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- Committer: Teddy Hogeborn
- Date: 2008-08-27 01:18:25 UTC
- Revision ID: teddy@fukt.bsnet.se-20080827011825-ka3ni6xvy2ehi1y8
* .bzrignore: New.
* clients.conf ([foo]): Remove Radix-64 checksum.
* mandos (AvahiService.rename, server_state_changed,
entry_group_state_changed): Make Avahi log messages more
clear that they are about
Zeroconf.
(fingerprint): Use plain "0" instead of "ctypes.c_uint(0)".
* clients.conf ([foo]): Remove Radix-64 checksum.
* mandos (AvahiService.rename, server_state_changed,
entry_group_state_changed): Make Avahi log messages more
clear that they are about
Zeroconf.
(fingerprint): Use plain "0" instead of "ctypes.c_uint(0)".
- files added:
- .bzrignore
- files removed:
- ca.pem
- files renamed:
- mandos-clients.conf => clients.conf
- server.py => mandos
- plugbasedclient.c => plugin-runner.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
8
8
* includes the following functions: "resolve_callback",
9
9
* "browse_callback", and parts of "main".
10
10
*
11
* Everything else is Copyright © 2007-2008 Teddy Hogeborn and Björn
12
* Påhlsson.
11
* Everything else is
12
* Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
13
13
*
14
14
* This program is free software: you can redistribute it and/or
15
15
* modify it under the terms of the GNU General Public License as
25
25
* along with this program. If not, see
26
26
* <http://www.gnu.org/licenses/>.
27
27
*
28
* Contact the authors at <https://www.fukt.bsnet.se/~belorn/> and
29
* <https://www.fukt.bsnet.se/~teddy/>.
28
* Contact the authors at <mandos@fukt.bsnet.se>.
30
29
*/
31
30
32
#define _FORTIFY_SOURCE 2
33
31
/* Needed by GPGME, specifically gpgme_data_seek() */
34
32
#define _LARGEFILE_SOURCE
35
33
#define _FILE_OFFSET_BITS 64
36
34
37
#include <stdio.h>
38
#include <assert.h>
39
#include <stdlib.h>
40
#include <time.h>
41
#include <net/if.h> /* if_nametoindex */
42
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
36
37
#include <stdio.h> /* fprintf(), stderr, fwrite(),
38
stdout, ferror() */
39
#include <stdint.h> /* uint16_t, uint32_t */
40
#include <stddef.h> /* NULL, size_t, ssize_t */
41
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
42
srand() */
43
#include <stdbool.h> /* bool, true */
44
#include <string.h> /* memset(), strcmp(), strlen(),
45
strerror(), asprintf(), strcpy() */
46
#include <sys/ioctl.h> /* ioctl */
47
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
48
sockaddr_in6, PF_INET6,
49
SOCK_STREAM, INET6_ADDRSTRLEN,
50
uid_t, gid_t */
51
#include <inttypes.h> /* PRIu16 */
52
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
53
struct in6_addr, inet_pton(),
54
connect() */
55
#include <assert.h> /* assert() */
56
#include <errno.h> /* perror(), errno */
57
#include <time.h> /* time() */
58
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
59
SIOCSIFFLAGS, if_indextoname(),
60
if_nametoindex(), IF_NAMESIZE */
61
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
62
getuid(), getgid(), setuid(),
63
setgid() */
64
#include <netinet/in.h>
65
#include <arpa/inet.h> /* inet_pton(), htons */
66
#include <iso646.h> /* not, and */
67
#include <argp.h> /* struct argp_option, error_t, struct
68
argp_state, struct argp,
69
argp_parse(), ARGP_KEY_ARG,
70
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
71
72
/* Avahi */
73
/* All Avahi types, constants and functions
74
Avahi*, avahi_*,
75
AVAHI_* */
43
76
#include <avahi-core/core.h>
44
77
#include <avahi-core/lookup.h>
45
78
#include <avahi-core/log.h>
47
80
#include <avahi-common/malloc.h>
48
81
#include <avahi-common/error.h>
49
82
50
//mandos client part
51
#include <sys/types.h> /* socket(), inet_pton() */
52
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
53
struct in6_addr, inet_pton() */
54
#include <gnutls/gnutls.h> /* All GnuTLS stuff */
55
#include <gnutls/openpgp.h> /* GnuTLS with openpgp stuff */
56
57
#include <unistd.h> /* close() */
58
#include <netinet/in.h>
59
#include <stdbool.h> /* true */
60
#include <string.h> /* memset */
61
#include <arpa/inet.h> /* inet_pton() */
62
#include <iso646.h> /* not */
63
64
// gpgme
65
#include <errno.h> /* perror() */
66
#include <gpgme.h>
67
68
// getopt long
69
#include <getopt.h>
83
/* GnuTLS */
84
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
85
functions:
86
gnutls_*
87
init_gnutls_session(),
88
GNUTLS_* */
89
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
90
GNUTLS_OPENPGP_FMT_BASE64 */
91
92
/* GPGME */
93
#include <gpgme.h> /* All GPGME types, constants and
94
functions:
95
gpgme_*
96
GPGME_PROTOCOL_OpenPGP,
97
GPG_ERR_NO_* */
70
98
71
99
#define BUFFER_SIZE 256
72
#define DH_BITS 1024
73
74
const char *certdir = "/conf/conf.d/cryptkeyreq/";
75
const char *certfile = "openpgp-client.txt";
76
const char *certkey = "openpgp-client-key.txt";
77
100
78
101
bool debug = false;
102
static const char *keydir = "/conf/conf.d/mandos";
103
static const char mandos_protocol_version[] = "1";
104
const char *argp_program_version = "password-request 1.0";
105
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
79
106
107
/* Used for passing in values through the Avahi callback functions */
80
108
typedef struct {
81
gnutls_session_t session;
109
AvahiSimplePoll *simple_poll;
110
AvahiServer *server;
82
111
gnutls_certificate_credentials_t cred;
112
unsigned int dh_bits;
83
113
gnutls_dh_params_t dh_params;
84
} encrypted_session;
85
86
87
ssize_t pgp_packet_decrypt (char *packet, size_t packet_size,
88
char **new_packet, const char *homedir){
114
const char *priority;
115
} mandos_context;
116
117
/*
118
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
119
* "buffer_capacity" is how much is currently allocated,
120
* "buffer_length" is how much is already used.
