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- Committer: Teddy Hogeborn
- Date: 2008-09-06 17:24:58 UTC
- Revision ID: teddy@fukt.bsnet.se-20080906172458-2x5wlfkn7oqckt1y
* legalnotice.xml: Copy DocBook 4.4-formatted text from
<http://www.gnu.org/licenses/gpl-3.0.dbk>.
<http://www.gnu.org/licenses/gpl-3.0.dbk>.
- files added:
- .bzrignore
- files removed:
- ca.pem
- files renamed:
- server.py => mandos
- server.conf => mandos.conf
- plugbasedclient.c => plugin-runner.c
- plugins.d/mandosclient.c => plugins.d/mandos-client.c
- plugins.d/passprompt.c => plugins.d/password-prompt.c
- files modified:
- Makefile
added
removed
plugins.d/mandos-client.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,
41
SIOCSIFFLAGS */
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, open(), opendir(), DIR */
51
#include <sys/stat.h> /* open() */
52
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
53
struct in6_addr, inet_pton(),
54
connect() */
55
#include <fcntl.h> /* open() */
56
#include <dirent.h> /* opendir(), struct dirent, readdir() */
57
#include <inttypes.h> /* PRIu16 */
58
#include <assert.h> /* assert() */
59
#include <errno.h> /* perror(), errno */
60
#include <time.h> /* time() */
42
61
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
43
SIOCSIFFLAGS */
62
SIOCSIFFLAGS, if_indextoname(),
63
if_nametoindex(), IF_NAMESIZE */
64
#include <netinet/in.h>
65
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
66
getuid(), getgid(), setuid(),
67
setgid() */
68
#include <arpa/inet.h> /* inet_pton(), htons */
69
#include <iso646.h> /* not, and */
70
#include <argp.h> /* struct argp_option, error_t, struct
71
argp_state, struct argp,
72
argp_parse(), ARGP_KEY_ARG,
73
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
44
74
75
/* Avahi */
76
/* All Avahi types, constants and functions
77
Avahi*, avahi_*,
78
AVAHI_* */
45
79
#include <avahi-core/core.h>
46
80
#include <avahi-core/lookup.h>
47
81
#include <avahi-core/log.h>
49
83
#include <avahi-common/malloc.h>
50
84
#include <avahi-common/error.h>
51
85
52
//mandos client part
53
#include <sys/types.h> /* socket(), inet_pton() */
54
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
55
struct in6_addr, inet_pton() */
56
#include <gnutls/gnutls.h> /* All GnuTLS stuff */
57
#include <gnutls/openpgp.h> /* GnuTLS with openpgp stuff */
58
59
#include <unistd.h> /* close() */
60
#include <netinet/in.h>
61
#include <stdbool.h> /* true */
62
#include <string.h> /* memset */
63
#include <arpa/inet.h> /* inet_pton() */
64
#include <iso646.h> /* not */
65
66
// gpgme
67
#include <errno.h> /* perror() */
68
#include <gpgme.h>
69
70
// getopt_long
71
#include <getopt.h>
86
/* GnuTLS */
87
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
88
functions:
89
gnutls_*
90
init_gnutls_session(),
91
GNUTLS_* */
92
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
93
GNUTLS_OPENPGP_FMT_BASE64 */
94
95
/* GPGME */
96
#include <gpgme.h> /* All GPGME types, constants and
97
functions:
98
gpgme_*
99
GPGME_PROTOCOL_OpenPGP,
100
GPG_ERR_NO_* */
72
101
73
102
#define BUFFER_SIZE 256
74
103
75
static const char *keydir = "/conf/conf.d/mandos";
76
static const char *pubkeyfile = "pubkey.txt";
77
static const char *seckeyfile = "seckey.txt";
104
/*
105
#define PATHDIR "/conf/conf.d/mandos"
106
*/
107
108
#define PATHDIR "/conf/conf.d/mandos"
109
#define SECKEY "seckey.txt"
110
#define PUBKEY "pubkey.txt"
78
111
79
112
bool debug = false;
113
static const char mandos_protocol_version[] = "1";
114
const char *argp_program_version = "mandos-client 1.0";
115
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
80
116
81
/* Used for passing in values through all the callback functions */
117
/* Used for passing in values through the Avahi callback functions */
82
118
typedef struct {
83
119
AvahiSimplePoll *simple_poll;
84
120
AvahiServer *server;
85
121
gnutls_certificate_credentials_t cred;
86
122
unsigned int dh_bits;
123
gnutls_dh_params_t dh_params;
87
124
const char *priority;
125
gpgme_ctx_t ctx;
88
126
} mandos_context;
89
127
128
/*
129
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
130
* "buffer_capacity" is how much is currently allocated,
131
* "buffer_length" is how much is already used.
132
*/
133
size_t adjustbuffer(char **buffer, size_t buffer_length,
134
size_t buffer_capacity){
135
if (buffer_length + BUFFER_SIZE > buffer_capacity){
136
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
137
if (buffer == NULL){
138
return 0;
139
}
140
buffer_capacity += BUFFER_SIZE;
141
}
142
return buffer_capacity;
143
}
144
90
145
/*
91
* Decrypt OpenPGP data using keyrings in HOMEDIR.
92
* Returns -1 on error
146
* Initialize GPGME.
93
147
*/
94
static ssize_t pgp_packet_decrypt (const char *cryptotext,
95
size_t crypto_size,
96
char **plaintext,
97
const char *homedir){
98
gpgme_data_t dh_crypto, dh_plain;
99
gpgme_ctx_t ctx;
148
static bool init_gpgme(mandos_context *mc, const char *seckey,
149
const char *pubkey, const char *tempdir){
150
int ret;
100
151
gpgme_error_t rc;
101
ssize_t ret;
102
ssize_t plaintext_capacity = 0;
103
ssize_t plaintext_length = 0;
104
152
gpgme_engine_info_t engine_info;
105
153
154
155
/*
156
* Helper function to insert pub and seckey to the enigne keyring.
