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- Committer: Teddy Hogeborn
- Date: 2009-02-09 19:26:19 UTC
- mto: (24.1.136 mandos) (237.4.2 mandos-pipe-ipc) (299.1.1 release) (300.1.1 release) (301.1.1 release)
- mto: This revision was merged to the branch mainline in revision 250.
- Revision ID: teddy@fukt.bsnet.se-20090209192619-7rse82x9pypq4ihk
* plugin-runner.c: Comment change.
* plugins.d/mandos-client.c: Comment changes.
(quit_now): New global flag.
(handle_sigterm): Only call avahi_simple_poll_quit once.
(main): Also handle SIGINT and SIGHUP.
* plugins.d/mandos-client.c: Comment changes.
(quit_now): New global flag.
(handle_sigterm): Only call avahi_simple_poll_quit once.
(main): Also handle SIGINT and SIGHUP.
- 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(),
49
48
F_GETFD, F_SETFD, FD_CLOEXEC,
50
49
access(), pipe(), fork(), close()
51
50
dup2(), STDOUT_FILENO, _exit(),
52
execve(), write(), read(),
51
execv(), write(), read(),
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,
67
65
SIG_UNBLOCK, kill(), sig_atomic_t
68
66
*/
69
67
#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() */
68
#include <inttypes.h> /* intmax_t, SCNdMAX, PRIdMAX, */
75
69
76
70
#define BUFFER_SIZE 256
77
71
79
73
#define AFILE "/conf/conf.d/mandos/plugin-runner.conf"
80
74
81
75
const char *argp_program_version = "plugin-runner " VERSION;
82
const char *argp_program_bug_address = "<mandos@recompile.se>";
76
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
83
77
84
78
typedef struct plugin{
85
79
char *name; /* can be NULL or any plugin name */
88
82
char **environ;
89
83
int envc;
90
84
bool disabled;
91
85
92
86
/* Variables used for running processes*/
93
87
pid_t pid;
94
88
int fd;
105
99
106
100
/* Gets an existing plugin based on name,
107
101
or if none is found, creates a new one */
108
__attribute__((warn_unused_result))
109
102
static plugin *getplugin(char *name){
110
/* Check for existing plugin with that name */
103
/* Check for exiting plugin with that name */
111
104
for(plugin *p = plugin_list; p != NULL; p = p->next){
112
105
if((p->name == name)
113
106
or (p->name and name and (strcmp(p->name, name) == 0))){
115
108
}
116
109
}
117
110
/* Create a new plugin */
118
plugin *new_plugin = NULL;
119
do {
120
new_plugin = malloc(sizeof(plugin));
121
} while(new_plugin == NULL and errno == EINTR);
111
plugin *new_plugin = malloc(sizeof(plugin));
122
112
if(new_plugin == NULL){
123
113
return NULL;
124
114
}
125
115
char *copy_name = NULL;
126
116
if(name != NULL){
127
do {
128
copy_name = strdup(name);
129
} while(copy_name == NULL and errno == EINTR);
117
copy_name = strdup(name);
130
118
if(copy_name == NULL){
131
int e = errno;
132
119
free(new_plugin);
133
errno = e;
134
120
return NULL;
135
121
}
136
122
}
140
126
.disabled = false,
141
127
.next = plugin_list };
142
128
143
do {
144
new_plugin->argv = malloc(sizeof(char *) * 2);
145
} while(new_plugin->argv == NULL and errno == EINTR);
129
new_plugin->argv = malloc(sizeof(char *) * 2);
146
130
if(new_plugin->argv == NULL){
147
int e = errno;
148
131
free(copy_name);
149
132
free(new_plugin);
150
errno = e;
151
133
return NULL;
152
134
}
153
135
new_plugin->argv[0] = copy_name;
154
136
new_plugin->argv[1] = NULL;
155
137
156
do {
157
new_plugin->environ = malloc(sizeof(char *));
158
} while(new_plugin->environ == NULL and errno == EINTR);
138
new_plugin->environ = malloc(sizeof(char *));
159
139
if(new_plugin->environ == NULL){
160
int e = errno;
161
140
free(copy_name);
162
141
free(new_plugin->argv);
163
142
free(new_plugin);
164
errno = e;
165
143
return NULL;
166
144
}
167
145
new_plugin->environ[0] = NULL;
172
150
}
173
151
174
152
/* Helper function for add_argument and add_environment */
175
__attribute__((nonnull, warn_unused_result))
176
153
static bool add_to_char_array(const char *new, char ***array,
177
154
int *len){
178
155
/* Resize the pointed-to array to hold one more pointer */
179
char **new_array = NULL;
180
do {
181
new_array = realloc(*array, sizeof(char *)
182
* (size_t) ((*len) + 2));
183
} while(new_array == NULL and errno == EINTR);
156
*array = realloc(*array, sizeof(char *)
157
* (size_t) ((*len) + 2));
184
158
/* Malloc check */
185
if(new_array == NULL){
159
if(*array == NULL){
186
160
return false;
187
161
}
188
*array = new_array;
189
162
/* Make a copy of the new string */
190
char *copy;
191
do {
192
copy = strdup(new);
193
} while(copy == NULL and errno == EINTR);
163
char *copy = strdup(new);
194
164
if(copy == NULL){
195
165
return false;
196
166
}
203
173
}
204
174
205
175
/* Add to a plugin's argument vector */
206
__attribute__((nonnull(2), warn_unused_result))
207
176
static bool add_argument(plugin *p, const char *arg){
208
177
if(p == NULL){
209
178
return false;
212
181
}
213
182
214
183
/* Add to a plugin's environment */
215
__attribute__((nonnull(2), warn_unused_result))
216
184
static bool add_environment(plugin *p, const char *def, bool replace){
217
185
if(p == NULL){
218
186
return false;
220
188
/* namelen = length of name of environment variable */
221
189
size_t namelen = (size_t)(strchrnul(def, '=') - def);
222
190
/* Search for this environment variable */
223
for(char **envdef = p->environ; *envdef != NULL; envdef++){
224
if(strncmp(*envdef, def, namelen + 1) == 0){
191
for(char **e = p->environ; *e != NULL; e++){
192
if(strncmp(*e, def, namelen + 1) == 0){
225
193
/* It already exists */
226
194
if(replace){
227
char *new_envdef;
228
do {
229
new_envdef = realloc(*envdef, strlen(def) + 1);
230
} while(new_envdef == NULL and errno == EINTR);
231
if(new_envdef == NULL){
195
char *new = realloc(*e, strlen(def) + 1);
196
if(new == NULL){
232
197
return false;
233
198
}
234
*envdef = new_envdef;
235
strcpy(*envdef, def);
199
*e = new;
200
strcpy(*e, def);
236
201
}
237
202
return true;
238
203
}
243
208
/*
244
209
* Based on the example in the GNU LibC manual chapter 13.13 "File
245
210
* Descriptor Flags".
