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- Committer: Björn Påhlsson
- Date: 2008-08-09 04:49:12 UTC
- mfrom: (52 mandos)
- mto: (24.1.154 mandos) (237.4.3 mandos-release)
- mto: This revision was merged to the branch mainline in revision 53.
- Revision ID: belorn@braxen-20080809044912-b4axmz98dv4e09hh
merge
- files added:
- mandos-client.xml
- files removed:
- ca.pem
- files renamed:
- mandos-clients.conf => clients.conf
- server.py => mandos
- plugbasedclient.c => mandos-client.c
- plugins.d/passprompt.c => plugins.d/password-prompt.c
- plugins.d/mandosclient.c => plugins.d/password-request.c
- files modified:
- Makefile
added
removed
plugins.d/password-request.c
8
8
* includes the following functions: "resolve_callback",
9
9
* "browse_callback", and parts of "main".
10
10
*
11
* Everything else is Copyright © 2007-2008 Teddy Hogeborn and Björn
12
* Påhlsson.
11
* Everything else is
12
* Copyright © 2007-2008 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
25
25
* along with this program. If not, see
26
26
* <http://www.gnu.org/licenses/>.
27
27
*
28
* Contact the authors at <https://www.fukt.bsnet.se/~belorn/> and
29
* <https://www.fukt.bsnet.se/~teddy/>.
28
* Contact the authors at <mandos@fukt.bsnet.se>.
30
29
*/
31
30
32
#define _FORTIFY_SOURCE 2
33
31
/* Needed by GPGME, specifically gpgme_data_seek() */
34
32
#define _LARGEFILE_SOURCE
35
33
#define _FILE_OFFSET_BITS 64
36
34
37
#include <stdio.h>
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
36
37
#include <stdio.h> /* fprintf(), stderr, fwrite(), stdout, ferror() */
38
#include <stdint.h> /* uint16_t, uint32_t */
39
#include <stddef.h> /* NULL, size_t, ssize_t */
40
#include <stdlib.h> /* free() */
41
#include <stdbool.h> /* bool, true */
42
#include <string.h> /* memset(), strcmp(), strlen, strerror() */
43
#include <sys/ioctl.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
44
SIOCSIFFLAGS */
45
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
46
sockaddr_in6, PF_INET6, SOCK_STREAM, INET6_ADDRSTRLEN */
47
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
48
struct in6_addr, inet_pton(),
49
connect() */
38
50
#include <assert.h>
39
#include <stdlib.h>
51
#include <errno.h> /* perror() */
40
52
#include <time.h>
41
#include <net/if.h> /* if_nametoindex */
42
#include <sys/ioctl.h> // ioctl, ifreq, SIOCGIFFLAGS, IFF_UP, SIOCSIFFLAGS
43
#include <net/if.h> // ioctl, ifreq, SIOCGIFFLAGS, IFF_UP, SIOCSIFFLAGS
53
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
54
SIOCSIFFLAGS, if_indextoname(),
55
if_nametoindex(), IF_NAMESIZE */
56
#include <unistd.h> /* close(), SEEK_SET, off_t, write()*/
57
#include <netinet/in.h>
58
#include <arpa/inet.h> /* inet_pton(), htons */
59
#include <iso646.h> /* not */
60
#include <argp.h> /* struct argp_option,
61
struct argp_state, struct argp,
62
argp_parse() */
44
63
45
#include <avahi-core/core.h>
64
/* Avahi */
65
#include <avahi-core/core.h> /* AvahiSimplePoll, AvahiServer,
66
AvahiIfIndex */
46
67
#include <avahi-core/lookup.h>
47
#include <avahi-core/log.h>
68
#include <avahi-core/log.h> /* AvahiLogLevel */
48
69
#include <avahi-common/simple-watch.h>
49
70
#include <avahi-common/malloc.h>
50
71
#include <avahi-common/error.h>
51
72
52
//mandos client part
53
#include <sys/types.h> /* socket(), inet_pton() */
54
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
55
struct in6_addr, inet_pton() */
56
#include <gnutls/gnutls.h> /* All GnuTLS stuff */
57
#include <gnutls/openpgp.h> /* GnuTLS with openpgp stuff */
58
59
#include <unistd.h> /* close() */
60
#include <netinet/in.h>
61
#include <stdbool.h> /* true */
62
#include <string.h> /* memset */
63
#include <arpa/inet.h> /* inet_pton() */
64
#include <iso646.h> /* not */
65
66
// gpgme
67
#include <errno.h> /* perror() */
68
#include <gpgme.h>
69
70
// getopt long
71
#include <getopt.h>
73
/* GnuTLS */
74
#include <gnutls/gnutls.h> /* gnutls_certificate_credentials_t,
75
gnutls_dh_params_t,
76
gnutls_strerror(),
77
gnutls_global_init(),
78
gnutls_global_set_log_level(),
79
gnutls_global_set_log_function(),
80
gnutls_certificate_allocate_credentials(),
81
gnutls_global_deinit(),
82
gnutls_dh_params_init(),
83
gnutls_dh_params_generate(),
84
gnutls_certificate_set_dh_params(),
85
gnutls_certificate_free_credentials(),
86
gnutls_session_t, gnutls_init(),
87
gnutls_priority_set_direct(),
88
gnutls_deinit(),
89
gnutls_credentials_set(),
90
gnutls_certificate_server_set_request(),
91
gnutls_dh_set_prime_bits(),
92
gnutls_transport_set_ptr(),
93
gnutls_transport_ptr_t,
94
gnutls_handshake(),
95
gnutls_record_recv()
96
gnutls_perror(), gnutls_bye(),
97
init_gnutls_session(),
98
GNUTLS_E_SUCCESS,
99
GNUTLS_CRD_CERTIFICATE,
100
GNUTLS_CERT_IGNORE,
101
GNUTLS_E_INTERRUPTED,
102
GNUTLS_E_AGAIN,
103
GNUTLS_E_REHANDSHAKE,
104
GNUTLS_SHUT_RDWR, */
105
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
106
GNUTLS_OPENPGP_FMT_BASE64 */
107
108
/* GPGME */
109
#include <gpgme.h> /* gpgme_data_t, gpgme_ctx_t,
110
gpgme_error_t, gpgme_engine_info_t,
111
gpgme_check_version(),
112
gpgme_engine_check_version(),
113
gpgme_strsource(),
114
gpgme_strerror(),
