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- Committer: teddy at bsnet
- Date: 2011-12-02 16:52:50 UTC
- mto: (505.2.13 mandos-client-network-hooks)
- mto: This revision was merged to the branch mainline in revision 525.
- Revision ID: teddy@fukt.bsnet.se-20111202165250-gs83pj705gsofb0e
* network-hooks.d/openvpn: Tolerate relative MANDOSNETHOOKDIR path.
(stop): Bug fix: Fix quote escapes.
* network-hooks.d/openvpn.conf: Remove compression.
(stop): Bug fix: Fix quote escapes.
* network-hooks.d/openvpn.conf: Remove compression.
- files added:
- network-hooks.d
- files modified:
- Makefile
added
removed
plugins.d/mandos-client.c
73
73
*/
74
74
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
75
75
getuid(), getgid(), seteuid(),
76
setgid(), pause() */
76
setgid(), pause(), _exit() */
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
87
87
EX_NOHOST, EX_IOERR, EX_PROTOCOL */
88
88
#include <sys/wait.h> /* waitpid(), WIFEXITED(),
89
89
WEXITSTATUS(), WTERMSIG() */
90
#include <grp.h> /* setgroups() */
90
91
91
92
#ifdef __linux__
92
93
#include <sys/klog.h> /* klogctl() */
178
179
va_list ap;
179
180
va_start (ap, format);
180
181
181
TEMP_FAILURE_RETRY(fprintf(stream, "Mandos plugin %s: ", program_invocation_short_name));
182
TEMP_FAILURE_RETRY(fprintf(stream, "Mandos plugin %s: ",
183
program_invocation_short_name));
182
184
return TEMP_FAILURE_RETRY(vfprintf(stream, format, ap));
183
185
}
184
186
261
263
262
264
rc = gpgme_data_new_from_fd(&pgp_data, fd);
263
265
if(rc != GPG_ERR_NO_ERROR){
264
fprintf(stderr, "Mandos plugin mandos-client: "
265
"bad gpgme_data_new_from_fd: %s: %s\n",
266
gpgme_strsource(rc), gpgme_strerror(rc));
266
fprintf_plus(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
267
gpgme_strsource(rc), gpgme_strerror(rc));
267
268
return false;
268
269
}
269
270
270
271
rc = gpgme_op_import(mc.ctx, pgp_data);
271
272
if(rc != GPG_ERR_NO_ERROR){
272
fprintf(stderr, "Mandos plugin mandos-client: "
273
"bad gpgme_op_import: %s: %s\n",
274
gpgme_strsource(rc), gpgme_strerror(rc));
273
fprintf_plus(stderr, "bad gpgme_op_import: %s: %s\n",
274
gpgme_strsource(rc), gpgme_strerror(rc));
275
275
return false;
276
276
}
277
277
284
284
}
285
285
286
286
if(debug){
287
fprintf(stderr, "Mandos plugin mandos-client: "
288
"Initializing GPGME\n");
287
fprintf_plus(stderr, "Initializing GPGME\n");
289
288
}
290
289
291
290
/* Init GPGME */
292
291
gpgme_check_version(NULL);
293
292
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
294
293
if(rc != GPG_ERR_NO_ERROR){
295
fprintf(stderr, "Mandos plugin mandos-client: "
296
"bad gpgme_engine_check_version: %s: %s\n",
297
gpgme_strsource(rc), gpgme_strerror(rc));
294
fprintf_plus(stderr, "bad gpgme_engine_check_version: %s: %s\n",
295
gpgme_strsource(rc), gpgme_strerror(rc));
298
296
return false;
299
297
}
300
298
301
299
/* Set GPGME home directory for the OpenPGP engine only */
302
300
rc = gpgme_get_engine_info(&engine_info);
303
301
if(rc != GPG_ERR_NO_ERROR){
304
fprintf(stderr, "Mandos plugin mandos-client: "
305
"bad gpgme_get_engine_info: %s: %s\n",
306
gpgme_strsource(rc), gpgme_strerror(rc));
302
fprintf_plus(stderr, "bad gpgme_get_engine_info: %s: %s\n",
303
gpgme_strsource(rc), gpgme_strerror(rc));
307
304
return false;
308
305
}
309
306
while(engine_info != NULL){
315
312
engine_info = engine_info->next;
316
313
}
317
314
if(engine_info == NULL){
318
fprintf(stderr, "Mandos plugin mandos-client: "
319
"Could not set GPGME home dir to %s\n", tempdir);
315
fprintf_plus(stderr, "Could not set GPGME home dir to %s\n",
316
tempdir);
320
317
return false;
321
318
}
322
319
323
320
/* Create new GPGME "context" */
324
321
rc = gpgme_new(&(mc.ctx));
325
322
if(rc != GPG_ERR_NO_ERROR){
326
fprintf(stderr, "Mandos plugin mandos-client: "
327
"bad gpgme_new: %s: %s\n", gpgme_strsource(rc),
328
gpgme_strerror(rc));
323
fprintf_plus(stderr, "Mandos plugin mandos-client: "
324
"bad gpgme_new: %s: %s\n", gpgme_strsource(rc),
325
gpgme_strerror(rc));
329
326
return false;
330
327
}
331
328
350
347
ssize_t plaintext_length = 0;
351
348
352
349
if(debug){
353
fprintf(stderr, "Mandos plugin mandos-client: "
354
"Trying to decrypt OpenPGP data\n");
350
fprintf_plus(stderr, "Trying to decrypt OpenPGP data\n");
355
351
}
356
352
357
353
/* Create new GPGME data buffer from memory cryptotext */
358
354
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
359
355
0);
360
356
if(rc != GPG_ERR_NO_ERROR){
361
fprintf(stderr, "Mandos plugin mandos-client: "
362
"bad gpgme_data_new_from_mem: %s: %s\n",
363
gpgme_strsource(rc), gpgme_strerror(rc));
357
fprintf_plus(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
358
gpgme_strsource(rc), gpgme_strerror(rc));
364
359
return -1;
365
360
}
366
361
367
362
/* Create new empty GPGME data buffer for the plaintext */
368
363
rc = gpgme_data_new(&dh_plain);
369
364
if(rc != GPG_ERR_NO_ERROR){
370
fprintf(stderr, "Mandos plugin mandos-client: "
371
"bad gpgme_data_new: %s: %s\n",
372
gpgme_strsource(rc), gpgme_strerror(rc));
365
fprintf_plus(stderr, "Mandos plugin mandos-client: "
366
"bad gpgme_data_new: %s: %s\n",
367
