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/mandosclient.c
- browse files at revision 41
- compare with another revision
- download diff
- download tarball
- view history from revision 41
- Committer: Teddy Hogeborn
- Date: 2008-08-03 21:45:14 UTC
- mfrom: (24.1.13 mandos)
- Revision ID: teddy@fukt.bsnet.se-20080803214514-plvvkrpoitwsrxeg
Merge.
- files added:
- ca.pem
- files removed:
- .bzr-builddeb
- debian
- debian/po
- files renamed:
- plugin-runner.c => plugbasedclient.c
- plugins.d/mandos-client.c => plugins.d/mandosclient.c
- plugins.d/password-prompt.c => plugins.d/passprompt.c
- mandos.conf => server.conf
- mandos => server.py
- files modified:
- Makefile
added
removed
plugins.d/mandosclient.c
1
1
/* -*- coding: utf-8 -*- */
2
2
/*
3
* Mandos-client - get and decrypt data from a Mandos server
3
* Mandos client - get and decrypt data from a Mandos server
4
4
*
5
5
* This program is partly derived from an example program for an Avahi
6
6
* service browser, downloaded from
9
9
* "browse_callback", and parts of "main".
10
10
*
11
11
* Everything else is
12
* Copyright © 2008,2009 Teddy Hogeborn
13
* Copyright © 2008,2009 Björn Påhlsson
12
* Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
14
13
*
15
14
* This program is free software: you can redistribute it and/or
16
15
* modify it under the terms of the GNU General Public License as
33
32
#define _LARGEFILE_SOURCE
34
33
#define _FILE_OFFSET_BITS 64
35
34
36
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
37
36
38
#include <stdio.h> /* fprintf(), stderr, fwrite(),
39
stdout, ferror(), sscanf(),
40
remove() */
41
#include <stdint.h> /* uint16_t, uint32_t */
42
#include <stddef.h> /* NULL, size_t, ssize_t */
43
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
44
srand() */
45
#include <stdbool.h> /* bool, true */
46
#include <string.h> /* memset(), strcmp(), strlen(),
47
strerror(), asprintf(), strcpy() */
48
#include <sys/ioctl.h> /* ioctl */
49
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
50
sockaddr_in6, PF_INET6,
51
SOCK_STREAM, INET6_ADDRSTRLEN,
52
uid_t, gid_t, open(), opendir(),
53
DIR */
54
#include <sys/stat.h> /* open() */
55
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
56
struct in6_addr, inet_pton(),
57
connect() */
58
#include <fcntl.h> /* open() */
59
#include <dirent.h> /* opendir(), struct dirent, readdir()
60
*/
61
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
62
#include <assert.h> /* assert() */
63
#include <errno.h> /* perror(), errno */
64
#include <time.h> /* 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 */
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 */
100
68
101
69
/* GPGME */
102
#include <gpgme.h> /* All GPGME types, constants and
103
functions:
104
gpgme_*
105
GPGME_PROTOCOL_OpenPGP,
106
GPG_ERR_NO_* */
70
#include <errno.h> /* perror() */
71
#include <gpgme.h>
72
73
/* getopt_long */
74
#include <getopt.h>
107
75
108
76
#define BUFFER_SIZE 256
109
77
110
#define PATHDIR "/conf/conf.d/mandos"
111
#define SECKEY "seckey.txt"
112
#define PUBKEY "pubkey.txt"
78
static const char *keydir = "/conf/conf.d/mandos";
79
static const char *pubkeyfile = "pubkey.txt";
80
static const char *seckeyfile = "seckey.txt";
113
81
114
82
bool debug = false;
115
static const char mandos_protocol_version[] = "1";
116
const char *argp_program_version = "mandos-client " VERSION;
117
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
118
119
/* Used for passing in values through the Avahi callback functions */
83
84
const char mandos_protocol_version[] = "1";
85
86
/* Used for passing in values through all the callback functions */
120
87
typedef struct {
121
88
AvahiSimplePoll *simple_poll;
122
89
AvahiServer *server;
124
91
unsigned int dh_bits;
125
92
gnutls_dh_params_t dh_params;
126
93
const char *priority;
127
gpgme_ctx_t ctx;
128
94
} mandos_context;
129
95
130
/*
131
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
132
* "buffer_capacity" is how much is currently allocated,
133
* "buffer_length" is how much is already used.
