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- Committer: Björn Påhlsson
- Date: 2009-02-06 01:13:58 UTC
- mto: (237.7.1 mandos) (24.1.154 mandos)
- mto: This revision was merged to the branch mainline in revision 250.
- Revision ID: belorn@braxen-20090206011358-d92mnhobdv0d7csw
new domain name for d-bus
- 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
#include <stdint.h> /* uint16_t, uint32_t */
41
#include <stddef.h> /* NULL, size_t, ssize_t */
42
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
43
srand() */
44
#include <stdbool.h> /* bool, true */
45
#include <string.h> /* memset(), strcmp(), strlen(),
46
strerror(), asprintf(), strcpy() */
47
#include <sys/ioctl.h> /* ioctl */
48
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
49
sockaddr_in6, PF_INET6,
50
SOCK_STREAM, INET6_ADDRSTRLEN,
51
uid_t, gid_t, open(), opendir(),
52
DIR */
53
#include <sys/stat.h> /* open() */
54
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
55
struct in6_addr, inet_pton(),
56
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(), nanosleep() */
44
64
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
45
SIOCSIFFLAGS */
65
SIOCSIFFLAGS, if_indextoname(),
66
if_nametoindex(), IF_NAMESIZE */
67
#include <netinet/in.h>
68
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
69
getuid(), getgid(), setuid(),
70
setgid() */
71
#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 */
77
#include <sys/klog.h> /* klogctl() */
46
78
79
/* Avahi */
80
/* All Avahi types, constants and functions
81
Avahi*, avahi_*,
82
AVAHI_* */
47
83
#include <avahi-core/core.h>
48
84
#include <avahi-core/lookup.h>
49
85
#include <avahi-core/log.h>
51
87
#include <avahi-common/malloc.h>
52
88
#include <avahi-common/error.h>
53
89
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 */
90
/* GnuTLS */
91
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
92
functions:
93
gnutls_*
94
init_gnutls_session(),
95
GNUTLS_* */
96
#include <gnutls/openpgp.h>
97
/* gnutls_certificate_set_openpgp_key_file(),
98
GNUTLS_OPENPGP_FMT_BASE64 */
60
99
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
100
/* GPGME */
72
#include <errno.h> /* perror() */
73
#include <gpgme.h>
101
#include <gpgme.h> /* All GPGME types, constants and
102
functions:
103
gpgme_*
104
GPGME_PROTOCOL_OpenPGP,
105
GPG_ERR_NO_* */
74
106
75
107
#define BUFFER_SIZE 256
76
108
109
#define PATHDIR "/conf/conf.d/mandos"
110
#define SECKEY "seckey.txt"
111
#define PUBKEY "pubkey.txt"
112
77
113
bool debug = false;
78
static const char *keydir = "/conf/conf.d/mandos";
79
114
static const char mandos_protocol_version[] = "1";
80
const char *argp_program_version = "mandosclient 0.9";
115
const char *argp_program_version = "mandos-client " VERSION;
81
116
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
82
117
83
118
/* Used for passing in values through the Avahi callback functions */
88
123
unsigned int dh_bits;
89
124
gnutls_dh_params_t dh_params;
90
125
const char *priority;
126
gpgme_ctx_t ctx;
91
127
} mandos_context;
92
128
93
129
/*
97
133
*/
98
134
size_t adjustbuffer(char **buffer, size_t buffer_length,
99
135
size_t buffer_capacity){
100
if (buffer_length + BUFFER_SIZE > buffer_capacity){
136
if(buffer_length + BUFFER_SIZE > buffer_capacity){
101
137
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
102
if (buffer == NULL){
138
if(buffer == NULL){
103
139
return 0;
104
140
}
105
141
buffer_capacity += BUFFER_SIZE;
108
144
}
109
145
110
146
/*
111
* Decrypt OpenPGP data using keyrings in HOMEDIR.
112
* Returns -1 on error
147
* Initialize GPGME.
113
148
*/
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;
149
static bool init_gpgme(mandos_context *mc, const char *seckey,
150
const char *pubkey, const char *tempdir){
151
int ret;
120
152
gpgme_error_t rc;
121
ssize_t ret;
122
size_t plaintext_capacity = 0;
123
ssize_t plaintext_length = 0;
124
153
gpgme_engine_info_t engine_info;
125
154
126
if (debug){
127
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
155
156
/*
157
* Helper function to insert pub and seckey to the enigne keyring.
