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- Committer: Teddy Hogeborn
- Date: 2008-08-02 10:48:24 UTC
- Revision ID: teddy@fukt.bsnet.se-20080802104824-fx0miwp9o4g9r31e
* plugbasedclient.c (struct process): New fields "eof", "completed",
and "status".
(handle_sigchld): New function.
(main): Initialize "dir" to NULL to only closedir() it if necessary.
Move "process_list" to be a global variable to be accessible
by "handle_sigchld". Make "handle_sigchld" handle SIGCHLD.
Remove redundant check for NULL "dir". Free "filename" when
no longer used. Block SIGCHLD around fork()/exec().
Restore normal signals in child. Only loop while running
processes exist. Print process buffer when the process is
done and it has emitted EOF, not when it only emits EOF.
Remove processes from list which exit non-cleanly. In
cleaning up, closedir() if necessary. Bug fix: set next
pointer correctly when freeing process list.
* plugins.d/passprompt.c (main): Do not ignore SIGQUIT.
and "status".
(handle_sigchld): New function.
(main): Initialize "dir" to NULL to only closedir() it if necessary.
Move "process_list" to be a global variable to be accessible
by "handle_sigchld". Make "handle_sigchld" handle SIGCHLD.
Remove redundant check for NULL "dir". Free "filename" when
no longer used. Block SIGCHLD around fork()/exec().
Restore normal signals in child. Only loop while running
processes exist. Print process buffer when the process is
done and it has emitted EOF, not when it only emits EOF.
Remove processes from list which exit non-cleanly. In
cleaning up, closedir() if necessary. Bug fix: set next
pointer correctly when freeing process list.
* plugins.d/passprompt.c (main): Do not ignore SIGQUIT.
- files added:
- ca.pem
- files removed:
- initramfs-tools-hook
- files renamed:
- mandos-client.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() */
36
37
#include <stdio.h> /* fprintf(), stderr, fwrite(), stdout,
38
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(), memcpy(), 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 functions
85
gnutls_*
86
init_gnutls_session(),
87
GNUTLS_* */
88
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
89
GNUTLS_OPENPGP_FMT_BASE64 */
90
91
/* GPGME */
92
#include <gpgme.h> /* All GPGME types, constants and functions
93
gpgme_*
94
GPGME_PROTOCOL_OpenPGP,
95
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>
96
68
97
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";
98
75
99
76
bool debug = false;
100
static const char *keydir = "/conf/conf.d/mandos";
101
static const char mandos_protocol_version[] = "1";
102
const char *argp_program_version = "password-request 1.0";
103
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
104
77
105
/* Used for passing in values through the Avahi callback functions */
106
78
typedef struct {
107
AvahiSimplePoll *simple_poll;
108
AvahiServer *server;
79
gnutls_session_t session;
109
80
gnutls_certificate_credentials_t cred;
110
unsigned int dh_bits;
111
81
gnutls_dh_params_t dh_params;
112
const char *priority;
113
} mandos_context;
114
115
/*
116
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
117
* "buffer_capacity" is how much is currently allocated,
118
* "buffer_length" is how much is already used.
119
*/
120
size_t adjustbuffer(char **buffer, size_t buffer_length,
121
size_t buffer_capacity){
122
if (buffer_length + BUFFER_SIZE > buffer_capacity){
123
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
124
if (buffer == NULL){
125
return 0;
126
}
127
buffer_capacity += BUFFER_SIZE;
128
}
129
return buffer_capacity;
130
}
131
132
/*
133
* Decrypt OpenPGP data using keyrings in HOMEDIR.
