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- Committer: Teddy Hogeborn
- Date: 2009-01-17 09:46:54 UTC
- Revision ID: teddy@fukt.bsnet.se-20090117094654-ydvanis7caqoxxn7
* mandos-keygen (password): Remove bashism "${PIPESTATUS}".
- files added:
- .bzr-builddeb
- debian
- debian/po
- files removed:
- network-protocol.txt
- files renamed:
- mandos-client.c => plugin-runner.c
- mandos-client.xml => plugin-runner.xml
- plugins.d/password-request.c => plugins.d/mandos-client.c
- plugins.d/password-request.xml => plugins.d/mandos-client.xml
- 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> /* fprintf(), stderr, fwrite(), stdout, ferror() */
38
#include <stdio.h> /* fprintf(), stderr, fwrite(),
39
stdout, ferror(), sscanf */
38
40
#include <stdint.h> /* uint16_t, uint32_t */
39
41
#include <stddef.h> /* NULL, size_t, ssize_t */
40
#include <stdlib.h> /* free() */
42
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
43
srand() */
41
44
#include <stdbool.h> /* bool, true */
42
#include <string.h> /* memset(), strcmp(), strlen, strerror() */
43
#include <sys/ioctl.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
44
SIOCSIFFLAGS */
45
#include <string.h> /* memset(), strcmp(), strlen(),
46
strerror(), asprintf(), strcpy() */
47
#include <sys/ioctl.h> /* ioctl */
45
48
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
46
sockaddr_in6, PF_INET6, SOCK_STREAM, INET6_ADDRSTRLEN */
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() */
47
54
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
48
55
struct in6_addr, inet_pton(),
49
56
connect() */
50
#include <assert.h>
51
#include <errno.h> /* perror() */
52
#include <time.h>
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() */
53
64
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
54
65
SIOCSIFFLAGS, if_indextoname(),
55
66
if_nametoindex(), IF_NAMESIZE */
56
#include <unistd.h> /* close(), SEEK_SET, off_t, write()*/
57
67
#include <netinet/in.h>
68
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
69
getuid(), getgid(), setuid(),
70
setgid() */
58
71
#include <arpa/inet.h> /* inet_pton(), htons */
59
#include <iso646.h> /* not */
60
#include <argp.h> /* struct argp_option,
61
struct argp_state, struct argp,
62
argp_parse() */
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 */
63
77
64
78
/* Avahi */
65
#include <avahi-core/core.h> /* AvahiSimplePoll, AvahiServer,
66
AvahiIfIndex */
79
/* All Avahi types, constants and functions
80
Avahi*, avahi_*,
81
AVAHI_* */
82
#include <avahi-core/core.h>
67
83
#include <avahi-core/lookup.h>
68
#include <avahi-core/log.h> /* AvahiLogLevel */
84
#include <avahi-core/log.h>
69
85
#include <avahi-common/simple-watch.h>
70
86
#include <avahi-common/malloc.h>
71
87
#include <avahi-common/error.h>
72
88
73
89
/* 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(),
90
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
91
functions:
92
gnutls_*
97
93
init_gnutls_session(),
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 */
94
GNUTLS_* */
95
#include <gnutls/openpgp.h>
96
/* gnutls_certificate_set_openpgp_key_file(),
97
GNUTLS_OPENPGP_FMT_BASE64 */
107
98
108
99
/* 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()
100
#include <gpgme.h> /* All GPGME types, constants and
101
functions:
102
gpgme_*
127
103
GPGME_PROTOCOL_OpenPGP,
128
GPG_ERR_NO_ERROR,
129
GPG_ERR_NO_SECKEY, */
104
GPG_ERR_NO_* */
130
105
131
106
#define BUFFER_SIZE 256
132
107
108
#define PATHDIR "/conf/conf.d/mandos"
109
#define SECKEY "seckey.txt"
110
#define PUBKEY "pubkey.txt"
111
133
112
bool debug = false;
134
static const char *keydir = "/conf/conf.d/mandos";
135
113
static const char mandos_protocol_version[] = "1";
136
const char *argp_program_version = "mandosclient 0.9";
114
const char *argp_program_version = "mandos-client " VERSION;
137
115
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
138
116
139
117
/* Used for passing in values through the Avahi callback functions */
144
122
unsigned int dh_bits;
145
123
gnutls_dh_params_t dh_params;
146
124
const char *priority;
125
gpgme_ctx_t ctx;
147
126
} mandos_context;
148
127
149
128
/*
153
132
*/
154
133
size_t adjustbuffer(char **buffer, size_t buffer_length,
155
134
size_t buffer_capacity){
156
if (buffer_length + BUFFER_SIZE > buffer_capacity){
135
if(buffer_length + BUFFER_SIZE > buffer_capacity){
157
136
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
158
if (buffer == NULL){
137
if(buffer == NULL){
159
138
return 0;
160
139
}
161
140
buffer_capacity += BUFFER_SIZE;
164
143
}
165
144
166
145
/*
167
* Decrypt OpenPGP data using keyrings in HOMEDIR.
