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- Committer: Teddy Hogeborn
- Date: 2008-08-03 03:33:56 UTC
- Revision ID: teddy@fukt.bsnet.se-20080803033356-6aemgj0g0hoz91ow
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
On debug, show
decrypted plaintext
in hexadecimal. Free
the GPGME data
buffers even on
errors.
On debug, show
decrypted plaintext
in hexadecimal. Free
the GPGME data
buffers even on
errors.
- files added:
- ca.pem
- files removed:
- .bzrignore
- files renamed:
- plugin-runner.c => plugbasedclient.c
- plugins.d/mandos-client.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, 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() */
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 */
61
42
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
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 */
43
SIOCSIFFLAGS */
74
44
75
/* Avahi */
76
/* All Avahi types, constants and functions
77
Avahi*, avahi_*,
78
AVAHI_* */
79
45
#include <avahi-core/core.h>
80
46
#include <avahi-core/lookup.h>
81
47
#include <avahi-core/log.h>
83
49
#include <avahi-common/malloc.h>
84
50
#include <avahi-common/error.h>
85
51
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_* */
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>
101
72
102
73
#define BUFFER_SIZE 256
103
74
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"
75
static const char *keydir = "/conf/conf.d/mandos";
76
static const char *pubkeyfile = "pubkey.txt";
77
static const char *seckeyfile = "seckey.txt";
111
78
112
79
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>";
116
80
117
/* Used for passing in values through the Avahi callback functions */
81
/* Used for passing in values through all the callback functions */
118
82
typedef struct {
119
83
AvahiSimplePoll *simple_poll;
120
84
AvahiServer *server;
121
85
gnutls_certificate_credentials_t cred;
122
86
unsigned int dh_bits;
123
gnutls_dh_params_t dh_params;
124
87
const char *priority;
88
} mandos_context;
89
90
/*
91
* Decrypt OpenPGP data using keyrings in HOMEDIR.
92
* Returns -1 on error
93
*/
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;
125
99
gpgme_ctx_t ctx;
126
} mandos_context;
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
145
/*
146
* Initialize GPGME.
147
*/
148
static bool init_gpgme(mandos_context *mc, const char *seckey,
149
const char *pubkey, const char *tempdir){
150
int ret;
151
100
gpgme_error_t rc;
101
ssize_t ret;
102
ssize_t plaintext_capacity = 0;
103
ssize_t plaintext_length = 0;
152
104
gpgme_engine_info_t engine_info;
153
105
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
190
106
if (debug){
191
fprintf(stderr, "Initialize gpgme\n");
107
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
192
108
}
193
109
194
110
/* Init GPGME */
197
113
if (rc != GPG_ERR_NO_ERROR){
198
114
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
199
115
gpgme_strsource(rc), gpgme_strerror(rc));
200
return false;
116
return -1;
201
117
}
202
118
203
/* Set GPGME home directory for the OpenPGP engine only */
119
/* Set GPGME home directory for the OpenPGP engine only */
204
120
rc = gpgme_get_engine_info (&engine_info);
205
121
if (rc != GPG_ERR_NO_ERROR){
206
122
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
207
123
gpgme_strsource(rc), gpgme_strerror(rc));
208
return false;
124
return -1;
209
125
}
210
126
while(engine_info != NULL){
211
127
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
212
128
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
213
engine_info->file_name, tempdir);
129
engine_info->file_name, homedir);
214
130
break;
215
131
}
216
132
engine_info = engine_info->next;
217
133
}
218
134
if(engine_info == NULL){
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");
135
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
136
return -1;
254
137
}
255
138
256
139
/* Create new GPGME data buffer from memory cryptotext */
271
154
return -1;
272
155
}
273
156
