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- Committer: Teddy Hogeborn
- Date: 2008-08-30 19:05:15 UTC
- Revision ID: teddy@fukt.bsnet.se-20080830190515-l7e6vu81yyw5kcku
* mandos.xml (SYNOPSIS): Use <option> and <replaceable> tags. Unify
short and long options.
short and long options.
- files added:
- .bzrignore
- files removed:
- ca.pem
- files renamed:
- server.py => mandos
- server.conf => mandos.conf
- plugbasedclient.c => plugin-runner.c
- plugins.d/passprompt.c => plugins.d/password-prompt.c
- plugins.d/mandosclient.c => plugins.d/password-request.c
- files modified:
- Makefile
added
removed
plugins.d/password-request.c
32
32
#define _LARGEFILE_SOURCE
33
33
#define _FILE_OFFSET_BITS 64
34
34
35
#include <stdio.h>
36
#include <assert.h>
37
#include <stdlib.h>
38
#include <time.h>
39
#include <net/if.h> /* if_nametoindex */
40
#include <sys/ioctl.h> // ioctl, ifreq, SIOCGIFFLAGS, IFF_UP, SIOCSIFFLAGS
41
#include <net/if.h> // ioctl, ifreq, SIOCGIFFLAGS, IFF_UP, SIOCSIFFLAGS
42
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
36
37
#include <stdio.h> /* fprintf(), stderr, fwrite(),
38
stdout, ferror() */
39
#include <stdint.h> /* uint16_t, uint32_t */
40
#include <stddef.h> /* NULL, size_t, ssize_t */
41
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
42
srand() */
43
#include <stdbool.h> /* bool, true */
44
#include <string.h> /* memset(), strcmp(), strlen(),
45
strerror(), asprintf(), strcpy() */
46
#include <sys/ioctl.h> /* ioctl */
47
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
48
sockaddr_in6, PF_INET6,
49
SOCK_STREAM, INET6_ADDRSTRLEN,
50
uid_t, gid_t */
51
#include <inttypes.h> /* PRIu16 */
52
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
53
struct in6_addr, inet_pton(),
54
connect() */
55
#include <assert.h> /* assert() */
56
#include <errno.h> /* perror(), errno */
57
#include <time.h> /* time() */
58
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
59
SIOCSIFFLAGS, if_indextoname(),
60
if_nametoindex(), IF_NAMESIZE */
61
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
62
getuid(), getgid(), setuid(),
63
setgid() */
64
#include <netinet/in.h>
65
#include <arpa/inet.h> /* inet_pton(), htons */
66
#include <iso646.h> /* not, and */
67
#include <argp.h> /* struct argp_option, error_t, struct
68
argp_state, struct argp,
69
argp_parse(), ARGP_KEY_ARG,
70
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
71
72
/* Avahi */
73
/* All Avahi types, constants and functions
74
Avahi*, avahi_*,
75
AVAHI_* */
43
76
#include <avahi-core/core.h>
44
77
#include <avahi-core/lookup.h>
45
78
#include <avahi-core/log.h>
47
80
#include <avahi-common/malloc.h>
48
81
#include <avahi-common/error.h>
49
82
50
//mandos client part
51
#include <sys/types.h> /* socket(), inet_pton() */
52
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
53
struct in6_addr, inet_pton() */
54
#include <gnutls/gnutls.h> /* All GnuTLS stuff */
55
#include <gnutls/openpgp.h> /* GnuTLS with openpgp stuff */
56
57
#include <unistd.h> /* close() */
58
#include <netinet/in.h>
59
#include <stdbool.h> /* true */
60
#include <string.h> /* memset */
61
#include <arpa/inet.h> /* inet_pton() */
62
#include <iso646.h> /* not */
63
64
// gpgme
65
#include <errno.h> /* perror() */
66
#include <gpgme.h>
67
68
// getopt long
69
#include <getopt.h>
83
/* GnuTLS */
84
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
85
functions:
86
gnutls_*
87
init_gnutls_session(),
88
GNUTLS_* */
89
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
90
GNUTLS_OPENPGP_FMT_BASE64 */
91
92
/* GPGME */
93
#include <gpgme.h> /* All GPGME types, constants and
94
functions:
95
gpgme_*
96
GPGME_PROTOCOL_OpenPGP,
97
GPG_ERR_NO_* */
70
98
71
99
#define BUFFER_SIZE 256
72
#define DH_BITS 1024
73
74
static const char *certdir = "/conf/conf.d/mandos";
75
static const char *certfile = "openpgp-client.txt";
76
static const char *certkey = "openpgp-client-key.txt";
77
100
78
101
bool debug = false;
102
static const char *keydir = "/conf/conf.d/mandos";
103
static const char mandos_protocol_version[] = "1";
104
const char *argp_program_version = "password-request 1.0";
105
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
79
106
107
/* Used for passing in values through the Avahi callback functions */
80
108
typedef struct {
81
gnutls_session_t session;
109
AvahiSimplePoll *simple_poll;
110
AvahiServer *server;
82
111
gnutls_certificate_credentials_t cred;
112
unsigned int dh_bits;
83
113
gnutls_dh_params_t dh_params;
84
} encrypted_session;
85
86
87
static ssize_t pgp_packet_decrypt (char *packet, size_t packet_size,
88
char **new_packet,
114
const char *priority;
115
} mandos_context;
116
117
/*
118
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
119
* "buffer_capacity" is how much is currently allocated,
120
* "buffer_length" is how much is already used.
121
*/
122
size_t adjustbuffer(char **buffer, size_t buffer_length,
123
size_t buffer_capacity){
124
if (buffer_length + BUFFER_SIZE > buffer_capacity){
125
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
126
if (buffer == NULL){
127
return 0;
128
}
129
buffer_capacity += BUFFER_SIZE;
130
}
131
return buffer_capacity;
132
}
133
134
/*
135
* Decrypt OpenPGP data using keyrings in HOMEDIR.
