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- Committer: Teddy Hogeborn
- Date: 2015-07-09 08:57:02 UTC
- mto: (237.7.594 trunk)
- mto: This revision was merged to the branch mainline in revision 325.
- Revision ID: teddy@recompile.se-20150709085702-7bsl6191yo2eusik
initramfs-tools-hook: Use Diffie-Hellman parameters file if available.
added
removed
plugin-runner.c
2
2
/*
3
3
* Mandos plugin runner - Run Mandos plugins
4
4
*
5
* Copyright © 2008-2017 Teddy Hogeborn
6
* Copyright © 2008-2017 Björn Påhlsson
7
*
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* This file is part of Mandos.
9
*
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* 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
*
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* Mandos is distributed in the hope that it will be useful, but
5
* Copyright © 2008-2014 Teddy Hogeborn
6
* Copyright © 2008-2014 Björn Påhlsson
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*
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* This program is free software: you can redistribute it and/or
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* 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
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14
* WITHOUT ANY WARRANTY; without even the implied warranty of
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15
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18
16
* General Public License for more details.
19
17
*
20
18
* You should have received a copy of the GNU General Public License
21
* along with Mandos. If not, see <http://www.gnu.org/licenses/>.
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* along with this program. If not, see
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* <http://www.gnu.org/licenses/>.
22
21
*
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* Contact the authors at <mandos@recompile.se>.
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23
*/
38
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#include <sys/select.h> /* fd_set, select(), FD_ZERO(),
39
38
FD_SET(), FD_ISSET(), FD_CLR */
40
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#include <sys/wait.h> /* wait(), waitpid(), WIFEXITED(),
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WEXITSTATUS(), WTERMSIG() */
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WEXITSTATUS(), WTERMSIG(),
41
WCOREDUMP() */
42
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#include <sys/stat.h> /* struct stat, fstat(), S_ISREG() */
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#include <iso646.h> /* and, or, not */
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#include <dirent.h> /* struct dirent, scandirat() */
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__attribute__((nonnull))
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static void free_plugin(plugin *plugin_node){
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free(plugin_node->name);
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for(char **arg = plugin_node->argv; *arg != NULL; arg++){
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free(*arg);
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318
}
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custom_argc += 1;
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{
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char **new_argv = realloc(custom_argv, sizeof(char *)
705
* ((size_t)custom_argc + 1));
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* ((unsigned int)
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custom_argc + 1));
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706
if(new_argv == NULL){
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error(0, errno, "realloc");
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exitstatus = EX_OSERR;
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}
795
795
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if(debug){
797
for(plugin *p = plugin_list; p != NULL; p = p->next){
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for(plugin *p = plugin_list; p != NULL; p=p->next){
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fprintf(stderr, "Plugin: %s has %d arguments\n",
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p->name ? p->name : "Global", p->argc - 1);
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for(char **a = p->argv; *a != NULL; a++){
809
809
810
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if(getuid() == 0){
811
811
/* Work around Debian bug #633582:
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<https://bugs.debian.org/633582> */
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<http://bugs.debian.org/633582> */
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int plugindir_fd = open(/* plugindir or */ PDIR, O_RDONLY);
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if(plugindir_fd == -1){
815
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if(errno != ENOENT){
827
827
}
828
828
}
829
829
}
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close(plugindir_fd);
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TEMP_FAILURE_RETRY(close(plugindir_fd));
831
831
}
832
832
}
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833
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return 1;
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}
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#ifdef __GLIBC__
896
#if __GLIBC_PREREQ(2, 15)
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int numplugins = scandirat(dir_fd, ".", &direntries, good_name,
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alphasort);
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#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__ */
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if(numplugins == -1){
898
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error(0, errno, "Could not scan plugin dir");
899
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direntries = NULL;
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ret = (int)TEMP_FAILURE_RETRY(fstat(plugin_fd, &st));
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if(ret == -1){
917
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error(0, errno, "stat");
918
close(plugin_fd);
928
TEMP_FAILURE_RETRY(close(plugin_fd));
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free(direntries[i]);
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continue;
921
931
}
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plugindir != NULL ? plugindir : PDIR,
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941
direntries[i]->d_name);
932
942
}
933
close(plugin_fd);
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TEMP_FAILURE_RETRY(close(plugin_fd));