121
*/
122
size_t adjustbuffer(char **buffer, size_t buffer_length,
123
size_t buffer_capacity){
124
if (buffer_length + BUFFER_SIZE > buffer_capacity){
125
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
126
if (buffer == NULL){
127
return 0;
128
}
129
buffer_capacity += BUFFER_SIZE;
130
}
131
return buffer_capacity;
132
}
133
134
/*
135
* Decrypt OpenPGP data using keyrings in HOMEDIR.
136
* Returns -1 on error
137
*/
138
static ssize_t pgp_packet_decrypt (const char *cryptotext,
139
size_t crypto_size,
140
char **plaintext,
141
const char *homedir){
89
142
gpgme_data_t dh_crypto, dh_plain;
90
143
gpgme_ctx_t ctx;
91
144
gpgme_error_t rc;
92
145
ssize_t ret;
93
ssize_t new_packet_capacity = 0;
94
ssize_t new_packet_length = 0;
146
size_t plaintext_capacity = 0;
147
ssize_t plaintext_length = 0;
95
148
gpgme_engine_info_t engine_info;
96
149
97
150
if (debug){
98
fprintf(stderr, "Trying to decrypt OpenPGP packet\n");
151
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
99
152
}
100
153
101
154
/* Init GPGME */
107
160
return -1;
108
161
}
109
162
110
/* Set GPGME home directory */
163
/* Set GPGME home directory for the OpenPGP engine only */
111
164
rc = gpgme_get_engine_info (&engine_info);
112
165
if (rc != GPG_ERR_NO_ERROR){
113
166
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
123
176
engine_info = engine_info->next;
124
177
}
125
178
if(engine_info == NULL){
126
fprintf(stderr, "Could not set home dir to %s\n", homedir);
179
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
127
180
return -1;
128
181
}
129
182
130
/* Create new GPGME data buffer from packet buffer */
131
rc = gpgme_data_new_from_mem(&dh_crypto, packet, packet_size, 0);
183
/* Create new GPGME data buffer from memory cryptotext */
184
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
185
0);
132
186
if (rc != GPG_ERR_NO_ERROR){
133
187
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
134
188
gpgme_strsource(rc), gpgme_strerror(rc));
140
194
if (rc != GPG_ERR_NO_ERROR){
141
195
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
142
196
gpgme_strsource(rc), gpgme_strerror(rc));
197
gpgme_data_release(dh_crypto);
143
198
return -1;
144
199
}
145
200
148
203
if (rc != GPG_ERR_NO_ERROR){
149
204
fprintf(stderr, "bad gpgme_new: %s: %s\n",
150
205
gpgme_strsource(rc), gpgme_strerror(rc));
151
return -1;
206
plaintext_length = -1;
207
goto decrypt_end;
152
208
}
153
209
154
/* Decrypt data from the FILE pointer to the plaintext data
155
buffer */
210
/* Decrypt data from the cryptotext data buffer to the plaintext
211
data buffer */
156
212
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
157
213
if (rc != GPG_ERR_NO_ERROR){
158
214
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
159
215
gpgme_strsource(rc), gpgme_strerror(rc));
160
return -1;
216
plaintext_length = -1;
217
if (debug){
218
gpgme_decrypt_result_t result;
219
result = gpgme_op_decrypt_result(ctx);
220
if (result == NULL){
221
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
222
} else {
223
fprintf(stderr, "Unsupported algorithm: %s\n",
224
result->unsupported_algorithm);
225
fprintf(stderr, "Wrong key usage: %u\n",
226
result->wrong_key_usage);
227
if(result->file_name != NULL){
228
fprintf(stderr, "File name: %s\n", result->file_name);
229
}
230
gpgme_recipient_t recipient;
231
recipient = result->recipients;
232
if(recipient){
233
while(recipient != NULL){
234
fprintf(stderr, "Public key algorithm: %s\n",
235
gpgme_pubkey_algo_name(recipient->pubkey_algo));
236
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
237
fprintf(stderr, "Secret key available: %s\n",
238
recipient->status == GPG_ERR_NO_SECKEY
239
? "No" : "Yes");
240
recipient = recipient->next;
241
}
242
}
243
}
244
}
245
goto decrypt_end;
161
246
}
162
247
163
248
if(debug){
164
fprintf(stderr, "Decryption of OpenPGP packet succeeded\n");
165
}
166
167
if (debug){
168
gpgme_decrypt_result_t result;
169
result = gpgme_op_decrypt_result(ctx);
170
if (result == NULL){
171
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
172
} else {
173
fprintf(stderr, "Unsupported algorithm: %s\n",
174
result->unsupported_algorithm);
175
fprintf(stderr, "Wrong key usage: %d\n",
176
result->wrong_key_usage);
177
if(result->file_name != NULL){
178
fprintf(stderr, "File name: %s\n", result->file_name);
179
}
180
gpgme_recipient_t recipient;
181
recipient = result->recipients;
182
if(recipient){
183
while(recipient != NULL){
184
fprintf(stderr, "Public key algorithm: %s\n",
185
gpgme_pubkey_algo_name(recipient->pubkey_algo));
186
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
187
fprintf(stderr, "Secret key available: %s\n",
188
recipient->status == GPG_ERR_NO_SECKEY
189
? "No" : "Yes");
190
recipient = recipient->next;
191
}
192
}
193
}
194
}
195
196
/* Delete the GPGME FILE pointer cryptotext data buffer */
197
gpgme_data_release(dh_crypto);
249
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
250
}
198
251
199
252
/* Seek back to the beginning of the GPGME plaintext data buffer */
200
253
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
201
254
perror("pgpme_data_seek");
255
plaintext_length = -1;
256
