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- Committer: Björn Påhlsson
- Date: 2008-08-04 16:06:40 UTC
- mfrom: (42 mandos)
- mto: (24.1.154 mandos) (237.4.3 mandos-release)
- mto: This revision was merged to the branch mainline in revision 44.
- Revision ID: belorn@braxen-20080804160640-omzss34wcs708i0e
merge
- files added:
- ca.pem
- files removed:
- .bzr-builddeb
- debian
- debian/po
- files renamed:
- plugin-runner.c => plugbasedclient.c
- plugins.d/mandos-client.c => plugins.d/mandosclient.c
- plugins.d/password-prompt.c => plugins.d/passprompt.c
- mandos.conf => server.conf
- mandos => server.py
- files modified:
- Makefile
added
removed
plugins.d/mandosclient.c
1
1
/* -*- coding: utf-8 -*- */
2
2
/*
3
* Mandos-client - get and decrypt data from a Mandos server
3
* Mandos client - get and decrypt data from a Mandos server
4
4
*
5
5
* This program is partly derived from an example program for an Avahi
6
6
* service browser, downloaded from
9
9
* "browse_callback", and parts of "main".
10
10
*
11
11
* Everything else is
12
* Copyright © 2008,2009 Teddy Hogeborn
13
* Copyright © 2008,2009 Björn Påhlsson
12
* Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
14
13
*
15
14
* This program is free software: you can redistribute it and/or
16
15
* modify it under the terms of the GNU General Public License as
33
32
#define _LARGEFILE_SOURCE
34
33
#define _FILE_OFFSET_BITS 64
35
34
36
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
37
36
38
#include <stdio.h> /* fprintf(), stderr, fwrite(),
39
stdout, ferror(), sscanf */
40
#include <stdint.h> /* uint16_t, uint32_t */
41
#include <stddef.h> /* NULL, size_t, ssize_t */
42
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
43
srand() */
44
#include <stdbool.h> /* bool, true */
45
#include <string.h> /* memset(), strcmp(), strlen(),
46
strerror(), asprintf(), strcpy() */
47
#include <sys/ioctl.h> /* ioctl */
48
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
49
sockaddr_in6, PF_INET6,
50
SOCK_STREAM, INET6_ADDRSTRLEN,
51
uid_t, gid_t, open(), opendir(),
52
DIR */
53
#include <sys/stat.h> /* open() */
54
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
55
struct in6_addr, inet_pton(),
56
connect() */
57
#include <fcntl.h> /* open() */
58
#include <dirent.h> /* opendir(), struct dirent, readdir()
59
*/
60
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
61
#include <assert.h> /* assert() */
62
#include <errno.h> /* perror(), errno */
63
#include <time.h> /* time(), nanosleep() */
37
#include <stdio.h>
38
#include <assert.h>
39
#include <stdlib.h>
40
#include <time.h>
41
#include <net/if.h> /* if_nametoindex */
42
#include <sys/ioctl.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
43
SIOCSIFFLAGS */
64
44
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
65
SIOCSIFFLAGS, if_indextoname(),
66
if_nametoindex(), IF_NAMESIZE */
67
#include <netinet/in.h>
68
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
69
getuid(), getgid(), setuid(),
70
setgid() */
71
#include <arpa/inet.h> /* inet_pton(), htons */
72
#include <iso646.h> /* not, and, or */
73
#include <argp.h> /* struct argp_option, error_t, struct
74
argp_state, struct argp,
75
argp_parse(), ARGP_KEY_ARG,
76
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
77
#include <sys/klog.h> /* klogctl() */
45
SIOCSIFFLAGS */
78
46
79
/* Avahi */
80
/* All Avahi types, constants and functions
81
Avahi*, avahi_*,
82
AVAHI_* */
83
47
#include <avahi-core/core.h>
84
48
#include <avahi-core/lookup.h>
85
49
#include <avahi-core/log.h>
87
51
#include <avahi-common/malloc.h>
88
52
#include <avahi-common/error.h>
89
53
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 */
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 */
99
60
61
#include <unistd.h> /* close() */
62
#include <netinet/in.h>
63
#include <stdbool.h> /* true */
64
#include <string.h> /* memset */
65
#include <arpa/inet.h> /* inet_pton() */
66
#include <iso646.h> /* not */
67
#include <net/if.h> /* IF_NAMESIZE */
68
#include <argp.h> /* struct argp_option,
69
struct argp_state, struct argp,
70
argp_parse() */
100
71
/* GPGME */
101
#include <gpgme.h> /* All GPGME types, constants and
102
functions:
103
gpgme_*
104
GPGME_PROTOCOL_OpenPGP,
105
GPG_ERR_NO_* */
72
#include <errno.h> /* perror() */
73
#include <gpgme.h>
106
74
107
75
#define BUFFER_SIZE 256
108
76
109
#define PATHDIR "/conf/conf.d/mandos"
110
#define SECKEY "seckey.txt"
111
#define PUBKEY "pubkey.txt"
112
113
77
bool debug = false;
78
static const char *keydir = "/conf/conf.d/mandos";
79
const char *argp_program_version = "mandosclient 0.9";
80
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
114
81
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
82
118
83
/* Used for passing in values through the Avahi callback functions */
119
84
typedef struct {
123
88
unsigned int dh_bits;
124
89
gnutls_dh_params_t dh_params;
125
90
const char *priority;
126
gpgme_ctx_t ctx;
127
91
} mandos_context;
128
92
129
/*
130
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
93
/* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
131
94
* "buffer_capacity" is how much is currently allocated,
132
* "buffer_length" is how much is already used.
