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 541
- compare with another revision
- download diff
- download tarball
- view history from revision 541
- Committer: Teddy Hogeborn
- Date: 2011-12-31 20:07:11 UTC
- mfrom: (535.1.9 wireless-network-hook)
- Revision ID: teddy@recompile.se-20111231200711-6dli3r8drftem57r
Merge new wireless network hook. Fix bridge network hook to use
hardware addresses instead of interface names. Implement and document
new "CONNECT" environment variable for network hooks.
hardware addresses instead of interface names. Implement and document
new "CONNECT" environment variable for network hooks.
- files removed:
- debian/mandos-client.examples
- debian/upstream
- files modified:
- .bzrignore
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
5
* Copyright © 2008-2011 Teddy Hogeborn
6
* Copyright © 2008-2011 Björn Påhlsson
7
7
*
8
8
* This program is free software: you can redistribute it and/or
9
9
* modify it under the terms of the GNU General Public License as
23
23
*/
24
24
25
25
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), getline(),
26
O_CLOEXEC, pipe2() */
26
asprintf(), O_CLOEXEC */
27
27
#include <stddef.h> /* size_t, NULL */
28
28
#include <stdlib.h> /* malloc(), exit(), EXIT_SUCCESS,
29
29
realloc() */
30
30
#include <stdbool.h> /* bool, true, false */
31
31
#include <stdio.h> /* fileno(), fprintf(),
32
stderr, STDOUT_FILENO, fclose() */
33
#include <sys/types.h> /* fstat(), struct stat, waitpid(),
34
WIFEXITED(), WEXITSTATUS(), wait(),
35
pid_t, uid_t, gid_t, getuid(),
36
getgid() */
32
stderr, STDOUT_FILENO */
33
#include <sys/types.h> /* DIR, fdopendir(), stat(), struct
34
stat, waitpid(), WIFEXITED(),
35
WEXITSTATUS(), wait(), pid_t,
36
uid_t, gid_t, getuid(), getgid(),
37
dirfd() */
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
41
WEXITSTATUS(), WTERMSIG(),
41
42
WCOREDUMP() */
42
#include <sys/stat.h> /* struct stat, fstat(), S_ISREG() */
43
#include <sys/stat.h> /* struct stat, stat(), S_ISREG() */
43
44
#include <iso646.h> /* and, or, not */
44
#include <dirent.h> /* struct dirent, scandirat() */
45
#include <unistd.h> /* fcntl(), F_GETFD, F_SETFD,
46
FD_CLOEXEC, write(), STDOUT_FILENO,
47
struct stat, fstat(), close(),
48
setgid(), setuid(), S_ISREG(),
49
faccessat() pipe2(), fork(),
50
_exit(), dup2(), fexecve(), read()
51
*/
45
#include <dirent.h> /* DIR, struct dirent, fdopendir(),
46
readdir(), closedir(), dirfd() */
47
#include <unistd.h> /* struct stat, stat(), S_ISREG(),
48
fcntl(), setuid(), setgid(),
49
F_GETFD, F_SETFD, FD_CLOEXEC,
50
access(), pipe(), fork(), close()
51
dup2(), STDOUT_FILENO, _exit(),
52
execv(), write(), read(),
53
close() */
52
54
#include <fcntl.h> /* fcntl(), F_GETFD, F_SETFD,
53
FD_CLOEXEC, openat(), scandirat(),
54
pipe2() */
55
#include <string.h> /* strsep, strlen(), strsignal(),
56
strcmp(), strncmp() */
55
FD_CLOEXEC */
56
#include <string.h> /* strsep, strlen(), asprintf(),
57
strsignal(), strcmp(), strncmp() */
57
58
#include <errno.h> /* errno */
58
59
