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- Committer: Teddy Hogeborn
- Date: 2009-01-10 06:00:50 UTC
- Revision ID: teddy@fukt.bsnet.se-20090110060050-6v5y342fit0233pg
* plugins.d/askpass-fifo.c: Fix name in header.
* plugins.d/mandos-client.c: - '' -
* plugins.d/password-prompt.c: - '' -
* plugins.d/splashy.c: - '' -
* plugins.d/usplash.c: - '' -
* plugins.d/mandos-client.c: - '' -
* plugins.d/password-prompt.c: - '' -
* plugins.d/splashy.c: - '' -
* plugins.d/usplash.c: - '' -
- files removed:
- debian/watch
- files renamed:
- mandos-ctl => mandos-list
- files modified:
- INSTALL
added
removed
plugins.d/mandos-client.c
36
36
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
37
37
38
38
#include <stdio.h> /* fprintf(), stderr, fwrite(),
39
stdout, ferror(), sscanf(),
40
remove() */
39
stdout, ferror() */
41
40
#include <stdint.h> /* uint16_t, uint32_t */
42
41
#include <stddef.h> /* NULL, size_t, ssize_t */
43
42
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
49
48
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
50
49
sockaddr_in6, PF_INET6,
51
50
SOCK_STREAM, INET6_ADDRSTRLEN,
52
uid_t, gid_t, open(), opendir(),
53
DIR */
51
uid_t, gid_t, open(), opendir(), DIR */
54
52
#include <sys/stat.h> /* open() */
55
53
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
56
54
struct in6_addr, inet_pton(),
57
55
connect() */
58
56
#include <fcntl.h> /* open() */
59
#include <dirent.h> /* opendir(), struct dirent, readdir()
60
*/
61
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
57
#include <dirent.h> /* opendir(), struct dirent, readdir() */
58
#include <inttypes.h> /* PRIu16 */
62
59
#include <assert.h> /* assert() */
63
60
#include <errno.h> /* perror(), errno */
64
#include <time.h> /* nanosleep(), time() */
61
#include <time.h> /* time() */
65
62
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
66
63
SIOCSIFFLAGS, if_indextoname(),
67
64
if_nametoindex(), IF_NAMESIZE */
70
67
getuid(), getgid(), setuid(),
71
68
setgid() */
72
69
#include <arpa/inet.h> /* inet_pton(), htons */
73
#include <iso646.h> /* not, and, or */
70
#include <iso646.h> /* not, and */
74
71
#include <argp.h> /* struct argp_option, error_t, struct
75
72
argp_state, struct argp,
76
73
argp_parse(), ARGP_KEY_ARG,
77
74
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
78
#include <sys/klog.h> /* klogctl() */
79
75
80
76
/* Avahi */
81
77
/* All Avahi types, constants and functions
94
90
gnutls_*
95
91
init_gnutls_session(),
96
92
GNUTLS_* */
97
#include <gnutls/openpgp.h>
98
/* gnutls_certificate_set_openpgp_key_file(),
93
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
99
94
GNUTLS_OPENPGP_FMT_BASE64 */
100
95
101
96
/* GPGME */
134
129
*/
135
130
size_t adjustbuffer(char **buffer, size_t buffer_length,
136
131
size_t buffer_capacity){
137
if(buffer_length + BUFFER_SIZE > buffer_capacity){
132
if (buffer_length + BUFFER_SIZE > buffer_capacity){
138
133
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
139
if(buffer == NULL){
134
if (buffer == NULL){
140
135
return 0;
141
136
}
142
137
buffer_capacity += BUFFER_SIZE;
155
150
156
151
157
152
/*
158
* Helper function to insert pub and seckey to the engine keyring.
153
* Helper function to insert pub and seckey to the enigne keyring.
