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- Committer: Teddy Hogeborn
- Date: 2009-01-15 05:27:55 UTC
- mfrom: (237.2.9 mandos-release)
- Revision ID: teddy@fukt.bsnet.se-20090115052755-luw0gjx8727p24o3
Merge from release branch.
- 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
#include <stdint.h> /* uint16_t, uint32_t */
41
#include <stddef.h> /* NULL, size_t, ssize_t */
42
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
43
srand() */
44
#include <stdbool.h> /* bool, true */
45
#include <string.h> /* memset(), strcmp(), strlen(),
46
strerror(), asprintf(), strcpy() */
47
#include <sys/ioctl.h> /* ioctl */
48
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
49
sockaddr_in6, PF_INET6,
50
SOCK_STREAM, INET6_ADDRSTRLEN,
51
uid_t, gid_t, open(), opendir(),
52
DIR */
53
#include <sys/stat.h> /* open() */
54
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
55
struct in6_addr, inet_pton(),
56
connect() */
57
#include <fcntl.h> /* open() */
58
#include <dirent.h> /* opendir(), struct dirent, readdir()
59
*/
60
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
61
#include <assert.h> /* assert() */
62
#include <errno.h> /* perror(), errno */
63
#include <time.h> /* time() */
44
64
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
45
SIOCSIFFLAGS */
65
SIOCSIFFLAGS, if_indextoname(),
66
if_nametoindex(), IF_NAMESIZE */
67
#include <netinet/in.h>
68
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
69
getuid(), getgid(), setuid(),
70
setgid() */
71
#include <arpa/inet.h> /* inet_pton(), htons */
72
#include <iso646.h> /* not, and, or */
73
#include <argp.h> /* struct argp_option, error_t, struct
74
argp_state, struct argp,
75
argp_parse(), ARGP_KEY_ARG,
76
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
46
77
78
/* Avahi */
79
/* All Avahi types, constants and functions
80
Avahi*, avahi_*,
81
AVAHI_* */
47
82
#include <avahi-core/core.h>
48
83
#include <avahi-core/lookup.h>
49
84
#include <avahi-core/log.h>
51
86
#include <avahi-common/malloc.h>
52
87
#include <avahi-common/error.h>
53
88
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 */
89
/* GnuTLS */
90
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
91
functions:
92
gnutls_*
93
init_gnutls_session(),
94
GNUTLS_* */
95
#include <gnutls/openpgp.h>
96
/* gnutls_certificate_set_openpgp_key_file(),
97
GNUTLS_OPENPGP_FMT_BASE64 */
68
98
69
99
/* GPGME */
70
#include <errno.h> /* perror() */
71
#include <gpgme.h>
72
73
/* getopt_long */
74
#include <getopt.h>
100
#include <gpgme.h> /* All GPGME types, constants and
101
functions:
102
gpgme_*
103
GPGME_PROTOCOL_OpenPGP,
104
GPG_ERR_NO_* */
75
105
76
106
#define BUFFER_SIZE 256
77
107
78
static const char *keydir = "/conf/conf.d/mandos";
79
static const char *pubkeyfile = "pubkey.txt";
80
static const char *seckeyfile = "seckey.txt";
108
#define PATHDIR "/conf/conf.d/mandos"
109
#define SECKEY "seckey.txt"
110
#define PUBKEY "pubkey.txt"
81
111
82
112
bool debug = false;
83
84
const char mandos_protocol_version[] = "1";
85
86
/* Used for passing in values through all the callback functions */
113
static const char mandos_protocol_version[] = "1";
114
const char *argp_program_version = "mandos-client " VERSION;
115
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
116
117
/* Used for passing in values through the Avahi callback functions */
87
118
typedef struct {
88
119
AvahiSimplePoll *simple_poll;
89
120
AvahiServer *server;
91
122
unsigned int dh_bits;
92
123
gnutls_dh_params_t dh_params;
93
124
const char *priority;
125
gpgme_ctx_t ctx;
94
126
} mandos_context;
95
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
*/
96
133
size_t adjustbuffer(char **buffer, size_t buffer_length,
97
134
size_t buffer_capacity){
98
if (buffer_length + BUFFER_SIZE > buffer_capacity){
135
if(buffer_length + BUFFER_SIZE > buffer_capacity){
99
136
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
100
if (buffer == NULL){
137
if(buffer == NULL){
101
138
return 0;
102
139
}
103
140
buffer_capacity += BUFFER_SIZE;
106
143
}
107
144
108
145
/*
109
* Decrypt OpenPGP data using keyrings in HOMEDIR.
