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- Committer: Björn Påhlsson
- Date: 2008-08-02 14:48:45 UTC
- mto: (24.1.154 mandos) (237.4.3 mandos-release)
- mto: This revision was merged to the branch mainline in revision 38.
- Revision ID: belorn@braxen-20080802144845-sd6z98g9poztxffs
plugbasedclient
change uid to nobody:nogroup as default for all plugins
mandosclient
Takes up the interface if needed
change uid to nobody:nogroup as default for all plugins
mandosclient
Takes up the interface if needed
- files added:
- ca.pem
- files removed:
- COPYING
- files renamed:
- clients.conf => mandos-clients.conf
- plugin-runner.c => plugbasedclient.c
- plugins.d/password-request.c => plugins.d/mandosclient.c
- plugins.d/password-prompt.c => plugins.d/passprompt.c
- mandos => server.py
- files modified:
- Makefile
added
removed
plugins.d/mandosclient.c
8
8
* includes the following functions: "resolve_callback",
9
9
* "browse_callback", and parts of "main".
10
10
*
11
* Everything else is
12
* Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
11
* Everything else is Copyright © 2007-2008 Teddy Hogeborn and Björn
12
* 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 <mandos@fukt.bsnet.se>.
28
* Contact the authors at <https://www.fukt.bsnet.se/~belorn/> and
29
* <https://www.fukt.bsnet.se/~teddy/>.
29
30
*/
30
31
31
/* Needed by GPGME, specifically gpgme_data_seek() */
32
#define _FORTIFY_SOURCE 2
33
32
34
#define _LARGEFILE_SOURCE
33
35
#define _FILE_OFFSET_BITS 64
34
36
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
36
37
#include <stdio.h> /* fprintf(), stderr, fwrite(),
38
stdout, ferror() */
39
#include <stdint.h> /* uint16_t, uint32_t */
40
#include <stddef.h> /* NULL, size_t, ssize_t */
41
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
42
srand() */
43
#include <stdbool.h> /* bool, true */
44
#include <string.h> /* memset(), strcmp(), strlen(),
45
strerror(), asprintf(), strcpy() */
46
#include <sys/ioctl.h> /* ioctl */
47
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
48
sockaddr_in6, PF_INET6,
49
SOCK_STREAM, INET6_ADDRSTRLEN,
50
uid_t, gid_t */
51
#include <inttypes.h> /* PRIu16 */
52
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
53
struct in6_addr, inet_pton(),
54
connect() */
55
#include <assert.h> /* assert() */
56
#include <errno.h> /* perror(), errno */
57
#include <time.h> /* time() */
58
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
59
SIOCSIFFLAGS, if_indextoname(),
60
if_nametoindex(), IF_NAMESIZE */
61
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
62
getuid(), getgid(), setuid(),
63
setgid() */
64
#include <netinet/in.h>
65
#include <arpa/inet.h> /* inet_pton(), htons */
66
#include <iso646.h> /* not, and */
67
#include <argp.h> /* struct argp_option, error_t, struct
68
argp_state, struct argp,
69
argp_parse(), ARGP_KEY_ARG,
70
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
71
72
/* Avahi */
73
/* All Avahi types, constants and functions
74
Avahi*, avahi_*,
75
AVAHI_* */
37
#include <stdio.h>
38
#include <assert.h>
39
#include <stdlib.h>
40
#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
44
76
45
#include <avahi-core/core.h>
77
46
#include <avahi-core/lookup.h>
78
47
#include <avahi-core/log.h>
80
49
#include <avahi-common/malloc.h>
81
50
#include <avahi-common/error.h>
82
51
83
/* GnuTLS */
84
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
85
functions:
86
gnutls_*
87
init_gnutls_session(),
88
GNUTLS_* */
89
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
90
GNUTLS_OPENPGP_FMT_BASE64 */
91
92
/* GPGME */
93
#include <gpgme.h> /* All GPGME types, constants and
94
functions:
95
gpgme_*
96
GPGME_PROTOCOL_OpenPGP,
97
GPG_ERR_NO_* */
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>
98
72
99
73
#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";
100
79
101
80
bool debug = false;
102
static const char *keydir = "/conf/conf.d/mandos";
103
static const char mandos_protocol_version[] = "1";
104
const char *argp_program_version = "password-request 1.0";
105
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
106
81
107
/* Used for passing in values through the Avahi callback functions */
108
82
typedef struct {
109
AvahiSimplePoll *simple_poll;
110
AvahiServer *server;
83
gnutls_session_t session;
111
84
gnutls_certificate_credentials_t cred;
112
unsigned int dh_bits;
113
85
gnutls_dh_params_t dh_params;
114
const char *priority;
115
} mandos_context;
116
117
/*
118
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
119
* "buffer_capacity" is how much is currently allocated,
120
* "buffer_length" is how much is already used.