#include <argp.h> /* struct argp_option, struct
59
60
argp_state, struct argp,
71
72
EX_CONFIG, EX_UNAVAILABLE, EX_OK */
72
73
#include <errno.h> /* errno */
73
74
#include <error.h> /* error() */
74
#include <fnmatch.h> /* fnmatch() */
75
75
76
76
#define BUFFER_SIZE 256
77
77
105
105
106
106
/* Gets an existing plugin based on name,
107
107
or if none is found, creates a new one */
108
__attribute__((warn_unused_result))
109
108
static plugin *getplugin(char *name){
110
109
/* Check for existing plugin with that name */
111
110
for(plugin *p = plugin_list; p != NULL; p = p->next){
172
171
}
173
172
174
173
/* Helper function for add_argument and add_environment */
175
__attribute__((nonnull, warn_unused_result))
174
__attribute__((nonnull))
176
175
static bool add_to_char_array(const char *new, char ***array,
177
176
int *len){
178
177
/* Resize the pointed-to array to hold one more pointer */
179
char **new_array = NULL;
180
178
do {
181
new_array = realloc(*array, sizeof(char *)
182
* (size_t) ((*len) + 2));
183
} while(new_array == NULL and errno == EINTR);
179
*array = realloc(*array, sizeof(char *)
180
* (size_t) ((*len) + 2));
181
} while(*array == NULL and errno == EINTR);
184
182
/* Malloc check */
185
if(new_array == NULL){
183
if(*array == NULL){
186
184
return false;
187
185
}
188
*array = new_array;
189
186
/* Make a copy of the new string */
190
187
char *copy;
191
188
do {
203
200
}
204
201
205
202
/* Add to a plugin's argument vector */
206
__attribute__((nonnull(2), warn_unused_result))
203
__attribute__((nonnull(2)))
207
204
static bool add_argument(plugin *p, const char *arg){
208
205
if(p == NULL){
209
206
return false;
212
209
}
213
210
214
211
/* Add to a plugin's environment */
215
__attribute__((nonnull(2), warn_unused_result))
212
__attribute__((nonnull(2)))
216
213
static bool add_environment(plugin *p, const char *def, bool replace){
217
214
if(p == NULL){
218
215
return false;
220
217
/* namelen = length of name of environment variable */
221
218
size_t namelen = (size_t)(strchrnul(def, '=') - def);
222
219
/* Search for this environment variable */
223
for(char **envdef = p->environ; *envdef != NULL; envdef++){
224
if(strncmp(*envdef, def, namelen + 1) == 0){
220
for(char **e = p->environ; *e != NULL; e++){
221
if(strncmp(*e, def, namelen + 1) == 0){
225
222
/* It already exists */
226
223
if(replace){
227
char *new_envdef;
224
char *new;
228
225
do {
229
new_envdef = realloc(*envdef, strlen(def) + 1);
230
} while(new_envdef == NULL and errno == EINTR);
231
if(new_envdef == NULL){
226
new = realloc(*e, strlen(def) + 1);
227
} while(new == NULL and errno == EINTR);
228
if(new == NULL){
232
229
return false;
233
230
}
234
*envdef = new_envdef;
235
strcpy(*envdef, def);
231
*e = new;
232
strcpy(*e, def);
236
233
}
237
234
return true;
238
235
}
240
237
return add_to_char_array(def, &(p->environ), &(p->envc));
241
238
}
242
239
243
#ifndef O_CLOEXEC
244
240
/*
245
241
* Based on the example in the GNU LibC manual chapter 13.13 "File
246
242
* Descriptor Flags".
