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- Committer: Björn Påhlsson
- Date: 2008-08-03 17:24:47 UTC
- mfrom: (40 mandos)
- mto: (24.1.154 mandos) (237.4.3 mandos-release)
- mto: This revision was merged to the branch mainline in revision 41.
- Revision ID: belorn@braxen-20080803172447-uma248p1s4cbsp02
merge +
mandosclient
Added a adjustbuffer function.
mandosclient
Added a adjustbuffer function.
- files added:
- ca.pem
- files removed:
- .bzr-builddeb
- debian
- debian/po
- files renamed:
- plugin-runner.c => plugbasedclient.c
- plugins.d/mandos-client.c => plugins.d/mandosclient.c
- plugins.d/password-prompt.c => plugins.d/passprompt.c
- mandos.conf => server.conf
- mandos => server.py
- files modified:
- Makefile
added
removed
plugins.d/mandosclient.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() */
41
#include <stdint.h> /* uint16_t, uint32_t */
42
#include <stddef.h> /* NULL, size_t, ssize_t */
43
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
44
srand() */
45
#include <stdbool.h> /* bool, true */
46
#include <string.h> /* memset(), strcmp(), strlen(),
47
strerror(), asprintf(), strcpy() */
48
#include <sys/ioctl.h> /* ioctl */
49
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
50
sockaddr_in6, PF_INET6,
51
SOCK_STREAM, INET6_ADDRSTRLEN,
52
uid_t, gid_t, open(), opendir(),
53
DIR */
54
#include <sys/stat.h> /* open() */
55
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
56
struct in6_addr, inet_pton(),
57
connect() */
58
#include <fcntl.h> /* open() */
59
#include <dirent.h> /* opendir(), struct dirent, readdir()
60
*/
61
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
62
#include <assert.h> /* assert() */
63
#include <errno.h> /* perror(), errno */
64
#include <time.h> /* time() */
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 */
65
44
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
66
SIOCSIFFLAGS, if_indextoname(),
67
if_nametoindex(), IF_NAMESIZE */
68
#include <netinet/in.h>
69
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
70
getuid(), getgid(), setuid(),
71
setgid() */
72
#include <arpa/inet.h> /* inet_pton(), htons */
73
#include <iso646.h> /* not, and, or */
74
#include <argp.h> /* struct argp_option, error_t, struct
75
argp_state, struct argp,
76
argp_parse(), ARGP_KEY_ARG,
77
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
45
SIOCSIFFLAGS */
78
46
79
/* Avahi */
80
/* All Avahi types, constants and functions
81
Avahi*, avahi_*,
82
AVAHI_* */
83
47
#include <avahi-core/core.h>
84
48
#include <avahi-core/lookup.h>
85
49
#include <avahi-core/log.h>
87
51
#include <avahi-common/malloc.h>
88
52
#include <avahi-common/error.h>
89
53
90
/* GnuTLS */
91
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
92
functions:
93
gnutls_*
94
init_gnutls_session(),
95
GNUTLS_* */
96
#include <gnutls/openpgp.h>
97
/* gnutls_certificate_set_openpgp_key_file(),
98
GNUTLS_OPENPGP_FMT_BASE64 */
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 */
99
68
100
69
/* GPGME */
101
#include <gpgme.h> /* All GPGME types, constants and
102
functions:
103
gpgme_*
104
GPGME_PROTOCOL_OpenPGP,
105
GPG_ERR_NO_* */
70
#include <errno.h> /* perror() */
71
#include <gpgme.h>
72
73
/* getopt_long */
74
#include <getopt.h>
106
75
107
76
#define BUFFER_SIZE 256
108
77
109
#define PATHDIR "/conf/conf.d/mandos"
110
#define SECKEY "seckey.txt"
111
#define PUBKEY "pubkey.txt"
78
static const char *keydir = "/conf/conf.d/mandos";
79
static const char *pubkeyfile = "pubkey.txt";
80
static const char *seckeyfile = "seckey.txt";
112
81
113
82
bool debug = false;
114
static const char mandos_protocol_version[] = "1";
115
const char *argp_program_version = "mandos-client " VERSION;
116
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
117
118
/* Used for passing in values through the Avahi callback functions */
83
84
const char mandos_protocol_version[] = "1";
85
86
/* Used for passing in values through all the callback functions */
119
87
typedef struct {
120
88
AvahiSimplePoll *simple_poll;
121
89
AvahiServer *server;
122
90
gnutls_certificate_credentials_t cred;
123
91
unsigned int dh_bits;
124
gnutls_dh_params_t dh_params;
125
92
const char *priority;
126
gpgme_ctx_t ctx;
127
93
} mandos_context;
128
94
129
/*
130
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
131
* "buffer_capacity" is how much is currently allocated,
132
* "buffer_length" is how much is already used.