157
*/
158
bool import_key(const char *filename){
159
int fd;
160
gpgme_data_t pgp_data;
161
162
fd = TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
163
if(fd == -1){
164
perror("open");
165
return false;
166
}
167
168
rc = gpgme_data_new_from_fd(&pgp_data, fd);
169
if (rc != GPG_ERR_NO_ERROR){
170
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
171
gpgme_strsource(rc), gpgme_strerror(rc));
172
return false;
173
}
174
175
rc = gpgme_op_import(mc->ctx, pgp_data);
176
if (rc != GPG_ERR_NO_ERROR){
177
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
178
gpgme_strsource(rc), gpgme_strerror(rc));
179
return false;
180
}
181
182
ret = TEMP_FAILURE_RETRY(close(fd));
183
if(ret == -1){
184
perror("close");
185
}
186
gpgme_data_release(pgp_data);
187
return true;
188
}
189
106
190
if (debug){
107
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
191
fprintf(stderr, "Initialize gpgme\n");
108
192
}
109
193
110
194
/* Init GPGME */
113
197
if (rc != GPG_ERR_NO_ERROR){
114
198
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
115
199
gpgme_strsource(rc), gpgme_strerror(rc));
116
return -1;
200
return false;
117
201
}
118
202
119
/* Set GPGME home directory for the OpenPGP engine only */
203
/* Set GPGME home directory for the OpenPGP engine only */
120
204
rc = gpgme_get_engine_info (&engine_info);
121
205
if (rc != GPG_ERR_NO_ERROR){
122
206
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
123
207
gpgme_strsource(rc), gpgme_strerror(rc));
124
return -1;
208
return false;
125
209
}
126
210
while(engine_info != NULL){
127
211
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
128
212
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
129
engine_info->file_name, homedir);
213
engine_info->file_name, tempdir);
130
214
break;
131
215
}
132
216
engine_info = engine_info->next;
133
217
}
134
218
if(engine_info == NULL){
135
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
136
return -1;
219
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
220
return false;
221
}
222
223
/* Create new GPGME "context" */
224
rc = gpgme_new(&(mc->ctx));
225
if (rc != GPG_ERR_NO_ERROR){
226
fprintf(stderr, "bad gpgme_new: %s: %s\n",
227
gpgme_strsource(rc), gpgme_strerror(rc));
228
return false;
229
}
230
231
if (not import_key(pubkey) or not import_key(seckey)){
232
return false;
233
}
234
235
return true;
236
}
237
238
/*
239
* Decrypt OpenPGP data.
240
* Returns -1 on error
241
*/
242
static ssize_t pgp_packet_decrypt (const mandos_context *mc,
243
const char *cryptotext,
244
size_t crypto_size,
245
char **plaintext){
246
gpgme_data_t dh_crypto, dh_plain;
247
gpgme_error_t rc;
248
ssize_t ret;
249
size_t plaintext_capacity = 0;
250
ssize_t plaintext_length = 0;
251
252
if (debug){
253
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
137
254
}
138
255
139
256
/* Create new GPGME data buffer from memory cryptotext */
154
271
return -1;
155
272
}
156
273
157
/* Create new GPGME "context" */
158
rc = gpgme_new(&ctx);
159
if (rc != GPG_ERR_NO_ERROR){
160
fprintf(stderr, "bad gpgme_new: %s: %s\n",
161
gpgme_strsource(rc), gpgme_strerror(rc));
162
plaintext_length = -1;
163
goto decrypt_end;
164
}
165
166
274
/* Decrypt data from the cryptotext data buffer to the plaintext
167
275
data buffer */
168
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
276
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
169
277
if (rc != GPG_ERR_NO_ERROR){
170
278
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
171
279
gpgme_strsource(rc), gpgme_strerror(rc));
172
280
plaintext_length = -1;
281
if (debug){
282
gpgme_decrypt_result_t result;
283
result = gpgme_op_decrypt_result(mc->ctx);
284
if (result == NULL){
285
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
286
} else {
287
fprintf(stderr, "Unsupported algorithm: %s\n",
288
result->unsupported_algorithm);
289
fprintf(stderr, "Wrong key usage: %u\n",
290
result->wrong_key_usage);
291
if(result->file_name != NULL){
292
fprintf(stderr, "File name: %s\n", result->file_name);
293
}
294
gpgme_recipient_t recipient;
295
recipient = result->recipients;
296
if(recipient){
297
while(recipient != NULL){
298
fprintf(stderr, "Public key algorithm: %s\n",
299
gpgme_pubkey_algo_name(recipient->pubkey_algo));
300
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
301
fprintf(stderr, "Secret key available: %s\n",
302
recipient->status == GPG_ERR_NO_SECKEY
303
? "No" : "Yes");
304
recipient = recipient->next;
305
}
306
}
307
}
308
}
173
309
goto decrypt_end;
174
310
}
175
311
177
313
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
178
314
}
179
315
180
if (debug){
181
gpgme_decrypt_result_t result;
182
result = gpgme_op_decrypt_result(ctx);
183
if (result == NULL){
184
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
185
} else {
186
fprintf(stderr, "Unsupported algorithm: %s\n",
187
result->unsupported_algorithm);
188
fprintf(stderr, "Wrong key usage: %d\n",
189