136
* Returns -1 on error
137
*/
138
static ssize_t pgp_packet_decrypt (const char *cryptotext,
139
size_t crypto_size,
140
char **plaintext,
89
141
const char *homedir){
90
142
gpgme_data_t dh_crypto, dh_plain;
91
143
gpgme_ctx_t ctx;
92
144
gpgme_error_t rc;
93
145
ssize_t ret;
94
ssize_t new_packet_capacity = 0;
95
ssize_t new_packet_length = 0;
146
size_t plaintext_capacity = 0;
147
ssize_t plaintext_length = 0;
96
148
gpgme_engine_info_t engine_info;
97
149
98
150
if (debug){
99
fprintf(stderr, "Trying to decrypt OpenPGP packet\n");
151
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
100
152
}
101
153
102
154
/* Init GPGME */
108
160
return -1;
109
161
}
110
162
111
/* Set GPGME home directory */
163
/* Set GPGME home directory for the OpenPGP engine only */
112
164
rc = gpgme_get_engine_info (&engine_info);
113
165
if (rc != GPG_ERR_NO_ERROR){
114
166
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
124
176
engine_info = engine_info->next;
125
177
}
126
178
if(engine_info == NULL){
127
fprintf(stderr, "Could not set home dir to %s\n", homedir);
179
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
128
180
return -1;
129
181
}
130
182
131
/* Create new GPGME data buffer from packet buffer */
132
rc = gpgme_data_new_from_mem(&dh_crypto, packet, packet_size, 0);
183
/* Create new GPGME data buffer from memory cryptotext */
184
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
185
0);
133
186
if (rc != GPG_ERR_NO_ERROR){
134
187
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
135
188
gpgme_strsource(rc), gpgme_strerror(rc));
141
194
if (rc != GPG_ERR_NO_ERROR){
142
195
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
143
196
gpgme_strsource(rc), gpgme_strerror(rc));
197
gpgme_data_release(dh_crypto);
144
198
return -1;
145
199
}
146
200
149
203
if (rc != GPG_ERR_NO_ERROR){
150
204
fprintf(stderr, "bad gpgme_new: %s: %s\n",
151
205
gpgme_strsource(rc), gpgme_strerror(rc));
152
return -1;
206
plaintext_length = -1;
207
goto decrypt_end;
153
208
}
154
209
155
/* Decrypt data from the FILE pointer to the plaintext data
156
buffer */
210
/* Decrypt data from the cryptotext data buffer to the plaintext
211
data buffer */
157
212
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
158
213
if (rc != GPG_ERR_NO_ERROR){
159
214
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
160
215
gpgme_strsource(rc), gpgme_strerror(rc));
161
return -1;
216
plaintext_length = -1;
217
if (debug){
218
gpgme_decrypt_result_t result;
219
result = gpgme_op_decrypt_result(ctx);
220
if (result == NULL){
221
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
222
} else {
223
fprintf(stderr, "Unsupported algorithm: %s\n",
224
result->unsupported_algorithm);
225
fprintf(stderr, "Wrong key usage: %u\n",
226
result->wrong_key_usage);
227
if(result->file_name != NULL){
228
fprintf(stderr, "File name: %s\n", result->file_name);
229
}
230
gpgme_recipient_t recipient;
231
recipient = result->recipients;
232
if(recipient){
233
while(recipient != NULL){
234
fprintf(stderr, "Public key algorithm: %s\n",
235
gpgme_pubkey_algo_name(recipient->pubkey_algo));
236
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
237
fprintf(stderr, "Secret key available: %s\n",
238
recipient->status == GPG_ERR_NO_SECKEY
239
? "No" : "Yes");
240
recipient = recipient->next;
241
}
242
}
243
}
244
}
245
goto decrypt_end;
162
246
}
163
247
164
248
if(debug){
165
fprintf(stderr, "Decryption of OpenPGP packet succeeded\n");
166
}
167
168
if (debug){
169
gpgme_decrypt_result_t result;
170
result = gpgme_op_decrypt_result(ctx);
171
if (result == NULL){
172
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
173
} else {
174
fprintf(stderr, "Unsupported algorithm: %s\n",
175
result->unsupported_algorithm);
176
fprintf(stderr, "Wrong key usage: %d\n",
177
result->wrong_key_usage);
178
if(result->file_name != NULL){
179
fprintf(stderr, "File name: %s\n", result->file_name);
180
}
181
gpgme_recipient_t recipient;
182
recipient = result->recipients;
183
if(recipient){
184
while(recipient != NULL){
185
fprintf(stderr, "Public key algorithm: %s\n",
186
gpgme_pubkey_algo_name(recipient->pubkey_algo));
187
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
188
fprintf(stderr, "Secret key available: %s\n",
189
recipient->status == GPG_ERR_NO_SECKEY
190
? "No" : "Yes");
191
recipient = recipient->next;
192
}
193
}
194
}
195
}
196
197
/* Delete the GPGME FILE pointer cryptotext data buffer */
198
gpgme_data_release(dh_crypto);
249
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
250
}
199
251
200
252
/* Seek back to the beginning of the GPGME plaintext data buffer */
201
253
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
202
254
perror("pgpme_data_seek");
255
plaintext_length = -1;
256
goto decrypt_end;
203
257
}
204
258
205
*new_packet = 0;
259
*plaintext = NULL;
206
260
while(true){
207
if (new_packet_length + BUFFER_SIZE > new_packet_capacity){
208
*new_packet = realloc(*new_packet,
209
(unsigned int)new_packet_capacity
210
+ BUFFER_SIZE);
211
if (*new_packet == NULL){
212
perror("realloc");
213
return -1;
214
}
215
new_packet_capacity += BUFFER_SIZE;
261
plaintext_capacity = adjustbuffer(plaintext,
262
