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- Committer: Teddy Hogeborn
- Date: 2011-07-16 00:29:19 UTC
- Revision ID: teddy@fukt.bsnet.se-20110716002919-r77yikuiulj42o40
* initramfs-tools-script: Abort if plugin-runner is missing. Removed
workaround for Debian bug #633582; the
workaround required getopt, which can not be
guaranteed.
* plugin-runner.c (main): Work around Debian bug #633582.
* plugins.d/mandos-client.c (main): - '' -
workaround for Debian bug #633582; the
workaround required getopt, which can not be
guaranteed.
* plugin-runner.c (main): Work around Debian bug #633582.
* plugins.d/mandos-client.c (main): - '' -
- 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() */
110
108
init_gnutls_session(),
111
109
GNUTLS_* */
112
110
#include <gnutls/openpgp.h>
113
/* gnutls_certificate_set_openpgp_key_file(),
114
GNUTLS_OPENPGP_FMT_BASE64 */
111
/* gnutls_certificate_set_openpgp_key_file(),
112
GNUTLS_OPENPGP_FMT_BASE64 */
115
113
116
114
/* GPGME */
117
115
#include <gpgme.h> /* All GPGME types, constants and
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{
174
170
perror(print_text);
175
171
}
176
172
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: ", program_invocation_short_name));
182
return TEMP_FAILURE_RETRY(vfprintf(stream, format, ap));
183
}
184
185
173
/*
186
174
* Make additional room in "buffer" for at least BUFFER_SIZE more
187
175
* bytes. "buffer_capacity" is how much is currently allocated,
188
176
* "buffer_length" is how much is already used.
189
177
*/
190
178
size_t incbuffer(char **buffer, size_t buffer_length,
191
size_t buffer_capacity){
179
size_t buffer_capacity){
192
180
if(buffer_length + BUFFER_SIZE > buffer_capacity){
193
181
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
194
182
if(buffer == NULL){
199
187
return buffer_capacity;
200
188
}
201
189
202
/* Add server to set of servers to retry periodically */
203
int add_server(const char *ip, uint16_t port, AvahiIfIndex if_index,
204
int af){
190
int add_server(const char *ip, uint16_t port,
191
AvahiIfIndex if_index,
192
int af){
205
193
int ret;
206
194
server *new_server = malloc(sizeof(server));
207
195
if(new_server == NULL){
209
197
return -1;
210
198
}
211
199
*new_server = (server){ .ip = strdup(ip),
212
.port = port,
213
.if_index = if_index,
214
.af = af };
200
.port = port,
201
.if_index = if_index,
202
.af = af };
215
203
if(new_server->ip == NULL){
216
204
perror_plus("strdup");
217
205
return -1;
218
206
}
219
/* Special case of first server */
207
/* unique case of first server */
220
208
if (mc.current_server == NULL){
221
209
new_server->next = new_server;
222
210
new_server->prev = new_server;
223
211
mc.current_server = new_server;
224
/* Place the new server last in the list */
212
/* Placing the new server last in the list */
225
213
} else {
226
214
new_server->next = mc.current_server;
227
215
new_server->prev = mc.current_server->prev;
239
227
/*
240
228
* Initialize GPGME.
241
229
*/
242
static bool init_gpgme(const char *seckey, const char *pubkey,
243
const char *tempdir){
230
static bool init_gpgme(const char *seckey,
231
const char *pubkey, const char *tempdir){
244
232
gpgme_error_t rc;
245
233
gpgme_engine_info_t engine_info;
246
234
261
249
262
250
rc = gpgme_data_new_from_fd(&pgp_data, fd);
263
251
if(rc != GPG_ERR_NO_ERROR){
264
fprintf_plus(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
252
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
265
253
gpgme_strsource(rc), gpgme_strerror(rc));
266
254
return false;
267
255
}
268
256
269
257
rc = gpgme_op_import(mc.ctx, pgp_data);
270
258
if(rc != GPG_ERR_NO_ERROR){
271
fprintf_plus(stderr, "bad gpgme_op_import: %s: %s\n",
259
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
272
260
gpgme_strsource(rc), gpgme_strerror(rc));
273
261
return false;
274
262
}
282
270
}
283
271
284
272
if(debug){
285
fprintf_plus(stderr, "Initializing GPGME\n");
273
fprintf(stderr, "Initializing GPGME\n");
286
274
}
287
275
288
276
/* Init GPGME */
289
277
gpgme_check_version(NULL);
290
278
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
291
279
if(rc != GPG_ERR_NO_ERROR){
292
fprintf_plus(stderr, "bad gpgme_engine_check_version: %s: %s\n",
280
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
293
281
gpgme_strsource(rc), gpgme_strerror(rc));
294
282
return false;
295
283
}
296
284
297
/* Set GPGME home directory for the OpenPGP engine only */
285
/* Set GPGME home directory for the OpenPGP engine only */
298
286
rc = gpgme_get_engine_info(&engine_info);
299
287
if(rc != GPG_ERR_NO_ERROR){
300
fprintf_plus(stderr, "bad gpgme_get_engine_info: %s: %s\n",
288
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
301
289
gpgme_strsource(rc), gpgme_strerror(rc));
302
290
return false;
303
291
}
310
298
engine_info = engine_info->next;
311
299
}
312
300
if(engine_info == NULL){
313
fprintf_plus(stderr, "Could not set GPGME home dir to %s\n", tempdir);
301
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
314
302
return false;
315
303
}
316
304
317
305
/* Create new GPGME "context" */
318
306
rc = gpgme_new(&(mc.ctx));
319
307
if(rc != GPG_ERR_NO_ERROR){
320
fprintf_plus(stderr, "Mandos plugin mandos-client: "
321
"bad gpgme_new: %s: %s\n", gpgme_strsource(rc),
322
gpgme_strerror(rc));
308
