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» Revision
24.1.26
(compared to revision 237.2.45)
: plugins.d/password-request.c
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- Committer: Björn Påhlsson
- Date: 2008-08-09 04:42:39 UTC
- mto: (237.7.1 mandos) (24.1.154 mandos)
- mto: This revision was merged to the branch mainline in revision 53.
- Revision ID: belorn@braxen-20080809044239-a1ub3rvi88ydwvla
tally count of used symbols
return codes from functions checked.
return codes from functions checked.
- files added:
- network-protocol.txt
- files removed:
- .bzr-builddeb
- debian
- debian/po
- files renamed:
- plugin-runner.c => mandos-client.c
- plugin-runner.xml => mandos-client.xml
- plugins.d/mandos-client.c => plugins.d/password-request.c
- plugins.d/mandos-client.xml => plugins.d/password-request.xml
- files modified:
- Makefile
added
removed
plugins.d/password-request.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 */
37
#include <stdio.h> /* fprintf(), stderr, fwrite(), stdout, ferror() */
40
38
#include <stdint.h> /* uint16_t, uint32_t */
41
39
#include <stddef.h> /* NULL, size_t, ssize_t */
42
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
43
srand() */
40
#include <stdlib.h> /* free() */
44
41
#include <stdbool.h> /* bool, true */
45
#include <string.h> /* memset(), strcmp(), strlen(),
46
strerror(), asprintf(), strcpy() */
47
#include <sys/ioctl.h> /* ioctl */
42
#include <string.h> /* memset(), strcmp(), strlen, strerror() */
43
#include <sys/ioctl.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
44
SIOCSIFFLAGS */
48
45
#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(),
52
DIR */
53
#include <sys/stat.h> /* open() */
46
sockaddr_in6, PF_INET6, SOCK_STREAM, INET6_ADDRSTRLEN */
54
47
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
55
48
struct in6_addr, inet_pton(),
56
49
connect() */
57
#include <fcntl.h> /* open() */
58
#include <dirent.h> /* opendir(), struct dirent, readdir()
59
*/
60
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
61
#include <assert.h> /* assert() */
62
#include <errno.h> /* perror(), errno */
63
#include <time.h> /* time() */
50
#include <assert.h>
51
#include <errno.h> /* perror() */
52
#include <time.h>
64
53
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
65
54
SIOCSIFFLAGS, if_indextoname(),
66
55
if_nametoindex(), IF_NAMESIZE */
56
#include <unistd.h> /* close(), SEEK_SET, off_t, write()*/
67
57
#include <netinet/in.h>
68
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
69
getuid(), getgid(), setuid(),
70
setgid() */
71
58
#include <arpa/inet.h> /* inet_pton(), htons */
72
#include <iso646.h> /* not, and, or */
73
#include <argp.h> /* struct argp_option, error_t, struct
74
argp_state, struct argp,
75
argp_parse(), ARGP_KEY_ARG,
76
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
59
#include <iso646.h> /* not */
60
#include <argp.h> /* struct argp_option,
61
struct argp_state, struct argp,
62
argp_parse() */
77
63
78
64
/* Avahi */
79
/* All Avahi types, constants and functions
80
Avahi*, avahi_*,
81
AVAHI_* */
82
#include <avahi-core/core.h>
65
#include <avahi-core/core.h> /* AvahiSimplePoll, AvahiServer,
66
AvahiIfIndex */
83
67
#include <avahi-core/lookup.h>
84
#include <avahi-core/log.h>
68
#include <avahi-core/log.h> /* AvahiLogLevel */
85
69
#include <avahi-common/simple-watch.h>
86
70
#include <avahi-common/malloc.h>
87
71
#include <avahi-common/error.h>
88
72
89
73
/* GnuTLS */
90
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
91
functions:
92
gnutls_*
74
#include <gnutls/gnutls.h> /* gnutls_certificate_credentials_t,
75
gnutls_dh_params_t,
76
gnutls_strerror(),
77
gnutls_global_init(),
78
gnutls_global_set_log_level(),
79
gnutls_global_set_log_function(),
80
gnutls_certificate_allocate_credentials(),
81
gnutls_global_deinit(),
82
gnutls_dh_params_init(),
83
gnutls_dh_params_generate(),
84
gnutls_certificate_set_dh_params(),
85
gnutls_certificate_free_credentials(),
86
gnutls_session_t, gnutls_init(),
87
gnutls_priority_set_direct(),
88
gnutls_deinit(),
89
gnutls_credentials_set(),
90
gnutls_certificate_server_set_request(),
91
gnutls_dh_set_prime_bits(),
92
gnutls_transport_set_ptr(),
93
gnutls_transport_ptr_t,
94
gnutls_handshake(),
95
gnutls_record_recv()
96
gnutls_perror(), gnutls_bye(),
93
97
init_gnutls_session(),
94
GNUTLS_* */
95
#include <gnutls/openpgp.h>
96
/* gnutls_certificate_set_openpgp_key_file(),
97
GNUTLS_OPENPGP_FMT_BASE64 */
98
GNUTLS_E_SUCCESS,
99
GNUTLS_CRD_CERTIFICATE,
100
GNUTLS_CERT_IGNORE,
101
GNUTLS_E_INTERRUPTED,
102
GNUTLS_E_AGAIN,
103
GNUTLS_E_REHANDSHAKE,
104
GNUTLS_SHUT_RDWR, */
105
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
106
GNUTLS_OPENPGP_FMT_BASE64 */
98
107
99
108
/* GPGME */
100
#include <gpgme.h> /* All GPGME types, constants and
101
functions:
102
gpgme_*
109
#include <gpgme.h> /* gpgme_data_t, gpgme_ctx_t,
110
gpgme_error_t, gpgme_engine_info_t,
111
