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- Committer: Teddy Hogeborn
- Date: 2021-02-04 17:59:45 UTC
- Revision ID: teddy@recompile.se-20210204175945-8druo6d88ipc1z58
Fix issue with french translation
Initial white space was missing in both msgid and msgstr of the french
translation, leading to checking tools reporing an incomplete
translation. The string is a raw key id, and therefore did not need
translation, so this was never a user-visible issue.
* debian/po/fr.po: Add missing whitespace to the id and translation
for msgid " ${key_id}".
Initial white space was missing in both msgid and msgstr of the french
translation, leading to checking tools reporing an incomplete
translation. The string is a raw key id, and therefore did not need
translation, so this was never a user-visible issue.
* debian/po/fr.po: Add missing whitespace to the id and translation
for msgid " ${key_id}".
- files added:
- DBUS-API
- debian/source
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
plugin-runner.c
1
/* -*- coding: utf-8 -*- */
1
/* -*- coding: utf-8; mode: c; mode: orgtbl -*- */
2
2
/*
3
3
* Mandos plugin runner - Run Mandos plugins
4
4
*
5
* Copyright © 2008,2009 Teddy Hogeborn
6
* Copyright © 2008,2009 Björn Påhlsson
7
*
8
* This program is free software: you can redistribute it and/or
9
* modify it under the terms of the GNU General Public License as
10
* published by the Free Software Foundation, either version 3 of the
11
* License, or (at your option) any later version.
12
*
13
* This program is distributed in the hope that it will be useful, but
5
* Copyright © 2008-2021 Teddy Hogeborn
6
* Copyright © 2008-2021 Björn Påhlsson
7
*
8
* This file is part of Mandos.
9
*
10
* Mandos is free software: you can redistribute it and/or modify it
11
* under the terms of the GNU General Public License as published by
12
* the Free Software Foundation, either version 3 of the License, or
13
* (at your option) any later version.
14
*
15
* Mandos is distributed in the hope that it will be useful, but
14
16
* WITHOUT ANY WARRANTY; without even the implied warranty of
15
17
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16
18
* General Public License for more details.
17
19
*
18
20
* You should have received a copy of the GNU General Public License
19
* along with this program. If not, see
20
* <http://www.gnu.org/licenses/>.
21
* along with Mandos. If not, see <http://www.gnu.org/licenses/>.
21
22
*
22
* Contact the authors at <mandos@fukt.bsnet.se>.
23
* Contact the authors at <mandos@recompile.se>.
23
24
*/
24
25
25
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), getline(),
26
asprintf() */
26
#define _GNU_SOURCE /* strchrnul(), TEMP_FAILURE_RETRY(),
27
getline(), asprintf(), O_CLOEXEC,
28
scandirat(), pipe2() */
29
#include <argp.h> /* argp_program_version,
30
argp_program_bug_address,
31
struct argp_option,
32
struct argp_state, argp_error(),
33
ARGP_NO_EXIT, argp_state_help,
34
ARGP_HELP_STD_HELP,
35
ARGP_HELP_USAGE, ARGP_HELP_EXIT_OK,
36
ARGP_KEY_ARG, ARGP_ERR_UNKNOWN,
37
struct argp, argp_parse(),
38
ARGP_IN_ORDER, ARGP_NO_HELP */
39
#include <stdbool.h> /* bool, false, true */
40
#include <sys/types.h> /* pid_t, sig_atomic_t, uid_t, gid_t,
41
getuid(), setgid(), setuid() */
27
42
#include <stddef.h> /* size_t, NULL */
28
#include <stdlib.h> /* malloc(), exit(), EXIT_FAILURE,
29
EXIT_SUCCESS, realloc() */
30
#include <stdbool.h> /* bool, true, false */
31
#include <stdio.h> /* perror, fileno(), fprintf(),
32
stderr, STDOUT_FILENO */
33
#include <sys/types.h> /* DIR, opendir(), stat(), struct
34
stat, waitpid(), WIFEXITED(),
35
WEXITSTATUS(), wait(), pid_t,
36
uid_t, gid_t, getuid(), getgid(),
37
dirfd() */
38
#include <sys/select.h> /* fd_set, select(), FD_ZERO(),
39
FD_SET(), FD_ISSET(), FD_CLR */
40
#include <sys/wait.h> /* wait(), waitpid(), WIFEXITED(),
41
WEXITSTATUS() */
42
#include <sys/stat.h> /* struct stat, stat(), S_ISREG() */
43
#include <iso646.h> /* and, or, not */
44
#include <dirent.h> /* DIR, struct dirent, opendir(),
45
readdir(), closedir(), dirfd() */
46
#include <unistd.h> /* struct stat, stat(), S_ISREG(),
47
fcntl(), setuid(), setgid(),
48
F_GETFD, F_SETFD, FD_CLOEXEC,
49
access(), pipe(), fork(), close()
50
dup2(), STDOUT_FILENO, _exit(),
51
execv(), write(), read(),
52
close() */
43
#include <iso646.h> /* or, and, not */
44
#include <string.h> /* strcmp(), strdup(), strchrnul(),
45
strncmp(), strlen(), strcpy(),
46
strsep(), strchr(), strsignal() */
47
#include <stdlib.h> /* malloc(), free(), reallocarray(),
48
realloc(), EXIT_SUCCESS */
49
#include <errno.h> /* errno, EINTR, ENOMEM, ECHILD,
50
error_t, EINVAL, EMFILE, ENFILE,
51
ENOENT, ESRCH */
52
#include <stdint.h> /* SIZE_MAX */
53
#define _GNU_SOURCE /* strchrnul(), TEMP_FAILURE_RETRY(),
54
getline(), asprintf(), O_CLOEXEC,
55
scandirat(), pipe2() */
56
#include <unistd.h> /* TEMP_FAILURE_RETRY(), ssize_t,
57
write(), STDOUT_FILENO, uid_t,
58
gid_t, getuid(), fchown(), close(),
59
symlink(), setgid(), setuid(),
60
faccessat(), X_OK, pipe(), pipe2(),
61
fork(), _exit(), dup2(), fexecve(),
62
read(), getpass() */
53
63
#include <fcntl.h> /* fcntl(), F_GETFD, F_SETFD,
54
FD_CLOEXEC */
55
#include <string.h> /* strsep, strlen(), asprintf() */
56
#include <errno.h> /* errno */
57
#include <argp.h> /* struct argp_option, struct
58
argp_state, struct argp,
59
argp_parse(), ARGP_ERR_UNKNOWN,
60
ARGP_KEY_END, ARGP_KEY_ARG,
61
error_t */
62
#include <signal.h> /* struct sigaction, sigemptyset(),
63
sigaddset(), sigaction(),
64
sigprocmask(), SIG_BLOCK, SIGCHLD,
65
SIG_UNBLOCK, kill(), sig_atomic_t
66
*/
67
#include <errno.h> /* errno, EBADF */
68
#include <inttypes.h> /* intmax_t, PRIdMAX, strtoimax() */
64
FD_CLOEXEC, open(), O_RDONLY,
65
O_CLOEXEC, openat() */
66
#include <sys/wait.h> /* waitpid(), WNOHANG, WIFEXITED(),
67
WEXITSTATUS(), WIFSIGNALED(),
68
WTERMSIG(), wait() */
69
#include <error.h> /* error() */
