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- Committer: Teddy Hogeborn
- Date: 2008-08-01 07:04:32 UTC
- Revision ID: teddy@fukt.bsnet.se-20080801070432-5t1q0ds0bjxojyoz
* plugins.d/plugbasedclient.c (main): Close the pipe fd after dup2:ing
it onto stdout.
it onto stdout.
- files added:
- ca.pem
- files removed:
- .bzrignore
- files renamed:
- plugin-runner.c => plugbasedclient.c
- plugins.d/password-request.c => plugins.d/mandosclient.c
- plugins.d/password-prompt.c => plugins.d/passprompt.c
- mandos.conf => server.conf
- mandos => server.py
- files modified:
- Makefile
added
removed
plugins.d/mandosclient.c
32
32
#define _LARGEFILE_SOURCE
33
33
#define _FILE_OFFSET_BITS 64
34
34
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_* */
35
#include <stdio.h>
36
#include <assert.h>
37
#include <stdlib.h>
38
#include <time.h>
39
#include <net/if.h> /* if_nametoindex */
40
76
41
#include <avahi-core/core.h>
77
42
#include <avahi-core/lookup.h>
78
43
#include <avahi-core/log.h>
80
45
#include <avahi-common/malloc.h>
81
46
#include <avahi-common/error.h>
82
47
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_* */
48
//mandos client part
49
#include <sys/types.h> /* socket(), inet_pton() */
50
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
51
struct in6_addr, inet_pton() */
52
#include <gnutls/gnutls.h> /* All GnuTLS stuff */
53
#include <gnutls/openpgp.h> /* GnuTLS with openpgp stuff */
54
55
#include <unistd.h> /* close() */
56
#include <netinet/in.h>
57
#include <stdbool.h> /* true */
58
#include <string.h> /* memset */
59
#include <arpa/inet.h> /* inet_pton() */
60
#include <iso646.h> /* not */
61
62
// gpgme
63
#include <errno.h> /* perror() */
64
#include <gpgme.h>
65
66
// getopt long
67
#include <getopt.h>
98
68
99
69
#define BUFFER_SIZE 256
70
#define DH_BITS 1024
71
72
const char *certdir = "/conf/conf.d/cryptkeyreq/";
73
const char *certfile = "openpgp-client.txt";
74
const char *certkey = "openpgp-client-key.txt";
100
75
101
76
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>";
106
77
107
/* Used for passing in values through the Avahi callback functions */
108
78
typedef struct {
109
AvahiSimplePoll *simple_poll;
110
AvahiServer *server;
79
gnutls_session_t session;
111
80
gnutls_certificate_credentials_t cred;
112
unsigned int dh_bits;
113
81
gnutls_dh_params_t dh_params;
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){
82
} encrypted_session;
83
84
85
ssize_t pgp_packet_decrypt (char *packet, size_t packet_size,
86
char **new_packet, const char *homedir){
142
87
gpgme_data_t dh_crypto, dh_plain;
143
88
gpgme_ctx_t ctx;
144
89
gpgme_error_t rc;
145
90
ssize_t ret;
146
size_t plaintext_capacity = 0;
147
ssize_t plaintext_length = 0;
91
ssize_t new_packet_capacity = 0;
92
ssize_t new_packet_length = 0;
148
93
gpgme_engine_info_t engine_info;
149
94
150
95
if (debug){
151
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
96
fprintf(stderr, "Trying to decrypt OpenPGP packet\n");
152
97
}
153
98
154
99
/* Init GPGME */
160
105
return -1;
161
106
}
162
107
163
/* Set GPGME home directory for the OpenPGP engine only */
108
/* Set GPGME home directory */
164
109
rc = gpgme_get_engine_info (&engine_info);
165
110
if (rc != GPG_ERR_NO_ERROR){
166
111
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
176
121
engine_info = engine_info->next;
177
122
}
178
123
if(engine_info == NULL){
179
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
124
fprintf(stderr, "Could not set home dir to %s\n", homedir);
180
125
return -1;
181
126
}
182
127
183
/* Create new GPGME data buffer from memory cryptotext */
184
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
185
0);
128
/* Create new GPGME data buffer from packet buffer */
129
rc = gpgme_data_new_from_mem(&dh_crypto, packet, packet_size, 0);
186
130
if (rc != GPG_ERR_NO_ERROR){
187
131
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
188
132
gpgme_strsource(rc), gpgme_strerror(rc));
194
138
if (rc != GPG_ERR_NO_ERROR){
195
139
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
196
140
gpgme_strsource(rc), gpgme_strerror(rc));
197
gpgme_data_release(dh_crypto);
198
141
return -1;
199
142
}
200
143
203
146
if (rc != GPG_ERR_NO_ERROR){
204
147
fprintf(stderr, "bad gpgme_new: %s: %s\n",
205
148
gpgme_strsource(rc), gpgme_strerror(rc));
206
plaintext_length = -1;
207
goto decrypt_end;
149
return -1;
208
150
}
209
151
210
/* Decrypt data from the cryptotext data buffer to the plaintext
