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- Committer: Teddy Hogeborn
- Date: 2008-08-10 16:13:23 UTC
- Revision ID: teddy@fukt.bsnet.se-20080810161323-wrh1rbpdrq0otuhf
* mandos (console): Define handler globally.
(main): If in debug mode, also reduce consol log level. Remove
console log handler before daemonizing.
(main): If in debug mode, also reduce consol log level. Remove
console log handler before daemonizing.
- files added:
- mandos-client.xml
- files removed:
- ca.pem
- files renamed:
- server.py => mandos
- plugbasedclient.c => mandos-client.c
- server.conf => mandos.conf
- 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
25
25
* along with this program. If not, see
26
26
* <http://www.gnu.org/licenses/>.
27
27
*
28
* Contact the authors at <https://www.fukt.bsnet.se/~belorn/> and
29
* <https://www.fukt.bsnet.se/~teddy/>.
28
* Contact the authors at <mandos@fukt.bsnet.se>.
30
29
*/
31
30
32
31
/* Needed by GPGME, specifically gpgme_data_seek() */
33
32
#define _LARGEFILE_SOURCE
34
33
#define _FILE_OFFSET_BITS 64
35
34
36
#include <stdio.h>
37
#include <assert.h>
38
#include <stdlib.h>
39
#include <time.h>
40
#include <net/if.h> /* if_nametoindex */
41
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 <net/if.h> /* ifreq, SIOCGIFFLAGS, SIOCSIFFLAGS,
48
IFF_UP */
49
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
50
sockaddr_in6, PF_INET6,
51
SOCK_STREAM, INET6_ADDRSTRLEN,
52
uid_t, gid_t */
53
#include <inttypes.h> /* PRIu16 */
54
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
55
struct in6_addr, inet_pton(),
56
connect() */
57
#include <assert.h> /* assert() */
58
#include <errno.h> /* perror(), errno */
59
#include <time.h> /* time() */
60
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
61
SIOCSIFFLAGS, if_indextoname(),
62
if_nametoindex(), IF_NAMESIZE */
63
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
64
getuid(), getgid(), setuid(),
65
setgid() */
66
#include <netinet/in.h>
67
#include <arpa/inet.h> /* inet_pton(), htons */
68
#include <iso646.h> /* not, and */
69
#include <argp.h> /* struct argp_option, error_t, struct
70
argp_state, struct argp,
71
argp_parse(), ARGP_KEY_ARG,
72
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
73
74
/* Avahi */
75
/* All Avahi types, constants and functions
76
Avahi*, avahi_*,
77
AVAHI_* */
42
78
#include <avahi-core/core.h>
43
79
#include <avahi-core/lookup.h>
44
80
#include <avahi-core/log.h>
46
82
#include <avahi-common/malloc.h>
47
83
#include <avahi-common/error.h>
48
84
49
//mandos client part
50
#include <sys/types.h> /* socket(), inet_pton() */
51
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
52
struct in6_addr, inet_pton() */
53
#include <gnutls/gnutls.h> /* All GnuTLS stuff */
54
#include <gnutls/openpgp.h> /* GnuTLS with openpgp stuff */
55
56
#include <unistd.h> /* close() */
57
#include <netinet/in.h>
58
#include <stdbool.h> /* true */
59
#include <string.h> /* memset */
60
#include <arpa/inet.h> /* inet_pton() */
61
#include <iso646.h> /* not */
62
63
// gpgme
64
#include <errno.h> /* perror() */
65
#include <gpgme.h>
66
67
// getopt long
68
#include <getopt.h>
69
70
#ifndef CERT_ROOT
71
#define CERT_ROOT "/conf/conf.d/cryptkeyreq/"
72
#endif
73
#define CERTFILE CERT_ROOT "openpgp-client.txt"
74
#define KEYFILE CERT_ROOT "openpgp-client-key.txt"
85
/* GnuTLS */
86
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and functions
87
gnutls_*
88
init_gnutls_session(),
89
GNUTLS_* */
90
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
91
GNUTLS_OPENPGP_FMT_BASE64 */
92
93
/* GPGME */
94
#include <gpgme.h> /* All GPGME types, constants and functions
95
gpgme_*
96
GPGME_PROTOCOL_OpenPGP,
97
GPG_ERR_NO_* */
98
75
99
#define BUFFER_SIZE 256
76
#define DH_BITS 1024
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
ssize_t pgp_packet_decrypt (char *packet, size_t packet_size,
88
char **new_packet, const char *homedir){
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,
141
const char *homedir){
89
142
gpgme_data_t dh_crypto, dh_plain;
90
143
gpgme_ctx_t ctx;
91
144
gpgme_error_t rc;
92
145
ssize_t ret;
93
ssize_t new_packet_capacity = 0;
94
ssize_t new_packet_length = 0;
146
size_t plaintext_capacity = 0;
147
ssize_t plaintext_length = 0;
95
148
gpgme_engine_info_t engine_info;
96
149
97
150
if (debug){
98
fprintf(stderr, "Trying to decrypt OpenPGP packet\n");
151
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
99
152
}
100
153
101
154
/* Init GPGME */
102
155
gpgme_check_version(NULL);
103
gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
156
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
157
if (rc != GPG_ERR_NO_ERROR){
158
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
159
gpgme_strsource(rc), gpgme_strerror(rc));
160
return -1;
161
}
104
162
105
/* Set GPGME home directory */
163
/* Set GPGME home directory for the OpenPGP engine only */
106
164
rc = gpgme_get_engine_info (&engine_info);
107
165
if (rc != GPG_ERR_NO_ERROR){
