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- Committer: Teddy Hogeborn
- Date: 2008-09-03 05:04:40 UTC
- Revision ID: teddy@fukt.bsnet.se-20080903050440-7cwzxestx6pvdy1i
* Makefile (mandos.8): Add dependency on "overview.xml" and
"legalnotice.xml".
(mandos-keygen.8): New target.
(mandos-conf.5): Added dependency on "legalnotice.xml".
(plugin-runner.8mandos): New target
(plugins.d/password-request.8mandos): - '' -
* mandos-options.xml (priority): Make wording server/client neutral.
* plugins.d/password-request.c (main): Changed .arg fields of the argp
options struct to be more
consistent with the manual.
* plugins.d/password-request.xml (OVERVIEW): Moved to after "OPTIONS".
(OPTIONS): Improved wording and names of replaceables.
"legalnotice.xml".
(mandos-keygen.8): New target.
(mandos-conf.5): Added dependency on "legalnotice.xml".
(plugin-runner.8mandos): New target
(plugins.d/password-request.8mandos): - '' -
* mandos-options.xml (priority): Make wording server/client neutral.
* plugins.d/password-request.c (main): Changed .arg fields of the argp
options struct to be more
consistent with the manual.
* plugins.d/password-request.xml (OVERVIEW): Moved to after "OPTIONS".
(OPTIONS): Improved wording and names of replaceables.
- 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
25
25
* along with this program. If not, see
26
26
* <http://www.gnu.org/licenses/>.
27
27
*
28
* Contact the authors at <https://www.fukt.bsnet.se/~belorn/> and
29
* <https://www.fukt.bsnet.se/~teddy/>.
28
* Contact the authors at <mandos@fukt.bsnet.se>.
30
29
*/
31
30
32
31
/* Needed by GPGME, specifically gpgme_data_seek() */
33
32
#define _LARGEFILE_SOURCE
34
33
#define _FILE_OFFSET_BITS 64
35
34
36
#include <stdio.h>
37
#include <assert.h>
38
#include <stdlib.h>
39
#include <time.h>
40
#include <net/if.h> /* if_nametoindex */
41
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_* */
42
76
#include <avahi-core/core.h>
43
77
#include <avahi-core/lookup.h>
44
78
#include <avahi-core/log.h>
46
80
#include <avahi-common/malloc.h>
47
81
#include <avahi-common/error.h>
48
82
49
//mandos client part
50
#include <sys/types.h> /* socket(), inet_pton() */
51
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
52
struct in6_addr, inet_pton() */
53
#include <gnutls/gnutls.h> /* All GnuTLS stuff */
54
#include <gnutls/openpgp.h> /* GnuTLS with openpgp stuff */
55
56
#include <unistd.h> /* close() */
57
#include <netinet/in.h>
58
#include <stdbool.h> /* true */
59
#include <string.h> /* memset */
60
#include <arpa/inet.h> /* inet_pton() */
61
#include <iso646.h> /* not */
62
63
// gpgme
64
#include <errno.h> /* perror() */
65
#include <gpgme.h>
66
67
// getopt long
68
#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_* */
69
98
70
99
#define BUFFER_SIZE 256
71
#define DH_BITS 1024
72
73
const char *certdir = "/conf/conf.d/cryptkeyreq/";
74
const char *certfile = "openpgp-client.txt";
75
const char *certkey = "openpgp-client-key.txt";
76
100
77
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>";
78
106
107
/* Used for passing in values through the Avahi callback functions */
79
108
typedef struct {
80
gnutls_session_t session;
109
AvahiSimplePoll *simple_poll;
110
AvahiServer *server;
81
111
gnutls_certificate_credentials_t cred;
112
unsigned int dh_bits;
82
113
gnutls_dh_params_t dh_params;
83
} encrypted_session;
84
85
86
ssize_t pgp_packet_decrypt (char *packet, size_t packet_size,
87
char **new_packet, const char *homedir){
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,
141
const char *homedir){
88
142
gpgme_data_t dh_crypto, dh_plain;
89
143
gpgme_ctx_t ctx;
90
144
gpgme_error_t rc;
91
145
ssize_t ret;
92
ssize_t new_packet_capacity = 0;
93
ssize_t new_packet_length = 0;
146
size_t plaintext_capacity = 0;
147
ssize_t plaintext_length = 0;
94
148
gpgme_engine_info_t engine_info;
95
149
96
150
if (debug){
97
fprintf(stderr, "Trying to decrypt OpenPGP packet\n");
151
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
98
152
}
99
153
100
154
/* Init GPGME */
106
160
return -1;
107
161
}
108
162
109
/* Set GPGME home directory */
163
/* Set GPGME home directory for the OpenPGP engine only */
110
164
rc = gpgme_get_engine_info (&engine_info);
111
165
if (rc != GPG_ERR_NO_ERROR){
112
166
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
122
176
engine_info = engine_info->next;
123
177
}
124
178
if(engine_info == NULL){
125
fprintf(stderr, "Could not set home dir to %s\n", homedir);
179
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
126
180
return -1;
127
181
}
128
182
129
/* Create new GPGME data buffer from packet buffer */
130
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);
131
186
if (rc != GPG_ERR_NO_ERROR){
132
187
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
133
188
