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- Committer: Teddy Hogeborn
- Date: 2009-01-06 05:08:37 UTC
- Revision ID: teddy@fukt.bsnet.se-20090106050837-111vhmg0s4kv424d
* debian/mandos-client.config: Removed.
* debian/mandos-client.postinst: Do not source
"/usr/share/debconf/confmodule".
* debian/mandos.config: Removed.
* debian/mandos.postinst: Do not source
"/usr/share/debconf/confmodule".
* debian/mandos-client.postinst: Do not source
"/usr/share/debconf/confmodule".
* debian/mandos.config: Removed.
* debian/mandos.postinst: Do not source
"/usr/share/debconf/confmodule".
- files removed:
- debian/watch
- files renamed:
- mandos-ctl => mandos-list
- files modified:
- Makefile
added
removed
plugins.d/mandos-client.c
1
1
/* -*- coding: utf-8 -*- */
2
2
/*
3
* Mandos-client - get and decrypt data from a Mandos server
3
* Mandos client - get and decrypt data from a Mandos server
4
4
*
5
5
* This program is partly derived from an example program for an Avahi
6
6
* service browser, downloaded from
36
36
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
37
37
38
38
#include <stdio.h> /* fprintf(), stderr, fwrite(),
39
stdout, ferror(), sscanf */
39
stdout, ferror() */
40
40
#include <stdint.h> /* uint16_t, uint32_t */
41
41
#include <stddef.h> /* NULL, size_t, ssize_t */
42
42
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
48
48
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
49
49
sockaddr_in6, PF_INET6,
50
50
SOCK_STREAM, INET6_ADDRSTRLEN,
51
uid_t, gid_t, open(), opendir(),
52
DIR */
51
uid_t, gid_t, open(), opendir(), DIR */
53
52
#include <sys/stat.h> /* open() */
54
53
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
55
54
struct in6_addr, inet_pton(),
56
55
connect() */
57
56
#include <fcntl.h> /* open() */
58
#include <dirent.h> /* opendir(), struct dirent, readdir()
59
*/
60
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
57
#include <dirent.h> /* opendir(), struct dirent, readdir() */
58
#include <inttypes.h> /* PRIu16 */
61
59
#include <assert.h> /* assert() */
62
60
#include <errno.h> /* perror(), errno */
63
#include <time.h> /* time(), nanosleep() */
61
#include <time.h> /* time() */
64
62
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
65
63
SIOCSIFFLAGS, if_indextoname(),
66
64
if_nametoindex(), IF_NAMESIZE */
69
67
getuid(), getgid(), setuid(),
70
68
setgid() */
71
69
#include <arpa/inet.h> /* inet_pton(), htons */
72
#include <iso646.h> /* not, and, or */
70
#include <iso646.h> /* not, and */
73
71
#include <argp.h> /* struct argp_option, error_t, struct
74
72
argp_state, struct argp,
75
73
argp_parse(), ARGP_KEY_ARG,
76
74
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
77
#include <sys/klog.h> /* klogctl() */
78
75
79
76
/* Avahi */
80
77
/* All Avahi types, constants and functions
93
90
gnutls_*
94
91
init_gnutls_session(),
95
92
GNUTLS_* */
96
#include <gnutls/openpgp.h>
97
/* gnutls_certificate_set_openpgp_key_file(),
93
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
98
94
GNUTLS_OPENPGP_FMT_BASE64 */
99
95
100
96
/* GPGME */
133
129
*/
134
130
size_t adjustbuffer(char **buffer, size_t buffer_length,
135
131
size_t buffer_capacity){
136
if(buffer_length + BUFFER_SIZE > buffer_capacity){
132
if (buffer_length + BUFFER_SIZE > buffer_capacity){
137
133
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
138
if(buffer == NULL){
134
if (buffer == NULL){
139
135
return 0;
140
136
}
141
137
buffer_capacity += BUFFER_SIZE;
160
156
int fd;
161
157
gpgme_data_t pgp_data;
162
158
163
fd = (int)TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
159
fd = TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
164
160
if(fd == -1){
165
161
perror("open");
166
162
return false;