70
#include <stdio.h> /* FILE, fprintf(), fopen(),
71
getline(), fclose(), EOF,
72
asprintf(), stderr */
73
#include <dirent.h> /* struct dirent, scandirat(),
74
alphasort() */
75
#include <sys/stat.h> /* struct stat, fstat(), S_ISDIR(),
76
lstat(), S_ISREG() */
77
#include <sys/select.h> /* fd_set, FD_ZERO(), FD_SETSIZE,
78
FD_SET(), select(), FD_CLR(),
79
FD_ISSET() */
80
#include <signal.h> /* struct sigaction, SA_NOCLDSTOP,
81
sigemptyset(), sigaddset(),
82
SIGCHLD, sigprocmask(), SIG_BLOCK,
83
SIG_UNBLOCK, kill(), SIGTERM */
84
#include <sysexits.h> /* EX_OSERR, EX_USAGE, EX_IOERR,
85
EX_CONFIG, EX_UNAVAILABLE, EX_OK */
86
#include <inttypes.h> /* intmax_t, strtoimax(), PRIdMAX */
87
#include <fnmatch.h> /* fnmatch(), FNM_FILE_NAME,
88
FNM_PERIOD, FNM_NOMATCH */
69
89
70
90
#define BUFFER_SIZE 256
71
91
72
92
#define PDIR "/lib/mandos/plugins.d"
93
#define PHDIR "/lib/mandos/plugin-helpers"
73
94
#define AFILE "/conf/conf.d/mandos/plugin-runner.conf"
74
95
75
96
const char *argp_program_version = "plugin-runner " VERSION;
76
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
97
const char *argp_program_bug_address = "<mandos@recompile.se>";
77
98
78
99
typedef struct plugin{
79
100
char *name; /* can be NULL or any plugin name */
99
120
100
121
/* Gets an existing plugin based on name,
101
122
or if none is found, creates a new one */
123
__attribute__((warn_unused_result))
102
124
static plugin *getplugin(char *name){
103
/* Check for exiting plugin with that name */
125
/* Check for existing plugin with that name */
104
126
for(plugin *p = plugin_list; p != NULL; p = p->next){
105
127
if((p->name == name)
106
128
or (p->name and name and (strcmp(p->name, name) == 0))){
108
130
}
109
131
}
110
132
/* Create a new plugin */
111
plugin *new_plugin = malloc(sizeof(plugin));
133
plugin *new_plugin = NULL;
134
do {
135
new_plugin = malloc(sizeof(plugin));
136
} while(new_plugin == NULL and errno == EINTR);
112
137
if(new_plugin == NULL){
113
138
return NULL;
114
139
}
115
140
char *copy_name = NULL;
116
141
if(name != NULL){
117
copy_name = strdup(name);
142
do {
143
copy_name = strdup(name);
144
} while(copy_name == NULL and errno == EINTR);
118
145
if(copy_name == NULL){
146
int e = errno;
119
147
free(new_plugin);
148
errno = e;
120
149
return NULL;
121
150
}
122
151
}
126
155
.disabled = false,
127
156
.next = plugin_list };
128
157
129
new_plugin->argv = malloc(sizeof(char *) * 2);
158
do {
159
new_plugin->argv = malloc(sizeof(char *) * 2);
160
} while(new_plugin->argv == NULL and errno == EINTR);
130
161
if(new_plugin->argv == NULL){
162
int e = errno;
131
163
free(copy_name);
132
164
free(new_plugin);
165
errno = e;
133
166
return NULL;
134
167
}
135
168
new_plugin->argv[0] = copy_name;
136
169
new_plugin->argv[1] = NULL;
137
170
138
new_plugin->environ = malloc(sizeof(char *));
171
do {
172
new_plugin->environ = malloc(sizeof(char *));
173
} while(new_plugin->environ == NULL and errno == EINTR);
139
174
if(new_plugin->environ == NULL){
175
int e = errno;
140
176
free(copy_name);
141
177
free(new_plugin->argv);
142
178
free(new_plugin);
179
errno = e;
143
180
return NULL;
144
181
}
145
182
new_plugin->environ[0] = NULL;
150
187
}
151
188
152
189
/* Helper function for add_argument and add_environment */
190
__attribute__((nonnull, warn_unused_result))
153
191
static bool add_to_char_array(const char *new, char ***array,
154
192
int *len){
155
193
/* Resize the pointed-to array to hold one more pointer */
156
*array = realloc(*array, sizeof(char *)
157
* (size_t) ((*len) + 2));
194
char **new_array = NULL;
195
do {
196
#if defined(__GLIBC_PREREQ) and __GLIBC_PREREQ(2, 26)
197
new_array = reallocarray(*array, (size_t)((*len) + 2),
198
sizeof(char *));
199
#else
200
if(((size_t)((*len) + 2)) > (SIZE_MAX / sizeof(char *))){
201
/* overflow */
202
new_array = NULL;
203
errno = ENOMEM;
204
} else {
205
new_array = realloc(*array, (size_t)((*len) + 2)
206
* sizeof(char *));
207
}
208
#endif
209
} while(new_array == NULL and errno == EINTR);
158
210
/* Malloc check */
159
if(*array == NULL){
211
if(new_array == NULL){
160
212
return false;
161
213
}
214
*array = new_array;
162
215
/* Make a copy of the new string */
163
char *copy = strdup(new);
216
char *copy;
217
do {
218
copy = strdup(new);
219
} while(copy == NULL and errno == EINTR);
164
220
if(copy == NULL){
165
221
return false;
166
222
}
173
229
}
174
230
175
231
/* Add to a plugin's argument vector */
232
__attribute__((nonnull(2), warn_unused_result))
176
233
static bool add_argument(plugin *p, const char *arg){
177
234
if(p == NULL){
178
235
return false;
181
238
}
182
239
183
240
/* Add to a plugin's environment */
241
__attribute__((nonnull(2), warn_unused_result))
184
242
static bool add_environment(plugin *p, const char *def, bool replace){
185
243
if(p == NULL){
186
244
return false;
188
246
/* namelen = length of name of environment variable */
189
247
size_t namelen = (size_t)(strchrnul(def, '=') - def);
190
248
/* Search for this environment variable */
191
for(char **e = p->environ; *e != NULL; e++){
192
if(strncmp(*e, def, namelen + 1) == 0){
249
for(char **envdef = p->environ; *envdef != NULL; envdef++){
250
if(strncmp(*envdef, def, namelen + 1) == 0){
193
251
/* It already exists */
194
252
if(replace){
195
char *new = realloc(*e, strlen(def) + 1);
196
if(new == NULL){
253
char *new_envdef;
254
do {
255
new_envdef = realloc(*envdef, strlen(def) + 1);
256
} while(new_envdef == NULL and errno == EINTR);
257
if(new_envdef == NULL){
197
258
return false;
198
259
}
199
*e = new;
200
strcpy(*e, def);
260
*envdef = new_envdef;
261
strcpy(*envdef, def);
201
262
}
202
263
return true;
203
264
}
205
266
return add_to_char_array(def, &(p->environ), &(p->envc));
206
267
}
207
268
269
#ifndef O_CLOEXEC
208
270
/*
209
271
* Based on the example in the GNU LibC manual chapter 13.13 "File
210
272
* Descriptor Flags".
