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- Committer: teddy at bsnet
- Date: 2011-11-13 20:49:21 UTC
- mto: (505.2.5 mandos-client-network-hooks)
- mto: This revision was merged to the branch mainline in revision 525.
- Revision ID: teddy@fukt.bsnet.se-20111113204921-vbnwtmuq01isvgsc
* initramfs-tools-hook: Install network hooks (and any required files)
in the initramfs image.
* plugins.d/mandos-client.c (main): Also set MANDOSNETHOOKDIR for
network hooks.
* plugins.d/mandos-client.xml (OPTIONS): Use <filename
class="directory">, not
<directory>.
in the initramfs image.
* plugins.d/mandos-client.c (main): Also set MANDOSNETHOOKDIR for
network hooks.
* plugins.d/mandos-client.xml (OPTIONS): Use <filename
class="directory">, not
<directory>.
- files added:
- 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@fukt.bsnet.se>.
29
* Contact the authors at <mandos@recompile.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() */
56
#include <sys/stat.h> /* open(), S_ISREG */
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() */
88
90
89
91
#ifdef __linux__
90
92
#include <sys/klog.h> /* klogctl() */
108
110
init_gnutls_session(),
109
111
GNUTLS_* */
110
112
#include <gnutls/openpgp.h>
111
/* gnutls_certificate_set_openpgp_key_file(),
112
GNUTLS_OPENPGP_FMT_BASE64 */
113
/* gnutls_certificate_set_openpgp_key_file(),
114
GNUTLS_OPENPGP_FMT_BASE64 */
113
115
114
116
/* GPGME */
115
117
#include <gpgme.h> /* All GPGME types, constants and
123
125
#define PATHDIR "/conf/conf.d/mandos"
124
126
#define SECKEY "seckey.txt"
125
127
#define PUBKEY "pubkey.txt"
128
#define HOOKDIR "/lib/mandos/network-hooks.d"
126
129
127
130
bool debug = false;
128
131
static const char mandos_protocol_version[] = "1";
129
132
const char *argp_program_version = "mandos-client " VERSION;
130
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
133
const char *argp_program_bug_address = "<mandos@recompile.se>";
131
134
static const char sys_class_net[] = "/sys/class/net";
132
135
char *connect_to = NULL;
136
const char *hookdir = HOOKDIR;
133
137
134
138
/* Doubly linked list that need to be circularly linked when used */
135
139
typedef struct server{
176
180
* "buffer_length" is how much is already used.
177
181
*/
178
182
size_t incbuffer(char **buffer, size_t buffer_length,
179
size_t buffer_capacity){
183
size_t buffer_capacity){
180
184
if(buffer_length + BUFFER_SIZE > buffer_capacity){
181
185
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
182
186
if(buffer == NULL){
187
191
return buffer_capacity;
188
192
}
189
193
190
int add_server(const char *ip, uint16_t port,
191
AvahiIfIndex if_index,
192
int af){
194
/* Add server to set of servers to retry periodically */
195
int add_server(const char *ip, uint16_t port, AvahiIfIndex if_index,
196
int af){
193
197
int ret;
194
198
server *new_server = malloc(sizeof(server));
195
199
if(new_server == NULL){
197
201
return -1;
198
202
}
199
203
*new_server = (server){ .ip = strdup(ip),
200
.port = port,
201
.if_index = if_index,
202
.af = af };
204
.port = port,
205
.if_index = if_index,
206
.af = af };
203
207
if(new_server->ip == NULL){
204
208
perror_plus("strdup");
205
209
return -1;
206
210
}
207
/* unique case of first server */
211
/* Special case of first server */
208
212
if (mc.current_server == NULL){
209
213
new_server->next = new_server;
210
214
new_server->prev = new_server;
211
215
mc.current_server = new_server;
212
/* Placing the new server last in the list */
216
/* Place the new server last in the list */
213
217
} else {
214
218
new_server->next = mc.current_server;
215
219
new_server->prev = mc.current_server->prev;
227
231
/*
228
232
* Initialize GPGME.
229
233
*/
230
static bool init_gpgme(const char *seckey,
231
const char *pubkey, const char *tempdir){
234
static bool init_gpgme(const char *seckey, const char *pubkey,
235
const char *tempdir){
232
236
gpgme_error_t rc;
233
237
gpgme_engine_info_t engine_info;
234
238
249
253
250
254
rc = gpgme_data_new_from_fd(&pgp_data, fd);
251
255
if(rc != GPG_ERR_NO_ERROR){
252
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
256
fprintf(stderr, "Mandos plugin mandos-client: "
257
"bad gpgme_data_new_from_fd: %s: %s\n",
253
258
gpgme_strsource(rc), gpgme_strerror(rc));
254
259
return false;
255
260
}
256
261
257
262
rc = gpgme_op_import(mc.ctx, pgp_data);
258
263
if(rc != GPG_ERR_NO_ERROR){
259
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
264
fprintf(stderr, "Mandos plugin mandos-client: "
265
"bad gpgme_op_import: %s: %s\n",
260
266
gpgme_strsource(rc), gpgme_strerror(rc));
261
267
return false;
262
268
}
270
276
}
271
277
272
278
if(debug){
273
fprintf(stderr, "Initializing GPGME\n");
279
fprintf(stderr, "Mandos plugin mandos-client: "
280
"Initializing GPGME\n");
274
281
}
275
282
276
283
/* Init GPGME */
277
284
gpgme_check_version(NULL);
278
285
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
279
286
if(rc != GPG_ERR_NO_ERROR){
280
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
287
fprintf(stderr, "Mandos plugin mandos-client: "
288
"bad gpgme_engine_check_version: %s: %s\n",
281
289
gpgme_strsource(rc), gpgme_strerror(rc));
282
290
return false;
283
291
}
284
292
285
