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- Committer: Teddy Hogeborn
- Date: 2009-02-03 22:41:49 UTC
- Revision ID: teddy@fukt.bsnet.se-20090203224149-fc1301jojmusbzlx
* Makefile (run-server): Use "--no-dbus" unconditionally.
* initramfs-tools-script: Correct tests for writable "/conf/conf.d".
* mandos: Add process ID number to logging messages.
(IPv6_TCPServer.server_bind): Use plain "raise".
(main): Do not try to handle SIGSEGV; it does not work. Use plain
"raise". Log KeyboardInterrupt and server exit.
* initramfs-tools-script: Correct tests for writable "/conf/conf.d".
* mandos: Add process ID number to logging messages.
(IPv6_TCPServer.server_bind): Use plain "raise".
(main): Do not try to handle SIGSEGV; it does not work. Use plain
"raise". Log KeyboardInterrupt and server exit.
- 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 */
52
uid_t, gid_t, open(), opendir(),
53
DIR */
54
#include <sys/stat.h> /* open() */
53
55
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
54
56
struct in6_addr, inet_pton(),
55
57
connect() */
58
#include <fcntl.h> /* open() */
59
#include <dirent.h> /* opendir(), struct dirent, readdir()
60
*/
61
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
56
62
#include <assert.h> /* assert() */
57
63
#include <errno.h> /* perror(), errno */
58
#include <time.h> /* time() */
64
#include <time.h> /* nanosleep(), time() */
59
65
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
60
66
SIOCSIFFLAGS, if_indextoname(),
61
67
if_nametoindex(), IF_NAMESIZE */
68
#include <netinet/in.h>
62
69
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
63
70
getuid(), getgid(), setuid(),
64
71
setgid() */
65
#include <netinet/in.h>
66
72
#include <arpa/inet.h> /* inet_pton(), htons */
67
#include <iso646.h> /* not, and */
73
#include <iso646.h> /* not, and, or */
68
74
#include <argp.h> /* struct argp_option, error_t, struct
69
75
argp_state, struct argp,
70
76
argp_parse(), ARGP_KEY_ARG,
71
77
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
78
#include <sys/klog.h> /* klogctl() */
72
79
73
80
/* Avahi */
74
81
/* All Avahi types, constants and functions
82
89
#include <avahi-common/error.h>
83
90
84
91
/* GnuTLS */
85
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and functions
92
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
93
functions:
86
94
gnutls_*
87
95
init_gnutls_session(),
88
96
GNUTLS_* */
89
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
97
#include <gnutls/openpgp.h>
98
/* gnutls_certificate_set_openpgp_key_file(),
90
99
GNUTLS_OPENPGP_FMT_BASE64 */
91
100
92
101
/* GPGME */
93
#include <gpgme.h> /* All GPGME types, constants and functions
102
#include <gpgme.h> /* All GPGME types, constants and
103
functions:
94
104
gpgme_*
95
105
GPGME_PROTOCOL_OpenPGP,
96
106
GPG_ERR_NO_* */
97
107
98
108
#define BUFFER_SIZE 256
99
109
110
#define PATHDIR "/conf/conf.d/mandos"
111
#define SECKEY "seckey.txt"
112
#define PUBKEY "pubkey.txt"
113
100
114
bool debug = false;
101
static const char *keydir = "/conf/conf.d/mandos";
102
115
static const char mandos_protocol_version[] = "1";
103
const char *argp_program_version = "mandosclient 1.0";
116
const char *argp_program_version = "mandos-client " VERSION;
104
117
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
105
118
106
119
/* Used for passing in values through the Avahi callback functions */
111
124
unsigned int dh_bits;
112
125
gnutls_dh_params_t dh_params;
113
126
const char *priority;
127
gpgme_ctx_t ctx;
114
128
} mandos_context;
115
129
116
130
/*
120
134
*/
121
135
size_t adjustbuffer(char **buffer, size_t buffer_length,
122
136
size_t buffer_capacity){
123
if (buffer_length + BUFFER_SIZE > buffer_capacity){
137
if(buffer_length + BUFFER_SIZE > buffer_capacity){
124
138
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
125
if (buffer == NULL){
139
if(buffer == NULL){
126
140
return 0;
127
141
}
128
142
buffer_capacity += BUFFER_SIZE;
131
145
}
132
146
133
147
/*
134
* Decrypt OpenPGP data using keyrings in HOMEDIR.
