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- Committer: Björn Påhlsson
- Date: 2008-08-08 01:25:27 UTC
- mfrom: (49 mandos)
- mto: (24.1.154 mandos) (237.4.3 mandos-release)
- mto: This revision was merged to the branch mainline in revision 50.
- Revision ID: belorn@braxen-20080808012527-s03r8xd2b20ncon0
merge
- files added:
- network-protocol.txt
- files removed:
- .bzr-builddeb
- debian
- debian/po
- files renamed:
- plugin-runner.c => mandos-client.c
- plugins.d/mandos-client.c => plugins.d/password-request.c
- files modified:
- Makefile
added
removed
plugins.d/password-request.c
1
1
/* -*- coding: utf-8 -*- */
2
2
/*
3
* Mandos-client - get and decrypt data from a Mandos server
3
* Mandos client - get and decrypt data from a Mandos server
4
4
*
5
5
* This program is partly derived from an example program for an Avahi
6
6
* service browser, downloaded from
9
9
* "browse_callback", and parts of "main".
10
10
*
11
11
* Everything else is
12
* Copyright © 2008,2009 Teddy Hogeborn
13
* Copyright © 2008,2009 Björn Påhlsson
12
* Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
14
13
*
15
14
* This program is free software: you can redistribute it and/or
16
15
* modify it under the terms of the GNU General Public License as
33
32
#define _LARGEFILE_SOURCE
34
33
#define _FILE_OFFSET_BITS 64
35
34
36
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
37
36
38
#include <stdio.h> /* fprintf(), stderr, fwrite(),
39
stdout, ferror(), sscanf(),
40
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> /* nanosleep(), 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 */
78
#include <sys/klog.h> /* klogctl() */
45
SIOCSIFFLAGS */
79
46
80
/* Avahi */
81
/* All Avahi types, constants and functions
82
Avahi*, avahi_*,
83
AVAHI_* */
84
47
#include <avahi-core/core.h>
85
48
#include <avahi-core/lookup.h>
86
49
#include <avahi-core/log.h>
88
51
#include <avahi-common/malloc.h>
89
52
#include <avahi-common/error.h>
90
53
91
/* GnuTLS */
92
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
93
functions:
94
gnutls_*
95
init_gnutls_session(),
96
GNUTLS_* */
97
#include <gnutls/openpgp.h>
98
/* gnutls_certificate_set_openpgp_key_file(),
99
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 */
100
60
61
#include <unistd.h> /* close() */
62
#include <netinet/in.h>
63
#include <stdbool.h> /* true */
64
#include <string.h> /* memset */
65
#include <arpa/inet.h> /* inet_pton() */
66
#include <iso646.h> /* not */
67
#include <net/if.h> /* IF_NAMESIZE */
68
#include <argp.h> /* struct argp_option,
69
struct argp_state, struct argp,
70
argp_parse() */
101
71
/* GPGME */
102
#include <gpgme.h> /* All GPGME types, constants and
103
functions:
104
gpgme_*
105
GPGME_PROTOCOL_OpenPGP,
106
GPG_ERR_NO_* */
72
#include <errno.h> /* perror() */
73
#include <gpgme.h>
107
74
108
75
#define BUFFER_SIZE 256
109
76
110
#define PATHDIR "/conf/conf.d/mandos"
111
#define SECKEY "seckey.txt"
112
#define PUBKEY "pubkey.txt"
113
114
77
bool debug = false;
78
static const char *keydir = "/conf/conf.d/mandos";
115
79
static const char mandos_protocol_version[] = "1";
116
const char *argp_program_version = "mandos-client " VERSION;
80
const char *argp_program_version = "mandosclient 0.9";
117
81
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
118
82
119
83
/* Used for passing in values through the Avahi callback functions */
124
88
unsigned int dh_bits;
125
89
gnutls_dh_params_t dh_params;
126
90
const char *priority;
127
gpgme_ctx_t ctx;
128
91
} mandos_context;
129
92
130
93
/*
134
97
*/
135
98
size_t adjustbuffer(char **buffer, size_t buffer_length,
136
99
size_t buffer_capacity){
137
if(buffer_length + BUFFER_SIZE > buffer_capacity){
100
if (buffer_length + BUFFER_SIZE > buffer_capacity){
138
101
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
139
if(buffer == NULL){
102
if (buffer == NULL){
140
103
return 0;
141
104
}
142
105
buffer_capacity += BUFFER_SIZE;
145
108
}
146
109
147
110
/*
148
* Initialize GPGME.
111
* Decrypt OpenPGP data using keyrings in HOMEDIR.
112
* Returns -1 on error
149
113
*/
150
static bool init_gpgme(mandos_context *mc, const char *seckey,
151
const char *pubkey, const char *tempdir){
152
int ret;
114
static ssize_t pgp_packet_decrypt (const char *cryptotext,
115
size_t crypto_size,
116
char **plaintext,
117
const char *homedir){
118
gpgme_data_t dh_crypto, dh_plain;
119
gpgme_ctx_t ctx;
153
120
gpgme_error_t rc;
121
ssize_t ret;
122
size_t plaintext_capacity = 0;
123
ssize_t plaintext_length = 0;
154
124
gpgme_engine_info_t engine_info;
155
125
156
157
/*
158
* Helper function to insert pub and seckey to the engine keyring.
