To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to plugins.d/mandos-client.c
- browse files at revision 24.1.129
- compare with another revision
- download diff
- download tarball
- view history from revision 24.1.129
- Committer: Björn Påhlsson
- Date: 2009-01-20 02:33:43 UTC
- mfrom: (280 mandos)
- mto: (24.1.154 mandos) (237.4.3 mandos-release)
- mto: This revision was merged to the branch mainline in revision 291.
- Revision ID: belorn@braxen-20090120023343-0zeh3wkm35zn80nv
merge
- 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,
38
ferror() */
38
#include <stdio.h> /* fprintf(), stderr, fwrite(),
39
stdout, ferror(), sscanf */
39
40
#include <stdint.h> /* uint16_t, uint32_t */
40
41
#include <stddef.h> /* NULL, size_t, ssize_t */
41
42
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
42
43
srand() */
43
44
#include <stdbool.h> /* bool, true */
44
45
#include <string.h> /* memset(), strcmp(), strlen(),
45
strerror(), memcpy(), strcpy() */
46
strerror(), asprintf(), strcpy() */
46
47
#include <sys/ioctl.h> /* ioctl */
47
#include <net/if.h> /* ifreq, SIOCGIFFLAGS, SIOCSIFFLAGS,
48
IFF_UP */
49
48
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
50
49
sockaddr_in6, PF_INET6,
51
50
SOCK_STREAM, INET6_ADDRSTRLEN,
52
uid_t, gid_t */
51
uid_t, gid_t, open(), opendir(),
52
DIR */
53
#include <sys/stat.h> /* open() */
53
54
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
54
55
struct in6_addr, inet_pton(),
55
56
connect() */
57
#include <fcntl.h> /* open() */
58
#include <dirent.h> /* opendir(), struct dirent, readdir()
59
*/
60
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
56
61
#include <assert.h> /* assert() */
57
62
#include <errno.h> /* perror(), errno */
58
#include <time.h> /* time() */
63
#include <time.h> /* time(), nanosleep() */
59
64
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
60
65
SIOCSIFFLAGS, if_indextoname(),
61
66
if_nametoindex(), IF_NAMESIZE */
67
#include <netinet/in.h>
62
68
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
63
69
getuid(), getgid(), setuid(),
64
70
setgid() */
65
#include <netinet/in.h>
66
71
#include <arpa/inet.h> /* inet_pton(), htons */
67
#include <iso646.h> /* not, and */
72
#include <iso646.h> /* not, and, or */
68
73
#include <argp.h> /* struct argp_option, error_t, struct
69
74
argp_state, struct argp,
70
75
argp_parse(), ARGP_KEY_ARG,
71
76
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
77
#include <sys/klog.h> /* klogctl() */
72
78
73
79
/* Avahi */
74
80
/* All Avahi types, constants and functions
82
88
#include <avahi-common/error.h>
83
89
84
90
/* GnuTLS */
85
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and functions
91
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
92
functions:
86
93
gnutls_*
87
94
init_gnutls_session(),
88
95
GNUTLS_* */
89
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
96
#include <gnutls/openpgp.h>
97
/* gnutls_certificate_set_openpgp_key_file(),
90
98
GNUTLS_OPENPGP_FMT_BASE64 */
91
99
92
100
/* GPGME */
93
#include <gpgme.h> /* All GPGME types, constants and functions
101
#include <gpgme.h> /* All GPGME types, constants and
102
functions:
94
103
gpgme_*
95
104
GPGME_PROTOCOL_OpenPGP,
96
105
GPG_ERR_NO_* */
97
106
98
107
#define BUFFER_SIZE 256
99
108
109
#define PATHDIR "/conf/conf.d/mandos"
110
#define SECKEY "seckey.txt"
111
#define PUBKEY "pubkey.txt"
112
100
113
bool debug = false;
101
static const char *keydir = "/conf/conf.d/mandos";
102
114
static const char mandos_protocol_version[] = "1";
103
const char *argp_program_version = "password-request 1.0";
115
const char *argp_program_version = "mandos-client " VERSION;
104
116
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
105
117
106
118
/* Used for passing in values through the Avahi callback functions */
111
123
unsigned int dh_bits;
112
124
gnutls_dh_params_t dh_params;
113
125
const char *priority;
126
gpgme_ctx_t ctx;
114
127
} mandos_context;
115
128
116
129
/*
120
133
*/
121
134
size_t adjustbuffer(char **buffer, size_t buffer_length,
122
135
size_t buffer_capacity){
123
if (buffer_length + BUFFER_SIZE > buffer_capacity){
136
if(buffer_length + BUFFER_SIZE > buffer_capacity){
124
137
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
125
if (buffer == NULL){
138
if(buffer == NULL){
126
139
return 0;
127
140
}
128
141
buffer_capacity += BUFFER_SIZE;
131
144
}
132
145
133
146
/*
134
* Decrypt OpenPGP data using keyrings in HOMEDIR.
135
* Returns -1 on error
147
* Initialize GPGME.
