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- Committer: Teddy Hogeborn
- Date: 2008-08-10 02:01:04 UTC
- mfrom: (24.1.38 mandos)
- Revision ID: teddy@fukt.bsnet.se-20080810020104-s49hp25rfx8gmw2e
* mandos (main): Use program name in --version output.
- files added:
- network-protocol.txt
- files removed:
- .bzrignore
- files renamed:
- plugin-runner.c => mandos-client.c
- plugin-runner.xml => mandos-client.xml
- files modified:
- Makefile
added
removed
plugins.d/password-request.c
32
32
#define _LARGEFILE_SOURCE
33
33
#define _FILE_OFFSET_BITS 64
34
34
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
36
36
37
#include <stdio.h> /* fprintf(), stderr, fwrite(),
38
stdout, ferror() */
37
#include <stdio.h> /* fprintf(), stderr, fwrite(), stdout,
38
ferror() */
39
39
#include <stdint.h> /* uint16_t, uint32_t */
40
40
#include <stddef.h> /* NULL, size_t, ssize_t */
41
41
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
42
42
srand() */
43
43
#include <stdbool.h> /* bool, true */
44
44
#include <string.h> /* memset(), strcmp(), strlen(),
45
strerror(), asprintf(), strcpy() */
45
strerror(), memcpy(), strcpy() */
46
46
#include <sys/ioctl.h> /* ioctl */
47
#include <net/if.h> /* ifreq, SIOCGIFFLAGS, SIOCSIFFLAGS,
48
IFF_UP */
47
49
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
48
50
sockaddr_in6, PF_INET6,
49
51
SOCK_STREAM, INET6_ADDRSTRLEN,
50
uid_t, gid_t, open(), opendir(), DIR */
51
#include <sys/stat.h> /* open() */
52
uid_t, gid_t */
52
53
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
53
54
struct in6_addr, inet_pton(),
54
55
connect() */
55
#include <fcntl.h> /* open() */
56
#include <dirent.h> /* opendir(), struct dirent, readdir() */
57
#include <inttypes.h> /* PRIu16 */
58
56
#include <assert.h> /* assert() */
59
57
#include <errno.h> /* perror(), errno */
60
58
#include <time.h> /* time() */
61
59
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
62
60
SIOCSIFFLAGS, if_indextoname(),
63
61
if_nametoindex(), IF_NAMESIZE */
64
#include <netinet/in.h>
65
62
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
66
63
getuid(), getgid(), setuid(),
67
64
setgid() */
65
#include <netinet/in.h>
68
66
#include <arpa/inet.h> /* inet_pton(), htons */
69
67
#include <iso646.h> /* not, and */
70
68
#include <argp.h> /* struct argp_option, error_t, struct
84
82
#include <avahi-common/error.h>
85
83
86
84
/* GnuTLS */
87
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
88
functions:
85
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and functions
89
86
gnutls_*
90
87
init_gnutls_session(),
91
88
GNUTLS_* */
93
90
GNUTLS_OPENPGP_FMT_BASE64 */
94
91
95
92
/* GPGME */
96
#include <gpgme.h> /* All GPGME types, constants and
97
functions:
93
#include <gpgme.h> /* All GPGME types, constants and functions
98
94
gpgme_*
99
95
GPGME_PROTOCOL_OpenPGP,
100
96
GPG_ERR_NO_* */
101
97
102
98
#define BUFFER_SIZE 256
103
99
104
/*
105
#define PATHDIR "/conf/conf.d/mandos"
106
*/
107
108
#define PATHDIR "/conf/conf.d/mandos"
109
#define SECKEY "seckey.txt"
110
#define PUBKEY "pupkey.txt"
111
112
100
bool debug = false;
101
static const char *keydir = "/conf/conf.d/mandos";
113
102
static const char mandos_protocol_version[] = "1";
114
103
const char *argp_program_version = "password-request 1.0";
115
104
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
122
111
unsigned int dh_bits;
123
112
gnutls_dh_params_t dh_params;
124
113
const char *priority;
125
gpgme_ctx_t ctx;
126
114
} mandos_context;
127
115
128
116
/*
143
131
}
144
132
145
133
/*
146
* Initialize GPGME.
