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- Committer: Teddy Hogeborn
- Date: 2009-01-31 10:33:17 UTC
- mfrom: (24.1.129 mandos)
- Revision ID: teddy@fukt.bsnet.se-20090131103317-wzqvyr532sjcjt7u
Merge from Björn:
* mandos-ctl: New option "--remove-client". Only default to listing
clients if no clients were given on the command line.
* plugins.d/mandos-client.c: Lower kernel log level while bringing up
network interface. New option "--delay"
to control the maximum delay to wait for
running interface.
* plugins.d/mandos-client.xml (SYNOPSIS, OPTIONS): New option
"--delay".
* mandos-ctl: New option "--remove-client". Only default to listing
clients if no clients were given on the command line.
* plugins.d/mandos-client.c: Lower kernel log level while bringing up
network interface. New option "--delay"
to control the maximum delay to wait for
running interface.
* plugins.d/mandos-client.xml (SYNOPSIS, OPTIONS): New option
"--delay".
- files added:
- .bzr-builddeb
- debian
- debian/po
- files removed:
- network-protocol.txt
- files renamed:
- mandos-client.c => plugin-runner.c
- mandos-client.xml => plugin-runner.xml
- plugins.d/password-request.c => plugins.d/mandos-client.c
- plugins.d/password-request.xml => plugins.d/mandos-client.xml
- 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> /* fprintf(), stderr, fwrite(), stdout,
38
ferror() */
38
#include <stdio.h> /* fprintf(), stderr, fwrite(),
39
stdout, ferror(), sscanf(),
40
remove() */
39
41
#include <stdint.h> /* uint16_t, uint32_t */
40
42
#include <stddef.h> /* NULL, size_t, ssize_t */
41
43
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
42
44
srand() */
43
45
#include <stdbool.h> /* bool, true */
44
46
#include <string.h> /* memset(), strcmp(), strlen(),
45
strerror(), memcpy(), strcpy() */
47
strerror(), asprintf(), strcpy() */
46
48
#include <sys/ioctl.h> /* ioctl */
47
#include <net/if.h> /* ifreq, SIOCGIFFLAGS, SIOCSIFFLAGS,
48
IFF_UP */
49
49
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
50
50
sockaddr_in6, PF_INET6,
51
51
SOCK_STREAM, INET6_ADDRSTRLEN,
52
uid_t, gid_t */
53
#include <inttypes.h> /* PRIu16 */
52
uid_t, gid_t, open(), opendir(),
53
DIR */
54
#include <sys/stat.h> /* open() */
54
55
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
55
56
struct in6_addr, inet_pton(),
56
57
connect() */
58
#include <fcntl.h> /* open() */
59
#include <dirent.h> /* opendir(), struct dirent, readdir()
60
*/
61
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
57
62
#include <assert.h> /* assert() */
58
63
#include <errno.h> /* perror(), errno */
59
#include <time.h> /* time() */
64
#include <time.h> /* nanosleep(), time() */
60
65
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
61
66
SIOCSIFFLAGS, if_indextoname(),
62
67
if_nametoindex(), IF_NAMESIZE */
68
#include <netinet/in.h>
63
69
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
64
70
getuid(), getgid(), setuid(),
65
71
setgid() */
66
#include <netinet/in.h>
67
72
#include <arpa/inet.h> /* inet_pton(), htons */
68
#include <iso646.h> /* not, and */
73
#include <iso646.h> /* not, and, or */
69
74
#include <argp.h> /* struct argp_option, error_t, struct
70
75
argp_state, struct argp,
71
76
argp_parse(), ARGP_KEY_ARG,
72
77
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
78
#include <sys/klog.h> /* klogctl() */
73
79
74
80
/* Avahi */
75
81
/* All Avahi types, constants and functions
83
89
#include <avahi-common/error.h>
84
90
85
91
/* GnuTLS */
86
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and functions
92
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
93
functions:
87
94
gnutls_*
88
95
init_gnutls_session(),
89
96
GNUTLS_* */
90
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
97
#include <gnutls/openpgp.h>
98
/* gnutls_certificate_set_openpgp_key_file(),
91
99
GNUTLS_OPENPGP_FMT_BASE64 */
92
100
93
101
/* GPGME */
94
#include <gpgme.h> /* All GPGME types, constants and functions
102
#include <gpgme.h> /* All GPGME types, constants and
103
functions:
95
104
gpgme_*
96
105
GPGME_PROTOCOL_OpenPGP,
97
106
GPG_ERR_NO_* */
98
107
99
108
#define BUFFER_SIZE 256
100
109
110
#define PATHDIR "/conf/conf.d/mandos"
111
#define SECKEY "seckey.txt"
112
#define PUBKEY "pubkey.txt"
113
101
114
bool debug = false;
102
static const char *keydir = "/conf/conf.d/mandos";
103
115
static const char mandos_protocol_version[] = "1";
104
const char *argp_program_version = "password-request 1.0";
116
const char *argp_program_version = "mandos-client " VERSION;
105
117
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
106
118
107
119
/* Used for passing in values through the Avahi callback functions */
112
124
unsigned int dh_bits;
113
125
gnutls_dh_params_t dh_params;
114
126
const char *priority;
127
gpgme_ctx_t ctx;
115
128
} mandos_context;
116
129
117
130
/*
121
134
*/
122
135
size_t adjustbuffer(char **buffer, size_t buffer_length,
123
136
size_t buffer_capacity){
124
if (buffer_length + BUFFER_SIZE > buffer_capacity){
137
if(buffer_length + BUFFER_SIZE > buffer_capacity){
125
138
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
126
if (buffer == NULL){
139
if(buffer == NULL){
127
140
return 0;
128
141
}
129
142
buffer_capacity += BUFFER_SIZE;
132
145
}
133
146
134
147
/*
135
* Decrypt OpenPGP data using keyrings in HOMEDIR.
