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- Committer: Björn Påhlsson
- Date: 2008-08-04 15:50:19 UTC
- mto: (24.1.154 mandos) (237.4.3 mandos-release)
- mto: This revision was merged to the branch mainline in revision 42.
- Revision ID: belorn@braxen-20080804155019-uze55fh654j1f0ow
mandosclient
changed to argp
changed to argp
- 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
#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() */
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 */
64
44
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
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 */
45
SIOCSIFFLAGS */
77
46
78
/* Avahi */
79
/* All Avahi types, constants and functions
80
Avahi*, avahi_*,
81
AVAHI_* */
82
47
#include <avahi-core/core.h>
83
48
#include <avahi-core/lookup.h>
84
49
#include <avahi-core/log.h>
86
51
#include <avahi-common/malloc.h>
87
52
#include <avahi-common/error.h>
88
53
89
/* GnuTLS */
90
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
91
functions:
92
gnutls_*
93
init_gnutls_session(),
94
GNUTLS_* */
95
#include <gnutls/openpgp.h>
96
/* gnutls_certificate_set_openpgp_key_file(),
97
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 */
98
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 */
68
#include <argp.h> /* struct argp_option,
69
struct argp_state, struct argp,
70
argp_parse() */
99
71
/* GPGME */
100
#include <gpgme.h> /* All GPGME types, constants and
101
functions:
102
gpgme_*
103
GPGME_PROTOCOL_OpenPGP,
104
GPG_ERR_NO_* */
72
#include <errno.h> /* perror() */
73
#include <gpgme.h>
105
74
106
75
#define BUFFER_SIZE 256
107
76
108
#define PATHDIR "/conf/conf.d/mandos"
109
#define SECKEY "seckey.txt"
110
#define PUBKEY "pubkey.txt"
111
112
77
bool debug = false;
113
static const char mandos_protocol_version[] = "1";
114
const char *argp_program_version = "mandos-client " VERSION;
78
const char *keydir = "/conf/conf.d/mandos";
79
const char *argp_program_version = "mandosclient 0.9";
115
80
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
81
const char mandos_protocol_version[] = "1";
116
82
117
/* Used for passing in values through the Avahi callback functions */
83
/* Used for passing in values through all the callback functions */
118
84
typedef struct {
119
85
AvahiSimplePoll *simple_poll;
120
86
AvahiServer *server;
122
88
unsigned int dh_bits;
123
89
gnutls_dh_params_t dh_params;
124
90
const char *priority;
125
gpgme_ctx_t ctx;
126
91
} mandos_context;
127
92
128
/*
129
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
130
* "buffer_capacity" is how much is currently allocated,
131
* "buffer_length" is how much is already used.
132
*/
133
93
size_t adjustbuffer(char **buffer, size_t buffer_length,
134
94
size_t buffer_capacity){
135
if(buffer_length + BUFFER_SIZE > buffer_capacity){
95
if (buffer_length + BUFFER_SIZE > buffer_capacity){
136
96
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
137
if(buffer == NULL){
97
if (buffer == NULL){
138
98
return 0;
139
99
}
140
100
buffer_capacity += BUFFER_SIZE;
143
103
}
144
104
145
105
/*
146
* Initialize GPGME.
106
* Decrypt OpenPGP data using keyrings in HOMEDIR.
107
* Returns -1 on error
147
108
*/
148
static bool init_gpgme(mandos_context *mc, const char *seckey,
149
const char *pubkey, const char *tempdir){
150
int ret;
109
static ssize_t pgp_packet_decrypt (const char *cryptotext,
110
size_t crypto_size,
111
char **plaintext,
112
const char *homedir){
113
gpgme_data_t dh_crypto, dh_plain;
114
gpgme_ctx_t ctx;
151
115
gpgme_error_t rc;
116
ssize_t ret;
117
size_t plaintext_capacity = 0;
118
ssize_t plaintext_length = 0;
152
119
gpgme_engine_info_t engine_info;
153
120
154
155
/*
156
* Helper function to insert pub and seckey to the enigne keyring.