gpgme_strsource(rc), gpgme_strerror(rc));
139
194
if (rc != GPG_ERR_NO_ERROR){
140
195
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
141
196
gpgme_strsource(rc), gpgme_strerror(rc));
197
gpgme_data_release(dh_crypto);
142
198
return -1;
143
199
}
144
200
147
203
if (rc != GPG_ERR_NO_ERROR){
148
204
fprintf(stderr, "bad gpgme_new: %s: %s\n",
149
205
gpgme_strsource(rc), gpgme_strerror(rc));
150
return -1;
206
plaintext_length = -1;
207
goto decrypt_end;
151
208
}
152
209
153
/* Decrypt data from the FILE pointer to the plaintext data
154
buffer */
210
/* Decrypt data from the cryptotext data buffer to the plaintext
211
data buffer */
155
212
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
156
213
if (rc != GPG_ERR_NO_ERROR){
157
214
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
158
215
gpgme_strsource(rc), gpgme_strerror(rc));
159
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;
160
246
}
161
247
162
248
if(debug){
163
fprintf(stderr, "Decryption of OpenPGP packet succeeded\n");
164
}
165
166
if (debug){
167
gpgme_decrypt_result_t result;
168
result = gpgme_op_decrypt_result(ctx);
169
if (result == NULL){
170
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
171
} else {
172
fprintf(stderr, "Unsupported algorithm: %s\n",
173
result->unsupported_algorithm);
174
fprintf(stderr, "Wrong key usage: %d\n",
175
result->wrong_key_usage);
176
if(result->file_name != NULL){
177
fprintf(stderr, "File name: %s\n", result->file_name);
178
}
179
gpgme_recipient_t recipient;
180
recipient = result->recipients;
181
if(recipient){
182
while(recipient != NULL){
183
fprintf(stderr, "Public key algorithm: %s\n",
184
gpgme_pubkey_algo_name(recipient->pubkey_algo));
185
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
186
fprintf(stderr, "Secret key available: %s\n",
187
recipient->status == GPG_ERR_NO_SECKEY
188
? "No" : "Yes");
189
recipient = recipient->next;
190
}
191
}
192
}
193
}
194
195
/* Delete the GPGME FILE pointer cryptotext data buffer */
196
gpgme_data_release(dh_crypto);
249
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
250
}
197
251
198
252
/* Seek back to the beginning of the GPGME plaintext data buffer */
199
253
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
200
254
perror("pgpme_data_seek");
255
plaintext_length = -1;
256
goto decrypt_end;
201
257
}
202
258
203
*new_packet = 0;
259
*plaintext = NULL;
204
260
while(true){
205
if (new_packet_length + BUFFER_SIZE > new_packet_capacity){
206
*new_packet = realloc(*new_packet,
207
(unsigned int)new_packet_capacity
208
+ BUFFER_SIZE);
209
if (*new_packet == NULL){
210
perror("realloc");
211
return -1;
212
}
213
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;
214
268
}
215
269
216
ret = gpgme_data_read(dh_plain, *new_packet + new_packet_length,
270
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
217
271
BUFFER_SIZE);
218
272
/* Print the data, if any */
219
273
if (ret == 0){
274
/* EOF */
220
275
break;
221
276
}
222
277
if(ret < 0){
223
278
perror("gpgme_data_read");
224
return -1;
225
}
226
new_packet_length += ret;
227
}
228
229
/* FIXME: check characters before printing to screen so to not print
230
terminal control characters */
231
/* if(debug){ */
232
/* fprintf(stderr, "decrypted password is: "); */
233
/* fwrite(*new_packet, 1, new_packet_length, stderr); */
234
/* fprintf(stderr, "\n"); */
235
/* } */
279
plaintext_length = -1;
280
goto decrypt_end;
281
}
282
plaintext_length += ret;
283
}
284
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);
236
297
237
298
/* Delete the GPGME plaintext data buffer */
238
299
gpgme_data_release(dh_plain);
239
return new_packet_length;
300
return plaintext_length;
240
301
}
241
302
242
303
static const char * safer_gnutls_strerror (int value) {
243
const char *ret = gnutls_strerror (value);
304
const char *ret = gnutls_strerror (value); /* Spurious warning */
244
305
if (ret == NULL)
245
306
ret = "(unknown)";
246
307
return ret;
247
308
}
248
309
249
void debuggnutls(__attribute__((unused)) int level,
250
const char* string){
251
fprintf(stderr, "%s", string);
310
/* GnuTLS log function callback */
311
static void debuggnutls(__attribute__((unused)) int level,
312
const char* string){
313
fprintf(stderr, "GnuTLS: %s", string);
252
314
}
253
315
254
int initgnutls(encrypted_session *es){
255
const char *err;
316
static int init_gnutls_global(mandos_context *mc,
317
const char *pubkeyfilename,
318
const char *seckeyfilename){
256
319
int ret;
257
320
258
321
if(debug){
259
322
fprintf(stderr, "Initializing GnuTLS\n");
260
323
}
261
262
if ((ret = gnutls_global_init ())
263
!= GNUTLS_E_SUCCESS) {
264
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));
265
329
return -1;
266
330
}
267
331
268
332
if (debug){
333
/* "Use a log level over 10 to enable all debugging options."