136
* Returns -1 on error
148
* Initialize GPGME.
137
149
*/
138
static ssize_t pgp_packet_decrypt (const char *cryptotext,
139
size_t crypto_size,
140
char **plaintext,
141
const char *homedir){
142
gpgme_data_t dh_crypto, dh_plain;
143
gpgme_ctx_t ctx;
150
static bool init_gpgme(mandos_context *mc, const char *seckey,
151
const char *pubkey, const char *tempdir){
152
int ret;
144
153
gpgme_error_t rc;
145
ssize_t ret;
146
size_t plaintext_capacity = 0;
147
ssize_t plaintext_length = 0;
148
154
gpgme_engine_info_t engine_info;
149
155
150
if (debug){
151
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
156
157
/*
158
* Helper function to insert pub and seckey to the engine keyring.
159
*/
160
bool import_key(const char *filename){
161
int fd;
162
gpgme_data_t pgp_data;
163
164
fd = (int)TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
165
if(fd == -1){
166
perror("open");
167
return false;
168
}
169
170
rc = gpgme_data_new_from_fd(&pgp_data, fd);
171
if(rc != GPG_ERR_NO_ERROR){
172
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
173
gpgme_strsource(rc), gpgme_strerror(rc));
174
return false;
175
}
176
177
rc = gpgme_op_import(mc->ctx, pgp_data);
178
if(rc != GPG_ERR_NO_ERROR){
179
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
180
gpgme_strsource(rc), gpgme_strerror(rc));
181
return false;
182
}
183
184
ret = (int)TEMP_FAILURE_RETRY(close(fd));
185
if(ret == -1){
186
perror("close");
187
}
188
gpgme_data_release(pgp_data);
189
return true;
190
}
191
192
if(debug){
193
fprintf(stderr, "Initialize gpgme\n");
152
194
}
153
195
154
196
/* Init GPGME */
155
197
gpgme_check_version(NULL);
156
198
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
157
if (rc != GPG_ERR_NO_ERROR){
199
if(rc != GPG_ERR_NO_ERROR){
158
200
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
159
201
gpgme_strsource(rc), gpgme_strerror(rc));
160
return -1;
202
return false;
161
203
}
162
204
163
/* Set GPGME home directory for the OpenPGP engine only */
164
rc = gpgme_get_engine_info (&engine_info);
165
if (rc != GPG_ERR_NO_ERROR){
205
/* Set GPGME home directory for the OpenPGP engine only */
206
rc = gpgme_get_engine_info(&engine_info);
207
if(rc != GPG_ERR_NO_ERROR){
166
208
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
167
209
gpgme_strsource(rc), gpgme_strerror(rc));
168
return -1;
210
return false;
169
211
}
170
212
while(engine_info != NULL){
171
213
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
172
214
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
173
engine_info->file_name, homedir);
215
engine_info->file_name, tempdir);
174
216
break;
175
217
}
176
218
engine_info = engine_info->next;
177
219
}
178
220
if(engine_info == NULL){
179
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
180
return -1;
221
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
222
return false;
223
}
224
225
/* Create new GPGME "context" */
226
rc = gpgme_new(&(mc->ctx));
227
if(rc != GPG_ERR_NO_ERROR){
228
fprintf(stderr, "bad gpgme_new: %s: %s\n",
229
gpgme_strsource(rc), gpgme_strerror(rc));
230
return false;
231
}
232
233
if(not import_key(pubkey) or not import_key(seckey)){
234
return false;
235
}
236
237
return true;
238
}
239
240
/*
241
* Decrypt OpenPGP data.
242
* Returns -1 on error
243
*/
244
static ssize_t pgp_packet_decrypt(const mandos_context *mc,
245
const char *cryptotext,
246
size_t crypto_size,
247
char **plaintext){
248
gpgme_data_t dh_crypto, dh_plain;
249
gpgme_error_t rc;
250
ssize_t ret;
251
size_t plaintext_capacity = 0;
252
ssize_t plaintext_length = 0;
253
254
if(debug){
255
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
181
256
}
182
257
183
258
/* Create new GPGME data buffer from memory cryptotext */
184
259
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
185
260
0);
186
if (rc != GPG_ERR_NO_ERROR){
261
if(rc != GPG_ERR_NO_ERROR){
187
262
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
188
263
gpgme_strsource(rc), gpgme_strerror(rc));
189
264
return -1;
191
266
192
267
/* Create new empty GPGME data buffer for the plaintext */
193
268
rc = gpgme_data_new(&dh_plain);
194
if (rc != GPG_ERR_NO_ERROR){
269
if(rc != GPG_ERR_NO_ERROR){
195
270
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
196
271
gpgme_strsource(rc), gpgme_strerror(rc));
197
272
gpgme_data_release(dh_crypto);
198
273
return -1;
199
274
}
200
275
201
/* Create new GPGME "context" */
202
rc = gpgme_new(&ctx);
203
if (rc != GPG_ERR_NO_ERROR){
204
fprintf(stderr, "bad gpgme_new: %s: %s\n",
205
