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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:
- initramfs-tools-hook
- 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() */
36
37
#include <stdio.h> /* fprintf(), stderr, fwrite(), stdout,
38
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(), memcpy(), 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 functions
85
gnutls_*
86
init_gnutls_session(),
87
GNUTLS_* */
88
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
89
GNUTLS_OPENPGP_FMT_BASE64 */
90
91
/* GPGME */
92
#include <gpgme.h> /* All GPGME types, constants and functions
93
gpgme_*
94
GPGME_PROTOCOL_OpenPGP,
95
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>
96
72
97
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";
98
79
99
80
bool debug = false;
100
static const char *keydir = "/conf/conf.d/mandos";
101
static const char mandos_protocol_version[] = "1";
102
const char *argp_program_version = "password-request 1.0";
103
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
104
81
105
/* Used for passing in values through the Avahi callback functions */
106
82
typedef struct {
107
AvahiSimplePoll *simple_poll;
108
AvahiServer *server;
83
gnutls_session_t session;
109
84
gnutls_certificate_credentials_t cred;
110
unsigned int dh_bits;
111
85
gnutls_dh_params_t dh_params;
112
const char *priority;
113
} mandos_context;
114
115
/*
116
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
117
* "buffer_capacity" is how much is currently allocated,
118
* "buffer_length" is how much is already used.
119
*/
120
size_t adjustbuffer(char **buffer, size_t buffer_length,
121
size_t buffer_capacity){
122
if (buffer_length + BUFFER_SIZE > buffer_capacity){
123
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
124
if (buffer == NULL){
125
return 0;
126
}
127
buffer_capacity += BUFFER_SIZE;
128
}
129
return buffer_capacity;
130
}
131
132
/*
133
* Decrypt OpenPGP data using keyrings in HOMEDIR.
134
* Returns -1 on error
135
*/
136
static ssize_t pgp_packet_decrypt (const char *cryptotext,
137
size_t crypto_size,
138
char **plaintext,
139
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){
140
91
gpgme_data_t dh_crypto, dh_plain;
141
92
gpgme_ctx_t ctx;
142
93
gpgme_error_t rc;
143
94
ssize_t ret;
144
size_t plaintext_capacity = 0;
145
ssize_t plaintext_length = 0;
95
ssize_t new_packet_capacity = 0;
96
ssize_t new_packet_length = 0;
146
97
gpgme_engine_info_t engine_info;
147
98
148
99
if (debug){
149
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
100
fprintf(stderr, "Trying to decrypt OpenPGP packet\n");
150
101
}
151
102
152
103
/* Init GPGME */
158
109
return -1;
159
110
}
160
111
161
/* Set GPGME home directory for the OpenPGP engine only */
112
/* Set GPGME home directory */
162
113
rc = gpgme_get_engine_info (&engine_info);
163
114
if (rc != GPG_ERR_NO_ERROR){
164
115
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
174
125
engine_info = engine_info->next;
175
126
}
176
127
if(engine_info == NULL){
177
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
128
fprintf(stderr, "Could not set home dir to %s\n", homedir);
178
129
return -1;
179
130
}
180
131
181
/* Create new GPGME data buffer from memory cryptotext */
182
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
183
0);
132
/* Create new GPGME data buffer from packet buffer */
133
rc = gpgme_data_new_from_mem(&dh_crypto, packet, packet_size, 0);
184
134
if (rc != GPG_ERR_NO_ERROR){
185
135
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
186
136
gpgme_strsource(rc), gpgme_strerror(rc));
192
142
if (rc != GPG_ERR_NO_ERROR){
193
143
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
194
144
gpgme_strsource(rc), gpgme_strerror(rc));
195
gpgme_data_release(dh_crypto);
196
145
return -1;
197
146
}
198
147
201
150
if (rc != GPG_ERR_NO_ERROR){
202
151
fprintf(stderr, "bad gpgme_new: %s: %s\n",
