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24.1.72
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: plugins.d/password-request.c
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- Committer: Björn Påhlsson
- Date: 2008-08-27 07:16:25 UTC
- mfrom: (109 mandos)
- mto: (237.7.1 mandos) (24.1.154 mandos)
- mto: This revision was merged to the branch mainline in revision 132.
- Revision ID: belorn@braxen-20080827071625-yi2mrlaej4m4az8f
merge
- files added:
- .bzrignore
- files removed:
- ca.pem
- files renamed:
- server.py => mandos
- server.conf => mandos.conf
- 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
32
32
#define _LARGEFILE_SOURCE
33
33
#define _FILE_OFFSET_BITS 64
34
34
35
#include <stdio.h>
36
#include <assert.h>
37
#include <stdlib.h>
38
#include <time.h>
39
#include <net/if.h> /* if_nametoindex */
40
#include <sys/ioctl.h> // ioctl, ifreq, SIOCGIFFLAGS, IFF_UP, SIOCSIFFLAGS
41
#include <net/if.h> // ioctl, ifreq, SIOCGIFFLAGS, IFF_UP, SIOCSIFFLAGS
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
static const char *certdir = "/conf/conf.d/mandos";
75
static const char *certfile = "openpgp-client.txt";
76
static 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
109
AvahiSimplePoll *simple_poll;
82
110
AvahiServer *server;
83
111
gnutls_certificate_credentials_t cred;
84
112
unsigned int dh_bits;
113
gnutls_dh_params_t dh_params;
85
114
const char *priority;
86
115
} mandos_context;
87
116
88
static ssize_t pgp_packet_decrypt (char *packet, size_t packet_size,
89
char **new_packet,
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,
90
141
const char *homedir){
91
142
gpgme_data_t dh_crypto, dh_plain;
92
143
gpgme_ctx_t ctx;
93
144
gpgme_error_t rc;
94
145
ssize_t ret;
95
ssize_t new_packet_capacity = 0;
96
ssize_t new_packet_length = 0;
146
size_t plaintext_capacity = 0;
147
ssize_t plaintext_length = 0;
97
148
gpgme_engine_info_t engine_info;
98
149
99
150
if (debug){
100
fprintf(stderr, "Trying to decrypt OpenPGP packet\n");
151
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
101
152
}
102
153
103
154
/* Init GPGME */
109
160
return -1;
110
161
}
111
162
112
/* Set GPGME home directory */
163
/* Set GPGME home directory for the OpenPGP engine only */
113
164
rc = gpgme_get_engine_info (&engine_info);
114
165
if (rc != GPG_ERR_NO_ERROR){
115
166
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
125
176
engine_info = engine_info->next;
126
177
}
127
178
if(engine_info == NULL){
128
fprintf(stderr, "Could not set home dir to %s\n", homedir);
179
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
129
180
return -1;
130
181
}
131
182
132
/* Create new GPGME data buffer from packet buffer */
133
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);
134
186
if (rc != GPG_ERR_NO_ERROR){
135
187
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
136
188
gpgme_strsource(rc), gpgme_strerror(rc));
142
194
if (rc != GPG_ERR_NO_ERROR){
143
195
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
144
196
gpgme_strsource(rc), gpgme_strerror(rc));
197
gpgme_data_release(dh_crypto);
145
198
return -1;
146
199
}
147
200
150
203
if (rc != GPG_ERR_NO_ERROR){
151
204
fprintf(stderr, "bad gpgme_new: %s: %s\n",
152
205
gpgme_strsource(rc), gpgme_strerror(rc));
153
return -1;
206
plaintext_length = -1;
207
goto decrypt_end;
154
208
}
155
209
156
/* Decrypt data from the FILE pointer to the plaintext data
157
buffer */
210
/* Decrypt data from the cryptotext data buffer to the plaintext
211
data buffer */
158
212
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
159
213
if (rc != GPG_ERR_NO_ERROR){
160
214
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
161
215
gpgme_strsource(rc), gpgme_strerror(rc));
162
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;
163
246
}
164
247
165
