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- Committer: Teddy Hogeborn
- Date: 2009-01-13 04:35:19 UTC
- Revision ID: teddy@fukt.bsnet.se-20090113043519-0yr39snphoegq8l1
* plugin-runner.c: Only space changes.
* plugins.d/mandos-client.c: - '' -
* plugins.d/password-prompt.c: - '' -
* plugins.d/mandos-client.c: - '' -
* plugins.d/password-prompt.c: - '' -
- 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, SCNu16 */
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;
90
121
gnutls_certificate_credentials_t cred;
91
122
unsigned int dh_bits;
123
gnutls_dh_params_t dh_params;
92
124
const char *priority;
125
gpgme_ctx_t ctx;
93
126
} mandos_context;
94
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
*/
95
133
size_t adjustbuffer(char **buffer, size_t buffer_length,
96
134
size_t buffer_capacity){
97
if (buffer_length + BUFFER_SIZE > buffer_capacity){
135
if(buffer_length + BUFFER_SIZE > buffer_capacity){
98
136
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
99
if (buffer == NULL){
137
if(buffer == NULL){
100
138
return 0;
101
139
}
102
140
buffer_capacity += BUFFER_SIZE;
105
143
}
106
144
107
145
/*
108
* Decrypt OpenPGP data using keyrings in HOMEDIR.
109
* Returns -1 on error
146
* Initialize GPGME.
110
147
*/
111
static ssize_t pgp_packet_decrypt (const char *cryptotext,
112
size_t crypto_size,
113
char **plaintext,
114
const char *homedir){
115
gpgme_data_t dh_crypto, dh_plain;
116
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;
117
151
gpgme_error_t rc;
118
ssize_t ret;
119
size_t plaintext_capacity = 0;
120
ssize_t plaintext_length = 0;
121
152
gpgme_engine_info_t engine_info;
122
153
123
if (debug){
124
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");
125
192
}
126
193
127
194
/* Init GPGME */
128
195
gpgme_check_version(NULL);
129
196
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
130
if (rc != GPG_ERR_NO_ERROR){
197
if(rc != GPG_ERR_NO_ERROR){
131
198
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
132
199
gpgme_strsource(rc), gpgme_strerror(rc));
133
return -1;
200
return false;
134
201
}
135
202
136
/* Set GPGME home directory for the OpenPGP engine only */
137
rc = gpgme_get_engine_info (&engine_info);
138
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){
139
206
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
140
207
gpgme_strsource(rc), gpgme_strerror(rc));
141
return -1;
208
return false;
142
209
}
143
210
while(engine_info != NULL){
144
211
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
145
212
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
146
engine_info->file_name, homedir);
213
engine_info->file_name, tempdir);
147
214
break;
148
215
}
149
216
engine_info = engine_info->next;
150
217
}
151
218
if(engine_info == NULL){
152
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
153
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");
154
254
}
155
255
156
256
/* Create new GPGME data buffer from memory cryptotext */
157
257
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
158
258
0);
159
if (rc != GPG_ERR_NO_ERROR){
259
if(rc != GPG_ERR_NO_ERROR){
160
260
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
161
261
gpgme_strsource(rc), gpgme_strerror(rc));
162
262
return -1;
164
264
165
265
/* Create new empty GPGME data buffer for the plaintext */
166
266
rc = gpgme_data_new(&dh_plain);
167
if (rc != GPG_ERR_NO_ERROR){
267
if(rc != GPG_ERR_NO_ERROR){
168
268
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
169
269
gpgme_strsource(rc), gpgme_strerror(rc));
170
270
gpgme_data_release(dh_crypto);
171
271
return -1;
172
272
}
173
273
174
/* Create new GPGME "context" */
175
rc = gpgme_new(&ctx);
176
if (rc != GPG_ERR_NO_ERROR){
177
fprintf(stderr, "bad gpgme_new: %s: %s\n",
178
gpgme_strsource(rc), gpgme_strerror(rc));
179
plaintext_length = -1;
180
