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237.2.37
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: plugins.d/mandos-client.c
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- Committer: Teddy Hogeborn
- Date: 2009-01-17 09:46:54 UTC
- mto: (24.1.125 mandos) (237.4.2 mandos-pipe-ipc) (299.1.1 release) (300.1.1 release) (301.1.1 release)
- mto: This revision was merged to the branch mainline in revision 249.
- Revision ID: teddy@fukt.bsnet.se-20090117094654-ydvanis7caqoxxn7
* mandos-keygen (password): Remove bashism "${PIPESTATUS}".
- 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
#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() */
44
64
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
45
SIOCSIFFLAGS */
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 */
46
77
78
/* Avahi */
79
/* All Avahi types, constants and functions
80
Avahi*, avahi_*,
81
AVAHI_* */
47
82
#include <avahi-core/core.h>
48
83
#include <avahi-core/lookup.h>
49
84
#include <avahi-core/log.h>
51
86
#include <avahi-common/malloc.h>
52
87
#include <avahi-common/error.h>
53
88
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 */
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 */
60
98
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() */
71
99
/* GPGME */
72
#include <errno.h> /* perror() */
73
#include <gpgme.h>
100
#include <gpgme.h> /* All GPGME types, constants and
101
functions:
102
gpgme_*
103
GPGME_PROTOCOL_OpenPGP,
104
GPG_ERR_NO_* */
74
105
75
106
#define BUFFER_SIZE 256
76
107
108
#define PATHDIR "/conf/conf.d/mandos"
109
#define SECKEY "seckey.txt"
110
#define PUBKEY "pubkey.txt"
111
77
112
bool debug = false;
78
static const char *keydir = "/conf/conf.d/mandos";
79
const char *argp_program_version = "mandosclient 0.9";
113
static const char mandos_protocol_version[] = "1";
114
const char *argp_program_version = "mandos-client " VERSION;
80
115
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
81
static const char mandos_protocol_version[] = "1";
82
116
83
117
/* Used for passing in values through the Avahi callback functions */
84
118
typedef struct {
88
122
unsigned int dh_bits;
89
123
gnutls_dh_params_t dh_params;
90
124
const char *priority;
125
gpgme_ctx_t ctx;
91
126
} mandos_context;
92
127
93
/* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
128
/*
129
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
94
130
* "buffer_capacity" is how much is currently allocated,
95
* "buffer_length" is how much is already used. */
131
* "buffer_length" is how much is already used.
132
*/
96
133
size_t adjustbuffer(char **buffer, size_t buffer_length,
97
134
size_t buffer_capacity){
98
if (buffer_length + BUFFER_SIZE > buffer_capacity){
135
if(buffer_length + BUFFER_SIZE > buffer_capacity){
99
136
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
100
if (buffer == NULL){
137
if(buffer == NULL){
101
138
return 0;
102
139
}
103
140
buffer_capacity += BUFFER_SIZE;
106
143
}
107
144
108
145
/*
109
* Decrypt OpenPGP data using keyrings in HOMEDIR.
110
* Returns -1 on error
146
* Initialize GPGME.