goto decrypt_end;
202
257
}
203
258
204
*new_packet = 0;
259
*plaintext = NULL;
205
260
while(true){
206
if (new_packet_length + BUFFER_SIZE > new_packet_capacity){
207
*new_packet = realloc(*new_packet,
208
(unsigned int)new_packet_capacity
209
+ BUFFER_SIZE);
210
if (*new_packet == NULL){
211
perror("realloc");
212
return -1;
213
}
214
new_packet_capacity += BUFFER_SIZE;
261
plaintext_capacity = adjustbuffer(plaintext,
262
(size_t)plaintext_length,
263
plaintext_capacity);
264
if (plaintext_capacity == 0){
265
perror("adjustbuffer");
266
plaintext_length = -1;
267
goto decrypt_end;
215
268
}
216
269
217
ret = gpgme_data_read(dh_plain, *new_packet + new_packet_length,
270
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
218
271
BUFFER_SIZE);
219
272
/* Print the data, if any */
220
273
if (ret == 0){
274
/* EOF */
221
275
break;
222
276
}
223
277
if(ret < 0){
224
278
perror("gpgme_data_read");
225
return -1;
279
plaintext_length = -1;
280
goto decrypt_end;
226
281
}
227
new_packet_length += ret;
282
plaintext_length += ret;
228
283
}
229
284
230
/* FIXME: check characters before printing to screen so to not print
231
terminal control characters */
232
/* if(debug){ */
233
/* fprintf(stderr, "decrypted password is: "); */
234
/* fwrite(*new_packet, 1, new_packet_length, stderr); */
235
/* fprintf(stderr, "\n"); */
236
/* } */
285
if(debug){
286
fprintf(stderr, "Decrypted password is: ");
287
for(ssize_t i = 0; i < plaintext_length; i++){
288
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
289
}
290
fprintf(stderr, "\n");
291
}
292
293
decrypt_end:
294
295
/* Delete the GPGME cryptotext data buffer */
296
gpgme_data_release(dh_crypto);
237
297
238
298
/* Delete the GPGME plaintext data buffer */
239
299
gpgme_data_release(dh_plain);
240
return new_packet_length;
300
return plaintext_length;
241
301
}
242
302
243
303
static const char * safer_gnutls_strerror (int value) {
244
const char *ret = gnutls_strerror (value);
304
const char *ret = gnutls_strerror (value); /* Spurious warning */
245
305
if (ret == NULL)
246
306
ret = "(unknown)";
247
307
return ret;
248
308
}
249
309
250
void debuggnutls(__attribute__((unused)) int level,
251
const char* string){
252
fprintf(stderr, "%s", string);
310
/* GnuTLS log function callback */
311
static void debuggnutls(__attribute__((unused)) int level,
312
const char* string){
313
fprintf(stderr, "GnuTLS: %s", string);
253
314
}
254
315
255
int initgnutls(encrypted_session *es){
256
const char *err;
316
static int init_gnutls_global(mandos_context *mc,
317
const char *pubkeyfilename,
318
const char *seckeyfilename){
257
319
int ret;
258
320
259
321
if(debug){
260
322
fprintf(stderr, "Initializing GnuTLS\n");
261
323
}
262
263
if ((ret = gnutls_global_init ())
264
!= GNUTLS_E_SUCCESS) {
265
fprintf (stderr, "global_init: %s\n", safer_gnutls_strerror(ret));
324
325
ret = gnutls_global_init();
326
if (ret != GNUTLS_E_SUCCESS) {
327
fprintf (stderr, "GnuTLS global_init: %s\n",
328
safer_gnutls_strerror(ret));
266
329
return -1;
267
330
}
268
331
269
332
if (debug){
333
/* "Use a log level over 10 to enable all debugging options."
334
* - GnuTLS manual
335
*/
270
336
gnutls_global_set_log_level(11);
271
337
gnutls_global_set_log_function(debuggnutls);
272
338
}
273
339
274
/* openpgp credentials */
275
if ((ret = gnutls_certificate_allocate_credentials (&es->cred))
276
!= GNUTLS_E_SUCCESS) {
277
fprintf (stderr, "memory error: %s\n",
340
/* OpenPGP credentials */
341
gnutls_certificate_allocate_credentials(&mc->cred);
342
if (ret != GNUTLS_E_SUCCESS){
343
fprintf (stderr, "GnuTLS memory error: %s\n", /* Spurious
344
warning */
278
345
safer_gnutls_strerror(ret));
346
gnutls_global_deinit ();
279
347
return -1;
280
348
}
281
349
282
350
if(debug){
283
351
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
284
" and keyfile %s as GnuTLS credentials\n", certfile,
285
certkey);
352
" and keyfile %s as GnuTLS credentials\n", pubkeyfilename,
353
seckeyfilename);
286
354
}
287
355
288
356
ret = gnutls_certificate_set_openpgp_key_file
289
(es->cred, certfile, certkey, GNUTLS_OPENPGP_FMT_BASE64);
357
(mc->cred, pubkeyfilename, seckeyfilename,
358
GNUTLS_OPENPGP_FMT_BASE64);
290
359
if (ret != GNUTLS_E_SUCCESS) {
291
fprintf
292
(stderr, "Error[%d] while reading the OpenPGP key pair ('%s',"
293
" '%s')\n",
294
ret, certfile, certkey);
295
fprintf(stdout, "The Error is: %s\n",
360
fprintf(stderr,
361
"Error[%d] while reading the OpenPGP key pair ('%s',"
362
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
363
fprintf(stdout, "The GnuTLS error is: %s\n",
296
364
safer_gnutls_strerror(ret));
297
return -1;
298
}
299
300
//GnuTLS server initialization
301
if ((ret = gnutls_dh_params_init (&es->dh_params))
302
!= GNUTLS_E_SUCCESS) {
303
fprintf (stderr, "Error in dh parameter initialization: %s\n",
304
safer_gnutls_strerror(ret));
305
return -1;
306
}
307
308
if ((ret = gnutls_dh_params_generate2 (es->dh_params, DH_BITS))
309
!= GNUTLS_E_SUCCESS) {
310
fprintf (stderr, "Error in prime generation: %s\n",
311
safer_gnutls_strerror(ret));
312
return -1;
313
}
314
315
gnutls_certificate_set_dh_params (es->cred, es->dh_params);