136
148
*/
137
static ssize_t pgp_packet_decrypt (const char *cryptotext,
138
size_t crypto_size,
139
char **plaintext,
140
const char *homedir){
141
gpgme_data_t dh_crypto, dh_plain;
142
gpgme_ctx_t ctx;
149
static bool init_gpgme(mandos_context *mc, const char *seckey,
150
const char *pubkey, const char *tempdir){
151
int ret;
143
152
gpgme_error_t rc;
144
ssize_t ret;
145
size_t plaintext_capacity = 0;
146
ssize_t plaintext_length = 0;
147
153
gpgme_engine_info_t engine_info;
148
154
149
if (debug){
150
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
155
156
/*
157
* Helper function to insert pub and seckey to the enigne 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");
151
193
}
152
194
153
195
/* Init GPGME */
154
196
gpgme_check_version(NULL);
155
197
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
156
if (rc != GPG_ERR_NO_ERROR){
198
if(rc != GPG_ERR_NO_ERROR){
157
199
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
158
200
gpgme_strsource(rc), gpgme_strerror(rc));
159
return -1;
201
return false;
160
202
}
161
203
162
/* Set GPGME home directory for the OpenPGP engine only */
163
rc = gpgme_get_engine_info (&engine_info);
164
if (rc != GPG_ERR_NO_ERROR){
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){
165
207
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
166
208
gpgme_strsource(rc), gpgme_strerror(rc));
167
return -1;
209
return false;
168
210
}
169
211
while(engine_info != NULL){
170
212
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
171
213
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
172
engine_info->file_name, homedir);
214
engine_info->file_name, tempdir);
173
215
break;
174
216
}
175
217
engine_info = engine_info->next;
176
218
}
177
219
if(engine_info == NULL){
178
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
179
return -1;
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");
180
255
}
181
256
182
257
/* Create new GPGME data buffer from memory cryptotext */
183
258
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
184
259
0);
185
if (rc != GPG_ERR_NO_ERROR){
260
if(rc != GPG_ERR_NO_ERROR){
186
261
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
187
262
gpgme_strsource(rc), gpgme_strerror(rc));
188
263
return -1;
190
265
191
266
/* Create new empty GPGME data buffer for the plaintext */
192
267
rc = gpgme_data_new(&dh_plain);
193
if (rc != GPG_ERR_NO_ERROR){
268
if(rc != GPG_ERR_NO_ERROR){
194
269
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
195
270
gpgme_strsource(rc), gpgme_strerror(rc));
196
271
gpgme_data_release(dh_crypto);
197
272
return -1;
198
273
}
199
274
200
/* Create new GPGME "context" */
201
rc = gpgme_new(&ctx);
202
if (rc != GPG_ERR_NO_ERROR){
203
fprintf(stderr, "bad gpgme_new: %s: %s\n",
204
gpgme_strsource(rc), gpgme_strerror(rc));
205
plaintext_length = -1;
206
goto decrypt_end;
207
}
208
209
275
/* Decrypt data from the cryptotext data buffer to the plaintext
210
276
data buffer */
211
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
212
if (rc != GPG_ERR_NO_ERROR){
277
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
278
if(rc != GPG_ERR_NO_ERROR){
213
279
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
214
280
gpgme_strsource(rc), gpgme_strerror(rc));
215
281
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
}
216
310
goto decrypt_end;
217
311
}
218
312
220
314
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
221
315
}
222
316
223
if (debug){
224
gpgme_decrypt_result_t result;
225
result = gpgme_op_decrypt_result(ctx);
226
if (result == NULL){
227
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
228
} else {
229
fprintf(stderr, "Unsupported algorithm: %s\n",
230
result->unsupported_algorithm);
231
fprintf(stderr, "Wrong key usage: %d\n",
232
result->wrong_key_usage);
233
if(result->file_name != NULL){
234
fprintf(stderr, "File name: %s\n", result->file_name);
235
}
236
gpgme_recipient_t recipient;
237
recipient = result->recipients;
238
if(recipient){
239
while(recipient != NULL){
240
fprintf(stderr, "Public key algorithm: %s\n",
241
gpgme_pubkey_algo_name(recipient->pubkey_algo));
242
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
243
fprintf(stderr, "Secret key available: %s\n",
244
recipient->status == GPG_ERR_NO_SECKEY
245
? "No" : "Yes");
246
recipient = recipient->next;
247
}
248
}
249
}
250
}
251
252
317
/* Seek back to the beginning of the GPGME plaintext data buffer */
253
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
254
perror("pgpme_data_seek");
318
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
319
perror("gpgme_data_seek");
255
320
plaintext_length = -1;
256
321
goto decrypt_end;
257
322
}
261
326
plaintext_capacity = adjustbuffer(plaintext,
262
327
(size_t)plaintext_length,
263
328
plaintext_capacity);
264
if (plaintext_capacity == 0){
329
if(plaintext_capacity == 0){
265
330
perror("adjustbuffer");
266
331
plaintext_length = -1;
267
332
goto decrypt_end;
270
335
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
271
336
BUFFER_SIZE);
272
337
/* Print the data, if any */
273
if (ret == 0){
338
if(ret == 0){
274
339
/* EOF */
275
340
break;
276
341
}
281
346
}
282
347
plaintext_length += ret;
283
348
}
284
349
285
350
if(debug){
286
351
fprintf(stderr, "Decrypted password is: ");
287
352
for(ssize_t i = 0; i < plaintext_length; i++){
300
365
return plaintext_length;
301
366
}
302
367
303
static const char * safer_gnutls_strerror (int value) {
304
const char *ret = gnutls_strerror (value);
305
if (ret == NULL)
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)
306
372
ret = "(unknown)";
307
373
return ret;
308
374
}
314
380
}
315
381
316
382
static int init_gnutls_global(mandos_context *mc,
317
const char *pubkeyfile,
318
const char *seckeyfile){
383
const char *pubkeyfilename,
384
const char *seckeyfilename){
319
385
int ret;
320
386
321
387
if(debug){
323
389
}
324
390
325
391
ret = gnutls_global_init();
326
if (ret != GNUTLS_E_SUCCESS) {
327
fprintf (stderr, "GnuTLS global_init: %s\n",
328
safer_gnutls_strerror(ret));
392
if(ret != GNUTLS_E_SUCCESS) {
393
fprintf(stderr, "GnuTLS global_init: %s\n",
394
safer_gnutls_strerror(ret));
329
395
return -1;
330
396
}
331
397
332
if (debug){
398
if(debug){
333
399
/* "Use a log level over 10 to enable all debugging options."
