To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to plugins.d/mandos-client.c
- browse files at revision 24.1.176
- compare with another revision
- download diff
- download tarball
- view history from revision 24.1.176
- Committer: Björn Påhlsson
- Date: 2011-07-25 18:47:45 UTC
- mto: This revision was merged to the branch mainline in revision 489.
- Revision ID: belorn@fukt.bsnet.se-20110725184745-leavsoyu1hll3mdp
free dirents in password-prompt
- files removed:
- debian/source/local-options
- files modified:
- DBUS-API
added
removed
plugins.d/mandos-client.c
26
26
* along with this program. If not, see
27
27
* <http://www.gnu.org/licenses/>.
28
28
*
29
* Contact the authors at <mandos@recompile.se>.
29
* Contact the authors at <mandos@fukt.bsnet.se>.
30
30
*/
31
31
32
32
/* Needed by GPGME, specifically gpgme_data_seek() */
53
53
sockaddr_in6, PF_INET6,
54
54
SOCK_STREAM, uid_t, gid_t, open(),
55
55
opendir(), DIR */
56
#include <sys/stat.h> /* open(), S_ISREG */
56
#include <sys/stat.h> /* open() */
57
57
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
58
58
inet_pton(), connect() */
59
59
#include <fcntl.h> /* open() */
85
85
raise() */
86
86
#include <sysexits.h> /* EX_OSERR, EX_USAGE, EX_UNAVAILABLE,
87
87
EX_NOHOST, EX_IOERR, EX_PROTOCOL */
88
#include <sys/wait.h> /* waitpid(), WIFEXITED(),
89
WEXITSTATUS(), WTERMSIG() */
90
88
91
89
#ifdef __linux__
92
90
#include <sys/klog.h> /* klogctl() */
125
123
#define PATHDIR "/conf/conf.d/mandos"
126
124
#define SECKEY "seckey.txt"
127
125
#define PUBKEY "pubkey.txt"
128
#define HOOKDIR "/lib/mandos/network-hooks.d"
129
126
130
127
bool debug = false;
131
128
static const char mandos_protocol_version[] = "1";
132
129
const char *argp_program_version = "mandos-client " VERSION;
133
const char *argp_program_bug_address = "<mandos@recompile.se>";
130
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
134
131
static const char sys_class_net[] = "/sys/class/net";
135
132
char *connect_to = NULL;
136
const char *hookdir = HOOKDIR;
137
133
138
134
/* Doubly linked list that need to be circularly linked when used */
139
135
typedef struct server{
191
187
return buffer_capacity;
192
188
}
193
189
194
/* Add server to set of servers to retry periodically */
195
190
int add_server(const char *ip, uint16_t port,
196
191
AvahiIfIndex if_index,
197
192
int af){
209
204
perror_plus("strdup");
210
205
return -1;
211
206
}
212
/* Special case of first server */
207
/* unique case of first server */
213
208
if (mc.current_server == NULL){
214
209
new_server->next = new_server;
215
210
new_server->prev = new_server;
216
211
mc.current_server = new_server;
217
/* Place the new server last in the list */
212
/* Placing the new server last in the list */
218
213
} else {
219
214
new_server->next = mc.current_server;
220
215
new_server->prev = mc.current_server->prev;
254
249
255
250
rc = gpgme_data_new_from_fd(&pgp_data, fd);
256
251
if(rc != GPG_ERR_NO_ERROR){
257
fprintf(stderr, "Mandos plugin mandos-client: "
258
"bad gpgme_data_new_from_fd: %s: %s\n",
252
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
259
253
gpgme_strsource(rc), gpgme_strerror(rc));
260
254
return false;
261
255
}
262
256
263
257
rc = gpgme_op_import(mc.ctx, pgp_data);
264
258
if(rc != GPG_ERR_NO_ERROR){
265
fprintf(stderr, "Mandos plugin mandos-client: "
266
"bad gpgme_op_import: %s: %s\n",
259
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
267
260
gpgme_strsource(rc), gpgme_strerror(rc));
268
261
return false;
269
262
}
277
270
}
278
271
279
272
if(debug){
280
fprintf(stderr, "Mandos plugin mandos-client: "
281
"Initializing GPGME\n");
273
fprintf(stderr, "Initializing GPGME\n");
282
274
}
283
275
284
276
/* Init GPGME */
285
277
gpgme_check_version(NULL);
286
278
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
287
279
if(rc != GPG_ERR_NO_ERROR){
288
fprintf(stderr, "Mandos plugin mandos-client: "
289
"bad gpgme_engine_check_version: %s: %s\n",
280
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
290
281
gpgme_strsource(rc), gpgme_strerror(rc));
291
282
return false;
292
283
}
293
284
294
/* Set GPGME home directory for the OpenPGP engine only */
285
/* Set GPGME home directory for the OpenPGP engine only */
295
286
rc = gpgme_get_engine_info(&engine_info);
296
287
if(rc != GPG_ERR_NO_ERROR){
297
fprintf(stderr, "Mandos plugin mandos-client: "
298
"bad gpgme_get_engine_info: %s: %s\n",
288
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
299
289
gpgme_strsource(rc), gpgme_strerror(rc));
300
290
return false;
301
291
}
308
298
engine_info = engine_info->next;
309
299
}
310
300
if(engine_info == NULL){
311