result->wrong_key_usage);
190
if(result->file_name != NULL){
191
fprintf(stderr, "File name: %s\n", result->file_name);
192
}
193
gpgme_recipient_t recipient;
194
recipient = result->recipients;
195
if(recipient){
196
while(recipient != NULL){
197
fprintf(stderr, "Public key algorithm: %s\n",
198
gpgme_pubkey_algo_name(recipient->pubkey_algo));
199
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
200
fprintf(stderr, "Secret key available: %s\n",
201
recipient->status == GPG_ERR_NO_SECKEY
202
? "No" : "Yes");
203
recipient = recipient->next;
204
}
205
}
206
}
207
}
208
209
316
/* Seek back to the beginning of the GPGME plaintext data buffer */
210
317
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
211
318
perror("pgpme_data_seek");
215
322
216
323
*plaintext = NULL;
217
324
while(true){
218
if (plaintext_length + BUFFER_SIZE > plaintext_capacity){
219
*plaintext = realloc(*plaintext,
220
(unsigned int)plaintext_capacity
221
+ BUFFER_SIZE);
222
if (*plaintext == NULL){
223
perror("realloc");
325
plaintext_capacity = adjustbuffer(plaintext,
326
(size_t)plaintext_length,
327
plaintext_capacity);
328
if (plaintext_capacity == 0){
329
perror("adjustbuffer");
224
330
plaintext_length = -1;
225
331
goto decrypt_end;
226
}
227
plaintext_capacity += BUFFER_SIZE;
228
332
}
229
333
230
334
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
241
345
}
242
346
plaintext_length += ret;
243
347
}
244
348
245
349
if(debug){
246
350
fprintf(stderr, "Decrypted password is: ");
247
for(size_t i = 0; i < plaintext_length; i++){
351
for(ssize_t i = 0; i < plaintext_length; i++){
248
352
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
249
353
}
250
354
fprintf(stderr, "\n");
261
365
}
262
366
263
367
static const char * safer_gnutls_strerror (int value) {
264
const char *ret = gnutls_strerror (value);
368
const char *ret = gnutls_strerror (value); /* Spurious warning */
265
369
if (ret == NULL)
266
370
ret = "(unknown)";
267
371
return ret;
268
372
}
269
373
374
/* GnuTLS log function callback */
270
375
static void debuggnutls(__attribute__((unused)) int level,
271
376
const char* string){
272
fprintf(stderr, "%s", string);
377
fprintf(stderr, "GnuTLS: %s", string);
273
378
}
274
379
275
static int initgnutls(mandos_context *mc, gnutls_session_t *session,
276
gnutls_dh_params_t *dh_params){
277
const char *err;
380
static int init_gnutls_global(mandos_context *mc,
381
const char *pubkeyfilename,
382
const char *seckeyfilename){
278
383
int ret;
279
384
280
385
if(debug){
281
386
fprintf(stderr, "Initializing GnuTLS\n");
282
387
}
283
284
if ((ret = gnutls_global_init ())
285
!= GNUTLS_E_SUCCESS) {
286
fprintf (stderr, "global_init: %s\n", safer_gnutls_strerror(ret));
388
389
ret = gnutls_global_init();
390
if (ret != GNUTLS_E_SUCCESS) {
391
fprintf (stderr, "GnuTLS global_init: %s\n",
392
safer_gnutls_strerror(ret));
287
393
return -1;
288
394
}
289
395
290
396
if (debug){
397
/* "Use a log level over 10 to enable all debugging options."
398
* - GnuTLS manual
399
*/
291
400
gnutls_global_set_log_level(11);
292
401
gnutls_global_set_log_function(debuggnutls);
293
402
}
294
403
295
/* openpgp credentials */
296
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
297
!= GNUTLS_E_SUCCESS) {
298
fprintf (stderr, "memory error: %s\n",
404
/* OpenPGP credentials */
405
gnutls_certificate_allocate_credentials(&mc->cred);
406
if (ret != GNUTLS_E_SUCCESS){
407
fprintf (stderr, "GnuTLS memory error: %s\n", /* Spurious
408
warning */
299
409
safer_gnutls_strerror(ret));
410
gnutls_global_deinit ();
300
411
return -1;
301
412
}
302
413
303
414
if(debug){
304
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
305
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
306
seckeyfile);
415
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
416
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
417
seckeyfilename);
307
418
}
308
419
309
420
ret = gnutls_certificate_set_openpgp_key_file
310
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
421
(mc->cred, pubkeyfilename, seckeyfilename,
422
GNUTLS_OPENPGP_FMT_BASE64);
311
423
if (ret != GNUTLS_E_SUCCESS) {
312
fprintf
313
(stderr, "Error[%d] while reading the OpenPGP key pair ('%s',"
314
" '%s')\n",
315
ret, pubkeyfile, seckeyfile);
316
fprintf(stdout, "The Error is: %s\n",
424
fprintf(stderr,
425
"Error[%d] while reading the OpenPGP key pair ('%s',"
426
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
427
fprintf(stderr, "The GnuTLS error is: %s\n",
317
428
safer_gnutls_strerror(ret));
318
return -1;
319
}
320
321
//GnuTLS server initialization
322
if ((ret = gnutls_dh_params_init(dh_params))
323
!= GNUTLS_E_SUCCESS) {
324
fprintf (stderr, "Error in dh parameter initialization: %s\n",
325
safer_gnutls_strerror(ret));
326
return -1;
327
}
328
329
if ((ret = gnutls_dh_params_generate2(*dh_params, mc->dh_bits))
330
!= GNUTLS_E_SUCCESS) {
331
fprintf (stderr, "Error in prime generation: %s\n",
