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- Committer: Björn Påhlsson
- Date: 2008-08-03 20:35:01 UTC
- mto: (24.1.154 mandos) (237.4.3 mandos-release)
- mto: This revision was merged to the branch mainline in revision 41.
- Revision ID: belorn@braxen-20080803203501-av7janz21ve7iq0b
mandosclient
Droping privileges
split gnutls function into global and session
* server.py (if_nametoindex): Redefine itself instead of using a
default keyword argument.
Droping privileges
split gnutls function into global and session
* server.py (if_nametoindex): Redefine itself instead of using a
default keyword argument.
- files added:
- ca.pem
- files removed:
- .bzr-builddeb
- debian
- debian/po
- files renamed:
- plugin-runner.c => plugbasedclient.c
- plugins.d/mandos-client.c => plugins.d/mandosclient.c
- plugins.d/password-prompt.c => plugins.d/passprompt.c
- mandos.conf => server.conf
- mandos => server.py
- files modified:
- Makefile
added
removed
plugins.d/mandosclient.c
1
1
/* -*- coding: utf-8 -*- */
2
2
/*
3
* Mandos-client - get and decrypt data from a Mandos server
3
* Mandos client - get and decrypt data from a Mandos server
4
4
*
5
5
* This program is partly derived from an example program for an Avahi
6
6
* service browser, downloaded from
9
9
* "browse_callback", and parts of "main".
10
10
*
11
11
* Everything else is
12
* Copyright © 2008,2009 Teddy Hogeborn
13
* Copyright © 2008,2009 Björn Påhlsson
12
* Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
14
13
*
15
14
* This program is free software: you can redistribute it and/or
16
15
* modify it under the terms of the GNU General Public License as
33
32
#define _LARGEFILE_SOURCE
34
33
#define _FILE_OFFSET_BITS 64
35
34
36
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
37
36
38
#include <stdio.h> /* fprintf(), stderr, fwrite(),
39
stdout, ferror(), sscanf(),
40
remove() */
41
#include <stdint.h> /* uint16_t, uint32_t */
42
#include <stddef.h> /* NULL, size_t, ssize_t */
43
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
44
srand() */
45
#include <stdbool.h> /* bool, true */
46
#include <string.h> /* memset(), strcmp(), strlen(),
47
strerror(), asprintf(), strcpy() */
48
#include <sys/ioctl.h> /* ioctl */
49
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
50
sockaddr_in6, PF_INET6,
51
SOCK_STREAM, INET6_ADDRSTRLEN,
52
uid_t, gid_t, open(), opendir(),
53
DIR */
54
#include <sys/stat.h> /* open() */
55
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
56
struct in6_addr, inet_pton(),
57
connect() */
58
#include <fcntl.h> /* open() */
59
#include <dirent.h> /* opendir(), struct dirent, readdir()
60
*/
61
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
62
#include <assert.h> /* assert() */
63
#include <errno.h> /* perror(), errno */
64
#include <time.h> /* time() */
37
#include <stdio.h>
38
#include <assert.h>
39
#include <stdlib.h>
40
#include <time.h>
41
#include <net/if.h> /* if_nametoindex */
42
#include <sys/ioctl.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
43
SIOCSIFFLAGS */
65
44
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
66
SIOCSIFFLAGS, if_indextoname(),
67
if_nametoindex(), IF_NAMESIZE */
68
#include <netinet/in.h>
69
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
70
getuid(), getgid(), setuid(),
71
setgid() */
72
#include <arpa/inet.h> /* inet_pton(), htons */
73
#include <iso646.h> /* not, and, or */
74
#include <argp.h> /* struct argp_option, error_t, struct
75
argp_state, struct argp,
76
argp_parse(), ARGP_KEY_ARG,
77
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
45
SIOCSIFFLAGS */
78
46
79
/* Avahi */
80
/* All Avahi types, constants and functions
81
Avahi*, avahi_*,
82
AVAHI_* */
83
47
#include <avahi-core/core.h>
84
48
#include <avahi-core/lookup.h>
85
49
#include <avahi-core/log.h>
87
51
#include <avahi-common/malloc.h>
88
52
#include <avahi-common/error.h>
89
53
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 */
54
/* Mandos client part */
55
#include <sys/types.h> /* socket(), inet_pton() */
56
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
57
struct in6_addr, inet_pton() */
58
#include <gnutls/gnutls.h> /* All GnuTLS stuff */
59
#include <gnutls/openpgp.h> /* GnuTLS with openpgp stuff */
60
61
#include <unistd.h> /* close() */
62
#include <netinet/in.h>
63
#include <stdbool.h> /* true */
64
#include <string.h> /* memset */
65
#include <arpa/inet.h> /* inet_pton() */
66
#include <iso646.h> /* not */
67
#include <net/if.h> /* IF_NAMESIZE */
99
68
100
69
/* GPGME */
101
#include <gpgme.h> /* All GPGME types, constants and
102
functions:
103
gpgme_*
104
GPGME_PROTOCOL_OpenPGP,
105
GPG_ERR_NO_* */
70
#include <errno.h> /* perror() */
71
#include <gpgme.h>
72
73
/* getopt_long */
74
#include <getopt.h>
106
75
107
76
#define BUFFER_SIZE 256
108
77
109
#define PATHDIR "/conf/conf.d/mandos"
110
#define SECKEY "seckey.txt"
111
#define PUBKEY "pubkey.txt"
78
static const char *keydir = "/conf/conf.d/mandos";
79
static const char *pubkeyfile = "pubkey.txt";
80
static const char *seckeyfile = "seckey.txt";
112
81
113
82
bool debug = false;
114
static const char mandos_protocol_version[] = "1";
115
const char *argp_program_version = "mandos-client " VERSION;
116
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
117
118
/* Used for passing in values through the Avahi callback functions */
83
84
const char mandos_protocol_version[] = "1";
85
86
/* Used for passing in values through all the callback functions */
119
87
typedef struct {
120
88
AvahiSimplePoll *simple_poll;
121
89
AvahiServer *server;
123
91
unsigned int dh_bits;
124
92
gnutls_dh_params_t dh_params;
125
93
const char *priority;
126
gpgme_ctx_t ctx;
127
94
} mandos_context;
128
95
129
/*
130
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
131
* "buffer_capacity" is how much is currently allocated,
132
* "buffer_length" is how much is already used.
