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- Committer: Teddy Hogeborn
- Date: 2011-07-25 18:52:11 UTC
- mfrom: (489 trunk)
- mto: (237.4.29 release)
- mto: This revision was merged to the branch mainline in revision 490.
- Revision ID: teddy@fukt.bsnet.se-20110725185211-wlitr9jvs70e1xh8
Merge from trunk.
- 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(stderr, "Mandos plugin mandos-client: "
265
"bad gpgme_data_new_from_fd: %s: %s\n",
252
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
266
253
gpgme_strsource(rc), gpgme_strerror(rc));
267
254
return false;
268
255
}
269
256
270
257
rc = gpgme_op_import(mc.ctx, pgp_data);
271
258
if(rc != GPG_ERR_NO_ERROR){
272
fprintf(stderr, "Mandos plugin mandos-client: "
273
"bad gpgme_op_import: %s: %s\n",
259
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
274
260
gpgme_strsource(rc), gpgme_strerror(rc));
275
261
return false;
276
262
}
284
270
}
285
271
286
272
if(debug){
287
fprintf(stderr, "Mandos plugin mandos-client: "
288
"Initializing GPGME\n");
273
fprintf(stderr, "Initializing GPGME\n");
289
274
}
290
275
291
276
/* Init GPGME */
292
277
gpgme_check_version(NULL);
293
278
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
294
279
if(rc != GPG_ERR_NO_ERROR){
295
fprintf(stderr, "Mandos plugin mandos-client: "
296
"bad gpgme_engine_check_version: %s: %s\n",
280
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
297
281
gpgme_strsource(rc), gpgme_strerror(rc));
298
282
return false;
299
283
}
300
284
301
/* Set GPGME home directory for the OpenPGP engine only */
285
/* Set GPGME home directory for the OpenPGP engine only */
302
286
rc = gpgme_get_engine_info(&engine_info);
303
287
if(rc != GPG_ERR_NO_ERROR){
304
fprintf(stderr, "Mandos plugin mandos-client: "
305
"bad gpgme_get_engine_info: %s: %s\n",
288
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
306
289
gpgme_strsource(rc), gpgme_strerror(rc));
307
290
return false;
308
291
}
315
298
engine_info = engine_info->next;
316
299
}
317
300
if(engine_info == NULL){
318
fprintf(stderr, "Mandos plugin mandos-client: "
319
"Could not set GPGME home dir to %s\n", tempdir);
301
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
320
302
return false;
321
303
}
322
304
323
305
/* Create new GPGME "context" */
324
306
rc = gpgme_new(&(mc.ctx));
325
307
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));
308
fprintf(stderr, "bad gpgme_new: %s: %s\n",
309
gpgme_strsource(rc), gpgme_strerror(rc));
329
310
return false;
330
311
}
331
312
350
331
ssize_t plaintext_length = 0;
351
332
352
333
if(debug){
353
fprintf(stderr, "Mandos plugin mandos-client: "
354
"Trying to decrypt OpenPGP data\n");
334
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
355
335
}
356
336
357
337
/* Create new GPGME data buffer from memory cryptotext */
358
338
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
359
339
0);
360
340
if(rc != GPG_ERR_NO_ERROR){
361
fprintf(stderr, "Mandos plugin mandos-client: "
362
"bad gpgme_data_new_from_mem: %s: %s\n",
341
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
363
342
gpgme_strsource(rc), gpgme_strerror(rc));
364
343
return -1;
365
344
}
367
346
/* Create new empty GPGME data buffer for the plaintext */
368
347
rc = gpgme_data_new(&dh_plain);
369
348
if(rc != GPG_ERR_NO_ERROR){
370
fprintf(stderr, "Mandos plugin mandos-client: "
371
"bad gpgme_data_new: %s: %s\n",
349
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
372
350
gpgme_strsource(rc), gpgme_strerror(rc));
373
351
gpgme_data_release(dh_crypto);
374
352
return -1;
378
356
data buffer */
379
357
rc = gpgme_op_decrypt(mc.ctx, dh_crypto, dh_plain);
380
358
if(rc != GPG_ERR_NO_ERROR){
381
fprintf(stderr, "Mandos plugin mandos-client: "
382
"bad gpgme_op_decrypt: %s: %s\n",
359
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
383
360
gpgme_strsource(rc), gpgme_strerror(rc));
384
361
plaintext_length = -1;
385
362
if(debug){
386
363
gpgme_decrypt_result_t result;
387
364
result = gpgme_op_decrypt_result(mc.ctx);
388
365
if(result == NULL){
389
fprintf(stderr, "Mandos plugin mandos-client: "
390
"gpgme_op_decrypt_result failed\n");
366
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
391
367
} else {
392
fprintf(stderr, "Mandos plugin mandos-client: "
393
"Unsupported algorithm: %s\n",
368