134
* Decrypt OpenPGP data using keyrings in HOMEDIR.
135
* Returns -1 on error
147
136
*/
148
static bool init_gpgme(mandos_context *mc, const char *seckey,
149
const char *pubkey, const char *tempdir){
150
int ret;
137
static ssize_t pgp_packet_decrypt (const char *cryptotext,
138
size_t crypto_size,
139
char **plaintext,
140
const char *homedir){
141
gpgme_data_t dh_crypto, dh_plain;
142
gpgme_ctx_t ctx;
151
143
gpgme_error_t rc;
144
ssize_t ret;
145
size_t plaintext_capacity = 0;
146
ssize_t plaintext_length = 0;
152
147
gpgme_engine_info_t engine_info;
153
154
155
/*
156
* Helper function to insert pub and seckey to the enigne keyring.
157
*/
158
bool import_key(const char *filename){
159
int fd;
160
gpgme_data_t pgp_data;
161
162
fd = TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
163
if(fd == -1){
164
perror("open");
165
return false;
166
}
167
168
rc = gpgme_data_new_from_fd(&pgp_data, fd);
169
if (rc != GPG_ERR_NO_ERROR){
170
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
171
gpgme_strsource(rc), gpgme_strerror(rc));
172
return false;
173
}
174
175
rc = gpgme_op_import(mc->ctx, pgp_data);
176
if (rc != GPG_ERR_NO_ERROR){
177
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
178
gpgme_strsource(rc), gpgme_strerror(rc));
179
return false;
180
}
181
182
ret = TEMP_FAILURE_RETRY(close(fd));
183
if(ret == -1){
184
perror("close");
185
}
186
gpgme_data_release(pgp_data);
187
return true;
188
}
189
148
190
149
if (debug){
191
fprintf(stderr, "Initialize gpgme\n");
150
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
192
151
}
193
152
194
153
/* Init GPGME */
195
154
gpgme_check_version(NULL);
196
155
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
197
156
if (rc != GPG_ERR_NO_ERROR){
198
157
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
199
158
gpgme_strsource(rc), gpgme_strerror(rc));
200
return false;
159
return -1;
201
160
}
202
203
/* Set GPGME home directory for the OpenPGP engine only */
161
162
/* Set GPGME home directory for the OpenPGP engine only */
204
163
rc = gpgme_get_engine_info (&engine_info);
205
164
if (rc != GPG_ERR_NO_ERROR){
206
165
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
207
166
gpgme_strsource(rc), gpgme_strerror(rc));
208
return false;
167
return -1;
209
168
}
210
169
while(engine_info != NULL){
211
170
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
212
171
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
213
engine_info->file_name, tempdir);
172
engine_info->file_name, homedir);
214
173
break;
215
174
}
216
175
engine_info = engine_info->next;
217
176
}
218
177
if(engine_info == NULL){
219
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
220
return false;
221
}
222
223
/* Create new GPGME "context" */
224
rc = gpgme_new(&(mc->ctx));
225
if (rc != GPG_ERR_NO_ERROR){
226
fprintf(stderr, "bad gpgme_new: %s: %s\n",
227
gpgme_strsource(rc), gpgme_strerror(rc));
228
return false;
229
}
230
231
if (not import_key(pubkey) or not import_key(seckey)){
232
return false;
233
}
234
235
return true;
236
}
237
238
/*
239
* Decrypt OpenPGP data.
