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24.1.55
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: plugins.d/password-request.c
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- Committer: Björn Påhlsson
- Date: 2008-08-16 20:31:21 UTC
- mto: (237.7.1 mandos) (24.1.154 mandos)
- mto: This revision was merged to the branch mainline in revision 80.
- Revision ID: belorn@braxen-20080816203121-u3uavdi14y1xjj0b
updated some partial manual pages
- 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
#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
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", certfile,
286
certkey);
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, certfile, certkey, 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, certfile, certkey);
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);
377
469
378
470
if(debug){
379
471
if(if_indextoname((unsigned int)if_index, interface) == NULL){
380
if(debug){
381
perror("if_indextoname");
382
}
472
perror("if_indextoname");
383
473
return -1;
384
474
}
385
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);
406
/* char addrstr[INET6_ADDRSTRLEN]; */
407
/* if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr, */
408
/* sizeof(addrstr)) == NULL){ */
409
/* perror("inet_ntop"); */
410
/* } else { */
411
/* fprintf(stderr, "Really connecting to: %s, port %d\n", */
412
/* addrstr, ntohs(to.sin6_port)); */
413
/* } */
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
}
414
507
}
415
508
416
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
509
ret = connect(tcp_sd, &to.in, sizeof(to));
417
510
if (ret < 0){
418
511
perror("connect");
419
512
return -1;
420
513
}
421
422
ret = initgnutls (&es);
423
if (ret != 0){
424
retval = -1;
425
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
}
426
537
}
427
428
gnutls_transport_set_ptr (es.session,
429
(gnutls_transport_ptr_t) tcp_sd);
430
538
431
539
if(debug){
432
540
fprintf(stderr, "Establishing TLS session with %s\n", ip);
433
541
}
434
542
435
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);
436
548
437
549
if (ret != GNUTLS_E_SUCCESS){
438
550
if(debug){
439
fprintf(stderr, "\n*** Handshake failed ***\n");
551
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
440
552
gnutls_perror (ret);
441
553
}
442
554
retval = -1;
443
goto exit;
555
goto mandos_end;
444
556
}
445
557
446
//Retrieve OpenPGP packet that contains the wanted password
558
/* Read OpenPGP packet that contains the wanted password */
447
559
448
560
if(debug){
449
561
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
451
563
}
452
564
453
565
while(true){
454
if (buffer_length + BUFFER_SIZE > buffer_capacity){
455
buffer = realloc(buffer, buffer_capacity + BUFFER_SIZE);
456
if (buffer == NULL){
457
perror("realloc");
458
goto exit;
459
}
460
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;
461
572
}
462
573
463
ret = gnutls_record_recv
464
(es.session, buffer+buffer_length, BUFFER_SIZE);
574
ret = gnutls_record_recv(session, buffer+buffer_length,
575
BUFFER_SIZE);
465
576
if (ret == 0){
466
577
break;
467
578
}
471
582
case GNUTLS_E_AGAIN:
472
583
break;
473
584
case GNUTLS_E_REHANDSHAKE:
474
ret = gnutls_handshake (es.session);
585
do{
586
ret = gnutls_handshake (session);
587
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
475
588
if (ret < 0){
476
fprintf(stderr, "\n*** Handshake failed ***\n");
589
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
477
590
gnutls_perror (ret);
478
591
retval = -1;
479
goto exit;
592
goto mandos_end;
480
593
}
481
594
break;
482
595
default:
483
596
fprintf(stderr, "Unknown error while reading data from"
484
" encrypted session with mandos server\n");
597
" encrypted session with Mandos server\n");
485
598
retval = -1;
486
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
487
goto exit;
599
gnutls_bye (session, GNUTLS_SHUT_RDWR);
600
goto mandos_end;
488
601
}
489
602
} else {
490
603
buffer_length += (size_t) ret;
491
604
}
492
605
}
493
606
607
if(debug){
608
fprintf(stderr, "Closing TLS session\n");
609
}
610
611
gnutls_bye (session, GNUTLS_SHUT_RDWR);
612
494
613
if (buffer_length > 0){
495
614
decrypted_buffer_size = pgp_packet_decrypt(buffer,
496
615
buffer_length,
497
616
&decrypted_buffer,
498
certdir);
617
keydir);
499
618
if (decrypted_buffer_size >= 0){
619
written = 0;
500
620
while(written < (size_t) decrypted_buffer_size){
501
621
ret = (int)fwrite (decrypted_buffer + written, 1,
502
622
(size_t)decrypted_buffer_size - written,
516
636
retval = -1;
517
637
}
518
638
}
519
520
//shutdown procedure
521
522
if(debug){
523
fprintf(stderr, "Closing TLS session\n");
