To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to plugins.d/mandosclient.c
- browse files at revision 39
- compare with another revision
- download diff
- download tarball
- view history from revision 39
- Committer: Teddy Hogeborn
- Date: 2008-08-03 03:33:56 UTC
- Revision ID: teddy@fukt.bsnet.se-20080803033356-6aemgj0g0hoz91ow
* plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.
On debug, show
decrypted plaintext
in hexadecimal. Free
the GPGME data
buffers even on
errors.
On debug, show
decrypted plaintext
in hexadecimal. Free
the GPGME data
buffers even on
errors.
- 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
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() */
37
38
#include <stdio.h> /* fprintf(), stderr, fwrite(),
39
stdout, ferror() */
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(), DIR */
52
#include <sys/stat.h> /* open() */
53
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
54
struct in6_addr, inet_pton(),
55
connect() */
56
#include <fcntl.h> /* open() */
57
#include <dirent.h> /* opendir(), struct dirent, readdir() */
58
#include <inttypes.h> /* PRIu16 */
59
#include <assert.h> /* assert() */
60
#include <errno.h> /* perror(), errno */
61
#include <time.h> /* time() */
35
#include <stdio.h>
36
#include <assert.h>
37
#include <stdlib.h>
38
#include <time.h>
39
#include <net/if.h> /* if_nametoindex */
40
#include <sys/ioctl.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
41
SIOCSIFFLAGS */
62
42
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
63
SIOCSIFFLAGS, if_indextoname(),
64
if_nametoindex(), IF_NAMESIZE */
65
#include <netinet/in.h>
66
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
67
getuid(), getgid(), setuid(),
68
setgid() */
69
#include <arpa/inet.h> /* inet_pton(), htons */
70
#include <iso646.h> /* not, and */
71
#include <argp.h> /* struct argp_option, error_t, struct
72
argp_state, struct argp,
73
argp_parse(), ARGP_KEY_ARG,
74
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
43
SIOCSIFFLAGS */
75
44
76
/* Avahi */
77
/* All Avahi types, constants and functions
78
Avahi*, avahi_*,
79
AVAHI_* */
80
45
#include <avahi-core/core.h>
81
46
#include <avahi-core/lookup.h>
82
47
#include <avahi-core/log.h>
84
49
#include <avahi-common/malloc.h>
85
50
#include <avahi-common/error.h>
86
51
87
/* GnuTLS */
88
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
89
functions:
90
gnutls_*
91
init_gnutls_session(),
92
GNUTLS_* */
93
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
94
GNUTLS_OPENPGP_FMT_BASE64 */
95
96
/* GPGME */
97
#include <gpgme.h> /* All GPGME types, constants and
98
functions:
99
gpgme_*
100
GPGME_PROTOCOL_OpenPGP,
101
GPG_ERR_NO_* */
52
//mandos client part
53
#include <sys/types.h> /* socket(), inet_pton() */
54
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
55
struct in6_addr, inet_pton() */
56
#include <gnutls/gnutls.h> /* All GnuTLS stuff */
57
#include <gnutls/openpgp.h> /* GnuTLS with openpgp stuff */
58
59
#include <unistd.h> /* close() */
60
#include <netinet/in.h>
61
#include <stdbool.h> /* true */
62
#include <string.h> /* memset */
63
#include <arpa/inet.h> /* inet_pton() */
64
#include <iso646.h> /* not */
65
66
// gpgme
67
#include <errno.h> /* perror() */
68
#include <gpgme.h>
69
70
// getopt_long
71
#include <getopt.h>
102
72
103
73
#define BUFFER_SIZE 256
104
74
105
#define PATHDIR "/conf/conf.d/mandos"
106
#define SECKEY "seckey.txt"
107
#define PUBKEY "pubkey.txt"
75
static const char *keydir = "/conf/conf.d/mandos";
76
static const char *pubkeyfile = "pubkey.txt";
77
static const char *seckeyfile = "seckey.txt";
108
78
109
79
bool debug = false;
110
static const char mandos_protocol_version[] = "1";
111
const char *argp_program_version = "mandos-client " VERSION;
112
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
113
80
114
/* Used for passing in values through the Avahi callback functions */
81
/* Used for passing in values through all the callback functions */
115
82
typedef struct {
116
83
AvahiSimplePoll *simple_poll;
117
84
AvahiServer *server;
118
85
gnutls_certificate_credentials_t cred;
119
86
unsigned int dh_bits;
120
gnutls_dh_params_t dh_params;
121
87
const char *priority;
88
} mandos_context;
89
90
/*
91
* Decrypt OpenPGP data using keyrings in HOMEDIR.
92
* Returns -1 on error
93
*/
94
static ssize_t pgp_packet_decrypt (const char *cryptotext,
95
size_t crypto_size,
96
char **plaintext,
97
const char *homedir){
98
gpgme_data_t dh_crypto, dh_plain;
122
99
gpgme_ctx_t ctx;
123
} mandos_context;
124
125
/*
126
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
127
* "buffer_capacity" is how much is currently allocated,
128
* "buffer_length" is how much is already used.
129
*/
130
size_t adjustbuffer(char **buffer, size_t buffer_length,
131
size_t buffer_capacity){
132
if (buffer_length + BUFFER_SIZE > buffer_capacity){
133
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
134
if (buffer == NULL){
135
return 0;
136
}
137
buffer_capacity += BUFFER_SIZE;
138
}
139
return buffer_capacity;
140
}
141
142
/*
143
* Initialize GPGME.
144
*/
145
static bool init_gpgme(mandos_context *mc, const char *seckey,
146
const char *pubkey, const char *tempdir){
147
int ret;
148
100
gpgme_error_t rc;
101
ssize_t ret;
102
ssize_t plaintext_capacity = 0;
103
ssize_t plaintext_length = 0;
149
104
gpgme_engine_info_t engine_info;
150
105
151
152
/*
153
* Helper function to insert pub and seckey to the enigne keyring.
