To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to plugin-runner.c
- browse files at revision 931
- compare with another revision
- download diff
- download tarball
- view history from revision 931
- Committer: Teddy Hogeborn
- Date: 2018-02-10 21:07:42 UTC
- mfrom: (237.4.94 release)
- Revision ID: teddy@recompile.se-20180210210742-v7hu1g3x5jpix3zx
Merge from release branch
added
removed
plugin-runner.c
2
2
/*
3
3
* Mandos plugin runner - Run Mandos plugins
4
4
*
5
* Copyright © 2008-2014 Teddy Hogeborn
6
* Copyright © 2008-2014 Björn Påhlsson
7
*
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.
12
*
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
7
*
8
* This file is part of Mandos.
9
*
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.
14
*
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.
17
19
*
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/>.
21
22
*
22
23
* Contact the authors at <mandos@recompile.se>.
23
24
*/
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
WCOREDUMP() */
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){
315
315
316
free(plugin_node->name);
316
317
for(char **arg = plugin_node->argv; *arg != NULL; arg++){
317
318
free(*arg);
318
319
}
701
702
custom_argc += 1;
702
703
{
703
704
char **new_argv = realloc(custom_argv, sizeof(char *)
704
* ((unsigned int)
705
custom_argc + 1));
705
* ((size_t)custom_argc + 1));
706
706
if(new_argv == NULL){
707
707
error(0, errno, "realloc");
708
708
exitstatus = EX_OSERR;
794
794
}
795
795
796
796
if(debug){
797
for(plugin *p = plugin_list; p != NULL; p=p->next){
797
for(plugin *p = plugin_list; p != NULL; p = p->next){
798
798
fprintf(stderr, "Plugin: %s has %d arguments\n",
799
799
p->name ? p->name : "Global", p->argc - 1);
800
800
for(char **a = p->argv; *a != NULL; a++){
809
809
810
810
if(getuid() == 0){
811
811
/* Work around Debian bug #633582:
812
<http://bugs.debian.org/633582> */
812
<https://bugs.debian.org/633582> */
813
813
int plugindir_fd = open(/* plugindir or */ PDIR, O_RDONLY);
814
814
if(plugindir_fd == -1){
815
815
if(errno != ENOENT){
827
827
}
828
828
}
829
829
}
830
TEMP_FAILURE_RETRY(close(plugindir_fd));
830
close(plugindir_fd);
831
831
}
832
832
}
833
833
892
892
return 1;
893
893
}
894
894
895
#ifdef __GLIBC__
896
#if __GLIBC_PREREQ(2, 15)
897
895
int numplugins = scandirat(dir_fd, ".", &direntries, good_name,
898
896
alphasort);
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
897
if(numplugins == -1){
908
898
error(0, errno, "Could not scan plugin dir");
909
899
direntries = NULL;
925
915
ret = (int)TEMP_FAILURE_RETRY(fstat(plugin_fd, &st));
926
916
if(ret == -1){
927
917
error(0, errno, "stat");
928
TEMP_FAILURE_RETRY(close(plugin_fd));
918
close(plugin_fd);
929
919
free(direntries[i]);
930
920
continue;
931
921
}
940
930
plugindir != NULL ? plugindir : PDIR,
941
931
direntries[i]->d_name);
942
932
}
943
TEMP_FAILURE_RETRY(close(plugin_fd));
933
close(plugin_fd);
944
934
free(direntries[i]);
945
935
continue;
946
936
}
948
938
plugin *p = getplugin(direntries[i]->d_name);
949
939
if(p == NULL){
950
940
error(0, errno, "getplugin");
951
TEMP_FAILURE_RETRY(close(plugin_fd));
941
close(plugin_fd);
952
942
free(direntries[i]);
953
943
continue;
954
944
}
957
947
fprintf(stderr, "Ignoring disabled plugin \"%s\"\n",
958
948
direntries[i]->d_name);
959
949
}
960
TEMP_FAILURE_RETRY(close(plugin_fd));
950
close(plugin_fd);
961
951
free(direntries[i]);
962
952
continue;
963
953
}
1003
993
if(pipefd[0] >= FD_SETSIZE){
1004
994
fprintf(stderr, "pipe()[0] (%d) >= FD_SETSIZE (%d)", pipefd[0],
1005
995
FD_SETSIZE);
1006
TEMP_FAILURE_RETRY(close(pipefd[0]));
1007
TEMP_FAILURE_RETRY(close(pipefd[1]));
996
close(pipefd[0]);
997
close(pipefd[1]);
