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- Committer: Teddy Hogeborn
- Date: 2015-05-30 16:47:00 UTC
- Revision ID: teddy@recompile.se-20150530164700-77zrd7964gdhbk1f
mandos: Disable D-Bus if any DBusException is raised when connecting.
added
removed
plugin-runner.c
2
2
/*
3
3
* Mandos plugin runner - Run Mandos plugins
4
4
*
5
* Copyright © 2008-2016 Teddy Hogeborn
6
* Copyright © 2008-2016 Björn Påhlsson
5
* Copyright © 2008-2014 Teddy Hogeborn
6
* Copyright © 2008-2014 Björn Påhlsson
7
7
*
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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
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#define BUFFER_SIZE 256
77
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78
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#define PDIR "/lib/mandos/plugins.d"
79
#define PHDIR "/lib/mandos/plugin-helpers"
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#define AFILE "/conf/conf.d/mandos/plugin-runner.conf"
81
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82
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const char *argp_program_version = "plugin-runner " VERSION;
348
347
349
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int main(int argc, char *argv[]){
350
349
char *plugindir = NULL;
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char *pluginhelperdir = NULL;
352
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char *argfile = NULL;
353
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FILE *conffp;
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struct dirent **direntries = NULL;
416
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.doc = "Group ID the plugins will run as", .group = 3 },
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{ .name = "debug", .key = 132,
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.doc = "Debug mode", .group = 4 },
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{ .name = "plugin-helper-dir", .key = 133,
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.arg = "DIRECTORY",
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.doc = "Specify a different plugin helper directory",
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.group = 2 },
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/*
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* These reproduce what we would get without ARGP_NO_HELP
425
419
*/
551
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case 132: /* --debug */
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debug = true;
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break;
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case 133: /* --plugin-helper-dir */
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free(pluginhelperdir);
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pluginhelperdir = strdup(arg);
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if(pluginhelperdir != NULL){
558
errno = 0;
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}
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break;
561
548
/*
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* These reproduce what we would get without ARGP_NO_HELP
563
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*/
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case 130: /* --userid */
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case 131: /* --groupid */
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case 132: /* --debug */
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case 133: /* --plugin-helper-dir */
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case '?': /* --help */
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case -3: /* --usage */
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case 'V': /* --version */
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custom_argc += 1;
702
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{
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char **new_argv = realloc(custom_argv, sizeof(char *)
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* ((size_t)custom_argc + 1));
690
* ((unsigned int)
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custom_argc + 1));
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if(new_argv == NULL){
706
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error(0, errno, "realloc");
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exitstatus = EX_OSERR;
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goto fallback;
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}
776
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{
778
char *pluginhelperenv;
779
bool bret = true;
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ret = asprintf(&pluginhelperenv, "MANDOSPLUGINHELPERDIR=%s",
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pluginhelperdir != NULL ? pluginhelperdir : PHDIR);
782
if(ret != -1){
783
bret = add_environment(getplugin(NULL), pluginhelperenv, true);
784
}
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if(ret == -1 or not bret){
786
error(0, errno, "Failed to set MANDOSPLUGINHELPERDIR"
787
" environment variable to \"%s\" for all plugins\n",
788
pluginhelperdir != NULL ? pluginhelperdir : PHDIR);
789
}
790
if(ret != -1){
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free(pluginhelperenv);
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}
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}
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if(debug){
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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",
826
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}
827
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}
828
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}
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close(plugindir_fd);
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TEMP_FAILURE_RETRY(close(plugindir_fd));
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}
831
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}
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return 1;
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}
893
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#ifdef __GLIBC__
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#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) */
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int numplugins = scandir(plugindir != NULL ? plugindir : PDIR,
869
&direntries, good_name, alphasort);
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#endif /* not __GLIBC_PREREQ(2, 15) */
871
#else /* not __GLIBC__ */
