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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/password-request.c => plugins.d/mandosclient.c
- plugins.d/password-prompt.c => plugins.d/passprompt.c
- mandos.conf => server.conf
- mandos => server.py
- files modified:
- Makefile
added
removed
plugins.d/mandosclient.c
32
32
#define _LARGEFILE_SOURCE
33
33
#define _FILE_OFFSET_BITS 64
34
34
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
36
37
#include <stdio.h> /* fprintf(), stderr, fwrite(),
38
stdout, ferror() */
39
#include <stdint.h> /* uint16_t, uint32_t */
40
#include <stddef.h> /* NULL, size_t, ssize_t */
41
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
42
srand() */
43
#include <stdbool.h> /* bool, true */
44
#include <string.h> /* memset(), strcmp(), strlen(),
45
strerror(), asprintf(), strcpy() */
46
#include <sys/ioctl.h> /* ioctl */
47
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
48
sockaddr_in6, PF_INET6,
49
SOCK_STREAM, INET6_ADDRSTRLEN,
50
uid_t, gid_t, 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 "pupkey.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 = "password-request 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
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
105
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 */
195
111
gpgme_check_version(NULL);
196
112
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
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
203
/* Set GPGME home directory for the OpenPGP engine only */
118
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
211
perror("pgpme_data_seek");
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
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){
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){
463
341
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
464
342
safer_gnutls_strerror(ret));
465
343
}
466
344
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
}
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;
477
351
}
478
352
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",
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",
483
357
safer_gnutls_strerror(ret));
484
gnutls_deinit (*session);
485
358
return -1;
486
359
}
487
360
494
367
return 0;
495
368
}
496
369
497
/* Avahi log function callback */
498
370
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
499
371
__attribute__((unused)) const char *txt){}
500
372
501
/* Called when a Mandos server is found */
502
373
static int start_mandos_communication(const char *ip, uint16_t port,
503
374
AvahiIfIndex if_index,
504
375
mandos_context *mc){
505
376
int ret, tcp_sd;
506
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
377
struct sockaddr_in6 to;
507
378
char *buffer = NULL;
508
379
char *decrypted_buffer;
509
380
size_t buffer_length = 0;
510
381
size_t buffer_capacity = 0;
511
382
ssize_t decrypted_buffer_size;
512
size_t written;
383
size_t written = 0;
513
384
int retval = 0;
514
385
char interface[IF_NAMESIZE];
515
386
gnutls_session_t session;
516
517
ret = init_gnutls_session (mc, &session);
518
if (ret != 0){
519
return -1;
520
}
387
gnutls_dh_params_t dh_params;
521
388
522
389
if(debug){
523
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
524
"\n", ip, port);
390
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
391
ip, port);
525
392
}
526
393
527
394
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
529
396
perror("socket");
530
397
return -1;
531
398
}
532
399
533
400
if(debug){
534
401
if(if_indextoname((unsigned int)if_index, interface) == NULL){
535
402
perror("if_indextoname");
538
405
fprintf(stderr, "Binding to interface %s\n", interface);
539
406
}
540
407
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);
408
memset(&to,0,sizeof(to)); /* Spurious warning */
409
to.sin6_family = AF_INET6;