246
| [[info:libc:Descriptor%20Flags][File Descriptor Flags]] |
211
* *Note File Descriptor Flags:(libc)Descriptor Flags.
247
212
*/
248
__attribute__((warn_unused_result))
249
213
static int set_cloexec_flag(int fd){
250
int ret = (int)TEMP_FAILURE_RETRY(fcntl(fd, F_GETFD, 0));
214
int ret = fcntl(fd, F_GETFD, 0);
251
215
/* If reading the flags failed, return error indication now. */
252
216
if(ret < 0){
253
217
return ret;
254
218
}
255
219
/* Store modified flag word in the descriptor. */
256
return (int)TEMP_FAILURE_RETRY(fcntl(fd, F_SETFD,
257
ret | FD_CLOEXEC));
220
return fcntl(fd, F_SETFD, ret | FD_CLOEXEC);
258
221
}
259
222
260
223
275
238
/* No child processes */
276
239
break;
277
240
}
278
error(0, errno, "waitpid");
241
perror("waitpid");
279
242
}
280
243
281
244
/* A child exited, find it in process_list */
293
256
}
294
257
295
258
/* Prints out a password to stdout */
296
__attribute__((nonnull, warn_unused_result))
297
259
static bool print_out_password(const char *buffer, size_t length){
298
260
ssize_t ret;
299
261
for(size_t written = 0; written < length; written += (size_t)ret){
307
269
}
308
270
309
271
/* Removes and free a plugin from the plugin list */
310
__attribute__((nonnull))
311
272
static void free_plugin(plugin *plugin_node){
312
273
313
274
for(char **arg = plugin_node->argv; *arg != NULL; arg++){
319
280
}
320
281
free(plugin_node->environ);
321
282
free(plugin_node->buffer);
322
283
323
284
/* Removes the plugin from the singly-linked list */
324
285
if(plugin_node == plugin_list){
325
286
/* First one - simple */
352
313
struct dirent *dirst;
353
314
struct stat st;
354
315
fd_set rfds_all;
355
int ret, maxfd = 0;
316
int ret, numchars, maxfd = 0;
356
317
ssize_t sret;
318
intmax_t tmpmax;
357
319
uid_t uid = 65534;
358
320
gid_t gid = 65534;
359
321
bool debug = false;
368
330
sigemptyset(&sigchld_action.sa_mask);
369
331
ret = sigaddset(&sigchld_action.sa_mask, SIGCHLD);
370
332
if(ret == -1){
371
error(0, errno, "sigaddset");
372
exitstatus = EX_OSERR;
333
perror("sigaddset");
334
exitstatus = EXIT_FAILURE;
373
335
goto fallback;
374
336
}
375
337
ret = sigaction(SIGCHLD, &sigchld_action, &old_sigchld_action);
376
338
if(ret == -1){
377
error(0, errno, "sigaction");
378
exitstatus = EX_OSERR;
339
perror("sigaction");
340
exitstatus = EXIT_FAILURE;
379
341
goto fallback;
380
342
}
381
343
413
375
.doc = "Group ID the plugins will run as", .group = 3 },
414
376
{ .name = "debug", .key = 132,
415
377
.doc = "Debug mode", .group = 4 },
416
/*
417
* These reproduce what we would get without ARGP_NO_HELP
418
*/
419
{ .name = "help", .key = '?',
420
.doc = "Give this help list", .group = -1 },
421
{ .name = "usage", .key = -3,
422
.doc = "Give a short usage message", .group = -1 },
423
{ .name = "version", .key = 'V',
424
.doc = "Print program version", .group = -1 },
425
378
{ .name = NULL }
426
379
};
427
380
428
__attribute__((nonnull(3)))
429
error_t parse_opt(int key, char *arg, struct argp_state *state){
430
errno = 0;
381
error_t parse_opt(int key, char *arg, __attribute__((unused))
382
struct argp_state *state){
431
383
switch(key){
432
char *tmp;
433
intmax_t tmp_id;
434
384
case 'g': /* --global-options */
435
{
385
if(arg != NULL){
436
386
char *plugin_option;
437
387
while((plugin_option = strsep(&arg, ",")) != NULL){
388
if(plugin_option[0] == '\0'){
389
continue;
390
}
438
391
if(not add_argument(getplugin(NULL), plugin_option)){
439
break;
392
perror("add_argument");
393
return ARGP_ERR_UNKNOWN;
440
394
}
441
395
}
442
errno = 0;
443
396
}
444
397
break;
445
398
case 'G': /* --global-env */
446
if(add_environment(getplugin(NULL), arg, true)){
447
errno = 0;
399
if(arg == NULL){
400
break;
401
}
402
if(not add_environment(getplugin(NULL), arg, true)){
403
perror("add_environment");
448
404
}
449
405
break;
450
406
case 'o': /* --options-for */
451
{
452
char *option_list = strchr(arg, ':');
453
if(option_list == NULL){
454
argp_error(state, "No colon in \"%s\"", arg);
455
errno = EINVAL;
456
break;
457
}
458