316
317
// GnuTLS session creation
318
if ((ret = gnutls_init (&es->session, GNUTLS_SERVER))
319
!= GNUTLS_E_SUCCESS){
365
goto globalfail;
366
}
367
368
/* GnuTLS server initialization */
369
ret = gnutls_dh_params_init(&mc->dh_params);
370
if (ret != GNUTLS_E_SUCCESS) {
371
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
372
" %s\n", safer_gnutls_strerror(ret));
373
goto globalfail;
374
}
375
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
376
if (ret != GNUTLS_E_SUCCESS) {
377
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
378
safer_gnutls_strerror(ret));
379
goto globalfail;
380
}
381
382
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
383
384
return 0;
385
386
globalfail:
387
388
gnutls_certificate_free_credentials(mc->cred);
389
gnutls_global_deinit();
390
return -1;
391
392
}
393
394
static int init_gnutls_session(mandos_context *mc,
395
gnutls_session_t *session){
396
int ret;
397
/* GnuTLS session creation */
398
ret = gnutls_init(session, GNUTLS_SERVER);
399
if (ret != GNUTLS_E_SUCCESS){
320
400
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
321
401
safer_gnutls_strerror(ret));
322
402
}
323
403
324
if ((ret = gnutls_priority_set_direct (es->session, "NORMAL", &err))
325
!= GNUTLS_E_SUCCESS) {
326
fprintf(stderr, "Syntax error at: %s\n", err);
327
fprintf(stderr, "GnuTLS error: %s\n",
328
safer_gnutls_strerror(ret));
329
return -1;
404
{
405
const char *err;
406
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
407
if (ret != GNUTLS_E_SUCCESS) {
408
fprintf(stderr, "Syntax error at: %s\n", err);
409
fprintf(stderr, "GnuTLS error: %s\n",
410
safer_gnutls_strerror(ret));
411
gnutls_deinit (*session);
412
return -1;
413
}
330
414
}
331
415
332
if ((ret = gnutls_credentials_set
333
(es->session, GNUTLS_CRD_CERTIFICATE, es->cred))
334
!= GNUTLS_E_SUCCESS) {
335
fprintf(stderr, "Error setting a credentials set: %s\n",
416
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
417
mc->cred);
418
if (ret != GNUTLS_E_SUCCESS) {
419
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
336
420
safer_gnutls_strerror(ret));
421
gnutls_deinit (*session);
337
422
return -1;
338
423
}
339
424
340
425
/* ignore client certificate if any. */
341
gnutls_certificate_server_set_request (es->session,
426
gnutls_certificate_server_set_request (*session,
342
427
GNUTLS_CERT_IGNORE);
343
428
344
gnutls_dh_set_prime_bits (es->session, DH_BITS);
429
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
345
430
346
431
return 0;
347
432
}
348
433
349
void empty_log(__attribute__((unused)) AvahiLogLevel level,
350
__attribute__((unused)) const char *txt){}
434
/* Avahi log function callback */
435
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
436
__attribute__((unused)) const char *txt){}
351
437
352
int start_mandos_communication(const char *ip, uint16_t port,
353
unsigned int if_index){
438
/* Called when a Mandos server is found */
439
static int start_mandos_communication(const char *ip, uint16_t port,
440
AvahiIfIndex if_index,
441
mandos_context *mc){
354
442
int ret, tcp_sd;
355
struct sockaddr_in6 to;
356
encrypted_session es;
443
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
357
444
char *buffer = NULL;
358
445
char *decrypted_buffer;
359
446
size_t buffer_length = 0;
360
447
size_t buffer_capacity = 0;
361
448
ssize_t decrypted_buffer_size;
362
size_t written = 0;
449
size_t written;
363
450
int retval = 0;
364
451
char interface[IF_NAMESIZE];
452
gnutls_session_t session;
453
454
ret = init_gnutls_session (mc, &session);
455
if (ret != 0){
456
return -1;
457
}
365
458
366
459
if(debug){
367
fprintf(stderr, "Setting up a tcp connection to %s\n", ip);
460
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
461
"\n", ip, port);
368
462
}
369
463
370
464
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
372
466
perror("socket");
373
467
return -1;
374
468
}
375
376
if(if_indextoname(if_index, interface) == NULL){
377
if(debug){
469
470
if(debug){
471
if(if_indextoname((unsigned int)if_index, interface) == NULL){
378
472
perror("if_indextoname");
473
return -1;
379
474
}
380
return -1;
381
}
382
383
if(debug){
384
475
fprintf(stderr, "Binding to interface %s\n", interface);
385
476
}
386
477
387
memset(&to,0,sizeof(to)); /* Spurious warning */
388
to.sin6_family = AF_INET6;
389
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
478
memset(&to, 0, sizeof(to));
479
to.in6.sin6_family = AF_INET6;
480
/* It would be nice to have a way to detect if we were passed an
481
IPv4 address here. Now we assume an IPv6 address. */
482
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
390
483
if (ret < 0 ){
391
484
perror("inet_pton");
392
485
return -1;
393
}
486
}
394
487
if(ret == 0){
395
488
fprintf(stderr, "Bad address: %s\n", ip);
396
489
return -1;
397
490
}
398
to.sin6_port = htons(port); /* Spurious warning */
491
to.in6.sin6_port = htons(port); /* Spurious warning */
399
492
400
to.sin6_scope_id = (uint32_t)if_index;
493
to.in6.sin6_scope_id = (uint32_t)if_index;
401
494
402
495
if(debug){
403
fprintf(stderr, "Connection to: %s\n", ip);
496
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
497
port);
