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- Committer: Teddy Hogeborn
- Date: 2008-08-08 23:28:55 UTC
- mfrom: (24.1.25 mandos)
- Revision ID: teddy@fukt.bsnet.se-20080808232855-2hcaxr9jwwmvetx4
* Makefile: Do DocBook manual conversion in a better way.
* mandos (main): Write a PID file.
* mandos (main): Write a PID file.
- 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
1
/***
2
This file is part of avahi.
3
4
avahi is free software; you can redistribute it and/or modify it
5
under the terms of the GNU Lesser General Public License as
6
published by the Free Software Foundation; either version 2.1 of the
7
License, or (at your option) any later version.
8
9
avahi is distributed in the hope that it will be useful, but WITHOUT
10
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
11
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
12
Public License for more details.
13
14
You should have received a copy of the GNU Lesser General Public
15
License along with avahi; if not, write to the Free Software
16
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
17
USA.
18
***/
1
/* -*- coding: utf-8 -*- */
2
/*
3
* Mandos client - get and decrypt data from a Mandos server
4
*
5
* This program is partly derived from an example program for an Avahi
6
* service browser, downloaded from
7
* <http://avahi.org/browser/examples/core-browse-services.c>. This
8
* includes the following functions: "resolve_callback",
9
* "browse_callback", and parts of "main".
10
*
11
* Everything else is
12
* Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
13
*
14
* This program is free software: you can redistribute it and/or
15
* modify it under the terms of the GNU General Public License as
16
* published by the Free Software Foundation, either version 3 of the
17
* License, or (at your option) any later version.
18
*
19
* This program is distributed in the hope that it will be useful, but
20
* WITHOUT ANY WARRANTY; without even the implied warranty of
21
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22
* General Public License for more details.
23
*
24
* You should have received a copy of the GNU General Public License
25
* along with this program. If not, see
26
* <http://www.gnu.org/licenses/>.
27
*
28
* Contact the authors at <mandos@fukt.bsnet.se>.
29
*/
19
30
31
/* Needed by GPGME, specifically gpgme_data_seek() */
20
32
#define _LARGEFILE_SOURCE
21
33
#define _FILE_OFFSET_BITS 64
22
34
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
36
23
37
#include <stdio.h>
24
38
#include <assert.h>
25
39
#include <stdlib.h>
26
40
#include <time.h>
27
41
#include <net/if.h> /* if_nametoindex */
42
#include <sys/ioctl.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
43
SIOCSIFFLAGS */
44
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
45
SIOCSIFFLAGS */
28
46
29
47
#include <avahi-core/core.h>
30
48
#include <avahi-core/lookup.h>
33
51
#include <avahi-common/malloc.h>
34
52
#include <avahi-common/error.h>
35
53
36
//mandos client part
37
#include <sys/types.h> /* socket(), setsockopt(), inet_pton() */
38
#include <sys/socket.h> /* socket(), setsockopt(), struct sockaddr_in6, struct in6_addr, inet_pton() */
39
#include <gnutls/gnutls.h> /* ALL GNUTLS STUFF */
40
#include <gnutls/openpgp.h> /* gnutls with openpgp stuff */
54
/* Mandos client part */
55
#include <sys/types.h> /* socket(), inet_pton() */
56
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
57
struct in6_addr, inet_pton() */
58
#include <gnutls/gnutls.h> /* All GnuTLS stuff */
59
#include <gnutls/openpgp.h> /* GnuTLS with openpgp stuff */
41
60
42
61
#include <unistd.h> /* close() */
43
62
#include <netinet/in.h>
45
64
#include <string.h> /* memset */
46
65
#include <arpa/inet.h> /* inet_pton() */
47
66
#include <iso646.h> /* not */
48
49
// gpgme
67
#include <net/if.h> /* IF_NAMESIZE */
68
#include <argp.h> /* struct argp_option,
69
struct argp_state, struct argp,
70
argp_parse() */
71
/* GPGME */
50
72
#include <errno.h> /* perror() */
51
73
#include <gpgme.h>
52
74
53
54
#ifndef CERT_ROOT
55
#define CERT_ROOT "/conf/conf.d/cryptkeyreq/"
56
#endif
57
#define CERTFILE CERT_ROOT "openpgp-client.txt"
58
#define KEYFILE CERT_ROOT "openpgp-client-key.txt"
59
75
#define BUFFER_SIZE 256
60
#define DH_BITS 1024
61
76
62
77
bool debug = false;
78
static const char *keydir = "/conf/conf.d/mandos";
79
static const char mandos_protocol_version[] = "1";
80
const char *argp_program_version = "mandosclient 0.9";
81
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
63
82
83
/* Used for passing in values through the Avahi callback functions */
64
84
typedef struct {
65
gnutls_session_t session;
85
AvahiSimplePoll *simple_poll;
86
AvahiServer *server;
66
87
gnutls_certificate_credentials_t cred;
88
unsigned int dh_bits;
67
89
gnutls_dh_params_t dh_params;
68
} encrypted_session;
69
70
71
ssize_t gpg_packet_decrypt (char *packet, size_t packet_size, char **new_packet, char *homedir){
90
const char *priority;
91
} mandos_context;
92
93
/*
94
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
95
* "buffer_capacity" is how much is currently allocated,
96
* "buffer_length" is how much is already used.
97
*/
98
size_t adjustbuffer(char **buffer, size_t buffer_length,
99
size_t buffer_capacity){
100
if (buffer_length + BUFFER_SIZE > buffer_capacity){
101
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
102
if (buffer == NULL){
103
return 0;
104
}
105
buffer_capacity += BUFFER_SIZE;
106
}
107
return buffer_capacity;
108
}
109
110
/*
111
* Decrypt OpenPGP data using keyrings in HOMEDIR.