134
* Returns -1 on error
135
*/
136
static ssize_t pgp_packet_decrypt (const char *cryptotext,
137
size_t crypto_size,
138
char **plaintext,
139
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){
140
87
gpgme_data_t dh_crypto, dh_plain;
141
88
gpgme_ctx_t ctx;
142
89
gpgme_error_t rc;
143
90
ssize_t ret;
144
size_t plaintext_capacity = 0;
145
ssize_t plaintext_length = 0;
91
ssize_t new_packet_capacity = 0;
92
ssize_t new_packet_length = 0;
146
93
gpgme_engine_info_t engine_info;
147
94
148
95
if (debug){
149
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
96
fprintf(stderr, "Trying to decrypt OpenPGP packet\n");
150
97
}
151
98
152
99
/* Init GPGME */
158
105
return -1;
159
106
}
160
107
161
/* Set GPGME home directory for the OpenPGP engine only */
108
/* Set GPGME home directory */
162
109
rc = gpgme_get_engine_info (&engine_info);
163
110
if (rc != GPG_ERR_NO_ERROR){
164
111
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
174
121
engine_info = engine_info->next;
175
122
}
176
123
if(engine_info == NULL){
177
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
124
fprintf(stderr, "Could not set home dir to %s\n", homedir);
178
125
return -1;
179
126
}
180
127
181
/* Create new GPGME data buffer from memory cryptotext */
182
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
183
0);
128
/* Create new GPGME data buffer from packet buffer */
129
rc = gpgme_data_new_from_mem(&dh_crypto, packet, packet_size, 0);
184
130
if (rc != GPG_ERR_NO_ERROR){
185
131
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
186
132
gpgme_strsource(rc), gpgme_strerror(rc));
192
138
if (rc != GPG_ERR_NO_ERROR){
193
139
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
194
140
gpgme_strsource(rc), gpgme_strerror(rc));
195
gpgme_data_release(dh_crypto);
196
141
return -1;
197
142
}
198
143
201
146
if (rc != GPG_ERR_NO_ERROR){
202
147
fprintf(stderr, "bad gpgme_new: %s: %s\n",
203
148
gpgme_strsource(rc), gpgme_strerror(rc));
204
plaintext_length = -1;
205
goto decrypt_end;
149
return -1;
206
150
}
207
151
208
/* Decrypt data from the cryptotext data buffer to the plaintext
209
data buffer */
152
/* Decrypt data from the FILE pointer to the plaintext data
153
buffer */
210
154
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
211
155
if (rc != GPG_ERR_NO_ERROR){
212
156
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
213
157
gpgme_strsource(rc), gpgme_strerror(rc));
214
plaintext_length = -1;
215
goto decrypt_end;
158
return -1;
216
159
}
217
160
218
161
if(debug){
219
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
162
fprintf(stderr, "Decryption of OpenPGP packet succeeded\n");
220
163
}
221
164
222
165
if (debug){
223
166
gpgme_decrypt_result_t result;
224
167
result = gpgme_op_decrypt_result(ctx);
227
170
} else {
228
171
fprintf(stderr, "Unsupported algorithm: %s\n",
229
172
result->unsupported_algorithm);
230
fprintf(stderr, "Wrong key usage: %u\n",
173
fprintf(stderr, "Wrong key usage: %d\n",
231
174
result->wrong_key_usage);
232
175
if(result->file_name != NULL){
233
176
fprintf(stderr, "File name: %s\n", result->file_name);
248
191
}
249
192
}
250
193
194
/* Delete the GPGME FILE pointer cryptotext data buffer */
195
gpgme_data_release(dh_crypto);
196
251
197
/* Seek back to the beginning of the GPGME plaintext data buffer */
252
198
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
253
199
perror("pgpme_data_seek");
254
plaintext_length = -1;
255
goto decrypt_end;
256
200
}
257
201
258
*plaintext = NULL;
202
*new_packet = 0;
259
203
while(true){
260
plaintext_capacity = adjustbuffer(plaintext,
261
(size_t)plaintext_length,
262
plaintext_capacity);
263
if (plaintext_capacity == 0){
264
perror("adjustbuffer");
265
plaintext_length = -1;
266
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;
267
213
}
268
214
269
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
215