159
154
*/
160
155
bool import_key(const char *filename){
161
156
int fd;
168
163
}
169
164
170
165
rc = gpgme_data_new_from_fd(&pgp_data, fd);
171
if(rc != GPG_ERR_NO_ERROR){
166
if (rc != GPG_ERR_NO_ERROR){
172
167
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
173
168
gpgme_strsource(rc), gpgme_strerror(rc));
174
169
return false;
175
170
}
176
171
177
172
rc = gpgme_op_import(mc->ctx, pgp_data);
178
if(rc != GPG_ERR_NO_ERROR){
173
if (rc != GPG_ERR_NO_ERROR){
179
174
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
180
175
gpgme_strsource(rc), gpgme_strerror(rc));
181
176
return false;
189
184
return true;
190
185
}
191
186
192
if(debug){
187
if (debug){
193
188
fprintf(stderr, "Initialize gpgme\n");
194
189
}
195
190
196
191
/* Init GPGME */
197
192
gpgme_check_version(NULL);
198
193
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
199
if(rc != GPG_ERR_NO_ERROR){
194
if (rc != GPG_ERR_NO_ERROR){
200
195
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
201
196
gpgme_strsource(rc), gpgme_strerror(rc));
202
197
return false;
203
198
}
204
199
205
200
/* Set GPGME home directory for the OpenPGP engine only */
206
rc = gpgme_get_engine_info(&engine_info);
207
if(rc != GPG_ERR_NO_ERROR){
201
rc = gpgme_get_engine_info (&engine_info);
202
if (rc != GPG_ERR_NO_ERROR){
208
203
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
209
204
gpgme_strsource(rc), gpgme_strerror(rc));
210
205
return false;
224
219
225
220
/* Create new GPGME "context" */
226
221
rc = gpgme_new(&(mc->ctx));
227
if(rc != GPG_ERR_NO_ERROR){
222
if (rc != GPG_ERR_NO_ERROR){
228
223
fprintf(stderr, "bad gpgme_new: %s: %s\n",
229
224
gpgme_strsource(rc), gpgme_strerror(rc));
230
225
return false;
231
226
}
232
227
233
if(not import_key(pubkey) or not import_key(seckey)){
228
if (not import_key(pubkey) or not import_key(seckey)){
234
229
return false;
235
230
}
236
231
241
236
* Decrypt OpenPGP data.
242
237
* Returns -1 on error
243
238
*/
244
static ssize_t pgp_packet_decrypt(const mandos_context *mc,
245
const char *cryptotext,
246
size_t crypto_size,
247
char **plaintext){
239
static ssize_t pgp_packet_decrypt (const mandos_context *mc,
240
const char *cryptotext,
241
size_t crypto_size,
242
char **plaintext){
248
243
gpgme_data_t dh_crypto, dh_plain;
249
244
gpgme_error_t rc;
250
245
ssize_t ret;
251
246
size_t plaintext_capacity = 0;
252
247
ssize_t plaintext_length = 0;
253
248
254
if(debug){
249
if (debug){
255
250
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
256
251
}
257
252
258
253
/* Create new GPGME data buffer from memory cryptotext */
259
254
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
260
255
0);
261
if(rc != GPG_ERR_NO_ERROR){
256
if (rc != GPG_ERR_NO_ERROR){
262
257
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
263
258
gpgme_strsource(rc), gpgme_strerror(rc));
264
259
return -1;
266
261
267
262
/* Create new empty GPGME data buffer for the plaintext */
268
263
rc = gpgme_data_new(&dh_plain);
269
if(rc != GPG_ERR_NO_ERROR){
264
if (rc != GPG_ERR_NO_ERROR){
270
265
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
271
266
gpgme_strsource(rc), gpgme_strerror(rc));
272
267
gpgme_data_release(dh_crypto);
276
271
/* Decrypt data from the cryptotext data buffer to the plaintext
277
272
data buffer */
278
273
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
279
if(rc != GPG_ERR_NO_ERROR){
274
if (rc != GPG_ERR_NO_ERROR){
280
275
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
281
276