154
*/
155
bool import_key(const char *filename){
156
int fd;
157
gpgme_data_t pgp_data;
158
159
fd = TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
160
if(fd == -1){
161
perror("open");
162
return false;
163
}
164
165
rc = gpgme_data_new_from_fd(&pgp_data, fd);
166
if (rc != GPG_ERR_NO_ERROR){
167
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
168
gpgme_strsource(rc), gpgme_strerror(rc));
169
return false;
170
}
171
172
rc = gpgme_op_import(mc->ctx, pgp_data);
173
if (rc != GPG_ERR_NO_ERROR){
174
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
175
gpgme_strsource(rc), gpgme_strerror(rc));
176
return false;
177
}
178
179
ret = TEMP_FAILURE_RETRY(close(fd));
180
if(ret == -1){
181
perror("close");
182
}
183
gpgme_data_release(pgp_data);
184
return true;
185
}
186
187
106
if (debug){
188
fprintf(stderr, "Initialize gpgme\n");
107
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
189
108
}
190
109
191
110
/* Init GPGME */
194
113
if (rc != GPG_ERR_NO_ERROR){
195
114
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
196
115
gpgme_strsource(rc), gpgme_strerror(rc));
197
return false;
116
return -1;
198
117
}
199
118
200
/* Set GPGME home directory for the OpenPGP engine only */
119
/* Set GPGME home directory for the OpenPGP engine only */
201
120
rc = gpgme_get_engine_info (&engine_info);
202
121
if (rc != GPG_ERR_NO_ERROR){
203
122
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
204
123
gpgme_strsource(rc), gpgme_strerror(rc));
205
return false;
124
return -1;
206
125
}
207
126
while(engine_info != NULL){
208
127
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
209
128
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
210
engine_info->file_name, tempdir);
129
engine_info->file_name, homedir);
211
130
break;
212
131
}
213
132
engine_info = engine_info->next;
214
133
}
215
134
if(engine_info == NULL){
216
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
217
return false;
218
}
219
220
/* Create new GPGME "context" */
221
rc = gpgme_new(&(mc->ctx));
222
if (rc != GPG_ERR_NO_ERROR){
223
fprintf(stderr, "bad gpgme_new: %s: %s\n",
224
gpgme_strsource(rc), gpgme_strerror(rc));
225
return false;
226
}
227
228
if (not import_key(pubkey) or not import_key(seckey)){
229
return false;
230
}
231
232
return true;
233
}
234
235
/*
236
* Decrypt OpenPGP data.
237
* Returns -1 on error
238
*/
239
static ssize_t pgp_packet_decrypt (const mandos_context *mc,
240
const char *cryptotext,
241
size_t crypto_size,
242
char **plaintext){
243
gpgme_data_t dh_crypto, dh_plain;
244
gpgme_error_t rc;
245
ssize_t ret;
246
size_t plaintext_capacity = 0;
247
ssize_t plaintext_length = 0;
248
249
if (debug){
250
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
135
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
136
return -1;
251
137
}
252
138
253
139
/* Create new GPGME data buffer from memory cryptotext */
268
154
return -1;
269
155
}
270
156
157
/* Create new GPGME "context" */
158
rc = gpgme_new(&ctx);
159
if (rc != GPG_ERR_NO_ERROR){
160
fprintf(stderr, "bad gpgme_new: %s: %s\n",
161
gpgme_strsource(rc), gpgme_strerror(rc));
162
plaintext_length = -1;
163
goto decrypt_end;
164
}
165
271
166
/* Decrypt data from the cryptotext data buffer to the plaintext
272
167
data buffer */
273
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
168
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
274
169
if (rc != GPG_ERR_NO_ERROR){
275
170
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
276
171
gpgme_strsource(rc), gpgme_strerror(rc));
277
172
plaintext_length = -1;
278
if (debug){
279
gpgme_decrypt_result_t result;
280
result = gpgme_op_decrypt_result(mc->ctx);
281
if (result == NULL){
282
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
283
} else {
284
fprintf(stderr, "Unsupported algorithm: %s\n",
285
result->unsupported_algorithm);
286
fprintf(stderr, "Wrong key usage: %u\n",
287
result->wrong_key_usage);
288
if(result->file_name != NULL){
289
fprintf(stderr, "File name: %s\n", result->file_name);
290
}
291
gpgme_recipient_t recipient;
292
recipient = result->recipients;
293
if(recipient){
294
while(recipient != NULL){
295
fprintf(stderr, "Public key algorithm: %s\n",
296
gpgme_pubkey_algo_name(recipient->pubkey_algo));
297
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
298
fprintf(stderr, "Secret key available: %s\n",
299
recipient->status == GPG_ERR_NO_SECKEY
300
? "No" : "Yes");
301
recipient = recipient->next;
302
}
303
}
304
}
305
}
306
173
goto decrypt_end;
307
174
}
308
175
310
177
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
311
178
}
312
179
180
if (debug){
181
gpgme_decrypt_result_t result;
182
result = gpgme_op_decrypt_result(ctx);
183
if (result == NULL){
184
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
185
} else {
186
fprintf(stderr, "Unsupported algorithm: %s\n",
187
result->unsupported_algorithm);
188
fprintf(stderr, "Wrong key usage: %d\n",
189
result->wrong_key_usage);
190