fprintf(stderr, "Unsupported algorithm: %s\n",
394
369
result->unsupported_algorithm);
395
fprintf(stderr, "Mandos plugin mandos-client: "
396
"Wrong key usage: %u\n",
370
fprintf(stderr, "Wrong key usage: %u\n",
397
371
result->wrong_key_usage);
398
372
if(result->file_name != NULL){
399
fprintf(stderr, "Mandos plugin mandos-client: "
400
"File name: %s\n", result->file_name);
373
fprintf(stderr, "File name: %s\n", result->file_name);
401
374
}
402
375
gpgme_recipient_t recipient;
403
376
recipient = result->recipients;
404
377
while(recipient != NULL){
405
fprintf(stderr, "Mandos plugin mandos-client: "
406
"Public key algorithm: %s\n",
378
fprintf(stderr, "Public key algorithm: %s\n",
407
379
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",
380
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
381
fprintf(stderr, "Secret key available: %s\n",
412
382
recipient->status == GPG_ERR_NO_SECKEY
413
383
? "No" : "Yes");
414
384
recipient = recipient->next;
419
389
}
420
390
421
391
if(debug){
422
fprintf(stderr, "Mandos plugin mandos-client: "
423
"Decryption of OpenPGP data succeeded\n");
392
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
424
393
}
425
394
426
395
/* Seek back to the beginning of the GPGME plaintext data buffer */
433
402
*plaintext = NULL;
434
403
while(true){
435
404
plaintext_capacity = incbuffer(plaintext,
436
(size_t)plaintext_length,
437
plaintext_capacity);
405
(size_t)plaintext_length,
406
plaintext_capacity);
438
407
if(plaintext_capacity == 0){
439
perror_plus("incbuffer");
440
plaintext_length = -1;
441
goto decrypt_end;
408
perror_plus("incbuffer");
409
plaintext_length = -1;
410
goto decrypt_end;
442
411
}
443
412
444
413
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
457
426
}
458
427
459
428
if(debug){
460
fprintf(stderr, "Mandos plugin mandos-client: "
461
"Decrypted password is: ");
429
fprintf(stderr, "Decrypted password is: ");
462
430
for(ssize_t i = 0; i < plaintext_length; i++){
463
431
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
464
432
}
486
454
/* GnuTLS log function callback */
487
455
static void debuggnutls(__attribute__((unused)) int level,
488
456
const char* string){
489
fprintf(stderr, "Mandos plugin mandos-client: GnuTLS: %s", string);
457
fprintf(stderr, "GnuTLS: %s", string);
490
458
}
491
459
492
460
static int init_gnutls_global(const char *pubkeyfilename,
494
462
int ret;
495
463
496
464
if(debug){
497
fprintf(stderr, "Mandos plugin mandos-client: "
498
"Initializing GnuTLS\n");
465
fprintf(stderr, "Initializing GnuTLS\n");
499
466
}
500
467
501
468
ret = gnutls_global_init();
502
469
if(ret != GNUTLS_E_SUCCESS){
503
fprintf(stderr, "Mandos plugin mandos-client: "
504
"GnuTLS global_init: %s\n", safer_gnutls_strerror(ret));
470
fprintf(stderr, "GnuTLS global_init: %s\n",
471
safer_gnutls_strerror(ret));
505
472
return -1;
506
473
}
507
474
516
483
/* OpenPGP credentials */
517
484
ret = gnutls_certificate_allocate_credentials(&mc.cred);
518
485
if(ret != GNUTLS_E_SUCCESS){
519
fprintf(stderr, "Mandos plugin mandos-client: "
520
"GnuTLS memory error: %s\n", safer_gnutls_strerror(ret));
486
fprintf(stderr, "GnuTLS memory error: %s\n",
487
safer_gnutls_strerror(ret));
521
488
gnutls_global_deinit();
522
489
return -1;
523
490
}
524
491
525
492
if(debug){
526
fprintf(stderr, "Mandos plugin mandos-client: "
527
"Attempting to use OpenPGP public key %s and"
493
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
528
494
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
529
495
seckeyfilename);
530
496
}
534
500
GNUTLS_OPENPGP_FMT_BASE64);
535
501
if(ret != GNUTLS_E_SUCCESS){
536
502
fprintf(stderr,
537
"Mandos plugin mandos-client: "
538
503
"Error[%d] while reading the OpenPGP key pair ('%s',"
539
504
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
540
fprintf(stderr, "Mandos plugin mandos-client: "
541
"The GnuTLS error is: %s\n", safer_gnutls_strerror(ret));
505
fprintf(stderr, "The GnuTLS error is: %s\n",
506
safer_gnutls_strerror(ret));
542
507
goto globalfail;
543
508
}
544
509
545
510
/* GnuTLS server initialization */
546
511
ret = gnutls_dh_params_init(&mc.dh_params);
547
512
if(ret != GNUTLS_E_SUCCESS){
548
fprintf(stderr, "Mandos plugin mandos-client: "
549
"Error in GnuTLS DH parameter initialization:"
513