108
166
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
118
176
engine_info = engine_info->next;
119
177
}
120
178
if(engine_info == NULL){
121
fprintf(stderr, "Could not set home dir to %s\n", homedir);
179
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
122
180
return -1;
123
181
}
124
182
125
/* Create new GPGME data buffer from packet buffer */
126
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);
127
186
if (rc != GPG_ERR_NO_ERROR){
128
187
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
129
188
gpgme_strsource(rc), gpgme_strerror(rc));
135
194
if (rc != GPG_ERR_NO_ERROR){
136
195
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
137
196
gpgme_strsource(rc), gpgme_strerror(rc));
197
gpgme_data_release(dh_crypto);
138
198
return -1;
139
199
}
140
200
143
203
if (rc != GPG_ERR_NO_ERROR){
144
204
fprintf(stderr, "bad gpgme_new: %s: %s\n",
145
205
gpgme_strsource(rc), gpgme_strerror(rc));
146
return -1;
206
plaintext_length = -1;
207
goto decrypt_end;
147
208
}
148
209
149
/* Decrypt data from the FILE pointer to the plaintext data
150
buffer */
210
/* Decrypt data from the cryptotext data buffer to the plaintext
211
data buffer */
151
212
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
152
213
if (rc != GPG_ERR_NO_ERROR){
153
214
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
154
215
gpgme_strsource(rc), gpgme_strerror(rc));
155
return -1;
216
plaintext_length = -1;
217
goto decrypt_end;
156
218
}
157
219
158
220
if(debug){
159
fprintf(stderr, "Decryption of OpenPGP packet succeeded\n");
221
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
160
222
}
161
223
162
224
if (debug){
163
225
gpgme_decrypt_result_t result;
164
226
result = gpgme_op_decrypt_result(ctx);
167
229
} else {
168
230
fprintf(stderr, "Unsupported algorithm: %s\n",
169
231
result->unsupported_algorithm);
170
fprintf(stderr, "Wrong key usage: %d\n",
232
fprintf(stderr, "Wrong key usage: %u\n",
171
233
result->wrong_key_usage);
172
234
if(result->file_name != NULL){
173
235
fprintf(stderr, "File name: %s\n", result->file_name);
188
250
}
189
251
}
190
252
191
/* Delete the GPGME FILE pointer cryptotext data buffer */
192
gpgme_data_release(dh_crypto);
193
194
253
/* Seek back to the beginning of the GPGME plaintext data buffer */
195
gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET);
196
197
*new_packet = 0;
254
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
255
perror("pgpme_data_seek");
256
plaintext_length = -1;
257
goto decrypt_end;
258
}
259
260
*plaintext = NULL;
198
261
while(true){
199
if (new_packet_length + BUFFER_SIZE > new_packet_capacity){
200
*new_packet = realloc(*new_packet,
201
(unsigned int)new_packet_capacity
202
+ BUFFER_SIZE);
203
if (*new_packet == NULL){
204
perror("realloc");
205
return -1;
206
}
207
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;
208
269
}
209
270
210
ret = gpgme_data_read(dh_plain, *new_packet + new_packet_length,
271
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
211
272
BUFFER_SIZE);
212
273
/* Print the data, if any */
213
274
if (ret == 0){
275
/* EOF */
214
276
break;
215
277
}
216
278
if(ret < 0){
217
279
perror("gpgme_data_read");
218
return -1;
280
plaintext_length = -1;
281
goto decrypt_end;
219
282
}
220
new_packet_length += ret;
283
plaintext_length += ret;
221
284
}
222
285
223
/* FIXME: check characters before printing to screen so to not print
224
terminal control characters */
225
/* if(debug){ */
226
/* fprintf(stderr, "decrypted password is: "); */
227
/* fwrite(*new_packet, 1, new_packet_length, stderr); */
228
/* fprintf(stderr, "\n"); */
229
/* } */
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);
230
298
231
299
/* Delete the GPGME plaintext data buffer */
232
300
gpgme_data_release(dh_plain);
233
return new_packet_length;
301
return plaintext_length;
234
302
}
235
303
236
304
static const char * safer_gnutls_strerror (int value) {
240
308
return ret;
241
309
}
242
310
243
void debuggnutls(__attribute__((unused)) int level,
244
const char* string){
245
fprintf(stderr, "%s", string);
311
/* GnuTLS log function callback */
312
static void debuggnutls(__attribute__((unused)) int level,
313
const char* string){
314
fprintf(stderr, "GnuTLS: %s", string);
246
315
}
247
316
248
int initgnutls(encrypted_session *es){
249
const char *err;
317
static int init_gnutls_global(mandos_context *mc,
318
const char *pubkeyfile,
319
const char *seckeyfile){
250
320
int ret;
251
321
252
322
if(debug){
253
323
fprintf(stderr, "Initializing GnuTLS\n");
254
324
}
255
325
256
if ((ret = gnutls_global_init ())
257
!= GNUTLS_E_SUCCESS) {
258
fprintf (stderr, "global_init: %s\n", safer_gnutls_strerror(ret));
326
ret = gnutls_global_init();
327
if (ret != GNUTLS_E_SUCCESS) {
328
fprintf (stderr, "GnuTLS global_init: %s\n",
329
safer_gnutls_strerror(ret));
259
330
return -1;
260
331
}
261
332
262
333
if (debug){
334
/* "Use a log level over 10 to enable all debugging options."