157
*/
158
bool import_key(const char *filename){
159
int fd;
160
gpgme_data_t pgp_data;
161
162
fd = (int)TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
163
if(fd == -1){
164
perror("open");
165
return false;
166
}
167
168
rc = gpgme_data_new_from_fd(&pgp_data, fd);
169
if(rc != GPG_ERR_NO_ERROR){
170
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
171
gpgme_strsource(rc), gpgme_strerror(rc));
172
return false;
173
}
174
175
rc = gpgme_op_import(mc->ctx, pgp_data);
176
if(rc != GPG_ERR_NO_ERROR){
177
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
178
gpgme_strsource(rc), gpgme_strerror(rc));
179
return false;
180
}
181
182
ret = (int)TEMP_FAILURE_RETRY(close(fd));
183
if(ret == -1){
184
perror("close");
185
}
186
gpgme_data_release(pgp_data);
187
return true;
188
}
189
190
if(debug){
191
fprintf(stderr, "Initialize gpgme\n");
121
if (debug){
122
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
192
123
}
193
124
194
125
/* Init GPGME */
195
126
gpgme_check_version(NULL);
196
127
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
197
if(rc != GPG_ERR_NO_ERROR){
128
if (rc != GPG_ERR_NO_ERROR){
198
129
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
199
130
gpgme_strsource(rc), gpgme_strerror(rc));
200
return false;
131
return -1;
201
132
}
202
133
203
/* Set GPGME home directory for the OpenPGP engine only */
204
rc = gpgme_get_engine_info(&engine_info);
205
if(rc != GPG_ERR_NO_ERROR){
134
/* Set GPGME home directory for the OpenPGP engine only */
135
rc = gpgme_get_engine_info (&engine_info);
136
if (rc != GPG_ERR_NO_ERROR){
206
137
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
207
138
gpgme_strsource(rc), gpgme_strerror(rc));
208
return false;
139
return -1;
209
140
}
210
141
while(engine_info != NULL){
211
142
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
212
143
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
213
engine_info->file_name, tempdir);
144
engine_info->file_name, homedir);
214
145
break;
215
146
}
216
147
engine_info = engine_info->next;
217
148
}
218
149
if(engine_info == NULL){
219
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
220
return false;
221
}
222
223
/* Create new GPGME "context" */
224
rc = gpgme_new(&(mc->ctx));
225
if(rc != GPG_ERR_NO_ERROR){
226
fprintf(stderr, "bad gpgme_new: %s: %s\n",
227
gpgme_strsource(rc), gpgme_strerror(rc));
228
return false;
229
}
230
231
if(not import_key(pubkey) or not import_key(seckey)){
232
return false;
233
}
234
235
return true;
236
}
237
238
/*
239
* Decrypt OpenPGP data.
240
* Returns -1 on error
241
*/
242
static ssize_t pgp_packet_decrypt(const mandos_context *mc,
243
const char *cryptotext,
244
size_t crypto_size,
245
char **plaintext){
246
gpgme_data_t dh_crypto, dh_plain;
247
gpgme_error_t rc;
248
ssize_t ret;
249
size_t plaintext_capacity = 0;
250
ssize_t plaintext_length = 0;
251
252
if(debug){
253
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
150
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
151
return -1;
254
152
}
255
153
256
154
/* Create new GPGME data buffer from memory cryptotext */
257
155
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
258
156
0);
259
if(rc != GPG_ERR_NO_ERROR){
157
if (rc != GPG_ERR_NO_ERROR){
260
158
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
261
159
gpgme_strsource(rc), gpgme_strerror(rc));
262
160
return -1;
264
162
265
163
/* Create new empty GPGME data buffer for the plaintext */
266
164
rc = gpgme_data_new(&dh_plain);
267
if(rc != GPG_ERR_NO_ERROR){
165
if (rc != GPG_ERR_NO_ERROR){
268
166
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
269
167
gpgme_strsource(rc), gpgme_strerror(rc));
270
168
gpgme_data_release(dh_crypto);
271
169
return -1;
272
170
}
273
171
172
/* Create new GPGME "context" */
173
rc = gpgme_new(&ctx);
174
if (rc != GPG_ERR_NO_ERROR){
175
fprintf(stderr, "bad gpgme_new: %s: %s\n",
176
gpgme_strsource(rc), gpgme_strerror(rc));
177
plaintext_length = -1;
178
goto decrypt_end;
179
}
180
274
181
/* Decrypt data from the cryptotext data buffer to the plaintext
275
182
data buffer */
276
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
277
if(rc != GPG_ERR_NO_ERROR){
183
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
184
if (rc != GPG_ERR_NO_ERROR){
278
185
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
279
186
gpgme_strsource(rc), gpgme_strerror(rc));
280
187
plaintext_length = -1;
281
if(debug){
282
gpgme_decrypt_result_t result;
283
result = gpgme_op_decrypt_result(mc->ctx);
284
if(result == NULL){
285
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
286
} else {
287
fprintf(stderr, "Unsupported algorithm: %s\n",
288
result->unsupported_algorithm);
289
fprintf(stderr, "Wrong key usage: %u\n",
290
result->wrong_key_usage);
