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 699
- compare with another revision
- download diff
- download tarball
- view history from revision 699
- Committer: Teddy Hogeborn
- Date: 2014-06-13 22:13:56 UTC
- Revision ID: teddy@recompile.se-20140613221356-b9c36ctxmw4pelja
Fix free() of possibly uninitialized pointer in mandos-client.
* plugins.d/mandos-client (main): Initialize "direntries" to NULL so
it can be free()'d even if scandir()
fails.
* plugins.d/mandos-client (main): Initialize "direntries" to NULL so
it can be free()'d even if scandir()
fails.
- files added:
- DBUS-API
- debian/source
- debian/upstream
- network-hooks.d
- files modified:
- .bzrignore
added
removed
plugin-runner.c
1
/* -*- coding: utf-8 -*- */
1
/* -*- coding: utf-8; mode: c; mode: orgtbl -*- */
2
2
/*
3
3
* Mandos plugin runner - Run Mandos plugins
4
4
*
5
* Copyright © 2008,2009 Teddy Hogeborn
6
* Copyright © 2008,2009 Björn Påhlsson
5
* Copyright © 2008-2014 Teddy Hogeborn
6
* Copyright © 2008-2014 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
19
19
* along with this program. If not, see
20
20
* <http://www.gnu.org/licenses/>.
21
21
*
22
* Contact the authors at <mandos@fukt.bsnet.se>.
22
* Contact the authors at <mandos@recompile.se>.
23
23
*/
24
24
25
25
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), getline(),
26
asprintf() */
26
O_CLOEXEC */
27
27
#include <stddef.h> /* size_t, NULL */
28
#include <stdlib.h> /* malloc(), exit(), EXIT_FAILURE,
29
EXIT_SUCCESS, realloc() */
28
#include <stdlib.h> /* malloc(), exit(), EXIT_SUCCESS,
29
realloc() */
30
30
#include <stdbool.h> /* bool, true, false */
31
#include <stdio.h> /* perror, fileno(), fprintf(),
32
stderr, STDOUT_FILENO */
33
#include <sys/types.h> /* DIR, opendir(), stat(), struct
31
#include <stdio.h> /* fileno(), fprintf(),
32
stderr, STDOUT_FILENO, fclose() */
33
#include <sys/types.h> /* DIR, fdopendir(), fstat(), struct
34
34
stat, waitpid(), WIFEXITED(),
35
35
WEXITSTATUS(), wait(), pid_t,
36
36
uid_t, gid_t, getuid(), getgid(),
40
40
#include <sys/wait.h> /* wait(), waitpid(), WIFEXITED(),
41
41
WEXITSTATUS(), WTERMSIG(),
42
42
WCOREDUMP() */
43
#include <sys/stat.h> /* struct stat, stat(), S_ISREG() */
43
#include <sys/stat.h> /* struct stat, fstat(), S_ISREG() */
44
44
#include <iso646.h> /* and, or, not */
45
#include <dirent.h> /* DIR, struct dirent, opendir(),
45
#include <dirent.h> /* DIR, struct dirent, fdopendir(),
46
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() */
47
#include <unistd.h> /* fcntl(), F_GETFD, F_SETFD,
48
FD_CLOEXEC, write(), STDOUT_FILENO,
49
struct stat, fstat(), close(),
50
setgid(), setuid(), S_ISREG(),
51
faccessat() pipe(), fork(),
52
_exit(), dup2(), fexecve(), read()
53
*/
54
54
#include <fcntl.h> /* fcntl(), F_GETFD, F_SETFD,
55
FD_CLOEXEC */
56
#include <string.h> /* strsep, strlen(), asprintf(),
57
strsignal() */
55
FD_CLOEXEC, openat() */
56
#include <string.h> /* strsep, strlen(), strsignal(),
57
strcmp(), strncmp() */
58
58
#include <errno.h> /* errno */
59
59
#include <argp.h> /* struct argp_option, struct
60
60
argp_state, struct argp,
68
68
*/
69
69
#include <errno.h> /* errno, EBADF */
70
70
#include <inttypes.h> /* intmax_t, PRIdMAX, strtoimax() */
71
#include <sysexits.h> /* EX_OSERR, EX_USAGE, EX_IOERR,
72
EX_CONFIG, EX_UNAVAILABLE, EX_OK */
73
#include <errno.h> /* errno */
74
#include <error.h> /* error() */
75
#include <fnmatch.h> /* fnmatch() */
71
76
72
77
#define BUFFER_SIZE 256
73
78
75
80
#define AFILE "/conf/conf.d/mandos/plugin-runner.conf"
76
81
77
82
const char *argp_program_version = "plugin-runner " VERSION;
78
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
83
const char *argp_program_bug_address = "<mandos@recompile.se>";
79
84
80
85
typedef struct plugin{
81
86
char *name; /* can be NULL or any plugin name */
101
106
102
107
/* Gets an existing plugin based on name,
103
108
or if none is found, creates a new one */
109
__attribute__((warn_unused_result))
104
110
static plugin *getplugin(char *name){
105
/* Check for exiting plugin with that name */
111
/* Check for existing plugin with that name */
106
112
for(plugin *p = plugin_list; p != NULL; p = p->next){
107
113
if((p->name == name)
108
114
or (p->name and name and (strcmp(p->name, name) == 0))){
110
116
}
111
117
}
112
118
/* Create a new plugin */
113
plugin *new_plugin = malloc(sizeof(plugin));
119
plugin *new_plugin = NULL;
120
do {
121
new_plugin = malloc(sizeof(plugin));
122
} while(new_plugin == NULL and errno == EINTR);
114
123
if(new_plugin == NULL){
115
124
return NULL;
116
125
}
117
126
char *copy_name = NULL;
118
127
if(name != NULL){
119
copy_name = strdup(name);
128
do {
129
copy_name = strdup(name);
130
} while(copy_name == NULL and errno == EINTR);
120
131
if(copy_name == NULL){
132
int e = errno;
121
133
free(new_plugin);
134
errno = e;
122
135
return NULL;
123
136
}
124
137
}
128
141
.disabled = false,
129
142
.next = plugin_list };
130
143
131
new_plugin->argv = malloc(sizeof(char *) * 2);
144
do {
145
new_plugin->argv = malloc(sizeof(char *) * 2);
146
} while(new_plugin->argv == NULL and errno == EINTR);
132
147
if(new_plugin->argv == NULL){
148
int e = errno;
133
149
free(copy_name);
134
150
free(new_plugin);
151
errno = e;
135
152
return NULL;
136
153
}
137
154
new_plugin->argv[0] = copy_name;
138
155
new_plugin->argv[1] = NULL;
139
156
140