fprintf(stderr, "bad gpgme_new: %s: %s\n",
309
gpgme_strsource(rc), gpgme_strerror(rc));
323
310
return false;
324
311
}
325
312
344
331
ssize_t plaintext_length = 0;
345
332
346
333
if(debug){
347
fprintf_plus(stderr, "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_plus(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
341
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
355
342
gpgme_strsource(rc), gpgme_strerror(rc));
356
343
return -1;
357
344
}
359
346
/* Create new empty GPGME data buffer for the plaintext */
360
347
rc = gpgme_data_new(&dh_plain);
361
348
if(rc != GPG_ERR_NO_ERROR){
362
fprintf_plus(stderr, "Mandos plugin mandos-client: "
363
"bad gpgme_data_new: %s: %s\n",
349
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
364
350
gpgme_strsource(rc), gpgme_strerror(rc));
365
351
gpgme_data_release(dh_crypto);
366
352
return -1;
370
356
data buffer */
371
357
rc = gpgme_op_decrypt(mc.ctx, dh_crypto, dh_plain);
372
358
if(rc != GPG_ERR_NO_ERROR){
373
fprintf_plus(stderr, "bad gpgme_op_decrypt: %s: %s\n",
359
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
374
360
gpgme_strsource(rc), gpgme_strerror(rc));
375
361
plaintext_length = -1;
376
362
if(debug){
377
363
gpgme_decrypt_result_t result;
378
364
result = gpgme_op_decrypt_result(mc.ctx);
379
365
if(result == NULL){
380
fprintf_plus(stderr, "gpgme_op_decrypt_result failed\n");
366
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
381
367
} else {
382
fprintf_plus(stderr, "Unsupported algorithm: %s\n",
368
fprintf(stderr, "Unsupported algorithm: %s\n",
383
369
result->unsupported_algorithm);
384
fprintf_plus(stderr, "Wrong key usage: %u\n",
370
fprintf(stderr, "Wrong key usage: %u\n",
385
371
result->wrong_key_usage);
386
372
if(result->file_name != NULL){
387
fprintf_plus(stderr, "File name: %s\n", result->file_name);
373
fprintf(stderr, "File name: %s\n", result->file_name);
388
374
}
389
375
gpgme_recipient_t recipient;
390
376
recipient = result->recipients;
391
377
while(recipient != NULL){
392
fprintf_plus(stderr, "Public key algorithm: %s\n",
378
fprintf(stderr, "Public key algorithm: %s\n",
393
379
gpgme_pubkey_algo_name(recipient->pubkey_algo));
394
fprintf_plus(stderr, "Key ID: %s\n", recipient->keyid);
395
fprintf_plus(stderr, "Secret key available: %s\n",
380
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
381
fprintf(stderr, "Secret key available: %s\n",
396
382
recipient->status == GPG_ERR_NO_SECKEY
397
383
? "No" : "Yes");
398
384
recipient = recipient->next;
403
389
}
404
390
405
391
if(debug){
406
fprintf_plus(stderr, "Decryption of OpenPGP data succeeded\n");
392
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
407
393
}
408
394
409
395
/* Seek back to the beginning of the GPGME plaintext data buffer */
416
402
*plaintext = NULL;
417
403
while(true){
418
404
plaintext_capacity = incbuffer(plaintext,
419
(size_t)plaintext_length,
420
plaintext_capacity);
405
(size_t)plaintext_length,
406
plaintext_capacity);
421
407
if(plaintext_capacity == 0){
422
perror_plus("incbuffer");
423
plaintext_length = -1;
424
goto decrypt_end;
408
perror_plus("incbuffer");
409
plaintext_length = -1;
410
goto decrypt_end;
425
411
}
426
412
427
413
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
440
426
}
441
427
442
428
if(debug){
443
fprintf_plus(stderr, "Decrypted password is: ");
429
fprintf(stderr, "Decrypted password is: ");
444
430
for(ssize_t i = 0; i < plaintext_length; i++){
445
431
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
446
432
}
468
454
/* GnuTLS log function callback */
469
455
static void debuggnutls(__attribute__((unused)) int level,
470
456
const char* string){
471
fprintf_plus(stderr, "GnuTLS: %s", string);
457
fprintf(stderr, "GnuTLS: %s", string);
472
458
}
473
459
474
460
static int init_gnutls_global(const char *pubkeyfilename,
476
462
int ret;
477
463
478
464
if(debug){
479
fprintf_plus(stderr, "Initializing GnuTLS\n");
465
fprintf(stderr, "Initializing GnuTLS\n");
480
466
}
481
467
482
468
ret = gnutls_global_init();
483
469
if(ret != GNUTLS_E_SUCCESS){
484
fprintf_plus(stderr, "GnuTLS global_init: %s\n", safer_gnutls_strerror(ret));
470
fprintf(stderr, "GnuTLS global_init: %s\n",
471
safer_gnutls_strerror(ret));
485
472
return -1;
486
473
}
487
474
496
483
/* OpenPGP credentials */
497
484
ret = gnutls_certificate_allocate_credentials(&mc.cred);
498
485
if(ret != GNUTLS_E_SUCCESS){
499
fprintf_plus(stderr, "GnuTLS memory error: %s\n", safer_gnutls_strerror(ret));
486
fprintf(stderr, "GnuTLS memory error: %s\n",
487
safer_gnutls_strerror(ret));
500
488
gnutls_global_deinit();
501
489
return -1;
502
490
}
503
491
504
492
if(debug){
505
fprintf_plus(stderr, "Attempting to use OpenPGP public key %s and"
493
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
506
494
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
507
495
seckeyfilename);
508
496
}
511
499
(mc.cred, pubkeyfilename, seckeyfilename,
512
500
GNUTLS_OPENPGP_FMT_BASE64);
513
501
if(ret != GNUTLS_E_SUCCESS){
514
fprintf_plus(stderr,
515
"Error[%d] while reading the OpenPGP key pair ('%s',"
516
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
517
fprintf_plus(stderr, "The GnuTLS error is: %s\n", safer_gnutls_strerror(ret));
502
fprintf(stderr,
503
"Error[%d] while reading the OpenPGP key pair ('%s',"
504
