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- Committer: Teddy Hogeborn
- Date: 2008-08-11 07:41:40 UTC
- Revision ID: teddy@fukt.bsnet.se-20080811074140-3wrl2jux1s0jy5kk
* mandos-client.c (print_out_password): Strip trailing '\n'.
(main): Do not add trailing newline on fallback.
(main): Do not add trailing newline on fallback.
- 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 */
53
#include <inttypes.h> /* PRIu16 */
52
54
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
53
55
struct in6_addr, inet_pton(),
54
56
connect() */
55
#include <fcntl.h> /* open() */
56
#include <dirent.h> /* opendir(), struct dirent, readdir() */
57
#include <inttypes.h> /* PRIu16 */
58
57
#include <assert.h> /* assert() */
59
58
#include <errno.h> /* perror(), errno */
60
59
#include <time.h> /* time() */
61
60
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
62
61
SIOCSIFFLAGS, if_indextoname(),
63
62
if_nametoindex(), IF_NAMESIZE */
64
#include <netinet/in.h>
65
63
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
66
64
getuid(), getgid(), setuid(),
67
65
setgid() */
66
#include <netinet/in.h>
68
67
#include <arpa/inet.h> /* inet_pton(), htons */
69
68
#include <iso646.h> /* not, and */
70
69
#include <argp.h> /* struct argp_option, error_t, struct
84
83
#include <avahi-common/error.h>
85
84
86
85
/* GnuTLS */
87
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
88
functions:
86
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and functions
89
87
gnutls_*
90
88
init_gnutls_session(),
91
89
GNUTLS_* */
93
91
GNUTLS_OPENPGP_FMT_BASE64 */
94
92
95
93
/* GPGME */
96
#include <gpgme.h> /* All GPGME types, constants and
97
functions:
94
#include <gpgme.h> /* All GPGME types, constants and functions
98
95
gpgme_*
99
96
GPGME_PROTOCOL_OpenPGP,
100
97
GPG_ERR_NO_* */
101
98
102
99
#define BUFFER_SIZE 256
103
100
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
101
bool debug = false;
102
static const char *keydir = "/conf/conf.d/mandos";
113
103
static const char mandos_protocol_version[] = "1";
114
104
const char *argp_program_version = "password-request 1.0";
115
105
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
122
112
unsigned int dh_bits;
123
113
gnutls_dh_params_t dh_params;
124
114
const char *priority;
125
gpgme_ctx_t ctx;
126
115
} mandos_context;
127
116
128
117
/*
143
132
}
144
133
145
134
/*
146
* Initialize GPGME.
135
* Decrypt OpenPGP data using keyrings in HOMEDIR.
136
* Returns -1 on error
147
137
*/
148
static bool init_gpgme(mandos_context *mc, const char *seckey,
149
const char *pubkey, const char *tempdir){
150
int ret;
138
static ssize_t pgp_packet_decrypt (const char *cryptotext,
139
size_t crypto_size,
140
char **plaintext,
141
const char *homedir){
142
gpgme_data_t dh_crypto, dh_plain;
143
gpgme_ctx_t ctx;
151
144
gpgme_error_t rc;
145
ssize_t ret;
146
size_t plaintext_capacity = 0;
147
ssize_t plaintext_length = 0;
152
148
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
149
190
150
if (debug){
191
fprintf(stderr, "Initialize gpgme\n");
151
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
192
152
}
193
153
194
154
/* Init GPGME */
195
155
gpgme_check_version(NULL);
196
156
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
197
157
if (rc != GPG_ERR_NO_ERROR){
198
158
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
199
159
gpgme_strsource(rc), gpgme_strerror(rc));
200
return false;
160
return -1;
201
161
}
202
203
/* Set GPGME home directory for the OpenPGP engine only */
162
163
/* Set GPGME home directory for the OpenPGP engine only */
204
164
rc = gpgme_get_engine_info (&engine_info);
205
165
if (rc != GPG_ERR_NO_ERROR){
206
166
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
207
167
gpgme_strsource(rc), gpgme_strerror(rc));
208
return false;
168
return -1;
209
169
}
210
170
while(engine_info != NULL){
211
171