168
* Returns -1 on error
146
* Initialize GPGME.
169
147
*/
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;
148
static bool init_gpgme(mandos_context *mc, const char *seckey,
149
const char *pubkey, const char *tempdir){
150
int ret;
176
151
gpgme_error_t rc;
177
ssize_t ret;
178
size_t plaintext_capacity = 0;
179
ssize_t plaintext_length = 0;
180
152
gpgme_engine_info_t engine_info;
181
153
182
if (debug){
183
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
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");
184
192
}
185
193
186
194
/* Init GPGME */
187
195
gpgme_check_version(NULL);
188
196
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
189
if (rc != GPG_ERR_NO_ERROR){
197
if(rc != GPG_ERR_NO_ERROR){
190
198
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
191
199
gpgme_strsource(rc), gpgme_strerror(rc));
192
return -1;
200
return false;
193
201
}
194
202
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){
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){
198
206
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
199
207
gpgme_strsource(rc), gpgme_strerror(rc));
200
return -1;
208
return false;
201
209
}
202
210
while(engine_info != NULL){
203
211
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
204
212
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
205
engine_info->file_name, homedir);
213
engine_info->file_name, tempdir);
206
214
break;
207
215
}
208
216
engine_info = engine_info->next;
209
217
}
210
218
if(engine_info == NULL){
211
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
212
return -1;
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");
213
254
}
214
255
215
256
/* Create new GPGME data buffer from memory cryptotext */
216
257
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
217
258
0);
218
if (rc != GPG_ERR_NO_ERROR){
259
if(rc != GPG_ERR_NO_ERROR){
219
260
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
220
261
gpgme_strsource(rc), gpgme_strerror(rc));
221
262
return -1;
223
264
224
265
/* Create new empty GPGME data buffer for the plaintext */
225
266
rc = gpgme_data_new(&dh_plain);
226
if (rc != GPG_ERR_NO_ERROR){
267
if(rc != GPG_ERR_NO_ERROR){
227
268
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
228
269
gpgme_strsource(rc), gpgme_strerror(rc));
229
270
gpgme_data_release(dh_crypto);
230
271
return -1;
231
272
}
232
273
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
242
274
/* Decrypt data from the cryptotext data buffer to the plaintext
243
275
data buffer */
244
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
245
if (rc != GPG_ERR_NO_ERROR){
276
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
277
if(rc != GPG_ERR_NO_ERROR){
246
278
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
247
279
gpgme_strsource(rc), gpgme_strerror(rc));
248
280
plaintext_length = -1;
281
if(debug){
282
gpgme_decrypt_result_t result;
283
result = gpgme_op_decrypt_result(mc->ctx);