240
* Returns -1 on error
241
*/
242
static ssize_t pgp_packet_decrypt (const mandos_context *mc,
243
const char *cryptotext,
244
size_t crypto_size,
245
char **plaintext){
246
gpgme_data_t dh_crypto, dh_plain;
247
gpgme_error_t rc;
248
ssize_t ret;
249
size_t plaintext_capacity = 0;
250
ssize_t plaintext_length = 0;
251
252
if (debug){
253
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
178
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
179
return -1;
254
180
}
255
181
256
182
/* Create new GPGME data buffer from memory cryptotext */
271
197
return -1;
272
198
}
273
199
200
/* Create new GPGME "context" */
201
rc = gpgme_new(&ctx);
202
if (rc != GPG_ERR_NO_ERROR){
203
fprintf(stderr, "bad gpgme_new: %s: %s\n",
204
gpgme_strsource(rc), gpgme_strerror(rc));
205
plaintext_length = -1;
206
goto decrypt_end;
207
}
208
274
209
/* Decrypt data from the cryptotext data buffer to the plaintext
275
210
data buffer */
276
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
211
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
277
212
if (rc != GPG_ERR_NO_ERROR){
278
213
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
279
214
gpgme_strsource(rc), gpgme_strerror(rc));
280
215
plaintext_length = -1;
281
if (debug){
282
gpgme_decrypt_result_t result;
283
result = gpgme_op_decrypt_result(mc->ctx);
284
if (result == NULL){
285
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
286
} else {
287
fprintf(stderr, "Unsupported algorithm: %s\n",
288
result->unsupported_algorithm);
289
fprintf(stderr, "Wrong key usage: %u\n",
290
result->wrong_key_usage);
291
if(result->file_name != NULL){
292
fprintf(stderr, "File name: %s\n", result->file_name);
293
}
294
gpgme_recipient_t recipient;
295
recipient = result->recipients;
296
if(recipient){
297
while(recipient != NULL){
298
fprintf(stderr, "Public key algorithm: %s\n",
299
gpgme_pubkey_algo_name(recipient->pubkey_algo));
300
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
301
fprintf(stderr, "Secret key available: %s\n",
302
recipient->status == GPG_ERR_NO_SECKEY
303
? "No" : "Yes");
304
recipient = recipient->next;
305
}
306
}
307
}
308
}
309
216
goto decrypt_end;
310
217
}
311
218
313
220
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
314
221
}
315
222
223
if (debug){
224
gpgme_decrypt_result_t result;
225
result = gpgme_op_decrypt_result(ctx);
226
if (result == NULL){
227
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
228
} else {
229
fprintf(stderr, "Unsupported algorithm: %s\n",
230
result->unsupported_algorithm);
231
fprintf(stderr, "Wrong key usage: %d\n",
232
result->wrong_key_usage);
233
if(result->file_name != NULL){
234
fprintf(stderr, "File name: %s\n", result->file_name);
235
}
236
gpgme_recipient_t recipient;
237
recipient = result->recipients;
238
if(recipient){
239
while(recipient != NULL){
240
fprintf(stderr, "Public key algorithm: %s\n",
241
gpgme_pubkey_algo_name(recipient->pubkey_algo));
242
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
243
fprintf(stderr, "Secret key available: %s\n",
244
recipient->status == GPG_ERR_NO_SECKEY
245
? "No" : "Yes");
246
recipient = recipient->next;
247
}
248
}
249
}
250
}
251
316
252
/* Seek back to the beginning of the GPGME plaintext data buffer */
317
253
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
318
254
perror("pgpme_data_seek");
345
281
}
346
282
plaintext_length += ret;
347
283
}
348
284
349
285
if(debug){
350
286
fprintf(stderr, "Decrypted password is: ");
351
287
for(ssize_t i = 0; i < plaintext_length; i++){
365
301
}
366
302
367
303
static const char * safer_gnutls_strerror (int value) {
368
const char *ret = gnutls_strerror (value); /* Spurious warning */
304
const char *ret = gnutls_strerror (value);
369
305
if (ret == NULL)