334
400
* - GnuTLS manual
335
401
*/
339
405
340
406
/* OpenPGP credentials */
341
407
gnutls_certificate_allocate_credentials(&mc->cred);
342
if (ret != GNUTLS_E_SUCCESS){
343
fprintf (stderr, "GnuTLS memory error: %s\n",
344
safer_gnutls_strerror(ret));
345
gnutls_global_deinit ();
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();
346
415
return -1;
347
416
}
348
417
349
418
if(debug){
350
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
351
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
352
seckeyfile);
419
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
420
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
421
seckeyfilename);
353
422
}
354
423
355
424
ret = gnutls_certificate_set_openpgp_key_file
356
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
357
if (ret != GNUTLS_E_SUCCESS) {
425
(mc->cred, pubkeyfilename, seckeyfilename,
426
GNUTLS_OPENPGP_FMT_BASE64);
427
if(ret != GNUTLS_E_SUCCESS) {
358
428
fprintf(stderr,
359
429
"Error[%d] while reading the OpenPGP key pair ('%s',"
360
" '%s')\n", ret, pubkeyfile, seckeyfile);
361
fprintf(stdout, "The GnuTLS error is: %s\n",
430
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
431
fprintf(stderr, "The GnuTLS error is: %s\n",
362
432
safer_gnutls_strerror(ret));
363
433
goto globalfail;
364
434
}
365
435
366
436
/* GnuTLS server initialization */
367
437
ret = gnutls_dh_params_init(&mc->dh_params);
368
if (ret != GNUTLS_E_SUCCESS) {
369
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
370
" %s\n", safer_gnutls_strerror(ret));
438
if(ret != GNUTLS_E_SUCCESS) {
439
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
440
" %s\n", safer_gnutls_strerror(ret));
371
441
goto globalfail;
372
442
}
373
443
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
374
if (ret != GNUTLS_E_SUCCESS) {
375
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
376
safer_gnutls_strerror(ret));
444
if(ret != GNUTLS_E_SUCCESS) {
445
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
446
safer_gnutls_strerror(ret));
377
447
goto globalfail;
378
448
}
379
449
380
450
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
381
451
382
452
return 0;
383
453
384
454
globalfail:
385
455
386
456
gnutls_certificate_free_credentials(mc->cred);
387
457
gnutls_global_deinit();
458
gnutls_dh_params_deinit(mc->dh_params);
388
459
return -1;
389
390
460
}
391
461
392
462
static int init_gnutls_session(mandos_context *mc,
394
464
int ret;
395
465
/* GnuTLS session creation */
396
466
ret = gnutls_init(session, GNUTLS_SERVER);
397
if (ret != GNUTLS_E_SUCCESS){
467
if(ret != GNUTLS_E_SUCCESS){
398
468
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
399
469
safer_gnutls_strerror(ret));
400
470
}
402
472
{
403
473
const char *err;
404
474
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
405
if (ret != GNUTLS_E_SUCCESS) {
475
if(ret != GNUTLS_E_SUCCESS) {
406
476
fprintf(stderr, "Syntax error at: %s\n", err);
407
477
fprintf(stderr, "GnuTLS error: %s\n",
408
478
safer_gnutls_strerror(ret));
409
gnutls_deinit (*session);
479
gnutls_deinit(*session);
410
480
return -1;
411
481
}
412
482
}
413
483
414
484
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
415
485
mc->cred);
416
if (ret != GNUTLS_E_SUCCESS) {
486
if(ret != GNUTLS_E_SUCCESS) {
417
487
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
418
488
safer_gnutls_strerror(ret));
419
gnutls_deinit (*session);
489
gnutls_deinit(*session);
420
490
return -1;
421
491
}
422
492
423
493
/* ignore client certificate if any. */
424
gnutls_certificate_server_set_request (*session,
425
GNUTLS_CERT_IGNORE);
494
gnutls_certificate_server_set_request(*session,
495
GNUTLS_CERT_IGNORE);
426
496
427
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
497
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
428
498
429
499
return 0;
430
500
}
438
508
AvahiIfIndex if_index,
439
509
mandos_context *mc){
440
510
int ret, tcp_sd;
511
ssize_t sret;
441
512
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
442
513
char *buffer = NULL;
443
514
char *decrypted_buffer;
449
520
char interface[IF_NAMESIZE];
450
521
gnutls_session_t session;
451
522
452
ret = init_gnutls_session (mc, &session);
453
if (ret != 0){
523
ret = init_gnutls_session(mc, &session);