133
*/
134
95
size_t adjustbuffer(char **buffer, size_t buffer_length,
135
96
size_t buffer_capacity){
136
if(buffer_length + BUFFER_SIZE > buffer_capacity){
97
if (buffer_length + BUFFER_SIZE > buffer_capacity){
137
98
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
138
if(buffer == NULL){
99
if (buffer == NULL){
139
100
return 0;
140
101
}
141
102
buffer_capacity += BUFFER_SIZE;
144
105
}
145
106
146
107
/*
147
* Initialize GPGME.
108
* Decrypt OpenPGP data using keyrings in HOMEDIR.
109
* Returns -1 on error
148
110
*/
149
static bool init_gpgme(mandos_context *mc, const char *seckey,
150
const char *pubkey, const char *tempdir){
151
int ret;
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;
152
117
gpgme_error_t rc;
118
ssize_t ret;
119
size_t plaintext_capacity = 0;
120
ssize_t plaintext_length = 0;
153
121
gpgme_engine_info_t engine_info;
154
122
155
156
/*
157
* Helper function to insert pub and seckey to the engine keyring.
158
*/
159
bool import_key(const char *filename){
160
int fd;
161
gpgme_data_t pgp_data;
162
163
fd = (int)TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
164
if(fd == -1){
165
perror("open");
166
return false;
167
}
168
169
rc = gpgme_data_new_from_fd(&pgp_data, fd);
170
if(rc != GPG_ERR_NO_ERROR){
171
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
172
gpgme_strsource(rc), gpgme_strerror(rc));
173
return false;
174
}
175
176
rc = gpgme_op_import(mc->ctx, pgp_data);
177
if(rc != GPG_ERR_NO_ERROR){
178
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
179
gpgme_strsource(rc), gpgme_strerror(rc));
180
return false;
181
}
182
183
ret = (int)TEMP_FAILURE_RETRY(close(fd));
184
if(ret == -1){
185
perror("close");
186
}
187
gpgme_data_release(pgp_data);
188
return true;
189
}
190
191
if(debug){
192
fprintf(stderr, "Initialize gpgme\n");
123
if (debug){
124
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
193
125
}
194
126
195
127
/* Init GPGME */
196
128
gpgme_check_version(NULL);
197
129
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
198
if(rc != GPG_ERR_NO_ERROR){
130
if (rc != GPG_ERR_NO_ERROR){
199
131
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
200
132
gpgme_strsource(rc), gpgme_strerror(rc));
201
return false;
133
return -1;
202
134
}
203
135
204
/* Set GPGME home directory for the OpenPGP engine only */
205
rc = gpgme_get_engine_info(&engine_info);
206
if(rc != GPG_ERR_NO_ERROR){
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){
207
139
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
208
140
gpgme_strsource(rc), gpgme_strerror(rc));
209
return false;
141
return -1;
210
142
}
211
143
while(engine_info != NULL){
212
144
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
213
145
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
214
engine_info->file_name, tempdir);
146
engine_info->file_name, homedir);
215
147
break;
216
148
}
217
149
engine_info = engine_info->next;
218
150
}
219
151
if(engine_info == NULL){
220
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
221
return false;
222
}
223
224
/* Create new GPGME "context" */
225
rc = gpgme_new(&(mc->ctx));
226
if(rc != GPG_ERR_NO_ERROR){
227
fprintf(stderr, "bad gpgme_new: %s: %s\n",
228
gpgme_strsource(rc), gpgme_strerror(rc));
229
return false;
230
}
231
232
if(not import_key(pubkey) or not import_key(seckey)){
233
return false;
234
}
235
236
return true;
237
}
238
239
/*
240
* Decrypt OpenPGP data.
