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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:
- network-protocol.txt
- files renamed:
- mandos-client.c => plugin-runner.c
- mandos-client.xml => plugin-runner.xml
- plugins.d/password-request.c => plugins.d/mandos-client.c
- plugins.d/password-request.xml => plugins.d/mandos-client.xml
- 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> /* fprintf(), stderr, fwrite(), stdout,
38
ferror() */
38
#include <stdio.h> /* fprintf(), stderr, fwrite(),
39
stdout, ferror(), sscanf(),
40
remove() */
39
41
#include <stdint.h> /* uint16_t, uint32_t */
40
42
#include <stddef.h> /* NULL, size_t, ssize_t */
41
43
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
42
44
srand() */
43
45
#include <stdbool.h> /* bool, true */
44
46
#include <string.h> /* memset(), strcmp(), strlen(),
45
strerror(), memcpy(), strcpy() */
47
strerror(), asprintf(), strcpy() */
46
48
#include <sys/ioctl.h> /* ioctl */
47
49
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
48
50
sockaddr_in6, PF_INET6,
49
51
SOCK_STREAM, INET6_ADDRSTRLEN,
50
uid_t, gid_t */
51
#include <inttypes.h> /* PRIu16 */
52
uid_t, gid_t, open(), opendir(),
53
DIR */
54
#include <sys/stat.h> /* open() */
52
55
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
53
56
struct in6_addr, inet_pton(),
54
57
connect() */
58
#include <fcntl.h> /* open() */
59
#include <dirent.h> /* opendir(), struct dirent, readdir()
60
*/
61
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
55
62
#include <assert.h> /* assert() */
56
63
#include <errno.h> /* perror(), errno */
57
#include <time.h> /* time() */
64
#include <time.h> /* nanosleep(), time() */
58
65
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
59
66
SIOCSIFFLAGS, if_indextoname(),
60
67
if_nametoindex(), IF_NAMESIZE */
68
#include <netinet/in.h>
61
69
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
62
70
getuid(), getgid(), setuid(),
63
71
setgid() */
64
#include <netinet/in.h>
65
72
#include <arpa/inet.h> /* inet_pton(), htons */
66
#include <iso646.h> /* not, and */
73
#include <iso646.h> /* not, and, or */
67
74
#include <argp.h> /* struct argp_option, error_t, struct
68
75
argp_state, struct argp,
69
76
argp_parse(), ARGP_KEY_ARG,
70
77
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
78
#include <sys/klog.h> /* klogctl() */
71
79
72
80
/* Avahi */
73
81
/* All Avahi types, constants and functions
81
89
#include <avahi-common/error.h>
82
90
83
91
/* GnuTLS */
84
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and functions
92
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
93
functions:
85
94
gnutls_*
86
95
init_gnutls_session(),
87
96
GNUTLS_* */
88
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
97
#include <gnutls/openpgp.h>
98
/* gnutls_certificate_set_openpgp_key_file(),
89
99
GNUTLS_OPENPGP_FMT_BASE64 */
90
100
91
101
/* GPGME */
92
#include <gpgme.h> /* All GPGME types, constants and functions
102
#include <gpgme.h> /* All GPGME types, constants and
103
functions:
93
104
gpgme_*
94
105
GPGME_PROTOCOL_OpenPGP,
95
106
GPG_ERR_NO_* */
96
107
97
108
#define BUFFER_SIZE 256
98
109
110
#define PATHDIR "/conf/conf.d/mandos"
111
#define SECKEY "seckey.txt"
112
#define PUBKEY "pubkey.txt"
113
99
114
bool debug = false;
100
static const char *keydir = "/conf/conf.d/mandos";
101
115
static const char mandos_protocol_version[] = "1";
102
const char *argp_program_version = "password-request 1.0";
116
const char *argp_program_version = "mandos-client " VERSION;
103
117
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
104
118
105
119
/* Used for passing in values through the Avahi callback functions */
110
124
unsigned int dh_bits;
111
125
gnutls_dh_params_t dh_params;
112
126
const char *priority;
127
gpgme_ctx_t ctx;
113
128
} mandos_context;
114
129
115
130
/*
119
134
*/
120
135
size_t adjustbuffer(char **buffer, size_t buffer_length,
121
136
size_t buffer_capacity){
122
if (buffer_length + BUFFER_SIZE > buffer_capacity){
137
if(buffer_length + BUFFER_SIZE > buffer_capacity){
123
138
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
124
if (buffer == NULL){
139
if(buffer == NULL){
125
140
return 0;
126
141
}
127
142
buffer_capacity += BUFFER_SIZE;
130
145
}
131
146
132
147
/*
133
* Decrypt OpenPGP data using keyrings in HOMEDIR.
