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Viewing changes to plugins.d/password-prompt.c

  • Committer: Teddy Hogeborn
  • Date: 2018-08-15 09:26:02 UTC
  • Revision ID: teddy@recompile.se-20180815092602-xoyb5s6gf8376i7u
http://bugs.debian.org/894495
mandos-client: Set system clock if necessary

* plugins.d/mandos-client.c (init_gpgme/import_key): If the system
  clock is not set, or set to january 1970, set the system clock to
  the more plausible value that is the mtime of the key file.  This is
  required by GnuPG to be able to import the keys.  (We can't pass the
  --ignore-time-conflict or the --ignore-valid-from options though
  GPGME.)

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Lines of Context:
plugins.d/password-prompt.c
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/*
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 * Password-prompt - Read a password from the terminal and print it
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 * 
5
 
 * Copyright © 2008-2019, 2021 Teddy Hogeborn
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 * Copyright © 2008-2019, 2021 Björn Påhlsson
 
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 * Copyright © 2008-2018 Teddy Hogeborn
 
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 * Copyright © 2008-2018 Björn Påhlsson
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 * 
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 * This file is part of Mandos.
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 * 
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 * Contact the authors at <mandos@recompile.se>.
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 */
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25
 
26
 
#define _GNU_SOURCE             /* vasprintf(),
27
 
                                   program_invocation_short_name,
28
 
                                   asprintf(), getline() */
29
 
#include <sys/types.h>          /* sig_atomic_t, pid_t */
 
26
#define _GNU_SOURCE             /* getline(), asprintf() */
 
27
 
 
28
#include <termios.h>            /* struct termios, tcsetattr(),
 
29
                                   TCSAFLUSH, tcgetattr(), ECHO */
 
30
#include <unistd.h>             /* struct termios, tcsetattr(),
 
31
                                   STDIN_FILENO, TCSAFLUSH,
 
32
                                   tcgetattr(), ECHO, readlink() */
 
33
#include <signal.h>             /* sig_atomic_t, raise(), struct
 
34
                                   sigaction, sigemptyset(),
 
35
                                   sigaction(), sigaddset(), SIGINT,
 
36
                                   SIGQUIT, SIGHUP, SIGTERM,
 
37
                                   raise() */
 
38
#include <stddef.h>             /* NULL, size_t, ssize_t */
 
39
#include <sys/types.h>          /* ssize_t, struct dirent, pid_t,
 
40
                                   ssize_t, open() */
 
41
#include <stdlib.h>             /* EXIT_SUCCESS, EXIT_FAILURE,
 
42
                                   getenv(), free() */
 
43
#include <dirent.h>             /* scandir(), alphasort() */
 
44
#include <stdio.h>              /* fprintf(), stderr, getline(),
 
45
                                   stdin, feof(), fputc(), vfprintf(),
 
46
                                   vasprintf() */
 
47
#include <errno.h>              /* errno, EBADF, ENOTTY, EINVAL,
 
48
                                   EFAULT, EFBIG, EIO, ENOSPC, EINTR
 
49
                                */
 
50
#include <error.h>              /* error() */
 
51
#include <iso646.h>             /* or, not */
30
52
#include <stdbool.h>            /* bool, false, true */
31
 
#include <argp.h>               /* argp_program_version,
32
 
                                   argp_program_bug_address,
33
 
                                   struct argp_option,
34
 
                                   struct argp_state, argp_state_help,
35
 
                                   ARGP_HELP_STD_HELP,
36
 
                                   ARGP_HELP_EXIT_ERR,
37
 
                                   ARGP_HELP_EXIT_OK, ARGP_HELP_USAGE,
38
 
                                   argp_err_exit_status,
39
 
                                   ARGP_ERR_UNKNOWN, argp_parse(),
40
 
                                   ARGP_IN_ORDER, ARGP_NO_HELP */
41
 
#include <stdarg.h>             /* va_list, va_start(), vfprintf() */
42
 
#include <stdio.h>              /* vasprintf(), fprintf(), stderr,
43
 
                                   vfprintf(), asprintf(), getline(),
44
 
                                   stdin, feof(), clearerr(),
45
 
                                   fputc() */
46
 
#include <errno.h>              /* program_invocation_short_name,
47
 
                                   errno, ENOENT, error_t, ENOMEM,
48
 
                                   EINVAL, EBADF, ENOTTY, EFAULT,
49
 
                                   EFBIG, EIO, ENOSPC, EINTR */
50
 
#include <string.h>             /* strerror(), strrchr(), strcmp() */
51
 
#include <error.h>              /* error() */
52
 
#include <stdlib.h>             /* free(), realloc(), EXIT_SUCCESS,
53
 
                                   EXIT_FAILURE, getenv() */
54
 
#include <unistd.h>             /* access(), R_OK, ssize_t, close(),
55
 
                                   read(), STDIN_FILENO, write(),
56
 
                                   STDOUT_FILENO */
57
 
#include <dirent.h>             /* struct dirent, scandir(),
58
 
                                   alphasort() */
59
 
#include <inttypes.h>           /* uintmax_t, strtoumax() */
60
 
#include <iso646.h>             /* or, and, not */
61
 
#include <fcntl.h>              /* open(), O_RDONLY */
62
 
#include <stddef.h>             /* NULL, size_t */
63
 
#include <termios.h>            /* struct termios, tcgetattr(),
64
 
                                   tcflag_t, ECHO, tcsetattr(),
65
 
                                   TCSAFLUSH */
66
 
#include <signal.h>             /* struct sigaction, sigemptyset(),
67
 
                                   sigaddset(), SIGINT, SIGHUP,
68
 
                                   SIGTERM, SIG_IGN, SIG_DFL,
69
 
                                   raise() */
70
 
#include <sysexits.h>           /* EX_OSERR, EX_USAGE, EX_UNAVAILABLE,
71
 
                                   EX_IOERR, EX_OSFILE, EX_OK */
 
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#include <inttypes.h>           /* strtoumax() */
 