1008
998
exitstatus = EX_OSERR;
1009
999
free(direntries[i]);
1010
1000
goto fallback;
1014
1004
ret = set_cloexec_flag(pipefd[0]);
1015
1005
if(ret < 0){
1016
1006
error(0, errno, "set_cloexec_flag");
1017
TEMP_FAILURE_RETRY(close(pipefd[0]));
1018
TEMP_FAILURE_RETRY(close(pipefd[1]));
1007
close(pipefd[0]);
1008
close(pipefd[1]);
1019
1009
exitstatus = EX_OSERR;
1020
1010
free(direntries[i]);
1021
1011
goto fallback;
1023
1013
ret = set_cloexec_flag(pipefd[1]);
1024
1014
if(ret < 0){
1025
1015
error(0, errno, "set_cloexec_flag");
1026
TEMP_FAILURE_RETRY(close(pipefd[0]));
1027
TEMP_FAILURE_RETRY(close(pipefd[1]));
1016
close(pipefd[0]);
1017
close(pipefd[1]);
1028
1018
exitstatus = EX_OSERR;
1029
1019
free(direntries[i]);
1030
1020
goto fallback;
1049
1039
error(0, errno, "fork");
1050
1040
TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1051
1041
&sigchld_action.sa_mask, NULL));
1052
TEMP_FAILURE_RETRY(close(pipefd[0]));
1053
TEMP_FAILURE_RETRY(close(pipefd[1]));
1042
close(pipefd[0]);
1043
close(pipefd[1]);
1054
1044
exitstatus = EX_OSERR;
1055
1045
free(direntries[i]);
1056
1046
goto fallback;
1084
1074
/* no return */
1085
1075
}
1086
1076
/* Parent process */
1087
TEMP_FAILURE_RETRY(close(pipefd[1])); /* Close unused write end of
1088
pipe */
1089
TEMP_FAILURE_RETRY(close(plugin_fd));
1077
close(pipefd[1]); /* Close unused write end of pipe */
1078
close(plugin_fd);
1090
1079
plugin *new_plugin = getplugin(direntries[i]->d_name);
1091
1080
if(new_plugin == NULL){
1092
1081
error(0, errno, "getplugin");
1116
1105
goto fallback;
1117
1106
}
1118
1107
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"
1123
#endif
1124
#endif
1125
FD_SET(new_plugin->fd, &rfds_all); /* Spurious warning from
1126
-Wconversion in GNU libc
1127
before 2.16 */
1128
#if defined (__GNUC__) and defined (__GLIBC__)
1129
#if not __GLIBC_PREREQ(2, 16)
1130
#pragma GCC diagnostic pop
1131
#endif
1132
#endif
1108
FD_SET(new_plugin->fd, &rfds_all);
1133
1109
1134
1110
if(maxfd < new_plugin->fd){
1135
1111
maxfd = new_plugin->fd;
1138
1114
1139
1115
free(direntries);
1140
1116
direntries = NULL;
1141
TEMP_FAILURE_RETRY(close(dir_fd));
1117
close(dir_fd);
1142
1118
dir_fd = -1;
1143
1119
free_plugin(getplugin(NULL));
1144
1120
1184
1160
(intmax_t) (proc->pid),
1185
1161
WTERMSIG(proc->status),
1186
1162
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));
1190
1163
}
1191
1164
}
1192
1165
1193
1166
/* 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"
1198
#endif
1199
#endif
1200
FD_CLR(proc->fd, &rfds_all); /* Spurious warning from
1201
-Wconversion in GNU libc
1202
before 2.16 */
1203
#if defined (__GNUC__) and defined (__GLIBC__)
1204
#if not __GLIBC_PREREQ(2, 16)
1205
#pragma GCC diagnostic pop
1206
#endif
1207
#endif
1167
FD_CLR(proc->fd, &rfds_all);
1208
1168
1209
1169
/* Block signal while modifying process_list */
1210
1170
ret = (int)TEMP_FAILURE_RETRY(sigprocmask
1250
1210
}
1251
1211
1252
1212
/* 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"
1257
#endif
1258
#endif
1259
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){ /* Spurious
1260
warning from
1261
-Wconversion
1262
in GNU libc
1263
before
1264
2.16 */
1265
#if defined (__GNUC__) and defined (__GLIBC__)
1266
#if not __GLIBC_PREREQ(2, 16)
1267
#pragma GCC diagnostic pop
1268
#endif
1269
#endif
1213
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){
1270
1214
/* This process had nothing to say at this time */
1271
1215
proc = proc->next;
1272
1216
continue;
1342
1286
free(direntries);
1343
1287
1344
1288
if(dir_fd != -1){
1345
TEMP_FAILURE_RETRY(close(dir_fd));
1289
close(dir_fd);
1346
1290
}
1347
1291
1348
1292
/* Kill the processes */
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0