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» Revision
24.1.32
(compared to revision 288.1.1)
: plugins.d/password-request.c
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- Committer: Björn Påhlsson
- Date: 2008-08-09 20:11:07 UTC
- mto: (24.1.154 mandos) (237.4.3 mandos-release)
- mto: This revision was merged to the branch mainline in revision 56.
- Revision ID: belorn@braxen-20080809201107-81j2nuz9p0u7x51v
removed * [[http://en.tldp.org/HOWTO/Software-Release-Practice-HOWTO/][Software Release Practice HOWTO]]
- files added:
- network-protocol.txt
- files removed:
- .bzr-builddeb
- debian
- debian/po
- files renamed:
- 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() */
37
#include <stdio.h> /* fprintf(), stderr, fwrite(), stdout,
38
ferror() */
41
39
#include <stdint.h> /* uint16_t, uint32_t */
42
40
#include <stddef.h> /* NULL, size_t, ssize_t */
43
41
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
44
42
srand() */
45
43
#include <stdbool.h> /* bool, true */
46
44
#include <string.h> /* memset(), strcmp(), strlen(),
47
strerror(), asprintf(), strcpy() */
45
strerror(), memcpy(), strcpy() */
48
46
#include <sys/ioctl.h> /* ioctl */
47
#include <net/if.h> /* ifreq, SIOCGIFFLAGS, SIOCSIFFLAGS,
48
IFF_UP */
49
49
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
50
50
sockaddr_in6, PF_INET6,
51
51
SOCK_STREAM, INET6_ADDRSTRLEN,
52
uid_t, gid_t, open(), opendir(),
53
DIR */
54
#include <sys/stat.h> /* open() */
52
uid_t, gid_t */
55
53
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
56
54
struct in6_addr, inet_pton(),
57
55
connect() */
58
#include <fcntl.h> /* open() */
59
#include <dirent.h> /* opendir(), struct dirent, readdir()
60
*/
61
#include <inttypes.h> /* PRIu16, intmax_t, SCNdMAX */
62
56
#include <assert.h> /* assert() */
63
57
#include <errno.h> /* perror(), errno */
64
58
#include <time.h> /* time() */
65
59
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
66
60
SIOCSIFFLAGS, if_indextoname(),
67
61
if_nametoindex(), IF_NAMESIZE */
68
#include <netinet/in.h>
69
62
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
70
63
getuid(), getgid(), setuid(),
71
64
setgid() */
65
#include <netinet/in.h>
72
66
#include <arpa/inet.h> /* inet_pton(), htons */
73
#include <iso646.h> /* not, and, or */
67
#include <iso646.h> /* not, and */
74
68
#include <argp.h> /* struct argp_option, error_t, struct
75
69
argp_state, struct argp,
76
70
argp_parse(), ARGP_KEY_ARG,
88
82
#include <avahi-common/error.h>
89
83
90
84
/* GnuTLS */
91
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
92
functions:
85
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and functions
93
86
gnutls_*
94
87
init_gnutls_session(),
95
88
GNUTLS_* */
96
#include <gnutls/openpgp.h>
97
/* gnutls_certificate_set_openpgp_key_file(),
89
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
98
90
GNUTLS_OPENPGP_FMT_BASE64 */
99
91
100
92
/* GPGME */
101
#include <gpgme.h> /* All GPGME types, constants and
102
functions:
93
#include <gpgme.h> /* All GPGME types, constants and functions
103
94
gpgme_*
104
95
GPGME_PROTOCOL_OpenPGP,
105
96
GPG_ERR_NO_* */
106
97
107
98
#define BUFFER_SIZE 256
108
99
109
#define PATHDIR "/conf/conf.d/mandos"
110
#define SECKEY "seckey.txt"
111
#define PUBKEY "pubkey.txt"
112
113
100
bool debug = false;
101
static const char *keydir = "/conf/conf.d/mandos";
114
102
static const char mandos_protocol_version[] = "1";
115
const char *argp_program_version = "mandos-client " VERSION;
103
const char *argp_program_version = "mandosclient 0.9";
116
104
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
117
105
118
106
/* Used for passing in values through the Avahi callback functions */
123
111
unsigned int dh_bits;
124
112
gnutls_dh_params_t dh_params;
125
113
const char *priority;
126
gpgme_ctx_t ctx;
127
114
} mandos_context;
128
115
129
116
/*
133
120
*/
134
121
size_t adjustbuffer(char **buffer, size_t buffer_length,
135
122
size_t buffer_capacity){
136
if(buffer_length + BUFFER_SIZE > buffer_capacity){
123
if (buffer_length + BUFFER_SIZE > buffer_capacity){
137
124
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
138
if(buffer == NULL){
125
if (buffer == NULL){
139
126
return 0;
140
127
}
141
128
buffer_capacity += BUFFER_SIZE;
144
131
}
145
132
146
133
/*
147
* Initialize GPGME.
