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- Committer: Teddy Hogeborn
- Date: 2008-07-21 01:50:31 UTC
- Revision ID: teddy@fukt.bsnet.se-20080721015031-ivjiclli2j06hwgs
* Makefile: Include targets for all binaries.
* plugins.d/Makefile: Do nothing but call the parent Makefile.
* server.py: Added copyright statement and information.
(Client.__init__): Added doc string.
(Client.stop): Bug fix: Only log message if stopping for the first
time. Check if the "stop_initiator_tag" and
"checker_initiator_tag" attributes exist before using
them.
(Client.__del__): Call self.stop() instead of doing things here.
(Client.checker_callback): Set self.checker_callback_tag and
self.checker to None unconditionally and
immediately.
(Client.stop_checker): Added some checks to handle multiple calls.
(tcp_handler.handle): Use "self.server.clients" instead of "clients".
(__main__): Moved all code to the "main" function.
(main): New. New option "--address". Instantiate IPv6_TCPServer
with "options.address". Log before starting main loop.
(main.cleanup) Use "clients.pop()" to remove clients from the set as
they are stopped.
* plugins.d/Makefile: Do nothing but call the parent Makefile.
* server.py: Added copyright statement and information.
(Client.__init__): Added doc string.
(Client.stop): Bug fix: Only log message if stopping for the first
time. Check if the "stop_initiator_tag" and
"checker_initiator_tag" attributes exist before using
them.
(Client.__del__): Call self.stop() instead of doing things here.
(Client.checker_callback): Set self.checker_callback_tag and
self.checker to None unconditionally and
immediately.
(Client.stop_checker): Added some checks to handle multiple calls.
(tcp_handler.handle): Use "self.server.clients" instead of "clients".
(__main__): Moved all code to the "main" function.
(main): New. New option "--address". Instantiate IPv6_TCPServer
with "options.address". Log before starting main loop.
(main.cleanup) Use "clients.pop()" to remove clients from the set as
they are stopped.
- files added:
- ca.pem
- files removed:
- server.conf
- files renamed:
- clients.conf => mandos-clients.conf
- files modified:
- Makefile
added
removed
plugins.d/mandosclient.c
1
/* -*- coding: utf-8 -*- */
2
/*
3
* Mandos client - get and decrypt data from a Mandos server
1
/* $Id$ */
2
3
/* PLEASE NOTE *
4
* This file demonstrates how to use Avahi's core API, this is
5
* the embeddable mDNS stack for embedded applications.
4
6
*
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>.
7
* End user applications should *not* use this API and should use
8
* the D-Bus or C APIs, please see
9
* client-browse-services.c and glib-integration.c
10
*
11
* I repeat, you probably do *not* want to use this example.
29
12
*/
30
13
31
/* Needed by GPGME, specifically gpgme_data_seek() */
14
/***
15
This file is part of avahi.
16
17
avahi is free software; you can redistribute it and/or modify it
18
under the terms of the GNU Lesser General Public License as
19
published by the Free Software Foundation; either version 2.1 of the
20
License, or (at your option) any later version.
21
22
avahi is distributed in the hope that it will be useful, but WITHOUT
23
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
24
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
25
Public License for more details.
26
27
You should have received a copy of the GNU Lesser General Public
28
License along with avahi; if not, write to the Free Software
29
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
30
USA.