133
*/
134
96
size_t adjustbuffer(char **buffer, size_t buffer_length,
135
97
size_t buffer_capacity){
136
if(buffer_length + BUFFER_SIZE > buffer_capacity){
98
if (buffer_length + BUFFER_SIZE > buffer_capacity){
137
99
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
138
if(buffer == NULL){
100
if (buffer == NULL){
139
101
return 0;
140
102
}
141
103
buffer_capacity += BUFFER_SIZE;
144
106
}
145
107
146
108
/*
147
* Initialize GPGME.
109
* Decrypt OpenPGP data using keyrings in HOMEDIR.
110
* Returns -1 on error
148
111
*/
149
static bool init_gpgme(mandos_context *mc, const char *seckey,
150
const char *pubkey, const char *tempdir){
151
int ret;
112
static ssize_t pgp_packet_decrypt (const char *cryptotext,
113
size_t crypto_size,
114
char **plaintext,
115
const char *homedir){
116
gpgme_data_t dh_crypto, dh_plain;
117
gpgme_ctx_t ctx;
152
118
gpgme_error_t rc;
119
ssize_t ret;
120
size_t plaintext_capacity = 0;
121
ssize_t plaintext_length = 0;
153
122
gpgme_engine_info_t engine_info;
154
123
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");
124
if (debug){
125
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
193
126
}
194
127
195
128
/* Init GPGME */
196
129
gpgme_check_version(NULL);
197
130
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
198
if(rc != GPG_ERR_NO_ERROR){
131
if (rc != GPG_ERR_NO_ERROR){
199
132
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
200
133
gpgme_strsource(rc), gpgme_strerror(rc));
201
return false;
134
return -1;
202
135
}
203
136
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){
137
/* Set GPGME home directory for the OpenPGP engine only */
138
rc = gpgme_get_engine_info (&engine_info);
139
if (rc != GPG_ERR_NO_ERROR){
207
140
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
208
141
gpgme_strsource(rc), gpgme_strerror(rc));
209
return false;
142
return -1;
210
143
}
211
144
while(engine_info != NULL){
212
145
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
213
146
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
214
engine_info->file_name, tempdir);
147
engine_info->file_name, homedir);
215
148
break;
216
149
}
217
150
engine_info = engine_info->next;
218
151
}
219
152
if(engine_info == NULL){
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");
153
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
154
return -1;
255
155
}
256
156
257
157
/* Create new GPGME data buffer from memory cryptotext */
258
158
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
259
159
0);
260
if(rc != GPG_ERR_NO_ERROR){
160
if (rc != GPG_ERR_NO_ERROR){
261
161
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
262
162
gpgme_strsource(rc), gpgme_strerror(rc));
263
163
return -1;
265
165
266
166
/* Create new empty GPGME data buffer for the plaintext */
267
167
rc = gpgme_data_new(&dh_plain);
268
if(rc != GPG_ERR_NO_ERROR){
168
if (rc != GPG_ERR_NO_ERROR){
269
169
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
270
170
gpgme_strsource(rc), gpgme_strerror(rc));
271
171
gpgme_data_release(dh_crypto);
272
172
return -1;
273
173
}
274
174
175
/* Create new GPGME "context" */
176
rc = gpgme_new(&ctx);
177
if (rc != GPG_ERR_NO_ERROR){
178
fprintf(stderr, "bad gpgme_new: %s: %s\n",
179
gpgme_strsource(rc), gpgme_strerror(rc));
180
plaintext_length = -1;
181
goto decrypt_end;
182
}
183
275
184
/* Decrypt data from the cryptotext data buffer to the plaintext
276
185
data buffer */
277
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
278
if(rc != GPG_ERR_NO_ERROR){
186
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
187
if (rc != GPG_ERR_NO_ERROR){
279
188
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
280
189
gpgme_strsource(rc), gpgme_strerror(rc));
281
190
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
}
310
191
goto decrypt_end;
311
192
}
312
193
314
195
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
315
196
}
316
197
198
if (debug){
199
gpgme_decrypt_result_t result;
200
result = gpgme_op_decrypt_result(ctx);
201
if (result == NULL){
202
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
203
} else {
204
fprintf(stderr, "Unsupported algorithm: %s\n",
205
result->unsupported_algorithm);
206
fprintf(stderr, "Wrong key usage: %d\n",
207
result->wrong_key_usage);
208
if(result->file_name != NULL){
209
fprintf(stderr, "File name: %s\n", result->file_name);
210
}
211
gpgme_recipient_t recipient;
212
recipient = result->recipients;
213