goto decrypt_end;
181
}
182
183
274
/* Decrypt data from the cryptotext data buffer to the plaintext
184
275
data buffer */
185
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
186
if (rc != GPG_ERR_NO_ERROR){
276
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
277
if(rc != GPG_ERR_NO_ERROR){
187
278
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
188
279
gpgme_strsource(rc), gpgme_strerror(rc));
189
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
}
190
309
goto decrypt_end;
191
310
}
192
311
194
313
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
195
314
}
196
315
197
if (debug){
198
gpgme_decrypt_result_t result;
199
result = gpgme_op_decrypt_result(ctx);
200
if (result == NULL){
201
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
202
} else {
203
fprintf(stderr, "Unsupported algorithm: %s\n",
204
result->unsupported_algorithm);
205
fprintf(stderr, "Wrong key usage: %d\n",
206
result->wrong_key_usage);
207
if(result->file_name != NULL){
208
fprintf(stderr, "File name: %s\n", result->file_name);
209
}
210
gpgme_recipient_t recipient;
211
recipient = result->recipients;
212
if(recipient){
213
while(recipient != NULL){
214
fprintf(stderr, "Public key algorithm: %s\n",
215
gpgme_pubkey_algo_name(recipient->pubkey_algo));
216
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
217
fprintf(stderr, "Secret key available: %s\n",
218
recipient->status == GPG_ERR_NO_SECKEY
219
? "No" : "Yes");
220
recipient = recipient->next;
221
}
222
}
223
}
224
}
225
226
316
/* Seek back to the beginning of the GPGME plaintext data buffer */
227
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
228
perror("pgpme_data_seek");
317
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
318
perror("gpgme_data_seek");
229
319
plaintext_length = -1;
230
320
goto decrypt_end;
231
321
}
232
322
233
323
*plaintext = NULL;
234
324
while(true){
235
plaintext_capacity = adjustbuffer(plaintext, (size_t)plaintext_length,
325
plaintext_capacity = adjustbuffer(plaintext,
326
(size_t)plaintext_length,
236
327
plaintext_capacity);
237
if (plaintext_capacity == 0){
328
if(plaintext_capacity == 0){
238
329
perror("adjustbuffer");
239
330
plaintext_length = -1;
240
331
goto decrypt_end;
243
334
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
244
335
BUFFER_SIZE);
245
336
/* Print the data, if any */
246
if (ret == 0){
337
if(ret == 0){
247
338
/* EOF */
248
339
break;
249
340
}
254
345
}
255
346
plaintext_length += ret;
256
347
}
257
348
258
349
if(debug){
259
350
fprintf(stderr, "Decrypted password is: ");
260
351
for(ssize_t i = 0; i < plaintext_length; i++){
273
364
return plaintext_length;
274
365
}
275
366
276
static const char * safer_gnutls_strerror (int value) {
277
const char *ret = gnutls_strerror (value);
278
if (ret == NULL)
367
static const char * safer_gnutls_strerror(int value) {
368
const char *ret = gnutls_strerror(value); /* Spurious warning */
369
if(ret == NULL)
279
370
ret = "(unknown)";
280
371
return ret;
281
372
}
286
377
fprintf(stderr, "GnuTLS: %s", string);
287
378
}
288
379
289
static int initgnutls(mandos_context *mc, gnutls_session_t *session,
290
gnutls_dh_params_t *dh_params){
380
static int init_gnutls_global(mandos_context *mc,
381
const char *pubkeyfilename,
382
const char *seckeyfilename){
291
383
int ret;
292
384
293
385
if(debug){
294
386
fprintf(stderr, "Initializing GnuTLS\n");
295
387
}
296
297
if ((ret = gnutls_global_init ())
298
!= GNUTLS_E_SUCCESS) {
299
fprintf (stderr, "GnuTLS global_init: %s\n",
300
safer_gnutls_strerror(ret));
388
389
ret = gnutls_global_init();
390
if(ret != GNUTLS_E_SUCCESS) {
391
fprintf(stderr, "GnuTLS global_init: %s\n",
392
safer_gnutls_strerror(ret));
301
393
return -1;
302
394
}
303
395
304
if (debug){
396
if(debug){
305
397
/* "Use a log level over 10 to enable all debugging options."