370
306
ret = "(unknown)";
371
307
return ret;
378
314
}
379
315
380
316
static int init_gnutls_global(mandos_context *mc,
381
const char *pubkeyfilename,
382
const char *seckeyfilename){
317
const char *pubkeyfile,
318
const char *seckeyfile){
383
319
int ret;
384
320
385
321
if(debug){
404
340
/* OpenPGP credentials */
405
341
gnutls_certificate_allocate_credentials(&mc->cred);
406
342
if (ret != GNUTLS_E_SUCCESS){
407
fprintf (stderr, "GnuTLS memory error: %s\n", /* Spurious
408
warning */
343
fprintf (stderr, "GnuTLS memory error: %s\n",
409
344
safer_gnutls_strerror(ret));
410
345
gnutls_global_deinit ();
411
346
return -1;
412
347
}
413
348
414
349
if(debug){
415
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
416
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
417
seckeyfilename);
350
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
351
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
352
seckeyfile);
418
353
}
419
354
420
355
ret = gnutls_certificate_set_openpgp_key_file
421
(mc->cred, pubkeyfilename, seckeyfilename,
422
GNUTLS_OPENPGP_FMT_BASE64);
356
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
423
357
if (ret != GNUTLS_E_SUCCESS) {
424
358
fprintf(stderr,
425
359
"Error[%d] while reading the OpenPGP key pair ('%s',"
426
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
427
fprintf(stderr, "The GnuTLS error is: %s\n",
360
" '%s')\n", ret, pubkeyfile, seckeyfile);
361
fprintf(stdout, "The GnuTLS error is: %s\n",
428
362
safer_gnutls_strerror(ret));
429
363
goto globalfail;
430
364
}
444
378
}
445
379
446
380
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
447
381
448
382
return 0;
449
383
450
384
globalfail:
451
385
452
386
gnutls_certificate_free_credentials(mc->cred);
453
387
gnutls_global_deinit();
454
388
return -1;
389
455
390
}
456
391
457
392
static int init_gnutls_session(mandos_context *mc,
520
455
}
521
456
522
457
if(debug){
523
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
524
"\n", ip, port);
458
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
459
ip, port);
525
460
}
526
461
527
462
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
529
464
perror("socket");
530
465
return -1;
531
466
}
532
467
533
468
if(debug){
534
469
if(if_indextoname((unsigned int)if_index, interface) == NULL){
535
470
perror("if_indextoname");
538
473
fprintf(stderr, "Binding to interface %s\n", interface);
539
474
}
540
475
541
memset(&to, 0, sizeof(to));
476
memset(&to,0,sizeof(to)); /* Spurious warning */
542
477
to.in6.sin6_family = AF_INET6;
543
478
/* It would be nice to have a way to detect if we were passed an
544
479
IPv4 address here. Now we assume an IPv6 address. */
551
486
fprintf(stderr, "Bad address: %s\n", ip);
552
487
return -1;
553
488
}
554
to.in6.sin6_port = htons(port); /* Spurious warning */
489
to.in6.sin6_port = htons(port); /* Spurious warning */
555
490
556
491
to.in6.sin6_scope_id = (uint32_t)if_index;
557
492
558
493
if(debug){
559
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
560
port);
494
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
561
495
char addrstr[INET6_ADDRSTRLEN] = "";
562
496
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
563
497
sizeof(addrstr)) == NULL){
574
508
perror("connect");
575
509
return -1;
576
510
}
577
511
578
512
const char *out = mandos_protocol_version;
579
513
written = 0;
580
514
while (true){
598
532
}
599
533
}
600
534
}
601
535
602
536
if(debug){
603
537
fprintf(stderr, "Establishing TLS session with %s\n", ip);
604
538
}
605
539
606
540
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
607
541
608
542
do{
609
543
ret = gnutls_handshake (session);
610
544
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
624
558