gpgme_strsource(rc), gpgme_strerror(rc));
206
plaintext_length = -1;
207
goto decrypt_end;
208
}
209
210
276
/* Decrypt data from the cryptotext data buffer to the plaintext
211
277
data buffer */
212
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
213
if (rc != GPG_ERR_NO_ERROR){
278
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
279
if(rc != GPG_ERR_NO_ERROR){
214
280
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
215
281
gpgme_strsource(rc), gpgme_strerror(rc));
216
282
plaintext_length = -1;
283
if(debug){
284
gpgme_decrypt_result_t result;
285
result = gpgme_op_decrypt_result(mc->ctx);
286
if(result == NULL){
287
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
288
} else {
289
fprintf(stderr, "Unsupported algorithm: %s\n",
290
result->unsupported_algorithm);
291
fprintf(stderr, "Wrong key usage: %u\n",
292
result->wrong_key_usage);
293
if(result->file_name != NULL){
294
fprintf(stderr, "File name: %s\n", result->file_name);
295
}
296
gpgme_recipient_t recipient;
297
recipient = result->recipients;
298
if(recipient){
299
while(recipient != NULL){
300
fprintf(stderr, "Public key algorithm: %s\n",
301
gpgme_pubkey_algo_name(recipient->pubkey_algo));
302
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
303
fprintf(stderr, "Secret key available: %s\n",
304
recipient->status == GPG_ERR_NO_SECKEY
305
? "No" : "Yes");
306
recipient = recipient->next;
307
}
308
}
309
}
310
}
217
311
goto decrypt_end;
218
312
}
219
313
221
315
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
222
316
}
223
317
224
if (debug){
225
gpgme_decrypt_result_t result;
226
result = gpgme_op_decrypt_result(ctx);
227
if (result == NULL){
228
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
229
} else {
230
fprintf(stderr, "Unsupported algorithm: %s\n",
231
result->unsupported_algorithm);
232
fprintf(stderr, "Wrong key usage: %u\n",
233
result->wrong_key_usage);
234
if(result->file_name != NULL){
235
fprintf(stderr, "File name: %s\n", result->file_name);
236
}
237
gpgme_recipient_t recipient;
238
recipient = result->recipients;
239
if(recipient){
240
while(recipient != NULL){
241
fprintf(stderr, "Public key algorithm: %s\n",
242
gpgme_pubkey_algo_name(recipient->pubkey_algo));
243
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
244
fprintf(stderr, "Secret key available: %s\n",
245
recipient->status == GPG_ERR_NO_SECKEY
246
? "No" : "Yes");
247
recipient = recipient->next;
248
}
249
}
250
}
251
}
252
253
318
/* Seek back to the beginning of the GPGME plaintext data buffer */
254
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
255
perror("pgpme_data_seek");
319
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
320
perror("gpgme_data_seek");
256
321
plaintext_length = -1;
257
322
goto decrypt_end;
258
323
}
262
327
plaintext_capacity = adjustbuffer(plaintext,
263
328
(size_t)plaintext_length,
264
329
plaintext_capacity);
265
if (plaintext_capacity == 0){
330
if(plaintext_capacity == 0){
266
331
perror("adjustbuffer");
267
332
plaintext_length = -1;
268
333
goto decrypt_end;
271
336
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
272
337
BUFFER_SIZE);
273
338
/* Print the data, if any */
274
if (ret == 0){
339
if(ret == 0){
275
340
/* EOF */
276
341
break;
277
342
}
282
347
}
283
348
plaintext_length += ret;
284
349
}
285
350
286
351
if(debug){
287
352
fprintf(stderr, "Decrypted password is: ");
288
353
for(ssize_t i = 0; i < plaintext_length; i++){
301
366
return plaintext_length;
302
367
}
303
368
304
static const char * safer_gnutls_strerror (int value) {
305
const char *ret = gnutls_strerror (value);
306
if (ret == NULL)
369
static const char * safer_gnutls_strerror(int value) {
370
const char *ret = gnutls_strerror(value); /* Spurious warning from
371
-Wunreachable-code */
372
if(ret == NULL)
307
373
ret = "(unknown)";
308
374
return ret;
309
375
}
315
381
}
316
382
317
383
static int init_gnutls_global(mandos_context *mc,
318
const char *pubkeyfile,
319
const char *seckeyfile){
384
const char *pubkeyfilename,
385
const char *seckeyfilename){
320
386
int ret;
321
387
322
388
if(debug){
324
390
}
325
391
326
392
ret = gnutls_global_init();
327
if (ret != GNUTLS_E_SUCCESS) {
328
fprintf (stderr, "GnuTLS global_init: %s\n",
329
safer_gnutls_strerror(ret));
393
if(ret != GNUTLS_E_SUCCESS) {
394
fprintf(stderr, "GnuTLS global_init: %s\n",
395
safer_gnutls_strerror(ret));
330
396
return -1;
331
397
}
332
398
333
if (debug){
399
if(debug){
334
400
/* "Use a log level over 10 to enable all debugging options."