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
505
fprintf(stderr, "The GnuTLS error is: %s\n",
506
safer_gnutls_strerror(ret));
518
507
goto globalfail;
519
508
}
520
509
521
510
/* GnuTLS server initialization */
522
511
ret = gnutls_dh_params_init(&mc.dh_params);
523
512
if(ret != GNUTLS_E_SUCCESS){
524
fprintf_plus(stderr, "Error in GnuTLS DH parameter initialization:"
513
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
525
514
" %s\n", safer_gnutls_strerror(ret));
526
515
goto globalfail;
527
516
}
528
517
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
529
518
if(ret != GNUTLS_E_SUCCESS){
530
fprintf_plus(stderr, "Error in GnuTLS prime generation: %s\n",
519
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
531
520
safer_gnutls_strerror(ret));
532
521
goto globalfail;
533
522
}
554
543
}
555
544
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
556
545
if(ret != GNUTLS_E_SUCCESS){
557
fprintf_plus(stderr, "Error in GnuTLS session initialization: %s\n",
546
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
558
547
safer_gnutls_strerror(ret));
559
548
}
560
549
568
557
}
569
558
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
570
559
if(ret != GNUTLS_E_SUCCESS){
571
fprintf_plus(stderr, "Syntax error at: %s\n", err);
572
fprintf_plus(stderr, "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));
573
563
gnutls_deinit(*session);
574
564
return -1;
575
565
}
584
574
}
585
575
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
586
576
if(ret != GNUTLS_E_SUCCESS){
587
fprintf_plus(stderr, "Error setting GnuTLS credentials: %s\n",
577
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
588
578
safer_gnutls_strerror(ret));
589
579
gnutls_deinit(*session);
590
580
return -1;
636
626
pf = PF_INET;
637
627
break;
638
628
default:
639
fprintf_plus(stderr, "Bad address family: %d\n", af);
629
fprintf(stderr, "Bad address family: %d\n", af);
640
630
errno = EINVAL;
641
631
return -1;
642
632
}
647
637
}
648
638
649
639
if(debug){
650
fprintf_plus(stderr, "Setting up a TCP connection to %s, port %" PRIu16
640
fprintf(stderr, "Setting up a TCP connection to %s, port %" PRIu16
651
641
"\n", ip, port);
652
642
}
653
643
680
670
}
681
671
if(ret == 0){
682
672
int e = errno;
683
fprintf_plus(stderr, "Bad address: %s\n", ip);
673
fprintf(stderr, "Bad address: %s\n", ip);
684
674
errno = e;
685
675
goto mandos_end;
686
676
}
691
681
692
682
if(IN6_IS_ADDR_LINKLOCAL /* Spurious warnings from */
693
683
(&to.in6.sin6_addr)){ /* -Wstrict-aliasing=2 or lower and
694
-Wunreachable-code*/
684
-Wunreachable-code*/
695
685
if(if_index == AVAHI_IF_UNSPEC){
696
fprintf_plus(stderr, "An IPv6 link-local address is incomplete"
686
fprintf(stderr, "An IPv6 link-local address is incomplete"
697
687
" without a network interface\n");
698
688
errno = EINVAL;
699
689
goto mandos_end;
718
708
if(if_indextoname((unsigned int)if_index, interface) == NULL){
719
709
perror_plus("if_indextoname");
720
710
} else {
721
fprintf_plus(stderr, "Connection to: %s%%%s, port %" PRIu16 "\n",
711
fprintf(stderr, "Connection to: %s%%%s, port %" PRIu16 "\n",
722
712
ip, interface, port);
723
713
}
724
714
} else {
725
fprintf_plus(stderr, "Connection to: %s, port %" PRIu16 "\n", ip, port);
715
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
716
port);
726
717
}
727
718
char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
728
719
INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
738
729
perror_plus("inet_ntop");
739
730
} else {
740
731
if(strcmp(addrstr, ip) != 0){
741
fprintf_plus(stderr, "Canonical address form: %s\n", addrstr);
732
fprintf(stderr, "Canonical address form: %s\n", addrstr);
742
733
}
743
734
}
744
735
}
772
763
while(true){
773
764
size_t out_size = strlen(out);
774
765
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
775
out_size - written));
766
out_size - written));
776
767
if(ret == -1){
777
768
int e = errno;
778
769
perror_plus("write");
798
789
}
799
790
800
791
if(debug){
801
fprintf_plus(stderr, "Establishing TLS session with %s\n", ip);
792
fprintf(stderr, "Establishing TLS session with %s\n", ip);
802
793
}
803
794
804
795
if(quit_now){
824
815
825
816
if(ret != GNUTLS_E_SUCCESS){
826
817
if(debug){
827
fprintf_plus(stderr, "*** GnuTLS Handshake failed ***\n");
818
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
828
819
gnutls_perror(ret);
829
820
}
830
821
errno = EPROTO;
834
825
/* Read OpenPGP packet that contains the wanted password */
835
826
836
827
if(debug){
837
fprintf_plus(stderr, "Retrieving OpenPGP encrypted password from %s\n", ip);
828
fprintf(stderr, "Retrieving OpenPGP encrypted password from %s\n",
829
ip);
838
830
}
839
831
840
832
while(true){
845
837
}
846
838
847
839
buffer_capacity = incbuffer(&buffer, buffer_length,
848
buffer_capacity);
840
buffer_capacity);
849
841
if(buffer_capacity == 0){
850
842
int e = errno;
851
843
perror_plus("incbuffer");
878
870
}
879
871
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
880
872
if(ret < 0){
881
fprintf_plus(stderr, "*** GnuTLS Re-handshake failed ***\n");
873
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
882
874
gnutls_perror(ret);
883
875
errno = EPROTO;
884
876
goto mandos_end;
885
877
}
886
878
break;
887
879
default:
888
fprintf_plus(stderr, "Unknown error while reading data from"