134
* Returns -1 on error
148
* Initialize GPGME.
135
149
*/
136
static ssize_t pgp_packet_decrypt (const char *cryptotext,
137
size_t crypto_size,
138
char **plaintext,
139
const char *homedir){
140
gpgme_data_t dh_crypto, dh_plain;
141
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;
142
153
gpgme_error_t rc;
143
ssize_t ret;
144
size_t plaintext_capacity = 0;
145
ssize_t plaintext_length = 0;
146
154
gpgme_engine_info_t engine_info;
147
155
148
if (debug){
149
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");
150
194
}
151
195
152
196
/* Init GPGME */
153
197
gpgme_check_version(NULL);
154
198
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
155
if (rc != GPG_ERR_NO_ERROR){
199
if(rc != GPG_ERR_NO_ERROR){
156
200
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
157
201
gpgme_strsource(rc), gpgme_strerror(rc));
158
return -1;
202
return false;
159
203
}
160
204
161
/* Set GPGME home directory for the OpenPGP engine only */
162
rc = gpgme_get_engine_info (&engine_info);
163
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){
164
208
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
165
209
gpgme_strsource(rc), gpgme_strerror(rc));
166
return -1;
210
return false;
167
211
}
168
212
while(engine_info != NULL){
169
213
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
170
214
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
171
engine_info->file_name, homedir);
215
engine_info->file_name, tempdir);
172
216
break;
173
217
}
174
218
engine_info = engine_info->next;
175
219
}
176
220
if(engine_info == NULL){
177
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
178
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");
179
256
}
180
257
181
258
/* Create new GPGME data buffer from memory cryptotext */
182
259
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
183
260
0);
184
if (rc != GPG_ERR_NO_ERROR){
261
if(rc != GPG_ERR_NO_ERROR){
185
262
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
186
263
gpgme_strsource(rc), gpgme_strerror(rc));
187
264
return -1;
189
266
190
267
/* Create new empty GPGME data buffer for the plaintext */
191
268
rc = gpgme_data_new(&dh_plain);
192
if (rc != GPG_ERR_NO_ERROR){
269
if(rc != GPG_ERR_NO_ERROR){
193
270
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
194
271
gpgme_strsource(rc), gpgme_strerror(rc));
195
272
gpgme_data_release(dh_crypto);
196
273
return -1;
197
274
}
198
275
199
/* Create new GPGME "context" */
200
rc = gpgme_new(&ctx);
201
if (rc != GPG_ERR_NO_ERROR){
202
fprintf(stderr, "bad gpgme_new: %s: %s\n",
203
gpgme_strsource(rc), gpgme_strerror(rc));
204
plaintext_length = -1;
205
goto decrypt_end;
206
}
207
208
276
/* Decrypt data from the cryptotext data buffer to the plaintext
209
277
data buffer */
210
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
211
if (rc != GPG_ERR_NO_ERROR){
278
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
279
if(rc != GPG_ERR_NO_ERROR){
212
280
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
213
281
gpgme_strsource(rc), gpgme_strerror(rc));
214
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
}
215
311
goto decrypt_end;
216
312
}
217
313
219
315
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
220
316
}
221
317
222
if (debug){
223
gpgme_decrypt_result_t result;
224
result = gpgme_op_decrypt_result(ctx);
225
if (result == NULL){
226
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
227
} else {
228
fprintf(stderr, "Unsupported algorithm: %s\n",
229
result->unsupported_algorithm);
230
fprintf(stderr, "Wrong key usage: %u\n",
231
result->wrong_key_usage);
232
if(result->file_name != NULL){
233
fprintf(stderr, "File name: %s\n", result->file_name);
234
}
235
gpgme_recipient_t recipient;
236
recipient = result->recipients;
237
if(recipient){
238
while(recipient != NULL){
239
fprintf(stderr, "Public key algorithm: %s\n",
240
gpgme_pubkey_algo_name(recipient->pubkey_algo));
241
