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- Committer: Teddy Hogeborn
- Date: 2009-01-27 00:07:26 UTC
- Revision ID: teddy@fukt.bsnet.se-20090127000726-4cafcfy35g8kh2b8
* INSTALL (Prerequisites/Mandos Server): Added "PyGObject".
- files added:
- .bzr-builddeb
- debian
- debian/po
- files removed:
- ca.pem
- files renamed:
- server.py => mandos
- server.conf => mandos.conf
- plugbasedclient.c => plugin-runner.c
- plugins.d/mandosclient.c => plugins.d/mandos-client.c
- plugins.d/passprompt.c => plugins.d/password-prompt.c
- files modified:
- Makefile
added
removed
plugins.d/mandos-client.c
1
1
/* -*- coding: utf-8 -*- */
2
2
/*
3
* Mandos client - get and decrypt data from a Mandos server
3
* Mandos-client - get and decrypt data from a Mandos server
4
4
*
5
5
* This program is partly derived from an example program for an Avahi
6
6
* service browser, downloaded from
9
9
* "browse_callback", and parts of "main".
10
10
*
11
11
* Everything else is
12
* Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
12
* Copyright © 2008,2009 Teddy Hogeborn
13
* Copyright © 2008,2009 Björn Påhlsson
13
14
*
14
15
* This program is free software: you can redistribute it and/or
15
16
* modify it under the terms of the GNU General Public License as
32
33
#define _LARGEFILE_SOURCE
33
34
#define _FILE_OFFSET_BITS 64
34
35
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
36
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
36
37
37
#include <stdio.h>
38
#include <assert.h>
39
#include <stdlib.h>
40
#include <time.h>
41
#include <net/if.h> /* if_nametoindex */
42
#include <sys/ioctl.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
43
SIOCSIFFLAGS */
38
#include <stdio.h> /* fprintf(), stderr, fwrite(),
39
stdout, ferror(), sscanf(),
40
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() */
44
65
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
45
SIOCSIFFLAGS */
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 */
46
78
79
/* Avahi */
80
/* All Avahi types, constants and functions
81
Avahi*, avahi_*,
82
AVAHI_* */
47
83
#include <avahi-core/core.h>
48
84
#include <avahi-core/lookup.h>
49
85
#include <avahi-core/log.h>
51
87
#include <avahi-common/malloc.h>
52
88
#include <avahi-common/error.h>
53
89
54
/* Mandos client part */
55
#include <sys/types.h> /* socket(), inet_pton() */
56
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
57
struct in6_addr, inet_pton() */
58
#include <gnutls/gnutls.h> /* All GnuTLS stuff */
59
#include <gnutls/openpgp.h> /* GnuTLS with openpgp stuff */
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 */
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 */
68
99
69
100
/* GPGME */
70
#include <errno.h> /* perror() */
71
#include <gpgme.h>
72
73
/* getopt_long */
74
#include <getopt.h>
101
#include <gpgme.h> /* All GPGME types, constants and
102
functions:
103
gpgme_*
104
GPGME_PROTOCOL_OpenPGP,
105
GPG_ERR_NO_* */
75
106
76
107
#define BUFFER_SIZE 256
77
108
78
static const char *keydir = "/conf/conf.d/mandos";
79
static const char *pubkeyfile = "pubkey.txt";
80
static const char *seckeyfile = "seckey.txt";
109
#define PATHDIR "/conf/conf.d/mandos"
110
#define SECKEY "seckey.txt"
111
#define PUBKEY "pubkey.txt"
81
112
82
113
bool debug = false;
83
84
const char mandos_protocol_version[] = "1";
85
86
/* Used for passing in values through all the callback functions */
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 */
87
119
typedef struct {
88
120
AvahiSimplePoll *simple_poll;
89
121
AvahiServer *server;
90
122
gnutls_certificate_credentials_t cred;
91
123
unsigned int dh_bits;
124
gnutls_dh_params_t dh_params;
92
125
const char *priority;
126
gpgme_ctx_t ctx;
93
127
} mandos_context;
94
128
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
*/
95
134
size_t adjustbuffer(char **buffer, size_t buffer_length,
96
135
size_t buffer_capacity){
97
if (buffer_length + BUFFER_SIZE > buffer_capacity){
136
if(buffer_length + BUFFER_SIZE > buffer_capacity){
98
137
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
99
if (buffer == NULL){
138
if(buffer == NULL){
100
139
return 0;
101
140
}
102
141
buffer_capacity += BUFFER_SIZE;
105
144
}
106
145
107
146
/*
108
* Decrypt OpenPGP data using keyrings in HOMEDIR.