gpgme_strsource(rc), gpgme_strerror(rc));
373
368
gpgme_data_release(dh_crypto);
374
369
return -1;
375
370
}
378
373
data buffer */
379
374
rc = gpgme_op_decrypt(mc.ctx, dh_crypto, dh_plain);
380
375
if(rc != GPG_ERR_NO_ERROR){
381
fprintf(stderr, "Mandos plugin mandos-client: "
382
"bad gpgme_op_decrypt: %s: %s\n",
383
gpgme_strsource(rc), gpgme_strerror(rc));
376
fprintf_plus(stderr, "bad gpgme_op_decrypt: %s: %s\n",
377
gpgme_strsource(rc), gpgme_strerror(rc));
384
378
plaintext_length = -1;
385
379
if(debug){
386
380
gpgme_decrypt_result_t result;
387
381
result = gpgme_op_decrypt_result(mc.ctx);
388
382
if(result == NULL){
389
fprintf(stderr, "Mandos plugin mandos-client: "
390
"gpgme_op_decrypt_result failed\n");
383
fprintf_plus(stderr, "gpgme_op_decrypt_result failed\n");
391
384
} else {
392
fprintf(stderr, "Mandos plugin mandos-client: "
393
"Unsupported algorithm: %s\n",
394
result->unsupported_algorithm);
395
fprintf(stderr, "Mandos plugin mandos-client: "
396
"Wrong key usage: %u\n",
397
result->wrong_key_usage);
385
fprintf_plus(stderr, "Unsupported algorithm: %s\n",
386
result->unsupported_algorithm);
387
fprintf_plus(stderr, "Wrong key usage: %u\n",
388
result->wrong_key_usage);
398
389
if(result->file_name != NULL){
399
fprintf(stderr, "Mandos plugin mandos-client: "
400
"File name: %s\n", result->file_name);
390
fprintf_plus(stderr, "File name: %s\n", result->file_name);
401
391
}
402
392
gpgme_recipient_t recipient;
403
393
recipient = result->recipients;
404
394
while(recipient != NULL){
405
fprintf(stderr, "Mandos plugin mandos-client: "
406
"Public key algorithm: %s\n",
407
gpgme_pubkey_algo_name(recipient->pubkey_algo));
408
fprintf(stderr, "Mandos plugin mandos-client: "
409
"Key ID: %s\n", recipient->keyid);
410
fprintf(stderr, "Mandos plugin mandos-client: "
411
"Secret key available: %s\n",
412
recipient->status == GPG_ERR_NO_SECKEY
413
? "No" : "Yes");
395
fprintf_plus(stderr, "Public key algorithm: %s\n",
396
gpgme_pubkey_algo_name
397
(recipient->pubkey_algo));
398
fprintf_plus(stderr, "Key ID: %s\n", recipient->keyid);
399
fprintf_plus(stderr, "Secret key available: %s\n",
400
recipient->status == GPG_ERR_NO_SECKEY
401
? "No" : "Yes");
414
402
recipient = recipient->next;
415
403
}
416
404
}
419
407
}
420
408
421
409
if(debug){
422
fprintf(stderr, "Mandos plugin mandos-client: "
423
"Decryption of OpenPGP data succeeded\n");
410
fprintf_plus(stderr, "Decryption of OpenPGP data succeeded\n");
424
411
}
425
412
426
413
/* Seek back to the beginning of the GPGME plaintext data buffer */
457
444
}
458
445
459
446
if(debug){
460
fprintf(stderr, "Mandos plugin mandos-client: "
461
"Decrypted password is: ");
447
fprintf_plus(stderr, "Decrypted password is: ");
462
448
for(ssize_t i = 0; i < plaintext_length; i++){
463
449
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
464
450
}
486
472
/* GnuTLS log function callback */
487
473
static void debuggnutls(__attribute__((unused)) int level,
488
474
const char* string){
489
fprintf(stderr, "Mandos plugin mandos-client: GnuTLS: %s", string);
475
fprintf_plus(stderr, "GnuTLS: %s", string);
490
476
}
491
477
492
478
static int init_gnutls_global(const char *pubkeyfilename,
494
480
int ret;
495
481
496
482
if(debug){
497
fprintf(stderr, "Mandos plugin mandos-client: "
498
"Initializing GnuTLS\n");
483
fprintf_plus(stderr, "Initializing GnuTLS\n");
499
484
}
500
485
501
486
ret = gnutls_global_init();
502
487
if(ret != GNUTLS_E_SUCCESS){
503
fprintf(stderr, "Mandos plugin mandos-client: "
504
"GnuTLS global_init: %s\n", safer_gnutls_strerror(ret));
488
fprintf_plus(stderr, "GnuTLS global_init: %s\n",
489
safer_gnutls_strerror(ret));
505
490
return -1;
506
491
}
507
492
516
501
/* OpenPGP credentials */
517
502
ret = gnutls_certificate_allocate_credentials(&mc.cred);
518
503
if(ret != GNUTLS_E_SUCCESS){
519
fprintf(stderr, "Mandos plugin mandos-client: "
520
"GnuTLS memory error: %s\n", safer_gnutls_strerror(ret));
504
fprintf_plus(stderr, "GnuTLS memory error: %s\n",
505
safer_gnutls_strerror(ret));
521
506
gnutls_global_deinit();
522
507
return -1;
523
508
}
524
509
525
510
if(debug){
526
fprintf(stderr, "Mandos plugin mandos-client: "
527
"Attempting to use OpenPGP public key %s and"
528
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
529
seckeyfilename);
511
fprintf_plus(stderr, "Attempting to use OpenPGP public key %s and"
512
" secret key %s as GnuTLS credentials\n",
513
pubkeyfilename,
514
seckeyfilename);
530
515
}
531
516
532
517
ret = gnutls_certificate_set_openpgp_key_file
533
518
(mc.cred, pubkeyfilename, seckeyfilename,
534
519
GNUTLS_OPENPGP_FMT_BASE64);
535
520
if(ret != GNUTLS_E_SUCCESS){
536
fprintf(stderr,
537
"Mandos plugin mandos-client: "
538
"Error[%d] while reading the OpenPGP key pair ('%s',"
539
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
540
fprintf(stderr, "Mandos plugin mandos-client: "
541
"The GnuTLS error is: %s\n", safer_gnutls_strerror(ret));
521
fprintf_plus(stderr,
522
"Error[%d] while reading the OpenPGP key pair ('%s',"
523
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
524
fprintf_plus(stderr, "The GnuTLS error is: %s\n",
