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  • Committer: Teddy Hogeborn
  • Date: 2019-08-05 21:14:05 UTC
  • Revision ID: teddy@recompile.se-20190805211405-9m6hecekaihpttz9
Override lintian warnings about upgrading from old versions

There are some really things which are imperative that we fix in case
someone were to upgrade from a really old version.  We want to keep
these fixes in the postinst maintainer scripts, even though lintian
complains about such old upgrades not being supported by Debian in
general.  We prefer the code being there, for the sake of the users.

* debian/mandos-client.lintian-overrides
  (maintainer-script-supports-ancient-package-version): New.
  debian/mandos.lintian-overrides
  (maintainer-script-supports-ancient-package-version): - '' -

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/*
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 * Mandos plugin runner - Run Mandos plugins
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 *
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 * Copyright © 2008-2022 Teddy Hogeborn
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 * Copyright © 2008-2022 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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 */
25
25
 
26
 
#define _GNU_SOURCE             /* strchrnul(), TEMP_FAILURE_RETRY(),
27
 
                                   getline(), asprintf(), O_CLOEXEC,
28
 
                                   scandirat(), pipe2() */
29
 
#include <argp.h>               /* argp_program_version,
30
 
                                   argp_program_bug_address,
31
 
                                   struct argp_option,
32
 
                                   struct argp_state, argp_error(),
33
 
                                   ARGP_NO_EXIT, argp_state_help,
34
 
                                   ARGP_HELP_STD_HELP,
35
 
                                   ARGP_HELP_USAGE, ARGP_HELP_EXIT_OK,
36
 
                                   ARGP_KEY_ARG, ARGP_ERR_UNKNOWN,
37
 
                                   struct argp, argp_parse(),
38
 
                                   ARGP_IN_ORDER, ARGP_NO_HELP */
39
 
#include <stdbool.h>            /* bool, false, true */
40
 
#include <sys/types.h>          /* pid_t, sig_atomic_t, uid_t, gid_t,
41
 
                                   getuid(), setgid(), setuid() */
 
26
#define _GNU_SOURCE             /* TEMP_FAILURE_RETRY(), getline(),
 
27
                                   O_CLOEXEC, pipe2() */
42
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#include <stddef.h>             /* size_t, NULL */
43
 
#include <iso646.h>             /* or, and, not */
44
 
#include <string.h>             /* strcmp(), strdup(), strchrnul(),
45
 
                                   strncmp(), strlen(), strcpy(),
46
 
                                   strsep(), strchr(), strsignal() */
47
 
#include <stdlib.h>             /* malloc(), free(), reallocarray(),
48
 
                                   realloc(), EXIT_SUCCESS */
49
 
#include <errno.h>              /* errno, EINTR, ENOMEM, ECHILD,
50
 
                                   error_t, EINVAL, EMFILE, ENFILE,
51
 
                                   ENOENT, ESRCH */
52
 
#include <stdint.h>             /* SIZE_MAX */
53
 
#define _GNU_SOURCE             /* strchrnul(), TEMP_FAILURE_RETRY(),
54
 
                                   getline(), asprintf(), O_CLOEXEC,
55
 
                                   scandirat(), pipe2() */
56
 
#include <unistd.h>             /* TEMP_FAILURE_RETRY(), ssize_t,
57
 
                                   write(), STDOUT_FILENO, uid_t,
58
 
                                   gid_t, getuid(), fchown(), close(),
59
 
                                   symlink(), setgid(), setuid(),
60
 
                                   faccessat(), X_OK, pipe(), pipe2(),
61
 
                                   fork(), _exit(), dup2(), fexecve(),
62
 
                                   read(), getpass() */
 
29
#include <stdlib.h>             /* malloc(), exit(), EXIT_SUCCESS,
 
30
                                   realloc() */
 
31
#include <stdbool.h>            /* bool, true, false */
 
32
#include <stdio.h>              /* fileno(), fprintf(),
 
33
                                   stderr, STDOUT_FILENO, fclose() */
 
34
#include <sys/types.h>          /* fstat(), struct stat, waitpid(),
 
35
                                   WIFEXITED(), WEXITSTATUS(), wait(),
 
36
                                   pid_t, uid_t, gid_t, getuid(),
 
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                                   getgid() */
 
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#include <sys/select.h>         /* fd_set, select(), FD_ZERO(),
 
39
                                   FD_SET(), FD_ISSET(), FD_CLR */
 
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#include <sys/wait.h>           /* wait(), waitpid(), WIFEXITED(),
 
41
                                   WEXITSTATUS(), WTERMSIG() */
 
42
#include <sys/stat.h>           /* struct stat, fstat(), S_ISREG() */
 
43
#include <iso646.h>             /* and, or, not */
 
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#include <dirent.h>             /* struct dirent, scandirat() */
 
45
#include <unistd.h>             /* fcntl(), F_GETFD, F_SETFD,
 
46
                                   FD_CLOEXEC, write(), STDOUT_FILENO,
 
47
                                   struct stat, fstat(), close(),
 
48
                                   setgid(), setuid(), S_ISREG(),
 
49
                                   faccessat() pipe2(), fork(),
 
50
                                   _exit(), dup2(), fexecve(), read()
 
51
                                */
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#include <fcntl.h>              /* fcntl(), F_GETFD, F_SETFD,
64
 
