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- Committer: Teddy Hogeborn
- Date: 2008-08-04 20:43:31 UTC
- mfrom: (24.1.17 mandos)
- Revision ID: teddy@fukt.bsnet.se-20080804204331-zgu42g8ii997h1l2
* ca.pem: Removed.
* cert.pem: - '' -
* client-cert.pem: - '' -
* client-key.pem: - '' -
* crl.pem: - '' -
* key.pem: - '' -
* plugins.d/mandosclient.c (start_mandos_communication): Change "to"
to be a union. All users changed.
* server.py: Changed log severity for many log messages.
(Client.__init__): Take all config file settins as a dict instead of
as keyword arguments.
* cert.pem: - '' -
* client-cert.pem: - '' -
* client-key.pem: - '' -
* crl.pem: - '' -
* key.pem: - '' -
* plugins.d/mandosclient.c (start_mandos_communication): Change "to"
to be a union. All users changed.
* server.py: Changed log severity for many log messages.
(Client.__init__): Take all config file settins as a dict instead of
as keyword arguments.
- files added:
- server.conf
- files removed:
- ca.pem
- files renamed:
- mandos-clients.conf => clients.conf
- files modified:
- Makefile
added
removed
plugins.d/mandosclient.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));
245
322
return -1;
246
323
}
247
324
248
325
if(debug){
249
fprintf(stderr, "Attempting to use openpgp certificate %s"
250
" and keyfile %s as gnutls credentials\n", CERTFILE, KEYFILE);
326
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
327
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
328
seckeyfile);
251
329
}
252
330
253
331
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
332
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
333
if (ret != GNUTLS_E_SUCCESS) {
334
fprintf(stderr,
335
"Error[%d] while reading the OpenPGP key pair ('%s',"
336
" '%s')\n", ret, pubkeyfile, seckeyfile);
337
fprintf(stdout, "The GnuTLS error is: %s\n",
338
safer_gnutls_strerror(ret));
339
return -1;
340
}
341
342
/* GnuTLS server initialization */
343
ret = gnutls_dh_params_init(&mc->dh_params);
344
if (ret != GNUTLS_E_SUCCESS) {
345
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
346
" %s\n", safer_gnutls_strerror(ret));
347
return -1;
348
}
349
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
350
if (ret != GNUTLS_E_SUCCESS) {
351
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
352
safer_gnutls_strerror(ret));
353
return -1;
354
}
355
356
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
357
358
return 0;
359
}
360
361
static int init_gnutls_session(mandos_context *mc,
362
gnutls_session_t *session){
363
int ret;
364
/* GnuTLS session creation */
365
ret = gnutls_init(session, GNUTLS_SERVER);
366
if (ret != GNUTLS_E_SUCCESS){
367
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
368
safer_gnutls_strerror(ret));
369
}
370
371
{
372
const char *err;
373
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
374
if (ret != GNUTLS_E_SUCCESS) {
375
fprintf(stderr, "Syntax error at: %s\n", err);
376
fprintf(stderr, "GnuTLS error: %s\n",
377
safer_gnutls_strerror(ret));
378
return -1;
379
}
380
}
381
382
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
383
mc->cred);
384
if (ret != GNUTLS_E_SUCCESS) {
385
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
386
safer_gnutls_strerror(ret));
387
return -1;
388
}
389
304
390
/* ignore client certificate if any. */
305
gnutls_certificate_server_set_request (es->session, GNUTLS_CERT_IGNORE);
391
gnutls_certificate_server_set_request (*session,
392
GNUTLS_CERT_IGNORE);
306
393
307
gnutls_dh_set_prime_bits (es->session, DH_BITS);
394
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
308
395
309
396
return 0;
310
397
}
311
398
312
void empty_log(AvahiLogLevel level, const char *txt){}
399
/* Avahi log function callback */
400
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