/* Set GPGME home directory for the OpenPGP engine only */
293
/* Set GPGME home directory for the OpenPGP engine only */
286
294
rc = gpgme_get_engine_info(&engine_info);
287
295
if(rc != GPG_ERR_NO_ERROR){
288
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
296
fprintf(stderr, "Mandos plugin mandos-client: "
297
"bad gpgme_get_engine_info: %s: %s\n",
289
298
gpgme_strsource(rc), gpgme_strerror(rc));
290
299
return false;
291
300
}
298
307
engine_info = engine_info->next;
299
308
}
300
309
if(engine_info == NULL){
301
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
310
fprintf(stderr, "Mandos plugin mandos-client: "
311
"Could not set GPGME home dir to %s\n", tempdir);
302
312
return false;
303
313
}
304
314
305
315
/* Create new GPGME "context" */
306
316
rc = gpgme_new(&(mc.ctx));
307
317
if(rc != GPG_ERR_NO_ERROR){
308
fprintf(stderr, "bad gpgme_new: %s: %s\n",
309
gpgme_strsource(rc), gpgme_strerror(rc));
318
fprintf(stderr, "Mandos plugin mandos-client: "
319
"bad gpgme_new: %s: %s\n", gpgme_strsource(rc),
320
gpgme_strerror(rc));
310
321
return false;
311
322
}
312
323
331
342
ssize_t plaintext_length = 0;
332
343
333
344
if(debug){
334
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
345
fprintf(stderr, "Mandos plugin mandos-client: "
346
"Trying to decrypt OpenPGP data\n");
335
347
}
336
348
337
349
/* Create new GPGME data buffer from memory cryptotext */
338
350
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
339
351
0);
340
352
if(rc != GPG_ERR_NO_ERROR){
341
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
353
fprintf(stderr, "Mandos plugin mandos-client: "
354
"bad gpgme_data_new_from_mem: %s: %s\n",
342
355
gpgme_strsource(rc), gpgme_strerror(rc));
343
356
return -1;
344
357
}
346
359
/* Create new empty GPGME data buffer for the plaintext */
347
360
rc = gpgme_data_new(&dh_plain);
348
361
if(rc != GPG_ERR_NO_ERROR){
349
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
362
fprintf(stderr, "Mandos plugin mandos-client: "
363
"bad gpgme_data_new: %s: %s\n",
350
364
gpgme_strsource(rc), gpgme_strerror(rc));
351
365
gpgme_data_release(dh_crypto);
352
366
return -1;
356
370
data buffer */
357
371
rc = gpgme_op_decrypt(mc.ctx, dh_crypto, dh_plain);
358
372
if(rc != GPG_ERR_NO_ERROR){
359
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
373
fprintf(stderr, "Mandos plugin mandos-client: "
374
"bad gpgme_op_decrypt: %s: %s\n",
360
375
gpgme_strsource(rc), gpgme_strerror(rc));
361
376
plaintext_length = -1;
362
377
if(debug){
363
378
gpgme_decrypt_result_t result;
364
379
result = gpgme_op_decrypt_result(mc.ctx);
365
380
if(result == NULL){
366
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
381
fprintf(stderr, "Mandos plugin mandos-client: "
382
"gpgme_op_decrypt_result failed\n");
367
383
} else {
368
fprintf(stderr, "Unsupported algorithm: %s\n",
384
fprintf(stderr, "Mandos plugin mandos-client: "
385
"Unsupported algorithm: %s\n",
369
386
result->unsupported_algorithm);
370
fprintf(stderr, "Wrong key usage: %u\n",
387
fprintf(stderr, "Mandos plugin mandos-client: "
388
"Wrong key usage: %u\n",
371
389
result->wrong_key_usage);
372
390
if(result->file_name != NULL){
373
fprintf(stderr, "File name: %s\n", result->file_name);
391
fprintf(stderr, "Mandos plugin mandos-client: "
392
"File name: %s\n", result->file_name);
374
393
}
375
394
gpgme_recipient_t recipient;
376
395
recipient = result->recipients;
377
396
while(recipient != NULL){
378
fprintf(stderr, "Public key algorithm: %s\n",
397
fprintf(stderr, "Mandos plugin mandos-client: "
398
"Public key algorithm: %s\n",
379
399
gpgme_pubkey_algo_name(recipient->pubkey_algo));
380
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
381
fprintf(stderr, "Secret key available: %s\n",
400
fprintf(stderr, "Mandos plugin mandos-client: "
401
"Key ID: %s\n", recipient->keyid);
402
fprintf(stderr, "Mandos plugin mandos-client: "
403
"Secret key available: %s\n",
382
404
recipient->status == GPG_ERR_NO_SECKEY
383
405
? "No" : "Yes");
384
406
recipient = recipient->next;
389
411
}
390
412
391
413
if(debug){
392
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
414
fprintf(stderr, "Mandos plugin mandos-client: "
415
"Decryption of OpenPGP data succeeded\n");
393
416
}
394
417
395
418
/* Seek back to the beginning of the GPGME plaintext data buffer */
402
425
*plaintext = NULL;
403
426
while(true){
404
427
plaintext_capacity = incbuffer(plaintext,
405
(size_t)plaintext_length,
406
plaintext_capacity);
428
(size_t)plaintext_length,
429
plaintext_capacity);
407
430
if(plaintext_capacity == 0){
408
perror_plus("incbuffer");
409
plaintext_length = -1;
410
goto decrypt_end;
431
perror_plus("incbuffer");
432
plaintext_length = -1;
433
goto decrypt_end;
411
434
}
412
435
413
436
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
426
449
}
427
450
428
451
if(debug){
429
fprintf(stderr, "Decrypted password is: ");
452
fprintf(stderr, "Mandos plugin mandos-client: "
453
"Decrypted password is: ");
430
454
for(ssize_t i = 0; i < plaintext_length; i++){
431
455
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
432
456
}
454
478
/* GnuTLS log function callback */
455
479
static void debuggnutls(__attribute__((unused)) int level,
456
