To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to plugins.d/mandosclient.c
- browse files at revision 21
- compare with another revision
- download diff
- download tarball
- view history from revision 21
- Committer: Teddy Hogeborn
- Date: 2008-07-21 15:34:44 UTC
- Revision ID: teddy@fukt.bsnet.se-20080721153444-lugbjkj1oq65ugq3
* Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and
$(LANGUAGE).
(WARN, DEBUG, COVERAGE, LANGUAGE): New.
(LDFLAGS): New; use $(COVERAGE)
* plugbasedclient.c: Added copyright header.
(process.buffer_size, process.buffer_length): Changed to "size_t".
(main): Cast arguments to malloc and realloc. Detect read errors
from processes.
* mandosclient.c: Added copyright header.
(interface): Moved to inside "main".
(gpg_packet_decrypt): Renamed to "pgp_packet_decrypt"; all callers
changed. Changed "new_packet_capacity" and
"new_packet_length" to be ssize_t. Cast
arguments to realloc.
(debuggnutls): Attribute "level" argument as unused.
(empty_log): Attribute "level" and "txt" arguments as unused.
(start_mandos_communication): New argument "if_index". Bug fix:
check ret, no tcp_sd, for errors from
setsockopt. Use "if_index" directly
instead of looking up the index. Loop
around fwrite until all data is written.
(resolve_callback): Attribute "txt", and "flags" as usused. Added
default case to switch. Also show server host
name. Call start_mandos_communication with
"interface".
(browse_callback): Added default case to switch.
(main): Variable "interface" moved here. Cast "srand" argument.
Bug fix: Call avahi_s_service_browser_new with index of
"interface", not "eth0".
* passprompt.c: Added copyright header.
(termination_handler): Attribute "signum" argument as unused.
$(LANGUAGE).
(WARN, DEBUG, COVERAGE, LANGUAGE): New.
(LDFLAGS): New; use $(COVERAGE)
* plugbasedclient.c: Added copyright header.
(process.buffer_size, process.buffer_length): Changed to "size_t".
(main): Cast arguments to malloc and realloc. Detect read errors
from processes.
* mandosclient.c: Added copyright header.
(interface): Moved to inside "main".
(gpg_packet_decrypt): Renamed to "pgp_packet_decrypt"; all callers
changed. Changed "new_packet_capacity" and
"new_packet_length" to be ssize_t. Cast
arguments to realloc.
(debuggnutls): Attribute "level" argument as unused.
(empty_log): Attribute "level" and "txt" arguments as unused.
(start_mandos_communication): New argument "if_index". Bug fix:
check ret, no tcp_sd, for errors from
setsockopt. Use "if_index" directly
instead of looking up the index. Loop
around fwrite until all data is written.
(resolve_callback): Attribute "txt", and "flags" as usused. Added
default case to switch. Also show server host
name. Call start_mandos_communication with
"interface".
(browse_callback): Added default case to switch.
(main): Variable "interface" moved here. Cast "srand" argument.
Bug fix: Call avahi_s_service_browser_new with index of
"interface", not "eth0".
* passprompt.c: Added copyright header.
(termination_handler): Attribute "signum" argument as unused.
- files added:
- ca.pem
- files removed:
- mandos-client.xml
- files renamed:
- clients.conf => mandos-clients.conf
- mandos-client.c => plugbasedclient.c
- plugins.d/password-request.c => plugins.d/mandosclient.c
- plugins.d/password-prompt.c => plugins.d/passprompt.c
- mandos => server.py
- files modified:
- Makefile
added
removed
plugins.d/mandosclient.c
8
8
* includes the following functions: "resolve_callback",
9
9
* "browse_callback", and parts of "main".
10
10
*
11
* Everything else is
12
* Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
11
* Everything else is Copyright © 2007-2008 Teddy Hogeborn and Björn
12
* Påhlsson.
13
13
*
14
14
* This program is free software: you can redistribute it and/or
15
15
* modify it under the terms of the GNU General Public License as
25
25
* along with this program. If not, see
26
26
* <http://www.gnu.org/licenses/>.
27
27
*
28
* Contact the authors at <mandos@fukt.bsnet.se>.
28
* Contact the authors at <https://www.fukt.bsnet.se/~belorn/> and
29
* <https://www.fukt.bsnet.se/~teddy/>.
