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- Committer: Teddy Hogeborn
- Date: 2008-08-16 03:29:08 UTC
- Revision ID: teddy@fukt.bsnet.se-20080816032908-ihw7c05r2mnyk389
Add feature to specify custom environment variables for plugins.
* plugin-runner.c (plugin): New members "environ" and "envc" to
contain possible custom environment.
(getplugin): Return NULL on failure instead of doing exit(); all
callers changed.
(add_to_char_array): New helper function for "add_argument" and
"add_environment".
(addargument): Renamed to "add_argument". Return bool. Call
"add_to_char_array" to actually do things.
(add_environment): New; analogous to "add_argument".
(addcustomargument): Renamed to "add_to_argv" to avoid confusion
with "add_argument".
(main): New options "--global-envs" and "--envs-for" to specify
custom environment for plugins. Print environment for
plugins in debug mode. Use asprintf instead of strcpy and
strcat. Use execve() for plugins with custom environments.
Free environment for plugin when freeing plugin list.
* plugin-runner.c (plugin): New members "environ" and "envc" to
contain possible custom environment.
(getplugin): Return NULL on failure instead of doing exit(); all
callers changed.
(add_to_char_array): New helper function for "add_argument" and
"add_environment".
(addargument): Renamed to "add_argument". Return bool. Call
"add_to_char_array" to actually do things.
(add_environment): New; analogous to "add_argument".
(addcustomargument): Renamed to "add_to_argv" to avoid confusion
with "add_argument".
(main): New options "--global-envs" and "--envs-for" to specify
custom environment for plugins. Print environment for
plugins in debug mode. Use asprintf instead of strcpy and
strcat. Use execve() for plugins with custom environments.
Free environment for plugin when freeing plugin list.
- files added:
- COPYING
- 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
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_* */
41
76
#include <avahi-core/core.h>
42
77
#include <avahi-core/lookup.h>
43
78
#include <avahi-core/log.h>
45
80
#include <avahi-common/malloc.h>
46
81
#include <avahi-common/error.h>
47
82
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>
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_* */
68
98
69
99
#define BUFFER_SIZE 256
70
100
71
static int dh_bits = 1024;
72
101
bool debug = false;
73
102
static const char *keydir = "/conf/conf.d/mandos";
74
static const char *pubkeyfile = "pubkey.txt";
75
static const char *seckeyfile = "seckey.txt";
76
77
bool debug = false;
78
79
/* Used for */
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
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
static ssize_t pgp_packet_decrypt (char *packet, size_t packet_size,
88
char **new_packet,
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,
89
141
const char *homedir){
90
142
gpgme_data_t dh_crypto, dh_plain;
91
143
gpgme_ctx_t ctx;
92
144
gpgme_error_t rc;
93
145
ssize_t ret;
94
ssize_t new_packet_capacity = 0;
95
ssize_t new_packet_length = 0;
146
size_t plaintext_capacity = 0;
147
ssize_t plaintext_length = 0;
96
148
gpgme_engine_info_t engine_info;
97
149
98
150
if (debug){
99
fprintf(stderr, "Trying to decrypt OpenPGP packet\n");
151
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
100
152
}
101
153
102
154
/* Init GPGME */
108
160
return -1;
109
161
}
110
162
111
/* Set GPGME home directory */
163
/* Set GPGME home directory for the OpenPGP engine only */
112
164
rc = gpgme_get_engine_info (&engine_info);
113
165
if (rc != GPG_ERR_NO_ERROR){
114
166
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
124
176
engine_info = engine_info->next;
125
177
}
126
178
if(engine_info == NULL){
127
fprintf(stderr, "Could not set home dir to %s\n", homedir);
179
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
128
180
return -1;
129
181
}
130
182
131
/* Create new GPGME data buffer from packet buffer */
132
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);
133
186
if (rc != GPG_ERR_NO_ERROR){
134
187
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
135
188
gpgme_strsource(rc), gpgme_strerror(rc));
141
194
if (rc != GPG_ERR_NO_ERROR){
142
195
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
143
196
gpgme_strsource(rc), gpgme_strerror(rc));
197
gpgme_data_release(dh_crypto);
144
198
return -1;
145
199
}
146
200
149
203
if (rc != GPG_ERR_NO_ERROR){
150
204
fprintf(stderr, "bad gpgme_new: %s: %s\n",