211
* *Note File Descriptor Flags:(libc)Descriptor Flags.
273
| [[info:libc:Descriptor%20Flags][File Descriptor Flags]] |
212
274
*/
275
__attribute__((warn_unused_result))
213
276
static int set_cloexec_flag(int fd){
214
int ret = fcntl(fd, F_GETFD, 0);
277
int ret = (int)TEMP_FAILURE_RETRY(fcntl(fd, F_GETFD, 0));
215
278
/* If reading the flags failed, return error indication now. */
216
279
if(ret < 0){
217
280
return ret;
218
281
}
219
282
/* Store modified flag word in the descriptor. */
220
return fcntl(fd, F_SETFD, ret | FD_CLOEXEC);
283
return (int)TEMP_FAILURE_RETRY(fcntl(fd, F_SETFD,
284
ret | FD_CLOEXEC));
221
285
}
286
#endif /* not O_CLOEXEC */
222
287
223
288
224
289
/* Mark processes as completed when they exit, and save their exit
238
303
/* No child processes */
239
304
break;
240
305
}
241
perror("waitpid");
306
error(0, errno, "waitpid");
242
307
}
243
308
244
309
/* A child exited, find it in process_list */
256
321
}
257
322
258
323
/* Prints out a password to stdout */
324
__attribute__((nonnull, warn_unused_result))
259
325
static bool print_out_password(const char *buffer, size_t length){
260
326
ssize_t ret;
261
327
for(size_t written = 0; written < length; written += (size_t)ret){
269
335
}
270
336
271
337
/* Removes and free a plugin from the plugin list */
338
__attribute__((nonnull))
272
339
static void free_plugin(plugin *plugin_node){
273
340
274
for(char **arg = plugin_node->argv; *arg != NULL; arg++){
341
for(char **arg = (plugin_node->argv)+1; *arg != NULL; arg++){
275
342
free(*arg);
276
343
}
344
free(plugin_node->name);
277
345
free(plugin_node->argv);
278
346
for(char **env = plugin_node->environ; *env != NULL; env++){
279
347
free(*env);
306
374
307
375
int main(int argc, char *argv[]){
308
376
char *plugindir = NULL;
377
char *pluginhelperdir = NULL;
309
378
char *argfile = NULL;
310
379
FILE *conffp;
311
size_t d_name_len;
312
DIR *dir = NULL;
313
struct dirent *dirst;
380
struct dirent **direntries = NULL;
314
381
struct stat st;
315
382
fd_set rfds_all;
316
383
int ret, maxfd = 0;
317
384
ssize_t sret;
318
intmax_t tmpmax;
319
385
uid_t uid = 65534;
320
386
gid_t gid = 65534;
321
387
bool debug = false;
325
391
.sa_flags = SA_NOCLDSTOP };
326
392
char **custom_argv = NULL;
327
393
int custom_argc = 0;
394
int dir_fd = -1;
328
395
329
396
/* Establish a signal handler */
330
397
sigemptyset(&sigchld_action.sa_mask);
331
398
ret = sigaddset(&sigchld_action.sa_mask, SIGCHLD);
332
399
if(ret == -1){
333
perror("sigaddset");
334
exitstatus = EXIT_FAILURE;
400
error(0, errno, "sigaddset");
401
exitstatus = EX_OSERR;
335
402
goto fallback;
336
403
}
337
404
ret = sigaction(SIGCHLD, &sigchld_action, &old_sigchld_action);
338
405
if(ret == -1){
339
perror("sigaction");
340
exitstatus = EXIT_FAILURE;
406
error(0, errno, "sigaction");
407
exitstatus = EX_OSERR;
341
408
goto fallback;
342
409
}
343
410
375
442
.doc = "Group ID the plugins will run as", .group = 3 },
376
443
{ .name = "debug", .key = 132,
377
444
.doc = "Debug mode", .group = 4 },
445
{ .name = "plugin-helper-dir", .key = 133,
446
.arg = "DIRECTORY",
447
.doc = "Specify a different plugin helper directory",
448
.group = 2 },
449
/*
450
* These reproduce what we would get without ARGP_NO_HELP
451
*/
452
{ .name = "help", .key = '?',
453
.doc = "Give this help list", .group = -1 },
454
{ .name = "usage", .key = -3,
455
.doc = "Give a short usage message", .group = -1 },
456
{ .name = "version", .key = 'V',
457
.doc = "Print program version", .group = -1 },
378
458
{ .name = NULL }
379
459
};
380
460
381
error_t parse_opt(int key, char *arg, __attribute__((unused))
382
struct argp_state *state){
383
char *tmp;
461
__attribute__((nonnull(3)))
462
error_t parse_opt(int key, char *arg, struct argp_state *state){
463
errno = 0;
384
464
switch(key){
465
char *tmp;
466
intmax_t tmp_id;
385
467
case 'g': /* --global-options */
386
if(arg != NULL){
468
{
387
469
char *plugin_option;
388
470
while((plugin_option = strsep(&arg, ",")) != NULL){
389
if(plugin_option[0] == '\0'){
390
continue;
391
}
392
471
if(not add_argument(getplugin(NULL), plugin_option)){
393
perror("add_argument");
394
return ARGP_ERR_UNKNOWN;
472
break;
395
473
}
396
474
}
475
errno = 0;
397
476
}
398
477
break;
399
478
case 'G': /* --global-env */
400
if(arg == NULL){
401
break;
402
}
403
if(not add_environment(getplugin(NULL), arg, true)){
404
perror("add_environment");
479
if(add_environment(getplugin(NULL), arg, true)){
480
errno = 0;
405
481
}
406
482
break;
407
483
case 'o': /* --options-for */
408
if(arg != NULL){
409
char *plugin_name = strsep(&arg, ":");
410
if(plugin_name[0] == '\0'){
411
break;
412
}
413
char *plugin_option;
414
while((plugin_option = strsep(&arg, ",")) != NULL){
415
if(not add_argument(getplugin(plugin_name), plugin_option)){
416
perror("add_argument");
417
return ARGP_ERR_UNKNOWN;
484
{
485
char *option_list = strchr(arg, ':');
486
if(option_list == NULL){
487
argp_error(state, "No colon in \"%s\"", arg);
488
errno = EINVAL;
489
break;
490
}
491
*option_list = '\0';
492
option_list++;
493
if(arg[0] == '\0'){
494
argp_error(state, "Empty plugin name");
495
errno = EINVAL;
496
break;
497
}
498
char *option;
499
while((option = strsep(&option_list, ",")) != NULL){
500
if(not add_argument(getplugin(arg), option)){
501
break;
418
502
}
419
503
}
504
errno = 0;
420
505
}
421
506
break;
422
507
case 'E': /* --env-for */
423
if(arg == NULL){
424
break;
425
}
426
508
{
427
509
char *envdef = strchr(arg, ':');
428
510
if(envdef == NULL){
511
argp_error(state, "No colon in \"%s\"", arg);
512
errno = EINVAL;
429
513
break;
430
514
}
431
515
*envdef = '\0';
432