480
const char* string){
457
fprintf(stderr, "GnuTLS: %s", string);
481
fprintf(stderr, "Mandos plugin mandos-client: GnuTLS: %s", string);
458
482
}
459
483
460
484
static int init_gnutls_global(const char *pubkeyfilename,
462
486
int ret;
463
487
464
488
if(debug){
465
fprintf(stderr, "Initializing GnuTLS\n");
489
fprintf(stderr, "Mandos plugin mandos-client: "
490
"Initializing GnuTLS\n");
466
491
}
467
492
468
493
ret = gnutls_global_init();
469
494
if(ret != GNUTLS_E_SUCCESS){
470
fprintf(stderr, "GnuTLS global_init: %s\n",
471
safer_gnutls_strerror(ret));
495
fprintf(stderr, "Mandos plugin mandos-client: "
496
"GnuTLS global_init: %s\n", safer_gnutls_strerror(ret));
472
497
return -1;
473
498
}
474
499
483
508
/* OpenPGP credentials */
484
509
ret = gnutls_certificate_allocate_credentials(&mc.cred);
485
510
if(ret != GNUTLS_E_SUCCESS){
486
fprintf(stderr, "GnuTLS memory error: %s\n",
487
safer_gnutls_strerror(ret));
511
fprintf(stderr, "Mandos plugin mandos-client: "
512
"GnuTLS memory error: %s\n", safer_gnutls_strerror(ret));
488
513
gnutls_global_deinit();
489
514
return -1;
490
515
}
491
516
492
517
if(debug){
493
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
518
fprintf(stderr, "Mandos plugin mandos-client: "
519
"Attempting to use OpenPGP public key %s and"
494
520
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
495
521
seckeyfilename);
496
522
}
500
526
GNUTLS_OPENPGP_FMT_BASE64);
501
527
if(ret != GNUTLS_E_SUCCESS){
502
528
fprintf(stderr,
529
"Mandos plugin mandos-client: "
503
530
"Error[%d] while reading the OpenPGP key pair ('%s',"
504
531
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
505
fprintf(stderr, "The GnuTLS error is: %s\n",
506
safer_gnutls_strerror(ret));
532
fprintf(stderr, "Mandos plugin mandos-client: "
533
"The GnuTLS error is: %s\n", safer_gnutls_strerror(ret));
507
534
goto globalfail;
508
535
}
509
536
510
537
/* GnuTLS server initialization */
511
538
ret = gnutls_dh_params_init(&mc.dh_params);
512
539
if(ret != GNUTLS_E_SUCCESS){
513
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
540
fprintf(stderr, "Mandos plugin mandos-client: "
541
"Error in GnuTLS DH parameter initialization:"
514
542
" %s\n", safer_gnutls_strerror(ret));
515
543
goto globalfail;
516
544
}
517
545
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
518
546
if(ret != GNUTLS_E_SUCCESS){
519
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
547
fprintf(stderr, "Mandos plugin mandos-client: "
548
"Error in GnuTLS prime generation: %s\n",
520
549
safer_gnutls_strerror(ret));
521
550
goto globalfail;
522
551
}
543
572
}
544
573
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
545
574
if(ret != GNUTLS_E_SUCCESS){
546
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
575
fprintf(stderr, "Mandos plugin mandos-client: "
576
"Error in GnuTLS session initialization: %s\n",
547
577
safer_gnutls_strerror(ret));
548
578
}
549
579
557
587
}
558
588
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
559
589
if(ret != GNUTLS_E_SUCCESS){
560
fprintf(stderr, "Syntax error at: %s\n", err);
561
fprintf(stderr, "GnuTLS error: %s\n",
562
safer_gnutls_strerror(ret));
590
fprintf(stderr, "Mandos plugin mandos-client: "
591
"Syntax error at: %s\n", err);
592
fprintf(stderr, "Mandos plugin mandos-client: "
593
"GnuTLS error: %s\n", safer_gnutls_strerror(ret));
563
594
gnutls_deinit(*session);
564
595
return -1;
565
596
}
574
605
}
575
606
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
576
607
if(ret != GNUTLS_E_SUCCESS){
577
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
608
fprintf(stderr, "Mandos plugin mandos-client: "
609
"Error setting GnuTLS credentials: %s\n",
578
610
safer_gnutls_strerror(ret));
579
611
gnutls_deinit(*session);
580
612
return -1;
626
658
pf = PF_INET;
627
659
break;
628
660
default:
629
fprintf(stderr, "Bad address family: %d\n", af);
661
fprintf(stderr, "Mandos plugin mandos-client: "
662
"Bad address family: %d\n", af);
630
663
errno = EINVAL;
631
664
return -1;
632
665
}
637
670
}
638
671
639
672
if(debug){
640
fprintf(stderr, "Setting up a TCP connection to %s, port %" PRIu16
673
fprintf(stderr, "Mandos plugin mandos-client: "
674
"Setting up a TCP connection to %s, port %" PRIu16
641
675
"\n", ip, port);
642
676
}
643
677
670
704
}
671
705
if(ret == 0){
672
706
int e = errno;
673
fprintf(stderr, "Bad address: %s\n", ip);
707
fprintf(stderr, "Mandos plugin mandos-client: "
708
"Bad address: %s\n", ip);
674
709
errno = e;
675
710
goto mandos_end;
676
711
}
681
716
682
717
if(IN6_IS_ADDR_LINKLOCAL /* Spurious warnings from */
683
718
(&to.in6.sin6_addr)){ /* -Wstrict-aliasing=2 or lower and
684
-Wunreachable-code*/
719
-Wunreachable-code*/
685
720
if(if_index == AVAHI_IF_UNSPEC){
686
fprintf(stderr, "An IPv6 link-local address is incomplete"
721
fprintf(stderr, "Mandos plugin mandos-client: "
722
"An IPv6 link-local address is incomplete"
687
723
" without a network interface\n");
688
724
errno = EINVAL;
689
725
goto mandos_end;
708
744
if(if_indextoname((unsigned int)if_index, interface) == NULL){
709
745
perror_plus("if_indextoname");
710
746
} else {
711
fprintf(stderr, "Connection to: %s%%%s, port %" PRIu16 "\n",
747