135
* Returns -1 on error
148
* Initialize GPGME.
136
149
*/
137
static ssize_t pgp_packet_decrypt (const char *cryptotext,
138
size_t crypto_size,
139
char **plaintext,
140
const char *homedir){
141
gpgme_data_t dh_crypto, dh_plain;
142
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;
143
153
gpgme_error_t rc;
144
ssize_t ret;
145
size_t plaintext_capacity = 0;
146
ssize_t plaintext_length = 0;
147
154
gpgme_engine_info_t engine_info;
148
155
149
if (debug){
150
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");
151
194
}
152
195
153
196
/* Init GPGME */
154
197
gpgme_check_version(NULL);
155
198
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
156
if (rc != GPG_ERR_NO_ERROR){
199
if(rc != GPG_ERR_NO_ERROR){
157
200
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
158
201
gpgme_strsource(rc), gpgme_strerror(rc));
159
return -1;
202
return false;
160
203
}
161
204
162
/* Set GPGME home directory for the OpenPGP engine only */
163
rc = gpgme_get_engine_info (&engine_info);
164
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){
165
208
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
166
209
gpgme_strsource(rc), gpgme_strerror(rc));
167
return -1;
210
return false;
168
211
}
169
212
while(engine_info != NULL){
170
213
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
171
214
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
172
engine_info->file_name, homedir);
215
engine_info->file_name, tempdir);
173
216
break;
174
217
}
175
218
engine_info = engine_info->next;
176
219
}
177
220
if(engine_info == NULL){
178
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
179
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");
180
256
}
181
257
182
258
/* Create new GPGME data buffer from memory cryptotext */
183
259
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
184
260
0);
185
if (rc != GPG_ERR_NO_ERROR){
261
if(rc != GPG_ERR_NO_ERROR){
186
262
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
187
263
gpgme_strsource(rc), gpgme_strerror(rc));
188
264
return -1;
190
266
191
267
/* Create new empty GPGME data buffer for the plaintext */
192
268
rc = gpgme_data_new(&dh_plain);
193
if (rc != GPG_ERR_NO_ERROR){
269
if(rc != GPG_ERR_NO_ERROR){
194
270
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
195
271
gpgme_strsource(rc), gpgme_strerror(rc));
196
272
gpgme_data_release(dh_crypto);
197
273
return -1;
198
274
}
199
275
200
/* Create new GPGME "context" */
201
rc = gpgme_new(&ctx);
202
if (rc != GPG_ERR_NO_ERROR){
203
fprintf(stderr, "bad gpgme_new: %s: %s\n",
204
gpgme_strsource(rc), gpgme_strerror(rc));
205
plaintext_length = -1;
206
goto decrypt_end;
207
}
208
209
276
/* Decrypt data from the cryptotext data buffer to the plaintext
210
277
data buffer */
211
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
212
if (rc != GPG_ERR_NO_ERROR){
278
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
279
if(rc != GPG_ERR_NO_ERROR){
213
280
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
214
281
gpgme_strsource(rc), gpgme_strerror(rc));
215
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
}
216
311
goto decrypt_end;
217
312
}
218
313
220
315
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
221
316
}
222
317
223
if (debug){
224
gpgme_decrypt_result_t result;
225
result = gpgme_op_decrypt_result(ctx);
226
if (result == NULL){
227
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
228
} else {
229
fprintf(stderr, "Unsupported algorithm: %s\n",
230
result->unsupported_algorithm);
231
fprintf(stderr, "Wrong key usage: %d\n",
232
result->wrong_key_usage);
233
if(result->file_name != NULL){
234
fprintf(stderr, "File name: %s\n", result->file_name);
235
}
236
gpgme_recipient_t recipient;
237
recipient = result->recipients;
238
if(recipient){
239
while(recipient != NULL){
240
fprintf(stderr, "Public key algorithm: %s\n",
241
gpgme_pubkey_algo_name(recipient->pubkey_algo));
