3
3
* Mandos plugin runner - Run Mandos plugins
5
* Copyright © 2008-2014 Teddy Hogeborn
6
* Copyright © 2008-2014 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() */
564
564
case '?': /* --help */
565
565
state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
566
566
argp_state_help(state, state->out_stream, ARGP_HELP_STD_HELP);
567
__builtin_unreachable();
567
568
case -3: /* --usage */
568
569
state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
569
570
argp_state_help(state, state->out_stream,
570
571
ARGP_HELP_USAGE | ARGP_HELP_EXIT_OK);
572
__builtin_unreachable();
571
573
case 'V': /* --version */
572
574
fprintf(state->out_stream, "%s\n", argp_program_version);
573
575
exit(EXIT_SUCCESS);
701
704
custom_argc += 1;
703
706
char **new_argv = realloc(custom_argv, sizeof(char *)
707
* ((size_t)custom_argc + 1));
706
708
if(new_argv == NULL){
707
709
error(0, errno, "realloc");
708
710
exitstatus = EX_OSERR;
797
for(plugin *p = plugin_list; p != NULL; p=p->next){
799
for(plugin *p = plugin_list; p != NULL; p = p->next){
798
800
fprintf(stderr, "Plugin: %s has %d arguments\n",
799
801
p->name ? p->name : "Global", p->argc - 1);
800
802
for(char **a = p->argv; *a != NULL; a++){
810
812
if(getuid() == 0){
811
813
/* Work around Debian bug #633582:
812
<http://bugs.debian.org/633582> */
814
<https://bugs.debian.org/633582> */
813
815
int plugindir_fd = open(/* plugindir or */ PDIR, O_RDONLY);
814
816
if(plugindir_fd == -1){
815
817
if(errno != ENOENT){
896
#if __GLIBC_PREREQ(2, 15)
897
897
int numplugins = scandirat(dir_fd, ".", &direntries, good_name,
899
#else /* not __GLIBC_PREREQ(2, 15) */
900
int numplugins = scandir(plugindir != NULL ? plugindir : PDIR,
901
&direntries, good_name, alphasort);
902
#endif /* not __GLIBC_PREREQ(2, 15) */
903
#else /* not __GLIBC__ */
904
int numplugins = scandir(plugindir != NULL ? plugindir : PDIR,
905
&direntries, good_name, alphasort);
906
#endif /* not __GLIBC__ */
907
899
if(numplugins == -1){
908
900
error(0, errno, "Could not scan plugin dir");
909
901
direntries = NULL;
1104
1096
new_plugin->pid = pid;
1105
1097
new_plugin->fd = pipefd[0];
1100
fprintf(stderr, "Plugin %s started (PID %" PRIdMAX ")\n",
1101
new_plugin->name, (intmax_t) (new_plugin->pid));
1107
1104
/* Unblock SIGCHLD so signal handler can be run if this process
1108
1105
has already completed */
1109
1106
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1118
#if defined (__GNUC__) and defined (__GLIBC__)
1119
#if not __GLIBC_PREREQ(2, 16)
1120
#pragma GCC diagnostic push
1121
#pragma GCC diagnostic ignored "-Wsign-conversion"
1124
FD_SET(new_plugin->fd, &rfds_all); /* Spurious warning from
1125
-Wconversion in GNU libc
1127
#if defined (__GNUC__) and defined (__GLIBC__)
1128
#if not __GLIBC_PREREQ(2, 16)
1129
#pragma GCC diagnostic pop
1115
FD_SET(new_plugin->fd, &rfds_all);
1133
1117
if(maxfd < new_plugin->fd){
1134
1118
maxfd = new_plugin->fd;
1183
1167
(intmax_t) (proc->pid),
1184
1168
WTERMSIG(proc->status),
1185
1169
strsignal(WTERMSIG(proc->status)));
1186
} else if(WCOREDUMP(proc->status)){
1187
fprintf(stderr, "Plugin %s [%" PRIdMAX "] dumped"
1188
" core\n", proc->name, (intmax_t) (proc->pid));
1192
1173
/* Remove the plugin */
1193
#if defined (__GNUC__) and defined (__GLIBC__)
1194
#if not __GLIBC_PREREQ(2, 16)
1195
#pragma GCC diagnostic push
1196
#pragma GCC diagnostic ignored "-Wsign-conversion"
1199
FD_CLR(proc->fd, &rfds_all); /* Spurious warning from
1200
-Wconversion in GNU libc
1202
#if defined (__GNUC__) and defined (__GLIBC__)
1203
#if not __GLIBC_PREREQ(2, 16)
1204
#pragma GCC diagnostic pop
1174
FD_CLR(proc->fd, &rfds_all);
1208
1176
/* Block signal while modifying process_list */
1209
1177
ret = (int)TEMP_FAILURE_RETRY(sigprocmask
1251
1219
/* This process has not completed. Does it have any output? */
1252
#if defined (__GNUC__) and defined (__GLIBC__)
1253
#if not __GLIBC_PREREQ(2, 16)
1254
#pragma GCC diagnostic push
1255
#pragma GCC diagnostic ignored "-Wsign-conversion"
1258
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){ /* Spurious
1264
#if defined (__GNUC__) and defined (__GLIBC__)
1265
#if not __GLIBC_PREREQ(2, 16)
1266
#pragma GCC diagnostic pop
1220
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){
1269
1221
/* This process had nothing to say at this time */
1270
1222
proc = proc->next;
added
removed
plugin-runner.c