112
* Returns -1 on error
113
*/
114
static ssize_t pgp_packet_decrypt (const char *cryptotext,
115
size_t crypto_size,
116
char **plaintext,
117
const char *homedir){
72
118
gpgme_data_t dh_crypto, dh_plain;
73
119
gpgme_ctx_t ctx;
74
120
gpgme_error_t rc;
75
121
ssize_t ret;
76
size_t new_packet_capacity = 0;
77
size_t new_packet_length = 0;
122
size_t plaintext_capacity = 0;
123
ssize_t plaintext_length = 0;
78
124
gpgme_engine_info_t engine_info;
79
125
80
126
if (debug){
81
fprintf(stderr, "Attempting to decrypt password from gpg packet\n");
127
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
82
128
}
83
129
84
130
/* Init GPGME */
85
131
gpgme_check_version(NULL);
86
gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
132
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
133
if (rc != GPG_ERR_NO_ERROR){
134
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
135
gpgme_strsource(rc), gpgme_strerror(rc));
136
return -1;
137
}
87
138
88
/* Set GPGME home directory */
139
/* Set GPGME home directory for the OpenPGP engine only */
89
140
rc = gpgme_get_engine_info (&engine_info);
90
141
if (rc != GPG_ERR_NO_ERROR){
91
142
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
101
152
engine_info = engine_info->next;
102
153
}
103
154
if(engine_info == NULL){
104
fprintf(stderr, "Could not set home dir to %s\n", homedir);
155
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
105
156
return -1;
106
157
}
107
158
108
/* Create new GPGME data buffer from packet buffer */
109
rc = gpgme_data_new_from_mem(&dh_crypto, packet, packet_size, 0);
159
/* Create new GPGME data buffer from memory cryptotext */
160
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
161
0);
110
162
if (rc != GPG_ERR_NO_ERROR){
111
163
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
112
164
gpgme_strsource(rc), gpgme_strerror(rc));
118
170
if (rc != GPG_ERR_NO_ERROR){
119
171
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
120
172
gpgme_strsource(rc), gpgme_strerror(rc));
173
gpgme_data_release(dh_crypto);
121
174
return -1;
122
175
}
123
176
126
179
if (rc != GPG_ERR_NO_ERROR){
127
180
fprintf(stderr, "bad gpgme_new: %s: %s\n",
128
181
gpgme_strsource(rc), gpgme_strerror(rc));
129
return -1;
182
plaintext_length = -1;
183
goto decrypt_end;
130
184
}
131
185
132
/* Decrypt data from the FILE pointer to the plaintext data buffer */
186
/* Decrypt data from the cryptotext data buffer to the plaintext
187
data buffer */
133
188
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
134
189
if (rc != GPG_ERR_NO_ERROR){
135
190
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
136
191
gpgme_strsource(rc), gpgme_strerror(rc));
137
return -1;
192
plaintext_length = -1;
193
goto decrypt_end;
138
194
}
139
195
140
196
if(debug){
141
fprintf(stderr, "decryption of gpg packet succeeded\n");
197
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
142
198
}
143
199
144
200
if (debug){
145
201
gpgme_decrypt_result_t result;
146
202
result = gpgme_op_decrypt_result(ctx);
147
203
if (result == NULL){
148
204
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
149
205
} else {
150
fprintf(stderr, "Unsupported algorithm: %s\n", result->unsupported_algorithm);
151
fprintf(stderr, "Wrong key usage: %d\n", result->wrong_key_usage);
206
fprintf(stderr, "Unsupported algorithm: %s\n",
207
result->unsupported_algorithm);
208
fprintf(stderr, "Wrong key usage: %d\n",
209
result->wrong_key_usage);
152
210
if(result->file_name != NULL){
153
211
fprintf(stderr, "File name: %s\n", result->file_name);
154
212
}
160
218
gpgme_pubkey_algo_name(recipient->pubkey_algo));
161
219
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
162
220
fprintf(stderr, "Secret key available: %s\n",
163
recipient->status == GPG_ERR_NO_SECKEY ? "No" : "Yes");
221
recipient->status == GPG_ERR_NO_SECKEY
222
? "No" : "Yes");
164
223
recipient = recipient->next;
165
224
}
166
225
}
167
226
}
168
227
}
169
228
170
/* Delete the GPGME FILE pointer cryptotext data buffer */
171
gpgme_data_release(dh_crypto);
172
173
229
/* Seek back to the beginning of the GPGME plaintext data buffer */
174
gpgme_data_seek(dh_plain, 0, SEEK_SET);
175
176
*new_packet = 0;
230
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
231
perror("pgpme_data_seek");
232
plaintext_length = -1;
233
goto decrypt_end;
234
}
235
236
*plaintext = NULL;
177
237
while(true){
178
if (new_packet_length + BUFFER_SIZE > new_packet_capacity){
179
*new_packet = realloc(*new_packet, new_packet_capacity + BUFFER_SIZE);
180
if (*new_packet == NULL){
181
perror("realloc");
182
return -1;
183
}
184
new_packet_capacity += BUFFER_SIZE;
238
plaintext_capacity = adjustbuffer(plaintext,
239
(size_t)plaintext_length,
240
plaintext_capacity);
241
if (plaintext_capacity == 0){
242
perror("adjustbuffer");
243
plaintext_length = -1;
244
goto decrypt_end;
185
245
}
186
246
187
ret = gpgme_data_read(dh_plain, *new_packet + new_packet_length, BUFFER_SIZE);
247