if(result->file_name != NULL){
191
fprintf(stderr, "File name: %s\n", result->file_name);
192
}
193
gpgme_recipient_t recipient;
194
recipient = result->recipients;
195
if(recipient){
196
while(recipient != NULL){
197
fprintf(stderr, "Public key algorithm: %s\n",
198
gpgme_pubkey_algo_name(recipient->pubkey_algo));
199
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
200
fprintf(stderr, "Secret key available: %s\n",
201
recipient->status == GPG_ERR_NO_SECKEY
202
? "No" : "Yes");
203
recipient = recipient->next;
204
}
205
}
206
}
207
}
208
313
209
/* Seek back to the beginning of the GPGME plaintext data buffer */
314
210
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
315
perror("gpgme_data_seek");
211
perror("pgpme_data_seek");
316
212
plaintext_length = -1;
317
213
goto decrypt_end;
318
214
}
319
215
320
216
*plaintext = NULL;
321
217
while(true){
322
plaintext_capacity = adjustbuffer(plaintext,
323
(size_t)plaintext_length,
324
plaintext_capacity);
325
if (plaintext_capacity == 0){
326
perror("adjustbuffer");
218
if (plaintext_length + BUFFER_SIZE > plaintext_capacity){
219
*plaintext = realloc(*plaintext,
220
(unsigned int)plaintext_capacity
221
+ BUFFER_SIZE);
222
if (*plaintext == NULL){
223
perror("realloc");
327
224
plaintext_length = -1;
328
225
goto decrypt_end;
226
}
227
plaintext_capacity += BUFFER_SIZE;
329
228
}
330
229
331
230
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
342
241
}
343
242
plaintext_length += ret;
344
243
}
345
244
346
245
if(debug){
347
246
fprintf(stderr, "Decrypted password is: ");
348
for(ssize_t i = 0; i < plaintext_length; i++){
247
for(size_t i = 0; i < plaintext_length; i++){
349
248
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
350
249
}
351
250
fprintf(stderr, "\n");
362
261
}
363
262
364
263
static const char * safer_gnutls_strerror (int value) {
365
const char *ret = gnutls_strerror (value); /* Spurious warning */
264
const char *ret = gnutls_strerror (value);
366
265
if (ret == NULL)
367
266
ret = "(unknown)";
368
267
return ret;
369
268
}
370
269
371
/* GnuTLS log function callback */
372
270
static void debuggnutls(__attribute__((unused)) int level,
373
271
const char* string){
374
fprintf(stderr, "GnuTLS: %s", string);
272
fprintf(stderr, "%s", string);
375
273
}
376
274
377
static int init_gnutls_global(mandos_context *mc,
378
const char *pubkeyfilename,
379
const char *seckeyfilename){
275
static int initgnutls(mandos_context *mc, gnutls_session_t *session,
276
gnutls_dh_params_t *dh_params){
277
const char *err;
380
278
int ret;
381
279
382
280
if(debug){
383
281
fprintf(stderr, "Initializing GnuTLS\n");
384
282
}
385
386
ret = gnutls_global_init();
387
if (ret != GNUTLS_E_SUCCESS) {
388
fprintf (stderr, "GnuTLS global_init: %s\n",
389
safer_gnutls_strerror(ret));
283
284
if ((ret = gnutls_global_init ())
285
!= GNUTLS_E_SUCCESS) {
286
fprintf (stderr, "global_init: %s\n", safer_gnutls_strerror(ret));
390
287
return -1;
391
288
}
392
289
393
290
if (debug){
394
/* "Use a log level over 10 to enable all debugging options."
395
* - GnuTLS manual
396
*/
397
291
gnutls_global_set_log_level(11);
398
292
gnutls_global_set_log_function(debuggnutls);
399
293
}
400
294
401
/* OpenPGP credentials */
402
gnutls_certificate_allocate_credentials(&mc->cred);
403
if (ret != GNUTLS_E_SUCCESS){
404
fprintf (stderr, "GnuTLS memory error: %s\n", /* Spurious
405
warning */
295
/* openpgp credentials */
296
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
297
!= GNUTLS_E_SUCCESS) {
298
fprintf (stderr, "memory error: %s\n",
406
299
safer_gnutls_strerror(ret));
407
gnutls_global_deinit ();
408
300
return -1;
409
301
}
410
302
411
303
if(debug){
412
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
413
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
414
seckeyfilename);
304
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
305
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
306
seckeyfile);
415
307
}
416
308
417
309
ret = gnutls_certificate_set_openpgp_key_file
418
(mc->cred, pubkeyfilename, seckeyfilename,
419
GNUTLS_OPENPGP_FMT_BASE64);
310
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
420
311
if (ret != GNUTLS_E_SUCCESS) {
421
fprintf(stderr,
422
"Error[%d] while reading the OpenPGP key pair ('%s',"
423
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
424
fprintf(stderr, "The GnuTLS error is: %s\n",
312
fprintf
313
(stderr, "Error[%d] while reading the OpenPGP key pair ('%s',"
314
" '%s')\n",
315
ret, pubkeyfile, seckeyfile);
316
fprintf(stdout, "The Error is: %s\n",
425
317
safer_gnutls_strerror(ret));
426
goto globalfail;
427
}
428
429
/* GnuTLS server initialization */
430
ret = gnutls_dh_params_init(&mc->dh_params);
431
if (ret != GNUTLS_E_SUCCESS) {
432
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
433
" %s\n", safer_gnutls_strerror(ret));
434
goto globalfail;
435
}
436
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
437
if (ret != GNUTLS_E_SUCCESS) {