524
if(ret != 0){
454
525
return -1;
455
526
}
456
527
457
528
if(debug){
458
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
459
ip, port);
529
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
530
"\n", ip, port);
460
531
}
461
532
462
533
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
464
535
perror("socket");
465
536
return -1;
466
537
}
467
538
468
539
if(debug){
469
540
if(if_indextoname((unsigned int)if_index, interface) == NULL){
470
541
perror("if_indextoname");
473
544
fprintf(stderr, "Binding to interface %s\n", interface);
474
545
}
475
546
476
memset(&to,0,sizeof(to)); /* Spurious warning */
547
memset(&to, 0, sizeof(to));
477
548
to.in6.sin6_family = AF_INET6;
478
549
/* It would be nice to have a way to detect if we were passed an
479
550
IPv4 address here. Now we assume an IPv6 address. */
480
551
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
481
if (ret < 0 ){
552
if(ret < 0 ){
482
553
perror("inet_pton");
483
554
return -1;
484
555
}
486
557
fprintf(stderr, "Bad address: %s\n", ip);
487
558
return -1;
488
559
}
489
to.in6.sin6_port = htons(port); /* Spurious warning */
560
to.in6.sin6_port = htons(port); /* Spurious warnings from
561
-Wconversion and
562
-Wunreachable-code */
490
563
491
564
to.in6.sin6_scope_id = (uint32_t)if_index;
492
565
493
566
if(debug){
494
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
567
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
568
port);
495
569
char addrstr[INET6_ADDRSTRLEN] = "";
496
570
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
497
571
sizeof(addrstr)) == NULL){
504
578
}
505
579
506
580
ret = connect(tcp_sd, &to.in, sizeof(to));
507
if (ret < 0){
581
if(ret < 0){
508
582
perror("connect");
509
583
return -1;
510
584
}
511
585
512
586
const char *out = mandos_protocol_version;
513
587
written = 0;
514
while (true){
588
while(true){
515
589
size_t out_size = strlen(out);
516
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
590
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
517
591
out_size - written));
518
if (ret == -1){
592
if(ret == -1){
519
593
perror("write");
520
594
retval = -1;
521
595
goto mandos_end;
524
598
if(written < out_size){
525
599
continue;
526
600
} else {
527
if (out == mandos_protocol_version){
601
if(out == mandos_protocol_version){
528
602
written = 0;
529
603
out = "\r\n";
530
604
} else {
532
606
}
533
607
}
534
608
}
535
609
536
610
if(debug){
537
611
fprintf(stderr, "Establishing TLS session with %s\n", ip);
538
612
}
539
613
540
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
541
614
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
615
542
616
do{
543
ret = gnutls_handshake (session);
617
ret = gnutls_handshake(session);
544
618
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
545
619
546
if (ret != GNUTLS_E_SUCCESS){
620
if(ret != GNUTLS_E_SUCCESS){
547
621
if(debug){
548
622
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
549
gnutls_perror (ret);
623
gnutls_perror(ret);
550
624
}
551
625
retval = -1;
552
626
goto mandos_end;
558
632
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
559
633
ip);
560
634
}
561
635
562
636
while(true){
563
637
buffer_capacity = adjustbuffer(&buffer, buffer_length,
564
638
buffer_capacity);
565
if (buffer_capacity == 0){
639
if(buffer_capacity == 0){
566
640
perror("adjustbuffer");
567
641
retval = -1;
568
642
goto mandos_end;
569
643
}
570
644
571
ret = gnutls_record_recv(session, buffer+buffer_length,
572
BUFFER_SIZE);
573
if (ret == 0){
645
sret = gnutls_record_recv(session, buffer+buffer_length,
646
BUFFER_SIZE);
647
if(sret == 0){
574
648
break;
575
649
}
576
if (ret < 0){
577
switch(ret){
650
if(sret < 0){
651
switch(sret){
578
652
case GNUTLS_E_INTERRUPTED:
579
653
case GNUTLS_E_AGAIN:
580
654
break;
581
655
case GNUTLS_E_REHANDSHAKE:
582
656
do{
583
ret = gnutls_handshake (session);
657
ret = gnutls_handshake(session);
584
658
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
585
if (ret < 0){
659
if(ret < 0){
586
660
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
587
gnutls_perror (ret);
661
gnutls_perror(ret);
588
662
retval = -1;
589
663
goto mandos_end;
590
664
}
593
667
fprintf(stderr, "Unknown error while reading data from"
