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- Committer: Björn Påhlsson
- Date: 2008-08-03 17:24:47 UTC
- mfrom: (40 mandos)
- 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-20080803172447-uma248p1s4cbsp02
merge +
mandosclient
Added a adjustbuffer function.
mandosclient
Added a adjustbuffer function.
- 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
1
1
/* -*- coding: utf-8 -*- */
2
2
/*
3
* Mandos-client - get and decrypt data from a Mandos server
3
* Mandos client - get and decrypt data from a Mandos server
4
4
*
5
5
* This program is partly derived from an example program for an Avahi
6
6
* service browser, downloaded from
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
33
32
#define _LARGEFILE_SOURCE
34
33
#define _FILE_OFFSET_BITS 64
35
34
36
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
37
36
38
#include <stdio.h> /* fprintf(), stderr, fwrite(),
39
stdout, ferror(), sscanf(),
40
remove() */
41
#include <stdint.h> /* uint16_t, uint32_t */
42
#include <stddef.h> /* NULL, size_t, ssize_t */
43
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
44
srand() */
45
#include <stdbool.h> /* bool, true */
46
#include <string.h> /* memset(), strcmp(), strlen(),
47
strerror(), asprintf(), strcpy() */
48
#include <sys/ioctl.h> /* ioctl */
49
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
50
sockaddr_in6, PF_INET6,
51
SOCK_STREAM, INET6_ADDRSTRLEN,
52
uid_t, gid_t, open(), opendir(),
53
DIR */
54
#include <sys/stat.h> /* open() */
55
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
56
struct in6_addr, inet_pton(),
57
connect() */
58
#include <fcntl.h> /* open() */
59
#include <dirent.h> /* opendir(), struct dirent, readdir()
60
*/
61
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
62
#include <assert.h> /* assert() */
63
#include <errno.h> /* perror(), errno */
64
#include <time.h> /* nanosleep(), time() */
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,
43
SIOCSIFFLAGS */
65
44
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
66
SIOCSIFFLAGS, if_indextoname(),
67
if_nametoindex(), IF_NAMESIZE */
68
#include <netinet/in.h>
69
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
70
getuid(), getgid(), setuid(),
71
setgid() */
72
#include <arpa/inet.h> /* inet_pton(), htons */
73
#include <iso646.h> /* not, and, or */
74
#include <argp.h> /* struct argp_option, error_t, struct
75
argp_state, struct argp,
76
argp_parse(), ARGP_KEY_ARG,
77
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
78
#include <sys/klog.h> /* klogctl() */
45
SIOCSIFFLAGS */
79
46
80
/* Avahi */
81
/* All Avahi types, constants and functions
82
Avahi*, avahi_*,
83
AVAHI_* */
84
47
#include <avahi-core/core.h>
85
48
#include <avahi-core/lookup.h>
86
49
#include <avahi-core/log.h>
88
51
#include <avahi-common/malloc.h>
89
52
#include <avahi-common/error.h>
90
53
91
/* GnuTLS */
92
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
93
functions:
94
gnutls_*
95
init_gnutls_session(),
96
GNUTLS_* */
97
#include <gnutls/openpgp.h>
98
/* gnutls_certificate_set_openpgp_key_file(),
99
GNUTLS_OPENPGP_FMT_BASE64 */
54
/* Mandos client part */
55
#include <sys/types.h> /* socket(), inet_pton() */
56
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
57
struct in6_addr, inet_pton() */
58
#include <gnutls/gnutls.h> /* All GnuTLS stuff */
59
#include <gnutls/openpgp.h> /* GnuTLS with openpgp stuff */
60
61
#include <unistd.h> /* close() */
62
#include <netinet/in.h>
63
#include <stdbool.h> /* true */
64
#include <string.h> /* memset */
65
#include <arpa/inet.h> /* inet_pton() */
66
#include <iso646.h> /* not */
67
#include <net/if.h> /* IF_NAMESIZE */
100
68
101
69
/* GPGME */
102
#include <gpgme.h> /* All GPGME types, constants and
103
functions:
104
gpgme_*
105
GPGME_PROTOCOL_OpenPGP,
106
GPG_ERR_NO_* */
70
#include <errno.h> /* perror() */
71
#include <gpgme.h>
72
73
/* getopt_long */
74
#include <getopt.h>
107
75
108
76
#define BUFFER_SIZE 256
109
77
110
#define PATHDIR "/conf/conf.d/mandos"
111
#define SECKEY "seckey.txt"
112
#define PUBKEY "pubkey.txt"
78
static const char *keydir = "/conf/conf.d/mandos";
79
static const char *pubkeyfile = "pubkey.txt";
80
static const char *seckeyfile = "seckey.txt";
113
81
114
82
bool debug = false;
115
static const char mandos_protocol_version[] = "1";
116
const char *argp_program_version = "mandos-client " VERSION;
117
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
118
119
/* Used for passing in values through the Avahi callback functions */
83
84
const char mandos_protocol_version[] = "1";
85
86
/* Used for passing in values through all the callback functions */
120
87
typedef struct {
121
88
AvahiSimplePoll *simple_poll;
122
89
AvahiServer *server;
123
90
gnutls_certificate_credentials_t cred;
124
91
unsigned int dh_bits;
125
gnutls_dh_params_t dh_params;
126
92
const char *priority;
127
gpgme_ctx_t ctx;
128
93
} mandos_context;
129
94
130
/*
131
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
132
* "buffer_capacity" is how much is currently allocated,
133
* "buffer_length" is how much is already used.
134
*/
135
95
size_t adjustbuffer(char **buffer, size_t buffer_length,
136
96
size_t buffer_capacity){
137
if(buffer_length + BUFFER_SIZE > buffer_capacity){
97
if (buffer_length + BUFFER_SIZE > buffer_capacity){
138
98
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
139
if(buffer == NULL){
99
if (buffer == NULL){
140
100
return 0;
141
101
}
142
102
buffer_capacity += BUFFER_SIZE;
145
105
}
146
106
147
107
/*
148
* Initialize GPGME.