438
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
439
safer_gnutls_strerror(ret));
440
goto globalfail;
441
}
442
443
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
444
445
return 0;
446
447
globalfail:
448
449
gnutls_certificate_free_credentials(mc->cred);
450
gnutls_global_deinit();
451
gnutls_dh_params_deinit(mc->dh_params);
452
return -1;
453
}
454
455
static int init_gnutls_session(mandos_context *mc,
456
gnutls_session_t *session){
457
int ret;
458
/* GnuTLS session creation */
459
ret = gnutls_init(session, GNUTLS_SERVER);
460
if (ret != GNUTLS_E_SUCCESS){
318
return -1;
319
}
320
321
//GnuTLS server initialization
322
if ((ret = gnutls_dh_params_init(dh_params))
323
!= GNUTLS_E_SUCCESS) {
324
fprintf (stderr, "Error in dh parameter initialization: %s\n",
325
safer_gnutls_strerror(ret));
326
return -1;
327
}
328
329
if ((ret = gnutls_dh_params_generate2(*dh_params, mc->dh_bits))
330
!= GNUTLS_E_SUCCESS) {
331
fprintf (stderr, "Error in prime generation: %s\n",
332
safer_gnutls_strerror(ret));
333
return -1;
334
}
335
336
gnutls_certificate_set_dh_params(mc->cred, *dh_params);
337
338
// GnuTLS session creation
339
if ((ret = gnutls_init(session, GNUTLS_SERVER))
340
!= GNUTLS_E_SUCCESS){
461
341
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
462
342
safer_gnutls_strerror(ret));
463
343
}
464
344
465
{
466
const char *err;
467
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
468
if (ret != GNUTLS_E_SUCCESS) {
469
fprintf(stderr, "Syntax error at: %s\n", err);
470
fprintf(stderr, "GnuTLS error: %s\n",
471
safer_gnutls_strerror(ret));
472
gnutls_deinit (*session);
473
return -1;
474
}
345
if ((ret = gnutls_priority_set_direct(*session, mc->priority, &err))
346
!= GNUTLS_E_SUCCESS) {
347
fprintf(stderr, "Syntax error at: %s\n", err);
348
fprintf(stderr, "GnuTLS error: %s\n",
349
safer_gnutls_strerror(ret));
350
return -1;
475
351
}
476
352
477
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
478
mc->cred);
479
if (ret != GNUTLS_E_SUCCESS) {
480
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
353
if ((ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
354
mc->cred))
355
!= GNUTLS_E_SUCCESS) {
356
fprintf(stderr, "Error setting a credentials set: %s\n",
481
357
safer_gnutls_strerror(ret));
482
gnutls_deinit (*session);
483
358
return -1;
484
359
}
485
360
492
367
return 0;
493
368
}
494
369
495
/* Avahi log function callback */
496
370
static void empty_log(__attribute__((unused)) AvahiLogLevel level,
497
371
__attribute__((unused)) const char *txt){}
498
372
499
/* Called when a Mandos server is found */
500
373
static int start_mandos_communication(const char *ip, uint16_t port,
501
374
AvahiIfIndex if_index,
502
375
mandos_context *mc){
503
376
int ret, tcp_sd;
504
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
377
struct sockaddr_in6 to;
505
378
char *buffer = NULL;
506
379
char *decrypted_buffer;
507
380
size_t buffer_length = 0;
508
381
size_t buffer_capacity = 0;
509
382
ssize_t decrypted_buffer_size;
510
size_t written;
383
size_t written = 0;
511
384
int retval = 0;
512
385
char interface[IF_NAMESIZE];
513
386
gnutls_session_t session;
514
515
ret = init_gnutls_session (mc, &session);
516
if (ret != 0){
517
return -1;
518
}
387
gnutls_dh_params_t dh_params;
519
388
520
389
if(debug){
521
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
522
"\n", ip, port);
390
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
391
ip, port);
523
392
}
524
393
525
394
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
527
396
perror("socket");
528
397
return -1;
529
398
}
530
399
531
400
if(debug){
532
401
if(if_indextoname((unsigned int)if_index, interface) == NULL){
533
402
perror("if_indextoname");
536
405
fprintf(stderr, "Binding to interface %s\n", interface);
537
406
}
538
407
539
memset(&to, 0, sizeof(to));
540
to.in6.sin6_family = AF_INET6;
541
/* It would be nice to have a way to detect if we were passed an
542
IPv4 address here. Now we assume an IPv6 address. */
543
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
408
memset(&to,0,sizeof(to)); /* Spurious warning */
409
to.sin6_family = AF_INET6;
410
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
544
411
if (ret < 0 ){
545
412
perror("inet_pton");
546
413
return -1;
549
416
fprintf(stderr, "Bad address: %s\n", ip);
550
417
return -1;
551
418
}
552
to.in6.sin6_port = htons(port); /* Spurious warning */
419
to.sin6_port = htons(port); /* Spurious warning */
553
420
554
to.in6.sin6_scope_id = (uint32_t)if_index;
421
to.sin6_scope_id = (uint32_t)if_index;
555
422
556
423
if(debug){
557
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
558
port);
424
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
559
425
char addrstr[INET6_ADDRSTRLEN] = "";
560
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
426
if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr,
561
427
sizeof(addrstr)) == NULL){
562
428
perror("inet_ntop");