247
243
| [[info:libc:Descriptor%20Flags][File Descriptor Flags]] |
248
244
*/
249
__attribute__((warn_unused_result))
250
245
static int set_cloexec_flag(int fd){
251
246
int ret = (int)TEMP_FAILURE_RETRY(fcntl(fd, F_GETFD, 0));
252
247
/* If reading the flags failed, return error indication now. */
257
252
return (int)TEMP_FAILURE_RETRY(fcntl(fd, F_SETFD,
258
253
ret | FD_CLOEXEC));
259
254
}
260
#endif /* not O_CLOEXEC */
261
255
262
256
263
257
/* Mark processes as completed when they exit, and save their exit
295
289
}
296
290
297
291
/* Prints out a password to stdout */
298
__attribute__((nonnull, warn_unused_result))
292
__attribute__((nonnull))
299
293
static bool print_out_password(const char *buffer, size_t length){
300
294
ssize_t ret;
301
295
for(size_t written = 0; written < length; written += (size_t)ret){
349
343
char *plugindir = NULL;
350
344
char *argfile = NULL;
351
345
FILE *conffp;
352
struct dirent **direntries = NULL;
346
size_t d_name_len;
347
DIR *dir = NULL;
348
struct dirent *dirst;
353
349
struct stat st;
354
350
fd_set rfds_all;
355
351
int ret, maxfd = 0;
363
359
.sa_flags = SA_NOCLDSTOP };
364
360
char **custom_argv = NULL;
365
361
int custom_argc = 0;
366
int dir_fd = -1;
367
362
368
363
/* Establish a signal handler */
369
364
sigemptyset(&sigchld_action.sa_mask);
440
435
break;
441
436
}
442
437
}
443
errno = 0;
444
438
}
445
439
break;
446
440
case 'G': /* --global-env */
447
if(add_environment(getplugin(NULL), arg, true)){
448
errno = 0;
449
}
441
add_environment(getplugin(NULL), arg, true);
450
442
break;
451
443
case 'o': /* --options-for */
452
444
{
469
461
break;
470
462
}
471
463
}
472
errno = 0;
473
464
}
474
465
break;
475
466
case 'E': /* --env-for */
487
478
errno = EINVAL;
488
479
break;
489
480
}
490
if(add_environment(getplugin(arg), envdef, true)){
491
errno = 0;
492
}
481
add_environment(getplugin(arg), envdef, true);
493
482
}
494
483
break;
495
484
case 'd': /* --disable */
497
486
plugin *p = getplugin(arg);
498
487
if(p != NULL){
499
488
p->disabled = true;
500
errno = 0;
501
489
}
502
490
}
503
491
break;
506
494
plugin *p = getplugin(arg);
507
495
if(p != NULL){
508
496
p->disabled = false;
509
errno = 0;
510
497
}
511
498
}
512
499
break;
513
500
case 128: /* --plugin-dir */
514
501
free(plugindir);
515
502
plugindir = strdup(arg);
516
if(plugindir != NULL){
517
errno = 0;
518
}
519
503
break;
520
504
case 129: /* --config-file */
521
505
/* This is already done by parse_opt_config_file() */
529
513
break;
530
514
}
531
515
uid = (uid_t)tmp_id;
532
errno = 0;
533
516
break;
534
517
case 131: /* --groupid */
535
518
tmp_id = strtoimax(arg, &tmp, 10);
540
523
break;
541
524
}
542
525
gid = (gid_t)tmp_id;
543
errno = 0;
544
526
break;
545
527
case 132: /* --debug */
546
528
debug = true;
594
576
case 129: /* --config-file */
595
577
free(argfile);
596
578
argfile = strdup(arg);
597
if(argfile != NULL){
598
errno = 0;
599
}
600
579
break;
601
580
case 130: /* --userid */
602
581
case 131: /* --groupid */
685
664
}
686
665
687
666
custom_argc += 1;
688
{
689
char **new_argv = realloc(custom_argv, sizeof(char *)
690
* ((unsigned int)
691
custom_argc + 1));
692
if(new_argv == NULL){
693
error(0, errno, "realloc");
694
exitstatus = EX_OSERR;
695
free(new_arg);
696
free(org_line);
697
goto fallback;
698
