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- Committer: teddy at bsnet
- Date: 2011-11-12 17:43:12 UTC
- mto: (505.2.5 mandos-client-network-hooks)
- mto: This revision was merged to the branch mainline in revision 525.
- Revision ID: teddy@fukt.bsnet.se-20111112174312-a227djujmo3oxw9m
* plugins.d/mandos-client.c (runnable_hook): Bug fix: stat using the
full path.
(mail): Take new "--network-hook-dir" option.
full path.
(mail): Take new "--network-hook-dir" option.
- files removed:
- 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
186
177
/*
187
178
* Make additional room in "buffer" for at least BUFFER_SIZE more
188
179
* bytes. "buffer_capacity" is how much is currently allocated,
189
180
* "buffer_length" is how much is already used.
190
181
*/
191
182
size_t incbuffer(char **buffer, size_t buffer_length,
192
size_t buffer_capacity){
183
size_t buffer_capacity){
193
184
if(buffer_length + BUFFER_SIZE > buffer_capacity){
194
185
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
195
186
if(buffer == NULL){
201
192
}
202
193
203
194
/* Add server to set of servers to retry periodically */
204
int add_server(const char *ip, uint16_t port, AvahiIfIndex if_index,
205
int af){
195
int add_server(const char *ip, uint16_t port,
196
AvahiIfIndex if_index,
197
int af){
206
198
int ret;
207
199
server *new_server = malloc(sizeof(server));
208
200
if(new_server == NULL){
210
202
return -1;
211
203
}
212
204
*new_server = (server){ .ip = strdup(ip),
213
.port = port,
214
.if_index = if_index,
215
.af = af };
205
.port = port,
206
.if_index = if_index,
207
.af = af };
216
208
if(new_server->ip == NULL){
217
209
perror_plus("strdup");
218
210
return -1;
240
232
/*
241
233
* Initialize GPGME.
242
234
*/
243
static bool init_gpgme(const char *seckey, const char *pubkey,
244
const char *tempdir){
235
static bool init_gpgme(const char *seckey,
236
const char *pubkey, const char *tempdir){
245
237
gpgme_error_t rc;
246
238
gpgme_engine_info_t engine_info;
247
239
262
254
263
255
rc = gpgme_data_new_from_fd(&pgp_data, fd);
264
256
if(rc != GPG_ERR_NO_ERROR){
265
fprintf_plus(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
266
gpgme_strsource(rc), gpgme_strerror(rc));
257
fprintf(stderr, "Mandos plugin mandos-client: "
258
"bad gpgme_data_new_from_fd: %s: %s\n",
259
gpgme_strsource(rc), gpgme_strerror(rc));
267
260
return false;
268
261
}
269
262
270
263
rc = gpgme_op_import(mc.ctx, pgp_data);
271
264
if(rc != GPG_ERR_NO_ERROR){
272
fprintf_plus(stderr, "bad gpgme_op_import: %s: %s\n",
273
gpgme_strsource(rc), gpgme_strerror(rc));
265
fprintf(stderr, "Mandos plugin mandos-client: "
266
"bad gpgme_op_import: %s: %s\n",
267
gpgme_strsource(rc), gpgme_strerror(rc));
274
268
return false;
275
269
}
276
270
283
277
}
284
278
285
279
if(debug){
286
fprintf_plus(stderr, "Initializing GPGME\n");
280
fprintf(stderr, "Mandos plugin mandos-client: "
281
"Initializing GPGME\n");
287
282
}
288
283
289
284
/* Init GPGME */
290
285
gpgme_check_version(NULL);
291
286
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
292
287
if(rc != GPG_ERR_NO_ERROR){
293
fprintf_plus(stderr, "bad gpgme_engine_check_version: %s: %s\n",
294
gpgme_strsource(rc), gpgme_strerror(rc));
288
fprintf(stderr, "Mandos plugin mandos-client: "
289
"bad gpgme_engine_check_version: %s: %s\n",
290
gpgme_strsource(rc), gpgme_strerror(rc));
295
291
return false;
296
292
}
297
293
298
294
/* Set GPGME home directory for the OpenPGP engine only */
299
295
rc = gpgme_get_engine_info(&engine_info);
300
296
if(rc != GPG_ERR_NO_ERROR){
301
fprintf_plus(stderr, "bad gpgme_get_engine_info: %s: %s\n",
302
gpgme_strsource(rc), gpgme_strerror(rc));
297
fprintf(stderr, "Mandos plugin mandos-client: "
298
"bad gpgme_get_engine_info: %s: %s\n",
299
gpgme_strsource(rc), gpgme_strerror(rc));
303
300
return false;
304
301
}
305
302
while(engine_info != NULL){
311
308
engine_info = engine_info->next;
312
309
