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- Committer: Teddy Hogeborn
- Date: 2011-07-25 18:49:17 UTC
- Revision ID: teddy@fukt.bsnet.se-20110725184917-m9eov06ex6vn9877
* mandos-monitor (MandosClientPropertyCache): Save match tag for
PropertyChanged signal.
(MandosClientPropertyCache.delete): New; unregister signal.
(MandosClientWidget.__init__): Save matches for signals.
(MandosClientWidget): Unregister signals.
(UserInterface.find_and_remove_client): Log message when removing
a nonexisting client. Call
client.delete() instead of
self.remove_client().
PropertyChanged signal.
(MandosClientPropertyCache.delete): New; unregister signal.
(MandosClientWidget.__init__): Save matches for signals.
(MandosClientWidget): Unregister signals.
(UserInterface.find_and_remove_client): Log message when removing
a nonexisting client. Call
client.delete() instead of
self.remove_client().
- files removed:
- debian/mandos-client.examples
- network-hooks.d
- files modified:
- .bzrignore
added
removed
plugins.d/mandos-client.c
9
9
* "browse_callback", and parts of "main".
10
10
*
11
11
* Everything else is
12
* Copyright © 2008-2012 Teddy Hogeborn
13
* Copyright © 2008-2012 Björn Påhlsson
12
* Copyright © 2008-2011 Teddy Hogeborn
13
* Copyright © 2008-2011 Björn Påhlsson
14
14
*
15
15
* This program is free software: you can redistribute it and/or
16
16
* modify it under the terms of the GNU General Public License as
26
26
* along with this program. If not, see
27
27
* <http://www.gnu.org/licenses/>.
28
28
*
29
* Contact the authors at <mandos@recompile.se>.
29
* Contact the authors at <mandos@fukt.bsnet.se>.
30
30
*/
31
31
32
32
/* Needed by GPGME, specifically gpgme_data_seek() */
41
41
42
42
#include <stdio.h> /* fprintf(), stderr, fwrite(),
43
43
stdout, ferror(), remove() */
44
#include <stdint.h> /* uint16_t, uint32_t, intptr_t */
44
#include <stdint.h> /* uint16_t, uint32_t */
45
45
#include <stddef.h> /* NULL, size_t, ssize_t */
46
46
#include <stdlib.h> /* free(), EXIT_SUCCESS, srand(),
47
47
strtof(), abort() */
53
53
sockaddr_in6, PF_INET6,
54
54
SOCK_STREAM, uid_t, gid_t, open(),
55
55
opendir(), DIR */
56
#include <sys/stat.h> /* open(), S_ISREG */
56
#include <sys/stat.h> /* open() */
57
57
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
58
58
inet_pton(), connect() */
59
59
#include <fcntl.h> /* open() */
73
73
*/
74
74
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
75
75
getuid(), getgid(), seteuid(),
76
setgid(), pause(), _exit() */
76
setgid(), pause() */
77
77
#include <arpa/inet.h> /* inet_pton(), htons, inet_ntop() */
78
78
#include <iso646.h> /* not, or, and */
79
79
#include <argp.h> /* struct argp_option, error_t, struct
85
85
raise() */
86
86
#include <sysexits.h> /* EX_OSERR, EX_USAGE, EX_UNAVAILABLE,
87
87
EX_NOHOST, EX_IOERR, EX_PROTOCOL */
88
#include <sys/wait.h> /* waitpid(), WIFEXITED(),
89
WEXITSTATUS(), WTERMSIG() */
90
#include <grp.h> /* setgroups() */
91
88
92
89
#ifdef __linux__
93
90
#include <sys/klog.h> /* klogctl() */
111
108
init_gnutls_session(),
112
109
GNUTLS_* */
113
110
#include <gnutls/openpgp.h>
114
/* gnutls_certificate_set_openpgp_key_file(),
115
GNUTLS_OPENPGP_FMT_BASE64 */
111
/* gnutls_certificate_set_openpgp_key_file(),
112
GNUTLS_OPENPGP_FMT_BASE64 */
116
113
117
114
/* GPGME */
118
115
#include <gpgme.h> /* All GPGME types, constants and
126
123
#define PATHDIR "/conf/conf.d/mandos"
127
124
#define SECKEY "seckey.txt"
128
125
#define PUBKEY "pubkey.txt"
129
#define HOOKDIR "/lib/mandos/network-hooks.d"
130
126
131
127
bool debug = false;
132
128
static const char mandos_protocol_version[] = "1";
133
129
const char *argp_program_version = "mandos-client " VERSION;
134
const char *argp_program_bug_address = "<mandos@recompile.se>";
130
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
135
131
static const char sys_class_net[] = "/sys/class/net";
136
132
char *connect_to = NULL;
137
const char *hookdir = HOOKDIR;
138
uid_t uid = 65534;
139
gid_t gid = 65534;
140
133
141
134
/* Doubly linked list that need to be circularly linked when used */
142
135
typedef struct server{
172
165
173
166
/* Function to use when printing errors */
174
167
void perror_plus(const char *print_text){
175
int e = errno;
176
168
fprintf(stderr, "Mandos plugin %s: ",
177
169
program_invocation_short_name);
178
errno = e;
179
170
perror(print_text);
180
171
}
181
172
182
__attribute__((format (gnu_printf, 2, 3)))
183
int fprintf_plus(FILE *stream, const char *format, ...){
184
va_list ap;
185
va_start (ap, format);
186
187
TEMP_FAILURE_RETRY(fprintf(stream, "Mandos plugin %s: ",
188
program_invocation_short_name));
189
return TEMP_FAILURE_RETRY(vfprintf(stream, format, ap));
190
}
191
192
173
/*
193
174
* Make additional room in "buffer" for at least BUFFER_SIZE more
194
175
* bytes. "buffer_capacity" is how much is currently allocated,
195
176
* "buffer_length" is how much is already used.
196
177
*/
197
178
size_t incbuffer(char **buffer, size_t buffer_length,
198
size_t buffer_capacity){
179
size_t buffer_capacity){
199
180
if(buffer_length + BUFFER_SIZE > buffer_capacity){
200
181
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
201
182
if(buffer == NULL){
206
187
return buffer_capacity;
207
188
}
208
189
209
/* Add server to set of servers to retry periodically */
210
bool add_server(const char *ip, uint16_t port, AvahiIfIndex if_index,
211
int af){
190
int add_server(const char *ip, uint16_t port,
191
AvahiIfIndex if_index,
192
int af){
212
193
int ret;
213
194
server *new_server = malloc(sizeof(server));
214
195
if(new_server == NULL){
215
196
perror_plus("malloc");
216
return false;
197
return -1;
217
198
}
218
199
*new_server = (server){ .ip = strdup(ip),
219
.port = port,
220
.if_index = if_index,
221
.af = af };
200
.port = port,
201
.if_index = if_index,
202
.af = af };
222
203
if(new_server->ip == NULL){
223
204
perror_plus("strdup");
224
return false;
205
return -1;
225
206
}
226
/* Special case of first server */
207
/* unique case of first server */
227
208
if (mc.current_server == NULL){
228
209
new_server->next = new_server;
229
210
new_server->prev = new_server;
230
211
mc.current_server = new_server;
231
/* Place the new server last in the list */
212
/* Placing the new server last in the list */
232
213
} else {
233
214
new_server->next = mc.current_server;
234
215
new_server->prev = mc.current_server->prev;
238
219
ret = clock_gettime(CLOCK_MONOTONIC, &mc.current_server->last_seen);
239
220
if(ret == -1){
240
221
perror_plus("clock_gettime");
241
return false;
222
return -1;
242
223
}
243
return true;
224
return 0;
244
225
}
245
226
246
227
/*
247
228
* Initialize GPGME.
