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- Committer: Teddy Hogeborn
- Date: 2008-07-31 19:51:44 UTC
- mfrom: (24.1.5 mandos)
- Revision ID: teddy@fukt.bsnet.se-20080731195144-yb37wz2sr1e6b3m4
Merge.
- files added:
- ca.pem
- files removed:
- .bzr-builddeb
- debian
- debian/po
- files renamed:
- plugin-runner.c => plugbasedclient.c
- plugins.d/mandos-client.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
9
9
* "browse_callback", and parts of "main".
10
10
*
11
11
* Everything else is
12
* Copyright © 2008,2009 Teddy Hogeborn
13
* Copyright © 2008,2009 Björn Påhlsson
12
* Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
14
13
*
15
14
* This program is free software: you can redistribute it and/or
16
15
* modify it under the terms of the GNU General Public License as
26
25
* along with this program. If not, see
27
26
* <http://www.gnu.org/licenses/>.
28
27
*
29
* 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/>.
30
30
*/
31
31
32
32
/* Needed by GPGME, specifically gpgme_data_seek() */
33
33
#define _LARGEFILE_SOURCE
34
34
#define _FILE_OFFSET_BITS 64
35
35
36
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
37
38
#include <stdio.h> /* fprintf(), stderr, fwrite(),
39
stdout, ferror() */
40
#include <stdint.h> /* uint16_t, uint32_t */
41
#include <stddef.h> /* NULL, size_t, ssize_t */
42
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
43
srand() */
44
#include <stdbool.h> /* bool, true */
45
#include <string.h> /* memset(), strcmp(), strlen(),
46
strerror(), asprintf(), strcpy() */
47
#include <sys/ioctl.h> /* ioctl */
48
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
49
sockaddr_in6, PF_INET6,
50
SOCK_STREAM, INET6_ADDRSTRLEN,
51
uid_t, gid_t, open(), opendir(), DIR */
52
#include <sys/stat.h> /* open() */
53
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
54
struct in6_addr, inet_pton(),
55
connect() */
56
#include <fcntl.h> /* open() */
57
#include <dirent.h> /* opendir(), struct dirent, readdir() */
58
#include <inttypes.h> /* PRIu16 */
59
#include <assert.h> /* assert() */
60
#include <errno.h> /* perror(), errno */
61
#include <time.h> /* time() */
62
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
63
SIOCSIFFLAGS, if_indextoname(),
64
if_nametoindex(), IF_NAMESIZE */
65
#include <netinet/in.h>
66
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
67
getuid(), getgid(), setuid(),
68
setgid() */
69
#include <arpa/inet.h> /* inet_pton(), htons */
70
#include <iso646.h> /* not, and */
71
#include <argp.h> /* struct argp_option, error_t, struct
72
argp_state, struct argp,
73
argp_parse(), ARGP_KEY_ARG,
74
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
75
76
/* Avahi */
77
/* All Avahi types, constants and functions
78
Avahi*, avahi_*,
79
AVAHI_* */
36
#include <stdio.h>
37
#include <assert.h>
38
#include <stdlib.h>
39
#include <time.h>
40
#include <net/if.h> /* if_nametoindex */
41
80
42
#include <avahi-core/core.h>
81
43
#include <avahi-core/lookup.h>
82
44
#include <avahi-core/log.h>
84
46
#include <avahi-common/malloc.h>
85
47
#include <avahi-common/error.h>
86
48
87
/* GnuTLS */
88
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
89
functions:
90
gnutls_*
91
init_gnutls_session(),
92
GNUTLS_* */
93
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
94
GNUTLS_OPENPGP_FMT_BASE64 */
95
96
/* GPGME */
97
#include <gpgme.h> /* All GPGME types, constants and
98
functions:
99
gpgme_*
100
GPGME_PROTOCOL_OpenPGP,
101
GPG_ERR_NO_* */
49
//mandos client part
50
#include <sys/types.h> /* socket(), inet_pton() */
51
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
52
struct in6_addr, inet_pton() */
53
#include <gnutls/gnutls.h> /* All GnuTLS stuff */
54
#include <gnutls/openpgp.h> /* GnuTLS with openpgp stuff */
55
56
#include <unistd.h> /* close() */
57
#include <netinet/in.h>
58
#include <stdbool.h> /* true */
59
#include <string.h> /* memset */
60
#include <arpa/inet.h> /* inet_pton() */
61
#include <iso646.h> /* not */
62
63
// gpgme
64
#include <errno.h> /* perror() */
65
#include <gpgme.h>
66
67
// getopt long
68
#include <getopt.h>
102
69
103
70
#define BUFFER_SIZE 256
71
#define DH_BITS 1024
104
72
105
#define PATHDIR "/conf/conf.d/mandos"
106
#define SECKEY "seckey.txt"
107
#define PUBKEY "pubkey.txt"
73
const char *certdir = "/conf/conf.d/cryptkeyreq/";
74
const char *certfile = "openpgp-client.txt";
75
const char *certkey = "openpgp-client-key.txt";
108
76
109
77
bool debug = false;
110
static const char mandos_protocol_version[] = "1";
111
const char *argp_program_version = "mandos-client " VERSION;
112
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
113
78
114
/* Used for passing in values through the Avahi callback functions */
115
79
typedef struct {
116
AvahiSimplePoll *simple_poll;
117
AvahiServer *server;
80
gnutls_session_t session;
118
81
gnutls_certificate_credentials_t cred;
119
unsigned int dh_bits;
120
82
gnutls_dh_params_t dh_params;
121
const char *priority;
83
} encrypted_session;
84
85
86
ssize_t pgp_packet_decrypt (char *packet, size_t packet_size,
87
char **new_packet, const char *homedir){
88
gpgme_data_t dh_crypto, dh_plain;
122
89
gpgme_ctx_t ctx;
123
} mandos_context;
124
125
/*
126
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
127
* "buffer_capacity" is how much is currently allocated,
128
* "buffer_length" is how much is already used.
129
*/
130
size_t adjustbuffer(char **buffer, size_t buffer_length,
131
size_t buffer_capacity){
132
if (buffer_length + BUFFER_SIZE > buffer_capacity){
133
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
134
if (buffer == NULL){
135
return 0;
136
}
137
buffer_capacity += BUFFER_SIZE;
138
}
139
return buffer_capacity;
140
}
141
142
/*
143
* Initialize GPGME.
