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 24.1.9
- compare with another revision
- download diff
- download tarball
- view history from revision 24.1.9
- Committer: Björn Påhlsson
- Date: 2008-08-02 21:06:29 UTC
- mto: (24.1.154 mandos) (237.4.3 mandos-release)
- mto: This revision was merged to the branch mainline in revision 38.
- Revision ID: belorn@braxen-20080802210629-p9jc5515yufcg4ge
not working midwork...
- files added:
- ca.pem
- files removed:
- .bzrignore
- files renamed:
- plugin-runner.c => plugbasedclient.c
- plugins.d/password-request.c => plugins.d/mandosclient.c
- plugins.d/password-prompt.c => plugins.d/passprompt.c
- mandos.conf => server.conf
- mandos => server.py
- files modified:
- Makefile
added
removed
plugins.d/mandosclient.c
32
32
#define _LARGEFILE_SOURCE
33
33
#define _FILE_OFFSET_BITS 64
34
34
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, open(), opendir(), DIR */
51
#include <sys/stat.h> /* open() */
52
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
53
struct in6_addr, inet_pton(),
54
connect() */
55
#include <fcntl.h> /* open() */
56
#include <dirent.h> /* opendir(), struct dirent, readdir() */
57
#include <inttypes.h> /* PRIu16 */
58
#include <assert.h> /* assert() */
59
#include <errno.h> /* perror(), errno */
60
#include <time.h> /* time() */
61
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
62
SIOCSIFFLAGS, if_indextoname(),
63
if_nametoindex(), IF_NAMESIZE */
64
#include <netinet/in.h>
65
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
66
getuid(), getgid(), setuid(),
67
setgid() */
68
#include <arpa/inet.h> /* inet_pton(), htons */
69
#include <iso646.h> /* not, and */
70
#include <argp.h> /* struct argp_option, error_t, struct
71
argp_state, struct argp,
72
argp_parse(), ARGP_KEY_ARG,
73
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
74
75
/* Avahi */
76
/* All Avahi types, constants and functions
77
Avahi*, avahi_*,
78
AVAHI_* */
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
79
43
#include <avahi-core/core.h>
80
44
#include <avahi-core/lookup.h>
81
45
#include <avahi-core/log.h>
83
47
#include <avahi-common/malloc.h>
84
48
#include <avahi-common/error.h>
85
49
86
/* GnuTLS */
87
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
88
functions:
89
gnutls_*
90
init_gnutls_session(),
91
GNUTLS_* */
92
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
93
GNUTLS_OPENPGP_FMT_BASE64 */
94
95
/* GPGME */
96
#include <gpgme.h> /* All GPGME types, constants and
97
functions:
98
gpgme_*
99
GPGME_PROTOCOL_OpenPGP,
100
GPG_ERR_NO_* */
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>
101
70
102
71
#define BUFFER_SIZE 256
103
104
/*
105
#define PATHDIR "/conf/conf.d/mandos"
106
*/
107
108
#define PATHDIR "/conf/conf.d/mandos"
109
#define SECKEY "seckey.txt"
110
#define PUBKEY "pubkey.txt"
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";
111
77
112
78
bool debug = false;
113
static const char mandos_protocol_version[] = "1";
114
const char *argp_program_version = "password-request 1.0";
115
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
116
79
117
/* Used for passing in values through the Avahi callback functions */
118
80
typedef struct {
119
81
AvahiSimplePoll *simple_poll;
120
82
AvahiServer *server;
121
83
gnutls_certificate_credentials_t cred;
122
84
unsigned int dh_bits;
123
gnutls_dh_params_t dh_params;
124
85
const char *priority;
86
} mandos_context;
87
88
static ssize_t pgp_packet_decrypt (char *packet, size_t packet_size,
89
char **new_packet,
90
const char *homedir){
91
gpgme_data_t dh_crypto, dh_plain;
125
92
gpgme_ctx_t ctx;
126
} mandos_context;
127
128
/*
129
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
130
* "buffer_capacity" is how much is currently allocated,
131
* "buffer_length" is how much is already used.
132
*/
133
size_t adjustbuffer(char **buffer, size_t buffer_length,
134
size_t buffer_capacity){
135
if (buffer_length + BUFFER_SIZE > buffer_capacity){
136
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
137
if (buffer == NULL){
138
return 0;
139
}
140
buffer_capacity += BUFFER_SIZE;
141
}
142
return buffer_capacity;
143
}
144
145
/*
146
* Initialize GPGME.
147
*/
148
static bool init_gpgme(mandos_context *mc, const char *seckey,
149
const char *pubkey, const char *tempdir){
150
int ret;
151
93
gpgme_error_t rc;
94
ssize_t ret;
95
ssize_t new_packet_capacity = 0;
96
ssize_t new_packet_length = 0;
152
97
gpgme_engine_info_t engine_info;
153
154
155
/*
156
* Helper function to insert pub and seckey to the enigne keyring.
