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 24.1.131
- compare with another revision
- download diff
- download tarball
- view history from revision 24.1.131
- Committer: Björn Påhlsson
- Date: 2009-02-06 01:15:52 UTC
- mfrom: (299 mandos)
- mto: (24.1.154 mandos) (237.4.3 mandos-release)
- mto: This revision was merged to the branch mainline in revision 306.
- Revision ID: belorn@braxen-20090206011552-p07z71hj60jm7ncl
merge
- files removed:
- DBUS-API
- debian/source
- network-hooks.d
- files modified:
- .bzrignore
added
removed
plugin-runner.c
1
/* -*- coding: utf-8; mode: c; mode: orgtbl -*- */
1
/* -*- coding: utf-8 -*- */
2
2
/*
3
3
* Mandos plugin runner - Run Mandos plugins
4
4
*
5
* Copyright © 2008-2013 Teddy Hogeborn
6
* Copyright © 2008-2013 Björn Påhlsson
5
* Copyright © 2008,2009 Teddy Hogeborn
6
* Copyright © 2008,2009 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@recompile.se>.
22
* Contact the authors at <mandos@fukt.bsnet.se>.
23
23
*/
24
24
25
25
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), getline(),
26
asprintf(), O_CLOEXEC */
26
asprintf() */
27
27
#include <stddef.h> /* size_t, NULL */
28
#include <stdlib.h> /* malloc(), exit(), EXIT_SUCCESS,
29
realloc() */
28
#include <stdlib.h> /* malloc(), exit(), EXIT_FAILURE,
29
EXIT_SUCCESS, realloc() */
30
30
#include <stdbool.h> /* bool, true, false */
31
#include <stdio.h> /* fileno(), fprintf(),
31
#include <stdio.h> /* perror, fileno(), fprintf(),
32
32
stderr, STDOUT_FILENO */
33
#include <sys/types.h> /* DIR, fdopendir(), stat(), struct
33
#include <sys/types.h> /* DIR, opendir(), stat(), struct
34
34
stat, waitpid(), WIFEXITED(),
35
35
WEXITSTATUS(), wait(), pid_t,
36
36
uid_t, gid_t, getuid(), getgid(),
38
38
#include <sys/select.h> /* fd_set, select(), FD_ZERO(),
39
39
FD_SET(), FD_ISSET(), FD_CLR */
40
40
#include <sys/wait.h> /* wait(), waitpid(), WIFEXITED(),
41
WEXITSTATUS(), WTERMSIG(),
42
WCOREDUMP() */
41
WEXITSTATUS() */
43
42
#include <sys/stat.h> /* struct stat, stat(), S_ISREG() */
44
43
#include <iso646.h> /* and, or, not */
45
#include <dirent.h> /* DIR, struct dirent, fdopendir(),
44
#include <dirent.h> /* DIR, struct dirent, opendir(),
46
45
readdir(), closedir(), dirfd() */
47
46
#include <unistd.h> /* struct stat, stat(), S_ISREG(),
48
47
fcntl(), setuid(), setgid(),
53
52
close() */
54
53
#include <fcntl.h> /* fcntl(), F_GETFD, F_SETFD,
55
54
FD_CLOEXEC */
56
#include <string.h> /* strsep, strlen(), asprintf(),
57
strsignal(), strcmp(), strncmp() */
55
#include <string.h> /* strsep, strlen(), asprintf() */
58
56
#include <errno.h> /* errno */
59
57
#include <argp.h> /* struct argp_option, struct
60
58
argp_state, struct argp,
64
62
#include <signal.h> /* struct sigaction, sigemptyset(),
65
63
sigaddset(), sigaction(),
66
64
sigprocmask(), SIG_BLOCK, SIGCHLD,
67
SIG_UNBLOCK, kill(), sig_atomic_t
68
*/
65
SIG_UNBLOCK, kill() */
69
66
#include <errno.h> /* errno, EBADF */
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() */
67
#include <inttypes.h> /* intmax_t, SCNdMAX, PRIdMAX, */
75
68
76
69
#define BUFFER_SIZE 256
77
70
79
72
#define AFILE "/conf/conf.d/mandos/plugin-runner.conf"
80
73
81
74
const char *argp_program_version = "plugin-runner " VERSION;
82
const char *argp_program_bug_address = "<mandos@recompile.se>";
75
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
83
76
84
77
typedef struct plugin{
85
78
char *name; /* can be NULL or any plugin name */
88
81
char **environ;
89
82
int envc;
90
83
bool disabled;
91
84
92
85
/* Variables used for running processes*/
93
86
pid_t pid;
94
87
int fd;
106
99
/* Gets an existing plugin based on name,
107
100
or if none is found, creates a new one */
108
101
static plugin *getplugin(char *name){
109
/* Check for existing plugin with that name */
102
/* Check for exiting plugin with that name */
110
103
for(plugin *p = plugin_list; p != NULL; p = p->next){
111
104
if((p->name == name)
112
105
or (p->name and name and (strcmp(p->name, name) == 0))){
114
107
}
115
108
}
116
109
/* Create a new plugin */
117
plugin *new_plugin = NULL;
118
do {
119
new_plugin = malloc(sizeof(plugin));
120
} while(new_plugin == NULL and errno == EINTR);
110
plugin *new_plugin = malloc(sizeof(plugin));
121
111
if(new_plugin == NULL){
122
112
return NULL;
123
113
}
124
114
char *copy_name = NULL;
125
115
if(name != NULL){
126
do {
127
copy_name = strdup(name);
128
} while(copy_name == NULL and errno == EINTR);
116
copy_name = strdup(name);
129
117
if(copy_name == NULL){
130
int e = errno;
131
118
free(new_plugin);
132
errno = e;
133
119
return NULL;
134
120
}
135
121
}
139
125
.disabled = false,
140
126
.next = plugin_list };
141
127
142
do {
143
new_plugin->argv = malloc(sizeof(char *) * 2);
144
} while(new_plugin->argv == NULL and errno == EINTR);
128
new_plugin->argv = malloc(sizeof(char *) * 2);
145
129
if(new_plugin->argv == NULL){
146
int e = errno;
147
130
free(copy_name);
148
131
free(new_plugin);
149
errno = e;
150
132
return NULL;
151
133
}
152
134
new_plugin->argv[0] = copy_name;
153
135
new_plugin->argv[1] = NULL;
154
136
155
do {
156
new_plugin->environ = malloc(sizeof(char *));
157
} while(new_plugin->environ == NULL and errno == EINTR);
137
new_plugin->environ = malloc(sizeof(char *));