291
if(result->file_name != NULL){
292
fprintf(stderr, "File name: %s\n", result->file_name);
293
}
294
gpgme_recipient_t recipient;
295
recipient = result->recipients;
296
if(recipient){
297
while(recipient != NULL){
298
fprintf(stderr, "Public key algorithm: %s\n",
299
gpgme_pubkey_algo_name(recipient->pubkey_algo));
300
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
301
fprintf(stderr, "Secret key available: %s\n",
302
recipient->status == GPG_ERR_NO_SECKEY
303
? "No" : "Yes");
304
recipient = recipient->next;
305
}
306
}
307
}
308
}
309
188
goto decrypt_end;
310
189
}
311
190
313
192
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
314
193
}
315
194
195
if (debug){
196
gpgme_decrypt_result_t result;
197
result = gpgme_op_decrypt_result(ctx);
198
if (result == NULL){
199
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
200
} else {
201
fprintf(stderr, "Unsupported algorithm: %s\n",
202
result->unsupported_algorithm);
203
fprintf(stderr, "Wrong key usage: %d\n",
204
result->wrong_key_usage);
205
if(result->file_name != NULL){
206
fprintf(stderr, "File name: %s\n", result->file_name);
207
}
208
gpgme_recipient_t recipient;
209
recipient = result->recipients;
210
if(recipient){
211
while(recipient != NULL){
212
fprintf(stderr, "Public key algorithm: %s\n",
213
gpgme_pubkey_algo_name(recipient->pubkey_algo));
214
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
215
fprintf(stderr, "Secret key available: %s\n",
216
recipient->status == GPG_ERR_NO_SECKEY
217
? "No" : "Yes");
218
recipient = recipient->next;
219
}
220
}
221
}
222
}
223
316
224
/* Seek back to the beginning of the GPGME plaintext data buffer */
317
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
318
perror("gpgme_data_seek");
225
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
226
perror("pgpme_data_seek");
319
227
plaintext_length = -1;
320
228
goto decrypt_end;
321
229
}
322
230
323
231
*plaintext = NULL;
324
232
while(true){
325
plaintext_capacity = adjustbuffer(plaintext,
326
(size_t)plaintext_length,
233
plaintext_capacity = adjustbuffer(plaintext, (size_t)plaintext_length,
327
234
plaintext_capacity);
328
if(plaintext_capacity == 0){
235
if (plaintext_capacity == 0){
329
236
perror("adjustbuffer");
330
237
plaintext_length = -1;
331
238
goto decrypt_end;
334
241
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
335
242
BUFFER_SIZE);
336
243
/* Print the data, if any */
337
if(ret == 0){
244
if (ret == 0){
338
245
/* EOF */
339
246
break;
340
247
}
345
252
}
346
253
plaintext_length += ret;
347
254
}
348
255
349
256
if(debug){
350
257
fprintf(stderr, "Decrypted password is: ");
351
258
for(ssize_t i = 0; i < plaintext_length; i++){
364
271
return plaintext_length;
365
272
}
366
273
367
static const char * safer_gnutls_strerror(int value) {
368
const char *ret = gnutls_strerror(value); /* Spurious warning from
369
-Wunreachable-code */
370
if(ret == NULL)
274
static const char * safer_gnutls_strerror (int value) {
275
const char *ret = gnutls_strerror (value);
276
if (ret == NULL)
371
277
ret = "(unknown)";
372
278
return ret;
373
279
}
379
285
}
380
286
381
287
static int init_gnutls_global(mandos_context *mc,
382
const char *pubkeyfilename,
383
const char *seckeyfilename){
288
const char *pubkeyfile,
289
const char *seckeyfile){
384
290
int ret;
385
291
386
292
if(debug){
387
293
fprintf(stderr, "Initializing GnuTLS\n");
388
294
}
389
390
ret = gnutls_global_init();
391
if(ret != GNUTLS_E_SUCCESS) {
392
fprintf(stderr, "GnuTLS global_init: %s\n",
393
safer_gnutls_strerror(ret));
295
296
if ((ret = gnutls_global_init ())
297
!= GNUTLS_E_SUCCESS) {
298
fprintf (stderr, "GnuTLS global_init: %s\n",
299
safer_gnutls_strerror(ret));
394
300
return -1;
395
301
}
396
302
397
if(debug){
303
if (debug){
398
304
/* "Use a log level over 10 to enable all debugging options."
399
305
* - GnuTLS manual
400
306
*/
403
309
}
404
310
405
311
/* OpenPGP credentials */
406
gnutls_certificate_allocate_credentials(&mc->cred);
407
if(ret != GNUTLS_E_SUCCESS){
408
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
409
* from
410
* -Wunreachable-code
411
*/
412
safer_gnutls_strerror(ret));
413
gnutls_global_deinit();
312
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
313
!= GNUTLS_E_SUCCESS) {
314
fprintf (stderr, "GnuTLS memory error: %s\n",
315
safer_gnutls_strerror(ret));
414
316
return -1;
415
317
}
416
318
417
319
if(debug){
418
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
419
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
420
seckeyfilename);
320
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
321
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
322
seckeyfile);
421
323
}
422
324
423
325
ret = gnutls_certificate_set_openpgp_key_file
424