133
*/
95
* "buffer_length" is how much is already used. */
134
96
size_t adjustbuffer(char **buffer, size_t buffer_length,
135
97
size_t buffer_capacity){
136
if(buffer_length + BUFFER_SIZE > buffer_capacity){
98
if (buffer_length + BUFFER_SIZE > buffer_capacity){
137
99
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
138
if(buffer == NULL){
100
if (buffer == NULL){
139
101
return 0;
140
102
}
141
103
buffer_capacity += BUFFER_SIZE;
144
106
}
145
107
146
108
/*
147
* Initialize GPGME.
109
* Decrypt OpenPGP data using keyrings in HOMEDIR.
110
* Returns -1 on error
148
111
*/
149
static bool init_gpgme(mandos_context *mc, const char *seckey,
150
const char *pubkey, const char *tempdir){
151
int ret;
112
static ssize_t pgp_packet_decrypt (const char *cryptotext,
113
size_t crypto_size,
114
char **plaintext,
115
const char *homedir){
116
gpgme_data_t dh_crypto, dh_plain;
117
gpgme_ctx_t ctx;
152
118
gpgme_error_t rc;
119
ssize_t ret;
120
size_t plaintext_capacity = 0;
121
ssize_t plaintext_length = 0;
153
122
gpgme_engine_info_t engine_info;
154
123
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");
124
if (debug){
125
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
193
126
}
194
127
195
128
/* Init GPGME */
196
129
gpgme_check_version(NULL);
197
130
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
198
if(rc != GPG_ERR_NO_ERROR){
131
if (rc != GPG_ERR_NO_ERROR){
199
132
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
200
133
gpgme_strsource(rc), gpgme_strerror(rc));
201
return false;
134
return -1;
202
135
}
203
136
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){
137
/* Set GPGME home directory for the OpenPGP engine only */
138
rc = gpgme_get_engine_info (&engine_info);
139
if (rc != GPG_ERR_NO_ERROR){
207
140
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
208
141
gpgme_strsource(rc), gpgme_strerror(rc));
209
return false;
142
return -1;
210
143
}
211
144
while(engine_info != NULL){
212
145
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
213
146
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
214
engine_info->file_name, tempdir);
147
engine_info->file_name, homedir);
215
148
break;
216
149
}
217
150
engine_info = engine_info->next;
218
151
}
219
152
if(engine_info == NULL){
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");
153
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
154
return -1;
255
155
}
256
156
257
157
/* Create new GPGME data buffer from memory cryptotext */
258
158
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
259
159
0);
260
if(rc != GPG_ERR_NO_ERROR){
160
if (rc != GPG_ERR_NO_ERROR){
261
161
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
262
162
gpgme_strsource(rc), gpgme_strerror(rc));
263
163
return -1;
265
165
266
166
/* Create new empty GPGME data buffer for the plaintext */
267
167
rc = gpgme_data_new(&dh_plain);
268
if(rc != GPG_ERR_NO_ERROR){
168
if (rc != GPG_ERR_NO_ERROR){
269
169
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
270
170
gpgme_strsource(rc), gpgme_strerror(rc));
271
171
gpgme_data_release(dh_crypto);
272
172
return -1;
273
173
}
274
174
175
/* Create new GPGME "context" */
176
rc = gpgme_new(&ctx);
177
if (rc != GPG_ERR_NO_ERROR){
178
fprintf(stderr, "bad gpgme_new: %s: %s\n",
179
gpgme_strsource(rc), gpgme_strerror(rc));
180
plaintext_length = -1;
181
goto decrypt_end;
182
}
183
275
184
/* Decrypt data from the cryptotext data buffer to the plaintext
276
185
data buffer */
277
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
278
if(rc != GPG_ERR_NO_ERROR){
186
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
187
if (rc != GPG_ERR_NO_ERROR){
279
188
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
280
189
gpgme_strsource(rc), gpgme_strerror(rc));
281
190
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
}
310
191
goto decrypt_end;
311
192
}
312
193
314
195
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
315
196
}
316
197
198
if (debug){
199
gpgme_decrypt_result_t result;
200
result = gpgme_op_decrypt_result(ctx);
201
if (result == NULL){
202
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
203
} else {
204
fprintf(stderr, "Unsupported algorithm: %s\n",
205
result->unsupported_algorithm);
206
fprintf(stderr, "Wrong key usage: %d\n",
207
result->wrong_key_usage);
208
if(result->file_name != NULL){
209
fprintf(stderr, "File name: %s\n", result->file_name);
210
}
211
gpgme_recipient_t recipient;
212
recipient = result->recipients;