248
229
*/
249
static bool init_gpgme(const char *seckey, const char *pubkey,
250
const char *tempdir){
230
static bool init_gpgme(const char *seckey,
231
const char *pubkey, const char *tempdir){
251
232
gpgme_error_t rc;
252
233
gpgme_engine_info_t engine_info;
253
234
268
249
269
250
rc = gpgme_data_new_from_fd(&pgp_data, fd);
270
251
if(rc != GPG_ERR_NO_ERROR){
271
fprintf_plus(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
272
gpgme_strsource(rc), gpgme_strerror(rc));
252
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
253
gpgme_strsource(rc), gpgme_strerror(rc));
273
254
return false;
274
255
}
275
256
276
257
rc = gpgme_op_import(mc.ctx, pgp_data);
277
258
if(rc != GPG_ERR_NO_ERROR){
278
fprintf_plus(stderr, "bad gpgme_op_import: %s: %s\n",
279
gpgme_strsource(rc), gpgme_strerror(rc));
259
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
260
gpgme_strsource(rc), gpgme_strerror(rc));
280
261
return false;
281
262
}
282
263
289
270
}
290
271
291
272
if(debug){
292
fprintf_plus(stderr, "Initializing GPGME\n");
273
fprintf(stderr, "Initializing GPGME\n");
293
274
}
294
275
295
276
/* Init GPGME */
296
277
gpgme_check_version(NULL);
297
278
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
298
279
if(rc != GPG_ERR_NO_ERROR){
299
fprintf_plus(stderr, "bad gpgme_engine_check_version: %s: %s\n",
300
gpgme_strsource(rc), gpgme_strerror(rc));
280
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
281
gpgme_strsource(rc), gpgme_strerror(rc));
301
282
return false;
302
283
}
303
284
304
/* Set GPGME home directory for the OpenPGP engine only */
285
/* Set GPGME home directory for the OpenPGP engine only */
305
286
rc = gpgme_get_engine_info(&engine_info);
306
287
if(rc != GPG_ERR_NO_ERROR){
307
fprintf_plus(stderr, "bad gpgme_get_engine_info: %s: %s\n",
308
gpgme_strsource(rc), gpgme_strerror(rc));
288
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
289
gpgme_strsource(rc), gpgme_strerror(rc));
309
290
return false;
310
291
}
311
292
while(engine_info != NULL){
317
298
engine_info = engine_info->next;
318
299
}
319
300
if(engine_info == NULL){
320
fprintf_plus(stderr, "Could not set GPGME home dir to %s\n",
321
tempdir);
301
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
322
302
return false;
323
303
}
324
304
325
305
/* Create new GPGME "context" */
326
306
rc = gpgme_new(&(mc.ctx));
327
307
if(rc != GPG_ERR_NO_ERROR){
328
fprintf_plus(stderr, "Mandos plugin mandos-client: "
329
"bad gpgme_new: %s: %s\n", gpgme_strsource(rc),
330
gpgme_strerror(rc));
308
fprintf(stderr, "bad gpgme_new: %s: %s\n",
309
gpgme_strsource(rc), gpgme_strerror(rc));
331
310
return false;
332
311
}
333
312
352
331
ssize_t plaintext_length = 0;
353
332
354
333
if(debug){
355
fprintf_plus(stderr, "Trying to decrypt OpenPGP data\n");
334
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
356
335
}
357
336
358
337
/* Create new GPGME data buffer from memory cryptotext */
359
338
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
360
339
0);
361
340
if(rc != GPG_ERR_NO_ERROR){
362
fprintf_plus(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
363
gpgme_strsource(rc), gpgme_strerror(rc));
341
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
342
gpgme_strsource(rc), gpgme_strerror(rc));
364
343
return -1;
365
344
}
366
345
367
346
/* Create new empty GPGME data buffer for the plaintext */
368
347
rc = gpgme_data_new(&dh_plain);
369
348
if(rc != GPG_ERR_NO_ERROR){
370
fprintf_plus(stderr, "Mandos plugin mandos-client: "
371
"bad gpgme_data_new: %s: %s\n",
372
gpgme_strsource(rc), gpgme_strerror(rc));
349
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
350
gpgme_strsource(rc), gpgme_strerror(rc));
373
351
gpgme_data_release(dh_crypto);
374
352
return -1;
375
353
}
378
356
data buffer */
379
357
rc = gpgme_op_decrypt(mc.ctx, dh_crypto, dh_plain);
380
358
if(rc != GPG_ERR_NO_ERROR){
381
fprintf_plus(stderr, "bad gpgme_op_decrypt: %s: %s\n",
382
gpgme_strsource(rc), gpgme_strerror(rc));
359
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
360
gpgme_strsource(rc), gpgme_strerror(rc));
383
361
plaintext_length = -1;
384
362
if(debug){
385
363
gpgme_decrypt_result_t result;
386
364
result = gpgme_op_decrypt_result(mc.ctx);
387
365
if(result == NULL){
388
fprintf_plus(stderr, "gpgme_op_decrypt_result failed\n");
366
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
389
367
} else {
390
fprintf_plus(stderr, "Unsupported algorithm: %s\n",
391
result->unsupported_algorithm);
392
fprintf_plus(stderr, "Wrong key usage: %u\n",
393
result->wrong_key_usage);
368
fprintf(stderr, "Unsupported algorithm: %s\n",
369
result->unsupported_algorithm);
370
fprintf(stderr, "Wrong key usage: %u\n",
371
result->wrong_key_usage);
394
372
if(result->file_name != NULL){
395
fprintf_plus(stderr, "File name: %s\n", result->file_name);
373
fprintf(stderr, "File name: %s\n", result->file_name);
396
374
}
397
375
gpgme_recipient_t recipient;
398
376
recipient = result->recipients;
399
377
while(recipient != NULL){
400
fprintf_plus(stderr, "Public key algorithm: %s\n",
401
gpgme_pubkey_algo_name
402
(recipient->pubkey_algo));
403
fprintf_plus(stderr, "Key ID: %s\n", recipient->keyid);
404
fprintf_plus(stderr, "Secret key available: %s\n",
405
recipient->status == GPG_ERR_NO_SECKEY
406
? "No" : "Yes");
378
fprintf(stderr, "Public key algorithm: %s\n",
379
gpgme_pubkey_algo_name(recipient->pubkey_algo));
380
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
381
fprintf(stderr, "Secret key available: %s\n",
382
recipient->status == GPG_ERR_NO_SECKEY
383
? "No" : "Yes");
407
384
recipient = recipient->next;
408
385
}
409
386
}
412
389
}
413
390
414
391
if(debug){
415
fprintf_plus(stderr, "Decryption of OpenPGP data succeeded\n");
392
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
416
393
}
417
394
418
395
/* Seek back to the beginning of the GPGME plaintext data buffer */
425
402
*plaintext = NULL;
426
403
while(true){
427
404
plaintext_capacity = incbuffer(plaintext,
428
(size_t)plaintext_length,
429
plaintext_capacity);
405
(size_t)plaintext_length,
406
plaintext_capacity);
430
407
if(plaintext_capacity == 0){
431
perror_plus("incbuffer");
432
plaintext_length = -1;
433
goto decrypt_end;
408
perror_plus("incbuffer");
409
plaintext_length = -1;
410
goto decrypt_end;
434
411
}
435
412
436
413
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
449
426
}
450
427
451
428
if(debug){
452
fprintf_plus(stderr, "Decrypted password is: ");
429
fprintf(stderr, "Decrypted password is: ");
453
430
for(ssize_t i = 0; i < plaintext_length; i++){
454
431
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
455
432
}
477
454
/* GnuTLS log function callback */
478
455
static void debuggnutls(__attribute__((unused)) int level,
479
456
const char* string){
480
fprintf_plus(stderr, "GnuTLS: %s", string);
457
fprintf(stderr, "GnuTLS: %s", string);
481
458
}
482
459
483
460
static int init_gnutls_global(const char *pubkeyfilename,
485
462
int ret;
486
463
487
464
if(debug){
488
fprintf_plus(stderr, "Initializing GnuTLS\n");
465
fprintf(stderr, "Initializing GnuTLS\n");
489
466
}
490
467
491
468
ret = gnutls_global_init();
492
469
if(ret != GNUTLS_E_SUCCESS){
493
fprintf_plus(stderr, "GnuTLS global_init: %s\n",
494
safer_gnutls_strerror(ret));
470
fprintf(stderr, "GnuTLS global_init: %s\n",
471
safer_gnutls_strerror(ret));
495
472
return -1;
496
473
}
497
474
506
483
/* OpenPGP credentials */
507
484
ret = gnutls_certificate_allocate_credentials(&mc.cred);
508
485
if(ret != GNUTLS_E_SUCCESS){
509
fprintf_plus(stderr, "GnuTLS memory error: %s\n",
510
safer_gnutls_strerror(ret));
486
fprintf(stderr, "GnuTLS memory error: %s\n",
487
safer_gnutls_strerror(ret));
511
488
gnutls_global_deinit();
512
489
return -1;
513
490
}
514
491
515
492
if(debug){
516
fprintf_plus(stderr, "Attempting to use OpenPGP public key %s and"