                                   FD_CLOEXEC, open(), O_RDONLY,
65
 
                                   O_CLOEXEC, openat() */
66
 
#include <sys/wait.h>           /* waitpid(), WNOHANG, WIFEXITED(),
67
 
                                   WEXITSTATUS(), WIFSIGNALED(),
68
 
                                   WTERMSIG(), wait() */
69
 
#include <error.h>              /* error() */
70
 
#include <stdio.h>              /* FILE, fprintf(), fopen(),
71
 
                                   getline(), fclose(), EOF,
72
 
                                   asprintf(), stderr */
73
 
#include <dirent.h>             /* struct dirent, scandirat(),
74
 
                                   alphasort() */
75
 
#include <sys/stat.h>           /* struct stat, fstat(), S_ISDIR(),
76
 
                                   lstat(), S_ISREG() */
77
 
#include <sys/select.h>         /* fd_set, FD_ZERO(), FD_SETSIZE,
78
 
                                   FD_SET(), select(), FD_CLR(),
79
 
                                   FD_ISSET() */
80
 
#include <signal.h>             /* struct sigaction, SA_NOCLDSTOP,
81
 
                                   sigemptyset(), sigaddset(),
82
 
                                   SIGCHLD, sigprocmask(), SIG_BLOCK,
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                                   SIG_UNBLOCK, kill(), SIGTERM */
 
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                                   FD_CLOEXEC, openat(), scandirat(),
 
54
                                   pipe2() */
 
55
#include <string.h>             /* strsep, strlen(), strsignal(),
 
56
                                   strcmp(), strncmp() */
 
57
#include <errno.h>              /* errno */
 
58
#include <argp.h>               /* struct argp_option, struct
 
59
                                   argp_state, struct argp,
 
60
                                   argp_parse(), ARGP_ERR_UNKNOWN,
 
61
                                   ARGP_KEY_END, ARGP_KEY_ARG,
 
62
                                   error_t */
 
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#include <signal.h>             /* struct sigaction, sigemptyset(),
 
64
                                   sigaddset(), sigaction(),
 
65
                                   sigprocmask(), SIG_BLOCK, SIGCHLD,
 
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                                   SIG_UNBLOCK, kill(), sig_atomic_t
 
67
                                */
 
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#include <errno.h>              /* errno, EBADF */
 
69
#include <inttypes.h>           /* intmax_t, PRIdMAX, strtoimax() */
84
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#include <sysexits.h>           /* EX_OSERR, EX_USAGE, EX_IOERR,
85
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                                   EX_CONFIG, EX_UNAVAILABLE, EX_OK */
86
 
#include <inttypes.h>           /* intmax_t, strtoimax(), PRIdMAX */
87
 
#include <fnmatch.h>            /* fnmatch(), FNM_FILE_NAME,
88
 
                                   FNM_PERIOD, FNM_NOMATCH */
 
72
#include <errno.h>              /* errno */
 
73
#include <error.h>              /* error() */
 
74
#include <fnmatch.h>            /* fnmatch() */
89
75
 
90
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#define BUFFER_SIZE 256
91
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193
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  /* Resize the pointed-to array to hold one more pointer */
194
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  char **new_array = NULL;
195
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  do {
196
 
#if defined(__GLIBC_PREREQ) and __GLIBC_PREREQ(2, 26)
197
 
    new_array = reallocarray(*array, (size_t)((*len) + 2),
198
 
                             sizeof(char *));
199
 
#else
200
 
    if(((size_t)((*len) + 2)) > (SIZE_MAX / sizeof(char *))){
201
 
      /* overflow */
202
 
      new_array = NULL;
203
 
      errno = ENOMEM;
204
 
    } else {
205
 
      new_array = realloc(*array, (size_t)((*len) + 2)
206
 
                          * sizeof(char *));
207
 
    }
208
 
#endif
 
182
    new_array = realloc(*array, sizeof(char *)
 
183
                        * (size_t) ((*len) + 2));
209
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  } while(new_array == NULL and errno == EINTR);
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  /* Malloc check */
211
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  if(new_array == NULL){
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        custom_argc += 1;
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        {
736
 
#if defined(__GLIBC_PREREQ) and __GLIBC_PREREQ(2, 26)
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          char **new_argv = reallocarray(custom_argv,
738
 
                                         (size_t)custom_argc + 1,
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                                         sizeof(char *));
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#else
741
 
          char **new_argv = NULL;
742
 
          if(((size_t)custom_argc + 1) > (SIZE_MAX / sizeof(char *))){
743
 
            /* overflow */
744
 
            errno = ENOMEM;
745
 
          } else {
746
 
            new_argv = realloc(custom_argv, ((size_t)custom_argc + 1)
747
 
                               * sizeof(char *));
748
 
          }
749
 
#endif
 
711
          char **new_argv = realloc(custom_argv, sizeof(char *)
 
712
                                    * ((size_t)custom_argc + 1));
750
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          if(new_argv == NULL){
751
 
            error(0, errno, "reallocarray");
 
714
            error(0, errno, "realloc");
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            exitstatus = EX_OSERR;
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            free(new_arg);
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            free(org_line);
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      }
874
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      close(plugindir_fd);
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    }
876
 
 
877
 
    /* Work around Debian bug #981302
878
 
       <https://bugs.debian.org/981302> */
879
 
    if(lstat("/dev/fd", &st) != 0 and errno == ENOENT){
880
 
      ret = symlink("/proc/self/fd", "/dev/fd");
881
 
      if(ret == -1){
882
 
        error(0, errno, "Failed to create /dev/fd symlink");
883
 
      }
884
 
    }
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  }
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840
  
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  /* Lower permissions */