248
if(debug){
166
fprintf(stderr, "Decryption of OpenPGP packet succeeded\n");
167
}
168
169
if (debug){
170
gpgme_decrypt_result_t result;
171
result = gpgme_op_decrypt_result(ctx);
172
if (result == NULL){
173
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
174
} else {
175
fprintf(stderr, "Unsupported algorithm: %s\n",
176
result->unsupported_algorithm);
177
fprintf(stderr, "Wrong key usage: %d\n",
178
result->wrong_key_usage);
179
if(result->file_name != NULL){
180
fprintf(stderr, "File name: %s\n", result->file_name);
181
}
182
gpgme_recipient_t recipient;
183
recipient = result->recipients;
184
if(recipient){
185
while(recipient != NULL){
186
fprintf(stderr, "Public key algorithm: %s\n",
187
gpgme_pubkey_algo_name(recipient->pubkey_algo));
188
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
189
fprintf(stderr, "Secret key available: %s\n",
190
recipient->status == GPG_ERR_NO_SECKEY
191
? "No" : "Yes");
192
recipient = recipient->next;
193
}
194
}
195
}
196
}
197
198
/* Delete the GPGME FILE pointer cryptotext data buffer */
199
gpgme_data_release(dh_crypto);
249
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
250
}
200
251
201
252
/* Seek back to the beginning of the GPGME plaintext data buffer */
202
253
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
203
254
perror("pgpme_data_seek");
255
plaintext_length = -1;
256
goto decrypt_end;
204
257
}
205
258
206
*new_packet = 0;
259
*plaintext = NULL;
207
260
while(true){
208
if (new_packet_length + BUFFER_SIZE > new_packet_capacity){
209
*new_packet = realloc(*new_packet,
210
(unsigned int)new_packet_capacity
211
+ BUFFER_SIZE);
212
if (*new_packet == NULL){
213
perror("realloc");
214
return -1;
215
}
216
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;
217
268
}
218
269
219
ret = gpgme_data_read(dh_plain, *new_packet + new_packet_length,
270
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
220
271
BUFFER_SIZE);
221
272
/* Print the data, if any */
222
273
if (ret == 0){
274
/* EOF */
223
275
break;
224
276
}
225
277
if(ret < 0){
226
278
perror("gpgme_data_read");
227
return -1;
279
plaintext_length = -1;
280
goto decrypt_end;
228
281
}
229
new_packet_length += ret;
282
plaintext_length += ret;
230
283
}
231
284
232
/* FIXME: check characters before printing to screen so to not print
233
terminal control characters */
234
/* if(debug){ */
235
/* fprintf(stderr, "decrypted password is: "); */
236
/* fwrite(*new_packet, 1, new_packet_length, stderr); */
237
/* fprintf(stderr, "\n"); */
238
/* } */
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);
239
297
240
298
/* Delete the GPGME plaintext data buffer */
241
299
gpgme_data_release(dh_plain);
242
return new_packet_length;
300
return plaintext_length;
243
301
}
244
302
245
303
static const char * safer_gnutls_strerror (int value) {
246
const char *ret = gnutls_strerror (value);
304
const char *ret = gnutls_strerror (value); /* Spurious warning */
247
305
if (ret == NULL)
248
306
ret = "(unknown)";
249
307
return ret;
250
308
}
251
309
310
/* GnuTLS log function callback */
252
311
static void debuggnutls(__attribute__((unused)) int level,
253
312
const char* string){
254
fprintf(stderr, "%s", string);
313
fprintf(stderr, "GnuTLS: %s", string);
255
314
}
256
315
257
static int initgnutls(mandos_context *mc){
258
const char *err;
316
static int init_gnutls_global(mandos_context *mc,
317
const char *pubkeyfilename,
318
const char *seckeyfilename){
259
319
int ret;
260
320
261
321
if(debug){
262
322
fprintf(stderr, "Initializing GnuTLS\n");
263
323
}
264
265
if ((ret = gnutls_global_init ())
266
!= GNUTLS_E_SUCCESS) {
267
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));
268
329
return -1;
269
330
}
270
331
271
332
if (debug){
333
/* "Use a log level over 10 to enable all debugging options."