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
274
166
/* Decrypt data from the cryptotext data buffer to the plaintext
275
167
data buffer */
276
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
168
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
277
169
if (rc != GPG_ERR_NO_ERROR){
278
170
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
279
171
gpgme_strsource(rc), gpgme_strerror(rc));
280
172
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
}
309
173
goto decrypt_end;
310
174
}
311
175
313
177
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
314
178
}
315
179
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
316
209
/* Seek back to the beginning of the GPGME plaintext data buffer */
317
210
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
318
perror("gpgme_data_seek");
211
perror("pgpme_data_seek");
319
212
plaintext_length = -1;
320
213
goto decrypt_end;
321
214
}
322
215
323
216
*plaintext = NULL;
324
217
while(true){
325
plaintext_capacity = adjustbuffer(plaintext,
326
(size_t)plaintext_length,
327
plaintext_capacity);
328
if (plaintext_capacity == 0){
329
perror("adjustbuffer");
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");
330
224
plaintext_length = -1;
331
225
goto decrypt_end;
226
}
227
plaintext_capacity += BUFFER_SIZE;
332
228
}
333
229
334
230
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
345
241
}
346
242
plaintext_length += ret;
347
243
}
348
244
349
245
if(debug){
350
246
fprintf(stderr, "Decrypted password is: ");
351
for(ssize_t i = 0; i < plaintext_length; i++){
247
for(size_t i = 0; i < plaintext_length; i++){
352
248
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
353
249
}
354
250
fprintf(stderr, "\n");
365
261
}
366
262
367
263
static const char * safer_gnutls_strerror (int value) {
368
const char *ret = gnutls_strerror (value); /* Spurious warning */
264
const char *ret = gnutls_strerror (value);
369
265
if (ret == NULL)
370
266
ret = "(unknown)";
371
267
return ret;
372
268
}
373
269
374
/* GnuTLS log function callback */
375
270
static void debuggnutls(__attribute__((unused)) int level,
376
271
const char* string){
377
fprintf(stderr, "GnuTLS: %s", string);
272
fprintf(stderr, "%s", string);
378
273
}
379
274
380
static int init_gnutls_global(mandos_context *mc,
381
const char *pubkeyfilename,
382
const char *seckeyfilename){
275
static int initgnutls(mandos_context *mc, gnutls_session_t *session,
276
gnutls_dh_params_t *dh_params){
277
const char *err;
383
278
int ret;
384
279
385
280
if(debug){
386
281
fprintf(stderr, "Initializing GnuTLS\n");
387
282
}
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));
283
284
if ((ret = gnutls_global_init ())
285
!= GNUTLS_E_SUCCESS) {
286
fprintf (stderr, "global_init: %s\n", safer_gnutls_strerror(ret));
393
287
return -1;
394
288
}
395
289
396
290
if (debug){
397
/* "Use a log level over 10 to enable all debugging options."
398
* - GnuTLS manual
399
*/
400
291
gnutls_global_set_log_level(11);
401
292
gnutls_global_set_log_function(debuggnutls);
402
293
}
403
294
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 */
295
/* openpgp credentials */
296
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
297
!= GNUTLS_E_SUCCESS) {
298
fprintf (stderr, "memory error: %s\n",
409
299
safer_gnutls_strerror(ret));
410
gnutls_global_deinit ();
411
300
return -1;
412
301
}
413
302
414
303
if(debug){
415
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
416
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
417
seckeyfilename);
304
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
305
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
306
seckeyfile);
418
307
}
419
308
420
309
ret = gnutls_certificate_set_openpgp_key_file
421
(mc->cred, pubkeyfilename, seckeyfilename,
422
GNUTLS_OPENPGP_FMT_BASE64);
310
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
423
311
if (ret != GNUTLS_E_SUCCESS) {
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",