110
* Returns -1 on error
146
* Initialize GPGME.
111
147
*/
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;
148
static bool init_gpgme(mandos_context *mc, const char *seckey,
149
const char *pubkey, const char *tempdir){
150
int ret;
118
151
gpgme_error_t rc;
119
ssize_t ret;
120
size_t plaintext_capacity = 0;
121
ssize_t plaintext_length = 0;
122
152
gpgme_engine_info_t engine_info;
123
153
124
if (debug){
125
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
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 = (int)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 = (int)TEMP_FAILURE_RETRY(close(fd));
183
if(ret == -1){
184
perror("close");
185
}
186
gpgme_data_release(pgp_data);
187
return true;
188
}
189
190
if(debug){
191
fprintf(stderr, "Initialize gpgme\n");
126
192
}
127
193
128
194
/* Init GPGME */
129
195
gpgme_check_version(NULL);
130
196
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
131
if (rc != GPG_ERR_NO_ERROR){
197
if(rc != GPG_ERR_NO_ERROR){
132
198
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
133
199
gpgme_strsource(rc), gpgme_strerror(rc));
134
return -1;
200
return false;
135
201
}
136
202
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){
203
/* Set GPGME home directory for the OpenPGP engine only */
204
rc = gpgme_get_engine_info(&engine_info);
205
if(rc != GPG_ERR_NO_ERROR){
140
206
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
141
207
gpgme_strsource(rc), gpgme_strerror(rc));
142
return -1;
208
return false;
143
209
}
144
210
while(engine_info != NULL){
145
211
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
146
212
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
147
engine_info->file_name, homedir);
213
engine_info->file_name, tempdir);
148
214
break;
149
215
}
150
216
engine_info = engine_info->next;
151
217
}
152
218
if(engine_info == NULL){
153
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
154
return -1;
219
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
220
return false;
221
}
222
223
/* Create new GPGME "context" */
224
rc = gpgme_new(&(mc->ctx));
225
if(rc != GPG_ERR_NO_ERROR){
226
fprintf(stderr, "bad gpgme_new: %s: %s\n",
227
gpgme_strsource(rc), gpgme_strerror(rc));
228
return false;
229
}
230
231
if(not import_key(pubkey) or not import_key(seckey)){
232
return false;
233
}
234
235
return true;
236
}
237
238
/*
239
* Decrypt OpenPGP data.
240
* Returns -1 on error
241
*/
242
static ssize_t pgp_packet_decrypt(const mandos_context *mc,
243
const char *cryptotext,
244
size_t crypto_size,
245
char **plaintext){
246
gpgme_data_t dh_crypto, dh_plain;
247
gpgme_error_t rc;
248
ssize_t ret;
249
size_t plaintext_capacity = 0;
250
ssize_t plaintext_length = 0;
251
252
if(debug){
253
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
155
254
}
156
255
157
256
/* Create new GPGME data buffer from memory cryptotext */
158
257
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
159
258
0);
160
if (rc != GPG_ERR_NO_ERROR){
259
if(rc != GPG_ERR_NO_ERROR){
161
260
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
162
261
gpgme_strsource(rc), gpgme_strerror(rc));
163
262
return -1;
165
264
166
265
/* Create new empty GPGME data buffer for the plaintext */
167
266
rc = gpgme_data_new(&dh_plain);
168
if (rc != GPG_ERR_NO_ERROR){
267
if(rc != GPG_ERR_NO_ERROR){
169
268
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
170
269
gpgme_strsource(rc), gpgme_strerror(rc));
171
270
gpgme_data_release(dh_crypto);
172
271
return -1;
173
272
}
174
273
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
274
/* Decrypt data from the cryptotext data buffer to the plaintext
