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- Committer: Teddy Hogeborn
- Date: 2009-09-05 01:05:25 UTC
- mto: (24.1.139 mandos) (237.12.2 mandos-persistent) (299.1.1 release) (300.1.1 release) (301.1.1 release)
- mto: This revision was merged to the branch mainline in revision 264.
- Revision ID: teddy@fukt.bsnet.se-20090905010525-7qeq05ztwc2ddhuv
* plugins.d/mandos-client.c (main): Do not handle ignored signals.
Bug fix: remove signal handler
before re-raising signal.
* plugins.d/password-prompt.c (main): Check return values from
"sigaddset()".
Bug fix: remove signal handler
before re-raising signal.
* plugins.d/password-prompt.c (main): Check return values from
"sigaddset()".
- files removed:
- DBUS-API
- debian/source
- debian/upstream
- 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 © 2008-2014 Teddy Hogeborn
6
* Copyright © 2008-2014 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
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(),
32
stderr, STDOUT_FILENO, fclose() */
33
#include <sys/types.h> /* DIR, fdopendir(), fstat(), struct
31
#include <stdio.h> /* perror, fileno(), fprintf(),
32
stderr, STDOUT_FILENO */
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(),
40
40
#include <sys/wait.h> /* wait(), waitpid(), WIFEXITED(),
41
41
WEXITSTATUS(), WTERMSIG(),
42
42
WCOREDUMP() */
43
#include <sys/stat.h> /* struct stat, fstat(), S_ISREG() */
43
#include <sys/stat.h> /* struct stat, stat(), S_ISREG() */
44
44
#include <iso646.h> /* and, or, not */
45
#include <dirent.h> /* DIR, struct dirent, fdopendir(),
45
#include <dirent.h> /* DIR, struct dirent, opendir(),
46
46
readdir(), closedir(), dirfd() */
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
*/
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() */
54
54
#include <fcntl.h> /* fcntl(), F_GETFD, F_SETFD,
55
FD_CLOEXEC, openat() */
56
#include <string.h> /* strsep, strlen(), strsignal(),
57
strcmp(), strncmp() */
55
FD_CLOEXEC */
56
#include <string.h> /* strsep, strlen(), asprintf(),
57
strsignal() */
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() */
76
71
77
72
#define BUFFER_SIZE 256
78
73
80
75
#define AFILE "/conf/conf.d/mandos/plugin-runner.conf"
81
76
82
77
const char *argp_program_version = "plugin-runner " VERSION;
83
const char *argp_program_bug_address = "<mandos@recompile.se>";
78
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
84
79
85
80
typedef struct plugin{
86
81
char *name; /* can be NULL or any plugin name */
106
101
107
102
/* Gets an existing plugin based on name,
108
103
or if none is found, creates a new one */
109
__attribute__((warn_unused_result))
110
104
static plugin *getplugin(char *name){
111
/* Check for existing plugin with that name */
105
/* Check for exiting plugin with that name */
112
106
for(plugin *p = plugin_list; p != NULL; p = p->next){
113
107
if((p->name == name)
114
108
or (p->name and name and (strcmp(p->name, name) == 0))){
116
110
}
117
111
}
118
112
/* Create a new plugin */
119
plugin *new_plugin = NULL;
120
do {
121
new_plugin = malloc(sizeof(plugin));
122
} while(new_plugin == NULL and errno == EINTR);
113
plugin *new_plugin = malloc(sizeof(plugin));
123
114
if(new_plugin == NULL){
124
115
return NULL;
125
116
}
126
117
char *copy_name = NULL;
127
118
if(name != NULL){
128
do {
129