if(not add_environment(getplugin(arg), envdef+1, true)){
433
perror("add_environment");
516
envdef++;
517
if(arg[0] == '\0'){
518
argp_error(state, "Empty plugin name");
519
errno = EINVAL;
520
break;
521
}
522
if(add_environment(getplugin(arg), envdef, true)){
523
errno = 0;
434
524
}
435
525
}
436
526
break;
437
527
case 'd': /* --disable */
438
if(arg != NULL){
528
{
439
529
plugin *p = getplugin(arg);
440
if(p == NULL){
441
return ARGP_ERR_UNKNOWN;
530
if(p != NULL){
531
p->disabled = true;
532
errno = 0;
442
533
}
443
p->disabled = true;
444
534
}
445
535
break;
446
536
case 'e': /* --enable */
447
if(arg != NULL){
537
{
448
538
plugin *p = getplugin(arg);
449
if(p == NULL){
450
return ARGP_ERR_UNKNOWN;
539
if(p != NULL){
540
p->disabled = false;
541
errno = 0;
451
542
}
452
p->disabled = false;
453
543
}
454
544
break;
455
545
case 128: /* --plugin-dir */
456
546
free(plugindir);
457
547
plugindir = strdup(arg);
458
if(plugindir == NULL){
459
perror("strdup");
460
}
548
if(plugindir != NULL){
549
errno = 0;
550
}
461
551
break;
462
552
case 129: /* --config-file */
463
553
/* This is already done by parse_opt_config_file() */
464
554
break;
465
555
case 130: /* --userid */
466
errno = 0;
467
tmpmax = strtoimax(arg, &tmp, 10);
556
tmp_id = strtoimax(arg, &tmp, 10);
468
557
if(errno != 0 or tmp == arg or *tmp != '\0'
469
or tmpmax != (uid_t)tmpmax){
470
fprintf(stderr, "Bad user ID number: \"%s\", using %"
471
PRIdMAX "\n", arg, (intmax_t)uid);
472
} else {
473
uid = (uid_t)tmpmax;
558
or tmp_id != (uid_t)tmp_id){
559
argp_error(state, "Bad user ID number: \"%s\", using %"
560
PRIdMAX, arg, (intmax_t)uid);
561
break;
474
562
}
563
uid = (uid_t)tmp_id;
564
errno = 0;
475
565
break;
476
566
case 131: /* --groupid */
477
errno = 0;
478
tmpmax = strtoimax(arg, &tmp, 10);
567
tmp_id = strtoimax(arg, &tmp, 10);
479
568
if(errno != 0 or tmp == arg or *tmp != '\0'
480
or tmpmax != (gid_t)tmpmax){
481
fprintf(stderr, "Bad group ID number: \"%s\", using %"
482
PRIdMAX "\n", arg, (intmax_t)gid);
483
} else {
484
gid = (gid_t)tmpmax;
569
or tmp_id != (gid_t)tmp_id){
570
argp_error(state, "Bad group ID number: \"%s\", using %"
571
PRIdMAX, arg, (intmax_t)gid);
572
break;
485
573
}
574
gid = (gid_t)tmp_id;
575
errno = 0;
486
576
break;
487
577
case 132: /* --debug */
488
578
debug = true;
489
579
break;
580
case 133: /* --plugin-helper-dir */
581
free(pluginhelperdir);
582
pluginhelperdir = strdup(arg);
583
if(pluginhelperdir != NULL){
584
errno = 0;
585
}
586
break;
587
/*
588
* These reproduce what we would get without ARGP_NO_HELP
589
*/
590
case '?': /* --help */
591
state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
592
argp_state_help(state, state->out_stream, ARGP_HELP_STD_HELP);
593
__builtin_unreachable();
594
case -3: /* --usage */
595
state->flags &= ~(unsigned int)ARGP_NO_EXIT; /* force exit */
596
argp_state_help(state, state->out_stream,
597
ARGP_HELP_USAGE | ARGP_HELP_EXIT_OK);
598
__builtin_unreachable();
599
case 'V': /* --version */
600
fprintf(state->out_stream, "%s\n", argp_program_version);
601
exit(EXIT_SUCCESS);
602
break;
490
603
/*
491
604
* When adding more options before this line, remember to also add a
492
605
* "case" to the "parse_opt_config_file" function below.
495
608
/* Cryptsetup always passes an argument, which is an empty
496
609
string if "none" was specified in /etc/crypttab. So if
497
610
argument was empty, we ignore it silently. */
498
if(arg[0] != '\0'){
499
fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
611
if(arg[0] == '\0'){
612
break;
500
613
}
501
break;
502
case ARGP_KEY_END:
503
break;
614
#if __GNUC__ >= 7
615
__attribute__((fallthrough));
616
#else
617
/* FALLTHROUGH */
618
#endif
504
619
default:
505
620
return ARGP_ERR_UNKNOWN;
506
621
}
507
return 0;
622
return errno; /* Set to 0 at start */
508
623
}
509
624
510
625
/* This option parser is the same as parse_opt() above, except it
512
627
error_t parse_opt_config_file(int key, char *arg,
513
628
__attribute__((unused))
514
629
struct argp_state *state){
630
errno = 0;
515
631
switch(key){
516
632
case 'g': /* --global-options */
517
633
case 'G': /* --global-env */
524
640
case 129: /* --config-file */
525
641
free(argfile);
526
642
argfile = strdup(arg);
527
if(argfile == NULL){
528
perror("strdup");
643
if(argfile != NULL){
644
errno = 0;
529
645
}
530
break;
646
break;
531
647
case 130: /* --userid */
532
648
case 131: /* --groupid */
533
649
case 132: /* --debug */
650
case 133: /* --plugin-helper-dir */
651
case '?': /* --help */
652
case -3: /* --usage */
653
case 'V': /* --version */
534
654
case ARGP_KEY_ARG:
535
case ARGP_KEY_END:
536
655
break;
537
656
default:
538
657
return ARGP_ERR_UNKNOWN;
539
658
}
540
return 0;
659
return errno;
541
660
}
542
661
543
662
struct argp argp = { .options = options,
547
666
548
667
/* Parse using parse_opt_config_file() in order to get the custom
549
668
config file location, if any. */
550
ret = argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
551
if(ret == ARGP_ERR_UNKNOWN){
552
fprintf(stderr, "Unknown error while parsing arguments\n");
553
exitstatus = EXIT_FAILURE;
669
ret = argp_parse(&argp, argc, argv,
670
ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
671
NULL, NULL);
672
switch(ret){
673
case 0:
674
break;
675
case ENOMEM:
676
default:
677
errno = ret;
678
error(0, errno, "argp_parse");
679
exitstatus = EX_OSERR;
680
goto fallback;
681
case EINVAL:
682
exitstatus = EX_USAGE;
554
683
goto fallback;
555
684
}
556
685
562
691
conffp = fopen(AFILE, "r");
563
692
} else {
564
693
conffp = fopen(argfile, "r");
565
}
694
}
566
695
if(conffp != NULL){
567
696
char *org_line = NULL;
568
697