*option_list = '\0';
459
option_list++;
460
if(arg[0] == '\0'){
461
argp_error(state, "Empty plugin name");
462
errno = EINVAL;
463
break;
464
}
465
char *option;
466
while((option = strsep(&option_list, ",")) != NULL){
467
if(not add_argument(getplugin(arg), option)){
468
break;
407
if(arg != NULL){
408
char *plugin_name = strsep(&arg, ":");
409
if(plugin_name[0] == '\0'){
410
break;
411
}
412
char *plugin_option;
413
while((plugin_option = strsep(&arg, ",")) != NULL){
414
if(not add_argument(getplugin(plugin_name), plugin_option)){
415
perror("add_argument");
416
return ARGP_ERR_UNKNOWN;
469
417
}
470
418
}
471
errno = 0;
472
419
}
473
420
break;
474
421
case 'E': /* --env-for */
422
if(arg == NULL){
423
break;
424
}
475
425
{
476
426
char *envdef = strchr(arg, ':');
477
427
if(envdef == NULL){
478
argp_error(state, "No colon in \"%s\"", arg);
479
errno = EINVAL;
480
428
break;
481
429
}
482
430
*envdef = '\0';
483
envdef++;
484
if(arg[0] == '\0'){
485
argp_error(state, "Empty plugin name");
486
errno = EINVAL;
487
break;
488
}
489
if(add_environment(getplugin(arg), envdef, true)){
490
errno = 0;
431
if(not add_environment(getplugin(arg), envdef+1, true)){
432
perror("add_environment");
491
433
}
492
434
}
493
435
break;
494
436
case 'd': /* --disable */
495
{
437
if(arg != NULL){
496
438
plugin *p = getplugin(arg);
497
if(p != NULL){
498
p->disabled = true;
499
errno = 0;
439
if(p == NULL){
440
return ARGP_ERR_UNKNOWN;
500
441
}
442
p->disabled = true;
501
443
}
502
444
break;
503
445
case 'e': /* --enable */
504
{
446
if(arg != NULL){
505
447
plugin *p = getplugin(arg);
506
if(p != NULL){
507
p->disabled = false;
508
errno = 0;
448
if(p == NULL){
449
return ARGP_ERR_UNKNOWN;
509
450
}
451
p->disabled = false;
510
452
}
511
453
break;
512
454
case 128: /* --plugin-dir */
513
455
free(plugindir);
514
456
plugindir = strdup(arg);
515
if(plugindir != NULL){
516
errno = 0;
517
}
457
if(plugindir == NULL){
458
perror("strdup");
459
}
518
460
break;
519
461
case 129: /* --config-file */
520
462
/* This is already done by parse_opt_config_file() */
521
463
break;
522
464
case 130: /* --userid */
523
tmp_id = strtoimax(arg, &tmp, 10);
524
if(errno != 0 or tmp == arg or *tmp != '\0'
525
or tmp_id != (uid_t)tmp_id){
526
argp_error(state, "Bad user ID number: \"%s\", using %"
527
PRIdMAX, arg, (intmax_t)uid);
528
break;
465
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
466
if(ret < 1 or tmpmax != (uid_t)tmpmax
467
or arg[numchars] != '\0'){
468
fprintf(stderr, "Bad user ID number: \"%s\", using %"
469
PRIdMAX "\n", arg, (intmax_t)uid);
470
} else {
471
uid = (uid_t)tmpmax;
529
472
}
530
uid = (uid_t)tmp_id;
531
errno = 0;
532
473
break;
533
474
case 131: /* --groupid */
534
tmp_id = strtoimax(arg, &tmp, 10);
535
if(errno != 0 or tmp == arg or *tmp != '\0'
536
or tmp_id != (gid_t)tmp_id){
537
argp_error(state, "Bad group ID number: \"%s\", using %"
538
PRIdMAX, arg, (intmax_t)gid);
539
break;
475
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
476
if(ret < 1 or tmpmax != (gid_t)tmpmax
477
or arg[numchars] != '\0'){
478
fprintf(stderr, "Bad group ID number: \"%s\", using %"
479
PRIdMAX "\n", arg, (intmax_t)gid);
480
} else {
481
gid = (gid_t)tmpmax;
540
482
}
541
gid = (gid_t)tmp_id;
542
errno = 0;
543
483
break;
544
484
case 132: /* --debug */
545
485
debug = true;
546
486
break;
547
/*
548
* These reproduce what we would get without ARGP_NO_HELP
549
*/
550
case '?': /* --help */
551
state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
552
argp_state_help(state, state->out_stream, ARGP_HELP_STD_HELP);
553
case -3: /* --usage */
554
state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
555
argp_state_help(state, state->out_stream,
556
ARGP_HELP_USAGE | ARGP_HELP_EXIT_OK);
557
case 'V': /* --version */
558
fprintf(state->out_stream, "%s\n", argp_program_version);
559
exit(EXIT_SUCCESS);
560
break;
561
487
/*
562
488
* When adding more options before this line, remember to also add a
563
489
* "case" to the "parse_opt_config_file" function below.