31
***/
32
32
33
#define _LARGEFILE_SOURCE
33
34
#define _FILE_OFFSET_BITS 64
34
35
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
36
37
36
#include <stdio.h>
38
37
#include <assert.h>
39
38
#include <stdlib.h>
40
39
#include <time.h>
41
40
#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 */
46
41
47
42
#include <avahi-core/core.h>
48
43
#include <avahi-core/lookup.h>
51
46
#include <avahi-common/malloc.h>
52
47
#include <avahi-common/error.h>
53
48
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 */
49
//mandos client part
50
#include <sys/types.h> /* socket(), setsockopt(), inet_pton() */
51
#include <sys/socket.h> /* socket(), setsockopt(), struct sockaddr_in6, struct in6_addr, inet_pton() */
52
#include <gnutls/gnutls.h> /* ALL GNUTLS STUFF */
53
#include <gnutls/openpgp.h> /* gnutls with openpgp stuff */
60
54
61
55
#include <unistd.h> /* close() */
62
56
#include <netinet/in.h>
64
58
#include <string.h> /* memset */
65
59
#include <arpa/inet.h> /* inet_pton() */
66
60
#include <iso646.h> /* not */
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 */
61
62
// gpgme
72
63
#include <errno.h> /* perror() */
73
64
#include <gpgme.h>
74
65
66
67
#ifndef CERT_ROOT
68
#define CERT_ROOT "/conf/conf.d/cryptkeyreq/"
69
#endif
70
#define CERTFILE CERT_ROOT "openpgp-client.txt"
71
#define KEYFILE CERT_ROOT "openpgp-client-key.txt"
75
72
#define BUFFER_SIZE 256
76
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>";
82
83
/* Used for passing in values through the Avahi callback functions */
73
#define DH_BITS 1024
74
84
75
typedef struct {
85
AvahiSimplePoll *simple_poll;
86
AvahiServer *server;
76
gnutls_session_t session;
87
77
gnutls_certificate_credentials_t cred;
88
unsigned int dh_bits;
89
78
gnutls_dh_params_t dh_params;
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){
79
} encrypted_session;
80
81
82
ssize_t gpg_packet_decrypt (char *packet, size_t packet_size, char **new_packet, char *homedir){
118
83
gpgme_data_t dh_crypto, dh_plain;
119
84
gpgme_ctx_t ctx;
120
85
gpgme_error_t rc;
121
86
ssize_t ret;
122
size_t plaintext_capacity = 0;
123
ssize_t plaintext_length = 0;
87
size_t new_packet_capacity = 0;
88
size_t new_packet_length = 0;
124
89
gpgme_engine_info_t engine_info;
125
126
if (debug){
127
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
128
}
129
90
130
91
/* Init GPGME */
131
92
gpgme_check_version(NULL);
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
}
93
gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
138
94
139
/* Set GPGME home directory for the OpenPGP engine only */
95
/* Set GPGME home directory */
140
96
rc = gpgme_get_engine_info (&engine_info);
141
97
if (rc != GPG_ERR_NO_ERROR){
142
98
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
152
108
engine_info = engine_info->next;
153
109
}
154
110
if(engine_info == NULL){
155
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
111
fprintf(stderr, "Could not set home dir to %s\n", homedir);
156
112
return -1;
157
113
}
158
114
159
/* Create new GPGME data buffer from memory cryptotext */
160
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
161
0);
115
/* Create new GPGME data buffer from packet buffer */
116
rc = gpgme_data_new_from_mem(&dh_crypto, packet, packet_size, 0);
162
117
if (rc != GPG_ERR_NO_ERROR){
163
118
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
164
119
gpgme_strsource(rc), gpgme_strerror(rc));
170
125
if (rc != GPG_ERR_NO_ERROR){
171
126
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
172
127
gpgme_strsource(rc), gpgme_strerror(rc));
173
gpgme_data_release(dh_crypto);
174
128
return -1;
175
129
}
176
130
179
133
if (rc != GPG_ERR_NO_ERROR){
180
134
fprintf(stderr, "bad gpgme_new: %s: %s\n",
181
135
gpgme_strsource(rc), gpgme_strerror(rc));
182
plaintext_length = -1;
183
goto decrypt_end;
136
return -1;
184
137
}
185
138
186
/* Decrypt data from the cryptotext data buffer to the plaintext
187
data buffer */
139
/* Decrypt data from the FILE pointer to the plaintext data buffer */
188
140
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
189
141
if (rc != GPG_ERR_NO_ERROR){
190
142
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
191
143
gpgme_strsource(rc), gpgme_strerror(rc));
192
plaintext_length = -1;
193
goto decrypt_end;
194
}
195
196
if(debug){
197
