To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to plugins.d/mandosclient.c
- browse files at revision 38
- compare with another revision
- download diff
- download tarball
- view history from revision 38
- Committer: Teddy Hogeborn
- Date: 2008-08-03 01:09:36 UTC
- mfrom: (24.1.9 mandos)
- Revision ID: teddy@fukt.bsnet.se-20080803010936-ujme8tgxceszfbi1
* plugbasedclient.c (main): New "--userid" and "--groupid" options.
Take an additional non-option argument and
parse it as a plus-separated and -prefixed
list of additional options.
* plugins.d/mandosclient.c (DH_BITS): Replaced with
"mandos_context.dh_bits". All
users changed.
(certdir): Renamed to "keydir". All users changed.
(certfile): Renamed to "pubkeyfile". All users changed.
(certkey): Renamed to "seckeyfile". All users changed.
(encrypted_session): Replaced with "mandos_context". All users
changed.
(initgnutls): Take additional "session" and "dh_params" arguments.
All callers changed.
(start_mandos_communication): Take additional "mc" argument. All
callers changed. Print target IPv6
address if different than supplied
string.
(simple_poll) Replaced with "mandos_context.simple_poll". All users
changed.
(server): Replaced with "mandos_context.server". All users changed.
(main): Default interface to "eth0". Rename "--certdir" to
"--keydir", "--certkey" to "--seckey", and "--certfile" to
"--pubkey". New options "--dh-bits" and "--priority". If
the interface is not up, bring it up.
Take an additional non-option argument and
parse it as a plus-separated and -prefixed
list of additional options.
* plugins.d/mandosclient.c (DH_BITS): Replaced with
"mandos_context.dh_bits". All
users changed.
(certdir): Renamed to "keydir". All users changed.
(certfile): Renamed to "pubkeyfile". All users changed.
(certkey): Renamed to "seckeyfile". All users changed.
(encrypted_session): Replaced with "mandos_context". All users
changed.
(initgnutls): Take additional "session" and "dh_params" arguments.
All callers changed.
(start_mandos_communication): Take additional "mc" argument. All
callers changed. Print target IPv6
address if different than supplied
string.
(simple_poll) Replaced with "mandos_context.simple_poll". All users
changed.
(server): Replaced with "mandos_context.server". All users changed.
(main): Default interface to "eth0". Rename "--certdir" to
"--keydir", "--certkey" to "--seckey", and "--certfile" to
"--pubkey". New options "--dh-bits" and "--priority". If
the interface is not up, bring it up.
- files added:
- ca.pem
- files removed:
- COPYING
- files renamed:
- plugin-runner.c => plugbasedclient.c
- plugins.d/password-request.c => plugins.d/mandosclient.c
- plugins.d/password-prompt.c => plugins.d/passprompt.c
- mandos.conf => server.conf
- mandos => server.py
- files modified:
- Makefile
added
removed
plugins.d/mandosclient.c
32
32
#define _LARGEFILE_SOURCE
33
33
#define _FILE_OFFSET_BITS 64
34
34
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
36
37
#include <stdio.h> /* fprintf(), stderr, fwrite(),
38
stdout, ferror() */
39
#include <stdint.h> /* uint16_t, uint32_t */
40
#include <stddef.h> /* NULL, size_t, ssize_t */
41
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
42
srand() */
43
#include <stdbool.h> /* bool, true */
44
#include <string.h> /* memset(), strcmp(), strlen(),
45
strerror(), asprintf(), strcpy() */
46
#include <sys/ioctl.h> /* ioctl */
47
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
48
sockaddr_in6, PF_INET6,
49
SOCK_STREAM, INET6_ADDRSTRLEN,
50
uid_t, gid_t */
51
#include <inttypes.h> /* PRIu16 */
52
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
53
struct in6_addr, inet_pton(),
54
connect() */
55
#include <assert.h> /* assert() */
56
#include <errno.h> /* perror(), errno */
57
#include <time.h> /* time() */
58
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
59
SIOCSIFFLAGS, if_indextoname(),
60
if_nametoindex(), IF_NAMESIZE */
61
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
62
getuid(), getgid(), setuid(),
63
setgid() */
64
#include <netinet/in.h>
65
#include <arpa/inet.h> /* inet_pton(), htons */
66
#include <iso646.h> /* not, and */
67
#include <argp.h> /* struct argp_option, error_t, struct
68
argp_state, struct argp,
69
argp_parse(), ARGP_KEY_ARG,
70
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
71
72
/* Avahi */
73
/* All Avahi types, constants and functions
74
Avahi*, avahi_*,
75
AVAHI_* */
35
#include <stdio.h>
36
#include <assert.h>
37
#include <stdlib.h>
38
#include <time.h>
39
#include <net/if.h> /* if_nametoindex */
40
#include <sys/ioctl.h> // ioctl, ifreq, SIOCGIFFLAGS, IFF_UP, SIOCSIFFLAGS
41
#include <net/if.h> // ioctl, ifreq, SIOCGIFFLAGS, IFF_UP, SIOCSIFFLAGS
42
76
43
#include <avahi-core/core.h>
77
