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- Committer: Teddy Hogeborn
- Date: 2008-11-08 17:26:35 UTC
- Revision ID: teddy@fukt.bsnet.se-20081108172635-6eexzbysvsk4bu1z
* mandos: Also import "with_statement" and "absolute_import" from
"__future__. Import "closing" from "contextlib".
(Client.__init__): Use "with closing" on "secfile".
(Client.checker_callback): Call "self.bump_timeout()" instead of
doing it directly.
(Client.bump_timeout): New method to bump up the timeout.
(TCP_handler.handle): Simplify code to provide fallback default for
GnuTLS priority string.
(IPv6_TCPServer): Do not inherit from
"SocketServer.ForkingTCPServer", since that is
undocumented - instead, follow the example code
from the documentation.
(if_nametoindex): Use "with closing" on the socket.
"__future__. Import "closing" from "contextlib".
(Client.__init__): Use "with closing" on "secfile".
(Client.checker_callback): Call "self.bump_timeout()" instead of
doing it directly.
(Client.bump_timeout): New method to bump up the timeout.
(TCP_handler.handle): Simplify code to provide fallback default for
GnuTLS priority string.
(IPv6_TCPServer): Do not inherit from
"SocketServer.ForkingTCPServer", since that is
undocumented - instead, follow the example code
from the documentation.
(if_nametoindex): Use "with closing" on the socket.
- files added:
- .bzr-builddeb
- debian
- debian/po
- files removed:
- network-protocol.txt
- files renamed:
- plugins.d/password-request.c => plugins.d/mandos-client.c
- plugins.d/password-request.xml => plugins.d/mandos-client.xml
- files modified:
- Makefile
added
removed
plugins.d/mandos-client.c
9
9
* "browse_callback", and parts of "main".
10
10
*
11
11
* Everything else is
12
* Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
12
* Copyright © 2008 Teddy Hogeborn & Björn Påhlsson
13
13
*
14
14
* This program is free software: you can redistribute it and/or
15
15
* modify it under the terms of the GNU General Public License as
32
32
#define _LARGEFILE_SOURCE
33
33
#define _FILE_OFFSET_BITS 64
34
34
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
36
36
37
#include <stdio.h> /* fprintf(), stderr, fwrite(), stdout,
38
ferror() */
37
#include <stdio.h> /* fprintf(), stderr, fwrite(),
38
stdout, 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(), memcpy(), strcpy() */
45
strerror(), asprintf(), strcpy() */
46
46
#include <sys/ioctl.h> /* ioctl */
47
47
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
48
48
sockaddr_in6, PF_INET6,
49
49
SOCK_STREAM, INET6_ADDRSTRLEN,
50
uid_t, gid_t */
51
#include <inttypes.h> /* PRIu16 */
50
uid_t, gid_t, open(), opendir(), DIR */
51
#include <sys/stat.h> /* open() */
52
52
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
53
53
struct in6_addr, inet_pton(),
54
54
connect() */
55
#include <fcntl.h> /* open() */
56
#include <dirent.h> /* opendir(), struct dirent, readdir() */
57
#include <inttypes.h> /* PRIu16 */
55
58
#include <assert.h> /* assert() */
56
59
#include <errno.h> /* perror(), errno */
57
60
#include <time.h> /* time() */
58
61
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
59
62
SIOCSIFFLAGS, if_indextoname(),
60
63
if_nametoindex(), IF_NAMESIZE */
64
#include <netinet/in.h>
61
65
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
62
66
getuid(), getgid(), setuid(),
63
67
setgid() */
64
#include <netinet/in.h>
65
68
#include <arpa/inet.h> /* inet_pton(), htons */
66
69
#include <iso646.h> /* not, and */
67
70
#include <argp.h> /* struct argp_option, error_t, struct
81
84
#include <avahi-common/error.h>
82
85
83
86
/* GnuTLS */
84
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and functions
87
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
88
functions:
85
89
gnutls_*
86
90
init_gnutls_session(),
87
91
GNUTLS_* */
89
93
GNUTLS_OPENPGP_FMT_BASE64 */
90
94
91
95
/* GPGME */
92
#include <gpgme.h> /* All GPGME types, constants and functions
96
#include <gpgme.h> /* All GPGME types, constants and