115
gpgme_get_engine_info(),
116
gpgme_set_engine_info(),
117
gpgme_data_new_from_mem(),
118
gpgme_data_new(), gpgme_new(),
119
gpgme_op_decrypt(),
120
gpgme_decrypt_result_t,
121
gpgme_op_decrypt_result(),
122
gpgme_recipient_t,
123
gpgme_pubkey_algo_name(),
124
gpgme_data_seek(),
125
gpgme_data_read(),
126
gpgme_data_release()
127
GPGME_PROTOCOL_OpenPGP,
128
GPG_ERR_NO_ERROR,
129
GPG_ERR_NO_SECKEY, */
72
130
73
131
#define BUFFER_SIZE 256
74
#define DH_BITS 1024
75
76
const char *certdir = "/conf/conf.d/cryptkeyreq/";
77
const char *certfile = "openpgp-client.txt";
78
const char *certkey = "openpgp-client-key.txt";
79
132
80
133
bool debug = false;
134
static const char *keydir = "/conf/conf.d/mandos";
135
static const char mandos_protocol_version[] = "1";
136
const char *argp_program_version = "mandosclient 0.9";
137
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
81
138
139
/* Used for passing in values through the Avahi callback functions */
82
140
typedef struct {
83
gnutls_session_t session;
141
AvahiSimplePoll *simple_poll;
142
AvahiServer *server;
84
143
gnutls_certificate_credentials_t cred;
144
unsigned int dh_bits;
85
145
gnutls_dh_params_t dh_params;
86
} encrypted_session;
87
88
89
ssize_t pgp_packet_decrypt (char *packet, size_t packet_size,
90
char **new_packet, const char *homedir){
146
const char *priority;
147
} mandos_context;
148
149
/*
150
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
151
* "buffer_capacity" is how much is currently allocated,
152
* "buffer_length" is how much is already used.
153
*/
154
size_t adjustbuffer(char **buffer, size_t buffer_length,
155
size_t buffer_capacity){
156
if (buffer_length + BUFFER_SIZE > buffer_capacity){
157
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
158
if (buffer == NULL){
159
return 0;
160
}
161
buffer_capacity += BUFFER_SIZE;
162
}
163
return buffer_capacity;
164
}
165
166
/*
167
* Decrypt OpenPGP data using keyrings in HOMEDIR.
168
* Returns -1 on error
169
*/
170
static ssize_t pgp_packet_decrypt (const char *cryptotext,
171
size_t crypto_size,
172
char **plaintext,
173
const char *homedir){
91
174
gpgme_data_t dh_crypto, dh_plain;
92
175
gpgme_ctx_t ctx;
93
176
gpgme_error_t rc;
94
177
ssize_t ret;
95
ssize_t new_packet_capacity = 0;
96
ssize_t new_packet_length = 0;
178
size_t plaintext_capacity = 0;
179
ssize_t plaintext_length = 0;
97
180
gpgme_engine_info_t engine_info;
98
181
99
182
if (debug){
100
fprintf(stderr, "Trying to decrypt OpenPGP packet\n");
183
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
101
184
}
102
185
103
186
/* Init GPGME */
109
192
return -1;
110
193
}
111
194
112
/* Set GPGME home directory */
195
/* Set GPGME home directory for the OpenPGP engine only */
113
196
rc = gpgme_get_engine_info (&engine_info);
114
197
if (rc != GPG_ERR_NO_ERROR){
115
198
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
125
208
engine_info = engine_info->next;
126
209
}
127
210
if(engine_info == NULL){
128
fprintf(stderr, "Could not set home dir to %s\n", homedir);
211
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
129
212
return -1;
130
213
}
131
214
132
/* Create new GPGME data buffer from packet buffer */
133
rc = gpgme_data_new_from_mem(&dh_crypto, packet, packet_size, 0);
215
/* Create new GPGME data buffer from memory cryptotext */
216
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
217
0);
134
218
if (rc != GPG_ERR_NO_ERROR){
135
219
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
136
220
gpgme_strsource(rc), gpgme_strerror(rc));
142
226
if (rc != GPG_ERR_NO_ERROR){
143
227
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
144
228
gpgme_strsource(rc), gpgme_strerror(rc));
229
gpgme_data_release(dh_crypto);
145
230
return -1;
146
231
}
147
232
150
235
if (rc != GPG_ERR_NO_ERROR){
151
236
fprintf(stderr, "bad gpgme_new: %s: %s\n",
152
237
gpgme_strsource(rc), gpgme_strerror(rc));
153
return -1;
238
plaintext_length = -1;
239
goto decrypt_end;
154
240
}
155
241
156
/* Decrypt data from the FILE pointer to the plaintext data
157
buffer */
242
/* Decrypt data from the cryptotext data buffer to the plaintext
243
data buffer */
158
244
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
159
245
if (rc != GPG_ERR_NO_ERROR){
160
246
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
161
247
gpgme_strsource(rc), gpgme_strerror(rc));
162
return -1;
248
plaintext_length = -1;
249
goto decrypt_end;
163
250
}
164
251
165
252
if(debug){
166
fprintf(stderr, "Decryption of OpenPGP packet succeeded\n");
253
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
167
254
}
168
255
169
256
if (debug){
170
257
gpgme_decrypt_result_t result;
171
258
result = gpgme_op_decrypt_result(ctx);
195
282
}
196
283
}
197
284
198
/* Delete the GPGME FILE pointer cryptotext data buffer */
199
gpgme_data_release(dh_crypto);
200
201
285
/* Seek back to the beginning of the GPGME plaintext data buffer */
202
286
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
203
287
perror("pgpme_data_seek");
288
plaintext_length = -1;
289
goto decrypt_end;
204
290
}
205
291
206
*new_packet = 0;
292
*plaintext = NULL;
207
293
while(true){