167
163
}
168
164
169
165
rc = gpgme_data_new_from_fd(&pgp_data, fd);
170
if(rc != GPG_ERR_NO_ERROR){
166
if (rc != GPG_ERR_NO_ERROR){
171
167
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
172
168
gpgme_strsource(rc), gpgme_strerror(rc));
173
169
return false;
174
170
}
175
171
176
172
rc = gpgme_op_import(mc->ctx, pgp_data);
177
if(rc != GPG_ERR_NO_ERROR){
173
if (rc != GPG_ERR_NO_ERROR){
178
174
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
179
175
gpgme_strsource(rc), gpgme_strerror(rc));
180
176
return false;
181
177
}
182
178
183
ret = (int)TEMP_FAILURE_RETRY(close(fd));
179
ret = TEMP_FAILURE_RETRY(close(fd));
184
180
if(ret == -1){
185
181
perror("close");
186
182
}
188
184
return true;
189
185
}
190
186
191
if(debug){
187
if (debug){
192
188
fprintf(stderr, "Initialize gpgme\n");
193
189
}
194
190
195
191
/* Init GPGME */
196
192
gpgme_check_version(NULL);
197
193
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
198
if(rc != GPG_ERR_NO_ERROR){
194
if (rc != GPG_ERR_NO_ERROR){
199
195
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
200
196
gpgme_strsource(rc), gpgme_strerror(rc));
201
197
return false;
202
198
}
203
199
204
200
/* Set GPGME home directory for the OpenPGP engine only */
205
rc = gpgme_get_engine_info(&engine_info);
206
if(rc != GPG_ERR_NO_ERROR){
201
rc = gpgme_get_engine_info (&engine_info);
202
if (rc != GPG_ERR_NO_ERROR){
207
203
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
208
204
gpgme_strsource(rc), gpgme_strerror(rc));
209
205
return false;
223
219
224
220
/* Create new GPGME "context" */
225
221
rc = gpgme_new(&(mc->ctx));
226
if(rc != GPG_ERR_NO_ERROR){
222
if (rc != GPG_ERR_NO_ERROR){
227
223
fprintf(stderr, "bad gpgme_new: %s: %s\n",
228
224
gpgme_strsource(rc), gpgme_strerror(rc));
229
225
return false;
230
226
}
231
227
232
if(not import_key(pubkey) or not import_key(seckey)){
228
if (not import_key(pubkey) or not import_key(seckey)){
233
229
return false;
234
230
}
235
231
240
236
* Decrypt OpenPGP data.
241
237
* Returns -1 on error
242
238
*/
243
static ssize_t pgp_packet_decrypt(const mandos_context *mc,
244
const char *cryptotext,
245
size_t crypto_size,
246
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){
247
243
gpgme_data_t dh_crypto, dh_plain;
248
244
gpgme_error_t rc;
249
245
ssize_t ret;
250
246
size_t plaintext_capacity = 0;
251
247
ssize_t plaintext_length = 0;
252
248
253
if(debug){
249
if (debug){
254
250
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
255
251
}
256
252
257
253
/* Create new GPGME data buffer from memory cryptotext */
258
254
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
259
255
0);
260
if(rc != GPG_ERR_NO_ERROR){
256
if (rc != GPG_ERR_NO_ERROR){
261
257
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
262
258
gpgme_strsource(rc), gpgme_strerror(rc));
263
259
return -1;
265
261
266
262
/* Create new empty GPGME data buffer for the plaintext */
267
263
rc = gpgme_data_new(&dh_plain);
268
if(rc != GPG_ERR_NO_ERROR){
264
if (rc != GPG_ERR_NO_ERROR){
269
265
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
270
266
gpgme_strsource(rc), gpgme_strerror(rc));
271
267
gpgme_data_release(dh_crypto);
275
271
/* Decrypt data from the cryptotext data buffer to the plaintext
276
272
data buffer */
277
273
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
278
if(rc != GPG_ERR_NO_ERROR){
274
if (rc != GPG_ERR_NO_ERROR){
279
275
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
280
276
gpgme_strsource(rc), gpgme_strerror(rc));
281
277
plaintext_length = -1;
282
if(debug){
278
if (debug){
283
279
gpgme_decrypt_result_t result;
284
280
result = gpgme_op_decrypt_result(mc->ctx);
285
if(result == NULL){
281