gpgme_check_version(),
112
gpgme_engine_check_version(),
113
gpgme_strsource(),
114
gpgme_strerror(),
115
gpgme_get_engine_info(),
116
gpgme_set_engine_info(),
117
gpgme_data_new_from_mem(),
118
gpgme_data_new(), gpgme_new(),
119
gpgme_op_decrypt(),
120
gpgme_decrypt_result_t,
121
gpgme_op_decrypt_result(),
122
gpgme_recipient_t,
123
gpgme_pubkey_algo_name(),
124
gpgme_data_seek(),
125
gpgme_data_read(),
126
gpgme_data_release()
103
127
GPGME_PROTOCOL_OpenPGP,
104
GPG_ERR_NO_* */
128
GPG_ERR_NO_ERROR,
129
GPG_ERR_NO_SECKEY, */
105
130
106
131
#define BUFFER_SIZE 256
107
132
108
#define PATHDIR "/conf/conf.d/mandos"
109
#define SECKEY "seckey.txt"
110
#define PUBKEY "pubkey.txt"
111
112
133
bool debug = false;
134
static const char *keydir = "/conf/conf.d/mandos";
113
135
static const char mandos_protocol_version[] = "1";
114
const char *argp_program_version = "mandos-client " VERSION;
136
const char *argp_program_version = "mandosclient 0.9";
115
137
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
116
138
117
139
/* Used for passing in values through the Avahi callback functions */
122
144
unsigned int dh_bits;
123
145
gnutls_dh_params_t dh_params;
124
146
const char *priority;
125
gpgme_ctx_t ctx;
126
147
} mandos_context;
127
148
128
149
/*
132
153
*/
133
154
size_t adjustbuffer(char **buffer, size_t buffer_length,
134
155
size_t buffer_capacity){
135
if(buffer_length + BUFFER_SIZE > buffer_capacity){
156
if (buffer_length + BUFFER_SIZE > buffer_capacity){
136
157
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
137
if(buffer == NULL){
158
if (buffer == NULL){
138
159
return 0;
139
160
}
140
161
buffer_capacity += BUFFER_SIZE;
143
164
}
144
165
145
166
/*
146
* Initialize GPGME.
167
* Decrypt OpenPGP data using keyrings in HOMEDIR.
168
* Returns -1 on error
147
169
*/
148
static bool init_gpgme(mandos_context *mc, const char *seckey,
149
const char *pubkey, const char *tempdir){
150
int ret;
170
static ssize_t pgp_packet_decrypt (const char *cryptotext,
171
size_t crypto_size,
172
char **plaintext,
173
const char *homedir){
174
gpgme_data_t dh_crypto, dh_plain;
175
gpgme_ctx_t ctx;
151
176
gpgme_error_t rc;
177
ssize_t ret;
178
size_t plaintext_capacity = 0;
179
ssize_t plaintext_length = 0;
152
180
gpgme_engine_info_t engine_info;
153
181
154
155
/*
156
* Helper function to insert pub and seckey to the enigne keyring.
157
*/
158
bool import_key(const char *filename){
159
int fd;
160
gpgme_data_t pgp_data;
161
162
fd = (int)TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
163
if(fd == -1){
164
perror("open");
165
return false;
166
}
167
168
rc = gpgme_data_new_from_fd(&pgp_data, fd);
169
if(rc != GPG_ERR_NO_ERROR){
170
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
171
gpgme_strsource(rc), gpgme_strerror(rc));
172
return false;
173
}
174
175
rc = gpgme_op_import(mc->ctx, pgp_data);
176
if(rc != GPG_ERR_NO_ERROR){
177
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
178
gpgme_strsource(rc), gpgme_strerror(rc));
179
return false;
180
}
181
182
ret = (int)TEMP_FAILURE_RETRY(close(fd));
183
if(ret == -1){
184
perror("close");
185
}
186
gpgme_data_release(pgp_data);
187
return true;
188
}
189
190
if(debug){
191
fprintf(stderr, "Initialize gpgme\n");
182
if (debug){
183
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
192
184
}
193
185
194
186
/* Init GPGME */
195
187
gpgme_check_version(NULL);
196
188
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
197
if(rc != GPG_ERR_NO_ERROR){
189
if (rc != GPG_ERR_NO_ERROR){
198
190
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
199
191
gpgme_strsource(rc), gpgme_strerror(rc));
200
return false;
192
return -1;
201
193
}
202
194
203
/* Set GPGME home directory for the OpenPGP engine only */
204
rc = gpgme_get_engine_info(&engine_info);
205
if(rc != GPG_ERR_NO_ERROR){
195
/* Set GPGME home directory for the OpenPGP engine only */
196
rc = gpgme_get_engine_info (&engine_info);
197
if (rc != GPG_ERR_NO_ERROR){
206
198
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
207
199
gpgme_strsource(rc), gpgme_strerror(rc));
208
return false;
200
return -1;
209
201
}
210
202
while(engine_info != NULL){
211
203
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
212
204
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
213
engine_info->file_name, tempdir);
205
engine_info->file_name, homedir);
214
206
break;
215
207
}
216
208
engine_info = engine_info->next;
217
209
}
218
210
if(engine_info == NULL){
219
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
220
return false;
221
}
222
223
/* Create new GPGME "context" */
224
rc = gpgme_new(&(mc->ctx));
225
if(rc != GPG_ERR_NO_ERROR){
226
fprintf(stderr, "bad gpgme_new: %s: %s\n",
227
gpgme_strsource(rc), gpgme_strerror(rc));
228
return false;
229
}
230
231
if(not import_key(pubkey) or not import_key(seckey)){
232
return false;
233
}
234
235
return true;
236
}
237
238
/*
239
* Decrypt OpenPGP data.