203
152
gpgme_strsource(rc), gpgme_strerror(rc));
204
plaintext_length = -1;
205
goto decrypt_end;
153
return -1;
206
154
}
207
155
208
/* Decrypt data from the cryptotext data buffer to the plaintext
209
data buffer */
156
/* Decrypt data from the FILE pointer to the plaintext data
157
buffer */
210
158
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
211
159
if (rc != GPG_ERR_NO_ERROR){
212
160
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
213
161
gpgme_strsource(rc), gpgme_strerror(rc));
214
plaintext_length = -1;
215
goto decrypt_end;
162
return -1;
216
163
}
217
164
218
165
if(debug){
219
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
166
fprintf(stderr, "Decryption of OpenPGP packet succeeded\n");
220
167
}
221
168
222
169
if (debug){
223
170
gpgme_decrypt_result_t result;
224
171
result = gpgme_op_decrypt_result(ctx);
227
174
} else {
228
175
fprintf(stderr, "Unsupported algorithm: %s\n",
229
176
result->unsupported_algorithm);
230
fprintf(stderr, "Wrong key usage: %u\n",
177
fprintf(stderr, "Wrong key usage: %d\n",
231
178
result->wrong_key_usage);
232
179
if(result->file_name != NULL){
233
180
fprintf(stderr, "File name: %s\n", result->file_name);
248
195
}
249
196
}
250
197
198
/* Delete the GPGME FILE pointer cryptotext data buffer */
199
gpgme_data_release(dh_crypto);
200
251
201
/* Seek back to the beginning of the GPGME plaintext data buffer */
252
202
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
253
203
perror("pgpme_data_seek");
254
plaintext_length = -1;
255
goto decrypt_end;
256
204
}
257
205
258
*plaintext = NULL;
206
*new_packet = 0;
259
207
while(true){
260
plaintext_capacity = adjustbuffer(plaintext,
261
(size_t)plaintext_length,
262
plaintext_capacity);
263
if (plaintext_capacity == 0){
264
perror("adjustbuffer");
265
plaintext_length = -1;
266
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;
267
217
}
268
218
269
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
219
ret = gpgme_data_read(dh_plain, *new_packet + new_packet_length,
270
220
BUFFER_SIZE);
271
221
/* Print the data, if any */
272
222
if (ret == 0){
273
/* EOF */
274
223
break;
275
224
}
276
225
if(ret < 0){
277
226
perror("gpgme_data_read");
278
plaintext_length = -1;
279
goto decrypt_end;
227
return -1;
280
228
}
281
plaintext_length += ret;
229
new_packet_length += ret;
282
230
}
283
231
284
if(debug){
285
fprintf(stderr, "Decrypted password is: ");
286
for(ssize_t i = 0; i < plaintext_length; i++){
287
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
288
}
289
fprintf(stderr, "\n");
290
}
291
292
decrypt_end:
293
294
/* Delete the GPGME cryptotext data buffer */
295
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
/* } */
296
239
297
240
/* Delete the GPGME plaintext data buffer */
298
241
gpgme_data_release(dh_plain);
299
return plaintext_length;
242
return new_packet_length;
300
243
}
301
244
302
245
static const char * safer_gnutls_strerror (int value) {
306
249
return ret;
307
250
}
308
251
309
/* GnuTLS log function callback */
310
static void debuggnutls(__attribute__((unused)) int level,
311
const char* string){
312
fprintf(stderr, "GnuTLS: %s", string);
252
void debuggnutls(__attribute__((unused)) int level,
253
const char* string){
254
fprintf(stderr, "%s", string);
313
255
}
314
256
315
static int init_gnutls_global(mandos_context *mc,
316
const char *pubkeyfile,
317
const char *seckeyfile){
257
int initgnutls(encrypted_session *es){
258
const char *err;
318
259
int ret;
319
260
320
261
if(debug){
321
262
fprintf(stderr, "Initializing GnuTLS\n");
322
263
}
323
324
ret = gnutls_global_init();
325
if (ret != GNUTLS_E_SUCCESS) {
326
fprintf (stderr, "GnuTLS global_init: %s\n",
327
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));
328
268
return -1;
329
269
}
330
270
331
271
if (debug){
332
/* "Use a log level over 10 to enable all debugging options."