332
safer_gnutls_strerror(ret));
333
return -1;
334
}
335
336
gnutls_certificate_set_dh_params(mc->cred, *dh_params);
337
338
// GnuTLS session creation
339
if ((ret = gnutls_init(session, GNUTLS_SERVER))
340
!= GNUTLS_E_SUCCESS){
429
goto globalfail;
430
}
431
432
/* GnuTLS server initialization */
433
ret = gnutls_dh_params_init(&mc->dh_params);
434
if (ret != GNUTLS_E_SUCCESS) {
435
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
436
" %s\n", safer_gnutls_strerror(ret));
437
goto globalfail;
438
}
439
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
440
if (ret != GNUTLS_E_SUCCESS) {
441
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
442
safer_gnutls_strerror(ret));
443
goto globalfail;
444
}
445
446
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
447
448
return 0;
449
450
globalfail:
451
452
gnutls_certificate_free_credentials(mc->cred);
453
gnutls_global_deinit();
454
return -1;
455
}
456
457
static int init_gnutls_session(mandos_context *mc,
458
gnutls_session_t *session){
459
int ret;
460
/* GnuTLS session creation */
461
ret = gnutls_init(session, GNUTLS_SERVER);
462
if (ret != GNUTLS_E_SUCCESS){
341
463
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
342
464
safer_gnutls_strerror(ret));
343
465
}
344
466
345
if ((ret = gnutls_priority_set_direct(*session, mc->priority, &err))
346
!= GNUTLS_E_SUCCESS) {
347
fprintf(stderr, "Syntax error at: %s\n", err);
348
fprintf(stderr, "GnuTLS error: %s\n",
349
safer_gnutls_strerror(ret));
350
return -1;
467
{
468
const char *err;
469
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
470
if (ret != GNUTLS_E_SUCCESS) {
471
fprintf(stderr, "Syntax error at: %s\n", err);
472
fprintf(stderr, "GnuTLS error: %s\n",
473
safer_gnutls_strerror(ret));
474
gnutls_deinit (*session);
475
return -1;
476
}
351
477
}
352
478
353
if ((ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
354
mc->cred))
355
!= GNUTLS_E_SUCCESS) {
356
fprintf(stderr, "Error setting a credentials set: %s\n",
479
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
480
mc->cred);
481
if (ret != GNUTLS_E_SUCCESS) {
482
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
357
483
safer_gnutls_strerror(ret));
484
gnutls_deinit (*session);
358
485
return -1;
359
486
}
360
487
367
494
return 0;
368
495
}
369
496
497
/* Avahi log function callback */
370
498
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
371
499
__attribute__((unused)) const char *txt){}
372
500
501
/* Called when a Mandos server is found */
373
502
static int start_mandos_communication(const char *ip, uint16_t port,
374
503
AvahiIfIndex if_index,
375
504
mandos_context *mc){
376
505
int ret, tcp_sd;
377
struct sockaddr_in6 to;
506
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
378
507
char *buffer = NULL;
379
508
char *decrypted_buffer;
380
509
size_t buffer_length = 0;
381
510
size_t buffer_capacity = 0;
382
511
ssize_t decrypted_buffer_size;
383
size_t written = 0;
512
size_t written;
384
513
int retval = 0;
385
514
char interface[IF_NAMESIZE];
386
515
gnutls_session_t session;
387
gnutls_dh_params_t dh_params;
516
517
ret = init_gnutls_session (mc, &session);
518
if (ret != 0){
519
return -1;
520
}
388
521
389
522
if(debug){
390
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
391
ip, port);
523
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
524
"\n", ip, port);
392
525
}
393
526
394
527
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
396
529
perror("socket");
397
530
return -1;
398
531
}
399
532
400
533
if(debug){
401
534
if(if_indextoname((unsigned int)if_index, interface) == NULL){
402
535
perror("if_indextoname");
405
538
fprintf(stderr, "Binding to interface %s\n", interface);
406
539
}
407
540
408
memset(&to,0,sizeof(to)); /* Spurious warning */
409
to.sin6_family = AF_INET6;
410
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
541
memset(&to, 0, sizeof(to));
542
to.in6.sin6_family = AF_INET6;
543
/* It would be nice to have a way to detect if we were passed an
544
IPv4 address here. Now we assume an IPv6 address. */
545
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
411
546
if (ret < 0 ){
412
547
perror("inet_pton");
413
548
return -1;
416
551
fprintf(stderr, "Bad address: %s\n", ip);
417
552
return -1;
418
553
}
419
to.sin6_port = htons(port); /* Spurious warning */
554
to.in6.sin6_port = htons(port); /* Spurious warning */
420
555
421
to.sin6_scope_id = (uint32_t)if_index;
556
to.in6.sin6_scope_id = (uint32_t)if_index;
422
557
423
558
if(debug){
424
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
559
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
560
port);
425
561
char addrstr[INET6_ADDRSTRLEN] = "";
426
if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr,
562
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
427
563
sizeof(addrstr)) == NULL){
428
564
perror("inet_ntop");
429
565
} else {
433
569
}
434
570
}
435
571
436