159
*/
160
bool import_key(const char *filename){
161
int fd;
162
gpgme_data_t pgp_data;
163
164
fd = (int)TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
165
if(fd == -1){
166
perror("open");
167
return false;
168
}
169
170
rc = gpgme_data_new_from_fd(&pgp_data, fd);
171
if(rc != GPG_ERR_NO_ERROR){
172
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
173
gpgme_strsource(rc), gpgme_strerror(rc));
174
return false;
175
}
176
177
rc = gpgme_op_import(mc->ctx, pgp_data);
178
if(rc != GPG_ERR_NO_ERROR){
179
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
180
gpgme_strsource(rc), gpgme_strerror(rc));
181
return false;
182
}
183
184
ret = (int)TEMP_FAILURE_RETRY(close(fd));
185
if(ret == -1){
186
perror("close");
187
}
188
gpgme_data_release(pgp_data);
189
return true;
190
}
191
192
if(debug){
193
fprintf(stderr, "Initialize gpgme\n");
126
if (debug){
127
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
194
128
}
195
129
196
130
/* Init GPGME */
197
131
gpgme_check_version(NULL);
198
132
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
199
if(rc != GPG_ERR_NO_ERROR){
133
if (rc != GPG_ERR_NO_ERROR){
200
134
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
201
135
gpgme_strsource(rc), gpgme_strerror(rc));
202
return false;
136
return -1;
203
137
}
204
138
205
/* Set GPGME home directory for the OpenPGP engine only */
206
rc = gpgme_get_engine_info(&engine_info);
207
if(rc != GPG_ERR_NO_ERROR){
139
/* Set GPGME home directory for the OpenPGP engine only */
140
rc = gpgme_get_engine_info (&engine_info);
141
if (rc != GPG_ERR_NO_ERROR){
208
142
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
209
143
gpgme_strsource(rc), gpgme_strerror(rc));
210
return false;
144
return -1;
211
145
}
212
146
while(engine_info != NULL){
213
147
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
214
148
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
215
engine_info->file_name, tempdir);
149
engine_info->file_name, homedir);
216
150
break;
217
151
}
218
152
engine_info = engine_info->next;
219
153
}
220
154
if(engine_info == NULL){
221
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
222
return false;
223
}
224
225
/* Create new GPGME "context" */
226
rc = gpgme_new(&(mc->ctx));
227
if(rc != GPG_ERR_NO_ERROR){
228
fprintf(stderr, "bad gpgme_new: %s: %s\n",
229
gpgme_strsource(rc), gpgme_strerror(rc));
230
return false;
231
}
232
233
if(not import_key(pubkey) or not import_key(seckey)){
234
return false;
235
}
236
237
return true;
238
}
239
240
/*
241
* Decrypt OpenPGP data.
242
* Returns -1 on error
243
*/
244
static ssize_t pgp_packet_decrypt(const mandos_context *mc,
245
const char *cryptotext,
246
size_t crypto_size,
247
char **plaintext){
248
gpgme_data_t dh_crypto, dh_plain;
249
gpgme_error_t rc;
250
ssize_t ret;
251
size_t plaintext_capacity = 0;
252
ssize_t plaintext_length = 0;
253
254
if(debug){
255
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
155
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
156
return -1;
256
157
}
257
158
258
159
/* Create new GPGME data buffer from memory cryptotext */
259
160
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
260
161
0);
261
if(rc != GPG_ERR_NO_ERROR){
162
if (rc != GPG_ERR_NO_ERROR){
262
163
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
263
164
gpgme_strsource(rc), gpgme_strerror(rc));
264
165
return -1;
266
167
267
168
/* Create new empty GPGME data buffer for the plaintext */
268
169
rc = gpgme_data_new(&dh_plain);
269
if(rc != GPG_ERR_NO_ERROR){
170
if (rc != GPG_ERR_NO_ERROR){
270
171
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
271
172
gpgme_strsource(rc), gpgme_strerror(rc));
272
173
gpgme_data_release(dh_crypto);
273
174
return -1;
274
175
}
275
176
177
/* Create new GPGME "context" */
178
rc = gpgme_new(&ctx);
179
if (rc != GPG_ERR_NO_ERROR){
180
fprintf(stderr, "bad gpgme_new: %s: %s\n",
181
gpgme_strsource(rc), gpgme_strerror(rc));
182
plaintext_length = -1;
183
goto decrypt_end;
184
}
185
276
186
/* Decrypt data from the cryptotext data buffer to the plaintext
277
187
data buffer */
278
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
279
if(rc != GPG_ERR_NO_ERROR){
188
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
189
if (rc != GPG_ERR_NO_ERROR){
280
190
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
281
191
gpgme_strsource(rc), gpgme_strerror(rc));
282
192
plaintext_length = -1;
283
if(debug){
284
gpgme_decrypt_result_t result;
285
result = gpgme_op_decrypt_result(mc->ctx);
286
if(result == NULL){
287
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
288
} else {
289
fprintf(stderr, "Unsupported algorithm: %s\n",
290
result->unsupported_algorithm);
291
fprintf(stderr, "Wrong key usage: %u\n",
292
result->wrong_key_usage);
293
if(result->file_name != NULL){
294
fprintf(stderr, "File name: %s\n", result->file_name);
295
}
296
gpgme_recipient_t recipient;
297
recipient = result->recipients;