284
if(result == NULL){
285
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
286
} else {
287
fprintf(stderr, "Unsupported algorithm: %s\n",
288
result->unsupported_algorithm);
289
fprintf(stderr, "Wrong key usage: %u\n",
290
result->wrong_key_usage);
291
if(result->file_name != NULL){
292
fprintf(stderr, "File name: %s\n", result->file_name);
293
}
294
gpgme_recipient_t recipient;
295
recipient = result->recipients;
296
if(recipient){
297
while(recipient != NULL){
298
fprintf(stderr, "Public key algorithm: %s\n",
299
gpgme_pubkey_algo_name(recipient->pubkey_algo));
300
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
301
fprintf(stderr, "Secret key available: %s\n",
302
recipient->status == GPG_ERR_NO_SECKEY
303
? "No" : "Yes");
304
recipient = recipient->next;
305
}
306
}
307
}
308
}
249
309
goto decrypt_end;
250
310
}
251
311
253
313
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
254
314
}
255
315
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
285
316
/* Seek back to the beginning of the GPGME plaintext data buffer */
286
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
287
perror("pgpme_data_seek");
317
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
318
perror("gpgme_data_seek");
288
319
plaintext_length = -1;
289
320
goto decrypt_end;
290
321
}
294
325
plaintext_capacity = adjustbuffer(plaintext,
295
326
(size_t)plaintext_length,
296
327
plaintext_capacity);
297
if (plaintext_capacity == 0){
328
if(plaintext_capacity == 0){
298
329
perror("adjustbuffer");
299
330
plaintext_length = -1;
300
331
goto decrypt_end;
303
334
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
304
335
BUFFER_SIZE);
305
336
/* Print the data, if any */
306
if (ret == 0){
337
if(ret == 0){
307
338
/* EOF */
308
339
break;
309
340
}
314
345
}
315
346
plaintext_length += ret;
316
347
}
317
348
318
349
if(debug){
319
350
fprintf(stderr, "Decrypted password is: ");
320
351
for(ssize_t i = 0; i < plaintext_length; i++){
333
364
return plaintext_length;
334
365
}
335
366
336
static const char * safer_gnutls_strerror (int value) {
337
const char *ret = gnutls_strerror (value);
338
if (ret == NULL)
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)
339
371
ret = "(unknown)";
340
372
return ret;
341
373
}
347
379
}
348
380
349
381
static int init_gnutls_global(mandos_context *mc,
350
const char *pubkeyfile,
351
const char *seckeyfile){
382
const char *pubkeyfilename,
383
const char *seckeyfilename){
352
384
int ret;
353
385
354
386
if(debug){
355
387
fprintf(stderr, "Initializing GnuTLS\n");
356
388
}
357
358
if ((ret = gnutls_global_init ())
359
!= GNUTLS_E_SUCCESS) {
360
fprintf (stderr, "GnuTLS global_init: %s\n",
361
safer_gnutls_strerror(ret));
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));
362
394
return -1;
363
395
}
364
396
365
if (debug){
397
if(debug){
366
398
/* "Use a log level over 10 to enable all debugging options."