242
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
243
fprintf(stderr, "Secret key available: %s\n",
244
recipient->status == GPG_ERR_NO_SECKEY
245
? "No" : "Yes");
246
recipient = recipient->next;
247
}
248
}
249
}
250
}
251
252
318
/* Seek back to the beginning of the GPGME plaintext data buffer */
253
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
254
perror("pgpme_data_seek");
319
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
320
perror("gpgme_data_seek");
255
321
plaintext_length = -1;
256
322
goto decrypt_end;
257
323
}
261
327
plaintext_capacity = adjustbuffer(plaintext,
262
328
(size_t)plaintext_length,
263
329
plaintext_capacity);
264
if (plaintext_capacity == 0){
330
if(plaintext_capacity == 0){
265
331
perror("adjustbuffer");
266
332
plaintext_length = -1;
267
333
goto decrypt_end;
270
336
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
271
337
BUFFER_SIZE);
272
338
/* Print the data, if any */
273
if (ret == 0){
339
if(ret == 0){
274
340
/* EOF */
275
341
break;
276
342
}
281
347
}
282
348
plaintext_length += ret;
283
349
}
284
350
285
351
if(debug){
286
352
fprintf(stderr, "Decrypted password is: ");
287
353
for(ssize_t i = 0; i < plaintext_length; i++){
300
366
return plaintext_length;
301
367
}
302
368
303
static const char * safer_gnutls_strerror (int value) {
304
const char *ret = gnutls_strerror (value);
305
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)
306
373
ret = "(unknown)";
307
374
return ret;
308
375
}
314
381
}
315
382
316
383
static int init_gnutls_global(mandos_context *mc,
317
const char *pubkeyfile,
318
const char *seckeyfile){
384
const char *pubkeyfilename,
385
const char *seckeyfilename){
319
386
int ret;
320
387
321
388
if(debug){
323
390
}
324
391
325
392
ret = gnutls_global_init();
326
if (ret != GNUTLS_E_SUCCESS) {
327
fprintf (stderr, "GnuTLS global_init: %s\n",
328
safer_gnutls_strerror(ret));
393
if(ret != GNUTLS_E_SUCCESS) {
394
fprintf(stderr, "GnuTLS global_init: %s\n",
395
safer_gnutls_strerror(ret));
329
396
return -1;
330
397
}
331
398
332
if (debug){
399
if(debug){
333
400
/* "Use a log level over 10 to enable all debugging options."
334
401
* - GnuTLS manual
335
402
*/
339
406
340
407
/* OpenPGP credentials */
341
408
gnutls_certificate_allocate_credentials(&mc->cred);
342
if (ret != GNUTLS_E_SUCCESS){
343
fprintf (stderr, "GnuTLS memory error: %s\n",
344
safer_gnutls_strerror(ret));
345
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();
346
416
return -1;
347
417
}
348
418
349
419
if(debug){
350
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
351
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
352
seckeyfile);
420
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
421
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
422
seckeyfilename);
353
423
}
354
424
355
425
ret = gnutls_certificate_set_openpgp_key_file
356
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
357
if (ret != GNUTLS_E_SUCCESS) {
426
(mc->cred, pubkeyfilename, seckeyfilename,
427
GNUTLS_OPENPGP_FMT_BASE64);
428
if(ret != GNUTLS_E_SUCCESS) {
358
429
fprintf(stderr,
359
430
"Error[%d] while reading the OpenPGP key pair ('%s',"
360
" '%s')\n", ret, pubkeyfile, seckeyfile);
361
fprintf(stdout, "The GnuTLS error is: %s\n",
431
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
432
fprintf(stderr, "The GnuTLS error is: %s\n",
362
433
safer_gnutls_strerror(ret));
363
434
goto globalfail;
364
435
}
365
436
366
437
/* GnuTLS server initialization */
367
438
ret = gnutls_dh_params_init(&mc->dh_params);
368
if (ret != GNUTLS_E_SUCCESS) {
369
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
370
" %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));
371
442
goto globalfail;
372
443
}
373
444
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
374
if (ret != GNUTLS_E_SUCCESS) {
375
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
376