(size_t)plaintext_length,
263
plaintext_capacity);
264
if (plaintext_capacity == 0){
265
perror("adjustbuffer");
266
plaintext_length = -1;
267
goto decrypt_end;
216
268
}
217
269
218
ret = gpgme_data_read(dh_plain, *new_packet + new_packet_length,
270
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
219
271
BUFFER_SIZE);
220
272
/* Print the data, if any */
221
273
if (ret == 0){
274
/* EOF */
222
275
break;
223
276
}
224
277
if(ret < 0){
225
278
perror("gpgme_data_read");
226
return -1;
279
plaintext_length = -1;
280
goto decrypt_end;
227
281
}
228
new_packet_length += ret;
282
plaintext_length += ret;
229
283
}
230
284
231
/* FIXME: check characters before printing to screen so to not print
232
terminal control characters */
233
/* if(debug){ */
234
/* fprintf(stderr, "decrypted password is: "); */
235
/* fwrite(*new_packet, 1, new_packet_length, stderr); */
236
/* fprintf(stderr, "\n"); */
237
/* } */
285
if(debug){
286
fprintf(stderr, "Decrypted password is: ");
287
for(ssize_t i = 0; i < plaintext_length; i++){
288
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
289
}
290
fprintf(stderr, "\n");
291
}
292
293
decrypt_end:
294
295
/* Delete the GPGME cryptotext data buffer */
296
gpgme_data_release(dh_crypto);
238
297
239
298
/* Delete the GPGME plaintext data buffer */
240
299
gpgme_data_release(dh_plain);
241
return new_packet_length;
300
return plaintext_length;
242
301
}
243
302
244
303
static const char * safer_gnutls_strerror (int value) {
245
const char *ret = gnutls_strerror (value);
304
const char *ret = gnutls_strerror (value); /* Spurious warning */
246
305
if (ret == NULL)
247
306
ret = "(unknown)";
248
307
return ret;
249
308
}
250
309
310
/* GnuTLS log function callback */
251
311
static void debuggnutls(__attribute__((unused)) int level,
252
312
const char* string){
253
fprintf(stderr, "%s", string);
313
fprintf(stderr, "GnuTLS: %s", string);
254
314
}
255
315
256
static int initgnutls(encrypted_session *es){
257
const char *err;
316
static int init_gnutls_global(mandos_context *mc,
317
const char *pubkeyfilename,
318
const char *seckeyfilename){
258
319
int ret;
259
320
260
321
if(debug){
261
322
fprintf(stderr, "Initializing GnuTLS\n");
262
323
}
263
264
if ((ret = gnutls_global_init ())
265
!= GNUTLS_E_SUCCESS) {
266
fprintf (stderr, "global_init: %s\n", safer_gnutls_strerror(ret));
324
325
ret = gnutls_global_init();
326
if (ret != GNUTLS_E_SUCCESS) {
327
fprintf (stderr, "GnuTLS global_init: %s\n",
328
safer_gnutls_strerror(ret));
267
329
return -1;
268
330
}
269
331
270
332
if (debug){
333
/* "Use a log level over 10 to enable all debugging options."
334
* - GnuTLS manual
335
*/
271
336
gnutls_global_set_log_level(11);
272
337
gnutls_global_set_log_function(debuggnutls);
273
338
}
274
339
275
/* openpgp credentials */
276
if ((ret = gnutls_certificate_allocate_credentials (&es->cred))
277
!= GNUTLS_E_SUCCESS) {
278
fprintf (stderr, "memory error: %s\n",
340
/* OpenPGP credentials */
341
gnutls_certificate_allocate_credentials(&mc->cred);
342
if (ret != GNUTLS_E_SUCCESS){
343
fprintf (stderr, "GnuTLS memory error: %s\n", /* Spurious
344
warning */
279
345
safer_gnutls_strerror(ret));
346
gnutls_global_deinit ();
280
347
return -1;
281
348
}
282
349
283
350
if(debug){
284
351
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
285
" and keyfile %s as GnuTLS credentials\n", certfile,
286
certkey);
352
" and keyfile %s as GnuTLS credentials\n", pubkeyfilename,
353
seckeyfilename);
287
354
}
288
355
289
356
ret = gnutls_certificate_set_openpgp_key_file
290
(es->cred, certfile, certkey, GNUTLS_OPENPGP_FMT_BASE64);
357
(mc->cred, pubkeyfilename, seckeyfilename,
358
GNUTLS_OPENPGP_FMT_BASE64);
291
359
if (ret != GNUTLS_E_SUCCESS) {
292
fprintf
293
(stderr, "Error[%d] while reading the OpenPGP key pair ('%s',"
294
" '%s')\n",
295
ret, certfile, certkey);
296
fprintf(stdout, "The Error is: %s\n",
360
fprintf(stderr,
361
"Error[%d] while reading the OpenPGP key pair ('%s',"
362
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
363
fprintf(stdout, "The GnuTLS error is: %s\n",
297
364
safer_gnutls_strerror(ret));
298
return -1;
299
}
300
301
//GnuTLS server initialization
302
if ((ret = gnutls_dh_params_init (&es->dh_params))
303
!= GNUTLS_E_SUCCESS) {
304
fprintf (stderr, "Error in dh parameter initialization: %s\n",
305
safer_gnutls_strerror(ret));
306
return -1;
307
}
308
309
if ((ret = gnutls_dh_params_generate2 (es->dh_params, DH_BITS))
310
!= GNUTLS_E_SUCCESS) {
311
fprintf (stderr, "Error in prime generation: %s\n",
312
safer_gnutls_strerror(ret));
313
return -1;
314
}
315
316
gnutls_certificate_set_dh_params (es->cred, es->dh_params);
317
318
// GnuTLS session creation
319
if ((ret = gnutls_init (&es->session, GNUTLS_SERVER))
320
!= GNUTLS_E_SUCCESS){
365
goto globalfail;
366
}
367
368
/* GnuTLS server initialization */
369
ret = gnutls_dh_params_init(&mc->dh_params);
370
if (ret != GNUTLS_E_SUCCESS) {
371
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
372
" %s\n", safer_gnutls_strerror(ret));
373
goto globalfail;
374
}
375
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
376
if (ret != GNUTLS_E_SUCCESS) {
377
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