240
* Returns -1 on error
241
*/
242
static ssize_t pgp_packet_decrypt(const mandos_context *mc,
243
const char *cryptotext,
244
size_t crypto_size,
245
char **plaintext){
246
gpgme_data_t dh_crypto, dh_plain;
247
gpgme_error_t rc;
248
ssize_t ret;
249
size_t plaintext_capacity = 0;
250
ssize_t plaintext_length = 0;
251
252
if(debug){
253
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
211
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
212
return -1;
254
213
}
255
214
256
215
/* Create new GPGME data buffer from memory cryptotext */
257
216
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
258
217
0);
259
if(rc != GPG_ERR_NO_ERROR){
218
if (rc != GPG_ERR_NO_ERROR){
260
219
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
261
220
gpgme_strsource(rc), gpgme_strerror(rc));
262
221
return -1;
264
223
265
224
/* Create new empty GPGME data buffer for the plaintext */
266
225
rc = gpgme_data_new(&dh_plain);
267
if(rc != GPG_ERR_NO_ERROR){
226
if (rc != GPG_ERR_NO_ERROR){
268
227
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
269
228
gpgme_strsource(rc), gpgme_strerror(rc));
270
229
gpgme_data_release(dh_crypto);
271
230
return -1;
272
231
}
273
232
233
/* Create new GPGME "context" */
234
rc = gpgme_new(&ctx);
235
if (rc != GPG_ERR_NO_ERROR){
236
fprintf(stderr, "bad gpgme_new: %s: %s\n",
237
gpgme_strsource(rc), gpgme_strerror(rc));
238
plaintext_length = -1;
239
goto decrypt_end;
240
}
241
274
242
/* Decrypt data from the cryptotext data buffer to the plaintext
275
243
data buffer */
276
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
277
if(rc != GPG_ERR_NO_ERROR){
244
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
245
if (rc != GPG_ERR_NO_ERROR){
278
246
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
279
247
gpgme_strsource(rc), gpgme_strerror(rc));
280
248
plaintext_length = -1;
281
if(debug){
282
gpgme_decrypt_result_t result;
283
result = gpgme_op_decrypt_result(mc->ctx);
284
if(result == NULL){
285
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
286
} else {
287
fprintf(stderr, "Unsupported algorithm: %s\n",
288
result->unsupported_algorithm);
289
fprintf(stderr, "Wrong key usage: %u\n",
290
result->wrong_key_usage);
291
if(result->file_name != NULL){
292
fprintf(stderr, "File name: %s\n", result->file_name);
293
}
294
gpgme_recipient_t recipient;
295
recipient = result->recipients;
296
if(recipient){
297
while(recipient != NULL){
298
fprintf(stderr, "Public key algorithm: %s\n",
299
gpgme_pubkey_algo_name(recipient->pubkey_algo));
300
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
301
fprintf(stderr, "Secret key available: %s\n",
302
recipient->status == GPG_ERR_NO_SECKEY
303
? "No" : "Yes");
304
recipient = recipient->next;
305
}
306
}
307
}
308
}
309
249
goto decrypt_end;
310
250
}
311
251
313
253
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
314
254
}
315
255
256
if (debug){
257
gpgme_decrypt_result_t result;
258
result = gpgme_op_decrypt_result(ctx);
259
if (result == NULL){
260
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
261
} else {
262
fprintf(stderr, "Unsupported algorithm: %s\n",
263
result->unsupported_algorithm);
264
fprintf(stderr, "Wrong key usage: %d\n",
265
result->wrong_key_usage);
266
if(result->file_name != NULL){
267
fprintf(stderr, "File name: %s\n", result->file_name);
268
}
269
gpgme_recipient_t recipient;
270
recipient = result->recipients;
271
if(recipient){
272
while(recipient != NULL){
273
fprintf(stderr, "Public key algorithm: %s\n",
274
gpgme_pubkey_algo_name(recipient->pubkey_algo));
275
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
276
fprintf(stderr, "Secret key available: %s\n",
277
recipient->status == GPG_ERR_NO_SECKEY
278
? "No" : "Yes");
279
recipient = recipient->next;
280
}
281
}
282
}
283
}
284
316
285
/* Seek back to the beginning of the GPGME plaintext data buffer */
317
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
318
perror("gpgme_data_seek");
286
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
287
perror("pgpme_data_seek");
319
288
plaintext_length = -1;
320
289
goto decrypt_end;
321
290
}
325
294
plaintext_capacity = adjustbuffer(plaintext,
326
295
(size_t)plaintext_length,
327
296
plaintext_capacity);
328
if(plaintext_capacity == 0){
297
if (plaintext_capacity == 0){
329
298
perror("adjustbuffer");
330
299
plaintext_length = -1;
331
300
goto decrypt_end;
334
303
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
335
304
BUFFER_SIZE);
336
305
/* Print the data, if any */
337
if(ret == 0){
306
if (ret == 0){
338
307
/* EOF */
339
308
break;
340
309
}
345
314
}
346
315
plaintext_length += ret;
347
316
}
348
317
349
318
if(debug){
350
319
fprintf(stderr, "Decrypted password is: ");
351
320
for(ssize_t i = 0; i < plaintext_length; i++){
364
333
return plaintext_length;
365
334
}
366
335
367
static const char * safer_gnutls_strerror(int value) {
368
const char *ret = gnutls_strerror(value); /* Spurious warning from
369
-Wunreachable-code */
370
if(ret == NULL)
336
static const char * safer_gnutls_strerror (int value) {
337
const char *ret = gnutls_strerror (value);
338
if (ret == NULL)
371
339
ret = "(unknown)";
372
340
return ret;
373
341
}
379
347
}
380
348
381
349
static int init_gnutls_global(mandos_context *mc,
382
const char *pubkeyfilename,
383
const char *seckeyfilename){
350
const char *pubkeyfile,
351
const char *seckeyfile){
384
352
int ret;
385
353
386
354
if(debug){
387
355
fprintf(stderr, "Initializing GnuTLS\n");
388
356
}
389
390
ret = gnutls_global_init();
391
if(ret != GNUTLS_E_SUCCESS) {
392
fprintf(stderr, "GnuTLS global_init: %s\n",
393
safer_gnutls_strerror(ret));
357
358
if ((ret = gnutls_global_init ())
359
!= GNUTLS_E_SUCCESS) {
360
fprintf (stderr, "GnuTLS global_init: %s\n",
361
safer_gnutls_strerror(ret));
394
362
return -1;
395
363
}
396
364
397
if(debug){
365
if (debug){
398
366
/* "Use a log level over 10 to enable all debugging options."