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
198
}
199
200
if (debug){
201
gpgme_decrypt_result_t result;
202
result = gpgme_op_decrypt_result(ctx);
203
if (result == NULL){
204
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
205
} else {
206
fprintf(stderr, "Unsupported algorithm: %s\n",
207
result->unsupported_algorithm);
208
fprintf(stderr, "Wrong key usage: %d\n",
209
result->wrong_key_usage);
210
if(result->file_name != NULL){
211
fprintf(stderr, "File name: %s\n", result->file_name);
212
}
213
gpgme_recipient_t recipient;
214
recipient = result->recipients;
215
if(recipient){
216
while(recipient != NULL){
217
fprintf(stderr, "Public key algorithm: %s\n",
218
gpgme_pubkey_algo_name(recipient->pubkey_algo));
219
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
220
fprintf(stderr, "Secret key available: %s\n",
221
recipient->status == GPG_ERR_NO_SECKEY
222
? "No" : "Yes");
223
recipient = recipient->next;
224
}
225
}
226
}
227
}
144
return -1;
145
}
146
147
/* gpgme_decrypt_result_t result; */
148
/* result = gpgme_op_decrypt_result(ctx); */
149
/* fprintf(stderr, "Unsupported algorithm: %s\n", result->unsupported_algorithm); */
150
/* fprintf(stderr, "Wrong key usage: %d\n", result->wrong_key_usage); */
151
/* if(result->file_name != NULL){ */
152
/* fprintf(stderr, "File name: %s\n", result->file_name); */
153
/* } */
154
/* gpgme_recipient_t recipient; */
155
/* recipient = result->recipients; */
156
/* if(recipient){ */
157
/* while(recipient != NULL){ */
158
/* fprintf(stderr, "Public key algorithm: %s\n", */
159
/* gpgme_pubkey_algo_name(recipient->pubkey_algo)); */
160
/* fprintf(stderr, "Key ID: %s\n", recipient->keyid); */
161
/* fprintf(stderr, "Secret key available: %s\n", */
162
/* recipient->status == GPG_ERR_NO_SECKEY ? "No" : "Yes"); */
163
/* recipient = recipient->next; */
164
/* } */
165
/* } */
166
167
/* Delete the GPGME FILE pointer cryptotext data buffer */
168
gpgme_data_release(dh_crypto);
228
169
229
170
/* Seek back to the beginning of the GPGME plaintext data buffer */
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;
171
gpgme_data_seek(dh_plain, 0, SEEK_SET);
172
173
*new_packet = 0;
237
174
while(true){
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;
175
if (new_packet_length + BUFFER_SIZE > new_packet_capacity){
176
*new_packet = realloc(*new_packet, new_packet_capacity + BUFFER_SIZE);
177
if (*new_packet == NULL){
178
perror("realloc");
179
return -1;
180
}
181
new_packet_capacity += BUFFER_SIZE;
245
182
}
246
183
247
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
248
BUFFER_SIZE);
184
ret = gpgme_data_read(dh_plain, *new_packet + new_packet_length, BUFFER_SIZE);
249
185
/* Print the data, if any */
250
186
if (ret == 0){
251
/* EOF */
187
/* If password is empty, then a incorrect error will be printed */
252
188
break;
253
189
}
254
190
if(ret < 0){
255
191
perror("gpgme_data_read");
256
plaintext_length = -1;
257
goto decrypt_end;
192
return -1;
258
193
}
259
plaintext_length += ret;
194
new_packet_length += ret;
260
195
}
261
196
262
if(debug){
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");
268
}
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 */
197
/* Delete the GPGME plaintext data buffer */
276
198
gpgme_data_release(dh_plain);
277
return plaintext_length;
199
return new_packet_length;
278
200
}
279
201
280
202
static const char * safer_gnutls_strerror (int value) {
284
206
return ret;
285
207
}
286
208
287
/* GnuTLS log function callback */
288
static void debuggnutls(__attribute__((unused)) int level,
289
const char* string){
290
fprintf(stderr, "GnuTLS: %s", string);
209
void debuggnutls(int level, const char* string){
210
fprintf(stderr, "%s", string);
291
211
}
292
212
293
static int init_gnutls_global(mandos_context *mc,
294
const char *pubkeyfile,
295
const char *seckeyfile){
213
int initgnutls(encrypted_session *es){
214
const char *err;
296
215
int ret;
297
216
298
if(debug){
299
fprintf(stderr, "Initializing GnuTLS\n");
300
}
301
302
217
if ((ret = gnutls_global_init ())
303
218
!= GNUTLS_E_SUCCESS) {
304
fprintf (stderr, "GnuTLS global_init: %s\n",
305
safer_gnutls_strerror(ret));
219
fprintf (stderr, "global_init: %s\n", safer_gnutls_strerror(ret));
306
220
return -1;
307
221
}
308
309
if (debug){
310
/* "Use a log level over 10 to enable all debugging options."