if(recipient){
214
while(recipient != NULL){
215
fprintf(stderr, "Public key algorithm: %s\n",
216
gpgme_pubkey_algo_name(recipient->pubkey_algo));
217
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
218
fprintf(stderr, "Secret key available: %s\n",
219
recipient->status == GPG_ERR_NO_SECKEY
220
? "No" : "Yes");
221
recipient = recipient->next;
222
}
223
}
224
}
225
}
226
317
227
/* Seek back to the beginning of the GPGME plaintext data buffer */
318
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
319
perror("gpgme_data_seek");
228
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
229
perror("pgpme_data_seek");
320
230
plaintext_length = -1;
321
231
goto decrypt_end;
322
232
}
323
233
324
234
*plaintext = NULL;
325
235
while(true){
326
plaintext_capacity = adjustbuffer(plaintext,
327
(size_t)plaintext_length,
236
plaintext_capacity = adjustbuffer(plaintext, (size_t)plaintext_length,
328
237
plaintext_capacity);
329
if(plaintext_capacity == 0){
238
if (plaintext_capacity == 0){
330
239
perror("adjustbuffer");
331
240
plaintext_length = -1;
332
241
goto decrypt_end;
335
244
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
336
245
BUFFER_SIZE);
337
246
/* Print the data, if any */
338
if(ret == 0){
247
if (ret == 0){
339
248
/* EOF */
340
249
break;
341
250
}
346
255
}
347
256
plaintext_length += ret;
348
257
}
349
258
350
259
if(debug){
351
260
fprintf(stderr, "Decrypted password is: ");
352
261
for(ssize_t i = 0; i < plaintext_length; i++){
365
274
return plaintext_length;
366
275
}
367
276
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)
277
static const char * safer_gnutls_strerror (int value) {
278
const char *ret = gnutls_strerror (value);
279
if (ret == NULL)
372
280
ret = "(unknown)";
373
281
return ret;
374
282
}
379
287
fprintf(stderr, "GnuTLS: %s", string);
380
288
}
381
289
382
static int init_gnutls_global(mandos_context *mc,
383
const char *pubkeyfilename,
384
const char *seckeyfilename){
290
static int init_gnutls_global(mandos_context *mc){
385
291
int ret;
386
292
387
293
if(debug){
388
294
fprintf(stderr, "Initializing GnuTLS\n");
389
295
}
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));
296
297
if ((ret = gnutls_global_init ())
298
!= GNUTLS_E_SUCCESS) {
299
fprintf (stderr, "GnuTLS global_init: %s\n",
300
safer_gnutls_strerror(ret));
395
301
return -1;
396
302
}
397
303
398
if(debug){
304
if (debug){
399
305
/* "Use a log level over 10 to enable all debugging options."
400
306
* - GnuTLS manual
401
307
*/
404
310
}
405
311
406
312
/* OpenPGP credentials */
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();
313
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
314
!= GNUTLS_E_SUCCESS) {
315
fprintf (stderr, "GnuTLS memory error: %s\n",
316
safer_gnutls_strerror(ret));
415
317
return -1;
416
318
}
417
319
418
320
if(debug){
419
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
420
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
421
seckeyfilename);
321
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
322
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
323
seckeyfile);
422
324
}
423
325
424
326
ret = gnutls_certificate_set_openpgp_key_file
425
(mc->cred, pubkeyfilename, seckeyfilename,
426
GNUTLS_OPENPGP_FMT_BASE64);
427
if(ret != GNUTLS_E_SUCCESS) {
327
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
328
if (ret != GNUTLS_E_SUCCESS) {
428
329
fprintf(stderr,
429
330
"Error[%d] while reading the OpenPGP key pair ('%s',"
430
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
431
fprintf(stderr, "The GnuTLS error is: %s\n",
331
" '%s')\n", ret, pubkeyfile, seckeyfile);
332
fprintf(stdout, "The GnuTLS error is: %s\n",
432
333
safer_gnutls_strerror(ret));
433
goto globalfail;
334
return -1;
434
335
}
435
336
436
337
/* GnuTLS server initialization */
437
338
ret = gnutls_dh_params_init(&mc->dh_params);
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;
339
if (ret != GNUTLS_E_SUCCESS) {
340
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
341
" %s\n", safer_gnutls_strerror(ret));
342
return -1;
442
343
}
443
344
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
444
if(ret != GNUTLS_E_SUCCESS) {
445
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
446
safer_gnutls_strerror(ret));
447
goto globalfail;
345
if (ret != GNUTLS_E_SUCCESS) {
346
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
347
safer_gnutls_strerror(ret));
348
return -1;