}
313
310
if(engine_info == NULL){
314
fprintf_plus(stderr, "Could not set GPGME home dir to %s\n",
315
tempdir);
311
fprintf(stderr, "Mandos plugin mandos-client: "
312
"Could not set GPGME home dir to %s\n", tempdir);
316
313
return false;
317
314
}
318
315
319
316
/* Create new GPGME "context" */
320
317
rc = gpgme_new(&(mc.ctx));
321
318
if(rc != GPG_ERR_NO_ERROR){
322
fprintf_plus(stderr, "Mandos plugin mandos-client: "
323
"bad gpgme_new: %s: %s\n", gpgme_strsource(rc),
324
gpgme_strerror(rc));
319
fprintf(stderr, "Mandos plugin mandos-client: "
320
"bad gpgme_new: %s: %s\n", gpgme_strsource(rc),
321
gpgme_strerror(rc));
325
322
return false;
326
323
}
327
324
346
343
ssize_t plaintext_length = 0;
347
344
348
345
if(debug){
349
fprintf_plus(stderr, "Trying to decrypt OpenPGP data\n");
346
fprintf(stderr, "Mandos plugin mandos-client: "
347
"Trying to decrypt OpenPGP data\n");
350
348
}
351
349
352
350
/* Create new GPGME data buffer from memory cryptotext */
353
351
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
354
352
0);
355
353
if(rc != GPG_ERR_NO_ERROR){
356
fprintf_plus(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
357
gpgme_strsource(rc), gpgme_strerror(rc));
354
fprintf(stderr, "Mandos plugin mandos-client: "
355
"bad gpgme_data_new_from_mem: %s: %s\n",
356
gpgme_strsource(rc), gpgme_strerror(rc));
358
357
return -1;
359
358
}
360
359
361
360
/* Create new empty GPGME data buffer for the plaintext */
362
361
rc = gpgme_data_new(&dh_plain);
363
362
if(rc != GPG_ERR_NO_ERROR){
364
fprintf_plus(stderr, "Mandos plugin mandos-client: "
365
"bad gpgme_data_new: %s: %s\n",
366
gpgme_strsource(rc), gpgme_strerror(rc));
363
fprintf(stderr, "Mandos plugin mandos-client: "
364
"bad gpgme_data_new: %s: %s\n",
365
gpgme_strsource(rc), gpgme_strerror(rc));
367
366
gpgme_data_release(dh_crypto);
368
367
return -1;
369
368
}
372
371
data buffer */
373
372
rc = gpgme_op_decrypt(mc.ctx, dh_crypto, dh_plain);
374
373
if(rc != GPG_ERR_NO_ERROR){
375
fprintf_plus(stderr, "bad gpgme_op_decrypt: %s: %s\n",
376
gpgme_strsource(rc), gpgme_strerror(rc));
374
fprintf(stderr, "Mandos plugin mandos-client: "
375
"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_plus(stderr, "gpgme_op_decrypt_result failed\n");
382
fprintf(stderr, "Mandos plugin mandos-client: "
383
"gpgme_op_decrypt_result failed\n");
383
384
} else {
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);
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);
388
391
if(result->file_name != NULL){
389
fprintf_plus(stderr, "File name: %s\n", result->file_name);
392
fprintf(stderr, "Mandos plugin mandos-client: "
393
"File name: %s\n", result->file_name);
390
394
}
391
395
gpgme_recipient_t recipient;
392
396
recipient = result->recipients;
393
397
while(recipient != NULL){
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");
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");
401
407
recipient = recipient->next;
402
408
}
403
409
}
406
412
}
407
413
408
414
if(debug){
409
fprintf_plus(stderr, "Decryption of OpenPGP data succeeded\n");
415
fprintf(stderr, "Mandos plugin mandos-client: "
416
"Decryption of OpenPGP data succeeded\n");
410
417
}
411
418
412
419
/* Seek back to the beginning of the GPGME plaintext data buffer */
419
426
*plaintext = NULL;
420
427
while(true){
421
428
plaintext_capacity = incbuffer(plaintext,
422
(size_t)plaintext_length,
423
plaintext_capacity);
429
(size_t)plaintext_length,
430
plaintext_capacity);
424
431
if(plaintext_capacity == 0){
425
perror_plus("incbuffer");
426
plaintext_length = -1;
427
goto decrypt_end;
432
perror_plus("incbuffer");
433
plaintext_length = -1;
434
goto decrypt_end;
428
435
}
429
436
430
437
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
443
450
}
444
451
445
452
if(debug){
446
fprintf_plus(stderr, "Decrypted password is: ");
453
fprintf(stderr, "Mandos plugin mandos-client: "
454
"Decrypted password is: ");
447