97
functions:
93
98
gpgme_*
94
99
GPGME_PROTOCOL_OpenPGP,
95
100
GPG_ERR_NO_* */
96
101
97
102
#define BUFFER_SIZE 256
98
103
104
#define PATHDIR "/conf/conf.d/mandos"
105
#define SECKEY "seckey.txt"
106
#define PUBKEY "pubkey.txt"
107
99
108
bool debug = false;
100
static const char *keydir = "/conf/conf.d/mandos";
101
109
static const char mandos_protocol_version[] = "1";
102
const char *argp_program_version = "password-request 1.0";
110
const char *argp_program_version = "mandos-client " VERSION;
103
111
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
104
112
105
113
/* Used for passing in values through the Avahi callback functions */
110
118
unsigned int dh_bits;
111
119
gnutls_dh_params_t dh_params;
112
120
const char *priority;
121
gpgme_ctx_t ctx;
113
122
} mandos_context;
114
123
115
124
/*
130
139
}
131
140
132
141
/*
133
* Decrypt OpenPGP data using keyrings in HOMEDIR.
134
* Returns -1 on error
142
* Initialize GPGME.
135
143
*/
136
static ssize_t pgp_packet_decrypt (const char *cryptotext,
137
size_t crypto_size,
138
char **plaintext,
139
const char *homedir){
140
gpgme_data_t dh_crypto, dh_plain;
141
gpgme_ctx_t ctx;
144
static bool init_gpgme(mandos_context *mc, const char *seckey,
145
const char *pubkey, const char *tempdir){
146
int ret;
142
147
gpgme_error_t rc;
143
ssize_t ret;
144
size_t plaintext_capacity = 0;
145
ssize_t plaintext_length = 0;
146
148
gpgme_engine_info_t engine_info;
147
149
150
151
/*
152
* Helper function to insert pub and seckey to the enigne keyring.
153
*/
154
bool import_key(const char *filename){
155
int fd;
156
gpgme_data_t pgp_data;
157
158
fd = TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
159
if(fd == -1){
160
perror("open");
161
return false;
162
}
163
164
rc = gpgme_data_new_from_fd(&pgp_data, fd);
165
if (rc != GPG_ERR_NO_ERROR){
166
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
167
gpgme_strsource(rc), gpgme_strerror(rc));
168
return false;
169
}
170
171
rc = gpgme_op_import(mc->ctx, pgp_data);
172
if (rc != GPG_ERR_NO_ERROR){
173
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
174
gpgme_strsource(rc), gpgme_strerror(rc));
175
return false;
176
}
177
178
ret = TEMP_FAILURE_RETRY(close(fd));
179
if(ret == -1){
180
perror("close");
181
}
182
gpgme_data_release(pgp_data);
183
return true;
184
}
185
148
186
if (debug){
149
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
187
fprintf(stderr, "Initialize gpgme\n");
150
188
}
151
189
152
190
/* Init GPGME */
155
193
if (rc != GPG_ERR_NO_ERROR){
156
194
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
157
195
gpgme_strsource(rc), gpgme_strerror(rc));
158
return -1;
196
return false;
159
197
}
160
198
161
/* Set GPGME home directory for the OpenPGP engine only */
199
/* Set GPGME home directory for the OpenPGP engine only */
162
200
rc = gpgme_get_engine_info (&engine_info);
163
201
if (rc != GPG_ERR_NO_ERROR){
164
202
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
165
203
gpgme_strsource(rc), gpgme_strerror(rc));
166
return -1;
204
return false;
167
205
}
168
206
while(engine_info != NULL){
169
207
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
170
208
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
171
engine_info->file_name, homedir);
209
engine_info->file_name, tempdir);
172
210
break;
173
211
}
174
212
engine_info = engine_info->next;
175
213
}
176
214
if(engine_info == NULL){
177
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
178
return -1;
215
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
216
return false;
217
}
218
219
/* Create new GPGME "context" */
220
rc = gpgme_new(&(mc->ctx));
221
if (rc != GPG_ERR_NO_ERROR){
222
fprintf(stderr, "bad gpgme_new: %s: %s\n",
223
gpgme_strsource(rc), gpgme_strerror(rc));
224
return false;
225
}
226
227
if (not import_key(pubkey) or not import_key(seckey)){
228
return false;
229
}
230
231
return true;
232
}
233
234
/*
235
* Decrypt OpenPGP data.