fprintf(stderr, "Mandos plugin mandos-client: "
312
"Could not set GPGME home dir to %s\n", tempdir);
301
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
313
302
return false;
314
303
}
315
304
316
305
/* Create new GPGME "context" */
317
306
rc = gpgme_new(&(mc.ctx));
318
307
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));
308
fprintf(stderr, "bad gpgme_new: %s: %s\n",
309
gpgme_strsource(rc), gpgme_strerror(rc));
322
310
return false;
323
311
}
324
312
343
331
ssize_t plaintext_length = 0;
344
332
345
333
if(debug){
346
fprintf(stderr, "Mandos plugin mandos-client: "
347
"Trying to decrypt OpenPGP data\n");
334
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
348
335
}
349
336
350
337
/* Create new GPGME data buffer from memory cryptotext */
351
338
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
352
339
0);
353
340
if(rc != GPG_ERR_NO_ERROR){
354
fprintf(stderr, "Mandos plugin mandos-client: "
355
"bad gpgme_data_new_from_mem: %s: %s\n",
341
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
356
342
gpgme_strsource(rc), gpgme_strerror(rc));
357
343
return -1;
358
344
}
360
346
/* Create new empty GPGME data buffer for the plaintext */
361
347
rc = gpgme_data_new(&dh_plain);
362
348
if(rc != GPG_ERR_NO_ERROR){
363
fprintf(stderr, "Mandos plugin mandos-client: "
364
"bad gpgme_data_new: %s: %s\n",
349
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
365
350
gpgme_strsource(rc), gpgme_strerror(rc));
366
351
gpgme_data_release(dh_crypto);
367
352
return -1;
371
356
data buffer */
372
357
rc = gpgme_op_decrypt(mc.ctx, dh_crypto, dh_plain);
373
358
if(rc != GPG_ERR_NO_ERROR){
374
fprintf(stderr, "Mandos plugin mandos-client: "
375
"bad gpgme_op_decrypt: %s: %s\n",
359
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
376
360
gpgme_strsource(rc), gpgme_strerror(rc));
377
361
plaintext_length = -1;
378
362
if(debug){
379
363
gpgme_decrypt_result_t result;
380
364
result = gpgme_op_decrypt_result(mc.ctx);
381
365
if(result == NULL){
382
fprintf(stderr, "Mandos plugin mandos-client: "
383
"gpgme_op_decrypt_result failed\n");
366
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
384
367
} else {
385
fprintf(stderr, "Mandos plugin mandos-client: "
386
"Unsupported algorithm: %s\n",
368
fprintf(stderr, "Unsupported algorithm: %s\n",
387
369
result->unsupported_algorithm);
388
fprintf(stderr, "Mandos plugin mandos-client: "
389
"Wrong key usage: %u\n",
370
fprintf(stderr, "Wrong key usage: %u\n",
390
371
result->wrong_key_usage);
391
372
if(result->file_name != NULL){
392
fprintf(stderr, "Mandos plugin mandos-client: "
393
"File name: %s\n", result->file_name);
373
fprintf(stderr, "File name: %s\n", result->file_name);
394
374
}
395
375
gpgme_recipient_t recipient;
396
376
recipient = result->recipients;
397
377
while(recipient != NULL){
398
fprintf(stderr, "Mandos plugin mandos-client: "
399
"Public key algorithm: %s\n",
378
fprintf(stderr, "Public key algorithm: %s\n",
400
379
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",
380
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
381
fprintf(stderr, "Secret key available: %s\n",
405
382
recipient->status == GPG_ERR_NO_SECKEY
406
383
? "No" : "Yes");
407
384
recipient = recipient->next;
412
389
}
413
390
414
391
if(debug){
415
fprintf(stderr, "Mandos plugin mandos-client: "
416
"Decryption of OpenPGP data succeeded\n");
392
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
417
393
}
418
394
419
395
/* Seek back to the beginning of the GPGME plaintext data buffer */
450
426
}
451
427
452
428
if(debug){
453
fprintf(stderr, "Mandos plugin mandos-client: "
454
"Decrypted password is: ");
429
fprintf(stderr, "Decrypted password is: ");
455
430
for(ssize_t i = 0; i < plaintext_length; i++){
456
431
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
457
432
}
479
454
/* GnuTLS log function callback */
480
455
static void debuggnutls(__attribute__((unused)) int level,
481
456
const char* string){
482
fprintf(stderr, "Mandos plugin mandos-client: GnuTLS: %s", string);
457
fprintf(stderr, "GnuTLS: %s", string);
483
458
}
484
459
485
460
static int init_gnutls_global(const char *pubkeyfilename,
487
462
int ret;
488
463
489
464
if(debug){
490
fprintf(stderr, "Mandos plugin mandos-client: "
491
"Initializing GnuTLS\n");
465
fprintf(stderr, "Initializing GnuTLS\n");
492
466
}
493
467
494
468
ret = gnutls_global_init();
495
469
if(ret != GNUTLS_E_SUCCESS){
496
fprintf(stderr, "Mandos plugin mandos-client: "
497
"GnuTLS global_init: %s\n", safer_gnutls_strerror(ret));
470
fprintf(stderr, "GnuTLS global_init: %s\n",
471
safer_gnutls_strerror(ret));
498
472
return -1;
499
473
}
500
474
509
483
/* OpenPGP credentials */