134
*/
135
96
size_t adjustbuffer(char **buffer, size_t buffer_length,
136
97
size_t buffer_capacity){
137
if(buffer_length + BUFFER_SIZE > buffer_capacity){
98
if (buffer_length + BUFFER_SIZE > buffer_capacity){
138
99
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
139
if(buffer == NULL){
100
if (buffer == NULL){
140
101
return 0;
141
102
}
142
103
buffer_capacity += BUFFER_SIZE;
145
106
}
146
107
147
108
/*
148
* Initialize GPGME.
109
* Decrypt OpenPGP data using keyrings in HOMEDIR.
110
* Returns -1 on error
149
111
*/
150
static bool init_gpgme(mandos_context *mc, const char *seckey,
151
const char *pubkey, const char *tempdir){
152
int ret;
112
static ssize_t pgp_packet_decrypt (const char *cryptotext,
113
size_t crypto_size,
114
char **plaintext,
115
const char *homedir){
116
gpgme_data_t dh_crypto, dh_plain;
117
gpgme_ctx_t ctx;
153
118
gpgme_error_t rc;
119
ssize_t ret;
120
size_t plaintext_capacity = 0;
121
ssize_t plaintext_length = 0;
154
122
gpgme_engine_info_t engine_info;
155
123
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");
124
if (debug){
125
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
194
126
}
195
127
196
128
/* Init GPGME */
197
129
gpgme_check_version(NULL);
198
130
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
199
if(rc != GPG_ERR_NO_ERROR){
131
if (rc != GPG_ERR_NO_ERROR){
200
132
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
201
133
gpgme_strsource(rc), gpgme_strerror(rc));
202
return false;
134
return -1;
203
135
}
204
136
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){
137
/* Set GPGME home directory for the OpenPGP engine only */
138
rc = gpgme_get_engine_info (&engine_info);
139
if (rc != GPG_ERR_NO_ERROR){
208
140
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
209
141
gpgme_strsource(rc), gpgme_strerror(rc));
210
return false;
142
return -1;
211
143
}
212
144
while(engine_info != NULL){
213
145
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
214
146
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
215
engine_info->file_name, tempdir);
147
engine_info->file_name, homedir);
216
148
break;
217
149
}
218
150
engine_info = engine_info->next;
219
151
}
220
152
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");
153
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
154
return -1;
256
155
}
257
156
258
157
/* Create new GPGME data buffer from memory cryptotext */
259
158
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
260
159
0);
261
if(rc != GPG_ERR_NO_ERROR){
160
if (rc != GPG_ERR_NO_ERROR){
262
161
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
263
162
gpgme_strsource(rc), gpgme_strerror(rc));
264
163
return -1;
266
165
267
166
/* Create new empty GPGME data buffer for the plaintext */
268
167
rc = gpgme_data_new(&dh_plain);
269
if(rc != GPG_ERR_NO_ERROR){
168
if (rc != GPG_ERR_NO_ERROR){
270
169
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
271
170
gpgme_strsource(rc), gpgme_strerror(rc));
272
171
gpgme_data_release(dh_crypto);
273
172
return -1;
274
173
}
275
174
175
/* Create new GPGME "context" */
176
rc = gpgme_new(&ctx);
177
if (rc != GPG_ERR_NO_ERROR){
178
fprintf(stderr, "bad gpgme_new: %s: %s\n",
179
gpgme_strsource(rc), gpgme_strerror(rc));
180
plaintext_length = -1;
181
goto decrypt_end;
182
}
183
276
184
/* Decrypt data from the cryptotext data buffer to the plaintext
277
185
data buffer */
278
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
279
if(rc != GPG_ERR_NO_ERROR){
186
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
187
if (rc != GPG_ERR_NO_ERROR){
280
188
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
281
189
gpgme_strsource(rc), gpgme_strerror(rc));
282
190
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
191
goto decrypt_end;
312
192
}
313
193
315
195
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
316
196
}
317
197
198
if (debug){
199
gpgme_decrypt_result_t result;
200
result = gpgme_op_decrypt_result(ctx);