306
398
* - GnuTLS manual
307
399
*/
310
402
}
311
403
312
404
/* 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));
405
gnutls_certificate_allocate_credentials(&mc->cred);
406
if(ret != GNUTLS_E_SUCCESS){
407
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious
408
warning */
409
safer_gnutls_strerror(ret));
410
gnutls_global_deinit();
317
411
return -1;
318
412
}
319
413
320
414
if(debug){
321
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
322
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
323
seckeyfile);
415
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
416
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
417
seckeyfilename);
324
418
}
325
419
326
420
ret = gnutls_certificate_set_openpgp_key_file
327
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
328
if (ret != GNUTLS_E_SUCCESS) {
421
(mc->cred, pubkeyfilename, seckeyfilename,
422
GNUTLS_OPENPGP_FMT_BASE64);
423
if(ret != GNUTLS_E_SUCCESS) {
329
424
fprintf(stderr,
330
425
"Error[%d] while reading the OpenPGP key pair ('%s',"
331
" '%s')\n", ret, pubkeyfile, seckeyfile);
332
fprintf(stdout, "The GnuTLS error is: %s\n",
426
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
427
fprintf(stderr, "The GnuTLS error is: %s\n",
333
428
safer_gnutls_strerror(ret));
334
return -1;
429
goto globalfail;
335
430
}
336
431
337
432
/* GnuTLS server initialization */
338
ret = gnutls_dh_params_init(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;
343
}
344
ret = gnutls_dh_params_generate2(*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;
349
}
350
351
gnutls_certificate_set_dh_params(mc->cred, *dh_params);
352
433
ret = gnutls_dh_params_init(&mc->dh_params);
434
if(ret != GNUTLS_E_SUCCESS) {
435
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
436
" %s\n", safer_gnutls_strerror(ret));
437
goto globalfail;
438
}
439
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
440
if(ret != GNUTLS_E_SUCCESS) {
441
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
442
safer_gnutls_strerror(ret));
443
goto globalfail;
444
}
445
446
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
447
448
return 0;
449
450
globalfail:
451
452
gnutls_certificate_free_credentials(mc->cred);
453
gnutls_global_deinit();
454
gnutls_dh_params_deinit(mc->dh_params);
455
return -1;
456
}
457
458
static int init_gnutls_session(mandos_context *mc,
459
gnutls_session_t *session){
460
int ret;
353
461
/* GnuTLS session creation */
354
462
ret = gnutls_init(session, GNUTLS_SERVER);
355
if (ret != GNUTLS_E_SUCCESS){
463
if(ret != GNUTLS_E_SUCCESS){
356
464
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
357
465
safer_gnutls_strerror(ret));
358
466
}
360
468
{
361
469
const char *err;
362
470
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
363
if (ret != GNUTLS_E_SUCCESS) {
471
if(ret != GNUTLS_E_SUCCESS) {
364
472
fprintf(stderr, "Syntax error at: %s\n", err);
365
473
fprintf(stderr, "GnuTLS error: %s\n",
366
474
safer_gnutls_strerror(ret));
475
gnutls_deinit(*session);
367
476
return -1;
368
477
}
369
478
}
370
479
371
480
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
372
481
mc->cred);
373
if (ret != GNUTLS_E_SUCCESS) {
482
if(ret != GNUTLS_E_SUCCESS) {
374
483
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
375
484
safer_gnutls_strerror(ret));
485
gnutls_deinit(*session);
376
486
return -1;
377
487
}
378
488
379
489
/* ignore client certificate if any. */
380
gnutls_certificate_server_set_request (*session,
381
GNUTLS_CERT_IGNORE);
490
gnutls_certificate_server_set_request(*session,
491
GNUTLS_CERT_IGNORE);
382
492
383
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
493
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
384
494
385
495
return 0;
386
496
}
394
504
AvahiIfIndex if_index,
395
505
mandos_context *mc){
396
506
int ret, tcp_sd;
397
struct sockaddr_in6 to;
507
ssize_t sret;
508
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
398
509
char *buffer = NULL;
399
510