213
if(recipient){
214
while(recipient != NULL){
215
fprintf(stderr, "Public key algorithm: %s\n",
216
gpgme_pubkey_algo_name(recipient->pubkey_algo));
217
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
218
fprintf(stderr, "Secret key available: %s\n",
219
recipient->status == GPG_ERR_NO_SECKEY
220
? "No" : "Yes");
221
recipient = recipient->next;
222
}
223
}
224
}
225
}
226
317
227
/* Seek back to the beginning of the GPGME plaintext data buffer */
318
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
319
perror("gpgme_data_seek");
228
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
229
perror("pgpme_data_seek");
320
230
plaintext_length = -1;
321
231
goto decrypt_end;
322
232
}
326
236
plaintext_capacity = adjustbuffer(plaintext,
327
237
(size_t)plaintext_length,
328
238
plaintext_capacity);
329
if(plaintext_capacity == 0){
239
if (plaintext_capacity == 0){
330
240
perror("adjustbuffer");
331
241
plaintext_length = -1;
332
242
goto decrypt_end;
335
245
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
336
246
BUFFER_SIZE);
337
247
/* Print the data, if any */
338
if(ret == 0){
248
if (ret == 0){
339
249
/* EOF */
340
250
break;
341
251
}
346
256
}
347
257
plaintext_length += ret;
348
258
}
349
259
350
260
if(debug){
351
261
fprintf(stderr, "Decrypted password is: ");
352
262
for(ssize_t i = 0; i < plaintext_length; i++){
365
275
return plaintext_length;
366
276
}
367
277
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)
278
static const char * safer_gnutls_strerror (int value) {
279
const char *ret = gnutls_strerror (value);
280
if (ret == NULL)
372
281
ret = "(unknown)";
373
282
return ret;
374
283
}
380
289
}
381
290
382
291
static int init_gnutls_global(mandos_context *mc,
383
const char *pubkeyfilename,
384
const char *seckeyfilename){
292
const char *pubkeyfile,
293
const char *seckeyfile){
385
294
int ret;
386
295
387
296
if(debug){
388
297
fprintf(stderr, "Initializing GnuTLS\n");
389
298
}
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));
299
300
if ((ret = gnutls_global_init ())
301
!= GNUTLS_E_SUCCESS) {
302
fprintf (stderr, "GnuTLS global_init: %s\n",
303
safer_gnutls_strerror(ret));
395
304
return -1;
396
305
}
397
306
398
if(debug){
307
if (debug){
399
308
/* "Use a log level over 10 to enable all debugging options."
400
309
* - GnuTLS manual
401
310
*/
404
313
}
405
314
406
315
/* OpenPGP credentials */
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();
316
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
317
!= GNUTLS_E_SUCCESS) {
318
fprintf (stderr, "GnuTLS memory error: %s\n",
319
safer_gnutls_strerror(ret));
415
320
return -1;
416
321
}
417
322
418
323
if(debug){
419
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
420
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
421
seckeyfilename);
324
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
325
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
326
seckeyfile);
422
327
}
423
328
424
329
ret = gnutls_certificate_set_openpgp_key_file
425
(mc->cred, pubkeyfilename, seckeyfilename,
426
GNUTLS_OPENPGP_FMT_BASE64);
427
if(ret != GNUTLS_E_SUCCESS) {
330
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
331
if (ret != GNUTLS_E_SUCCESS) {
428
332
fprintf(stderr,
429
333
"Error[%d] while reading the OpenPGP key pair ('%s',"
430
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
431
fprintf(stderr, "The GnuTLS error is: %s\n",
334
" '%s')\n", ret, pubkeyfile, seckeyfile);
335
fprintf(stdout, "The GnuTLS error is: %s\n",
432
336
safer_gnutls_strerror(ret));
433
goto globalfail;
337
return -1;
434
338
}
435
339
436
340
/* GnuTLS server initialization */
437
341
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;
342
if (ret != GNUTLS_E_SUCCESS) {
343
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
344
" %s\n", safer_gnutls_strerror(ret));
345
return -1;
442
346
}
443
347
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;
348
if (ret != GNUTLS_E_SUCCESS) {
349
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
350
safer_gnutls_strerror(ret));
351
return -1;
448
352
}
449
353
450
354
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
451
355
452
356
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
357
}
461
358
462
359
static int init_gnutls_session(mandos_context *mc,
464
361
int ret;
465
362
/* GnuTLS session creation */
466
363
ret = gnutls_init(session, GNUTLS_SERVER);
467
if(ret != GNUTLS_E_SUCCESS){
364
if (ret != GNUTLS_E_SUCCESS){