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
248
BUFFER_SIZE);
188
249
/* Print the data, if any */
189
250
if (ret == 0){
190
/* If password is empty, then a incorrect error will be printed */
251
/* EOF */
191
252
break;
192
253
}
193
254
if(ret < 0){
194
255
perror("gpgme_data_read");
195
return -1;
256
plaintext_length = -1;
257
goto decrypt_end;
196
258
}
197
new_packet_length += ret;
259
plaintext_length += ret;
198
260
}
199
261
200
262
if(debug){
201
fprintf(stderr, "decrypted password is: %s\n", *new_packet);
263
fprintf(stderr, "Decrypted password is: ");
264
for(ssize_t i = 0; i < plaintext_length; i++){
265
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
266
}
267
fprintf(stderr, "\n");
202
268
}
203
204
/* Delete the GPGME plaintext data buffer */
269
270
decrypt_end:
271
272
/* Delete the GPGME cryptotext data buffer */
273
gpgme_data_release(dh_crypto);
274
275
/* Delete the GPGME plaintext data buffer */
205
276
gpgme_data_release(dh_plain);
206
return new_packet_length;
277
return plaintext_length;
207
278
}
208
279
209
280
static const char * safer_gnutls_strerror (int value) {
213
284
return ret;
214
285
}
215
286
216
void debuggnutls(int level, const char* string){
217
fprintf(stderr, "%s", string);
287
/* GnuTLS log function callback */
288
static void debuggnutls(__attribute__((unused)) int level,
289
const char* string){
290
fprintf(stderr, "GnuTLS: %s", string);
218
291
}
219
292
220
int initgnutls(encrypted_session *es){
221
const char *err;
293
static int init_gnutls_global(mandos_context *mc,
294
const char *pubkeyfile,
295
const char *seckeyfile){
222
296
int ret;
223
297
224
298
if(debug){
225
fprintf(stderr, "Initializing gnutls\n");
299
fprintf(stderr, "Initializing GnuTLS\n");
226
300
}
227
301
228
229
302
if ((ret = gnutls_global_init ())
230
303
!= GNUTLS_E_SUCCESS) {
231
fprintf (stderr, "global_init: %s\n", safer_gnutls_strerror(ret));
304
fprintf (stderr, "GnuTLS global_init: %s\n",
305
safer_gnutls_strerror(ret));
232
306
return -1;
233
307
}
234
308
235
309
if (debug){
310
/* "Use a log level over 10 to enable all debugging options."
311
* - GnuTLS manual
312
*/
236
313
gnutls_global_set_log_level(11);
237
314
gnutls_global_set_log_function(debuggnutls);
238
315
}
239
316
240
241
/* openpgp credentials */
242
if ((ret = gnutls_certificate_allocate_credentials (&es->cred))
317
/* OpenPGP credentials */
318
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
243
319
!= GNUTLS_E_SUCCESS) {
244
fprintf (stderr, "memory error: %s\n", safer_gnutls_strerror(ret));
320
fprintf (stderr, "GnuTLS memory error: %s\n",
321
safer_gnutls_strerror(ret));
322
gnutls_global_deinit ();
245
323
return -1;
246
324
}
247
325
248
326
if(debug){
249
fprintf(stderr, "Attempting to use openpgp certificate %s"
250
" and keyfile %s as gnutls credentials\n", CERTFILE, KEYFILE);
327
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
328
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
329
seckeyfile);
251
330
}
252
331
253
332
ret = gnutls_certificate_set_openpgp_key_file
254
(es->cred, CERTFILE, KEYFILE, GNUTLS_OPENPGP_FMT_BASE64);
255
if (ret != GNUTLS_E_SUCCESS) {
256
fprintf
257
(stderr, "Error[%d] while reading the OpenPGP key pair ('%s', '%s')\n",
258
ret, CERTFILE, KEYFILE);
259
fprintf(stdout, "The Error is: %s\n",
260
safer_gnutls_strerror(ret));
261
return -1;
262
}
263
264
//Gnutls server initialization
265
if ((ret = gnutls_dh_params_init (&es->dh_params))
266
!= GNUTLS_E_SUCCESS) {
267
fprintf (stderr, "Error in dh parameter initialization: %s\n",
268
safer_gnutls_strerror(ret));
269
return -1;
270
}
271
272
if ((ret = gnutls_dh_params_generate2 (es->dh_params, DH_BITS))
273
!= GNUTLS_E_SUCCESS) {
274
fprintf (stderr, "Error in prime generation: %s\n",
275
safer_gnutls_strerror(ret));
276
return -1;
277
}
278
279
gnutls_certificate_set_dh_params (es->cred, es->dh_params);
280
281
// Gnutls session creation
282
if ((ret = gnutls_init (&es->session, GNUTLS_SERVER))
283
!= GNUTLS_E_SUCCESS){
284
fprintf(stderr, "Error in gnutls session initialization: %s\n",
285
safer_gnutls_strerror(ret));
286
}
287
288
if ((ret = gnutls_priority_set_direct (es->session, "NORMAL", &err))
289
!= GNUTLS_E_SUCCESS) {
290
fprintf(stderr, "Syntax error at: %s\n", err);
291
fprintf(stderr, "Gnutls error: %s\n",
292
safer_gnutls_strerror(ret));
293
return -1;
294
}
295
296
if ((ret = gnutls_credentials_set
297
(es->session, GNUTLS_CRD_CERTIFICATE, es->cred))
298
!= GNUTLS_E_SUCCESS) {
299
fprintf(stderr, "Error setting a credentials set: %s\n",
300
safer_gnutls_strerror(ret));
301
return -1;
302
}
303
333
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
334
if (ret != GNUTLS_E_SUCCESS) {
335
fprintf(stderr,
336
"Error[%d] while reading the OpenPGP key pair ('%s',"
337
" '%s')\n", ret, pubkeyfile, seckeyfile);
338
fprintf(stdout, "The GnuTLS error is: %s\n",
339
safer_gnutls_strerror(ret));
340
goto globalfail;
341
}
342
343
/* GnuTLS server initialization */