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
572
ret = connect(tcp_sd, &to.in, sizeof(to));
437
573
if (ret < 0){
438
574
perror("connect");
439
575
return -1;
440
576
}
441
577
442
ret = initgnutls (mc, &session, &dh_params);
443
if (ret != 0){
444
retval = -1;
445
return -1;
578
const char *out = mandos_protocol_version;
579
written = 0;
580
while (true){
581
size_t out_size = strlen(out);
582
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
583
out_size - written));
584
if (ret == -1){
585
perror("write");
586
retval = -1;
587
goto mandos_end;
588
}
589
written += (size_t)ret;
590
if(written < out_size){
591
continue;
592
} else {
593
if (out == mandos_protocol_version){
594
written = 0;
595
out = "\r\n";
596
} else {
597
break;
598
}
599
}
600
}
601
602
if(debug){
603
fprintf(stderr, "Establishing TLS session with %s\n", ip);
446
604
}
447
605
448
606
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
449
607
450
if(debug){
451
fprintf(stderr, "Establishing TLS session with %s\n", ip);
452
}
453
454
ret = gnutls_handshake (session);
608
do{
609
ret = gnutls_handshake (session);
610
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
455
611
456
612
if (ret != GNUTLS_E_SUCCESS){
457
613
if(debug){
458
fprintf(stderr, "\n*** Handshake failed ***\n");
614
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
459
615
gnutls_perror (ret);
460
616
}
461
617
retval = -1;
462
goto exit;
618
goto mandos_end;
463
619
}
464
620
465
//Retrieve OpenPGP packet that contains the wanted password
621
/* Read OpenPGP packet that contains the wanted password */
466
622
467
623
if(debug){
468
624
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
469
625
ip);
470
626
}
471
627
472
628
while(true){
473
if (buffer_length + BUFFER_SIZE > buffer_capacity){
474
buffer = realloc(buffer, buffer_capacity + BUFFER_SIZE);
475
if (buffer == NULL){
476
perror("realloc");
477
goto exit;
478
}
479
buffer_capacity += BUFFER_SIZE;
629
buffer_capacity = adjustbuffer(&buffer, buffer_length,
630
buffer_capacity);
631
if (buffer_capacity == 0){
632
perror("adjustbuffer");
633
retval = -1;
634
goto mandos_end;
480
635
}
481
636
482
637
ret = gnutls_record_recv(session, buffer+buffer_length,
490
645
case GNUTLS_E_AGAIN:
491
646
break;
492
647
case GNUTLS_E_REHANDSHAKE:
493
ret = gnutls_handshake (session);
648
do{
649
ret = gnutls_handshake (session);
650
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
494
651
if (ret < 0){
495
fprintf(stderr, "\n*** Handshake failed ***\n");
652
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
496
653
gnutls_perror (ret);
497
654
retval = -1;
498
goto exit;
655
goto mandos_end;
499
656
}
500
657
break;
501
658
default:
502
659
fprintf(stderr, "Unknown error while reading data from"
503
" encrypted session with mandos server\n");
660
" encrypted session with Mandos server\n");
504
661
retval = -1;
505
662
gnutls_bye (session, GNUTLS_SHUT_RDWR);
506
goto exit;
663
goto mandos_end;
507
664
}
508
665
} else {
509
666
buffer_length += (size_t) ret;
510
667
}
511
668
}
512
669
670
if(debug){
671
fprintf(stderr, "Closing TLS session\n");
672
}
673
674
gnutls_bye (session, GNUTLS_SHUT_RDWR);
675
513
676
if (buffer_length > 0){
514
decrypted_buffer_size = pgp_packet_decrypt(buffer,
677
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
515
678
buffer_length,
516
&decrypted_buffer,
517
keydir);
679
&decrypted_buffer);
518
680
if (decrypted_buffer_size >= 0){
681
written = 0;
519
682
while(written < (size_t) decrypted_buffer_size){
520
683
ret = (int)fwrite (decrypted_buffer + written, 1,
521
684
(size_t)decrypted_buffer_size - written,
534
697
} else {
535
698
retval = -1;
536
699
}
537
}
538
539
//shutdown procedure
540
541
if(debug){
542
fprintf(stderr, "Closing TLS session\n");
543
}
544
700
} else {
701
retval = -1;
702
}
703
704
/* Shutdown procedure */
705
706
mandos_end:
545
707
free(buffer);
546
gnutls_bye (session, GNUTLS_SHUT_RDWR);
547
exit:
548
close(tcp_sd);
708
ret = TEMP_FAILURE_RETRY(close(tcp_sd));
709
if(ret == -1){
710
perror("close");
711
}
549
712
gnutls_deinit (session);
550
gnutls_certificate_free_credentials (mc->cred);
551
gnutls_global_deinit ();
552
713
return retval;
553
714
}
554
715
567
728
flags,
568
729
void* userdata) {
569
730
mandos_context *mc = userdata;
570
assert(r); /* Spurious warning */
731
assert(r);
571
732
572
733
/* Called whenever a service has been resolved successfully or
573
734
timed out */
575
736
switch (event) {
576
737
default:
577
738
case AVAHI_RESOLVER_FAILURE:
578
fprintf(stderr, "(Resolver) Failed to resolve service '%s' of"
579
" type '%s' in domain '%s': %s\n", name, type, domain,
739
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
740
" of type '%s' in domain '%s': %s\n", name, type, domain,
580
741
avahi_strerror(avahi_server_errno(mc->server)));
581
742
break;
582
743
585
746
char ip[AVAHI_ADDRESS_STR_MAX];
586
747