157
*/
158
bool import_key(const char *filename){
159
int fd;
160
gpgme_data_t pgp_data;
161
162
fd = TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
163
if(fd == -1){
164
perror("open");
165
return false;
166
}
167
168
rc = gpgme_data_new_from_fd(&pgp_data, fd);
169
if (rc != GPG_ERR_NO_ERROR){
170
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
171
gpgme_strsource(rc), gpgme_strerror(rc));
172
return false;
173
}
174
175
rc = gpgme_op_import(mc->ctx, pgp_data);
176
if (rc != GPG_ERR_NO_ERROR){
177
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
178
gpgme_strsource(rc), gpgme_strerror(rc));
179
return false;
180
}
181
182
ret = TEMP_FAILURE_RETRY(close(fd));
183
if(ret == -1){
184
perror("close");
185
}
186
gpgme_data_release(pgp_data);
187
return true;
188
}
189
98
190
99
if (debug){
191
fprintf(stderr, "Initialize gpgme\n");
100
fprintf(stderr, "Trying to decrypt OpenPGP packet\n");
192
101
}
193
102
194
103
/* Init GPGME */
197
106
if (rc != GPG_ERR_NO_ERROR){
198
107
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
199
108
gpgme_strsource(rc), gpgme_strerror(rc));
200
return false;
109
return -1;
201
110
}
202
111
203
/* Set GPGME home directory for the OpenPGP engine only */
112
/* Set GPGME home directory */
204
113
rc = gpgme_get_engine_info (&engine_info);
205
114
if (rc != GPG_ERR_NO_ERROR){
206
115
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
207
116
gpgme_strsource(rc), gpgme_strerror(rc));
208
return false;
117
return -1;
209
118
}
210
119
while(engine_info != NULL){
211
120
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
212
121
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
213
engine_info->file_name, tempdir);
122
engine_info->file_name, homedir);
214
123
break;
215
124
}
216
125
engine_info = engine_info->next;
217
126
}
218
127
if(engine_info == NULL){
219
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
220
return false;
221
}
222
223
/* Create new GPGME "context" */
224
rc = gpgme_new(&(mc->ctx));
225
if (rc != GPG_ERR_NO_ERROR){
226
fprintf(stderr, "bad gpgme_new: %s: %s\n",
227
gpgme_strsource(rc), gpgme_strerror(rc));
228
return false;
229
}
230
231
if (not import_key(pubkey) or not import_key(seckey)){
232
return false;
233
}
234
235
return true;
236
}
237
238
/*
239
* Decrypt OpenPGP data.
240
* Returns -1 on error
241
*/
242
static ssize_t pgp_packet_decrypt (const mandos_context *mc,
243
const char *cryptotext,
244
size_t crypto_size,
245
char **plaintext){
246
gpgme_data_t dh_crypto, dh_plain;
247
gpgme_error_t rc;
248
ssize_t ret;
249
size_t plaintext_capacity = 0;
250
ssize_t plaintext_length = 0;
251
252
if (debug){
253
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
254
}
255
256
/* Create new GPGME data buffer from memory cryptotext */
257
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
258
0);
128
fprintf(stderr, "Could not set home dir to %s\n", homedir);
129
return -1;
130
}
131
132
/* Create new GPGME data buffer from packet buffer */
133
rc = gpgme_data_new_from_mem(&dh_crypto, packet, packet_size, 0);
259
134
if (rc != GPG_ERR_NO_ERROR){
260
135
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
261
136
gpgme_strsource(rc), gpgme_strerror(rc));
267
142
if (rc != GPG_ERR_NO_ERROR){
268
143
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
269
144
gpgme_strsource(rc), gpgme_strerror(rc));
270
gpgme_data_release(dh_crypto);
271
return -1;
272
}
273
274
/* Decrypt data from the cryptotext data buffer to the plaintext
275
data buffer */
276
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
145
return -1;
146
}
147
148
/* Create new GPGME "context" */
149
rc = gpgme_new(&ctx);
150
if (rc != GPG_ERR_NO_ERROR){
151
fprintf(stderr, "bad gpgme_new: %s: %s\n",
152
gpgme_strsource(rc), gpgme_strerror(rc));
153
return -1;
154
}
155
156
/* Decrypt data from the FILE pointer to the plaintext data
157
buffer */
158
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
277
159
if (rc != GPG_ERR_NO_ERROR){
278
160
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
279
161
gpgme_strsource(rc), gpgme_strerror(rc));
280
plaintext_length = -1;
281
if (debug){
282
gpgme_decrypt_result_t result;
283
result = gpgme_op_decrypt_result(mc->ctx);
284
if (result == NULL){
285
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
286
} else {
287
fprintf(stderr, "Unsupported algorithm: %s\n",
288
result->unsupported_algorithm);
289
fprintf(stderr, "Wrong key usage: %u\n",
290
result->wrong_key_usage);
291
if(result->file_name != NULL){
292
fprintf(stderr, "File name: %s\n", result->file_name);
293
}
294
gpgme_recipient_t recipient;
295
recipient = result->recipients;
296
if(recipient){
297
while(recipient != NULL){
298
fprintf(stderr, "Public key algorithm: %s\n",
299
gpgme_pubkey_algo_name(recipient->pubkey_algo));
300
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
301
fprintf(stderr, "Secret key available: %s\n",
302
recipient->status == GPG_ERR_NO_SECKEY
303
? "No" : "Yes");
304
recipient = recipient->next;
305
}
162
return -1;
163
}
164
165
if(debug){
166
fprintf(stderr, "Decryption of OpenPGP packet succeeded\n");
167
}
168
169
if (debug){
170
gpgme_decrypt_result_t result;
171
result = gpgme_op_decrypt_result(ctx);
172
if (result == NULL){
173
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
174
} else {
175
fprintf(stderr, "Unsupported algorithm: %s\n",
