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- Committer: Teddy Hogeborn
- Date: 2009-09-06 05:37:34 UTC
- Revision ID: teddy@fukt.bsnet.se-20090906053734-uf180lq30ivv4nfy
* plugin-runner.c (getplugin, add_environment, main): Handle EINTR
properly.
* plugins.d/mandos-client.c (start_mandos_communication): Bug fix:
move out "decrypted_buffer_size" to where it is needed.
* plugins.d/splashy.c (termination_handler): Save signal received.
(main): Check return value from "sigaddset()".
properly.
* plugins.d/mandos-client.c (start_mandos_communication): Bug fix:
move out "decrypted_buffer_size" to where it is needed.
* plugins.d/splashy.c (termination_handler): Save signal received.
(main): Check return value from "sigaddset()".
- files removed:
- DBUS-API
- debian/source
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
plugin-runner.c
2
2
/*
3
3
* Mandos plugin runner - Run Mandos plugins
4
4
*
5
* Copyright © 2008-2016 Teddy Hogeborn
6
* Copyright © 2008-2016 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, pipe2() */
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> /* fstat(), struct stat, waitpid(),
34
WIFEXITED(), WEXITSTATUS(), wait(),
35
pid_t, uid_t, gid_t, getuid(),
36
getgid() */
31
#include <stdio.h> /* perror, fileno(), fprintf(),
32
stderr, STDOUT_FILENO */
33
#include <sys/types.h> /* DIR, opendir(), stat(), struct
34
stat, waitpid(), WIFEXITED(),
35
WEXITSTATUS(), wait(), pid_t,
36
uid_t, gid_t, getuid(), getgid(),
37
dirfd() */
37
38
#include <sys/select.h> /* fd_set, select(), FD_ZERO(),
38
39
FD_SET(), FD_ISSET(), FD_CLR */
39
40
#include <sys/wait.h> /* wait(), waitpid(), WIFEXITED(),
40
WEXITSTATUS(), WTERMSIG() */
41
#include <sys/stat.h> /* struct stat, fstat(), S_ISREG() */
41
WEXITSTATUS(), WTERMSIG(),
42
WCOREDUMP() */
43
#include <sys/stat.h> /* struct stat, stat(), S_ISREG() */
42
44
#include <iso646.h> /* and, or, not */
43
#include <dirent.h> /* struct dirent, scandirat() */
44
#include <unistd.h> /* fcntl(), F_GETFD, F_SETFD,
45
FD_CLOEXEC, write(), STDOUT_FILENO,
46
struct stat, fstat(), close(),
47
setgid(), setuid(), S_ISREG(),
48
faccessat() pipe2(), fork(),
49
_exit(), dup2(), fexecve(), read()
50
*/
45
#include <dirent.h> /* DIR, struct dirent, opendir(),
46
readdir(), closedir(), dirfd() */
47
#include <unistd.h> /* struct stat, stat(), S_ISREG(),
48
fcntl(), setuid(), setgid(),
49
F_GETFD, F_SETFD, FD_CLOEXEC,
50
access(), pipe(), fork(), close()
51
dup2(), STDOUT_FILENO, _exit(),
52
execv(), write(), read(),
53
close() */
51
54
#include <fcntl.h> /* fcntl(), F_GETFD, F_SETFD,
52
FD_CLOEXEC, openat(), scandirat(),
53
pipe2() */
54
#include <string.h> /* strsep, strlen(), strsignal(),
55
strcmp(), strncmp() */
55
FD_CLOEXEC */
56
#include <string.h> /* strsep, strlen(), asprintf(),
57
strsignal() */
56
58
#include <errno.h> /* errno */
57
59
#include <argp.h> /* struct argp_option, struct
58
60
argp_state, struct argp,
66
68
*/
67
69
#include <errno.h> /* errno, EBADF */
68
70
#include <inttypes.h> /* intmax_t, PRIdMAX, strtoimax() */
69
#include <sysexits.h> /* EX_OSERR, EX_USAGE, EX_IOERR,
70
EX_CONFIG, EX_UNAVAILABLE, EX_OK */
71
#include <errno.h> /* errno */
72
#include <error.h> /* error() */
73
#include <fnmatch.h> /* fnmatch() */
74
71
75
72
#define BUFFER_SIZE 256
76
73
77
74
#define PDIR "/lib/mandos/plugins.d"
78
#define PHDIR "/lib/mandos/plugin-helpers"
79
75
#define AFILE "/conf/conf.d/mandos/plugin-runner.conf"
80
76
81
77
const char *argp_program_version = "plugin-runner " VERSION;
82
const char *argp_program_bug_address = "<mandos@recompile.se>";
78
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
83
79
84
80
typedef struct plugin{
85
81
char *name; /* can be NULL or any plugin name */
105
101
106
102
/* Gets an existing plugin based on name,
107
103
or if none is found, creates a new one */
108
__attribute__((warn_unused_result))
109
104
static plugin *getplugin(char *name){
110
/* Check for existing plugin with that name */
105
/* Check for exiting plugin with that name */
111
106
for(plugin *p = plugin_list; p != NULL; p = p->next){
112
107
if((p->name == name)
113
108
or (p->name and name and (strcmp(p->name, name) == 0))){
116
111
}
117
112
/* Create a new plugin */
118
113
plugin *new_plugin = NULL;
119
do {
114
do{
120
115
new_plugin = malloc(sizeof(plugin));
121
} while(new_plugin == NULL and errno == EINTR);
116
}while(new_plugin == NULL and errno == EINTR);
122
117
if(new_plugin == NULL){
123
118
return NULL;
124
119
}
125
120
char *copy_name = NULL;
126
121
if(name != NULL){
127
do {
122
do{
128
123
copy_name = strdup(name);
129
} while(copy_name == NULL and errno == EINTR);
124
}while(copy_name == NULL and errno == EINTR);
130
125
if(copy_name == NULL){
131
int e = errno;
132
126
free(new_plugin);
133
errno = e;
134
127
return NULL;
135
128
}
136
129
}
140
133
.disabled = false,
141
134
.next = plugin_list };
142
135
143
do {
136
do{
144
137
new_plugin->argv = malloc(sizeof(char *) * 2);
145
} while(new_plugin->argv == NULL and errno == EINTR);
138
}while(new_plugin->argv == NULL and errno == EINTR);
146
139
if(new_plugin->argv == NULL){
147
int e = errno;
148
140
free(copy_name);
149
141
free(new_plugin);
150
errno = e;
151
142
return NULL;
152
143
}
153
144
new_plugin->argv[0] = copy_name;
154
145
new_plugin->argv[1] = NULL;
155
146
156
do {
147
do{
157
148
new_plugin->environ = malloc(sizeof(char *));
158
} while(new_plugin->environ == NULL and errno == EINTR);
149