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));
377
448
goto globalfail;
378
449
}
379
450
380
451
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
381
452
382
453
return 0;
383
454
384
455
globalfail:
385
456
386
457
gnutls_certificate_free_credentials(mc->cred);
387
458
gnutls_global_deinit();
459
gnutls_dh_params_deinit(mc->dh_params);
388
460
return -1;
389
390
461
}
391
462
392
463
static int init_gnutls_session(mandos_context *mc,
394
465
int ret;
395
466
/* GnuTLS session creation */
396
467
ret = gnutls_init(session, GNUTLS_SERVER);
397
if (ret != GNUTLS_E_SUCCESS){
468
if(ret != GNUTLS_E_SUCCESS){
398
469
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
399
470
safer_gnutls_strerror(ret));
400
471
}
402
473
{
403
474
const char *err;
404
475
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
405
if (ret != GNUTLS_E_SUCCESS) {
476
if(ret != GNUTLS_E_SUCCESS) {
406
477
fprintf(stderr, "Syntax error at: %s\n", err);
407
478
fprintf(stderr, "GnuTLS error: %s\n",
408
479
safer_gnutls_strerror(ret));
409
gnutls_deinit (*session);
480
gnutls_deinit(*session);
410
481
return -1;
411
482
}
412
483
}
413
484
414
485
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
415
486
mc->cred);
416
if (ret != GNUTLS_E_SUCCESS) {
487
if(ret != GNUTLS_E_SUCCESS) {
417
488
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
418
489
safer_gnutls_strerror(ret));
419
gnutls_deinit (*session);
490
gnutls_deinit(*session);
420
491
return -1;
421
492
}
422
493
423
494
/* ignore client certificate if any. */
424
gnutls_certificate_server_set_request (*session,
425
GNUTLS_CERT_IGNORE);
495
gnutls_certificate_server_set_request(*session,
496
GNUTLS_CERT_IGNORE);
426
497
427
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
498
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
428
499
429
500
return 0;
430
501
}
438
509
AvahiIfIndex if_index,
439
510
mandos_context *mc){
440
511
int ret, tcp_sd;
512
ssize_t sret;
441
513
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
442
514
char *buffer = NULL;
443
515
char *decrypted_buffer;
449
521
char interface[IF_NAMESIZE];
450
522
gnutls_session_t session;
451
523
452
ret = init_gnutls_session (mc, &session);
453
if (ret != 0){
524
ret = init_gnutls_session(mc, &session);
525
if(ret != 0){
454
526
return -1;
455
527
}
456
528
457
529
if(debug){
458
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
459
ip, port);
530
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
531
"\n", ip, port);
460
532
}
461
533
462
534
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
464
536
perror("socket");
465
537
return -1;
466
538
}
467
539
468
540
if(debug){
469
541
if(if_indextoname((unsigned int)if_index, interface) == NULL){
470
542
perror("if_indextoname");
473
545
fprintf(stderr, "Binding to interface %s\n", interface);
474
546
}
475
547
476
memset(&to,0,sizeof(to)); /* Spurious warning */
548
memset(&to, 0, sizeof(to));
477
549
to.in6.sin6_family = AF_INET6;
478
550
/* It would be nice to have a way to detect if we were passed an
479
551
IPv4 address here. Now we assume an IPv6 address. */
480
552
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
481
if (ret < 0 ){
553
if(ret < 0 ){
482
554
perror("inet_pton");
483
555
return -1;
484
556
}
486
558
fprintf(stderr, "Bad address: %s\n", ip);
487
559
return -1;
488
560
}
489
to.in6.sin6_port = htons(port); /* Spurious warning */
561
to.in6.sin6_port = htons(port); /* Spurious warnings from
562
-Wconversion and
563
-Wunreachable-code */
490
564
491
565
to.in6.sin6_scope_id = (uint32_t)if_index;
492
566
493
567
if(debug){
494
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
568
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
569
port);
495
570
char addrstr[INET6_ADDRSTRLEN] = "";
496
571
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
497
572
sizeof(addrstr)) == NULL){
504
579
}
505
580
506
581