176
result->unsupported_algorithm);
177
fprintf(stderr, "Wrong key usage: %d\n",
178
result->wrong_key_usage);
179
if(result->file_name != NULL){
180
fprintf(stderr, "File name: %s\n", result->file_name);
181
}
182
gpgme_recipient_t recipient;
183
recipient = result->recipients;
184
if(recipient){
185
while(recipient != NULL){
186
fprintf(stderr, "Public key algorithm: %s\n",
187
gpgme_pubkey_algo_name(recipient->pubkey_algo));
188
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
189
fprintf(stderr, "Secret key available: %s\n",
190
recipient->status == GPG_ERR_NO_SECKEY
191
? "No" : "Yes");
192
recipient = recipient->next;
306
193
}
307
194
}
308
195
}
309
goto decrypt_end;
310
196
}
311
197
312
if(debug){
313
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
314
}
198
/* Delete the GPGME FILE pointer cryptotext data buffer */
199
gpgme_data_release(dh_crypto);
315
200
316
201
/* Seek back to the beginning of the GPGME plaintext data buffer */
317
202
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
318
203
perror("pgpme_data_seek");
319
plaintext_length = -1;
320
goto decrypt_end;
321
204
}
322
205
323
*plaintext = NULL;
206
*new_packet = 0;
324
207
while(true){
325
plaintext_capacity = adjustbuffer(plaintext,
326
(size_t)plaintext_length,
327
plaintext_capacity);
328
if (plaintext_capacity == 0){
329
perror("adjustbuffer");
330
plaintext_length = -1;
331
goto decrypt_end;
208
if (new_packet_length + BUFFER_SIZE > new_packet_capacity){
209
*new_packet = realloc(*new_packet,
210
(unsigned int)new_packet_capacity
211
+ BUFFER_SIZE);
212
if (*new_packet == NULL){
213
perror("realloc");
214
return -1;
215
}
216
new_packet_capacity += BUFFER_SIZE;
332
217
}
333
218
334
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
219
ret = gpgme_data_read(dh_plain, *new_packet + new_packet_length,
335
220
BUFFER_SIZE);
336
221
/* Print the data, if any */
337
222
if (ret == 0){
338
/* EOF */
339
223
break;
340
224
}
341
225
if(ret < 0){
342
226
perror("gpgme_data_read");
343
plaintext_length = -1;
344
goto decrypt_end;
345
}
346
plaintext_length += ret;
347
}
348
349
if(debug){
350
fprintf(stderr, "Decrypted password is: ");
351
for(ssize_t i = 0; i < plaintext_length; i++){
352
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
353
}
354
fprintf(stderr, "\n");
355
}
356
357
decrypt_end:
358
359
/* Delete the GPGME cryptotext data buffer */
360
gpgme_data_release(dh_crypto);
227
return -1;
228
}
229
new_packet_length += ret;
230
}
231
232
/* FIXME: check characters before printing to screen so to not print
233
terminal control characters */
234
/* if(debug){ */
235
/* fprintf(stderr, "decrypted password is: "); */
236
/* fwrite(*new_packet, 1, new_packet_length, stderr); */
237
/* fprintf(stderr, "\n"); */
238
/* } */
361
239
362
240
/* Delete the GPGME plaintext data buffer */
363
241
gpgme_data_release(dh_plain);
364
return plaintext_length;
242
return new_packet_length;
365
243
}
366
244
367
245
static const char * safer_gnutls_strerror (int value) {
368
const char *ret = gnutls_strerror (value); /* Spurious warning */
246
const char *ret = gnutls_strerror (value);
369
247
if (ret == NULL)
370
248
ret = "(unknown)";
371
249
return ret;
372
250
}
373
251
374
/* GnuTLS log function callback */
375
252
static void debuggnutls(__attribute__((unused)) int level,
376
253
const char* string){
377
fprintf(stderr, "GnuTLS: %s", string);
254
fprintf(stderr, "%s", string);
378
255
}
379
256
380
static int init_gnutls_global(mandos_context *mc,
381
const char *pubkeyfilename,
382
const char *seckeyfilename){
257
static int initgnutls(mandos_context *mc){
258
const char *err;
383
259
int ret;
384
260
385
261
if(debug){
386
262
fprintf(stderr, "Initializing GnuTLS\n");
387
263
}
388
389
ret = gnutls_global_init();
390
if (ret != GNUTLS_E_SUCCESS) {
391
fprintf (stderr, "GnuTLS global_init: %s\n",
392
safer_gnutls_strerror(ret));
264
265
if ((ret = gnutls_global_init ())
266
!= GNUTLS_E_SUCCESS) {
267
fprintf (stderr, "global_init: %s\n", safer_gnutls_strerror(ret));
393
268
return -1;
394
269
}
395
270
396
271
if (debug){
397
/* "Use a log level over 10 to enable all debugging options."
398
* - GnuTLS manual
399
*/
400
272
gnutls_global_set_log_level(11);
401
273
gnutls_global_set_log_function(debuggnutls);
402
274
}
403
275
404
/* OpenPGP credentials */
405
gnutls_certificate_allocate_credentials(&mc->cred);
406
if (ret != GNUTLS_E_SUCCESS){
407
fprintf (stderr, "GnuTLS memory error: %s\n", /* Spurious
408
warning */
276
/* openpgp credentials */
277
if ((ret = gnutls_certificate_allocate_credentials (&es->cred))
278
!= GNUTLS_E_SUCCESS) {
279
fprintf (stderr, "memory error: %s\n",
409
280
safer_gnutls_strerror(ret));
410
gnutls_global_deinit ();
411
281
return -1;
412
282
}
413
283
414
284
if(debug){
415
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
416
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
417
seckeyfilename);
285
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
286
" and keyfile %s as GnuTLS credentials\n", certfile,
287
certkey);
418
288
}
419
289
420
290
ret = gnutls_certificate_set_openpgp_key_file
421
(mc->cred, pubkeyfilename, seckeyfilename,
422
GNUTLS_OPENPGP_FMT_BASE64);
291
(es->cred, certfile, certkey, GNUTLS_OPENPGP_FMT_BASE64);
423
292
if (ret != GNUTLS_E_SUCCESS) {
424
fprintf(stderr,