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",
428
317
safer_gnutls_strerror(ret));
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
gnutls_dh_params_deinit(mc->dh_params);
455
return -1;
456
}
457
458
static int init_gnutls_session(mandos_context *mc,
459
gnutls_session_t *session){
460
int ret;
461
/* GnuTLS session creation */
462
ret = gnutls_init(session, GNUTLS_SERVER);
463
if (ret != GNUTLS_E_SUCCESS){
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){
464
341
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
465
342
safer_gnutls_strerror(ret));
466
343
}
467
344
468
{
469
const char *err;
470
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
471
if (ret != GNUTLS_E_SUCCESS) {
472
fprintf(stderr, "Syntax error at: %s\n", err);
473
fprintf(stderr, "GnuTLS error: %s\n",
474
safer_gnutls_strerror(ret));
475
gnutls_deinit (*session);
476
return -1;
477
}
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;
478
351
}
479
352
480
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
481
mc->cred);
482
if (ret != GNUTLS_E_SUCCESS) {
483
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
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",
484
357
safer_gnutls_strerror(ret));
485
gnutls_deinit (*session);
486
358
return -1;
487
359
}
488
360
495
367
return 0;
496
368
}
497
369
498
/* Avahi log function callback */
499
370
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
500
371
__attribute__((unused)) const char *txt){}
501
372
502
/* Called when a Mandos server is found */
503
373
static int start_mandos_communication(const char *ip, uint16_t port,
504
374
AvahiIfIndex if_index,
505
375
mandos_context *mc){
506
376
int ret, tcp_sd;
507
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
377
struct sockaddr_in6 to;
508
378
char *buffer = NULL;
509
379
char *decrypted_buffer;
510
380
size_t buffer_length = 0;
511
381
size_t buffer_capacity = 0;
512
382
ssize_t decrypted_buffer_size;
513
size_t written;
383
size_t written = 0;
514
384
int retval = 0;
515
385
char interface[IF_NAMESIZE];
516
386
gnutls_session_t session;
517
518
ret = init_gnutls_session (mc, &session);
519
if (ret != 0){
520
return -1;
521
}
387
gnutls_dh_params_t dh_params;
522
388
523
389
if(debug){
524
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
525
"\n", ip, port);
390
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
391
ip, port);
526
392
}
527
393
528
394
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
530
396
perror("socket");
531
397
return -1;
532
398
}
533
399
534
400
if(debug){
535
401
if(if_indextoname((unsigned int)if_index, interface) == NULL){
536
402
perror("if_indextoname");
539
405
fprintf(stderr, "Binding to interface %s\n", interface);
540
406
}
541
407
542
memset(&to, 0, sizeof(to));
543
to.in6.sin6_family = AF_INET6;
544
/* It would be nice to have a way to detect if we were passed an
545
IPv4 address here. Now we assume an IPv6 address. */
546
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
408
memset(&to,0,sizeof(to)); /* Spurious warning */
409
to.sin6_family = AF_INET6;
410
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
547
411
if (ret < 0 ){
548
412
perror("inet_pton");
549
413
return -1;
552
416
fprintf(stderr, "Bad address: %s\n", ip);
553
417
return -1;
554
418
}
555
to.in6.sin6_port = htons(port); /* Spurious warning */
419
to.sin6_port = htons(port); /* Spurious warning */
556
420
557
to.in6.sin6_scope_id = (uint32_t)if_index;
421
to.sin6_scope_id = (uint32_t)if_index;
558
422
559
423
if(debug){
560
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
561
port);
424
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
562
425
char addrstr[INET6_ADDRSTRLEN] = "";
563
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
426
if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr,
564
427
sizeof(addrstr)) == NULL){
565
428
perror("inet_ntop");
566
429
} else {
570
433
}
571
434
}
572
435
573
ret = connect(tcp_sd, &to.in, sizeof(to));
436
