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- Committer: Björn Påhlsson
- Date: 2008-08-10 20:22:27 UTC
- mto: (24.1.154 mandos) (237.4.3 mandos-release)
- mto: This revision was merged to the branch mainline in revision 63.
- Revision ID: belorn@braxen-20080810202227-nz1a4g8pxfm6051l
Added fallback to mandos-client
- files added:
- network-protocol.txt
- files removed:
- .bzr-builddeb
- debian
- debian/po
- files renamed:
- plugin-runner.c => mandos-client.c
- plugin-runner.xml => mandos-client.xml
- plugins.d/mandos-client.c => plugins.d/password-request.c
- plugins.d/mandos-client.xml => plugins.d/password-request.xml
- files modified:
- Makefile
added
removed
plugins.d/password-request.c
1
1
/* -*- coding: utf-8 -*- */
2
2
/*
3
* Mandos-client - get and decrypt data from a Mandos server
3
* Mandos client - get and decrypt data from a Mandos server
4
4
*
5
5
* This program is partly derived from an example program for an Avahi
6
6
* service browser, downloaded from
9
9
* "browse_callback", and parts of "main".
10
10
*
11
11
* Everything else is
12
* Copyright © 2008,2009 Teddy Hogeborn
13
* Copyright © 2008,2009 Björn Påhlsson
12
* Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
14
13
*
15
14
* This program is free software: you can redistribute it and/or
16
15
* modify it under the terms of the GNU General Public License as
33
32
#define _LARGEFILE_SOURCE
34
33
#define _FILE_OFFSET_BITS 64
35
34
36
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
37
36
38
#include <stdio.h> /* fprintf(), stderr, fwrite(),
39
stdout, ferror(), sscanf(),
40
remove() */
37
#include <stdio.h> /* fprintf(), stderr, fwrite(), stdout,
38
ferror() */
41
39
#include <stdint.h> /* uint16_t, uint32_t */
42
40
#include <stddef.h> /* NULL, size_t, ssize_t */
43
41
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
44
42
srand() */
45
43
#include <stdbool.h> /* bool, true */
46
44
#include <string.h> /* memset(), strcmp(), strlen(),
47
strerror(), asprintf(), strcpy() */
45
strerror(), memcpy(), strcpy() */
48
46
#include <sys/ioctl.h> /* ioctl */
47
#include <net/if.h> /* ifreq, SIOCGIFFLAGS, SIOCSIFFLAGS,
48
IFF_UP */
49
49
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
50
50
sockaddr_in6, PF_INET6,
51
51
SOCK_STREAM, INET6_ADDRSTRLEN,
52
uid_t, gid_t, open(), opendir(),
53
DIR */
54
#include <sys/stat.h> /* open() */
52
uid_t, gid_t */
53
#include <inttypes.h> /* PRIu16 */
55
54
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
56
55
struct in6_addr, inet_pton(),
57
56
connect() */
58
#include <fcntl.h> /* open() */
59
#include <dirent.h> /* opendir(), struct dirent, readdir()
60
*/
61
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
62
57
#include <assert.h> /* assert() */
63
58
#include <errno.h> /* perror(), errno */
64
#include <time.h> /* nanosleep(), time() */
59
#include <time.h> /* time() */
65
60
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
66
61
SIOCSIFFLAGS, if_indextoname(),
67
62
if_nametoindex(), IF_NAMESIZE */
68
#include <netinet/in.h>
69
63
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
70
64
getuid(), getgid(), setuid(),
71
65
setgid() */
66
#include <netinet/in.h>
72
67
#include <arpa/inet.h> /* inet_pton(), htons */
73
#include <iso646.h> /* not, and, or */
68
#include <iso646.h> /* not, and */
74
69
#include <argp.h> /* struct argp_option, error_t, struct
75
70
argp_state, struct argp,
76
71
argp_parse(), ARGP_KEY_ARG,
77
72
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
78
#include <sys/klog.h> /* klogctl() */
79
73
80
74
/* Avahi */
81
75
/* All Avahi types, constants and functions
89
83
#include <avahi-common/error.h>
90
84
91
85
/* GnuTLS */
92
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
93
functions:
86
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and functions
94
87
gnutls_*
95
88
init_gnutls_session(),
96
89
GNUTLS_* */
97
#include <gnutls/openpgp.h>
98
/* gnutls_certificate_set_openpgp_key_file(),
90
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
99
91
GNUTLS_OPENPGP_FMT_BASE64 */
100
92
101
93
/* GPGME */
102
#include <gpgme.h> /* All GPGME types, constants and
103
functions:
94
#include <gpgme.h> /* All GPGME types, constants and functions
104
95
gpgme_*
105
96
GPGME_PROTOCOL_OpenPGP,
106
97
GPG_ERR_NO_* */
107
98
108
99
#define BUFFER_SIZE 256
109
100
110
#define PATHDIR "/conf/conf.d/mandos"
111
#define SECKEY "seckey.txt"
112
#define PUBKEY "pubkey.txt"
113
114
101
bool debug = false;
102
static const char *keydir = "/conf/conf.d/mandos";
115
103
static const char mandos_protocol_version[] = "1";
116
const char *argp_program_version = "mandos-client " VERSION;
104
const char *argp_program_version = "password-request 1.0";
117
105
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
118
106
119
107
/* Used for passing in values through the Avahi callback functions */
124
112
unsigned int dh_bits;
125
113
gnutls_dh_params_t dh_params;
126
114
const char *priority;
127
gpgme_ctx_t ctx;
128
115
} mandos_context;
129
116
130
117
/*
134
121
*/
135
122
size_t adjustbuffer(char **buffer, size_t buffer_length,
136
123
size_t buffer_capacity){
137
if(buffer_length + BUFFER_SIZE > buffer_capacity){
124
if (buffer_length + BUFFER_SIZE > buffer_capacity){
138
125
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
139
if(buffer == NULL){
126
if (buffer == NULL){
140
127
return 0;
141
128
}
142
129
buffer_capacity += BUFFER_SIZE;
145
132
}
146
133
147
134
/*
148
* Initialize GPGME.