236
* Returns -1 on error
237
*/
238
static ssize_t pgp_packet_decrypt (const mandos_context *mc,
239
const char *cryptotext,
240
size_t crypto_size,
241
char **plaintext){
242
gpgme_data_t dh_crypto, dh_plain;
243
gpgme_error_t rc;
244
ssize_t ret;
245
size_t plaintext_capacity = 0;
246
ssize_t plaintext_length = 0;
247
248
if (debug){
249
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
179
250
}
180
251
181
252
/* Create new GPGME data buffer from memory cryptotext */
196
267
return -1;
197
268
}
198
269
199
/* Create new GPGME "context" */
200
rc = gpgme_new(&ctx);
201
if (rc != GPG_ERR_NO_ERROR){
202
fprintf(stderr, "bad gpgme_new: %s: %s\n",
203
gpgme_strsource(rc), gpgme_strerror(rc));
204
plaintext_length = -1;
205
goto decrypt_end;
206
}
207
208
270
/* Decrypt data from the cryptotext data buffer to the plaintext
209
271
data buffer */
210
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
272
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
211
273
if (rc != GPG_ERR_NO_ERROR){
212
274
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
213
275
gpgme_strsource(rc), gpgme_strerror(rc));
214
276
plaintext_length = -1;
277
if (debug){
278
gpgme_decrypt_result_t result;
279
result = gpgme_op_decrypt_result(mc->ctx);
280
if (result == NULL){
281
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
282
} else {
283
fprintf(stderr, "Unsupported algorithm: %s\n",
284
result->unsupported_algorithm);
285
fprintf(stderr, "Wrong key usage: %u\n",
286
result->wrong_key_usage);
287
if(result->file_name != NULL){
288
fprintf(stderr, "File name: %s\n", result->file_name);
289
}
290
gpgme_recipient_t recipient;
291
recipient = result->recipients;
292
if(recipient){
293
while(recipient != NULL){
294
fprintf(stderr, "Public key algorithm: %s\n",
295
gpgme_pubkey_algo_name(recipient->pubkey_algo));
296
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
297
fprintf(stderr, "Secret key available: %s\n",
298
recipient->status == GPG_ERR_NO_SECKEY
299
? "No" : "Yes");
300
recipient = recipient->next;
301
}
302
}
303
}
304
}
215
305
goto decrypt_end;
216
306
}
217
307
219
309
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
220
310
}
221
311
222
if (debug){
223
gpgme_decrypt_result_t result;
224
result = gpgme_op_decrypt_result(ctx);
225
if (result == NULL){
226
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
227
} else {
228
fprintf(stderr, "Unsupported algorithm: %s\n",
229
result->unsupported_algorithm);
230
fprintf(stderr, "Wrong key usage: %u\n",
231
result->wrong_key_usage);
232
if(result->file_name != NULL){
233
fprintf(stderr, "File name: %s\n", result->file_name);
234
}
235
gpgme_recipient_t recipient;
236
recipient = result->recipients;
237
if(recipient){
238
while(recipient != NULL){
239
fprintf(stderr, "Public key algorithm: %s\n",
240
gpgme_pubkey_algo_name(recipient->pubkey_algo));
241
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
242
fprintf(stderr, "Secret key available: %s\n",
243
recipient->status == GPG_ERR_NO_SECKEY
244
? "No" : "Yes");
245
recipient = recipient->next;
246
}
247
}
248
}
249
}
250
251
312
/* Seek back to the beginning of the GPGME plaintext data buffer */
252
313
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
253
perror("pgpme_data_seek");
314
perror("gpgme_data_seek");
254
315
plaintext_length = -1;
255
316
goto decrypt_end;