}while(new_plugin->environ == NULL and errno == EINTR);
159
150
if(new_plugin->environ == NULL){
160
int e = errno;
161
151
free(copy_name);
162
152
free(new_plugin->argv);
163
153
free(new_plugin);
164
errno = e;
165
154
return NULL;
166
155
}
167
156
new_plugin->environ[0] = NULL;
172
161
}
173
162
174
163
/* Helper function for add_argument and add_environment */
175
__attribute__((nonnull, warn_unused_result))
176
164
static bool add_to_char_array(const char *new, char ***array,
177
165
int *len){
178
166
/* 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);
167
do{
168
*array = realloc(*array, sizeof(char *)
169
* (size_t) ((*len) + 2));
170
}while(*array == NULL and errno == EINTR);
184
171
/* Malloc check */
185
if(new_array == NULL){
172
if(*array == NULL){
186
173
return false;
187
174
}
188
*array = new_array;
189
175
/* Make a copy of the new string */
190
176
char *copy;
191
do {
177
do{
192
178
copy = strdup(new);
193
} while(copy == NULL and errno == EINTR);
179
}while(copy == NULL and errno == EINTR);
194
180
if(copy == NULL){
195
181
return false;
196
182
}
203
189
}
204
190
205
191
/* Add to a plugin's argument vector */
206
__attribute__((nonnull(2), warn_unused_result))
207
192
static bool add_argument(plugin *p, const char *arg){
208
193
if(p == NULL){
209
194
return false;
212
197
}
213
198
214
199
/* Add to a plugin's environment */
215
__attribute__((nonnull(2), warn_unused_result))
216
200
static bool add_environment(plugin *p, const char *def, bool replace){
217
201
if(p == NULL){
218
202
return false;
220
204
/* namelen = length of name of environment variable */
221
205
size_t namelen = (size_t)(strchrnul(def, '=') - def);
222
206
/* Search for this environment variable */
223
for(char **envdef = p->environ; *envdef != NULL; envdef++){
224
if(strncmp(*envdef, def, namelen + 1) == 0){
207
for(char **e = p->environ; *e != NULL; e++){
208
if(strncmp(*e, def, namelen + 1) == 0){
225
209
/* It already exists */
226
210
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){
211
char *new;
212
do{
213
new = realloc(*e, strlen(def) + 1);
214
}while(new == NULL and errno == EINTR);
215
if(new == NULL){
232
216
return false;
233
217
}
234
*envdef = new_envdef;
235
strcpy(*envdef, def);
218
*e = new;
219
strcpy(*e, def);
236
220
}
237
221
return true;
238
222
}
240
224
return add_to_char_array(def, &(p->environ), &(p->envc));
241
225
}
242
226
243
#ifndef O_CLOEXEC
244
227
/*
245
228
* Based on the example in the GNU LibC manual chapter 13.13 "File
246
229
* Descriptor Flags".
247
230
| [[info:libc:Descriptor%20Flags][File Descriptor Flags]] |
248
231
*/
249
__attribute__((warn_unused_result))
250
232
static int set_cloexec_flag(int fd){
251
int ret = (int)TEMP_FAILURE_RETRY(fcntl(fd, F_GETFD, 0));
233
int ret = TEMP_FAILURE_RETRY(fcntl(fd, F_GETFD, 0));
252
234
/* If reading the flags failed, return error indication now. */
253
235
if(ret < 0){
254
236
return ret;
255
237
}
256
238
/* Store modified flag word in the descriptor. */
257
return (int)TEMP_FAILURE_RETRY(fcntl(fd, F_SETFD,
258
ret | FD_CLOEXEC));
239
return TEMP_FAILURE_RETRY(fcntl(fd, F_SETFD, ret | FD_CLOEXEC));
259
240
}
260
#endif /* not O_CLOEXEC */
261
241
262
242
263
243
/* Mark processes as completed when they exit, and save their exit
277
257
/* No child processes */
278
258
break;
279
259
}
280
error(0, errno, "waitpid");
260
perror("waitpid");
281
261
}
282
262
283
263
/* A child exited, find it in process_list */
295
275
}
296
276
297
277
/* Prints out a password to stdout */
298
__attribute__((nonnull, warn_unused_result))
299
278
static bool print_out_password(const char *buffer, size_t length){
300
279
ssize_t ret;
301
280
for(size_t written = 0; written < length; written += (size_t)ret){
309
288
}
310
289
311
290
/* Removes and free a plugin from the plugin list */
312
__attribute__((nonnull))
313
291
static void free_plugin(plugin *plugin_node){
314
292
315
293
for(char **arg = plugin_node->argv; *arg != NULL; arg++){
347
325
348
326
int main(int argc, char *argv[]){
349
327
char *plugindir = NULL;
350
char *pluginhelperdir = NULL;
351
328
char *argfile = NULL;
352
329
FILE *conffp;
353
struct dirent **direntries = NULL;
330
size_t d_name_len;
331
DIR *dir = NULL;
332
struct dirent *dirst;
354
333
struct stat st;
355
334
fd_set rfds_all;
356
335
int ret, maxfd = 0;
364
343
.sa_flags = SA_NOCLDSTOP };
365
344
char **custom_argv = NULL;
366
345
int custom_argc = 0;
367
int dir_fd = -1;
368
346
369
347
/* Establish a signal handler */
370
348
sigemptyset(&sigchld_action.sa_mask);
371
349
ret = sigaddset(&sigchld_action.sa_mask, SIGCHLD);
372
350
if(ret == -1){
373
error(0, errno, "sigaddset");
374
exitstatus = EX_OSERR;
351
perror("sigaddset");
352
exitstatus = EXIT_FAILURE;
375
353
goto fallback;
376
354
}
377
355
ret = sigaction(SIGCHLD, &sigchld_action, &old_sigchld_action);
378
356
if(ret == -1){
379
error(0, errno, "sigaction");
380
exitstatus = EX_OSERR;
357
perror("sigaction");
358
exitstatus = EXIT_FAILURE;
381
359
goto fallback;
382
360
}
383
361
415
393
.doc = "Group ID the plugins will run as", .group = 3 },
416
394
{ .name = "debug", .key = 132,
417
395
.doc = "Debug mode", .group = 4 },
418
{ .name = "plugin-helper-dir", .key = 133,
419
.arg = "DIRECTORY",
420
.doc = "Specify a different plugin helper directory",
421
.group = 2 },
422
/*
423
* These reproduce what we would get without ARGP_NO_HELP
424
*/
425
{ .name = "help", .key = '?',
426
.doc = "Give this help list", .group = -1 },
427
