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- Committer: Teddy Hogeborn
- Date: 2011-11-24 20:15:24 UTC
- mto: (505.2.8 mandos-client-network-hooks)
- mto: This revision was merged to the branch mainline in revision 525.
- Revision ID: teddy@recompile.se-20111124201524-5w9ovzpuw3drdlgf
* network-hooks.d: New directory.
* network-hooks.d/bridge: New example hook.
* network-hooks.d/bridge.conf: Config file for bridge example hook.
* network-hooks.d/bridge: New example hook.
* network-hooks.d/bridge.conf: Config file for bridge example hook.
- files added:
- network-hooks.d
- files modified:
- TODO
added
removed
plugins.d/mandos-client.c
110
110
init_gnutls_session(),
111
111
GNUTLS_* */
112
112
#include <gnutls/openpgp.h>
113
/* gnutls_certificate_set_openpgp_key_file(),
114
GNUTLS_OPENPGP_FMT_BASE64 */
113
/* gnutls_certificate_set_openpgp_key_file(),
114
GNUTLS_OPENPGP_FMT_BASE64 */
115
115
116
116
/* GPGME */
117
117
#include <gpgme.h> /* All GPGME types, constants and
174
174
perror(print_text);
175
175
}
176
176
177
int fprintf_plus(FILE *stream, const char *format, ...){
178
va_list ap;
179
va_start (ap, format);
180
181
TEMP_FAILURE_RETRY(fprintf(stream, "Mandos plugin %s: ",
182
program_invocation_short_name));
183
return TEMP_FAILURE_RETRY(vfprintf(stream, format, ap));
184
}
185
177
186
/*
178
187
* Make additional room in "buffer" for at least BUFFER_SIZE more
179
188
* bytes. "buffer_capacity" is how much is currently allocated,
180
189
* "buffer_length" is how much is already used.
181
190
*/
182
191
size_t incbuffer(char **buffer, size_t buffer_length,
183
size_t buffer_capacity){
192
size_t buffer_capacity){
184
193
if(buffer_length + BUFFER_SIZE > buffer_capacity){
185
194
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
186
195
if(buffer == NULL){
192
201
}
193
202
194
203
/* Add server to set of servers to retry periodically */
195
int add_server(const char *ip, uint16_t port,
196
AvahiIfIndex if_index,
197
int af){
204
int add_server(const char *ip, uint16_t port, AvahiIfIndex if_index,
205
int af){
198
206
int ret;
199
207
server *new_server = malloc(sizeof(server));
200
208
if(new_server == NULL){
202
210
return -1;
203
211
}
204
212
*new_server = (server){ .ip = strdup(ip),
205
.port = port,
206
.if_index = if_index,
207
.af = af };
213
.port = port,
214
.if_index = if_index,
215
.af = af };
208
216
if(new_server->ip == NULL){
209
217
perror_plus("strdup");
210
218
return -1;
232
240
/*
233
241
* Initialize GPGME.
234
242
*/
235
static bool init_gpgme(const char *seckey,
236
const char *pubkey, const char *tempdir){
243
static bool init_gpgme(const char *seckey, const char *pubkey,
244
const char *tempdir){
237
245
gpgme_error_t rc;
238
246
gpgme_engine_info_t engine_info;
239
247
254
262
255
263
rc = gpgme_data_new_from_fd(&pgp_data, fd);
256
264
if(rc != GPG_ERR_NO_ERROR){
257
fprintf(stderr, "Mandos plugin mandos-client: "
258
"bad gpgme_data_new_from_fd: %s: %s\n",
259
gpgme_strsource(rc), gpgme_strerror(rc));
265
fprintf_plus(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
266
gpgme_strsource(rc), gpgme_strerror(rc));
260
267
return false;
261
268
}
262
269
263
270
rc = gpgme_op_import(mc.ctx, pgp_data);
264
271
if(rc != GPG_ERR_NO_ERROR){
265
fprintf(stderr, "Mandos plugin mandos-client: "
266
"bad gpgme_op_import: %s: %s\n",
267
gpgme_strsource(rc), gpgme_strerror(rc));
272
fprintf_plus(stderr, "bad gpgme_op_import: %s: %s\n",
273
gpgme_strsource(rc), gpgme_strerror(rc));
268
274
return false;
269
275
}
270
276
277
283
}
278
284
279
285
if(debug){
280
fprintf(stderr, "Mandos plugin mandos-client: "
281
"Initializing GPGME\n");
286
fprintf_plus(stderr, "Initializing GPGME\n");
282
287
}
283
288
284
289
/* Init GPGME */
285
290
gpgme_check_version(NULL);
286
291
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
287
292
if(rc != GPG_ERR_NO_ERROR){
288
fprintf(stderr, "Mandos plugin mandos-client: "
289
"bad gpgme_engine_check_version: %s: %s\n",
290
gpgme_strsource(rc), gpgme_strerror(rc));
293
fprintf_plus(stderr, "bad gpgme_engine_check_version: %s: %s\n",
294
gpgme_strsource(rc), gpgme_strerror(rc));
291
295
return false;
292
296
}
293
297
294
298
/* Set GPGME home directory for the OpenPGP engine only */
295
299
rc = gpgme_get_engine_info(&engine_info);
296
300
if(rc != GPG_ERR_NO_ERROR){
297
fprintf(stderr, "Mandos plugin mandos-client: "
298
"bad gpgme_get_engine_info: %s: %s\n",
299
gpgme_strsource(rc), gpgme_strerror(rc));
301
fprintf_plus(stderr, "bad gpgme_get_engine_info: %s: %s\n",
302
gpgme_strsource(rc), gpgme_strerror(rc));
300
303
return false;
301
304
}
302
305
while(engine_info != NULL){
308
311
engine_info = engine_info->next;
309
312
}
310
313
if(engine_info == NULL){
311
fprintf(stderr, "Mandos plugin mandos-client: "
312
"Could not set GPGME home dir to %s\n", tempdir);
314
fprintf_plus(stderr, "Could not set GPGME home dir to %s\n",
315
tempdir);
313
316
return false;
314
317
}
315
318
316
319
/* Create new GPGME "context" */
317
320
rc = gpgme_new(&(mc.ctx));
318
321
if(rc != GPG_ERR_NO_ERROR){
319
fprintf(stderr, "Mandos plugin mandos-client: "
320
"bad gpgme_new: %s: %s\n", gpgme_strsource(rc),
321
gpgme_strerror(rc));
322
fprintf_plus(stderr, "Mandos plugin mandos-client: "
323
"bad gpgme_new: %s: %s\n", gpgme_strsource(rc),
324
gpgme_strerror(rc));
322
325
return false;
323
326
}
324
327
343
346
ssize_t plaintext_length = 0;
344
347
345
348
if(debug){
346
fprintf(stderr, "Mandos plugin mandos-client: "