158
138
if(new_plugin->environ == NULL){
159
int e = errno;
160
139
free(copy_name);
161
140
free(new_plugin->argv);
162
141
free(new_plugin);
163
errno = e;
164
142
return NULL;
165
143
}
166
144
new_plugin->environ[0] = NULL;
171
149
}
172
150
173
151
/* Helper function for add_argument and add_environment */
174
__attribute__((nonnull))
175
152
static bool add_to_char_array(const char *new, char ***array,
176
153
int *len){
177
154
/* Resize the pointed-to array to hold one more pointer */
178
char **new_array = NULL;
179
do {
180
new_array = realloc(*array, sizeof(char *)
181
* (size_t) ((*len) + 2));
182
} while(new_array == NULL and errno == EINTR);
155
*array = realloc(*array, sizeof(char *)
156
* (size_t) ((*len) + 2));
183
157
/* Malloc check */
184
if(new_array == NULL){
158
if(*array == NULL){
185
159
return false;
186
160
}
187
*array = new_array;
188
161
/* Make a copy of the new string */
189
char *copy;
190
do {
191
copy = strdup(new);
192
} while(copy == NULL and errno == EINTR);
162
char *copy = strdup(new);
193
163
if(copy == NULL){
194
164
return false;
195
165
}
202
172
}
203
173
204
174
/* Add to a plugin's argument vector */
205
__attribute__((nonnull(2)))
206
175
static bool add_argument(plugin *p, const char *arg){
207
176
if(p == NULL){
208
177
return false;
211
180
}
212
181
213
182
/* Add to a plugin's environment */
214
__attribute__((nonnull(2)))
215
183
static bool add_environment(plugin *p, const char *def, bool replace){
216
184
if(p == NULL){
217
185
return false;
219
187
/* namelen = length of name of environment variable */
220
188
size_t namelen = (size_t)(strchrnul(def, '=') - def);
221
189
/* Search for this environment variable */
222
for(char **envdef = p->environ; *envdef != NULL; envdef++){
223
if(strncmp(*envdef, def, namelen + 1) == 0){
190
for(char **e = p->environ; *e != NULL; e++){
191
if(strncmp(*e, def, namelen + 1) == 0){
224
192
/* It already exists */
225
193
if(replace){
226
char *new_envdef;
227
do {
228
new_envdef = realloc(*envdef, strlen(def) + 1);
229
} while(new_envdef == NULL and errno == EINTR);
230
if(new_envdef == NULL){
194
char *new = realloc(*e, strlen(def) + 1);
195
if(new == NULL){
231
196
return false;
232
197
}
233
*envdef = new_envdef;
234
strcpy(*envdef, def);
198
*e = new;
199
strcpy(*e, def);
235
200
}
236
201
return true;
237
202
}
242
207
/*
243
208
* Based on the example in the GNU LibC manual chapter 13.13 "File
244
209
* Descriptor Flags".
245
| [[info:libc:Descriptor%20Flags][File Descriptor Flags]] |
210
* *Note File Descriptor Flags:(libc)Descriptor Flags.
246
211
*/
247
212
static int set_cloexec_flag(int fd){
248
int ret = (int)TEMP_FAILURE_RETRY(fcntl(fd, F_GETFD, 0));
213
int ret = fcntl(fd, F_GETFD, 0);
249
214
/* If reading the flags failed, return error indication now. */
250
215
if(ret < 0){
251
216
return ret;
252
217
}
253
218
/* Store modified flag word in the descriptor. */
254
return (int)TEMP_FAILURE_RETRY(fcntl(fd, F_SETFD,
255
ret | FD_CLOEXEC));
219
return fcntl(fd, F_SETFD, ret | FD_CLOEXEC);
256
220
}
257
221
258
222
273
237
/* No child processes */
274
238
break;
275
239
}
276
error(0, errno, "waitpid");
240
perror("waitpid");
277
241
}
278
242
279
243
/* A child exited, find it in process_list */
291
255
}
292
256
293
257
/* Prints out a password to stdout */
294
__attribute__((nonnull))
295
258
static bool print_out_password(const char *buffer, size_t length){
296
259
ssize_t ret;
297
260
for(size_t written = 0; written < length; written += (size_t)ret){
305
268
}
306
269
307
270
/* Removes and free a plugin from the plugin list */
308
__attribute__((nonnull))
309
271
static void free_plugin(plugin *plugin_node){
310
272
311
273
for(char **arg = plugin_node->argv; *arg != NULL; arg++){
317
279
}
318
280
free(plugin_node->environ);
319
281
free(plugin_node->buffer);
320
282
321
283
/* Removes the plugin from the singly-linked list */
322
284
if(plugin_node == plugin_list){
323
285
/* First one - simple */
350
312
struct dirent *dirst;
351
313
struct stat st;
352
314
fd_set rfds_all;
353
int ret, maxfd = 0;
315
int ret, numchars, maxfd = 0;
354
316
ssize_t sret;
317
intmax_t tmpmax;
355
318
uid_t uid = 65534;
356
319
gid_t gid = 65534;
357
320
bool debug = false;
366
329
sigemptyset(&sigchld_action.sa_mask);
367
330
ret = sigaddset(&sigchld_action.sa_mask, SIGCHLD);
368
331
if(ret == -1){
369
error(0, errno, "sigaddset");
370
exitstatus = EX_OSERR;
332
perror("sigaddset");
333
exitstatus = EXIT_FAILURE;
371
334
goto fallback;
372
335
}
373
336
ret = sigaction(SIGCHLD, &sigchld_action, &old_sigchld_action);
374
337
if(ret == -1){
375
error(0, errno, "sigaction");
376
exitstatus = EX_OSERR;
338
perror("sigaction");
339
exitstatus = EXIT_FAILURE;
377
340
goto fallback;
378
341
}
379
342
411
374
.doc = "Group ID the plugins will run as", .group = 3 },
412
375
{ .name = "debug", .key = 132,
413
376
.doc = "Debug mode", .group = 4 },
414
/*
415
* These reproduce what we would get without ARGP_NO_HELP
416
*/
417
{ .name = "help", .key = '?',
418
.doc = "Give this help list", .group = -1 },
419
{ .name = "usage", .key = -3,
420
.doc = "Give a short usage message", .group = -1 },
421
{ .name = "version", .key = 'V',
422