367
399
* - GnuTLS manual
368
400
*/
371
403
}
372
404
373
405
/* OpenPGP credentials */
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 ();
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();
379
414
return -1;
380
415
}
381
416
382
417
if(debug){
383
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
384
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
385
seckeyfile);
418
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
419
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
420
seckeyfilename);
386
421
}
387
422
388
423
ret = gnutls_certificate_set_openpgp_key_file
389
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
390
if (ret != GNUTLS_E_SUCCESS) {
424
(mc->cred, pubkeyfilename, seckeyfilename,
425
GNUTLS_OPENPGP_FMT_BASE64);
426
if(ret != GNUTLS_E_SUCCESS) {
391
427
fprintf(stderr,
392
428
"Error[%d] while reading the OpenPGP key pair ('%s',"
393
" '%s')\n", ret, pubkeyfile, seckeyfile);
394
fprintf(stdout, "The GnuTLS error is: %s\n",
429
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
430
fprintf(stderr, "The GnuTLS error is: %s\n",
395
431
safer_gnutls_strerror(ret));
396
432
goto globalfail;
397
433
}
398
434
399
435
/* GnuTLS server initialization */
400
436
ret = gnutls_dh_params_init(&mc->dh_params);
401
if (ret != GNUTLS_E_SUCCESS) {
402
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
403
" %s\n", safer_gnutls_strerror(ret));
437
if(ret != GNUTLS_E_SUCCESS) {
438
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
439
" %s\n", safer_gnutls_strerror(ret));
404
440
goto globalfail;
405
441
}
406
442
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
407
if (ret != GNUTLS_E_SUCCESS) {
408
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
409
safer_gnutls_strerror(ret));
443
if(ret != GNUTLS_E_SUCCESS) {
444
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
445
safer_gnutls_strerror(ret));
410
446
goto globalfail;
411
447
}
412
448
413
449
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
414
450
415
451
return 0;
416
452
417
453
globalfail:
418
454
419
455
gnutls_certificate_free_credentials(mc->cred);
420
456
gnutls_global_deinit();
457
gnutls_dh_params_deinit(mc->dh_params);
421
458
return -1;
422
423
459
}
424
460
425
461
static int init_gnutls_session(mandos_context *mc,
427
463
int ret;
428
464
/* GnuTLS session creation */
429
465
ret = gnutls_init(session, GNUTLS_SERVER);
430
if (ret != GNUTLS_E_SUCCESS){
466
if(ret != GNUTLS_E_SUCCESS){
431
467
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
432
468
safer_gnutls_strerror(ret));
433
469
}
435
471
{
436
472
const char *err;
437
473
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
438
if (ret != GNUTLS_E_SUCCESS) {
474
if(ret != GNUTLS_E_SUCCESS) {
439
475
fprintf(stderr, "Syntax error at: %s\n", err);
440
476
fprintf(stderr, "GnuTLS error: %s\n",
441
477
safer_gnutls_strerror(ret));
442
gnutls_deinit (*session);
478
gnutls_deinit(*session);
443
479
return -1;
444
480
}
445
481
}
446
482
447
483
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
448
484
mc->cred);
449
if (ret != GNUTLS_E_SUCCESS) {
485
if(ret != GNUTLS_E_SUCCESS) {
450
486
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
451
487
safer_gnutls_strerror(ret));
452
gnutls_deinit (*session);
488
gnutls_deinit(*session);
453
489
return -1;
454
490
}
455
491
456
492
/* ignore client certificate if any. */
457
gnutls_certificate_server_set_request (*session,
458
GNUTLS_CERT_IGNORE);
493
gnutls_certificate_server_set_request(*session,
494
GNUTLS_CERT_IGNORE);
459
495
460
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
496
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
461
497
462
498
return 0;
463
499
}
471
507
AvahiIfIndex if_index,
472
508
mandos_context *mc){
473
509
int ret, tcp_sd;
510
ssize_t sret;