44
#include <avahi-core/lookup.h>
78
45
#include <avahi-core/log.h>
80
47
#include <avahi-common/malloc.h>
81
48
#include <avahi-common/error.h>
82
49
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_* */
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>
98
70
99
71
#define BUFFER_SIZE 256
100
72
73
static const char *keydir = "/conf/conf.d/mandos";
74
static const char *pubkeyfile = "pubkey.txt";
75
static const char *seckeyfile = "seckey.txt";
76
101
77
bool debug = false;
102
static const char *keydir = "/conf/conf.d/mandos";
103
static const char mandos_protocol_version[] = "1";
104
const char *argp_program_version = "password-request 1.0";
105
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
106
78
107
/* Used for passing in values through the Avahi callback functions */
79
/* Used for passing in values through all the callback functions */
108
80
typedef struct {
109
81
AvahiSimplePoll *simple_poll;
110
82
AvahiServer *server;
111
83
gnutls_certificate_credentials_t cred;
112
84
unsigned int dh_bits;
113
gnutls_dh_params_t dh_params;
114
85
const char *priority;
115
86
} mandos_context;
116
87
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,
88
static ssize_t pgp_packet_decrypt (char *packet, size_t packet_size,
89
char **new_packet,
141
90
const char *homedir){
142
91
gpgme_data_t dh_crypto, dh_plain;
143
92
gpgme_ctx_t ctx;
144
93
gpgme_error_t rc;
145
94
ssize_t ret;
146
size_t plaintext_capacity = 0;
147
ssize_t plaintext_length = 0;
95
ssize_t new_packet_capacity = 0;
96
ssize_t new_packet_length = 0;
148
97
gpgme_engine_info_t engine_info;
149
98
150
99
if (debug){
151
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
100
fprintf(stderr, "Trying to decrypt OpenPGP packet\n");
152
101
}
153
102
154
103
/* Init GPGME */
160
109
return -1;
161
110
}
162
111
163
/* Set GPGME home directory for the OpenPGP engine only */
112
/* Set GPGME home directory */
164
113
rc = gpgme_get_engine_info (&engine_info);
165
114
if (rc != GPG_ERR_NO_ERROR){
166
115
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
176
125
engine_info = engine_info->next;
177
126
}
178
127
if(engine_info == NULL){
179
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
128
fprintf(stderr, "Could not set home dir to %s\n", homedir);
180
129
return -1;
181
130
}
182
131
183
/* Create new GPGME data buffer from memory cryptotext */
184
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
185
0);
132
/* Create new GPGME data buffer from packet buffer */
133
rc = gpgme_data_new_from_mem(&dh_crypto, packet, packet_size, 0);
186
134
if (rc != GPG_ERR_NO_ERROR){
187
135
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
188
136
gpgme_strsource(rc), gpgme_strerror(rc));
194
142
if (rc != GPG_ERR_NO_ERROR){
195
143
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
196
144
gpgme_strsource(rc), gpgme_strerror(rc));
197
gpgme_data_release(dh_crypto);
198
145
return -1;
199
146
}
200
147
203
150
if (rc != GPG_ERR_NO_ERROR){
204
151
fprintf(stderr, "bad gpgme_new: %s: %s\n",
205
152
gpgme_strsource(rc), gpgme_strerror(rc));
206
plaintext_length = -1;
207
goto decrypt_end;
153
return -1;
208
154
}
209
155
210
/* Decrypt data from the cryptotext data buffer to the plaintext
211
data buffer */
156
/* Decrypt data from the FILE pointer to the plaintext data
157
buffer */
212
158
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
213
159
if (rc != GPG_ERR_NO_ERROR){
214
160
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
215
161
gpgme_strsource(rc), gpgme_strerror(rc));
216
plaintext_length = -1;
217
goto decrypt_end;
162
return -1;
218
163
}
219
164
220
165
if(debug){
221
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
166
fprintf(stderr, "Decryption of OpenPGP packet succeeded\n");
222
167
}
223
168
224
169
if (debug){
225
170
gpgme_decrypt_result_t result;
226
171
result = gpgme_op_decrypt_result(ctx);
229
174
} else {
230
175
fprintf(stderr, "Unsupported algorithm: %s\n",
231
176
result->unsupported_algorithm);
232
fprintf(stderr, "Wrong key usage: %u\n",
177
fprintf(stderr, "Wrong key usage: %d\n",
233
178
result->wrong_key_usage);
234
179
if(result->file_name != NULL){
235
180
fprintf(stderr, "File name: %s\n", result->file_name);
250
195
}
251
196
}
252
197
198
/* Delete the GPGME FILE pointer cryptotext data buffer */
199
gpgme_data_release(dh_crypto);
200
253
201
/* Seek back to the beginning of the GPGME plaintext data buffer */
254
202
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
255
203
perror("pgpme_data_seek");
256
plaintext_length = -1;
257
goto decrypt_end;
258
204
}
259
205
260
*plaintext = NULL;
206
*new_packet = 0;
261
207
while(true){
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;
208