378
safer_gnutls_strerror(ret));
379
goto globalfail;
380
}
381
382
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
383
384
return 0;
385
386
globalfail:
387
388
gnutls_certificate_free_credentials(mc->cred);
389
gnutls_global_deinit();
390
return -1;
391
392
}
393
394
static int init_gnutls_session(mandos_context *mc,
395
gnutls_session_t *session){
396
int ret;
397
/* GnuTLS session creation */
398
ret = gnutls_init(session, GNUTLS_SERVER);
399
if (ret != GNUTLS_E_SUCCESS){
321
400
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
322
401
safer_gnutls_strerror(ret));
323
402
}
324
403
325
if ((ret = gnutls_priority_set_direct (es->session, "NORMAL", &err))
326
!= GNUTLS_E_SUCCESS) {
327
fprintf(stderr, "Syntax error at: %s\n", err);
328
fprintf(stderr, "GnuTLS error: %s\n",
329
safer_gnutls_strerror(ret));
330
return -1;
404
{
405
const char *err;
406
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
407
if (ret != GNUTLS_E_SUCCESS) {
408
fprintf(stderr, "Syntax error at: %s\n", err);
409
fprintf(stderr, "GnuTLS error: %s\n",
410
safer_gnutls_strerror(ret));
411
gnutls_deinit (*session);
412
return -1;
413
}
331
414
}
332
415
333
if ((ret = gnutls_credentials_set
334
(es->session, GNUTLS_CRD_CERTIFICATE, es->cred))
335
!= GNUTLS_E_SUCCESS) {
336
fprintf(stderr, "Error setting a credentials set: %s\n",
416
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
417
mc->cred);
418
if (ret != GNUTLS_E_SUCCESS) {
419
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
337
420
safer_gnutls_strerror(ret));
421
gnutls_deinit (*session);
338
422
return -1;
339
423
}
340
424
341
425
/* ignore client certificate if any. */
342
gnutls_certificate_server_set_request (es->session,
426
gnutls_certificate_server_set_request (*session,
343
427
GNUTLS_CERT_IGNORE);
344
428
345
gnutls_dh_set_prime_bits (es->session, DH_BITS);
429
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
346
430
347
431
return 0;
348
432
}
349
433
434
/* Avahi log function callback */
350
435
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
351
436
__attribute__((unused)) const char *txt){}
352
437
438
/* Called when a Mandos server is found */
353
439
static int start_mandos_communication(const char *ip, uint16_t port,
354
AvahiIfIndex if_index){
440
AvahiIfIndex if_index,
441
mandos_context *mc){
355
442
int ret, tcp_sd;
356
struct sockaddr_in6 to;
357
encrypted_session es;
443
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
358
444
char *buffer = NULL;
359
445
char *decrypted_buffer;
360
446
size_t buffer_length = 0;
361
447
size_t buffer_capacity = 0;
362
448
ssize_t decrypted_buffer_size;
363
size_t written = 0;
449
size_t written;
364
450
int retval = 0;
365
451
char interface[IF_NAMESIZE];
452
gnutls_session_t session;
453
454
ret = init_gnutls_session (mc, &session);
455
if (ret != 0){
456
return -1;
457
}
366
458
367
459
if(debug){
368
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
369
ip, port);
460
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
461
"\n", ip, port);
370
462
}
371
463
372
464
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
377
469
378
470
if(debug){
379
471
if(if_indextoname((unsigned int)if_index, interface) == NULL){
380
if(debug){
381
perror("if_indextoname");
382
}
472
perror("if_indextoname");
383
473
return -1;
384
474
}
385
386
475
fprintf(stderr, "Binding to interface %s\n", interface);
387
476
}
388
477
389
memset(&to,0,sizeof(to)); /* Spurious warning */
390
to.sin6_family = AF_INET6;
391
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
478
memset(&to, 0, sizeof(to));
479
to.in6.sin6_family = AF_INET6;
480
/* It would be nice to have a way to detect if we were passed an
481
IPv4 address here. Now we assume an IPv6 address. */
482
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
392
483
if (ret < 0 ){
393
484
perror("inet_pton");
394
485
return -1;
395
}
486
}
396
487
if(ret == 0){
397
488
fprintf(stderr, "Bad address: %s\n", ip);
398
489
return -1;
399
490
}
400
to.sin6_port = htons(port); /* Spurious warning */
491
to.in6.sin6_port = htons(port); /* Spurious warning */
401
492
402
to.sin6_scope_id = (uint32_t)if_index;
493
to.in6.sin6_scope_id = (uint32_t)if_index;
403
494
404
495
if(debug){
405
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
406
/* char addrstr[INET6_ADDRSTRLEN]; */
407
/* if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr, */
408
/* sizeof(addrstr)) == NULL){ */
409
/* perror("inet_ntop"); */
410
/* } else { */
411
/* fprintf(stderr, "Really connecting to: %s, port %d\n", */
412
/* addrstr, ntohs(to.sin6_port)); */
413
/* } */
496
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
497
port);
498
char addrstr[INET6_ADDRSTRLEN] = "";
499
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
500
sizeof(addrstr)) == NULL){
501
perror("inet_ntop");
502
} else {
503
if(strcmp(addrstr, ip) != 0){
504
fprintf(stderr, "Canonical address form: %s\n", addrstr);
505
}
506
}
414
507
}
415
508
416
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
509
ret = connect(tcp_sd, &to.in, sizeof(to));
417
510
if (ret < 0){
418
511
perror("connect");
419
512
return -1;
420
513
}
421
422
ret = initgnutls (&es);
423
if (ret != 0){