335
* - GnuTLS manual
336
*/
263
337
gnutls_global_set_log_level(11);
264
338
gnutls_global_set_log_function(debuggnutls);
265
339
}
266
340
267
/* openpgp credentials */
268
if ((ret = gnutls_certificate_allocate_credentials (&es->cred))
269
!= GNUTLS_E_SUCCESS) {
270
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",
271
345
safer_gnutls_strerror(ret));
346
gnutls_global_deinit ();
272
347
return -1;
273
348
}
274
349
275
350
if(debug){
276
351
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
277
" and keyfile %s as GnuTLS credentials\n", CERTFILE,
278
KEYFILE);
352
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
353
seckeyfile);
279
354
}
280
355
281
356
ret = gnutls_certificate_set_openpgp_key_file
282
(es->cred, CERTFILE, KEYFILE, GNUTLS_OPENPGP_FMT_BASE64);
357
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
283
358
if (ret != GNUTLS_E_SUCCESS) {
284
fprintf
285
(stderr, "Error[%d] while reading the OpenPGP key pair ('%s',"
286
" '%s')\n",
287
ret, CERTFILE, KEYFILE);
288
fprintf(stdout, "The Error is: %s\n",
359
fprintf(stderr,
360
"Error[%d] while reading the OpenPGP key pair ('%s',"
361
" '%s')\n", ret, pubkeyfile, seckeyfile);
362
fprintf(stdout, "The GnuTLS error is: %s\n",
289
363
safer_gnutls_strerror(ret));
290
return -1;
291
}
292
293
//GnuTLS server initialization
294
if ((ret = gnutls_dh_params_init (&es->dh_params))
295
!= GNUTLS_E_SUCCESS) {
296
fprintf (stderr, "Error in dh parameter initialization: %s\n",
297
safer_gnutls_strerror(ret));
298
return -1;
299
}
300
301
if ((ret = gnutls_dh_params_generate2 (es->dh_params, DH_BITS))
302
!= GNUTLS_E_SUCCESS) {
303
fprintf (stderr, "Error in prime generation: %s\n",
304
safer_gnutls_strerror(ret));
305
return -1;
306
}
307
308
gnutls_certificate_set_dh_params (es->cred, es->dh_params);
309
310
// GnuTLS session creation
311
if ((ret = gnutls_init (&es->session, GNUTLS_SERVER))
312
!= GNUTLS_E_SUCCESS){
364
goto globalfail;
365
}
366
367
/* GnuTLS server initialization */
368
ret = gnutls_dh_params_init(&mc->dh_params);
369
if (ret != GNUTLS_E_SUCCESS) {
370
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
371
" %s\n", safer_gnutls_strerror(ret));
372
goto globalfail;
373
}
374
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
375
if (ret != GNUTLS_E_SUCCESS) {
376
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
377
safer_gnutls_strerror(ret));
378
goto globalfail;
379
}
380
381
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
382
383
return 0;
384
385
globalfail:
386
387
gnutls_certificate_free_credentials(mc->cred);
388
gnutls_global_deinit();
389
return -1;
390
391
}
392
393
static int init_gnutls_session(mandos_context *mc,
394
gnutls_session_t *session){
395
int ret;
396
/* GnuTLS session creation */
397
ret = gnutls_init(session, GNUTLS_SERVER);
398
if (ret != GNUTLS_E_SUCCESS){
313
399
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
314
400
safer_gnutls_strerror(ret));
315
401
}
316
402
317
if ((ret = gnutls_priority_set_direct (es->session, "NORMAL", &err))
318
!= GNUTLS_E_SUCCESS) {
319
fprintf(stderr, "Syntax error at: %s\n", err);
320
fprintf(stderr, "GnuTLS error: %s\n",
321
safer_gnutls_strerror(ret));
322
return -1;
403
{
404
const char *err;
405
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
406
if (ret != GNUTLS_E_SUCCESS) {
407
fprintf(stderr, "Syntax error at: %s\n", err);
408
fprintf(stderr, "GnuTLS error: %s\n",
409
safer_gnutls_strerror(ret));
410
gnutls_deinit (*session);
411
return -1;
412
}
323
413
}
324
414
325
if ((ret = gnutls_credentials_set
326
(es->session, GNUTLS_CRD_CERTIFICATE, es->cred))
327
!= GNUTLS_E_SUCCESS) {
328
fprintf(stderr, "Error setting a credentials set: %s\n",
415
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
416
mc->cred);
417
if (ret != GNUTLS_E_SUCCESS) {
418
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
329
419
safer_gnutls_strerror(ret));
420
gnutls_deinit (*session);
330
421
return -1;
331
422
}
332
423
333
424
/* ignore client certificate if any. */
334
gnutls_certificate_server_set_request (es->session,
425
gnutls_certificate_server_set_request (*session,
335
426
GNUTLS_CERT_IGNORE);
336
427
337
gnutls_dh_set_prime_bits (es->session, DH_BITS);
428
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
338
429
339
430
return 0;
340
431
}
341
432
342
void empty_log(__attribute__((unused)) AvahiLogLevel level,
343
__attribute__((unused)) const char *txt){}
433
/* Avahi log function callback */
434
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
