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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:
- ca.pem
- files renamed:
- server.py => mandos
- server.conf => mandos.conf
- plugbasedclient.c => plugin-runner.c
- plugins.d/mandosclient.c => plugins.d/mandos-client.c
- plugins.d/passprompt.c => plugins.d/password-prompt.c
- files modified:
- Makefile
added
removed
plugins.d/mandos-client.c
1
1
/* -*- coding: utf-8 -*- */
2
2
/*
3
* Mandos client - get and decrypt data from a Mandos server
3
* Mandos-client - get and decrypt data from a Mandos server
4
4
*
5
5
* This program is partly derived from an example program for an Avahi
6
6
* service browser, downloaded from
9
9
* "browse_callback", and parts of "main".
10
10
*
11
11
* Everything else is
12
* Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
12
* Copyright © 2008,2009 Teddy Hogeborn
13
* Copyright © 2008,2009 Björn Påhlsson
13
14
*
14
15
* This program is free software: you can redistribute it and/or
15
16
* modify it under the terms of the GNU General Public License as
32
33
#define _LARGEFILE_SOURCE
33
34
#define _FILE_OFFSET_BITS 64
34
35
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
36
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
36
37
37
#include <stdio.h>
38
#include <assert.h>
39
#include <stdlib.h>
40
#include <time.h>
41
#include <net/if.h> /* if_nametoindex */
42
#include <sys/ioctl.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
43
SIOCSIFFLAGS */
38
#include <stdio.h> /* fprintf(), stderr, fwrite(),
39
stdout, ferror(), sscanf(),
40
remove() */
41
#include <stdint.h> /* uint16_t, uint32_t */
42
#include <stddef.h> /* NULL, size_t, ssize_t */
43
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
44
srand() */
45
#include <stdbool.h> /* bool, true */
46
#include <string.h> /* memset(), strcmp(), strlen(),
47
strerror(), asprintf(), strcpy() */
48
#include <sys/ioctl.h> /* ioctl */
49
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
50
sockaddr_in6, PF_INET6,
51
SOCK_STREAM, INET6_ADDRSTRLEN,
52
uid_t, gid_t, open(), opendir(),
53
DIR */
54
#include <sys/stat.h> /* open() */
55
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
56
struct in6_addr, inet_pton(),
57
connect() */
58
#include <fcntl.h> /* open() */
59
#include <dirent.h> /* opendir(), struct dirent, readdir()
60
*/
61
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
62
#include <assert.h> /* assert() */
63
#include <errno.h> /* perror(), errno */
64
#include <time.h> /* nanosleep(), time() */
44
65
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
45
SIOCSIFFLAGS */
66
SIOCSIFFLAGS, if_indextoname(),
67
if_nametoindex(), IF_NAMESIZE */
68
#include <netinet/in.h>
69
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
70
getuid(), getgid(), setuid(),
71
setgid() */
72
#include <arpa/inet.h> /* inet_pton(), htons */
73
#include <iso646.h> /* not, and, or */
74
#include <argp.h> /* struct argp_option, error_t, struct
75
argp_state, struct argp,
76
argp_parse(), ARGP_KEY_ARG,
77
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
78
#include <sys/klog.h> /* klogctl() */
46
79
80
/* Avahi */
81
/* All Avahi types, constants and functions
82
Avahi*, avahi_*,
83
AVAHI_* */
47
84
#include <avahi-core/core.h>
48
85
#include <avahi-core/lookup.h>
49
86
#include <avahi-core/log.h>
51
88
#include <avahi-common/malloc.h>
52
89
#include <avahi-common/error.h>
53
90
54
/* Mandos client part */
55
#include <sys/types.h> /* socket(), inet_pton() */
56
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
57
struct in6_addr, inet_pton() */
58
#include <gnutls/gnutls.h> /* All GnuTLS stuff */
59
#include <gnutls/openpgp.h> /* GnuTLS with openpgp stuff */
60
61
#include <unistd.h> /* close() */
62
#include <netinet/in.h>
63
#include <stdbool.h> /* true */
64
#include <string.h> /* memset */
65
#include <arpa/inet.h> /* inet_pton() */
66
#include <iso646.h> /* not */
67
#include <net/if.h> /* IF_NAMESIZE */
91
/* GnuTLS */
92
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
93
functions:
94
gnutls_*
95
init_gnutls_session(),
96
GNUTLS_* */
97
#include <gnutls/openpgp.h>
98
/* gnutls_certificate_set_openpgp_key_file(),
99
GNUTLS_OPENPGP_FMT_BASE64 */
68
100
69
101
/* GPGME */
70
#include <errno.h> /* perror() */
71
#include <gpgme.h>
72
73
/* getopt_long */
74
#include <getopt.h>
102
#include <gpgme.h> /* All GPGME types, constants and
103
functions:
104
gpgme_*
105
GPGME_PROTOCOL_OpenPGP,
106
GPG_ERR_NO_* */
75
107
76
108
#define BUFFER_SIZE 256
77
109
78
static const char *keydir = "/conf/conf.d/mandos";
79
static const char *pubkeyfile = "pubkey.txt";
80
static const char *seckeyfile = "seckey.txt";
110
#define PATHDIR "/conf/conf.d/mandos"
111
#define SECKEY "seckey.txt"
112
#define PUBKEY "pubkey.txt"
81
113
82
114
bool debug = false;
83
84
const char mandos_protocol_version[] = "1";
85
86
/* Used for passing in values through all the callback functions */
115
static const char mandos_protocol_version[] = "1";
116
const char *argp_program_version = "mandos-client " VERSION;
117
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
118
119
/* Used for passing in values through the Avahi callback functions */
87
120
typedef struct {
88
121
AvahiSimplePoll *simple_poll;
89
122
AvahiServer *server;
90
123
gnutls_certificate_credentials_t cred;
91
124
unsigned int dh_bits;
125
gnutls_dh_params_t dh_params;
92
126
const char *priority;
127
gpgme_ctx_t ctx;
93
128
} mandos_context;
94
129
130
/*
131
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
132
* "buffer_capacity" is how much is currently allocated,
133
* "buffer_length" is how much is already used.