144
*/
145
static bool init_gpgme(mandos_context *mc, const char *seckey,
146
const char *pubkey, const char *tempdir){
147
int ret;
148
90
gpgme_error_t rc;
91
ssize_t ret;
92
ssize_t new_packet_capacity = 0;
93
ssize_t new_packet_length = 0;
149
94
gpgme_engine_info_t engine_info;
150
151
152
/*
153
* Helper function to insert pub and seckey to the enigne keyring.
154
*/
155
bool import_key(const char *filename){
156
int fd;
157
gpgme_data_t pgp_data;
158
159
fd = (int)TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
160
if(fd == -1){
161
perror("open");
162
return false;
163
}
164
165
rc = gpgme_data_new_from_fd(&pgp_data, fd);
166
if (rc != GPG_ERR_NO_ERROR){
167
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
168
gpgme_strsource(rc), gpgme_strerror(rc));
169
return false;
170
}
171
172
rc = gpgme_op_import(mc->ctx, pgp_data);
173
if (rc != GPG_ERR_NO_ERROR){
174
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
175
gpgme_strsource(rc), gpgme_strerror(rc));
176
return false;
177
}
178
179
ret = (int)TEMP_FAILURE_RETRY(close(fd));
180
if(ret == -1){
181
perror("close");
182
}
183
gpgme_data_release(pgp_data);
184
return true;
185
}
186
95
187
96
if (debug){
188
fprintf(stderr, "Initialize gpgme\n");
97
fprintf(stderr, "Trying to decrypt OpenPGP packet\n");
189
98
}
190
99
191
100
/* Init GPGME */
194
103
if (rc != GPG_ERR_NO_ERROR){
195
104
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
196
105
gpgme_strsource(rc), gpgme_strerror(rc));
197
return false;
106
return -1;
198
107
}
199
108
200
/* Set GPGME home directory for the OpenPGP engine only */
109
/* Set GPGME home directory */
201
110
rc = gpgme_get_engine_info (&engine_info);
202
111
if (rc != GPG_ERR_NO_ERROR){
203
112
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
204
113
gpgme_strsource(rc), gpgme_strerror(rc));
205
return false;
114
return -1;
206
115
}
207
116
while(engine_info != NULL){
208
117
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
209
118
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
210
engine_info->file_name, tempdir);
119
engine_info->file_name, homedir);
211
120
break;
212
121
}
213
122
engine_info = engine_info->next;
214
123
}
215
124
if(engine_info == NULL){
216
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
217
return false;
218
}
219
220
/* Create new GPGME "context" */
221
rc = gpgme_new(&(mc->ctx));
222
if (rc != GPG_ERR_NO_ERROR){
223
fprintf(stderr, "bad gpgme_new: %s: %s\n",
224
gpgme_strsource(rc), gpgme_strerror(rc));
225
return false;
226
}
227
228
if (not import_key(pubkey) or not import_key(seckey)){
229
return false;
230
}
231
232
return true;
233
}
234
235
/*
236
* Decrypt OpenPGP data.
237
* Returns -1 on error
238
*/
239
static ssize_t pgp_packet_decrypt (const mandos_context *mc,
240
const char *cryptotext,
241
size_t crypto_size,
242
char **plaintext){
243
gpgme_data_t dh_crypto, dh_plain;
244
gpgme_error_t rc;
245
ssize_t ret;
246
size_t plaintext_capacity = 0;
247
ssize_t plaintext_length = 0;
248
249
if (debug){
250
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
251
}
252
253
/* Create new GPGME data buffer from memory cryptotext */
254
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
255
0);
125
fprintf(stderr, "Could not set home dir to %s\n", homedir);
126
return -1;
127
}
128
129
/* Create new GPGME data buffer from packet buffer */
130
rc = gpgme_data_new_from_mem(&dh_crypto, packet, packet_size, 0);
256
131
if (rc != GPG_ERR_NO_ERROR){
257
132
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
258
133
gpgme_strsource(rc), gpgme_strerror(rc));
264
139
if (rc != GPG_ERR_NO_ERROR){
265
140
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
266
141
gpgme_strsource(rc), gpgme_strerror(rc));
267
gpgme_data_release(dh_crypto);
268
return -1;
269
}
270
271
/* Decrypt data from the cryptotext data buffer to the plaintext
272
data buffer */
273
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
142
return -1;
143
}
144
145
/* Create new GPGME "context" */
146
rc = gpgme_new(&ctx);
147
if (rc != GPG_ERR_NO_ERROR){
148
fprintf(stderr, "bad gpgme_new: %s: %s\n",
149
gpgme_strsource(rc), gpgme_strerror(rc));
150
return -1;
151
}
152
153
/* Decrypt data from the FILE pointer to the plaintext data
154
buffer */
155
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
274
156
if (rc != GPG_ERR_NO_ERROR){
275
157
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
276
158
gpgme_strsource(rc), gpgme_strerror(rc));
277
plaintext_length = -1;
278
if (debug){
279
gpgme_decrypt_result_t result;
280
result = gpgme_op_decrypt_result(mc->ctx);
281
if (result == NULL){
282
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
283
} else {
284
fprintf(stderr, "Unsupported algorithm: %s\n",
285
result->unsupported_algorithm);
286
fprintf(stderr, "Wrong key usage: %u\n",
287
result->wrong_key_usage);
288
if(result->file_name != NULL){
289
fprintf(stderr, "File name: %s\n", result->file_name);
290
}
291
gpgme_recipient_t recipient;
292
