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- Committer: Teddy Hogeborn
- Date: 2009-02-03 22:41:49 UTC
- Revision ID: teddy@fukt.bsnet.se-20090203224149-fc1301jojmusbzlx
* Makefile (run-server): Use "--no-dbus" unconditionally.
* initramfs-tools-script: Correct tests for writable "/conf/conf.d".
* mandos: Add process ID number to logging messages.
(IPv6_TCPServer.server_bind): Use plain "raise".
(main): Do not try to handle SIGSEGV; it does not work. Use plain
"raise". Log KeyboardInterrupt and server exit.
* initramfs-tools-script: Correct tests for writable "/conf/conf.d".
* mandos: Add process ID number to logging messages.
(IPv6_TCPServer.server_bind): Use plain "raise".
(main): Do not try to handle SIGSEGV; it does not work. Use plain
"raise". Log KeyboardInterrupt and server exit.
- files added:
- .bzr-builddeb
- debian
- debian/po
- files renamed:
- server.py => mandos
- server.conf => mandos.conf
- plugbasedclient.c => plugin-runner.c
- plugins.d/mandosclient.c => plugins.d/mandos-client.c
- plugins.d/passprompt.c => plugins.d/password-prompt.c
- files modified:
- Makefile
added
removed
plugins.d/mandos-client.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 © 2007-2008 Teddy Hogeborn & Björn Påhlsson
12
* Copyright © 2008,2009 Teddy Hogeborn
13
* Copyright © 2008,2009 Björn Påhlsson
13
14
*
14
15
* This program is free software: you can redistribute it and/or
15
16
* modify it under the terms of the GNU General Public License as
32
33
#define _LARGEFILE_SOURCE
33
34
#define _FILE_OFFSET_BITS 64
34
35
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
36
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
36
37
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 */
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() */
44
65
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
45
SIOCSIFFLAGS */
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() */
46
79
80
/* Avahi */
81
/* All Avahi types, constants and functions
82
Avahi*, avahi_*,
83
AVAHI_* */
47
84
#include <avahi-core/core.h>
48
85
#include <avahi-core/lookup.h>
49
86
#include <avahi-core/log.h>
51
88
#include <avahi-common/malloc.h>
52
89
#include <avahi-common/error.h>
53
90
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 */
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 */
60
100
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 */
68
#include <argp.h> /* struct argp_option,
69
struct argp_state, struct argp,
70
argp_parse() */
71
101
/* GPGME */
72
#include <errno.h> /* perror() */
73
#include <gpgme.h>
102
#include <gpgme.h> /* All GPGME types, constants and
103
functions:
104
gpgme_*
105
GPGME_PROTOCOL_OpenPGP,
106
GPG_ERR_NO_* */
74
107
75
108
#define BUFFER_SIZE 256
76
109
110
#define PATHDIR "/conf/conf.d/mandos"
111
#define SECKEY "seckey.txt"
112
#define PUBKEY "pubkey.txt"
113
77
114
bool debug = false;
78
static const char *keydir = "/conf/conf.d/mandos";
79
115
static const char mandos_protocol_version[] = "1";
80
const char *argp_program_version = "mandosclient 0.9";
116
const char *argp_program_version = "mandos-client " VERSION;
81
117
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
82
118
83
119
/* Used for passing in values through the Avahi callback functions */
88
124
unsigned int dh_bits;
89
125
gnutls_dh_params_t dh_params;
90
126
const char *priority;
127
gpgme_ctx_t ctx;
91
128
} mandos_context;
92
129
93
130
/*
97
134
*/
98
135
size_t adjustbuffer(char **buffer, size_t buffer_length,
99
136
size_t buffer_capacity){
100
if (buffer_length + BUFFER_SIZE > buffer_capacity){
137
if(buffer_length + BUFFER_SIZE > buffer_capacity){
101
138
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
102
if (buffer == NULL){
139
if(buffer == NULL){
103
140
return 0;
104
141
}
105
142
buffer_capacity += BUFFER_SIZE;
108
145
}
109
146
110
147
/*
111
* Decrypt OpenPGP data using keyrings in HOMEDIR.
112
* Returns -1 on error
148
* Initialize GPGME.