425
"Error[%d] while reading the OpenPGP key pair ('%s',"
426
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
427
fprintf(stderr, "The GnuTLS error is: %s\n",
293
fprintf
294
(stderr, "Error[%d] while reading the OpenPGP key pair ('%s',"
295
" '%s')\n",
296
ret, certfile, certkey);
297
fprintf(stdout, "The Error is: %s\n",
428
298
safer_gnutls_strerror(ret));
429
goto globalfail;
430
}
431
432
/* GnuTLS server initialization */
433
ret = gnutls_dh_params_init(&mc->dh_params);
434
if (ret != GNUTLS_E_SUCCESS) {
435
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
436
" %s\n", safer_gnutls_strerror(ret));
437
goto globalfail;
438
}
439
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
440
if (ret != GNUTLS_E_SUCCESS) {
441
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
442
safer_gnutls_strerror(ret));
443
goto globalfail;
444
}
445
446
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
447
448
return 0;
449
450
globalfail:
451
452
gnutls_certificate_free_credentials(mc->cred);
453
gnutls_global_deinit();
454
return -1;
455
}
456
457
static int init_gnutls_session(mandos_context *mc,
458
gnutls_session_t *session){
459
int ret;
460
/* GnuTLS session creation */
461
ret = gnutls_init(session, GNUTLS_SERVER);
462
if (ret != GNUTLS_E_SUCCESS){
299
return -1;
300
}
301
302
//GnuTLS server initialization
303
if ((ret = gnutls_dh_params_init (&es->dh_params))
304
!= GNUTLS_E_SUCCESS) {
305
fprintf (stderr, "Error in dh parameter initialization: %s\n",
306
safer_gnutls_strerror(ret));
307
return -1;
308
}
309
310
if ((ret = gnutls_dh_params_generate2 (es->dh_params, DH_BITS))
311
!= GNUTLS_E_SUCCESS) {
312
fprintf (stderr, "Error in prime generation: %s\n",
313
safer_gnutls_strerror(ret));
314
return -1;
315
}
316
317
gnutls_certificate_set_dh_params (es->cred, es->dh_params);
318
319
// GnuTLS session creation
320
if ((ret = gnutls_init (&es->session, GNUTLS_SERVER))
321
!= GNUTLS_E_SUCCESS){
463
322
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
464
323
safer_gnutls_strerror(ret));
465
324
}
466
325
467
{
468
const char *err;
469
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
470
if (ret != GNUTLS_E_SUCCESS) {
471
fprintf(stderr, "Syntax error at: %s\n", err);
472
fprintf(stderr, "GnuTLS error: %s\n",
473
safer_gnutls_strerror(ret));
474
gnutls_deinit (*session);
475
return -1;
476
}
326
if ((ret = gnutls_priority_set_direct (es->session, mc->priority, &err))
327
!= GNUTLS_E_SUCCESS) {
328
fprintf(stderr, "Syntax error at: %s\n", err);
329
fprintf(stderr, "GnuTLS error: %s\n",
330
safer_gnutls_strerror(ret));
331
return -1;
477
332
}
478
333
479
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
480
mc->cred);
481
if (ret != GNUTLS_E_SUCCESS) {
482
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
334
if ((ret = gnutls_credentials_set
335
(es->session, GNUTLS_CRD_CERTIFICATE, es->cred))
336
!= GNUTLS_E_SUCCESS) {
337
fprintf(stderr, "Error setting a credentials set: %s\n",
483
338
safer_gnutls_strerror(ret));
484
gnutls_deinit (*session);
485
339
return -1;
486
340
}
487
341
488
342
/* ignore client certificate if any. */
489
gnutls_certificate_server_set_request (*session,
343
gnutls_certificate_server_set_request (es->session,
490
344
GNUTLS_CERT_IGNORE);
491
345
492
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
346
gnutls_dh_set_prime_bits (es->session, DH_BITS);
493
347
494
348
return 0;
495
349
}
496
350
497
/* Avahi log function callback */
498
351
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
499
352
__attribute__((unused)) const char *txt){}
500
353
501
/* Called when a Mandos server is found */
502
354
static int start_mandos_communication(const char *ip, uint16_t port,
503
355
AvahiIfIndex if_index,
504
356
mandos_context *mc){
505
357
int ret, tcp_sd;
506
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
358
struct sockaddr_in6 to;
359
encrypted_session es;
507
360
char *buffer = NULL;
508
361
char *decrypted_buffer;
509
362
size_t buffer_length = 0;
510
363
size_t buffer_capacity = 0;
511
364
ssize_t decrypted_buffer_size;
512
size_t written;
365
size_t written = 0;
513
366
int retval = 0;
514
367
char interface[IF_NAMESIZE];
515
gnutls_session_t session;
516
517
ret = init_gnutls_session (mc, &session);
518
if (ret != 0){
519
return -1;
520
}
521
368
522
369
if(debug){
523
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
524
"\n", ip, port);
370
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
371
ip, port);
525
372
}
526
373
527
374
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
529
376
perror("socket");
530
377
return -1;
531
378
}
532
379
533
380
if(debug){
534
381
if(if_indextoname((unsigned int)if_index, interface) == NULL){
535
perror("if_indextoname");
382
if(debug){
383
perror("if_indextoname");
384
}
536
385
return -1;
537
386
}
387
538
388
fprintf(stderr, "Binding to interface %s\n", interface);
539
389
}
540
390
541
memset(&to, 0, sizeof(to));
542
to.in6.sin6_family = AF_INET6;
543
/* It would be nice to have a way to detect if we were passed an
544
IPv4 address here. Now we assume an IPv6 address. */
545
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
391
memset(&to,0,sizeof(to)); /* Spurious warning */
392
to.sin6_family = AF_INET6;
393
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
546
394
if (ret < 0 ){
547
395