401
__attribute__((unused)) const char *txt){}
313
402
314
int start_mandos_communcation(char *ip, uint16_t port){
403
/* Called when a Mandos server is found */
404
static int start_mandos_communication(const char *ip, uint16_t port,
405
AvahiIfIndex if_index,
406
mandos_context *mc){
315
407
int ret, tcp_sd;
316
struct sockaddr_in6 to;
317
struct in6_addr ip_addr;
318
encrypted_session es;
408
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
319
409
char *buffer = NULL;
320
410
char *decrypted_buffer;
321
411
size_t buffer_length = 0;
322
412
size_t buffer_capacity = 0;
323
413
ssize_t decrypted_buffer_size;
414
size_t written;
324
415
int retval = 0;
325
const char interface[] = "eth0";
326
416
char interface[IF_NAMESIZE];
417
gnutls_session_t session;
418
419
ret = init_gnutls_session (mc, &session);
420
if (ret != 0){
421
return -1;
422
}
423
327
424
if(debug){
328
fprintf(stderr, "Setting up a tcp connection to %s\n", ip);
425
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
426
ip, port);
329
427
}
330
428
331
429
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
335
433
}
336
434
337
435
if(debug){
436
if(if_indextoname((unsigned int)if_index, interface) == NULL){
437
perror("if_indextoname");
438
return -1;
439
}
338
440
fprintf(stderr, "Binding to interface %s\n", interface);
339
441
}
340
341
ret = setsockopt(tcp_sd, SOL_SOCKET, SO_BINDTODEVICE, interface, 5);
342
if(tcp_sd < 0) {
343
perror("setsockopt bindtodevice");
344
return -1;
345
}
346
442
347
memset(&to,0,sizeof(to));
348
to.sin6_family = AF_INET6;
349
ret = inet_pton(AF_INET6, ip, &ip_addr);
443
memset(&to,0,sizeof(to)); /* Spurious warning */
444
to.in6.sin6_family = AF_INET6;
445
/* It would be nice to have a way to detect if we were passed an
446
IPv4 address here. Now we assume an IPv6 address. */
447
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
350
448
if (ret < 0 ){
351
449
perror("inet_pton");
352
450
return -1;
353
}
451
}
354
452
if(ret == 0){
355
453
fprintf(stderr, "Bad address: %s\n", ip);
356
454
return -1;
357
455
}
358
to.sin6_port = htons(port);
359
to.sin6_scope_id = if_nametoindex(interface);
360
456
to.in6.sin6_port = htons(port); /* Spurious warning */
457
458
to.in6.sin6_scope_id = (uint32_t)if_index;
459
361
460
if(debug){
362
fprintf(stderr, "Connection to: %s\n", ip);
461
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
462
char addrstr[INET6_ADDRSTRLEN] = "";
463
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
464
sizeof(addrstr)) == NULL){
465
perror("inet_ntop");
466
} else {
467
if(strcmp(addrstr, ip) != 0){
468
fprintf(stderr, "Canonical address form: %s\n", addrstr);
469
}
470
}
363
471
}
364
472
365
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
473
ret = connect(tcp_sd, &to.in, sizeof(to));
366
474
if (ret < 0){
367
475
perror("connect");
368
476
return -1;
369
477
}
370
371
ret = initgnutls (&es);
372
if (ret != 0){
373
retval = -1;
374
return -1;
375
}
376
377
378
gnutls_transport_set_ptr (es.session, (gnutls_transport_ptr_t) tcp_sd);
379
478
479
const char *out = mandos_protocol_version;
480
written = 0;
481
while (true){
482
size_t out_size = strlen(out);
483
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
484
out_size - written));
485
if (ret == -1){
486
perror("write");
487
retval = -1;
488
goto mandos_end;
489
}
490
written += (size_t)ret;
491
if(written < out_size){
492
continue;
493
} else {
494
if (out == mandos_protocol_version){
495
written = 0;
496
out = "\r\n";
497
} else {
498
break;
499
}
500
}
501
}
502
380
503
if(debug){
381
fprintf(stderr, "Establishing tls session with %s\n", ip);
504
fprintf(stderr, "Establishing TLS session with %s\n", ip);
382
505
}
383
384
385
ret = gnutls_handshake (es.session);
506
507