158
*/
159
bool import_key(const char *filename){
160
int fd;
161
gpgme_data_t pgp_data;
162
163
fd = (int)TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
164
if(fd == -1){
165
perror("open");
166
return false;
167
}
168
169
rc = gpgme_data_new_from_fd(&pgp_data, fd);
170
if(rc != GPG_ERR_NO_ERROR){
171
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
172
gpgme_strsource(rc), gpgme_strerror(rc));
173
return false;
174
}
175
176
rc = gpgme_op_import(mc->ctx, pgp_data);
177
if(rc != GPG_ERR_NO_ERROR){
178
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
179
gpgme_strsource(rc), gpgme_strerror(rc));
180
return false;
181
}
182
183
ret = (int)TEMP_FAILURE_RETRY(close(fd));
184
if(ret == -1){
185
perror("close");
186
}
187
gpgme_data_release(pgp_data);
188
return true;
189
}
190
191
if(debug){
192
fprintf(stderr, "Initialize gpgme\n");
128
193
}
129
194
130
195
/* Init GPGME */
131
196
gpgme_check_version(NULL);
132
197
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
133
if (rc != GPG_ERR_NO_ERROR){
198
if(rc != GPG_ERR_NO_ERROR){
134
199
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
135
200
gpgme_strsource(rc), gpgme_strerror(rc));
136
return -1;
201
return false;
137
202
}
138
203
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){
204
/* Set GPGME home directory for the OpenPGP engine only */
205
rc = gpgme_get_engine_info(&engine_info);
206
if(rc != GPG_ERR_NO_ERROR){
142
207
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
143
208
gpgme_strsource(rc), gpgme_strerror(rc));
144
return -1;
209
return false;
145
210
}
146
211
while(engine_info != NULL){
147
212
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
148
213
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
149
engine_info->file_name, homedir);
214
engine_info->file_name, tempdir);
150
215
break;
151
216
}
152
217
engine_info = engine_info->next;
153
218
}
154
219
if(engine_info == NULL){
155
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
156
return -1;
220
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
221
return false;
222
}
223
224
/* Create new GPGME "context" */
225
rc = gpgme_new(&(mc->ctx));
226
if(rc != GPG_ERR_NO_ERROR){
227
fprintf(stderr, "bad gpgme_new: %s: %s\n",
228
gpgme_strsource(rc), gpgme_strerror(rc));
229
return false;
230
}
231
232
if(not import_key(pubkey) or not import_key(seckey)){
233
return false;
234
}
235
236
return true;
237
}
238
239
/*
240
* Decrypt OpenPGP data.
241
* Returns -1 on error
242
*/
243
static ssize_t pgp_packet_decrypt(const mandos_context *mc,
244
const char *cryptotext,
245
size_t crypto_size,
246
char **plaintext){
247
gpgme_data_t dh_crypto, dh_plain;
248
gpgme_error_t rc;
249
ssize_t ret;
250
size_t plaintext_capacity = 0;
251
ssize_t plaintext_length = 0;
252
253
if(debug){
254
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
157
255
}
158
256
159
257
/* Create new GPGME data buffer from memory cryptotext */
160
258
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
161
259
0);
162
if (rc != GPG_ERR_NO_ERROR){
260
if(rc != GPG_ERR_NO_ERROR){
163
261
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
164
262
gpgme_strsource(rc), gpgme_strerror(rc));
165
263
return -1;
167
265
168
266
/* Create new empty GPGME data buffer for the plaintext */
169
267
rc = gpgme_data_new(&dh_plain);
170
if (rc != GPG_ERR_NO_ERROR){
268
if(rc != GPG_ERR_NO_ERROR){
171
269
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
172
270
gpgme_strsource(rc), gpgme_strerror(rc));
173
271
gpgme_data_release(dh_crypto);
174
272
return -1;
175
273
}
176
274
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
275
/* Decrypt data from the cryptotext data buffer to the plaintext
187
276
data buffer */
188
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
189
if (rc != GPG_ERR_NO_ERROR){
277
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
278
if(rc != GPG_ERR_NO_ERROR){
190
279
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
191
280
gpgme_strsource(rc), gpgme_strerror(rc));
192
281
plaintext_length = -1;
282
if(debug){
283
gpgme_decrypt_result_t result;
284
result = gpgme_op_decrypt_result(mc->ctx);
285
if(result == NULL){
286
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
287
} else {
288
fprintf(stderr, "Unsupported algorithm: %s\n",
289
