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- Committer: Teddy Hogeborn
- Date: 2009-01-13 04:35:19 UTC
- Revision ID: teddy@fukt.bsnet.se-20090113043519-0yr39snphoegq8l1
* plugin-runner.c: Only space changes.
* plugins.d/mandos-client.c: - '' -
* plugins.d/password-prompt.c: - '' -
* plugins.d/mandos-client.c: - '' -
* plugins.d/password-prompt.c: - '' -
- files added:
- .bzr-builddeb
- debian
- debian/po
- files removed:
- network-protocol.txt
- files renamed:
- mandos-client.c => plugin-runner.c
- mandos-client.xml => plugin-runner.xml
- plugins.d/password-request.c => plugins.d/mandos-client.c
- plugins.d/password-request.xml => plugins.d/mandos-client.xml
- files modified:
- Makefile
added
removed
plugins.d/mandos-client.c
1
1
/* -*- coding: utf-8 -*- */
2
2
/*
3
* Mandos client - get and decrypt data from a Mandos server
3
* Mandos-client - get and decrypt data from a Mandos server
4
4
*
5
5
* This program is partly derived from an example program for an Avahi
6
6
* service browser, downloaded from
9
9
* "browse_callback", and parts of "main".
10
10
*
11
11
* Everything else is
12
* Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
12
* Copyright © 2008,2009 Teddy Hogeborn
13
* Copyright © 2008,2009 Björn Påhlsson
13
14
*
14
15
* This program is free software: you can redistribute it and/or
15
16
* modify it under the terms of the GNU General Public License as
32
33
#define _LARGEFILE_SOURCE
33
34
#define _FILE_OFFSET_BITS 64
34
35
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
36
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
36
37
37
#include <stdio.h> /* fprintf(), stderr, fwrite(), stdout, ferror() */
38
#include <stdio.h> /* fprintf(), stderr, fwrite(),
39
stdout, ferror(), sscanf */
38
40
#include <stdint.h> /* uint16_t, uint32_t */
39
41
#include <stddef.h> /* NULL, size_t, ssize_t */
40
#include <stdlib.h> /* free() */
42
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
43
srand() */
41
44
#include <stdbool.h> /* bool, true */
42
#include <string.h> /* memset(), strcmp(), strlen, strerror() */
43
#include <sys/ioctl.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
44
SIOCSIFFLAGS */
45
#include <string.h> /* memset(), strcmp(), strlen(),
46
strerror(), asprintf(), strcpy() */
47
#include <sys/ioctl.h> /* ioctl */
45
48
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
46
sockaddr_in6, PF_INET6, SOCK_STREAM, INET6_ADDRSTRLEN */
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() */
47
54
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
48
55
struct in6_addr, inet_pton(),
49
56
connect() */
50
#include <assert.h>
51
#include <errno.h> /* perror() */
52
#include <time.h>
57
#include <fcntl.h> /* open() */
58
#include <dirent.h> /* opendir(), struct dirent, readdir()
59
*/
60
#include <inttypes.h> /* PRIu16, SCNu16 */
61
#include <assert.h> /* assert() */
62
#include <errno.h> /* perror(), errno */
63
#include <time.h> /* time() */
53
64
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
54
65
SIOCSIFFLAGS, if_indextoname(),
55
66
if_nametoindex(), IF_NAMESIZE */
56
#include <unistd.h> /* close(), SEEK_SET, off_t, write()*/
57
67
#include <netinet/in.h>
68
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
69
getuid(), getgid(), setuid(),
70
setgid() */
58
71
#include <arpa/inet.h> /* inet_pton(), htons */
59
#include <iso646.h> /* not */
60
#include <argp.h> /* struct argp_option,
61
struct argp_state, struct argp,
62
argp_parse() */
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 */
63
77
64
78
/* Avahi */
65
#include <avahi-core/core.h> /* AvahiSimplePoll, AvahiServer,
66
AvahiIfIndex */
79
/* All Avahi types, constants and functions
80
Avahi*, avahi_*,
81
AVAHI_* */
82
#include <avahi-core/core.h>
67
83
#include <avahi-core/lookup.h>
68
#include <avahi-core/log.h> /* AvahiLogLevel */
84
#include <avahi-core/log.h>
69
85
#include <avahi-common/simple-watch.h>
70
86
#include <avahi-common/malloc.h>
71
87
#include <avahi-common/error.h>
72
88
73
89
/* GnuTLS */
74
#include <gnutls/gnutls.h> /* gnutls_certificate_credentials_t,
75
gnutls_dh_params_t,
76
gnutls_strerror(),
77
gnutls_global_init(),
78
gnutls_global_set_log_level(),
79
gnutls_global_set_log_function(),
80
gnutls_certificate_allocate_credentials(),
81
gnutls_global_deinit(),
82
gnutls_dh_params_init(),
83
gnutls_dh_params_generate(),
84
gnutls_certificate_set_dh_params(),
85
gnutls_certificate_free_credentials(),
86
gnutls_session_t, gnutls_init(),
87
gnutls_priority_set_direct(),
88
gnutls_deinit(),
89
gnutls_credentials_set(),
90
gnutls_certificate_server_set_request(),
91
gnutls_dh_set_prime_bits(),
92
gnutls_transport_set_ptr(),
93
gnutls_transport_ptr_t,
94
gnutls_handshake(),
95
gnutls_record_recv()
96
gnutls_perror(), gnutls_bye(),
90
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
91
functions:
92
gnutls_*
97
93
init_gnutls_session(),
98
GNUTLS_E_SUCCESS,
99
GNUTLS_CRD_CERTIFICATE,
100
GNUTLS_CERT_IGNORE,
101
GNUTLS_E_INTERRUPTED,
102
GNUTLS_E_AGAIN,
103
GNUTLS_E_REHANDSHAKE,
104
GNUTLS_SHUT_RDWR, */
105
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
106
GNUTLS_OPENPGP_FMT_BASE64 */
94
GNUTLS_* */
95
#include <gnutls/openpgp.h>
96
/* gnutls_certificate_set_openpgp_key_file(),
