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() */
701
701
custom_argc += 1;
703
703
char **new_argv = realloc(custom_argv, sizeof(char *)
704
* ((size_t)custom_argc + 1));
706
705
if(new_argv == NULL){
707
706
error(0, errno, "realloc");
708
707
exitstatus = EX_OSERR;
797
for(plugin *p = plugin_list; p != NULL; p=p->next){
796
for(plugin *p = plugin_list; p != NULL; p = p->next){
798
797
fprintf(stderr, "Plugin: %s has %d arguments\n",
799
798
p->name ? p->name : "Global", p->argc - 1);
800
799
for(char **a = p->argv; *a != NULL; a++){
810
809
if(getuid() == 0){
811
810
/* Work around Debian bug #633582:
812
<http://bugs.debian.org/633582> */
811
<https://bugs.debian.org/633582> */
813
812
int plugindir_fd = open(/* plugindir or */ PDIR, O_RDONLY);
814
813
if(plugindir_fd == -1){
815
814
if(errno != ENOENT){
896
#if __GLIBC_PREREQ(2, 15)
897
894
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
896
if(numplugins == -1){
908
897
error(0, errno, "Could not scan plugin dir");
909
898
direntries = NULL;
1003
992
if(pipefd[0] >= FD_SETSIZE){
1004
993
fprintf(stderr, "pipe()[0] (%d) >= FD_SETSIZE (%d)", pipefd[0],
1006
TEMP_FAILURE_RETRY(close(pipefd[0]));
1007
TEMP_FAILURE_RETRY(close(pipefd[1]));
1008
997
exitstatus = EX_OSERR;
1009
998
free(direntries[i]);
1014
1003
ret = set_cloexec_flag(pipefd[0]);
1016
1005
error(0, errno, "set_cloexec_flag");
1017
TEMP_FAILURE_RETRY(close(pipefd[0]));
1018
TEMP_FAILURE_RETRY(close(pipefd[1]));
1019
1008
exitstatus = EX_OSERR;
1020
1009
free(direntries[i]);
1023
1012
ret = set_cloexec_flag(pipefd[1]);
1025
1014
error(0, errno, "set_cloexec_flag");
1026
TEMP_FAILURE_RETRY(close(pipefd[0]));
1027
TEMP_FAILURE_RETRY(close(pipefd[1]));
1028
1017
exitstatus = EX_OSERR;
1029
1018
free(direntries[i]);
1049
1038
error(0, errno, "fork");
1050
1039
TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1051
1040
&sigchld_action.sa_mask, NULL));
1052
TEMP_FAILURE_RETRY(close(pipefd[0]));
1053
TEMP_FAILURE_RETRY(close(pipefd[1]));
1054
1043
exitstatus = EX_OSERR;
1055
1044
free(direntries[i]);
1084
1073
/* no return */
1086
1075
/* Parent process */
1087
TEMP_FAILURE_RETRY(close(pipefd[1])); /* Close unused write end of
1089
TEMP_FAILURE_RETRY(close(plugin_fd));
1076
close(pipefd[1]); /* Close unused write end of pipe */
1090
1078
plugin *new_plugin = getplugin(direntries[i]->d_name);
1091
1079
if(new_plugin == NULL){
1092
1080
error(0, errno, "getplugin");
1119
#if defined (__GNUC__) and defined (__GLIBC__)
1120
#if not __GLIBC_PREREQ(2, 16)
1121
#pragma GCC diagnostic push
1122
#pragma GCC diagnostic ignored "-Wsign-conversion"
1125
FD_SET(new_plugin->fd, &rfds_all); /* Spurious warning from
1126
-Wconversion in GNU libc
1128
#if defined (__GNUC__) and defined (__GLIBC__)
1129
#if not __GLIBC_PREREQ(2, 16)
1130
#pragma GCC diagnostic pop
1107
FD_SET(new_plugin->fd, &rfds_all);
1134
1109
if(maxfd < new_plugin->fd){
1135
1110
maxfd = new_plugin->fd;
1184
1159
(intmax_t) (proc->pid),
1185
1160
WTERMSIG(proc->status),
1186
1161
strsignal(WTERMSIG(proc->status)));
1187
} else if(WCOREDUMP(proc->status)){
1188
fprintf(stderr, "Plugin %s [%" PRIdMAX "] dumped"
1189
" core\n", proc->name, (intmax_t) (proc->pid));
1193
1165
/* Remove the plugin */
1194
#if defined (__GNUC__) and defined (__GLIBC__)
1195
#if not __GLIBC_PREREQ(2, 16)
1196
#pragma GCC diagnostic push
1197
#pragma GCC diagnostic ignored "-Wsign-conversion"
1200
FD_CLR(proc->fd, &rfds_all); /* Spurious warning from
1201
-Wconversion in GNU libc
1203
#if defined (__GNUC__) and defined (__GLIBC__)
1204
#if not __GLIBC_PREREQ(2, 16)
1205
#pragma GCC diagnostic pop
1166
FD_CLR(proc->fd, &rfds_all);
1209
1168
/* Block signal while modifying process_list */
1210
1169
ret = (int)TEMP_FAILURE_RETRY(sigprocmask
1252
1211
/* This process has not completed. Does it have any output? */
1253
#if defined (__GNUC__) and defined (__GLIBC__)
1254
#if not __GLIBC_PREREQ(2, 16)
1255
#pragma GCC diagnostic push
1256
#pragma GCC diagnostic ignored "-Wsign-conversion"
1259
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){ /* Spurious
1265
#if defined (__GNUC__) and defined (__GLIBC__)
1266
#if not __GLIBC_PREREQ(2, 16)
1267
#pragma GCC diagnostic pop
1212
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){
1270
1213
/* This process had nothing to say at this time */
1271
1214
proc = proc->next;
added
removed
plugin-runner.c