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
508
509
ret = gnutls_handshake (session);
386
510
387
511
if (ret != GNUTLS_E_SUCCESS){
388
fprintf(stderr, "\n*** Handshake failed ***\n");
389
gnutls_perror (ret);
512
if(debug){
513
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
514
gnutls_perror (ret);
515
}
390
516
retval = -1;
391
goto exit;
517
goto mandos_end;
392
518
}
393
394
//Retrieve gpg packet that contains the wanted password
395
519
520
/* Read OpenPGP packet that contains the wanted password */
521
396
522
if(debug){
397
fprintf(stderr, "Retrieving pgp encrypted password from %s\n", ip);
523
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
524
ip);
398
525
}
399
526
400
527
while(true){
401
if (buffer_length + BUFFER_SIZE > buffer_capacity){
402
buffer = realloc(buffer, buffer_capacity + BUFFER_SIZE);
403
if (buffer == NULL){
404
perror("realloc");
405
goto exit;
406
}
407
buffer_capacity += BUFFER_SIZE;
528
buffer_capacity = adjustbuffer(&buffer, buffer_length,
529
buffer_capacity);
530
if (buffer_capacity == 0){
531
perror("adjustbuffer");
532
retval = -1;
533
goto mandos_end;
408
534
}
409
535
410
ret = gnutls_record_recv
411
(es.session, buffer+buffer_length, BUFFER_SIZE);
536
ret = gnutls_record_recv(session, buffer+buffer_length,
537
BUFFER_SIZE);
412
538
if (ret == 0){
413
539
break;
414
540
}
418
544
case GNUTLS_E_AGAIN:
419
545
break;
420
546
case GNUTLS_E_REHANDSHAKE:
421
ret = gnutls_handshake (es.session);
547
ret = gnutls_handshake (session);
422
548
if (ret < 0){
423
fprintf(stderr, "\n*** Handshake failed ***\n");
549
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
424
550
gnutls_perror (ret);
425
551
retval = -1;
426
goto exit;
552
goto mandos_end;
427
553
}
428
554
break;
429
555
default:
430
fprintf(stderr, "Unknown error while reading data from encrypted session with mandos server\n");
556
fprintf(stderr, "Unknown error while reading data from"
557
" encrypted session with Mandos server\n");
431
558
retval = -1;
432
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
433
goto exit;
559
gnutls_bye (session, GNUTLS_SHUT_RDWR);
560
goto mandos_end;
434
561
}
435
562
} else {
436
buffer_length += ret;
563
buffer_length += (size_t) ret;
437
564
}
438
565
}
439
566
567
if(debug){
568
fprintf(stderr, "Closing TLS session\n");
569
}
570
571
gnutls_bye (session, GNUTLS_SHUT_RDWR);
572
440
573
if (buffer_length > 0){
441
if ((decrypted_buffer_size = gpg_packet_decrypt(buffer, buffer_length, &decrypted_buffer, CERT_ROOT)) >= 0){
442
fwrite (decrypted_buffer, 1, decrypted_buffer_size, stdout);
574
decrypted_buffer_size = pgp_packet_decrypt(buffer,
575
buffer_length,
576
&decrypted_buffer,
577
keydir);
578
if (decrypted_buffer_size >= 0){
579
written = 0;
580
while(written < (size_t) decrypted_buffer_size){
581
ret = (int)fwrite (decrypted_buffer + written, 1,
582
(size_t)decrypted_buffer_size - written,
583
stdout);
584
if(ret == 0 and ferror(stdout)){
585
if(debug){
586
fprintf(stderr, "Error writing encrypted data: %s\n",
587
strerror(errno));
588
}
589
retval = -1;
590
break;
591
}
592
written += (size_t)ret;
593
}
443
594
free(decrypted_buffer);
444
595
} else {
445
596
retval = -1;
446
597
}
447
598
}
448
449
//shutdown procedure
450
451
if(debug){
452
fprintf(stderr, "Closing tls session\n");
453
}
454
599
600
/* Shutdown procedure */
601
602
mandos_end:
455
603
free(buffer);
456
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
457
exit:
458
604
close(tcp_sd);
459
gnutls_deinit (es.session);
460
gnutls_certificate_free_credentials (es.cred);
605
gnutls_deinit (session);
606
gnutls_certificate_free_credentials (mc->cred);
461
607
gnutls_global_deinit ();
462
608
return retval;
463
609
}
464
610
465
static AvahiSimplePoll *simple_poll = NULL;