563
429
} else {
567
433
}
568
434
}
569
435
570
ret = connect(tcp_sd, &to.in, sizeof(to));
436
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
571
437
if (ret < 0){
572
438
perror("connect");
573
439
return -1;
574
440
}
575
441
576
const char *out = mandos_protocol_version;
577
written = 0;
578
while (true){
579
size_t out_size = strlen(out);
580
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
581
out_size - written));
582
if (ret == -1){
583
perror("write");
584
retval = -1;
585
goto mandos_end;
586
}
587
written += (size_t)ret;
588
if(written < out_size){
589
continue;
590
} else {
591
if (out == mandos_protocol_version){
592
written = 0;
593
out = "\r\n";
594
} else {
595
break;
596
}
597
}
442
ret = initgnutls (mc, &session, &dh_params);
443
if (ret != 0){
444
retval = -1;
445
return -1;
598
446
}
599
447
448
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
449
600
450
if(debug){
601
451
fprintf(stderr, "Establishing TLS session with %s\n", ip);
602
452
}
603
453
604
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
605
606
do{
607
ret = gnutls_handshake (session);
608
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
454
ret = gnutls_handshake (session);
609
455
610
456
if (ret != GNUTLS_E_SUCCESS){
611
457
if(debug){
612
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
458
fprintf(stderr, "\n*** Handshake failed ***\n");
613
459
gnutls_perror (ret);
614
460
}
615
461
retval = -1;
616
goto mandos_end;
462
goto exit;
617
463
}
618
464
619
/* Read OpenPGP packet that contains the wanted password */
465
//Retrieve OpenPGP packet that contains the wanted password
620
466
621
467
if(debug){
622
468
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
623
469
ip);
624
470
}
625
471
626
472
while(true){
627
buffer_capacity = adjustbuffer(&buffer, buffer_length,
628
buffer_capacity);
629
if (buffer_capacity == 0){
630
perror("adjustbuffer");
631
retval = -1;
632
goto mandos_end;
473
if (buffer_length + BUFFER_SIZE > buffer_capacity){
474
buffer = realloc(buffer, buffer_capacity + BUFFER_SIZE);
475
if (buffer == NULL){
476
perror("realloc");
477
goto exit;
478
}
479
buffer_capacity += BUFFER_SIZE;
633
480
}
634
481
635
482
ret = gnutls_record_recv(session, buffer+buffer_length,
643
490
case GNUTLS_E_AGAIN:
644
491
break;
645
492
case GNUTLS_E_REHANDSHAKE:
646
do{
647
ret = gnutls_handshake (session);
648
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
493
ret = gnutls_handshake (session);
649
494
if (ret < 0){
650
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
495
fprintf(stderr, "\n*** Handshake failed ***\n");
651
496
gnutls_perror (ret);
652
497
retval = -1;
653
goto mandos_end;
498
goto exit;
654
499
}
655
500
break;
656
501
default:
657
502
fprintf(stderr, "Unknown error while reading data from"
658
" encrypted session with Mandos server\n");
503
" encrypted session with mandos server\n");
659
504
retval = -1;
660
505
gnutls_bye (session, GNUTLS_SHUT_RDWR);
661
goto mandos_end;
506
goto exit;
662
507
}
663
508
} else {
664
509
buffer_length += (size_t) ret;
665
510
}
666
511
}
667
512
668
if(debug){
669
fprintf(stderr, "Closing TLS session\n");
670
}
671
672
gnutls_bye (session, GNUTLS_SHUT_RDWR);
673
674
513
if (buffer_length > 0){
675
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
514
decrypted_buffer_size = pgp_packet_decrypt(buffer,
676
515
buffer_length,
677
&decrypted_buffer);
516
&decrypted_buffer,
517
keydir);
678
518
if (decrypted_buffer_size >= 0){
679
written = 0;
680
519
while(written < (size_t) decrypted_buffer_size){
681
520
ret = (int)fwrite (decrypted_buffer + written, 1,
682
521
(size_t)decrypted_buffer_size - written,
695
534
} else {
696
535
retval = -1;
697
536
}
698
} else {
699
retval = -1;
700
}
701
702
/* Shutdown procedure */
703
704
mandos_end:
537
}
538
539
//shutdown procedure
540
541
if(debug){
542
fprintf(stderr, "Closing TLS session\n");
543
}
544
705
545
free(buffer);
706
ret = TEMP_FAILURE_RETRY(close(tcp_sd));
707
if(ret == -1){
708
perror("close");
709
}
546
gnutls_bye (session, GNUTLS_SHUT_RDWR);
547
exit:
548
close(tcp_sd);
710
549
gnutls_deinit (session);
550
gnutls_certificate_free_credentials (mc->cred);
551
gnutls_global_deinit ();
711
552
return retval;
712
553
}
713
554
726
567
flags,
727
568
void* userdata) {
728
569
mandos_context *mc = userdata;
729
assert(r);
570
assert(r); /* Spurious warning */
730
571
731
572
/* Called whenever a service has been resolved successfully or
732
573
timed out */
734
575
switch (event) {
735
576
default:
736
577
case AVAHI_RESOLVER_FAILURE:
737
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
738
" of type '%s' in domain '%s': %s\n", name, type, domain,
578
fprintf(stderr, "(Resolver) Failed to resolve service '%s' of"
579
" type '%s' in domain '%s': %s\n", name, type, domain,
739
580
avahi_strerror(avahi_server_errno(mc->server)));
740
581
break;
741
582
744
585
char ip[AVAHI_ADDRESS_STR_MAX];
745
586