399
367
* - GnuTLS manual
400
368
*/
403
371
}
404
372
405
373
/* OpenPGP credentials */
406
gnutls_certificate_allocate_credentials(&mc->cred);
407
if(ret != GNUTLS_E_SUCCESS){
408
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
409
* from
410
* -Wunreachable-code
411
*/
412
safer_gnutls_strerror(ret));
413
gnutls_global_deinit();
374
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
375
!= GNUTLS_E_SUCCESS) {
376
fprintf (stderr, "GnuTLS memory error: %s\n",
377
safer_gnutls_strerror(ret));
378
gnutls_global_deinit ();
414
379
return -1;
415
380
}
416
381
417
382
if(debug){
418
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
419
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
420
seckeyfilename);
383
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
384
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
385
seckeyfile);
421
386
}
422
387
423
388
ret = gnutls_certificate_set_openpgp_key_file
424
(mc->cred, pubkeyfilename, seckeyfilename,
425
GNUTLS_OPENPGP_FMT_BASE64);
426
if(ret != GNUTLS_E_SUCCESS) {
389
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
390
if (ret != GNUTLS_E_SUCCESS) {
427
391
fprintf(stderr,
428
392
"Error[%d] while reading the OpenPGP key pair ('%s',"
429
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
430
fprintf(stderr, "The GnuTLS error is: %s\n",
393
" '%s')\n", ret, pubkeyfile, seckeyfile);
394
fprintf(stdout, "The GnuTLS error is: %s\n",
431
395
safer_gnutls_strerror(ret));
432
396
goto globalfail;
433
397
}
434
398
435
399
/* GnuTLS server initialization */
436
400
ret = gnutls_dh_params_init(&mc->dh_params);
437
if(ret != GNUTLS_E_SUCCESS) {
438
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
439
" %s\n", safer_gnutls_strerror(ret));
401
if (ret != GNUTLS_E_SUCCESS) {
402
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
403
" %s\n", safer_gnutls_strerror(ret));
440
404
goto globalfail;
441
405
}
442
406
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
443
if(ret != GNUTLS_E_SUCCESS) {
444
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
445
safer_gnutls_strerror(ret));
407
if (ret != GNUTLS_E_SUCCESS) {
408
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
409
safer_gnutls_strerror(ret));
446
410
goto globalfail;
447
411
}
448
412
449
413
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
450
414
451
415
return 0;
452
416
453
417
globalfail:
454
418
455
419
gnutls_certificate_free_credentials(mc->cred);
456
420
gnutls_global_deinit();
457
gnutls_dh_params_deinit(mc->dh_params);
458
421
return -1;
422
459
423
}
460
424
461
425
static int init_gnutls_session(mandos_context *mc,
463
427
int ret;
464
428
/* GnuTLS session creation */
465
429
ret = gnutls_init(session, GNUTLS_SERVER);
466
if(ret != GNUTLS_E_SUCCESS){
430
if (ret != GNUTLS_E_SUCCESS){
467
431
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
468
432
safer_gnutls_strerror(ret));
469
433
}
471
435
{
472
436
const char *err;
473
437
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
474
if(ret != GNUTLS_E_SUCCESS) {
438
if (ret != GNUTLS_E_SUCCESS) {
475
439
fprintf(stderr, "Syntax error at: %s\n", err);
476
440
fprintf(stderr, "GnuTLS error: %s\n",
477
441
safer_gnutls_strerror(ret));
478
gnutls_deinit(*session);
442
gnutls_deinit (*session);
479
443
return -1;
480
444
}
481
445
}
482
446
483
447
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
484
448
mc->cred);
485
if(ret != GNUTLS_E_SUCCESS) {
449
if (ret != GNUTLS_E_SUCCESS) {
486
450
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
487
451
safer_gnutls_strerror(ret));
488
gnutls_deinit(*session);
452
gnutls_deinit (*session);
489
453
return -1;
490
454
}
491
455
492
456
/* ignore client certificate if any. */
493
gnutls_certificate_server_set_request(*session,
494
GNUTLS_CERT_IGNORE);
457
gnutls_certificate_server_set_request (*session,
458
GNUTLS_CERT_IGNORE);
495
459
496
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
460
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
497
461
498
462
return 0;
499
463
}
507
471
AvahiIfIndex if_index,
508
472
mandos_context *mc){
509
473
int ret, tcp_sd;
510
ssize_t sret;
511
474
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
512
475
char *buffer = NULL;
513
476
char *decrypted_buffer;
519
482
char interface[IF_NAMESIZE];
520
483
gnutls_session_t session;
521
484
522
ret = init_gnutls_session(mc, &session);
523
if(ret != 0){
485
ret = init_gnutls_session (mc, &session);
486
if (ret != 0){
524
487
return -1;
525
488
}
526
489
527
490
if(debug){
528
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
529
"\n", ip, port);
491
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
492
ip, port);
530
493
}
531
494
532
495
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
534
497
perror("socket");
535
498
return -1;
536
499
}
537
500
538
501
if(debug){
539
502