151
205
gpgme_strsource(rc), gpgme_strerror(rc));
152
return -1;
206
plaintext_length = -1;
207
goto decrypt_end;
153
208
}
154
209
155
/* Decrypt data from the FILE pointer to the plaintext data
156
buffer */
210
/* Decrypt data from the cryptotext data buffer to the plaintext
211
data buffer */
157
212
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
158
213
if (rc != GPG_ERR_NO_ERROR){
159
214
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
160
215
gpgme_strsource(rc), gpgme_strerror(rc));
161
return -1;
216
plaintext_length = -1;
217
goto decrypt_end;
162
218
}
163
219
164
220
if(debug){
165
fprintf(stderr, "Decryption of OpenPGP packet succeeded\n");
221
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
166
222
}
167
223
168
224
if (debug){
169
225
gpgme_decrypt_result_t result;
170
226
result = gpgme_op_decrypt_result(ctx);
173
229
} else {
174
230
fprintf(stderr, "Unsupported algorithm: %s\n",
175
231
result->unsupported_algorithm);
176
fprintf(stderr, "Wrong key usage: %d\n",
232
fprintf(stderr, "Wrong key usage: %u\n",
177
233
result->wrong_key_usage);
178
234
if(result->file_name != NULL){
179
235
fprintf(stderr, "File name: %s\n", result->file_name);
194
250
}
195
251
}
196
252
197
/* Delete the GPGME FILE pointer cryptotext data buffer */
198
gpgme_data_release(dh_crypto);
199
200
253
/* Seek back to the beginning of the GPGME plaintext data buffer */
201
254
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
202
255
perror("pgpme_data_seek");
256
plaintext_length = -1;
257
goto decrypt_end;
203
258
}
204
259
205
*new_packet = 0;
260
*plaintext = NULL;
206
261
while(true){
207
if (new_packet_length + BUFFER_SIZE > new_packet_capacity){
208
*new_packet = realloc(*new_packet,
209
(unsigned int)new_packet_capacity
210
+ BUFFER_SIZE);
211
if (*new_packet == NULL){
212
perror("realloc");
213
return -1;
214
}
215
new_packet_capacity += BUFFER_SIZE;
262
plaintext_capacity = adjustbuffer(plaintext,
263
(size_t)plaintext_length,
264
plaintext_capacity);
265
if (plaintext_capacity == 0){
266
perror("adjustbuffer");
267
plaintext_length = -1;
268
goto decrypt_end;
216
269
}
217
270
218
ret = gpgme_data_read(dh_plain, *new_packet + new_packet_length,
271
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
219
272
BUFFER_SIZE);
220
273
/* Print the data, if any */
221
274
if (ret == 0){
275
/* EOF */
222
276
break;
223
277
}
224
278
if(ret < 0){
225
279
perror("gpgme_data_read");
226
return -1;
280
plaintext_length = -1;
281
goto decrypt_end;
227
282
}
228
new_packet_length += ret;
283
plaintext_length += ret;
229
284
}
230
285
231
/* FIXME: check characters before printing to screen so to not print
232
terminal control characters */
233
/* if(debug){ */
234
/* fprintf(stderr, "decrypted password is: "); */
235
/* fwrite(*new_packet, 1, new_packet_length, stderr); */
236
/* fprintf(stderr, "\n"); */
237
/* } */
286
if(debug){
287
fprintf(stderr, "Decrypted password is: ");
288
for(ssize_t i = 0; i < plaintext_length; i++){
289
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
290
}
291
fprintf(stderr, "\n");
292
}
293
294
decrypt_end:
295
296
/* Delete the GPGME cryptotext data buffer */
297
gpgme_data_release(dh_crypto);
238
298
239
299
/* Delete the GPGME plaintext data buffer */
240
300
gpgme_data_release(dh_plain);
241
return new_packet_length;
301
return plaintext_length;
242
302
}
243
303
244
304
static const char * safer_gnutls_strerror (int value) {
248
308
return ret;
249
309
}
250
310
311
/* GnuTLS log function callback */
251
312
static void debuggnutls(__attribute__((unused)) int level,
252
313
const char* string){
253
fprintf(stderr, "%s", string);
314
fprintf(stderr, "GnuTLS: %s", string);
254
315
}
255
316
256
static int initgnutls(encrypted_session *es){
257
const char *err;
317
static int init_gnutls_global(mandos_context *mc,
318
const char *pubkeyfilename,
319
const char *seckeyfilename){
258
320
int ret;
259
321
260
322
if(debug){
261
323
fprintf(stderr, "Initializing GnuTLS\n");
262
324
}
263
264
if ((ret = gnutls_global_init ())
265
!= GNUTLS_E_SUCCESS) {
266
fprintf (stderr, "global_init: %s\n", safer_gnutls_strerror(ret));
325
326
ret = gnutls_global_init();
327
if (ret != GNUTLS_E_SUCCESS) {
328
fprintf (stderr, "GnuTLS global_init: %s\n",
329
safer_gnutls_strerror(ret));
267
330
return -1;
268
331
}
269
332
270
333
if (debug){
334
/* "Use a log level over 10 to enable all debugging options."