copy_name = strdup(name);
130
} while(copy_name == NULL and errno == EINTR);
119
copy_name = strdup(name);
131
120
if(copy_name == NULL){
132
int e = errno;
133
121
free(new_plugin);
134
errno = e;
135
122
return NULL;
136
123
}
137
124
}
141
128
.disabled = false,
142
129
.next = plugin_list };
143
130
144
do {
145
new_plugin->argv = malloc(sizeof(char *) * 2);
146
} while(new_plugin->argv == NULL and errno == EINTR);
131
new_plugin->argv = malloc(sizeof(char *) * 2);
147
132
if(new_plugin->argv == NULL){
148
int e = errno;
149
133
free(copy_name);
150
134
free(new_plugin);
151
errno = e;
152
135
return NULL;
153
136
}
154
137
new_plugin->argv[0] = copy_name;
155
138
new_plugin->argv[1] = NULL;
156
139
157
do {
158
new_plugin->environ = malloc(sizeof(char *));
159
} while(new_plugin->environ == NULL and errno == EINTR);
140
new_plugin->environ = malloc(sizeof(char *));
160
141
if(new_plugin->environ == NULL){
161
int e = errno;
162
142
free(copy_name);
163
143
free(new_plugin->argv);
164
144
free(new_plugin);
165
errno = e;
166
145
return NULL;
167
146
}
168
147
new_plugin->environ[0] = NULL;
173
152
}
174
153
175
154
/* Helper function for add_argument and add_environment */
176
__attribute__((nonnull, warn_unused_result))
177
155
static bool add_to_char_array(const char *new, char ***array,
178
156
int *len){
179
157
/* Resize the pointed-to array to hold one more pointer */
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);
158
*array = realloc(*array, sizeof(char *)
159
* (size_t) ((*len) + 2));
185
160
/* Malloc check */
186
if(new_array == NULL){
161
if(*array == NULL){
187
162
return false;
188
163
}
189
*array = new_array;
190
164
/* Make a copy of the new string */
191
char *copy;
192
do {
193
copy = strdup(new);
194
} while(copy == NULL and errno == EINTR);
165
char *copy = strdup(new);
195
166
if(copy == NULL){
196
167
return false;
197
168
}
204
175
}
205
176
206
177
/* Add to a plugin's argument vector */
207
__attribute__((nonnull(2), warn_unused_result))
208
178
static bool add_argument(plugin *p, const char *arg){
209
179
if(p == NULL){
210
180
return false;
213
183
}
214
184
215
185
/* Add to a plugin's environment */
216
__attribute__((nonnull(2), warn_unused_result))
217
186
static bool add_environment(plugin *p, const char *def, bool replace){
218
187
if(p == NULL){
219
188
return false;
221
190
/* namelen = length of name of environment variable */
222
191
size_t namelen = (size_t)(strchrnul(def, '=') - def);
223
192
/* Search for this environment variable */
224
for(char **envdef = p->environ; *envdef != NULL; envdef++){
225
if(strncmp(*envdef, def, namelen + 1) == 0){
193
for(char **e = p->environ; *e != NULL; e++){
194
if(strncmp(*e, def, namelen + 1) == 0){
226
195
/* It already exists */
227
196
if(replace){
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){
197
char *new = realloc(*e, strlen(def) + 1);
198
if(new == NULL){
233
199
return false;
234
200
}
235
*envdef = new_envdef;
236
strcpy(*envdef, def);
201
*e = new;
202
strcpy(*e, def);
237
203
}
238
204
return true;
239
205
}
244
210
/*
245
211
* Based on the example in the GNU LibC manual chapter 13.13 "File
246
212
* Descriptor Flags".
247
| [[info:libc:Descriptor%20Flags][File Descriptor Flags]] |
213
* *Note File Descriptor Flags:(libc)Descriptor Flags.