97
GNUTLS_OPENPGP_FMT_BASE64 */
107
98
108
99
/* GPGME */
109
#include <gpgme.h> /* gpgme_data_t, gpgme_ctx_t,
110
gpgme_error_t, gpgme_engine_info_t,
111
gpgme_check_version(),
112
gpgme_engine_check_version(),
113
gpgme_strsource(),
114
gpgme_strerror(),
115
gpgme_get_engine_info(),
116
gpgme_set_engine_info(),
117
gpgme_data_new_from_mem(),
118
gpgme_data_new(), gpgme_new(),
119
gpgme_op_decrypt(),
120
gpgme_decrypt_result_t,
121
gpgme_op_decrypt_result(),
122
gpgme_recipient_t,
123
gpgme_pubkey_algo_name(),
124
gpgme_data_seek(),
125
gpgme_data_read(),
126
gpgme_data_release()
100
#include <gpgme.h> /* All GPGME types, constants and
101
functions:
102
gpgme_*
127
103
GPGME_PROTOCOL_OpenPGP,
128
GPG_ERR_NO_ERROR,
129
GPG_ERR_NO_SECKEY, */
104
GPG_ERR_NO_* */
130
105
131
106
#define BUFFER_SIZE 256
132
107
108
#define PATHDIR "/conf/conf.d/mandos"
109
#define SECKEY "seckey.txt"
110
#define PUBKEY "pubkey.txt"
111
133
112
bool debug = false;
134
static const char *keydir = "/conf/conf.d/mandos";
135
113
static const char mandos_protocol_version[] = "1";
136
const char *argp_program_version = "mandosclient 0.9";
114
const char *argp_program_version = "mandos-client " VERSION;
137
115
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
138
116
139
117
/* Used for passing in values through the Avahi callback functions */
144
122
unsigned int dh_bits;
145
123
gnutls_dh_params_t dh_params;
146
124
const char *priority;
125
gpgme_ctx_t ctx;
147
126
} mandos_context;
148
127
149
128
/*
153
132
*/
154
133
size_t adjustbuffer(char **buffer, size_t buffer_length,
155
134
size_t buffer_capacity){
156
if (buffer_length + BUFFER_SIZE > buffer_capacity){
135
if(buffer_length + BUFFER_SIZE > buffer_capacity){
157
136
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
158
if (buffer == NULL){
137
if(buffer == NULL){
159
138
return 0;
160
139
}
161
140
buffer_capacity += BUFFER_SIZE;
164
143
}
165
144
166
145
/*
167
* Decrypt OpenPGP data using keyrings in HOMEDIR.
168
* Returns -1 on error
146
* Initialize GPGME.
169
147
*/
170
static ssize_t pgp_packet_decrypt (const char *cryptotext,
171
size_t crypto_size,
172
char **plaintext,
173
const char *homedir){
174
gpgme_data_t dh_crypto, dh_plain;
175
gpgme_ctx_t ctx;
148
static bool init_gpgme(mandos_context *mc, const char *seckey,
149
const char *pubkey, const char *tempdir){
150
int ret;
176
151
gpgme_error_t rc;
177
ssize_t ret;
178
size_t plaintext_capacity = 0;
179
ssize_t plaintext_length = 0;
180
152
gpgme_engine_info_t engine_info;
181
153
182
if (debug){
183
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
154
155
/*
156
* Helper function to insert pub and seckey to the enigne keyring.
157
*/
158
bool import_key(const char *filename){
159
int fd;
160
gpgme_data_t pgp_data;
161
162
fd = (int)TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
163
if(fd == -1){
164
perror("open");
165
return false;
166
}
167
168
rc = gpgme_data_new_from_fd(&pgp_data, fd);
169
if(rc != GPG_ERR_NO_ERROR){
170
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
171
gpgme_strsource(rc), gpgme_strerror(rc));
172
return false;
173
}
174
175
rc = gpgme_op_import(mc->ctx, pgp_data);
176
if(rc != GPG_ERR_NO_ERROR){
177
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
178
gpgme_strsource(rc), gpgme_strerror(rc));
179
return false;
180
}
181
182
ret = (int)TEMP_FAILURE_RETRY(close(fd));
183
if(ret == -1){
184
perror("close");
185
}
186
gpgme_data_release(pgp_data);
187
return true;
188
}
189
190
if(debug){
191
fprintf(stderr, "Initialize gpgme\n");
184
192
}
185
193
186
194
/* Init GPGME */
187
195
gpgme_check_version(NULL);
188
196
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
189
if (rc != GPG_ERR_NO_ERROR){
197
if(rc != GPG_ERR_NO_ERROR){
190
198
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
191
199
gpgme_strsource(rc), gpgme_strerror(rc));
192
return -1;
200
return false;
193
201
}
194
202
195
/* Set GPGME home directory for the OpenPGP engine only */
196
rc = gpgme_get_engine_info (&engine_info);
197
if (rc != GPG_ERR_NO_ERROR){
203
/* Set GPGME home directory for the OpenPGP engine only */
204
rc = gpgme_get_engine_info(&engine_info);
205
if(rc != GPG_ERR_NO_ERROR){
198
206
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
199
207
gpgme_strsource(rc), gpgme_strerror(rc));
200
return -1;
208
return false;
201
209
}
202
210
while(engine_info != NULL){
203
211
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
204
212
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
205
engine_info->file_name, homedir);
213
engine_info->file_name, tempdir);
206
214
break;
207
215
}
208
216
engine_info = engine_info->next;
209
217
}
210
218
if(engine_info == NULL){
211
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
212
return -1;
219
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
220
return false;
221
}
222
223
/* Create new GPGME "context" */
224
rc = gpgme_new(&(mc->ctx));
225
if(rc != GPG_ERR_NO_ERROR){
226
fprintf(stderr, "bad gpgme_new: %s: %s\n",
227
gpgme_strsource(rc), gpgme_strerror(rc));
228
return false;
229
}
230
231
if(not import_key(pubkey) or not import_key(seckey)){
232
return false;
233
}
234
235
return true;
236
}
237
238
/*
239
* Decrypt OpenPGP data.