29
30
*/
30
31
31
/* Needed by GPGME, specifically gpgme_data_seek() */
32
#define _FORTIFY_SOURCE 2
33
32
34
#define _LARGEFILE_SOURCE
33
35
#define _FILE_OFFSET_BITS 64
34
36
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
36
37
#include <stdio.h> /* fprintf(), stderr, fwrite(), stdout,
38
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(), memcpy(), strcpy() */
46
#include <sys/ioctl.h> /* ioctl */
47
#include <net/if.h> /* ifreq, SIOCGIFFLAGS, SIOCSIFFLAGS,
48
IFF_UP */
49
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
50
sockaddr_in6, PF_INET6,
51
SOCK_STREAM, INET6_ADDRSTRLEN,
52
uid_t, gid_t */
53
#include <inttypes.h> /* PRIu16 */
54
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
55
struct in6_addr, inet_pton(),
56
connect() */
57
#include <assert.h> /* assert() */
58
#include <errno.h> /* perror(), errno */
59
#include <time.h> /* time() */
60
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
61
SIOCSIFFLAGS, if_indextoname(),
62
if_nametoindex(), IF_NAMESIZE */
63
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
64
getuid(), getgid(), setuid(),
65
setgid() */
66
#include <netinet/in.h>
67
#include <arpa/inet.h> /* inet_pton(), htons */
68
#include <iso646.h> /* not, and */
69
#include <argp.h> /* struct argp_option, error_t, struct
70
argp_state, struct argp,
71
argp_parse(), ARGP_KEY_ARG,
72
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
73
74
/* Avahi */
75
/* All Avahi types, constants and functions
76
Avahi*, avahi_*,
77
AVAHI_* */
37
#include <stdio.h>
38
#include <assert.h>
39
#include <stdlib.h>
40
#include <time.h>
41
#include <net/if.h> /* if_nametoindex */
42
78
43
#include <avahi-core/core.h>
79
44
#include <avahi-core/lookup.h>
80
45
#include <avahi-core/log.h>
82
47
#include <avahi-common/malloc.h>
83
48
#include <avahi-common/error.h>
84
49
85
/* GnuTLS */
86
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and functions
87
gnutls_*
88
init_gnutls_session(),
89
GNUTLS_* */
90
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
91
GNUTLS_OPENPGP_FMT_BASE64 */
92
93
/* GPGME */
94
#include <gpgme.h> /* All GPGME types, constants and functions
95
gpgme_*
96
GPGME_PROTOCOL_OpenPGP,
97
GPG_ERR_NO_* */
98
50
//mandos client part
51
#include <sys/types.h> /* socket(), setsockopt(),
52
inet_pton() */
53
#include <sys/socket.h> /* socket(), setsockopt(),
54
struct sockaddr_in6,
55
struct in6_addr, inet_pton() */
56
#include <gnutls/gnutls.h> /* All GnuTLS stuff */
57
#include <gnutls/openpgp.h> /* GnuTLS with openpgp stuff */
58
59
#include <unistd.h> /* close() */
60
#include <netinet/in.h>
61
#include <stdbool.h> /* true */
62
#include <string.h> /* memset */
63
#include <arpa/inet.h> /* inet_pton() */
64
#include <iso646.h> /* not */
65
66
// gpgme
67
#include <errno.h> /* perror() */
68
#include <gpgme.h>
69
70
// getopt long
71
#include <getopt.h>
72
73
#ifndef CERT_ROOT
74
#define CERT_ROOT "/conf/conf.d/cryptkeyreq/"
75
#endif
76
#define CERTFILE CERT_ROOT "openpgp-client.txt"
77
#define KEYFILE CERT_ROOT "openpgp-client-key.txt"
99
78
#define BUFFER_SIZE 256
79
#define DH_BITS 1024
100
80
101
81
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>";
106
82
107
/* Used for passing in values through the Avahi callback functions */
108
83
typedef struct {
109
AvahiSimplePoll *simple_poll;
110
AvahiServer *server;
84
gnutls_session_t session;
111
85
gnutls_certificate_credentials_t cred;
112
unsigned int dh_bits;
113
86
gnutls_dh_params_t dh_params;
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){
87
} encrypted_session;
88
89
90
ssize_t pgp_packet_decrypt (char *packet, size_t packet_size,
91
char **new_packet, const char *homedir){
142
92
gpgme_data_t dh_crypto, dh_plain;
143
93
gpgme_ctx_t ctx;
144
94
gpgme_error_t rc;
145
95
ssize_t ret;
146
size_t plaintext_capacity = 0;
147
ssize_t plaintext_length = 0;
96
ssize_t new_packet_capacity = 0;
97
ssize_t new_packet_length = 0;
148
98
gpgme_engine_info_t engine_info;
149
99
150
100
if (debug){
151
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
101
fprintf(stderr, "Trying to decrypt OpenPGP packet\n");
152
102
}
153
103
154
104
/* Init GPGME */
155
105
gpgme_check_version(NULL);
156
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
157
if (rc != GPG_ERR_NO_ERROR){
158
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
159
gpgme_strsource(rc), gpgme_strerror(rc));
160
return -1;
161
}
106
gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
162
107
163
/* Set GPGME home directory for the OpenPGP engine only */
108
/* Set GPGME home directory */
164
109
rc = gpgme_get_engine_info (&engine_info);
165
110
if (rc != GPG_ERR_NO_ERROR){
166
111
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
176
121
engine_info = engine_info->next;
177
122
}
178
123
if(engine_info == NULL){
179
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
124
fprintf(stderr, "Could not set home dir to %s\n", homedir);
180
125
return -1;
181
126
}
182
127
183
/* Create new GPGME data buffer from memory cryptotext */
184
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
185
0);
128