result->unsupported_algorithm);
290
fprintf(stderr, "Wrong key usage: %u\n",
291
result->wrong_key_usage);
292
if(result->file_name != NULL){
293
fprintf(stderr, "File name: %s\n", result->file_name);
294
}
295
gpgme_recipient_t recipient;
296
recipient = result->recipients;
297
if(recipient){
298
while(recipient != NULL){
299
fprintf(stderr, "Public key algorithm: %s\n",
300
gpgme_pubkey_algo_name(recipient->pubkey_algo));
301
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
302
fprintf(stderr, "Secret key available: %s\n",
303
recipient->status == GPG_ERR_NO_SECKEY
304
? "No" : "Yes");
305
recipient = recipient->next;
306
}
307
}
308
}
309
}
193
310
goto decrypt_end;
194
311
}
195
312
197
314
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
198
315
}
199
316
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
317
/* 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");
318
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
319
perror("gpgme_data_seek");
232
320
plaintext_length = -1;
233
321
goto decrypt_end;
234
322
}
238
326
plaintext_capacity = adjustbuffer(plaintext,
239
327
(size_t)plaintext_length,
240
328
plaintext_capacity);
241
if (plaintext_capacity == 0){
329
if(plaintext_capacity == 0){
242
330
perror("adjustbuffer");
243
331
plaintext_length = -1;
244
332
goto decrypt_end;
247
335
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
248
336
BUFFER_SIZE);
249
337
/* Print the data, if any */
250
if (ret == 0){
338
if(ret == 0){
251
339
/* EOF */
252
340
break;
253
341
}
258
346
}
259
347
plaintext_length += ret;
260
348
}
261
349
262
350
if(debug){
263
351
fprintf(stderr, "Decrypted password is: ");
264
352
for(ssize_t i = 0; i < plaintext_length; i++){
277
365
return plaintext_length;
278
366
}
279
367
280
static const char * safer_gnutls_strerror (int value) {
281
const char *ret = gnutls_strerror (value);
282
if (ret == NULL)
368
static const char * safer_gnutls_strerror(int value) {
369
const char *ret = gnutls_strerror(value); /* Spurious warning from
370
-Wunreachable-code */
371
if(ret == NULL)
283
372
ret = "(unknown)";
284
373
return ret;
285
374
}
291
380
}
292
381
293
382
static int init_gnutls_global(mandos_context *mc,
294
const char *pubkeyfile,
295
const char *seckeyfile){
383
const char *pubkeyfilename,
384
const char *seckeyfilename){
296
385
int ret;
297
386
298
387
if(debug){
299
388
fprintf(stderr, "Initializing GnuTLS\n");
300
389
}
301
302
if ((ret = gnutls_global_init ())
303
!= GNUTLS_E_SUCCESS) {
304
fprintf (stderr, "GnuTLS global_init: %s\n",
305
safer_gnutls_strerror(ret));
390
391
ret = gnutls_global_init();
392
if(ret != GNUTLS_E_SUCCESS) {
393
fprintf(stderr, "GnuTLS global_init: %s\n",
394
safer_gnutls_strerror(ret));
306
395
return -1;
307
396
}
308
397
309
if (debug){
398
if(debug){
310
399
/* "Use a log level over 10 to enable all debugging options."
311
400
* - GnuTLS manual
312
401
*/
315
404
}
316
405
317
406
/* 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));
407
gnutls_certificate_allocate_credentials(&mc->cred);
408
if(ret != GNUTLS_E_SUCCESS){
409
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
410
* from
411
* -Wunreachable-code
412
*/
413
safer_gnutls_strerror(ret));
414
gnutls_global_deinit();
322
415
return -1;
323
416
}
324
417
325
418
if(debug){
326
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
327
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
328
seckeyfile);
419
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
420
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
421
seckeyfilename);
329
422
}
330
423
331
424
ret = gnutls_certificate_set_openpgp_key_file
332
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
333
if (ret != GNUTLS_E_SUCCESS) {
425
(mc->cred, pubkeyfilename, seckeyfilename,
426
GNUTLS_OPENPGP_FMT_BASE64);
427
if(ret != GNUTLS_E_SUCCESS) {
334
428
fprintf(stderr,
335
429
"Error[%d] while reading the OpenPGP key pair ('%s',"
336
" '%s')\n", ret, pubkeyfile, seckeyfile);
337
fprintf(stdout, "The GnuTLS error is: %s\n",
430
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
431
fprintf(stderr, "The GnuTLS error is: %s\n",
338
432
safer_gnutls_strerror(ret));
339
return -1;
433
goto globalfail;
340
434
}
341
435
342
436
/* GnuTLS server initialization */
343
437