240
* Returns -1 on error
241
*/
242
static ssize_t pgp_packet_decrypt(const mandos_context *mc,
243
const char *cryptotext,
244
size_t crypto_size,
245
char **plaintext){
246
gpgme_data_t dh_crypto, dh_plain;
247
gpgme_error_t rc;
248
ssize_t ret;
249
size_t plaintext_capacity = 0;
250
ssize_t plaintext_length = 0;
251
252
if(debug){
253
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
213
254
}
214
255
215
256
/* Create new GPGME data buffer from memory cryptotext */
216
257
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
217
258
0);
218
if (rc != GPG_ERR_NO_ERROR){
259
if(rc != GPG_ERR_NO_ERROR){
219
260
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
220
261
gpgme_strsource(rc), gpgme_strerror(rc));
221
262
return -1;
223
264
224
265
/* Create new empty GPGME data buffer for the plaintext */
225
266
rc = gpgme_data_new(&dh_plain);
226
if (rc != GPG_ERR_NO_ERROR){
267
if(rc != GPG_ERR_NO_ERROR){
227
268
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
228
269
gpgme_strsource(rc), gpgme_strerror(rc));
229
270
gpgme_data_release(dh_crypto);
230
271
return -1;
231
272
}
232
273
233
/* Create new GPGME "context" */
234
rc = gpgme_new(&ctx);
235
if (rc != GPG_ERR_NO_ERROR){
236
fprintf(stderr, "bad gpgme_new: %s: %s\n",
237
gpgme_strsource(rc), gpgme_strerror(rc));
238
plaintext_length = -1;
239
goto decrypt_end;
240
}
241
242
274
/* Decrypt data from the cryptotext data buffer to the plaintext
243
275
data buffer */
244
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
245
if (rc != GPG_ERR_NO_ERROR){
276
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
277
if(rc != GPG_ERR_NO_ERROR){
246
278
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
247
279
gpgme_strsource(rc), gpgme_strerror(rc));
248
280
plaintext_length = -1;
281
if(debug){
282
gpgme_decrypt_result_t result;
283
result = gpgme_op_decrypt_result(mc->ctx);
284
if(result == NULL){
285
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
286
} else {
287
fprintf(stderr, "Unsupported algorithm: %s\n",
288
result->unsupported_algorithm);
289
fprintf(stderr, "Wrong key usage: %u\n",
290
result->wrong_key_usage);
291
if(result->file_name != NULL){
292
fprintf(stderr, "File name: %s\n", result->file_name);
293
}
294
gpgme_recipient_t recipient;
295
recipient = result->recipients;
296
if(recipient){
297
while(recipient != NULL){
298
fprintf(stderr, "Public key algorithm: %s\n",
299
gpgme_pubkey_algo_name(recipient->pubkey_algo));
300
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
301
fprintf(stderr, "Secret key available: %s\n",
302
recipient->status == GPG_ERR_NO_SECKEY
303
? "No" : "Yes");
304
recipient = recipient->next;
305
}
306
}
307
}
308
}
249
309
goto decrypt_end;
250
310
}
251
311
253
313
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
254
314
}
255
315
256
if (debug){
257
gpgme_decrypt_result_t result;
258
result = gpgme_op_decrypt_result(ctx);
259
if (result == NULL){
260
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
261
} else {
262
fprintf(stderr, "Unsupported algorithm: %s\n",
263
result->unsupported_algorithm);
264
fprintf(stderr, "Wrong key usage: %d\n",
265
result->wrong_key_usage);
266
if(result->file_name != NULL){
267
fprintf(stderr, "File name: %s\n", result->file_name);
268
}
269
gpgme_recipient_t recipient;
270
recipient = result->recipients;
271
if(recipient){
272
while(recipient != NULL){
273
fprintf(stderr, "Public key algorithm: %s\n",
274
gpgme_pubkey_algo_name(recipient->pubkey_algo));
275
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
276
fprintf(stderr, "Secret key available: %s\n",
277
recipient->status == GPG_ERR_NO_SECKEY
278
? "No" : "Yes");
279
recipient = recipient->next;
280
}
281
}
282
}
283
}
284
285
316
/* Seek back to the beginning of the GPGME plaintext data buffer */
286
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
287
perror("pgpme_data_seek");
317
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
318
perror("gpgme_data_seek");
288
319
plaintext_length = -1;
289
320
goto decrypt_end;
290
321
}
294
325
plaintext_capacity = adjustbuffer(plaintext,
295
326
(size_t)plaintext_length,
296
327
plaintext_capacity);
297
if (plaintext_capacity == 0){
328
if(plaintext_capacity == 0){
298
329
perror("adjustbuffer");
299
330
plaintext_length = -1;
300
331
goto decrypt_end;
303
334
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
304
335
BUFFER_SIZE);
305
336
/* Print the data, if any */
306
if (ret == 0){
337
if(ret == 0){
307
338
/* EOF */
308
339
break;
309
340
}
314
345
}
315
346
plaintext_length += ret;
316
347
}
317
348
318
349
if(debug){
319
350
fprintf(stderr, "Decrypted password is: ");
320
351
for(ssize_t i = 0; i < plaintext_length; i++){
333
364
return plaintext_length;
334
365
}
335
366
336
static const char * safer_gnutls_strerror (int value) {
337
const char *ret = gnutls_strerror (value);
338
if (ret == NULL)
367
static const char * safer_gnutls_strerror(int value) {
368
const char *ret = gnutls_strerror(value); /* Spurious warning */
369
if(ret == NULL)
339
370
ret = "(unknown)";
340
371
return ret;
341
372
}
347
378
}
348
379
349
380
static int init_gnutls_global(mandos_context *mc,
350
const char *pubkeyfile,
351
const char *seckeyfile){
381
const char *pubkeyfilename,
382
const char *seckeyfilename){
352
383
int ret;
353
384
354
385
if(debug){
355
386
fprintf(stderr, "Initializing GnuTLS\n");
356
387
}
357
358
if ((ret = gnutls_global_init ())
359
!= GNUTLS_E_SUCCESS) {
360
fprintf (stderr, "GnuTLS global_init: %s\n",
361
safer_gnutls_strerror(ret));
388
389
ret = gnutls_global_init();
390
if(ret != GNUTLS_E_SUCCESS) {
391
fprintf(stderr, "GnuTLS global_init: %s\n",
392
safer_gnutls_strerror(ret));
362
393
return -1;
363
394
}
364
395
365
if (debug){
396
if(debug){
366
397
/* "Use a log level over 10 to enable all debugging options."