121
*/
122
size_t adjustbuffer(char **buffer, size_t buffer_length,
123
size_t buffer_capacity){
124
if (buffer_length + BUFFER_SIZE > buffer_capacity){
125
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
126
if (buffer == NULL){
127
return 0;
128
}
129
buffer_capacity += BUFFER_SIZE;
130
}
131
return buffer_capacity;
132
}
133
134
/*
135
* Decrypt OpenPGP data using keyrings in HOMEDIR.
136
* Returns -1 on error
137
*/
138
static ssize_t pgp_packet_decrypt (const char *cryptotext,
139
size_t crypto_size,
140
char **plaintext,
141
const char *homedir){
86
} encrypted_session;
87
88
89
ssize_t pgp_packet_decrypt (char *packet, size_t packet_size,
90
char **new_packet, const char *homedir){
142
91
gpgme_data_t dh_crypto, dh_plain;
143
92
gpgme_ctx_t ctx;
144
93
gpgme_error_t rc;
145
94
ssize_t ret;
146
size_t plaintext_capacity = 0;
147
ssize_t plaintext_length = 0;
95
ssize_t new_packet_capacity = 0;
96
ssize_t new_packet_length = 0;
148
97
gpgme_engine_info_t engine_info;
149
98
150
99
if (debug){
151
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
100
fprintf(stderr, "Trying to decrypt OpenPGP packet\n");
152
101
}
153
102
154
103
/* Init GPGME */
160
109
return -1;
161
110
}
162
111
163
/* Set GPGME home directory for the OpenPGP engine only */
112
/* Set GPGME home directory */
164
113
rc = gpgme_get_engine_info (&engine_info);
165
114
if (rc != GPG_ERR_NO_ERROR){
166
115
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
176
125
engine_info = engine_info->next;
177
126
}
178
127
if(engine_info == NULL){
179
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
128
fprintf(stderr, "Could not set home dir to %s\n", homedir);
180
129
return -1;
181
130
}
182
131
183
/* Create new GPGME data buffer from memory cryptotext */
184
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
185
0);
132
/* Create new GPGME data buffer from packet buffer */
133
rc = gpgme_data_new_from_mem(&dh_crypto, packet, packet_size, 0);
186
134
if (rc != GPG_ERR_NO_ERROR){
187
135
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
188
136
gpgme_strsource(rc), gpgme_strerror(rc));
194
142
if (rc != GPG_ERR_NO_ERROR){
195
143
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
196
144
gpgme_strsource(rc), gpgme_strerror(rc));
197
gpgme_data_release(dh_crypto);
198
145
return -1;
199
146
}
200
147
203
150
if (rc != GPG_ERR_NO_ERROR){
204
151
fprintf(stderr, "bad gpgme_new: %s: %s\n",
205
152
gpgme_strsource(rc), gpgme_strerror(rc));
206
plaintext_length = -1;
207
goto decrypt_end;
153
return -1;
208
154
}
209
155
210
/* Decrypt data from the cryptotext data buffer to the plaintext
211
data buffer */
156
/* Decrypt data from the FILE pointer to the plaintext data
157
buffer */
212
158
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
213
159
if (rc != GPG_ERR_NO_ERROR){
214
160
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
215
161
gpgme_strsource(rc), gpgme_strerror(rc));
216
plaintext_length = -1;
217
goto decrypt_end;
162
return -1;
218
163
}
219
164
220
165
if(debug){
221
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
166
fprintf(stderr, "Decryption of OpenPGP packet succeeded\n");
222
167
}
223
168
224
169
if (debug){
225
170
gpgme_decrypt_result_t result;
226
171
result = gpgme_op_decrypt_result(ctx);
229
174
} else {
230
175
fprintf(stderr, "Unsupported algorithm: %s\n",
231
176
result->unsupported_algorithm);
232
fprintf(stderr, "Wrong key usage: %u\n",
177
fprintf(stderr, "Wrong key usage: %d\n",
233
178
result->wrong_key_usage);
234
179
if(result->file_name != NULL){
235
180
fprintf(stderr, "File name: %s\n", result->file_name);
250
195
}
251
196
}
252
197
198
/* Delete the GPGME FILE pointer cryptotext data buffer */
199
gpgme_data_release(dh_crypto);
200
253
201
/* Seek back to the beginning of the GPGME plaintext data buffer */
254
202
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
255
203
perror("pgpme_data_seek");
256
plaintext_length = -1;
257
goto decrypt_end;
258
204
}
259
205
260
*plaintext = NULL;
206
*new_packet = 0;
261
207
while(true){
262
plaintext_capacity = adjustbuffer(plaintext,
263
(size_t)plaintext_length,
264
plaintext_capacity);
265
if (plaintext_capacity == 0){
266
perror("adjustbuffer");
267