517
" secret key %s as GnuTLS credentials\n",
518
pubkeyfilename,
519
seckeyfilename);
493
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
494
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
495
seckeyfilename);
520
496
}
521
497
522
498
ret = gnutls_certificate_set_openpgp_key_file
523
499
(mc.cred, pubkeyfilename, seckeyfilename,
524
500
GNUTLS_OPENPGP_FMT_BASE64);
525
501
if(ret != GNUTLS_E_SUCCESS){
526
fprintf_plus(stderr,
527
"Error[%d] while reading the OpenPGP key pair ('%s',"
528
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
529
fprintf_plus(stderr, "The GnuTLS error is: %s\n",
530
safer_gnutls_strerror(ret));
502
fprintf(stderr,
503
"Error[%d] while reading the OpenPGP key pair ('%s',"
504
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
505
fprintf(stderr, "The GnuTLS error is: %s\n",
506
safer_gnutls_strerror(ret));
531
507
goto globalfail;
532
508
}
533
509
534
510
/* GnuTLS server initialization */
535
511
ret = gnutls_dh_params_init(&mc.dh_params);
536
512
if(ret != GNUTLS_E_SUCCESS){
537
fprintf_plus(stderr, "Error in GnuTLS DH parameter"
538
" initialization: %s\n",
539
safer_gnutls_strerror(ret));
513
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
514
" %s\n", safer_gnutls_strerror(ret));
540
515
goto globalfail;
541
516
}
542
517
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
543
518
if(ret != GNUTLS_E_SUCCESS){
544
fprintf_plus(stderr, "Error in GnuTLS prime generation: %s\n",
545
safer_gnutls_strerror(ret));
519
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
520
safer_gnutls_strerror(ret));
546
521
goto globalfail;
547
522
}
548
523
568
543
}
569
544
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
570
545
if(ret != GNUTLS_E_SUCCESS){
571
fprintf_plus(stderr,
572
"Error in GnuTLS session initialization: %s\n",
573
safer_gnutls_strerror(ret));
546
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
547
safer_gnutls_strerror(ret));
574
548
}
575
549
576
550
{
583
557
}
584
558
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
585
559
if(ret != GNUTLS_E_SUCCESS){
586
fprintf_plus(stderr, "Syntax error at: %s\n", err);
587
fprintf_plus(stderr, "GnuTLS error: %s\n",
588
safer_gnutls_strerror(ret));
560
fprintf(stderr, "Syntax error at: %s\n", err);
561
fprintf(stderr, "GnuTLS error: %s\n",
562
safer_gnutls_strerror(ret));
589
563
gnutls_deinit(*session);
590
564
return -1;
591
565
}
600
574
}
601
575
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
602
576
if(ret != GNUTLS_E_SUCCESS){
603
fprintf_plus(stderr, "Error setting GnuTLS credentials: %s\n",
604
safer_gnutls_strerror(ret));
577
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
578
safer_gnutls_strerror(ret));
605
579
gnutls_deinit(*session);
606
580
return -1;
607
581
}
652
626
pf = PF_INET;
653
627
break;
654
628
default:
655
fprintf_plus(stderr, "Bad address family: %d\n", af);
629
fprintf(stderr, "Bad address family: %d\n", af);
656
630
errno = EINVAL;
657
631
return -1;
658
632
}
663
637
}
664
638
665
639
if(debug){
666
fprintf_plus(stderr, "Setting up a TCP connection to %s, port %"
667
PRIu16 "\n", ip, port);
640
fprintf(stderr, "Setting up a TCP connection to %s, port %" PRIu16
641
"\n", ip, port);
668
642
}
669
643
670
644
tcp_sd = socket(pf, SOCK_STREAM, 0);
696
670
}
697
671
if(ret == 0){
698
672
int e = errno;
699
fprintf_plus(stderr, "Bad address: %s\n", ip);
673
fprintf(stderr, "Bad address: %s\n", ip);
700
674
errno = e;
701
675
goto mandos_end;
702
676
}
707
681
708
682
if(IN6_IS_ADDR_LINKLOCAL /* Spurious warnings from */
709
683
(&to.in6.sin6_addr)){ /* -Wstrict-aliasing=2 or lower and
710
-Wunreachable-code*/
684
-Wunreachable-code*/
711
685
if(if_index == AVAHI_IF_UNSPEC){
712
fprintf_plus(stderr, "An IPv6 link-local address is"
713
" incomplete without a network interface\n");
686
fprintf(stderr, "An IPv6 link-local address is incomplete"
687
" without a network interface\n");
714
688
errno = EINVAL;
715
689
goto mandos_end;
716
690
}
734
708
if(if_indextoname((unsigned int)if_index, interface) == NULL){
735
709
perror_plus("if_indextoname");
736
710
} else {
737
fprintf_plus(stderr, "Connection to: %s%%%s, port %" PRIu16
738
"\n", ip, interface, port);
711
fprintf(stderr, "Connection to: %s%%%s, port %" PRIu16 "\n",
712
ip, interface, port);
739
713
}
740
714
} else {
741
fprintf_plus(stderr, "Connection to: %s, port %" PRIu16 "\n",
742
ip, port);
715
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
716
port);
743
717
}
744
718
char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
745
719
INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
755
729
perror_plus("inet_ntop");
756
730
} else {
757
731
if(strcmp(addrstr, ip) != 0){
758
fprintf_plus(stderr, "Canonical address form: %s\n", addrstr);
732
fprintf(stderr, "Canonical address form: %s\n", addrstr);
759
733
}
760
734
}
761
735
}
789
763
while(true){
790
764
size_t out_size = strlen(out);
791
765
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
792
out_size - written));
766
out_size - written));
793
767
if(ret == -1){
794
768
int e = errno;
795
769
perror_plus("write");
815
789
}
816
790
817
791
if(debug){
818
fprintf_plus(stderr, "Establishing TLS session with %s\n", ip);
792
fprintf(stderr, "Establishing TLS session with %s\n", ip);
819
793
}
820
794
821
795
if(quit_now){
823
797
goto mandos_end;
824
798
}
825
799
826
/* This casting via intptr_t is to eliminate warning about casting
827
an int to a pointer type. This is exactly how the GnuTLS Guile
828
function "set-session-transport-fd!" does it. */
829
gnutls_transport_set_ptr(session,
830
(gnutls_transport_ptr_t)(intptr_t)tcp_sd);
800
/* Spurious warning from -Wint-to-pointer-cast */
801
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
831
802
832
803
if(quit_now){
833
804
errno = EINTR;
844
815
845
816
if(ret != GNUTLS_E_SUCCESS){
846
817
if(debug){
847
fprintf_plus(stderr, "*** GnuTLS Handshake failed ***\n");
818
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
848
819
gnutls_perror(ret);
849
820
}
850
821
errno = EPROTO;
854
825
/* Read OpenPGP packet that contains the wanted password */
855
826
856
827
if(debug){
857
fprintf_plus(stderr, "Retrieving OpenPGP encrypted password from"
858
" %s\n", ip);
828
fprintf(stderr, "Retrieving OpenPGP encrypted password from %s\n",
829
ip);
859
830
}
860
831
861
832
while(true){
866
837
}
867
838
868
839
buffer_capacity = incbuffer(&buffer, buffer_length,
869
buffer_capacity);
840
buffer_capacity);
870
841
if(buffer_capacity == 0){
871
842
int e = errno;
872
843
perror_plus("incbuffer");
899
870
}
900
871
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
901
872
if(ret < 0){
902
fprintf_plus(stderr, "*** GnuTLS Re-handshake failed "
903
"***\n");
873
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
904
874
gnutls_perror(ret);
905
875
errno = EPROTO;
906
876
goto mandos_end;
907
877
}
908
878
break;
909
879
default:
910
fprintf_plus(stderr, "Unknown error while reading data from"
911
" encrypted session with Mandos server\n");
880
fprintf(stderr, "Unknown error while reading data from"
881
" encrypted session with Mandos server\n");
912
882
gnutls_bye(session, GNUTLS_SHUT_RDWR);
913
883
errno = EIO;
914
884
goto mandos_end;
919
889
}
920
890
921
891
if(debug){
922
fprintf_plus(stderr, "Closing TLS session\n");
892
fprintf(stderr, "Closing TLS session\n");
923
893
}
924
894
925
895
if(quit_now){
937
907
938
908
if(buffer_length > 0){
939
909
ssize_t decrypted_buffer_size;
940
decrypted_buffer_size = pgp_packet_decrypt(buffer, buffer_length,
910
decrypted_buffer_size = pgp_packet_decrypt(buffer,
911
buffer_length,
941
912
&decrypted_buffer);
942
913
if(decrypted_buffer_size >= 0){
943
914
954
925
if(ret == 0 and ferror(stdout)){
955
926
int e = errno;
956
927
if(debug){
957
fprintf_plus(stderr, "Error writing encrypted data: %s\n",