134
* Decrypt OpenPGP data using keyrings in HOMEDIR.
135
* Returns -1 on error
148
136
*/
149
static bool init_gpgme(mandos_context *mc, const char *seckey,
150
const char *pubkey, const char *tempdir){
151
int ret;
137
static ssize_t pgp_packet_decrypt (const char *cryptotext,
138
size_t crypto_size,
139
char **plaintext,
140
const char *homedir){
141
gpgme_data_t dh_crypto, dh_plain;
142
gpgme_ctx_t ctx;
152
143
gpgme_error_t rc;
144
ssize_t ret;
145
size_t plaintext_capacity = 0;
146
ssize_t plaintext_length = 0;
153
147
gpgme_engine_info_t engine_info;
154
148
155
156
/*
157
* Helper function to insert pub and seckey to the engine 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");
149
if (debug){
150
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
193
151
}
194
152
195
153
/* Init GPGME */
196
154
gpgme_check_version(NULL);
197
155
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
198
if(rc != GPG_ERR_NO_ERROR){
156
if (rc != GPG_ERR_NO_ERROR){
199
157
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
200
158
gpgme_strsource(rc), gpgme_strerror(rc));
201
return false;
159
return -1;
202
160
}
203
161
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){
162
/* Set GPGME home directory for the OpenPGP engine only */
163
rc = gpgme_get_engine_info (&engine_info);
164
if (rc != GPG_ERR_NO_ERROR){
207
165
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
208
166
gpgme_strsource(rc), gpgme_strerror(rc));
209
return false;
167
return -1;
210
168
}
211
169
while(engine_info != NULL){
212
170
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
213
171
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
214
engine_info->file_name, tempdir);
172
engine_info->file_name, homedir);
215
173
break;
216
174
}
217
175
engine_info = engine_info->next;
218
176
}
219
177
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");
178
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
179
return -1;
255
180
}
256
181
257
182
/* Create new GPGME data buffer from memory cryptotext */
258
183
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
259
184
0);
260
if(rc != GPG_ERR_NO_ERROR){
185
if (rc != GPG_ERR_NO_ERROR){
261
186
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
262
187
gpgme_strsource(rc), gpgme_strerror(rc));
263
188
return -1;
265
190
266
191
/* Create new empty GPGME data buffer for the plaintext */
267
192
rc = gpgme_data_new(&dh_plain);
268
if(rc != GPG_ERR_NO_ERROR){
193
if (rc != GPG_ERR_NO_ERROR){
269
194
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
270
195
gpgme_strsource(rc), gpgme_strerror(rc));
271
196
gpgme_data_release(dh_crypto);
272
197
return -1;
273
198
}
274
199
200
/* Create new GPGME "context" */
201
rc = gpgme_new(&ctx);
202
if (rc != GPG_ERR_NO_ERROR){
203
fprintf(stderr, "bad gpgme_new: %s: %s\n",
204
gpgme_strsource(rc), gpgme_strerror(rc));
205
plaintext_length = -1;
206
goto decrypt_end;
207
}
208
275
209
/* Decrypt data from the cryptotext data buffer to the plaintext
276
210
data buffer */
277
rc = gpgme_op_decrypt(mc->ctx, dh_crypto, dh_plain);
278
if(rc != GPG_ERR_NO_ERROR){
211