335
* - GnuTLS manual
336
*/
271
337
gnutls_global_set_log_level(11);
272
338
gnutls_global_set_log_function(debuggnutls);
273
339
}
274
340
275
/* openpgp credentials */
276
if ((ret = gnutls_certificate_allocate_credentials (&es->cred))
277
!= GNUTLS_E_SUCCESS) {
278
fprintf (stderr, "memory error: %s\n",
341
/* OpenPGP credentials */
342
gnutls_certificate_allocate_credentials(&mc->cred);
343
if (ret != GNUTLS_E_SUCCESS){
344
fprintf (stderr, "GnuTLS memory error: %s\n",
279
345
safer_gnutls_strerror(ret));
346
gnutls_global_deinit ();
280
347
return -1;
281
348
}
282
349
283
350
if(debug){
284
351
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
285
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
286
seckeyfile);
352
" and keyfile %s as GnuTLS credentials\n", pubkeyfilename,
353
seckeyfilename);
287
354
}
288
355
289
356
ret = gnutls_certificate_set_openpgp_key_file
290
(es->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
357
(mc->cred, pubkeyfilename, seckeyfilename,
358
GNUTLS_OPENPGP_FMT_BASE64);
291
359
if (ret != GNUTLS_E_SUCCESS) {
292
fprintf
293
(stderr, "Error[%d] while reading the OpenPGP key pair ('%s',"
294
" '%s')\n",
295
ret, pubkeyfile, seckeyfile);
296
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",
297
364
safer_gnutls_strerror(ret));
298
return -1;
299
}
300
301
//GnuTLS server initialization
302
if ((ret = gnutls_dh_params_init (&es->dh_params))
303
!= GNUTLS_E_SUCCESS) {
304
fprintf (stderr, "Error in dh parameter initialization: %s\n",
305
safer_gnutls_strerror(ret));
306
return -1;
307
}
308
309
if ((ret = gnutls_dh_params_generate2 (es->dh_params, dh_bits))
310
!= GNUTLS_E_SUCCESS) {
311
fprintf (stderr, "Error in prime generation: %s\n",
312
safer_gnutls_strerror(ret));
313
return -1;
314
}
315
316
gnutls_certificate_set_dh_params (es->cred, es->dh_params);
317
318
// GnuTLS session creation
319
if ((ret = gnutls_init (&es->session, GNUTLS_SERVER))
320
!= 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){
321
400
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
322
401
safer_gnutls_strerror(ret));
323
402
}
324
403
325
if ((ret = gnutls_priority_set_direct (es->session, "NORMAL", &err))
326
!= GNUTLS_E_SUCCESS) {
327
fprintf(stderr, "Syntax error at: %s\n", err);
328
fprintf(stderr, "GnuTLS error: %s\n",
329
safer_gnutls_strerror(ret));
330
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
}
331
414
}
332
415
333
if ((ret = gnutls_credentials_set
334
(es->session, GNUTLS_CRD_CERTIFICATE, es->cred))
335
!= GNUTLS_E_SUCCESS) {
336
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",
337
420
safer_gnutls_strerror(ret));
421
gnutls_deinit (*session);
338
422
return -1;
339
423
}
340
424
341
425
/* ignore client certificate if any. */
342
gnutls_certificate_server_set_request (es->session,
426
gnutls_certificate_server_set_request (*session,
343
427
GNUTLS_CERT_IGNORE);
344
428
345
gnutls_dh_set_prime_bits (es->session, dh_bits);
429
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
346
430
347
431
return 0;
348
432
}
349
433
434
/* Avahi log function callback */
350
435
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
351
436
__attribute__((unused)) const char *txt){}
352
437
438
/* Called when a Mandos server is found */
353
439
static int start_mandos_communication(const char *ip, uint16_t port,
354
AvahiIfIndex if_index){
440
AvahiIfIndex if_index,
441
mandos_context *mc){
355
442
int ret, tcp_sd;
356
struct sockaddr_in6 to;
357
encrypted_session es;
443
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
358
444
char *buffer = NULL;
359
445
char *decrypted_buffer;
360
446
size_t buffer_length = 0;
361
447
size_t buffer_capacity = 0;
362
448
ssize_t decrypted_buffer_size;
363
size_t written = 0;
449
size_t written;
364
450
int retval = 0;
365
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