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
550
514
" %s\n", safer_gnutls_strerror(ret));
551
515
goto globalfail;
552
516
}
553
517
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
554
518
if(ret != GNUTLS_E_SUCCESS){
555
fprintf(stderr, "Mandos plugin mandos-client: "
556
"Error in GnuTLS prime generation: %s\n",
519
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
557
520
safer_gnutls_strerror(ret));
558
521
goto globalfail;
559
522
}
580
543
}
581
544
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
582
545
if(ret != GNUTLS_E_SUCCESS){
583
fprintf(stderr, "Mandos plugin mandos-client: "
584
"Error in GnuTLS session initialization: %s\n",
546
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
585
547
safer_gnutls_strerror(ret));
586
548
}
587
549
595
557
}
596
558
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
597
559
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));
560
fprintf(stderr, "Syntax error at: %s\n", err);
561
fprintf(stderr, "GnuTLS error: %s\n",
562
safer_gnutls_strerror(ret));
602
563
gnutls_deinit(*session);
603
564
return -1;
604
565
}
613
574
}
614
575
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
615
576
if(ret != GNUTLS_E_SUCCESS){
616
fprintf(stderr, "Mandos plugin mandos-client: "
617
"Error setting GnuTLS credentials: %s\n",
577
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
618
578
safer_gnutls_strerror(ret));
619
579
gnutls_deinit(*session);
620
580
return -1;
666
626
pf = PF_INET;
667
627
break;
668
628
default:
669
fprintf(stderr, "Mandos plugin mandos-client: "
670
"Bad address family: %d\n", af);
629
fprintf(stderr, "Bad address family: %d\n", af);
671
630
errno = EINVAL;
672
631
return -1;
673
632
}
678
637
}
679
638
680
639
if(debug){
681
fprintf(stderr, "Mandos plugin mandos-client: "
682
"Setting up a TCP connection to %s, port %" PRIu16
640
fprintf(stderr, "Setting up a TCP connection to %s, port %" PRIu16
683
641
"\n", ip, port);
684
642
}
685
643
712
670
}
713
671
if(ret == 0){
714
672
int e = errno;
715
fprintf(stderr, "Mandos plugin mandos-client: "
716
"Bad address: %s\n", ip);
673
fprintf(stderr, "Bad address: %s\n", ip);
717
674
errno = e;
718
675
goto mandos_end;
719
676
}
724
681
725
682
if(IN6_IS_ADDR_LINKLOCAL /* Spurious warnings from */
726
683
(&to.in6.sin6_addr)){ /* -Wstrict-aliasing=2 or lower and
727
-Wunreachable-code*/
684
-Wunreachable-code*/
728
685
if(if_index == AVAHI_IF_UNSPEC){
729
fprintf(stderr, "Mandos plugin mandos-client: "
730
"An IPv6 link-local address is incomplete"
686
fprintf(stderr, "An IPv6 link-local address is incomplete"
731
687
" without a network interface\n");
732
688
errno = EINVAL;
733
689
goto mandos_end;
752
708
if(if_indextoname((unsigned int)if_index, interface) == NULL){
753
709
perror_plus("if_indextoname");
754
710
} else {
755
fprintf(stderr, "Mandos plugin mandos-client: "
756
"Connection to: %s%%%s, port %" PRIu16 "\n",
711
fprintf(stderr, "Connection to: %s%%%s, port %" PRIu16 "\n",
757
712
ip, interface, port);
758
713
}
759
714
} else {
760
fprintf(stderr, "Mandos plugin mandos-client: "
761
"Connection to: %s, port %" PRIu16 "\n", ip, port);
715
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
716
port);
762
717
}
763
718
char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
764
719
INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
774
729
perror_plus("inet_ntop");
775
730
} else {
776
731
if(strcmp(addrstr, ip) != 0){
777
fprintf(stderr, "Mandos plugin mandos-client: "
778
"Canonical address form: %s\n", addrstr);
732
fprintf(stderr, "Canonical address form: %s\n", addrstr);
779
733
}
780
734
}
781
735
}
809
763
while(true){
810
764
size_t out_size = strlen(out);
811
765
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
812
out_size - written));
766
out_size - written));
813
767
if(ret == -1){
814
768
int e = errno;
815
769
perror_plus("write");
835
789
}
836
790
837
791
if(debug){
838
fprintf(stderr, "Mandos plugin mandos-client: "
839
"Establishing TLS session with %s\n", ip);
792
fprintf(stderr, "Establishing TLS session with %s\n", ip);
840
793
}
841
794
842
795
if(quit_now){
862
815
863
816
if(ret != GNUTLS_E_SUCCESS){
864
817
if(debug){
865
fprintf(stderr, "Mandos plugin mandos-client: "
866
"*** GnuTLS Handshake failed ***\n");
818