135
* Decrypt OpenPGP data using keyrings in HOMEDIR.
136
* Returns -1 on error
149
137
*/
150
static bool init_gpgme(mandos_context *mc, const char *seckey,
151
const char *pubkey, const char *tempdir){
152
int ret;
138
static ssize_t pgp_packet_decrypt (const char *cryptotext,
139
size_t crypto_size,
140
char **plaintext,
141
const char *homedir){
142
gpgme_data_t dh_crypto, dh_plain;
143
gpgme_ctx_t ctx;
153
144
gpgme_error_t rc;
145
ssize_t ret;
146
size_t plaintext_capacity = 0;
147
ssize_t plaintext_length = 0;
154
148
gpgme_engine_info_t engine_info;
155
149
156
157
/*
158
* Helper function to insert pub and seckey to the engine keyring.
159
*/
160
bool import_key(const char *filename){
161
int fd;
162
gpgme_data_t pgp_data;
163
164
fd = (int)TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
165
if(fd == -1){
166
perror("open");
167
return false;
168
}
169
170
rc = gpgme_data_new_from_fd(&pgp_data, fd);
171
if(rc != GPG_ERR_NO_ERROR){
172
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
173
gpgme_strsource(rc), gpgme_strerror(rc));
174
return false;
175
}
176
177
rc = gpgme_op_import(mc->ctx, pgp_data);
178
if(rc != GPG_ERR_NO_ERROR){
179
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
180
gpgme_strsource(rc), gpgme_strerror(rc));
181
return false;
182
}
183
184
ret = (int)TEMP_FAILURE_RETRY(close(fd));
185
if(ret == -1){
186
perror("close");
187
}
188
gpgme_data_release(pgp_data);
189
return true;
190
}
191
192
if(debug){
193
fprintf(stderr, "Initialize gpgme\n");
150
if (debug){
151
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
194
152
}
195
153
196
154
/* Init GPGME */
197
155
gpgme_check_version(NULL);
198
156
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
199
if(rc != GPG_ERR_NO_ERROR){
157
if (rc != GPG_ERR_NO_ERROR){
200
158
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
201
159
gpgme_strsource(rc), gpgme_strerror(rc));
202
return false;
160
return -1;
203
161
}
204
162
205
/* Set GPGME home directory for the OpenPGP engine only */
206
rc = gpgme_get_engine_info(&engine_info);
207
if(rc != GPG_ERR_NO_ERROR){
163
/* Set GPGME home directory for the OpenPGP engine only */
164
rc = gpgme_get_engine_info (&engine_info);
165
if (rc != GPG_ERR_NO_ERROR){
208
166
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
209
167
gpgme_strsource(rc), gpgme_strerror(rc));
210
return false;
168
return -1;
211
169
}
212
170
while(engine_info != NULL){
213
171
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
214
172
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
215
engine_info->file_name, tempdir);
173
engine_info->file_name, homedir);
216
174
break;
217
175
}
218
176
engine_info = engine_info->next;
219
177
}
220
178
if(engine_info == NULL){
221
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
222
return false;
223
}
224
225
/* Create new GPGME "context" */
226
rc = gpgme_new(&(mc->ctx));
227
if(rc != GPG_ERR_NO_ERROR){
228
fprintf(stderr, "bad gpgme_new: %s: %s\n",
229
gpgme_strsource(rc), gpgme_strerror(rc));
230
return false;
231
}
232
233
if(not import_key(pubkey) or not import_key(seckey)){
234
return false;
235
}
236
237
return true;
238
}
239
240
/*
241
* Decrypt OpenPGP data.
242
* Returns -1 on error
243
*/
244
static ssize_t pgp_packet_decrypt(const mandos_context *mc,
245
const char *cryptotext,
246
size_t crypto_size,
247
char **plaintext){
248
gpgme_data_t dh_crypto, dh_plain;
249
gpgme_error_t rc;
250
ssize_t ret;
251
size_t plaintext_capacity = 0;
252
ssize_t plaintext_length = 0;
253
254
if(debug){
255
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
179
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
180
return -1;
256
181
}
257
182
258
183
/* Create new GPGME data buffer from memory cryptotext */
259
184
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
260
185
0);
261
if(rc != GPG_ERR_NO_ERROR){
186
if (rc != GPG_ERR_NO_ERROR){
262
187
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
263
188
gpgme_strsource(rc), gpgme_strerror(rc));
264
189
return -1;
266
191
267
192
/* Create new empty GPGME data buffer for the plaintext */
268
193
rc = gpgme_data_new(&dh_plain);
269
if(rc != GPG_ERR_NO_ERROR){
194
if (rc != GPG_ERR_NO_ERROR){
270
195
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
271
196
gpgme_strsource(rc), gpgme_strerror(rc));
272
197
gpgme_data_release(dh_crypto);
273
198
return -1;
274
199
}
275
200
201
/* Create new GPGME "context" */
202
rc = gpgme_new(&ctx);
203
if (rc != GPG_ERR_NO_ERROR){
204
fprintf(stderr, "bad gpgme_new: %s: %s\n",