367
398
* - GnuTLS manual
368
399
*/
371
402
}
372
403
373
404
/* OpenPGP credentials */
374
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
375
!= GNUTLS_E_SUCCESS) {
376
fprintf (stderr, "GnuTLS memory error: %s\n",
377
safer_gnutls_strerror(ret));
378
gnutls_global_deinit ();
405
gnutls_certificate_allocate_credentials(&mc->cred);
406
if(ret != GNUTLS_E_SUCCESS){
407
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious
408
warning */
409
safer_gnutls_strerror(ret));
410
gnutls_global_deinit();
379
411
return -1;
380
412
}
381
413
382
414
if(debug){
383
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
384
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
385
seckeyfile);
415
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
416
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
417
seckeyfilename);
386
418
}
387
419
388
420
ret = gnutls_certificate_set_openpgp_key_file
389
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
390
if (ret != GNUTLS_E_SUCCESS) {
421
(mc->cred, pubkeyfilename, seckeyfilename,
422
GNUTLS_OPENPGP_FMT_BASE64);
423
if(ret != GNUTLS_E_SUCCESS) {
391
424
fprintf(stderr,
392
425
"Error[%d] while reading the OpenPGP key pair ('%s',"
393
" '%s')\n", ret, pubkeyfile, seckeyfile);
394
fprintf(stdout, "The GnuTLS error is: %s\n",
426
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
427
fprintf(stderr, "The GnuTLS error is: %s\n",
395
428
safer_gnutls_strerror(ret));
396
429
goto globalfail;
397
430
}
398
431
399
432
/* GnuTLS server initialization */
400
433
ret = gnutls_dh_params_init(&mc->dh_params);
401
if (ret != GNUTLS_E_SUCCESS) {
402
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
403
" %s\n", safer_gnutls_strerror(ret));
434
if(ret != GNUTLS_E_SUCCESS) {
435
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
436
" %s\n", safer_gnutls_strerror(ret));
404
437
goto globalfail;
405
438
}
406
439
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
407
if (ret != GNUTLS_E_SUCCESS) {
408
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
409
safer_gnutls_strerror(ret));
440
if(ret != GNUTLS_E_SUCCESS) {
441
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
442
safer_gnutls_strerror(ret));
410
443
goto globalfail;
411
444
}
412
445
413
446
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
414
447
415
448
return 0;
416
449
417
450
globalfail:
418
451
419
452
gnutls_certificate_free_credentials(mc->cred);
420
453
gnutls_global_deinit();
454
gnutls_dh_params_deinit(mc->dh_params);
421
455
return -1;
422
423
456
}
424
457
425
458
static int init_gnutls_session(mandos_context *mc,
427
460
int ret;
428
461
/* GnuTLS session creation */
429
462
ret = gnutls_init(session, GNUTLS_SERVER);
430
if (ret != GNUTLS_E_SUCCESS){
463
if(ret != GNUTLS_E_SUCCESS){
431
464
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
432
465
safer_gnutls_strerror(ret));
433
466
}
435
468
{
436
469
const char *err;
437
470
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
438
if (ret != GNUTLS_E_SUCCESS) {
471
if(ret != GNUTLS_E_SUCCESS) {
439
472
fprintf(stderr, "Syntax error at: %s\n", err);
440
473
fprintf(stderr, "GnuTLS error: %s\n",
441
474
safer_gnutls_strerror(ret));
442
gnutls_deinit (*session);
475
gnutls_deinit(*session);
443
476
return -1;
444
477
}
445
478
}
446
479
447
480
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
448
481
mc->cred);
449
if (ret != GNUTLS_E_SUCCESS) {
482
if(ret != GNUTLS_E_SUCCESS) {
450
483
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
451
484
safer_gnutls_strerror(ret));
452
gnutls_deinit (*session);
485
gnutls_deinit(*session);
453
486
return -1;
454
487
}
455
488
456
489
/* ignore client certificate if any. */
457
gnutls_certificate_server_set_request (*session,
458
GNUTLS_CERT_IGNORE);
490
gnutls_certificate_server_set_request(*session,
491
GNUTLS_CERT_IGNORE);
459
492
460
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
493
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
461
494
462
495
return 0;
463
496
}
471
504
AvahiIfIndex if_index,
472
505
mandos_context *mc){
473
506
int ret, tcp_sd;
507
ssize_t sret;
474
508
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
475
509
char *buffer = NULL;
476
510
char *decrypted_buffer;
482
516
char interface[IF_NAMESIZE];
483
517
gnutls_session_t session;
484
518
485
ret = init_gnutls_session (mc, &session);
486
if (ret != 0){
519
ret = init_gnutls_session(mc, &session);
520
if(ret != 0){
487
521
return -1;
488
522
}
489
523
490
524
if(debug){
491
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
492
ip, port);
525
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
526
"\n", ip, port);
493
527
}
494
528
495
529
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
497
531