recipient = result->recipients;
293
if(recipient){
294
while(recipient != NULL){
295
fprintf(stderr, "Public key algorithm: %s\n",
296
gpgme_pubkey_algo_name(recipient->pubkey_algo));
297
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
298
fprintf(stderr, "Secret key available: %s\n",
299
recipient->status == GPG_ERR_NO_SECKEY
300
? "No" : "Yes");
301
recipient = recipient->next;
302
}
159
return -1;
160
}
161
162
if(debug){
163
fprintf(stderr, "Decryption of OpenPGP packet succeeded\n");
164
}
165
166
if (debug){
167
gpgme_decrypt_result_t result;
168
result = gpgme_op_decrypt_result(ctx);
169
if (result == NULL){
170
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
171
} else {
172
fprintf(stderr, "Unsupported algorithm: %s\n",
173
result->unsupported_algorithm);
174
fprintf(stderr, "Wrong key usage: %d\n",
175
result->wrong_key_usage);
176
if(result->file_name != NULL){
177
fprintf(stderr, "File name: %s\n", result->file_name);
178
}
179
gpgme_recipient_t recipient;
180
recipient = result->recipients;
181
if(recipient){
182
while(recipient != NULL){
183
fprintf(stderr, "Public key algorithm: %s\n",
184
gpgme_pubkey_algo_name(recipient->pubkey_algo));
185
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
186
fprintf(stderr, "Secret key available: %s\n",
187
recipient->status == GPG_ERR_NO_SECKEY
188
? "No" : "Yes");
189
recipient = recipient->next;
303
190
}
304
191
}
305
192
}
306
goto decrypt_end;
307
193
}
308
194
309
if(debug){
310
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
311
}
195
/* Delete the GPGME FILE pointer cryptotext data buffer */
196
gpgme_data_release(dh_crypto);
312
197
313
198
/* Seek back to the beginning of the GPGME plaintext data buffer */
314
199
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
315
perror("gpgme_data_seek");
316
plaintext_length = -1;
317
goto decrypt_end;
200
perror("pgpme_data_seek");
318
201
}
319
202
320
*plaintext = NULL;
203
*new_packet = 0;
321
204
while(true){
322
plaintext_capacity = adjustbuffer(plaintext,
323
(size_t)plaintext_length,
324
plaintext_capacity);
325
if (plaintext_capacity == 0){
326
perror("adjustbuffer");
327
plaintext_length = -1;
328
goto decrypt_end;
205
if (new_packet_length + BUFFER_SIZE > new_packet_capacity){
206
*new_packet = realloc(*new_packet,
207
(unsigned int)new_packet_capacity
208
+ BUFFER_SIZE);
209
if (*new_packet == NULL){
210
perror("realloc");
211
return -1;
212
}
213
new_packet_capacity += BUFFER_SIZE;
329
214
}
330
215
331
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
216
ret = gpgme_data_read(dh_plain, *new_packet + new_packet_length,
332
217
BUFFER_SIZE);
333
218
/* Print the data, if any */
334
219
if (ret == 0){
335
/* EOF */
336
220
break;
337
221
}
338
222
if(ret < 0){
339
223
perror("gpgme_data_read");
340
plaintext_length = -1;
341
goto decrypt_end;
342
}
343
plaintext_length += ret;
344
}
345
346
if(debug){
347
fprintf(stderr, "Decrypted password is: ");
348
for(ssize_t i = 0; i < plaintext_length; i++){
349
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
350
}
351
fprintf(stderr, "\n");
352
}
353
354
decrypt_end:
355
356
/* Delete the GPGME cryptotext data buffer */
357
gpgme_data_release(dh_crypto);
224
return -1;
225
}
226
new_packet_length += ret;
227
}
228
229
/* FIXME: check characters before printing to screen so to not print
230
terminal control characters */
231
/* if(debug){ */
232
/* fprintf(stderr, "decrypted password is: "); */
233
/* fwrite(*new_packet, 1, new_packet_length, stderr); */
234
/* fprintf(stderr, "\n"); */
235
/* } */
358
236
359
237
/* Delete the GPGME plaintext data buffer */
360
238
gpgme_data_release(dh_plain);
361
return plaintext_length;
239
return new_packet_length;
362
240
}
363
241
364
242
static const char * safer_gnutls_strerror (int value) {
365
const char *ret = gnutls_strerror (value); /* Spurious warning */
243
const char *ret = gnutls_strerror (value);
366
244
if (ret == NULL)
367
245
ret = "(unknown)";
368
246
return ret;
369
247
}
370
248
371
/* GnuTLS log function callback */
372
static void debuggnutls(__attribute__((unused)) int level,
373
const char* string){
374
fprintf(stderr, "GnuTLS: %s", string);
249
void debuggnutls(__attribute__((unused)) int level,
250
const char* string){
251
fprintf(stderr, "%s", string);
375
252
}
376
253
377
static int init_gnutls_global(mandos_context *mc,
378
const char *pubkeyfilename,
379
const char *seckeyfilename){
254
int initgnutls(encrypted_session *es){
255
const char *err;
380
256
int ret;
381
257
382
258
if(debug){
383
259
fprintf(stderr, "Initializing GnuTLS\n");
384
260
}
385
386
ret = gnutls_global_init();
387
if (ret != GNUTLS_E_SUCCESS) {
388
fprintf (stderr, "GnuTLS global_init: %s\n",
389
safer_gnutls_strerror(ret));
261
262
if ((ret = gnutls_global_init ())
263
!= GNUTLS_E_SUCCESS) {
264
fprintf (stderr, "global_init: %s\n", safer_gnutls_strerror(ret));
390
265
return -1;
391
266
}
392
267
393
268
if (debug){
394
/* "Use a log level over 10 to enable all debugging options."