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
242
fprintf(stderr, "Secret key available: %s\n",
243
recipient->status == GPG_ERR_NO_SECKEY
244
? "No" : "Yes");
245
recipient = recipient->next;
246
}
247
}
248
}
249
}
250
251
318
/* Seek back to the beginning of the GPGME plaintext data buffer */
252
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
253
perror("pgpme_data_seek");
319
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
320
perror("gpgme_data_seek");
254
321
plaintext_length = -1;
255
322
goto decrypt_end;
256
323
}
260
327
plaintext_capacity = adjustbuffer(plaintext,
261
328
(size_t)plaintext_length,
262
329
plaintext_capacity);
263
if (plaintext_capacity == 0){
330
if(plaintext_capacity == 0){
264
331
perror("adjustbuffer");
265
332
plaintext_length = -1;
266
333
goto decrypt_end;
269
336
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
270
337
BUFFER_SIZE);
271
338
/* Print the data, if any */
272
if (ret == 0){
339
if(ret == 0){
273
340
/* EOF */
274
341
break;
275
342
}
280
347
}
281
348
plaintext_length += ret;
282
349
}
283
350
284
351
if(debug){
285
352
fprintf(stderr, "Decrypted password is: ");
286
353
for(ssize_t i = 0; i < plaintext_length; i++){
299
366
return plaintext_length;
300
367
}
301
368
302
static const char * safer_gnutls_strerror (int value) {
303
const char *ret = gnutls_strerror (value);
304
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)
305
373
ret = "(unknown)";
306
374
return ret;
307
375
}
313
381
}
314
382
315
383
static int init_gnutls_global(mandos_context *mc,
316
const char *pubkeyfile,
317
const char *seckeyfile){
384
const char *pubkeyfilename,
385
const char *seckeyfilename){
318
386
int ret;
319
387
320
388
if(debug){
322
390
}
323
391
324
392
ret = gnutls_global_init();
325
if (ret != GNUTLS_E_SUCCESS) {
326
fprintf (stderr, "GnuTLS global_init: %s\n",
327
safer_gnutls_strerror(ret));
393
if(ret != GNUTLS_E_SUCCESS) {
394
fprintf(stderr, "GnuTLS global_init: %s\n",
395
safer_gnutls_strerror(ret));
328
396
return -1;
329
397
}
330
398
331
if (debug){
399
if(debug){
332
400
/* "Use a log level over 10 to enable all debugging options."
333
401
* - GnuTLS manual
334
402
*/
338
406
339
407
/* OpenPGP credentials */
340
408
gnutls_certificate_allocate_credentials(&mc->cred);
341
if (ret != GNUTLS_E_SUCCESS){
342
fprintf (stderr, "GnuTLS memory error: %s\n",
343
safer_gnutls_strerror(ret));
344
gnutls_global_deinit ();
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();
345
416
return -1;
346
417
}
347
418
348
419
if(debug){
349
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
350
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
351
seckeyfile);
420
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
421
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
422
seckeyfilename);
352
423
}
353
424
354
425
ret = gnutls_certificate_set_openpgp_key_file
355
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
356
if (ret != GNUTLS_E_SUCCESS) {
426
(mc->cred, pubkeyfilename, seckeyfilename,
427
GNUTLS_OPENPGP_FMT_BASE64);
428
if(ret != GNUTLS_E_SUCCESS) {
357
429
fprintf(stderr,
358
430
"Error[%d] while reading the OpenPGP key pair ('%s',"
359
" '%s')\n", ret, pubkeyfile, seckeyfile);
360
fprintf(stdout, "The GnuTLS error is: %s\n",
431
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
432
fprintf(stderr, "The GnuTLS error is: %s\n",
361
433
safer_gnutls_strerror(ret));
362
434
goto globalfail;
363
435
}
364
436
365
437
/* GnuTLS server initialization */
366
438
ret = gnutls_dh_params_init(&mc->dh_params);
367
if (ret != GNUTLS_E_SUCCESS) {
368
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
369
" %s\n", safer_gnutls_strerror(ret));
439
if(ret != GNUTLS_E_SUCCESS) {
440
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
441
" %s\n", safer_gnutls_strerror(ret));
370
442
goto globalfail;
371
443
}
372
444
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