334
* - GnuTLS manual
335
*/
272
336
gnutls_global_set_log_level(11);
273
337
gnutls_global_set_log_function(debuggnutls);
274
338
}
275
339
276
/* openpgp credentials */
277
if ((ret = gnutls_certificate_allocate_credentials (&es->cred))
278
!= GNUTLS_E_SUCCESS) {
279
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 */
280
345
safer_gnutls_strerror(ret));
346
gnutls_global_deinit ();
281
347
return -1;
282
348
}
283
349
284
350
if(debug){
285
351
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
286
" and keyfile %s as GnuTLS credentials\n", certfile,
287
certkey);
352
" and keyfile %s as GnuTLS credentials\n", pubkeyfilename,
353
seckeyfilename);
288
354
}
289
355
290
356
ret = gnutls_certificate_set_openpgp_key_file
291
(es->cred, certfile, certkey, GNUTLS_OPENPGP_FMT_BASE64);
357
(mc->cred, pubkeyfilename, seckeyfilename,
358
GNUTLS_OPENPGP_FMT_BASE64);
292
359
if (ret != GNUTLS_E_SUCCESS) {
293
fprintf
294
(stderr, "Error[%d] while reading the OpenPGP key pair ('%s',"
295
" '%s')\n",
296
ret, certfile, certkey);
297
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",
298
364
safer_gnutls_strerror(ret));
299
return -1;
300
}
301
302
//GnuTLS server initialization
303
if ((ret = gnutls_dh_params_init (&es->dh_params))
304
!= GNUTLS_E_SUCCESS) {
305
fprintf (stderr, "Error in dh parameter initialization: %s\n",
306
safer_gnutls_strerror(ret));
307
return -1;
308
}
309
310
if ((ret = gnutls_dh_params_generate2 (es->dh_params, DH_BITS))
311
!= GNUTLS_E_SUCCESS) {
312
fprintf (stderr, "Error in prime generation: %s\n",
313
safer_gnutls_strerror(ret));
314
return -1;
315
}
316
317
gnutls_certificate_set_dh_params (es->cred, es->dh_params);
318
319
// GnuTLS session creation
320
if ((ret = gnutls_init (&es->session, GNUTLS_SERVER))
321
!= 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){
322
400
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
323
401
safer_gnutls_strerror(ret));
324
402
}
325
403
326
if ((ret = gnutls_priority_set_direct (es->session, mc->priority, &err))
327
!= GNUTLS_E_SUCCESS) {
328
fprintf(stderr, "Syntax error at: %s\n", err);
329
fprintf(stderr, "GnuTLS error: %s\n",
330
safer_gnutls_strerror(ret));
331
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
}
332
414
}
333
415
334
if ((ret = gnutls_credentials_set
335
(es->session, GNUTLS_CRD_CERTIFICATE, es->cred))
336
!= GNUTLS_E_SUCCESS) {
337
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",
338
420
safer_gnutls_strerror(ret));
421
gnutls_deinit (*session);
339
422
return -1;
340
423
}
341
424
342
425
/* ignore client certificate if any. */
343
gnutls_certificate_server_set_request (es->session,
426
gnutls_certificate_server_set_request (*session,
344
427
GNUTLS_CERT_IGNORE);
345
428
346
gnutls_dh_set_prime_bits (es->session, DH_BITS);
429
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
347
430
348
431
return 0;
349
432
}
350
433
434
/* Avahi log function callback */
351
435
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
352
436
__attribute__((unused)) const char *txt){}
353
437
438
/* Called when a Mandos server is found */
354
439
static int start_mandos_communication(const char *ip, uint16_t port,
355
440
AvahiIfIndex if_index,
356
441
mandos_context *mc){
357
442
int ret, tcp_sd;
358
struct sockaddr_in6 to;
359
encrypted_session es;
443
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
360
444
char *buffer = NULL;
361
445
char *decrypted_buffer;
362
446
size_t buffer_length = 0;
363
447
size_t buffer_capacity = 0;
364
448
ssize_t decrypted_buffer_size;
365
size_t written = 0;
449
size_t written;
366
450
int retval = 0;
367
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
}
368
458
369
459
if(debug){
370
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
371
ip, port);
460
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
461