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
212
if (rc != GPG_ERR_NO_ERROR){
279
213
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
280
214
gpgme_strsource(rc), gpgme_strerror(rc));
281
215
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
216
goto decrypt_end;
311
217
}
312
218
314
220
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
315
221
}
316
222
223
if (debug){
224
gpgme_decrypt_result_t result;
225
result = gpgme_op_decrypt_result(ctx);
226
if (result == NULL){
227
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
228
} else {
229
fprintf(stderr, "Unsupported algorithm: %s\n",
230
result->unsupported_algorithm);
231
fprintf(stderr, "Wrong key usage: %d\n",
232
result->wrong_key_usage);
233
if(result->file_name != NULL){
234
fprintf(stderr, "File name: %s\n", result->file_name);
235
}
236
gpgme_recipient_t recipient;
237
recipient = result->recipients;
238
if(recipient){
239
while(recipient != NULL){
240
fprintf(stderr, "Public key algorithm: %s\n",
241
gpgme_pubkey_algo_name(recipient->pubkey_algo));
242
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
243
fprintf(stderr, "Secret key available: %s\n",
244
recipient->status == GPG_ERR_NO_SECKEY
245
? "No" : "Yes");
246
recipient = recipient->next;
247
}
248
}
249
}
250
}
251
317
252
/* 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");
253
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
254
perror("pgpme_data_seek");
320
255
plaintext_length = -1;
321
256
goto decrypt_end;
322
257
}
326
261
plaintext_capacity = adjustbuffer(plaintext,
327
262
(size_t)plaintext_length,
328
263
plaintext_capacity);
329
if(plaintext_capacity == 0){
264
if (plaintext_capacity == 0){
330
265
perror("adjustbuffer");
331
266
plaintext_length = -1;
332
267
goto decrypt_end;
335
270
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
336
271
BUFFER_SIZE);
337
272
/* Print the data, if any */
338
if(ret == 0){
273
if (ret == 0){
339
274
/* EOF */
340
275
break;
341
276
}
346
281
}
347
282
plaintext_length += ret;
348
283
}
349
284
350
285
if(debug){
351
286
fprintf(stderr, "Decrypted password is: ");
352
287
for(ssize_t i = 0; i < plaintext_length; i++){
365
300
return plaintext_length;
366
301
}
367
302
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)
303
static const char * safer_gnutls_strerror (int value) {
304
const char *ret = gnutls_strerror (value);
305
if (ret == NULL)
372
306
ret = "(unknown)";
373
307
return ret;
374
308
}
380
314
}
381
315
382
316
static int init_gnutls_global(mandos_context *mc,
383
const char *pubkeyfilename,
384
const char *seckeyfilename){
317
const char *pubkeyfile,
318
const char *seckeyfile){
385
319
int ret;
386
320
387
321
if(debug){
389
323
}
390
324
391
325
ret = gnutls_global_init();
392
if(ret != GNUTLS_E_SUCCESS) {
393
fprintf(stderr, "GnuTLS global_init: %s\n",
394
safer_gnutls_strerror(ret));
326
if (ret != GNUTLS_E_SUCCESS) {
327
fprintf (stderr, "GnuTLS global_init: %s\n",
328
safer_gnutls_strerror(ret));
395
329
return -1;
396
330
}
397
331
398
if(debug){
332
if (debug){
399
333
/* "Use a log level over 10 to enable all debugging options."