.doc = "Print program version", .group = -1 },
423
377
{ .name = NULL }
424
378
};
425
379
426
__attribute__((nonnull(3)))
427
error_t parse_opt(int key, char *arg, struct argp_state *state){
428
errno = 0;
380
error_t parse_opt(int key, char *arg, __attribute__((unused))
381
struct argp_state *state){
429
382
switch(key){
430
char *tmp;
431
intmax_t tmp_id;
432
383
case 'g': /* --global-options */
433
{
434
char *plugin_option;
435
while((plugin_option = strsep(&arg, ",")) != NULL){
436
if(not add_argument(getplugin(NULL), plugin_option)){
437
break;
384
if(arg != NULL){
385
char *p;
386
while((p = strsep(&arg, ",")) != NULL){
387
if(p[0] == '\0'){
388
continue;
389
}
390
if(not add_argument(getplugin(NULL), p)){
391
perror("add_argument");
392
return ARGP_ERR_UNKNOWN;
438
393
}
439
394
}
440
395
}
441
396
break;
442
397
case 'G': /* --global-env */
443
add_environment(getplugin(NULL), arg, true);
398
if(arg == NULL){
399
break;
400
}
401
if(not add_environment(getplugin(NULL), arg, true)){
402
perror("add_environment");
403
}
444
404
break;
445
405
case 'o': /* --options-for */
446
{
447
char *option_list = strchr(arg, ':');
448
if(option_list == NULL){
449
argp_error(state, "No colon in \"%s\"", arg);
450
errno = EINVAL;
451
break;
452
}
453
*option_list = '\0';
454
option_list++;
455
if(arg[0] == '\0'){
456
argp_error(state, "Empty plugin name");
457
errno = EINVAL;
458
break;
459
}
460
char *option;
461
while((option = strsep(&option_list, ",")) != NULL){
462
if(not add_argument(getplugin(arg), option)){
463
break;
406
if(arg != NULL){
407
char *p_name = strsep(&arg, ":");
408
if(p_name[0] == '\0' or arg == NULL){
409
break;
410
}
411
char *opt = strsep(&arg, ":");
412
if(opt[0] == '\0' or opt == NULL){
413
break;
414
}
415
char *p;
416
while((p = strsep(&opt, ",")) != NULL){
417
if(p[0] == '\0'){
418
continue;
419
}
420
if(not add_argument(getplugin(p_name), p)){
421
perror("add_argument");
422
return ARGP_ERR_UNKNOWN;
464
423
}
465
424
}
466
425
}
467
426
break;
468
427
case 'E': /* --env-for */
428
if(arg == NULL){
429
break;
430
}
469
431
{
470
432
char *envdef = strchr(arg, ':');
471
433
if(envdef == NULL){
472
argp_error(state, "No colon in \"%s\"", arg);
473
errno = EINVAL;
474
434
break;
475
435
}
476
436
*envdef = '\0';
477
envdef++;
478
if(arg[0] == '\0'){
479
argp_error(state, "Empty plugin name");
480
errno = EINVAL;
481
break;
437
if(not add_environment(getplugin(arg), envdef+1, true)){
438
perror("add_environment");
482
439
}
483
add_environment(getplugin(arg), envdef, true);
484
440
}
485
441
break;
486
442
case 'd': /* --disable */
487
{
443
if(arg != NULL){
488
444
plugin *p = getplugin(arg);
489
if(p != NULL){
490
p->disabled = true;
445
if(p == NULL){
446
return ARGP_ERR_UNKNOWN;
491
447
}
448
p->disabled = true;
492
449
}
493
450
break;
494
451
case 'e': /* --enable */
495
{
452
if(arg != NULL){
496
453
plugin *p = getplugin(arg);
497
if(p != NULL){
498
p->disabled = false;
454
if(p == NULL){
455
return ARGP_ERR_UNKNOWN;
499
456
}
457
p->disabled = false;
500
458
}
501
459
break;
502
460
case 128: /* --plugin-dir */
503
461
free(plugindir);
504
462
plugindir = strdup(arg);
463
if(plugindir == NULL){
464
perror("strdup");
465
}
505
466
break;
506
467
case 129: /* --config-file */
507
468
/* This is already done by parse_opt_config_file() */
508
469
break;
509
470
case 130: /* --userid */
510
tmp_id = strtoimax(arg, &tmp, 10);
511
if(errno != 0 or tmp == arg or *tmp != '\0'
512
or tmp_id != (uid_t)tmp_id){
513
argp_error(state, "Bad user ID number: \"%s\", using %"
514
PRIdMAX, arg, (intmax_t)uid);
515
break;
471
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
472
if(ret < 1 or tmpmax != (uid_t)tmpmax
473
or arg[numchars] != '\0'){
474
fprintf(stderr, "Bad user ID number: \"%s\", using %"
475
PRIdMAX "\n", arg, (intmax_t)uid);
476
} else {
477
uid = (uid_t)tmpmax;
516
478
}
517
uid = (uid_t)tmp_id;
518
479
break;
519
480
case 131: /* --groupid */
520
tmp_id = strtoimax(arg, &tmp, 10);
521
if(errno != 0 or tmp == arg or *tmp != '\0'
522
or tmp_id != (gid_t)tmp_id){
523
argp_error(state, "Bad group ID number: \"%s\", using %"
524
PRIdMAX, arg, (intmax_t)gid);
525
break;
481
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
482
if(ret < 1 or tmpmax != (gid_t)tmpmax
483
or arg[numchars] != '\0'){
484
fprintf(stderr, "Bad group ID number: \"%s\", using %"
485
PRIdMAX "\n", arg, (intmax_t)gid);
486
} else {
487
gid = (gid_t)tmpmax;
526
488
}
527
gid = (gid_t)tmp_id;
528
489
break;
529
490
case 132: /* --debug */
530
491
debug = true;
531
492
break;
532
/*
533
* These reproduce what we would get without ARGP_NO_HELP
534
*/
535
case '?': /* --help */
536
state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
537
argp_state_help(state, state->out_stream, ARGP_HELP_STD_HELP);
538
case -3: /* --usage */
539
state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
540
argp_state_help(state, state->out_stream,
541
ARGP_HELP_USAGE | ARGP_HELP_EXIT_OK);
542
case 'V': /* --version */
543
fprintf(state->out_stream, "%s\n", argp_program_version);
544
exit(EXIT_SUCCESS);
545
break;
546
493
/*
547
494
* When adding more options before this line, remember to also add a
548
495
* "case" to the "parse_opt_config_file" function below.