113
149
*/
114
static ssize_t pgp_packet_decrypt (const char *cryptotext,
115
size_t crypto_size,
116
char **plaintext,
117
const char *homedir){
118
gpgme_data_t dh_crypto, dh_plain;
119
gpgme_ctx_t ctx;
150
static bool init_gpgme(mandos_context *mc, const char *seckey,
151
const char *pubkey, const char *tempdir){
152
int ret;
120
153
gpgme_error_t rc;
121
ssize_t ret;
122
size_t plaintext_capacity = 0;
123
ssize_t plaintext_length = 0;
124
154
gpgme_engine_info_t engine_info;
125
155
126
if (debug){
127
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
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");
128
194
}
129
195
130
196
/* Init GPGME */
131
197
gpgme_check_version(NULL);
132
198
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
133
if (rc != GPG_ERR_NO_ERROR){
199
if(rc != GPG_ERR_NO_ERROR){
134
200
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
135
201
gpgme_strsource(rc), gpgme_strerror(rc));
136
return -1;
202
return false;
137
203
}
138
204
139
/* Set GPGME home directory for the OpenPGP engine only */
140
rc = gpgme_get_engine_info (&engine_info);
141
if (rc != GPG_ERR_NO_ERROR){
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){
142
208
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
143
209
gpgme_strsource(rc), gpgme_strerror(rc));
144
return -1;
210
return false;
145
211
}
146
212
while(engine_info != NULL){
147
213
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
148
214
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
149
engine_info->file_name, homedir);
215
engine_info->file_name, tempdir);
150
216
break;
151
217
}
152
218
engine_info = engine_info->next;
153
219
}
154
220
if(engine_info == NULL){
155
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
156
return -1;
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");
157
256
}
158
257
159
258
/* Create new GPGME data buffer from memory cryptotext */
160
259
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
161
260
0);
162
if (rc != GPG_ERR_NO_ERROR){
261
if(rc != GPG_ERR_NO_ERROR){
163
262
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
164
263
gpgme_strsource(rc), gpgme_strerror(rc));
165
264
return -1;
167
266
168
267
/* Create new empty GPGME data buffer for the plaintext */
169
268
rc = gpgme_data_new(&dh_plain);
170
if (rc != GPG_ERR_NO_ERROR){
269
if(rc != GPG_ERR_NO_ERROR){
171
270
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
172
271
gpgme_strsource(rc), gpgme_strerror(rc));
173
272
gpgme_data_release(dh_crypto);
174
273
return -1;
175
274
}
176
275
177
/* Create new GPGME "context" */
178
rc = gpgme_new(&ctx);
179
if (rc != GPG_ERR_NO_ERROR){
180
fprintf(stderr, "bad gpgme_new: %s: %s\n",
181
gpgme_strsource(rc), gpgme_strerror(rc));
182
plaintext_length = -1;
183
goto decrypt_end;
184
}
185
186
276
/* Decrypt data from the cryptotext data buffer to the plaintext
187
277
data buffer */
188
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
189
if (rc != GPG_ERR_NO_ERROR){
278
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
279
if(rc != GPG_ERR_NO_ERROR){
190
280
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
191
281
gpgme_strsource(rc), gpgme_strerror(rc));
192
282
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
}
193
311
goto decrypt_end;
194
312
}
195
313
197
315
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
198
316
}
199
317
200
if (debug){
201
gpgme_decrypt_result_t result;
202
result = gpgme_op_decrypt_result(ctx);
203
if (result == NULL){
204
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
205
} else {
206
fprintf(stderr, "Unsupported algorithm: %s\n",
207
result->unsupported_algorithm);
208
fprintf(stderr, "Wrong key usage: %d\n",
209
result->wrong_key_usage);
210
if(result->file_name != NULL){
211
fprintf(stderr, "File name: %s\n", result->file_name);
212
}
213
gpgme_recipient_t recipient;