211
data buffer */
152
/* Decrypt data from the FILE pointer to the plaintext data
153
buffer */
212
154
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
213
155
if (rc != GPG_ERR_NO_ERROR){
214
156
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
215
157
gpgme_strsource(rc), gpgme_strerror(rc));
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
}
158
return -1;
159
}
160
161
if(debug){
162
fprintf(stderr, "Decryption of OpenPGP packet succeeded\n");
163
}
164
165
if (debug){
166
gpgme_decrypt_result_t result;
167
result = gpgme_op_decrypt_result(ctx);
168
if (result == NULL){
169
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
170
} else {
171
fprintf(stderr, "Unsupported algorithm: %s\n",
172
result->unsupported_algorithm);
173
fprintf(stderr, "Wrong key usage: %d\n",
174
result->wrong_key_usage);
175
if(result->file_name != NULL){
176
fprintf(stderr, "File name: %s\n", result->file_name);
177
}
178
gpgme_recipient_t recipient;
179
recipient = result->recipients;
180
if(recipient){
181
while(recipient != NULL){
182
fprintf(stderr, "Public key algorithm: %s\n",
183
gpgme_pubkey_algo_name(recipient->pubkey_algo));
184
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
185
fprintf(stderr, "Secret key available: %s\n",
186
recipient->status == GPG_ERR_NO_SECKEY
187
? "No" : "Yes");
188
recipient = recipient->next;
242
189
}
243
190
}
244
191
}
245
goto decrypt_end;
246
192
}
247
193
248
if(debug){
249
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
250
}
194
/* Delete the GPGME FILE pointer cryptotext data buffer */
195
gpgme_data_release(dh_crypto);
251
196
252
197
/* Seek back to the beginning of the GPGME plaintext data buffer */
253
198
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
254
199
perror("pgpme_data_seek");
255
plaintext_length = -1;
256
goto decrypt_end;
257
200
}
258
201
259
*plaintext = NULL;
202
*new_packet = 0;
260
203
while(true){
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;
204
if (new_packet_length + BUFFER_SIZE > new_packet_capacity){
205
*new_packet = realloc(*new_packet,
206
(unsigned int)new_packet_capacity
207
+ BUFFER_SIZE);
208
if (*new_packet == NULL){
209
perror("realloc");
210
return -1;
211
}
212
new_packet_capacity += BUFFER_SIZE;
268
213
}
269
214
270
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
215
ret = gpgme_data_read(dh_plain, *new_packet + new_packet_length,
271
216
BUFFER_SIZE);
272
217
/* Print the data, if any */
273
218
if (ret == 0){
274
/* EOF */
275
219
break;
276
220
}
277
221
if(ret < 0){
278
222
perror("gpgme_data_read");
279
plaintext_length = -1;
280
goto decrypt_end;
281
}
282
plaintext_length += ret;
283
}
284
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);
223
return -1;
224
}
225
new_packet_length += ret;
226
}
227
228
/* FIXME: check characters before printing to screen so to not print
229
terminal control characters */
230
/* if(debug){ */
231
/* fprintf(stderr, "decrypted password is: "); */
232
/* fwrite(*new_packet, 1, new_packet_length, stderr); */
233
/* fprintf(stderr, "\n"); */
234
/* } */
297
235
298
236
/* Delete the GPGME plaintext data buffer */
299
237
gpgme_data_release(dh_plain);
300
return plaintext_length;
238
return new_packet_length;
301
239
}
302
240
303
241
static const char * safer_gnutls_strerror (int value) {
304
const char *ret = gnutls_strerror (value); /* Spurious warning */
242
const char *ret = gnutls_strerror (value);
305
243
if (ret == NULL)
306
244
ret = "(unknown)";
307
245
return ret;
308
246
}
309
247
310
/* GnuTLS log function callback */
311
static void debuggnutls(__attribute__((unused)) int level,
312
const char* string){
313
fprintf(stderr, "GnuTLS: %s", string);
248
void debuggnutls(__attribute__((unused)) int level,
249
const char* string){
250
fprintf(stderr, "%s", string);
314
251
}
315
252
316
static int init_gnutls_global(mandos_context *mc,
317
const char *pubkeyfilename,
318
const char *seckeyfilename){
253
int initgnutls(encrypted_session *es){
254
const char *err;
319
255
int ret;
320
256
321
257
if(debug){
322
258
fprintf(stderr, "Initializing GnuTLS\n");
323
259
}
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));
260
261
if ((ret = gnutls_global_init ())
262
!= GNUTLS_E_SUCCESS) {
263
fprintf (stderr, "global_init: %s\n", safer_gnutls_strerror(ret));
329
264
return -1;
330
265
}
331
266
332
267
if (debug){
333
/* "Use a log level over 10 to enable all debugging options."