} else {
699
custom_argv = new_argv;
700
}
667
custom_argv = realloc(custom_argv, sizeof(char *)
668
* ((unsigned int) custom_argc + 1));
669
if(custom_argv == NULL){
670
error(0, errno, "realloc");
671
exitstatus = EX_OSERR;
672
free(org_line);
673
goto fallback;
701
674
}
702
675
custom_argv[custom_argc-1] = new_arg;
703
676
custom_argv[custom_argc] = NULL;
780
753
<http://bugs.debian.org/633582> */
781
754
int plugindir_fd = open(/* plugindir or */ PDIR, O_RDONLY);
782
755
if(plugindir_fd == -1){
783
if(errno != ENOENT){
784
error(0, errno, "open(\"" PDIR "\")");
785
}
756
error(0, errno, "open");
786
757
} else {
787
758
ret = (int)TEMP_FAILURE_RETRY(fstat(plugindir_fd, &st));
788
759
if(ret == -1){
800
771
}
801
772
802
773
/* Lower permissions */
803
ret = setgid(gid);
774
setgid(gid);
804
775
if(ret == -1){
805
776
error(0, errno, "setgid");
806
777
}
811
782
812
783
/* Open plugin directory with close_on_exec flag */
813
784
{
814
dir_fd = open(plugindir != NULL ? plugindir : PDIR, O_RDONLY |
815
#ifdef O_CLOEXEC
816
O_CLOEXEC
817
#else /* not O_CLOEXEC */
818
0
819
#endif /* not O_CLOEXEC */
820
);
785
int dir_fd = -1;
786
if(plugindir == NULL){
787
dir_fd = open(PDIR, O_RDONLY |
788
#ifdef O_CLOEXEC
789
O_CLOEXEC
790
#else /* not O_CLOEXEC */
791
0
792
#endif /* not O_CLOEXEC */
793
);
794
} else {
795
dir_fd = open(plugindir, O_RDONLY |
796
#ifdef O_CLOEXEC
797
O_CLOEXEC
798
#else /* not O_CLOEXEC */
799
0
800
#endif /* not O_CLOEXEC */
801
);
802
}
821
803
if(dir_fd == -1){
822
804
error(0, errno, "Could not open plugin dir");
823
805
exitstatus = EX_UNAVAILABLE;
829
811
ret = set_cloexec_flag(dir_fd);
830
812
if(ret < 0){
831
813
error(0, errno, "set_cloexec_flag");
814
TEMP_FAILURE_RETRY(close(dir_fd));
832
815
exitstatus = EX_OSERR;
833
816
goto fallback;
834
817
}
835
818
#endif /* O_CLOEXEC */
836
}
837
838
int good_name(const struct dirent * const dirent){
839
const char * const patterns[] = { ".*", "#*#", "*~", "*.dpkg-new",
840
"*.dpkg-old", "*.dpkg-bak",
841
"*.dpkg-divert", NULL };
842
#ifdef __GNUC__
843
#pragma GCC diagnostic push
844
#pragma GCC diagnostic ignored "-Wcast-qual"
845
#endif
846
for(const char **pat = (const char **)patterns;
847
*pat != NULL; pat++){
848
#ifdef __GNUC__
849
#pragma GCC diagnostic pop
850
#endif
851
if(fnmatch(*pat, dirent->d_name, FNM_FILE_NAME | FNM_PERIOD)
852
!= FNM_NOMATCH){
853
if(debug){
854
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
855
" matching pattern %s\n", dirent->d_name, *pat);
856
}
857
return 0;
858
}
819
820
dir = fdopendir(dir_fd);
821
if(dir == NULL){
822
error(0, errno, "Could not open plugin dir");
823
TEMP_FAILURE_RETRY(close(dir_fd));
824
exitstatus = EX_OSERR;
825
goto fallback;
859
826
}
860
return 1;
861
}
862
863
#ifdef __GLIBC__
864
#if __GLIBC_PREREQ(2, 15)
865
int numplugins = scandirat(dir_fd, ".", &direntries, good_name,
866
alphasort);
867
#else /* not __GLIBC_PREREQ(2, 15) */
868
int numplugins = scandir(plugindir != NULL ? plugindir : PDIR,
869
&direntries, good_name, alphasort);
870
#endif /* not __GLIBC_PREREQ(2, 15) */
871
#else /* not __GLIBC__ */
872
int numplugins = scandir(plugindir != NULL ? plugindir : PDIR,
873
&direntries, good_name, alphasort);
874
#endif /* not __GLIBC__ */
875
if(numplugins == -1){
876
error(0, errno, "Could not scan plugin dir");