395
* - GnuTLS manual
396
*/
397
269
gnutls_global_set_log_level(11);
398
270
gnutls_global_set_log_function(debuggnutls);
399
271
}
400
272
401
/* OpenPGP credentials */
402
gnutls_certificate_allocate_credentials(&mc->cred);
403
if (ret != GNUTLS_E_SUCCESS){
404
fprintf (stderr, "GnuTLS memory error: %s\n", /* Spurious
405
warning */
273
/* openpgp credentials */
274
if ((ret = gnutls_certificate_allocate_credentials (&es->cred))
275
!= GNUTLS_E_SUCCESS) {
276
fprintf (stderr, "memory error: %s\n",
406
277
safer_gnutls_strerror(ret));
407
gnutls_global_deinit ();
408
278
return -1;
409
279
}
410
280
411
281
if(debug){
412
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
413
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
414
seckeyfilename);
282
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
283
" and keyfile %s as GnuTLS credentials\n", certfile,
284
certkey);
415
285
}
416
286
417
287
ret = gnutls_certificate_set_openpgp_key_file
418
(mc->cred, pubkeyfilename, seckeyfilename,
419
GNUTLS_OPENPGP_FMT_BASE64);
288
(es->cred, certfile, certkey, GNUTLS_OPENPGP_FMT_BASE64);
420
289
if (ret != GNUTLS_E_SUCCESS) {
421
fprintf(stderr,
422
"Error[%d] while reading the OpenPGP key pair ('%s',"
423
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
424
fprintf(stderr, "The GnuTLS error is: %s\n",
290
fprintf
291
(stderr, "Error[%d] while reading the OpenPGP key pair ('%s',"
292
" '%s')\n",
293
ret, certfile, certkey);
294
fprintf(stdout, "The Error is: %s\n",
425
295
safer_gnutls_strerror(ret));
426
goto globalfail;
427
}
428
429
/* GnuTLS server initialization */
430
ret = gnutls_dh_params_init(&mc->dh_params);
431
if (ret != GNUTLS_E_SUCCESS) {
432
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
433
" %s\n", safer_gnutls_strerror(ret));
434
goto globalfail;
435
}
436
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
437
if (ret != GNUTLS_E_SUCCESS) {
438
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
439
safer_gnutls_strerror(ret));
440
goto globalfail;
441
}
442
443
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
444
445
return 0;
446
447
globalfail:
448
449
gnutls_certificate_free_credentials(mc->cred);
450
gnutls_global_deinit();
451
gnutls_dh_params_deinit(mc->dh_params);
452
return -1;
453
}
454
455
static int init_gnutls_session(mandos_context *mc,
456
gnutls_session_t *session){
457
int ret;
458
/* GnuTLS session creation */
459
ret = gnutls_init(session, GNUTLS_SERVER);
460
if (ret != GNUTLS_E_SUCCESS){
296
return -1;
297
}
298
299
//GnuTLS server initialization
300
if ((ret = gnutls_dh_params_init (&es->dh_params))
301
!= GNUTLS_E_SUCCESS) {
302
fprintf (stderr, "Error in dh parameter initialization: %s\n",
303
safer_gnutls_strerror(ret));
304
return -1;
305
}
306
307
if ((ret = gnutls_dh_params_generate2 (es->dh_params, DH_BITS))
308
!= GNUTLS_E_SUCCESS) {
309
fprintf (stderr, "Error in prime generation: %s\n",
310
safer_gnutls_strerror(ret));
311
return -1;
312
}
313
314
gnutls_certificate_set_dh_params (es->cred, es->dh_params);
315
316
// GnuTLS session creation
317
if ((ret = gnutls_init (&es->session, GNUTLS_SERVER))
318
!= GNUTLS_E_SUCCESS){
461
319
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
462
320
safer_gnutls_strerror(ret));
463
321
}
464
322
465
{
466
const char *err;
467
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
468
if (ret != GNUTLS_E_SUCCESS) {
469
fprintf(stderr, "Syntax error at: %s\n", err);
470
fprintf(stderr, "GnuTLS error: %s\n",
471
safer_gnutls_strerror(ret));
472
gnutls_deinit (*session);
473
return -1;
474
}
323
if ((ret = gnutls_priority_set_direct (es->session, "NORMAL", &err))
324
!= GNUTLS_E_SUCCESS) {
325
fprintf(stderr, "Syntax error at: %s\n", err);
326
fprintf(stderr, "GnuTLS error: %s\n",
327
safer_gnutls_strerror(ret));
328
return -1;
475
329
}
476
330
477
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
478
mc->cred);
479
if (ret != GNUTLS_E_SUCCESS) {
480
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
331
if ((ret = gnutls_credentials_set
332
(es->session, GNUTLS_CRD_CERTIFICATE, es->cred))
333
!= GNUTLS_E_SUCCESS) {
334
fprintf(stderr, "Error setting a credentials set: %s\n",
481
335
safer_gnutls_strerror(ret));
482
gnutls_deinit (*session);
483
336
return -1;
484
337
}
485
338
486
339
/* ignore client certificate if any. */
487
gnutls_certificate_server_set_request (*session,
340
gnutls_certificate_server_set_request (es->session,
488
341
GNUTLS_CERT_IGNORE);
489
342
490
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
343
gnutls_dh_set_prime_bits (es->session, DH_BITS);
491
344
492
345
return 0;
493
346
}
494
347
495
/* Avahi log function callback */
496
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
497
__attribute__((unused)) const char *txt){}
348
void empty_log(__attribute__((unused)) AvahiLogLevel level,
349
__attribute__((unused)) const char *txt){}
498
350
499
/* Called when a Mandos server is found */
500
static int start_mandos_communication(const char *ip, uint16_t port,
501
AvahiIfIndex if_index,
502
mandos_context *mc){
351
int start_mandos_communication(const char *ip, uint16_t port,
352
AvahiIfIndex if_index){
503
353
int ret, tcp_sd;
504
ssize_t sret;
505
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
354
struct sockaddr_in6 to;
355
encrypted_session es;
506
356
char *buffer = NULL;
507
357
char *decrypted_buffer;
508
358
size_t buffer_length = 0;
509
359
size_t buffer_capacity = 0;
510
360
ssize_t decrypted_buffer_size;
511
size_t written;
361
size_t written = 0;
512
362
int retval = 0;
513
363
char interface[IF_NAMESIZE];
514
gnutls_session_t session;
515
516
ret = init_gnutls_session (mc, &session);
517
if (ret != 0){
518
return -1;
519
}
520
364
521
365
if(debug){
522
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
523