if (new_packet_length + BUFFER_SIZE > new_packet_capacity){
209
*new_packet = realloc(*new_packet,
210
(unsigned int)new_packet_capacity
211
+ BUFFER_SIZE);
212
if (*new_packet == NULL){
213
perror("realloc");
214
return -1;
215
}
216
new_packet_capacity += BUFFER_SIZE;
269
217
}
270
218
271
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
219
ret = gpgme_data_read(dh_plain, *new_packet + new_packet_length,
272
220
BUFFER_SIZE);
273
221
/* Print the data, if any */
274
222
if (ret == 0){
275
/* EOF */
276
223
break;
277
224
}
278
225
if(ret < 0){
279
226
perror("gpgme_data_read");
280
plaintext_length = -1;
281
goto decrypt_end;
227
return -1;
282
228
}
283
plaintext_length += ret;
229
new_packet_length += ret;
284
230
}
285
231
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);
232
/* FIXME: check characters before printing to screen so to not print
233
terminal control characters */
234
/* if(debug){ */
235
/* fprintf(stderr, "decrypted password is: "); */
236
/* fwrite(*new_packet, 1, new_packet_length, stderr); */
237
/* fprintf(stderr, "\n"); */
238
/* } */
298
239
299
240
/* Delete the GPGME plaintext data buffer */
300
241
gpgme_data_release(dh_plain);
301
return plaintext_length;
242
return new_packet_length;
302
243
}
303
244
304
245
static const char * safer_gnutls_strerror (int value) {
305
const char *ret = gnutls_strerror (value); /* Spurious warning */
246
const char *ret = gnutls_strerror (value);
306
247
if (ret == NULL)
307
248
ret = "(unknown)";
308
249
return ret;
309
250
}
310
251
311
/* GnuTLS log function callback */
312
252
static void debuggnutls(__attribute__((unused)) int level,
313
253
const char* string){
314
fprintf(stderr, "GnuTLS: %s", string);
254
fprintf(stderr, "%s", string);
315
255
}
316
256
317
static int init_gnutls_global(mandos_context *mc,
318
const char *pubkeyfilename,
319
const char *seckeyfilename){
257
static int initgnutls(mandos_context *mc, gnutls_session_t *session,
258
gnutls_dh_params_t *dh_params){
259
const char *err;
320
260
int ret;
321
261
322
262
if(debug){
323
263
fprintf(stderr, "Initializing GnuTLS\n");
324
264
}
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));
265
266
if ((ret = gnutls_global_init ())
267
!= GNUTLS_E_SUCCESS) {
268
fprintf (stderr, "global_init: %s\n", safer_gnutls_strerror(ret));
330
269
return -1;
331
270
}
332
271
333
272
if (debug){
334
/* "Use a log level over 10 to enable all debugging options."
335
* - GnuTLS manual
336
*/
337
273
gnutls_global_set_log_level(11);
338
274
gnutls_global_set_log_function(debuggnutls);
339
275
}
340
276
341
/* OpenPGP credentials */
342
gnutls_certificate_allocate_credentials(&mc->cred);
343
if (ret != GNUTLS_E_SUCCESS){
344
fprintf (stderr, "GnuTLS memory error: %s\n", /* Spurious
345
warning */
277
/* openpgp credentials */
278
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
279
!= GNUTLS_E_SUCCESS) {
280
fprintf (stderr, "memory error: %s\n",
346
281
safer_gnutls_strerror(ret));
347
gnutls_global_deinit ();
348
282
return -1;
349
283
}
350
284
351
285
if(debug){
352
286
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
353
" and keyfile %s as GnuTLS credentials\n", pubkeyfilename,
354
seckeyfilename);
287
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
288
seckeyfile);
355
289
}
356
290
357
291
ret = gnutls_certificate_set_openpgp_key_file
358
(mc->cred, pubkeyfilename, seckeyfilename,
359
GNUTLS_OPENPGP_FMT_BASE64);
292
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
360
293
if (ret != GNUTLS_E_SUCCESS) {
361
fprintf(stderr,
362
"Error[%d] while reading the OpenPGP key pair ('%s',"
363
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
364
fprintf(stdout, "The GnuTLS error is: %s\n",
294
fprintf
295
(stderr, "Error[%d] while reading the OpenPGP key pair ('%s',"
296
" '%s')\n",
297
ret, pubkeyfile, seckeyfile);
298
fprintf(stdout, "The Error is: %s\n",
365
299
safer_gnutls_strerror(ret));
366
goto globalfail;
367
}
368
369
/* GnuTLS server initialization */
370
ret = gnutls_dh_params_init(&mc->dh_params);
371
if (ret != GNUTLS_E_SUCCESS) {
372
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
373
" %s\n", safer_gnutls_strerror(ret));
374
goto globalfail;
375
}
376
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
377
if (ret != GNUTLS_E_SUCCESS) {
378
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
379
safer_gnutls_strerror(ret));
380
goto globalfail;
381
}
382
383
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
384
385
return 0;
386
387
globalfail:
388
389
gnutls_certificate_free_credentials(mc->cred);
390
gnutls_global_deinit();
391
return -1;
392
393
}
394
395
static int init_gnutls_session(mandos_context *mc,
396
gnutls_session_t *session){
397
int ret;
398
/* GnuTLS session creation */
399