108
* Decrypt OpenPGP data using keyrings in HOMEDIR.
109
* Returns -1 on error
149
110
*/
150
static bool init_gpgme(mandos_context *mc, const char *seckey,
151
const char *pubkey, const char *tempdir){
152
int ret;
111
static ssize_t pgp_packet_decrypt (const char *cryptotext,
112
size_t crypto_size,
113
char **plaintext,
114
const char *homedir){
115
gpgme_data_t dh_crypto, dh_plain;
116
gpgme_ctx_t ctx;
153
117
gpgme_error_t rc;
118
ssize_t ret;
119
size_t plaintext_capacity = 0;
120
ssize_t plaintext_length = 0;
154
121
gpgme_engine_info_t engine_info;
155
122
156
157
/*
158
* Helper function to insert pub and seckey to the engine keyring.
159
*/
160
bool import_key(const char *filename){
161
int fd;
162
gpgme_data_t pgp_data;
163
164
fd = (int)TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
165
if(fd == -1){
166
perror("open");
167
return false;
168
}
169
170
rc = gpgme_data_new_from_fd(&pgp_data, fd);
171
if(rc != GPG_ERR_NO_ERROR){
172
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
173
gpgme_strsource(rc), gpgme_strerror(rc));
174
return false;
175
}
176
177
rc = gpgme_op_import(mc->ctx, pgp_data);
178
if(rc != GPG_ERR_NO_ERROR){
179
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
180
gpgme_strsource(rc), gpgme_strerror(rc));
181
return false;
182
}
183
184
ret = (int)TEMP_FAILURE_RETRY(close(fd));
185
if(ret == -1){
186
perror("close");
187
}
188
gpgme_data_release(pgp_data);
189
return true;
190
}
191
192
if(debug){
193
fprintf(stderr, "Initialize gpgme\n");
123
if (debug){
124
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
194
125
}
195
126
196
127
/* Init GPGME */
197
128
gpgme_check_version(NULL);
198
129
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
199
if(rc != GPG_ERR_NO_ERROR){
130
if (rc != GPG_ERR_NO_ERROR){
200
131
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
201
132
gpgme_strsource(rc), gpgme_strerror(rc));
202
return false;
133
return -1;
203
134
}
204
135
205
/* Set GPGME home directory for the OpenPGP engine only */
206
rc = gpgme_get_engine_info(&engine_info);
207
if(rc != GPG_ERR_NO_ERROR){
136
/* Set GPGME home directory for the OpenPGP engine only */
137
rc = gpgme_get_engine_info (&engine_info);
138
if (rc != GPG_ERR_NO_ERROR){
208
139
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
209
140
gpgme_strsource(rc), gpgme_strerror(rc));
210
return false;
141
return -1;
211
142
}
212
143
while(engine_info != NULL){
213
144
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
214
145
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
215
engine_info->file_name, tempdir);
146
engine_info->file_name, homedir);
216
147
break;
217
148
}
218
149
engine_info = engine_info->next;
219
150
}
220
151
if(engine_info == NULL){
221
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
222
return false;
223
}
224
225
/* Create new GPGME "context" */
226
rc = gpgme_new(&(mc->ctx));
227
if(rc != GPG_ERR_NO_ERROR){
228
fprintf(stderr, "bad gpgme_new: %s: %s\n",
229
gpgme_strsource(rc), gpgme_strerror(rc));
230
return false;
231
}
232
233
if(not import_key(pubkey) or not import_key(seckey)){
234
return false;
235
}
236
237
return true;
238
}
239
240
/*
241
* Decrypt OpenPGP data.
242
* Returns -1 on error
243
*/
244
static ssize_t pgp_packet_decrypt(const mandos_context *mc,
245
const char *cryptotext,
246
size_t crypto_size,
247
char **plaintext){
248
gpgme_data_t dh_crypto, dh_plain;
249
gpgme_error_t rc;
250
ssize_t ret;
251
size_t plaintext_capacity = 0;
252
ssize_t plaintext_length = 0;
253
254
if(debug){
255
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
152
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
153
return -1;
256
154
}
257
155
258
156
/* Create new GPGME data buffer from memory cryptotext */
259
157
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
260
158
0);
261
if(rc != GPG_ERR_NO_ERROR){
159
if (rc != GPG_ERR_NO_ERROR){
262
160
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
263
161
gpgme_strsource(rc), gpgme_strerror(rc));
264
162
return -1;
266
164
267
165
/* Create new empty GPGME data buffer for the plaintext */
268
166
rc = gpgme_data_new(&dh_plain);
269
if(rc != GPG_ERR_NO_ERROR){
167
if (rc != GPG_ERR_NO_ERROR){
270
168
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
271
169
gpgme_strsource(rc), gpgme_strerror(rc));
272
170
gpgme_data_release(dh_crypto);
273
171
return -1;
274
172
}
275
173
174
/* Create new GPGME "context" */
175
rc = gpgme_new(&ctx);
176
if (rc != GPG_ERR_NO_ERROR){
177
fprintf(stderr, "bad gpgme_new: %s: %s\n",
178
gpgme_strsource(rc), gpgme_strerror(rc));
179
plaintext_length = -1;
180
goto decrypt_end;
181
}
182
276
183