474
511
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
475
512
char *buffer = NULL;
476
513
char *decrypted_buffer;
482
519
char interface[IF_NAMESIZE];
483
520
gnutls_session_t session;
484
521
485
ret = init_gnutls_session (mc, &session);
486
if (ret != 0){
522
ret = init_gnutls_session(mc, &session);
523
if(ret != 0){
487
524
return -1;
488
525
}
489
526
490
527
if(debug){
491
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
492
ip, port);
528
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
529
"\n", ip, port);
493
530
}
494
531
495
532
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
497
534
perror("socket");
498
535
return -1;
499
536
}
500
537
501
538
if(debug){
502
539
if(if_indextoname((unsigned int)if_index, interface) == NULL){
503
540
perror("if_indextoname");
506
543
fprintf(stderr, "Binding to interface %s\n", interface);
507
544
}
508
545
509
memset(&to,0,sizeof(to)); /* Spurious warning */
546
memset(&to, 0, sizeof(to));
510
547
to.in6.sin6_family = AF_INET6;
511
548
/* It would be nice to have a way to detect if we were passed an
512
549
IPv4 address here. Now we assume an IPv6 address. */
513
550
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
514
if (ret < 0 ){
551
if(ret < 0 ){
515
552
perror("inet_pton");
516
553
return -1;
517
554
}
519
556
fprintf(stderr, "Bad address: %s\n", ip);
520
557
return -1;
521
558
}
522
to.in6.sin6_port = htons(port); /* Spurious warning */
559
to.in6.sin6_port = htons(port); /* Spurious warnings from
560
-Wconversion and
561
-Wunreachable-code */
523
562
524
563
to.in6.sin6_scope_id = (uint32_t)if_index;
525
564
526
565
if(debug){
527
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
566
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
567
port);
528
568
char addrstr[INET6_ADDRSTRLEN] = "";
529
569
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
530
570
sizeof(addrstr)) == NULL){
537
577
}
538
578
539
579
ret = connect(tcp_sd, &to.in, sizeof(to));
540
if (ret < 0){
580
if(ret < 0){
541
581
perror("connect");
542
582
return -1;
543
583
}
544
584
545
585
const char *out = mandos_protocol_version;
546
586
written = 0;
547
while (true){
587
while(true){
548
588
size_t out_size = strlen(out);
549
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
589
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
550
590
out_size - written));
551
if (ret == -1){
591
if(ret == -1){
552
592
perror("write");
553
593
retval = -1;
554
594
goto mandos_end;
557
597
if(written < out_size){
558
598
continue;
559
599
} else {
560
if (out == mandos_protocol_version){
600
if(out == mandos_protocol_version){
561
601
written = 0;
562
602
out = "\r\n";
563
603
} else {
565
605
}
566
606
}
567
607
}
568
608
569
609
if(debug){
570
610
fprintf(stderr, "Establishing TLS session with %s\n", ip);
571
611
}
572
612
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){
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){
578
620
if(debug){
579
621
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
580
gnutls_perror (ret);
622
gnutls_perror(ret);
581
623
}
582
624
retval = -1;
583
625
goto mandos_end;
589
631
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
590
632
ip);
591
633
}
592
634
593
635
while(true){
594
636
buffer_capacity = adjustbuffer(&buffer, buffer_length,
595
637
buffer_capacity);
596
if (buffer_capacity == 0){
638
if(buffer_capacity == 0){
597
639
perror("adjustbuffer");
598
640
retval = -1;
599
641
goto mandos_end;
600
642
}
601
643
602
ret = gnutls_record_recv(session, buffer+buffer_length,
603
BUFFER_SIZE);
604
if (ret == 0){
644
sret = gnutls_record_recv(session, buffer+buffer_length,
645
BUFFER_SIZE);
646
if(sret == 0){
605
647
break;
606
648
}
607
if (ret < 0){
608
switch(ret){
649
if(sret < 0){
650
switch(sret){
609
651