298
if(recipient){
299
while(recipient != NULL){
300
fprintf(stderr, "Public key algorithm: %s\n",
301
gpgme_pubkey_algo_name(recipient->pubkey_algo));
302
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
303
fprintf(stderr, "Secret key available: %s\n",
304
recipient->status == GPG_ERR_NO_SECKEY
305
? "No" : "Yes");
306
recipient = recipient->next;
307
}
308
}
309
}
310
}
311
193
goto decrypt_end;
312
194
}
313
195
315
197
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
316
198
}
317
199
200
if (debug){
201
gpgme_decrypt_result_t result;
202
result = gpgme_op_decrypt_result(ctx);
203
if (result == NULL){
204
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
205
} else {
206
fprintf(stderr, "Unsupported algorithm: %s\n",
207
result->unsupported_algorithm);
208
fprintf(stderr, "Wrong key usage: %d\n",
209
result->wrong_key_usage);
210
if(result->file_name != NULL){
211
fprintf(stderr, "File name: %s\n", result->file_name);
212
}
213
gpgme_recipient_t recipient;
214
recipient = result->recipients;
215
if(recipient){
216
while(recipient != NULL){
217
fprintf(stderr, "Public key algorithm: %s\n",
218
gpgme_pubkey_algo_name(recipient->pubkey_algo));
219
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
220
fprintf(stderr, "Secret key available: %s\n",
221
recipient->status == GPG_ERR_NO_SECKEY
222
? "No" : "Yes");
223
recipient = recipient->next;
224
}
225
}
226
}
227
}
228
318
229
/* Seek back to the beginning of the GPGME plaintext data buffer */
319
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
320
perror("gpgme_data_seek");
230
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
231
perror("pgpme_data_seek");
321
232
plaintext_length = -1;
322
233
goto decrypt_end;
323
234
}
327
238
plaintext_capacity = adjustbuffer(plaintext,
328
239
(size_t)plaintext_length,
329
240
plaintext_capacity);
330
if(plaintext_capacity == 0){
241
if (plaintext_capacity == 0){
331
242
perror("adjustbuffer");
332
243
plaintext_length = -1;
333
244
goto decrypt_end;
336
247
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
337
248
BUFFER_SIZE);
338
249
/* Print the data, if any */
339
if(ret == 0){
250
if (ret == 0){
340
251
/* EOF */
341
252
break;
342
253
}
347
258
}
348
259
plaintext_length += ret;
349
260
}
350
261
351
262
if(debug){
352
263
fprintf(stderr, "Decrypted password is: ");
353
264
for(ssize_t i = 0; i < plaintext_length; i++){
366
277
return plaintext_length;
367
278
}
368
279
369
static const char * safer_gnutls_strerror(int value) {
370
const char *ret = gnutls_strerror(value); /* Spurious warning from
371
-Wunreachable-code */
372
if(ret == NULL)
280
static const char * safer_gnutls_strerror (int value) {
281
const char *ret = gnutls_strerror (value);
282
if (ret == NULL)
373
283
ret = "(unknown)";
374
284
return ret;
375
285
}
381
291
}
382
292
383
293
static int init_gnutls_global(mandos_context *mc,
384
const char *pubkeyfilename,
385
const char *seckeyfilename){
294
const char *pubkeyfile,
295
const char *seckeyfile){
386
296
int ret;
387
297
388
298
if(debug){
389
299
fprintf(stderr, "Initializing GnuTLS\n");
390
300
}
391
392
ret = gnutls_global_init();
393
if(ret != GNUTLS_E_SUCCESS) {
394
fprintf(stderr, "GnuTLS global_init: %s\n",
395
safer_gnutls_strerror(ret));
301
302
if ((ret = gnutls_global_init ())
303
!= GNUTLS_E_SUCCESS) {
304
fprintf (stderr, "GnuTLS global_init: %s\n",
305
safer_gnutls_strerror(ret));
396
306
return -1;
397
307
}
398
308
399
if(debug){
309
if (debug){
400
310
/* "Use a log level over 10 to enable all debugging options."
401
311
* - GnuTLS manual
402
312
*/
405
315
}
406
316
407
317
/* OpenPGP credentials */
408
gnutls_certificate_allocate_credentials(&mc->cred);
409
if(ret != GNUTLS_E_SUCCESS){
410
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
411
* from
412
* -Wunreachable-code
413
*/
414
safer_gnutls_strerror(ret));
415
gnutls_global_deinit();
318
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
319
!= GNUTLS_E_SUCCESS) {
320
fprintf (stderr, "GnuTLS memory error: %s\n",
321
safer_gnutls_strerror(ret));
322
gnutls_global_deinit ();
416
323
return -1;
417
324
}
418
325
419
326
if(debug){
420
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
421
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
422
seckeyfilename);
327
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
328
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
329
seckeyfile);
423
330
}
424
331
425
332
ret = gnutls_certificate_set_openpgp_key_file
426
(mc->cred, pubkeyfilename, seckeyfilename,
427
GNUTLS_OPENPGP_FMT_BASE64);
428
if(ret != GNUTLS_E_SUCCESS) {
333
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
334
if (ret != GNUTLS_E_SUCCESS) {
429
335
fprintf(stderr,
430
336
"Error[%d] while reading the OpenPGP key pair ('%s',"
431
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
432
fprintf(stderr, "The GnuTLS error is: %s\n",
337
" '%s')\n", ret, pubkeyfile, seckeyfile);