ret = connect(tcp_sd, &to.in, sizeof(to));
507
if (ret < 0){
582
if(ret < 0){
508
583
perror("connect");
509
584
return -1;
510
585
}
511
586
512
587
const char *out = mandos_protocol_version;
513
588
written = 0;
514
while (true){
589
while(true){
515
590
size_t out_size = strlen(out);
516
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
591
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
517
592
out_size - written));
518
if (ret == -1){
593
if(ret == -1){
519
594
perror("write");
520
595
retval = -1;
521
596
goto mandos_end;
524
599
if(written < out_size){
525
600
continue;
526
601
} else {
527
if (out == mandos_protocol_version){
602
if(out == mandos_protocol_version){
528
603
written = 0;
529
604
out = "\r\n";
530
605
} else {
532
607
}
533
608
}
534
609
}
535
610
536
611
if(debug){
537
612
fprintf(stderr, "Establishing TLS session with %s\n", ip);
538
613
}
539
614
540
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
541
615
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
616
542
617
do{
543
ret = gnutls_handshake (session);
618
ret = gnutls_handshake(session);
544
619
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
545
620
546
if (ret != GNUTLS_E_SUCCESS){
621
if(ret != GNUTLS_E_SUCCESS){
547
622
if(debug){
548
623
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
549
gnutls_perror (ret);
624
gnutls_perror(ret);
550
625
}
551
626
retval = -1;
552
627
goto mandos_end;
558
633
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
559
634
ip);
560
635
}
561
636
562
637
while(true){
563
638
buffer_capacity = adjustbuffer(&buffer, buffer_length,
564
639
buffer_capacity);
565
if (buffer_capacity == 0){
640
if(buffer_capacity == 0){
566
641
perror("adjustbuffer");
567
642
retval = -1;
568
643
goto mandos_end;
569
644
}
570
645
571
ret = gnutls_record_recv(session, buffer+buffer_length,
572
BUFFER_SIZE);
573
if (ret == 0){
646
sret = gnutls_record_recv(session, buffer+buffer_length,
647
BUFFER_SIZE);
648
if(sret == 0){
574
649
break;
575
650
}
576
if (ret < 0){
577
switch(ret){
651
if(sret < 0){
652
switch(sret){
578
653
case GNUTLS_E_INTERRUPTED:
579
654
case GNUTLS_E_AGAIN:
580
655
break;
581
656
case GNUTLS_E_REHANDSHAKE:
582
657
do{
583
ret = gnutls_handshake (session);
658
ret = gnutls_handshake(session);
584
659
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
585
if (ret < 0){
660
if(ret < 0){
586
661
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
587
gnutls_perror (ret);
662
gnutls_perror(ret);
588
663
retval = -1;
589
664
goto mandos_end;
590
665
}
593
668
fprintf(stderr, "Unknown error while reading data from"
594
669
" encrypted session with Mandos server\n");
595
670
retval = -1;
596
gnutls_bye (session, GNUTLS_SHUT_RDWR);
671
gnutls_bye(session, GNUTLS_SHUT_RDWR);
597
672
goto mandos_end;
598
673
}
599
674
} else {
600
buffer_length += (size_t) ret;
675
buffer_length += (size_t) sret;
601
676
}
602
677
}
603
678
605
680
fprintf(stderr, "Closing TLS session\n");
606
681
}
607
682
608
gnutls_bye (session, GNUTLS_SHUT_RDWR);
683
gnutls_bye(session, GNUTLS_SHUT_RDWR);
609
684
610
if (buffer_length > 0){
611
decrypted_buffer_size = pgp_packet_decrypt(buffer,
685
if(buffer_length > 0){
686
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
612
687
buffer_length,
613
&decrypted_buffer,
614
keydir);
615
if (decrypted_buffer_size >= 0){
688
&decrypted_buffer);
689
if(decrypted_buffer_size >= 0){
616
690
written = 0;
617
691
while(written < (size_t) decrypted_buffer_size){
618
ret = (int)fwrite (decrypted_buffer + written, 1,
619
(size_t)decrypted_buffer_size - written,
620
stdout);
692
ret = (int)fwrite(decrypted_buffer + written, 1,
693
(size_t)decrypted_buffer_size - written,
694
stdout);
621
695
if(ret == 0 and ferror(stdout)){
622
696
if(debug){
623
697
fprintf(stderr, "Error writing encrypted data: %s\n",
632
706
} else {
633
707
retval = -1;
634
708
}
709
} else {
710
retval = -1;
635
711
}