134
*/
95
135
size_t adjustbuffer(char **buffer, size_t buffer_length,
96
136
size_t buffer_capacity){
97
if (buffer_length + BUFFER_SIZE > buffer_capacity){
137
if(buffer_length + BUFFER_SIZE > buffer_capacity){
98
138
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
99
if (buffer == NULL){
139
if(buffer == NULL){
100
140
return 0;
101
141
}
102
142
buffer_capacity += BUFFER_SIZE;
105
145
}
106
146
107
147
/*
108
* Decrypt OpenPGP data using keyrings in HOMEDIR.
109
* Returns -1 on error
148
* Initialize GPGME.
110
149
*/
111
static ssize_t pgp_packet_decrypt (const char *cryptotext,
112
size_t crypto_size,
113
char **plaintext,
114
const char *homedir){
115
gpgme_data_t dh_crypto, dh_plain;
116
gpgme_ctx_t ctx;
150
static bool init_gpgme(mandos_context *mc, const char *seckey,
151
const char *pubkey, const char *tempdir){
152
int ret;
117
153
gpgme_error_t rc;
118
ssize_t ret;
119
size_t plaintext_capacity = 0;
120
ssize_t plaintext_length = 0;
121
154
gpgme_engine_info_t engine_info;
122
155
123
if (debug){
124
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");
125
194
}
126
195
127
196
/* Init GPGME */
128
197
gpgme_check_version(NULL);
129
198
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
130
if (rc != GPG_ERR_NO_ERROR){
199
if(rc != GPG_ERR_NO_ERROR){
131
200
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
132
201
gpgme_strsource(rc), gpgme_strerror(rc));
133
return -1;
202
return false;
134
203
}
135
204
136
/* Set GPGME home directory for the OpenPGP engine only */
137
rc = gpgme_get_engine_info (&engine_info);
138
if (rc != GPG_ERR_NO_ERROR){
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){
139
208
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
140
209
gpgme_strsource(rc), gpgme_strerror(rc));
141
return -1;
210
return false;
142
211
}
143
212
while(engine_info != NULL){
144
213
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
145
214
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
146
engine_info->file_name, homedir);
215
engine_info->file_name, tempdir);
147
216
break;
148
217
}
149
218
engine_info = engine_info->next;
150
219
}
151
220
if(engine_info == NULL){
152
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
153
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");
154
256
}
155
257
156
258
/* Create new GPGME data buffer from memory cryptotext */
157
259
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
158
260
0);
159
if (rc != GPG_ERR_NO_ERROR){
261
if(rc != GPG_ERR_NO_ERROR){
160
262
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
161
263
gpgme_strsource(rc), gpgme_strerror(rc));
162
264
return -1;
164
266
165
267
/* Create new empty GPGME data buffer for the plaintext */
166
268
rc = gpgme_data_new(&dh_plain);
167
if (rc != GPG_ERR_NO_ERROR){
269
if(rc != GPG_ERR_NO_ERROR){
168
270
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
169
271
gpgme_strsource(rc), gpgme_strerror(rc));
170
272
gpgme_data_release(dh_crypto);
171
273
return -1;
172
274
}
173
275
174
/* Create new GPGME "context" */
175
rc = gpgme_new(&ctx);
176
if (rc != GPG_ERR_NO_ERROR){
177
fprintf(stderr, "bad gpgme_new: %s: %s\n",
178
gpgme_strsource(rc), gpgme_strerror(rc));
179
plaintext_length = -1;
180
goto decrypt_end;
181
}
182
183
276
/* Decrypt data from the cryptotext data buffer to the plaintext
184
277
data buffer */
185
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
186
if (rc != GPG_ERR_NO_ERROR){
278
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