char *decrypted_buffer;
400
511
size_t buffer_length = 0;
404
515
int retval = 0;
405
516
char interface[IF_NAMESIZE];
406
517
gnutls_session_t session;
407
gnutls_dh_params_t dh_params;
408
518
409
ret = initgnutls (mc, &session, &dh_params);
410
if (ret != 0){
519
ret = init_gnutls_session(mc, &session);
520
if(ret != 0){
411
521
return -1;
412
522
}
413
523
414
524
if(debug){
415
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
416
ip, port);
525
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
526
"\n", ip, port);
417
527
}
418
528
419
529
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
421
531
perror("socket");
422
532
return -1;
423
533
}
424
534
425
535
if(debug){
426
536
if(if_indextoname((unsigned int)if_index, interface) == NULL){
427
537
perror("if_indextoname");
430
540
fprintf(stderr, "Binding to interface %s\n", interface);
431
541
}
432
542
433
memset(&to,0,sizeof(to)); /* Spurious warning */
434
to.sin6_family = AF_INET6;
543
memset(&to, 0, sizeof(to));
544
to.in6.sin6_family = AF_INET6;
435
545
/* It would be nice to have a way to detect if we were passed an
436
546
IPv4 address here. Now we assume an IPv6 address. */
437
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
438
if (ret < 0 ){
547
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
548
if(ret < 0 ){
439
549
perror("inet_pton");
440
550
return -1;
441
551
}
443
553
fprintf(stderr, "Bad address: %s\n", ip);
444
554
return -1;
445
555
}
446
to.sin6_port = htons(port); /* Spurious warning */
556
to.in6.sin6_port = htons(port); /* Spurious warning */
447
557
448
to.sin6_scope_id = (uint32_t)if_index;
558
to.in6.sin6_scope_id = (uint32_t)if_index;
449
559
450
560
if(debug){
451
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
561
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
562
port);
452
563
char addrstr[INET6_ADDRSTRLEN] = "";
453
if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr,
564
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
454
565
sizeof(addrstr)) == NULL){
455
566
perror("inet_ntop");
456
567
} else {
460
571
}
461
572
}
462
573
463
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
464
if (ret < 0){
574
ret = connect(tcp_sd, &to.in, sizeof(to));
575
if(ret < 0){
465
576
perror("connect");
466
577
return -1;
467
578
}
468
579
469
580
const char *out = mandos_protocol_version;
470
581
written = 0;
471
while (true){
582
while(true){
472
583
size_t out_size = strlen(out);
473
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
584
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
474
585
out_size - written));
475
if (ret == -1){
586
if(ret == -1){
476
587
perror("write");
477
588
retval = -1;
478
589
goto mandos_end;
481
592
if(written < out_size){
482
593
continue;
483
594
} else {
484
if (out == mandos_protocol_version){
595
if(out == mandos_protocol_version){
485
596
written = 0;
486
597
out = "\r\n";
487
598
} else {
489
600
}
490
601
}
491
602
}
492
603
493
604
if(debug){
494
605
fprintf(stderr, "Establishing TLS session with %s\n", ip);
495
606
}
496
607
497
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
498
499
ret = gnutls_handshake (session);
500
501
if (ret != GNUTLS_E_SUCCESS){
608
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
609
610
do{
611
ret = gnutls_handshake(session);
612
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
613
614
if(ret != GNUTLS_E_SUCCESS){
502
615
if(debug){
503
616
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
504
gnutls_perror (ret);
617
gnutls_perror(ret);
505
618
}
506
619
retval = -1;
507
620
goto mandos_end;
513
626
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
514
627
ip);
515
628
}
516
629
517
630
while(true){
518
buffer_capacity = adjustbuffer(&buffer, buffer_length, buffer_capacity);
519
if (buffer_capacity == 0){
631
buffer_capacity = adjustbuffer(&buffer, buffer_length,
632
buffer_capacity);
633
if(buffer_capacity == 0){
520
634
perror("adjustbuffer");
521
635
retval = -1;
522
636