333
* - GnuTLS manual
334
*/
335
272
gnutls_global_set_log_level(11);
336
273
gnutls_global_set_log_function(debuggnutls);
337
274
}
338
275
339
/* OpenPGP credentials */
340
gnutls_certificate_allocate_credentials(&mc->cred);
341
if (ret != GNUTLS_E_SUCCESS){
342
fprintf (stderr, "GnuTLS memory error: %s\n",
276
/* openpgp credentials */
277
if ((ret = gnutls_certificate_allocate_credentials (&es->cred))
278
!= GNUTLS_E_SUCCESS) {
279
fprintf (stderr, "memory error: %s\n",
343
280
safer_gnutls_strerror(ret));
344
gnutls_global_deinit ();
345
281
return -1;
346
282
}
347
283
348
284
if(debug){
349
285
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
350
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
351
seckeyfile);
286
" and keyfile %s as GnuTLS credentials\n", certfile,
287
certkey);
352
288
}
353
289
354
290
ret = gnutls_certificate_set_openpgp_key_file
355
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
291
(es->cred, certfile, certkey, GNUTLS_OPENPGP_FMT_BASE64);
356
292
if (ret != GNUTLS_E_SUCCESS) {
357
fprintf(stderr,
358
"Error[%d] while reading the OpenPGP key pair ('%s',"
359
" '%s')\n", ret, pubkeyfile, seckeyfile);
360
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",
361
298
safer_gnutls_strerror(ret));
362
goto globalfail;
363
}
364
365
/* GnuTLS server initialization */
366
ret = gnutls_dh_params_init(&mc->dh_params);
367
if (ret != GNUTLS_E_SUCCESS) {
368
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
369
" %s\n", safer_gnutls_strerror(ret));
370
goto globalfail;
371
}
372
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
373
if (ret != GNUTLS_E_SUCCESS) {
374
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
375
safer_gnutls_strerror(ret));
376
goto globalfail;
377
}
378
379
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
380
381
return 0;
382
383
globalfail:
384
385
gnutls_certificate_free_credentials(mc->cred);
386
gnutls_global_deinit();
387
return -1;
388
389
}
390
391
static int init_gnutls_session(mandos_context *mc,
392
gnutls_session_t *session){
393
int ret;
394
/* GnuTLS session creation */
395
ret = gnutls_init(session, GNUTLS_SERVER);
396
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){
397
322
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
398
323
safer_gnutls_strerror(ret));
399
324
}
400
325
401
{
402
const char *err;
403
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
404
if (ret != GNUTLS_E_SUCCESS) {
405
fprintf(stderr, "Syntax error at: %s\n", err);
406
fprintf(stderr, "GnuTLS error: %s\n",
407
safer_gnutls_strerror(ret));
408
gnutls_deinit (*session);
409
return -1;
410
}
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;
411
332
}
412
333
413
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
414
mc->cred);
415
if (ret != GNUTLS_E_SUCCESS) {
416
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",
417
338
safer_gnutls_strerror(ret));
418
gnutls_deinit (*session);
419
339
return -1;
420
340
}
421
341
422
342
/* ignore client certificate if any. */
423
gnutls_certificate_server_set_request (*session,
343
gnutls_certificate_server_set_request (es->session,
424
344
GNUTLS_CERT_IGNORE);
425
345
426
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
346
gnutls_dh_set_prime_bits (es->session, DH_BITS);
427
347
428
348
return 0;
429
349
}
430
350
431
/* Avahi log function callback */
432
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
433
__attribute__((unused)) const char *txt){}
351
void empty_log(__attribute__((unused)) AvahiLogLevel level,
352
