3
3
* Mandos plugin runner - Run Mandos plugins
5
* Copyright © 2008-2016 Teddy Hogeborn
6
* Copyright © 2008-2016 Björn Påhlsson
8
* This program is free software: you can redistribute it and/or
9
* modify it under the terms of the GNU General Public License as
10
* published by the Free Software Foundation, either version 3 of the
11
* License, or (at your option) any later version.
13
* This program is distributed in the hope that it will be useful, but
5
* Copyright © 2008-2020 Teddy Hogeborn
6
* Copyright © 2008-2020 Björn Påhlsson
8
* This file is part of Mandos.
10
* 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
12
* the Free Software Foundation, either version 3 of the License, or
13
* (at your option) any later version.
15
* Mandos is distributed in the hope that it will be useful, but
14
16
* WITHOUT ANY WARRANTY; without even the implied warranty of
15
17
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16
18
* General Public License for more details.
18
20
* You should have received a copy of the GNU General Public License
19
* along with this program. If not, see
20
* <http://www.gnu.org/licenses/>.
21
* along with Mandos. If not, see <http://www.gnu.org/licenses/>.
22
23
* Contact the authors at <mandos@recompile.se>.
25
26
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), getline(),
26
27
O_CLOEXEC, pipe2() */
27
28
#include <stddef.h> /* size_t, NULL */
28
#include <stdlib.h> /* malloc(), exit(), EXIT_SUCCESS,
29
#include <stdlib.h> /* malloc(), reallocarray(), realloc(),
30
EXIT_SUCCESS, exit() */
30
31
#include <stdbool.h> /* bool, true, false */
31
32
#include <stdio.h> /* fileno(), fprintf(),
32
33
stderr, STDOUT_FILENO, fclose() */
178
179
/* Resize the pointed-to array to hold one more pointer */
179
180
char **new_array = NULL;
181
new_array = realloc(*array, sizeof(char *)
182
* (size_t) ((*len) + 2));
182
#if defined(__GLIBC_PREREQ) and __GLIBC_PREREQ(2, 26)
183
new_array = reallocarray(*array, (size_t)((*len) + 2),
186
if(((size_t)((*len) + 2)) > (SIZE_MAX / sizeof(char *))){
191
new_array = realloc(*array, (size_t)((*len) + 2)
183
195
} while(new_array == NULL and errno == EINTR);
184
196
/* Malloc check */
185
197
if(new_array == NULL){
312
324
__attribute__((nonnull))
313
325
static void free_plugin(plugin *plugin_node){
315
for(char **arg = plugin_node->argv; *arg != NULL; arg++){
327
for(char **arg = (plugin_node->argv)+1; *arg != NULL; arg++){
330
free(plugin_node->name);
318
331
free(plugin_node->argv);
319
332
for(char **env = plugin_node->environ; *env != NULL; env++){
563
576
case '?': /* --help */
564
577
state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
565
578
argp_state_help(state, state->out_stream, ARGP_HELP_STD_HELP);
579
__builtin_unreachable();
566
580
case -3: /* --usage */
567
581
state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
568
582
argp_state_help(state, state->out_stream,
569
583
ARGP_HELP_USAGE | ARGP_HELP_EXIT_OK);
584
__builtin_unreachable();
570
585
case 'V': /* --version */
571
586
fprintf(state->out_stream, "%s\n", argp_program_version);
572
587
exit(EXIT_SUCCESS);
700
720
custom_argc += 1;
702
char **new_argv = realloc(custom_argv, sizeof(char *)
703
* ((size_t)custom_argc + 1));
722
#if defined(__GLIBC_PREREQ) and __GLIBC_PREREQ(2, 26)
723
char **new_argv = reallocarray(custom_argv, (size_t)custom_argc + 1,
726
char **new_argv = NULL;
727
if(((size_t)custom_argc + 1) > (SIZE_MAX / sizeof(char *))){
731
new_argv = realloc(custom_argv, ((size_t)custom_argc + 1)
704
735
if(new_argv == NULL){
705
error(0, errno, "realloc");
736
error(0, errno, "reallocarray");
706
737
exitstatus = EX_OSERR;
1092
1123
new_plugin->pid = pid;
1093
1124
new_plugin->fd = pipefd[0];
1127
fprintf(stderr, "Plugin %s started (PID %" PRIdMAX ")\n",
1128
new_plugin->name, (intmax_t) (new_plugin->pid));
1095
1131
/* Unblock SIGCHLD so signal handler can be run if this process
1096
1132
has already completed */
1097
1133
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,