455
for(ssize_t i = 0; i < plaintext_length; i++){
448
456
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
449
457
}
471
479
/* GnuTLS log function callback */
472
480
static void debuggnutls(__attribute__((unused)) int level,
473
481
const char* string){
474
fprintf_plus(stderr, "GnuTLS: %s", string);
482
fprintf(stderr, "Mandos plugin mandos-client: GnuTLS: %s", string);
475
483
}
476
484
477
485
static int init_gnutls_global(const char *pubkeyfilename,
479
487
int ret;
480
488
481
489
if(debug){
482
fprintf_plus(stderr, "Initializing GnuTLS\n");
490
fprintf(stderr, "Mandos plugin mandos-client: "
491
"Initializing GnuTLS\n");
483
492
}
484
493
485
494
ret = gnutls_global_init();
486
495
if(ret != GNUTLS_E_SUCCESS){
487
fprintf_plus(stderr, "GnuTLS global_init: %s\n",
488
safer_gnutls_strerror(ret));
496
fprintf(stderr, "Mandos plugin mandos-client: "
497
"GnuTLS global_init: %s\n", safer_gnutls_strerror(ret));
489
498
return -1;
490
499
}
491
500
500
509
/* OpenPGP credentials */
501
510
ret = gnutls_certificate_allocate_credentials(&mc.cred);
502
511
if(ret != GNUTLS_E_SUCCESS){
503
fprintf_plus(stderr, "GnuTLS memory error: %s\n",
504
safer_gnutls_strerror(ret));
512
fprintf(stderr, "Mandos plugin mandos-client: "
513
"GnuTLS memory error: %s\n", safer_gnutls_strerror(ret));
505
514
gnutls_global_deinit();
506
515
return -1;
507
516
}
508
517
509
518
if(debug){
510
fprintf_plus(stderr, "Attempting to use OpenPGP public key %s and"
511
" secret key %s as GnuTLS credentials\n",
512
pubkeyfilename,
513
seckeyfilename);
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);
514
523
}
515
524
516
525
ret = gnutls_certificate_set_openpgp_key_file
517
526
(mc.cred, pubkeyfilename, seckeyfilename,
518
527
GNUTLS_OPENPGP_FMT_BASE64);
519
528
if(ret != GNUTLS_E_SUCCESS){
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));
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));
525
535
goto globalfail;
526
536
}
527
537
528
538
/* GnuTLS server initialization */
529
539
ret = gnutls_dh_params_init(&mc.dh_params);
530
540
if(ret != GNUTLS_E_SUCCESS){
531
fprintf_plus(stderr, "Error in GnuTLS DH parameter"
532
" initialization: %s\n",
533
safer_gnutls_strerror(ret));
541
fprintf(stderr, "Mandos plugin mandos-client: "
542
"Error in GnuTLS DH parameter initialization:"
543
" %s\n", safer_gnutls_strerror(ret));
534
544
goto globalfail;
535
545
}
536
546
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
537
547
if(ret != GNUTLS_E_SUCCESS){
538
fprintf_plus(stderr, "Error in GnuTLS prime generation: %s\n",
539
safer_gnutls_strerror(ret));
548
fprintf(stderr, "Mandos plugin mandos-client: "
549
"Error in GnuTLS prime generation: %s\n",
550
safer_gnutls_strerror(ret));
540
551
goto globalfail;
541
552
}
542
553
562
573
}
563
574
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
564
575
if(ret != GNUTLS_E_SUCCESS){
565
fprintf_plus(stderr,
566
"Error in GnuTLS session initialization: %s\n",
567
safer_gnutls_strerror(ret));
576
fprintf(stderr, "Mandos plugin mandos-client: "
577
"Error in GnuTLS session initialization: %s\n",
578
safer_gnutls_strerror(ret));
568
579
}
569
580
570
581
{
577
588
}
578
589
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
579
590
if(ret != GNUTLS_E_SUCCESS){
580
fprintf_plus(stderr, "Syntax error at: %s\n", err);
581
fprintf_plus(stderr, "GnuTLS error: %s\n",
582
safer_gnutls_strerror(ret));
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));
583
595
gnutls_deinit(*session);
584
596
return -1;
585
597
}
594
606
}
595
607
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
596
608
if(ret != GNUTLS_E_SUCCESS){
597
fprintf_plus(stderr, "Error setting GnuTLS credentials: %s\n",
598
safer_gnutls_strerror(ret));
609
fprintf(stderr, "Mandos plugin mandos-client: "
610
"Error setting GnuTLS credentials: %s\n",
611
safer_gnutls_strerror(ret));
599
612
gnutls_deinit(*session);
600
613
return -1;
601
614
}
646
659