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
867
819
gnutls_perror(ret);
868
820
}
869
821
errno = EPROTO;
873
825
/* Read OpenPGP packet that contains the wanted password */
874
826
875
827
if(debug){
876
fprintf(stderr, "Mandos plugin mandos-client: "
877
"Retrieving OpenPGP encrypted password from %s\n", ip);
828
fprintf(stderr, "Retrieving OpenPGP encrypted password from %s\n",
829
ip);
878
830
}
879
831
880
832
while(true){
885
837
}
886
838
887
839
buffer_capacity = incbuffer(&buffer, buffer_length,
888
buffer_capacity);
840
buffer_capacity);
889
841
if(buffer_capacity == 0){
890
842
int e = errno;
891
843
perror_plus("incbuffer");
918
870
}
919
871
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
920
872
if(ret < 0){
921
fprintf(stderr, "Mandos plugin mandos-client: "
922
"*** GnuTLS Re-handshake failed ***\n");
873
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
923
874
gnutls_perror(ret);
924
875
errno = EPROTO;
925
876
goto mandos_end;
926
877
}
927
878
break;
928
879
default:
929
fprintf(stderr, "Mandos plugin mandos-client: "
930
"Unknown error while reading data from"
880
fprintf(stderr, "Unknown error while reading data from"
931
881
" encrypted session with Mandos server\n");
932
882
gnutls_bye(session, GNUTLS_SHUT_RDWR);
933
883
errno = EIO;
939
889
}
940
890
941
891
if(debug){
942
fprintf(stderr, "Mandos plugin mandos-client: "
943
"Closing TLS session\n");
892
fprintf(stderr, "Closing TLS session\n");
944
893
}
945
894
946
895
if(quit_now){
958
907
959
908
if(buffer_length > 0){
960
909
ssize_t decrypted_buffer_size;
961
decrypted_buffer_size = pgp_packet_decrypt(buffer, buffer_length,
910
decrypted_buffer_size = pgp_packet_decrypt(buffer,
911
buffer_length,
962
912
&decrypted_buffer);
963
913
if(decrypted_buffer_size >= 0){
964
914
975
925
if(ret == 0 and ferror(stdout)){
976
926
int e = errno;
977
927
if(debug){
978
fprintf(stderr, "Mandos plugin mandos-client: "
979
"Error writing encrypted data: %s\n",
928
fprintf(stderr, "Error writing encrypted data: %s\n",
980
929
strerror(errno));
981
930
}
982
931
errno = e;
1040
989
switch(event){
1041
990
default:
1042
991
case AVAHI_RESOLVER_FAILURE:
1043
fprintf(stderr, "Mandos plugin mandos-client: "
1044
"(Avahi Resolver) Failed to resolve service '%s'"
992
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
1045
993
" of type '%s' in domain '%s': %s\n", name, type, domain,
1046
994
avahi_strerror(avahi_server_errno(mc.server)));
1047
995
break;
1051
999
char ip[AVAHI_ADDRESS_STR_MAX];
1052
1000
avahi_address_snprint(ip, sizeof(ip), address);
1053
1001
if(debug){
1054
fprintf(stderr, "Mandos plugin mandos-client: "
1055
"Mandos server \"%s\" found on %s (%s, %"
1002
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
1056
1003
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
1057
1004
ip, (intmax_t)interface, port);
1058
1005
}
1092
1039
default:
1093
1040
case AVAHI_BROWSER_FAILURE:
1094
1041
1095
fprintf(stderr, "Mandos plugin mandos-client: "
1096
"(Avahi browser) %s\n",
1042
fprintf(stderr, "(Avahi browser) %s\n",
1097
1043
avahi_strerror(avahi_server_errno(mc.server)));
1098
1044
avahi_simple_poll_quit(mc.simple_poll);
1099
1045
return;
1107
1053
if(avahi_s_service_resolver_new(mc.server, interface, protocol,
1108
1054
name, type, domain, protocol, 0,
1109
1055
resolve_callback, NULL) == NULL)
1110
fprintf(stderr, "Mandos plugin mandos-client: "
1111
"Avahi: Failed to resolve service '%s': %s\n",
1056
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
1112
1057
name, avahi_strerror(avahi_server_errno(mc.server)));
1113
1058
break;
1114
1059
1118
1063
case AVAHI_BROWSER_ALL_FOR_NOW:
1119
1064
case AVAHI_BROWSER_CACHE_EXHAUSTED:
1120
1065
if(debug){
1121
fprintf(stderr, "Mandos plugin mandos-client: "
1122
"No Mandos server found, still searching...\n");
1066
fprintf(stderr, "No Mandos server found, still searching...\n");
1123
1067
}
1124
1068
break;
1125
1069
}
1140
1084
errno = old_errno;
1141
1085
}
1142
1086
1143
bool get_flags(const char *ifname, struct ifreq *ifr){
1144
int ret;
1145
1146
int s = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1147
if(s < 0){
1148
perror_plus("socket");
1149
return false;
1150
}
1151
strcpy(ifr->ifr_name, ifname);
1152
ret = ioctl(s, SIOCGIFFLAGS, ifr);
1153
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){