525
safer_gnutls_strerror(ret));
542
526
goto globalfail;
543
527
}
544
528
545
529
/* GnuTLS server initialization */
546
530
ret = gnutls_dh_params_init(&mc.dh_params);
547
531
if(ret != GNUTLS_E_SUCCESS){
548
fprintf(stderr, "Mandos plugin mandos-client: "
549
"Error in GnuTLS DH parameter initialization:"
550
" %s\n", safer_gnutls_strerror(ret));
532
fprintf_plus(stderr, "Error in GnuTLS DH parameter"
533
" initialization: %s\n",
534
safer_gnutls_strerror(ret));
551
535
goto globalfail;
552
536
}
553
537
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
554
538
if(ret != GNUTLS_E_SUCCESS){
555
fprintf(stderr, "Mandos plugin mandos-client: "
556
"Error in GnuTLS prime generation: %s\n",
557
safer_gnutls_strerror(ret));
539
fprintf_plus(stderr, "Error in GnuTLS prime generation: %s\n",
540
safer_gnutls_strerror(ret));
558
541
goto globalfail;
559
542
}
560
543
580
563
}
581
564
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
582
565
if(ret != GNUTLS_E_SUCCESS){
583
fprintf(stderr, "Mandos plugin mandos-client: "
584
"Error in GnuTLS session initialization: %s\n",
585
safer_gnutls_strerror(ret));
566
fprintf_plus(stderr,
567
"Error in GnuTLS session initialization: %s\n",
568
safer_gnutls_strerror(ret));
586
569
}
587
570
588
571
{
595
578
}
596
579
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
597
580
if(ret != GNUTLS_E_SUCCESS){
598
fprintf(stderr, "Mandos plugin mandos-client: "
599
"Syntax error at: %s\n", err);
600
fprintf(stderr, "Mandos plugin mandos-client: "
601
"GnuTLS error: %s\n", safer_gnutls_strerror(ret));
581
fprintf_plus(stderr, "Syntax error at: %s\n", err);
582
fprintf_plus(stderr, "GnuTLS error: %s\n",
583
safer_gnutls_strerror(ret));
602
584
gnutls_deinit(*session);
603
585
return -1;
604
586
}
613
595
}
614
596
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
615
597
if(ret != GNUTLS_E_SUCCESS){
616
fprintf(stderr, "Mandos plugin mandos-client: "
617
"Error setting GnuTLS credentials: %s\n",
618
safer_gnutls_strerror(ret));
598
fprintf_plus(stderr, "Error setting GnuTLS credentials: %s\n",
599
safer_gnutls_strerror(ret));
619
600
gnutls_deinit(*session);
620
601
return -1;
621
602
}
666
647
pf = PF_INET;
667
648
break;
668
649
default:
669
fprintf(stderr, "Mandos plugin mandos-client: "
670
"Bad address family: %d\n", af);
650
fprintf_plus(stderr, "Bad address family: %d\n", af);
671
651
errno = EINVAL;
672
652
return -1;
673
653
}
678
658
}
679
659
680
660
if(debug){
681
fprintf(stderr, "Mandos plugin mandos-client: "
682
"Setting up a TCP connection to %s, port %" PRIu16
683
"\n", ip, port);
661
fprintf_plus(stderr, "Setting up a TCP connection to %s, port %"
662
PRIu16 "\n", ip, port);
684
663
}
685
664
686
665
tcp_sd = socket(pf, SOCK_STREAM, 0);
712
691
}
713
692
if(ret == 0){
714
693
int e = errno;
715
fprintf(stderr, "Mandos plugin mandos-client: "
716
"Bad address: %s\n", ip);
694
fprintf_plus(stderr, "Bad address: %s\n", ip);
717
695
errno = e;
718
696
goto mandos_end;
719
697
}
726
704
(&to.in6.sin6_addr)){ /* -Wstrict-aliasing=2 or lower and
727
705
-Wunreachable-code*/
728
706
if(if_index == AVAHI_IF_UNSPEC){
729
fprintf(stderr, "Mandos plugin mandos-client: "
730
"An IPv6 link-local address is incomplete"
731
" without a network interface\n");
707
fprintf_plus(stderr, "An IPv6 link-local address is"
708
" incomplete without a network interface\n");
732
709
errno = EINVAL;
733
710
goto mandos_end;
734
711
}
752
729
if(if_indextoname((unsigned int)if_index, interface) == NULL){
753
730
perror_plus("if_indextoname");
754
731
} else {
755
fprintf(stderr, "Mandos plugin mandos-client: "
756
"Connection to: %s%%%s, port %" PRIu16 "\n",
757
ip, interface, port);
732
fprintf_plus(stderr, "Connection to: %s%%%s, port %" PRIu16
733
"\n", ip, interface, port);
758
734
}
759
735
} else {
760
fprintf(stderr, "Mandos plugin mandos-client: "
761
"Connection to: %s, port %" PRIu16 "\n", ip, port);
736
fprintf_plus(stderr, "Connection to: %s, port %" PRIu16 "\n",
737
ip, port);
762
738
}
763
739
char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
764
740
INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
774
750
perror_plus("inet_ntop");
775
751
} else {
776
752
if(strcmp(addrstr, ip) != 0){
777
fprintf(stderr, "Mandos plugin mandos-client: "
778
"Canonical address form: %s\n", addrstr);
753
fprintf_plus(stderr, "Canonical address form: %s\n", addrstr);
779
754
}
780
755
}
781
756
}
835
810
}
836
811
837
812
if(debug){
838
fprintf(stderr, "Mandos plugin mandos-client: "
839
"Establishing TLS session with %s\n", ip);
813
fprintf_plus(stderr, "Establishing TLS session with %s\n", ip);
840
814
}
841
815
842
816
if(quit_now){
862
836
863
837
if(ret != GNUTLS_E_SUCCESS){
864
838
if(debug){
865
fprintf(stderr, "Mandos plugin mandos-client: "
866
"*** GnuTLS Handshake failed ***\n");
839
fprintf_plus(stderr, "*** GnuTLS Handshake failed ***\n");
867
840
gnutls_perror(ret);
868
841
}
869
842
errno = EPROTO;
873
846
/* Read OpenPGP packet that contains the wanted password */
874
847
875
848
if(debug){
876
fprintf(stderr, "Mandos plugin mandos-client: "
877
"Retrieving OpenPGP encrypted password from %s\n", ip);