109
* Returns -1 on error
147
* Initialize GPGME.
110
148
*/
111
static ssize_t pgp_packet_decrypt (const char *cryptotext,
112
size_t crypto_size,
113
char **plaintext,
114
const char *homedir){
115
gpgme_data_t dh_crypto, dh_plain;
116
gpgme_ctx_t ctx;
149
static bool init_gpgme(mandos_context *mc, const char *seckey,
150
const char *pubkey, const char *tempdir){
151
int ret;
117
152
gpgme_error_t rc;
118
ssize_t ret;
119
size_t plaintext_capacity = 0;
120
ssize_t plaintext_length = 0;
121
153
gpgme_engine_info_t engine_info;
122
154
123
if (debug){
124
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
155
156
/*
157
* Helper function to insert pub and seckey to the enigne keyring.
158
*/
159
bool import_key(const char *filename){
160
int fd;
161
gpgme_data_t pgp_data;
162
163
fd = (int)TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
164
if(fd == -1){
165
perror("open");
166
return false;
167
}
168
169
rc = gpgme_data_new_from_fd(&pgp_data, fd);
170
if(rc != GPG_ERR_NO_ERROR){
171
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
172
gpgme_strsource(rc), gpgme_strerror(rc));
173
return false;
174
}
175
176
rc = gpgme_op_import(mc->ctx, pgp_data);
177
if(rc != GPG_ERR_NO_ERROR){
178
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
179
gpgme_strsource(rc), gpgme_strerror(rc));
180
return false;
181
}
182
183
ret = (int)TEMP_FAILURE_RETRY(close(fd));
184
if(ret == -1){
185
perror("close");
186
}
187
gpgme_data_release(pgp_data);
188
return true;
189
}
190
191
if(debug){
192
fprintf(stderr, "Initialize gpgme\n");
125
193
}
126
194
127
195
/* Init GPGME */
128
196
gpgme_check_version(NULL);
129
197
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
130
if (rc != GPG_ERR_NO_ERROR){
198
if(rc != GPG_ERR_NO_ERROR){
131
199
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
132
200
gpgme_strsource(rc), gpgme_strerror(rc));
133
return -1;
201
return false;
134
202
}
135
203
136
/* Set GPGME home directory for the OpenPGP engine only */
137
rc = gpgme_get_engine_info (&engine_info);
138
if (rc != GPG_ERR_NO_ERROR){
204
/* Set GPGME home directory for the OpenPGP engine only */
205
rc = gpgme_get_engine_info(&engine_info);
206
if(rc != GPG_ERR_NO_ERROR){
139
207
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
140
208
gpgme_strsource(rc), gpgme_strerror(rc));
141
return -1;
209
return false;
142
210
}
143
211
while(engine_info != NULL){
144
212
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
145
213
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
146
engine_info->file_name, homedir);
214
engine_info->file_name, tempdir);
147
215
break;
148
216
}
149
217
engine_info = engine_info->next;
150
218
}
151
219
if(engine_info == NULL){
152
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
153
return -1;
220
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
221
return false;
222
}
223
224
/* Create new GPGME "context" */
225
rc = gpgme_new(&(mc->ctx));
226
if(rc != GPG_ERR_NO_ERROR){
227
fprintf(stderr, "bad gpgme_new: %s: %s\n",
228
gpgme_strsource(rc), gpgme_strerror(rc));
229
return false;
230
}
231
232
if(not import_key(pubkey) or not import_key(seckey)){
233
return false;
234
}
235
236
return true;
237
}
238
239
/*
240
* Decrypt OpenPGP data.