279
if(rc != GPG_ERR_NO_ERROR){
187
280
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
188
281
gpgme_strsource(rc), gpgme_strerror(rc));
189
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
}
190
311
goto decrypt_end;
191
312
}
192
313
194
315
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
195
316
}
196
317
197
if (debug){
198
gpgme_decrypt_result_t result;
199
result = gpgme_op_decrypt_result(ctx);
200
if (result == NULL){
201
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
202
} else {
203
fprintf(stderr, "Unsupported algorithm: %s\n",
204
result->unsupported_algorithm);
205
fprintf(stderr, "Wrong key usage: %d\n",
206
result->wrong_key_usage);
207
if(result->file_name != NULL){
208
fprintf(stderr, "File name: %s\n", result->file_name);
209
}
210
gpgme_recipient_t recipient;
211
recipient = result->recipients;
212
if(recipient){
213
while(recipient != NULL){
214
fprintf(stderr, "Public key algorithm: %s\n",
215
gpgme_pubkey_algo_name(recipient->pubkey_algo));
216
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
217
fprintf(stderr, "Secret key available: %s\n",
218
recipient->status == GPG_ERR_NO_SECKEY
219
? "No" : "Yes");
220
recipient = recipient->next;
221
}
222
}
223
}
224
}
225
226
318
/* Seek back to the beginning of the GPGME plaintext data buffer */
227
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
228
perror("pgpme_data_seek");
319
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
320
perror("gpgme_data_seek");
229
321
plaintext_length = -1;
230
322
goto decrypt_end;
231
323
}
232
324
233
325
*plaintext = NULL;
234
326
while(true){
235
plaintext_capacity = adjustbuffer(plaintext, (size_t)plaintext_length,
327
plaintext_capacity = adjustbuffer(plaintext,
328
(size_t)plaintext_length,
236
329
plaintext_capacity);
237
if (plaintext_capacity == 0){
330
if(plaintext_capacity == 0){
238
331
perror("adjustbuffer");
239
332
plaintext_length = -1;
240
333
goto decrypt_end;
243
336
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
244
337
BUFFER_SIZE);
245
338
/* Print the data, if any */
246
if (ret == 0){
339
if(ret == 0){
247
340
/* EOF */
248
341
break;
249
342
}
254
347
}
255
348
plaintext_length += ret;
256
349
}
257
350
258
351
if(debug){
259
352
fprintf(stderr, "Decrypted password is: ");
260
353
for(ssize_t i = 0; i < plaintext_length; i++){
273
366
return plaintext_length;
274
367
}
275
368
276
static const char * safer_gnutls_strerror (int value) {
277
const char *ret = gnutls_strerror (value);
278
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)
279
373
ret = "(unknown)";
280
374
return ret;
281
375
}
286
380
fprintf(stderr, "GnuTLS: %s", string);
287
381
}
288
382
289
static int initgnutls(mandos_context *mc, gnutls_session_t *session,
290
gnutls_dh_params_t *dh_params){
383
static int init_gnutls_global(mandos_context *mc,
384
const char *pubkeyfilename,
385
const char *seckeyfilename){
291
386
int ret;
292
387
293
388
if(debug){
294
389
fprintf(stderr, "Initializing GnuTLS\n");
295
390
}
296
297
if ((ret = gnutls_global_init ())
298
!= GNUTLS_E_SUCCESS) {
299
fprintf (stderr, "GnuTLS global_init: %s\n",
300
safer_gnutls_strerror(ret));
391
392
ret = gnutls_global_init();
393
if(ret != GNUTLS_E_SUCCESS) {
394
fprintf(stderr, "GnuTLS global_init: %s\n",
395
safer_gnutls_strerror(ret));
301
396
return -1;
302
397
}
303
398
304
if (debug){
399
if(debug){
305
400
/* "Use a log level over 10 to enable all debugging options."