perror("socket");
498
532
return -1;
499
533
}
500
534
501
535
if(debug){
502
536
if(if_indextoname((unsigned int)if_index, interface) == NULL){
503
537
perror("if_indextoname");
506
540
fprintf(stderr, "Binding to interface %s\n", interface);
507
541
}
508
542
509
memset(&to,0,sizeof(to)); /* Spurious warning */
543
memset(&to, 0, sizeof(to));
510
544
to.in6.sin6_family = AF_INET6;
511
545
/* It would be nice to have a way to detect if we were passed an
512
546
IPv4 address here. Now we assume an IPv6 address. */
513
547
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
514
if (ret < 0 ){
548
if(ret < 0 ){
515
549
perror("inet_pton");
516
550
return -1;
517
551
}
519
553
fprintf(stderr, "Bad address: %s\n", ip);
520
554
return -1;
521
555
}
522
to.in6.sin6_port = htons(port); /* Spurious warning */
556
to.in6.sin6_port = htons(port); /* Spurious warning */
523
557
524
558
to.in6.sin6_scope_id = (uint32_t)if_index;
525
559
526
560
if(debug){
527
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
561
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
562
port);
528
563
char addrstr[INET6_ADDRSTRLEN] = "";
529
564
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
530
565
sizeof(addrstr)) == NULL){
537
572
}
538
573
539
574
ret = connect(tcp_sd, &to.in, sizeof(to));
540
if (ret < 0){
575
if(ret < 0){
541
576
perror("connect");
542
577
return -1;
543
578
}
544
579
545
580
const char *out = mandos_protocol_version;
546
581
written = 0;
547
while (true){
582
while(true){
548
583
size_t out_size = strlen(out);
549
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
584
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
550
585
out_size - written));
551
if (ret == -1){
586
if(ret == -1){
552
587
perror("write");
553
588
retval = -1;
554
589
goto mandos_end;
557
592
if(written < out_size){
558
593
continue;
559
594
} else {
560
if (out == mandos_protocol_version){
595
if(out == mandos_protocol_version){
561
596
written = 0;
562
597
out = "\r\n";
563
598
} else {
565
600
}
566
601
}
567
602
}
568
603
569
604
if(debug){
570
605
fprintf(stderr, "Establishing TLS session with %s\n", ip);
571
606
}
572
607
573
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
574
575
ret = gnutls_handshake (session);
576
577
if (ret != GNUTLS_E_SUCCESS){
608
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
609
610
do{
611
ret = gnutls_handshake(session);
612
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
613
614
if(ret != GNUTLS_E_SUCCESS){
578
615
if(debug){
579
616
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
580
gnutls_perror (ret);
617
gnutls_perror(ret);
581
618
}
582
619
retval = -1;
583
620
goto mandos_end;
589
626
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
590
627
ip);
591
628
}
592
629
593
630
while(true){
594
631
buffer_capacity = adjustbuffer(&buffer, buffer_length,
595
632
buffer_capacity);
596
if (buffer_capacity == 0){
633
if(buffer_capacity == 0){
597
634
perror("adjustbuffer");
598
635
retval = -1;
599
636
goto mandos_end;
600
637
}
601
638
602
ret = gnutls_record_recv(session, buffer+buffer_length,
603
BUFFER_SIZE);
604
if (ret == 0){
639
sret = gnutls_record_recv(session, buffer+buffer_length,
640
BUFFER_SIZE);
641
if(sret == 0){
605
642
break;
606
643
}
607
if (ret < 0){
608
switch(ret){
644
if(sret < 0){
645
switch(sret){
609
646
case GNUTLS_E_INTERRUPTED:
610
647
case GNUTLS_E_AGAIN:
611
648
break;
612
649
case GNUTLS_E_REHANDSHAKE:
613
ret = gnutls_handshake (session);
614
if (ret < 0){
650
do{
651
ret = gnutls_handshake(session);
652
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
653
if(ret < 0){
615
654
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
616
gnutls_perror (ret);
655
gnutls_perror(ret);
617
656
retval = -1;
618
657
goto mandos_end;
619
658
}
622
661
fprintf(stderr, "Unknown error while reading data from"
623
662
" encrypted session with Mandos server\n");
624
663
retval = -1;
625
gnutls_bye (session, GNUTLS_SHUT_RDWR);
664
gnutls_bye(session, GNUTLS_SHUT_RDWR);
626
665
goto mandos_end;
627
666
}
628
667
} else {
629
buffer_length += (size_t) ret;
668
buffer_length += (size_t) sret;
630
669
}
631
670
}
632
671
634
673
fprintf(stderr, "Closing TLS session\n");
635
674
}
636
675
637
gnutls_bye (session, GNUTLS_SHUT_RDWR);
676
gnutls_bye(session, GNUTLS_SHUT_RDWR);
638
677
639
if (buffer_length > 0){
640
decrypted_buffer_size = pgp_packet_decrypt(buffer,
678
if(buffer_length > 0){
679
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
641
680
buffer_length,
642
&decrypted_buffer,
643
keydir);
644
if (decrypted_buffer_size >= 0){
681
&decrypted_buffer);
682
if(decrypted_buffer_size >= 0){
645
683
written = 0;
646
684
while(written < (size_t) decrypted_buffer_size){
