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- Committer: Teddy Hogeborn
- Date: 2008-08-07 21:45:41 UTC
- Revision ID: teddy@fukt.bsnet.se-20080807214541-pyg8itw6kphz1dy5
* plugbasedclient.c: Renamed to "mandos-client.c". All users changed.
* plugins.d/mandosclient.c: Renamed to "plugins.d/password-request.c".
All users changed.
* plugins.d/passprompt.c: Renamed to "plugins.d/password-prompt.c".
All users changed.
* server.conf: Renamed to "mandos.conf". All users changed.
* server.py: Renamed to "mandos".
(daemon): Have default values for arguments. Caller changed.
* Makefile (distclean, mostlyclean, maintainer-clean): New aliases for
"clean".
(check, run-client, run-server): New.
* network-protocol.txt: New.
* plugins.d/mandosclient.c: Renamed to "plugins.d/password-request.c".
All users changed.
* plugins.d/passprompt.c: Renamed to "plugins.d/password-prompt.c".
All users changed.
* server.conf: Renamed to "mandos.conf". All users changed.
* server.py: Renamed to "mandos".
(daemon): Have default values for arguments. Caller changed.
* Makefile (distclean, mostlyclean, maintainer-clean): New aliases for
"clean".
(check, run-client, run-server): New.
* network-protocol.txt: New.
- files added:
- network-protocol.txt
- files removed:
- .bzr-builddeb
- debian
- debian/po
- files renamed:
- plugin-runner.c => mandos-client.c
- plugins.d/mandos-client.c => plugins.d/password-request.c
- 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
#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() */
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 */
64
44
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
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 */
45
SIOCSIFFLAGS */
77
46
78
/* Avahi */
79
/* All Avahi types, constants and functions
80
Avahi*, avahi_*,
81
AVAHI_* */
82
47
#include <avahi-core/core.h>
83
48
#include <avahi-core/lookup.h>
84
49
#include <avahi-core/log.h>
86
51
#include <avahi-common/malloc.h>
87
52
#include <avahi-common/error.h>
88
53
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 */
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 */
98
60
61
#include <unistd.h> /* close() */
62
#include <netinet/in.h>
63
#include <stdbool.h> /* true */
64
#include <string.h> /* memset */
65
#include <arpa/inet.h> /* inet_pton() */
66
#include <iso646.h> /* not */
67
#include <net/if.h> /* IF_NAMESIZE */
68
#include <argp.h> /* struct argp_option,
69
struct argp_state, struct argp,
70
argp_parse() */
99
71
/* GPGME */
100
#include <gpgme.h> /* All GPGME types, constants and
101
functions:
102
gpgme_*
103
GPGME_PROTOCOL_OpenPGP,
104
GPG_ERR_NO_* */
72
#include <errno.h> /* perror() */
73
#include <gpgme.h>
105
74
106
75
#define BUFFER_SIZE 256
107
76
108
#define PATHDIR "/conf/conf.d/mandos"
109
#define SECKEY "seckey.txt"
110
#define PUBKEY "pubkey.txt"
111
112
77
bool debug = false;
78
static const char *keydir = "/conf/conf.d/mandos";
113
79
static const char mandos_protocol_version[] = "1";
114
const char *argp_program_version = "mandos-client " VERSION;
80
const char *argp_program_version = "mandosclient 0.9";
115
81
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
116
82
117
83
/* Used for passing in values through the Avahi callback functions */
122
88
unsigned int dh_bits;
123
89
gnutls_dh_params_t dh_params;
124
90
const char *priority;
125
gpgme_ctx_t ctx;
126
91
} mandos_context;
127
92
128
93
/*
132
97
*/
133
98
size_t adjustbuffer(char **buffer, size_t buffer_length,
134
99
size_t buffer_capacity){
135
if(buffer_length + BUFFER_SIZE > buffer_capacity){
100
if (buffer_length + BUFFER_SIZE > buffer_capacity){
136
101
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
137
if(buffer == NULL){
102
if (buffer == NULL){
138
103
return 0;
139
104
}
140
105
buffer_capacity += BUFFER_SIZE;
143
108
}
144
109
145
110
/*
146
* Initialize GPGME.
111
* Decrypt OpenPGP data using keyrings in HOMEDIR.