if (result == NULL){
286
282
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
287
283
} else {
288
284
fprintf(stderr, "Unsupported algorithm: %s\n",
315
311
}
316
312
317
313
/* Seek back to the beginning of the GPGME plaintext data buffer */
318
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){
319
315
perror("gpgme_data_seek");
320
316
plaintext_length = -1;
321
317
goto decrypt_end;
326
322
plaintext_capacity = adjustbuffer(plaintext,
327
323
(size_t)plaintext_length,
328
324
plaintext_capacity);
329
if(plaintext_capacity == 0){
325
if (plaintext_capacity == 0){
330
326
perror("adjustbuffer");
331
327
plaintext_length = -1;
332
328
goto decrypt_end;
335
331
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
336
332
BUFFER_SIZE);
337
333
/* Print the data, if any */
338
if(ret == 0){
334
if (ret == 0){
339
335
/* EOF */
340
336
break;
341
337
}
365
361
return plaintext_length;
366
362
}
367
363
368
static const char * safer_gnutls_strerror(int value) {
369
const char *ret = gnutls_strerror(value); /* Spurious warning from
370
-Wunreachable-code */
371
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)
372
367
ret = "(unknown)";
373
368
return ret;
374
369
}
389
384
}
390
385
391
386
ret = gnutls_global_init();
392
if(ret != GNUTLS_E_SUCCESS) {
393
fprintf(stderr, "GnuTLS global_init: %s\n",
394
safer_gnutls_strerror(ret));
387
if (ret != GNUTLS_E_SUCCESS) {
388
fprintf (stderr, "GnuTLS global_init: %s\n",
389
safer_gnutls_strerror(ret));
395
390
return -1;
396
391
}
397
392
398
if(debug){
393
if (debug){
399
394
/* "Use a log level over 10 to enable all debugging options."
400
395
* - GnuTLS manual
401
396
*/
405
400
406
401
/* OpenPGP credentials */
407
402
gnutls_certificate_allocate_credentials(&mc->cred);
408
if(ret != GNUTLS_E_SUCCESS){
409
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
410
* from
411
* -Wunreachable-code
412
*/
413
safer_gnutls_strerror(ret));
414
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 ();
415
408
return -1;
416
409
}
417
410
424
417
ret = gnutls_certificate_set_openpgp_key_file
425
418
(mc->cred, pubkeyfilename, seckeyfilename,
426
419
GNUTLS_OPENPGP_FMT_BASE64);
427
if(ret != GNUTLS_E_SUCCESS) {
420
if (ret != GNUTLS_E_SUCCESS) {
428
421
fprintf(stderr,
429
422
"Error[%d] while reading the OpenPGP key pair ('%s',"
430
423
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
435
428
436
429
/* GnuTLS server initialization */
437
430
ret = gnutls_dh_params_init(&mc->dh_params);
438
if(ret != GNUTLS_E_SUCCESS) {
439
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
440
" %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));
441
434
goto globalfail;
442
435
}
443
436
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
444
if(ret != GNUTLS_E_SUCCESS) {
445
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
446
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));
447
440
goto globalfail;
448
441
}
449
442
464
457
int ret;
465
458
/* GnuTLS session creation */
466
459
ret = gnutls_init(session, GNUTLS_SERVER);
467
if(ret != GNUTLS_E_SUCCESS){
460
if (ret != GNUTLS_E_SUCCESS){
468
461
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
469
462
safer_gnutls_strerror(ret));
470
463
}
472
465
{
473
466
const char *err;
474
467
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
475
if(ret != GNUTLS_E_SUCCESS) {
468
if (ret != GNUTLS_E_SUCCESS) {
476
469
fprintf(stderr, "Syntax error at: %s\n", err);
477
470
fprintf(stderr, "GnuTLS error: %s\n",
478
471
safer_gnutls_strerror(ret));
479
gnutls_deinit(*session);
472
gnutls_deinit (*session);
480
473
return -1;
481
474
}
482
475
}
483
476
484
477
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
485
478
mc->cred);