510
484
ret = gnutls_certificate_allocate_credentials(&mc.cred);
511
485
if(ret != GNUTLS_E_SUCCESS){
512
fprintf(stderr, "Mandos plugin mandos-client: "
513
"GnuTLS memory error: %s\n", safer_gnutls_strerror(ret));
486
fprintf(stderr, "GnuTLS memory error: %s\n",
487
safer_gnutls_strerror(ret));
514
488
gnutls_global_deinit();
515
489
return -1;
516
490
}
517
491
518
492
if(debug){
519
fprintf(stderr, "Mandos plugin mandos-client: "
520
"Attempting to use OpenPGP public key %s and"
493
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
521
494
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
522
495
seckeyfilename);
523
496
}
527
500
GNUTLS_OPENPGP_FMT_BASE64);
528
501
if(ret != GNUTLS_E_SUCCESS){
529
502
fprintf(stderr,
530
"Mandos plugin mandos-client: "
531
503
"Error[%d] while reading the OpenPGP key pair ('%s',"
532
504
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
533
fprintf(stderr, "Mandos plugin mandos-client: "
534
"The GnuTLS error is: %s\n", safer_gnutls_strerror(ret));
505
fprintf(stderr, "The GnuTLS error is: %s\n",
506
safer_gnutls_strerror(ret));
535
507
goto globalfail;
536
508
}
537
509
538
510
/* GnuTLS server initialization */
539
511
ret = gnutls_dh_params_init(&mc.dh_params);
540
512
if(ret != GNUTLS_E_SUCCESS){
541
fprintf(stderr, "Mandos plugin mandos-client: "
542
"Error in GnuTLS DH parameter initialization:"
513
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
543
514
" %s\n", safer_gnutls_strerror(ret));
544
515
goto globalfail;
545
516
}
546
517
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
547
518
if(ret != GNUTLS_E_SUCCESS){
548
fprintf(stderr, "Mandos plugin mandos-client: "
549
"Error in GnuTLS prime generation: %s\n",
519
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
550
520
safer_gnutls_strerror(ret));
551
521
goto globalfail;
552
522
}
573
543
}
574
544
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
575
545
if(ret != GNUTLS_E_SUCCESS){
576
fprintf(stderr, "Mandos plugin mandos-client: "
577
"Error in GnuTLS session initialization: %s\n",
546
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
578
547
safer_gnutls_strerror(ret));
579
548
}
580
549
588
557
}
589
558
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
590
559
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));
560
fprintf(stderr, "Syntax error at: %s\n", err);
561
fprintf(stderr, "GnuTLS error: %s\n",
562
safer_gnutls_strerror(ret));
595
563
gnutls_deinit(*session);
596
564
return -1;
597
565
}
606
574
}
607
575
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
608
576
if(ret != GNUTLS_E_SUCCESS){
609
fprintf(stderr, "Mandos plugin mandos-client: "
610
"Error setting GnuTLS credentials: %s\n",
577
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
611
578
safer_gnutls_strerror(ret));
612
579
gnutls_deinit(*session);
613
580
return -1;
659
626
pf = PF_INET;
660
627
break;
661
628
default:
662
fprintf(stderr, "Mandos plugin mandos-client: "
663
"Bad address family: %d\n", af);
629
fprintf(stderr, "Bad address family: %d\n", af);
664
630
errno = EINVAL;
665
631
return -1;
666
632
}
671
637
}
672
638
673
639
if(debug){
674
fprintf(stderr, "Mandos plugin mandos-client: "
675
"Setting up a TCP connection to %s, port %" PRIu16
640
fprintf(stderr, "Setting up a TCP connection to %s, port %" PRIu16
676
641
"\n", ip, port);
677
642
}
678
643
705
670
}
706
671
if(ret == 0){
707
672
int e = errno;
708
fprintf(stderr, "Mandos plugin mandos-client: "
709
"Bad address: %s\n", ip);
673
fprintf(stderr, "Bad address: %s\n", ip);
710
674
errno = e;
711
675
goto mandos_end;
712
676
}
719
683
(&to.in6.sin6_addr)){ /* -Wstrict-aliasing=2 or lower and
720
684
-Wunreachable-code*/
721
685
if(if_index == AVAHI_IF_UNSPEC){
722
fprintf(stderr, "Mandos plugin mandos-client: "
723
"An IPv6 link-local address is incomplete"
686
fprintf(stderr, "An IPv6 link-local address is incomplete"
724
687
" without a network interface\n");
725
688
errno = EINVAL;
726
689
goto mandos_end;
745
708
if(if_indextoname((unsigned int)if_index, interface) == NULL){
746
709
perror_plus("if_indextoname");
747
710
} else {
748
fprintf(stderr, "Mandos plugin mandos-client: "
749
"Connection to: %s%%%s, port %" PRIu16 "\n",
711
fprintf(stderr, "Connection to: %s%%%s, port %" PRIu16 "\n",
750
712
ip, interface, port);
751
713
}
752
714
} else {
753
fprintf(stderr, "Mandos plugin mandos-client: "
754
"Connection to: %s, port %" PRIu16 "\n", ip, port);
715
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
716
port);
755
717
}
756
718
char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
757
719
INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
767
729