goto mandos_end;
523
637
}
524
638
525
ret = gnutls_record_recv(session, buffer+buffer_length,
526
BUFFER_SIZE);
527
if (ret == 0){
639
sret = gnutls_record_recv(session, buffer+buffer_length,
640
BUFFER_SIZE);
641
if(sret == 0){
528
642
break;
529
643
}
530
if (ret < 0){
531
switch(ret){
644
if(sret < 0){
645
switch(sret){
532
646
case GNUTLS_E_INTERRUPTED:
533
647
case GNUTLS_E_AGAIN:
534
648
break;
535
649
case GNUTLS_E_REHANDSHAKE:
536
ret = gnutls_handshake (session);
537
if (ret < 0){
650
do{
651
ret = gnutls_handshake(session);
652
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
653
if(ret < 0){
538
654
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
539
gnutls_perror (ret);
655
gnutls_perror(ret);
540
656
retval = -1;
541
657
goto mandos_end;
542
658
}
545
661
fprintf(stderr, "Unknown error while reading data from"
546
662
" encrypted session with Mandos server\n");
547
663
retval = -1;
548
gnutls_bye (session, GNUTLS_SHUT_RDWR);
664
gnutls_bye(session, GNUTLS_SHUT_RDWR);
549
665
goto mandos_end;
550
666
}
551
667
} else {
552
buffer_length += (size_t) ret;
668
buffer_length += (size_t) sret;
553
669
}
554
670
}
555
671
557
673
fprintf(stderr, "Closing TLS session\n");
558
674
}
559
675
560
gnutls_bye (session, GNUTLS_SHUT_RDWR);
676
gnutls_bye(session, GNUTLS_SHUT_RDWR);
561
677
562
if (buffer_length > 0){
563
decrypted_buffer_size = pgp_packet_decrypt(buffer,
678
if(buffer_length > 0){
679
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
564
680
buffer_length,
565
&decrypted_buffer,
566
keydir);
567
if (decrypted_buffer_size >= 0){
681
&decrypted_buffer);
682
if(decrypted_buffer_size >= 0){
568
683
written = 0;
569
684
while(written < (size_t) decrypted_buffer_size){
570
ret = (int)fwrite (decrypted_buffer + written, 1,
571
(size_t)decrypted_buffer_size - written,
572
stdout);
685
ret = (int)fwrite(decrypted_buffer + written, 1,
686
(size_t)decrypted_buffer_size - written,
687
stdout);
573
688
if(ret == 0 and ferror(stdout)){
574
689
if(debug){
575
690
fprintf(stderr, "Error writing encrypted data: %s\n",
584
699
} else {
585
700
retval = -1;
586
701
}
702
} else {
703
retval = -1;
587
704
}
588
705
589
706
/* Shutdown procedure */
590
707
591
708
mandos_end:
592
709
free(buffer);
593
close(tcp_sd);
594
gnutls_deinit (session);
595
gnutls_certificate_free_credentials (mc->cred);
596
gnutls_global_deinit ();
710
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
711
if(ret == -1){
712
perror("close");
713
}
714
gnutls_deinit(session);
597
715
return retval;
598
716
}
599
717
612
730
flags,
613
731
void* userdata) {
614
732
mandos_context *mc = userdata;
615
assert(r); /* Spurious warning */
733
assert(r);
616
734
617
735
/* Called whenever a service has been resolved successfully or
618
736
timed out */
619
737
620
switch (event) {
738
switch(event) {
621
739
default:
622
740
case AVAHI_RESOLVER_FAILURE:
623
741
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
630
748
char ip[AVAHI_ADDRESS_STR_MAX];
631
749
avahi_address_snprint(ip, sizeof(ip), address);
632
750
if(debug){
633
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
634
" port %d\n", name, host_name, ip, interface, port);
751
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
752
PRIu16 ") on port %d\n", name, host_name, ip,
753
interface, port);
635
754
}
636
755
int ret = start_mandos_communication(ip, port, interface, mc);
637
if (ret == 0){
638
exit(EXIT_SUCCESS);
756
if(ret == 0){
757
avahi_simple_poll_quit(mc->simple_poll);
639
758
}
640
759
}
641
760
}
653
772
flags,
654
773
void* userdata) {
655
774
mandos_context *mc = userdata;
656
assert(b); /* Spurious warning */
775
assert(b);
657
776
658
777
/* Called whenever a new services becomes available on the LAN or
659
778
is removed from the LAN */
660
779
661
switch (event) {
780
switch(event) {
662
781
default:
663
782
case AVAHI_BROWSER_FAILURE:
664
783
673
792
the callback function is called the Avahi server will free the
674
793