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
212
172
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
213
engine_info->file_name, tempdir);
173
engine_info->file_name, homedir);
214
174
break;
215
175
}
216
176
engine_info = engine_info->next;
217
177
}
218
178
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");
179
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
180
return -1;
254
181
}
255
182
256
183
/* Create new GPGME data buffer from memory cryptotext */
271
198
return -1;
272
199
}
273
200
201
/* Create new GPGME "context" */
202
rc = gpgme_new(&ctx);
203
if (rc != GPG_ERR_NO_ERROR){
204
fprintf(stderr, "bad gpgme_new: %s: %s\n",
205
gpgme_strsource(rc), gpgme_strerror(rc));
206
plaintext_length = -1;
207
goto decrypt_end;
208
}
209
274
210
/* Decrypt data from the cryptotext data buffer to the plaintext
275
211
data buffer */
276
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
212
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
277
213
if (rc != GPG_ERR_NO_ERROR){
278
214
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
279
215
gpgme_strsource(rc), gpgme_strerror(rc));
280
216
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
217
goto decrypt_end;
310
218
}
311
219
313
221
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
314
222
}
315
223
224
if (debug){
225
gpgme_decrypt_result_t result;
226
result = gpgme_op_decrypt_result(ctx);
227
if (result == NULL){
228
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
229
} else {
230
fprintf(stderr, "Unsupported algorithm: %s\n",
231
result->unsupported_algorithm);
232
fprintf(stderr, "Wrong key usage: %u\n",
233
result->wrong_key_usage);
234
if(result->file_name != NULL){
235
fprintf(stderr, "File name: %s\n", result->file_name);
236
}
237
gpgme_recipient_t recipient;
238
recipient = result->recipients;
239
if(recipient){
240
while(recipient != NULL){
241
fprintf(stderr, "Public key algorithm: %s\n",
242
gpgme_pubkey_algo_name(recipient->pubkey_algo));
243
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
244
fprintf(stderr, "Secret key available: %s\n",
245
recipient->status == GPG_ERR_NO_SECKEY
246
? "No" : "Yes");
247
recipient = recipient->next;
248
}
249
}
250
}
251
}
252
316
253
/* Seek back to the beginning of the GPGME plaintext data buffer */
317
254
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
318
255
perror("pgpme_data_seek");
345
282
}
346
283
plaintext_length += ret;
347
284
}
348
285
349
286
if(debug){
350
287
fprintf(stderr, "Decrypted password is: ");
351
288
for(ssize_t i = 0; i < plaintext_length; i++){
365
302
}
366
303
367
304
static const char * safer_gnutls_strerror (int value) {
368
const char *ret = gnutls_strerror (value); /* Spurious warning */
305
const char *ret = gnutls_strerror (value);
369
306
if (ret == NULL)
370
307
ret = "(unknown)";
371
308
return ret;
378
315
}
379
316
380
317
static int init_gnutls_global(mandos_context *mc,
381
const char *pubkeyfilename,
382
const char *seckeyfilename){
318
const char *pubkeyfile,
319
const char *seckeyfile){
383
320
int ret;
384
321
385
322
if(debug){
404
341
/* OpenPGP credentials */
405
342
gnutls_certificate_allocate_credentials(&mc->cred);
406
343
if (ret != GNUTLS_E_SUCCESS){
407
fprintf (stderr, "GnuTLS memory error: %s\n", /* Spurious
408
warning */
344
fprintf (stderr, "GnuTLS memory error: %s\n",
409
345
safer_gnutls_strerror(ret));
410
346
gnutls_global_deinit ();
411
347
return -1;
412
348
}
413
349
414
350
if(debug){
415
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
416
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
417
seckeyfilename);
351
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
352
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
353
seckeyfile);
418
354
}
419
355
420
356
ret = gnutls_certificate_set_openpgp_key_file
421
(mc->cred, pubkeyfilename, seckeyfilename,