347
"Trying to decrypt OpenPGP data\n");
349
fprintf_plus(stderr, "Trying to decrypt OpenPGP data\n");
348
350
}
349
351
350
352
/* Create new GPGME data buffer from memory cryptotext */
351
353
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
352
354
0);
353
355
if(rc != GPG_ERR_NO_ERROR){
354
fprintf(stderr, "Mandos plugin mandos-client: "
355
"bad gpgme_data_new_from_mem: %s: %s\n",
356
gpgme_strsource(rc), gpgme_strerror(rc));
356
fprintf_plus(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
357
gpgme_strsource(rc), gpgme_strerror(rc));
357
358
return -1;
358
359
}
359
360
360
361
/* Create new empty GPGME data buffer for the plaintext */
361
362
rc = gpgme_data_new(&dh_plain);
362
363
if(rc != GPG_ERR_NO_ERROR){
363
fprintf(stderr, "Mandos plugin mandos-client: "
364
"bad gpgme_data_new: %s: %s\n",
365
gpgme_strsource(rc), gpgme_strerror(rc));
364
fprintf_plus(stderr, "Mandos plugin mandos-client: "
365
"bad gpgme_data_new: %s: %s\n",
366
gpgme_strsource(rc), gpgme_strerror(rc));
366
367
gpgme_data_release(dh_crypto);
367
368
return -1;
368
369
}
371
372
data buffer */
372
373
rc = gpgme_op_decrypt(mc.ctx, dh_crypto, dh_plain);
373
374
if(rc != GPG_ERR_NO_ERROR){
374
fprintf(stderr, "Mandos plugin mandos-client: "
375
"bad gpgme_op_decrypt: %s: %s\n",
376
gpgme_strsource(rc), gpgme_strerror(rc));
375
fprintf_plus(stderr, "bad gpgme_op_decrypt: %s: %s\n",
376
gpgme_strsource(rc), gpgme_strerror(rc));
377
377
plaintext_length = -1;
378
378
if(debug){
379
379
gpgme_decrypt_result_t result;
380
380
result = gpgme_op_decrypt_result(mc.ctx);
381
381
if(result == NULL){
382
fprintf(stderr, "Mandos plugin mandos-client: "
383
"gpgme_op_decrypt_result failed\n");
382
fprintf_plus(stderr, "gpgme_op_decrypt_result failed\n");
384
383
} else {
385
fprintf(stderr, "Mandos plugin mandos-client: "
386
"Unsupported algorithm: %s\n",
387
result->unsupported_algorithm);
388
fprintf(stderr, "Mandos plugin mandos-client: "
389
"Wrong key usage: %u\n",
390
result->wrong_key_usage);
384
fprintf_plus(stderr, "Unsupported algorithm: %s\n",
385
result->unsupported_algorithm);
386
fprintf_plus(stderr, "Wrong key usage: %u\n",
387
result->wrong_key_usage);
391
388
if(result->file_name != NULL){
392
fprintf(stderr, "Mandos plugin mandos-client: "
393
"File name: %s\n", result->file_name);
389
fprintf_plus(stderr, "File name: %s\n", result->file_name);
394
390
}
395
391
gpgme_recipient_t recipient;
396
392
recipient = result->recipients;
397
393
while(recipient != NULL){
398
fprintf(stderr, "Mandos plugin mandos-client: "
399
"Public key algorithm: %s\n",
400
gpgme_pubkey_algo_name(recipient->pubkey_algo));
401
fprintf(stderr, "Mandos plugin mandos-client: "
402
"Key ID: %s\n", recipient->keyid);
403
fprintf(stderr, "Mandos plugin mandos-client: "
404
"Secret key available: %s\n",
405
recipient->status == GPG_ERR_NO_SECKEY
406
? "No" : "Yes");
394
fprintf_plus(stderr, "Public key algorithm: %s\n",
395
gpgme_pubkey_algo_name
396
(recipient->pubkey_algo));
397
fprintf_plus(stderr, "Key ID: %s\n", recipient->keyid);
398
fprintf_plus(stderr, "Secret key available: %s\n",
399
recipient->status == GPG_ERR_NO_SECKEY
400
? "No" : "Yes");
407
401
recipient = recipient->next;
408
402
}
409
403
}
412
406
}
413
407
414
408
if(debug){
415
fprintf(stderr, "Mandos plugin mandos-client: "
416
"Decryption of OpenPGP data succeeded\n");
409
fprintf_plus(stderr, "Decryption of OpenPGP data succeeded\n");
417
410
}
418
411
419
412
/* Seek back to the beginning of the GPGME plaintext data buffer */
426
419
*plaintext = NULL;
427
420
while(true){
428
421
plaintext_capacity = incbuffer(plaintext,
429
(size_t)plaintext_length,
430
plaintext_capacity);
422
(size_t)plaintext_length,
423
plaintext_capacity);
431
424
if(plaintext_capacity == 0){
432
perror_plus("incbuffer");
433
plaintext_length = -1;
434
goto decrypt_end;
425
perror_plus("incbuffer");
426
plaintext_length = -1;
427
goto decrypt_end;
435
428
}
436
429
437
430
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
450
443
}
451
444
452
445
if(debug){
453
fprintf(stderr, "Mandos plugin mandos-client: "
454
"Decrypted password is: ");
446
fprintf_plus(stderr, "Decrypted password is: ");
455
447
for(ssize_t i = 0; i < plaintext_length; i++){
456
448
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
457
449
}
479
471
/* GnuTLS log function callback */
480
472
static void debuggnutls(__attribute__((unused)) int level,
481
473
const char* string){
482
fprintf(stderr, "Mandos plugin mandos-client: GnuTLS: %s", string);
474
fprintf_plus(stderr, "GnuTLS: %s", string);
483
475
}
484
476
485
477
static int init_gnutls_global(const char *pubkeyfilename,
487
479
int ret;
488
480
489
481
if(debug){
490
fprintf(stderr, "Mandos plugin mandos-client: "
491
"Initializing GnuTLS\n");
482
fprintf_plus(stderr, "Initializing GnuTLS\n");
492
483
}
493
484
494
485
ret = gnutls_global_init();
495
486
if(ret != GNUTLS_E_SUCCESS){
496
fprintf(stderr, "Mandos plugin mandos-client: "
497
"GnuTLS global_init: %s\n", safer_gnutls_strerror(ret));
487
fprintf_plus(stderr, "GnuTLS global_init: %s\n",
488
safer_gnutls_strerror(ret));
498
489
return -1;
499
490
}
500
491
509
500
/* OpenPGP credentials */
510
501
ret = gnutls_certificate_allocate_credentials(&mc.cred);
511
502
if(ret != GNUTLS_E_SUCCESS){
512
fprintf(stderr, "Mandos plugin mandos-client: "
513
"GnuTLS memory error: %s\n", safer_gnutls_strerror(ret));
503
fprintf_plus(stderr, "GnuTLS memory error: %s\n",
504