208
if (new_packet_length + BUFFER_SIZE > new_packet_capacity){
209
*new_packet = realloc(*new_packet,
210
(unsigned int)new_packet_capacity
211
+ BUFFER_SIZE);
212
if (*new_packet == NULL){
213
perror("realloc");
214
return -1;
215
}
216
new_packet_capacity += BUFFER_SIZE;
294
plaintext_capacity = adjustbuffer(plaintext,
295
(size_t)plaintext_length,
296
plaintext_capacity);
297
if (plaintext_capacity == 0){
298
perror("adjustbuffer");
299
plaintext_length = -1;
300
goto decrypt_end;
217
301
}
218
302
219
ret = gpgme_data_read(dh_plain, *new_packet + new_packet_length,
303
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
220
304
BUFFER_SIZE);
221
305
/* Print the data, if any */
222
306
if (ret == 0){
307
/* EOF */
223
308
break;
224
309
}
225
310
if(ret < 0){
226
311
perror("gpgme_data_read");
227
return -1;
312
plaintext_length = -1;
313
goto decrypt_end;
228
314
}
229
new_packet_length += ret;
315
plaintext_length += ret;
230
316
}
231
317
232
/* FIXME: check characters before printing to screen so to not print
233
terminal control characters */
234
/* if(debug){ */
235
/* fprintf(stderr, "decrypted password is: "); */
236
/* fwrite(*new_packet, 1, new_packet_length, stderr); */
237
/* fprintf(stderr, "\n"); */
238
/* } */
318
if(debug){
319
fprintf(stderr, "Decrypted password is: ");
320
for(ssize_t i = 0; i < plaintext_length; i++){
321
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
322
}
323
fprintf(stderr, "\n");
324
}
325
326
decrypt_end:
327
328
/* Delete the GPGME cryptotext data buffer */
329
gpgme_data_release(dh_crypto);
239
330
240
331
/* Delete the GPGME plaintext data buffer */
241
332
gpgme_data_release(dh_plain);
242
return new_packet_length;
333
return plaintext_length;
243
334
}
244
335
245
336
static const char * safer_gnutls_strerror (int value) {
249
340
return ret;
250
341
}
251
342
252
void debuggnutls(__attribute__((unused)) int level,
253
const char* string){
254
fprintf(stderr, "%s", string);
343
/* GnuTLS log function callback */
344
static void debuggnutls(__attribute__((unused)) int level,
345
const char* string){
346
fprintf(stderr, "GnuTLS: %s", string);
255
347
}
256
348
257
int initgnutls(encrypted_session *es){
258
const char *err;
349
static int init_gnutls_global(mandos_context *mc,
350
const char *pubkeyfile,
351
const char *seckeyfile){
259
352
int ret;
260
353
261
354
if(debug){
264
357
265
358
if ((ret = gnutls_global_init ())
266
359
!= GNUTLS_E_SUCCESS) {
267
fprintf (stderr, "global_init: %s\n", safer_gnutls_strerror(ret));
360
fprintf (stderr, "GnuTLS global_init: %s\n",
361
safer_gnutls_strerror(ret));
268
362
return -1;
269
363
}
270
364
271
365
if (debug){
366
/* "Use a log level over 10 to enable all debugging options."
367
* - GnuTLS manual
368
*/
272
369
gnutls_global_set_log_level(11);
273
370
gnutls_global_set_log_function(debuggnutls);
274
371
}
275
372
276
/* openpgp credentials */
277
if ((ret = gnutls_certificate_allocate_credentials (&es->cred))
373
/* OpenPGP credentials */
374
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
278
375
!= GNUTLS_E_SUCCESS) {
279
fprintf (stderr, "memory error: %s\n",
376
fprintf (stderr, "GnuTLS memory error: %s\n",
280
377
safer_gnutls_strerror(ret));
378
gnutls_global_deinit ();
281
379
return -1;
282
380
}
283
381
284
382
if(debug){
285
383
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
286
" and keyfile %s as GnuTLS credentials\n", certfile,
287
certkey);
384
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
385
seckeyfile);
288
386
}
289
387
290
388
ret = gnutls_certificate_set_openpgp_key_file
291
(es->cred, certfile, certkey, GNUTLS_OPENPGP_FMT_BASE64);
389
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
292
390
if (ret != GNUTLS_E_SUCCESS) {
293
fprintf
294
(stderr, "Error[%d] while reading the OpenPGP key pair ('%s',"
295
" '%s')\n",
296
ret, certfile, certkey);
297
fprintf(stdout, "The Error is: %s\n",
391
fprintf(stderr,
392
"Error[%d] while reading the OpenPGP key pair ('%s',"
393
" '%s')\n", ret, pubkeyfile, seckeyfile);
394
fprintf(stdout, "The GnuTLS error is: %s\n",
298
395
safer_gnutls_strerror(ret));
299
return -1;
300
}
301
302
//GnuTLS server initialization
303
if ((ret = gnutls_dh_params_init (&es->dh_params))
304
!= GNUTLS_E_SUCCESS) {
305
fprintf (stderr, "Error in dh parameter initialization: %s\n",
306
safer_gnutls_strerror(ret));
307
return -1;
308
}
309
310
if ((ret = gnutls_dh_params_generate2 (es->dh_params, DH_BITS))
311
!= GNUTLS_E_SUCCESS) {
312
fprintf (stderr, "Error in prime generation: %s\n",
313
safer_gnutls_strerror(ret));
314
return -1;
315
}
316
317
gnutls_certificate_set_dh_params (es->cred, es->dh_params);
318
319
// GnuTLS session creation
320
if ((ret = gnutls_init (&es->session, GNUTLS_SERVER))
321
!= GNUTLS_E_SUCCESS){
396
goto globalfail;
397
}
398
399
/* GnuTLS server initialization */
400
ret = gnutls_dh_params_init(&mc->dh_params);
401
if (ret != GNUTLS_E_SUCCESS) {
402
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
403
" %s\n", safer_gnutls_strerror(ret));
404
goto globalfail;
405
}
406
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