plaintext_length = -1;
268
goto decrypt_end;
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;
269
217
}
270
218
271
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
219
ret = gpgme_data_read(dh_plain, *new_packet + new_packet_length,
272
220
BUFFER_SIZE);
273
221
/* Print the data, if any */
274
222
if (ret == 0){
275
/* EOF */
276
223
break;
277
224
}
278
225
if(ret < 0){
279
226
perror("gpgme_data_read");
280
plaintext_length = -1;
281
goto decrypt_end;
227
return -1;
282
228
}
283
plaintext_length += ret;
229
new_packet_length += ret;
284
230
}
285
231
286
if(debug){
287
fprintf(stderr, "Decrypted password is: ");
288
for(ssize_t i = 0; i < plaintext_length; i++){
289
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
290
}
291
fprintf(stderr, "\n");
292
}
293
294
decrypt_end:
295
296
/* Delete the GPGME cryptotext data buffer */
297
gpgme_data_release(dh_crypto);
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
/* } */
298
239
299
240
/* Delete the GPGME plaintext data buffer */
300
241
gpgme_data_release(dh_plain);
301
return plaintext_length;
242
return new_packet_length;
302
243
}
303
244
304
245
static const char * safer_gnutls_strerror (int value) {
305
const char *ret = gnutls_strerror (value); /* Spurious warning */
246
const char *ret = gnutls_strerror (value);
306
247
if (ret == NULL)
307
248
ret = "(unknown)";
308
249
return ret;
309
250
}
310
251
311
/* GnuTLS log function callback */
312
static void debuggnutls(__attribute__((unused)) int level,
313
const char* string){
314
fprintf(stderr, "GnuTLS: %s", string);
252
void debuggnutls(__attribute__((unused)) int level,
253
const char* string){
254
fprintf(stderr, "%s", string);
315
255
}
316
256
317
static int init_gnutls_global(mandos_context *mc,
318
const char *pubkeyfilename,
319
const char *seckeyfilename){
257
int initgnutls(encrypted_session *es){
258
const char *err;
320
259
int ret;
321
260
322
261
if(debug){
323
262
fprintf(stderr, "Initializing GnuTLS\n");
324
263
}
325
326
ret = gnutls_global_init();
327
if (ret != GNUTLS_E_SUCCESS) {
328
fprintf (stderr, "GnuTLS global_init: %s\n",
329
safer_gnutls_strerror(ret));
264
265
if ((ret = gnutls_global_init ())
266
!= GNUTLS_E_SUCCESS) {
267
fprintf (stderr, "global_init: %s\n", safer_gnutls_strerror(ret));
330
268
return -1;
331
269
}
332
270
333
271
if (debug){
334
/* "Use a log level over 10 to enable all debugging options."
335
* - GnuTLS manual
336
*/
337
272
gnutls_global_set_log_level(11);
338
273
gnutls_global_set_log_function(debuggnutls);
339
274
}
340
275
341
/* OpenPGP credentials */
342
gnutls_certificate_allocate_credentials(&mc->cred);
343
if (ret != GNUTLS_E_SUCCESS){
344
fprintf (stderr, "GnuTLS memory error: %s\n", /* Spurious
345
warning */
276
/* openpgp credentials */
277
if ((ret = gnutls_certificate_allocate_credentials (&es->cred))
278
!= GNUTLS_E_SUCCESS) {
279
fprintf (stderr, "memory error: %s\n",
346
280
safer_gnutls_strerror(ret));
347
gnutls_global_deinit ();
348
281
return -1;
349
282
}
350
283
351
284
if(debug){
352
285
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
353
" and keyfile %s as GnuTLS credentials\n", pubkeyfilename,
354
seckeyfilename);
286
" and keyfile %s as GnuTLS credentials\n", certfile,
287
certkey);
355
288
}
356
289
357
290
ret = gnutls_certificate_set_openpgp_key_file
358
(mc->cred, pubkeyfilename, seckeyfilename,
359
GNUTLS_OPENPGP_FMT_BASE64);
291
(es->cred, certfile, certkey, GNUTLS_OPENPGP_FMT_BASE64);
360
292
if (ret != GNUTLS_E_SUCCESS) {
361
fprintf(stderr,
362
"Error[%d] while reading the OpenPGP key pair ('%s',"
363
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
364
fprintf(stdout, "The GnuTLS error is: %s\n",
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",
365
298
safer_gnutls_strerror(ret));
366
goto globalfail;
367
}
368
369
/* GnuTLS server initialization */
370
ret = gnutls_dh_params_init(&mc->dh_params);
371
if (ret != GNUTLS_E_SUCCESS) {
372
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
373
" %s\n", safer_gnutls_strerror(ret));
374
goto globalfail;
375
}
376
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
377
if (ret != GNUTLS_E_SUCCESS) {
378
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
379