594
668
" encrypted session with Mandos server\n");
595
669
retval = -1;
596
gnutls_bye (session, GNUTLS_SHUT_RDWR);
670
gnutls_bye(session, GNUTLS_SHUT_RDWR);
597
671
goto mandos_end;
598
672
}
599
673
} else {
600
buffer_length += (size_t) ret;
674
buffer_length += (size_t) sret;
601
675
}
602
676
}
603
677
605
679
fprintf(stderr, "Closing TLS session\n");
606
680
}
607
681
608
gnutls_bye (session, GNUTLS_SHUT_RDWR);
682
gnutls_bye(session, GNUTLS_SHUT_RDWR);
609
683
610
if (buffer_length > 0){
611
decrypted_buffer_size = pgp_packet_decrypt(buffer,
684
if(buffer_length > 0){
685
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
612
686
buffer_length,
613
&decrypted_buffer,
614
keydir);
615
if (decrypted_buffer_size >= 0){
687
&decrypted_buffer);
688
if(decrypted_buffer_size >= 0){
616
689
written = 0;
617
690
while(written < (size_t) decrypted_buffer_size){
618
ret = (int)fwrite (decrypted_buffer + written, 1,
619
(size_t)decrypted_buffer_size - written,
620
stdout);
691
ret = (int)fwrite(decrypted_buffer + written, 1,
692
(size_t)decrypted_buffer_size - written,
693
stdout);
621
694
if(ret == 0 and ferror(stdout)){
622
695
if(debug){
623
696
fprintf(stderr, "Error writing encrypted data: %s\n",
632
705
} else {
633
706
retval = -1;
634
707
}
708
} else {
709
retval = -1;
635
710
}
636
711
637
712
/* Shutdown procedure */
638
713
639
714
mandos_end:
640
715
free(buffer);
641
close(tcp_sd);
642
gnutls_deinit (session);
716
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
717
if(ret == -1){
718
perror("close");
719
}
720
gnutls_deinit(session);
643
721
return retval;
644
722
}
645
723
658
736
flags,
659
737
void* userdata) {
660
738
mandos_context *mc = userdata;
661
assert(r); /* Spurious warning */
739
assert(r);
662
740
663
741
/* Called whenever a service has been resolved successfully or
664
742
timed out */
665
743
666
switch (event) {
744
switch(event) {
667
745
default:
668
746
case AVAHI_RESOLVER_FAILURE:
669
747
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
676
754
char ip[AVAHI_ADDRESS_STR_MAX];
677
755
avahi_address_snprint(ip, sizeof(ip), address);
678
756
if(debug){
679
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
680
" port %d\n", name, host_name, ip, interface, port);
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);
681
760
}
682
761
int ret = start_mandos_communication(ip, port, interface, mc);
683
if (ret == 0){
684
exit(EXIT_SUCCESS);
762
if(ret == 0){
763
avahi_simple_poll_quit(mc->simple_poll);
685
764
}
686
765
}
687
766
}
699
778
flags,
700
779
void* userdata) {
701
780
mandos_context *mc = userdata;
702
assert(b); /* Spurious warning */
781
assert(b);
703
782
704
783
/* Called whenever a new services becomes available on the LAN or
705
784
is removed from the LAN */
706
785
707
switch (event) {
786
switch(event) {
708
787
default:
709
788
case AVAHI_BROWSER_FAILURE:
710
789
719
798
the callback function is called the Avahi server will free the
720
799
resolver for us. */
721
800
722
if (!(avahi_s_service_resolver_new(mc->server, interface,
801
if(!(avahi_s_service_resolver_new(mc->server, interface,
723
802
protocol, name, type, domain,
724
803
AVAHI_PROTO_INET6, 0,
725
804
resolve_callback, mc)))
739
818
}
740
819
}
741
820
742
/* Combines file name and path and returns the malloced new
743
string. some sane checks could/should be added */
744
static const char *combinepath(const char *first, const char *second){
745
size_t f_len = strlen(first);
746
size_t s_len = strlen(second);
747
char *tmp = malloc(f_len + s_len + 2);
748
if (tmp == NULL){
749
return NULL;
750
}
751
if(f_len > 0){
752
memcpy(tmp, first, f_len); /* Spurious warning */
753
}
754
tmp[f_len] = '/';
755
if(s_len > 0){
756
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
757
}
758
tmp[f_len + 1 + s_len] = '\0';
759
return tmp;
760
}
761
762
763
821
int main(int argc, char *argv[]){
764
822
AvahiSServiceBrowser *sb = NULL;
765
823
int error;
766
824
int ret;
825
intmax_t tmpmax;
826
int numchars;
767
827
int exitcode = EXIT_SUCCESS;
768
828
const char *interface = "eth0";
769
829
struct ifreq network;
771
831
uid_t uid;
772
832
gid_t gid;
773
833
char *connect_to = NULL;
834
char tempdir[] = "/tmp/mandosXXXXXX";
774