407
if (ret != GNUTLS_E_SUCCESS) {
408
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
409
safer_gnutls_strerror(ret));
410
goto globalfail;
411
}
412
413
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
414
415
return 0;
416
417
globalfail:
418
419
gnutls_certificate_free_credentials(mc->cred);
420
gnutls_global_deinit();
421
return -1;
422
423
}
424
425
static int init_gnutls_session(mandos_context *mc,
426
gnutls_session_t *session){
427
int ret;
428
/* GnuTLS session creation */
429
ret = gnutls_init(session, GNUTLS_SERVER);
430
if (ret != GNUTLS_E_SUCCESS){
322
431
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
323
432
safer_gnutls_strerror(ret));
324
433
}
325
434
326
if ((ret = gnutls_priority_set_direct (es->session, "NORMAL", &err))
327
!= GNUTLS_E_SUCCESS) {
328
fprintf(stderr, "Syntax error at: %s\n", err);
329
fprintf(stderr, "GnuTLS error: %s\n",
330
safer_gnutls_strerror(ret));
331
return -1;
435
{
436
const char *err;
437
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
438
if (ret != GNUTLS_E_SUCCESS) {
439
fprintf(stderr, "Syntax error at: %s\n", err);
440
fprintf(stderr, "GnuTLS error: %s\n",
441
safer_gnutls_strerror(ret));
442
gnutls_deinit (*session);
443
return -1;
444
}
332
445
}
333
446
334
if ((ret = gnutls_credentials_set
335
(es->session, GNUTLS_CRD_CERTIFICATE, es->cred))
336
!= GNUTLS_E_SUCCESS) {
337
fprintf(stderr, "Error setting a credentials set: %s\n",
447
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
448
mc->cred);
449
if (ret != GNUTLS_E_SUCCESS) {
450
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
338
451
safer_gnutls_strerror(ret));
452
gnutls_deinit (*session);
339
453
return -1;
340
454
}
341
455
342
456
/* ignore client certificate if any. */
343
gnutls_certificate_server_set_request (es->session,
457
gnutls_certificate_server_set_request (*session,
344
458
GNUTLS_CERT_IGNORE);
345
459
346
gnutls_dh_set_prime_bits (es->session, DH_BITS);
460
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
347
461
348
462
return 0;
349
463
}
350
464
351
void empty_log(__attribute__((unused)) AvahiLogLevel level,
352
__attribute__((unused)) const char *txt){}
465
/* Avahi log function callback */
466
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
467
__attribute__((unused)) const char *txt){}
353
468
354
int start_mandos_communication(const char *ip, uint16_t port,
355
unsigned int if_index){
469
/* Called when a Mandos server is found */
470
static int start_mandos_communication(const char *ip, uint16_t port,
471
AvahiIfIndex if_index,
472
mandos_context *mc){
356
473
int ret, tcp_sd;
357
struct sockaddr_in6 to;
358
encrypted_session es;
474
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
359
475
char *buffer = NULL;
360
476
char *decrypted_buffer;
361
477
size_t buffer_length = 0;
362
478
size_t buffer_capacity = 0;
363
479
ssize_t decrypted_buffer_size;
364
size_t written = 0;
480
size_t written;
365
481
int retval = 0;
366
482
char interface[IF_NAMESIZE];
483
gnutls_session_t session;
484
485
ret = init_gnutls_session (mc, &session);
486
if (ret != 0){
487
return -1;
488
}
367
489
368
490
if(debug){
369
fprintf(stderr, "Setting up a tcp connection to %s\n", ip);
491
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
492
ip, port);
370
493
}
371
494
372
495
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
376
499
}
377
500
378
501
if(debug){
379
if(if_indextoname(if_index, interface) == NULL){
380
if(debug){
381
perror("if_indextoname");
382
}
502
if(if_indextoname((unsigned int)if_index, interface) == NULL){
503
perror("if_indextoname");
383
504
return -1;
384
505
}
385
386
506
fprintf(stderr, "Binding to interface %s\n", interface);
387
507
}
388
508
389
509
memset(&to,0,sizeof(to)); /* Spurious warning */
390
to.sin6_family = AF_INET6;
391
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
510
to.in6.sin6_family = AF_INET6;
511
/* It would be nice to have a way to detect if we were passed an
512
IPv4 address here. Now we assume an IPv6 address. */
513
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
392
514
if (ret < 0 ){
393
515
perror("inet_pton");
394
516
return -1;
395
}
517
}
396
518
if(ret == 0){
397
519
fprintf(stderr, "Bad address: %s\n", ip);
398
520
return -1;
399
521
}
400
to.sin6_port = htons(port); /* Spurious warning */
522
to.in6.sin6_port = htons(port); /* Spurious warning */
401
523
402
to.sin6_scope_id = (uint32_t)if_index;
524
to.in6.sin6_scope_id = (uint32_t)if_index;
403
525
404
526
if(debug){
405
fprintf(stderr, "Connection to: %s\n", ip);
527
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
528
char addrstr[INET6_ADDRSTRLEN] = "";
529
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
530
sizeof(addrstr)) == NULL){
531
perror("inet_ntop");
532
} else {
533
if(strcmp(addrstr, ip) != 0){
534
fprintf(stderr, "Canonical address form: %s\n", addrstr);
535
}
536
}
406
537
}
407
538
408
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
539
ret = connect(tcp_sd, &to.in, sizeof(to));
409
540
if (ret < 0){
410
541
perror("connect");
411
542
return -1;
412
543
}
413
414
ret = initgnutls (&es);
415
if (ret != 0){