/* Create new GPGME data buffer from packet buffer */
129
rc = gpgme_data_new_from_mem(&dh_crypto, packet, packet_size, 0);
186
130
if (rc != GPG_ERR_NO_ERROR){
187
131
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
188
132
gpgme_strsource(rc), gpgme_strerror(rc));
194
138
if (rc != GPG_ERR_NO_ERROR){
195
139
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
196
140
gpgme_strsource(rc), gpgme_strerror(rc));
197
gpgme_data_release(dh_crypto);
198
141
return -1;
199
142
}
200
143
203
146
if (rc != GPG_ERR_NO_ERROR){
204
147
fprintf(stderr, "bad gpgme_new: %s: %s\n",
205
148
gpgme_strsource(rc), gpgme_strerror(rc));
206
plaintext_length = -1;
207
goto decrypt_end;
149
return -1;
208
150
}
209
151
210
/* Decrypt data from the cryptotext data buffer to the plaintext
211
data buffer */
152
/* Decrypt data from the FILE pointer to the plaintext data
153
buffer */
212
154
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
213
155
if (rc != GPG_ERR_NO_ERROR){
214
156
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
215
157
gpgme_strsource(rc), gpgme_strerror(rc));
216
plaintext_length = -1;
217
goto decrypt_end;
158
return -1;
218
159
}
219
160
220
161
if(debug){
221
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
162
fprintf(stderr, "Decryption of OpenPGP packet succeeded\n");
222
163
}
223
164
224
165
if (debug){
225
166
gpgme_decrypt_result_t result;
226
167
result = gpgme_op_decrypt_result(ctx);
229
170
} else {
230
171
fprintf(stderr, "Unsupported algorithm: %s\n",
231
172
result->unsupported_algorithm);
232
fprintf(stderr, "Wrong key usage: %u\n",
173
fprintf(stderr, "Wrong key usage: %d\n",
233
174
result->wrong_key_usage);
234
175
if(result->file_name != NULL){
235
176
fprintf(stderr, "File name: %s\n", result->file_name);
250
191
}
251
192
}
252
193
194
/* Delete the GPGME FILE pointer cryptotext data buffer */
195
gpgme_data_release(dh_crypto);
196
253
197
/* Seek back to the beginning of the GPGME plaintext data buffer */
254
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
255
perror("pgpme_data_seek");
256
plaintext_length = -1;
257
goto decrypt_end;
258
}
259
260
*plaintext = NULL;
198
gpgme_data_seek(dh_plain, 0, SEEK_SET);
199
200
*new_packet = 0;
261
201
while(true){
262
plaintext_capacity = adjustbuffer(plaintext,
263
(size_t)plaintext_length,
264
plaintext_capacity);
265
if (plaintext_capacity == 0){
266
perror("adjustbuffer");
267
plaintext_length = -1;
268
goto decrypt_end;
202
if (new_packet_length + BUFFER_SIZE > new_packet_capacity){
203
*new_packet = realloc(*new_packet,
204
(unsigned int)new_packet_capacity
205
+ BUFFER_SIZE);
206
if (*new_packet == NULL){
207
perror("realloc");
208
return -1;
209
}
210
new_packet_capacity += BUFFER_SIZE;
269
211
}
270
212
271
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
213
ret = gpgme_data_read(dh_plain, *new_packet + new_packet_length,
272
214
BUFFER_SIZE);
273
215
/* Print the data, if any */
274
216
if (ret == 0){
275
/* EOF */
276
217
break;
277
218
}
278
219
if(ret < 0){
279
220
perror("gpgme_data_read");
280
plaintext_length = -1;
281
goto decrypt_end;
221
return -1;
282
222
}
283
plaintext_length += ret;
223
new_packet_length += ret;
284
224
}
285
225
286
if(debug){
287
fprintf(stderr, "Decrypted password is: ");
288
for(ssize_t i = 0; i < plaintext_length; i++){
289
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
290
}
291
fprintf(stderr, "\n");
292
}
293
294
decrypt_end:
295
296
/* Delete the GPGME cryptotext data buffer */
297
gpgme_data_release(dh_crypto);
226
/* FIXME: check characters before printing to screen so to not print
227
terminal control characters */
228
/* if(debug){ */
229
/* fprintf(stderr, "decrypted password is: "); */
230
/* fwrite(*new_packet, 1, new_packet_length, stderr); */
231
/* fprintf(stderr, "\n"); */
232
/* } */
298
233
299
234
/* Delete the GPGME plaintext data buffer */
300
235
gpgme_data_release(dh_plain);
301
return plaintext_length;
236
return new_packet_length;
302
237
}
303
238
304
239
static const char * safer_gnutls_strerror (int value) {
308
243
return ret;
309
244
}
310
245
311
/* GnuTLS log function callback */
312
static void debuggnutls(__attribute__((unused)) int level,
313
const char* string){
314
fprintf(stderr, "GnuTLS: %s", string);
246
void debuggnutls(__attribute__((unused)) int level,
247
const char* string){
248
fprintf(stderr, "%s", string);
315
249
}
316
250
317
static int init_gnutls_global(mandos_context *mc,
318
const char *pubkeyfile,
319
const char *seckeyfile){
251
int initgnutls(encrypted_session *es){
252
const char *err;
320
253
int ret;
321
254
322
255
if(debug){
323
256
fprintf(stderr, "Initializing GnuTLS\n");
324
257
}
325
258
326
ret = gnutls_global_init();
327
if (ret != GNUTLS_E_SUCCESS) {
328
fprintf (stderr, "GnuTLS global_init: %s\n",
329
safer_gnutls_strerror(ret));
259
if ((ret = gnutls_global_init ())
260
!= GNUTLS_E_SUCCESS) {
261
fprintf (stderr, "global_init: %s\n", safer_gnutls_strerror(ret));
330
262
return -1;
331
263
}
332
264
333
265
if (debug){
334
/* "Use a log level over 10 to enable all debugging options."