case GNUTLS_E_INTERRUPTED:
610
652
case GNUTLS_E_AGAIN:
611
653
break;
612
654
case GNUTLS_E_REHANDSHAKE:
613
ret = gnutls_handshake (session);
614
if (ret < 0){
655
do{
656
ret = gnutls_handshake(session);
657
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
658
if(ret < 0){
615
659
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
616
gnutls_perror (ret);
660
gnutls_perror(ret);
617
661
retval = -1;
618
662
goto mandos_end;
619
663
}
622
666
fprintf(stderr, "Unknown error while reading data from"
623
667
" encrypted session with Mandos server\n");
624
668
retval = -1;
625
gnutls_bye (session, GNUTLS_SHUT_RDWR);
669
gnutls_bye(session, GNUTLS_SHUT_RDWR);
626
670
goto mandos_end;
627
671
}
628
672
} else {
629
buffer_length += (size_t) ret;
673
buffer_length += (size_t) sret;
630
674
}
631
675
}
632
676
634
678
fprintf(stderr, "Closing TLS session\n");
635
679
}
636
680
637
gnutls_bye (session, GNUTLS_SHUT_RDWR);
681
gnutls_bye(session, GNUTLS_SHUT_RDWR);
638
682
639
if (buffer_length > 0){
640
decrypted_buffer_size = pgp_packet_decrypt(buffer,
683
if(buffer_length > 0){
684
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
641
685
buffer_length,
642
&decrypted_buffer,
643
keydir);
644
if (decrypted_buffer_size >= 0){
686
&decrypted_buffer);
687
if(decrypted_buffer_size >= 0){
645
688
written = 0;
646
689
while(written < (size_t) decrypted_buffer_size){
647
ret = (int)fwrite (decrypted_buffer + written, 1,
648
(size_t)decrypted_buffer_size - written,
649
stdout);
690
ret = (int)fwrite(decrypted_buffer + written, 1,
691
(size_t)decrypted_buffer_size - written,
692
stdout);
650
693
if(ret == 0 and ferror(stdout)){
651
694
if(debug){
652
695
fprintf(stderr, "Error writing encrypted data: %s\n",
661
704
} else {
662
705
retval = -1;
663
706
}
707
} else {
708
retval = -1;
664
709
}
665
710
666
711
/* Shutdown procedure */
667
712
668
713
mandos_end:
669
714
free(buffer);
670
close(tcp_sd);
671
gnutls_deinit (session);
715
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
716
if(ret == -1){
717
perror("close");
718
}
719
gnutls_deinit(session);
672
720
return retval;
673
721
}
674
722
687
735
flags,
688
736
void* userdata) {
689
737
mandos_context *mc = userdata;
690
assert(r); /* Spurious warning */
738
assert(r);
691
739
692
740
/* Called whenever a service has been resolved successfully or
693
741
timed out */
694
742
695
switch (event) {
743
switch(event) {
696
744
default:
697
745
case AVAHI_RESOLVER_FAILURE:
698
746
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
705
753
char ip[AVAHI_ADDRESS_STR_MAX];
706
754
avahi_address_snprint(ip, sizeof(ip), address);
707
755
if(debug){
708
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
709
" port %d\n", name, host_name, ip, interface, port);
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);
710
759
}
711
760
int ret = start_mandos_communication(ip, port, interface, mc);
712
if (ret == 0){
713
exit(EXIT_SUCCESS);
761
if(ret == 0){
762
avahi_simple_poll_quit(mc->simple_poll);
714
763
}
715
764
}
716
765
}
728
777
flags,
729
778
void* userdata) {
730
779
mandos_context *mc = userdata;
731
assert(b); /* Spurious warning */
780
assert(b);
732
781
733
782
/* Called whenever a new services becomes available on the LAN or
734
783
is removed from the LAN */
735
784
736
switch (event) {
785
switch(event) {
737
786
default:
738
787
case AVAHI_BROWSER_FAILURE:
739
788
748
797
the callback function is called the Avahi server will free the
749
798
resolver for us. */
750
799
751
if (!(avahi_s_service_resolver_new(mc->server, interface,
800
if(!(avahi_s_service_resolver_new(mc->server, interface,
752
801
protocol, name, type, domain,
753
802
AVAHI_PROTO_INET6, 0,
754
803
resolve_callback, mc)))
768
817
}
769
818
}
770
819
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