pf = PF_INET;
647
660
break;
648
661
default:
649
fprintf_plus(stderr, "Bad address family: %d\n", af);
662
fprintf(stderr, "Mandos plugin mandos-client: "
663
"Bad address family: %d\n", af);
650
664
errno = EINVAL;
651
665
return -1;
652
666
}
657
671
}
658
672
659
673
if(debug){
660
fprintf_plus(stderr, "Setting up a TCP connection to %s, port %"
661
PRIu16 "\n", ip, port);
674
fprintf(stderr, "Mandos plugin mandos-client: "
675
"Setting up a TCP connection to %s, port %" PRIu16
676
"\n", ip, port);
662
677
}
663
678
664
679
tcp_sd = socket(pf, SOCK_STREAM, 0);
690
705
}
691
706
if(ret == 0){
692
707
int e = errno;
693
fprintf_plus(stderr, "Bad address: %s\n", ip);
708
fprintf(stderr, "Mandos plugin mandos-client: "
709
"Bad address: %s\n", ip);
694
710
errno = e;
695
711
goto mandos_end;
696
712
}
701
717
702
718
if(IN6_IS_ADDR_LINKLOCAL /* Spurious warnings from */
703
719
(&to.in6.sin6_addr)){ /* -Wstrict-aliasing=2 or lower and
704
-Wunreachable-code*/
720
-Wunreachable-code*/
705
721
if(if_index == AVAHI_IF_UNSPEC){
706
fprintf_plus(stderr, "An IPv6 link-local address is"
707
" incomplete without a network interface\n");
722
fprintf(stderr, "Mandos plugin mandos-client: "
723
"An IPv6 link-local address is incomplete"
724
" without a network interface\n");
708
725
errno = EINVAL;
709
726
goto mandos_end;
710
727
}
728
745
if(if_indextoname((unsigned int)if_index, interface) == NULL){
729
746
perror_plus("if_indextoname");
730
747
} else {
731
fprintf_plus(stderr, "Connection to: %s%%%s, port %" PRIu16
732
"\n", ip, interface, port);
748
fprintf(stderr, "Mandos plugin mandos-client: "
749
"Connection to: %s%%%s, port %" PRIu16 "\n",
750
ip, interface, port);
733
751
}
734
752
} else {
735
fprintf_plus(stderr, "Connection to: %s, port %" PRIu16 "\n",
736
ip, port);
753
fprintf(stderr, "Mandos plugin mandos-client: "
754
"Connection to: %s, port %" PRIu16 "\n", ip, port);
737
755
}
738
756
char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
739
757
INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
749
767
perror_plus("inet_ntop");
750
768
} else {
751
769
if(strcmp(addrstr, ip) != 0){
752
fprintf_plus(stderr, "Canonical address form: %s\n", addrstr);
770
fprintf(stderr, "Mandos plugin mandos-client: "
771
"Canonical address form: %s\n", addrstr);
753
772
}
754
773
}
755
774
}
783
802
while(true){
784
803
size_t out_size = strlen(out);
785
804
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
786
out_size - written));
805
out_size - written));
787
806
if(ret == -1){
788
807
int e = errno;
789
808
perror_plus("write");
809
828
}
810
829
811
830
if(debug){
812
fprintf_plus(stderr, "Establishing TLS session with %s\n", ip);
831
fprintf(stderr, "Mandos plugin mandos-client: "
832
"Establishing TLS session with %s\n", ip);
813
833
}
814
834
815
835
if(quit_now){
835
855
836
856
if(ret != GNUTLS_E_SUCCESS){
837
857
if(debug){
838
fprintf_plus(stderr, "*** GnuTLS Handshake failed ***\n");
858
fprintf(stderr, "Mandos plugin mandos-client: "
859
"*** GnuTLS Handshake failed ***\n");
839
860
gnutls_perror(ret);
840
861
}
841
862
errno = EPROTO;
845
866
/* Read OpenPGP packet that contains the wanted password */
846
867
847
868
if(debug){
848
fprintf_plus(stderr, "Retrieving OpenPGP encrypted password from"
849
" %s\n", ip);
869
fprintf(stderr, "Mandos plugin mandos-client: "
870
"Retrieving OpenPGP encrypted password from %s\n", ip);
850
871
}
851
872
852
873
while(true){
857
878
}
858
879
859
880
buffer_capacity = incbuffer(&buffer, buffer_length,
860
buffer_capacity);
881
buffer_capacity);
861
882
if(buffer_capacity == 0){
862
883
int e = errno;
863
884
perror_plus("incbuffer");
890
911
}
891
912
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
892
913
if(ret < 0){
893
fprintf_plus(stderr, "*** GnuTLS Re-handshake failed "
894
"***\n");
914
fprintf(stderr, "Mandos plugin mandos-client: "
915
"*** GnuTLS Re-handshake failed ***\n");
895