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;
438
if(ret != GNUTLS_E_SUCCESS) {
439
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
440
" %s\n", safer_gnutls_strerror(ret));
441
goto globalfail;
348
442
}
349
443
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;
444
if(ret != GNUTLS_E_SUCCESS) {
445
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
446
safer_gnutls_strerror(ret));
447
goto globalfail;
354
448
}
355
449
356
450
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
357
451
358
452
return 0;
453
454
globalfail:
455
456
gnutls_certificate_free_credentials(mc->cred);
457
gnutls_global_deinit();
458
gnutls_dh_params_deinit(mc->dh_params);
459
return -1;
359
460
}
360
461
361
462
static int init_gnutls_session(mandos_context *mc,
363
464
int ret;
364
465
/* GnuTLS session creation */
365
466
ret = gnutls_init(session, GNUTLS_SERVER);
366
if (ret != GNUTLS_E_SUCCESS){
467
if(ret != GNUTLS_E_SUCCESS){
367
468
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
368
469
safer_gnutls_strerror(ret));
369
470
}
371
472
{
372
473
const char *err;
373
474
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
374
if (ret != GNUTLS_E_SUCCESS) {
475
if(ret != GNUTLS_E_SUCCESS) {
375
476
fprintf(stderr, "Syntax error at: %s\n", err);
376
477
fprintf(stderr, "GnuTLS error: %s\n",
377
478
safer_gnutls_strerror(ret));
479
gnutls_deinit(*session);
378
480
return -1;
379
481
}
380
482
}
381
483
382
484
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
383
485
mc->cred);
384
if (ret != GNUTLS_E_SUCCESS) {
486
if(ret != GNUTLS_E_SUCCESS) {
385
487
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
386
488
safer_gnutls_strerror(ret));
489
gnutls_deinit(*session);
387
490
return -1;
388
491
}
389
492
390
493
/* ignore client certificate if any. */
391
gnutls_certificate_server_set_request (*session,
392
GNUTLS_CERT_IGNORE);
494
gnutls_certificate_server_set_request(*session,
495
GNUTLS_CERT_IGNORE);
393
496
394
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
497
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
395
498
396
499
return 0;
397
500
}
405
508
AvahiIfIndex if_index,
406
509
mandos_context *mc){
407
510
int ret, tcp_sd;
511
ssize_t sret;
408
512
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
409
513
char *buffer = NULL;
410
514
char *decrypted_buffer;
416
520
char interface[IF_NAMESIZE];
417
521
gnutls_session_t session;
418
522
419
ret = init_gnutls_session (mc, &session);
420
if (ret != 0){
523
ret = init_gnutls_session(mc, &session);
524
if(ret != 0){
421
525
return -1;
422
526
}
423
527
424
528
if(debug){
425
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
426
ip, port);
529
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
530
"\n", ip, port);
427
531
}
428
532
429
533
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
431
535
perror("socket");
432
536
return -1;
433
537
}
434
538
435
539
if(debug){
436
540
if(if_indextoname((unsigned int)if_index, interface) == NULL){
437
541
perror("if_indextoname");
440
544
fprintf(stderr, "Binding to interface %s\n", interface);
441
545
}
442
546
443
memset(&to,0,sizeof(to)); /* Spurious warning */
547
memset(&to, 0, sizeof(to));
444
548
to.in6.sin6_family = AF_INET6;
445
549
/* It would be nice to have a way to detect if we were passed an
446
550
IPv4 address here. Now we assume an IPv6 address. */
447
551
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
448
if (ret < 0 ){
552
if(ret < 0 ){
449
553
perror("inet_pton");
450
554
return -1;
451
555
}
453
557
fprintf(stderr, "Bad address: %s\n", ip);
454
558
return -1;
455
559
}
456
to.in6.sin6_port = htons(port); /* Spurious warning */
560
to.in6.sin6_port = htons(port); /* Spurious warnings from
561
-Wconversion and
562
-Wunreachable-code */
457
563
458
564
to.in6.sin6_scope_id = (uint32_t)if_index;
459
565
460
566
if(debug){
461
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
567
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
568
port);
462
569
char addrstr[INET6_ADDRSTRLEN] = "";
463
570
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
464
571
sizeof(addrstr)) == NULL){
471
578
}
472
579
473
580
ret = connect(tcp_sd, &to.in, sizeof(to));
474
if (ret < 0){
581
if(ret < 0){
475
582
perror("connect");
476
583
return -1;
477
584
}
478
585
479
586