248
214
*/
249
__attribute__((warn_unused_result))
250
215
static int set_cloexec_flag(int fd){
251
int ret = (int)TEMP_FAILURE_RETRY(fcntl(fd, F_GETFD, 0));
216
int ret = fcntl(fd, F_GETFD, 0);
252
217
/* If reading the flags failed, return error indication now. */
253
218
if(ret < 0){
254
219
return ret;
255
220
}
256
221
/* Store modified flag word in the descriptor. */
257
return (int)TEMP_FAILURE_RETRY(fcntl(fd, F_SETFD,
258
ret | FD_CLOEXEC));
222
return fcntl(fd, F_SETFD, ret | FD_CLOEXEC);
259
223
}
260
224
261
225
276
240
/* No child processes */
277
241
break;
278
242
}
279
error(0, errno, "waitpid");
243
perror("waitpid");
280
244
}
281
245
282
246
/* A child exited, find it in process_list */
294
258
}
295
259
296
260
/* Prints out a password to stdout */
297
__attribute__((nonnull, warn_unused_result))
298
261
static bool print_out_password(const char *buffer, size_t length){
299
262
ssize_t ret;
300
263
for(size_t written = 0; written < length; written += (size_t)ret){
308
271
}
309
272
310
273
/* Removes and free a plugin from the plugin list */
311
__attribute__((nonnull))
312
274
static void free_plugin(plugin *plugin_node){
313
275
314
276
for(char **arg = plugin_node->argv; *arg != NULL; arg++){
348
310
char *plugindir = NULL;
349
311
char *argfile = NULL;
350
312
FILE *conffp;
313
size_t d_name_len;
351
314
DIR *dir = NULL;
352
315
struct dirent *dirst;
353
316
struct stat st;
354
317
fd_set rfds_all;
355
318
int ret, maxfd = 0;
356
319
ssize_t sret;
320
intmax_t tmpmax;
357
321
uid_t uid = 65534;
358
322
gid_t gid = 65534;
359
323
bool debug = false;
363
327
.sa_flags = SA_NOCLDSTOP };
364
328
char **custom_argv = NULL;
365
329
int custom_argc = 0;
366
int dir_fd;
367
330
368
331
/* Establish a signal handler */
369
332
sigemptyset(&sigchld_action.sa_mask);
370
333
ret = sigaddset(&sigchld_action.sa_mask, SIGCHLD);
371
334
if(ret == -1){
372
error(0, errno, "sigaddset");
373
exitstatus = EX_OSERR;
335
perror("sigaddset");
336
exitstatus = EXIT_FAILURE;
374
337
goto fallback;
375
338
}
376
339
ret = sigaction(SIGCHLD, &sigchld_action, &old_sigchld_action);
377
340
if(ret == -1){
378
error(0, errno, "sigaction");
379
exitstatus = EX_OSERR;
341
perror("sigaction");
342
exitstatus = EXIT_FAILURE;
380
343
goto fallback;
381
344
}
382
345
414
377
.doc = "Group ID the plugins will run as", .group = 3 },
415
378
{ .name = "debug", .key = 132,
416
379
.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 },
426
380
{ .name = NULL }
427
381
};
428
382
429
__attribute__((nonnull(3)))
430
error_t parse_opt(int key, char *arg, struct argp_state *state){
431
errno = 0;
383
error_t parse_opt(int key, char *arg, __attribute__((unused))
384
struct argp_state *state){
385
char *tmp;
432
386
switch(key){
433
char *tmp;
434
intmax_t tmp_id;
435
387
case 'g': /* --global-options */
436
{
388
if(arg != NULL){
437
389
char *plugin_option;
438
390
while((plugin_option = strsep(&arg, ",")) != NULL){
391
if(plugin_option[0] == '\0'){
392
continue;
393
}
439
394
if(not add_argument(getplugin(NULL), plugin_option)){
440
break;
395
perror("add_argument");
396
return ARGP_ERR_UNKNOWN;
441
397
}
442
398
}
443
errno = 0;
444
399
}
445
400
break;
446
401
case 'G': /* --global-env */
447
if(add_environment(getplugin(NULL), arg, true)){
448
errno = 0;
402
if(arg == NULL){
403
break;
404
}
405
if(not add_environment(getplugin(NULL), arg, true)){
406
perror("add_environment");
449
407
}
450
408
break;
451
409
case 'o': /* --options-for */
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;
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;
470
420
}
471
421
}
472
errno = 0;
473
422
}
474
423
break;
475
424