334
* - GnuTLS manual
335
*/
336
268
gnutls_global_set_log_level(11);
337
269
gnutls_global_set_log_function(debuggnutls);
338
270
}
339
271
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 */
272
/* openpgp credentials */
273
if ((ret = gnutls_certificate_allocate_credentials (&es->cred))
274
!= GNUTLS_E_SUCCESS) {
275
fprintf (stderr, "memory error: %s\n",
345
276
safer_gnutls_strerror(ret));
346
gnutls_global_deinit ();
347
277
return -1;
348
278
}
349
279
350
280
if(debug){
351
281
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
352
" and keyfile %s as GnuTLS credentials\n", pubkeyfilename,
353
seckeyfilename);
282
" and keyfile %s as GnuTLS credentials\n", certfile,
283
certkey);
354
284
}
355
285
356
286
ret = gnutls_certificate_set_openpgp_key_file
357
(mc->cred, pubkeyfilename, seckeyfilename,
358
GNUTLS_OPENPGP_FMT_BASE64);
287
(es->cred, certfile, certkey, GNUTLS_OPENPGP_FMT_BASE64);
359
288
if (ret != GNUTLS_E_SUCCESS) {
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",
289
fprintf
290
(stderr, "Error[%d] while reading the OpenPGP key pair ('%s',"
291
" '%s')\n",
292
ret, certfile, certkey);
293
fprintf(stdout, "The Error is: %s\n",
364
294
safer_gnutls_strerror(ret));
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
static int init_gnutls_session(mandos_context *mc,
394
gnutls_session_t *session){
395
int ret;
396
/* GnuTLS session creation */
397
ret = gnutls_init(session, GNUTLS_SERVER);
398
if (ret != GNUTLS_E_SUCCESS){
295
return -1;
296
}
297
298
//GnuTLS server initialization
299
if ((ret = gnutls_dh_params_init (&es->dh_params))
300
!= GNUTLS_E_SUCCESS) {
301
fprintf (stderr, "Error in dh parameter initialization: %s\n",
302
safer_gnutls_strerror(ret));
303
return -1;
304
}
305
306
if ((ret = gnutls_dh_params_generate2 (es->dh_params, DH_BITS))
307
!= GNUTLS_E_SUCCESS) {
308
fprintf (stderr, "Error in prime generation: %s\n",
309
safer_gnutls_strerror(ret));
310
return -1;
311
}
312
313
gnutls_certificate_set_dh_params (es->cred, es->dh_params);
314
315
// GnuTLS session creation
316
if ((ret = gnutls_init (&es->session, GNUTLS_SERVER))
317
!= GNUTLS_E_SUCCESS){
399
318
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
400
319
safer_gnutls_strerror(ret));
401
320
}
402
321
403
{
404
const char *err;
405
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
406
if (ret != GNUTLS_E_SUCCESS) {
407
fprintf(stderr, "Syntax error at: %s\n", err);
408
fprintf(stderr, "GnuTLS error: %s\n",
409
safer_gnutls_strerror(ret));
410
gnutls_deinit (*session);
411
return -1;
412
}
322
if ((ret = gnutls_priority_set_direct (es->session, "NORMAL", &err))
323
!= GNUTLS_E_SUCCESS) {
324
fprintf(stderr, "Syntax error at: %s\n", err);
325
fprintf(stderr, "GnuTLS error: %s\n",
326
safer_gnutls_strerror(ret));
327
return -1;
413
328
}
414
329
415
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
416
mc->cred);
417
if (ret != GNUTLS_E_SUCCESS) {
418
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
330
if ((ret = gnutls_credentials_set
331
(es->session, GNUTLS_CRD_CERTIFICATE, es->cred))
332
!= GNUTLS_E_SUCCESS) {
333
fprintf(stderr, "Error setting a credentials set: %s\n",
419
334
safer_gnutls_strerror(ret));
420
gnutls_deinit (*session);
421
335
return -1;
422
336
}
423
337
424
338
/* ignore client certificate if any. */
425
gnutls_certificate_server_set_request (*session,
339
gnutls_certificate_server_set_request (es->session,
426
340
GNUTLS_CERT_IGNORE);
427
341
428
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
342
gnutls_dh_set_prime_bits (es->session, DH_BITS);
429
343
430
344
return 0;
431
345
}
432
346
433
/* Avahi log function callback */
434
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
435
__attribute__((unused)) const char *txt){}
347
void empty_log(__attribute__((unused)) AvahiLogLevel level,
348
__attribute__((unused)) const char *txt){}
436
349
437
/* Called when a Mandos server is found */
438
static int start_mandos_communication(const char *ip, uint16_t port,
439
AvahiIfIndex if_index,
440
mandos_context *mc){
350
int start_mandos_communication(const char *ip, uint16_t port,
351
AvahiIfIndex if_index){
441
352
int ret, tcp_sd;
442
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
353
struct sockaddr_in6 to;
354
encrypted_session es;
443
355
char *buffer = NULL;
444
356
char *decrypted_buffer;
445
357
size_t buffer_length = 0;
446
358
size_t buffer_capacity = 0;
447
359
ssize_t decrypted_buffer_size;
448
size_t written;
360
size_t written = 0;
449
361
int retval = 0;
450
362
char interface[IF_NAMESIZE];
451
gnutls_session_t session;
452
453
ret = init_gnutls_session (mc, &session);