338
fprintf(stdout, "The GnuTLS error is: %s\n",
433
339
safer_gnutls_strerror(ret));
434
340
goto globalfail;
435
341
}
436
342
437
343
/* GnuTLS server initialization */
438
344
ret = gnutls_dh_params_init(&mc->dh_params);
439
if(ret != GNUTLS_E_SUCCESS) {
440
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
441
" %s\n", safer_gnutls_strerror(ret));
345
if (ret != GNUTLS_E_SUCCESS) {
346
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
347
" %s\n", safer_gnutls_strerror(ret));
442
348
goto globalfail;
443
349
}
444
350
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
445
if(ret != GNUTLS_E_SUCCESS) {
446
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
447
safer_gnutls_strerror(ret));
351
if (ret != GNUTLS_E_SUCCESS) {
352
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
353
safer_gnutls_strerror(ret));
448
354
goto globalfail;
449
355
}
450
356
451
357
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
452
358
453
359
return 0;
454
360
455
361
globalfail:
456
457
gnutls_certificate_free_credentials(mc->cred);
458
gnutls_global_deinit();
459
gnutls_dh_params_deinit(mc->dh_params);
362
363
gnutls_certificate_free_credentials (mc->cred);
364
gnutls_global_deinit ();
460
365
return -1;
366
461
367
}
462
368
463
369
static int init_gnutls_session(mandos_context *mc,
465
371
int ret;
466
372
/* GnuTLS session creation */
467
373
ret = gnutls_init(session, GNUTLS_SERVER);
468
if(ret != GNUTLS_E_SUCCESS){
374
if (ret != GNUTLS_E_SUCCESS){
469
375
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
470
376
safer_gnutls_strerror(ret));
471
377
}
473
379
{
474
380
const char *err;
475
381
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
476
if(ret != GNUTLS_E_SUCCESS) {
382
if (ret != GNUTLS_E_SUCCESS) {
477
383
fprintf(stderr, "Syntax error at: %s\n", err);
478
384
fprintf(stderr, "GnuTLS error: %s\n",
479
385
safer_gnutls_strerror(ret));
480
gnutls_deinit(*session);
386
gnutls_deinit (*session);
481
387
return -1;
482
388
}
483
389
}
484
390
485
391
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
486
392
mc->cred);
487
if(ret != GNUTLS_E_SUCCESS) {
393
if (ret != GNUTLS_E_SUCCESS) {
488
394
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
489
395
safer_gnutls_strerror(ret));
490
gnutls_deinit(*session);
396
gnutls_deinit (*session);
491
397
return -1;
492
398
}
493
399
494
400
/* ignore client certificate if any. */
495
gnutls_certificate_server_set_request(*session,
496
GNUTLS_CERT_IGNORE);
401
gnutls_certificate_server_set_request (*session,
402
GNUTLS_CERT_IGNORE);
497
403
498
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
404
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
499
405
500
406
return 0;
501
407
}
509
415
AvahiIfIndex if_index,
510
416
mandos_context *mc){
511
417
int ret, tcp_sd;
512
ssize_t sret;
513
418
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
514
419
char *buffer = NULL;
515
420
char *decrypted_buffer;
521
426
char interface[IF_NAMESIZE];
522
427
gnutls_session_t session;
523
428
524
ret = init_gnutls_session(mc, &session);
525
if(ret != 0){
429
ret = init_gnutls_session (mc, &session);
430
if (ret != 0){
526
431
return -1;
527
432
}
528
433
529
434
if(debug){
530
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
531
"\n", ip, port);
435
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
436
ip, port);
532
437
}
533
438
534
439
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
536
441
perror("socket");
537
442
return -1;
538
443
}
539
444
540
445
if(debug){
541
446
if(if_indextoname((unsigned int)if_index, interface) == NULL){
542
447
perror("if_indextoname");
545
450
fprintf(stderr, "Binding to interface %s\n", interface);
546
451
}
547
452
548
memset(&to, 0, sizeof(to));
453
memset(&to,0,sizeof(to)); /* Spurious warning */
549
454
to.in6.sin6_family = AF_INET6;
550
455
/* It would be nice to have a way to detect if we were passed an
551
456
IPv4 address here. Now we assume an IPv6 address. */
552
457
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
553
if(ret < 0 ){
458
if (ret < 0 ){
554
459
perror("inet_pton");
555
460
return -1;
556
461
}
558
463
fprintf(stderr, "Bad address: %s\n", ip);
559
464
return -1;
560
465
}
561
to.in6.sin6_port = htons(port); /* Spurious warnings from
562
-Wconversion and
563
-Wunreachable-code */
466
to.in6.sin6_port = htons(port); /* Spurious warning */
564
467
565
468
to.in6.sin6_scope_id = (uint32_t)if_index;
566
469
567
470
if(debug){
568
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
569
port);
471
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
570
472
char addrstr[INET6_ADDRSTRLEN] = "";
571
473
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
572
474
sizeof(addrstr)) == NULL){
579
481
}
580
482
581
483
ret = connect(tcp_sd, &to.in, sizeof(to));
582
if(ret < 0){
484
if (ret < 0){
583
485
perror("connect");
584
486
return -1;
585
487
}
586
488
587
489