880
fprintf(stderr, "Unknown error while reading data from"
889
881
" encrypted session with Mandos server\n");
890
882
gnutls_bye(session, GNUTLS_SHUT_RDWR);
891
883
errno = EIO;
897
889
}
898
890
899
891
if(debug){
900
fprintf_plus(stderr, "Closing TLS session\n");
892
fprintf(stderr, "Closing TLS session\n");
901
893
}
902
894
903
895
if(quit_now){
915
907
916
908
if(buffer_length > 0){
917
909
ssize_t decrypted_buffer_size;
918
decrypted_buffer_size = pgp_packet_decrypt(buffer, buffer_length,
910
decrypted_buffer_size = pgp_packet_decrypt(buffer,
911
buffer_length,
919
912
&decrypted_buffer);
920
913
if(decrypted_buffer_size >= 0){
921
914
932
925
if(ret == 0 and ferror(stdout)){
933
926
int e = errno;
934
927
if(debug){
935
fprintf_plus(stderr, "Error writing encrypted data: %s\n",
928
fprintf(stderr, "Error writing encrypted data: %s\n",
936
929
strerror(errno));
937
930
}
938
931
errno = e;
996
989
switch(event){
997
990
default:
998
991
case AVAHI_RESOLVER_FAILURE:
999
fprintf_plus(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
992
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
1000
993
" of type '%s' in domain '%s': %s\n", name, type, domain,
1001
994
avahi_strerror(avahi_server_errno(mc.server)));
1002
995
break;
1006
999
char ip[AVAHI_ADDRESS_STR_MAX];
1007
1000
avahi_address_snprint(ip, sizeof(ip), address);
1008
1001
if(debug){
1009
fprintf_plus(stderr, "Mandos server \"%s\" found on %s (%s, %"
1002
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
1010
1003
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
1011
1004
ip, (intmax_t)interface, port);
1012
1005
}
1046
1039
default:
1047
1040
case AVAHI_BROWSER_FAILURE:
1048
1041
1049
fprintf_plus(stderr, "(Avahi browser) %s\n",
1042
fprintf(stderr, "(Avahi browser) %s\n",
1050
1043
avahi_strerror(avahi_server_errno(mc.server)));
1051
1044
avahi_simple_poll_quit(mc.simple_poll);
1052
1045
return;
1060
1053
if(avahi_s_service_resolver_new(mc.server, interface, protocol,
1061
1054
name, type, domain, protocol, 0,
1062
1055
resolve_callback, NULL) == NULL)
1063
fprintf_plus(stderr, "Avahi: Failed to resolve service '%s': %s\n",
1056
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
1064
1057
name, avahi_strerror(avahi_server_errno(mc.server)));
1065
1058
break;
1066
1059
1070
1063
case AVAHI_BROWSER_ALL_FOR_NOW:
1071
1064
case AVAHI_BROWSER_CACHE_EXHAUSTED:
1072
1065
if(debug){
1073
fprintf_plus(stderr, "No Mandos server found, still searching...\n");
1066
fprintf(stderr, "No Mandos server found, still searching...\n");
1074
1067
}
1075
1068
break;
1076
1069
}
1091
1084
errno = old_errno;
1092
1085
}
1093
1086
1094
bool get_flags(const char *ifname, struct ifreq *ifr){
1095
int ret;
1096
1097
int s = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1098
if(s < 0){
1099
perror_plus("socket");
1100
return false;
1101
}
1102
strcpy(ifr->ifr_name, ifname);
1103
ret = ioctl(s, SIOCGIFFLAGS, ifr);
1104
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){
1105
1143
if(debug){
1106
perror_plus("ioctl SIOCGIFFLAGS");
1144
fprintf(stderr, "Invalid flags \"%s\" for interface \"%s\"\n",
1145
flagstring, if_entry->d_name);
1107
1146
}
1108
return false;
1147
free(flagstring);
1148
return 0;
1109
1149
}
1110
return true;
1111
}
1112
1113
bool good_flags(const char *ifname, const struct ifreq *ifr){
1114
1150
free(flagstring);
1151
ifreq_flags flags = (ifreq_flags)tmpmax;
1115
1152
/* Reject the loopback device */
1116
if(ifr->ifr_flags & IFF_LOOPBACK){
1153
if(flags & IFF_LOOPBACK){
1117
1154
if(debug){
1118
fprintf_plus(stderr, "Rejecting loopback interface \"%s\"\n", ifname);
1155
fprintf(stderr, "Rejecting loopback interface \"%s\"\n",
1156
if_entry->d_name);
1119
1157
}
1120
return false;
1158
return 0;
1121
1159
}
1122
1160
/* Accept point-to-point devices only if connect_to is specified */
1123
if(connect_to != NULL and (ifr->ifr_flags & IFF_POINTOPOINT)){
1161
if(connect_to != NULL and (flags & IFF_POINTOPOINT)){
1124
1162
if(debug){
1125
fprintf_plus(stderr, "Accepting point-to-point interface \"%s\"\n", ifname);
1163
fprintf(stderr, "Accepting point-to-point interface \"%s\"\n",
1164
if_entry->d_name);
1126
1165
}
1127
return true;
1166
return 1;
1128
1167
}
1129
1168
/* Otherwise, reject non-broadcast-capable devices */
1130
if(not (ifr->ifr_flags & IFF_BROADCAST)){
1169
if(not (flags & IFF_BROADCAST)){
1131
1170
if(debug){
1132
fprintf_plus(stderr, "Rejecting non-broadcast interface \"%s\"\n", ifname);
1171
fprintf(stderr, "Rejecting non-broadcast interface \"%s\"\n",
1172
if_entry->d_name);
1133
1173
}
1134
return false;
1174
return 0;
1135
1175
}
1136
1176
/* Reject non-ARP interfaces (including dummy interfaces) */
1137
if(ifr->ifr_flags & IFF_NOARP){
1177
if(flags & IFF_NOARP){
1138
1178
if(debug){
1139
fprintf_plus(stderr, "Rejecting non-ARP interface \"%s\"\n", ifname);
1179
fprintf(stderr, "Rejecting non-ARP interface \"%s\"\n",
1180
if_entry->d_name);
1140
1181
}
1141
return false;
1182
return 0;
1142
1183
}
1143
1144
1184
/* Accept this device */
1145
1185
if(debug){
1146
fprintf_plus(stderr, "Interface \"%s\" is good\n", ifname);
1147
}
1148
return true;
1149
}
1150
1151
/*
1152
* This function determines if a directory entry in /sys/class/net
1153
* corresponds to an acceptable network device.