241
* Returns -1 on error
242
*/
243
static ssize_t pgp_packet_decrypt(const mandos_context *mc,
244
const char *cryptotext,
245
size_t crypto_size,
246
char **plaintext){
247
gpgme_data_t dh_crypto, dh_plain;
248
gpgme_error_t rc;
249
ssize_t ret;
250
size_t plaintext_capacity = 0;
251
ssize_t plaintext_length = 0;
252
253
if(debug){
254
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
154
255
}
155
256
156
257
/* Create new GPGME data buffer from memory cryptotext */
157
258
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
158
259
0);
159
if (rc != GPG_ERR_NO_ERROR){
260
if(rc != GPG_ERR_NO_ERROR){
160
261
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
161
262
gpgme_strsource(rc), gpgme_strerror(rc));
162
263
return -1;
164
265
165
266
/* Create new empty GPGME data buffer for the plaintext */
166
267
rc = gpgme_data_new(&dh_plain);
167
if (rc != GPG_ERR_NO_ERROR){
268
if(rc != GPG_ERR_NO_ERROR){
168
269
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
169
270
gpgme_strsource(rc), gpgme_strerror(rc));
170
271
gpgme_data_release(dh_crypto);
171
272
return -1;
172
273
}
173
274
174
/* Create new GPGME "context" */
175
rc = gpgme_new(&ctx);
176
if (rc != GPG_ERR_NO_ERROR){
177
fprintf(stderr, "bad gpgme_new: %s: %s\n",
178
gpgme_strsource(rc), gpgme_strerror(rc));
179
plaintext_length = -1;
180
goto decrypt_end;
181
}
182
183
275
/* Decrypt data from the cryptotext data buffer to the plaintext
184
276
data buffer */
185
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
186
if (rc != GPG_ERR_NO_ERROR){
277
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
278
if(rc != GPG_ERR_NO_ERROR){
187
279
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
188
280
gpgme_strsource(rc), gpgme_strerror(rc));
189
281
plaintext_length = -1;
282
if(debug){
283
gpgme_decrypt_result_t result;
284
result = gpgme_op_decrypt_result(mc->ctx);
285
if(result == NULL){
286
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
287
} else {
288
fprintf(stderr, "Unsupported algorithm: %s\n",
289
result->unsupported_algorithm);
290
fprintf(stderr, "Wrong key usage: %u\n",
291
result->wrong_key_usage);
292
if(result->file_name != NULL){
293
fprintf(stderr, "File name: %s\n", result->file_name);
294
}
295
gpgme_recipient_t recipient;
296
recipient = result->recipients;
297
if(recipient){
298
while(recipient != NULL){
299
fprintf(stderr, "Public key algorithm: %s\n",
300
gpgme_pubkey_algo_name(recipient->pubkey_algo));
301
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
302
fprintf(stderr, "Secret key available: %s\n",
303
recipient->status == GPG_ERR_NO_SECKEY
304
? "No" : "Yes");
305
recipient = recipient->next;
306
}
307
}
308
}
309
}
190
310
goto decrypt_end;
191
311
}
192
312
194
314
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
195
315
}
196
316
197
if (debug){
198
gpgme_decrypt_result_t result;
199
result = gpgme_op_decrypt_result(ctx);
200
if (result == NULL){
201
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
202
} else {
203
fprintf(stderr, "Unsupported algorithm: %s\n",
204
result->unsupported_algorithm);
205
fprintf(stderr, "Wrong key usage: %d\n",
206
result->wrong_key_usage);
207
if(result->file_name != NULL){
208
fprintf(stderr, "File name: %s\n", result->file_name);
209
}
210
gpgme_recipient_t recipient;
211
recipient = result->recipients;
212
if(recipient){
213
while(recipient != NULL){
214
fprintf(stderr, "Public key algorithm: %s\n",
215
gpgme_pubkey_algo_name(recipient->pubkey_algo));
216
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
217
fprintf(stderr, "Secret key available: %s\n",
218
recipient->status == GPG_ERR_NO_SECKEY
219
? "No" : "Yes");
220
recipient = recipient->next;
221
}
222
}
223
}
224
}
225
226
317
/* Seek back to the beginning of the GPGME plaintext data buffer */
227
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
228
perror("pgpme_data_seek");
318
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
319
perror("gpgme_data_seek");
229
320
plaintext_length = -1;
230
321
goto decrypt_end;
231
322
}
232
323
233
324
*plaintext = NULL;
234
325
while(true){
235
plaintext_capacity = adjustbuffer(plaintext, (size_t)plaintext_length,
326
plaintext_capacity = adjustbuffer(plaintext,
327
(size_t)plaintext_length,
236
328
plaintext_capacity);
237
if (plaintext_capacity == 0){
329
if(plaintext_capacity == 0){
238
330
perror("adjustbuffer");
239
331
plaintext_length = -1;
240
332
goto decrypt_end;
243
335
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
244
336
BUFFER_SIZE);
245
337
/* Print the data, if any */
246
if (ret == 0){
338
if(ret == 0){
247
339
/* EOF */
248
340
break;
249
341
}
254
346
}
255
347
plaintext_length += ret;
256
348
}
257
349
258
350
if(debug){
259
351
fprintf(stderr, "Decrypted password is: ");
260
352
for(ssize_t i = 0; i < plaintext_length; i++){
273
365
return plaintext_length;
274
366
}
275
367
276
static const char * safer_gnutls_strerror (int value) {
277
const char *ret = gnutls_strerror (value);
278
if (ret == NULL)
368
static const char * safer_gnutls_strerror(int value) {
369
const char *ret = gnutls_strerror(value); /* Spurious warning from
370
-Wunreachable-code */
371
if(ret == NULL)
279
372
ret = "(unknown)";
280
373
return ret;
281
374
}
286
379
fprintf(stderr, "GnuTLS: %s", string);
287
380
}
288
381
289
static int initgnutls(mandos_context *mc, gnutls_session_t *session,
290
gnutls_dh_params_t *dh_params){
382
static int init_gnutls_global(mandos_context *mc,
383
const char *pubkeyfilename,
384
const char *seckeyfilename){
291
385
int ret;
292
386
293
387
if(debug){
294
388
fprintf(stderr, "Initializing GnuTLS\n");
295
389
}
296
297
if ((ret = gnutls_global_init ())
298
!= GNUTLS_E_SUCCESS) {
299
fprintf (stderr, "GnuTLS global_init: %s\n",
300
safer_gnutls_strerror(ret));
390
391
ret = gnutls_global_init();
392
if(ret != GNUTLS_E_SUCCESS) {
393
fprintf(stderr, "GnuTLS global_init: %s\n",
394
safer_gnutls_strerror(ret));
301
395
return -1;
302
396
}
303
397
304
if (debug){
398
if(debug){
305
399
/* "Use a log level over 10 to enable all debugging options."