185
275
data buffer */
186
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
187
if (rc != GPG_ERR_NO_ERROR){
276
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
277
if(rc != GPG_ERR_NO_ERROR){
188
278
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
189
279
gpgme_strsource(rc), gpgme_strerror(rc));
190
280
plaintext_length = -1;
281
if(debug){
282
gpgme_decrypt_result_t result;
283
result = gpgme_op_decrypt_result(mc->ctx);
284
if(result == NULL){
285
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
286
} else {
287
fprintf(stderr, "Unsupported algorithm: %s\n",
288
result->unsupported_algorithm);
289
fprintf(stderr, "Wrong key usage: %u\n",
290
result->wrong_key_usage);
291
if(result->file_name != NULL){
292
fprintf(stderr, "File name: %s\n", result->file_name);
293
}
294
gpgme_recipient_t recipient;
295
recipient = result->recipients;
296
if(recipient){
297
while(recipient != NULL){
298
fprintf(stderr, "Public key algorithm: %s\n",
299
gpgme_pubkey_algo_name(recipient->pubkey_algo));
300
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
301
fprintf(stderr, "Secret key available: %s\n",
302
recipient->status == GPG_ERR_NO_SECKEY
303
? "No" : "Yes");
304
recipient = recipient->next;
305
}
306
}
307
}
308
}
191
309
goto decrypt_end;
192
310
}
193
311
195
313
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
196
314
}
197
315
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
316
/* 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");
317
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
318
perror("gpgme_data_seek");
230
319
plaintext_length = -1;
231
320
goto decrypt_end;
232
321
}
233
322
234
323
*plaintext = NULL;
235
324
while(true){
236
plaintext_capacity = adjustbuffer(plaintext, (size_t)plaintext_length,
325
plaintext_capacity = adjustbuffer(plaintext,
326
(size_t)plaintext_length,
237
327
plaintext_capacity);
238
if (plaintext_capacity == 0){
328
if(plaintext_capacity == 0){
239
329
perror("adjustbuffer");
240
330
plaintext_length = -1;
241
331
goto decrypt_end;
244
334
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
245
335
BUFFER_SIZE);
246
336
/* Print the data, if any */
247
if (ret == 0){
337
if(ret == 0){
248
338
/* EOF */
249
339
break;
250
340
}
255
345
}
256
346
plaintext_length += ret;
257
347
}
258
348
259
349
if(debug){
260
350
fprintf(stderr, "Decrypted password is: ");
261
351
for(ssize_t i = 0; i < plaintext_length; i++){
274
364
return plaintext_length;
275
365
}
276
366
277
static const char * safer_gnutls_strerror (int value) {
278
const char *ret = gnutls_strerror (value);
279
if (ret == NULL)
367
static const char * safer_gnutls_strerror(int value) {
368
const char *ret = gnutls_strerror(value); /* Spurious warning from
369
-Wunreachable-code */
370
if(ret == NULL)
280
371
ret = "(unknown)";
281
372
return ret;
282
373
}
287
378
fprintf(stderr, "GnuTLS: %s", string);
288
379
}
289
380
290
static int init_gnutls_global(mandos_context *mc){
381
static int init_gnutls_global(mandos_context *mc,
382
const char *pubkeyfilename,
383
const char *seckeyfilename){
291
384
int ret;
292
385
293
386
if(debug){
294
387
fprintf(stderr, "Initializing GnuTLS\n");
295
388
}
296
297
if ((ret = gnutls_global_init ())
298
!= GNUTLS_E_SUCCESS) {
299
fprintf (stderr, "GnuTLS global_init: %s\n",
300
safer_gnutls_strerror(ret));
389
390
ret = gnutls_global_init();
391
if(ret != GNUTLS_E_SUCCESS) {
392
fprintf(stderr, "GnuTLS global_init: %s\n",
393
safer_gnutls_strerror(ret));
301
394
return -1;
302
395
}
303
396
304
if (debug){
397
if(debug){
305
398
/* "Use a log level over 10 to enable all debugging options."