/* Decrypt data from the cryptotext data buffer to the plaintext
277
184
data buffer */
278
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
279
if(rc != GPG_ERR_NO_ERROR){
185
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
186
if (rc != GPG_ERR_NO_ERROR){
280
187
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
281
188
gpgme_strsource(rc), gpgme_strerror(rc));
282
189
plaintext_length = -1;
283
if(debug){
284
gpgme_decrypt_result_t result;
285
result = gpgme_op_decrypt_result(mc->ctx);
286
if(result == NULL){
287
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
288
} else {
289
fprintf(stderr, "Unsupported algorithm: %s\n",
290
result->unsupported_algorithm);
291
fprintf(stderr, "Wrong key usage: %u\n",
292
result->wrong_key_usage);
293
if(result->file_name != NULL){
294
fprintf(stderr, "File name: %s\n", result->file_name);
295
}
296
gpgme_recipient_t recipient;
297
recipient = result->recipients;
298
if(recipient){
299
while(recipient != NULL){
300
fprintf(stderr, "Public key algorithm: %s\n",
301
gpgme_pubkey_algo_name(recipient->pubkey_algo));
302
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
303
fprintf(stderr, "Secret key available: %s\n",
304
recipient->status == GPG_ERR_NO_SECKEY
305
? "No" : "Yes");
306
recipient = recipient->next;
307
}
308
}
309
}
310
}
311
190
goto decrypt_end;
312
191
}
313
192
315
194
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
316
195
}
317
196
197
if (debug){
198
gpgme_decrypt_result_t result;
199
result = gpgme_op_decrypt_result(ctx);
200
if (result == NULL){
201
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
202
} else {
203
fprintf(stderr, "Unsupported algorithm: %s\n",
204
result->unsupported_algorithm);
205
fprintf(stderr, "Wrong key usage: %d\n",
206
result->wrong_key_usage);
207
if(result->file_name != NULL){
208
fprintf(stderr, "File name: %s\n", result->file_name);
209
}
210
gpgme_recipient_t recipient;
211
recipient = result->recipients;
212
if(recipient){
213
while(recipient != NULL){
214
fprintf(stderr, "Public key algorithm: %s\n",
215
gpgme_pubkey_algo_name(recipient->pubkey_algo));
216
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
217
fprintf(stderr, "Secret key available: %s\n",
218
recipient->status == GPG_ERR_NO_SECKEY
219
? "No" : "Yes");
220
recipient = recipient->next;
221
}
222
}
223
}
224
}
225
318
226
/* Seek back to the beginning of the GPGME plaintext data buffer */
319
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
320
perror("gpgme_data_seek");
227
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
228
perror("pgpme_data_seek");
321
229
plaintext_length = -1;
322
230
goto decrypt_end;
323
231
}
324
232
325
233
*plaintext = NULL;
326
234
while(true){
327
plaintext_capacity = adjustbuffer(plaintext,
328
(size_t)plaintext_length,
235
plaintext_capacity = adjustbuffer(plaintext, (size_t)plaintext_length,
329
236
plaintext_capacity);
330
if(plaintext_capacity == 0){
237
if (plaintext_capacity == 0){
331
238
perror("adjustbuffer");
332
239
plaintext_length = -1;
333
240
goto decrypt_end;
336
243
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
337
244
BUFFER_SIZE);
338
245
/* Print the data, if any */
339
if(ret == 0){
246
if (ret == 0){
340
247
/* EOF */
341
248
break;
342
249
}
347
254
}
348
255
plaintext_length += ret;
349
256
}
350
257
351
258
if(debug){
352
259
fprintf(stderr, "Decrypted password is: ");
353
260
for(ssize_t i = 0; i < plaintext_length; i++){
366
273
return plaintext_length;
367
274
}
368
275
369
static const char * safer_gnutls_strerror(int value) {
370
const char *ret = gnutls_strerror(value); /* Spurious warning from
371
-Wunreachable-code */
372
if(ret == NULL)
276
static const char * safer_gnutls_strerror (int value) {
277
const char *ret = gnutls_strerror (value);
278
if (ret == NULL)
373
279
ret = "(unknown)";
374
280
return ret;
375
281
}
380
286
fprintf(stderr, "GnuTLS: %s", string);
381
287
}
382
288
383
static int init_gnutls_global(mandos_context *mc,
384
const char *pubkeyfilename,
385
const char *seckeyfilename){
289
static int initgnutls(mandos_context *mc, gnutls_session_t *session,
290
gnutls_dh_params_t *dh_params){
386
291
int ret;
387
292
388
293
if(debug){
389
294
fprintf(stderr, "Initializing GnuTLS\n");
390
295
}
391
392
ret = gnutls_global_init();
393
if(ret != GNUTLS_E_SUCCESS) {
394
fprintf(stderr, "GnuTLS global_init: %s\n",
395
safer_gnutls_strerror(ret));
296
297
if ((ret = gnutls_global_init ())
298
!= GNUTLS_E_SUCCESS) {
299
fprintf (stderr, "GnuTLS global_init: %s\n",
300
safer_gnutls_strerror(ret));
396
301
return -1;
397
302
}
398
303
399
if(debug){
304
if (debug){
400
305
/* "Use a log level over 10 to enable all debugging options."