"\n", ip, port);
366
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
367
ip, port);
524
368
}
525
369
526
370
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
529
373
return -1;
530
374
}
531
375
532
if(debug){
533
if(if_indextoname((unsigned int)if_index, interface) == NULL){
376
if(if_indextoname((unsigned int)if_index, interface) == NULL){
377
if(debug){
534
378
perror("if_indextoname");
535
return -1;
536
379
}
380
return -1;
381
}
382
383
if(debug){
537
384
fprintf(stderr, "Binding to interface %s\n", interface);
538
385
}
539
386
540
memset(&to, 0, sizeof(to));
541
to.in6.sin6_family = AF_INET6;
542
/* It would be nice to have a way to detect if we were passed an
543
IPv4 address here. Now we assume an IPv6 address. */
544
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
387
memset(&to,0,sizeof(to)); /* Spurious warning */
388
to.sin6_family = AF_INET6;
389
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
545
390
if (ret < 0 ){
546
391
perror("inet_pton");
547
392
return -1;
548
}
393
}
549
394
if(ret == 0){
550
395
fprintf(stderr, "Bad address: %s\n", ip);
551
396
return -1;
552
397
}
553
to.in6.sin6_port = htons(port); /* Spurious warning */
398
to.sin6_port = htons(port); /* Spurious warning */
554
399
555
to.in6.sin6_scope_id = (uint32_t)if_index;
400
to.sin6_scope_id = (uint32_t)if_index;
556
401
557
402
if(debug){
558
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
559
port);
560
char addrstr[INET6_ADDRSTRLEN] = "";
561
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
562
sizeof(addrstr)) == NULL){
563
perror("inet_ntop");
564
} else {
565
if(strcmp(addrstr, ip) != 0){
566
fprintf(stderr, "Canonical address form: %s\n", addrstr);
567
}
568
}
403
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
404
/* char addrstr[INET6_ADDRSTRLEN]; */
405
/* if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr, */
406
/* sizeof(addrstr)) == NULL){ */
407
/* perror("inet_ntop"); */
408
/* } else { */
409
/* fprintf(stderr, "Really connecting to: %s, port %d\n", */
410
/* addrstr, ntohs(to.sin6_port)); */
411
/* } */
569
412
}
570
413
571
ret = connect(tcp_sd, &to.in, sizeof(to));
414
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
572
415
if (ret < 0){
573
416
perror("connect");
574
417
return -1;
575
418
}
576
419
577
const char *out = mandos_protocol_version;
578
written = 0;
579
while (true){
580
size_t out_size = strlen(out);
581
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
582
out_size - written));
583
if (ret == -1){
584
perror("write");
585
retval = -1;
586
goto mandos_end;
587
}
588
written += (size_t)ret;
589
if(written < out_size){
590
continue;
591
} else {
592
if (out == mandos_protocol_version){
593
written = 0;
594
out = "\r\n";
595
} else {
596
break;
597
}
598
}
420
ret = initgnutls (&es);
421
if (ret != 0){
422
retval = -1;
423
return -1;
599
424
}
600
425
426
gnutls_transport_set_ptr (es.session,
427
(gnutls_transport_ptr_t) tcp_sd);
428
601
429
if(debug){
602
430
fprintf(stderr, "Establishing TLS session with %s\n", ip);
603
431
}
604
432
605
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
606
607
do{
608
ret = gnutls_handshake (session);
609
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
433
ret = gnutls_handshake (es.session);
610
434
611
435
if (ret != GNUTLS_E_SUCCESS){
612
436
if(debug){
613
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
437
fprintf(stderr, "\n*** Handshake failed ***\n");
614
438
gnutls_perror (ret);
615
439
}
616
440
retval = -1;
617
goto mandos_end;
441
goto exit;
618
442
}
619
443
620
/* Read OpenPGP packet that contains the wanted password */
444
//Retrieve OpenPGP packet that contains the wanted password
621
445
622
446
if(debug){
623
447
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
624
448
ip);
625
449
}
626
450
627
451
while(true){
628
buffer_capacity = adjustbuffer(&buffer, buffer_length,
629
buffer_capacity);
630
if (buffer_capacity == 0){
631
perror("adjustbuffer");
632
retval = -1;
633
goto mandos_end;
452
if (buffer_length + BUFFER_SIZE > buffer_capacity){
453
buffer = realloc(buffer, buffer_capacity + BUFFER_SIZE);
454
if (buffer == NULL){
455
perror("realloc");
456
goto exit;
457
}
458
buffer_capacity += BUFFER_SIZE;
634
459
}
635
460
636
sret = gnutls_record_recv(session, buffer+buffer_length,
637
BUFFER_SIZE);
638
if (sret == 0){
461
ret = gnutls_record_recv
462
(es.session, buffer+buffer_length, BUFFER_SIZE);
463
if (ret == 0){
639
464
break;
640
465
}
641
if (sret < 0){
642
switch(sret){
466
if (ret < 0){
467
switch(ret){
643
468
case GNUTLS_E_INTERRUPTED:
644
469
case GNUTLS_E_AGAIN:
645
470
break;
646
471
case GNUTLS_E_REHANDSHAKE:
647
do{
648
ret = gnutls_handshake (session);
649
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
472
ret = gnutls_handshake (es.session);
650
473
if (ret < 0){
651
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
474
fprintf(stderr, "\n*** Handshake failed ***\n");
652
475
gnutls_perror (ret);
653
476
retval = -1;
654
goto mandos_end;
477
goto exit;
655
478
}
656
479
break;
657
480
default:
658
481
fprintf(stderr, "Unknown error while reading data from"
659
" encrypted session with Mandos server\n");
482
" encrypted session with mandos server\n");
660
483
retval = -1;
661
gnutls_bye (session, GNUTLS_SHUT_RDWR);
662
goto mandos_end;
484
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
485
goto exit;
663
486
}
664
487
} else {
665
buffer_length += (size_t) sret;
488
buffer_length += (size_t) ret;
666
489
}
667
490
}
668
491
669
if(debug){
670
fprintf(stderr, "Closing TLS session\n");
671
}
672
673
gnutls_bye (session, GNUTLS_SHUT_RDWR);
674
675
492
if (buffer_length > 0){
676
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
493
decrypted_buffer_size = pgp_packet_decrypt(buffer,
677
494
buffer_length,
