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- Committer: Björn Påhlsson
- Date: 2008-08-04 15:50:19 UTC
- mto: (24.1.154 mandos) (237.4.3 mandos-release)
- mto: This revision was merged to the branch mainline in revision 42.
- Revision ID: belorn@braxen-20080804155019-uze55fh654j1f0ow
mandosclient
changed to argp
changed to argp
- files added:
- ca.pem
- files removed:
- .bzr-builddeb
- debian
- debian/po
- 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
1
1
/* -*- coding: utf-8 -*- */
2
2
/*
3
* Mandos-client - get and decrypt data from a Mandos server
3
* Mandos client - get and decrypt data from a Mandos server
4
4
*
5
5
* This program is partly derived from an example program for an Avahi
6
6
* service browser, downloaded from
9
9
* "browse_callback", and parts of "main".
10
10
*
11
11
* Everything else is
12
* Copyright © 2008,2009 Teddy Hogeborn
13
* Copyright © 2008,2009 Björn Påhlsson
12
* Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
14
13
*
15
14
* This program is free software: you can redistribute it and/or
16
15
* modify it under the terms of the GNU General Public License as
33
32
#define _LARGEFILE_SOURCE
34
33
#define _FILE_OFFSET_BITS 64
35
34
36
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
37
36
38
#include <stdio.h> /* fprintf(), stderr, fwrite(),
39
stdout, ferror(), sscanf(),
40
remove() */
41
#include <stdint.h> /* uint16_t, uint32_t */
42
#include <stddef.h> /* NULL, size_t, ssize_t */
43
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
44
srand() */
45
#include <stdbool.h> /* bool, true */
46
#include <string.h> /* memset(), strcmp(), strlen(),
47
strerror(), asprintf(), strcpy() */
48
#include <sys/ioctl.h> /* ioctl */
49
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
50
sockaddr_in6, PF_INET6,
51
SOCK_STREAM, INET6_ADDRSTRLEN,
52
uid_t, gid_t, open(), opendir(),
53
DIR */
54
#include <sys/stat.h> /* open() */
55
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
56
struct in6_addr, inet_pton(),
57
connect() */
58
#include <fcntl.h> /* open() */
59
#include <dirent.h> /* opendir(), struct dirent, readdir()
60
*/
61
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
62
#include <assert.h> /* assert() */
63
#include <errno.h> /* perror(), errno */
64
#include <time.h> /* time() */
37
#include <stdio.h>
38
#include <assert.h>
39
#include <stdlib.h>
40
#include <time.h>
41
#include <net/if.h> /* if_nametoindex */
42
#include <sys/ioctl.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
43
SIOCSIFFLAGS */
65
44
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
66
SIOCSIFFLAGS, if_indextoname(),
67
if_nametoindex(), IF_NAMESIZE */
68
#include <netinet/in.h>
69
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
70
getuid(), getgid(), setuid(),
71
setgid() */
72
#include <arpa/inet.h> /* inet_pton(), htons */
73
#include <iso646.h> /* not, and, or */
74
#include <argp.h> /* struct argp_option, error_t, struct
75
argp_state, struct argp,
76
argp_parse(), ARGP_KEY_ARG,
77
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
45
SIOCSIFFLAGS */
78
46
79
/* Avahi */
80
/* All Avahi types, constants and functions
81
Avahi*, avahi_*,
82
AVAHI_* */
83
47
#include <avahi-core/core.h>
84
48
#include <avahi-core/lookup.h>
85
49
#include <avahi-core/log.h>
87
51
#include <avahi-common/malloc.h>
88
52
#include <avahi-common/error.h>
89
53
90
/* GnuTLS */
91
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
92
functions:
93
gnutls_*
94
init_gnutls_session(),
95
GNUTLS_* */
96
#include <gnutls/openpgp.h>
97
/* gnutls_certificate_set_openpgp_key_file(),
98
GNUTLS_OPENPGP_FMT_BASE64 */
54
/* Mandos client part */
55
#include <sys/types.h> /* socket(), inet_pton() */
56
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
57
struct in6_addr, inet_pton() */
58
#include <gnutls/gnutls.h> /* All GnuTLS stuff */
59
#include <gnutls/openpgp.h> /* GnuTLS with openpgp stuff */
99
60
61
#include <unistd.h> /* close() */
62
#include <netinet/in.h>
63
#include <stdbool.h> /* true */
64
#include <string.h> /* memset */
65
#include <arpa/inet.h> /* inet_pton() */
66
#include <iso646.h> /* not */
67
#include <net/if.h> /* IF_NAMESIZE */
68
#include <argp.h> /* struct argp_option,
69
struct argp_state, struct argp,
70
argp_parse() */
100
71
/* GPGME */
101
#include <gpgme.h> /* All GPGME types, constants and
102
functions:
103
gpgme_*
104
GPGME_PROTOCOL_OpenPGP,
105
GPG_ERR_NO_* */
72
#include <errno.h> /* perror() */
73
#include <gpgme.h>
106
74
107
75
#define BUFFER_SIZE 256
108
76
109
#define PATHDIR "/conf/conf.d/mandos"
110
#define SECKEY "seckey.txt"
111
#define PUBKEY "pubkey.txt"
112
113
77
bool debug = false;
114
static const char mandos_protocol_version[] = "1";
115
const char *argp_program_version = "mandos-client " VERSION;
78
const char *keydir = "/conf/conf.d/mandos";
79
const char *argp_program_version = "mandosclient 0.9";
116
80
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
81
const char mandos_protocol_version[] = "1";
117
82
118
/* Used for passing in values through the Avahi callback functions */
83
/* Used for passing in values through all the callback functions */
119
84
typedef struct {
120
85
AvahiSimplePoll *simple_poll;
121
86
AvahiServer *server;
123
88
unsigned int dh_bits;
124
89
gnutls_dh_params_t dh_params;
125
90
const char *priority;
126
gpgme_ctx_t ctx;
127
91
} mandos_context;
128
92
129
/*
130
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
131
* "buffer_capacity" is how much is currently allocated,
132
* "buffer_length" is how much is already used.