112
* Returns -1 on error
147
113
*/
148
static bool init_gpgme(mandos_context *mc, const char *seckey,
149
const char *pubkey, const char *tempdir){
150
int ret;
114
static ssize_t pgp_packet_decrypt (const char *cryptotext,
115
size_t crypto_size,
116
char **plaintext,
117
const char *homedir){
118
gpgme_data_t dh_crypto, dh_plain;
119
gpgme_ctx_t ctx;
151
120
gpgme_error_t rc;
121
ssize_t ret;
122
size_t plaintext_capacity = 0;
123
ssize_t plaintext_length = 0;
152
124
gpgme_engine_info_t engine_info;
153
125
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
if (debug){
127
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
192
128
}
193
129
194
130
/* Init GPGME */
195
131
gpgme_check_version(NULL);
196
132
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
197
if(rc != GPG_ERR_NO_ERROR){
133
if (rc != GPG_ERR_NO_ERROR){
198
134
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
199
135
gpgme_strsource(rc), gpgme_strerror(rc));
200
return false;
136
return -1;
201
137
}
202
138
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
/* Set GPGME home directory for the OpenPGP engine only */
140
rc = gpgme_get_engine_info (&engine_info);
141
if (rc != GPG_ERR_NO_ERROR){
206
142
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
207
143
gpgme_strsource(rc), gpgme_strerror(rc));
208
return false;
144
return -1;
209
145
}
210
146
while(engine_info != NULL){
211
147
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
212
148
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
213
engine_info->file_name, tempdir);
149
engine_info->file_name, homedir);
214
150
break;
215
151
}
216
152
engine_info = engine_info->next;
217
153
}
218
154
if(engine_info == NULL){
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
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
156
return -1;
254
157
}
255
158
256
159
/* Create new GPGME data buffer from memory cryptotext */
257
160
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
258
161
0);
259
if(rc != GPG_ERR_NO_ERROR){
162
if (rc != GPG_ERR_NO_ERROR){
260
163
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
261
164
gpgme_strsource(rc), gpgme_strerror(rc));
262
165
return -1;
264
167
265
168
/* Create new empty GPGME data buffer for the plaintext */
266
169
rc = gpgme_data_new(&dh_plain);
267
if(rc != GPG_ERR_NO_ERROR){
170
if (rc != GPG_ERR_NO_ERROR){
268
171
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
269
172
gpgme_strsource(rc), gpgme_strerror(rc));
270
173
gpgme_data_release(dh_crypto);
271
174
return -1;
272
175
}
273
176
177
/* Create new GPGME "context" */
178
rc = gpgme_new(&ctx);
179
if (rc != GPG_ERR_NO_ERROR){
180
fprintf(stderr, "bad gpgme_new: %s: %s\n",
181
gpgme_strsource(rc), gpgme_strerror(rc));
182
plaintext_length = -1;
183
goto decrypt_end;
184
}
185
274
186
/* Decrypt data from the cryptotext data buffer to the plaintext
275
187
data buffer */
276
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
277
if(rc != GPG_ERR_NO_ERROR){
188
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
189
if (rc != GPG_ERR_NO_ERROR){
278
190
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
279
191
gpgme_strsource(rc), gpgme_strerror(rc));
280
192
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
}
309
193
goto decrypt_end;
310
194
}
311
195
313
197
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
314
198
}
315
199
200
if (debug){
201
gpgme_decrypt_result_t result;
202
result = gpgme_op_decrypt_result(ctx);
203
if (result == NULL){
204
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
205
} else {
206
fprintf(stderr, "Unsupported algorithm: %s\n",
207
result->unsupported_algorithm);
208
fprintf(stderr, "Wrong key usage: %d\n",
209
result->wrong_key_usage);
210
if(result->file_name != NULL){
211
fprintf(stderr, "File name: %s\n", result->file_name);
212
}
213
gpgme_recipient_t recipient;
214