__attribute__((unused)) const char *txt){}
434
353
435
/* Called when a Mandos server is found */
436
static int start_mandos_communication(const char *ip, uint16_t port,
437
AvahiIfIndex if_index,
438
mandos_context *mc){
354
int start_mandos_communication(const char *ip, uint16_t port,
355
unsigned int if_index){
439
356
int ret, tcp_sd;
440
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
357
struct sockaddr_in6 to;
358
encrypted_session es;
441
359
char *buffer = NULL;
442
360
char *decrypted_buffer;
443
361
size_t buffer_length = 0;
444
362
size_t buffer_capacity = 0;
445
363
ssize_t decrypted_buffer_size;
446
size_t written;
364
size_t written = 0;
447
365
int retval = 0;
448
366
char interface[IF_NAMESIZE];
449
gnutls_session_t session;
450
451
ret = init_gnutls_session (mc, &session);
452
if (ret != 0){
453
return -1;
454
}
455
367
456
368
if(debug){
457
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
458
"\n", ip, port);
369
fprintf(stderr, "Setting up a tcp connection to %s\n", ip);
459
370
}
460
371
461
372
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
465
376
}
466
377
467
378
if(debug){
468
if(if_indextoname((unsigned int)if_index, interface) == NULL){
469
perror("if_indextoname");
379
if(if_indextoname(if_index, interface) == NULL){
380
if(debug){
381
perror("if_indextoname");
382
}
470
383
return -1;
471
384
}
385
472
386
fprintf(stderr, "Binding to interface %s\n", interface);
473
387
}
474
388
475
389
memset(&to,0,sizeof(to)); /* Spurious warning */
476
to.in6.sin6_family = AF_INET6;
477
/* It would be nice to have a way to detect if we were passed an
478
IPv4 address here. Now we assume an IPv6 address. */
479
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
390
to.sin6_family = AF_INET6;
391
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
480
392
if (ret < 0 ){
481
393
perror("inet_pton");
482
394
return -1;
483
}
395
}
484
396
if(ret == 0){
485
397
fprintf(stderr, "Bad address: %s\n", ip);
486
398
return -1;
487
399
}
488
to.in6.sin6_port = htons(port); /* Spurious warning */
400
to.sin6_port = htons(port); /* Spurious warning */
489
401
490
to.in6.sin6_scope_id = (uint32_t)if_index;
402
to.sin6_scope_id = (uint32_t)if_index;
491
403
492
404
if(debug){
493
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
494
port);
495
char addrstr[INET6_ADDRSTRLEN] = "";
496
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
497
sizeof(addrstr)) == NULL){
498
perror("inet_ntop");
499
} else {
500
if(strcmp(addrstr, ip) != 0){
501
fprintf(stderr, "Canonical address form: %s\n", addrstr);
502
}
503
}
405
fprintf(stderr, "Connection to: %s\n", ip);
504
406
}
505
407
506
ret = connect(tcp_sd, &to.in, sizeof(to));
408
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
507
409
if (ret < 0){
508
410
perror("connect");
509
411
return -1;
510
412
}
511
512
const char *out = mandos_protocol_version;
513
written = 0;
514
while (true){
515
size_t out_size = strlen(out);
516
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
517
out_size - written));
518
if (ret == -1){
519
perror("write");
520
retval = -1;
521
goto mandos_end;
522
}
523
written += (size_t)ret;
524
if(written < out_size){
525
continue;
526
} else {
527
if (out == mandos_protocol_version){
528
written = 0;
529
out = "\r\n";
530
} else {
531
break;
532
}
533
}
413
414
ret = initgnutls (&es);
415
if (ret != 0){
416
retval = -1;
417
return -1;
534
418
}
535
419
420
gnutls_transport_set_ptr (es.session,
421
(gnutls_transport_ptr_t) tcp_sd);
422
536
423
if(debug){
537
424
fprintf(stderr, "Establishing TLS session with %s\n", ip);