334
* - GnuTLS manual
335
*/
269
336
gnutls_global_set_log_level(11);
270
337
gnutls_global_set_log_function(debuggnutls);
271
338
}
272
339
273
/* openpgp credentials */
274
if ((ret = gnutls_certificate_allocate_credentials (&es->cred))
275
!= GNUTLS_E_SUCCESS) {
276
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 */
277
345
safer_gnutls_strerror(ret));
346
gnutls_global_deinit ();
278
347
return -1;
279
348
}
280
349
281
350
if(debug){
282
351
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
283
" and keyfile %s as GnuTLS credentials\n", certfile,
284
certkey);
352
" and keyfile %s as GnuTLS credentials\n", pubkeyfilename,
353
seckeyfilename);
285
354
}
286
355
287
356
ret = gnutls_certificate_set_openpgp_key_file
288
(es->cred, certfile, certkey, GNUTLS_OPENPGP_FMT_BASE64);
357
(mc->cred, pubkeyfilename, seckeyfilename,
358
GNUTLS_OPENPGP_FMT_BASE64);
289
359
if (ret != GNUTLS_E_SUCCESS) {
290
fprintf
291
(stderr, "Error[%d] while reading the OpenPGP key pair ('%s',"
292
" '%s')\n",
293
ret, certfile, certkey);
294
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",
295
364
safer_gnutls_strerror(ret));
296
return -1;
297
}
298
299
//GnuTLS server initialization
300
if ((ret = gnutls_dh_params_init (&es->dh_params))
301
!= GNUTLS_E_SUCCESS) {
302
fprintf (stderr, "Error in dh parameter initialization: %s\n",
303
safer_gnutls_strerror(ret));
304
return -1;
305
}
306
307
if ((ret = gnutls_dh_params_generate2 (es->dh_params, DH_BITS))
308
!= GNUTLS_E_SUCCESS) {
309
fprintf (stderr, "Error in prime generation: %s\n",
310
safer_gnutls_strerror(ret));
311
return -1;
312
}
313
314
gnutls_certificate_set_dh_params (es->cred, es->dh_params);
315
316
// GnuTLS session creation
317
if ((ret = gnutls_init (&es->session, GNUTLS_SERVER))
318
!= 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
static int init_gnutls_session(mandos_context *mc,
394
gnutls_session_t *session){
395
int ret;
396
/* GnuTLS session creation */
397
ret = gnutls_init(session, GNUTLS_SERVER);
398
if (ret != GNUTLS_E_SUCCESS){
319
399
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
320
400
safer_gnutls_strerror(ret));
321
401
}
322
402
323
if ((ret = gnutls_priority_set_direct (es->session, "NORMAL", &err))
324
!= GNUTLS_E_SUCCESS) {
325
fprintf(stderr, "Syntax error at: %s\n", err);
326
fprintf(stderr, "GnuTLS error: %s\n",
327
safer_gnutls_strerror(ret));
328
return -1;
403
{
404
const char *err;
405
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
406
if (ret != GNUTLS_E_SUCCESS) {
407
fprintf(stderr, "Syntax error at: %s\n", err);
408
fprintf(stderr, "GnuTLS error: %s\n",
409
safer_gnutls_strerror(ret));
410
gnutls_deinit (*session);
411
return -1;
412
}
329
413
}
330
414
331
if ((ret = gnutls_credentials_set
332
(es->session, GNUTLS_CRD_CERTIFICATE, es->cred))
333
!= GNUTLS_E_SUCCESS) {
334
fprintf(stderr, "Error setting a credentials set: %s\n",
415
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
416
mc->cred);
417
if (ret != GNUTLS_E_SUCCESS) {
418
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
335
419
safer_gnutls_strerror(ret));
420
gnutls_deinit (*session);
336
421
return -1;
337
422
}
338
423
339
424
/* ignore client certificate if any. */
340
gnutls_certificate_server_set_request (es->session,
425
gnutls_certificate_server_set_request (*session,
341
426
GNUTLS_CERT_IGNORE);
342
427
343
gnutls_dh_set_prime_bits (es->session, DH_BITS);
428
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
344
429
345
430
return 0;
346
431
}
347
432
348
void empty_log(__attribute__((unused)) AvahiLogLevel level,
349
__attribute__((unused)) const char *txt){}
433
/* Avahi log function callback */
434
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
435
__attribute__((unused)) const char *txt){}
350
436
351
int start_mandos_communication(const char *ip, uint16_t port,
352
AvahiIfIndex if_index){
437
/* Called when a Mandos server is found */
438
static int start_mandos_communication(const char *ip, uint16_t port,
439
AvahiIfIndex if_index,
440
mandos_context *mc){
353
441
int ret, tcp_sd;
354
struct sockaddr_in6 to;
355
encrypted_session es;
442
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
356
443
char *buffer = NULL;
357
444
char *decrypted_buffer;
358
445
size_t buffer_length = 0;
359
446
size_t buffer_capacity = 0;
360
447
ssize_t decrypted_buffer_size;
361
size_t written = 0;
448
size_t written;
362
449
int retval = 0;
363
450
char interface[IF_NAMESIZE];
451
gnutls_session_t session;
452
453
ret = init_gnutls_session (mc, &session);
454
if (ret != 0){
455
return -1;
456
}
364
457
365
458