205
gpgme_strsource(rc), gpgme_strerror(rc));
206
plaintext_length = -1;
207
goto decrypt_end;
208
}
209
276
210
/* Decrypt data from the cryptotext data buffer to the plaintext
277
211
data buffer */
278
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
279
if(rc != GPG_ERR_NO_ERROR){
212
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
213
if (rc != GPG_ERR_NO_ERROR){
280
214
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
281
215
gpgme_strsource(rc), gpgme_strerror(rc));
282
216
plaintext_length = -1;
283
if(debug){
284
gpgme_decrypt_result_t result;
285
result = gpgme_op_decrypt_result(mc->ctx);
286
if(result == NULL){
287
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
288
} else {
289
fprintf(stderr, "Unsupported algorithm: %s\n",
290
result->unsupported_algorithm);
291
fprintf(stderr, "Wrong key usage: %u\n",
292
result->wrong_key_usage);
293
if(result->file_name != NULL){
294
fprintf(stderr, "File name: %s\n", result->file_name);
295
}
296
gpgme_recipient_t recipient;
297
recipient = result->recipients;
298
if(recipient){
299
while(recipient != NULL){
300
fprintf(stderr, "Public key algorithm: %s\n",
301
gpgme_pubkey_algo_name(recipient->pubkey_algo));
302
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
303
fprintf(stderr, "Secret key available: %s\n",
304
recipient->status == GPG_ERR_NO_SECKEY
305
? "No" : "Yes");
306
recipient = recipient->next;
307
}
308
}
309
}
310
}
311
217
goto decrypt_end;
312
218
}
313
219
315
221
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
316
222
}
317
223
224
if (debug){
225
gpgme_decrypt_result_t result;
226
result = gpgme_op_decrypt_result(ctx);
227
if (result == NULL){
228
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
229
} else {
230
fprintf(stderr, "Unsupported algorithm: %s\n",
231
result->unsupported_algorithm);
232
fprintf(stderr, "Wrong key usage: %u\n",
233
result->wrong_key_usage);
234
if(result->file_name != NULL){
235
fprintf(stderr, "File name: %s\n", result->file_name);
236
}
237
gpgme_recipient_t recipient;
238
recipient = result->recipients;
239
if(recipient){
240
while(recipient != NULL){
241
fprintf(stderr, "Public key algorithm: %s\n",
242
gpgme_pubkey_algo_name(recipient->pubkey_algo));
243
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
244
fprintf(stderr, "Secret key available: %s\n",
245
recipient->status == GPG_ERR_NO_SECKEY
246
? "No" : "Yes");
247
recipient = recipient->next;
248
}
249
}
250
}
251
}
252
318
253
/* Seek back to the beginning of the GPGME plaintext data buffer */
319
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
320
perror("gpgme_data_seek");
254
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
255
perror("pgpme_data_seek");
321
256
plaintext_length = -1;
322
257
goto decrypt_end;
323
258
}
327
262
plaintext_capacity = adjustbuffer(plaintext,
328
263
(size_t)plaintext_length,
329
264
plaintext_capacity);
330
if(plaintext_capacity == 0){
265
if (plaintext_capacity == 0){
331
266
perror("adjustbuffer");
332
267
plaintext_length = -1;
333
268
goto decrypt_end;
336
271
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
337
272
BUFFER_SIZE);
338
273
/* Print the data, if any */
339
if(ret == 0){
274
if (ret == 0){
340
275
/* EOF */
341
276
break;
342
277
}
347
282
}
348
283
plaintext_length += ret;
349
284
}
350
285
351
286
if(debug){
352
287
fprintf(stderr, "Decrypted password is: ");
353
288
for(ssize_t i = 0; i < plaintext_length; i++){
366
301
return plaintext_length;
367
302
}
368
303
369
static const char * safer_gnutls_strerror(int value) {
370
const char *ret = gnutls_strerror(value); /* Spurious warning from
371
-Wunreachable-code */
372
if(ret == NULL)
304
static const char * safer_gnutls_strerror (int value) {
305
const char *ret = gnutls_strerror (value);
306
if (ret == NULL)
373
307
ret = "(unknown)";
374
308
return ret;
375
309
}
381
315
}
382
316
383
317
static int init_gnutls_global(mandos_context *mc,
384
const char *pubkeyfilename,
385
const char *seckeyfilename){
318
const char *pubkeyfile,
319
const char *seckeyfile){
386
320
int ret;
387
321
388
322
if(debug){
390
324
}
391
325
392
326
ret = gnutls_global_init();
393
if(ret != GNUTLS_E_SUCCESS) {
394
fprintf(stderr, "GnuTLS global_init: %s\n",
395
safer_gnutls_strerror(ret));
327
if (ret != GNUTLS_E_SUCCESS) {
328
fprintf (stderr, "GnuTLS global_init: %s\n",
329
safer_gnutls_strerror(ret));
396
330
return -1;
397
331
}
398
332
399
if(debug){
333
if (debug){
400
334
/* "Use a log level over 10 to enable all debugging options."