avahi_address_snprint(ip, sizeof(ip), address);
746
587
if(debug){
747
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
748
PRIu16 ") on port %d\n", name, host_name, ip,
749
interface, port);
588
fprintf(stderr, "Mandos server \"%s\" found on %s (%s) on"
589
" port %d\n", name, host_name, ip, port);
750
590
}
751
591
int ret = start_mandos_communication(ip, port, interface, mc);
752
592
if (ret == 0){
753
avahi_simple_poll_quit(mc->simple_poll);
593
exit(EXIT_SUCCESS);
754
594
}
755
595
}
756
596
}
768
608
flags,
769
609
void* userdata) {
770
610
mandos_context *mc = userdata;
771
assert(b);
611
assert(b); /* Spurious warning */
772
612
773
613
/* Called whenever a new services becomes available on the LAN or
774
614
is removed from the LAN */
777
617
default:
778
618
case AVAHI_BROWSER_FAILURE:
779
619
780
fprintf(stderr, "(Avahi browser) %s\n",
620
fprintf(stderr, "(Browser) %s\n",
781
621
avahi_strerror(avahi_server_errno(mc->server)));
782
622
avahi_simple_poll_quit(mc->simple_poll);
783
623
return;
784
624
785
625
case AVAHI_BROWSER_NEW:
786
/* We ignore the returned Avahi resolver object. In the callback
787
function we free it. If the Avahi server is terminated before
788
the callback function is called the Avahi server will free the
789
resolver for us. */
626
/* We ignore the returned resolver object. In the callback
627
function we free it. If the server is terminated before
628
the callback function is called the server will free
629
the resolver for us. */
790
630
791
631
if (!(avahi_s_service_resolver_new(mc->server, interface,
792
632
protocol, name, type, domain,
793
633
AVAHI_PROTO_INET6, 0,
794
634
resolve_callback, mc)))
795
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
796
name, avahi_strerror(avahi_server_errno(mc->server)));
635
fprintf(stderr, "Failed to resolve service '%s': %s\n", name,
636
avahi_strerror(avahi_server_errno(mc->server)));
797
637
break;
798
638
799
639
case AVAHI_BROWSER_REMOVE:
801
641
802
642
case AVAHI_BROWSER_ALL_FOR_NOW:
803
643
case AVAHI_BROWSER_CACHE_EXHAUSTED:
804
if(debug){
805
fprintf(stderr, "No Mandos server found, still searching...\n");
806
}
807
644
break;
808
645
}
809
646
}
810
647
811
int main(int argc, char *argv[]){
648
/* Combines file name and path and returns the malloced new
649
string. some sane checks could/should be added */
650
static const char *combinepath(const char *first, const char *second){
651
size_t f_len = strlen(first);
652
size_t s_len = strlen(second);
653
char *tmp = malloc(f_len + s_len + 2);
654
if (tmp == NULL){
655
return NULL;
656
}
657
if(f_len > 0){
658
memcpy(tmp, first, f_len); /* Spurious warning */
659
}
660
tmp[f_len] = '/';
661
if(s_len > 0){
662
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
663
}
664
tmp[f_len + 1 + s_len] = '\0';
665
return tmp;
666
}
667
668
669
int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char*argv[]) {
670
AvahiServerConfig config;
812
671
AvahiSServiceBrowser *sb = NULL;
813
672
int error;
814
673
int ret;
815
int exitcode = EXIT_SUCCESS;
674
int debug_int;
675
int returncode = EXIT_SUCCESS;
816
676
const char *interface = "eth0";
817
677
struct ifreq network;
818
678
int sd;
819
uid_t uid;
820
gid_t gid;
821
679
char *connect_to = NULL;
822
char tempdir[] = "/tmp/mandosXXXXXX";
823
680
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
824
const char *seckey = PATHDIR "/" SECKEY;
825
const char *pubkey = PATHDIR "/" PUBKEY;
826
827
681
mandos_context mc = { .simple_poll = NULL, .server = NULL,
828
.dh_bits = 1024, .priority = "SECURE256"
829
":!CTYPE-X.509:+CTYPE-OPENPGP" };
830
bool gnutls_initalized = false;
831
bool gpgme_initalized = false;
832
833
{
834
struct argp_option options[] = {
835
{ .name = "debug", .key = 128,
836
.doc = "Debug mode", .group = 3 },
837
{ .name = "connect", .key = 'c',
838
.arg = "ADDRESS:PORT",
839
.doc = "Connect directly to a specific Mandos server",
840
.group = 1 },
841
{ .name = "interface", .key = 'i',
842
.arg = "NAME",
843
.doc = "Interface that will be used to search for Mandos"
844
" servers",
845
.group = 1 },
846
{ .name = "seckey", .key = 's',
847
.arg = "FILE",
848
.doc = "OpenPGP secret key file base name",
849
.group = 1 },
850
{ .name = "pubkey", .key = 'p',
851
.arg = "FILE",
852
.doc = "OpenPGP public key file base name",
853
.group = 2 },
854
{ .name = "dh-bits", .key = 129,
855
.arg = "BITS",
856
.doc = "Bit length of the prime number used in the"
857
" Diffie-Hellman key exchange",
858
.group = 2 },
859
{ .name = "priority", .key = 130,
860
.arg = "STRING",
861
.doc = "GnuTLS priority string for the TLS handshake",
862
.group = 1 },
863
{ .name = NULL }
864
};
865
866
error_t parse_opt (int key, char *arg,
867
struct argp_state *state) {
868
/* Get the INPUT argument from `argp_parse', which we know is
869
a pointer to our plugin list pointer. */
870
switch (key) {
871
case 128: /* --debug */
872
debug = true;
873
break;
874
case 'c': /* --connect */
875