551
498
/* Cryptsetup always passes an argument, which is an empty
552
499
string if "none" was specified in /etc/crypttab. So if
553
500
argument was empty, we ignore it silently. */
554
if(arg[0] == '\0'){
555
break;
501
if(arg[0] != '\0'){
502
fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
556
503
}
504
break;
505
case ARGP_KEY_END:
506
break;
557
507
default:
558
508
return ARGP_ERR_UNKNOWN;
559
509
}
560
return errno; /* Set to 0 at start */
510
return 0;
561
511
}
562
512
563
513
/* This option parser is the same as parse_opt() above, except it
565
515
error_t parse_opt_config_file(int key, char *arg,
566
516
__attribute__((unused))
567
517
struct argp_state *state){
568
errno = 0;
569
518
switch(key){
570
519
case 'g': /* --global-options */
571
520
case 'G': /* --global-env */
578
527
case 129: /* --config-file */
579
528
free(argfile);
580
529
argfile = strdup(arg);
581
break;
530
if(argfile == NULL){
531
perror("strdup");
532
}
533
break;
582
534
case 130: /* --userid */
583
535
case 131: /* --groupid */
584
536
case 132: /* --debug */
585
case '?': /* --help */
586
case -3: /* --usage */
587
case 'V': /* --version */
588
537
case ARGP_KEY_ARG:
538
case ARGP_KEY_END:
589
539
break;
590
540
default:
591
541
return ARGP_ERR_UNKNOWN;
592
542
}
593
return errno;
543
return 0;
594
544
}
595
545
596
546
struct argp argp = { .options = options,
600
550
601
551
/* Parse using parse_opt_config_file() in order to get the custom
602
552
config file location, if any. */
603
ret = argp_parse(&argp, argc, argv,
604
ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
605
NULL, NULL);
606
switch(ret){
607
case 0:
608
break;
609
case ENOMEM:
610
default:
611
errno = ret;
612
error(0, errno, "argp_parse");
613
exitstatus = EX_OSERR;
614
goto fallback;
615
case EINVAL:
616
exitstatus = EX_USAGE;
553
ret = argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
554
if(ret == ARGP_ERR_UNKNOWN){
555
fprintf(stderr, "Unknown error while parsing arguments\n");
556
exitstatus = EXIT_FAILURE;
617
557
goto fallback;
618
558
}
619
559
625
565
conffp = fopen(AFILE, "r");
626
566
} else {
627
567
conffp = fopen(argfile, "r");
628
}
568
}
629
569
if(conffp != NULL){
630
570
char *org_line = NULL;
631
571
char *p, *arg, *new_arg, *line;
632
572
size_t size = 0;
633
573
const char whitespace_delims[] = " \r\t\f\v\n";
634
574
const char comment_delim[] = "#";
635
575
636
576
custom_argc = 1;
637
577
custom_argv = malloc(sizeof(char*) * 2);
638
578
if(custom_argv == NULL){
639
error(0, errno, "malloc");
640
exitstatus = EX_OSERR;
579
perror("malloc");
580
exitstatus = EXIT_FAILURE;
641
581
goto fallback;
642
582
}
643
583
custom_argv[0] = argv[0];
644
584
custom_argv[1] = NULL;
645
585
646
586
/* for each line in the config file, strip whitespace and ignore
647
587
commented text */
648
588
while(true){
650
590
if(sret == -1){
651
591
break;
652
592
}
653
593
654
594
line = org_line;
655
595
arg = strsep(&line, comment_delim);
656
596
while((p = strsep(&arg, whitespace_delims)) != NULL){
659
599
}
660
600
new_arg = strdup(p);
661
601
if(new_arg == NULL){
662
error(0, errno, "strdup");
663
exitstatus = EX_OSERR;
602
perror("strdup");
603
exitstatus = EXIT_FAILURE;
664
604
free(org_line);
665
605
goto fallback;
666
606
}
667
607
668
608
custom_argc += 1;
669
{
670
char **new_argv = realloc(custom_argv, sizeof(char *)
671
* ((unsigned int)
672
custom_argc + 1));
673
if(new_argv == NULL){
674
error(0, errno, "realloc");
675
exitstatus = EX_OSERR;
676
free(new_arg);
677
free(org_line);
678
goto fallback;
679
} else {
680
custom_argv = new_argv;
681
}
609
custom_argv = realloc(custom_argv, sizeof(char *)
610
* ((unsigned int) custom_argc + 1));
611
if(custom_argv == NULL){
612
perror("realloc");
613
exitstatus = EXIT_FAILURE;
614
free(org_line);
615
goto fallback;
682
616
}
683
617
custom_argv[custom_argc-1] = new_arg;
684
custom_argv[custom_argc] = NULL;
618
custom_argv[custom_argc] = NULL;
685
619
}
686
620
}
687
do {
688
ret = fclose(conffp);
689
} while(ret == EOF and errno == EINTR);
690
if(ret == EOF){
691
error(0, errno, "fclose");
692
exitstatus = EX_IOERR;
693
goto fallback;
694
}
695
621
free(org_line);
696
622
} else {
697
623
/* Check for harmful errors and go to fallback. Other errors might
698
624
not affect opening plugins */
699
625
if(errno == EMFILE or errno == ENFILE or errno == ENOMEM){
700
error(0, errno, "fopen");
701
exitstatus = EX_OSERR;
626
perror("fopen");
627
exitstatus = EXIT_FAILURE;
702
628
goto fallback;
703
629
}
704
630
}
705
/* If there were any arguments from the configuration file, pass
706
them to parser as command line arguments */
631
/* If there was any arguments from configuration file,
632
pass them to parser as command arguments */