916
gnutls_perror(ret);
896
917
errno = EPROTO;
897
918
goto mandos_end;
898
919
}
899
920
break;
900
921
default:
901
fprintf_plus(stderr, "Unknown error while reading data from"
902
" encrypted session with Mandos server\n");
922
fprintf(stderr, "Mandos plugin mandos-client: "
923
"Unknown error while reading data from"
924
" encrypted session with Mandos server\n");
903
925
gnutls_bye(session, GNUTLS_SHUT_RDWR);
904
926
errno = EIO;
905
927
goto mandos_end;
910
932
}
911
933
912
934
if(debug){
913
fprintf_plus(stderr, "Closing TLS session\n");
935
fprintf(stderr, "Mandos plugin mandos-client: "
936
"Closing TLS session\n");
914
937
}
915
938
916
939
if(quit_now){
928
951
929
952
if(buffer_length > 0){
930
953
ssize_t decrypted_buffer_size;
931
decrypted_buffer_size = pgp_packet_decrypt(buffer, buffer_length,
954
decrypted_buffer_size = pgp_packet_decrypt(buffer,
955
buffer_length,
932
956
&decrypted_buffer);
933
957
if(decrypted_buffer_size >= 0){
934
958
945
969
if(ret == 0 and ferror(stdout)){
946
970
int e = errno;
947
971
if(debug){
948
fprintf_plus(stderr, "Error writing encrypted data: %s\n",
949
strerror(errno));
972
fprintf(stderr, "Mandos plugin mandos-client: "
973
"Error writing encrypted data: %s\n",
974
strerror(errno));
950
975
}
951
976
errno = e;
952
977
goto mandos_end;
1009
1034
switch(event){
1010
1035
default:
1011
1036
case AVAHI_RESOLVER_FAILURE:
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)));
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)));
1016
1041
break;
1017
1042
1018
1043
case AVAHI_RESOLVER_FOUND:
1020
1045
char ip[AVAHI_ADDRESS_STR_MAX];
1021
1046
avahi_address_snprint(ip, sizeof(ip), address);
1022
1047
if(debug){
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);
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);
1026
1052
}
1027
1053
int ret = start_mandos_communication(ip, port, interface,
1028
1054
avahi_proto_to_af(proto));
1060
1086
default:
1061
1087
case AVAHI_BROWSER_FAILURE:
1062
1088
1063
fprintf_plus(stderr, "(Avahi browser) %s\n",
1064
avahi_strerror(avahi_server_errno(mc.server)));
1089
fprintf(stderr, "Mandos plugin mandos-client: "
1090
"(Avahi browser) %s\n",
1091
avahi_strerror(avahi_server_errno(mc.server)));
1065
1092
avahi_simple_poll_quit(mc.simple_poll);
1066
1093
return;
1067
1094
1074
1101
if(avahi_s_service_resolver_new(mc.server, interface, protocol,
1075
1102
name, type, domain, protocol, 0,
1076
1103
resolve_callback, NULL) == NULL)
1077
fprintf_plus(stderr, "Avahi: Failed to resolve service '%s':"
1078
" %s\n", name,
1079
avahi_strerror(avahi_server_errno(mc.server)));
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)));
1080
1107
break;
1081
1108
1082
1109
case AVAHI_BROWSER_REMOVE:
1085
1112
case AVAHI_BROWSER_ALL_FOR_NOW:
1086
1113
case AVAHI_BROWSER_CACHE_EXHAUSTED:
1087
1114
if(debug){
1088
fprintf_plus(stderr, "No Mandos server found, still"
1089
" searching...\n");
1115
fprintf(stderr, "Mandos plugin mandos-client: "
1116
"No Mandos server found, still searching...\n");
1090
1117
}
1091
1118
break;
1092
1119
}
1131
1158
/* Reject the loopback device */
1132
1159
if(ifr->ifr_flags & IFF_LOOPBACK){
1133
1160
if(debug){
1134
fprintf_plus(stderr, "Rejecting loopback interface \"%s\"\n",
1135
ifname);
1161
fprintf(stderr, "Mandos plugin mandos-client: "
1162
"Rejecting loopback interface \"%s\"\n", ifname);
1136
1163
}
1137
1164
return false;
1138
1165
}
1139
1166
/* Accept point-to-point devices only if connect_to is specified */
1140
1167
if(connect_to != NULL and (ifr->ifr_flags & IFF_POINTOPOINT)){
1141
1168
if(debug){
1142
fprintf_plus(stderr, "Accepting point-to-point interface"
1143
" \"%s\"\n", ifname);
1169
fprintf(stderr, "Mandos plugin mandos-client: "
1170
"Accepting point-to-point interface \"%s\"\n", ifname);
1144
1171
}
1145
1172
return true;
1146
1173
}
1147
1174
/* Otherwise, reject non-broadcast-capable devices */
1148
1175