335
* - GnuTLS manual
336
*/
337
266
gnutls_global_set_log_level(11);
338
267
gnutls_global_set_log_function(debuggnutls);
339
268
}
340
269
341
/* OpenPGP credentials */
342
gnutls_certificate_allocate_credentials(&mc->cred);
343
if (ret != GNUTLS_E_SUCCESS){
344
fprintf (stderr, "GnuTLS memory error: %s\n",
270
/* openpgp credentials */
271
if ((ret = gnutls_certificate_allocate_credentials (&es->cred))
272
!= GNUTLS_E_SUCCESS) {
273
fprintf (stderr, "memory error: %s\n",
345
274
safer_gnutls_strerror(ret));
346
gnutls_global_deinit ();
347
275
return -1;
348
276
}
349
277
350
278
if(debug){
351
279
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
352
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
353
seckeyfile);
280
" and keyfile %s as GnuTLS credentials\n", CERTFILE,
281
KEYFILE);
354
282
}
355
283
356
284
ret = gnutls_certificate_set_openpgp_key_file
357
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
285
(es->cred, CERTFILE, KEYFILE, GNUTLS_OPENPGP_FMT_BASE64);
358
286
if (ret != GNUTLS_E_SUCCESS) {
359
fprintf(stderr,
360
"Error[%d] while reading the OpenPGP key pair ('%s',"
361
" '%s')\n", ret, pubkeyfile, seckeyfile);
362
fprintf(stdout, "The GnuTLS error is: %s\n",
287
fprintf
288
(stderr, "Error[%d] while reading the OpenPGP key pair ('%s',"
289
" '%s')\n",
290
ret, CERTFILE, KEYFILE);
291
fprintf(stdout, "The Error is: %s\n",
363
292
safer_gnutls_strerror(ret));
364
goto globalfail;
365
}
366
367
/* GnuTLS server initialization */
368
ret = gnutls_dh_params_init(&mc->dh_params);
369
if (ret != GNUTLS_E_SUCCESS) {
370
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
371
" %s\n", safer_gnutls_strerror(ret));
372
goto globalfail;
373
}
374
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
375
if (ret != GNUTLS_E_SUCCESS) {
376
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
377
safer_gnutls_strerror(ret));
378
goto globalfail;
379
}
380
381
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
382
383
return 0;
384
385
globalfail:
386
387
gnutls_certificate_free_credentials(mc->cred);
388
gnutls_global_deinit();
389
return -1;
390
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){
293
return -1;
294
}
295
296
//GnuTLS server initialization
297
if ((ret = gnutls_dh_params_init (&es->dh_params))
298
!= GNUTLS_E_SUCCESS) {
299
fprintf (stderr, "Error in dh parameter initialization: %s\n",
300
safer_gnutls_strerror(ret));
301
return -1;
302
}
303
304
if ((ret = gnutls_dh_params_generate2 (es->dh_params, DH_BITS))
305
!= GNUTLS_E_SUCCESS) {
306
fprintf (stderr, "Error in prime generation: %s\n",
307
safer_gnutls_strerror(ret));
308
return -1;
309
}
310
311
gnutls_certificate_set_dh_params (es->cred, es->dh_params);
312
313
// GnuTLS session creation
314
if ((ret = gnutls_init (&es->session, GNUTLS_SERVER))
315
!= GNUTLS_E_SUCCESS){
399
316
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
400
317
safer_gnutls_strerror(ret));
401
318
}
402
319
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
}
320
if ((ret = gnutls_priority_set_direct (es->session, "NORMAL", &err))
321
!= GNUTLS_E_SUCCESS) {
322
fprintf(stderr, "Syntax error at: %s\n", err);
323
fprintf(stderr, "GnuTLS error: %s\n",
324
safer_gnutls_strerror(ret));
325
return -1;
413
326
}
414
327
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",
328
if ((ret = gnutls_credentials_set
329
(es->session, GNUTLS_CRD_CERTIFICATE, es->cred))
330
!= GNUTLS_E_SUCCESS) {
331
fprintf(stderr, "Error setting a credentials set: %s\n",
419
332
safer_gnutls_strerror(ret));
420
gnutls_deinit (*session);
421
333
return -1;
422
334
}
423
335
424
336
/* ignore client certificate if any. */
425
gnutls_certificate_server_set_request (*session,
337
gnutls_certificate_server_set_request (es->session,
426
338
GNUTLS_CERT_IGNORE);
427
339
428
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
340
gnutls_dh_set_prime_bits (es->session, DH_BITS);
429
341
430
342
return 0;
431
343
}
432
344
433
/* Avahi log function callback */
434
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
435
__attribute__((unused)) const char *txt){}
345
void empty_log(__attribute__((unused)) AvahiLogLevel level,
346
__attribute__((unused)) const char *txt){}
436
347
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){
348
int start_mandos_communication(char *ip, uint16_t port,
349
unsigned int if_index){
441
350
int ret, tcp_sd;
442
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
351
struct sockaddr_in6 to;
352
encrypted_session es;
443
353
char *buffer = NULL;
444
354
char *decrypted_buffer;
445
355
size_t buffer_length = 0;
446
356
size_t buffer_capacity = 0;
447
357
ssize_t decrypted_buffer_size;
448
size_t written;
449
358
int retval = 0;
450
359
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
}
457
360
458
361
if(debug){
459
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
460
"\n", ip, port);
362
fprintf(stderr, "Setting up a tcp connection to %s\n", ip);
461
363
}
462
364
463
365
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
465
367
perror("socket");
466
368
return -1;
467
369
}
468
469
if(debug){
470