678
&decrypted_buffer);
495
&decrypted_buffer,
496
certdir);
679
497
if (decrypted_buffer_size >= 0){
680
written = 0;
681
498
while(written < (size_t) decrypted_buffer_size){
682
499
ret = (int)fwrite (decrypted_buffer + written, 1,
683
500
(size_t)decrypted_buffer_size - written,
696
513
} else {
697
514
retval = -1;
698
515
}
699
} else {
700
retval = -1;
701
}
702
703
/* Shutdown procedure */
704
705
mandos_end:
516
}
517
518
//shutdown procedure
519
520
if(debug){
521
fprintf(stderr, "Closing TLS session\n");
522
}
523
706
524
free(buffer);
707
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
708
if(ret == -1){
709
perror("close");
710
}
711
gnutls_deinit (session);
525
gnutls_bye (es.session, GNUTLS_SHUT_RDWR);
526
exit:
527
close(tcp_sd);
528
gnutls_deinit (es.session);
529
gnutls_certificate_free_credentials (es.cred);
530
gnutls_global_deinit ();
712
531
return retval;
713
532
}
714
533
715
static void resolve_callback(AvahiSServiceResolver *r,
716
AvahiIfIndex interface,
717
AVAHI_GCC_UNUSED AvahiProtocol protocol,
718
AvahiResolverEvent event,
719
const char *name,
720
const char *type,
721
const char *domain,
722
const char *host_name,
723
const AvahiAddress *address,
724
uint16_t port,
725
AVAHI_GCC_UNUSED AvahiStringList *txt,
726
AVAHI_GCC_UNUSED AvahiLookupResultFlags
727
flags,
728
void* userdata) {
729
mandos_context *mc = userdata;
730
assert(r);
534
static AvahiSimplePoll *simple_poll = NULL;
535
static AvahiServer *server = NULL;
536
537
static void resolve_callback(
538
AvahiSServiceResolver *r,
539
AvahiIfIndex interface,
540
AVAHI_GCC_UNUSED AvahiProtocol protocol,
541
AvahiResolverEvent event,
542
const char *name,
543
const char *type,
544
const char *domain,
545
const char *host_name,
546
const AvahiAddress *address,
547
uint16_t port,
548
AVAHI_GCC_UNUSED AvahiStringList *txt,
549
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
550
AVAHI_GCC_UNUSED void* userdata) {
551
552
assert(r); /* Spurious warning */
731
553
732
554
/* Called whenever a service has been resolved successfully or
733
555
timed out */
735
557
switch (event) {
736
558
default:
737
559
case AVAHI_RESOLVER_FAILURE:
738
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
739
" of type '%s' in domain '%s': %s\n", name, type, domain,
740
avahi_strerror(avahi_server_errno(mc->server)));
560
fprintf(stderr, "(Resolver) Failed to resolve service '%s' of"
561
" type '%s' in domain '%s': %s\n", name, type, domain,
562
avahi_strerror(avahi_server_errno(server)));
741
563
break;
742
564
743
565
case AVAHI_RESOLVER_FOUND:
745
567
char ip[AVAHI_ADDRESS_STR_MAX];
746
568
avahi_address_snprint(ip, sizeof(ip), address);
747
569
if(debug){
748
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
749
PRIu16 ") on port %d\n", name, host_name, ip,
750
interface, port);
570
fprintf(stderr, "Mandos server \"%s\" found on %s (%s) on"
571
" port %d\n", name, host_name, ip, port);
751
572
}
752
int ret = start_mandos_communication(ip, port, interface, mc);
573
int ret = start_mandos_communication(ip, port, interface);
753
574
if (ret == 0){
754
avahi_simple_poll_quit(mc->simple_poll);
575
exit(EXIT_SUCCESS);
755
576
}
756
577
}
757
578
}
758
579
avahi_s_service_resolver_free(r);
759
580
}
760
581
761
static void browse_callback( AvahiSServiceBrowser *b,
762
AvahiIfIndex interface,
763
AvahiProtocol protocol,
764
AvahiBrowserEvent event,
765
const char *name,
766
const char *type,
767
const char *domain,
768
AVAHI_GCC_UNUSED AvahiLookupResultFlags
769
flags,
770
void* userdata) {
771
mandos_context *mc = userdata;
772
assert(b);
773
774
/* Called whenever a new services becomes available on the LAN or
775
is removed from the LAN */
776
777
switch (event) {
778
default:
779
case AVAHI_BROWSER_FAILURE:
780
781
fprintf(stderr, "(Avahi browser) %s\n",
782
avahi_strerror(avahi_server_errno(mc->server)));
783
avahi_simple_poll_quit(mc->simple_poll);
784
return;
785
786
case AVAHI_BROWSER_NEW:
787
/* We ignore the returned Avahi resolver object. In the callback
788
function we free it. If the Avahi server is terminated before
789
the callback function is called the Avahi server will free the
790
resolver for us. */
791
792
if (!(avahi_s_service_resolver_new(mc->server, interface,
793
protocol, name, type, domain,
794
AVAHI_PROTO_INET6, 0,
795
resolve_callback, mc)))
796
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
797
name, avahi_strerror(avahi_server_errno(mc->server)));
798
break;
799
800
case AVAHI_BROWSER_REMOVE:
801
break;
802
803
case AVAHI_BROWSER_ALL_FOR_NOW:
804
case AVAHI_BROWSER_CACHE_EXHAUSTED:
805
if(debug){
806
fprintf(stderr, "No Mandos server found, still searching...\n");
582
static void browse_callback(
583
AvahiSServiceBrowser *b,
584
AvahiIfIndex interface,
585
AvahiProtocol protocol,
586
AvahiBrowserEvent event,
587
const char *name,
588
const char *type,
589
const char *domain,
590
AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
591
void* userdata) {
592
593
AvahiServer *s = userdata;
594
assert(b); /* Spurious warning */
595
596
/* Called whenever a new services becomes available on the LAN or
597
is removed from the LAN */
598
599
switch (event) {
600
default:
601
case AVAHI_BROWSER_FAILURE:
602
603
fprintf(stderr, "(Browser) %s\n",
604
avahi_strerror(avahi_server_errno(server)));
605
avahi_simple_poll_quit(simple_poll);
606
return;
607
608
case AVAHI_BROWSER_NEW:
609
/* We ignore the returned resolver object. In the callback
610
function we free it. If the server is terminated before
611
the callback function is called the server will free
612
the resolver for us. */
613
614
if (!(avahi_s_service_resolver_new(s, interface, protocol, name,
615
type, domain,
616
AVAHI_PROTO_INET6, 0,
617
resolve_callback, s)))
618
fprintf(stderr, "Failed to resolve service '%s': %s\n", name,
