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- Committer: Björn Påhlsson
- Date: 2008-08-08 01:51:58 UTC
- mto: (24.1.154 mandos) (237.4.3 mandos-release)
- mto: This revision was merged to the branch mainline in revision 50.
- Revision ID: belorn@braxen-20080808015158-gudud63aet3l8jlw
minor edits
- files added:
- network-protocol.txt
- files removed:
- .bzr-builddeb
- debian
- debian/po
- files renamed:
- mandos-clients.conf.xml => clients.conf.xml
- plugin-runner.c => mandos-client.c
- plugin-runner.xml => mandos-client.xml
- plugins.d/mandos-client.c => plugins.d/password-request.c
- plugins.d/mandos-client.xml => plugins.d/password-request.xml
- files modified:
- Makefile
added
removed
plugins.d/password-request.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
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> /* time() */
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 */
65
44
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
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 */
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";
114
79
static const char mandos_protocol_version[] = "1";
115
const char *argp_program_version = "mandos-client " VERSION;
80
const char *argp_program_version = "mandosclient 0.9";
116
81
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
117
82
118
83
/* Used for passing in values through the Avahi callback functions */
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
93
/*
133
97
*/
134
98
size_t adjustbuffer(char **buffer, size_t buffer_length,
135
99
size_t buffer_capacity){
136
if(buffer_length + BUFFER_SIZE > buffer_capacity){
100
if (buffer_length + BUFFER_SIZE > buffer_capacity){
137
101
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
138
if(buffer == NULL){
102
if (buffer == NULL){
139
103
return 0;
140
104
}
141
105
buffer_capacity += BUFFER_SIZE;
144
108
}
145
109
146
110
/*
147
* Initialize GPGME.
111
* Decrypt OpenPGP data using keyrings in HOMEDIR.
112
* Returns -1 on error
148
113
*/
149
static bool init_gpgme(mandos_context *mc, const char *seckey,
150
const char *pubkey, const char *tempdir){
151
int ret;
114
static ssize_t pgp_packet_decrypt (const char *cryptotext,
115
size_t crypto_size,
116
char **plaintext,
117
const char *homedir){
118
gpgme_data_t dh_crypto, dh_plain;
119
gpgme_ctx_t ctx;
152
120
gpgme_error_t rc;
121
ssize_t ret;
122
size_t plaintext_capacity = 0;
123
ssize_t plaintext_length = 0;
153
124
gpgme_engine_info_t engine_info;
154
125
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");
126
if (debug){
127
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
193
128
}
194
129
195
130
/* Init GPGME */
196
131
gpgme_check_version(NULL);
197
132
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
198
if(rc != GPG_ERR_NO_ERROR){
133
if (rc != GPG_ERR_NO_ERROR){
199
134
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
200
135
gpgme_strsource(rc), gpgme_strerror(rc));
201
return false;
136
return -1;
202
137
}
203
138
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){
139
/* Set GPGME home directory for the OpenPGP engine only */
140
rc = gpgme_get_engine_info (&engine_info);
141
if (rc != GPG_ERR_NO_ERROR){
207
142
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
208
143
gpgme_strsource(rc), gpgme_strerror(rc));
209
return false;
144
return -1;
210
145
}
211
146
while(engine_info != NULL){
212
147
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
213
148
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
214
engine_info->file_name, tempdir);
149
engine_info->file_name, homedir);
215
150
break;
216
151
}
217
152
engine_info = engine_info->next;
218
153
}
219
154
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");
155
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
156
return -1;
255
157
}
256
158
257
159
/* Create new GPGME data buffer from memory cryptotext */
258
160
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
259
161
0);
260
if(rc != GPG_ERR_NO_ERROR){
162
if (rc != GPG_ERR_NO_ERROR){
261
163