safer_gnutls_strerror(ret));
380
goto globalfail;
381
}
382
383
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
384
385
return 0;
386
387
globalfail:
388
389
gnutls_certificate_free_credentials(mc->cred);
390
gnutls_global_deinit();
391
return -1;
392
393
}
394
395
static int init_gnutls_session(mandos_context *mc,
396
gnutls_session_t *session){
397
int ret;
398
/* GnuTLS session creation */
399
ret = gnutls_init(session, GNUTLS_SERVER);
400
if (ret != GNUTLS_E_SUCCESS){
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){
401
322
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
402
323
safer_gnutls_strerror(ret));
403
324
}
404
325
405
{
406
const char *err;
407
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
408
if (ret != GNUTLS_E_SUCCESS) {
409
fprintf(stderr, "Syntax error at: %s\n", err);
410
fprintf(stderr, "GnuTLS error: %s\n",
411
safer_gnutls_strerror(ret));
412
gnutls_deinit (*session);
413
return -1;
414
}
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;
415
332
}
416
333
417
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
418
mc->cred);
419
if (ret != GNUTLS_E_SUCCESS) {
420
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
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",
421
338
safer_gnutls_strerror(ret));
422
gnutls_deinit (*session);
423
339
return -1;
424
340
}
425
341
426
342
/* ignore client certificate if any. */
427
gnutls_certificate_server_set_request (*session,
343
gnutls_certificate_server_set_request (es->session,
428
344
GNUTLS_CERT_IGNORE);
429
345
430
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
346
gnutls_dh_set_prime_bits (es->session, DH_BITS);
431
347
432
348
return 0;
433
349
}
434
350
435
/* Avahi log function callback */
436
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
437
__attribute__((unused)) const char *txt){}
351
void empty_log(__attribute__((unused)) AvahiLogLevel level,
352
__attribute__((unused)) const char *txt){}
438
353
439
/* Called when a Mandos server is found */
440
static int start_mandos_communication(const char *ip, uint16_t port,
441
AvahiIfIndex if_index,
442
mandos_context *mc){
354
int start_mandos_communication(const char *ip, uint16_t port,
355
unsigned int if_index){
443
356
int ret, tcp_sd;
444
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
357
struct sockaddr_in6 to;
358
encrypted_session es;
445
359
char *buffer = NULL;
446
360
char *decrypted_buffer;
447
361
size_t buffer_length = 0;
448
362
size_t buffer_capacity = 0;
449
363
ssize_t decrypted_buffer_size;
450
size_t written;
364
size_t written = 0;
451
365
int retval = 0;
452
366
char interface[IF_NAMESIZE];
453
gnutls_session_t session;
454
455
ret = init_gnutls_session (mc, &session);
456
if (ret != 0){
457
return -1;
458
}
459
367
460
368
if(debug){
461
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
462
"\n", ip, port);
369
fprintf(stderr, "Setting up a tcp connection to %s\n", ip);
463
370
}
464
371
465
372
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
469
376
}
470
377
471
378
if(debug){
472
if(if_indextoname((unsigned int)if_index, interface) == NULL){
473
perror("if_indextoname");
379
if(if_indextoname(if_index, interface) == NULL){
380
if(debug){
381
perror("if_indextoname");
382
}
474
383
return -1;
475
384
}
385
476
386
fprintf(stderr, "Binding to interface %s\n", interface);
477
387
}
478
388
479
memset(&to, 0, sizeof(to));
480
to.in6.sin6_family = AF_INET6;
481
/* It would be nice to have a way to detect if we were passed an
482
IPv4 address here. Now we assume an IPv6 address. */
483
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
389
memset(&to,0,sizeof(to)); /* Spurious warning */
390
to.sin6_family = AF_INET6;
391
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
484
392
if (ret < 0 ){
485
393
perror("inet_pton");
486
394
return -1;
487
}
395
}
488
396
if(ret == 0){
489
397
fprintf(stderr, "Bad address: %s\n", ip);
490
398
return -1;
491
399
}
492
to.in6.sin6_port = htons(port); /* Spurious warning */
400
to.sin6_port = htons(port); /* Spurious warning */
493
401
494
to.in6.sin6_scope_id = (uint32_t)if_index;
402
to.sin6_scope_id = (uint32_t)if_index;
495
403
496
404
if(debug){
497
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
