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- Committer: Teddy Hogeborn
- Date: 2008-08-03 16:05:52 UTC
- Revision ID: teddy@fukt.bsnet.se-20080803160552-mvqy5klry3wn57x1
* plugins.d/mandosclient.c (initgnutls): Moved "err" variable into its
own code block.
(start_mandos_communication): Moved call to "initgnutls" to
beginning. Renamed label "exit" to
"mandos_end". Bug fix: set return
code if failure to realloc buffer.
Close TLS session as early as
possible.
(resolve_callback): Also print interface number when debugging.
(main): Moved "debug_int" and "config" into their own respective
code blocks.
own code block.
(start_mandos_communication): Moved call to "initgnutls" to
beginning. Renamed label "exit" to
"mandos_end". Bug fix: set return
code if failure to realloc buffer.
Close TLS session as early as
possible.
(resolve_callback): Also print interface number when debugging.
(main): Moved "debug_int" and "config" into their own respective
code blocks.
- 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() */
37
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() */
35
#include <stdio.h>
36
#include <assert.h>
37
#include <stdlib.h>
38
#include <time.h>
39
#include <net/if.h> /* if_nametoindex */
40
#include <sys/ioctl.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
41
SIOCSIFFLAGS */
64
42
#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 */
43
SIOCSIFFLAGS */
77
44
78
/* Avahi */
79
/* All Avahi types, constants and functions
80
Avahi*, avahi_*,
81
AVAHI_* */
82
45
#include <avahi-core/core.h>
83
46
#include <avahi-core/lookup.h>
84
47
#include <avahi-core/log.h>
86
49
#include <avahi-common/malloc.h>
87
50
#include <avahi-common/error.h>
88
51
89
/* GnuTLS */
90
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
91
functions:
92
gnutls_*
93
init_gnutls_session(),
94
GNUTLS_* */
95
#include <gnutls/openpgp.h>
96
/* gnutls_certificate_set_openpgp_key_file(),
97
GNUTLS_OPENPGP_FMT_BASE64 */
52
/* Mandos client part */
53
#include <sys/types.h> /* socket(), inet_pton() */
54
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
55
struct in6_addr, inet_pton() */
56
#include <gnutls/gnutls.h> /* All GnuTLS stuff */
57
#include <gnutls/openpgp.h> /* GnuTLS with openpgp stuff */
58
59
#include <unistd.h> /* close() */
60
#include <netinet/in.h>
61
#include <stdbool.h> /* true */
62
#include <string.h> /* memset */
63
#include <arpa/inet.h> /* inet_pton() */
64
#include <iso646.h> /* not */
65
#include <net/if.h> /* IF_NAMESIZE */
98
66
99
67
/* GPGME */
100
#include <gpgme.h> /* All GPGME types, constants and
101
functions:
102
gpgme_*
103
GPGME_PROTOCOL_OpenPGP,
104
GPG_ERR_NO_* */
68
#include <errno.h> /* perror() */
69
#include <gpgme.h>
70
71
/* getopt_long */
72
#include <getopt.h>
105
73
106
74
#define BUFFER_SIZE 256
107
75
108
#define PATHDIR "/conf/conf.d/mandos"
109
#define SECKEY "seckey.txt"
110
#define PUBKEY "pubkey.txt"
76
static const char *keydir = "/conf/conf.d/mandos";
77
static const char *pubkeyfile = "pubkey.txt";
78
static const char *seckeyfile = "seckey.txt";
111
79
112
80
bool debug = false;
113
static const char mandos_protocol_version[] = "1";
114
const char *argp_program_version = "mandos-client " VERSION;
115
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
116
81
117
/* Used for passing in values through the Avahi callback functions */
82
/* Used for passing in values through all the callback functions */
118
83
typedef struct {
119
84
AvahiSimplePoll *simple_poll;
120
85
AvahiServer *server;
121
86
gnutls_certificate_credentials_t cred;
122
87
unsigned int dh_bits;
123
gnutls_dh_params_t dh_params;
124
88
const char *priority;
89
} mandos_context;
90
91
/*
92
* Decrypt OpenPGP data using keyrings in HOMEDIR.
93
* Returns -1 on error
94
*/
95
static ssize_t pgp_packet_decrypt (const char *cryptotext,
96
size_t crypto_size,
97
char **plaintext,
98
const char *homedir){
99
gpgme_data_t dh_crypto, dh_plain;
125
100
gpgme_ctx_t ctx;
126
} mandos_context;
127
128
/*
129
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
130
* "buffer_capacity" is how much is currently allocated,
131
* "buffer_length" is how much is already used.
132
*/
133
size_t adjustbuffer(char **buffer, size_t buffer_length,
134
size_t buffer_capacity){
135
if(buffer_length + BUFFER_SIZE > buffer_capacity){
136
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
137
if(buffer == NULL){
138
return 0;
139
}
140
buffer_capacity += BUFFER_SIZE;
141
}
142
return buffer_capacity;
143
}
144
145
/*
146
* Initialize GPGME.
147
*/
148
static bool init_gpgme(mandos_context *mc, const char *seckey,
149
const char *pubkey, const char *tempdir){
150
int ret;
151
101
gpgme_error_t rc;
102
ssize_t ret;
103
size_t plaintext_capacity = 0;
104
ssize_t plaintext_length = 0;
152
105
gpgme_engine_info_t engine_info;
153
106
154
155
/*
156
* Helper function to insert pub and seckey to the enigne keyring.