306
399
* - GnuTLS manual
307
400
*/
310
403
}
311
404
312
405
/* 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));
406
gnutls_certificate_allocate_credentials(&mc->cred);
407
if(ret != GNUTLS_E_SUCCESS){
408
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
409
* from
410
* -Wunreachable-code
411
*/
412
safer_gnutls_strerror(ret));
413
gnutls_global_deinit();
317
414
return -1;
318
415
}
319
416
320
417
if(debug){
321
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
322
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
323
seckeyfile);
418
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
419
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
420
seckeyfilename);
324
421
}
325
422
326
423
ret = gnutls_certificate_set_openpgp_key_file
327
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
328
if (ret != GNUTLS_E_SUCCESS) {
424
(mc->cred, pubkeyfilename, seckeyfilename,
425
GNUTLS_OPENPGP_FMT_BASE64);
426
if(ret != GNUTLS_E_SUCCESS) {
329
427
fprintf(stderr,
330
428
"Error[%d] while reading the OpenPGP key pair ('%s',"
331
" '%s')\n", ret, pubkeyfile, seckeyfile);
332
fprintf(stdout, "The GnuTLS error is: %s\n",
429
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
430
fprintf(stderr, "The GnuTLS error is: %s\n",
333
431
safer_gnutls_strerror(ret));
334
return -1;
432
goto globalfail;
335
433
}
336
434
337
435
/* GnuTLS server initialization */
338
436
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;
437
if(ret != GNUTLS_E_SUCCESS) {
438
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
439
" %s\n", safer_gnutls_strerror(ret));
440
goto globalfail;
343
441
}
344
442
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;
443
if(ret != GNUTLS_E_SUCCESS) {
444
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
445
safer_gnutls_strerror(ret));
446
goto globalfail;
349
447
}
350
448
351
449
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
352
450
353
451
return 0;
452
453
globalfail:
454
455
gnutls_certificate_free_credentials(mc->cred);
456
gnutls_global_deinit();
457
gnutls_dh_params_deinit(mc->dh_params);
458
return -1;
354
459
}
355
460
356
static int init_gnutls_session(mandos_context *mc, gnutls_session_t *session){
461
static int init_gnutls_session(mandos_context *mc,
462
gnutls_session_t *session){
357
463
int ret;
358
464
/* GnuTLS session creation */
359
465
ret = gnutls_init(session, GNUTLS_SERVER);
360
if (ret != GNUTLS_E_SUCCESS){
466
if(ret != GNUTLS_E_SUCCESS){
361
467
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
362
468
safer_gnutls_strerror(ret));
363
469
}
365
471
{
366
472
const char *err;
367
473
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
368
if (ret != GNUTLS_E_SUCCESS) {
474
if(ret != GNUTLS_E_SUCCESS) {
369
475
fprintf(stderr, "Syntax error at: %s\n", err);
370
476
fprintf(stderr, "GnuTLS error: %s\n",
371
477
safer_gnutls_strerror(ret));
478
gnutls_deinit(*session);
372
479
return -1;
373
480
}
374
481
}
375
482
376
483
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
377
484
mc->cred);
378
if (ret != GNUTLS_E_SUCCESS) {
485
if(ret != GNUTLS_E_SUCCESS) {
379
486
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
380
487
safer_gnutls_strerror(ret));
488
gnutls_deinit(*session);
381
489
return -1;
382
490
}
383
491
384
492
/* ignore client certificate if any. */
385
gnutls_certificate_server_set_request (*session,
386
GNUTLS_CERT_IGNORE);
493
gnutls_certificate_server_set_request(*session,
494
GNUTLS_CERT_IGNORE);
387
495
388
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
496
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
389
497
390
498
return 0;
391
499
}
399
507
AvahiIfIndex if_index,
400
508
mandos_context *mc){
401
509
int ret, tcp_sd;
402
struct sockaddr_in6 to;
510
ssize_t sret;
511
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
403
512
char *buffer = NULL;
404
513
char *decrypted_buffer;
405
514
size_t buffer_length = 0;
409
518
int retval = 0;
410
519
char interface[IF_NAMESIZE];
411
520
gnutls_session_t session;
412
gnutls_dh_params_t dh_params;
413
521
414
ret = init_gnutls_session (mc, &session);
415
if (ret != 0){
522
ret = init_gnutls_session(mc, &session);
523
if(ret != 0){
416
524
return -1;
417
525
}
418
526
419
527
if(debug){