466
static AvahiServer *server = NULL;
467
468
static void resolve_callback(
469
AvahiSServiceResolver *r,
470
AVAHI_GCC_UNUSED AvahiIfIndex interface,
471
AVAHI_GCC_UNUSED AvahiProtocol protocol,
472
AvahiResolverEvent event,
473
const char *name,
474
const char *type,
475
const char *domain,
476
const char *host_name,
477
const AvahiAddress *address,
478
uint16_t port,
479
AvahiStringList *txt,
480
AvahiLookupResultFlags flags,
481
AVAHI_GCC_UNUSED void* userdata) {
482
483
assert(r);
484
485
/* Called whenever a service has been resolved successfully or timed out */
486
487
switch (event) {
488
case AVAHI_RESOLVER_FAILURE:
489
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)));
490
break;
491
492
case AVAHI_RESOLVER_FOUND: {
493
char ip[AVAHI_ADDRESS_STR_MAX];
494
avahi_address_snprint(ip, sizeof(ip), address);
495
if(debug){
496
fprintf(stderr, "Mandos server found at %s on port %d\n", ip, port);
497
}
498
int ret = start_mandos_communcation(ip, port);
499
if (ret == 0){
500
exit(EXIT_SUCCESS);
501
} else {
502
exit(EXIT_FAILURE);
503
}
504
}
505
}
506
avahi_s_service_resolver_free(r);
507
}
508
509
static void browse_callback(
510
AvahiSServiceBrowser *b,
511
AvahiIfIndex interface,
512
AvahiProtocol protocol,
513
AvahiBrowserEvent event,
514
const char *name,
515
const char *type,
516
const char *domain,
517
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
518
void* userdata) {
519
520
AvahiServer *s = userdata;
521
assert(b);
522
523
/* Called whenever a new services becomes available on the LAN or is removed from the LAN */
524
525
switch (event) {
526
527
case AVAHI_BROWSER_FAILURE:
528
529
fprintf(stderr, "(Browser) %s\n", avahi_strerror(avahi_server_errno(server)));
530
avahi_simple_poll_quit(simple_poll);
531
return;
532
533
case AVAHI_BROWSER_NEW:
534
/* We ignore the returned resolver object. In the callback
535
function we free it. If the server is terminated before
536
the callback function is called the server will free
537
the resolver for us. */
538
539
if (!(avahi_s_service_resolver_new(s, interface, protocol, name, type, domain, AVAHI_PROTO_INET6, 0, resolve_callback, s)))
540
fprintf(stderr, "Failed to resolve service '%s': %s\n", name, avahi_strerror(avahi_server_errno(s)));
541
542
break;
543
544
case AVAHI_BROWSER_REMOVE:
545
break;
546
547
case AVAHI_BROWSER_ALL_FOR_NOW:
548
case AVAHI_BROWSER_CACHE_EXHAUSTED:
549
break;
550
}
551
}
552
553
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
554
AvahiServerConfig config;
611
static void resolve_callback(AvahiSServiceResolver *r,
612
AvahiIfIndex interface,
613
AVAHI_GCC_UNUSED AvahiProtocol protocol,
614
AvahiResolverEvent event,
615
const char *name,
616
const char *type,
617
const char *domain,
618
const char *host_name,
619
const AvahiAddress *address,
620
uint16_t port,
621
AVAHI_GCC_UNUSED AvahiStringList *txt,
622
AVAHI_GCC_UNUSED AvahiLookupResultFlags
623
flags,
624
void* userdata) {
625
mandos_context *mc = userdata;
626
assert(r); /* Spurious warning */
627
628
/* Called whenever a service has been resolved successfully or
629
timed out */
630
631
switch (event) {
632
default:
633
case AVAHI_RESOLVER_FAILURE:
634
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
635
" of type '%s' in domain '%s': %s\n", name, type, domain,
636
avahi_strerror(avahi_server_errno(mc->server)));
637
break;
638
639
case AVAHI_RESOLVER_FOUND:
640
{
641
char ip[AVAHI_ADDRESS_STR_MAX];
642
avahi_address_snprint(ip, sizeof(ip), address);
643
if(debug){
644
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
645
" port %d\n", name, host_name, ip, interface, port);
646
}
647
int ret = start_mandos_communication(ip, port, interface, mc);
648
if (ret == 0){
649
exit(EXIT_SUCCESS);
650
}
651
}
652
}
653
