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- Committer: Teddy Hogeborn
- Date: 2009-01-27 00:07:26 UTC
- Revision ID: teddy@fukt.bsnet.se-20090127000726-4cafcfy35g8kh2b8
* INSTALL (Prerequisites/Mandos Server): Added "PyGObject".
- files added:
- .bzr-builddeb
- debian
- debian/po
- files removed:
- ca.pem
- files renamed:
- server.py => mandos
- server.conf => mandos.conf
- plugbasedclient.c => plugin-runner.c
- plugins.d/mandosclient.c => plugins.d/mandos-client.c
- plugins.d/passprompt.c => plugins.d/password-prompt.c
- files modified:
- Makefile
added
removed
plugins.d/mandos-client.c
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 © 2007-2008 Teddy Hogeborn & Björn Påhlsson
12
* Copyright © 2008,2009 Teddy Hogeborn
13
* Copyright © 2008,2009 Björn Påhlsson
13
14
*
14
15
* This program is free software: you can redistribute it and/or
15
16
* modify it under the terms of the GNU General Public License as
32
33
#define _LARGEFILE_SOURCE
33
34
#define _FILE_OFFSET_BITS 64
34
35
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
36
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
36
37
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 */
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() */
44
65
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
45
SIOCSIFFLAGS */
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 */
46
78
79
/* Avahi */
80
/* All Avahi types, constants and functions
81
Avahi*, avahi_*,
82
AVAHI_* */
47
83
#include <avahi-core/core.h>
48
84
#include <avahi-core/lookup.h>
49
85
#include <avahi-core/log.h>
51
87
#include <avahi-common/malloc.h>
52
88
#include <avahi-common/error.h>
53
89
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 */
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 */
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 */
68
99
69
100
/* GPGME */
70
#include <errno.h> /* perror() */
71
#include <gpgme.h>
72
73
/* getopt_long */
74
#include <getopt.h>
101
#include <gpgme.h> /* All GPGME types, constants and
102
functions:
103
gpgme_*
104
GPGME_PROTOCOL_OpenPGP,
105
GPG_ERR_NO_* */
75
106
76
107
#define BUFFER_SIZE 256
77
108
78
static const char *keydir = "/conf/conf.d/mandos";
79
static const char *pubkeyfile = "pubkey.txt";
80
static const char *seckeyfile = "seckey.txt";
109
#define PATHDIR "/conf/conf.d/mandos"
110
#define SECKEY "seckey.txt"
111
#define PUBKEY "pubkey.txt"
81
112
82
113
bool debug = false;
83
84
const char mandos_protocol_version[] = "1";
85
86
/* Used for passing in values through all the callback functions */
114
static const char mandos_protocol_version[] = "1";
115
const char *argp_program_version = "mandos-client " VERSION;
116
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
117
118
/* Used for passing in values through the Avahi callback functions */
87
119
typedef struct {
88
120
AvahiSimplePoll *simple_poll;
89
121
AvahiServer *server;
91
123
unsigned int dh_bits;
92
124
gnutls_dh_params_t dh_params;
93
125
const char *priority;
126
gpgme_ctx_t ctx;
94
127
} mandos_context;
95
128
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
*/
96
134
size_t adjustbuffer(char **buffer, size_t buffer_length,
97
135
size_t buffer_capacity){
98
if (buffer_length + BUFFER_SIZE > buffer_capacity){
136
if(buffer_length + BUFFER_SIZE > buffer_capacity){
99
137
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
100
if (buffer == NULL){
138
if(buffer == NULL){
101
139
return 0;
102
140
}
103
141
buffer_capacity += BUFFER_SIZE;
106
144
}
107
145
108
146
/*
109
* Decrypt OpenPGP data using keyrings in HOMEDIR.
110
* Returns -1 on error
147
* Initialize GPGME.