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
574
437
if (ret < 0){
575
438
perror("connect");
576
439
return -1;
577
440
}
578
441
579
const char *out = mandos_protocol_version;
580
written = 0;
581
while (true){
582
size_t out_size = strlen(out);
583
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
584
out_size - written));
585
if (ret == -1){
586
perror("write");
587
retval = -1;
588
goto mandos_end;
589
}
590
written += (size_t)ret;
591
if(written < out_size){
592
continue;
593
} else {
594
if (out == mandos_protocol_version){
595
written = 0;
596
out = "\r\n";
597
} else {
598
break;
599
}
600
}
442
ret = initgnutls (mc, &session, &dh_params);
443
if (ret != 0){
444
retval = -1;
445
return -1;
601
446
}
602
447
448
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
449
603
450
if(debug){
604
451
fprintf(stderr, "Establishing TLS session with %s\n", ip);
605
452
}
606
453
607
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
608
609
do{
610
ret = gnutls_handshake (session);
611
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
454
ret = gnutls_handshake (session);
612
455
613
456
if (ret != GNUTLS_E_SUCCESS){
614
457
if(debug){
615
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
458
fprintf(stderr, "\n*** Handshake failed ***\n");
616
459
gnutls_perror (ret);
617
460
}
618
461
retval = -1;
619
goto mandos_end;
462
goto exit;
620
463
}
621
464
622
/* Read OpenPGP packet that contains the wanted password */
465
//Retrieve OpenPGP packet that contains the wanted password
623
466
624
467
if(debug){
625
468
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
626
469
ip);
627
470
}
628
471
629
472
while(true){
630
buffer_capacity = adjustbuffer(&buffer, buffer_length,
631
buffer_capacity);
632
if (buffer_capacity == 0){
633
perror("adjustbuffer");
634
retval = -1;
635
goto mandos_end;
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;
636
480
}
637
481
638
482
ret = gnutls_record_recv(session, buffer+buffer_length,
646
490
case GNUTLS_E_AGAIN:
647
491
break;
648
492
case GNUTLS_E_REHANDSHAKE:
649
do{
650
ret = gnutls_handshake (session);
651
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
493
ret = gnutls_handshake (session);
652
494
if (ret < 0){
653
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
495
fprintf(stderr, "\n*** Handshake failed ***\n");
654
496
gnutls_perror (ret);
655
497
retval = -1;
656
goto mandos_end;
498
goto exit;
657
499
}
658
500
break;
659
501
default:
660
502
fprintf(stderr, "Unknown error while reading data from"
661
" encrypted session with Mandos server\n");
503
" encrypted session with mandos server\n");
662
504
retval = -1;
663
505
gnutls_bye (session, GNUTLS_SHUT_RDWR);
664
goto mandos_end;
506
goto exit;
665
507
}
666
508
} else {
667
509
buffer_length += (size_t) ret;
668
510
}
669
511
}
670
512
671
if(debug){
672
fprintf(stderr, "Closing TLS session\n");
673
}
674
675
gnutls_bye (session, GNUTLS_SHUT_RDWR);
676
677
513
if (buffer_length > 0){
678
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
514
decrypted_buffer_size = pgp_packet_decrypt(buffer,
679
515
buffer_length,
680
&decrypted_buffer);
516
&decrypted_buffer,
517
keydir);
681
518
if (decrypted_buffer_size >= 0){
682
written = 0;
683
519
while(written < (size_t) decrypted_buffer_size){
684
520
ret = (int)fwrite (decrypted_buffer + written, 1,
685
521
(size_t)decrypted_buffer_size - written,
698
534
} else {
699
535
retval = -1;
700
536
}
701
} else {
702
retval = -1;
703
}
704
705
/* Shutdown procedure */
706
707
mandos_end:
537
}
538
539
//shutdown procedure
540
541
if(debug){
542
fprintf(stderr, "Closing TLS session\n");
543
}
544
708
545
free(buffer);
709
ret = TEMP_FAILURE_RETRY(close(tcp_sd));
710
if(ret == -1){
711
perror("close");
712
}
546
gnutls_bye (session, GNUTLS_SHUT_RDWR);
547
exit:
548
close(tcp_sd);
713
549
gnutls_deinit (session);
550
gnutls_certificate_free_credentials (mc->cred);
551
gnutls_global_deinit ();
714
552
return retval;
715
553