566
492
/* Cryptsetup always passes an argument, which is an empty
567
493
string if "none" was specified in /etc/crypttab. So if
568
494
argument was empty, we ignore it silently. */
569
if(arg[0] == '\0'){
570
break;
495
if(arg[0] != '\0'){
496
fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
571
497
}
498
break;
499
case ARGP_KEY_END:
500
break;
572
501
default:
573
502
return ARGP_ERR_UNKNOWN;
574
503
}
575
return errno; /* Set to 0 at start */
504
return 0;
576
505
}
577
506
578
507
/* This option parser is the same as parse_opt() above, except it
580
509
error_t parse_opt_config_file(int key, char *arg,
581
510
__attribute__((unused))
582
511
struct argp_state *state){
583
errno = 0;
584
512
switch(key){
585
513
case 'g': /* --global-options */
586
514
case 'G': /* --global-env */
593
521
case 129: /* --config-file */
594
522
free(argfile);
595
523
argfile = strdup(arg);
596
if(argfile != NULL){
597
errno = 0;
524
if(argfile == NULL){
525
perror("strdup");
598
526
}
599
break;
527
break;
600
528
case 130: /* --userid */
601
529
case 131: /* --groupid */
602
530
case 132: /* --debug */
603
case '?': /* --help */
604
case -3: /* --usage */
605
case 'V': /* --version */
606
531
case ARGP_KEY_ARG:
532
case ARGP_KEY_END:
607
533
break;
608
534
default:
609
535
return ARGP_ERR_UNKNOWN;
610
536
}
611
return errno;
537
return 0;
612
538
}
613
539
614
540
struct argp argp = { .options = options,
618
544
619
545
/* Parse using parse_opt_config_file() in order to get the custom
620
546
config file location, if any. */
621
ret = argp_parse(&argp, argc, argv,
622
ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
623
NULL, NULL);
624
switch(ret){
625
case 0:
626
break;
627
case ENOMEM:
628
default:
629
errno = ret;
630
error(0, errno, "argp_parse");
631
exitstatus = EX_OSERR;
632
goto fallback;
633
case EINVAL:
634
exitstatus = EX_USAGE;
547
ret = argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
548
if(ret == ARGP_ERR_UNKNOWN){
549
fprintf(stderr, "Unknown error while parsing arguments\n");
550
exitstatus = EXIT_FAILURE;
635
551
goto fallback;
636
552
}
637
553
643
559
conffp = fopen(AFILE, "r");
644
560
} else {
645
561
conffp = fopen(argfile, "r");
646
}
562
}
647
563
if(conffp != NULL){
648
564
char *org_line = NULL;
649
565
char *p, *arg, *new_arg, *line;
650
566
size_t size = 0;
651
567
const char whitespace_delims[] = " \r\t\f\v\n";
652
568
const char comment_delim[] = "#";
653
569
654
570
custom_argc = 1;
655
571
custom_argv = malloc(sizeof(char*) * 2);
656
572
if(custom_argv == NULL){
657
error(0, errno, "malloc");
658
exitstatus = EX_OSERR;
573
perror("malloc");
574
exitstatus = EXIT_FAILURE;
659
575
goto fallback;
660
576
}
661
577
custom_argv[0] = argv[0];
662
578
custom_argv[1] = NULL;
663
579
664
580
/* for each line in the config file, strip whitespace and ignore
665
581
commented text */
666
582
while(true){
668
584
if(sret == -1){
669
585
break;
670
586
}
671
587
672
588
line = org_line;
673
589
arg = strsep(&line, comment_delim);
674
590
while((p = strsep(&arg, whitespace_delims)) != NULL){
677
593
}
678
594
new_arg = strdup(p);
679
595
if(new_arg == NULL){
680
error(0, errno, "strdup");
681
exitstatus = EX_OSERR;
596
perror("strdup");
597
exitstatus = EXIT_FAILURE;
682
598
free(org_line);
683
599
goto fallback;
684
600
}
685
601
686
602
custom_argc += 1;
687
{
688
char **new_argv = realloc(custom_argv, sizeof(char *)
689
* ((unsigned int)
690
custom_argc + 1));
691
if(new_argv == NULL){
692
error(0, errno, "realloc");
693
exitstatus = EX_OSERR;
694
free(new_arg);
695
free(org_line);
696
goto fallback;
697
} else {
698
custom_argv = new_argv;
699
}
603
custom_argv = realloc(custom_argv, sizeof(char *)
604
* ((unsigned int) custom_argc + 1));
605
if(custom_argv == NULL){
606
perror("realloc");
607
exitstatus = EXIT_FAILURE;
608
free(org_line);
609
goto fallback;
700
610
}
701
611
custom_argv[custom_argc-1] = new_arg;
702
custom_argv[custom_argc] = NULL;
612
custom_argv[custom_argc] = NULL;
703
613
}
704
614
}
705
do {
706
ret = fclose(conffp);
707
} while(ret == EOF and errno == EINTR);
708
if(ret == EOF){
709
error(0, errno, "fclose");
710
exitstatus = EX_IOERR;
711
goto fallback;
712
}
713
615
free(org_line);
714
616
} else {
715
617
/* Check for harmful errors and go to fallback. Other errors might
716
618
not affect opening plugins */
717
619
if(errno == EMFILE or errno == ENFILE or errno == ENOMEM){
718
error(0, errno, "fopen");
719
exitstatus = EX_OSERR;
620
perror("fopen");
621
exitstatus = EXIT_FAILURE;
720
622
goto fallback;
721
623
}
722
624
}
723
/* If there were any arguments from the configuration file, pass
724
them to parser as command line arguments */
625