306
401
* - GnuTLS manual
307
402
*/
310
405
}
311
406
312
407
/* OpenPGP credentials */
313
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
314
!= GNUTLS_E_SUCCESS) {
315
fprintf (stderr, "GnuTLS memory error: %s\n",
316
safer_gnutls_strerror(ret));
408
gnutls_certificate_allocate_credentials(&mc->cred);
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();
317
416
return -1;
318
417
}
319
418
320
419
if(debug){
321
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
322
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
323
seckeyfile);
420
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
421
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
422
seckeyfilename);
324
423
}
325
424
326
425
ret = gnutls_certificate_set_openpgp_key_file
327
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
328
if (ret != GNUTLS_E_SUCCESS) {
426
(mc->cred, pubkeyfilename, seckeyfilename,
427
GNUTLS_OPENPGP_FMT_BASE64);
428
if(ret != GNUTLS_E_SUCCESS) {
329
429
fprintf(stderr,
330
430
"Error[%d] while reading the OpenPGP key pair ('%s',"
331
" '%s')\n", ret, pubkeyfile, seckeyfile);
332
fprintf(stdout, "The GnuTLS error is: %s\n",
431
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
432
fprintf(stderr, "The GnuTLS error is: %s\n",
333
433
safer_gnutls_strerror(ret));
334
return -1;
434
goto globalfail;
335
435
}
336
436
337
437
/* GnuTLS server initialization */
338
ret = gnutls_dh_params_init(dh_params);
339
if (ret != GNUTLS_E_SUCCESS) {
340
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
341
" %s\n", safer_gnutls_strerror(ret));
342
return -1;
343
}
344
ret = gnutls_dh_params_generate2(*dh_params, mc->dh_bits);
345
if (ret != GNUTLS_E_SUCCESS) {
346
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
347
safer_gnutls_strerror(ret));
348
return -1;
349
}
350
351
gnutls_certificate_set_dh_params(mc->cred, *dh_params);
352
438
ret = gnutls_dh_params_init(&mc->dh_params);
439
if(ret != GNUTLS_E_SUCCESS) {
440
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
441
" %s\n", safer_gnutls_strerror(ret));
442
goto globalfail;
443
}
444
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
445
if(ret != GNUTLS_E_SUCCESS) {
446
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
447
safer_gnutls_strerror(ret));
448
goto globalfail;
449
}
450
451
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
452
453
return 0;
454
455
globalfail:
456
457
gnutls_certificate_free_credentials(mc->cred);
458
gnutls_global_deinit();
459
gnutls_dh_params_deinit(mc->dh_params);
460
return -1;
461
}
462
463
static int init_gnutls_session(mandos_context *mc,
464
gnutls_session_t *session){
465
int ret;
353
466
/* GnuTLS session creation */
354
467
ret = gnutls_init(session, GNUTLS_SERVER);
355
if (ret != GNUTLS_E_SUCCESS){
468
if(ret != GNUTLS_E_SUCCESS){
356
469
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
357
470
safer_gnutls_strerror(ret));
358
471
}
360
473
{
361
474
const char *err;
362
475
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
363
if (ret != GNUTLS_E_SUCCESS) {
476
if(ret != GNUTLS_E_SUCCESS) {
364
477
fprintf(stderr, "Syntax error at: %s\n", err);
365
478
fprintf(stderr, "GnuTLS error: %s\n",
366
479
safer_gnutls_strerror(ret));
480
gnutls_deinit(*session);
367
481
return -1;
368
482
}
369
483
}
370
484
371
485
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
372
486
mc->cred);
373
if (ret != GNUTLS_E_SUCCESS) {
487
if(ret != GNUTLS_E_SUCCESS) {
374
488
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
375
489
safer_gnutls_strerror(ret));
490
gnutls_deinit(*session);
376
491
return -1;
377
492
}
378
493
379
494
/* ignore client certificate if any. */
380
gnutls_certificate_server_set_request (*session,
381
GNUTLS_CERT_IGNORE);
495
gnutls_certificate_server_set_request(*session,
496
GNUTLS_CERT_IGNORE);
382
497
383
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
498
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
384
499
385
500
return 0;
386
501
}
394
509
AvahiIfIndex if_index,
395
510
mandos_context *mc){
396
511
int ret, tcp_sd;
397
struct sockaddr_in6 to;
512
ssize_t sret;
513
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
398
514
char *buffer = NULL;
399
515
char *decrypted_buffer;
400
516
size_t buffer_length = 0;
404
520
int retval = 0;
405
521
char interface[IF_NAMESIZE];
406
522
gnutls_session_t session;
407
gnutls_dh_params_t dh_params;
408
523
409