const char *out = mandos_protocol_version;
480
587
written = 0;
481
while (true){
588
while(true){
482
589
size_t out_size = strlen(out);
483
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
590
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
484
591
out_size - written));
485
if (ret == -1){
592
if(ret == -1){
486
593
perror("write");
487
594
retval = -1;
488
595
goto mandos_end;
491
598
if(written < out_size){
492
599
continue;
493
600
} else {
494
if (out == mandos_protocol_version){
601
if(out == mandos_protocol_version){
495
602
written = 0;
496
603
out = "\r\n";
497
604
} else {
499
606
}
500
607
}
501
608
}
502
609
503
610
if(debug){
504
611
fprintf(stderr, "Establishing TLS session with %s\n", ip);
505
612
}
506
613
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){
614
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
615
616
do{
617
ret = gnutls_handshake(session);
618
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
619
620
if(ret != GNUTLS_E_SUCCESS){
512
621
if(debug){
513
622
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
514
gnutls_perror (ret);
623
gnutls_perror(ret);
515
624
}
516
625
retval = -1;
517
626
goto mandos_end;
523
632
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
524
633
ip);
525
634
}
526
635
527
636
while(true){
528
637
buffer_capacity = adjustbuffer(&buffer, buffer_length,
529
638
buffer_capacity);
530
if (buffer_capacity == 0){
639
if(buffer_capacity == 0){
531
640
perror("adjustbuffer");
532
641
retval = -1;
533
642
goto mandos_end;
534
643
}
535
644
536
ret = gnutls_record_recv(session, buffer+buffer_length,
537
BUFFER_SIZE);
538
if (ret == 0){
645
sret = gnutls_record_recv(session, buffer+buffer_length,
646
BUFFER_SIZE);
647
if(sret == 0){
539
648
break;
540
649
}
541
if (ret < 0){
542
switch(ret){
650
if(sret < 0){
651
switch(sret){
543
652
case GNUTLS_E_INTERRUPTED:
544
653
case GNUTLS_E_AGAIN:
545
654
break;
546
655
case GNUTLS_E_REHANDSHAKE:
547
ret = gnutls_handshake (session);
548
if (ret < 0){
656
do{
657
ret = gnutls_handshake(session);
658
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
659
if(ret < 0){
549
660
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
550
gnutls_perror (ret);
661
gnutls_perror(ret);
551
662
retval = -1;
552
663
goto mandos_end;
553
664
}
556
667
fprintf(stderr, "Unknown error while reading data from"
557
668
" encrypted session with Mandos server\n");
558
669
retval = -1;
559
gnutls_bye (session, GNUTLS_SHUT_RDWR);
670
gnutls_bye(session, GNUTLS_SHUT_RDWR);
560
671
goto mandos_end;
561
672
}
562
673
} else {
563
buffer_length += (size_t) ret;
674
buffer_length += (size_t) sret;
564
675
}
565
676
}
566
677
568
679
fprintf(stderr, "Closing TLS session\n");
569
680
}
570
681
571
gnutls_bye (session, GNUTLS_SHUT_RDWR);
682
gnutls_bye(session, GNUTLS_SHUT_RDWR);
572
683
573
if (buffer_length > 0){
574
decrypted_buffer_size = pgp_packet_decrypt(buffer,
684
if(buffer_length > 0){
685
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
575
686
buffer_length,
576
&decrypted_buffer,
577
keydir);
578
if (decrypted_buffer_size >= 0){
687
&decrypted_buffer);
688
if(decrypted_buffer_size >= 0){
579
689
written = 0;
580
690
while(written < (size_t) decrypted_buffer_size){
581
ret = (int)fwrite (decrypted_buffer + written, 1,
582
(size_t)decrypted_buffer_size - written,
583
stdout);
691
ret = (int)fwrite(decrypted_buffer + written, 1,
692
(size_t)decrypted_buffer_size - written,
693
stdout);
584
694
if(ret == 0 and ferror(stdout)){
585
695
if(debug){
586
696
fprintf(stderr, "Error writing encrypted data: %s\n",
595
705
} else {
596
706
retval = -1;
597
707
}
708
} else {
709
retval = -1;
598
710
}
599
711
600
712
/* Shutdown procedure */
601
713
602
714
mandos_end:
603
715
free(buffer);
604
close(tcp_sd);
605
gnutls_deinit (session);
606
gnutls_certificate_free_credentials (mc->cred);
607
gnutls_global_deinit ();
716
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
717
if(ret == -1){
718
perror("close");
719
}
720
gnutls_deinit(session);
608
721
return retval;
609
722
}
610
723
623
736
flags,
624
737
void* userdata) {
625
738
mandos_context *mc = userdata;
626
assert(r); /* Spurious warning */
739
assert(r);
627
740
628
741
/* Called whenever a service has been resolved successfully or
629
742
timed out */