401
306
* - GnuTLS manual
402
307
*/
405
310
}
406
311
407
312
/* OpenPGP credentials */
408
gnutls_certificate_allocate_credentials(&mc->cred);
409
if(ret != GNUTLS_E_SUCCESS){
410
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
411
* from
412
* -Wunreachable-code
413
*/
414
safer_gnutls_strerror(ret));
415
gnutls_global_deinit();
313
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
314
!= GNUTLS_E_SUCCESS) {
315
fprintf (stderr, "GnuTLS memory error: %s\n",
316
safer_gnutls_strerror(ret));
416
317
return -1;
417
318
}
418
319
419
320
if(debug){
420
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
421
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
422
seckeyfilename);
321
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
322
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
323
seckeyfile);
423
324
}
424
325
425
326
ret = gnutls_certificate_set_openpgp_key_file
426
(mc->cred, pubkeyfilename, seckeyfilename,
427
GNUTLS_OPENPGP_FMT_BASE64);
428
if(ret != GNUTLS_E_SUCCESS) {
327
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
328
if (ret != GNUTLS_E_SUCCESS) {
429
329
fprintf(stderr,
430
330
"Error[%d] while reading the OpenPGP key pair ('%s',"
431
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
432
fprintf(stderr, "The GnuTLS error is: %s\n",
331
" '%s')\n", ret, pubkeyfile, seckeyfile);
332
fprintf(stdout, "The GnuTLS error is: %s\n",
433
333
safer_gnutls_strerror(ret));
434
goto globalfail;
334
return -1;
435
335
}
436
336
437
337
/* GnuTLS server initialization */
438
ret = gnutls_dh_params_init(&mc->dh_params);
439
if(ret != GNUTLS_E_SUCCESS) {
440
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
441
" %s\n", safer_gnutls_strerror(ret));
442
goto globalfail;
443
}
444
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
445
if(ret != GNUTLS_E_SUCCESS) {
446
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
447
safer_gnutls_strerror(ret));
448
goto globalfail;
449
}
450
451
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
452
453
return 0;
454
455
globalfail:
456
457
gnutls_certificate_free_credentials(mc->cred);
458
gnutls_global_deinit();
459
gnutls_dh_params_deinit(mc->dh_params);
460
return -1;
461
}
462
463
static int init_gnutls_session(mandos_context *mc,
464
gnutls_session_t *session){
465
int ret;
338
ret = gnutls_dh_params_init(dh_params);
339
if (ret != GNUTLS_E_SUCCESS) {
340
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
341
" %s\n", safer_gnutls_strerror(ret));
342
return -1;
343
}
344
ret = gnutls_dh_params_generate2(*dh_params, mc->dh_bits);
345
if (ret != GNUTLS_E_SUCCESS) {
346
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
347
safer_gnutls_strerror(ret));
348
return -1;
349
}
350
351
gnutls_certificate_set_dh_params(mc->cred, *dh_params);
352
466
353
/* GnuTLS session creation */
467
354
ret = gnutls_init(session, GNUTLS_SERVER);
468
if(ret != GNUTLS_E_SUCCESS){
355
if (ret != GNUTLS_E_SUCCESS){
469
356
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
470
357
safer_gnutls_strerror(ret));
471
358
}
473
360
{
474
361
const char *err;
475
362
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
476
if(ret != GNUTLS_E_SUCCESS) {
363
if (ret != GNUTLS_E_SUCCESS) {
477
364
fprintf(stderr, "Syntax error at: %s\n", err);
478
365
fprintf(stderr, "GnuTLS error: %s\n",
479
366
safer_gnutls_strerror(ret));
480
gnutls_deinit(*session);
481
367
return -1;
482
368
}
483
369
}
484
370
485
371
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
486
372
mc->cred);
487
if(ret != GNUTLS_E_SUCCESS) {
373
if (ret != GNUTLS_E_SUCCESS) {
488
374
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
489
375
safer_gnutls_strerror(ret));
490
gnutls_deinit(*session);
491
376
return -1;
492
377
}
493
378
494
379
/* ignore client certificate if any. */
495
gnutls_certificate_server_set_request(*session,
496
GNUTLS_CERT_IGNORE);
380
gnutls_certificate_server_set_request (*session,
381
GNUTLS_CERT_IGNORE);
497
382
498
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
383
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
499
384
500
385
return 0;
501
386
}
509
394
AvahiIfIndex if_index,
510
395
mandos_context *mc){
511
396
int ret, tcp_sd;
512
ssize_t sret;
513
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
397
struct sockaddr_in6 to;
514
398
char *buffer = NULL;
515
399
char *decrypted_buffer;
516
400
size_t buffer_length = 0;
520
404
int retval = 0;
521
405
char interface[IF_NAMESIZE];
522
406
gnutls_session_t session;
407
gnutls_dh_params_t dh_params;
523
408
524
ret = init_gnutls_session(mc, &session);
525
if(ret != 0){
409
ret = initgnutls (mc, &session, &dh_params);
410
if (ret != 0){
526
411
return -1;
527
412
}
528
413
529
414
if(debug){
530
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
531
"\n", ip, port);
415
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
416
ip, port);
532
417
}
533
418
534
419
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
536
421
perror("socket");
537
422
return -1;
538
423
}
539
424
540
425
if(debug){
541
426
if(if_indextoname((unsigned int)if_index, interface) == NULL){
542
427
perror("if_indextoname");
545
430
fprintf(stderr, "Binding to interface %s\n", interface);
546
431
}
547
432
548
memset(&to, 0, sizeof(to));
549
to.in6.sin6_family = AF_INET6;