avahi_s_service_resolver_free(r);
654
}
655
656
static void browse_callback( AvahiSServiceBrowser *b,
657
AvahiIfIndex interface,
658
AvahiProtocol protocol,
659
AvahiBrowserEvent event,
660
const char *name,
661
const char *type,
662
const char *domain,
663
AVAHI_GCC_UNUSED AvahiLookupResultFlags
664
flags,
665
void* userdata) {
666
mandos_context *mc = userdata;
667
assert(b); /* Spurious warning */
668
669
/* Called whenever a new services becomes available on the LAN or
670
is removed from the LAN */
671
672
switch (event) {
673
default:
674
case AVAHI_BROWSER_FAILURE:
675
676
fprintf(stderr, "(Avahi browser) %s\n",
677
avahi_strerror(avahi_server_errno(mc->server)));
678
avahi_simple_poll_quit(mc->simple_poll);
679
return;
680
681
case AVAHI_BROWSER_NEW:
682
/* We ignore the returned Avahi resolver object. In the callback
683
function we free it. If the Avahi server is terminated before
684
the callback function is called the Avahi server will free the
685
resolver for us. */
686
687
if (!(avahi_s_service_resolver_new(mc->server, interface,
688
protocol, name, type, domain,
689
AVAHI_PROTO_INET6, 0,
690
resolve_callback, mc)))
691
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
692
name, avahi_strerror(avahi_server_errno(mc->server)));
693
break;
694
695
case AVAHI_BROWSER_REMOVE:
696
break;
697
698
case AVAHI_BROWSER_ALL_FOR_NOW:
699
case AVAHI_BROWSER_CACHE_EXHAUSTED:
700
if(debug){
701
fprintf(stderr, "No Mandos server found, still searching...\n");
702
}
703
break;
704
}
705
}
706
707
/* Combines file name and path and returns the malloced new
708
string. some sane checks could/should be added */
709
static const char *combinepath(const char *first, const char *second){
710
size_t f_len = strlen(first);
711
size_t s_len = strlen(second);
712
char *tmp = malloc(f_len + s_len + 2);
713
if (tmp == NULL){
714
return NULL;
715
}
716
if(f_len > 0){
717
memcpy(tmp, first, f_len); /* Spurious warning */
718
}
719
tmp[f_len] = '/';
720
if(s_len > 0){
721
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
722
}
723
tmp[f_len + 1 + s_len] = '\0';
724
return tmp;
725
}
726
727
728
int main(int argc, char *argv[]){
555
729
AvahiSServiceBrowser *sb = NULL;
556
const char db[] = "--debug";
557
730
int error;
558
int ret = 1;
559
int returncode = EXIT_SUCCESS;
560
char *basename = rindex(argv[0], '/');
561
if(basename == NULL){
562
basename = argv[0];
563
} else {
564
basename++;
565
}
731
int ret;
732
int exitcode = EXIT_SUCCESS;
733
const char *interface = "eth0";
734
struct ifreq network;
735
int sd;
736
uid_t uid;
737
gid_t gid;
738
char *connect_to = NULL;
739
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
740
const char *pubkeyfile = "pubkey.txt";
741
const char *seckeyfile = "seckey.txt";
742
mandos_context mc = { .simple_poll = NULL, .server = NULL,
743
.dh_bits = 1024, .priority = "SECURE256"};
566
744
567
char *program_name = malloc(strlen(basename) + sizeof(db));
745
{
746
struct argp_option options[] = {
747
{ .name = "debug", .key = 128,
748
.doc = "Debug mode", .group = 3 },
749
{ .name = "connect", .key = 'c',
750
.arg = "IP",
751
.doc = "Connect directly to a sepcified mandos server",
752
.group = 1 },
753
{ .name = "interface", .key = 'i',
754
.arg = "INTERFACE",
755
.doc = "Interface that Avahi will conntect through",
756
.group = 1 },
757
{ .name = "keydir", .key = 'd',
758
.arg = "KEYDIR",
759
.doc = "Directory where the openpgp keyring is",
760
.group = 1 },
761
{ .name = "seckey", .key = 's',
762
.arg = "SECKEY",
763
.doc = "Secret openpgp key for gnutls authentication",
764
.group = 1 },
765
{ .name = "pubkey", .key = 'p',
766
.arg = "PUBKEY",
767
.doc = "Public openpgp key for gnutls authentication",
768
.group = 2 },
769
{ .name = "dh-bits", .key = 129,
770