792
820
int main(int argc, char *argv[]){
793
821
AvahiSServiceBrowser *sb = NULL;
794
822
int error;
795
823
int ret;
824
intmax_t tmpmax;
825
int numchars;
796
826
int exitcode = EXIT_SUCCESS;
797
827
const char *interface = "eth0";
798
828
struct ifreq network;
800
830
uid_t uid;
801
831
gid_t gid;
802
832
char *connect_to = NULL;
833
char tempdir[] = "/tmp/mandosXXXXXX";
803
834
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
804
const char *pubkeyfile = "pubkey.txt";
805
const char *seckeyfile = "seckey.txt";
835
const char *seckey = PATHDIR "/" SECKEY;
836
const char *pubkey = PATHDIR "/" PUBKEY;
837
806
838
mandos_context mc = { .simple_poll = NULL, .server = NULL,
807
.dh_bits = 1024, .priority = "SECURE256"};
839
.dh_bits = 1024, .priority = "SECURE256"
840
":!CTYPE-X.509:+CTYPE-OPENPGP" };
808
841
bool gnutls_initalized = false;
842
bool gpgme_initalized = false;
809
843
810
844
{
811
845
struct argp_option options[] = {
812
846
{ .name = "debug", .key = 128,
813
847
.doc = "Debug mode", .group = 3 },
814
848
{ .name = "connect", .key = 'c',
815
.arg = "IP",
816
.doc = "Connect directly to a sepcified mandos server",
849
.arg = "ADDRESS:PORT",
850
.doc = "Connect directly to a specific Mandos server",
817
851
.group = 1 },
818
852
{ .name = "interface", .key = 'i',
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",
853
.arg = "NAME",
854
.doc = "Interface that will be used to search for Mandos"
855
" servers",
825
856
.group = 1 },
826
857
{ .name = "seckey", .key = 's',
827
.arg = "SECKEY",
828
.doc = "Secret openpgp key for gnutls authentication",
858
.arg = "FILE",
859
.doc = "OpenPGP secret key file base name",
829
860
.group = 1 },
830
861
{ .name = "pubkey", .key = 'p',
831
.arg = "PUBKEY",
832
.doc = "Public openpgp key for gnutls authentication",
862
.arg = "FILE",
863
.doc = "OpenPGP public key file base name",
833
864
.group = 2 },
834
865
{ .name = "dh-bits", .key = 129,
835
866
.arg = "BITS",
836
.doc = "dh-bits to use in gnutls communication",
867
.doc = "Bit length of the prime number used in the"
868
" Diffie-Hellman key exchange",
837
869
.group = 2 },
838
870
{ .name = "priority", .key = 130,
839
.arg = "PRIORITY",
840
.doc = "GNUTLS priority", .group = 1 },
871
.arg = "STRING",
872
.doc = "GnuTLS priority string for the TLS handshake",
873
.group = 1 },
841
874
{ .name = NULL }
842
875
};
843
844
876
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:
877
error_t parse_opt(int key, char *arg,
878
struct argp_state *state) {
879
switch(key) {
880
case 128: /* --debug */
851
881
debug = true;
852
882
break;
853
case 'c':
883
case 'c': /* --connect */
854
884
connect_to = arg;
855
885
break;
856
case 'i':
886
case 'i': /* --interface */
857
887
interface = arg;
858
888
break;
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");
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");
873
900
exit(EXIT_FAILURE);
874
901
}
902
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
875
903
break;
876
case 130:
904
case 130: /* --priority */
877
905
mc.priority = arg;
878
906
break;
879
907
case ARGP_KEY_ARG:
880
argp_usage (state);
908
argp_usage(state);
909
case ARGP_KEY_END:
881
910
break;
882
case ARGP_KEY_END:
883
break;
884
911
default:
885
912
return ARGP_ERR_UNKNOWN;
886
913
}
887
914
return 0;
888
915
}
889
916
890
917
struct argp argp = { .options = options, .parser = parse_opt,
891
918
.args_doc = "",
892
919
.doc = "Mandos client -- Get and decrypt"
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
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
918
959
uid = getuid();
919
960
gid = getgid();
920
961
921
962
ret = setuid(uid);
922
if (ret == -1){
963
if(ret == -1){
923
964
perror("setuid");
924
965
}
925
966
926
967
setgid(gid);
927