133
*/
134
93
size_t adjustbuffer(char **buffer, size_t buffer_length,
135
94
size_t buffer_capacity){
136
if(buffer_length + BUFFER_SIZE > buffer_capacity){
95
if (buffer_length + BUFFER_SIZE > buffer_capacity){
137
96
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
138
if(buffer == NULL){
97
if (buffer == NULL){
139
98
return 0;
140
99
}
141
100
buffer_capacity += BUFFER_SIZE;
144
103
}
145
104
146
105
/*
147
* Initialize GPGME.
106
* Decrypt OpenPGP data using keyrings in HOMEDIR.
107
* Returns -1 on error
148
108
*/
149
static bool init_gpgme(mandos_context *mc, const char *seckey,
150
const char *pubkey, const char *tempdir){
151
int ret;
109
static ssize_t pgp_packet_decrypt (const char *cryptotext,
110
size_t crypto_size,
111
char **plaintext,
112
const char *homedir){
113
gpgme_data_t dh_crypto, dh_plain;
114
gpgme_ctx_t ctx;
152
115
gpgme_error_t rc;
116
ssize_t ret;
117
size_t plaintext_capacity = 0;
118
ssize_t plaintext_length = 0;
153
119
gpgme_engine_info_t engine_info;
154
120
155
156
/*
157
* Helper function to insert pub and seckey to the engine keyring.
158
*/
159
bool import_key(const char *filename){
160
int fd;
161
gpgme_data_t pgp_data;
162
163
fd = (int)TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
164
if(fd == -1){
165
perror("open");
166
return false;
167
}
168
169
rc = gpgme_data_new_from_fd(&pgp_data, fd);
170
if(rc != GPG_ERR_NO_ERROR){
171
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
172
gpgme_strsource(rc), gpgme_strerror(rc));
173
return false;
174
}
175
176
rc = gpgme_op_import(mc->ctx, pgp_data);
177
if(rc != GPG_ERR_NO_ERROR){
178
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
179
gpgme_strsource(rc), gpgme_strerror(rc));
180
return false;
181
}
182
183
ret = (int)TEMP_FAILURE_RETRY(close(fd));
184
if(ret == -1){
185
perror("close");
186
}
187
gpgme_data_release(pgp_data);
188
return true;
189
}
190
191
if(debug){
192
fprintf(stderr, "Initialize gpgme\n");
121
if (debug){
122
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
193
123
}
194
124
195
125
/* Init GPGME */
196
126
gpgme_check_version(NULL);
197
127
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
198
if(rc != GPG_ERR_NO_ERROR){
128
if (rc != GPG_ERR_NO_ERROR){
199
129
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
200
130
gpgme_strsource(rc), gpgme_strerror(rc));
201
return false;
131
return -1;
202
132
}
203
133
204
/* Set GPGME home directory for the OpenPGP engine only */
205
rc = gpgme_get_engine_info(&engine_info);
206
if(rc != GPG_ERR_NO_ERROR){
134
/* Set GPGME home directory for the OpenPGP engine only */
135
rc = gpgme_get_engine_info (&engine_info);
136
if (rc != GPG_ERR_NO_ERROR){
207
137
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
208
138
gpgme_strsource(rc), gpgme_strerror(rc));
209
return false;
139
return -1;
210
140
}
211
141
while(engine_info != NULL){
212
142
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
213
143
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
214
engine_info->file_name, tempdir);
144
engine_info->file_name, homedir);
215
145
break;
216
146
}
217
147
engine_info = engine_info->next;
218
148
}
219
149
if(engine_info == NULL){
220
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
221
return false;
222
}
223
224
/* Create new GPGME "context" */
225
rc = gpgme_new(&(mc->ctx));
226
if(rc != GPG_ERR_NO_ERROR){
227
fprintf(stderr, "bad gpgme_new: %s: %s\n",
228
gpgme_strsource(rc), gpgme_strerror(rc));
229
return false;
230
}
231
232
if(not import_key(pubkey) or not import_key(seckey)){
233
return false;
234
}
235
236
return true;
237
}
238
239
/*
240
* Decrypt OpenPGP data.