256
317
}
280
341
}
281
342
plaintext_length += ret;
282
343
}
283
344
284
345
if(debug){
285
346
fprintf(stderr, "Decrypted password is: ");
286
347
for(ssize_t i = 0; i < plaintext_length; i++){
300
361
}
301
362
302
363
static const char * safer_gnutls_strerror (int value) {
303
const char *ret = gnutls_strerror (value);
364
const char *ret = gnutls_strerror (value); /* Spurious warning */
304
365
if (ret == NULL)
305
366
ret = "(unknown)";
306
367
return ret;
313
374
}
314
375
315
376
static int init_gnutls_global(mandos_context *mc,
316
const char *pubkeyfile,
317
const char *seckeyfile){
377
const char *pubkeyfilename,
378
const char *seckeyfilename){
318
379
int ret;
319
380
320
381
if(debug){
339
400
/* OpenPGP credentials */
340
401
gnutls_certificate_allocate_credentials(&mc->cred);
341
402
if (ret != GNUTLS_E_SUCCESS){
342
fprintf (stderr, "GnuTLS memory error: %s\n",
403
fprintf (stderr, "GnuTLS memory error: %s\n", /* Spurious
404
warning */
343
405
safer_gnutls_strerror(ret));
344
406
gnutls_global_deinit ();
345
407
return -1;
346
408
}
347
409
348
410
if(debug){
349
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
350
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
351
seckeyfile);
411
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
412
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
413
seckeyfilename);
352
414
}
353
415
354
416
ret = gnutls_certificate_set_openpgp_key_file
355
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
417
(mc->cred, pubkeyfilename, seckeyfilename,
418
GNUTLS_OPENPGP_FMT_BASE64);
356
419
if (ret != GNUTLS_E_SUCCESS) {
357
420
fprintf(stderr,
358
421
"Error[%d] while reading the OpenPGP key pair ('%s',"
359
" '%s')\n", ret, pubkeyfile, seckeyfile);
360
fprintf(stdout, "The GnuTLS error is: %s\n",
422
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
423
fprintf(stderr, "The GnuTLS error is: %s\n",
361
424
safer_gnutls_strerror(ret));
362
425
goto globalfail;
363
426
}
377
440
}
378
441
379
442
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
380
443
381
444
return 0;
382
445
383
446
globalfail:
384
447
385
448
gnutls_certificate_free_credentials(mc->cred);
386
449
gnutls_global_deinit();
450
gnutls_dh_params_deinit(mc->dh_params);
387
451
return -1;
388
389
452
}
390
453
391
454
static int init_gnutls_session(mandos_context *mc,
463
526
perror("socket");
464
527
return -1;
465
528
}
466
529
467
530
if(debug){
468
531
if(if_indextoname((unsigned int)if_index, interface) == NULL){
469
532
perror("if_indextoname");
472
535
fprintf(stderr, "Binding to interface %s\n", interface);
473
536
}
474
537
475
memset(&to,0,sizeof(to)); /* Spurious warning */
538
memset(&to, 0, sizeof(to));
476
539
to.in6.sin6_family = AF_INET6;
477
540
/* It would be nice to have a way to detect if we were passed an
478
541
IPv4 address here. Now we assume an IPv6 address. */
508
571
perror("connect");
509
572
return -1;
510
573
}
511
574
512
575
const char *out = mandos_protocol_version;
513
576
written = 0;
514
577
while (true){
532
595
}
533
596
}
534
597
}
535
598
536
599
if(debug){
537
600
fprintf(stderr, "Establishing TLS session with %s\n", ip);
538
601
}
539
602
540
603
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
541
604
542
605
do{
543
606
ret = gnutls_handshake (session);
544
607
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