311
* - GnuTLS manual
312
*/
313
gnutls_global_set_log_level(11);
314
gnutls_global_set_log_function(debuggnutls);
315
}
316
317
/* OpenPGP credentials */
318
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
222
223
/* Uncomment to enable full debuggin on the gnutls library */
224
/* gnutls_global_set_log_level(11); */
225
/* gnutls_global_set_log_function(debuggnutls); */
226
227
228
/* openpgp credentials */
229
if ((ret = gnutls_certificate_allocate_credentials (&es->cred))
319
230
!= GNUTLS_E_SUCCESS) {
320
fprintf (stderr, "GnuTLS memory error: %s\n",
321
safer_gnutls_strerror(ret));
231
fprintf (stderr, "memory error: %s\n", safer_gnutls_strerror(ret));
322
232
return -1;
323
233
}
324
325
if(debug){
326
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
327
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
328
seckeyfile);
329
}
330
234
331
235
ret = gnutls_certificate_set_openpgp_key_file
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
236
(es->cred, CERTFILE, KEYFILE, GNUTLS_OPENPGP_FMT_BASE64);
237
if (ret != GNUTLS_E_SUCCESS) {
238
fprintf
239
(stderr, "Error[%d] while reading the OpenPGP key pair ('%s', '%s')\n",
240
ret, CERTFILE, KEYFILE);
241
fprintf(stdout, "The Error is: %s\n",
242
safer_gnutls_strerror(ret));
243
return -1;
244
}
245
246
//Gnutls server initialization
247
if ((ret = gnutls_dh_params_init (&es->dh_params))
248
!= GNUTLS_E_SUCCESS) {
249
fprintf (stderr, "Error in dh parameter initialization: %s\n",
250
safer_gnutls_strerror(ret));
251
return -1;
252
}
253
254
if ((ret = gnutls_dh_params_generate2 (es->dh_params, DH_BITS))
255
!= GNUTLS_E_SUCCESS) {
256
fprintf (stderr, "Error in prime generation: %s\n",
257
safer_gnutls_strerror(ret));
258
return -1;
259
}
260
261
gnutls_certificate_set_dh_params (es->cred, es->dh_params);
262
263
// Gnutls session creation
264
if ((ret = gnutls_init (&es->session, GNUTLS_SERVER))
265
!= GNUTLS_E_SUCCESS){
266
fprintf(stderr, "Error in gnutls session initialization: %s\n",
267
safer_gnutls_strerror(ret));
268
}
269
270
if ((ret = gnutls_priority_set_direct (es->session, "NORMAL", &err))
271
!= GNUTLS_E_SUCCESS) {
272
fprintf(stderr, "Syntax error at: %s\n", err);
273
fprintf(stderr, "Gnutls error: %s\n",
274
safer_gnutls_strerror(ret));
275
return -1;
276
}
277
278
if ((ret = gnutls_credentials_set
279
(es->session, GNUTLS_CRD_CERTIFICATE, es->cred))
280
!= GNUTLS_E_SUCCESS) {
281
fprintf(stderr, "Error setting a credentials set: %s\n",
282
safer_gnutls_strerror(ret));
283
return -1;
284
}
285
390
286
/* ignore client certificate if any. */
391
gnutls_certificate_server_set_request (*session,
392
GNUTLS_CERT_IGNORE);
287
gnutls_certificate_server_set_request (es->session, GNUTLS_CERT_IGNORE);
393
288
394
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
289
gnutls_dh_set_prime_bits (es->session, DH_BITS);
395
290
396
291
return 0;
397
292
}
398
293
399
/* Avahi log function callback */
400
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
401
__attribute__((unused)) const char *txt){}
294
void empty_log(AvahiLogLevel level, const char *txt){}
402
295
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){
296
int start_mandos_communcation(char *ip, uint16_t port){
407
297
int ret, tcp_sd;
408
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
298
struct sockaddr_in6 to;
299
struct in6_addr ip_addr;
300
encrypted_session es;