safer_gnutls_strerror(ret));
514
505
gnutls_global_deinit();
515
506
return -1;
516
507
}
517
508
518
509
if(debug){
519
fprintf(stderr, "Mandos plugin mandos-client: "
520
"Attempting to use OpenPGP public key %s and"
521
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
522
seckeyfilename);
510
fprintf_plus(stderr, "Attempting to use OpenPGP public key %s and"
511
" secret key %s as GnuTLS credentials\n",
512
pubkeyfilename,
513
seckeyfilename);
523
514
}
524
515
525
516
ret = gnutls_certificate_set_openpgp_key_file
526
517
(mc.cred, pubkeyfilename, seckeyfilename,
527
518
GNUTLS_OPENPGP_FMT_BASE64);
528
519
if(ret != GNUTLS_E_SUCCESS){
529
fprintf(stderr,
530
"Mandos plugin mandos-client: "
531
"Error[%d] while reading the OpenPGP key pair ('%s',"
532
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
533
fprintf(stderr, "Mandos plugin mandos-client: "
534
"The GnuTLS error is: %s\n", safer_gnutls_strerror(ret));
520
fprintf_plus(stderr,
521
"Error[%d] while reading the OpenPGP key pair ('%s',"
522
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
523
fprintf_plus(stderr, "The GnuTLS error is: %s\n",
524
safer_gnutls_strerror(ret));
535
525
goto globalfail;
536
526
}
537
527
538
528
/* GnuTLS server initialization */
539
529
ret = gnutls_dh_params_init(&mc.dh_params);
540
530
if(ret != GNUTLS_E_SUCCESS){
541
fprintf(stderr, "Mandos plugin mandos-client: "
542
"Error in GnuTLS DH parameter initialization:"
543
" %s\n", safer_gnutls_strerror(ret));
531
fprintf_plus(stderr, "Error in GnuTLS DH parameter"
532
" initialization: %s\n",
533
safer_gnutls_strerror(ret));
544
534
goto globalfail;
545
535
}
546
536
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
547
537
if(ret != GNUTLS_E_SUCCESS){
548
fprintf(stderr, "Mandos plugin mandos-client: "
549
"Error in GnuTLS prime generation: %s\n",
550
safer_gnutls_strerror(ret));
538
fprintf_plus(stderr, "Error in GnuTLS prime generation: %s\n",
539
safer_gnutls_strerror(ret));
551
540
goto globalfail;
552
541
}
553
542
573
562
}
574
563
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
575
564
if(ret != GNUTLS_E_SUCCESS){
576
fprintf(stderr, "Mandos plugin mandos-client: "
577
"Error in GnuTLS session initialization: %s\n",
578
safer_gnutls_strerror(ret));
565
fprintf_plus(stderr,
566
"Error in GnuTLS session initialization: %s\n",
567
safer_gnutls_strerror(ret));
579
568
}
580
569
581
570
{
588
577
}
589
578
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
590
579
if(ret != GNUTLS_E_SUCCESS){
591
fprintf(stderr, "Mandos plugin mandos-client: "
592
"Syntax error at: %s\n", err);
593
fprintf(stderr, "Mandos plugin mandos-client: "
594
"GnuTLS error: %s\n", safer_gnutls_strerror(ret));
580
fprintf_plus(stderr, "Syntax error at: %s\n", err);
581
fprintf_plus(stderr, "GnuTLS error: %s\n",
582
safer_gnutls_strerror(ret));
595
583
gnutls_deinit(*session);
596
584
return -1;
597
585
}
606
594
}
607
595
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
608
596
if(ret != GNUTLS_E_SUCCESS){
609
fprintf(stderr, "Mandos plugin mandos-client: "
610
"Error setting GnuTLS credentials: %s\n",
611
safer_gnutls_strerror(ret));
597
fprintf_plus(stderr, "Error setting GnuTLS credentials: %s\n",
598
safer_gnutls_strerror(ret));
612
599
gnutls_deinit(*session);
613
600
return -1;
614
601
}
659
646
pf = PF_INET;
660
647
break;
661
648
default:
662
fprintf(stderr, "Mandos plugin mandos-client: "
663
"Bad address family: %d\n", af);
649
fprintf_plus(stderr, "Bad address family: %d\n", af);
664
650
errno = EINVAL;
665
651
return -1;
666
652
}
671
657
}
672
658
673
659
if(debug){
674
fprintf(stderr, "Mandos plugin mandos-client: "
675
"Setting up a TCP connection to %s, port %" PRIu16
676
"\n", ip, port);
660
fprintf_plus(stderr, "Setting up a TCP connection to %s, port %"
661
PRIu16 "\n", ip, port);
677
662
}
678
663
679
664
tcp_sd = socket(pf, SOCK_STREAM, 0);
705
690
}
706
691
if(ret == 0){
707
692
int e = errno;
708
fprintf(stderr, "Mandos plugin mandos-client: "
709
"Bad address: %s\n", ip);
693
fprintf_plus(stderr, "Bad address: %s\n", ip);
710
694
errno = e;
711
695
goto mandos_end;
712
696
}
717
701
718
702
if(IN6_IS_ADDR_LINKLOCAL /* Spurious warnings from */
719
703
(&to.in6.sin6_addr)){ /* -Wstrict-aliasing=2 or lower and
720
-Wunreachable-code*/
704
-Wunreachable-code*/
721
705
if(if_index == AVAHI_IF_UNSPEC){
722
fprintf(stderr, "Mandos plugin mandos-client: "
723
"An IPv6 link-local address is incomplete"
724
" without a network interface\n");
706
fprintf_plus(stderr, "An IPv6 link-local address is"
707
" incomplete without a network interface\n");
725
708
errno = EINVAL;
726
709
goto mandos_end;
727
710
}
745
728
if(if_indextoname((unsigned int)if_index, interface) == NULL){
746
729
perror_plus("if_indextoname");
747
730
} else {
748
fprintf(stderr, "Mandos plugin mandos-client: "
749
"Connection to: %s%%%s, port %" PRIu16 "\n",
750
ip, interface, port);
731
fprintf_plus(stderr, "Connection to: %s%%%s, port %" PRIu16
732
"\n", ip, interface, port);
751
733
}
752
734
} else {
753
fprintf(stderr, "Mandos plugin mandos-client: "
754
"Connection to: %s, port %" PRIu16 "\n", ip, port);
735
fprintf_plus(stderr, "Connection to: %s, port %" PRIu16 "\n",
736
ip, port);
755
737
}
756
738
char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
757
739
INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
767
749
perror_plus("inet_ntop");
768
750
} else {
769
751
if(strcmp(addrstr, ip) != 0){
770
fprintf(stderr, "Mandos plugin mandos-client: "