538
425
}
539
426
540
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
541
542
do{
543
ret = gnutls_handshake (session);
544
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
427
ret = gnutls_handshake (es.session);
545
428
546
429
if (ret != GNUTLS_E_SUCCESS){
547
430
if(debug){
548
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
431
fprintf(stderr, "\n*** Handshake failed ***\n");
549
432
gnutls_perror (ret);
550
433
}
551
434
retval = -1;
552
goto mandos_end;
435
goto exit;
553
436
}
554
437
555
/* Read OpenPGP packet that contains the wanted password */
438
//Retrieve OpenPGP packet that contains the wanted password
556
439
557
440
if(debug){
558
441
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
560
443
}
561
444
562
445
while(true){
563
buffer_capacity = adjustbuffer(&buffer, buffer_length,
564
buffer_capacity);
565
if (buffer_capacity == 0){
566
perror("adjustbuffer");
567
retval = -1;
568
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;
569
453
}
570
454
571
ret = gnutls_record_recv(session, buffer+buffer_length,
572
BUFFER_SIZE);
455
ret = gnutls_record_recv
456
(es.session, buffer+buffer_length, BUFFER_SIZE);
573
457
if (ret == 0){
574
458
break;
575
459
}
579
463
case GNUTLS_E_AGAIN:
580
464
break;
581
465
case GNUTLS_E_REHANDSHAKE:
582
do{
583
ret = gnutls_handshake (session);
584
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
466
ret = gnutls_handshake (es.session);
585
467
if (ret < 0){
586
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
468
fprintf(stderr, "\n*** Handshake failed ***\n");
587
469
gnutls_perror (ret);
588
470
retval = -1;
589
goto mandos_end;
471
goto exit;
590
472
}
591
473
break;
592
474
default:
593
475
fprintf(stderr, "Unknown error while reading data from"
594
" encrypted session with Mandos server\n");
476
" encrypted session with mandos server\n");
595
477
retval = -1;
596
gnutls_bye (session, GNUTLS_SHUT_RDWR);
597
goto mandos_end;
478
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
479
goto exit;
598
480
}
599
481
} else {
600
482
buffer_length += (size_t) ret;
601
483
}
602
484
}
603
485
604
if(debug){
605
fprintf(stderr, "Closing TLS session\n");
606
}
607
608
gnutls_bye (session, GNUTLS_SHUT_RDWR);
609
610
486
if (buffer_length > 0){
611
487
decrypted_buffer_size = pgp_packet_decrypt(buffer,
612
488
buffer_length,
613
489
&decrypted_buffer,
614
keydir);
490
certdir);
615
491
if (decrypted_buffer_size >= 0){
616
written = 0;
617
while(written < (size_t) decrypted_buffer_size){
492
while(written < (size_t)decrypted_buffer_size){
618
493
ret = (int)fwrite (decrypted_buffer + written, 1,
619
494
(size_t)decrypted_buffer_size - written,
620
495
stdout);
633
508
retval = -1;
634
509
}
635
510
}
636
637
/* Shutdown procedure */
638
639
mandos_end:
511
512
//shutdown procedure
513
514
if(debug){
515
fprintf(stderr, "Closing TLS session\n");
516
}
517
640
518
free(buffer);
519
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
520
exit:
641
521
close(tcp_sd);
642
gnutls_deinit (session);
522
gnutls_deinit (es.session);
523
gnutls_certificate_free_credentials (es.cred);
524
gnutls_global_deinit ();
643
525
return retval;
644
526
}
645
527
646
static void resolve_callback(AvahiSServiceResolver *r,
647
AvahiIfIndex interface,
648
AVAHI_GCC_UNUSED AvahiProtocol protocol,
649
AvahiResolverEvent event,
650
const char *name,
651
const char *type,
652
const char *domain,
653
const char *host_name,
654
const AvahiAddress *address,
655
uint16_t port,
656
AVAHI_GCC_UNUSED AvahiStringList *txt,