111
148
*/
112
static ssize_t pgp_packet_decrypt (const char *cryptotext,
113
size_t crypto_size,
114
char **plaintext,
115
const char *homedir){
116
gpgme_data_t dh_crypto, dh_plain;
117
gpgme_ctx_t ctx;
149
static bool init_gpgme(mandos_context *mc, const char *seckey,
150
const char *pubkey, const char *tempdir){
151
int ret;
118
152
gpgme_error_t rc;
119
ssize_t ret;
120
size_t plaintext_capacity = 0;
121
ssize_t plaintext_length = 0;
122
153
gpgme_engine_info_t engine_info;
123
154
124
if (debug){
125
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
155
156
/*
157
* Helper function to insert pub and seckey to the enigne 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");
126
193
}
127
194
128
195
/* Init GPGME */
129
196
gpgme_check_version(NULL);
130
197
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
131
if (rc != GPG_ERR_NO_ERROR){
198
if(rc != GPG_ERR_NO_ERROR){
132
199
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
133
200
gpgme_strsource(rc), gpgme_strerror(rc));
134
return -1;
201
return false;
135
202
}
136
203
137
/* Set GPGME home directory for the OpenPGP engine only */
138
rc = gpgme_get_engine_info (&engine_info);
139
if (rc != GPG_ERR_NO_ERROR){
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){
140
207
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
141
208
gpgme_strsource(rc), gpgme_strerror(rc));
142
return -1;
209
return false;
143
210
}
144
211
while(engine_info != NULL){
145
212
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
146
213
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
147
engine_info->file_name, homedir);
214
engine_info->file_name, tempdir);
148
215
break;
149
216
}
150
217
engine_info = engine_info->next;
151
218
}
152
219
if(engine_info == NULL){
153
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
154
return -1;
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");
155
255
}
156
256
157
257
/* Create new GPGME data buffer from memory cryptotext */
158
258
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
159
259
0);
160
if (rc != GPG_ERR_NO_ERROR){
260
if(rc != GPG_ERR_NO_ERROR){
161
261
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
162
262
gpgme_strsource(rc), gpgme_strerror(rc));
163
263
return -1;
165
265
166
266
/* Create new empty GPGME data buffer for the plaintext */
167
267
rc = gpgme_data_new(&dh_plain);
168
if (rc != GPG_ERR_NO_ERROR){
268
if(rc != GPG_ERR_NO_ERROR){
169
269
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
170
270
gpgme_strsource(rc), gpgme_strerror(rc));
171
271
gpgme_data_release(dh_crypto);
172
272
return -1;
173
273
}
174
274
175
/* Create new GPGME "context" */
176
rc = gpgme_new(&ctx);
177
if (rc != GPG_ERR_NO_ERROR){
178
fprintf(stderr, "bad gpgme_new: %s: %s\n",
179
gpgme_strsource(rc), gpgme_strerror(rc));
180
plaintext_length = -1;
181
goto decrypt_end;
182
}
183
184
275
/* Decrypt data from the cryptotext data buffer to the plaintext
185
276
data buffer */
186
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
187
if (rc != GPG_ERR_NO_ERROR){
277
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
278
if(rc != GPG_ERR_NO_ERROR){
188
279
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
189
280
gpgme_strsource(rc), gpgme_strerror(rc));
190
281
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
}
191
310
goto decrypt_end;
192
311
}
193
312
195
314
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
196
315
}
197
316
198
if (debug){
199
gpgme_decrypt_result_t result;
200
result = gpgme_op_decrypt_result(ctx);
201
if (result == NULL){
202
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
203
} else {
204
fprintf(stderr, "Unsupported algorithm: %s\n",
205
result->unsupported_algorithm);
206
fprintf(stderr, "Wrong key usage: %d\n",
207
result->wrong_key_usage);
208
if(result->file_name != NULL){
209
fprintf(stderr, "File name: %s\n", result->file_name);
210
}
211
gpgme_recipient_t recipient;
212
recipient = result->recipients;
213
if(recipient){
214
while(recipient != NULL){
215
fprintf(stderr, "Public key algorithm: %s\n",
216
gpgme_pubkey_algo_name(recipient->pubkey_algo));
217
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
218
fprintf(stderr, "Secret key available: %s\n",
219
recipient->status == GPG_ERR_NO_SECKEY
220
? "No" : "Yes");
221
recipient = recipient->next;
222
}
223
}
224
}
225
}
226
227
317
/* Seek back to the beginning of the GPGME plaintext data buffer */
228
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
229
perror("pgpme_data_seek");
318
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
319
perror("gpgme_data_seek");
230
320
plaintext_length = -1;
231
321
goto decrypt_end;
232
322
}
233
323
234
324
*plaintext = NULL;
235
325
while(true){
236
plaintext_capacity = adjustbuffer(plaintext, (size_t)plaintext_length,
326
plaintext_capacity = adjustbuffer(plaintext,
327
(size_t)plaintext_length,
237
328
plaintext_capacity);
238
if (plaintext_capacity == 0){
329
if(plaintext_capacity == 0){
239
330
perror("adjustbuffer");
240
331
plaintext_length = -1;
241
332
goto decrypt_end;
244
335
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
245
336
BUFFER_SIZE);
246
337
/* Print the data, if any */
247
if (ret == 0){
338
if(ret == 0){
248
339
/* EOF */
249
340
break;
250
341
}
255
346
}
256
347
plaintext_length += ret;
257
348
}
258
349
259
350
if(debug){
260
351
fprintf(stderr, "Decrypted password is: ");
261
352
for(ssize_t i = 0; i < plaintext_length; i++){
274
365
return plaintext_length;
275
366
}
276
367
277
static const char * safer_gnutls_strerror (int value) {
278
const char *ret = gnutls_strerror (value);
279
if (ret == NULL)
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)
280
372
ret = "(unknown)";
281
373
return ret;
282
374
}
287
379
fprintf(stderr, "GnuTLS: %s", string);
288
380
}
289
381
290
static int init_gnutls_global(mandos_context *mc){
382
static int init_gnutls_global(mandos_context *mc,
383
const char *pubkeyfilename,
384
const char *seckeyfilename){
291
385
int ret;
292
386
293
387
if(debug){
294
388
fprintf(stderr, "Initializing GnuTLS\n");
295
389
}
296
297
if ((ret = gnutls_global_init ())
298
!= GNUTLS_E_SUCCESS) {
299
fprintf (stderr, "GnuTLS global_init: %s\n",
300
safer_gnutls_strerror(ret));
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));
301
395
return -1;
302
396
}
303
397
304
if (debug){
398
if(debug){
305
399
/* "Use a log level over 10 to enable all debugging options."