498
char addrstr[INET6_ADDRSTRLEN] = "";
499
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
500
sizeof(addrstr)) == NULL){
501
perror("inet_ntop");
502
} else {
503
if(strcmp(addrstr, ip) != 0){
504
fprintf(stderr, "Canonical address form: %s\n", addrstr);
505
}
506
}
404
507
}
405
508
406
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
509
ret = connect(tcp_sd, &to.in, sizeof(to));
407
510
if (ret < 0){
408
511
perror("connect");
409
512
return -1;
410
513
}
411
412
ret = initgnutls (&es);
413
if (ret != 0){
414
retval = -1;
415
return -1;
514
515
const char *out = mandos_protocol_version;
516
written = 0;
517
while (true){
518
size_t out_size = strlen(out);
519
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
520
out_size - written));
521
if (ret == -1){
522
perror("write");
523
retval = -1;
524
goto mandos_end;
525
}
526
written += (size_t)ret;
527
if(written < out_size){
528
continue;
529
} else {
530
if (out == mandos_protocol_version){
531
written = 0;
532
out = "\r\n";
533
} else {
534
break;
535
}
536
}
416
537
}
417
418
gnutls_transport_set_ptr (es.session,
419
(gnutls_transport_ptr_t) tcp_sd);
420
538
421
539
if(debug){
422
540
fprintf(stderr, "Establishing TLS session with %s\n", ip);
423
541
}
424
542
425
ret = gnutls_handshake (es.session);
543
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
544
545
do{
546
ret = gnutls_handshake (session);
547
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
426
548
427
549
if (ret != GNUTLS_E_SUCCESS){
428
550
if(debug){
429
fprintf(stderr, "\n*** Handshake failed ***\n");
551
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
430
552
gnutls_perror (ret);
431
553
}
432
554
retval = -1;
433
goto exit;
555
goto mandos_end;
434
556
}
435
557
436
//Retrieve OpenPGP packet that contains the wanted password
558
/* Read OpenPGP packet that contains the wanted password */
437
559
438
560
if(debug){
439
561
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
441
563
}
442
564
443
565
while(true){
444
if (buffer_length + BUFFER_SIZE > buffer_capacity){
445
buffer = realloc(buffer, buffer_capacity + BUFFER_SIZE);
446
if (buffer == NULL){
447
perror("realloc");
448
goto exit;
449
}
450
buffer_capacity += BUFFER_SIZE;
566
buffer_capacity = adjustbuffer(&buffer, buffer_length,
567
buffer_capacity);
568
if (buffer_capacity == 0){
569
perror("adjustbuffer");
570
retval = -1;
571
goto mandos_end;
451
572
}
452
573
453
ret = gnutls_record_recv
454
(es.session, buffer+buffer_length, BUFFER_SIZE);
574
ret = gnutls_record_recv(session, buffer+buffer_length,
575
BUFFER_SIZE);
455
576
if (ret == 0){
456
577
break;
457
578
}
461
582
case GNUTLS_E_AGAIN:
462
583
break;
463
584
case GNUTLS_E_REHANDSHAKE:
464
ret = gnutls_handshake (es.session);
585
do{
586
ret = gnutls_handshake (session);
587
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
465
588
if (ret < 0){
466
fprintf(stderr, "\n*** Handshake failed ***\n");
589
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
467
590
gnutls_perror (ret);
468
591
retval = -1;
469
goto exit;
592
goto mandos_end;
470
593
}
471
594
break;
472
595
default:
473
596
fprintf(stderr, "Unknown error while reading data from"
474
" encrypted session with mandos server\n");
597
" encrypted session with Mandos server\n");
475
598
retval = -1;
476
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
477
goto exit;
599
gnutls_bye (session, GNUTLS_SHUT_RDWR);
600
goto mandos_end;
478
601
}
479
602
} else {
480
603
buffer_length += (size_t) ret;
481
604
}
482
605
}
483
606
607
if(debug){
608
fprintf(stderr, "Closing TLS session\n");
609
}
610
611
gnutls_bye (session, GNUTLS_SHUT_RDWR);
612
484
613
if (buffer_length > 0){
485
614
decrypted_buffer_size = pgp_packet_decrypt(buffer,
486
615
buffer_length,
487
616
&decrypted_buffer,
488
certdir);
617
keydir);
489
618
if (decrypted_buffer_size >= 0){
490
while(written < decrypted_buffer_size){
619
written = 0;
620
while(written < (size_t) decrypted_buffer_size){
491
621
ret = (int)fwrite (decrypted_buffer + written, 1,
492
622
(size_t)decrypted_buffer_size - written,
493
623
stdout);
505
635
} else {
506
636
retval = -1;
507
637
}
508
}
509
510
//shutdown procedure
511
512
if(debug){
513
fprintf(stderr, "Closing TLS session\n");
514
}
515
638
} else {
639
retval = -1;
640
}
641
642
/* Shutdown procedure */
643
644
mandos_end:
516
645
free(buffer);
517
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
518
exit:
519
646
close(tcp_sd);
520
gnutls_deinit (es.session);
521
gnutls_certificate_free_credentials (es.cred);
522
gnutls_global_deinit ();
647
gnutls_deinit (session);
523
648
return retval;
524
649
}
525
650
526
static AvahiSimplePoll *simple_poll = NULL;
527
static AvahiServer *server = NULL;
528
529
static void resolve_callback(
530
AvahiSServiceResolver *r,
531
AvahiIfIndex interface,
532
AVAHI_GCC_UNUSED AvahiProtocol protocol,
533
AvahiResolverEvent event,
534
const char *name,
535
const char *type,
536
const char *domain,
537
const char *host_name,
538
const AvahiAddress *address,
539
uint16_t port,
540
AVAHI_GCC_UNUSED AvahiStringList *txt,
541
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
542