if(not (ifr->ifr_flags & IFF_BROADCAST)){
1149
1176
if(debug){
1150
fprintf_plus(stderr, "Rejecting non-broadcast interface"
1151
" \"%s\"\n", ifname);
1177
fprintf(stderr, "Mandos plugin mandos-client: "
1178
"Rejecting non-broadcast interface \"%s\"\n", ifname);
1152
1179
}
1153
1180
return false;
1154
1181
}
1155
1182
/* Reject non-ARP interfaces (including dummy interfaces) */
1156
1183
if(ifr->ifr_flags & IFF_NOARP){
1157
1184
if(debug){
1158
fprintf_plus(stderr, "Rejecting non-ARP interface \"%s\"\n",
1159
ifname);
1185
fprintf(stderr, "Mandos plugin mandos-client: "
1186
"Rejecting non-ARP interface \"%s\"\n", ifname);
1160
1187
}
1161
1188
return false;
1162
1189
}
1163
1190
1164
1191
/* Accept this device */
1165
1192
if(debug){
1166
fprintf_plus(stderr, "Interface \"%s\" is good\n", ifname);
1193
fprintf(stderr, "Mandos plugin mandos-client: "
1194
"Interface \"%s\" is good\n", ifname);
1167
1195
}
1168
1196
return true;
1169
1197
}
1181
1209
struct ifreq ifr;
1182
1210
if(not get_flags(if_entry->d_name, &ifr)){
1183
1211
if(debug){
1184
fprintf_plus(stderr, "Failed to get flags for interface "
1185
"\"%s\"\n", if_entry->d_name);
1212
fprintf(stderr, "Mandos plugin mandos-client: "
1213
"Failed to get flags for interface \"%s\"\n",
1214
if_entry->d_name);
1186
1215
}
1187
1216
return 0;
1188
1217
}
1206
1235
struct ifreq ifr;
1207
1236
if(not get_flags(if_entry->d_name, &ifr)){
1208
1237
if(debug){
1209
fprintf_plus(stderr, "Failed to get flags for interface "
1210
"\"%s\"\n", if_entry->d_name);
1238
fprintf(stderr, "Mandos plugin mandos-client: "
1239
"Failed to get flags for interface \"%s\"\n",
1240
if_entry->d_name);
1211
1241
}
1212
1242
return 0;
1213
1243
}
1215
1245
/* Reject down interfaces */
1216
1246
if(not (ifr.ifr_flags & IFF_UP)){
1217
1247
if(debug){
1218
fprintf_plus(stderr, "Rejecting down interface \"%s\"\n",
1219
if_entry->d_name);
1248
fprintf(stderr, "Mandos plugin mandos-client: "
1249
"Rejecting down interface \"%s\"\n",
1250
if_entry->d_name);
1220
1251
}
1221
1252
return 0;
1222
1253
}
1224
1255
/* Reject non-running interfaces */
1225
1256
if(not (ifr.ifr_flags & IFF_RUNNING)){
1226
1257
if(debug){
1227
fprintf_plus(stderr, "Rejecting non-running interface \"%s\"\n",
1228
if_entry->d_name);
1258
fprintf(stderr, "Mandos plugin mandos-client: "
1259
"Rejecting non-running interface \"%s\"\n",
1260
if_entry->d_name);
1229
1261
}
1230
1262
return 0;
1231
1263
}
1250
1282
/* Is this directory entry a runnable program? */
1251
1283
int runnable_hook(const struct dirent *direntry){
1252
1284
int ret;
1253
size_t sret;
1254
1285
struct stat st;
1255
1286
1256
1287
if((direntry->d_name)[0] == '\0'){
1258
1289
return 0;
1259
1290
}
1260
1291
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
}
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 */
1273
1307
1274
1308
char *fullname = NULL;
1275
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1309
ret = asprintf(&fullname, "%s/%s", hookdir,
1310
direntry->d_name);
1276
1311
if(ret < 0){
1277
1312
perror_plus("asprintf");
1278
1313
return 0;
1281
1316
ret = stat(fullname, &st);
1282
1317
if(ret == -1){
1283
1318
if(debug){
1284
perror_plus("Could not stat hook");
1319
perror_plus("Could not stat plugin");
1285
1320
}
1286
1321
return 0;
1287
1322
}
1288
1323
if(not (S_ISREG(st.st_mode))){
1289
1324
/* Not a regular file */
1290
if(debug){
1291
fprintf_plus(stderr, "Ignoring hook \"%s\" - not a file\n",
1292
direntry->d_name);
1293
}
1294
1325
return 0;
1295
1326
}
1296
1327
if(not (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))){
1297
1328
/* Not executable */
1298
if(debug){
1299
fprintf_plus(stderr, "Ignoring hook \"%s\" - not executable\n",
1300
direntry->d_name);
1301
}
1302
1329
return 0;
1303
1330
}
1304
1331
return 1;
1313
1340
while(true){
1314
1341
if(mc.current_server == NULL){
1315
1342
if (debug){
1316
fprintf_plus(stderr, "Wait until first server is found."