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
262
164
gpgme_strsource(rc), gpgme_strerror(rc));
263
165
return -1;
265
167
266
168
/* Create new empty GPGME data buffer for the plaintext */
267
169
rc = gpgme_data_new(&dh_plain);
268
if(rc != GPG_ERR_NO_ERROR){
170
if (rc != GPG_ERR_NO_ERROR){
269
171
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
270
172
gpgme_strsource(rc), gpgme_strerror(rc));
271
173
gpgme_data_release(dh_crypto);
272
174
return -1;
273
175
}
274
176
177
/* Create new GPGME "context" */
178
rc = gpgme_new(&ctx);
179
if (rc != GPG_ERR_NO_ERROR){
180
fprintf(stderr, "bad gpgme_new: %s: %s\n",
181
gpgme_strsource(rc), gpgme_strerror(rc));
182
plaintext_length = -1;
183
goto decrypt_end;
184
}
185
275
186
/* Decrypt data from the cryptotext data buffer to the plaintext
276
187
data buffer */
277
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
278
if(rc != GPG_ERR_NO_ERROR){
188
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
189
if (rc != GPG_ERR_NO_ERROR){
279
190
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
280
191
gpgme_strsource(rc), gpgme_strerror(rc));
281
192
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
193
goto decrypt_end;
311
194
}
312
195
314
197
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
315
198
}
316
199
200
if (debug){
201
gpgme_decrypt_result_t result;
202
result = gpgme_op_decrypt_result(ctx);
203
if (result == NULL){
204
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
205
} else {
206
fprintf(stderr, "Unsupported algorithm: %s\n",
207
result->unsupported_algorithm);
208
fprintf(stderr, "Wrong key usage: %d\n",
209
result->wrong_key_usage);
210
if(result->file_name != NULL){
211
fprintf(stderr, "File name: %s\n", result->file_name);
212
}
213
gpgme_recipient_t recipient;
214
recipient = result->recipients;
215
if(recipient){
216
while(recipient != NULL){
217
fprintf(stderr, "Public key algorithm: %s\n",
218
gpgme_pubkey_algo_name(recipient->pubkey_algo));
219
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
220
fprintf(stderr, "Secret key available: %s\n",
221
recipient->status == GPG_ERR_NO_SECKEY
222
? "No" : "Yes");
223
recipient = recipient->next;
224
}
225
}
226
}
227
}
228
317
229
/* 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");
230
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
231
perror("pgpme_data_seek");
320
232
plaintext_length = -1;
321
233
goto decrypt_end;
322
234
}
326
238
plaintext_capacity = adjustbuffer(plaintext,
327
239
(size_t)plaintext_length,
328
240
plaintext_capacity);
329
if(plaintext_capacity == 0){
241
if (plaintext_capacity == 0){
330
242
perror("adjustbuffer");
331
243
plaintext_length = -1;
332
244
goto decrypt_end;
335
247
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
336
248
BUFFER_SIZE);
337
249
/* Print the data, if any */
338
if(ret == 0){
250
if (ret == 0){
339
251
/* EOF */
340
252
break;
341
253
}
346
258
}
347
259
plaintext_length += ret;
348
260
}
349
261
350
262
if(debug){
351
263
fprintf(stderr, "Decrypted password is: ");
352
264
for(ssize_t i = 0; i < plaintext_length; i++){
365
277
return plaintext_length;
366
278
}
367
279
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)
280
static const char * safer_gnutls_strerror (int value) {
281
const char *ret = gnutls_strerror (value);
282
if (ret == NULL)
372
283
ret = "(unknown)";
373
284
return ret;
374
285
}
380
291
}
381
292
382
293
static int init_gnutls_global(mandos_context *mc,
383
const char *pubkeyfilename,
384
const char *seckeyfilename){
294
const char *pubkeyfile,
295
const char *seckeyfile){
385
296
int ret;
386
297
387
298
if(debug){
388
299
fprintf(stderr, "Initializing GnuTLS\n");
389
300
}
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));
301
302
if ((ret = gnutls_global_init ())
303
!= GNUTLS_E_SUCCESS) {
304
fprintf (stderr, "GnuTLS global_init: %s\n",
305
safer_gnutls_strerror(ret));
395
306
return -1;
396
307
}
397
308
398
if(debug){
309
if (debug){
399
310
/* "Use a log level over 10 to enable all debugging options."