char *p, *arg, *new_arg, *line;
573
702
custom_argc = 1;
574
703
custom_argv = malloc(sizeof(char*) * 2);
575
704
if(custom_argv == NULL){
576
perror("malloc");
577
exitstatus = EXIT_FAILURE;
705
error(0, errno, "malloc");
706
exitstatus = EX_OSERR;
578
707
goto fallback;
579
708
}
580
709
custom_argv[0] = argv[0];
596
725
}
597
726
new_arg = strdup(p);
598
727
if(new_arg == NULL){
599
perror("strdup");
600
exitstatus = EXIT_FAILURE;
728
error(0, errno, "strdup");
729
exitstatus = EX_OSERR;
601
730
free(org_line);
602
731
goto fallback;
603
732
}
604
733
605
734
custom_argc += 1;
606
custom_argv = realloc(custom_argv, sizeof(char *)
607
* ((unsigned int) custom_argc + 1));
608
if(custom_argv == NULL){
609
perror("realloc");
610
exitstatus = EXIT_FAILURE;
611
free(org_line);
612
goto fallback;
735
{
736
#if defined(__GLIBC_PREREQ) and __GLIBC_PREREQ(2, 26)
737
char **new_argv = reallocarray(custom_argv, (size_t)custom_argc + 1,
738
sizeof(char *));
739
#else
740
char **new_argv = NULL;
741
if(((size_t)custom_argc + 1) > (SIZE_MAX / sizeof(char *))){
742
/* overflow */
743
errno = ENOMEM;
744
} else {
745
new_argv = realloc(custom_argv, ((size_t)custom_argc + 1)
746
* sizeof(char *));
747
}
748
#endif
749
if(new_argv == NULL){
750
error(0, errno, "reallocarray");
751
exitstatus = EX_OSERR;
752
free(new_arg);
753
free(org_line);
754
goto fallback;
755
} else {
756
custom_argv = new_argv;
757
}
613
758
}
614
759
custom_argv[custom_argc-1] = new_arg;
615
custom_argv[custom_argc] = NULL;
760
custom_argv[custom_argc] = NULL;
616
761
}
617
762
}
763
do {
764
ret = fclose(conffp);
765
} while(ret == EOF and errno == EINTR);
766
if(ret == EOF){
767
error(0, errno, "fclose");
768
exitstatus = EX_IOERR;
769
goto fallback;
770
}
618
771
free(org_line);
619
772
} else {
620
773
/* Check for harmful errors and go to fallback. Other errors might
621
774
not affect opening plugins */
622
775
if(errno == EMFILE or errno == ENFILE or errno == ENOMEM){
623
perror("fopen");
624
exitstatus = EXIT_FAILURE;
776
error(0, errno, "fopen");
777
exitstatus = EX_OSERR;
625
778
goto fallback;
626
779
}
627
780
}
628
/* If there was any arguments from configuration file,
629
pass them to parser as command arguments */
781
/* If there were any arguments from the configuration file, pass
782
them to parser as command line arguments */
630
783
if(custom_argv != NULL){
631
ret = argp_parse(&argp, custom_argc, custom_argv, ARGP_IN_ORDER,
632
0, NULL);
633
if(ret == ARGP_ERR_UNKNOWN){
634
fprintf(stderr, "Unknown error while parsing arguments\n");
635
exitstatus = EXIT_FAILURE;
784
ret = argp_parse(&argp, custom_argc, custom_argv,
785
ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
786
NULL, NULL);
787
switch(ret){
788
case 0:
789
break;
790
case ENOMEM:
791
default:
792
errno = ret;
793
error(0, errno, "argp_parse");
794
exitstatus = EX_OSERR;
795
goto fallback;
796
case EINVAL:
797
exitstatus = EX_CONFIG;
636
798
goto fallback;
637
799
}
638
800
}
639
801
640
802
/* Parse actual command line arguments, to let them override the
641
803
config file */
642
ret = argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
643
if(ret == ARGP_ERR_UNKNOWN){
644
fprintf(stderr, "Unknown error while parsing arguments\n");
645
exitstatus = EXIT_FAILURE;
646
goto fallback;
804
ret = argp_parse(&argp, argc, argv,
805
ARGP_IN_ORDER | ARGP_NO_EXIT | ARGP_NO_HELP,
806
NULL, NULL);
807
switch(ret){
808
case 0:
809
break;
810
case ENOMEM:
811
default:
812
errno = ret;
813
error(0, errno, "argp_parse");
814
exitstatus = EX_OSERR;
815
goto fallback;
816
case EINVAL:
817
exitstatus = EX_USAGE;
818
goto fallback;
819
}
820
821
{
822
char *pluginhelperenv;
823
bool bret = true;
824
ret = asprintf(&pluginhelperenv, "MANDOSPLUGINHELPERDIR=%s",
825
pluginhelperdir != NULL ? pluginhelperdir : PHDIR);
826
if(ret != -1){
827
bret = add_environment(getplugin(NULL), pluginhelperenv, true);
828
}
829
if(ret == -1 or not bret){
830
error(0, errno, "Failed to set MANDOSPLUGINHELPERDIR"
831
" environment variable to \"%s\" for all plugins\n",
832
pluginhelperdir != NULL ? pluginhelperdir : PHDIR);
833
}
834
if(ret != -1){
835
free(pluginhelperenv);
836
}
647
837
}
648
838
649
839
if(debug){
650
for(plugin *p = plugin_list; p != NULL; p=p->next){
840
for(plugin *p = plugin_list; p != NULL; p = p->next){
651
841
fprintf(stderr, "Plugin: %s has %d arguments\n",
652
842
p->name ? p->name : "Global", p->argc - 1);
653
843
for(char **a = p->argv; *a != NULL; a++){
660
850
}
661
851
}
662
852
663
/* Strip permissions down to nobody */
664
setgid(gid);
853
if(getuid() == 0){
854
/* Work around Debian bug #633582:
855
<https://bugs.debian.org/633582> */
856
int plugindir_fd = open(/* plugindir or */ PDIR, O_RDONLY);
857
if(plugindir_fd == -1){
858
if(errno != ENOENT){
859
error(0, errno, "open(\"" PDIR "\")");
860
}
861
} else {
862
ret = (int)TEMP_FAILURE_RETRY(fstat(plugindir_fd, &st));
863
if(ret == -1){
864
error(0, errno, "fstat");
865
} else {
866
if(S_ISDIR(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
867
ret = fchown(plugindir_fd, uid, gid);
868
if(ret == -1){
869
error(0, errno, "fchown");
870
}
871
}
872
}
873
close(plugindir_fd);
874
}
875
876
/* Work around Debian bug #981302
877
<https://bugs.debian.org/981302> */
878
if(lstat("/dev/fd", &st) != 0 and errno == ENOENT){
879
ret = symlink("/proc/self/fd", "/dev/fd");
880
if(ret == -1){
881
error(0, errno, "Failed to create /dev/fd symlink");
882
}
883
}
884
}
885
886
/* Lower permissions */
887
ret = setgid(gid);
665
888
if(ret == -1){
666
perror("setgid");
889
error(0, errno, "setgid");
667
890
}
668
891
ret = setuid(uid);
669
892
if(ret == -1){
670