gpgme_strsource(rc), gpgme_strerror(rc));
282
277
plaintext_length = -1;
283
if(debug){
278
if (debug){
284
279
gpgme_decrypt_result_t result;
285
280
result = gpgme_op_decrypt_result(mc->ctx);
286
if(result == NULL){
281
if (result == NULL){
287
282
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
288
283
} else {
289
284
fprintf(stderr, "Unsupported algorithm: %s\n",
316
311
}
317
312
318
313
/* Seek back to the beginning of the GPGME plaintext data buffer */
319
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
314
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
320
315
perror("gpgme_data_seek");
321
316
plaintext_length = -1;
322
317
goto decrypt_end;
327
322
plaintext_capacity = adjustbuffer(plaintext,
328
323
(size_t)plaintext_length,
329
324
plaintext_capacity);
330
if(plaintext_capacity == 0){
325
if (plaintext_capacity == 0){
331
326
perror("adjustbuffer");
332
327
plaintext_length = -1;
333
328
goto decrypt_end;
336
331
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
337
332
BUFFER_SIZE);
338
333
/* Print the data, if any */
339
if(ret == 0){
334
if (ret == 0){
340
335
/* EOF */
341
336
break;
342
337
}
366
361
return plaintext_length;
367
362
}
368
363
369
static const char * safer_gnutls_strerror(int value) {
370
const char *ret = gnutls_strerror(value); /* Spurious warning from
371
-Wunreachable-code */
372
if(ret == NULL)
364
static const char * safer_gnutls_strerror (int value) {
365
const char *ret = gnutls_strerror (value); /* Spurious warning */
366
if (ret == NULL)
373
367
ret = "(unknown)";
374
368
return ret;
375
369
}
390
384
}
391
385
392
386
ret = gnutls_global_init();
393
if(ret != GNUTLS_E_SUCCESS) {
394
fprintf(stderr, "GnuTLS global_init: %s\n",
395
safer_gnutls_strerror(ret));
387
if (ret != GNUTLS_E_SUCCESS) {
388
fprintf (stderr, "GnuTLS global_init: %s\n",
389
safer_gnutls_strerror(ret));
396
390
return -1;
397
391
}
398
392
399
if(debug){
393
if (debug){
400
394
/* "Use a log level over 10 to enable all debugging options."
401
395
* - GnuTLS manual
402
396
*/
406
400
407
401
/* OpenPGP credentials */
408
402
gnutls_certificate_allocate_credentials(&mc->cred);
409
if(ret != GNUTLS_E_SUCCESS){
410
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
411
* from
412
* -Wunreachable-code
413
*/
414
safer_gnutls_strerror(ret));
415
gnutls_global_deinit();
403
if (ret != GNUTLS_E_SUCCESS){
404
fprintf (stderr, "GnuTLS memory error: %s\n", /* Spurious
405
warning */
406
safer_gnutls_strerror(ret));
407
gnutls_global_deinit ();
416
408
return -1;
417
409
}
418
410
425
417
ret = gnutls_certificate_set_openpgp_key_file
426
418
(mc->cred, pubkeyfilename, seckeyfilename,
427
419
GNUTLS_OPENPGP_FMT_BASE64);
428
if(ret != GNUTLS_E_SUCCESS) {
420
if (ret != GNUTLS_E_SUCCESS) {
429
421
fprintf(stderr,
430
422
"Error[%d] while reading the OpenPGP key pair ('%s',"
431
423
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
436
428
437
429
/* GnuTLS server initialization */
438
430
ret = gnutls_dh_params_init(&mc->dh_params);
439
if(ret != GNUTLS_E_SUCCESS) {
440
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
441
" %s\n", safer_gnutls_strerror(ret));
431
if (ret != GNUTLS_E_SUCCESS) {
432
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
433
" %s\n", safer_gnutls_strerror(ret));
442
434
goto globalfail;
443
435
}
444
436
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
445
if(ret != GNUTLS_E_SUCCESS) {
446
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
447
safer_gnutls_strerror(ret));