400
311
* - GnuTLS manual
401
312
*/
404
315
}
405
316
406
317
/* 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();
318
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
319
!= GNUTLS_E_SUCCESS) {
320
fprintf (stderr, "GnuTLS memory error: %s\n",
321
safer_gnutls_strerror(ret));
322
gnutls_global_deinit ();
415
323
return -1;
416
324
}
417
325
418
326
if(debug){
419
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
420
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
421
seckeyfilename);
327
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
328
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
329
seckeyfile);
422
330
}
423
331
424
332
ret = gnutls_certificate_set_openpgp_key_file
425
(mc->cred, pubkeyfilename, seckeyfilename,
426
GNUTLS_OPENPGP_FMT_BASE64);
427
if(ret != GNUTLS_E_SUCCESS) {
333
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
334
if (ret != GNUTLS_E_SUCCESS) {
428
335
fprintf(stderr,
429
336
"Error[%d] while reading the OpenPGP key pair ('%s',"
430
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
431
fprintf(stderr, "The GnuTLS error is: %s\n",
337
" '%s')\n", ret, pubkeyfile, seckeyfile);
338
fprintf(stdout, "The GnuTLS error is: %s\n",
432
339
safer_gnutls_strerror(ret));
433
340
goto globalfail;
434
341
}
435
342
436
343
/* GnuTLS server initialization */
437
344
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));
345
if (ret != GNUTLS_E_SUCCESS) {
346
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
347
" %s\n", safer_gnutls_strerror(ret));
441
348
goto globalfail;
442
349
}
443
350
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));
351
if (ret != GNUTLS_E_SUCCESS) {
352
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
353
safer_gnutls_strerror(ret));
447
354
goto globalfail;
448
355
}
449
356
450
357
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
451
358
452
359
return 0;
453
360
454
361
globalfail:
455
456
gnutls_certificate_free_credentials(mc->cred);
457
gnutls_global_deinit();
458
gnutls_dh_params_deinit(mc->dh_params);
362
363
gnutls_certificate_free_credentials (mc->cred);
364
gnutls_global_deinit ();
459
365
return -1;
366
460
367
}
461
368
462
369
static int init_gnutls_session(mandos_context *mc,
464
371
int ret;
465
372
/* GnuTLS session creation */
466
373
ret = gnutls_init(session, GNUTLS_SERVER);
467
if(ret != GNUTLS_E_SUCCESS){
374
if (ret != GNUTLS_E_SUCCESS){
468
375
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
469
376
safer_gnutls_strerror(ret));
470
377
}
472
379
{
473
380
const char *err;
474
381
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
475
if(ret != GNUTLS_E_SUCCESS) {
382
if (ret != GNUTLS_E_SUCCESS) {
476
383
fprintf(stderr, "Syntax error at: %s\n", err);
477
384
fprintf(stderr, "GnuTLS error: %s\n",
478
385
safer_gnutls_strerror(ret));
479
gnutls_deinit(*session);
386
gnutls_deinit (*session);
480
387
return -1;
481
388
}
482
389
}
483
390
484
391
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
485
392
mc->cred);
486
if(ret != GNUTLS_E_SUCCESS) {
393
if (ret != GNUTLS_E_SUCCESS) {
487
394
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
488
395
safer_gnutls_strerror(ret));
489
gnutls_deinit(*session);
396
gnutls_deinit (*session);
490
397
return -1;
491
398
}
492
399
493
400
/* ignore client certificate if any. */
494
gnutls_certificate_server_set_request(*session,
495
GNUTLS_CERT_IGNORE);
401
gnutls_certificate_server_set_request (*session,
402
GNUTLS_CERT_IGNORE);
496
403
497
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
404
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
498
405
499
406
return 0;
500
407
}
508
415
AvahiIfIndex if_index,
509
416
mandos_context *mc){
510
417
int ret, tcp_sd;
511
ssize_t sret;
512
418
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
513
419
char *buffer = NULL;
514
420
char *decrypted_buffer;
520
426
char interface[IF_NAMESIZE];
521
427
gnutls_session_t session;
522
428
523