619
avahi_strerror(avahi_server_errno(s)));
620
break;
621
622
case AVAHI_BROWSER_REMOVE:
623
break;
624
625
case AVAHI_BROWSER_ALL_FOR_NOW:
626
case AVAHI_BROWSER_CACHE_EXHAUSTED:
627
break;
807
628
}
808
break;
809
}
810
}
811
812
int main(int argc, char *argv[]){
629
}
630
631
/* combinds file name and path and returns the malloced new string. som sane checks could/should be added */
632
const char *combinepath(const char *first, const char *second){
633
char *tmp;
634
tmp = malloc(strlen(first) + strlen(second) + 2);
635
if (tmp == NULL){
636
perror("malloc");
637
return NULL;
638
}
639
strcpy(tmp, first);
640
if (first[0] != '\0' and first[strlen(first) - 1] != '/'){
641
strcat(tmp, "/");
642
}
643
strcat(tmp, second);
644
return tmp;
645
}
646
647
648
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
649
AvahiServerConfig config;
813
650
AvahiSServiceBrowser *sb = NULL;
814
651
int error;
815
652
int ret;
816
int exitcode = EXIT_SUCCESS;
817
const char *interface = "eth0";
818
struct ifreq network;
819
int sd;
820
uid_t uid;
821
gid_t gid;
653
int returncode = EXIT_SUCCESS;
654
const char *interface = NULL;
655
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
822
656
char *connect_to = NULL;
823
char tempdir[] = "/tmp/mandosXXXXXX";
824
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
825
const char *seckey = PATHDIR "/" SECKEY;
826
const char *pubkey = PATHDIR "/" PUBKEY;
827
828
mandos_context mc = { .simple_poll = NULL, .server = NULL,
829
.dh_bits = 1024, .priority = "SECURE256"
830
":!CTYPE-X.509:+CTYPE-OPENPGP" };
831
bool gnutls_initalized = false;
832
bool gpgme_initalized = false;
833
834
{
835
struct argp_option options[] = {
836
{ .name = "debug", .key = 128,
837
.doc = "Debug mode", .group = 3 },
838
{ .name = "connect", .key = 'c',
839
.arg = "ADDRESS:PORT",
840
.doc = "Connect directly to a specific Mandos server",
841
.group = 1 },
842
{ .name = "interface", .key = 'i',
843
.arg = "NAME",
844
.doc = "Interface that will be used to search for Mandos"
845
" servers",
846
.group = 1 },
847
{ .name = "seckey", .key = 's',
848
.arg = "FILE",
849
.doc = "OpenPGP secret key file base name",
850
.group = 1 },
851
{ .name = "pubkey", .key = 'p',
852
.arg = "FILE",
853
.doc = "OpenPGP public key file base name",
854
.group = 2 },
855
{ .name = "dh-bits", .key = 129,
856
.arg = "BITS",
857
.doc = "Bit length of the prime number used in the"
858
" Diffie-Hellman key exchange",
859
.group = 2 },
860
{ .name = "priority", .key = 130,
861
.arg = "STRING",
862
.doc = "GnuTLS priority string for the TLS handshake",
863
.group = 1 },
864
{ .name = NULL }
865
};
866
867
error_t parse_opt (int key, char *arg,
868
struct argp_state *state) {
869
/* Get the INPUT argument from `argp_parse', which we know is
870
a pointer to our plugin list pointer. */
871
switch (key) {
872
case 128: /* --debug */
873
debug = true;
874
break;
875
case 'c': /* --connect */
876
connect_to = arg;
877
break;
878
case 'i': /* --interface */
879
interface = arg;
880
break;
881
case 's': /* --seckey */
882
seckey = arg;
883
break;
884
case 'p': /* --pubkey */
885
pubkey = arg;
886
break;
887
case 129: /* --dh-bits */
888
errno = 0;
889
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
890
if (errno){
891
perror("strtol");
892
exit(EXIT_FAILURE);
893
}
894
break;
895
case 130: /* --priority */
896
mc.priority = arg;
897
break;
898
case ARGP_KEY_ARG:
899
argp_usage (state);
900
case ARGP_KEY_END:
901
break;
902
default:
903
return ARGP_ERR_UNKNOWN;
904
}
905
return 0;
906
}
907
908
struct argp argp = { .options = options, .parser = parse_opt,
909
.args_doc = "",
910
.doc = "Mandos client -- Get and decrypt"
911
" passwords from a Mandos server" };
912
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
913
if (ret == ARGP_ERR_UNKNOWN){
914
fprintf(stderr, "Unknown error while parsing arguments\n");
915
exitcode = EXIT_FAILURE;
916
goto end;
917
}
918
}
919
920
/* If the interface is down, bring it up */
921
{
922
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
923
if(sd < 0) {
924
perror("socket");
925
exitcode = EXIT_FAILURE;
926
goto end;
927
}
928
strcpy(network.ifr_name, interface);
929
ret = ioctl(sd, SIOCGIFFLAGS, &network);
930
if(ret == -1){
931
perror("ioctl SIOCGIFFLAGS");
932
exitcode = EXIT_FAILURE;
933
goto end;
934
}
935
if((network.ifr_flags & IFF_UP) == 0){
936
network.ifr_flags |= IFF_UP;
937
ret = ioctl(sd, SIOCSIFFLAGS, &network);
938
if(ret == -1){
939
perror("ioctl SIOCSIFFLAGS");
940
exitcode = EXIT_FAILURE;
941
goto end;
942
}
943
}
944
ret = (int)TEMP_FAILURE_RETRY(close(sd));
945
if(ret == -1){
946
perror("close");
947
}
948
}
949
950
uid = getuid();
951
gid = getgid();
952
953
ret = setuid(uid);
954
if (ret == -1){
955
perror("setuid");
956
}
957
958
setgid(gid);
959
if (ret == -1){
960
perror("setgid");
961
}
962
963
ret = init_gnutls_global(&mc, pubkey, seckey);
964
if (ret == -1){
965
fprintf(stderr, "init_gnutls_global failed\n");
966
exitcode = EXIT_FAILURE;
967
goto end;
968
} else {
969
gnutls_initalized = true;
970
}
971
972
if(mkdtemp(tempdir) == NULL){
973
perror("mkdtemp");
974
tempdir[0] = '\0';
975
goto end;
976
}
977
978
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
979
fprintf(stderr, "gpgme_initalized failed\n");
980
exitcode = EXIT_FAILURE;
981
goto end;
982
} else {
983
gpgme_initalized = true;
984
}
985
986
if_index = (AvahiIfIndex) if_nametoindex(interface);
987
if(if_index == 0){
988
fprintf(stderr, "No such interface: \"%s\"\n", interface);
989
exit(EXIT_FAILURE);
657
658
while (true){
659
static struct option long_options[] = {
660
{"debug", no_argument, (int *)&debug, 1},
661
{"connect", required_argument, 0, 'C'},
662
{"interface", required_argument, 0, 'i'},
663
{"certdir", required_argument, 0, 'd'},
664