468
365
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
469
366
safer_gnutls_strerror(ret));
470
367
}
472
369
{
473
370
const char *err;
474
371
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
475
if(ret != GNUTLS_E_SUCCESS) {
372
if (ret != GNUTLS_E_SUCCESS) {
476
373
fprintf(stderr, "Syntax error at: %s\n", err);
477
374
fprintf(stderr, "GnuTLS error: %s\n",
478
375
safer_gnutls_strerror(ret));
479
gnutls_deinit(*session);
480
376
return -1;
481
377
}
482
378
}
483
379
484
380
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
485
381
mc->cred);
486
if(ret != GNUTLS_E_SUCCESS) {
382
if (ret != GNUTLS_E_SUCCESS) {
487
383
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
488
384
safer_gnutls_strerror(ret));
489
gnutls_deinit(*session);
490
385
return -1;
491
386
}
492
387
493
388
/* ignore client certificate if any. */
494
gnutls_certificate_server_set_request(*session,
495
GNUTLS_CERT_IGNORE);
389
gnutls_certificate_server_set_request (*session,
390
GNUTLS_CERT_IGNORE);
496
391
497
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
392
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
498
393
499
394
return 0;
500
395
}
508
403
AvahiIfIndex if_index,
509
404
mandos_context *mc){
510
405
int ret, tcp_sd;
511
ssize_t sret;
512
406
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
513
407
char *buffer = NULL;
514
408
char *decrypted_buffer;
520
414
char interface[IF_NAMESIZE];
521
415
gnutls_session_t session;
522
416
523
ret = init_gnutls_session(mc, &session);
524
if(ret != 0){
417
ret = init_gnutls_session (mc, &session);
418
if (ret != 0){
525
419
return -1;
526
420
}
527
421
528
422
if(debug){
529
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
530
"\n", ip, port);
423
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
424
ip, port);
531
425
}
532
426
533
427
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
535
429
perror("socket");
536
430
return -1;
537
431
}
538
432
539
433
if(debug){
540
434
if(if_indextoname((unsigned int)if_index, interface) == NULL){
541
435
perror("if_indextoname");
544
438
fprintf(stderr, "Binding to interface %s\n", interface);
545
439
}
546
440
547
memset(&to, 0, sizeof(to));
441
memset(&to,0,sizeof(to)); /* Spurious warning */
548
442
to.in6.sin6_family = AF_INET6;
549
443
/* It would be nice to have a way to detect if we were passed an
550
444
IPv4 address here. Now we assume an IPv6 address. */
551
445
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
552
if(ret < 0 ){
446
if (ret < 0 ){
553
447
perror("inet_pton");
554
448
return -1;
555
449
}
557
451
fprintf(stderr, "Bad address: %s\n", ip);
558
452
return -1;
559
453
}
560
to.in6.sin6_port = htons(port); /* Spurious warnings from
561
-Wconversion and
562
-Wunreachable-code */
454
to.in6.sin6_port = htons(port); /* Spurious warning */
563
455
564
456
to.in6.sin6_scope_id = (uint32_t)if_index;
565
457
566
458
if(debug){
567
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
568
port);
459
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
569
460
char addrstr[INET6_ADDRSTRLEN] = "";
570
461
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
571
462
sizeof(addrstr)) == NULL){
578
469
}
579
470
580
471
ret = connect(tcp_sd, &to.in, sizeof(to));
581
if(ret < 0){
472
if (ret < 0){
582
473
perror("connect");
583
474
return -1;
584
475
}
585
476
586
477
const char *out = mandos_protocol_version;
587
478
written = 0;
588
while(true){
479
while (true){
589
480
size_t out_size = strlen(out);
590
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
481
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
591
482
out_size - written));
592
if(ret == -1){
483
if (ret == -1){
593
484
perror("write");
594
485
retval = -1;
595
486
goto mandos_end;
598
489
if(written < out_size){
599
490
continue;
600
491
} else {
601
if(out == mandos_protocol_version){
492
if (out == mandos_protocol_version){
602
493
written = 0;
603
494
out = "\r\n";
604
495
} else {
606
497
}
607
498
}
608
499
}
609
500
610
501
if(debug){
611
502
fprintf(stderr, "Establishing TLS session with %s\n", ip);
612
503
}
613
504
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){
505
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
506
507
ret = gnutls_handshake (session);
508
509
if (ret != GNUTLS_E_SUCCESS){
621
510
if(debug){
622
511
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
623
gnutls_perror(ret);
512
gnutls_perror (ret);
624
513
}
625
514
retval = -1;
626
515