ret = gpgme_data_read(dh_plain, *new_packet + new_packet_length,
270
216
BUFFER_SIZE);
271
217
/* Print the data, if any */
272
218
if (ret == 0){
273
/* EOF */
274
219
break;
275
220
}
276
221
if(ret < 0){
277
222
perror("gpgme_data_read");
278
plaintext_length = -1;
279
goto decrypt_end;
223
return -1;
280
224
}
281
plaintext_length += ret;
225
new_packet_length += ret;
282
226
}
283
227
284
if(debug){
285
fprintf(stderr, "Decrypted password is: ");
286
for(ssize_t i = 0; i < plaintext_length; i++){
287
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
288
}
289
fprintf(stderr, "\n");
290
}
291
292
decrypt_end:
293
294
/* Delete the GPGME cryptotext data buffer */
295
gpgme_data_release(dh_crypto);
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
/* } */
296
235
297
236
/* Delete the GPGME plaintext data buffer */
298
237
gpgme_data_release(dh_plain);
299
return plaintext_length;
238
return new_packet_length;
300
239
}
301
240
302
241
static const char * safer_gnutls_strerror (int value) {
306
245
return ret;
307
246
}
308
247
309
/* GnuTLS log function callback */
310
static void debuggnutls(__attribute__((unused)) int level,
311
const char* string){
312
fprintf(stderr, "GnuTLS: %s", string);
248
void debuggnutls(__attribute__((unused)) int level,
249
const char* string){
250
fprintf(stderr, "%s", string);
313
251
}
314
252
315
static int init_gnutls_global(mandos_context *mc,
316
const char *pubkeyfile,
317
const char *seckeyfile){
253
int initgnutls(encrypted_session *es){
254
const char *err;
318
255
int ret;
319
256
320
257
if(debug){
321
258
fprintf(stderr, "Initializing GnuTLS\n");
322
259
}
323
324
ret = gnutls_global_init();
325
if (ret != GNUTLS_E_SUCCESS) {
326
fprintf (stderr, "GnuTLS global_init: %s\n",
327
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));
328
264
return -1;
329
265
}
330
266
331
267
if (debug){
332
/* "Use a log level over 10 to enable all debugging options."
333
* - GnuTLS manual
334
*/
335
268
gnutls_global_set_log_level(11);
336
269
gnutls_global_set_log_function(debuggnutls);
337
270
}
338
271
339
/* OpenPGP credentials */
340
gnutls_certificate_allocate_credentials(&mc->cred);
341
if (ret != GNUTLS_E_SUCCESS){
342
fprintf (stderr, "GnuTLS memory error: %s\n",
272
/* openpgp credentials */
273
if ((ret = gnutls_certificate_allocate_credentials (&es->cred))
274
!= GNUTLS_E_SUCCESS) {
275
fprintf (stderr, "memory error: %s\n",
343
276
safer_gnutls_strerror(ret));
344
gnutls_global_deinit ();
345
277
return -1;
346
278
}
347
279
348
280
if(debug){
349
281
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
350
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
351
seckeyfile);
282
" and keyfile %s as GnuTLS credentials\n", certfile,
283
certkey);
352
284
}
353
285
354
286
ret = gnutls_certificate_set_openpgp_key_file
355
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
287
(es->cred, certfile, certkey, GNUTLS_OPENPGP_FMT_BASE64);
356
288
if (ret != GNUTLS_E_SUCCESS) {
357
fprintf(stderr,
358
"Error[%d] while reading the OpenPGP key pair ('%s',"
359
" '%s')\n", ret, pubkeyfile, seckeyfile);
360
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",
361
294
safer_gnutls_strerror(ret));
362
goto globalfail;
363
}
364
365
/* GnuTLS server initialization */
366
ret = gnutls_dh_params_init(&mc->dh_params);
367
if (ret != GNUTLS_E_SUCCESS) {
368
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
369
" %s\n", safer_gnutls_strerror(ret));
370
goto globalfail;
371
}
372
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
373
if (ret != GNUTLS_E_SUCCESS) {
374
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
375
safer_gnutls_strerror(ret));
376
goto globalfail;
377
}
378
379
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
380
381
return 0;
382
383
globalfail:
384
385
gnutls_certificate_free_credentials(mc->cred);
386
gnutls_global_deinit();
387
return -1;
388
389
}
390
391
static int init_gnutls_session(mandos_context *mc,