ret = init_gnutls_session(mc, &session);
524
if(ret != 0){
429
ret = init_gnutls_session (mc, &session);
430
if (ret != 0){
525
431
return -1;
526
432
}
527
433
528
434
if(debug){
529
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
530
"\n", ip, port);
435
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
436
ip, port);
531
437
}
532
438
533
439
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
535
441
perror("socket");
536
442
return -1;
537
443
}
538
444
539
445
if(debug){
540
446
if(if_indextoname((unsigned int)if_index, interface) == NULL){
541
447
perror("if_indextoname");
544
450
fprintf(stderr, "Binding to interface %s\n", interface);
545
451
}
546
452
547
memset(&to, 0, sizeof(to));
453
memset(&to,0,sizeof(to)); /* Spurious warning */
548
454
to.in6.sin6_family = AF_INET6;
549
455
/* It would be nice to have a way to detect if we were passed an
550
456
IPv4 address here. Now we assume an IPv6 address. */
551
457
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
552
if(ret < 0 ){
458
if (ret < 0 ){
553
459
perror("inet_pton");
554
460
return -1;
555
461
}
557
463
fprintf(stderr, "Bad address: %s\n", ip);
558
464
return -1;
559
465
}
560
to.in6.sin6_port = htons(port); /* Spurious warnings from
561
-Wconversion and
562
-Wunreachable-code */
466
to.in6.sin6_port = htons(port); /* Spurious warning */
563
467
564
468
to.in6.sin6_scope_id = (uint32_t)if_index;
565
469
566
470
if(debug){
567
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
568
port);
471
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
569
472
char addrstr[INET6_ADDRSTRLEN] = "";
570
473
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
571
474
sizeof(addrstr)) == NULL){
578
481
}
579
482
580
483
ret = connect(tcp_sd, &to.in, sizeof(to));
581
if(ret < 0){
484
if (ret < 0){
582
485
perror("connect");
583
486
return -1;
584
487
}
585
488
586
489
const char *out = mandos_protocol_version;
587
490
written = 0;
588
while(true){
491
while (true){
589
492
size_t out_size = strlen(out);
590
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
493
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
591
494
out_size - written));
592
if(ret == -1){
495
if (ret == -1){
593
496
perror("write");
594
497
retval = -1;
595
498
goto mandos_end;
598
501
if(written < out_size){
599
502
continue;
600
503
} else {
601
if(out == mandos_protocol_version){
504
if (out == mandos_protocol_version){
602
505
written = 0;
603
506
out = "\r\n";
604
507
} else {
606
509
}
607
510
}
608
511
}
609
512
610
513
if(debug){
611
514
fprintf(stderr, "Establishing TLS session with %s\n", ip);
612
515
}
613
516
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){
517
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
518
519
ret = gnutls_handshake (session);
520
521
if (ret != GNUTLS_E_SUCCESS){
621
522
if(debug){
622
523
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
623
gnutls_perror(ret);
524
gnutls_perror (ret);
624
525
}
625
526
retval = -1;
626
527
goto mandos_end;
632
533
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
633
534
ip);
634
535
}
635
536
636
537
while(true){
637
538
buffer_capacity = adjustbuffer(&buffer, buffer_length,
638
539
buffer_capacity);
639
if(buffer_capacity == 0){
540
if (buffer_capacity == 0){
640
541
perror("adjustbuffer");
641
542
retval = -1;
642
543
goto mandos_end;
643
544
}
644
545
645
sret = gnutls_record_recv(session, buffer+buffer_length,
646
BUFFER_SIZE);
647
if(sret == 0){
546
ret = gnutls_record_recv(session, buffer+buffer_length,
547
BUFFER_SIZE);
548
if (ret == 0){
648
549
break;
649
550
}
650
if(sret < 0){
651
switch(sret){
551
if (ret < 0){
552
switch(ret){
652
553
case GNUTLS_E_INTERRUPTED:
653
554
case GNUTLS_E_AGAIN:
654
555
break;
655
556
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){
557
ret = gnutls_handshake (session);
558
if (ret < 0){
660
559
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
661
gnutls_perror(ret);
560