perror("setuid");
671
}
672
673
if(plugindir == NULL){
674
dir = opendir(PDIR);
675
} else {
676
dir = opendir(plugindir);
677
}
678
679
if(dir == NULL){
680
perror("Could not open plugin dir");
681
exitstatus = EXIT_FAILURE;
682
goto fallback;
683
}
684
685
/* Set the FD_CLOEXEC flag on the directory, if possible */
893
error(0, errno, "setuid");
894
}
895
896
/* Open plugin directory with close_on_exec flag */
686
897
{
687
int dir_fd = dirfd(dir);
688
if(dir_fd >= 0){
689
ret = set_cloexec_flag(dir_fd);
690
if(ret < 0){
691
perror("set_cloexec_flag");
692
exitstatus = EXIT_FAILURE;
693
goto fallback;
898
dir_fd = open(plugindir != NULL ? plugindir : PDIR, O_RDONLY |
899
#ifdef O_CLOEXEC
900
O_CLOEXEC
901
#else /* not O_CLOEXEC */
902
0
903
#endif /* not O_CLOEXEC */
904
);
905
if(dir_fd == -1){
906
error(0, errno, "Could not open plugin dir");
907
exitstatus = EX_UNAVAILABLE;
908
goto fallback;
909
}
910
911
#ifndef O_CLOEXEC
912
/* Set the FD_CLOEXEC flag on the directory */
913
ret = set_cloexec_flag(dir_fd);
914
if(ret < 0){
915
error(0, errno, "set_cloexec_flag");
916
exitstatus = EX_OSERR;
917
goto fallback;
918
}
919
#endif /* O_CLOEXEC */
920
}
921
922
int good_name(const struct dirent * const dirent){
923
const char * const patterns[] = { ".*", "#*#", "*~", "*.dpkg-new",
924
"*.dpkg-old", "*.dpkg-bak",
925
"*.dpkg-divert", NULL };
926
#ifdef __GNUC__
927
#pragma GCC diagnostic push
928
#pragma GCC diagnostic ignored "-Wcast-qual"
929
#endif
930
for(const char **pat = (const char **)patterns;
931
*pat != NULL; pat++){
932
#ifdef __GNUC__
933
#pragma GCC diagnostic pop
934
#endif
935
if(fnmatch(*pat, dirent->d_name, FNM_FILE_NAME | FNM_PERIOD)
936
!= FNM_NOMATCH){
937
if(debug){
938
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
939
" matching pattern %s\n", dirent->d_name, *pat);
940
}
941
return 0;
694
942
}
695
943
}
944
return 1;
945
}
946
947
int numplugins = scandirat(dir_fd, ".", &direntries, good_name,
948
alphasort);
949
if(numplugins == -1){
950
error(0, errno, "Could not scan plugin dir");
951
direntries = NULL;
952
exitstatus = EX_OSERR;
953
goto fallback;
696
954
}
697
955
698
956
FD_ZERO(&rfds_all);
699
957
700
958
/* Read and execute any executable in the plugin directory*/
701
while(true){
702
dirst = readdir(dir);
703
704
/* All directory entries have been processed */
705
if(dirst == NULL){
706
if(errno == EBADF){
707
perror("readdir");
708
exitstatus = EXIT_FAILURE;
709
goto fallback;
710
}
711
break;
712
}
713
714
d_name_len = strlen(dirst->d_name);
715
716
/* Ignore dotfiles, backup files and other junk */
717
{
718
bool bad_name = false;
719
720
const char const *bad_prefixes[] = { ".", "#", NULL };
721
722
const char const *bad_suffixes[] = { "~", "#", ".dpkg-new",
723
".dpkg-old",
724
".dpkg-bak",
725
".dpkg-divert", NULL };
726
for(const char **pre = bad_prefixes; *pre != NULL; pre++){
727
size_t pre_len = strlen(*pre);
728
if((d_name_len >= pre_len)
729
and strncmp((dirst->d_name), *pre, pre_len) == 0){
730
if(debug){
731
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
732
" with bad prefix %s\n", dirst->d_name, *pre);
733
}
734
bad_name = true;
735
break;
736
}
737
}
738
if(bad_name){
739
continue;
740
}
741
for(const char **suf = bad_suffixes; *suf != NULL; suf++){
742
size_t suf_len = strlen(*suf);
743
if((d_name_len >= suf_len)
744
and (strcmp((dirst->d_name)+d_name_len-suf_len, *suf)
745
== 0)){
746
if(debug){
747
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
748
" with bad suffix %s\n", dirst->d_name, *suf);
749
}
750
bad_name = true;
751
break;
752
}
753
}
754
755
if(bad_name){
756
continue;
757
}
758
}
759
760
char *filename;
761
if(plugindir == NULL){
762
ret = asprintf(&filename, PDIR "/%s", dirst->d_name);
763
} else {
764
ret = asprintf(&filename, "%s/%s", plugindir, dirst->d_name);
765
}
766
if(ret < 0){
767
perror("asprintf");
959
for(int i = 0; i < numplugins; i++){
960
961
int plugin_fd = openat(dir_fd, direntries[i]->d_name, O_RDONLY);
962
if(plugin_fd == -1){
963
error(0, errno, "Could not open plugin");
964
free(direntries[i]);
768
965
continue;
769
966
}
770
771
ret = stat(filename, &st);
967
ret = (int)TEMP_FAILURE_RETRY(fstat(plugin_fd, &st));
772
968
if(ret == -1){
773
perror("stat");
774
free(filename);
969
error(0, errno, "stat");
970
close(plugin_fd);
971
free(direntries[i]);
775
972
continue;
776
973
}
777
974
778
975
/* Ignore non-executable files */
779
if(not S_ISREG(st.st_mode) or (access(filename, X_OK) != 0)){
976
if(not S_ISREG(st.st_mode)
977
or (TEMP_FAILURE_RETRY(faccessat(dir_fd, direntries[i]->d_name,
978
X_OK, 0)) != 0)){
780
979
if(debug){
781
fprintf(stderr, "Ignoring plugin dir entry \"%s\""
782
" with bad type or mode\n", filename);
980
fprintf(stderr, "Ignoring plugin dir entry \"%s/%s\""
981
" with bad type or mode\n",
982
plugindir != NULL ? plugindir : PDIR,
983
direntries[i]->d_name);
783
984
}
784
free(filename);
985
close(plugin_fd);
986
free(direntries[i]);
785
987
continue;
786
988
}
787
989
788
plugin *p = getplugin(dirst->d_name);
990
plugin *p = getplugin(direntries[i]->d_name);
789
991
if(p == NULL){
790
perror("getplugin");
791
free(filename);
992
error(0, errno, "getplugin");
993
close(plugin_fd);
994
free(direntries[i]);
792
995
continue;
793
996
}
794
997
if(p->disabled){
795
998
if(debug){
796
999
fprintf(stderr, "Ignoring disabled plugin \"%s\"\n",
797
dirst->d_name);
1000
direntries[i]->d_name);
798
1001
}
799
free(filename);
1002
close(plugin_fd);
1003
free(direntries[i]);
800
1004
continue;
801
1005
}
802
1006
{
805
1009
if(g != NULL){
806
1010
for(char **a = g->argv + 1; *a != NULL; a++){
807
1011
if(not add_argument(p, *a)){
808