433
memset(&to,0,sizeof(to)); /* Spurious warning */
434
to.sin6_family = AF_INET6;
550
435
/* It would be nice to have a way to detect if we were passed an
551
436
IPv4 address here. Now we assume an IPv6 address. */
552
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
553
if(ret < 0 ){
437
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
438
if (ret < 0 ){
554
439
perror("inet_pton");
555
440
return -1;
556
441
}
558
443
fprintf(stderr, "Bad address: %s\n", ip);
559
444
return -1;
560
445
}
561
to.in6.sin6_port = htons(port); /* Spurious warnings from
562
-Wconversion and
563
-Wunreachable-code */
446
to.sin6_port = htons(port); /* Spurious warning */
564
447
565
to.in6.sin6_scope_id = (uint32_t)if_index;
448
to.sin6_scope_id = (uint32_t)if_index;
566
449
567
450
if(debug){
568
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
569
port);
451
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
570
452
char addrstr[INET6_ADDRSTRLEN] = "";
571
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
453
if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr,
572
454
sizeof(addrstr)) == NULL){
573
455
perror("inet_ntop");
574
456
} else {
578
460
}
579
461
}
580
462
581
ret = connect(tcp_sd, &to.in, sizeof(to));
582
if(ret < 0){
463
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
464
if (ret < 0){
583
465
perror("connect");
584
466
return -1;
585
467
}
586
468
587
469
const char *out = mandos_protocol_version;
588
470
written = 0;
589
while(true){
471
while (true){
590
472
size_t out_size = strlen(out);
591
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
473
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
592
474
out_size - written));
593
if(ret == -1){
475
if (ret == -1){
594
476
perror("write");
595
477
retval = -1;
596
478
goto mandos_end;
599
481
if(written < out_size){
600
482
continue;
601
483
} else {
602
if(out == mandos_protocol_version){
484
if (out == mandos_protocol_version){
603
485
written = 0;
604
486
out = "\r\n";
605
487
} else {
607
489
}
608
490
}
609
491
}
610
492
611
493
if(debug){
612
494
fprintf(stderr, "Establishing TLS session with %s\n", ip);
613
495
}
614
496
615
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
616
617
do{
618
ret = gnutls_handshake(session);
619
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
620
621
if(ret != GNUTLS_E_SUCCESS){
497
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
498
499
ret = gnutls_handshake (session);
500
501
if (ret != GNUTLS_E_SUCCESS){
622
502
if(debug){
623
503
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
624
gnutls_perror(ret);
504
gnutls_perror (ret);
625
505
}
626
506
retval = -1;
627
507
goto mandos_end;
633
513
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
634
514
ip);
635
515
}
636
516
637
517
while(true){
638
buffer_capacity = adjustbuffer(&buffer, buffer_length,
639
buffer_capacity);
640
if(buffer_capacity == 0){
518
buffer_capacity = adjustbuffer(&buffer, buffer_length, buffer_capacity);
519
if (buffer_capacity == 0){
641
520
perror("adjustbuffer");
642
521
retval = -1;
643
522
goto mandos_end;
644
523
}
645
524
646
sret = gnutls_record_recv(session, buffer+buffer_length,
647
BUFFER_SIZE);
648
if(sret == 0){
525
ret = gnutls_record_recv(session, buffer+buffer_length,
526
BUFFER_SIZE);
527
if (ret == 0){
649
528
break;
650
529
}
651
if(sret < 0){
652
switch(sret){
530
if (ret < 0){
531
switch(ret){
653
532
case GNUTLS_E_INTERRUPTED:
654
533
case GNUTLS_E_AGAIN:
655
534
break;
656
535
case GNUTLS_E_REHANDSHAKE:
657
do{
658
ret = gnutls_handshake(session);
659
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
660
if(ret < 0){
536
ret = gnutls_handshake (session);
537
if (ret < 0){
661
538
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
662
gnutls_perror(ret);
539
gnutls_perror (ret);
663
540
retval = -1;
664
541
goto mandos_end;
665
542
}
668
545
fprintf(stderr, "Unknown error while reading data from"
669
546
" encrypted session with Mandos server\n");
670
547
retval = -1;
671
gnutls_bye(session, GNUTLS_SHUT_RDWR);
548
gnutls_bye (session, GNUTLS_SHUT_RDWR);
672
549
goto mandos_end;
673
550
}
674
551
} else {
675
buffer_length += (size_t) sret;
552
buffer_length += (size_t) ret;
676
553
}
677
554
}
678
555
680
557
fprintf(stderr, "Closing TLS session\n");
681
558
}
682
559
683
gnutls_bye(session, GNUTLS_SHUT_RDWR);
560
gnutls_bye (session, GNUTLS_SHUT_RDWR);
684
561
685
if(buffer_length > 0){
686
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
562
if (buffer_length > 0){
563
decrypted_buffer_size = pgp_packet_decrypt(buffer,
687
564
buffer_length,
688
&decrypted_buffer);
689
if(decrypted_buffer_size >= 0){
565
&decrypted_buffer,
566
keydir);
567
if (decrypted_buffer_size >= 0){
690
568
written = 0;
691
569
while(written < (size_t) decrypted_buffer_size){
692
ret = (int)fwrite(decrypted_buffer + written, 1,
693
(size_t)decrypted_buffer_size - written,
694
stdout);
570
ret = (int)fwrite (decrypted_buffer + written, 1,
571
(size_t)decrypted_buffer_size - written,
572
stdout);
695
573
if(ret == 0 and ferror(stdout)){
696
574
if(debug){
697
575
fprintf(stderr, "Error writing encrypted data: %s\n",
706
584
} else {
707
585
retval = -1;
708
586
}
709
} else {
710
retval = -1;
711
587
}
712
588
713
589