410
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
546
411
if (ret < 0 ){
547
412
perror("inet_pton");
548
413
return -1;
551
416
fprintf(stderr, "Bad address: %s\n", ip);
552
417
return -1;
553
418
}
554
to.in6.sin6_port = htons(port); /* Spurious warning */
419
to.sin6_port = htons(port); /* Spurious warning */
555
420
556
to.in6.sin6_scope_id = (uint32_t)if_index;
421
to.sin6_scope_id = (uint32_t)if_index;
557
422
558
423
if(debug){
559
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
560
port);
424
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
561
425
char addrstr[INET6_ADDRSTRLEN] = "";
562
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
426
if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr,
563
427
sizeof(addrstr)) == NULL){
564
428
perror("inet_ntop");
565
429
} else {
569
433
}
570
434
}
571
435
572
ret = connect(tcp_sd, &to.in, sizeof(to));
436
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
573
437
if (ret < 0){
574
438
perror("connect");
575
439
return -1;
576
440
}
577
441
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
}
442
ret = initgnutls (mc, &session, &dh_params);
443
if (ret != 0){
444
retval = -1;
445
return -1;
600
446
}
601
447
448
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
449
602
450
if(debug){
603
451
fprintf(stderr, "Establishing TLS session with %s\n", ip);
604
452
}
605
453
606
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
607
608
do{
609
ret = gnutls_handshake (session);
610
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
454
ret = gnutls_handshake (session);
611
455
612
456
if (ret != GNUTLS_E_SUCCESS){
613
457
if(debug){
614
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
458
fprintf(stderr, "\n*** Handshake failed ***\n");
615
459
gnutls_perror (ret);
616
460
}
617
461
retval = -1;
618
goto mandos_end;
462
goto exit;
619
463
}
620
464
621
/* Read OpenPGP packet that contains the wanted password */
465
//Retrieve OpenPGP packet that contains the wanted password
622
466
623
467
if(debug){
624
468
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
625
469
ip);
626
470
}
627
471
628
472
while(true){
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;
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;
635
480
}
636
481
637
482
ret = gnutls_record_recv(session, buffer+buffer_length,
645
490
case GNUTLS_E_AGAIN:
646
491
break;
647
492
case GNUTLS_E_REHANDSHAKE:
648
do{
649
ret = gnutls_handshake (session);
650
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
493
ret = gnutls_handshake (session);
651
494
if (ret < 0){
652
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
495
fprintf(stderr, "\n*** Handshake failed ***\n");
653
496
gnutls_perror (ret);
654
497
retval = -1;
655
goto mandos_end;
498
goto exit;
656
499
}
657
500
break;
658
501
default:
659
502
fprintf(stderr, "Unknown error while reading data from"
660
" encrypted session with Mandos server\n");
503
" encrypted session with mandos server\n");
661
504
retval = -1;
662
505
gnutls_bye (session, GNUTLS_SHUT_RDWR);
663
goto mandos_end;
506
goto exit;
664
507
}
665
508
} else {
666
509
buffer_length += (size_t) ret;
667
510
}
668
511
}
669
512
670
if(debug){
671
fprintf(stderr, "Closing TLS session\n");
672
}
673
674
gnutls_bye (session, GNUTLS_SHUT_RDWR);
675
676
513
if (buffer_length > 0){
677
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
514
decrypted_buffer_size = pgp_packet_decrypt(buffer,
678
515
buffer_length,
679
&decrypted_buffer);
516
&decrypted_buffer,
517
keydir);
680
518
if (decrypted_buffer_size >= 0){
681
written = 0;
682
519
while(written < (size_t) decrypted_buffer_size){
683
520
ret = (int)fwrite (decrypted_buffer + written, 1,
684
521
(size_t)decrypted_buffer_size - written,
697
534
} else {
698
535
retval = -1;
699
536
}
700
} else {
701
retval = -1;
702
}
703
704