630
743
631
switch (event) {
744
switch(event) {
632
745
default:
633
746
case AVAHI_RESOLVER_FAILURE:
634
747
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
641
754
char ip[AVAHI_ADDRESS_STR_MAX];
642
755
avahi_address_snprint(ip, sizeof(ip), address);
643
756
if(debug){
644
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
645
" port %d\n", name, host_name, ip, interface, port);
757
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
758
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
759
ip, (intmax_t)interface, port);
646
760
}
647
761
int ret = start_mandos_communication(ip, port, interface, mc);
648
if (ret == 0){
649
exit(EXIT_SUCCESS);
762
if(ret == 0){
763
avahi_simple_poll_quit(mc->simple_poll);
650
764
}
651
765
}
652
766
}
664
778
flags,
665
779
void* userdata) {
666
780
mandos_context *mc = userdata;
667
assert(b); /* Spurious warning */
781
assert(b);
668
782
669
783
/* Called whenever a new services becomes available on the LAN or
670
784
is removed from the LAN */
671
785
672
switch (event) {
786
switch(event) {
673
787
default:
674
788
case AVAHI_BROWSER_FAILURE:
675
789
684
798
the callback function is called the Avahi server will free the
685
799
resolver for us. */
686
800
687
if (!(avahi_s_service_resolver_new(mc->server, interface,
801
if(!(avahi_s_service_resolver_new(mc->server, interface,
688
802
protocol, name, type, domain,
689
803
AVAHI_PROTO_INET6, 0,
690
804
resolve_callback, mc)))
704
818
}
705
819
}
706
820
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
821
int main(int argc, char *argv[]){
729
822
AvahiSServiceBrowser *sb = NULL;
730
823
int error;
731
824
int ret;
825
intmax_t tmpmax;
826
int numchars;
732
827
int exitcode = EXIT_SUCCESS;
733
828
const char *interface = "eth0";
734
829
struct ifreq network;
736
831
uid_t uid;
737
832
gid_t gid;
738
833
char *connect_to = NULL;
834
char tempdir[] = "/tmp/mandosXXXXXX";
739
835
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
740
const char *pubkeyfile = "pubkey.txt";
741
const char *seckeyfile = "seckey.txt";
836
const char *seckey = PATHDIR "/" SECKEY;
837
const char *pubkey = PATHDIR "/" PUBKEY;
838
742
839
mandos_context mc = { .simple_poll = NULL, .server = NULL,
743
.dh_bits = 1024, .priority = "SECURE256"};
840
.dh_bits = 1024, .priority = "SECURE256"
841
":!CTYPE-X.509:+CTYPE-OPENPGP" };
842
bool gnutls_initalized = false;
843
bool gpgme_initalized = false;
844
double delay = 2.5;
744
845
745
846
{
746
847
struct argp_option options[] = {
747
848
{ .name = "debug", .key = 128,
748
849
.doc = "Debug mode", .group = 3 },
749
850
{ .name = "connect", .key = 'c',
750
.arg = "IP",
751
.doc = "Connect directly to a sepcified mandos server",
851
.arg = "ADDRESS:PORT",
852
.doc = "Connect directly to a specific Mandos server",
752
853
.group = 1 },
753
854
{ .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",
855
.arg = "NAME",
856
.doc = "Interface that will be used to search for Mandos"
857
" servers",
760
858
.group = 1 },
761
859
{ .name = "seckey", .key = 's',
762
.arg = "SECKEY",
763
.doc = "Secret openpgp key for gnutls authentication",
860
.arg = "FILE",
861
.doc = "OpenPGP secret key file base name",
764
862
.group = 1 },
765
863
{ .name = "pubkey", .key = 'p',
766
.arg = "PUBKEY",
767
.doc = "Public openpgp key for gnutls authentication",
864
.arg = "FILE",
865
.doc = "OpenPGP public key file base name",
768
866
.group = 2 },
769
867
{ .name = "dh-bits", .key = 129,
770
868
.arg = "BITS",
771
.doc = "dh-bits to use in gnutls communication",
869
.doc = "Bit length of the prime number used in the"
870
" Diffie-Hellman key exchange",
772
871
.group = 2 },
773
872
{ .name = "priority", .key = 130,
774
.arg = "PRIORITY",
775
.doc = "GNUTLS priority", .group = 1 },
873
.arg = "STRING",
874
.doc = "GnuTLS priority string for the TLS handshake",
875
.group = 1 },
876
{ .name = "delay", .key = 131,
877
.arg = "SECONDS",
878
.doc = "Maximum delay to wait for interface startup",
879
.group = 2 },
776
880
{ .name = NULL }
777
881
};
778
779
882
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:
883
error_t parse_opt(int key, char *arg,
884
struct argp_state *state) {
885
switch(key) {
886
case 128: /* --debug */
786
887
debug = true;
787
888
break;
788
case 'c':
889
case 'c': /* --connect */