fprintf(stderr, "Mandos plugin mandos-client: "
748
"Connection to: %s%%%s, port %" PRIu16 "\n",
712
749
ip, interface, port);
713
750
}
714
751
} else {
715
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
716
port);
752
fprintf(stderr, "Mandos plugin mandos-client: "
753
"Connection to: %s, port %" PRIu16 "\n", ip, port);
717
754
}
718
755
char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
719
756
INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
729
766
perror_plus("inet_ntop");
730
767
} else {
731
768
if(strcmp(addrstr, ip) != 0){
732
fprintf(stderr, "Canonical address form: %s\n", addrstr);
769
fprintf(stderr, "Mandos plugin mandos-client: "
770
"Canonical address form: %s\n", addrstr);
733
771
}
734
772
}
735
773
}
763
801
while(true){
764
802
size_t out_size = strlen(out);
765
803
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
766
out_size - written));
804
out_size - written));
767
805
if(ret == -1){
768
806
int e = errno;
769
807
perror_plus("write");
789
827
}
790
828
791
829
if(debug){
792
fprintf(stderr, "Establishing TLS session with %s\n", ip);
830
fprintf(stderr, "Mandos plugin mandos-client: "
831
"Establishing TLS session with %s\n", ip);
793
832
}
794
833
795
834
if(quit_now){
815
854
816
855
if(ret != GNUTLS_E_SUCCESS){
817
856
if(debug){
818
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
857
fprintf(stderr, "Mandos plugin mandos-client: "
858
"*** GnuTLS Handshake failed ***\n");
819
859
gnutls_perror(ret);
820
860
}
821
861
errno = EPROTO;
825
865
/* Read OpenPGP packet that contains the wanted password */
826
866
827
867
if(debug){
828
fprintf(stderr, "Retrieving OpenPGP encrypted password from %s\n",
829
ip);
868
fprintf(stderr, "Mandos plugin mandos-client: "
869
"Retrieving OpenPGP encrypted password from %s\n", ip);
830
870
}
831
871
832
872
while(true){
837
877
}
838
878
839
879
buffer_capacity = incbuffer(&buffer, buffer_length,
840
buffer_capacity);
880
buffer_capacity);
841
881
if(buffer_capacity == 0){
842
882
int e = errno;
843
883
perror_plus("incbuffer");
870
910
}
871
911
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
872
912
if(ret < 0){
873
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
913
fprintf(stderr, "Mandos plugin mandos-client: "
914
"*** GnuTLS Re-handshake failed ***\n");
874
915
gnutls_perror(ret);
875
916
errno = EPROTO;
876
917
goto mandos_end;
877
918
}
878
919
break;
879
920
default:
880
fprintf(stderr, "Unknown error while reading data from"
921
fprintf(stderr, "Mandos plugin mandos-client: "
922
"Unknown error while reading data from"
881
923
" encrypted session with Mandos server\n");
882
924
gnutls_bye(session, GNUTLS_SHUT_RDWR);
883
925
errno = EIO;
889
931
}
890
932
891
933
if(debug){
892
fprintf(stderr, "Closing TLS session\n");
934
fprintf(stderr, "Mandos plugin mandos-client: "
935
"Closing TLS session\n");
893
936
}
894
937
895
938
if(quit_now){
907
950
908
951
if(buffer_length > 0){
909
952
ssize_t decrypted_buffer_size;
910
decrypted_buffer_size = pgp_packet_decrypt(buffer,
911
buffer_length,
953
decrypted_buffer_size = pgp_packet_decrypt(buffer, buffer_length,
912
954
&decrypted_buffer);
913
955
if(decrypted_buffer_size >= 0){
914
956
925
967
if(ret == 0 and ferror(stdout)){
926
968
int e = errno;
927
969
if(debug){
928
fprintf(stderr, "Error writing encrypted data: %s\n",
970
fprintf(stderr, "Mandos plugin mandos-client: "
971
"Error writing encrypted data: %s\n",
929
972
strerror(errno));
930
973
}
931
974
errno = e;
989
1032
switch(event){
990
1033
default:
991
1034
case AVAHI_RESOLVER_FAILURE:
992
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
1035
fprintf(stderr, "Mandos plugin mandos-client: "
1036
"(Avahi Resolver) Failed to resolve service '%s'"
993
1037
" of type '%s' in domain '%s': %s\n", name, type, domain,
994
1038
avahi_strerror(avahi_server_errno(mc.server)));
995
1039
break;
999
1043
char ip[AVAHI_ADDRESS_STR_MAX];
1000
1044
avahi_address_snprint(ip, sizeof(ip), address);
1001
1045
if(debug){
1002
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
1046
fprintf(stderr, "Mandos plugin mandos-client: "
1047
"Mandos server \"%s\" found on %s (%s, %"
1003
1048
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
1004
1049
ip, (intmax_t)interface, port);
1005
1050
}
1039
1084
default:
1040
1085
case AVAHI_BROWSER_FAILURE:
1041
1086
1042
fprintf(stderr, "(Avahi browser) %s\n",
1087
fprintf(stderr, "Mandos plugin mandos-client: "
1088
"(Avahi browser) %s\n",
1043
1089
avahi_strerror(avahi_server_errno(mc.server)));
1044
1090
avahi_simple_poll_quit(mc.simple_poll);
1045
1091
return;
1053
1099
if(avahi_s_service_resolver_new(mc.server, interface, protocol,
1054
1100
name, type, domain, protocol, 0,
1055
1101
resolve_callback, NULL) == NULL)
1056
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
1102
fprintf(stderr, "Mandos plugin mandos-client: "
1103
"Avahi: Failed to resolve service '%s': %s\n",
1057
1104
name, avahi_strerror(avahi_server_errno(mc.server)));
1058
1105
break;
1059
1106
1063
1110
case AVAHI_BROWSER_ALL_FOR_NOW:
1064
1111
case AVAHI_BROWSER_CACHE_EXHAUSTED:
1065
1112
if(debug){
1066
fprintf(stderr, "No Mandos server found, still searching...\n");
1113
fprintf(stderr, "Mandos plugin mandos-client: "
