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- Committer: Björn Påhlsson
- Date: 2008-08-03 14:57:46 UTC
- mto: (24.1.154 mandos) (237.4.3 mandos-release)
- mto: This revision was merged to the branch mainline in revision 41.
- Revision ID: belorn@braxen-20080803145746-4boahihngi1uwjap
merge commit
- 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
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
36
37
#include <stdio.h>
38
#include <assert.h>
39
#include <stdlib.h>
40
#include <time.h>
41
#include <net/if.h> /* if_nametoindex */
42
#include <sys/ioctl.h> // ioctl, ifreq, SIOCGIFFLAGS, IFF_UP, SIOCSIFFLAGS
43
#include <net/if.h> // ioctl, ifreq, SIOCGIFFLAGS, IFF_UP, SIOCSIFFLAGS
44
79
45
#include <avahi-core/core.h>
80
46
#include <avahi-core/lookup.h>
81
47
#include <avahi-core/log.h>
83
49
#include <avahi-common/malloc.h>
84
50
#include <avahi-common/error.h>
85
51
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_* */
52
//mandos client part
53
#include <sys/types.h> /* socket(), inet_pton() */
54
#include <sys/socket.h> /* socket(), 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>
101
72
102
73
#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 "pupkey.txt"
74
#define DH_BITS 1024
75
76
static const char *certdir = "/conf/conf.d/mandos";
77
static const char *certfile = "openpgp-client.txt";
78
static const char *certkey = "openpgp-client-key.txt";
111
79
112
80
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
117
/* Used for passing in values through the Avahi callback functions */
81
82
const char mandos_protocol_version[] = "1";
83
118
84
typedef struct {
119
85
AvahiSimplePoll *simple_poll;
120
86
AvahiServer *server;
121
87
gnutls_certificate_credentials_t cred;
122
88
unsigned int dh_bits;
123
gnutls_dh_params_t dh_params;
124
89
const char *priority;
125
gpgme_ctx_t ctx;
126
90
} mandos_context;
127
91
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,
92
size_t adjustbuffer(char *buffer, size_t buffer_length,
134
93
size_t buffer_capacity){
135
94
if (buffer_length + BUFFER_SIZE > buffer_capacity){
136
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
95
buffer = realloc(buffer, buffer_capacity + BUFFER_SIZE);
137
96
if (buffer == NULL){
138
97
return 0;
139
98
}
142
101
return buffer_capacity;
143
102
}
144
103
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;
104
static ssize_t pgp_packet_decrypt (char *packet, size_t packet_size,
105
char **new_packet,
106
const char *homedir){
107
gpgme_data_t dh_crypto, dh_plain;
108
gpgme_ctx_t ctx;
151
109
gpgme_error_t rc;
110
ssize_t ret;
111
size_t new_packet_capacity = 0;
112
ssize_t new_packet_length = 0;
152
113
gpgme_engine_info_t engine_info;
153
114
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
190
115
if (debug){
191
fprintf(stderr, "Initialize gpgme\n");
116
fprintf(stderr, "Trying to decrypt OpenPGP packet\n");
192
117
}
193
118
194
119
/* Init GPGME */
195
120
gpgme_check_version(NULL);
196
121
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
197
122
if (rc != GPG_ERR_NO_ERROR){
198
123
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
199
124
gpgme_strsource(rc), gpgme_strerror(rc));
200
return false;
125
return -1;
201
126
}
202
203
/* Set GPGME home directory for the OpenPGP engine only */
127
128
/* Set GPGME home directory */
204
129
rc = gpgme_get_engine_info (&engine_info);
205
130
if (rc != GPG_ERR_NO_ERROR){
206
131
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
207
132
gpgme_strsource(rc), gpgme_strerror(rc));
208
return false;
133
return -1;
209
134
}
210
135
while(engine_info != NULL){
211
136
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
212
137
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
213
engine_info->file_name, tempdir);
138
engine_info->file_name, homedir);
214
139
break;
215
140
}
216
141
engine_info = engine_info->next;
217
142
}
218
143
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);
144
fprintf(stderr, "Could not set home dir to %s\n", homedir);
145
return -1;
146
}
147
148
/* Create new GPGME data buffer from packet buffer */
149
rc = gpgme_data_new_from_mem(&dh_crypto, packet, packet_size, 0);
259
150
if (rc != GPG_ERR_NO_ERROR){
260
151
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
261
152
gpgme_strsource(rc), gpgme_strerror(rc));
267
158
if (rc != GPG_ERR_NO_ERROR){
268
159
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
269
160
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);
161
return -1;