958
strerror(errno));
928
fprintf(stderr, "Error writing encrypted data: %s\n",
929
strerror(errno));
959
930
}
960
931
errno = e;
961
932
goto mandos_end;
1018
989
switch(event){
1019
990
default:
1020
991
case AVAHI_RESOLVER_FAILURE:
1021
fprintf_plus(stderr, "(Avahi Resolver) Failed to resolve service "
1022
"'%s' of type '%s' in domain '%s': %s\n", name, type,
1023
domain,
1024
avahi_strerror(avahi_server_errno(mc.server)));
992
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
993
" of type '%s' in domain '%s': %s\n", name, type, domain,
994
avahi_strerror(avahi_server_errno(mc.server)));
1025
995
break;
1026
996
1027
997
case AVAHI_RESOLVER_FOUND:
1029
999
char ip[AVAHI_ADDRESS_STR_MAX];
1030
1000
avahi_address_snprint(ip, sizeof(ip), address);
1031
1001
if(debug){
1032
fprintf_plus(stderr, "Mandos server \"%s\" found on %s (%s, %"
1033
PRIdMAX ") on port %" PRIu16 "\n", name,
1034
host_name, ip, (intmax_t)interface, port);
1002
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
1003
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
1004
ip, (intmax_t)interface, port);
1035
1005
}
1036
1006
int ret = start_mandos_communication(ip, port, interface,
1037
1007
avahi_proto_to_af(proto));
1038
1008
if(ret == 0){
1039
1009
avahi_simple_poll_quit(mc.simple_poll);
1040
1010
} else {
1041
if(not add_server(ip, port, interface,
1042
avahi_proto_to_af(proto))){
1043
fprintf_plus(stderr, "Failed to add server \"%s\" to server"
1044
" list\n", name);
1045
}
1011
ret = add_server(ip, port, interface,
1012
avahi_proto_to_af(proto));
1046
1013
}
1047
1014
}
1048
1015
}
1072
1039
default:
1073
1040
case AVAHI_BROWSER_FAILURE:
1074
1041
1075
fprintf_plus(stderr, "(Avahi browser) %s\n",
1076
avahi_strerror(avahi_server_errno(mc.server)));
1042
fprintf(stderr, "(Avahi browser) %s\n",
1043
avahi_strerror(avahi_server_errno(mc.server)));
1077
1044
avahi_simple_poll_quit(mc.simple_poll);
1078
1045
return;
1079
1046
1086
1053
if(avahi_s_service_resolver_new(mc.server, interface, protocol,
1087
1054
name, type, domain, protocol, 0,
1088
1055
resolve_callback, NULL) == NULL)
1089
fprintf_plus(stderr, "Avahi: Failed to resolve service '%s':"
1090
" %s\n", name,
1091
avahi_strerror(avahi_server_errno(mc.server)));
1056
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
1057
name, avahi_strerror(avahi_server_errno(mc.server)));
1092
1058
break;
1093
1059
1094
1060
case AVAHI_BROWSER_REMOVE:
1097
1063
case AVAHI_BROWSER_ALL_FOR_NOW:
1098
1064
case AVAHI_BROWSER_CACHE_EXHAUSTED:
1099
1065
if(debug){
1100
fprintf_plus(stderr, "No Mandos server found, still"
1101
" searching...\n");
1066
fprintf(stderr, "No Mandos server found, still searching...\n");
1102
1067
}
1103
1068
break;
1104
1069
}
1119
1084
errno = old_errno;
1120
1085
}
1121
1086
1122
bool get_flags(const char *ifname, struct ifreq *ifr){
1123
int ret;
1124
1125
int s = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1126
if(s < 0){
1127
perror_plus("socket");
1128
return false;
1129
}
1130
strcpy(ifr->ifr_name, ifname);
1131
ret = ioctl(s, SIOCGIFFLAGS, ifr);
1132
if(ret == -1){
1087
/*
1088
* This function determines if a directory entry in /sys/class/net
1089
* corresponds to an acceptable network device.
1090
* (This function is passed to scandir(3) as a filter function.)
1091
*/
1092
int good_interface(const struct dirent *if_entry){
1093
ssize_t ssret;
1094
char *flagname = NULL;
1095
if(if_entry->d_name[0] == '.'){
1096
return 0;
1097
}
1098
int ret = asprintf(&flagname, "%s/%s/flags", sys_class_net,
1099
if_entry->d_name);
1100
if(ret < 0){
1101
perror_plus("asprintf");
1102
return 0;
1103
}
1104
int flags_fd = (int)TEMP_FAILURE_RETRY(open(flagname, O_RDONLY));
1105
if(flags_fd == -1){
1106
perror_plus("open");
1107
free(flagname);
1108
return 0;
1109
}
1110
free(flagname);
1111
typedef short ifreq_flags; /* ifreq.ifr_flags in netdevice(7) */
1112
/* read line from flags_fd */
1113
ssize_t to_read = 2+(sizeof(ifreq_flags)*2)+1; /* "0x1003\n" */
1114
char *flagstring = malloc((size_t)to_read+1); /* +1 for final \0 */
1115
flagstring[(size_t)to_read] = '\0';
1116
if(flagstring == NULL){
1117
perror_plus("malloc");
1118
close(flags_fd);
1119
return 0;
1120
}
1121
while(to_read > 0){
1122
ssret = (ssize_t)TEMP_FAILURE_RETRY(read(flags_fd, flagstring,
1123
(size_t)to_read));
1124
if(ssret == -1){
1125
perror_plus("read");
1126
free(flagstring);
1127
close(flags_fd);
1128
return 0;
1129
}
1130
to_read -= ssret;
1131
if(ssret == 0){
1132
break;
1133
}
1134
}
1135
close(flags_fd);
1136
intmax_t tmpmax;
1137
char *tmp;
1138
errno = 0;
1139
tmpmax = strtoimax(flagstring, &tmp, 0);
1140
if(errno != 0 or tmp == flagstring or (*tmp != '\0'
1141
and not (isspace(*tmp)))
1142
or tmpmax != (ifreq_flags)tmpmax){
1133
1143
if(debug){
1134
perror_plus("ioctl SIOCGIFFLAGS");
1144
fprintf(stderr, "Invalid flags \"%s\" for interface \"%s\"\n",
1145
flagstring, if_entry->d_name);
1135
1146
}
1136
return false;
1147
free(flagstring);
1148
return 0;
1137
1149
}
1138
return true;
1139
}
1140
1141
bool good_flags(const char *ifname, const struct ifreq *ifr){
1142
1150
free(flagstring);
1151
ifreq_flags flags = (ifreq_flags)tmpmax;
1143
1152
/* Reject the loopback device */
1144
if(ifr->ifr_flags & IFF_LOOPBACK){
1153
if(flags & IFF_LOOPBACK){
1145
1154
if(debug){
1146
fprintf_plus(stderr, "Rejecting loopback interface \"%s\"\n",
1147
ifname);
1155
fprintf(stderr, "Rejecting loopback interface \"%s\"\n",
1156
if_entry->d_name);
1148
1157
}
1149
return false;
1158
return 0;
1150
1159
}
1151
1160
/* Accept point-to-point devices only if connect_to is specified */
1152
if(connect_to != NULL and (ifr->ifr_flags & IFF_POINTOPOINT)){
1161
if(connect_to != NULL and (flags & IFF_POINTOPOINT)){
1153
1162
if(debug){
1154
fprintf_plus(stderr, "Accepting point-to-point interface"
1155
" \"%s\"\n", ifname);
1163
fprintf(stderr, "Accepting point-to-point interface \"%s\"\n",
1164
if_entry->d_name);
1156
1165
}
1157
return true;
1166
return 1;
1158
1167
}
1159
1168
/* Otherwise, reject non-broadcast-capable devices */
1160
if(not (ifr->ifr_flags & IFF_BROADCAST)){
1169
if(not (flags & IFF_BROADCAST)){
1161
1170
if(debug){
1162
fprintf_plus(stderr, "Rejecting non-broadcast interface"
1163
" \"%s\"\n", ifname);
1171
fprintf(stderr, "Rejecting non-broadcast interface \"%s\"\n",
1172
if_entry->d_name);
1164
1173
}
1165
return false;
1174
return 0;
1166
1175
}
1167
1176
/* Reject non-ARP interfaces (including dummy interfaces) */
1168
if(ifr->ifr_flags & IFF_NOARP){
1177
if(flags & IFF_NOARP){
1169
1178
if(debug){
1170
fprintf_plus(stderr, "Rejecting non-ARP interface \"%s\"\n",
1171
ifname);
1179
fprintf(stderr, "Rejecting non-ARP interface \"%s\"\n",
1180
if_entry->d_name);
1172
1181
}
1173
return false;
1182
return 0;
1174
1183
}
1175
1176
1184
/* Accept this device */
1177
1185
if(debug){
1178
fprintf_plus(stderr, "Interface \"%s\" is good\n", ifname);
1179
}
1180
return true;
1181
}
1182
1183
/*
1184
* This function determines if a directory entry in /sys/class/net
1185
* corresponds to an acceptable network device.
1186
* (This function is passed to scandir(3) as a filter function.)
1187
*/
1188
int good_interface(const struct dirent *if_entry){
1189
if(if_entry->d_name[0] == '.'){
1190
return 0;
1191
}
1192
1193
struct ifreq ifr;
1194
if(not get_flags(if_entry->d_name, &ifr)){
1195
if(debug){
1196
fprintf_plus(stderr, "Failed to get flags for interface "
1197
"\"%s\"\n", if_entry->d_name);
1198
}
1199
return 0;
1200
}
1201
1202
if(not good_flags(if_entry->d_name, &ifr)){
1203
return 0;
1204
}
1205
return 1;
1206
}
1207
1208
/*
1209
* This function determines if a directory entry in /sys/class/net
1210
* corresponds to an acceptable network device which is up.
1211
* (This function is passed to scandir(3) as a filter function.)