perror("add_argument");
1012
error(0, errno, "add_argument");
809
1013
}
810
1014
}
811
1015
/* Add global environment variables */
812
1016
for(char **e = g->environ; *e != NULL; e++){
813
1017
if(not add_environment(p, *e, false)){
814
perror("add_environment");
1018
error(0, errno, "add_environment");
815
1019
}
816
1020
}
817
1021
}
818
1022
}
819
/* If this plugin has any environment variables, we will call
820
using execve and need to duplicate the environment from this
821
process, too. */
1023
/* If this plugin has any environment variables, we need to
1024
duplicate the environment from this process, too. */
822
1025
if(p->environ[0] != NULL){
823
1026
for(char **e = environ; *e != NULL; e++){
824
1027
if(not add_environment(p, *e, false)){
825
perror("add_environment");
1028
error(0, errno, "add_environment");
826
1029
}
827
1030
}
828
1031
}
829
1032
830
1033
int pipefd[2];
831
ret = pipe(pipefd);
1034
#ifndef O_CLOEXEC
1035
ret = (int)TEMP_FAILURE_RETRY(pipe(pipefd));
1036
#else /* O_CLOEXEC */
1037
ret = (int)TEMP_FAILURE_RETRY(pipe2(pipefd, O_CLOEXEC));
1038
#endif /* O_CLOEXEC */
832
1039
if(ret == -1){
833
perror("pipe");
834
exitstatus = EXIT_FAILURE;
835
goto fallback;
836
}
1040
error(0, errno, "pipe");
1041
exitstatus = EX_OSERR;
1042
free(direntries[i]);
1043
goto fallback;
1044
}
1045
if(pipefd[0] >= FD_SETSIZE){
1046
fprintf(stderr, "pipe()[0] (%d) >= FD_SETSIZE (%d)", pipefd[0],
1047
FD_SETSIZE);
1048
close(pipefd[0]);
1049
close(pipefd[1]);
1050
exitstatus = EX_OSERR;
1051
free(direntries[i]);
1052
goto fallback;
1053
}
1054
#ifndef O_CLOEXEC
837
1055
/* Ask OS to automatic close the pipe on exec */
838
1056
ret = set_cloexec_flag(pipefd[0]);
839
1057
if(ret < 0){
840
perror("set_cloexec_flag");
841
exitstatus = EXIT_FAILURE;
1058
error(0, errno, "set_cloexec_flag");
1059
close(pipefd[0]);
1060
close(pipefd[1]);
1061
exitstatus = EX_OSERR;
1062
free(direntries[i]);
842
1063
goto fallback;
843
1064
}
844
1065
ret = set_cloexec_flag(pipefd[1]);
845
1066
if(ret < 0){
846
perror("set_cloexec_flag");
847
exitstatus = EXIT_FAILURE;
1067
error(0, errno, "set_cloexec_flag");
1068
close(pipefd[0]);
1069
close(pipefd[1]);
1070
exitstatus = EX_OSERR;
1071
free(direntries[i]);
848
1072
goto fallback;
849
1073
}
1074
#endif /* not O_CLOEXEC */
850
1075
/* Block SIGCHLD until process is safely in process list */
851
ret = sigprocmask(SIG_BLOCK, &sigchld_action.sa_mask, NULL);
1076
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_BLOCK,
1077
&sigchld_action.sa_mask,
1078
NULL));
852
1079
if(ret < 0){
853
perror("sigprocmask");
854
exitstatus = EXIT_FAILURE;
1080
error(0, errno, "sigprocmask");
1081
exitstatus = EX_OSERR;
1082
free(direntries[i]);
855
1083
goto fallback;
856
1084
}
857
1085
/* Starting a new process to be watched */
858
pid_t pid = fork();
1086
pid_t pid;
1087
do {
1088
pid = fork();
1089
} while(pid == -1 and errno == EINTR);
859
1090
if(pid == -1){
860
perror("fork");
861
exitstatus = EXIT_FAILURE;
1091
error(0, errno, "fork");
1092
TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1093
&sigchld_action.sa_mask, NULL));
1094
close(pipefd[0]);
1095
close(pipefd[1]);
1096
exitstatus = EX_OSERR;
1097
free(direntries[i]);
862
1098
goto fallback;
863
1099
}
864
1100
if(pid == 0){
865
1101
/* this is the child process */
866
1102
ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
867
1103
if(ret < 0){
868
perror("sigaction");
869
_exit(EXIT_FAILURE);
1104
error(0, errno, "sigaction");
1105
_exit(EX_OSERR);
870
1106
}
871
1107
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
872
1108
if(ret < 0){
873
perror("sigprocmask");
874
_exit(EXIT_FAILURE);
1109
error(0, errno, "sigprocmask");
1110
_exit(EX_OSERR);
875
1111
}
876
1112
877
1113
ret = dup2(pipefd[1], STDOUT_FILENO); /* replace our stdout */
878
1114
if(ret == -1){
879
perror("dup2");
880
_exit(EXIT_FAILURE);
1115
error(0, errno, "dup2");
1116
_exit(EX_OSERR);
881
1117
}
882
1118
883
if(dirfd(dir) < 0){
884
/* If dir has no file descriptor, we could not set FD_CLOEXEC
885
above and must now close it manually here. */
886
closedir(dir);
887
}
888
if(p->environ[0] == NULL){
889
if(execv(filename, p->argv) < 0){
890
perror("execv");
891
_exit(EXIT_FAILURE);
892
}
893
} else {
894
if(execve(filename, p->argv, p->environ) < 0){
895
perror("execve");
896
_exit(EXIT_FAILURE);
897
}
1119
if(fexecve(plugin_fd, p->argv,
1120
(p->environ[0] != NULL) ? p->environ : environ) < 0){
1121
error(0, errno, "fexecve for %s/%s",
1122
plugindir != NULL ? plugindir : PDIR,
1123
direntries[i]->d_name);
1124
_exit(EX_OSERR);
898
1125
}
899
1126
/* no return */
900
1127
}
901
1128
/* Parent process */
902
1129
close(pipefd[1]); /* Close unused write end of pipe */
903
free(filename);
904
plugin *new_plugin = getplugin(dirst->d_name);
1130
close(plugin_fd);
1131
plugin *new_plugin = getplugin(direntries[i]->d_name);
905
1132
if(new_plugin == NULL){
906
perror("getplugin");
907
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
1133
error(0, errno, "getplugin");
1134
ret = (int)(TEMP_FAILURE_RETRY
1135
(sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask,
1136
NULL)));
908
1137
if(ret < 0){
909
perror("sigprocmask");
1138
error(0, errno, "sigprocmask");
910
1139
}
911
exitstatus = EXIT_FAILURE;
1140
exitstatus = EX_OSERR;
1141
free(direntries[i]);
912
1142
goto fallback;
913
1143
}
1144
free(direntries[i]);
914
1145
915
1146
new_plugin->pid = pid;
916
1147
new_plugin->fd = pipefd[0];
917
1148
1149
if(debug){
1150
fprintf(stderr, "Plugin %s started (PID %" PRIdMAX ")\n",
1151
new_plugin->name, (intmax_t) (new_plugin->pid));
1152
}
1153
918
1154
/* Unblock SIGCHLD so signal handler can be run if this process