498
port);
499
char addrstr[INET6_ADDRSTRLEN] = "";
500
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
501
sizeof(addrstr)) == NULL){
502
perror("inet_ntop");
503
} else {
504
if(strcmp(addrstr, ip) != 0){
505
fprintf(stderr, "Canonical address form: %s\n", addrstr);
506
}
507
}
405
fprintf(stderr, "Connection to: %s\n", ip);
508
406
}
509
407
510
ret = connect(tcp_sd, &to.in, sizeof(to));
408
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
511
409
if (ret < 0){
512
410
perror("connect");
513
411
return -1;
514
412
}
515
516
const char *out = mandos_protocol_version;
517
written = 0;
518
while (true){
519
size_t out_size = strlen(out);
520
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
521
out_size - written));
522
if (ret == -1){
523
perror("write");
524
retval = -1;
525
goto mandos_end;
526
}
527
written += (size_t)ret;
528
if(written < out_size){
529
continue;
530
} else {
531
if (out == mandos_protocol_version){
532
written = 0;
533
out = "\r\n";
534
} else {
535
break;
536
}
537
}
413
414
ret = initgnutls (&es);
415
if (ret != 0){
416
retval = -1;
417
return -1;
538
418
}
539
419
420
gnutls_transport_set_ptr (es.session,
421
(gnutls_transport_ptr_t) tcp_sd);
422
540
423
if(debug){
541
424
fprintf(stderr, "Establishing TLS session with %s\n", ip);
542
425
}
543
426
544
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
545
546
do{
547
ret = gnutls_handshake (session);
548
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
427
ret = gnutls_handshake (es.session);
549
428
550
429
if (ret != GNUTLS_E_SUCCESS){
551
430
if(debug){
552
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
431
fprintf(stderr, "\n*** Handshake failed ***\n");
553
432
gnutls_perror (ret);
554
433
}
555
434
retval = -1;
556
goto mandos_end;
435
goto exit;
557
436
}
558
437
559
/* Read OpenPGP packet that contains the wanted password */
438
//Retrieve OpenPGP packet that contains the wanted password
560
439
561
440
if(debug){
562
441
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
564
443
}
565
444
566
445
while(true){
567
buffer_capacity = adjustbuffer(&buffer, buffer_length,
568
buffer_capacity);
569
if (buffer_capacity == 0){
570
perror("adjustbuffer");
571
retval = -1;
572
goto mandos_end;
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;
573
453
}
574
454
575
ret = gnutls_record_recv(session, buffer+buffer_length,
576
BUFFER_SIZE);
455
ret = gnutls_record_recv
456
(es.session, buffer+buffer_length, BUFFER_SIZE);
577
457
if (ret == 0){
578
458
break;
579
459
}
583
463
case GNUTLS_E_AGAIN:
584
464
break;
585
465
case GNUTLS_E_REHANDSHAKE:
586
do{
587
ret = gnutls_handshake (session);
588
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
466
ret = gnutls_handshake (es.session);
589
467
if (ret < 0){
590
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
468
fprintf(stderr, "\n*** Handshake failed ***\n");
591
469
gnutls_perror (ret);
592
470
retval = -1;
593
goto mandos_end;
471
goto exit;
594
472
}
595
473
break;
596
474
default:
597
475
fprintf(stderr, "Unknown error while reading data from"
598
" encrypted session with Mandos server\n");
476
" encrypted session with mandos server\n");
599
477
retval = -1;
600
gnutls_bye (session, GNUTLS_SHUT_RDWR);
601
goto mandos_end;
478
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
479
goto exit;
602
480
}
603
481
} else {
604
482
buffer_length += (size_t) ret;
605
483
}
606
484
}
607
485
608
if(debug){
609
fprintf(stderr, "Closing TLS session\n");
610
}
611
612
gnutls_bye (session, GNUTLS_SHUT_RDWR);
613
614
486
if (buffer_length > 0){
615
487
decrypted_buffer_size = pgp_packet_decrypt(buffer,
616
488
buffer_length,
617
489
&decrypted_buffer,
618
keydir);
490
certdir);
619
491
if (decrypted_buffer_size >= 0){
620
written = 0;
621
while(written < (size_t) decrypted_buffer_size){
492
while(written < (size_t)decrypted_buffer_size){
622
493
ret = (int)fwrite (decrypted_buffer + written, 1,
623
494
(size_t)decrypted_buffer_size - written,
624
495
stdout);
637
508
retval = -1;
638
509
}
639
510
}
640
641
/* Shutdown procedure */
642
643
mandos_end:
511
512
//shutdown procedure
513
514
if(debug){
515
fprintf(stderr, "Closing TLS session\n");
516
}
517
644
518
free(buffer);