454
if (ret != 0){
455
return -1;
456
}
457
363
458
364
if(debug){
459
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
460
"\n", ip, port);
365
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
366
ip, port);
461
367
}
462
368
463
369
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
466
372
return -1;
467
373
}
468
374
469
if(debug){
470
if(if_indextoname((unsigned int)if_index, interface) == NULL){
375
if(if_indextoname((unsigned int)if_index, interface) == NULL){
376
if(debug){
471
377
perror("if_indextoname");
472
return -1;
473
378
}
379
return -1;
380
}
381
382
if(debug){
474
383
fprintf(stderr, "Binding to interface %s\n", interface);
475
384
}
476
385
477
memset(&to, 0, sizeof(to));
478
to.in6.sin6_family = AF_INET6;
479
/* It would be nice to have a way to detect if we were passed an
480
IPv4 address here. Now we assume an IPv6 address. */
481
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
386
memset(&to,0,sizeof(to)); /* Spurious warning */
387
to.sin6_family = AF_INET6;
388
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
482
389
if (ret < 0 ){
483
390
perror("inet_pton");
484
391
return -1;
485
}
392
}
486
393
if(ret == 0){
487
394
fprintf(stderr, "Bad address: %s\n", ip);
488
395
return -1;
489
396
}
490
to.in6.sin6_port = htons(port); /* Spurious warning */
397
to.sin6_port = htons(port); /* Spurious warning */
491
398
492
to.in6.sin6_scope_id = (uint32_t)if_index;
399
to.sin6_scope_id = (uint32_t)if_index;
493
400
494
401
if(debug){
495
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
496
port);
497
char addrstr[INET6_ADDRSTRLEN] = "";
498
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
499
sizeof(addrstr)) == NULL){
500
perror("inet_ntop");
501
} else {
502
if(strcmp(addrstr, ip) != 0){
503
fprintf(stderr, "Canonical address form: %s\n", addrstr);
504
}
505
}
402
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
403
/* char addrstr[INET6_ADDRSTRLEN]; */
404
/* if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr, */
405
/* sizeof(addrstr)) == NULL){ */
406
/* perror("inet_ntop"); */
407
/* } else { */
408
/* fprintf(stderr, "Really connecting to: %s, port %d\n", */
409
/* addrstr, ntohs(to.sin6_port)); */
410
/* } */
506
411
}
507
412
508
ret = connect(tcp_sd, &to.in, sizeof(to));
413
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
509
414
if (ret < 0){
510
415
perror("connect");
511
416
return -1;
512
417
}
513
418
514
const char *out = mandos_protocol_version;
515
written = 0;
516
while (true){
517
size_t out_size = strlen(out);
518
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
519
out_size - written));
520
if (ret == -1){
521
perror("write");
522
retval = -1;
523
goto mandos_end;
524
}
525
written += (size_t)ret;
526
if(written < out_size){
527
continue;
528
} else {
529
if (out == mandos_protocol_version){
530
written = 0;
531
out = "\r\n";
532
} else {
533
break;
534
}
535
}
419
ret = initgnutls (&es);
420
if (ret != 0){
421
retval = -1;
422
return -1;
536
423
}
537
424
425
gnutls_transport_set_ptr (es.session,
426
(gnutls_transport_ptr_t) tcp_sd);
427
538
428
if(debug){
539
429
fprintf(stderr, "Establishing TLS session with %s\n", ip);
540
430
}
541
431
542
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
543
544
do{
545
ret = gnutls_handshake (session);
546
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
432
ret = gnutls_handshake (es.session);
547
433
548
434
if (ret != GNUTLS_E_SUCCESS){
549
435
if(debug){
550
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
436
fprintf(stderr, "\n*** Handshake failed ***\n");
551
437
gnutls_perror (ret);
552
438
}
553
439
retval = -1;
554
goto mandos_end;
440
goto exit;
555
441
}
556
442
557
/* Read OpenPGP packet that contains the wanted password */
443
//Retrieve OpenPGP packet that contains the wanted password
558
444
559
445
if(debug){
560
446
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
561
447
ip);
562
448
}
563
449
564
450
while(true){
565
buffer_capacity = adjustbuffer(&buffer, buffer_length,
566
buffer_capacity);
567
if (buffer_capacity == 0){
568
perror("adjustbuffer");
569
retval = -1;
570
goto mandos_end;
451
if (buffer_length + BUFFER_SIZE > buffer_capacity){
452
buffer = realloc(buffer, buffer_capacity + BUFFER_SIZE);
453
if (buffer == NULL){
454
perror("realloc");
455
goto exit;
456
}
457
buffer_capacity += BUFFER_SIZE;
571
458
}
572
459
573
ret = gnutls_record_recv(session, buffer+buffer_length,
574
BUFFER_SIZE);
460
ret = gnutls_record_recv
461
(es.session, buffer+buffer_length, BUFFER_SIZE);
575
462
if (ret == 0){
576
463
break;
577
464
}
581
468