306
400
* - GnuTLS manual
307
401
*/
310
404
}
311
405
312
406
/* OpenPGP credentials */
313
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
314
!= GNUTLS_E_SUCCESS) {
315
fprintf (stderr, "GnuTLS memory error: %s\n",
316
safer_gnutls_strerror(ret));
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();
317
415
return -1;
318
416
}
319
417
320
418
if(debug){
321
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
322
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
323
seckeyfile);
419
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
420
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
421
seckeyfilename);
324
422
}
325
423
326
424
ret = gnutls_certificate_set_openpgp_key_file
327
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
328
if (ret != GNUTLS_E_SUCCESS) {
425
(mc->cred, pubkeyfilename, seckeyfilename,
426
GNUTLS_OPENPGP_FMT_BASE64);
427
if(ret != GNUTLS_E_SUCCESS) {
329
428
fprintf(stderr,
330
429
"Error[%d] while reading the OpenPGP key pair ('%s',"
331
" '%s')\n", ret, pubkeyfile, seckeyfile);
332
fprintf(stdout, "The GnuTLS error is: %s\n",
430
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
431
fprintf(stderr, "The GnuTLS error is: %s\n",
333
432
safer_gnutls_strerror(ret));
334
return -1;
433
goto globalfail;
335
434
}
336
435
337
436
/* GnuTLS server initialization */
338
437
ret = gnutls_dh_params_init(&mc->dh_params);
339
if (ret != GNUTLS_E_SUCCESS) {
340
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
341
" %s\n", safer_gnutls_strerror(ret));
342
return -1;
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;
343
442
}
344
443
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
345
if (ret != GNUTLS_E_SUCCESS) {
346
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
347
safer_gnutls_strerror(ret));
348
return -1;
444
if(ret != GNUTLS_E_SUCCESS) {
445
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
446
safer_gnutls_strerror(ret));
447
goto globalfail;
349
448
}
350
449
351
450
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
352
451
353
452
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;
354
460
}
355
461
356
static int init_gnutls_session(mandos_context *mc, gnutls_session_t *session){
462
static int init_gnutls_session(mandos_context *mc,
463
gnutls_session_t *session){
357
464
int ret;
358
465
/* GnuTLS session creation */
359
466
ret = gnutls_init(session, GNUTLS_SERVER);
360
if (ret != GNUTLS_E_SUCCESS){
467
if(ret != GNUTLS_E_SUCCESS){
361
468
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
362
469
safer_gnutls_strerror(ret));
363
470
}
365
472
{
366
473
const char *err;
367
474
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
368
if (ret != GNUTLS_E_SUCCESS) {
475
if(ret != GNUTLS_E_SUCCESS) {
369
476
fprintf(stderr, "Syntax error at: %s\n", err);
370
477
fprintf(stderr, "GnuTLS error: %s\n",
371
478
safer_gnutls_strerror(ret));
479
gnutls_deinit(*session);
372
480
return -1;
373
481
}
374
482
}
375
483
376
484
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
377
485
mc->cred);
378
if (ret != GNUTLS_E_SUCCESS) {
486
if(ret != GNUTLS_E_SUCCESS) {
379
487
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
380
488
safer_gnutls_strerror(ret));
489
gnutls_deinit(*session);
381
490
return -1;
382
491
}
383
492
384
493
/* ignore client certificate if any. */
385
gnutls_certificate_server_set_request (*session,
386
GNUTLS_CERT_IGNORE);
494
gnutls_certificate_server_set_request(*session,
495
GNUTLS_CERT_IGNORE);
387
496
388
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
497
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
389
498
390
499
return 0;
391
500
}
399
508
AvahiIfIndex if_index,
400
509
mandos_context *mc){
401
510
int ret, tcp_sd;
402
struct sockaddr_in6 to;
511
ssize_t sret;
512
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
403
513
char *buffer = NULL;
404
514
char *decrypted_buffer;
405
515
size_t buffer_length = 0;
409
519
int retval = 0;
410
520
char interface[IF_NAMESIZE];
411
521
gnutls_session_t session;