111
147
*/
112
static ssize_t pgp_packet_decrypt (const char *cryptotext,
113
size_t crypto_size,
114
char **plaintext,
115
const char *homedir){
116
gpgme_data_t dh_crypto, dh_plain;
117
gpgme_ctx_t ctx;
148
static bool init_gpgme(mandos_context *mc, const char *seckey,
149
const char *pubkey, const char *tempdir){
150
int ret;
118
151
gpgme_error_t rc;
119
ssize_t ret;
120
size_t plaintext_capacity = 0;
121
ssize_t plaintext_length = 0;
122
152
gpgme_engine_info_t engine_info;
123
153
124
if (debug){
125
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
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");
126
192
}
127
193
128
194
/* Init GPGME */
129
195
gpgme_check_version(NULL);
130
196
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
131
if (rc != GPG_ERR_NO_ERROR){
197
if(rc != GPG_ERR_NO_ERROR){
132
198
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
133
199
gpgme_strsource(rc), gpgme_strerror(rc));
134
return -1;
200
return false;
135
201
}
136
202
137
/* Set GPGME home directory for the OpenPGP engine only */
138
rc = gpgme_get_engine_info (&engine_info);
139
if (rc != GPG_ERR_NO_ERROR){
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){
140
206
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
141
207
gpgme_strsource(rc), gpgme_strerror(rc));
142
return -1;
208
return false;
143
209
}
144
210
while(engine_info != NULL){
145
211
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
146
212
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
147
engine_info->file_name, homedir);
213
engine_info->file_name, tempdir);
148
214
break;
149
215
}
150
216
engine_info = engine_info->next;
151
217
}
152
218
if(engine_info == NULL){
153
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
154
return -1;
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");
155
254
}
156
255
157
256
/* Create new GPGME data buffer from memory cryptotext */
158
257
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
159
258
0);
160
if (rc != GPG_ERR_NO_ERROR){
259
if(rc != GPG_ERR_NO_ERROR){
161
260
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
162
261
gpgme_strsource(rc), gpgme_strerror(rc));
163
262
return -1;
165
264
166
265
/* Create new empty GPGME data buffer for the plaintext */
167
266
rc = gpgme_data_new(&dh_plain);
168
if (rc != GPG_ERR_NO_ERROR){
267
if(rc != GPG_ERR_NO_ERROR){
169
268
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
170
269
gpgme_strsource(rc), gpgme_strerror(rc));
171
270
gpgme_data_release(dh_crypto);
172
271
return -1;
173
272
}
174
273
175
/* Create new GPGME "context" */
176
rc = gpgme_new(&ctx);
177
if (rc != GPG_ERR_NO_ERROR){
178
fprintf(stderr, "bad gpgme_new: %s: %s\n",
179
gpgme_strsource(rc), gpgme_strerror(rc));
180
plaintext_length = -1;
181
goto decrypt_end;
182
}
183
184
274
/* Decrypt data from the cryptotext data buffer to the plaintext
185
275
data buffer */
186
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
187
if (rc != GPG_ERR_NO_ERROR){
276
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
277
if(rc != GPG_ERR_NO_ERROR){
188
278
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
189
279
gpgme_strsource(rc), gpgme_strerror(rc));
190
280
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
}
191
309
goto decrypt_end;
192
310
}
193
311
195
313
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
196
314
}
197
315
198
if (debug){
199
gpgme_decrypt_result_t result;
200
result = gpgme_op_decrypt_result(ctx);
201
if (result == NULL){
202
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
203
} else {
204
fprintf(stderr, "Unsupported algorithm: %s\n",
205
result->unsupported_algorithm);
206
fprintf(stderr, "Wrong key usage: %d\n",
207
result->wrong_key_usage);
208
if(result->file_name != NULL){
209
fprintf(stderr, "File name: %s\n", result->file_name);
210
}