perror("inet_pton");
548
396
return -1;
549
}
397
}
550
398
if(ret == 0){
551
399
fprintf(stderr, "Bad address: %s\n", ip);
552
400
return -1;
553
401
}
554
to.in6.sin6_port = htons(port); /* Spurious warning */
402
to.sin6_port = htons(port); /* Spurious warning */
555
403
556
to.in6.sin6_scope_id = (uint32_t)if_index;
404
to.sin6_scope_id = (uint32_t)if_index;
557
405
558
406
if(debug){
559
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
560
port);
561
char addrstr[INET6_ADDRSTRLEN] = "";
562
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
563
sizeof(addrstr)) == NULL){
564
perror("inet_ntop");
565
} else {
566
if(strcmp(addrstr, ip) != 0){
567
fprintf(stderr, "Canonical address form: %s\n", addrstr);
568
}
569
}
407
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
408
/* char addrstr[INET6_ADDRSTRLEN]; */
409
/* if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr, */
410
/* sizeof(addrstr)) == NULL){ */
411
/* perror("inet_ntop"); */
412
/* } else { */
413
/* fprintf(stderr, "Really connecting to: %s, port %d\n", */
414
/* addrstr, ntohs(to.sin6_port)); */
415
/* } */
570
416
}
571
417
572
ret = connect(tcp_sd, &to.in, sizeof(to));
418
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
573
419
if (ret < 0){
574
420
perror("connect");
575
421
return -1;
576
422
}
577
423
578
const char *out = mandos_protocol_version;
579
written = 0;
580
while (true){
581
size_t out_size = strlen(out);
582
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
583
out_size - written));
584
if (ret == -1){
585
perror("write");
586
retval = -1;
587
goto mandos_end;
588
}
589
written += (size_t)ret;
590
if(written < out_size){
591
continue;
592
} else {
593
if (out == mandos_protocol_version){
594
written = 0;
595
out = "\r\n";
596
} else {
597
break;
598
}
599
}
424
ret = initgnutls (&es);
425
if (ret != 0){
426
retval = -1;
427
return -1;
600
428
}
601
429
430
gnutls_transport_set_ptr (es.session,
431
(gnutls_transport_ptr_t) tcp_sd);
432
602
433
if(debug){
603
434
fprintf(stderr, "Establishing TLS session with %s\n", ip);
604
435
}
605
436
606
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
607
608
do{
609
ret = gnutls_handshake (session);
610
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
437
ret = gnutls_handshake (es.session);
611
438
612
439
if (ret != GNUTLS_E_SUCCESS){
613
440
if(debug){
614
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
441
fprintf(stderr, "\n*** Handshake failed ***\n");
615
442
gnutls_perror (ret);
616
443
}
617
444
retval = -1;
618
goto mandos_end;
445
goto exit;
619
446
}
620
447
621
/* Read OpenPGP packet that contains the wanted password */
448
//Retrieve OpenPGP packet that contains the wanted password
622
449
623
450
if(debug){
624
451
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
625
452
ip);
626
453
}
627
454
628
455
while(true){
629
buffer_capacity = adjustbuffer(&buffer, buffer_length,
630
buffer_capacity);
631
if (buffer_capacity == 0){
632
perror("adjustbuffer");
633
retval = -1;
634
goto mandos_end;
456
if (buffer_length + BUFFER_SIZE > buffer_capacity){
457
buffer = realloc(buffer, buffer_capacity + BUFFER_SIZE);
458
if (buffer == NULL){
459
perror("realloc");
460
goto exit;
461
}
462
buffer_capacity += BUFFER_SIZE;
635
463
}
636
464
637
ret = gnutls_record_recv(session, buffer+buffer_length,
638
BUFFER_SIZE);
465
ret = gnutls_record_recv
466
(es.session, buffer+buffer_length, BUFFER_SIZE);
639
467
if (ret == 0){
640
468
break;
641
469
}
645
473
case GNUTLS_E_AGAIN:
646
474
break;
647
475
case GNUTLS_E_REHANDSHAKE:
648
do{
649
ret = gnutls_handshake (session);
650
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
476
ret = gnutls_handshake (es.session);
651
477
if (ret < 0){
652
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
478
fprintf(stderr, "\n*** Handshake failed ***\n");
653
479
gnutls_perror (ret);
654
480
retval = -1;
655
goto mandos_end;
481
goto exit;
656
482
}
657
483
break;
658
484
default:
659
485
fprintf(stderr, "Unknown error while reading data from"
660
" encrypted session with Mandos server\n");
486
" encrypted session with mandos server\n");
661
487
retval = -1;
662
gnutls_bye (session, GNUTLS_SHUT_RDWR);
663
goto mandos_end;
488
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
489
goto exit;
664
490
}
665
491
} else {
666
492
buffer_length += (size_t) ret;
667
493
}
668
494
}
669
495
670
if(debug){
671
fprintf(stderr, "Closing TLS session\n");
672
}
673
674
gnutls_bye (session, GNUTLS_SHUT_RDWR);
675
676
496
if (buffer_length > 0){
677
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
497
decrypted_buffer_size = pgp_packet_decrypt(buffer,
678
498
buffer_length,
679
&decrypted_buffer);
499
&decrypted_buffer,
500
certdir);
680
501
if (decrypted_buffer_size >= 0){
681
written = 0;
682
502
while(written < (size_t) decrypted_buffer_size){
683
503
ret = (int)fwrite (decrypted_buffer + written, 1,
684
504
(size_t)decrypted_buffer_size - written,
697
517
} else {
698
518
retval = -1;
699
519
}
700
} else {
701
retval = -1;
702
}
703
704
/* Shutdown procedure */
705
706
mandos_end:
520
}
521
522
//shutdown procedure
523
524
if(debug){
525
fprintf(stderr, "Closing TLS session\n");
526
}
527
707
528
free(buffer);
708
ret = TEMP_FAILURE_RETRY(close(tcp_sd));
709
if(ret == -1){
710
perror("close");
711
}
712
gnutls_deinit (session);
529