new_plugin->environ = malloc(sizeof(char *));
157
do {
158
new_plugin->environ = malloc(sizeof(char *));
159
} while(new_plugin->environ == NULL and errno == EINTR);
141
160
if(new_plugin->environ == NULL){
161
int e = errno;
142
162
free(copy_name);
143
163
free(new_plugin->argv);
144
164
free(new_plugin);
165
errno = e;
145
166
return NULL;
146
167
}
147
168
new_plugin->environ[0] = NULL;
152
173
}
153
174
154
175
/* Helper function for add_argument and add_environment */
176
__attribute__((nonnull, warn_unused_result))
155
177
static bool add_to_char_array(const char *new, char ***array,
156
178
int *len){
157
179
/* Resize the pointed-to array to hold one more pointer */
158
*array = realloc(*array, sizeof(char *)
159
* (size_t) ((*len) + 2));
180
char **new_array = NULL;
181
do {
182
new_array = realloc(*array, sizeof(char *)
183
* (size_t) ((*len) + 2));
184
} while(new_array == NULL and errno == EINTR);
160
185
/* Malloc check */
161
if(*array == NULL){
186
if(new_array == NULL){
162
187
return false;
163
188
}
189
*array = new_array;
164
190
/* Make a copy of the new string */
165
char *copy = strdup(new);
191
char *copy;
192
do {
193
copy = strdup(new);
194
} while(copy == NULL and errno == EINTR);
166
195
if(copy == NULL){
167
196
return false;
168
197
}
175
204
}
176
205
177
206
/* Add to a plugin's argument vector */
207
__attribute__((nonnull(2), warn_unused_result))
178
208
static bool add_argument(plugin *p, const char *arg){
179
209
if(p == NULL){
180
210
return false;
183
213
}
184
214
185
215
/* Add to a plugin's environment */
216
__attribute__((nonnull(2), warn_unused_result))
186
217
static bool add_environment(plugin *p, const char *def, bool replace){
187
218
if(p == NULL){
188
219
return false;
190
221
/* namelen = length of name of environment variable */
191
222
size_t namelen = (size_t)(strchrnul(def, '=') - def);
192
223
/* Search for this environment variable */
193
for(char **e = p->environ; *e != NULL; e++){
194
if(strncmp(*e, def, namelen + 1) == 0){
224
for(char **envdef = p->environ; *envdef != NULL; envdef++){
225
if(strncmp(*envdef, def, namelen + 1) == 0){
195
226
/* It already exists */
196
227
if(replace){
197
char *new = realloc(*e, strlen(def) + 1);
198
if(new == NULL){
228
char *new_envdef;
229
do {
230
new_envdef = realloc(*envdef, strlen(def) + 1);
231
} while(new_envdef == NULL and errno == EINTR);
232
if(new_envdef == NULL){
199
233
return false;
200
234
}
201
*e = new;
202
strcpy(*e, def);
235
*envdef = new_envdef;
236
strcpy(*envdef, def);
203
237
}
204
238
return true;
205
239
}
210
244
/*
211
245
* Based on the example in the GNU LibC manual chapter 13.13 "File
212
246
* Descriptor Flags".
213
* *Note File Descriptor Flags:(libc)Descriptor Flags.
247
| [[info:libc:Descriptor%20Flags][File Descriptor Flags]] |
214
248
*/
249
__attribute__((warn_unused_result))
215
250
static int set_cloexec_flag(int fd){
216
int ret = fcntl(fd, F_GETFD, 0);
251
int ret = (int)TEMP_FAILURE_RETRY(fcntl(fd, F_GETFD, 0));
217
252
/* If reading the flags failed, return error indication now. */
218
253
if(ret < 0){
219
254
return ret;
220
255
}
221
256
/* Store modified flag word in the descriptor. */
222
return fcntl(fd, F_SETFD, ret | FD_CLOEXEC);
257
return (int)TEMP_FAILURE_RETRY(fcntl(fd, F_SETFD,
258
ret | FD_CLOEXEC));
223
259
}
224
260
225
261
240
276
/* No child processes */
241
277
break;
242
278
}
243
perror("waitpid");
279
error(0, errno, "waitpid");
244
280
}
245
281
246
282
/* A child exited, find it in process_list */
258
294
}
259
295
260
296
/* Prints out a password to stdout */
297
__attribute__((nonnull, warn_unused_result))
261
298
static bool print_out_password(const char *buffer, size_t length){
262
299
ssize_t ret;
263
300
for(size_t written = 0; written < length; written += (size_t)ret){
271
308
}
272
309
273
310
/* Removes and free a plugin from the plugin list */
311
__attribute__((nonnull))
274
312
static void free_plugin(plugin *plugin_node){
275
313
276
314
for(char **arg = plugin_node->argv; *arg != NULL; arg++){
310
348
char *plugindir = NULL;
311
349
char *argfile = NULL;
312
350
FILE *conffp;
313
size_t d_name_len;
314
351
DIR *dir = NULL;
315
352
struct dirent *dirst;
316
353
struct stat st;
317
354
fd_set rfds_all;
318
355
int ret, maxfd = 0;
319
356
ssize_t sret;
320
intmax_t tmpmax;
321
357
uid_t uid = 65534;
322
358
gid_t gid = 65534;
323
359
bool debug = false;
327
363
.sa_flags = SA_NOCLDSTOP };
328
364
char **custom_argv = NULL;
329
365
int custom_argc = 0;
366
int dir_fd;
330
367
331
368
/* Establish a signal handler */
332
369
sigemptyset(&sigchld_action.sa_mask);
333
370
ret = sigaddset(&sigchld_action.sa_mask, SIGCHLD);
334
371
if(ret == -1){
335
perror("sigaddset");
336
exitstatus = EXIT_FAILURE;
372
error(0, errno, "sigaddset");
373
exitstatus = EX_OSERR;
337
374
goto fallback;
338
375
}
339
376
ret = sigaction(SIGCHLD, &sigchld_action, &old_sigchld_action);
340
377
if(ret == -1){
341
perror("sigaction");
342
exitstatus = EXIT_FAILURE;
378
error(0, errno, "sigaction");
379
exitstatus = EX_OSERR;
343
380
goto fallback;
344
381
}
345
382
377
414
.doc = "Group ID the plugins will run as", .group = 3 },
378
415
{ .name = "debug", .key = 132,
379
416
.doc = "Debug mode", .group = 4 },
417
/*
418
* These reproduce what we would get without ARGP_NO_HELP
419
*/
420
{ .name = "help", .key = '?',
421