recipient = result->recipients;
215
if(recipient){
216
while(recipient != NULL){
217
fprintf(stderr, "Public key algorithm: %s\n",
218
gpgme_pubkey_algo_name(recipient->pubkey_algo));
219
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
220
fprintf(stderr, "Secret key available: %s\n",
221
recipient->status == GPG_ERR_NO_SECKEY
222
? "No" : "Yes");
223
recipient = recipient->next;
224
}
225
}
226
}
227
}
228
316
229
/* Seek back to the beginning of the GPGME plaintext data buffer */
317
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
318
perror("gpgme_data_seek");
230
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
231
perror("pgpme_data_seek");
319
232
plaintext_length = -1;
320
233
goto decrypt_end;
321
234
}
325
238
plaintext_capacity = adjustbuffer(plaintext,
326
239
(size_t)plaintext_length,
327
240
plaintext_capacity);
328
if(plaintext_capacity == 0){
241
if (plaintext_capacity == 0){
329
242
perror("adjustbuffer");
330
243
plaintext_length = -1;
331
244
goto decrypt_end;
334
247
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
335
248
BUFFER_SIZE);
336
249
/* Print the data, if any */
337
if(ret == 0){
250
if (ret == 0){
338
251
/* EOF */
339
252
break;
340
253
}
345
258
}
346
259
plaintext_length += ret;
347
260
}
348
261
349
262
if(debug){
350
263
fprintf(stderr, "Decrypted password is: ");
351
264
for(ssize_t i = 0; i < plaintext_length; i++){
364
277
return plaintext_length;
365
278
}
366
279
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
static const char * safer_gnutls_strerror (int value) {
281
const char *ret = gnutls_strerror (value);
282
if (ret == NULL)
371
283
ret = "(unknown)";
372
284
return ret;
373
285
}
379
291
}
380
292
381
293
static int init_gnutls_global(mandos_context *mc,
382
const char *pubkeyfilename,
383
const char *seckeyfilename){
294
const char *pubkeyfile,
295
const char *seckeyfile){
384
296
int ret;
385
297
386
298
if(debug){
387
299
fprintf(stderr, "Initializing GnuTLS\n");
388
300
}
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
302
if ((ret = gnutls_global_init ())
303
!= GNUTLS_E_SUCCESS) {
304
fprintf (stderr, "GnuTLS global_init: %s\n",
305
safer_gnutls_strerror(ret));
394
306
return -1;
395
307
}
396
308
397
if(debug){
309
if (debug){
398
310
/* "Use a log level over 10 to enable all debugging options."
399
311
* - GnuTLS manual
400
312
*/
403
315
}
404
316
405
317
/* OpenPGP credentials */
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();
318
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
319
!= GNUTLS_E_SUCCESS) {
320
fprintf (stderr, "GnuTLS memory error: %s\n",
321
safer_gnutls_strerror(ret));
322
gnutls_global_deinit ();
414
323
return -1;
415
324
}
416
325
417
326
if(debug){
418
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
419
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
420
seckeyfilename);
327
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
328
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
329
seckeyfile);
421
330
}
422
331
423
332
ret = gnutls_certificate_set_openpgp_key_file
424
(mc->cred, pubkeyfilename, seckeyfilename,
425
GNUTLS_OPENPGP_FMT_BASE64);
426
if(ret != GNUTLS_E_SUCCESS) {
333
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
334
if (ret != GNUTLS_E_SUCCESS) {
427
335
fprintf(stderr,
428
336
"Error[%d] while reading the OpenPGP key pair ('%s',"
429
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
430
fprintf(stderr, "The GnuTLS error is: %s\n",
337
" '%s')\n", ret, pubkeyfile, seckeyfile);
338
fprintf(stdout, "The GnuTLS error is: %s\n",
431
339
safer_gnutls_strerror(ret));
432
340
goto globalfail;
433
341
}
434
342
435
343
/* GnuTLS server initialization */
436
344
ret = gnutls_dh_params_init(&mc->dh_params);
437
if(ret != GNUTLS_E_SUCCESS) {
438
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
439
" %s\n", safer_gnutls_strerror(ret));
345
if (ret != GNUTLS_E_SUCCESS) {