perror_plus("inet_ntop");
768
730
} else {
769
731
if(strcmp(addrstr, ip) != 0){
770
fprintf(stderr, "Mandos plugin mandos-client: "
771
"Canonical address form: %s\n", addrstr);
732
fprintf(stderr, "Canonical address form: %s\n", addrstr);
772
733
}
773
734
}
774
735
}
828
789
}
829
790
830
791
if(debug){
831
fprintf(stderr, "Mandos plugin mandos-client: "
832
"Establishing TLS session with %s\n", ip);
792
fprintf(stderr, "Establishing TLS session with %s\n", ip);
833
793
}
834
794
835
795
if(quit_now){
855
815
856
816
if(ret != GNUTLS_E_SUCCESS){
857
817
if(debug){
858
fprintf(stderr, "Mandos plugin mandos-client: "
859
"*** GnuTLS Handshake failed ***\n");
818
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
860
819
gnutls_perror(ret);
861
820
}
862
821
errno = EPROTO;
866
825
/* Read OpenPGP packet that contains the wanted password */
867
826
868
827
if(debug){
869
fprintf(stderr, "Mandos plugin mandos-client: "
870
"Retrieving OpenPGP encrypted password from %s\n", ip);
828
fprintf(stderr, "Retrieving OpenPGP encrypted password from %s\n",
829
ip);
871
830
}
872
831
873
832
while(true){
911
870
}
912
871
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
913
872
if(ret < 0){
914
fprintf(stderr, "Mandos plugin mandos-client: "
915
"*** GnuTLS Re-handshake failed ***\n");
873
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
916
874
gnutls_perror(ret);
917
875
errno = EPROTO;
918
876
goto mandos_end;
919
877
}
920
878
break;
921
879
default:
922
fprintf(stderr, "Mandos plugin mandos-client: "
923
"Unknown error while reading data from"
880
fprintf(stderr, "Unknown error while reading data from"
924
881
" encrypted session with Mandos server\n");
925
882
gnutls_bye(session, GNUTLS_SHUT_RDWR);
926
883
errno = EIO;
932
889
}
933
890
934
891
if(debug){
935
fprintf(stderr, "Mandos plugin mandos-client: "
936
"Closing TLS session\n");
892
fprintf(stderr, "Closing TLS session\n");
937
893
}
938
894
939
895
if(quit_now){
969
925
if(ret == 0 and ferror(stdout)){
970
926
int e = errno;
971
927
if(debug){
972
fprintf(stderr, "Mandos plugin mandos-client: "
973
"Error writing encrypted data: %s\n",
928
fprintf(stderr, "Error writing encrypted data: %s\n",
974
929
strerror(errno));
975
930
}
976
931
errno = e;
1034
989
switch(event){
1035
990
default:
1036
991
case AVAHI_RESOLVER_FAILURE:
1037
fprintf(stderr, "Mandos plugin mandos-client: "
1038
"(Avahi Resolver) Failed to resolve service '%s'"
992
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
1039
993
" of type '%s' in domain '%s': %s\n", name, type, domain,
1040
994
avahi_strerror(avahi_server_errno(mc.server)));
1041
995
break;
1045
999
char ip[AVAHI_ADDRESS_STR_MAX];
1046
1000
avahi_address_snprint(ip, sizeof(ip), address);
1047
1001
if(debug){
1048
fprintf(stderr, "Mandos plugin mandos-client: "
1049
"Mandos server \"%s\" found on %s (%s, %"
1002
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
1050
1003
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
1051
1004
ip, (intmax_t)interface, port);
1052
1005
}
1086
1039
default:
1087
1040
case AVAHI_BROWSER_FAILURE:
1088
1041
1089
fprintf(stderr, "Mandos plugin mandos-client: "
1090
"(Avahi browser) %s\n",
1042
fprintf(stderr, "(Avahi browser) %s\n",
1091
1043
avahi_strerror(avahi_server_errno(mc.server)));
1092
1044
avahi_simple_poll_quit(mc.simple_poll);
1093
1045
return;
1101
1053
if(avahi_s_service_resolver_new(mc.server, interface, protocol,
1102
1054
name, type, domain, protocol, 0,
1103
1055
resolve_callback, NULL) == NULL)
1104
fprintf(stderr, "Mandos plugin mandos-client: "
1105
"Avahi: Failed to resolve service '%s': %s\n",
1056
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
1106
1057
name, avahi_strerror(avahi_server_errno(mc.server)));
1107
1058
break;
1108
1059
1112
1063
case AVAHI_BROWSER_ALL_FOR_NOW:
1113
1064
case AVAHI_BROWSER_CACHE_EXHAUSTED:
1114
1065
if(debug){
1115
fprintf(stderr, "Mandos plugin mandos-client: "
1116
"No Mandos server found, still searching...\n");
1066
fprintf(stderr, "No Mandos server found, still searching...\n");
1117
1067
}
1118
1068
break;
1119
1069
}
1134
1084
errno = old_errno;
1135
1085
}
1136
1086
1137
bool get_flags(const char *ifname, struct ifreq *ifr){
1138
int ret;
1139
1140
int s = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1141
if(s < 0){
1142
perror_plus("socket");
1143
return false;
1144
}
1145
strcpy(ifr->ifr_name, ifname);
1146
ret = ioctl(s, SIOCGIFFLAGS, ifr);
1147
if(ret == -1){
1087
/*
1088
* This function determines if a directory entry in /sys/class/net
1089
* corresponds to an acceptable network device.
1090
* (This function is passed to scandir(3) as a filter function.)
1091
*/