306
400
* - GnuTLS manual
307
401
*/
310
404
}
311
405
312
406
/* OpenPGP credentials */
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));
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();
317
415
return -1;
318
416
}
319
417
320
418
if(debug){
321
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
322
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
323
seckeyfile);
419
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
420
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
421
seckeyfilename);
324
422
}
325
423
326
424
ret = gnutls_certificate_set_openpgp_key_file
327
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
328
if (ret != GNUTLS_E_SUCCESS) {
425
(mc->cred, pubkeyfilename, seckeyfilename,
426
GNUTLS_OPENPGP_FMT_BASE64);
427
if(ret != GNUTLS_E_SUCCESS) {
329
428
fprintf(stderr,
330
429
"Error[%d] while reading the OpenPGP key pair ('%s',"
331
" '%s')\n", ret, pubkeyfile, seckeyfile);
332
fprintf(stdout, "The GnuTLS error is: %s\n",
430
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
431
fprintf(stderr, "The GnuTLS error is: %s\n",
333
432
safer_gnutls_strerror(ret));
334
return -1;
433
goto globalfail;
335
434
}
336
435
337
436
/* GnuTLS server initialization */
338
ret = gnutls_dh_params_init(dh_params);
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;
343
}
344
ret = gnutls_dh_params_generate2(*dh_params, mc->dh_bits);
345
if (ret != GNUTLS_E_SUCCESS) {
346
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
347
safer_gnutls_strerror(ret));
348
return -1;
349
}
350
351
gnutls_certificate_set_dh_params(mc->cred, *dh_params);
352
437
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;
442
}
443
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;
448
}
449
450
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
451
452
return 0;
453
454
globalfail:
455
456
gnutls_certificate_free_credentials(mc->cred);
457
gnutls_global_deinit();
458
gnutls_dh_params_deinit(mc->dh_params);
459
return -1;
460
}
461
462
static int init_gnutls_session(mandos_context *mc,
463
gnutls_session_t *session){
464
int ret;
353
465
/* GnuTLS session creation */
354
466
ret = gnutls_init(session, GNUTLS_SERVER);
355
if (ret != GNUTLS_E_SUCCESS){
467
if(ret != GNUTLS_E_SUCCESS){
356
468
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
357
469
safer_gnutls_strerror(ret));
358
470
}
360
472
{
361
473
const char *err;
362
474
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
363
if (ret != GNUTLS_E_SUCCESS) {
475
if(ret != GNUTLS_E_SUCCESS) {
364
476
fprintf(stderr, "Syntax error at: %s\n", err);
365
477
fprintf(stderr, "GnuTLS error: %s\n",
366
478
safer_gnutls_strerror(ret));
479
gnutls_deinit(*session);
367
480
return -1;
368
481
}
369
482
}
370
483
371
484
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
372
485
mc->cred);
373
if (ret != GNUTLS_E_SUCCESS) {
486
if(ret != GNUTLS_E_SUCCESS) {
374
487
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
375
488
safer_gnutls_strerror(ret));
489
gnutls_deinit(*session);
376
490
return -1;
377
491
}
378
492
379
493
/* ignore client certificate if any. */
380
gnutls_certificate_server_set_request (*session,
381
GNUTLS_CERT_IGNORE);
494
gnutls_certificate_server_set_request(*session,
495
GNUTLS_CERT_IGNORE);
382
496
383
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
497
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
384
498
385
499
return 0;
386
500
}
394
508
AvahiIfIndex if_index,
395
509
mandos_context *mc){
396
510
int ret, tcp_sd;
397
struct sockaddr_in6 to;
511
ssize_t sret;
512
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
398
513
char *buffer = NULL;
399
514
char *decrypted_buffer;
400
515
size_t buffer_length = 0;
404
519
int retval = 0;
405
520
char interface[IF_NAMESIZE];
406
521
gnutls_session_t session;
407
gnutls_dh_params_t dh_params;
408
522
409
ret = initgnutls (mc, &session, &dh_params);
410
if (ret != 0){