241
* Returns -1 on error
242
*/
243
static ssize_t pgp_packet_decrypt(const mandos_context *mc,
244
const char *cryptotext,
245
size_t crypto_size,
246
char **plaintext){
247
gpgme_data_t dh_crypto, dh_plain;
248
gpgme_error_t rc;
249
ssize_t ret;
250
size_t plaintext_capacity = 0;
251
ssize_t plaintext_length = 0;
252
253
if(debug){
254
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
150
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
151
return -1;
255
152
}
256
153
257
154
/* Create new GPGME data buffer from memory cryptotext */
258
155
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
259
156
0);
260
if(rc != GPG_ERR_NO_ERROR){
157
if (rc != GPG_ERR_NO_ERROR){
261
158
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
262
159
gpgme_strsource(rc), gpgme_strerror(rc));
263
160
return -1;
265
162
266
163
/* Create new empty GPGME data buffer for the plaintext */
267
164
rc = gpgme_data_new(&dh_plain);
268
if(rc != GPG_ERR_NO_ERROR){
165
if (rc != GPG_ERR_NO_ERROR){
269
166
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
270
167
gpgme_strsource(rc), gpgme_strerror(rc));
271
168
gpgme_data_release(dh_crypto);
272
169
return -1;
273
170
}
274
171
172
/* Create new GPGME "context" */
173
rc = gpgme_new(&ctx);
174
if (rc != GPG_ERR_NO_ERROR){
175
fprintf(stderr, "bad gpgme_new: %s: %s\n",
176
gpgme_strsource(rc), gpgme_strerror(rc));
177
plaintext_length = -1;
178
goto decrypt_end;
179
}
180
275
181
/* Decrypt data from the cryptotext data buffer to the plaintext
276
182
data buffer */
277
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
278
if(rc != GPG_ERR_NO_ERROR){
183
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
184
if (rc != GPG_ERR_NO_ERROR){
279
185
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
280
186
gpgme_strsource(rc), gpgme_strerror(rc));
281
187
plaintext_length = -1;
282
if(debug){
283
gpgme_decrypt_result_t result;
284
result = gpgme_op_decrypt_result(mc->ctx);
285
if(result == NULL){
286
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
287
} else {
288
fprintf(stderr, "Unsupported algorithm: %s\n",
289
result->unsupported_algorithm);
290
fprintf(stderr, "Wrong key usage: %u\n",
291
result->wrong_key_usage);
292
if(result->file_name != NULL){
293
fprintf(stderr, "File name: %s\n", result->file_name);
294
}
295
gpgme_recipient_t recipient;
296
recipient = result->recipients;
297
if(recipient){
298
while(recipient != NULL){
299
fprintf(stderr, "Public key algorithm: %s\n",
300
gpgme_pubkey_algo_name(recipient->pubkey_algo));
301
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
302
fprintf(stderr, "Secret key available: %s\n",
303
recipient->status == GPG_ERR_NO_SECKEY
304
? "No" : "Yes");
305
recipient = recipient->next;
306
}
307
}
308
}
309
}
310
188
goto decrypt_end;
311
189
}
312
190
314
192
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
315
193
}
316
194
195
if (debug){
196
gpgme_decrypt_result_t result;
197
result = gpgme_op_decrypt_result(ctx);
198
if (result == NULL){
199
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
200
} else {
201
fprintf(stderr, "Unsupported algorithm: %s\n",
202
result->unsupported_algorithm);
203
fprintf(stderr, "Wrong key usage: %d\n",
204
result->wrong_key_usage);
205
if(result->file_name != NULL){
206
fprintf(stderr, "File name: %s\n", result->file_name);
207
}
208
gpgme_recipient_t recipient;
209
recipient = result->recipients;
210
if(recipient){
211
while(recipient != NULL){
212
fprintf(stderr, "Public key algorithm: %s\n",
213
gpgme_pubkey_algo_name(recipient->pubkey_algo));
214
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
215
fprintf(stderr, "Secret key available: %s\n",
216
recipient->status == GPG_ERR_NO_SECKEY
217
? "No" : "Yes");
218
recipient = recipient->next;
219
}
220
}
221
}
222
}
223
317
224
/* Seek back to the beginning of the GPGME plaintext data buffer */
318
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
319
perror("gpgme_data_seek");
225
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
226
perror("pgpme_data_seek");
320
227
plaintext_length = -1;
321
228
goto decrypt_end;
322
229
}
323
230
324
231
*plaintext = NULL;
325
232
while(true){
326
plaintext_capacity = adjustbuffer(plaintext,
327
(size_t)plaintext_length,
233
plaintext_capacity = adjustbuffer(plaintext, (size_t)plaintext_length,
328
234
plaintext_capacity);
329
if(plaintext_capacity == 0){
235
if (plaintext_capacity == 0){
330
236
perror("adjustbuffer");
331
237
plaintext_length = -1;
332
238
goto decrypt_end;
335
241
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
336
242
BUFFER_SIZE);
337
243
/* Print the data, if any */
338
if(ret == 0){
244
if (ret == 0){
339
245
/* EOF */
340
246
break;
341
247
}
346
252
}
347
253
plaintext_length += ret;
348
254
}
349
255
350
256
if(debug){
351
257
fprintf(stderr, "Decrypted password is: ");
352
258
for(ssize_t i = 0; i < plaintext_length; i++){
365
271
return plaintext_length;
366
272
}
367
273
368
static const char * safer_gnutls_strerror(int value) {
369
const char *ret = gnutls_strerror(value); /* Spurious warning from
370
-Wunreachable-code */
371
if(ret == NULL)
274
static const char * safer_gnutls_strerror (int value) {
275
const char *ret = gnutls_strerror (value);
276
if (ret == NULL)
372
277
ret = "(unknown)";
373
278
return ret;
374
279
}
380
285
}
381
286
382
287
static int init_gnutls_global(mandos_context *mc,
383
const char *pubkeyfilename,
384
const char *seckeyfilename){
288
const char *pubkeyfile,
289
const char *seckeyfile){
385
290
int ret;
386
291
387
292
if(debug){
388
293
fprintf(stderr, "Initializing GnuTLS\n");
389
294
}
390
391
ret = gnutls_global_init();
392
if(ret != GNUTLS_E_SUCCESS) {
393
fprintf(stderr, "GnuTLS global_init: %s\n",
394
safer_gnutls_strerror(ret));
295
296
if ((ret = gnutls_global_init ())
297
!= GNUTLS_E_SUCCESS) {
298
fprintf (stderr, "GnuTLS global_init: %s\n",
299
safer_gnutls_strerror(ret));
395
300
return -1;
396
301
}
397
302
398
if(debug){
303
if (debug){
399
304
/* "Use a log level over 10 to enable all debugging options."