resolver for us. */
675
794
676
if (!(avahi_s_service_resolver_new(mc->server, interface,
795
if(!(avahi_s_service_resolver_new(mc->server, interface,
677
796
protocol, name, type, domain,
678
797
AVAHI_PROTO_INET6, 0,
679
798
resolve_callback, mc)))
693
812
}
694
813
}
695
814
696
/* Combines file name and path and returns the malloced new
697
string. some sane checks could/should be added */
698
static const char *combinepath(const char *first, const char *second){
699
size_t f_len = strlen(first);
700
size_t s_len = strlen(second);
701
char *tmp = malloc(f_len + s_len + 2);
702
if (tmp == NULL){
703
return NULL;
704
}
705
if(f_len > 0){
706
memcpy(tmp, first, f_len); /* Spurious warning */
707
}
708
tmp[f_len] = '/';
709
if(s_len > 0){
710
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
711
}
712
tmp[f_len + 1 + s_len] = '\0';
713
return tmp;
714
}
715
716
717
815
int main(int argc, char *argv[]){
718
816
AvahiSServiceBrowser *sb = NULL;
719
817
int error;
722
820
const char *interface = "eth0";
723
821
struct ifreq network;
724
822
int sd;
823
uid_t uid;
824
gid_t gid;
725
825
char *connect_to = NULL;
826
char tempdir[] = "/tmp/mandosXXXXXX";
726
827
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
828
const char *seckey = PATHDIR "/" SECKEY;
829
const char *pubkey = PATHDIR "/" PUBKEY;
830
727
831
mandos_context mc = { .simple_poll = NULL, .server = NULL,
728
.dh_bits = 1024, .priority = "SECURE256"};
832
.dh_bits = 1024, .priority = "SECURE256"
833
":!CTYPE-X.509:+CTYPE-OPENPGP" };
834
bool gnutls_initalized = false;
835
bool gpgme_initalized = false;
729
836
730
837
{
731
/* Temporary int to get the address of for getopt_long */
732
int debug_int = debug ? 1 : 0;
733
while (true){
734
struct option long_options[] = {
735
{"debug", no_argument, &debug_int, 1},
736
{"connect", required_argument, NULL, 'c'},
737
{"interface", required_argument, NULL, 'i'},
738
{"keydir", required_argument, NULL, 'd'},
739
{"seckey", required_argument, NULL, 's'},
740
{"pubkey", required_argument, NULL, 'p'},
741
{"dh-bits", required_argument, NULL, 'D'},
742
{"priority", required_argument, NULL, 'P'},
743
{0, 0, 0, 0} };
744
745
int option_index = 0;
746
ret = getopt_long (argc, argv, "i:", long_options,
747
&option_index);
748
749
if (ret == -1){
750
break;
751
}
752
753
switch(ret){
754
case 0:
755
break;
756
case 'i':
757
interface = optarg;
758
break;
759
case 'c':
760
connect_to = optarg;
761
break;
762
case 'd':
763
keydir = optarg;
764
break;
765
case 'p':
766
pubkeyfile = optarg;
767
break;
768
case 's':
769
seckeyfile = optarg;
770
break;
771
case 'D':
772
errno = 0;
773
mc.dh_bits = (unsigned int) strtol(optarg, NULL, 10);
774
if (errno){
775
perror("strtol");
838
struct argp_option options[] = {
839
{ .name = "debug", .key = 128,
840
.doc = "Debug mode", .group = 3 },
841
{ .name = "connect", .key = 'c',
842
.arg = "ADDRESS:PORT",
843
.doc = "Connect directly to a specific Mandos server",
844
.group = 1 },
845
{ .name = "interface", .key = 'i',
846
.arg = "NAME",
847
.doc = "Interface that will be used to search for Mandos"
848
" servers",
849
.group = 1 },
850
{ .name = "seckey", .key = 's',
851
.arg = "FILE",
852
.doc = "OpenPGP secret key file base name",
853
.group = 1 },
854
{ .name = "pubkey", .key = 'p',
855
.arg = "FILE",
856
.doc = "OpenPGP public key file base name",
857
.group = 2 },
858
{ .name = "dh-bits", .key = 129,
859
.arg = "BITS",
860
.doc = "Bit length of the prime number used in the"
861
" Diffie-Hellman key exchange",
862
.group = 2 },
863
{ .name = "priority", .key = 130,
864
.arg = "STRING",
865
.doc = "GnuTLS priority string for the TLS handshake",
866
.group = 1 },
867
{ .name = NULL }
868
};
869
870
error_t parse_opt(int key, char *arg,
871
struct argp_state *state) {
872
switch(key) {
873
case 128: /* --debug */
874
debug = true;
875
break;
876
case 'c': /* --connect */
877
connect_to = arg;
878
break;
879
case 'i': /* --interface */
880
interface = arg;
881
break;
882