835
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
775
const char *pubkeyfile = "pubkey.txt";
776
const char *seckeyfile = "seckey.txt";
836
const char *seckey = PATHDIR "/" SECKEY;
837
const char *pubkey = PATHDIR "/" PUBKEY;
838
777
839
mandos_context mc = { .simple_poll = NULL, .server = NULL,
778
.dh_bits = 1024, .priority = "SECURE256"};
840
.dh_bits = 1024, .priority = "SECURE256"
841
":!CTYPE-X.509:+CTYPE-OPENPGP" };
779
842
bool gnutls_initalized = false;
843
bool gpgme_initalized = false;
844
double delay = 2.5;
780
845
781
846
{
782
847
struct argp_option options[] = {
783
848
{ .name = "debug", .key = 128,
784
849
.doc = "Debug mode", .group = 3 },
785
850
{ .name = "connect", .key = 'c',
786
.arg = "IP",
787
.doc = "Connect directly to a sepcified mandos server",
851
.arg = "ADDRESS:PORT",
852
.doc = "Connect directly to a specific Mandos server",
788
853
.group = 1 },
789
854
{ .name = "interface", .key = 'i',
790
.arg = "INTERFACE",
791
.doc = "Interface that Avahi will conntect through",
792
.group = 1 },
793
{ .name = "keydir", .key = 'd',
794
.arg = "KEYDIR",
795
.doc = "Directory where the openpgp keyring is",
855
.arg = "NAME",
856
.doc = "Interface that will be used to search for Mandos"
857
" servers",
796
858
.group = 1 },
797
859
{ .name = "seckey", .key = 's',
798
.arg = "SECKEY",
799
.doc = "Secret openpgp key for gnutls authentication",
860
.arg = "FILE",
861
.doc = "OpenPGP secret key file base name",
800
862
.group = 1 },
801
863
{ .name = "pubkey", .key = 'p',
802
.arg = "PUBKEY",
803
.doc = "Public openpgp key for gnutls authentication",
864
.arg = "FILE",
865
.doc = "OpenPGP public key file base name",
804
866
.group = 2 },
805
867
{ .name = "dh-bits", .key = 129,
806
868
.arg = "BITS",
807
.doc = "dh-bits to use in gnutls communication",
869
.doc = "Bit length of the prime number used in the"
870
" Diffie-Hellman key exchange",
808
871
.group = 2 },
809
872
{ .name = "priority", .key = 130,
810
.arg = "PRIORITY",
811
.doc = "GNUTLS priority", .group = 1 },
873
.arg = "STRING",
874
.doc = "GnuTLS priority string for the TLS handshake",
875
.group = 1 },
876
{ .name = "delay", .key = 131,
877
.arg = "SECONDS",
878
.doc = "Maximum delay to wait for interface startup",
879
.group = 2 },
812
880
{ .name = NULL }
813
881
};
814
815
882
816
error_t parse_opt (int key, char *arg,
817
struct argp_state *state) {
818
/* Get the INPUT argument from `argp_parse', which we know is
819
a pointer to our plugin list pointer. */
820
switch (key) {
821
case 128:
883
error_t parse_opt(int key, char *arg,
884
struct argp_state *state) {
885
switch(key) {
886
case 128: /* --debug */
822
887
debug = true;
823
888
break;
824
case 'c':
889
case 'c': /* --connect */
825
890
connect_to = arg;
826
891
break;
827
case 'i':
892
case 'i': /* --interface */
828
893
interface = arg;
829
894
break;
830
case 'd':
831
keydir = arg;
832
break;
833
case 's':
834
seckeyfile = arg;
835
break;
836
case 'p':
837
pubkeyfile = arg;
838
break;
839
case 129:
840
errno = 0;
841
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
842
if (errno){
843
perror("strtol");
895
case 's': /* --seckey */
896
seckey = arg;
897
break;
898
case 'p': /* --pubkey */
899
pubkey = arg;
900
break;
901
case 129: /* --dh-bits */
902
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
903
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
904
or arg[numchars] != '\0'){
905
fprintf(stderr, "Bad number of DH bits\n");
844
906
exit(EXIT_FAILURE);
845
907
}
908
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
846
909
break;
847
case 130:
910
case 130: /* --priority */
848
911
mc.priority = arg;
849
912
break;
913
case 131: /* --delay */
914
ret = sscanf(arg, "%lf%n", &delay, &numchars);
915
if(ret < 1 or arg[numchars] != '\0'){
916
fprintf(stderr, "Bad delay\n");
917
exit(EXIT_FAILURE);
918
}
919
break;
850
920
case ARGP_KEY_ARG:
851
argp_usage (state);
921
argp_usage(state);
922
case ARGP_KEY_END:
852
923
break;
853
case ARGP_KEY_END:
854
break;
855
924
default:
856
925
return ARGP_ERR_UNKNOWN;
857
926
}
858
927
return 0;
859
928
}
860
929
861
930
struct argp argp = { .options = options, .parser = parse_opt,
862
931
.args_doc = "",
863
932
.doc = "Mandos client -- Get and decrypt"