(mc->cred, pubkeyfilename, seckeyfilename,
425
GNUTLS_OPENPGP_FMT_BASE64);
426
if(ret != GNUTLS_E_SUCCESS) {
326
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
327
if (ret != GNUTLS_E_SUCCESS) {
427
328
fprintf(stderr,
428
329
"Error[%d] while reading the OpenPGP key pair ('%s',"
429
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
430
fprintf(stderr, "The GnuTLS error is: %s\n",
330
" '%s')\n", ret, pubkeyfile, seckeyfile);
331
fprintf(stdout, "The GnuTLS error is: %s\n",
431
332
safer_gnutls_strerror(ret));
432
goto globalfail;
333
return -1;
433
334
}
434
335
435
336
/* GnuTLS server initialization */
436
337
ret = gnutls_dh_params_init(&mc->dh_params);
437
if(ret != GNUTLS_E_SUCCESS) {
438
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
439
" %s\n", safer_gnutls_strerror(ret));
440
goto globalfail;
338
if (ret != GNUTLS_E_SUCCESS) {
339
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
340
" %s\n", safer_gnutls_strerror(ret));
341
return -1;
441
342
}
442
343
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
443
if(ret != GNUTLS_E_SUCCESS) {
444
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
445
safer_gnutls_strerror(ret));
446
goto globalfail;
344
if (ret != GNUTLS_E_SUCCESS) {
345
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
346
safer_gnutls_strerror(ret));
347
return -1;
447
348
}
448
349
449
350
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
450
351
451
352
return 0;
452
453
globalfail:
454
455
gnutls_certificate_free_credentials(mc->cred);
456
gnutls_global_deinit();
457
gnutls_dh_params_deinit(mc->dh_params);
458
return -1;
459
353
}
460
354
461
static int init_gnutls_session(mandos_context *mc,
462
gnutls_session_t *session){
355
static int init_gnutls_session(mandos_context *mc, gnutls_session_t *session){
463
356
int ret;
464
357
/* GnuTLS session creation */
465
358
ret = gnutls_init(session, GNUTLS_SERVER);
466
if(ret != GNUTLS_E_SUCCESS){
359
if (ret != GNUTLS_E_SUCCESS){
467
360
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
468
361
safer_gnutls_strerror(ret));
469
362
}
471
364
{
472
365
const char *err;
473
366
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
474
if(ret != GNUTLS_E_SUCCESS) {
367
if (ret != GNUTLS_E_SUCCESS) {
475
368
fprintf(stderr, "Syntax error at: %s\n", err);
476
369
fprintf(stderr, "GnuTLS error: %s\n",
477
370
safer_gnutls_strerror(ret));
478
gnutls_deinit(*session);
479
371
return -1;
480
372
}
481
373
}
482
374
483
375
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
484
376
mc->cred);
485
if(ret != GNUTLS_E_SUCCESS) {
377
if (ret != GNUTLS_E_SUCCESS) {
486
378
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
487
379
safer_gnutls_strerror(ret));
488
gnutls_deinit(*session);
489
380
return -1;
490
381
}
491
382
492
383
/* ignore client certificate if any. */
493
gnutls_certificate_server_set_request(*session,
494
GNUTLS_CERT_IGNORE);
384
gnutls_certificate_server_set_request (*session,
385
GNUTLS_CERT_IGNORE);
495
386
496
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
387
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
497
388
498
389
return 0;
499
390
}
507
398
AvahiIfIndex if_index,
508
399
mandos_context *mc){
509
400
int ret, tcp_sd;
510
ssize_t sret;
511
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
401
struct sockaddr_in6 to;
512
402
char *buffer = NULL;
513
403
char *decrypted_buffer;
514
404
size_t buffer_length = 0;
518
408
int retval = 0;
519
409
char interface[IF_NAMESIZE];
520
410
gnutls_session_t session;
411
gnutls_dh_params_t dh_params;
521
412
522
ret = init_gnutls_session(mc, &session);
523
if(ret != 0){
413
ret = init_gnutls_session (mc, &session);
414
if (ret != 0){
524
415
return -1;
525
416
}
526
417
527
418
if(debug){
528
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
529
"\n", ip, port);
419
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
420
ip, port);
530
421
}
531
422
532
423
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
534
425
perror("socket");
535
426
return -1;
536
427
}
537
428
538
429
if(debug){
539
430
if(if_indextoname((unsigned int)if_index, interface) == NULL){
540
431
perror("if_indextoname");
543
434
fprintf(stderr, "Binding to interface %s\n", interface);
544
435
}
545
436
546
memset(&to, 0, sizeof(to));
547
to.in6.sin6_family = AF_INET6;
437
memset(&to,0,sizeof(to)); /* Spurious warning */
438
to.sin6_family = AF_INET6;
548
439
/* It would be nice to have a way to detect if we were passed an
549
440
IPv4 address here. Now we assume an IPv6 address. */
550
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
551
if(ret < 0 ){
441
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
442
if (ret < 0 ){
552
443
perror("inet_pton");
553
444
return -1;
554
445
}
556
447