657
AVAHI_GCC_UNUSED AvahiLookupResultFlags
658
flags,
659
void* userdata) {
660
mandos_context *mc = userdata;
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
661
546
assert(r); /* Spurious warning */
662
547
663
548
/* Called whenever a service has been resolved successfully or
666
551
switch (event) {
667
552
default:
668
553
case AVAHI_RESOLVER_FAILURE:
669
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
670
" of type '%s' in domain '%s': %s\n", name, type, domain,
671
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)));
672
557
break;
673
558
674
559
case AVAHI_RESOLVER_FOUND:
676
561
char ip[AVAHI_ADDRESS_STR_MAX];
677
562
avahi_address_snprint(ip, sizeof(ip), address);
678
563
if(debug){
679
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
680
PRIu16 ") on port %d\n", name, host_name, ip,
681
interface, port);
564
fprintf(stderr, "Mandos server \"%s\" found on %s (%s) on"
565
" port %d\n", name, host_name, ip, port);
682
566
}
683
int ret = start_mandos_communication(ip, port, interface, mc);
567
int ret = start_mandos_communication(ip, port,
568
(unsigned int) interface);
684
569
if (ret == 0){
685
avahi_simple_poll_quit(mc->simple_poll);
570
exit(EXIT_SUCCESS);
686
571
}
687
572
}
688
573
}
689
574
avahi_s_service_resolver_free(r);
690
575
}
691
576
692
static void browse_callback( AvahiSServiceBrowser *b,
693
AvahiIfIndex interface,
694
AvahiProtocol protocol,
695
AvahiBrowserEvent event,
696
const char *name,
697
const char *type,
698
const char *domain,
699
AVAHI_GCC_UNUSED AvahiLookupResultFlags
700
flags,
701
void* userdata) {
702
mandos_context *mc = userdata;
703
assert(b); /* Spurious warning */
704
705
/* Called whenever a new services becomes available on the LAN or
706
is removed from the LAN */
707
708
switch (event) {
709
default:
710
case AVAHI_BROWSER_FAILURE:
711
712
fprintf(stderr, "(Avahi browser) %s\n",
713
avahi_strerror(avahi_server_errno(mc->server)));
714
avahi_simple_poll_quit(mc->simple_poll);
715
return;
716
717
case AVAHI_BROWSER_NEW:
718
/* We ignore the returned Avahi resolver object. In the callback
719
function we free it. If the Avahi server is terminated before
720
the callback function is called the Avahi server will free the
721
resolver for us. */
722
723
if (!(avahi_s_service_resolver_new(mc->server, interface,
724
protocol, name, type, domain,
725
AVAHI_PROTO_INET6, 0,
726
resolve_callback, mc)))
727
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
728
name, avahi_strerror(avahi_server_errno(mc->server)));
729
break;
730
731
case AVAHI_BROWSER_REMOVE:
732
break;
733
734
case AVAHI_BROWSER_ALL_FOR_NOW:
735
case AVAHI_BROWSER_CACHE_EXHAUSTED:
736
if(debug){
737
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;
738
623
}
739
break;
740
}
741
624
}
742
625
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);
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);
749
630
if (tmp == NULL){
631
perror("malloc");
750
632
return NULL;
751
633
}
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';
634
strcpy(tmp, first);
635
if (first[0] != '\0' and first[strlen(first) - 1] != '/'){
636
strcat(tmp, "/");
637
}
638
strcat(tmp, second);
760
639
return tmp;
761
640
}
762
641
763
642
764
int main(int argc, char *argv[]){
643
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
644
AvahiServerConfig config;
765
645
AvahiSServiceBrowser *sb = NULL;
766
646
int error;
767
647
int ret;
768
int exitcode = EXIT_SUCCESS;
648
int returncode = EXIT_SUCCESS;
769
649
const char *interface = "eth0";
770
650