435
__attribute__((unused)) const char *txt){}
344
436
345
int start_mandos_communication(const char *ip, uint16_t port,
346
unsigned int if_index){
437
/* Called when a Mandos server is found */
438
static int start_mandos_communication(const char *ip, uint16_t port,
439
AvahiIfIndex if_index,
440
mandos_context *mc){
347
441
int ret, tcp_sd;
348
struct sockaddr_in6 to;
349
encrypted_session es;
442
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
350
443
char *buffer = NULL;
351
444
char *decrypted_buffer;
352
445
size_t buffer_length = 0;
353
446
size_t buffer_capacity = 0;
354
447
ssize_t decrypted_buffer_size;
355
size_t written = 0;
448
size_t written;
356
449
int retval = 0;
357
450
char interface[IF_NAMESIZE];
451
gnutls_session_t session;
452
453
ret = init_gnutls_session (mc, &session);
454
if (ret != 0){
455
return -1;
456
}
358
457
359
458
if(debug){
360
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
361
ip, port);
459
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
460
"\n", ip, port);
362
461
}
363
462
364
463
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
366
465
perror("socket");
367
466
return -1;
368
467
}
369
370
if(if_indextoname(if_index, interface) == NULL){
371
if(debug){
468
469
if(debug){
470
if(if_indextoname((unsigned int)if_index, interface) == NULL){
372
471
perror("if_indextoname");
472
return -1;
373
473
}
374
return -1;
375
}
376
377
if(debug){
378
474
fprintf(stderr, "Binding to interface %s\n", interface);
379
475
}
380
476
381
477
memset(&to,0,sizeof(to)); /* Spurious warning */
382
to.sin6_family = AF_INET6;
383
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
478
to.in6.sin6_family = AF_INET6;
479
/* It would be nice to have a way to detect if we were passed an
480
IPv4 address here. Now we assume an IPv6 address. */
481
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
384
482
if (ret < 0 ){
385
483
perror("inet_pton");
386
484
return -1;
387
}
485
}
388
486
if(ret == 0){
389
487
fprintf(stderr, "Bad address: %s\n", ip);
390
488
return -1;
391
489
}
392
to.sin6_port = htons(port); /* Spurious warning */
490
to.in6.sin6_port = htons(port); /* Spurious warning */
393
491
394
to.sin6_scope_id = (uint32_t)if_index;
492
to.in6.sin6_scope_id = (uint32_t)if_index;
395
493
396
494
if(debug){
397
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
398
/* char addrstr[INET6_ADDRSTRLEN]; */
399
/* if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr, */
400
/* sizeof(addrstr)) == NULL){ */
401
/* perror("inet_ntop"); */
402
/* } else { */
403
/* fprintf(stderr, "Really connecting to: %s, port %d\n", */
404
/* addrstr, ntohs(to.sin6_port)); */
405
/* } */
495
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
496
port);
497
char addrstr[INET6_ADDRSTRLEN] = "";
498
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
499
sizeof(addrstr)) == NULL){
500
perror("inet_ntop");
501
} else {
502
if(strcmp(addrstr, ip) != 0){
503
fprintf(stderr, "Canonical address form: %s\n", addrstr);
504
}
505
}
406
506
}
407
507
408
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
508
ret = connect(tcp_sd, &to.in, sizeof(to));
409
509
if (ret < 0){
410
510
perror("connect");
411
511
return -1;
412
512
}
413
414
ret = initgnutls (&es);
415
if (ret != 0){
416
retval = -1;
417
return -1;
513
514
const char *out = mandos_protocol_version;
515
written = 0;
516
while (true){
517
size_t out_size = strlen(out);
518
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
519
out_size - written));
520
if (ret == -1){
521
perror("write");
522
retval = -1;
523
goto mandos_end;
524
}
525
written += (size_t)ret;
526
if(written < out_size){
527
continue;
528
} else {
529
if (out == mandos_protocol_version){
530
written = 0;
531
out = "\r\n";
532
} else {
533
break;
534
}
535
}
418
536
}
419
420
gnutls_transport_set_ptr (es.session,
421
(gnutls_transport_ptr_t) tcp_sd);
422
537
423
538
if(debug){
424
539
fprintf(stderr, "Establishing TLS session with %s\n", ip);
425
540
}
426
541
427
ret = gnutls_handshake (es.session);
542
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
543
544
do{
545
ret = gnutls_handshake (session);
546
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
428
547
429
548
if (ret != GNUTLS_E_SUCCESS){
430
549
if(debug){
431
fprintf(stderr, "\n*** Handshake failed ***\n");
550
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
432
551
gnutls_perror (ret);
433
552
}
434
553
retval = -1;
435
goto exit;
554
goto mandos_end;
436
555
}
437
556
438
//Retrieve OpenPGP packet that contains the wanted password