157
*/
158
bool import_key(const char *filename){
159
int fd;
160
gpgme_data_t pgp_data;
161
162
fd = (int)TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
163
if(fd == -1){
164
perror("open");
165
return false;
166
}
167
168
rc = gpgme_data_new_from_fd(&pgp_data, fd);
169
if(rc != GPG_ERR_NO_ERROR){
170
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
171
gpgme_strsource(rc), gpgme_strerror(rc));
172
return false;
173
}
174
175
rc = gpgme_op_import(mc->ctx, pgp_data);
176
if(rc != GPG_ERR_NO_ERROR){
177
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
178
gpgme_strsource(rc), gpgme_strerror(rc));
179
return false;
180
}
181
182
ret = (int)TEMP_FAILURE_RETRY(close(fd));
183
if(ret == -1){
184
perror("close");
185
}
186
gpgme_data_release(pgp_data);
187
return true;
188
}
189
190
if(debug){
191
fprintf(stderr, "Initialize gpgme\n");
107
if (debug){
108
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
192
109
}
193
110
194
111
/* Init GPGME */
195
112
gpgme_check_version(NULL);
196
113
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
197
if(rc != GPG_ERR_NO_ERROR){
114
if (rc != GPG_ERR_NO_ERROR){
198
115
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
199
116
gpgme_strsource(rc), gpgme_strerror(rc));
200
return false;
117
return -1;
201
118
}
202
119
203
/* Set GPGME home directory for the OpenPGP engine only */
204
rc = gpgme_get_engine_info(&engine_info);
205
if(rc != GPG_ERR_NO_ERROR){
120
/* Set GPGME home directory for the OpenPGP engine only */
121
rc = gpgme_get_engine_info (&engine_info);
122
if (rc != GPG_ERR_NO_ERROR){
206
123
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
207
124
gpgme_strsource(rc), gpgme_strerror(rc));
208
return false;
125
return -1;
209
126
}
210
127
while(engine_info != NULL){
211
128
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
212
129
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
213
engine_info->file_name, tempdir);
130
engine_info->file_name, homedir);
214
131
break;
215
132
}
216
133
engine_info = engine_info->next;
217
134
}
218
135
if(engine_info == NULL){
219
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
220
return false;
221
}
222
223
/* Create new GPGME "context" */
224
rc = gpgme_new(&(mc->ctx));
225
if(rc != GPG_ERR_NO_ERROR){
226
fprintf(stderr, "bad gpgme_new: %s: %s\n",
227
gpgme_strsource(rc), gpgme_strerror(rc));
228
return false;
229
}
230
231
if(not import_key(pubkey) or not import_key(seckey)){
232
return false;
233
}
234
235
return true;
236
}
237
238
/*
239
* Decrypt OpenPGP data.
240
* Returns -1 on error
241
*/
242
static ssize_t pgp_packet_decrypt(const mandos_context *mc,
243
const char *cryptotext,
244
size_t crypto_size,
245
char **plaintext){
246
gpgme_data_t dh_crypto, dh_plain;
247
gpgme_error_t rc;
248
ssize_t ret;
249
size_t plaintext_capacity = 0;
250
ssize_t plaintext_length = 0;
251
252
if(debug){
253
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
136
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
137
return -1;
254
138
}
255
139
256
140
/* Create new GPGME data buffer from memory cryptotext */
257
141
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
258
142
0);
259
if(rc != GPG_ERR_NO_ERROR){
143
if (rc != GPG_ERR_NO_ERROR){
260
144
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
261
145
gpgme_strsource(rc), gpgme_strerror(rc));
262
146
return -1;
264
148
265
149
/* Create new empty GPGME data buffer for the plaintext */
266
150
rc = gpgme_data_new(&dh_plain);
267
if(rc != GPG_ERR_NO_ERROR){
151
if (rc != GPG_ERR_NO_ERROR){
268
152
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
269
153
gpgme_strsource(rc), gpgme_strerror(rc));
270
154
gpgme_data_release(dh_crypto);
271
155
return -1;
272
156
}
273
157
158
/* Create new GPGME "context" */
159
rc = gpgme_new(&ctx);
160
if (rc != GPG_ERR_NO_ERROR){
161
fprintf(stderr, "bad gpgme_new: %s: %s\n",
162
gpgme_strsource(rc), gpgme_strerror(rc));
163
plaintext_length = -1;
164
goto decrypt_end;
165
}
166
274
167
/* Decrypt data from the cryptotext data buffer to the plaintext
275
168
data buffer */
276
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
277
if(rc != GPG_ERR_NO_ERROR){
169
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
170
if (rc != GPG_ERR_NO_ERROR){
278
171
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
279
172
gpgme_strsource(rc), gpgme_strerror(rc));
280
173
plaintext_length = -1;
281
if(debug){
282