if(if_indextoname((unsigned int)if_index, interface) == NULL){
540
503
perror("if_indextoname");
543
506
fprintf(stderr, "Binding to interface %s\n", interface);
544
507
}
545
508
546
memset(&to, 0, sizeof(to));
509
memset(&to,0,sizeof(to)); /* Spurious warning */
547
510
to.in6.sin6_family = AF_INET6;
548
511
/* It would be nice to have a way to detect if we were passed an
549
512
IPv4 address here. Now we assume an IPv6 address. */
550
513
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
551
if(ret < 0 ){
514
if (ret < 0 ){
552
515
perror("inet_pton");
553
516
return -1;
554
517
}
556
519
fprintf(stderr, "Bad address: %s\n", ip);
557
520
return -1;
558
521
}
559
to.in6.sin6_port = htons(port); /* Spurious warnings from
560
-Wconversion and
561
-Wunreachable-code */
522
to.in6.sin6_port = htons(port); /* Spurious warning */
562
523
563
524
to.in6.sin6_scope_id = (uint32_t)if_index;
564
525
565
526
if(debug){
566
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
567
port);
527
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
568
528
char addrstr[INET6_ADDRSTRLEN] = "";
569
529
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
570
530
sizeof(addrstr)) == NULL){
577
537
}
578
538
579
539
ret = connect(tcp_sd, &to.in, sizeof(to));
580
if(ret < 0){
540
if (ret < 0){
581
541
perror("connect");
582
542
return -1;
583
543
}
584
544
585
545
const char *out = mandos_protocol_version;
586
546
written = 0;
587
while(true){
547
while (true){
588
548
size_t out_size = strlen(out);
589
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
549
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
590
550
out_size - written));
591
if(ret == -1){
551
if (ret == -1){
592
552
perror("write");
593
553
retval = -1;
594
554
goto mandos_end;
597
557
if(written < out_size){
598
558
continue;
599
559
} else {
600
if(out == mandos_protocol_version){
560
if (out == mandos_protocol_version){
601
561
written = 0;
602
562
out = "\r\n";
603
563
} else {
605
565
}
606
566
}
607
567
}
608
568
609
569
if(debug){
610
570
fprintf(stderr, "Establishing TLS session with %s\n", ip);
611
571
}
612
572
613
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
614
615
do{
616
ret = gnutls_handshake(session);
617
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
618
619
if(ret != GNUTLS_E_SUCCESS){
573
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
574
575
ret = gnutls_handshake (session);
576
577
if (ret != GNUTLS_E_SUCCESS){
620
578
if(debug){
621
579
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
622
gnutls_perror(ret);
580
gnutls_perror (ret);
623
581
}
624
582
retval = -1;
625
583
goto mandos_end;
631
589
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
632
590
ip);
633
591
}
634
592
635
593
while(true){
636
594
buffer_capacity = adjustbuffer(&buffer, buffer_length,
637
595
buffer_capacity);
638
if(buffer_capacity == 0){
596
if (buffer_capacity == 0){
639
597
perror("adjustbuffer");
640
598
retval = -1;
641
599
goto mandos_end;
642
600
}
643
601
644
sret = gnutls_record_recv(session, buffer+buffer_length,
645
BUFFER_SIZE);
646
if(sret == 0){
602
ret = gnutls_record_recv(session, buffer+buffer_length,
603
BUFFER_SIZE);
604
if (ret == 0){
647
605
break;
648
606
}
649
if(sret < 0){
650
switch(sret){
607
if (ret < 0){
608
switch(ret){
651
609
case GNUTLS_E_INTERRUPTED:
652
610
case GNUTLS_E_AGAIN:
653
611
break;
654
612
case GNUTLS_E_REHANDSHAKE:
655
do{
656
ret = gnutls_handshake(session);
657
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
658
if(ret < 0){
613
ret = gnutls_handshake (session);
614
if (ret < 0){
659
615
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
660
gnutls_perror(ret);
616
gnutls_perror (ret);
661
617
retval = -1;
662
618
goto mandos_end;
663
619
}
666
622
fprintf(stderr, "Unknown error while reading data from"
667
623
" encrypted session with Mandos server\n");
668
624
retval = -1;
669
gnutls_bye(session, GNUTLS_SHUT_RDWR);
625
gnutls_bye (session, GNUTLS_SHUT_RDWR);
670
626
goto mandos_end;
671
627
}
672
628
} else {
673
buffer_length += (size_t) sret;
629
buffer_length += (size_t) ret;
674
630
}
675
631
}
676
632
678
634
fprintf(stderr, "Closing TLS session\n");
679
635
}
680
636
681
gnutls_bye(session, GNUTLS_SHUT_RDWR);
637
gnutls_bye (session, GNUTLS_SHUT_RDWR);
682
638
683
if(buffer_length > 0){
684
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
639
if (buffer_length > 0){
640
decrypted_buffer_size = pgp_packet_decrypt(buffer,
685
641
buffer_length,
686
&decrypted_buffer);
687
if(decrypted_buffer_size >= 0){
642
&decrypted_buffer,
643
keydir);
644
if (decrypted_buffer_size >= 0){
688
645
written = 0;
689
646
while(written < (size_t) decrypted_buffer_size){
690
ret = (int)fwrite(decrypted_buffer + written, 1,
691
(size_t)decrypted_buffer_size - written,
692
stdout);
647
ret = (int)fwrite (decrypted_buffer + written, 1,
648
(size_t)decrypted_buffer_size - written,