241
* Returns -1 on error
242
*/
243
static ssize_t pgp_packet_decrypt(const mandos_context *mc,
244
const char *cryptotext,
245
size_t crypto_size,
246
char **plaintext){
247
gpgme_data_t dh_crypto, dh_plain;
248
gpgme_error_t rc;
249
ssize_t ret;
250
size_t plaintext_capacity = 0;
251
ssize_t plaintext_length = 0;
252
253
if(debug){
254
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
152
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
153
return -1;
255
154
}
256
155
257
156
/* Create new GPGME data buffer from memory cryptotext */
258
157
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
259
158
0);
260
if(rc != GPG_ERR_NO_ERROR){
159
if (rc != GPG_ERR_NO_ERROR){
261
160
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
262
161
gpgme_strsource(rc), gpgme_strerror(rc));
263
162
return -1;
265
164
266
165
/* Create new empty GPGME data buffer for the plaintext */
267
166
rc = gpgme_data_new(&dh_plain);
268
if(rc != GPG_ERR_NO_ERROR){
167
if (rc != GPG_ERR_NO_ERROR){
269
168
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
270
169
gpgme_strsource(rc), gpgme_strerror(rc));
271
170
gpgme_data_release(dh_crypto);
272
171
return -1;
273
172
}
274
173
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
275
183
/* Decrypt data from the cryptotext data buffer to the plaintext
276
184
data buffer */
277
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
278
if(rc != GPG_ERR_NO_ERROR){
185
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
186
if (rc != GPG_ERR_NO_ERROR){
279
187
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
280
188
gpgme_strsource(rc), gpgme_strerror(rc));
281
189
plaintext_length = -1;
282
if(debug){
283
gpgme_decrypt_result_t result;
284
result = gpgme_op_decrypt_result(mc->ctx);
285
if(result == NULL){
286
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
287
} else {
288
fprintf(stderr, "Unsupported algorithm: %s\n",
289
result->unsupported_algorithm);
290
fprintf(stderr, "Wrong key usage: %u\n",
291
result->wrong_key_usage);
292
if(result->file_name != NULL){
293
fprintf(stderr, "File name: %s\n", result->file_name);
294
}
295
gpgme_recipient_t recipient;
296
recipient = result->recipients;
297
if(recipient){
298
while(recipient != NULL){
299
fprintf(stderr, "Public key algorithm: %s\n",
300
gpgme_pubkey_algo_name(recipient->pubkey_algo));
301
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
302
fprintf(stderr, "Secret key available: %s\n",
303
recipient->status == GPG_ERR_NO_SECKEY
304
? "No" : "Yes");
305
recipient = recipient->next;
306
}
307
}
308
}
309
}
310
190
goto decrypt_end;
311
191
}
312
192
314
194
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
315
195
}
316
196
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
317
226
/* Seek back to the beginning of the GPGME plaintext data buffer */
318
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
319
perror("gpgme_data_seek");
227
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
228
perror("pgpme_data_seek");
320
229
plaintext_length = -1;
321
230
goto decrypt_end;
322
231
}
323
232
324
233
*plaintext = NULL;
325
234
while(true){
326
plaintext_capacity = adjustbuffer(plaintext,
327
(size_t)plaintext_length,
235
plaintext_capacity = adjustbuffer(plaintext, (size_t)plaintext_length,
328
236
plaintext_capacity);
329
if(plaintext_capacity == 0){
237
if (plaintext_capacity == 0){
330
238
perror("adjustbuffer");
331
239
plaintext_length = -1;
332
240
goto decrypt_end;
335
243
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
336
244
BUFFER_SIZE);
337
245
/* Print the data, if any */
338
if(ret == 0){
246
if (ret == 0){
339
247
/* EOF */
340
248
break;
341
249
}
346
254
}
347
255
plaintext_length += ret;
348
256
}
349
257
350
258
if(debug){
351
259
fprintf(stderr, "Decrypted password is: ");
352
260
for(ssize_t i = 0; i < plaintext_length; i++){
365
273
return plaintext_length;
366
274
}
367
275
368
static const char * safer_gnutls_strerror(int value) {
369
const char *ret = gnutls_strerror(value); /* Spurious warning from
370
-Wunreachable-code */
371
if(ret == NULL)
276
static const char * safer_gnutls_strerror (int value) {
277
const char *ret = gnutls_strerror (value);
278
if (ret == NULL)
372
279
ret = "(unknown)";
373
280
return ret;
374
281
}
379
286
fprintf(stderr, "GnuTLS: %s", string);
380
287
}
381
288
382
static int init_gnutls_global(mandos_context *mc,
383
const char *pubkeyfilename,
384
const char *seckeyfilename){
289
static int initgnutls(mandos_context *mc, gnutls_session_t *session,
290
gnutls_dh_params_t *dh_params){
385
291
int ret;
386
292
387
293
if(debug){
388
294
fprintf(stderr, "Initializing GnuTLS\n");
389
295
}
390
391
ret = gnutls_global_init();
392
if(ret != GNUTLS_E_SUCCESS) {
393
fprintf(stderr, "GnuTLS global_init: %s\n",
394
safer_gnutls_strerror(ret));
296
297
if ((ret = gnutls_global_init ())
298
!= GNUTLS_E_SUCCESS) {
299
fprintf (stderr, "GnuTLS global_init: %s\n",
300
safer_gnutls_strerror(ret));
395
301
return -1;
396
302
}
397
303
398
if(debug){
304
if (debug){
399
305
/* "Use a log level over 10 to enable all debugging options."
