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- Committer: Teddy Hogeborn
- Date: 2008-09-03 13:59:58 UTC
- Revision ID: teddy@fukt.bsnet.se-20080903135958-k0he2xucqmx7nz4b
* plugins.d/password-request.xml (OPTIONS): Improved wording.
(FILES): Add text about public and secret key files.
(BUGS): Commented out.
(EXAMPLE): Added examples.
(FILES): Add text about public and secret key files.
(BUGS): Commented out.
(EXAMPLE): Added examples.
- 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;
227
}
228
new_packet_length += ret;
229
}
230
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
/* } */
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);
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
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){
321
399
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
322
400
safer_gnutls_strerror(ret));
323
401
}
324
402
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;
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
}
331
413
}
332
414
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",
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",
337
419
safer_gnutls_strerror(ret));
420
gnutls_deinit (*session);
338
421
return -1;
339
422
}
340
423
341
424
/* ignore client certificate if any. */
342
gnutls_certificate_server_set_request (es->session,
425
gnutls_certificate_server_set_request (*session,
343
426
GNUTLS_CERT_IGNORE);
344
427
345
gnutls_dh_set_prime_bits (es->session, DH_BITS);
428
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
346
429
347
430
return 0;
348
431
}
349
432
433
/* Avahi log function callback */
350
434
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
351
435
__attribute__((unused)) const char *txt){}
352
436
437
/* Called when a Mandos server is found */
353
438
static int start_mandos_communication(const char *ip, uint16_t port,
354
AvahiIfIndex if_index){
439
AvahiIfIndex if_index,
440
mandos_context *mc){
355
441
int ret, tcp_sd;
356
struct sockaddr_in6 to;
357
encrypted_session es;
442
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
358
443
char *buffer = NULL;
359
444
char *decrypted_buffer;
360
445
size_t buffer_length = 0;
361
446
size_t buffer_capacity = 0;
362
447
ssize_t decrypted_buffer_size;
363
size_t written = 0;
448
size_t written;
364
449
int retval = 0;
365
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
}
366
457
367
458
if(debug){
368
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
369
ip, port);
459
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
460
"\n", ip, port);
370
461
}
371
462
372
463
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
374
465
perror("socket");
375
466
return -1;
376
467
}
377
468
378
469
if(debug){
379
470
if(if_indextoname((unsigned int)if_index, interface) == NULL){
380
if(debug){
381
perror("if_indextoname");
382
}
471
perror("if_indextoname");
383
472
return -1;
384
473
}
385
386
474
fprintf(stderr, "Binding to interface %s\n", interface);
387
475
}
388
476
389
memset(&to,0,sizeof(to)); /* Spurious warning */
390
to.sin6_family = AF_INET6;
391
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);
392
482
if (ret < 0 ){
393
483
perror("inet_pton");
394
484
return -1;
395
}
485
}
396
486
if(ret == 0){
397
487
fprintf(stderr, "Bad address: %s\n", ip);
398
488
return -1;
399
489
}
400
to.sin6_port = htons(port); /* Spurious warning */
490
to.in6.sin6_port = htons(port); /* Spurious warning */
401
491
402
to.sin6_scope_id = (uint32_t)if_index;
492
to.in6.sin6_scope_id = (uint32_t)if_index;
403
493
404
494
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
/* } */
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
}
414
506
}
415
507
416
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
508
ret = connect(tcp_sd, &to.in, sizeof(to));
417
509
if (ret < 0){
418
510
perror("connect");
419
511
return -1;
420
512
}
421
513
422
ret = initgnutls (&es);
423
if (ret != 0){