422
GNUTLS_OPENPGP_FMT_BASE64);
357
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
423
358
if (ret != GNUTLS_E_SUCCESS) {
424
359
fprintf(stderr,
425
360
"Error[%d] while reading the OpenPGP key pair ('%s',"
426
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
427
fprintf(stderr, "The GnuTLS error is: %s\n",
361
" '%s')\n", ret, pubkeyfile, seckeyfile);
362
fprintf(stdout, "The GnuTLS error is: %s\n",
428
363
safer_gnutls_strerror(ret));
429
364
goto globalfail;
430
365
}
444
379
}
445
380
446
381
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
447
382
448
383
return 0;
449
384
450
385
globalfail:
451
386
452
387
gnutls_certificate_free_credentials(mc->cred);
453
388
gnutls_global_deinit();
454
389
return -1;
390
455
391
}
456
392
457
393
static int init_gnutls_session(mandos_context *mc,
529
465
perror("socket");
530
466
return -1;
531
467
}
532
468
533
469
if(debug){
534
470
if(if_indextoname((unsigned int)if_index, interface) == NULL){
535
471
perror("if_indextoname");
538
474
fprintf(stderr, "Binding to interface %s\n", interface);
539
475
}
540
476
541
memset(&to, 0, sizeof(to));
477
memset(&to,0,sizeof(to)); /* Spurious warning */
542
478
to.in6.sin6_family = AF_INET6;
543
479
/* It would be nice to have a way to detect if we were passed an
544
480
IPv4 address here. Now we assume an IPv6 address. */
551
487
fprintf(stderr, "Bad address: %s\n", ip);
552
488
return -1;
553
489
}
554
to.in6.sin6_port = htons(port); /* Spurious warning */
490
to.in6.sin6_port = htons(port); /* Spurious warning */
555
491
556
492
to.in6.sin6_scope_id = (uint32_t)if_index;
557
493
574
510
perror("connect");
575
511
return -1;
576
512
}
577
513
578
514
const char *out = mandos_protocol_version;
579
515
written = 0;
580
516
while (true){
598
534
}
599
535
}
600
536
}
601
537
602
538
if(debug){
603
539
fprintf(stderr, "Establishing TLS session with %s\n", ip);
604
540
}
605
541
606
542
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
607
543
608
544
do{
609
545
ret = gnutls_handshake (session);
610
546
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
624
560
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
625
561
ip);
626
562
}
627
563
628
564
while(true){
629
565
buffer_capacity = adjustbuffer(&buffer, buffer_length,
630
566
buffer_capacity);
674
610
gnutls_bye (session, GNUTLS_SHUT_RDWR);
675
611
676
612
if (buffer_length > 0){
677
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
613
decrypted_buffer_size = pgp_packet_decrypt(buffer,
678
614
buffer_length,
679
&decrypted_buffer);
615
&decrypted_buffer,
616
keydir);
680
617
if (decrypted_buffer_size >= 0){
681
618
written = 0;
682
619
while(written < (size_t) decrypted_buffer_size){
697
634
} else {
698
635
retval = -1;
699
636
}
700
} else {
701
retval = -1;
702
637
}
703
638
704
639
/* Shutdown procedure */
705
640
706
641
mandos_end:
707
642
free(buffer);
708
ret = TEMP_FAILURE_RETRY(close(tcp_sd));
709
if(ret == -1){
710
perror("close");
711
}
643
close(tcp_sd);
712
644
gnutls_deinit (session);
713
645
return retval;
714
646
}
728
660
flags,
729
661
void* userdata) {
730
662
mandos_context *mc = userdata;
731
assert(r);
663
assert(r); /* Spurious warning */
732
664
733
665
/* Called whenever a service has been resolved successfully or
734
666
timed out */
752
684
}
753
685
int ret = start_mandos_communication(ip, port, interface, mc);
754
686
if (ret == 0){
755
avahi_simple_poll_quit(mc->simple_poll);
687
exit(EXIT_SUCCESS);
756
688
}
757
689
}
758
690
}
770
702
flags,
771
703
void* userdata) {
772
704
mandos_context *mc = userdata;
773
assert(b);
705
assert(b); /* Spurious warning */
774
706
775
707
/* Called whenever a new services becomes available on the LAN or
776
708
is removed from the LAN */
810
742
}
811
743
}
812
744
745
/* Combines file name and path and returns the malloced new