connect_to = arg;
876
break;
877
case 'i': /* --interface */
878
interface = arg;
879
break;
880
case 's': /* --seckey */
881
seckey = arg;
882
break;
883
case 'p': /* --pubkey */
884
pubkey = arg;
885
break;
886
case 129: /* --dh-bits */
887
errno = 0;
888
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
889
if (errno){
890
perror("strtol");
891
exit(EXIT_FAILURE);
892
}
893
break;
894
case 130: /* --priority */
895
mc.priority = arg;
896
break;
897
case ARGP_KEY_ARG:
898
argp_usage (state);
899
case ARGP_KEY_END:
900
break;
901
default:
902
return ARGP_ERR_UNKNOWN;
903
}
904
return 0;
905
}
906
907
struct argp argp = { .options = options, .parser = parse_opt,
908
.args_doc = "",
909
.doc = "Mandos client -- Get and decrypt"
910
" passwords from a Mandos server" };
911
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
912
if (ret == ARGP_ERR_UNKNOWN){
913
fprintf(stderr, "Unknown error while parsing arguments\n");
914
exitcode = EXIT_FAILURE;
915
goto end;
916
}
917
}
918
919
/* If the interface is down, bring it up */
920
{
921
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
922
if(sd < 0) {
923
perror("socket");
924
exitcode = EXIT_FAILURE;
925
goto end;
926
}
927
strcpy(network.ifr_name, interface);
928
ret = ioctl(sd, SIOCGIFFLAGS, &network);
929
if(ret == -1){
930
perror("ioctl SIOCGIFFLAGS");
931
exitcode = EXIT_FAILURE;
932
goto end;
933
}
934
if((network.ifr_flags & IFF_UP) == 0){
935
network.ifr_flags |= IFF_UP;
936
ret = ioctl(sd, SIOCSIFFLAGS, &network);
937
if(ret == -1){
938
perror("ioctl SIOCSIFFLAGS");
939
exitcode = EXIT_FAILURE;
940
goto end;
941
}
942
}
943
ret = TEMP_FAILURE_RETRY(close(sd));
944
if(ret == -1){
945
perror("close");
946
}
947
}
948
949
uid = getuid();
950
gid = getgid();
951
952
ret = setuid(uid);
953
if (ret == -1){
954
perror("setuid");
955
}
956
957
setgid(gid);
958
if (ret == -1){
959
perror("setgid");
960
}
961
962
ret = init_gnutls_global(&mc, pubkey, seckey);
963
if (ret == -1){
964
fprintf(stderr, "init_gnutls_global failed\n");
965
exitcode = EXIT_FAILURE;
966
goto end;
967
} else {
968
gnutls_initalized = true;
969
}
970
971
if(mkdtemp(tempdir) == NULL){
972
perror("mkdtemp");
973
tempdir[0] = '\0';
974
goto end;
975
}
976
977
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
978
fprintf(stderr, "gpgme_initalized failed\n");
979
exitcode = EXIT_FAILURE;
980
goto end;
981
} else {
982
gpgme_initalized = true;
682
.dh_bits = 1024, .priority = "SECURE256"};
683
684
debug_int = debug ? 1 : 0;
685
while (true){
686
struct option long_options[] = {
687
{"debug", no_argument, &debug_int, 1},
688
{"connect", required_argument, NULL, 'c'},
689
{"interface", required_argument, NULL, 'i'},
690
{"keydir", required_argument, NULL, 'd'},
691
{"seckey", required_argument, NULL, 's'},
692
{"pubkey", required_argument, NULL, 'p'},
693
{"dh-bits", required_argument, NULL, 'D'},
694
{"priority", required_argument, NULL, 'P'},
695
{0, 0, 0, 0} };
696
697
int option_index = 0;
698
ret = getopt_long (argc, argv, "i:", long_options,
699
&option_index);
700
701
if (ret == -1){
702
break;
703
}
704
705
switch(ret){
706
case 0:
707
break;
708
case 'i':
709
interface = optarg;
710
break;
711
case 'c':
712
connect_to = optarg;
713
break;
714
case 'd':
715
keydir = optarg;
716
break;
717
case 'p':
718
pubkeyfile = optarg;
719
break;
720
case 's':
721
seckeyfile = optarg;
722
break;
723
case 'D':
724
errno = 0;
725
mc.dh_bits = (unsigned int) strtol(optarg, NULL, 10);
726
if (errno){
727
perror("strtol");
728
exit(EXIT_FAILURE);
729
}
730
break;
731
case 'P':
732
mc.priority = optarg;
733
break;
734
case '?':
735
default:
736
exit(EXIT_FAILURE);
737
}
738
}
739
debug = debug_int ? true : false;
740
741
pubkeyfile = combinepath(keydir, pubkeyfile);
742
if (pubkeyfile == NULL){
743
perror("combinepath");
744
returncode = EXIT_FAILURE;
745
goto exit;
746
}
747
748
seckeyfile = combinepath(keydir, seckeyfile);
749
if (seckeyfile == NULL){
750
perror("combinepath");
751
goto exit;
983
752
}
984
753
985
754
if_index = (AvahiIfIndex) if_nametoindex(interface);
994
763
char *address = strrchr(connect_to, ':');
995
764
if(address == NULL){
996
765
fprintf(stderr, "No colon in address\n");
997
exitcode = EXIT_FAILURE;
998
goto end;
766
exit(EXIT_FAILURE);
999
767
}
1000
768
errno = 0;
1001
769
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
1002
770
if(errno){
1003
771
perror("Bad port number");
1004
exitcode = EXIT_FAILURE;
1005
goto end;
772
exit(EXIT_FAILURE);
1006
773
}
1007
774
*address = '\0';
1008
775
address = connect_to;
1009
776
ret = start_mandos_communication(address, port, if_index, &mc);
1010
777
if(ret < 0){
1011
exitcode = EXIT_FAILURE;
778
exit(EXIT_FAILURE);
1012
779
} else {
1013
exitcode = EXIT_SUCCESS;
1014
}
1015
goto end;
1016
}
780
exit(EXIT_SUCCESS);
781
}
782
}
783
784
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
785
if(sd < 0) {
786
perror("socket");
787
returncode = EXIT_FAILURE;
788