gpgme_decrypt_result_t result;
283
result = gpgme_op_decrypt_result(mc->ctx);
284
if(result == NULL){
285
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
286
} else {
287
fprintf(stderr, "Unsupported algorithm: %s\n",
288
result->unsupported_algorithm);
289
fprintf(stderr, "Wrong key usage: %u\n",
290
result->wrong_key_usage);
291
if(result->file_name != NULL){
292
fprintf(stderr, "File name: %s\n", result->file_name);
293
}
294
gpgme_recipient_t recipient;
295
recipient = result->recipients;
296
if(recipient){
297
while(recipient != NULL){
298
fprintf(stderr, "Public key algorithm: %s\n",
299
gpgme_pubkey_algo_name(recipient->pubkey_algo));
300
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
301
fprintf(stderr, "Secret key available: %s\n",
302
recipient->status == GPG_ERR_NO_SECKEY
303
? "No" : "Yes");
304
recipient = recipient->next;
305
}
306
}
307
}
308
}
309
174
goto decrypt_end;
310
175
}
311
176
313
178
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
314
179
}
315
180
181
if (debug){
182
gpgme_decrypt_result_t result;
183
result = gpgme_op_decrypt_result(ctx);
184
if (result == NULL){
185
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
186
} else {
187
fprintf(stderr, "Unsupported algorithm: %s\n",
188
result->unsupported_algorithm);
189
fprintf(stderr, "Wrong key usage: %d\n",
190
result->wrong_key_usage);
191
if(result->file_name != NULL){
192
fprintf(stderr, "File name: %s\n", result->file_name);
193
}
194
gpgme_recipient_t recipient;
195
recipient = result->recipients;
196
if(recipient){
197
while(recipient != NULL){
198
fprintf(stderr, "Public key algorithm: %s\n",
199
gpgme_pubkey_algo_name(recipient->pubkey_algo));
200
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
201
fprintf(stderr, "Secret key available: %s\n",
202
recipient->status == GPG_ERR_NO_SECKEY
203
? "No" : "Yes");
204
recipient = recipient->next;
205
}
206
}
207
}
208
}
209
316
210
/* Seek back to the beginning of the GPGME plaintext data buffer */
317
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
318
perror("gpgme_data_seek");
211
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
212
perror("pgpme_data_seek");
319
213
plaintext_length = -1;
320
214
goto decrypt_end;
321
215
}
322
216
323
217
*plaintext = NULL;
324
218
while(true){
325
plaintext_capacity = adjustbuffer(plaintext,
326
(size_t)plaintext_length,
327
plaintext_capacity);
328
if(plaintext_capacity == 0){
329
perror("adjustbuffer");
219
if (plaintext_length + BUFFER_SIZE
220
> (ssize_t) plaintext_capacity){
221
*plaintext = realloc(*plaintext, plaintext_capacity
222
+ BUFFER_SIZE);
223
if (*plaintext == NULL){
224
perror("realloc");
330
225
plaintext_length = -1;
331
226
goto decrypt_end;
227
}
228
plaintext_capacity += BUFFER_SIZE;
332
229
}
333
230
334
231
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
335
232
BUFFER_SIZE);
336
233
/* Print the data, if any */
337
if(ret == 0){
234
if (ret == 0){
338
235
/* EOF */
339
236
break;
340
237
}
345
242
}
346
243
plaintext_length += ret;
347
244
}
348
245
349
246
if(debug){
350
247
fprintf(stderr, "Decrypted password is: ");
351
248
for(ssize_t i = 0; i < plaintext_length; i++){
364
261
return plaintext_length;
365
262
}
366
263
367
static const char * safer_gnutls_strerror(int value) {
368
const char *ret = gnutls_strerror(value); /* Spurious warning from
369
-Wunreachable-code */
370
if(ret == NULL)
264
static const char * safer_gnutls_strerror (int value) {
265
const char *ret = gnutls_strerror (value);
266
if (ret == NULL)
371
267
ret = "(unknown)";
372
268
return ret;
373
269
}
378
274
fprintf(stderr, "GnuTLS: %s", string);
379
275
}
380
276
381
static int init_gnutls_global(mandos_context *mc,
382
const char *pubkeyfilename,
383
const char *seckeyfilename){
277
static int initgnutls(mandos_context *mc, gnutls_session_t *session,
278
gnutls_dh_params_t *dh_params){
384
279
int ret;
385
280
386
281
if(debug){
387
282
fprintf(stderr, "Initializing GnuTLS\n");
388
283
}
389
390
ret = gnutls_global_init();
391
if(ret != GNUTLS_E_SUCCESS) {
392
fprintf(stderr, "GnuTLS global_init: %s\n",
393
safer_gnutls_strerror(ret));
284
285
if ((ret = gnutls_global_init ())
286
!= GNUTLS_E_SUCCESS) {
287
fprintf (stderr, "GnuTLS global_init: %s\n",
288
safer_gnutls_strerror(ret));
394
289
return -1;
395
290
}
396
291
397
if(debug){
292
if (debug){
398
293
/* "Use a log level over 10 to enable all debugging options."