424
retval = -1;
425
return -1;
514
515
const char *out = mandos_protocol_version;
516
written = 0;
517
while (true){
518
size_t out_size = strlen(out);
519
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
520
out_size - written));
521
if (ret == -1){
522
perror("write");
523
retval = -1;
524
goto mandos_end;
525
}
526
written += (size_t)ret;
527
if(written < out_size){
528
continue;
529
} else {
530
if (out == mandos_protocol_version){
531
written = 0;
532
out = "\r\n";
533
} else {
534
break;
535
}
536
}
426
537
}
427
428
gnutls_transport_set_ptr (es.session,
429
(gnutls_transport_ptr_t) tcp_sd);
430
538
431
539
if(debug){
432
540
fprintf(stderr, "Establishing TLS session with %s\n", ip);
433
541
}
434
542
435
ret = gnutls_handshake (es.session);
543
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
544
545
do{
546
ret = gnutls_handshake (session);
547
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
436
548
437
549
if (ret != GNUTLS_E_SUCCESS){
438
550
if(debug){
439
fprintf(stderr, "\n*** Handshake failed ***\n");
551
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
440
552
gnutls_perror (ret);
441
553
}
442
554
retval = -1;
443
goto exit;
555
goto mandos_end;
444
556
}
445
557
446
//Retrieve OpenPGP packet that contains the wanted password
558
/* Read OpenPGP packet that contains the wanted password */
447
559
448
560
if(debug){
449
561
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
451
563
}
452
564
453
565
while(true){
454
if (buffer_length + BUFFER_SIZE > buffer_capacity){
455
buffer = realloc(buffer, buffer_capacity + BUFFER_SIZE);
456
if (buffer == NULL){
457
perror("realloc");
458
goto exit;
459
}
460
buffer_capacity += BUFFER_SIZE;
566
buffer_capacity = adjustbuffer(&buffer, buffer_length,
567
buffer_capacity);
568
if (buffer_capacity == 0){
569
perror("adjustbuffer");
570
retval = -1;
571
goto mandos_end;
461
572
}
462
573
463
ret = gnutls_record_recv
464
(es.session, buffer+buffer_length, BUFFER_SIZE);
574
ret = gnutls_record_recv(session, buffer+buffer_length,
575
BUFFER_SIZE);
465
576
if (ret == 0){
466
577
break;
467
578
}
471
582
case GNUTLS_E_AGAIN:
472
583
break;
473
584
case GNUTLS_E_REHANDSHAKE:
474
ret = gnutls_handshake (es.session);
585
do{
586
ret = gnutls_handshake (session);
587
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
475
588
if (ret < 0){
476
fprintf(stderr, "\n*** Handshake failed ***\n");
589
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
477
590
gnutls_perror (ret);
478
591
retval = -1;
479
goto exit;
592
goto mandos_end;
480
593
}
481
594
break;
482
595
default:
483
596
fprintf(stderr, "Unknown error while reading data from"
484
" encrypted session with mandos server\n");
597
" encrypted session with Mandos server\n");
485
598
retval = -1;
486
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
487
goto exit;
599
gnutls_bye (session, GNUTLS_SHUT_RDWR);
600
goto mandos_end;
488
601
}
489
602
} else {
490
603
buffer_length += (size_t) ret;
491
604
}
492
605
}
493
606
607
if(debug){
608
fprintf(stderr, "Closing TLS session\n");
609
}
610
611
gnutls_bye (session, GNUTLS_SHUT_RDWR);
612
494
613
if (buffer_length > 0){
495
614
decrypted_buffer_size = pgp_packet_decrypt(buffer,
496
615
buffer_length,
497
616
&decrypted_buffer,
498
certdir);
617
keydir);
499
618
if (decrypted_buffer_size >= 0){
619
written = 0;
500
620
while(written < (size_t) decrypted_buffer_size){
501
621
ret = (int)fwrite (decrypted_buffer + written, 1,
502
622
(size_t)decrypted_buffer_size - written,
515
635
} else {
516
636
retval = -1;
517
637
}
518
}
519
520
//shutdown procedure
521
522
if(debug){
523
fprintf(stderr, "Closing TLS session\n");
524
}
525
638
} else {
639
retval = -1;
640
}
641
642
/* Shutdown procedure */
643
644
mandos_end:
526
645
free(buffer);
527
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
528
exit:
529
646
close(tcp_sd);
530
gnutls_deinit (es.session);
531
gnutls_certificate_free_credentials (es.cred);
532
gnutls_global_deinit ();
647
gnutls_deinit (session);
533
648
return retval;
534
649
}
535
650
536
static AvahiSimplePoll *simple_poll = NULL;
537
static AvahiServer *server = NULL;
538
539
static void resolve_callback(
540
AvahiSServiceResolver *r,
541
AvahiIfIndex interface,
542
AVAHI_GCC_UNUSED AvahiProtocol protocol,
543
AvahiResolverEvent event,
544
const char *name,
545
const char *type,
546
const char *domain,
547
const char *host_name,
548
const AvahiAddress *address,
549
uint16_t port,
550
AVAHI_GCC_UNUSED AvahiStringList *txt,
551
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
552
AVAHI_GCC_UNUSED void* userdata) {
553
554
assert(r); /* Spurious warning */
651
static void resolve_callback(AvahiSServiceResolver *r,
652
AvahiIfIndex interface,
653
AVAHI_GCC_UNUSED AvahiProtocol protocol,
654
AvahiResolverEvent event,
655
const char *name,
656
const char *type,
657
const char *domain,
658
const char *host_name,
659
const AvahiAddress *address,
660
uint16_t port,
661
AVAHI_GCC_UNUSED AvahiStringList *txt,
662
AVAHI_GCC_UNUSED AvahiLookupResultFlags
663
flags,
664
void* userdata) {
665
mandos_context *mc = userdata;
666
assert(r);
555
667
556
668
/* Called whenever a service has been resolved successfully or