519
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
520
exit:
645
521
close(tcp_sd);
646
gnutls_deinit (session);
522
gnutls_deinit (es.session);
523
gnutls_certificate_free_credentials (es.cred);
524
gnutls_global_deinit ();
647
525
return retval;
648
526
}
649
527
650
static void resolve_callback(AvahiSServiceResolver *r,
651
AvahiIfIndex interface,
652
AVAHI_GCC_UNUSED AvahiProtocol protocol,
653
AvahiResolverEvent event,
654
const char *name,
655
const char *type,
656
const char *domain,
657
const char *host_name,
658
const AvahiAddress *address,
659
uint16_t port,
660
AVAHI_GCC_UNUSED AvahiStringList *txt,
661
AVAHI_GCC_UNUSED AvahiLookupResultFlags
662
flags,
663
void* userdata) {
664
mandos_context *mc = userdata;
665
assert(r);
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
546
assert(r); /* Spurious warning */
666
547
667
548
/* Called whenever a service has been resolved successfully or
668
549
timed out */
670
551
switch (event) {
671
552
default:
672
553
case AVAHI_RESOLVER_FAILURE:
673
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
674
" of type '%s' in domain '%s': %s\n", name, type, domain,
675
avahi_strerror(avahi_server_errno(mc->server)));
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)));
676
557
break;
677
558
678
559
case AVAHI_RESOLVER_FOUND:
680
561
char ip[AVAHI_ADDRESS_STR_MAX];
681
562
avahi_address_snprint(ip, sizeof(ip), address);
682
563
if(debug){
683
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
684
PRIu16 ") on port %d\n", name, host_name, ip,
685
interface, port);
564
fprintf(stderr, "Mandos server \"%s\" found on %s (%s) on"
565
" port %d\n", name, host_name, ip, port);
686
566
}
687
int ret = start_mandos_communication(ip, port, interface, mc);
567
int ret = start_mandos_communication(ip, port,
568
(unsigned int) interface);
688
569
if (ret == 0){
689
avahi_simple_poll_quit(mc->simple_poll);
570
exit(EXIT_SUCCESS);
690
571
}
691
572
}
692
573
}
693
574
avahi_s_service_resolver_free(r);
694
575
}
695
576
696
static void browse_callback( AvahiSServiceBrowser *b,
697
AvahiIfIndex interface,
698
AvahiProtocol protocol,
699
AvahiBrowserEvent event,
700
const char *name,
701
const char *type,
702
const char *domain,
703
AVAHI_GCC_UNUSED AvahiLookupResultFlags
704
flags,
705
void* userdata) {
706
mandos_context *mc = userdata;
707
assert(b);
708
709
/* Called whenever a new services becomes available on the LAN or
710
is removed from the LAN */
711
712
switch (event) {
713
default:
714
case AVAHI_BROWSER_FAILURE:
715
716
fprintf(stderr, "(Avahi browser) %s\n",
717
avahi_strerror(avahi_server_errno(mc->server)));
718
avahi_simple_poll_quit(mc->simple_poll);
719
return;
720
721
case AVAHI_BROWSER_NEW:
722
/* We ignore the returned Avahi resolver object. In the callback
723
function we free it. If the Avahi server is terminated before
724
the callback function is called the Avahi server will free the
725
resolver for us. */
726
727
if (!(avahi_s_service_resolver_new(mc->server, interface,
728
protocol, name, type, domain,
729
AVAHI_PROTO_INET6, 0,
730
resolve_callback, mc)))
731
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
732
name, avahi_strerror(avahi_server_errno(mc->server)));
733
break;
734
735
case AVAHI_BROWSER_REMOVE:
736
break;
737
738
case AVAHI_BROWSER_ALL_FOR_NOW:
739
case AVAHI_BROWSER_CACHE_EXHAUSTED:
740
if(debug){
741
fprintf(stderr, "No Mandos server found, still searching...\n");
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;
742
623
}
743
break;
744
}
745
624
}
746
625
747
/* Combines file name and path and returns the malloced new
748
string. some sane checks could/should be added */
749
static char *combinepath(const char *first, const char *second){
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){
750
628
char *tmp;
751
int ret = asprintf(&tmp, "%s/%s", first, second);
752
if(ret < 0){
629
tmp = malloc(strlen(first) + strlen(second) + 2);
630
if (tmp == NULL){
631
perror("malloc");
753
632
return NULL;
754
633
}
634
strcpy(tmp, first);
635
if (first[0] != '\0' and first[strlen(first) - 1] != '/'){
636
strcat(tmp, "/");
637
}
638
strcat(tmp, second);
755
639
return tmp;
756
640
}
757
641
758
642
759
int main(int argc, char *argv[]){
643