771
"Canonical address form: %s\n", addrstr);
752
fprintf_plus(stderr, "Canonical address form: %s\n", addrstr);
772
753
}
773
754
}
774
755
}
802
783
while(true){
803
784
size_t out_size = strlen(out);
804
785
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
805
out_size - written));
786
out_size - written));
806
787
if(ret == -1){
807
788
int e = errno;
808
789
perror_plus("write");
828
809
}
829
810
830
811
if(debug){
831
fprintf(stderr, "Mandos plugin mandos-client: "
832
"Establishing TLS session with %s\n", ip);
812
fprintf_plus(stderr, "Establishing TLS session with %s\n", ip);
833
813
}
834
814
835
815
if(quit_now){
855
835
856
836
if(ret != GNUTLS_E_SUCCESS){
857
837
if(debug){
858
fprintf(stderr, "Mandos plugin mandos-client: "
859
"*** GnuTLS Handshake failed ***\n");
838
fprintf_plus(stderr, "*** GnuTLS Handshake failed ***\n");
860
839
gnutls_perror(ret);
861
840
}
862
841
errno = EPROTO;
866
845
/* Read OpenPGP packet that contains the wanted password */
867
846
868
847
if(debug){
869
fprintf(stderr, "Mandos plugin mandos-client: "
870
"Retrieving OpenPGP encrypted password from %s\n", ip);
848
fprintf_plus(stderr, "Retrieving OpenPGP encrypted password from"
849
" %s\n", ip);
871
850
}
872
851
873
852
while(true){
878
857
}
879
858
880
859
buffer_capacity = incbuffer(&buffer, buffer_length,
881
buffer_capacity);
860
buffer_capacity);
882
861
if(buffer_capacity == 0){
883
862
int e = errno;
884
863
perror_plus("incbuffer");
911
890
}
912
891
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
913
892
if(ret < 0){
914
fprintf(stderr, "Mandos plugin mandos-client: "
915
"*** GnuTLS Re-handshake failed ***\n");
893
fprintf_plus(stderr, "*** GnuTLS Re-handshake failed "
894
"***\n");
916
895
gnutls_perror(ret);
917
896
errno = EPROTO;
918
897
goto mandos_end;
919
898
}
920
899
break;
921
900
default:
922
fprintf(stderr, "Mandos plugin mandos-client: "
923
"Unknown error while reading data from"
924
" encrypted session with Mandos server\n");
901
fprintf_plus(stderr, "Unknown error while reading data from"
902
" encrypted session with Mandos server\n");
925
903
gnutls_bye(session, GNUTLS_SHUT_RDWR);
926
904
errno = EIO;
927
905
goto mandos_end;
932
910
}
933
911
934
912
if(debug){
935
fprintf(stderr, "Mandos plugin mandos-client: "
936
"Closing TLS session\n");
913
fprintf_plus(stderr, "Closing TLS session\n");
937
914
}
938
915
939
916
if(quit_now){
951
928
952
929
if(buffer_length > 0){
953
930
ssize_t decrypted_buffer_size;
954
decrypted_buffer_size = pgp_packet_decrypt(buffer,
955
buffer_length,
931
decrypted_buffer_size = pgp_packet_decrypt(buffer, buffer_length,
956
932
&decrypted_buffer);
957
933
if(decrypted_buffer_size >= 0){
958
934
969
945
if(ret == 0 and ferror(stdout)){
970
946
int e = errno;
971
947
if(debug){
972
fprintf(stderr, "Mandos plugin mandos-client: "
973
"Error writing encrypted data: %s\n",
974
strerror(errno));
948
fprintf_plus(stderr, "Error writing encrypted data: %s\n",
949
strerror(errno));
975
950
}
976
951
errno = e;
977
952
goto mandos_end;
1034
1009
switch(event){
1035
1010
default:
1036
1011
case AVAHI_RESOLVER_FAILURE:
1037
fprintf(stderr, "Mandos plugin mandos-client: "
1038
"(Avahi Resolver) Failed to resolve service '%s'"
1039
" of type '%s' in domain '%s': %s\n", name, type, domain,
1040
avahi_strerror(avahi_server_errno(mc.server)));
1012
fprintf_plus(stderr, "(Avahi Resolver) Failed to resolve service "
1013
"'%s' of type '%s' in domain '%s': %s\n", name, type,
1014
domain,
1015
avahi_strerror(avahi_server_errno(mc.server)));
1041
1016
break;
1042
1017
1043
1018
case AVAHI_RESOLVER_FOUND:
1045
1020
char ip[AVAHI_ADDRESS_STR_MAX];
1046
1021
avahi_address_snprint(ip, sizeof(ip), address);
1047
1022
if(debug){
1048
fprintf(stderr, "Mandos plugin mandos-client: "
1049
"Mandos server \"%s\" found on %s (%s, %"
1050
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
1051
ip, (intmax_t)interface, port);
1023
fprintf_plus(stderr, "Mandos server \"%s\" found on %s (%s, %"
1024
PRIdMAX ") on port %" PRIu16 "\n", name,
1025
host_name, ip, (intmax_t)interface, port);
1052
1026
}
1053
1027
int ret = start_mandos_communication(ip, port, interface,
1054
1028
avahi_proto_to_af(proto));
1086
1060
default:
1087
1061
case AVAHI_BROWSER_FAILURE:
1088
1062
1089
fprintf(stderr, "Mandos plugin mandos-client: "
1090
"(Avahi browser) %s\n",
1091
avahi_strerror(avahi_server_errno(mc.server)));
1063
fprintf_plus(stderr, "(Avahi browser) %s\n",
1064
avahi_strerror(avahi_server_errno(mc.server)));
1092
1065
avahi_simple_poll_quit(mc.simple_poll);
1093
1066
return;
1094
1067
1101
1074
if(avahi_s_service_resolver_new(mc.server, interface, protocol,
1102
1075
name, type, domain, protocol, 0,
1103
1076
resolve_callback, NULL) == NULL)
1104
fprintf(stderr, "Mandos plugin mandos-client: "
1105
"Avahi: Failed to resolve service '%s': %s\n",
1106
name, avahi_strerror(avahi_server_errno(mc.server)));
1077
fprintf_plus(stderr, "Avahi: Failed to resolve service '%s':"
1078
" %s\n", name,
1079
avahi_strerror(avahi_server_errno(mc.server)));
1107
1080
break;
1108
1081
1109
1082
case AVAHI_BROWSER_REMOVE:
1112
1085
case AVAHI_BROWSER_ALL_FOR_NOW:
1113
1086
case AVAHI_BROWSER_CACHE_EXHAUSTED:
1114
1087
if(debug){
1115
fprintf(stderr, "Mandos plugin mandos-client: "
1116
"No Mandos server found, still searching...\n");
1088
fprintf_plus(stderr, "No Mandos server found, still"
1089
" searching...\n");
1117
1090
}
1118
1091
break;
1119
1092