448
349
}
449
350
450
351
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
451
352
452
353
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;
460
354
}
461
355
462
static int init_gnutls_session(mandos_context *mc,
463
gnutls_session_t *session){
356
static int init_gnutls_session(mandos_context *mc, gnutls_session_t *session){
464
357
int ret;
465
358
/* GnuTLS session creation */
466
359
ret = gnutls_init(session, GNUTLS_SERVER);
467
if(ret != GNUTLS_E_SUCCESS){
360
if (ret != GNUTLS_E_SUCCESS){
468
361
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
469
362
safer_gnutls_strerror(ret));
470
363
}
472
365
{
473
366
const char *err;
474
367
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
475
if(ret != GNUTLS_E_SUCCESS) {
368
if (ret != GNUTLS_E_SUCCESS) {
476
369
fprintf(stderr, "Syntax error at: %s\n", err);
477
370
fprintf(stderr, "GnuTLS error: %s\n",
478
371
safer_gnutls_strerror(ret));
479
gnutls_deinit(*session);
480
372
return -1;
481
373
}
482
374
}
483
375
484
376
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
485
377
mc->cred);
486
if(ret != GNUTLS_E_SUCCESS) {
378
if (ret != GNUTLS_E_SUCCESS) {
487
379
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
488
380
safer_gnutls_strerror(ret));
489
gnutls_deinit(*session);
490
381
return -1;
491
382
}
492
383
493
384
/* ignore client certificate if any. */
494
gnutls_certificate_server_set_request(*session,
495
GNUTLS_CERT_IGNORE);
385
gnutls_certificate_server_set_request (*session,
386
GNUTLS_CERT_IGNORE);
496
387
497
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
388
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
498
389
499
390
return 0;
500
391
}
508
399
AvahiIfIndex if_index,
509
400
mandos_context *mc){
510
401
int ret, tcp_sd;
511
ssize_t sret;
512
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
402
struct sockaddr_in6 to;
513
403
char *buffer = NULL;
514
404
char *decrypted_buffer;
515
405
size_t buffer_length = 0;
519
409
int retval = 0;
520
410
char interface[IF_NAMESIZE];
521
411
gnutls_session_t session;
412
gnutls_dh_params_t dh_params;
522
413
523
ret = init_gnutls_session(mc, &session);
524
if(ret != 0){
414
ret = init_gnutls_session (mc, &session);
415
if (ret != 0){
525
416
return -1;
526
417
}
527
418
528
419
if(debug){
529
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
530
"\n", ip, port);
420
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
421
ip, port);
531
422
}
532
423
533
424
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
535
426
perror("socket");
536
427
return -1;
537
428
}
538
429
539
430
if(debug){
540
431
if(if_indextoname((unsigned int)if_index, interface) == NULL){
541
432
perror("if_indextoname");
544
435
fprintf(stderr, "Binding to interface %s\n", interface);
545
436
}
546
437
547
memset(&to, 0, sizeof(to));
548
to.in6.sin6_family = AF_INET6;
438
memset(&to,0,sizeof(to)); /* Spurious warning */
439
to.sin6_family = AF_INET6;
549
440
/* It would be nice to have a way to detect if we were passed an
550
441
IPv4 address here. Now we assume an IPv6 address. */
551
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
552
if(ret < 0 ){
442
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
443
if (ret < 0 ){
553
444
perror("inet_pton");
554
445
return -1;
555
446
}
557
448
fprintf(stderr, "Bad address: %s\n", ip);
558
449
return -1;
559
450
}
560
to.in6.sin6_port = htons(port); /* Spurious warnings from
561
-Wconversion and
562
-Wunreachable-code */
451
to.sin6_port = htons(port); /* Spurious warning */
563
452
564
to.in6.sin6_scope_id = (uint32_t)if_index;
453
to.sin6_scope_id = (uint32_t)if_index;
565
454
566
455
if(debug){
567
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
568
port);
456
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
569
457
char addrstr[INET6_ADDRSTRLEN] = "";
570
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
458
if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr,
571
459
sizeof(addrstr)) == NULL){
572
460
perror("inet_ntop");
573
461
} else {
577
465
}
578
466
}
579
467
580
ret = connect(tcp_sd, &to.in, sizeof(to));
581
if(ret < 0){
468
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
469
if (ret < 0){
582
470
perror("connect");
583
471
return -1;
584
472
}
585
473
586
474
const char *out = mandos_protocol_version;
587
475
written = 0;
588
while(true){
476
while (true){
589
477
size_t out_size = strlen(out);
590