877
direntries = NULL;
878
exitstatus = EX_OSERR;
879
goto fallback;
880
827
}
881
828
882
829
FD_ZERO(&rfds_all);
883
830
884
831
/* Read and execute any executable in the plugin directory*/
885
for(int i = 0; i < numplugins; i++){
886
887
int plugin_fd = openat(dir_fd, direntries[i]->d_name, O_RDONLY);
888
if(plugin_fd == -1){
889
error(0, errno, "Could not open plugin");
890
free(direntries[i]);
832
while(true){
833
do {
834
dirst = readdir(dir);
835
} while(dirst == NULL and errno == EINTR);
836
837
/* All directory entries have been processed */
838
if(dirst == NULL){
839
if(errno == EBADF){
840
error(0, errno, "readdir");
841
exitstatus = EX_IOERR;
842
goto fallback;
843
}
844
break;
845
}
846
847
d_name_len = strlen(dirst->d_name);
848
849
/* Ignore dotfiles, backup files and other junk */
850
{
851
bool bad_name = false;
852
853
const char const *bad_prefixes[] = { ".", "#", NULL };
854
855
const char const *bad_suffixes[] = { "~", "#", ".dpkg-new",
856
".dpkg-old",
857
".dpkg-bak",
858
".dpkg-divert", NULL };
859
for(const char **pre = bad_prefixes; *pre != NULL; pre++){
860
size_t pre_len = strlen(*pre);
861
if((d_name_len >= pre_len)
862
and strncmp((dirst->d_name), *pre, pre_len) == 0){
863
if(debug){
864
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
865
" with bad prefix %s\n", dirst->d_name, *pre);
866
}
867
bad_name = true;
868
break;
869
}
870
}
871
if(bad_name){
872
continue;
873
}
874
for(const char **suf = bad_suffixes; *suf != NULL; suf++){
875
size_t suf_len = strlen(*suf);
876
if((d_name_len >= suf_len)
877
and (strcmp((dirst->d_name) + d_name_len-suf_len, *suf)
878
== 0)){
879
if(debug){
880
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
881
" with bad suffix %s\n", dirst->d_name, *suf);
882
}
883
bad_name = true;
884
break;
885
}
886
}
887
888
if(bad_name){
889
continue;
890
}
891
}
892
893
char *filename;
894
if(plugindir == NULL){
895
ret = (int)TEMP_FAILURE_RETRY(asprintf(&filename, PDIR "/%s",
896
dirst->d_name));
897
} else {
898
ret = (int)TEMP_FAILURE_RETRY(asprintf(&filename, "%s/%s",
899
plugindir,
900
dirst->d_name));
901
}
902
if(ret < 0){
903
error(0, errno, "asprintf");
891
904
continue;
892
905
}
893
ret = (int)TEMP_FAILURE_RETRY(fstat(plugin_fd, &st));
906
907
ret = (int)TEMP_FAILURE_RETRY(stat(filename, &st));
894
908
if(ret == -1){
895
909
error(0, errno, "stat");
896
TEMP_FAILURE_RETRY(close(plugin_fd));
897
free(direntries[i]);
910
free(filename);
898
911
continue;
899
912
}
900
913
901
914
/* Ignore non-executable files */
902
915
if(not S_ISREG(st.st_mode)
903
or (TEMP_FAILURE_RETRY(faccessat(dir_fd, direntries[i]->d_name,
904
X_OK, 0)) != 0)){
916
or (TEMP_FAILURE_RETRY(access(filename, X_OK)) != 0)){
905
917
if(debug){
906
fprintf(stderr, "Ignoring plugin dir entry \"%s/%s\""
907
" with bad type or mode\n",
908
plugindir != NULL ? plugindir : PDIR,
909
direntries[i]->d_name);
918
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
919
" with bad type or mode\n", filename);
910
920
}
911
TEMP_FAILURE_RETRY(close(plugin_fd));
912
free(direntries[i]);
921
free(filename);
913
922
continue;
914
923
}
915
924
916
plugin *p = getplugin(direntries[i]->d_name);
925
plugin *p = getplugin(dirst->d_name);
917
926
if(p == NULL){
918
927
error(0, errno, "getplugin");
919
TEMP_FAILURE_RETRY(close(plugin_fd));