case 'E': /* --env-for */
425
if(arg == NULL){
426
break;
427
}
476
428
{
477
429
char *envdef = strchr(arg, ':');
478
430
if(envdef == NULL){
479
argp_error(state, "No colon in \"%s\"", arg);
480
errno = EINVAL;
481
431
break;
482
432
}
483
433
*envdef = '\0';
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;
434
if(not add_environment(getplugin(arg), envdef+1, true)){
435
perror("add_environment");
492
436
}
493
437
}
494
438
break;
495
439
case 'd': /* --disable */
496
{
440
if(arg != NULL){
497
441
plugin *p = getplugin(arg);
498
if(p != NULL){
499
p->disabled = true;
500
errno = 0;
442
if(p == NULL){
443
return ARGP_ERR_UNKNOWN;
501
444
}
445
p->disabled = true;
502
446
}
503
447
break;
504
448
case 'e': /* --enable */
505
{
449
if(arg != NULL){
506
450
plugin *p = getplugin(arg);
507
if(p != NULL){
508
p->disabled = false;
509
errno = 0;
451
if(p == NULL){
452
return ARGP_ERR_UNKNOWN;
510
453
}
454
p->disabled = false;
511
455
}
512
456
break;
513
457
case 128: /* --plugin-dir */
514
458
free(plugindir);
515
459
plugindir = strdup(arg);
516
if(plugindir != NULL){
517
errno = 0;
460
if(plugindir == NULL){
461
perror("strdup");
518
462
}
519
463
break;
520
464
case 129: /* --config-file */
521
465
/* This is already done by parse_opt_config_file() */
522
466
break;
523
467
case 130: /* --userid */
524
tmp_id = strtoimax(arg, &tmp, 10);
468
errno = 0;
469
tmpmax = strtoimax(arg, &tmp, 10);
525
470
if(errno != 0 or tmp == arg or *tmp != '\0'
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;
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;
530
476
}
531
uid = (uid_t)tmp_id;
532
errno = 0;
533
477
break;
534
478
case 131: /* --groupid */
535
tmp_id = strtoimax(arg, &tmp, 10);
479
errno = 0;
480
tmpmax = strtoimax(arg, &tmp, 10);
536
481
if(errno != 0 or tmp == arg or *tmp != '\0'
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;
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;
541
487
}
542
gid = (gid_t)tmp_id;
543
errno = 0;
544
488
break;
545
489
case 132: /* --debug */
546
490
debug = true;
547
491
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;
562
492
/*
563
493
* When adding more options before this line, remember to also add a
564
494
* "case" to the "parse_opt_config_file" function below.
567
497
/* Cryptsetup always passes an argument, which is an empty
568
498
string if "none" was specified in /etc/crypttab. So if
569
499
argument was empty, we ignore it silently. */
570
if(arg[0] == '\0'){
571
break;
500
if(arg[0] != '\0'){
501
fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
572
502
}
503
break;
504
case ARGP_KEY_END:
505
break;
573
506
default:
574
507
return ARGP_ERR_UNKNOWN;
575
508
}
576
return errno; /* Set to 0 at start */
509
return 0;
577
510
}
578
511
579
512
/* This option parser is the same as parse_opt() above, except it
581
514
error_t parse_opt_config_file(int key, char *arg,
582
515
__attribute__((unused))
583
516
struct argp_state *state){
584
errno = 0;
585
517
switch(key){
586
518
case 'g': /* --global-options */
587
519
case 'G': /* --global-env */
594
526
case 129: /* --config-file */
595
527
free(argfile);
596
528
argfile = strdup(arg);
597
if(argfile != NULL){
598
errno = 0;
529
if(argfile == NULL){
530
perror("strdup");
599
531
}
600
532
break;
601
533
case 130: /* --userid */
602
534
case 131: /* --groupid */
603
535
case 132: /* --debug */
604
case '?': /* --help */
605
case -3: /* --usage */
606
case 'V': /* --version */
607
536
case ARGP_KEY_ARG:
537
case ARGP_KEY_END:
608
538
break;
609
539
default:
610
540
return ARGP_ERR_UNKNOWN;
611
541
}
612
return errno;
542
return 0;
613
543
}
614
544
615
545
struct argp argp = { .options = options,
619