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
478
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
591
479
out_size - written));
592
if(ret == -1){
480
if (ret == -1){
593
481
perror("write");
594
482
retval = -1;
595
483
goto mandos_end;
598
486
if(written < out_size){
599
487
continue;
600
488
} else {
601
if(out == mandos_protocol_version){
489
if (out == mandos_protocol_version){
602
490
written = 0;
603
491
out = "\r\n";
604
492
} else {
606
494
}
607
495
}
608
496
}
609
497
610
498
if(debug){
611
499
fprintf(stderr, "Establishing TLS session with %s\n", ip);
612
500
}
613
501
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){
502
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
503
504
ret = gnutls_handshake (session);
505
506
if (ret != GNUTLS_E_SUCCESS){
621
507
if(debug){
622
508
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
623
gnutls_perror(ret);
509
gnutls_perror (ret);
624
510
}
625
511
retval = -1;
626
512
goto mandos_end;
632
518
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
633
519
ip);
634
520
}
635
521
636
522
while(true){
637
buffer_capacity = adjustbuffer(&buffer, buffer_length,
638
buffer_capacity);
639
if(buffer_capacity == 0){
523
buffer_capacity = adjustbuffer(&buffer, buffer_length, buffer_capacity);
524
if (buffer_capacity == 0){
640
525
perror("adjustbuffer");
641
526
retval = -1;
642
527
goto mandos_end;
643
528
}
644
529
645
sret = gnutls_record_recv(session, buffer+buffer_length,
646
BUFFER_SIZE);
647
if(sret == 0){
530
ret = gnutls_record_recv(session, buffer+buffer_length,
531
BUFFER_SIZE);
532
if (ret == 0){
648
533
break;
649
534
}
650
if(sret < 0){
651
switch(sret){
535
if (ret < 0){
536
switch(ret){
652
537
case GNUTLS_E_INTERRUPTED:
653
538
case GNUTLS_E_AGAIN:
654
539
break;
655
540
case GNUTLS_E_REHANDSHAKE:
656
do{
657
ret = gnutls_handshake(session);
658
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
659
if(ret < 0){
541
ret = gnutls_handshake (session);
542
if (ret < 0){
660
543
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
661
gnutls_perror(ret);
544
gnutls_perror (ret);
662
545
retval = -1;
663
546
goto mandos_end;
664
547
}
667
550
fprintf(stderr, "Unknown error while reading data from"
668
551
" encrypted session with Mandos server\n");
669
552
retval = -1;
670
gnutls_bye(session, GNUTLS_SHUT_RDWR);
553
gnutls_bye (session, GNUTLS_SHUT_RDWR);
671
554
goto mandos_end;
672
555
}
673
556
} else {
674
buffer_length += (size_t) sret;
557
buffer_length += (size_t) ret;
675
558
}
676
559
}
677
560
679
562
fprintf(stderr, "Closing TLS session\n");
680
563
}
681
564
682
gnutls_bye(session, GNUTLS_SHUT_RDWR);
565
gnutls_bye (session, GNUTLS_SHUT_RDWR);
683
566
684
if(buffer_length > 0){
685
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
567
if (buffer_length > 0){
568
decrypted_buffer_size = pgp_packet_decrypt(buffer,
686
569
buffer_length,
687
&decrypted_buffer);
688
if(decrypted_buffer_size >= 0){
570
&decrypted_buffer,
571
keydir);
572
if (decrypted_buffer_size >= 0){
689
573
written = 0;
690
574
while(written < (size_t) decrypted_buffer_size){
691
ret = (int)fwrite(decrypted_buffer + written, 1,
692
(size_t)decrypted_buffer_size - written,
693
stdout);
575
ret = (int)fwrite (decrypted_buffer + written, 1,
576
(size_t)decrypted_buffer_size - written,
577
stdout);
694
578
if(ret == 0 and ferror(stdout)){
695
579
if(debug){
696
580
fprintf(stderr, "Error writing encrypted data: %s\n",
705
589
} else {
706
590
retval = -1;
707
591
}
708
} else {
709
retval = -1;
710
592
}
711
593
712
594
/* Shutdown procedure */
713
595
714
596
mandos_end:
715
597
free(buffer);
716
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
717
if(ret == -1){
718
perror("close");
719
}
720
gnutls_deinit(session);
598
close(tcp_sd);
599
gnutls_deinit (session);
600
gnutls_certificate_free_credentials (mc->cred);
601
gnutls_global_deinit ();
721
602
return retval;
722
603
}
723
604
736
617
flags,
737
618
void* userdata) {
738
619
mandos_context *mc = userdata;
739
assert(r);
620
assert(r); /* Spurious warning */
740
621
741
622
/* Called whenever a service has been resolved successfully or
742
623
timed out */
743
624
744
switch(event) {
625
switch (event) {
745
626
default:
746
627
case AVAHI_RESOLVER_FAILURE:
747
628
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
754
635
char ip[AVAHI_ADDRESS_STR_MAX];
755
636
avahi_address_snprint(ip, sizeof(ip), address);
756