/* Shutdown procedure */
714
590
715
591
mandos_end:
716
592
free(buffer);
717
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
718
if(ret == -1){
719
perror("close");
720
}
721
gnutls_deinit(session);
593
close(tcp_sd);
594
gnutls_deinit (session);
595
gnutls_certificate_free_credentials (mc->cred);
596
gnutls_global_deinit ();
722
597
return retval;
723
598
}
724
599
737
612
flags,
738
613
void* userdata) {
739
614
mandos_context *mc = userdata;
740
assert(r);
615
assert(r); /* Spurious warning */
741
616
742
617
/* Called whenever a service has been resolved successfully or
743
618
timed out */
744
619
745
switch(event) {
620
switch (event) {
746
621
default:
747
622
case AVAHI_RESOLVER_FAILURE:
748
623
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
755
630
char ip[AVAHI_ADDRESS_STR_MAX];
756
631
avahi_address_snprint(ip, sizeof(ip), address);
757
632
if(debug){
758
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
759
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
760
ip, (intmax_t)interface, port);
633
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
634
" port %d\n", name, host_name, ip, interface, port);
761
635
}
762
636
int ret = start_mandos_communication(ip, port, interface, mc);
763
if(ret == 0){
764
avahi_simple_poll_quit(mc->simple_poll);
637
if (ret == 0){
638
exit(EXIT_SUCCESS);
765
639
}
766
640
}
767
641
}
779
653
flags,
780
654
void* userdata) {
781
655
mandos_context *mc = userdata;
782
assert(b);
656
assert(b); /* Spurious warning */
783
657
784
658
/* Called whenever a new services becomes available on the LAN or
785
659
is removed from the LAN */
786
660
787
switch(event) {
661
switch (event) {
788
662
default:
789
663
case AVAHI_BROWSER_FAILURE:
790
664
799
673
the callback function is called the Avahi server will free the
800
674
resolver for us. */
801
675
802
if(!(avahi_s_service_resolver_new(mc->server, interface,
676
if (!(avahi_s_service_resolver_new(mc->server, interface,
803
677
protocol, name, type, domain,
804
678
AVAHI_PROTO_INET6, 0,
805
679
resolve_callback, mc)))
819
693
}
820
694
}
821
695
696
/* Combines file name and path and returns the malloced new
697
string. some sane checks could/should be added */
698
static const char *combinepath(const char *first, const char *second){
699
size_t f_len = strlen(first);
700
size_t s_len = strlen(second);
701
char *tmp = malloc(f_len + s_len + 2);
702
if (tmp == NULL){
703
return NULL;
704
}
705
if(f_len > 0){
706
memcpy(tmp, first, f_len); /* Spurious warning */
707
}
708
tmp[f_len] = '/';
709
if(s_len > 0){
710
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
711
}
712
tmp[f_len + 1 + s_len] = '\0';
713
return tmp;
714
}
715
716
822
717
int main(int argc, char *argv[]){
823
718
AvahiSServiceBrowser *sb = NULL;
824
719
int error;
825
720
int ret;
826
intmax_t tmpmax;
827
int numchars;
828
721
int exitcode = EXIT_SUCCESS;
829
722
const char *interface = "eth0";
830
723
struct ifreq network;
831
724
int sd;
832
uid_t uid;
833
gid_t gid;
834
725
char *connect_to = NULL;
835
char tempdir[] = "/tmp/mandosXXXXXX";
836
bool tempdir_created = false;
837
726
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
838
const char *seckey = PATHDIR "/" SECKEY;
839
const char *pubkey = PATHDIR "/" PUBKEY;
840
841
727
mandos_context mc = { .simple_poll = NULL, .server = NULL,
842
.dh_bits = 1024, .priority = "SECURE256"
843
":!CTYPE-X.509:+CTYPE-OPENPGP" };
844
bool gnutls_initialized = false;
845
bool gpgme_initialized = false;
846
double delay = 2.5;
728
.dh_bits = 1024, .priority = "SECURE256"};
847
729
848
730
{
849
struct argp_option options[] = {
850
{ .name = "debug", .key = 128,
851
.doc = "Debug mode", .group = 3 },
852
{ .name = "connect", .key = 'c',
853
.arg = "ADDRESS:PORT",
854
.doc = "Connect directly to a specific Mandos server",
855
.group = 1 },
856
{ .name = "interface", .key = 'i',
857
.arg = "NAME",
858
.doc = "Interface that will be used to search for Mandos"
859
" servers",
860
.group = 1 },
861
{ .name = "seckey", .key = 's',
862
.arg = "FILE",
863
.doc = "OpenPGP secret key file base name",
864
.group = 1 },
865
{ .name = "pubkey", .key = 'p',
866
.arg = "FILE",
867
.doc = "OpenPGP public key file base name",
868
.group = 2 },
869
{ .name = "dh-bits", .key = 129,
870
.arg = "BITS",
871
.doc = "Bit length of the prime number used in the"
872
" Diffie-Hellman key exchange",
873
.group = 2 },
874
{ .name = "priority", .key = 130,
875
.arg = "STRING",
876
.doc = "GnuTLS priority string for the TLS handshake",
877
.group = 1 },
878
{ .name = "delay", .key = 131,
879
.arg = "SECONDS",
880
.doc = "Maximum delay to wait for interface startup",
881
.group = 2 },
882
{ .name = NULL }
883
};
884
885
error_t parse_opt(int key, char *arg,
886
struct argp_state *state) {
887
switch(key) {
888
case 128: /* --debug */
889
debug = true;
890
break;
891
case 'c': /* --connect */
892
connect_to = arg;
893
break;
894
case 'i': /* --interface */
895
interface = arg;
896
break;
897
case 's': /* --seckey */
898
seckey = arg;
899
break;
900
case 'p': /* --pubkey */
901
pubkey = arg;
902
break;
903
case 129: /* --dh-bits */
904
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
905
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
906
or arg[numchars] != '\0'){
907