549
620
550
/* Parse using parse_opt_config_file() in order to get the custom
621
551
config file location, if any. */
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;
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;
636
556
goto fallback;
637
557
}
638
558
655
575
custom_argc = 1;
656
576
custom_argv = malloc(sizeof(char*) * 2);
657
577
if(custom_argv == NULL){
658
error(0, errno, "malloc");
659
exitstatus = EX_OSERR;
578
perror("malloc");
579
exitstatus = EXIT_FAILURE;
660
580
goto fallback;
661
581
}
662
582
custom_argv[0] = argv[0];
678
598
}
679
599
new_arg = strdup(p);
680
600
if(new_arg == NULL){
681
error(0, errno, "strdup");
682
exitstatus = EX_OSERR;
601
perror("strdup");
602
exitstatus = EXIT_FAILURE;
683
603
free(org_line);
684
604
goto fallback;
685
605
}
686
606
687
607
custom_argc += 1;
688
{
689
char **new_argv = realloc(custom_argv, sizeof(char *)
690
* ((unsigned int)
691
custom_argc + 1));
692
if(new_argv == NULL){
693
error(0, errno, "realloc");
694
exitstatus = EX_OSERR;
695
free(new_arg);
696
free(org_line);
697
goto fallback;
698
} else {
699
custom_argv = new_argv;
700
}
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;
701
615
}
702
616
custom_argv[custom_argc-1] = new_arg;
703
617
custom_argv[custom_argc] = NULL;
704
618
}
705
619
}
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
}
714
620
free(org_line);
715
621
} else {
716
622
/* Check for harmful errors and go to fallback. Other errors might
717
623
not affect opening plugins */
718
624
if(errno == EMFILE or errno == ENFILE or errno == ENOMEM){
719
error(0, errno, "fopen");
720
exitstatus = EX_OSERR;
625
perror("fopen");
626
exitstatus = EXIT_FAILURE;
721
627
goto fallback;
722
628
}
723
629
}
724
/* If there were any arguments from the configuration file, pass
725
them to parser as command line arguments */
630
/* If there was any arguments from configuration file,
631
pass them to parser as command arguments */
726
632
if(custom_argv != NULL){
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;
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;
741
638
goto fallback;
742
639
}
743
640
}
744
641
745
642
/* Parse actual command line arguments, to let them override the
746
643
config file */
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;
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;
761
648
goto fallback;
762
649
}
763
650
775
662
}
776
663
}
777
664
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);
665
/* Strip permissions down to nobody */
666
setgid(gid);
804
667
if(ret == -1){
805
error(0, errno, "setgid");
668
perror("setgid");
806
669
}
807
670
ret = setuid(uid);
808
671
if(ret == -1){
809
error(0, errno, "setuid");
810
}
811
812
/* Open plugin directory with close_on_exec flag */
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 */
813
688
{
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;
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
}
844
697
}
845
698
}
846
699
848
701
849
702
/* Read and execute any executable in the plugin directory*/
850
703
while(true){
851
do {
852
dirst = readdir(dir);
853
} while(dirst == NULL and errno == EINTR);
704
dirst = readdir(dir);
854
705
855
706
/* All directory entries have been processed */
856
707
if(dirst == NULL){
857
708
if(errno == EBADF){
858
error(0, errno, "readdir");
859
exitstatus = EX_IOERR;
709
perror("readdir");
710
exitstatus = EXIT_FAILURE;
860
711
goto fallback;
861
712
}
862
713
break;
863
714
}
864
715
716
d_name_len = strlen(dirst->d_name);
717
865
718
/* Ignore dotfiles, backup files and other junk */
866
719
{
867
720
bool bad_name = false;
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
}