"\n", ip, port);
372
462
}
373
463
374
464
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
379
469
380
470
if(debug){
381
471
if(if_indextoname((unsigned int)if_index, interface) == NULL){
382
if(debug){
383
perror("if_indextoname");
384
}
472
perror("if_indextoname");
385
473
return -1;
386
474
}
387
388
475
fprintf(stderr, "Binding to interface %s\n", interface);
389
476
}
390
477
391
memset(&to,0,sizeof(to)); /* Spurious warning */
392
to.sin6_family = AF_INET6;
393
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);
394
483
if (ret < 0 ){
395
484
perror("inet_pton");
396
485
return -1;
397
}
486
}
398
487
if(ret == 0){
399
488
fprintf(stderr, "Bad address: %s\n", ip);
400
489
return -1;
401
490
}
402
to.sin6_port = htons(port); /* Spurious warning */
491
to.in6.sin6_port = htons(port); /* Spurious warning */
403
492
404
to.sin6_scope_id = (uint32_t)if_index;
493
to.in6.sin6_scope_id = (uint32_t)if_index;
405
494
406
495
if(debug){
407
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
408
/* char addrstr[INET6_ADDRSTRLEN]; */
409
/* if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr, */
410
/* sizeof(addrstr)) == NULL){ */
411
/* perror("inet_ntop"); */
412
/* } else { */
413
/* fprintf(stderr, "Really connecting to: %s, port %d\n", */
414
/* addrstr, ntohs(to.sin6_port)); */
415
/* } */
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
}
416
507
}
417
508
418
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
509
ret = connect(tcp_sd, &to.in, sizeof(to));
419
510
if (ret < 0){
420
511
perror("connect");
421
512
return -1;
422
513
}
423
424
ret = initgnutls (&es);
425
if (ret != 0){
426
retval = -1;
427
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
}
428
537
}
429
430
gnutls_transport_set_ptr (es.session,
431
(gnutls_transport_ptr_t) tcp_sd);
432
538
433
539
if(debug){
434
540
fprintf(stderr, "Establishing TLS session with %s\n", ip);
435
541
}
436
542
437
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);
438
548
439
549
if (ret != GNUTLS_E_SUCCESS){
440
550
if(debug){
441
fprintf(stderr, "\n*** Handshake failed ***\n");
551
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
442
552
gnutls_perror (ret);
443
553
}
444
554
retval = -1;
445
goto exit;
555
goto mandos_end;
446
556
}
447
557
448
//Retrieve OpenPGP packet that contains the wanted password
558
/* Read OpenPGP packet that contains the wanted password */
449
559
450
560
if(debug){
451
561
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
453
563
}
454
564
455
565
while(true){
456
if (buffer_length + BUFFER_SIZE > buffer_capacity){
457
buffer = realloc(buffer, buffer_capacity + BUFFER_SIZE);
458
if (buffer == NULL){
459
perror("realloc");
460
goto exit;
461
}
462
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;
463
572
}
464
573
465
ret = gnutls_record_recv
466
(es.session, buffer+buffer_length, BUFFER_SIZE);
574
ret = gnutls_record_recv(session, buffer+buffer_length,
575
BUFFER_SIZE);
467
576
if (ret == 0){
468
577
break;
469
578
}
473
582
case GNUTLS_E_AGAIN:
474
583
break;
475
584
case GNUTLS_E_REHANDSHAKE:
476
ret = gnutls_handshake (es.session);
585
do{
586
ret = gnutls_handshake (session);
587
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
477
588
if (ret < 0){
478
fprintf(stderr, "\n*** Handshake failed ***\n");
589
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
479
590
gnutls_perror (ret);
480
591
retval = -1;
481
goto exit;
592
goto mandos_end;
482
593
}
483
594
break;
484
595
default:
485
596
fprintf(stderr, "Unknown error while reading data from"
486
" encrypted session with mandos server\n");
597
" encrypted session with Mandos server\n");
487
598
retval = -1;
488
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
489
goto exit;
599
gnutls_bye (session, GNUTLS_SHUT_RDWR);
600
goto mandos_end;
490
601
}
491
602
} else {
492