214
recipient = result->recipients;
215
if(recipient){
216
while(recipient != NULL){
217
fprintf(stderr, "Public key algorithm: %s\n",
218
gpgme_pubkey_algo_name(recipient->pubkey_algo));
219
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
220
fprintf(stderr, "Secret key available: %s\n",
221
recipient->status == GPG_ERR_NO_SECKEY
222
? "No" : "Yes");
223
recipient = recipient->next;
224
}
225
}
226
}
227
}
228
229
318
/* Seek back to the beginning of the GPGME plaintext data buffer */
230
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
231
perror("pgpme_data_seek");
319
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
320
perror("gpgme_data_seek");
232
321
plaintext_length = -1;
233
322
goto decrypt_end;
234
323
}
238
327
plaintext_capacity = adjustbuffer(plaintext,
239
328
(size_t)plaintext_length,
240
329
plaintext_capacity);
241
if (plaintext_capacity == 0){
330
if(plaintext_capacity == 0){
242
331
perror("adjustbuffer");
243
332
plaintext_length = -1;
244
333
goto decrypt_end;
247
336
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
248
337
BUFFER_SIZE);
249
338
/* Print the data, if any */
250
if (ret == 0){
339
if(ret == 0){
251
340
/* EOF */
252
341
break;
253
342
}
258
347
}
259
348
plaintext_length += ret;
260
349
}
261
350
262
351
if(debug){
263
352
fprintf(stderr, "Decrypted password is: ");
264
353
for(ssize_t i = 0; i < plaintext_length; i++){
277
366
return plaintext_length;
278
367
}
279
368
280
static const char * safer_gnutls_strerror (int value) {
281
const char *ret = gnutls_strerror (value);
282
if (ret == NULL)
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)
283
373
ret = "(unknown)";
284
374
return ret;
285
375
}
291
381
}
292
382
293
383
static int init_gnutls_global(mandos_context *mc,
294
const char *pubkeyfile,
295
const char *seckeyfile){
384
const char *pubkeyfilename,
385
const char *seckeyfilename){
296
386
int ret;
297
387
298
388
if(debug){
299
389
fprintf(stderr, "Initializing GnuTLS\n");
300
390
}
301
302
if ((ret = gnutls_global_init ())
303
!= GNUTLS_E_SUCCESS) {
304
fprintf (stderr, "GnuTLS global_init: %s\n",
305
safer_gnutls_strerror(ret));
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));
306
396
return -1;
307
397
}
308
398
309
if (debug){
399
if(debug){
310
400
/* "Use a log level over 10 to enable all debugging options."
311
401
* - GnuTLS manual
312
402
*/
315
405
}
316
406
317
407
/* OpenPGP credentials */
318
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
319
!= GNUTLS_E_SUCCESS) {
320
fprintf (stderr, "GnuTLS memory error: %s\n",
321
safer_gnutls_strerror(ret));
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();
322
416
return -1;
323
417
}
324
418
325
419
if(debug){
326
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
327
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
328
seckeyfile);
420
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
421
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
422
seckeyfilename);
329
423
}
330
424
331
425
ret = gnutls_certificate_set_openpgp_key_file
332
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
333
if (ret != GNUTLS_E_SUCCESS) {
426
(mc->cred, pubkeyfilename, seckeyfilename,
427
GNUTLS_OPENPGP_FMT_BASE64);
428
if(ret != GNUTLS_E_SUCCESS) {
334
429
fprintf(stderr,
335
430
"Error[%d] while reading the OpenPGP key pair ('%s',"
336
" '%s')\n", ret, pubkeyfile, seckeyfile);
337
fprintf(stdout, "The GnuTLS error is: %s\n",
431
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
432
fprintf(stderr, "The GnuTLS error is: %s\n",
338
433
safer_gnutls_strerror(ret));
339
return -1;
434
goto globalfail;
340
435
}
341
436
342
437
/* GnuTLS server initialization */
343
438
ret = gnutls_dh_params_init(&mc->dh_params);
344
if (ret != GNUTLS_E_SUCCESS) {
345
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
346
" %s\n", safer_gnutls_strerror(ret));