gnutls_perror (ret);
662
561
retval = -1;
663
562
goto mandos_end;
664
563
}
667
566
fprintf(stderr, "Unknown error while reading data from"
668
567
" encrypted session with Mandos server\n");
669
568
retval = -1;
670
gnutls_bye(session, GNUTLS_SHUT_RDWR);
569
gnutls_bye (session, GNUTLS_SHUT_RDWR);
671
570
goto mandos_end;
672
571
}
673
572
} else {
674
buffer_length += (size_t) sret;
573
buffer_length += (size_t) ret;
675
574
}
676
575
}
677
576
679
578
fprintf(stderr, "Closing TLS session\n");
680
579
}
681
580
682
gnutls_bye(session, GNUTLS_SHUT_RDWR);
581
gnutls_bye (session, GNUTLS_SHUT_RDWR);
683
582
684
if(buffer_length > 0){
685
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
583
if (buffer_length > 0){
584
decrypted_buffer_size = pgp_packet_decrypt(buffer,
686
585
buffer_length,
687
&decrypted_buffer);
688
if(decrypted_buffer_size >= 0){
586
&decrypted_buffer,
587
keydir);
588
if (decrypted_buffer_size >= 0){
689
589
written = 0;
690
590
while(written < (size_t) decrypted_buffer_size){
691
ret = (int)fwrite(decrypted_buffer + written, 1,
692
(size_t)decrypted_buffer_size - written,
693
stdout);
591
ret = (int)fwrite (decrypted_buffer + written, 1,
592
(size_t)decrypted_buffer_size - written,
593
stdout);
694
594
if(ret == 0 and ferror(stdout)){
695
595
if(debug){
696
596
fprintf(stderr, "Error writing encrypted data: %s\n",
705
605
} else {
706
606
retval = -1;
707
607
}
708
} else {
709
retval = -1;
710
608
}
711
609
712
610
/* Shutdown procedure */
713
611
714
612
mandos_end:
715
613
free(buffer);
716
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
717
if(ret == -1){
718
perror("close");
719
}
720
gnutls_deinit(session);
614
close(tcp_sd);
615
gnutls_deinit (session);
721
616
return retval;
722
617
}
723
618
736
631
flags,
737
632
void* userdata) {
738
633
mandos_context *mc = userdata;
739
assert(r);
634
assert(r); /* Spurious warning */
740
635
741
636
/* Called whenever a service has been resolved successfully or
742
637
timed out */
743
638
744
switch(event) {
639
switch (event) {
745
640
default:
746
641
case AVAHI_RESOLVER_FAILURE:
747
642
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
754
649
char ip[AVAHI_ADDRESS_STR_MAX];
755
650
avahi_address_snprint(ip, sizeof(ip), address);
756
651
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);
652
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
653
" port %d\n", name, host_name, ip, interface, port);
760
654
}
761
655
int ret = start_mandos_communication(ip, port, interface, mc);
762
if(ret == 0){
763
avahi_simple_poll_quit(mc->simple_poll);
656
if (ret == 0){
657
exit(EXIT_SUCCESS);
764
658
}
765
659
}
766
660
}
778
672
flags,
779
673
void* userdata) {
780
674
mandos_context *mc = userdata;
781
assert(b);
675
assert(b); /* Spurious warning */
782
676
783
677
/* Called whenever a new services becomes available on the LAN or
784
678
is removed from the LAN */
785
679
786
switch(event) {
680
switch (event) {
787
681
default:
788
682
case AVAHI_BROWSER_FAILURE:
789
683
798
692
the callback function is called the Avahi server will free the
799
693
resolver for us. */
800
694
801
if(!(avahi_s_service_resolver_new(mc->server, interface,
695
if (!(avahi_s_service_resolver_new(mc->server, interface,
802
696
protocol, name, type, domain,
803
697
AVAHI_PROTO_INET6, 0,
804
698
resolve_callback, mc)))
818
712
}
819
713
}
820
714
715
/* Combines file name and path and returns the malloced new
716
string. some sane checks could/should be added */
717
static const char *combinepath(const char *first, const char *second){
718
size_t f_len = strlen(first);
719
size_t s_len = strlen(second);
720
char *tmp = malloc(f_len + s_len + 2);
721
if (tmp == NULL){
722
return NULL;
723
}
724
if(f_len > 0){
725
memcpy(tmp, first, f_len); /* Spurious warning */
726
}
727
tmp[f_len] = '/';
728
if(s_len > 0){
729
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
730
}
731
tmp[f_len + 1 + s_len] = '\0';
732
return tmp;