486
if(ret != GNUTLS_E_SUCCESS) {
479
if (ret != GNUTLS_E_SUCCESS) {
487
480
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
488
481
safer_gnutls_strerror(ret));
489
gnutls_deinit(*session);
482
gnutls_deinit (*session);
490
483
return -1;
491
484
}
492
485
493
486
/* ignore client certificate if any. */
494
gnutls_certificate_server_set_request(*session,
495
GNUTLS_CERT_IGNORE);
487
gnutls_certificate_server_set_request (*session,
488
GNUTLS_CERT_IGNORE);
496
489
497
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
490
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
498
491
499
492
return 0;
500
493
}
508
501
AvahiIfIndex if_index,
509
502
mandos_context *mc){
510
503
int ret, tcp_sd;
511
ssize_t sret;
512
504
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
513
505
char *buffer = NULL;
514
506
char *decrypted_buffer;
520
512
char interface[IF_NAMESIZE];
521
513
gnutls_session_t session;
522
514
523
ret = init_gnutls_session(mc, &session);
524
if(ret != 0){
515
ret = init_gnutls_session (mc, &session);
516
if (ret != 0){
525
517
return -1;
526
518
}
527
519
549
541
/* It would be nice to have a way to detect if we were passed an
550
542
IPv4 address here. Now we assume an IPv6 address. */
551
543
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
552
if(ret < 0 ){
544
if (ret < 0 ){
553
545
perror("inet_pton");
554
546
return -1;
555
547
}
557
549
fprintf(stderr, "Bad address: %s\n", ip);
558
550
return -1;
559
551
}
560
to.in6.sin6_port = htons(port); /* Spurious warnings from
561
-Wconversion and
562
-Wunreachable-code */
552
to.in6.sin6_port = htons(port); /* Spurious warning */
563
553
564
554
to.in6.sin6_scope_id = (uint32_t)if_index;
565
555
578
568
}
579
569
580
570
ret = connect(tcp_sd, &to.in, sizeof(to));
581
if(ret < 0){
571
if (ret < 0){
582
572
perror("connect");
583
573
return -1;
584
574
}
585
575
586
576
const char *out = mandos_protocol_version;
587
577
written = 0;
588
while(true){
578
while (true){
589
579
size_t out_size = strlen(out);
590
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
580
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
591
581
out_size - written));
592
if(ret == -1){
582
if (ret == -1){
593
583
perror("write");
594
584
retval = -1;
595
585
goto mandos_end;
598
588
if(written < out_size){
599
589
continue;
600
590
} else {
601
if(out == mandos_protocol_version){
591
if (out == mandos_protocol_version){
602
592
written = 0;
603
593
out = "\r\n";
604
594
} else {
611
601
fprintf(stderr, "Establishing TLS session with %s\n", ip);
612
602
}
613
603
614
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
604
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
615
605
616
606
do{
617
ret = gnutls_handshake(session);
607
ret = gnutls_handshake (session);
618
608
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
619
609
620
if(ret != GNUTLS_E_SUCCESS){
610
if (ret != GNUTLS_E_SUCCESS){
621
611
if(debug){
622
612
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
623
gnutls_perror(ret);
613
gnutls_perror (ret);
624
614
}
625
615
retval = -1;
626
616
goto mandos_end;
636
626
while(true){
637
627
buffer_capacity = adjustbuffer(&buffer, buffer_length,
638
628
buffer_capacity);
639
if(buffer_capacity == 0){
629
if (buffer_capacity == 0){
640
630
perror("adjustbuffer");
641
631
retval = -1;
642
632
goto mandos_end;
643
633
}
644
634
645
sret = gnutls_record_recv(session, buffer+buffer_length,
646
BUFFER_SIZE);
647
if(sret == 0){
635
ret = gnutls_record_recv(session, buffer+buffer_length,
636
BUFFER_SIZE);
637
if (ret == 0){
648
638
break;
649
639
}
650
if(sret < 0){
651
switch(sret){
640
if (ret < 0){
641
switch(ret){
652
642
case GNUTLS_E_INTERRUPTED:
653
643