420
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
421
ip, port);
528
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
529
"\n", ip, port);
422
530
}
423
531
424
532
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
426
534
perror("socket");
427
535
return -1;
428
536
}
429
537
430
538
if(debug){
431
539
if(if_indextoname((unsigned int)if_index, interface) == NULL){
432
540
perror("if_indextoname");
435
543
fprintf(stderr, "Binding to interface %s\n", interface);
436
544
}
437
545
438
memset(&to,0,sizeof(to)); /* Spurious warning */
439
to.sin6_family = AF_INET6;
546
memset(&to, 0, sizeof(to));
547
to.in6.sin6_family = AF_INET6;
440
548
/* It would be nice to have a way to detect if we were passed an
441
549
IPv4 address here. Now we assume an IPv6 address. */
442
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
443
if (ret < 0 ){
550
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
551
if(ret < 0 ){
444
552
perror("inet_pton");
445
553
return -1;
446
554
}
448
556
fprintf(stderr, "Bad address: %s\n", ip);
449
557
return -1;
450
558
}
451
to.sin6_port = htons(port); /* Spurious warning */
559
to.in6.sin6_port = htons(port); /* Spurious warnings from
560
-Wconversion and
561
-Wunreachable-code */
452
562
453
to.sin6_scope_id = (uint32_t)if_index;
563
to.in6.sin6_scope_id = (uint32_t)if_index;
454
564
455
565
if(debug){
456
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
566
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
567
port);
457
568
char addrstr[INET6_ADDRSTRLEN] = "";
458
if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr,
569
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
459
570
sizeof(addrstr)) == NULL){
460
571
perror("inet_ntop");
461
572
} else {
465
576
}
466
577
}
467
578
468
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
469
if (ret < 0){
579
ret = connect(tcp_sd, &to.in, sizeof(to));
580
if(ret < 0){
470
581
perror("connect");
471
582
return -1;
472
583
}
473
584
474
585
const char *out = mandos_protocol_version;
475
586
written = 0;
476
while (true){
587
while(true){
477
588
size_t out_size = strlen(out);
478
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
589
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
479
590
out_size - written));
480
if (ret == -1){
591
if(ret == -1){
481
592
perror("write");
482
593
retval = -1;
483
594
goto mandos_end;
486
597
if(written < out_size){
487
598
continue;
488
599
} else {
489
if (out == mandos_protocol_version){
600
if(out == mandos_protocol_version){
490
601
written = 0;
491
602
out = "\r\n";
492
603
} else {
494
605
}
495
606
}
496
607
}
497
608
498
609
if(debug){
499
610
fprintf(stderr, "Establishing TLS session with %s\n", ip);
500
611
}
501
612
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){
613
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
614
615
do{
616
ret = gnutls_handshake(session);
617
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
618
619
if(ret != GNUTLS_E_SUCCESS){
507
620
if(debug){
508
621
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
509
gnutls_perror (ret);
622
gnutls_perror(ret);
510
623
}
511
624
retval = -1;
512
625
goto mandos_end;
518
631
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
519
632
ip);
520
633
}
521
634
522
635
while(true){
523
buffer_capacity = adjustbuffer(&buffer, buffer_length, buffer_capacity);
524
if (buffer_capacity == 0){
636
buffer_capacity = adjustbuffer(&buffer, buffer_length,
637
buffer_capacity);
638
if(buffer_capacity == 0){
525
639
perror("adjustbuffer");
526
640
retval = -1;
527
641
goto mandos_end;
528
642
}
529
643
530
ret = gnutls_record_recv(session, buffer+buffer_length,
531
BUFFER_SIZE);
532
if (ret == 0){
644
sret = gnutls_record_recv(session, buffer+buffer_length,
645
BUFFER_SIZE);
646
if(sret == 0){
533
647
break;
534
648
}
535
if (ret < 0){
536
switch(ret){
649
if(sret < 0){
650
switch(sret){
537
651
case GNUTLS_E_INTERRUPTED:
538
652
case GNUTLS_E_AGAIN:
539
653
break;
540
654
case GNUTLS_E_REHANDSHAKE:
541
ret = gnutls_handshake (session);
542
if (ret < 0){
655
do{
656
ret = gnutls_handshake(session);
657
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
658
if(ret < 0){
543
659
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
544