373
if (ret != GNUTLS_E_SUCCESS) {
374
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
375
safer_gnutls_strerror(ret));
445
if(ret != GNUTLS_E_SUCCESS) {
446
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
447
safer_gnutls_strerror(ret));
376
448
goto globalfail;
377
449
}
378
450
379
451
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
380
452
381
453
return 0;
382
454
383
455
globalfail:
384
456
385
457
gnutls_certificate_free_credentials(mc->cred);
386
458
gnutls_global_deinit();
459
gnutls_dh_params_deinit(mc->dh_params);
387
460
return -1;
388
389
461
}
390
462
391
463
static int init_gnutls_session(mandos_context *mc,
393
465
int ret;
394
466
/* GnuTLS session creation */
395
467
ret = gnutls_init(session, GNUTLS_SERVER);
396
if (ret != GNUTLS_E_SUCCESS){
468
if(ret != GNUTLS_E_SUCCESS){
397
469
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
398
470
safer_gnutls_strerror(ret));
399
471
}
401
473
{
402
474
const char *err;
403
475
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
404
if (ret != GNUTLS_E_SUCCESS) {
476
if(ret != GNUTLS_E_SUCCESS) {
405
477
fprintf(stderr, "Syntax error at: %s\n", err);
406
478
fprintf(stderr, "GnuTLS error: %s\n",
407
479
safer_gnutls_strerror(ret));
408
gnutls_deinit (*session);
480
gnutls_deinit(*session);
409
481
return -1;
410
482
}
411
483
}
412
484
413
485
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
414
486
mc->cred);
415
if (ret != GNUTLS_E_SUCCESS) {
487
if(ret != GNUTLS_E_SUCCESS) {
416
488
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
417
489
safer_gnutls_strerror(ret));
418
gnutls_deinit (*session);
490
gnutls_deinit(*session);
419
491
return -1;
420
492
}
421
493
422
494
/* ignore client certificate if any. */
423
gnutls_certificate_server_set_request (*session,
424
GNUTLS_CERT_IGNORE);
495
gnutls_certificate_server_set_request(*session,
496
GNUTLS_CERT_IGNORE);
425
497
426
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
498
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
427
499
428
500
return 0;
429
501
}
437
509
AvahiIfIndex if_index,
438
510
mandos_context *mc){
439
511
int ret, tcp_sd;
512
ssize_t sret;
440
513
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
441
514
char *buffer = NULL;
442
515
char *decrypted_buffer;
448
521
char interface[IF_NAMESIZE];
449
522
gnutls_session_t session;
450
523
451
ret = init_gnutls_session (mc, &session);
452
if (ret != 0){
524
ret = init_gnutls_session(mc, &session);
525
if(ret != 0){
453
526
return -1;
454
527
}
455
528
463
536
perror("socket");
464
537
return -1;
465
538
}
466
539
467
540
if(debug){
468
541
if(if_indextoname((unsigned int)if_index, interface) == NULL){
469
542
perror("if_indextoname");
472
545
fprintf(stderr, "Binding to interface %s\n", interface);
473
546
}
474
547
475
memset(&to,0,sizeof(to)); /* Spurious warning */
548
memset(&to, 0, sizeof(to));
476
549
to.in6.sin6_family = AF_INET6;
477
550
/* It would be nice to have a way to detect if we were passed an
478
551
IPv4 address here. Now we assume an IPv6 address. */
479
552
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
480
if (ret < 0 ){
553
if(ret < 0 ){
481
554
perror("inet_pton");
482
555
return -1;
483
556
}
485
558
fprintf(stderr, "Bad address: %s\n", ip);
486
559
return -1;
487
560
}
488
to.in6.sin6_port = htons(port); /* Spurious warning */
561
to.in6.sin6_port = htons(port); /* Spurious warnings from
562
-Wconversion and
563
-Wunreachable-code */
489
564
490
565
to.in6.sin6_scope_id = (uint32_t)if_index;
491
566
504
579
}
505
580
506
581
ret = connect(tcp_sd, &to.in, sizeof(to));
507
if (ret < 0){
582
if(ret < 0){
508
583
perror("connect");
509
584
return -1;
510
585
}
511
586
512
587
const char *out = mandos_protocol_version;
513
588
written = 0;
514
while (true){
589
while(true){
515
590
size_t out_size = strlen(out);
516
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
591