fprintf(stderr, "Bad address: %s\n", ip);
557
448
return -1;
558
449
}
559
to.in6.sin6_port = htons(port); /* Spurious warnings from
560
-Wconversion and
561
-Wunreachable-code */
450
to.sin6_port = htons(port); /* Spurious warning */
562
451
563
to.in6.sin6_scope_id = (uint32_t)if_index;
452
to.sin6_scope_id = (uint32_t)if_index;
564
453
565
454
if(debug){
566
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
567
port);
455
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
568
456
char addrstr[INET6_ADDRSTRLEN] = "";
569
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
457
if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr,
570
458
sizeof(addrstr)) == NULL){
571
459
perror("inet_ntop");
572
460
} else {
576
464
}
577
465
}
578
466
579
ret = connect(tcp_sd, &to.in, sizeof(to));
580
if(ret < 0){
467
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
468
if (ret < 0){
581
469
perror("connect");
582
470
return -1;
583
471
}
584
472
585
473
const char *out = mandos_protocol_version;
586
474
written = 0;
587
while(true){
475
while (true){
588
476
size_t out_size = strlen(out);
589
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
477
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
590
478
out_size - written));
591
if(ret == -1){
479
if (ret == -1){
592
480
perror("write");
593
481
retval = -1;
594
482
goto mandos_end;
597
485
if(written < out_size){
598
486
continue;
599
487
} else {
600
if(out == mandos_protocol_version){
488
if (out == mandos_protocol_version){
601
489
written = 0;
602
490
out = "\r\n";
603
491
} else {
605
493
}
606
494
}
607
495
}
608
496
609
497
if(debug){
610
498
fprintf(stderr, "Establishing TLS session with %s\n", ip);
611
499
}
612
500
613
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
614
615
do{
616
ret = gnutls_handshake(session);
617
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
618
619
if(ret != GNUTLS_E_SUCCESS){
501
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
502
503
ret = gnutls_handshake (session);
504
505
if (ret != GNUTLS_E_SUCCESS){
620
506
if(debug){
621
507
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
622
gnutls_perror(ret);
508
gnutls_perror (ret);
623
509
}
624
510
retval = -1;
625
511
goto mandos_end;
631
517
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
632
518
ip);
633
519
}
634
520
635
521
while(true){
636
buffer_capacity = adjustbuffer(&buffer, buffer_length,
637
buffer_capacity);
638
if(buffer_capacity == 0){
522
buffer_capacity = adjustbuffer(&buffer, buffer_length, buffer_capacity);
523
if (buffer_capacity == 0){
639
524
perror("adjustbuffer");
640
525
retval = -1;
641
526
goto mandos_end;
642
527
}
643
528
644
sret = gnutls_record_recv(session, buffer+buffer_length,
645
BUFFER_SIZE);
646
if(sret == 0){
529
ret = gnutls_record_recv(session, buffer+buffer_length,
530
BUFFER_SIZE);
531
if (ret == 0){
647
532
break;
648
533
}
649
if(sret < 0){
650
switch(sret){
534
if (ret < 0){
535
switch(ret){
651
536
case GNUTLS_E_INTERRUPTED:
652
537
case GNUTLS_E_AGAIN:
653
538
break;
654
539
case GNUTLS_E_REHANDSHAKE:
655
do{
656
ret = gnutls_handshake(session);
657
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
658
if(ret < 0){
540
ret = gnutls_handshake (session);
541
if (ret < 0){
659
542
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
660
gnutls_perror(ret);
543
gnutls_perror (ret);
661
544
retval = -1;
662
545
goto mandos_end;
663
546
}
666
549
fprintf(stderr, "Unknown error while reading data from"
667
550
" encrypted session with Mandos server\n");
668
551
retval = -1;
669
gnutls_bye(session, GNUTLS_SHUT_RDWR);
552
gnutls_bye (session, GNUTLS_SHUT_RDWR);
670
553
goto mandos_end;
671
554
}
672
555
} else {
673
buffer_length += (size_t) sret;
556
buffer_length += (size_t) ret;
674
557
}
675
558
}
676
559
678
561
fprintf(stderr, "Closing TLS session\n");
679
562
}
680
563
681
gnutls_bye(session, GNUTLS_SHUT_RDWR);
564
gnutls_bye (session, GNUTLS_SHUT_RDWR);
682
565
683
if(buffer_length > 0){
684
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
566
if (buffer_length > 0){
567
decrypted_buffer_size = pgp_packet_decrypt(buffer,
685
568
buffer_length,
686
&decrypted_buffer);
687
if(decrypted_buffer_size >= 0){
569
&decrypted_buffer,
570
keydir);
571
if (decrypted_buffer_size >= 0){
688
572
written = 0;
689
573
while(written < (size_t) decrypted_buffer_size){
690
ret = (int)fwrite(decrypted_buffer + written, 1,
691
(size_t)decrypted_buffer_size - written,
692
stdout);
574
ret = (int)fwrite (decrypted_buffer + written, 1,
575
(size_t)decrypted_buffer_size - written,
576
stdout);
693
577
if(ret == 0 and ferror(stdout)){
694
578
if(debug){
695
579
fprintf(stderr, "Error writing encrypted data: %s\n",
704
588
} else {
705
589
retval = -1;
706
590
}
707
} else {