case GNUTLS_E_AGAIN:
582
469
break;
583
470
case GNUTLS_E_REHANDSHAKE:
584
do{
585
ret = gnutls_handshake (session);
586
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
471
ret = gnutls_handshake (es.session);
587
472
if (ret < 0){
588
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
473
fprintf(stderr, "\n*** Handshake failed ***\n");
589
474
gnutls_perror (ret);
590
475
retval = -1;
591
goto mandos_end;
476
goto exit;
592
477
}
593
478
break;
594
479
default:
595
480
fprintf(stderr, "Unknown error while reading data from"
596
" encrypted session with Mandos server\n");
481
" encrypted session with mandos server\n");
597
482
retval = -1;
598
gnutls_bye (session, GNUTLS_SHUT_RDWR);
599
goto mandos_end;
483
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
484
goto exit;
600
485
}
601
486
} else {
602
487
buffer_length += (size_t) ret;
603
488
}
604
489
}
605
490
606
if(debug){
607
fprintf(stderr, "Closing TLS session\n");
608
}
609
610
gnutls_bye (session, GNUTLS_SHUT_RDWR);
611
612
491
if (buffer_length > 0){
613
492
decrypted_buffer_size = pgp_packet_decrypt(buffer,
614
493
buffer_length,
615
494
&decrypted_buffer,
616
keydir);
495
certdir);
617
496
if (decrypted_buffer_size >= 0){
618
written = 0;
619
497
while(written < (size_t) decrypted_buffer_size){
620
498
ret = (int)fwrite (decrypted_buffer + written, 1,
621
499
(size_t)decrypted_buffer_size - written,
634
512
} else {
635
513
retval = -1;
636
514
}
637
} else {
638
retval = -1;
639
}
640
641
/* Shutdown procedure */
642
643
mandos_end:
515
}
516
517
//shutdown procedure
518
519
if(debug){
520
fprintf(stderr, "Closing TLS session\n");
521
}
522
644
523
free(buffer);
524
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
525
exit:
645
526
close(tcp_sd);
646
gnutls_deinit (session);
527
gnutls_deinit (es.session);
528
gnutls_certificate_free_credentials (es.cred);
529
gnutls_global_deinit ();
647
530
return retval;
648
531
}
649
532
650
static void resolve_callback(AvahiSServiceResolver *r,
651
AvahiIfIndex interface,
652
AVAHI_GCC_UNUSED AvahiProtocol protocol,
653
AvahiResolverEvent event,
654
const char *name,
655
const char *type,
656
const char *domain,
657
const char *host_name,
658
const AvahiAddress *address,
659
uint16_t port,
660
AVAHI_GCC_UNUSED AvahiStringList *txt,
661
AVAHI_GCC_UNUSED AvahiLookupResultFlags
662
flags,
663
void* userdata) {
664
mandos_context *mc = userdata;
665
assert(r);
533
static AvahiSimplePoll *simple_poll = NULL;
534
static AvahiServer *server = NULL;
535
536
static void resolve_callback(
537
AvahiSServiceResolver *r,
538
AvahiIfIndex interface,
539
AVAHI_GCC_UNUSED AvahiProtocol protocol,
540
AvahiResolverEvent event,
541
const char *name,
542
const char *type,
543
const char *domain,
544
const char *host_name,
545
const AvahiAddress *address,
546
uint16_t port,
547
AVAHI_GCC_UNUSED AvahiStringList *txt,
548
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
549
AVAHI_GCC_UNUSED void* userdata) {
550
551
assert(r); /* Spurious warning */
666
552
667
553
/* Called whenever a service has been resolved successfully or
668
554
timed out */
670
556
switch (event) {
671
557
default:
672
558
case AVAHI_RESOLVER_FAILURE:
673
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
674
" of type '%s' in domain '%s': %s\n", name, type, domain,
675
avahi_strerror(avahi_server_errno(mc->server)));
559
fprintf(stderr, "(Resolver) Failed to resolve service '%s' of"
560
" type '%s' in domain '%s': %s\n", name, type, domain,
561
avahi_strerror(avahi_server_errno(server)));
676
562
break;
677
563
678
564
case AVAHI_RESOLVER_FOUND:
680
566
char ip[AVAHI_ADDRESS_STR_MAX];
681
567
avahi_address_snprint(ip, sizeof(ip), address);
682
568
if(debug){
683
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
684
PRIu16 ") on port %d\n", name, host_name, ip,
685
interface, port);
569
fprintf(stderr, "Mandos server \"%s\" found on %s (%s) on"
570
" port %d\n", name, host_name, ip, port);
686
571
}
687
int ret = start_mandos_communication(ip, port, interface, mc);
572
int ret = start_mandos_communication(ip, port, interface);
688
573
if (ret == 0){
689
avahi_simple_poll_quit(mc->simple_poll);
574
exit(EXIT_SUCCESS);
690
575
}
691
576
}
692
577
}
693
578
avahi_s_service_resolver_free(r);
694
579
}
695
580
696
static void browse_callback( AvahiSServiceBrowser *b,
697
AvahiIfIndex interface,
698
AvahiProtocol protocol,
699
AvahiBrowserEvent event,
700
const char *name,
701
const char *type,
702
const char *domain,
703
AVAHI_GCC_UNUSED AvahiLookupResultFlags
704
flags,
705
void* userdata) {
706
mandos_context *mc = userdata;
707
assert(b);
708
709