if(debug){
366
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
367
ip, port);
459
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
460
"\n", ip, port);
368
461
}
369
462
370
463
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
373
466
return -1;
374
467
}
375
468
376
if(if_indextoname((unsigned int)if_index, interface) == NULL){
377
if(debug){
469
if(debug){
470
if(if_indextoname((unsigned int)if_index, interface) == NULL){
378
471
perror("if_indextoname");
472
return -1;
379
473
}
380
return -1;
381
}
382
383
if(debug){
384
474
fprintf(stderr, "Binding to interface %s\n", interface);
385
475
}
386
476
387
memset(&to,0,sizeof(to)); /* Spurious warning */
388
to.sin6_family = AF_INET6;
389
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
477
memset(&to, 0, sizeof(to));
478
to.in6.sin6_family = AF_INET6;
479
/* It would be nice to have a way to detect if we were passed an
480
IPv4 address here. Now we assume an IPv6 address. */
481
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
390
482
if (ret < 0 ){
391
483
perror("inet_pton");
392
484
return -1;
393
}
485
}
394
486
if(ret == 0){
395
487
fprintf(stderr, "Bad address: %s\n", ip);
396
488
return -1;
397
489
}
398
to.sin6_port = htons(port); /* Spurious warning */
490
to.in6.sin6_port = htons(port); /* Spurious warning */
399
491
400
to.sin6_scope_id = (uint32_t)if_index;
492
to.in6.sin6_scope_id = (uint32_t)if_index;
401
493
402
494
if(debug){
403
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
404
/* char addrstr[INET6_ADDRSTRLEN]; */
405
/* if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr, */
406
/* sizeof(addrstr)) == NULL){ */
407
/* perror("inet_ntop"); */
408
/* } else { */
409
/* fprintf(stderr, "Really connecting to: %s, port %d\n", */
410
/* addrstr, ntohs(to.sin6_port)); */
411
/* } */
495
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
496
port);
497
char addrstr[INET6_ADDRSTRLEN] = "";
498
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
499
sizeof(addrstr)) == NULL){
500
perror("inet_ntop");
501
} else {
502
if(strcmp(addrstr, ip) != 0){
503
fprintf(stderr, "Canonical address form: %s\n", addrstr);
504
}
505
}
412
506
}
413
507
414
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
508
ret = connect(tcp_sd, &to.in, sizeof(to));
415
509
if (ret < 0){
416
510
perror("connect");
417
511
return -1;
418
512
}
419
513
420
ret = initgnutls (&es);
421
if (ret != 0){
422
retval = -1;
423
return -1;
514
const char *out = mandos_protocol_version;
515
written = 0;
516
while (true){
517
size_t out_size = strlen(out);
518
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
519
out_size - written));
520
if (ret == -1){
521
perror("write");
522
retval = -1;
523
goto mandos_end;
524
}
525
written += (size_t)ret;
526
if(written < out_size){
527
continue;
528
} else {
529
if (out == mandos_protocol_version){
530
written = 0;
531
out = "\r\n";
532
} else {
533
break;
534
}
535
}
424
536
}
425
537
426
gnutls_transport_set_ptr (es.session,
427
(gnutls_transport_ptr_t) tcp_sd);
428
429
538
if(debug){
430
539
fprintf(stderr, "Establishing TLS session with %s\n", ip);
431
540
}
432
541
433
ret = gnutls_handshake (es.session);
542
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
543
544
do{
545
ret = gnutls_handshake (session);
546
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
434
547
435
548
if (ret != GNUTLS_E_SUCCESS){
436
549
if(debug){
437
fprintf(stderr, "\n*** Handshake failed ***\n");
550
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
438
551
gnutls_perror (ret);
439
552
}
440
553
retval = -1;
441
goto exit;
554
goto mandos_end;
442
555
}
443
556
444
//Retrieve OpenPGP packet that contains the wanted password
557
/* Read OpenPGP packet that contains the wanted password */
445
558
446
559
if(debug){
447
560
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
448
561
ip);
449
562
}
450
563
451
564
while(true){
452
if (buffer_length + BUFFER_SIZE > buffer_capacity){
453
buffer = realloc(buffer, buffer_capacity + BUFFER_SIZE);
454
if (buffer == NULL){
455
perror("realloc");
456
goto exit;
457
}
458
buffer_capacity += BUFFER_SIZE;
565
buffer_capacity = adjustbuffer(&buffer, buffer_length,
566
buffer_capacity);
567
if (buffer_capacity == 0){
568
perror("adjustbuffer");
569
retval = -1;
570
goto mandos_end;
459
571
}
460
572
461
ret = gnutls_record_recv
462
(es.session, buffer+buffer_length, BUFFER_SIZE);
573
ret = gnutls_record_recv(session, buffer+buffer_length,
574
BUFFER_SIZE);
463
575
if (ret == 0){
464
576
break;
465
577
}
469
581
case GNUTLS_E_AGAIN:
470
582
break;
471
583
case GNUTLS_E_REHANDSHAKE:
472
ret = gnutls_handshake (es.session);
584
do{
585
ret = gnutls_handshake (session);
586
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
473
587
if (ret < 0){
474
fprintf(stderr, "\n*** Handshake failed ***\n");
588
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
475
589
gnutls_perror (ret);
476
590
retval = -1;
477
goto exit;
591
goto mandos_end;
478
592
}
479
593
break;
480
594
default:
481
595
fprintf(stderr, "Unknown error while reading data from"
482
" encrypted session with mandos server\n");
596
" encrypted session with Mandos server\n");
483
597
retval = -1;
484
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
485
goto exit;
598
gnutls_bye (session, GNUTLS_SHUT_RDWR);
599
goto mandos_end;
486
600
}
487
601
} else {
488
602
buffer_length += (size_t) ret;
489
603
}
490
604
}
491
605
606
if(debug){
607
fprintf(stderr, "Closing TLS session\n");
608
}
609
610
gnutls_bye (session, GNUTLS_SHUT_RDWR);
611
492
612
if (buffer_length > 0){
493
613
decrypted_buffer_size = pgp_packet_decrypt(buffer,
494
614
buffer_length,
495
615
&decrypted_buffer,
496
certdir);
616
keydir);
497
617
if (decrypted_buffer_size >= 0){
618
written = 0;
498
619
while(written < (size_t) decrypted_buffer_size){
499
620
ret = (int)fwrite (decrypted_buffer + written, 1,
500
621
(size_t)decrypted_buffer_size - written,
513
634
} else {
514
635
retval = -1;
515
636
}
516
}
517
518
//shutdown procedure
519
520
if(debug){
521
fprintf(stderr, "Closing TLS session\n");
522
}
523
637
} else {
638
retval = -1;
639
}
640
641
/* Shutdown procedure */
642
643
mandos_end:
524
644
free(buffer);
525
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
526
exit:
527
645
close(tcp_sd);
528
gnutls_deinit (es.session);
529
gnutls_certificate_free_credentials (es.cred);
530
gnutls_global_deinit ();
646
gnutls_deinit (session);
531
647
return retval;
532
648
}
533
649
534
static AvahiSimplePoll *simple_poll = NULL;
535
static AvahiServer *server = NULL;
536
537
static void resolve_callback(
538
AvahiSServiceResolver *r,
539
AvahiIfIndex interface,
540
AVAHI_GCC_UNUSED AvahiProtocol protocol,
541
AvahiResolverEvent event,
542
const char *name,
543
const char *type,
544
const char *domain,
545
const char *host_name,
546
const AvahiAddress *address,
547
uint16_t port,
548
AVAHI_GCC_UNUSED AvahiStringList *txt,
549
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
550
AVAHI_GCC_UNUSED void* userdata) {
551
552
assert(r); /* Spurious warning */
650
static void resolve_callback(AvahiSServiceResolver *r,
651
AvahiIfIndex interface,
652
AVAHI_GCC_UNUSED AvahiProtocol protocol,
653
AvahiResolverEvent event,
654
const char *name,
655
const char *type,
656
const char *domain,
657
const char *host_name,
658
const AvahiAddress *address,
659
uint16_t port,
660
AVAHI_GCC_UNUSED AvahiStringList *txt,
661
AVAHI_GCC_UNUSED AvahiLookupResultFlags
662
flags,
663
void* userdata) {
664
mandos_context *mc = userdata;
665
assert(r);
553
666
554
667
/* Called whenever a service has been resolved successfully or
555
668
timed out */
557
670
switch (event) {
558
671
default:
559
672
case AVAHI_RESOLVER_FAILURE:
560
fprintf(stderr, "(Resolver) Failed to resolve service '%s' of"
561
" type '%s' in domain '%s': %s\n", name, type, domain,
562
avahi_strerror(avahi_server_errno(server)));
673
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
674
" of type '%s' in domain '%s': %s\n", name, type, domain,
675
avahi_strerror(avahi_server_errno(mc->server)));
563
676
break;
564
677
565
678
case AVAHI_RESOLVER_FOUND:
567
680
char ip[AVAHI_ADDRESS_STR_MAX];
568
681
avahi_address_snprint(ip, sizeof(ip), address);
569
682
if(debug){
570
fprintf(stderr, "Mandos server \"%s\" found on %s (%s) on"
571
" port %d\n", name, host_name, ip, port);
683
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
684
PRIu16 ") on port %d\n", name, host_name, ip,
685
interface, port);
572
686
}
573
int ret = start_mandos_communication(ip, port, interface);
687
int ret = start_mandos_communication(ip, port, interface, mc);
574
688
if (ret == 0){
575
exit(EXIT_SUCCESS);
689
avahi_simple_poll_quit(mc->simple_poll);
576
690
}
577
691
}
578
692
}
579
693
avahi_s_service_resolver_free(r);
580
694
}
581
695
582
static void browse_callback(
583
AvahiSServiceBrowser *b,
584
AvahiIfIndex interface,
585
AvahiProtocol protocol,
586
AvahiBrowserEvent event,
587
const char *name,
588
const char *type,
589
const char *domain,
590
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
591
void* userdata) {
592
593
AvahiServer *s = userdata;
594
assert(b); /* Spurious warning */
595
596