/* If there was any arguments from configuration file,
626
pass them to parser as command arguments */
725
627
if(custom_argv != NULL){
726
ret = argp_parse(&argp, custom_argc, custom_argv,
727
ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
728
NULL, NULL);
729
switch(ret){
730
case 0:
731
break;
732
case ENOMEM:
733
default:
734
errno = ret;
735
error(0, errno, "argp_parse");
736
exitstatus = EX_OSERR;
737
goto fallback;
738
case EINVAL:
739
exitstatus = EX_CONFIG;
628
ret = argp_parse(&argp, custom_argc, custom_argv, ARGP_IN_ORDER,
629
0, NULL);
630
if(ret == ARGP_ERR_UNKNOWN){
631
fprintf(stderr, "Unknown error while parsing arguments\n");
632
exitstatus = EXIT_FAILURE;
740
633
goto fallback;
741
634
}
742
635
}
743
636
744
637
/* Parse actual command line arguments, to let them override the
745
638
config file */
746
ret = argp_parse(&argp, argc, argv,
747
ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
748
NULL, NULL);
749
switch(ret){
750
case 0:
751
break;
752
case ENOMEM:
753
default:
754
errno = ret;
755
error(0, errno, "argp_parse");
756
exitstatus = EX_OSERR;
757
goto fallback;
758
case EINVAL:
759
exitstatus = EX_USAGE;
639
ret = argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
640
if(ret == ARGP_ERR_UNKNOWN){
641
fprintf(stderr, "Unknown error while parsing arguments\n");
642
exitstatus = EXIT_FAILURE;
760
643
goto fallback;
761
644
}
762
645
774
657
}
775
658
}
776
659
777
if(getuid() == 0){
778
/* Work around Debian bug #633582:
779
<http://bugs.debian.org/633582> */
780
int plugindir_fd = open(/* plugindir or */ PDIR, O_RDONLY);
781
if(plugindir_fd == -1){
782
error(0, errno, "open(\"" PDIR "\")");
783
} else {
784
ret = (int)TEMP_FAILURE_RETRY(fstat(plugindir_fd, &st));
785
if(ret == -1){
786
error(0, errno, "fstat");
787
} else {
788
if(S_ISDIR(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
789
ret = fchown(plugindir_fd, uid, gid);
790
if(ret == -1){
791
error(0, errno, "fchown");
792
}
793
}
794
}
795
TEMP_FAILURE_RETRY(close(plugindir_fd));
796
}
797
}
798
799
/* Lower permissions */
800
ret = setgid(gid);
660
/* Strip permissions down to nobody */
661
setgid(gid);
801
662
if(ret == -1){
802
error(0, errno, "setgid");
663
perror("setgid");
803
664
}
804
665
ret = setuid(uid);
805
666
if(ret == -1){
806
error(0, errno, "setuid");
807
}
808
809
/* Open plugin directory with close_on_exec flag */
667
perror("setuid");
668
}
669
670
if(plugindir == NULL){
671
dir = opendir(PDIR);
672
} else {
673
dir = opendir(plugindir);
674
}
675
676
if(dir == NULL){
677
perror("Could not open plugin dir");
678
exitstatus = EXIT_FAILURE;
679
goto fallback;
680
}
681
682
/* Set the FD_CLOEXEC flag on the directory, if possible */
810
683
{
811
int dir_fd = -1;
812
if(plugindir == NULL){
813
dir_fd = open(PDIR, O_RDONLY |
814
#ifdef O_CLOEXEC
815
O_CLOEXEC
816
#else /* not O_CLOEXEC */
817
0
818
#endif /* not O_CLOEXEC */
819
);
820
} else {
821
dir_fd = open(plugindir, O_RDONLY |
822
#ifdef O_CLOEXEC
823
O_CLOEXEC
824
#else /* not O_CLOEXEC */
825
0
826
#endif /* not O_CLOEXEC */
827
);
828
}
829
if(dir_fd == -1){
830
error(0, errno, "Could not open plugin dir");
831
exitstatus = EX_UNAVAILABLE;
832
goto fallback;
833
}
834
835
#ifndef O_CLOEXEC
836
/* Set the FD_CLOEXEC flag on the directory */
837
ret = set_cloexec_flag(dir_fd);
838
if(ret < 0){
839
error(0, errno, "set_cloexec_flag");
840
TEMP_FAILURE_RETRY(close(dir_fd));
841
exitstatus = EX_OSERR;
842
goto fallback;
843
}
844
#endif /* O_CLOEXEC */
845
846
dir = fdopendir(dir_fd);
847
if(dir == NULL){
848
error(0, errno, "Could not open plugin dir");
849
TEMP_FAILURE_RETRY(close(dir_fd));
850
exitstatus = EX_OSERR;
851
goto fallback;
684
int dir_fd = dirfd(dir);
685
if(dir_fd >= 0){
686
ret = set_cloexec_flag(dir_fd);
687
if(ret < 0){
688
perror("set_cloexec_flag");
689
exitstatus = EXIT_FAILURE;
690
goto fallback;
691
}
852
692
}
853
693
}
854
694
856
696
857
697
/* Read and execute any executable in the plugin directory*/
858
698
while(true){
859
do {
860
dirst = readdir(dir);
861
} while(dirst == NULL and errno == EINTR);
699
dirst = readdir(dir);
862
700
863
701
/* All directory entries have been processed */
864
702
if(dirst == NULL){
865
703
if(errno == EBADF){
866
error(0, errno, "readdir");
867
exitstatus = EX_IOERR;
704
perror("readdir");
705
exitstatus = EXIT_FAILURE;
868
706
goto fallback;
869
707
}
870
708
break;
876
714
{
877
715
bool bad_name = false;
878
716
879
const char * const bad_prefixes[] = { ".", "#", NULL };
717
const char const *bad_prefixes[] = { ".", "#", NULL };
880
718
881
const char * const bad_suffixes[] = { "~", "#", ".dpkg-new",
719
const char const *bad_suffixes[] = { "~", "#", ".dpkg-new",