avahi_address_snprint(ip, sizeof(ip), address);
587
748
if(debug){
588
fprintf(stderr, "Mandos server \"%s\" found on %s (%s) on"
589
" port %d\n", name, host_name, ip, port);
749
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
750
PRIu16 ") on port %d\n", name, host_name, ip,
751
interface, port);
590
752
}
591
753
int ret = start_mandos_communication(ip, port, interface, mc);
592
754
if (ret == 0){
593
exit(EXIT_SUCCESS);
755
avahi_simple_poll_quit(mc->simple_poll);
594
756
}
595
757
}
596
758
}
608
770
flags,
609
771
void* userdata) {
610
772
mandos_context *mc = userdata;
611
assert(b); /* Spurious warning */
773
assert(b);
612
774
613
775
/* Called whenever a new services becomes available on the LAN or
614
776
is removed from the LAN */
617
779
default:
618
780
case AVAHI_BROWSER_FAILURE:
619
781
620
fprintf(stderr, "(Browser) %s\n",
782
fprintf(stderr, "(Avahi browser) %s\n",
621
783
avahi_strerror(avahi_server_errno(mc->server)));
622
784
avahi_simple_poll_quit(mc->simple_poll);
623
785
return;
624
786
625
787
case AVAHI_BROWSER_NEW:
626
/* We ignore the returned resolver object. In the callback
627
function we free it. If the server is terminated before
628
the callback function is called the server will free
629
the resolver for us. */
788
/* We ignore the returned Avahi resolver object. In the callback
789
function we free it. If the Avahi server is terminated before
790
the callback function is called the Avahi server will free the
791
resolver for us. */
630
792
631
793
if (!(avahi_s_service_resolver_new(mc->server, interface,
632
794
protocol, name, type, domain,
633
795
AVAHI_PROTO_INET6, 0,
634
796
resolve_callback, mc)))
635
fprintf(stderr, "Failed to resolve service '%s': %s\n", name,
636
avahi_strerror(avahi_server_errno(mc->server)));
797
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
798
name, avahi_strerror(avahi_server_errno(mc->server)));
637
799
break;
638
800
639
801
case AVAHI_BROWSER_REMOVE:
641
803
642
804
case AVAHI_BROWSER_ALL_FOR_NOW:
643
805
case AVAHI_BROWSER_CACHE_EXHAUSTED:
806
if(debug){
807
fprintf(stderr, "No Mandos server found, still searching...\n");
808
}
644
809
break;
645
810
}
646
811
}
647
812
648
/* Combines file name and path and returns the malloced new
649
string. some sane checks could/should be added */
650
static const char *combinepath(const char *first, const char *second){
651
size_t f_len = strlen(first);
652
size_t s_len = strlen(second);
653
char *tmp = malloc(f_len + s_len + 2);
654
if (tmp == NULL){
655
return NULL;
656
}
657
if(f_len > 0){
658
memcpy(tmp, first, f_len); /* Spurious warning */
659
}
660
tmp[f_len] = '/';
661
if(s_len > 0){
662
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
663
}
664
tmp[f_len + 1 + s_len] = '\0';
665
return tmp;
666
}
667
668
669
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
670
AvahiServerConfig config;
813
int main(int argc, char *argv[]){
671
814
AvahiSServiceBrowser *sb = NULL;
672
815
int error;
673
816
int ret;
674
int debug_int;
675
int returncode = EXIT_SUCCESS;
817
int exitcode = EXIT_SUCCESS;
676
818
const char *interface = "eth0";
677
819
struct ifreq network;
678
820
int sd;
821
uid_t uid;
822
gid_t gid;
679
823
char *connect_to = NULL;
824
char tempdir[] = "/tmp/mandosXXXXXX";
680
825
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
826
const char *seckey = PATHDIR "/" SECKEY;
827
const char *pubkey = PATHDIR "/" PUBKEY;
828
681
829
mandos_context mc = { .simple_poll = NULL, .server = NULL,
682
.dh_bits = 1024, .priority = "SECURE256"};
683
684
debug_int = debug ? 1 : 0;
685
while (true){
686
struct option long_options[] = {
687
{"debug", no_argument, &debug_int, 1},
688
{"connect", required_argument, NULL, 'c'},
689
{"interface", required_argument, NULL, 'i'},
690
{"keydir", required_argument, NULL, 'd'},
691
{"seckey", required_argument, NULL, 's'},
692
{"pubkey", required_argument, NULL, 'p'},
693
{"dh-bits", required_argument, NULL, 'D'},
694
{"priority", required_argument, NULL, 'P'},
695
{0, 0, 0, 0} };
696
697
int option_index = 0;
698
ret = getopt_long (argc, argv, "i:", long_options,
699
&option_index);
700
701
if (ret == -1){
702
break;
703
}
704
705
switch(ret){
706
case 0:
707
break;
708
case 'i':
709
interface = optarg;
710
break;
711
case 'c':
712
connect_to = optarg;
713
break;
714
case 'd':
715
keydir = optarg;
716
break;
717
case 'p':
718
pubkeyfile = optarg;
719
break;
720
case 's':
721
seckeyfile = optarg;
722
break;
723
case 'D':
724
errno = 0;
725
mc.dh_bits = (unsigned int) strtol(optarg, NULL, 10);
726
if (errno){
727
perror("strtol");
728
exit(EXIT_FAILURE);
729
}
730
break;
731
case 'P':
732
mc.priority = optarg;
733
break;
734
case '?':
735
default:
736
exit(EXIT_FAILURE);
737
}
738
}
739
debug = debug_int ? true : false;
740
741
pubkeyfile = combinepath(keydir, pubkeyfile);
742
if (pubkeyfile == NULL){
743
perror("combinepath");
744
returncode = EXIT_FAILURE;
745
goto exit;
746