558
621
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
559
622
ip);
560
623
}
561
624
562
625
while(true){
563
626
buffer_capacity = adjustbuffer(&buffer, buffer_length,
564
627
buffer_capacity);
608
671
gnutls_bye (session, GNUTLS_SHUT_RDWR);
609
672
610
673
if (buffer_length > 0){
611
decrypted_buffer_size = pgp_packet_decrypt(buffer,
674
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
612
675
buffer_length,
613
&decrypted_buffer,
614
keydir);
676
&decrypted_buffer);
615
677
if (decrypted_buffer_size >= 0){
616
678
written = 0;
617
679
while(written < (size_t) decrypted_buffer_size){
632
694
} else {
633
695
retval = -1;
634
696
}
697
} else {
698
retval = -1;
635
699
}
636
700
637
701
/* Shutdown procedure */
638
702
639
703
mandos_end:
640
704
free(buffer);
641
close(tcp_sd);
705
ret = TEMP_FAILURE_RETRY(close(tcp_sd));
706
if(ret == -1){
707
perror("close");
708
}
642
709
gnutls_deinit (session);
643
710
return retval;
644
711
}
658
725
flags,
659
726
void* userdata) {
660
727
mandos_context *mc = userdata;
661
assert(r); /* Spurious warning */
728
assert(r);
662
729
663
730
/* Called whenever a service has been resolved successfully or
664
731
timed out */
700
767
flags,
701
768
void* userdata) {
702
769
mandos_context *mc = userdata;
703
assert(b); /* Spurious warning */
770
assert(b);
704
771
705
772
/* Called whenever a new services becomes available on the LAN or
706
773
is removed from the LAN */
740
807
}
741
808
}
742
809
743
/* Combines file name and path and returns the malloced new
744
string. some sane checks could/should be added */
745
static const char *combinepath(const char *first, const char *second){
746
size_t f_len = strlen(first);
747
size_t s_len = strlen(second);
748
char *tmp = malloc(f_len + s_len + 2);
749
if (tmp == NULL){
750
return NULL;
751
}
752
if(f_len > 0){
753
memcpy(tmp, first, f_len); /* Spurious warning */
754
}
755
tmp[f_len] = '/';
756
if(s_len > 0){
757
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
758
}
759
tmp[f_len + 1 + s_len] = '\0';
760
return tmp;
761
}
762
763
764
810
int main(int argc, char *argv[]){
765
811
AvahiSServiceBrowser *sb = NULL;
766
812
int error;
772
818
uid_t uid;
773
819
gid_t gid;
774
820
char *connect_to = NULL;
821
char tempdir[] = "/tmp/mandosXXXXXX";
775
822
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
776
const char *pubkeyfile = "pubkey.txt";
777
const char *seckeyfile = "seckey.txt";
823
const char *seckey = PATHDIR "/" SECKEY;
824
const char *pubkey = PATHDIR "/" PUBKEY;
825
778
826
mandos_context mc = { .simple_poll = NULL, .server = NULL,
779
.dh_bits = 1024, .priority = "SECURE256"};
827
.dh_bits = 1024, .priority = "SECURE256"
828
":!CTYPE-X.509:+CTYPE-OPENPGP" };
780
829
bool gnutls_initalized = false;
830
bool gpgme_initalized = false;
781
831
782
832
{
783
833
struct argp_option options[] = {
784
834
{ .name = "debug", .key = 128,
785
835
.doc = "Debug mode", .group = 3 },
786
836
{ .name = "connect", .key = 'c',
787
.arg = "IP",
788
.doc = "Connect directly to a sepcified mandos server",
837
.arg = "ADDRESS:PORT",
838
.doc = "Connect directly to a specific Mandos server",
789
839
.group = 1 },
790
840
{ .name = "interface", .key = 'i',
791
.arg = "INTERFACE",
792
.doc = "Interface that Avahi will conntect through",
793
.group = 1 },
794
{ .name = "keydir", .key = 'd',