gnutls_perror (ret);
660
gnutls_perror(ret);
545
661
retval = -1;
546
662
goto mandos_end;
547
663
}
550
666
fprintf(stderr, "Unknown error while reading data from"
551
667
" encrypted session with Mandos server\n");
552
668
retval = -1;
553
gnutls_bye (session, GNUTLS_SHUT_RDWR);
669
gnutls_bye(session, GNUTLS_SHUT_RDWR);
554
670
goto mandos_end;
555
671
}
556
672
} else {
557
buffer_length += (size_t) ret;
673
buffer_length += (size_t) sret;
558
674
}
559
675
}
560
676
562
678
fprintf(stderr, "Closing TLS session\n");
563
679
}
564
680
565
gnutls_bye (session, GNUTLS_SHUT_RDWR);
681
gnutls_bye(session, GNUTLS_SHUT_RDWR);
566
682
567
if (buffer_length > 0){
568
decrypted_buffer_size = pgp_packet_decrypt(buffer,
683
if(buffer_length > 0){
684
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
569
685
buffer_length,
570
&decrypted_buffer,
571
keydir);
572
if (decrypted_buffer_size >= 0){
686
&decrypted_buffer);
687
if(decrypted_buffer_size >= 0){
573
688
written = 0;
574
689
while(written < (size_t) decrypted_buffer_size){
575
ret = (int)fwrite (decrypted_buffer + written, 1,
576
(size_t)decrypted_buffer_size - written,
577
stdout);
690
ret = (int)fwrite(decrypted_buffer + written, 1,
691
(size_t)decrypted_buffer_size - written,
692
stdout);
578
693
if(ret == 0 and ferror(stdout)){
579
694
if(debug){
580
695
fprintf(stderr, "Error writing encrypted data: %s\n",
589
704
} else {
590
705
retval = -1;
591
706
}
707
} else {
708
retval = -1;
592
709
}
593
710
594
711
/* Shutdown procedure */
595
712
596
713
mandos_end:
597
714
free(buffer);
598
close(tcp_sd);
599
gnutls_deinit (session);
600
gnutls_certificate_free_credentials (mc->cred);
601
gnutls_global_deinit ();
715
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
716
if(ret == -1){
717
perror("close");
718
}
719
gnutls_deinit(session);
602
720
return retval;
603
721
}
604
722
617
735
flags,
618
736
void* userdata) {
619
737
mandos_context *mc = userdata;
620
assert(r); /* Spurious warning */
738
assert(r);
621
739
622
740
/* Called whenever a service has been resolved successfully or
623
741
timed out */
624
742
625
switch (event) {
743
switch(event) {
626
744
default:
627
745
case AVAHI_RESOLVER_FAILURE:
628
746
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
635
753
char ip[AVAHI_ADDRESS_STR_MAX];
636
754
avahi_address_snprint(ip, sizeof(ip), address);
637
755
if(debug){
638
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
639
" port %d\n", name, host_name, ip, interface, port);
756
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
757
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
758
ip, (intmax_t)interface, port);
640
759
}
641
760
int ret = start_mandos_communication(ip, port, interface, mc);
642
if (ret == 0){
643
exit(EXIT_SUCCESS);
761
if(ret == 0){
762
avahi_simple_poll_quit(mc->simple_poll);
644
763
}
645
764
}
646
765
}
658
777
flags,
659
778
void* userdata) {
660
779
mandos_context *mc = userdata;
661
assert(b); /* Spurious warning */
780
assert(b);
662
781
663
782
/* Called whenever a new services becomes available on the LAN or
664
783
is removed from the LAN */
665
784
666
switch (event) {
785
switch(event) {
667
786
default:
668
787
case AVAHI_BROWSER_FAILURE:
669
788
678
797
the callback function is called the Avahi server will free the
679
798
resolver for us. */
680
799
681
if (!(avahi_s_service_resolver_new(mc->server, interface,
800
if(!(avahi_s_service_resolver_new(mc->server, interface,
682
801
protocol, name, type, domain,
683
802
AVAHI_PROTO_INET6, 0,
684
803
resolve_callback, mc)))
698
817
}
699
818
}
700
819
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
820
int main(int argc, char *argv[]){
723
821
AvahiSServiceBrowser *sb = NULL;
724
822
int error;
725
823
int ret;
824
intmax_t tmpmax;
825
int numchars;
726
826
int exitcode = EXIT_SUCCESS;
727
827
const char *interface = "eth0";
728
828
struct ifreq network;
730
830
uid_t uid;
731
831
gid_t gid;
732
832
char *connect_to = NULL;
833
char tempdir[] = "/tmp/mandosXXXXXX";
733
834
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
835
const char *seckey = PATHDIR "/" SECKEY;
836
const char *pubkey = PATHDIR "/" PUBKEY;
837
734
838
mandos_context mc = { .simple_poll = NULL, .server = NULL,
735