162
}
163
164
/* Create new GPGME "context" */
165
rc = gpgme_new(&ctx);
166
if (rc != GPG_ERR_NO_ERROR){
167
fprintf(stderr, "bad gpgme_new: %s: %s\n",
168
gpgme_strsource(rc), gpgme_strerror(rc));
169
return -1;
170
}
171
172
/* Decrypt data from the FILE pointer to the plaintext data
173
buffer */
174
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
277
175
if (rc != GPG_ERR_NO_ERROR){
278
176
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
279
177
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
}
178
return -1;
179
}
180
181
if(debug){
182
fprintf(stderr, "Decryption of OpenPGP packet succeeded\n");
183
}
184
185
if (debug){
186
gpgme_decrypt_result_t result;
187
result = gpgme_op_decrypt_result(ctx);
188
if (result == NULL){
189
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
190
} else {
191
fprintf(stderr, "Unsupported algorithm: %s\n",
192
result->unsupported_algorithm);
193
fprintf(stderr, "Wrong key usage: %d\n",
194
result->wrong_key_usage);
195
if(result->file_name != NULL){
196
fprintf(stderr, "File name: %s\n", result->file_name);
197
}
198
gpgme_recipient_t recipient;
199
recipient = result->recipients;
200
if(recipient){
201
while(recipient != NULL){
202
fprintf(stderr, "Public key algorithm: %s\n",
203
gpgme_pubkey_algo_name(recipient->pubkey_algo));
204
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
205
fprintf(stderr, "Secret key available: %s\n",
206
recipient->status == GPG_ERR_NO_SECKEY
207
? "No" : "Yes");
208
recipient = recipient->next;
306
209
}
307
210
}
308
211
}
309
goto decrypt_end;
310
212
}
311
213
312
if(debug){
313
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
314
}
214
/* Delete the GPGME FILE pointer cryptotext data buffer */
215
gpgme_data_release(dh_crypto);
315
216
316
217
/* Seek back to the beginning of the GPGME plaintext data buffer */
317
218
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
318
219
perror("pgpme_data_seek");
319
plaintext_length = -1;
320
goto decrypt_end;
321
220
}
322
221
323
*plaintext = NULL;
222
*new_packet = 0;
324
223
while(true){
325
plaintext_capacity = adjustbuffer(plaintext,
326
(size_t)plaintext_length,
327
plaintext_capacity);
328
if (plaintext_capacity == 0){
224
new_packet_capacity = adjustbuffer(*new_packet, new_packet_length,
225
new_packet_capacity);
226
if (new_packet_capacity == 0){
329
227
perror("adjustbuffer");
330
plaintext_length = -1;
331
goto decrypt_end;
228
return -1;
229
}
230
new_packet_capacity += BUFFER_SIZE;
332
231
}
333
232
334
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
233
ret = gpgme_data_read(dh_plain, *new_packet + new_packet_length,
335
234
BUFFER_SIZE);
336
235
/* Print the data, if any */
337
236
if (ret == 0){
338
/* EOF */
339
237
break;
340
238
}
341
239
if(ret < 0){
342
240
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);
241
return -1;
242
}
243
new_packet_length += ret;
244
}
245
246
/* FIXME: check characters before printing to screen so to not print
247
terminal control characters */
248
/* if(debug){ */
249
/* fprintf(stderr, "decrypted password is: "); */
250
/* fwrite(*new_packet, 1, new_packet_length, stderr); */
251
/* fprintf(stderr, "\n"); */
252
/* } */
361
253
362
254
/* Delete the GPGME plaintext data buffer */
363
255
gpgme_data_release(dh_plain);
364
return plaintext_length;
256
return new_packet_length;
365
257
}
366
258
367
259
static const char * safer_gnutls_strerror (int value) {
368
const char *ret = gnutls_strerror (value); /* Spurious warning */
260
const char *ret = gnutls_strerror (value);
369
261
if (ret == NULL)
370
262
ret = "(unknown)";
371
263
return ret;
372
264
}
373
265
374
/* GnuTLS log function callback */
375
266
static void debuggnutls(__attribute__((unused)) int level,
376
267
const char* string){
377
fprintf(stderr, "GnuTLS: %s", string);
268
fprintf(stderr, "%s", string);
378
269
}
379
270
380
static int init_gnutls_global(mandos_context *mc,
381
const char *pubkeyfilename,
382
const char *seckeyfilename){
271
static int initgnutls(mandos_context *mc){
272
const char *err;
383
273
int ret;
384
274
385
275
if(debug){
386
276
fprintf(stderr, "Initializing GnuTLS\n");
387
277
}
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));
278
279
if ((ret = gnutls_global_init ())
280
!= GNUTLS_E_SUCCESS) {
281
fprintf (stderr, "global_init: %s\n", safer_gnutls_strerror(ret));
393
282
return -1;
394
283
}
395
284
396
285
if (debug){
397
/* "Use a log level over 10 to enable all debugging options."