}
716
554
729
567
flags,
730
568
void* userdata) {
731
569
mandos_context *mc = userdata;
732
assert(r);
570
assert(r); /* Spurious warning */
733
571
734
572
/* Called whenever a service has been resolved successfully or
735
573
timed out */
737
575
switch (event) {
738
576
default:
739
577
case AVAHI_RESOLVER_FAILURE:
740
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
741
" of type '%s' in domain '%s': %s\n", name, type, domain,
578
fprintf(stderr, "(Resolver) Failed to resolve service '%s' of"
579
" type '%s' in domain '%s': %s\n", name, type, domain,
742
580
avahi_strerror(avahi_server_errno(mc->server)));
743
581
break;
744
582
747
585
char ip[AVAHI_ADDRESS_STR_MAX];
748
586
avahi_address_snprint(ip, sizeof(ip), address);
749
587
if(debug){
750
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
751
PRIu16 ") on port %d\n", name, host_name, ip,
752
interface, port);
588
fprintf(stderr, "Mandos server \"%s\" found on %s (%s) on"
589
" port %d\n", name, host_name, ip, port);
753
590
}
754
591
int ret = start_mandos_communication(ip, port, interface, mc);
755
592
if (ret == 0){
756
avahi_simple_poll_quit(mc->simple_poll);
593
exit(EXIT_SUCCESS);
757
594
}
758
595
}
759
596
}
771
608
flags,
772
609
void* userdata) {
773
610
mandos_context *mc = userdata;
774
assert(b);
611
assert(b); /* Spurious warning */
775
612
776
613
/* Called whenever a new services becomes available on the LAN or
777
614
is removed from the LAN */
780
617
default:
781
618
case AVAHI_BROWSER_FAILURE:
782
619
783
fprintf(stderr, "(Avahi browser) %s\n",
620
fprintf(stderr, "(Browser) %s\n",
784
621
avahi_strerror(avahi_server_errno(mc->server)));
785
622
avahi_simple_poll_quit(mc->simple_poll);
786
623
return;
787
624
788
625
case AVAHI_BROWSER_NEW:
789
/* We ignore the returned Avahi resolver object. In the callback
790
function we free it. If the Avahi server is terminated before
791
the callback function is called the Avahi server will free the
792
resolver for us. */
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. */
793
630
794
631
if (!(avahi_s_service_resolver_new(mc->server, interface,
795
632
protocol, name, type, domain,
796
633
AVAHI_PROTO_INET6, 0,
797
634
resolve_callback, mc)))
798
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
799
name, avahi_strerror(avahi_server_errno(mc->server)));
635
fprintf(stderr, "Failed to resolve service '%s': %s\n", name,
636
avahi_strerror(avahi_server_errno(mc->server)));
800
637
break;
801
638
802
639
case AVAHI_BROWSER_REMOVE:
804
641
805
642
case AVAHI_BROWSER_ALL_FOR_NOW:
806
643
case AVAHI_BROWSER_CACHE_EXHAUSTED:
807
if(debug){
808
fprintf(stderr, "No Mandos server found, still searching...\n");
809
}
810
644
break;
811
645
}
812
646
}
813
647
814
int main(int argc, char *argv[]){
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;
815
671
AvahiSServiceBrowser *sb = NULL;
816
672
int error;
817
673
int ret;
818
int exitcode = EXIT_SUCCESS;
674
int debug_int;
675
int returncode = EXIT_SUCCESS;
819
676
const char *interface = "eth0";
820
677
struct ifreq network;
821
678
int sd;
822
uid_t uid;
823
gid_t gid;
824
679
char *connect_to = NULL;
825
char tempdir[] = "/tmp/mandosXXXXXX";
826
680
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
827
const char *seckey = PATHDIR "/" SECKEY;
828
const char *pubkey = PATHDIR "/" PUBKEY;
829
830
681
mandos_context mc = { .simple_poll = NULL, .server = NULL,
831
.dh_bits = 1024, .priority = "SECURE256"
832
":!CTYPE-X.509:+CTYPE-OPENPGP" };
833
bool gnutls_initalized = false;
834
bool gpgme_initalized = false;
835
836
{
837
struct argp_option options[] = {
838
{ .name = "debug", .key = 128,
839
.doc = "Debug mode", .group = 3 },
840
{ .name = "connect", .key = 'c',
841
.arg = "ADDRESS:PORT",
842
.doc = "Connect directly to a specific Mandos server",
843
.group = 1 },
844
{ .name = "interface", .key = 'i',
845
.arg = "NAME",
846
.doc = "Interface that will be used to search for Mandos"
847
" servers",
848