1154
* (This function is passed to scandir(3) as a filter function.)
1155
*/
1156
int good_interface(const struct dirent *if_entry){
1157
if(if_entry->d_name[0] == '.'){
1158
return 0;
1159
}
1160
1161
struct ifreq ifr;
1162
if(not get_flags(if_entry->d_name, &ifr)){
1163
if(debug){
1164
fprintf_plus(stderr, "Failed to get flags for interface \"%s\"\n",
1165
if_entry->d_name);
1166
}
1167
return 0;
1168
}
1169
1170
if(not good_flags(if_entry->d_name, &ifr)){
1171
return 0;
1172
}
1173
return 1;
1174
}
1175
1176
/*
1177
* This function determines if a directory entry in /sys/class/net
1178
* corresponds to an acceptable network device which is up.
1179
* (This function is passed to scandir(3) as a filter function.)
1180
*/
1181
int up_interface(const struct dirent *if_entry){
1182
if(if_entry->d_name[0] == '.'){
1183
return 0;
1184
}
1185
1186
struct ifreq ifr;
1187
if(not get_flags(if_entry->d_name, &ifr)){
1188
if(debug){
1189
fprintf_plus(stderr, "Failed to get flags for interface \"%s\"\n",
1190
if_entry->d_name);
1191
}
1192
return 0;
1193
}
1194
1195
/* Reject down interfaces */
1196
if(not (ifr.ifr_flags & IFF_UP)){
1197
if(debug){
1198
fprintf_plus(stderr, "Rejecting down interface \"%s\"\n",
1199
if_entry->d_name);
1200
}
1201
return 0;
1202
}
1203
1204
/* Reject non-running interfaces */
1205
if(not (ifr.ifr_flags & IFF_RUNNING)){
1206
if(debug){
1207
fprintf_plus(stderr, "Rejecting non-running interface \"%s\"\n",
1208
if_entry->d_name);
1209
}
1210
return 0;
1211
}
1212
1213
if(not good_flags(if_entry->d_name, &ifr)){
1214
return 0;
1186
fprintf(stderr, "Interface \"%s\" is acceptable\n",
1187
if_entry->d_name);
1215
1188
}
1216
1189
return 1;
1217
1190
}
1227
1200
return 1;
1228
1201
}
1229
1202
1230
/* Is this directory entry a runnable program? */
1231
int runnable_hook(const struct dirent *direntry){
1232
int ret;
1233
size_t sret;
1234
struct stat st;
1235
1236
if((direntry->d_name)[0] == '\0'){
1237
/* Empty name? */
1238
return 0;
1239
}
1240
1241
sret = strspn(direntry->d_name, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1242
"abcdefghijklmnopqrstuvwxyz"
1243
"0123456789"
1244
"_-");
1245
if((direntry->d_name)[sret] != '\0'){
1246
/* Contains non-allowed characters */
1247
if(debug){
1248
fprintf_plus(stderr, "Ignoring hook \"%s\" with bad name\n",
1249
direntry->d_name);
1250
}
1251
return 0;
1252
}
1253
1254
char *fullname = NULL;
1255
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1256
if(ret < 0){
1257
perror_plus("asprintf");
1258
return 0;
1259
}
1260
1261
ret = stat(fullname, &st);
1262
if(ret == -1){
1263
if(debug){
1264
perror_plus("Could not stat hook");
1265
}
1266
return 0;
1267
}
1268
if(not (S_ISREG(st.st_mode))){
1269
/* Not a regular file */
1270
if(debug){
1271
fprintf_plus(stderr, "Ignoring hook \"%s\" - not a file\n",
1272
direntry->d_name);
1273
}
1274
return 0;
1275
}
1276
if(not (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))){
1277
/* Not executable */
1278
if(debug){
1279
fprintf_plus(stderr, "Ignoring hook \"%s\" - not executable\n",
1280
direntry->d_name);
1281
}
1282
return 0;
1283
}
1284
return 1;
1285
}
1286
1287
1203
int avahi_loop_with_timeout(AvahiSimplePoll *s, int retry_interval){
1288
1204
int ret;
1289
1205
struct timespec now;
1290
1206
struct timespec waited_time;
1291
1207
intmax_t block_time;
1292
1208
1293
1209
while(true){
1294
1210
if(mc.current_server == NULL){
1295
1211
if (debug){
1296
fprintf_plus(stderr, "Wait until first server is found. No timeout!\n");
1212
fprintf(stderr,
1213
"Wait until first server is found. No timeout!\n");
1297
1214
}
1298
1215
ret = avahi_simple_poll_iterate(s, -1);
1299
1216
} else {
1300
1217
if (debug){
1301
fprintf_plus(stderr, "Check current_server if we should run it,"
1218
fprintf(stderr, "Check current_server if we should run it,"
1302
1219
" or wait\n");
1303
1220
}
1304
1221
/* the current time */
1319
1236
block_time = ((retry_interval
1320
1237
- ((intmax_t)waited_time.tv_sec * 1000))
1321
1238
- ((intmax_t)waited_time.tv_nsec / 1000000));
1322
1239
1323
1240
if (debug){
1324
fprintf_plus(stderr, "Blocking for %" PRIdMAX " ms\n", block_time);
1241
fprintf(stderr, "Blocking for %ld ms\n", block_time);
1325