{ .name = "usage", .key = -3,
428
.doc = "Give a short usage message", .group = -1 },
429
{ .name = "version", .key = 'V',
430
.doc = "Print program version", .group = -1 },
431
396
{ .name = NULL }
432
397
};
433
398
434
__attribute__((nonnull(3)))
435
error_t parse_opt(int key, char *arg, struct argp_state *state){
436
errno = 0;
399
error_t parse_opt(int key, char *arg, __attribute__((unused))
400
struct argp_state *state){
437
401
switch(key){
438
402
char *tmp;
439
intmax_t tmp_id;
403
intmax_t tmpmax;
440
404
case 'g': /* --global-options */
441
{
405
if(arg != NULL){
442
406
char *plugin_option;
443
407
while((plugin_option = strsep(&arg, ",")) != NULL){
408
if(plugin_option[0] == '\0'){
409
continue;
410
}
444
411
if(not add_argument(getplugin(NULL), plugin_option)){
445
break;
412
perror("add_argument");
413
return ARGP_ERR_UNKNOWN;
446
414
}
447
415
}
448
errno = 0;
449
416
}
450
417
break;
451
418
case 'G': /* --global-env */
452
if(add_environment(getplugin(NULL), arg, true)){
453
errno = 0;
419
if(arg == NULL){
420
break;
421
}
422
if(not add_environment(getplugin(NULL), arg, true)){
423
perror("add_environment");
454
424
}
455
425
break;
456
426
case 'o': /* --options-for */
457
{
458
char *option_list = strchr(arg, ':');
459
if(option_list == NULL){
460
argp_error(state, "No colon in \"%s\"", arg);
461
errno = EINVAL;
462
break;
463
}
464
*option_list = '\0';
465
option_list++;
466
if(arg[0] == '\0'){
467
argp_error(state, "Empty plugin name");
468
errno = EINVAL;
469
break;
470
}
471
char *option;
472
while((option = strsep(&option_list, ",")) != NULL){
473
if(not add_argument(getplugin(arg), option)){
474
break;
427
if(arg != NULL){
428
char *plugin_name = strsep(&arg, ":");
429
if(plugin_name[0] == '\0'){
430
break;
431
}
432
char *plugin_option;
433
while((plugin_option = strsep(&arg, ",")) != NULL){
434
if(not add_argument(getplugin(plugin_name), plugin_option)){
435
perror("add_argument");
436
return ARGP_ERR_UNKNOWN;
475
437
}
476
438
}
477
errno = 0;
478
439
}
479
440
break;
480
441
case 'E': /* --env-for */
442
if(arg == NULL){
443
break;
444
}
481
445
{
482
446
char *envdef = strchr(arg, ':');
483
447
if(envdef == NULL){
484
argp_error(state, "No colon in \"%s\"", arg);
485
errno = EINVAL;
486
448
break;
487
449
}
488
450
*envdef = '\0';
489
envdef++;
490
if(arg[0] == '\0'){
491
argp_error(state, "Empty plugin name");
492
errno = EINVAL;
493
break;
494
}
495
if(add_environment(getplugin(arg), envdef, true)){
496
errno = 0;
451
if(not add_environment(getplugin(arg), envdef+1, true)){
452
perror("add_environment");
497
453
}
498
454
}
499
455
break;
500
456
case 'd': /* --disable */
501
{
457
if(arg != NULL){
502
458
plugin *p = getplugin(arg);
503
if(p != NULL){
504
p->disabled = true;
505
errno = 0;
459
if(p == NULL){
460
return ARGP_ERR_UNKNOWN;
506
461
}
462
p->disabled = true;
507
463
}
508
464
break;
509
465
case 'e': /* --enable */
510
{
466
if(arg != NULL){
511
467
plugin *p = getplugin(arg);
512
if(p != NULL){
513
p->disabled = false;
514
errno = 0;
468
if(p == NULL){
469
return ARGP_ERR_UNKNOWN;
515
470
}
471
p->disabled = false;
516
472
}
517
473
break;
518
474
case 128: /* --plugin-dir */
519
475
free(plugindir);
520
476
plugindir = strdup(arg);
521
if(plugindir != NULL){
522
errno = 0;
477
if(plugindir == NULL){
478
perror("strdup");
523
479
}
524
480
break;
525
481
case 129: /* --config-file */
526
482
/* This is already done by parse_opt_config_file() */
527
483
break;
528
484
case 130: /* --userid */
529
tmp_id = strtoimax(arg, &tmp, 10);
485
errno = 0;
486
tmpmax = strtoimax(arg, &tmp, 10);
530
487
if(errno != 0 or tmp == arg or *tmp != '\0'
531
or tmp_id != (uid_t)tmp_id){
532
argp_error(state, "Bad user ID number: \"%s\", using %"
533
PRIdMAX, arg, (intmax_t)uid);
534
break;
488
or tmpmax != (uid_t)tmpmax){
489
fprintf(stderr, "Bad user ID number: \"%s\", using %"
490
PRIdMAX "\n", arg, (intmax_t)uid);
491
} else {
492
uid = (uid_t)tmpmax;
535
493
}
536
uid = (uid_t)tmp_id;
537
errno = 0;
538
494
break;
539
495
case 131: /* --groupid */
540
tmp_id = strtoimax(arg, &tmp, 10);
496
errno = 0;
497
tmpmax = strtoimax(arg, &tmp, 10);
541
498
if(errno != 0 or tmp == arg or *tmp != '\0'
542
or tmp_id != (gid_t)tmp_id){
543
argp_error(state, "Bad group ID number: \"%s\", using %"
544
PRIdMAX, arg, (intmax_t)gid);
545
break;
499
or tmpmax != (gid_t)tmpmax){
500
fprintf(stderr, "Bad group ID number: \"%s\", using %"
501
PRIdMAX "\n", arg, (intmax_t)gid);
502
} else {
503
gid = (gid_t)tmpmax;
546
504
}
547
gid = (gid_t)tmp_id;
548
errno = 0;
549
505
break;
550
506
case 132: /* --debug */
551
507
debug = true;
552
508
break;
553
case 133: /* --plugin-helper-dir */
554
free(pluginhelperdir);
555
pluginhelperdir = strdup(arg);
556
if(pluginhelperdir != NULL){
557
errno = 0;
558
}
559
break;
560
/*
561
* These reproduce what we would get without ARGP_NO_HELP
562
*/
563
case '?': /* --help */
564
state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
565
argp_state_help(state, state->out_stream, ARGP_HELP_STD_HELP);
566
case -3: /* --usage */
567
state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
568
argp_state_help(state, state->out_stream,
569
ARGP_HELP_USAGE | ARGP_HELP_EXIT_OK);
570
case 'V': /* --version */
571
fprintf(state->out_stream, "%s\n", argp_program_version);
572
exit(EXIT_SUCCESS);
573
break;
574
509
/*
575
510
* When adding more options before this line, remember to also add a
576
511
* "case" to the "parse_opt_config_file" function below.