{"certkey", required_argument, 0, 'c'},
665
{"certfile", required_argument, 0, 'k'},
666
{0, 0, 0, 0} };
667
668
int option_index = 0;
669
ret = getopt_long (argc, argv, "i:", long_options,
670
&option_index);
671
672
if (ret == -1){
673
break;
674
}
675
676
switch(ret){
677
case 0:
678
break;
679
case 'i':
680
interface = optarg;
681
break;
682
case 'C':
683
connect_to = optarg;
684
break;
685
case 'd':
686
certdir = optarg;
687
break;
688
case 'c':
689
certfile = optarg;
690
break;
691
case 'k':
692
certkey = optarg;
693
break;
694
default:
695
exit(EXIT_FAILURE);
696
}
697
}
698
699
certfile = combinepath(certdir, certfile);
700
if (certfile == NULL){
701
goto exit;
702
}
703
704
if(interface != NULL){
705
if_index = (AvahiIfIndex) if_nametoindex(interface);
706
if(if_index == 0){
707
fprintf(stderr, "No such interface: \"%s\"\n", interface);
708
exit(EXIT_FAILURE);
709
}
990
710
}
991
711
992
712
if(connect_to != NULL){
995
715
char *address = strrchr(connect_to, ':');
996
716
if(address == NULL){
997
717
fprintf(stderr, "No colon in address\n");
998
exitcode = EXIT_FAILURE;
999
goto end;
718
exit(EXIT_FAILURE);
1000
719
}
1001
720
errno = 0;
1002
721
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
1003
722
if(errno){
1004
723
perror("Bad port number");
1005
exitcode = EXIT_FAILURE;
1006
goto end;
724
exit(EXIT_FAILURE);
1007
725
}
1008
726
*address = '\0';
1009
727
address = connect_to;
1010
ret = start_mandos_communication(address, port, if_index, &mc);
728
ret = start_mandos_communication(address, port, if_index);
1011
729
if(ret < 0){
1012
exitcode = EXIT_FAILURE;
730
exit(EXIT_FAILURE);
1013
731
} else {
1014
exitcode = EXIT_SUCCESS;
732
exit(EXIT_SUCCESS);
1015
733
}
1016
goto end;
734
}
735
736
certkey = combinepath(certdir, certkey);
737
if (certkey == NULL){
738
goto exit;
1017
739
}
1018
740
1019
741
if (not debug){
1020
742
avahi_set_log_function(empty_log);
1021
743
}
1022
744
1023
/* Initialize the pseudo-RNG for Avahi */
745
/* Initialize the psuedo-RNG */
1024
746
srand((unsigned int) time(NULL));
1025
1026
/* Allocate main Avahi loop object */
1027
mc.simple_poll = avahi_simple_poll_new();
1028
if (mc.simple_poll == NULL) {
1029
fprintf(stderr, "Avahi: Failed to create simple poll"
1030
" object.\n");
1031
exitcode = EXIT_FAILURE;
1032
goto end;
1033
}
1034
1035
{
1036
AvahiServerConfig config;
1037
/* Do not publish any local Zeroconf records */
1038
avahi_server_config_init(&config);
1039
config.publish_hinfo = 0;
1040
config.publish_addresses = 0;
1041
config.publish_workstation = 0;
1042
config.publish_domain = 0;
1043
1044
/* Allocate a new server */
1045
mc.server = avahi_server_new(avahi_simple_poll_get
1046
(mc.simple_poll), &config, NULL,
1047
NULL, &error);
1048
1049
/* Free the Avahi configuration data */
1050
avahi_server_config_free(&config);
1051
}
1052
1053
/* Check if creating the Avahi server object succeeded */
1054
if (mc.server == NULL) {
1055
fprintf(stderr, "Failed to create Avahi server: %s\n",
747
748
/* Allocate main loop object */
749
if (!(simple_poll = avahi_simple_poll_new())) {
750
fprintf(stderr, "Failed to create simple poll object.\n");
751
752
goto exit;
753
}
754
755
/* Do not publish any local records */
756
avahi_server_config_init(&config);
757
config.publish_hinfo = 0;
758
config.publish_addresses = 0;
759
config.publish_workstation = 0;
760
config.publish_domain = 0;
761
762
/* Allocate a new server */
763
server = avahi_server_new(avahi_simple_poll_get(simple_poll),
764
&config, NULL, NULL, &error);
765
766
/* Free the configuration data */
767
avahi_server_config_free(&config);
768
769
/* Check if creating the server object succeeded */
770
if (!server) {
771
fprintf(stderr, "Failed to create server: %s\n",
1056
772
avahi_strerror(error));
1057
exitcode = EXIT_FAILURE;
1058
goto end;
773
returncode = EXIT_FAILURE;
774
goto exit;
1059
775
}
1060
776
1061
/* Create the Avahi service browser */
1062
sb = avahi_s_service_browser_new(mc.server, if_index,
777
/* Create the service browser */
778
sb = avahi_s_service_browser_new(server, if_index,
1063
779
AVAHI_PROTO_INET6,
1064
780
"_mandos._tcp", NULL, 0,
1065
browse_callback, &mc);
1066
if (sb == NULL) {
781
browse_callback, server);
782
if (!sb) {
1067
783
fprintf(stderr, "Failed to create service browser: %s\n",
1068
avahi_strerror(avahi_server_errno(mc.server)));
1069
exitcode = EXIT_FAILURE;
1070
goto end;
784
avahi_strerror(avahi_server_errno(server)));
785
returncode = EXIT_FAILURE;
786
goto exit;
1071
787
}
1072
788
1073
789
/* Run the main loop */
1074
790
1075
791
if (debug){
1076
fprintf(stderr, "Starting Avahi loop search\n");
792
fprintf(stderr, "Starting avahi loop search\n");
1077
793
}
1078
794
1079
avahi_simple_poll_loop(mc.simple_poll);
1080
1081
end:
1082
795
avahi_simple_poll_loop(simple_poll);
796
797
exit:
798
1083
799
if (debug){
1084
800
fprintf(stderr, "%s exiting\n", argv[0]);
1085
801
}
1086
802
1087
803
/* Cleanup things */
1088
if (sb != NULL)
804
if (sb)
1089
805
avahi_s_service_browser_free(sb);
1090
806
1091
if (mc.server != NULL)
1092
avahi_server_free(mc.server);
1093
1094
if (mc.simple_poll != NULL)
1095
avahi_simple_poll_free(mc.simple_poll);
1096
1097
if (gnutls_initalized){
1098
gnutls_certificate_free_credentials(mc.cred);
1099
gnutls_global_deinit ();
1100
gnutls_dh_params_deinit(mc.dh_params);
1101
}
1102
1103
if(gpgme_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
closedir(d);
1137
}
1138
ret = rmdir(tempdir);
1139
if(ret == -1){
1140
perror("rmdir");
1141
}
1142
}
1143
1144
return exitcode;
807
if (server)
808
avahi_server_free(server);
809
810
if (simple_poll)
811
avahi_simple_poll_free(simple_poll);
812
free(certfile);
813
free(certkey);
814
815
return returncode;
1145
816
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0