1242
}
1326
1243
1327
1244
if(block_time <= 0){
1328
1245
ret = start_mandos_communication(mc.current_server->ip,
1329
1246
mc.current_server->port,
1347
1264
ret = avahi_simple_poll_iterate(s, (int)block_time);
1348
1265
}
1349
1266
if(ret != 0){
1350
if (ret > 0 or errno != EINTR){
1267
if (ret > 0 or errno != EINTR) {
1351
1268
return (ret != 1) ? ret : 0;
1352
1269
}
1353
1270
}
1441
1358
.arg = "SECONDS",
1442
1359
.doc = "Retry interval used when denied by the mandos server",
1443
1360
.group = 2 },
1444
{ .name = "network-hook-dir", .key = 133,
1445
.arg = "DIR",
1446
.doc = "Directory where network hooks are located",
1447
.group = 2 },
1448
1361
/*
1449
1362
* These reproduce what we would get without ARGP_NO_HELP
1450
1363
*/
1498
1411
errno = 0;
1499
1412
retry_interval = strtod(arg, &tmp);
1500
1413
if(errno != 0 or tmp == arg or *tmp != '\0'
1501
or (retry_interval * 1000) > INT_MAX
1502
or retry_interval < 0){
1414
or (retry_interval * 1000) > INT_MAX){
1503
1415
argp_error(state, "Bad retry interval");
1504
1416
}
1505
1417
break;
1506
case 133: /* --network-hook-dir */
1507
hookdir = arg;
1508
break;
1509
1418
/*
1510
1419
* These reproduce what we would get without ARGP_NO_HELP
1511
1420
*/
1517
1426
argp_state_help(state, state->out_stream,
1518
1427
ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);
1519
1428
case 'V': /* --version */
1520
fprintf_plus(state->out_stream, "Mandos plugin mandos-client: ");
1521
fprintf_plus(state->out_stream, "%s\n", argp_program_version);
1429
fprintf(state->out_stream, "%s\n", argp_program_version);
1522
1430
exit(argp_err_exit_status);
1523
1431
break;
1524
1432
default:
1560
1468
perror_plus("seteuid");
1561
1469
}
1562
1470
1563
if(strcmp(seckey, PATHDIR "/" SECKEY) == 0){
1564
int seckey_fd = open(seckey, O_RDONLY);
1565
if(seckey_fd == -1){
1566
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");
1567
1478
} else {
1568
ret = (int)TEMP_FAILURE_RETRY(fstat(seckey_fd, &st));
1569
if(ret == -1){
1570
perror_plus("fstat");
1571
} else {
1572
if(S_ISREG(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
1573
ret = fchown(seckey_fd, uid, gid);
1574
if(ret == -1){
1575
perror_plus("fchown");
1576
}
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");
1577
1483
}
1578
1484
}
1579
TEMP_FAILURE_RETRY(close(seckey_fd));
1580
1485
}
1486
TEMP_FAILURE_RETRY(close(seckey_fd));
1581
1487
}
1582
1488
1583
if(strcmp(pubkey, PATHDIR "/" PUBKEY) == 0){
1584
int pubkey_fd = open(pubkey, O_RDONLY);
1585
if(pubkey_fd == -1){
1586
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");
1587
1496
} else {
1588
ret = (int)TEMP_FAILURE_RETRY(fstat(pubkey_fd, &st));
1589
if(ret == -1){
1590
perror_plus("fstat");
1591
} else {
1592
if(S_ISREG(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
1593
ret = fchown(pubkey_fd, uid, gid);
1594
if(ret == -1){
1595
perror_plus("fchown");
1596
}
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");
1597
1501
}
1598
1502
}
1599
TEMP_FAILURE_RETRY(close(pubkey_fd));
1600
1503
}
1504
TEMP_FAILURE_RETRY(close(pubkey_fd));
1601
1505
}
1602
1506
1603
1507
/* Lower privileges */
1608
1512
}
1609
1513
}
1610
1514
1611
/* Find network hooks and run them */
1612
{
1613
struct dirent **direntries;
1614
struct dirent *direntry;
1615
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1616
alphasort);
1617
if(numhooks == -1){
1618
perror_plus("scandir");
1619
} else {
1620
int devnull = open("/dev/null", O_RDONLY);
1621
for(int i = 0; i < numhooks; i++){
1622
direntry = direntries[0];
1623
char *fullname = NULL;
1624
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1625
if(ret < 0){
1626
perror_plus("asprintf");
1627
continue;
1628
}
1629
pid_t hook_pid = fork();
1630
if(hook_pid == 0){
1631
/* Child */
1632
dup2(devnull, STDIN_FILENO);
1633
close(devnull);
1634
dup2(STDERR_FILENO, STDOUT_FILENO);
1635
ret = setenv("MANDOSNETHOOKDIR", hookdir, 1);
1636
if(ret == -1){
1637
perror_plus("setenv");
1638
exit(1);
1639
}
1640
ret = setenv("DEVICE", interface, 1);
1641
if(ret == -1){
1642
perror_plus("setenv");
1643
exit(1);
1644
}
1645
ret = setenv("VERBOSE", debug ? "1" : "0", 1);
1646
if(ret == -1){
1647
perror_plus("setenv");
1648
exit(1);
1649
}
1650