ret = initgnutls (mc, &session, &dh_params);
410
if (ret != 0){
524
ret = init_gnutls_session(mc, &session);
525
if(ret != 0){
411
526
return -1;
412
527
}
413
528
414
529
if(debug){
415
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
416
ip, port);
530
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
531
"\n", ip, port);
417
532
}
418
533
419
534
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
421
536
perror("socket");
422
537
return -1;
423
538
}
424
539
425
540
if(debug){
426
541
if(if_indextoname((unsigned int)if_index, interface) == NULL){
427
542
perror("if_indextoname");
430
545
fprintf(stderr, "Binding to interface %s\n", interface);
431
546
}
432
547
433
memset(&to,0,sizeof(to)); /* Spurious warning */
434
to.sin6_family = AF_INET6;
548
memset(&to, 0, sizeof(to));
549
to.in6.sin6_family = AF_INET6;
435
550
/* It would be nice to have a way to detect if we were passed an
436
551
IPv4 address here. Now we assume an IPv6 address. */
437
ret = inet_pton(AF_INET6, ip, &to.sin6_addr);
438
if (ret < 0 ){
552
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
553
if(ret < 0 ){
439
554
perror("inet_pton");
440
555
return -1;
441
556
}
443
558
fprintf(stderr, "Bad address: %s\n", ip);
444
559
return -1;
445
560
}
446
to.sin6_port = htons(port); /* Spurious warning */
561
to.in6.sin6_port = htons(port); /* Spurious warnings from
562
-Wconversion and
563
-Wunreachable-code */
447
564
448
to.sin6_scope_id = (uint32_t)if_index;
565
to.in6.sin6_scope_id = (uint32_t)if_index;
449
566
450
567
if(debug){
451
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
568
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
569
port);
452
570
char addrstr[INET6_ADDRSTRLEN] = "";
453
if(inet_ntop(to.sin6_family, &(to.sin6_addr), addrstr,
571
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
454
572
sizeof(addrstr)) == NULL){
455
573
perror("inet_ntop");
456
574
} else {
460
578
}
461
579
}
462
580
463
ret = connect(tcp_sd, (struct sockaddr *) &to, sizeof(to));
464
if (ret < 0){
581
ret = connect(tcp_sd, &to.in, sizeof(to));
582
if(ret < 0){
465
583
perror("connect");
466
584
return -1;
467
585
}
468
586
469
587
const char *out = mandos_protocol_version;
470
588
written = 0;
471
while (true){
589
while(true){
472
590
size_t out_size = strlen(out);
473
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
591
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
474
592
out_size - written));
475
if (ret == -1){
593
if(ret == -1){
476
594
perror("write");
477
595
retval = -1;
478
596
goto mandos_end;
481
599
if(written < out_size){
482
600
continue;
483
601
} else {
484
if (out == mandos_protocol_version){
602
if(out == mandos_protocol_version){
485
603
written = 0;
486
604
out = "\r\n";
487
605
} else {
489
607
}
490
608
}
491
609
}
492
610
493
611
if(debug){
494
612
fprintf(stderr, "Establishing TLS session with %s\n", ip);
495
613
}
496
614
497
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
498
499
ret = gnutls_handshake (session);
500
501
if (ret != GNUTLS_E_SUCCESS){
615
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
616
617
do{
618
ret = gnutls_handshake(session);
619
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
620
621
if(ret != GNUTLS_E_SUCCESS){
502
622
if(debug){
503
623
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
504
gnutls_perror (ret);
624
gnutls_perror(ret);
505
625
}
506
626
retval = -1;
507
627
goto mandos_end;
513
633
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
514
634
ip);
515
635
}
516
636
517
637
while(true){
518
buffer_capacity = adjustbuffer(&buffer, buffer_length, buffer_capacity);
519
if (buffer_capacity == 0){
638
buffer_capacity = adjustbuffer(&buffer, buffer_length,
639
buffer_capacity);
640
if(buffer_capacity == 0){
520
641
perror("adjustbuffer");
521
642
retval = -1;
522
643
goto mandos_end;
523
644
}
524
645
525
ret = gnutls_record_recv(session, buffer+buffer_length,
526
BUFFER_SIZE);
527
if (ret == 0){
646
sret = gnutls_record_recv(session, buffer+buffer_length,
647
BUFFER_SIZE);
648
if(sret == 0){
528
649
break;
529
650
}
530
if (ret < 0){
531
switch(ret){
651
if(sret < 0){
652
switch(sret){
532
653
case GNUTLS_E_INTERRUPTED:
533
654
case GNUTLS_E_AGAIN:
534
655
break;
535
656
case GNUTLS_E_REHANDSHAKE:
536
ret = gnutls_handshake (session);
537
if (ret < 0){
657
do{
658
ret = gnutls_handshake(session);
659
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