1092
int good_interface(const struct dirent *if_entry){
1093
ssize_t ssret;
1094
char *flagname = NULL;
1095
if(if_entry->d_name[0] == '.'){
1096
return 0;
1097
}
1098
int ret = asprintf(&flagname, "%s/%s/flags", sys_class_net,
1099
if_entry->d_name);
1100
if(ret < 0){
1101
perror_plus("asprintf");
1102
return 0;
1103
}
1104
int flags_fd = (int)TEMP_FAILURE_RETRY(open(flagname, O_RDONLY));
1105
if(flags_fd == -1){
1106
perror_plus("open");
1107
free(flagname);
1108
return 0;
1109
}
1110
free(flagname);
1111
typedef short ifreq_flags; /* ifreq.ifr_flags in netdevice(7) */
1112
/* read line from flags_fd */
1113
ssize_t to_read = 2+(sizeof(ifreq_flags)*2)+1; /* "0x1003\n" */
1114
char *flagstring = malloc((size_t)to_read+1); /* +1 for final \0 */
1115
flagstring[(size_t)to_read] = '\0';
1116
if(flagstring == NULL){
1117
perror_plus("malloc");
1118
close(flags_fd);
1119
return 0;
1120
}
1121
while(to_read > 0){
1122
ssret = (ssize_t)TEMP_FAILURE_RETRY(read(flags_fd, flagstring,
1123
(size_t)to_read));
1124
if(ssret == -1){
1125
perror_plus("read");
1126
free(flagstring);
1127
close(flags_fd);
1128
return 0;
1129
}
1130
to_read -= ssret;
1131
if(ssret == 0){
1132
break;
1133
}
1134
}
1135
close(flags_fd);
1136
intmax_t tmpmax;
1137
char *tmp;
1138
errno = 0;
1139
tmpmax = strtoimax(flagstring, &tmp, 0);
1140
if(errno != 0 or tmp == flagstring or (*tmp != '\0'
1141
and not (isspace(*tmp)))
1142
or tmpmax != (ifreq_flags)tmpmax){
1148
1143
if(debug){
1149
perror_plus("ioctl SIOCGIFFLAGS");
1144
fprintf(stderr, "Invalid flags \"%s\" for interface \"%s\"\n",
1145
flagstring, if_entry->d_name);
1150
1146
}
1151
return false;
1147
free(flagstring);
1148
return 0;
1152
1149
}
1153
return true;
1154
}
1155
1156
bool good_flags(const char *ifname, const struct ifreq *ifr){
1157
1150
free(flagstring);
1151
ifreq_flags flags = (ifreq_flags)tmpmax;
1158
1152
/* Reject the loopback device */
1159
if(ifr->ifr_flags & IFF_LOOPBACK){
1153
if(flags & IFF_LOOPBACK){
1160
1154
if(debug){
1161
fprintf(stderr, "Mandos plugin mandos-client: "
1162
"Rejecting loopback interface \"%s\"\n", ifname);
1155
fprintf(stderr, "Rejecting loopback interface \"%s\"\n",
1156
if_entry->d_name);
1163
1157
}
1164
return false;
1158
return 0;
1165
1159
}
1166
1160
/* Accept point-to-point devices only if connect_to is specified */
1167
if(connect_to != NULL and (ifr->ifr_flags & IFF_POINTOPOINT)){
1161
if(connect_to != NULL and (flags & IFF_POINTOPOINT)){
1168
1162
if(debug){
1169
fprintf(stderr, "Mandos plugin mandos-client: "
1170
"Accepting point-to-point interface \"%s\"\n", ifname);
1163
fprintf(stderr, "Accepting point-to-point interface \"%s\"\n",
1164
if_entry->d_name);
1171
1165
}
1172
return true;
1166
return 1;
1173
1167
}
1174
1168
/* Otherwise, reject non-broadcast-capable devices */
1175
if(not (ifr->ifr_flags & IFF_BROADCAST)){
1169
if(not (flags & IFF_BROADCAST)){
1176
1170
if(debug){
1177
fprintf(stderr, "Mandos plugin mandos-client: "
1178
"Rejecting non-broadcast interface \"%s\"\n", ifname);
1171
fprintf(stderr, "Rejecting non-broadcast interface \"%s\"\n",
1172
if_entry->d_name);
1179
1173
}
1180
return false;
1174
return 0;
1181
1175
}
1182
1176
/* Reject non-ARP interfaces (including dummy interfaces) */
1183
if(ifr->ifr_flags & IFF_NOARP){
1177
if(flags & IFF_NOARP){
1184
1178
if(debug){
1185
fprintf(stderr, "Mandos plugin mandos-client: "
1186
"Rejecting non-ARP interface \"%s\"\n", ifname);
1179
fprintf(stderr, "Rejecting non-ARP interface \"%s\"\n",
1180
if_entry->d_name);
1187
1181
}
1188
return false;
1182
return 0;
1189
1183
}
1190
1191
1184
/* Accept this device */
1192
1185
if(debug){
1193
fprintf(stderr, "Mandos plugin mandos-client: "
1194
"Interface \"%s\" is good\n", ifname);
1195
}
1196
return true;
1197
}
1198
1199
/*
1200
* This function determines if a directory entry in /sys/class/net
1201
* corresponds to an acceptable network device.
1202
* (This function is passed to scandir(3) as a filter function.)
1203
*/
1204
int good_interface(const struct dirent *if_entry){
1205
if(if_entry->d_name[0] == '.'){
1206
return 0;
1207
}
1208
1209
struct ifreq ifr;
1210
if(not get_flags(if_entry->d_name, &ifr)){
1211
if(debug){
1212
fprintf(stderr, "Mandos plugin mandos-client: "
1213
"Failed to get flags for interface \"%s\"\n",
1214
if_entry->d_name);
1215
}
1216
return 0;
1217
}
1218
1219
if(not good_flags(if_entry->d_name, &ifr)){
1220
return 0;
1221
}
1222
return 1;
1223
}
1224
1225
/*
1226
* This function determines if a directory entry in /sys/class/net
1227
* corresponds to an acceptable network device which is up.
1228
* (This function is passed to scandir(3) as a filter function.)