344
ret = gnutls_dh_params_init(&mc->dh_params);
345
if (ret != GNUTLS_E_SUCCESS) {
346
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
347
" %s\n", safer_gnutls_strerror(ret));
348
goto globalfail;
349
}
350
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
351
if (ret != GNUTLS_E_SUCCESS) {
352
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
353
safer_gnutls_strerror(ret));
354
goto globalfail;
355
}
356
357
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
358
359
return 0;
360
361
globalfail:
362
363
gnutls_certificate_free_credentials (mc->cred);
364
gnutls_global_deinit ();
365
return -1;
366
367
}
368
369
static int init_gnutls_session(mandos_context *mc,
370
gnutls_session_t *session){
371
int ret;
372
/* GnuTLS session creation */
373
ret = gnutls_init(session, GNUTLS_SERVER);
374
if (ret != GNUTLS_E_SUCCESS){
375
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
376
safer_gnutls_strerror(ret));
377
}
378
379
{
380
const char *err;
381
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
382
if (ret != GNUTLS_E_SUCCESS) {
383
fprintf(stderr, "Syntax error at: %s\n", err);
384
fprintf(stderr, "GnuTLS error: %s\n",
385
safer_gnutls_strerror(ret));
386
gnutls_deinit (*session);
387
return -1;
388
}
389
}
390
391
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
392
mc->cred);
393
if (ret != GNUTLS_E_SUCCESS) {
394
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
395
safer_gnutls_strerror(ret));
396
gnutls_deinit (*session);
397
return -1;
398
}
399
304
400
/* ignore client certificate if any. */
305
gnutls_certificate_server_set_request (es->session, GNUTLS_CERT_IGNORE);
401
gnutls_certificate_server_set_request (*session,
402
GNUTLS_CERT_IGNORE);
306
403
307
gnutls_dh_set_prime_bits (es->session, DH_BITS);
404
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
308
405
309
406
return 0;
310
407
}
311
408
312
void empty_log(AvahiLogLevel level, const char *txt){}
409
/* Avahi log function callback */
410
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
411
__attribute__((unused)) const char *txt){}
313
412
314
int start_mandos_communication(char *ip, uint16_t port){
413
/* Called when a Mandos server is found */
414
static int start_mandos_communication(const char *ip, uint16_t port,
415
AvahiIfIndex if_index,
416
mandos_context *mc){
315
417
int ret, tcp_sd;
316
struct sockaddr_in6 to;
317
encrypted_session es;
418
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
318
419
char *buffer = NULL;
319
420
char *decrypted_buffer;
320
421
size_t buffer_length = 0;
321
422
size_t buffer_capacity = 0;
322
423
ssize_t decrypted_buffer_size;
424
size_t written;
323
425
int retval = 0;
324
const char interface[] = "eth0";
325
426
char interface[IF_NAMESIZE];
427
gnutls_session_t session;
428
429
ret = init_gnutls_session (mc, &session);
430
if (ret != 0){
431
return -1;
432
}
433
326
434
if(debug){
327
fprintf(stderr, "Setting up a tcp connection to %s\n", ip);
435
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
436
ip, port);
328
437
}
329
438
330
439
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
334
443
}
335
444
336
445
if(debug){
446
if(if_indextoname((unsigned int)if_index, interface) == NULL){
447
perror("if_indextoname");
448
return -1;
449
}
337
450
fprintf(stderr, "Binding to interface %s\n", interface);
338
451
}
339
340
ret = setsockopt(tcp_sd, SOL_SOCKET, SO_BINDTODEVICE, interface, 5);
341
if(tcp_sd < 0) {
342
perror("setsockopt bindtodevice");
343
return -1;
344
}
345
452
346
memset(&to,0,sizeof(to));
347
to.sin6_family = AF_INET6;
348
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
453
memset(&to,0,sizeof(to)); /* Spurious warning */
454
to.in6.sin6_family = AF_INET6;
455
/* It would be nice to have a way to detect if we were passed an
456
IPv4 address here. Now we assume an IPv6 address. */
457
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
349
458
if (ret < 0 ){
350
459
perror("inet_pton");
351
460
return -1;
352
}
461
}
353
462
if(ret == 0){
354
463
fprintf(stderr, "Bad address: %s\n", ip);
355
464
return -1;
356
465
}
357
to.sin6_port = htons(port);
358
to.sin6_scope_id = if_nametoindex(interface);
359
466
to.in6.sin6_port = htons(port); /* Spurious warning */
467
468
to.in6.sin6_scope_id = (uint32_t)if_index;
469
360
470
if(debug){
361
fprintf(stderr, "Connection to: %s\n", ip);
471
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
472
char addrstr[INET6_ADDRSTRLEN] = "";
473
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
474
sizeof(addrstr)) == NULL){
475
perror("inet_ntop");
476
} else {
477
if(strcmp(addrstr, ip) != 0){
478
fprintf(stderr, "Canonical address form: %s\n", addrstr);
479
}
480
}
362
481
}
363
482
364
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
483
ret = connect(tcp_sd, &to.in, sizeof(to));
365
484
if (ret < 0){
366
485
perror("connect");
367
486
return -1;
368
487
}
369
370
ret = initgnutls (&es);
371
if (ret != 0){
372
retval = -1;
373
return -1;