660
if(ret < 0){
538
661
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
539
gnutls_perror (ret);
662
gnutls_perror(ret);
540
663
retval = -1;
541
664
goto mandos_end;
542
665
}
545
668
fprintf(stderr, "Unknown error while reading data from"
546
669
" encrypted session with Mandos server\n");
547
670
retval = -1;
548
gnutls_bye (session, GNUTLS_SHUT_RDWR);
671
gnutls_bye(session, GNUTLS_SHUT_RDWR);
549
672
goto mandos_end;
550
673
}
551
674
} else {
552
buffer_length += (size_t) ret;
675
buffer_length += (size_t) sret;
553
676
}
554
677
}
555
678
557
680
fprintf(stderr, "Closing TLS session\n");
558
681
}
559
682
560
gnutls_bye (session, GNUTLS_SHUT_RDWR);
683
gnutls_bye(session, GNUTLS_SHUT_RDWR);
561
684
562
if (buffer_length > 0){
563
decrypted_buffer_size = pgp_packet_decrypt(buffer,
685
if(buffer_length > 0){
686
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
564
687
buffer_length,
565
&decrypted_buffer,
566
keydir);
567
if (decrypted_buffer_size >= 0){
688
&decrypted_buffer);
689
if(decrypted_buffer_size >= 0){
568
690
written = 0;
569
691
while(written < (size_t) decrypted_buffer_size){
570
ret = (int)fwrite (decrypted_buffer + written, 1,
571
(size_t)decrypted_buffer_size - written,
572
stdout);
692
ret = (int)fwrite(decrypted_buffer + written, 1,
693
(size_t)decrypted_buffer_size - written,
694
stdout);
573
695
if(ret == 0 and ferror(stdout)){
574
696
if(debug){
575
697
fprintf(stderr, "Error writing encrypted data: %s\n",
584
706
} else {
585
707
retval = -1;
586
708
}
709
} else {
710
retval = -1;
587
711
}
588
712
589
713
/* Shutdown procedure */
590
714
591
715
mandos_end:
592
716
free(buffer);
593
close(tcp_sd);
594
gnutls_deinit (session);
595
gnutls_certificate_free_credentials (mc->cred);
596
gnutls_global_deinit ();
717
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
718
if(ret == -1){
719
perror("close");
720
}
721
gnutls_deinit(session);
597
722
return retval;
598
723
}
599
724
612
737
flags,
613
738
void* userdata) {
614
739
mandos_context *mc = userdata;
615
assert(r); /* Spurious warning */
740
assert(r);
616
741
617
742
/* Called whenever a service has been resolved successfully or
618
743
timed out */
619
744
620
switch (event) {
745
switch(event) {
621
746
default:
622
747
case AVAHI_RESOLVER_FAILURE:
623
748
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
630
755
char ip[AVAHI_ADDRESS_STR_MAX];
631
756
avahi_address_snprint(ip, sizeof(ip), address);
632
757
if(debug){
633
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
634
" 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);
635
761
}
636
762
int ret = start_mandos_communication(ip, port, interface, mc);
637
if (ret == 0){
638
exit(EXIT_SUCCESS);
763
if(ret == 0){
764
avahi_simple_poll_quit(mc->simple_poll);
639
765
}
640
766
}
641
767
}
653
779
flags,
654
780
void* userdata) {
655
781
mandos_context *mc = userdata;
656
assert(b); /* Spurious warning */
782
assert(b);
657
783
658
784
/* Called whenever a new services becomes available on the LAN or
659
785
is removed from the LAN */
660
786
661
switch (event) {
787
switch(event) {
662
788
default:
663
789
case AVAHI_BROWSER_FAILURE:
664
790
673
799
the callback function is called the Avahi server will free the
674
800
resolver for us. */
675
801
676
if (!(avahi_s_service_resolver_new(mc->server, interface,
802
if(!(avahi_s_service_resolver_new(mc->server, interface,
677
803
protocol, name, type, domain,
678
804
AVAHI_PROTO_INET6, 0,
679
805
resolve_callback, mc)))
693
819
}
694
820
}
695
821
696
/* Combines file name and path and returns the malloced new
697
string. some sane checks could/should be added */
698
static const char *combinepath(const char *first, const char *second){
699
size_t f_len = strlen(first);
700
size_t s_len = strlen(second);
701
char *tmp = malloc(f_len + s_len + 2);
702
if (tmp == NULL){
703
return NULL;
704
}
705
if(f_len > 0){
706
memcpy(tmp, first, f_len); /* Spurious warning */
707
}
708
tmp[f_len] = '/';
709
if(s_len > 0){
710
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
711
}
712
tmp[f_len + 1 + s_len] = '\0';
713
return tmp;
714
}
715
716
717
822
int main(int argc, char *argv[]){
718
823
AvahiSServiceBrowser *sb = NULL;
719
824
int error;
720
825
int ret;
826
intmax_t tmpmax;
827
int numchars;
721
828
int exitcode = EXIT_SUCCESS;
722
829
const char *interface = "eth0";
723
830