1114
"No Mandos server found, still searching...\n");
1067
1115
}
1068
1116
break;
1069
1117
}
1084
1132
errno = old_errno;
1085
1133
}
1086
1134
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){
1135
bool get_flags(const char *ifname, struct ifreq *ifr){
1136
int ret;
1137
1138
int s = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1139
if(s < 0){
1140
perror_plus("socket");
1141
return false;
1142
}
1143
strcpy(ifr->ifr_name, ifname);
1144
ret = ioctl(s, SIOCGIFFLAGS, ifr);
1145
if(ret == -1){
1143
1146
if(debug){
1144
fprintf(stderr, "Invalid flags \"%s\" for interface \"%s\"\n",
1145
flagstring, if_entry->d_name);
1147
perror_plus("ioctl SIOCGIFFLAGS");
1146
1148
}
1147
free(flagstring);
1148
return 0;
1149
return false;
1149
1150
}
1150
free(flagstring);
1151
ifreq_flags flags = (ifreq_flags)tmpmax;
1151
return true;
1152
}
1153
1154
bool good_flags(const char *ifname, const struct ifreq *ifr){
1155
1152
1156
/* Reject the loopback device */
1153
if(flags & IFF_LOOPBACK){
1157
if(ifr->ifr_flags & IFF_LOOPBACK){
1154
1158
if(debug){
1155
fprintf(stderr, "Rejecting loopback interface \"%s\"\n",
1156
if_entry->d_name);
1159
fprintf(stderr, "Mandos plugin mandos-client: "
1160
"Rejecting loopback interface \"%s\"\n", ifname);
1157
1161
}
1158
return 0;
1162
return false;
1159
1163
}
1160
1164
/* Accept point-to-point devices only if connect_to is specified */
1161
if(connect_to != NULL and (flags & IFF_POINTOPOINT)){
1165
if(connect_to != NULL and (ifr->ifr_flags & IFF_POINTOPOINT)){
1162
1166
if(debug){
1163
fprintf(stderr, "Accepting point-to-point interface \"%s\"\n",
1164
if_entry->d_name);
1167
fprintf(stderr, "Mandos plugin mandos-client: "
1168
"Accepting point-to-point interface \"%s\"\n", ifname);
1165
1169
}
1166
return 1;
1170
return true;
1167
1171
}
1168
1172
/* Otherwise, reject non-broadcast-capable devices */
1169
if(not (flags & IFF_BROADCAST)){
1173
if(not (ifr->ifr_flags & IFF_BROADCAST)){
1170
1174
if(debug){
1171
fprintf(stderr, "Rejecting non-broadcast interface \"%s\"\n",
1172
if_entry->d_name);
1175
fprintf(stderr, "Mandos plugin mandos-client: "
1176
"Rejecting non-broadcast interface \"%s\"\n", ifname);
1173
1177
}
1174
return 0;
1178
return false;
1175
1179
}
1176
1180
/* Reject non-ARP interfaces (including dummy interfaces) */
1177
if(flags & IFF_NOARP){
1181
if(ifr->ifr_flags & IFF_NOARP){
1178
1182
if(debug){
1179
fprintf(stderr, "Rejecting non-ARP interface \"%s\"\n",
1180
if_entry->d_name);
1183
fprintf(stderr, "Mandos plugin mandos-client: "
1184
"Rejecting non-ARP interface \"%s\"\n", ifname);
1181
1185
}
1182
return 0;
1186
return false;
1183
1187
}
1188
1184
1189
/* Accept this device */
1185
1190
if(debug){
1186
fprintf(stderr, "Interface \"%s\" is acceptable\n",
1187
if_entry->d_name);
1191
fprintf(stderr, "Mandos plugin mandos-client: "
1192
"Interface \"%s\" is good\n", ifname);
1193
}
1194
return true;
1195
}
1196
1197
/*
1198
* This function determines if a directory entry in /sys/class/net
1199
* corresponds to an acceptable network device.
1200
* (This function is passed to scandir(3) as a filter function.)
1201
*/
1202
int good_interface(const struct dirent *if_entry){
1203
if(if_entry->d_name[0] == '.'){
1204
return 0;
1205
}
1206
1207
struct ifreq ifr;
1208
if(not get_flags(if_entry->d_name, &ifr)){
1209
if(debug){
1210
fprintf(stderr, "Mandos plugin mandos-client: "
1211
"Failed to get flags for interface \"%s\"\n",
1212
if_entry->d_name);
1213
}
1214
return 0;
1215
}
1216
1217
if(not good_flags(if_entry->d_name, &ifr)){
1218
return 0;
1219
}
1220
return 1;
1221
}
1222
1223
/*
1224
* This function determines if a directory entry in /sys/class/net
1225
* corresponds to an acceptable network device which is up.
1226
* (This function is passed to scandir(3) as a filter function.)
1227
*/
1228
int up_interface(const struct dirent *if_entry){
1229
if(if_entry->d_name[0] == '.'){
1230
return 0;
1231
}
1232
1233
struct ifreq ifr;
1234
if(not get_flags(if_entry->d_name, &ifr)){
1235
if(debug){
1236
fprintf(stderr, "Mandos plugin mandos-client: "
1237
"Failed to get flags for interface \"%s\"\n",
1238
if_entry->d_name);
1239
}
1240
return 0;
1241
}
1242
1243
/* Reject down interfaces */
1244
if(not (ifr.ifr_flags & IFF_UP)){
1245
if(debug){
1246
fprintf(stderr, "Mandos plugin mandos-client: "
1247
"Rejecting down interface \"%s\"\n",
1248
if_entry->d_name);
1249
}
1250
return 0;
1251
}
1252
1253
/* Reject non-running interfaces */
1254
if(not (ifr.ifr_flags & IFF_RUNNING)){
1255
if(debug){
1256
fprintf(stderr, "Mandos plugin mandos-client: "
1257
"Rejecting non-running interface \"%s\"\n",
1258
if_entry->d_name);
1259
}
1260
return 0;
1261
}
1262
1263
if(not good_flags(if_entry->d_name, &ifr)){
1264
return 0;
1188
1265
}
1189
1266
return 1;
1190
1267
}
1200
1277
return 1;
1201
1278
}
1202
1279
1280
/* Is this directory entry a runnable program? */
1281
int runnable_hook(const struct dirent *direntry){
1282
int ret;
1283
size_t sret;
1284
struct stat st;
1285
1286
if((direntry->d_name)[0] == '\0'){
1287
/* Empty name? */
1288
return 0;
1289
}
1290
1291
sret = strspn(direntry->d_name, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1292