400
334
* - GnuTLS manual
401
335
*/
405
339
406
340
/* OpenPGP credentials */
407
341
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();
342
if (ret != GNUTLS_E_SUCCESS){
343
fprintf (stderr, "GnuTLS memory error: %s\n",
344
safer_gnutls_strerror(ret));
345
gnutls_global_deinit ();
415
346
return -1;
416
347
}
417
348
418
349
if(debug){
419
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
420
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
421
seckeyfilename);
350
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
351
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
352
seckeyfile);
422
353
}
423
354
424
355
ret = gnutls_certificate_set_openpgp_key_file
425
(mc->cred, pubkeyfilename, seckeyfilename,
426
GNUTLS_OPENPGP_FMT_BASE64);
427
if(ret != GNUTLS_E_SUCCESS) {
356
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
357
if (ret != GNUTLS_E_SUCCESS) {
428
358
fprintf(stderr,
429
359
"Error[%d] while reading the OpenPGP key pair ('%s',"
430
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
431
fprintf(stderr, "The GnuTLS error is: %s\n",
360
" '%s')\n", ret, pubkeyfile, seckeyfile);
361
fprintf(stdout, "The GnuTLS error is: %s\n",
432
362
safer_gnutls_strerror(ret));
433
363
goto globalfail;
434
364
}
435
365
436
366
/* GnuTLS server initialization */
437
367
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));
368
if (ret != GNUTLS_E_SUCCESS) {
369
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
370
" %s\n", safer_gnutls_strerror(ret));
441
371
goto globalfail;
442
372
}
443
373
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));
374
if (ret != GNUTLS_E_SUCCESS) {
375
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
376
safer_gnutls_strerror(ret));
447
377
goto globalfail;
448
378
}
449
379
450
380
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
451
381
452
382
return 0;
453
383
454
384
globalfail:
455
385
456
386
gnutls_certificate_free_credentials(mc->cred);
457
387
gnutls_global_deinit();
458
gnutls_dh_params_deinit(mc->dh_params);
459
388
return -1;
389
460
390
}
461
391
462
392
static int init_gnutls_session(mandos_context *mc,
464
394
int ret;
465
395
/* GnuTLS session creation */
466
396
ret = gnutls_init(session, GNUTLS_SERVER);
467
if(ret != GNUTLS_E_SUCCESS){
397
if (ret != GNUTLS_E_SUCCESS){
468
398
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
469
399
safer_gnutls_strerror(ret));
470
400
}
472
402
{
473
403
const char *err;
474
404
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
475
if(ret != GNUTLS_E_SUCCESS) {
405
if (ret != GNUTLS_E_SUCCESS) {
476
406
fprintf(stderr, "Syntax error at: %s\n", err);
477
407
fprintf(stderr, "GnuTLS error: %s\n",
478
408
safer_gnutls_strerror(ret));
479
gnutls_deinit(*session);
409
gnutls_deinit (*session);
480
410
return -1;
481
411
}
482
412
}
483
413
484
414
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
485
415
mc->cred);
486
if(ret != GNUTLS_E_SUCCESS) {
416
if (ret != GNUTLS_E_SUCCESS) {
487
417
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
488
418
safer_gnutls_strerror(ret));
489
gnutls_deinit(*session);
419
gnutls_deinit (*session);
490
420
return -1;
491
421
}
492
422
493
423
/* ignore client certificate if any. */
494
gnutls_certificate_server_set_request(*session,
495
GNUTLS_CERT_IGNORE);
424
gnutls_certificate_server_set_request (*session,
425
GNUTLS_CERT_IGNORE);
496
426
497
gnutls_dh_set_prime_bits(*session, mc->dh_bits);
427
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
498
428
499
429
return 0;
500
430
}
508
438
AvahiIfIndex if_index,
509
439
mandos_context *mc){
510
440
int ret, tcp_sd;
511
ssize_t sret;
512
441
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
513
442
char *buffer = NULL;
514
443
char *decrypted_buffer;
520
449
char interface[IF_NAMESIZE];
521
450
gnutls_session_t session;
522
451
523
ret = init_gnutls_session(mc, &session);
524
if(ret != 0){
452
ret = init_gnutls_session (mc, &session);
453
if (ret != 0){
525
454
return -1;