392
gnutls_session_t *session){
393
int ret;
394
/* GnuTLS session creation */
395
ret = gnutls_init(session, GNUTLS_SERVER);
396
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){
397
318
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
398
319
safer_gnutls_strerror(ret));
399
320
}
400
321
401
{
402
const char *err;
403
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
404
if (ret != GNUTLS_E_SUCCESS) {
405
fprintf(stderr, "Syntax error at: %s\n", err);
406
fprintf(stderr, "GnuTLS error: %s\n",
407
safer_gnutls_strerror(ret));
408
gnutls_deinit (*session);
409
return -1;
410
}
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;
411
328
}
412
329
413
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
414
mc->cred);
415
if (ret != GNUTLS_E_SUCCESS) {
416
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",
417
334
safer_gnutls_strerror(ret));
418
gnutls_deinit (*session);
419
335
return -1;
420
336
}
421
337
422
338
/* ignore client certificate if any. */
423
gnutls_certificate_server_set_request (*session,
339
gnutls_certificate_server_set_request (es->session,
424
340
GNUTLS_CERT_IGNORE);
425
341
426
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
342
gnutls_dh_set_prime_bits (es->session, DH_BITS);
427
343
428
344
return 0;
429
345
}
430
346
431
/* Avahi log function callback */
432
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
433
__attribute__((unused)) const char *txt){}
347
void empty_log(__attribute__((unused)) AvahiLogLevel level,
348
__attribute__((unused)) const char *txt){}
434
349
435
/* Called when a Mandos server is found */
436
static int start_mandos_communication(const char *ip, uint16_t port,
437
AvahiIfIndex if_index,
438
mandos_context *mc){
350
int start_mandos_communication(const char *ip, uint16_t port,
351
AvahiIfIndex if_index){
439
352
int ret, tcp_sd;
440
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
353
struct sockaddr_in6 to;
354
encrypted_session es;
441
355
char *buffer = NULL;
442
356
char *decrypted_buffer;
443
357
size_t buffer_length = 0;
444
358
size_t buffer_capacity = 0;
445
359
ssize_t decrypted_buffer_size;
446
size_t written;
360
size_t written = 0;
447
361
int retval = 0;
448
362
char interface[IF_NAMESIZE];
449
gnutls_session_t session;
450
451
ret = init_gnutls_session (mc, &session);
452
if (ret != 0){
453
return -1;
454
}
455
363
456
364
if(debug){
457
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
458
"\n", ip, port);
365
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
366
ip, port);
459
367
}
460
368
461
369
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
463
371
perror("socket");
464
372
return -1;
465
373
}
466
467
if(debug){
468
if(if_indextoname((unsigned int)if_index, interface) == NULL){
374
375
if(if_indextoname((unsigned int)if_index, interface) == NULL){
376
if(debug){
469
377
perror("if_indextoname");
470
return -1;
471
378
}
379
return -1;
380
}
381
382
if(debug){
472
383
fprintf(stderr, "Binding to interface %s\n", interface);
473
384
}
474
385
475
386
memset(&to,0,sizeof(to)); /* Spurious warning */
476
to.in6.sin6_family = AF_INET6;
477
/* It would be nice to have a way to detect if we were passed an
478
IPv4 address here. Now we assume an IPv6 address. */
479
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
387
to.sin6_family = AF_INET6;
388
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
480
389
if (ret < 0 ){
481
390
perror("inet_pton");
482
391
return -1;
483
}
392
}
484
393
if(ret == 0){
485
394
fprintf(stderr, "Bad address: %s\n", ip);
486
395
return -1;
487
396
}
488
to.in6.sin6_port = htons(port); /* Spurious warning */
397
to.sin6_port = htons(port); /* Spurious warning */
489
398
490
to.in6.sin6_scope_id = (uint32_t)if_index;
399
to.sin6_scope_id = (uint32_t)if_index;
491
400
492
401
if(debug){
493
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
494
port);
495