struct ifreq network;
771
651
int sd;
772
uid_t uid;
773
gid_t gid;
774
char *connect_to = NULL;
775
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
776
const char *pubkeyfile = "pubkey.txt";
777
const char *seckeyfile = "seckey.txt";
778
mandos_context mc = { .simple_poll = NULL, .server = NULL,
779
.dh_bits = 1024, .priority = "SECURE256"};
780
bool gnutls_initalized = false;
781
782
{
783
struct argp_option options[] = {
784
{ .name = "debug", .key = 128,
785
.doc = "Debug mode", .group = 3 },
786
{ .name = "connect", .key = 'c',
787
.arg = "IP",
788
.doc = "Connect directly to a sepcified mandos server",
789
.group = 1 },
790
{ .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",
797
.group = 1 },
798
{ .name = "seckey", .key = 's',
799
.arg = "SECKEY",
800
.doc = "Secret openpgp key for gnutls authentication",
801
.group = 1 },
802
{ .name = "pubkey", .key = 'p',
803
.arg = "PUBKEY",
804
.doc = "Public openpgp key for gnutls authentication",
805
.group = 2 },
806
{ .name = "dh-bits", .key = 129,
807
.arg = "BITS",
808
.doc = "dh-bits to use in gnutls communication",
809
.group = 2 },
810
{ .name = "priority", .key = 130,
811
.arg = "PRIORITY",
812
.doc = "GNUTLS priority", .group = 1 },
813
{ .name = NULL }
814
};
815
816
817
error_t parse_opt (int key, char *arg,
818
struct argp_state *state) {
819
/* Get the INPUT argument from `argp_parse', which we know is
820
a pointer to our plugin list pointer. */
821
switch (key) {
822
case 128:
823
debug = true;
824
break;
825
case 'c':
826
connect_to = arg;
827
break;
828
case 'i':
829
interface = arg;
830
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:
841
errno = 0;
842
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
843
if (errno){
844
perror("strtol");
845
exit(EXIT_FAILURE);
846
}
847
break;
848
case 130:
849
mc.priority = arg;
850
break;
851
case ARGP_KEY_ARG:
852
argp_usage (state);
853
case ARGP_KEY_END:
854
break;
855
default:
856
return ARGP_ERR_UNKNOWN;
857
}
858
return 0;
859
}
860
861
struct argp argp = { .options = options, .parser = parse_opt,
862
.args_doc = "",
863
.doc = "Mandos client -- Get and decrypt"
864
" passwords from mandos server" };
865
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
866
if (ret == ARGP_ERR_UNKNOWN){
867
fprintf(stderr, "Unknown error while parsing arguments\n");
868
exitcode = EXIT_FAILURE;
869
goto end;
870
}
871
}
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
896
/* If the interface is down, bring it up */
897
{
898
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
899
if(sd < 0) {
900
perror("socket");
901
exitcode = EXIT_FAILURE;
902
goto end;
903
}
904
strcpy(network.ifr_name, interface); /* Spurious warning */
905
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);
906
719
if(ret == -1){
907
perror("ioctl SIOCGIFFLAGS");
908
exitcode = EXIT_FAILURE;
909
goto end;
910
}
911
if((network.ifr_flags & IFF_UP) == 0){
912
network.ifr_flags |= IFF_UP;
913
ret = ioctl(sd, SIOCSIFFLAGS, &network);
914
if(ret == -1){
915
perror("ioctl SIOCSIFFLAGS");
916
exitcode = EXIT_FAILURE;
917
goto end;
918
}
919
}
920
close(sd);
921
}
922
923
uid = getuid();
924
gid = getgid();
925
926
ret = setuid(uid);
927
if (ret == -1){
928
perror("setuid");
929
}
930
931
setgid(gid);
932
if (ret == -1){
933
perror("setgid");
934
}
935
936
if_index = (AvahiIfIndex) if_nametoindex(interface);
937
if(if_index == 0){
938
fprintf(stderr, "No such interface: \"%s\"\n", interface);
939
exit(EXIT_FAILURE);
940
}
941
942
if(connect_to != NULL){
943
/* Connect directly, do not use Zeroconf */