if(if_indextoname((unsigned int)if_index, interface) == NULL){
370
371
if(if_indextoname(if_index, interface) == NULL){
372
if(debug){
471
373
perror("if_indextoname");
472
return -1;
473
374
}
375
return -1;
376
}
377
378
if(debug){
474
379
fprintf(stderr, "Binding to interface %s\n", interface);
475
380
}
476
381
477
memset(&to,0,sizeof(to)); /* Spurious warning */
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);
382
ret = setsockopt(tcp_sd, SOL_SOCKET, SO_BINDTODEVICE, interface, 5);
383
if(ret < 0) {
384
perror("setsockopt bindtodevice");
385
return -1;
386
}
387
388
memset(&to,0,sizeof(to));
389
to.sin6_family = AF_INET6;
390
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
482
391
if (ret < 0 ){
483
392
perror("inet_pton");
484
393
return -1;
485
}
394
}
486
395
if(ret == 0){
487
396
fprintf(stderr, "Bad address: %s\n", ip);
488
397
return -1;
489
398
}
490
to.in6.sin6_port = htons(port); /* Spurious warning */
399
/* Spurious warnings for the next line, see for instance
400
<http://bugs.debian.org/488884> */
401
to.sin6_port = htons(port);
491
402
492
to.in6.sin6_scope_id = (uint32_t)if_index;
403
to.sin6_scope_id = (uint32_t)if_index;
493
404
494
405
if(debug){
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
}
406
fprintf(stderr, "Connection to: %s\n", ip);
506
407
}
507
408
508
ret = connect(tcp_sd, &to.in, sizeof(to));
409
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
509
410
if (ret < 0){
510
411
perror("connect");
511
412
return -1;
512
413
}
513
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
}
414
415
ret = initgnutls (&es);
416
if (ret != 0){
417
retval = -1;
418
return -1;
536
419
}
537
420
421
gnutls_transport_set_ptr (es.session,
422
(gnutls_transport_ptr_t) tcp_sd);
423
538
424
if(debug){
539
425
fprintf(stderr, "Establishing TLS session with %s\n", ip);
540
426
}
541
427
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);
428
ret = gnutls_handshake (es.session);
547
429
548
430
if (ret != GNUTLS_E_SUCCESS){
549
if(debug){
550
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
551
gnutls_perror (ret);
552
}
431
fprintf(stderr, "\n*** Handshake failed ***\n");
432
gnutls_perror (ret);
553
433
retval = -1;
554
goto mandos_end;
434
goto exit;
555
435
}
556
436
557
/* Read OpenPGP packet that contains the wanted password */
437
//Retrieve OpenPGP packet that contains the wanted password
558
438
559
439
if(debug){
560
440
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
562
442
}
563
443
564
444
while(true){
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;
445
if (buffer_length + BUFFER_SIZE > buffer_capacity){
446
buffer = realloc(buffer, buffer_capacity + BUFFER_SIZE);
447
if (buffer == NULL){
448
perror("realloc");
449
goto exit;
450
}
451
buffer_capacity += BUFFER_SIZE;
571
452
}
572
453
573
ret = gnutls_record_recv(session, buffer+buffer_length,
574
BUFFER_SIZE);
454
ret = gnutls_record_recv
455
(es.session, buffer+buffer_length, BUFFER_SIZE);
575
456
if (ret == 0){
576
457
break;
577
458
}
581
462
case GNUTLS_E_AGAIN:
582
463
break;
583
464
case GNUTLS_E_REHANDSHAKE:
584
do{
585
ret = gnutls_handshake (session);
586
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
465
ret = gnutls_handshake (es.session);
587
466
if (ret < 0){
588
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
467
fprintf(stderr, "\n*** Handshake failed ***\n");
589
468
gnutls_perror (ret);
590
469
retval = -1;
591
goto mandos_end;
470
goto exit;
592
471
}
593
472
break;
594
473
default:
595
474
fprintf(stderr, "Unknown error while reading data from"
596
" encrypted session with Mandos server\n");
475
" encrypted session with mandos server\n");
597
476
retval = -1;
598
gnutls_bye (session, GNUTLS_SHUT_RDWR);
599
goto mandos_end;
477
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
478
goto exit;
600
479
}
601
480
} else {
602
481
buffer_length += (size_t) ret;
603
482
}
604
483
}
605
484
606
if(debug){
607
fprintf(stderr, "Closing TLS session\n");
608
}
609
610
gnutls_bye (session, GNUTLS_SHUT_RDWR);
611
612
485
if (buffer_length > 0){
613
486
decrypted_buffer_size = pgp_packet_decrypt(buffer,
614
487
buffer_length,
615
488
&decrypted_buffer,
616
keydir);
489
CERT_ROOT);
617
490
if (decrypted_buffer_size >= 0){
618
written = 0;
619
while(written < (size_t) decrypted_buffer_size){
620
ret = (int)fwrite (decrypted_buffer + written, 1,
621
(size_t)decrypted_buffer_size - written,
622
stdout);
491
while(decrypted_buffer_size > 0){
492
ret = fwrite (decrypted_buffer, 1, (size_t)decrypted_buffer_size,
493
stdout);
623
494
if(ret == 0 and ferror(stdout)){
624
495
if(debug){
625
496
fprintf(stderr, "Error writing encrypted data: %s\n",
628
499
retval = -1;
629
500
break;
630
501
}
631
written += (size_t)ret;
502
decrypted_buffer += ret;
503
decrypted_buffer_size -= ret;
632
504
}
633
505
free(decrypted_buffer);
634
506
} else {
635
507
retval = -1;
636
508
}
637
509
}
638
639
/* Shutdown procedure */
640
641
mandos_end:
510
511
//shutdown procedure
512
513
if(debug){
514
fprintf(stderr, "Closing TLS session\n");
515
}
516
642
517
free(buffer);
518
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
519
exit:
643
520
close(tcp_sd);
644
gnutls_deinit (session);
521
gnutls_deinit (es.session);
522
gnutls_certificate_free_credentials (es.cred);
523
gnutls_global_deinit ();
645
524
return retval;
646
525
}
647
526
648
static void resolve_callback(AvahiSServiceResolver *r,
649
AvahiIfIndex interface,
650
AVAHI_GCC_UNUSED AvahiProtocol protocol,
651
AvahiResolverEvent event,
652
const char *name,
653
const char *type,
654
const char *domain,
655
const char *host_name,
656
const AvahiAddress *address,
657
uint16_t port,
658
AVAHI_GCC_UNUSED AvahiStringList *txt,
659
AVAHI_GCC_UNUSED AvahiLookupResultFlags
660
flags,
661
void* userdata) {
662
mandos_context *mc = userdata;
663
assert(r); /* Spurious warning */
664
527
static AvahiSimplePoll *simple_poll = NULL;
528
static AvahiServer *server = NULL;
529
530
static void resolve_callback(
531
AvahiSServiceResolver *r,
532
AVAHI_GCC_UNUSED AvahiIfIndex interface,
533
AVAHI_GCC_UNUSED AvahiProtocol protocol,
534
AvahiResolverEvent event,
535
const char *name,
536
const char *type,
537
const char *domain,
538
const char *host_name,
539
const AvahiAddress *address,
540
uint16_t port,
541
AVAHI_GCC_UNUSED AvahiStringList *txt,
542
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
543
AVAHI_GCC_UNUSED void* userdata) {
544
545
assert(r);
546
665
547
/* Called whenever a service has been resolved successfully or
666
548
timed out */
667
549
668
550
switch (event) {
669
551
default:
670
552
case AVAHI_RESOLVER_FAILURE:
671
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
672
" of type '%s' in domain '%s': %s\n", name, type, domain,
673
avahi_strerror(avahi_server_errno(mc->server)));
553
fprintf(stderr, "(Resolver) Failed to resolve service '%s' of"
554
" type '%s' in domain '%s': %s\n", name, type, domain,
555
avahi_strerror(avahi_server_errno(server)));
674
556
break;
675
557
676
558
case AVAHI_RESOLVER_FOUND:
677
559
{
678
560
char ip[AVAHI_ADDRESS_STR_MAX];
679
561
avahi_address_snprint(ip, sizeof(ip), address);
680
562
if(debug){
681
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
682
PRIu16 ") on port %d\n", name, host_name, ip,
683
interface, port);
563
fprintf(stderr, "Mandos server found on %s (%s) on port %d\n",
564
host_name, ip, port);
684
565
}
685
int ret = start_mandos_communication(ip, port, interface, mc);
566
int ret = start_mandos_communication(ip, port,
567
(unsigned int)
568
interface);
686
569
if (ret == 0){
687
570
exit(EXIT_SUCCESS);
571
} else {
572
exit(EXIT_FAILURE);
688
573
}
689
574
}
690
575
}
691
576
avahi_s_service_resolver_free(r);
692
577
}
693
578
694
static void browse_callback( AvahiSServiceBrowser *b,
695
AvahiIfIndex interface,
696
AvahiProtocol protocol,
697
AvahiBrowserEvent event,
698
const char *name,
699
const char *type,
700
const char *domain,
701
AVAHI_GCC_UNUSED AvahiLookupResultFlags
702
flags,
703
void* userdata) {
704
mandos_context *mc = userdata;
705
assert(b); /* Spurious warning */
706
707
/* Called whenever a new services becomes available on the LAN or
708
is removed from the LAN */
709
710
switch (event) {
711
default:
712
case AVAHI_BROWSER_FAILURE:
713
714
fprintf(stderr, "(Avahi browser) %s\n",
715
avahi_strerror(avahi_server_errno(mc->server)));
716
avahi_simple_poll_quit(mc->simple_poll);
717
return;
718
719
case AVAHI_BROWSER_NEW:
720
/* We ignore the returned Avahi resolver object. In the callback
721
function we free it. If the Avahi server is terminated before
722
the callback function is called the Avahi server will free the
723
resolver for us. */
724
725
if (!(avahi_s_service_resolver_new(mc->server, interface,
726
protocol, name, type, domain,
727
AVAHI_PROTO_INET6, 0,
728
resolve_callback, mc)))
729
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
730
name, avahi_strerror(avahi_server_errno(mc->server)));
731
break;
732
733
case AVAHI_BROWSER_REMOVE:
734
break;
735
736
case AVAHI_BROWSER_ALL_FOR_NOW:
737
case AVAHI_BROWSER_CACHE_EXHAUSTED:
738
if(debug){
739
fprintf(stderr, "No Mandos server found, still searching...\n");
579
static void browse_callback(
580
AvahiSServiceBrowser *b,
581
AvahiIfIndex interface,
582
AvahiProtocol protocol,
583
AvahiBrowserEvent event,
584
const char *name,
585
const char *type,
586
const char *domain,
587
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
588
void* userdata) {
589
590
AvahiServer *s = userdata;
591
assert(b);
592
593
/* Called whenever a new services becomes available on the LAN or
594
is removed from the LAN */
595
596
switch (event) {
597
default:
598
case AVAHI_BROWSER_FAILURE:
599
600
fprintf(stderr, "(Browser) %s\n",
601
avahi_strerror(avahi_server_errno(server)));
602
avahi_simple_poll_quit(simple_poll);
603
return;
604
605
case AVAHI_BROWSER_NEW:
606
/* We ignore the returned resolver object. In the callback
607
function we free it. If the server is terminated before
608
the callback function is called the server will free
609
the resolver for us. */
610
611
if (!(avahi_s_service_resolver_new(s, interface, protocol, name,
612
type, domain,
613
AVAHI_PROTO_INET6, 0,
614
resolve_callback, s)))
615
fprintf(stderr, "Failed to resolve service '%s': %s\n", name,