const char *out = mandos_protocol_version;
588
490
written = 0;
589
while(true){
491
while (true){
590
492
size_t out_size = strlen(out);
591
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
493
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
592
494
out_size - written));
593
if(ret == -1){
495
if (ret == -1){
594
496
perror("write");
595
497
retval = -1;
596
498
goto mandos_end;
599
501
if(written < out_size){
600
502
continue;
601
503
} else {
602
if(out == mandos_protocol_version){
504
if (out == mandos_protocol_version){
603
505
written = 0;
604
506
out = "\r\n";
605
507
} else {
607
509
}
608
510
}
609
511
}
610
512
611
513
if(debug){
612
514
fprintf(stderr, "Establishing TLS session with %s\n", ip);
613
515
}
614
516
615
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
616
617
do{
618
ret = gnutls_handshake(session);
619
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
620
621
if(ret != GNUTLS_E_SUCCESS){
517
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
518
519
ret = gnutls_handshake (session);
520
521
if (ret != GNUTLS_E_SUCCESS){
622
522
if(debug){
623
523
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
624
gnutls_perror(ret);
524
gnutls_perror (ret);
625
525
}
626
526
retval = -1;
627
527
goto mandos_end;
633
533
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
634
534
ip);
635
535
}
636
536
637
537
while(true){
638
538
buffer_capacity = adjustbuffer(&buffer, buffer_length,
639
539
buffer_capacity);
640
if(buffer_capacity == 0){
540
if (buffer_capacity == 0){
641
541
perror("adjustbuffer");
642
542
retval = -1;
643
543
goto mandos_end;
644
544
}
645
545
646
sret = gnutls_record_recv(session, buffer+buffer_length,
647
BUFFER_SIZE);
648
if(sret == 0){
546
ret = gnutls_record_recv(session, buffer+buffer_length,
547
BUFFER_SIZE);
548
if (ret == 0){
649
549
break;
650
550
}
651
if(sret < 0){
652
switch(sret){
551
if (ret < 0){
552
switch(ret){
653
553
case GNUTLS_E_INTERRUPTED:
654
554
case GNUTLS_E_AGAIN:
655
555
break;
656
556
case GNUTLS_E_REHANDSHAKE:
657
do{
658
ret = gnutls_handshake(session);
659
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
660
if(ret < 0){
557
ret = gnutls_handshake (session);
558
if (ret < 0){
661
559
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
662
gnutls_perror(ret);
560
gnutls_perror (ret);
663
561
retval = -1;
664
562
goto mandos_end;
665
563
}
668
566
fprintf(stderr, "Unknown error while reading data from"
669
567
" encrypted session with Mandos server\n");
670
568
retval = -1;
671
gnutls_bye(session, GNUTLS_SHUT_RDWR);
569
gnutls_bye (session, GNUTLS_SHUT_RDWR);
672
570
goto mandos_end;
673
571
}
674
572
} else {
675
buffer_length += (size_t) sret;
573
buffer_length += (size_t) ret;
676
574
}
677
575
}
678
576
680
578
fprintf(stderr, "Closing TLS session\n");
681
579
}
682
580
683
gnutls_bye(session, GNUTLS_SHUT_RDWR);
581
gnutls_bye (session, GNUTLS_SHUT_RDWR);
684
582
685
if(buffer_length > 0){
686
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
583
if (buffer_length > 0){
584
decrypted_buffer_size = pgp_packet_decrypt(buffer,
687
585
buffer_length,
688
&decrypted_buffer);
689
if(decrypted_buffer_size >= 0){
586
&decrypted_buffer,
587
keydir);
588
if (decrypted_buffer_size >= 0){
690
589
written = 0;
691
590
while(written < (size_t) decrypted_buffer_size){
692
ret = (int)fwrite(decrypted_buffer + written, 1,
693
(size_t)decrypted_buffer_size - written,
694
stdout);
591
ret = (int)fwrite (decrypted_buffer + written, 1,
592
(size_t)decrypted_buffer_size - written,
593
stdout);
695
594
if(ret == 0 and ferror(stdout)){
696
595
if(debug){
697
596
fprintf(stderr, "Error writing encrypted data: %s\n",
706
605
} else {
707
606
retval = -1;
708
607
}
709
} else {
710
retval = -1;
711
608
}
712
609
713
610
/* Shutdown procedure */
714
611
715
612
mandos_end:
716
613
free(buffer);
717
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
718
if(ret == -1){
719
perror("close");
720
}
721
gnutls_deinit(session);
614
close(tcp_sd);
615
gnutls_deinit (session);
722
616
return retval;
723
617
}
724
618
737
631
flags,
738
632
void* userdata) {
739
633
mandos_context *mc = userdata;
740
assert(r);
634
assert(r); /* Spurious warning */
741
635
742
636
/* Called whenever a service has been resolved successfully or
743
637
timed out */
744
638
745
switch(event) {
639
switch (event) {
746
640
default:
747
641
case AVAHI_RESOLVER_FAILURE:
748
642
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
755
649
char ip[AVAHI_ADDRESS_STR_MAX];
756
650
avahi_address_snprint(ip, sizeof(ip), address);
757
651
if(debug){
758
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
759
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
760
ip, (intmax_t)interface, port);
652
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
653
" port %d\n", name, host_name, ip, interface, port);
761
654
}
762
655
int ret = start_mandos_communication(ip, port, interface, mc);
763