398
* - GnuTLS manual
399
*/
400
286
gnutls_global_set_log_level(11);
401
287
gnutls_global_set_log_function(debuggnutls);
402
288
}
403
289
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 */
290
/* openpgp credentials */
291
if ((ret = gnutls_certificate_allocate_credentials (&es->cred))
292
!= GNUTLS_E_SUCCESS) {
293
fprintf (stderr, "memory error: %s\n",
409
294
safer_gnutls_strerror(ret));
410
gnutls_global_deinit ();
411
295
return -1;
412
296
}
413
297
414
298
if(debug){
415
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
416
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
417
seckeyfilename);
299
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
300
" and keyfile %s as GnuTLS credentials\n", certfile,
301
certkey);
418
302
}
419
303
420
304
ret = gnutls_certificate_set_openpgp_key_file
421
(mc->cred, pubkeyfilename, seckeyfilename,
422
GNUTLS_OPENPGP_FMT_BASE64);
305
(es->cred, certfile, certkey, GNUTLS_OPENPGP_FMT_BASE64);
423
306
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",
307
fprintf
308
(stderr, "Error[%d] while reading the OpenPGP key pair ('%s',"
309
" '%s')\n",
310
ret, certfile, certkey);
311
fprintf(stdout, "The Error is: %s\n",
428
312
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){
313
return -1;
314
}
315
316
//GnuTLS server initialization
317
if ((ret = gnutls_dh_params_init (&es->dh_params))
318
!= GNUTLS_E_SUCCESS) {
319
fprintf (stderr, "Error in dh parameter initialization: %s\n",
320
safer_gnutls_strerror(ret));
321
return -1;
322
}
323
324
if ((ret = gnutls_dh_params_generate2 (es->dh_params, DH_BITS))
325
!= GNUTLS_E_SUCCESS) {
326
fprintf (stderr, "Error in prime generation: %s\n",
327
safer_gnutls_strerror(ret));
328
return -1;
329
}
330
331
gnutls_certificate_set_dh_params (es->cred, es->dh_params);
332
333
// GnuTLS session creation
334
if ((ret = gnutls_init (&es->session, GNUTLS_SERVER))
335
!= GNUTLS_E_SUCCESS){
463
336
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
464
337
safer_gnutls_strerror(ret));
465
338
}
466
339
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
}
340
if ((ret = gnutls_priority_set_direct (es->session, mc->priority, &err))
341
!= GNUTLS_E_SUCCESS) {
342
fprintf(stderr, "Syntax error at: %s\n", err);
343
fprintf(stderr, "GnuTLS error: %s\n",
344
safer_gnutls_strerror(ret));
345
return -1;
477
346
}
478
347
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",
348
if ((ret = gnutls_credentials_set
349
(es->session, GNUTLS_CRD_CERTIFICATE, es->cred))
350
!= GNUTLS_E_SUCCESS) {
351
fprintf(stderr, "Error setting a credentials set: %s\n",
483
352
safer_gnutls_strerror(ret));
484
gnutls_deinit (*session);
485
353
return -1;
486
354
}
487
355
488
356
/* ignore client certificate if any. */
489
gnutls_certificate_server_set_request (*session,
357
gnutls_certificate_server_set_request (es->session,
490
358
GNUTLS_CERT_IGNORE);
491
359
492
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
360
gnutls_dh_set_prime_bits (es->session, DH_BITS);
493
361
494
362
return 0;
495
363
}
496
364
497
/* Avahi log function callback */
498
365
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
499
366
__attribute__((unused)) const char *txt){}
500
367
501
/* Called when a Mandos server is found */
502
368
static int start_mandos_communication(const char *ip, uint16_t port,
503
369
AvahiIfIndex if_index,
504
370
mandos_context *mc){
505
371
int ret, tcp_sd;
506
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
372
struct sockaddr_in6 to;
373