347
return -1;
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;
348
443
}
349
444
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
350
if (ret != GNUTLS_E_SUCCESS) {
351
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
352
safer_gnutls_strerror(ret));
353
return -1;
445
if(ret != GNUTLS_E_SUCCESS) {
446
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
447
safer_gnutls_strerror(ret));
448
goto globalfail;
354
449
}
355
450
356
451
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
357
452
358
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;
359
461
}
360
462
361
463
static int init_gnutls_session(mandos_context *mc,
363
465
int ret;
364
466
/* GnuTLS session creation */
365
467
ret = gnutls_init(session, GNUTLS_SERVER);
366
if (ret != GNUTLS_E_SUCCESS){
468
if(ret != GNUTLS_E_SUCCESS){
367
469
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
368
470
safer_gnutls_strerror(ret));
369
471
}
371
473
{
372
474
const char *err;
373
475
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
374
if (ret != GNUTLS_E_SUCCESS) {
476
if(ret != GNUTLS_E_SUCCESS) {
375
477
fprintf(stderr, "Syntax error at: %s\n", err);
376
478
fprintf(stderr, "GnuTLS error: %s\n",
377
479
safer_gnutls_strerror(ret));
480
gnutls_deinit(*session);
378
481
return -1;
379
482
}
380
483
}
381
484
382
485
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
383
486
mc->cred);
384
if (ret != GNUTLS_E_SUCCESS) {
487
if(ret != GNUTLS_E_SUCCESS) {
385
488
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
386
489
safer_gnutls_strerror(ret));
490
gnutls_deinit(*session);
387
491
return -1;
388
492
}
389
493
390
494
/* ignore client certificate if any. */
391
gnutls_certificate_server_set_request (*session,
392
GNUTLS_CERT_IGNORE);
495
gnutls_certificate_server_set_request(*session,
496
GNUTLS_CERT_IGNORE);
393
497
394
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
498
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
395
499
396
500
return 0;
397
501
}
405
509
AvahiIfIndex if_index,
406
510
mandos_context *mc){
407
511
int ret, tcp_sd;
512
ssize_t sret;
408
513
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
409
514
char *buffer = NULL;
410
515
char *decrypted_buffer;
416
521
char interface[IF_NAMESIZE];
417
522
gnutls_session_t session;
418
523
419
ret = init_gnutls_session (mc, &session);
420
if (ret != 0){
524
ret = init_gnutls_session(mc, &session);
525
if(ret != 0){
421
526
return -1;
422
527
}
423
528
424
529
if(debug){
425
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
426
ip, port);
530
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
531
"\n", ip, port);
427
532
}
428
533
429
534
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
431
536
perror("socket");
432
537
return -1;
433
538
}
434
539
435
540
if(debug){
436
541
if(if_indextoname((unsigned int)if_index, interface) == NULL){
437
542
perror("if_indextoname");
440
545
fprintf(stderr, "Binding to interface %s\n", interface);
441
546
}
442
547
443
memset(&to,0,sizeof(to)); /* Spurious warning */
548
memset(&to, 0, sizeof(to));
444
549
to.in6.sin6_family = AF_INET6;
445
550
/* It would be nice to have a way to detect if we were passed an
446
551
IPv4 address here. Now we assume an IPv6 address. */
447
552
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
448
if (ret < 0 ){
553
if(ret < 0 ){
449
554
perror("inet_pton");
450
555
return -1;
451
556
}
453
558
fprintf(stderr, "Bad address: %s\n", ip);
454
559
return -1;
455
560
}
456
to.in6.sin6_port = htons(port); /* Spurious warning */
561
to.in6.sin6_port = htons(port); /* Spurious warnings from
562
-Wconversion and
563
-Wunreachable-code */
457
564
458
565
to.in6.sin6_scope_id = (uint32_t)if_index;
459
566
460
567
if(debug){
461
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
568
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