557
/* Read OpenPGP packet that contains the wanted password */
439
558
440
559
if(debug){
441
560
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
443
562
}
444
563
445
564
while(true){
446
if (buffer_length + BUFFER_SIZE > buffer_capacity){
447
buffer = realloc(buffer, buffer_capacity + BUFFER_SIZE);
448
if (buffer == NULL){
449
perror("realloc");
450
goto exit;
451
}
452
buffer_capacity += BUFFER_SIZE;
565
buffer_capacity = adjustbuffer(&buffer, buffer_length,
566
buffer_capacity);
567
if (buffer_capacity == 0){
568
perror("adjustbuffer");
569
retval = -1;
570
goto mandos_end;
453
571
}
454
572
455
ret = gnutls_record_recv
456
(es.session, buffer+buffer_length, BUFFER_SIZE);
573
ret = gnutls_record_recv(session, buffer+buffer_length,
574
BUFFER_SIZE);
457
575
if (ret == 0){
458
576
break;
459
577
}
463
581
case GNUTLS_E_AGAIN:
464
582
break;
465
583
case GNUTLS_E_REHANDSHAKE:
466
ret = gnutls_handshake (es.session);
584
do{
585
ret = gnutls_handshake (session);
586
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
467
587
if (ret < 0){
468
fprintf(stderr, "\n*** Handshake failed ***\n");
588
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
469
589
gnutls_perror (ret);
470
590
retval = -1;
471
goto exit;
591
goto mandos_end;
472
592
}
473
593
break;
474
594
default:
475
595
fprintf(stderr, "Unknown error while reading data from"
476
" encrypted session with mandos server\n");
596
" encrypted session with Mandos server\n");
477
597
retval = -1;
478
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
479
goto exit;
598
gnutls_bye (session, GNUTLS_SHUT_RDWR);
599
goto mandos_end;
480
600
}
481
601
} else {
482
602
buffer_length += (size_t) ret;
483
603
}
484
604
}
485
605
606
if(debug){
607
fprintf(stderr, "Closing TLS session\n");
608
}
609
610
gnutls_bye (session, GNUTLS_SHUT_RDWR);
611
486
612
if (buffer_length > 0){
487
613
decrypted_buffer_size = pgp_packet_decrypt(buffer,
488
614
buffer_length,
489
615
&decrypted_buffer,
490
CERT_ROOT);
616
keydir);
491
617
if (decrypted_buffer_size >= 0){
618
written = 0;
492
619
while(written < (size_t) decrypted_buffer_size){
493
620
ret = (int)fwrite (decrypted_buffer + written, 1,
494
621
(size_t)decrypted_buffer_size - written,
508
635
retval = -1;
509
636
}
510
637
}
511
512
//shutdown procedure
513
514
if(debug){
515
fprintf(stderr, "Closing TLS session\n");
516
}
517
638
639
/* Shutdown procedure */
640
641
mandos_end:
518
642
free(buffer);
519
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
520
exit:
521
643
close(tcp_sd);
522
gnutls_deinit (es.session);
523
gnutls_certificate_free_credentials (es.cred);
524
gnutls_global_deinit ();
644
gnutls_deinit (session);
525
645
return retval;
526
646
}
527
647
528
static AvahiSimplePoll *simple_poll = NULL;
529
static AvahiServer *server = NULL;
530
531
static void resolve_callback(
532
AvahiSServiceResolver *r,
533
AvahiIfIndex interface,
534
AVAHI_GCC_UNUSED AvahiProtocol protocol,
535
AvahiResolverEvent event,
536
const char *name,
537
const char *type,
538
const char *domain,
539
const char *host_name,
540
const AvahiAddress *address,
541
uint16_t port,
542
AVAHI_GCC_UNUSED AvahiStringList *txt,
543
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
544
AVAHI_GCC_UNUSED void* userdata) {
545
648
static void resolve_callback(AvahiSServiceResolver *r,
649
AvahiIfIndex interface,
650
AVAHI_GCC_UNUSED AvahiProtocol protocol,
651
AvahiResolverEvent event,
652
const char *name,
653
const char *type,
654
const char *domain,
655
const char *host_name,
656
const AvahiAddress *address,
657
uint16_t port,
658
AVAHI_GCC_UNUSED AvahiStringList *txt,
659
AVAHI_GCC_UNUSED AvahiLookupResultFlags
660
flags,
661
void* userdata) {
662
mandos_context *mc = userdata;
546
663
assert(r); /* Spurious warning */
547
664
548
665
/* Called whenever a service has been resolved successfully or
551
668
switch (event) {
552
669
default:
553
670
case AVAHI_RESOLVER_FAILURE:
554
fprintf(stderr, "(Resolver) Failed to resolve service '%s' of"
555
" type '%s' in domain '%s': %s\n", name, type, domain,
556
avahi_strerror(avahi_server_errno(server)));
671
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
672
" of type '%s' in domain '%s': %s\n", name, type, domain,
673
avahi_strerror(avahi_server_errno(mc->server)));
557
674
break;
558
675
559
676
case AVAHI_RESOLVER_FOUND:
561
678
char ip[AVAHI_ADDRESS_STR_MAX];
562
679
avahi_address_snprint(ip, sizeof(ip), address);
563
680
if(debug){
564
fprintf(stderr, "Mandos server \"%s\" found on %s (%s) on"