ret = setenv("MODE", "start", 1);
1651
if(ret == -1){
1652
perror_plus("setenv");
1653
exit(1);
1654
}
1655
char *delaystring;
1656
ret = asprintf(&delaystring, "%f", delay);
1657
if(ret == -1){
1658
perror_plus("asprintf");
1659
exit(1);
1660
}
1661
ret = setenv("DELAY", delaystring, 1);
1662
if(ret == -1){
1663
free(delaystring);
1664
perror_plus("setenv");
1665
exit(1);
1666
}
1667
free(delaystring);
1668
ret = execl(fullname, direntry->d_name, "start", NULL);
1669
perror_plus("execl");
1670
} else {
1671
int status;
1672
if(TEMP_FAILURE_RETRY(waitpid(hook_pid, &status, 0)) == -1){
1673
perror_plus("waitpid");
1674
free(fullname);
1675
continue;
1676
}
1677
if(WIFEXITED(status)){
1678
if(WEXITSTATUS(status) != 0){
1679
fprintf_plus(stderr, "Warning: network hook \"%s\" exited"
1680
" with status %d\n", direntry->d_name,
1681
WEXITSTATUS(status));
1682
free(fullname);
1683
continue;
1684
}
1685
} else if(WIFSIGNALED(status)){
1686
fprintf_plus(stderr, "Warning: network hook \"%s\" died by"
1687
" signal %d\n", direntry->d_name,
1688
WTERMSIG(status));
1689
free(fullname);
1690
continue;
1691
} else {
1692
fprintf_plus(stderr, "Warning: network hook \"%s\" crashed\n",
1693
direntry->d_name);
1694
free(fullname);
1695
continue;
1696
}
1697
}
1698
free(fullname);
1699
if(quit_now){
1700
goto end;
1701
}
1702
}
1703
close(devnull);
1704
}
1705
}
1706
1707
1515
if(not debug){
1708
1516
avahi_set_log_function(empty_log);
1709
1517
}
1710
1518
1711
1519
if(interface[0] == '\0'){
1712
1520
struct dirent **direntries;
1713
/* First look for interfaces that are up */
1714
ret = scandir(sys_class_net, &direntries, up_interface,
1521
ret = scandir(sys_class_net, &direntries, good_interface,
1715
1522
alphasort);
1716
if(ret == 0){
1717
/* No up interfaces, look for any good interfaces */
1718
free(direntries);
1719
ret = scandir(sys_class_net, &direntries, good_interface,
1720
alphasort);
1721
}
1722
1523
if(ret >= 1){
1723
/* Pick the first interface returned */
1524
/* Pick the first good interface */
1724
1525
interface = strdup(direntries[0]->d_name);
1725
1526
if(debug){
1726
fprintf_plus(stderr, "Using interface \"%s\"\n", interface);
1527
fprintf(stderr, "Using interface \"%s\"\n", interface);
1727
1528
}
1728
1529
if(interface == NULL){
1729
1530
perror_plus("malloc");
1734
1535
free(direntries);
1735
1536
} else {
1736
1537
free(direntries);
1737
fprintf_plus(stderr, "Could not find a network interface\n");
1538
fprintf(stderr, "Could not find a network interface\n");
1738
1539
exitcode = EXIT_FAILURE;
1739
1540
goto end;
1740
1541
}
1746
1547
srand((unsigned int) time(NULL));
1747
1548
mc.simple_poll = avahi_simple_poll_new();
1748
1549
if(mc.simple_poll == NULL){
1749
fprintf_plus(stderr, "Avahi: Failed to create simple poll object.\n");
1550
fprintf(stderr, "Avahi: Failed to create simple poll object.\n");
1750
1551
exitcode = EX_UNAVAILABLE;
1751
1552
goto end;
1752
1553
}
1818
1619
if(strcmp(interface, "none") != 0){
1819
1620
if_index = (AvahiIfIndex) if_nametoindex(interface);
1820
1621
if(if_index == 0){
1821
fprintf_plus(stderr, "No such interface: \"%s\"\n", interface);
1622
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1822
1623
exitcode = EX_UNAVAILABLE;
1823
1624
goto end;
1824
1625
}
1965
1766
1966
1767
ret = init_gnutls_global(pubkey, seckey);
1967
1768
if(ret == -1){
1968
fprintf_plus(stderr, "init_gnutls_global failed\n");
1769
fprintf(stderr, "init_gnutls_global failed\n");
1969
1770
exitcode = EX_UNAVAILABLE;
1970
1771
goto end;
1971
1772
} else {
1987
1788
}
1988
1789
1989
1790
if(not init_gpgme(pubkey, seckey, tempdir)){
1990
fprintf_plus(stderr, "init_gpgme failed\n");
1791
fprintf(stderr, "init_gpgme failed\n");
1991
1792
exitcode = EX_UNAVAILABLE;
1992
1793
goto end;
1993
1794
} else {
2003
1804
/* (Mainly meant for debugging) */
2004
1805
char *address = strrchr(connect_to, ':');
2005
1806
if(address == NULL){
2006
fprintf_plus(stderr, "No colon in address\n");
1807
fprintf(stderr, "No colon in address\n");
2007
1808
exitcode = EX_USAGE;
2008
1809
goto end;
2009
1810
}
2017
1818
tmpmax = strtoimax(address+1, &tmp, 10);
2018
1819
if(errno != 0 or tmp == address+1 or *tmp != '\0'
2019
1820