569
port);
462
570
char addrstr[INET6_ADDRSTRLEN] = "";
463
571
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
464
572
sizeof(addrstr)) == NULL){
471
579
}
472
580
473
581
ret = connect(tcp_sd, &to.in, sizeof(to));
474
if (ret < 0){
582
if(ret < 0){
475
583
perror("connect");
476
584
return -1;
477
585
}
478
586
479
587
const char *out = mandos_protocol_version;
480
588
written = 0;
481
while (true){
589
while(true){
482
590
size_t out_size = strlen(out);
483
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
591
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
484
592
out_size - written));
485
if (ret == -1){
593
if(ret == -1){
486
594
perror("write");
487
595
retval = -1;
488
596
goto mandos_end;
491
599
if(written < out_size){
492
600
continue;
493
601
} else {
494
if (out == mandos_protocol_version){
602
if(out == mandos_protocol_version){
495
603
written = 0;
496
604
out = "\r\n";
497
605
} else {
499
607
}
500
608
}
501
609
}
502
610
503
611
if(debug){
504
612
fprintf(stderr, "Establishing TLS session with %s\n", ip);
505
613
}
506
614
507
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
508
509
ret = gnutls_handshake (session);
510
511
if (ret != GNUTLS_E_SUCCESS){
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){
512
622
if(debug){
513
623
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
514
gnutls_perror (ret);
624
gnutls_perror(ret);
515
625
}
516
626
retval = -1;
517
627
goto mandos_end;
523
633
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
524
634
ip);
525
635
}
526
636
527
637
while(true){
528
638
buffer_capacity = adjustbuffer(&buffer, buffer_length,
529
639
buffer_capacity);
530
if (buffer_capacity == 0){
640
if(buffer_capacity == 0){
531
641
perror("adjustbuffer");
532
642
retval = -1;
533
643
goto mandos_end;
534
644
}
535
645
536
ret = gnutls_record_recv(session, buffer+buffer_length,
537
BUFFER_SIZE);
538
if (ret == 0){
646
sret = gnutls_record_recv(session, buffer+buffer_length,
647
BUFFER_SIZE);
648
if(sret == 0){
539
649
break;
540
650
}
541
if (ret < 0){
542
switch(ret){
651
if(sret < 0){
652
switch(sret){
543
653
case GNUTLS_E_INTERRUPTED:
544
654
case GNUTLS_E_AGAIN:
545
655
break;
546
656
case GNUTLS_E_REHANDSHAKE:
547
ret = gnutls_handshake (session);
548
if (ret < 0){
657
do{
658
ret = gnutls_handshake(session);
659
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
660
if(ret < 0){
549
661
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
550
gnutls_perror (ret);
662
gnutls_perror(ret);
551
663
retval = -1;
552
664
goto mandos_end;
553
665
}
556
668
fprintf(stderr, "Unknown error while reading data from"
557
669
" encrypted session with Mandos server\n");
558
670
retval = -1;
559
gnutls_bye (session, GNUTLS_SHUT_RDWR);
671
gnutls_bye(session, GNUTLS_SHUT_RDWR);
560
672
goto mandos_end;
561
673
}
562
674
} else {
563
buffer_length += (size_t) ret;
675
buffer_length += (size_t) sret;
564
676
}
565
677
}
566
678
568
680
fprintf(stderr, "Closing TLS session\n");
569
681
}
570
682
571
gnutls_bye (session, GNUTLS_SHUT_RDWR);
683
gnutls_bye(session, GNUTLS_SHUT_RDWR);
572
684
573
if (buffer_length > 0){
574
decrypted_buffer_size = pgp_packet_decrypt(buffer,
685
if(buffer_length > 0){
686
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
575
687
buffer_length,
576
&decrypted_buffer,
577
keydir);
578
if (decrypted_buffer_size >= 0){
688
&decrypted_buffer);
689
if(decrypted_buffer_size >= 0){
579
690
written = 0;
580
691
while(written < (size_t) decrypted_buffer_size){
581
ret = (int)fwrite (decrypted_buffer + written, 1,
582
(size_t)decrypted_buffer_size - written,
583
stdout);
692
ret = (int)fwrite(decrypted_buffer + written, 1,
693
(size_t)decrypted_buffer_size - written,
694
stdout);
584
695
if(ret == 0 and ferror(stdout)){
585
696
if(debug){
586
697
fprintf(stderr, "Error writing encrypted data: %s\n",