746
string. some sane checks could/should be added */
747
static const char *combinepath(const char *first, const char *second){
748
size_t f_len = strlen(first);
749
size_t s_len = strlen(second);
750
char *tmp = malloc(f_len + s_len + 2);
751
if (tmp == NULL){
752
return NULL;
753
}
754
if(f_len > 0){
755
memcpy(tmp, first, f_len); /* Spurious warning */
756
}
757
tmp[f_len] = '/';
758
if(s_len > 0){
759
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
760
}
761
tmp[f_len + 1 + s_len] = '\0';
762
return tmp;
763
}
764
765
813
766
int main(int argc, char *argv[]){
814
767
AvahiSServiceBrowser *sb = NULL;
815
768
int error;
821
774
uid_t uid;
822
775
gid_t gid;
823
776
char *connect_to = NULL;
824
char tempdir[] = "/tmp/mandosXXXXXX";
825
777
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
826
const char *seckey = PATHDIR "/" SECKEY;
827
const char *pubkey = PATHDIR "/" PUBKEY;
828
778
const char *pubkeyfile = "pubkey.txt";
779
const char *seckeyfile = "seckey.txt";
829
780
mandos_context mc = { .simple_poll = NULL, .server = NULL,
830
.dh_bits = 1024, .priority = "SECURE256"
831
":!CTYPE-X.509:+CTYPE-OPENPGP" };
781
.dh_bits = 1024, .priority = "SECURE256"};
832
782
bool gnutls_initalized = false;
833
bool pgpme_initalized = false;
834
783
835
784
{
836
785
struct argp_option options[] = {
837
786
{ .name = "debug", .key = 128,
838
787
.doc = "Debug mode", .group = 3 },
839
788
{ .name = "connect", .key = 'c',
840
.arg = "ADDRESS:PORT",
841
.doc = "Connect directly to a specific Mandos server",
789
.arg = "IP",
790
.doc = "Connect directly to a sepcified mandos server",
842
791
.group = 1 },
843
792
{ .name = "interface", .key = 'i',
844
.arg = "NAME",
845
.doc = "Interface that will be used to search for Mandos"
846
" servers",
793
.arg = "INTERFACE",
794
.doc = "Interface that Avahi will conntect through",
795
.group = 1 },
796
{ .name = "keydir", .key = 'd',
797
.arg = "KEYDIR",
798
.doc = "Directory where the openpgp keyring is",
847
799
.group = 1 },
848
800
{ .name = "seckey", .key = 's',
849
.arg = "FILE",
850
.doc = "OpenPGP secret key file base name",
801
.arg = "SECKEY",
802
.doc = "Secret openpgp key for gnutls authentication",
851
803
.group = 1 },
852
804
{ .name = "pubkey", .key = 'p',
853
.arg = "FILE",
854
.doc = "OpenPGP public key file base name",
805
.arg = "PUBKEY",
806
.doc = "Public openpgp key for gnutls authentication",
855
807
.group = 2 },
856
808
{ .name = "dh-bits", .key = 129,
857
809
.arg = "BITS",
858
.doc = "Bit length of the prime number used in the"
859
" Diffie-Hellman key exchange",
810
.doc = "dh-bits to use in gnutls communication",
860
811
.group = 2 },
861
812
{ .name = "priority", .key = 130,
862
.arg = "STRING",
863
.doc = "GnuTLS priority string for the TLS handshake",
864
.group = 1 },
813
.arg = "PRIORITY",
814
.doc = "GNUTLS priority", .group = 1 },
865
815
{ .name = NULL }
866
816
};
817
867
818
868
819
error_t parse_opt (int key, char *arg,
869
820
struct argp_state *state) {
870
821
/* Get the INPUT argument from `argp_parse', which we know is
871
822
a pointer to our plugin list pointer. */
872
823
switch (key) {
873
case 128: /* --debug */
824
case 128:
874
825
debug = true;
875
826
break;
876
case 'c': /* --connect */
827
case 'c':
877
828
connect_to = arg;
878
829
break;
879
case 'i': /* --interface */
830
case 'i':
880
831
interface = arg;
881
832
break;
882
case 's': /* --seckey */
883
seckey = arg;
884
break;
885
case 'p': /* --pubkey */
886
pubkey = arg;
887
break;
888
case 129: /* --dh-bits */
833
case 'd':
834
keydir = arg;
835
break;
836
case 's':
837
seckeyfile = arg;
838
break;
839
case 'p':
840
pubkeyfile = arg;
841
break;
842
case 129:
889
843
errno = 0;
890
844
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
891
845
if (errno){
893
847
exit(EXIT_FAILURE);
894
848
}
895
849
break;
896
case 130: /* --priority */