637
if(debug){
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);
638
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
639
" port %d\n", name, host_name, ip, interface, port);
760
640
}
761
641
int ret = start_mandos_communication(ip, port, interface, mc);
762
if(ret == 0){
763
avahi_simple_poll_quit(mc->simple_poll);
642
if (ret == 0){
643
exit(EXIT_SUCCESS);
764
644
}
765
645
}
766
646
}
778
658
flags,
779
659
void* userdata) {
780
660
mandos_context *mc = userdata;
781
assert(b);
661
assert(b); /* Spurious warning */
782
662
783
663
/* Called whenever a new services becomes available on the LAN or
784
664
is removed from the LAN */
785
665
786
switch(event) {
666
switch (event) {
787
667
default:
788
668
case AVAHI_BROWSER_FAILURE:
789
669
798
678
the callback function is called the Avahi server will free the
799
679
resolver for us. */
800
680
801
if(!(avahi_s_service_resolver_new(mc->server, interface,
681
if (!(avahi_s_service_resolver_new(mc->server, interface,
802
682
protocol, name, type, domain,
803
683
AVAHI_PROTO_INET6, 0,
804
684
resolve_callback, mc)))
818
698
}
819
699
}
820
700
701
/* Combines file name and path and returns the malloced new
702
string. some sane checks could/should be added */
703
static const char *combinepath(const char *first, const char *second){
704
size_t f_len = strlen(first);
705
size_t s_len = strlen(second);
706
char *tmp = malloc(f_len + s_len + 2);
707
if (tmp == NULL){
708
return NULL;
709
}
710
if(f_len > 0){
711
memcpy(tmp, first, f_len); /* Spurious warning */
712
}
713
tmp[f_len] = '/';
714
if(s_len > 0){
715
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
716
}
717
tmp[f_len + 1 + s_len] = '\0';
718
return tmp;
719
}
720
721
821
722
int main(int argc, char *argv[]){
822
723
AvahiSServiceBrowser *sb = NULL;
823
724
int error;
824
725
int ret;
825
intmax_t tmpmax;
826
int numchars;
827
726
int exitcode = EXIT_SUCCESS;
828
727
const char *interface = "eth0";
829
728
struct ifreq network;
831
730
uid_t uid;
832
731
gid_t gid;
833
732
char *connect_to = NULL;
834
char tempdir[] = "/tmp/mandosXXXXXX";
835
733
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
836
const char *seckey = PATHDIR "/" SECKEY;
837
const char *pubkey = PATHDIR "/" PUBKEY;
838
839
734
mandos_context mc = { .simple_poll = NULL, .server = NULL,
840
.dh_bits = 1024, .priority = "SECURE256"
841
":!CTYPE-X.509:+CTYPE-OPENPGP" };
842
bool gnutls_initialized = false;
843
bool gpgme_initialized = false;
735
.dh_bits = 1024, .priority = "SECURE256"};
844
736
845
737
{
846
struct argp_option options[] = {
847
{ .name = "debug", .key = 128,
848
.doc = "Debug mode", .group = 3 },
849
{ .name = "connect", .key = 'c',
850
.arg = "ADDRESS:PORT",
851
.doc = "Connect directly to a specific Mandos server",
852
.group = 1 },
853
{ .name = "interface", .key = 'i',
854
.arg = "NAME",
855
.doc = "Interface that will be used to search for Mandos"
856
" servers",
857
.group = 1 },
858
{ .name = "seckey", .key = 's',
859
.arg = "FILE",
860
.doc = "OpenPGP secret key file base name",
861
.group = 1 },
862
{ .name = "pubkey", .key = 'p',
863
.arg = "FILE",
864
.doc = "OpenPGP public key file base name",
865
.group = 2 },
866
{ .name = "dh-bits", .key = 129,
867
.arg = "BITS",
868
.doc = "Bit length of the prime number used in the"
869
" Diffie-Hellman key exchange",
870
.group = 2 },
871
{ .name = "priority", .key = 130,
872
.arg = "STRING",
873
.doc = "GnuTLS priority string for the TLS handshake",
874
.group = 1 },
875
{ .name = NULL }
876
};
877
878
error_t parse_opt(int key, char *arg,
879
struct argp_state *state) {
880
switch(key) {
881
case 128: /* --debug */
882
debug = true;
883
break;
884
case 'c': /* --connect */
885
connect_to = arg;
886
break;
887
case 'i': /* --interface */
888
interface = arg;
889
break;
890
case 's': /* --seckey */
891
seckey = arg;
892
break;
893
case 'p': /* --pubkey */
894
pubkey = arg;
895
break;
896
case 129: /* --dh-bits */
897
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
898
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
899
or arg[numchars] != '\0'){
900
fprintf(stderr, "Bad number of DH bits\n");
738
/* Temporary int to get the address of for getopt_long */
739
int debug_int = debug ? 1 : 0;
740
while (true){
741
struct option long_options[] = {
742
{"debug", no_argument, &debug_int, 1},
743
{"connect", required_argument, NULL, 'c'},
744
{"interface", required_argument, NULL, 'i'},