fprintf(stderr, "Bad number of DH bits\n");
908
exit(EXIT_FAILURE);
909
}
910
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
911
break;
912
case 130: /* --priority */
913
mc.priority = arg;
914
break;
915
case 131: /* --delay */
916
ret = sscanf(arg, "%lf%n", &delay, &numchars);
917
if(ret < 1 or arg[numchars] != '\0'){
918
fprintf(stderr, "Bad delay\n");
919
exit(EXIT_FAILURE);
920
}
921
break;
922
case ARGP_KEY_ARG:
923
argp_usage(state);
924
case ARGP_KEY_END:
925
break;
731
/* Temporary int to get the address of for getopt_long */
732
int debug_int = debug ? 1 : 0;
733
while (true){
734
struct option long_options[] = {
735
{"debug", no_argument, &debug_int, 1},
736
{"connect", required_argument, NULL, 'c'},
737
{"interface", required_argument, NULL, 'i'},
738
{"keydir", required_argument, NULL, 'd'},
739
{"seckey", required_argument, NULL, 's'},
740
{"pubkey", required_argument, NULL, 'p'},
741
{"dh-bits", required_argument, NULL, 'D'},
742
{"priority", required_argument, NULL, 'P'},
743
{0, 0, 0, 0} };
744
745
int option_index = 0;
746
ret = getopt_long (argc, argv, "i:", long_options,
747
&option_index);
748
749
if (ret == -1){
750
break;
751
}
752
753
switch(ret){
754
case 0:
755
break;
756
case 'i':
757
interface = optarg;
758
break;
759
case 'c':
760
connect_to = optarg;
761
break;
762
case 'd':
763
keydir = optarg;
764
break;
765
case 'p':
766
pubkeyfile = optarg;
767
break;
768
case 's':
769
seckeyfile = optarg;
770
break;
771
case 'D':
772
errno = 0;
773
mc.dh_bits = (unsigned int) strtol(optarg, NULL, 10);
774
if (errno){
775
perror("strtol");
776
exit(EXIT_FAILURE);
777
}
778
break;
779
case 'P':
780
mc.priority = optarg;
781
break;
782
case '?':
926
783
default:
927
return ARGP_ERR_UNKNOWN;
928
}
929
return 0;
930
}
931
932
struct argp argp = { .options = options, .parser = parse_opt,
933
.args_doc = "",
934
.doc = "Mandos client -- Get and decrypt"
935
" passwords from a Mandos server" };
936
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
937
if(ret == ARGP_ERR_UNKNOWN){
938
fprintf(stderr, "Unknown error while parsing arguments\n");
939
exitcode = EXIT_FAILURE;
940
goto end;
941
}
942
}
943
944
/* If the interface is down, bring it up */
945
{
946
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
947
messages to mess up the prompt */
948
ret = klogctl(8, NULL, 5);
949
if(ret == -1){
950
perror("klogctl");
951
}
952
953
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
954
if(sd < 0) {
955
perror("socket");
956
exitcode = EXIT_FAILURE;
957
ret = klogctl(7, NULL, 0);
958
if(ret == -1){
959
perror("klogctl");
960
}
961
goto end;
962
}
963
strcpy(network.ifr_name, interface);
964
ret = ioctl(sd, SIOCGIFFLAGS, &network);
965
if(ret == -1){
966
perror("ioctl SIOCGIFFLAGS");
967
ret = klogctl(7, NULL, 0);
968
if(ret == -1){
969
perror("klogctl");
970
}
971
exitcode = EXIT_FAILURE;
972
goto end;
973
}
974
if((network.ifr_flags & IFF_UP) == 0){
975
network.ifr_flags |= IFF_UP;
976
ret = ioctl(sd, SIOCSIFFLAGS, &network);
977
if(ret == -1){
978
perror("ioctl SIOCSIFFLAGS");
979
exitcode = EXIT_FAILURE;
980
ret = klogctl(7, NULL, 0);
981
if(ret == -1){
982
perror("klogctl");
983
}
984
goto end;
985
}
986
}
987
/* sleep checking until interface is running */
988
for(int i=0; i < delay * 4; i++){
989
ret = ioctl(sd, SIOCGIFFLAGS, &network);
990
if(ret == -1){
991
perror("ioctl SIOCGIFFLAGS");
992
} else if(network.ifr_flags & IFF_RUNNING){
993
break;
994
}
995
struct timespec sleeptime = { .tv_nsec = 250000000 };
996
nanosleep(&sleeptime, NULL);
997
}
998
ret = (int)TEMP_FAILURE_RETRY(close(sd));
999
if(ret == -1){
1000
perror("close");
1001
}
1002
/* Restores kernel loglevel to default */
1003
ret = klogctl(7, NULL, 0);
1004
if(ret == -1){
1005
perror("klogctl");
1006
}
1007
}
1008
1009
uid = getuid();
1010
gid = getgid();
1011
1012
setgid(gid);
1013
if(ret == -1){
1014
perror("setgid");
1015
}
1016
1017
ret = setuid(uid);
1018
if(ret == -1){
1019
perror("setuid");
1020
}
1021
1022
ret = init_gnutls_global(&mc, pubkey, seckey);
1023
if(ret == -1){
1024
fprintf(stderr, "init_gnutls_global failed\n");
1025
exitcode = EXIT_FAILURE;
1026
goto end;
1027
} else {
1028
gnutls_initialized = true;
1029
}
1030
1031
if(mkdtemp(tempdir) == NULL){
1032
perror("mkdtemp");
1033
goto end;
1034
}
1035
tempdir_created = true;
1036
1037
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
1038
fprintf(stderr, "init_gpgme failed\n");
1039
exitcode = EXIT_FAILURE;
1040
goto end;
1041
} else {
1042
gpgme_initialized = true;
784
/* getopt_long() has already printed a message about the
785
unrcognized option, so just exit. */
786
exit(EXIT_FAILURE);
787
}
788
}
789
/* Set the global debug flag from the temporary int */
790
debug = debug_int ? true : false;
791
}
792
793
pubkeyfile = combinepath(keydir, pubkeyfile);
794
if (pubkeyfile == NULL){
795
perror("combinepath");
796
exitcode = EXIT_FAILURE;
797
goto end;
798
}
799
800
seckeyfile = combinepath(keydir, seckeyfile);
801
if (seckeyfile == NULL){
802
perror("combinepath");
803
goto end;
1043
804
}
1044
805
1045
806
if_index = (AvahiIfIndex) if_nametoindex(interface);
1046
807
if(if_index == 0){
1047
808
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1048
exitcode = EXIT_FAILURE;
1049
goto end;
809
exit(EXIT_FAILURE);
1050