201
if (result == NULL){
202
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
203
} else {
204
fprintf(stderr, "Unsupported algorithm: %s\n",
205
result->unsupported_algorithm);
206
fprintf(stderr, "Wrong key usage: %d\n",
207
result->wrong_key_usage);
208
if(result->file_name != NULL){
209
fprintf(stderr, "File name: %s\n", result->file_name);
210
}
211
gpgme_recipient_t recipient;
212
recipient = result->recipients;
213
if(recipient){
214
while(recipient != NULL){
215
fprintf(stderr, "Public key algorithm: %s\n",
216
gpgme_pubkey_algo_name(recipient->pubkey_algo));
217
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
218
fprintf(stderr, "Secret key available: %s\n",
219
recipient->status == GPG_ERR_NO_SECKEY
220
? "No" : "Yes");
221
recipient = recipient->next;
222
}
223
}
224
}
225
}
226
318
227
/* 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");
228
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
229
perror("pgpme_data_seek");
321
230
plaintext_length = -1;
322
231
goto decrypt_end;
323
232
}
324
233
325
234
*plaintext = NULL;
326
235
while(true){
327
plaintext_capacity = adjustbuffer(plaintext,
328
(size_t)plaintext_length,
236
plaintext_capacity = adjustbuffer(plaintext, (size_t)plaintext_length,
329
237
plaintext_capacity);
330
if(plaintext_capacity == 0){
238
if (plaintext_capacity == 0){
331
239
perror("adjustbuffer");
332
240
plaintext_length = -1;
333
241
goto decrypt_end;
336
244
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
337
245
BUFFER_SIZE);
338
246
/* Print the data, if any */
339
if(ret == 0){
247
if (ret == 0){
340
248
/* EOF */
341
249
break;
342
250
}
347
255
}
348
256
plaintext_length += ret;
349
257
}
350
258
351
259
if(debug){
352
260
fprintf(stderr, "Decrypted password is: ");
353
261
for(ssize_t i = 0; i < plaintext_length; i++){
366
274
return plaintext_length;
367
275
}
368
276
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)
277
static const char * safer_gnutls_strerror (int value) {
278
const char *ret = gnutls_strerror (value);
279
if (ret == NULL)
373
280
ret = "(unknown)";
374
281
return ret;
375
282
}
380
287
fprintf(stderr, "GnuTLS: %s", string);
381
288
}
382
289
383
static int init_gnutls_global(mandos_context *mc,
384
const char *pubkeyfilename,
385
const char *seckeyfilename){
290
static int init_gnutls_global(mandos_context *mc){
386
291
int ret;
387
292
388
293
if(debug){
389
294
fprintf(stderr, "Initializing GnuTLS\n");
390
295
}
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));
296
297
if ((ret = gnutls_global_init ())
298
!= GNUTLS_E_SUCCESS) {
299
fprintf (stderr, "GnuTLS global_init: %s\n",
300
safer_gnutls_strerror(ret));
396
301
return -1;
397
302
}
398
303
399
if(debug){
304
if (debug){
400
305
/* "Use a log level over 10 to enable all debugging options."
401
306
* - GnuTLS manual
402
307
*/
405
310
}
406
311
407
312
/* 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();
313
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
314
!= GNUTLS_E_SUCCESS) {
315
fprintf (stderr, "GnuTLS memory error: %s\n",
316
safer_gnutls_strerror(ret));
416
317
return -1;
417
318
}
418
319
419
320
if(debug){
420
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
421
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
422
seckeyfilename);
321
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
322
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
323
seckeyfile);
423
324
}
424
325
425
326
ret = gnutls_certificate_set_openpgp_key_file
426
(mc->cred, pubkeyfilename, seckeyfilename,
427
GNUTLS_OPENPGP_FMT_BASE64);
428
if(ret != GNUTLS_E_SUCCESS) {
327
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
328
if (ret != GNUTLS_E_SUCCESS) {
429
329
fprintf(stderr,
430
330
"Error[%d] while reading the OpenPGP key pair ('%s',"
431
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
432
fprintf(stderr, "The GnuTLS error is: %s\n",
331
" '%s')\n", ret, pubkeyfile, seckeyfile);
332