335
401
* - GnuTLS manual
336
402
*/
340
406
341
407
/* OpenPGP credentials */
342
408
gnutls_certificate_allocate_credentials(&mc->cred);
343
if (ret != GNUTLS_E_SUCCESS){
344
fprintf (stderr, "GnuTLS memory error: %s\n",
345
safer_gnutls_strerror(ret));
346
gnutls_global_deinit ();
409
if(ret != GNUTLS_E_SUCCESS){
410
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
411
* from
412
* -Wunreachable-code
413
*/
414
safer_gnutls_strerror(ret));
415
gnutls_global_deinit();
347
416
return -1;
348
417
}
349
418
350
419
if(debug){
351
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
352
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
353
seckeyfile);
420
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
421
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
422
seckeyfilename);
354
423
}
355
424
356
425
ret = gnutls_certificate_set_openpgp_key_file
357
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
358
if (ret != GNUTLS_E_SUCCESS) {
426
(mc->cred, pubkeyfilename, seckeyfilename,
427
GNUTLS_OPENPGP_FMT_BASE64);
428
if(ret != GNUTLS_E_SUCCESS) {
359
429
fprintf(stderr,
360
430
"Error[%d] while reading the OpenPGP key pair ('%s',"
361
" '%s')\n", ret, pubkeyfile, seckeyfile);
362
fprintf(stdout, "The GnuTLS error is: %s\n",
431
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
432
fprintf(stderr, "The GnuTLS error is: %s\n",
363
433
safer_gnutls_strerror(ret));
364
434
goto globalfail;
365
435
}
366
436
367
437
/* GnuTLS server initialization */
368
438
ret = gnutls_dh_params_init(&mc->dh_params);
369
if (ret != GNUTLS_E_SUCCESS) {
370
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
371
" %s\n", safer_gnutls_strerror(ret));
439
if(ret != GNUTLS_E_SUCCESS) {
440
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
441
" %s\n", safer_gnutls_strerror(ret));
372
442
goto globalfail;
373
443
}
374
444
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
375
if (ret != GNUTLS_E_SUCCESS) {
376
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
377
safer_gnutls_strerror(ret));
445
if(ret != GNUTLS_E_SUCCESS) {
446
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
447
safer_gnutls_strerror(ret));
378
448
goto globalfail;
379
449
}
380
450
381
451
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
382
452
383
453
return 0;
384
454
385
455
globalfail:
386
456
387
457
gnutls_certificate_free_credentials(mc->cred);
388
458
gnutls_global_deinit();
459
gnutls_dh_params_deinit(mc->dh_params);
389
460
return -1;
390
391
461
}
392
462
393
463
static int init_gnutls_session(mandos_context *mc,
395
465
int ret;
396
466
/* GnuTLS session creation */
397
467
ret = gnutls_init(session, GNUTLS_SERVER);
398
if (ret != GNUTLS_E_SUCCESS){
468
if(ret != GNUTLS_E_SUCCESS){
399
469
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
400
470
safer_gnutls_strerror(ret));
401
471
}
403
473
{
404
474
const char *err;
405
475
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
406
if (ret != GNUTLS_E_SUCCESS) {
476
if(ret != GNUTLS_E_SUCCESS) {
407
477
fprintf(stderr, "Syntax error at: %s\n", err);
408
478
fprintf(stderr, "GnuTLS error: %s\n",
409
479
safer_gnutls_strerror(ret));
410
gnutls_deinit (*session);
480
gnutls_deinit(*session);
411
481
return -1;
412
482
}
413
483
}
414
484
415
485
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
416
486
mc->cred);
417
if (ret != GNUTLS_E_SUCCESS) {
487
if(ret != GNUTLS_E_SUCCESS) {
418
488
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
419
489
safer_gnutls_strerror(ret));
420
gnutls_deinit (*session);
490
gnutls_deinit(*session);
421
491
return -1;
422
492
}
423
493
424
494
/* ignore client certificate if any. */
425
gnutls_certificate_server_set_request (*session,
426
GNUTLS_CERT_IGNORE);
495
gnutls_certificate_server_set_request(*session,
496
GNUTLS_CERT_IGNORE);
427
497
428
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
498
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
429
499
430
500
return 0;
431
501
}
439
509
AvahiIfIndex if_index,
440
510
mandos_context *mc){
441
511
int ret, tcp_sd;
512
ssize_t sret;
442
513
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
443
514
char *buffer = NULL;
444
515
char *decrypted_buffer;
450
521
char interface[IF_NAMESIZE];
451
522
gnutls_session_t session;
452
523
453
ret = init_gnutls_session (mc, &session);
454
if (ret != 0){
524
ret = init_gnutls_session(mc, &session);
525
if(ret != 0){
455
526
return -1;
456
527
}
457
528
465
536
perror("socket");
466
537
return -1;
467
538
}
468
539
469
540
if(debug){
470
541
if(if_indextoname((unsigned int)if_index, interface) == NULL){
471
542
perror("if_indextoname");
474
545
fprintf(stderr, "Binding to interface %s\n", interface);
475
546
}
476
547
477
memset(&to,0,sizeof(to)); /* Spurious warning */
548
memset(&to, 0, sizeof(to));
478
549
to.in6.sin6_family = AF_INET6;
479
550
/* It would be nice to have a way to detect if we were passed an
480
551
IPv4 address here. Now we assume an IPv6 address. */
481
552
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
482
if (ret < 0 ){
553
if(ret < 0 ){
483