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
517
592
out_size - written));
518
if (ret == -1){
593
if(ret == -1){
519
594
perror("write");
520
595
retval = -1;
521
596
goto mandos_end;
524
599
if(written < out_size){
525
600
continue;
526
601
} else {
527
if (out == mandos_protocol_version){
602
if(out == mandos_protocol_version){
528
603
written = 0;
529
604
out = "\r\n";
530
605
} else {
532
607
}
533
608
}
534
609
}
535
610
536
611
if(debug){
537
612
fprintf(stderr, "Establishing TLS session with %s\n", ip);
538
613
}
539
614
540
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
541
615
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
616
542
617
do{
543
ret = gnutls_handshake (session);
618
ret = gnutls_handshake(session);
544
619
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
545
620
546
if (ret != GNUTLS_E_SUCCESS){
621
if(ret != GNUTLS_E_SUCCESS){
547
622
if(debug){
548
623
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
549
gnutls_perror (ret);
624
gnutls_perror(ret);
550
625
}
551
626
retval = -1;
552
627
goto mandos_end;
558
633
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
559
634
ip);
560
635
}
561
636
562
637
while(true){
563
638
buffer_capacity = adjustbuffer(&buffer, buffer_length,
564
639
buffer_capacity);
565
if (buffer_capacity == 0){
640
if(buffer_capacity == 0){
566
641
perror("adjustbuffer");
567
642
retval = -1;
568
643
goto mandos_end;
569
644
}
570
645
571
ret = gnutls_record_recv(session, buffer+buffer_length,
572
BUFFER_SIZE);
573
if (ret == 0){
646
sret = gnutls_record_recv(session, buffer+buffer_length,
647
BUFFER_SIZE);
648
if(sret == 0){
574
649
break;
575
650
}
576
if (ret < 0){
577
switch(ret){
651
if(sret < 0){
652
switch(sret){
578
653
case GNUTLS_E_INTERRUPTED:
579
654
case GNUTLS_E_AGAIN:
580
655
break;
581
656
case GNUTLS_E_REHANDSHAKE:
582
657
do{
583
ret = gnutls_handshake (session);
658
ret = gnutls_handshake(session);
584
659
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
585
if (ret < 0){
660
if(ret < 0){
586
661
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
587
gnutls_perror (ret);
662
gnutls_perror(ret);
588
663
retval = -1;
589
664
goto mandos_end;
590
665
}
593
668
fprintf(stderr, "Unknown error while reading data from"
594
669
" encrypted session with Mandos server\n");
595
670
retval = -1;
596
gnutls_bye (session, GNUTLS_SHUT_RDWR);
671
gnutls_bye(session, GNUTLS_SHUT_RDWR);
597
672
goto mandos_end;
598
673
}
599
674
} else {
600
buffer_length += (size_t) ret;
675
buffer_length += (size_t) sret;
601
676
}
602
677
}
603
678
605
680
fprintf(stderr, "Closing TLS session\n");
606
681
}
607
682
608
gnutls_bye (session, GNUTLS_SHUT_RDWR);
683
gnutls_bye(session, GNUTLS_SHUT_RDWR);
609
684
610
if (buffer_length > 0){
611
decrypted_buffer_size = pgp_packet_decrypt(buffer,
685
if(buffer_length > 0){
686
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
612
687
buffer_length,
613
&decrypted_buffer,
614
keydir);
615
if (decrypted_buffer_size >= 0){
688
&decrypted_buffer);
689
if(decrypted_buffer_size >= 0){
616
690
written = 0;
617
691
while(written < (size_t) decrypted_buffer_size){
618
ret = (int)fwrite (decrypted_buffer + written, 1,
619
(size_t)decrypted_buffer_size - written,
620
stdout);
692
ret = (int)fwrite(decrypted_buffer + written, 1,
693
(size_t)decrypted_buffer_size - written,
694
stdout);
621
695
if(ret == 0 and ferror(stdout)){
622
696
if(debug){
623
697
fprintf(stderr, "Error writing encrypted data: %s\n",
632
706
} else {
633
707
retval = -1;
634
708
}
709
} else {
710
retval = -1;
635
711
}
636
712
637
713
/* Shutdown procedure */
638
714
639
715
mandos_end:
640
716
free(buffer);
641
close(tcp_sd);
642
gnutls_deinit (session);
717
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
718
if(ret == -1){
719
perror("close");
720
}
721
gnutls_deinit(session);
643
722
return retval;
644
723
}
645
724
658
737
flags,
659
738
void* userdata) {