1154
1143
if(debug){
1155
perror_plus("ioctl SIOCGIFFLAGS");
1144
fprintf(stderr, "Invalid flags \"%s\" for interface \"%s\"\n",
1145
flagstring, if_entry->d_name);
1156
1146
}
1157
return false;
1147
free(flagstring);
1148
return 0;
1158
1149
}
1159
return true;
1160
}
1161
1162
bool good_flags(const char *ifname, const struct ifreq *ifr){
1163
1150
free(flagstring);
1151
ifreq_flags flags = (ifreq_flags)tmpmax;
1164
1152
/* Reject the loopback device */
1165
if(ifr->ifr_flags & IFF_LOOPBACK){
1153
if(flags & IFF_LOOPBACK){
1166
1154
if(debug){
1167
fprintf(stderr, "Mandos plugin mandos-client: "
1168
"Rejecting loopback interface \"%s\"\n", ifname);
1155
fprintf(stderr, "Rejecting loopback interface \"%s\"\n",
1156
if_entry->d_name);
1169
1157
}
1170
return false;
1158
return 0;
1171
1159
}
1172
1160
/* Accept point-to-point devices only if connect_to is specified */
1173
if(connect_to != NULL and (ifr->ifr_flags & IFF_POINTOPOINT)){
1161
if(connect_to != NULL and (flags & IFF_POINTOPOINT)){
1174
1162
if(debug){
1175
fprintf(stderr, "Mandos plugin mandos-client: "
1176
"Accepting point-to-point interface \"%s\"\n", ifname);
1163
fprintf(stderr, "Accepting point-to-point interface \"%s\"\n",
1164
if_entry->d_name);
1177
1165
}
1178
return true;
1166
return 1;
1179
1167
}
1180
1168
/* Otherwise, reject non-broadcast-capable devices */
1181
if(not (ifr->ifr_flags & IFF_BROADCAST)){
1169
if(not (flags & IFF_BROADCAST)){
1182
1170
if(debug){
1183
fprintf(stderr, "Mandos plugin mandos-client: "
1184
"Rejecting non-broadcast interface \"%s\"\n", ifname);
1171
fprintf(stderr, "Rejecting non-broadcast interface \"%s\"\n",
1172
if_entry->d_name);
1185
1173
}
1186
return false;
1174
return 0;
1187
1175
}
1188
1176
/* Reject non-ARP interfaces (including dummy interfaces) */
1189
if(ifr->ifr_flags & IFF_NOARP){
1177
if(flags & IFF_NOARP){
1190
1178
if(debug){
1191
fprintf(stderr, "Mandos plugin mandos-client: "
1192
"Rejecting non-ARP interface \"%s\"\n", ifname);
1179
fprintf(stderr, "Rejecting non-ARP interface \"%s\"\n",
1180
if_entry->d_name);
1193
1181
}
1194
return false;
1182
return 0;
1195
1183
}
1196
1197
1184
/* Accept this device */
1198
1185
if(debug){
1199
fprintf(stderr, "Mandos plugin mandos-client: "
1200
"Interface \"%s\" is good\n", ifname);
1201
}
1202
return true;
1203
}
1204
1205
/*
1206
* This function determines if a directory entry in /sys/class/net
1207
* corresponds to an acceptable network device.
1208
* (This function is passed to scandir(3) as a filter function.)
1209
*/
1210
int good_interface(const struct dirent *if_entry){
1211
if(if_entry->d_name[0] == '.'){
1212
return 0;
1213
}
1214
1215
struct ifreq ifr;
1216
if(not get_flags(if_entry->d_name, &ifr)){
1217
if(debug){
1218
fprintf(stderr, "Mandos plugin mandos-client: "
1219
"Failed to get flags for interface \"%s\"\n",
1220
if_entry->d_name);
1221
}
1222
return 0;
1223
}
1224
1225
if(not good_flags(if_entry->d_name, &ifr)){
1226
return 0;
1227
}
1228
return 1;
1229
}
1230
1231
/*
1232
* This function determines if a directory entry in /sys/class/net
1233
* corresponds to an acceptable network device which is up.
1234
* (This function is passed to scandir(3) as a filter function.)
1235
*/
1236
int up_interface(const struct dirent *if_entry){
1237
if(if_entry->d_name[0] == '.'){
1238
return 0;
1239
}
1240
1241
struct ifreq ifr;
1242
if(not get_flags(if_entry->d_name, &ifr)){
1243
if(debug){
1244
fprintf(stderr, "Mandos plugin mandos-client: "
1245
"Failed to get flags for interface \"%s\"\n",
1246
if_entry->d_name);
1247
}
1248
return 0;
1249
}
1250
1251
/* Reject down interfaces */
1252
if(not (ifr.ifr_flags & IFF_UP)){
1253
if(debug){
1254
fprintf(stderr, "Mandos plugin mandos-client: "
1255
"Rejecting down interface \"%s\"\n",
1256
if_entry->d_name);
1257
}
1258
return 0;
1259
}
1260
1261
/* Reject non-running interfaces */
1262
if(not (ifr.ifr_flags & IFF_RUNNING)){
1263
if(debug){
1264
fprintf(stderr, "Mandos plugin mandos-client: "
1265
"Rejecting non-running interface \"%s\"\n",
1266
if_entry->d_name);
1267
}
1268
return 0;
1269
}
1270
1271
if(not good_flags(if_entry->d_name, &ifr)){
1272
return 0;
1186
fprintf(stderr, "Interface \"%s\" is acceptable\n",
1187
if_entry->d_name);
1273
1188
}
1274
1189
return 1;
1275
1190
}
1285
1200