554
perror("inet_pton");
484
555
return -1;
485
556
}
487
558
fprintf(stderr, "Bad address: %s\n", ip);
488
559
return -1;
489
560
}
490
to.in6.sin6_port = htons(port); /* Spurious warning */
561
to.in6.sin6_port = htons(port); /* Spurious warnings from
562
-Wconversion and
563
-Wunreachable-code */
491
564
492
565
to.in6.sin6_scope_id = (uint32_t)if_index;
493
566
506
579
}
507
580
508
581
ret = connect(tcp_sd, &to.in, sizeof(to));
509
if (ret < 0){
582
if(ret < 0){
510
583
perror("connect");
511
584
return -1;
512
585
}
513
586
514
587
const char *out = mandos_protocol_version;
515
588
written = 0;
516
while (true){
589
while(true){
517
590
size_t out_size = strlen(out);
518
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
591
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
519
592
out_size - written));
520
if (ret == -1){
593
if(ret == -1){
521
594
perror("write");
522
595
retval = -1;
523
596
goto mandos_end;
526
599
if(written < out_size){
527
600
continue;
528
601
} else {
529
if (out == mandos_protocol_version){
602
if(out == mandos_protocol_version){
530
603
written = 0;
531
604
out = "\r\n";
532
605
} else {
534
607
}
535
608
}
536
609
}
537
610
538
611
if(debug){
539
612
fprintf(stderr, "Establishing TLS session with %s\n", ip);
540
613
}
541
614
542
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
543
615
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
616
544
617
do{
545
ret = gnutls_handshake (session);
618
ret = gnutls_handshake(session);
546
619
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
547
620
548
if (ret != GNUTLS_E_SUCCESS){
621
if(ret != GNUTLS_E_SUCCESS){
549
622
if(debug){
550
623
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
551
gnutls_perror (ret);
624
gnutls_perror(ret);
552
625
}
553
626
retval = -1;
554
627
goto mandos_end;
560
633
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
561
634
ip);
562
635
}
563
636
564
637
while(true){
565
638
buffer_capacity = adjustbuffer(&buffer, buffer_length,
566
639
buffer_capacity);
567
if (buffer_capacity == 0){
640
if(buffer_capacity == 0){
568
641
perror("adjustbuffer");
569
642
retval = -1;
570
643
goto mandos_end;
571
644
}
572
645
573
ret = gnutls_record_recv(session, buffer+buffer_length,
574
BUFFER_SIZE);
575
if (ret == 0){
646
sret = gnutls_record_recv(session, buffer+buffer_length,
647
BUFFER_SIZE);
648
if(sret == 0){
576
649
break;
577
650
}
578
if (ret < 0){
579
switch(ret){
651
if(sret < 0){
652
switch(sret){
580
653
case GNUTLS_E_INTERRUPTED:
581
654
case GNUTLS_E_AGAIN:
582
655
break;
583
656
case GNUTLS_E_REHANDSHAKE:
584
657
do{
585
ret = gnutls_handshake (session);
658
ret = gnutls_handshake(session);
586
659
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
587
if (ret < 0){
660
if(ret < 0){
588
661
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
589
gnutls_perror (ret);
662
gnutls_perror(ret);
590
663
retval = -1;
591
664
goto mandos_end;
592
665
}
595
668
fprintf(stderr, "Unknown error while reading data from"
596
669
" encrypted session with Mandos server\n");
597
670
retval = -1;
598
gnutls_bye (session, GNUTLS_SHUT_RDWR);
671
gnutls_bye(session, GNUTLS_SHUT_RDWR);
599
672
goto mandos_end;
600
673
}
601
674
} else {
602
buffer_length += (size_t) ret;
675
buffer_length += (size_t) sret;
603
676
}
604
677
}
605
678
607
680
fprintf(stderr, "Closing TLS session\n");
608
681
}
609
682
610
gnutls_bye (session, GNUTLS_SHUT_RDWR);
683
gnutls_bye(session, GNUTLS_SHUT_RDWR);
611
684
612
if (buffer_length > 0){
613
decrypted_buffer_size = pgp_packet_decrypt(buffer,
685
if(buffer_length > 0){
686
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
614
687
buffer_length,
615
&decrypted_buffer,
616
keydir);
617
if (decrypted_buffer_size >= 0){
688
&decrypted_buffer);
689
if(decrypted_buffer_size >= 0){
618
690
written = 0;
619
691
while(written < (size_t) decrypted_buffer_size){
620
ret = (int)fwrite (decrypted_buffer + written, 1,
621
(size_t)decrypted_buffer_size - written,
622
stdout);
692
ret = (int)fwrite(decrypted_buffer + written, 1,
693
(size_t)decrypted_buffer_size - written,
694
stdout);
623
695
if(ret == 0 and ferror(stdout)){
624
696
if(debug){
625
697
fprintf(stderr, "Error writing encrypted data: %s\n",
634
706
} else {
635
707
retval = -1;
636
708
}
709
} else {
710
retval = -1;
637
711
}
638
712
639
713
/* Shutdown procedure */
640
714
641
715
mandos_end:
642
716
free(buffer);
643
close(tcp_sd);
644
gnutls_deinit (session);
717
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
718
if(ret == -1){
719
perror("close");
720
}
721
gnutls_deinit(session);
645
722
return retval;
646
723
}
647
724
660
737
flags,
661
738
void* userdata) {
662
739
mandos_context *mc = userdata;
663
assert(r); /* Spurious warning */
740
assert(r);
664
741
665
742
/* Called whenever a service has been resolved successfully or
666
743
timed out */
667
744
668
switch (event) {
745
switch(event) {
669
746
default:
670
747
case AVAHI_RESOLVER_FAILURE:
671
748
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
679
756
avahi_address_snprint(ip, sizeof(ip), address);