1212
*/
1213
int up_interface(const struct dirent *if_entry){
1214
if(if_entry->d_name[0] == '.'){
1215
return 0;
1216
}
1217
1218
struct ifreq ifr;
1219
if(not get_flags(if_entry->d_name, &ifr)){
1220
if(debug){
1221
fprintf_plus(stderr, "Failed to get flags for interface "
1222
"\"%s\"\n", if_entry->d_name);
1223
}
1224
return 0;
1225
}
1226
1227
/* Reject down interfaces */
1228
if(not (ifr.ifr_flags & IFF_UP)){
1229
if(debug){
1230
fprintf_plus(stderr, "Rejecting down interface \"%s\"\n",
1231
if_entry->d_name);
1232
}
1233
return 0;
1234
}
1235
1236
/* Reject non-running interfaces */
1237
if(not (ifr.ifr_flags & IFF_RUNNING)){
1238
if(debug){
1239
fprintf_plus(stderr, "Rejecting non-running interface \"%s\"\n",
1240
if_entry->d_name);
1241
}
1242
return 0;
1243
}
1244
1245
if(not good_flags(if_entry->d_name, &ifr)){
1246
return 0;
1186
fprintf(stderr, "Interface \"%s\" is acceptable\n",
1187
if_entry->d_name);
1247
1188
}
1248
1189
return 1;
1249
1190
}
1259
1200
return 1;
1260
1201
}
1261
1202
1262
/* Is this directory entry a runnable program? */
1263
int runnable_hook(const struct dirent *direntry){
1264
int ret;
1265
size_t sret;
1266
struct stat st;
1267
1268
if((direntry->d_name)[0] == '\0'){
1269
/* Empty name? */
1270
return 0;
1271
}
1272
1273
sret = strspn(direntry->d_name, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1274
"abcdefghijklmnopqrstuvwxyz"
1275
"0123456789"
1276
"_-");
1277
if((direntry->d_name)[sret] != '\0'){
1278
/* Contains non-allowed characters */
1279
if(debug){
1280
fprintf_plus(stderr, "Ignoring hook \"%s\" with bad name\n",
1281
direntry->d_name);
1282
}
1283
return 0;
1284
}
1285
1286
char *fullname = NULL;
1287
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1288
if(ret < 0){
1289
perror_plus("asprintf");
1290
return 0;
1291
}
1292
1293
ret = stat(fullname, &st);
1294
if(ret == -1){
1295
if(debug){
1296
perror_plus("Could not stat hook");
1297
}
1298
return 0;
1299
}
1300
if(not (S_ISREG(st.st_mode))){
1301
/* Not a regular file */
1302
if(debug){
1303
fprintf_plus(stderr, "Ignoring hook \"%s\" - not a file\n",
1304
direntry->d_name);
1305
}
1306
return 0;
1307
}
1308
if(not (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))){
1309
/* Not executable */
1310
if(debug){
1311
fprintf_plus(stderr, "Ignoring hook \"%s\" - not executable\n",
1312
direntry->d_name);
1313
}
1314
return 0;
1315
}
1316
if(debug){
1317
fprintf_plus(stderr, "Hook \"%s\" is acceptable\n",
1318
direntry->d_name);
1319
}
1320
return 1;
1321
}
1322
1323
1203
int avahi_loop_with_timeout(AvahiSimplePoll *s, int retry_interval){
1324
1204
int ret;
1325
1205
struct timespec now;
1326
1206
struct timespec waited_time;
1327
1207
intmax_t block_time;
1328
1208
1329
1209
while(true){
1330
1210
if(mc.current_server == NULL){
1331
1211
if (debug){
1332
fprintf_plus(stderr, "Wait until first server is found."
1333
" No timeout!\n");
1212
fprintf(stderr,
1213
"Wait until first server is found. No timeout!\n");
1334
1214
}
1335
1215
ret = avahi_simple_poll_iterate(s, -1);
1336
1216
} else {
1337
1217
if (debug){
1338
fprintf_plus(stderr, "Check current_server if we should run"
1339
" it, or wait\n");
1218
fprintf(stderr, "Check current_server if we should run it,"
1219
" or wait\n");
1340
1220
}
1341
1221
/* the current time */
1342
1222
ret = clock_gettime(CLOCK_MONOTONIC, &now);
1356
1236
block_time = ((retry_interval
1357
1237
- ((intmax_t)waited_time.tv_sec * 1000))
1358
1238
- ((intmax_t)waited_time.tv_nsec / 1000000));
1359
1239
1360
1240
if (debug){
1361
fprintf_plus(stderr, "Blocking for %" PRIdMAX " ms\n",
1362
block_time);
1241
fprintf(stderr, "Blocking for %ld ms\n", block_time);
1363
1242
}
1364
1243
1365
1244
if(block_time <= 0){
1366
1245
ret = start_mandos_communication(mc.current_server->ip,
1367
1246
mc.current_server->port,
1385
1264
ret = avahi_simple_poll_iterate(s, (int)block_time);
1386
1265
}
1387
1266
if(ret != 0){
1388
if (ret > 0 or errno != EINTR){
1267
if (ret > 0 or errno != EINTR) {
1389
1268
return (ret != 1) ? ret : 0;
1390
1269
}
1391
1270
}
1392
1271
}
1393
1272
}
1394
1273
1395
/* Set effective uid to 0, return errno */
1396
error_t raise_privileges(void){
1397
error_t old_errno = errno;
1398
error_t ret_errno = 0;
1399
if(seteuid(0) == -1){
1400
ret_errno = errno;
1401
perror_plus("seteuid");
1402
}
1403
errno = old_errno;
1404
return ret_errno;
1405
}
1406
1407
/* Set effective and real user ID to 0. Return errno. */
1408
error_t raise_privileges_permanently(void){
1409
error_t old_errno = errno;
1410
error_t ret_errno = raise_privileges();
1411
if(ret_errno != 0){
1412
errno = old_errno;
1413
return ret_errno;
1414
}
1415
if(setuid(0) == -1){
1416
ret_errno = errno;
1417
perror_plus("seteuid");
1418
}
1419
errno = old_errno;
1420
return ret_errno;
1421
}
1422
1423
/* Set effective user ID to unprivileged saved user ID */
1424
error_t lower_privileges(void){
1425
error_t old_errno = errno;
1426
error_t ret_errno = 0;
1427
if(seteuid(uid) == -1){
1428
ret_errno = errno;
1429
perror_plus("seteuid");
1430
}
1431
errno = old_errno;
1432
return ret_errno;
1433
}
1434
1435
bool run_network_hooks(const char *mode, const char *interface,
1436
const float delay){
1437
struct dirent **direntries;
1438
struct dirent *direntry;
1439
int ret;
1440
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1441
alphasort);
1442
if(numhooks == -1){
1443
perror_plus("scandir");
1444
} else {
1445
int devnull = open("/dev/null", O_RDONLY);
1446
for(int i = 0; i < numhooks; i++){
1447
direntry = direntries[i];
1448
char *fullname = NULL;
1449
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1450
if(ret < 0){
1451
perror_plus("asprintf");
1452
continue;
1453
}
1454
if(debug){
1455
fprintf_plus(stderr, "Running network hook \"%s\"\n",
1456
direntry->d_name);
1457
}
1458
pid_t hook_pid = fork();
1459
if(hook_pid == 0){
1460
/* Child */
1461
/* Raise privileges */
1462
raise_privileges_permanently();
1463
/* Set group */
1464
errno = 0;
1465
ret = setgid(0);
1466
if(ret == -1){
1467
perror_plus("setgid");
1468
}
1469
/* Reset supplementary groups */
1470
errno = 0;
1471
ret = setgroups(0, NULL);
1472
if(ret == -1){
1473
perror_plus("setgroups");
1474
}
1475
dup2(devnull, STDIN_FILENO);
1476
close(devnull);
1477
dup2(STDERR_FILENO, STDOUT_FILENO);
1478
ret = setenv("MANDOSNETHOOKDIR", hookdir, 1);
1479
if(ret == -1){
1480
perror_plus("setenv");
1481
_exit(EX_OSERR);
1482
}
1483
ret = setenv("DEVICE", interface, 1);
1484
if(ret == -1){
1485
perror_plus("setenv");
1486
_exit(EX_OSERR);
1487
}
1488
ret = setenv("VERBOSITY", debug ? "1" : "0", 1);
1489
if(ret == -1){
1490
perror_plus("setenv");
1491
_exit(EX_OSERR);
1492
}
1493
ret = setenv("MODE", mode, 1);
1494
if(ret == -1){
1495
perror_plus("setenv");