733
}
734
735
821
736
int main(int argc, char *argv[]){
822
737
AvahiSServiceBrowser *sb = NULL;
823
738
int error;
824
739
int ret;
825
intmax_t tmpmax;
826
int numchars;
827
740
int exitcode = EXIT_SUCCESS;
828
741
const char *interface = "eth0";
829
742
struct ifreq network;
831
744
uid_t uid;
832
745
gid_t gid;
833
746
char *connect_to = NULL;
834
char tempdir[] = "/tmp/mandosXXXXXX";
835
747
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
836
const char *seckey = PATHDIR "/" SECKEY;
837
const char *pubkey = PATHDIR "/" PUBKEY;
838
748
const char *pubkeyfile = "pubkey.txt";
749
const char *seckeyfile = "seckey.txt";
839
750
mandos_context mc = { .simple_poll = NULL, .server = NULL,
840
.dh_bits = 1024, .priority = "SECURE256"
841
":!CTYPE-X.509:+CTYPE-OPENPGP" };
842
bool gnutls_initialized = false;
843
bool gpgme_initialized = false;
751
.dh_bits = 1024, .priority = "SECURE256"};
752
bool gnutls_initalized = false;
844
753
845
754
{
846
755
struct argp_option options[] = {
847
756
{ .name = "debug", .key = 128,
848
757
.doc = "Debug mode", .group = 3 },
849
758
{ .name = "connect", .key = 'c',
850
.arg = "ADDRESS:PORT",
851
.doc = "Connect directly to a specific Mandos server",
759
.arg = "IP",
760
.doc = "Connect directly to a sepcified mandos server",
852
761
.group = 1 },
853
762
{ .name = "interface", .key = 'i',
854
.arg = "NAME",
855
.doc = "Interface that will be used to search for Mandos"
856
" servers",
763
.arg = "INTERFACE",
764
.doc = "Interface that Avahi will conntect through",
765
.group = 1 },
766
{ .name = "keydir", .key = 'd',
767
.arg = "KEYDIR",
768
.doc = "Directory where the openpgp keyring is",
857
769
.group = 1 },
858
770
{ .name = "seckey", .key = 's',
859
.arg = "FILE",
860
.doc = "OpenPGP secret key file base name",
771
.arg = "SECKEY",
772
.doc = "Secret openpgp key for gnutls authentication",
861
773
.group = 1 },
862
774
{ .name = "pubkey", .key = 'p',
863
.arg = "FILE",
864
.doc = "OpenPGP public key file base name",
775
.arg = "PUBKEY",
776
.doc = "Public openpgp key for gnutls authentication",
865
777
.group = 2 },
866
778
{ .name = "dh-bits", .key = 129,
867
779
.arg = "BITS",
868
.doc = "Bit length of the prime number used in the"
869
" Diffie-Hellman key exchange",
780
.doc = "dh-bits to use in gnutls communication",
870
781
.group = 2 },
871
782
{ .name = "priority", .key = 130,
872
.arg = "STRING",
873
.doc = "GnuTLS priority string for the TLS handshake",
874
.group = 1 },
783
.arg = "PRIORITY",
784
.doc = "GNUTLS priority", .group = 1 },
875
785
{ .name = NULL }
876
786
};
787
877
788
878
error_t parse_opt(int key, char *arg,
879
struct argp_state *state) {
880
switch(key) {
881
case 128: /* --debug */
789
error_t parse_opt (int key, char *arg,
790
struct argp_state *state) {
791
/* Get the INPUT argument from `argp_parse', which we know is
792
a pointer to our plugin list pointer. */
793
switch (key) {
794
case 128:
882
795
debug = true;
883
796
break;
884
case 'c': /* --connect */
797
case 'c':
885
798
connect_to = arg;
886
799
break;
887
case 'i': /* --interface */
800
case 'i':
888
801
interface = arg;
889
802
break;
890
case 's': /* --seckey */
891
seckey = arg;
892
break;
893
case 'p': /* --pubkey */
894
pubkey = arg;
895
break;
896
case 129: /* --dh-bits */
897
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
898
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
899
or arg[numchars] != '\0'){
900
fprintf(stderr, "Bad number of DH bits\n");
803
case 'd':
804
keydir = arg;
805
break;
806
case 's':
807
seckeyfile = arg;
808
break;
809
case 'p':
810
pubkeyfile = arg;
811
break;
812
case 129:
813
errno = 0;
814
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
815
if (errno){
816
perror("strtol");
901
817
exit(EXIT_FAILURE);
902
818
}
903
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
904
819
break;
905
case 130: /* --priority */
820
case 130:
906
821
mc.priority = arg;
907
822
break;
908
823