211
gpgme_recipient_t recipient;
212
recipient = result->recipients;
213
if(recipient){
214
while(recipient != NULL){
215
fprintf(stderr, "Public key algorithm: %s\n",
216
gpgme_pubkey_algo_name(recipient->pubkey_algo));
217
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
218
fprintf(stderr, "Secret key available: %s\n",
219
recipient->status == GPG_ERR_NO_SECKEY
220
? "No" : "Yes");
221
recipient = recipient->next;
222
}
223
}
224
}
225
}
226
227
316
/* Seek back to the beginning of the GPGME plaintext data buffer */
228
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
229
perror("pgpme_data_seek");
317
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
318
perror("gpgme_data_seek");
230
319
plaintext_length = -1;
231
320
goto decrypt_end;
232
321
}
236
325
plaintext_capacity = adjustbuffer(plaintext,
237
326
(size_t)plaintext_length,
238
327
plaintext_capacity);
239
if (plaintext_capacity == 0){
328
if(plaintext_capacity == 0){
240
329
perror("adjustbuffer");
241
330
plaintext_length = -1;
242
331
goto decrypt_end;
245
334
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
246
335
BUFFER_SIZE);
247
336
/* Print the data, if any */
248
if (ret == 0){
337
if(ret == 0){
249
338
/* EOF */
250
339
break;
251
340
}
256
345
}
257
346
plaintext_length += ret;
258
347
}
259
348
260
349
if(debug){
261
350
fprintf(stderr, "Decrypted password is: ");
262
351
for(ssize_t i = 0; i < plaintext_length; i++){
275
364
return plaintext_length;
276
365
}
277
366
278
static const char * safer_gnutls_strerror (int value) {
279
const char *ret = gnutls_strerror (value);
280
if (ret == NULL)
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)
281
371
ret = "(unknown)";
282
372
return ret;
283
373
}
289
379
}
290
380
291
381
static int init_gnutls_global(mandos_context *mc,
292
const char *pubkeyfile,
293
const char *seckeyfile){
382
const char *pubkeyfilename,
383
const char *seckeyfilename){
294
384
int ret;
295
385
296
386
if(debug){
297
387
fprintf(stderr, "Initializing GnuTLS\n");
298
388
}
299
300
if ((ret = gnutls_global_init ())
301
!= GNUTLS_E_SUCCESS) {
302
fprintf (stderr, "GnuTLS global_init: %s\n",
303
safer_gnutls_strerror(ret));
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));
304
394
return -1;
305
395
}
306
396
307
if (debug){
397
if(debug){
308
398
/* "Use a log level over 10 to enable all debugging options."
309
399
* - GnuTLS manual
310
400
*/
313
403
}
314
404
315
405
/* OpenPGP credentials */
316
if ((ret = gnutls_certificate_allocate_credentials (&mc->cred))
317
!= GNUTLS_E_SUCCESS) {
318
fprintf (stderr, "GnuTLS memory error: %s\n",
319
safer_gnutls_strerror(ret));
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();
320
414
return -1;
321
415
}
322
416
323
417
if(debug){
324
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
325
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
326
seckeyfile);
418
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
419
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
420
seckeyfilename);
327
421
}
328
422
329
423
ret = gnutls_certificate_set_openpgp_key_file
330
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
331
if (ret != GNUTLS_E_SUCCESS) {
424
(mc->cred, pubkeyfilename, seckeyfilename,
425
GNUTLS_OPENPGP_FMT_BASE64);
426
if(ret != GNUTLS_E_SUCCESS) {
332
427
fprintf(stderr,
333
428
"Error[%d] while reading the OpenPGP key pair ('%s',"
334
" '%s')\n", ret, pubkeyfile, seckeyfile);
335
fprintf(stdout, "The GnuTLS error is: %s\n",
429
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
430
fprintf(stderr, "The GnuTLS error is: %s\n",
336
431
safer_gnutls_strerror(ret));
337
return -1;
432
goto globalfail;
338
433
}
339
434
340
435
/* GnuTLS server initialization */
341
436
ret = gnutls_dh_params_init(&mc->dh_params);
342
if (ret != GNUTLS_E_SUCCESS) {
343