.arg = "BITS",
771
.doc = "dh-bits to use in gnutls communication",
772
.group = 2 },
773
{ .name = "priority", .key = 130,
774
.arg = "PRIORITY",
775
.doc = "GNUTLS priority", .group = 1 },
776
{ .name = NULL }
777
};
568
778
569
if (program_name == NULL){
570
perror("argv[0]");
571
return EXIT_FAILURE;
572
}
573
574
program_name[0] = '\0';
575
576
for (int i = 1; i < argc; i++){
577
if (not strncmp(argv[i], db, 5)){
578
strcat(strcat(strcat(program_name, db ), "="), basename);
579
if(not strcmp(argv[i], db) or not strcmp(argv[i], program_name)){
580
debug = true;
779
780
error_t parse_opt (int key, char *arg,
781
struct argp_state *state) {
782
/* Get the INPUT argument from `argp_parse', which we know is
783
a pointer to our plugin list pointer. */
784
switch (key) {
785
case 128:
786
debug = true;
787
break;
788
case 'c':
789
connect_to = arg;
790
break;
791
case 'i':
792
interface = arg;
793
break;
794
case 'd':
795
keydir = arg;
796
break;
797
case 's':
798
seckeyfile = arg;
799
break;
800
case 'p':
801
pubkeyfile = arg;
802
break;
803
case 129:
804
errno = 0;
805
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
806
if (errno){
807
perror("strtol");
808
exit(EXIT_FAILURE);
581
809
}
582
}
583
}
584
free(program_name);
585
810
break;
811
case 130:
812
mc.priority = arg;
813
break;
814
case ARGP_KEY_ARG:
815
argp_usage (state);
816
break;
817
case ARGP_KEY_END:
818
break;
819
default:
820
return ARGP_ERR_UNKNOWN;
821
}
822
return 0;
823
}
824
825
struct argp argp = { .options = options, .parser = parse_opt,
826
.args_doc = "",
827
.doc = "Mandos client -- Get and decrypt"
828
" passwords from mandos server" };
829
argp_parse (&argp, argc, argv, 0, 0, NULL);
830
}
831
832
pubkeyfile = combinepath(keydir, pubkeyfile);
833
if (pubkeyfile == NULL){
834
perror("combinepath");
835
exitcode = EXIT_FAILURE;
836
goto end;
837
}
838
839
seckeyfile = combinepath(keydir, seckeyfile);
840
if (seckeyfile == NULL){
841
perror("combinepath");
842
goto end;
843
}
844
845
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
846
if (ret == -1){
847
fprintf(stderr, "init_gnutls_global\n");
848
goto end;
849
}
850
851
uid = getuid();
852
gid = getgid();
853
854
ret = setuid(uid);
855
if (ret == -1){
856
perror("setuid");
857
}
858
859
setgid(gid);
860
if (ret == -1){
861
perror("setgid");
862
}
863
864
if_index = (AvahiIfIndex) if_nametoindex(interface);
865
if(if_index == 0){
866
fprintf(stderr, "No such interface: \"%s\"\n", interface);
867
exit(EXIT_FAILURE);
868
}
869
870
if(connect_to != NULL){
871
/* Connect directly, do not use Zeroconf */
872
/* (Mainly meant for debugging) */
873
char *address = strrchr(connect_to, ':');
874
if(address == NULL){
875
fprintf(stderr, "No colon in address\n");
876
exitcode = EXIT_FAILURE;
877
goto end;
878
}
879
errno = 0;
880
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
881
if(errno){
882
perror("Bad port number");
883
exitcode = EXIT_FAILURE;
884
goto end;
885
}
886
*address = '\0';
887
address = connect_to;
888
ret = start_mandos_communication(address, port, if_index, &mc);
889
if(ret < 0){
890
exitcode = EXIT_FAILURE;
891
} else {
892
exitcode = EXIT_SUCCESS;
893
}
894
goto end;
895
}
896
897
/* If the interface is down, bring it up */
898
{
899
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
900
if(sd < 0) {
901
perror("socket");
902
exitcode = EXIT_FAILURE;
903
goto end;
904
}
905
strcpy(network.ifr_name, interface); /* Spurious warning */
906
ret = ioctl(sd, SIOCGIFFLAGS, &network);
907
if(ret == -1){
908
perror("ioctl SIOCGIFFLAGS");
909
exitcode = EXIT_FAILURE;
910
goto end;
911
}
912
if((network.ifr_flags & IFF_UP) == 0){
913
network.ifr_flags |= IFF_UP;
914
ret = ioctl(sd, SIOCSIFFLAGS, &network);
915
if(ret == -1){
916
perror("ioctl SIOCSIFFLAGS");