565
" port %d\n", name, host_name, ip, port);
681
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
682
PRIu16 ") on port %d\n", name, host_name, ip,
683
interface, port);
566
684
}
567
int ret = start_mandos_communication(ip, port,
568
(unsigned int) interface);
685
int ret = start_mandos_communication(ip, port, interface, mc);
569
686
if (ret == 0){
570
687
exit(EXIT_SUCCESS);
571
688
}
574
691
avahi_s_service_resolver_free(r);
575
692
}
576
693
577
static void browse_callback(
578
AvahiSServiceBrowser *b,
579
AvahiIfIndex interface,
580
AvahiProtocol protocol,
581
AvahiBrowserEvent event,
582
const char *name,
583
const char *type,
584
const char *domain,
585
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
586
void* userdata) {
587
588
AvahiServer *s = userdata;
589
assert(b); /* Spurious warning */
590
591
/* Called whenever a new services becomes available on the LAN or
592
is removed from the LAN */
593
594
switch (event) {
595
default:
596
case AVAHI_BROWSER_FAILURE:
597
598
fprintf(stderr, "(Browser) %s\n",
599
avahi_strerror(avahi_server_errno(server)));
600
avahi_simple_poll_quit(simple_poll);
601
return;
602
603
case AVAHI_BROWSER_NEW:
604
/* We ignore the returned resolver object. In the callback
605
function we free it. If the server is terminated before
606
the callback function is called the server will free
607
the resolver for us. */
608
609
if (!(avahi_s_service_resolver_new(s, interface, protocol, name,
610
type, domain,
611
AVAHI_PROTO_INET6, 0,
612
resolve_callback, s)))
613
fprintf(stderr, "Failed to resolve service '%s': %s\n", name,
614
avahi_strerror(avahi_server_errno(s)));
615
break;
616
617
case AVAHI_BROWSER_REMOVE:
618
break;
619
620
case AVAHI_BROWSER_ALL_FOR_NOW:
621
case AVAHI_BROWSER_CACHE_EXHAUSTED:
622
break;
694
static void browse_callback( AvahiSServiceBrowser *b,
695
AvahiIfIndex interface,
696
AvahiProtocol protocol,
697
AvahiBrowserEvent event,
698
const char *name,
699
const char *type,
700
const char *domain,
701
AVAHI_GCC_UNUSED AvahiLookupResultFlags
702
flags,
703
void* userdata) {
704
mandos_context *mc = userdata;
705
assert(b); /* Spurious warning */
706
707
/* Called whenever a new services becomes available on the LAN or
708
is removed from the LAN */
709
710
switch (event) {
711
default:
712
case AVAHI_BROWSER_FAILURE:
713
714
fprintf(stderr, "(Avahi browser) %s\n",
715
avahi_strerror(avahi_server_errno(mc->server)));
716
avahi_simple_poll_quit(mc->simple_poll);
717
return;
718
719
case AVAHI_BROWSER_NEW:
720
/* We ignore the returned Avahi resolver object. In the callback
721
function we free it. If the Avahi server is terminated before
722
the callback function is called the Avahi server will free the
723
resolver for us. */
724
725
if (!(avahi_s_service_resolver_new(mc->server, interface,
726
protocol, name, type, domain,
727
AVAHI_PROTO_INET6, 0,
728
resolve_callback, mc)))
729
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
730
name, avahi_strerror(avahi_server_errno(mc->server)));
731
break;
732
733
case AVAHI_BROWSER_REMOVE:
734
break;
735
736
case AVAHI_BROWSER_ALL_FOR_NOW:
737
case AVAHI_BROWSER_CACHE_EXHAUSTED:
738
if(debug){
739
fprintf(stderr, "No Mandos server found, still searching...\n");
623
740
}
624
}
625
626
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
627
AvahiServerConfig config;
741
break;
742
}
743
}
744
745
/* Combines file name and path and returns the malloced new
746
string. some sane checks could/should be added */
747
static const char *combinepath(const char *first, const char *second){
748
size_t f_len = strlen(first);
749
size_t s_len = strlen(second);
750
char *tmp = malloc(f_len + s_len + 2);
751
if (tmp == NULL){
752
return NULL;
753
}
754
if(f_len > 0){
755
memcpy(tmp, first, f_len); /* Spurious warning */
756
}
757
tmp[f_len] = '/';
758
if(s_len > 0){
759
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
760
}
761
tmp[f_len + 1 + s_len] = '\0';
762
return tmp;
763
}
764
765
766
int main(int argc, char *argv[]){
628
767
AvahiSServiceBrowser *sb = NULL;
629
768
int error;
630
769
int ret;
631
int returncode = EXIT_SUCCESS;
770
int exitcode = EXIT_SUCCESS;
632
771
const char *interface = "eth0";
633
unsigned int if_index;
772
struct ifreq network;
773
int sd;
774
uid_t uid;
775
gid_t gid;
634
776
char *connect_to = NULL;
635
636
while (true){
637
static struct option long_options[] = {
638
{"debug", no_argument, (int *)&debug, 1},
639
{"connect", required_argument, 0, 'c'},
640