346
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
347
" %s\n", safer_gnutls_strerror(ret));
440
348
goto globalfail;
441
349
}
442
350
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
443
if(ret != GNUTLS_E_SUCCESS) {
444
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
445
safer_gnutls_strerror(ret));
351
if (ret != GNUTLS_E_SUCCESS) {
352
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
353
safer_gnutls_strerror(ret));
446
354
goto globalfail;
447
355
}
448
356
449
357
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
450
358
451
359
return 0;
452
360
453
361
globalfail:
454
455
gnutls_certificate_free_credentials(mc->cred);
456
gnutls_global_deinit();
457
gnutls_dh_params_deinit(mc->dh_params);
362
363
gnutls_certificate_free_credentials (mc->cred);
364
gnutls_global_deinit ();
458
365
return -1;
366
459
367
}
460
368
461
369
static int init_gnutls_session(mandos_context *mc,
463
371
int ret;
464
372
/* GnuTLS session creation */
465
373
ret = gnutls_init(session, GNUTLS_SERVER);
466
if(ret != GNUTLS_E_SUCCESS){
374
if (ret != GNUTLS_E_SUCCESS){
467
375
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
468
376
safer_gnutls_strerror(ret));
469
377
}
471
379
{
472
380
const char *err;
473
381
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
474
if(ret != GNUTLS_E_SUCCESS) {
382
if (ret != GNUTLS_E_SUCCESS) {
475
383
fprintf(stderr, "Syntax error at: %s\n", err);
476
384
fprintf(stderr, "GnuTLS error: %s\n",
477
385
safer_gnutls_strerror(ret));
478
gnutls_deinit(*session);
386
gnutls_deinit (*session);
479
387
return -1;
480
388
}
481
389
}
482
390
483
391
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
484
392
mc->cred);
485
if(ret != GNUTLS_E_SUCCESS) {
393
if (ret != GNUTLS_E_SUCCESS) {
486
394
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
487
395
safer_gnutls_strerror(ret));
488
gnutls_deinit(*session);
396
gnutls_deinit (*session);
489
397
return -1;
490
398
}
491
399
492
400
/* ignore client certificate if any. */
493
gnutls_certificate_server_set_request(*session,
494
GNUTLS_CERT_IGNORE);
401
gnutls_certificate_server_set_request (*session,
402
GNUTLS_CERT_IGNORE);
495
403
496
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
404
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
497
405
498
406
return 0;
499
407
}
507
415
AvahiIfIndex if_index,
508
416
mandos_context *mc){
509
417
int ret, tcp_sd;
510
ssize_t sret;
511
418
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
512
419
char *buffer = NULL;
513
420
char *decrypted_buffer;
519
426
char interface[IF_NAMESIZE];
520
427
gnutls_session_t session;
521
428
522
ret = init_gnutls_session(mc, &session);
523
if(ret != 0){
429
ret = init_gnutls_session (mc, &session);
430
if (ret != 0){
524
431
return -1;
525
432
}
526
433
527
434
if(debug){
528
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
529
"\n", ip, port);
435
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
436
ip, port);
530
437
}
531
438
532
439
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
534
441
perror("socket");
535
442
return -1;
536
443
}
537
444
538
445
if(debug){
539
446
if(if_indextoname((unsigned int)if_index, interface) == NULL){
540
447
perror("if_indextoname");
543
450
fprintf(stderr, "Binding to interface %s\n", interface);
544
451
}
545
452
546
memset(&to, 0, sizeof(to));
453
memset(&to,0,sizeof(to)); /* Spurious warning */
547
454
to.in6.sin6_family = AF_INET6;
548
455
/* It would be nice to have a way to detect if we were passed an
549
456
IPv4 address here. Now we assume an IPv6 address. */
550
457
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
551
if(ret < 0 ){
458
if (ret < 0 ){
552
459
perror("inet_pton");
553
460
return -1;
554
461
}
556
463
fprintf(stderr, "Bad address: %s\n", ip);
557
464
return -1;
558
465
}
559
to.in6.sin6_port = htons(port); /* Spurious warnings from