917
exitcode = EXIT_FAILURE;
918
goto end;
919
}
920
}
921
close(sd);
922
}
923
586
924
if (not debug){
587
925
avahi_set_log_function(empty_log);
588
926
}
589
927
590
/* Initialize the psuedo-RNG */
591
srand(time(NULL));
592
593
/* Allocate main loop object */
594
if (!(simple_poll = avahi_simple_poll_new())) {
595
fprintf(stderr, "Failed to create simple poll object.\n");
596
597
goto exit;
598
}
599
600
/* Do not publish any local records */
601
avahi_server_config_init(&config);
602
config.publish_hinfo = 0;
603
config.publish_addresses = 0;
604
config.publish_workstation = 0;
605
config.publish_domain = 0;
606
607
/* Allocate a new server */
608
server = avahi_server_new(avahi_simple_poll_get(simple_poll), &config, NULL, NULL, &error);
609
610
/* Free the configuration data */
611
avahi_server_config_free(&config);
612
613
/* Check if creating the server object succeeded */
614
if (!server) {
615
fprintf(stderr, "Failed to create server: %s\n", avahi_strerror(error));
616
returncode = EXIT_FAILURE;
617
goto exit;
618
}
619
620
/* Create the service browser */
621
if (!(sb = avahi_s_service_browser_new(server, if_nametoindex("eth0"), AVAHI_PROTO_INET6, "_mandos._tcp", NULL, 0, browse_callback, server))) {
622
fprintf(stderr, "Failed to create service browser: %s\n", avahi_strerror(avahi_server_errno(server)));
623
returncode = EXIT_FAILURE;
624
goto exit;
928
/* Initialize the pseudo-RNG for Avahi */
929
srand((unsigned int) time(NULL));
930
931
/* Allocate main Avahi loop object */
932
mc.simple_poll = avahi_simple_poll_new();
933
if (mc.simple_poll == NULL) {
934
fprintf(stderr, "Avahi: Failed to create simple poll"
935
" object.\n");
936
exitcode = EXIT_FAILURE;
937
goto end;
938
}
939
940
{
941
AvahiServerConfig config;
942
/* Do not publish any local Zeroconf records */
943
avahi_server_config_init(&config);
944
config.publish_hinfo = 0;
945
config.publish_addresses = 0;
946
config.publish_workstation = 0;
947
config.publish_domain = 0;
948
949
/* Allocate a new server */
950
mc.server = avahi_server_new(avahi_simple_poll_get
951
(mc.simple_poll), &config, NULL,
952
NULL, &error);
953
954
/* Free the Avahi configuration data */
955
avahi_server_config_free(&config);
956
}
957
958
/* Check if creating the Avahi server object succeeded */
959
if (mc.server == NULL) {
960
fprintf(stderr, "Failed to create Avahi server: %s\n",
961
avahi_strerror(error));
962
exitcode = EXIT_FAILURE;
963
goto end;
964
}
965
966
/* Create the Avahi service browser */
967
sb = avahi_s_service_browser_new(mc.server, if_index,
968
AVAHI_PROTO_INET6,
969
"_mandos._tcp", NULL, 0,
970
browse_callback, &mc);
971
if (sb == NULL) {
972
fprintf(stderr, "Failed to create service browser: %s\n",
973
avahi_strerror(avahi_server_errno(mc.server)));
974
exitcode = EXIT_FAILURE;
975
goto end;
625
976
}
626
977
627
978
/* Run the main loop */
628
979
629
980
if (debug){
630
fprintf(stderr, "Starting avahi loop search\n");
981
fprintf(stderr, "Starting Avahi loop search\n");
631
982
}
632
983
633
avahi_simple_poll_loop(simple_poll);
984
avahi_simple_poll_loop(mc.simple_poll);
634
985
635
exit:
986
end:
636
987
637
988
if (debug){
638
989
fprintf(stderr, "%s exiting\n", argv[0]);
639
990
}
640
991
641
992
/* Cleanup things */
642
if (sb)
993
if (sb != NULL)
643
994
avahi_s_service_browser_free(sb);
644
995
645
if (server)
646
avahi_server_free(server);
647
648
if (simple_poll)
649
avahi_simple_poll_free(simple_poll);
650
651
return ret;
996
if (mc.server != NULL)
997
avahi_server_free(mc.server);
998
999
if (mc.simple_poll != NULL)
1000
avahi_simple_poll_free(mc.simple_poll);
1001
free(pubkeyfile);
1002
free(seckeyfile);
1003
1004
return exitcode;
652
1005
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0