603
buffer_length += (size_t) ret;
493
604
}
494
605
}
495
606
607
if(debug){
608
fprintf(stderr, "Closing TLS session\n");
609
}
610
611
gnutls_bye (session, GNUTLS_SHUT_RDWR);
612
496
613
if (buffer_length > 0){
497
614
decrypted_buffer_size = pgp_packet_decrypt(buffer,
498
615
buffer_length,
499
616
&decrypted_buffer,
500
certdir);
617
keydir);
501
618
if (decrypted_buffer_size >= 0){
619
written = 0;
502
620
while(written < (size_t) decrypted_buffer_size){
503
621
ret = (int)fwrite (decrypted_buffer + written, 1,
504
622
(size_t)decrypted_buffer_size - written,
517
635
} else {
518
636
retval = -1;
519
637
}
520
}
521
522
//shutdown procedure
523
524
if(debug){
525
fprintf(stderr, "Closing TLS session\n");
526
}
527
638
} else {
639
retval = -1;
640
}
641
642
/* Shutdown procedure */
643
644
mandos_end:
528
645
free(buffer);
529
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
530
exit:
531
646
close(tcp_sd);
532
gnutls_deinit (es.session);
533
gnutls_certificate_free_credentials (es.cred);
534
gnutls_global_deinit ();
647
gnutls_deinit (session);
535
648
return retval;
536
649
}
537
650
538
static void resolve_callback( AvahiSServiceResolver *r,
539
AvahiIfIndex interface,
540
AVAHI_GCC_UNUSED AvahiProtocol protocol,
541
AvahiResolverEvent event,
542
const char *name,
543
const char *type,
544
const char *domain,
545
const char *host_name,
546
const AvahiAddress *address,
547
uint16_t port,
548
AVAHI_GCC_UNUSED AvahiStringList *txt,
549
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
550
AVAHI_GCC_UNUSED void* userdata) {
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) {
551
665
mandos_context *mc = userdata;
552
assert(r); /* Spurious warning */
666
assert(r);
553
667
554
668
/* Called whenever a service has been resolved successfully or
555
669
timed out */
557
671
switch (event) {
558
672
default:
559
673
case AVAHI_RESOLVER_FAILURE:
560
fprintf(stderr, "(Resolver) Failed to resolve service '%s' of"
561
" type '%s' in domain '%s': %s\n", name, type, domain,
674
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
675
" of type '%s' in domain '%s': %s\n", name, type, domain,
562
676
avahi_strerror(avahi_server_errno(mc->server)));
563
677
break;
564
678
567
681
char ip[AVAHI_ADDRESS_STR_MAX];
568
682
avahi_address_snprint(ip, sizeof(ip), address);
569
683
if(debug){
570
fprintf(stderr, "Mandos server \"%s\" found on %s (%s) on"
571
" 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);
572
687
}
573
688
int ret = start_mandos_communication(ip, port, interface, mc);
574
689
if (ret == 0){
575
exit(EXIT_SUCCESS);
690
avahi_simple_poll_quit(mc->simple_poll);
576
691
}
577
692
}
578
693
}
586
701
const char *name,
587
702
const char *type,
588
703
const char *domain,
589
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
704
AVAHI_GCC_UNUSED AvahiLookupResultFlags
705
flags,
590
706
void* userdata) {
591
707
mandos_context *mc = userdata;
592
assert(b); /* Spurious warning */
708
assert(b);
593
709
594
710
/* Called whenever a new services becomes available on the LAN or
595
711
is removed from the LAN */
597
713
switch (event) {
598
714
default:
599
715
case AVAHI_BROWSER_FAILURE:
600
601
fprintf(stderr, "(Browser) %s\n",
716
717
fprintf(stderr, "(Avahi browser) %s\n",
602
718
avahi_strerror(avahi_server_errno(mc->server)));
603
719
avahi_simple_poll_quit(mc->simple_poll);
604
720
return;
605
721
606
722
case AVAHI_BROWSER_NEW:
607
/* We ignore the returned resolver object. In the callback
608
function we free it. If the server is terminated before
609
the callback function is called the server will free
610
the resolver for us. */
611
612
if (!(avahi_s_service_resolver_new(mc->server, interface, protocol, name,
613
type, domain,
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,
614
730
AVAHI_PROTO_INET6, 0,
615
731
resolve_callback, mc)))