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
625
559
ip);
626
560
}
627
561
628
562
while(true){
629
563
buffer_capacity = adjustbuffer(&buffer, buffer_length,
630
564
buffer_capacity);
674
608
gnutls_bye (session, GNUTLS_SHUT_RDWR);
675
609
676
610
if (buffer_length > 0){
677
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
611
decrypted_buffer_size = pgp_packet_decrypt(buffer,
678
612
buffer_length,
679
&decrypted_buffer);
613
&decrypted_buffer,
614
keydir);
680
615
if (decrypted_buffer_size >= 0){
681
616
written = 0;
682
617
while(written < (size_t) decrypted_buffer_size){
697
632
} else {
698
633
retval = -1;
699
634
}
700
} else {
701
retval = -1;
702
635
}
703
636
704
637
/* Shutdown procedure */
705
638
706
639
mandos_end:
707
640
free(buffer);
708
ret = TEMP_FAILURE_RETRY(close(tcp_sd));
709
if(ret == -1){
710
perror("close");
711
}
641
close(tcp_sd);
712
642
gnutls_deinit (session);
713
643
return retval;
714
644
}
728
658
flags,
729
659
void* userdata) {
730
660
mandos_context *mc = userdata;
731
assert(r);
661
assert(r); /* Spurious warning */
732
662
733
663
/* Called whenever a service has been resolved successfully or
734
664
timed out */
746
676
char ip[AVAHI_ADDRESS_STR_MAX];
747
677
avahi_address_snprint(ip, sizeof(ip), address);
748
678
if(debug){
749
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
750
PRIu16 ") on port %d\n", name, host_name, ip,
751
interface, port);
679
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
680
" port %d\n", name, host_name, ip, interface, port);
752
681
}
753
682
int ret = start_mandos_communication(ip, port, interface, mc);
754
683
if (ret == 0){
755
avahi_simple_poll_quit(mc->simple_poll);
684
exit(EXIT_SUCCESS);
756
685
}
757
686
}
758
687
}
770
699
flags,
771
700
void* userdata) {
772
701
mandos_context *mc = userdata;
773
assert(b);
702
assert(b); /* Spurious warning */
774
703
775
704
/* Called whenever a new services becomes available on the LAN or
776
705
is removed from the LAN */
810
739
}
811
740
}
812
741
742
/* Combines file name and path and returns the malloced new
743
string. some sane checks could/should be added */
744
static const char *combinepath(const char *first, const char *second){
745
size_t f_len = strlen(first);
746
size_t s_len = strlen(second);
747
char *tmp = malloc(f_len + s_len + 2);
748
if (tmp == NULL){
749
return NULL;
750
}
751
if(f_len > 0){
752
memcpy(tmp, first, f_len); /* Spurious warning */
753
}
754
tmp[f_len] = '/';
755
if(s_len > 0){
756
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
757
}
758
tmp[f_len + 1 + s_len] = '\0';
759
return tmp;
760
}
761
762
813
763
int main(int argc, char *argv[]){
814
764
AvahiSServiceBrowser *sb = NULL;
815
765
int error;
821
771
uid_t uid;
822
772
gid_t gid;
823
773
char *connect_to = NULL;
824
char tempdir[] = "/tmp/mandosXXXXXX";
825
774
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
826
const char *seckey = PATHDIR "/" SECKEY;
827
const char *pubkey = PATHDIR "/" PUBKEY;
828
775
const char *pubkeyfile = "pubkey.txt";
776
const char *seckeyfile = "seckey.txt";
829
777
mandos_context mc = { .simple_poll = NULL, .server = NULL,
830
.dh_bits = 1024, .priority = "SECURE256"
831
":!CTYPE-X.509:+CTYPE-OPENPGP" };
778
.dh_bits = 1024, .priority = "SECURE256"};
832
779
bool gnutls_initalized = false;
833
bool pgpme_initalized = false;
834
780
835
781
{
836
782
struct argp_option options[] = {
837
783
{ .name = "debug", .key = 128,
838
784
.doc = "Debug mode", .group = 3 },
839
785
{ .name = "connect", .key = 'c',
840
.arg = "ADDRESS:PORT",
841
.doc = "Connect directly to a specific Mandos server",
786
.arg = "IP",
787
.doc = "Connect directly to a sepcified mandos server",
842
788
.group = 1 },
843
789
{ .name = "interface", .key = 'i',