649
stdout);
693
650
if(ret == 0 and ferror(stdout)){
694
651
if(debug){
695
652
fprintf(stderr, "Error writing encrypted data: %s\n",
704
661
} else {
705
662
retval = -1;
706
663
}
707
} else {
708
retval = -1;
709
664
}
710
665
711
666
/* Shutdown procedure */
712
667
713
668
mandos_end:
714
669
free(buffer);
715
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
716
if(ret == -1){
717
perror("close");
718
}
719
gnutls_deinit(session);
670
close(tcp_sd);
671
gnutls_deinit (session);
720
672
return retval;
721
673
}
722
674
735
687
flags,
736
688
void* userdata) {
737
689
mandos_context *mc = userdata;
738
assert(r);
690
assert(r); /* Spurious warning */
739
691
740
692
/* Called whenever a service has been resolved successfully or
741
693
timed out */
742
694
743
switch(event) {
695
switch (event) {
744
696
default:
745
697
case AVAHI_RESOLVER_FAILURE:
746
698
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
753
705
char ip[AVAHI_ADDRESS_STR_MAX];
754
706
avahi_address_snprint(ip, sizeof(ip), address);
755
707
if(debug){
756
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
757
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
758
ip, (intmax_t)interface, port);
708
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
709
" port %d\n", name, host_name, ip, interface, port);
759
710
}
760
711
int ret = start_mandos_communication(ip, port, interface, mc);
761
if(ret == 0){
762
avahi_simple_poll_quit(mc->simple_poll);
712
if (ret == 0){
713
exit(EXIT_SUCCESS);
763
714
}
764
715
}
765
716
}
777
728
flags,
778
729
void* userdata) {
779
730
mandos_context *mc = userdata;
780
assert(b);
731
assert(b); /* Spurious warning */
781
732
782
733
/* Called whenever a new services becomes available on the LAN or
783
734
is removed from the LAN */
784
735
785
switch(event) {
736
switch (event) {
786
737
default:
787
738
case AVAHI_BROWSER_FAILURE:
788
739
797
748
the callback function is called the Avahi server will free the
798
749
resolver for us. */
799
750
800
if(!(avahi_s_service_resolver_new(mc->server, interface,
751
if (!(avahi_s_service_resolver_new(mc->server, interface,
801
752
protocol, name, type, domain,
802
753
AVAHI_PROTO_INET6, 0,
803
754
resolve_callback, mc)))
817
768
}
818
769
}
819
770
771
/* Combines file name and path and returns the malloced new
772
string. some sane checks could/should be added */
773
static const char *combinepath(const char *first, const char *second){
774
size_t f_len = strlen(first);
775
size_t s_len = strlen(second);
776
char *tmp = malloc(f_len + s_len + 2);
777
if (tmp == NULL){
778
return NULL;
779
}
780
if(f_len > 0){
781
memcpy(tmp, first, f_len); /* Spurious warning */
782
}
783
tmp[f_len] = '/';
784
if(s_len > 0){
785
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
786
}
787
tmp[f_len + 1 + s_len] = '\0';
788
return tmp;
789
}
790
791
820
792
int main(int argc, char *argv[]){
821
793
AvahiSServiceBrowser *sb = NULL;
822
794
int error;
823
795
int ret;
824
intmax_t tmpmax;
825
int numchars;
826
796
int exitcode = EXIT_SUCCESS;
827
797
const char *interface = "eth0";
828
798
struct ifreq network;
830
800
uid_t uid;
831
801
gid_t gid;
832
802
char *connect_to = NULL;
833
char tempdir[] = "/tmp/mandosXXXXXX";
834
803
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
835
const char *seckey = PATHDIR "/" SECKEY;
836
const char *pubkey = PATHDIR "/" PUBKEY;
837
804
const char *pubkeyfile = "pubkey.txt";
805
const char *seckeyfile = "seckey.txt";
838
806
mandos_context mc = { .simple_poll = NULL, .server = NULL,
839
.dh_bits = 1024, .priority = "SECURE256"
840
":!CTYPE-X.509:+CTYPE-OPENPGP" };
841
bool gnutls_initialized = false;
842
bool gpgme_initialized = false;
807
.dh_bits = 1024, .priority = "SECURE256"};
808
bool gnutls_initalized = false;
843
809
844
810
{
845
811
struct argp_option options[] = {
846
812
{ .name = "debug", .key = 128,
847
813
.doc = "Debug mode", .group = 3 },
848
814
{ .name = "connect", .key = 'c',
849
.arg = "ADDRESS:PORT",
850
.doc = "Connect directly to a specific Mandos server",
815
.arg = "IP",
816
.doc = "Connect directly to a sepcified mandos server",
851
817
.group = 1 },
852
818
{ .name = "interface", .key = 'i',
853
.arg = "NAME",
854
.doc = "Interface that will be used to search for Mandos"
855
" servers",
819
.arg = "INTERFACE",
820
.doc = "Interface that Avahi will conntect through",
821
.group = 1 },
822
{ .name = "keydir", .key = 'd',
823
.arg = "KEYDIR",
824
.doc = "Directory where the openpgp keyring is",
856
825
.group = 1 },
857
826
{ .name = "seckey", .key = 's',
858
.arg = "FILE",
859
.doc = "OpenPGP secret key file base name",
827
.arg = "SECKEY",
828
.doc = "Secret openpgp key for gnutls authentication",
860
829
.group = 1 },
861
830
{ .name = "pubkey", .key = 'p',
862
.arg = "FILE",
863
.doc = "OpenPGP public key file base name",
831
.arg = "PUBKEY",