"abcdefghijklmnopqrstuvwxyz"
1293
"0123456789"
1294
"_-");
1295
if((direntry->d_name)[sret] != '\0'){
1296
/* Contains non-allowed characters */
1297
if(debug){
1298
fprintf(stderr, "Mandos plugin mandos-client: "
1299
"Ignoring hook \"%s\" with bad name\n",
1300
direntry->d_name);
1301
}
1302
return 0;
1303
}
1304
1305
char *fullname = NULL;
1306
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1307
if(ret < 0){
1308
perror_plus("asprintf");
1309
return 0;
1310
}
1311
1312
ret = stat(fullname, &st);
1313
if(ret == -1){
1314
if(debug){
1315
perror_plus("Could not stat hook");
1316
}
1317
return 0;
1318
}
1319
if(not (S_ISREG(st.st_mode))){
1320
/* Not a regular file */
1321
if(debug){
1322
fprintf(stderr, "Mandos plugin mandos-client: "
1323
"Ignoring hook \"%s\" - not a file\n",
1324
direntry->d_name);
1325
}
1326
return 0;
1327
}
1328
if(not (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))){
1329
/* Not executable */
1330
if(debug){
1331
fprintf(stderr, "Mandos plugin mandos-client: "
1332
"Ignoring hook \"%s\" - not executable\n",
1333
direntry->d_name);
1334
}
1335
return 0;
1336
}
1337
return 1;
1338
}
1339
1203
1340
int avahi_loop_with_timeout(AvahiSimplePoll *s, int retry_interval){
1204
1341
int ret;
1205
1342
struct timespec now;
1206
1343
struct timespec waited_time;
1207
1344
intmax_t block_time;
1208
1345
1209
1346
while(true){
1210
1347
if(mc.current_server == NULL){
1211
1348
if (debug){
1212
fprintf(stderr,
1349
fprintf(stderr, "Mandos plugin mandos-client: "
1213
1350
"Wait until first server is found. No timeout!\n");
1214
1351
}
1215
1352
ret = avahi_simple_poll_iterate(s, -1);
1216
1353
} else {
1217
1354
if (debug){
1218
fprintf(stderr, "Check current_server if we should run it,"
1355
fprintf(stderr, "Mandos plugin mandos-client: "
1356
"Check current_server if we should run it,"
1219
1357
" or wait\n");
1220
1358
}
1221
1359
/* the current time */
1236
1374
block_time = ((retry_interval
1237
1375
- ((intmax_t)waited_time.tv_sec * 1000))
1238
1376
- ((intmax_t)waited_time.tv_nsec / 1000000));
1239
1377
1240
1378
if (debug){
1241
fprintf(stderr, "Blocking for %ld ms\n", block_time);
1379
fprintf(stderr, "Mandos plugin mandos-client: "
1380
"Blocking for %" PRIdMAX " ms\n", block_time);
1242
1381
}
1243
1382
1244
1383
if(block_time <= 0){
1245
1384
ret = start_mandos_communication(mc.current_server->ip,
1246
1385
mc.current_server->port,
1264
1403
ret = avahi_simple_poll_iterate(s, (int)block_time);
1265
1404
}
1266
1405
if(ret != 0){
1267
if (ret > 0 or errno != EINTR) {
1406
if (ret > 0 or errno != EINTR){
1268
1407
return (ret != 1) ? ret : 0;
1269
1408
}
1270
1409
}
1358
1497
.arg = "SECONDS",
1359
1498
.doc = "Retry interval used when denied by the mandos server",
1360
1499
.group = 2 },
1500
{ .name = "network-hook-dir", .key = 133,
1501
.arg = "DIR",
1502
.doc = "Directory where network hooks are located",
1503
.group = 2 },
1361
1504
/*
1362
1505
* These reproduce what we would get without ARGP_NO_HELP
1363
1506
*/
1411
1554
errno = 0;
1412
1555
retry_interval = strtod(arg, &tmp);
1413
1556
if(errno != 0 or tmp == arg or *tmp != '\0'
1414
or (retry_interval * 1000) > INT_MAX){
1557
or (retry_interval * 1000) > INT_MAX
1558
or retry_interval < 0){
1415
1559
argp_error(state, "Bad retry interval");
1416
1560
}
1417
1561
break;
1562
case 133: /* --network-hook-dir */
1563
hookdir = arg;
1564
break;
1418
1565
/*
1419
1566
* These reproduce what we would get without ARGP_NO_HELP
1420
1567
*/
1426
1573
argp_state_help(state, state->out_stream,
1427
1574
ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);
1428
1575
case 'V': /* --version */
1576
fprintf(state->out_stream, "Mandos plugin mandos-client: ");
1429
1577
fprintf(state->out_stream, "%s\n", argp_program_version);
1430
1578
exit(argp_err_exit_status);
1431
1579
break;
1468
1616
perror_plus("seteuid");
1469
1617
}
1470
1618
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");
1619
if(strcmp(seckey, PATHDIR "/" SECKEY) == 0){
1620
int seckey_fd = open(seckey, O_RDONLY);
1621
if(seckey_fd == -1){
1622
perror_plus("open");
1478
1623
} else {
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");
1624
ret = (int)TEMP_FAILURE_RETRY(fstat(seckey_fd, &st));
1625
if(ret == -1){
1626
perror_plus("fstat");
1627
} else {
1628
if(S_ISREG(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
1629
ret = fchown(seckey_fd, uid, gid);
1630
if(ret == -1){
1631
perror_plus("fchown");
1632
}
1483
1633
}
1484
1634
}
1635
TEMP_FAILURE_RETRY(close(seckey_fd));
1485
1636
}
1486
TEMP_FAILURE_RETRY(close(seckey_fd));
1487
1637
}
1488
1638
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");
1639
if(strcmp(pubkey, PATHDIR "/" PUBKEY) == 0){
1640
int pubkey_fd = open(pubkey, O_RDONLY);
1641
if(pubkey_fd == -1){
1642
perror_plus("open");
1496
1643
} else {
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");
1644
ret = (int)TEMP_FAILURE_RETRY(fstat(pubkey_fd, &st));
1645
if(ret == -1){
1646
perror_plus("fstat");
1647
} else {
1648
if(S_ISREG(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
1649
ret = fchown(pubkey_fd, uid, gid);
1650
if(ret == -1){
1651
perror_plus("fchown");
1652
}
1501
1653
}
1502
1654
}
1655
TEMP_FAILURE_RETRY(close(pubkey_fd));