/* Shutdown procedure */
705
706
mandos_end:
537
}
538
539
//shutdown procedure
540
541
if(debug){
542
fprintf(stderr, "Closing TLS session\n");
543
}
544
707
545
free(buffer);
708
ret = TEMP_FAILURE_RETRY(close(tcp_sd));
709
if(ret == -1){
710
perror("close");
711
}
546
gnutls_bye (session, GNUTLS_SHUT_RDWR);
547
exit:
548
close(tcp_sd);
712
549
gnutls_deinit (session);
550
gnutls_certificate_free_credentials (mc->cred);
551
gnutls_global_deinit ();
713
552
return retval;
714
553
}
715
554
728
567
flags,
729
568
void* userdata) {
730
569
mandos_context *mc = userdata;
731
assert(r);
570
assert(r); /* Spurious warning */
732
571
733
572
/* Called whenever a service has been resolved successfully or
734
573
timed out */
736
575
switch (event) {
737
576
default:
738
577
case AVAHI_RESOLVER_FAILURE:
739
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
740
" 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,
741
580
avahi_strerror(avahi_server_errno(mc->server)));
742
581
break;
743
582
746
585
char ip[AVAHI_ADDRESS_STR_MAX];
747
586
avahi_address_snprint(ip, sizeof(ip), address);
748
587
if(debug){
749
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
750
PRIu16 ") on port %d\n", name, host_name, ip,
751
interface, port);
588
fprintf(stderr, "Mandos server \"%s\" found on %s (%s) on"
589
" port %d\n", name, host_name, ip, port);
752
590
}
753
591
int ret = start_mandos_communication(ip, port, interface, mc);
754
592
if (ret == 0){
755
avahi_simple_poll_quit(mc->simple_poll);
593
exit(EXIT_SUCCESS);
756
594
}
757
595
}
758
596
}
770
608
flags,
771
609
void* userdata) {
772
610
mandos_context *mc = userdata;
773
assert(b);
611
assert(b); /* Spurious warning */
774
612
775
613
/* Called whenever a new services becomes available on the LAN or
776
614
is removed from the LAN */
779
617
default:
780
618
case AVAHI_BROWSER_FAILURE:
781
619
782
fprintf(stderr, "(Avahi browser) %s\n",
620
fprintf(stderr, "(Browser) %s\n",
783
621
avahi_strerror(avahi_server_errno(mc->server)));
784
622
avahi_simple_poll_quit(mc->simple_poll);
785
623
return;
786
624
787
625
case AVAHI_BROWSER_NEW:
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. */
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. */
792
630
793
631
if (!(avahi_s_service_resolver_new(mc->server, interface,
794
632
protocol, name, type, domain,
795
633
AVAHI_PROTO_INET6, 0,
796
634
resolve_callback, mc)))
797
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
798
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)));
799
637
break;
800
638
801
639
case AVAHI_BROWSER_REMOVE:
803
641
804
642
case AVAHI_BROWSER_ALL_FOR_NOW:
805
643
case AVAHI_BROWSER_CACHE_EXHAUSTED:
806
if(debug){
807
fprintf(stderr, "No Mandos server found, still searching...\n");
808
}
809
644
break;
810
645
}
811
646
}
812
647
813
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;
814
671
AvahiSServiceBrowser *sb = NULL;
815
672
int error;
816
673
int ret;
817
int exitcode = EXIT_SUCCESS;
674
int debug_int;
675
int returncode = EXIT_SUCCESS;
818
676
const char *interface = "eth0";
819
677
struct ifreq network;
820
678
int sd;
821
uid_t uid;
822
gid_t gid;
823
679
char *connect_to = NULL;
824
char tempdir[] = "/tmp/mandosXXXXXX";
825
680
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
826
const char *seckey = PATHDIR "/" SECKEY;
827
const char *pubkey = PATHDIR "/" PUBKEY;
828
829
681
mandos_context mc = { .simple_poll = NULL, .server = NULL,
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
ret = init_gnutls_global(&mc, pubkey, seckey);
922
if (ret == -1){
923
fprintf(stderr, "init_gnutls_global failed\n");
924
exitcode = EXIT_FAILURE;
925
goto end;
926
} else {
927
gnutls_initalized = true;
928
}
929
930
if(mkdtemp(tempdir) == NULL){
931
perror("mkdtemp");
932
tempdir[0] = '\0';
933
goto end;
934
}
935
936