595
706
} else {
596
707
retval = -1;
597
708
}
709
} else {
710
retval = -1;
598
711
}
599
712
600
713
/* Shutdown procedure */
601
714
602
715
mandos_end:
603
716
free(buffer);
604
close(tcp_sd);
605
gnutls_deinit (session);
606
gnutls_certificate_free_credentials (mc->cred);
607
gnutls_global_deinit ();
717
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
718
if(ret == -1){
719
perror("close");
720
}
721
gnutls_deinit(session);
608
722
return retval;
609
723
}
610
724
623
737
flags,
624
738
void* userdata) {
625
739
mandos_context *mc = userdata;
626
assert(r); /* Spurious warning */
740
assert(r);
627
741
628
742
/* Called whenever a service has been resolved successfully or
629
743
timed out */
630
744
631
switch (event) {
745
switch(event) {
632
746
default:
633
747
case AVAHI_RESOLVER_FAILURE:
634
748
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
641
755
char ip[AVAHI_ADDRESS_STR_MAX];
642
756
avahi_address_snprint(ip, sizeof(ip), address);
643
757
if(debug){
644
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
645
" port %d\n", name, host_name, ip, interface, port);
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);
646
761
}
647
762
int ret = start_mandos_communication(ip, port, interface, mc);
648
if (ret == 0){
649
exit(EXIT_SUCCESS);
763
if(ret == 0){
764
avahi_simple_poll_quit(mc->simple_poll);
650
765
}
651
766
}
652
767
}
664
779
flags,
665
780
void* userdata) {
666
781
mandos_context *mc = userdata;
667
assert(b); /* Spurious warning */
782
assert(b);
668
783
669
784
/* Called whenever a new services becomes available on the LAN or
670
785
is removed from the LAN */
671
786
672
switch (event) {
787
switch(event) {
673
788
default:
674
789
case AVAHI_BROWSER_FAILURE:
675
790
684
799
the callback function is called the Avahi server will free the
685
800
resolver for us. */
686
801
687
if (!(avahi_s_service_resolver_new(mc->server, interface,
802
if(!(avahi_s_service_resolver_new(mc->server, interface,
688
803
protocol, name, type, domain,
689
804
AVAHI_PROTO_INET6, 0,
690
805
resolve_callback, mc)))
704
819
}
705
820
}
706
821
707
/* Combines file name and path and returns the malloced new
708
string. some sane checks could/should be added */
709
static const char *combinepath(const char *first, const char *second){
710
size_t f_len = strlen(first);
711
size_t s_len = strlen(second);
712
char *tmp = malloc(f_len + s_len + 2);
713
if (tmp == NULL){
714
return NULL;
715
}
716
if(f_len > 0){
717
memcpy(tmp, first, f_len); /* Spurious warning */
718
}
719
tmp[f_len] = '/';
720
if(s_len > 0){
721
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
722
}
723
tmp[f_len + 1 + s_len] = '\0';
724
return tmp;
725
}
726
727
728
822
int main(int argc, char *argv[]){
729
823
AvahiSServiceBrowser *sb = NULL;
730
824
int error;
731
825
int ret;
826
intmax_t tmpmax;
827
int numchars;
732
828
int exitcode = EXIT_SUCCESS;
733
829
const char *interface = "eth0";
734
830
struct ifreq network;
736
832
uid_t uid;
737
833
gid_t gid;
738
834
char *connect_to = NULL;
835
char tempdir[] = "/tmp/mandosXXXXXX";
836
bool tempdir_created = false;
739
837
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
740
const char *pubkeyfile = "pubkey.txt";
741
const char *seckeyfile = "seckey.txt";
838
const char *seckey = PATHDIR "/" SECKEY;
839
const char *pubkey = PATHDIR "/" PUBKEY;
840
742
841
mandos_context mc = { .simple_poll = NULL, .server = NULL,
743
.dh_bits = 1024, .priority = "SECURE256"};
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;
744
847
745
848
{
746
849
struct argp_option options[] = {
747
850
{ .name = "debug", .key = 128,
748
851
.doc = "Debug mode", .group = 3 },
749
852
{ .name = "connect", .key = 'c',
750
.arg = "IP",
751
.doc = "Connect directly to a sepcified mandos server",
853
.arg = "ADDRESS:PORT",
854
.doc = "Connect directly to a specific Mandos server",