810
}
1051
811
1052
812
if(connect_to != NULL){
1055
815
char *address = strrchr(connect_to, ':');
1056
816
if(address == NULL){
1057
817
fprintf(stderr, "No colon in address\n");
1058
exitcode = EXIT_FAILURE;
1059
goto end;
1060
}
1061
uint16_t port;
1062
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1063
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1064
or address[numchars+1] != '\0'){
1065
fprintf(stderr, "Bad port number\n");
1066
exitcode = EXIT_FAILURE;
1067
goto end;
1068
}
1069
port = (uint16_t)tmpmax;
818
exit(EXIT_FAILURE);
819
}
820
errno = 0;
821
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
822
if(errno){
823
perror("Bad port number");
824
exit(EXIT_FAILURE);
825
}
1070
826
*address = '\0';
1071
827
address = connect_to;
1072
828
ret = start_mandos_communication(address, port, if_index, &mc);
1073
829
if(ret < 0){
1074
exitcode = EXIT_FAILURE;
830
exit(EXIT_FAILURE);
1075
831
} else {
1076
exitcode = EXIT_SUCCESS;
1077
}
1078
goto end;
1079
}
1080
1081
if(not debug){
832
exit(EXIT_SUCCESS);
833
}
834
}
835
836
/* If the interface is down, bring it up */
837
{
838
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
839
if(sd < 0) {
840
perror("socket");
841
exitcode = EXIT_FAILURE;
842
goto end;
843
}
844
strcpy(network.ifr_name, interface); /* Spurious warning */
845
ret = ioctl(sd, SIOCGIFFLAGS, &network);
846
if(ret == -1){
847
perror("ioctl SIOCGIFFLAGS");
848
exitcode = EXIT_FAILURE;
849
goto end;
850
}
851
if((network.ifr_flags & IFF_UP) == 0){
852
network.ifr_flags |= IFF_UP;
853
ret = ioctl(sd, SIOCSIFFLAGS, &network);
854
if(ret == -1){
855
perror("ioctl SIOCSIFFLAGS");
856
exitcode = EXIT_FAILURE;
857
goto end;
858
}
859
}
860
close(sd);
861
}
862
863
if (not debug){
1082
864
avahi_set_log_function(empty_log);
1083
865
}
1084
866
1087
869
1088
870
/* Allocate main Avahi loop object */
1089
871
mc.simple_poll = avahi_simple_poll_new();
1090
if(mc.simple_poll == NULL) {
872
if (mc.simple_poll == NULL) {
1091
873
fprintf(stderr, "Avahi: Failed to create simple poll"
1092
874
" object.\n");
1093
875
exitcode = EXIT_FAILURE;
1094
876
goto end;
1095
877
}
1096
878
1097
879
{
1098
880
AvahiServerConfig config;
1099
881
/* Do not publish any local Zeroconf records */
1102
884
config.publish_addresses = 0;
1103
885
config.publish_workstation = 0;
1104
886
config.publish_domain = 0;
1105
887
1106
888
/* Allocate a new server */
1107
889
mc.server = avahi_server_new(avahi_simple_poll_get
1108
890
(mc.simple_poll), &config, NULL,
1109
891
NULL, &error);
1110
892
1111
893
/* Free the Avahi configuration data */
1112
894
avahi_server_config_free(&config);
1113
895
}
1114
896
1115
897
/* Check if creating the Avahi server object succeeded */
1116
if(mc.server == NULL) {
898
if (mc.server == NULL) {
1117
899
fprintf(stderr, "Failed to create Avahi server: %s\n",
1118
900
avahi_strerror(error));
1119
901
exitcode = EXIT_FAILURE;
1125
907
AVAHI_PROTO_INET6,
1126
908
"_mandos._tcp", NULL, 0,
1127
909
browse_callback, &mc);
1128
if(sb == NULL) {
910
if (sb == NULL) {
1129
911
fprintf(stderr, "Failed to create service browser: %s\n",
1130
912
avahi_strerror(avahi_server_errno(mc.server)));
1131
913
exitcode = EXIT_FAILURE;
1133
915
}
1134
916
1135
917
/* Run the main loop */
1136
1137
if(debug){
918
919
if (debug){
1138
920
fprintf(stderr, "Starting Avahi loop search\n");
1139
921
}
1140
922
1141
923
avahi_simple_poll_loop(mc.simple_poll);
1142
924
1143
925
end:
1144
1145
if(debug){
926
927
if (debug){
1146
928
fprintf(stderr, "%s exiting\n", argv[0]);
1147
929
}
1148
930
1149
931
/* Cleanup things */
1150
if(sb != NULL)
932
if (sb != NULL)
1151
933
avahi_s_service_browser_free(sb);
1152
934
1153
if(mc.server != NULL)
935
if (mc.server != NULL)
1154
936
avahi_server_free(mc.server);
1155
1156
if(mc.simple_poll != NULL)
937
938
if (mc.simple_poll != NULL)
1157
939
avahi_simple_poll_free(mc.simple_poll);
1158
1159
if(gnutls_initialized){
1160
gnutls_certificate_free_credentials(mc.cred);
1161
gnutls_global_deinit();
1162
gnutls_dh_params_deinit(mc.dh_params);
1163
}
1164
1165
if(gpgme_initialized){
1166
gpgme_release(mc.ctx);
1167
}
1168
1169
/* Removes the temp directory used by GPGME */
1170
if(tempdir_created){
1171
DIR *d;
1172
struct dirent *direntry;
1173
d = opendir(tempdir);
1174
if(d == NULL){
1175
if(errno != ENOENT){
1176
perror("opendir");
1177
}
1178
} else {
1179
while(true){
1180
direntry = readdir(d);
1181
if(direntry == NULL){
1182
break;
1183
}
1184
/* Skip "." and ".." */
1185
if(direntry->d_name[0] == '.'
1186
and (direntry->d_name[1] == '\0'
1187
or (direntry->d_name[1] == '.'
1188
and direntry->d_name[2] == '\0'))){
1189
continue;
1190
}
1191
char *fullname = NULL;
1192
ret = asprintf(&fullname, "%s/%s", tempdir,
1193
direntry->d_name);
1194
if(ret < 0){
1195
perror("asprintf");
1196
continue;
1197
}
1198
ret = remove(fullname);
1199
if(ret == -1){
1200
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1201
strerror(errno));
1202
}
1203
free(fullname);
1204
}
1205
closedir(d);
1206
}
1207
ret = rmdir(tempdir);
1208
if(ret == -1 and errno != ENOENT){
1209
perror("rmdir");
1210
}
1211
}
940
free(pubkeyfile);
941
free(seckeyfile);
1212
942
1213
943
return exitcode;
1214
944
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0