/* Called whenever a new services becomes available on the LAN or
597
is removed from the LAN */
598
599
switch (event) {
600
default:
601
case AVAHI_BROWSER_FAILURE:
602
603
fprintf(stderr, "(Browser) %s\n",
604
avahi_strerror(avahi_server_errno(server)));
605
avahi_simple_poll_quit(simple_poll);
606
return;
607
608
case AVAHI_BROWSER_NEW:
609
/* We ignore the returned resolver object. In the callback
610
function we free it. If the server is terminated before
611
the callback function is called the server will free
612
the resolver for us. */
613
614
if (!(avahi_s_service_resolver_new(s, interface, protocol, name,
615
type, domain,
616
AVAHI_PROTO_INET6, 0,
617
resolve_callback, s)))
618
fprintf(stderr, "Failed to resolve service '%s': %s\n", name,
619
avahi_strerror(avahi_server_errno(s)));
620
break;
621
622
case AVAHI_BROWSER_REMOVE:
623
break;
624
625
case AVAHI_BROWSER_ALL_FOR_NOW:
626
case AVAHI_BROWSER_CACHE_EXHAUSTED:
627
break;
696
static void browse_callback( AvahiSServiceBrowser *b,
697
AvahiIfIndex interface,
698
AvahiProtocol protocol,
699
AvahiBrowserEvent event,
700
const char *name,
701
const char *type,
702
const char *domain,
703
AVAHI_GCC_UNUSED AvahiLookupResultFlags
704
flags,
705
void* userdata) {
706
mandos_context *mc = userdata;
707
assert(b);
708
709
/* Called whenever a new services becomes available on the LAN or
710
is removed from the LAN */
711
712
switch (event) {
713
default:
714
case AVAHI_BROWSER_FAILURE:
715
716
fprintf(stderr, "(Avahi browser) %s\n",
717
avahi_strerror(avahi_server_errno(mc->server)));
718
avahi_simple_poll_quit(mc->simple_poll);
719
return;
720
721
case AVAHI_BROWSER_NEW:
722
/* We ignore the returned Avahi resolver object. In the callback
723
function we free it. If the Avahi server is terminated before
724
the callback function is called the Avahi server will free the
725
resolver for us. */
726
727
if (!(avahi_s_service_resolver_new(mc->server, interface,
728
protocol, name, type, domain,
729
AVAHI_PROTO_INET6, 0,
730
resolve_callback, mc)))
731
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
732
name, avahi_strerror(avahi_server_errno(mc->server)));
733
break;
734
735
case AVAHI_BROWSER_REMOVE:
736
break;
737
738
case AVAHI_BROWSER_ALL_FOR_NOW:
739
case AVAHI_BROWSER_CACHE_EXHAUSTED:
740
if(debug){
741
fprintf(stderr, "No Mandos server found, still searching...\n");
628
742
}
743
break;
744
}
629
745
}
630
746
631
/* combinds file name and path and returns the malloced new string. som sane checks could/should be added */
632
const char *combinepath(const char *first, const char *second){
747
/* Combines file name and path and returns the malloced new
748
string. some sane checks could/should be added */
749
static char *combinepath(const char *first, const char *second){
633
750
char *tmp;
634
tmp = malloc(strlen(first) + strlen(second) + 2);
635
if (tmp == NULL){
636
perror("malloc");
751
int ret = asprintf(&tmp, "%s/%s", first, second);
752
if(ret < 0){
637
753
return NULL;
638
754
}
639
strcpy(tmp, first);
640
if (first[0] != '\0' and first[strlen(first) - 1] != '/'){
641
strcat(tmp, "/");
642
}
643
strcat(tmp, second);
644
755
return tmp;
645
756
}
646
757
647
758
648
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
649
AvahiServerConfig config;
759
int main(int argc, char *argv[]){
650
760
AvahiSServiceBrowser *sb = NULL;
651
761
int error;
652
762
int ret;
653
int returncode = EXIT_SUCCESS;
654
const char *interface = NULL;
763
int exitcode = EXIT_SUCCESS;
764
const char *interface = "eth0";
765
struct ifreq network;
766
int sd;
767
uid_t uid;
768
gid_t gid;
769
char *connect_to = NULL;
655
770
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
656
char *connect_to = NULL;
657
658
while (true){
659
static struct option long_options[] = {
660
{"debug", no_argument, (int *)&debug, 1},
661
{"connect", required_argument, 0, 'C'},
662
{"interface", required_argument, 0, 'i'},
663
{"certdir", required_argument, 0, 'd'},
664
{"certkey", required_argument, 0, 'c'},
665
{"certfile", required_argument, 0, 'k'},
666
{0, 0, 0, 0} };
667
668
int option_index = 0;
669
ret = getopt_long (argc, argv, "i:", long_options,
670
&option_index);
671
672
if (ret == -1){
673
break;
674
}
675
676
switch(ret){
677
case 0:
678
break;
679
case 'i':
680
interface = optarg;
681
break;
682
case 'C':
683
connect_to = optarg;
684
break;
685
case 'd':
686
certdir = optarg;
687
break;
688
case 'c':
689
certfile = optarg;
690
break;
691
case 'k':
692
certkey = optarg;
693
break;
694
default:
695
exit(EXIT_FAILURE);
696
}
697
}
698
699
certfile = combinepath(certdir, certfile);