944
/* (Mainly meant for debugging) */
945
char *address = strrchr(connect_to, ':');
946
if(address == NULL){
947
fprintf(stderr, "No colon in address\n");
948
exitcode = EXIT_FAILURE;
949
goto end;
950
}
951
errno = 0;
952
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
953
if(errno){
954
perror("Bad port number");
955
exitcode = EXIT_FAILURE;
956
goto end;
957
}
958
*address = '\0';
959
address = connect_to;
960
ret = start_mandos_communication(address, port, if_index, &mc);
961
if(ret < 0){
962
exitcode = EXIT_FAILURE;
963
} else {
964
exitcode = EXIT_SUCCESS;
965
}
966
goto end;
967
}
720
perror("ioctl SIOCSIFFLAGS");
721
returncode = EXIT_FAILURE;
722
goto exit;
723
}
724
}
725
close(sd);
968
726
969
727
if (not debug){
970
728
avahi_set_log_function(empty_log);
971
729
}
972
730
973
/* Initialize the pseudo-RNG for Avahi */
731
/* Initialize the psuedo-RNG */
974
732
srand((unsigned int) time(NULL));
975
976
/* Allocate main Avahi loop object */
977
mc.simple_poll = avahi_simple_poll_new();
978
if (mc.simple_poll == NULL) {
979
fprintf(stderr, "Avahi: Failed to create simple poll"
980
" object.\n");
981
exitcode = EXIT_FAILURE;
982
goto end;
983
}
984
985
{
986
AvahiServerConfig config;
987
/* Do not publish any local Zeroconf records */
988
avahi_server_config_init(&config);
989
config.publish_hinfo = 0;
990
config.publish_addresses = 0;
991
config.publish_workstation = 0;
992
config.publish_domain = 0;
993
994
/* Allocate a new server */
995
mc.server = avahi_server_new(avahi_simple_poll_get
996
(mc.simple_poll), &config, NULL,
997
NULL, &error);
998
999
/* Free the Avahi configuration data */
1000
avahi_server_config_free(&config);
1001
}
1002
1003
/* Check if creating the Avahi server object succeeded */
1004
if (mc.server == NULL) {
1005
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",
1006
758
avahi_strerror(error));
1007
exitcode = EXIT_FAILURE;
1008
goto end;
759
returncode = EXIT_FAILURE;
760
goto exit;
1009
761
}
1010
762
1011
/* Create the Avahi service browser */
1012
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),
1013
767
AVAHI_PROTO_INET6,
1014
768
"_mandos._tcp", NULL, 0,
1015
browse_callback, &mc);
1016
if (sb == NULL) {
769
browse_callback, server);
770
if (!sb) {
1017
771
fprintf(stderr, "Failed to create service browser: %s\n",
1018
avahi_strerror(avahi_server_errno(mc.server)));
1019
exitcode = EXIT_FAILURE;
1020
goto end;
772
avahi_strerror(avahi_server_errno(server)));
773
returncode = EXIT_FAILURE;
774
goto exit;
1021
775
}
1022
776
1023
777
/* Run the main loop */
1024
778
1025
779
if (debug){
1026
fprintf(stderr, "Starting Avahi loop search\n");
780
fprintf(stderr, "Starting avahi loop search\n");
1027
781
}
1028
782
1029
avahi_simple_poll_loop(mc.simple_poll);
783
avahi_simple_poll_loop(simple_poll);
1030
784
1031
end:
785
exit:
1032
786
1033
787
if (debug){
1034
788
fprintf(stderr, "%s exiting\n", argv[0]);
1035
789
}
1036
790
1037
791
/* Cleanup things */
1038
if (sb != NULL)
792
if (sb)
1039
793
avahi_s_service_browser_free(sb);
1040
794
1041
if (mc.server != NULL)
1042
avahi_server_free(mc.server);
1043
1044
if (mc.simple_poll != NULL)
1045
avahi_simple_poll_free(mc.simple_poll);
1046
free(pubkeyfile);
1047
free(seckeyfile);
1048
1049
if (gnutls_initalized){
1050
gnutls_certificate_free_credentials(mc.cred);
1051
gnutls_global_deinit ();
1052
}
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);
1053
802
1054
return exitcode;
803
return returncode;
1055
804
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0