647
ret = (int)fwrite (decrypted_buffer + written, 1,
648
(size_t)decrypted_buffer_size - written,
649
stdout);
685
ret = (int)fwrite(decrypted_buffer + written, 1,
686
(size_t)decrypted_buffer_size - written,
687
stdout);
650
688
if(ret == 0 and ferror(stdout)){
651
689
if(debug){
652
690
fprintf(stderr, "Error writing encrypted data: %s\n",
661
699
} else {
662
700
retval = -1;
663
701
}
702
} else {
703
retval = -1;
664
704
}
665
705
666
706
/* Shutdown procedure */
667
707
668
708
mandos_end:
669
709
free(buffer);
670
close(tcp_sd);
671
gnutls_deinit (session);
710
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
711
if(ret == -1){
712
perror("close");
713
}
714
gnutls_deinit(session);
672
715
return retval;
673
716
}
674
717
687
730
flags,
688
731
void* userdata) {
689
732
mandos_context *mc = userdata;
690
assert(r); /* Spurious warning */
733
assert(r);
691
734
692
735
/* Called whenever a service has been resolved successfully or
693
736
timed out */
694
737
695
switch (event) {
738
switch(event) {
696
739
default:
697
740
case AVAHI_RESOLVER_FAILURE:
698
741
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
705
748
char ip[AVAHI_ADDRESS_STR_MAX];
706
749
avahi_address_snprint(ip, sizeof(ip), address);
707
750
if(debug){
708
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
709
" port %d\n", name, host_name, ip, interface, port);
751
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
752
PRIu16 ") on port %d\n", name, host_name, ip,
753
interface, port);
710
754
}
711
755
int ret = start_mandos_communication(ip, port, interface, mc);
712
if (ret == 0){
713
exit(EXIT_SUCCESS);
756
if(ret == 0){
757
avahi_simple_poll_quit(mc->simple_poll);
714
758
}
715
759
}
716
760
}
728
772
flags,
729
773
void* userdata) {
730
774
mandos_context *mc = userdata;
731
assert(b); /* Spurious warning */
775
assert(b);
732
776
733
777
/* Called whenever a new services becomes available on the LAN or
734
778
is removed from the LAN */
735
779
736
switch (event) {
780
switch(event) {
737
781
default:
738
782
case AVAHI_BROWSER_FAILURE:
739
783
748
792
the callback function is called the Avahi server will free the
749
793
resolver for us. */
750
794
751
if (!(avahi_s_service_resolver_new(mc->server, interface,
795
if(!(avahi_s_service_resolver_new(mc->server, interface,
752
796
protocol, name, type, domain,
753
797
AVAHI_PROTO_INET6, 0,
754
798
resolve_callback, mc)))
768
812
}
769
813
}
770
814
771
/* Combines file name and path and returns the malloced new
772
string. some sane checks could/should be added */
773
static const char *combinepath(const char *first, const char *second){
774
size_t f_len = strlen(first);
775
size_t s_len = strlen(second);
776
char *tmp = malloc(f_len + s_len + 2);
777
if (tmp == NULL){
778
return NULL;
779
}
780
if(f_len > 0){
781
memcpy(tmp, first, f_len); /* Spurious warning */
782
}
783
tmp[f_len] = '/';
784
if(s_len > 0){
785
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
786
}
787
tmp[f_len + 1 + s_len] = '\0';
788
return tmp;
789
}
790
791
792
815
int main(int argc, char *argv[]){
793
816
AvahiSServiceBrowser *sb = NULL;
794
817
int error;
800
823
uid_t uid;
801
824
gid_t gid;
802
825
char *connect_to = NULL;
826
char tempdir[] = "/tmp/mandosXXXXXX";
803
827
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
804
const char *pubkeyfile = "pubkey.txt";
805
const char *seckeyfile = "seckey.txt";
828
const char *seckey = PATHDIR "/" SECKEY;
829
const char *pubkey = PATHDIR "/" PUBKEY;
830
806
831
mandos_context mc = { .simple_poll = NULL, .server = NULL,
807
.dh_bits = 1024, .priority = "SECURE256"};
832
.dh_bits = 1024, .priority = "SECURE256"
833
":!CTYPE-X.509:+CTYPE-OPENPGP" };
808
834
bool gnutls_initalized = false;
835
bool gpgme_initalized = false;
809
836
810
837
{
811
838
struct argp_option options[] = {
812
839
{ .name = "debug", .key = 128,
813
840
.doc = "Debug mode", .group = 3 },
814
841
{ .name = "connect", .key = 'c',
815
.arg = "IP",
816
.doc = "Connect directly to a sepcified mandos server",
842
.arg = "ADDRESS:PORT",
843
.doc = "Connect directly to a specific Mandos server",
817
844
.group = 1 },
818
845
{ .name = "interface", .key = 'i',
819
.arg = "INTERFACE",
820
.doc = "Interface that Avahi will conntect through",
821
.group = 1 },
822
{ .name = "keydir", .key = 'd',
823
.arg = "KEYDIR",
824
.doc = "Directory where the openpgp keyring is",
846
.arg = "NAME",
847
.doc = "Interface that will be used to search for Mandos"
848
" servers",
825
849
.group = 1 },
826
850
{ .name = "seckey", .key = 's',
827
.arg = "SECKEY",
828
.doc = "Secret openpgp key for gnutls authentication",
851
.arg = "FILE",
852
.doc = "OpenPGP secret key file base name",
829
853
.group = 1 },
830
854