1496
_exit(EX_OSERR);
1497
}
1498
char *delaystring;
1499
ret = asprintf(&delaystring, "%f", delay);
1500
if(ret == -1){
1501
perror_plus("asprintf");
1502
_exit(EX_OSERR);
1503
}
1504
ret = setenv("DELAY", delaystring, 1);
1505
if(ret == -1){
1506
free(delaystring);
1507
perror_plus("setenv");
1508
_exit(EX_OSERR);
1509
}
1510
free(delaystring);
1511
if(connect_to != NULL){
1512
ret = setenv("CONNECT", connect_to, 1);
1513
if(ret == -1){
1514
perror_plus("setenv");
1515
_exit(EX_OSERR);
1516
}
1517
}
1518
if(execl(fullname, direntry->d_name, mode, NULL) == -1){
1519
perror_plus("execl");
1520
_exit(EXIT_FAILURE);
1521
}
1522
} else {
1523
int status;
1524
if(TEMP_FAILURE_RETRY(waitpid(hook_pid, &status, 0)) == -1){
1525
perror_plus("waitpid");
1526
free(fullname);
1527
continue;
1528
}
1529
if(WIFEXITED(status)){
1530
if(WEXITSTATUS(status) != 0){
1531
fprintf_plus(stderr, "Warning: network hook \"%s\" exited"
1532
" with status %d\n", direntry->d_name,
1533
WEXITSTATUS(status));
1534
free(fullname);
1535
continue;
1536
}
1537
} else if(WIFSIGNALED(status)){
1538
fprintf_plus(stderr, "Warning: network hook \"%s\" died by"
1539
" signal %d\n", direntry->d_name,
1540
WTERMSIG(status));
1541
free(fullname);
1542
continue;
1543
} else {
1544
fprintf_plus(stderr, "Warning: network hook \"%s\""
1545
" crashed\n", direntry->d_name);
1546
free(fullname);
1547
continue;
1548
}
1549
}
1550
free(fullname);
1551
if(debug){
1552
fprintf_plus(stderr, "Network hook \"%s\" ran successfully\n",
1553
direntry->d_name);
1554
}
1555
}
1556
close(devnull);
1557
}
1558
return true;
1559
}
1560
1561
int bring_up_interface(const char *const interface,
1562
const float delay){
1563
int sd = -1;
1564
int old_errno = errno;
1565
int ret_errno = 0;
1566
int ret;
1567
struct ifreq network;
1568
AvahiIfIndex if_index = (AvahiIfIndex)if_nametoindex(interface);
1569
if(if_index == 0){
1570
fprintf_plus(stderr, "No such interface: \"%s\"\n", interface);
1571
errno = old_errno;
1572
return ENXIO;
1573
}
1574
1575
if(quit_now){
1576
errno = old_errno;
1577
return EINTR;
1578
}
1579
1580
/* Re-raise priviliges */
1581
raise_privileges();
1582
1583
#ifdef __linux__
1584
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1585
messages about the network interface to mess up the prompt */
1586
ret = klogctl(8, NULL, 5);
1587
bool restore_loglevel = true;
1588
if(ret == -1){
1589
restore_loglevel = false;
1590
perror_plus("klogctl");
1591
}
1592
#endif /* __linux__ */
1593
1594
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1595
if(sd < 0){
1596
ret_errno = errno;
1597
perror_plus("socket");
1598
#ifdef __linux__
1599
if(restore_loglevel){
1600
ret = klogctl(7, NULL, 0);
1601
if(ret == -1){
1602
perror_plus("klogctl");
1603
}
1604
}
1605
#endif /* __linux__ */
1606
/* Lower privileges */
1607
lower_privileges();
1608
errno = old_errno;
1609
return ret_errno;
1610
}
1611
strcpy(network.ifr_name, interface);
1612
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1613
if(ret == -1){
1614
ret_errno = errno;
1615
perror_plus("ioctl SIOCGIFFLAGS");
1616
#ifdef __linux__
1617
if(restore_loglevel){
1618
ret = klogctl(7, NULL, 0);
1619
if(ret == -1){
1620
perror_plus("klogctl");
1621
}
1622
}
1623
#endif /* __linux__ */
1624
/* Lower privileges */
1625
lower_privileges();
1626
errno = old_errno;
1627
return ret_errno;
1628
}
1629
if((network.ifr_flags & IFF_UP) == 0){
1630
network.ifr_flags |= IFF_UP;
1631
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1632
if(ret == -1){
1633
ret_errno = errno;
1634
perror_plus("ioctl SIOCSIFFLAGS +IFF_UP");
1635
#ifdef __linux__
1636
if(restore_loglevel){
1637
ret = klogctl(7, NULL, 0);
1638
if(ret == -1){
1639
perror_plus("klogctl");
1640
}
1641
}
1642
#endif /* __linux__ */
1643
/* Lower privileges */
1644
lower_privileges();
1645
errno = old_errno;
1646
return ret_errno;
1647
}
1648
}
1649
/* Sleep checking until interface is running.
1650
Check every 0.25s, up to total time of delay */
1651
for(int i=0; i < delay * 4; i++){
1652
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1653
if(ret == -1){
1654
perror_plus("ioctl SIOCGIFFLAGS");
1655
} else if(network.ifr_flags & IFF_RUNNING){
1656
break;
1657
}
1658
struct timespec sleeptime = { .tv_nsec = 250000000 };
1659
ret = nanosleep(&sleeptime, NULL);
1660
if(ret == -1 and errno != EINTR){
1661
perror_plus("nanosleep");
1662
}
1663
}
1664
/* Close the socket */
1665
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1666
if(ret == -1){
1667
perror_plus("close");
1668
}
1669
#ifdef __linux__
1670
if(restore_loglevel){
1671
/* Restores kernel loglevel to default */
1672
ret = klogctl(7, NULL, 0);
1673
if(ret == -1){
1674
perror_plus("klogctl");
1675
}
1676
}
1677
#endif /* __linux__ */
1678
/* Lower privileges */
1679
lower_privileges();
1680
errno = old_errno;
1681
return 0;
1682
}
1683
1684
1274
int main(int argc, char *argv[]){
1685
1275
AvahiSServiceBrowser *sb = NULL;
1686
1276
int error;
1692
1282
struct ifreq network;
1693
1283
int sd = -1;
1694
1284
bool take_down_interface = false;
1285
uid_t uid;
1286
gid_t gid;
1695
1287
char tempdir[] = "/tmp/mandosXXXXXX";
1696
1288
bool tempdir_created = false;
1697
1289
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
1764
1356
.group = 2 },
1765
1357
{ .name = "retry", .key = 132,
1766
1358
.arg = "SECONDS",
1767
.doc = "Retry interval used when denied by the Mandos server",
1768
.group = 2 },
1769
{ .name = "network-hook-dir", .key = 133,
1770
.arg = "DIR",
1771
.doc = "Directory where network hooks are located",
1359
.doc = "Retry interval used when denied by the mandos server",
1772
1360
.group = 2 },
1773
1361
/*
1774
1362
* These reproduce what we would get without ARGP_NO_HELP
1823
1411
errno = 0;
1824
1412
retry_interval = strtod(arg, &tmp);
1825
1413
if(errno != 0 or tmp == arg or *tmp != '\0'
1826
or (retry_interval * 1000) > INT_MAX
1827
or retry_interval < 0){
1414
or (retry_interval * 1000) > INT_MAX){
1828
1415
argp_error(state, "Bad retry interval");
1829
1416
}
1830
1417
break;
1831
case 133: /* --network-hook-dir */
1832
hookdir = arg;
1833
break;
1834
1418
/*
1835
1419
* These reproduce what we would get without ARGP_NO_HELP
1836
1420
*/
1842
1426
argp_state_help(state, state->out_stream,
1843
1427
ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);
1844
1428
case 'V': /* --version */
1845
fprintf_plus(state->out_stream, "%s\n", argp_program_version);
1429
fprintf(state->out_stream, "%s\n", argp_program_version);
1846
1430
exit(argp_err_exit_status);
1847
1431
break;
1848
1432
default:
1875
1459
{
1876
1460
/* Work around Debian bug #633582:
1877
1461
<http://bugs.debian.org/633582> */
1462
struct stat st;
1878
1463
1879
1464
/* Re-raise priviliges */
1880
if(raise_privileges() == 0){