400
306
* - GnuTLS manual
401
307
*/
404
310
}
405
311
406
312
/* OpenPGP credentials */
407
gnutls_certificate_allocate_credentials(&mc->cred);
408
if(ret != GNUTLS_E_SUCCESS){
409
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
410
* from
411
* -Wunreachable-code
412
*/
413
safer_gnutls_strerror(ret));
414
gnutls_global_deinit();
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));
415
317
return -1;
416
318
}
417
319
418
320
if(debug){
419
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
420
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
421
seckeyfilename);
321
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
322
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
323
seckeyfile);
422
324
}
423
325
424
326
ret = gnutls_certificate_set_openpgp_key_file
425
(mc->cred, pubkeyfilename, seckeyfilename,
426
GNUTLS_OPENPGP_FMT_BASE64);
427
if(ret != GNUTLS_E_SUCCESS) {
327
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
328
if (ret != GNUTLS_E_SUCCESS) {
428
329
fprintf(stderr,
429
330
"Error[%d] while reading the OpenPGP key pair ('%s',"
430
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
431
fprintf(stderr, "The GnuTLS error is: %s\n",
331
" '%s')\n", ret, pubkeyfile, seckeyfile);
332
fprintf(stdout, "The GnuTLS error is: %s\n",
432
333
safer_gnutls_strerror(ret));
433
goto globalfail;
334
return -1;
434
335
}
435
336
436
337
/* GnuTLS server initialization */
437
ret = gnutls_dh_params_init(&mc->dh_params);
438
if(ret != GNUTLS_E_SUCCESS) {
439
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
440
" %s\n", safer_gnutls_strerror(ret));
441
goto globalfail;
442
}
443
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
444
if(ret != GNUTLS_E_SUCCESS) {
445
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
446
safer_gnutls_strerror(ret));
447
goto globalfail;
448
}
449
450
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
451
452
return 0;
453
454
globalfail:
455
456
gnutls_certificate_free_credentials(mc->cred);
457
gnutls_global_deinit();
458
gnutls_dh_params_deinit(mc->dh_params);
459
return -1;
460
}
461
462
static int init_gnutls_session(mandos_context *mc,
463
gnutls_session_t *session){
464
int ret;
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
465
353
/* GnuTLS session creation */
466
354
ret = gnutls_init(session, GNUTLS_SERVER);
467
if(ret != GNUTLS_E_SUCCESS){
355
if (ret != GNUTLS_E_SUCCESS){
468
356
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
469
357
safer_gnutls_strerror(ret));
470
358
}
472
360
{
473
361
const char *err;
474
362
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
475
if(ret != GNUTLS_E_SUCCESS) {
363
if (ret != GNUTLS_E_SUCCESS) {
476
364
fprintf(stderr, "Syntax error at: %s\n", err);
477
365
fprintf(stderr, "GnuTLS error: %s\n",
478
366
safer_gnutls_strerror(ret));
479
gnutls_deinit(*session);
480
367
return -1;
481
368
}
482
369
}
483
370
484
371
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
485
372
mc->cred);
486
if(ret != GNUTLS_E_SUCCESS) {
373
if (ret != GNUTLS_E_SUCCESS) {
487
374
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
488
375
safer_gnutls_strerror(ret));
489
gnutls_deinit(*session);
490
376
return -1;
491
377
}
492
378
493
379
/* ignore client certificate if any. */
494
gnutls_certificate_server_set_request(*session,
495
GNUTLS_CERT_IGNORE);
380
gnutls_certificate_server_set_request (*session,
381
GNUTLS_CERT_IGNORE);
496
382
497
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
383
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
498
384
499
385
return 0;
500
386
}
508
394
AvahiIfIndex if_index,
509
395
mandos_context *mc){
510
396
int ret, tcp_sd;
511
ssize_t sret;
512
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
397
struct sockaddr_in6 to;
513
398
char *buffer = NULL;
514
399
char *decrypted_buffer;
515
400
size_t buffer_length = 0;
519
404
int retval = 0;
520
405
char interface[IF_NAMESIZE];
521
406
gnutls_session_t session;
407
gnutls_dh_params_t dh_params;
522
408
523
ret = init_gnutls_session(mc, &session);
524
if(ret != 0){
409
ret = initgnutls (mc, &session, &dh_params);
410
if (ret != 0){
525
411
return -1;
526
412
}
527
413
528
414
if(debug){
529
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
530
"\n", ip, port);
415
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
416
ip, port);
531
417
}
532
418
533
419
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