ret = gnutls_init(session, GNUTLS_SERVER);
400
if (ret != GNUTLS_E_SUCCESS){
300
return -1;
301
}
302
303
//GnuTLS server initialization
304
if ((ret = gnutls_dh_params_init(dh_params))
305
!= GNUTLS_E_SUCCESS) {
306
fprintf (stderr, "Error in dh parameter initialization: %s\n",
307
safer_gnutls_strerror(ret));
308
return -1;
309
}
310
311
if ((ret = gnutls_dh_params_generate2(*dh_params, mc->dh_bits))
312
!= GNUTLS_E_SUCCESS) {
313
fprintf (stderr, "Error in prime generation: %s\n",
314
safer_gnutls_strerror(ret));
315
return -1;
316
}
317
318
gnutls_certificate_set_dh_params(mc->cred, *dh_params);
319
320
// GnuTLS session creation
321
if ((ret = gnutls_init(session, GNUTLS_SERVER))
322
!= GNUTLS_E_SUCCESS){
401
323
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
402
324
safer_gnutls_strerror(ret));
403
325
}
404
326
405
{
406
const char *err;
407
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
408
if (ret != GNUTLS_E_SUCCESS) {
409
fprintf(stderr, "Syntax error at: %s\n", err);
410
fprintf(stderr, "GnuTLS error: %s\n",
411
safer_gnutls_strerror(ret));
412
gnutls_deinit (*session);
413
return -1;
414
}
327
if ((ret = gnutls_priority_set_direct(*session, mc->priority, &err))
328
!= GNUTLS_E_SUCCESS) {
329
fprintf(stderr, "Syntax error at: %s\n", err);
330
fprintf(stderr, "GnuTLS error: %s\n",
331
safer_gnutls_strerror(ret));
332
return -1;
415
333
}
416
334
417
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
418
mc->cred);
419
if (ret != GNUTLS_E_SUCCESS) {
420
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
335
if ((ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
336
mc->cred))
337
!= GNUTLS_E_SUCCESS) {
338
fprintf(stderr, "Error setting a credentials set: %s\n",
421
339
safer_gnutls_strerror(ret));
422
gnutls_deinit (*session);
423
340
return -1;
424
341
}
425
342
432
349
return 0;
433
350
}
434
351
435
/* Avahi log function callback */
436
352
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
437
353
__attribute__((unused)) const char *txt){}
438
354
439
/* Called when a Mandos server is found */
440
355
static int start_mandos_communication(const char *ip, uint16_t port,
441
356
AvahiIfIndex if_index,
442
357
mandos_context *mc){
443
358
int ret, tcp_sd;
444
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
359
struct sockaddr_in6 to;
445
360
char *buffer = NULL;
446
361
char *decrypted_buffer;
447
362
size_t buffer_length = 0;
448
363
size_t buffer_capacity = 0;
449
364
ssize_t decrypted_buffer_size;
450
size_t written;
365
size_t written = 0;
451
366
int retval = 0;
452
367
char interface[IF_NAMESIZE];
453
368
gnutls_session_t session;
454
455
ret = init_gnutls_session (mc, &session);
456
if (ret != 0){
457
return -1;
458
}
369
gnutls_dh_params_t dh_params;
459
370
460
371
if(debug){
461
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
462
"\n", ip, port);
372
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
373
ip, port);
463
374
}
464
375
465
376
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
476
387
fprintf(stderr, "Binding to interface %s\n", interface);
477
388
}
478
389
479
memset(&to, 0, sizeof(to));
480
to.in6.sin6_family = AF_INET6;
481
/* It would be nice to have a way to detect if we were passed an
482
IPv4 address here. Now we assume an IPv6 address. */
483
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
390
memset(&to,0,sizeof(to)); /* Spurious warning */
391
to.sin6_family = AF_INET6;
392
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
484
393
if (ret < 0 ){
485
394
perror("inet_pton");
486
395
return -1;
489
398
fprintf(stderr, "Bad address: %s\n", ip);
490
399
return -1;
491
400
}
492
to.in6.sin6_port = htons(port); /* Spurious warning */
401
to.sin6_port = htons(port); /* Spurious warning */
493
402
494
to.in6.sin6_scope_id = (uint32_t)if_index;
403
to.sin6_scope_id = (uint32_t)if_index;
495
404
496
405
if(debug){
497
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
498
port);
406
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
499
407
char addrstr[INET6_ADDRSTRLEN] = "";
500
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
408
if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr,
501
409
sizeof(addrstr)) == NULL){
502
410
perror("inet_ntop");
503
411
} else {
507
415
}
508
416
}
509
417
510
ret = connect(tcp_sd, &to.in, sizeof(to));
418
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
511
419
if (ret < 0){
512
420
perror("connect");
513
421
return -1;
514
422
}
515
516
const char *out = mandos_protocol_version;
517
written = 0;
518
while (true){
519
size_t out_size = strlen(out);
520
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
521
out_size - written));
522
if (ret == -1){
523
perror("write");
524
retval = -1;
525
goto mandos_end;