}
1158
1131
/* Reject the loopback device */
1159
1132
if(ifr->ifr_flags & IFF_LOOPBACK){
1160
1133
if(debug){
1161
fprintf(stderr, "Mandos plugin mandos-client: "
1162
"Rejecting loopback interface \"%s\"\n", ifname);
1134
fprintf_plus(stderr, "Rejecting loopback interface \"%s\"\n",
1135
ifname);
1163
1136
}
1164
1137
return false;
1165
1138
}
1166
1139
/* Accept point-to-point devices only if connect_to is specified */
1167
1140
if(connect_to != NULL and (ifr->ifr_flags & IFF_POINTOPOINT)){
1168
1141
if(debug){
1169
fprintf(stderr, "Mandos plugin mandos-client: "
1170
"Accepting point-to-point interface \"%s\"\n", ifname);
1142
fprintf_plus(stderr, "Accepting point-to-point interface"
1143
" \"%s\"\n", ifname);
1171
1144
}
1172
1145
return true;
1173
1146
}
1174
1147
/* Otherwise, reject non-broadcast-capable devices */
1175
1148
if(not (ifr->ifr_flags & IFF_BROADCAST)){
1176
1149
if(debug){
1177
fprintf(stderr, "Mandos plugin mandos-client: "
1178
"Rejecting non-broadcast interface \"%s\"\n", ifname);
1150
fprintf_plus(stderr, "Rejecting non-broadcast interface"
1151
" \"%s\"\n", ifname);
1179
1152
}
1180
1153
return false;
1181
1154
}
1182
1155
/* Reject non-ARP interfaces (including dummy interfaces) */
1183
1156
if(ifr->ifr_flags & IFF_NOARP){
1184
1157
if(debug){
1185
fprintf(stderr, "Mandos plugin mandos-client: "
1186
"Rejecting non-ARP interface \"%s\"\n", ifname);
1158
fprintf_plus(stderr, "Rejecting non-ARP interface \"%s\"\n",
1159
ifname);
1187
1160
}
1188
1161
return false;
1189
1162
}
1190
1163
1191
1164
/* Accept this device */
1192
1165
if(debug){
1193
fprintf(stderr, "Mandos plugin mandos-client: "
1194
"Interface \"%s\" is good\n", ifname);
1166
fprintf_plus(stderr, "Interface \"%s\" is good\n", ifname);
1195
1167
}
1196
1168
return true;
1197
1169
}
1209
1181
struct ifreq ifr;
1210
1182
if(not get_flags(if_entry->d_name, &ifr)){
1211
1183
if(debug){
1212
fprintf(stderr, "Mandos plugin mandos-client: "
1213
"Failed to get flags for interface \"%s\"\n",
1214
if_entry->d_name);
1184
fprintf_plus(stderr, "Failed to get flags for interface "
1185
"\"%s\"\n", if_entry->d_name);
1215
1186
}
1216
1187
return 0;
1217
1188
}
1235
1206
struct ifreq ifr;
1236
1207
if(not get_flags(if_entry->d_name, &ifr)){
1237
1208
if(debug){
1238
fprintf(stderr, "Mandos plugin mandos-client: "
1239
"Failed to get flags for interface \"%s\"\n",
1240
if_entry->d_name);
1209
fprintf_plus(stderr, "Failed to get flags for interface "
1210
"\"%s\"\n", if_entry->d_name);
1241
1211
}
1242
1212
return 0;
1243
1213
}
1245
1215
/* Reject down interfaces */
1246
1216
if(not (ifr.ifr_flags & IFF_UP)){
1247
1217
if(debug){
1248
fprintf(stderr, "Mandos plugin mandos-client: "
1249
"Rejecting down interface \"%s\"\n",
1250
if_entry->d_name);
1218
fprintf_plus(stderr, "Rejecting down interface \"%s\"\n",
1219
if_entry->d_name);
1251
1220
}
1252
1221
return 0;
1253
1222
}
1255
1224
/* Reject non-running interfaces */
1256
1225
if(not (ifr.ifr_flags & IFF_RUNNING)){
1257
1226
if(debug){
1258
fprintf(stderr, "Mandos plugin mandos-client: "
1259
"Rejecting non-running interface \"%s\"\n",
1260
if_entry->d_name);
1227
fprintf_plus(stderr, "Rejecting non-running interface \"%s\"\n",
1228
if_entry->d_name);
1261
1229
}
1262
1230
return 0;
1263
1231
}
1282
1250
/* Is this directory entry a runnable program? */
1283
1251
int runnable_hook(const struct dirent *direntry){
1284
1252
int ret;
1253
size_t sret;
1285
1254
struct stat st;
1286
1255
1287
1256
if((direntry->d_name)[0] == '\0'){
1289
1258
return 0;
1290
1259
}
1291
1260
1292
/* Save pointer to last character */
1293
char *end = strchr(direntry->d_name, '\0')-1;
1294
1295
if(*end == '~'){
1296
/* Backup name~ */
1297
return 0;
1298
}
1299
1300
if(((direntry->d_name)[0] == '#')
1301
and (*end == '#')){
1302
/* Temporary #name# */
1303
return 0;
1304
}
1305
1306
/* XXX more rules here */
1261
sret = strspn(direntry->d_name, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1262
"abcdefghijklmnopqrstuvwxyz"
1263
"0123456789"
1264
"_-");
1265
if((direntry->d_name)[sret] != '\0'){
1266
/* Contains non-allowed characters */
1267
if(debug){
1268
fprintf_plus(stderr, "Ignoring hook \"%s\" with bad name\n",
1269
direntry->d_name);
1270
}
1271
return 0;
1272
}
1307
1273
1308
1274
char *fullname = NULL;
1309
ret = asprintf(&fullname, "%s/%s", hookdir,
1310
direntry->d_name);
1275
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1311
1276
if(ret < 0){
1312
1277
perror_plus("asprintf");
1313
1278
return 0;
1316
1281
ret = stat(fullname, &st);
1317
1282
if(ret == -1){
1318
1283
if(debug){
1319
perror_plus("Could not stat plugin");
1284
perror_plus("Could not stat hook");
1320
1285
}
1321
1286
return 0;
1322
1287
}
1323
1288
if(not (S_ISREG(st.st_mode))){
1324
1289
/* Not a regular file */
1290
if(debug){
1291
fprintf_plus(stderr, "Ignoring hook \"%s\" - not a file\n",
1292
direntry->d_name);
1293
}
1325
1294
return 0;
1326
1295
}
1327
1296
if(not (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))){
1328
1297
/* Not executable */
1298
if(debug){
1299
fprintf_plus(stderr, "Ignoring hook \"%s\" - not executable\n",
1300
direntry->d_name);
1301
}
1329
1302
return 0;
1330
1303
}
1331
1304
return 1;
1340
1313
while(true){
1341
1314
if(mc.current_server == NULL){
1342
1315
if (debug){
1343
fprintf(stderr, "Mandos plugin mandos-client: "
1344
"Wait until first server is found. No timeout!\n");
1316
fprintf_plus(stderr, "Wait until first server is found."