680
757
if(debug){
681
758
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
682
PRIu16 ") on port %d\n", name, host_name, ip,
683
interface, port);
759
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
760
ip, (intmax_t)interface, port);
684
761
}
685
762
int ret = start_mandos_communication(ip, port, interface, mc);
686
if (ret == 0){
687
exit(EXIT_SUCCESS);
763
if(ret == 0){
764
avahi_simple_poll_quit(mc->simple_poll);
688
765
}
689
766
}
690
767
}
702
779
flags,
703
780
void* userdata) {
704
781
mandos_context *mc = userdata;
705
assert(b); /* Spurious warning */
782
assert(b);
706
783
707
784
/* Called whenever a new services becomes available on the LAN or
708
785
is removed from the LAN */
709
786
710
switch (event) {
787
switch(event) {
711
788
default:
712
789
case AVAHI_BROWSER_FAILURE:
713
790
722
799
the callback function is called the Avahi server will free the
723
800
resolver for us. */
724
801
725
if (!(avahi_s_service_resolver_new(mc->server, interface,
802
if(!(avahi_s_service_resolver_new(mc->server, interface,
726
803
protocol, name, type, domain,
727
804
AVAHI_PROTO_INET6, 0,
728
805
resolve_callback, mc)))
742
819
}
743
820
}
744
821
745
/* Combines file name and path and returns the malloced new
746
string. some sane checks could/should be added */
747
static const char *combinepath(const char *first, const char *second){
748
size_t f_len = strlen(first);
749
size_t s_len = strlen(second);
750
char *tmp = malloc(f_len + s_len + 2);
751
if (tmp == NULL){
752
return NULL;
753
}
754
if(f_len > 0){
755
memcpy(tmp, first, f_len); /* Spurious warning */
756
}
757
tmp[f_len] = '/';
758
if(s_len > 0){
759
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
760
}
761
tmp[f_len + 1 + s_len] = '\0';
762
return tmp;
763
}
764
765
766
822
int main(int argc, char *argv[]){
767
823
AvahiSServiceBrowser *sb = NULL;
768
824
int error;
769
825
int ret;
826
intmax_t tmpmax;
827
int numchars;
770
828
int exitcode = EXIT_SUCCESS;
771
829
const char *interface = "eth0";
772
830
struct ifreq network;
774
832
uid_t uid;
775
833
gid_t gid;
776
834
char *connect_to = NULL;
835
char tempdir[] = "/tmp/mandosXXXXXX";
836
bool tempdir_created = false;
777
837
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
778
const char *pubkeyfile = "pubkey.txt";
779
const char *seckeyfile = "seckey.txt";
838
const char *seckey = PATHDIR "/" SECKEY;
839
const char *pubkey = PATHDIR "/" PUBKEY;
840
780
841
mandos_context mc = { .simple_poll = NULL, .server = NULL,
781
.dh_bits = 1024, .priority = "SECURE256"};
782
bool gnutls_initalized = false;
842
.dh_bits = 1024, .priority = "SECURE256"
843
":!CTYPE-X.509:+CTYPE-OPENPGP" };
844
bool gnutls_initialized = false;
845
bool gpgme_initialized = false;
846
double delay = 2.5;
783
847
784
848
{
785
849
struct argp_option options[] = {
786
850
{ .name = "debug", .key = 128,
787
851
.doc = "Debug mode", .group = 3 },
788
852
{ .name = "connect", .key = 'c',
789
.arg = "IP",
790
.doc = "Connect directly to a sepcified mandos server",
853
.arg = "ADDRESS:PORT",
854
.doc = "Connect directly to a specific Mandos server",
791
855
.group = 1 },
792
856
{ .name = "interface", .key = 'i',
793
.arg = "INTERFACE",
794
.doc = "Interface that Avahi will conntect through",
795
.group = 1 },
796
{ .name = "keydir", .key = 'd',
797
.arg = "KEYDIR",
798
.doc = "Directory where the openpgp keyring is",
857
.arg = "NAME",
858
.doc = "Interface that will be used to search for Mandos"
859
" servers",
799
860
.group = 1 },
800
861
{ .name = "seckey", .key = 's',
801
.arg = "SECKEY",
802
.doc = "Secret openpgp key for gnutls authentication",
862
.arg = "FILE",
863
.doc = "OpenPGP secret key file base name",
803
864
.group = 1 },
804
865
{ .name = "pubkey", .key = 'p',
805
.arg = "PUBKEY",
806
.doc = "Public openpgp key for gnutls authentication",
866
.arg = "FILE",
867
.doc = "OpenPGP public key file base name",
807
868
.group = 2 },
808
869
{ .name = "dh-bits", .key = 129,
809
870
.arg = "BITS",
810
.doc = "dh-bits to use in gnutls communication",
871
.doc = "Bit length of the prime number used in the"
872
" Diffie-Hellman key exchange",
811
873
.group = 2 },
812
874
{ .name = "priority", .key = 130,
813
.arg = "PRIORITY",
814
.doc = "GNUTLS priority", .group = 1 },
875
.arg = "STRING",
876
.doc = "GnuTLS priority string for the TLS handshake",
877
.group = 1 },
878
{ .name = "delay", .key = 131,
879
.arg = "SECONDS",
880
.doc = "Maximum delay to wait for interface startup",
881
.group = 2 },
815
882
{ .name = NULL }
816
883
};
817
818
884
819
error_t parse_opt (int key, char *arg,
820
struct argp_state *state) {
821
/* Get the INPUT argument from `argp_parse', which we know is
822
a pointer to our plugin list pointer. */
823
switch (key) {
824
case 128:
885
error_t parse_opt(int key, char *arg,
886
struct argp_state *state) {
887
switch(key) {
888
case 128: /* --debug */
825
889
debug = true;
826
890
break;
827
case 'c':
891
case 'c': /* --connect */
828
892
connect_to = arg;
829
893
break;
830
case 'i':
894
case 'i': /* --interface */
831
895