if(ret == 0){
764
avahi_simple_poll_quit(mc->simple_poll);
656
if (ret == 0){
657
exit(EXIT_SUCCESS);
765
658
}
766
659
}
767
660
}
779
672
flags,
780
673
void* userdata) {
781
674
mandos_context *mc = userdata;
782
assert(b);
675
assert(b); /* Spurious warning */
783
676
784
677
/* Called whenever a new services becomes available on the LAN or
785
678
is removed from the LAN */
786
679
787
switch(event) {
680
switch (event) {
788
681
default:
789
682
case AVAHI_BROWSER_FAILURE:
790
683
799
692
the callback function is called the Avahi server will free the
800
693
resolver for us. */
801
694
802
if(!(avahi_s_service_resolver_new(mc->server, interface,
695
if (!(avahi_s_service_resolver_new(mc->server, interface,
803
696
protocol, name, type, domain,
804
697
AVAHI_PROTO_INET6, 0,
805
698
resolve_callback, mc)))
819
712
}
820
713
}
821
714
715
/* Combines file name and path and returns the malloced new
716
string. some sane checks could/should be added */
717
static const char *combinepath(const char *first, const char *second){
718
size_t f_len = strlen(first);
719
size_t s_len = strlen(second);
720
char *tmp = malloc(f_len + s_len + 2);
721
if (tmp == NULL){
722
return NULL;
723
}
724
if(f_len > 0){
725
memcpy(tmp, first, f_len); /* Spurious warning */
726
}
727
tmp[f_len] = '/';
728
if(s_len > 0){
729
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
730
}
731
tmp[f_len + 1 + s_len] = '\0';
732
return tmp;
733
}
734
735
822
736
int main(int argc, char *argv[]){
823
737
AvahiSServiceBrowser *sb = NULL;
824
738
int error;
825
739
int ret;
826
intmax_t tmpmax;
827
int numchars;
828
740
int exitcode = EXIT_SUCCESS;
829
741
const char *interface = "eth0";
830
742
struct ifreq network;
832
744
uid_t uid;
833
745
gid_t gid;
834
746
char *connect_to = NULL;
835
char tempdir[] = "/tmp/mandosXXXXXX";
836
bool tempdir_created = false;
837
747
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
838
const char *seckey = PATHDIR "/" SECKEY;
839
const char *pubkey = PATHDIR "/" PUBKEY;
840
748
const char *pubkeyfile = "pubkey.txt";
749
const char *seckeyfile = "seckey.txt";
841
750
mandos_context mc = { .simple_poll = NULL, .server = NULL,
842
.dh_bits = 1024, .priority = "SECURE256"
843
":!CTYPE-X.509:+CTYPE-OPENPGP" };
844
bool gnutls_initialized = false;
845
bool gpgme_initialized = false;
846
double delay = 2.5;
751
.dh_bits = 1024, .priority = "SECURE256"};
752
bool gnutls_initalized = false;
847
753
848
754
{
849
755
struct argp_option options[] = {
850
756
{ .name = "debug", .key = 128,
851
757
.doc = "Debug mode", .group = 3 },
852
758
{ .name = "connect", .key = 'c',
853
.arg = "ADDRESS:PORT",
854
.doc = "Connect directly to a specific Mandos server",
759
.arg = "IP",
760
.doc = "Connect directly to a sepcified mandos server",
855
761
.group = 1 },
856
762
{ .name = "interface", .key = 'i',
857
.arg = "NAME",
858
.doc = "Interface that will be used to search for Mandos"
859
" servers",
763
.arg = "INTERFACE",
764
.doc = "Interface that Avahi will conntect through",
765
.group = 1 },
766
{ .name = "keydir", .key = 'd',
767
.arg = "KEYDIR",
768
.doc = "Directory where the openpgp keyring is",
860
769
.group = 1 },
861
770
{ .name = "seckey", .key = 's',
862
.arg = "FILE",
863
.doc = "OpenPGP secret key file base name",
771
.arg = "SECKEY",
772
.doc = "Secret openpgp key for gnutls authentication",
864
773
.group = 1 },
865
774
{ .name = "pubkey", .key = 'p',
866
.arg = "FILE",
867
.doc = "OpenPGP public key file base name",
775
.arg = "PUBKEY",
776
.doc = "Public openpgp key for gnutls authentication",
868
777
.group = 2 },
869
778
{ .name = "dh-bits", .key = 129,
870
779
.arg = "BITS",
871
.doc = "Bit length of the prime number used in the"
872
" Diffie-Hellman key exchange",
780
.doc = "dh-bits to use in gnutls communication",
873
781
.group = 2 },
874
782
{ .name = "priority", .key = 130,
875
.arg = "STRING",
876
.doc = "GnuTLS priority string for the TLS handshake",
877
.group = 1 },
878
{ .name = "delay", .key = 131,
879
.arg = "SECONDS",
880
.doc = "Maximum delay to wait for interface startup",
881
.group = 2 },
783
.arg = "PRIORITY",
784
.doc = "GNUTLS priority", .group = 1 },
882
785
{ .name = NULL }
883
786
};
787
884
788
885
error_t parse_opt(int key, char *arg,
886
struct argp_state *state) {
887
switch(key) {
888
case 128: /* --debug */
789
error_t parse_opt (int key, char *arg,
790
struct argp_state *state) {
791
/* Get the INPUT argument from `argp_parse', which we know is
792
a pointer to our plugin list pointer. */
793
switch (key) {
794
case 128:
889
795
debug = true;
890
796
break;
891
case 'c': /* --connect */
797
case 'c':
892
798
connect_to = arg;
893
799
break;
894
case 'i': /* --interface */
800
case 'i':
895
801
interface = arg;
896
802
break;
897
case 's': /* --seckey */
898
seckey = arg;
899
break;
900
case 'p': /* --pubkey */
901
pubkey = arg;
902
break;
903
case 129: /* --dh-bits */
904