400
305
* - GnuTLS manual
401
306
*/
404
309
}
405
310
406
311
/* OpenPGP credentials */
407
gnutls_certificate_allocate_credentials(&mc->cred);
408
if(ret != GNUTLS_E_SUCCESS){
409
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
410
* from
411
* -Wunreachable-code
412
*/
413
safer_gnutls_strerror(ret));
414
gnutls_global_deinit();
312
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
313
!= GNUTLS_E_SUCCESS) {
314
fprintf (stderr, "GnuTLS memory error: %s\n",
315
safer_gnutls_strerror(ret));
415
316
return -1;
416
317
}
417
318
418
319
if(debug){
419
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
420
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
421
seckeyfilename);
320
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
321
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
322
seckeyfile);
422
323
}
423
324
424
325
ret = gnutls_certificate_set_openpgp_key_file
425
(mc->cred, pubkeyfilename, seckeyfilename,
426
GNUTLS_OPENPGP_FMT_BASE64);
427
if(ret != GNUTLS_E_SUCCESS) {
326
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
327
if (ret != GNUTLS_E_SUCCESS) {
428
328
fprintf(stderr,
429
329
"Error[%d] while reading the OpenPGP key pair ('%s',"
430
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
431
fprintf(stderr, "The GnuTLS error is: %s\n",
330
" '%s')\n", ret, pubkeyfile, seckeyfile);
331
fprintf(stdout, "The GnuTLS error is: %s\n",
432
332
safer_gnutls_strerror(ret));
433
goto globalfail;
333
return -1;
434
334
}
435
335
436
336
/* GnuTLS server initialization */
437
337
ret = gnutls_dh_params_init(&mc->dh_params);
438
if(ret != GNUTLS_E_SUCCESS) {
439
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
440
" %s\n", safer_gnutls_strerror(ret));
441
goto globalfail;
338
if (ret != GNUTLS_E_SUCCESS) {
339
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
340
" %s\n", safer_gnutls_strerror(ret));
341
return -1;
442
342
}
443
343
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
444
if(ret != GNUTLS_E_SUCCESS) {
445
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
446
safer_gnutls_strerror(ret));
447
goto globalfail;
344
if (ret != GNUTLS_E_SUCCESS) {
345
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
346
safer_gnutls_strerror(ret));
347
return -1;
448
348
}
449
349
450
350
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
451
351
452
352
return 0;
453
454
globalfail:
455
456
gnutls_certificate_free_credentials(mc->cred);
457
gnutls_global_deinit();
458
gnutls_dh_params_deinit(mc->dh_params);
459
return -1;
460
353
}
461
354
462
static int init_gnutls_session(mandos_context *mc,
463
gnutls_session_t *session){
355
static int init_gnutls_session(mandos_context *mc, gnutls_session_t *session){
464
356
int ret;
465
357
/* GnuTLS session creation */
466
358
ret = gnutls_init(session, GNUTLS_SERVER);
467
if(ret != GNUTLS_E_SUCCESS){
359
if (ret != GNUTLS_E_SUCCESS){
468
360
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
469
361
safer_gnutls_strerror(ret));
470
362
}
472
364
{
473
365
const char *err;
474
366
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
475
if(ret != GNUTLS_E_SUCCESS) {
367
if (ret != GNUTLS_E_SUCCESS) {
476
368
fprintf(stderr, "Syntax error at: %s\n", err);
477
369
fprintf(stderr, "GnuTLS error: %s\n",
478
370
safer_gnutls_strerror(ret));
479
gnutls_deinit(*session);
480
371
return -1;
481
372
}
482
373
}
483
374
484
375
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
485
376
mc->cred);
486
if(ret != GNUTLS_E_SUCCESS) {
377
if (ret != GNUTLS_E_SUCCESS) {
487
378
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
488
379
safer_gnutls_strerror(ret));
489
gnutls_deinit(*session);
490
380
return -1;
491
381
}
492
382
493
383
/* ignore client certificate if any. */
494
gnutls_certificate_server_set_request(*session,
495
GNUTLS_CERT_IGNORE);
384
gnutls_certificate_server_set_request (*session,
385
GNUTLS_CERT_IGNORE);
496
386
497
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
387
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
498
388
499
389
return 0;
500
390
}
508
398
AvahiIfIndex if_index,
509
399
mandos_context *mc){
510
400
int ret, tcp_sd;
511
ssize_t sret;
512
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
401
struct sockaddr_in6 to;
513
402
char *buffer = NULL;
514
403
char *decrypted_buffer;
515
404
size_t buffer_length = 0;
519
408
int retval = 0;
520
409
char interface[IF_NAMESIZE];
521
410
gnutls_session_t session;
411
gnutls_dh_params_t dh_params;
522
412
523
ret = init_gnutls_session(mc, &session);
524
if(ret != 0){
413
ret = init_gnutls_session (mc, &session);
414
if (ret != 0){
525
415
return -1;
526
416
}
527
417
528
418
if(debug){
529
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
530
"\n", ip, port);
419
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
420
ip, port);
531
421
}
532
422
533
423
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
535
425
perror("socket");
536
426
return -1;
537
427
}
538
428
539
429
if(debug){
540
430