401
335
* - GnuTLS manual
402
336
*/
406
340
407
341
/* OpenPGP credentials */
408
342
gnutls_certificate_allocate_credentials(&mc->cred);
409
if(ret != GNUTLS_E_SUCCESS){
410
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
411
* from
412
* -Wunreachable-code
413
*/
414
safer_gnutls_strerror(ret));
415
gnutls_global_deinit();
343
if (ret != GNUTLS_E_SUCCESS){
344
fprintf (stderr, "GnuTLS memory error: %s\n",
345
safer_gnutls_strerror(ret));
346
gnutls_global_deinit ();
416
347
return -1;
417
348
}
418
349
419
350
if(debug){
420
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
421
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
422
seckeyfilename);
351
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
352
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
353
seckeyfile);
423
354
}
424
355
425
356
ret = gnutls_certificate_set_openpgp_key_file
426
(mc->cred, pubkeyfilename, seckeyfilename,
427
GNUTLS_OPENPGP_FMT_BASE64);
428
if(ret != GNUTLS_E_SUCCESS) {
357
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
358
if (ret != GNUTLS_E_SUCCESS) {
429
359
fprintf(stderr,
430
360
"Error[%d] while reading the OpenPGP key pair ('%s',"
431
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
432
fprintf(stderr, "The GnuTLS error is: %s\n",
361
" '%s')\n", ret, pubkeyfile, seckeyfile);
362
fprintf(stdout, "The GnuTLS error is: %s\n",
433
363
safer_gnutls_strerror(ret));
434
364
goto globalfail;
435
365
}
436
366
437
367
/* GnuTLS server initialization */
438
368
ret = gnutls_dh_params_init(&mc->dh_params);
439
if(ret != GNUTLS_E_SUCCESS) {
440
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
441
" %s\n", safer_gnutls_strerror(ret));
369
if (ret != GNUTLS_E_SUCCESS) {
370
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
371
" %s\n", safer_gnutls_strerror(ret));
442
372
goto globalfail;
443
373
}
444
374
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
445
if(ret != GNUTLS_E_SUCCESS) {
446
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
447
safer_gnutls_strerror(ret));
375
if (ret != GNUTLS_E_SUCCESS) {
376
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
377
safer_gnutls_strerror(ret));
448
378
goto globalfail;
449
379
}
450
380
451
381
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
452
382
453
383
return 0;
454
384
455
385
globalfail:
456
386
457
387
gnutls_certificate_free_credentials(mc->cred);
458
388
gnutls_global_deinit();
459
gnutls_dh_params_deinit(mc->dh_params);
460
389
return -1;
390
461
391
}
462
392
463
393
static int init_gnutls_session(mandos_context *mc,
465
395
int ret;
466
396
/* GnuTLS session creation */
467
397
ret = gnutls_init(session, GNUTLS_SERVER);
468
if(ret != GNUTLS_E_SUCCESS){
398
if (ret != GNUTLS_E_SUCCESS){
469
399
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
470
400
safer_gnutls_strerror(ret));
471
401
}
473
403
{
474
404
const char *err;
475
405
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
476
if(ret != GNUTLS_E_SUCCESS) {
406
if (ret != GNUTLS_E_SUCCESS) {
477
407
fprintf(stderr, "Syntax error at: %s\n", err);
478
408
fprintf(stderr, "GnuTLS error: %s\n",
479
409
safer_gnutls_strerror(ret));
480
gnutls_deinit(*session);
410
gnutls_deinit (*session);
481
411
return -1;
482
412
}
483
413
}
484
414
485
415
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
486
416
mc->cred);
487
if(ret != GNUTLS_E_SUCCESS) {
417
if (ret != GNUTLS_E_SUCCESS) {
488
418
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
489
419
safer_gnutls_strerror(ret));
490
gnutls_deinit(*session);
420
gnutls_deinit (*session);
491
421
return -1;
492
422
}
493
423
494
424
/* ignore client certificate if any. */
495
gnutls_certificate_server_set_request(*session,
496
GNUTLS_CERT_IGNORE);
425
gnutls_certificate_server_set_request (*session,
426
GNUTLS_CERT_IGNORE);
497
427
498
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
428
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
499
429
500
430
return 0;
501
431
}
509
439
AvahiIfIndex if_index,
510
440
mandos_context *mc){
511
441
int ret, tcp_sd;
512
ssize_t sret;
513
442
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
514
443
char *buffer = NULL;
515
444
char *decrypted_buffer;
521
450
char interface[IF_NAMESIZE];
522
451
gnutls_session_t session;
523
452
524
ret = init_gnutls_session(mc, &session);
525
if(ret != 0){
453
ret = init_gnutls_session (mc, &session);
454
if (ret != 0){
526
455
return -1;
527
456
}
528
457
536
465
perror("socket");
537
466
return -1;
538
467
}
539
468
540
469
if(debug){
541
470
if(if_indextoname((unsigned int)if_index, interface) == NULL){
542
471
perror("if_indextoname");
545
474
fprintf(stderr, "Binding to interface %s\n", interface);
546
475
}
547
476
548
memset(&to, 0, sizeof(to));
477
memset(&to,0,sizeof(to)); /* Spurious warning */
549
478
to.in6.sin6_family = AF_INET6;
550
479
/* It would be nice to have a way to detect if we were passed an
551
480
IPv4 address here. Now we assume an IPv6 address. */
552
481
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
553
if(ret < 0 ){
482
if (ret < 0 ){
554