560
-Wconversion and
561
-Wunreachable-code */
466
to.in6.sin6_port = htons(port); /* Spurious warning */
562
467
563
468
to.in6.sin6_scope_id = (uint32_t)if_index;
564
469
565
470
if(debug){
566
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
567
port);
471
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
568
472
char addrstr[INET6_ADDRSTRLEN] = "";
569
473
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
570
474
sizeof(addrstr)) == NULL){
577
481
}
578
482
579
483
ret = connect(tcp_sd, &to.in, sizeof(to));
580
if(ret < 0){
484
if (ret < 0){
581
485
perror("connect");
582
486
return -1;
583
487
}
584
488
585
489
const char *out = mandos_protocol_version;
586
490
written = 0;
587
while(true){
491
while (true){
588
492
size_t out_size = strlen(out);
589
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
493
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
590
494
out_size - written));
591
if(ret == -1){
495
if (ret == -1){
592
496
perror("write");
593
497
retval = -1;
594
498
goto mandos_end;
597
501
if(written < out_size){
598
502
continue;
599
503
} else {
600
if(out == mandos_protocol_version){
504
if (out == mandos_protocol_version){
601
505
written = 0;
602
506
out = "\r\n";
603
507
} else {
605
509
}
606
510
}
607
511
}
608
512
609
513
if(debug){
610
514
fprintf(stderr, "Establishing TLS session with %s\n", ip);
611
515
}
612
516
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){
517
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
518
519
ret = gnutls_handshake (session);
520
521
if (ret != GNUTLS_E_SUCCESS){
620
522
if(debug){
621
523
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
622
gnutls_perror(ret);
524
gnutls_perror (ret);
623
525
}
624
526
retval = -1;
625
527
goto mandos_end;
631
533
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
632
534
ip);
633
535
}
634
536
635
537
while(true){
636
538
buffer_capacity = adjustbuffer(&buffer, buffer_length,
637
539
buffer_capacity);
638
if(buffer_capacity == 0){
540
if (buffer_capacity == 0){
639
541
perror("adjustbuffer");
640
542
retval = -1;
641
543
goto mandos_end;
642
544
}
643
545
644
sret = gnutls_record_recv(session, buffer+buffer_length,
645
BUFFER_SIZE);
646
if(sret == 0){
546
ret = gnutls_record_recv(session, buffer+buffer_length,
547
BUFFER_SIZE);
548
if (ret == 0){
647
549
break;
648
550
}
649
if(sret < 0){
650
switch(sret){
551
if (ret < 0){
552
switch(ret){
651
553
case GNUTLS_E_INTERRUPTED:
652
554
case GNUTLS_E_AGAIN:
653
555
break;
654
556
case GNUTLS_E_REHANDSHAKE:
655
do{
656
ret = gnutls_handshake(session);
657
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
658
if(ret < 0){
557
ret = gnutls_handshake (session);
558
if (ret < 0){
659
559
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
660
gnutls_perror(ret);
560
gnutls_perror (ret);
661
561
retval = -1;
662
562
goto mandos_end;
663
563
}
666
566
fprintf(stderr, "Unknown error while reading data from"
667
567
" encrypted session with Mandos server\n");
668
568
retval = -1;
669
gnutls_bye(session, GNUTLS_SHUT_RDWR);
569
gnutls_bye (session, GNUTLS_SHUT_RDWR);
670
570
goto mandos_end;
671
571
}
672
572
} else {
673
buffer_length += (size_t) sret;
573
buffer_length += (size_t) ret;
674
574
}
675
575
}
676
576
678
578
fprintf(stderr, "Closing TLS session\n");
679
579
}
680
580
681
gnutls_bye(session, GNUTLS_SHUT_RDWR);
581
gnutls_bye (session, GNUTLS_SHUT_RDWR);
682
582
683
if(buffer_length > 0){
684
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
583
if (buffer_length > 0){
584
decrypted_buffer_size = pgp_packet_decrypt(buffer,
685
585
buffer_length,
686
&decrypted_buffer);
687
if(decrypted_buffer_size >= 0){
586
&decrypted_buffer,
587
keydir);
588
if (decrypted_buffer_size >= 0){
688
589
written = 0;
689
590
while(written < (size_t) decrypted_buffer_size){
690
ret = (int)fwrite(decrypted_buffer + written, 1,
691