struct ifreq network;
724
831
int sd;
832
uid_t uid;
833
gid_t gid;
725
834
char *connect_to = NULL;
835
char tempdir[] = "/tmp/mandosXXXXXX";
836
bool tempdir_created = false;
726
837
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
838
const char *seckey = PATHDIR "/" SECKEY;
839
const char *pubkey = PATHDIR "/" PUBKEY;
840
727
841
mandos_context mc = { .simple_poll = NULL, .server = NULL,
728
.dh_bits = 1024, .priority = "SECURE256"};
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;
729
847
730
848
{
731
/* Temporary int to get the address of for getopt_long */
732
int debug_int = debug ? 1 : 0;
733
while (true){
734
struct option long_options[] = {
735
{"debug", no_argument, &debug_int, 1},
736
{"connect", required_argument, NULL, 'c'},
737
{"interface", required_argument, NULL, 'i'},
738
{"keydir", required_argument, NULL, 'd'},
739
{"seckey", required_argument, NULL, 's'},
740
{"pubkey", required_argument, NULL, 'p'},
741
{"dh-bits", required_argument, NULL, 'D'},
742
{"priority", required_argument, NULL, 'P'},
743
{0, 0, 0, 0} };
744
745
int option_index = 0;
746
ret = getopt_long (argc, argv, "i:", long_options,
747
&option_index);
748
749
if (ret == -1){
750
break;
751
}
752
753
switch(ret){
754
case 0:
755
break;
756
case 'i':
757
interface = optarg;
758
break;
759
case 'c':
760
connect_to = optarg;
761
break;
762
case 'd':
763
keydir = optarg;
764
break;
765
case 'p':
766
pubkeyfile = optarg;
767
break;
768
case 's':
769
seckeyfile = optarg;
770
break;
771
case 'D':
772
errno = 0;
773
mc.dh_bits = (unsigned int) strtol(optarg, NULL, 10);
774
if (errno){
775
perror("strtol");
776
exit(EXIT_FAILURE);
777
}
778
break;
779
case 'P':
780
mc.priority = optarg;
781
break;
782
case '?':
849
struct argp_option options[] = {
850
{ .name = "debug", .key = 128,
851
.doc = "Debug mode", .group = 3 },
852
{ .name = "connect", .key = 'c',
853
.arg = "ADDRESS:PORT",
854
.doc = "Connect directly to a specific Mandos server",
855
.group = 1 },
856
{ .name = "interface", .key = 'i',
857
.arg = "NAME",
858
.doc = "Interface that will be used to search for Mandos"
859
" servers",
860
.group = 1 },
861
{ .name = "seckey", .key = 's',
862
.arg = "FILE",
863
.doc = "OpenPGP secret key file base name",
864
.group = 1 },
865
{ .name = "pubkey", .key = 'p',
866
.arg = "FILE",
867
.doc = "OpenPGP public key file base name",
868
.group = 2 },
869
{ .name = "dh-bits", .key = 129,
870
.arg = "BITS",
871
.doc = "Bit length of the prime number used in the"
872
" Diffie-Hellman key exchange",
873
.group = 2 },
874
{ .name = "priority", .key = 130,
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 },
882
{ .name = NULL }
883
};
884
885
error_t parse_opt(int key, char *arg,
886
struct argp_state *state) {
887
switch(key) {
888
case 128: /* --debug */
889
debug = true;
890
break;
891
case 'c': /* --connect */
892
connect_to = arg;
893
break;
894
case 'i': /* --interface */
895
interface = arg;
896
break;
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");
908
exit(EXIT_FAILURE);
909
}
910
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
911
break;
912
case 130: /* --priority */
913
mc.priority = arg;
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;
922
case ARGP_KEY_ARG:
923
argp_usage(state);
924
case ARGP_KEY_END:
925
break;
783
926
default:
784
/* getopt_long() has already printed a message about the
785
unrcognized option, so just exit. */
786
exit(EXIT_FAILURE);
787
}
788
}
789
/* Set the global debug flag from the temporary int */
790
debug = debug_int ? true : false;
791
}
792
793
pubkeyfile = combinepath(keydir, pubkeyfile);
794
if (pubkeyfile == NULL){
795
perror("combinepath");
796
exitcode = EXIT_FAILURE;
797
goto end;
798
}
799
800
seckeyfile = combinepath(keydir, seckeyfile);
801
if (seckeyfile == NULL){
802
perror("combinepath");
803
goto end;
927
return ARGP_ERR_UNKNOWN;
928
}
929
return 0;
930
}
931
932
struct argp argp = { .options = options, .parser = parse_opt,
933
.args_doc = "",
934
.doc = "Mandos client -- Get and decrypt"
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");
939
exitcode = EXIT_FAILURE;
940
goto end;
941
}
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
}
952
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
}
1007
}
1008
1009
uid = getuid();
1010
gid = getgid();
1011
1012
setgid(gid);
1013
if(ret == -1){
1014
perror("setgid");
1015
}
1016
1017
ret = setuid(uid);