483
perror("inet_pton");
555
484
return -1;
556
485
}
558
487
fprintf(stderr, "Bad address: %s\n", ip);
559
488
return -1;
560
489
}
561
to.in6.sin6_port = htons(port); /* Spurious warnings from
562
-Wconversion and
563
-Wunreachable-code */
490
to.in6.sin6_port = htons(port); /* Spurious warning */
564
491
565
492
to.in6.sin6_scope_id = (uint32_t)if_index;
566
493
579
506
}
580
507
581
508
ret = connect(tcp_sd, &to.in, sizeof(to));
582
if(ret < 0){
509
if (ret < 0){
583
510
perror("connect");
584
511
return -1;
585
512
}
586
513
587
514
const char *out = mandos_protocol_version;
588
515
written = 0;
589
while(true){
516
while (true){
590
517
size_t out_size = strlen(out);
591
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
518
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
592
519
out_size - written));
593
if(ret == -1){
520
if (ret == -1){
594
521
perror("write");
595
522
retval = -1;
596
523
goto mandos_end;
599
526
if(written < out_size){
600
527
continue;
601
528
} else {
602
if(out == mandos_protocol_version){
529
if (out == mandos_protocol_version){
603
530
written = 0;
604
531
out = "\r\n";
605
532
} else {
607
534
}
608
535
}
609
536
}
610
537
611
538
if(debug){
612
539
fprintf(stderr, "Establishing TLS session with %s\n", ip);
613
540
}
614
541
615
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
616
542
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
543
617
544
do{
618
ret = gnutls_handshake(session);
545
ret = gnutls_handshake (session);
619
546
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
620
547
621
if(ret != GNUTLS_E_SUCCESS){
548
if (ret != GNUTLS_E_SUCCESS){
622
549
if(debug){
623
550
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
624
gnutls_perror(ret);
551
gnutls_perror (ret);
625
552
}
626
553
retval = -1;
627
554
goto mandos_end;
633
560
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
634
561
ip);
635
562
}
636
563
637
564
while(true){
638
565
buffer_capacity = adjustbuffer(&buffer, buffer_length,
639
566
buffer_capacity);
640
if(buffer_capacity == 0){
567
if (buffer_capacity == 0){
641
568
perror("adjustbuffer");
642
569
retval = -1;
643
570
goto mandos_end;
644
571
}
645
572
646
sret = gnutls_record_recv(session, buffer+buffer_length,
647
BUFFER_SIZE);
648
if(sret == 0){
573
ret = gnutls_record_recv(session, buffer+buffer_length,
574
BUFFER_SIZE);
575
if (ret == 0){
649
576
break;
650
577
}
651
if(sret < 0){
652
switch(sret){
578
if (ret < 0){
579
switch(ret){
653
580
case GNUTLS_E_INTERRUPTED:
654
581
case GNUTLS_E_AGAIN:
655
582
break;
656
583
case GNUTLS_E_REHANDSHAKE:
657
584
do{
658
ret = gnutls_handshake(session);
585
ret = gnutls_handshake (session);
659
586
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
660
if(ret < 0){
587
if (ret < 0){
661
588
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
662
gnutls_perror(ret);
589
gnutls_perror (ret);
663
590
retval = -1;
664
591
goto mandos_end;
665
592
}
668
595
fprintf(stderr, "Unknown error while reading data from"
669
596
" encrypted session with Mandos server\n");
670
597
retval = -1;
671
gnutls_bye(session, GNUTLS_SHUT_RDWR);
598
gnutls_bye (session, GNUTLS_SHUT_RDWR);
672
599
goto mandos_end;
673
600
}
674
601
} else {
675
buffer_length += (size_t) sret;
602
buffer_length += (size_t) ret;
676
603
}
677
604
}
678
605
680
607
fprintf(stderr, "Closing TLS session\n");
681
608
}
682
609
683
gnutls_bye(session, GNUTLS_SHUT_RDWR);
610
gnutls_bye (session, GNUTLS_SHUT_RDWR);
684
611
685
if(buffer_length > 0){
686
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
612
if (buffer_length > 0){
613
decrypted_buffer_size = pgp_packet_decrypt(buffer,
687
614
buffer_length,
688
&decrypted_buffer);
689
if(decrypted_buffer_size >= 0){
615
&decrypted_buffer,
616
keydir);
617
if (decrypted_buffer_size >= 0){
690
618
written = 0;
691
619
while(written < (size_t) decrypted_buffer_size){
692
ret = (int)fwrite(decrypted_buffer + written, 1,
693
(size_t)decrypted_buffer_size - written,
694
stdout);
620
ret = (int)fwrite (decrypted_buffer + written, 1,
621
(size_t)decrypted_buffer_size - written,
622
stdout);
695
623
if(ret == 0 and ferror(stdout)){
696
624
if(debug){
697
625
fprintf(stderr, "Error writing encrypted data: %s\n",
706
634
} else {
707
635
retval = -1;
708
636
}
709
} else {
710
retval = -1;
711
637
}
712
638
713
639
/* Shutdown procedure */
714
640
715
641
mandos_end:
716
642
free(buffer);
717
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
718
if(ret == -1){
719
perror("close");
720
}
721
gnutls_deinit(session);
643
close(tcp_sd);
644
gnutls_deinit (session);
722
645
return retval;
723
646
}
724
647
737
660
flags,
738
661
void* userdata) {
739
662
mandos_context *mc = userdata;
740
assert(r);
663
assert(r); /* Spurious warning */
741
664
742
665
/* Called whenever a service has been resolved successfully or
743
666
timed out */
744
667
745
switch(event) {
668
switch (event) {
746
669
default:
747
670
case AVAHI_RESOLVER_FAILURE:
748
671
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
756
679
avahi_address_snprint(ip, sizeof(ip), address);