}
366
458
367
459
if(debug){
368
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
369
ip, port);
460
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
461
"\n", ip, port);
370
462
}
371
463
372
464
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
374
466
perror("socket");
375
467
return -1;
376
468
}
377
378
if(if_indextoname((unsigned int)if_index, interface) == NULL){
379
if(debug){
469
470
if(debug){
471
if(if_indextoname((unsigned int)if_index, interface) == NULL){
380
472
perror("if_indextoname");
473
return -1;
381
474
}
382
return -1;
383
}
384
385
if(debug){
386
475
fprintf(stderr, "Binding to interface %s\n", interface);
387
476
}
388
477
389
memset(&to,0,sizeof(to)); /* Spurious warning */
390
to.sin6_family = AF_INET6;
391
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
478
memset(&to, 0, sizeof(to)); /* Spurious warning */
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);
392
483
if (ret < 0 ){
393
484
perror("inet_pton");
394
485
return -1;
395
}
486
}
396
487
if(ret == 0){
397
488
fprintf(stderr, "Bad address: %s\n", ip);
398
489
return -1;
399
490
}
400
to.sin6_port = htons(port); /* Spurious warning */
491
to.in6.sin6_port = htons(port); /* Spurious warning */
401
492
402
to.sin6_scope_id = (uint32_t)if_index;
493
to.in6.sin6_scope_id = (uint32_t)if_index;
403
494
404
495
if(debug){
405
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
496
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
497
port);
406
498
char addrstr[INET6_ADDRSTRLEN] = "";
407
if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr,
499
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
408
500
sizeof(addrstr)) == NULL){
409
501
perror("inet_ntop");
410
502
} else {
411
503
if(strcmp(addrstr, ip) != 0){
412
fprintf(stderr, "Canonical address form: %s\n",
413
addrstr, ntohs(to.sin6_port));
504
fprintf(stderr, "Canonical address form: %s\n", addrstr);
414
505
}
415
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
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,
518
636
retval = -1;
519
637
}
520
638
}
521
522
//shutdown procedure
523
524
if(debug){
525
fprintf(stderr, "Closing TLS session\n");
526
}
527
639
640
/* Shutdown procedure */
641
642
mandos_end:
528
643
free(buffer);
529
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
530
exit:
531
644
close(tcp_sd);
532
gnutls_deinit (es.session);
533
gnutls_certificate_free_credentials (es.cred);
534
gnutls_global_deinit ();
645
gnutls_deinit (session);
535
646
return retval;
536
647
}
537
648
538
static AvahiSimplePoll *simple_poll = NULL;
539
static AvahiServer *server = NULL;
540
541
static void resolve_callback(
542
AvahiSServiceResolver *r,
543
AvahiIfIndex interface,
544
AVAHI_GCC_UNUSED AvahiProtocol protocol,
545
AvahiResolverEvent event,
546
const char *name,
547
const char *type,
548
const char *domain,
549
const char *host_name,
550
const AvahiAddress *address,
551
uint16_t port,
552
AVAHI_GCC_UNUSED AvahiStringList *txt,
553
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
554
AVAHI_GCC_UNUSED void* userdata) {
555
649
static void resolve_callback(AvahiSServiceResolver *r,
650
AvahiIfIndex interface,
651
AVAHI_GCC_UNUSED AvahiProtocol protocol,
652
AvahiResolverEvent event,
653
const char *name,
654
const char *type,
655
const char *domain,
656
const char *host_name,
657
const AvahiAddress *address,
658
uint16_t port,
659
AVAHI_GCC_UNUSED AvahiStringList *txt,
660
AVAHI_GCC_UNUSED AvahiLookupResultFlags
661
flags,
662
void* userdata) {
663
mandos_context *mc = userdata;
556
664
assert(r); /* Spurious warning */
557
665
558
666
/* Called whenever a service has been resolved successfully or
561
669
switch (event) {
562
670
default:
563
671
case AVAHI_RESOLVER_FAILURE:
564
fprintf(stderr, "(Resolver) Failed to resolve service '%s' of"
565
" type '%s' in domain '%s': %s\n", name, type, domain,