374
}
375
376
377
gnutls_transport_set_ptr (es.session, (gnutls_transport_ptr_t) tcp_sd);
378
488
489
const char *out = mandos_protocol_version;
490
written = 0;
491
while (true){
492
size_t out_size = strlen(out);
493
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
494
out_size - written));
495
if (ret == -1){
496
perror("write");
497
retval = -1;
498
goto mandos_end;
499
}
500
written += (size_t)ret;
501
if(written < out_size){
502
continue;
503
} else {
504
if (out == mandos_protocol_version){
505
written = 0;
506
out = "\r\n";
507
} else {
508
break;
509
}
510
}
511
}
512
379
513
if(debug){
380
fprintf(stderr, "Establishing tls session with %s\n", ip);
514
fprintf(stderr, "Establishing TLS session with %s\n", ip);
381
515
}
382
383
384
ret = gnutls_handshake (es.session);
516
517
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
518
519
ret = gnutls_handshake (session);
385
520
386
521
if (ret != GNUTLS_E_SUCCESS){
387
fprintf(stderr, "\n*** Handshake failed ***\n");
388
gnutls_perror (ret);
522
if(debug){
523
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
524
gnutls_perror (ret);
525
}
389
526
retval = -1;
390
goto exit;
527
goto mandos_end;
391
528
}
392
393
//Retrieve gpg packet that contains the wanted password
394
529
530
/* Read OpenPGP packet that contains the wanted password */
531
395
532
if(debug){
396
fprintf(stderr, "Retrieving pgp encrypted password from %s\n", ip);
533
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
534
ip);
397
535
}
398
536
399
537
while(true){
400
if (buffer_length + BUFFER_SIZE > buffer_capacity){
401
buffer = realloc(buffer, buffer_capacity + BUFFER_SIZE);
402
if (buffer == NULL){
403
perror("realloc");
404
goto exit;
405
}
406
buffer_capacity += BUFFER_SIZE;
538
buffer_capacity = adjustbuffer(&buffer, buffer_length,
539
buffer_capacity);
540
if (buffer_capacity == 0){
541
perror("adjustbuffer");
542
retval = -1;
543
goto mandos_end;
407
544
}
408
545
409
ret = gnutls_record_recv
410
(es.session, buffer+buffer_length, BUFFER_SIZE);
546
ret = gnutls_record_recv(session, buffer+buffer_length,
547
BUFFER_SIZE);
411
548
if (ret == 0){
412
549
break;
413
550
}
417
554
case GNUTLS_E_AGAIN:
418
555
break;
419
556
case GNUTLS_E_REHANDSHAKE:
420
ret = gnutls_handshake (es.session);
557
ret = gnutls_handshake (session);
421
558
if (ret < 0){
422
fprintf(stderr, "\n*** Handshake failed ***\n");
559
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
423
560
gnutls_perror (ret);
424
561
retval = -1;
425
goto exit;
562
goto mandos_end;
426
563
}
427
564
break;
428
565
default:
429
fprintf(stderr, "Unknown error while reading data from encrypted session with mandos server\n");
566
fprintf(stderr, "Unknown error while reading data from"
567
" encrypted session with Mandos server\n");
430
568
retval = -1;
431
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
432
goto exit;
569
gnutls_bye (session, GNUTLS_SHUT_RDWR);
570
goto mandos_end;
433
571
}
434
572
} else {
435
buffer_length += ret;
573
buffer_length += (size_t) ret;
436
574
}
437
575
}
438
576
577
if(debug){
578
fprintf(stderr, "Closing TLS session\n");
579
}
580
581
gnutls_bye (session, GNUTLS_SHUT_RDWR);
582
439
583
if (buffer_length > 0){
440
if ((decrypted_buffer_size = gpg_packet_decrypt(buffer, buffer_length, &decrypted_buffer, CERT_ROOT)) >= 0){
441
fwrite (decrypted_buffer, 1, decrypted_buffer_size, stdout);
584
decrypted_buffer_size = pgp_packet_decrypt(buffer,
585
buffer_length,
586
&decrypted_buffer,
587
keydir);
588
if (decrypted_buffer_size >= 0){
589
written = 0;
590
while(written < (size_t) decrypted_buffer_size){
591
ret = (int)fwrite (decrypted_buffer + written, 1,
592
(size_t)decrypted_buffer_size - written,
593
stdout);
594
if(ret == 0 and ferror(stdout)){
595
if(debug){
596
fprintf(stderr, "Error writing encrypted data: %s\n",
597
strerror(errno));
598
}
599
retval = -1;
600
break;
601
}
602
written += (size_t)ret;
603
}
442
604
free(decrypted_buffer);
443
605
} else {
444
606
retval = -1;
445
607
}
446
608
}
447
448
//shutdown procedure
449
450
if(debug){
451
fprintf(stderr, "Closing tls session\n");
452
}
453
609
610
/* Shutdown procedure */
611
612
mandos_end:
454
613
free(buffer);
455
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
456
exit:
457
614
close(tcp_sd);
458
gnutls_deinit (es.session);
459
gnutls_certificate_free_credentials (es.cred);
460
gnutls_global_deinit ();
615
gnutls_deinit (session);
461
616
return retval;
462
617
}
463
618
464
static AvahiSimplePoll *simple_poll = NULL;
465
static AvahiServer *server = NULL;
466
467
static void resolve_callback(
468
AvahiSServiceResolver *r,
469
AVAHI_GCC_UNUSED AvahiIfIndex interface,
470
AVAHI_GCC_UNUSED AvahiProtocol protocol,
471
AvahiResolverEvent event,
472
const char *name,
473
const char *type,
474
const char *domain,
475
const char *host_name,
476
const AvahiAddress *address,
477
uint16_t port,
478
AvahiStringList *txt,
479
AvahiLookupResultFlags flags,
480