757
680
if(debug){
758
681
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
759
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
760
ip, (intmax_t)interface, port);
682
PRIu16 ") on port %d\n", name, host_name, ip,
683
interface, port);
761
684
}
762
685
int ret = start_mandos_communication(ip, port, interface, mc);
763
if(ret == 0){
764
avahi_simple_poll_quit(mc->simple_poll);
686
if (ret == 0){
687
exit(EXIT_SUCCESS);
765
688
}
766
689
}
767
690
}
779
702
flags,
780
703
void* userdata) {
781
704
mandos_context *mc = userdata;
782
assert(b);
705
assert(b); /* Spurious warning */
783
706
784
707
/* Called whenever a new services becomes available on the LAN or
785
708
is removed from the LAN */
786
709
787
switch(event) {
710
switch (event) {
788
711
default:
789
712
case AVAHI_BROWSER_FAILURE:
790
713
799
722
the callback function is called the Avahi server will free the
800
723
resolver for us. */
801
724
802
if(!(avahi_s_service_resolver_new(mc->server, interface,
725
if (!(avahi_s_service_resolver_new(mc->server, interface,
803
726
protocol, name, type, domain,
804
727
AVAHI_PROTO_INET6, 0,
805
728
resolve_callback, mc)))
819
742
}
820
743
}
821
744
745
/* Combines file name and path and returns the malloced new
746
string. some sane checks could/should be added */
747
static const char *combinepath(const char *first, const char *second){
748
size_t f_len = strlen(first);
749
size_t s_len = strlen(second);
750
char *tmp = malloc(f_len + s_len + 2);
751
if (tmp == NULL){
752
return NULL;
753
}
754
if(f_len > 0){
755
memcpy(tmp, first, f_len); /* Spurious warning */
756
}
757
tmp[f_len] = '/';
758
if(s_len > 0){
759
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
760
}
761
tmp[f_len + 1 + s_len] = '\0';
762
return tmp;
763
}
764
765
822
766
int main(int argc, char *argv[]){
823
767
AvahiSServiceBrowser *sb = NULL;
824
768
int error;
825
769
int ret;
826
intmax_t tmpmax;
827
int numchars;
828
770
int exitcode = EXIT_SUCCESS;
829
771
const char *interface = "eth0";
830
772
struct ifreq network;
832
774
uid_t uid;
833
775
gid_t gid;
834
776
char *connect_to = NULL;
835
char tempdir[] = "/tmp/mandosXXXXXX";
836
bool tempdir_created = false;
837
777
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
838
const char *seckey = PATHDIR "/" SECKEY;
839
const char *pubkey = PATHDIR "/" PUBKEY;
840
778
const char *pubkeyfile = "pubkey.txt";
779
const char *seckeyfile = "seckey.txt";
841
780
mandos_context mc = { .simple_poll = NULL, .server = NULL,
842
.dh_bits = 1024, .priority = "SECURE256"
843
":!CTYPE-X.509:+CTYPE-OPENPGP" };
844
bool gnutls_initialized = false;
845
bool gpgme_initialized = false;
846
double delay = 2.5;
781
.dh_bits = 1024, .priority = "SECURE256"};
782
bool gnutls_initalized = false;
847
783
848
784
{
849
785
struct argp_option options[] = {
850
786
{ .name = "debug", .key = 128,
851
787
.doc = "Debug mode", .group = 3 },
852
788
{ .name = "connect", .key = 'c',
853
.arg = "ADDRESS:PORT",
854
.doc = "Connect directly to a specific Mandos server",
789
.arg = "IP",
790
.doc = "Connect directly to a sepcified mandos server",
855
791
.group = 1 },
856
792
{ .name = "interface", .key = 'i',
857
.arg = "NAME",
858
.doc = "Interface that will be used to search for Mandos"
859
" servers",
793
.arg = "INTERFACE",
794
.doc = "Interface that Avahi will conntect through",
795
.group = 1 },
796
{ .name = "keydir", .key = 'd',
797
.arg = "KEYDIR",
798
.doc = "Directory where the openpgp keyring is",
860
799
.group = 1 },
861
800
{ .name = "seckey", .key = 's',
862
.arg = "FILE",
863
.doc = "OpenPGP secret key file base name",
801
.arg = "SECKEY",
802
.doc = "Secret openpgp key for gnutls authentication",
864
803
.group = 1 },
865
804
{ .name = "pubkey", .key = 'p',
866
.arg = "FILE",
867
.doc = "OpenPGP public key file base name",
805
.arg = "PUBKEY",
806
.doc = "Public openpgp key for gnutls authentication",
868
807
.group = 2 },
869
808
{ .name = "dh-bits", .key = 129,
870
809
.arg = "BITS",
871
.doc = "Bit length of the prime number used in the"
872
" Diffie-Hellman key exchange",
810
.doc = "dh-bits to use in gnutls communication",
873
811
.group = 2 },
874
812
{ .name = "priority", .key = 130,
875
.arg = "STRING",
876
.doc = "GnuTLS priority string for the TLS handshake",
877
.group = 1 },
878
{ .name = "delay", .key = 131,
879
.arg = "SECONDS",
880
.doc = "Maximum delay to wait for interface startup",
881
.group = 2 },
813
.arg = "PRIORITY",
814
.doc = "GNUTLS priority", .group = 1 },
882
815
{ .name = NULL }
883
816
};
817
884
818
885
error_t parse_opt(int key, char *arg,
886
struct argp_state *state) {
887
switch(key) {
888
case 128: /* --debug */
819
error_t parse_opt (int key, char *arg,
820
struct argp_state *state) {
821
/* Get the INPUT argument from `argp_parse', which we know is
822
a pointer to our plugin list pointer. */
823
switch (key) {
824
case 128:
889
825
debug = true;
890
826
break;
891
case 'c': /* --connect */
827
case 'c':
892
828
connect_to = arg;
893
829
break;
894
case 'i': /* --interface */
830
case 'i':
895
831