1881
struct stat st;
1882
1883
if(strcmp(seckey, PATHDIR "/" SECKEY) == 0){
1884
int seckey_fd = open(seckey, O_RDONLY);
1885
if(seckey_fd == -1){
1886
perror_plus("open");
1887
} else {
1888
ret = (int)TEMP_FAILURE_RETRY(fstat(seckey_fd, &st));
1889
if(ret == -1){
1890
perror_plus("fstat");
1891
} else {
1892
if(S_ISREG(st.st_mode)
1893
and st.st_uid == 0 and st.st_gid == 0){
1894
ret = fchown(seckey_fd, uid, gid);
1895
if(ret == -1){
1896
perror_plus("fchown");
1897
}
1898
}
1899
}
1900
TEMP_FAILURE_RETRY(close(seckey_fd));
1901
}
1902
}
1903
1904
if(strcmp(pubkey, PATHDIR "/" PUBKEY) == 0){
1905
int pubkey_fd = open(pubkey, O_RDONLY);
1906
if(pubkey_fd == -1){
1907
perror_plus("open");
1908
} else {
1909
ret = (int)TEMP_FAILURE_RETRY(fstat(pubkey_fd, &st));
1910
if(ret == -1){
1911
perror_plus("fstat");
1912
} else {
1913
if(S_ISREG(st.st_mode)
1914
and st.st_uid == 0 and st.st_gid == 0){
1915
ret = fchown(pubkey_fd, uid, gid);
1916
if(ret == -1){
1917
perror_plus("fchown");
1918
}
1919
}
1920
}
1921
TEMP_FAILURE_RETRY(close(pubkey_fd));
1922
}
1923
}
1924
1925
/* Lower privileges */
1926
errno = 0;
1927
ret = seteuid(uid);
1928
if(ret == -1){
1929
perror_plus("seteuid");
1930
}
1931
}
1932
}
1933
1934
/* Run network hooks */
1935
if(not run_network_hooks("start", interface, delay)){
1936
goto end;
1465
errno = 0;
1466
ret = seteuid(0);
1467
if(ret == -1){
1468
perror_plus("seteuid");
1469
}
1470
1471
int seckey_fd = open(PATHDIR "/" SECKEY, O_RDONLY);
1472
if(seckey_fd == -1){
1473
perror_plus("open");
1474
} else {
1475
ret = (int)TEMP_FAILURE_RETRY(fstat(seckey_fd, &st));
1476
if(ret == -1){
1477
perror_plus("fstat");
1478
} else {
1479
if(S_ISREG(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
1480
ret = fchown(seckey_fd, uid, gid);
1481
if(ret == -1){
1482
perror_plus("fchown");
1483
}
1484
}
1485
}
1486
TEMP_FAILURE_RETRY(close(seckey_fd));
1487
}
1488
1489
int pubkey_fd = open(PATHDIR "/" PUBKEY, O_RDONLY);
1490
if(pubkey_fd == -1){
1491
perror_plus("open");
1492
} else {
1493
ret = (int)TEMP_FAILURE_RETRY(fstat(pubkey_fd, &st));
1494
if(ret == -1){
1495
perror_plus("fstat");
1496
} else {
1497
if(S_ISREG(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
1498
ret = fchown(pubkey_fd, uid, gid);
1499
if(ret == -1){
1500
perror_plus("fchown");
1501
}
1502
}
1503
}
1504
TEMP_FAILURE_RETRY(close(pubkey_fd));
1505
}
1506
1507
/* Lower privileges */
1508
errno = 0;
1509
ret = seteuid(uid);
1510
if(ret == -1){
1511
perror_plus("seteuid");
1512
}
1937
1513
}
1938
1514
1939
1515
if(not debug){
1940
1516
avahi_set_log_function(empty_log);
1941
1517
}
1942
1518
1943
1519
if(interface[0] == '\0'){
1944
1520
struct dirent **direntries;
1945
/* First look for interfaces that are up */
1946
ret = scandir(sys_class_net, &direntries, up_interface,
1521
ret = scandir(sys_class_net, &direntries, good_interface,
1947
1522
alphasort);
1948
if(ret == 0){
1949
/* No up interfaces, look for any good interfaces */
1950
free(direntries);
1951
ret = scandir(sys_class_net, &direntries, good_interface,
1952
alphasort);
1953
}
1954
1523
if(ret >= 1){
1955
/* Pick the first interface returned */
1524
/* Pick the first good interface */
1956
1525
interface = strdup(direntries[0]->d_name);
1957
1526
if(debug){
1958
fprintf_plus(stderr, "Using interface \"%s\"\n", interface);
1527
fprintf(stderr, "Using interface \"%s\"\n", interface);
1959
1528
}
1960
1529
if(interface == NULL){
1961
1530
perror_plus("malloc");
1966
1535
free(direntries);
1967
1536
} else {
1968
1537
free(direntries);
1969
fprintf_plus(stderr, "Could not find a network interface\n");
1538
fprintf(stderr, "Could not find a network interface\n");
1970
1539
exitcode = EXIT_FAILURE;
1971
1540
goto end;
1972
1541
}
1978
1547
srand((unsigned int) time(NULL));
1979
1548
mc.simple_poll = avahi_simple_poll_new();
1980
1549
if(mc.simple_poll == NULL){
1981
fprintf_plus(stderr,
1982
"Avahi: Failed to create simple poll object.\n");
1550
fprintf(stderr, "Avahi: Failed to create simple poll object.\n");
1983
1551
exitcode = EX_UNAVAILABLE;
1984
1552
goto end;
1985
1553
}
2048
1616
}
2049
1617
2050
1618
/* If the interface is down, bring it up */
2051
if((interface[0] != '\0') and (strcmp(interface, "none") != 0)){
2052
ret = bring_up_interface(interface, delay);
2053
if(ret != 0){
2054
errno = ret;
2055
perror_plus("Failed to bring up interface");
1619
if(strcmp(interface, "none") != 0){
1620
if_index = (AvahiIfIndex) if_nametoindex(interface);
1621
if(if_index == 0){
1622
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1623
exitcode = EX_UNAVAILABLE;
1624
goto end;
1625
}
1626
1627
if(quit_now){
1628
goto end;
1629
}
1630
1631
/* Re-raise priviliges */
1632
errno = 0;
1633
ret = seteuid(0);
1634
if(ret == -1){
1635
perror_plus("seteuid");
1636
}
1637
1638
#ifdef __linux__
1639
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1640
messages about the network interface to mess up the prompt */
1641
ret = klogctl(8, NULL, 5);
1642
bool restore_loglevel = true;
1643
if(ret == -1){
1644
restore_loglevel = false;
1645
perror_plus("klogctl");
1646
}
1647
#endif /* __linux__ */
1648
1649
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1650
if(sd < 0){
1651
perror_plus("socket");
1652
exitcode = EX_OSERR;
1653
#ifdef __linux__
1654
if(restore_loglevel){
1655
ret = klogctl(7, NULL, 0);
1656
if(ret == -1){
1657
perror_plus("klogctl");
1658
}
1659
}
1660
#endif /* __linux__ */
1661
/* Lower privileges */
1662
errno = 0;
1663
ret = seteuid(uid);
1664
if(ret == -1){
1665
perror_plus("seteuid");
1666
}
1667
goto end;
1668
}
1669
strcpy(network.ifr_name, interface);
1670
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1671
if(ret == -1){
1672
perror_plus("ioctl SIOCGIFFLAGS");
1673
#ifdef __linux__
1674
if(restore_loglevel){
1675
ret = klogctl(7, NULL, 0);
1676
if(ret == -1){
1677
perror_plus("klogctl");
1678
}
1679
}
1680
#endif /* __linux__ */
1681
exitcode = EX_OSERR;
1682
/* Lower privileges */
1683
errno = 0;
1684
ret = seteuid(uid);
1685
if(ret == -1){
1686
perror_plus("seteuid");
1687
}
1688
goto end;
1689
}
1690
if((network.ifr_flags & IFF_UP) == 0){
1691
network.ifr_flags |= IFF_UP;
1692
take_down_interface = true;
1693
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1694
if(ret == -1){
1695
take_down_interface = false;
1696
perror_plus("ioctl SIOCSIFFLAGS +IFF_UP");
1697
exitcode = EX_OSERR;
1698
#ifdef __linux__
1699
if(restore_loglevel){
1700
ret = klogctl(7, NULL, 0);
1701
if(ret == -1){
1702
perror_plus("klogctl");
1703
}
1704
}
1705
#endif /* __linux__ */
1706
/* Lower privileges */
1707
errno = 0;
1708
ret = seteuid(uid);
1709
if(ret == -1){
1710
perror_plus("seteuid");
1711
}
1712
goto end;
1713
}
1714
}
1715
/* Sleep checking until interface is running.