416
retval = -1;
417
return -1;
544
545
const char *out = mandos_protocol_version;
546
written = 0;
547
while (true){
548
size_t out_size = strlen(out);
549
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
550
out_size - written));
551
if (ret == -1){
552
perror("write");
553
retval = -1;
554
goto mandos_end;
555
}
556
written += (size_t)ret;
557
if(written < out_size){
558
continue;
559
} else {
560
if (out == mandos_protocol_version){
561
written = 0;
562
out = "\r\n";
563
} else {
564
break;
565
}
566
}
418
567
}
419
420
gnutls_transport_set_ptr (es.session,
421
(gnutls_transport_ptr_t) tcp_sd);
422
568
423
569
if(debug){
424
570
fprintf(stderr, "Establishing TLS session with %s\n", ip);
425
571
}
426
572
427
ret = gnutls_handshake (es.session);
573
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
574
575
ret = gnutls_handshake (session);
428
576
429
577
if (ret != GNUTLS_E_SUCCESS){
430
578
if(debug){
431
fprintf(stderr, "\n*** Handshake failed ***\n");
579
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
432
580
gnutls_perror (ret);
433
581
}
434
582
retval = -1;
435
goto exit;
583
goto mandos_end;
436
584
}
437
585
438
//Retrieve OpenPGP packet that contains the wanted password
586
/* Read OpenPGP packet that contains the wanted password */
439
587
440
588
if(debug){
441
589
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
443
591
}
444
592
445
593
while(true){
446
if (buffer_length + BUFFER_SIZE > buffer_capacity){
447
buffer = realloc(buffer, buffer_capacity + BUFFER_SIZE);
448
if (buffer == NULL){
449
perror("realloc");
450
goto exit;
451
}
452
buffer_capacity += BUFFER_SIZE;
594
buffer_capacity = adjustbuffer(&buffer, buffer_length,
595
buffer_capacity);
596
if (buffer_capacity == 0){
597
perror("adjustbuffer");
598
retval = -1;
599
goto mandos_end;
453
600
}
454
601
455
ret = gnutls_record_recv
456
(es.session, buffer+buffer_length, BUFFER_SIZE);
602
ret = gnutls_record_recv(session, buffer+buffer_length,
603
BUFFER_SIZE);
457
604
if (ret == 0){
458
605
break;
459
606
}
463
610
case GNUTLS_E_AGAIN:
464
611
break;
465
612
case GNUTLS_E_REHANDSHAKE:
466
ret = gnutls_handshake (es.session);
613
ret = gnutls_handshake (session);
467
614
if (ret < 0){
468
fprintf(stderr, "\n*** Handshake failed ***\n");
615
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
469
616
gnutls_perror (ret);
470
617
retval = -1;
471
goto exit;
618
goto mandos_end;
472
619
}
473
620
break;
474
621
default:
475
622
fprintf(stderr, "Unknown error while reading data from"
476
" encrypted session with mandos server\n");
623
" encrypted session with Mandos server\n");
477
624
retval = -1;
478
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
479
goto exit;
625
gnutls_bye (session, GNUTLS_SHUT_RDWR);
626
goto mandos_end;
480
627
}
481
628
} else {
482
629
buffer_length += (size_t) ret;
483
630
}
484
631
}
485
632
633
if(debug){
634
fprintf(stderr, "Closing TLS session\n");
635
}
636
637
gnutls_bye (session, GNUTLS_SHUT_RDWR);
638
486
639
if (buffer_length > 0){
487
640
decrypted_buffer_size = pgp_packet_decrypt(buffer,
488
641
buffer_length,
489
642
&decrypted_buffer,
490
certdir);
643
keydir);
491
644
if (decrypted_buffer_size >= 0){
492
while(written < (size_t)decrypted_buffer_size){
645
written = 0;
646
while(written < (size_t) decrypted_buffer_size){
493
647
ret = (int)fwrite (decrypted_buffer + written, 1,
494
648
(size_t)decrypted_buffer_size - written,
495
649
stdout);
508
662
retval = -1;
509
663
}
510
664
}
511
512
//shutdown procedure
513
514
if(debug){
515
fprintf(stderr, "Closing TLS session\n");
516
}
517
665
666
/* Shutdown procedure */
667
668
mandos_end:
518
669
free(buffer);
519
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
520
exit:
521
670
close(tcp_sd);
522
gnutls_deinit (es.session);
523
gnutls_certificate_free_credentials (es.cred);
524
gnutls_global_deinit ();
671
gnutls_deinit (session);
525
672
return retval;
526
673
}
527
674
528
static AvahiSimplePoll *simple_poll = NULL;
529
static AvahiServer *server = NULL;
530
531
static void resolve_callback(
532
AvahiSServiceResolver *r,
533
AvahiIfIndex interface,
534
AVAHI_GCC_UNUSED AvahiProtocol protocol,
535
AvahiResolverEvent event,
536
const char *name,
537
const char *type,
538
const char *domain,
539
const char *host_name,
540
const AvahiAddress *address,
541
uint16_t port,
542
AVAHI_GCC_UNUSED AvahiStringList *txt,
543
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
544
AVAHI_GCC_UNUSED void* userdata) {
545
675
static void resolve_callback(AvahiSServiceResolver *r,
676
AvahiIfIndex interface,
677
AVAHI_GCC_UNUSED AvahiProtocol protocol,
678
AvahiResolverEvent event,
679
const char *name,
680
const char *type,
681
const char *domain,
682
const char *host_name,
683
const AvahiAddress *address,
684
uint16_t port,
685
AVAHI_GCC_UNUSED AvahiStringList *txt,
686
AVAHI_GCC_UNUSED AvahiLookupResultFlags
687
flags,
688
void* userdata) {
689
mandos_context *mc = userdata;
546
690
assert(r); /* Spurious warning */
547
691
548
692
/* Called whenever a service has been resolved successfully or
551
695
switch (event) {
552
696
default:
553