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
344
" %s\n", safer_gnutls_strerror(ret));
345
return -1;
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;
346
441
}
347
442
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
348
if (ret != GNUTLS_E_SUCCESS) {
349
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
350
safer_gnutls_strerror(ret));
351
return -1;
443
if(ret != GNUTLS_E_SUCCESS) {
444
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
445
safer_gnutls_strerror(ret));
446
goto globalfail;
352
447
}
353
448
354
449
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
355
450
356
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;
357
459
}
358
460
359
461
static int init_gnutls_session(mandos_context *mc,
361
463
int ret;
362
464
/* GnuTLS session creation */
363
465
ret = gnutls_init(session, GNUTLS_SERVER);
364
if (ret != GNUTLS_E_SUCCESS){
466
if(ret != GNUTLS_E_SUCCESS){
365
467
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
366
468
safer_gnutls_strerror(ret));
367
469
}
369
471
{
370
472
const char *err;
371
473
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
372
if (ret != GNUTLS_E_SUCCESS) {
474
if(ret != GNUTLS_E_SUCCESS) {
373
475
fprintf(stderr, "Syntax error at: %s\n", err);
374
476
fprintf(stderr, "GnuTLS error: %s\n",
375
477
safer_gnutls_strerror(ret));
478
gnutls_deinit(*session);
376
479
return -1;
377
480
}
378
481
}
379
482
380
483
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
381
484
mc->cred);
382
if (ret != GNUTLS_E_SUCCESS) {
485
if(ret != GNUTLS_E_SUCCESS) {
383
486
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
384
487
safer_gnutls_strerror(ret));
488
gnutls_deinit(*session);
385
489
return -1;
386
490
}
387
491
388
492
/* ignore client certificate if any. */
389
gnutls_certificate_server_set_request (*session,
390
GNUTLS_CERT_IGNORE);
493
gnutls_certificate_server_set_request(*session,
494
GNUTLS_CERT_IGNORE);
391
495
392
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
496
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
393
497
394
498
return 0;
395
499
}
403
507
AvahiIfIndex if_index,
404
508
mandos_context *mc){
405
509
int ret, tcp_sd;
510
ssize_t sret;
406
511
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
407
512
char *buffer = NULL;
408
513
char *decrypted_buffer;
414
519
char interface[IF_NAMESIZE];
415
520
gnutls_session_t session;
416
521
417
ret = init_gnutls_session (mc, &session);
418
if (ret != 0){
522
ret = init_gnutls_session(mc, &session);
523
if(ret != 0){
419
524
return -1;
420
525
}
421
526
422
527
if(debug){
423
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
424
ip, port);
528
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
529
"\n", ip, port);
425
530
}
426
531
427
532
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
429
534
perror("socket");
430
535
return -1;
431
536
}
432
537
433
538
if(debug){
434
539
if(if_indextoname((unsigned int)if_index, interface) == NULL){
435
540
perror("if_indextoname");
438
543
fprintf(stderr, "Binding to interface %s\n", interface);
439
544
}
440
545
441
memset(&to,0,sizeof(to)); /* Spurious warning */
546
memset(&to, 0, sizeof(to));
442
547
to.in6.sin6_family = AF_INET6;
443
548
/* It would be nice to have a way to detect if we were passed an
444
549
IPv4 address here. Now we assume an IPv6 address. */
445
550
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
446
if (ret < 0 ){
551
if(ret < 0 ){
447
552
perror("inet_pton");
448
553
return -1;
449
554
}
451
556
fprintf(stderr, "Bad address: %s\n", ip);
452
557
return -1;
453
558
}
454
to.in6.sin6_port = htons(port); /* Spurious warning */
559
to.in6.sin6_port = htons(port); /* Spurious warnings from
560
-Wconversion and
561
-Wunreachable-code */
455
562
456
563
to.in6.sin6_scope_id = (uint32_t)if_index;
457
564
458
565
if(debug){