752
855
.group = 1 },
753
856
{ .name = "interface", .key = 'i',
754
.arg = "INTERFACE",
755
.doc = "Interface that Avahi will conntect through",
756
.group = 1 },
757
{ .name = "keydir", .key = 'd',
758
.arg = "KEYDIR",
759
.doc = "Directory where the openpgp keyring is",
857
.arg = "NAME",
858
.doc = "Interface that will be used to search for Mandos"
859
" servers",
760
860
.group = 1 },
761
861
{ .name = "seckey", .key = 's',
762
.arg = "SECKEY",
763
.doc = "Secret openpgp key for gnutls authentication",
862
.arg = "FILE",
863
.doc = "OpenPGP secret key file base name",
764
864
.group = 1 },
765
865
{ .name = "pubkey", .key = 'p',
766
.arg = "PUBKEY",
767
.doc = "Public openpgp key for gnutls authentication",
866
.arg = "FILE",
867
.doc = "OpenPGP public key file base name",
768
868
.group = 2 },
769
869
{ .name = "dh-bits", .key = 129,
770
870
.arg = "BITS",
771
.doc = "dh-bits to use in gnutls communication",
871
.doc = "Bit length of the prime number used in the"
872
" Diffie-Hellman key exchange",
772
873
.group = 2 },
773
874
{ .name = "priority", .key = 130,
774
.arg = "PRIORITY",
775
.doc = "GNUTLS priority", .group = 1 },
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 },
776
882
{ .name = NULL }
777
883
};
778
779
884
780
error_t parse_opt (int key, char *arg,
781
struct argp_state *state) {
782
/* Get the INPUT argument from `argp_parse', which we know is
783
a pointer to our plugin list pointer. */
784
switch (key) {
785
case 128:
885
error_t parse_opt(int key, char *arg,
886
struct argp_state *state) {
887
switch(key) {
888
case 128: /* --debug */
786
889
debug = true;
787
890
break;
788
case 'c':
891
case 'c': /* --connect */
789
892
connect_to = arg;
790
893
break;
791
case 'i':
894
case 'i': /* --interface */
792
895
interface = arg;
793
896
break;
794
case 'd':
795
keydir = arg;
796
break;
797
case 's':
798
seckeyfile = arg;
799
break;
800
case 'p':
801
pubkeyfile = arg;
802
break;
803
case 129:
804
errno = 0;
805
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
806
if (errno){
807
perror("strtol");
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");
808
908
exit(EXIT_FAILURE);
809
909
}
910
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
810
911
break;
811
case 130:
912
case 130: /* --priority */
812
913
mc.priority = arg;
813
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;
814
922
case ARGP_KEY_ARG:
815
argp_usage (state);
923
argp_usage(state);
924
case ARGP_KEY_END:
816
925
break;
817
case ARGP_KEY_END:
818
break;
819
926
default:
820
927
return ARGP_ERR_UNKNOWN;
821
928
}
822
929
return 0;
823
930
}
824
931
825
932
struct argp argp = { .options = options, .parser = parse_opt,
826
933
.args_doc = "",
827
934
.doc = "Mandos client -- Get and decrypt"
828
" passwords from mandos server" };
829
argp_parse (&argp, argc, argv, 0, 0, NULL);
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
}
830
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
}
831
952
832
pubkeyfile = combinepath(keydir, pubkeyfile);
833
if (pubkeyfile == NULL){
834
perror("combinepath");
835
exitcode = EXIT_FAILURE;
836
goto end;
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
}
837
1007
}
838
1008
839
seckeyfile = combinepath(keydir, seckeyfile);
840
if (seckeyfile == NULL){
841
perror("combinepath");
842
goto end;
843
}
844
845
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
846
if (ret == -1){
847
fprintf(stderr, "init_gnutls_global\n");
848
goto end;
849
}
850
851
1009
uid = getuid();
852
1010
gid = getgid();
853
1011
1012
setgid(gid);
1013
if(ret == -1){
1014
perror("setgid");
1015
}
1016
854
1017
ret = setuid(uid);
855
if (ret == -1){
1018
if(ret == -1){
856
1019
perror("setuid");
857
1020
}
858
1021
859
setgid(gid);
860
if (ret == -1){
861
perror("setgid");
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;
862
1043
}
863