AVAHI_GCC_UNUSED void* userdata) {
481
482
assert(r);
483
484
/* Called whenever a service has been resolved successfully or timed out */
485
486
switch (event) {
487
case AVAHI_RESOLVER_FAILURE:
488
fprintf(stderr, "(Resolver) Failed to resolve service '%s' of type '%s' in domain '%s': %s\n", name, type, domain, avahi_strerror(avahi_server_errno(server)));
489
break;
490
491
case AVAHI_RESOLVER_FOUND: {
492
char ip[AVAHI_ADDRESS_STR_MAX];
493
avahi_address_snprint(ip, sizeof(ip), address);
494
if(debug){
495
fprintf(stderr, "Mandos server found at %s on port %d\n", ip, port);
496
}
497
int ret = start_mandos_communication(ip, port);
498
if (ret == 0){
499
exit(EXIT_SUCCESS);
500
} else {
501
exit(EXIT_FAILURE);
502
}
503
}
504
}
505
avahi_s_service_resolver_free(r);
506
}
507
508
static void browse_callback(
509
AvahiSServiceBrowser *b,
510
AvahiIfIndex interface,
511
AvahiProtocol protocol,
512
AvahiBrowserEvent event,
513
const char *name,
514
const char *type,
515
const char *domain,
516
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
517
void* userdata) {
518
519
AvahiServer *s = userdata;
520
assert(b);
521
522
/* Called whenever a new services becomes available on the LAN or is removed from the LAN */
523
524
switch (event) {
525
526
case AVAHI_BROWSER_FAILURE:
527
528
fprintf(stderr, "(Browser) %s\n", avahi_strerror(avahi_server_errno(server)));
529
avahi_simple_poll_quit(simple_poll);
530
return;
531
532
case AVAHI_BROWSER_NEW:
533
/* We ignore the returned resolver object. In the callback
534
function we free it. If the server is terminated before
535
the callback function is called the server will free
536
the resolver for us. */
537
538
if (!(avahi_s_service_resolver_new(s, interface, protocol, name, type, domain, AVAHI_PROTO_INET6, 0, resolve_callback, s)))
539
fprintf(stderr, "Failed to resolve service '%s': %s\n", name, avahi_strerror(avahi_server_errno(s)));
540
541
break;
542
543
case AVAHI_BROWSER_REMOVE:
544
break;
545
546
case AVAHI_BROWSER_ALL_FOR_NOW:
547
case AVAHI_BROWSER_CACHE_EXHAUSTED:
548
break;
549
}
550
}
551
552
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
553
AvahiServerConfig config;
619
static void resolve_callback(AvahiSServiceResolver *r,
620
AvahiIfIndex interface,
621
AVAHI_GCC_UNUSED AvahiProtocol protocol,
622
AvahiResolverEvent event,
623
const char *name,
624
const char *type,
625
const char *domain,
626
const char *host_name,
627
const AvahiAddress *address,
628
uint16_t port,
629
AVAHI_GCC_UNUSED AvahiStringList *txt,
630
AVAHI_GCC_UNUSED AvahiLookupResultFlags
631
flags,
632
void* userdata) {
633
mandos_context *mc = userdata;
634
assert(r); /* Spurious warning */
635
636
/* Called whenever a service has been resolved successfully or
637
timed out */
638
639
switch (event) {
640
default:
641
case AVAHI_RESOLVER_FAILURE:
642
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
643
" of type '%s' in domain '%s': %s\n", name, type, domain,
644
avahi_strerror(avahi_server_errno(mc->server)));
645
break;
646
647
case AVAHI_RESOLVER_FOUND:
648
{
649
char ip[AVAHI_ADDRESS_STR_MAX];
650
avahi_address_snprint(ip, sizeof(ip), address);
651
if(debug){
652
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
653
" port %d\n", name, host_name, ip, interface, port);
654
}
655
int ret = start_mandos_communication(ip, port, interface, mc);
656
if (ret == 0){
657
exit(EXIT_SUCCESS);
658
}
659
}
660
}
661
avahi_s_service_resolver_free(r);
662
}
663
664
static void browse_callback( AvahiSServiceBrowser *b,
665
AvahiIfIndex interface,
666
AvahiProtocol protocol,
667
AvahiBrowserEvent event,
668
const char *name,
669
const char *type,
670
const char *domain,
671
AVAHI_GCC_UNUSED AvahiLookupResultFlags
672
flags,
673
void* userdata) {
674
mandos_context *mc = userdata;
675
assert(b); /* Spurious warning */
676
677
/* Called whenever a new services becomes available on the LAN or
678
is removed from the LAN */
679
680
switch (event) {
681
default:
682
case AVAHI_BROWSER_FAILURE:
683
684
fprintf(stderr, "(Avahi browser) %s\n",
685
avahi_strerror(avahi_server_errno(mc->server)));
686
avahi_simple_poll_quit(mc->simple_poll);
687
return;
688
689
case AVAHI_BROWSER_NEW:
690
/* We ignore the returned Avahi resolver object. In the callback
691
function we free it. If the Avahi server is terminated before
692
the callback function is called the Avahi server will free the
693
resolver for us. */
694
695
if (!(avahi_s_service_resolver_new(mc->server, interface,
696
protocol, name, type, domain,
697
AVAHI_PROTO_INET6, 0,
698
resolve_callback, mc)))
699
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
700
name, avahi_strerror(avahi_server_errno(mc->server)));
701
break;
702
703
case AVAHI_BROWSER_REMOVE:
704
break;
705
706
case AVAHI_BROWSER_ALL_FOR_NOW:
707
case AVAHI_BROWSER_CACHE_EXHAUSTED:
708
if(debug){
709
fprintf(stderr, "No Mandos server found, still searching...\n");
710
}
711
break;
712
}
713
}
714
715
/* Combines file name and path and returns the malloced new