459
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
566
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
567
port);
460
568
char addrstr[INET6_ADDRSTRLEN] = "";
461
569
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
462
570
sizeof(addrstr)) == NULL){
469
577
}
470
578
471
579
ret = connect(tcp_sd, &to.in, sizeof(to));
472
if (ret < 0){
580
if(ret < 0){
473
581
perror("connect");
474
582
return -1;
475
583
}
476
584
477
585
const char *out = mandos_protocol_version;
478
586
written = 0;
479
while (true){
587
while(true){
480
588
size_t out_size = strlen(out);
481
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
589
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
482
590
out_size - written));
483
if (ret == -1){
591
if(ret == -1){
484
592
perror("write");
485
593
retval = -1;
486
594
goto mandos_end;
489
597
if(written < out_size){
490
598
continue;
491
599
} else {
492
if (out == mandos_protocol_version){
600
if(out == mandos_protocol_version){
493
601
written = 0;
494
602
out = "\r\n";
495
603
} else {
497
605
}
498
606
}
499
607
}
500
608
501
609
if(debug){
502
610
fprintf(stderr, "Establishing TLS session with %s\n", ip);
503
611
}
504
612
505
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
506
507
ret = gnutls_handshake (session);
508
509
if (ret != GNUTLS_E_SUCCESS){
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){
510
620
if(debug){
511
621
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
512
gnutls_perror (ret);
622
gnutls_perror(ret);
513
623
}
514
624
retval = -1;
515
625
goto mandos_end;
521
631
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
522
632
ip);
523
633
}
524
634
525
635
while(true){
526
636
buffer_capacity = adjustbuffer(&buffer, buffer_length,
527
637
buffer_capacity);
528
if (buffer_capacity == 0){
638
if(buffer_capacity == 0){
529
639
perror("adjustbuffer");
530
640
retval = -1;
531
641
goto mandos_end;
532
642
}
533
643
534
ret = gnutls_record_recv(session, buffer+buffer_length,
535
BUFFER_SIZE);
536
if (ret == 0){
644
sret = gnutls_record_recv(session, buffer+buffer_length,
645
BUFFER_SIZE);
646
if(sret == 0){
537
647
break;
538
648
}
539
if (ret < 0){
540
switch(ret){
649
if(sret < 0){
650
switch(sret){
541
651
case GNUTLS_E_INTERRUPTED:
542
652
case GNUTLS_E_AGAIN:
543
653
break;
544
654
case GNUTLS_E_REHANDSHAKE:
545
ret = gnutls_handshake (session);
546
if (ret < 0){
655
do{
656
ret = gnutls_handshake(session);
657
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
658
if(ret < 0){
547
659
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
548
gnutls_perror (ret);
660
gnutls_perror(ret);
549
661
retval = -1;
550
662
goto mandos_end;
551
663
}
554
666
fprintf(stderr, "Unknown error while reading data from"
555
667
" encrypted session with Mandos server\n");
556
668
retval = -1;
557
gnutls_bye (session, GNUTLS_SHUT_RDWR);
669
gnutls_bye(session, GNUTLS_SHUT_RDWR);
558
670
goto mandos_end;
559
671
}
560
672
} else {
561
buffer_length += (size_t) ret;
673
buffer_length += (size_t) sret;
562
674
}
563
675
}
564
676
566
678
fprintf(stderr, "Closing TLS session\n");
567
679
}
568
680
569
gnutls_bye (session, GNUTLS_SHUT_RDWR);
681
gnutls_bye(session, GNUTLS_SHUT_RDWR);
570
682
571
if (buffer_length > 0){
572
decrypted_buffer_size = pgp_packet_decrypt(buffer,
683
if(buffer_length > 0){
684
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
573
685
buffer_length,
574
&decrypted_buffer,
575
keydir);
576
if (decrypted_buffer_size >= 0){
686
&decrypted_buffer);
687
if(decrypted_buffer_size >= 0){
577
688
written = 0;
578
689
while(written < (size_t) decrypted_buffer_size){
579
ret = (int)fwrite (decrypted_buffer + written, 1,
580
(size_t)decrypted_buffer_size - written,
581
stdout);
690
ret = (int)fwrite(decrypted_buffer + written, 1,
691
(size_t)decrypted_buffer_size - written,