745
{"keydir", required_argument, NULL, 'd'},
746
{"seckey", required_argument, NULL, 's'},
747
{"pubkey", required_argument, NULL, 'p'},
748
{"dh-bits", required_argument, NULL, 'D'},
749
{"priority", required_argument, NULL, 'P'},
750
{0, 0, 0, 0} };
751
752
int option_index = 0;
753
ret = getopt_long (argc, argv, "i:", long_options,
754
&option_index);
755
756
if (ret == -1){
757
break;
758
}
759
760
switch(ret){
761
case 0:
762
break;
763
case 'i':
764
interface = optarg;
765
break;
766
case 'c':
767
connect_to = optarg;
768
break;
769
case 'd':
770
keydir = optarg;
771
break;
772
case 'p':
773
pubkeyfile = optarg;
774
break;
775
case 's':
776
seckeyfile = optarg;
777
break;
778
case 'D':
779
errno = 0;
780
mc.dh_bits = (unsigned int) strtol(optarg, NULL, 10);
781
if (errno){
782
perror("strtol");
901
783
exit(EXIT_FAILURE);
902
784
}
903
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
904
break;
905
case 130: /* --priority */
906
mc.priority = arg;
907
break;
908
case ARGP_KEY_ARG:
909
argp_usage(state);
910
case ARGP_KEY_END:
911
break;
785
break;
786
case 'P':
787
mc.priority = optarg;
788
break;
789
case '?':
912
790
default:
913
return ARGP_ERR_UNKNOWN;
914
}
915
return 0;
916
}
917
918
struct argp argp = { .options = options, .parser = parse_opt,
919
.args_doc = "",
920
.doc = "Mandos client -- Get and decrypt"
921
" passwords from a Mandos server" };
922
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
923
if(ret == ARGP_ERR_UNKNOWN){
924
fprintf(stderr, "Unknown error while parsing arguments\n");
925
exitcode = EXIT_FAILURE;
926
goto end;
927
}
928
}
929
930
/* If the interface is down, bring it up */
931
{
932
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
933
if(sd < 0) {
934
perror("socket");
935
exitcode = EXIT_FAILURE;
936
goto end;
937
}
938
strcpy(network.ifr_name, interface);
939
ret = ioctl(sd, SIOCGIFFLAGS, &network);
940
if(ret == -1){
941
perror("ioctl SIOCGIFFLAGS");
942
exitcode = EXIT_FAILURE;
943
goto end;
944
}
945
if((network.ifr_flags & IFF_UP) == 0){
946
network.ifr_flags |= IFF_UP;
947
ret = ioctl(sd, SIOCSIFFLAGS, &network);
948
if(ret == -1){
949
perror("ioctl SIOCSIFFLAGS");
950
exitcode = EXIT_FAILURE;
951
goto end;
952
}
953
}
954
ret = (int)TEMP_FAILURE_RETRY(close(sd));
955
if(ret == -1){
956
perror("close");
957
}
958
}
959
791
/* getopt_long() has already printed a message about the
792
unrcognized option, so just exit. */
793
exit(EXIT_FAILURE);
794
}
795
}
796
/* Set the global debug flag from the temporary int */
797
debug = debug_int ? true : false;
798
}
799
800
pubkeyfile = combinepath(keydir, pubkeyfile);
801
if (pubkeyfile == NULL){
802
perror("combinepath");
803
exitcode = EXIT_FAILURE;
804
goto end;
805
}
806
807
seckeyfile = combinepath(keydir, seckeyfile);
808
if (seckeyfile == NULL){
809
perror("combinepath");
810
goto end;
811
}
812
813
ret = init_gnutls_global(&mc);
814
if (ret == -1){
815
fprintf(stderr, "init_gnutls_global\n");
816
goto end;
817
}
818
960
819
uid = getuid();
961
820
gid = getgid();
962
821
963
822
ret = setuid(uid);
964
if(ret == -1){
823
if (ret == -1){
965
824
perror("setuid");
966
825
}
967
826
968
827
setgid(gid);
969
if(ret == -1){
828
if (ret == -1){
970
829
perror("setgid");
971
830
}
972
831
973
ret = init_gnutls_global(&mc, pubkey, seckey);
974
if(ret == -1){
975
fprintf(stderr, "init_gnutls_global failed\n");
976
exitcode = EXIT_FAILURE;
977
goto end;
978
} else {
979
gnutls_initialized = true;
980
}
981
982
if(mkdtemp(tempdir) == NULL){
983
perror("mkdtemp");
984
tempdir[0] = '\0';
985
goto end;
986
}
987
988
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
989
fprintf(stderr, "init_gpgme failed\n");
990
exitcode = EXIT_FAILURE;
991
goto end;
992
} else {
993
gpgme_initialized = true;
994
}
995
996
832
if_index = (AvahiIfIndex) if_nametoindex(interface);
997
833
if(if_index == 0){
998
834
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1008
844
exitcode = EXIT_FAILURE;
1009
845
goto end;
1010
846
}
1011
uint16_t port;
1012
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1013
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1014
or address[numchars+1] != '\0'){
1015
fprintf(stderr, "Bad port number\n");
847
errno = 0;
848
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
849
if(errno){
850
perror("Bad port number");
1016
851
exitcode = EXIT_FAILURE;
1017
852
goto end;
1018
853
}
1019
port = (uint16_t)tmpmax;