.group = 1 },
849
{ .name = "seckey", .key = 's',
850
.arg = "FILE",
851
.doc = "OpenPGP secret key file base name",
852
.group = 1 },
853
{ .name = "pubkey", .key = 'p',
854
.arg = "FILE",
855
.doc = "OpenPGP public key file base name",
856
.group = 2 },
857
{ .name = "dh-bits", .key = 129,
858
.arg = "BITS",
859
.doc = "Bit length of the prime number used in the"
860
" Diffie-Hellman key exchange",
861
.group = 2 },
862
{ .name = "priority", .key = 130,
863
.arg = "STRING",
864
.doc = "GnuTLS priority string for the TLS handshake",
865
.group = 1 },
866
{ .name = NULL }
867
};
868
869
error_t parse_opt (int key, char *arg,
870
struct argp_state *state) {
871
/* Get the INPUT argument from `argp_parse', which we know is
872
a pointer to our plugin list pointer. */
873
switch (key) {
874
case 128: /* --debug */
875
debug = true;
876
break;
877
case 'c': /* --connect */
878
connect_to = arg;
879
break;
880
case 'i': /* --interface */
881
interface = arg;
882
break;
883
case 's': /* --seckey */
884
seckey = arg;
885
break;
886
case 'p': /* --pubkey */
887
pubkey = arg;
888
break;
889
case 129: /* --dh-bits */
890
errno = 0;
891
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
892
if (errno){
893
perror("strtol");
894
exit(EXIT_FAILURE);
895
}
896
break;
897
case 130: /* --priority */
898
mc.priority = arg;
899
break;
900
case ARGP_KEY_ARG:
901
argp_usage (state);
902
case ARGP_KEY_END:
903
break;
904
default:
905
return ARGP_ERR_UNKNOWN;
906
}
907
return 0;
908
}
909
910
struct argp argp = { .options = options, .parser = parse_opt,
911
.args_doc = "",
912
.doc = "Mandos client -- Get and decrypt"
913
" passwords from a Mandos server" };
914
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
915
if (ret == ARGP_ERR_UNKNOWN){
916
fprintf(stderr, "Unknown error while parsing arguments\n");
917
exitcode = EXIT_FAILURE;
918
goto end;
919
}
920
}
921
922
/* If the interface is down, bring it up */
923
{
924
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
925
if(sd < 0) {
926
perror("socket");
927
exitcode = EXIT_FAILURE;
928
goto end;
929
}
930
strcpy(network.ifr_name, interface);
931
ret = ioctl(sd, SIOCGIFFLAGS, &network);
932
if(ret == -1){
933
perror("ioctl SIOCGIFFLAGS");
934
exitcode = EXIT_FAILURE;
935
goto end;
936
}
937
if((network.ifr_flags & IFF_UP) == 0){
938
network.ifr_flags |= IFF_UP;
939
ret = ioctl(sd, SIOCSIFFLAGS, &network);
940
if(ret == -1){
941
perror("ioctl SIOCSIFFLAGS");
942
exitcode = EXIT_FAILURE;
943
goto end;
944
}
945
}
946
ret = TEMP_FAILURE_RETRY(close(sd));
947
if(ret == -1){
948
perror("close");
949
}
950
}
951
952
uid = getuid();
953
gid = getgid();
954
955
ret = setuid(uid);
956
if (ret == -1){
957
perror("setuid");
958
}
959
960
setgid(gid);
961
if (ret == -1){
962
perror("setgid");
963
}
964
965
ret = init_gnutls_global(&mc, pubkey, seckey);
966
if (ret == -1){
967
fprintf(stderr, "init_gnutls_global failed\n");
968
exitcode = EXIT_FAILURE;
969
goto end;
970
} else {
971
gnutls_initalized = true;
972
}
973
974
if(mkdtemp(tempdir) == NULL){
975
perror("mkdtemp");
976
tempdir[0] = '\0';
977
goto end;
978
}
979
980
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
981
fprintf(stderr, "gpgme_initalized failed\n");
982
exitcode = EXIT_FAILURE;
983
goto end;
984
} else {
985
gpgme_initalized = true;
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;
986
752
}
987
753
988
754
if_index = (AvahiIfIndex) if_nametoindex(interface);
997
763
char *address = strrchr(connect_to, ':');
998
764
if(address == NULL){
999
765
fprintf(stderr, "No colon in address\n");
1000
exitcode = EXIT_FAILURE;
1001
goto end;
766
exit(EXIT_FAILURE);
1002
767
}
1003
768
errno = 0;
1004
769
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
1005
770
if(errno){
1006
771
perror("Bad port number");
1007
exitcode = EXIT_FAILURE;
1008
goto end;
772
exit(EXIT_FAILURE);
1009
773
}
1010
774
*address = '\0';
1011
775
address = connect_to;
1012
776
ret = start_mandos_communication(address, port, if_index, &mc);