526
}
527
written += (size_t)ret;
528
if(written < out_size){
529
continue;
530
} else {
531
if (out == mandos_protocol_version){
532
written = 0;
533
out = "\r\n";
534
} else {
535
break;
536
}
537
}
423
424
ret = initgnutls (mc, &session, &dh_params);
425
if (ret != 0){
426
retval = -1;
427
return -1;
538
428
}
539
429
430
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
431
540
432
if(debug){
541
433
fprintf(stderr, "Establishing TLS session with %s\n", ip);
542
434
}
543
435
544
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
545
546
do{
547
ret = gnutls_handshake (session);
548
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
436
ret = gnutls_handshake (session);
549
437
550
438
if (ret != GNUTLS_E_SUCCESS){
551
439
if(debug){
552
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
440
fprintf(stderr, "\n*** Handshake failed ***\n");
553
441
gnutls_perror (ret);
554
442
}
555
443
retval = -1;
556
goto mandos_end;
444
goto exit;
557
445
}
558
446
559
/* Read OpenPGP packet that contains the wanted password */
447
//Retrieve OpenPGP packet that contains the wanted password
560
448
561
449
if(debug){
562
450
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
564
452
}
565
453
566
454
while(true){
567
buffer_capacity = adjustbuffer(&buffer, buffer_length,
568
buffer_capacity);
569
if (buffer_capacity == 0){
570
perror("adjustbuffer");
571
retval = -1;
572
goto mandos_end;
455
if (buffer_length + BUFFER_SIZE > buffer_capacity){
456
buffer = realloc(buffer, buffer_capacity + BUFFER_SIZE);
457
if (buffer == NULL){
458
perror("realloc");
459
goto exit;
460
}
461
buffer_capacity += BUFFER_SIZE;
573
462
}
574
463
575
464
ret = gnutls_record_recv(session, buffer+buffer_length,
583
472
case GNUTLS_E_AGAIN:
584
473
break;
585
474
case GNUTLS_E_REHANDSHAKE:
586
do{
587
ret = gnutls_handshake (session);
588
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
475
ret = gnutls_handshake (session);
589
476
if (ret < 0){
590
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
477
fprintf(stderr, "\n*** Handshake failed ***\n");
591
478
gnutls_perror (ret);
592
479
retval = -1;
593
goto mandos_end;
480
goto exit;
594
481
}
595
482
break;
596
483
default:
597
484
fprintf(stderr, "Unknown error while reading data from"
598
" encrypted session with Mandos server\n");
485
" encrypted session with mandos server\n");
599
486
retval = -1;
600
487
gnutls_bye (session, GNUTLS_SHUT_RDWR);
601
goto mandos_end;
488
goto exit;
602
489
}
603
490
} else {
604
491
buffer_length += (size_t) ret;
605
492
}
606
493
}
607
494
608
if(debug){
609
fprintf(stderr, "Closing TLS session\n");
610
}
611
612
gnutls_bye (session, GNUTLS_SHUT_RDWR);
613
614
495
if (buffer_length > 0){
615
496
decrypted_buffer_size = pgp_packet_decrypt(buffer,
616
497
buffer_length,
617
498
&decrypted_buffer,
618
499
keydir);
619
500
if (decrypted_buffer_size >= 0){
620
written = 0;
621
501
while(written < (size_t) decrypted_buffer_size){
622
502
ret = (int)fwrite (decrypted_buffer + written, 1,
623
503
(size_t)decrypted_buffer_size - written,
637
517
retval = -1;
638
518
}
639
519
}
640
641
/* Shutdown procedure */
642
643
mandos_end:
520
521
//shutdown procedure
522
523
if(debug){
524
fprintf(stderr, "Closing TLS session\n");
525
}
526
644
527
free(buffer);
528
gnutls_bye (session, GNUTLS_SHUT_RDWR);
529
exit:
645
530
close(tcp_sd);
646
531
gnutls_deinit (session);
532
gnutls_certificate_free_credentials (mc->cred);
533
gnutls_global_deinit ();
647
534
return retval;
648
535
}
649
536
650
static void resolve_callback(AvahiSServiceResolver *r,
651
AvahiIfIndex interface,
652
AVAHI_GCC_UNUSED AvahiProtocol protocol,
653
AvahiResolverEvent event,
654
const char *name,
655
const char *type,
656
const char *domain,
657
const char *host_name,
658
const AvahiAddress *address,
659
uint16_t port,
660
AVAHI_GCC_UNUSED AvahiStringList *txt,
661
AVAHI_GCC_UNUSED AvahiLookupResultFlags
662
flags,
663
void* userdata) {
537
static void resolve_callback( 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
void* userdata) {
664
550
mandos_context *mc = userdata;
665
assert(r);
551
assert(r); /* Spurious warning */
666
552
667
553
/* Called whenever a service has been resolved successfully or
668
554
timed out */
670
556
switch (event) {
671
557
default:
672
558
case AVAHI_RESOLVER_FAILURE:
673
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
674
" of type '%s' in domain '%s': %s\n", name, type, domain,
559
fprintf(stderr, "(Resolver) Failed to resolve service '%s' of"
560
" type '%s' in domain '%s': %s\n", name, type, domain,
675
561
avahi_strerror(avahi_server_errno(mc->server)));
676
562
break;
677
563
680
566
char ip[AVAHI_ADDRESS_STR_MAX];
681
567
avahi_address_snprint(ip, sizeof(ip), address);