697
case AVAHI_RESOLVER_FAILURE:
554
fprintf(stderr, "(Resolver) Failed to resolve service '%s' of"
555
" type '%s' in domain '%s': %s\n", name, type, domain,
556
avahi_strerror(avahi_server_errno(server)));
698
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
699
" of type '%s' in domain '%s': %s\n", name, type, domain,
700
avahi_strerror(avahi_server_errno(mc->server)));
557
701
break;
558
702
559
703
case AVAHI_RESOLVER_FOUND:
561
705
char ip[AVAHI_ADDRESS_STR_MAX];
562
706
avahi_address_snprint(ip, sizeof(ip), address);
563
707
if(debug){
564
fprintf(stderr, "Mandos server \"%s\" found on %s (%s) on"
565
" port %d\n", name, host_name, ip, port);
708
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
709
" port %d\n", name, host_name, ip, interface, port);
566
710
}
567
int ret = start_mandos_communication(ip, port,
568
(unsigned int) interface);
711
int ret = start_mandos_communication(ip, port, interface, mc);
569
712
if (ret == 0){
570
713
exit(EXIT_SUCCESS);
571
714
}
574
717
avahi_s_service_resolver_free(r);
575
718
}
576
719
577
static void browse_callback(
578
AvahiSServiceBrowser *b,
579
AvahiIfIndex interface,
580
AvahiProtocol protocol,
581
AvahiBrowserEvent event,
582
const char *name,
583
const char *type,
584
const char *domain,
585
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
586
void* userdata) {
587
588
AvahiServer *s = userdata;
589
assert(b); /* Spurious warning */
590
591
/* Called whenever a new services becomes available on the LAN or
592
is removed from the LAN */
593
594
switch (event) {
595
default:
596
case AVAHI_BROWSER_FAILURE:
597
598
fprintf(stderr, "(Browser) %s\n",
599
avahi_strerror(avahi_server_errno(server)));
600
avahi_simple_poll_quit(simple_poll);
601
return;
602
603
case AVAHI_BROWSER_NEW:
604
/* We ignore the returned resolver object. In the callback
605
function we free it. If the server is terminated before
606
the callback function is called the server will free
607
the resolver for us. */
608
609
if (!(avahi_s_service_resolver_new(s, interface, protocol, name,
610
type, domain,
611
AVAHI_PROTO_INET6, 0,
612
resolve_callback, s)))
613
fprintf(stderr, "Failed to resolve service '%s': %s\n", name,
614
avahi_strerror(avahi_server_errno(s)));
615
break;
616
617
case AVAHI_BROWSER_REMOVE:
618
break;
619
620
case AVAHI_BROWSER_ALL_FOR_NOW:
621
case AVAHI_BROWSER_CACHE_EXHAUSTED:
622
break;
720
static void browse_callback( AvahiSServiceBrowser *b,
721
AvahiIfIndex interface,
722
AvahiProtocol protocol,
723
AvahiBrowserEvent event,
724
const char *name,
725
const char *type,
726
const char *domain,
727
AVAHI_GCC_UNUSED AvahiLookupResultFlags
728
flags,
729
void* userdata) {
730
mandos_context *mc = userdata;
731
assert(b); /* Spurious warning */
732
733
/* Called whenever a new services becomes available on the LAN or
734
is removed from the LAN */
735
736
switch (event) {
737
default:
738
case AVAHI_BROWSER_FAILURE:
739
740
fprintf(stderr, "(Avahi browser) %s\n",
741
avahi_strerror(avahi_server_errno(mc->server)));
742
avahi_simple_poll_quit(mc->simple_poll);
743
return;
744
745
case AVAHI_BROWSER_NEW:
746
/* We ignore the returned Avahi resolver object. In the callback
747
function we free it. If the Avahi server is terminated before
748
the callback function is called the Avahi server will free the
749
resolver for us. */
750
751
if (!(avahi_s_service_resolver_new(mc->server, interface,
752
protocol, name, type, domain,
753
AVAHI_PROTO_INET6, 0,
754
resolve_callback, mc)))
755
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
756
name, avahi_strerror(avahi_server_errno(mc->server)));
757
break;
758
759
case AVAHI_BROWSER_REMOVE:
760
break;
761
762
case AVAHI_BROWSER_ALL_FOR_NOW:
763
case AVAHI_BROWSER_CACHE_EXHAUSTED:
764
if(debug){
765
fprintf(stderr, "No Mandos server found, still searching...\n");
623
766
}
767
break;
768
}
624
769
}
625
770
626
/* combinds file name and path and returns the malloced new string. som sane checks could/should be added */
627
const char *combinepath(const char *first, const char *second){
628
char *tmp;
629
tmp = malloc(strlen(first) + strlen(second) + 2);
771
/* Combines file name and path and returns the malloced new
772
string. some sane checks could/should be added */
773
static const char *combinepath(const char *first, const char *second){
774
size_t f_len = strlen(first);
775
size_t s_len = strlen(second);
776
char *tmp = malloc(f_len + s_len + 2);
630
777
if (tmp == NULL){
631
perror("malloc");
632
778
return NULL;
633
779
}
634
strcpy(tmp, first);
635
if (first[0] != '\0' and first[strlen(first) - 1] != '/'){
636
strcat(tmp, "/");
637
}
638
strcat(tmp, second);
780
if(f_len > 0){
781
memcpy(tmp, first, f_len); /* Spurious warning */
782
}
783
tmp[f_len] = '/';
784
if(s_len > 0){
785
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
786
}
787
tmp[f_len + 1 + s_len] = '\0';
639
788
return tmp;
640
789
}
641
790
642
791
643
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
644
AvahiServerConfig config;
792
int main(int argc, char *argv[]){
645
793
AvahiSServiceBrowser *sb = NULL;
646
794
int error;
647
795
int ret;
648