goto exit;
789
}
790
strcpy(network.ifr_name, interface); /* Spurious warning */
791
ret = ioctl(sd, SIOCGIFFLAGS, &network);
792
if(ret == -1){
793
794
perror("ioctl SIOCGIFFLAGS");
795
returncode = EXIT_FAILURE;
796
goto exit;
797
}
798
if((network.ifr_flags & IFF_UP) == 0){
799
network.ifr_flags |= IFF_UP;
800
ret = ioctl(sd, SIOCSIFFLAGS, &network);
801
if(ret == -1){
802
perror("ioctl SIOCSIFFLAGS");
803
returncode = EXIT_FAILURE;
804
goto exit;
805
}
806
}
807
close(sd);
1017
808
1018
809
if (not debug){
1019
810
avahi_set_log_function(empty_log);
1020
811
}
1021
812
1022
/* Initialize the pseudo-RNG for Avahi */
813
/* Initialize the psuedo-RNG */
1023
814
srand((unsigned int) time(NULL));
1024
1025
/* Allocate main Avahi loop object */
1026
mc.simple_poll = avahi_simple_poll_new();
1027
if (mc.simple_poll == NULL) {
1028
fprintf(stderr, "Avahi: Failed to create simple poll"
1029
" object.\n");
1030
exitcode = EXIT_FAILURE;
1031
goto end;
1032
}
1033
1034
{
1035
AvahiServerConfig config;
1036
/* Do not publish any local Zeroconf records */
1037
avahi_server_config_init(&config);
1038
config.publish_hinfo = 0;
1039
config.publish_addresses = 0;
1040
config.publish_workstation = 0;
1041
config.publish_domain = 0;
1042
1043
/* Allocate a new server */
1044
mc.server = avahi_server_new(avahi_simple_poll_get
1045
(mc.simple_poll), &config, NULL,
1046
NULL, &error);
1047
1048
/* Free the Avahi configuration data */
1049
avahi_server_config_free(&config);
1050
}
1051
1052
/* Check if creating the Avahi server object succeeded */
1053
if (mc.server == NULL) {
1054
fprintf(stderr, "Failed to create Avahi server: %s\n",
815
816
/* Allocate main loop object */
817
if (!(mc.simple_poll = avahi_simple_poll_new())) {
818
fprintf(stderr, "Failed to create simple poll object.\n");
819
returncode = EXIT_FAILURE;
820
goto exit;
821
}
822
823
/* Do not publish any local records */
824
avahi_server_config_init(&config);
825
config.publish_hinfo = 0;
826
config.publish_addresses = 0;
827
config.publish_workstation = 0;
828
config.publish_domain = 0;
829
830
/* Allocate a new server */
831
mc.server=avahi_server_new(avahi_simple_poll_get(mc.simple_poll),
832
&config, NULL, NULL, &error);
833
834
/* Free the configuration data */
835
avahi_server_config_free(&config);
836
837
/* Check if creating the server object succeeded */
838
if (!mc.server) {
839
fprintf(stderr, "Failed to create server: %s\n",
1055
840
avahi_strerror(error));
1056
exitcode = EXIT_FAILURE;
1057
goto end;
841
returncode = EXIT_FAILURE;
842
goto exit;
1058
843
}
1059
844
1060
/* Create the Avahi service browser */
845
/* Create the service browser */
1061
846
sb = avahi_s_service_browser_new(mc.server, if_index,
1062
847
AVAHI_PROTO_INET6,
1063
848
"_mandos._tcp", NULL, 0,
1064
849
browse_callback, &mc);
1065
if (sb == NULL) {
850
if (!sb) {
1066
851
fprintf(stderr, "Failed to create service browser: %s\n",
1067
852
avahi_strerror(avahi_server_errno(mc.server)));
1068
exitcode = EXIT_FAILURE;
1069
goto end;
853
returncode = EXIT_FAILURE;
854
goto exit;
1070
855
}
1071
856
1072
857
/* Run the main loop */
1073
858
1074
859
if (debug){
1075
fprintf(stderr, "Starting Avahi loop search\n");
860
fprintf(stderr, "Starting avahi loop search\n");
1076
861
}
1077
862
1078
863
avahi_simple_poll_loop(mc.simple_poll);
1079
864
1080
end:
1081
865
exit:
866
1082
867
if (debug){
1083
868
fprintf(stderr, "%s exiting\n", argv[0]);
1084
869
}
1085
870
1086
871
/* Cleanup things */
1087
if (sb != NULL)
872
if (sb)
1088
873
avahi_s_service_browser_free(sb);
1089
874
1090
if (mc.server != NULL)
875
if (mc.server)
1091
876
avahi_server_free(mc.server);
1092
1093
if (mc.simple_poll != NULL)
877
878
if (mc.simple_poll)
1094
879
avahi_simple_poll_free(mc.simple_poll);
1095
1096
if (gnutls_initalized){
1097
gnutls_certificate_free_credentials(mc.cred);
1098
gnutls_global_deinit ();
1099
gnutls_dh_params_deinit(mc.dh_params);
1100
}
1101
1102
if(gpgme_initalized){
1103
gpgme_release(mc.ctx);
1104
}
1105
1106
/* Removes the temp directory used by GPGME */
1107
if(tempdir[0] != '\0'){
1108
DIR *d;
1109
struct dirent *direntry;
1110
d = opendir(tempdir);
1111
if(d == NULL){
1112
perror("opendir");
1113
} else {
1114
while(true){
1115
direntry = readdir(d);
1116
if(direntry == NULL){
1117
break;
1118
}
1119
if (direntry->d_type == DT_REG){
1120
char *fullname = NULL;
1121
ret = asprintf(&fullname, "%s/%s", tempdir,
1122
direntry->d_name);
1123
if(ret < 0){
1124
perror("asprintf");
1125
continue;
1126
}
1127
ret = unlink(fullname);
1128
if(ret == -1){
1129
fprintf(stderr, "unlink(\"%s\"): %s",
1130
fullname, strerror(errno));
1131
}
1132
free(fullname);
1133
}
1134
}
1135
closedir(d);
1136
}
1137
ret = rmdir(tempdir);
1138
if(ret == -1){
1139
perror("rmdir");
1140
}
1141
}
1142
1143
return exitcode;
880
free(pubkeyfile);
881
free(seckeyfile);
882
883
return returncode;
1144
884
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0