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- Committer: Teddy Hogeborn
- Date: 2012-05-05 10:52:11 UTC
- Revision ID: teddy@recompile.se-20120505105211-58z3hyjfzep3z2q9
* mandos: White space and other misc. format fixes only.
- 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 © 2008-2012 Teddy Hogeborn
6
* Copyright © 2008-2012 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