523
ret = init_gnutls_session(mc, &session);
524
if(ret != 0){
411
525
return -1;
412
526
}
413
527
414
528
if(debug){
415
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
416
ip, port);
529
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
530
"\n", ip, port);
417
531
}
418
532
419
533
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
421
535
perror("socket");
422
536
return -1;
423
537
}
424
538
425
539
if(debug){
426
540
if(if_indextoname((unsigned int)if_index, interface) == NULL){
427
541
perror("if_indextoname");
430
544
fprintf(stderr, "Binding to interface %s\n", interface);
431
545
}
432
546
433
memset(&to,0,sizeof(to)); /* Spurious warning */
434
to.sin6_family = AF_INET6;
547
memset(&to, 0, sizeof(to));
548
to.in6.sin6_family = AF_INET6;
435
549
/* It would be nice to have a way to detect if we were passed an
436
550
IPv4 address here. Now we assume an IPv6 address. */
437
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
438
if (ret < 0 ){
551
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
552
if(ret < 0 ){
439
553
perror("inet_pton");
440
554
return -1;
441
555
}
443
557
fprintf(stderr, "Bad address: %s\n", ip);
444
558
return -1;
445
559
}
446
to.sin6_port = htons(port); /* Spurious warning */
560
to.in6.sin6_port = htons(port); /* Spurious warnings from
561
-Wconversion and
562
-Wunreachable-code */
447
563
448
to.sin6_scope_id = (uint32_t)if_index;
564
to.in6.sin6_scope_id = (uint32_t)if_index;
449
565
450
566
if(debug){
451
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
567
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
568
port);
452
569
char addrstr[INET6_ADDRSTRLEN] = "";
453
if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr,
570
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
454
571
sizeof(addrstr)) == NULL){
455
572
perror("inet_ntop");
456
573
} else {
460
577
}
461
578
}
462
579
463
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
464
if (ret < 0){
580
ret = connect(tcp_sd, &to.in, sizeof(to));
581
if(ret < 0){
465
582
perror("connect");
466
583
return -1;
467
584
}
468
585
469
586
const char *out = mandos_protocol_version;
470
587
written = 0;
471
while (true){
588
while(true){
472
589
size_t out_size = strlen(out);
473
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
590
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
474
591
out_size - written));
475
if (ret == -1){
592
if(ret == -1){
476
593
perror("write");
477
594
retval = -1;
478
595
goto mandos_end;
481
598
if(written < out_size){
482
599
continue;
483
600
} else {
484
if (out == mandos_protocol_version){
601
if(out == mandos_protocol_version){
485
602
written = 0;
486
603
out = "\r\n";
487
604
} else {
489
606
}
490
607
}
491
608
}
492
609
493
610
if(debug){
494
611
fprintf(stderr, "Establishing TLS session with %s\n", ip);
495
612
}
496
613
497
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
498
499
ret = gnutls_handshake (session);
500
501
if (ret != GNUTLS_E_SUCCESS){
614
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
615
616
do{
617
ret = gnutls_handshake(session);
618
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
619
620
if(ret != GNUTLS_E_SUCCESS){
502
621
if(debug){
503
622
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
504
gnutls_perror (ret);
623
gnutls_perror(ret);
505
624
}
506
625
retval = -1;
507
626
goto mandos_end;
513
632
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
514
633
ip);
515
634
}
516
635
517
636
while(true){
518
buffer_capacity = adjustbuffer(&buffer, buffer_length, buffer_capacity);
519
if (buffer_capacity == 0){
637
buffer_capacity = adjustbuffer(&buffer, buffer_length,
638
buffer_capacity);
639
if(buffer_capacity == 0){
520
640
perror("adjustbuffer");
521
641
retval = -1;
522
642
goto mandos_end;
523
643
}
524
644
525
ret = gnutls_record_recv(session, buffer+buffer_length,
526
BUFFER_SIZE);
527
if (ret == 0){