case 's': /* --seckey */
883
seckey = arg;
884
break;
885
case 'p': /* --pubkey */
886
pubkey = arg;
887
break;
888
case 129: /* --dh-bits */
889
ret = sscanf(arg, "%u", &mc.dh_bits);
890
if(ret != 1){
891
fprintf(stderr, "Bad number of DH bits\n");
776
892
exit(EXIT_FAILURE);
777
893
}
778
894
break;
779
case 'P':
780
mc.priority = optarg;
781
break;
782
case '?':
895
case 130: /* --priority */
896
mc.priority = arg;
897
break;
898
case ARGP_KEY_ARG:
899
argp_usage(state);
900
case ARGP_KEY_END:
901
break;
783
902
default:
784
/* getopt_long() has already printed a message about the
785
unrcognized option, so just exit. */
786
exit(EXIT_FAILURE);
787
}
788
}
789
/* Set the global debug flag from the temporary int */
790
debug = debug_int ? true : false;
791
}
792
793
pubkeyfile = combinepath(keydir, pubkeyfile);
794
if (pubkeyfile == NULL){
795
perror("combinepath");
796
exitcode = EXIT_FAILURE;
797
goto end;
798
}
799
800
seckeyfile = combinepath(keydir, seckeyfile);
801
if (seckeyfile == NULL){
802
perror("combinepath");
803
goto end;
903
return ARGP_ERR_UNKNOWN;
904
}
905
return 0;
906
}
907
908
struct argp argp = { .options = options, .parser = parse_opt,
909
.args_doc = "",
910
.doc = "Mandos client -- Get and decrypt"
911
" passwords from a Mandos server" };
912
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
913
if(ret == ARGP_ERR_UNKNOWN){
914
fprintf(stderr, "Unknown error while parsing arguments\n");
915
exitcode = EXIT_FAILURE;
916
goto end;
917
}
918
}
919
920
/* If the interface is down, bring it up */
921
{
922
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
923
if(sd < 0) {
924
perror("socket");
925
exitcode = EXIT_FAILURE;
926
goto end;
927
}
928
strcpy(network.ifr_name, interface);
929
ret = ioctl(sd, SIOCGIFFLAGS, &network);
930
if(ret == -1){
931
perror("ioctl SIOCGIFFLAGS");
932
exitcode = EXIT_FAILURE;
933
goto end;
934
}
935
if((network.ifr_flags & IFF_UP) == 0){
936
network.ifr_flags |= IFF_UP;
937
ret = ioctl(sd, SIOCSIFFLAGS, &network);
938
if(ret == -1){
939
perror("ioctl SIOCSIFFLAGS");
940
exitcode = EXIT_FAILURE;
941
goto end;
942
}
943
}
944
ret = (int)TEMP_FAILURE_RETRY(close(sd));
945
if(ret == -1){
946
perror("close");
947
}
948
}
949
950
uid = getuid();
951
gid = getgid();
952
953
ret = setuid(uid);
954
if(ret == -1){
955
perror("setuid");
956
}
957
958
setgid(gid);
959
if(ret == -1){
960
perror("setgid");
961
}
962
963
ret = init_gnutls_global(&mc, pubkey, seckey);
964
if(ret == -1){
965
fprintf(stderr, "init_gnutls_global failed\n");
966
exitcode = EXIT_FAILURE;
967
goto end;
968
} else {
969
gnutls_initalized = true;
970
}
971
972
if(mkdtemp(tempdir) == NULL){
973
perror("mkdtemp");
974
tempdir[0] = '\0';
975
goto end;
976
}
977
978
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
979
fprintf(stderr, "gpgme_initalized failed\n");
980
exitcode = EXIT_FAILURE;
981
goto end;
982
} else {
983
gpgme_initalized = true;
804
984
}
805
985
806
986
if_index = (AvahiIfIndex) if_nametoindex(interface);
815
995
char *address = strrchr(connect_to, ':');
816
996
if(address == NULL){
817
997
fprintf(stderr, "No colon in address\n");
818
exit(EXIT_FAILURE);
998
exitcode = EXIT_FAILURE;
999
goto end;
819
1000
}
820
errno = 0;
821
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
822
if(errno){
823
perror("Bad port number");
824
exit(EXIT_FAILURE);
1001
uint16_t port;
1002
ret = sscanf(address+1, "%" SCNu16, &port);
1003
if(ret != 1){
1004
fprintf(stderr, "Bad port number\n");
1005
exitcode = EXIT_FAILURE;
1006
goto end;
825
1007
}
826
1008
*address = '\0';
827
1009
address = connect_to;
828
1010
ret = start_mandos_communication(address, port, if_index, &mc);
829
1011
if(ret < 0){
830
exit(EXIT_FAILURE);
1012
exitcode = EXIT_FAILURE;
831
1013
} else {
832
exit(EXIT_SUCCESS);
833
}
834
}
835
836
/* If the interface is down, bring it up */
837
{
838
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
839
if(sd < 0) {
840
perror("socket");
841
exitcode = EXIT_FAILURE;