/* Called whenever a new services becomes available on the LAN or
710
is removed from the LAN */
711
712
switch (event) {
713
default:
714
case AVAHI_BROWSER_FAILURE:
715
716
fprintf(stderr, "(Avahi browser) %s\n",
717
avahi_strerror(avahi_server_errno(mc->server)));
718
avahi_simple_poll_quit(mc->simple_poll);
719
return;
720
721
case AVAHI_BROWSER_NEW:
722
/* We ignore the returned Avahi resolver object. In the callback
723
function we free it. If the Avahi server is terminated before
724
the callback function is called the Avahi server will free the
725
resolver for us. */
726
727
if (!(avahi_s_service_resolver_new(mc->server, interface,
728
protocol, name, type, domain,
729
AVAHI_PROTO_INET6, 0,
730
resolve_callback, mc)))
731
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
732
name, avahi_strerror(avahi_server_errno(mc->server)));
733
break;
734
735
case AVAHI_BROWSER_REMOVE:
736
break;
737
738
case AVAHI_BROWSER_ALL_FOR_NOW:
739
case AVAHI_BROWSER_CACHE_EXHAUSTED:
740
if(debug){
741
fprintf(stderr, "No Mandos server found, still searching...\n");
581
static void browse_callback(
582
AvahiSServiceBrowser *b,
583
AvahiIfIndex interface,
584
AvahiProtocol protocol,
585
AvahiBrowserEvent event,
586
const char *name,
587
const char *type,
588
const char *domain,
589
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
590
void* userdata) {
591
592
AvahiServer *s = userdata;
593
assert(b); /* Spurious warning */
594
595
/* Called whenever a new services becomes available on the LAN or
596
is removed from the LAN */
597
598
switch (event) {
599
default:
600
case AVAHI_BROWSER_FAILURE:
601
602
fprintf(stderr, "(Browser) %s\n",
603
avahi_strerror(avahi_server_errno(server)));
604
avahi_simple_poll_quit(simple_poll);
605
return;
606
607
case AVAHI_BROWSER_NEW:
608
/* We ignore the returned resolver object. In the callback
609
function we free it. If the server is terminated before
610
the callback function is called the server will free
611
the resolver for us. */
612
613
if (!(avahi_s_service_resolver_new(s, interface, protocol, name,
614
type, domain,
615
AVAHI_PROTO_INET6, 0,
616
resolve_callback, s)))
617
fprintf(stderr, "Failed to resolve service '%s': %s\n", name,
618
avahi_strerror(avahi_server_errno(s)));
619
break;
620
621
case AVAHI_BROWSER_REMOVE:
622
break;
623
624
case AVAHI_BROWSER_ALL_FOR_NOW:
625
case AVAHI_BROWSER_CACHE_EXHAUSTED:
626
break;
742
627
}
743
break;
744
}
745
628
}
746
629
747
/* Combines file name and path and returns the malloced new
748
string. some sane checks could/should be added */
749
static char *combinepath(const char *first, const char *second){
630
/* combinds file name and path and returns the malloced new string. som sane checks could/should be added */
631
const char *combinepath(const char *first, const char *second){
750
632
char *tmp;
751
int ret = asprintf(&tmp, "%s/%s", first, second);
752
if(ret < 0){
633
tmp = malloc(strlen(first) + strlen(second) + 2);
634
if (tmp == NULL){
635
perror("malloc");
753
636
return NULL;
754
637
}
638
strcpy(tmp, first);
639
if (first[0] != '\0' and first[strlen(first) - 1] != '/'){
640
strcat(tmp, "/");
641
}
642
strcat(tmp, second);
755
643
return tmp;
756
644
}
757
645
758
646
759
int main(int argc, char *argv[]){
647
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
648
AvahiServerConfig config;
760
649
AvahiSServiceBrowser *sb = NULL;
761
650
int error;
762
651
int ret;
763
int exitcode = EXIT_SUCCESS;
764
const char *interface = "eth0";
765
struct ifreq network;
766
int sd;
767
uid_t uid;
768
gid_t gid;
652
int returncode = EXIT_SUCCESS;
653
const char *interface = NULL;
654
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
769
655
char *connect_to = NULL;
770
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
771
char *pubkeyfilename = NULL;
772
char *seckeyfilename = NULL;
773
const char *pubkeyname = "pubkey.txt";
774
const char *seckeyname = "seckey.txt";
775
mandos_context mc = { .simple_poll = NULL, .server = NULL,
776
.dh_bits = 1024, .priority = "SECURE256"
777
":!CTYPE-X.509:+CTYPE-OPENPGP" };
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 = "ADDRESS:PORT",
786
.doc = "Connect directly to a specific Mandos server",
787
.group = 1 },
788
{ .name = "interface", .key = 'i',
789
.arg = "NAME",
790
.doc = "Interface that will be used to search for Mandos"
791
" servers",
792
.group = 1 },
793
{ .name = "keydir", .key = 'd',
794
.arg = "DIRECTORY",
795
.doc = "Directory to read the OpenPGP key files from",
796
.group = 1 },
797
{ .name = "seckey", .key = 's',
798
.arg = "FILE",
799
.doc = "OpenPGP secret key file base name",