399
294
* - GnuTLS manual
400
295
*/
403
298
}
404
299
405
300
/* OpenPGP credentials */
406
gnutls_certificate_allocate_credentials(&mc->cred);
407
if(ret != GNUTLS_E_SUCCESS){
408
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
409
* from
410
* -Wunreachable-code
411
*/
412
safer_gnutls_strerror(ret));
413
gnutls_global_deinit();
301
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
302
!= GNUTLS_E_SUCCESS) {
303
fprintf (stderr, "GnuTLS memory error: %s\n",
304
safer_gnutls_strerror(ret));
414
305
return -1;
415
306
}
416
307
417
308
if(debug){
418
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
419
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
420
seckeyfilename);
309
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
310
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
311
seckeyfile);
421
312
}
422
313
423
314
ret = gnutls_certificate_set_openpgp_key_file
424
(mc->cred, pubkeyfilename, seckeyfilename,
425
GNUTLS_OPENPGP_FMT_BASE64);
426
if(ret != GNUTLS_E_SUCCESS) {
315
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
316
if (ret != GNUTLS_E_SUCCESS) {
427
317
fprintf(stderr,
428
318
"Error[%d] while reading the OpenPGP key pair ('%s',"
429
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
430
fprintf(stderr, "The GnuTLS error is: %s\n",
319
" '%s')\n", ret, pubkeyfile, seckeyfile);
320
fprintf(stdout, "The GnuTLS error is: %s\n",
431
321
safer_gnutls_strerror(ret));
432
goto globalfail;
322
return -1;
433
323
}
434
324
435
325
/* GnuTLS server initialization */
436
ret = gnutls_dh_params_init(&mc->dh_params);
437
if(ret != GNUTLS_E_SUCCESS) {
438
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
439
" %s\n", safer_gnutls_strerror(ret));
440
goto globalfail;
441
}
442
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
443
if(ret != GNUTLS_E_SUCCESS) {
444
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
445
safer_gnutls_strerror(ret));
446
goto globalfail;
447
}
448
449
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
450
451
return 0;
452
453
globalfail:
454
455
gnutls_certificate_free_credentials(mc->cred);
456
gnutls_global_deinit();
457
gnutls_dh_params_deinit(mc->dh_params);
458
return -1;
459
}
460
461
static int init_gnutls_session(mandos_context *mc,
462
gnutls_session_t *session){
463
int ret;
326
ret = gnutls_dh_params_init(dh_params);
327
if (ret != GNUTLS_E_SUCCESS) {
328
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
329
" %s\n", safer_gnutls_strerror(ret));
330
return -1;
331
}
332
ret = gnutls_dh_params_generate2(*dh_params, mc->dh_bits);
333
if (ret != GNUTLS_E_SUCCESS) {
334
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
335
safer_gnutls_strerror(ret));
336
return -1;
337
}
338
339
gnutls_certificate_set_dh_params(mc->cred, *dh_params);
340
464
341
/* GnuTLS session creation */
465
342
ret = gnutls_init(session, GNUTLS_SERVER);
466
if(ret != GNUTLS_E_SUCCESS){
343
if (ret != GNUTLS_E_SUCCESS){
467
344
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
468
345
safer_gnutls_strerror(ret));
469
346
}
471
348
{
472
349
const char *err;
473
350
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
474
if(ret != GNUTLS_E_SUCCESS) {
351
if (ret != GNUTLS_E_SUCCESS) {
475
352
fprintf(stderr, "Syntax error at: %s\n", err);
476
353
fprintf(stderr, "GnuTLS error: %s\n",
477
354
safer_gnutls_strerror(ret));
478
gnutls_deinit(*session);
479
355
return -1;
480
356
}
481
357
}
482
358
483
359
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
484
360
mc->cred);
485
if(ret != GNUTLS_E_SUCCESS) {
361
if (ret != GNUTLS_E_SUCCESS) {
486
362
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
487
363
safer_gnutls_strerror(ret));
488
gnutls_deinit(*session);
489
364
return -1;
490
365
}
491
366
492
367
/* ignore client certificate if any. */
493
gnutls_certificate_server_set_request(*session,
494
GNUTLS_CERT_IGNORE);
368
gnutls_certificate_server_set_request (*session,
369
GNUTLS_CERT_IGNORE);
495
370
496
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
371
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
497
372
498
373
return 0;
499
374
}
507
382
AvahiIfIndex if_index,
508
383
mandos_context *mc){
509
384
int ret, tcp_sd;
510
ssize_t sret;
511
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
385
struct sockaddr_in6 to;
512
386
char *buffer = NULL;
513
387
char *decrypted_buffer;
514
388
size_t buffer_length = 0;
515
389
size_t buffer_capacity = 0;
516
390
ssize_t decrypted_buffer_size;
517
size_t written;
391
size_t written = 0;
518
392
int retval = 0;
519
393
char interface[IF_NAMESIZE];
520
394
gnutls_session_t session;
395
gnutls_dh_params_t dh_params;
521
396
522
ret = init_gnutls_session(mc, &session);
523
if(ret != 0){
397
ret = initgnutls (mc, &session, &dh_params);
398
if (ret != 0){
524
399
return -1;
525
400
}
526
401
527
402
if(debug){
528
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
529
"\n", ip, port);
403