660
739
mandos_context *mc = userdata;
661
assert(r); /* Spurious warning */
740
assert(r);
662
741
663
742
/* Called whenever a service has been resolved successfully or
664
743
timed out */
665
744
666
switch (event) {
745
switch(event) {
667
746
default:
668
747
case AVAHI_RESOLVER_FAILURE:
669
748
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
677
756
avahi_address_snprint(ip, sizeof(ip), address);
678
757
if(debug){
679
758
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
680
PRIu16 ") on port %d\n", name, host_name, ip,
681
interface, port);
759
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
760
ip, (intmax_t)interface, port);
682
761
}
683
762
int ret = start_mandos_communication(ip, port, interface, mc);
684
if (ret == 0){
685
exit(EXIT_SUCCESS);
763
if(ret == 0){
764
avahi_simple_poll_quit(mc->simple_poll);
686
765
}
687
766
}
688
767
}
700
779
flags,
701
780
void* userdata) {
702
781
mandos_context *mc = userdata;
703
assert(b); /* Spurious warning */
782
assert(b);
704
783
705
784
/* Called whenever a new services becomes available on the LAN or
706
785
is removed from the LAN */
707
786
708
switch (event) {
787
switch(event) {
709
788
default:
710
789
case AVAHI_BROWSER_FAILURE:
711
790
720
799
the callback function is called the Avahi server will free the
721
800
resolver for us. */
722
801
723
if (!(avahi_s_service_resolver_new(mc->server, interface,
802
if(!(avahi_s_service_resolver_new(mc->server, interface,
724
803
protocol, name, type, domain,
725
804
AVAHI_PROTO_INET6, 0,
726
805
resolve_callback, mc)))
740
819
}
741
820
}
742
821
743
/* Combines file name and path and returns the malloced new
744
string. some sane checks could/should be added */
745
static const char *combinepath(const char *first, const char *second){
746
size_t f_len = strlen(first);
747
size_t s_len = strlen(second);
748
char *tmp = malloc(f_len + s_len + 2);
749
if (tmp == NULL){
750
return NULL;
751
}
752
if(f_len > 0){
753
memcpy(tmp, first, f_len); /* Spurious warning */
754
}
755
tmp[f_len] = '/';
756
if(s_len > 0){
757
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
758
}
759
tmp[f_len + 1 + s_len] = '\0';
760
return tmp;
761
}
762
763
764
822
int main(int argc, char *argv[]){
765
823
AvahiSServiceBrowser *sb = NULL;
766
824
int error;
767
825
int ret;
826
intmax_t tmpmax;
827
int numchars;
768
828
int exitcode = EXIT_SUCCESS;
769
829
const char *interface = "eth0";
770
830
struct ifreq network;
772
832
uid_t uid;
773
833
gid_t gid;
774
834
char *connect_to = NULL;
835
char tempdir[] = "/tmp/mandosXXXXXX";
836
bool tempdir_created = false;
775
837
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
776
const char *pubkeyfile = "pubkey.txt";
777
const char *seckeyfile = "seckey.txt";
838
const char *seckey = PATHDIR "/" SECKEY;
839
const char *pubkey = PATHDIR "/" PUBKEY;
840
778
841
mandos_context mc = { .simple_poll = NULL, .server = NULL,
779
.dh_bits = 1024, .priority = "SECURE256"};
780
bool gnutls_initalized = false;
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;
781
847
782
848
{
783
849
struct argp_option options[] = {
784
850
{ .name = "debug", .key = 128,
785
851
.doc = "Debug mode", .group = 3 },
786
852
{ .name = "connect", .key = 'c',
787
.arg = "IP",
788
.doc = "Connect directly to a sepcified mandos server",
853
.arg = "ADDRESS:PORT",
854
.doc = "Connect directly to a specific Mandos server",
789
855
.group = 1 },
790
856
{ .name = "interface", .key = 'i',
791
.arg = "INTERFACE",
792
.doc = "Interface that Avahi will conntect through",
793
.group = 1 },
794
{ .name = "keydir", .key = 'd',
795
.arg = "KEYDIR",
796
.doc = "Directory where the openpgp keyring is",
857
.arg = "NAME",
858
.doc = "Interface that will be used to search for Mandos"
859
" servers",
797
860
.group = 1 },
798
861
{ .name = "seckey", .key = 's',
799
.arg = "SECKEY",
800
.doc = "Secret openpgp key for gnutls authentication",