fprintf(stdout, "The GnuTLS error is: %s\n",
433
333
safer_gnutls_strerror(ret));
434
goto globalfail;
334
return -1;
435
335
}
436
336
437
337
/* GnuTLS server initialization */
438
338
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));
442
goto globalfail;
339
if (ret != GNUTLS_E_SUCCESS) {
340
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
341
" %s\n", safer_gnutls_strerror(ret));
342
return -1;
443
343
}
444
344
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));
448
goto globalfail;
345
if (ret != GNUTLS_E_SUCCESS) {
346
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
347
safer_gnutls_strerror(ret));
348
return -1;
449
349
}
450
350
451
351
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
452
352
453
353
return 0;
454
455
globalfail:
456
457
gnutls_certificate_free_credentials(mc->cred);
458
gnutls_global_deinit();
459
gnutls_dh_params_deinit(mc->dh_params);
460
return -1;
461
354
}
462
355
463
static int init_gnutls_session(mandos_context *mc,
464
gnutls_session_t *session){
356
static int init_gnutls_session(mandos_context *mc, gnutls_session_t *session){
465
357
int ret;
466
358
/* GnuTLS session creation */
467
359
ret = gnutls_init(session, GNUTLS_SERVER);
468
if(ret != GNUTLS_E_SUCCESS){
360
if (ret != GNUTLS_E_SUCCESS){
469
361
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
470
362
safer_gnutls_strerror(ret));
471
363
}
473
365
{
474
366
const char *err;
475
367
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
476
if(ret != GNUTLS_E_SUCCESS) {
368
if (ret != GNUTLS_E_SUCCESS) {
477
369
fprintf(stderr, "Syntax error at: %s\n", err);
478
370
fprintf(stderr, "GnuTLS error: %s\n",
479
371
safer_gnutls_strerror(ret));
480
gnutls_deinit(*session);
481
372
return -1;
482
373
}
483
374
}
484
375
485
376
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
486
377
mc->cred);
487
if(ret != GNUTLS_E_SUCCESS) {
378
if (ret != GNUTLS_E_SUCCESS) {
488
379
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
489
380
safer_gnutls_strerror(ret));
490
gnutls_deinit(*session);
491
381
return -1;
492
382
}
493
383
494
384
/* ignore client certificate if any. */
495
gnutls_certificate_server_set_request(*session,
496
GNUTLS_CERT_IGNORE);
385
gnutls_certificate_server_set_request (*session,
386
GNUTLS_CERT_IGNORE);
497
387
498
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
388
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
499
389
500
390
return 0;
501
391
}
509
399
AvahiIfIndex if_index,
510
400
mandos_context *mc){
511
401
int ret, tcp_sd;
512
ssize_t sret;
513
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
402
struct sockaddr_in6 to;
514
403
char *buffer = NULL;
515
404
char *decrypted_buffer;
516
405
size_t buffer_length = 0;
520
409
int retval = 0;
521
410
char interface[IF_NAMESIZE];
522
411
gnutls_session_t session;
412
gnutls_dh_params_t dh_params;
523
413
524
ret = init_gnutls_session(mc, &session);
525
if(ret != 0){
414
ret = init_gnutls_session (mc, &session);
415
if (ret != 0){
526
416
return -1;
527
417
}
528
418
529
419
if(debug){
530
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
531
"\n", ip, port);
420
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
421
ip, port);
532
422
}
533
423
534
424
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
536
426
perror("socket");
537
427
return -1;
538
428
}
539
429
540
430
if(debug){
541
431
if(if_indextoname((unsigned int)if_index, interface) == NULL){
542
432
perror("if_indextoname");
545
435
fprintf(stderr, "Binding to interface %s\n", interface);
546
436
}
547
437
548
memset(&to, 0, sizeof(to));
549
to.in6.sin6_family = AF_INET6;
438
memset(&to,0,sizeof(to)); /* Spurious warning */
439
to.sin6_family = AF_INET6;
550
440
/* It would be nice to have a way to detect if we were passed an
551
441
IPv4 address here. Now we assume an IPv6 address. */
552
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
553
if(ret < 0 ){
442
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