579
514
/* Cryptsetup always passes an argument, which is an empty
580
515
string if "none" was specified in /etc/crypttab. So if
581
516
argument was empty, we ignore it silently. */
582
if(arg[0] == '\0'){
583
break;
517
if(arg[0] != '\0'){
518
fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
584
519
}
520
break;
521
case ARGP_KEY_END:
522
break;
585
523
default:
586
524
return ARGP_ERR_UNKNOWN;
587
525
}
588
return errno; /* Set to 0 at start */
526
return 0;
589
527
}
590
528
591
529
/* This option parser is the same as parse_opt() above, except it
593
531
error_t parse_opt_config_file(int key, char *arg,
594
532
__attribute__((unused))
595
533
struct argp_state *state){
596
errno = 0;
597
534
switch(key){
598
535
case 'g': /* --global-options */
599
536
case 'G': /* --global-env */
606
543
case 129: /* --config-file */
607
544
free(argfile);
608
545
argfile = strdup(arg);
609
if(argfile != NULL){
610
errno = 0;
546
if(argfile == NULL){
547
perror("strdup");
611
548
}
612
549
break;
613
550
case 130: /* --userid */
614
551
case 131: /* --groupid */
615
552
case 132: /* --debug */
616
case 133: /* --plugin-helper-dir */
617
case '?': /* --help */
618
case -3: /* --usage */
619
case 'V': /* --version */
620
553
case ARGP_KEY_ARG:
554
case ARGP_KEY_END:
621
555
break;
622
556
default:
623
557
return ARGP_ERR_UNKNOWN;
624
558
}
625
return errno;
559
return 0;
626
560
}
627
561
628
562
struct argp argp = { .options = options,
632
566
633
567
/* Parse using parse_opt_config_file() in order to get the custom
634
568
config file location, if any. */
635
ret = argp_parse(&argp, argc, argv,
636
ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
637
NULL, NULL);
638
switch(ret){
639
case 0:
640
break;
641
case ENOMEM:
642
default:
643
errno = ret;
644
error(0, errno, "argp_parse");
645
exitstatus = EX_OSERR;
646
goto fallback;
647
case EINVAL:
648
exitstatus = EX_USAGE;
569
ret = argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
570
if(ret == ARGP_ERR_UNKNOWN){
571
fprintf(stderr, "Unknown error while parsing arguments\n");
572
exitstatus = EXIT_FAILURE;
649
573
goto fallback;
650
574
}
651
575
668
592
custom_argc = 1;
669
593
custom_argv = malloc(sizeof(char*) * 2);
670
594
if(custom_argv == NULL){
671
error(0, errno, "malloc");
672
exitstatus = EX_OSERR;
595
perror("malloc");
596
exitstatus = EXIT_FAILURE;
673
597
goto fallback;
674
598
}
675
599
custom_argv[0] = argv[0];
691
615
}
692
616
new_arg = strdup(p);
693
617
if(new_arg == NULL){
694
error(0, errno, "strdup");
695
exitstatus = EX_OSERR;
618
perror("strdup");
619
exitstatus = EXIT_FAILURE;
696
620
free(org_line);
697
621
goto fallback;
698
622
}
699
623
700
624
custom_argc += 1;
701
{
702
char **new_argv = realloc(custom_argv, sizeof(char *)
703
* ((size_t)custom_argc + 1));
704
if(new_argv == NULL){
705
error(0, errno, "realloc");
706
exitstatus = EX_OSERR;
707
free(new_arg);
708
free(org_line);
709
goto fallback;
710
} else {
711
custom_argv = new_argv;
712
}
625
custom_argv = realloc(custom_argv, sizeof(char *)
626
* ((unsigned int) custom_argc + 1));
627
if(custom_argv == NULL){
628
perror("realloc");
629
exitstatus = EXIT_FAILURE;
630
free(org_line);
631
goto fallback;
713
632
}
714
633
custom_argv[custom_argc-1] = new_arg;
715
634
custom_argv[custom_argc] = NULL;
716
635
}
717
636
}
718
do {
637
do{
719
638
ret = fclose(conffp);
720
} while(ret == EOF and errno == EINTR);
639
}while(ret == EOF and errno == EINTR);
721
640
if(ret == EOF){
722
error(0, errno, "fclose");
723
exitstatus = EX_IOERR;
641
perror("fclose");
642
exitstatus = EXIT_FAILURE;
724
643
goto fallback;
725
644
}
726
645
free(org_line);
728
647
/* Check for harmful errors and go to fallback. Other errors might
729
648
not affect opening plugins */
730
649
if(errno == EMFILE or errno == ENFILE or errno == ENOMEM){
731
error(0, errno, "fopen");
732
exitstatus = EX_OSERR;
650
perror("fopen");
651
exitstatus = EXIT_FAILURE;
733
652
goto fallback;
734
653
}
735
654
}
736
/* If there were any arguments from the configuration file, pass
737
them to parser as command line arguments */
655
/* If there was any arguments from configuration file,
656
pass them to parser as command arguments */
738
657
if(custom_argv != NULL){
739
ret = argp_parse(&argp, custom_argc, custom_argv,
740
ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
741
NULL, NULL);
742
switch(ret){
743
case 0:
744
break;
745
case ENOMEM:
746
default:
747
errno = ret;
748
error(0, errno, "argp_parse");
749
exitstatus = EX_OSERR;
750
goto fallback;
751
case EINVAL:
752
exitstatus = EX_CONFIG;
658
ret = argp_parse(&argp, custom_argc, custom_argv, ARGP_IN_ORDER,
659
0, NULL);
660