437
if (ret != GNUTLS_E_SUCCESS) {
438
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
439
safer_gnutls_strerror(ret));
448
440
goto globalfail;
449
441
}
450
442
465
457
int ret;
466
458
/* GnuTLS session creation */
467
459
ret = gnutls_init(session, GNUTLS_SERVER);
468
if(ret != GNUTLS_E_SUCCESS){
460
if (ret != GNUTLS_E_SUCCESS){
469
461
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
470
462
safer_gnutls_strerror(ret));
471
463
}
473
465
{
474
466
const char *err;
475
467
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
476
if(ret != GNUTLS_E_SUCCESS) {
468
if (ret != GNUTLS_E_SUCCESS) {
477
469
fprintf(stderr, "Syntax error at: %s\n", err);
478
470
fprintf(stderr, "GnuTLS error: %s\n",
479
471
safer_gnutls_strerror(ret));
480
gnutls_deinit(*session);
472
gnutls_deinit (*session);
481
473
return -1;
482
474
}
483
475
}
484
476
485
477
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
486
478
mc->cred);
487
if(ret != GNUTLS_E_SUCCESS) {
479
if (ret != GNUTLS_E_SUCCESS) {
488
480
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
489
481
safer_gnutls_strerror(ret));
490
gnutls_deinit(*session);
482
gnutls_deinit (*session);
491
483
return -1;
492
484
}
493
485
494
486
/* ignore client certificate if any. */
495
gnutls_certificate_server_set_request(*session,
496
GNUTLS_CERT_IGNORE);
487
gnutls_certificate_server_set_request (*session,
488
GNUTLS_CERT_IGNORE);
497
489
498
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
490
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
499
491
500
492
return 0;
501
493
}
521
513
char interface[IF_NAMESIZE];
522
514
gnutls_session_t session;
523
515
524
ret = init_gnutls_session(mc, &session);
525
if(ret != 0){
516
ret = init_gnutls_session (mc, &session);
517
if (ret != 0){
526
518
return -1;
527
519
}
528
520
550
542
/* It would be nice to have a way to detect if we were passed an
551
543
IPv4 address here. Now we assume an IPv6 address. */
552
544
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
553
if(ret < 0 ){
545
if (ret < 0 ){
554
546
perror("inet_pton");
555
547
return -1;
556
548
}
558
550
fprintf(stderr, "Bad address: %s\n", ip);
559
551
return -1;
560
552
}
561
to.in6.sin6_port = htons(port); /* Spurious warnings from
562
-Wconversion and
563
-Wunreachable-code */
553
to.in6.sin6_port = htons(port); /* Spurious warning */
564
554
565
555
to.in6.sin6_scope_id = (uint32_t)if_index;
566
556
579
569
}
580
570
581
571
ret = connect(tcp_sd, &to.in, sizeof(to));
582
if(ret < 0){
572
if (ret < 0){
583
573
perror("connect");
584
574
return -1;
585
575
}
586
576
587
577
const char *out = mandos_protocol_version;
588
578
written = 0;
589
while(true){
579
while (true){
590
580
size_t out_size = strlen(out);
591
581
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
592
582
out_size - written));
593
if(ret == -1){
583
if (ret == -1){
594
584
perror("write");
595
585
retval = -1;
596
586
goto mandos_end;
599
589
if(written < out_size){
600
590
continue;
601
591
} else {
602
if(out == mandos_protocol_version){
592
if (out == mandos_protocol_version){
603
593
written = 0;
604
594
out = "\r\n";
605
595
} else {
612
602
fprintf(stderr, "Establishing TLS session with %s\n", ip);
613
603
}
614
604
615
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
605
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
616
606
617
607
do{
618
ret = gnutls_handshake(session);
608
ret = gnutls_handshake (session);
619
609
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