920
free(direntries[i]);
928
free(filename);
921
929
continue;
922
930
}
923
931
if(p->disabled){
924
932
if(debug){
925
933
fprintf(stderr, "Ignoring disabled plugin \"%s\"\n",
926
direntries[i]->d_name);
934
dirst->d_name);
927
935
}
928
TEMP_FAILURE_RETRY(close(plugin_fd));
929
free(direntries[i]);
936
free(filename);
930
937
continue;
931
938
}
932
939
{
946
953
}
947
954
}
948
955
}
949
/* If this plugin has any environment variables, we need to
950
duplicate the environment from this process, too. */
956
/* If this plugin has any environment variables, we will call
957
using execve and need to duplicate the environment from this
958
process, too. */
951
959
if(p->environ[0] != NULL){
952
960
for(char **e = environ; *e != NULL; e++){
953
961
if(not add_environment(p, *e, false)){
957
965
}
958
966
959
967
int pipefd[2];
960
#ifndef O_CLOEXEC
961
968
ret = (int)TEMP_FAILURE_RETRY(pipe(pipefd));
962
#else /* O_CLOEXEC */
963
ret = (int)TEMP_FAILURE_RETRY(pipe2(pipefd, O_CLOEXEC));
964
#endif /* O_CLOEXEC */
965
969
if(ret == -1){
966
970
error(0, errno, "pipe");
967
971
exitstatus = EX_OSERR;
968
free(direntries[i]);
969
goto fallback;
970
}
971
if(pipefd[0] >= FD_SETSIZE){
972
fprintf(stderr, "pipe()[0] (%d) >= FD_SETSIZE (%d)", pipefd[0],
973
FD_SETSIZE);
974
TEMP_FAILURE_RETRY(close(pipefd[0]));
975
TEMP_FAILURE_RETRY(close(pipefd[1]));
976
exitstatus = EX_OSERR;
977
free(direntries[i]);
978
goto fallback;
979
}
980
#ifndef O_CLOEXEC
972
goto fallback;
973
}
981
974
/* Ask OS to automatic close the pipe on exec */
982
975
ret = set_cloexec_flag(pipefd[0]);
983
976
if(ret < 0){
984
977
error(0, errno, "set_cloexec_flag");
985
TEMP_FAILURE_RETRY(close(pipefd[0]));
986
TEMP_FAILURE_RETRY(close(pipefd[1]));
987
978
exitstatus = EX_OSERR;
988
free(direntries[i]);
989
979
goto fallback;
990
980
}
991
981
ret = set_cloexec_flag(pipefd[1]);
992
982
if(ret < 0){
993
983
error(0, errno, "set_cloexec_flag");
994
TEMP_FAILURE_RETRY(close(pipefd[0]));
995
TEMP_FAILURE_RETRY(close(pipefd[1]));
996
984
exitstatus = EX_OSERR;
997
free(direntries[i]);
998
985
goto fallback;
999
986
}
1000
#endif /* not O_CLOEXEC */
1001
987
/* Block SIGCHLD until process is safely in process list */
1002
988
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_BLOCK,
1003
989
&sigchld_action.sa_mask,
1005
991
if(ret < 0){
1006
992
error(0, errno, "sigprocmask");
1007
993
exitstatus = EX_OSERR;
1008
free(direntries[i]);
1009
994
goto fallback;
1010
995
}
1011
996
/* Starting a new process to be watched */
1015
1000
} while(pid == -1 and errno == EINTR);
1016
1001
if(pid == -1){
1017
1002
error(0, errno, "fork");
1018
TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1019
&sigchld_action.sa_mask, NULL));
1020
TEMP_FAILURE_RETRY(close(pipefd[0]));
1021
TEMP_FAILURE_RETRY(close(pipefd[1]));
1022
1003
exitstatus = EX_OSERR;
1023
free(direntries[i]);
1024
1004
goto fallback;
1025
1005
}
1026
1006
if(pid == 0){
1042
1022
_exit(EX_OSERR);
1043
1023
}
1044
1024
1045
if(fexecve(plugin_fd, p->argv,
1046
(p->environ[0] != NULL) ? p->environ : environ) < 0){
1047
error(0, errno, "fexecve for %s/%s",
1048
plugindir != NULL ? plugindir : PDIR,
1049
direntries[i]->d_name);
1050
_exit(EX_OSERR);
1025
if(dirfd(dir) < 0){
1026
/* If dir has no file descriptor, we could not set FD_CLOEXEC
1027