encrypted_session es;
507
374
char *buffer = NULL;
508
375
char *decrypted_buffer;
509
376
size_t buffer_length = 0;
512
379
size_t written;
513
380
int retval = 0;
514
381
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
382
522
383
if(debug){
523
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
524
"\n", ip, port);
384
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
385
ip, port);
525
386
}
526
387
527
388
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
529
390
perror("socket");
530
391
return -1;
531
392
}
532
393
533
394
if(debug){
534
395
if(if_indextoname((unsigned int)if_index, interface) == NULL){
535
perror("if_indextoname");
396
if(debug){
397
perror("if_indextoname");
398
}
536
399
return -1;
537
400
}
401
538
402
fprintf(stderr, "Binding to interface %s\n", interface);
539
403
}
540
404
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);
405
memset(&to,0,sizeof(to)); /* Spurious warning */
406
to.sin6_family = AF_INET6;
407
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
546
408
if (ret < 0 ){
547
409
perror("inet_pton");
548
410
return -1;
549
}
411
}
550
412
if(ret == 0){
551
413
fprintf(stderr, "Bad address: %s\n", ip);
552
414
return -1;
553
415
}
554
to.in6.sin6_port = htons(port); /* Spurious warning */
416
to.sin6_port = htons(port); /* Spurious warning */
555
417
556
to.in6.sin6_scope_id = (uint32_t)if_index;
418
to.sin6_scope_id = (uint32_t)if_index;
557
419
558
420
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
}
421
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
422
/* char addrstr[INET6_ADDRSTRLEN]; */
423
/* if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr, */
424
/* sizeof(addrstr)) == NULL){ */
425
/* perror("inet_ntop"); */
426
/* } else { */
427
/* fprintf(stderr, "Really connecting to: %s, port %d\n", */
428
/* addrstr, ntohs(to.sin6_port)); */
429
/* } */
570
430
}
571
431
572
ret = connect(tcp_sd, &to.in, sizeof(to));
432
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
573
433
if (ret < 0){
574
434
perror("connect");
575
435
return -1;
576
436
}
577
578
const char *out = mandos_protocol_version;
437
438
char *out = mandos_protocol_version;
579
439
written = 0;
580
440
while (true){
581
441
size_t out_size = strlen(out);
584
444
if (ret == -1){
585
445
perror("write");
586
446
retval = -1;
587
goto mandos_end;
447
goto end;
588
448
}
589
written += (size_t)ret;
449
written += ret;
590
450
if(written < out_size){
591
451
continue;
592
452
} else {
598
458
}
599
459
}
600
460
}
461
462
ret = initgnutls (&es);
463
if (ret != 0){
464
retval = -1;
465
return -1;
466
}
467
468
gnutls_transport_set_ptr (es.session,
469
(gnutls_transport_ptr_t) tcp_sd);
601
470
602
471
if(debug){
603
472
fprintf(stderr, "Establishing TLS session with %s\n", ip);
604
473
}
605
474
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);
475
ret = gnutls_handshake (es.session);
611
476
612
477
if (ret != GNUTLS_E_SUCCESS){
613
478
if(debug){
614
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
479
fprintf(stderr, "\n*** Handshake failed ***\n");
615
480
gnutls_perror (ret);
616
481
}
617
482
retval = -1;
618
goto mandos_end;
483
goto exit;
619
484
}
620
485
621
/* Read OpenPGP packet that contains the wanted password */
486
//Retrieve OpenPGP packet that contains the wanted password
622
487
623
488
if(debug){
624
489
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
625
490
ip);
626
491
}
627
492
628
493
while(true){
629
buffer_capacity = adjustbuffer(&buffer, buffer_length,
630
buffer_capacity);