int returncode = EXIT_SUCCESS;
796
int exitcode = EXIT_SUCCESS;
649
797
const char *interface = "eth0";
650
798
struct ifreq network;
651
799
int sd;
652
653
while (true){
654
static struct option long_options[] = {
655
{"debug", no_argument, (int *)&debug, 1},
656
{"interface", required_argument, 0, 'i'},
657
{"certdir", required_argument, 0, 'd'},
658
{"certkey", required_argument, 0, 'c'},
659
{"certfile", required_argument, 0, 'k'},
660
{0, 0, 0, 0} };
661
662
int option_index = 0;
663
ret = getopt_long (argc, argv, "i:", long_options,
664
&option_index);
665
666
if (ret == -1){
667
break;
668
}
669
670
switch(ret){
671
case 0:
672
break;
673
case 'i':
674
interface = optarg;
675
break;
676
case 'd':
677
certdir = optarg;
678
break;
679
case 'c':
680
certfile = optarg;
681
break;
682
case 'k':
683
certkey = optarg;
684
break;
685
default:
686
exit(EXIT_FAILURE);
687
}
688
}
689
690
certfile = combinepath(certdir, certfile);
691
if (certfile == NULL){
692
returncode = EXIT_FAILURE;
693
goto exit;
694
}
695
696
certkey = combinepath(certdir, certkey);
697
if (certkey == NULL){
698
returncode = EXIT_FAILURE;
699
goto exit;
700
}
701
702
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
703
if(sd < 0) {
704
perror("socket");
705
returncode = EXIT_FAILURE;
706
goto exit;
707
}
708
strcpy(network.ifr_name, interface);
709
ret = ioctl(sd, SIOCGIFFLAGS, &network);
710
if(ret == -1){
711
712
perror("ioctl SIOCGIFFLAGS");
713
returncode = EXIT_FAILURE;
714
goto exit;
715
}
716
if((network.ifr_flags & IFF_UP) == 0){
717
network.ifr_flags |= IFF_UP;
718
ret = ioctl(sd, SIOCSIFFLAGS, &network);
800
uid_t uid;
801
gid_t gid;
802
char *connect_to = NULL;
803
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
804
const char *pubkeyfile = "pubkey.txt";
805
const char *seckeyfile = "seckey.txt";
806
mandos_context mc = { .simple_poll = NULL, .server = NULL,
807
.dh_bits = 1024, .priority = "SECURE256"};
808
bool gnutls_initalized = false;
809
810
{
811
struct argp_option options[] = {
812
{ .name = "debug", .key = 128,
813
.doc = "Debug mode", .group = 3 },
814
{ .name = "connect", .key = 'c',
815
.arg = "IP",
816
.doc = "Connect directly to a sepcified mandos server",
817
.group = 1 },
818
{ .name = "interface", .key = 'i',
819
.arg = "INTERFACE",
820
.doc = "Interface that Avahi will conntect through",
821
.group = 1 },
822
{ .name = "keydir", .key = 'd',
823
.arg = "KEYDIR",
824
.doc = "Directory where the openpgp keyring is",
825
.group = 1 },
826
{ .name = "seckey", .key = 's',
827
.arg = "SECKEY",
828
.doc = "Secret openpgp key for gnutls authentication",
829
.group = 1 },
830
{ .name = "pubkey", .key = 'p',
831
.arg = "PUBKEY",
832
.doc = "Public openpgp key for gnutls authentication",
833
.group = 2 },
834
{ .name = "dh-bits", .key = 129,
835
.arg = "BITS",
836
.doc = "dh-bits to use in gnutls communication",
837
.group = 2 },
838
{ .name = "priority", .key = 130,
839
.arg = "PRIORITY",
840
.doc = "GNUTLS priority", .group = 1 },
841
{ .name = NULL }
842
};
843
844
845
error_t parse_opt (int key, char *arg,
846
struct argp_state *state) {
847
/* Get the INPUT argument from `argp_parse', which we know is
848
a pointer to our plugin list pointer. */
849
switch (key) {
850
case 128:
851
debug = true;
852
break;
853
case 'c':
854
connect_to = arg;
855
break;
856
case 'i':
857
interface = arg;
858
break;
859
case 'd':
860
keydir = arg;
861
break;
862
case 's':
863
seckeyfile = arg;
864
break;
865
case 'p':
866
pubkeyfile = arg;
867
break;
868
case 129:
869
errno = 0;
870
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
871
if (errno){
872
perror("strtol");
873
exit(EXIT_FAILURE);
874
}
875
break;
876
case 130:
877
mc.priority = arg;
878
break;
879
case ARGP_KEY_ARG:
880
argp_usage (state);
881
break;
882
case ARGP_KEY_END:
883
break;
884
default:
885
return ARGP_ERR_UNKNOWN;
886
}
887
return 0;
888
}
889
890
struct argp argp = { .options = options, .parser = parse_opt,
891
.args_doc = "",
892
.doc = "Mandos client -- Get and decrypt"
893
" passwords from mandos server" };
894
argp_parse (&argp, argc, argv, 0, 0, NULL);
895
}
896
897
pubkeyfile = combinepath(keydir, pubkeyfile);
898
if (pubkeyfile == NULL){
899
perror("combinepath");
900
exitcode = EXIT_FAILURE;
901
goto end;
902
}
903
904
seckeyfile = combinepath(keydir, seckeyfile);
905
if (seckeyfile == NULL){
906
perror("combinepath");
907
goto end;
908
}
909
910
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
911
if (ret == -1){
912
fprintf(stderr, "init_gnutls_global\n");
913
goto end;
914
} else {
915
gnutls_initalized = true;
916
}
917
918
uid = getuid();
919
gid = getgid();
920
921
ret = setuid(uid);
922
if (ret == -1){
923
perror("setuid");
924
}
925
926
setgid(gid);
927
if (ret == -1){
928
perror("setgid");
929
}
930
931
if_index = (AvahiIfIndex) if_nametoindex(interface);
932
if(if_index == 0){
933
fprintf(stderr, "No such interface: \"%s\"\n", interface);
934
exit(EXIT_FAILURE);
935
}
936
937
if(connect_to != NULL){
938
/* Connect directly, do not use Zeroconf */
939
/* (Mainly meant for debugging) */
940
char *address = strrchr(connect_to, ':');
941
if(address == NULL){