849
fprintf_plus(stderr, "Retrieving OpenPGP encrypted password from"
850
" %s\n", ip);
878
851
}
879
852
880
853
while(true){
918
891
}
919
892
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
920
893
if(ret < 0){
921
fprintf(stderr, "Mandos plugin mandos-client: "
922
"*** GnuTLS Re-handshake failed ***\n");
894
fprintf_plus(stderr, "*** GnuTLS Re-handshake failed "
895
"***\n");
923
896
gnutls_perror(ret);
924
897
errno = EPROTO;
925
898
goto mandos_end;
926
899
}
927
900
break;
928
901
default:
929
fprintf(stderr, "Mandos plugin mandos-client: "
930
"Unknown error while reading data from"
931
" encrypted session with Mandos server\n");
902
fprintf_plus(stderr, "Unknown error while reading data from"
903
" encrypted session with Mandos server\n");
932
904
gnutls_bye(session, GNUTLS_SHUT_RDWR);
933
905
errno = EIO;
934
906
goto mandos_end;
939
911
}
940
912
941
913
if(debug){
942
fprintf(stderr, "Mandos plugin mandos-client: "
943
"Closing TLS session\n");
914
fprintf_plus(stderr, "Closing TLS session\n");
944
915
}
945
916
946
917
if(quit_now){
975
946
if(ret == 0 and ferror(stdout)){
976
947
int e = errno;
977
948
if(debug){
978
fprintf(stderr, "Mandos plugin mandos-client: "
979
"Error writing encrypted data: %s\n",
980
strerror(errno));
949
fprintf_plus(stderr, "Error writing encrypted data: %s\n",
950
strerror(errno));
981
951
}
982
952
errno = e;
983
953
goto mandos_end;
1040
1010
switch(event){
1041
1011
default:
1042
1012
case AVAHI_RESOLVER_FAILURE:
1043
fprintf(stderr, "Mandos plugin mandos-client: "
1044
"(Avahi Resolver) Failed to resolve service '%s'"
1045
" of type '%s' in domain '%s': %s\n", name, type, domain,
1046
avahi_strerror(avahi_server_errno(mc.server)));
1013
fprintf_plus(stderr, "(Avahi Resolver) Failed to resolve service "
1014
"'%s' of type '%s' in domain '%s': %s\n", name, type,
1015
domain,
1016
avahi_strerror(avahi_server_errno(mc.server)));
1047
1017
break;
1048
1018
1049
1019
case AVAHI_RESOLVER_FOUND:
1051
1021
char ip[AVAHI_ADDRESS_STR_MAX];
1052
1022
avahi_address_snprint(ip, sizeof(ip), address);
1053
1023
if(debug){
1054
fprintf(stderr, "Mandos plugin mandos-client: "
1055
"Mandos server \"%s\" found on %s (%s, %"
1056
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
1057
ip, (intmax_t)interface, port);
1024
fprintf_plus(stderr, "Mandos server \"%s\" found on %s (%s, %"
1025
PRIdMAX ") on port %" PRIu16 "\n", name,
1026
host_name, ip, (intmax_t)interface, port);
1058
1027
}
1059
1028
int ret = start_mandos_communication(ip, port, interface,
1060
1029
avahi_proto_to_af(proto));
1092
1061
default:
1093
1062
case AVAHI_BROWSER_FAILURE:
1094
1063
1095
fprintf(stderr, "Mandos plugin mandos-client: "
1096
"(Avahi browser) %s\n",
1097
avahi_strerror(avahi_server_errno(mc.server)));
1064
fprintf_plus(stderr, "(Avahi browser) %s\n",
1065
avahi_strerror(avahi_server_errno(mc.server)));
1098
1066
avahi_simple_poll_quit(mc.simple_poll);
1099
1067
return;
1100
1068
1107
1075
if(avahi_s_service_resolver_new(mc.server, interface, protocol,
1108
1076
name, type, domain, protocol, 0,
1109
1077
resolve_callback, NULL) == NULL)
1110
fprintf(stderr, "Mandos plugin mandos-client: "
1111
"Avahi: Failed to resolve service '%s': %s\n",
1112
name, avahi_strerror(avahi_server_errno(mc.server)));
1078
fprintf_plus(stderr, "Avahi: Failed to resolve service '%s':"
1079
" %s\n", name,
1080
avahi_strerror(avahi_server_errno(mc.server)));
1113
1081
break;
1114
1082
1115
1083
case AVAHI_BROWSER_REMOVE:
1118
1086
case AVAHI_BROWSER_ALL_FOR_NOW:
1119
1087
case AVAHI_BROWSER_CACHE_EXHAUSTED:
1120
1088
if(debug){
1121
fprintf(stderr, "Mandos plugin mandos-client: "
1122
"No Mandos server found, still searching...\n");
1089
fprintf_plus(stderr, "No Mandos server found, still"
1090
" searching...\n");
1123
1091
}
1124
1092
break;
1125
1093
}
1164
1132
/* Reject the loopback device */
1165
1133
if(ifr->ifr_flags & IFF_LOOPBACK){
1166
1134
if(debug){
1167
fprintf(stderr, "Mandos plugin mandos-client: "
1168
"Rejecting loopback interface \"%s\"\n", ifname);
1135
fprintf_plus(stderr, "Rejecting loopback interface \"%s\"\n",
1136
ifname);
1169
1137
}
1170
1138
return false;
1171
1139
}
1172
1140
/* Accept point-to-point devices only if connect_to is specified */
1173
1141
if(connect_to != NULL and (ifr->ifr_flags & IFF_POINTOPOINT)){
1174
1142
if(debug){
1175
fprintf(stderr, "Mandos plugin mandos-client: "
1176
"Accepting point-to-point interface \"%s\"\n", ifname);
1143
fprintf_plus(stderr, "Accepting point-to-point interface"
1144
" \"%s\"\n", ifname);
1177
1145
}
1178
1146
return true;
1179
1147
}
1180
1148
/* Otherwise, reject non-broadcast-capable devices */
1181
1149
if(not (ifr->ifr_flags & IFF_BROADCAST)){
1182
1150
if(debug){
1183
fprintf(stderr, "Mandos plugin mandos-client: "
1184
"Rejecting non-broadcast interface \"%s\"\n", ifname);
1151
fprintf_plus(stderr, "Rejecting non-broadcast interface"
1152
" \"%s\"\n", ifname);
1185
1153
}
1186
1154
return false;
1187
1155
}
1188
1156
/* Reject non-ARP interfaces (including dummy interfaces) */
1189
1157
if(ifr->ifr_flags & IFF_NOARP){
1190
1158
if(debug){
1191