.doc = "Give this help list", .group = -1 },
422
{ .name = "usage", .key = -3,
423
.doc = "Give a short usage message", .group = -1 },
424
{ .name = "version", .key = 'V',
425
.doc = "Print program version", .group = -1 },
380
426
{ .name = NULL }
381
427
};
382
428
383
error_t parse_opt(int key, char *arg, __attribute__((unused))
384
struct argp_state *state){
385
char *tmp;
429
__attribute__((nonnull(3)))
430
error_t parse_opt(int key, char *arg, struct argp_state *state){
431
errno = 0;
386
432
switch(key){
433
char *tmp;
434
intmax_t tmp_id;
387
435
case 'g': /* --global-options */
388
if(arg != NULL){
436
{
389
437
char *plugin_option;
390
438
while((plugin_option = strsep(&arg, ",")) != NULL){
391
if(plugin_option[0] == '\0'){
392
continue;
393
}
394
439
if(not add_argument(getplugin(NULL), plugin_option)){
395
perror("add_argument");
396
return ARGP_ERR_UNKNOWN;
440
break;
397
441
}
398
442
}
443
errno = 0;
399
444
}
400
445
break;
401
446
case 'G': /* --global-env */
402
if(arg == NULL){
403
break;
404
}
405
if(not add_environment(getplugin(NULL), arg, true)){
406
perror("add_environment");
447
if(add_environment(getplugin(NULL), arg, true)){
448
errno = 0;
407
449
}
408
450
break;
409
451
case 'o': /* --options-for */
410
if(arg != NULL){
411
char *plugin_name = strsep(&arg, ":");
412
if(plugin_name[0] == '\0'){
413
break;
414
}
415
char *plugin_option;
416
while((plugin_option = strsep(&arg, ",")) != NULL){
417
if(not add_argument(getplugin(plugin_name), plugin_option)){
418
perror("add_argument");
419
return ARGP_ERR_UNKNOWN;
452
{
453
char *option_list = strchr(arg, ':');
454
if(option_list == NULL){
455
argp_error(state, "No colon in \"%s\"", arg);
456
errno = EINVAL;
457
break;
458
}
459
*option_list = '\0';
460
option_list++;
461
if(arg[0] == '\0'){
462
argp_error(state, "Empty plugin name");
463
errno = EINVAL;
464
break;
465
}
466
char *option;
467
while((option = strsep(&option_list, ",")) != NULL){
468
if(not add_argument(getplugin(arg), option)){
469
break;
420
470
}
421
471
}
472
errno = 0;
422
473
}
423
474
break;
424
475
case 'E': /* --env-for */
425
if(arg == NULL){
426
break;
427
}
428
476
{
429
477
char *envdef = strchr(arg, ':');
430
478
if(envdef == NULL){
479
argp_error(state, "No colon in \"%s\"", arg);
480
errno = EINVAL;
431
481
break;
432
482
}
433
483
*envdef = '\0';
434
if(not add_environment(getplugin(arg), envdef+1, true)){
435
perror("add_environment");
484
envdef++;
485
if(arg[0] == '\0'){
486
argp_error(state, "Empty plugin name");
487
errno = EINVAL;
488
break;
489
}
490
if(add_environment(getplugin(arg), envdef, true)){
491
errno = 0;
436
492
}
437
493
}
438
494
break;
439
495
case 'd': /* --disable */
440
if(arg != NULL){
496
{
441
497
plugin *p = getplugin(arg);
442
if(p == NULL){
443
return ARGP_ERR_UNKNOWN;
498
if(p != NULL){
499
p->disabled = true;
500
errno = 0;
444
501
}
445
p->disabled = true;
446
502
}
447
503
break;
448
504
case 'e': /* --enable */
449
if(arg != NULL){
505
{
450
506
plugin *p = getplugin(arg);
451
if(p == NULL){
452
return ARGP_ERR_UNKNOWN;
507
if(p != NULL){
508
p->disabled = false;
509
errno = 0;
453
510
}
454
p->disabled = false;
455
511
}
456
512
break;
457
513
case 128: /* --plugin-dir */
458
514
free(plugindir);
459
515
plugindir = strdup(arg);
460
if(plugindir == NULL){
461
perror("strdup");
516
if(plugindir != NULL){
517
errno = 0;
462
518
}
463
519
break;
464
520
case 129: /* --config-file */
465
521
/* This is already done by parse_opt_config_file() */
466
522
break;
467
523
case 130: /* --userid */
468
errno = 0;
469
tmpmax = strtoimax(arg, &tmp, 10);
524
tmp_id = strtoimax(arg, &tmp, 10);
470
525
if(errno != 0 or tmp == arg or *tmp != '\0'
471
or tmpmax != (uid_t)tmpmax){
472
fprintf(stderr, "Bad user ID number: \"%s\", using %"
473
PRIdMAX "\n", arg, (intmax_t)uid);
474
} else {
475
uid = (uid_t)tmpmax;
526
or tmp_id != (uid_t)tmp_id){
527
argp_error(state, "Bad user ID number: \"%s\", using %"
528
PRIdMAX, arg, (intmax_t)uid);
529
break;
476
530
}
531
uid = (uid_t)tmp_id;
532
errno = 0;
477
533
break;
478
534
case 131: /* --groupid */
479
errno = 0;
480
tmpmax = strtoimax(arg, &tmp, 10);
535
tmp_id = strtoimax(arg, &tmp, 10);
481
536
if(errno != 0 or tmp == arg or *tmp != '\0'
482
or tmpmax != (gid_t)tmpmax){
483
fprintf(stderr, "Bad group ID number: \"%s\", using %"
484
PRIdMAX "\n", arg, (intmax_t)gid);
485
} else {
486
gid = (gid_t)tmpmax;
537
or tmp_id != (gid_t)tmp_id){
538
argp_error(state, "Bad group ID number: \"%s\", using %"
539
PRIdMAX, arg, (intmax_t)gid);
540
break;
487
541
}
542
gid = (gid_t)tmp_id;
543
errno = 0;
488
544
break;
489
545
case 132: /* --debug */
490
546
debug = true;
491
547
break;
548
/*
549
* These reproduce what we would get without ARGP_NO_HELP
550
*/
551
case '?': /* --help */
552
state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
553
argp_state_help(state, state->out_stream, ARGP_HELP_STD_HELP);
554
case -3: /* --usage */
555
state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
556
argp_state_help(state, state->out_stream,
557
ARGP_HELP_USAGE | ARGP_HELP_EXIT_OK);
558
case 'V': /* --version */
559
fprintf(state->out_stream, "%s\n", argp_program_version);
560
exit(EXIT_SUCCESS);
561
break;
492
562
/*
493
563
* When adding more options before this line, remember to also add a
494
564
* "case" to the "parse_opt_config_file" function below.