862
.arg = "FILE",
863
.doc = "OpenPGP secret key file base name",
801
864
.group = 1 },
802
865
{ .name = "pubkey", .key = 'p',
803
.arg = "PUBKEY",
804
.doc = "Public openpgp key for gnutls authentication",
866
.arg = "FILE",
867
.doc = "OpenPGP public key file base name",
805
868
.group = 2 },
806
869
{ .name = "dh-bits", .key = 129,
807
870
.arg = "BITS",
808
.doc = "dh-bits to use in gnutls communication",
871
.doc = "Bit length of the prime number used in the"
872
" Diffie-Hellman key exchange",
809
873
.group = 2 },
810
874
{ .name = "priority", .key = 130,
811
.arg = "PRIORITY",
812
.doc = "GNUTLS priority", .group = 1 },
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 },
813
882
{ .name = NULL }
814
883
};
815
816
884
817
error_t parse_opt (int key, char *arg,
818
struct argp_state *state) {
819
/* Get the INPUT argument from `argp_parse', which we know is
820
a pointer to our plugin list pointer. */
821
switch (key) {
822
case 128:
885
error_t parse_opt(int key, char *arg,
886
struct argp_state *state) {
887
switch(key) {
888
case 128: /* --debug */
823
889
debug = true;
824
890
break;
825
case 'c':
891
case 'c': /* --connect */
826
892
connect_to = arg;
827
893
break;
828
case 'i':
894
case 'i': /* --interface */
829
895
interface = arg;
830
896
break;
831
case 'd':
832
keydir = arg;
833
break;
834
case 's':
835
seckeyfile = arg;
836
break;
837
case 'p':
838
pubkeyfile = arg;
839
break;
840
case 129:
841
errno = 0;
842
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
843
if (errno){
844
perror("strtol");
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");
845
908
exit(EXIT_FAILURE);
846
909
}
910
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
847
911
break;
848
case 130:
912
case 130: /* --priority */
849
913
mc.priority = arg;
850
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;
851
922
case ARGP_KEY_ARG:
852
argp_usage (state);
923
argp_usage(state);
924
case ARGP_KEY_END:
853
925
break;
854
case ARGP_KEY_END:
855
break;
856
926
default:
857
927
return ARGP_ERR_UNKNOWN;
858
928
}
859
929
return 0;
860
930
}
861
931
862
932
struct argp argp = { .options = options, .parser = parse_opt,
863
933
.args_doc = "",
864
934
.doc = "Mandos client -- Get and decrypt"
865
" passwords from mandos server" };
866
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
867
if (ret == ARGP_ERR_UNKNOWN){
868
fprintf(stderr, "Unkown error while parsing arguments\n");
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");
869
939
exitcode = EXIT_FAILURE;
870
940
goto end;
871
941
}
872
942
}
873
874
pubkeyfile = combinepath(keydir, pubkeyfile);
875
if (pubkeyfile == NULL){
876
perror("combinepath");
877
exitcode = EXIT_FAILURE;
878
goto end;
879
}
880
881
seckeyfile = combinepath(keydir, seckeyfile);
882
if (seckeyfile == NULL){
883
perror("combinepath");
884
goto end;
885
}
886
887
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
888
if (ret == -1){
889
fprintf(stderr, "init_gnutls_global\n");
890
goto end;
891
} else {
892
gnutls_initalized = true;
893
}
894
943
895
944
/* If the interface is down, bring it up */
896
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
897
953
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
898
954
if(sd < 0) {
899
955
perror("socket");
900
956
exitcode = EXIT_FAILURE;
957
ret = klogctl(7, NULL, 0);
958
if(ret == -1){
959
perror("klogctl");
960
}
901
961
goto end;
902
962
}
903
strcpy(network.ifr_name, interface); /* Spurious warning */
963
strcpy(network.ifr_name, interface);
904
964
ret = ioctl(sd, SIOCGIFFLAGS, &network);
905
965
if(ret == -1){
906
966
perror("ioctl SIOCGIFFLAGS");
967
ret = klogctl(7, NULL, 0);
968
if(ret == -1){
969
perror("klogctl");
970
}
907
971
exitcode = EXIT_FAILURE;
908
972
goto end;
909
973
}
913
977
if(ret == -1){
914
978
perror("ioctl SIOCSIFFLAGS");
915
979
exitcode = EXIT_FAILURE;
980
ret = klogctl(7, NULL, 0);
981
if(ret == -1){
982