1317
" No timeout!\n");
1345
1318
}
1346
1319
ret = avahi_simple_poll_iterate(s, -1);
1347
1320
} else {
1348
1321
if (debug){
1349
fprintf(stderr, "Mandos plugin mandos-client: "
1350
"Check current_server if we should run it,"
1351
" or wait\n");
1322
fprintf_plus(stderr, "Check current_server if we should run"
1323
" it, or wait\n");
1352
1324
}
1353
1325
/* the current time */
1354
1326
ret = clock_gettime(CLOCK_MONOTONIC, &now);
1370
1342
- ((intmax_t)waited_time.tv_nsec / 1000000));
1371
1343
1372
1344
if (debug){
1373
fprintf(stderr, "Mandos plugin mandos-client: "
1374
"Blocking for %" PRIdMAX " ms\n", block_time);
1345
fprintf_plus(stderr, "Blocking for %" PRIdMAX " ms\n",
1346
block_time);
1375
1347
}
1376
1348
1377
1349
if(block_time <= 0){
1404
1376
}
1405
1377
}
1406
1378
1379
bool run_network_hooks(const char *mode, const char *interface,
1380
const float delay){
1381
struct dirent **direntries;
1382
struct dirent *direntry;
1383
int ret;
1384
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1385
alphasort);
1386
if(numhooks == -1){
1387
perror_plus("scandir");
1388
} else {
1389
int devnull = open("/dev/null", O_RDONLY);
1390
for(int i = 0; i < numhooks; i++){
1391
direntry = direntries[0];
1392
char *fullname = NULL;
1393
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1394
if(ret < 0){
1395
perror_plus("asprintf");
1396
continue;
1397
}
1398
pid_t hook_pid = fork();
1399
if(hook_pid == 0){
1400
/* Child */
1401
dup2(devnull, STDIN_FILENO);
1402
close(devnull);
1403
dup2(STDERR_FILENO, STDOUT_FILENO);
1404
ret = setenv("MANDOSNETHOOKDIR", hookdir, 1);
1405
if(ret == -1){
1406
perror_plus("setenv");
1407
return false;
1408
}
1409
ret = setenv("DEVICE", interface, 1);
1410
if(ret == -1){
1411
perror_plus("setenv");
1412
return false;
1413
}
1414
ret = setenv("VERBOSE", debug ? "1" : "0", 1);
1415
if(ret == -1){
1416
perror_plus("setenv");
1417
return false;
1418
}
1419
ret = setenv("MODE", mode, 1);
1420
if(ret == -1){
1421
perror_plus("setenv");
1422
return false;
1423
}
1424
char *delaystring;
1425
ret = asprintf(&delaystring, "%f", delay);
1426
if(ret == -1){
1427
perror_plus("asprintf");
1428
return false;
1429
}
1430
ret = setenv("DELAY", delaystring, 1);
1431
if(ret == -1){
1432
free(delaystring);
1433
perror_plus("setenv");
1434
return false;
1435
}
1436
free(delaystring);
1437
ret = execl(fullname, direntry->d_name, mode, NULL);
1438
perror_plus("execl");
1439
} else {
1440
int status;
1441
if(TEMP_FAILURE_RETRY(waitpid(hook_pid, &status, 0)) == -1){
1442
perror_plus("waitpid");
1443
free(fullname);
1444
continue;
1445
}
1446
if(WIFEXITED(status)){
1447
if(WEXITSTATUS(status) != 0){
1448
fprintf_plus(stderr, "Warning: network hook \"%s\" exited"
1449
" with status %d\n", direntry->d_name,
1450
WEXITSTATUS(status));
1451
free(fullname);
1452
continue;
1453
}
1454
} else if(WIFSIGNALED(status)){
1455
fprintf_plus(stderr, "Warning: network hook \"%s\" died by"
1456
" signal %d\n", direntry->d_name,
1457
WTERMSIG(status));
1458
free(fullname);
1459
continue;
1460
} else {
1461
fprintf_plus(stderr, "Warning: network hook \"%s\""
1462
" crashed\n", direntry->d_name);
1463
free(fullname);
1464
continue;
1465
}
1466
}
1467
free(fullname);
1468
if(quit_now){
1469
break;
1470
}
1471
}
1472
close(devnull);
1473
}
1474
return true;
1475
}
1476
1407
1477
int main(int argc, char *argv[]){
1408
1478
AvahiSServiceBrowser *sb = NULL;
1409
1479
int error;
1567
1637
argp_state_help(state, state->out_stream,
1568
1638
ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);
1569
1639
case 'V': /* --version */
1570
fprintf(state->out_stream, "Mandos plugin mandos-client: ");
1571
fprintf(state->out_stream, "%s\n", argp_program_version);
1640
fprintf_plus(state->out_stream,
1641
"Mandos plugin mandos-client: ");
1642
fprintf_plus(state->out_stream, "%s\n", argp_program_version);
1572
1643
exit(argp_err_exit_status);
1573
1644
break;
1574
1645
default:
1619
1690
if(ret == -1){
1620
1691
perror_plus("fstat");
1621
1692
} else {
1622
if(S_ISREG(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
1693
if(S_ISREG(st.st_mode)
1694
and st.st_uid == 0 and st.st_gid == 0){
1623
1695
ret = fchown(seckey_fd, uid, gid);
1624
1696
if(ret == -1){
1625
1697
perror_plus("fchown");
1639
1711
if(ret == -1){
1640
1712
perror_plus("fstat");
1641
1713
} else {
1642
if(S_ISREG(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
1714
if(S_ISREG(st.st_mode)
1715
and st.st_uid == 0 and st.st_gid == 0){
1643
1716
ret = fchown(pubkey_fd, uid, gid);
1644
1717
if(ret == -1){
1645
1718
perror_plus("fchown");
1658
1731
}
1659
1732
}
1660
1733
1661
/* Find network hooks and run them */
1734
/* Run network hooks */
1662
1735
{
1663
struct dirent **direntries;