789
890
connect_to = arg;
790
891
break;
791
case 'i':
892
case 'i': /* --interface */
792
893
interface = arg;
793
894
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");
895
case 's': /* --seckey */
896
seckey = arg;
897
break;
898
case 'p': /* --pubkey */
899
pubkey = arg;
900
break;
901
case 129: /* --dh-bits */
902
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
903
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
904
or arg[numchars] != '\0'){
905
fprintf(stderr, "Bad number of DH bits\n");
808
906
exit(EXIT_FAILURE);
809
907
}
908
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
810
909
break;
811
case 130:
910
case 130: /* --priority */
812
911
mc.priority = arg;
813
912
break;
913
case 131: /* --delay */
914
ret = sscanf(arg, "%lf%n", &delay, &numchars);
915
if(ret < 1 or arg[numchars] != '\0'){
916
fprintf(stderr, "Bad delay\n");
917
exit(EXIT_FAILURE);
918
}
919
break;
814
920
case ARGP_KEY_ARG:
815
argp_usage (state);
921
argp_usage(state);
922
case ARGP_KEY_END:
816
923
break;
817
case ARGP_KEY_END:
818
break;
819
924
default:
820
925
return ARGP_ERR_UNKNOWN;
821
926
}
822
927
return 0;
823
928
}
824
929
825
930
struct argp argp = { .options = options, .parser = parse_opt,
826
931
.args_doc = "",
827
932
.doc = "Mandos client -- Get and decrypt"
828
" passwords from mandos server" };
829
argp_parse (&argp, argc, argv, 0, 0, NULL);
830
}
831
832
pubkeyfile = combinepath(keydir, pubkeyfile);
833
if (pubkeyfile == NULL){
834
perror("combinepath");
835
exitcode = EXIT_FAILURE;
836
goto end;
837
}
838
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
933
" passwords from a Mandos server" };
934
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
935
if(ret == ARGP_ERR_UNKNOWN){
936
fprintf(stderr, "Unknown error while parsing arguments\n");
937
exitcode = EXIT_FAILURE;
938
goto end;
939
}
940
}
941
942
/* If the interface is down, bring it up */
943
{
944
// Lower kernel loglevel to KERN_NOTICE to avoid
945
// KERN_INFO messages to mess up the prompt
946
ret = klogctl(8, NULL, 5);
947
if(ret == -1){
948
perror("klogctl");
949
}
950
951
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
952
if(sd < 0) {
953
perror("socket");
954
exitcode = EXIT_FAILURE;
955
ret = klogctl(7, NULL, 0);
956
if(ret == -1){
957
perror("klogctl");
958
}
959
goto end;
960
}
961
strcpy(network.ifr_name, interface);
962
ret = ioctl(sd, SIOCGIFFLAGS, &network);
963
if(ret == -1){
964
perror("ioctl SIOCGIFFLAGS");
965
ret = klogctl(7, NULL, 0);
966
if(ret == -1){
967
perror("klogctl");
968
}
969
exitcode = EXIT_FAILURE;
970
goto end;
971
}
972
if((network.ifr_flags & IFF_UP) == 0){
973
network.ifr_flags |= IFF_UP;
974
ret = ioctl(sd, SIOCSIFFLAGS, &network);
975
if(ret == -1){
976
perror("ioctl SIOCSIFFLAGS");
977
exitcode = EXIT_FAILURE;
978
ret = klogctl(7, NULL, 0);
979
if(ret == -1){
980
perror("klogctl");
981
}
982
goto end;
983
}
984
}
985
// sleep checking until interface is running
986
for(int i=0; i < delay * 4; i++){
987
ret = ioctl(sd, SIOCGIFFLAGS, &network);
988
if(ret == -1){
989
perror("ioctl SIOCGIFFLAGS");
990
} else if(network.ifr_flags & IFF_RUNNING){
991
break;
992
}
993
struct timespec sleeptime = { .tv_nsec = 250000000 };
994
nanosleep(&sleeptime, NULL);
995
}
996
ret = (int)TEMP_FAILURE_RETRY(close(sd));
997
if(ret == -1){
998
perror("close");
999
}
1000
// Restores kernel loglevel to default
1001
ret = klogctl(7, NULL, 0);
1002
if(ret == -1){
1003
perror("klogctl");
1004
}
1005
}
1006
851
1007
uid = getuid();
852
1008
gid = getgid();
853
1009
854
1010
ret = setuid(uid);
855
if (ret == -1){
1011
if(ret == -1){
856
1012
perror("setuid");
857
1013
}
858
1014
859
1015
setgid(gid);
860
if (ret == -1){
1016
if(ret == -1){
861
1017
perror("setgid");
862
1018
}
863
1019
1020
ret = init_gnutls_global(&mc, pubkey, seckey);
1021
if(ret == -1){
1022
fprintf(stderr, "init_gnutls_global failed\n");
1023
exitcode = EXIT_FAILURE;
1024
goto end;
1025
} else {
1026
gnutls_initalized = true;
1027
}
1028
1029
if(mkdtemp(tempdir) == NULL){
1030
perror("mkdtemp");
1031
tempdir[0] = '\0';
1032
goto end;
1033
}
1034
1035
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
1036
fprintf(stderr, "gpgme_initalized failed\n");
1037
exitcode = EXIT_FAILURE;
1038
goto end;
1039
} else {
1040
gpgme_initalized = true;