1503
1656
}
1504
TEMP_FAILURE_RETRY(close(pubkey_fd));
1505
1657
}
1506
1658
1507
1659
/* Lower privileges */
1512
1664
}
1513
1665
}
1514
1666
1667
/* Find network hooks and run them */
1668
{
1669
struct dirent **direntries;
1670
struct dirent *direntry;
1671
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1672
alphasort);
1673
if(numhooks == -1){
1674
perror_plus("scandir");
1675
} else {
1676
int devnull = open("/dev/null", O_RDONLY);
1677
for(int i = 0; i < numhooks; i++){
1678
direntry = direntries[0];
1679
char *fullname = NULL;
1680
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1681
if(ret < 0){
1682
perror_plus("asprintf");
1683
continue;
1684
}
1685
pid_t hook_pid = fork();
1686
if(hook_pid == 0){
1687
/* Child */
1688
dup2(devnull, STDIN_FILENO);
1689
close(devnull);
1690
dup2(STDERR_FILENO, STDOUT_FILENO);
1691
ret = setenv("MANDOSNETHOOKDIR", hookdir, 1);
1692
if(ret == -1){
1693
perror_plus("setenv");
1694
exit(1);
1695
}
1696
ret = setenv("DEVICE", interface, 1);
1697
if(ret == -1){
1698
perror_plus("setenv");
1699
exit(1);
1700
}
1701
ret = setenv("VERBOSE", debug ? "1" : "0", 1);
1702
if(ret == -1){
1703
perror_plus("setenv");
1704
exit(1);
1705
}
1706
ret = setenv("MODE", "start", 1);
1707
if(ret == -1){
1708
perror_plus("setenv");
1709
exit(1);
1710
}
1711
char *delaystring;
1712
ret = asprintf(&delaystring, "%f", delay);
1713
if(ret == -1){
1714
perror_plus("asprintf");
1715
exit(1);
1716
}
1717
ret = setenv("DELAY", delaystring, 1);
1718
if(ret == -1){
1719
free(delaystring);
1720
perror_plus("setenv");
1721
exit(1);
1722
}
1723
free(delaystring);
1724
ret = execl(fullname, direntry->d_name, "start", NULL);
1725
perror_plus("execl");
1726
} else {
1727
int status;
1728
if(TEMP_FAILURE_RETRY(waitpid(hook_pid, &status, 0)) == -1){
1729
perror_plus("waitpid");
1730
free(fullname);
1731
continue;
1732
}
1733
if(WIFEXITED(status)){
1734
if(WEXITSTATUS(status) != 0){
1735
fprintf(stderr, "Mandos plugin mandos-client: "
1736
"Warning: network hook \"%s\" exited"
1737
" with status %d\n", direntry->d_name,
1738
WEXITSTATUS(status));
1739
free(fullname);
1740
continue;
1741
}
1742
} else if(WIFSIGNALED(status)){
1743
fprintf(stderr, "Mandos plugin mandos-client: "
1744
"Warning: network hook \"%s\" died by"
1745
" signal %d\n", direntry->d_name,
1746
WTERMSIG(status));
1747
free(fullname);
1748
continue;
1749
} else {
1750
fprintf(stderr, "Mandos plugin mandos-client: "
1751
"Warning: network hook \"%s\" crashed\n",
1752
direntry->d_name);
1753
free(fullname);
1754
continue;
1755
}
1756
}
1757
free(fullname);
1758
if(quit_now){
1759
goto end;
1760
}
1761
}
1762
close(devnull);
1763
}
1764
}
1765
1515
1766
if(not debug){
1516
1767
avahi_set_log_function(empty_log);
1517
1768
}
1518
1769
1519
1770
if(interface[0] == '\0'){
1520
1771
struct dirent **direntries;
1521
ret = scandir(sys_class_net, &direntries, good_interface,
1772
/* First look for interfaces that are up */
1773
ret = scandir(sys_class_net, &direntries, up_interface,
1522
1774
alphasort);
1775
if(ret == 0){
1776
/* No up interfaces, look for any good interfaces */
1777
free(direntries);
1778
ret = scandir(sys_class_net, &direntries, good_interface,
1779
alphasort);
1780
}
1523
1781
if(ret >= 1){
1524
/* Pick the first good interface */
1782
/* Pick the first interface returned */
1525
1783
interface = strdup(direntries[0]->d_name);
1526
1784
if(debug){
1527
fprintf(stderr, "Using interface \"%s\"\n", interface);
1785
fprintf(stderr, "Mandos plugin mandos-client: "
1786
"Using interface \"%s\"\n", interface);
1528
1787
}
1529
1788
if(interface == NULL){
1530
1789
perror_plus("malloc");
1535
1794
free(direntries);
1536
1795
} else {
1537
1796
free(direntries);
1538
fprintf(stderr, "Could not find a network interface\n");
1797
fprintf(stderr, "Mandos plugin mandos-client: "
1798
"Could not find a network interface\n");
1539
1799
exitcode = EXIT_FAILURE;
1540
1800
goto end;
1541
1801
}
1547
1807
srand((unsigned int) time(NULL));
1548
1808
mc.simple_poll = avahi_simple_poll_new();
1549
1809
if(mc.simple_poll == NULL){
1550
fprintf(stderr, "Avahi: Failed to create simple poll object.\n");
1810
fprintf(stderr, "Mandos plugin mandos-client: "
1811
"Avahi: Failed to create simple poll object.\n");
1551
1812
exitcode = EX_UNAVAILABLE;
1552
1813
goto end;
1553
1814
}
1619
1880
if(strcmp(interface, "none") != 0){
1620
1881
if_index = (AvahiIfIndex) if_nametoindex(interface);
1621
1882
if(if_index == 0){
1622
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1883
fprintf(stderr, "Mandos plugin mandos-client: "
1884
"No such interface: \"%s\"\n", interface);
1623
1885
exitcode = EX_UNAVAILABLE;
1624
1886
goto end;
1625
1887
}
1766
2028
1767
2029
ret = init_gnutls_global(pubkey, seckey);
1768
2030
if(ret == -1){
1769
fprintf(stderr, "init_gnutls_global failed\n");
2031
fprintf(stderr, "Mandos plugin mandos-client: "
2032
"init_gnutls_global failed\n");
1770
2033
exitcode = EX_UNAVAILABLE;
1771
2034
goto end;
1772
2035
} else {
1788
2051
}
1789
2052
1790
2053
if(not init_gpgme(pubkey, seckey, tempdir)){
1791
fprintf(stderr, "init_gpgme failed\n");
2054
fprintf(stderr, "Mandos plugin mandos-client: "
2055
"init_gpgme failed\n");
1792