557
669
timed out */
559
671
switch (event) {
560
672
default:
561
673
case AVAHI_RESOLVER_FAILURE:
562
fprintf(stderr, "(Resolver) Failed to resolve service '%s' of"
563
" type '%s' in domain '%s': %s\n", name, type, domain,
564
avahi_strerror(avahi_server_errno(server)));
674
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
675
" of type '%s' in domain '%s': %s\n", name, type, domain,
676
avahi_strerror(avahi_server_errno(mc->server)));
565
677
break;
566
678
567
679
case AVAHI_RESOLVER_FOUND:
569
681
char ip[AVAHI_ADDRESS_STR_MAX];
570
682
avahi_address_snprint(ip, sizeof(ip), address);
571
683
if(debug){
572
fprintf(stderr, "Mandos server \"%s\" found on %s (%s) on"
573
" port %d\n", name, host_name, ip, port);
684
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
685
PRIu16 ") on port %d\n", name, host_name, ip,
686
interface, port);
574
687
}
575
int ret = start_mandos_communication(ip, port, interface);
688
int ret = start_mandos_communication(ip, port, interface, mc);
576
689
if (ret == 0){
577
exit(EXIT_SUCCESS);
690
avahi_simple_poll_quit(mc->simple_poll);
578
691
}
579
692
}
580
693
}
581
694
avahi_s_service_resolver_free(r);
582
695
}
583
696
584
static void browse_callback(
585
AvahiSServiceBrowser *b,
586
AvahiIfIndex interface,
587
AvahiProtocol protocol,
588
AvahiBrowserEvent event,
589
const char *name,
590
const char *type,
591
const char *domain,
592
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
593
void* userdata) {
594
595
AvahiServer *s = userdata;
596
assert(b); /* Spurious warning */
597
598
/* Called whenever a new services becomes available on the LAN or
599
is removed from the LAN */
600
601
switch (event) {
602
default:
603
case AVAHI_BROWSER_FAILURE:
604
605
fprintf(stderr, "(Browser) %s\n",
606
avahi_strerror(avahi_server_errno(server)));
607
avahi_simple_poll_quit(simple_poll);
608
return;
609
610
case AVAHI_BROWSER_NEW:
611
/* We ignore the returned resolver object. In the callback
612
function we free it. If the server is terminated before
613
the callback function is called the server will free
614
the resolver for us. */
615
616
if (!(avahi_s_service_resolver_new(s, interface, protocol, name,
617
type, domain,
618
AVAHI_PROTO_INET6, 0,
619
resolve_callback, s)))
620
fprintf(stderr, "Failed to resolve service '%s': %s\n", name,
621
avahi_strerror(avahi_server_errno(s)));
622
break;
623
624
case AVAHI_BROWSER_REMOVE:
625
break;
626
627
case AVAHI_BROWSER_ALL_FOR_NOW:
628
case AVAHI_BROWSER_CACHE_EXHAUSTED:
629
break;
697
static void browse_callback( AvahiSServiceBrowser *b,
698
AvahiIfIndex interface,
699
AvahiProtocol protocol,
700
AvahiBrowserEvent event,
701
const char *name,
702
const char *type,
703
const char *domain,
704
AVAHI_GCC_UNUSED AvahiLookupResultFlags
705
flags,
706
void* userdata) {
707
mandos_context *mc = userdata;
708
assert(b);
709
710
/* Called whenever a new services becomes available on the LAN or
711
is removed from the LAN */
712
713
switch (event) {
714
default:
715
case AVAHI_BROWSER_FAILURE:
716
717
fprintf(stderr, "(Avahi browser) %s\n",
718
avahi_strerror(avahi_server_errno(mc->server)));
719
avahi_simple_poll_quit(mc->simple_poll);
720
return;
721
722
case AVAHI_BROWSER_NEW:
723
/* We ignore the returned Avahi resolver object. In the callback
724
function we free it. If the Avahi server is terminated before
725
the callback function is called the Avahi server will free the
726
resolver for us. */
727
728
if (!(avahi_s_service_resolver_new(mc->server, interface,
729
protocol, name, type, domain,
730
AVAHI_PROTO_INET6, 0,
731
resolve_callback, mc)))
732
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
733
name, avahi_strerror(avahi_server_errno(mc->server)));
734
break;
735
736
case AVAHI_BROWSER_REMOVE:
737
break;
738
739
case AVAHI_BROWSER_ALL_FOR_NOW:
740
case AVAHI_BROWSER_CACHE_EXHAUSTED:
741
if(debug){
742
fprintf(stderr, "No Mandos server found, still searching...\n");
630
743
}
744
break;
745
}
631
746
}
632
747
633
748
/* Combines file name and path and returns the malloced new
634
749
string. some sane checks could/should be added */
635
static const char *combinepath(const char *first, const char *second){
636
size_t f_len = strlen(first);
637
size_t s_len = strlen(second);
638
char *tmp = malloc(f_len + s_len + 2);
639
if (tmp == NULL){
750
static char *combinepath(const char *first, const char *second){
751
char *tmp;
752
int ret = asprintf(&tmp, "%s/%s", first, second);
753
if(ret < 0){
640
754
return NULL;
641
755
}
642
if(f_len > 0){
643
memcpy(tmp, first, f_len);
644
}
645
tmp[f_len] = '/';
646
if(s_len > 0){
647
memcpy(tmp + f_len + 1, second, s_len);
648
}
649
tmp[f_len + 1 + s_len] = '\0';
650
756
return tmp;
651
757
}
652
758
653
759
654
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
655
AvahiServerConfig config;
760
int main(int argc, char *argv[]){
656
761
AvahiSServiceBrowser *sb = NULL;
657
762
int error;
658
763
int ret;
659
int returncode = EXIT_SUCCESS;
764
int exitcode = EXIT_SUCCESS;
660
765
const char *interface = "eth0";
661
766
struct ifreq network;
662
767
int sd;
768
uid_t uid;
769
gid_t gid;
663
770
char *connect_to = NULL;
664
771
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