700
if (certfile == NULL){
701
goto exit;
702
}
703
704
if(interface != NULL){
705
if_index = (AvahiIfIndex) if_nametoindex(interface);
706
if(if_index == 0){
707
fprintf(stderr, "No such interface: \"%s\"\n", interface);
708
exit(EXIT_FAILURE);
709
}
771
char *pubkeyfilename = NULL;
772
char *seckeyfilename = NULL;
773
const char *pubkeyname = "pubkey.txt";
774
const char *seckeyname = "seckey.txt";
775
mandos_context mc = { .simple_poll = NULL, .server = NULL,
776
.dh_bits = 1024, .priority = "SECURE256"
777
":!CTYPE-X.509:+CTYPE-OPENPGP" };
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 = "ADDRESS:PORT",
786
.doc = "Connect directly to a specific Mandos server",
787
.group = 1 },
788
{ .name = "interface", .key = 'i',
789
.arg = "NAME",
790
.doc = "Interface that will be used to search for Mandos"
791
" servers",
792
.group = 1 },
793
{ .name = "keydir", .key = 'd',
794
.arg = "DIRECTORY",
795
.doc = "Directory to read the OpenPGP key files from",
796
.group = 1 },
797
{ .name = "seckey", .key = 's',
798
.arg = "FILE",
799
.doc = "OpenPGP secret key file base name",
800
.group = 1 },
801
{ .name = "pubkey", .key = 'p',
802
.arg = "FILE",
803
.doc = "OpenPGP public key file base name",
804
.group = 2 },
805
{ .name = "dh-bits", .key = 129,
806
.arg = "BITS",
807
.doc = "Bit length of the prime number used in the"
808
" Diffie-Hellman key exchange",
809
.group = 2 },
810
{ .name = "priority", .key = 130,
811
.arg = "STRING",
812
.doc = "GnuTLS priority string for the TLS handshake",
813
.group = 1 },
814
{ .name = NULL }
815
};
816
817
error_t parse_opt (int key, char *arg,
818
struct argp_state *state) {
819
/* Get the INPUT argument from `argp_parse', which we know is
820
a pointer to our plugin list pointer. */
821
switch (key) {
822
case 128: /* --debug */
823
debug = true;
824
break;
825
case 'c': /* --connect */
826
connect_to = arg;
827
break;
828
case 'i': /* --interface */
829
interface = arg;
830
break;
831
case 'd': /* --keydir */
832
keydir = arg;
833
break;
834
case 's': /* --seckey */
835
seckeyname = arg;
836
break;
837
case 'p': /* --pubkey */
838
pubkeyname = arg;
839
break;
840
case 129: /* --dh-bits */
841
errno = 0;
842
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
843
if (errno){
844
perror("strtol");
845
exit(EXIT_FAILURE);
846
}
847
break;
848
case 130: /* --priority */
849
mc.priority = arg;
850
break;
851
case ARGP_KEY_ARG:
852
argp_usage (state);
853
case ARGP_KEY_END:
854
break;
855
default:
856
return ARGP_ERR_UNKNOWN;
857
}
858
return 0;
859
}
860
861
struct argp argp = { .options = options, .parser = parse_opt,
862
.args_doc = "",
863
.doc = "Mandos client -- Get and decrypt"
864
" passwords from a Mandos server" };
865
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
866
if (ret == ARGP_ERR_UNKNOWN){
867
fprintf(stderr, "Unknown error while parsing arguments\n");
868
exitcode = EXIT_FAILURE;
869
goto end;
870
}
871
}
872
873
pubkeyfilename = combinepath(keydir, pubkeyname);
874
if (pubkeyfilename == NULL){
875
perror("combinepath");
876
exitcode = EXIT_FAILURE;
877
goto end;
878
}
879
880
seckeyfilename = combinepath(keydir, seckeyname);
881
if (seckeyfilename == NULL){
882
perror("combinepath");
883
exitcode = EXIT_FAILURE;
884
goto end;
885
}
886
887
ret = init_gnutls_global(&mc, pubkeyfilename, seckeyfilename);
888
if (ret == -1){
889
fprintf(stderr, "init_gnutls_global failed\n");
890
exitcode = EXIT_FAILURE;
891
goto end;
892
} else {
893
gnutls_initalized = true;
894
}
895
896
/* If the interface is down, bring it up */
897
{
898
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
899
if(sd < 0) {
900
perror("socket");
901
exitcode = EXIT_FAILURE;
902
goto end;
903
}
904
strcpy(network.ifr_name, interface);
905
ret = ioctl(sd, SIOCGIFFLAGS, &network);
906
if(ret == -1){
907
perror("ioctl SIOCGIFFLAGS");
908
exitcode = EXIT_FAILURE;
909
goto end;
910
}
911
if((network.ifr_flags & IFF_UP) == 0){
912
network.ifr_flags |= IFF_UP;
913
ret = ioctl(sd, SIOCSIFFLAGS, &network);
914
if(ret == -1){
915
perror("ioctl SIOCSIFFLAGS");
916
exitcode = EXIT_FAILURE;
917
goto end;
918
}
919
}
920
close(sd);
921
}
922
923
uid = getuid();
924
gid = getgid();
925
926
ret = setuid(uid);
927
if (ret == -1){
928
perror("setuid");
929
}
930
931
setgid(gid);
932
if (ret == -1){
933
perror("setgid");
934
}
935
936
if_index = (AvahiIfIndex) if_nametoindex(interface);
937
if(if_index == 0){
938
fprintf(stderr, "No such interface: \"%s\"\n", interface);
939
exit(EXIT_FAILURE);
710
940
}
711
941
712
942
if(connect_to != NULL){
715
945
char *address = strrchr(connect_to, ':');