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
404
ip, port);
530
405
}
531
406
532
407
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
534
409
perror("socket");
535
410
return -1;
536
411
}
537
412
538
413
if(debug){
539
414
if(if_indextoname((unsigned int)if_index, interface) == NULL){
540
415
perror("if_indextoname");
543
418
fprintf(stderr, "Binding to interface %s\n", interface);
544
419
}
545
420
546
memset(&to, 0, sizeof(to));
547
to.in6.sin6_family = AF_INET6;
421
memset(&to,0,sizeof(to)); /* Spurious warning */
422
to.sin6_family = AF_INET6;
548
423
/* It would be nice to have a way to detect if we were passed an
549
424
IPv4 address here. Now we assume an IPv6 address. */
550
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
551
if(ret < 0 ){
425
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
426
if (ret < 0 ){
552
427
perror("inet_pton");
553
428
return -1;
554
429
}
556
431
fprintf(stderr, "Bad address: %s\n", ip);
557
432
return -1;
558
433
}
559
to.in6.sin6_port = htons(port); /* Spurious warnings from
560
-Wconversion and
561
-Wunreachable-code */
434
to.sin6_port = htons(port); /* Spurious warning */
562
435
563
to.in6.sin6_scope_id = (uint32_t)if_index;
436
to.sin6_scope_id = (uint32_t)if_index;
564
437
565
438
if(debug){
566
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
567
port);
439
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
568
440
char addrstr[INET6_ADDRSTRLEN] = "";
569
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
441
if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr,
570
442
sizeof(addrstr)) == NULL){
571
443
perror("inet_ntop");
572
444
} else {
576
448
}
577
449
}
578
450
579
ret = connect(tcp_sd, &to.in, sizeof(to));
580
if(ret < 0){
451
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
452
if (ret < 0){
581
453
perror("connect");
582
454
return -1;
583
455
}
584
456
585
const char *out = mandos_protocol_version;
586
written = 0;
587
while(true){
588
size_t out_size = strlen(out);
589
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
590
out_size - written));
591
if(ret == -1){
592
perror("write");
593
retval = -1;
594
goto mandos_end;
595
}
596
written += (size_t)ret;
597
if(written < out_size){
598
continue;
599
} else {
600
if(out == mandos_protocol_version){
601
written = 0;
602
out = "\r\n";
603
} else {
604
break;
605
}
606
}
607
}
608
609
457
if(debug){
610
458
fprintf(stderr, "Establishing TLS session with %s\n", ip);
611
459
}
612
460
613
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
614
615
do{
616
ret = gnutls_handshake(session);
617
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
618
619
if(ret != GNUTLS_E_SUCCESS){
461
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
462
463
ret = gnutls_handshake (session);
464
465
if (ret != GNUTLS_E_SUCCESS){
620
466
if(debug){
621
467
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
622
gnutls_perror(ret);
468
gnutls_perror (ret);
623
469
}
624
470
retval = -1;
625
471
goto mandos_end;
631
477
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
632
478
ip);
633
479
}
634
480
635
481
while(true){
636
buffer_capacity = adjustbuffer(&buffer, buffer_length,
637
buffer_capacity);
638
if(buffer_capacity == 0){
639
perror("adjustbuffer");
640
retval = -1;
641
goto mandos_end;
482
if (buffer_length + BUFFER_SIZE > buffer_capacity){
483
buffer = realloc(buffer, buffer_capacity + BUFFER_SIZE);
484
if (buffer == NULL){
485
perror("realloc");
486
retval = -1;
487
goto mandos_end;
488
}
489
buffer_capacity += BUFFER_SIZE;
642
490
}
643
491
644
sret = gnutls_record_recv(session, buffer+buffer_length,
645
BUFFER_SIZE);
646
if(sret == 0){
492
ret = gnutls_record_recv(session, buffer+buffer_length,
493
BUFFER_SIZE);
494
if (ret == 0){
647
495
break;
648
496
}
649
if(sret < 0){
650
switch(sret){
497
if (ret < 0){
498
switch(ret){
651
499
case GNUTLS_E_INTERRUPTED:
652
500
case GNUTLS_E_AGAIN:
653
501
break;
654
502
case GNUTLS_E_REHANDSHAKE:
655
do{
656
ret = gnutls_handshake(session);
657
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
658
if(ret < 0){
503
ret = gnutls_handshake (session);
504
if (ret < 0){
659
505
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
660
gnutls_perror(ret);
506
gnutls_perror (ret);
661
507
retval = -1;
662
508
goto mandos_end;
663
509
}
666
512
fprintf(stderr, "Unknown error while reading data from"
667
513
" encrypted session with Mandos server\n");
668
514
retval = -1;
669
gnutls_bye(session, GNUTLS_SHUT_RDWR);
515
gnutls_bye (session, GNUTLS_SHUT_RDWR);
670
516
goto mandos_end;
671
517
}
672
518
} else {
673
buffer_length += (size_t) sret;
519
buffer_length += (size_t) ret;
674
520
}
675
521
}
676
522
678
524
fprintf(stderr, "Closing TLS session\n");
679
525
}
680
526
681
gnutls_bye(session, GNUTLS_SHUT_RDWR);
527
gnutls_bye (session, GNUTLS_SHUT_RDWR);
682
528
683
if(buffer_length > 0){
684
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
529
if (buffer_length > 0){
530