682
568
if(debug){
683
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
684
PRIu16 ") on port %d\n", name, host_name, ip,
685
interface, port);
569
fprintf(stderr, "Mandos server \"%s\" found on %s (%s) on"
570
" port %d\n", name, host_name, ip, port);
686
571
}
687
572
int ret = start_mandos_communication(ip, port, interface, mc);
688
573
if (ret == 0){
689
avahi_simple_poll_quit(mc->simple_poll);
574
exit(EXIT_SUCCESS);
690
575
}
691
576
}
692
577
}
700
585
const char *name,
701
586
const char *type,
702
587
const char *domain,
703
AVAHI_GCC_UNUSED AvahiLookupResultFlags
704
flags,
588
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
705
589
void* userdata) {
706
590
mandos_context *mc = userdata;
707
assert(b);
591
assert(b); /* Spurious warning */
708
592
709
593
/* Called whenever a new services becomes available on the LAN or
710
594
is removed from the LAN */
713
597
default:
714
598
case AVAHI_BROWSER_FAILURE:
715
599
716
fprintf(stderr, "(Avahi browser) %s\n",
600
fprintf(stderr, "(Browser) %s\n",
717
601
avahi_strerror(avahi_server_errno(mc->server)));
718
602
avahi_simple_poll_quit(mc->simple_poll);
719
603
return;
720
604
721
605
case AVAHI_BROWSER_NEW:
722
/* We ignore the returned Avahi resolver object. In the callback
723
function we free it. If the Avahi server is terminated before
724
the callback function is called the Avahi server will free the
725
resolver for us. */
606
/* We ignore the returned resolver object. In the callback
607
function we free it. If the server is terminated before
608
the callback function is called the server will free
609
the resolver for us. */
726
610
727
if (!(avahi_s_service_resolver_new(mc->server, interface,
728
protocol, name, type, domain,
611
if (!(avahi_s_service_resolver_new(mc->server, interface, protocol, name,
612
type, domain,
729
613
AVAHI_PROTO_INET6, 0,
730
614
resolve_callback, mc)))
731
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
732
name, avahi_strerror(avahi_server_errno(mc->server)));
615
fprintf(stderr, "Failed to resolve service '%s': %s\n", name,
616
avahi_strerror(avahi_server_errno(mc->server)));
733
617
break;
734
618
735
619
case AVAHI_BROWSER_REMOVE:
737
621
738
622
case AVAHI_BROWSER_ALL_FOR_NOW:
739
623
case AVAHI_BROWSER_CACHE_EXHAUSTED:
740
if(debug){
741
fprintf(stderr, "No Mandos server found, still searching...\n");
742
}
743
624
break;
744
625
}
745
626
}
746
627
747
628
/* Combines file name and path and returns the malloced new
748
629
string. some sane checks could/should be added */
749
static char *combinepath(const char *first, const char *second){
750
char *tmp;
751
int ret = asprintf(&tmp, "%s/%s", first, second);
752
if(ret < 0){
630
static const char *combinepath(const char *first, const char *second){
631
size_t f_len = strlen(first);
632
size_t s_len = strlen(second);
633
char *tmp = malloc(f_len + s_len + 2);
634
if (tmp == NULL){
753
635
return NULL;
754
636
}
637
if(f_len > 0){
638
memcpy(tmp, first, f_len); /* Spurious warning */
639
}
640
tmp[f_len] = '/';
641
if(s_len > 0){
642
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
643
}
644
tmp[f_len + 1 + s_len] = '\0';
755
645
return tmp;
756
646
}
757
647
758
648
759
int main(int argc, char *argv[]){
649
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
650
AvahiServerConfig config;
760
651
AvahiSServiceBrowser *sb = NULL;
761
652
int error;
762
653
int ret;
763
int exitcode = EXIT_SUCCESS;
654
int debug_int;
655
int returncode = EXIT_SUCCESS;
764
656
const char *interface = "eth0";
765
657
struct ifreq network;
766
658
int sd;
767
uid_t uid;
768
gid_t gid;
769
659
char *connect_to = NULL;
770
660
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
771
char *pubkeyfilename = NULL;
772
char *seckeyfilename = NULL;
773
const char *pubkeyname = "pubkey.txt";
774
const char *seckeyname = "seckey.txt";
775
661
mandos_context mc = { .simple_poll = NULL, .server = NULL,
776
662
.dh_bits = 1024, .priority = "SECURE256"};
777
bool gnutls_initalized = false;
778
779
{
780
struct argp_option options[] = {
781
{ .name = "debug", .key = 128,
782
.doc = "Debug mode", .group = 3 },
783
{ .name = "connect", .key = 'c',
784
.arg = "IP",
785
.doc = "Connect directly to a sepcified mandos server",
786
.group = 1 },
787
{ .name = "interface", .key = 'i',
788
.arg = "INTERFACE",
789
.doc = "Interface that Avahi will conntect through",
790
.group = 1 },
791
{ .name = "keydir", .key = 'd',
792
.arg = "KEYDIR",
793
.doc = "Directory where the openpgp keyring is",
794
.group = 1 },
795
{ .name = "seckey", .key = 's',
796
.arg = "SECKEY",
797
.doc = "Secret openpgp key for gnutls authentication",
798
.group = 1 },
799
{ .name = "pubkey", .key = 'p',
800
.arg = "PUBKEY",
801