.dh_bits = 1024, .priority = "SECURE256"};
839
.dh_bits = 1024, .priority = "SECURE256"
840
":!CTYPE-X.509:+CTYPE-OPENPGP" };
841
bool gnutls_initalized = false;
842
bool gpgme_initalized = false;
736
843
737
844
{
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");
845
struct argp_option options[] = {
846
{ .name = "debug", .key = 128,
847
.doc = "Debug mode", .group = 3 },
848
{ .name = "connect", .key = 'c',
849
.arg = "ADDRESS:PORT",
850
.doc = "Connect directly to a specific Mandos server",
851
.group = 1 },
852
{ .name = "interface", .key = 'i',
853
.arg = "NAME",
854
.doc = "Interface that will be used to search for Mandos"
855
" servers",
856
.group = 1 },
857
{ .name = "seckey", .key = 's',
858
.arg = "FILE",
859
.doc = "OpenPGP secret key file base name",
860
.group = 1 },
861
{ .name = "pubkey", .key = 'p',
862
.arg = "FILE",
863
.doc = "OpenPGP public key file base name",
864
.group = 2 },
865
{ .name = "dh-bits", .key = 129,
866
.arg = "BITS",
867
.doc = "Bit length of the prime number used in the"
868
" Diffie-Hellman key exchange",
869
.group = 2 },
870
{ .name = "priority", .key = 130,
871
.arg = "STRING",
872
.doc = "GnuTLS priority string for the TLS handshake",
873
.group = 1 },
874
{ .name = NULL }
875
};
876
877
error_t parse_opt(int key, char *arg,
878
struct argp_state *state) {
879
switch(key) {
880
case 128: /* --debug */
881
debug = true;
882
break;
883
case 'c': /* --connect */
884
connect_to = arg;
885
break;
886
case 'i': /* --interface */
887
interface = arg;
888
break;
889
case 's': /* --seckey */
890
seckey = arg;
891
break;
892
case 'p': /* --pubkey */
893
pubkey = arg;
894
break;
895
case 129: /* --dh-bits */
896
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
897
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
898
or arg[numchars] != '\0'){
899
fprintf(stderr, "Bad number of DH bits\n");
783
900
exit(EXIT_FAILURE);
784
901
}
785
break;
786
case 'P':
787
mc.priority = optarg;
788
break;
789
case '?':
902
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
903
break;
904
case 130: /* --priority */
905
mc.priority = arg;
906
break;
907
case ARGP_KEY_ARG:
908
argp_usage(state);
909
case ARGP_KEY_END:
910
break;
790
911
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
912
return ARGP_ERR_UNKNOWN;
913
}
914
return 0;
915
}
916
917
struct argp argp = { .options = options, .parser = parse_opt,
918
.args_doc = "",
919
.doc = "Mandos client -- Get and decrypt"
920
" passwords from a Mandos server" };
921
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
922
if(ret == ARGP_ERR_UNKNOWN){
923
fprintf(stderr, "Unknown error while parsing arguments\n");
924
exitcode = EXIT_FAILURE;
925
goto end;
926
}
927
}
928
929
/* If the interface is down, bring it up */
930
{
931
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
932
if(sd < 0) {
933
perror("socket");
934
exitcode = EXIT_FAILURE;
935
goto end;
936
}
937
strcpy(network.ifr_name, interface);
938
ret = ioctl(sd, SIOCGIFFLAGS, &network);
939
if(ret == -1){
940
perror("ioctl SIOCGIFFLAGS");
941
exitcode = EXIT_FAILURE;
942
goto end;
943
}
944
if((network.ifr_flags & IFF_UP) == 0){
945
network.ifr_flags |= IFF_UP;
946
ret = ioctl(sd, SIOCSIFFLAGS, &network);
947
if(ret == -1){
948
perror("ioctl SIOCSIFFLAGS");
949
exitcode = EXIT_FAILURE;
950
goto end;
951
}
952
}
953
ret = (int)TEMP_FAILURE_RETRY(close(sd));
954
if(ret == -1){
955
perror("close");
956
}
957
}
958
819
959
uid = getuid();
820
960
gid = getgid();
821
961
822
962
ret = setuid(uid);
823
if (ret == -1){
963
if(ret == -1){
824
964
perror("setuid");
825
965
}
826
966
827
967
setgid(gid);
828
if (ret == -1){
968
if(ret == -1){
829
969
perror("setgid");
830
970
}
831
971
972
ret = init_gnutls_global(&mc, pubkey, seckey);
973
if(ret == -1){
974
fprintf(stderr, "init_gnutls_global failed\n");
975
exitcode = EXIT_FAILURE;
976
goto end;
977
} else {
978
gnutls_initalized = true;
979
}
980
981
if(mkdtemp(tempdir) == NULL){
982
perror("mkdtemp");
983
tempdir[0] = '\0';
984
goto end;
985
}
986
987
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
988
fprintf(stderr, "gpgme_initalized failed\n");
989
exitcode = EXIT_FAILURE;
990
goto end;
991
} else {
992
gpgme_initalized = true;
993
}
994
832
995