497
567
/* Cryptsetup always passes an argument, which is an empty
498
568
string if "none" was specified in /etc/crypttab. So if
499
569
argument was empty, we ignore it silently. */
500
if(arg[0] != '\0'){
501
fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
570
if(arg[0] == '\0'){
571
break;
502
572
}
503
break;
504
case ARGP_KEY_END:
505
break;
506
573
default:
507
574
return ARGP_ERR_UNKNOWN;
508
575
}
509
return 0;
576
return errno; /* Set to 0 at start */
510
577
}
511
578
512
579
/* This option parser is the same as parse_opt() above, except it
514
581
error_t parse_opt_config_file(int key, char *arg,
515
582
__attribute__((unused))
516
583
struct argp_state *state){
584
errno = 0;
517
585
switch(key){
518
586
case 'g': /* --global-options */
519
587
case 'G': /* --global-env */
526
594
case 129: /* --config-file */
527
595
free(argfile);
528
596
argfile = strdup(arg);
529
if(argfile == NULL){
530
perror("strdup");
597
if(argfile != NULL){
598
errno = 0;
531
599
}
532
600
break;
533
601
case 130: /* --userid */
534
602
case 131: /* --groupid */
535
603
case 132: /* --debug */
604
case '?': /* --help */
605
case -3: /* --usage */
606
case 'V': /* --version */
536
607
case ARGP_KEY_ARG:
537
case ARGP_KEY_END:
538
608
break;
539
609
default:
540
610
return ARGP_ERR_UNKNOWN;
541
611
}
542
return 0;
612
return errno;
543
613
}
544
614
545
615
struct argp argp = { .options = options,
549
619
550
620
/* Parse using parse_opt_config_file() in order to get the custom
551
621
config file location, if any. */
552
ret = argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
553
if(ret == ARGP_ERR_UNKNOWN){
554
fprintf(stderr, "Unknown error while parsing arguments\n");
555
exitstatus = EXIT_FAILURE;
622
ret = argp_parse(&argp, argc, argv,
623
ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
624
NULL, NULL);
625
switch(ret){
626
case 0:
627
break;
628
case ENOMEM:
629
default:
630
errno = ret;
631
error(0, errno, "argp_parse");
632
exitstatus = EX_OSERR;
633
goto fallback;
634
case EINVAL:
635
exitstatus = EX_USAGE;
556
636
goto fallback;
557
637
}
558
638
575
655
custom_argc = 1;
576
656
custom_argv = malloc(sizeof(char*) * 2);
577
657
if(custom_argv == NULL){
578
perror("malloc");
579
exitstatus = EXIT_FAILURE;
658
error(0, errno, "malloc");
659
exitstatus = EX_OSERR;
580
660
goto fallback;
581
661
}
582
662
custom_argv[0] = argv[0];
598
678
}
599
679
new_arg = strdup(p);
600
680
if(new_arg == NULL){
601
perror("strdup");
602
exitstatus = EXIT_FAILURE;
681
error(0, errno, "strdup");
682
exitstatus = EX_OSERR;
603
683
free(org_line);
604
684
goto fallback;
605
685
}
606
686
607
687
custom_argc += 1;
608
custom_argv = realloc(custom_argv, sizeof(char *)
609
* ((unsigned int) custom_argc + 1));
610
if(custom_argv == NULL){
611
perror("realloc");
612
exitstatus = EXIT_FAILURE;
613
free(org_line);
614
goto fallback;
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
}
615
701
}
616
702
custom_argv[custom_argc-1] = new_arg;
617
703
custom_argv[custom_argc] = NULL;
618
704
}
619
705
}
706
do {
707
ret = fclose(conffp);
708
} while(ret == EOF and errno == EINTR);
709
if(ret == EOF){
710
error(0, errno, "fclose");
711
exitstatus = EX_IOERR;
712
goto fallback;
713
}
620
714
free(org_line);
621
715
} else {
622
716
/* Check for harmful errors and go to fallback. Other errors might
623
717
not affect opening plugins */
624
718
if(errno == EMFILE or errno == ENFILE or errno == ENOMEM){
625
perror("fopen");
626
exitstatus = EXIT_FAILURE;
719
error(0, errno, "fopen");
720
exitstatus = EX_OSERR;
627
721
goto fallback;
628
722
}
629
723
}
630
/* If there was any arguments from configuration file,
631
pass them to parser as command arguments */
724
/* If there were any arguments from the configuration file, pass
725
them to parser as command line arguments */
632
726
if(custom_argv != NULL){
633
ret = argp_parse(&argp, custom_argc, custom_argv, ARGP_IN_ORDER,
634
0, NULL);
635
if(ret == ARGP_ERR_UNKNOWN){
636
fprintf(stderr, "Unknown error while parsing arguments\n");
637
exitstatus = EXIT_FAILURE;
727
ret = argp_parse(&argp, custom_argc, custom_argv,
728
ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
729
NULL, NULL);
730
switch(ret){
731
case 0:
732
break;
733
case ENOMEM:
734
default:
735
errno = ret;
736
error(0, errno, "argp_parse");
737
exitstatus = EX_OSERR;
738
goto fallback;
739
case EINVAL:
740
exitstatus = EX_CONFIG;
638
741
goto fallback;
639
742
}
640
743
}
641
744
642
745
/* Parse actual command line arguments, to let them override the
643
746
config file */
644