443
if (ret < 0 ){
554
444
perror("inet_pton");
555
445
return -1;
556
446
}
558
448
fprintf(stderr, "Bad address: %s\n", ip);
559
449
return -1;
560
450
}
561
to.in6.sin6_port = htons(port); /* Spurious warnings from
562
-Wconversion and
563
-Wunreachable-code */
451
to.sin6_port = htons(port); /* Spurious warning */
564
452
565
to.in6.sin6_scope_id = (uint32_t)if_index;
453
to.sin6_scope_id = (uint32_t)if_index;
566
454
567
455
if(debug){
568
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
569
port);
456
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
570
457
char addrstr[INET6_ADDRSTRLEN] = "";
571
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
458
if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr,
572
459
sizeof(addrstr)) == NULL){
573
460
perror("inet_ntop");
574
461
} else {
578
465
}
579
466
}
580
467
581
ret = connect(tcp_sd, &to.in, sizeof(to));
582
if(ret < 0){
468
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
469
if (ret < 0){
583
470
perror("connect");
584
471
return -1;
585
472
}
586
473
587
474
const char *out = mandos_protocol_version;
588
475
written = 0;
589
while(true){
476
while (true){
590
477
size_t out_size = strlen(out);
591
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
478
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
592
479
out_size - written));
593
if(ret == -1){
480
if (ret == -1){
594
481
perror("write");
595
482
retval = -1;
596
483
goto mandos_end;
599
486
if(written < out_size){
600
487
continue;
601
488
} else {
602
if(out == mandos_protocol_version){
489
if (out == mandos_protocol_version){
603
490
written = 0;
604
491
out = "\r\n";
605
492
} else {
607
494
}
608
495
}
609
496
}
610
497
611
498
if(debug){
612
499
fprintf(stderr, "Establishing TLS session with %s\n", ip);
613
500
}
614
501
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){
502
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
503
504
ret = gnutls_handshake (session);
505
506
if (ret != GNUTLS_E_SUCCESS){
622
507
if(debug){
623
508
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
624
gnutls_perror(ret);
509
gnutls_perror (ret);
625
510
}
626
511
retval = -1;
627
512
goto mandos_end;
633
518
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
634
519
ip);
635
520
}
636
521
637
522
while(true){
638
buffer_capacity = adjustbuffer(&buffer, buffer_length,
639
buffer_capacity);
640
if(buffer_capacity == 0){
523
buffer_capacity = adjustbuffer(&buffer, buffer_length, buffer_capacity);
524
if (buffer_capacity == 0){
641
525
perror("adjustbuffer");
642
526
retval = -1;
643
527
goto mandos_end;
644
528
}
645
529
646
sret = gnutls_record_recv(session, buffer+buffer_length,
647
BUFFER_SIZE);
648
if(sret == 0){
530
ret = gnutls_record_recv(session, buffer+buffer_length,
531
BUFFER_SIZE);
532
if (ret == 0){
649
533
break;
650
534
}
651
if(sret < 0){
652
switch(sret){
535
if (ret < 0){
536
switch(ret){
653
537
case GNUTLS_E_INTERRUPTED:
654
538
case GNUTLS_E_AGAIN:
655
539
break;
656
540
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){
541
ret = gnutls_handshake (session);
542
if (ret < 0){
661
543
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
662
gnutls_perror(ret);
544
gnutls_perror (ret);
663
545
retval = -1;
664
546
goto mandos_end;
665
547
}
668
550
fprintf(stderr, "Unknown error while reading data from"
669
551
" encrypted session with Mandos server\n");
670
552
retval = -1;
671
gnutls_bye(session, GNUTLS_SHUT_RDWR);
553
gnutls_bye (session, GNUTLS_SHUT_RDWR);
672
554
goto mandos_end;
673
555
}
674
556
} else {
675
buffer_length += (size_t) sret;
557
buffer_length += (size_t) ret;
676
558
}
677
559
}
678
560
680
562
fprintf(stderr, "Closing TLS session\n");
681
563
}
682
564
683
gnutls_bye(session, GNUTLS_SHUT_RDWR);
565
gnutls_bye (session, GNUTLS_SHUT_RDWR);
684
566
685
if(buffer_length > 0){
686
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
567
if (buffer_length > 0){
568