844
.arg = "NAME",
845
.doc = "Interface that will be used to search for Mandos"
846
" servers",
790
.arg = "INTERFACE",
791
.doc = "Interface that Avahi will conntect through",
792
.group = 1 },
793
{ .name = "keydir", .key = 'd',
794
.arg = "KEYDIR",
795
.doc = "Directory where the openpgp keyring is",
847
796
.group = 1 },
848
797
{ .name = "seckey", .key = 's',
849
.arg = "FILE",
850
.doc = "OpenPGP secret key file base name",
798
.arg = "SECKEY",
799
.doc = "Secret openpgp key for gnutls authentication",
851
800
.group = 1 },
852
801
{ .name = "pubkey", .key = 'p',
853
.arg = "FILE",
854
.doc = "OpenPGP public key file base name",
802
.arg = "PUBKEY",
803
.doc = "Public openpgp key for gnutls authentication",
855
804
.group = 2 },
856
805
{ .name = "dh-bits", .key = 129,
857
806
.arg = "BITS",
858
.doc = "Bit length of the prime number used in the"
859
" Diffie-Hellman key exchange",
807
.doc = "dh-bits to use in gnutls communication",
860
808
.group = 2 },
861
809
{ .name = "priority", .key = 130,
862
.arg = "STRING",
863
.doc = "GnuTLS priority string for the TLS handshake",
864
.group = 1 },
810
.arg = "PRIORITY",
811
.doc = "GNUTLS priority", .group = 1 },
865
812
{ .name = NULL }
866
813
};
814
867
815
868
816
error_t parse_opt (int key, char *arg,
869
817
struct argp_state *state) {
870
818
/* Get the INPUT argument from `argp_parse', which we know is
871
819
a pointer to our plugin list pointer. */
872
820
switch (key) {
873
case 128: /* --debug */
821
case 128:
874
822
debug = true;
875
823
break;
876
case 'c': /* --connect */
824
case 'c':
877
825
connect_to = arg;
878
826
break;
879
case 'i': /* --interface */
827
case 'i':
880
828
interface = arg;
881
829
break;
882
case 's': /* --seckey */
883
seckey = arg;
884
break;
885
case 'p': /* --pubkey */
886
pubkey = arg;
887
break;
888
case 129: /* --dh-bits */
830
case 'd':
831
keydir = arg;
832
break;
833
case 's':
834
seckeyfile = arg;
835
break;
836
case 'p':
837
pubkeyfile = arg;
838
break;
839
case 129:
889
840
errno = 0;
890
841
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
891
842
if (errno){
893
844
exit(EXIT_FAILURE);
894
845
}
895
846
break;
896
case 130: /* --priority */
847
case 130:
897
848
mc.priority = arg;
898
849
break;
899
850
case ARGP_KEY_ARG:
900
851
argp_usage (state);
901
case ARGP_KEY_END:
902
852
break;
853
case ARGP_KEY_END:
854
break;
903
855
default:
904
856
return ARGP_ERR_UNKNOWN;
905
857
}
906
858
return 0;
907
859
}
908
860
909
861
struct argp argp = { .options = options, .parser = parse_opt,
910
862
.args_doc = "",
911
863
.doc = "Mandos client -- Get and decrypt"
912
" passwords from a Mandos server" };
864
" passwords from mandos server" };
913
865
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
914
866
if (ret == ARGP_ERR_UNKNOWN){
915
fprintf(stderr, "Unknown error while parsing arguments\n");
867
fprintf(stderr, "Unkown error while parsing arguments\n");
916
868
exitcode = EXIT_FAILURE;
917
869
goto end;
918
870
}
919
871
}
872
873
pubkeyfile = combinepath(keydir, pubkeyfile);
874
if (pubkeyfile == NULL){
875
perror("combinepath");
876
exitcode = EXIT_FAILURE;
877
goto end;
878
}
920
879
921
ret = init_gnutls_global(&mc, pubkey, seckey);
880
seckeyfile = combinepath(keydir, seckeyfile);
881
if (seckeyfile == NULL){
882
perror("combinepath");
883
goto end;
884
}
885
886
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
922
887
if (ret == -1){
923
fprintf(stderr, "init_gnutls_global failed\n");
924
exitcode = EXIT_FAILURE;
888
fprintf(stderr, "init_gnutls_global\n");
925
889
goto end;
926
890
} else {
927
891
gnutls_initalized = true;
928
892
}
929
893
930
if(mkdtemp(tempdir) == NULL){
931
perror("mkdtemp");
932
tempdir[0] = '\0';
933
goto end;
934
}
935