535
421
perror("socket");
536
422
return -1;
537
423
}
538
424
539
425
if(debug){
540
426
if(if_indextoname((unsigned int)if_index, interface) == NULL){
541
427
perror("if_indextoname");
544
430
fprintf(stderr, "Binding to interface %s\n", interface);
545
431
}
546
432
547
memset(&to, 0, sizeof(to));
548
to.in6.sin6_family = AF_INET6;
433
memset(&to,0,sizeof(to)); /* Spurious warning */
434
to.sin6_family = AF_INET6;
549
435
/* It would be nice to have a way to detect if we were passed an
550
436
IPv4 address here. Now we assume an IPv6 address. */
551
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
552
if(ret < 0 ){
437
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
438
if (ret < 0 ){
553
439
perror("inet_pton");
554
440
return -1;
555
441
}
557
443
fprintf(stderr, "Bad address: %s\n", ip);
558
444
return -1;
559
445
}
560
to.in6.sin6_port = htons(port); /* Spurious warnings from
561
-Wconversion and
562
-Wunreachable-code */
446
to.sin6_port = htons(port); /* Spurious warning */
563
447
564
to.in6.sin6_scope_id = (uint32_t)if_index;
448
to.sin6_scope_id = (uint32_t)if_index;
565
449
566
450
if(debug){
567
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
568
port);
451
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
569
452
char addrstr[INET6_ADDRSTRLEN] = "";
570
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
453
if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr,
571
454
sizeof(addrstr)) == NULL){
572
455
perror("inet_ntop");
573
456
} else {
577
460
}
578
461
}
579
462
580
ret = connect(tcp_sd, &to.in, sizeof(to));
581
if(ret < 0){
463
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
464
if (ret < 0){
582
465
perror("connect");
583
466
return -1;
584
467
}
585
468
586
469
const char *out = mandos_protocol_version;
587
470
written = 0;
588
while(true){
471
while (true){
589
472
size_t out_size = strlen(out);
590
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
473
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
591
474
out_size - written));
592
if(ret == -1){
475
if (ret == -1){
593
476
perror("write");
594
477
retval = -1;
595
478
goto mandos_end;
598
481
if(written < out_size){
599
482
continue;
600
483
} else {
601
if(out == mandos_protocol_version){
484
if (out == mandos_protocol_version){
602
485
written = 0;
603
486
out = "\r\n";
604
487
} else {
606
489
}
607
490
}
608
491
}
609
492
610
493
if(debug){
611
494
fprintf(stderr, "Establishing TLS session with %s\n", ip);
612
495
}
613
496
614
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
615
616
do{
617
ret = gnutls_handshake(session);
618
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
619
620
if(ret != GNUTLS_E_SUCCESS){
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){
621
502
if(debug){
622
503
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
623
gnutls_perror(ret);
504
gnutls_perror (ret);
624
505
}
625
506
retval = -1;
626
507
goto mandos_end;
632
513
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
633
514
ip);
634
515
}
635
516
636
517
while(true){
637
buffer_capacity = adjustbuffer(&buffer, buffer_length,
638
buffer_capacity);
639
if(buffer_capacity == 0){
518
buffer_capacity = adjustbuffer(&buffer, buffer_length, buffer_capacity);
519
if (buffer_capacity == 0){
640
520
perror("adjustbuffer");
641
521
retval = -1;
642
522
goto mandos_end;
643
523
}
644
524
645
sret = gnutls_record_recv(session, buffer+buffer_length,
646
BUFFER_SIZE);
647
if(sret == 0){
525
ret = gnutls_record_recv(session, buffer+buffer_length,
526
BUFFER_SIZE);
527
if (ret == 0){
648
528
break;
649
529
}
650
if(sret < 0){
651
switch(sret){
530
if (ret < 0){
531
switch(ret){
652
532
case GNUTLS_E_INTERRUPTED:
653
533
case GNUTLS_E_AGAIN:
654
534
break;
655
535
case GNUTLS_E_REHANDSHAKE:
656
do{
657
ret = gnutls_handshake(session);
658
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
659
if(ret < 0){
536
ret = gnutls_handshake (session);
537
if (ret < 0){
660
538
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
661
gnutls_perror(ret);
539
gnutls_perror (ret);
662
540
retval = -1;
663
541
goto mandos_end;
664
542
}
667
545
fprintf(stderr, "Unknown error while reading data from"
668
546
" encrypted session with Mandos server\n");
669
547
retval = -1;
670
gnutls_bye(session, GNUTLS_SHUT_RDWR);
548
gnutls_bye (session, GNUTLS_SHUT_RDWR);
671
549
goto mandos_end;
672
550
}
673
551
} else {
674