decrypted_buffer_size = pgp_packet_decrypt(buffer,
687
569
buffer_length,
688
&decrypted_buffer);
689
if(decrypted_buffer_size >= 0){
570
&decrypted_buffer,
571
keydir);
572
if (decrypted_buffer_size >= 0){
690
573
written = 0;
691
574
while(written < (size_t) decrypted_buffer_size){
692
ret = (int)fwrite(decrypted_buffer + written, 1,
693
(size_t)decrypted_buffer_size - written,
694
stdout);
575
ret = (int)fwrite (decrypted_buffer + written, 1,
576
(size_t)decrypted_buffer_size - written,
577
stdout);
695
578
if(ret == 0 and ferror(stdout)){
696
579
if(debug){
697
580
fprintf(stderr, "Error writing encrypted data: %s\n",
706
589
} else {
707
590
retval = -1;
708
591
}
709
} else {
710
retval = -1;
711
592
}
712
593
713
594
/* Shutdown procedure */
714
595
715
596
mandos_end:
716
597
free(buffer);
717
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
718
if(ret == -1){
719
perror("close");
720
}
721
gnutls_deinit(session);
598
close(tcp_sd);
599
gnutls_deinit (session);
600
gnutls_certificate_free_credentials (mc->cred);
601
gnutls_global_deinit ();
722
602
return retval;
723
603
}
724
604
737
617
flags,
738
618
void* userdata) {
739
619
mandos_context *mc = userdata;
740
assert(r);
620
assert(r); /* Spurious warning */
741
621
742
622
/* Called whenever a service has been resolved successfully or
743
623
timed out */
744
624
745
switch(event) {
625
switch (event) {
746
626
default:
747
627
case AVAHI_RESOLVER_FAILURE:
748
628
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
755
635
char ip[AVAHI_ADDRESS_STR_MAX];
756
636
avahi_address_snprint(ip, sizeof(ip), address);
757
637
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);
638
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
639
" port %d\n", name, host_name, ip, interface, port);
761
640
}
762
641
int ret = start_mandos_communication(ip, port, interface, mc);
763
if(ret == 0){
764
avahi_simple_poll_quit(mc->simple_poll);
642
if (ret == 0){
643
exit(EXIT_SUCCESS);
765
644
}
766
645
}
767
646
}
779
658
flags,
780
659
void* userdata) {
781
660
mandos_context *mc = userdata;
782
assert(b);
661
assert(b); /* Spurious warning */
783
662
784
663
/* Called whenever a new services becomes available on the LAN or
785
664
is removed from the LAN */
786
665
787
switch(event) {
666
switch (event) {
788
667
default:
789
668
case AVAHI_BROWSER_FAILURE:
790
669
799
678
the callback function is called the Avahi server will free the
800
679
resolver for us. */
801
680
802
if(!(avahi_s_service_resolver_new(mc->server, interface,
681
if (!(avahi_s_service_resolver_new(mc->server, interface,
803
682
protocol, name, type, domain,
804
683
AVAHI_PROTO_INET6, 0,
805
684
resolve_callback, mc)))
819
698
}
820
699
}
821
700
701
/* Combines file name and path and returns the malloced new
702
string. some sane checks could/should be added */
703
static const char *combinepath(const char *first, const char *second){
704
size_t f_len = strlen(first);
705
size_t s_len = strlen(second);
706
char *tmp = malloc(f_len + s_len + 2);
707
if (tmp == NULL){
708
return NULL;
709
}
710
if(f_len > 0){
711
memcpy(tmp, first, f_len); /* Spurious warning */
712
}
713
tmp[f_len] = '/';
714
if(s_len > 0){
715
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
716
}
717
tmp[f_len + 1 + s_len] = '\0';
718
return tmp;
719
}
720
721
822
722
int main(int argc, char *argv[]){
823
723
AvahiSServiceBrowser *sb = NULL;
824
724
int error;
825
725
int ret;
826
intmax_t tmpmax;
827
int numchars;
828
726
int exitcode = EXIT_SUCCESS;
829
727
const char *interface = "eth0";
830
728
struct ifreq network;
832
730
uid_t uid;
833
731
gid_t gid;
834
732
char *connect_to = NULL;
835
char tempdir[] = "/tmp/mandosXXXXXX";
836
bool tempdir_created = false;
837
733
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
838
const char *seckey = PATHDIR "/" SECKEY;
839
const char *pubkey = PATHDIR "/" PUBKEY;
840
841
734
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;
735