412
gnutls_dh_params_t dh_params;
413
522
414
ret = init_gnutls_session (mc, &session);
415
if (ret != 0){
523
ret = init_gnutls_session(mc, &session);
524
if(ret != 0){
416
525
return -1;
417
526
}
418
527
419
528
if(debug){
420
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
421
ip, port);
529
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
530
"\n", ip, port);
422
531
}
423
532
424
533
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
426
535
perror("socket");
427
536
return -1;
428
537
}
429
538
430
539
if(debug){
431
540
if(if_indextoname((unsigned int)if_index, interface) == NULL){
432
541
perror("if_indextoname");
435
544
fprintf(stderr, "Binding to interface %s\n", interface);
436
545
}
437
546
438
memset(&to,0,sizeof(to)); /* Spurious warning */
439
to.sin6_family = AF_INET6;
547
memset(&to, 0, sizeof(to));
548
to.in6.sin6_family = AF_INET6;
440
549
/* It would be nice to have a way to detect if we were passed an
441
550
IPv4 address here. Now we assume an IPv6 address. */
442
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
443
if (ret < 0 ){
551
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
552
if(ret < 0 ){
444
553
perror("inet_pton");
445
554
return -1;
446
555
}
448
557
fprintf(stderr, "Bad address: %s\n", ip);
449
558
return -1;
450
559
}
451
to.sin6_port = htons(port); /* Spurious warning */
560
to.in6.sin6_port = htons(port); /* Spurious warnings from
561
-Wconversion and
562
-Wunreachable-code */
452
563
453
to.sin6_scope_id = (uint32_t)if_index;
564
to.in6.sin6_scope_id = (uint32_t)if_index;
454
565
455
566
if(debug){
456
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
567
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
568
port);
457
569
char addrstr[INET6_ADDRSTRLEN] = "";
458
if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr,
570
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
459
571
sizeof(addrstr)) == NULL){
460
572
perror("inet_ntop");
461
573
} else {
465
577
}
466
578
}
467
579
468
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
469
if (ret < 0){
580
ret = connect(tcp_sd, &to.in, sizeof(to));
581
if(ret < 0){
470
582
perror("connect");
471
583
return -1;
472
584
}
473
585
474
586
const char *out = mandos_protocol_version;
475
587
written = 0;
476
while (true){
588
while(true){
477
589
size_t out_size = strlen(out);
478
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
590
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
479
591
out_size - written));
480
if (ret == -1){
592
if(ret == -1){
481
593
perror("write");
482
594
retval = -1;
483
595
goto mandos_end;
486
598
if(written < out_size){
487
599
continue;
488
600
} else {
489
if (out == mandos_protocol_version){
601
if(out == mandos_protocol_version){
490
602
written = 0;
491
603
out = "\r\n";
492
604
} else {
494
606
}
495
607
}
496
608
}
497
609
498
610
if(debug){
499
611
fprintf(stderr, "Establishing TLS session with %s\n", ip);
500
612
}
501
613
502
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
503
504
ret = gnutls_handshake (session);
505
506
if (ret != GNUTLS_E_SUCCESS){
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){
507
621
if(debug){
508
622
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
509
gnutls_perror (ret);
623
gnutls_perror(ret);
510
624
}
511
625
retval = -1;
512
626
goto mandos_end;
518
632
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
519
633
ip);
520
634
}
521
635
522
636
while(true){
523
buffer_capacity = adjustbuffer(&buffer, buffer_length, buffer_capacity);
524
if (buffer_capacity == 0){
637
buffer_capacity = adjustbuffer(&buffer, buffer_length,
638
buffer_capacity);
639
if(buffer_capacity == 0){
525
640
perror("adjustbuffer");
526
641
retval = -1;
527
642
goto mandos_end;
528
643
}
529
644
530
ret = gnutls_record_recv(session, buffer+buffer_length,
531
BUFFER_SIZE);
532
if (ret == 0){
645
sret = gnutls_record_recv(session, buffer+buffer_length,
646
BUFFER_SIZE);
647
if(sret == 0){
533
648
break;
534
649
}
535
if (ret < 0){
536