409
301
char *buffer = NULL;
410
302
char *decrypted_buffer;
411
303
size_t buffer_length = 0;
412
304
size_t buffer_capacity = 0;
413
305
ssize_t decrypted_buffer_size;
414
size_t written;
415
306
int retval = 0;
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
424
if(debug){
425
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
426
ip, port);
427
}
307
428
308
429
309
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
430
310
if(tcp_sd < 0) {
431
311
perror("socket");
432
312
return -1;
433
313
}
434
435
if(debug){
436
if(if_indextoname((unsigned int)if_index, interface) == NULL){
437
perror("if_indextoname");
438
return -1;
439
}
440
fprintf(stderr, "Binding to interface %s\n", interface);
314
315
ret = setsockopt(tcp_sd, SOL_SOCKET, SO_BINDTODEVICE, "eth0", 5);
316
if(tcp_sd < 0) {
317
perror("setsockopt bindtodevice");
318
return -1;
441
319
}
442
320
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);
321
memset(&to,0,sizeof(to));
322
to.sin6_family = AF_INET6;
323
ret = inet_pton(AF_INET6, ip, &ip_addr);
448
324
if (ret < 0 ){
449
325
perror("inet_pton");
450
326
return -1;
451
}
327
}
452
328
if(ret == 0){
453
329
fprintf(stderr, "Bad address: %s\n", ip);
454
330
return -1;
455
331
}
456
to.in6.sin6_port = htons(port); /* Spurious warning */
457
458
to.in6.sin6_scope_id = (uint32_t)if_index;
459
460
if(debug){
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
}
471
}
472
473
ret = connect(tcp_sd, &to.in, sizeof(to));
332
to.sin6_port = htons(port);
333
to.sin6_scope_id = if_nametoindex("eth0");
334
335
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
474
336
if (ret < 0){
475
337
perror("connect");
476
338
return -1;
477
339
}
340
341
ret = initgnutls (&es);
342
if (ret != 0){
343
retval = -1;
344
return -1;
345
}
346
347
348
gnutls_transport_set_ptr (es.session, (gnutls_transport_ptr_t) tcp_sd);
478
349
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
503
if(debug){
504
fprintf(stderr, "Establishing TLS session with %s\n", ip);
505
}
506
507
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
508
509
ret = gnutls_handshake (session);
350
ret = gnutls_handshake (es.session);
510
351
511
352
if (ret != GNUTLS_E_SUCCESS){
512
if(debug){
513
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
514
gnutls_perror (ret);
515
}
353
fprintf(stderr, "\n*** Handshake failed ***\n");
354
gnutls_perror (ret);
516
355
retval = -1;
517
goto mandos_end;
518
}
519
520
/* Read OpenPGP packet that contains the wanted password */
521
522
if(debug){
523
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
524
ip);
356
goto exit;
525
357
}
526
358
359
//retrive password
527
360
while(true){
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;
361
if (buffer_length + BUFFER_SIZE > buffer_capacity){
362
buffer = realloc(buffer, buffer_capacity + BUFFER_SIZE);
363
if (buffer == NULL){
364
perror("realloc");
365
goto exit;
366
}
367
buffer_capacity += BUFFER_SIZE;
534
368
}
535
369
536
ret = gnutls_record_recv(session, buffer+buffer_length,
537
BUFFER_SIZE);
370
ret = gnutls_record_recv
371
(es.session, buffer+buffer_length, BUFFER_SIZE);
538
372
if (ret == 0){
539
373
break;
540
374
}
544
378
case GNUTLS_E_AGAIN:
545
379
break;
546
380
case GNUTLS_E_REHANDSHAKE:
547
ret = gnutls_handshake (session);
381
ret = gnutls_handshake (es.session);
548
382
if (ret < 0){
549