interface = arg;
896
832
break;
897
case 's': /* --seckey */
898
seckey = arg;
899
break;
900
case 'p': /* --pubkey */
901
pubkey = arg;
902
break;
903
case 129: /* --dh-bits */
904
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
905
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
906
or arg[numchars] != '\0'){
907
fprintf(stderr, "Bad number of DH bits\n");
833
case 'd':
834
keydir = arg;
835
break;
836
case 's':
837
seckeyfile = arg;
838
break;
839
case 'p':
840
pubkeyfile = arg;
841
break;
842
case 129:
843
errno = 0;
844
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
845
if (errno){
846
perror("strtol");
908
847
exit(EXIT_FAILURE);
909
848
}
910
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
911
849
break;
912
case 130: /* --priority */
850
case 130:
913
851
mc.priority = arg;
914
852
break;
915
case 131: /* --delay */
916
ret = sscanf(arg, "%lf%n", &delay, &numchars);
917
if(ret < 1 or arg[numchars] != '\0'){
918
fprintf(stderr, "Bad delay\n");
919
exit(EXIT_FAILURE);
920
}
921
break;
922
853
case ARGP_KEY_ARG:
923
argp_usage(state);
924
case ARGP_KEY_END:
854
argp_usage (state);
925
855
break;
856
case ARGP_KEY_END:
857
break;
926
858
default:
927
859
return ARGP_ERR_UNKNOWN;
928
860
}
929
861
return 0;
930
862
}
931
863
932
864
struct argp argp = { .options = options, .parser = parse_opt,
933
865
.args_doc = "",
934
866
.doc = "Mandos client -- Get and decrypt"
935
" passwords from a Mandos server" };
936
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
937
if(ret == ARGP_ERR_UNKNOWN){
938
fprintf(stderr, "Unknown error while parsing arguments\n");
867
" passwords from mandos server" };
868
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
869
if (ret == ARGP_ERR_UNKNOWN){
870
fprintf(stderr, "Unkown error while parsing arguments\n");
939
871
exitcode = EXIT_FAILURE;
940
872
goto end;
941
873
}
942
874
}
943
944
/* If the interface is down, bring it up */
945
{
946
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
947
messages to mess up the prompt */
948
ret = klogctl(8, NULL, 5);
949
if(ret == -1){
950
perror("klogctl");
951
}
952
875
953
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
954
if(sd < 0) {
955
perror("socket");
956
exitcode = EXIT_FAILURE;
957
ret = klogctl(7, NULL, 0);
958
if(ret == -1){
959
perror("klogctl");
960
}
961
goto end;
962
}
963
strcpy(network.ifr_name, interface);
964
ret = ioctl(sd, SIOCGIFFLAGS, &network);
965
if(ret == -1){
966
perror("ioctl SIOCGIFFLAGS");
967
ret = klogctl(7, NULL, 0);
968
if(ret == -1){
969
perror("klogctl");
970
}
971
exitcode = EXIT_FAILURE;
972
goto end;
973
}
974
if((network.ifr_flags & IFF_UP) == 0){
975
network.ifr_flags |= IFF_UP;
976
ret = ioctl(sd, SIOCSIFFLAGS, &network);
977
if(ret == -1){
978
perror("ioctl SIOCSIFFLAGS");
979
exitcode = EXIT_FAILURE;
980
ret = klogctl(7, NULL, 0);
981
if(ret == -1){
982
perror("klogctl");
983
}
984
goto end;
985
}
986
}
987
/* sleep checking until interface is running */
988
for(int i=0; i < delay * 4; i++){
989
ret = ioctl(sd, SIOCGIFFLAGS, &network);
990
if(ret == -1){
991
perror("ioctl SIOCGIFFLAGS");
992
} else if(network.ifr_flags & IFF_RUNNING){
993
break;
994
}
995
struct timespec sleeptime = { .tv_nsec = 250000000 };
996
nanosleep(&sleeptime, NULL);
997
}
998
ret = (int)TEMP_FAILURE_RETRY(close(sd));
999
if(ret == -1){
1000
perror("close");
1001
}
1002
/* Restores kernel loglevel to default */
1003
ret = klogctl(7, NULL, 0);
1004
if(ret == -1){
1005
perror("klogctl");
1006
}
876
pubkeyfile = combinepath(keydir, pubkeyfile);
877
if (pubkeyfile == NULL){
878
perror("combinepath");
879
exitcode = EXIT_FAILURE;
880
goto end;
1007
881
}
1008
882
883
seckeyfile = combinepath(keydir, seckeyfile);
884
if (seckeyfile == NULL){
885
perror("combinepath");
886
goto end;
887
}
888
889
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
890
if (ret == -1){
891
fprintf(stderr, "init_gnutls_global\n");
892
goto end;
893
} else {
894
gnutls_initalized = true;
895
}
896
1009
897
uid = getuid();
1010
898
gid = getgid();
899
900
ret = setuid(uid);
901
if (ret == -1){
902
perror("setuid");
903
}
1011
904
1012
905
setgid(gid);
1013
if(ret == -1){
906
if (ret == -1){
1014
907
perror("setgid");
1015
908
}
1016
909
1017
ret = setuid(uid);
1018
if(ret == -1){
1019
perror("setuid");
1020
}
1021
1022
ret = init_gnutls_global(&mc, pubkey, seckey);
1023
if(ret == -1){
1024
fprintf(stderr, "init_gnutls_global failed\n");
1025
exitcode = EXIT_FAILURE;
1026
goto end;
1027
} else {
1028
gnutls_initialized = true;
1029
}
1030
1031
if(mkdtemp(tempdir) == NULL){
1032
perror("mkdtemp");
1033
goto end;
1034
}
1035
tempdir_created = true;
1036
1037
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
1038
fprintf(stderr, "init_gpgme failed\n");
1039
exitcode = EXIT_FAILURE;
1040
goto end;
1041
} else {
1042
gpgme_initialized = true;
1043
}
1044
1045
910
if_index = (AvahiIfIndex) if_nametoindex(interface);
1046
911
if(if_index == 0){
1047
912
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1048
exitcode = EXIT_FAILURE;
1049
goto end;
913
exit(EXIT_FAILURE);