708
retval = -1;
709
591
}
710
592
711
593
/* Shutdown procedure */
712
594
713
595
mandos_end:
714
596
free(buffer);
715
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
716
if(ret == -1){
717
perror("close");
718
}
719
gnutls_deinit(session);
597
close(tcp_sd);
598
gnutls_deinit (session);
599
gnutls_certificate_free_credentials (mc->cred);
600
gnutls_global_deinit ();
720
601
return retval;
721
602
}
722
603
735
616
flags,
736
617
void* userdata) {
737
618
mandos_context *mc = userdata;
738
assert(r);
619
assert(r); /* Spurious warning */
739
620
740
621
/* Called whenever a service has been resolved successfully or
741
622
timed out */
742
623
743
switch(event) {
624
switch (event) {
744
625
default:
745
626
case AVAHI_RESOLVER_FAILURE:
746
627
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
753
634
char ip[AVAHI_ADDRESS_STR_MAX];
754
635
avahi_address_snprint(ip, sizeof(ip), address);
755
636
if(debug){
756
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
757
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
758
ip, (intmax_t)interface, port);
637
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
638
" port %d\n", name, host_name, ip, interface, port);
759
639
}
760
640
int ret = start_mandos_communication(ip, port, interface, mc);
761
if(ret == 0){
762
avahi_simple_poll_quit(mc->simple_poll);
641
if (ret == 0){
642
exit(EXIT_SUCCESS);
763
643
}
764
644
}
765
645
}
777
657
flags,
778
658
void* userdata) {
779
659
mandos_context *mc = userdata;
780
assert(b);
660
assert(b); /* Spurious warning */
781
661
782
662
/* Called whenever a new services becomes available on the LAN or
783
663
is removed from the LAN */
784
664
785
switch(event) {
665
switch (event) {
786
666
default:
787
667
case AVAHI_BROWSER_FAILURE:
788
668
797
677
the callback function is called the Avahi server will free the
798
678
resolver for us. */
799
679
800
if(!(avahi_s_service_resolver_new(mc->server, interface,
680
if (!(avahi_s_service_resolver_new(mc->server, interface,
801
681
protocol, name, type, domain,
802
682
AVAHI_PROTO_INET6, 0,
803
683
resolve_callback, mc)))
817
697
}
818
698
}
819
699
700
/* Combines file name and path and returns the malloced new
701
string. some sane checks could/should be added */
702
static const char *combinepath(const char *first, const char *second){
703
size_t f_len = strlen(first);
704
size_t s_len = strlen(second);
705
char *tmp = malloc(f_len + s_len + 2);
706
if (tmp == NULL){
707
return NULL;
708
}
709
if(f_len > 0){
710
memcpy(tmp, first, f_len); /* Spurious warning */
711
}
712
tmp[f_len] = '/';
713
if(s_len > 0){
714
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
715
}
716
tmp[f_len + 1 + s_len] = '\0';
717
return tmp;
718
}
719
720
820
721
int main(int argc, char *argv[]){
821
722
AvahiSServiceBrowser *sb = NULL;
822
723
int error;
823
724
int ret;
824
intmax_t tmpmax;
825
int numchars;
826
725
int exitcode = EXIT_SUCCESS;
827
726
const char *interface = "eth0";
828
727
struct ifreq network;
830
729
uid_t uid;
831
730
gid_t gid;
832
731
char *connect_to = NULL;
833
char tempdir[] = "/tmp/mandosXXXXXX";
834
732
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
835
const char *seckey = PATHDIR "/" SECKEY;
836
const char *pubkey = PATHDIR "/" PUBKEY;
837
733
const char *pubkeyfile = "pubkey.txt";
734
const char *seckeyfile = "seckey.txt";
838
735
mandos_context mc = { .simple_poll = NULL, .server = NULL,
839
.dh_bits = 1024, .priority = "SECURE256"
840
":!CTYPE-X.509:+CTYPE-OPENPGP" };
841
bool gnutls_initalized = false;
842
bool gpgme_initalized = false;
736
.dh_bits = 1024, .priority = "SECURE256"};
843
737
844
738
{
845
739
struct argp_option options[] = {
846
740
{ .name = "debug", .key = 128,
847
741
.doc = "Debug mode", .group = 3 },
848
742
{ .name = "connect", .key = 'c',
849
.arg = "ADDRESS:PORT",
850
.doc = "Connect directly to a specific Mandos server",
851
.group = 1 },
743
.arg = "IP",
744
.doc = "Connect directly to a sepcified mandos server", .group = 1 },
852
745
{ .name = "interface", .key = 'i',
853
.arg = "NAME",
854
.doc = "Interface that will be used to search for Mandos"
855
" servers",
856
.group = 1 },
746
.arg = "INTERFACE",
747
.doc = "Interface that Avahi will conntect through", .group = 1 },
748
{ .name = "keydir", .key = 'd',
749
.arg = "KEYDIR",
750
.doc = "Directory where the openpgp keyring is", .group = 1 },
857
751
{ .name = "seckey", .key = 's',
858
.arg = "FILE",
859
.doc = "OpenPGP secret key file base name",
860
.group = 1 },
752
.arg = "SECKEY",
753
.doc = "Secret openpgp key for gnutls authentication", .group = 1 },
861
754
{ .name = "pubkey", .key = 'p',
862
.arg = "FILE",
863
.doc = "OpenPGP public key file base name",
864
.group = 2 },
755
.arg = "PUBKEY",
756