707
633
if(custom_argv != NULL){
708
ret = argp_parse(&argp, custom_argc, custom_argv,
709
ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
710
NULL, NULL);
711
switch(ret){
712
case 0:
713
break;
714
case ENOMEM:
715
default:
716
errno = ret;
717
error(0, errno, "argp_parse");
718
exitstatus = EX_OSERR;
719
goto fallback;
720
case EINVAL:
721
exitstatus = EX_CONFIG;
634
ret = argp_parse(&argp, custom_argc, custom_argv, ARGP_IN_ORDER,
635
0, NULL);
636
if(ret == ARGP_ERR_UNKNOWN){
637
fprintf(stderr, "Unknown error while parsing arguments\n");
638
exitstatus = EXIT_FAILURE;
722
639
goto fallback;
723
640
}
724
641
}
725
642
726
643
/* Parse actual command line arguments, to let them override the
727
644
config file */
728
ret = argp_parse(&argp, argc, argv,
729
ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
730
NULL, NULL);
731
switch(ret){
732
case 0:
733
break;
734
case ENOMEM:
735
default:
736
errno = ret;
737
error(0, errno, "argp_parse");
738
exitstatus = EX_OSERR;
739
goto fallback;
740
case EINVAL:
741
exitstatus = EX_USAGE;
645
ret = argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
646
if(ret == ARGP_ERR_UNKNOWN){
647
fprintf(stderr, "Unknown error while parsing arguments\n");
648
exitstatus = EXIT_FAILURE;
742
649
goto fallback;
743
650
}
744
651
756
663
}
757
664
}
758
665
759
if(getuid() == 0){
760
/* Work around Debian bug #633582:
761
<http://bugs.debian.org/633582> */
762
int plugindir_fd = open(/* plugindir or */ PDIR, O_RDONLY);
763
if(plugindir_fd == -1){
764
error(0, errno, "open");
765
} else {
766
ret = (int)TEMP_FAILURE_RETRY(fstat(plugindir_fd, &st));
767
if(ret == -1){
768
error(0, errno, "fstat");
769
} else {
770
if(S_ISDIR(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
771
ret = fchown(plugindir_fd, uid, gid);
772
if(ret == -1){
773
error(0, errno, "fchown");
774
}
775
}
776
}
777
TEMP_FAILURE_RETRY(close(plugindir_fd));
778
}
779
}
780
781
/* Lower permissions */
782
ret = setgid(gid);
666
/* Strip permissions down to nobody */
667
setgid(gid);
783
668
if(ret == -1){
784
error(0, errno, "setgid");
669
perror("setgid");
785
670
}
786
671
ret = setuid(uid);
787
672
if(ret == -1){
788
error(0, errno, "setuid");
789
}
790
791
/* Open plugin directory with close_on_exec flag */
673
perror("setuid");
674
}
675
676
if(plugindir == NULL){
677
dir = opendir(PDIR);
678
} else {
679
dir = opendir(plugindir);
680
}
681
682
if(dir == NULL){
683
perror("Could not open plugin dir");
684
exitstatus = EXIT_FAILURE;
685
goto fallback;
686
}
687
688
/* Set the FD_CLOEXEC flag on the directory, if possible */
792
689
{
793
int dir_fd = -1;
794
if(plugindir == NULL){
795
dir_fd = open(PDIR, O_RDONLY |
796
#ifdef O_CLOEXEC
797
O_CLOEXEC
798
#else /* not O_CLOEXEC */
799
0
800
#endif /* not O_CLOEXEC */
801
);
802
} else {
803
dir_fd = open(plugindir, O_RDONLY |
804
#ifdef O_CLOEXEC
805
O_CLOEXEC
806
#else /* not O_CLOEXEC */
807
0
808
#endif /* not O_CLOEXEC */
809
);
810
}
811
if(dir_fd == -1){
812
error(0, errno, "Could not open plugin dir");
813
exitstatus = EX_UNAVAILABLE;
814
goto fallback;
815
}
816
817
#ifndef O_CLOEXEC
818
/* Set the FD_CLOEXEC flag on the directory */
819
ret = set_cloexec_flag(dir_fd);
820
if(ret < 0){
821
error(0, errno, "set_cloexec_flag");
822
TEMP_FAILURE_RETRY(close(dir_fd));
823
exitstatus = EX_OSERR;
824
goto fallback;
825
}
826
#endif /* O_CLOEXEC */
827
828
dir = fdopendir(dir_fd);
829
if(dir == NULL){
830
error(0, errno, "Could not open plugin dir");
831
TEMP_FAILURE_RETRY(close(dir_fd));
832
exitstatus = EX_OSERR;
833
goto fallback;
690
int dir_fd = dirfd(dir);
691
if(dir_fd >= 0){
692
ret = set_cloexec_flag(dir_fd);
693
if(ret < 0){
694
perror("set_cloexec_flag");
695
exitstatus = EXIT_FAILURE;
696
goto fallback;
697
}
834
698
}
835
699
}
836
700
838
702
839
703
/* Read and execute any executable in the plugin directory*/
840
704
while(true){
841
do {
842
dirst = readdir(dir);
843
} while(dirst == NULL and errno == EINTR);
705
dirst = readdir(dir);
844
706
845
707
/* All directory entries have been processed */
846
708
if(dirst == NULL){
847
709
if(errno == EBADF){
848
error(0, errno, "readdir");
849
exitstatus = EX_IOERR;
710
perror("readdir");
711
exitstatus = EXIT_FAILURE;
850
712
goto fallback;
851
713
}
852
714
break;
858
720
{
859
721
bool bad_name = false;
860
722
861
const char * const bad_prefixes[] = { ".", "#", NULL };
723
const char const *bad_prefixes[] = { ".", "#", NULL };
862
724
863
const char * const bad_suffixes[] = { "~", "#", ".dpkg-new",
725
const char const *bad_suffixes[] = { "~", "#", ".dpkg-new",
864
726
".dpkg-old",
865
727
".dpkg-bak",
866
728
".dpkg-divert", NULL };
867
#ifdef __GNUC__
868
#pragma GCC diagnostic push
869