645
sret = gnutls_record_recv(session, buffer+buffer_length,
646
BUFFER_SIZE);
647
if(sret == 0){
528
648
break;
529
649
}
530
if (ret < 0){
531
switch(ret){
650
if(sret < 0){
651
switch(sret){
532
652
case GNUTLS_E_INTERRUPTED:
533
653
case GNUTLS_E_AGAIN:
534
654
break;
535
655
case GNUTLS_E_REHANDSHAKE:
536
ret = gnutls_handshake (session);
537
if (ret < 0){
656
do{
657
ret = gnutls_handshake(session);
658
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
659
if(ret < 0){
538
660
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
539
gnutls_perror (ret);
661
gnutls_perror(ret);
540
662
retval = -1;
541
663
goto mandos_end;
542
664
}
545
667
fprintf(stderr, "Unknown error while reading data from"
546
668
" encrypted session with Mandos server\n");
547
669
retval = -1;
548
gnutls_bye (session, GNUTLS_SHUT_RDWR);
670
gnutls_bye(session, GNUTLS_SHUT_RDWR);
549
671
goto mandos_end;
550
672
}
551
673
} else {
552
buffer_length += (size_t) ret;
674
buffer_length += (size_t) sret;
553
675
}
554
676
}
555
677
557
679
fprintf(stderr, "Closing TLS session\n");
558
680
}
559
681
560
gnutls_bye (session, GNUTLS_SHUT_RDWR);
682
gnutls_bye(session, GNUTLS_SHUT_RDWR);
561
683
562
if (buffer_length > 0){
563
decrypted_buffer_size = pgp_packet_decrypt(buffer,
684
if(buffer_length > 0){
685
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
564
686
buffer_length,
565
&decrypted_buffer,
566
keydir);
567
if (decrypted_buffer_size >= 0){
687
&decrypted_buffer);
688
if(decrypted_buffer_size >= 0){
568
689
written = 0;
569
690
while(written < (size_t) decrypted_buffer_size){
570
ret = (int)fwrite (decrypted_buffer + written, 1,
571
(size_t)decrypted_buffer_size - written,
572
stdout);
691
ret = (int)fwrite(decrypted_buffer + written, 1,
692
(size_t)decrypted_buffer_size - written,
693
stdout);
573
694
if(ret == 0 and ferror(stdout)){
574
695
if(debug){
575
696
fprintf(stderr, "Error writing encrypted data: %s\n",
584
705
} else {
585
706
retval = -1;
586
707
}
708
} else {
709
retval = -1;
587
710
}
588
711
589
712
/* Shutdown procedure */
590
713
591
714
mandos_end:
592
715
free(buffer);
593
close(tcp_sd);
594
gnutls_deinit (session);
595
gnutls_certificate_free_credentials (mc->cred);
596
gnutls_global_deinit ();
716
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
717
if(ret == -1){
718
perror("close");
719
}
720
gnutls_deinit(session);
597
721
return retval;
598
722
}
599
723
612
736
flags,
613
737
void* userdata) {
614
738
mandos_context *mc = userdata;
615
assert(r); /* Spurious warning */
739
assert(r);
616
740
617
741
/* Called whenever a service has been resolved successfully or
618
742
timed out */
619
743
620
switch (event) {
744
switch(event) {
621
745
default:
622
746
case AVAHI_RESOLVER_FAILURE:
623
747
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
630
754
char ip[AVAHI_ADDRESS_STR_MAX];
631
755
avahi_address_snprint(ip, sizeof(ip), address);
632
756
if(debug){
633
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
634
" port %d\n", name, host_name, ip, interface, port);
757
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
758
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
759
ip, (intmax_t)interface, port);
635
760
}
636
761
int ret = start_mandos_communication(ip, port, interface, mc);
637
if (ret == 0){
638
exit(EXIT_SUCCESS);
762
if(ret == 0){
763
avahi_simple_poll_quit(mc->simple_poll);
639
764
}
640
765
}
641
766
}
653
778
flags,
654
779
void* userdata) {
655
780
mandos_context *mc = userdata;
656
assert(b); /* Spurious warning */
781
assert(b);
657
782
658
783
/* Called whenever a new services becomes available on the LAN or
659
784
is removed from the LAN */
660
785
661
switch (event) {
786
switch(event) {
662
787
default:
663
788
case AVAHI_BROWSER_FAILURE:
664
789
673
798
the callback function is called the Avahi server will free the
674
799
resolver for us. */
675
800
676