AVAHI_GCC_UNUSED void* userdata) {
543
544
assert(r); /* Spurious warning */
651
static void resolve_callback(AvahiSServiceResolver *r,
652
AvahiIfIndex interface,
653
AVAHI_GCC_UNUSED AvahiProtocol protocol,
654
AvahiResolverEvent event,
655
const char *name,
656
const char *type,
657
const char *domain,
658
const char *host_name,
659
const AvahiAddress *address,
660
uint16_t port,
661
AVAHI_GCC_UNUSED AvahiStringList *txt,
662
AVAHI_GCC_UNUSED AvahiLookupResultFlags
663
flags,
664
void* userdata) {
665
mandos_context *mc = userdata;
666
assert(r);
545
667
546
668
/* Called whenever a service has been resolved successfully or
547
669
timed out */
549
671
switch (event) {
550
672
default:
551
673
case AVAHI_RESOLVER_FAILURE:
552
fprintf(stderr, "(Resolver) Failed to resolve service '%s' of"
553
" type '%s' in domain '%s': %s\n", name, type, domain,
554
avahi_strerror(avahi_server_errno(server)));
674
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
675
" of type '%s' in domain '%s': %s\n", name, type, domain,
676
avahi_strerror(avahi_server_errno(mc->server)));
555
677
break;
556
678
557
679
case AVAHI_RESOLVER_FOUND:
559
681
char ip[AVAHI_ADDRESS_STR_MAX];
560
682
avahi_address_snprint(ip, sizeof(ip), address);
561
683
if(debug){
562
fprintf(stderr, "Mandos server \"%s\" found on %s (%s) on"
563
" port %d\n", name, host_name, ip, port);
684
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
685
PRIu16 ") on port %d\n", name, host_name, ip,
686
interface, port);
564
687
}
565
int ret = start_mandos_communication(ip, port,
566
(unsigned int) interface);
688
int ret = start_mandos_communication(ip, port, interface, mc);
567
689
if (ret == 0){
568
exit(EXIT_SUCCESS);
690
avahi_simple_poll_quit(mc->simple_poll);
569
691
}
570
692
}
571
693
}
572
694
avahi_s_service_resolver_free(r);
573
695
}
574
696
575
static void browse_callback(
576
AvahiSServiceBrowser *b,
577
AvahiIfIndex interface,
578
AvahiProtocol protocol,
579
AvahiBrowserEvent event,
580
const char *name,
581
const char *type,
582
const char *domain,
583
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
584
void* userdata) {
585
586
AvahiServer *s = userdata;
587
assert(b); /* Spurious warning */
588
589
/* Called whenever a new services becomes available on the LAN or
590
is removed from the LAN */
591
592
switch (event) {
593
default:
594
case AVAHI_BROWSER_FAILURE:
595
596
fprintf(stderr, "(Browser) %s\n",
597
avahi_strerror(avahi_server_errno(server)));
598
avahi_simple_poll_quit(simple_poll);
599
return;
600
601
case AVAHI_BROWSER_NEW:
602
/* We ignore the returned resolver object. In the callback
603
function we free it. If the server is terminated before
604
the callback function is called the server will free
605
the resolver for us. */
606
607
if (!(avahi_s_service_resolver_new(s, interface, protocol, name,
608
type, domain,
609
AVAHI_PROTO_INET6, 0,
610
resolve_callback, s)))
611
fprintf(stderr, "Failed to resolve service '%s': %s\n", name,
612
avahi_strerror(avahi_server_errno(s)));
613
break;
614
615
case AVAHI_BROWSER_REMOVE:
616
break;
617
618
case AVAHI_BROWSER_ALL_FOR_NOW:
619
case AVAHI_BROWSER_CACHE_EXHAUSTED:
620
break;
697
static void browse_callback( AvahiSServiceBrowser *b,
698
AvahiIfIndex interface,
699
AvahiProtocol protocol,
700
AvahiBrowserEvent event,
701
const char *name,
702
const char *type,
703
const char *domain,
704
AVAHI_GCC_UNUSED AvahiLookupResultFlags
705
flags,
706
void* userdata) {
707
mandos_context *mc = userdata;
708
assert(b);
709
710
/* Called whenever a new services becomes available on the LAN or
711
is removed from the LAN */
712
713
switch (event) {
714
default:
715
case AVAHI_BROWSER_FAILURE:
716
717
fprintf(stderr, "(Avahi browser) %s\n",
718
avahi_strerror(avahi_server_errno(mc->server)));
719
avahi_simple_poll_quit(mc->simple_poll);
720
return;
721
722
case AVAHI_BROWSER_NEW:
723
/* We ignore the returned Avahi resolver object. In the callback
724
function we free it. If the Avahi server is terminated before
725
the callback function is called the Avahi server will free the
726
resolver for us. */
727
728
if (!(avahi_s_service_resolver_new(mc->server, interface,
729
protocol, name, type, domain,
730
AVAHI_PROTO_INET6, 0,
731
resolve_callback, mc)))
732
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
733
name, avahi_strerror(avahi_server_errno(mc->server)));
734
break;
735
736
case AVAHI_BROWSER_REMOVE:
737
break;
738
739
case AVAHI_BROWSER_ALL_FOR_NOW:
740
case AVAHI_BROWSER_CACHE_EXHAUSTED:
741
if(debug){
742
fprintf(stderr, "No Mandos server found, still searching...\n");
621
743
}
744
break;
745
}
622
746
}
623
747
624
/* combinds file name and path and returns the malloced new string. som sane checks could/should be added */
625
const char *combinepath(const char *first, const char *second){
748
/* Combines file name and path and returns the malloced new
749
string. some sane checks could/should be added */
750
static char *combinepath(const char *first, const char *second){
626
751
char *tmp;
627
tmp = malloc(strlen(first) + strlen(second) + 2);
628
if (tmp == NULL){
629
perror("malloc");
752
int ret = asprintf(&tmp, "%s/%s", first, second);