.doc = "Public openpgp key for gnutls authentication", .group = 2 },
865
757
{ .name = "dh-bits", .key = 129,
866
758
.arg = "BITS",
867
.doc = "Bit length of the prime number used in the"
868
" Diffie-Hellman key exchange",
869
.group = 2 },
759
.doc = "dh-bits to use in gnutls communication", .group = 2 },
870
760
{ .name = "priority", .key = 130,
871
.arg = "STRING",
872
.doc = "GnuTLS priority string for the TLS handshake",
873
.group = 1 },
761
.arg = "PRIORITY",
762
.doc = "GNUTLS priority", .group = 1 },
874
763
{ .name = NULL }
875
764
};
765
876
766
877
error_t parse_opt(int key, char *arg,
878
struct argp_state *state) {
879
switch(key) {
880
case 128: /* --debug */
767
error_t parse_opt (int key, char *arg, struct argp_state *state) {
768
/* Get the INPUT argument from `argp_parse', which we know is a
769
pointer to our plugin list pointer. */
770
switch (key) {
771
case 128:
881
772
debug = true;
882
773
break;
883
case 'c': /* --connect */
774
case 'c':
884
775
connect_to = arg;
885
776
break;
886
case 'i': /* --interface */
777
case 'i':
887
778
interface = arg;
888
779
break;
889
case 's': /* --seckey */
890
seckey = arg;
891
break;
892
case 'p': /* --pubkey */
893
pubkey = arg;
894
break;
895
case 129: /* --dh-bits */
896
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
897
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
898
or arg[numchars] != '\0'){
899
fprintf(stderr, "Bad number of DH bits\n");
780
case 'd':
781
keydir = arg;
782
break;
783
case 's':
784
seckeyfile = arg;
785
break;
786
case 'p':
787
pubkeyfile = arg;
788
break;
789
case 129:
790
errno = 0;
791
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
792
if (errno){
793
perror("strtol");
900
794
exit(EXIT_FAILURE);
901
795
}
902
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
903
796
break;
904
case 130: /* --priority */
797
case 130:
905
798
mc.priority = arg;
906
799
break;
907
800
case ARGP_KEY_ARG:
908
argp_usage(state);
909
case ARGP_KEY_END:
801
argp_usage (state);
910
802
break;
803
case ARGP_KEY_END:
804
break;
911
805
default:
912
806
return ARGP_ERR_UNKNOWN;
913
807
}
914
808
return 0;
915
809
}
916
810
917
811
struct argp argp = { .options = options, .parser = parse_opt,
918
812
.args_doc = "",
919
.doc = "Mandos client -- Get and decrypt"
920
" passwords from a Mandos server" };
921
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
922
if(ret == ARGP_ERR_UNKNOWN){
923
fprintf(stderr, "Unknown error while parsing arguments\n");
924
exitcode = EXIT_FAILURE;
925
goto end;
926
}
927
}
928
929
/* If the interface is down, bring it up */
930
{
931
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
932
if(sd < 0) {
933
perror("socket");
934
exitcode = EXIT_FAILURE;
935
goto end;
936
}
937
strcpy(network.ifr_name, interface);
938
ret = ioctl(sd, SIOCGIFFLAGS, &network);
939
if(ret == -1){
940
perror("ioctl SIOCGIFFLAGS");
941
exitcode = EXIT_FAILURE;
942
goto end;
943
}
944
if((network.ifr_flags & IFF_UP) == 0){
945
network.ifr_flags |= IFF_UP;
946
ret = ioctl(sd, SIOCSIFFLAGS, &network);
947
if(ret == -1){
948
perror("ioctl SIOCSIFFLAGS");
949
exitcode = EXIT_FAILURE;
950
goto end;
951
}
952
}
953
ret = (int)TEMP_FAILURE_RETRY(close(sd));
954
if(ret == -1){
955
perror("close");
956
}
957
}
958
813
.doc = "Mandos client -- Get and decrypt passwords from mandos server" };
814
argp_parse (&argp, argc, argv, 0, 0, NULL);
815
}
816
817
pubkeyfile = combinepath(keydir, pubkeyfile);
818
if (pubkeyfile == NULL){
819
perror("combinepath");
820
exitcode = EXIT_FAILURE;
821
goto end;
822
}
823
824
seckeyfile = combinepath(keydir, seckeyfile);
825
if (seckeyfile == NULL){
826
perror("combinepath");
827
goto end;
828
}
829
830
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
831
if (ret == -1){
832
fprintf(stderr, "init_gnutls_global\n");
833
goto end;
834
}
835
959
836
uid = getuid();
960
837
gid = getgid();
961
838
962
839
ret = setuid(uid);
963
if(ret == -1){
840
if (ret == -1){
964
841
perror("setuid");
965
842
}
966
843
967
844
setgid(gid);
968
if(ret == -1){
845
if (ret == -1){
969
846
perror("setgid");
970
847
}
971
848
972
ret = init_gnutls_global(&mc, pubkey, seckey);
973
if(ret == -1){
974
fprintf(stderr, "init_gnutls_global failed\n");
975
exitcode = EXIT_FAILURE;
976
goto end;
977
} else {
978
gnutls_initalized = true;
979
}
980
981
if(mkdtemp(tempdir) == NULL){
982
perror("mkdtemp");
983
tempdir[0] = '\0';
984
goto end;
985
}
986
987
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
988
fprintf(stderr, "gpgme_initalized failed\n");
989
exitcode = EXIT_FAILURE;
990
goto end;
991
} else {
992
gpgme_initalized = true;
993
}
994
995
849
if_index = (AvahiIfIndex) if_nametoindex(interface);
996
850
if(if_index == 0){
997
851
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1007