1664
struct dirent *direntry;
1665
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1666
alphasort);
1667
if(numhooks == -1){
1668
perror_plus("scandir");
1669
} else {
1670
int devnull = open("/dev/null", O_RDONLY);
1671
for(int i = 0; i < numhooks; i++){
1672
direntry = direntries[0];
1673
char *fullname = NULL;
1674
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1675
if(ret < 0){
1676
perror_plus("asprintf");
1677
continue;
1678
}
1679
pid_t hook_pid = fork();
1680
if(hook_pid == 0){
1681
/* Child */
1682
dup2(devnull, STDIN_FILENO);
1683
close(devnull);
1684
dup2(STDERR_FILENO, STDOUT_FILENO);
1685
ret = setenv("DEVICE", interface, 1);
1686
if(ret == -1){
1687
perror_plus("setenv");
1688
exit(1);
1689
}
1690
ret = setenv("VERBOSE", debug ? "1" : "0", 1);
1691
if(ret == -1){
1692
perror_plus("setenv");
1693
exit(1);
1694
}
1695
ret = setenv("MODE", "start", 1);
1696
if(ret == -1){
1697
perror_plus("setenv");
1698
exit(1);
1699
}
1700
char *delaystring;
1701
ret = asprintf(&delaystring, "%f", delay);
1702
if(ret == -1){
1703
perror_plus("asprintf");
1704
exit(1);
1705
}
1706
ret = setenv("DELAY", delaystring, 1);
1707
if(ret == -1){
1708
free(delaystring);
1709
perror_plus("setenv");
1710
exit(1);
1711
}
1712
free(delaystring);
1713
ret = execl(fullname, direntry->d_name, "start", NULL);
1714
perror_plus("execl");
1715
} else {
1716
int status;
1717
if(TEMP_FAILURE_RETRY(waitpid(hook_pid, &status, 0)) == -1){
1718
perror_plus("waitpid");
1719
free(fullname);
1720
continue;
1721
}
1722
if(WIFEXITED(status)){
1723
if(WEXITSTATUS(status) != 0){
1724
fprintf(stderr, "Mandos plugin mandos-client: "
1725
"Warning: network hook \"%s\" exited"
1726
" with status %d\n", direntry->d_name,
1727
WEXITSTATUS(status));
1728
free(fullname);
1729
continue;
1730
}
1731
} else if(WIFSIGNALED(status)){
1732
fprintf(stderr, "Mandos plugin mandos-client: "
1733
"Warning: network hook \"%s\" died by"
1734
" signal %d\n", direntry->d_name,
1735
WTERMSIG(status));
1736
free(fullname);
1737
continue;
1738
} else {
1739
fprintf(stderr, "Mandos plugin mandos-client: "
1740
"Warning: network hook \"%s\" crashed\n",
1741
direntry->d_name);
1742
free(fullname);
1743
continue;
1744
}
1745
}
1746
free(fullname);
1747
if(quit_now){
1748
goto end;
1749
}
1750
}
1751
close(devnull);
1736
/* Re-raise priviliges */
1737
errno = 0;
1738
ret = seteuid(0);
1739
if(ret == -1){
1740
perror_plus("seteuid");
1741
}
1742
if(not run_network_hooks("start", interface, delay)){
1743
goto end;
1744
}
1745
/* Lower privileges */
1746
errno = 0;
1747
ret = seteuid(uid);
1748
if(ret == -1){
1749
perror_plus("seteuid");
1752
1750
}
1753
1751
}
1754
1752
1771
1769
/* Pick the first interface returned */
1772
1770
interface = strdup(direntries[0]->d_name);
1773
1771
if(debug){
1774
fprintf(stderr, "Mandos plugin mandos-client: "
1775
"Using interface \"%s\"\n", interface);
1772
fprintf_plus(stderr, "Using interface \"%s\"\n", interface);
1776
1773
}
1777
1774
if(interface == NULL){
1778
1775
perror_plus("malloc");
1783
1780
free(direntries);
1784
1781
} else {
1785
1782
free(direntries);
1786
fprintf(stderr, "Mandos plugin mandos-client: "
1787
"Could not find a network interface\n");
1783
fprintf_plus(stderr, "Could not find a network interface\n");
1788
1784
exitcode = EXIT_FAILURE;
1789
1785
goto end;
1790
1786
}
1796
1792
srand((unsigned int) time(NULL));
1797
1793
mc.simple_poll = avahi_simple_poll_new();
1798
1794
if(mc.simple_poll == NULL){
1799
fprintf(stderr, "Mandos plugin mandos-client: "
1800
"Avahi: Failed to create simple poll object.\n");
1795
fprintf_plus(stderr,
1796
"Avahi: Failed to create simple poll object.\n");
1801
1797
exitcode = EX_UNAVAILABLE;
1802
1798
goto end;
1803
1799
}
1869
1865
if(strcmp(interface, "none") != 0){
1870
1866
if_index = (AvahiIfIndex) if_nametoindex(interface);
1871
1867
if(if_index == 0){
1872
fprintf(stderr, "Mandos plugin mandos-client: "
1873
"No such interface: \"%s\"\n", interface);
1868
fprintf_plus(stderr, "No such interface: \"%s\"\n", interface);
1874
1869
exitcode = EX_UNAVAILABLE;
1875
1870
goto end;
1876
1871
}
1996
1991
#endif /* __linux__ */
1997
1992
/* Lower privileges */
1998
1993
errno = 0;
1999
if(take_down_interface){
2000
/* Lower privileges */
2001
ret = seteuid(uid);
2002
if(ret == -1){
2003
perror_plus("seteuid");
2004
}
2005
} else {
2006
/* Lower privileges permanently */
2007
ret = setuid(uid);
2008
if(ret == -1){
2009
perror_plus("setuid");
2010
}
1994
/* Lower privileges */
1995
ret = seteuid(uid);
1996
if(ret == -1){
1997
perror_plus("seteuid");
2011
1998
}
2012
1999
}
2013
2000
2017
2004
2018
2005
ret = init_gnutls_global(pubkey, seckey);
2019
2006
if(ret == -1){
2020
fprintf(stderr, "Mandos plugin mandos-client: "