753
if(ret < 0){
630
754
return NULL;
631
755
}
632
strcpy(tmp, first);
633
if (first[0] != '\0' and first[strlen(first) - 1] != '/'){
634
strcat(tmp, "/");
635
}
636
strcat(tmp, second);
637
756
return tmp;
638
757
}
639
758
640
759
641
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
642
AvahiServerConfig config;
760
int main(int argc, char *argv[]){
643
761
AvahiSServiceBrowser *sb = NULL;
644
762
int error;
645
763
int ret;
646
int returncode = EXIT_SUCCESS;
764
int exitcode = EXIT_SUCCESS;
647
765
const char *interface = "eth0";
648
649
while (true){
650
static struct option long_options[] = {
651
{"debug", no_argument, (int *)&debug, 1},
652
{"interface", required_argument, 0, 'i'},
653
{"certdir", required_argument, 0, 'd'},
654
{"certkey", required_argument, 0, 'c'},
655
{"certfile", required_argument, 0, 'k'},
656
{0, 0, 0, 0} };
657
658
int option_index = 0;
659
ret = getopt_long (argc, argv, "i:", long_options,
660
&option_index);
661
662
if (ret == -1){
663
break;
664
}
665
666
switch(ret){
667
case 0:
668
break;
669
case 'i':
670
interface = optarg;
671
break;
672
case 'd':
673
certdir = optarg;
674
break;
675
case 'c':
676
certfile = optarg;
677
break;
678
case 'k':
679
certkey = optarg;
680
break;
681
default:
682
exit(EXIT_FAILURE);
683
}
684
}
685
686
certfile = combinepath(certdir, certfile);
687
if (certfile == NULL){
688
goto exit;
689
}
690
691
certkey = combinepath(certdir, certkey);
692
if (certkey == NULL){
693
goto exit;
694
}
695
766
struct ifreq network;
767
int sd;
768
uid_t uid;
769
gid_t gid;
770
char *connect_to = NULL;
771
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
772
char *pubkeyfilename = NULL;
773
char *seckeyfilename = NULL;
774
const char *pubkeyname = "pubkey.txt";
775
const char *seckeyname = "seckey.txt";
776
mandos_context mc = { .simple_poll = NULL, .server = NULL,
777
.dh_bits = 1024, .priority = "SECURE256"};
778
bool gnutls_initalized = false;
779
780
{
781
struct argp_option options[] = {
782
{ .name = "debug", .key = 128,
783
.doc = "Debug mode", .group = 3 },
784
{ .name = "connect", .key = 'c',
785
.arg = "IP",
786
.doc = "Connect directly to a sepcified mandos server",
787
.group = 1 },
788
{ .name = "interface", .key = 'i',
789
.arg = "INTERFACE",
790
.doc = "Interface that Avahi will conntect through",
791
.group = 1 },
792
{ .name = "keydir", .key = 'd',
793
.arg = "KEYDIR",
794
.doc = "Directory where the openpgp keyring is",
795
.group = 1 },
796
{ .name = "seckey", .key = 's',
797
.arg = "SECKEY",
798
.doc = "Secret openpgp key for gnutls authentication",
799
.group = 1 },
800
{ .name = "pubkey", .key = 'p',
801
.arg = "PUBKEY",
802
.doc = "Public openpgp key for gnutls authentication",
803
.group = 2 },
804
{ .name = "dh-bits", .key = 129,
805
.arg = "BITS",
806
.doc = "dh-bits to use in gnutls communication",
807
.group = 2 },
808
{ .name = "priority", .key = 130,
809
.arg = "PRIORITY",
810
.doc = "GNUTLS priority", .group = 1 },
811
{ .name = NULL }
812
};
813
814
815
error_t parse_opt (int key, char *arg,
816
struct argp_state *state) {
817
/* Get the INPUT argument from `argp_parse', which we know is
818
a pointer to our plugin list pointer. */
819
switch (key) {
820
case 128:
821
debug = true;
822
break;
823
case 'c':
824
connect_to = arg;
825
break;
826
case 'i':
827
interface = arg;
828
break;
829
case 'd':
830
keydir = arg;
831
break;
832
case 's':
833
seckeyname = arg;
834
break;
835
case 'p':
836
pubkeyname = arg;
837
break;
838
case 129:
839
errno = 0;
840
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
841
if (errno){
842
perror("strtol");
843
exit(EXIT_FAILURE);
844
}
845
break;
846
case 130:
847
mc.priority = arg;
848
break;
849
case ARGP_KEY_ARG:
850
argp_usage (state);
851
case ARGP_KEY_END:
852
break;
853
default:
854
return ARGP_ERR_UNKNOWN;
855
}
856
return 0;
857
}
858
859
struct argp argp = { .options = options, .parser = parse_opt,
860
.args_doc = "",
861
.doc = "Mandos client -- Get and decrypt"
862
" passwords from mandos server" };
863
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
864
if (ret == ARGP_ERR_UNKNOWN){
865
fprintf(stderr, "Unknown error while parsing arguments\n");
866
exitcode = EXIT_FAILURE;
867
goto end;
868
}
869
}
870
871
pubkeyfilename = combinepath(keydir, pubkeyname);
872
if (pubkeyfilename == NULL){
873
perror("combinepath");
874
exitcode = EXIT_FAILURE;
875
goto end;
876
}
877
878
seckeyfilename = combinepath(keydir, seckeyname);
879
if (seckeyfilename == NULL){
880
perror("combinepath");
881
exitcode = EXIT_FAILURE;
882
goto end;
883
}
884
885
ret = init_gnutls_global(&mc, pubkeyfilename, seckeyfilename);
886
if (ret == -1){
887
fprintf(stderr, "init_gnutls_global failed\n");
888
exitcode = EXIT_FAILURE;
889
goto end;
890
} else {
891
gnutls_initalized = true;
892
}
893
894
/* If the interface is down, bring it up */
895
{
896
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
897
if(sd < 0) {
898
perror("socket");
899
exitcode = EXIT_FAILURE;
900
goto end;
901
}
902
strcpy(network.ifr_name, interface);
903
ret = ioctl(sd, SIOCGIFFLAGS, &network);
904
if(ret == -1){
905
perror("ioctl SIOCGIFFLAGS");