692
stdout);
582
693
if(ret == 0 and ferror(stdout)){
583
694
if(debug){
584
695
fprintf(stderr, "Error writing encrypted data: %s\n",
593
704
} else {
594
705
retval = -1;
595
706
}
707
} else {
708
retval = -1;
596
709
}
597
710
598
711
/* Shutdown procedure */
599
712
600
713
mandos_end:
601
714
free(buffer);
602
close(tcp_sd);
603
gnutls_deinit (session);
604
gnutls_certificate_free_credentials (mc->cred);
605
gnutls_global_deinit ();
715
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
716
if(ret == -1){
717
perror("close");
718
}
719
gnutls_deinit(session);
606
720
return retval;
607
721
}
608
722
621
735
flags,
622
736
void* userdata) {
623
737
mandos_context *mc = userdata;
624
assert(r); /* Spurious warning */
738
assert(r);
625
739
626
740
/* Called whenever a service has been resolved successfully or
627
741
timed out */
628
742
629
switch (event) {
743
switch(event) {
630
744
default:
631
745
case AVAHI_RESOLVER_FAILURE:
632
746
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
639
753
char ip[AVAHI_ADDRESS_STR_MAX];
640
754
avahi_address_snprint(ip, sizeof(ip), address);
641
755
if(debug){
642
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
643
" port %d\n", name, host_name, ip, interface, port);
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);
644
759
}
645
760
int ret = start_mandos_communication(ip, port, interface, mc);
646
if (ret == 0){
647
exit(EXIT_SUCCESS);
761
if(ret == 0){
762
avahi_simple_poll_quit(mc->simple_poll);
648
763
}
649
764
}
650
765
}
662
777
flags,
663
778
void* userdata) {
664
779
mandos_context *mc = userdata;
665
assert(b); /* Spurious warning */
780
assert(b);
666
781
667
782
/* Called whenever a new services becomes available on the LAN or
668
783
is removed from the LAN */
669
784
670
switch (event) {
785
switch(event) {
671
786
default:
672
787
case AVAHI_BROWSER_FAILURE:
673
788
682
797
the callback function is called the Avahi server will free the
683
798
resolver for us. */
684
799
685
if (!(avahi_s_service_resolver_new(mc->server, interface,
800
if(!(avahi_s_service_resolver_new(mc->server, interface,
686
801
protocol, name, type, domain,
687
802
AVAHI_PROTO_INET6, 0,
688
803
resolve_callback, mc)))
702
817
}
703
818
}
704
819
705
/* Combines file name and path and returns the malloced new
706
string. some sane checks could/should be added */
707
static const char *combinepath(const char *first, const char *second){
708
size_t f_len = strlen(first);
709
size_t s_len = strlen(second);
710
char *tmp = malloc(f_len + s_len + 2);
711
if (tmp == NULL){
712
return NULL;
713
}
714
if(f_len > 0){
715
memcpy(tmp, first, f_len); /* Spurious warning */
716
}
717
tmp[f_len] = '/';
718
if(s_len > 0){
719
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
720
}
721
tmp[f_len + 1 + s_len] = '\0';
722
return tmp;
723
}
724
725
726
820
int main(int argc, char *argv[]){
727
821
AvahiSServiceBrowser *sb = NULL;
728
822
int error;
729
823
int ret;
824
intmax_t tmpmax;
825
int numchars;
730
826
int exitcode = EXIT_SUCCESS;
731
827
const char *interface = "eth0";
732
828
struct ifreq network;
734
830
uid_t uid;
735
831
gid_t gid;
736
832
char *connect_to = NULL;
833
char tempdir[] = "/tmp/mandosXXXXXX";
737
834
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
738
const char *pubkeyfile = "pubkey.txt";
739
const char *seckeyfile = "seckey.txt";
835
const char *seckey = PATHDIR "/" SECKEY;
836
const char *pubkey = PATHDIR "/" PUBKEY;
837
740
838
mandos_context mc = { .simple_poll = NULL, .server = NULL,
741
.dh_bits = 1024, .priority = "SECURE256"};
839
.dh_bits = 1024, .priority = "SECURE256"
840
":!CTYPE-X.509:+CTYPE-OPENPGP" };
841
bool gnutls_initalized = false;
842
bool gpgme_initalized = false;
742
843
743
844
{
744
845
struct argp_option options[] = {
745
846
{ .name = "debug", .key = 128,