fprintf(stderr, "Mandos plugin mandos-client: "
1192
"Rejecting non-ARP interface \"%s\"\n", ifname);
1159
fprintf_plus(stderr, "Rejecting non-ARP interface \"%s\"\n",
1160
ifname);
1193
1161
}
1194
1162
return false;
1195
1163
}
1196
1164
1197
1165
/* Accept this device */
1198
1166
if(debug){
1199
fprintf(stderr, "Mandos plugin mandos-client: "
1200
"Interface \"%s\" is good\n", ifname);
1167
fprintf_plus(stderr, "Interface \"%s\" is good\n", ifname);
1201
1168
}
1202
1169
return true;
1203
1170
}
1215
1182
struct ifreq ifr;
1216
1183
if(not get_flags(if_entry->d_name, &ifr)){
1217
1184
if(debug){
1218
fprintf(stderr, "Mandos plugin mandos-client: "
1219
"Failed to get flags for interface \"%s\"\n",
1220
if_entry->d_name);
1185
fprintf_plus(stderr, "Failed to get flags for interface "
1186
"\"%s\"\n", if_entry->d_name);
1221
1187
}
1222
1188
return 0;
1223
1189
}
1241
1207
struct ifreq ifr;
1242
1208
if(not get_flags(if_entry->d_name, &ifr)){
1243
1209
if(debug){
1244
fprintf(stderr, "Mandos plugin mandos-client: "
1245
"Failed to get flags for interface \"%s\"\n",
1246
if_entry->d_name);
1210
fprintf_plus(stderr, "Failed to get flags for interface "
1211
"\"%s\"\n", if_entry->d_name);
1247
1212
}
1248
1213
return 0;
1249
1214
}
1251
1216
/* Reject down interfaces */
1252
1217
if(not (ifr.ifr_flags & IFF_UP)){
1253
1218
if(debug){
1254
fprintf(stderr, "Mandos plugin mandos-client: "
1255
"Rejecting down interface \"%s\"\n",
1256
if_entry->d_name);
1219
fprintf_plus(stderr, "Rejecting down interface \"%s\"\n",
1220
if_entry->d_name);
1257
1221
}
1258
1222
return 0;
1259
1223
}
1261
1225
/* Reject non-running interfaces */
1262
1226
if(not (ifr.ifr_flags & IFF_RUNNING)){
1263
1227
if(debug){
1264
fprintf(stderr, "Mandos plugin mandos-client: "
1265
"Rejecting non-running interface \"%s\"\n",
1266
if_entry->d_name);
1228
fprintf_plus(stderr, "Rejecting non-running interface \"%s\"\n",
1229
if_entry->d_name);
1267
1230
}
1268
1231
return 0;
1269
1232
}
1303
1266
if((direntry->d_name)[sret] != '\0'){
1304
1267
/* Contains non-allowed characters */
1305
1268
if(debug){
1306
fprintf(stderr, "Mandos plugin mandos-client: "
1307
"Ignoring hook \"%s\" with bad name\n",
1308
direntry->d_name);
1269
fprintf_plus(stderr, "Ignoring hook \"%s\" with bad name\n",
1270
direntry->d_name);
1309
1271
}
1310
1272
return 0;
1311
1273
}
1327
1289
if(not (S_ISREG(st.st_mode))){
1328
1290
/* Not a regular file */
1329
1291
if(debug){
1330
fprintf(stderr, "Mandos plugin mandos-client: "
1331
"Ignoring hook \"%s\" - not a file\n",
1332
direntry->d_name);
1292
fprintf_plus(stderr, "Ignoring hook \"%s\" - not a file\n",
1293
direntry->d_name);
1333
1294
}
1334
1295
return 0;
1335
1296
}
1336
1297
if(not (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))){
1337
1298
/* Not executable */
1338
1299
if(debug){
1339
fprintf(stderr, "Mandos plugin mandos-client: "
1340
"Ignoring hook \"%s\" - not executable\n",
1341
direntry->d_name);
1300
fprintf_plus(stderr, "Ignoring hook \"%s\" - not executable\n",
1301
direntry->d_name);
1342
1302
}
1343
1303
return 0;
1344
1304
}
1305
if(debug){
1306
fprintf_plus(stderr, "Hook \"%s\" is acceptable\n",
1307
direntry->d_name);
1308
}
1345
1309
return 1;
1346
1310
}
1347
1311
1354
1318
while(true){
1355
1319
if(mc.current_server == NULL){
1356
1320
if (debug){
1357
fprintf(stderr, "Mandos plugin mandos-client: "
1358
"Wait until first server is found. No timeout!\n");
1321
fprintf_plus(stderr, "Wait until first server is found."
1322
" No timeout!\n");
1359
1323
}
1360
1324
ret = avahi_simple_poll_iterate(s, -1);
1361
1325
} else {
1362
1326
if (debug){
1363
fprintf(stderr, "Mandos plugin mandos-client: "
1364
"Check current_server if we should run it,"
1365
" or wait\n");
1327
fprintf_plus(stderr, "Check current_server if we should run"
1328
" it, or wait\n");
1366
1329
}
1367
1330
/* the current time */
1368
1331
ret = clock_gettime(CLOCK_MONOTONIC, &now);
1384
1347
- ((intmax_t)waited_time.tv_nsec / 1000000));
1385
1348
1386
1349
if (debug){
1387
fprintf(stderr, "Mandos plugin mandos-client: "
1388
"Blocking for %" PRIdMAX " ms\n", block_time);
1350
fprintf_plus(stderr, "Blocking for %" PRIdMAX " ms\n",
1351
block_time);
1389
1352
}
1390
1353
1391
1354
if(block_time <= 0){
1418
1381
}
1419
1382
}
1420
1383
1384
bool run_network_hooks(const char *mode, const char *interface,
1385
const float delay){
1386
struct dirent **direntries;
1387
struct dirent *direntry;
1388
int ret;
1389
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1390
alphasort);
1391
if(numhooks == -1){
1392
perror_plus("scandir");
1393
} else {
1394
int devnull = open("/dev/null", O_RDONLY);
1395
for(int i = 0; i < numhooks; i++){
1396
direntry = direntries[i];
1397
char *fullname = NULL;
1398
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1399
if(ret < 0){
1400
perror_plus("asprintf");
1401
continue;
1402
}
1403
if(debug){
1404
fprintf_plus(stderr, "Running network hook \"%s\"\n",
1405
direntry->d_name);
1406
}
1407
pid_t hook_pid = fork();
1408
if(hook_pid == 0){
1409
/* Child */
1410
/* Raise privileges */
1411
errno = 0;
1412
ret = seteuid(0);