882
720
".dpkg-old",
883
721
".dpkg-bak",
884
722
".dpkg-divert", NULL };
885
#ifdef __GNUC__
886
#pragma GCC diagnostic push
887
#pragma GCC diagnostic ignored "-Wcast-qual"
888
#endif
889
for(const char **pre = (const char **)bad_prefixes;
890
*pre != NULL; pre++){
891
#ifdef __GNUC__
892
#pragma GCC diagnostic pop
893
#endif
723
for(const char **pre = bad_prefixes; *pre != NULL; pre++){
894
724
size_t pre_len = strlen(*pre);
895
725
if((d_name_len >= pre_len)
896
726
and strncmp((dirst->d_name), *pre, pre_len) == 0){
905
735
if(bad_name){
906
736
continue;
907
737
}
908
#ifdef __GNUC__
909
#pragma GCC diagnostic push
910
#pragma GCC diagnostic ignored "-Wcast-qual"
911
#endif
912
for(const char **suf = (const char **)bad_suffixes;
913
*suf != NULL; suf++){
914
#ifdef __GNUC__
915
#pragma GCC diagnostic pop
916
#endif
738
for(const char **suf = bad_suffixes; *suf != NULL; suf++){
917
739
size_t suf_len = strlen(*suf);
918
740
if((d_name_len >= suf_len)
919
and (strcmp((dirst->d_name) + d_name_len-suf_len, *suf)
741
and (strcmp((dirst->d_name)+d_name_len-suf_len, *suf)
920
742
== 0)){
921
743
if(debug){
922
744
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
931
753
continue;
932
754
}
933
755
}
934
756
935
757
char *filename;
936
758
if(plugindir == NULL){
937
ret = (int)TEMP_FAILURE_RETRY(asprintf(&filename, PDIR "/%s",
938
dirst->d_name));
759
ret = asprintf(&filename, PDIR "/%s", dirst->d_name);
939
760
} else {
940
ret = (int)TEMP_FAILURE_RETRY(asprintf(&filename, "%s/%s",
941
plugindir,
942
dirst->d_name));
761
ret = asprintf(&filename, "%s/%s", plugindir, dirst->d_name);
943
762
}
944
763
if(ret < 0){
945
error(0, errno, "asprintf");
764
perror("asprintf");
946
765
continue;
947
766
}
948
767
949
ret = (int)TEMP_FAILURE_RETRY(stat(filename, &st));
768
ret = stat(filename, &st);
950
769
if(ret == -1){
951
error(0, errno, "stat");
770
perror("stat");
952
771
free(filename);
953
772
continue;
954
773
}
955
774
956
775
/* Ignore non-executable files */
957
if(not S_ISREG(st.st_mode)
958
or (TEMP_FAILURE_RETRY(access(filename, X_OK)) != 0)){
776
if(not S_ISREG(st.st_mode) or (access(filename, X_OK) != 0)){
959
777
if(debug){
960
778
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
961
779
" with bad type or mode\n", filename);
966
784
967
785
plugin *p = getplugin(dirst->d_name);
968
786
if(p == NULL){
969
error(0, errno, "getplugin");
787
perror("getplugin");
970
788
free(filename);
971
789
continue;
972
790
}
984
802
if(g != NULL){
985
803
for(char **a = g->argv + 1; *a != NULL; a++){
986
804
if(not add_argument(p, *a)){
987
error(0, errno, "add_argument");
805
perror("add_argument");
988
806
}
989
807
}
990
808
/* Add global environment variables */
991
809
for(char **e = g->environ; *e != NULL; e++){
992
810
if(not add_environment(p, *e, false)){
993
error(0, errno, "add_environment");
811
perror("add_environment");
994
812
}
995
813
}
996
814
}
1001
819
if(p->environ[0] != NULL){
1002
820
for(char **e = environ; *e != NULL; e++){
1003
821
if(not add_environment(p, *e, false)){
1004
error(0, errno, "add_environment");
822
perror("add_environment");
1005
823
}
1006
824
}
1007
825
}
1008
826
1009
827
int pipefd[2];
1010
ret = (int)TEMP_FAILURE_RETRY(pipe(pipefd));
828
ret = pipe(pipefd);
1011
829
if(ret == -1){
1012
error(0, errno, "pipe");
1013
exitstatus = EX_OSERR;
830
perror("pipe");
831
exitstatus = EXIT_FAILURE;
1014
832
goto fallback;
1015
833
}
1016
834
/* Ask OS to automatic close the pipe on exec */
1017
835
ret = set_cloexec_flag(pipefd[0]);
1018
836
if(ret < 0){
1019
error(0, errno, "set_cloexec_flag");
1020
exitstatus = EX_OSERR;
837
perror("set_cloexec_flag");
838
exitstatus = EXIT_FAILURE;
1021
839
goto fallback;
1022
840
}
1023
841
ret = set_cloexec_flag(pipefd[1]);
1024
842
if(ret < 0){
1025
error(0, errno, "set_cloexec_flag");
1026
exitstatus = EX_OSERR;
843
perror("set_cloexec_flag");
844
exitstatus = EXIT_FAILURE;
1027
845
goto fallback;
1028
846
}
1029
847
/* Block SIGCHLD until process is safely in process list */
1030
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_BLOCK,
1031
&sigchld_action.sa_mask,
1032
NULL));
848
ret = sigprocmask(SIG_BLOCK, &sigchld_action.sa_mask, NULL);
1033
849
if(ret < 0){
1034
error(0, errno, "sigprocmask");
1035
exitstatus = EX_OSERR;
850
perror("sigprocmask");
851
exitstatus = EXIT_FAILURE;
1036
852
goto fallback;
1037
853
}
1038
854
/* Starting a new process to be watched */
1039
pid_t pid;
1040
do {
1041
pid = fork();
1042
} while(pid == -1 and errno == EINTR);
855
pid_t pid = fork();
1043
856
if(pid == -1){
1044
error(0, errno, "fork");
1045
exitstatus = EX_OSERR;
857
perror("fork");
858
exitstatus = EXIT_FAILURE;
1046