746
847
.doc = "Debug mode", .group = 3 },
747
848
{ .name = "connect", .key = 'c',
748
.arg = "IP",
749
.doc = "Connect directly to a sepcified mandos server",
849
.arg = "ADDRESS:PORT",
850
.doc = "Connect directly to a specific Mandos server",
750
851
.group = 1 },
751
852
{ .name = "interface", .key = 'i',
752
.arg = "INTERFACE",
753
.doc = "Interface that Avahi will conntect through",
754
.group = 1 },
755
{ .name = "keydir", .key = 'd',
756
.arg = "KEYDIR",
757
.doc = "Directory where the openpgp keyring is",
853
.arg = "NAME",
854
.doc = "Interface that will be used to search for Mandos"
855
" servers",
758
856
.group = 1 },
759
857
{ .name = "seckey", .key = 's',
760
.arg = "SECKEY",
761
.doc = "Secret openpgp key for gnutls authentication",
858
.arg = "FILE",
859
.doc = "OpenPGP secret key file base name",
762
860
.group = 1 },
763
861
{ .name = "pubkey", .key = 'p',
764
.arg = "PUBKEY",
765
.doc = "Public openpgp key for gnutls authentication",
862
.arg = "FILE",
863
.doc = "OpenPGP public key file base name",
766
864
.group = 2 },
767
865
{ .name = "dh-bits", .key = 129,
768
866
.arg = "BITS",
769
.doc = "dh-bits to use in gnutls communication",
867
.doc = "Bit length of the prime number used in the"
868
" Diffie-Hellman key exchange",
770
869
.group = 2 },
771
870
{ .name = "priority", .key = 130,
772
.arg = "PRIORITY",
773
.doc = "GNUTLS priority", .group = 1 },
871
.arg = "STRING",
872
.doc = "GnuTLS priority string for the TLS handshake",
873
.group = 1 },
774
874
{ .name = NULL }
775
875
};
776
777
876
778
error_t parse_opt (int key, char *arg,
779
struct argp_state *state) {
780
/* Get the INPUT argument from `argp_parse', which we know is
781
a pointer to our plugin list pointer. */
782
switch (key) {
783
case 128:
877
error_t parse_opt(int key, char *arg,
878
struct argp_state *state) {
879
switch(key) {
880
case 128: /* --debug */
784
881
debug = true;
785
882
break;
786
case 'c':
883
case 'c': /* --connect */
787
884
connect_to = arg;
788
885
break;
789
case 'i':
886
case 'i': /* --interface */
790
887
interface = arg;
791
888
break;
792
case 'd':
793
keydir = arg;
794
break;
795
case 's':
796
seckeyfile = arg;
797
break;
798
case 'p':
799
pubkeyfile = arg;
800
break;
801
case 129:
802
errno = 0;
803
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
804
if (errno){
805
perror("strtol");
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");
806
900
exit(EXIT_FAILURE);
807
901
}
902
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
808
903
break;
809
case 130:
904
case 130: /* --priority */
810
905
mc.priority = arg;
811
906
break;
812
907
case ARGP_KEY_ARG:
813
argp_usage (state);
908
argp_usage(state);
909
case ARGP_KEY_END:
814
910
break;
815
case ARGP_KEY_END:
816
break;
817
911
default:
818
912
return ARGP_ERR_UNKNOWN;
819
913
}
820
914
return 0;
821
915
}
822
916
823
917
struct argp argp = { .options = options, .parser = parse_opt,
824
918
.args_doc = "",
825
919
.doc = "Mandos client -- Get and decrypt"
826
" passwords from mandos server" };
827
argp_parse (&argp, argc, argv, 0, 0, NULL);
828
}
829
830
pubkeyfile = combinepath(keydir, pubkeyfile);
831
if (pubkeyfile == NULL){
832
perror("combinepath");
833
exitcode = EXIT_FAILURE;
834
goto end;
835
}
836
837
seckeyfile = combinepath(keydir, seckeyfile);
838
if (seckeyfile == NULL){
839
perror("combinepath");
840
goto end;
841
}
842
843
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
844
if (ret == -1){
845
fprintf(stderr, "init_gnutls_global\n");
846
goto end;
847
}
848
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
849
959
uid = getuid();
850
960
gid = getgid();
851
961
852
962
ret = setuid(uid);
853
if (ret == -1){
963
if(ret == -1){
854
964
perror("setuid");
855
965
}
856
966
857
967
setgid(gid);
858
if (ret == -1){
968
if(ret == -1){