1413
if(ret == -1){
1414
perror_plus("seteuid");
1415
}
1416
/* Raise privileges even more */
1417
errno = 0;
1418
ret = setuid(0);
1419
if(ret == -1){
1420
perror_plus("setuid");
1421
}
1422
/* Set group */
1423
errno = 0;
1424
ret = setgid(0);
1425
if(ret == -1){
1426
perror_plus("setgid");
1427
}
1428
/* Reset supplementary groups */
1429
errno = 0;
1430
ret = setgroups(0, NULL);
1431
if(ret == -1){
1432
perror_plus("setgroups");
1433
}
1434
dup2(devnull, STDIN_FILENO);
1435
close(devnull);
1436
dup2(STDERR_FILENO, STDOUT_FILENO);
1437
ret = setenv("MANDOSNETHOOKDIR", hookdir, 1);
1438
if(ret == -1){
1439
perror_plus("setenv");
1440
_exit(EX_OSERR);
1441
}
1442
ret = setenv("DEVICE", interface, 1);
1443
if(ret == -1){
1444
perror_plus("setenv");
1445
_exit(EX_OSERR);
1446
}
1447
ret = setenv("VERBOSE", debug ? "1" : "0", 1);
1448
if(ret == -1){
1449
perror_plus("setenv");
1450
_exit(EX_OSERR);
1451
}
1452
ret = setenv("MODE", mode, 1);
1453
if(ret == -1){
1454
perror_plus("setenv");
1455
_exit(EX_OSERR);
1456
}
1457
char *delaystring;
1458
ret = asprintf(&delaystring, "%f", delay);
1459
if(ret == -1){
1460
perror_plus("asprintf");
1461
_exit(EX_OSERR);
1462
}
1463
ret = setenv("DELAY", delaystring, 1);
1464
if(ret == -1){
1465
free(delaystring);
1466
perror_plus("setenv");
1467
_exit(EX_OSERR);
1468
}
1469
free(delaystring);
1470
ret = execl(fullname, direntry->d_name, mode, NULL);
1471
perror_plus("execl");
1472
} else {
1473
int status;
1474
if(TEMP_FAILURE_RETRY(waitpid(hook_pid, &status, 0)) == -1){
1475
perror_plus("waitpid");
1476
free(fullname);
1477
continue;
1478
}
1479
if(WIFEXITED(status)){
1480
if(WEXITSTATUS(status) != 0){
1481
fprintf_plus(stderr, "Warning: network hook \"%s\" exited"
1482
" with status %d\n", direntry->d_name,
1483
WEXITSTATUS(status));
1484
free(fullname);
1485
continue;
1486
}
1487
} else if(WIFSIGNALED(status)){
1488
fprintf_plus(stderr, "Warning: network hook \"%s\" died by"
1489
" signal %d\n", direntry->d_name,
1490
WTERMSIG(status));
1491
free(fullname);
1492
continue;
1493
} else {
1494
fprintf_plus(stderr, "Warning: network hook \"%s\""
1495
" crashed\n", direntry->d_name);
1496
free(fullname);
1497
continue;
1498
}
1499
}
1500
free(fullname);
1501
if(debug){
1502
fprintf_plus(stderr, "Network hook \"%s\" ran successfully\n",
1503
direntry->d_name);
1504
}
1505
}
1506
close(devnull);
1507
}
1508
return true;
1509
}
1510
1421
1511
int main(int argc, char *argv[]){
1422
1512
AvahiSServiceBrowser *sb = NULL;
1423
1513
int error;
1581
1671
argp_state_help(state, state->out_stream,
1582
1672
ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);
1583
1673
case 'V': /* --version */
1584
fprintf(state->out_stream, "Mandos plugin mandos-client: ");
1585
fprintf(state->out_stream, "%s\n", argp_program_version);
1674
fprintf_plus(state->out_stream,
1675
"Mandos plugin mandos-client: ");
1676
fprintf_plus(state->out_stream, "%s\n", argp_program_version);
1586
1677
exit(argp_err_exit_status);
1587
1678
break;
1588
1679
default:
1615
1706
{
1616
1707
/* Work around Debian bug #633582:
1617
1708
<http://bugs.debian.org/633582> */
1618
struct stat st;
1619
1709
1620
1710
/* Re-raise priviliges */
1621
1711
errno = 0;
1622
1712
ret = seteuid(0);
1623
1713
if(ret == -1){
1624
1714
perror_plus("seteuid");
1625
}
1626
1627
if(strcmp(seckey, PATHDIR "/" SECKEY) == 0){
1628
int seckey_fd = open(seckey, O_RDONLY);
1629
if(seckey_fd == -1){
1630
perror_plus("open");
1631
} else {
1632
ret = (int)TEMP_FAILURE_RETRY(fstat(seckey_fd, &st));
1633
if(ret == -1){
1634
perror_plus("fstat");
1635
} else {
1636
if(S_ISREG(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
1637
ret = fchown(seckey_fd, uid, gid);
1638
if(ret == -1){
1639
perror_plus("fchown");
1640
}
1641
}
1642
}
1643
TEMP_FAILURE_RETRY(close(seckey_fd));
1644
}
1645
}
1646
1647
if(strcmp(pubkey, PATHDIR "/" PUBKEY) == 0){
1648
int pubkey_fd = open(pubkey, O_RDONLY);
1649
if(pubkey_fd == -1){
1650
perror_plus("open");
1651
} else {
1652
ret = (int)TEMP_FAILURE_RETRY(fstat(pubkey_fd, &st));
1653
if(ret == -1){
1654
perror_plus("fstat");
1655
} else {
1656
if(S_ISREG(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
1657
ret = fchown(pubkey_fd, uid, gid);
1658
if(ret == -1){
1659
perror_plus("fchown");
1660
}
1661
}
1662
}
1663
TEMP_FAILURE_RETRY(close(pubkey_fd));
1664
}
1665
}
1666
1667
/* Lower privileges */
1668
errno = 0;
1669
ret = seteuid(uid);
1670
if(ret == -1){
1671
perror_plus("seteuid");
1672
}
1673
}
1674
1675
/* Find network hooks and run them */
1676
{
1677
struct dirent **direntries;
1678
struct dirent *direntry;
1679
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1680
alphasort);
1681
if(numhooks == -1){
1682
perror_plus("scandir");
1683
1715
} else {
1684
int devnull = open("/dev/null", O_RDONLY);
1685
for(int i = 0; i < numhooks; i++){
1686
direntry = direntries[0];
1687
char *fullname = NULL;
1688
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1689
if(ret < 0){
1690
perror_plus("asprintf");
1691
continue;
1692
}
1693
pid_t hook_pid = fork();
1694
if(hook_pid == 0){
1695
/* Child */
1696
dup2(devnull, STDIN_FILENO);
1697