decrypted_buffer_size = pgp_packet_decrypt(buffer,
685
531
buffer_length,
686
&decrypted_buffer);
687
if(decrypted_buffer_size >= 0){
688
written = 0;
532
&decrypted_buffer,
533
keydir);
534
if (decrypted_buffer_size >= 0){
689
535
while(written < (size_t) decrypted_buffer_size){
690
ret = (int)fwrite(decrypted_buffer + written, 1,
691
(size_t)decrypted_buffer_size - written,
692
stdout);
536
ret = (int)fwrite (decrypted_buffer + written, 1,
537
(size_t)decrypted_buffer_size - written,
538
stdout);
693
539
if(ret == 0 and ferror(stdout)){
694
540
if(debug){
695
541
fprintf(stderr, "Error writing encrypted data: %s\n",
704
550
} else {
705
551
retval = -1;
706
552
}
707
} else {
708
retval = -1;
709
553
}
710
554
711
555
/* Shutdown procedure */
712
556
713
557
mandos_end:
714
558
free(buffer);
715
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
716
if(ret == -1){
717
perror("close");
718
}
719
gnutls_deinit(session);
559
close(tcp_sd);
560
gnutls_deinit (session);
561
gnutls_certificate_free_credentials (mc->cred);
562
gnutls_global_deinit ();
720
563
return retval;
721
564
}
722
565
735
578
flags,
736
579
void* userdata) {
737
580
mandos_context *mc = userdata;
738
assert(r);
581
assert(r); /* Spurious warning */
739
582
740
583
/* Called whenever a service has been resolved successfully or
741
584
timed out */
742
585
743
switch(event) {
586
switch (event) {
744
587
default:
745
588
case AVAHI_RESOLVER_FAILURE:
746
589
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
753
596
char ip[AVAHI_ADDRESS_STR_MAX];
754
597
avahi_address_snprint(ip, sizeof(ip), address);
755
598
if(debug){
756
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
757
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
758
ip, (intmax_t)interface, port);
599
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
600
" port %d\n", name, host_name, ip, interface, port);
759
601
}
760
602
int ret = start_mandos_communication(ip, port, interface, mc);
761
if(ret == 0){
762
avahi_simple_poll_quit(mc->simple_poll);
603
if (ret == 0){
604
exit(EXIT_SUCCESS);
763
605
}
764
606
}
765
607
}
777
619
flags,
778
620
void* userdata) {
779
621
mandos_context *mc = userdata;
780
assert(b);
622
assert(b); /* Spurious warning */
781
623
782
624
/* Called whenever a new services becomes available on the LAN or
783
625
is removed from the LAN */
784
626
785
switch(event) {
627
switch (event) {
786
628
default:
787
629
case AVAHI_BROWSER_FAILURE:
788
630
797
639
the callback function is called the Avahi server will free the
798
640
resolver for us. */
799
641
800
if(!(avahi_s_service_resolver_new(mc->server, interface,
642
if (!(avahi_s_service_resolver_new(mc->server, interface,
801
643
protocol, name, type, domain,
802
644
AVAHI_PROTO_INET6, 0,
803
645
resolve_callback, mc)))
817
659
}
818
660
}
819
661
662
/* Combines file name and path and returns the malloced new
663
string. some sane checks could/should be added */
664
static const char *combinepath(const char *first, const char *second){
665
size_t f_len = strlen(first);
666
size_t s_len = strlen(second);
667
char *tmp = malloc(f_len + s_len + 2);
668
if (tmp == NULL){
669
return NULL;
670
}
671
if(f_len > 0){
672
memcpy(tmp, first, f_len); /* Spurious warning */
673
}
674
tmp[f_len] = '/';
675
if(s_len > 0){
676
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
677
}
678
tmp[f_len + 1 + s_len] = '\0';
679
return tmp;
680
}
681
682
820
683
int main(int argc, char *argv[]){
821
684
AvahiSServiceBrowser *sb = NULL;
822
685
int error;
823
686
int ret;
824
intmax_t tmpmax;
825
int numchars;
826
687
int exitcode = EXIT_SUCCESS;
827
688
const char *interface = "eth0";
828
689
struct ifreq network;
829
690
int sd;
830
uid_t uid;
831
gid_t gid;
832
691
char *connect_to = NULL;
833
char tempdir[] = "/tmp/mandosXXXXXX";
834
692
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
835
const char *seckey = PATHDIR "/" SECKEY;
836
const char *pubkey = PATHDIR "/" PUBKEY;
837
838
693
mandos_context mc = { .simple_poll = NULL, .server = NULL,
839
.dh_bits = 1024, .priority = "SECURE256"
840
":!CTYPE-X.509:+CTYPE-OPENPGP" };
841
bool gnutls_initalized = false;
842
bool gpgme_initalized = false;
694
.dh_bits = 1024, .priority = "SECURE256"};
843
695
844
696
{
845
struct argp_option options[] = {
846
{ .name = "debug", .key = 128,
847
.doc = "Debug mode", .group = 3 },
848
{ .name = "connect", .key = 'c',
849
.arg = "ADDRESS:PORT",
850
.doc = "Connect directly to a specific Mandos server",
851
.group = 1 },
852
{ .name = "interface", .key = 'i',
853
.arg = "NAME",
854
.doc = "Interface that will be used to search for Mandos"
855
" servers",
856
.group = 1 },
857
{ .name = "seckey", .key = 's',
858
.arg = "FILE",
859
.doc = "OpenPGP secret key file base name",
860
.group = 1 },
861
{ .name = "pubkey", .key = 'p',
862
.arg = "FILE",
863
.doc = "OpenPGP public key file base name",
864
.group = 2 },
865
{ .name = "dh-bits", .key = 129,
866