.dh_bits = 1024, .priority = "SECURE256"};
847
736
848
737
{
849
struct argp_option options[] = {
850
{ .name = "debug", .key = 128,
851
.doc = "Debug mode", .group = 3 },
852
{ .name = "connect", .key = 'c',
853
.arg = "ADDRESS:PORT",
854
.doc = "Connect directly to a specific Mandos server",
855
.group = 1 },
856
{ .name = "interface", .key = 'i',
857
.arg = "NAME",
858
.doc = "Interface that will be used to search for Mandos"
859
" servers",
860
.group = 1 },
861
{ .name = "seckey", .key = 's',
862
.arg = "FILE",
863
.doc = "OpenPGP secret key file base name",
864
.group = 1 },
865
{ .name = "pubkey", .key = 'p',
866
.arg = "FILE",
867
.doc = "OpenPGP public key file base name",
868
.group = 2 },
869
{ .name = "dh-bits", .key = 129,
870
.arg = "BITS",
871
.doc = "Bit length of the prime number used in the"
872
" Diffie-Hellman key exchange",
873
.group = 2 },
874
{ .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 },
882
{ .name = NULL }
883
};
884
885
error_t parse_opt(int key, char *arg,
886
struct argp_state *state) {
887
switch(key) {
888
case 128: /* --debug */
889
debug = true;
890
break;
891
case 'c': /* --connect */
892
connect_to = arg;
893
break;
894
case 'i': /* --interface */
895
interface = arg;
896
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");
908
exit(EXIT_FAILURE);
909
}
910
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
911
break;
912
case 130: /* --priority */
913
mc.priority = arg;
914
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
case ARGP_KEY_ARG:
923
argp_usage(state);
924
case ARGP_KEY_END:
925
break;
738
/* Temporary int to get the address of for getopt_long */
739
int debug_int = debug ? 1 : 0;
740
while (true){
741
struct option long_options[] = {
742
{"debug", no_argument, &debug_int, 1},
743
{"connect", required_argument, NULL, 'c'},
744
{"interface", required_argument, NULL, 'i'},
745
{"keydir", required_argument, NULL, 'd'},
746
{"seckey", required_argument, NULL, 's'},
747
{"pubkey", required_argument, NULL, 'p'},
748
{"dh-bits", required_argument, NULL, 'D'},
749
{"priority", required_argument, NULL, 'P'},
750
{0, 0, 0, 0} };
751
752
int option_index = 0;
753
ret = getopt_long (argc, argv, "i:", long_options,
754
&option_index);
755
756
if (ret == -1){
757
break;
758
}
759
760
switch(ret){
761
case 0:
762
break;
763
case 'i':
764
interface = optarg;
765
break;
766
case 'c':
767
connect_to = optarg;
768
break;
769
case 'd':
770
keydir = optarg;
771
break;
772
case 'p':
773
pubkeyfile = optarg;
774
break;
775
case 's':
776
seckeyfile = optarg;
777
break;
778
case 'D':
779
errno = 0;
780
mc.dh_bits = (unsigned int) strtol(optarg, NULL, 10);
781
if (errno){
782
perror("strtol");
783
exit(EXIT_FAILURE);
784
}
785
break;
786
case 'P':
787
mc.priority = optarg;
788
break;
789
case '?':
926
790
default:
927
return ARGP_ERR_UNKNOWN;
928
}
929
return 0;
930
}
931
932
struct argp argp = { .options = options, .parser = parse_opt,
933
.args_doc = "",
934
.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
}
942
}
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
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
}
1007
}
1008
791
/* getopt_long() has already printed a message about the
792
unrcognized option, so just exit. */
793
exit(EXIT_FAILURE);
794
}
795
}
796
/* Set the global debug flag from the temporary int */
797
debug = debug_int ? true : false;
798
}
799
800
pubkeyfile = combinepath(keydir, pubkeyfile);
801
if (pubkeyfile == NULL){
802
perror("combinepath");
803
exitcode = EXIT_FAILURE;
804
goto end;
805
}
806
807
seckeyfile = combinepath(keydir, seckeyfile);
808
if (seckeyfile == NULL){
809
perror("combinepath");
810
goto end;
811
}
812
813
ret = init_gnutls_global(&mc);
814
if (ret == -1){
815
fprintf(stderr, "init_gnutls_global\n");
816
goto end;
817
}
818
1009
819
uid = getuid();
1010
820
gid = getgid();
821
822
ret = setuid(uid);
823
if (ret == -1){
824
perror("setuid");
825
}
1011
826
1012
827