842
goto end;
843
}
844
strcpy(network.ifr_name, interface); /* Spurious warning */
845
ret = ioctl(sd, SIOCGIFFLAGS, &network);
846
if(ret == -1){
847
perror("ioctl SIOCGIFFLAGS");
848
exitcode = EXIT_FAILURE;
849
goto end;
850
}
851
if((network.ifr_flags & IFF_UP) == 0){
852
network.ifr_flags |= IFF_UP;
853
ret = ioctl(sd, SIOCSIFFLAGS, &network);
854
if(ret == -1){
855
perror("ioctl SIOCSIFFLAGS");
856
exitcode = EXIT_FAILURE;
857
goto end;
858
}
859
}
860
close(sd);
861
}
862
863
if (not debug){
1014
exitcode = EXIT_SUCCESS;
1015
}
1016
goto end;
1017
}
1018
1019
if(not debug){
864
1020
avahi_set_log_function(empty_log);
865
1021
}
866
1022
869
1025
870
1026
/* Allocate main Avahi loop object */
871
1027
mc.simple_poll = avahi_simple_poll_new();
872
if (mc.simple_poll == NULL) {
1028
if(mc.simple_poll == NULL) {
873
1029
fprintf(stderr, "Avahi: Failed to create simple poll"
874
1030
" object.\n");
875
1031
exitcode = EXIT_FAILURE;
876
1032
goto end;
877
1033
}
878
1034
879
1035
{
880
1036
AvahiServerConfig config;
881
1037
/* Do not publish any local Zeroconf records */
884
1040
config.publish_addresses = 0;
885
1041
config.publish_workstation = 0;
886
1042
config.publish_domain = 0;
887
1043
888
1044
/* Allocate a new server */
889
1045
mc.server = avahi_server_new(avahi_simple_poll_get
890
1046
(mc.simple_poll), &config, NULL,
891
1047
NULL, &error);
892
1048
893
1049
/* Free the Avahi configuration data */
894
1050
avahi_server_config_free(&config);
895
1051
}
896
1052
897
1053
/* Check if creating the Avahi server object succeeded */
898
if (mc.server == NULL) {
1054
if(mc.server == NULL) {
899
1055
fprintf(stderr, "Failed to create Avahi server: %s\n",
900
1056
avahi_strerror(error));
901
1057
exitcode = EXIT_FAILURE;
907
1063
AVAHI_PROTO_INET6,
908
1064
"_mandos._tcp", NULL, 0,
909
1065
browse_callback, &mc);
910
if (sb == NULL) {
1066
if(sb == NULL) {
911
1067
fprintf(stderr, "Failed to create service browser: %s\n",
912
1068
avahi_strerror(avahi_server_errno(mc.server)));
913
1069
exitcode = EXIT_FAILURE;
915
1071
}
916
1072
917
1073
/* Run the main loop */
918
919
if (debug){
1074
1075
if(debug){
920
1076
fprintf(stderr, "Starting Avahi loop search\n");
921
1077
}
922
1078
923
1079
avahi_simple_poll_loop(mc.simple_poll);
924
1080
925
1081
end:
926
927
if (debug){
1082
1083
if(debug){
928
1084
fprintf(stderr, "%s exiting\n", argv[0]);
929
1085
}
930
1086
931
1087
/* Cleanup things */
932
if (sb != NULL)
1088
if(sb != NULL)
933
1089
avahi_s_service_browser_free(sb);
934
1090
935
if (mc.server != NULL)
1091
if(mc.server != NULL)
936
1092
avahi_server_free(mc.server);
937
938
if (mc.simple_poll != NULL)
1093
1094
if(mc.simple_poll != NULL)
939
1095
avahi_simple_poll_free(mc.simple_poll);
940
free(pubkeyfile);
941
free(seckeyfile);
942
1096
1097
if(gnutls_initalized){
1098
gnutls_certificate_free_credentials(mc.cred);
1099
gnutls_global_deinit();
1100
gnutls_dh_params_deinit(mc.dh_params);
1101
}
1102
1103
if(gpgme_initalized){
1104
gpgme_release(mc.ctx);
1105
}
1106
1107
/* Removes the temp directory used by GPGME */
1108
if(tempdir[0] != '\0'){
1109
DIR *d;
1110
struct dirent *direntry;
1111
d = opendir(tempdir);
1112
if(d == NULL){
1113
if(errno != ENOENT){
1114
perror("opendir");
1115
}
1116
} else {
1117
while(true){
1118
direntry = readdir(d);
1119
if(direntry == NULL){
1120
break;
1121
}
1122
if(direntry->d_type == DT_REG){
1123
char *fullname = NULL;
1124
ret = asprintf(&fullname, "%s/%s", tempdir,
1125
direntry->d_name);
1126
if(ret < 0){
1127
perror("asprintf");
1128
continue;
1129
}
1130
ret = unlink(fullname);
1131
if(ret == -1){
1132
fprintf(stderr, "unlink(\"%s\"): %s",
1133
fullname, strerror(errno));
1134
}
1135
free(fullname);
1136
}
1137
}
1138
closedir(d);
1139
}
1140
ret = rmdir(tempdir);
1141
if(ret == -1 and errno != ENOENT){
1142
perror("rmdir");
1143
}
1144
}
1145
943
1146
return exitcode;
944
1147
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0