616
fprintf(stderr, "Failed to resolve service '%s': %s\n", name,
617
avahi_strerror(avahi_server_errno(s)));
732
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
733
name, avahi_strerror(avahi_server_errno(mc->server)));
618
734
break;
619
735
620
736
case AVAHI_BROWSER_REMOVE:
621
737
break;
622
738
623
739
case AVAHI_BROWSER_ALL_FOR_NOW:
624
740
case AVAHI_BROWSER_CACHE_EXHAUSTED:
741
if(debug){
742
fprintf(stderr, "No Mandos server found, still searching...\n");
743
}
625
744
break;
626
745
}
627
746
}
628
747
629
748
/* Combines file name and path and returns the malloced new
630
749
string. some sane checks could/should be added */
631
static const char *combinepath(const char *first, const char *second){
632
size_t f_len = strlen(first);
633
size_t s_len = strlen(second);
634
char *tmp = malloc(f_len + s_len + 2);
635
if (tmp == NULL){
750
static char *combinepath(const char *first, const char *second){
751
char *tmp;
752
int ret = asprintf(&tmp, "%s/%s", first, second);
753
if(ret < 0){
636
754
return NULL;
637
755
}
638
if(f_len > 0){
639
memcpy(tmp, first, f_len);
640
}
641
tmp[f_len] = '/';
642
if(s_len > 0){
643
memcpy(tmp + f_len + 1, second, s_len);
644
}
645
tmp[f_len + 1 + s_len] = '\0';
646
756
return tmp;
647
757
}
648
758
649
759
650
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
651
AvahiServerConfig config;
760
int main(int argc, char *argv[]){
652
761
AvahiSServiceBrowser *sb = NULL;
653
762
int error;
654
763
int ret;
655
int returncode = EXIT_SUCCESS;
764
int exitcode = EXIT_SUCCESS;
656
765
const char *interface = "eth0";
657
766
struct ifreq network;
658
767
int sd;
768
uid_t uid;
769
gid_t gid;
659
770
char *connect_to = NULL;
660
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";
661
776
mandos_context mc = { .simple_poll = NULL, .server = NULL,
662
.dh_bits = 2048, .priority = "SECURE256"};
777
.dh_bits = 1024, .priority = "SECURE256"};
778
bool gnutls_initalized = false;
663
779
664
while (true){
665
static struct option long_options[] = {
666
{"debug", no_argument, (int *)&debug, 1},
667
{"connect", required_argument, 0, 'C'},
668
{"interface", required_argument, 0, 'i'},
669
{"certdir", required_argument, 0, 'd'},
670
{"certkey", required_argument, 0, 'c'},
671
{"certfile", required_argument, 0, 'k'},
672
{"dh_bits", required_argument, 0, 'D'},
673
{"priority", required_argument, 0, 'p'},
674
{0, 0, 0, 0} };
675
676
int option_index = 0;
677
ret = getopt_long (argc, argv, "i:", long_options,
678
&option_index);
679
680
if (ret == -1){
681
break;
682
}
683
684
switch(ret){
685
case 0:
686
break;
687
case 'i':
688
interface = optarg;
689
break;
690
case 'C':
691
connect_to = optarg;
692
break;
693
case 'd':
694
certdir = optarg;
695
break;
696
case 'c':
697
certfile = optarg;
698
break;
699
case 'k':
700
certkey = optarg;
701
break;
702
case 'D':
703
{
704
long int tmp;
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:
705
839
errno = 0;
706
tmp = strtol(optarg, NULL, 10);
707
if (errno == ERANGE){
840
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
841
if (errno){
708
842
perror("strtol");
709
843
exit(EXIT_FAILURE);
710
844
}
711
mc.dh_bits = tmp;
712
}
713
break;
714
case 'p':
715
mc.priority = optarg;
716
break;
717
default:
718
exit(EXIT_FAILURE);
719
}
720
}
721
722
certfile = combinepath(certdir, certfile);
723
if (certfile == NULL){
724
perror("combinepath");
725
returncode = EXIT_FAILURE;
726
goto exit;
727
}
728
729
certkey = combinepath(certdir, certkey);
730
if (certkey == NULL){
731
perror("combinepath");
732
returncode = EXIT_FAILURE;
733
goto exit;
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");
734
932
}
735
933
736
934
if_index = (AvahiIfIndex) if_nametoindex(interface);
745
943
char *address = strrchr(connect_to, ':');
746
944
if(address == NULL){
747
945