.doc = "Public openpgp key for gnutls authentication",
802
.group = 2 },
803
{ .name = "dh-bits", .key = 129,
804
.arg = "BITS",
805
.doc = "dh-bits to use in gnutls communication",
806
.group = 2 },
807
{ .name = "priority", .key = 130,
808
.arg = "PRIORITY",
809
.doc = "GNUTLS priority", .group = 1 },
810
{ .name = NULL }
811
};
812
813
814
error_t parse_opt (int key, char *arg,
815
struct argp_state *state) {
816
/* Get the INPUT argument from `argp_parse', which we know is
817
a pointer to our plugin list pointer. */
818
switch (key) {
819
case 128:
820
debug = true;
821
break;
822
case 'c':
823
connect_to = arg;
824
break;
825
case 'i':
826
interface = arg;
827
break;
828
case 'd':
829
keydir = arg;
830
break;
831
case 's':
832
seckeyname = arg;
833
break;
834
case 'p':
835
pubkeyname = arg;
836
break;
837
case 129:
838
errno = 0;
839
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
840
if (errno){
841
perror("strtol");
842
exit(EXIT_FAILURE);
843
}
844
break;
845
case 130:
846
mc.priority = arg;
847
break;
848
case ARGP_KEY_ARG:
849
argp_usage (state);
850
case ARGP_KEY_END:
851
break;
852
default:
853
return ARGP_ERR_UNKNOWN;
854
}
855
return 0;
856
}
857
858
struct argp argp = { .options = options, .parser = parse_opt,
859
.args_doc = "",
860
.doc = "Mandos client -- Get and decrypt"
861
" passwords from mandos server" };
862
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
863
if (ret == ARGP_ERR_UNKNOWN){
864
fprintf(stderr, "Unknown error while parsing arguments\n");
865
exitcode = EXIT_FAILURE;
866
goto end;
867
}
868
}
869
870
pubkeyfilename = combinepath(keydir, pubkeyname);
871
if (pubkeyfilename == NULL){
872
perror("combinepath");
873
exitcode = EXIT_FAILURE;
874
goto end;
875
}
876
877
seckeyfilename = combinepath(keydir, seckeyname);
878
if (seckeyfilename == NULL){
879
perror("combinepath");
880
exitcode = EXIT_FAILURE;
881
goto end;
882
}
883
884
ret = init_gnutls_global(&mc, pubkeyfilename, seckeyfilename);
885
if (ret == -1){
886
fprintf(stderr, "init_gnutls_global failed\n");
887
exitcode = EXIT_FAILURE;
888
goto end;
889
} else {
890
gnutls_initalized = true;
891
}
892
893
/* If the interface is down, bring it up */
894
{
895
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
896
if(sd < 0) {
897
perror("socket");
898
exitcode = EXIT_FAILURE;
899
goto end;
900
}
901
strcpy(network.ifr_name, interface);
902
ret = ioctl(sd, SIOCGIFFLAGS, &network);
903
if(ret == -1){
904
perror("ioctl SIOCGIFFLAGS");
905
exitcode = EXIT_FAILURE;
906
goto end;
907
}
908
if((network.ifr_flags & IFF_UP) == 0){
909
network.ifr_flags |= IFF_UP;
910
ret = ioctl(sd, SIOCSIFFLAGS, &network);
911
if(ret == -1){
912
perror("ioctl SIOCSIFFLAGS");
913
exitcode = EXIT_FAILURE;
914
goto end;
915
}
916
}
917
close(sd);
918
}
919
920
uid = getuid();
921
gid = getgid();
922
923
ret = setuid(uid);
924
if (ret == -1){
925
perror("setuid");
926
}
927
928
setgid(gid);
929
if (ret == -1){
930
perror("setgid");
663
664
debug_int = debug ? 1 : 0;
665
while (true){
666
struct option long_options[] = {
667
{"debug", no_argument, &debug_int, 1},
668
{"connect", required_argument, NULL, 'c'},
669
{"interface", required_argument, NULL, 'i'},
670
{"keydir", required_argument, NULL, 'd'},
671
{"seckey", required_argument, NULL, 's'},
672
{"pubkey", required_argument, NULL, 'p'},
673
{"dh-bits", required_argument, NULL, 'D'},
674
{"priority", required_argument, NULL, 'P'},
675
{0, 0, 0, 0} };
676
677
int option_index = 0;
678
ret = getopt_long (argc, argv, "i:", long_options,
679
&option_index);
680
681
if (ret == -1){
682
break;
683
}
684
685
switch(ret){
686
case 0:
687
break;
688
case 'i':
689
interface = optarg;
690
break;
691
case 'c':
692
connect_to = optarg;
693
break;
694
case 'd':
695
keydir = optarg;
696
break;
697
case 'p':
698
pubkeyfile = optarg;
699
break;
700
case 's':
701
seckeyfile = optarg;
702
break;
703
case 'D':
704
errno = 0;
705
mc.dh_bits = (unsigned int) strtol(optarg, NULL, 10);
706
if (errno){
707
perror("strtol");
708
exit(EXIT_FAILURE);
709
}
710
break;
711
case 'P':
712
mc.priority = optarg;
713
break;
714
case '?':
715
default:
716
exit(EXIT_FAILURE);
717
}
718
}
719
debug = debug_int ? true : false;
720
721
pubkeyfile = combinepath(keydir, pubkeyfile);
722
if (pubkeyfile == NULL){
723
perror("combinepath");
724
returncode = EXIT_FAILURE;
725
goto exit;
726
}
727
728
seckeyfile = combinepath(keydir, seckeyfile);
729
if (seckeyfile == NULL){
730
perror("combinepath");
731
goto exit;
931
732
}
932
733
933
734
if_index = (AvahiIfIndex) if_nametoindex(interface);
942
743
char *address = strrchr(connect_to, ':');
943
744
if(address == NULL){
944
745
fprintf(stderr, "No colon in address\n");
945
exitcode = EXIT_FAILURE;
946
goto end;
746
exit(EXIT_FAILURE);