524
}
525
639
640
/* Shutdown procedure */
641
642
mandos_end:
526
643
free(buffer);
527
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
528
exit:
529
644
close(tcp_sd);
530
gnutls_deinit (es.session);
531
gnutls_certificate_free_credentials (es.cred);
532
gnutls_global_deinit ();
645
gnutls_deinit (session);
533
646
return retval;
534
647
}
535
648
536
static AvahiSimplePoll *simple_poll = NULL;
537
static AvahiServer *server = NULL;
538
539
static void resolve_callback(
540
AvahiSServiceResolver *r,
541
AvahiIfIndex interface,
542
AVAHI_GCC_UNUSED AvahiProtocol protocol,
543
AvahiResolverEvent event,
544
const char *name,
545
const char *type,
546
const char *domain,
547
const char *host_name,
548
const AvahiAddress *address,
549
uint16_t port,
550
AVAHI_GCC_UNUSED AvahiStringList *txt,
551
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
552
AVAHI_GCC_UNUSED void* userdata) {
553
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;
554
664
assert(r); /* Spurious warning */
555
665
556
666
/* Called whenever a service has been resolved successfully or
559
669
switch (event) {
560
670
default:
561
671
case AVAHI_RESOLVER_FAILURE:
562
fprintf(stderr, "(Resolver) Failed to resolve service '%s' of"
563
" type '%s' in domain '%s': %s\n", name, type, domain,
564
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)));
565
675
break;
566
676
567
677
case AVAHI_RESOLVER_FOUND:
569
679
char ip[AVAHI_ADDRESS_STR_MAX];
570
680
avahi_address_snprint(ip, sizeof(ip), address);
571
681
if(debug){
572
fprintf(stderr, "Mandos server \"%s\" found on %s (%s) on"
573
" 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);
574
685
}
575
int ret = start_mandos_communication(ip, port, interface);
686
int ret = start_mandos_communication(ip, port, interface, mc);
576
687
if (ret == 0){
577
exit(EXIT_SUCCESS);
688
avahi_simple_poll_quit(mc->simple_poll);
578
689
}
579
690
}
580
691
}
581
692
avahi_s_service_resolver_free(r);
582
693
}
583
694
584
static void browse_callback(
585
AvahiSServiceBrowser *b,
586
AvahiIfIndex interface,
587
AvahiProtocol protocol,
588
AvahiBrowserEvent event,
589
const char *name,
590
const char *type,
591
const char *domain,
592
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
593
void* userdata) {
594
595
AvahiServer *s = userdata;
596
assert(b); /* Spurious warning */
597
598
/* Called whenever a new services becomes available on the LAN or
599
is removed from the LAN */
600
601
switch (event) {
602
default:
603
case AVAHI_BROWSER_FAILURE:
604
605
fprintf(stderr, "(Browser) %s\n",
606
avahi_strerror(avahi_server_errno(server)));
607
avahi_simple_poll_quit(simple_poll);
608
return;
609
610
case AVAHI_BROWSER_NEW:
611
/* We ignore the returned resolver object. In the callback
612
function we free it. If the server is terminated before
613
the callback function is called the server will free
614
the resolver for us. */
615
616
if (!(avahi_s_service_resolver_new(s, interface, protocol, name,
617
type, domain,
618
AVAHI_PROTO_INET6, 0,
619
resolve_callback, s)))
620
fprintf(stderr, "Failed to resolve service '%s': %s\n", name,
621
avahi_strerror(avahi_server_errno(s)));
622
break;
623
624
case AVAHI_BROWSER_REMOVE:
625
break;
626
627
case AVAHI_BROWSER_ALL_FOR_NOW:
628
case AVAHI_BROWSER_CACHE_EXHAUSTED:
629
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");
630
741
}
742
break;
743
}
631
744
}
632
745
633
746
/* Combines file name and path and returns the malloced new
634
747
string. some sane checks could/should be added */
635
static const char *combinepath(const char *first, const char *second){
636
size_t f_len = strlen(first);
637
size_t s_len = strlen(second);
638
char *tmp = malloc(f_len + s_len + 2);
639
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){
640
752
return NULL;
641
753
}
642
if(f_len > 0){
643
memcpy(tmp, first, f_len);
644
}
645
tmp[f_len] = '/';
646
if(s_len > 0){
647
memcpy(tmp + f_len + 1, second, s_len);
648
}
649
tmp[f_len + 1 + s_len] = '\0';
650
754
return tmp;
651
755
}
652
756
653
757
654
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
655
AvahiServerConfig config;
758
int main(int argc, char *argv[]){
656
759
AvahiSServiceBrowser *sb = NULL;
657
760
int error;
658
761
int ret;
659
int returncode = EXIT_SUCCESS;
762
int exitcode = EXIT_SUCCESS;
660
763
const char *interface = "eth0";
661
764
struct ifreq network;
662
765
int sd;
766
uid_t uid;
767
gid_t gid;
663
768
char *connect_to = NULL;
664
769
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
665
666
while (true){
667
static struct option long_options[] = {
668
{"debug", no_argument, (int *)&debug, 1},
669