if(if_indextoname((unsigned int)if_index, interface) == NULL){
541
431
perror("if_indextoname");
544
434
fprintf(stderr, "Binding to interface %s\n", interface);
545
435
}
546
436
547
memset(&to, 0, sizeof(to));
548
to.in6.sin6_family = AF_INET6;
437
memset(&to,0,sizeof(to)); /* Spurious warning */
438
to.sin6_family = AF_INET6;
549
439
/* It would be nice to have a way to detect if we were passed an
550
440
IPv4 address here. Now we assume an IPv6 address. */
551
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
552
if(ret < 0 ){
441
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
442
if (ret < 0 ){
553
443
perror("inet_pton");
554
444
return -1;
555
445
}
557
447
fprintf(stderr, "Bad address: %s\n", ip);
558
448
return -1;
559
449
}
560
to.in6.sin6_port = htons(port); /* Spurious warnings from
561
-Wconversion and
562
-Wunreachable-code */
450
to.sin6_port = htons(port); /* Spurious warning */
563
451
564
to.in6.sin6_scope_id = (uint32_t)if_index;
452
to.sin6_scope_id = (uint32_t)if_index;
565
453
566
454
if(debug){
567
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
568
port);
455
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
569
456
char addrstr[INET6_ADDRSTRLEN] = "";
570
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
457
if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr,
571
458
sizeof(addrstr)) == NULL){
572
459
perror("inet_ntop");
573
460
} else {
577
464
}
578
465
}
579
466
580
ret = connect(tcp_sd, &to.in, sizeof(to));
581
if(ret < 0){
467
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
468
if (ret < 0){
582
469
perror("connect");
583
470
return -1;
584
471
}
585
472
586
473
const char *out = mandos_protocol_version;
587
474
written = 0;
588
while(true){
475
while (true){
589
476
size_t out_size = strlen(out);
590
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
477
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
591
478
out_size - written));
592
if(ret == -1){
479
if (ret == -1){
593
480
perror("write");
594
481
retval = -1;
595
482
goto mandos_end;
598
485
if(written < out_size){
599
486
continue;
600
487
} else {
601
if(out == mandos_protocol_version){
488
if (out == mandos_protocol_version){
602
489
written = 0;
603
490
out = "\r\n";
604
491
} else {
606
493
}
607
494
}
608
495
}
609
496
610
497
if(debug){
611
498
fprintf(stderr, "Establishing TLS session with %s\n", ip);
612
499
}
613
500
614
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
615
616
do{
617
ret = gnutls_handshake(session);
618
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
619
620
if(ret != GNUTLS_E_SUCCESS){
501
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
502
503
ret = gnutls_handshake (session);
504
505
if (ret != GNUTLS_E_SUCCESS){
621
506
if(debug){
622
507
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
623
gnutls_perror(ret);
508
gnutls_perror (ret);
624
509
}
625
510
retval = -1;
626
511
goto mandos_end;
632
517
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
633
518
ip);
634
519
}
635
520
636
521
while(true){
637
buffer_capacity = adjustbuffer(&buffer, buffer_length,
638
buffer_capacity);
639
if(buffer_capacity == 0){
522
buffer_capacity = adjustbuffer(&buffer, buffer_length, buffer_capacity);
523
if (buffer_capacity == 0){
640
524
perror("adjustbuffer");
641
525
retval = -1;
642
526
goto mandos_end;
643
527
}
644
528
645
sret = gnutls_record_recv(session, buffer+buffer_length,
646
BUFFER_SIZE);
647
if(sret == 0){
529
ret = gnutls_record_recv(session, buffer+buffer_length,
530
BUFFER_SIZE);
531
if (ret == 0){
648
532
break;
649
533
}
650
if(sret < 0){
651
switch(sret){
534
if (ret < 0){
535
switch(ret){
652
536
case GNUTLS_E_INTERRUPTED:
653
537
case GNUTLS_E_AGAIN:
654
538
break;
655
539
case GNUTLS_E_REHANDSHAKE:
656
do{
657
ret = gnutls_handshake(session);
658
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
659
if(ret < 0){
540
ret = gnutls_handshake (session);
541
if (ret < 0){
660
542
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
661
gnutls_perror(ret);
543
gnutls_perror (ret);
662
544
retval = -1;
663
545
goto mandos_end;
664
546
}
667
549
fprintf(stderr, "Unknown error while reading data from"
668
550
" encrypted session with Mandos server\n");
669
551
retval = -1;
670
gnutls_bye(session, GNUTLS_SHUT_RDWR);
552
gnutls_bye (session, GNUTLS_SHUT_RDWR);
671
553
goto mandos_end;
672
554
}
673
555
} else {
674
buffer_length += (size_t) sret;
556
buffer_length += (size_t) ret;
675
557
}
676
558
}
677
559
679
561
fprintf(stderr, "Closing TLS session\n");
680
562
}
681
563
682
gnutls_bye(session, GNUTLS_SHUT_RDWR);
564
gnutls_bye (session, GNUTLS_SHUT_RDWR);
683
565
684
if(buffer_length > 0){
685
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
566
if (buffer_length > 0){
567
decrypted_buffer_size = pgp_packet_decrypt(buffer,
686
568
buffer_length,
687
&decrypted_buffer);
688
if(decrypted_buffer_size >= 0){
569
&decrypted_buffer,
570
keydir);
571
if (decrypted_buffer_size >= 0){
689
572
written = 0;
690
573
while(written < (size_t) decrypted_buffer_size){