case GNUTLS_E_AGAIN:
654
644
break;
655
645
case GNUTLS_E_REHANDSHAKE:
656
646
do{
657
ret = gnutls_handshake(session);
647
ret = gnutls_handshake (session);
658
648
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
659
if(ret < 0){
649
if (ret < 0){
660
650
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
661
gnutls_perror(ret);
651
gnutls_perror (ret);
662
652
retval = -1;
663
653
goto mandos_end;
664
654
}
667
657
fprintf(stderr, "Unknown error while reading data from"
668
658
" encrypted session with Mandos server\n");
669
659
retval = -1;
670
gnutls_bye(session, GNUTLS_SHUT_RDWR);
660
gnutls_bye (session, GNUTLS_SHUT_RDWR);
671
661
goto mandos_end;
672
662
}
673
663
} else {
674
buffer_length += (size_t) sret;
664
buffer_length += (size_t) ret;
675
665
}
676
666
}
677
667
679
669
fprintf(stderr, "Closing TLS session\n");
680
670
}
681
671
682
gnutls_bye(session, GNUTLS_SHUT_RDWR);
672
gnutls_bye (session, GNUTLS_SHUT_RDWR);
683
673
684
if(buffer_length > 0){
674
if (buffer_length > 0){
685
675
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
686
676
buffer_length,
687
677
&decrypted_buffer);
688
if(decrypted_buffer_size >= 0){
678
if (decrypted_buffer_size >= 0){
689
679
written = 0;
690
680
while(written < (size_t) decrypted_buffer_size){
691
ret = (int)fwrite(decrypted_buffer + written, 1,
692
(size_t)decrypted_buffer_size - written,
693
stdout);
681
ret = (int)fwrite (decrypted_buffer + written, 1,
682
(size_t)decrypted_buffer_size - written,
683
stdout);
694
684
if(ret == 0 and ferror(stdout)){
695
685
if(debug){
696
686
fprintf(stderr, "Error writing encrypted data: %s\n",
713
703
714
704
mandos_end:
715
705
free(buffer);
716
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
706
ret = TEMP_FAILURE_RETRY(close(tcp_sd));
717
707
if(ret == -1){
718
708
perror("close");
719
709
}
720
gnutls_deinit(session);
710
gnutls_deinit (session);
721
711
return retval;
722
712
}
723
713
741
731
/* Called whenever a service has been resolved successfully or
742
732
timed out */
743
733
744
switch(event) {
734
switch (event) {
745
735
default:
746
736
case AVAHI_RESOLVER_FAILURE:
747
737
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
755
745
avahi_address_snprint(ip, sizeof(ip), address);
756
746
if(debug){
757
747
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
758
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
759
ip, (intmax_t)interface, port);
748
PRIu16 ") on port %d\n", name, host_name, ip,
749
interface, port);
760
750
}
761
751
int ret = start_mandos_communication(ip, port, interface, mc);
762
if(ret == 0){
752
if (ret == 0){
763
753
avahi_simple_poll_quit(mc->simple_poll);
764
754
}
765
755
}
783
773
/* Called whenever a new services becomes available on the LAN or
784
774
is removed from the LAN */
785
775
786
switch(event) {
776
switch (event) {
787
777
default:
788
778
case AVAHI_BROWSER_FAILURE:
789
779
798
788
the callback function is called the Avahi server will free the
799
789
resolver for us. */
800
790
801
if(!(avahi_s_service_resolver_new(mc->server, interface,
791
if (!(avahi_s_service_resolver_new(mc->server, interface,
802
792
protocol, name, type, domain,
803
793
AVAHI_PROTO_INET6, 0,
804
794
resolve_callback, mc)))
822
812
AvahiSServiceBrowser *sb = NULL;
823
813
int error;
824
814
int ret;
825
intmax_t tmpmax;
826
int numchars;
827
815
int exitcode = EXIT_SUCCESS;
828
816
const char *interface = "eth0";
829
817
struct ifreq network;
841
829
":!CTYPE-X.509:+CTYPE-OPENPGP" };
842
830
bool gnutls_initalized = false;
843
831
bool gpgme_initalized = false;
844
double delay = 2.5;
845
832
846
833
{
847
834
struct argp_option options[] = {
873
860
.arg = "STRING",
874
861