.arg = "BITS",
867
.doc = "Bit length of the prime number used in the"
868
" Diffie-Hellman key exchange",
869
.group = 2 },
870
{ .name = "priority", .key = 130,
871
.arg = "STRING",
872
.doc = "GnuTLS priority string for the TLS handshake",
873
.group = 1 },
874
{ .name = NULL }
875
};
876
877
error_t parse_opt(int key, char *arg,
878
struct argp_state *state) {
879
switch(key) {
880
case 128: /* --debug */
881
debug = true;
882
break;
883
case 'c': /* --connect */
884
connect_to = arg;
885
break;
886
case 'i': /* --interface */
887
interface = arg;
888
break;
889
case 's': /* --seckey */
890
seckey = arg;
891
break;
892
case 'p': /* --pubkey */
893
pubkey = arg;
894
break;
895
case 129: /* --dh-bits */
896
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
897
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
898
or arg[numchars] != '\0'){
899
fprintf(stderr, "Bad number of DH bits\n");
697
/* Temporary int to get the address of for getopt_long */
698
int debug_int = debug ? 1 : 0;
699
while (true){
700
struct option long_options[] = {
701
{"debug", no_argument, &debug_int, 1},
702
{"connect", required_argument, NULL, 'c'},
703
{"interface", required_argument, NULL, 'i'},
704
{"keydir", required_argument, NULL, 'd'},
705
{"seckey", required_argument, NULL, 's'},
706
{"pubkey", required_argument, NULL, 'p'},
707
{"dh-bits", required_argument, NULL, 'D'},
708
{"priority", required_argument, NULL, 'P'},
709
{0, 0, 0, 0} };
710
711
int option_index = 0;
712
ret = getopt_long (argc, argv, "i:", long_options,
713
&option_index);
714
715
if (ret == -1){
716
break;
717
}
718
719
switch(ret){
720
case 0:
721
break;
722
case 'i':
723
interface = optarg;
724
break;
725
case 'c':
726
connect_to = optarg;
727
break;
728
case 'd':
729
keydir = optarg;
730
break;
731
case 'p':
732
pubkeyfile = optarg;
733
break;
734
case 's':
735
seckeyfile = optarg;
736
break;
737
case 'D':
738
errno = 0;
739
mc.dh_bits = (unsigned int) strtol(optarg, NULL, 10);
740
if (errno){
741
perror("strtol");
900
742
exit(EXIT_FAILURE);
901
743
}
902
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
903
break;
904
case 130: /* --priority */
905
mc.priority = arg;
906
break;
907
case ARGP_KEY_ARG:
908
argp_usage(state);
909
case ARGP_KEY_END:
910
break;
744
break;
745
case 'P':
746
mc.priority = optarg;
747
break;
748
case '?':
911
749
default:
912
return ARGP_ERR_UNKNOWN;
913
}
914
return 0;
915
}
916
917
struct argp argp = { .options = options, .parser = parse_opt,
918
.args_doc = "",
919
.doc = "Mandos client -- Get and decrypt"
920
" passwords from a Mandos server" };
921
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
922
if(ret == ARGP_ERR_UNKNOWN){
923
fprintf(stderr, "Unknown error while parsing arguments\n");
924
exitcode = EXIT_FAILURE;
925
goto end;
926
}
927
}
928
929
/* If the interface is down, bring it up */
930
{
931
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
932
if(sd < 0) {
933
perror("socket");
934
exitcode = EXIT_FAILURE;
935
goto end;
936
}
937
strcpy(network.ifr_name, interface);
938
ret = ioctl(sd, SIOCGIFFLAGS, &network);
939
if(ret == -1){
940
perror("ioctl SIOCGIFFLAGS");
941
exitcode = EXIT_FAILURE;
942
goto end;
943
}
944
if((network.ifr_flags & IFF_UP) == 0){
945
network.ifr_flags |= IFF_UP;
946
ret = ioctl(sd, SIOCSIFFLAGS, &network);
947
if(ret == -1){
948
perror("ioctl SIOCSIFFLAGS");
949
exitcode = EXIT_FAILURE;
950
goto end;
951
}
952
}
953
ret = (int)TEMP_FAILURE_RETRY(close(sd));
954
if(ret == -1){
955
perror("close");
956
}
957
}
958
959
uid = getuid();
960
gid = getgid();
961
962
ret = setuid(uid);
963
if(ret == -1){
964
perror("setuid");
965
}
966
967
setgid(gid);
968
if(ret == -1){
969
perror("setgid");
970
}
971
972
ret = init_gnutls_global(&mc, pubkey, seckey);
973
if(ret == -1){
974
fprintf(stderr, "init_gnutls_global failed\n");
975
exitcode = EXIT_FAILURE;
976
goto end;
977
} else {
978
gnutls_initalized = true;
979
}
980
981
if(mkdtemp(tempdir) == NULL){
982
perror("mkdtemp");
983
tempdir[0] = '\0';
984
goto end;
985
}
986
987
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
988
fprintf(stderr, "gpgme_initalized failed\n");
989
exitcode = EXIT_FAILURE;
990
goto end;
991
} else {
992
gpgme_initalized = true;
750
/* getopt_long() has already printed a message about the
751
unrcognized option, so just exit. */
752
exit(EXIT_FAILURE);
753
}
754
}
755
/* Set the global debug flag from the temporary int */
756
debug = debug_int ? true : false;
757
}
758
759
pubkeyfile = combinepath(keydir, pubkeyfile);
760
if (pubkeyfile == NULL){
761
perror("combinepath");
762
exitcode = EXIT_FAILURE;
763
goto end;
764
}
765
766
seckeyfile = combinepath(keydir, seckeyfile);
767
if (seckeyfile == NULL){
768
perror("combinepath");
769
goto end;
993
770
}
994
771
995
772
if_index = (AvahiIfIndex) if_nametoindex(interface);
1004
781
char *address = strrchr(connect_to, ':');
1005
782
if(address == NULL){
1006
783
fprintf(stderr, "No colon in address\n");