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
891
757
if(bad_name){
892
758
continue;
893
759
}
894
760
}
895
761
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;
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);
906
767
}
907
#ifndef O_CLOEXEC
908
/* Set the FD_CLOEXEC flag on the plugin FD */
909
ret = set_cloexec_flag(plugin_fd);
910
768
if(ret < 0){
911
error(0, errno, "set_cloexec_flag");
912
TEMP_FAILURE_RETRY(close(plugin_fd));
769
perror("asprintf");
913
770
continue;
914
771
}
915
#endif /* O_CLOEXEC */
916
ret = (int)TEMP_FAILURE_RETRY(fstat(plugin_fd, &st));
772
773
ret = stat(filename, &st);
917
774
if(ret == -1){
918
error(0, errno, "stat");
919
TEMP_FAILURE_RETRY(close(plugin_fd));
775
perror("stat");
776
free(filename);
920
777
continue;
921
778
}
922
779
923
780
/* Ignore non-executable files */
924
if(not S_ISREG(st.st_mode)
925
or (TEMP_FAILURE_RETRY(faccessat(dir_fd, dirst->d_name, X_OK,
926
0)) != 0)){
781
if(not S_ISREG(st.st_mode) or (access(filename, X_OK) != 0)){
927
782
if(debug){
928
fprintf(stderr, "Ignoring plugin dir entry \"%s/%s\""
929
" with bad type or mode\n",
930
plugindir != NULL ? plugindir : PDIR, dirst->d_name);
783
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
784
" with bad type or mode\n", filename);
931
785
}
932
TEMP_FAILURE_RETRY(close(plugin_fd));
786
free(filename);
933
787
continue;
934
788
}
935
789
936
790
plugin *p = getplugin(dirst->d_name);
937
791
if(p == NULL){
938
error(0, errno, "getplugin");
939
TEMP_FAILURE_RETRY(close(plugin_fd));
792
perror("getplugin");
793
free(filename);
940
794
continue;
941
795
}
942
796
if(p->disabled){
944
798
fprintf(stderr, "Ignoring disabled plugin \"%s\"\n",
945
799
dirst->d_name);
946
800
}
947
TEMP_FAILURE_RETRY(close(plugin_fd));
801
free(filename);
948
802
continue;
949
803
}
950
804
{
953
807
if(g != NULL){
954
808
for(char **a = g->argv + 1; *a != NULL; a++){
955
809
if(not add_argument(p, *a)){
956
error(0, errno, "add_argument");
810
perror("add_argument");
957
811
}
958
812
}
959
813
/* Add global environment variables */
960
814
for(char **e = g->environ; *e != NULL; e++){
961
815
if(not add_environment(p, *e, false)){
962
error(0, errno, "add_environment");
816
perror("add_environment");
963
817
}
964
818
}
965
819
}
966
820
}
967
/* If this plugin has any environment variables, we need to
968
duplicate the environment from this process, too. */
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. */
969
824
if(p->environ[0] != NULL){
970
825
for(char **e = environ; *e != NULL; e++){
971
826
if(not add_environment(p, *e, false)){
972
error(0, errno, "add_environment");
827
perror("add_environment");
973
828
}
974
829
}
975
830
}
976
831
977
832
int pipefd[2];
978
ret = (int)TEMP_FAILURE_RETRY(pipe(pipefd));
833
ret = pipe(pipefd);
979
834
if(ret == -1){
980
error(0, errno, "pipe");
981
exitstatus = EX_OSERR;
835
perror("pipe");
836
exitstatus = EXIT_FAILURE;
982
837
goto fallback;
983
838
}
984
839
/* Ask OS to automatic close the pipe on exec */
985
840
ret = set_cloexec_flag(pipefd[0]);
986
841
if(ret < 0){
987
error(0, errno, "set_cloexec_flag");
988
exitstatus = EX_OSERR;
842
perror("set_cloexec_flag");
843
exitstatus = EXIT_FAILURE;
989
844
goto fallback;
990
845
}
991
846
ret = set_cloexec_flag(pipefd[1]);
992
847
if(ret < 0){
993
error(0, errno, "set_cloexec_flag");
994
exitstatus = EX_OSERR;
848
perror("set_cloexec_flag");
849
exitstatus = EXIT_FAILURE;
995
850
goto fallback;
996
851
}
997
852
/* Block SIGCHLD until process is safely in process list */
998
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_BLOCK,
999
&sigchld_action.sa_mask,
1000
NULL));
853