906
exitcode = EXIT_FAILURE;
907
goto end;
908
}
909
if((network.ifr_flags & IFF_UP) == 0){
910
network.ifr_flags |= IFF_UP;
911
ret = ioctl(sd, SIOCSIFFLAGS, &network);
912
if(ret == -1){
913
perror("ioctl SIOCSIFFLAGS");
914
exitcode = EXIT_FAILURE;
915
goto end;
916
}
917
}
918
close(sd);
919
}
920
921
uid = getuid();
922
gid = getgid();
923
924
ret = setuid(uid);
925
if (ret == -1){
926
perror("setuid");
927
}
928
929
setgid(gid);
930
if (ret == -1){
931
perror("setgid");
932
}
933
934
if_index = (AvahiIfIndex) if_nametoindex(interface);
935
if(if_index == 0){
936
fprintf(stderr, "No such interface: \"%s\"\n", interface);
937
exit(EXIT_FAILURE);
938
}
939
940
if(connect_to != NULL){
941
/* Connect directly, do not use Zeroconf */
942
/* (Mainly meant for debugging) */
943
char *address = strrchr(connect_to, ':');
944
if(address == NULL){
945
fprintf(stderr, "No colon in address\n");
946
exitcode = EXIT_FAILURE;
947
goto end;
948
}
949
errno = 0;
950
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
951
if(errno){
952
perror("Bad port number");
953
exitcode = EXIT_FAILURE;
954
goto end;
955
}
956
*address = '\0';
957
address = connect_to;
958
ret = start_mandos_communication(address, port, if_index, &mc);
959
if(ret < 0){
960
exitcode = EXIT_FAILURE;
961
} else {
962
exitcode = EXIT_SUCCESS;
963
}
964
goto end;
965
}
966
696
967
if (not debug){
697
968
avahi_set_log_function(empty_log);
698
969
}
699
970
700
/* Initialize the psuedo-RNG */
971
/* Initialize the pseudo-RNG for Avahi */
701
972
srand((unsigned int) time(NULL));
702
703
/* Allocate main loop object */
704
if (!(simple_poll = avahi_simple_poll_new())) {
705
fprintf(stderr, "Failed to create simple poll object.\n");
706
707
goto exit;
708
}
709
710
/* Do not publish any local records */
711
avahi_server_config_init(&config);
712
config.publish_hinfo = 0;
713
config.publish_addresses = 0;
714
config.publish_workstation = 0;
715
config.publish_domain = 0;
716
717
/* Allocate a new server */
718
server = avahi_server_new(avahi_simple_poll_get(simple_poll),
719
&config, NULL, NULL, &error);
720
721
/* Free the configuration data */
722
avahi_server_config_free(&config);
723
724
/* Check if creating the server object succeeded */
725
if (!server) {
726
fprintf(stderr, "Failed to create server: %s\n",
973
974
/* Allocate main Avahi loop object */
975
mc.simple_poll = avahi_simple_poll_new();
976
if (mc.simple_poll == NULL) {
977
fprintf(stderr, "Avahi: Failed to create simple poll"
978
" object.\n");
979
exitcode = EXIT_FAILURE;
980
goto end;
981
}
982
983
{
984
AvahiServerConfig config;
985
/* Do not publish any local Zeroconf records */
986
avahi_server_config_init(&config);
987
config.publish_hinfo = 0;
988
config.publish_addresses = 0;
989
config.publish_workstation = 0;
990
config.publish_domain = 0;
991
992
/* Allocate a new server */
993
mc.server = avahi_server_new(avahi_simple_poll_get
994
(mc.simple_poll), &config, NULL,
995
NULL, &error);
996
997
/* Free the Avahi configuration data */
998
avahi_server_config_free(&config);
999
}
1000
1001
/* Check if creating the Avahi server object succeeded */
1002
if (mc.server == NULL) {
1003
fprintf(stderr, "Failed to create Avahi server: %s\n",
727
1004
avahi_strerror(error));
728
returncode = EXIT_FAILURE;
729
goto exit;
1005
exitcode = EXIT_FAILURE;
1006
goto end;
730
1007
}
731
1008
732
/* Create the service browser */
733
sb = avahi_s_service_browser_new(server,
734
(AvahiIfIndex)
735
if_nametoindex(interface),
1009
/* Create the Avahi service browser */
1010
sb = avahi_s_service_browser_new(mc.server, if_index,
736
1011
AVAHI_PROTO_INET6,
737
1012
"_mandos._tcp", NULL, 0,
738
browse_callback, server);
739
if (!sb) {
1013
browse_callback, &mc);
1014
if (sb == NULL) {
740
1015
fprintf(stderr, "Failed to create service browser: %s\n",
741
avahi_strerror(avahi_server_errno(server)));
742
returncode = EXIT_FAILURE;
743
goto exit;
1016
avahi_strerror(avahi_server_errno(mc.server)));
1017
exitcode = EXIT_FAILURE;
1018
goto end;
744
1019
}
745
1020
746
1021
/* Run the main loop */
747
1022
748
1023
if (debug){
749
fprintf(stderr, "Starting avahi loop search\n");
1024
fprintf(stderr, "Starting Avahi loop search\n");
750
1025
}
751
1026
752
avahi_simple_poll_loop(simple_poll);
1027
avahi_simple_poll_loop(mc.simple_poll);
753
1028
754
exit:
1029
end:
755
1030
756
1031
if (debug){
757
1032
fprintf(stderr, "%s exiting\n", argv[0]);
758
1033
}
759
1034
760
1035
/* Cleanup things */
761
if (sb)
1036
if (sb != NULL)
762
1037
avahi_s_service_browser_free(sb);
763
1038
764
if (server)
765
avahi_server_free(server);
766
767
if (simple_poll)
768
avahi_simple_poll_free(simple_poll);
769
free(certfile);
770
free(certkey);
1039
if (mc.server != NULL)
1040
avahi_server_free(mc.server);
1041
1042
if (mc.simple_poll != NULL)
1043
avahi_simple_poll_free(mc.simple_poll);
1044
free(pubkeyfilename);
1045
free(seckeyfilename);
1046
1047
if (gnutls_initalized){
1048
gnutls_certificate_free_credentials(mc.cred);
1049
gnutls_global_deinit ();
1050
}
771
1051
772
return returncode;
1052
return exitcode;
773
1053
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0