1229
*/
1230
int up_interface(const struct dirent *if_entry){
1231
if(if_entry->d_name[0] == '.'){
1232
return 0;
1233
}
1234
1235
struct ifreq ifr;
1236
if(not get_flags(if_entry->d_name, &ifr)){
1237
if(debug){
1238
fprintf(stderr, "Mandos plugin mandos-client: "
1239
"Failed to get flags for interface \"%s\"\n",
1240
if_entry->d_name);
1241
}
1242
return 0;
1243
}
1244
1245
/* Reject down interfaces */
1246
if(not (ifr.ifr_flags & IFF_UP)){
1247
if(debug){
1248
fprintf(stderr, "Mandos plugin mandos-client: "
1249
"Rejecting down interface \"%s\"\n",
1250
if_entry->d_name);
1251
}
1252
return 0;
1253
}
1254
1255
/* Reject non-running interfaces */
1256
if(not (ifr.ifr_flags & IFF_RUNNING)){
1257
if(debug){
1258
fprintf(stderr, "Mandos plugin mandos-client: "
1259
"Rejecting non-running interface \"%s\"\n",
1260
if_entry->d_name);
1261
}
1262
return 0;
1263
}
1264
1265
if(not good_flags(if_entry->d_name, &ifr)){
1266
return 0;
1186
fprintf(stderr, "Interface \"%s\" is acceptable\n",
1187
if_entry->d_name);
1267
1188
}
1268
1189
return 1;
1269
1190
}
1279
1200
return 1;
1280
1201
}
1281
1202
1282
/* Is this directory entry a runnable program? */
1283
int runnable_hook(const struct dirent *direntry){
1284
int ret;
1285
struct stat st;
1286
1287
if((direntry->d_name)[0] == '\0'){
1288
/* Empty name? */
1289
return 0;
1290
}
1291
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 */
1307
1308
char *fullname = NULL;
1309
ret = asprintf(&fullname, "%s/%s", hookdir,
1310
direntry->d_name);
1311
if(ret < 0){
1312
perror_plus("asprintf");
1313
return 0;
1314
}
1315
1316
ret = stat(fullname, &st);
1317
if(ret == -1){
1318
if(debug){
1319
perror_plus("Could not stat plugin");
1320
}
1321
return 0;
1322
}
1323
if(not (S_ISREG(st.st_mode))){
1324
/* Not a regular file */
1325
return 0;
1326
}
1327
if(not (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))){
1328
/* Not executable */
1329
return 0;
1330
}
1331
return 1;
1332
}
1333
1334
1203
int avahi_loop_with_timeout(AvahiSimplePoll *s, int retry_interval){
1335
1204
int ret;
1336
1205
struct timespec now;
1337
1206
struct timespec waited_time;
1338
1207
intmax_t block_time;
1339
1208
1340
1209
while(true){
1341
1210
if(mc.current_server == NULL){
1342
1211
if (debug){
1343
fprintf(stderr, "Mandos plugin mandos-client: "
1212
fprintf(stderr,
1344
1213
"Wait until first server is found. No timeout!\n");
1345
1214
}
1346
1215
ret = avahi_simple_poll_iterate(s, -1);
1347
1216
} else {
1348
1217
if (debug){
1349
fprintf(stderr, "Mandos plugin mandos-client: "
1350
"Check current_server if we should run it,"
1218
fprintf(stderr, "Check current_server if we should run it,"
1351
1219
" or wait\n");
1352
1220
}
1353
1221
/* the current time */
1368
1236
block_time = ((retry_interval
1369
1237
- ((intmax_t)waited_time.tv_sec * 1000))
1370
1238
- ((intmax_t)waited_time.tv_nsec / 1000000));
1371
1239
1372
1240
if (debug){
1373
fprintf(stderr, "Mandos plugin mandos-client: "
1374
"Blocking for %" PRIdMAX " ms\n", block_time);
1241
fprintf(stderr, "Blocking for %ld ms\n", block_time);
1375
1242
}
1376
1243
1377
1244
if(block_time <= 0){
1378
1245
ret = start_mandos_communication(mc.current_server->ip,
1379
1246
mc.current_server->port,
1397
1264
ret = avahi_simple_poll_iterate(s, (int)block_time);
1398
1265
}
1399
1266
if(ret != 0){
1400
if (ret > 0 or errno != EINTR){
1267
if (ret > 0 or errno != EINTR) {
1401
1268
return (ret != 1) ? ret : 0;
1402
1269
}
1403
1270
}
1491
1358
.arg = "SECONDS",
1492
1359
.doc = "Retry interval used when denied by the mandos server",
1493
1360
.group = 2 },
1494
{ .name = "network-hook-dir", .key = 133,
1495
.arg = "DIR",
1496
.doc = "Directory where network hooks are located",
1497
.group = 2 },
1498
1361
/*
1499
1362
* These reproduce what we would get without ARGP_NO_HELP
1500
1363
*/
1548
1411
errno = 0;
1549
1412
retry_interval = strtod(arg, &tmp);
1550
1413
if(errno != 0 or tmp == arg or *tmp != '\0'
1551
or (retry_interval * 1000) > INT_MAX
1552
or retry_interval < 0){
1414
or (retry_interval * 1000) > INT_MAX){
1553
1415
argp_error(state, "Bad retry interval");
1554
1416
}
1555
1417
break;
1556
case 133: /* --network-hook-dir */
1557
hookdir = arg;
1558
break;
1559
1418
/*
1560
1419
* These reproduce what we would get without ARGP_NO_HELP
1561
1420
*/
1567
1426
argp_state_help(state, state->out_stream,
1568
1427
ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);
1569
1428
case 'V': /* --version */
1570
fprintf(state->out_stream, "Mandos plugin mandos-client: ");
1571
1429
fprintf(state->out_stream, "%s\n", argp_program_version);
1572
1430
exit(argp_err_exit_status);
1573
1431
break;
1610
1468
perror_plus("seteuid");
1611
1469
}
1612
1470
1613
if(strcmp(seckey, PATHDIR "/" SECKEY) == 0){
1614
int seckey_fd = open(seckey, O_RDONLY);
1615
if(seckey_fd == -1){
1616
perror_plus("open");
1471