832
.doc = "Public openpgp key for gnutls authentication",
864
833
.group = 2 },
865
834
{ .name = "dh-bits", .key = 129,
866
835
.arg = "BITS",
867
.doc = "Bit length of the prime number used in the"
868
" Diffie-Hellman key exchange",
836
.doc = "dh-bits to use in gnutls communication",
869
837
.group = 2 },
870
838
{ .name = "priority", .key = 130,
871
.arg = "STRING",
872
.doc = "GnuTLS priority string for the TLS handshake",
873
.group = 1 },
839
.arg = "PRIORITY",
840
.doc = "GNUTLS priority", .group = 1 },
874
841
{ .name = NULL }
875
842
};
843
876
844
877
error_t parse_opt(int key, char *arg,
878
struct argp_state *state) {
879
switch(key) {
880
case 128: /* --debug */
845
error_t parse_opt (int key, char *arg,
846
struct argp_state *state) {
847
/* Get the INPUT argument from `argp_parse', which we know is
848
a pointer to our plugin list pointer. */
849
switch (key) {
850
case 128:
881
851
debug = true;
882
852
break;
883
case 'c': /* --connect */
853
case 'c':
884
854
connect_to = arg;
885
855
break;
886
case 'i': /* --interface */
856
case 'i':
887
857
interface = arg;
888
858
break;
889
case 's': /* --seckey */
890
seckey = arg;
891
break;
892
case 'p': /* --pubkey */
893
pubkey = arg;
894
break;
895
case 129: /* --dh-bits */
896
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
897
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
898
or arg[numchars] != '\0'){
899
fprintf(stderr, "Bad number of DH bits\n");
859
case 'd':
860
keydir = arg;
861
break;
862
case 's':
863
seckeyfile = arg;
864
break;
865
case 'p':
866
pubkeyfile = arg;
867
break;
868
case 129:
869
errno = 0;
870
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
871
if (errno){
872
perror("strtol");
900
873
exit(EXIT_FAILURE);
901
874
}
902
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
903
875
break;
904
case 130: /* --priority */
876
case 130:
905
877
mc.priority = arg;
906
878
break;
907
879
case ARGP_KEY_ARG:
908
argp_usage(state);
909
case ARGP_KEY_END:
880
argp_usage (state);
910
881
break;
882
case ARGP_KEY_END:
883
break;
911
884
default:
912
885
return ARGP_ERR_UNKNOWN;
913
886
}
914
887
return 0;
915
888
}
916
889
917
890
struct argp argp = { .options = options, .parser = parse_opt,
918
891
.args_doc = "",
919
892
.doc = "Mandos client -- Get and decrypt"
920
" passwords from a Mandos server" };
921
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
922
if(ret == ARGP_ERR_UNKNOWN){
923
fprintf(stderr, "Unknown error while parsing arguments\n");
924
exitcode = EXIT_FAILURE;
925
goto end;
926
}
927
}
928
929
/* If the interface is down, bring it up */
930
{
931
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
932
if(sd < 0) {
933
perror("socket");
934
exitcode = EXIT_FAILURE;
935
goto end;
936
}
937
strcpy(network.ifr_name, interface);
938
ret = ioctl(sd, SIOCGIFFLAGS, &network);
939
if(ret == -1){
940
perror("ioctl SIOCGIFFLAGS");
941
exitcode = EXIT_FAILURE;
942
goto end;
943
}
944
if((network.ifr_flags & IFF_UP) == 0){
945
network.ifr_flags |= IFF_UP;
946
ret = ioctl(sd, SIOCSIFFLAGS, &network);
947
if(ret == -1){
948
perror("ioctl SIOCSIFFLAGS");
949
exitcode = EXIT_FAILURE;
950
goto end;
951
}
952
}
953
ret = (int)TEMP_FAILURE_RETRY(close(sd));
954
if(ret == -1){
955
perror("close");
956
}
957
}
958
893
" passwords from mandos server" };
894
argp_parse (&argp, argc, argv, 0, 0, NULL);
895
}
896
897
pubkeyfile = combinepath(keydir, pubkeyfile);
898
if (pubkeyfile == NULL){
899
perror("combinepath");
900
exitcode = EXIT_FAILURE;
901
goto end;
902
}
903
904
seckeyfile = combinepath(keydir, seckeyfile);
905
if (seckeyfile == NULL){
906
perror("combinepath");
907
goto end;
908
}
909
910
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
911
if (ret == -1){
912
fprintf(stderr, "init_gnutls_global\n");
913
goto end;
914
} else {
915
gnutls_initalized = true;
916
}
917
959
918
uid = getuid();
960
919
gid = getgid();
961
920
962
921
ret = setuid(uid);
963
if(ret == -1){
922
if (ret == -1){
964
923
perror("setuid");
965
924
}
966
925
967
926
setgid(gid);
968
if(ret == -1){
927
if (ret == -1){
969
928
perror("setgid");
970
929
}
971
930
972
ret = init_gnutls_global(&mc, pubkey, seckey);
973
if(ret == -1){
974
fprintf(stderr, "init_gnutls_global failed\n");
975
exitcode = EXIT_FAILURE;
976
goto end;
977
} else {
978
gnutls_initialized = true;
979
}
980
981
if(mkdtemp(tempdir) == NULL){
982
perror("mkdtemp");
983
tempdir[0] = '\0';
984
goto end;
985
}
986
987
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
988
fprintf(stderr, "init_gpgme failed\n");
989
exitcode = EXIT_FAILURE;
990
goto end;
991
} else {
992
gpgme_initialized = true;
993
}
994
995
931
if_index = (AvahiIfIndex) if_nametoindex(interface);
996
932
if(if_index == 0){
997
933
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1007
943
exitcode = EXIT_FAILURE;
1008
944
goto end;
1009
945
}