{"interface", required_argument, 0, 'i'},
641
{0, 0, 0, 0} };
642
643
int option_index = 0;
644
ret = getopt_long (argc, argv, "i:", long_options,
645
&option_index);
646
647
if (ret == -1){
648
break;
649
}
650
651
switch(ret){
652
case 0:
653
break;
654
case 'i':
655
interface = optarg;
656
break;
657
case 'c':
658
connect_to = optarg;
659
break;
660
default:
661
exit(EXIT_FAILURE);
662
}
663
}
664
665
if_index = if_nametoindex(interface);
777
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
778
const char *pubkeyfile = "pubkey.txt";
779
const char *seckeyfile = "seckey.txt";
780
mandos_context mc = { .simple_poll = NULL, .server = NULL,
781
.dh_bits = 1024, .priority = "SECURE256"};
782
bool gnutls_initalized = false;
783
784
{
785
struct argp_option options[] = {
786
{ .name = "debug", .key = 128,
787
.doc = "Debug mode", .group = 3 },
788
{ .name = "connect", .key = 'c',
789
.arg = "IP",
790
.doc = "Connect directly to a sepcified mandos server",
791
.group = 1 },
792
{ .name = "interface", .key = 'i',
793
.arg = "INTERFACE",
794
.doc = "Interface that Avahi will conntect through",
795
.group = 1 },
796
{ .name = "keydir", .key = 'd',
797
.arg = "KEYDIR",
798
.doc = "Directory where the openpgp keyring is",
799
.group = 1 },
800
{ .name = "seckey", .key = 's',
801
.arg = "SECKEY",
802
.doc = "Secret openpgp key for gnutls authentication",
803
.group = 1 },
804
{ .name = "pubkey", .key = 'p',
805
.arg = "PUBKEY",
806
.doc = "Public openpgp key for gnutls authentication",
807
.group = 2 },
808
{ .name = "dh-bits", .key = 129,
809
.arg = "BITS",
810
.doc = "dh-bits to use in gnutls communication",
811
.group = 2 },
812
{ .name = "priority", .key = 130,
813
.arg = "PRIORITY",
814
.doc = "GNUTLS priority", .group = 1 },
815
{ .name = NULL }
816
};
817
818
819
error_t parse_opt (int key, char *arg,
820
struct argp_state *state) {
821
/* Get the INPUT argument from `argp_parse', which we know is
822
a pointer to our plugin list pointer. */
823
switch (key) {
824
case 128:
825
debug = true;
826
break;
827
case 'c':
828
connect_to = arg;
829
break;
830
case 'i':
831
interface = arg;
832
break;
833
case 'd':
834
keydir = arg;
835
break;
836
case 's':
837
seckeyfile = arg;
838
break;
839
case 'p':
840
pubkeyfile = arg;
841
break;
842
case 129:
843
errno = 0;
844
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
845
if (errno){
846
perror("strtol");
847
exit(EXIT_FAILURE);
848
}
849
break;
850
case 130:
851
mc.priority = arg;
852
break;
853
case ARGP_KEY_ARG:
854
argp_usage (state);
855
break;
856
case ARGP_KEY_END:
857
break;
858
default:
859
return ARGP_ERR_UNKNOWN;
860
}
861
return 0;
862
}
863
864
struct argp argp = { .options = options, .parser = parse_opt,
865
.args_doc = "",
866
.doc = "Mandos client -- Get and decrypt"
867
" passwords from mandos server" };
868
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
869
if (ret == ARGP_ERR_UNKNOWN){
870
fprintf(stderr, "Unkown error while parsing arguments\n");
871
exitcode = EXIT_FAILURE;
872
goto end;
873
}
874
}
875
876
pubkeyfile = combinepath(keydir, pubkeyfile);
877
if (pubkeyfile == NULL){
878
perror("combinepath");
879
exitcode = EXIT_FAILURE;
880
goto end;
881
}
882
883
seckeyfile = combinepath(keydir, seckeyfile);
884
if (seckeyfile == NULL){
885
perror("combinepath");
886
goto end;
887
}
888
889
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
890
if (ret == -1){
891
fprintf(stderr, "init_gnutls_global\n");
892
goto end;
893
} else {
894
gnutls_initalized = true;
895
}
896
897
uid = getuid();
898
gid = getgid();
899
900
ret = setuid(uid);
901
if (ret == -1){
902
perror("setuid");
903
}
904
905
setgid(gid);
906
if (ret == -1){
907
perror("setgid");
908
}
909
910
if_index = (AvahiIfIndex) if_nametoindex(interface);
666
911
if(if_index == 0){
667
912
fprintf(stderr, "No such interface: \"%s\"\n", interface);
668
913
exit(EXIT_FAILURE);
674
919
char *address = strrchr(connect_to, ':');
675
920
if(address == NULL){
676
921
fprintf(stderr, "No colon in address\n");
677
exit(EXIT_FAILURE);
922
exitcode = EXIT_FAILURE;
923
goto end;
678
924
}
679
925
errno = 0;
680
926
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
681
927
if(errno){
682
928
perror("Bad port number");
683
exit(EXIT_FAILURE);
929
exitcode = EXIT_FAILURE;
930
goto end;
684
931
}
685
932
*address = '\0';
686
933
address = connect_to;
687
ret = start_mandos_communication(address, port, if_index);
934
ret = start_mandos_communication(address, port, if_index, &mc);
688
935
if(ret < 0){
689
exit(EXIT_FAILURE);
936