716
946
if(address == NULL){
717
947
fprintf(stderr, "No colon in address\n");
718
exit(EXIT_FAILURE);
948
exitcode = EXIT_FAILURE;
949
goto end;
719
950
}
720
951
errno = 0;
721
952
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
722
953
if(errno){
723
954
perror("Bad port number");
724
exit(EXIT_FAILURE);
955
exitcode = EXIT_FAILURE;
956
goto end;
725
957
}
726
958
*address = '\0';
727
959
address = connect_to;
728
ret = start_mandos_communication(address, port, if_index);
960
ret = start_mandos_communication(address, port, if_index, &mc);
729
961
if(ret < 0){
730
exit(EXIT_FAILURE);
962
exitcode = EXIT_FAILURE;
731
963
} else {
732
exit(EXIT_SUCCESS);
964
exitcode = EXIT_SUCCESS;
733
965
}
734
}
735
736
certkey = combinepath(certdir, certkey);
737
if (certkey == NULL){
738
goto exit;
966
goto end;
739
967
}
740
968
741
969
if (not debug){
742
970
avahi_set_log_function(empty_log);
743
971
}
744
972
745
/* Initialize the psuedo-RNG */
973
/* Initialize the pseudo-RNG for Avahi */
746
974
srand((unsigned int) time(NULL));
747
748
/* Allocate main loop object */
749
if (!(simple_poll = avahi_simple_poll_new())) {
750
fprintf(stderr, "Failed to create simple poll object.\n");
751
752
goto exit;
753
}
754
755
/* Do not publish any local records */
756
avahi_server_config_init(&config);
757
config.publish_hinfo = 0;
758
config.publish_addresses = 0;
759
config.publish_workstation = 0;
760
config.publish_domain = 0;
761
762
/* Allocate a new server */
763
server = avahi_server_new(avahi_simple_poll_get(simple_poll),
764
&config, NULL, NULL, &error);
765
766
/* Free the configuration data */
767
avahi_server_config_free(&config);
768
769
/* Check if creating the server object succeeded */
770
if (!server) {
771
fprintf(stderr, "Failed to create server: %s\n",
975
976
/* Allocate main Avahi loop object */
977
mc.simple_poll = avahi_simple_poll_new();
978
if (mc.simple_poll == NULL) {
979
fprintf(stderr, "Avahi: Failed to create simple poll"
980
" object.\n");
981
exitcode = EXIT_FAILURE;
982
goto end;
983
}
984
985
{
986
AvahiServerConfig config;
987
/* Do not publish any local Zeroconf records */
988
avahi_server_config_init(&config);
989
config.publish_hinfo = 0;
990
config.publish_addresses = 0;
991
config.publish_workstation = 0;
992
config.publish_domain = 0;
993
994
/* Allocate a new server */
995
mc.server = avahi_server_new(avahi_simple_poll_get
996
(mc.simple_poll), &config, NULL,
997
NULL, &error);
998
999
/* Free the Avahi configuration data */
1000
avahi_server_config_free(&config);
1001
}
1002
1003
/* Check if creating the Avahi server object succeeded */
1004
if (mc.server == NULL) {
1005
fprintf(stderr, "Failed to create Avahi server: %s\n",
772
1006
avahi_strerror(error));
773
returncode = EXIT_FAILURE;
774
goto exit;
1007
exitcode = EXIT_FAILURE;
1008
goto end;
775
1009
}
776
1010
777
/* Create the service browser */
778
sb = avahi_s_service_browser_new(server, if_index,
1011
/* Create the Avahi service browser */
1012
sb = avahi_s_service_browser_new(mc.server, if_index,
779
1013
AVAHI_PROTO_INET6,
780
1014
"_mandos._tcp", NULL, 0,
781
browse_callback, server);
782
if (!sb) {
1015
browse_callback, &mc);
1016
if (sb == NULL) {
783
1017
fprintf(stderr, "Failed to create service browser: %s\n",
784
avahi_strerror(avahi_server_errno(server)));
785
returncode = EXIT_FAILURE;
786
goto exit;
1018
avahi_strerror(avahi_server_errno(mc.server)));
1019
exitcode = EXIT_FAILURE;
1020
goto end;
787
1021
}
788
1022
789
1023
/* Run the main loop */
790
1024
791
1025
if (debug){
792
fprintf(stderr, "Starting avahi loop search\n");
1026
fprintf(stderr, "Starting Avahi loop search\n");
793
1027
}
794
1028
795
avahi_simple_poll_loop(simple_poll);
796
797
exit:
798
1029
avahi_simple_poll_loop(mc.simple_poll);
1030
1031
end:
1032
799
1033
if (debug){
800
1034
fprintf(stderr, "%s exiting\n", argv[0]);
801
1035
}
802
1036
803
1037
/* Cleanup things */
804
if (sb)
1038
if (sb != NULL)
805
1039
avahi_s_service_browser_free(sb);
806
1040
807
if (server)
808
avahi_server_free(server);
809
810
if (simple_poll)
811
avahi_simple_poll_free(simple_poll);
812
free(certfile);
813
free(certkey);
814
815
return returncode;
1041
if (mc.server != NULL)
1042
avahi_server_free(mc.server);
1043
1044
if (mc.simple_poll != NULL)
1045
avahi_simple_poll_free(mc.simple_poll);
1046
free(pubkeyfilename);
1047
free(seckeyfilename);
1048
1049
if (gnutls_initalized){
1050
gnutls_certificate_free_credentials(mc.cred);
1051
gnutls_global_deinit ();
1052
}
1053
1054
return exitcode;
816
1055
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0