1010
uint16_t port;
1011
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1012
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1013
or address[numchars+1] != '\0'){
1014
fprintf(stderr, "Bad port number\n");
946
errno = 0;
947
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
948
if(errno){
949
perror("Bad port number");
1015
950
exitcode = EXIT_FAILURE;
1016
951
goto end;
1017
952
}
1018
port = (uint16_t)tmpmax;
1019
953
*address = '\0';
1020
954
address = connect_to;
1021
955
ret = start_mandos_communication(address, port, if_index, &mc);
1027
961
goto end;
1028
962
}
1029
963
1030
if(not debug){
964
/* If the interface is down, bring it up */
965
{
966
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
967
if(sd < 0) {
968
perror("socket");
969
exitcode = EXIT_FAILURE;
970
goto end;
971
}
972
strcpy(network.ifr_name, interface); /* Spurious warning */
973
ret = ioctl(sd, SIOCGIFFLAGS, &network);
974
if(ret == -1){
975
perror("ioctl SIOCGIFFLAGS");
976
exitcode = EXIT_FAILURE;
977
goto end;
978
}
979
if((network.ifr_flags & IFF_UP) == 0){
980
network.ifr_flags |= IFF_UP;
981
ret = ioctl(sd, SIOCSIFFLAGS, &network);
982
if(ret == -1){
983
perror("ioctl SIOCSIFFLAGS");
984
exitcode = EXIT_FAILURE;
985
goto end;
986
}
987
}
988
close(sd);
989
}
990
991
if (not debug){
1031
992
avahi_set_log_function(empty_log);
1032
993
}
1033
994
1036
997
1037
998
/* Allocate main Avahi loop object */
1038
999
mc.simple_poll = avahi_simple_poll_new();
1039
if(mc.simple_poll == NULL) {
1000
if (mc.simple_poll == NULL) {
1040
1001
fprintf(stderr, "Avahi: Failed to create simple poll"
1041
1002
" object.\n");
1042
1003
exitcode = EXIT_FAILURE;
1043
1004
goto end;
1044
1005
}
1045
1006
1046
1007
{
1047
1008
AvahiServerConfig config;
1048
1009
/* Do not publish any local Zeroconf records */
1051
1012
config.publish_addresses = 0;
1052
1013
config.publish_workstation = 0;
1053
1014
config.publish_domain = 0;
1054
1015
1055
1016
/* Allocate a new server */
1056
1017
mc.server = avahi_server_new(avahi_simple_poll_get
1057
1018
(mc.simple_poll), &config, NULL,
1058
1019
NULL, &error);
1059
1020
1060
1021
/* Free the Avahi configuration data */
1061
1022
avahi_server_config_free(&config);
1062
1023
}
1063
1024
1064
1025
/* Check if creating the Avahi server object succeeded */
1065
if(mc.server == NULL) {
1026
if (mc.server == NULL) {
1066
1027
fprintf(stderr, "Failed to create Avahi server: %s\n",
1067
1028
avahi_strerror(error));
1068
1029
exitcode = EXIT_FAILURE;
1074
1035
AVAHI_PROTO_INET6,
1075
1036
"_mandos._tcp", NULL, 0,
1076
1037
browse_callback, &mc);
1077
if(sb == NULL) {
1038
if (sb == NULL) {
1078
1039
fprintf(stderr, "Failed to create service browser: %s\n",
1079
1040
avahi_strerror(avahi_server_errno(mc.server)));
1080
1041
exitcode = EXIT_FAILURE;
1082
1043
}
1083
1044
1084
1045
/* Run the main loop */
1085
1086
if(debug){
1046
1047
if (debug){
1087
1048
fprintf(stderr, "Starting Avahi loop search\n");
1088
1049
}
1089
1050
1090
1051
avahi_simple_poll_loop(mc.simple_poll);
1091
1052
1092
1053
end:
1093
1094
if(debug){
1054
1055
if (debug){
1095
1056
fprintf(stderr, "%s exiting\n", argv[0]);
1096
1057
}
1097
1058
1098
1059
/* Cleanup things */
1099
if(sb != NULL)
1060
if (sb != NULL)
1100
1061
avahi_s_service_browser_free(sb);
1101
1062
1102
if(mc.server != NULL)
1063
if (mc.server != NULL)
1103
1064
avahi_server_free(mc.server);
1104
1105
if(mc.simple_poll != NULL)
1065
1066
if (mc.simple_poll != NULL)
1106
1067
avahi_simple_poll_free(mc.simple_poll);
1107
1108
if(gnutls_initialized){
1109
gnutls_certificate_free_credentials(mc.cred);
1110
gnutls_global_deinit();
1111
gnutls_dh_params_deinit(mc.dh_params);
1112
}
1113
1114
if(gpgme_initialized){
1115
gpgme_release(mc.ctx);
1116
}
1117
1118
/* Removes the temp directory used by GPGME */
1119
if(tempdir[0] != '\0'){
1120
DIR *d;
1121
struct dirent *direntry;
1122
d = opendir(tempdir);
1123
if(d == NULL){
1124
if(errno != ENOENT){
1125
perror("opendir");
1126
}
1127
} else {
1128
while(true){
1129
direntry = readdir(d);
1130
if(direntry == NULL){
1131
break;
1132
}
1133
if(direntry->d_type == DT_REG){
1134
char *fullname = NULL;
1135
ret = asprintf(&fullname, "%s/%s", tempdir,
1136
direntry->d_name);
1137
if(ret < 0){
1138
perror("asprintf");
1139
continue;
1140
}
1141
ret = unlink(fullname);
1142
if(ret == -1){
1143
fprintf(stderr, "unlink(\"%s\"): %s",
1144
fullname, strerror(errno));
1145
}
1146
free(fullname);
1147
}
1148
}
1149
closedir(d);
1150
}
1151
ret = rmdir(tempdir);
1152
if(ret == -1 and errno != ENOENT){
1153
perror("rmdir");
1154
}
1155
}
1156
1068
free(pubkeyfile);
1069
free(seckeyfile);
1070
1071
if (gnutls_initalized){
1072
gnutls_certificate_free_credentials (mc.cred);
1073
gnutls_global_deinit ();
1074
}
1075
1157
1076
return exitcode;
1158
1077
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0