1013
777
if(ret < 0){
1014
exitcode = EXIT_FAILURE;
778
exit(EXIT_FAILURE);
1015
779
} else {
1016
exitcode = EXIT_SUCCESS;
1017
}
1018
goto end;
1019
}
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);
1020
808
1021
809
if (not debug){
1022
810
avahi_set_log_function(empty_log);
1023
811
}
1024
812
1025
/* Initialize the pseudo-RNG for Avahi */
813
/* Initialize the psuedo-RNG */
1026
814
srand((unsigned int) time(NULL));
1027
1028
/* Allocate main Avahi loop object */
1029
mc.simple_poll = avahi_simple_poll_new();
1030
if (mc.simple_poll == NULL) {
1031
fprintf(stderr, "Avahi: Failed to create simple poll"
1032
" object.\n");
1033
exitcode = EXIT_FAILURE;
1034
goto end;
1035
}
1036
1037
{
1038
AvahiServerConfig config;
1039
/* Do not publish any local Zeroconf records */
1040
avahi_server_config_init(&config);
1041
config.publish_hinfo = 0;
1042
config.publish_addresses = 0;
1043
config.publish_workstation = 0;
1044
config.publish_domain = 0;
1045
1046
/* Allocate a new server */
1047
mc.server = avahi_server_new(avahi_simple_poll_get
1048
(mc.simple_poll), &config, NULL,
1049
NULL, &error);
1050
1051
/* Free the Avahi configuration data */
1052
avahi_server_config_free(&config);
1053
}
1054
1055
/* Check if creating the Avahi server object succeeded */
1056
if (mc.server == NULL) {
1057
fprintf(stderr, "Failed to create Avahi server: %s\n",
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",
1058
840
avahi_strerror(error));
1059
exitcode = EXIT_FAILURE;
1060
goto end;
841
returncode = EXIT_FAILURE;
842
goto exit;
1061
843
}
1062
844
1063
/* Create the Avahi service browser */
845
/* Create the service browser */
1064
846
sb = avahi_s_service_browser_new(mc.server, if_index,
1065
847
AVAHI_PROTO_INET6,
1066
848
"_mandos._tcp", NULL, 0,
1067
849
browse_callback, &mc);
1068
if (sb == NULL) {
850
if (!sb) {
1069
851
fprintf(stderr, "Failed to create service browser: %s\n",
1070
852
avahi_strerror(avahi_server_errno(mc.server)));
1071
exitcode = EXIT_FAILURE;
1072
goto end;
853
returncode = EXIT_FAILURE;
854
goto exit;
1073
855
}
1074
856
1075
857
/* Run the main loop */
1076
858
1077
859
if (debug){
1078
fprintf(stderr, "Starting Avahi loop search\n");
860
fprintf(stderr, "Starting avahi loop search\n");
1079
861
}
1080
862
1081
863
avahi_simple_poll_loop(mc.simple_poll);
1082
864
1083
end:
1084
865
exit:
866
1085
867
if (debug){
1086
868
fprintf(stderr, "%s exiting\n", argv[0]);
1087
869
}
1088
870
1089
871
/* Cleanup things */
1090
if (sb != NULL)
872
if (sb)
1091
873
avahi_s_service_browser_free(sb);
1092
874
1093
if (mc.server != NULL)
875
if (mc.server)
1094
876
avahi_server_free(mc.server);
1095
1096
if (mc.simple_poll != NULL)
877
878
if (mc.simple_poll)
1097
879
avahi_simple_poll_free(mc.simple_poll);
1098
1099
if (gnutls_initalized){
1100
gnutls_certificate_free_credentials(mc.cred);
1101
gnutls_global_deinit ();
1102
gnutls_dh_params_deinit(mc.dh_params);
1103
}
1104
1105
if(gpgme_initalized){
1106
gpgme_release(mc.ctx);
1107
}
1108
1109
/* Removes the temp directory used by GPGME */
1110
if(tempdir[0] != '\0'){
1111
DIR *d;
1112
struct dirent *direntry;
1113
d = opendir(tempdir);
1114
if(d == NULL){
1115
perror("opendir");
1116
} else {
1117
while(true){
1118
direntry = readdir(d);
1119
if(direntry == NULL){
1120
break;
1121
}
1122
if (direntry->d_type == DT_REG){
1123
char *fullname = NULL;
1124
ret = asprintf(&fullname, "%s/%s", tempdir,
1125
direntry->d_name);
1126
if(ret < 0){
1127
perror("asprintf");
1128
continue;
1129
}
1130
ret = unlink(fullname);
1131
if(ret == -1){
1132
fprintf(stderr, "unlink(\"%s\"): %s",
1133
fullname, strerror(errno));
1134
}
1135
free(fullname);
1136
}
1137
}
1138
closedir(d);
1139
}
1140
ret = rmdir(tempdir);
1141
if(ret == -1){
1142
perror("rmdir");
1143
}
1144
}
1145
1146
return exitcode;
880
free(pubkeyfile);
881
free(seckeyfile);
882
883
return returncode;
1147
884
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0