interface = arg;
832
896
break;
833
case 'd':
834
keydir = arg;
835
break;
836
case 's':
837
seckeyfile = arg;
838
break;
839
case 'p':
840
pubkeyfile = arg;
841
break;
842
case 129:
843
errno = 0;
844
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
845
if (errno){
846
perror("strtol");
897
case 's': /* --seckey */
898
seckey = arg;
899
break;
900
case 'p': /* --pubkey */
901
pubkey = arg;
902
break;
903
case 129: /* --dh-bits */
904
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
905
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
906
or arg[numchars] != '\0'){
907
fprintf(stderr, "Bad number of DH bits\n");
847
908
exit(EXIT_FAILURE);
848
909
}
910
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
849
911
break;
850
case 130:
912
case 130: /* --priority */
851
913
mc.priority = arg;
852
914
break;
915
case 131: /* --delay */
916
ret = sscanf(arg, "%lf%n", &delay, &numchars);
917
if(ret < 1 or arg[numchars] != '\0'){
918
fprintf(stderr, "Bad delay\n");
919
exit(EXIT_FAILURE);
920
}
921
break;
853
922
case ARGP_KEY_ARG:
854
argp_usage (state);
923
argp_usage(state);
924
case ARGP_KEY_END:
855
925
break;
856
case ARGP_KEY_END:
857
break;
858
926
default:
859
927
return ARGP_ERR_UNKNOWN;
860
928
}
861
929
return 0;
862
930
}
863
931
864
932
struct argp argp = { .options = options, .parser = parse_opt,
865
933
.args_doc = "",
866
934
.doc = "Mandos client -- Get and decrypt"
867
" passwords from mandos server" };
868
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
869
if (ret == ARGP_ERR_UNKNOWN){
870
fprintf(stderr, "Unkown error while parsing arguments\n");
935
" passwords from a Mandos server" };
936
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
937
if(ret == ARGP_ERR_UNKNOWN){
938
fprintf(stderr, "Unknown error while parsing arguments\n");
871
939
exitcode = EXIT_FAILURE;
872
940
goto end;
873
941
}
874
942
}
943
944
/* If the interface is down, bring it up */
945
{
946
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
947
messages to mess up the prompt */
948
ret = klogctl(8, NULL, 5);
949
if(ret == -1){
950
perror("klogctl");
951
}
875
952
876
pubkeyfile = combinepath(keydir, pubkeyfile);
877
if (pubkeyfile == NULL){
878
perror("combinepath");
879
exitcode = EXIT_FAILURE;
880
goto end;
953
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
954
if(sd < 0) {
955
perror("socket");
956
exitcode = EXIT_FAILURE;
957
ret = klogctl(7, NULL, 0);
958
if(ret == -1){
959
perror("klogctl");
960
}
961
goto end;
962
}
963
strcpy(network.ifr_name, interface);
964
ret = ioctl(sd, SIOCGIFFLAGS, &network);
965
if(ret == -1){
966
perror("ioctl SIOCGIFFLAGS");
967
ret = klogctl(7, NULL, 0);
968
if(ret == -1){
969
perror("klogctl");
970
}
971
exitcode = EXIT_FAILURE;
972
goto end;
973
}
974
if((network.ifr_flags & IFF_UP) == 0){
975
network.ifr_flags |= IFF_UP;
976
ret = ioctl(sd, SIOCSIFFLAGS, &network);
977
if(ret == -1){
978
perror("ioctl SIOCSIFFLAGS");
979
exitcode = EXIT_FAILURE;
980
ret = klogctl(7, NULL, 0);
981
if(ret == -1){
982
perror("klogctl");
983
}
984
goto end;
985
}
986
}
987
/* sleep checking until interface is running */
988
for(int i=0; i < delay * 4; i++){
989
ret = ioctl(sd, SIOCGIFFLAGS, &network);
990
if(ret == -1){
991
perror("ioctl SIOCGIFFLAGS");
992
} else if(network.ifr_flags & IFF_RUNNING){
993
break;
994
}
995
struct timespec sleeptime = { .tv_nsec = 250000000 };
996
nanosleep(&sleeptime, NULL);
997
}
998
ret = (int)TEMP_FAILURE_RETRY(close(sd));
999
if(ret == -1){
1000
perror("close");
1001
}
1002
/* Restores kernel loglevel to default */
1003
ret = klogctl(7, NULL, 0);
1004
if(ret == -1){
1005
perror("klogctl");
1006
}
881
1007
}
882
1008
883
seckeyfile = combinepath(keydir, seckeyfile);
884
if (seckeyfile == NULL){
885
perror("combinepath");
886
goto end;
887
}
888
889
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
890
if (ret == -1){
891
fprintf(stderr, "init_gnutls_global\n");
892
goto end;
893
} else {
894
gnutls_initalized = true;
895
}
896
897
1009
uid = getuid();
898
1010
gid = getgid();
899
1011
1012
setgid(gid);
1013
if(ret == -1){
1014
perror("setgid");
1015
}
1016
900
1017
ret = setuid(uid);
901
if (ret == -1){
1018
if(ret == -1){
902
1019
perror("setuid");
903
1020
}
904
1021
905
setgid(gid);
906
if (ret == -1){
907
perror("setgid");
1022
ret = init_gnutls_global(&mc, pubkey, seckey);
1023
if(ret == -1){
1024
fprintf(stderr, "init_gnutls_global failed\n");
1025
exitcode = EXIT_FAILURE;
1026
goto end;
1027
} else {
1028
gnutls_initialized = true;
1029
}
1030
1031
if(mkdtemp(tempdir) == NULL){
1032
perror("mkdtemp");
1033
goto end;
1034
}
1035
tempdir_created = true;
1036
1037
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
1038
fprintf(stderr, "init_gpgme failed\n");
1039
exitcode = EXIT_FAILURE;
1040
goto end;
1041
} else {
1042
gpgme_initialized = true;
908
1043
}
909
1044
910
1045
if_index = (AvahiIfIndex) if_nametoindex(interface);
911
1046
if(if_index == 0){
912
1047
fprintf(stderr, "No such interface: \"%s\"\n", interface);
913
exit(EXIT_FAILURE);
1048
exitcode = EXIT_FAILURE;
1049