636
712
637
713
/* Shutdown procedure */
638
714
639
715
mandos_end:
640
716
free(buffer);
641
close(tcp_sd);
642
gnutls_deinit (session);
717
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
718
if(ret == -1){
719
perror("close");
720
}
721
gnutls_deinit(session);
643
722
return retval;
644
723
}
645
724
658
737
flags,
659
738
void* userdata) {
660
739
mandos_context *mc = userdata;
661
assert(r); /* Spurious warning */
740
assert(r);
662
741
663
742
/* Called whenever a service has been resolved successfully or
664
743
timed out */
665
744
666
switch (event) {
745
switch(event) {
667
746
default:
668
747
case AVAHI_RESOLVER_FAILURE:
669
748
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
676
755
char ip[AVAHI_ADDRESS_STR_MAX];
677
756
avahi_address_snprint(ip, sizeof(ip), address);
678
757
if(debug){
679
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
680
" port %d\n", name, host_name, ip, interface, port);
758
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
759
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
760
ip, (intmax_t)interface, port);
681
761
}
682
762
int ret = start_mandos_communication(ip, port, interface, mc);
683
if (ret == 0){
684
exit(EXIT_SUCCESS);
763
if(ret == 0){
764
avahi_simple_poll_quit(mc->simple_poll);
685
765
}
686
766
}
687
767
}
699
779
flags,
700
780
void* userdata) {
701
781
mandos_context *mc = userdata;
702
assert(b); /* Spurious warning */
782
assert(b);
703
783
704
784
/* Called whenever a new services becomes available on the LAN or
705
785
is removed from the LAN */
706
786
707
switch (event) {
787
switch(event) {
708
788
default:
709
789
case AVAHI_BROWSER_FAILURE:
710
790
719
799
the callback function is called the Avahi server will free the
720
800
resolver for us. */
721
801
722
if (!(avahi_s_service_resolver_new(mc->server, interface,
802
if(!(avahi_s_service_resolver_new(mc->server, interface,
723
803
protocol, name, type, domain,
724
804
AVAHI_PROTO_INET6, 0,
725
805
resolve_callback, mc)))
739
819
}
740
820
}
741
821
742
/* Combines file name and path and returns the malloced new
743
string. some sane checks could/should be added */
744
static const char *combinepath(const char *first, const char *second){
745
size_t f_len = strlen(first);
746
size_t s_len = strlen(second);
747
char *tmp = malloc(f_len + s_len + 2);
748
if (tmp == NULL){
749
return NULL;
750
}
751
if(f_len > 0){
752
memcpy(tmp, first, f_len); /* Spurious warning */
753
}
754
tmp[f_len] = '/';
755
if(s_len > 0){
756
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
757
}
758
tmp[f_len + 1 + s_len] = '\0';
759
return tmp;
760
}
761
762
763
822
int main(int argc, char *argv[]){
764
823
AvahiSServiceBrowser *sb = NULL;
765
824
int error;
766
825
int ret;
826
intmax_t tmpmax;
827
int numchars;
767
828
int exitcode = EXIT_SUCCESS;
768
829
const char *interface = "eth0";
769
830
struct ifreq network;
771
832
uid_t uid;
772
833
gid_t gid;
773
834
char *connect_to = NULL;
835
char tempdir[] = "/tmp/mandosXXXXXX";
836
bool tempdir_created = false;
774
837
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
775
const char *pubkeyfile = "pubkey.txt";
776
const char *seckeyfile = "seckey.txt";
838
const char *seckey = PATHDIR "/" SECKEY;
839
const char *pubkey = PATHDIR "/" PUBKEY;
840
777
841
mandos_context mc = { .simple_poll = NULL, .server = NULL,
778
.dh_bits = 1024, .priority = "SECURE256"};
779
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;
780
847
781
848
{
782
849
struct argp_option options[] = {
783
850
{ .name = "debug", .key = 128,
784
851
.doc = "Debug mode", .group = 3 },
785
852
{ .name = "connect", .key = 'c',
786
.arg = "IP",
787
.doc = "Connect directly to a sepcified mandos server",
853
.arg = "ADDRESS:PORT",
854
.doc = "Connect directly to a specific Mandos server",
788
855
.group = 1 },
789
856
{ .name = "interface", .key = 'i',
790
.arg = "INTERFACE",
791