}
747
748
seckeyfile = combinepath(keydir, seckeyfile);
749
if (seckeyfile == NULL){
750
perror("combinepath");
751
goto exit;
830
.dh_bits = 1024, .priority = "SECURE256"
831
":!CTYPE-X.509:+CTYPE-OPENPGP" };
832
bool gnutls_initalized = false;
833
bool pgpme_initalized = false;
834
835
{
836
struct argp_option options[] = {
837
{ .name = "debug", .key = 128,
838
.doc = "Debug mode", .group = 3 },
839
{ .name = "connect", .key = 'c',
840
.arg = "ADDRESS:PORT",
841
.doc = "Connect directly to a specific Mandos server",
842
.group = 1 },
843
{ .name = "interface", .key = 'i',
844
.arg = "NAME",
845
.doc = "Interface that will be used to search for Mandos"
846
" servers",
847
.group = 1 },
848
{ .name = "seckey", .key = 's',
849
.arg = "FILE",
850
.doc = "OpenPGP secret key file base name",
851
.group = 1 },
852
{ .name = "pubkey", .key = 'p',
853
.arg = "FILE",
854
.doc = "OpenPGP public key file base name",
855
.group = 2 },
856
{ .name = "dh-bits", .key = 129,
857
.arg = "BITS",
858
.doc = "Bit length of the prime number used in the"
859
" Diffie-Hellman key exchange",
860
.group = 2 },
861
{ .name = "priority", .key = 130,
862
.arg = "STRING",
863
.doc = "GnuTLS priority string for the TLS handshake",
864
.group = 1 },
865
{ .name = NULL }
866
};
867
868
error_t parse_opt (int key, char *arg,
869
struct argp_state *state) {
870
/* Get the INPUT argument from `argp_parse', which we know is
871
a pointer to our plugin list pointer. */
872
switch (key) {
873
case 128: /* --debug */
874
debug = true;
875
break;
876
case 'c': /* --connect */
877
connect_to = arg;
878
break;
879
case 'i': /* --interface */
880
interface = arg;
881
break;
882
case 's': /* --seckey */
883
seckey = arg;
884
break;
885
case 'p': /* --pubkey */
886
pubkey = arg;
887
break;
888
case 129: /* --dh-bits */
889
errno = 0;
890
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
891
if (errno){
892
perror("strtol");
893
exit(EXIT_FAILURE);
894
}
895
break;
896
case 130: /* --priority */
897
mc.priority = arg;
898
break;
899
case ARGP_KEY_ARG:
900
argp_usage (state);
901
case ARGP_KEY_END:
902
break;
903
default:
904
return ARGP_ERR_UNKNOWN;
905
}
906
return 0;
907
}
908
909
struct argp argp = { .options = options, .parser = parse_opt,
910
.args_doc = "",
911
.doc = "Mandos client -- Get and decrypt"
912
" passwords from a Mandos server" };
913
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
914
if (ret == ARGP_ERR_UNKNOWN){
915
fprintf(stderr, "Unknown error while parsing arguments\n");
916
exitcode = EXIT_FAILURE;
917
goto end;
918
}
919
}
920
921
/* If the interface is down, bring it up */
922
{
923
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
924
if(sd < 0) {
925
perror("socket");
926
exitcode = EXIT_FAILURE;
927
goto end;
928
}
929
strcpy(network.ifr_name, interface);
930
ret = ioctl(sd, SIOCGIFFLAGS, &network);
931
if(ret == -1){
932
perror("ioctl SIOCGIFFLAGS");
933
exitcode = EXIT_FAILURE;
934
goto end;
935
}
936
if((network.ifr_flags & IFF_UP) == 0){
937
network.ifr_flags |= IFF_UP;
938
ret = ioctl(sd, SIOCSIFFLAGS, &network);
939
if(ret == -1){
940
perror("ioctl SIOCSIFFLAGS");
941
exitcode = EXIT_FAILURE;
942
goto end;
943
}
944
}
945
ret = TEMP_FAILURE_RETRY(close(sd));
946
if(ret == -1){
947
perror("close");
948
}
949
}
950
951
uid = getuid();
952
gid = getgid();
953
954
ret = setuid(uid);
955
if (ret == -1){
956
perror("setuid");
957
}
958
959
setgid(gid);
960
if (ret == -1){
961
perror("setgid");
962
}
963
964
ret = init_gnutls_global(&mc, pubkey, seckey);
965
if (ret == -1){
966
fprintf(stderr, "init_gnutls_global failed\n");
967
exitcode = EXIT_FAILURE;
968
goto end;
969
} else {
970
gnutls_initalized = true;
971
}
972
973
if(mkdtemp(tempdir) == NULL){
974
perror("mkdtemp");
975
tempdir[0] = '\0';
976
goto end;
977
}
978
979
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
980
fprintf(stderr, "pgpme_initalized failed\n");
981
exitcode = EXIT_FAILURE;
982
goto end;
983
} else {
984
pgpme_initalized = true;
752
985
}
753
986
754
987
if_index = (AvahiIfIndex) if_nametoindex(interface);
763
996
char *address = strrchr(connect_to, ':');
764
997
if(address == NULL){
765
998
fprintf(stderr, "No colon in address\n");
766
exit(EXIT_FAILURE);
999
exitcode = EXIT_FAILURE;
1000
goto end;
767
1001
}
768
1002
errno = 0;
769
1003
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
770
1004
if(errno){
771
1005
perror("Bad port number");
772
exit(EXIT_FAILURE);
1006
exitcode = EXIT_FAILURE;
1007
goto end;
773
1008
}
774
1009
*address = '\0';
775
1010
address = connect_to;
776
1011
ret = start_mandos_communication(address, port, if_index, &mc);
777
1012
if(ret < 0){
778
exit(EXIT_FAILURE);
1013
exitcode = EXIT_FAILURE;
779
1014
} else {
780
exit(EXIT_SUCCESS);
781
}
782
}
783
784
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
785
if(sd < 0) {
786
perror("socket");
787
returncode = EXIT_FAILURE;
788
goto exit;
789
}
790