goto mandos_end;
632
521
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
633
522
ip);
634
523
}
635
524
636
525
while(true){
637
526
buffer_capacity = adjustbuffer(&buffer, buffer_length,
638
527
buffer_capacity);
639
if(buffer_capacity == 0){
528
if (buffer_capacity == 0){
640
529
perror("adjustbuffer");
641
530
retval = -1;
642
531
goto mandos_end;
643
532
}
644
533
645
sret = gnutls_record_recv(session, buffer+buffer_length,
646
BUFFER_SIZE);
647
if(sret == 0){
534
ret = gnutls_record_recv(session, buffer+buffer_length,
535
BUFFER_SIZE);
536
if (ret == 0){
648
537
break;
649
538
}
650
if(sret < 0){
651
switch(sret){
539
if (ret < 0){
540
switch(ret){
652
541
case GNUTLS_E_INTERRUPTED:
653
542
case GNUTLS_E_AGAIN:
654
543
break;
655
544
case GNUTLS_E_REHANDSHAKE:
656
do{
657
ret = gnutls_handshake(session);
658
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
659
if(ret < 0){
545
ret = gnutls_handshake (session);
546
if (ret < 0){
660
547
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
661
gnutls_perror(ret);
548
gnutls_perror (ret);
662
549
retval = -1;
663
550
goto mandos_end;
664
551
}
667
554
fprintf(stderr, "Unknown error while reading data from"
668
555
" encrypted session with Mandos server\n");
669
556
retval = -1;
670
gnutls_bye(session, GNUTLS_SHUT_RDWR);
557
gnutls_bye (session, GNUTLS_SHUT_RDWR);
671
558
goto mandos_end;
672
559
}
673
560
} else {
674
buffer_length += (size_t) sret;
561
buffer_length += (size_t) ret;
675
562
}
676
563
}
677
564
679
566
fprintf(stderr, "Closing TLS session\n");
680
567
}
681
568
682
gnutls_bye(session, GNUTLS_SHUT_RDWR);
569
gnutls_bye (session, GNUTLS_SHUT_RDWR);
683
570
684
if(buffer_length > 0){
685
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
571
if (buffer_length > 0){
572
decrypted_buffer_size = pgp_packet_decrypt(buffer,
686
573
buffer_length,
687
&decrypted_buffer);
688
if(decrypted_buffer_size >= 0){
574
&decrypted_buffer,
575
keydir);
576
if (decrypted_buffer_size >= 0){
689
577
written = 0;
690
578
while(written < (size_t) decrypted_buffer_size){
691
ret = (int)fwrite(decrypted_buffer + written, 1,
692
(size_t)decrypted_buffer_size - written,
693
stdout);
579
ret = (int)fwrite (decrypted_buffer + written, 1,
580
(size_t)decrypted_buffer_size - written,
581
stdout);
694
582
if(ret == 0 and ferror(stdout)){
695
583
if(debug){
696
584
fprintf(stderr, "Error writing encrypted data: %s\n",
705
593
} else {
706
594
retval = -1;
707
595
}
708
} else {
709
retval = -1;
710
596
}
711
597
712
598
/* Shutdown procedure */
713
599
714
600
mandos_end:
715
601
free(buffer);
716
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
717
if(ret == -1){
718
perror("close");
719
}
720
gnutls_deinit(session);
602
close(tcp_sd);
603
gnutls_deinit (session);
604
gnutls_certificate_free_credentials (mc->cred);
605
gnutls_global_deinit ();
721
606
return retval;
722
607
}
723
608
736
621
flags,
737
622
void* userdata) {
738
623
mandos_context *mc = userdata;
739
assert(r);
624
assert(r); /* Spurious warning */
740
625
741
626
/* Called whenever a service has been resolved successfully or
742
627
timed out */
743
628
744
switch(event) {
629
switch (event) {
745
630
default:
746
631
case AVAHI_RESOLVER_FAILURE:
747
632
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
754
639
char ip[AVAHI_ADDRESS_STR_MAX];
755
640
avahi_address_snprint(ip, sizeof(ip), address);
756
641
if(debug){
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);
642
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
643
" port %d\n", name, host_name, ip, interface, port);
760
644
}
761
645
int ret = start_mandos_communication(ip, port, interface, mc);
762
if(ret == 0){
763
avahi_simple_poll_quit(mc->simple_poll);
646
if (ret == 0){
647
exit(EXIT_SUCCESS);
764
648
}
765
649
}
766
650
}
778
662
flags,
779
663
void* userdata) {
780
664
mandos_context *mc = userdata;
781
assert(b);
665
assert(b); /* Spurious warning */
782
666
783
667
/* Called whenever a new services becomes available on the LAN or
784
668
is removed from the LAN */
785
669
786
switch(event) {
670
switch (event) {
787
671
default:
788
672
case AVAHI_BROWSER_FAILURE:
789
673
798
682
the callback function is called the Avahi server will free the
799
683
resolver for us. */
800
684
801
if(!(avahi_s_service_resolver_new(mc->server, interface,
685
if (!(avahi_s_service_resolver_new(mc->server, interface,
802
686
protocol, name, type, domain,
803
687
AVAHI_PROTO_INET6, 0,
804
688