ret = argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
645
if(ret == ARGP_ERR_UNKNOWN){
646
fprintf(stderr, "Unknown error while parsing arguments\n");
647
exitstatus = EXIT_FAILURE;
747
ret = argp_parse(&argp, argc, argv,
748
ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
749
NULL, NULL);
750
switch(ret){
751
case 0:
752
break;
753
case ENOMEM:
754
default:
755
errno = ret;
756
error(0, errno, "argp_parse");
757
exitstatus = EX_OSERR;
758
goto fallback;
759
case EINVAL:
760
exitstatus = EX_USAGE;
648
761
goto fallback;
649
762
}
650
763
662
775
}
663
776
}
664
777
665
/* Strip permissions down to nobody */
666
setgid(gid);
778
if(getuid() == 0){
779
/* Work around Debian bug #633582:
780
<http://bugs.debian.org/633582> */
781
int plugindir_fd = open(/* plugindir or */ PDIR, O_RDONLY);
782
if(plugindir_fd == -1){
783
if(errno != ENOENT){
784
error(0, errno, "open(\"" PDIR "\")");
785
}
786
} else {
787
ret = (int)TEMP_FAILURE_RETRY(fstat(plugindir_fd, &st));
788
if(ret == -1){
789
error(0, errno, "fstat");
790
} else {
791
if(S_ISDIR(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
792
ret = fchown(plugindir_fd, uid, gid);
793
if(ret == -1){
794
error(0, errno, "fchown");
795
}
796
}
797
}
798
TEMP_FAILURE_RETRY(close(plugindir_fd));
799
}
800
}
801
802
/* Lower permissions */
803
ret = setgid(gid);
667
804
if(ret == -1){
668
perror("setgid");
805
error(0, errno, "setgid");
669
806
}
670
807
ret = setuid(uid);
671
808
if(ret == -1){
672
perror("setuid");
673
}
674
675
if(plugindir == NULL){
676
dir = opendir(PDIR);
677
} else {
678
dir = opendir(plugindir);
679
}
680
681
if(dir == NULL){
682
perror("Could not open plugin dir");
683
exitstatus = EXIT_FAILURE;
684
goto fallback;
685
}
686
687
/* Set the FD_CLOEXEC flag on the directory, if possible */
809
error(0, errno, "setuid");
810
}
811
812
/* Open plugin directory with close_on_exec flag */
688
813
{
689
int dir_fd = dirfd(dir);
690
if(dir_fd >= 0){
691
ret = set_cloexec_flag(dir_fd);
692
if(ret < 0){
693
perror("set_cloexec_flag");
694
exitstatus = EXIT_FAILURE;
695
goto fallback;
696
}
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
);
821
if(dir_fd == -1){
822
error(0, errno, "Could not open plugin dir");
823
exitstatus = EX_UNAVAILABLE;
824
goto fallback;
825
}
826
827
#ifndef O_CLOEXEC
828
/* Set the FD_CLOEXEC flag on the directory */
829
ret = set_cloexec_flag(dir_fd);
830
if(ret < 0){
831
error(0, errno, "set_cloexec_flag");
832
TEMP_FAILURE_RETRY(close(dir_fd));
833
exitstatus = EX_OSERR;
834
goto fallback;
835
}
836
#endif /* O_CLOEXEC */
837
838
dir = fdopendir(dir_fd);
839
if(dir == NULL){
840
error(0, errno, "Could not open plugin dir");
841
TEMP_FAILURE_RETRY(close(dir_fd));
842
exitstatus = EX_OSERR;
843
goto fallback;
697
844
}
698
845
}
699
846
701
848
702
849
/* Read and execute any executable in the plugin directory*/
703
850
while(true){
704
dirst = readdir(dir);
851
do {
852
dirst = readdir(dir);
853
} while(dirst == NULL and errno == EINTR);
705
854
706
855
/* All directory entries have been processed */
707
856
if(dirst == NULL){
708
857
if(errno == EBADF){
709
perror("readdir");
710
exitstatus = EXIT_FAILURE;
858
error(0, errno, "readdir");
859
exitstatus = EX_IOERR;
711
860
goto fallback;
712
861
}
713
862
break;
714
863
}
715
864
716
d_name_len = strlen(dirst->d_name);
717
718
865
/* Ignore dotfiles, backup files and other junk */
719
866
{
720
867
bool bad_name = false;
721
722
const char const *bad_prefixes[] = { ".", "#", NULL };
723
724
const char const *bad_suffixes[] = { "~", "#", ".dpkg-new",
725
".dpkg-old",
726
".dpkg-bak",
727
".dpkg-divert", NULL };
728
for(const char **pre = bad_prefixes; *pre != NULL; pre++){
729
size_t pre_len = strlen(*pre);
730
if((d_name_len >= pre_len)
731
and strncmp((dirst->d_name), *pre, pre_len) == 0){
732
if(debug){
733
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
734
" with bad prefix %s\n", dirst->d_name, *pre);
735
}
736
bad_name = true;
737
break;
738
}
739
}
740
if(bad_name){
741
continue;
742
}
743
for(const char **suf = bad_suffixes; *suf != NULL; suf++){
744
size_t suf_len = strlen(*suf);
745
if((d_name_len >= suf_len)
746
and (strcmp((dirst->d_name)+d_name_len-suf_len, *suf)
747
== 0)){
748
if(debug){
749
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
750
" with bad suffix %s\n", dirst->d_name, *suf);
751
}
752
bad_name = true;
753
break;
754
}
755
}
756
868
const char * const patterns[] = { ".*", "#*#", "*~",
869
"*.dpkg-new", "*.dpkg-old",
870
"*.dpkg-bak", "*.dpkg-divert",
871
NULL };
872
#ifdef __GNUC__
873
#pragma GCC diagnostic push