ret = sigprocmask(SIG_BLOCK, &sigchld_action.sa_mask, NULL);
1001
854
if(ret < 0){
1002
error(0, errno, "sigprocmask");
1003
exitstatus = EX_OSERR;
855
perror("sigprocmask");
856
exitstatus = EXIT_FAILURE;
1004
857
goto fallback;
1005
858
}
1006
859
/* Starting a new process to be watched */
1007
pid_t pid;
1008
do {
1009
pid = fork();
1010
} while(pid == -1 and errno == EINTR);
860
pid_t pid = fork();
1011
861
if(pid == -1){
1012
error(0, errno, "fork");
1013
exitstatus = EX_OSERR;
862
perror("fork");
863
exitstatus = EXIT_FAILURE;
1014
864
goto fallback;
1015
865
}
1016
866
if(pid == 0){
1017
867
/* this is the child process */
1018
868
ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
1019
869
if(ret < 0){
1020
error(0, errno, "sigaction");
1021
_exit(EX_OSERR);
870
perror("sigaction");
871
_exit(EXIT_FAILURE);
1022
872
}
1023
873
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
1024
874
if(ret < 0){
1025
error(0, errno, "sigprocmask");
1026
_exit(EX_OSERR);
875
perror("sigprocmask");
876
_exit(EXIT_FAILURE);
1027
877
}
1028
878
1029
879
ret = dup2(pipefd[1], STDOUT_FILENO); /* replace our stdout */
1030
880
if(ret == -1){
1031
error(0, errno, "dup2");
1032
_exit(EX_OSERR);
881
perror("dup2");
882
_exit(EXIT_FAILURE);
1033
883
}
1034
884
1035
885
if(dirfd(dir) < 0){
1037
887
above and must now close it manually here. */
1038
888
closedir(dir);
1039
889
}
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);
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
}
1045
900
}
1046
901
/* no return */
1047
902
}
1048
903
/* Parent process */
1049
TEMP_FAILURE_RETRY(close(pipefd[1])); /* Close unused write end of
1050
pipe */
1051
TEMP_FAILURE_RETRY(close(plugin_fd));
904
close(pipefd[1]); /* Close unused write end of pipe */
905
free(filename);
1052
906
plugin *new_plugin = getplugin(dirst->d_name);
1053
907
if(new_plugin == NULL){
1054
error(0, errno, "getplugin");
1055
ret = (int)(TEMP_FAILURE_RETRY
1056
(sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask,
1057
NULL)));
908
perror("getplugin");
909
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
1058
910
if(ret < 0){
1059
error(0, errno, "sigprocmask");
911
perror("sigprocmask");
1060
912
}
1061
exitstatus = EX_OSERR;
913
exitstatus = EXIT_FAILURE;
1062
914
goto fallback;
1063
915
}
1064
916
1067
919
1068
920
/* Unblock SIGCHLD so signal handler can be run if this process
1069
921
has already completed */
1070
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1071
&sigchld_action.sa_mask,
1072
NULL));
922
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
1073
923
if(ret < 0){
1074
error(0, errno, "sigprocmask");
1075
exitstatus = EX_OSERR;
924
perror("sigprocmask");
925
exitstatus = EXIT_FAILURE;
1076
926
goto fallback;
1077
927
}
1078
928
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
929
FD_SET(new_plugin->fd, &rfds_all);
1093
930
1094
931
if(maxfd < new_plugin->fd){
1095
932
maxfd = new_plugin->fd;
1096
933
}
1097
934
}
1098
935
1099
TEMP_FAILURE_RETRY(closedir(dir));
936
closedir(dir);
1100
937
dir = NULL;
1101
938
free_plugin(getplugin(NULL));
1102
939
1115
952
while(plugin_list){
1116
953
fd_set rfds = rfds_all;
1117
954
int select_ret = select(maxfd+1, &rfds, NULL, NULL, NULL);
1118
if(select_ret == -1 and errno != EINTR){
1119
error(0, errno, "select");
1120
exitstatus = EX_OSERR;
955
if(select_ret == -1){
956
perror("select");
957
exitstatus = EXIT_FAILURE;
1121
958
goto fallback;
1122
959
}
1123
960
/* OK, now either a process completed, or something can be read
1149
986
}
1150
987
1151
988
/* Remove the plugin */
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
989
FD_CLR(proc->fd, &rfds_all);
1166
990
1167
991