if(ret == ARGP_ERR_UNKNOWN){
661
fprintf(stderr, "Unknown error while parsing arguments\n");
662
exitstatus = EXIT_FAILURE;
753
663
goto fallback;
754
664
}
755
665
}
756
666
757
667
/* Parse actual command line arguments, to let them override the
758
668
config file */
759
ret = argp_parse(&argp, argc, argv,
760
ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
761
NULL, NULL);
762
switch(ret){
763
case 0:
764
break;
765
case ENOMEM:
766
default:
767
errno = ret;
768
error(0, errno, "argp_parse");
769
exitstatus = EX_OSERR;
770
goto fallback;
771
case EINVAL:
772
exitstatus = EX_USAGE;
773
goto fallback;
774
}
775
776
{
777
char *pluginhelperenv;
778
bool bret = true;
779
ret = asprintf(&pluginhelperenv, "MANDOSPLUGINHELPERDIR=%s",
780
pluginhelperdir != NULL ? pluginhelperdir : PHDIR);
781
if(ret != -1){
782
bret = add_environment(getplugin(NULL), pluginhelperenv, true);
783
}
784
if(ret == -1 or not bret){
785
error(0, errno, "Failed to set MANDOSPLUGINHELPERDIR"
786
" environment variable to \"%s\" for all plugins\n",
787
pluginhelperdir != NULL ? pluginhelperdir : PHDIR);
788
}
789
if(ret != -1){
790
free(pluginhelperenv);
791
}
669
ret = argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
670
if(ret == ARGP_ERR_UNKNOWN){
671
fprintf(stderr, "Unknown error while parsing arguments\n");
672
exitstatus = EXIT_FAILURE;
673
goto fallback;
792
674
}
793
675
794
676
if(debug){
805
687
}
806
688
}
807
689
808
if(getuid() == 0){
809
/* Work around Debian bug #633582:
810
<https://bugs.debian.org/633582> */
811
int plugindir_fd = open(/* plugindir or */ PDIR, O_RDONLY);
812
if(plugindir_fd == -1){
813
if(errno != ENOENT){
814
error(0, errno, "open(\"" PDIR "\")");
815
}
816
} else {
817
ret = (int)TEMP_FAILURE_RETRY(fstat(plugindir_fd, &st));
818
if(ret == -1){
819
error(0, errno, "fstat");
820
} else {
821
if(S_ISDIR(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
822
ret = fchown(plugindir_fd, uid, gid);
823
if(ret == -1){
824
error(0, errno, "fchown");
825
}
826
}
827
}
828
close(plugindir_fd);
829
}
830
}
831
832
/* Lower permissions */
833
ret = setgid(gid);
690
/* Strip permissions down to nobody */
691
setgid(gid);
834
692
if(ret == -1){
835
error(0, errno, "setgid");
693
perror("setgid");
836
694
}
837
695
ret = setuid(uid);
838
696
if(ret == -1){
839
error(0, errno, "setuid");
840
}
841
842
/* Open plugin directory with close_on_exec flag */
697
perror("setuid");
698
}
699
700
if(plugindir == NULL){
701
dir = opendir(PDIR);
702
} else {
703
dir = opendir(plugindir);
704
}
705
706
if(dir == NULL){
707
perror("Could not open plugin dir");
708
exitstatus = EXIT_FAILURE;
709
goto fallback;
710
}
711
712
/* Set the FD_CLOEXEC flag on the directory, if possible */
843
713
{
844
dir_fd = open(plugindir != NULL ? plugindir : PDIR, O_RDONLY |
845
#ifdef O_CLOEXEC
846
O_CLOEXEC
847
#else /* not O_CLOEXEC */
848
0
849
#endif /* not O_CLOEXEC */
850
);
851
if(dir_fd == -1){
852
error(0, errno, "Could not open plugin dir");
853
exitstatus = EX_UNAVAILABLE;
854
goto fallback;
855
}
856
857
#ifndef O_CLOEXEC
858
/* Set the FD_CLOEXEC flag on the directory */
859
ret = set_cloexec_flag(dir_fd);
860
if(ret < 0){
861
error(0, errno, "set_cloexec_flag");
862
exitstatus = EX_OSERR;
863
goto fallback;
864
}
865
#endif /* O_CLOEXEC */
866
}
867
868
int good_name(const struct dirent * const dirent){
869
const char * const patterns[] = { ".*", "#*#", "*~", "*.dpkg-new",
870
"*.dpkg-old", "*.dpkg-bak",
871
"*.dpkg-divert", 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, dirent->d_name, FNM_FILE_NAME | FNM_PERIOD)
882
!= FNM_NOMATCH){
883
if(debug){
884
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
885
" matching pattern %s\n", dirent->d_name, *pat);
886
}
887
return 0;
714
int dir_fd = dirfd(dir);
715
if(dir_fd >= 0){
716
ret = set_cloexec_flag(dir_fd);
717
if(ret < 0){
718
perror("set_cloexec_flag");
719
exitstatus = EXIT_FAILURE;
720
goto fallback;
888
721
}
889
722
}
890
return 1;
891
}
892
893
int numplugins = scandirat(dir_fd, ".", &direntries, good_name,
894
alphasort);
895
if(numplugins == -1){
896
error(0, errno, "Could not scan plugin dir");
897
direntries = NULL;
898
exitstatus = EX_OSERR;
899
goto fallback;
900
723
}
901
724
902
725
FD_ZERO(&rfds_all);
903
726
904
727
/* Read and execute any executable in the plugin directory*/
905
for(int i = 0; i < numplugins; i++){
906
907
int plugin_fd = openat(dir_fd, direntries[i]->d_name, O_RDONLY);
908
if(plugin_fd == -1){
909
error(0, errno, "Could not open plugin");
910
free(direntries[i]);
728
while(true){
729
do{
730
dirst = readdir(dir);
731
}while(dirst == NULL and errno == EINTR);
732
733