if (ret == -1){
968
if(ret == -1){
928
969
perror("setgid");
929
970
}
930
971
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_initalized = 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, "gpgme_initalized failed\n");
989
exitcode = EXIT_FAILURE;
990
goto end;
991
} else {
992
gpgme_initalized = true;
993
}
994
931
995
if_index = (AvahiIfIndex) if_nametoindex(interface);
932
996
if(if_index == 0){
933
997
fprintf(stderr, "No such interface: \"%s\"\n", interface);
943
1007
exitcode = EXIT_FAILURE;
944
1008
goto end;
945
1009
}
946
errno = 0;
947
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
948
if(errno){
949
perror("Bad port number");
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");
950
1015
exitcode = EXIT_FAILURE;
951
1016
goto end;
952
1017
}
1018
port = (uint16_t)tmpmax;
953
1019
*address = '\0';
954
1020
address = connect_to;
955
1021
ret = start_mandos_communication(address, port, if_index, &mc);
961
1027
goto end;
962
1028
}
963
1029
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){
1030
if(not debug){
992
1031
avahi_set_log_function(empty_log);
993
1032
}
994
1033
997
1036
998
1037
/* Allocate main Avahi loop object */
999
1038
mc.simple_poll = avahi_simple_poll_new();
1000
if (mc.simple_poll == NULL) {
1039
if(mc.simple_poll == NULL) {
1001
1040
fprintf(stderr, "Avahi: Failed to create simple poll"
1002
1041
" object.\n");
1003
1042
exitcode = EXIT_FAILURE;
1004
1043
goto end;
1005
1044
}
1006
1045
1007
1046
{
1008
1047
AvahiServerConfig config;
1009
1048
/* Do not publish any local Zeroconf records */
1012
1051
config.publish_addresses = 0;
1013
1052
config.publish_workstation = 0;
1014
1053
config.publish_domain = 0;
1015
1054
1016
1055
/* Allocate a new server */
1017
1056
mc.server = avahi_server_new(avahi_simple_poll_get
1018
1057
(mc.simple_poll), &config, NULL,
1019
1058
NULL, &error);
1020
1059
1021
1060
/* Free the Avahi configuration data */
1022
1061
avahi_server_config_free(&config);
1023
1062
}
1024
1063
1025
1064
/* Check if creating the Avahi server object succeeded */
1026
if (mc.server == NULL) {
1065
if(mc.server == NULL) {
1027
1066
fprintf(stderr, "Failed to create Avahi server: %s\n",
1028
1067
avahi_strerror(error));
1029
1068
exitcode = EXIT_FAILURE;
1035
1074
AVAHI_PROTO_INET6,
1036
1075
"_mandos._tcp", NULL, 0,
1037
1076
browse_callback, &mc);
1038
if (sb == NULL) {
1077
if(sb == NULL) {
1039
1078
fprintf(stderr, "Failed to create service browser: %s\n",
1040
1079
avahi_strerror(avahi_server_errno(mc.server)));
1041
1080
exitcode = EXIT_FAILURE;
1043
1082
}
1044
1083
1045
1084
/* Run the main loop */
1046
1047
if (debug){
1085
1086
if(debug){
1048
1087
fprintf(stderr, "Starting Avahi loop search\n");
1049
1088
}
1050
1089
1051
1090
avahi_simple_poll_loop(mc.simple_poll);
1052
1091
1053
1092
end:
1054
1055
if (debug){
1093
1094
if(debug){
1056
1095
fprintf(stderr, "%s exiting\n", argv[0]);
1057
1096
}
1058
1097
1059
1098
/* Cleanup things */
1060
if (sb != NULL)
1099
if(sb != NULL)
1061
1100
avahi_s_service_browser_free(sb);
1062
1101
1063
if (mc.server != NULL)
1102
if(mc.server != NULL)
1064
1103
avahi_server_free(mc.server);
1065
1066
if (mc.simple_poll != NULL)
1104
1105
if(mc.simple_poll != NULL)
1067
1106
avahi_simple_poll_free(mc.simple_poll);
1068
free(pubkeyfile);
1069
free(seckeyfile);
1070
1071
if (gnutls_initalized){
1072
gnutls_certificate_free_credentials (mc.cred);
1073
gnutls_global_deinit ();
1074
}
1075
1107
1108
if(gnutls_initalized){
1109
gnutls_certificate_free_credentials(mc.cred);
1110
gnutls_global_deinit();
1111
gnutls_dh_params_deinit(mc.dh_params);
1112
}
1113
1114
if(gpgme_initalized){
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
1076
1157
return exitcode;
1077
1158
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0