(size_t)decrypted_buffer_size - written,
692
stdout);
591
ret = (int)fwrite (decrypted_buffer + written, 1,
592
(size_t)decrypted_buffer_size - written,
593
stdout);
693
594
if(ret == 0 and ferror(stdout)){
694
595
if(debug){
695
596
fprintf(stderr, "Error writing encrypted data: %s\n",
704
605
} else {
705
606
retval = -1;
706
607
}
707
} else {
708
retval = -1;
709
608
}
710
609
711
610
/* Shutdown procedure */
712
611
713
612
mandos_end:
714
613
free(buffer);
715
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
716
if(ret == -1){
717
perror("close");
718
}
719
gnutls_deinit(session);
614
close(tcp_sd);
615
gnutls_deinit (session);
720
616
return retval;
721
617
}
722
618
735
631
flags,
736
632
void* userdata) {
737
633
mandos_context *mc = userdata;
738
assert(r);
634
assert(r); /* Spurious warning */
739
635
740
636
/* Called whenever a service has been resolved successfully or
741
637
timed out */
742
638
743
switch(event) {
639
switch (event) {
744
640
default:
745
641
case AVAHI_RESOLVER_FAILURE:
746
642
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
753
649
char ip[AVAHI_ADDRESS_STR_MAX];
754
650
avahi_address_snprint(ip, sizeof(ip), address);
755
651
if(debug){
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);
652
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
653
" port %d\n", name, host_name, ip, interface, port);
759
654
}
760
655
int ret = start_mandos_communication(ip, port, interface, mc);
761
if(ret == 0){
762
avahi_simple_poll_quit(mc->simple_poll);
656
if (ret == 0){
657
exit(EXIT_SUCCESS);
763
658
}
764
659
}
765
660
}
777
672
flags,
778
673
void* userdata) {
779
674
mandos_context *mc = userdata;
780
assert(b);
675
assert(b); /* Spurious warning */
781
676
782
677
/* Called whenever a new services becomes available on the LAN or
783
678
is removed from the LAN */
784
679
785
switch(event) {
680
switch (event) {
786
681
default:
787
682
case AVAHI_BROWSER_FAILURE:
788
683
797
692
the callback function is called the Avahi server will free the
798
693
resolver for us. */
799
694
800
if(!(avahi_s_service_resolver_new(mc->server, interface,
695
if (!(avahi_s_service_resolver_new(mc->server, interface,
801
696
protocol, name, type, domain,
802
697
AVAHI_PROTO_INET6, 0,
803
698
resolve_callback, mc)))
817
712
}
818
713
}
819
714
715
/* Combines file name and path and returns the malloced new
716
string. some sane checks could/should be added */
717
static const char *combinepath(const char *first, const char *second){
718
size_t f_len = strlen(first);
719
size_t s_len = strlen(second);
720
char *tmp = malloc(f_len + s_len + 2);
721
if (tmp == NULL){
722
return NULL;
723
}
724
if(f_len > 0){
725
memcpy(tmp, first, f_len); /* Spurious warning */
726
}
727
tmp[f_len] = '/';
728
if(s_len > 0){
729
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
730
}
731
tmp[f_len + 1 + s_len] = '\0';
732
return tmp;
733
}
734
735
820
736
int main(int argc, char *argv[]){
821
737
AvahiSServiceBrowser *sb = NULL;
822
738
int error;
823
739
int ret;
824
intmax_t tmpmax;
825
int numchars;
826
740
int exitcode = EXIT_SUCCESS;
827
741
const char *interface = "eth0";
828
742
struct ifreq network;
830
744
uid_t uid;
831
745
gid_t gid;
832
746
char *connect_to = NULL;
833
char tempdir[] = "/tmp/mandosXXXXXX";
834
747
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
835
const char *seckey = PATHDIR "/" SECKEY;
836
const char *pubkey = PATHDIR "/" PUBKEY;
837
748
const char *pubkeyfile = "pubkey.txt";
749
const char *seckeyfile = "seckey.txt";
838
750
mandos_context mc = { .simple_poll = NULL, .server = NULL,
839
.dh_bits = 1024, .priority = "SECURE256"
840
":!CTYPE-X.509:+CTYPE-OPENPGP" };
751
.dh_bits = 1024, .priority = "SECURE256"};
841
752
bool gnutls_initalized = false;
842
bool gpgme_initalized = false;
843
753
844
754
{
845
755
struct argp_option options[] = {
846
756
{ .name = "debug", .key = 128,