strcpy(network.ifr_name, interface); /* Spurious warning */
791
ret = ioctl(sd, SIOCGIFFLAGS, &network);
792
if(ret == -1){
793
794
perror("ioctl SIOCGIFFLAGS");
795
returncode = EXIT_FAILURE;
796
goto exit;
797
}
798
if((network.ifr_flags & IFF_UP) == 0){
799
network.ifr_flags |= IFF_UP;
800
ret = ioctl(sd, SIOCSIFFLAGS, &network);
801
if(ret == -1){
802
perror("ioctl SIOCSIFFLAGS");
803
returncode = EXIT_FAILURE;
804
goto exit;
805
}
806
}
807
close(sd);
1015
exitcode = EXIT_SUCCESS;
1016
}
1017
goto end;
1018
}
808
1019
809
1020
if (not debug){
810
1021
avahi_set_log_function(empty_log);
811
1022
}
812
1023
813
/* Initialize the psuedo-RNG */
1024
/* Initialize the pseudo-RNG for Avahi */
814
1025
srand((unsigned int) time(NULL));
815
816
/* Allocate main loop object */
817
if (!(mc.simple_poll = avahi_simple_poll_new())) {
818
fprintf(stderr, "Failed to create simple poll object.\n");
819
returncode = EXIT_FAILURE;
820
goto exit;
821
}
822
823
/* Do not publish any local records */
824
avahi_server_config_init(&config);
825
config.publish_hinfo = 0;
826
config.publish_addresses = 0;
827
config.publish_workstation = 0;
828
config.publish_domain = 0;
829
830
/* Allocate a new server */
831
mc.server=avahi_server_new(avahi_simple_poll_get(mc.simple_poll),
832
&config, NULL, NULL, &error);
833
834
/* Free the configuration data */
835
avahi_server_config_free(&config);
836
837
/* Check if creating the server object succeeded */
838
if (!mc.server) {
839
fprintf(stderr, "Failed to create server: %s\n",
1026
1027
/* Allocate main Avahi loop object */
1028
mc.simple_poll = avahi_simple_poll_new();
1029
if (mc.simple_poll == NULL) {
1030
fprintf(stderr, "Avahi: Failed to create simple poll"
1031
" object.\n");
1032
exitcode = EXIT_FAILURE;
1033
goto end;
1034
}
1035
1036
{
1037
AvahiServerConfig config;
1038
/* Do not publish any local Zeroconf records */
1039
avahi_server_config_init(&config);
1040
config.publish_hinfo = 0;
1041
config.publish_addresses = 0;
1042
config.publish_workstation = 0;
1043
config.publish_domain = 0;
1044
1045
/* Allocate a new server */
1046
mc.server = avahi_server_new(avahi_simple_poll_get
1047
(mc.simple_poll), &config, NULL,
1048
NULL, &error);
1049
1050
/* Free the Avahi configuration data */
1051
avahi_server_config_free(&config);
1052
}
1053
1054
/* Check if creating the Avahi server object succeeded */
1055
if (mc.server == NULL) {
1056
fprintf(stderr, "Failed to create Avahi server: %s\n",
840
1057
avahi_strerror(error));
841
returncode = EXIT_FAILURE;
842
goto exit;
1058
exitcode = EXIT_FAILURE;
1059
goto end;
843
1060
}
844
1061
845
/* Create the service browser */
1062
/* Create the Avahi service browser */
846
1063
sb = avahi_s_service_browser_new(mc.server, if_index,
847
1064
AVAHI_PROTO_INET6,
848
1065
"_mandos._tcp", NULL, 0,
849
1066
browse_callback, &mc);
850
if (!sb) {
1067
if (sb == NULL) {
851
1068
fprintf(stderr, "Failed to create service browser: %s\n",
852
1069
avahi_strerror(avahi_server_errno(mc.server)));
853
returncode = EXIT_FAILURE;
854
goto exit;
1070
exitcode = EXIT_FAILURE;
1071
goto end;
855
1072
}
856
1073
857
1074
/* Run the main loop */
858
1075
859
1076
if (debug){
860
fprintf(stderr, "Starting avahi loop search\n");
1077
fprintf(stderr, "Starting Avahi loop search\n");
861
1078
}
862
1079
863
1080
avahi_simple_poll_loop(mc.simple_poll);
864
1081
865
exit:
866
1082
end:
1083
867
1084
if (debug){
868
1085
fprintf(stderr, "%s exiting\n", argv[0]);
869
1086
}
870
1087
871
1088
/* Cleanup things */
872
if (sb)
1089
if (sb != NULL)
873
1090
avahi_s_service_browser_free(sb);
874
1091
875
if (mc.server)
1092
if (mc.server != NULL)
876
1093
avahi_server_free(mc.server);
877
878
if (mc.simple_poll)
1094
1095
if (mc.simple_poll != NULL)
879
1096
avahi_simple_poll_free(mc.simple_poll);
880
free(pubkeyfile);
881
free(seckeyfile);
882
883
return returncode;
1097
1098
if (gnutls_initalized){
1099
gnutls_certificate_free_credentials(mc.cred);
1100
gnutls_global_deinit ();
1101
}
1102
1103
if(pgpme_initalized){
1104
gpgme_release(mc.ctx);
1105
}
1106
1107
/* Removes the temp directory used by GPGME */
1108
if(tempdir[0] != '\0'){
1109
DIR *d;
1110
struct dirent *direntry;
1111
d = opendir(tempdir);
1112
if(d == NULL){
1113
perror("opendir");
1114
} else {
1115
while(true){
1116
direntry = readdir(d);
1117
if(direntry == NULL){
1118
break;
1119
}
1120
if (direntry->d_type == DT_REG){
1121
char *fullname = NULL;
1122
ret = asprintf(&fullname, "%s/%s", tempdir,
1123
direntry->d_name);
1124
if(ret < 0){
1125
perror("asprintf");
1126
continue;
1127
}
1128
ret = unlink(fullname);
1129
if(ret == -1){
1130
fprintf(stderr, "unlink(\"%s\"): %s",
1131
fullname, strerror(errno));
1132
}
1133
free(fullname);
1134
}
1135
}
1136
}
1137
ret = rmdir(tempdir);
1138
if(ret == -1){
1139
perror("rmdir");
1140
}
1141
}
1142
1143
return exitcode;
884
1144
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0