#pragma GCC diagnostic ignored "-Wcast-qual"
870
#endif
871
for(const char **pre = (const char **)bad_prefixes;
872
*pre != NULL; pre++){
873
#ifdef __GNUC__
874
#pragma GCC diagnostic pop
875
#endif
729
for(const char **pre = bad_prefixes; *pre != NULL; pre++){
876
730
size_t pre_len = strlen(*pre);
877
731
if((d_name_len >= pre_len)
878
732
and strncmp((dirst->d_name), *pre, pre_len) == 0){
887
741
if(bad_name){
888
742
continue;
889
743
}
890
#ifdef __GNUC__
891
#pragma GCC diagnostic push
892
#pragma GCC diagnostic ignored "-Wcast-qual"
893
#endif
894
for(const char **suf = (const char **)bad_suffixes;
895
*suf != NULL; suf++){
896
#ifdef __GNUC__
897
#pragma GCC diagnostic pop
898
#endif
744
for(const char **suf = bad_suffixes; *suf != NULL; suf++){
899
745
size_t suf_len = strlen(*suf);
900
746
if((d_name_len >= suf_len)
901
and (strcmp((dirst->d_name) + d_name_len-suf_len, *suf)
747
and (strcmp((dirst->d_name)+d_name_len-suf_len, *suf)
902
748
== 0)){
903
749
if(debug){
904
750
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
913
759
continue;
914
760
}
915
761
}
916
762
917
763
char *filename;
918
764
if(plugindir == NULL){
919
ret = (int)TEMP_FAILURE_RETRY(asprintf(&filename, PDIR "/%s",
920
dirst->d_name));
765
ret = asprintf(&filename, PDIR "/%s", dirst->d_name);
921
766
} else {
922
ret = (int)TEMP_FAILURE_RETRY(asprintf(&filename, "%s/%s",
923
plugindir,
924
dirst->d_name));
767
ret = asprintf(&filename, "%s/%s", plugindir, dirst->d_name);
925
768
}
926
769
if(ret < 0){
927
error(0, errno, "asprintf");
770
perror("asprintf");
928
771
continue;
929
772
}
930
773
931
ret = (int)TEMP_FAILURE_RETRY(stat(filename, &st));
774
ret = stat(filename, &st);
932
775
if(ret == -1){
933
error(0, errno, "stat");
776
perror("stat");
934
777
free(filename);
935
778
continue;
936
779
}
937
780
938
781
/* Ignore non-executable files */
939
if(not S_ISREG(st.st_mode)
940
or (TEMP_FAILURE_RETRY(access(filename, X_OK)) != 0)){
782
if(not S_ISREG(st.st_mode) or (access(filename, X_OK) != 0)){
941
783
if(debug){
942
784
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
943
785
" with bad type or mode\n", filename);
948
790
949
791
plugin *p = getplugin(dirst->d_name);
950
792
if(p == NULL){
951
error(0, errno, "getplugin");
793
perror("getplugin");
952
794
free(filename);
953
795
continue;
954
796
}
966
808
if(g != NULL){
967
809
for(char **a = g->argv + 1; *a != NULL; a++){
968
810
if(not add_argument(p, *a)){
969
error(0, errno, "add_argument");
811
perror("add_argument");
970
812
}
971
813
}
972
814
/* Add global environment variables */
973
815
for(char **e = g->environ; *e != NULL; e++){
974
816
if(not add_environment(p, *e, false)){
975
error(0, errno, "add_environment");
817
perror("add_environment");
976
818
}
977
819
}
978
820
}
983
825
if(p->environ[0] != NULL){
984
826
for(char **e = environ; *e != NULL; e++){
985
827
if(not add_environment(p, *e, false)){
986
error(0, errno, "add_environment");
828
perror("add_environment");
987
829
}
988
830
}
989
831
}
990
832
991
833
int pipefd[2];
992
ret = (int)TEMP_FAILURE_RETRY(pipe(pipefd));
834
ret = pipe(pipefd);
993
835
if(ret == -1){
994
error(0, errno, "pipe");
995
exitstatus = EX_OSERR;
836
perror("pipe");
837
exitstatus = EXIT_FAILURE;
996
838
goto fallback;
997
839
}
998
840
/* Ask OS to automatic close the pipe on exec */
999
841
ret = set_cloexec_flag(pipefd[0]);
1000
842
if(ret < 0){
1001
error(0, errno, "set_cloexec_flag");
1002
exitstatus = EX_OSERR;
843
perror("set_cloexec_flag");
844
exitstatus = EXIT_FAILURE;
1003
845
goto fallback;
1004
846
}
1005
847
ret = set_cloexec_flag(pipefd[1]);
1006
848
if(ret < 0){
1007
error(0, errno, "set_cloexec_flag");
1008
exitstatus = EX_OSERR;
849
perror("set_cloexec_flag");
850
exitstatus = EXIT_FAILURE;
1009
851
goto fallback;
1010
852
}
1011
853
/* Block SIGCHLD until process is safely in process list */
1012
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_BLOCK,
1013
&sigchld_action.sa_mask,
1014
NULL));
854
ret = sigprocmask(SIG_BLOCK, &sigchld_action.sa_mask, NULL);
1015
855
if(ret < 0){
1016
error(0, errno, "sigprocmask");
1017
exitstatus = EX_OSERR;
856
perror("sigprocmask");
857
exitstatus = EXIT_FAILURE;
1018
858
goto fallback;
1019
859
}
1020
860
/* Starting a new process to be watched */
1021
pid_t pid;
1022
do {
1023
pid = fork();
1024
} while(pid == -1 and errno == EINTR);
861
pid_t pid = fork();
1025
862
if(pid == -1){
1026
error(0, errno, "fork");
1027
exitstatus = EX_OSERR;
863
perror("fork");
864
exitstatus = EXIT_FAILURE;
1028
865
goto fallback;
1029
866
}
1030
867
if(pid == 0){
1031
868
/* this is the child process */
1032
869
ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
1033
870
if(ret < 0){
1034
error(0, errno, "sigaction");
1035