char addrstr[INET6_ADDRSTRLEN] = "";
496
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
497
sizeof(addrstr)) == NULL){
498
perror("inet_ntop");
499
} else {
500
if(strcmp(addrstr, ip) != 0){
501
fprintf(stderr, "Canonical address form: %s\n", addrstr);
502
}
503
}
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
/* } */
504
411
}
505
412
506
ret = connect(tcp_sd, &to.in, sizeof(to));
413
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
507
414
if (ret < 0){
508
415
perror("connect");
509
416
return -1;
510
417
}
511
512
const char *out = mandos_protocol_version;
513
written = 0;
514
while (true){
515
size_t out_size = strlen(out);
516
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
517
out_size - written));
518
if (ret == -1){
519
perror("write");
520
retval = -1;
521
goto mandos_end;
522
}
523
written += (size_t)ret;
524
if(written < out_size){
525
continue;
526
} else {
527
if (out == mandos_protocol_version){
528
written = 0;
529
out = "\r\n";
530
} else {
531
break;
532
}
533
}
418
419
ret = initgnutls (&es);
420
if (ret != 0){
421
retval = -1;
422
return -1;
534
423
}
535
424
425
gnutls_transport_set_ptr (es.session,
426
(gnutls_transport_ptr_t) tcp_sd);
427
536
428
if(debug){
537
429
fprintf(stderr, "Establishing TLS session with %s\n", ip);
538
430
}
539
431
540
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
541
542
do{
543
ret = gnutls_handshake (session);
544
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
432
ret = gnutls_handshake (es.session);
545
433
546
434
if (ret != GNUTLS_E_SUCCESS){
547
435
if(debug){
548
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
436
fprintf(stderr, "\n*** Handshake failed ***\n");
549
437
gnutls_perror (ret);
550
438
}
551
439
retval = -1;
552
goto mandos_end;
440
goto exit;
553
441
}
554
442
555
/* Read OpenPGP packet that contains the wanted password */
443
//Retrieve OpenPGP packet that contains the wanted password
556
444
557
445
if(debug){
558
446
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
560
448
}
561
449
562
450
while(true){
563
buffer_capacity = adjustbuffer(&buffer, buffer_length,
564
buffer_capacity);
565
if (buffer_capacity == 0){
566
perror("adjustbuffer");
567
retval = -1;
568
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;
569
458
}
570
459
571
ret = gnutls_record_recv(session, buffer+buffer_length,
572
BUFFER_SIZE);
460
ret = gnutls_record_recv
461
(es.session, buffer+buffer_length, BUFFER_SIZE);
573
462
if (ret == 0){
574
463
break;
575
464
}
579
468
case GNUTLS_E_AGAIN:
580
469
break;
581
470
case GNUTLS_E_REHANDSHAKE:
582
do{
583
ret = gnutls_handshake (session);
584
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
471
ret = gnutls_handshake (es.session);
585
472
if (ret < 0){
586
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
473
fprintf(stderr, "\n*** Handshake failed ***\n");
587
474
gnutls_perror (ret);
588
475
retval = -1;
589
goto mandos_end;
476
goto exit;
590
477
}
591
478
break;
592
479
default:
593
480
fprintf(stderr, "Unknown error while reading data from"
594
" encrypted session with Mandos server\n");
481
" encrypted session with mandos server\n");
595
482
retval = -1;
596
gnutls_bye (session, GNUTLS_SHUT_RDWR);
597
goto mandos_end;
483
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
484
goto exit;
598
485
}
599
486
} else {
600
487
buffer_length += (size_t) ret;
601
488
}
602
489
}
603
490
604
if(debug){
605
fprintf(stderr, "Closing TLS session\n");
606
}
607
608
gnutls_bye (session, GNUTLS_SHUT_RDWR);
609
610
491
if (buffer_length > 0){
611
492
decrypted_buffer_size = pgp_packet_decrypt(buffer,
612
493
buffer_length,
613
494
&decrypted_buffer,
614
keydir);
495
certdir);
615
496
if (decrypted_buffer_size >= 0){
616
written = 0;
617
497
while(written < (size_t) decrypted_buffer_size){
618
498
ret = (int)fwrite (decrypted_buffer + written, 1,
619
499
(size_t)decrypted_buffer_size - written,