/* All directory entries have been processed */
734
if(dirst == NULL){
735
if(errno == EBADF){
736
perror("readdir");
737
exitstatus = EXIT_FAILURE;
738
goto fallback;
739
}
740
break;
741
}
742
743
d_name_len = strlen(dirst->d_name);
744
745
/* Ignore dotfiles, backup files and other junk */
746
{
747
bool bad_name = false;
748
749
const char const *bad_prefixes[] = { ".", "#", NULL };
750
751
const char const *bad_suffixes[] = { "~", "#", ".dpkg-new",
752
".dpkg-old",
753
".dpkg-bak",
754
".dpkg-divert", NULL };
755
for(const char **pre = bad_prefixes; *pre != NULL; pre++){
756
size_t pre_len = strlen(*pre);
757
if((d_name_len >= pre_len)
758
and strncmp((dirst->d_name), *pre, pre_len) == 0){
759
if(debug){
760
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
761
" with bad prefix %s\n", dirst->d_name, *pre);
762
}
763
bad_name = true;
764
break;
765
}
766
}
767
if(bad_name){
768
continue;
769
}
770
for(const char **suf = bad_suffixes; *suf != NULL; suf++){
771
size_t suf_len = strlen(*suf);
772
if((d_name_len >= suf_len)
773
and (strcmp((dirst->d_name)+d_name_len-suf_len, *suf)
774
== 0)){
775
if(debug){
776
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
777
" with bad suffix %s\n", dirst->d_name, *suf);
778
}
779
bad_name = true;
780
break;
781
}
782
}
783
784
if(bad_name){
785
continue;
786
}
787
}
788
789
char *filename;
790
if(plugindir == NULL){
791
ret = TEMP_FAILURE_RETRY(asprintf(&filename, PDIR "/%s",
792
dirst->d_name));
793
} else {
794
ret = TEMP_FAILURE_RETRY(asprintf(&filename, "%s/%s", plugindir,
795
dirst->d_name));
796
}
797
if(ret < 0){
798
perror("asprintf");
911
799
continue;
912
800
}
913
ret = (int)TEMP_FAILURE_RETRY(fstat(plugin_fd, &st));
801
802
ret = TEMP_FAILURE_RETRY(stat(filename, &st));
914
803
if(ret == -1){
915
error(0, errno, "stat");
916
close(plugin_fd);
917
free(direntries[i]);
804
perror("stat");
805
free(filename);
918
806
continue;
919
807
}
920
808
921
809
/* Ignore non-executable files */
922
810
if(not S_ISREG(st.st_mode)
923
or (TEMP_FAILURE_RETRY(faccessat(dir_fd, direntries[i]->d_name,
924
X_OK, 0)) != 0)){
811
or (TEMP_FAILURE_RETRY(access(filename, X_OK)) != 0)){
925
812
if(debug){
926
fprintf(stderr, "Ignoring plugin dir entry \"%s/%s\""
927
" with bad type or mode\n",
928
plugindir != NULL ? plugindir : PDIR,
929
direntries[i]->d_name);
813
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
814
" with bad type or mode\n", filename);
930
815
}
931
close(plugin_fd);
932
free(direntries[i]);
816
free(filename);
933
817
continue;
934
818
}
935
819
936
plugin *p = getplugin(direntries[i]->d_name);
820
plugin *p = getplugin(dirst->d_name);
937
821
if(p == NULL){
938
error(0, errno, "getplugin");
939
close(plugin_fd);
940
free(direntries[i]);
822
perror("getplugin");
823
free(filename);
941
824
continue;
942
825
}
943
826
if(p->disabled){
944
827
if(debug){
945
828
fprintf(stderr, "Ignoring disabled plugin \"%s\"\n",
946
direntries[i]->d_name);
829
dirst->d_name);
947
830
}
948
close(plugin_fd);
949
free(direntries[i]);
831
free(filename);
950
832
continue;
951
833
}
952
834
{
955
837
if(g != NULL){
956
838
for(char **a = g->argv + 1; *a != NULL; a++){
957
839
if(not add_argument(p, *a)){
958
error(0, errno, "add_argument");
840
perror("add_argument");
959
841
}
960
842
}
961
843
/* Add global environment variables */
962
844
for(char **e = g->environ; *e != NULL; e++){
963
845
if(not add_environment(p, *e, false)){
964
error(0, errno, "add_environment");
846
perror("add_environment");
965
847
}
966
848
}
967
849
}
968
850
}
969
/* If this plugin has any environment variables, we need to
970
duplicate the environment from this process, too. */
851
/* If this plugin has any environment variables, we will call
852
using execve and need to duplicate the environment from this
853
process, too. */
971
854
if(p->environ[0] != NULL){
972
855
for(char **e = environ; *e != NULL; e++){
973
856
if(not add_environment(p, *e, false)){
974
error(0, errno, "add_environment");
857
perror("add_environment");
975
858
}
976
859
}
977
860
}
978
861
979
862
int pipefd[2];
980
#ifndef O_CLOEXEC
981
ret = (int)TEMP_FAILURE_RETRY(pipe(pipefd));
982
#else /* O_CLOEXEC */
983
ret = (int)TEMP_FAILURE_RETRY(pipe2(pipefd, O_CLOEXEC));
984
#endif /* O_CLOEXEC */
863
ret = TEMP_FAILURE_RETRY(pipe(pipefd));
985
864
if(ret == -1){
986
error(0, errno, "pipe");
987
exitstatus = EX_OSERR;
988
free(direntries[i]);
989
goto fallback;
990
}
991
if(pipefd[0] >= FD_SETSIZE){
992
fprintf(stderr, "pipe()[0] (%d) >= FD_SETSIZE (%d)", pipefd[0],
993
FD_SETSIZE);
994
close(pipefd[0]);
995
close(pipefd[1]);
996
exitstatus = EX_OSERR;
997
free(direntries[i]);
998
goto fallback;