665
666
while (true){
667
static struct option long_options[] = {
668
{"debug", no_argument, (int *)&debug, 1},
669
{"connect", required_argument, 0, 'C'},
670
{"interface", required_argument, 0, 'i'},
671
{"certdir", required_argument, 0, 'd'},
672
{"certkey", required_argument, 0, 'c'},
673
{"certfile", required_argument, 0, 'k'},
674
{0, 0, 0, 0} };
675
676
int option_index = 0;
677
ret = getopt_long (argc, argv, "i:", long_options,
678
&option_index);
679
680
if (ret == -1){
681
break;
682
}
683
684
switch(ret){
685
case 0:
686
break;
687
case 'i':
688
interface = optarg;
689
break;
690
case 'C':
691
connect_to = optarg;
692
break;
693
case 'd':
694
certdir = optarg;
695
break;
696
case 'c':
697
certfile = optarg;
698
break;
699
case 'k':
700
certkey = optarg;
701
break;
702
default:
703
exit(EXIT_FAILURE);
704
}
705
}
706
707
certfile = combinepath(certdir, certfile);
708
if (certfile == NULL){
709
perror("combinepath");
710
returncode = EXIT_FAILURE;
711
goto exit;
712
}
713
714
certkey = combinepath(certdir, certkey);
715
if (certkey == NULL){
716
perror("combinepath");
717
returncode = EXIT_FAILURE;
718
goto exit;
772
char *pubkeyfilename = NULL;
773
char *seckeyfilename = NULL;
774
const char *pubkeyname = "pubkey.txt";
775
const char *seckeyname = "seckey.txt";
776
mandos_context mc = { .simple_poll = NULL, .server = NULL,
777
.dh_bits = 1024, .priority = "SECURE256"};
778
bool gnutls_initalized = false;
779
780
{
781
struct argp_option options[] = {
782
{ .name = "debug", .key = 128,
783
.doc = "Debug mode", .group = 3 },
784
{ .name = "connect", .key = 'c',
785
.arg = "IP",
786
.doc = "Connect directly to a sepcified mandos server",
787
.group = 1 },
788
{ .name = "interface", .key = 'i',
789
.arg = "INTERFACE",
790
.doc = "Interface that Avahi will conntect through",
791
.group = 1 },
792
{ .name = "keydir", .key = 'd',
793
.arg = "KEYDIR",
794
.doc = "Directory where the openpgp keyring is",
795
.group = 1 },
796
{ .name = "seckey", .key = 's',
797
.arg = "SECKEY",
798
.doc = "Secret openpgp key for gnutls authentication",
799
.group = 1 },
800
{ .name = "pubkey", .key = 'p',
801
.arg = "PUBKEY",
802
.doc = "Public openpgp key for gnutls authentication",
803
.group = 2 },
804
{ .name = "dh-bits", .key = 129,
805
.arg = "BITS",
806
.doc = "dh-bits to use in gnutls communication",
807
.group = 2 },
808
{ .name = "priority", .key = 130,
809
.arg = "PRIORITY",
810
.doc = "GNUTLS priority", .group = 1 },
811
{ .name = NULL }
812
};
813
814
815
error_t parse_opt (int key, char *arg,
816
struct argp_state *state) {
817
/* Get the INPUT argument from `argp_parse', which we know is
818
a pointer to our plugin list pointer. */
819
switch (key) {
820
case 128:
821
debug = true;
822
break;
823
case 'c':
824
connect_to = arg;
825
break;
826
case 'i':
827
interface = arg;
828
break;
829
case 'd':
830
keydir = arg;
831
break;
832
case 's':
833
seckeyname = arg;
834
break;
835
case 'p':
836
pubkeyname = arg;
837
break;
838
case 129:
839
errno = 0;
840
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
841
if (errno){
842
perror("strtol");
843
exit(EXIT_FAILURE);
844
}
845
break;
846
case 130:
847
mc.priority = arg;
848
break;
849
case ARGP_KEY_ARG:
850
argp_usage (state);
851
case ARGP_KEY_END:
852
break;
853
default:
854
return ARGP_ERR_UNKNOWN;
855
}
856
return 0;
857
}
858
859
struct argp argp = { .options = options, .parser = parse_opt,
860
.args_doc = "",
861
.doc = "Mandos client -- Get and decrypt"
862
" passwords from mandos server" };
863
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
864
if (ret == ARGP_ERR_UNKNOWN){
865
fprintf(stderr, "Unknown error while parsing arguments\n");
866
exitcode = EXIT_FAILURE;
867
goto end;
868
}
869
}
870
871
pubkeyfilename = combinepath(keydir, pubkeyname);
872
if (pubkeyfilename == NULL){
873
perror("combinepath");
874
exitcode = EXIT_FAILURE;
875
goto end;
876
}
877
878
seckeyfilename = combinepath(keydir, seckeyname);
879
if (seckeyfilename == NULL){
880
perror("combinepath");
881
exitcode = EXIT_FAILURE;
882
goto end;
883
}
884
885
ret = init_gnutls_global(&mc, pubkeyfilename, seckeyfilename);
886
if (ret == -1){
887
fprintf(stderr, "init_gnutls_global failed\n");
888
exitcode = EXIT_FAILURE;
889
goto end;
890
} else {
891
gnutls_initalized = true;
892
}
893
894
/* If the interface is down, bring it up */
895
{
896
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
897
if(sd < 0) {
898
perror("socket");
899
exitcode = EXIT_FAILURE;
900
goto end;
901
}
902
strcpy(network.ifr_name, interface);
903
ret = ioctl(sd, SIOCGIFFLAGS, &network);
904
if(ret == -1){
905
perror("ioctl SIOCGIFFLAGS");
906
exitcode = EXIT_FAILURE;
907
goto end;
908
}
909
if((network.ifr_flags & IFF_UP) == 0){
910
network.ifr_flags |= IFF_UP;
911
ret = ioctl(sd, SIOCSIFFLAGS, &network);
912
if(ret == -1){
913
perror("ioctl SIOCSIFFLAGS");
914
exitcode = EXIT_FAILURE;
915
goto end;
916
}
917
}
918
close(sd);
919
}
920
921
uid = getuid();
922
gid = getgid();
923
924
ret = setuid(uid);
925
if (ret == -1){
926
perror("setuid");
927
}
928
929
setgid(gid);
930
if (ret == -1){
931
perror("setgid");
719
932
}
720
933
721
934
if_index = (AvahiIfIndex) if_nametoindex(interface);