.doc = "GnuTLS priority string for the TLS handshake",
875
862
.group = 1 },
876
{ .name = "delay", .key = 131,
877
.arg = "SECONDS",
878
.doc = "Maximum delay to wait for interface startup",
879
.group = 2 },
880
863
{ .name = NULL }
881
864
};
882
865
883
error_t parse_opt(int key, char *arg,
884
struct argp_state *state) {
885
switch(key) {
866
error_t parse_opt (int key, char *arg,
867
struct argp_state *state) {
868
/* Get the INPUT argument from `argp_parse', which we know is
869
a pointer to our plugin list pointer. */
870
switch (key) {
886
871
case 128: /* --debug */
887
872
debug = true;
888
873
break;
899
884
pubkey = arg;
900
885
break;
901
886
case 129: /* --dh-bits */
902
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
903
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
904
or arg[numchars] != '\0'){
905
fprintf(stderr, "Bad number of DH bits\n");
887
errno = 0;
888
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
889
if (errno){
890
perror("strtol");
906
891
exit(EXIT_FAILURE);
907
892
}
908
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
909
893
break;
910
894
case 130: /* --priority */
911
895
mc.priority = arg;
912
896
break;
913
case 131: /* --delay */
914
ret = sscanf(arg, "%lf%n", &delay, &numchars);
915
if(ret < 1 or arg[numchars] != '\0'){
916
fprintf(stderr, "Bad delay\n");
917
exit(EXIT_FAILURE);
918
}
919
break;
920
897
case ARGP_KEY_ARG:
921
argp_usage(state);
898
argp_usage (state);
922
899
case ARGP_KEY_END:
923
900
break;
924
901
default:
931
908
.args_doc = "",
932
909
.doc = "Mandos client -- Get and decrypt"
933
910
" passwords from a Mandos server" };
934
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
935
if(ret == ARGP_ERR_UNKNOWN){
911
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
912
if (ret == ARGP_ERR_UNKNOWN){
936
913
fprintf(stderr, "Unknown error while parsing arguments\n");
937
914
exitcode = EXIT_FAILURE;
938
915
goto end;
941
918
942
919
/* If the interface is down, bring it up */
943
920
{
944
// Lower kernel loglevel to KERN_NOTICE to avoid
945
// KERN_INFO messages to mess up the prompt
946
ret = klogctl(8, NULL, 5);
947
if(ret == -1){
948
perror("klogctl");
949
}
950
951
921
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
952
922
if(sd < 0) {
953
923
perror("socket");
954
924
exitcode = EXIT_FAILURE;
955
ret = klogctl(7, NULL, 0);
956
if(ret == -1){
957
perror("klogctl");
958
}
959
925
goto end;
960
926
}
961
927
strcpy(network.ifr_name, interface);
962
928
ret = ioctl(sd, SIOCGIFFLAGS, &network);
963
929
if(ret == -1){
964
930
perror("ioctl SIOCGIFFLAGS");
965
ret = klogctl(7, NULL, 0);
966
if(ret == -1){
967
perror("klogctl");
968
}
969
931
exitcode = EXIT_FAILURE;
970
932
goto end;
971
933
}
975
937
if(ret == -1){
976
938
perror("ioctl SIOCSIFFLAGS");
977
939
exitcode = EXIT_FAILURE;
978
ret = klogctl(7, NULL, 0);
979
if(ret == -1){
980
perror("klogctl");
981
}
982
940
goto end;
983
941
}
984
942
}
985
// sleep checking until interface is running
986
for(int i=0; i < delay * 4; i++){
987
ret = ioctl(sd, SIOCGIFFLAGS, &network);
988
if(ret == -1){
989
perror("ioctl SIOCGIFFLAGS");
990
} else if(network.ifr_flags & IFF_RUNNING){
991
break;
992
}
993
struct timespec sleeptime = { .tv_nsec = 250000000 };
994
nanosleep(&sleeptime, NULL);
995
}
996
ret = (int)TEMP_FAILURE_RETRY(close(sd));
943
ret = TEMP_FAILURE_RETRY(close(sd));
997
944
if(ret == -1){
998
945
perror("close");
999
946
}
1000
// Restores kernel loglevel to default
1001
ret = klogctl(7, NULL, 0);
1002
if(ret == -1){
1003
perror("klogctl");
1004
}
1005
947
}
1006
948
1007
949
uid = getuid();
1008
950
gid = getgid();
1009
951
1010
952
ret = setuid(uid);
1011
if(ret == -1){
953
if (ret == -1){
1012
954
perror("setuid");