1317
" No timeout!\n");
1343
fprintf(stderr, "Mandos plugin mandos-client: "
1344
"Wait until first server is found. No timeout!\n");
1318
1345
}
1319
1346
ret = avahi_simple_poll_iterate(s, -1);
1320
1347
} else {
1321
1348
if (debug){
1322
fprintf_plus(stderr, "Check current_server if we should run"
1323
" it, or wait\n");
1349
fprintf(stderr, "Mandos plugin mandos-client: "
1350
"Check current_server if we should run it,"
1351
" or wait\n");
1324
1352
}
1325
1353
/* the current time */
1326
1354
ret = clock_gettime(CLOCK_MONOTONIC, &now);
1342
1370
- ((intmax_t)waited_time.tv_nsec / 1000000));
1343
1371
1344
1372
if (debug){
1345
fprintf_plus(stderr, "Blocking for %" PRIdMAX " ms\n",
1346
block_time);
1373
fprintf(stderr, "Mandos plugin mandos-client: "
1374
"Blocking for %" PRIdMAX " ms\n", block_time);
1347
1375
}
1348
1376
1349
1377
if(block_time <= 0){
1376
1404
}
1377
1405
}
1378
1406
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
1477
1407
int main(int argc, char *argv[]){
1478
1408
AvahiSServiceBrowser *sb = NULL;
1479
1409
int error;
1637
1567
argp_state_help(state, state->out_stream,
1638
1568
ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);
1639
1569
case 'V': /* --version */
1640
fprintf_plus(state->out_stream,
1641
"Mandos plugin mandos-client: ");
1642
fprintf_plus(state->out_stream, "%s\n", argp_program_version);
1570
fprintf(state->out_stream, "Mandos plugin mandos-client: ");
1571
fprintf(state->out_stream, "%s\n", argp_program_version);
1643
1572
exit(argp_err_exit_status);
1644
1573
break;
1645
1574
default:
1690
1619
if(ret == -1){
1691
1620
perror_plus("fstat");
1692
1621
} else {
1693
if(S_ISREG(st.st_mode)
1694
and st.st_uid == 0 and st.st_gid == 0){
1622
if(S_ISREG(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
1695
1623
ret = fchown(seckey_fd, uid, gid);
1696
1624
if(ret == -1){
1697
1625
perror_plus("fchown");
1711
1639
if(ret == -1){
1712
1640
perror_plus("fstat");
1713
1641
} else {
1714
if(S_ISREG(st.st_mode)
1715
and st.st_uid == 0 and st.st_gid == 0){
1642
if(S_ISREG(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
1716
1643
ret = fchown(pubkey_fd, uid, gid);
1717
1644
if(ret == -1){
1718
1645
perror_plus("fchown");
1731
1658
}
1732
1659
}
1733
1660
1734
/* Run network hooks */
1661
/* Find network hooks and run them */
1735
1662
{
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");
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);
1750
1752
}
1751
1753
}
1752
1754
1769
1771
/* Pick the first interface returned */
1770
1772
interface = strdup(direntries[0]->d_name);
1771
1773
if(debug){
1772
fprintf_plus(stderr, "Using interface \"%s\"\n", interface);
1774
fprintf(stderr, "Mandos plugin mandos-client: "
1775
"Using interface \"%s\"\n", interface);
1773
1776
}
1774
1777
if(interface == NULL){
1775
1778
perror_plus("malloc");
1780
1783
free(direntries);
1781
1784
} else {
1782
1785
free(direntries);
1783
fprintf_plus(stderr, "Could not find a network interface\n");
1786
fprintf(stderr, "Mandos plugin mandos-client: "
1787
"Could not find a network interface\n");
1784
1788
exitcode = EXIT_FAILURE;
1785
1789
goto end;
1786
1790
}
1792
1796
srand((unsigned int) time(NULL));
1793
1797
mc.simple_poll = avahi_simple_poll_new();
1794
1798
if(mc.simple_poll == NULL){
1795
fprintf_plus(stderr,
1796
"Avahi: Failed to create simple poll object.\n");
1799
fprintf(stderr, "Mandos plugin mandos-client: "
1800
"Avahi: Failed to create simple poll object.\n");
1797
1801
exitcode = EX_UNAVAILABLE;
1798
1802
goto end;
1799
1803
}
1865
1869
if(strcmp(interface, "none") != 0){
1866
1870
if_index = (AvahiIfIndex) if_nametoindex(interface);
1867
1871
if(if_index == 0){
1868
fprintf_plus(stderr, "No such interface: \"%s\"\n", interface);
1872
fprintf(stderr, "Mandos plugin mandos-client: "
1873
"No such interface: \"%s\"\n", interface);
1869
1874
exitcode = EX_UNAVAILABLE;
1870
1875
goto end;
1871
1876
}
1991
1996
#endif /* __linux__ */
1992
1997
/* Lower privileges */
1993
1998
errno = 0;
1994
/* Lower privileges */
1995
ret = seteuid(uid);
1996
if(ret == -1){
1997
perror_plus("seteuid");
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
}
1998
2011
}
1999
2012
}
2000
2013
2004
2017
2005
2018
ret = init_gnutls_global(pubkey, seckey);
2006
2019
if(ret == -1){
2007
fprintf_plus(stderr, "init_gnutls_global failed\n");
2020
fprintf(stderr, "Mandos plugin mandos-client: "
2021
"init_gnutls_global failed\n");
2008
2022