424
retval = -1;
425
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
}
426
536
}
427
537
428
gnutls_transport_set_ptr (es.session,
429
(gnutls_transport_ptr_t) tcp_sd);
430
431
538
if(debug){
432
539
fprintf(stderr, "Establishing TLS session with %s\n", ip);
433
540
}
434
541
435
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);
436
547
437
548
if (ret != GNUTLS_E_SUCCESS){
438
549
if(debug){
439
fprintf(stderr, "\n*** Handshake failed ***\n");
550
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
440
551
gnutls_perror (ret);
441
552
}
442
553
retval = -1;
443
goto exit;
554
goto mandos_end;
444
555
}
445
556
446
//Retrieve OpenPGP packet that contains the wanted password
557
/* Read OpenPGP packet that contains the wanted password */
447
558
448
559
if(debug){
449
560
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
450
561
ip);
451
562
}
452
563
453
564
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;
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;
461
571
}
462
572
463
ret = gnutls_record_recv
464
(es.session, buffer+buffer_length, BUFFER_SIZE);
573
ret = gnutls_record_recv(session, buffer+buffer_length,
574
BUFFER_SIZE);
465
575
if (ret == 0){
466
576
break;
467
577
}
471
581
case GNUTLS_E_AGAIN:
472
582
break;
473
583
case GNUTLS_E_REHANDSHAKE:
474
ret = gnutls_handshake (es.session);
584
do{
585
ret = gnutls_handshake (session);
586
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
475
587
if (ret < 0){
476
fprintf(stderr, "\n*** Handshake failed ***\n");
588
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
477
589
gnutls_perror (ret);
478
590
retval = -1;
479
goto exit;
591
goto mandos_end;
480
592
}
481
593
break;
482
594
default:
483
595
fprintf(stderr, "Unknown error while reading data from"
484
" encrypted session with mandos server\n");
596
" encrypted session with Mandos server\n");
485
597
retval = -1;
486
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
487
goto exit;
598
gnutls_bye (session, GNUTLS_SHUT_RDWR);
599
goto mandos_end;
488
600
}
489
601
} else {
490
602
buffer_length += (size_t) ret;
491
603
}
492
604
}
493
605
606
if(debug){
607
fprintf(stderr, "Closing TLS session\n");
608
}
609
610
gnutls_bye (session, GNUTLS_SHUT_RDWR);
611
494
612
if (buffer_length > 0){
495
613
decrypted_buffer_size = pgp_packet_decrypt(buffer,
496
614
buffer_length,
497
615
&decrypted_buffer,
498
certdir);
616
keydir);
499
617
if (decrypted_buffer_size >= 0){
618
written = 0;
500
619
while(written < (size_t) decrypted_buffer_size){
501
620
ret = (int)fwrite (decrypted_buffer + written, 1,
502
621
(size_t)decrypted_buffer_size - written,
515
634
} else {
516
635
retval = -1;
517
636
}
518
}
519
520
//shutdown procedure
521
522
if(debug){
523
fprintf(stderr, "Closing TLS session\n");
524
}
525
637
} else {
638
retval = -1;
639
}
640
641
/* Shutdown procedure */
642
643
mandos_end:
526
644
free(buffer);
527
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
528
exit:
529
645
close(tcp_sd);
530
gnutls_deinit (es.session);
531
gnutls_certificate_free_credentials (es.cred);
532
gnutls_global_deinit ();
646
gnutls_deinit (session);
533
647
return retval;
534
648
}
535
649
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 */
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);
555
666
556
667
/* Called whenever a service has been resolved successfully or
557
668
timed out */
559
670
switch (event) {
560
671
default:
561
672
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)));
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)));
565
676
break;
566
677
567
678
case AVAHI_RESOLVER_FOUND:
569
680
char ip[AVAHI_ADDRESS_STR_MAX];
570
681
avahi_address_snprint(ip, sizeof(ip), address);
571
682
if(debug){
572
fprintf(stderr, "Mandos server \"%s\" found on %s (%s) on"
573
" 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);
574
686
}
575
int ret = start_mandos_communication(ip, port, interface);