.doc = "Interface that Avahi will conntect through",
792
.group = 1 },
793
{ .name = "keydir", .key = 'd',
794
.arg = "KEYDIR",
795
.doc = "Directory where the openpgp keyring is",
857
.arg = "NAME",
858
.doc = "Interface that will be used to search for Mandos"
859
" servers",
796
860
.group = 1 },
797
861
{ .name = "seckey", .key = 's',
798
.arg = "SECKEY",
799
.doc = "Secret openpgp key for gnutls authentication",
862
.arg = "FILE",
863
.doc = "OpenPGP secret key file base name",
800
864
.group = 1 },
801
865
{ .name = "pubkey", .key = 'p',
802
.arg = "PUBKEY",
803
.doc = "Public openpgp key for gnutls authentication",
866
.arg = "FILE",
867
.doc = "OpenPGP public key file base name",
804
868
.group = 2 },
805
869
{ .name = "dh-bits", .key = 129,
806
870
.arg = "BITS",
807
.doc = "dh-bits to use in gnutls communication",
871
.doc = "Bit length of the prime number used in the"
872
" Diffie-Hellman key exchange",
808
873
.group = 2 },
809
874
{ .name = "priority", .key = 130,
810
.arg = "PRIORITY",
811
.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 },
812
882
{ .name = NULL }
813
883
};
814
815
884
816
error_t parse_opt (int key, char *arg,
817
struct argp_state *state) {
818
/* Get the INPUT argument from `argp_parse', which we know is
819
a pointer to our plugin list pointer. */
820
switch (key) {
821
case 128:
885
error_t parse_opt(int key, char *arg,
886
struct argp_state *state) {
887
switch(key) {
888
case 128: /* --debug */
822
889
debug = true;
823
890
break;
824
case 'c':
891
case 'c': /* --connect */
825
892
connect_to = arg;
826
893
break;
827
case 'i':
894
case 'i': /* --interface */
828
895
interface = arg;
829
896
break;
830
case 'd':
831
keydir = arg;
832
break;
833
case 's':
834
seckeyfile = arg;
835
break;
836
case 'p':
837
pubkeyfile = arg;
838
break;
839
case 129:
840
errno = 0;
841
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
842
if (errno){
843
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");
844
908
exit(EXIT_FAILURE);
845
909
}
910
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
846
911
break;
847
case 130:
912
case 130: /* --priority */
848
913
mc.priority = arg;
849
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;
850
922
case ARGP_KEY_ARG:
851
argp_usage (state);
923
argp_usage(state);
924
case ARGP_KEY_END:
852
925
break;
853
case ARGP_KEY_END:
854
break;
855
926
default:
856
927
return ARGP_ERR_UNKNOWN;
857
928
}
858
929
return 0;
859
930
}
860
931
861
932
struct argp argp = { .options = options, .parser = parse_opt,
862
933
.args_doc = "",
863
934
.doc = "Mandos client -- Get and decrypt"
864
" passwords from mandos server" };
865
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
866
if (ret == ARGP_ERR_UNKNOWN){
867
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");
868
939
exitcode = EXIT_FAILURE;
869
940
goto end;
870
941
}
871
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
}
872
952
873
pubkeyfile = combinepath(keydir, pubkeyfile);
874
if (pubkeyfile == NULL){
875
perror("combinepath");
876
exitcode = EXIT_FAILURE;
877
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
}
878
1007
}
879
1008
880
seckeyfile = combinepath(keydir, seckeyfile);
881
if (seckeyfile == NULL){
882
perror("combinepath");
883
goto end;
884
}
885
886
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
887
if (ret == -1){
888
fprintf(stderr, "init_gnutls_global\n");
889
goto end;
890
} else {
891
gnutls_initalized = true;
892
}
893
894
1009
uid = getuid();
895
1010
gid = getgid();
896
1011
1012
setgid(gid);
1013
if(ret == -1){
1014
perror("setgid");
1015
}
1016
897
1017
ret = setuid(uid);
898
if (ret == -1){
1018
if(ret == -1){
899
1019
perror("setuid");
900
1020
}
901
1021
902
setgid(gid);
903
if (ret == -1){
904
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;
905
1043
}
906
1044
907
1045
if_index = (AvahiIfIndex) if_nametoindex(interface);
908
1046
if(if_index == 0){