int seckey_fd = open(PATHDIR "/" SECKEY, O_RDONLY);
1472
if(seckey_fd == -1){
1473
perror_plus("open");
1474
} else {
1475
ret = (int)TEMP_FAILURE_RETRY(fstat(seckey_fd, &st));
1476
if(ret == -1){
1477
perror_plus("fstat");
1617
1478
} else {
1618
ret = (int)TEMP_FAILURE_RETRY(fstat(seckey_fd, &st));
1619
if(ret == -1){
1620
perror_plus("fstat");
1621
} else {
1622
if(S_ISREG(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
1623
ret = fchown(seckey_fd, uid, gid);
1624
if(ret == -1){
1625
perror_plus("fchown");
1626
}
1479
if(S_ISREG(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
1480
ret = fchown(seckey_fd, uid, gid);
1481
if(ret == -1){
1482
perror_plus("fchown");
1627
1483
}
1628
1484
}
1629
TEMP_FAILURE_RETRY(close(seckey_fd));
1630
1485
}
1486
TEMP_FAILURE_RETRY(close(seckey_fd));
1631
1487
}
1632
1488
1633
if(strcmp(pubkey, PATHDIR "/" PUBKEY) == 0){
1634
int pubkey_fd = open(pubkey, O_RDONLY);
1635
if(pubkey_fd == -1){
1636
perror_plus("open");
1489
int pubkey_fd = open(PATHDIR "/" PUBKEY, O_RDONLY);
1490
if(pubkey_fd == -1){
1491
perror_plus("open");
1492
} else {
1493
ret = (int)TEMP_FAILURE_RETRY(fstat(pubkey_fd, &st));
1494
if(ret == -1){
1495
perror_plus("fstat");
1637
1496
} else {
1638
ret = (int)TEMP_FAILURE_RETRY(fstat(pubkey_fd, &st));
1639
if(ret == -1){
1640
perror_plus("fstat");
1641
} else {
1642
if(S_ISREG(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
1643
ret = fchown(pubkey_fd, uid, gid);
1644
if(ret == -1){
1645
perror_plus("fchown");
1646
}
1497
if(S_ISREG(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
1498
ret = fchown(pubkey_fd, uid, gid);
1499
if(ret == -1){
1500
perror_plus("fchown");
1647
1501
}
1648
1502
}
1649
TEMP_FAILURE_RETRY(close(pubkey_fd));
1650
1503
}
1504
TEMP_FAILURE_RETRY(close(pubkey_fd));
1651
1505
}
1652
1506
1653
1507
/* Lower privileges */
1658
1512
}
1659
1513
}
1660
1514
1661
/* Find network hooks and run them */
1662
{
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);
1752
}
1753
}
1754
1755
1515
if(not debug){
1756
1516
avahi_set_log_function(empty_log);
1757
1517
}
1758
1518
1759
1519
if(interface[0] == '\0'){
1760
1520
struct dirent **direntries;
1761
/* First look for interfaces that are up */
1762
ret = scandir(sys_class_net, &direntries, up_interface,
1521
ret = scandir(sys_class_net, &direntries, good_interface,
1763
1522
alphasort);
1764
if(ret == 0){
1765
/* No up interfaces, look for any good interfaces */
1766
free(direntries);
1767
ret = scandir(sys_class_net, &direntries, good_interface,
1768
alphasort);
1769
}
1770
1523
if(ret >= 1){
1771
/* Pick the first interface returned */
1524
/* Pick the first good interface */
1772
1525
interface = strdup(direntries[0]->d_name);
1773
1526
if(debug){
1774
fprintf(stderr, "Mandos plugin mandos-client: "
1775
"Using interface \"%s\"\n", interface);
1527
fprintf(stderr, "Using interface \"%s\"\n", interface);
1776
1528
}
1777
1529
if(interface == NULL){
1778
1530
perror_plus("malloc");
1783
1535
free(direntries);
1784
1536
} else {
1785
1537
free(direntries);
1786
fprintf(stderr, "Mandos plugin mandos-client: "
1787
"Could not find a network interface\n");
1538
fprintf(stderr, "Could not find a network interface\n");
1788
1539
exitcode = EXIT_FAILURE;
1789
1540
goto end;
1790
1541
}
1796
1547
srand((unsigned int) time(NULL));
1797
1548
mc.simple_poll = avahi_simple_poll_new();
1798
1549
if(mc.simple_poll == NULL){
1799
fprintf(stderr, "Mandos plugin mandos-client: "
1800
"Avahi: Failed to create simple poll object.\n");
1550
fprintf(stderr, "Avahi: Failed to create simple poll object.\n");
1801
1551
exitcode = EX_UNAVAILABLE;
1802
1552
goto end;
1803
1553
}
1869
1619
if(strcmp(interface, "none") != 0){
1870
1620
if_index = (AvahiIfIndex) if_nametoindex(interface);
1871
1621
if(if_index == 0){
1872
fprintf(stderr, "Mandos plugin mandos-client: "
1873
"No such interface: \"%s\"\n", interface);
1622
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1874
1623
exitcode = EX_UNAVAILABLE;
1875
1624
goto end;
1876
1625
}
2017
1766
2018
1767
ret = init_gnutls_global(pubkey, seckey);
2019
1768
if(ret == -1){
2020
fprintf(stderr, "Mandos plugin mandos-client: "
2021
"init_gnutls_global failed\n");
1769
fprintf(stderr, "init_gnutls_global failed\n");
2022
1770
exitcode = EX_UNAVAILABLE;
2023
1771
goto end;
2024
1772
} else {
2040
1788
}
2041
1789
2042
1790
if(not init_gpgme(pubkey, seckey, tempdir)){
2043
fprintf(stderr, "Mandos plugin mandos-client: "
2044
"init_gpgme failed\n");
1791
fprintf(stderr, "init_gpgme failed\n");
2045
1792
exitcode = EX_UNAVAILABLE;
2046
1793
goto end;
2047
1794
} else {
2057
1804
/* (Mainly meant for debugging) */
2058
1805
char *address = strrchr(connect_to, ':');
2059
1806
if(address == NULL){
2060
fprintf(stderr, "Mandos plugin mandos-client: "
2061
"No colon in address\n");
1807
fprintf(stderr, "No colon in address\n");