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
937
fprintf(stderr, "pgpme_initalized failed\n");
938
exitcode = EXIT_FAILURE;
939
goto end;
940
} else {
941
pgpme_initalized = true;
942
}
943
944
/* If the interface is down, bring it up */
945
{
946
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
947
if(sd < 0) {
948
perror("socket");
949
exitcode = EXIT_FAILURE;
950
goto end;
951
}
952
strcpy(network.ifr_name, interface);
953
ret = ioctl(sd, SIOCGIFFLAGS, &network);
954
if(ret == -1){
955
perror("ioctl SIOCGIFFLAGS");
956
exitcode = EXIT_FAILURE;
957
goto end;
958
}
959
if((network.ifr_flags & IFF_UP) == 0){
960
network.ifr_flags |= IFF_UP;
961
ret = ioctl(sd, SIOCSIFFLAGS, &network);
962
if(ret == -1){
963
perror("ioctl SIOCSIFFLAGS");
964
exitcode = EXIT_FAILURE;
965
goto end;
966
}
967
}
968
ret = TEMP_FAILURE_RETRY(close(sd));
969
if(ret == -1){
970
perror("close");
971
}
972
}
973
974
uid = getuid();
975
gid = getgid();
976
977
ret = setuid(uid);
978
if (ret == -1){
979
perror("setuid");
980
}
981
982
setgid(gid);
983
if (ret == -1){
984
perror("setgid");
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;
985
752
}
986
753
987
754
if_index = (AvahiIfIndex) if_nametoindex(interface);
996
763
char *address = strrchr(connect_to, ':');
997
764
if(address == NULL){
998
765
fprintf(stderr, "No colon in address\n");
999
exitcode = EXIT_FAILURE;
1000
goto end;
766
exit(EXIT_FAILURE);
1001
767
}
1002
768
errno = 0;
1003
769
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
1004
770
if(errno){
1005
771
perror("Bad port number");
1006
exitcode = EXIT_FAILURE;
1007
goto end;
772
exit(EXIT_FAILURE);
1008
773
}
1009
774
*address = '\0';
1010
775
address = connect_to;
1011
776
ret = start_mandos_communication(address, port, if_index, &mc);
1012
777
if(ret < 0){
1013
exitcode = EXIT_FAILURE;
778
exit(EXIT_FAILURE);
1014
779
} else {
1015
exitcode = EXIT_SUCCESS;
1016
}
1017
goto end;
1018
}
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);
1019
808
1020
809
if (not debug){
1021
810
avahi_set_log_function(empty_log);
1022
811
}
1023
812
1024
/* Initialize the pseudo-RNG for Avahi */
813
/* Initialize the psuedo-RNG */
1025
814
srand((unsigned int) time(NULL));
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",
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",
1057
840
avahi_strerror(error));
1058
exitcode = EXIT_FAILURE;
1059
goto end;
841
returncode = EXIT_FAILURE;
842
goto exit;
1060
843
}
1061
844
1062
/* Create the Avahi service browser */
845
/* Create the service browser */
1063
846
sb = avahi_s_service_browser_new(mc.server, if_index,
1064
847
AVAHI_PROTO_INET6,
1065
848
"_mandos._tcp", NULL, 0,
1066
849
browse_callback, &mc);
1067
if (sb == NULL) {
850
if (!sb) {
1068
851
fprintf(stderr, "Failed to create service browser: %s\n",
1069
852
avahi_strerror(avahi_server_errno(mc.server)));
1070
exitcode = EXIT_FAILURE;
1071
goto end;
853
returncode = EXIT_FAILURE;
854
goto exit;
1072
855
}
1073
856
1074
857
/* Run the main loop */
1075
858
1076
859
if (debug){
1077
fprintf(stderr, "Starting Avahi loop search\n");
860
fprintf(stderr, "Starting avahi loop search\n");
1078
861
}
1079
862
1080
863
avahi_simple_poll_loop(mc.simple_poll);
1081
864
1082
end:
1083
865
exit:
866
1084
867
if (debug){
1085
868
fprintf(stderr, "%s exiting\n", argv[0]);
1086
869
}
1087
870
1088
871
/* Cleanup things */
1089
if (sb != NULL)
872
if (sb)
1090
873
avahi_s_service_browser_free(sb);
1091
874
1092
if (mc.server != NULL)
875
if (mc.server)
1093
876
avahi_server_free(mc.server);
1094
1095
if (mc.simple_poll != NULL)
877
878
if (mc.simple_poll)
1096
879
avahi_simple_poll_free(mc.simple_poll);
880
free(pubkeyfile);
881
free(seckeyfile);
1097
882
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;
883
return returncode;
1144
884
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0