566
avahi_strerror(avahi_server_errno(server)));
672
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
673
" of type '%s' in domain '%s': %s\n", name, type, domain,
674
avahi_strerror(avahi_server_errno(mc->server)));
567
675
break;
568
676
569
677
case AVAHI_RESOLVER_FOUND:
571
679
char ip[AVAHI_ADDRESS_STR_MAX];
572
680
avahi_address_snprint(ip, sizeof(ip), address);
573
681
if(debug){
574
fprintf(stderr, "Mandos server \"%s\" found on %s (%s) on"
575
" port %d\n", name, host_name, ip, port);
682
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
683
PRIu16 ") on port %d\n", name, host_name, ip,
684
interface, port);
576
685
}
577
int ret = start_mandos_communication(ip, port, interface);
686
int ret = start_mandos_communication(ip, port, interface, mc);
578
687
if (ret == 0){
579
exit(EXIT_SUCCESS);
688
avahi_simple_poll_quit(mc->simple_poll);
580
689
}
581
690
}
582
691
}
583
692
avahi_s_service_resolver_free(r);
584
693
}
585
694
586
static void browse_callback(
587
AvahiSServiceBrowser *b,
588
AvahiIfIndex interface,
589
AvahiProtocol protocol,
590
AvahiBrowserEvent event,
591
const char *name,
592
const char *type,
593
const char *domain,
594
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
595
void* userdata) {
596
597
AvahiServer *s = userdata;
598
assert(b); /* Spurious warning */
599
600
/* Called whenever a new services becomes available on the LAN or
601
is removed from the LAN */
602
603
switch (event) {
604
default:
605
case AVAHI_BROWSER_FAILURE:
606
607
fprintf(stderr, "(Browser) %s\n",
608
avahi_strerror(avahi_server_errno(server)));
609
avahi_simple_poll_quit(simple_poll);
610
return;
611
612
case AVAHI_BROWSER_NEW:
613
/* We ignore the returned resolver object. In the callback
614
function we free it. If the server is terminated before
615
the callback function is called the server will free
616
the resolver for us. */
617
618
if (!(avahi_s_service_resolver_new(s, interface, protocol, name,
619
type, domain,
620
AVAHI_PROTO_INET6, 0,
621
resolve_callback, s)))
622
fprintf(stderr, "Failed to resolve service '%s': %s\n", name,
623
avahi_strerror(avahi_server_errno(s)));
624
break;
625
626
case AVAHI_BROWSER_REMOVE:
627
break;
628
629
case AVAHI_BROWSER_ALL_FOR_NOW:
630
case AVAHI_BROWSER_CACHE_EXHAUSTED:
631
break;
695
static void browse_callback( AvahiSServiceBrowser *b,
696
AvahiIfIndex interface,
697
AvahiProtocol protocol,
698
AvahiBrowserEvent event,
699
const char *name,
700
const char *type,
701
const char *domain,
702
AVAHI_GCC_UNUSED AvahiLookupResultFlags
703
flags,
704
void* userdata) {
705
mandos_context *mc = userdata;
706
assert(b); /* Spurious warning */
707
708
/* Called whenever a new services becomes available on the LAN or
709
is removed from the LAN */
710
711
switch (event) {
712
default:
713
case AVAHI_BROWSER_FAILURE:
714
715
fprintf(stderr, "(Avahi browser) %s\n",
716
avahi_strerror(avahi_server_errno(mc->server)));
717
avahi_simple_poll_quit(mc->simple_poll);
718
return;
719
720
case AVAHI_BROWSER_NEW:
721
/* We ignore the returned Avahi resolver object. In the callback
722
function we free it. If the Avahi server is terminated before
723
the callback function is called the Avahi server will free the
724
resolver for us. */
725
726
if (!(avahi_s_service_resolver_new(mc->server, interface,
727
protocol, name, type, domain,
728
AVAHI_PROTO_INET6, 0,
729
resolve_callback, mc)))
730
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
731
name, avahi_strerror(avahi_server_errno(mc->server)));
732
break;
733
734
case AVAHI_BROWSER_REMOVE:
735
break;
736
737
case AVAHI_BROWSER_ALL_FOR_NOW:
738
case AVAHI_BROWSER_CACHE_EXHAUSTED:
739
if(debug){
740
fprintf(stderr, "No Mandos server found, still searching...\n");
632
741
}
742
break;
743
}
633
744
}
634
745
635
746
/* Combines file name and path and returns the malloced new