return 1;
1286
1201
}
1287
1202
1288
/* Is this directory entry a runnable program? */
1289
int runnable_hook(const struct dirent *direntry){
1290
int ret;
1291
size_t sret;
1292
struct stat st;
1293
1294
if((direntry->d_name)[0] == '\0'){
1295
/* Empty name? */
1296
return 0;
1297
}
1298
1299
sret = strspn(direntry->d_name, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1300
"abcdefghijklmnopqrstuvwxyz"
1301
"0123456789"
1302
"_-");
1303
if((direntry->d_name)[sret] != '\0'){
1304
/* Contains non-allowed characters */
1305
if(debug){
1306
fprintf(stderr, "Mandos plugin mandos-client: "
1307
"Ignoring hook \"%s\" with bad name\n",
1308
direntry->d_name);
1309
}
1310
return 0;
1311
}
1312
1313
char *fullname = NULL;
1314
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1315
if(ret < 0){
1316
perror_plus("asprintf");
1317
return 0;
1318
}
1319
1320
ret = stat(fullname, &st);
1321
if(ret == -1){
1322
if(debug){
1323
perror_plus("Could not stat hook");
1324
}
1325
return 0;
1326
}
1327
if(not (S_ISREG(st.st_mode))){
1328
/* Not a regular file */
1329
if(debug){
1330
fprintf(stderr, "Mandos plugin mandos-client: "
1331
"Ignoring hook \"%s\" - not a file\n",
1332
direntry->d_name);
1333
}
1334
return 0;
1335
}
1336
if(not (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))){
1337
/* Not executable */
1338
if(debug){
1339
fprintf(stderr, "Mandos plugin mandos-client: "
1340
"Ignoring hook \"%s\" - not executable\n",
1341
direntry->d_name);
1342
}
1343
return 0;
1344
}
1345
return 1;
1346
}
1347
1348
1203
int avahi_loop_with_timeout(AvahiSimplePoll *s, int retry_interval){
1349
1204
int ret;
1350
1205
struct timespec now;
1351
1206
struct timespec waited_time;
1352
1207
intmax_t block_time;
1353
1208
1354
1209
while(true){
1355
1210
if(mc.current_server == NULL){
1356
1211
if (debug){
1357
fprintf(stderr, "Mandos plugin mandos-client: "
1212
fprintf(stderr,
1358
1213
"Wait until first server is found. No timeout!\n");
1359
1214
}
1360
1215
ret = avahi_simple_poll_iterate(s, -1);
1361
1216
} else {
1362
1217
if (debug){
1363
fprintf(stderr, "Mandos plugin mandos-client: "
1364
"Check current_server if we should run it,"
1218
fprintf(stderr, "Check current_server if we should run it,"
1365
1219
" or wait\n");
1366
1220
}
1367
1221
/* the current time */
1382
1236
block_time = ((retry_interval
1383
1237
- ((intmax_t)waited_time.tv_sec * 1000))
1384
1238
- ((intmax_t)waited_time.tv_nsec / 1000000));
1385
1239
1386
1240
if (debug){
1387
fprintf(stderr, "Mandos plugin mandos-client: "
1388
"Blocking for %" PRIdMAX " ms\n", block_time);
1241
fprintf(stderr, "Blocking for %ld ms\n", block_time);
1389
1242
}
1390
1243
1391
1244
if(block_time <= 0){
1392
1245
ret = start_mandos_communication(mc.current_server->ip,
1393
1246
mc.current_server->port,
1411
1264
ret = avahi_simple_poll_iterate(s, (int)block_time);
1412
1265
}
1413
1266
if(ret != 0){
1414
if (ret > 0 or errno != EINTR){
1267
if (ret > 0 or errno != EINTR) {
1415
1268
return (ret != 1) ? ret : 0;
1416
1269
}
1417
1270
}
1505
1358
.arg = "SECONDS",
1506
1359
.doc = "Retry interval used when denied by the mandos server",
1507
1360
.group = 2 },
1508
{ .name = "network-hook-dir", .key = 133,
1509
.arg = "DIR",
1510
.doc = "Directory where network hooks are located",
1511
.group = 2 },
1512
1361
/*
1513
1362
* These reproduce what we would get without ARGP_NO_HELP
1514
1363
*/
1562
1411
errno = 0;
1563
1412
retry_interval = strtod(arg, &tmp);
1564
1413
if(errno != 0 or tmp == arg or *tmp != '\0'
1565
or (retry_interval * 1000) > INT_MAX
1566
or retry_interval < 0){
1414
or (retry_interval * 1000) > INT_MAX){
1567
1415
argp_error(state, "Bad retry interval");
1568
1416
}
1569
1417
break;
1570
case 133: /* --network-hook-dir */
1571
hookdir = arg;
1572
break;
1573
1418
/*
1574
1419
* These reproduce what we would get without ARGP_NO_HELP
1575
1420
*/
1581
1426
argp_state_help(state, state->out_stream,
1582
1427
ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);
1583
1428
case 'V': /* --version */
1584
fprintf(state->out_stream, "Mandos plugin mandos-client: ");
1585
1429
fprintf(state->out_stream, "%s\n", argp_program_version);
1586
1430
exit(argp_err_exit_status);
1587
1431
break;
1624
1468
perror_plus("seteuid");
1625
1469
}
1626
1470
1627
if(strcmp(seckey, PATHDIR "/" SECKEY) == 0){