494
buffer_capacity = adjustbuffer(buffer, buffer_length, buffer_capacity);
631
495
if (buffer_capacity == 0){
632
496
perror("adjustbuffer");
633
497
retval = -1;
634
goto mandos_end;
498
goto exit;
635
499
}
636
500
637
ret = gnutls_record_recv(session, buffer+buffer_length,
638
BUFFER_SIZE);
501
ret = gnutls_record_recv
502
(es.session, buffer+buffer_length, BUFFER_SIZE);
639
503
if (ret == 0){
640
504
break;
641
505
}
645
509
case GNUTLS_E_AGAIN:
646
510
break;
647
511
case GNUTLS_E_REHANDSHAKE:
648
do{
649
ret = gnutls_handshake (session);
650
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
512
ret = gnutls_handshake (es.session);
651
513
if (ret < 0){
652
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
514
fprintf(stderr, "\n*** Handshake failed ***\n");
653
515
gnutls_perror (ret);
654
516
retval = -1;
655
goto mandos_end;
517
goto exit;
656
518
}
657
519
break;
658
520
default:
659
521
fprintf(stderr, "Unknown error while reading data from"
660
" encrypted session with Mandos server\n");
522
" encrypted session with mandos server\n");
661
523
retval = -1;
662
gnutls_bye (session, GNUTLS_SHUT_RDWR);
663
goto mandos_end;
524
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
525
goto exit;
664
526
}
665
527
} else {
666
528
buffer_length += (size_t) ret;
667
529
}
668
530
}
669
531
670
if(debug){
671
fprintf(stderr, "Closing TLS session\n");
672
}
673
674
gnutls_bye (session, GNUTLS_SHUT_RDWR);
675
676
532
if (buffer_length > 0){
677
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
533
decrypted_buffer_size = pgp_packet_decrypt(buffer,
678
534
buffer_length,
679
&decrypted_buffer);
535
&decrypted_buffer,
536
certdir);
680
537
if (decrypted_buffer_size >= 0){
681
538
written = 0;
682
539
while(written < (size_t) decrypted_buffer_size){
697
554
} else {
698
555
retval = -1;
699
556
}
700
} else {
701
retval = -1;
702
}
703
704
/* Shutdown procedure */
705
706
mandos_end:
557
}
558
559
//shutdown procedure
560
561
if(debug){
562
fprintf(stderr, "Closing TLS session\n");
563
}
564
707
565
free(buffer);
708
ret = TEMP_FAILURE_RETRY(close(tcp_sd));
709
if(ret == -1){
710
perror("close");
711
}
712
gnutls_deinit (session);
566
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
567
exit:
568
close(tcp_sd);
569
gnutls_deinit (es.session);
570
gnutls_certificate_free_credentials (es.cred);
571
gnutls_global_deinit ();
713
572
return retval;
714
573
}
715
574
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) {
575
static void resolve_callback( AvahiSServiceResolver *r,
576
AvahiIfIndex interface,
577
AVAHI_GCC_UNUSED AvahiProtocol protocol,
578
AvahiResolverEvent event,
579
const char *name,
580
const char *type,
581
const char *domain,
582
const char *host_name,
583
const AvahiAddress *address,
584
uint16_t port,
585
AVAHI_GCC_UNUSED AvahiStringList *txt,
586
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
587
AVAHI_GCC_UNUSED void* userdata) {
730
588
mandos_context *mc = userdata;
731
assert(r);
589
assert(r); /* Spurious warning */
732
590
733
591
/* Called whenever a service has been resolved successfully or
734
592
timed out */
736
594
switch (event) {
737
595
default:
738
596
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,
597
fprintf(stderr, "(Resolver) Failed to resolve service '%s' of"
598
" type '%s' in domain '%s': %s\n", name, type, domain,
741
599
avahi_strerror(avahi_server_errno(mc->server)));
742
600
break;
743
601
746
604
char ip[AVAHI_ADDRESS_STR_MAX];
747
605
avahi_address_snprint(ip, sizeof(ip), address);