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
530
exit:
531
close(tcp_sd);
532
gnutls_deinit (es.session);
533
gnutls_certificate_free_credentials (es.cred);
534
gnutls_global_deinit ();
713
535
return retval;
714
536
}
715
537
716
static void resolve_callback(AvahiSServiceResolver *r,
717
AvahiIfIndex interface,
718
AVAHI_GCC_UNUSED AvahiProtocol protocol,
719
AvahiResolverEvent event,
720
const char *name,
721
const char *type,
722
const char *domain,
723
const char *host_name,
724
const AvahiAddress *address,
725
uint16_t port,
726
AVAHI_GCC_UNUSED AvahiStringList *txt,
727
AVAHI_GCC_UNUSED AvahiLookupResultFlags
728
flags,
729
void* userdata) {
538
static void resolve_callback( 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) {
730
551
mandos_context *mc = userdata;
731
assert(r);
552
assert(r); /* Spurious warning */
732
553
733
554
/* Called whenever a service has been resolved successfully or
734
555
timed out */
736
557
switch (event) {
737
558
default:
738
559
case AVAHI_RESOLVER_FAILURE:
739
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
740
" of type '%s' in domain '%s': %s\n", name, type, domain,
560
fprintf(stderr, "(Resolver) Failed to resolve service '%s' of"
561
" type '%s' in domain '%s': %s\n", name, type, domain,
741
562
avahi_strerror(avahi_server_errno(mc->server)));
742
563
break;
743
564
746
567
char ip[AVAHI_ADDRESS_STR_MAX];
747
568
avahi_address_snprint(ip, sizeof(ip), address);
748
569
if(debug){
749
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
750
PRIu16 ") on port %d\n", name, host_name, ip,
751
interface, port);
570
fprintf(stderr, "Mandos server \"%s\" found on %s (%s) on"
571
" port %d\n", name, host_name, ip, port);
752
572
}
753
573
int ret = start_mandos_communication(ip, port, interface, mc);
754
574
if (ret == 0){
755
avahi_simple_poll_quit(mc->simple_poll);
575
exit(EXIT_SUCCESS);
756
576
}
757
577
}
758
578
}
766
586
const char *name,
767
587
const char *type,
768
588
const char *domain,
769
AVAHI_GCC_UNUSED AvahiLookupResultFlags
770
flags,
589
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
771
590
void* userdata) {
772
591
mandos_context *mc = userdata;
773
assert(b);
592
assert(b); /* Spurious warning */
774
593
775
594
/* Called whenever a new services becomes available on the LAN or
776
595
is removed from the LAN */
778
597
switch (event) {
779
598
default:
780
599
case AVAHI_BROWSER_FAILURE:
781
782
fprintf(stderr, "(Avahi browser) %s\n",
600
601
fprintf(stderr, "(Browser) %s\n",
783
602
avahi_strerror(avahi_server_errno(mc->server)));
784
603
avahi_simple_poll_quit(mc->simple_poll);
785
604
return;
786
605
787
606
case AVAHI_BROWSER_NEW:
788
/* We ignore the returned Avahi resolver object. In the callback
789
function we free it. If the Avahi server is terminated before
790
the callback function is called the Avahi server will free the
791
resolver for us. */
792
793
if (!(avahi_s_service_resolver_new(mc->server, interface,
794
protocol, name, type, domain,
607
/* We ignore the returned resolver object. In the callback
608
function we free it. If the server is terminated before
609
the callback function is called the server will free
610
the resolver for us. */
611
612
if (!(avahi_s_service_resolver_new(mc->server, interface, protocol, name,
613
type, domain,
795
614
AVAHI_PROTO_INET6, 0,
796
615
resolve_callback, mc)))
797
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
798
name, avahi_strerror(avahi_server_errno(mc->server)));
616
fprintf(stderr, "Failed to resolve service '%s': %s\n", name,
617
avahi_strerror(avahi_server_errno(s)));
799
618
break;
800
619
801
620
case AVAHI_BROWSER_REMOVE:
802
621
break;
803
622
804
623
case AVAHI_BROWSER_ALL_FOR_NOW:
805
624
case AVAHI_BROWSER_CACHE_EXHAUSTED:
806
if(debug){
807
fprintf(stderr, "No Mandos server found, still searching...\n");
808
}
809
625
break;
810
626
}
811
627
}
812
628
813
int main(int argc, char *argv[]){
629
/* Combines file name and path and returns the malloced new
630
string. some sane checks could/should be added */
631
static const char *combinepath(const char *first, const char *second){
632
size_t f_len = strlen(first);
633
size_t s_len = strlen(second);
634
char *tmp = malloc(f_len + s_len + 2);
635
if (tmp == NULL){
636
return NULL;
637
}
638
if(f_len > 0){
639
memcpy(tmp, first, f_len);
640
}
641
tmp[f_len] = '/';
642
if(s_len > 0){
643
memcpy(tmp + f_len + 1, second, s_len);
644
}
645
tmp[f_len + 1 + s_len] = '\0';
646
return tmp;
647
}
648
649
650
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
651
AvahiServerConfig config;
814
652
AvahiSServiceBrowser *sb = NULL;
815
653
int error;
816
654
int ret;
817
int exitcode = EXIT_SUCCESS;
655
int returncode = EXIT_SUCCESS;
818
656
const char *interface = "eth0";
819
657
struct ifreq network;
820
658
int sd;
821
uid_t uid;
822
gid_t gid;
823
659
char *connect_to = NULL;
824
char tempdir[] = "/tmp/mandosXXXXXX";
825
660
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
826
const char *seckey = PATHDIR "/" SECKEY;
827
const char *pubkey = PATHDIR "/" PUBKEY;
828
829
661
mandos_context mc = { .simple_poll = NULL, .server = NULL,
830
.dh_bits = 1024, .priority = "SECURE256"
831
":!CTYPE-X.509:+CTYPE-OPENPGP" };
832
bool gnutls_initalized = false;
833
bool pgpme_initalized = false;
662
.dh_bits = 2048, .priority = "SECURE256"};
834
663