goto end;
914
1050
}
915
1051
916
1052
if(connect_to != NULL){
922
1058
exitcode = EXIT_FAILURE;
923
1059
goto end;
924
1060
}
925
errno = 0;
926
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
927
if(errno){
928
perror("Bad port number");
1061
uint16_t port;
1062
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1063
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1064
or address[numchars+1] != '\0'){
1065
fprintf(stderr, "Bad port number\n");
929
1066
exitcode = EXIT_FAILURE;
930
1067
goto end;
931
1068
}
1069
port = (uint16_t)tmpmax;
932
1070
*address = '\0';
933
1071
address = connect_to;
934
1072
ret = start_mandos_communication(address, port, if_index, &mc);
940
1078
goto end;
941
1079
}
942
1080
943
/* If the interface is down, bring it up */
944
{
945
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
946
if(sd < 0) {
947
perror("socket");
948
exitcode = EXIT_FAILURE;
949
goto end;
950
}
951
strcpy(network.ifr_name, interface); /* Spurious warning */
952
ret = ioctl(sd, SIOCGIFFLAGS, &network);
953
if(ret == -1){
954
perror("ioctl SIOCGIFFLAGS");
955
exitcode = EXIT_FAILURE;
956
goto end;
957
}
958
if((network.ifr_flags & IFF_UP) == 0){
959
network.ifr_flags |= IFF_UP;
960
ret = ioctl(sd, SIOCSIFFLAGS, &network);
961
if(ret == -1){
962
perror("ioctl SIOCSIFFLAGS");
963
exitcode = EXIT_FAILURE;
964
goto end;
965
}
966
}
967
close(sd);
968
}
969
970
if (not debug){
1081
if(not debug){
971
1082
avahi_set_log_function(empty_log);
972
1083
}
973
1084
976
1087
977
1088
/* Allocate main Avahi loop object */
978
1089
mc.simple_poll = avahi_simple_poll_new();
979
if (mc.simple_poll == NULL) {
1090
if(mc.simple_poll == NULL) {
980
1091
fprintf(stderr, "Avahi: Failed to create simple poll"
981
1092
" object.\n");
982
1093
exitcode = EXIT_FAILURE;
983
1094
goto end;
984
1095
}
985
1096
986
1097
{
987
1098
AvahiServerConfig config;
988
1099
/* Do not publish any local Zeroconf records */
991
1102
config.publish_addresses = 0;
992
1103
config.publish_workstation = 0;
993
1104
config.publish_domain = 0;
994
1105
995
1106
/* Allocate a new server */
996
1107
mc.server = avahi_server_new(avahi_simple_poll_get
997
1108
(mc.simple_poll), &config, NULL,
998
1109
NULL, &error);
999
1110
1000
1111
/* Free the Avahi configuration data */
1001
1112
avahi_server_config_free(&config);
1002
1113
}
1003
1114
1004
1115
/* Check if creating the Avahi server object succeeded */
1005
if (mc.server == NULL) {
1116
if(mc.server == NULL) {
1006
1117
fprintf(stderr, "Failed to create Avahi server: %s\n",
1007
1118
avahi_strerror(error));
1008
1119
exitcode = EXIT_FAILURE;
1014
1125
AVAHI_PROTO_INET6,
1015
1126
"_mandos._tcp", NULL, 0,
1016
1127
browse_callback, &mc);
1017
if (sb == NULL) {
1128
if(sb == NULL) {
1018
1129
fprintf(stderr, "Failed to create service browser: %s\n",
1019
1130
avahi_strerror(avahi_server_errno(mc.server)));
1020
1131
exitcode = EXIT_FAILURE;
1022
1133
}
1023
1134
1024
1135
/* Run the main loop */
1025
1026
if (debug){
1136
1137
if(debug){
1027
1138
fprintf(stderr, "Starting Avahi loop search\n");
1028
1139
}
1029
1140
1030
1141
avahi_simple_poll_loop(mc.simple_poll);
1031
1142
1032
1143
end:
1033
1034
if (debug){
1144
1145
if(debug){
1035
1146
fprintf(stderr, "%s exiting\n", argv[0]);
1036
1147
}
1037
1148
1038
1149
/* Cleanup things */
1039
if (sb != NULL)
1150
if(sb != NULL)
1040
1151
avahi_s_service_browser_free(sb);
1041
1152
1042
if (mc.server != NULL)
1153
if(mc.server != NULL)
1043
1154
avahi_server_free(mc.server);
1044
1045
if (mc.simple_poll != NULL)
1155
1156
if(mc.simple_poll != NULL)
1046
1157
avahi_simple_poll_free(mc.simple_poll);
1047
free(pubkeyfile);
1048
free(seckeyfile);
1049
1050
if (gnutls_initalized){
1158
1159
if(gnutls_initialized){
1051
1160
gnutls_certificate_free_credentials(mc.cred);
1052
gnutls_global_deinit ();
1161
gnutls_global_deinit();
1162
gnutls_dh_params_deinit(mc.dh_params);
1163
}
1164
1165
if(gpgme_initialized){
1166
gpgme_release(mc.ctx);
1167
}
1168
1169
/* Removes the temp directory used by GPGME */
1170
if(tempdir_created){
1171
DIR *d;
1172
struct dirent *direntry;
1173
d = opendir(tempdir);
1174
if(d == NULL){
1175
if(errno != ENOENT){
1176
perror("opendir");
1177
}
1178
} else {
1179
while(true){
1180
direntry = readdir(d);
1181
if(direntry == NULL){
1182
break;
1183
}
1184
/* Skip "." and ".." */
1185
if(direntry->d_name[0] == '.'
1186
and (direntry->d_name[1] == '\0'
1187
or (direntry->d_name[1] == '.'
1188
and direntry->d_name[2] == '\0'))){
1189
continue;
1190
}
1191
char *fullname = NULL;
1192
ret = asprintf(&fullname, "%s/%s", tempdir,
1193
direntry->d_name);
1194
if(ret < 0){
1195
perror("asprintf");
1196
continue;
1197
}
1198
ret = remove(fullname);
1199
if(ret == -1){
1200
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1201
strerror(errno));
1202
}
1203
free(fullname);
1204
}
1205
closedir(d);
1206
}
1207
ret = rmdir(tempdir);
1208
if(ret == -1 and errno != ENOENT){
1209
perror("rmdir");
1210
}
1053
1211
}
1054
1212
1055
1213
return exitcode;
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0