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- Committer: Teddy Hogeborn
- Date: 2015-07-12 01:57:54 UTC
- mto: (237.7.594 trunk)
- mto: This revision was merged to the branch mainline in revision 325.
- Revision ID: teddy@recompile.se-20150712015754-1lq7u2ejo7fdyfvi
* debian/mandos.prerm: Don't run init script, use only invoke-rc.d.
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
*
8
* 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
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* (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
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
*
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* This program is distributed in the hope that it will be useful, but
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* 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
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* 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
*
23
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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
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FD_SET(), FD_ISSET(), FD_CLR */
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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() */
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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() */
701
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custom_argc += 1;
702
702
{
703
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char **new_argv = realloc(custom_argv, sizeof(char *)
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* ((size_t)custom_argc + 1));
704
* ((unsigned int)
705
custom_argc + 1));
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706
if(new_argv == NULL){
706
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error(0, errno, "realloc");
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exitstatus = EX_OSERR;
793
794
}
794
795
795
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if(debug){
796
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);
799
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for(char **a = p->argv; *a != NULL; a++){
808
809
809
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if(getuid() == 0){
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811
/* Work around Debian bug #633582:
811
<https://bugs.debian.org/633582> */
812
<http://bugs.debian.org/633582> */
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int plugindir_fd = open(/* plugindir or */ PDIR, O_RDONLY);
813
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if(plugindir_fd == -1){
814
815
if(errno != ENOENT){
826
827
}
827
828
}
828
829
}
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close(plugindir_fd);
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TEMP_FAILURE_RETRY(close(plugindir_fd));
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831
}
831
832
}
832
833
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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) */
900
int numplugins = scandir(plugindir != NULL ? plugindir : PDIR,
901
&direntries, good_name, alphasort);
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#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__ */
896
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if(numplugins == -1){
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error(0, errno, "Could not scan plugin dir");
898
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direntries = NULL;
914
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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);
928
TEMP_FAILURE_RETRY(close(plugin_fd));
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929
free(direntries[i]);
919
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continue;
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}
929
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plugindir != NULL ? plugindir : PDIR,
930
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direntries[i]->d_name);
931
942
}
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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;
935
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}
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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");
940
close(plugin_fd);
951
TEMP_FAILURE_RETRY(close(plugin_fd));
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free(direntries[i]);
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continue;
943
954
}
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fprintf(stderr, "Ignoring disabled plugin \"%s\"\n",
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direntries[i]->d_name);
948
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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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}
992
1003
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);
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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;
1003
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ret = set_cloexec_flag(pipefd[0]);
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if(ret < 0){
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error(0, errno, "set_cloexec_flag");
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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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1020
free(direntries[i]);
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goto fallback;
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1023
ret = set_cloexec_flag(pipefd[1]);
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if(ret < 0){
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1025
error(0, errno, "set_cloexec_flag");
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close(pipefd[0]);
1016
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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1029
free(direntries[i]);
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1030
goto fallback;
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1049
error(0, errno, "fork");
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1050
TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1040
1051
&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]));
1053
TEMP_FAILURE_RETRY(close(pipefd[1]));
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1054
exitstatus = EX_OSERR;
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1055
free(direntries[i]);
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1056
goto fallback;
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1084
/* 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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goto fallback;
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1117
}
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1107
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
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#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
1133
1109
1134
if(maxfd < new_plugin->fd){
1110
1135
maxfd = new_plugin->fd;
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1138
1114
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free(direntries);
1115
1140
direntries = NULL;
1116
close(dir_fd);
1141
TEMP_FAILURE_RETRY(close(dir_fd));
1117
1142
dir_fd = -1;
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1143
free_plugin(getplugin(NULL));
1119
1144
1159
1184
(intmax_t) (proc->pid),
1160
1185
WTERMSIG(proc->status),
1161
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));
1162
1190
}
1163
1191
}
1164
1192
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1193
/* Remove the plugin */
1166
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
1167
1208
1168
1209
/* Block signal while modifying process_list */
1169
1210
ret = (int)TEMP_FAILURE_RETRY(sigprocmask
1209
1250
}
1210
1251
1211
1252
/* This process has not completed. Does it have any output? */
1212
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
1213
1270
/* This process had nothing to say at this time */
1214
1271
proc = proc->next;
1215
1272
continue;
1285
1342
free(direntries);
1286
1343
1287
1344
if(dir_fd != -1){
1288
close(dir_fd);
1345
TEMP_FAILURE_RETRY(close(dir_fd));
1289
1346
}
1290
1347
1291
1348
/* Kill the processes */
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0