above and must now close it manually here. */
1028
closedir(dir);
1029
}
1030
if(p->environ[0] == NULL){
1031
if(execv(filename, p->argv) < 0){
1032
error(0, errno, "execv for %s", filename);
1033
_exit(EX_OSERR);
1034
}
1035
} else {
1036
if(execve(filename, p->argv, p->environ) < 0){
1037
error(0, errno, "execve for %s", filename);
1038
_exit(EX_OSERR);
1039
}
1051
1040
}
1052
1041
/* no return */
1053
1042
}
1054
1043
/* Parent process */
1055
1044
TEMP_FAILURE_RETRY(close(pipefd[1])); /* Close unused write end of
1056
1045
pipe */
1057
TEMP_FAILURE_RETRY(close(plugin_fd));
1058
plugin *new_plugin = getplugin(direntries[i]->d_name);
1046
free(filename);
1047
plugin *new_plugin = getplugin(dirst->d_name);
1059
1048
if(new_plugin == NULL){
1060
1049
error(0, errno, "getplugin");
1061
1050
ret = (int)(TEMP_FAILURE_RETRY
1065
1054
error(0, errno, "sigprocmask");
1066
1055
}
1067
1056
exitstatus = EX_OSERR;
1068
free(direntries[i]);
1069
1057
goto fallback;
1070
1058
}
1071
free(direntries[i]);
1072
1059
1073
1060
new_plugin->pid = pid;
1074
1061
new_plugin->fd = pipefd[0];
1084
1071
goto fallback;
1085
1072
}
1086
1073
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
1074
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
1075
-Wconversion */
1101
1076
1102
1077
if(maxfd < new_plugin->fd){
1103
1078
maxfd = new_plugin->fd;
1104
1079
}
1105
1080
}
1106
1081
1107
free(direntries);
1108
direntries = NULL;
1109
TEMP_FAILURE_RETRY(close(dir_fd));
1110
dir_fd = -1;
1082
TEMP_FAILURE_RETRY(closedir(dir));
1083
dir = NULL;
1111
1084
free_plugin(getplugin(NULL));
1112
1085
1113
1086
for(plugin *p = plugin_list; p != NULL; p = p->next){
1159
1132
}
1160
1133
1161
1134
/* Remove the plugin */
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
1135
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
1136
-Wconversion */
1176
1137
1177
1138
/* Block signal while modifying process_list */
1178
1139
ret = (int)TEMP_FAILURE_RETRY(sigprocmask
1218
1179
}
1219
1180
1220
1181
/* This process has not completed. Does it have any output? */
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
1182
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){ /* Spurious
1228
1183
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
1184
-Wconversion */
1238
1185
/* This process had nothing to say at this time */
1239
1186
proc = proc->next;
1240
1187
continue;
1241
1188
}
1242
1189
/* Before reading, make the process' data buffer large enough */
1243
1190
if(proc->buffer_length + BUFFER_SIZE > proc->buffer_size){
1244
char *new_buffer = realloc(proc->buffer, proc->buffer_size
1245
+ (size_t) BUFFER_SIZE);
1246
if(new_buffer == NULL){
1191
proc->buffer = realloc(proc->buffer, proc->buffer_size
1192
+ (size_t) BUFFER_SIZE);
1193
if(proc->buffer == NULL){
1247
1194
error(0, errno, "malloc");
1248
1195
exitstatus = EX_OSERR;
1249
1196
goto fallback;
1250
1197
}
1251
proc->buffer = new_buffer;
1252
1198
proc->buffer_size += BUFFER_SIZE;
1253
1199
}
1254
1200
/* Read from the process */
1307
1253
free(custom_argv);
1308
1254
}
1309
1255
1310
free(direntries);
1311
1312
if(dir_fd != -1){
1313
TEMP_FAILURE_RETRY(close(dir_fd));
1256
if(dir != NULL){
1257
closedir(dir);
1314
1258
}
1315
1259
1316
1260
/* Kill the processes */
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0