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
383
fprintf(stderr, "\n*** Handshake failed ***\n");
550
384
gnutls_perror (ret);
551
385
retval = -1;
552
goto mandos_end;
386
goto exit;
553
387
}
554
388
break;
555
389
default:
556
fprintf(stderr, "Unknown error while reading data from"
557
" encrypted session with Mandos server\n");
390
fprintf(stderr, "Unknown error while reading data from encrypted session with mandos server\n");
558
391
retval = -1;
559
gnutls_bye (session, GNUTLS_SHUT_RDWR);
560
goto mandos_end;
392
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
393
goto exit;
561
394
}
562
395
} else {
563
buffer_length += (size_t) ret;
396
buffer_length += ret;
564
397
}
565
398
}
566
567
if(debug){
568
fprintf(stderr, "Closing TLS session\n");
569
}
570
571
gnutls_bye (session, GNUTLS_SHUT_RDWR);
572
399
573
400
if (buffer_length > 0){
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
}
401
if ((decrypted_buffer_size = gpg_packet_decrypt(buffer, buffer_length, &decrypted_buffer, CERT_ROOT)) == 0){
402
retval = -1;
403
} else {
404
fwrite (decrypted_buffer, 1, decrypted_buffer_size, stdout);
594
405
free(decrypted_buffer);
595
} else {
596
retval = -1;
597
406
}
598
407
}
599
600
/* Shutdown procedure */
601
602
mandos_end:
408
603
409
free(buffer);
410
411
//shutdown procedure
412
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
413
exit:
604
414
close(tcp_sd);
605
gnutls_deinit (session);
606
gnutls_certificate_free_credentials (mc->cred);
415
gnutls_deinit (es.session);
416
gnutls_certificate_free_credentials (es.cred);
607
417
gnutls_global_deinit ();
608
418
return retval;
609
419
}
610
420
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[]){
421
static AvahiSimplePoll *simple_poll = NULL;
422
static AvahiServer *server = NULL;
423
424
static void resolve_callback(
425
AvahiSServiceResolver *r,
426
AVAHI_GCC_UNUSED AvahiIfIndex interface,
427
AVAHI_GCC_UNUSED AvahiProtocol protocol,
428
AvahiResolverEvent event,
429
const char *name,
430
const char *type,
431
const char *domain,
432
const char *host_name,
433
const AvahiAddress *address,
434
uint16_t port,
435
AvahiStringList *txt,
436
AvahiLookupResultFlags flags,
437
AVAHI_GCC_UNUSED void* userdata) {
438
439
assert(r);
440
441
/* Called whenever a service has been resolved successfully or timed out */
442
443
switch (event) {
444
case AVAHI_RESOLVER_FAILURE:
445
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)));
446
break;
447
448
case AVAHI_RESOLVER_FOUND: {
449
char ip[AVAHI_ADDRESS_STR_MAX];
450
avahi_address_snprint(ip, sizeof(ip), address);
451
int ret = start_mandos_communcation(ip, port);
452
if (ret == 0){
453
exit(EXIT_SUCCESS);
454
} else {
455
exit(EXIT_FAILURE);
456
}
457
}
458
}
459
avahi_s_service_resolver_free(r);
460
}
461
462
static void browse_callback(
463
AvahiSServiceBrowser *b,
464
AvahiIfIndex interface,
465
AvahiProtocol protocol,
466
AvahiBrowserEvent event,
467
const char *name,
468
const char *type,
469
const char *domain,
470
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
471
void* userdata) {
472
473
AvahiServer *s = userdata;
474
assert(b);
475
476
/* Called whenever a new services becomes available on the LAN or is removed from the LAN */
477
478
switch (event) {
479
480
case AVAHI_BROWSER_FAILURE:
481
482
fprintf(stderr, "(Browser) %s\n", avahi_strerror(avahi_server_errno(server)));
483