800
.group = 1 },
801
{ .name = "pubkey", .key = 'p',
802
.arg = "FILE",
803
.doc = "OpenPGP public key file base name",
804
.group = 2 },
805
{ .name = "dh-bits", .key = 129,
806
.arg = "BITS",
807
.doc = "Bit length of the prime number used in the"
808
" Diffie-Hellman key exchange",
809
.group = 2 },
810
{ .name = "priority", .key = 130,
811
.arg = "STRING",
812
.doc = "GnuTLS priority string for the TLS handshake",
813
.group = 1 },
814
{ .name = NULL }
815
};
816
817
error_t parse_opt (int key, char *arg,
818
struct argp_state *state) {
819
/* Get the INPUT argument from `argp_parse', which we know is
820
a pointer to our plugin list pointer. */
821
switch (key) {
822
case 128: /* --debug */
823
debug = true;
824
break;
825
case 'c': /* --connect */
826
connect_to = arg;
827
break;
828
case 'i': /* --interface */
829
interface = arg;
830
break;
831
case 'd': /* --keydir */
832
keydir = arg;
833
break;
834
case 's': /* --seckey */
835
seckeyname = arg;
836
break;
837
case 'p': /* --pubkey */
838
pubkeyname = arg;
839
break;
840
case 129: /* --dh-bits */
841
errno = 0;
842
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
843
if (errno){
844
perror("strtol");
845
exit(EXIT_FAILURE);
846
}
847
break;
848
case 130: /* --priority */
849
mc.priority = arg;
850
break;
851
case ARGP_KEY_ARG:
852
argp_usage (state);
853
case ARGP_KEY_END:
854
break;
855
default:
856
return ARGP_ERR_UNKNOWN;
857
}
858
return 0;
859
}
860
861
struct argp argp = { .options = options, .parser = parse_opt,
862
.args_doc = "",
863
.doc = "Mandos client -- Get and decrypt"
864
" passwords from a Mandos server" };
865
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
866
if (ret == ARGP_ERR_UNKNOWN){
867
fprintf(stderr, "Unknown error while parsing arguments\n");
868
exitcode = EXIT_FAILURE;
869
goto end;
870
}
871
}
872
873
pubkeyfilename = combinepath(keydir, pubkeyname);
874
if (pubkeyfilename == NULL){
875
perror("combinepath");
876
exitcode = EXIT_FAILURE;
877
goto end;
878
}
879
880
seckeyfilename = combinepath(keydir, seckeyname);
881
if (seckeyfilename == NULL){
882
perror("combinepath");
883
exitcode = EXIT_FAILURE;
884
goto end;
885
}
886
887
ret = init_gnutls_global(&mc, pubkeyfilename, seckeyfilename);
888
if (ret == -1){
889
fprintf(stderr, "init_gnutls_global failed\n");
890
exitcode = EXIT_FAILURE;
891
goto end;
892
} else {
893
gnutls_initalized = true;
894
}
895
896
/* If the interface is down, bring it up */
897
{
898
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
899
if(sd < 0) {
900
perror("socket");
901
exitcode = EXIT_FAILURE;
902
goto end;
903
}
904
strcpy(network.ifr_name, interface);
905
ret = ioctl(sd, SIOCGIFFLAGS, &network);
906
if(ret == -1){
907
perror("ioctl SIOCGIFFLAGS");
908
exitcode = EXIT_FAILURE;
909
goto end;
910
}
911
if((network.ifr_flags & IFF_UP) == 0){
912
network.ifr_flags |= IFF_UP;
913
ret = ioctl(sd, SIOCSIFFLAGS, &network);
914
if(ret == -1){
915
perror("ioctl SIOCSIFFLAGS");
916
exitcode = EXIT_FAILURE;
917
goto end;
918
}
919
}
920
close(sd);
921
}
922
923
uid = getuid();
924
gid = getgid();
925
926
ret = setuid(uid);
927
if (ret == -1){
928
perror("setuid");
929
}
930
931
setgid(gid);
932
if (ret == -1){
933
perror("setgid");
934
}
935
936
if_index = (AvahiIfIndex) if_nametoindex(interface);
937
if(if_index == 0){
938
fprintf(stderr, "No such interface: \"%s\"\n", interface);
939
exit(EXIT_FAILURE);
656
657
while (true){
658
static struct option long_options[] = {
659
{"debug", no_argument, (int *)&debug, 1},
660
{"connect", required_argument, 0, 'C'},
661
{"interface", required_argument, 0, 'i'},
662
{"certdir", required_argument, 0, 'd'},
663
{"certkey", required_argument, 0, 'c'},
664
{"certfile", required_argument, 0, 'k'},
665
{0, 0, 0, 0} };
666
667
int option_index = 0;
668
ret = getopt_long (argc, argv, "i:", long_options,
669
&option_index);
670
671
if (ret == -1){
672
break;
673
}
674
675
switch(ret){
676
case 0:
677
break;
678
case 'i':
679
interface = optarg;
680
break;
681
case 'C':
682
connect_to = optarg;
683
break;
684
case 'd':
685
certdir = optarg;
686
break;
687
case 'c':
688
certfile = optarg;
689
break;
690
case 'k':
691
certkey = optarg;
692
break;
693
default:
694
exit(EXIT_FAILURE);
695
}
696
}
697
698
certfile = combinepath(certdir, certfile);
699
if (certfile == NULL){
700
goto exit;
701
}
702
703
if(interface != NULL){
704
if_index = (AvahiIfIndex) if_nametoindex(interface);
705
if(if_index == 0){
706
fprintf(stderr, "No such interface: \"%s\"\n", interface);
707
exit(EXIT_FAILURE);
708
}
940
709
}
941
710
942
711
if(connect_to != NULL){
945
714
char *address = strrchr(connect_to, ':');