or tmpmax != (uint16_t)tmpmax){
2020
fprintf_plus(stderr, "Bad port number\n");
1821
fprintf(stderr, "Bad port number\n");
2021
1822
exitcode = EX_USAGE;
2022
1823
goto end;
2023
1824
}
2028
1829
2029
1830
port = (uint16_t)tmpmax;
2030
1831
*address = '\0';
1832
address = connect_to;
2031
1833
/* Colon in address indicates IPv6 */
2032
1834
int af;
2033
if(strchr(connect_to, ':') != NULL){
1835
if(strchr(address, ':') != NULL){
2034
1836
af = AF_INET6;
2035
/* Accept [] around IPv6 address - see RFC 5952 */
2036
if(connect_to[0] == '[' and address[-1] == ']')
2037
{
2038
connect_to++;
2039
address[-1] = '\0';
2040
}
2041
1837
} else {
2042
1838
af = AF_INET;
2043
1839
}
2044
address = connect_to;
2045
1840
2046
1841
if(quit_now){
2047
1842
goto end;
2048
1843
}
2049
1844
2050
1845
while(not quit_now){
2051
1846
ret = start_mandos_communication(address, port, if_index, af);
2052
1847
if(quit_now or ret == 0){
2053
1848
break;
2054
1849
}
2055
if(debug){
2056
fprintf_plus(stderr, "Retrying in %d seconds\n", (int)retry_interval);
2057
}
2058
sleep((int)retry_interval);
2059
}
2060
1850
sleep((int)retry_interval or 1);
1851
};
1852
2061
1853
if (not quit_now){
2062
1854
exitcode = EXIT_SUCCESS;
2063
1855
}
2064
1856
2065
1857
goto end;
2066
1858
}
2067
1859
2089
1881
2090
1882
/* Check if creating the Avahi server object succeeded */
2091
1883
if(mc.server == NULL){
2092
fprintf_plus(stderr, "Failed to create Avahi server: %s\n",
1884
fprintf(stderr, "Failed to create Avahi server: %s\n",
2093
1885
avahi_strerror(error));
2094
1886
exitcode = EX_UNAVAILABLE;
2095
1887
goto end;
2104
1896
AVAHI_PROTO_UNSPEC, "_mandos._tcp",
2105
1897
NULL, 0, browse_callback, NULL);
2106
1898
if(sb == NULL){
2107
fprintf_plus(stderr, "Failed to create service browser: %s\n",
1899
fprintf(stderr, "Failed to create service browser: %s\n",
2108
1900
avahi_strerror(avahi_server_errno(mc.server)));
2109
1901
exitcode = EX_UNAVAILABLE;
2110
1902
goto end;
2117
1909
/* Run the main loop */
2118
1910
2119
1911
if(debug){
2120
fprintf_plus(stderr, "Starting Avahi loop search\n");
1912
fprintf(stderr, "Starting Avahi loop search\n");
2121
1913
}
2122
1914
2123
1915
ret = avahi_loop_with_timeout(mc.simple_poll,
2124
1916
(int)(retry_interval * 1000));
2125
1917
if(debug){
2126
fprintf_plus(stderr, "avahi_loop_with_timeout exited %s\n",
1918
fprintf(stderr, "avahi_loop_with_timeout exited %s\n",
2127
1919
(ret == 0) ? "successfully" : "with error");
2128
1920
}
2129
1921
2130
1922
end:
2131
1923
2132
1924
if(debug){
2133
fprintf_plus(stderr, "%s exiting\n", argv[0]);
1925
fprintf(stderr, "%s exiting\n", argv[0]);
2134
1926
}
2135
1927
2136
1928
/* Cleanup things */
2164
1956
}
2165
1957
}
2166
1958
2167
/* XXX run network hooks "stop" here */
2168
2169
1959
/* Take down the network interface */
2170
1960
if(take_down_interface){
2171
1961
/* Re-raise priviliges */
2178
1968
ret = ioctl(sd, SIOCGIFFLAGS, &network);
2179
1969
if(ret == -1){
2180
1970
perror_plus("ioctl SIOCGIFFLAGS");
2181
} else if(network.ifr_flags & IFF_UP){
1971
} else if(network.ifr_flags & IFF_UP) {
2182
1972
network.ifr_flags &= ~(short)IFF_UP; /* clear flag */
2183
1973
ret = ioctl(sd, SIOCSIFFLAGS, &network);
2184
1974
if(ret == -1){
2202
1992
if(tempdir_created){
2203
1993
struct dirent **direntries = NULL;
2204
1994
struct dirent *direntry = NULL;
2205
int numentries = scandir(tempdir, &direntries, notdotentries,
2206
alphasort);
2207
if (numentries > 0){
2208
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++){
2209
1998
direntry = direntries[i];
2210
1999
char *fullname = NULL;
2211
2000
ret = asprintf(&fullname, "%s/%s", tempdir,
2216
2005
}
2217
2006
ret = remove(fullname);
2218
2007
if(ret == -1){
2219
fprintf_plus(stderr, "remove(\"%s\"): %s\n", fullname, strerror(errno));
2008
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
2009
strerror(errno));
2220
2010
}
2221
2011
free(fullname);
2222
2012
}
2223
2013
}
2224
2014
2225
/* 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 */
2226
2017
free(direntries);
2227
if (numentries == -1){
2018
if (ret == -1){
2228
2019
perror_plus("scandir");
2229
2020
}
2230
2021
ret = rmdir(tempdir);
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0