perror("klogctl");
983
}
916
984
goto end;
917
985
}
918
986
}
919
close(sd);
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
}
920
1007
}
921
1008
922
1009
uid = getuid();
923
1010
gid = getgid();
924
1011
1012
setgid(gid);
1013
if(ret == -1){
1014
perror("setgid");
1015
}
1016
925
1017
ret = setuid(uid);
926
if (ret == -1){
1018
if(ret == -1){
927
1019
perror("setuid");
928
1020
}
929
1021
930
setgid(gid);
931
if (ret == -1){
932
perror("setgid");
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;
933
1043
}
934
1044
935
1045
if_index = (AvahiIfIndex) if_nametoindex(interface);
936
1046
if(if_index == 0){
937
1047
fprintf(stderr, "No such interface: \"%s\"\n", interface);
938
exit(EXIT_FAILURE);
1048
exitcode = EXIT_FAILURE;
1049
goto end;
939
1050
}
940
1051
941
1052
if(connect_to != NULL){
947
1058
exitcode = EXIT_FAILURE;
948
1059
goto end;
949
1060
}
950
errno = 0;
951
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
952
if(errno){
953
perror("Bad port number");
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");
954
1066
exitcode = EXIT_FAILURE;
955
1067
goto end;
956
1068
}
1069
port = (uint16_t)tmpmax;
957
1070
*address = '\0';
958
1071
address = connect_to;
959
1072
ret = start_mandos_communication(address, port, if_index, &mc);
965
1078
goto end;
966
1079
}
967
1080
968
if (not debug){
1081
if(not debug){
969
1082
avahi_set_log_function(empty_log);
970
1083
}
971
1084
974
1087
975
1088
/* Allocate main Avahi loop object */
976
1089
mc.simple_poll = avahi_simple_poll_new();
977
if (mc.simple_poll == NULL) {
1090
if(mc.simple_poll == NULL) {
978
1091
fprintf(stderr, "Avahi: Failed to create simple poll"
979
1092
" object.\n");
980
1093
exitcode = EXIT_FAILURE;
981
1094
goto end;
982
1095
}
983
1096
984
1097
{
985
1098
AvahiServerConfig config;
986
1099
/* Do not publish any local Zeroconf records */
989
1102
config.publish_addresses = 0;
990
1103
config.publish_workstation = 0;
991
1104
config.publish_domain = 0;
992
1105
993
1106
/* Allocate a new server */
994
1107
mc.server = avahi_server_new(avahi_simple_poll_get
995
1108
(mc.simple_poll), &config, NULL,
996
1109
NULL, &error);
997
1110
998
1111
/* Free the Avahi configuration data */
999
1112
avahi_server_config_free(&config);
1000
1113
}
1001
1114
1002
1115
/* Check if creating the Avahi server object succeeded */
1003
if (mc.server == NULL) {
1116
if(mc.server == NULL) {
1004
1117
fprintf(stderr, "Failed to create Avahi server: %s\n",
1005
1118
avahi_strerror(error));
1006
1119
exitcode = EXIT_FAILURE;
1012
1125
AVAHI_PROTO_INET6,
1013
1126
"_mandos._tcp", NULL, 0,
1014
1127
browse_callback, &mc);
1015
if (sb == NULL) {
1128
if(sb == NULL) {
1016
1129
fprintf(stderr, "Failed to create service browser: %s\n",
1017
1130
avahi_strerror(avahi_server_errno(mc.server)));
1018
1131
exitcode = EXIT_FAILURE;
1020
1133
}
1021
1134
1022
1135
/* Run the main loop */
1023
1024
if (debug){
1136
1137
if(debug){
1025
1138
fprintf(stderr, "Starting Avahi loop search\n");
1026
1139
}
1027
1140
1028
1141
avahi_simple_poll_loop(mc.simple_poll);
1029
1142
1030
1143
end:
1031
1032
if (debug){
1144
1145
if(debug){
1033
1146
fprintf(stderr, "%s exiting\n", argv[0]);
1034
1147
}
1035
1148
1036
1149
/* Cleanup things */
1037
if (sb != NULL)
1150
if(sb != NULL)
1038
1151
avahi_s_service_browser_free(sb);
1039
1152
1040
if (mc.server != NULL)
1153
if(mc.server != NULL)
1041
1154
avahi_server_free(mc.server);
1042
1043
if (mc.simple_poll != NULL)
1155
1156
if(mc.simple_poll != NULL)
1044
1157
avahi_simple_poll_free(mc.simple_poll);
1045
free(pubkeyfile);
1046
free(seckeyfile);
1047
1048
if (gnutls_initalized){
1158
1159
if(gnutls_initialized){
1049
1160
gnutls_certificate_free_credentials(mc.cred);
1050
gnutls_global_deinit ();
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
}
1051
1211
}
1052
1212
1053
1213
return exitcode;
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0