setgid(gid);
1013
if(ret == -1){
828
if (ret == -1){
1014
829
perror("setgid");
1015
830
}
1016
831
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
832
if_index = (AvahiIfIndex) if_nametoindex(interface);
1046
833
if(if_index == 0){
1047
834
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1048
exitcode = EXIT_FAILURE;
1049
goto end;
835
exit(EXIT_FAILURE);
1050
836
}
1051
837
1052
838
if(connect_to != NULL){
1058
844
exitcode = EXIT_FAILURE;
1059
845
goto end;
1060
846
}
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");
847
errno = 0;
848
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
849
if(errno){
850
perror("Bad port number");
1066
851
exitcode = EXIT_FAILURE;
1067
852
goto end;
1068
853
}
1069
port = (uint16_t)tmpmax;
1070
854
*address = '\0';
1071
855
address = connect_to;
1072
856
ret = start_mandos_communication(address, port, if_index, &mc);
1078
862
goto end;
1079
863
}
1080
864
1081
if(not debug){
865
/* If the interface is down, bring it up */
866
{
867
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
868
if(sd < 0) {
869
perror("socket");
870
exitcode = EXIT_FAILURE;
871
goto end;
872
}
873
strcpy(network.ifr_name, interface); /* Spurious warning */
874
ret = ioctl(sd, SIOCGIFFLAGS, &network);
875
if(ret == -1){
876
perror("ioctl SIOCGIFFLAGS");
877
exitcode = EXIT_FAILURE;
878
goto end;
879
}
880
if((network.ifr_flags & IFF_UP) == 0){
881
network.ifr_flags |= IFF_UP;
882
ret = ioctl(sd, SIOCSIFFLAGS, &network);
883
if(ret == -1){
884
perror("ioctl SIOCSIFFLAGS");
885
exitcode = EXIT_FAILURE;
886
goto end;
887
}
888
}
889
close(sd);
890
}
891
892
if (not debug){
1082
893
avahi_set_log_function(empty_log);
1083
894
}
1084
895
1087
898
1088
899
/* Allocate main Avahi loop object */
1089
900
mc.simple_poll = avahi_simple_poll_new();
1090
if(mc.simple_poll == NULL) {
901
if (mc.simple_poll == NULL) {
1091
902
fprintf(stderr, "Avahi: Failed to create simple poll"
1092
903
" object.\n");
1093
904
exitcode = EXIT_FAILURE;
1094
905
goto end;
1095
906
}
1096
907
1097
908
{
1098
909
AvahiServerConfig config;
1099
910
/* Do not publish any local Zeroconf records */
1102
913
config.publish_addresses = 0;
1103
914
config.publish_workstation = 0;
1104
915
config.publish_domain = 0;
1105
916
1106
917
/* Allocate a new server */
1107
918
mc.server = avahi_server_new(avahi_simple_poll_get
1108
919
(mc.simple_poll), &config, NULL,
1109
920
NULL, &error);
1110
921
1111
922
/* Free the Avahi configuration data */
1112
923
avahi_server_config_free(&config);
1113
924
}
1114
925
1115
926
/* Check if creating the Avahi server object succeeded */
1116
if(mc.server == NULL) {
927
if (mc.server == NULL) {
1117
928
fprintf(stderr, "Failed to create Avahi server: %s\n",
1118
929
avahi_strerror(error));
1119
930
exitcode = EXIT_FAILURE;
1125
936
AVAHI_PROTO_INET6,
1126
937
"_mandos._tcp", NULL, 0,
1127
938
browse_callback, &mc);
1128
if(sb == NULL) {
939
if (sb == NULL) {
1129
940
fprintf(stderr, "Failed to create service browser: %s\n",
1130
941
avahi_strerror(avahi_server_errno(mc.server)));
1131
942
exitcode = EXIT_FAILURE;
1133
944
}
1134
945
1135
946
/* Run the main loop */
1136
1137
if(debug){
947
948
if (debug){
1138
949
fprintf(stderr, "Starting Avahi loop search\n");
1139
950
}
1140
951
1141
952
avahi_simple_poll_loop(mc.simple_poll);
1142
953
1143
954
end:
1144
1145
if(debug){
955
956
if (debug){
1146
957
fprintf(stderr, "%s exiting\n", argv[0]);
1147
958
}
1148
959
1149
960
/* Cleanup things */
1150
if(sb != NULL)
961
if (sb != NULL)
1151
962
avahi_s_service_browser_free(sb);
1152
963
1153
if(mc.server != NULL)
964
if (mc.server != NULL)
1154
965
avahi_server_free(mc.server);
1155
1156
if(mc.simple_poll != NULL)
966
967
if (mc.simple_poll != NULL)
1157
968
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
}
1211
}
969
free(pubkeyfile);
970
free(seckeyfile);
1212
971
1213
972
return exitcode;
1214
973
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0