1018
if(ret == -1){
1019
perror("setuid");
1020
}
1021
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;
804
1043
}
805
1044
806
1045
if_index = (AvahiIfIndex) if_nametoindex(interface);
807
1046
if(if_index == 0){
808
1047
fprintf(stderr, "No such interface: \"%s\"\n", interface);
809
exit(EXIT_FAILURE);
1048
exitcode = EXIT_FAILURE;
1049
goto end;
810
1050
}
811
1051
812
1052
if(connect_to != NULL){
815
1055
char *address = strrchr(connect_to, ':');
816
1056
if(address == NULL){
817
1057
fprintf(stderr, "No colon in address\n");
818
exit(EXIT_FAILURE);
819
}
820
errno = 0;
821
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
822
if(errno){
823
perror("Bad port number");
824
exit(EXIT_FAILURE);
825
}
1058
exitcode = EXIT_FAILURE;
1059
goto end;
1060
}
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");
1066
exitcode = EXIT_FAILURE;
1067
goto end;
1068
}
1069
port = (uint16_t)tmpmax;
826
1070
*address = '\0';
827
1071
address = connect_to;
828
1072
ret = start_mandos_communication(address, port, if_index, &mc);
829
1073
if(ret < 0){
830
exit(EXIT_FAILURE);
1074
exitcode = EXIT_FAILURE;
831
1075
} else {
832
exit(EXIT_SUCCESS);
833
}
834
}
835
836
/* If the interface is down, bring it up */
837
{
838
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
839
if(sd < 0) {
840
perror("socket");
841
exitcode = EXIT_FAILURE;
842
goto end;
843
}
844
strcpy(network.ifr_name, interface); /* Spurious warning */
845
ret = ioctl(sd, SIOCGIFFLAGS, &network);
846
if(ret == -1){
847
perror("ioctl SIOCGIFFLAGS");
848
exitcode = EXIT_FAILURE;
849
goto end;
850
}
851
if((network.ifr_flags & IFF_UP) == 0){
852
network.ifr_flags |= IFF_UP;
853
ret = ioctl(sd, SIOCSIFFLAGS, &network);
854
if(ret == -1){
855
perror("ioctl SIOCSIFFLAGS");
856
exitcode = EXIT_FAILURE;
857
goto end;
858
}
859
}
860
close(sd);
861
}
862
863
if (not debug){
1076
exitcode = EXIT_SUCCESS;
1077
}
1078
goto end;
1079
}
1080
1081
if(not debug){
864
1082
avahi_set_log_function(empty_log);
865
1083
}
866
1084
869
1087
870
1088
/* Allocate main Avahi loop object */
871
1089
mc.simple_poll = avahi_simple_poll_new();
872
if (mc.simple_poll == NULL) {
1090
if(mc.simple_poll == NULL) {
873
1091
fprintf(stderr, "Avahi: Failed to create simple poll"
874
1092
" object.\n");
875
1093
exitcode = EXIT_FAILURE;
876
1094
goto end;
877
1095
}
878
1096
879
1097
{
880
1098
AvahiServerConfig config;
881
1099
/* Do not publish any local Zeroconf records */
884
1102
config.publish_addresses = 0;
885
1103
config.publish_workstation = 0;
886
1104
config.publish_domain = 0;
887
1105
888
1106
/* Allocate a new server */
889
1107
mc.server = avahi_server_new(avahi_simple_poll_get
890
1108
(mc.simple_poll), &config, NULL,
891
1109
NULL, &error);
892
1110
893
1111
/* Free the Avahi configuration data */
894
1112
avahi_server_config_free(&config);
895
1113
}
896
1114
897
1115
/* Check if creating the Avahi server object succeeded */
898
if (mc.server == NULL) {
1116
if(mc.server == NULL) {
899
1117
fprintf(stderr, "Failed to create Avahi server: %s\n",
900
1118
avahi_strerror(error));
901
1119
exitcode = EXIT_FAILURE;
907
1125
AVAHI_PROTO_INET6,
908
1126
"_mandos._tcp", NULL, 0,
909
1127
browse_callback, &mc);
910
if (sb == NULL) {
1128
if(sb == NULL) {
911
1129
fprintf(stderr, "Failed to create service browser: %s\n",
912
1130
avahi_strerror(avahi_server_errno(mc.server)));
913
1131
exitcode = EXIT_FAILURE;
915
1133
}
916
1134
917
1135
/* Run the main loop */
918
919
if (debug){
1136
1137
if(debug){
920
1138
fprintf(stderr, "Starting Avahi loop search\n");
921
1139
}
922
1140
923
1141
avahi_simple_poll_loop(mc.simple_poll);
924
1142
925
1143
end:
926
927
if (debug){
1144
1145
if(debug){
928
1146
fprintf(stderr, "%s exiting\n", argv[0]);
929
1147
}
930
1148
931
1149
/* Cleanup things */
932
if (sb != NULL)
1150
if(sb != NULL)
933
1151
avahi_s_service_browser_free(sb);
934
1152
935
if (mc.server != NULL)
1153
if(mc.server != NULL)
936
1154
avahi_server_free(mc.server);
937
938
if (mc.simple_poll != NULL)
1155
1156
if(mc.simple_poll != NULL)
939
1157
avahi_simple_poll_free(mc.simple_poll);
940
free(pubkeyfile);
941
free(seckeyfile);
1158
1159
if(gnutls_initialized){
1160
gnutls_certificate_free_credentials(mc.cred);
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
}
1211
}
942
1212
943
1213
return exitcode;
944
1214
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0