691
ret = (int)fwrite(decrypted_buffer + written, 1,
692
(size_t)decrypted_buffer_size - written,
693
stdout);
574
ret = (int)fwrite (decrypted_buffer + written, 1,
575
(size_t)decrypted_buffer_size - written,
576
stdout);
694
577
if(ret == 0 and ferror(stdout)){
695
578
if(debug){
696
579
fprintf(stderr, "Error writing encrypted data: %s\n",
705
588
} else {
706
589
retval = -1;
707
590
}
708
} else {
709
retval = -1;
710
591
}
711
592
712
593
/* Shutdown procedure */
713
594
714
595
mandos_end:
715
596
free(buffer);
716
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
717
if(ret == -1){
718
perror("close");
719
}
720
gnutls_deinit(session);
597
close(tcp_sd);
598
gnutls_deinit (session);
599
gnutls_certificate_free_credentials (mc->cred);
600
gnutls_global_deinit ();
721
601
return retval;
722
602
}
723
603
736
616
flags,
737
617
void* userdata) {
738
618
mandos_context *mc = userdata;
739
assert(r);
619
assert(r); /* Spurious warning */
740
620
741
621
/* Called whenever a service has been resolved successfully or
742
622
timed out */
743
623
744
switch(event) {
624
switch (event) {
745
625
default:
746
626
case AVAHI_RESOLVER_FAILURE:
747
627
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
754
634
char ip[AVAHI_ADDRESS_STR_MAX];
755
635
avahi_address_snprint(ip, sizeof(ip), address);
756
636
if(debug){
757
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
758
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
759
ip, (intmax_t)interface, port);
637
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
638
" port %d\n", name, host_name, ip, interface, port);
760
639
}
761
640
int ret = start_mandos_communication(ip, port, interface, mc);
762
if(ret == 0){
763
avahi_simple_poll_quit(mc->simple_poll);
641
if (ret == 0){
642
exit(EXIT_SUCCESS);
764
643
}
765
644
}
766
645
}
778
657
flags,
779
658
void* userdata) {
780
659
mandos_context *mc = userdata;
781
assert(b);
660
assert(b); /* Spurious warning */
782
661
783
662
/* Called whenever a new services becomes available on the LAN or
784
663
is removed from the LAN */
785
664
786
switch(event) {
665
switch (event) {
787
666
default:
788
667
case AVAHI_BROWSER_FAILURE:
789
668
798
677
the callback function is called the Avahi server will free the
799
678
resolver for us. */
800
679
801
if(!(avahi_s_service_resolver_new(mc->server, interface,
680
if (!(avahi_s_service_resolver_new(mc->server, interface,
802
681
protocol, name, type, domain,
803
682
AVAHI_PROTO_INET6, 0,
804
683
resolve_callback, mc)))
818
697
}
819
698
}
820
699
700
/* Combines file name and path and returns the malloced new
701
string. some sane checks could/should be added */
702
static const char *combinepath(const char *first, const char *second){
703
size_t f_len = strlen(first);
704
size_t s_len = strlen(second);
705
char *tmp = malloc(f_len + s_len + 2);
706
if (tmp == NULL){
707
return NULL;
708
}
709
if(f_len > 0){
710
memcpy(tmp, first, f_len); /* Spurious warning */
711
}
712
tmp[f_len] = '/';
713
if(s_len > 0){
714
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
715
}
716
tmp[f_len + 1 + s_len] = '\0';
717
return tmp;
718
}
719
720
821
721
int main(int argc, char *argv[]){
822
722
AvahiSServiceBrowser *sb = NULL;
823
723
int error;
824
724
int ret;
825
intmax_t tmpmax;
826
int numchars;
827
725
int exitcode = EXIT_SUCCESS;
828
726
const char *interface = "eth0";
829
727
struct ifreq network;
831
729
uid_t uid;
832
730
gid_t gid;
833
731
char *connect_to = NULL;
834
char tempdir[] = "/tmp/mandosXXXXXX";
835
bool tempdir_created = false;
836
732
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
837
const char *seckey = PATHDIR "/" SECKEY;
838
const char *pubkey = PATHDIR "/" PUBKEY;
839
733
const char *pubkeyfile = "pubkey.txt";
734
const char *seckeyfile = "seckey.txt";
840
735
mandos_context mc = { .simple_poll = NULL, .server = NULL,
841
.dh_bits = 1024, .priority = "SECURE256"
842
":!CTYPE-X.509:+CTYPE-OPENPGP" };
843
bool gnutls_initialized = false;
844
bool gpgme_initialized = false;
736
.dh_bits = 1024, .priority = "SECURE256"};
845
737
846
738
{
847
739
struct argp_option options[] = {
848
740
{ .name = "debug", .key = 128,
849
741
.doc = "Debug mode", .group = 3 },
850
742
{ .name = "connect", .key = 'c',
851
.arg = "ADDRESS:PORT",
852
.doc = "Connect directly to a specific Mandos server",
853
.group = 1 },
743
.arg = "IP",
744
.doc = "Connect directly to a sepcified mandos server", .group = 1 },
854
745
{ .name = "interface", .key = 'i',
855
.arg = "NAME",
856
.doc = "Interface that will be used to search for Mandos"
857
" servers",
858
.group = 1 },
746
.arg = "INTERFACE",
747
.doc = "Interface that Avahi will conntect through", .group = 1 },
748
{ .name = "keydir", .key = 'd',
749
.arg = "KEYDIR",
750
.doc = "Directory where the openpgp keyring is", .group = 1 },
859
751
{ .name = "seckey", .key = 's',
860
.arg = "FILE",
861
.doc = "OpenPGP secret key file base name",
862
.group = 1 },
752
.arg = "SECKEY",
753