687
int ret = start_mandos_communication(ip, port, interface, mc);
576
688
if (ret == 0){
577
exit(EXIT_SUCCESS);
689
avahi_simple_poll_quit(mc->simple_poll);
578
690
}
579
691
}
580
692
}
581
693
avahi_s_service_resolver_free(r);
582
694
}
583
695
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;
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");
630
742
}
743
break;
744
}
631
745
}
632
746
633
747
/* Combines file name and path and returns the malloced new
634
748
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){
749
static char *combinepath(const char *first, const char *second){
750
char *tmp;
751
int ret = asprintf(&tmp, "%s/%s", first, second);
752
if(ret < 0){
640
753
return NULL;
641
754
}
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
755
return tmp;
651
756
}
652
757
653
758
654
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
655
AvahiServerConfig config;
759
int main(int argc, char *argv[]){
656
760
AvahiSServiceBrowser *sb = NULL;
657
761
int error;
658
762
int ret;
659
int returncode = EXIT_SUCCESS;
763
int exitcode = EXIT_SUCCESS;
660
764
const char *interface = "eth0";
661
765
struct ifreq network;
662
766
int sd;
767
uid_t uid;
768
gid_t gid;
663
769
char *connect_to = NULL;
664
770
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;
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");
719
934
}
720
935
721
936
if_index = (AvahiIfIndex) if_nametoindex(interface);
730
945
char *address = strrchr(connect_to, ':');
731
946
if(address == NULL){
732
947
fprintf(stderr, "No colon in address\n");
733
exit(EXIT_FAILURE);
948
exitcode = EXIT_FAILURE;
949
goto end;
734
950
}
735
951
errno = 0;
736
952
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
737
953
if(errno){
738
954
perror("Bad port number");
739
exit(EXIT_FAILURE);
955
exitcode = EXIT_FAILURE;
956
goto end;
740
957
}
741
958
*address = '\0';
742
959
address = connect_to;
743
ret = start_mandos_communication(address, port, if_index);
960
ret = start_mandos_communication(address, port, if_index, &mc);
744
961
if(ret < 0){
745
exit(EXIT_FAILURE);
962
exitcode = EXIT_FAILURE;
746
963
} 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);
964
exitcode = EXIT_SUCCESS;
965
}
966
goto end;
967
}
775
968
776
969
if (not debug){
777
970
avahi_set_log_function(empty_log);
778
971
}
779
972
780
/* Initialize the psuedo-RNG */
973
/* Initialize the pseudo-RNG for Avahi */
781
974
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",
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",
807
1006
avahi_strerror(error));
808
returncode = EXIT_FAILURE;
809
goto exit;
1007
exitcode = EXIT_FAILURE;
1008
goto end;
810
1009
}
811
1010
812
/* Create the service browser */
813
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,
814
1013
AVAHI_PROTO_INET6,
815
1014
"_mandos._tcp", NULL, 0,
816
browse_callback, server);
817
if (!sb) {
1015
browse_callback, &mc);
1016
if (sb == NULL) {
818
1017
fprintf(stderr, "Failed to create service browser: %s\n",
819
avahi_strerror(avahi_server_errno(server)));
820
returncode = EXIT_FAILURE;
821
goto exit;
1018
avahi_strerror(avahi_server_errno(mc.server)));
1019
exitcode = EXIT_FAILURE;
1020
goto end;
822
1021
}
823
1022
824
1023
/* Run the main loop */
825
1024
826
1025
if (debug){
827
fprintf(stderr, "Starting avahi loop search\n");
1026
fprintf(stderr, "Starting Avahi loop search\n");
828
1027
}
829
1028
830
avahi_simple_poll_loop(simple_poll);
831
832
exit:
833
1029
avahi_simple_poll_loop(mc.simple_poll);
1030
1031
end:
1032
834
1033
if (debug){
835
1034
fprintf(stderr, "%s exiting\n", argv[0]);
836
1035
}
837
1036
838
1037
/* Cleanup things */
839
if (sb)
1038
if (sb != NULL)
840
1039
avahi_s_service_browser_free(sb);
841
1040
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);
849
850
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;
851
1055
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0