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  • Committer: Teddy Hogeborn
  • Date: 2015-07-02 18:22:22 UTC
  • mto: (237.7.307 trunk)
  • mto: This revision was merged to the branch mainline in revision 325.
  • Revision ID: teddy@recompile.se-20150702182222-034v03mb8orwhezn
mandos-client: Minor changes to check for more error conditions.

* mandos-client.c (add_remove_local_route): Do TEMP_FAILURE_RETRY
                                            around closing of
                                            /dev/null.  Check return
                                            value when opening helper
                                            directory and helper
                                            executable.
  (run_network_hooks): Cast return value of TEMP_FAILURE_RETRY to int.
                       Do TEMP_FAILURE_RETRY around closing of
                       /dev/null.

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/*
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 * Password-prompt - Read a password from the terminal and print it
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 * 
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 * Copyright © 2008-2019, 2021-2022 Teddy Hogeborn
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 * Copyright © 2008-2019, 2021-2022 Björn Påhlsson
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 * 
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 * This file is part of Mandos.
9
 
 * 
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 * Mandos is free software: you can redistribute it and/or modify it
11
 
 * 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
13
 
 * (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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 * Copyright © 2008-2014 Teddy Hogeborn
 
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 * Copyright © 2008-2014 Björn Påhlsson
 
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 * 
 
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 * This program is free software: you can redistribute it and/or
 
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 * modify it under the terms of the GNU General Public License as
 
10
 * published by the Free Software Foundation, either version 3 of the
 
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 * License, or (at your option) any later version.
 
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 * 
 
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 * This program 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
21
 
 * along with Mandos.  If not, see <http://www.gnu.org/licenses/>.
 
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 * along with this program.  If not, see
 
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 * <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             /* vasprintf(),
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                                   program_invocation_short_name,
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                                   asprintf(), getline() */
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#include <sys/types.h>          /* sig_atomic_t, pid_t */
 
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#define _GNU_SOURCE             /* getline(), asprintf() */
 
26
 
 
27
#include <termios.h>            /* struct termios, tcsetattr(),
 
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                                   TCSAFLUSH, tcgetattr(), ECHO */
 
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#include <unistd.h>             /* struct termios, tcsetattr(),
 
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                                   STDIN_FILENO, TCSAFLUSH,
 
31
                                   tcgetattr(), ECHO, readlink() */
 
32
#include <signal.h>             /* sig_atomic_t, raise(), struct
 
33
                                   sigaction, sigemptyset(),
 
34
                                   sigaction(), sigaddset(), SIGINT,
 
35
                                   SIGQUIT, SIGHUP, SIGTERM,
 
36
                                   raise() */
 
37
#include <stddef.h>             /* NULL, size_t, ssize_t */
 
38
#include <sys/types.h>          /* ssize_t, struct dirent, pid_t,
 
39
                                   ssize_t, open() */
 
40
#include <stdlib.h>             /* EXIT_SUCCESS, EXIT_FAILURE,
 
41
                                   getenv(), free() */
 
42
#include <dirent.h>             /* scandir(), alphasort() */
 
43
#include <stdio.h>              /* fprintf(), stderr, getline(),
 
44
                                   stdin, feof(), fputc(), vfprintf(),
 
45
                                   vasprintf() */
 
46
#include <errno.h>              /* errno, EBADF, ENOTTY, EINVAL,
 
47
                                   EFAULT, EFBIG, EIO, ENOSPC, EINTR
 
48
                                */
 
49
#include <error.h>              /* error() */
 
50
#include <iso646.h>             /* or, not */
30
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#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,
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                                   EX_IOERR, EX_OSFILE, EX_OK */
 
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#include <inttypes.h>           /* strtoumax() */
 
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#include <sys/stat.h>           /* struct stat, lstat(), open() */
 
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#include <string.h>             /* strlen, rindex, memcmp, strerror()
 
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                                 */
 
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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() */
 
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#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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   */
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  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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  if(ret == -1){
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    error_plus(1, errno, "scandir");
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  }
229
 
  {
230
 
    int i = ret;
231
 
    while(i--){
232
 
      free(direntries[i]);
233
 
    }
234
 
  }
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  free(direntries);
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  return ret > 0;
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}
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  struct termios t_new, t_old;
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  char *buffer = NULL;
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  char *prefix = NULL;
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  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,
258
 
        .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){
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      errno = 0;
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      switch (key){
278
 
      case 'p':                 /* --prefix */
 
257
      case 'p':
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        prefix = arg;
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        break;
281
 
      case 128:                 /* --debug */
 
260
      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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         */
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        argp_state_help(state, state->out_stream,
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                        (ARGP_HELP_STD_HELP | ARGP_HELP_EXIT_ERR)
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                        & ~(unsigned int)ARGP_HELP_EXIT_OK);
294
 
        __builtin_unreachable();
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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();
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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);
444
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    if(prefix){
445
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      fprintf(stderr, "%s ", prefix);
446
420
    }
447
 
    if(prompt != NULL){
448
 
      fprintf(stderr, "%s: ", prompt);
449
 
    } else {
 
421
    {
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      const char *cryptsource = getenv("CRYPTTAB_SOURCE");
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      const char *crypttarget = getenv("CRYPTTAB_NAME");
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      /* Before cryptsetup 1.1.0~rc2 */
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    }
528
500
    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);
 
502
      if(errno != EINTR and not feof(stdin)){
 
503
        error_plus(0, errno, "getline");
 
504
        switch(e){
 
505
        case EBADF:
 
506
          status = EX_UNAVAILABLE;
 
507
          break;
 
508
        case EIO:
 
509
        case EINVAL:
 
510
        default:
 
511
          status = EX_IOERR;
 
512
          break;
546
513
        }
 
514
        break;
547
515
      }
548
516
    }
549
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    /* if(sret == 0), then the only sensible thing to do is to retry