1041
}
1042
864
1043
if_index = (AvahiIfIndex) if_nametoindex(interface);
865
1044
if(if_index == 0){
866
1045
fprintf(stderr, "No such interface: \"%s\"\n", interface);
876
1055
exitcode = EXIT_FAILURE;
877
1056
goto end;
878
1057
}
879
errno = 0;
880
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
881
if(errno){
882
perror("Bad port number");
1058
uint16_t port;
1059
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1060
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1061
or address[numchars+1] != '\0'){
1062
fprintf(stderr, "Bad port number\n");
883
1063
exitcode = EXIT_FAILURE;
884
1064
goto end;
885
1065
}
1066
port = (uint16_t)tmpmax;
886
1067
*address = '\0';
887
1068
address = connect_to;
888
1069
ret = start_mandos_communication(address, port, if_index, &mc);
894
1075
goto end;
895
1076
}
896
1077
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){
1078
if(not debug){
925
1079
avahi_set_log_function(empty_log);
926
1080
}
927
1081
930
1084
931
1085
/* Allocate main Avahi loop object */
932
1086
mc.simple_poll = avahi_simple_poll_new();
933
if (mc.simple_poll == NULL) {
1087
if(mc.simple_poll == NULL) {
934
1088
fprintf(stderr, "Avahi: Failed to create simple poll"
935
1089
" object.\n");
936
1090
exitcode = EXIT_FAILURE;
937
1091
goto end;
938
1092
}
939
1093
940
1094
{
941
1095
AvahiServerConfig config;
942
1096
/* Do not publish any local Zeroconf records */
945
1099
config.publish_addresses = 0;
946
1100
config.publish_workstation = 0;
947
1101
config.publish_domain = 0;
948
1102
949
1103
/* Allocate a new server */
950
1104
mc.server = avahi_server_new(avahi_simple_poll_get
951
1105
(mc.simple_poll), &config, NULL,
952
1106
NULL, &error);
953
1107
954
1108
/* Free the Avahi configuration data */
955
1109
avahi_server_config_free(&config);
956
1110
}
957
1111
958
1112
/* Check if creating the Avahi server object succeeded */
959
if (mc.server == NULL) {
1113
if(mc.server == NULL) {
960
1114
fprintf(stderr, "Failed to create Avahi server: %s\n",
961
1115
avahi_strerror(error));
962
1116
exitcode = EXIT_FAILURE;
968
1122
AVAHI_PROTO_INET6,
969
1123
"_mandos._tcp", NULL, 0,
970
1124
browse_callback, &mc);
971
if (sb == NULL) {
1125
if(sb == NULL) {
972
1126
fprintf(stderr, "Failed to create service browser: %s\n",
973
1127
avahi_strerror(avahi_server_errno(mc.server)));
974
1128
exitcode = EXIT_FAILURE;
976
1130
}
977
1131
978
1132
/* Run the main loop */
979
980
if (debug){
1133
1134
if(debug){
981
1135
fprintf(stderr, "Starting Avahi loop search\n");
982
1136
}
983
1137
984
1138
avahi_simple_poll_loop(mc.simple_poll);
985
1139
986
1140
end:
987
988
if (debug){
1141
1142
if(debug){
989
1143
fprintf(stderr, "%s exiting\n", argv[0]);
990
1144
}
991
1145
992
1146
/* Cleanup things */
993
if (sb != NULL)
1147
if(sb != NULL)
994
1148
avahi_s_service_browser_free(sb);
995
1149
996
if (mc.server != NULL)
1150
if(mc.server != NULL)
997
1151
avahi_server_free(mc.server);
998
999
if (mc.simple_poll != NULL)
1152
1153
if(mc.simple_poll != NULL)
1000
1154
avahi_simple_poll_free(mc.simple_poll);
1001
free(pubkeyfile);
1002
free(seckeyfile);
1003
1155
1156
if(gnutls_initalized){
1157
gnutls_certificate_free_credentials(mc.cred);
1158
gnutls_global_deinit();
1159
gnutls_dh_params_deinit(mc.dh_params);
1160
}
1161
1162
if(gpgme_initalized){
1163
gpgme_release(mc.ctx);
1164
}
1165
1166
/* Removes the temp directory used by GPGME */
1167
if(tempdir[0] != '\0'){
1168
DIR *d;
1169
struct dirent *direntry;
1170
d = opendir(tempdir);
1171
if(d == NULL){
1172
if(errno != ENOENT){
1173
perror("opendir");
1174
}
1175
} else {
1176
while(true){
1177
direntry = readdir(d);
1178
if(direntry == NULL){
1179
break;
1180
}
1181
if(direntry->d_type == DT_REG){
1182
char *fullname = NULL;
1183
ret = asprintf(&fullname, "%s/%s", tempdir,
1184
direntry->d_name);
1185
if(ret < 0){
1186
perror("asprintf");
1187
continue;
1188
}
1189
ret = unlink(fullname);
1190
if(ret == -1){
1191
fprintf(stderr, "unlink(\"%s\"): %s",
1192
fullname, strerror(errno));
1193
}
1194
free(fullname);
1195
}
1196
}
1197
closedir(d);
1198
}
1199
ret = rmdir(tempdir);
1200
if(ret == -1 and errno != ENOENT){
1201
perror("rmdir");
1202
}
1203
}
1204
1004
1205
return exitcode;
1005
1206
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0