54
#include <sys/stat.h>           /* struct stat, lstat(), open() */
 
55
#include <string.h>             /* strlen, rindex, memcmp, strerror()
 
56
                                 */
 
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#include <argp.h>               /* struct argp_option, struct
 
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                                   argp_state, struct argp,
 
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                                   argp_parse(), error_t,
 
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                                   ARGP_KEY_ARG, ARGP_KEY_END,
 
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                                   ARGP_ERR_UNKNOWN */
 
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#include <sysexits.h>           /* EX_SOFTWARE, EX_OSERR,
 
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                                   EX_UNAVAILABLE, EX_IOERR, EX_OK */
 
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#include <fcntl.h>              /* open() */
 
65
#include <stdarg.h>             /* va_list, va_start(), ... */
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volatile sig_atomic_t quit_now = 0;
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int signal_received;
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     from the terminal.  Password-prompt will exit if it detects
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     plymouth since plymouth performs the same functionality.
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   */
119
 
  if(access("/run/plymouth/pid", R_OK) == 0){
120
 
    return true;
121
 
  }
122
 
  
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  __attribute__((nonnull))
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  int is_plymouth(const struct dirent *proc_entry){
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    int ret;
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  struct termios t_new, t_old;
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  char *buffer = NULL;
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  char *prefix = NULL;
247
 
  char *prompt = NULL;
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  int status = EXIT_SUCCESS;
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  struct sigaction old_action,
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    new_action = { .sa_handler = termination_handler,
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      { .name = "prefix", .key = 'p',
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        .arg = "PREFIX", .flags = 0,
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        .doc = "Prefix shown before the prompt", .group = 2 },
257
 
      { .name = "prompt", .key = 129,
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        .arg = "PROMPT", .flags = 0,
259
 
        .doc = "The prompt to show", .group = 2 },
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      { .name = "debug", .key = 128,
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        .doc = "Debug mode", .group = 3 },
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      /*
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    error_t parse_opt (int key, char *arg, struct argp_state *state){
276
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      errno = 0;
277
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      switch (key){
278
 
      case 'p':                 /* --prefix */
 
264
      case 'p':
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        prefix = arg;
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        break;
281
 
      case 128:                 /* --debug */
 
267
      case 128:
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        debug = true;
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        break;
284
 
      case 129:                 /* --prompt */
285
 
        prompt = arg;
286
 
        break;
287
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        /*
288
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         * These reproduce what we would get without ARGP_NO_HELP
289
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         */
291
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        argp_state_help(state, state->out_stream,
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                        (ARGP_HELP_STD_HELP | ARGP_HELP_EXIT_ERR)
293
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                        & ~(unsigned int)ARGP_HELP_EXIT_OK);
294
 
        __builtin_unreachable();
295
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      case -3:                  /* --usage */
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        argp_state_help(state, state->out_stream,
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                        ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);
298
 
        __builtin_unreachable();
299
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      case 'V':                 /* --version */
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        fprintf(state->out_stream, "%s\n", argp_program_version);
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        exit(argp_err_exit_status);
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    if(prefix){
445
426
      fprintf(stderr, "%s ", prefix);
446
427
    }
447
 
    if(prompt != NULL){
448
 
      fprintf(stderr, "%s: ", prompt);
449
 
    } else {
 
428
    {
450
429
      const char *cryptsource = getenv("CRYPTTAB_SOURCE");
451
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      const char *crypttarget = getenv("CRYPTTAB_NAME");
452
431
      /* Before cryptsetup 1.1.0~rc2 */
527
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    }
528
507
    if(sret < 0){
529
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      int e = errno;
530
 
      if(errno != EINTR){
531
 
        if(not feof(stdin)){
532
 
          error_plus(0, errno, "getline");
533
 
          switch(e){
534
 
          case EBADF:
535
 
            status = EX_UNAVAILABLE;
536
 
            break;
537
 
          case EIO:
538
 
          case EINVAL:
539
 
          default:
540
 
            status = EX_IOERR;
541
 
            break;
542
 
          }
543
 
          break;
544
 
        } else {
545
 
          clearerr(stdin);
 
509
      if(errno != EINTR and not feof(stdin)){
 
510
        error_plus(0, errno, "getline");
 
511
        switch(e){
 
512
        case EBADF:
 
513
          status = EX_UNAVAILABLE;
 
514
          break;
 
515
        case EIO:
 
516
        case EINVAL:
 
517
        default:
 
518
          status = EX_IOERR;
 
519
          break;
546
520
        }
 
521
        break;
547
522
      }
548
523
    }
549
524
    /* if(sret == 0), then the only sensible thing to do is to retry