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free(direntries[i]);
935
945
continue;
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946
}
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plugin *p = getplugin(direntries[i]->d_name);
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if(p == NULL){
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error(0, errno, "getplugin");
941
close(plugin_fd);
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TEMP_FAILURE_RETRY(close(plugin_fd));
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free(direntries[i]);
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continue;
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}
947
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fprintf(stderr, "Ignoring disabled plugin \"%s\"\n",
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direntries[i]->d_name);
949
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}
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close(plugin_fd);
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TEMP_FAILURE_RETRY(close(plugin_fd));
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free(direntries[i]);
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continue;
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}
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if(pipefd[0] >= FD_SETSIZE){
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fprintf(stderr, "pipe()[0] (%d) >= FD_SETSIZE (%d)", pipefd[0],
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FD_SETSIZE);
996
close(pipefd[0]);
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close(pipefd[1]);
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TEMP_FAILURE_RETRY(close(pipefd[0]));
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TEMP_FAILURE_RETRY(close(pipefd[1]));
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exitstatus = EX_OSERR;
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free(direntries[i]);
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goto fallback;
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1014
ret = set_cloexec_flag(pipefd[0]);
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1015
if(ret < 0){
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error(0, errno, "set_cloexec_flag");
1007
close(pipefd[0]);
1008
close(pipefd[1]);
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TEMP_FAILURE_RETRY(close(pipefd[0]));
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TEMP_FAILURE_RETRY(close(pipefd[1]));
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exitstatus = EX_OSERR;
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1020
free(direntries[i]);
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goto fallback;
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ret = set_cloexec_flag(pipefd[1]);
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1024
if(ret < 0){
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1025
error(0, errno, "set_cloexec_flag");
1016
close(pipefd[0]);
1017
close(pipefd[1]);
1026
TEMP_FAILURE_RETRY(close(pipefd[0]));
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TEMP_FAILURE_RETRY(close(pipefd[1]));
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1028
exitstatus = EX_OSERR;
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1029
free(direntries[i]);
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goto fallback;
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1049
error(0, errno, "fork");
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1050
TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
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&sigchld_action.sa_mask, NULL));
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close(pipefd[0]);
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close(pipefd[1]);
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TEMP_FAILURE_RETRY(close(pipefd[0]));
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TEMP_FAILURE_RETRY(close(pipefd[1]));
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exitstatus = EX_OSERR;
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free(direntries[i]);
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goto fallback;
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/* no return */
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1085
}
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/* Parent process */
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close(pipefd[1]); /* Close unused write end of pipe */
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close(plugin_fd);
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TEMP_FAILURE_RETRY(close(pipefd[1])); /* Close unused write end of
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pipe */
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TEMP_FAILURE_RETRY(close(plugin_fd));
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plugin *new_plugin = getplugin(direntries[i]->d_name);
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if(new_plugin == NULL){
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error(0, errno, "getplugin");
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1116
goto fallback;
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1117
}
1107
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1108
FD_SET(new_plugin->fd, &rfds_all);
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
1109
1133
1110
1134
if(maxfd < new_plugin->fd){
1111
1135
maxfd = new_plugin->fd;
1114
1138
1115
1139
free(direntries);
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1140
direntries = NULL;
1117
close(dir_fd);
1141
TEMP_FAILURE_RETRY(close(dir_fd));
1118
1142
dir_fd = -1;
1119
1143
free_plugin(getplugin(NULL));
1120
1144
1160
1184
(intmax_t) (proc->pid),
1161
1185
WTERMSIG(proc->status),
1162
1186
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));
1163
1190
}
1164
1191
}
1165
1192
1166
1193
/* Remove the plugin */
1167
FD_CLR(proc->fd, &rfds_all);
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
1168
1208
1169
1209
/* Block signal while modifying process_list */
1170
1210
ret = (int)TEMP_FAILURE_RETRY(sigprocmask
1210
1250
}
1211
1251
1212
1252
/* This process has not completed. Does it have any output? */
1213
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){
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
1214
1270
/* This process had nothing to say at this time */
1215
1271
proc = proc->next;
1216
1272
continue;
1286
1342
free(direntries);
1287
1343
1288
1344
if(dir_fd != -1){
1289
close(dir_fd);
1345
TEMP_FAILURE_RETRY(close(dir_fd));
1290
1346
}
1291
1347
1292
1348
/* Kill the processes */
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0