switch(ret){
650
if(sret < 0){
651
switch(sret){
537
652
case GNUTLS_E_INTERRUPTED:
538
653
case GNUTLS_E_AGAIN:
539
654
break;
540
655
case GNUTLS_E_REHANDSHAKE:
541
ret = gnutls_handshake (session);
542
if (ret < 0){
656
do{
657
ret = gnutls_handshake(session);
658
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
659
if(ret < 0){
543
660
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
544
gnutls_perror (ret);
661
gnutls_perror(ret);
545
662
retval = -1;
546
663
goto mandos_end;
547
664
}
550
667
fprintf(stderr, "Unknown error while reading data from"
551
668
" encrypted session with Mandos server\n");
552
669
retval = -1;
553
gnutls_bye (session, GNUTLS_SHUT_RDWR);
670
gnutls_bye(session, GNUTLS_SHUT_RDWR);
554
671
goto mandos_end;
555
672
}
556
673
} else {
557
buffer_length += (size_t) ret;
674
buffer_length += (size_t) sret;
558
675
}
559
676
}
560
677
562
679
fprintf(stderr, "Closing TLS session\n");
563
680
}
564
681
565
gnutls_bye (session, GNUTLS_SHUT_RDWR);
682
gnutls_bye(session, GNUTLS_SHUT_RDWR);
566
683
567
if (buffer_length > 0){
568
decrypted_buffer_size = pgp_packet_decrypt(buffer,
684
if(buffer_length > 0){
685
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
569
686
buffer_length,
570
&decrypted_buffer,
571
keydir);
572
if (decrypted_buffer_size >= 0){
687
&decrypted_buffer);
688
if(decrypted_buffer_size >= 0){
573
689
written = 0;
574
690
while(written < (size_t) decrypted_buffer_size){
575
ret = (int)fwrite (decrypted_buffer + written, 1,
576
(size_t)decrypted_buffer_size - written,
577
stdout);
691
ret = (int)fwrite(decrypted_buffer + written, 1,
692
(size_t)decrypted_buffer_size - written,
693
stdout);
578
694
if(ret == 0 and ferror(stdout)){
579
695
if(debug){
580
696
fprintf(stderr, "Error writing encrypted data: %s\n",
589
705
} else {
590
706
retval = -1;
591
707
}
708
} else {
709
retval = -1;
592
710
}
593
711
594
712
/* Shutdown procedure */
595
713
596
714
mandos_end:
597
715
free(buffer);
598
close(tcp_sd);
599
gnutls_deinit (session);
600
gnutls_certificate_free_credentials (mc->cred);
601
gnutls_global_deinit ();
716
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
717
if(ret == -1){
718
perror("close");
719
}
720
gnutls_deinit(session);
602
721
return retval;
603
722
}
604
723
617
736
flags,
618
737
void* userdata) {
619
738
mandos_context *mc = userdata;
620
assert(r); /* Spurious warning */
739
assert(r);
621
740
622
741
/* Called whenever a service has been resolved successfully or
623
742
timed out */
624
743
625
switch (event) {
744
switch(event) {
626
745
default:
627
746
case AVAHI_RESOLVER_FAILURE:
628
747
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
635
754
char ip[AVAHI_ADDRESS_STR_MAX];
636
755
avahi_address_snprint(ip, sizeof(ip), address);
637
756
if(debug){
638
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
639
" port %d\n", name, host_name, ip, interface, port);
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);
640
760
}
641
761
int ret = start_mandos_communication(ip, port, interface, mc);
642
if (ret == 0){
643
exit(EXIT_SUCCESS);
762
if(ret == 0){
763
avahi_simple_poll_quit(mc->simple_poll);
644
764
}
645
765
}
646
766
}
658
778
flags,
659
779
void* userdata) {
660
780
mandos_context *mc = userdata;
661
assert(b); /* Spurious warning */
781
assert(b);
662
782
663
783
/* Called whenever a new services becomes available on the LAN or
664
784
is removed from the LAN */
665
785
666
switch (event) {
786
switch(event) {
667
787
default:
668
788
case AVAHI_BROWSER_FAILURE:
669
789
678
798
the callback function is called the Avahi server will free the
679
799
resolver for us. */
680
800
681
if (!(avahi_s_service_resolver_new(mc->server, interface,
801
if(!(avahi_s_service_resolver_new(mc->server, interface,
682
802
protocol, name, type, domain,
683
803
AVAHI_PROTO_INET6, 0,
684
804
resolve_callback, mc)))
698
818
}
699
819
}
700
820
701
/* Combines file name and path and returns the malloced new
702
string. some sane checks could/should be added */