620
610
621
if(ret != GNUTLS_E_SUCCESS){
611
if (ret != GNUTLS_E_SUCCESS){
622
612
if(debug){
623
613
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
624
gnutls_perror(ret);
614
gnutls_perror (ret);
625
615
}
626
616
retval = -1;
627
617
goto mandos_end;
637
627
while(true){
638
628
buffer_capacity = adjustbuffer(&buffer, buffer_length,
639
629
buffer_capacity);
640
if(buffer_capacity == 0){
630
if (buffer_capacity == 0){
641
631
perror("adjustbuffer");
642
632
retval = -1;
643
633
goto mandos_end;
645
635
646
636
sret = gnutls_record_recv(session, buffer+buffer_length,
647
637
BUFFER_SIZE);
648
if(sret == 0){
638
if (sret == 0){
649
639
break;
650
640
}
651
if(sret < 0){
641
if (sret < 0){
652
642
switch(sret){
653
643
case GNUTLS_E_INTERRUPTED:
654
644
case GNUTLS_E_AGAIN:
655
645
break;
656
646
case GNUTLS_E_REHANDSHAKE:
657
647
do{
658
ret = gnutls_handshake(session);
648
ret = gnutls_handshake (session);
659
649
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
660
if(ret < 0){
650
if (ret < 0){
661
651
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
662
gnutls_perror(ret);
652
gnutls_perror (ret);
663
653
retval = -1;
664
654
goto mandos_end;
665
655
}
668
658
fprintf(stderr, "Unknown error while reading data from"
669
659
" encrypted session with Mandos server\n");
670
660
retval = -1;
671
gnutls_bye(session, GNUTLS_SHUT_RDWR);
661
gnutls_bye (session, GNUTLS_SHUT_RDWR);
672
662
goto mandos_end;
673
663
}
674
664
} else {
680
670
fprintf(stderr, "Closing TLS session\n");
681
671
}
682
672
683
gnutls_bye(session, GNUTLS_SHUT_RDWR);
673
gnutls_bye (session, GNUTLS_SHUT_RDWR);
684
674
685
if(buffer_length > 0){
675
if (buffer_length > 0){
686
676
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
687
677
buffer_length,
688
678
&decrypted_buffer);
689
if(decrypted_buffer_size >= 0){
679
if (decrypted_buffer_size >= 0){
690
680
written = 0;
691
681
while(written < (size_t) decrypted_buffer_size){
692
ret = (int)fwrite(decrypted_buffer + written, 1,
693
(size_t)decrypted_buffer_size - written,
694
stdout);
682
ret = (int)fwrite (decrypted_buffer + written, 1,
683
(size_t)decrypted_buffer_size - written,
684
stdout);
695
685
if(ret == 0 and ferror(stdout)){
696
686
if(debug){
697
687
fprintf(stderr, "Error writing encrypted data: %s\n",
718
708
if(ret == -1){
719
709
perror("close");
720
710
}
721
gnutls_deinit(session);
711
gnutls_deinit (session);
722
712
return retval;
723
713
}
724
714
742
732
/* Called whenever a service has been resolved successfully or
743
733
timed out */
744
734
745
switch(event) {
735
switch (event) {
746
736
default:
747
737
case AVAHI_RESOLVER_FAILURE:
748
738
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
756
746
avahi_address_snprint(ip, sizeof(ip), address);
757
747
if(debug){
758
748
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
759
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
760
ip, (intmax_t)interface, port);
749
PRIu16 ") on port %d\n", name, host_name, ip,
750
interface, port);
761
751
}
762
752
int ret = start_mandos_communication(ip, port, interface, mc);
763
if(ret == 0){
753
if (ret == 0){
764
754
avahi_simple_poll_quit(mc->simple_poll);
765
755
}
766
756
}
784
774
/* Called whenever a new services becomes available on the LAN or
785
775
is removed from the LAN */
786
776
787
switch(event) {
777
switch (event) {
788
778
default:
789
779
case AVAHI_BROWSER_FAILURE:
790
780
799
789
the callback function is called the Avahi server will free the