874
#pragma GCC diagnostic ignored "-Wcast-qual"
875
#endif
876
for(const char **pat = (const char **)patterns;
877
*pat != NULL; pat++){
878
#ifdef __GNUC__
879
#pragma GCC diagnostic pop
880
#endif
881
if(fnmatch(*pat, dirst->d_name,
882
FNM_FILE_NAME | FNM_PERIOD) != FNM_NOMATCH){
883
if(debug){
884
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
885
" matching pattern %s\n", dirst->d_name, *pat);
886
}
887
bad_name = true;
888
break;
889
}
890
}
757
891
if(bad_name){
758
892
continue;
759
893
}
760
894
}
761
895
762
char *filename;
763
if(plugindir == NULL){
764
ret = asprintf(&filename, PDIR "/%s", dirst->d_name);
765
} else {
766
ret = asprintf(&filename, "%s/%s", plugindir, dirst->d_name);
896
int plugin_fd = openat(dir_fd, dirst->d_name, O_RDONLY |
897
#ifdef O_CLOEXEC
898
O_CLOEXEC
899
#else /* not O_CLOEXEC */
900
0
901
#endif /* not O_CLOEXEC */
902
);
903
if(plugin_fd == -1){
904
error(0, errno, "Could not open plugin");
905
continue;
767
906
}
907
#ifndef O_CLOEXEC
908
/* Set the FD_CLOEXEC flag on the plugin FD */
909
ret = set_cloexec_flag(plugin_fd);
768
910
if(ret < 0){
769
perror("asprintf");
911
error(0, errno, "set_cloexec_flag");
912
TEMP_FAILURE_RETRY(close(plugin_fd));
770
913
continue;
771
914
}
772
773
ret = stat(filename, &st);
915
#endif /* O_CLOEXEC */
916
ret = (int)TEMP_FAILURE_RETRY(fstat(plugin_fd, &st));
774
917
if(ret == -1){
775
perror("stat");
776
free(filename);
918
error(0, errno, "stat");
919
TEMP_FAILURE_RETRY(close(plugin_fd));
777
920
continue;
778
921
}
779
922
780
923
/* Ignore non-executable files */
781
if(not S_ISREG(st.st_mode) or (access(filename, X_OK) != 0)){
924
if(not S_ISREG(st.st_mode)
925
or (TEMP_FAILURE_RETRY(faccessat(dir_fd, dirst->d_name, X_OK,
926
0)) != 0)){
782
927
if(debug){
783
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
784
" with bad type or mode\n", filename);
928
fprintf(stderr, "Ignoring plugin dir entry \"%s/%s\""
929
" with bad type or mode\n",
930
plugindir != NULL ? plugindir : PDIR, dirst->d_name);
785
931
}
786
free(filename);
932
TEMP_FAILURE_RETRY(close(plugin_fd));
787
933
continue;
788
934
}
789
935
790
936
plugin *p = getplugin(dirst->d_name);
791
937
if(p == NULL){
792
perror("getplugin");
793
free(filename);
938
error(0, errno, "getplugin");
939
TEMP_FAILURE_RETRY(close(plugin_fd));
794
940
continue;
795
941
}
796
942
if(p->disabled){
798
944
fprintf(stderr, "Ignoring disabled plugin \"%s\"\n",
799
945
dirst->d_name);
800
946
}
801
free(filename);
947
TEMP_FAILURE_RETRY(close(plugin_fd));
802
948
continue;
803
949
}
804
950
{
807
953
if(g != NULL){
808
954
for(char **a = g->argv + 1; *a != NULL; a++){
809
955
if(not add_argument(p, *a)){
810
perror("add_argument");
956
error(0, errno, "add_argument");
811
957
}
812
958
}
813
959
/* Add global environment variables */
814
960
for(char **e = g->environ; *e != NULL; e++){
815
961
if(not add_environment(p, *e, false)){
816
perror("add_environment");
962
error(0, errno, "add_environment");
817
963
}
818
964
}
819
965
}
820
966
}
821
/* If this plugin has any environment variables, we will call
822
using execve and need to duplicate the environment from this
823
process, too. */
967
/* If this plugin has any environment variables, we need to
968
duplicate the environment from this process, too. */
824
969
if(p->environ[0] != NULL){
825
970
for(char **e = environ; *e != NULL; e++){
826
971
if(not add_environment(p, *e, false)){
827
perror("add_environment");
972
error(0, errno, "add_environment");
828
973
}
829
974
}
830
975
}
831
976
832
977
int pipefd[2];
833
ret = pipe(pipefd);
978
ret = (int)TEMP_FAILURE_RETRY(pipe(pipefd));
834
979
if(ret == -1){
835
perror("pipe");
836
exitstatus = EXIT_FAILURE;
980
error(0, errno, "pipe");
981
exitstatus = EX_OSERR;
837
982
goto fallback;
838
983
}
839
984
/* Ask OS to automatic close the pipe on exec */
840
985
ret = set_cloexec_flag(pipefd[0]);
841
986
if(ret < 0){
842
perror("set_cloexec_flag");
843
exitstatus = EXIT_FAILURE;
987
error(0, errno, "set_cloexec_flag");
988
exitstatus = EX_OSERR;
844
989
goto fallback;
845
990
}
846
991
ret = set_cloexec_flag(pipefd[1]);
847
992
if(ret < 0){
848
perror("set_cloexec_flag");
849
exitstatus = EXIT_FAILURE;
993
error(0, errno, "set_cloexec_flag");
994
exitstatus = EX_OSERR;
850
995
goto fallback;
851
996
}
852
997
/* Block SIGCHLD until process is safely in process list */
853
ret = sigprocmask(SIG_BLOCK, &sigchld_action.sa_mask, NULL);
998
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_BLOCK,
999
&sigchld_action.sa_mask,
1000
NULL));
854