847
757
.doc = "Debug mode", .group = 3 },
848
758
{ .name = "connect", .key = 'c',
849
.arg = "ADDRESS:PORT",
850
.doc = "Connect directly to a specific Mandos server",
759
.arg = "IP",
760
.doc = "Connect directly to a sepcified mandos server",
851
761
.group = 1 },
852
762
{ .name = "interface", .key = 'i',
853
.arg = "NAME",
854
.doc = "Interface that will be used to search for Mandos"
855
" servers",
763
.arg = "INTERFACE",
764
.doc = "Interface that Avahi will conntect through",
765
.group = 1 },
766
{ .name = "keydir", .key = 'd',
767
.arg = "KEYDIR",
768
.doc = "Directory where the openpgp keyring is",
856
769
.group = 1 },
857
770
{ .name = "seckey", .key = 's',
858
.arg = "FILE",
859
.doc = "OpenPGP secret key file base name",
771
.arg = "SECKEY",
772
.doc = "Secret openpgp key for gnutls authentication",
860
773
.group = 1 },
861
774
{ .name = "pubkey", .key = 'p',
862
.arg = "FILE",
863
.doc = "OpenPGP public key file base name",
775
.arg = "PUBKEY",
776
.doc = "Public openpgp key for gnutls authentication",
864
777
.group = 2 },
865
778
{ .name = "dh-bits", .key = 129,
866
779
.arg = "BITS",
867
.doc = "Bit length of the prime number used in the"
868
" Diffie-Hellman key exchange",
780
.doc = "dh-bits to use in gnutls communication",
869
781
.group = 2 },
870
782
{ .name = "priority", .key = 130,
871
.arg = "STRING",
872
.doc = "GnuTLS priority string for the TLS handshake",
873
.group = 1 },
783
.arg = "PRIORITY",
784
.doc = "GNUTLS priority", .group = 1 },
874
785
{ .name = NULL }
875
786
};
787
876
788
877
error_t parse_opt(int key, char *arg,
878
struct argp_state *state) {
879
switch(key) {
880
case 128: /* --debug */
789
error_t parse_opt (int key, char *arg,
790
struct argp_state *state) {
791
/* Get the INPUT argument from `argp_parse', which we know is
792
a pointer to our plugin list pointer. */
793
switch (key) {
794
case 128:
881
795
debug = true;
882
796
break;
883
case 'c': /* --connect */
797
case 'c':
884
798
connect_to = arg;
885
799
break;
886
case 'i': /* --interface */
800
case 'i':
887
801
interface = arg;
888
802
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");
803
case 'd':
804
keydir = arg;
805
break;
806
case 's':
807
seckeyfile = arg;
808
break;
809
case 'p':
810
pubkeyfile = arg;
811
break;
812
case 129:
813
errno = 0;
814
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
815
if (errno){
816
perror("strtol");
900
817
exit(EXIT_FAILURE);
901
818
}
902
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
903
819
break;
904
case 130: /* --priority */
820
case 130:
905
821
mc.priority = arg;
906
822
break;
907
823
case ARGP_KEY_ARG:
908
argp_usage(state);
909
case ARGP_KEY_END:
824
argp_usage (state);
910
825
break;
826
case ARGP_KEY_END:
827
break;
911
828
default:
912
829
return ARGP_ERR_UNKNOWN;
913
830
}
914
831
return 0;
915
832
}
916
833
917
834
struct argp argp = { .options = options, .parser = parse_opt,
918
835
.args_doc = "",
919
836
.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
837
" passwords from mandos server" };
838
argp_parse (&argp, argc, argv, 0, 0, NULL);
839
}
840
841
pubkeyfile = combinepath(keydir, pubkeyfile);
842
if (pubkeyfile == NULL){
843
perror("combinepath");
844
exitcode = EXIT_FAILURE;
845
goto end;
846
}
847
848
seckeyfile = combinepath(keydir, seckeyfile);
849
if (seckeyfile == NULL){
850
perror("combinepath");
851
goto end;
852
}
853
854
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
855
if (ret == -1){
856
fprintf(stderr, "init_gnutls_global\n");
857
goto end;
858
} else {
859
gnutls_initalized = true;
860
}
861
959
862
uid = getuid();
960
863
gid = getgid();
961
864
962
865
ret = setuid(uid);
963
if(ret == -1){
866
if (ret == -1){
964
867
perror("setuid");
965
868
}
966
869
967
870
setgid(gid);
968
if(ret == -1){
871
if (ret == -1){
969
872
perror("setgid");
970
873
}
971
874