636
747
string. some sane checks could/should be added */
637
static const char *combinepath(const char *first, const char *second){
638
size_t f_len = strlen(first);
639
size_t s_len = strlen(second);
640
char *tmp = malloc(f_len + s_len + 2);
641
if (tmp == NULL){
748
static char *combinepath(const char *first, const char *second){
749
char *tmp;
750
int ret = asprintf(&tmp, "%s/%s", first, second);
751
if(ret < 0){
642
752
return NULL;
643
753
}
644
if(f_len > 0){
645
memcpy(tmp, first, f_len);
646
}
647
tmp[f_len] = '/';
648
if(s_len > 0){
649
memcpy(tmp + f_len + 1, second, s_len);
650
}
651
tmp[f_len + 1 + s_len] = '\0';
652
754
return tmp;
653
755
}
654
756
655
757
656
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
657
AvahiServerConfig config;
758
int main(int argc, char *argv[]){
658
759
AvahiSServiceBrowser *sb = NULL;
659
760
int error;
660
761
int ret;
661
int debug_int = 0;
662
int returncode = EXIT_SUCCESS;
663
const char *interface = NULL;
762
int exitcode = EXIT_SUCCESS;
763
const char *interface = "eth0";
764
struct ifreq network;
765
int sd;
766
uid_t uid;
767
gid_t gid;
768
char *connect_to = NULL;
664
769
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
665
char *connect_to = NULL;
666
667
debug_int = debug ? 1 : 0;
668
while (true){
669
static struct option long_options[] = {
670
{"debug", no_argument, &debug_int, 1},
671
{"connect", required_argument, NULL, 'C'},
672
{"interface", required_argument, NULL, 'i'},
673
{"keydir", required_argument, NULL, 'd'},
674
{"seckey", required_argument, NULL, 'c'},
675
{"pubkey", required_argument, NULL, 'k'},
676
{"dh-bits", required_argument, NULL, 'D'},
677
{0, 0, 0, 0} };
678
679
int option_index = 0;
680
ret = getopt_long (argc, argv, "i:", long_options,
681
&option_index);
682
683
if (ret == -1){
684
break;
685
}
686
687
switch(ret){
688
case 0:
689
break;
690
case 'i':
691
interface = optarg;
692
break;
693
case 'C':
694
connect_to = optarg;
695
break;
696
case 'd':
697
keydir = optarg;
698
break;
699
case 'c':
700
pubkeyfile = optarg;
701
break;
702
case 'k':
703
seckeyfile = optarg;
704
break;
705
case 'D':
706
dh_bits = atoi(optarg);
707
break;
708
case '?':
709
break
710
default:
711
exit(EXIT_FAILURE);
712
}
713
}
714
debug = debug_int ? true : false;
715
716
pubkeyfile = combinepath(keydir, pubkeyfile);
717
if (pubkeyfile == NULL){
718
perror("combinepath");
719
goto exit;
720
}
721
722
if(interface != NULL){
723
if_index = (AvahiIfIndex) if_nametoindex(interface);
724
if(if_index == 0){
725
fprintf(stderr, "No such interface: \"%s\"\n", interface);
726
exit(EXIT_FAILURE);
727
}
770
char *pubkeyfilename = NULL;
771
char *seckeyfilename = NULL;
772
const char *pubkeyname = "pubkey.txt";
773
const char *seckeyname = "seckey.txt";
774
mandos_context mc = { .simple_poll = NULL, .server = NULL,
775
.dh_bits = 1024, .priority = "SECURE256"};
776
bool gnutls_initalized = false;
777
778
{
779
struct argp_option options[] = {
780
{ .name = "debug", .key = 128,
781
.doc = "Debug mode", .group = 3 },
782
{ .name = "connect", .key = 'c',
783
.arg = "IP",
784
.doc = "Connect directly to a sepcified mandos server",
785
.group = 1 },
786
{ .name = "interface", .key = 'i',
787
.arg = "INTERFACE",
788
.doc = "Interface that Avahi will conntect through",
789
.group = 1 },
790
{ .name = "keydir", .key = 'd',
791
.arg = "KEYDIR",
792
.doc = "Directory where the openpgp keyring is",
793
.group = 1 },
794
{ .name = "seckey", .key = 's',
795
.arg = "SECKEY",
796
.doc = "Secret openpgp key for gnutls authentication",
797
.group = 1 },
798
{ .name = "pubkey", .key = 'p',
799
.arg = "PUBKEY",
800
.doc = "Public openpgp key for gnutls authentication",
801
.group = 2 },
802
{ .name = "dh-bits", .key = 129,
803
.arg = "BITS",
804
.doc = "dh-bits to use in gnutls communication",
805
.group = 2 },
806