633
513
retval = -1;
634
514
}
635
515
}
636
637
/* Shutdown procedure */
638
639
mandos_end:
516
517
//shutdown procedure
518
519
if(debug){
520
fprintf(stderr, "Closing TLS session\n");
521
}
522
640
523
free(buffer);
524
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
525
exit:
641
526
close(tcp_sd);
642
gnutls_deinit (session);
527
gnutls_deinit (es.session);
528
gnutls_certificate_free_credentials (es.cred);
529
gnutls_global_deinit ();
643
530
return retval;
644
531
}
645
532
646
static void resolve_callback(AvahiSServiceResolver *r,
647
AvahiIfIndex interface,
648
AVAHI_GCC_UNUSED AvahiProtocol protocol,
649
AvahiResolverEvent event,
650
const char *name,
651
const char *type,
652
const char *domain,
653
const char *host_name,
654
const AvahiAddress *address,
655
uint16_t port,
656
AVAHI_GCC_UNUSED AvahiStringList *txt,
657
AVAHI_GCC_UNUSED AvahiLookupResultFlags
658
flags,
659
void* userdata) {
660
mandos_context *mc = userdata;
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
661
551
assert(r); /* Spurious warning */
662
552
663
553
/* Called whenever a service has been resolved successfully or
666
556
switch (event) {
667
557
default:
668
558
case AVAHI_RESOLVER_FAILURE:
669
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
670
" of type '%s' in domain '%s': %s\n", name, type, domain,
671
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)));
672
562
break;
673
563
674
564
case AVAHI_RESOLVER_FOUND:
676
566
char ip[AVAHI_ADDRESS_STR_MAX];
677
567
avahi_address_snprint(ip, sizeof(ip), address);
678
568
if(debug){
679
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
680
PRIu16 ") on port %d\n", name, host_name, ip,
681
interface, port);
569
fprintf(stderr, "Mandos server \"%s\" found on %s (%s) on"
570
" port %d\n", name, host_name, ip, port);
682
571
}
683
int ret = start_mandos_communication(ip, port, interface, mc);
572
int ret = start_mandos_communication(ip, port, interface);
684
573
if (ret == 0){
685
avahi_simple_poll_quit(mc->simple_poll);
574
exit(EXIT_SUCCESS);
686
575
}
687
576
}
688
577
}
689
578
avahi_s_service_resolver_free(r);
690
579
}
691
580
692
static void browse_callback( AvahiSServiceBrowser *b,
693
AvahiIfIndex interface,
694
AvahiProtocol protocol,
695
AvahiBrowserEvent event,
696
const char *name,
697
const char *type,
698
const char *domain,
699
AVAHI_GCC_UNUSED AvahiLookupResultFlags
700
flags,
701
void* userdata) {
702
mandos_context *mc = userdata;
703
assert(b); /* Spurious warning */
704
705
/* Called whenever a new services becomes available on the LAN or
706
is removed from the LAN */
707
708
switch (event) {
709
default:
710
case AVAHI_BROWSER_FAILURE:
711
712
fprintf(stderr, "(Avahi browser) %s\n",
713
avahi_strerror(avahi_server_errno(mc->server)));
714
avahi_simple_poll_quit(mc->simple_poll);
715
return;
716
717
case AVAHI_BROWSER_NEW:
718
/* We ignore the returned Avahi resolver object. In the callback
719
function we free it. If the Avahi server is terminated before
720
the callback function is called the Avahi server will free the
721
resolver for us. */
722
723
if (!(avahi_s_service_resolver_new(mc->server, interface,
724
protocol, name, type, domain,
725
AVAHI_PROTO_INET6, 0,
726
resolve_callback, mc)))
727
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
728
name, avahi_strerror(avahi_server_errno(mc->server)));
729
break;
730
731
case AVAHI_BROWSER_REMOVE:
732
break;
733
734
case AVAHI_BROWSER_ALL_FOR_NOW:
735
case AVAHI_BROWSER_CACHE_EXHAUSTED:
736
if(debug){
737
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;
738
627
}
739
break;
740
}
741
628
}
742
629
743
/* Combines file name and path and returns the malloced new
744
string. some sane checks could/should be added */
745
static const char *combinepath(const char *first, const char *second){
746
size_t f_len = strlen(first);
747
size_t s_len = strlen(second);
748
char *tmp = malloc(f_len + s_len + 2);