703
static const char *combinepath(const char *first, const char *second){
704
size_t f_len = strlen(first);
705
size_t s_len = strlen(second);
706
char *tmp = malloc(f_len + s_len + 2);
707
if (tmp == NULL){
708
return NULL;
709
}
710
if(f_len > 0){
711
memcpy(tmp, first, f_len); /* Spurious warning */
712
}
713
tmp[f_len] = '/';
714
if(s_len > 0){
715
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
716
}
717
tmp[f_len + 1 + s_len] = '\0';
718
return tmp;
719
}
720
721
722
821
int main(int argc, char *argv[]){
723
822
AvahiSServiceBrowser *sb = NULL;
724
823
int error;
725
824
int ret;
825
intmax_t tmpmax;
826
int numchars;
726
827
int exitcode = EXIT_SUCCESS;
727
828
const char *interface = "eth0";
728
829
struct ifreq network;
730
831
uid_t uid;
731
832
gid_t gid;
732
833
char *connect_to = NULL;
834
char tempdir[] = "/tmp/mandosXXXXXX";
733
835
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
836
const char *seckey = PATHDIR "/" SECKEY;
837
const char *pubkey = PATHDIR "/" PUBKEY;
838
734
839
mandos_context mc = { .simple_poll = NULL, .server = NULL,
735
.dh_bits = 1024, .priority = "SECURE256"};
840
.dh_bits = 1024, .priority = "SECURE256"
841
":!CTYPE-X.509:+CTYPE-OPENPGP" };
842
bool gnutls_initialized = false;
843
bool gpgme_initialized = false;
736
844
737
845
{
738
/* Temporary int to get the address of for getopt_long */
739
int debug_int = debug ? 1 : 0;
740
while (true){
741
struct option long_options[] = {
742
{"debug", no_argument, &debug_int, 1},
743
{"connect", required_argument, NULL, 'c'},
744
{"interface", required_argument, NULL, 'i'},
745
{"keydir", required_argument, NULL, 'd'},
746
{"seckey", required_argument, NULL, 's'},
747
{"pubkey", required_argument, NULL, 'p'},
748
{"dh-bits", required_argument, NULL, 'D'},
749
{"priority", required_argument, NULL, 'P'},
750
{0, 0, 0, 0} };
751
752
int option_index = 0;
753
ret = getopt_long (argc, argv, "i:", long_options,
754
&option_index);
755
756
if (ret == -1){
757
break;
758
}
759
760
switch(ret){
761
case 0:
762
break;
763
case 'i':
764
interface = optarg;
765
break;
766
case 'c':
767
connect_to = optarg;
768
break;
769
case 'd':
770
keydir = optarg;
771
break;
772
case 'p':
773
pubkeyfile = optarg;
774
break;
775
case 's':
776
seckeyfile = optarg;
777
break;
778
case 'D':
779
errno = 0;
780
mc.dh_bits = (unsigned int) strtol(optarg, NULL, 10);
781
if (errno){
782
perror("strtol");
846
struct argp_option options[] = {
847
{ .name = "debug", .key = 128,
848
.doc = "Debug mode", .group = 3 },
849
{ .name = "connect", .key = 'c',
850
.arg = "ADDRESS:PORT",
851
.doc = "Connect directly to a specific Mandos server",
852
.group = 1 },
853
{ .name = "interface", .key = 'i',
854
.arg = "NAME",
855
.doc = "Interface that will be used to search for Mandos"
856
" servers",
857
.group = 1 },
858
{ .name = "seckey", .key = 's',
859
.arg = "FILE",
860
.doc = "OpenPGP secret key file base name",
861
.group = 1 },
862
{ .name = "pubkey", .key = 'p',
863
.arg = "FILE",
864
.doc = "OpenPGP public key file base name",
865
.group = 2 },
866
{ .name = "dh-bits", .key = 129,
867
.arg = "BITS",
868
.doc = "Bit length of the prime number used in the"
869
" Diffie-Hellman key exchange",
870
.group = 2 },
871
{ .name = "priority", .key = 130,
872
.arg = "STRING",
873
.doc = "GnuTLS priority string for the TLS handshake",
874
.group = 1 },
875
{ .name = NULL }
876
};
877
878
error_t parse_opt(int key, char *arg,
879
struct argp_state *state) {
880
switch(key) {
881
case 128: /* --debug */
882
debug = true;
883
break;
884
case 'c': /* --connect */
885
connect_to = arg;
886
break;
887
case 'i': /* --interface */
888
interface = arg;
889
break;
890
case 's': /* --seckey */
891
seckey = arg;
892
break;
893
case 'p': /* --pubkey */
894
pubkey = arg;
895
break;
896
case 129: /* --dh-bits */
897
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
898
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
899
or arg[numchars] != '\0'){
900
fprintf(stderr, "Bad number of DH bits\n");