795
.arg = "KEYDIR",
796
.doc = "Directory where the openpgp keyring is",
841
.arg = "NAME",
842
.doc = "Interface that will be used to search for Mandos"
843
" servers",
797
844
.group = 1 },
798
845
{ .name = "seckey", .key = 's',
799
.arg = "SECKEY",
800
.doc = "Secret openpgp key for gnutls authentication",
846
.arg = "FILE",
847
.doc = "OpenPGP secret key file base name",
801
848
.group = 1 },
802
849
{ .name = "pubkey", .key = 'p',
803
.arg = "PUBKEY",
804
.doc = "Public openpgp key for gnutls authentication",
850
.arg = "FILE",
851
.doc = "OpenPGP public key file base name",
805
852
.group = 2 },
806
853
{ .name = "dh-bits", .key = 129,
807
854
.arg = "BITS",
808
.doc = "dh-bits to use in gnutls communication",
855
.doc = "Bit length of the prime number used in the"
856
" Diffie-Hellman key exchange",
809
857
.group = 2 },
810
858
{ .name = "priority", .key = 130,
811
.arg = "PRIORITY",
812
.doc = "GNUTLS priority", .group = 1 },
859
.arg = "STRING",
860
.doc = "GnuTLS priority string for the TLS handshake",
861
.group = 1 },
813
862
{ .name = NULL }
814
863
};
815
816
864
817
865
error_t parse_opt (int key, char *arg,
818
866
struct argp_state *state) {
819
867
/* Get the INPUT argument from `argp_parse', which we know is
820
868
a pointer to our plugin list pointer. */
821
869
switch (key) {
822
case 128:
870
case 128: /* --debug */
823
871
debug = true;
824
872
break;
825
case 'c':
873
case 'c': /* --connect */
826
874
connect_to = arg;
827
875
break;
828
case 'i':
876
case 'i': /* --interface */
829
877
interface = arg;
830
878
break;
831
case 'd':
832
keydir = arg;
833
break;
834
case 's':
835
seckeyfile = arg;
836
break;
837
case 'p':
838
pubkeyfile = arg;
839
break;
840
case 129:
879
case 's': /* --seckey */
880
seckey = arg;
881
break;
882
case 'p': /* --pubkey */
883
pubkey = arg;
884
break;
885
case 129: /* --dh-bits */
841
886
errno = 0;
842
887
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
843
888
if (errno){
845
890
exit(EXIT_FAILURE);
846
891
}
847
892
break;
848
case 130:
893
case 130: /* --priority */
849
894
mc.priority = arg;
850
895
break;
851
896
case ARGP_KEY_ARG:
857
902
}
858
903
return 0;
859
904
}
860
905
861
906
struct argp argp = { .options = options, .parser = parse_opt,
862
907
.args_doc = "",
863
908
.doc = "Mandos client -- Get and decrypt"
864
" passwords from mandos server" };
909
" passwords from a Mandos server" };
865
910
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
866
911
if (ret == ARGP_ERR_UNKNOWN){
867
912
fprintf(stderr, "Unknown error while parsing arguments\n");
869
914
goto end;
870
915
}
871
916
}
872
873
pubkeyfile = combinepath(keydir, pubkeyfile);
874
if (pubkeyfile == NULL){
875
perror("combinepath");
876
exitcode = EXIT_FAILURE;
877
goto end;
878
}
879
880
seckeyfile = combinepath(keydir, seckeyfile);
881
if (seckeyfile == NULL){
882
perror("combinepath");
883
exitcode = EXIT_FAILURE;
884
goto end;
885
}
886
887
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
888
if (ret == -1){
889
fprintf(stderr, "init_gnutls_global failed\n");
890
exitcode = EXIT_FAILURE;
891
goto end;
892
} else {
893
gnutls_initalized = true;
894
}
895
917
896
918
/* If the interface is down, bring it up */
897
919
{
901
923
exitcode = EXIT_FAILURE;
902
924
goto end;
903
925
}
904
strcpy(network.ifr_name, interface); /* Spurious warning */