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){
632
char *tmp;
633
tmp = malloc(strlen(first) + strlen(second) + 2);
749
634
if (tmp == NULL){
635
perror("malloc");
750
636
return NULL;
751
637
}
752
if(f_len > 0){
753
memcpy(tmp, first, f_len); /* Spurious warning */
754
}
755
tmp[f_len] = '/';
756
if(s_len > 0){
757
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
758
}
759
tmp[f_len + 1 + s_len] = '\0';
638
strcpy(tmp, first);
639
if (first[0] != '\0' and first[strlen(first) - 1] != '/'){
640
strcat(tmp, "/");
641
}
642
strcat(tmp, second);
760
643
return tmp;
761
644
}
762
645
763
646
764
int main(int argc, char *argv[]){
647
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
648
AvahiServerConfig config;
765
649
AvahiSServiceBrowser *sb = NULL;
766
650
int error;
767
651
int ret;
768
int exitcode = EXIT_SUCCESS;
769
const char *interface = "eth0";
770
struct ifreq network;
771
int sd;
772
uid_t uid;
773
gid_t gid;
652
int returncode = EXIT_SUCCESS;
653
const char *interface = NULL;
654
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
774
655
char *connect_to = NULL;
775
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
776
const char *pubkeyfile = "pubkey.txt";
777
const char *seckeyfile = "seckey.txt";
778
mandos_context mc = { .simple_poll = NULL, .server = NULL,
779
.dh_bits = 1024, .priority = "SECURE256"};
780
bool gnutls_initalized = false;
781
782
{
783
struct argp_option options[] = {
784
{ .name = "debug", .key = 128,
785
.doc = "Debug mode", .group = 3 },
786
{ .name = "connect", .key = 'c',
787
.arg = "IP",
788
.doc = "Connect directly to a sepcified mandos server",
789
.group = 1 },
790
{ .name = "interface", .key = 'i',
791
.arg = "INTERFACE",
792
.doc = "Interface that Avahi will conntect through",
793
.group = 1 },
794
{ .name = "keydir", .key = 'd',
795
.arg = "KEYDIR",
796
.doc = "Directory where the openpgp keyring is",
797
.group = 1 },
798
{ .name = "seckey", .key = 's',
799
.arg = "SECKEY",
800
.doc = "Secret openpgp key for gnutls authentication",
801
.group = 1 },
802
{ .name = "pubkey", .key = 'p',
803
.arg = "PUBKEY",
804
.doc = "Public openpgp key for gnutls authentication",
805
.group = 2 },
806
{ .name = "dh-bits", .key = 129,
807
.arg = "BITS",
808
.doc = "dh-bits to use in gnutls communication",
809
.group = 2 },
810
{ .name = "priority", .key = 130,
811
.arg = "PRIORITY",
812
.doc = "GNUTLS priority", .group = 1 },
813
{ .name = NULL }
814
};
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:
823
debug = true;
824
break;
825
case 'c':
826
connect_to = arg;
827
break;
828
case 'i':
829
interface = arg;
830
break;
831
case 'd':
832
keydir = arg;
833
break;
834
case 's':
835
seckeyfile = arg;
836
break;
837
case 'p':
838
pubkeyfile = arg;
839
break;
840
case 129:
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:
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 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
pubkeyfile = combinepath(keydir, pubkeyfile);
874
if (pubkeyfile == NULL){
875
perror("combinepath");
876
exitcode = EXIT_FAILURE;
877
goto end;
878
}
879
880
seckeyfile = combinepath(keydir, seckeyfile);
881
if (seckeyfile == NULL){
882
perror("combinepath");
883
exitcode = EXIT_FAILURE;
884
goto end;
885
}
886
887
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
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); /* Spurious warning */
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);
794
avahi_simple_poll_loop(simple_poll);
1030
795
1031
end:
796
exit:
1032
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(pubkeyfile);
1047
free(seckeyfile);
1048
1049
if (gnutls_initalized){
1050
gnutls_certificate_free_credentials(mc.cred);
1051
gnutls_global_deinit ();
1052
}
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);
1053
813
1054
return exitcode;
814
return returncode;
1055
815
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0