999
}
1000
#ifndef O_CLOEXEC
865
perror("pipe");
866
exitstatus = EXIT_FAILURE;
867
goto fallback;
868
}
1001
869
/* Ask OS to automatic close the pipe on exec */
1002
870
ret = set_cloexec_flag(pipefd[0]);
1003
871
if(ret < 0){
1004
error(0, errno, "set_cloexec_flag");
1005
close(pipefd[0]);
1006
close(pipefd[1]);
1007
exitstatus = EX_OSERR;
1008
free(direntries[i]);
872
perror("set_cloexec_flag");
873
exitstatus = EXIT_FAILURE;
1009
874
goto fallback;
1010
875
}
1011
876
ret = set_cloexec_flag(pipefd[1]);
1012
877
if(ret < 0){
1013
error(0, errno, "set_cloexec_flag");
1014
close(pipefd[0]);
1015
close(pipefd[1]);
1016
exitstatus = EX_OSERR;
1017
free(direntries[i]);
878
perror("set_cloexec_flag");
879
exitstatus = EXIT_FAILURE;
1018
880
goto fallback;
1019
881
}
1020
#endif /* not O_CLOEXEC */
1021
882
/* Block SIGCHLD until process is safely in process list */
1022
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_BLOCK,
1023
&sigchld_action.sa_mask,
1024
NULL));
883
ret = TEMP_FAILURE_RETRY(sigprocmask(SIG_BLOCK,
884
&sigchld_action.sa_mask,
885
NULL));
1025
886
if(ret < 0){
1026
error(0, errno, "sigprocmask");
1027
exitstatus = EX_OSERR;
1028
free(direntries[i]);
887
perror("sigprocmask");
888
exitstatus = EXIT_FAILURE;
1029
889
goto fallback;
1030
890
}
1031
891
/* Starting a new process to be watched */
1032
892
pid_t pid;
1033
do {
893
do{
1034
894
pid = fork();
1035
} while(pid == -1 and errno == EINTR);
895
}while(pid == -1 and errno == EINTR);
1036
896
if(pid == -1){
1037
error(0, errno, "fork");
1038
TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1039
&sigchld_action.sa_mask, NULL));
1040
close(pipefd[0]);
1041
close(pipefd[1]);
1042
exitstatus = EX_OSERR;
1043
free(direntries[i]);
897
perror("fork");
898
exitstatus = EXIT_FAILURE;
1044
899
goto fallback;
1045
900
}
1046
901
if(pid == 0){
1047
902
/* this is the child process */
1048
903
ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
1049
904
if(ret < 0){
1050
error(0, errno, "sigaction");
1051
_exit(EX_OSERR);
905
perror("sigaction");
906
_exit(EXIT_FAILURE);
1052
907
}
1053
908
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
1054
909
if(ret < 0){
1055
error(0, errno, "sigprocmask");
1056
_exit(EX_OSERR);
910
perror("sigprocmask");
911
_exit(EXIT_FAILURE);
1057
912
}
1058
913
1059
914
ret = dup2(pipefd[1], STDOUT_FILENO); /* replace our stdout */
1060
915
if(ret == -1){
1061
error(0, errno, "dup2");
1062
_exit(EX_OSERR);
916
perror("dup2");
917
_exit(EXIT_FAILURE);
1063
918
}
1064
919
1065
if(fexecve(plugin_fd, p->argv,
1066
(p->environ[0] != NULL) ? p->environ : environ) < 0){
1067
error(0, errno, "fexecve for %s/%s",
1068
plugindir != NULL ? plugindir : PDIR,
1069
direntries[i]->d_name);
1070
_exit(EX_OSERR);
920
if(dirfd(dir) < 0){
921
/* If dir has no file descriptor, we could not set FD_CLOEXEC
922
above and must now close it manually here. */
923
closedir(dir);
924
}
925
if(p->environ[0] == NULL){
926
if(execv(filename, p->argv) < 0){
927
perror("execv");
928
_exit(EXIT_FAILURE);
929
}
930
} else {
931
if(execve(filename, p->argv, p->environ) < 0){
932
perror("execve");
933
_exit(EXIT_FAILURE);
934
}
1071
935
}
1072
936
/* no return */
1073
937
}
1074
938
/* Parent process */
1075
close(pipefd[1]); /* Close unused write end of pipe */
1076
close(plugin_fd);
1077
plugin *new_plugin = getplugin(direntries[i]->d_name);
939
TEMP_FAILURE_RETRY(close(pipefd[1])); /* Close unused write end of
940
pipe */
941
free(filename);
942
plugin *new_plugin = getplugin(dirst->d_name);
1078
943
if(new_plugin == NULL){
1079
error(0, errno, "getplugin");
1080
ret = (int)(TEMP_FAILURE_RETRY
1081
(sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask,
1082
NULL)));
944
perror("getplugin");
945
ret = TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
946
&sigchld_action.sa_mask,
947
NULL));
1083
948
if(ret < 0){
1084
error(0, errno, "sigprocmask");
949
perror("sigprocmask");
1085
950
}
1086
exitstatus = EX_OSERR;
1087
free(direntries[i]);
951
exitstatus = EXIT_FAILURE;
1088
952
goto fallback;
1089
953
}
1090
free(direntries[i]);
1091
954
1092
955
new_plugin->pid = pid;
1093
956
new_plugin->fd = pipefd[0];
1094
957
1095
958
/* Unblock SIGCHLD so signal handler can be run if this process
1096
959
has already completed */
1097
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1098
&sigchld_action.sa_mask,
1099
NULL));
960
ret = TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
961
&sigchld_action.sa_mask,
962
NULL));
1100
963
if(ret < 0){
1101
error(0, errno, "sigprocmask");
1102
exitstatus = EX_OSERR;
964
perror("sigprocmask");
965
exitstatus = EXIT_FAILURE;
1103
966
goto fallback;
1104
967