800
790
resolver for us. */
801
791
802
if(!(avahi_s_service_resolver_new(mc->server, interface,
792
if (!(avahi_s_service_resolver_new(mc->server, interface,
803
793
protocol, name, type, domain,
804
794
AVAHI_PROTO_INET6, 0,
805
795
resolve_callback, mc)))
823
813
AvahiSServiceBrowser *sb = NULL;
824
814
int error;
825
815
int ret;
826
intmax_t tmpmax;
827
int numchars;
828
816
int exitcode = EXIT_SUCCESS;
829
817
const char *interface = "eth0";
830
818
struct ifreq network;
833
821
gid_t gid;
834
822
char *connect_to = NULL;
835
823
char tempdir[] = "/tmp/mandosXXXXXX";
836
bool tempdir_created = false;
837
824
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
838
825
const char *seckey = PATHDIR "/" SECKEY;
839
826
const char *pubkey = PATHDIR "/" PUBKEY;
841
828
mandos_context mc = { .simple_poll = NULL, .server = NULL,
842
829
.dh_bits = 1024, .priority = "SECURE256"
843
830
":!CTYPE-X.509:+CTYPE-OPENPGP" };
844
bool gnutls_initialized = false;
845
bool gpgme_initialized = false;
846
double delay = 2.5;
831
bool gnutls_initalized = false;
832
bool gpgme_initalized = false;
847
833
848
834
{
849
835
struct argp_option options[] = {
875
861
.arg = "STRING",
876
862
.doc = "GnuTLS priority string for the TLS handshake",
877
863
.group = 1 },
878
{ .name = "delay", .key = 131,
879
.arg = "SECONDS",
880
.doc = "Maximum delay to wait for interface startup",
881
.group = 2 },
882
864
{ .name = NULL }
883
865
};
884
866
885
error_t parse_opt(int key, char *arg,
886
struct argp_state *state) {
887
switch(key) {
867
error_t parse_opt (int key, char *arg,
868
struct argp_state *state) {
869
/* Get the INPUT argument from `argp_parse', which we know is
870
a pointer to our plugin list pointer. */
871
switch (key) {
888
872
case 128: /* --debug */
889
873
debug = true;
890
874
break;
901
885
pubkey = arg;
902
886
break;
903
887
case 129: /* --dh-bits */
904
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
905
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
906
or arg[numchars] != '\0'){
907
fprintf(stderr, "Bad number of DH bits\n");
888
errno = 0;
889
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
890
if (errno){
891
perror("strtol");
908
892
exit(EXIT_FAILURE);
909
893
}
910
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
911
894
break;
912
895
case 130: /* --priority */
913
896
mc.priority = arg;
914
897
break;
915
case 131: /* --delay */
916
ret = sscanf(arg, "%lf%n", &delay, &numchars);
917
if(ret < 1 or arg[numchars] != '\0'){
918
fprintf(stderr, "Bad delay\n");
919
exit(EXIT_FAILURE);
920
}
921
break;
922
898
case ARGP_KEY_ARG:
923
argp_usage(state);
899
argp_usage (state);
924
900
case ARGP_KEY_END:
925
901
break;
926
902
default:
933
909
.args_doc = "",
934
910
.doc = "Mandos client -- Get and decrypt"
935
911
" passwords from a Mandos server" };
936
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
937
if(ret == ARGP_ERR_UNKNOWN){
912
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
913
if (ret == ARGP_ERR_UNKNOWN){
938
914
fprintf(stderr, "Unknown error while parsing arguments\n");
939
915
exitcode = EXIT_FAILURE;
940
916
goto end;
943
919
944
920
/* If the interface is down, bring it up */
945
921
{
946
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
947
messages to mess up the prompt */
948
ret = klogctl(8, NULL, 5);
949
if(ret == -1){
950
perror("klogctl");
951
}
952
953
922
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
954
923
if(sd < 0) {
955
924
perror("socket");
