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 © 2008-2018 Teddy Hogeborn
6
* Copyright © 2008-2018 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>.
37
38
#include <sys/select.h> /* fd_set, select(), FD_ZERO(),
38
39
FD_SET(), FD_ISSET(), FD_CLR */
39
40
#include <sys/wait.h> /* wait(), waitpid(), WIFEXITED(),
40
WEXITSTATUS(), WTERMSIG(),
41
WEXITSTATUS(), WTERMSIG() */
42
42
#include <sys/stat.h> /* struct stat, fstat(), S_ISREG() */
43
43
#include <iso646.h> /* and, or, not */
44
44
#include <dirent.h> /* struct dirent, scandirat() */
313
313
__attribute__((nonnull))
314
314
static void free_plugin(plugin *plugin_node){
316
for(char **arg = plugin_node->argv; *arg != NULL; arg++){
316
for(char **arg = (plugin_node->argv)+1; *arg != NULL; arg++){
319
free(plugin_node->name);
319
320
free(plugin_node->argv);
320
321
for(char **env = plugin_node->environ; *env != NULL; env++){
564
565
case '?': /* --help */
565
566
state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
566
567
argp_state_help(state, state->out_stream, ARGP_HELP_STD_HELP);
568
__builtin_unreachable();
567
569
case -3: /* --usage */
568
570
state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
569
571
argp_state_help(state, state->out_stream,
570
572
ARGP_HELP_USAGE | ARGP_HELP_EXIT_OK);
573
__builtin_unreachable();
571
574
case 'V': /* --version */
572
575
fprintf(state->out_stream, "%s\n", argp_program_version);
573
576
exit(EXIT_SUCCESS);
796
for(plugin *p = plugin_list; p != NULL; p=p->next){
800
for(plugin *p = plugin_list; p != NULL; p = p->next){
797
801
fprintf(stderr, "Plugin: %s has %d arguments\n",
798
802
p->name ? p->name : "Global", p->argc - 1);
799
803
for(char **a = p->argv; *a != NULL; a++){
809
813
if(getuid() == 0){
810
814
/* Work around Debian bug #633582:
811
<http://bugs.debian.org/633582> */
815
<https://bugs.debian.org/633582> */
812
816
int plugindir_fd = open(/* plugindir or */ PDIR, O_RDONLY);
813
817
if(plugindir_fd == -1){
814
818
if(errno != ENOENT){
895
#if __GLIBC_PREREQ(2, 15)
896
898
int numplugins = scandirat(dir_fd, ".", &direntries, good_name,
898
#else /* not __GLIBC_PREREQ(2, 15) */
899
int numplugins = scandir(plugindir != NULL ? plugindir : PDIR,
900
&direntries, good_name, alphasort);
901
#endif /* not __GLIBC_PREREQ(2, 15) */
902
#else /* not __GLIBC__ */
903
int numplugins = scandir(plugindir != NULL ? plugindir : PDIR,
904
&direntries, good_name, alphasort);
905
#endif /* not __GLIBC__ */
906
900
if(numplugins == -1){
907
901
error(0, errno, "Could not scan plugin dir");
908
902
direntries = NULL;
1103
1097
new_plugin->pid = pid;
1104
1098
new_plugin->fd = pipefd[0];
1101
fprintf(stderr, "Plugin %s started (PID %" PRIdMAX ")\n",
1102
new_plugin->name, (intmax_t) (new_plugin->pid));
1106
1105
/* Unblock SIGCHLD so signal handler can be run if this process
1107
1106
has already completed */
1108
1107
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1117
#if defined (__GNUC__) and defined (__GLIBC__)
1118
#if not __GLIBC_PREREQ(2, 16)
1119
#pragma GCC diagnostic push
1120
#pragma GCC diagnostic ignored "-Wsign-conversion"
1123
FD_SET(new_plugin->fd, &rfds_all); /* Spurious warning from
1124
-Wconversion in GNU libc
1126
#if defined (__GNUC__) and defined (__GLIBC__)
1127
#if not __GLIBC_PREREQ(2, 16)
1128
#pragma GCC diagnostic pop
1116
FD_SET(new_plugin->fd, &rfds_all);
1132
1118
if(maxfd < new_plugin->fd){
1133
1119
maxfd = new_plugin->fd;
1182
1168
(intmax_t) (proc->pid),
1183
1169
WTERMSIG(proc->status),
1184
1170
strsignal(WTERMSIG(proc->status)));
1185
} else if(WCOREDUMP(proc->status)){
1186
fprintf(stderr, "Plugin %s [%" PRIdMAX "] dumped"
1187
" core\n", proc->name, (intmax_t) (proc->pid));
1191
1174
/* Remove the plugin */
1192
#if defined (__GNUC__) and defined (__GLIBC__)
1193
#if not __GLIBC_PREREQ(2, 16)
1194
#pragma GCC diagnostic push
1195
#pragma GCC diagnostic ignored "-Wsign-conversion"
1198
FD_CLR(proc->fd, &rfds_all); /* Spurious warning from
1199
-Wconversion in GNU libc
1201
#if defined (__GNUC__) and defined (__GLIBC__)
1202
#if not __GLIBC_PREREQ(2, 16)
1203
#pragma GCC diagnostic pop
1175
FD_CLR(proc->fd, &rfds_all);
1207
1177
/* Block signal while modifying process_list */
1208
1178
ret = (int)TEMP_FAILURE_RETRY(sigprocmask
1250
1220
/* This process has not completed. Does it have any output? */
1251
#if defined (__GNUC__) and defined (__GLIBC__)
1252
#if not __GLIBC_PREREQ(2, 16)
1253
#pragma GCC diagnostic push
1254
#pragma GCC diagnostic ignored "-Wsign-conversion"
1257
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){ /* Spurious
1263
#if defined (__GNUC__) and defined (__GLIBC__)
1264
#if not __GLIBC_PREREQ(2, 16)
1265
#pragma GCC diagnostic pop
1221
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){
1268
1222
/* This process had nothing to say at this time */
1269
1223
proc = proc->next;
added
removed
plugin-runner.c