}
1105
968
1110
973
}
1111
974
}
1112
975
1113
free(direntries);
1114
direntries = NULL;
1115
close(dir_fd);
1116
dir_fd = -1;
976
TEMP_FAILURE_RETRY(closedir(dir));
977
dir = NULL;
1117
978
free_plugin(getplugin(NULL));
1118
979
1119
980
for(plugin *p = plugin_list; p != NULL; p = p->next){
1132
993
fd_set rfds = rfds_all;
1133
994
int select_ret = select(maxfd+1, &rfds, NULL, NULL, NULL);
1134
995
if(select_ret == -1 and errno != EINTR){
1135
error(0, errno, "select");
1136
exitstatus = EX_OSERR;
996
perror("select");
997
exitstatus = EXIT_FAILURE;
1137
998
goto fallback;
1138
999
}
1139
1000
/* OK, now either a process completed, or something can be read
1158
1019
(intmax_t) (proc->pid),
1159
1020
WTERMSIG(proc->status),
1160
1021
strsignal(WTERMSIG(proc->status)));
1022
} else if(WCOREDUMP(proc->status)){
1023
fprintf(stderr, "Plugin %s [%" PRIdMAX "] dumped"
1024
" core\n", proc->name, (intmax_t) (proc->pid));
1161
1025
}
1162
1026
}
1163
1027
1165
1029
FD_CLR(proc->fd, &rfds_all);
1166
1030
1167
1031
/* Block signal while modifying process_list */
1168
ret = (int)TEMP_FAILURE_RETRY(sigprocmask
1169
(SIG_BLOCK,
1170
&sigchld_action.sa_mask,
1171
NULL));
1032
ret = TEMP_FAILURE_RETRY(sigprocmask(SIG_BLOCK,
1033
&sigchld_action.sa_mask,
1034
NULL));
1172
1035
if(ret < 0){
1173
error(0, errno, "sigprocmask");
1174
exitstatus = EX_OSERR;
1036
perror("sigprocmask");
1037
exitstatus = EXIT_FAILURE;
1175
1038
goto fallback;
1176
1039
}
1177
1040
1180
1043
proc = next_plugin;
1181
1044
1182
1045
/* 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)));
1046
ret = TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1047
&sigchld_action.sa_mask,
1048
NULL));
1186
1049
if(ret < 0){
1187
error(0, errno, "sigprocmask");
1188
exitstatus = EX_OSERR;
1050
perror("sigprocmask");
1051
exitstatus = EXIT_FAILURE;
1189
1052
goto fallback;
1190
1053
}
1191
1054
1201
1064
bool bret = print_out_password(proc->buffer,
1202
1065
proc->buffer_length);
1203
1066
if(not bret){
1204
error(0, errno, "print_out_password");
1205
exitstatus = EX_IOERR;
1067
perror("print_out_password");
1068
exitstatus = EXIT_FAILURE;
1206
1069
}
1207
1070
goto fallback;
1208
1071
}
1215
1078
}
1216
1079
/* Before reading, make the process' data buffer large enough */
1217
1080
if(proc->buffer_length + BUFFER_SIZE > proc->buffer_size){
1218
char *new_buffer = realloc(proc->buffer, proc->buffer_size
1219
+ (size_t) BUFFER_SIZE);
1220
if(new_buffer == NULL){
1221
error(0, errno, "malloc");
1222
exitstatus = EX_OSERR;
1081
proc->buffer = realloc(proc->buffer, proc->buffer_size
1082
+ (size_t) BUFFER_SIZE);
1083
if(proc->buffer == NULL){
1084
perror("malloc");
1085
exitstatus = EXIT_FAILURE;
1223
1086
goto fallback;
1224
1087
}
1225
proc->buffer = new_buffer;
1226
1088
proc->buffer_size += BUFFER_SIZE;
1227
1089
}
1228
1090
/* Read from the process */
1247
1109
1248
1110
fallback:
1249
1111
1250
if(plugin_list == NULL or (exitstatus != EXIT_SUCCESS
1251
and exitstatus != EX_OK)){
1112
if(plugin_list == NULL or exitstatus != EXIT_SUCCESS){
1252
1113
/* Fallback if all plugins failed, none are found or an error
1253
1114
occured */
1254
1115
bool bret;
1262
1123
}
1263
1124
bret = print_out_password(passwordbuffer, len);
1264
1125
if(not bret){
1265
error(0, errno, "print_out_password");
1266
exitstatus = EX_IOERR;
1126
perror("print_out_password");
1127
exitstatus = EXIT_FAILURE;
1267
1128
}
1268
1129
}
1269
1130
1270
1131
/* Restore old signal handler */
1271
1132
ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
1272
1133
if(ret == -1){
1273
error(0, errno, "sigaction");
1274
exitstatus = EX_OSERR;
1134
perror("sigaction");
1135
exitstatus = EXIT_FAILURE;
1275
1136
}
1276
1137
1277
1138
if(custom_argv != NULL){
1281
1142
free(custom_argv);
1282
1143
}
1283
1144
1284
free(direntries);
1285
1286
if(dir_fd != -1){
1287
close(dir_fd);
1145
if(dir != NULL){
1146
closedir(dir);
1288
1147
}
1289
1148
1290
1149
/* Kill the processes */
1294
1153
ret = kill(p->pid, SIGTERM);
1295
1154
if(ret == -1 and errno != ESRCH){
1296
1155
/* Set-uid proccesses might not get closed */
1297
error(0, errno, "kill");
1156
perror("kill");
1298
1157
}
1299
1158
}
1300
1159
}
1301
1160
1302
1161
/* Wait for any remaining child processes to terminate */
1303
do {
1162
do{
1304
1163
ret = wait(NULL);
1305
1164
} while(ret >= 0);
1306
1165
if(errno != ECHILD){
1307
error(0, errno, "wait");
1166
perror("wait");
1308
1167
}
1309
1168
1310
1169
free_plugin_list();
1311
1170
1312
1171
free(plugindir);
1313
free(pluginhelperdir);
1314
1172
free(argfile);
1315
1173
1316
1174
return exitstatus;
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0