942
fprintf(stderr, "No colon in address\n");
943
exitcode = EXIT_FAILURE;
944
goto end;
945
}
946
errno = 0;
947
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
948
if(errno){
949
perror("Bad port number");
950
exitcode = EXIT_FAILURE;
951
goto end;
952
}
953
*address = '\0';
954
address = connect_to;
955
ret = start_mandos_communication(address, port, if_index, &mc);
956
if(ret < 0){
957
exitcode = EXIT_FAILURE;
958
} else {
959
exitcode = EXIT_SUCCESS;
960
}
961
goto end;
962
}
963
964
/* If the interface is down, bring it up */
965
{
966
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
967
if(sd < 0) {
968
perror("socket");
969
exitcode = EXIT_FAILURE;
970
goto end;
971
}
972
strcpy(network.ifr_name, interface); /* Spurious warning */
973
ret = ioctl(sd, SIOCGIFFLAGS, &network);
719
974
if(ret == -1){
720
perror("ioctl SIOCSIFFLAGS");
721
returncode = EXIT_FAILURE;
722
goto exit;
723
}
975
perror("ioctl SIOCGIFFLAGS");
976
exitcode = EXIT_FAILURE;
977
goto end;
978
}
979
if((network.ifr_flags & IFF_UP) == 0){
980
network.ifr_flags |= IFF_UP;
981
ret = ioctl(sd, SIOCSIFFLAGS, &network);
982
if(ret == -1){
983
perror("ioctl SIOCSIFFLAGS");
984
exitcode = EXIT_FAILURE;
985
goto end;
986
}
987
}
988
close(sd);
724
989
}
725
close(sd);
726
990
727
991
if (not debug){
728
992
avahi_set_log_function(empty_log);
729
993
}
730
994
731
/* Initialize the psuedo-RNG */
995
/* Initialize the pseudo-RNG for Avahi */
732
996
srand((unsigned int) time(NULL));
733
734
/* Allocate main loop object */
735
if (!(simple_poll = avahi_simple_poll_new())) {
736
fprintf(stderr, "Failed to create simple poll object.\n");
737
returncode = EXIT_FAILURE;
738
goto exit;
739
}
740
741
/* Do not publish any local records */
742
avahi_server_config_init(&config);
743
config.publish_hinfo = 0;
744
config.publish_addresses = 0;
745
config.publish_workstation = 0;
746
config.publish_domain = 0;
747
748
/* Allocate a new server */
749
server = avahi_server_new(avahi_simple_poll_get(simple_poll),
750
&config, NULL, NULL, &error);
751
752
/* Free the configuration data */
753
avahi_server_config_free(&config);
754
755
/* Check if creating the server object succeeded */
756
if (!server) {
757
fprintf(stderr, "Failed to create server: %s\n",
997
998
/* Allocate main Avahi loop object */
999
mc.simple_poll = avahi_simple_poll_new();
1000
if (mc.simple_poll == NULL) {
1001
fprintf(stderr, "Avahi: Failed to create simple poll"
1002
" object.\n");
1003
exitcode = EXIT_FAILURE;
1004
goto end;
1005
}
1006
1007
{
1008
AvahiServerConfig config;
1009
/* Do not publish any local Zeroconf records */
1010
avahi_server_config_init(&config);
1011
config.publish_hinfo = 0;
1012
config.publish_addresses = 0;
1013
config.publish_workstation = 0;
1014
config.publish_domain = 0;
1015
1016
/* Allocate a new server */
1017
mc.server = avahi_server_new(avahi_simple_poll_get
1018
(mc.simple_poll), &config, NULL,
1019
NULL, &error);
1020
1021
/* Free the Avahi configuration data */
1022
avahi_server_config_free(&config);
1023
}
1024
1025
/* Check if creating the Avahi server object succeeded */
1026
if (mc.server == NULL) {
1027
fprintf(stderr, "Failed to create Avahi server: %s\n",
758
1028
avahi_strerror(error));
759
returncode = EXIT_FAILURE;
760
goto exit;
1029
exitcode = EXIT_FAILURE;
1030
goto end;
761
1031
}
762
1032
763
/* Create the service browser */
764
sb = avahi_s_service_browser_new(server,
765
(AvahiIfIndex)
766
if_nametoindex(interface),
1033
/* Create the Avahi service browser */
1034
sb = avahi_s_service_browser_new(mc.server, if_index,
767
1035
AVAHI_PROTO_INET6,
768
1036
"_mandos._tcp", NULL, 0,
769
browse_callback, server);
770
if (!sb) {
1037
browse_callback, &mc);
1038
if (sb == NULL) {
771
1039
fprintf(stderr, "Failed to create service browser: %s\n",
772
avahi_strerror(avahi_server_errno(server)));
773
returncode = EXIT_FAILURE;
774
goto exit;
1040
avahi_strerror(avahi_server_errno(mc.server)));
1041
exitcode = EXIT_FAILURE;
1042
goto end;
775
1043
}
776
1044
777
1045
/* Run the main loop */
778
1046
779
1047
if (debug){
780
fprintf(stderr, "Starting avahi loop search\n");
1048
fprintf(stderr, "Starting Avahi loop search\n");
781
1049
}
782
1050
783
avahi_simple_poll_loop(simple_poll);
1051
avahi_simple_poll_loop(mc.simple_poll);
784
1052
785
exit:
1053
end:
786
1054
787
1055
if (debug){
788
1056
fprintf(stderr, "%s exiting\n", argv[0]);
789
1057
}
790
1058
791
1059
/* Cleanup things */
792
if (sb)
1060
if (sb != NULL)
793
1061
avahi_s_service_browser_free(sb);
794
1062
795
if (server)
796
avahi_server_free(server);
797
798
if (simple_poll)
799
avahi_simple_poll_free(simple_poll);
800
free(certfile);
801
free(certkey);
1063
if (mc.server != NULL)
1064
avahi_server_free(mc.server);
1065
1066
if (mc.simple_poll != NULL)
1067
avahi_simple_poll_free(mc.simple_poll);
1068
free(pubkeyfile);
1069
free(seckeyfile);
1070
1071
if (gnutls_initalized){
1072
gnutls_certificate_free_credentials (mc.cred);
1073
gnutls_global_deinit ();
1074
}
802
1075
803
return returncode;
1076
return exitcode;
804
1077
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0