avahi_simple_poll_quit(simple_poll);
484
return;
485
486
case AVAHI_BROWSER_NEW:
487
/* We ignore the returned resolver object. In the callback
488
function we free it. If the server is terminated before
489
the callback function is called the server will free
490
the resolver for us. */
491
492
if (!(avahi_s_service_resolver_new(s, interface, protocol, name, type, domain, AVAHI_PROTO_INET6, 0, resolve_callback, s)))
493
fprintf(stderr, "Failed to resolve service '%s': %s\n", name, avahi_strerror(avahi_server_errno(s)));
494
495
break;
496
497
case AVAHI_BROWSER_REMOVE:
498
break;
499
500
case AVAHI_BROWSER_ALL_FOR_NOW:
501
case AVAHI_BROWSER_CACHE_EXHAUSTED:
502
break;
503
}
504
}
505
506
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
507
AvahiServerConfig config;
729
508
AvahiSServiceBrowser *sb = NULL;
730
509
int error;
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"};
744
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
};
778
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);
809
}
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
924
if (not debug){
925
avahi_set_log_function(empty_log);
926
}
927
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;
510
int ret = 1;
511
512
avahi_set_log_function(empty_log);
513
514
/* Initialize the psuedo-RNG */
515
srand(time(NULL));
516
517
/* Allocate main loop object */
518
if (!(simple_poll = avahi_simple_poll_new())) {
519
fprintf(stderr, "Failed to create simple poll object.\n");
520
goto fail;
521
}
522
523
/* Do not publish any local records */
524
avahi_server_config_init(&config);
525
config.publish_hinfo = 0;
526
config.publish_addresses = 0;
527
config.publish_workstation = 0;
528
config.publish_domain = 0;
529
530
/* /\* Set a unicast DNS server for wide area DNS-SD *\/ */
531
/* avahi_address_parse("193.11.177.11", AVAHI_PROTO_UNSPEC, &config.wide_area_servers[0]); */
532
/* config.n_wide_area_servers = 1; */
533
/* config.enable_wide_area = 1; */
534
535
/* Allocate a new server */
536
server = avahi_server_new(avahi_simple_poll_get(simple_poll), &config, NULL, NULL, &error);
537
538
/* Free the configuration data */
539
avahi_server_config_free(&config);
540
541
/* Check wether creating the server object succeeded */
542
if (!server) {
543
fprintf(stderr, "Failed to create server: %s\n", avahi_strerror(error));
544
goto fail;
545
}
546
547
/* Create the service browser */
548
if (!(sb = avahi_s_service_browser_new(server, if_nametoindex("eth0"), AVAHI_PROTO_INET6, "_mandos._tcp", NULL, 0, browse_callback, server))) {
549
fprintf(stderr, "Failed to create service browser: %s\n", avahi_strerror(avahi_server_errno(server)));
550
goto fail;
976
551
}
977
552
978
553
/* Run the main loop */
979
980
if (debug){
981
fprintf(stderr, "Starting Avahi loop search\n");
982
}
983
984
avahi_simple_poll_loop(mc.simple_poll);
985
986
end:
987
988
if (debug){
989
fprintf(stderr, "%s exiting\n", argv[0]);
990
}
554
avahi_simple_poll_loop(simple_poll);
555
556
ret = 0;
557
558
fail:
991
559
992
560
/* Cleanup things */
993
if (sb != NULL)
561
if (sb)
994
562
avahi_s_service_browser_free(sb);
995
563
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;
564
if (server)
565
avahi_server_free(server);
566
567
if (simple_poll)
568
avahi_simple_poll_free(simple_poll);
569
570
return ret;
1005
571
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0