{"connect", required_argument, 0, 'C'},
670
{"interface", required_argument, 0, 'i'},
671
{"certdir", required_argument, 0, 'd'},
672
{"certkey", required_argument, 0, 'c'},
673
{"certfile", required_argument, 0, 'k'},
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
default:
703
exit(EXIT_FAILURE);
704
}
705
}
706
707
certfile = combinepath(certdir, certfile);
708
if (certfile == NULL){
709
perror("combinepath");
710
returncode = EXIT_FAILURE;
711
goto exit;
712
}
713
714
certkey = combinepath(certdir, certkey);
715
if (certkey == NULL){
716
perror("combinepath");
717
returncode = EXIT_FAILURE;
718
goto exit;
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");
719
930
}
720
931
721
932
if_index = (AvahiIfIndex) if_nametoindex(interface);
730
941
char *address = strrchr(connect_to, ':');
731
942
if(address == NULL){
732
943
fprintf(stderr, "No colon in address\n");
733
exit(EXIT_FAILURE);
944
exitcode = EXIT_FAILURE;
945
goto end;
734
946
}
735
947
errno = 0;
736
948
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
737
949
if(errno){
738
950
perror("Bad port number");
739
exit(EXIT_FAILURE);
951
exitcode = EXIT_FAILURE;
952
goto end;
740
953
}
741
954
*address = '\0';
742
955
address = connect_to;
743
ret = start_mandos_communication(address, port, if_index);
956
ret = start_mandos_communication(address, port, if_index, &mc);
744
957
if(ret < 0){
745
exit(EXIT_FAILURE);
958
exitcode = EXIT_FAILURE;
746
959
} else {
747
exit(EXIT_SUCCESS);
748
}
749
}
750
751
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
752
if(sd < 0) {
753
perror("socket");
754
returncode = EXIT_FAILURE;
755
goto exit;
756
}
757
strcpy(network.ifr_name, interface);
758
ret = ioctl(sd, SIOCGIFFLAGS, &network);
759
if(ret == -1){
760
761
perror("ioctl SIOCGIFFLAGS");
762
returncode = EXIT_FAILURE;
763
goto exit;
764
}
765
if((network.ifr_flags & IFF_UP) == 0){
766
network.ifr_flags |= IFF_UP;
767
ret = ioctl(sd, SIOCSIFFLAGS, &network);
768
if(ret == -1){
769
perror("ioctl SIOCSIFFLAGS");
770
returncode = EXIT_FAILURE;
771
goto exit;
772
}
773
}
774
close(sd);
960
exitcode = EXIT_SUCCESS;
961
}
962
goto end;
963
}
775
964
776
965
if (not debug){
777
966
avahi_set_log_function(empty_log);
778
967
}
779
968
780
/* Initialize the psuedo-RNG */
969
/* Initialize the pseudo-RNG for Avahi */
781
970
srand((unsigned int) time(NULL));
782
783
/* Allocate main loop object */
784
if (!(simple_poll = avahi_simple_poll_new())) {
785
fprintf(stderr, "Failed to create simple poll object.\n");
786
returncode = EXIT_FAILURE;
787
goto exit;
788
}
789
790
/* Do not publish any local records */
791
avahi_server_config_init(&config);
792
config.publish_hinfo = 0;
793
config.publish_addresses = 0;
794
config.publish_workstation = 0;
795
config.publish_domain = 0;
796
797
/* Allocate a new server */
798
server = avahi_server_new(avahi_simple_poll_get(simple_poll),
799
&config, NULL, NULL, &error);
800
801
/* Free the configuration data */
802
avahi_server_config_free(&config);
803
804
/* Check if creating the server object succeeded */
805
if (!server) {
806
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",
807
1002
avahi_strerror(error));
808
returncode = EXIT_FAILURE;
809
goto exit;
1003
exitcode = EXIT_FAILURE;
1004
goto end;
810
1005
}
811
1006
812
/* Create the service browser */
813
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,
814
1009
AVAHI_PROTO_INET6,
815
1010
"_mandos._tcp", NULL, 0,
816
browse_callback, server);
817
if (!sb) {
1011
browse_callback, &mc);
1012
if (sb == NULL) {
818
1013
fprintf(stderr, "Failed to create service browser: %s\n",
819
avahi_strerror(avahi_server_errno(server)));
820
returncode = EXIT_FAILURE;
821
goto exit;
1014
avahi_strerror(avahi_server_errno(mc.server)));
1015
exitcode = EXIT_FAILURE;
1016
goto end;
822
1017
}
823
1018
824
1019
/* Run the main loop */
825
1020
826
1021
if (debug){
827
fprintf(stderr, "Starting avahi loop search\n");
1022
fprintf(stderr, "Starting Avahi loop search\n");
828
1023
}
829
1024
830
avahi_simple_poll_loop(simple_poll);
1025
avahi_simple_poll_loop(mc.simple_poll);
831
1026
832
exit:
1027
end:
833
1028
834
1029
if (debug){
835
1030
fprintf(stderr, "%s exiting\n", argv[0]);
836
1031
}
837
1032
838
1033
/* Cleanup things */
839
if (sb)
1034
if (sb != NULL)
840
1035
avahi_s_service_browser_free(sb);
841
1036
842
if (server)
843
avahi_server_free(server);
844
845
if (simple_poll)
846
avahi_simple_poll_free(simple_poll);
847
free(certfile);
848
free(certkey);
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
}
849
1049
850
return returncode;
1050
return exitcode;
851
1051
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0