.doc = "Secret openpgp key for gnutls authentication", .group = 1 },
863
754
{ .name = "pubkey", .key = 'p',
864
.arg = "FILE",
865
.doc = "OpenPGP public key file base name",
866
.group = 2 },
755
.arg = "PUBKEY",
756
.doc = "Public openpgp key for gnutls authentication", .group = 2 },
867
757
{ .name = "dh-bits", .key = 129,
868
758
.arg = "BITS",
869
.doc = "Bit length of the prime number used in the"
870
" Diffie-Hellman key exchange",
871
.group = 2 },
759
.doc = "dh-bits to use in gnutls communication", .group = 2 },
872
760
{ .name = "priority", .key = 130,
873
.arg = "STRING",
874
.doc = "GnuTLS priority string for the TLS handshake",
875
.group = 1 },
761
.arg = "PRIORITY",
762
.doc = "GNUTLS priority", .group = 1 },
876
763
{ .name = NULL }
877
764
};
765
878
766
879
error_t parse_opt(int key, char *arg,
880
struct argp_state *state) {
881
switch(key) {
882
case 128: /* --debug */
767
error_t parse_opt (int key, char *arg, struct argp_state *state) {
768
/* Get the INPUT argument from `argp_parse', which we know is a
769
pointer to our plugin list pointer. */
770
switch (key) {
771
case 128:
883
772
debug = true;
884
773
break;
885
case 'c': /* --connect */
774
case 'c':
886
775
connect_to = arg;
887
776
break;
888
case 'i': /* --interface */
777
case 'i':
889
778
interface = arg;
890
779
break;
891
case 's': /* --seckey */
892
seckey = arg;
893
break;
894
case 'p': /* --pubkey */
895
pubkey = arg;
896
break;
897
case 129: /* --dh-bits */
898
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
899
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
900
or arg[numchars] != '\0'){
901
fprintf(stderr, "Bad number of DH bits\n");
780
case 'd':
781
keydir = arg;
782
break;
783
case 's':
784
seckeyfile = arg;
785
break;
786
case 'p':
787
pubkeyfile = arg;
788
break;
789
case 129:
790
errno = 0;
791
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
792
if (errno){
793
perror("strtol");
902
794
exit(EXIT_FAILURE);
903
795
}
904
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
905
796
break;
906
case 130: /* --priority */
797
case 130:
907
798
mc.priority = arg;
908
799
break;
909
800
case ARGP_KEY_ARG:
910
argp_usage(state);
911
case ARGP_KEY_END:
801
argp_usage (state);
912
802
break;
803
case ARGP_KEY_END:
804
break;
913
805
default:
914
806
return ARGP_ERR_UNKNOWN;
915
807
}
916
808
return 0;
917
809
}
918
810
919
811
struct argp argp = { .options = options, .parser = parse_opt,
920
812
.args_doc = "",
921
.doc = "Mandos client -- Get and decrypt"
922
" passwords from a Mandos server" };
923
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
924
if(ret == ARGP_ERR_UNKNOWN){
925
fprintf(stderr, "Unknown error while parsing arguments\n");
926
exitcode = EXIT_FAILURE;
927
goto end;
928
}
929
}
930
931
/* If the interface is down, bring it up */
932
{
933
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
934
if(sd < 0) {
935
perror("socket");
936
exitcode = EXIT_FAILURE;
937
goto end;
938
}
939
strcpy(network.ifr_name, interface);
940
ret = ioctl(sd, SIOCGIFFLAGS, &network);
941
if(ret == -1){
942
perror("ioctl SIOCGIFFLAGS");
943
exitcode = EXIT_FAILURE;
944
goto end;
945
}
946
if((network.ifr_flags & IFF_UP) == 0){
947
network.ifr_flags |= IFF_UP;
948
ret = ioctl(sd, SIOCSIFFLAGS, &network);
949
if(ret == -1){
950
perror("ioctl SIOCSIFFLAGS");
951
exitcode = EXIT_FAILURE;
952
goto end;
953
}
954
}
955
ret = (int)TEMP_FAILURE_RETRY(close(sd));
956
if(ret == -1){
957
perror("close");
958
}
959
}
960
813
.doc = "Mandos client -- Get and decrypt passwords from mandos server" };
814
argp_parse (&argp, argc, argv, 0, 0, NULL);
815
}
816
817
pubkeyfile = combinepath(keydir, pubkeyfile);
818
if (pubkeyfile == NULL){
819
perror("combinepath");
820
exitcode = EXIT_FAILURE;
821
goto end;
822
}
823
824
seckeyfile = combinepath(keydir, seckeyfile);
825
if (seckeyfile == NULL){
826
perror("combinepath");
827
goto end;
828
}
829
830
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
831
if (ret == -1){
832
fprintf(stderr, "init_gnutls_global\n");
833
goto end;
834
}
835
961
836
uid = getuid();
962
837
gid = getgid();
963
838
964
839
ret = setuid(uid);
965
if(ret == -1){
840
if (ret == -1){
966
841
perror("setuid");
967
842
}
968
843
969
844
setgid(gid);
970
if(ret == -1){
845
if (ret == -1){
971
846
perror("setgid");
972
847
}
973
848
974
ret = init_gnutls_global(&mc, pubkey, seckey);
975
if(ret == -1){
976
fprintf(stderr, "init_gnutls_global failed\n");
977
exitcode = EXIT_FAILURE;
978
goto end;
979
} else {
980
gnutls_initialized = true;
981
}
982
983
if(mkdtemp(tempdir) == NULL){
984
perror("mkdtemp");
985
goto end;
986
}
987
tempdir_created = true;
988
989
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
990
fprintf(stderr, "init_gpgme failed\n");
991
exitcode = EXIT_FAILURE;
992
goto end;
993
} else {
994
gpgme_initialized = true;
995
}
996
997
849
if_index = (AvahiIfIndex) if_nametoindex(interface);
998
850
if(if_index == 0){
999
851
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1000