850
case 130:
897
851
mc.priority = arg;
898
852
break;
899
853
case ARGP_KEY_ARG:
900
854
argp_usage (state);
901
case ARGP_KEY_END:
902
855
break;
856
case ARGP_KEY_END:
857
break;
903
858
default:
904
859
return ARGP_ERR_UNKNOWN;
905
860
}
906
861
return 0;
907
862
}
908
863
909
864
struct argp argp = { .options = options, .parser = parse_opt,
910
865
.args_doc = "",
911
866
.doc = "Mandos client -- Get and decrypt"
912
" passwords from a Mandos server" };
867
" passwords from mandos server" };
913
868
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
914
869
if (ret == ARGP_ERR_UNKNOWN){
915
fprintf(stderr, "Unknown error while parsing arguments\n");
870
fprintf(stderr, "Unkown error while parsing arguments\n");
916
871
exitcode = EXIT_FAILURE;
917
872
goto end;
918
873
}
919
874
}
875
876
pubkeyfile = combinepath(keydir, pubkeyfile);
877
if (pubkeyfile == NULL){
878
perror("combinepath");
879
exitcode = EXIT_FAILURE;
880
goto end;
881
}
920
882
921
ret = init_gnutls_global(&mc, pubkey, seckey);
883
seckeyfile = combinepath(keydir, seckeyfile);
884
if (seckeyfile == NULL){
885
perror("combinepath");
886
goto end;
887
}
888
889
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
922
890
if (ret == -1){
923
fprintf(stderr, "init_gnutls_global failed\n");
924
exitcode = EXIT_FAILURE;
891
fprintf(stderr, "init_gnutls_global\n");
925
892
goto end;
926
893
} else {
927
894
gnutls_initalized = true;
928
895
}
929
896
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
897
uid = getuid();
975
898
gid = getgid();
976
899
977
900
ret = setuid(uid);
978
901
if (ret == -1){
979
902
perror("setuid");
1017
940
goto end;
1018
941
}
1019
942
943
/* If the interface is down, bring it up */
944
{
945
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
946
if(sd < 0) {
947
perror("socket");
948
exitcode = EXIT_FAILURE;
949
goto end;
950
}
951
strcpy(network.ifr_name, interface); /* Spurious warning */
952
ret = ioctl(sd, SIOCGIFFLAGS, &network);
953
if(ret == -1){
954
perror("ioctl SIOCGIFFLAGS");
955
exitcode = EXIT_FAILURE;
956
goto end;
957
}
958
if((network.ifr_flags & IFF_UP) == 0){
959
network.ifr_flags |= IFF_UP;
960
ret = ioctl(sd, SIOCSIFFLAGS, &network);
961
if(ret == -1){
962
perror("ioctl SIOCSIFFLAGS");
963
exitcode = EXIT_FAILURE;
964
goto end;
965
}
966
}
967
close(sd);
968
}
969
1020
970
if (not debug){
1021
971
avahi_set_log_function(empty_log);
1022
972
}
1032
982
exitcode = EXIT_FAILURE;
1033
983
goto end;
1034
984
}
1035
985
1036
986
{
1037
987
AvahiServerConfig config;
1038
988
/* Do not publish any local Zeroconf records */
1041
991
config.publish_addresses = 0;
1042
992
config.publish_workstation = 0;
1043
993
config.publish_domain = 0;
1044
994
1045
995
/* Allocate a new server */
1046
996
mc.server = avahi_server_new(avahi_simple_poll_get
1047
997
(mc.simple_poll), &config, NULL,
1048
998
NULL, &error);
1049
999
1050
1000
/* Free the Avahi configuration data */
1051
1001
avahi_server_config_free(&config);
1052
1002
}
1072
1022
}
1073
1023
1074
1024
/* Run the main loop */
1075
1025
1076
1026
if (debug){
1077
1027
fprintf(stderr, "Starting Avahi loop search\n");
1078
1028
}
1080
1030
avahi_simple_poll_loop(mc.simple_poll);
1081
1031
1082
1032
end:
1083
1033
1084
1034
if (debug){
1085
1035
fprintf(stderr, "%s exiting\n", argv[0]);
1086
1036
}
1091
1041
1092
1042
if (mc.server != NULL)
1093
1043
avahi_server_free(mc.server);
1094
1044
1095
1045
if (mc.simple_poll != NULL)
1096
1046
avahi_simple_poll_free(mc.simple_poll);
1097
1047
free(pubkeyfile);
1048
free(seckeyfile);
1049
1098
1050
if (gnutls_initalized){
1099
1051
gnutls_certificate_free_credentials(mc.cred);
1100
1052
gnutls_global_deinit ();
1101
1053
}
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
1054
1143
1055
return exitcode;
1144
1056
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0