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
995
875
if_index = (AvahiIfIndex) if_nametoindex(interface);
996
876
if(if_index == 0){
997
877
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1007
887
exitcode = EXIT_FAILURE;
1008
888
goto end;
1009
889
}
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");
890
errno = 0;
891
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
892
if(errno){
893
perror("Bad port number");
1015
894
exitcode = EXIT_FAILURE;
1016
895
goto end;
1017
896
}
1018
port = (uint16_t)tmpmax;
1019
897
*address = '\0';
1020
898
address = connect_to;
1021
899
ret = start_mandos_communication(address, port, if_index, &mc);
1027
905
goto end;
1028
906
}
1029
907
1030
if(not debug){
908
/* If the interface is down, bring it up */
909
{
910
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
911
if(sd < 0) {
912
perror("socket");
913
exitcode = EXIT_FAILURE;
914
goto end;
915
}
916
strcpy(network.ifr_name, interface); /* Spurious warning */
917
ret = ioctl(sd, SIOCGIFFLAGS, &network);
918
if(ret == -1){
919
perror("ioctl SIOCGIFFLAGS");
920
exitcode = EXIT_FAILURE;
921
goto end;
922
}
923
if((network.ifr_flags & IFF_UP) == 0){
924
network.ifr_flags |= IFF_UP;
925
ret = ioctl(sd, SIOCSIFFLAGS, &network);
926
if(ret == -1){
927
perror("ioctl SIOCSIFFLAGS");
928
exitcode = EXIT_FAILURE;
929
goto end;
930
}
931
}
932
close(sd);
933
}
934
935
if (not debug){
1031
936
avahi_set_log_function(empty_log);
1032
937
}
1033
938
1036
941
1037
942
/* Allocate main Avahi loop object */
1038
943
mc.simple_poll = avahi_simple_poll_new();
1039
if(mc.simple_poll == NULL) {
944
if (mc.simple_poll == NULL) {
1040
945
fprintf(stderr, "Avahi: Failed to create simple poll"
1041
946
" object.\n");
1042
947
exitcode = EXIT_FAILURE;
1043
948
goto end;
1044
949
}
1045
950
1046
951
{
1047
952
AvahiServerConfig config;
1048
953
/* Do not publish any local Zeroconf records */
1051
956
config.publish_addresses = 0;
1052
957
config.publish_workstation = 0;
1053
958
config.publish_domain = 0;
1054
959
1055
960
/* Allocate a new server */
1056
961
mc.server = avahi_server_new(avahi_simple_poll_get
1057
962
(mc.simple_poll), &config, NULL,
1058
963
NULL, &error);
1059
964
1060
965
/* Free the Avahi configuration data */
1061
966
avahi_server_config_free(&config);
1062
967
}
1063
968
1064
969
/* Check if creating the Avahi server object succeeded */
1065
if(mc.server == NULL) {
970
if (mc.server == NULL) {
1066
971
fprintf(stderr, "Failed to create Avahi server: %s\n",
1067
972
avahi_strerror(error));
1068
973
exitcode = EXIT_FAILURE;
1074
979
AVAHI_PROTO_INET6,
1075
980
"_mandos._tcp", NULL, 0,
1076
981
browse_callback, &mc);
1077
if(sb == NULL) {
982
if (sb == NULL) {
1078
983
fprintf(stderr, "Failed to create service browser: %s\n",
1079
984
avahi_strerror(avahi_server_errno(mc.server)));
1080
985
exitcode = EXIT_FAILURE;
1082
987
}
1083
988
1084
989
/* Run the main loop */
1085
1086
if(debug){
990
991
if (debug){
1087
992
fprintf(stderr, "Starting Avahi loop search\n");
1088
993
}
1089
994
1090
995
avahi_simple_poll_loop(mc.simple_poll);
1091
996
1092
997
end:
1093
1094
if(debug){
998
999
if (debug){
1095
1000
fprintf(stderr, "%s exiting\n", argv[0]);
1096
1001
}
1097
1002
1098
1003
/* Cleanup things */
1099
if(sb != NULL)
1004
if (sb != NULL)
1100
1005
avahi_s_service_browser_free(sb);
1101
1006
1102
if(mc.server != NULL)
1007
if (mc.server != NULL)
1103
1008
avahi_server_free(mc.server);
1104
1105
if(mc.simple_poll != NULL)
1009
1010
if (mc.simple_poll != NULL)
1106
1011
avahi_simple_poll_free(mc.simple_poll);
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
1012
free(pubkeyfile);
1013
free(seckeyfile);
1014
1015
if (gnutls_initalized){
1016
gnutls_certificate_free_credentials (mc.cred);
1017
gnutls_global_deinit ();
1018
}
1019
1157
1020
return exitcode;
1158
1021
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0