test_add_inotify_dir_watch_EAGAIN);
7910
7961
  test_add_st("/task-creators/add_inotify_dir_watch/IN_CLOSE_WRITE",