835
{
836
struct argp_option options[] = {
837
{ .name = "debug", .key = 128,
838
.doc = "Debug mode", .group = 3 },
839
{ .name = "connect", .key = 'c',
840
.arg = "ADDRESS:PORT",
841
.doc = "Connect directly to a specific Mandos server",
842
.group = 1 },
843
{ .name = "interface", .key = 'i',
844
.arg = "NAME",
845
.doc = "Interface that will be used to search for Mandos"
846
" servers",
847
.group = 1 },
848
{ .name = "seckey", .key = 's',
849
.arg = "FILE",
850
.doc = "OpenPGP secret key file base name",
851
.group = 1 },
852
{ .name = "pubkey", .key = 'p',
853
.arg = "FILE",
854
.doc = "OpenPGP public key file base name",
855
.group = 2 },
856
{ .name = "dh-bits", .key = 129,
857
.arg = "BITS",
858
.doc = "Bit length of the prime number used in the"
859
" Diffie-Hellman key exchange",
860
.group = 2 },
861
{ .name = "priority", .key = 130,
862
.arg = "STRING",
863
.doc = "GnuTLS priority string for the TLS handshake",
864
.group = 1 },
865
{ .name = NULL }
866
};
867
868
error_t parse_opt (int key, char *arg,
869
struct argp_state *state) {
870
/* Get the INPUT argument from `argp_parse', which we know is
871
a pointer to our plugin list pointer. */
872
switch (key) {
873
case 128: /* --debug */
874
debug = true;
875
break;
876
case 'c': /* --connect */
877
connect_to = arg;
878
break;
879
case 'i': /* --interface */
880
interface = arg;
881
break;
882
case 's': /* --seckey */
883
seckey = arg;
884
break;
885
case 'p': /* --pubkey */
886
pubkey = arg;
887
break;
888
case 129: /* --dh-bits */
664
while (true){
665
static struct option long_options[] = {
666
{"debug", no_argument, (int *)&debug, 1},
667
{"connect", required_argument, 0, 'C'},
668
{"interface", required_argument, 0, 'i'},
669
{"certdir", required_argument, 0, 'd'},
670
{"certkey", required_argument, 0, 'c'},
671
{"certfile", required_argument, 0, 'k'},
672
{"dh_bits", required_argument, 0, 'D'},
673
{"priority", required_argument, 0, 'p'},
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
case 'D':
703
{
704
long int tmp;
889
705
errno = 0;
890
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
891
if (errno){
706
tmp = strtol(optarg, NULL, 10);
707
if (errno == ERANGE){
892
708
perror("strtol");
893
709
exit(EXIT_FAILURE);
894
710
}
895
break;
896
case 130: /* --priority */
897
mc.priority = arg;
898
break;
899
case ARGP_KEY_ARG:
900
argp_usage (state);
901
case ARGP_KEY_END:
902
break;
903
default:
904
return ARGP_ERR_UNKNOWN;
905
}
906
return 0;
907
}
908
909
struct argp argp = { .options = options, .parser = parse_opt,
910
.args_doc = "",
911
.doc = "Mandos client -- Get and decrypt"
912
" passwords from a Mandos server" };
913
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
914
if (ret == ARGP_ERR_UNKNOWN){
915
fprintf(stderr, "Unknown error while parsing arguments\n");
916
exitcode = EXIT_FAILURE;
917
goto end;
918
}
919
}
920
921
/* If the interface is down, bring it up */
922
{
923
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
924
if(sd < 0) {
925
perror("socket");
926
exitcode = EXIT_FAILURE;
927
goto end;
928
}
929
strcpy(network.ifr_name, interface);
930
ret = ioctl(sd, SIOCGIFFLAGS, &network);
931
if(ret == -1){
932
perror("ioctl SIOCGIFFLAGS");
933
exitcode = EXIT_FAILURE;
934
goto end;
935
}
936
if((network.ifr_flags & IFF_UP) == 0){
937
network.ifr_flags |= IFF_UP;
938
ret = ioctl(sd, SIOCSIFFLAGS, &network);
939
if(ret == -1){
940
perror("ioctl SIOCSIFFLAGS");
941
exitcode = EXIT_FAILURE;
942
goto end;
943
}
944
}
945
ret = TEMP_FAILURE_RETRY(close(sd));
946
if(ret == -1){
947
perror("close");
948
}
949
}
950
951
uid = getuid();
952
gid = getgid();
953
954
ret = setuid(uid);
955
if (ret == -1){
956
perror("setuid");
957
}
958
959
setgid(gid);
960
if (ret == -1){
961
perror("setgid");
962
}
963
964
ret = init_gnutls_global(&mc, pubkey, seckey);
965
if (ret == -1){
966
fprintf(stderr, "init_gnutls_global failed\n");
967
exitcode = EXIT_FAILURE;
968
goto end;
969
} else {
970
gnutls_initalized = true;
971
}
972
973
if(mkdtemp(tempdir) == NULL){
974
perror("mkdtemp");
975
tempdir[0] = '\0';
976
goto end;
977
}
978
979
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
980
fprintf(stderr, "pgpme_initalized failed\n");
981
exitcode = EXIT_FAILURE;
982
goto end;
983
} else {
984
pgpme_initalized = true;
711
mc.dh_bits = tmp;
712
}
713
break;
714
case 'p':
715
mc.priority = optarg;
716
break;
717
default:
718
exit(EXIT_FAILURE);
719
}
720
}
721
722
certfile = combinepath(certdir, certfile);
723
if (certfile == NULL){
724
perror("combinepath");
725
returncode = EXIT_FAILURE;
726
goto exit;
727
}
728
729
certkey = combinepath(certdir, certkey);
730
if (certkey == NULL){
731
perror("combinepath");
732
returncode = EXIT_FAILURE;
733
goto exit;
985
734
}
986
735
987
736
if_index = (AvahiIfIndex) if_nametoindex(interface);
996
745
char *address = strrchr(connect_to, ':');
997
746
if(address == NULL){
998
747
fprintf(stderr, "No colon in address\n");
999
exitcode = EXIT_FAILURE;
1000
goto end;
748
exit(EXIT_FAILURE);
1001
749
}
1002
750
errno = 0;
1003
751
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
1004
752
if(errno){
1005
753
perror("Bad port number");
1006
exitcode = EXIT_FAILURE;
1007
goto end;
754
exit(EXIT_FAILURE);
1008
755
}
1009
756
*address = '\0';
1010
757
address = connect_to;
1011
ret = start_mandos_communication(address, port, if_index, &mc);