if (!(avahi_s_service_resolver_new(mc->server, interface,
801
if(!(avahi_s_service_resolver_new(mc->server, interface,
677
802
protocol, name, type, domain,
678
803
AVAHI_PROTO_INET6, 0,
679
804
resolve_callback, mc)))
693
818
}
694
819
}
695
820
696
/* Combines file name and path and returns the malloced new
697
string. some sane checks could/should be added */
698
static const char *combinepath(const char *first, const char *second){
699
size_t f_len = strlen(first);
700
size_t s_len = strlen(second);
701
char *tmp = malloc(f_len + s_len + 2);
702
if (tmp == NULL){
703
return NULL;
704
}
705
if(f_len > 0){
706
memcpy(tmp, first, f_len); /* Spurious warning */
707
}
708
tmp[f_len] = '/';
709
if(s_len > 0){
710
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
711
}
712
tmp[f_len + 1 + s_len] = '\0';
713
return tmp;
714
}
715
716
717
821
int main(int argc, char *argv[]){
718
822
AvahiSServiceBrowser *sb = NULL;
719
823
int error;
720
824
int ret;
825
intmax_t tmpmax;
826
int numchars;
721
827
int exitcode = EXIT_SUCCESS;
722
828
const char *interface = "eth0";
723
829
struct ifreq network;
724
830
int sd;
831
uid_t uid;
832
gid_t gid;
725
833
char *connect_to = NULL;
834
char tempdir[] = "/tmp/mandosXXXXXX";
726
835
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
836
const char *seckey = PATHDIR "/" SECKEY;
837
const char *pubkey = PATHDIR "/" PUBKEY;
838
727
839
mandos_context mc = { .simple_poll = NULL, .server = NULL,
728
.dh_bits = 1024, .priority = "SECURE256"};
840
.dh_bits = 1024, .priority = "SECURE256"
841
":!CTYPE-X.509:+CTYPE-OPENPGP" };
842
bool gnutls_initialized = false;
843
bool gpgme_initialized = false;
729
844
730
845
{
731
/* Temporary int to get the address of for getopt_long */
732
int debug_int = debug ? 1 : 0;
733
while (true){
734
struct option long_options[] = {
735
{"debug", no_argument, &debug_int, 1},
736
{"connect", required_argument, NULL, 'c'},
737
{"interface", required_argument, NULL, 'i'},
738
{"keydir", required_argument, NULL, 'd'},
739
{"seckey", required_argument, NULL, 's'},
740
{"pubkey", required_argument, NULL, 'p'},
741
{"dh-bits", required_argument, NULL, 'D'},
742
{"priority", required_argument, NULL, 'P'},
743
{0, 0, 0, 0} };
744
745
int option_index = 0;
746
ret = getopt_long (argc, argv, "i:", long_options,
747
&option_index);
748
749
if (ret == -1){
750
break;
751
}
752
753
switch(ret){
754
case 0:
755
break;
756
case 'i':
757
interface = optarg;
758
break;
759
case 'c':
760
connect_to = optarg;
761
break;
762
case 'd':
763
keydir = optarg;
764
break;
765
case 'p':
766
pubkeyfile = optarg;
767
break;
768
case 's':
769
seckeyfile = optarg;
770
break;
771
case 'D':
772
errno = 0;
773
mc.dh_bits = (unsigned int) strtol(optarg, NULL, 10);
774
if (errno){
775
perror("strtol");
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");
776
901
exit(EXIT_FAILURE);
777
902
}
778
break;
779
case 'P':
780
mc.priority = optarg;
781
break;
782
case '?':
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;
783
912
default:
784
/* getopt_long() has already printed a message about the
785
unrcognized option, so just exit. */
786
exit(EXIT_FAILURE);
787
}
788
}
789
/* Set the global debug flag from the temporary int */
790
debug = debug_int ? true : false;
791
}
792
793
pubkeyfile = combinepath(keydir, pubkeyfile);
794
if (pubkeyfile == NULL){
795
perror("combinepath");
796
exitcode = EXIT_FAILURE;
797
goto end;
798
}
799
800
seckeyfile = combinepath(keydir, seckeyfile);
801
if (seckeyfile == NULL){
802
perror("combinepath");
803
goto end;
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
960
uid = getuid();
961
gid = getgid();
962
963
ret = setuid(uid);
964
if(ret == -1){
965
perror("setuid");
966
}
967
968
setgid(gid);
969
if(ret == -1){
970
perror("setgid");
971
}
972
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;
804
994
}
805
995
806
996
if_index = (AvahiIfIndex) if_nametoindex(interface);