748
606
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);
607
fprintf(stderr, "Mandos server \"%s\" found on %s (%s) on"
608
" port %d\n", name, host_name, ip, port);
752
609
}
753
610
int ret = start_mandos_communication(ip, port, interface, mc);
754
611
if (ret == 0){
755
avahi_simple_poll_quit(mc->simple_poll);
612
exit(EXIT_SUCCESS);
756
613
}
757
614
}
758
615
}
766
623
const char *name,
767
624
const char *type,
768
625
const char *domain,
769
AVAHI_GCC_UNUSED AvahiLookupResultFlags
770
flags,
626
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
771
627
void* userdata) {
772
628
mandos_context *mc = userdata;
773
assert(b);
629
assert(b); /* Spurious warning */
774
630
775
631
/* Called whenever a new services becomes available on the LAN or
776
632
is removed from the LAN */
778
634
switch (event) {
779
635
default:
780
636
case AVAHI_BROWSER_FAILURE:
781
782
fprintf(stderr, "(Avahi browser) %s\n",
637
638
fprintf(stderr, "(Browser) %s\n",
783
639
avahi_strerror(avahi_server_errno(mc->server)));
784
640
avahi_simple_poll_quit(mc->simple_poll);
785
641
return;
786
642
787
643
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,
644
/* We ignore the returned resolver object. In the callback
645
function we free it. If the server is terminated before
646
the callback function is called the server will free
647
the resolver for us. */
648
649
if (!(avahi_s_service_resolver_new(mc->server, interface, protocol, name,
650
type, domain,
795
651
AVAHI_PROTO_INET6, 0,
796
652
resolve_callback, mc)))
797
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
798
name, avahi_strerror(avahi_server_errno(mc->server)));
653
fprintf(stderr, "Failed to resolve service '%s': %s\n", name,
654
avahi_strerror(avahi_server_errno(s)));
799
655
break;
800
656
801
657
case AVAHI_BROWSER_REMOVE:
802
658
break;
803
659
804
660
case AVAHI_BROWSER_ALL_FOR_NOW:
805
661
case AVAHI_BROWSER_CACHE_EXHAUSTED:
806
if(debug){
807
fprintf(stderr, "No Mandos server found, still searching...\n");
808
}
809
662
break;
810
663
}
811
664
}
812
665
813
int main(int argc, char *argv[]){
666
/* Combines file name and path and returns the malloced new
667
string. some sane checks could/should be added */
668
static const char *combinepath(const char *first, const char *second){
669
size_t f_len = strlen(first);
670
size_t s_len = strlen(second);
671
char *tmp = malloc(f_len + s_len + 2);
672
if (tmp == NULL){
673
return NULL;
674
}
675
if(f_len > 0){
676
memcpy(tmp, first, f_len);
677
}
678
tmp[f_len] = '/';
679
if(s_len > 0){
680
memcpy(tmp + f_len + 1, second, s_len);
681
}
682
tmp[f_len + 1 + s_len] = '\0';
683
return tmp;
684
}
685
686
687
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
688
AvahiServerConfig config;
814
689
AvahiSServiceBrowser *sb = NULL;
815
690
int error;
816
691
int ret;
817
int exitcode = EXIT_SUCCESS;
692
int returncode = EXIT_SUCCESS;
818
693
const char *interface = "eth0";
819
694
struct ifreq network;
820
695
int sd;
821
uid_t uid;
822
gid_t gid;
823
696
char *connect_to = NULL;
824
char tempdir[] = "/tmp/mandosXXXXXX";
825
697
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
826
const char *seckey = PATHDIR "/" SECKEY;
827
const char *pubkey = PATHDIR "/" PUBKEY;
828
829
698
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;
699
.dh_bits = 2048, .priority = "SECURE256"};
834
700
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 */
701
while (true){
702
static struct option long_options[] = {
703