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
644
AvahiServerConfig config;
760
645
AvahiSServiceBrowser *sb = NULL;
761
646
int error;
762
647
int ret;
763
int exitcode = EXIT_SUCCESS;
648
int returncode = EXIT_SUCCESS;
764
649
const char *interface = "eth0";
765
650
struct ifreq network;
766
651
int sd;
767
uid_t uid;
768
gid_t gid;
769
char *connect_to = NULL;
770
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
771
char *pubkeyfilename = NULL;
772
char *seckeyfilename = NULL;
773
const char *pubkeyname = "pubkey.txt";
774
const char *seckeyname = "seckey.txt";
775
mandos_context mc = { .simple_poll = NULL, .server = NULL,
776
.dh_bits = 1024, .priority = "SECURE256"};
777
bool gnutls_initalized = false;
778
779
{
780
struct argp_option options[] = {
781
{ .name = "debug", .key = 128,
782
.doc = "Debug mode", .group = 3 },
783
{ .name = "connect", .key = 'c',
784
.arg = "IP",
785
.doc = "Connect directly to a sepcified mandos server",
786
.group = 1 },
787
{ .name = "interface", .key = 'i',
788
.arg = "INTERFACE",
789
.doc = "Interface that Avahi will conntect through",
790
.group = 1 },
791
{ .name = "keydir", .key = 'd',
792
.arg = "KEYDIR",
793
.doc = "Directory where the openpgp keyring is",
794
.group = 1 },
795
{ .name = "seckey", .key = 's',
796
.arg = "SECKEY",
797
.doc = "Secret openpgp key for gnutls authentication",
798
.group = 1 },
799
{ .name = "pubkey", .key = 'p',
800
.arg = "PUBKEY",
801
.doc = "Public openpgp key for gnutls authentication",
802
.group = 2 },
803
{ .name = "dh-bits", .key = 129,
804
.arg = "BITS",
805
.doc = "dh-bits to use in gnutls communication",
806
.group = 2 },
807
{ .name = "priority", .key = 130,
808
.arg = "PRIORITY",
809
.doc = "GNUTLS priority", .group = 1 },
810
{ .name = NULL }
811
};
812
813
814
error_t parse_opt (int key, char *arg,
815
struct argp_state *state) {
816
/* Get the INPUT argument from `argp_parse', which we know is
817
a pointer to our plugin list pointer. */
818
switch (key) {
819
case 128:
820
debug = true;
821
break;
822
case 'c':
823
connect_to = arg;
824
break;
825
case 'i':
826
interface = arg;
827
break;
828
case 'd':
829
keydir = arg;
830
break;
831
case 's':
832
seckeyname = arg;
833
break;
834
case 'p':
835
pubkeyname = arg;
836
break;
837
case 129:
838
errno = 0;
839
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
840
if (errno){
841
perror("strtol");
842
exit(EXIT_FAILURE);
843
}
844
break;
845
case 130:
846
mc.priority = arg;
847
break;
848
case ARGP_KEY_ARG:
849
argp_usage (state);
850
case ARGP_KEY_END:
851
break;
852
default:
853
return ARGP_ERR_UNKNOWN;
854
}
855
return 0;
856
}
857
858
struct argp argp = { .options = options, .parser = parse_opt,
859
.args_doc = "",
860
.doc = "Mandos client -- Get and decrypt"
861
" passwords from mandos server" };
862
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
863
if (ret == ARGP_ERR_UNKNOWN){
864
fprintf(stderr, "Unknown error while parsing arguments\n");
865
exitcode = EXIT_FAILURE;
866
goto end;
867
}
868
}
869
870
pubkeyfilename = combinepath(keydir, pubkeyname);
871
if (pubkeyfilename == NULL){
872
perror("combinepath");
873
exitcode = EXIT_FAILURE;
874
goto end;
875
}
876
877
seckeyfilename = combinepath(keydir, seckeyname);
878
if (seckeyfilename == NULL){
879
perror("combinepath");
880
exitcode = EXIT_FAILURE;
881
goto end;
882
}
883
884
ret = init_gnutls_global(&mc, pubkeyfilename, seckeyfilename);
885
if (ret == -1){
886
fprintf(stderr, "init_gnutls_global failed\n");
887
exitcode = EXIT_FAILURE;
888
goto end;
889
} else {
890
gnutls_initalized = true;
891
}
892
893
/* If the interface is down, bring it up */
894
{
895
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
896
if(sd < 0) {
897
perror("socket");
898
exitcode = EXIT_FAILURE;
899
goto end;
900
}
901
strcpy(network.ifr_name, interface);
902
ret = ioctl(sd, SIOCGIFFLAGS, &network);
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);
903
719
if(ret == -1){
904
perror("ioctl SIOCGIFFLAGS");
905
exitcode = EXIT_FAILURE;
906
goto end;
907
}
908
if((network.ifr_flags & IFF_UP) == 0){
909
network.ifr_flags |= IFF_UP;
910
ret = ioctl(sd, SIOCSIFFLAGS, &network);
911
if(ret == -1){
912
perror("ioctl SIOCSIFFLAGS");
913
exitcode = EXIT_FAILURE;