758
ret = start_mandos_communication(address, port, if_index);
1012
759
if(ret < 0){
1013
exitcode = EXIT_FAILURE;
760
exit(EXIT_FAILURE);
1014
761
} else {
1015
exitcode = EXIT_SUCCESS;
1016
}
1017
goto end;
1018
}
762
exit(EXIT_SUCCESS);
763
}
764
}
765
766
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
767
if(sd < 0) {
768
perror("socket");
769
returncode = EXIT_FAILURE;
770
goto exit;
771
}
772
strcpy(network.ifr_name, interface);
773
ret = ioctl(sd, SIOCGIFFLAGS, &network);
774
if(ret == -1){
775
776
perror("ioctl SIOCGIFFLAGS");
777
returncode = EXIT_FAILURE;
778
goto exit;
779
}
780
if((network.ifr_flags & IFF_UP) == 0){
781
network.ifr_flags |= IFF_UP;
782
ret = ioctl(sd, SIOCSIFFLAGS, &network);
783
if(ret == -1){
784
perror("ioctl SIOCSIFFLAGS");
785
returncode = EXIT_FAILURE;
786
goto exit;
787
}
788
}
789
close(sd);
1019
790
1020
791
if (not debug){
1021
792
avahi_set_log_function(empty_log);
1022
793
}
1023
794
1024
/* Initialize the pseudo-RNG for Avahi */
795
/* Initialize the psuedo-RNG */
1025
796
srand((unsigned int) time(NULL));
1026
1027
/* Allocate main Avahi loop object */
1028
mc.simple_poll = avahi_simple_poll_new();
1029
if (mc.simple_poll == NULL) {
1030
fprintf(stderr, "Avahi: Failed to create simple poll"
1031
" object.\n");
1032
exitcode = EXIT_FAILURE;
1033
goto end;
1034
}
1035
1036
{
1037
AvahiServerConfig config;
1038
/* Do not publish any local Zeroconf records */
1039
avahi_server_config_init(&config);
1040
config.publish_hinfo = 0;
1041
config.publish_addresses = 0;
1042
config.publish_workstation = 0;
1043
config.publish_domain = 0;
1044
1045
/* Allocate a new server */
1046
mc.server = avahi_server_new(avahi_simple_poll_get
1047
(mc.simple_poll), &config, NULL,
1048
NULL, &error);
1049
1050
/* Free the Avahi configuration data */
1051
avahi_server_config_free(&config);
1052
}
1053
1054
/* Check if creating the Avahi server object succeeded */
1055
if (mc.server == NULL) {
1056
fprintf(stderr, "Failed to create Avahi server: %s\n",
797
798
/* Allocate main loop object */
799
if (!(mc.simple_poll = avahi_simple_poll_new())) {
800
fprintf(stderr, "Failed to create simple poll object.\n");
801
returncode = EXIT_FAILURE;
802
goto exit;
803
}
804
805
/* Do not publish any local records */
806
avahi_server_config_init(&config);
807
config.publish_hinfo = 0;
808
config.publish_addresses = 0;
809
config.publish_workstation = 0;
810
config.publish_domain = 0;
811
812
/* Allocate a new server */
813
mc.server = avahi_server_new(avahi_simple_poll_get(simple_poll),
814
&config, NULL, NULL, &error);
815
816
/* Free the configuration data */
817
avahi_server_config_free(&config);
818
819
/* Check if creating the server object succeeded */
820
if (!mc.server) {
821
fprintf(stderr, "Failed to create server: %s\n",
1057
822
avahi_strerror(error));
1058
exitcode = EXIT_FAILURE;
1059
goto end;
823
returncode = EXIT_FAILURE;
824
goto exit;
1060
825
}
1061
826
1062
/* Create the Avahi service browser */
827
/* Create the service browser */
1063
828
sb = avahi_s_service_browser_new(mc.server, if_index,
1064
829
AVAHI_PROTO_INET6,
1065
830
"_mandos._tcp", NULL, 0,
1066
831
browse_callback, &mc);
1067
if (sb == NULL) {
832
if (!sb) {
1068
833
fprintf(stderr, "Failed to create service browser: %s\n",
1069
834
avahi_strerror(avahi_server_errno(mc.server)));
1070
exitcode = EXIT_FAILURE;
1071
goto end;
835
returncode = EXIT_FAILURE;
836
goto exit;
1072
837
}
1073
838
1074
839
/* Run the main loop */
1075
840
1076
841
if (debug){
1077
fprintf(stderr, "Starting Avahi loop search\n");
842
fprintf(stderr, "Starting avahi loop search\n");
1078
843
}
1079
844
1080
avahi_simple_poll_loop(mc.simple_poll);
1081
1082
end:
1083
845
avahi_simple_poll_loop(simple_poll);
846
847
exit:
848
1084
849
if (debug){
1085
850
fprintf(stderr, "%s exiting\n", argv[0]);
1086
851
}
1087
852
1088
853
/* Cleanup things */
1089
if (sb != NULL)
854
if (sb)
1090
855
avahi_s_service_browser_free(sb);
1091
856
1092
if (mc.server != NULL)
857
if (mc.server)
1093
858
avahi_server_free(mc.server);
1094
1095
if (mc.simple_poll != NULL)
1096
avahi_simple_poll_free(mc.simple_poll);
1097
1098
if (gnutls_initalized){
1099
gnutls_certificate_free_credentials(mc.cred);
1100
gnutls_global_deinit ();
1101
}
1102
1103
if(pgpme_initalized){
1104
gpgme_release(mc.ctx);
1105
}
1106
1107
/* Removes the temp directory used by GPGME */
1108
if(tempdir[0] != '\0'){
1109
DIR *d;
1110
struct dirent *direntry;
1111
d = opendir(tempdir);
1112
if(d == NULL){
1113
perror("opendir");
1114
} else {
1115
while(true){
1116
direntry = readdir(d);
1117
if(direntry == NULL){
1118
break;
1119
}
1120
if (direntry->d_type == DT_REG){
1121
char *fullname = NULL;
1122
ret = asprintf(&fullname, "%s/%s", tempdir,
1123
direntry->d_name);
1124
if(ret < 0){
1125
perror("asprintf");
1126
continue;
1127
}
1128
ret = unlink(fullname);
1129
if(ret == -1){
1130
fprintf(stderr, "unlink(\"%s\"): %s",
1131
fullname, strerror(errno));
1132
}
1133
free(fullname);
1134
}
1135
}
1136
}
1137
ret = rmdir(tempdir);
1138
if(ret == -1){
1139
perror("rmdir");
1140
}
1141
}
1142
1143
return exitcode;
859
860
if (simple_poll)
861
avahi_simple_poll_free(simple_poll);
862
free(certfile);
863
free(certkey);
864
865
return returncode;
1144
866
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0