{"debug", no_argument, (int *)&debug, 1},
704
{"connect", required_argument, 0, 'C'},
705
{"interface", required_argument, 0, 'i'},
706
{"certdir", required_argument, 0, 'd'},
707
{"certkey", required_argument, 0, 'c'},
708
{"certfile", required_argument, 0, 'k'},
709
{"dh_bits", required_argument, 0, 'D'},
710
{"priority", required_argument, 0, 'p'},
711
{0, 0, 0, 0} };
712
713
int option_index = 0;
714
ret = getopt_long (argc, argv, "i:", long_options,
715
&option_index);
716
717
if (ret == -1){
718
break;
719
}
720
721
switch(ret){
722
case 0:
723
break;
724
case 'i':
725
interface = optarg;
726
break;
727
case 'C':
728
connect_to = optarg;
729
break;
730
case 'd':
731
certdir = optarg;
732
break;
733
case 'c':
734
certfile = optarg;
735
break;
736
case 'k':
737
certkey = optarg;
738
break;
739
case 'D':
740
{
741
long int tmp;
889
742
errno = 0;
890
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
891
if (errno){
743
tmp = strtol(optarg, NULL, 10);
744
if (errno == ERANGE){
892
745
perror("strtol");
893
746
exit(EXIT_FAILURE);
894
747
}
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;
748
mc.dh_bits = tmp;
905
749
}
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;
750
break;
751
case 'p':
752
mc.priority = optarg;
753
break;
754
default:
755
exit(EXIT_FAILURE);
918
756
}
919
757
}
920
758
921
ret = init_gnutls_global(&mc, pubkey, seckey);
922
if (ret == -1){
923
fprintf(stderr, "init_gnutls_global failed\n");
924
exitcode = EXIT_FAILURE;
925
goto end;
926
} else {
927
gnutls_initalized = true;
759
certfile = combinepath(certdir, certfile);
760
if (certfile == NULL){
761
perror("combinepath");
762
returncode = EXIT_FAILURE;
763
goto exit;
928
764
}
929
765
930
if(mkdtemp(tempdir) == NULL){
931
perror("mkdtemp");
932
tempdir[0] = '\0';
933
goto end;
934
}
935
936
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
937
fprintf(stderr, "pgpme_initalized failed\n");
938
exitcode = EXIT_FAILURE;
939
goto end;
940
} else {
941
pgpme_initalized = true;
942
}
943
944
/* If the interface is down, bring it up */
945
{
946
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
947
if(sd < 0) {
948
perror("socket");
949
exitcode = EXIT_FAILURE;
950
goto end;
951
}
952
strcpy(network.ifr_name, interface);
953
ret = ioctl(sd, SIOCGIFFLAGS, &network);
954
if(ret == -1){
955
perror("ioctl SIOCGIFFLAGS");
956
exitcode = EXIT_FAILURE;
957
goto end;
958
}
959
if((network.ifr_flags & IFF_UP) == 0){
960
network.ifr_flags |= IFF_UP;
961
ret = ioctl(sd, SIOCSIFFLAGS, &network);
962
if(ret == -1){
963
perror("ioctl SIOCSIFFLAGS");
964
exitcode = EXIT_FAILURE;
965
goto end;
966
}
967
}
968
ret = TEMP_FAILURE_RETRY(close(sd));
969
if(ret == -1){
970
perror("close");
971
}
972
}
973
974
uid = getuid();
975
gid = getgid();
976
977
ret = setuid(uid);
978
if (ret == -1){
979
perror("setuid");
980
}
981
982
setgid(gid);
983
if (ret == -1){
984
perror("setgid");
766
certkey = combinepath(certdir, certkey);
767
if (certkey == NULL){
768
perror("combinepath");
769
returncode = EXIT_FAILURE;
770
goto exit;
985
771
}
986
772
987
773
if_index = (AvahiIfIndex) if_nametoindex(interface);
996
782
char *address = strrchr(connect_to, ':');
997
783
if(address == NULL){
998
784
fprintf(stderr, "No colon in address\n");
999
exitcode = EXIT_FAILURE;
1000
goto end;
785
exit(EXIT_FAILURE);
1001
786
}
1002
787
errno = 0;
1003
788
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
1004
789
if(errno){
1005
790
perror("Bad port number");
1006
exitcode = EXIT_FAILURE;
1007
goto end;
791