_exit(EX_OSERR);
871
perror("sigaction");
872
_exit(EXIT_FAILURE);
1036
873
}
1037
874
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
1038
875
if(ret < 0){
1039
error(0, errno, "sigprocmask");
1040
_exit(EX_OSERR);
876
perror("sigprocmask");
877
_exit(EXIT_FAILURE);
1041
878
}
1042
879
1043
880
ret = dup2(pipefd[1], STDOUT_FILENO); /* replace our stdout */
1044
881
if(ret == -1){
1045
error(0, errno, "dup2");
1046
_exit(EX_OSERR);
882
perror("dup2");
883
_exit(EXIT_FAILURE);
1047
884
}
1048
885
1049
886
if(dirfd(dir) < 0){
1053
890
}
1054
891
if(p->environ[0] == NULL){
1055
892
if(execv(filename, p->argv) < 0){
1056
error(0, errno, "execv for %s", filename);
1057
_exit(EX_OSERR);
893
perror("execv");
894
_exit(EXIT_FAILURE);
1058
895
}
1059
896
} else {
1060
897
if(execve(filename, p->argv, p->environ) < 0){
1061
error(0, errno, "execve for %s", filename);
1062
_exit(EX_OSERR);
898
perror("execve");
899
_exit(EXIT_FAILURE);
1063
900
}
1064
901
}
1065
902
/* no return */
1066
903
}
1067
904
/* Parent process */
1068
TEMP_FAILURE_RETRY(close(pipefd[1])); /* Close unused write end of
1069
pipe */
905
close(pipefd[1]); /* Close unused write end of pipe */
1070
906
free(filename);
1071
907
plugin *new_plugin = getplugin(dirst->d_name);
1072
908
if(new_plugin == NULL){
1073
error(0, errno, "getplugin");
1074
ret = (int)(TEMP_FAILURE_RETRY
1075
(sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask,
1076
NULL)));
909
perror("getplugin");
910
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
1077
911
if(ret < 0){
1078
error(0, errno, "sigprocmask");
912
perror("sigprocmask");
1079
913
}
1080
exitstatus = EX_OSERR;
914
exitstatus = EXIT_FAILURE;
1081
915
goto fallback;
1082
916
}
1083
917
1086
920
1087
921
/* Unblock SIGCHLD so signal handler can be run if this process
1088
922
has already completed */
1089
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1090
&sigchld_action.sa_mask,
1091
NULL));
923
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
1092
924
if(ret < 0){
1093
error(0, errno, "sigprocmask");
1094
exitstatus = EX_OSERR;
925
perror("sigprocmask");
926
exitstatus = EXIT_FAILURE;
1095
927
goto fallback;
1096
928
}
1097
929
1098
#if defined (__GNUC__) and defined (__GLIBC__)
1099
#if not __GLIBC_PREREQ(2, 16)
1100
#pragma GCC diagnostic push
1101
#pragma GCC diagnostic ignored "-Wsign-conversion"
1102
#endif
1103
#endif
1104
FD_SET(new_plugin->fd, &rfds_all); /* Spurious warning from
1105
-Wconversion in GNU libc
1106
before 2.16 */
1107
#if defined (__GNUC__) and defined (__GLIBC__)
1108
#if not __GLIBC_PREREQ(2, 16)
1109
#pragma GCC diagnostic pop
1110
#endif
1111
#endif
930
FD_SET(new_plugin->fd, &rfds_all);
1112
931
1113
932
if(maxfd < new_plugin->fd){
1114
933
maxfd = new_plugin->fd;
1115
934
}
1116
935
}
1117
936
1118
TEMP_FAILURE_RETRY(closedir(dir));
937
closedir(dir);
1119
938
dir = NULL;
1120
free_plugin(getplugin(NULL));
1121
939
1122
940
for(plugin *p = plugin_list; p != NULL; p = p->next){
1123
941
if(p->pid != 0){
1134
952
while(plugin_list){
1135
953
fd_set rfds = rfds_all;
1136
954
int select_ret = select(maxfd+1, &rfds, NULL, NULL, NULL);
1137
if(select_ret == -1 and errno != EINTR){
1138
error(0, errno, "select");
1139
exitstatus = EX_OSERR;
955
if(select_ret == -1){
956
perror("select");
957
exitstatus = EXIT_FAILURE;
1140
958
goto fallback;
1141
959
}
1142
960
/* OK, now either a process completed, or something can be read
1148
966
if(not WIFEXITED(proc->status)
1149
967
or WEXITSTATUS(proc->status) != 0){
1150
968
/* Bad exit by plugin */
1151
969
1152
970
if(debug){
1153
971
if(WIFEXITED(proc->status)){
1154
fprintf(stderr, "Plugin %s [%" PRIdMAX "] exited with"
1155
" status %d\n", proc->name,
1156
(intmax_t) (proc->pid),
972
fprintf(stderr, "Plugin %" PRIdMAX " exited with status"
973
" %d\n", (intmax_t) (proc->pid),
1157
974
WEXITSTATUS(proc->status));
1158
975
} else if(WIFSIGNALED(proc->status)){
1159
fprintf(stderr, "Plugin %s [%" PRIdMAX "] killed by"
1160
" signal %d: %s\n", proc->name,
1161
(intmax_t) (proc->pid),
1162
WTERMSIG(proc->status),
1163
strsignal(WTERMSIG(proc->status)));
976
fprintf(stderr, "Plugin %" PRIdMAX " killed by signal"
977
" %d\n", (intmax_t) (proc->pid),
978
WTERMSIG(proc->status));
1164
979
} else if(WCOREDUMP(proc->status)){
1165
fprintf(stderr, "Plugin %s [%" PRIdMAX "] dumped"
1166
" core\n", proc->name, (intmax_t) (proc->pid));
980
fprintf(stderr, "Plugin %" PRIdMAX " dumped core\n",
981
(intmax_t) (proc->pid));
1167
982
}
1168
983
}
1169
984
1170
985
/* Remove the plugin */
1171
#if defined (__GNUC__) and defined (__GLIBC__)
1172
#if not __GLIBC_PREREQ(2, 16)
1173
#pragma GCC diagnostic push
1174
#pragma GCC diagnostic ignored "-Wsign-conversion"
1175
#endif
1176