1013
955
}
1014
956
1015
957
setgid(gid);
1016
if(ret == -1){
958
if (ret == -1){
1017
959
perror("setgid");
1018
960
}
1019
961
1020
962
ret = init_gnutls_global(&mc, pubkey, seckey);
1021
if(ret == -1){
963
if (ret == -1){
1022
964
fprintf(stderr, "init_gnutls_global failed\n");
1023
965
exitcode = EXIT_FAILURE;
1024
966
goto end;
1055
997
exitcode = EXIT_FAILURE;
1056
998
goto end;
1057
999
}
1058
uint16_t port;
1059
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1060
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1061
or address[numchars+1] != '\0'){
1062
fprintf(stderr, "Bad port number\n");
1000
errno = 0;
1001
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
1002
if(errno){
1003
perror("Bad port number");
1063
1004
exitcode = EXIT_FAILURE;
1064
1005
goto end;
1065
1006
}
1066
port = (uint16_t)tmpmax;
1067
1007
*address = '\0';
1068
1008
address = connect_to;
1069
1009
ret = start_mandos_communication(address, port, if_index, &mc);
1075
1015
goto end;
1076
1016
}
1077
1017
1078
if(not debug){
1018
if (not debug){
1079
1019
avahi_set_log_function(empty_log);
1080
1020
}
1081
1021
1084
1024
1085
1025
/* Allocate main Avahi loop object */
1086
1026
mc.simple_poll = avahi_simple_poll_new();
1087
if(mc.simple_poll == NULL) {
1027
if (mc.simple_poll == NULL) {
1088
1028
fprintf(stderr, "Avahi: Failed to create simple poll"
1089
1029
" object.\n");
1090
1030
exitcode = EXIT_FAILURE;
1110
1050
}
1111
1051
1112
1052
/* Check if creating the Avahi server object succeeded */
1113
if(mc.server == NULL) {
1053
if (mc.server == NULL) {
1114
1054
fprintf(stderr, "Failed to create Avahi server: %s\n",
1115
1055
avahi_strerror(error));
1116
1056
exitcode = EXIT_FAILURE;
1122
1062
AVAHI_PROTO_INET6,
1123
1063
"_mandos._tcp", NULL, 0,
1124
1064
browse_callback, &mc);
1125
if(sb == NULL) {
1065
if (sb == NULL) {
1126
1066
fprintf(stderr, "Failed to create service browser: %s\n",
1127
1067
avahi_strerror(avahi_server_errno(mc.server)));
1128
1068
exitcode = EXIT_FAILURE;
1131
1071
1132
1072
/* Run the main loop */
1133
1073
1134
if(debug){
1074
if (debug){
1135
1075
fprintf(stderr, "Starting Avahi loop search\n");
1136
1076
}
1137
1077
1138
1078
avahi_simple_poll_loop(mc.simple_poll);
1139
1079
1140
1080
end:
1141
1081
1142
if(debug){
1082
if (debug){
1143
1083
fprintf(stderr, "%s exiting\n", argv[0]);
1144
1084
}
1145
1085
1146
1086
/* Cleanup things */
1147
if(sb != NULL)
1087
if (sb != NULL)
1148
1088
avahi_s_service_browser_free(sb);
1149
1089
1150
if(mc.server != NULL)
1090
if (mc.server != NULL)
1151
1091
avahi_server_free(mc.server);
1152
1092
1153
if(mc.simple_poll != NULL)
1093
if (mc.simple_poll != NULL)
1154
1094
avahi_simple_poll_free(mc.simple_poll);
1155
1095
1156
if(gnutls_initalized){
1096
if (gnutls_initalized){
1157
1097
gnutls_certificate_free_credentials(mc.cred);
1158
gnutls_global_deinit();
1098
gnutls_global_deinit ();
1159
1099
gnutls_dh_params_deinit(mc.dh_params);
1160
1100
}
1161
1101
1169
1109
struct dirent *direntry;
1170
1110
d = opendir(tempdir);
1171
1111
if(d == NULL){
1172
if(errno != ENOENT){
1173
perror("opendir");
1174
}
1112
perror("opendir");
1175
1113
} else {
1176
1114
while(true){
1177
1115
direntry = readdir(d);
1178
1116
if(direntry == NULL){
1179
1117
break;
1180
1118
}
1181
if(direntry->d_type == DT_REG){
1119
if (direntry->d_type == DT_REG){
1182
1120
char *fullname = NULL;
1183
1121
ret = asprintf(&fullname, "%s/%s", tempdir,
1184
1122
direntry->d_name);
1197
1135
closedir(d);
1198
1136
}
1199
1137
ret = rmdir(tempdir);
1200
if(ret == -1 and errno != ENOENT){
1138
if(ret == -1){
1201
1139
perror("rmdir");
1202
1140
}
1203
1141
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0