861
exitcode = EXIT_FAILURE;
1008
862
goto end;
1009
863
}
1010
uint16_t port;
1011
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1012
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1013
or address[numchars+1] != '\0'){
1014
fprintf(stderr, "Bad port number\n");
864
errno = 0;
865
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
866
if(errno){
867
perror("Bad port number");
1015
868
exitcode = EXIT_FAILURE;
1016
869
goto end;
1017
870
}
1018
port = (uint16_t)tmpmax;
1019
871
*address = '\0';
1020
872
address = connect_to;
1021
873
ret = start_mandos_communication(address, port, if_index, &mc);
1027
879
goto end;
1028
880
}
1029
881
1030
if(not debug){
882
/* If the interface is down, bring it up */
883
{
884
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
885
if(sd < 0) {
886
perror("socket");
887
exitcode = EXIT_FAILURE;
888
goto end;
889
}
890
strcpy(network.ifr_name, interface); /* Spurious warning */
891
ret = ioctl(sd, SIOCGIFFLAGS, &network);
892
if(ret == -1){
893
perror("ioctl SIOCGIFFLAGS");
894
exitcode = EXIT_FAILURE;
895
goto end;
896
}
897
if((network.ifr_flags & IFF_UP) == 0){
898
network.ifr_flags |= IFF_UP;
899
ret = ioctl(sd, SIOCSIFFLAGS, &network);
900
if(ret == -1){
901
perror("ioctl SIOCSIFFLAGS");
902
exitcode = EXIT_FAILURE;
903
goto end;
904
}
905
}
906
close(sd);
907
}
908
909
if (not debug){
1031
910
avahi_set_log_function(empty_log);
1032
911
}
1033
912
1036
915
1037
916
/* Allocate main Avahi loop object */
1038
917
mc.simple_poll = avahi_simple_poll_new();
1039
if(mc.simple_poll == NULL) {
918
if (mc.simple_poll == NULL) {
1040
919
fprintf(stderr, "Avahi: Failed to create simple poll"
1041
920
" object.\n");
1042
921
exitcode = EXIT_FAILURE;
1043
922
goto end;
1044
923
}
1045
924
1046
925
{
1047
926
AvahiServerConfig config;
1048
927
/* Do not publish any local Zeroconf records */
1051
930
config.publish_addresses = 0;
1052
931
config.publish_workstation = 0;
1053
932
config.publish_domain = 0;
1054
933
1055
934
/* Allocate a new server */
1056
935
mc.server = avahi_server_new(avahi_simple_poll_get
1057
936
(mc.simple_poll), &config, NULL,
1058
937
NULL, &error);
1059
938
1060
939
/* Free the Avahi configuration data */
1061
940
avahi_server_config_free(&config);
1062
941
}
1063
942
1064
943
/* Check if creating the Avahi server object succeeded */
1065
if(mc.server == NULL) {
944
if (mc.server == NULL) {
1066
945
fprintf(stderr, "Failed to create Avahi server: %s\n",
1067
946
avahi_strerror(error));
1068
947
exitcode = EXIT_FAILURE;
1074
953
AVAHI_PROTO_INET6,
1075
954
"_mandos._tcp", NULL, 0,
1076
955
browse_callback, &mc);
1077
if(sb == NULL) {
956
if (sb == NULL) {
1078
957
fprintf(stderr, "Failed to create service browser: %s\n",
1079
958
avahi_strerror(avahi_server_errno(mc.server)));
1080
959
exitcode = EXIT_FAILURE;
1082
961
}
1083
962
1084
963
/* Run the main loop */
1085
1086
if(debug){
964
965
if (debug){
1087
966
fprintf(stderr, "Starting Avahi loop search\n");
1088
967
}
1089
968
1090
969
avahi_simple_poll_loop(mc.simple_poll);
1091
970
1092
971
end:
1093
1094
if(debug){
972
973
if (debug){
1095
974
fprintf(stderr, "%s exiting\n", argv[0]);
1096
975
}
1097
976
1098
977
/* Cleanup things */
1099
if(sb != NULL)
978
if (sb != NULL)
1100
979
avahi_s_service_browser_free(sb);
1101
980
1102
if(mc.server != NULL)
981
if (mc.server != NULL)
1103
982
avahi_server_free(mc.server);
1104
1105
if(mc.simple_poll != NULL)
983
984
if (mc.simple_poll != NULL)
1106
985
avahi_simple_poll_free(mc.simple_poll);
1107
1108
if(gnutls_initalized){
1109
gnutls_certificate_free_credentials(mc.cred);
1110
gnutls_global_deinit();
1111
gnutls_dh_params_deinit(mc.dh_params);
1112
}
1113
1114
if(gpgme_initalized){
1115
gpgme_release(mc.ctx);
1116
}
1117
1118
/* Removes the temp directory used by GPGME */
1119
if(tempdir[0] != '\0'){
1120
DIR *d;
1121
struct dirent *direntry;
1122
d = opendir(tempdir);
1123
if(d == NULL){
1124
if(errno != ENOENT){
1125
perror("opendir");
1126
}
1127
} else {
1128
while(true){
1129
direntry = readdir(d);
1130
if(direntry == NULL){
1131
break;
1132
}
1133
if(direntry->d_type == DT_REG){
1134
char *fullname = NULL;
1135
ret = asprintf(&fullname, "%s/%s", tempdir,
1136
direntry->d_name);
1137
if(ret < 0){
1138
perror("asprintf");
1139
continue;
1140
}
1141
ret = unlink(fullname);
1142
if(ret == -1){
1143
fprintf(stderr, "unlink(\"%s\"): %s",
1144
fullname, strerror(errno));
1145
}
1146
free(fullname);
1147
}
1148
}
1149
closedir(d);
1150
}
1151
ret = rmdir(tempdir);
1152
if(ret == -1 and errno != ENOENT){
1153
perror("rmdir");
1154
}
1155
}
1156
986
free(pubkeyfile);
987
free(seckeyfile);
988
1157
989
return exitcode;
1158
990
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0