859
969
perror("setgid");
860
970
}
861
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;
993
}
994
862
995
if_index = (AvahiIfIndex) if_nametoindex(interface);
863
996
if(if_index == 0){
864
997
fprintf(stderr, "No such interface: \"%s\"\n", interface);
874
1007
exitcode = EXIT_FAILURE;
875
1008
goto end;
876
1009
}
877
errno = 0;
878
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
879
if(errno){
880
perror("Bad port number");
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");
881
1015
exitcode = EXIT_FAILURE;
882
1016
goto end;
883
1017
}
1018
port = (uint16_t)tmpmax;
884
1019
*address = '\0';
885
1020
address = connect_to;
886
1021
ret = start_mandos_communication(address, port, if_index, &mc);
892
1027
goto end;
893
1028
}
894
1029
895
/* If the interface is down, bring it up */
896
{
897
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
898
if(sd < 0) {
899
perror("socket");
900
exitcode = EXIT_FAILURE;
901
goto end;
902
}
903
strcpy(network.ifr_name, interface); /* Spurious warning */
904
ret = ioctl(sd, SIOCGIFFLAGS, &network);
905
if(ret == -1){
906
perror("ioctl SIOCGIFFLAGS");
907
exitcode = EXIT_FAILURE;
908
goto end;
909
}
910
if((network.ifr_flags & IFF_UP) == 0){
911
network.ifr_flags |= IFF_UP;
912
ret = ioctl(sd, SIOCSIFFLAGS, &network);
913
if(ret == -1){
914
perror("ioctl SIOCSIFFLAGS");
915
exitcode = EXIT_FAILURE;
916
goto end;
917
}
918
}
919
close(sd);
920
}
921
922
if (not debug){
1030
if(not debug){
923
1031
avahi_set_log_function(empty_log);
924
1032
}
925
1033
928
1036
929
1037
/* Allocate main Avahi loop object */
930
1038
mc.simple_poll = avahi_simple_poll_new();
931
if (mc.simple_poll == NULL) {
1039
if(mc.simple_poll == NULL) {
932
1040
fprintf(stderr, "Avahi: Failed to create simple poll"
933
1041
" object.\n");
934
1042
exitcode = EXIT_FAILURE;
935
1043
goto end;
936
1044
}
937
1045
938
1046
{
939
1047
AvahiServerConfig config;
940
1048
/* Do not publish any local Zeroconf records */
943
1051
config.publish_addresses = 0;
944
1052
config.publish_workstation = 0;
945
1053
config.publish_domain = 0;
946
1054
947
1055
/* Allocate a new server */
948
1056
mc.server = avahi_server_new(avahi_simple_poll_get
949
1057
(mc.simple_poll), &config, NULL,
950
1058
NULL, &error);
951
1059
952
1060
/* Free the Avahi configuration data */
953
1061
avahi_server_config_free(&config);
954
1062
}
955
1063
956
1064
/* Check if creating the Avahi server object succeeded */
957
if (mc.server == NULL) {
1065
if(mc.server == NULL) {
958
1066
fprintf(stderr, "Failed to create Avahi server: %s\n",
959
1067
avahi_strerror(error));
960
1068
exitcode = EXIT_FAILURE;
966
1074
AVAHI_PROTO_INET6,
967
1075
"_mandos._tcp", NULL, 0,
968
1076
browse_callback, &mc);
969
if (sb == NULL) {
1077
if(sb == NULL) {
970
1078
fprintf(stderr, "Failed to create service browser: %s\n",
971
1079
avahi_strerror(avahi_server_errno(mc.server)));
972
1080
exitcode = EXIT_FAILURE;
974
1082
}
975
1083
976
1084
/* Run the main loop */
977
978
if (debug){
1085
1086
if(debug){
979
1087
fprintf(stderr, "Starting Avahi loop search\n");
980
1088
}
981
1089
982
1090
avahi_simple_poll_loop(mc.simple_poll);
983
1091
984
1092
end:
985
986
if (debug){
1093
1094
if(debug){
987
1095
fprintf(stderr, "%s exiting\n", argv[0]);
988
1096
}
989
1097
990
1098
/* Cleanup things */
991
if (sb != NULL)
1099
if(sb != NULL)
992
1100
avahi_s_service_browser_free(sb);
993
1101
994
if (mc.server != NULL)
1102
if(mc.server != NULL)
995
1103
avahi_server_free(mc.server);
996
997
if (mc.simple_poll != NULL)
1104
1105
if(mc.simple_poll != NULL)
998
1106
avahi_simple_poll_free(mc.simple_poll);
999
free(pubkeyfile);
1000
free(seckeyfile);
1001
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
1002
1157
return exitcode;
1003
1158
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0