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
905
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
906
or arg[numchars] != '\0'){
907
fprintf(stderr, "Bad number of DH bits\n");
803
case 'd':
804
keydir = arg;
805
break;
806
case 's':
807
seckeyfile = arg;
808
break;
809
case 'p':
810
pubkeyfile = arg;
811
break;
812
case 129:
813
errno = 0;
814
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
815
if (errno){
816
perror("strtol");
908
817
exit(EXIT_FAILURE);
909
818
}
910
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
911
819
break;
912
case 130: /* --priority */
820
case 130:
913
821
mc.priority = arg;
914
822
break;
915
case 131: /* --delay */
916
ret = sscanf(arg, "%lf%n", &delay, &numchars);
917
if(ret < 1 or arg[numchars] != '\0'){
918
fprintf(stderr, "Bad delay\n");
919
exit(EXIT_FAILURE);
920
}
921
break;
922
823
case ARGP_KEY_ARG:
923
argp_usage(state);
924
case ARGP_KEY_END:
824
argp_usage (state);
925
825
break;
826
case ARGP_KEY_END:
827
break;
926
828
default:
927
829
return ARGP_ERR_UNKNOWN;
928
830
}
929
831
return 0;
930
832
}
931
833
932
834
struct argp argp = { .options = options, .parser = parse_opt,
933
835
.args_doc = "",
934
836
.doc = "Mandos client -- Get and decrypt"
935
" passwords from a Mandos server" };
936
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
937
if(ret == ARGP_ERR_UNKNOWN){
938
fprintf(stderr, "Unknown error while parsing arguments\n");
939
exitcode = EXIT_FAILURE;
940
goto end;
941
}
837
" passwords from mandos server" };
838
argp_parse (&argp, argc, argv, 0, 0, NULL);
942
839
}
943
944
/* If the interface is down, bring it up */
945
{
946
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
947
messages to mess up the prompt */
948
ret = klogctl(8, NULL, 5);
949
if(ret == -1){
950
perror("klogctl");
951
}
952
840
953
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
954
if(sd < 0) {
955
perror("socket");
956
exitcode = EXIT_FAILURE;
957
ret = klogctl(7, NULL, 0);
958
if(ret == -1){
959
perror("klogctl");
960
}
961
goto end;
962
}
963
strcpy(network.ifr_name, interface);
964
ret = ioctl(sd, SIOCGIFFLAGS, &network);
965
if(ret == -1){
966
perror("ioctl SIOCGIFFLAGS");
967
ret = klogctl(7, NULL, 0);
968
if(ret == -1){
969
perror("klogctl");
970
}
971
exitcode = EXIT_FAILURE;
972
goto end;
973
}
974
if((network.ifr_flags & IFF_UP) == 0){
975
network.ifr_flags |= IFF_UP;
976
ret = ioctl(sd, SIOCSIFFLAGS, &network);
977
if(ret == -1){
978
perror("ioctl SIOCSIFFLAGS");
979
exitcode = EXIT_FAILURE;
980
ret = klogctl(7, NULL, 0);
981
if(ret == -1){
982
perror("klogctl");
983
}
984
goto end;
985
}
986
}
987
/* sleep checking until interface is running */
988
for(int i=0; i < delay * 4; i++){
989
ret = ioctl(sd, SIOCGIFFLAGS, &network);
990
if(ret == -1){
991
perror("ioctl SIOCGIFFLAGS");
992
} else if(network.ifr_flags & IFF_RUNNING){
993
break;
994
}
995
struct timespec sleeptime = { .tv_nsec = 250000000 };
996
nanosleep(&sleeptime, NULL);
997
}
998
ret = (int)TEMP_FAILURE_RETRY(close(sd));
999
if(ret == -1){
1000
perror("close");
1001
}
1002
/* Restores kernel loglevel to default */
1003
ret = klogctl(7, NULL, 0);
1004
if(ret == -1){
1005
perror("klogctl");
1006
}
841
pubkeyfile = combinepath(keydir, pubkeyfile);
842
if (pubkeyfile == NULL){
843
perror("combinepath");
844
exitcode = EXIT_FAILURE;
845
goto end;
1007
846
}
1008
847
848
seckeyfile = combinepath(keydir, seckeyfile);
849
if (seckeyfile == NULL){
850
perror("combinepath");
851
goto end;
852
}
853
854
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
855
if (ret == -1){
856
fprintf(stderr, "init_gnutls_global\n");
857
goto end;
858
} else {
859
gnutls_initalized = true;
860
}
861
1009
862
uid = getuid();
1010
863
gid = getgid();
864
865
ret = setuid(uid);
866
if (ret == -1){
867
perror("setuid");
868
}
1011
869
1012
870
setgid(gid);
1013
if(ret == -1){
871
if (ret == -1){
1014
872
perror("setgid");
1015
873
}
1016
874
1017
ret = setuid(uid);
1018
if(ret == -1){
1019
perror("setuid");
1020
}
1021
1022
ret = init_gnutls_global(&mc, pubkey, seckey);
1023
if(ret == -1){
1024
fprintf(stderr, "init_gnutls_global failed\n");
1025
exitcode = EXIT_FAILURE;
1026
goto end;
1027
} else {
1028
gnutls_initialized = true;
1029
}
1030
1031
if(mkdtemp(tempdir) == NULL){
1032
perror("mkdtemp");
1033
goto end;
1034
}
1035
tempdir_created = true;
1036
1037
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
1038
fprintf(stderr, "init_gpgme failed\n");
1039
exitcode = EXIT_FAILURE;
1040
goto end;
1041
} else {
1042
gpgme_initialized = true;
1043
}
1044
1045
875
if_index = (AvahiIfIndex) if_nametoindex(interface);
1046
876
if(if_index == 0){
1047
877
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1048
exitcode = EXIT_FAILURE;
1049
goto end;
878
exit(EXIT_FAILURE);
1050
879
}
1051
880
1052
881
if(connect_to != NULL){
1058
887
exitcode = EXIT_FAILURE;
1059
888
goto end;
1060
889
}
1061
uint16_t port;
1062