909
1047
fprintf(stderr, "No such interface: \"%s\"\n", interface);
910
exit(EXIT_FAILURE);
1048
exitcode = EXIT_FAILURE;
1049
goto end;
911
1050
}
912
1051
913
1052
if(connect_to != NULL){
919
1058
exitcode = EXIT_FAILURE;
920
1059
goto end;
921
1060
}
922
errno = 0;
923
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
924
if(errno){
925
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");
926
1066
exitcode = EXIT_FAILURE;
927
1067
goto end;
928
1068
}
1069
port = (uint16_t)tmpmax;
929
1070
*address = '\0';
930
1071
address = connect_to;
931
1072
ret = start_mandos_communication(address, port, if_index, &mc);
937
1078
goto end;
938
1079
}
939
1080
940
/* If the interface is down, bring it up */
941
{
942
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
943
if(sd < 0) {
944
perror("socket");
945
exitcode = EXIT_FAILURE;
946
goto end;
947
}
948
strcpy(network.ifr_name, interface); /* Spurious warning */
949
ret = ioctl(sd, SIOCGIFFLAGS, &network);
950
if(ret == -1){
951
perror("ioctl SIOCGIFFLAGS");
952
exitcode = EXIT_FAILURE;
953
goto end;
954
}
955
if((network.ifr_flags & IFF_UP) == 0){
956
network.ifr_flags |= IFF_UP;
957
ret = ioctl(sd, SIOCSIFFLAGS, &network);
958
if(ret == -1){
959
perror("ioctl SIOCSIFFLAGS");
960
exitcode = EXIT_FAILURE;
961
goto end;
962
}
963
}
964
close(sd);
965
}
966
967
if (not debug){
1081
if(not debug){
968
1082
avahi_set_log_function(empty_log);
969
1083
}
970
1084
973
1087
974
1088
/* Allocate main Avahi loop object */
975
1089
mc.simple_poll = avahi_simple_poll_new();
976
if (mc.simple_poll == NULL) {
1090
if(mc.simple_poll == NULL) {
977
1091
fprintf(stderr, "Avahi: Failed to create simple poll"
978
1092
" object.\n");
979
1093
exitcode = EXIT_FAILURE;
980
1094
goto end;
981
1095
}
982
1096
983
1097
{
984
1098
AvahiServerConfig config;
985
1099
/* Do not publish any local Zeroconf records */
988
1102
config.publish_addresses = 0;
989
1103
config.publish_workstation = 0;
990
1104
config.publish_domain = 0;
991
1105
992
1106
/* Allocate a new server */
993
1107
mc.server = avahi_server_new(avahi_simple_poll_get
994
1108
(mc.simple_poll), &config, NULL,
995
1109
NULL, &error);
996
1110
997
1111
/* Free the Avahi configuration data */
998
1112
avahi_server_config_free(&config);
999
1113
}
1000
1114
1001
1115
/* Check if creating the Avahi server object succeeded */
1002
if (mc.server == NULL) {
1116
if(mc.server == NULL) {
1003
1117
fprintf(stderr, "Failed to create Avahi server: %s\n",
1004
1118
avahi_strerror(error));
1005
1119
exitcode = EXIT_FAILURE;
1011
1125
AVAHI_PROTO_INET6,
1012
1126
"_mandos._tcp", NULL, 0,
1013
1127
browse_callback, &mc);
1014
if (sb == NULL) {
1128
if(sb == NULL) {
1015
1129
fprintf(stderr, "Failed to create service browser: %s\n",
1016
1130
avahi_strerror(avahi_server_errno(mc.server)));
1017
1131
exitcode = EXIT_FAILURE;
1019
1133
}
1020
1134
1021
1135
/* Run the main loop */
1022
1023
if (debug){
1136
1137
if(debug){
1024
1138
fprintf(stderr, "Starting Avahi loop search\n");
1025
1139
}
1026
1140
1027
1141
avahi_simple_poll_loop(mc.simple_poll);
1028
1142
1029
1143
end:
1030
1031
if (debug){
1144
1145
if(debug){
1032
1146
fprintf(stderr, "%s exiting\n", argv[0]);
1033
1147
}
1034
1148
1035
1149
/* Cleanup things */
1036
if (sb != NULL)
1150
if(sb != NULL)
1037
1151
avahi_s_service_browser_free(sb);
1038
1152
1039
if (mc.server != NULL)
1153
if(mc.server != NULL)
1040
1154
avahi_server_free(mc.server);
1041
1042
if (mc.simple_poll != NULL)
1155
1156
if(mc.simple_poll != NULL)
1043
1157
avahi_simple_poll_free(mc.simple_poll);
1044
free(pubkeyfile);
1045
free(seckeyfile);
1046
1047
if (gnutls_initalized){
1158
1159
if(gnutls_initialized){
1048
1160
gnutls_certificate_free_credentials(mc.cred);
1049
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
}
1050
1211
}
1051
1212
1052
1213
return exitcode;
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0