{ .name = "pubkey", .key = 'p',
831
.arg = "PUBKEY",
832
.doc = "Public openpgp key for gnutls authentication",
855
.arg = "FILE",
856
.doc = "OpenPGP public key file base name",
833
857
.group = 2 },
834
858
{ .name = "dh-bits", .key = 129,
835
859
.arg = "BITS",
836
.doc = "dh-bits to use in gnutls communication",
860
.doc = "Bit length of the prime number used in the"
861
" Diffie-Hellman key exchange",
837
862
.group = 2 },
838
863
{ .name = "priority", .key = 130,
839
.arg = "PRIORITY",
840
.doc = "GNUTLS priority", .group = 1 },
864
.arg = "STRING",
865
.doc = "GnuTLS priority string for the TLS handshake",
866
.group = 1 },
841
867
{ .name = NULL }
842
868
};
843
844
869
845
error_t parse_opt (int key, char *arg,
846
struct argp_state *state) {
847
/* Get the INPUT argument from `argp_parse', which we know is
848
a pointer to our plugin list pointer. */
849
switch (key) {
850
case 128:
870
error_t parse_opt(int key, char *arg,
871
struct argp_state *state) {
872
switch(key) {
873
case 128: /* --debug */
851
874
debug = true;
852
875
break;
853
case 'c':
876
case 'c': /* --connect */
854
877
connect_to = arg;
855
878
break;
856
case 'i':
879
case 'i': /* --interface */
857
880
interface = arg;
858
881
break;
859
case 'd':
860
keydir = arg;
861
break;
862
case 's':
863
seckeyfile = arg;
864
break;
865
case 'p':
866
pubkeyfile = arg;
867
break;
868
case 129:
869
errno = 0;
870
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
871
if (errno){
872
perror("strtol");
882
case 's': /* --seckey */
883
seckey = arg;
884
break;
885
case 'p': /* --pubkey */
886
pubkey = arg;
887
break;
888
case 129: /* --dh-bits */
889
ret = sscanf(arg, "%u", &mc.dh_bits);
890
if(ret != 1){
891
fprintf(stderr, "Bad number of DH bits\n");
873
892
exit(EXIT_FAILURE);
874
893
}
875
894
break;
876
case 130:
895
case 130: /* --priority */
877
896
mc.priority = arg;
878
897
break;
879
898
case ARGP_KEY_ARG:
880
argp_usage (state);
899
argp_usage(state);
900
case ARGP_KEY_END:
881
901
break;
882
case ARGP_KEY_END:
883
break;
884
902
default:
885
903
return ARGP_ERR_UNKNOWN;
886
904
}
887
905
return 0;
888
906
}
889
907
890
908
struct argp argp = { .options = options, .parser = parse_opt,
891
909
.args_doc = "",
892
910
.doc = "Mandos client -- Get and decrypt"
893
" passwords from mandos server" };
894
argp_parse (&argp, argc, argv, 0, 0, NULL);
895
}
896
897
pubkeyfile = combinepath(keydir, pubkeyfile);
898
if (pubkeyfile == NULL){
899
perror("combinepath");
900
exitcode = EXIT_FAILURE;
901
goto end;
902
}
903
904
seckeyfile = combinepath(keydir, seckeyfile);
905
if (seckeyfile == NULL){
906
perror("combinepath");
907
goto end;
908
}
909
910
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
911
if (ret == -1){
912
fprintf(stderr, "init_gnutls_global\n");
913
goto end;
914
} else {
915
gnutls_initalized = true;
916
}
917
911
" passwords from a Mandos server" };
912
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
913
if(ret == ARGP_ERR_UNKNOWN){
914
fprintf(stderr, "Unknown error while parsing arguments\n");
915
exitcode = EXIT_FAILURE;
916
goto end;
917
}
918
}
919
920
/* If the interface is down, bring it up */
921
{
922
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
923
if(sd < 0) {
924
perror("socket");
925
exitcode = EXIT_FAILURE;
926
goto end;
927
}
928
strcpy(network.ifr_name, interface);
929
ret = ioctl(sd, SIOCGIFFLAGS, &network);
930
if(ret == -1){
931
perror("ioctl SIOCGIFFLAGS");
932
exitcode = EXIT_FAILURE;
933
goto end;
934
}
935
if((network.ifr_flags & IFF_UP) == 0){
936
network.ifr_flags |= IFF_UP;
937
ret = ioctl(sd, SIOCSIFFLAGS, &network);
938
if(ret == -1){
939
perror("ioctl SIOCSIFFLAGS");
940
exitcode = EXIT_FAILURE;
941
goto end;
942
}
943
}
944
ret = (int)TEMP_FAILURE_RETRY(close(sd));
945
if(ret == -1){
946
perror("close");
947
}
948
}
949
918
950
uid = getuid();
919
951
gid = getgid();
920
952
921
953
ret = setuid(uid);
922
if (ret == -1){
954
if(ret == -1){
923
955
perror("setuid");
924
956
}
925
957
926
958
setgid(gid);
927
if (ret == -1){
959
if(ret == -1){
928
960
perror("setgid");
929
961
}
930
962
963
ret = init_gnutls_global(&mc, pubkey, seckey);
964
if(ret == -1){
965
fprintf(stderr, "init_gnutls_global failed\n");
966
exitcode = EXIT_FAILURE;
967
goto end;
968
} else {
969
gnutls_initalized = true;
970
}
971
972
if(mkdtemp(tempdir) == NULL){
973
perror("mkdtemp");
974
tempdir[0] = '\0';
975
goto end;
976
}
977
978
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
979
fprintf(stderr, "gpgme_initalized failed\n");
980
exitcode = EXIT_FAILURE;
981
goto end;
982
} else {
983
gpgme_initalized = true;
984
}
985
931
986
if_index = (AvahiIfIndex) if_nametoindex(interface);
932
987
if(if_index == 0){
933
988