936
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
937
fprintf(stderr, "pgpme_initalized failed\n");
938
exitcode = EXIT_FAILURE;
939
goto end;
940
} else {
941
pgpme_initalized = true;
942
}
943
944
/* If the interface is down, bring it up */
945
{
946
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
947
if(sd < 0) {
948
perror("socket");
949
exitcode = EXIT_FAILURE;
950
goto end;
951
}
952
strcpy(network.ifr_name, interface);
953
ret = ioctl(sd, SIOCGIFFLAGS, &network);
954
if(ret == -1){
955
perror("ioctl SIOCGIFFLAGS");
956
exitcode = EXIT_FAILURE;
957
goto end;
958
}
959
if((network.ifr_flags & IFF_UP) == 0){
960
network.ifr_flags |= IFF_UP;
961
ret = ioctl(sd, SIOCSIFFLAGS, &network);
962
if(ret == -1){
963
perror("ioctl SIOCSIFFLAGS");
964
exitcode = EXIT_FAILURE;
965
goto end;
966
}
967
}
968
ret = TEMP_FAILURE_RETRY(close(sd));
969
if(ret == -1){
970
perror("close");
971
}
972
}
973
974
894
uid = getuid();
975
895
gid = getgid();
976
896
977
897
ret = setuid(uid);
978
898
if (ret == -1){
979
899
perror("setuid");
1017
937
goto end;
1018
938
}
1019
939
940
/* If the interface is down, bring it up */
941
{
942
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
943
if(sd < 0) {
944
perror("socket");
945
exitcode = EXIT_FAILURE;
946
goto end;
947
}
948
strcpy(network.ifr_name, interface); /* Spurious warning */
949
ret = ioctl(sd, SIOCGIFFLAGS, &network);
950
if(ret == -1){
951
perror("ioctl SIOCGIFFLAGS");
952
exitcode = EXIT_FAILURE;
953
goto end;
954
}
955
if((network.ifr_flags & IFF_UP) == 0){
956
network.ifr_flags |= IFF_UP;
957
ret = ioctl(sd, SIOCSIFFLAGS, &network);
958
if(ret == -1){
959
perror("ioctl SIOCSIFFLAGS");
960
exitcode = EXIT_FAILURE;
961
goto end;
962
}
963
}
964
close(sd);
965
}
966
1020
967
if (not debug){
1021
968
avahi_set_log_function(empty_log);
1022
969
}
1032
979
exitcode = EXIT_FAILURE;
1033
980
goto end;
1034
981
}
1035
982
1036
983
{
1037
984
AvahiServerConfig config;
1038
985
/* Do not publish any local Zeroconf records */
1041
988
config.publish_addresses = 0;
1042
989
config.publish_workstation = 0;
1043
990
config.publish_domain = 0;
1044
991
1045
992
/* Allocate a new server */
1046
993
mc.server = avahi_server_new(avahi_simple_poll_get
1047
994
(mc.simple_poll), &config, NULL,
1048
995
NULL, &error);
1049
996
1050
997
/* Free the Avahi configuration data */
1051
998
avahi_server_config_free(&config);
1052
999
}
1072
1019
}
1073
1020
1074
1021
/* Run the main loop */
1075
1022
1076
1023
if (debug){
1077
1024
fprintf(stderr, "Starting Avahi loop search\n");
1078
1025
}
1080
1027
avahi_simple_poll_loop(mc.simple_poll);
1081
1028
1082
1029
end:
1083
1030
1084
1031
if (debug){
1085
1032
fprintf(stderr, "%s exiting\n", argv[0]);
1086
1033
}
1091
1038
1092
1039
if (mc.server != NULL)
1093
1040
avahi_server_free(mc.server);
1094
1041
1095
1042
if (mc.simple_poll != NULL)
1096
1043
avahi_simple_poll_free(mc.simple_poll);
1097
1044
free(pubkeyfile);
1045
free(seckeyfile);
1046
1098
1047
if (gnutls_initalized){
1099
1048
gnutls_certificate_free_credentials(mc.cred);
1100
1049
gnutls_global_deinit ();
1101
1050
}
1102
1103
if(pgpme_initalized){
1104
gpgme_release(mc.ctx);
1105
}
1106
1107
/* Removes the temp directory used by GPGME */
1108
if(tempdir[0] != '\0'){
1109
DIR *d;
1110
struct dirent *direntry;
1111
d = opendir(tempdir);
1112
if(d == NULL){
1113
perror("opendir");
1114
} else {
1115
while(true){
1116
direntry = readdir(d);
1117
if(direntry == NULL){
1118
break;
1119
}
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
}
1135
}
1136
}
1137
ret = rmdir(tempdir);
1138
if(ret == -1){
1139
perror("rmdir");
1140
}
1141
}
1142
1051
1143
1052
return exitcode;
1144
1053
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0