1044
864
1045
if_index = (AvahiIfIndex) if_nametoindex(interface);
865
1046
if(if_index == 0){
866
1047
fprintf(stderr, "No such interface: \"%s\"\n", interface);
867
exit(EXIT_FAILURE);
1048
exitcode = EXIT_FAILURE;
1049
goto end;
868
1050
}
869
1051
870
1052
if(connect_to != NULL){
876
1058
exitcode = EXIT_FAILURE;
877
1059
goto end;
878
1060
}
879
errno = 0;
880
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
881
if(errno){
882
perror("Bad port number");
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");
883
1066
exitcode = EXIT_FAILURE;
884
1067
goto end;
885
1068
}
1069
port = (uint16_t)tmpmax;
886
1070
*address = '\0';
887
1071
address = connect_to;
888
1072
ret = start_mandos_communication(address, port, if_index, &mc);
894
1078
goto end;
895
1079
}
896
1080
897
/* If the interface is down, bring it up */
898
{
899
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
900
if(sd < 0) {
901
perror("socket");
902
exitcode = EXIT_FAILURE;
903
goto end;
904
}
905
strcpy(network.ifr_name, interface); /* Spurious warning */
906
ret = ioctl(sd, SIOCGIFFLAGS, &network);
907
if(ret == -1){
908
perror("ioctl SIOCGIFFLAGS");
909
exitcode = EXIT_FAILURE;
910
goto end;
911
}
912
if((network.ifr_flags & IFF_UP) == 0){
913
network.ifr_flags |= IFF_UP;
914
ret = ioctl(sd, SIOCSIFFLAGS, &network);
915
if(ret == -1){
916
perror("ioctl SIOCSIFFLAGS");
917
exitcode = EXIT_FAILURE;
918
goto end;
919
}
920
}
921
close(sd);
922
}
923
924
if (not debug){
1081
if(not debug){
925
1082
avahi_set_log_function(empty_log);
926
1083
}
927
1084
930
1087
931
1088
/* Allocate main Avahi loop object */
932
1089
mc.simple_poll = avahi_simple_poll_new();
933
if (mc.simple_poll == NULL) {
1090
if(mc.simple_poll == NULL) {
934
1091
fprintf(stderr, "Avahi: Failed to create simple poll"
935
1092
" object.\n");
936
1093
exitcode = EXIT_FAILURE;
937
1094
goto end;
938
1095
}
939
1096
940
1097
{
941
1098
AvahiServerConfig config;
942
1099
/* Do not publish any local Zeroconf records */
945
1102
config.publish_addresses = 0;
946
1103
config.publish_workstation = 0;
947
1104
config.publish_domain = 0;
948
1105
949
1106
/* Allocate a new server */
950
1107
mc.server = avahi_server_new(avahi_simple_poll_get
951
1108
(mc.simple_poll), &config, NULL,
952
1109
NULL, &error);
953
1110
954
1111
/* Free the Avahi configuration data */
955
1112
avahi_server_config_free(&config);
956
1113
}
957
1114
958
1115
/* Check if creating the Avahi server object succeeded */
959
if (mc.server == NULL) {
1116
if(mc.server == NULL) {
960
1117
fprintf(stderr, "Failed to create Avahi server: %s\n",
961
1118
avahi_strerror(error));
962
1119
exitcode = EXIT_FAILURE;
968
1125
AVAHI_PROTO_INET6,
969
1126
"_mandos._tcp", NULL, 0,
970
1127
browse_callback, &mc);
971
if (sb == NULL) {
1128
if(sb == NULL) {
972
1129
fprintf(stderr, "Failed to create service browser: %s\n",
973
1130
avahi_strerror(avahi_server_errno(mc.server)));
974
1131
exitcode = EXIT_FAILURE;
976
1133
}
977
1134
978
1135
/* Run the main loop */
979
980
if (debug){
1136
1137
if(debug){
981
1138
fprintf(stderr, "Starting Avahi loop search\n");
982
1139
}
983
1140
984
1141
avahi_simple_poll_loop(mc.simple_poll);
985
1142
986
1143
end:
987
988
if (debug){
1144
1145
if(debug){
989
1146
fprintf(stderr, "%s exiting\n", argv[0]);
990
1147
}
991
1148
992
1149
/* Cleanup things */
993
if (sb != NULL)
1150
if(sb != NULL)
994
1151
avahi_s_service_browser_free(sb);
995
1152
996
if (mc.server != NULL)
1153
if(mc.server != NULL)
997
1154
avahi_server_free(mc.server);
998
999
if (mc.simple_poll != NULL)
1155
1156
if(mc.simple_poll != NULL)
1000
1157
avahi_simple_poll_free(mc.simple_poll);
1001
free(pubkeyfile);
1002
free(seckeyfile);
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
}
1003
1212
1004
1213
return exitcode;
1005
1214
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0