956
925
exitcode = EXIT_FAILURE;
957
ret = klogctl(7, NULL, 0);
958
if(ret == -1){
959
perror("klogctl");
960
}
961
926
goto end;
962
927
}
963
928
strcpy(network.ifr_name, interface);
964
929
ret = ioctl(sd, SIOCGIFFLAGS, &network);
965
930
if(ret == -1){
966
931
perror("ioctl SIOCGIFFLAGS");
967
ret = klogctl(7, NULL, 0);
968
if(ret == -1){
969
perror("klogctl");
970
}
971
932
exitcode = EXIT_FAILURE;
972
933
goto end;
973
934
}
977
938
if(ret == -1){
978
939
perror("ioctl SIOCSIFFLAGS");
979
940
exitcode = EXIT_FAILURE;
980
ret = klogctl(7, NULL, 0);
981
if(ret == -1){
982
perror("klogctl");
983
}
984
941
goto end;
985
942
}
986
943
}
987
/* sleep checking until interface is running */
988
for(int i=0; i < delay * 4; i++){
989
ret = ioctl(sd, SIOCGIFFLAGS, &network);
990
if(ret == -1){
991
perror("ioctl SIOCGIFFLAGS");
992
} else if(network.ifr_flags & IFF_RUNNING){
993
break;
994
}
995
struct timespec sleeptime = { .tv_nsec = 250000000 };
996
nanosleep(&sleeptime, NULL);
997
}
998
944
ret = (int)TEMP_FAILURE_RETRY(close(sd));
999
945
if(ret == -1){
1000
946
perror("close");
1001
947
}
1002
/* Restores kernel loglevel to default */
1003
ret = klogctl(7, NULL, 0);
1004
if(ret == -1){
1005
perror("klogctl");
1006
}
1007
948
}
1008
949
1009
950
uid = getuid();
1010
951
gid = getgid();
1011
952
953
ret = setuid(uid);
954
if (ret == -1){
955
perror("setuid");
956
}
957
1012
958
setgid(gid);
1013
if(ret == -1){
959
if (ret == -1){
1014
960
perror("setgid");
1015
961
}
1016
962
1017
ret = setuid(uid);
1018
if(ret == -1){
1019
perror("setuid");
1020
}
1021
1022
963
ret = init_gnutls_global(&mc, pubkey, seckey);
1023
if(ret == -1){
964
if (ret == -1){
1024
965
fprintf(stderr, "init_gnutls_global failed\n");
1025
966
exitcode = EXIT_FAILURE;
1026
967
goto end;
1027
968
} else {
1028
gnutls_initialized = true;
969
gnutls_initalized = true;
1029
970
}
1030
971
1031
972
if(mkdtemp(tempdir) == NULL){
1032
973
perror("mkdtemp");
974
tempdir[0] = '\0';
1033
975
goto end;
1034
976
}
1035
tempdir_created = true;
1036
977
1037
978
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
1038
fprintf(stderr, "init_gpgme failed\n");
979
fprintf(stderr, "gpgme_initalized failed\n");
1039
980
exitcode = EXIT_FAILURE;
1040
981
goto end;
1041
982
} else {
1042
gpgme_initialized = true;
983
gpgme_initalized = true;
1043
984
}
1044
985
1045
986
if_index = (AvahiIfIndex) if_nametoindex(interface);
1046
987
if(if_index == 0){
1047
988
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1048
exitcode = EXIT_FAILURE;
1049
goto end;
989
exit(EXIT_FAILURE);
1050
990
}
1051
991
1052
992
if(connect_to != NULL){
1058
998
exitcode = EXIT_FAILURE;
1059
999
goto end;
1060
1000
}
1061
uint16_t port;
1062
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1063
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1064
or address[numchars+1] != '\0'){
1065
fprintf(stderr, "Bad port number\n");
1001
errno = 0;
1002
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
1003
if(errno){
1004
perror("Bad port number");
1066
1005
exitcode = EXIT_FAILURE;
1067
1006
goto end;
1068
1007
}
1069
port = (uint16_t)tmpmax;
1070
1008
*address = '\0';
1071
1009
address = connect_to;
1072
1010
ret = start_mandos_communication(address, port, if_index, &mc);
1078
1016
goto end;
1079
1017
}
1080
1018
1081
if(not debug){
1019
if (not debug){
1082
1020
avahi_set_log_function(empty_log);
1083
1021
}
1084
1022
1087
1025
1088
1026
/* Allocate main Avahi loop object */
1089
1027