buffer_length += (size_t) sret;
552
buffer_length += (size_t) ret;
675
553
}
676
554
}
677
555
679
557
fprintf(stderr, "Closing TLS session\n");
680
558
}
681
559
682
gnutls_bye(session, GNUTLS_SHUT_RDWR);
560
gnutls_bye (session, GNUTLS_SHUT_RDWR);
683
561
684
if(buffer_length > 0){
685
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
562
if (buffer_length > 0){
563
decrypted_buffer_size = pgp_packet_decrypt(buffer,
686
564
buffer_length,
687
&decrypted_buffer);
688
if(decrypted_buffer_size >= 0){
565
&decrypted_buffer,
566
keydir);
567
if (decrypted_buffer_size >= 0){
689
568
written = 0;
690
569
while(written < (size_t) decrypted_buffer_size){
691
ret = (int)fwrite(decrypted_buffer + written, 1,
692
(size_t)decrypted_buffer_size - written,
693
stdout);
570
ret = (int)fwrite (decrypted_buffer + written, 1,
571
(size_t)decrypted_buffer_size - written,
572
stdout);
694
573
if(ret == 0 and ferror(stdout)){
695
574
if(debug){
696
575
fprintf(stderr, "Error writing encrypted data: %s\n",
705
584
} else {
706
585
retval = -1;
707
586
}
708
} else {
709
retval = -1;
710
587
}
711
588
712
589
/* Shutdown procedure */
713
590
714
591
mandos_end:
715
592
free(buffer);
716
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
717
if(ret == -1){
718
perror("close");
719
}
720
gnutls_deinit(session);
593
close(tcp_sd);
594
gnutls_deinit (session);
595
gnutls_certificate_free_credentials (mc->cred);
596
gnutls_global_deinit ();
721
597
return retval;
722
598
}
723
599
736
612
flags,
737
613
void* userdata) {
738
614
mandos_context *mc = userdata;
739
assert(r);
615
assert(r); /* Spurious warning */
740
616
741
617
/* Called whenever a service has been resolved successfully or
742
618
timed out */
743
619
744
switch(event) {
620
switch (event) {
745
621
default:
746
622
case AVAHI_RESOLVER_FAILURE:
747
623
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
754
630
char ip[AVAHI_ADDRESS_STR_MAX];
755
631
avahi_address_snprint(ip, sizeof(ip), address);
756
632
if(debug){
757
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
758
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
759
ip, (intmax_t)interface, port);
633
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
634
" port %d\n", name, host_name, ip, interface, port);
760
635
}
761
636
int ret = start_mandos_communication(ip, port, interface, mc);
762
if(ret == 0){
763
avahi_simple_poll_quit(mc->simple_poll);
637
if (ret == 0){
638
exit(EXIT_SUCCESS);
764
639
}
765
640
}
766
641
}
778
653
flags,
779
654
void* userdata) {
780
655
mandos_context *mc = userdata;
781
assert(b);
656
assert(b); /* Spurious warning */
782
657
783
658
/* Called whenever a new services becomes available on the LAN or
784
659
is removed from the LAN */
785
660
786
switch(event) {
661
switch (event) {
787
662
default:
788
663
case AVAHI_BROWSER_FAILURE:
789
664
798
673
the callback function is called the Avahi server will free the
799
674
resolver for us. */
800
675
801
if(!(avahi_s_service_resolver_new(mc->server, interface,
676
if (!(avahi_s_service_resolver_new(mc->server, interface,
802
677
protocol, name, type, domain,
803
678
AVAHI_PROTO_INET6, 0,
804
679
resolve_callback, mc)))
818
693
}
819
694
}
820
695
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
821
717
int main(int argc, char *argv[]){
822
718
AvahiSServiceBrowser *sb = NULL;
823
719
int error;
824
720
int ret;
825
intmax_t tmpmax;
826
int numchars;
827
721
int exitcode = EXIT_SUCCESS;
828
722
const char *interface = "eth0";
829
723
struct ifreq network;
830
724
int sd;
831
uid_t uid;
832
gid_t gid;
833
725
char *connect_to = NULL;
834
char tempdir[] = "/tmp/mandosXXXXXX";
835
bool tempdir_created = false;
836
726
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
837
const char *seckey = PATHDIR "/" SECKEY;
838
const char *pubkey = PATHDIR "/" PUBKEY;
839
840
727
mandos_context mc = { .simple_poll = NULL, .server = NULL,
841
.dh_bits = 1024, .priority = "SECURE256"
842
":!CTYPE-X.509:+CTYPE-OPENPGP" };
843
bool gnutls_initialized = false;
844
bool gpgme_initialized = false;
728
.dh_bits = 1024, .priority = "SECURE256"};
845
729
846
730
{
847
struct argp_option options[] = {
848
{ .name = "debug", .key = 128,
849
.doc = "Debug mode", .group = 3 },
850
{ .name = "connect", .key = 'c',
851
.arg = "ADDRESS:PORT",
852
.doc = "Connect directly to a specific Mandos server",
853
.group = 1 },
854
{ .name = "interface", .key = 'i',