resolve_callback, mc)))
818
702
}
819
703
}
820
704
705
/* Combines file name and path and returns the malloced new
706
string. some sane checks could/should be added */
707
static const char *combinepath(const char *first, const char *second){
708
size_t f_len = strlen(first);
709
size_t s_len = strlen(second);
710
char *tmp = malloc(f_len + s_len + 2);
711
if (tmp == NULL){
712
return NULL;
713
}
714
if(f_len > 0){
715
memcpy(tmp, first, f_len); /* Spurious warning */
716
}
717
tmp[f_len] = '/';
718
if(s_len > 0){
719
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
720
}
721
tmp[f_len + 1 + s_len] = '\0';
722
return tmp;
723
}
724
725
821
726
int main(int argc, char *argv[]){
822
727
AvahiSServiceBrowser *sb = NULL;
823
728
int error;
824
729
int ret;
825
intmax_t tmpmax;
826
int numchars;
827
730
int exitcode = EXIT_SUCCESS;
828
731
const char *interface = "eth0";
829
732
struct ifreq network;
831
734
uid_t uid;
832
735
gid_t gid;
833
736
char *connect_to = NULL;
834
char tempdir[] = "/tmp/mandosXXXXXX";
835
737
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
836
const char *seckey = PATHDIR "/" SECKEY;
837
const char *pubkey = PATHDIR "/" PUBKEY;
838
738
const char *pubkeyfile = "pubkey.txt";
739
const char *seckeyfile = "seckey.txt";
839
740
mandos_context mc = { .simple_poll = NULL, .server = NULL,
840
.dh_bits = 1024, .priority = "SECURE256"
841
":!CTYPE-X.509:+CTYPE-OPENPGP" };
842
bool gnutls_initalized = false;
843
bool gpgme_initalized = false;
844
double delay = 2.5;
741
.dh_bits = 1024, .priority = "SECURE256"};
845
742
846
743
{
847
744
struct argp_option options[] = {
848
745
{ .name = "debug", .key = 128,
849
746
.doc = "Debug mode", .group = 3 },
850
747
{ .name = "connect", .key = 'c',
851
.arg = "ADDRESS:PORT",
852
.doc = "Connect directly to a specific Mandos server",
748
.arg = "IP",
749
.doc = "Connect directly to a sepcified mandos server",
853
750
.group = 1 },
854
751
{ .name = "interface", .key = 'i',
855
.arg = "NAME",
856
.doc = "Interface that will be used to search for Mandos"
857
" servers",
752
.arg = "INTERFACE",
753
.doc = "Interface that Avahi will conntect through",
754
.group = 1 },
755
{ .name = "keydir", .key = 'd',
756
.arg = "KEYDIR",
757
.doc = "Directory where the openpgp keyring is",
858
758
.group = 1 },
859
759
{ .name = "seckey", .key = 's',
860
.arg = "FILE",
861
.doc = "OpenPGP secret key file base name",
760
.arg = "SECKEY",
761
.doc = "Secret openpgp key for gnutls authentication",
862
762
.group = 1 },
863
763
{ .name = "pubkey", .key = 'p',
864
.arg = "FILE",
865
.doc = "OpenPGP public key file base name",
764
.arg = "PUBKEY",
765
.doc = "Public openpgp key for gnutls authentication",
866
766
.group = 2 },
867
767
{ .name = "dh-bits", .key = 129,
868
768
.arg = "BITS",
869
.doc = "Bit length of the prime number used in the"
870
" Diffie-Hellman key exchange",
769
.doc = "dh-bits to use in gnutls communication",
871
770
.group = 2 },
872
771
{ .name = "priority", .key = 130,
873
.arg = "STRING",
874
.doc = "GnuTLS priority string for the TLS handshake",
875
.group = 1 },
876
{ .name = "delay", .key = 131,
877
.arg = "SECONDS",
878
.doc = "Maximum delay to wait for interface startup",
879
.group = 2 },
772
.arg = "PRIORITY",
773
.doc = "GNUTLS priority", .group = 1 },
880
774
{ .name = NULL }
881
775
};
776
882
777
883
error_t parse_opt(int key, char *arg,
884
struct argp_state *state) {
885
switch(key) {
886
case 128: /* --debug */
778
error_t parse_opt (int key, char *arg,
779
struct argp_state *state) {
780
/* Get the INPUT argument from `argp_parse', which we know is
781
a pointer to our plugin list pointer. */
782
switch (key) {
783
case 128:
887
784
debug = true;
888
785
break;
889
case 'c': /* --connect */
786
case 'c':
890
787
connect_to = arg;
891
788
break;
892
case 'i': /* --interface */
789
case 'i':
893
790
interface = arg;
894
791
break;
895
case 's': /* --seckey */
896
seckey = arg;
897
break;
898
case 'p': /* --pubkey */
899
pubkey = arg;
900
break;
901
case 129: /* --dh-bits */
902
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
903
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
904
or arg[numchars] != '\0'){
905
fprintf(stderr, "Bad number of DH bits\n");
792
case 'd':
793
keydir = arg;
794
break;
795
case 's':
796
seckeyfile = arg;
797
break;
798
case 'p':
799
pubkeyfile = arg;
800
break;
801
case 129:
802
errno = 0;
803
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
804
if (errno){
805