864
" passwords from mandos server" };
865
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
866
if (ret == ARGP_ERR_UNKNOWN){
867
fprintf(stderr, "Unkown error while parsing arguments\n");
868
exitcode = EXIT_FAILURE;
869
goto end;
870
}
871
}
872
873
pubkeyfile = combinepath(keydir, pubkeyfile);
874
if (pubkeyfile == NULL){
875
perror("combinepath");
876
exitcode = EXIT_FAILURE;
877
goto end;
878
}
879
880
seckeyfile = combinepath(keydir, seckeyfile);
881
if (seckeyfile == NULL){
882
perror("combinepath");
883
goto end;
884
}
885
886
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
887
if (ret == -1){
888
fprintf(stderr, "init_gnutls_global\n");
889
goto end;
890
} else {
891
gnutls_initalized = true;
892
}
893
933
" passwords from a Mandos server" };
934
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
935
if(ret == ARGP_ERR_UNKNOWN){
936
fprintf(stderr, "Unknown error while parsing arguments\n");
937
exitcode = EXIT_FAILURE;
938
goto end;
939
}
940
}
941
942
/* If the interface is down, bring it up */
943
{
944
// Lower kernel loglevel to KERN_NOTICE to avoid
945
// KERN_INFO messages to mess up the prompt
946
ret = klogctl(8, NULL, 5);
947
if(ret == -1){
948
perror("klogctl");
949
}
950
951
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
952
if(sd < 0) {
953
perror("socket");
954
exitcode = EXIT_FAILURE;
955
ret = klogctl(7, NULL, 0);
956
if(ret == -1){
957
perror("klogctl");
958
}
959
goto end;
960
}
961
strcpy(network.ifr_name, interface);
962
ret = ioctl(sd, SIOCGIFFLAGS, &network);
963
if(ret == -1){
964
perror("ioctl SIOCGIFFLAGS");
965
ret = klogctl(7, NULL, 0);
966
if(ret == -1){
967
perror("klogctl");
968
}
969
exitcode = EXIT_FAILURE;
970
goto end;
971
}
972
if((network.ifr_flags & IFF_UP) == 0){
973
network.ifr_flags |= IFF_UP;
974
ret = ioctl(sd, SIOCSIFFLAGS, &network);
975
if(ret == -1){
976
perror("ioctl SIOCSIFFLAGS");
977
exitcode = EXIT_FAILURE;
978
ret = klogctl(7, NULL, 0);
979
if(ret == -1){
980
perror("klogctl");
981
}
982
goto end;
983
}
984
}
985
// sleep checking until interface is running
986
for(int i=0; i < delay * 4; i++){
987
ret = ioctl(sd, SIOCGIFFLAGS, &network);
988
if(ret == -1){
989
perror("ioctl SIOCGIFFLAGS");
990
} else if(network.ifr_flags & IFF_RUNNING){
991
break;
992
}
993
struct timespec sleeptime = { .tv_nsec = 250000000 };
994
nanosleep(&sleeptime, NULL);
995
}
996
ret = (int)TEMP_FAILURE_RETRY(close(sd));
997
if(ret == -1){
998
perror("close");
999
}
1000
// Restores kernel loglevel to default
1001
ret = klogctl(7, NULL, 0);
1002
if(ret == -1){
1003
perror("klogctl");
1004
}
1005
}
1006
894
1007
uid = getuid();
895
1008
gid = getgid();
896
1009
897
1010
ret = setuid(uid);
898
if (ret == -1){
1011
if(ret == -1){
899
1012
perror("setuid");
900
1013
}
901
1014
902
1015
setgid(gid);
903
if (ret == -1){
1016
if(ret == -1){
904
1017
perror("setgid");
905
1018
}
906
1019
1020
ret = init_gnutls_global(&mc, pubkey, seckey);
1021
if(ret == -1){
1022
fprintf(stderr, "init_gnutls_global failed\n");
1023
exitcode = EXIT_FAILURE;
1024
goto end;
1025
} else {
1026
gnutls_initalized = true;
1027
}
1028
1029
if(mkdtemp(tempdir) == NULL){
1030
perror("mkdtemp");
1031
tempdir[0] = '\0';
1032
goto end;
1033
}
1034
1035
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
1036
fprintf(stderr, "gpgme_initalized failed\n");
1037
exitcode = EXIT_FAILURE;
1038
goto end;
1039
} else {
1040
gpgme_initalized = true;
1041
}
1042
907
1043
if_index = (AvahiIfIndex) if_nametoindex(interface);
908
1044
if(if_index == 0){
909
1045
fprintf(stderr, "No such interface: \"%s\"\n", interface);
919
1055
exitcode = EXIT_FAILURE;
920
1056
goto end;
921
1057
}
922
errno = 0;
923
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
924
if(errno){
925
perror("Bad port number");
1058
uint16_t port;
1059
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1060
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1061
or address[numchars+1] != '\0'){
1062
fprintf(stderr, "Bad port number\n");
926
1063
exitcode = EXIT_FAILURE;
927
1064
goto end;
928
1065
}
1066
port = (uint16_t)tmpmax;
929
1067
*address = '\0';
930
1068
address = connect_to;
931
1069
ret = start_mandos_communication(address, port, if_index, &mc);