914
goto end;
915
}
916
}
917
close(sd);
918
}
919
920
uid = getuid();
921
gid = getgid();
922
923
ret = setuid(uid);
924
if (ret == -1){
925
perror("setuid");
926
}
927
928
setgid(gid);
929
if (ret == -1){
930
perror("setgid");
931
}
932
933
if_index = (AvahiIfIndex) if_nametoindex(interface);
934
if(if_index == 0){
935
fprintf(stderr, "No such interface: \"%s\"\n", interface);
936
exit(EXIT_FAILURE);
937
}
938
939
if(connect_to != NULL){
940
/* Connect directly, do not use Zeroconf */
941
/* (Mainly meant for debugging) */
942
char *address = strrchr(connect_to, ':');
943
if(address == NULL){
944
fprintf(stderr, "No colon in address\n");
945
exitcode = EXIT_FAILURE;
946
goto end;
947
}
948
errno = 0;
949
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
950
if(errno){
951
perror("Bad port number");
952
exitcode = EXIT_FAILURE;
953
goto end;
954
}
955
*address = '\0';
956
address = connect_to;
957
ret = start_mandos_communication(address, port, if_index, &mc);
958
if(ret < 0){
959
exitcode = EXIT_FAILURE;
960
} else {
961
exitcode = EXIT_SUCCESS;
962
}
963
goto end;
964
}
720
perror("ioctl SIOCSIFFLAGS");
721
returncode = EXIT_FAILURE;
722
goto exit;
723
}
724
}
725
close(sd);
965
726
966
727
if (not debug){
967
728
avahi_set_log_function(empty_log);
968
729
}
969
730
970
/* Initialize the pseudo-RNG for Avahi */
731
/* Initialize the psuedo-RNG */
971
732
srand((unsigned int) time(NULL));
972
973
/* Allocate main Avahi loop object */
974
mc.simple_poll = avahi_simple_poll_new();
975
if (mc.simple_poll == NULL) {
976
fprintf(stderr, "Avahi: Failed to create simple poll"
977
" object.\n");
978
exitcode = EXIT_FAILURE;
979
goto end;
980
}
981
982
{
983
AvahiServerConfig config;
984
/* Do not publish any local Zeroconf records */
985
avahi_server_config_init(&config);
986
config.publish_hinfo = 0;
987
config.publish_addresses = 0;
988
config.publish_workstation = 0;
989
config.publish_domain = 0;
990
991
/* Allocate a new server */
992
mc.server = avahi_server_new(avahi_simple_poll_get
993
(mc.simple_poll), &config, NULL,
994
NULL, &error);
995
996
/* Free the Avahi configuration data */
997
avahi_server_config_free(&config);
998
}
999
1000
/* Check if creating the Avahi server object succeeded */
1001
if (mc.server == NULL) {
1002
fprintf(stderr, "Failed to create Avahi server: %s\n",
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",
1003
758
avahi_strerror(error));
1004
exitcode = EXIT_FAILURE;
1005
goto end;
759
returncode = EXIT_FAILURE;
760
goto exit;
1006
761
}
1007
762
1008
/* Create the Avahi service browser */
1009
sb = avahi_s_service_browser_new(mc.server, if_index,
763
/* Create the service browser */
764
sb = avahi_s_service_browser_new(server,
765
(AvahiIfIndex)
766
if_nametoindex(interface),
1010
767
AVAHI_PROTO_INET6,
1011
768
"_mandos._tcp", NULL, 0,
1012
browse_callback, &mc);
1013
if (sb == NULL) {
769
browse_callback, server);
770
if (!sb) {
1014
771
fprintf(stderr, "Failed to create service browser: %s\n",
1015
avahi_strerror(avahi_server_errno(mc.server)));
1016
exitcode = EXIT_FAILURE;
1017
goto end;
772
avahi_strerror(avahi_server_errno(server)));
773
returncode = EXIT_FAILURE;
774
goto exit;
1018
775
}
1019
776
1020
777
/* Run the main loop */
1021
778
1022
779
if (debug){
1023
fprintf(stderr, "Starting Avahi loop search\n");
780
fprintf(stderr, "Starting avahi loop search\n");
1024
781
}
1025
782
1026
avahi_simple_poll_loop(mc.simple_poll);
783
avahi_simple_poll_loop(simple_poll);
1027
784
1028
end:
785
exit:
1029
786
1030
787
if (debug){
1031
788
fprintf(stderr, "%s exiting\n", argv[0]);
1032
789
}
1033
790
1034
791
/* Cleanup things */
1035
if (sb != NULL)
792
if (sb)
1036
793
avahi_s_service_browser_free(sb);
1037
794
1038
if (mc.server != NULL)
1039
avahi_server_free(mc.server);
1040
1041
if (mc.simple_poll != NULL)
1042
avahi_simple_poll_free(mc.simple_poll);
1043
free(pubkeyfilename);
1044
free(seckeyfilename);
1045
1046
if (gnutls_initalized){
1047
gnutls_certificate_free_credentials(mc.cred);
1048
gnutls_global_deinit ();
1049
}
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);
1050
802
1051
return exitcode;
803
return returncode;
1052
804
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0