fprintf(stderr, "No colon in address\n");
748
exit(EXIT_FAILURE);
946
exitcode = EXIT_FAILURE;
947
goto end;
749
948
}
750
949
errno = 0;
751
950
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
752
951
if(errno){
753
952
perror("Bad port number");
754
exit(EXIT_FAILURE);
953
exitcode = EXIT_FAILURE;
954
goto end;
755
955
}
756
956
*address = '\0';
757
957
address = connect_to;
758
ret = start_mandos_communication(address, port, if_index);
958
ret = start_mandos_communication(address, port, if_index, &mc);
759
959
if(ret < 0){
760
exit(EXIT_FAILURE);
960
exitcode = EXIT_FAILURE;
761
961
} else {
762
exit(EXIT_SUCCESS);
763
}
764
}
765
766
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
767
if(sd < 0) {
768
perror("socket");
769
returncode = EXIT_FAILURE;
770
goto exit;
771
}
772
strcpy(network.ifr_name, interface);
773
ret = ioctl(sd, SIOCGIFFLAGS, &network);
774
if(ret == -1){
775
776
perror("ioctl SIOCGIFFLAGS");
777
returncode = EXIT_FAILURE;
778
goto exit;
779
}
780
if((network.ifr_flags & IFF_UP) == 0){
781
network.ifr_flags |= IFF_UP;
782
ret = ioctl(sd, SIOCSIFFLAGS, &network);
783
if(ret == -1){
784
perror("ioctl SIOCSIFFLAGS");
785
returncode = EXIT_FAILURE;
786
goto exit;
787
}
788
}
789
close(sd);
962
exitcode = EXIT_SUCCESS;
963
}
964
goto end;
965
}
790
966
791
967
if (not debug){
792
968
avahi_set_log_function(empty_log);
793
969
}
794
970
795
/* Initialize the psuedo-RNG */
971
/* Initialize the pseudo-RNG for Avahi */
796
972
srand((unsigned int) time(NULL));
797
798
/* Allocate main loop object */
799
if (!(mc.simple_poll = avahi_simple_poll_new())) {
800
fprintf(stderr, "Failed to create simple poll object.\n");
801
returncode = EXIT_FAILURE;
802
goto exit;
803
}
804
805
/* Do not publish any local records */
806
avahi_server_config_init(&config);
807
config.publish_hinfo = 0;
808
config.publish_addresses = 0;
809
config.publish_workstation = 0;
810
config.publish_domain = 0;
811
812
/* Allocate a new server */
813
mc.server = avahi_server_new(avahi_simple_poll_get(simple_poll),
814
&config, NULL, NULL, &error);
815
816
/* Free the configuration data */
817
avahi_server_config_free(&config);
818
819
/* Check if creating the server object succeeded */
820
if (!mc.server) {
821
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",
822
1004
avahi_strerror(error));
823
returncode = EXIT_FAILURE;
824
goto exit;
1005
exitcode = EXIT_FAILURE;
1006
goto end;
825
1007
}
826
1008
827
/* Create the service browser */
1009
/* Create the Avahi service browser */
828
1010
sb = avahi_s_service_browser_new(mc.server, if_index,
829
1011
AVAHI_PROTO_INET6,
830
1012
"_mandos._tcp", NULL, 0,
831
1013
browse_callback, &mc);
832
if (!sb) {
1014
if (sb == NULL) {
833
1015
fprintf(stderr, "Failed to create service browser: %s\n",
834
1016
avahi_strerror(avahi_server_errno(mc.server)));
835
returncode = EXIT_FAILURE;
836
goto exit;
1017
exitcode = EXIT_FAILURE;
1018
goto end;
837
1019
}
838
1020
839
1021
/* Run the main loop */
840
1022
841
1023
if (debug){
842
fprintf(stderr, "Starting avahi loop search\n");
1024
fprintf(stderr, "Starting Avahi loop search\n");
843
1025
}
844
1026
845
avahi_simple_poll_loop(simple_poll);
1027
avahi_simple_poll_loop(mc.simple_poll);
846
1028
847
exit:
1029
end:
848
1030
849
1031
if (debug){
850
1032
fprintf(stderr, "%s exiting\n", argv[0]);
851
1033
}
852
1034
853
1035
/* Cleanup things */
854
if (sb)
1036
if (sb != NULL)
855
1037
avahi_s_service_browser_free(sb);
856
1038
857
if (mc.server)
1039
if (mc.server != NULL)
858
1040
avahi_server_free(mc.server);
859
1041
860
if (simple_poll)
861
avahi_simple_poll_free(simple_poll);
862
free(certfile);
863
free(certkey);
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
}
864
1051
865
return returncode;
1052
return exitcode;
866
1053
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0