exitcode = EXIT_FAILURE;
1001
goto end;
852
exit(EXIT_FAILURE);
1002
853
}
1003
854
1004
855
if(connect_to != NULL){
1010
861
exitcode = EXIT_FAILURE;
1011
862
goto end;
1012
863
}
1013
uint16_t port;
1014
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1015
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1016
or address[numchars+1] != '\0'){
1017
fprintf(stderr, "Bad port number\n");
864
errno = 0;
865
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
866
if(errno){
867
perror("Bad port number");
1018
868
exitcode = EXIT_FAILURE;
1019
869
goto end;
1020
870
}
1021
port = (uint16_t)tmpmax;
1022
871
*address = '\0';
1023
872
address = connect_to;
1024
873
ret = start_mandos_communication(address, port, if_index, &mc);
1030
879
goto end;
1031
880
}
1032
881
1033
if(not debug){
882
/* If the interface is down, bring it up */
883
{
884
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
885
if(sd < 0) {
886
perror("socket");
887
exitcode = EXIT_FAILURE;
888
goto end;
889
}
890
strcpy(network.ifr_name, interface); /* Spurious warning */
891
ret = ioctl(sd, SIOCGIFFLAGS, &network);
892
if(ret == -1){
893
perror("ioctl SIOCGIFFLAGS");
894
exitcode = EXIT_FAILURE;
895
goto end;
896
}
897
if((network.ifr_flags & IFF_UP) == 0){
898
network.ifr_flags |= IFF_UP;
899
ret = ioctl(sd, SIOCSIFFLAGS, &network);
900
if(ret == -1){
901
perror("ioctl SIOCSIFFLAGS");
902
exitcode = EXIT_FAILURE;
903
goto end;
904
}
905
}
906
close(sd);
907
}
908
909
if (not debug){
1034
910
avahi_set_log_function(empty_log);
1035
911
}
1036
912
1039
915
1040
916
/* Allocate main Avahi loop object */
1041
917
mc.simple_poll = avahi_simple_poll_new();
1042
if(mc.simple_poll == NULL) {
918
if (mc.simple_poll == NULL) {
1043
919
fprintf(stderr, "Avahi: Failed to create simple poll"
1044
920
" object.\n");
1045
921
exitcode = EXIT_FAILURE;
1046
922
goto end;
1047
923
}
1048
924
1049
925
{
1050
926
AvahiServerConfig config;
1051
927
/* Do not publish any local Zeroconf records */
1054
930
config.publish_addresses = 0;
1055
931
config.publish_workstation = 0;
1056
932
config.publish_domain = 0;
1057
933
1058
934
/* Allocate a new server */
1059
935
mc.server = avahi_server_new(avahi_simple_poll_get
1060
936
(mc.simple_poll), &config, NULL,
1061
937
NULL, &error);
1062
938
1063
939
/* Free the Avahi configuration data */
1064
940
avahi_server_config_free(&config);
1065
941
}
1066
942
1067
943
/* Check if creating the Avahi server object succeeded */
1068
if(mc.server == NULL) {
944
if (mc.server == NULL) {
1069
945
fprintf(stderr, "Failed to create Avahi server: %s\n",
1070
946
avahi_strerror(error));
1071
947
exitcode = EXIT_FAILURE;
1077
953
AVAHI_PROTO_INET6,
1078
954
"_mandos._tcp", NULL, 0,
1079
955
browse_callback, &mc);
1080
if(sb == NULL) {
956
if (sb == NULL) {
1081
957
fprintf(stderr, "Failed to create service browser: %s\n",
1082
958
avahi_strerror(avahi_server_errno(mc.server)));
1083
959
exitcode = EXIT_FAILURE;
1085
961
}
1086
962
1087
963
/* Run the main loop */
1088
1089
if(debug){
964
965
if (debug){
1090
966
fprintf(stderr, "Starting Avahi loop search\n");
1091
967
}
1092
968
1093
969
avahi_simple_poll_loop(mc.simple_poll);
1094
970
1095
971
end:
1096
1097
if(debug){
972
973
if (debug){
1098
974
fprintf(stderr, "%s exiting\n", argv[0]);
1099
975
}
1100
976
1101
977
/* Cleanup things */
1102
if(sb != NULL)
978
if (sb != NULL)
1103
979
avahi_s_service_browser_free(sb);
1104
980
1105
if(mc.server != NULL)
981
if (mc.server != NULL)
1106
982
avahi_server_free(mc.server);
1107
1108
if(mc.simple_poll != NULL)
983
984
if (mc.simple_poll != NULL)
1109
985
avahi_simple_poll_free(mc.simple_poll);
1110
1111
if(gnutls_initialized){
1112
gnutls_certificate_free_credentials(mc.cred);
1113
gnutls_global_deinit();
1114
gnutls_dh_params_deinit(mc.dh_params);
1115
}
1116
1117
if(gpgme_initialized){
1118
gpgme_release(mc.ctx);
1119
}
1120
1121
/* Removes the temp directory used by GPGME */
1122
if(tempdir_created){
1123
DIR *d;
1124
struct dirent *direntry;
1125
d = opendir(tempdir);
1126
if(d == NULL){
1127
if(errno != ENOENT){
1128
perror("opendir");
1129
}
1130
} else {
1131
while(true){
1132
direntry = readdir(d);
1133
if(direntry == NULL){
1134
break;
1135
}
1136
/* Skip "." and ".." */
1137
if(direntry->d_name[0] == '.'
1138
and (direntry->d_name[1] == '\0'
1139
or (direntry->d_name[1] == '.'
1140
and direntry->d_name[2] == '\0'))){
1141
continue;
1142
}
1143
char *fullname = NULL;
1144
ret = asprintf(&fullname, "%s/%s", tempdir,
1145
direntry->d_name);
1146
if(ret < 0){
1147
perror("asprintf");
1148
continue;
1149
}
1150
ret = remove(fullname);
1151
if(ret == -1){
1152
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1153
strerror(errno));
1154
}
1155
free(fullname);
1156
}
1157
closedir(d);
1158
}
1159
ret = rmdir(tempdir);
1160
if(ret == -1 and errno != ENOENT){
1161
perror("rmdir");
1162
}
1163
}
986
free(pubkeyfile);
987
free(seckeyfile);
1164
988
1165
989
return exitcode;
1166
990
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0