937
1075
goto end;
938
1076
}
939
1077
940
/* If the interface is down, bring it up */
941
{
942
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
943
if(sd < 0) {
944
perror("socket");
945
exitcode = EXIT_FAILURE;
946
goto end;
947
}
948
strcpy(network.ifr_name, interface); /* Spurious warning */
949
ret = ioctl(sd, SIOCGIFFLAGS, &network);
950
if(ret == -1){
951
perror("ioctl SIOCGIFFLAGS");
952
exitcode = EXIT_FAILURE;
953
goto end;
954
}
955
if((network.ifr_flags & IFF_UP) == 0){
956
network.ifr_flags |= IFF_UP;
957
ret = ioctl(sd, SIOCSIFFLAGS, &network);
958
if(ret == -1){
959
perror("ioctl SIOCSIFFLAGS");
960
exitcode = EXIT_FAILURE;
961
goto end;
962
}
963
}
964
close(sd);
965
}
966
967
if (not debug){
1078
if(not debug){
968
1079
avahi_set_log_function(empty_log);
969
1080
}
970
1081
973
1084
974
1085
/* Allocate main Avahi loop object */
975
1086
mc.simple_poll = avahi_simple_poll_new();
976
if (mc.simple_poll == NULL) {
1087
if(mc.simple_poll == NULL) {
977
1088
fprintf(stderr, "Avahi: Failed to create simple poll"
978
1089
" object.\n");
979
1090
exitcode = EXIT_FAILURE;
980
1091
goto end;
981
1092
}
982
1093
983
1094
{
984
1095
AvahiServerConfig config;
985
1096
/* Do not publish any local Zeroconf records */
988
1099
config.publish_addresses = 0;
989
1100
config.publish_workstation = 0;
990
1101
config.publish_domain = 0;
991
1102
992
1103
/* Allocate a new server */
993
1104
mc.server = avahi_server_new(avahi_simple_poll_get
994
1105
(mc.simple_poll), &config, NULL,
995
1106
NULL, &error);
996
1107
997
1108
/* Free the Avahi configuration data */
998
1109
avahi_server_config_free(&config);
999
1110
}
1000
1111
1001
1112
/* Check if creating the Avahi server object succeeded */
1002
if (mc.server == NULL) {
1113
if(mc.server == NULL) {
1003
1114
fprintf(stderr, "Failed to create Avahi server: %s\n",
1004
1115
avahi_strerror(error));
1005
1116
exitcode = EXIT_FAILURE;
1011
1122
AVAHI_PROTO_INET6,
1012
1123
"_mandos._tcp", NULL, 0,
1013
1124
browse_callback, &mc);
1014
if (sb == NULL) {
1125
if(sb == NULL) {
1015
1126
fprintf(stderr, "Failed to create service browser: %s\n",
1016
1127
avahi_strerror(avahi_server_errno(mc.server)));
1017
1128
exitcode = EXIT_FAILURE;
1019
1130
}
1020
1131
1021
1132
/* Run the main loop */
1022
1023
if (debug){
1133
1134
if(debug){
1024
1135
fprintf(stderr, "Starting Avahi loop search\n");
1025
1136
}
1026
1137
1027
1138
avahi_simple_poll_loop(mc.simple_poll);
1028
1139
1029
1140
end:
1030
1031
if (debug){
1141
1142
if(debug){
1032
1143
fprintf(stderr, "%s exiting\n", argv[0]);
1033
1144
}
1034
1145
1035
1146
/* Cleanup things */
1036
if (sb != NULL)
1147
if(sb != NULL)
1037
1148
avahi_s_service_browser_free(sb);
1038
1149
1039
if (mc.server != NULL)
1150
if(mc.server != NULL)
1040
1151
avahi_server_free(mc.server);
1041
1042
if (mc.simple_poll != NULL)
1152
1153
if(mc.simple_poll != NULL)
1043
1154
avahi_simple_poll_free(mc.simple_poll);
1044
free(pubkeyfile);
1045
free(seckeyfile);
1046
1047
if (gnutls_initalized){
1155
1156
if(gnutls_initalized){
1048
1157
gnutls_certificate_free_credentials(mc.cred);
1049
gnutls_global_deinit ();
1050
}
1051
1158
gnutls_global_deinit();
1159
gnutls_dh_params_deinit(mc.dh_params);
1160
}
1161
1162
if(gpgme_initalized){
1163
gpgme_release(mc.ctx);
1164
}
1165
1166
/* Removes the temp directory used by GPGME */
1167
if(tempdir[0] != '\0'){
1168
DIR *d;
1169
struct dirent *direntry;
1170
d = opendir(tempdir);
1171
if(d == NULL){
1172
if(errno != ENOENT){
1173
perror("opendir");
1174
}
1175
} else {
1176
while(true){
1177
direntry = readdir(d);
1178
if(direntry == NULL){
1179
break;
1180
}
1181
if(direntry->d_type == DT_REG){
1182
char *fullname = NULL;
1183
ret = asprintf(&fullname, "%s/%s", tempdir,
1184
direntry->d_name);
1185
if(ret < 0){
1186
perror("asprintf");
1187
continue;
1188
}
1189
ret = unlink(fullname);
1190
if(ret == -1){
1191
fprintf(stderr, "unlink(\"%s\"): %s",
1192
fullname, strerror(errno));
1193
}
1194
free(fullname);
1195
}
1196
}
1197
closedir(d);
1198
}
1199
ret = rmdir(tempdir);
1200
if(ret == -1 and errno != ENOENT){
1201
perror("rmdir");
1202
}
1203
}
1204
1052
1205
return exitcode;
1053
1206
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0