#endif
1177
FD_CLR(proc->fd, &rfds_all); /* Spurious warning from
1178
-Wconversion in GNU libc
1179
before 2.16 */
1180
#if defined (__GNUC__) and defined (__GLIBC__)
1181
#if not __GLIBC_PREREQ(2, 16)
1182
#pragma GCC diagnostic pop
1183
#endif
1184
#endif
1185
986
FD_CLR(proc->fd, &rfds_all);
987
1186
988
/* Block signal while modifying process_list */
1187
ret = (int)TEMP_FAILURE_RETRY(sigprocmask
1188
(SIG_BLOCK,
1189
&sigchld_action.sa_mask,
1190
NULL));
989
ret = sigprocmask(SIG_BLOCK, &sigchld_action.sa_mask, NULL);
1191
990
if(ret < 0){
1192
error(0, errno, "sigprocmask");
1193
exitstatus = EX_OSERR;
991
perror("sigprocmask");
992
exitstatus = EXIT_FAILURE;
1194
993
goto fallback;
1195
994
}
1196
995
1199
998
proc = next_plugin;
1200
999
1201
1000
/* We are done modifying process list, so unblock signal */
1202
ret = (int)(TEMP_FAILURE_RETRY
1203
(sigprocmask(SIG_UNBLOCK,
1204
&sigchld_action.sa_mask, NULL)));
1001
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask,
1002
NULL);
1205
1003
if(ret < 0){
1206
error(0, errno, "sigprocmask");
1207
exitstatus = EX_OSERR;
1004
perror("sigprocmask");
1005
exitstatus = EXIT_FAILURE;
1208
1006
goto fallback;
1209
1007
}
1210
1008
1220
1018
bool bret = print_out_password(proc->buffer,
1221
1019
proc->buffer_length);
1222
1020
if(not bret){
1223
error(0, errno, "print_out_password");
1224
exitstatus = EX_IOERR;
1021
perror("print_out_password");
1022
exitstatus = EXIT_FAILURE;
1225
1023
}
1226
1024
goto fallback;
1227
1025
}
1228
1026
1229
1027
/* This process has not completed. Does it have any output? */
1230
#if defined (__GNUC__) and defined (__GLIBC__)
1231
#if not __GLIBC_PREREQ(2, 16)
1232
#pragma GCC diagnostic push
1233
#pragma GCC diagnostic ignored "-Wsign-conversion"
1234
#endif
1235
#endif
1236
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){ /* Spurious
1237
warning from
1238
-Wconversion
1239
in GNU libc
1240
before
1241
2.16 */
1242
#if defined (__GNUC__) and defined (__GLIBC__)
1243
#if not __GLIBC_PREREQ(2, 16)
1244
#pragma GCC diagnostic pop
1245
#endif
1246
#endif
1028
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){
1247
1029
/* This process had nothing to say at this time */
1248
1030
proc = proc->next;
1249
1031
continue;
1250
1032
}
1251
1033
/* Before reading, make the process' data buffer large enough */
1252
1034
if(proc->buffer_length + BUFFER_SIZE > proc->buffer_size){
1253
char *new_buffer = realloc(proc->buffer, proc->buffer_size
1254
+ (size_t) BUFFER_SIZE);
1255
if(new_buffer == NULL){
1256
error(0, errno, "malloc");
1257
exitstatus = EX_OSERR;
1035
proc->buffer = realloc(proc->buffer, proc->buffer_size
1036
+ (size_t) BUFFER_SIZE);
1037
if(proc->buffer == NULL){
1038
perror("malloc");
1039
exitstatus = EXIT_FAILURE;
1258
1040
goto fallback;
1259
1041
}
1260
proc->buffer = new_buffer;
1261
1042
proc->buffer_size += BUFFER_SIZE;
1262
1043
}
1263
1044
/* Read from the process */
1264
sret = TEMP_FAILURE_RETRY(read(proc->fd,
1265
proc->buffer
1266
+ proc->buffer_length,
1267
BUFFER_SIZE));
1045
sret = read(proc->fd, proc->buffer + proc->buffer_length,
1046
BUFFER_SIZE);
1268
1047
if(sret < 0){
1269
1048
/* Read error from this process; ignore the error */
1270
1049
proc = proc->next;
1278
1057
}
1279
1058
}
1280
1059
}
1281
1282
1060
1061
1283
1062
fallback:
1284
1063
1285
if(plugin_list == NULL or (exitstatus != EXIT_SUCCESS
1286
and exitstatus != EX_OK)){
1064
if(plugin_list == NULL or exitstatus != EXIT_SUCCESS){
1287
1065
/* Fallback if all plugins failed, none are found or an error
1288
1066
occured */
1289
1067
bool bret;
1297
1075
}
1298
1076
bret = print_out_password(passwordbuffer, len);
1299
1077
if(not bret){
1300
error(0, errno, "print_out_password");
1301
exitstatus = EX_IOERR;
1078
perror("print_out_password");
1079
exitstatus = EXIT_FAILURE;
1302
1080
}
1303
1081
}
1304
1082
1305
1083
/* Restore old signal handler */
1306
1084
ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
1307
1085
if(ret == -1){
1308
error(0, errno, "sigaction");
1309
exitstatus = EX_OSERR;
1086
perror("sigaction");
1087
exitstatus = EXIT_FAILURE;
1310
1088
}
1311
1089
1312
1090
if(custom_argv != NULL){
1327
1105
ret = kill(p->pid, SIGTERM);
1328
1106
if(ret == -1 and errno != ESRCH){
1329
1107
/* Set-uid proccesses might not get closed */
1330
error(0, errno, "kill");
1108
perror("kill");
1331
1109
}
1332
1110
}
1333
1111
}
1334
1112
1335
1113
/* Wait for any remaining child processes to terminate */
1336
do {
1114
do{
1337
1115
ret = wait(NULL);
1338
1116
} while(ret >= 0);
1339
1117
if(errno != ECHILD){
1340
error(0, errno, "wait");
1118
perror("wait");
1341
1119
}
1342
1120
1343
1121
free_plugin_list();
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0