716
string. some sane checks could/should be added */
717
static const char *combinepath(const char *first, const char *second){
718
size_t f_len = strlen(first);
719
size_t s_len = strlen(second);
720
char *tmp = malloc(f_len + s_len + 2);
721
if (tmp == NULL){
722
return NULL;
723
}
724
if(f_len > 0){
725
memcpy(tmp, first, f_len); /* Spurious warning */
726
}
727
tmp[f_len] = '/';
728
if(s_len > 0){
729
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
730
}
731
tmp[f_len + 1 + s_len] = '\0';
732
return tmp;
733
}
734
735
736
int main(int argc, char *argv[]){
554
737
AvahiSServiceBrowser *sb = NULL;
555
const char db[] = "--debug";
556
738
int error;
557
int ret = 1;
558
int returncode = EXIT_SUCCESS;
559
char *basename = rindex(argv[0], '/');
560
if(basename == NULL){
561
basename = argv[0];
739
int ret;
740
int exitcode = EXIT_SUCCESS;
741
const char *interface = "eth0";
742
struct ifreq network;
743
int sd;
744
uid_t uid;
745
gid_t gid;
746
char *connect_to = NULL;
747
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
748
const char *pubkeyfile = "pubkey.txt";
749
const char *seckeyfile = "seckey.txt";
750
mandos_context mc = { .simple_poll = NULL, .server = NULL,
751
.dh_bits = 1024, .priority = "SECURE256"};
752
bool gnutls_initalized = false;
753
754
{
755
struct argp_option options[] = {
756
{ .name = "debug", .key = 128,
757
.doc = "Debug mode", .group = 3 },
758
{ .name = "connect", .key = 'c',
759
.arg = "IP",
760
.doc = "Connect directly to a sepcified mandos server",
761
.group = 1 },
762
{ .name = "interface", .key = 'i',
763
.arg = "INTERFACE",
764
.doc = "Interface that Avahi will conntect through",
765
.group = 1 },
766
{ .name = "keydir", .key = 'd',
767
.arg = "KEYDIR",
768
.doc = "Directory where the openpgp keyring is",
769
.group = 1 },
770
{ .name = "seckey", .key = 's',
771
.arg = "SECKEY",
772
.doc = "Secret openpgp key for gnutls authentication",
773
.group = 1 },
774
{ .name = "pubkey", .key = 'p',
775
.arg = "PUBKEY",
776
.doc = "Public openpgp key for gnutls authentication",
777
.group = 2 },
778
{ .name = "dh-bits", .key = 129,
779
.arg = "BITS",
780
.doc = "dh-bits to use in gnutls communication",
781
.group = 2 },
782
{ .name = "priority", .key = 130,
783
.arg = "PRIORITY",
784
.doc = "GNUTLS priority", .group = 1 },
785
{ .name = NULL }
786
};
787
788
789
error_t parse_opt (int key, char *arg,
790
struct argp_state *state) {
791
/* Get the INPUT argument from `argp_parse', which we know is
792
a pointer to our plugin list pointer. */
793
switch (key) {
794
case 128:
795
debug = true;
796
break;
797
case 'c':
798
connect_to = arg;
799
break;
800
case 'i':
801
interface = arg;
802
break;
803
case 'd':
804
keydir = arg;
805
break;
806
case 's':
807
seckeyfile = arg;
808
break;
809
case 'p':
810
pubkeyfile = arg;
811
break;
812
case 129:
813
errno = 0;
814
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
815
if (errno){
816
perror("strtol");
817
exit(EXIT_FAILURE);
818
}
819
break;
820
case 130:
821
mc.priority = arg;
822
break;
823
case ARGP_KEY_ARG:
824
argp_usage (state);
825
break;
826
case ARGP_KEY_END:
827
break;
828
default:
829
return ARGP_ERR_UNKNOWN;
830
}
831
return 0;
832
}
833
834
struct argp argp = { .options = options, .parser = parse_opt,
835
.args_doc = "",
836
.doc = "Mandos client -- Get and decrypt"
837
" passwords from mandos server" };
838
argp_parse (&argp, argc, argv, 0, 0, NULL);
839
}
840
841
pubkeyfile = combinepath(keydir, pubkeyfile);
842
if (pubkeyfile == NULL){
843
perror("combinepath");
844
exitcode = EXIT_FAILURE;
845
goto end;
846
}
847
848
seckeyfile = combinepath(keydir, seckeyfile);
849
if (seckeyfile == NULL){
850
perror("combinepath");
851
goto end;
852
}
853
854
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
855
if (ret == -1){
856
fprintf(stderr, "init_gnutls_global\n");
857
goto end;
562
858
} else {
563
basename++;
564
}
565
566
char *program_name = malloc(strlen(basename) + sizeof(db));
567
568
if (program_name == NULL){
569
perror("argv[0]");
570
return EXIT_FAILURE;
571
}
572
573
program_name[0] = '\0';
574
575
for (int i = 1; i < argc; i++){
576
if (not strncmp(argv[i], db, 5)){
577
strcat(strcat(strcat(program_name, db ), "="), basename);
578
if(not strcmp(argv[i], db) or not strcmp(argv[i], program_name)){
579
debug = true;
580
}
859
gnutls_initalized = true;
860
}
861
862
uid = getuid();
863
gid = getgid();
864
865
ret = setuid(uid);
866
if (ret == -1){
867
perror("setuid");
868
}
869
870
setgid(gid);
871
if (ret == -1){
872
perror("setgid");
873
}
874
875
if_index = (AvahiIfIndex) if_nametoindex(interface);
876
if(if_index == 0){
877
fprintf(stderr, "No such interface: \"%s\"\n", interface);
878
exit(EXIT_FAILURE);
879
}
880
881
if(connect_to != NULL){
882
/* Connect directly, do not use Zeroconf */
883
/* (Mainly meant for debugging) */
884
char *address = strrchr(connect_to, ':');
885
if(address == NULL){
886
fprintf(stderr, "No colon in address\n");