{ .name = "priority", .key = 130,
807
.arg = "PRIORITY",
808
.doc = "GNUTLS priority", .group = 1 },
809
{ .name = NULL }
810
};
811
812
813
error_t parse_opt (int key, char *arg,
814
struct argp_state *state) {
815
/* Get the INPUT argument from `argp_parse', which we know is
816
a pointer to our plugin list pointer. */
817
switch (key) {
818
case 128:
819
debug = true;
820
break;
821
case 'c':
822
connect_to = arg;
823
break;
824
case 'i':
825
interface = arg;
826
break;
827
case 'd':
828
keydir = arg;
829
break;
830
case 's':
831
seckeyname = arg;
832
break;
833
case 'p':
834
pubkeyname = arg;
835
break;
836
case 129:
837
errno = 0;
838
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
839
if (errno){
840
perror("strtol");
841
exit(EXIT_FAILURE);
842
}
843
break;
844
case 130:
845
mc.priority = arg;
846
break;
847
case ARGP_KEY_ARG:
848
argp_usage (state);
849
case ARGP_KEY_END:
850
break;
851
default:
852
return ARGP_ERR_UNKNOWN;
853
}
854
return 0;
855
}
856
857
struct argp argp = { .options = options, .parser = parse_opt,
858
.args_doc = "",
859
.doc = "Mandos client -- Get and decrypt"
860
" passwords from mandos server" };
861
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
862
if (ret == ARGP_ERR_UNKNOWN){
863
fprintf(stderr, "Unknown error while parsing arguments\n");
864
exitcode = EXIT_FAILURE;
865
goto end;
866
}
867
}
868
869
pubkeyfilename = combinepath(keydir, pubkeyname);
870
if (pubkeyfilename == NULL){
871
perror("combinepath");
872
exitcode = EXIT_FAILURE;
873
goto end;
874
}
875
876
seckeyfilename = combinepath(keydir, seckeyname);
877
if (seckeyfilename == NULL){
878
perror("combinepath");
879
exitcode = EXIT_FAILURE;
880
goto end;
881
}
882
883
ret = init_gnutls_global(&mc, pubkeyfilename, seckeyfilename);
884
if (ret == -1){
885
fprintf(stderr, "init_gnutls_global failed\n");
886
exitcode = EXIT_FAILURE;
887
goto end;
888
} else {
889
gnutls_initalized = true;
890
}
891
892
/* If the interface is down, bring it up */
893
{
894
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
895
if(sd < 0) {
896
perror("socket");
897
exitcode = EXIT_FAILURE;
898
goto end;
899
}
900
strcpy(network.ifr_name, interface); /* Spurious warning */
901
ret = ioctl(sd, SIOCGIFFLAGS, &network);
902
if(ret == -1){
903
perror("ioctl SIOCGIFFLAGS");
904
exitcode = EXIT_FAILURE;
905
goto end;
906
}
907
if((network.ifr_flags & IFF_UP) == 0){
908
network.ifr_flags |= IFF_UP;
909
ret = ioctl(sd, SIOCSIFFLAGS, &network);
910
if(ret == -1){
911
perror("ioctl SIOCSIFFLAGS");
912
exitcode = EXIT_FAILURE;
913
goto end;
914
}
915
}
916
close(sd);
917
}
918
919
uid = getuid();
920
gid = getgid();
921
922
ret = setuid(uid);
923
if (ret == -1){
924
perror("setuid");
925
}
926
927
setgid(gid);
928
if (ret == -1){
929
perror("setgid");
930
}
931
932
if_index = (AvahiIfIndex) if_nametoindex(interface);
933
if(if_index == 0){
934
fprintf(stderr, "No such interface: \"%s\"\n", interface);
935
exit(EXIT_FAILURE);
728
936
}
729
937
730
938
if(connect_to != NULL){
733
941
char *address = strrchr(connect_to, ':');
734
942
if(address == NULL){
735
943
fprintf(stderr, "No colon in address\n");
736
exit(EXIT_FAILURE);
944
exitcode = EXIT_FAILURE;
945
goto end;
737
946
}
738
947
errno = 0;
739
948
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
740
949
if(errno){
741
950
perror("Bad port number");
742
exit(EXIT_FAILURE);
951
exitcode = EXIT_FAILURE;
952
goto end;
743
953
}
744
954
*address = '\0';
745
955
address = connect_to;
746
ret = start_mandos_communication(address, port, if_index);
956
ret = start_mandos_communication(address, port, if_index, &mc);
747
957
if(ret < 0){
748
exit(EXIT_FAILURE);
958
exitcode = EXIT_FAILURE;
749
959
} else {
750
exit(EXIT_SUCCESS);
960
exitcode = EXIT_SUCCESS;
751
961
}
752
}
753
754
seckeyfile = combinepath(keydir, seckeyfile);
755
if (seckeyfile == NULL){