1001
if(ret < 0){
855
perror("sigprocmask");
856
exitstatus = EXIT_FAILURE;
1002
error(0, errno, "sigprocmask");
1003
exitstatus = EX_OSERR;
857
1004
goto fallback;
858
1005
}
859
1006
/* Starting a new process to be watched */
860
pid_t pid = fork();
1007
pid_t pid;
1008
do {
1009
pid = fork();
1010
} while(pid == -1 and errno == EINTR);
861
1011
if(pid == -1){
862
perror("fork");
863
exitstatus = EXIT_FAILURE;
1012
error(0, errno, "fork");
1013
exitstatus = EX_OSERR;
864
1014
goto fallback;
865
1015
}
866
1016
if(pid == 0){
867
1017
/* this is the child process */
868
1018
ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
869
1019
if(ret < 0){
870
perror("sigaction");
871
_exit(EXIT_FAILURE);
1020
error(0, errno, "sigaction");
1021
_exit(EX_OSERR);
872
1022
}
873
1023
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
874
1024
if(ret < 0){
875
perror("sigprocmask");
876
_exit(EXIT_FAILURE);
1025
error(0, errno, "sigprocmask");
1026
_exit(EX_OSERR);
877
1027
}
878
1028
879
1029
ret = dup2(pipefd[1], STDOUT_FILENO); /* replace our stdout */
880
1030
if(ret == -1){
881
perror("dup2");
882
_exit(EXIT_FAILURE);
1031
error(0, errno, "dup2");
1032
_exit(EX_OSERR);
883
1033
}
884
1034
885
1035
if(dirfd(dir) < 0){
887
1037
above and must now close it manually here. */
888
1038
closedir(dir);
889
1039
}
890
if(p->environ[0] == NULL){
891
if(execv(filename, p->argv) < 0){
892
perror("execv");
893
_exit(EXIT_FAILURE);
894
}
895
} else {
896
if(execve(filename, p->argv, p->environ) < 0){
897
perror("execve");
898
_exit(EXIT_FAILURE);
899
}
1040
if(fexecve(plugin_fd, p->argv,
1041
(p->environ[0] != NULL) ? p->environ : environ) < 0){
1042
error(0, errno, "fexecve for %s/%s",
1043
plugindir != NULL ? plugindir : PDIR, dirst->d_name);
1044
_exit(EX_OSERR);
900
1045
}
901
1046
/* no return */
902
1047
}
903
1048
/* Parent process */
904
close(pipefd[1]); /* Close unused write end of pipe */
905
free(filename);
1049
TEMP_FAILURE_RETRY(close(pipefd[1])); /* Close unused write end of
1050
pipe */
1051
TEMP_FAILURE_RETRY(close(plugin_fd));
906
1052
plugin *new_plugin = getplugin(dirst->d_name);
907
1053
if(new_plugin == NULL){
908
perror("getplugin");
909
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
1054
error(0, errno, "getplugin");
1055
ret = (int)(TEMP_FAILURE_RETRY
1056
(sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask,
1057
NULL)));
910
1058
if(ret < 0){
911
perror("sigprocmask");
1059
error(0, errno, "sigprocmask");
912
1060
}
913
exitstatus = EXIT_FAILURE;
1061
exitstatus = EX_OSERR;
914
1062
goto fallback;
915
1063
}
916
1064
919
1067
920
1068
/* Unblock SIGCHLD so signal handler can be run if this process
921
1069
has already completed */
922
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
1070
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1071
&sigchld_action.sa_mask,
1072
NULL));
923
1073
if(ret < 0){
924
perror("sigprocmask");
925
exitstatus = EXIT_FAILURE;
1074
error(0, errno, "sigprocmask");
1075
exitstatus = EX_OSERR;
926
1076
goto fallback;
927
1077
}
928
1078
929
FD_SET(new_plugin->fd, &rfds_all);
1079
#if defined (__GNUC__) and defined (__GLIBC__)
1080
#if not __GLIBC_PREREQ(2, 16)
1081
#pragma GCC diagnostic push
1082
#pragma GCC diagnostic ignored "-Wsign-conversion"
1083
#endif
1084
#endif
1085
FD_SET(new_plugin->fd, &rfds_all); /* Spurious warning from
1086
-Wconversion in GNU libc
1087
before 2.16 */
1088
#if defined (__GNUC__) and defined (__GLIBC__)
1089
#if not __GLIBC_PREREQ(2, 16)
1090
#pragma GCC diagnostic pop
1091
#endif
1092
#endif
930
1093
931
1094
if(maxfd < new_plugin->fd){
932
1095
maxfd = new_plugin->fd;
933
1096
}
934
1097
}
935
1098
936
closedir(dir);
1099
TEMP_FAILURE_RETRY(closedir(dir));
937
1100
dir = NULL;
938
1101
free_plugin(getplugin(NULL));
939
1102
952
1115
while(plugin_list){
953
1116
fd_set rfds = rfds_all;
954
1117
int select_ret = select(maxfd+1, &rfds, NULL, NULL, NULL);
955
if(select_ret == -1){
956
perror("select");
957
exitstatus = EXIT_FAILURE;
1118
if(select_ret == -1 and errno != EINTR){
1119
error(0, errno, "select");
1120
exitstatus = EX_OSERR;
958
1121
goto fallback;
959
1122
}
960
1123
/* OK, now either a process completed, or something can be read
986
1149
}
987
1150
988
1151
/* Remove the plugin */
989
FD_CLR(proc->fd, &rfds_all);
1152
#if defined (__GNUC__) and defined (__GLIBC__)
1153
#if not __GLIBC_PREREQ(2, 16)
1154
#pragma GCC diagnostic push
1155
#pragma GCC diagnostic ignored "-Wsign-conversion"
1156
#endif
1157
#endif
1158
FD_CLR(proc->fd, &rfds_all); /* Spurious warning from
1159
-Wconversion in GNU libc