mc.simple_poll = avahi_simple_poll_new();
1090
if(mc.simple_poll == NULL) {
1028
if (mc.simple_poll == NULL) {
1091
1029
fprintf(stderr, "Avahi: Failed to create simple poll"
1092
1030
" object.\n");
1093
1031
exitcode = EXIT_FAILURE;
1113
1051
}
1114
1052
1115
1053
/* Check if creating the Avahi server object succeeded */
1116
if(mc.server == NULL) {
1054
if (mc.server == NULL) {
1117
1055
fprintf(stderr, "Failed to create Avahi server: %s\n",
1118
1056
avahi_strerror(error));
1119
1057
exitcode = EXIT_FAILURE;
1125
1063
AVAHI_PROTO_INET6,
1126
1064
"_mandos._tcp", NULL, 0,
1127
1065
browse_callback, &mc);
1128
if(sb == NULL) {
1066
if (sb == NULL) {
1129
1067
fprintf(stderr, "Failed to create service browser: %s\n",
1130
1068
avahi_strerror(avahi_server_errno(mc.server)));
1131
1069
exitcode = EXIT_FAILURE;
1134
1072
1135
1073
/* Run the main loop */
1136
1074
1137
if(debug){
1075
if (debug){
1138
1076
fprintf(stderr, "Starting Avahi loop search\n");
1139
1077
}
1140
1078
1141
1079
avahi_simple_poll_loop(mc.simple_poll);
1142
1080
1143
1081
end:
1144
1082
1145
if(debug){
1083
if (debug){
1146
1084
fprintf(stderr, "%s exiting\n", argv[0]);
1147
1085
}
1148
1086
1149
1087
/* Cleanup things */
1150
if(sb != NULL)
1088
if (sb != NULL)
1151
1089
avahi_s_service_browser_free(sb);
1152
1090
1153
if(mc.server != NULL)
1091
if (mc.server != NULL)
1154
1092
avahi_server_free(mc.server);
1155
1093
1156
if(mc.simple_poll != NULL)
1094
if (mc.simple_poll != NULL)
1157
1095
avahi_simple_poll_free(mc.simple_poll);
1158
1096
1159
if(gnutls_initialized){
1097
if (gnutls_initalized){
1160
1098
gnutls_certificate_free_credentials(mc.cred);
1161
gnutls_global_deinit();
1099
gnutls_global_deinit ();
1162
1100
gnutls_dh_params_deinit(mc.dh_params);
1163
1101
}
1164
1102
1165
if(gpgme_initialized){
1103
if(gpgme_initalized){
1166
1104
gpgme_release(mc.ctx);
1167
1105
}
1168
1106
1169
1107
/* Removes the temp directory used by GPGME */
1170
if(tempdir_created){
1108
if(tempdir[0] != '\0'){
1171
1109
DIR *d;
1172
1110
struct dirent *direntry;
1173
1111
d = opendir(tempdir);
1174
1112
if(d == NULL){
1175
if(errno != ENOENT){
1176
perror("opendir");
1177
}
1113
perror("opendir");
1178
1114
} else {
1179
1115
while(true){
1180
1116
direntry = readdir(d);
1181
1117
if(direntry == NULL){
1182
1118
break;
1183
1119
}
1184
/* Skip "." and ".." */
1185
if(direntry->d_name[0] == '.'
1186
and (direntry->d_name[1] == '\0'
1187
or (direntry->d_name[1] == '.'
1188
and direntry->d_name[2] == '\0'))){
1189
continue;
1190
}
1191
char *fullname = NULL;
1192
ret = asprintf(&fullname, "%s/%s", tempdir,
1193
direntry->d_name);
1194
if(ret < 0){
1195
perror("asprintf");
1196
continue;
1197
}
1198
ret = remove(fullname);
1199
if(ret == -1){
1200
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1201
strerror(errno));
1202
}
1203
free(fullname);
1120
if (direntry->d_type == DT_REG){
1121
char *fullname = NULL;
1122
ret = asprintf(&fullname, "%s/%s", tempdir,
1123
direntry->d_name);
1124
if(ret < 0){
1125
perror("asprintf");
1126
continue;
1127
}
1128
ret = unlink(fullname);
1129
if(ret == -1){
1130
fprintf(stderr, "unlink(\"%s\"): %s",
1131
fullname, strerror(errno));
1132
}
1133
free(fullname);
1134
}
1204
1135
}
1205
1136
closedir(d);
1206
1137
}
1207
1138
ret = rmdir(tempdir);
1208
if(ret == -1 and errno != ENOENT){
1139
if(ret == -1){
1209
1140
perror("rmdir");
1210
1141
}
1211
1142
}
1212
1143
1213
1144
return exitcode;
1214
1145
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0