1020
854
*address = '\0';
1021
855
address = connect_to;
1022
856
ret = start_mandos_communication(address, port, if_index, &mc);
1028
862
goto end;
1029
863
}
1030
864
1031
if(not debug){
865
/* If the interface is down, bring it up */
866
{
867
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
868
if(sd < 0) {
869
perror("socket");
870
exitcode = EXIT_FAILURE;
871
goto end;
872
}
873
strcpy(network.ifr_name, interface); /* Spurious warning */
874
ret = ioctl(sd, SIOCGIFFLAGS, &network);
875
if(ret == -1){
876
perror("ioctl SIOCGIFFLAGS");
877
exitcode = EXIT_FAILURE;
878
goto end;
879
}
880
if((network.ifr_flags & IFF_UP) == 0){
881
network.ifr_flags |= IFF_UP;
882
ret = ioctl(sd, SIOCSIFFLAGS, &network);
883
if(ret == -1){
884
perror("ioctl SIOCSIFFLAGS");
885
exitcode = EXIT_FAILURE;
886
goto end;
887
}
888
}
889
close(sd);
890
}
891
892
if (not debug){
1032
893
avahi_set_log_function(empty_log);
1033
894
}
1034
895
1037
898
1038
899
/* Allocate main Avahi loop object */
1039
900
mc.simple_poll = avahi_simple_poll_new();
1040
if(mc.simple_poll == NULL) {
901
if (mc.simple_poll == NULL) {
1041
902
fprintf(stderr, "Avahi: Failed to create simple poll"
1042
903
" object.\n");
1043
904
exitcode = EXIT_FAILURE;
1044
905
goto end;
1045
906
}
1046
907
1047
908
{
1048
909
AvahiServerConfig config;
1049
910
/* Do not publish any local Zeroconf records */
1052
913
config.publish_addresses = 0;
1053
914
config.publish_workstation = 0;
1054
915
config.publish_domain = 0;
1055
916
1056
917
/* Allocate a new server */
1057
918
mc.server = avahi_server_new(avahi_simple_poll_get
1058
919
(mc.simple_poll), &config, NULL,
1059
920
NULL, &error);
1060
921
1061
922
/* Free the Avahi configuration data */
1062
923
avahi_server_config_free(&config);
1063
924
}
1064
925
1065
926
/* Check if creating the Avahi server object succeeded */
1066
if(mc.server == NULL) {
927
if (mc.server == NULL) {
1067
928
fprintf(stderr, "Failed to create Avahi server: %s\n",
1068
929
avahi_strerror(error));
1069
930
exitcode = EXIT_FAILURE;
1075
936
AVAHI_PROTO_INET6,
1076
937
"_mandos._tcp", NULL, 0,
1077
938
browse_callback, &mc);
1078
if(sb == NULL) {
939
if (sb == NULL) {
1079
940
fprintf(stderr, "Failed to create service browser: %s\n",
1080
941
avahi_strerror(avahi_server_errno(mc.server)));
1081
942
exitcode = EXIT_FAILURE;
1083
944
}
1084
945
1085
946
/* Run the main loop */
1086
1087
if(debug){
947
948
if (debug){
1088
949
fprintf(stderr, "Starting Avahi loop search\n");
1089
950
}
1090
951
1091
952
avahi_simple_poll_loop(mc.simple_poll);
1092
953
1093
954
end:
1094
1095
if(debug){
955
956
if (debug){
1096
957
fprintf(stderr, "%s exiting\n", argv[0]);
1097
958
}
1098
959
1099
960
/* Cleanup things */
1100
if(sb != NULL)
961
if (sb != NULL)
1101
962
avahi_s_service_browser_free(sb);
1102
963
1103
if(mc.server != NULL)
964
if (mc.server != NULL)
1104
965
avahi_server_free(mc.server);
1105
1106
if(mc.simple_poll != NULL)
966
967
if (mc.simple_poll != NULL)
1107
968
avahi_simple_poll_free(mc.simple_poll);
1108
1109
if(gnutls_initialized){
1110
gnutls_certificate_free_credentials(mc.cred);
1111
gnutls_global_deinit();
1112
gnutls_dh_params_deinit(mc.dh_params);
1113
}
1114
1115
if(gpgme_initialized){
1116
gpgme_release(mc.ctx);
1117
}
1118
1119
/* Removes the temp directory used by GPGME */
1120
if(tempdir[0] != '\0'){
1121
DIR *d;
1122
struct dirent *direntry;
1123
d = opendir(tempdir);
1124
if(d == NULL){
1125
if(errno != ENOENT){
1126
perror("opendir");
1127
}
1128
} else {
1129
while(true){
1130
direntry = readdir(d);
1131
if(direntry == NULL){
1132
break;
1133
}
1134
/* Skip "." and ".." */
1135
if(direntry->d_name[0] == '.'
1136
and (direntry->d_name[1] == '\0'
1137
or (direntry->d_name[1] == '.'
1138
and direntry->d_name[2] == '\0'))){
1139
continue;
1140
}
1141
char *fullname = NULL;
1142
ret = asprintf(&fullname, "%s/%s", tempdir,
1143
direntry->d_name);
1144
if(ret < 0){
1145
perror("asprintf");
1146
continue;
1147
}
1148
ret = remove(fullname);
1149
if(ret == -1){
1150
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1151
strerror(errno));
1152
}
1153
free(fullname);
1154
}
1155
closedir(d);
1156
}
1157
ret = rmdir(tempdir);
1158
if(ret == -1 and errno != ENOENT){
1159
perror("rmdir");
1160
}
1161
}
969
free(pubkeyfile);
970
free(seckeyfile);
1162
971
1163
972
return exitcode;
1164
973
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0