case ARGP_KEY_ARG:
909
argp_usage(state);
910
case ARGP_KEY_END:
824
argp_usage (state);
911
825
break;
826
case ARGP_KEY_END:
827
break;
912
828
default:
913
829
return ARGP_ERR_UNKNOWN;
914
830
}
915
831
return 0;
916
832
}
917
833
918
834
struct argp argp = { .options = options, .parser = parse_opt,
919
835
.args_doc = "",
920
836
.doc = "Mandos client -- Get and decrypt"
921
" passwords from a Mandos server" };
922
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
923
if(ret == ARGP_ERR_UNKNOWN){
924
fprintf(stderr, "Unknown error while parsing arguments\n");
925
exitcode = EXIT_FAILURE;
926
goto end;
927
}
928
}
929
930
/* If the interface is down, bring it up */
931
{
932
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
933
if(sd < 0) {
934
perror("socket");
935
exitcode = EXIT_FAILURE;
936
goto end;
937
}
938
strcpy(network.ifr_name, interface);
939
ret = ioctl(sd, SIOCGIFFLAGS, &network);
940
if(ret == -1){
941
perror("ioctl SIOCGIFFLAGS");
942
exitcode = EXIT_FAILURE;
943
goto end;
944
}
945
if((network.ifr_flags & IFF_UP) == 0){
946
network.ifr_flags |= IFF_UP;
947
ret = ioctl(sd, SIOCSIFFLAGS, &network);
948
if(ret == -1){
949
perror("ioctl SIOCSIFFLAGS");
950
exitcode = EXIT_FAILURE;
951
goto end;
952
}
953
}
954
ret = (int)TEMP_FAILURE_RETRY(close(sd));
955
if(ret == -1){
956
perror("close");
957
}
958
}
959
837
" passwords from mandos server" };
838
argp_parse (&argp, argc, argv, 0, 0, NULL);
839
}
840
841
pubkeyfile = combinepath(keydir, pubkeyfile);
842
if (pubkeyfile == NULL){
843
perror("combinepath");
844
exitcode = EXIT_FAILURE;
845
goto end;
846
}
847
848
seckeyfile = combinepath(keydir, seckeyfile);
849
if (seckeyfile == NULL){
850
perror("combinepath");
851
goto end;
852
}
853
854
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
855
if (ret == -1){
856
fprintf(stderr, "init_gnutls_global\n");
857
goto end;
858
} else {
859
gnutls_initalized = true;
860
}
861
960
862
uid = getuid();
961
863
gid = getgid();
962
864
963
865
ret = setuid(uid);
964
if(ret == -1){
866
if (ret == -1){
965
867
perror("setuid");
966
868
}
967
869
968
870
setgid(gid);
969
if(ret == -1){
871
if (ret == -1){
970
872
perror("setgid");
971
873
}
972
874
973
ret = init_gnutls_global(&mc, pubkey, seckey);
974
if(ret == -1){
975
fprintf(stderr, "init_gnutls_global failed\n");
976
exitcode = EXIT_FAILURE;
977
goto end;
978
} else {
979
gnutls_initialized = true;
980
}
981
982
if(mkdtemp(tempdir) == NULL){
983
perror("mkdtemp");
984
tempdir[0] = '\0';
985
goto end;
986
}
987
988
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
989
fprintf(stderr, "init_gpgme failed\n");
990
exitcode = EXIT_FAILURE;
991
goto end;
992
} else {
993
gpgme_initialized = true;
994
}
995
996
875
if_index = (AvahiIfIndex) if_nametoindex(interface);
997
876
if(if_index == 0){
998
877
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1008
887
exitcode = EXIT_FAILURE;
1009
888
goto end;
1010
889
}
1011
uint16_t port;
1012
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1013
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1014
or address[numchars+1] != '\0'){
1015
fprintf(stderr, "Bad port number\n");
890
errno = 0;
891
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
892
if(errno){
893
perror("Bad port number");
1016
894
exitcode = EXIT_FAILURE;
1017
895
goto end;
1018
896
}
1019
port = (uint16_t)tmpmax;
1020
897
*address = '\0';
1021
898
address = connect_to;
1022
899
ret = start_mandos_communication(address, port, if_index, &mc);
1028
905
goto end;
1029
906
}
1030
907
1031
if(not debug){
908
/* If the interface is down, bring it up */
909
{
910
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
911
if(sd < 0) {
912
perror("socket");
913
exitcode = EXIT_FAILURE;
914
goto end;
915
}
916
strcpy(network.ifr_name, interface); /* Spurious warning */
917
ret = ioctl(sd, SIOCGIFFLAGS, &network);
918
if(ret == -1){
919
perror("ioctl SIOCGIFFLAGS");
920
exitcode = EXIT_FAILURE;
921