perror("strtol");
906
806
exit(EXIT_FAILURE);
907
807
}
908
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
909
808
break;
910
case 130: /* --priority */
809
case 130:
911
810
mc.priority = arg;
912
811
break;
913
case 131: /* --delay */
914
ret = sscanf(arg, "%lf%n", &delay, &numchars);
915
if(ret < 1 or arg[numchars] != '\0'){
916
fprintf(stderr, "Bad delay\n");
917
exit(EXIT_FAILURE);
918
}
919
break;
920
812
case ARGP_KEY_ARG:
921
argp_usage(state);
922
case ARGP_KEY_END:
813
argp_usage (state);
923
814
break;
815
case ARGP_KEY_END:
816
break;
924
817
default:
925
818
return ARGP_ERR_UNKNOWN;
926
819
}
927
820
return 0;
928
821
}
929
822
930
823
struct argp argp = { .options = options, .parser = parse_opt,
931
824
.args_doc = "",
932
825
.doc = "Mandos client -- Get and decrypt"
933
" passwords from a Mandos server" };
934
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
935
if(ret == ARGP_ERR_UNKNOWN){
936
fprintf(stderr, "Unknown error while parsing arguments\n");
937
exitcode = EXIT_FAILURE;
938
goto end;
939
}
940
}
941
942
/* If the interface is down, bring it up */
943
{
944
// Lower kernel loglevel to KERN_NOTICE to avoid
945
// KERN_INFO messages to mess up the prompt
946
ret = klogctl(8, NULL, 5);
947
if(ret == -1){
948
perror("klogctl");
949
}
950
951
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
952
if(sd < 0) {
953
perror("socket");
954
exitcode = EXIT_FAILURE;
955
ret = klogctl(7, NULL, 0);
956
if(ret == -1){
957
perror("klogctl");
958
}
959
goto end;
960
}
961
strcpy(network.ifr_name, interface);
962
ret = ioctl(sd, SIOCGIFFLAGS, &network);
963
if(ret == -1){
964
perror("ioctl SIOCGIFFLAGS");
965
ret = klogctl(7, NULL, 0);
966
if(ret == -1){
967
perror("klogctl");
968
}
969
exitcode = EXIT_FAILURE;
970
goto end;
971
}
972
if((network.ifr_flags & IFF_UP) == 0){
973
network.ifr_flags |= IFF_UP;
974
ret = ioctl(sd, SIOCSIFFLAGS, &network);
975
if(ret == -1){
976
perror("ioctl SIOCSIFFLAGS");
977
exitcode = EXIT_FAILURE;
978
ret = klogctl(7, NULL, 0);
979
if(ret == -1){
980
perror("klogctl");
981
}
982
goto end;
983
}
984
}
985
// sleep checking until interface is running
986
for(int i=0; i < delay * 4; i++){
987
ret = ioctl(sd, SIOCGIFFLAGS, &network);
988
if(ret == -1){
989
perror("ioctl SIOCGIFFLAGS");
990
} else if(network.ifr_flags & IFF_RUNNING){
991
break;
992
}
993
struct timespec sleeptime = { .tv_nsec = 250000000 };
994
nanosleep(&sleeptime, NULL);
995
}
996
ret = (int)TEMP_FAILURE_RETRY(close(sd));
997
if(ret == -1){
998
perror("close");
999
}
1000
// Restores kernel loglevel to default
1001
ret = klogctl(7, NULL, 0);
1002
if(ret == -1){
1003
perror("klogctl");
1004
}
1005
}
1006
826
" passwords from mandos server" };
827
argp_parse (&argp, argc, argv, 0, 0, NULL);
828
}
829
830
pubkeyfile = combinepath(keydir, pubkeyfile);
831
if (pubkeyfile == NULL){
832
perror("combinepath");
833
exitcode = EXIT_FAILURE;
834
goto end;
835
}
836
837
seckeyfile = combinepath(keydir, seckeyfile);
838
if (seckeyfile == NULL){
839
perror("combinepath");
840
goto end;
841
}
842
843
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
844
if (ret == -1){
845
fprintf(stderr, "init_gnutls_global\n");
846
goto end;
847
}
848
1007
849
uid = getuid();
1008
850
gid = getgid();
1009
851
1010
852
ret = setuid(uid);
1011
if(ret == -1){
853
if (ret == -1){
1012
854
perror("setuid");
1013
855
}
1014
856
1015
857
setgid(gid);
1016
if(ret == -1){
858
if (ret == -1){
1017
859
perror("setgid");
1018
860
}
1019
861
1020
ret = init_gnutls_global(&mc, pubkey, seckey);
1021
if(ret == -1){
1022
fprintf(stderr, "init_gnutls_global failed\n");
1023
exitcode = EXIT_FAILURE;
1024
goto end;
1025
} else {
1026
gnutls_initalized = true;
1027
}
1028
1029
if(mkdtemp(tempdir) == NULL){
1030
perror("mkdtemp");
1031
tempdir[0] = '\0';
1032
goto end;
1033
}
1034
1035
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
1036
fprintf(stderr, "gpgme_initalized failed\n");
1037
exitcode = EXIT_FAILURE;
1038
goto end;
1039
} else {
1040
gpgme_initalized = true;
1041
}
1042
1043
862
if_index = (AvahiIfIndex) if_nametoindex(interface);
1044
863
if(if_index == 0){
1045
864
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1055
874
exitcode = EXIT_FAILURE;
1056
875
goto end;
1057
876
}
1058
uint16_t port;
1059
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1060
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1061
or address[numchars+1] != '\0'){
1062
fprintf(stderr, "Bad port number\n");