1160
before 2.16 */
1161
#if defined (__GNUC__) and defined (__GLIBC__)
1162
#if not __GLIBC_PREREQ(2, 16)
1163
#pragma GCC diagnostic pop
1164
#endif
1165
#endif
990
1166
991
1167
/* Block signal while modifying process_list */
992
ret = sigprocmask(SIG_BLOCK, &sigchld_action.sa_mask, NULL);
1168
ret = (int)TEMP_FAILURE_RETRY(sigprocmask
1169
(SIG_BLOCK,
1170
&sigchld_action.sa_mask,
1171
NULL));
993
1172
if(ret < 0){
994
perror("sigprocmask");
995
exitstatus = EXIT_FAILURE;
1173
error(0, errno, "sigprocmask");
1174
exitstatus = EX_OSERR;
996
1175
goto fallback;
997
1176
}
998
1177
1001
1180
proc = next_plugin;
1002
1181
1003
1182
/* We are done modifying process list, so unblock signal */
1004
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask,
1005
NULL);
1183
ret = (int)(TEMP_FAILURE_RETRY
1184
(sigprocmask(SIG_UNBLOCK,
1185
&sigchld_action.sa_mask, NULL)));
1006
1186
if(ret < 0){
1007
perror("sigprocmask");
1008
exitstatus = EXIT_FAILURE;
1187
error(0, errno, "sigprocmask");
1188
exitstatus = EX_OSERR;
1009
1189
goto fallback;
1010
1190
}
1011
1191
1021
1201
bool bret = print_out_password(proc->buffer,
1022
1202
proc->buffer_length);
1023
1203
if(not bret){
1024
perror("print_out_password");
1025
exitstatus = EXIT_FAILURE;
1204
error(0, errno, "print_out_password");
1205
exitstatus = EX_IOERR;
1026
1206
}
1027
1207
goto fallback;
1028
1208
}
1029
1209
1030
1210
/* This process has not completed. Does it have any output? */
1031
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){
1211
#if defined (__GNUC__) and defined (__GLIBC__)
1212
#if not __GLIBC_PREREQ(2, 16)
1213
#pragma GCC diagnostic push
1214
#pragma GCC diagnostic ignored "-Wsign-conversion"
1215
#endif
1216
#endif
1217
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){ /* Spurious
1218
warning from
1219
-Wconversion
1220
in GNU libc
1221
before
1222
2.16 */
1223
#if defined (__GNUC__) and defined (__GLIBC__)
1224
#if not __GLIBC_PREREQ(2, 16)
1225
#pragma GCC diagnostic pop
1226
#endif
1227
#endif
1032
1228
/* This process had nothing to say at this time */
1033
1229
proc = proc->next;
1034
1230
continue;
1035
1231
}
1036
1232
/* Before reading, make the process' data buffer large enough */
1037
1233
if(proc->buffer_length + BUFFER_SIZE > proc->buffer_size){
1038
proc->buffer = realloc(proc->buffer, proc->buffer_size
1039
+ (size_t) BUFFER_SIZE);
1040
if(proc->buffer == NULL){
1041
perror("malloc");
1042
exitstatus = EXIT_FAILURE;
1234
char *new_buffer = realloc(proc->buffer, proc->buffer_size
1235
+ (size_t) BUFFER_SIZE);
1236
if(new_buffer == NULL){
1237
error(0, errno, "malloc");
1238
exitstatus = EX_OSERR;
1043
1239
goto fallback;
1044
1240
}
1241
proc->buffer = new_buffer;
1045
1242
proc->buffer_size += BUFFER_SIZE;
1046
1243
}
1047
1244
/* Read from the process */
1048
sret = read(proc->fd, proc->buffer + proc->buffer_length,
1049
BUFFER_SIZE);
1245
sret = TEMP_FAILURE_RETRY(read(proc->fd,
1246
proc->buffer
1247
+ proc->buffer_length,
1248
BUFFER_SIZE));
1050
1249
if(sret < 0){
1051
1250
/* Read error from this process; ignore the error */
1052
1251
proc = proc->next;
1064
1263
1065
1264
fallback:
1066
1265
1067
if(plugin_list == NULL or exitstatus != EXIT_SUCCESS){
1266
if(plugin_list == NULL or (exitstatus != EXIT_SUCCESS
1267
and exitstatus != EX_OK)){
1068
1268
/* Fallback if all plugins failed, none are found or an error
1069
1269
occured */
1070
1270
bool bret;
1078
1278
}
1079
1279
bret = print_out_password(passwordbuffer, len);
1080
1280
if(not bret){
1081
perror("print_out_password");
1082
exitstatus = EXIT_FAILURE;
1281
error(0, errno, "print_out_password");
1282
exitstatus = EX_IOERR;
1083
1283
}
1084
1284
}
1085
1285
1086
1286
/* Restore old signal handler */
1087
1287
ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
1088
1288
if(ret == -1){
1089
perror("sigaction");
1090
exitstatus = EXIT_FAILURE;
1289
error(0, errno, "sigaction");
1290
exitstatus = EX_OSERR;
1091
1291
}
1092
1292
1093
1293
if(custom_argv != NULL){
1108
1308
ret = kill(p->pid, SIGTERM);
1109
1309
if(ret == -1 and errno != ESRCH){
1110
1310
/* Set-uid proccesses might not get closed */
1111
perror("kill");
1311
error(0, errno, "kill");
1112
1312
}
1113
1313
}
1114
1314
}
1115
1315
1116
1316
/* Wait for any remaining child processes to terminate */
1117
do{
1317
do {
1118
1318
ret = wait(NULL);
1119
1319
} while(ret >= 0);
1120
1320
if(errno != ECHILD){
1121
perror("wait");
1321
error(0, errno, "wait");
1122
1322
}
1123
1323
1124
1324
free_plugin_list();
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0