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

  • Committer: Teddy Hogeborn
  • Date: 2019-02-10 03:50:20 UTC
  • Revision ID: teddy@recompile.se-20190210035020-nttr1tybgwwixueu
http://bugs.debian.org/879538
http://bugs.debian.org/916673
Show debconf note about new TLS key IDs

If mandos-client did not see TLS keys and had to create them, or if
mandos sees GnuTLS version 3.6.6 or later, show an important notice on
package installation about the importance of adding the new key_id
options to clients.conf on the Mandos server.

* debian/control (Package: mandos, Package: mandos-client): Depend on
                                                            debconf.
* debian/mandos-client.lintian-overrides: Override warnings.
* debian/mandos-client.postinst (create_keys): Show notice if new TLS
                                               key files were created.
* debian/mandos-client.templates: New.
* debian/mandos.lintian-overrides: Override warnings.
* debian/mandos.postinst (configure): If GnuTLS 3.6.6 or later is
                                      detected, show an important
                                      notice (once) about the new
                                      key_id option required in
                                      clients.conf.
* debian/mandos.templates: New.

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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
4
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 * 
5
 
 * Copyright © 2008-2019, 2021-2022 Teddy Hogeborn
6
 
 * Copyright © 2008-2019, 2021-2022 Björn Påhlsson
 
5
 * Copyright © 2008-2018 Teddy Hogeborn
 
6
 * Copyright © 2008-2018 Björn Påhlsson
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 * 
8
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 * This file is part of Mandos.
9
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 * 
23
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 * Contact the authors at <mandos@recompile.se>.
24
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 */
25
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 */
 
53
#include <inttypes.h>           /* strtoumax() */
 
54
#include <sys/stat.h>           /* struct stat, lstat(), open() */
 
55
#include <string.h>             /* strlen, rindex, memcmp, strerror()
 
56
                                 */
 
57
#include <argp.h>               /* struct argp_option, struct
 
58
                                   argp_state, struct argp,
 
59
                                   argp_parse(), error_t,
 
60
                                   ARGP_KEY_ARG, ARGP_KEY_END,
 
61
                                   ARGP_ERR_UNKNOWN */
 
62
#include <sysexits.h>           /* EX_SOFTWARE, EX_OSERR,
 
63
                                   EX_UNAVAILABLE, EX_IOERR, EX_OK */
 
64
#include <fcntl.h>              /* open() */
 
65
#include <stdarg.h>             /* va_list, va_start(), ... */
72
66
 
73
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volatile sig_atomic_t quit_now = 0;
74
68
int signal_received;
116
110
     from the terminal.  Password-prompt will exit if it detects
117
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     plymouth since plymouth performs the same functionality.
118
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   */
119
 
  if(access("/run/plymouth/pid", R_OK) == 0){
120
 
    return true;
121
 
  }
122
 
  
123
113
  __attribute__((nonnull))
124
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  int is_plymouth(const struct dirent *proc_entry){
125
115
    int ret;
244
234
  struct termios t_new, t_old;
245
235
  char *buffer = NULL;
246
236
  char *prefix = NULL;
247
 
  char *prompt = NULL;
248
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  int status = EXIT_SUCCESS;
249
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  struct sigaction old_action,
250
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    new_action = { .sa_handler = termination_handler,
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      { .name = "prefix", .key = 'p',
255
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        .arg = "PREFIX", .flags = 0,
256
245
        .doc = "Prefix shown before the prompt", .group = 2 },
257
 
      { .name = "prompt", .key = 129,
258
 
        .arg = "PROMPT", .flags = 0,
259
 
        .doc = "The prompt to show", .group = 2 },
260
246
      { .name = "debug", .key = 128,
261
247
        .doc = "Debug mode", .group = 3 },
262
248
      /*
275
261
    error_t parse_opt (int key, char *arg, struct argp_state *state){
276
262
      errno = 0;
277
263
      switch (key){
278
 
      case 'p':                 /* --prefix */
 
264
      case 'p':
279
265
        prefix = arg;
280
266
        break;
281
 
      case 128:                 /* --debug */
 
267
      case 128:
282
268
        debug = true;
283
269
        break;
284
 
      case 129:                 /* --prompt */
285
 
        prompt = arg;
286
 
        break;
287
270
        /*
288
271
         * These reproduce what we would get without ARGP_NO_HELP
289
272
         */
291
274
        argp_state_help(state, state->out_stream,
292
275
                        (ARGP_HELP_STD_HELP | ARGP_HELP_EXIT_ERR)
293
276
                        & ~(unsigned int)ARGP_HELP_EXIT_OK);
294
 
        __builtin_unreachable();
295
277
      case -3:                  /* --usage */
296
278
        argp_state_help(state, state->out_stream,
297
279
                        ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);
298
 
        __builtin_unreachable();
299
280
      case 'V':                 /* --version */
300
281
        fprintf(state->out_stream, "%s\n", argp_program_version);
301
282
        exit(argp_err_exit_status);
444
425
    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
430
      const char *crypttarget = getenv("CRYPTTAB_NAME");
452
431
      /* Before cryptsetup 1.1.0~rc2 */
527
506
    }
528
507
    if(sret < 0){
529
508
      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