877
errno = 0;
878
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
879
if(errno){
880
perror("Bad port number");
1063
881
exitcode = EXIT_FAILURE;
1064
882
goto end;
1065
883
}
1066
port = (uint16_t)tmpmax;
1067
884
*address = '\0';
1068
885
address = connect_to;
1069
886
ret = start_mandos_communication(address, port, if_index, &mc);
1075
892
goto end;
1076
893
}
1077
894
1078
if(not debug){
895
/* If the interface is down, bring it up */
896
{
897
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
898
if(sd < 0) {
899
perror("socket");
900
exitcode = EXIT_FAILURE;
901
goto end;
902
}
903
strcpy(network.ifr_name, interface); /* Spurious warning */
904
ret = ioctl(sd, SIOCGIFFLAGS, &network);
905
if(ret == -1){
906
perror("ioctl SIOCGIFFLAGS");
907
exitcode = EXIT_FAILURE;
908
goto end;
909
}
910
if((network.ifr_flags & IFF_UP) == 0){
911
network.ifr_flags |= IFF_UP;
912
ret = ioctl(sd, SIOCSIFFLAGS, &network);
913
if(ret == -1){
914
perror("ioctl SIOCSIFFLAGS");
915
exitcode = EXIT_FAILURE;
916
goto end;
917
}
918
}
919
close(sd);
920
}
921
922
if (not debug){
1079
923
avahi_set_log_function(empty_log);
1080
924
}
1081
925
1084
928
1085
929
/* Allocate main Avahi loop object */
1086
930
mc.simple_poll = avahi_simple_poll_new();
1087
if(mc.simple_poll == NULL) {
931
if (mc.simple_poll == NULL) {
1088
932
fprintf(stderr, "Avahi: Failed to create simple poll"
1089
933
" object.\n");
1090
934
exitcode = EXIT_FAILURE;
1091
935
goto end;
1092
936
}
1093
937
1094
938
{
1095
939
AvahiServerConfig config;
1096
940
/* Do not publish any local Zeroconf records */
1099
943
config.publish_addresses = 0;
1100
944
config.publish_workstation = 0;
1101
945
config.publish_domain = 0;
1102
946
1103
947
/* Allocate a new server */
1104
948
mc.server = avahi_server_new(avahi_simple_poll_get
1105
949
(mc.simple_poll), &config, NULL,
1106
950
NULL, &error);
1107
951
1108
952
/* Free the Avahi configuration data */
1109
953
avahi_server_config_free(&config);
1110
954
}
1111
955
1112
956
/* Check if creating the Avahi server object succeeded */
1113
if(mc.server == NULL) {
957
if (mc.server == NULL) {
1114
958
fprintf(stderr, "Failed to create Avahi server: %s\n",
1115
959
avahi_strerror(error));
1116
960
exitcode = EXIT_FAILURE;
1122
966
AVAHI_PROTO_INET6,
1123
967
"_mandos._tcp", NULL, 0,
1124
968
browse_callback, &mc);
1125
if(sb == NULL) {
969
if (sb == NULL) {
1126
970
fprintf(stderr, "Failed to create service browser: %s\n",
1127
971
avahi_strerror(avahi_server_errno(mc.server)));
1128
972
exitcode = EXIT_FAILURE;
1130
974
}
1131
975
1132
976
/* Run the main loop */
1133
1134
if(debug){
977
978
if (debug){
1135
979
fprintf(stderr, "Starting Avahi loop search\n");
1136
980
}
1137
981
1138
982
avahi_simple_poll_loop(mc.simple_poll);
1139
983
1140
984
end:
1141
1142
if(debug){
985
986
if (debug){
1143
987
fprintf(stderr, "%s exiting\n", argv[0]);
1144
988
}
1145
989
1146
990
/* Cleanup things */
1147
if(sb != NULL)
991
if (sb != NULL)
1148
992
avahi_s_service_browser_free(sb);
1149
993
1150
if(mc.server != NULL)
994
if (mc.server != NULL)
1151
995
avahi_server_free(mc.server);
1152
1153
if(mc.simple_poll != NULL)
996
997
if (mc.simple_poll != NULL)
1154
998
avahi_simple_poll_free(mc.simple_poll);
1155
1156
if(gnutls_initalized){
1157
gnutls_certificate_free_credentials(mc.cred);
1158
gnutls_global_deinit();
1159
gnutls_dh_params_deinit(mc.dh_params);
1160
}
1161
1162
if(gpgme_initalized){
1163
gpgme_release(mc.ctx);
1164
}
1165
1166
/* Removes the temp directory used by GPGME */
1167
if(tempdir[0] != '\0'){
1168
DIR *d;
1169
struct dirent *direntry;
1170
d = opendir(tempdir);
1171
if(d == NULL){
1172
if(errno != ENOENT){
1173
perror("opendir");
1174
}
1175
} else {
1176
while(true){
1177
direntry = readdir(d);
1178
if(direntry == NULL){
1179
break;
1180
}
1181
if(direntry->d_type == DT_REG){
1182
char *fullname = NULL;
1183
ret = asprintf(&fullname, "%s/%s", tempdir,
1184
direntry->d_name);
1185
if(ret < 0){
1186
perror("asprintf");
1187
continue;
1188
}
1189
ret = unlink(fullname);
1190
if(ret == -1){
1191
fprintf(stderr, "unlink(\"%s\"): %s",
1192
fullname, strerror(errno));
1193
}
1194
free(fullname);
1195
}
1196
}
1197
closedir(d);
1198
}
1199
ret = rmdir(tempdir);
1200
if(ret == -1 and errno != ENOENT){
1201
perror("rmdir");
1202
}
1203
}
1204
999
free(pubkeyfile);
1000
free(seckeyfile);
1001
1205
1002
return exitcode;
1206
1003
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0