2056
exitcode = EX_UNAVAILABLE;
1793
2057
goto end;
1794
2058
} else {
1804
2068
/* (Mainly meant for debugging) */
1805
2069
char *address = strrchr(connect_to, ':');
1806
2070
if(address == NULL){
1807
fprintf(stderr, "No colon in address\n");
2071
fprintf(stderr, "Mandos plugin mandos-client: "
2072
"No colon in address\n");
1808
2073
exitcode = EX_USAGE;
1809
2074
goto end;
1810
2075
}
1818
2083
tmpmax = strtoimax(address+1, &tmp, 10);
1819
2084
if(errno != 0 or tmp == address+1 or *tmp != '\0'
1820
2085
or tmpmax != (uint16_t)tmpmax){
1821
fprintf(stderr, "Bad port number\n");
2086
fprintf(stderr, "Mandos plugin mandos-client: "
2087
"Bad port number\n");
1822
2088
exitcode = EX_USAGE;
1823
2089
goto end;
1824
2090
}
1829
2095
1830
2096
port = (uint16_t)tmpmax;
1831
2097
*address = '\0';
1832
address = connect_to;
1833
2098
/* Colon in address indicates IPv6 */
1834
2099
int af;
1835
if(strchr(address, ':') != NULL){
2100
if(strchr(connect_to, ':') != NULL){
1836
2101
af = AF_INET6;
2102
/* Accept [] around IPv6 address - see RFC 5952 */
2103
if(connect_to[0] == '[' and address[-1] == ']')
2104
{
2105
connect_to++;
2106
address[-1] = '\0';
2107
}
1837
2108
} else {
1838
2109
af = AF_INET;
1839
2110
}
2111
address = connect_to;
1840
2112
1841
2113
if(quit_now){
1842
2114
goto end;
1843
2115
}
1844
2116
1845
2117
while(not quit_now){
1846
2118
ret = start_mandos_communication(address, port, if_index, af);
1847
2119
if(quit_now or ret == 0){
1848
2120
break;
1849
2121
}
1850
sleep((int)retry_interval or 1);
1851
};
1852
2122
if(debug){
2123
fprintf(stderr, "Mandos plugin mandos-client: "
2124
"Retrying in %d seconds\n", (int)retry_interval);
2125
}
2126
sleep((int)retry_interval);
2127
}
2128
1853
2129
if (not quit_now){
1854
2130
exitcode = EXIT_SUCCESS;
1855
2131
}
1856
2132
1857
2133
goto end;
1858
2134
}
1859
2135
1881
2157
1882
2158
/* Check if creating the Avahi server object succeeded */
1883
2159
if(mc.server == NULL){
1884
fprintf(stderr, "Failed to create Avahi server: %s\n",
2160
fprintf(stderr, "Mandos plugin mandos-client: "
2161
"Failed to create Avahi server: %s\n",
1885
2162
avahi_strerror(error));
1886
2163
exitcode = EX_UNAVAILABLE;
1887
2164
goto end;
1896
2173
AVAHI_PROTO_UNSPEC, "_mandos._tcp",
1897
2174
NULL, 0, browse_callback, NULL);
1898
2175
if(sb == NULL){
1899
fprintf(stderr, "Failed to create service browser: %s\n",
2176
fprintf(stderr, "Mandos plugin mandos-client: "
2177
"Failed to create service browser: %s\n",
1900
2178
avahi_strerror(avahi_server_errno(mc.server)));
1901
2179
exitcode = EX_UNAVAILABLE;
1902
2180
goto end;
1909
2187
/* Run the main loop */
1910
2188
1911
2189
if(debug){
1912
fprintf(stderr, "Starting Avahi loop search\n");
2190
fprintf(stderr, "Mandos plugin mandos-client: "
2191
"Starting Avahi loop search\n");
1913
2192
}
1914
2193
1915
2194
ret = avahi_loop_with_timeout(mc.simple_poll,
1916
2195
(int)(retry_interval * 1000));
1917
2196
if(debug){
1918
fprintf(stderr, "avahi_loop_with_timeout exited %s\n",
2197
fprintf(stderr, "Mandos plugin mandos-client: "
2198
"avahi_loop_with_timeout exited %s\n",
1919
2199
(ret == 0) ? "successfully" : "with error");
1920
2200
}
1921
2201
1922
2202
end:
1923
2203
1924
2204
if(debug){
1925
fprintf(stderr, "%s exiting\n", argv[0]);
2205
fprintf(stderr, "Mandos plugin mandos-client: "
2206
"%s exiting\n", argv[0]);
1926
2207
}
1927
2208
1928
2209
/* Cleanup things */
1956
2237
}
1957
2238
}
1958
2239
2240
/* XXX run network hooks "stop" here */
2241
1959
2242
/* Take down the network interface */
1960
2243
if(take_down_interface){
1961
2244
/* Re-raise priviliges */
1968
2251
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1969
2252
if(ret == -1){
1970
2253
perror_plus("ioctl SIOCGIFFLAGS");
1971
} else if(network.ifr_flags & IFF_UP) {
2254
} else if(network.ifr_flags & IFF_UP){
1972
2255
network.ifr_flags &= ~(short)IFF_UP; /* clear flag */
1973
2256
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1974
2257
if(ret == -1){
1992
2275
if(tempdir_created){
1993
2276
struct dirent **direntries = NULL;
1994
2277
struct dirent *direntry = NULL;
1995
ret = scandir(tempdir, &direntries, notdotentries, alphasort);
1996
if (ret > 0){
1997
for(int i = 0; i < ret; i++){
2278
int numentries = scandir(tempdir, &direntries, notdotentries,
2279
alphasort);
2280
if (numentries > 0){
2281
for(int i = 0; i < numentries; i++){
1998
2282
direntry = direntries[i];
1999
2283
char *fullname = NULL;
2000
2284
ret = asprintf(&fullname, "%s/%s", tempdir,
2005
2289
}
2006
2290
ret = remove(fullname);
2007
2291
if(ret == -1){
2008
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
2009
strerror(errno));
2292
fprintf(stderr, "Mandos plugin mandos-client: "
2293
"remove(\"%s\"): %s\n", fullname, strerror(errno));
2010
2294
}
2011
2295
free(fullname);
2012
2296
}
2013
2297
}
2014
2298
2015
/* need to be cleaned even if ret == 0 because man page doesn't
2016
specify */
2299
/* need to clean even if 0 because man page doesn't specify */
2017
2300
free(direntries);
2018
if (ret == -1){
2301
if (numentries == -1){
2019
2302
perror_plus("scandir");
2020
2303
}
2021
2304
ret = rmdir(tempdir);
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0