616
avahi_strerror(avahi_server_errno(s)));
617
break;
618
619
case AVAHI_BROWSER_REMOVE:
620
break;
621
622
case AVAHI_BROWSER_ALL_FOR_NOW:
623
case AVAHI_BROWSER_CACHE_EXHAUSTED:
624
break;
740
625
}
741
break;
742
}
743
}
744
745
/* Combines file name and path and returns the malloced new
746
string. some sane checks could/should be added */
747
static const char *combinepath(const char *first, const char *second){
748
size_t f_len = strlen(first);
749
size_t s_len = strlen(second);
750
char *tmp = malloc(f_len + s_len + 2);
751
if (tmp == NULL){
752
return NULL;
753
}
754
if(f_len > 0){
755
memcpy(tmp, first, f_len); /* Spurious warning */
756
}
757
tmp[f_len] = '/';
758
if(s_len > 0){
759
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
760
}
761
tmp[f_len + 1 + s_len] = '\0';
762
return tmp;
763
}
764
765
766
int main(int argc, char *argv[]){
626
}
627
628
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
629
AvahiServerConfig config;
767
630
AvahiSServiceBrowser *sb = NULL;
768
631
int error;
769
632
int ret;
770
int exitcode = EXIT_SUCCESS;
633
int returncode = EXIT_SUCCESS;
771
634
const char *interface = "eth0";
772
struct ifreq network;
773
int sd;
774
uid_t uid;
775
gid_t gid;
776
char *connect_to = NULL;
777
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
778
const char *pubkeyfile = "pubkey.txt";
779
const char *seckeyfile = "seckey.txt";
780
mandos_context mc = { .simple_poll = NULL, .server = NULL,
781
.dh_bits = 1024, .priority = "SECURE256"};
782
bool gnutls_initalized = false;
783
784
{
785
struct argp_option options[] = {
786
{ .name = "debug", .key = 128,
787
.doc = "Debug mode", .group = 3 },
788
{ .name = "connect", .key = 'c',
789
.arg = "IP",
790
.doc = "Connect directly to a sepcified mandos server",
791
.group = 1 },
792
{ .name = "interface", .key = 'i',
793
.arg = "INTERFACE",
794
.doc = "Interface that Avahi will conntect through",
795
.group = 1 },
796
{ .name = "keydir", .key = 'd',
797
.arg = "KEYDIR",
798
.doc = "Directory where the openpgp keyring is",
799
.group = 1 },
800
{ .name = "seckey", .key = 's',
801
.arg = "SECKEY",
802
.doc = "Secret openpgp key for gnutls authentication",
803
.group = 1 },
804
{ .name = "pubkey", .key = 'p',
805
.arg = "PUBKEY",
806
.doc = "Public openpgp key for gnutls authentication",
807
.group = 2 },
808
{ .name = "dh-bits", .key = 129,
809
.arg = "BITS",
810
.doc = "dh-bits to use in gnutls communication",
811
.group = 2 },
812
{ .name = "priority", .key = 130,
813
.arg = "PRIORITY",
814
.doc = "GNUTLS priority", .group = 1 },
815
{ .name = NULL }
816
};
817
818
819
error_t parse_opt (int key, char *arg,
820
struct argp_state *state) {
821
/* Get the INPUT argument from `argp_parse', which we know is
822
a pointer to our plugin list pointer. */
823
switch (key) {
824
case 128:
825
debug = true;
826
break;
827
case 'c':
828
connect_to = arg;
829
break;
830
case 'i':
831
interface = arg;
832
break;
833
case 'd':
834
keydir = arg;
835
break;
836
case 's':
837
seckeyfile = arg;
838
break;
839
case 'p':
840
pubkeyfile = arg;
841
break;
842
case 129:
843
errno = 0;
844
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
845
if (errno){
846
perror("strtol");
847
exit(EXIT_FAILURE);
848
}
849
break;
850
case 130:
851
mc.priority = arg;
852
break;
853
case ARGP_KEY_ARG:
854
argp_usage (state);
855
break;
856
case ARGP_KEY_END:
857
break;
858
default:
859
return ARGP_ERR_UNKNOWN;
860
}
861
return 0;
862
}
863
864
struct argp argp = { .options = options, .parser = parse_opt,
865
.args_doc = "",
866
.doc = "Mandos client -- Get and decrypt"
867
" passwords from mandos server" };
868
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
869
if (ret == ARGP_ERR_UNKNOWN){
870
fprintf(stderr, "Unkown error while parsing arguments\n");
871
exitcode = EXIT_FAILURE;
872
goto end;
873
}
874
}
875
876
pubkeyfile = combinepath(keydir, pubkeyfile);
877
if (pubkeyfile == NULL){
878
perror("combinepath");
879
exitcode = EXIT_FAILURE;
880
goto end;
881
}
882
883
seckeyfile = combinepath(keydir, seckeyfile);
884
if (seckeyfile == NULL){
885
perror("combinepath");
886
goto end;
887
}
888
889
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
890
if (ret == -1){
891
fprintf(stderr, "init_gnutls_global\n");
892
goto end;
893
} else {
894
gnutls_initalized = true;
895
}
896
897
uid = getuid();
898
gid = getgid();
899
900
ret = setuid(uid);
901
if (ret == -1){
902
perror("setuid");
903
}
904
905
setgid(gid);
906
if (ret == -1){
907
perror("setgid");
908
}
909
910
if_index = (AvahiIfIndex) if_nametoindex(interface);
911
if(if_index == 0){
912
fprintf(stderr, "No such interface: \"%s\"\n", interface);
913
exit(EXIT_FAILURE);
914
}
915
916
if(connect_to != NULL){
917
/* Connect directly, do not use Zeroconf */
918
/* (Mainly meant for debugging) */
919
char *address = strrchr(connect_to, ':');
920
if(address == NULL){
921
fprintf(stderr, "No colon in address\n");
922
exitcode = EXIT_FAILURE;
923
goto end;
924
}
925
errno = 0;
926
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
927
if(errno){
928
perror("Bad port number");
929
exitcode = EXIT_FAILURE;
930
goto end;