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int numplugins = scandir(plugindir != NULL ? plugindir : PDIR,
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&direntries, good_name, alphasort);
874
#endif /* not __GLIBC__ */
896
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if(numplugins == -1){
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error(0, errno, "Could not scan plugin dir");
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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){
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error(0, errno, "stat");
917
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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plugindir != NULL ? plugindir : PDIR,
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direntries[i]->d_name);
931
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}
932
close(plugin_fd);
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TEMP_FAILURE_RETRY(close(plugin_fd));
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free(direntries[i]);
934
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continue;
935
914
}
937
916
plugin *p = getplugin(direntries[i]->d_name);
938
917
if(p == NULL){
939
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error(0, errno, "getplugin");
940
close(plugin_fd);
919
TEMP_FAILURE_RETRY(close(plugin_fd));
941
920
free(direntries[i]);
942
921
continue;
943
922
}
946
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fprintf(stderr, "Ignoring disabled plugin \"%s\"\n",
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direntries[i]->d_name);
948
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}
949
close(plugin_fd);
928
TEMP_FAILURE_RETRY(close(plugin_fd));
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929
free(direntries[i]);
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continue;
952
931
}
992
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if(pipefd[0] >= FD_SETSIZE){
993
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fprintf(stderr, "pipe()[0] (%d) >= FD_SETSIZE (%d)", pipefd[0],
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FD_SETSIZE);
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close(pipefd[0]);
996
close(pipefd[1]);
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TEMP_FAILURE_RETRY(close(pipefd[0]));
975
TEMP_FAILURE_RETRY(close(pipefd[1]));
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exitstatus = EX_OSERR;
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977
free(direntries[i]);
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goto fallback;
1003
982
ret = set_cloexec_flag(pipefd[0]);
1004
983
if(ret < 0){
1005
984
error(0, errno, "set_cloexec_flag");
1006
close(pipefd[0]);
1007
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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ret = set_cloexec_flag(pipefd[1]);
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992
if(ret < 0){
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error(0, errno, "set_cloexec_flag");
1015
close(pipefd[0]);
1016
close(pipefd[1]);
994
TEMP_FAILURE_RETRY(close(pipefd[0]));
995
TEMP_FAILURE_RETRY(close(pipefd[1]));
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996
exitstatus = EX_OSERR;
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free(direntries[i]);
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goto fallback;
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1017
error(0, errno, "fork");
1039
1018
TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1040
1019
&sigchld_action.sa_mask, NULL));
1041
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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1024
goto fallback;
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/* no return */
1074
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}
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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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goto fallback;
1105
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}
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1107
FD_SET(new_plugin->fd, &rfds_all);
1087
#if defined (__GNUC__) and defined (__GLIBC__)
1088
#if not __GLIBC_PREREQ(2, 16)
1089
#pragma GCC diagnostic push
1090
#pragma GCC diagnostic ignored "-Wsign-conversion"
1091
#endif
1092
#endif
1093
FD_SET(new_plugin->fd, &rfds_all); /* Spurious warning from
1094
-Wconversion in GNU libc
1095
before 2.16 */
1096
#if defined (__GNUC__) and defined (__GLIBC__)
1097
#if not __GLIBC_PREREQ(2, 16)
1098
#pragma GCC diagnostic pop
1099
#endif
1100
#endif
1108
1101
1109
1102
if(maxfd < new_plugin->fd){
1110
1103
maxfd = new_plugin->fd;
1113
1106
1114
1107
free(direntries);
1115
1108
direntries = NULL;
1116
close(dir_fd);
1109
TEMP_FAILURE_RETRY(close(dir_fd));
1117
1110
dir_fd = -1;
1118
1111
free_plugin(getplugin(NULL));
1119
1112
1166
1159
}
1167
1160
1168
1161
/* Remove the plugin */
1169
FD_CLR(proc->fd, &rfds_all);
1162
#if defined (__GNUC__) and defined (__GLIBC__)
1163
#if not __GLIBC_PREREQ(2, 16)
1164
#pragma GCC diagnostic push
1165
#pragma GCC diagnostic ignored "-Wsign-conversion"
1166
#endif
1167
#endif
1168
FD_CLR(proc->fd, &rfds_all); /* Spurious warning from
1169
-Wconversion in GNU libc
1170
before 2.16 */
1171
#if defined (__GNUC__) and defined (__GLIBC__)
1172
#if not __GLIBC_PREREQ(2, 16)
1173
#pragma GCC diagnostic pop
1174
#endif
1175
#endif
1170
1176
1171
1177
/* Block signal while modifying process_list */
1172
1178
ret = (int)TEMP_FAILURE_RETRY(sigprocmask
1212
1218
}
1213
1219
1214
1220
/* This process has not completed. Does it have any output? */
1215
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){
1221
#if defined (__GNUC__) and defined (__GLIBC__)
1222
#if not __GLIBC_PREREQ(2, 16)
1223
#pragma GCC diagnostic push
1224
#pragma GCC diagnostic ignored "-Wsign-conversion"
1225
#endif
1226
#endif
1227
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){ /* Spurious
1228
warning from
1229
-Wconversion
1230
in GNU libc
1231
before
1232
2.16 */
1233
#if defined (__GNUC__) and defined (__GLIBC__)
1234
#if not __GLIBC_PREREQ(2, 16)
1235
#pragma GCC diagnostic pop
1236
#endif
1237
#endif
1216
1238
/* This process had nothing to say at this time */
1217
1239
proc = proc->next;
1218
1240
continue;
1288
1310
free(direntries);
1289
1311
1290
1312
if(dir_fd != -1){
1291
close(dir_fd);
1313
TEMP_FAILURE_RETRY(close(dir_fd));
1292
1314
}
1293
1315
1294
1316
/* Kill the processes */
1314
1336
free_plugin_list();
1315
1337
1316
1338
free(plugindir);
1317
free(pluginhelperdir);
1318
1339
free(argfile);
1319
1340
1320
1341
return exitstatus;
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Version: 2.0.2.dev0