783
901
exit(EXIT_FAILURE);
784
902
}
785
break;
786
case 'P':
787
mc.priority = optarg;
788
break;
789
case '?':
903
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
904
break;
905
case 130: /* --priority */
906
mc.priority = arg;
907
break;
908
case ARGP_KEY_ARG:
909
argp_usage(state);
910
case ARGP_KEY_END:
911
break;
790
912
default:
791
/* getopt_long() has already printed a message about the
792
unrcognized option, so just exit. */
793
exit(EXIT_FAILURE);
794
}
795
}
796
/* Set the global debug flag from the temporary int */
797
debug = debug_int ? true : false;
798
}
799
800
pubkeyfile = combinepath(keydir, pubkeyfile);
801
if (pubkeyfile == NULL){
802
perror("combinepath");
803
exitcode = EXIT_FAILURE;
804
goto end;
805
}
806
807
seckeyfile = combinepath(keydir, seckeyfile);
808
if (seckeyfile == NULL){
809
perror("combinepath");
810
goto end;
811
}
812
813
ret = init_gnutls_global(&mc);
814
if (ret == -1){
815
fprintf(stderr, "init_gnutls_global\n");
816
goto end;
817
}
818
913
return ARGP_ERR_UNKNOWN;
914
}
915
return 0;
916
}
917
918
struct argp argp = { .options = options, .parser = parse_opt,
919
.args_doc = "",
920
.doc = "Mandos client -- Get and decrypt"
921
" passwords from a Mandos server" };
922
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
923
if(ret == ARGP_ERR_UNKNOWN){
924
fprintf(stderr, "Unknown error while parsing arguments\n");
925
exitcode = EXIT_FAILURE;
926
goto end;
927
}
928
}
929
930
/* If the interface is down, bring it up */
931
{
932
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
933
if(sd < 0) {
934
perror("socket");
935
exitcode = EXIT_FAILURE;
936
goto end;
937
}
938
strcpy(network.ifr_name, interface);
939
ret = ioctl(sd, SIOCGIFFLAGS, &network);
940
if(ret == -1){
941
perror("ioctl SIOCGIFFLAGS");
942
exitcode = EXIT_FAILURE;
943
goto end;
944
}
945
if((network.ifr_flags & IFF_UP) == 0){
946
network.ifr_flags |= IFF_UP;
947
ret = ioctl(sd, SIOCSIFFLAGS, &network);
948
if(ret == -1){
949
perror("ioctl SIOCSIFFLAGS");
950
exitcode = EXIT_FAILURE;
951
goto end;
952
}
953
}
954
ret = (int)TEMP_FAILURE_RETRY(close(sd));
955
if(ret == -1){
956
perror("close");
957
}
958
}
959
819
960
uid = getuid();
820
961
gid = getgid();
821
962
822
963
ret = setuid(uid);
823
if (ret == -1){
964
if(ret == -1){
824
965
perror("setuid");
825
966
}
826
967
827
968
setgid(gid);
828
if (ret == -1){
969
if(ret == -1){
829
970
perror("setgid");
830
971
}
831
972
973
ret = init_gnutls_global(&mc, pubkey, seckey);
974
if(ret == -1){
975
fprintf(stderr, "init_gnutls_global failed\n");
976
exitcode = EXIT_FAILURE;
977
goto end;
978
} else {
979
gnutls_initialized = true;
980
}
981
982
if(mkdtemp(tempdir) == NULL){
983
perror("mkdtemp");
984
tempdir[0] = '\0';
985
goto end;
986
}
987
988
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
989
fprintf(stderr, "init_gpgme failed\n");
990
exitcode = EXIT_FAILURE;
991
goto end;
992
} else {
993
gpgme_initialized = true;
994
}
995
832
996
if_index = (AvahiIfIndex) if_nametoindex(interface);
833
997
if(if_index == 0){
834
998
fprintf(stderr, "No such interface: \"%s\"\n", interface);
844
1008
exitcode = EXIT_FAILURE;
845
1009
goto end;
846
1010
}
847
errno = 0;
848
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
849
if(errno){
850
perror("Bad port number");
1011
uint16_t port;
1012
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1013
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1014
or address[numchars+1] != '\0'){
1015
fprintf(stderr, "Bad port number\n");
851
1016
exitcode = EXIT_FAILURE;
852
1017
goto end;
853
1018
}
1019
port = (uint16_t)tmpmax;
854
1020
*address = '\0';
855
1021
address = connect_to;
856
1022
ret = start_mandos_communication(address, port, if_index, &mc);
862
1028
goto end;
863
1029
}
864
1030
865
/* If the interface is down, bring it up */
866
{
867
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
868
if(sd < 0) {
869
perror("socket");
870
exitcode = EXIT_FAILURE;
871
goto end;
872
}
873