1050
914
}
1051
915
1052
916
if(connect_to != NULL){
1058
922
exitcode = EXIT_FAILURE;
1059
923
goto end;
1060
924
}
1061
uint16_t port;
1062
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1063
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1064
or address[numchars+1] != '\0'){
1065
fprintf(stderr, "Bad port number\n");
925
errno = 0;
926
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
927
if(errno){
928
perror("Bad port number");
1066
929
exitcode = EXIT_FAILURE;
1067
930
goto end;
1068
931
}
1069
port = (uint16_t)tmpmax;
1070
932
*address = '\0';
1071
933
address = connect_to;
1072
934
ret = start_mandos_communication(address, port, if_index, &mc);
1078
940
goto end;
1079
941
}
1080
942
1081
if(not debug){
943
/* If the interface is down, bring it up */
944
{
945
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
946
if(sd < 0) {
947
perror("socket");
948
exitcode = EXIT_FAILURE;
949
goto end;
950
}
951
strcpy(network.ifr_name, interface); /* Spurious warning */
952
ret = ioctl(sd, SIOCGIFFLAGS, &network);
953
if(ret == -1){
954
perror("ioctl SIOCGIFFLAGS");
955
exitcode = EXIT_FAILURE;
956
goto end;
957
}
958
if((network.ifr_flags & IFF_UP) == 0){
959
network.ifr_flags |= IFF_UP;
960
ret = ioctl(sd, SIOCSIFFLAGS, &network);
961
if(ret == -1){
962
perror("ioctl SIOCSIFFLAGS");
963
exitcode = EXIT_FAILURE;
964
goto end;
965
}
966
}
967
close(sd);
968
}
969
970
if (not debug){
1082
971
avahi_set_log_function(empty_log);
1083
972
}
1084
973
1087
976
1088
977
/* Allocate main Avahi loop object */
1089
978
mc.simple_poll = avahi_simple_poll_new();
1090
if(mc.simple_poll == NULL) {
979
if (mc.simple_poll == NULL) {
1091
980
fprintf(stderr, "Avahi: Failed to create simple poll"
1092
981
" object.\n");
1093
982
exitcode = EXIT_FAILURE;
1094
983
goto end;
1095
984
}
1096
985
1097
986
{
1098
987
AvahiServerConfig config;
1099
988
/* Do not publish any local Zeroconf records */
1102
991
config.publish_addresses = 0;
1103
992
config.publish_workstation = 0;
1104
993
config.publish_domain = 0;
1105
994
1106
995
/* Allocate a new server */
1107
996
mc.server = avahi_server_new(avahi_simple_poll_get
1108
997
(mc.simple_poll), &config, NULL,
1109
998
NULL, &error);
1110
999
1111
1000
/* Free the Avahi configuration data */
1112
1001
avahi_server_config_free(&config);
1113
1002
}
1114
1003
1115
1004
/* Check if creating the Avahi server object succeeded */
1116
if(mc.server == NULL) {
1005
if (mc.server == NULL) {
1117
1006
fprintf(stderr, "Failed to create Avahi server: %s\n",
1118
1007
avahi_strerror(error));
1119
1008
exitcode = EXIT_FAILURE;
1125
1014
AVAHI_PROTO_INET6,
1126
1015
"_mandos._tcp", NULL, 0,
1127
1016
browse_callback, &mc);
1128
if(sb == NULL) {
1017
if (sb == NULL) {
1129
1018
fprintf(stderr, "Failed to create service browser: %s\n",
1130
1019
avahi_strerror(avahi_server_errno(mc.server)));
1131
1020
exitcode = EXIT_FAILURE;
1133
1022
}
1134
1023
1135
1024
/* Run the main loop */
1136
1137
if(debug){
1025
1026
if (debug){
1138
1027
fprintf(stderr, "Starting Avahi loop search\n");
1139
1028
}
1140
1029
1141
1030
avahi_simple_poll_loop(mc.simple_poll);
1142
1031
1143
1032
end:
1144
1145
if(debug){
1033
1034
if (debug){
1146
1035
fprintf(stderr, "%s exiting\n", argv[0]);
1147
1036
}
1148
1037
1149
1038
/* Cleanup things */
1150
if(sb != NULL)
1039
if (sb != NULL)
1151
1040
avahi_s_service_browser_free(sb);
1152
1041
1153
if(mc.server != NULL)
1042
if (mc.server != NULL)
1154
1043
avahi_server_free(mc.server);
1155
1156
if(mc.simple_poll != NULL)
1044
1045
if (mc.simple_poll != NULL)
1157
1046
avahi_simple_poll_free(mc.simple_poll);
1158
1159
if(gnutls_initialized){
1047
free(pubkeyfile);
1048
free(seckeyfile);
1049
1050
if (gnutls_initalized){
1160
1051
gnutls_certificate_free_credentials(mc.cred);
1161
gnutls_global_deinit();
1162
gnutls_dh_params_deinit(mc.dh_params);
1163
}
1164
1165
if(gpgme_initialized){
1166
gpgme_release(mc.ctx);
1167
}
1168
1169
/* Removes the temp directory used by GPGME */
1170
if(tempdir_created){
1171
DIR *d;
1172
struct dirent *direntry;
1173
d = opendir(tempdir);
1174
if(d == NULL){
1175
if(errno != ENOENT){
1176
perror("opendir");
1177
}
1178
} else {
1179
while(true){
1180
direntry = readdir(d);
1181
if(direntry == NULL){
1182
break;
1183
}
1184
/* Skip "." and ".." */
1185
if(direntry->d_name[0] == '.'
1186
and (direntry->d_name[1] == '\0'
1187
or (direntry->d_name[1] == '.'
1188
and direntry->d_name[2] == '\0'))){
1189
continue;
1190
}
1191
char *fullname = NULL;
1192
ret = asprintf(&fullname, "%s/%s", tempdir,
1193
direntry->d_name);
1194
if(ret < 0){
1195
perror("asprintf");
1196
continue;
1197
}
1198
ret = remove(fullname);
1199
if(ret == -1){
1200
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1201
strerror(errno));
1202
}
1203
free(fullname);
1204
}
1205
closedir(d);
1206
}
1207
ret = rmdir(tempdir);
1208
if(ret == -1 and errno != ENOENT){
1209
perror("rmdir");
1210
}
1052
gnutls_global_deinit ();
1211
1053
}
1212
1054
1213
1055
return exitcode;
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0