1628
int seckey_fd = open(seckey, O_RDONLY);
1629
if(seckey_fd == -1){
1630
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");
1631
1478
} 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
}
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");
1641
1483
}
1642
1484
}
1643
TEMP_FAILURE_RETRY(close(seckey_fd));
1644
1485
}
1486
TEMP_FAILURE_RETRY(close(seckey_fd));
1645
1487
}
1646
1488
1647
if(strcmp(pubkey, PATHDIR "/" PUBKEY) == 0){
1648
int pubkey_fd = open(pubkey, O_RDONLY);
1649
if(pubkey_fd == -1){
1650
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");
1651
1496
} 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
}
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");
1661
1501
}
1662
1502
}
1663
TEMP_FAILURE_RETRY(close(pubkey_fd));
1664
1503
}
1504
TEMP_FAILURE_RETRY(close(pubkey_fd));
1665
1505
}
1666
1506
1667
1507
/* Lower privileges */
1672
1512
}
1673
1513
}
1674
1514
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
} 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);
1771
}
1772
}
1773
1774
1515
if(not debug){
1775
1516
avahi_set_log_function(empty_log);
1776
1517
}
1777
1518
1778
1519
if(interface[0] == '\0'){
1779
1520
struct dirent **direntries;
1780
/* First look for interfaces that are up */
1781
ret = scandir(sys_class_net, &direntries, up_interface,
1521
ret = scandir(sys_class_net, &direntries, good_interface,
1782
1522
alphasort);
1783
if(ret == 0){
1784
/* No up interfaces, look for any good interfaces */
1785
free(direntries);
1786
ret = scandir(sys_class_net, &direntries, good_interface,
1787
alphasort);
1788
}
1789
1523
if(ret >= 1){
1790
/* Pick the first interface returned */
1524
/* Pick the first good interface */
1791
1525
interface = strdup(direntries[0]->d_name);
1792
1526
if(debug){
1793
fprintf(stderr, "Mandos plugin mandos-client: "
1794
"Using interface \"%s\"\n", interface);
1527
fprintf(stderr, "Using interface \"%s\"\n", interface);
1795
1528
}
1796
1529
if(interface == NULL){
1797
1530
perror_plus("malloc");
1802
1535
free(direntries);
1803
1536
} else {
1804
1537
free(direntries);
1805
fprintf(stderr, "Mandos plugin mandos-client: "
1806
"Could not find a network interface\n");
1538
fprintf(stderr, "Could not find a network interface\n");
1807
1539
exitcode = EXIT_FAILURE;
1808
1540
goto end;
1809
1541
}
1815
1547
srand((unsigned int) time(NULL));
1816
1548
mc.simple_poll = avahi_simple_poll_new();
1817
1549
if(mc.simple_poll == NULL){
1818
fprintf(stderr, "Mandos plugin mandos-client: "
1819
"Avahi: Failed to create simple poll object.\n");
1550
fprintf(stderr, "Avahi: Failed to create simple poll object.\n");
1820
1551
exitcode = EX_UNAVAILABLE;
1821
1552
goto end;
1822
1553
}
1888
1619
if(strcmp(interface, "none") != 0){
1889
1620
if_index = (AvahiIfIndex) if_nametoindex(interface);
1890
1621
if(if_index == 0){
1891
fprintf(stderr, "Mandos plugin mandos-client: "
1892
"No such interface: \"%s\"\n", interface);
1622
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1893
1623
exitcode = EX_UNAVAILABLE;
1894
1624
goto end;
1895
1625
}
2036
1766
2037
1767
ret = init_gnutls_global(pubkey, seckey);
2038
1768
if(ret == -1){
2039
fprintf(stderr, "Mandos plugin mandos-client: "
2040
"init_gnutls_global failed\n");
1769
fprintf(stderr, "init_gnutls_global failed\n");
2041
1770
exitcode = EX_UNAVAILABLE;
2042
1771
goto end;
2043
1772
} else {
2059
1788
}
2060
1789
2061
1790
if(not init_gpgme(pubkey, seckey, tempdir)){
2062
fprintf(stderr, "Mandos plugin mandos-client: "
2063
"init_gpgme failed\n");
1791
fprintf(stderr, "init_gpgme failed\n");
2064
1792
exitcode = EX_UNAVAILABLE;
2065
1793
goto end;
2066
1794
} else {
2076
1804
/* (Mainly meant for debugging) */
2077
1805
char *address = strrchr(connect_to, ':');
2078
1806
if(address == NULL){
2079
fprintf(stderr, "Mandos plugin mandos-client: "
2080
"No colon in address\n");
1807
fprintf(stderr, "No colon in address\n");
2081
1808
exitcode = EX_USAGE;
2082
1809
goto end;
2083
1810
}
2091
1818
tmpmax = strtoimax(address+1, &tmp, 10);
2092
1819
if(errno != 0 or tmp == address+1 or *tmp != '\0'
2093
1820
or tmpmax != (uint16_t)tmpmax){
2094
fprintf(stderr, "Mandos plugin mandos-client: "
2095
"Bad port number\n");
1821
fprintf(stderr, "Bad port number\n");
2096
1822
exitcode = EX_USAGE;