exit(EXIT_FAILURE);
1008
792
}
1009
793
*address = '\0';
1010
794
address = connect_to;
1011
ret = start_mandos_communication(address, port, if_index, &mc);
795
ret = start_mandos_communication(address, port, if_index);
1012
796
if(ret < 0){
1013
exitcode = EXIT_FAILURE;
797
exit(EXIT_FAILURE);
1014
798
} else {
1015
exitcode = EXIT_SUCCESS;
1016
}
1017
goto end;
1018
}
799
exit(EXIT_SUCCESS);
800
}
801
}
802
803
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
804
if(sd < 0) {
805
perror("socket");
806
returncode = EXIT_FAILURE;
807
goto exit;
808
}
809
strcpy(network.ifr_name, interface);
810
ret = ioctl(sd, SIOCGIFFLAGS, &network);
811
if(ret == -1){
812
813
perror("ioctl SIOCGIFFLAGS");
814
returncode = EXIT_FAILURE;
815
goto exit;
816
}
817
if((network.ifr_flags & IFF_UP) == 0){
818
network.ifr_flags |= IFF_UP;
819
ret = ioctl(sd, SIOCSIFFLAGS, &network);
820
if(ret == -1){
821
perror("ioctl SIOCSIFFLAGS");
822
returncode = EXIT_FAILURE;
823
goto exit;
824
}
825
}
826
close(sd);
1019
827
1020
828
if (not debug){
1021
829
avahi_set_log_function(empty_log);
1022
830
}
1023
831
1024
/* Initialize the pseudo-RNG for Avahi */
832
/* Initialize the psuedo-RNG */
1025
833
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",
834
835
/* Allocate main loop object */
836
if (!(mc.simple_poll = avahi_simple_poll_new())) {
837
fprintf(stderr, "Failed to create simple poll object.\n");
838
returncode = EXIT_FAILURE;
839
goto exit;
840
}
841
842
/* Do not publish any local records */
843
avahi_server_config_init(&config);
844
config.publish_hinfo = 0;
845
config.publish_addresses = 0;
846
config.publish_workstation = 0;
847
config.publish_domain = 0;
848
849
/* Allocate a new server */
850
mc.server = avahi_server_new(avahi_simple_poll_get(simple_poll),
851
&config, NULL, NULL, &error);
852
853
/* Free the configuration data */
854
avahi_server_config_free(&config);
855
856
/* Check if creating the server object succeeded */
857
if (!mc.server) {
858
fprintf(stderr, "Failed to create server: %s\n",
1057
859
avahi_strerror(error));
1058
exitcode = EXIT_FAILURE;
1059
goto end;
860
returncode = EXIT_FAILURE;
861
goto exit;
1060
862
}
1061
863
1062
/* Create the Avahi service browser */
864
/* Create the service browser */
1063
865
sb = avahi_s_service_browser_new(mc.server, if_index,
1064
866
AVAHI_PROTO_INET6,
1065
867
"_mandos._tcp", NULL, 0,
1066
868
browse_callback, &mc);
1067
if (sb == NULL) {
869
if (!sb) {
1068
870
fprintf(stderr, "Failed to create service browser: %s\n",
1069
871
avahi_strerror(avahi_server_errno(mc.server)));
1070
exitcode = EXIT_FAILURE;
1071
goto end;
872
returncode = EXIT_FAILURE;
873
goto exit;
1072
874
}
1073
875
1074
876
/* Run the main loop */
1075
877
1076
878
if (debug){
1077
fprintf(stderr, "Starting Avahi loop search\n");
879
fprintf(stderr, "Starting avahi loop search\n");
1078
880
}
1079
881
1080
avahi_simple_poll_loop(mc.simple_poll);
1081
1082
end:
1083
882
avahi_simple_poll_loop(simple_poll);
883
884
exit:
885
1084
886
if (debug){
1085
887
fprintf(stderr, "%s exiting\n", argv[0]);
1086
888
}
1087
889
1088
890
/* Cleanup things */
1089
if (sb != NULL)
891
if (sb)
1090
892
avahi_s_service_browser_free(sb);
1091
893
1092
if (mc.server != NULL)
894
if (mc.server)
1093
895
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;
896
897
if (simple_poll)
898
avahi_simple_poll_free(simple_poll);
899
free(certfile);
900
free(certkey);
901
902
return returncode;
1144
903
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0