931
}
932
*address = '\0';
933
address = connect_to;
934
ret = start_mandos_communication(address, port, if_index, &mc);
935
if(ret < 0){
936
exitcode = EXIT_FAILURE;
937
} else {
938
exitcode = EXIT_SUCCESS;
939
}
940
goto end;
941
}
942
943
/* If the interface is down, bring it up */
944
{
945
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
946
if(sd < 0) {
947
perror("socket");
948
exitcode = EXIT_FAILURE;
949
goto end;
950
}
951
strcpy(network.ifr_name, interface); /* Spurious warning */
952
ret = ioctl(sd, SIOCGIFFLAGS, &network);
953
if(ret == -1){
954
perror("ioctl SIOCGIFFLAGS");
955
exitcode = EXIT_FAILURE;
956
goto end;
957
}
958
if((network.ifr_flags & IFF_UP) == 0){
959
network.ifr_flags |= IFF_UP;
960
ret = ioctl(sd, SIOCSIFFLAGS, &network);
961
if(ret == -1){
962
perror("ioctl SIOCSIFFLAGS");
963
exitcode = EXIT_FAILURE;
964
goto end;
965
}
966
}
967
close(sd);
635
636
while (true){
637
static struct option long_options[] = {
638
{"debug", no_argument, (int *)&debug, 1},
639
{"interface", required_argument, 0, 'i'},
640
{0, 0, 0, 0} };
641
642
int option_index = 0;
643
ret = getopt_long (argc, argv, "i:", long_options,
644
&option_index);
645
646
if (ret == -1){
647
break;
648
}
649
650
switch(ret){
651
case 0:
652
break;
653
case 'i':
654
interface = optarg;
655
break;
656
default:
657
exit(EXIT_FAILURE);
658
}
968
659
}
969
660
970
661
if (not debug){
971
662
avahi_set_log_function(empty_log);
972
663
}
973
664
974
/* Initialize the pseudo-RNG for Avahi */
665
/* Initialize the psuedo-RNG */
975
666
srand((unsigned int) time(NULL));
976
977
/* Allocate main Avahi loop object */
978
mc.simple_poll = avahi_simple_poll_new();
979
if (mc.simple_poll == NULL) {
980
fprintf(stderr, "Avahi: Failed to create simple poll"
981
" object.\n");
982
exitcode = EXIT_FAILURE;
983
goto end;
984
}
985
986
{
987
AvahiServerConfig config;
988
/* Do not publish any local Zeroconf records */
989
avahi_server_config_init(&config);
990
config.publish_hinfo = 0;
991
config.publish_addresses = 0;
992
config.publish_workstation = 0;
993
config.publish_domain = 0;
994
995
/* Allocate a new server */
996
mc.server = avahi_server_new(avahi_simple_poll_get
997
(mc.simple_poll), &config, NULL,
998
NULL, &error);
999
1000
/* Free the Avahi configuration data */
1001
avahi_server_config_free(&config);
1002
}
1003
1004
/* Check if creating the Avahi server object succeeded */
1005
if (mc.server == NULL) {
1006
fprintf(stderr, "Failed to create Avahi server: %s\n",
667
668
/* Allocate main loop object */
669
if (!(simple_poll = avahi_simple_poll_new())) {
670
fprintf(stderr, "Failed to create simple poll object.\n");
671
672
goto exit;
673
}
674
675
/* Do not publish any local records */
676
avahi_server_config_init(&config);
677
config.publish_hinfo = 0;
678
config.publish_addresses = 0;
679
config.publish_workstation = 0;
680
config.publish_domain = 0;
681
682
/* Allocate a new server */
683
server = avahi_server_new(avahi_simple_poll_get(simple_poll),
684
&config, NULL, NULL, &error);
685
686
/* Free the configuration data */
687
avahi_server_config_free(&config);
688
689
/* Check if creating the server object succeeded */
690
if (!server) {
691
fprintf(stderr, "Failed to create server: %s\n",
1007
692
avahi_strerror(error));
1008
exitcode = EXIT_FAILURE;
1009
goto end;
693
returncode = EXIT_FAILURE;
694
goto exit;
1010
695
}
1011
696
1012
/* Create the Avahi service browser */
1013
sb = avahi_s_service_browser_new(mc.server, if_index,
697
/* Create the service browser */
698
sb = avahi_s_service_browser_new(server,
699
(AvahiIfIndex)
700
if_nametoindex(interface),
1014
701
AVAHI_PROTO_INET6,
1015
702
"_mandos._tcp", NULL, 0,
1016
browse_callback, &mc);
1017
if (sb == NULL) {
703
browse_callback, server);
704
if (!sb) {
1018
705
fprintf(stderr, "Failed to create service browser: %s\n",
1019
avahi_strerror(avahi_server_errno(mc.server)));
1020
exitcode = EXIT_FAILURE;
1021
goto end;
706
avahi_strerror(avahi_server_errno(server)));
707
returncode = EXIT_FAILURE;
708
goto exit;
1022
709
}
1023
710
1024
711
/* Run the main loop */
1025
712
1026
713
if (debug){
1027
fprintf(stderr, "Starting Avahi loop search\n");
714
fprintf(stderr, "Starting avahi loop search\n");
1028
715
}
1029
716
1030
avahi_simple_poll_loop(mc.simple_poll);
717
avahi_simple_poll_loop(simple_poll);
1031
718
1032
end:
719
exit:
1033
720
1034
721
if (debug){
1035
722
fprintf(stderr, "%s exiting\n", argv[0]);
1036
723
}
1037
724
1038
725
/* Cleanup things */
1039
if (sb != NULL)
726
if (sb)
1040
727
avahi_s_service_browser_free(sb);
1041
728
1042
if (mc.server != NULL)
1043
avahi_server_free(mc.server);
1044
1045
if (mc.simple_poll != NULL)
1046
avahi_simple_poll_free(mc.simple_poll);
1047
free(pubkeyfile);
1048
free(seckeyfile);
1049
1050
if (gnutls_initalized){
1051
gnutls_certificate_free_credentials(mc.cred);
1052
gnutls_global_deinit ();
1053
}
1054
1055
return exitcode;
729
if (server)
730
avahi_server_free(server);
731
732
if (simple_poll)
733
avahi_simple_poll_free(simple_poll);
734
735
return returncode;
1056
736
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0