2097
1823
goto end;
2098
1824
}
2103
1829
2104
1830
port = (uint16_t)tmpmax;
2105
1831
*address = '\0';
1832
address = connect_to;
2106
1833
/* Colon in address indicates IPv6 */
2107
1834
int af;
2108
if(strchr(connect_to, ':') != NULL){
1835
if(strchr(address, ':') != NULL){
2109
1836
af = AF_INET6;
2110
/* Accept [] around IPv6 address - see RFC 5952 */
2111
if(connect_to[0] == '[' and address[-1] == ']')
2112
{
2113
connect_to++;
2114
address[-1] = '\0';
2115
}
2116
1837
} else {
2117
1838
af = AF_INET;
2118
1839
}
2119
address = connect_to;
2120
1840
2121
1841
if(quit_now){
2122
1842
goto end;
2123
1843
}
2124
1844
2125
1845
while(not quit_now){
2126
1846
ret = start_mandos_communication(address, port, if_index, af);
2127
1847
if(quit_now or ret == 0){
2128
1848
break;
2129
1849
}
2130
if(debug){
2131
fprintf(stderr, "Mandos plugin mandos-client: "
2132
"Retrying in %d seconds\n", (int)retry_interval);
2133
}
2134
sleep((int)retry_interval);
2135
}
2136
1850
sleep((int)retry_interval or 1);
1851
};
1852
2137
1853
if (not quit_now){
2138
1854
exitcode = EXIT_SUCCESS;
2139
1855
}
2140
1856
2141
1857
goto end;
2142
1858
}
2143
1859
2165
1881
2166
1882
/* Check if creating the Avahi server object succeeded */
2167
1883
if(mc.server == NULL){
2168
fprintf(stderr, "Mandos plugin mandos-client: "
2169
"Failed to create Avahi server: %s\n",
1884
fprintf(stderr, "Failed to create Avahi server: %s\n",
2170
1885
avahi_strerror(error));
2171
1886
exitcode = EX_UNAVAILABLE;
2172
1887
goto end;
2181
1896
AVAHI_PROTO_UNSPEC, "_mandos._tcp",
2182
1897
NULL, 0, browse_callback, NULL);
2183
1898
if(sb == NULL){
2184
fprintf(stderr, "Mandos plugin mandos-client: "
2185
"Failed to create service browser: %s\n",
1899
fprintf(stderr, "Failed to create service browser: %s\n",
2186
1900
avahi_strerror(avahi_server_errno(mc.server)));
2187
1901
exitcode = EX_UNAVAILABLE;
2188
1902
goto end;
2195
1909
/* Run the main loop */
2196
1910
2197
1911
if(debug){
2198
fprintf(stderr, "Mandos plugin mandos-client: "
2199
"Starting Avahi loop search\n");
1912
fprintf(stderr, "Starting Avahi loop search\n");
2200
1913
}
2201
1914
2202
1915
ret = avahi_loop_with_timeout(mc.simple_poll,
2203
1916
(int)(retry_interval * 1000));
2204
1917
if(debug){
2205
fprintf(stderr, "Mandos plugin mandos-client: "
2206
"avahi_loop_with_timeout exited %s\n",
1918
fprintf(stderr, "avahi_loop_with_timeout exited %s\n",
2207
1919
(ret == 0) ? "successfully" : "with error");
2208
1920
}
2209
1921
2210
1922
end:
2211
1923
2212
1924
if(debug){
2213
fprintf(stderr, "Mandos plugin mandos-client: "
2214
"%s exiting\n", argv[0]);
1925
fprintf(stderr, "%s exiting\n", argv[0]);
2215
1926
}
2216
1927
2217
1928
/* Cleanup things */
2245
1956
}
2246
1957
}
2247
1958
2248
/* XXX run network hooks "stop" here */
2249
2250
1959
/* Take down the network interface */
2251
1960
if(take_down_interface){
2252
1961
/* Re-raise priviliges */
2259
1968
ret = ioctl(sd, SIOCGIFFLAGS, &network);
2260
1969
if(ret == -1){
2261
1970
perror_plus("ioctl SIOCGIFFLAGS");
2262
} else if(network.ifr_flags & IFF_UP){
1971
} else if(network.ifr_flags & IFF_UP) {
2263
1972
network.ifr_flags &= ~(short)IFF_UP; /* clear flag */
2264
1973
ret = ioctl(sd, SIOCSIFFLAGS, &network);
2265
1974
if(ret == -1){
2283
1992
if(tempdir_created){
2284
1993
struct dirent **direntries = NULL;
2285
1994
struct dirent *direntry = NULL;
2286
int numentries = scandir(tempdir, &direntries, notdotentries,
2287
alphasort);
2288
if (numentries > 0){
2289
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++){
2290
1998
direntry = direntries[i];
2291
1999
char *fullname = NULL;
2292
2000
ret = asprintf(&fullname, "%s/%s", tempdir,
2297
2005
}
2298
2006
ret = remove(fullname);
2299
2007
if(ret == -1){
2300
fprintf(stderr, "Mandos plugin mandos-client: "
2301
"remove(\"%s\"): %s\n", fullname, strerror(errno));
2008
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
2009
strerror(errno));
2302
2010
}
2303
2011
free(fullname);
2304
2012
}
2305
2013
}
2306
2014
2307
/* 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 */
2308
2017
free(direntries);
2309
if (numentries == -1){
2018
if (ret == -1){
2310
2019
perror_plus("scandir");
2311
2020
}
2312
2021
ret = rmdir(tempdir);
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0