goto end;
922
}
923
if((network.ifr_flags & IFF_UP) == 0){
924
network.ifr_flags |= IFF_UP;
925
ret = ioctl(sd, SIOCSIFFLAGS, &network);
926
if(ret == -1){
927
perror("ioctl SIOCSIFFLAGS");
928
exitcode = EXIT_FAILURE;
929
goto end;
930
}
931
}
932
close(sd);
933
}
934
935
if (not debug){
1032
936
avahi_set_log_function(empty_log);
1033
937
}
1034
938
1037
941
1038
942
/* Allocate main Avahi loop object */
1039
943
mc.simple_poll = avahi_simple_poll_new();
1040
if(mc.simple_poll == NULL) {
944
if (mc.simple_poll == NULL) {
1041
945
fprintf(stderr, "Avahi: Failed to create simple poll"
1042
946
" object.\n");
1043
947
exitcode = EXIT_FAILURE;
1044
948
goto end;
1045
949
}
1046
950
1047
951
{
1048
952
AvahiServerConfig config;
1049
953
/* Do not publish any local Zeroconf records */
1052
956
config.publish_addresses = 0;
1053
957
config.publish_workstation = 0;
1054
958
config.publish_domain = 0;
1055
959
1056
960
/* Allocate a new server */
1057
961
mc.server = avahi_server_new(avahi_simple_poll_get
1058
962
(mc.simple_poll), &config, NULL,
1059
963
NULL, &error);
1060
964
1061
965
/* Free the Avahi configuration data */
1062
966
avahi_server_config_free(&config);
1063
967
}
1064
968
1065
969
/* Check if creating the Avahi server object succeeded */
1066
if(mc.server == NULL) {
970
if (mc.server == NULL) {
1067
971
fprintf(stderr, "Failed to create Avahi server: %s\n",
1068
972
avahi_strerror(error));
1069
973
exitcode = EXIT_FAILURE;
1075
979
AVAHI_PROTO_INET6,
1076
980
"_mandos._tcp", NULL, 0,
1077
981
browse_callback, &mc);
1078
if(sb == NULL) {
982
if (sb == NULL) {
1079
983
fprintf(stderr, "Failed to create service browser: %s\n",
1080
984
avahi_strerror(avahi_server_errno(mc.server)));
1081
985
exitcode = EXIT_FAILURE;
1083
987
}
1084
988
1085
989
/* Run the main loop */
1086
1087
if(debug){
990
991
if (debug){
1088
992
fprintf(stderr, "Starting Avahi loop search\n");
1089
993
}
1090
994
1091
995
avahi_simple_poll_loop(mc.simple_poll);
1092
996
1093
997
end:
1094
1095
if(debug){
998
999
if (debug){
1096
1000
fprintf(stderr, "%s exiting\n", argv[0]);
1097
1001
}
1098
1002
1099
1003
/* Cleanup things */
1100
if(sb != NULL)
1004
if (sb != NULL)
1101
1005
avahi_s_service_browser_free(sb);
1102
1006
1103
if(mc.server != NULL)
1007
if (mc.server != NULL)
1104
1008
avahi_server_free(mc.server);
1105
1106
if(mc.simple_poll != NULL)
1009
1010
if (mc.simple_poll != NULL)
1107
1011
avahi_simple_poll_free(mc.simple_poll);
1108
1109
if(gnutls_initialized){
1110
gnutls_certificate_free_credentials(mc.cred);
1111
gnutls_global_deinit();
1112
gnutls_dh_params_deinit(mc.dh_params);
1113
}
1114
1115
if(gpgme_initialized){
1116
gpgme_release(mc.ctx);
1117
}
1118
1119
/* Removes the temp directory used by GPGME */
1120
if(tempdir[0] != '\0'){
1121
DIR *d;
1122
struct dirent *direntry;
1123
d = opendir(tempdir);
1124
if(d == NULL){
1125
if(errno != ENOENT){
1126
perror("opendir");
1127
}
1128
} else {
1129
while(true){
1130
direntry = readdir(d);
1131
if(direntry == NULL){
1132
break;
1133
}
1134
/* Skip "." and ".." */
1135
if(direntry->d_name[0] == '.'
1136
and (direntry->d_name[1] == '\0'
1137
or (direntry->d_name[1] == '.'
1138
and direntry->d_name[2] == '\0'))){
1139
continue;
1140
}
1141
char *fullname = NULL;
1142
ret = asprintf(&fullname, "%s/%s", tempdir,
1143
direntry->d_name);
1144
if(ret < 0){
1145
perror("asprintf");
1146
continue;
1147
}
1148
ret = remove(fullname);
1149
if(ret == -1){
1150
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1151
strerror(errno));
1152
}
1153
free(fullname);
1154
}
1155
closedir(d);
1156
}
1157
ret = rmdir(tempdir);
1158
if(ret == -1 and errno != ENOENT){
1159
perror("rmdir");
1160
}
1012
free(pubkeyfile);
1013
free(seckeyfile);
1014
1015
if (gnutls_initalized){
1016
gnutls_certificate_free_credentials (mc.cred);
1017
gnutls_global_deinit ();
1161
1018
}
1162
1019
1163
1020
return exitcode;
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0