926
strcpy(network.ifr_name, interface);
905
927
ret = ioctl(sd, SIOCGIFFLAGS, &network);
906
928
if(ret == -1){
907
929
perror("ioctl SIOCGIFFLAGS");
917
939
goto end;
918
940
}
919
941
}
920
close(sd);
942
ret = TEMP_FAILURE_RETRY(close(sd));
943
if(ret == -1){
944
perror("close");
945
}
921
946
}
922
947
923
948
uid = getuid();
933
958
perror("setgid");
934
959
}
935
960
961
ret = init_gnutls_global(&mc, pubkey, seckey);
962
if (ret == -1){
963
fprintf(stderr, "init_gnutls_global failed\n");
964
exitcode = EXIT_FAILURE;
965
goto end;
966
} else {
967
gnutls_initalized = true;
968
}
969
970
if(mkdtemp(tempdir) == NULL){
971
perror("mkdtemp");
972
tempdir[0] = '\0';
973
goto end;
974
}
975
976
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
977
fprintf(stderr, "gpgme_initalized failed\n");
978
exitcode = EXIT_FAILURE;
979
goto end;
980
} else {
981
gpgme_initalized = true;
982
}
983
936
984
if_index = (AvahiIfIndex) if_nametoindex(interface);
937
985
if(if_index == 0){
938
986
fprintf(stderr, "No such interface: \"%s\"\n", interface);
981
1029
exitcode = EXIT_FAILURE;
982
1030
goto end;
983
1031
}
984
1032
985
1033
{
986
1034
AvahiServerConfig config;
987
1035
/* Do not publish any local Zeroconf records */
990
1038
config.publish_addresses = 0;
991
1039
config.publish_workstation = 0;
992
1040
config.publish_domain = 0;
993
1041
994
1042
/* Allocate a new server */
995
1043
mc.server = avahi_server_new(avahi_simple_poll_get
996
1044
(mc.simple_poll), &config, NULL,
997
1045
NULL, &error);
998
1046
999
1047
/* Free the Avahi configuration data */
1000
1048
avahi_server_config_free(&config);
1001
1049
}
1021
1069
}
1022
1070
1023
1071
/* Run the main loop */
1024
1072
1025
1073
if (debug){
1026
1074
fprintf(stderr, "Starting Avahi loop search\n");
1027
1075
}
1029
1077
avahi_simple_poll_loop(mc.simple_poll);
1030
1078
1031
1079
end:
1032
1080
1033
1081
if (debug){
1034
1082
fprintf(stderr, "%s exiting\n", argv[0]);
1035
1083
}
1040
1088
1041
1089
if (mc.server != NULL)
1042
1090
avahi_server_free(mc.server);
1043
1091
1044
1092
if (mc.simple_poll != NULL)
1045
1093
avahi_simple_poll_free(mc.simple_poll);
1046
free(pubkeyfile);
1047
free(seckeyfile);
1048
1094
1049
1095
if (gnutls_initalized){
1050
1096
gnutls_certificate_free_credentials(mc.cred);
1051
1097
gnutls_global_deinit ();
1052
}
1053
1098
gnutls_dh_params_deinit(mc.dh_params);
1099
}
1100
1101
if(gpgme_initalized){
1102
gpgme_release(mc.ctx);
1103
}
1104
1105
/* Removes the temp directory used by GPGME */
1106
if(tempdir[0] != '\0'){
1107
DIR *d;
1108
struct dirent *direntry;
1109
d = opendir(tempdir);
1110
if(d == NULL){
1111
perror("opendir");
1112
} else {
1113
while(true){
1114
direntry = readdir(d);
1115
if(direntry == NULL){
1116
break;
1117
}
1118
if (direntry->d_type == DT_REG){
1119
char *fullname = NULL;
1120
ret = asprintf(&fullname, "%s/%s", tempdir,
1121
direntry->d_name);
1122
if(ret < 0){
1123
perror("asprintf");
1124
continue;
1125
}
1126
ret = unlink(fullname);
1127
if(ret == -1){
1128
fprintf(stderr, "unlink(\"%s\"): %s",
1129
fullname, strerror(errno));
1130
}
1131
free(fullname);
1132
}
1133
}
1134
closedir(d);
1135
}
1136
ret = rmdir(tempdir);
1137
if(ret == -1){
1138
perror("rmdir");
1139
}
1140
}
1141
1054
1142
return exitcode;
1055
1143
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0