1007
exitcode = EXIT_FAILURE;
1008
goto end;
1009
}
1010
uint16_t port;
1011
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1012
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1013
or address[numchars+1] != '\0'){
1014
fprintf(stderr, "Bad port number\n");
1015
exitcode = EXIT_FAILURE;
1016
goto end;
1017
}
1018
port = (uint16_t)tmpmax;
784
exit(EXIT_FAILURE);
785
}
786
errno = 0;
787
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
788
if(errno){
789
perror("Bad port number");
790
exit(EXIT_FAILURE);
791
}
1019
792
*address = '\0';
1020
793
address = connect_to;
1021
794
ret = start_mandos_communication(address, port, if_index, &mc);
1022
795
if(ret < 0){
1023
exitcode = EXIT_FAILURE;
796
exit(EXIT_FAILURE);
1024
797
} else {
1025
exitcode = EXIT_SUCCESS;
1026
}
1027
goto end;
1028
}
1029
1030
if(not debug){
798
exit(EXIT_SUCCESS);
799
}
800
}
801
802
/* If the interface is down, bring it up */
803
{
804
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
805
if(sd < 0) {
806
perror("socket");
807
exitcode = EXIT_FAILURE;
808
goto end;
809
}
810
strcpy(network.ifr_name, interface); /* Spurious warning */
811
ret = ioctl(sd, SIOCGIFFLAGS, &network);
812
if(ret == -1){
813
perror("ioctl SIOCGIFFLAGS");
814
exitcode = EXIT_FAILURE;
815
goto end;
816
}
817
if((network.ifr_flags & IFF_UP) == 0){
818
network.ifr_flags |= IFF_UP;
819
ret = ioctl(sd, SIOCSIFFLAGS, &network);
820
if(ret == -1){
821
perror("ioctl SIOCSIFFLAGS");
822
exitcode = EXIT_FAILURE;
823
goto end;
824
}
825
}
826
close(sd);
827
}
828
829
if (not debug){
1031
830
avahi_set_log_function(empty_log);
1032
831
}
1033
832
1036
835
1037
836
/* Allocate main Avahi loop object */
1038
837
mc.simple_poll = avahi_simple_poll_new();
1039
if(mc.simple_poll == NULL) {
838
if (mc.simple_poll == NULL) {
1040
839
fprintf(stderr, "Avahi: Failed to create simple poll"
1041
840
" object.\n");
1042
841
exitcode = EXIT_FAILURE;
1043
842
goto end;
1044
843
}
1045
844
1046
845
{
1047
846
AvahiServerConfig config;
1048
847
/* Do not publish any local Zeroconf records */
1051
850
config.publish_addresses = 0;
1052
851
config.publish_workstation = 0;
1053
852
config.publish_domain = 0;
1054
853
1055
854
/* Allocate a new server */
1056
855
mc.server = avahi_server_new(avahi_simple_poll_get
1057
856
(mc.simple_poll), &config, NULL,
1058
857
NULL, &error);
1059
858
1060
859
/* Free the Avahi configuration data */
1061
860
avahi_server_config_free(&config);
1062
861
}
1063
862
1064
863
/* Check if creating the Avahi server object succeeded */
1065
if(mc.server == NULL) {
864
if (mc.server == NULL) {
1066
865
fprintf(stderr, "Failed to create Avahi server: %s\n",
1067
866
avahi_strerror(error));
1068
867
exitcode = EXIT_FAILURE;
1074
873
AVAHI_PROTO_INET6,
1075
874
"_mandos._tcp", NULL, 0,
1076
875
browse_callback, &mc);
1077
if(sb == NULL) {
876
if (sb == NULL) {
1078
877
fprintf(stderr, "Failed to create service browser: %s\n",
1079
878
avahi_strerror(avahi_server_errno(mc.server)));
1080
879
exitcode = EXIT_FAILURE;
1082
881
}
1083
882
1084
883
/* Run the main loop */
1085
1086
if(debug){
884
885
if (debug){
1087
886
fprintf(stderr, "Starting Avahi loop search\n");
1088
887
}
1089
888
1090
889
avahi_simple_poll_loop(mc.simple_poll);
1091
890
1092
891
end:
1093
1094
if(debug){
892
893
if (debug){
1095
894
fprintf(stderr, "%s exiting\n", argv[0]);
1096
895
}
1097
896
1098
897
/* Cleanup things */
1099
if(sb != NULL)
898
if (sb != NULL)
1100
899
avahi_s_service_browser_free(sb);
1101
900
1102
if(mc.server != NULL)
901
if (mc.server != NULL)
1103
902
avahi_server_free(mc.server);
1104
1105
if(mc.simple_poll != NULL)
903
904
if (mc.simple_poll != NULL)
1106
905
avahi_simple_poll_free(mc.simple_poll);
1107
1108
if(gnutls_initalized){
1109
gnutls_certificate_free_credentials(mc.cred);
1110
gnutls_global_deinit();
1111
gnutls_dh_params_deinit(mc.dh_params);
1112
}
1113
1114
if(gpgme_initalized){
1115
gpgme_release(mc.ctx);
1116
}
1117
1118
/* Removes the temp directory used by GPGME */
1119
if(tempdir[0] != '\0'){
1120
DIR *d;
1121
struct dirent *direntry;
1122
d = opendir(tempdir);
1123
if(d == NULL){
1124
if(errno != ENOENT){
1125
perror("opendir");
1126
}
1127
} else {
1128
while(true){
1129
direntry = readdir(d);
1130
if(direntry == NULL){
1131
break;
1132
}
1133
if(direntry->d_type == DT_REG){
1134
char *fullname = NULL;
1135
ret = asprintf(&fullname, "%s/%s", tempdir,
1136
direntry->d_name);
1137
if(ret < 0){
1138
perror("asprintf");
1139
continue;
1140
}
1141
ret = unlink(fullname);
1142
if(ret == -1){
1143
fprintf(stderr, "unlink(\"%s\"): %s",
1144
fullname, strerror(errno));
1145
}
1146
free(fullname);
1147
}
1148
}
1149
closedir(d);
1150
}
1151
ret = rmdir(tempdir);
1152
if(ret == -1 and errno != ENOENT){
1153
perror("rmdir");
1154
}
1155
}
1156
906
free(pubkeyfile);
907
free(seckeyfile);
908
1157
909
return exitcode;
1158
910
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0