if_index = (AvahiIfIndex) if_nametoindex(interface);
833
996
if(if_index == 0){
834
997
fprintf(stderr, "No such interface: \"%s\"\n", interface);
844
1007
exitcode = EXIT_FAILURE;
845
1008
goto end;
846
1009
}
847
errno = 0;
848
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
849
if(errno){
850
perror("Bad port number");
1010
uint16_t port;
1011
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1012
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1013
or address[numchars+1] != '\0'){
1014
fprintf(stderr, "Bad port number\n");
851
1015
exitcode = EXIT_FAILURE;
852
1016
goto end;
853
1017
}
1018
port = (uint16_t)tmpmax;
854
1019
*address = '\0';
855
1020
address = connect_to;
856
1021
ret = start_mandos_communication(address, port, if_index, &mc);
862
1027
goto end;
863
1028
}
864
1029
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){
1030
if(not debug){
893
1031
avahi_set_log_function(empty_log);
894
1032
}
895
1033
898
1036
899
1037
/* Allocate main Avahi loop object */
900
1038
mc.simple_poll = avahi_simple_poll_new();
901
if (mc.simple_poll == NULL) {
1039
if(mc.simple_poll == NULL) {
902
1040
fprintf(stderr, "Avahi: Failed to create simple poll"
903
1041
" object.\n");
904
1042
exitcode = EXIT_FAILURE;
905
1043
goto end;
906
1044
}
907
1045
908
1046
{
909
1047
AvahiServerConfig config;
910
1048
/* Do not publish any local Zeroconf records */
913
1051
config.publish_addresses = 0;
914
1052
config.publish_workstation = 0;
915
1053
config.publish_domain = 0;
916
1054
917
1055
/* Allocate a new server */
918
1056
mc.server = avahi_server_new(avahi_simple_poll_get
919
1057
(mc.simple_poll), &config, NULL,
920
1058
NULL, &error);
921
1059
922
1060
/* Free the Avahi configuration data */
923
1061
avahi_server_config_free(&config);
924
1062
}
925
1063
926
1064
/* Check if creating the Avahi server object succeeded */
927
if (mc.server == NULL) {
1065
if(mc.server == NULL) {
928
1066
fprintf(stderr, "Failed to create Avahi server: %s\n",
929
1067
avahi_strerror(error));
930
1068
exitcode = EXIT_FAILURE;
936
1074
AVAHI_PROTO_INET6,
937
1075
"_mandos._tcp", NULL, 0,
938
1076
browse_callback, &mc);
939
if (sb == NULL) {
1077
if(sb == NULL) {
940
1078
fprintf(stderr, "Failed to create service browser: %s\n",
941
1079
avahi_strerror(avahi_server_errno(mc.server)));
942
1080
exitcode = EXIT_FAILURE;
944
1082
}
945
1083
946
1084
/* Run the main loop */
947
948
if (debug){
1085
1086
if(debug){
949
1087
fprintf(stderr, "Starting Avahi loop search\n");
950
1088
}
951
1089
952
1090
avahi_simple_poll_loop(mc.simple_poll);
953
1091
954
1092
end:
955
956
if (debug){
1093
1094
if(debug){
957
1095
fprintf(stderr, "%s exiting\n", argv[0]);
958
1096
}
959
1097
960
1098
/* Cleanup things */
961
if (sb != NULL)
1099
if(sb != NULL)
962
1100
avahi_s_service_browser_free(sb);
963
1101
964
if (mc.server != NULL)
1102
if(mc.server != NULL)
965
1103
avahi_server_free(mc.server);
966
967
if (mc.simple_poll != NULL)
1104
1105
if(mc.simple_poll != NULL)
968
1106
avahi_simple_poll_free(mc.simple_poll);
969
free(pubkeyfile);
970
free(seckeyfile);
971
1107
1108
if(gnutls_initalized){
1109
gnutls_certificate_free_credentials(mc.cred);
1110
gnutls_global_deinit();
1111
gnutls_dh_params_deinit(mc.dh_params);
1112
}
1113
1114
if(gpgme_initalized){
1115
gpgme_release(mc.ctx);
1116
}
1117
1118
/* Removes the temp directory used by GPGME */
1119
if(tempdir[0] != '\0'){
1120
DIR *d;
1121
struct dirent *direntry;
1122
d = opendir(tempdir);
1123
if(d == NULL){
1124
if(errno != ENOENT){
1125
perror("opendir");
1126
}
1127
} else {
1128
while(true){
1129
direntry = readdir(d);
1130
if(direntry == NULL){
1131
break;
1132
}
1133
if(direntry->d_type == DT_REG){
1134
char *fullname = NULL;
1135
ret = asprintf(&fullname, "%s/%s", tempdir,
1136
direntry->d_name);
1137
if(ret < 0){
1138
perror("asprintf");
1139
continue;
1140
}
1141
ret = unlink(fullname);
1142
if(ret == -1){
1143
fprintf(stderr, "unlink(\"%s\"): %s",
1144
fullname, strerror(errno));
1145
}
1146
free(fullname);
1147
}
1148
}
1149
closedir(d);
1150
}
1151
ret = rmdir(tempdir);
1152
if(ret == -1 and errno != ENOENT){
1153
perror("rmdir");
1154
}
1155
}
1156
972
1157
return exitcode;
973
1158
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0