/* Block signal while modifying process_list */
1168
ret = (int)TEMP_FAILURE_RETRY(sigprocmask
1169
(SIG_BLOCK,
1170
&sigchld_action.sa_mask,
1171
NULL));
992
ret = sigprocmask(SIG_BLOCK, &sigchld_action.sa_mask, NULL);
1172
993
if(ret < 0){
1173
error(0, errno, "sigprocmask");
1174
exitstatus = EX_OSERR;
994
perror("sigprocmask");
995
exitstatus = EXIT_FAILURE;
1175
996
goto fallback;
1176
997
}
1177
998
1180
1001
proc = next_plugin;
1181
1002
1182
1003
/* We are done modifying process list, so unblock signal */
1183
ret = (int)(TEMP_FAILURE_RETRY
1184
(sigprocmask(SIG_UNBLOCK,
1185
&sigchld_action.sa_mask, NULL)));
1004
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask,
1005
NULL);
1186
1006
if(ret < 0){
1187
error(0, errno, "sigprocmask");
1188
exitstatus = EX_OSERR;
1007
perror("sigprocmask");
1008
exitstatus = EXIT_FAILURE;
1189
1009
goto fallback;
1190
1010
}
1191
1011
1201
1021
bool bret = print_out_password(proc->buffer,
1202
1022
proc->buffer_length);
1203
1023
if(not bret){
1204
error(0, errno, "print_out_password");
1205
exitstatus = EX_IOERR;
1024
perror("print_out_password");
1025
exitstatus = EXIT_FAILURE;
1206
1026
}
1207
1027
goto fallback;
1208
1028
}
1209
1029
1210
1030
/* This process has not completed. Does it have any output? */
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
1031
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){
1228
1032
/* This process had nothing to say at this time */
1229
1033
proc = proc->next;
1230
1034
continue;
1231
1035
}
1232
1036
/* Before reading, make the process' data buffer large enough */
1233
1037
if(proc->buffer_length + BUFFER_SIZE > proc->buffer_size){
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;
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;
1239
1043
goto fallback;
1240
1044
}
1241
proc->buffer = new_buffer;
1242
1045
proc->buffer_size += BUFFER_SIZE;
1243
1046
}
1244
1047
/* Read from the process */
1245
sret = TEMP_FAILURE_RETRY(read(proc->fd,
1246
proc->buffer
1247
+ proc->buffer_length,
1248
BUFFER_SIZE));
1048
sret = read(proc->fd, proc->buffer + proc->buffer_length,
1049
BUFFER_SIZE);
1249
1050
if(sret < 0){
1250
1051
/* Read error from this process; ignore the error */
1251
1052
proc = proc->next;
1263
1064
1264
1065
fallback:
1265
1066
1266
if(plugin_list == NULL or (exitstatus != EXIT_SUCCESS
1267
and exitstatus != EX_OK)){
1067
if(plugin_list == NULL or exitstatus != EXIT_SUCCESS){
1268
1068
/* Fallback if all plugins failed, none are found or an error
1269
1069
occured */
1270
1070
bool bret;
1278
1078
}
1279
1079
bret = print_out_password(passwordbuffer, len);
1280
1080
if(not bret){
1281
error(0, errno, "print_out_password");
1282
exitstatus = EX_IOERR;
1081
perror("print_out_password");
1082
exitstatus = EXIT_FAILURE;
1283
1083
}
1284
1084
}
1285
1085
1286
1086
/* Restore old signal handler */
1287
1087
ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
1288
1088
if(ret == -1){
1289
error(0, errno, "sigaction");
1290
exitstatus = EX_OSERR;
1089
perror("sigaction");
1090
exitstatus = EXIT_FAILURE;
1291
1091
}
1292
1092
1293
1093
if(custom_argv != NULL){
1308
1108
ret = kill(p->pid, SIGTERM);
1309
1109
if(ret == -1 and errno != ESRCH){
1310
1110
/* Set-uid proccesses might not get closed */
1311
error(0, errno, "kill");
1111
perror("kill");
1312
1112
}
1313
1113
}
1314
1114
}
1315
1115
1316
1116
/* Wait for any remaining child processes to terminate */
1317
do {
1117
do{
1318
1118
ret = wait(NULL);
1319
1119
} while(ret >= 0);
1320
1120
if(errno != ECHILD){
1321
error(0, errno, "wait");
1121
perror("wait");
1322
1122
}
1323
1123
1324
1124
free_plugin_list();
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0