2021
"init_gnutls_global failed\n");
2007
fprintf_plus(stderr, "init_gnutls_global failed\n");
2022
2008
exitcode = EX_UNAVAILABLE;
2023
2009
goto end;
2024
2010
} else {
2040
2026
}
2041
2027
2042
2028
if(not init_gpgme(pubkey, seckey, tempdir)){
2043
fprintf(stderr, "Mandos plugin mandos-client: "
2044
"init_gpgme failed\n");
2029
fprintf_plus(stderr, "init_gpgme failed\n");
2045
2030
exitcode = EX_UNAVAILABLE;
2046
2031
goto end;
2047
2032
} else {
2057
2042
/* (Mainly meant for debugging) */
2058
2043
char *address = strrchr(connect_to, ':');
2059
2044
if(address == NULL){
2060
fprintf(stderr, "Mandos plugin mandos-client: "
2061
"No colon in address\n");
2045
fprintf_plus(stderr, "No colon in address\n");
2062
2046
exitcode = EX_USAGE;
2063
2047
goto end;
2064
2048
}
2072
2056
tmpmax = strtoimax(address+1, &tmp, 10);
2073
2057
if(errno != 0 or tmp == address+1 or *tmp != '\0'
2074
2058
or tmpmax != (uint16_t)tmpmax){
2075
fprintf(stderr, "Mandos plugin mandos-client: "
2076
"Bad port number\n");
2059
fprintf_plus(stderr, "Bad port number\n");
2077
2060
exitcode = EX_USAGE;
2078
2061
goto end;
2079
2062
}
2109
2092
break;
2110
2093
}
2111
2094
if(debug){
2112
fprintf(stderr, "Mandos plugin mandos-client: "
2113
"Retrying in %d seconds\n", (int)retry_interval);
2095
fprintf_plus(stderr, "Retrying in %d seconds\n",
2096
(int)retry_interval);
2114
2097
}
2115
2098
sleep((int)retry_interval);
2116
2099
}
2146
2129
2147
2130
/* Check if creating the Avahi server object succeeded */
2148
2131
if(mc.server == NULL){
2149
fprintf(stderr, "Mandos plugin mandos-client: "
2150
"Failed to create Avahi server: %s\n",
2151
avahi_strerror(error));
2132
fprintf_plus(stderr, "Failed to create Avahi server: %s\n",
2133
avahi_strerror(error));
2152
2134
exitcode = EX_UNAVAILABLE;
2153
2135
goto end;
2154
2136
}
2162
2144
AVAHI_PROTO_UNSPEC, "_mandos._tcp",
2163
2145
NULL, 0, browse_callback, NULL);
2164
2146
if(sb == NULL){
2165
fprintf(stderr, "Mandos plugin mandos-client: "
2166
"Failed to create service browser: %s\n",
2167
avahi_strerror(avahi_server_errno(mc.server)));
2147
fprintf_plus(stderr, "Failed to create service browser: %s\n",
2148
avahi_strerror(avahi_server_errno(mc.server)));
2168
2149
exitcode = EX_UNAVAILABLE;
2169
2150
goto end;
2170
2151
}
2176
2157
/* Run the main loop */
2177
2158
2178
2159
if(debug){
2179
fprintf(stderr, "Mandos plugin mandos-client: "
2180
"Starting Avahi loop search\n");
2160
fprintf_plus(stderr, "Starting Avahi loop search\n");
2181
2161
}
2182
2162
2183
2163
ret = avahi_loop_with_timeout(mc.simple_poll,
2184
2164
(int)(retry_interval * 1000));
2185
2165
if(debug){
2186
fprintf(stderr, "Mandos plugin mandos-client: "
2187
"avahi_loop_with_timeout exited %s\n",
2188
(ret == 0) ? "successfully" : "with error");
2166
fprintf_plus(stderr, "avahi_loop_with_timeout exited %s\n",
2167
(ret == 0) ? "successfully" : "with error");
2189
2168
}
2190
2169
2191
2170
end:
2192
2171
2193
2172
if(debug){
2194
fprintf(stderr, "Mandos plugin mandos-client: "
2195
"%s exiting\n", argv[0]);
2173
fprintf_plus(stderr, "%s exiting\n", argv[0]);
2196
2174
}
2197
2175
2198
2176
/* Cleanup things */
2226
2204
}
2227
2205
}
2228
2206
2229
/* XXX run network hooks "stop" here */
2230
2231
/* Take down the network interface */
2232
if(take_down_interface){
2233
/* Re-raise priviliges */
2207
/* Re-raise priviliges */
2208
{
2234
2209
errno = 0;
2235
2210
ret = seteuid(0);
2236
2211
if(ret == -1){
2237
2212
perror_plus("seteuid");
2238
2213
}
2239
if(geteuid() == 0){
2214
/* Run network hooks */
2215
if(not run_network_hooks("stop", interface, delay)){
2216
goto end;
2217
}
2218
2219
/* Take down the network interface */
2220
if(take_down_interface and geteuid() == 0){
2240
2221
ret = ioctl(sd, SIOCGIFFLAGS, &network);
2241
2222
if(ret == -1){
2242
2223
perror_plus("ioctl SIOCGIFFLAGS");
2251
2232
if(ret == -1){
2252
2233
perror_plus("close");
2253
2234
}
2254
/* Lower privileges permanently */
2255
errno = 0;
2256
ret = setuid(uid);
2257
if(ret == -1){
2258
perror_plus("setuid");
2259
}
2260
2235
}
2261
2236
}
2237
/* Lower privileges permanently */
2238
errno = 0;
2239
ret = setuid(uid);
2240
if(ret == -1){
2241
perror_plus("setuid");
2242
}
2262
2243
2263
2244
/* Removes the GPGME temp directory and all files inside */
2264
2245
if(tempdir_created){
2278
2259
}
2279
2260
ret = remove(fullname);
2280
2261
if(ret == -1){
2281
fprintf(stderr, "Mandos plugin mandos-client: "
2282
"remove(\"%s\"): %s\n", fullname, strerror(errno));
2262
fprintf_plus(stderr, "remove(\"%s\"): %s\n", fullname,
2263
strerror(errno));
2283
2264
}
2284
2265
free(fullname);
2285
2266
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0