756
perror("combinepath");
757
goto exit;
962
goto end;
758
963
}
759
964
760
965
if (not debug){
761
966
avahi_set_log_function(empty_log);
762
967
}
763
968
764
/* Initialize the psuedo-RNG */
969
/* Initialize the pseudo-RNG for Avahi */
765
970
srand((unsigned int) time(NULL));
766
767
/* Allocate main loop object */
768
if (!(simple_poll = avahi_simple_poll_new())) {
769
fprintf(stderr, "Failed to create simple poll object.\n");
770
771
goto exit;
772
}
773
774
/* Do not publish any local records */
775
avahi_server_config_init(&config);
776
config.publish_hinfo = 0;
777
config.publish_addresses = 0;
778
config.publish_workstation = 0;
779
config.publish_domain = 0;
780
781
/* Allocate a new server */
782
server = avahi_server_new(avahi_simple_poll_get(simple_poll),
783
&config, NULL, NULL, &error);
784
785
/* Free the configuration data */
786
avahi_server_config_free(&config);
787
788
/* Check if creating the server object succeeded */
789
if (!server) {
790
fprintf(stderr, "Failed to create server: %s\n",
971
972
/* Allocate main Avahi loop object */
973
mc.simple_poll = avahi_simple_poll_new();
974
if (mc.simple_poll == NULL) {
975
fprintf(stderr, "Avahi: Failed to create simple poll"
976
" object.\n");
977
exitcode = EXIT_FAILURE;
978
goto end;
979
}
980
981
{
982
AvahiServerConfig config;
983
/* Do not publish any local Zeroconf records */
984
avahi_server_config_init(&config);
985
config.publish_hinfo = 0;
986
config.publish_addresses = 0;
987
config.publish_workstation = 0;
988
config.publish_domain = 0;
989
990
/* Allocate a new server */
991
mc.server = avahi_server_new(avahi_simple_poll_get
992
(mc.simple_poll), &config, NULL,
993
NULL, &error);
994
995
/* Free the Avahi configuration data */
996
avahi_server_config_free(&config);
997
}
998
999
/* Check if creating the Avahi server object succeeded */
1000
if (mc.server == NULL) {
1001
fprintf(stderr, "Failed to create Avahi server: %s\n",
791
1002
avahi_strerror(error));
792
returncode = EXIT_FAILURE;
793
goto exit;
1003
exitcode = EXIT_FAILURE;
1004
goto end;
794
1005
}
795
1006
796
/* Create the service browser */
797
sb = avahi_s_service_browser_new(server, if_index,
1007
/* Create the Avahi service browser */
1008
sb = avahi_s_service_browser_new(mc.server, if_index,
798
1009
AVAHI_PROTO_INET6,
799
1010
"_mandos._tcp", NULL, 0,
800
browse_callback, server);
801
if (!sb) {
1011
browse_callback, &mc);
1012
if (sb == NULL) {
802
1013
fprintf(stderr, "Failed to create service browser: %s\n",
803
avahi_strerror(avahi_server_errno(server)));
804
returncode = EXIT_FAILURE;
805
goto exit;
1014
avahi_strerror(avahi_server_errno(mc.server)));
1015
exitcode = EXIT_FAILURE;
1016
goto end;
806
1017
}
807
1018
808
1019
/* Run the main loop */
809
1020
810
1021
if (debug){
811
fprintf(stderr, "Starting avahi loop search\n");
1022
fprintf(stderr, "Starting Avahi loop search\n");
812
1023
}
813
1024
814
avahi_simple_poll_loop(simple_poll);
1025
avahi_simple_poll_loop(mc.simple_poll);
815
1026
816
exit:
1027
end:
817
1028
818
1029
if (debug){
819
1030
fprintf(stderr, "%s exiting\n", argv[0]);
820
1031
}
821
1032
822
1033
/* Cleanup things */
823
if (sb)
1034
if (sb != NULL)
824
1035
avahi_s_service_browser_free(sb);
825
1036
826
if (server)
827
avahi_server_free(server);
828
829
if (simple_poll)
830
avahi_simple_poll_free(simple_poll);
831
free(pubkeyfile);
832
free(seckeyfile);
1037
if (mc.server != NULL)
1038
avahi_server_free(mc.server);
1039
1040
if (mc.simple_poll != NULL)
1041
avahi_simple_poll_free(mc.simple_poll);
1042
free(pubkeyfilename);
1043
free(seckeyfilename);
1044
1045
if (gnutls_initalized){
1046
gnutls_certificate_free_credentials(mc.cred);
1047
gnutls_global_deinit ();
1048
}
833
1049
834
return returncode;
1050
return exitcode;
835
1051
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0