strcpy(network.ifr_name, interface); /* Spurious warning */
874
ret = ioctl(sd, SIOCGIFFLAGS, &network);
875
if(ret == -1){
876
perror("ioctl SIOCGIFFLAGS");
877
exitcode = EXIT_FAILURE;
878
goto end;
879
}
880
if((network.ifr_flags & IFF_UP) == 0){
881
network.ifr_flags |= IFF_UP;
882
ret = ioctl(sd, SIOCSIFFLAGS, &network);
883
if(ret == -1){
884
perror("ioctl SIOCSIFFLAGS");
885
exitcode = EXIT_FAILURE;
886
goto end;
887
}
888
}
889
close(sd);
890
}
891
892
if (not debug){
1031
if(not debug){
893
1032
avahi_set_log_function(empty_log);
894
1033
}
895
1034
898
1037
899
1038
/* Allocate main Avahi loop object */
900
1039
mc.simple_poll = avahi_simple_poll_new();
901
if (mc.simple_poll == NULL) {
1040
if(mc.simple_poll == NULL) {
902
1041
fprintf(stderr, "Avahi: Failed to create simple poll"
903
1042
" object.\n");
904
1043
exitcode = EXIT_FAILURE;
905
1044
goto end;
906
1045
}
907
1046
908
1047
{
909
1048
AvahiServerConfig config;
910
1049
/* Do not publish any local Zeroconf records */
913
1052
config.publish_addresses = 0;
914
1053
config.publish_workstation = 0;
915
1054
config.publish_domain = 0;
916
1055
917
1056
/* Allocate a new server */
918
1057
mc.server = avahi_server_new(avahi_simple_poll_get
919
1058
(mc.simple_poll), &config, NULL,
920
1059
NULL, &error);
921
1060
922
1061
/* Free the Avahi configuration data */
923
1062
avahi_server_config_free(&config);
924
1063
}
925
1064
926
1065
/* Check if creating the Avahi server object succeeded */
927
if (mc.server == NULL) {
1066
if(mc.server == NULL) {
928
1067
fprintf(stderr, "Failed to create Avahi server: %s\n",
929
1068
avahi_strerror(error));
930
1069
exitcode = EXIT_FAILURE;
936
1075
AVAHI_PROTO_INET6,
937
1076
"_mandos._tcp", NULL, 0,
938
1077
browse_callback, &mc);
939
if (sb == NULL) {
1078
if(sb == NULL) {
940
1079
fprintf(stderr, "Failed to create service browser: %s\n",
941
1080
avahi_strerror(avahi_server_errno(mc.server)));
942
1081
exitcode = EXIT_FAILURE;
944
1083
}
945
1084
946
1085
/* Run the main loop */
947
948
if (debug){
1086
1087
if(debug){
949
1088
fprintf(stderr, "Starting Avahi loop search\n");
950
1089
}
951
1090
952
1091
avahi_simple_poll_loop(mc.simple_poll);
953
1092
954
1093
end:
955
956
if (debug){
1094
1095
if(debug){
957
1096
fprintf(stderr, "%s exiting\n", argv[0]);
958
1097
}
959
1098
960
1099
/* Cleanup things */
961
if (sb != NULL)
1100
if(sb != NULL)
962
1101
avahi_s_service_browser_free(sb);
963
1102
964
if (mc.server != NULL)
1103
if(mc.server != NULL)
965
1104
avahi_server_free(mc.server);
966
967
if (mc.simple_poll != NULL)
1105
1106
if(mc.simple_poll != NULL)
968
1107
avahi_simple_poll_free(mc.simple_poll);
969
free(pubkeyfile);
970
free(seckeyfile);
1108
1109
if(gnutls_initialized){
1110
gnutls_certificate_free_credentials(mc.cred);
1111
gnutls_global_deinit();
1112
gnutls_dh_params_deinit(mc.dh_params);
1113
}
1114
1115
if(gpgme_initialized){
1116
gpgme_release(mc.ctx);
1117
}
1118
1119
/* Removes the temp directory used by GPGME */
1120
if(tempdir[0] != '\0'){
1121
DIR *d;
1122
struct dirent *direntry;
1123
d = opendir(tempdir);
1124
if(d == NULL){
1125
if(errno != ENOENT){
1126
perror("opendir");
1127
}
1128
} else {
1129
while(true){
1130
direntry = readdir(d);
1131
if(direntry == NULL){
1132
break;
1133
}
1134
/* Skip "." and ".." */
1135
if(direntry->d_name[0] == '.'
1136
and (direntry->d_name[1] == '\0'
1137
or (direntry->d_name[1] == '.'
1138
and direntry->d_name[2] == '\0'))){
1139
continue;
1140
}
1141
char *fullname = NULL;
1142
ret = asprintf(&fullname, "%s/%s", tempdir,
1143
direntry->d_name);
1144
if(ret < 0){
1145
perror("asprintf");
1146
continue;
1147
}
1148
ret = remove(fullname);
1149
if(ret == -1){
1150
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1151
strerror(errno));
1152
}
1153
free(fullname);
1154
}
1155
closedir(d);
1156
}
1157
ret = rmdir(tempdir);
1158
if(ret == -1 and errno != ENOENT){
1159
perror("rmdir");
1160
}
1161
}
971
1162
972
1163
return exitcode;
973
1164
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0