1716
Check every 0.25s, up to total time of delay */
1717
for(int i=0; i < delay * 4; i++){
1718
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1719
if(ret == -1){
1720
perror_plus("ioctl SIOCGIFFLAGS");
1721
} else if(network.ifr_flags & IFF_RUNNING){
1722
break;
1723
}
1724
struct timespec sleeptime = { .tv_nsec = 250000000 };
1725
ret = nanosleep(&sleeptime, NULL);
1726
if(ret == -1 and errno != EINTR){
1727
perror_plus("nanosleep");
1728
}
1729
}
1730
if(not take_down_interface){
1731
/* We won't need the socket anymore */
1732
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1733
if(ret == -1){
1734
perror_plus("close");
1735
}
1736
}
1737
#ifdef __linux__
1738
if(restore_loglevel){
1739
/* Restores kernel loglevel to default */
1740
ret = klogctl(7, NULL, 0);
1741
if(ret == -1){
1742
perror_plus("klogctl");
1743
}
1744
}
1745
#endif /* __linux__ */
1746
/* Lower privileges */
1747
errno = 0;
1748
if(take_down_interface){
1749
/* Lower privileges */
1750
ret = seteuid(uid);
1751
if(ret == -1){
1752
perror_plus("seteuid");
1753
}
1754
} else {
1755
/* Lower privileges permanently */
1756
ret = setuid(uid);
1757
if(ret == -1){
1758
perror_plus("setuid");
1759
}
2056
1760
}
2057
1761
}
2058
1762
2062
1766
2063
1767
ret = init_gnutls_global(pubkey, seckey);
2064
1768
if(ret == -1){
2065
fprintf_plus(stderr, "init_gnutls_global failed\n");
1769
fprintf(stderr, "init_gnutls_global failed\n");
2066
1770
exitcode = EX_UNAVAILABLE;
2067
1771
goto end;
2068
1772
} else {
2084
1788
}
2085
1789
2086
1790
if(not init_gpgme(pubkey, seckey, tempdir)){
2087
fprintf_plus(stderr, "init_gpgme failed\n");
1791
fprintf(stderr, "init_gpgme failed\n");
2088
1792
exitcode = EX_UNAVAILABLE;
2089
1793
goto end;
2090
1794
} else {
2099
1803
/* Connect directly, do not use Zeroconf */
2100
1804
/* (Mainly meant for debugging) */
2101
1805
char *address = strrchr(connect_to, ':');
2102
2103
1806
if(address == NULL){
2104
fprintf_plus(stderr, "No colon in address\n");
1807
fprintf(stderr, "No colon in address\n");
2105
1808
exitcode = EX_USAGE;
2106
1809
goto end;
2107
1810
}
2115
1818
tmpmax = strtoimax(address+1, &tmp, 10);
2116
1819
if(errno != 0 or tmp == address+1 or *tmp != '\0'
2117
1820
or tmpmax != (uint16_t)tmpmax){
2118
fprintf_plus(stderr, "Bad port number\n");
1821
fprintf(stderr, "Bad port number\n");
2119
1822
exitcode = EX_USAGE;
2120
1823
goto end;
2121
1824
}
2126
1829
2127
1830
port = (uint16_t)tmpmax;
2128
1831
*address = '\0';
1832
address = connect_to;
2129
1833
/* Colon in address indicates IPv6 */
2130
1834
int af;
2131
if(strchr(connect_to, ':') != NULL){
1835
if(strchr(address, ':') != NULL){
2132
1836
af = AF_INET6;
2133
/* Accept [] around IPv6 address - see RFC 5952 */
2134
if(connect_to[0] == '[' and address[-1] == ']')
2135
{
2136
connect_to++;
2137
address[-1] = '\0';
2138
}
2139
1837
} else {
2140
1838
af = AF_INET;
2141
1839
}
2142
address = connect_to;
2143
1840
2144
1841
if(quit_now){
2145
1842
goto end;
2146
1843
}
2147
1844
2148
1845
while(not quit_now){
2149
1846
ret = start_mandos_communication(address, port, if_index, af);
2150
1847
if(quit_now or ret == 0){
2151
1848
break;
2152
1849
}
2153
if(debug){
2154
fprintf_plus(stderr, "Retrying in %d seconds\n",
2155
(int)retry_interval);
2156
}
2157
sleep((int)retry_interval);
2158
}
2159
1850
sleep((int)retry_interval or 1);
1851
};
1852
2160
1853
if (not quit_now){
2161
1854
exitcode = EXIT_SUCCESS;
2162
1855
}
2163
1856
2164
1857
goto end;
2165
1858
}
2166
1859
2188
1881
2189
1882
/* Check if creating the Avahi server object succeeded */
2190
1883
if(mc.server == NULL){
2191
fprintf_plus(stderr, "Failed to create Avahi server: %s\n",
2192
avahi_strerror(error));
1884
fprintf(stderr, "Failed to create Avahi server: %s\n",
1885
avahi_strerror(error));
2193
1886
exitcode = EX_UNAVAILABLE;
2194
1887
goto end;
2195
1888
}
2203
1896
AVAHI_PROTO_UNSPEC, "_mandos._tcp",
2204
1897
NULL, 0, browse_callback, NULL);
2205
1898
if(sb == NULL){
2206
fprintf_plus(stderr, "Failed to create service browser: %s\n",
2207
avahi_strerror(avahi_server_errno(mc.server)));
1899
fprintf(stderr, "Failed to create service browser: %s\n",
1900
avahi_strerror(avahi_server_errno(mc.server)));
2208
1901
exitcode = EX_UNAVAILABLE;
2209
1902
goto end;
2210
1903
}
2216
1909
/* Run the main loop */
2217
1910
2218
1911
if(debug){
2219
fprintf_plus(stderr, "Starting Avahi loop search\n");
1912
fprintf(stderr, "Starting Avahi loop search\n");
2220
1913
}
2221
1914
2222
1915
ret = avahi_loop_with_timeout(mc.simple_poll,
2223
1916
(int)(retry_interval * 1000));
2224
1917
if(debug){
2225
fprintf_plus(stderr, "avahi_loop_with_timeout exited %s\n",
2226
(ret == 0) ? "successfully" : "with error");
1918
fprintf(stderr, "avahi_loop_with_timeout exited %s\n",
1919
(ret == 0) ? "successfully" : "with error");
2227
1920
}
2228
1921
2229
1922
end:
2230
1923
2231
1924
if(debug){
2232
fprintf_plus(stderr, "%s exiting\n", argv[0]);
1925
fprintf(stderr, "%s exiting\n", argv[0]);
2233
1926
}
2234
1927
2235
1928
/* Cleanup things */
2251
1944
if(gpgme_initialized){
2252
1945
gpgme_release(mc.ctx);
2253
1946
}
2254
1947
2255
1948
/* Cleans up the circular linked list of Mandos servers the client
2256
1949
has seen */
2257
1950
if(mc.current_server != NULL){
2263
1956
}
2264
1957
}
2265
1958
2266
/* Run network hooks */
2267
run_network_hooks("stop", interface, delay);
2268
2269
/* Re-raise priviliges */
2270
{
2271
raise_privileges();
2272
2273
/* Take down the network interface */
2274
if(take_down_interface and geteuid() == 0){
1959
/* Take down the network interface */
1960
if(take_down_interface){
1961
/* Re-raise priviliges */
1962
errno = 0;
1963
ret = seteuid(0);
1964
if(ret == -1){
1965
perror_plus("seteuid");
1966
}
1967
if(geteuid() == 0){
2275
1968
ret = ioctl(sd, SIOCGIFFLAGS, &network);
2276
1969
if(ret == -1){
2277
1970
perror_plus("ioctl SIOCGIFFLAGS");
2278
} else if(network.ifr_flags & IFF_UP){
1971
} else if(network.ifr_flags & IFF_UP) {
2279
1972
network.ifr_flags &= ~(short)IFF_UP; /* clear flag */
2280
1973
ret = ioctl(sd, SIOCSIFFLAGS, &network);
2281
1974
if(ret == -1){
2286
1979
if(ret == -1){
2287
1980
perror_plus("close");
2288
1981
}
1982
/* Lower privileges permanently */
1983
errno = 0;
1984
ret = setuid(uid);
1985
if(ret == -1){
1986
perror_plus("setuid");
1987
}
2289
1988
}
2290
1989
}
2291
/* Lower privileges permanently */
2292
errno = 0;
2293
ret = setuid(uid);
2294
if(ret == -1){
2295
perror_plus("setuid");
2296
}
2297
1990
2298
1991
/* Removes the GPGME temp directory and all files inside */
2299
1992
if(tempdir_created){
2300
1993
struct dirent **direntries = NULL;
2301
1994
struct dirent *direntry = NULL;
2302
int numentries = scandir(tempdir, &direntries, notdotentries,
2303
alphasort);
2304
if (numentries > 0){
2305
for(int i = 0; i < numentries; i++){
1995
ret = scandir(tempdir, &direntries, notdotentries, alphasort);
1996
if (ret > 0){
1997
for(int i = 0; i < ret; i++){
2306
1998
direntry = direntries[i];
2307
1999
char *fullname = NULL;
2308
2000
ret = asprintf(&fullname, "%s/%s", tempdir,
2313
2005
}
2314
2006
ret = remove(fullname);
2315
2007
if(ret == -1){
2316
fprintf_plus(stderr, "remove(\"%s\"): %s\n", fullname,
2317
strerror(errno));
2008
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
2009
strerror(errno));
2318
2010
}
2319
2011
free(fullname);
2320
2012
}
2321
2013
}
2322
2014
2323
/* need to clean even if 0 because man page doesn't specify */
2015
/* need to be cleaned even if ret == 0 because man page doesn't
2016
specify */
2324
2017
free(direntries);
2325
if (numentries == -1){
2018
if (ret == -1){
2326
2019
perror_plus("scandir");
2327
2020
}
2328
2021
ret = rmdir(tempdir);
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0