887
exitcode = EXIT_FAILURE;
888
goto end;
889
}
890
errno = 0;
891
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
892
if(errno){
893
perror("Bad port number");
894
exitcode = EXIT_FAILURE;
895
goto end;
896
}
897
*address = '\0';
898
address = connect_to;
899
ret = start_mandos_communication(address, port, if_index, &mc);
900
if(ret < 0){
901
exitcode = EXIT_FAILURE;
902
} else {
903
exitcode = EXIT_SUCCESS;
904
}
905
goto end;
906
}
907
908
/* If the interface is down, bring it up */
909
{
910
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
911
if(sd < 0) {
912
perror("socket");
913
exitcode = EXIT_FAILURE;
914
goto end;
915
}
916
strcpy(network.ifr_name, interface); /* Spurious warning */
917
ret = ioctl(sd, SIOCGIFFLAGS, &network);
918
if(ret == -1){
919
perror("ioctl SIOCGIFFLAGS");
920
exitcode = EXIT_FAILURE;
921
goto end;
922
}
923
if((network.ifr_flags & IFF_UP) == 0){
924
network.ifr_flags |= IFF_UP;
925
ret = ioctl(sd, SIOCSIFFLAGS, &network);
926
if(ret == -1){
927
perror("ioctl SIOCSIFFLAGS");
928
exitcode = EXIT_FAILURE;
929
goto end;
581
930
}
931
}
932
close(sd);
582
933
}
583
free(program_name);
584
934
585
935
if (not debug){
586
936
avahi_set_log_function(empty_log);
587
937
}
588
938
589
/* Initialize the psuedo-RNG */
590
srand(time(NULL));
591
592
/* Allocate main loop object */
593
if (!(simple_poll = avahi_simple_poll_new())) {
594
fprintf(stderr, "Failed to create simple poll object.\n");
595
596
goto exit;
597
}
598
599
/* Do not publish any local records */
600
avahi_server_config_init(&config);
601
config.publish_hinfo = 0;
602
config.publish_addresses = 0;
603
config.publish_workstation = 0;
604
config.publish_domain = 0;
605
606
/* Allocate a new server */
607
server = avahi_server_new(avahi_simple_poll_get(simple_poll), &config, NULL, NULL, &error);
608
609
/* Free the configuration data */
610
avahi_server_config_free(&config);
611
612
/* Check if creating the server object succeeded */
613
if (!server) {
614
fprintf(stderr, "Failed to create server: %s\n", avahi_strerror(error));
615
returncode = EXIT_FAILURE;
616
goto exit;
617
}
618
619
/* Create the service browser */
620
if (!(sb = avahi_s_service_browser_new(server, if_nametoindex("eth0"), AVAHI_PROTO_INET6, "_mandos._tcp", NULL, 0, browse_callback, server))) {
621
fprintf(stderr, "Failed to create service browser: %s\n", avahi_strerror(avahi_server_errno(server)));
622
returncode = EXIT_FAILURE;
623
goto exit;
939
/* Initialize the pseudo-RNG for Avahi */
940
srand((unsigned int) time(NULL));
941
942
/* Allocate main Avahi loop object */
943
mc.simple_poll = avahi_simple_poll_new();
944
if (mc.simple_poll == NULL) {
945
fprintf(stderr, "Avahi: Failed to create simple poll"
946
" object.\n");
947
exitcode = EXIT_FAILURE;
948
goto end;
949
}
950
951
{
952
AvahiServerConfig config;
953
/* Do not publish any local Zeroconf records */
954
avahi_server_config_init(&config);
955
config.publish_hinfo = 0;
956
config.publish_addresses = 0;
957
config.publish_workstation = 0;
958
config.publish_domain = 0;
959
960
/* Allocate a new server */
961
mc.server = avahi_server_new(avahi_simple_poll_get
962
(mc.simple_poll), &config, NULL,
963
NULL, &error);
964
965
/* Free the Avahi configuration data */
966
avahi_server_config_free(&config);
967
}
968
969
/* Check if creating the Avahi server object succeeded */
970
if (mc.server == NULL) {
971
fprintf(stderr, "Failed to create Avahi server: %s\n",
972
avahi_strerror(error));
973
exitcode = EXIT_FAILURE;
974
goto end;
975
}
976
977
/* Create the Avahi service browser */
978
sb = avahi_s_service_browser_new(mc.server, if_index,
979
AVAHI_PROTO_INET6,
980
"_mandos._tcp", NULL, 0,
981
browse_callback, &mc);
982
if (sb == NULL) {
983
fprintf(stderr, "Failed to create service browser: %s\n",
984
avahi_strerror(avahi_server_errno(mc.server)));
985
exitcode = EXIT_FAILURE;
986
goto end;
624
987
}
625
988
626
989
/* Run the main loop */
627
990
628
991
if (debug){
629
fprintf(stderr, "Starting avahi loop search\n");
992
fprintf(stderr, "Starting Avahi loop search\n");
630
993
}
631
994
632
avahi_simple_poll_loop(simple_poll);
995
avahi_simple_poll_loop(mc.simple_poll);
633
996
634
exit:
997
end:
635
998
636
999
if (debug){
637
1000
fprintf(stderr, "%s exiting\n", argv[0]);
638
1001
}
639
1002
640
1003
/* Cleanup things */
641
if (sb)
1004
if (sb != NULL)
642
1005
avahi_s_service_browser_free(sb);
643
1006
644
if (server)
645
avahi_server_free(server);
646
647
if (simple_poll)
648
avahi_simple_poll_free(simple_poll);
649
650
return ret;
1007
if (mc.server != NULL)
1008
avahi_server_free(mc.server);
1009
1010
if (mc.simple_poll != NULL)
1011
avahi_simple_poll_free(mc.simple_poll);
1012
free(pubkeyfile);
1013
free(seckeyfile);
1014
1015
if (gnutls_initalized){
1016
gnutls_certificate_free_credentials (mc.cred);
1017
gnutls_global_deinit ();
1018
}
1019
1020
return exitcode;
651
1021
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0