exitcode = EXIT_FAILURE;
690
937
} else {
691
exit(EXIT_SUCCESS);
692
}
938
exitcode = EXIT_SUCCESS;
939
}
940
goto end;
941
}
942
943
/* If the interface is down, bring it up */
944
{
945
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
946
if(sd < 0) {
947
perror("socket");
948
exitcode = EXIT_FAILURE;
949
goto end;
950
}
951
strcpy(network.ifr_name, interface); /* Spurious warning */
952
ret = ioctl(sd, SIOCGIFFLAGS, &network);
953
if(ret == -1){
954
perror("ioctl SIOCGIFFLAGS");
955
exitcode = EXIT_FAILURE;
956
goto end;
957
}
958
if((network.ifr_flags & IFF_UP) == 0){
959
network.ifr_flags |= IFF_UP;
960
ret = ioctl(sd, SIOCSIFFLAGS, &network);
961
if(ret == -1){
962
perror("ioctl SIOCSIFFLAGS");
963
exitcode = EXIT_FAILURE;
964
goto end;
965
}
966
}
967
close(sd);
693
968
}
694
969
695
970
if (not debug){
696
971
avahi_set_log_function(empty_log);
697
972
}
698
973
699
/* Initialize the psuedo-RNG */
974
/* Initialize the pseudo-RNG for Avahi */
700
975
srand((unsigned int) time(NULL));
701
702
/* Allocate main loop object */
703
if (!(simple_poll = avahi_simple_poll_new())) {
704
fprintf(stderr, "Failed to create simple poll object.\n");
705
706
goto exit;
707
}
708
709
/* Do not publish any local records */
710
avahi_server_config_init(&config);
711
config.publish_hinfo = 0;
712
config.publish_addresses = 0;
713
config.publish_workstation = 0;
714
config.publish_domain = 0;
715
716
/* Allocate a new server */
717
server = avahi_server_new(avahi_simple_poll_get(simple_poll),
718
&config, NULL, NULL, &error);
719
720
/* Free the configuration data */
721
avahi_server_config_free(&config);
722
723
/* Check if creating the server object succeeded */
724
if (!server) {
725
fprintf(stderr, "Failed to create server: %s\n",
976
977
/* Allocate main Avahi loop object */
978
mc.simple_poll = avahi_simple_poll_new();
979
if (mc.simple_poll == NULL) {
980
fprintf(stderr, "Avahi: Failed to create simple poll"
981
" object.\n");
982
exitcode = EXIT_FAILURE;
983
goto end;
984
}
985
986
{
987
AvahiServerConfig config;
988
/* Do not publish any local Zeroconf records */
989
avahi_server_config_init(&config);
990
config.publish_hinfo = 0;
991
config.publish_addresses = 0;
992
config.publish_workstation = 0;
993
config.publish_domain = 0;
994
995
/* Allocate a new server */
996
mc.server = avahi_server_new(avahi_simple_poll_get
997
(mc.simple_poll), &config, NULL,
998
NULL, &error);
999
1000
/* Free the Avahi configuration data */
1001
avahi_server_config_free(&config);
1002
}
1003
1004
/* Check if creating the Avahi server object succeeded */
1005
if (mc.server == NULL) {
1006
fprintf(stderr, "Failed to create Avahi server: %s\n",
726
1007
avahi_strerror(error));
727
returncode = EXIT_FAILURE;
728
goto exit;
1008
exitcode = EXIT_FAILURE;
1009
goto end;
729
1010
}
730
1011
731
/* Create the service browser */
732
sb = avahi_s_service_browser_new(server, (AvahiIfIndex)if_index,
1012
/* Create the Avahi service browser */
1013
sb = avahi_s_service_browser_new(mc.server, if_index,
733
1014
AVAHI_PROTO_INET6,
734
1015
"_mandos._tcp", NULL, 0,
735
browse_callback, server);
736
if (!sb) {
1016
browse_callback, &mc);
1017
if (sb == NULL) {
737
1018
fprintf(stderr, "Failed to create service browser: %s\n",
738
avahi_strerror(avahi_server_errno(server)));
739
returncode = EXIT_FAILURE;
740
goto exit;
1019
avahi_strerror(avahi_server_errno(mc.server)));
1020
exitcode = EXIT_FAILURE;
1021
goto end;
741
1022
}
742
1023
743
1024
/* Run the main loop */
744
1025
745
1026
if (debug){
746
fprintf(stderr, "Starting avahi loop search\n");
1027
fprintf(stderr, "Starting Avahi loop search\n");
747
1028
}
748
1029
749
avahi_simple_poll_loop(simple_poll);
1030
avahi_simple_poll_loop(mc.simple_poll);
750
1031
751
exit:
1032
end:
752
1033
753
1034
if (debug){
754
1035
fprintf(stderr, "%s exiting\n", argv[0]);
755
1036
}
756
1037
757
1038
/* Cleanup things */
758
if (sb)
1039
if (sb != NULL)
759
1040
avahi_s_service_browser_free(sb);
760
1041
761
if (server)
762
avahi_server_free(server);
763
764
if (simple_poll)
765
avahi_simple_poll_free(simple_poll);
766
767
return returncode;
1042
if (mc.server != NULL)
1043
avahi_server_free(mc.server);
1044
1045
if (mc.simple_poll != NULL)
1046
avahi_simple_poll_free(mc.simple_poll);
1047
free(pubkeyfile);
1048
free(seckeyfile);
1049
1050
if (gnutls_initalized){
1051
gnutls_certificate_free_credentials(mc.cred);
1052
gnutls_global_deinit ();
1053
}
1054
1055
return exitcode;
768
1056
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0