730
943
char *address = strrchr(connect_to, ':');
731
944
if(address == NULL){
732
945
fprintf(stderr, "No colon in address\n");
733
exit(EXIT_FAILURE);
946
exitcode = EXIT_FAILURE;
947
goto end;
734
948
}
735
949
errno = 0;
736
950
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
737
951
if(errno){
738
952
perror("Bad port number");
739
exit(EXIT_FAILURE);
953
exitcode = EXIT_FAILURE;
954
goto end;
740
955
}
741
956
*address = '\0';
742
957
address = connect_to;
743
ret = start_mandos_communication(address, port, if_index);
958
ret = start_mandos_communication(address, port, if_index, &mc);
744
959
if(ret < 0){
745
exit(EXIT_FAILURE);
960
exitcode = EXIT_FAILURE;
746
961
} else {
747
exit(EXIT_SUCCESS);
748
}
749
}
750
751
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
752
if(sd < 0) {
753
perror("socket");
754
returncode = EXIT_FAILURE;
755
goto exit;
756
}
757
strcpy(network.ifr_name, interface);
758
ret = ioctl(sd, SIOCGIFFLAGS, &network);
759
if(ret == -1){
760
761
perror("ioctl SIOCGIFFLAGS");
762
returncode = EXIT_FAILURE;
763
goto exit;
764
}
765
if((network.ifr_flags & IFF_UP) == 0){
766
network.ifr_flags |= IFF_UP;
767
ret = ioctl(sd, SIOCSIFFLAGS, &network);
768
if(ret == -1){
769
perror("ioctl SIOCSIFFLAGS");
770
returncode = EXIT_FAILURE;
771
goto exit;
772
}
773
}
774
close(sd);
962
exitcode = EXIT_SUCCESS;
963
}
964
goto end;
965
}
775
966
776
967
if (not debug){
777
968
avahi_set_log_function(empty_log);
778
969
}
779
970
780
/* Initialize the psuedo-RNG */
971
/* Initialize the pseudo-RNG for Avahi */
781
972
srand((unsigned int) time(NULL));
782
783
/* Allocate main loop object */
784
if (!(simple_poll = avahi_simple_poll_new())) {
785
fprintf(stderr, "Failed to create simple poll object.\n");
786
returncode = EXIT_FAILURE;
787
goto exit;
788
}
789
790
/* Do not publish any local records */
791
avahi_server_config_init(&config);
792
config.publish_hinfo = 0;
793
config.publish_addresses = 0;
794
config.publish_workstation = 0;
795
config.publish_domain = 0;
796
797
/* Allocate a new server */
798
server = avahi_server_new(avahi_simple_poll_get(simple_poll),
799
&config, NULL, NULL, &error);
800
801
/* Free the configuration data */
802
avahi_server_config_free(&config);
803
804
/* Check if creating the server object succeeded */
805
if (!server) {
806
fprintf(stderr, "Failed to create server: %s\n",
973
974
/* Allocate main Avahi loop object */
975
mc.simple_poll = avahi_simple_poll_new();
976
if (mc.simple_poll == NULL) {
977
fprintf(stderr, "Avahi: Failed to create simple poll"
978
" object.\n");
979
exitcode = EXIT_FAILURE;
980
goto end;
981
}
982
983
{
984
AvahiServerConfig config;
985
/* Do not publish any local Zeroconf records */
986
avahi_server_config_init(&config);
987
config.publish_hinfo = 0;
988
config.publish_addresses = 0;
989
config.publish_workstation = 0;
990
config.publish_domain = 0;
991
992
/* Allocate a new server */
993
mc.server = avahi_server_new(avahi_simple_poll_get
994
(mc.simple_poll), &config, NULL,
995
NULL, &error);
996
997
/* Free the Avahi configuration data */
998
avahi_server_config_free(&config);
999
}
1000
1001
/* Check if creating the Avahi server object succeeded */
1002
if (mc.server == NULL) {
1003
fprintf(stderr, "Failed to create Avahi server: %s\n",
807
1004
avahi_strerror(error));
808
returncode = EXIT_FAILURE;
809
goto exit;
1005
exitcode = EXIT_FAILURE;
1006
goto end;
810
1007
}
811
1008
812
/* Create the service browser */
813
sb = avahi_s_service_browser_new(server, if_index,
1009
/* Create the Avahi service browser */
1010
sb = avahi_s_service_browser_new(mc.server, if_index,
814
1011
AVAHI_PROTO_INET6,
815
1012
"_mandos._tcp", NULL, 0,
816
browse_callback, server);
817
if (!sb) {
1013
browse_callback, &mc);
1014
if (sb == NULL) {
818
1015
fprintf(stderr, "Failed to create service browser: %s\n",
819
avahi_strerror(avahi_server_errno(server)));
820
returncode = EXIT_FAILURE;
821
goto exit;
1016
avahi_strerror(avahi_server_errno(mc.server)));
1017
exitcode = EXIT_FAILURE;
1018
goto end;
822
1019
}
823
1020
824
1021
/* Run the main loop */
825
1022
826
1023
if (debug){
827
fprintf(stderr, "Starting avahi loop search\n");
1024
fprintf(stderr, "Starting Avahi loop search\n");
828
1025
}
829
1026
830
avahi_simple_poll_loop(simple_poll);
1027
avahi_simple_poll_loop(mc.simple_poll);
831
1028
832
exit:
1029
end:
833
1030
834
1031
if (debug){
835
1032
fprintf(stderr, "%s exiting\n", argv[0]);
836
1033
}
837
1034
838
1035
/* Cleanup things */
839
if (sb)
1036
if (sb != NULL)
840
1037
avahi_s_service_browser_free(sb);
841
1038
842
if (server)
843
avahi_server_free(server);
844
845
if (simple_poll)
846
avahi_simple_poll_free(simple_poll);
847
free(certfile);
848
free(certkey);
1039
if (mc.server != NULL)
1040
avahi_server_free(mc.server);
1041
1042
if (mc.simple_poll != NULL)
1043
avahi_simple_poll_free(mc.simple_poll);
1044
free(pubkeyfilename);
1045
free(seckeyfilename);
1046
1047
if (gnutls_initalized){
1048
gnutls_certificate_free_credentials(mc.cred);
1049
gnutls_global_deinit ();
1050
}
849
1051
850
return returncode;
1052
return exitcode;
851
1053
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0