947
747
}
948
748
errno = 0;
949
749
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
950
750
if(errno){
951
751
perror("Bad port number");
952
exitcode = EXIT_FAILURE;
953
goto end;
752
exit(EXIT_FAILURE);
954
753
}
955
754
*address = '\0';
956
755
address = connect_to;
957
756
ret = start_mandos_communication(address, port, if_index, &mc);
958
757
if(ret < 0){
959
exitcode = EXIT_FAILURE;
758
exit(EXIT_FAILURE);
960
759
} else {
961
exitcode = EXIT_SUCCESS;
962
}
963
goto end;
964
}
760
exit(EXIT_SUCCESS);
761
}
762
}
763
764
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
765
if(sd < 0) {
766
perror("socket");
767
returncode = EXIT_FAILURE;
768
goto exit;
769
}
770
strcpy(network.ifr_name, interface); /* Spurious warning */
771
ret = ioctl(sd, SIOCGIFFLAGS, &network);
772
if(ret == -1){
773
774
perror("ioctl SIOCGIFFLAGS");
775
returncode = EXIT_FAILURE;
776
goto exit;
777
}
778
if((network.ifr_flags & IFF_UP) == 0){
779
network.ifr_flags |= IFF_UP;
780
ret = ioctl(sd, SIOCSIFFLAGS, &network);
781
if(ret == -1){
782
perror("ioctl SIOCSIFFLAGS");
783
returncode = EXIT_FAILURE;
784
goto exit;
785
}
786
}
787
close(sd);
965
788
966
789
if (not debug){
967
790
avahi_set_log_function(empty_log);
968
791
}
969
792
970
/* Initialize the pseudo-RNG for Avahi */
793
/* Initialize the psuedo-RNG */
971
794
srand((unsigned int) time(NULL));
972
973
/* Allocate main Avahi loop object */
974
mc.simple_poll = avahi_simple_poll_new();
975
if (mc.simple_poll == NULL) {
976
fprintf(stderr, "Avahi: Failed to create simple poll"
977
" object.\n");
978
exitcode = EXIT_FAILURE;
979
goto end;
980
}
981
982
{
983
AvahiServerConfig config;
984
/* Do not publish any local Zeroconf records */
985
avahi_server_config_init(&config);
986
config.publish_hinfo = 0;
987
config.publish_addresses = 0;
988
config.publish_workstation = 0;
989
config.publish_domain = 0;
990
991
/* Allocate a new server */
992
mc.server = avahi_server_new(avahi_simple_poll_get
993
(mc.simple_poll), &config, NULL,
994
NULL, &error);
995
996
/* Free the Avahi configuration data */
997
avahi_server_config_free(&config);
998
}
999
1000
/* Check if creating the Avahi server object succeeded */
1001
if (mc.server == NULL) {
1002
fprintf(stderr, "Failed to create Avahi server: %s\n",
795
796
/* Allocate main loop object */
797
if (!(mc.simple_poll = avahi_simple_poll_new())) {
798
fprintf(stderr, "Failed to create simple poll object.\n");
799
returncode = EXIT_FAILURE;
800
goto exit;
801
}
802
803
/* Do not publish any local records */
804
avahi_server_config_init(&config);
805
config.publish_hinfo = 0;
806
config.publish_addresses = 0;
807
config.publish_workstation = 0;
808
config.publish_domain = 0;
809
810
/* Allocate a new server */
811
mc.server=avahi_server_new(avahi_simple_poll_get(mc.simple_poll),
812
&config, NULL, NULL, &error);
813
814
/* Free the configuration data */
815
avahi_server_config_free(&config);
816
817
/* Check if creating the server object succeeded */
818
if (!mc.server) {
819
fprintf(stderr, "Failed to create server: %s\n",
1003
820
avahi_strerror(error));
1004
exitcode = EXIT_FAILURE;
1005
goto end;
821
returncode = EXIT_FAILURE;
822
goto exit;
1006
823
}
1007
824
1008
/* Create the Avahi service browser */
825
/* Create the service browser */
1009
826
sb = avahi_s_service_browser_new(mc.server, if_index,
1010
827
AVAHI_PROTO_INET6,
1011
828
"_mandos._tcp", NULL, 0,
1012
829
browse_callback, &mc);
1013
if (sb == NULL) {
830
if (!sb) {
1014
831
fprintf(stderr, "Failed to create service browser: %s\n",
1015
832
avahi_strerror(avahi_server_errno(mc.server)));
1016
exitcode = EXIT_FAILURE;
1017
goto end;
833
returncode = EXIT_FAILURE;
834
goto exit;
1018
835
}
1019
836
1020
837
/* Run the main loop */
1021
838
1022
839
if (debug){
1023
fprintf(stderr, "Starting Avahi loop search\n");
840
fprintf(stderr, "Starting avahi loop search\n");
1024
841
}
1025
842
1026
843
avahi_simple_poll_loop(mc.simple_poll);
1027
844
1028
end:
845
exit:
1029
846
1030
847
if (debug){
1031
848
fprintf(stderr, "%s exiting\n", argv[0]);
1032
849
}
1033
850
1034
851
/* Cleanup things */
1035
if (sb != NULL)
852
if (sb)
1036
853
avahi_s_service_browser_free(sb);
1037
854
1038
if (mc.server != NULL)
855
if (mc.server)
1039
856
avahi_server_free(mc.server);
1040
857
1041
if (mc.simple_poll != NULL)
858
if (mc.simple_poll)
1042
859
avahi_simple_poll_free(mc.simple_poll);
1043
free(pubkeyfilename);
1044
free(seckeyfilename);
1045
1046
if (gnutls_initalized){
1047
gnutls_certificate_free_credentials(mc.cred);
1048
gnutls_global_deinit ();
1049
}
860
free(pubkeyfile);
861
free(seckeyfile);
1050
862
1051
return exitcode;
863
return returncode;
1052
864
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0