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1063
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1064
or address[numchars+1] != '\0'){
1065
fprintf(stderr, "Bad port number\n");
890
errno = 0;
891
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
892
if(errno){
893
perror("Bad port number");
1066
894
exitcode = EXIT_FAILURE;
1067
895
goto end;
1068
896
}
1069
port = (uint16_t)tmpmax;
1070
897
*address = '\0';
1071
898
address = connect_to;
1072
899
ret = start_mandos_communication(address, port, if_index, &mc);
1078
905
goto end;
1079
906
}
1080
907
1081
if(not debug){
908
/* If the interface is down, bring it up */
909
{
910
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
911
if(sd < 0) {
912
perror("socket");
913
exitcode = EXIT_FAILURE;
914
goto end;
915
}
916
strcpy(network.ifr_name, interface); /* Spurious warning */
917
ret = ioctl(sd, SIOCGIFFLAGS, &network);
918
if(ret == -1){
919
perror("ioctl SIOCGIFFLAGS");
920
exitcode = EXIT_FAILURE;
921
goto end;
922
}
923
if((network.ifr_flags & IFF_UP) == 0){
924
network.ifr_flags |= IFF_UP;
925
ret = ioctl(sd, SIOCSIFFLAGS, &network);
926
if(ret == -1){
927
perror("ioctl SIOCSIFFLAGS");
928
exitcode = EXIT_FAILURE;
929
goto end;
930
}
931
}
932
close(sd);
933
}
934
935
if (not debug){
1082
936
avahi_set_log_function(empty_log);
1083
937
}
1084
938
1087
941
1088
942
/* Allocate main Avahi loop object */
1089
943
mc.simple_poll = avahi_simple_poll_new();
1090
if(mc.simple_poll == NULL) {
944
if (mc.simple_poll == NULL) {
1091
945
fprintf(stderr, "Avahi: Failed to create simple poll"
1092
946
" object.\n");
1093
947
exitcode = EXIT_FAILURE;
1094
948
goto end;
1095
949
}
1096
950
1097
951
{
1098
952
AvahiServerConfig config;
1099
953
/* Do not publish any local Zeroconf records */
1102
956
config.publish_addresses = 0;
1103
957
config.publish_workstation = 0;
1104
958
config.publish_domain = 0;
1105
959
1106
960
/* Allocate a new server */
1107
961
mc.server = avahi_server_new(avahi_simple_poll_get
1108
962
(mc.simple_poll), &config, NULL,
1109
963
NULL, &error);
1110
964
1111
965
/* Free the Avahi configuration data */
1112
966
avahi_server_config_free(&config);
1113
967
}
1114
968
1115
969
/* Check if creating the Avahi server object succeeded */
1116
if(mc.server == NULL) {
970
if (mc.server == NULL) {
1117
971
fprintf(stderr, "Failed to create Avahi server: %s\n",
1118
972
avahi_strerror(error));
1119
973
exitcode = EXIT_FAILURE;
1125
979
AVAHI_PROTO_INET6,
1126
980
"_mandos._tcp", NULL, 0,
1127
981
browse_callback, &mc);
1128
if(sb == NULL) {
982
if (sb == NULL) {
1129
983
fprintf(stderr, "Failed to create service browser: %s\n",
1130
984
avahi_strerror(avahi_server_errno(mc.server)));
1131
985
exitcode = EXIT_FAILURE;
1133
987
}
1134
988
1135
989
/* Run the main loop */
1136
1137
if(debug){
990
991
if (debug){
1138
992
fprintf(stderr, "Starting Avahi loop search\n");
1139
993
}
1140
994
1141
995
avahi_simple_poll_loop(mc.simple_poll);
1142
996
1143
997
end:
1144
1145
if(debug){
998
999
if (debug){
1146
1000
fprintf(stderr, "%s exiting\n", argv[0]);
1147
1001
}
1148
1002
1149
1003
/* Cleanup things */
1150
if(sb != NULL)
1004
if (sb != NULL)
1151
1005
avahi_s_service_browser_free(sb);
1152
1006
1153
if(mc.server != NULL)
1007
if (mc.server != NULL)
1154
1008
avahi_server_free(mc.server);
1155
1156
if(mc.simple_poll != NULL)
1009
1010
if (mc.simple_poll != NULL)
1157
1011
avahi_simple_poll_free(mc.simple_poll);
1158
1159
if(gnutls_initialized){
1160
gnutls_certificate_free_credentials(mc.cred);
1161
gnutls_global_deinit();
1162
gnutls_dh_params_deinit(mc.dh_params);
1163
}
1164
1165
if(gpgme_initialized){
1166
gpgme_release(mc.ctx);
1167
}
1168
1169
/* Removes the temp directory used by GPGME */
1170
if(tempdir_created){
1171
DIR *d;
1172
struct dirent *direntry;
1173
d = opendir(tempdir);
1174
if(d == NULL){
1175
if(errno != ENOENT){
1176
perror("opendir");
1177
}
1178
} else {
1179
while(true){
1180
direntry = readdir(d);
1181
if(direntry == NULL){
1182
break;
1183
}
1184
/* Skip "." and ".." */
1185
if(direntry->d_name[0] == '.'
1186
and (direntry->d_name[1] == '\0'
1187
or (direntry->d_name[1] == '.'
1188
and direntry->d_name[2] == '\0'))){
1189
continue;
1190
}
1191
char *fullname = NULL;
1192
ret = asprintf(&fullname, "%s/%s", tempdir,
1193
direntry->d_name);
1194
if(ret < 0){
1195
perror("asprintf");
1196
continue;
1197
}
1198
ret = remove(fullname);
1199
if(ret == -1){
1200
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1201
strerror(errno));
1202
}
1203
free(fullname);
1204
}
1205
closedir(d);
1206
}
1207
ret = rmdir(tempdir);
1208
if(ret == -1 and errno != ENOENT){
1209
perror("rmdir");
1210
}
1012
free(pubkeyfile);
1013
free(seckeyfile);
1014
1015
if (gnutls_initalized){
1016
gnutls_certificate_free_credentials (mc.cred);
1017
gnutls_global_deinit ();
1211
1018
}
1212
1019
1213
1020
return exitcode;
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0