946
715
if(address == NULL){
947
716
fprintf(stderr, "No colon in address\n");
948
exitcode = EXIT_FAILURE;
949
goto end;
717
exit(EXIT_FAILURE);
950
718
}
951
719
errno = 0;
952
720
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
953
721
if(errno){
954
722
perror("Bad port number");
955
exitcode = EXIT_FAILURE;
956
goto end;
723
exit(EXIT_FAILURE);
957
724
}
958
725
*address = '\0';
959
726
address = connect_to;
960
ret = start_mandos_communication(address, port, if_index, &mc);
727
ret = start_mandos_communication(address, port, if_index);
961
728
if(ret < 0){
962
exitcode = EXIT_FAILURE;
729
exit(EXIT_FAILURE);
963
730
} else {
964
exitcode = EXIT_SUCCESS;
731
exit(EXIT_SUCCESS);
965
732
}
966
goto end;
733
}
734
735
certkey = combinepath(certdir, certkey);
736
if (certkey == NULL){
737
goto exit;
967
738
}
968
739
969
740
if (not debug){
970
741
avahi_set_log_function(empty_log);
971
742
}
972
743
973
/* Initialize the pseudo-RNG for Avahi */
744
/* Initialize the psuedo-RNG */
974
745
srand((unsigned int) time(NULL));
975
976
/* Allocate main Avahi loop object */
977
mc.simple_poll = avahi_simple_poll_new();
978
if (mc.simple_poll == NULL) {
979
fprintf(stderr, "Avahi: Failed to create simple poll"
980
" object.\n");
981
exitcode = EXIT_FAILURE;
982
goto end;
983
}
984
985
{
986
AvahiServerConfig config;
987
/* Do not publish any local Zeroconf records */
988
avahi_server_config_init(&config);
989
config.publish_hinfo = 0;
990
config.publish_addresses = 0;
991
config.publish_workstation = 0;
992
config.publish_domain = 0;
993
994
/* Allocate a new server */
995
mc.server = avahi_server_new(avahi_simple_poll_get
996
(mc.simple_poll), &config, NULL,
997
NULL, &error);
998
999
/* Free the Avahi configuration data */
1000
avahi_server_config_free(&config);
1001
}
1002
1003
/* Check if creating the Avahi server object succeeded */
1004
if (mc.server == NULL) {
1005
fprintf(stderr, "Failed to create Avahi server: %s\n",
746
747
/* Allocate main loop object */
748
if (!(simple_poll = avahi_simple_poll_new())) {
749
fprintf(stderr, "Failed to create simple poll object.\n");
750
751
goto exit;
752
}
753
754
/* Do not publish any local records */
755
avahi_server_config_init(&config);
756
config.publish_hinfo = 0;
757
config.publish_addresses = 0;
758
config.publish_workstation = 0;
759
config.publish_domain = 0;
760
761
/* Allocate a new server */
762
server = avahi_server_new(avahi_simple_poll_get(simple_poll),
763
&config, NULL, NULL, &error);
764
765
/* Free the configuration data */
766
avahi_server_config_free(&config);
767
768
/* Check if creating the server object succeeded */
769
if (!server) {
770
fprintf(stderr, "Failed to create server: %s\n",
1006
771
avahi_strerror(error));
1007
exitcode = EXIT_FAILURE;
1008
goto end;
772
returncode = EXIT_FAILURE;
773
goto exit;
1009
774
}
1010
775
1011
/* Create the Avahi service browser */
1012
sb = avahi_s_service_browser_new(mc.server, if_index,
776
/* Create the service browser */
777
sb = avahi_s_service_browser_new(server, if_index,
1013
778
AVAHI_PROTO_INET6,
1014
779
"_mandos._tcp", NULL, 0,
1015
browse_callback, &mc);
1016
if (sb == NULL) {
780
browse_callback, server);
781
if (!sb) {
1017
782
fprintf(stderr, "Failed to create service browser: %s\n",
1018
avahi_strerror(avahi_server_errno(mc.server)));
1019
exitcode = EXIT_FAILURE;
1020
goto end;
783
avahi_strerror(avahi_server_errno(server)));
784
returncode = EXIT_FAILURE;
785
goto exit;
1021
786
}
1022
787
1023
788
/* Run the main loop */
1024
789
1025
790
if (debug){
1026
fprintf(stderr, "Starting Avahi loop search\n");
791
fprintf(stderr, "Starting avahi loop search\n");
1027
792
}
1028
793
1029
avahi_simple_poll_loop(mc.simple_poll);
1030
1031
end:
1032
794
avahi_simple_poll_loop(simple_poll);
795
796
exit:
797
1033
798
if (debug){
1034
799
fprintf(stderr, "%s exiting\n", argv[0]);
1035
800
}
1036
801
1037
802
/* Cleanup things */
1038
if (sb != NULL)
803
if (sb)
1039
804
avahi_s_service_browser_free(sb);
1040
805
1041
if (mc.server != NULL)
1042
avahi_server_free(mc.server);
1043
1044
if (mc.simple_poll != NULL)
1045
avahi_simple_poll_free(mc.simple_poll);
1046
free(pubkeyfilename);
1047
free(seckeyfilename);
1048
1049
if (gnutls_initalized){
1050
gnutls_certificate_free_credentials(mc.cred);
1051
gnutls_global_deinit ();
1052
}
1053
1054
return exitcode;
806
if (server)
807
avahi_server_free(server);
808
809
if (simple_poll)
810
avahi_simple_poll_free(simple_poll);
811
free(certfile);
812
free(certkey);
813
814
return returncode;
1055
815
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0