855
.arg = "NAME",
856
.doc = "Interface that will be used to search for Mandos"
857
" servers",
858
.group = 1 },
859
{ .name = "seckey", .key = 's',
860
.arg = "FILE",
861
.doc = "OpenPGP secret key file base name",
862
.group = 1 },
863
{ .name = "pubkey", .key = 'p',
864
.arg = "FILE",
865
.doc = "OpenPGP public key file base name",
866
.group = 2 },
867
{ .name = "dh-bits", .key = 129,
868
.arg = "BITS",
869
.doc = "Bit length of the prime number used in the"
870
" Diffie-Hellman key exchange",
871
.group = 2 },
872
{ .name = "priority", .key = 130,
873
.arg = "STRING",
874
.doc = "GnuTLS priority string for the TLS handshake",
875
.group = 1 },
876
{ .name = NULL }
877
};
878
879
error_t parse_opt(int key, char *arg,
880
struct argp_state *state) {
881
switch(key) {
882
case 128: /* --debug */
883
debug = true;
884
break;
885
case 'c': /* --connect */
886
connect_to = arg;
887
break;
888
case 'i': /* --interface */
889
interface = arg;
890
break;
891
case 's': /* --seckey */
892
seckey = arg;
893
break;
894
case 'p': /* --pubkey */
895
pubkey = arg;
896
break;
897
case 129: /* --dh-bits */
898
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
899
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
900
or arg[numchars] != '\0'){
901
fprintf(stderr, "Bad number of DH bits\n");
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");
902
776
exit(EXIT_FAILURE);
903
777
}
904
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
905
break;
906
case 130: /* --priority */
907
mc.priority = arg;
908
break;
909
case ARGP_KEY_ARG:
910
argp_usage(state);
911
case ARGP_KEY_END:
912
break;
778
break;
779
case 'P':
780
mc.priority = optarg;
781
break;
782
case '?':
913
783
default:
914
return ARGP_ERR_UNKNOWN;
784
/* getopt_long() has already printed a message about the
785
unrcognized option, so just exit. */
786
exit(EXIT_FAILURE);
915
787
}
916
return 0;
917
}
918
919
struct argp argp = { .options = options, .parser = parse_opt,
920
.args_doc = "",
921
.doc = "Mandos client -- Get and decrypt"
922
" passwords from a Mandos server" };
923
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
924
if(ret == ARGP_ERR_UNKNOWN){
925
fprintf(stderr, "Unknown error while parsing arguments\n");
926
exitcode = EXIT_FAILURE;
927
goto end;
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;
804
}
805
806
if_index = (AvahiIfIndex) if_nametoindex(interface);
807
if(if_index == 0){
808
fprintf(stderr, "No such interface: \"%s\"\n", interface);
809
exit(EXIT_FAILURE);
810
}
811
812
if(connect_to != NULL){
813
/* Connect directly, do not use Zeroconf */
814
/* (Mainly meant for debugging) */
815
char *address = strrchr(connect_to, ':');
816
if(address == NULL){
817
fprintf(stderr, "No colon in address\n");
818
exit(EXIT_FAILURE);
819
}
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);
825
}
826
*address = '\0';
827
address = connect_to;
828
ret = start_mandos_communication(address, port, if_index, &mc);
829
if(ret < 0){
830
exit(EXIT_FAILURE);
831
} else {
832
exit(EXIT_SUCCESS);
928
833
}
929
834
}
930
835
936
841
exitcode = EXIT_FAILURE;
937
842
goto end;
938
843
}
939
strcpy(network.ifr_name, interface);
844
strcpy(network.ifr_name, interface); /* Spurious warning */
940
845
ret = ioctl(sd, SIOCGIFFLAGS, &network);
941
846
if(ret == -1){
942
847
perror("ioctl SIOCGIFFLAGS");
952
857
goto end;
953
858
}
954
859
}
955
ret = (int)TEMP_FAILURE_RETRY(close(sd));
956
if(ret == -1){
957
perror("close");
958
}
959
}
960
961
uid = getuid();
962
gid = getgid();
963
964
setgid(gid);
965
if(ret == -1){
966
perror("setgid");
967
}
968
969
ret = setuid(uid);
970
if(ret == -1){
971
perror("setuid");
972
}
973
974
ret = init_gnutls_global(&mc, pubkey, seckey);
975
if(ret == -1){
976
fprintf(stderr, "init_gnutls_global failed\n");
977
exitcode = EXIT_FAILURE;
978
goto end;
979
} else {
980
gnutls_initialized = true;
981
}
982
983
if(mkdtemp(tempdir) == NULL){
984
perror("mkdtemp");
985
goto end;
986
}
987
tempdir_created = true;
988
989
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
990
fprintf(stderr, "init_gpgme failed\n");
991
exitcode = EXIT_FAILURE;
992
goto end;
993
} else {
994
gpgme_initialized = true;
995
}
996
997
if_index = (AvahiIfIndex) if_nametoindex(interface);
998
if(if_index == 0){
999
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1000
exitcode = EXIT_FAILURE;
1001
goto end;
1002
}
1003
1004
if(connect_to != NULL){