859
goto fallback;
1047
860
}
1048
861
if(pid == 0){
1049
862
/* this is the child process */
1050
863
ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
1051
864
if(ret < 0){
1052
error(0, errno, "sigaction");
1053
_exit(EX_OSERR);
865
perror("sigaction");
866
_exit(EXIT_FAILURE);
1054
867
}
1055
868
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
1056
869
if(ret < 0){
1057
error(0, errno, "sigprocmask");
1058
_exit(EX_OSERR);
870
perror("sigprocmask");
871
_exit(EXIT_FAILURE);
1059
872
}
1060
873
1061
874
ret = dup2(pipefd[1], STDOUT_FILENO); /* replace our stdout */
1062
875
if(ret == -1){
1063
error(0, errno, "dup2");
1064
_exit(EX_OSERR);
876
perror("dup2");
877
_exit(EXIT_FAILURE);
1065
878
}
1066
879
1067
880
if(dirfd(dir) < 0){
1069
882
above and must now close it manually here. */
1070
883
closedir(dir);
1071
884
}
1072
if(execve(filename, p->argv,
1073
(p->environ[0] != NULL) ? p->environ : environ) < 0){
1074
error(0, errno, "execve for %s", filename);
1075
_exit(EX_OSERR);
885
if(p->environ[0] == NULL){
886
if(execv(filename, p->argv) < 0){
887
perror("execv");
888
_exit(EXIT_FAILURE);
889
}
890
} else {
891
if(execve(filename, p->argv, p->environ) < 0){
892
perror("execve");
893
_exit(EXIT_FAILURE);
894
}
1076
895
}
1077
896
/* no return */
1078
897
}
1079
898
/* Parent process */
1080
TEMP_FAILURE_RETRY(close(pipefd[1])); /* Close unused write end of
1081
pipe */
899
close(pipefd[1]); /* Close unused write end of pipe */
1082
900
free(filename);
1083
901
plugin *new_plugin = getplugin(dirst->d_name);
1084
902
if(new_plugin == NULL){
1085
error(0, errno, "getplugin");
1086
ret = (int)(TEMP_FAILURE_RETRY
1087
(sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask,
1088
NULL)));
903
perror("getplugin");
904
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
1089
905
if(ret < 0){
1090
error(0, errno, "sigprocmask");
906
perror("sigprocmask");
1091
907
}
1092
exitstatus = EX_OSERR;
908
exitstatus = EXIT_FAILURE;
1093
909
goto fallback;
1094
910
}
1095
911
1098
914
1099
915
/* Unblock SIGCHLD so signal handler can be run if this process
1100
916
has already completed */
1101
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1102
&sigchld_action.sa_mask,
1103
NULL));
917
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
1104
918
if(ret < 0){
1105
error(0, errno, "sigprocmask");
1106
exitstatus = EX_OSERR;
919
perror("sigprocmask");
920
exitstatus = EXIT_FAILURE;
1107
921
goto fallback;
1108
922
}
1109
923
1110
#if defined (__GNUC__) and defined (__GLIBC__)
1111
#if not __GLIBC_PREREQ(2, 16)
1112
#pragma GCC diagnostic push
1113
#pragma GCC diagnostic ignored "-Wsign-conversion"
1114
#endif
1115
#endif
1116
FD_SET(new_plugin->fd, &rfds_all); /* Spurious warning from
1117
-Wconversion in GNU libc
1118
before 2.16 */
1119
#if defined (__GNUC__) and defined (__GLIBC__)
1120
#if not __GLIBC_PREREQ(2, 16)
1121
#pragma GCC diagnostic pop
1122
#endif
1123
#endif
924
FD_SET(new_plugin->fd, &rfds_all);
1124
925
1125
926
if(maxfd < new_plugin->fd){
1126
927
maxfd = new_plugin->fd;
1127
928
}
1128
929
}
1129
930
1130
TEMP_FAILURE_RETRY(closedir(dir));
931
closedir(dir);
1131
932
dir = NULL;
1132
933
free_plugin(getplugin(NULL));
1133
934
1146
947
while(plugin_list){
1147
948
fd_set rfds = rfds_all;
1148
949
int select_ret = select(maxfd+1, &rfds, NULL, NULL, NULL);
1149
if(select_ret == -1 and errno != EINTR){
1150
error(0, errno, "select");
1151
exitstatus = EX_OSERR;
950
if(select_ret == -1){
951
perror("select");
952
exitstatus = EXIT_FAILURE;
1152
953
goto fallback;
1153
954
}
1154
955
/* OK, now either a process completed, or something can be read
1160
961
if(not WIFEXITED(proc->status)
1161
962
or WEXITSTATUS(proc->status) != 0){
1162
963
/* Bad exit by plugin */
1163
964
1164
965
if(debug){
1165
966
if(WIFEXITED(proc->status)){
1166
967
fprintf(stderr, "Plugin %s [%" PRIdMAX "] exited with"
1169
970
WEXITSTATUS(proc->status));
1170
971
} else if(WIFSIGNALED(proc->status)){
1171
972
fprintf(stderr, "Plugin %s [%" PRIdMAX "] killed by"
1172
" signal %d: %s\n", proc->name,
973
" signal %d\n", proc->name,
1173
974
(intmax_t) (proc->pid),
1174
WTERMSIG(proc->status),
1175
strsignal(WTERMSIG(proc->status)));
975
WTERMSIG(proc->status));
1176
976
} else if(WCOREDUMP(proc->status)){
1177
977
fprintf(stderr, "Plugin %s [%" PRIdMAX "] dumped"
1178
978
" core\n", proc->name, (intmax_t) (proc->pid));
1180
980
}
1181
981
1182
982
/* Remove the plugin */
1183
#if defined (__GNUC__) and defined (__GLIBC__)
1184
#if not __GLIBC_PREREQ(2, 16)
1185
#pragma GCC diagnostic push
1186
#pragma GCC diagnostic ignored "-Wsign-conversion"
1187
#endif
1188
#endif
1189
FD_CLR(proc->fd, &rfds_all); /* Spurious warning from