fprintf(stderr, "No such interface: \"%s\"\n", interface);
943
998
exitcode = EXIT_FAILURE;
944
999
goto end;
945
1000
}
946
errno = 0;
947
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
948
if(errno){
949
perror("Bad port number");
1001
uint16_t port;
1002
ret = sscanf(address+1, "%" SCNu16, &port);
1003
if(ret != 1){
1004
fprintf(stderr, "Bad port number\n");
950
1005
exitcode = EXIT_FAILURE;
951
1006
goto end;
952
1007
}
961
1016
goto end;
962
1017
}
963
1018
964
/* If the interface is down, bring it up */
965
{
966
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
967
if(sd < 0) {
968
perror("socket");
969
exitcode = EXIT_FAILURE;
970
goto end;
971
}
972
strcpy(network.ifr_name, interface); /* Spurious warning */
973
ret = ioctl(sd, SIOCGIFFLAGS, &network);
974
if(ret == -1){
975
perror("ioctl SIOCGIFFLAGS");
976
exitcode = EXIT_FAILURE;
977
goto end;
978
}
979
if((network.ifr_flags & IFF_UP) == 0){
980
network.ifr_flags |= IFF_UP;
981
ret = ioctl(sd, SIOCSIFFLAGS, &network);
982
if(ret == -1){
983
perror("ioctl SIOCSIFFLAGS");
984
exitcode = EXIT_FAILURE;
985
goto end;
986
}
987
}
988
close(sd);
989
}
990
991
if (not debug){
1019
if(not debug){
992
1020
avahi_set_log_function(empty_log);
993
1021
}
994
1022
997
1025
998
1026
/* Allocate main Avahi loop object */
999
1027
mc.simple_poll = avahi_simple_poll_new();
1000
if (mc.simple_poll == NULL) {
1028
if(mc.simple_poll == NULL) {
1001
1029
fprintf(stderr, "Avahi: Failed to create simple poll"
1002
1030
" object.\n");
1003
1031
exitcode = EXIT_FAILURE;
1004
1032
goto end;
1005
1033
}
1006
1034
1007
1035
{
1008
1036
AvahiServerConfig config;
1009
1037
/* Do not publish any local Zeroconf records */
1012
1040
config.publish_addresses = 0;
1013
1041
config.publish_workstation = 0;
1014
1042
config.publish_domain = 0;
1015
1043
1016
1044
/* Allocate a new server */
1017
1045
mc.server = avahi_server_new(avahi_simple_poll_get
1018
1046
(mc.simple_poll), &config, NULL,
1019
1047
NULL, &error);
1020
1048
1021
1049
/* Free the Avahi configuration data */
1022
1050
avahi_server_config_free(&config);
1023
1051
}
1024
1052
1025
1053
/* Check if creating the Avahi server object succeeded */
1026
if (mc.server == NULL) {
1054
if(mc.server == NULL) {
1027
1055
fprintf(stderr, "Failed to create Avahi server: %s\n",
1028
1056
avahi_strerror(error));
1029
1057
exitcode = EXIT_FAILURE;
1035
1063
AVAHI_PROTO_INET6,
1036
1064
"_mandos._tcp", NULL, 0,
1037
1065
browse_callback, &mc);
1038
if (sb == NULL) {
1066
if(sb == NULL) {
1039
1067
fprintf(stderr, "Failed to create service browser: %s\n",
1040
1068
avahi_strerror(avahi_server_errno(mc.server)));
1041
1069
exitcode = EXIT_FAILURE;
1043
1071
}
1044
1072
1045
1073
/* Run the main loop */
1046
1047
if (debug){
1074
1075
if(debug){
1048
1076
fprintf(stderr, "Starting Avahi loop search\n");
1049
1077
}
1050
1078
1051
1079
avahi_simple_poll_loop(mc.simple_poll);
1052
1080
1053
1081
end:
1054
1055
if (debug){
1082
1083
if(debug){
1056
1084
fprintf(stderr, "%s exiting\n", argv[0]);
1057
1085
}
1058
1086
1059
1087
/* Cleanup things */
1060
if (sb != NULL)
1088
if(sb != NULL)
1061
1089
avahi_s_service_browser_free(sb);
1062
1090
1063
if (mc.server != NULL)
1091
if(mc.server != NULL)
1064
1092
avahi_server_free(mc.server);
1065
1066
if (mc.simple_poll != NULL)
1093
1094
if(mc.simple_poll != NULL)
1067
1095
avahi_simple_poll_free(mc.simple_poll);
1068
free(pubkeyfile);
1069
free(seckeyfile);
1070
1071
if (gnutls_initalized){
1072
gnutls_certificate_free_credentials (mc.cred);
1073
gnutls_global_deinit ();
1074
}
1075
1096
1097
if(gnutls_initalized){
1098
gnutls_certificate_free_credentials(mc.cred);
1099
gnutls_global_deinit();
1100
gnutls_dh_params_deinit(mc.dh_params);
1101
}
1102
1103
if(gpgme_initalized){
1104
gpgme_release(mc.ctx);
1105
}
1106
1107
/* Removes the temp directory used by GPGME */
1108
if(tempdir[0] != '\0'){
1109
DIR *d;
1110
struct dirent *direntry;
1111
d = opendir(tempdir);
1112
if(d == NULL){
1113
if(errno != ENOENT){
1114
perror("opendir");
1115
}
1116
} else {
1117
while(true){
1118
direntry = readdir(d);
1119
if(direntry == NULL){
1120
break;
1121
}
1122
if(direntry->d_type == DT_REG){
1123
char *fullname = NULL;
1124
ret = asprintf(&fullname, "%s/%s", tempdir,
1125
direntry->d_name);
1126
if(ret < 0){
1127
perror("asprintf");
1128
continue;
1129
}
1130
ret = unlink(fullname);
1131
if(ret == -1){
1132
fprintf(stderr, "unlink(\"%s\"): %s",
1133
fullname, strerror(errno));
1134
}
1135
free(fullname);
1136
}
1137
}
1138
closedir(d);
1139
}
1140
ret = rmdir(tempdir);
1141
if(ret == -1 and errno != ENOENT){
1142
perror("rmdir");
1143
}
1144
}
1145
1076
1146
return exitcode;
1077
1147
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0