exitcode = EX_UNAVAILABLE;
2009
2023
goto end;
2010
2024
} else {
2026
2040
}
2027
2041
2028
2042
if(not init_gpgme(pubkey, seckey, tempdir)){
2029
fprintf_plus(stderr, "init_gpgme failed\n");
2043
fprintf(stderr, "Mandos plugin mandos-client: "
2044
"init_gpgme failed\n");
2030
2045
exitcode = EX_UNAVAILABLE;
2031
2046
goto end;
2032
2047
} else {
2042
2057
/* (Mainly meant for debugging) */
2043
2058
char *address = strrchr(connect_to, ':');
2044
2059
if(address == NULL){
2045
fprintf_plus(stderr, "No colon in address\n");
2060
fprintf(stderr, "Mandos plugin mandos-client: "
2061
"No colon in address\n");
2046
2062
exitcode = EX_USAGE;
2047
2063
goto end;
2048
2064
}
2056
2072
tmpmax = strtoimax(address+1, &tmp, 10);
2057
2073
if(errno != 0 or tmp == address+1 or *tmp != '\0'
2058
2074
or tmpmax != (uint16_t)tmpmax){
2059
fprintf_plus(stderr, "Bad port number\n");
2075
fprintf(stderr, "Mandos plugin mandos-client: "
2076
"Bad port number\n");
2060
2077
exitcode = EX_USAGE;
2061
2078
goto end;
2062
2079
}
2092
2109
break;
2093
2110
}
2094
2111
if(debug){
2095
fprintf_plus(stderr, "Retrying in %d seconds\n",
2096
(int)retry_interval);
2112
fprintf(stderr, "Mandos plugin mandos-client: "
2113
"Retrying in %d seconds\n", (int)retry_interval);
2097
2114
}
2098
2115
sleep((int)retry_interval);
2099
2116
}
2129
2146
2130
2147
/* Check if creating the Avahi server object succeeded */
2131
2148
if(mc.server == NULL){
2132
fprintf_plus(stderr, "Failed to create Avahi server: %s\n",
2133
avahi_strerror(error));
2149
fprintf(stderr, "Mandos plugin mandos-client: "
2150
"Failed to create Avahi server: %s\n",
2151
avahi_strerror(error));
2134
2152
exitcode = EX_UNAVAILABLE;
2135
2153
goto end;
2136
2154
}
2144
2162
AVAHI_PROTO_UNSPEC, "_mandos._tcp",
2145
2163
NULL, 0, browse_callback, NULL);
2146
2164
if(sb == NULL){
2147
fprintf_plus(stderr, "Failed to create service browser: %s\n",
2148
avahi_strerror(avahi_server_errno(mc.server)));
2165
fprintf(stderr, "Mandos plugin mandos-client: "
2166
"Failed to create service browser: %s\n",
2167
avahi_strerror(avahi_server_errno(mc.server)));
2149
2168
exitcode = EX_UNAVAILABLE;
2150
2169
goto end;
2151
2170
}
2157
2176
/* Run the main loop */
2158
2177
2159
2178
if(debug){
2160
fprintf_plus(stderr, "Starting Avahi loop search\n");
2179
fprintf(stderr, "Mandos plugin mandos-client: "
2180
"Starting Avahi loop search\n");
2161
2181
}
2162
2182
2163
2183
ret = avahi_loop_with_timeout(mc.simple_poll,
2164
2184
(int)(retry_interval * 1000));
2165
2185
if(debug){
2166
fprintf_plus(stderr, "avahi_loop_with_timeout exited %s\n",
2167
(ret == 0) ? "successfully" : "with error");
2186
fprintf(stderr, "Mandos plugin mandos-client: "
2187
"avahi_loop_with_timeout exited %s\n",
2188
(ret == 0) ? "successfully" : "with error");
2168
2189
}
2169
2190
2170
2191
end:
2171
2192
2172
2193
if(debug){
2173
fprintf_plus(stderr, "%s exiting\n", argv[0]);
2194
fprintf(stderr, "Mandos plugin mandos-client: "
2195
"%s exiting\n", argv[0]);
2174
2196
}
2175
2197
2176
2198
/* Cleanup things */
2204
2226
}
2205
2227
}
2206
2228
2207
/* Re-raise priviliges */
2208
{
2229
/* XXX run network hooks "stop" here */
2230
2231
/* Take down the network interface */
2232
if(take_down_interface){
2233
/* Re-raise priviliges */
2209
2234
errno = 0;
2210
2235
ret = seteuid(0);
2211
2236
if(ret == -1){
2212
2237
perror_plus("seteuid");
2213
2238
}
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){
2239
if(geteuid() == 0){
2221
2240
ret = ioctl(sd, SIOCGIFFLAGS, &network);
2222
2241
if(ret == -1){
2223
2242
perror_plus("ioctl SIOCGIFFLAGS");
2232
2251
if(ret == -1){
2233
2252
perror_plus("close");
2234
2253
}
2254
/* Lower privileges permanently */
2255
errno = 0;
2256
ret = setuid(uid);
2257
if(ret == -1){
2258
perror_plus("setuid");
2259
}
2235
2260
}
2236
2261
}
2237
/* Lower privileges permanently */
2238
errno = 0;
2239
ret = setuid(uid);
2240
if(ret == -1){
2241
perror_plus("setuid");
2242
}
2243
2262
2244
2263
/* Removes the GPGME temp directory and all files inside */
2245
2264
if(tempdir_created){
2259
2278
}
2260
2279
ret = remove(fullname);
2261
2280
if(ret == -1){
2262
fprintf_plus(stderr, "remove(\"%s\"): %s\n", fullname,
2263
strerror(errno));
2281
fprintf(stderr, "Mandos plugin mandos-client: "
2282
"remove(\"%s\"): %s\n", fullname, strerror(errno));
2264
2283
}
2265
2284
free(fullname);
2266
2285
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0