close(devnull);
1698
dup2(STDERR_FILENO, STDOUT_FILENO);
1699
ret = setenv("MANDOSNETHOOKDIR", hookdir, 1);
1700
if(ret == -1){
1701
perror_plus("setenv");
1702
exit(1);
1703
}
1704
ret = setenv("DEVICE", interface, 1);
1705
if(ret == -1){
1706
perror_plus("setenv");
1707
exit(1);
1708
}
1709
ret = setenv("VERBOSE", debug ? "1" : "0", 1);
1710
if(ret == -1){
1711
perror_plus("setenv");
1712
exit(1);
1713
}
1714
ret = setenv("MODE", "start", 1);
1715
if(ret == -1){
1716
perror_plus("setenv");
1717
exit(1);
1718
}
1719
char *delaystring;
1720
ret = asprintf(&delaystring, "%f", delay);
1721
if(ret == -1){
1722
perror_plus("asprintf");
1723
exit(1);
1724
}
1725
ret = setenv("DELAY", delaystring, 1);
1726
if(ret == -1){
1727
free(delaystring);
1728
perror_plus("setenv");
1729
exit(1);
1730
}
1731
free(delaystring);
1732
ret = execl(fullname, direntry->d_name, "start", NULL);
1733
perror_plus("execl");
1734
} else {
1735
int status;
1736
if(TEMP_FAILURE_RETRY(waitpid(hook_pid, &status, 0)) == -1){
1737
perror_plus("waitpid");
1738
free(fullname);
1739
continue;
1740
}
1741
if(WIFEXITED(status)){
1742
if(WEXITSTATUS(status) != 0){
1743
fprintf(stderr, "Mandos plugin mandos-client: "
1744
"Warning: network hook \"%s\" exited"
1745
" with status %d\n", direntry->d_name,
1746
WEXITSTATUS(status));
1747
free(fullname);
1748
continue;
1749
}
1750
} else if(WIFSIGNALED(status)){
1751
fprintf(stderr, "Mandos plugin mandos-client: "
1752
"Warning: network hook \"%s\" died by"
1753
" signal %d\n", direntry->d_name,
1754
WTERMSIG(status));
1755
free(fullname);
1756
continue;
1757
} else {
1758
fprintf(stderr, "Mandos plugin mandos-client: "
1759
"Warning: network hook \"%s\" crashed\n",
1760
direntry->d_name);
1761
free(fullname);
1762
continue;
1763
}
1764
}
1765
free(fullname);
1766
if(quit_now){
1767
goto end;
1768
}
1769
}
1770
close(devnull);
1716
struct stat st;
1717
1718
if(strcmp(seckey, PATHDIR "/" SECKEY) == 0){
1719
int seckey_fd = open(seckey, O_RDONLY);
1720
if(seckey_fd == -1){
1721
perror_plus("open");
1722
} else {
1723
ret = (int)TEMP_FAILURE_RETRY(fstat(seckey_fd, &st));
1724
if(ret == -1){
1725
perror_plus("fstat");
1726
} else {
1727
if(S_ISREG(st.st_mode)
1728
and st.st_uid == 0 and st.st_gid == 0){
1729
ret = fchown(seckey_fd, uid, gid);
1730
if(ret == -1){
1731
perror_plus("fchown");
1732
}
1733
}
1734
}
1735
TEMP_FAILURE_RETRY(close(seckey_fd));
1736
}
1737
}
1738
1739
if(strcmp(pubkey, PATHDIR "/" PUBKEY) == 0){
1740
int pubkey_fd = open(pubkey, O_RDONLY);
1741
if(pubkey_fd == -1){
1742
perror_plus("open");
1743
} else {
1744
ret = (int)TEMP_FAILURE_RETRY(fstat(pubkey_fd, &st));
1745
if(ret == -1){
1746
perror_plus("fstat");
1747
} else {
1748
if(S_ISREG(st.st_mode)
1749
and st.st_uid == 0 and st.st_gid == 0){
1750
ret = fchown(pubkey_fd, uid, gid);
1751
if(ret == -1){
1752
perror_plus("fchown");
1753
}
1754
}
1755
}
1756
TEMP_FAILURE_RETRY(close(pubkey_fd));
1757
}
1758
}
1759
1760
/* Lower privileges */
1761
errno = 0;
1762
ret = seteuid(uid);
1763
if(ret == -1){
1764
perror_plus("seteuid");
1765
}
1771
1766
}
1772
1767
}
1773
1768
1769
/* Run network hooks */
1770
if(not run_network_hooks("start", interface, delay)){
1771
goto end;
1772
}
1773
1774
1774
if(not debug){
1775
1775
avahi_set_log_function(empty_log);
1776
1776
}
1790
1790
/* Pick the first interface returned */
1791
1791
interface = strdup(direntries[0]->d_name);
1792
1792
if(debug){
1793
fprintf(stderr, "Mandos plugin mandos-client: "
1794
"Using interface \"%s\"\n", interface);
1793
fprintf_plus(stderr, "Using interface \"%s\"\n", interface);
1795
1794
}
1796
1795
if(interface == NULL){
1797
1796
perror_plus("malloc");
1802
1801
free(direntries);
1803
1802
} else {
1804
1803
free(direntries);
1805
fprintf(stderr, "Mandos plugin mandos-client: "
1806
"Could not find a network interface\n");
1804
fprintf_plus(stderr, "Could not find a network interface\n");
1807
1805
exitcode = EXIT_FAILURE;
1808
1806
goto end;
1809
1807
}
1815
1813
srand((unsigned int) time(NULL));
1816
1814
mc.simple_poll = avahi_simple_poll_new();
1817
1815
if(mc.simple_poll == NULL){
1818
fprintf(stderr, "Mandos plugin mandos-client: "
1819
"Avahi: Failed to create simple poll object.\n");
1816
fprintf_plus(stderr,
1817
"Avahi: Failed to create simple poll object.\n");
1820
1818
exitcode = EX_UNAVAILABLE;
1821
1819
goto end;
1822
1820
}
1888
1886
if(strcmp(interface, "none") != 0){
1889
1887
if_index = (AvahiIfIndex) if_nametoindex(interface);
1890
1888
if(if_index == 0){
1891
fprintf(stderr, "Mandos plugin mandos-client: "
1892
"No such interface: \"%s\"\n", interface);
1889
fprintf_plus(stderr, "No such interface: \"%s\"\n", interface);
1893
1890
exitcode = EX_UNAVAILABLE;
1894
1891
goto end;
1895
1892
}
2015
2012
#endif /* __linux__ */
2016
2013
/* Lower privileges */
2017
2014
errno = 0;
2018
if(take_down_interface){
2019
/* Lower privileges */
2020
ret = seteuid(uid);
2021
if(ret == -1){
2022
perror_plus("seteuid");
2023
}
2024
} else {
2025
/* Lower privileges permanently */
2026
ret = setuid(uid);
2027
if(ret == -1){
2028
perror_plus("setuid");
2029
}
2015
/* Lower privileges */
2016