1005
/* Connect directly, do not use Zeroconf */
1006
/* (Mainly meant for debugging) */
1007
char *address = strrchr(connect_to, ':');
1008
if(address == NULL){
1009
fprintf(stderr, "No colon in address\n");
1010
exitcode = EXIT_FAILURE;
1011
goto end;
1012
}
1013
uint16_t port;
1014
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1015
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1016
or address[numchars+1] != '\0'){
1017
fprintf(stderr, "Bad port number\n");
1018
exitcode = EXIT_FAILURE;
1019
goto end;
1020
}
1021
port = (uint16_t)tmpmax;
1022
*address = '\0';
1023
address = connect_to;
1024
ret = start_mandos_communication(address, port, if_index, &mc);
1025
if(ret < 0){
1026
exitcode = EXIT_FAILURE;
1027
} else {
1028
exitcode = EXIT_SUCCESS;
1029
}
1030
goto end;
1031
}
1032
1033
if(not debug){
860
close(sd);
861
}
862
863
if (not debug){
1034
864
avahi_set_log_function(empty_log);
1035
865
}
1036
866
1039
869
1040
870
/* Allocate main Avahi loop object */
1041
871
mc.simple_poll = avahi_simple_poll_new();
1042
if(mc.simple_poll == NULL) {
872
if (mc.simple_poll == NULL) {
1043
873
fprintf(stderr, "Avahi: Failed to create simple poll"
1044
874
" object.\n");
1045
875
exitcode = EXIT_FAILURE;
1046
876
goto end;
1047
877
}
1048
878
1049
879
{
1050
880
AvahiServerConfig config;
1051
881
/* Do not publish any local Zeroconf records */
1054
884
config.publish_addresses = 0;
1055
885
config.publish_workstation = 0;
1056
886
config.publish_domain = 0;
1057
887
1058
888
/* Allocate a new server */
1059
889
mc.server = avahi_server_new(avahi_simple_poll_get
1060
890
(mc.simple_poll), &config, NULL,
1061
891
NULL, &error);
1062
892
1063
893
/* Free the Avahi configuration data */
1064
894
avahi_server_config_free(&config);
1065
895
}
1066
896
1067
897
/* Check if creating the Avahi server object succeeded */
1068
if(mc.server == NULL) {
898
if (mc.server == NULL) {
1069
899
fprintf(stderr, "Failed to create Avahi server: %s\n",
1070
900
avahi_strerror(error));
1071
901
exitcode = EXIT_FAILURE;
1077
907
AVAHI_PROTO_INET6,
1078
908
"_mandos._tcp", NULL, 0,
1079
909
browse_callback, &mc);
1080
if(sb == NULL) {
910
if (sb == NULL) {
1081
911
fprintf(stderr, "Failed to create service browser: %s\n",
1082
912
avahi_strerror(avahi_server_errno(mc.server)));
1083
913
exitcode = EXIT_FAILURE;
1085
915
}
1086
916
1087
917
/* Run the main loop */
1088
1089
if(debug){
918
919
if (debug){
1090
920
fprintf(stderr, "Starting Avahi loop search\n");
1091
921
}
1092
922
1093
923
avahi_simple_poll_loop(mc.simple_poll);
1094
924
1095
925
end:
1096
1097
if(debug){
926
927
if (debug){
1098
928
fprintf(stderr, "%s exiting\n", argv[0]);
1099
929
}
1100
930
1101
931
/* Cleanup things */
1102
if(sb != NULL)
932
if (sb != NULL)
1103
933
avahi_s_service_browser_free(sb);
1104
934
1105
if(mc.server != NULL)
935
if (mc.server != NULL)
1106
936
avahi_server_free(mc.server);
1107
1108
if(mc.simple_poll != NULL)
937
938
if (mc.simple_poll != NULL)
1109
939
avahi_simple_poll_free(mc.simple_poll);
1110
1111
if(gnutls_initialized){
1112
gnutls_certificate_free_credentials(mc.cred);
1113
gnutls_global_deinit();
1114
gnutls_dh_params_deinit(mc.dh_params);
1115
}
1116
1117
if(gpgme_initialized){
1118
gpgme_release(mc.ctx);
1119
}
1120
1121
/* Removes the temp directory used by GPGME */
1122
if(tempdir_created){
1123
DIR *d;
1124
struct dirent *direntry;
1125
d = opendir(tempdir);
1126
if(d == NULL){
1127
if(errno != ENOENT){
1128
perror("opendir");
1129
}
1130
} else {
1131
while(true){
1132
direntry = readdir(d);
1133
if(direntry == NULL){
1134
break;
1135
}
1136
/* Skip "." and ".." */
1137
if(direntry->d_name[0] == '.'
1138
and (direntry->d_name[1] == '\0'
1139
or (direntry->d_name[1] == '.'
1140
and direntry->d_name[2] == '\0'))){
1141
continue;
1142
}
1143
char *fullname = NULL;
1144
ret = asprintf(&fullname, "%s/%s", tempdir,
1145
direntry->d_name);
1146
if(ret < 0){
1147
perror("asprintf");
1148
continue;
1149
}
1150
ret = remove(fullname);
1151
if(ret == -1){
1152
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1153
strerror(errno));
1154
}
1155
free(fullname);
1156
}
1157
closedir(d);
1158
}
1159
ret = rmdir(tempdir);
1160
if(ret == -1 and errno != ENOENT){
1161
perror("rmdir");
1162
}
1163
}
940
free(pubkeyfile);
941
free(seckeyfile);
1164
942
1165
943
return exitcode;
1166
944
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0