919
1155
has already completed */
920
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
1156
ret = (int)TEMP_FAILURE_RETRY(sigprocmask(SIG_UNBLOCK,
1157
&sigchld_action.sa_mask,
1158
NULL));
921
1159
if(ret < 0){
922
perror("sigprocmask");
923
exitstatus = EXIT_FAILURE;
1160
error(0, errno, "sigprocmask");
1161
exitstatus = EX_OSERR;
924
1162
goto fallback;
925
1163
}
926
1164
931
1169
}
932
1170
}
933
1171
934
closedir(dir);
935
dir = NULL;
1172
free(direntries);
1173
direntries = NULL;
1174
close(dir_fd);
1175
dir_fd = -1;
936
1176
free_plugin(getplugin(NULL));
937
1177
938
1178
for(plugin *p = plugin_list; p != NULL; p = p->next){
950
1190
while(plugin_list){
951
1191
fd_set rfds = rfds_all;
952
1192
int select_ret = select(maxfd+1, &rfds, NULL, NULL, NULL);
953
if(select_ret == -1){
954
perror("select");
955
exitstatus = EXIT_FAILURE;
1193
if(select_ret == -1 and errno != EINTR){
1194
error(0, errno, "select");
1195
exitstatus = EX_OSERR;
956
1196
goto fallback;
957
1197
}
958
1198
/* OK, now either a process completed, or something can be read
973
1213
WEXITSTATUS(proc->status));
974
1214
} else if(WIFSIGNALED(proc->status)){
975
1215
fprintf(stderr, "Plugin %s [%" PRIdMAX "] killed by"
976
" signal %d\n", proc->name,
1216
" signal %d: %s\n", proc->name,
977
1217
(intmax_t) (proc->pid),
978
WTERMSIG(proc->status));
979
} else if(WCOREDUMP(proc->status)){
980
fprintf(stderr, "Plugin %s [%" PRIdMAX "] dumped"
981
" core\n", proc->name, (intmax_t) (proc->pid));
1218
WTERMSIG(proc->status),
1219
strsignal(WTERMSIG(proc->status)));
982
1220
}
983
1221
}
984
1222
986
1224
FD_CLR(proc->fd, &rfds_all);
987
1225
988
1226
/* Block signal while modifying process_list */
989
ret = sigprocmask(SIG_BLOCK, &sigchld_action.sa_mask, NULL);
1227
ret = (int)TEMP_FAILURE_RETRY(sigprocmask
1228
(SIG_BLOCK,
1229
&sigchld_action.sa_mask,
1230
NULL));
990
1231
if(ret < 0){
991
perror("sigprocmask");
992
exitstatus = EXIT_FAILURE;
1232
error(0, errno, "sigprocmask");
1233
exitstatus = EX_OSERR;
993
1234
goto fallback;
994
1235
}
995
1236
998
1239
proc = next_plugin;
999
1240
1000
1241
/* We are done modifying process list, so unblock signal */
1001
ret = sigprocmask(SIG_UNBLOCK, &sigchld_action.sa_mask,
1002
NULL);
1242
ret = (int)(TEMP_FAILURE_RETRY
1243
(sigprocmask(SIG_UNBLOCK,
1244
&sigchld_action.sa_mask, NULL)));
1003
1245
if(ret < 0){
1004
perror("sigprocmask");
1005
exitstatus = EXIT_FAILURE;
1246
error(0, errno, "sigprocmask");
1247
exitstatus = EX_OSERR;
1006
1248
goto fallback;
1007
1249
}
1008
1250
1018
1260
bool bret = print_out_password(proc->buffer,
1019
1261
proc->buffer_length);
1020
1262
if(not bret){
1021
perror("print_out_password");
1022
exitstatus = EXIT_FAILURE;
1263
error(0, errno, "print_out_password");
1264
exitstatus = EX_IOERR;
1023
1265
}
1024
1266
goto fallback;
1025
1267
}
1032
1274
}
1033
1275
/* Before reading, make the process' data buffer large enough */
1034
1276
if(proc->buffer_length + BUFFER_SIZE > proc->buffer_size){
1035
proc->buffer = realloc(proc->buffer, proc->buffer_size
1036
+ (size_t) BUFFER_SIZE);
1037
if(proc->buffer == NULL){
1038
perror("malloc");
1039
exitstatus = EXIT_FAILURE;
1277
char *new_buffer = realloc(proc->buffer, proc->buffer_size
1278
+ (size_t) BUFFER_SIZE);
1279
if(new_buffer == NULL){
1280
error(0, errno, "malloc");
1281
exitstatus = EX_OSERR;
1040
1282
goto fallback;
1041
1283
}
1284
proc->buffer = new_buffer;
1042
1285
proc->buffer_size += BUFFER_SIZE;
1043
1286
}
1044
1287
/* Read from the process */
1045
sret = read(proc->fd, proc->buffer + proc->buffer_length,
1046
BUFFER_SIZE);
1288
sret = TEMP_FAILURE_RETRY(read(proc->fd,
1289
proc->buffer
1290
+ proc->buffer_length,
1291
BUFFER_SIZE));
1047
1292
if(sret < 0){
1048
1293
/* Read error from this process; ignore the error */
1049
1294
proc = proc->next;
1061
1306
1062
1307
fallback:
1063
1308
1064
if(plugin_list == NULL or exitstatus != EXIT_SUCCESS){
1309
if(plugin_list == NULL or (exitstatus != EXIT_SUCCESS
1310
and exitstatus != EX_OK)){
1065
1311
/* Fallback if all plugins failed, none are found or an error
1066
1312
occured */
1067
1313
bool bret;
1075
1321
}
1076
1322
bret = print_out_password(passwordbuffer, len);
1077
1323
if(not bret){
1078
perror("print_out_password");
1079
exitstatus = EXIT_FAILURE;
1324
error(0, errno, "print_out_password");
1325
exitstatus = EX_IOERR;
1080
1326
}
1081
1327
}
1082
1328
1083
1329
/* Restore old signal handler */
1084
1330
ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
1085
1331
if(ret == -1){
1086
perror("sigaction");
1087
exitstatus = EXIT_FAILURE;
1332
error(0, errno, "sigaction");
1333
exitstatus = EX_OSERR;
1088
1334
}
1089
1335
1090
1336
if(custom_argv != NULL){
1094
1340
free(custom_argv);
1095
1341
}
1096
1342
1097
if(dir != NULL){
1098
closedir(dir);
1343
free(direntries);
1344
1345
if(dir_fd != -1){
1346
close(dir_fd);
1099
1347
}
1100
1348
1101
1349
/* Kill the processes */
1105
1353
ret = kill(p->pid, SIGTERM);
1106
1354
if(ret == -1 and errno != ESRCH){
1107
1355
/* Set-uid proccesses might not get closed */
1108
perror("kill");
1356
error(0, errno, "kill");
1109
1357
}
1110
1358
}
1111
1359
}
1112
1360
1113
1361
/* Wait for any remaining child processes to terminate */
1114
do{
1362
do {
1115
1363
ret = wait(NULL);
1116
1364
} while(ret >= 0);
1117
1365
if(errno != ECHILD){
1118
perror("wait");
1366
error(0, errno, "wait");
1119
1367
}
1120
1368
1121
1369
free_plugin_list();
1122
1370
1123
1371
free(plugindir);
1372
free(pluginhelperdir);
1124
1373
free(argfile);
1125
1374
1126
1375
return exitstatus;
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0