ret = seteuid(uid);
2017
if(ret == -1){
2018
perror_plus("seteuid");
2030
2019
}
2031
2020
}
2032
2021
2036
2025
2037
2026
ret = init_gnutls_global(pubkey, seckey);
2038
2027
if(ret == -1){
2039
fprintf(stderr, "Mandos plugin mandos-client: "
2040
"init_gnutls_global failed\n");
2028
fprintf_plus(stderr, "init_gnutls_global failed\n");
2041
2029
exitcode = EX_UNAVAILABLE;
2042
2030
goto end;
2043
2031
} else {
2059
2047
}
2060
2048
2061
2049
if(not init_gpgme(pubkey, seckey, tempdir)){
2062
fprintf(stderr, "Mandos plugin mandos-client: "
2063
"init_gpgme failed\n");
2050
fprintf_plus(stderr, "init_gpgme failed\n");
2064
2051
exitcode = EX_UNAVAILABLE;
2065
2052
goto end;
2066
2053
} else {
2076
2063
/* (Mainly meant for debugging) */
2077
2064
char *address = strrchr(connect_to, ':');
2078
2065
if(address == NULL){
2079
fprintf(stderr, "Mandos plugin mandos-client: "
2080
"No colon in address\n");
2066
fprintf_plus(stderr, "No colon in address\n");
2081
2067
exitcode = EX_USAGE;
2082
2068
goto end;
2083
2069
}
2091
2077
tmpmax = strtoimax(address+1, &tmp, 10);
2092
2078
if(errno != 0 or tmp == address+1 or *tmp != '\0'
2093
2079
or tmpmax != (uint16_t)tmpmax){
2094
fprintf(stderr, "Mandos plugin mandos-client: "
2095
"Bad port number\n");
2080
fprintf_plus(stderr, "Bad port number\n");
2096
2081
exitcode = EX_USAGE;
2097
2082
goto end;
2098
2083
}
2128
2113
break;
2129
2114
}
2130
2115
if(debug){
2131
fprintf(stderr, "Mandos plugin mandos-client: "
2132
"Retrying in %d seconds\n", (int)retry_interval);
2116
fprintf_plus(stderr, "Retrying in %d seconds\n",
2117
(int)retry_interval);
2133
2118
}
2134
2119
sleep((int)retry_interval);
2135
2120
}
2165
2150
2166
2151
/* Check if creating the Avahi server object succeeded */
2167
2152
if(mc.server == NULL){
2168
fprintf(stderr, "Mandos plugin mandos-client: "
2169
"Failed to create Avahi server: %s\n",
2170
avahi_strerror(error));
2153
fprintf_plus(stderr, "Failed to create Avahi server: %s\n",
2154
avahi_strerror(error));
2171
2155
exitcode = EX_UNAVAILABLE;
2172
2156
goto end;
2173
2157
}
2181
2165
AVAHI_PROTO_UNSPEC, "_mandos._tcp",
2182
2166
NULL, 0, browse_callback, NULL);
2183
2167
if(sb == NULL){
2184
fprintf(stderr, "Mandos plugin mandos-client: "
2185
"Failed to create service browser: %s\n",
2186
avahi_strerror(avahi_server_errno(mc.server)));
2168
fprintf_plus(stderr, "Failed to create service browser: %s\n",
2169
avahi_strerror(avahi_server_errno(mc.server)));
2187
2170
exitcode = EX_UNAVAILABLE;
2188
2171
goto end;
2189
2172
}
2195
2178
/* Run the main loop */
2196
2179
2197
2180
if(debug){
2198
fprintf(stderr, "Mandos plugin mandos-client: "
2199
"Starting Avahi loop search\n");
2181
fprintf_plus(stderr, "Starting Avahi loop search\n");
2200
2182
}
2201
2183
2202
2184
ret = avahi_loop_with_timeout(mc.simple_poll,
2203
2185
(int)(retry_interval * 1000));
2204
2186
if(debug){
2205
fprintf(stderr, "Mandos plugin mandos-client: "
2206
"avahi_loop_with_timeout exited %s\n",
2207
(ret == 0) ? "successfully" : "with error");
2187
fprintf_plus(stderr, "avahi_loop_with_timeout exited %s\n",
2188
(ret == 0) ? "successfully" : "with error");
2208
2189
}
2209
2190
2210
2191
end:
2211
2192
2212
2193
if(debug){
2213
fprintf(stderr, "Mandos plugin mandos-client: "
2214
"%s exiting\n", argv[0]);
2194
fprintf_plus(stderr, "%s exiting\n", argv[0]);
2215
2195
}
2216
2196
2217
2197
/* Cleanup things */
2233
2213
if(gpgme_initialized){
2234
2214
gpgme_release(mc.ctx);
2235
2215
}
2236
2216
2237
2217
/* Cleans up the circular linked list of Mandos servers the client
2238
2218
has seen */
2239
2219
if(mc.current_server != NULL){
2245
2225
}
2246
2226
}
2247
2227
2248
/* XXX run network hooks "stop" here */
2228
/* Run network hooks */
2229
run_network_hooks("stop", interface, delay);
2249
2230
2250
/* Take down the network interface */
2251
if(take_down_interface){
2252
/* Re-raise priviliges */
2231
/* Re-raise priviliges */
2232
{
2253
2233
errno = 0;
2254
2234
ret = seteuid(0);
2255
2235
if(ret == -1){
2256
2236
perror_plus("seteuid");
2257
2237
}
2258
if(geteuid() == 0){
2238
2239
/* Take down the network interface */
2240
if(take_down_interface and geteuid() == 0){
2259
2241
ret = ioctl(sd, SIOCGIFFLAGS, &network);
2260
2242
if(ret == -1){
2261
2243
perror_plus("ioctl SIOCGIFFLAGS");
2270
2252
if(ret == -1){
2271
2253
perror_plus("close");
2272
2254
}
2273
/* Lower privileges permanently */
2274
errno = 0;
2275
ret = setuid(uid);
2276
if(ret == -1){
2277
perror_plus("setuid");
2278
}
2279
2255
}
2280
2256
}
2257
/* Lower privileges permanently */
2258
errno = 0;
2259
ret = setuid(uid);
2260
if(ret == -1){
2261
perror_plus("setuid");
2262
}
2281
2263
2282
2264
/* Removes the GPGME temp directory and all files inside */
2283
2265
if(tempdir_created){
2297
2279
}
2298
2280
ret = remove(fullname);
2299
2281
if(ret == -1){
2300
fprintf(stderr, "Mandos plugin mandos-client: "
2301
"remove(\"%s\"): %s\n", fullname, strerror(errno));
2282
fprintf_plus(stderr, "remove(\"%s\"): %s\n", fullname,
2283
strerror(errno));
2302
2284
}
2303
2285
free(fullname);
2304
2286
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0