2062
1808
exitcode = EX_USAGE;
2063
1809
goto end;
2064
1810
}
2072
1818
tmpmax = strtoimax(address+1, &tmp, 10);
2073
1819
if(errno != 0 or tmp == address+1 or *tmp != '\0'
2074
1820
or tmpmax != (uint16_t)tmpmax){
2075
fprintf(stderr, "Mandos plugin mandos-client: "
2076
"Bad port number\n");
1821
fprintf(stderr, "Bad port number\n");
2077
1822
exitcode = EX_USAGE;
2078
1823
goto end;
2079
1824
}
2084
1829
2085
1830
port = (uint16_t)tmpmax;
2086
1831
*address = '\0';
1832
address = connect_to;
2087
1833
/* Colon in address indicates IPv6 */
2088
1834
int af;
2089
if(strchr(connect_to, ':') != NULL){
1835
if(strchr(address, ':') != NULL){
2090
1836
af = AF_INET6;
2091
/* Accept [] around IPv6 address - see RFC 5952 */
2092
if(connect_to[0] == '[' and address[-1] == ']')
2093
{
2094
connect_to++;
2095
address[-1] = '\0';
2096
}
2097
1837
} else {
2098
1838
af = AF_INET;
2099
1839
}
2100
address = connect_to;
2101
1840
2102
1841
if(quit_now){
2103
1842
goto end;
2104
1843
}
2105
1844
2106
1845
while(not quit_now){
2107
1846
ret = start_mandos_communication(address, port, if_index, af);
2108
1847
if(quit_now or ret == 0){
2109
1848
break;
2110
1849
}
2111
if(debug){
2112
fprintf(stderr, "Mandos plugin mandos-client: "
2113
"Retrying in %d seconds\n", (int)retry_interval);
2114
}
2115
sleep((int)retry_interval);
2116
}
2117
1850
sleep((int)retry_interval or 1);
1851
};
1852
2118
1853
if (not quit_now){
2119
1854
exitcode = EXIT_SUCCESS;
2120
1855
}
2121
1856
2122
1857
goto end;
2123
1858
}
2124
1859
2146
1881
2147
1882
/* Check if creating the Avahi server object succeeded */
2148
1883
if(mc.server == NULL){
2149
fprintf(stderr, "Mandos plugin mandos-client: "
2150
"Failed to create Avahi server: %s\n",
1884
fprintf(stderr, "Failed to create Avahi server: %s\n",
2151
1885
avahi_strerror(error));
2152
1886
exitcode = EX_UNAVAILABLE;
2153
1887
goto end;
2162
1896
AVAHI_PROTO_UNSPEC, "_mandos._tcp",
2163
1897
NULL, 0, browse_callback, NULL);
2164
1898
if(sb == NULL){
2165
fprintf(stderr, "Mandos plugin mandos-client: "
2166
"Failed to create service browser: %s\n",
1899
fprintf(stderr, "Failed to create service browser: %s\n",
2167
1900
avahi_strerror(avahi_server_errno(mc.server)));
2168
1901
exitcode = EX_UNAVAILABLE;
2169
1902
goto end;
2176
1909
/* Run the main loop */
2177
1910
2178
1911
if(debug){
2179
fprintf(stderr, "Mandos plugin mandos-client: "
2180
"Starting Avahi loop search\n");
1912
fprintf(stderr, "Starting Avahi loop search\n");
2181
1913
}
2182
1914
2183
1915
ret = avahi_loop_with_timeout(mc.simple_poll,
2184
1916
(int)(retry_interval * 1000));
2185
1917
if(debug){
2186
fprintf(stderr, "Mandos plugin mandos-client: "
2187
"avahi_loop_with_timeout exited %s\n",
1918
fprintf(stderr, "avahi_loop_with_timeout exited %s\n",
2188
1919
(ret == 0) ? "successfully" : "with error");
2189
1920
}
2190
1921
2191
1922
end:
2192
1923
2193
1924
if(debug){
2194
fprintf(stderr, "Mandos plugin mandos-client: "
2195
"%s exiting\n", argv[0]);
1925
fprintf(stderr, "%s exiting\n", argv[0]);
2196
1926
}
2197
1927
2198
1928
/* Cleanup things */
2226
1956
}
2227
1957
}
2228
1958
2229
/* XXX run network hooks "stop" here */
2230
2231
1959
/* Take down the network interface */
2232
1960
if(take_down_interface){
2233
1961
/* Re-raise priviliges */
2240
1968
ret = ioctl(sd, SIOCGIFFLAGS, &network);
2241
1969
if(ret == -1){
2242
1970
perror_plus("ioctl SIOCGIFFLAGS");
2243
} else if(network.ifr_flags & IFF_UP){
1971
} else if(network.ifr_flags & IFF_UP) {
2244
1972
network.ifr_flags &= ~(short)IFF_UP; /* clear flag */
2245
1973
ret = ioctl(sd, SIOCSIFFLAGS, &network);
2246
1974
if(ret == -1){
2264
1992
if(tempdir_created){
2265
1993
struct dirent **direntries = NULL;
2266
1994
struct dirent *direntry = NULL;
2267
int numentries = scandir(tempdir, &direntries, notdotentries,
2268
alphasort);
2269
if (numentries > 0){
2270
for(int i = 0; i < numentries; i++){
1995
ret = scandir(tempdir, &direntries, notdotentries, alphasort);
1996
if (ret > 0){
1997
for(int i = 0; i < ret; i++){
2271
1998
direntry = direntries[i];
2272
1999
char *fullname = NULL;
2273
2000
ret = asprintf(&fullname, "%s/%s", tempdir,
2278
2005
}
2279
2006
ret = remove(fullname);
2280
2007
if(ret == -1){
2281
fprintf(stderr, "Mandos plugin mandos-client: "
2282
"remove(\"%s\"): %s\n", fullname, strerror(errno));
2008
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
2009
strerror(errno));
2283
2010
}
2284
2011
free(fullname);
2285
2012
}
2286
2013
}
2287
2014
2288
/* need to clean even if 0 because man page doesn't specify */
2015
/* need to be cleaned even if ret == 0 because man page doesn't
2016
specify */
2289
2017
free(direntries);
2290
if (numentries == -1){
2018
if (ret == -1){
2291
2019
perror_plus("scandir");
2292
2020
}
2293
2021
ret = rmdir(tempdir);
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0