815
1005
char *address = strrchr(connect_to, ':');
816
1006
if(address == NULL){
817
1007
fprintf(stderr, "No colon in address\n");
818
exit(EXIT_FAILURE);
819
}
820
errno = 0;
821
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
822
if(errno){
823
perror("Bad port number");
824
exit(EXIT_FAILURE);
825
}
1008
exitcode = EXIT_FAILURE;
1009
goto end;
1010
}
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");
1016
exitcode = EXIT_FAILURE;
1017
goto end;
1018
}
1019
port = (uint16_t)tmpmax;
826
1020
*address = '\0';
827
1021
address = connect_to;
828
1022
ret = start_mandos_communication(address, port, if_index, &mc);
829
1023
if(ret < 0){
830
exit(EXIT_FAILURE);
1024
exitcode = EXIT_FAILURE;
831
1025
} else {
832
exit(EXIT_SUCCESS);
833
}
834
}
835
836
/* If the interface is down, bring it up */
837
{
838
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
839
if(sd < 0) {
840
perror("socket");
841
exitcode = EXIT_FAILURE;
842
goto end;
843
}
844
strcpy(network.ifr_name, interface); /* Spurious warning */
845
ret = ioctl(sd, SIOCGIFFLAGS, &network);
846
if(ret == -1){
847
perror("ioctl SIOCGIFFLAGS");
848
exitcode = EXIT_FAILURE;
849
goto end;
850
}
851
if((network.ifr_flags & IFF_UP) == 0){
852
network.ifr_flags |= IFF_UP;
853
ret = ioctl(sd, SIOCSIFFLAGS, &network);
854
if(ret == -1){
855
perror("ioctl SIOCSIFFLAGS");
856
exitcode = EXIT_FAILURE;
857
goto end;
858
}
859
}
860
close(sd);
861
}
862
863
if (not debug){
1026
exitcode = EXIT_SUCCESS;
1027
}
1028
goto end;
1029
}
1030
1031
if(not debug){
864
1032
avahi_set_log_function(empty_log);
865
1033
}
866
1034
869
1037
870
1038
/* Allocate main Avahi loop object */
871
1039
mc.simple_poll = avahi_simple_poll_new();
872
if (mc.simple_poll == NULL) {
1040
if(mc.simple_poll == NULL) {
873
1041
fprintf(stderr, "Avahi: Failed to create simple poll"
874
1042
" object.\n");
875
1043
exitcode = EXIT_FAILURE;
876
1044
goto end;
877
1045
}
878
1046
879
1047
{
880
1048
AvahiServerConfig config;
881
1049
/* Do not publish any local Zeroconf records */
884
1052
config.publish_addresses = 0;
885
1053
config.publish_workstation = 0;
886
1054
config.publish_domain = 0;
887
1055
888
1056
/* Allocate a new server */
889
1057
mc.server = avahi_server_new(avahi_simple_poll_get
890
1058
(mc.simple_poll), &config, NULL,
891
1059
NULL, &error);
892
1060
893
1061
/* Free the Avahi configuration data */
894
1062
avahi_server_config_free(&config);
895
1063
}
896
1064
897
1065
/* Check if creating the Avahi server object succeeded */
898
if (mc.server == NULL) {
1066
if(mc.server == NULL) {
899
1067
fprintf(stderr, "Failed to create Avahi server: %s\n",
900
1068
avahi_strerror(error));
901
1069
exitcode = EXIT_FAILURE;
907
1075
AVAHI_PROTO_INET6,
908
1076
"_mandos._tcp", NULL, 0,
909
1077
browse_callback, &mc);
910
if (sb == NULL) {
1078
if(sb == NULL) {
911
1079
fprintf(stderr, "Failed to create service browser: %s\n",
912
1080
avahi_strerror(avahi_server_errno(mc.server)));
913
1081
exitcode = EXIT_FAILURE;
915
1083
}
916
1084
917
1085
/* Run the main loop */
918
919
if (debug){
1086
1087
if(debug){
920
1088
fprintf(stderr, "Starting Avahi loop search\n");
921
1089
}
922
1090
923
1091
avahi_simple_poll_loop(mc.simple_poll);
924
1092
925
1093
end:
926
927
if (debug){
1094
1095
if(debug){
928
1096
fprintf(stderr, "%s exiting\n", argv[0]);
929
1097
}
930
1098
931
1099
/* Cleanup things */
932
if (sb != NULL)
1100
if(sb != NULL)
933
1101
avahi_s_service_browser_free(sb);
934
1102
935
if (mc.server != NULL)
1103
if(mc.server != NULL)
936
1104
avahi_server_free(mc.server);
937
938
if (mc.simple_poll != NULL)
1105
1106
if(mc.simple_poll != NULL)
939
1107
avahi_simple_poll_free(mc.simple_poll);
940
free(pubkeyfile);
941
free(seckeyfile);
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
}
942
1162
943
1163
return exitcode;
944
1164
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0