1190
-Wconversion in GNU libc
1191
before 2.16 */
1192
#if defined (__GNUC__) and defined (__GLIBC__)
1193
#if not __GLIBC_PREREQ(2, 16)
1194
#pragma GCC diagnostic pop
1195
#endif
1196
#endif
1197
983
FD_CLR(proc->fd, &rfds_all);
984
1198
985
/* Block signal while modifying process_list */
1199
ret = (int)TEMP_FAILURE_RETRY(sigprocmask
1200
(SIG_BLOCK,
1201
&sigchld_action.sa_mask,
1202
NULL));
986
ret = sigprocmask(SIG_BLOCK, &sigchld_action.sa_mask, NULL);
1203
987
if(ret < 0){
1204
error(0, errno, "sigprocmask");
1205
exitstatus = EX_OSERR;
988
perror("sigprocmask");
989
exitstatus = EXIT_FAILURE;
1206
990
goto fallback;
1207
991
}
1208
992
1211
995
proc = next_plugin;
1212
996
1213
997
/* We are done modifying process list, so unblock signal */
1214
ret = (int)(TEMP_FAILURE_RETRY
1215
(sigprocmask(SIG_UNBLOCK,
1216
&sigchld_action.sa_mask, NULL)));
998
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask,
999
NULL);
1217
1000
if(ret < 0){
1218
error(0, errno, "sigprocmask");
1219
exitstatus = EX_OSERR;
1001
perror("sigprocmask");
1002
exitstatus = EXIT_FAILURE;
1220
1003
goto fallback;
1221
1004
}
1222
1005
1232
1015
bool bret = print_out_password(proc->buffer,
1233
1016
proc->buffer_length);
1234
1017
if(not bret){
1235
error(0, errno, "print_out_password");
1236
exitstatus = EX_IOERR;
1018
perror("print_out_password");
1019
exitstatus = EXIT_FAILURE;
1237
1020
}
1238
1021
goto fallback;
1239
1022
}
1240
1023
1241
1024
/* This process has not completed. Does it have any output? */
1242
#if defined (__GNUC__) and defined (__GLIBC__)
1243
#if not __GLIBC_PREREQ(2, 16)
1244
#pragma GCC diagnostic push
1245
#pragma GCC diagnostic ignored "-Wsign-conversion"
1246
#endif
1247
#endif
1248
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){ /* Spurious
1249
warning from
1250
-Wconversion
1251
in GNU libc
1252
before
1253
2.16 */
1254
#if defined (__GNUC__) and defined (__GLIBC__)
1255
#if not __GLIBC_PREREQ(2, 16)
1256
#pragma GCC diagnostic pop
1257
#endif
1258
#endif
1025
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){
1259
1026
/* This process had nothing to say at this time */
1260
1027
proc = proc->next;
1261
1028
continue;
1262
1029
}
1263
1030
/* Before reading, make the process' data buffer large enough */
1264
1031
if(proc->buffer_length + BUFFER_SIZE > proc->buffer_size){
1265
char *new_buffer = realloc(proc->buffer, proc->buffer_size
1266
+ (size_t) BUFFER_SIZE);
1267
if(new_buffer == NULL){
1268
error(0, errno, "malloc");
1269
exitstatus = EX_OSERR;
1032
proc->buffer = realloc(proc->buffer, proc->buffer_size
1033
+ (size_t) BUFFER_SIZE);
1034
if(proc->buffer == NULL){
1035
perror("malloc");
1036
exitstatus = EXIT_FAILURE;
1270
1037
goto fallback;
1271
1038
}
1272
proc->buffer = new_buffer;
1273
1039
proc->buffer_size += BUFFER_SIZE;
1274
1040
}
1275
1041
/* Read from the process */
1276
sret = TEMP_FAILURE_RETRY(read(proc->fd,
1277
proc->buffer
1278
+ proc->buffer_length,
1279
BUFFER_SIZE));
1042
sret = read(proc->fd, proc->buffer + proc->buffer_length,
1043
BUFFER_SIZE);
1280
1044
if(sret < 0){
1281
1045
/* Read error from this process; ignore the error */
1282
1046
proc = proc->next;
1290
1054
}
1291
1055
}
1292
1056
}
1293
1294
1057
1058
1295
1059
fallback:
1296
1060
1297
if(plugin_list == NULL or (exitstatus != EXIT_SUCCESS
1298
and exitstatus != EX_OK)){
1061
if(plugin_list == NULL or exitstatus != EXIT_SUCCESS){
1299
1062
/* Fallback if all plugins failed, none are found or an error
1300
1063
occured */
1301
1064
bool bret;
1309
1072
}
1310
1073
bret = print_out_password(passwordbuffer, len);
1311
1074
if(not bret){
1312
error(0, errno, "print_out_password");
1313
exitstatus = EX_IOERR;
1075
perror("print_out_password");
1076
exitstatus = EXIT_FAILURE;
1314
1077
}
1315
1078
}
1316
1079
1317
1080
/* Restore old signal handler */
1318
1081
ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
1319
1082
if(ret == -1){
1320
error(0, errno, "sigaction");
1321
exitstatus = EX_OSERR;
1083
perror("sigaction");
1084
exitstatus = EXIT_FAILURE;
1322
1085
}
1323
1086
1324
1087
if(custom_argv != NULL){
1339
1102
ret = kill(p->pid, SIGTERM);
1340
1103
if(ret == -1 and errno != ESRCH){
1341
1104
/* Set-uid proccesses might not get closed */
1342
error(0, errno, "kill");
1105
perror("kill");
1343
1106
}
1344
1107
}
1345
1108
}
1346
1109
1347
1110
/* Wait for any remaining child processes to terminate */
1348
do {
1111
do{
1349
1112
ret = wait(NULL);
1350
1113
} while(ret >= 0);
1351
1114
if(errno != ECHILD){
1352
error(0, errno, "wait");
1115
perror("wait");
1353
1116
}
1354
1117
1355
1118
free_plugin_list();
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0