526
455
}
527
456
528
457
if(debug){
529
fprintf(stderr, "Setting up a tcp connection to %s, port %" PRIu16
530
"\n", ip, port);
458
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
459
ip, port);
531
460
}
532
461
533
462
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
535
464
perror("socket");
536
465
return -1;
537
466
}
538
467
539
468
if(debug){
540
469
if(if_indextoname((unsigned int)if_index, interface) == NULL){
541
470
perror("if_indextoname");
544
473
fprintf(stderr, "Binding to interface %s\n", interface);
545
474
}
546
475
547
memset(&to, 0, sizeof(to));
476
memset(&to,0,sizeof(to)); /* Spurious warning */
548
477
to.in6.sin6_family = AF_INET6;
549
478
/* It would be nice to have a way to detect if we were passed an
550
479
IPv4 address here. Now we assume an IPv6 address. */
551
480
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
552
if(ret < 0 ){
481
if (ret < 0 ){
553
482
perror("inet_pton");
554
483
return -1;
555
484
}
557
486
fprintf(stderr, "Bad address: %s\n", ip);
558
487
return -1;
559
488
}
560
to.in6.sin6_port = htons(port); /* Spurious warnings from
561
-Wconversion and
562
-Wunreachable-code */
489
to.in6.sin6_port = htons(port); /* Spurious warning */
563
490
564
491
to.in6.sin6_scope_id = (uint32_t)if_index;
565
492
566
493
if(debug){
567
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
568
port);
494
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
569
495
char addrstr[INET6_ADDRSTRLEN] = "";
570
496
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
571
497
sizeof(addrstr)) == NULL){
578
504
}
579
505
580
506
ret = connect(tcp_sd, &to.in, sizeof(to));
581
if(ret < 0){
507
if (ret < 0){
582
508
perror("connect");
583
509
return -1;
584
510
}
585
511
586
512
const char *out = mandos_protocol_version;
587
513
written = 0;
588
while(true){
514
while (true){
589
515
size_t out_size = strlen(out);
590
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
516
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
591
517
out_size - written));
592
if(ret == -1){
518
if (ret == -1){
593
519
perror("write");
594
520
retval = -1;
595
521
goto mandos_end;
598
524
if(written < out_size){
599
525
continue;
600
526
} else {
601
if(out == mandos_protocol_version){
527
if (out == mandos_protocol_version){
602
528
written = 0;
603
529
out = "\r\n";
604
530
} else {
606
532
}
607
533
}
608
534
}
609
535
610
536
if(debug){
611
537
fprintf(stderr, "Establishing TLS session with %s\n", ip);
612
538
}
613
539
614
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
615
540
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
541
616
542
do{
617
ret = gnutls_handshake(session);
543
ret = gnutls_handshake (session);
618
544
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
619
545
620
if(ret != GNUTLS_E_SUCCESS){
546
if (ret != GNUTLS_E_SUCCESS){
621
547
if(debug){
622
548
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
623
gnutls_perror(ret);
549
gnutls_perror (ret);
624
550
}
625
551
retval = -1;
626
552
goto mandos_end;
632
558
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
633
559
ip);
634
560
}
635
561
636
562
while(true){
637
563
buffer_capacity = adjustbuffer(&buffer, buffer_length,
638
564
buffer_capacity);
639
if(buffer_capacity == 0){
565
if (buffer_capacity == 0){
640
566
perror("adjustbuffer");
641
567
retval = -1;
642
568
goto mandos_end;
643
569
}
644
570
645
sret = gnutls_record_recv(session, buffer+buffer_length,
646
BUFFER_SIZE);
647
if(sret == 0){
571
ret = gnutls_record_recv(session, buffer+buffer_length,
572
BUFFER_SIZE);
573
if (ret == 0){
648
574
break;
649
575
}
650
if(sret < 0){
651
switch(sret){
576
if (ret < 0){
577
switch(ret){
652
578
case GNUTLS_E_INTERRUPTED:
653
579
case GNUTLS_E_AGAIN:
654
580
break;
655
581
case GNUTLS_E_REHANDSHAKE:
656
582
do{
657
ret = gnutls_handshake(session);
583
ret = gnutls_handshake (session);
658
584
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
659
if(ret < 0){
585
if (ret < 0){
660
586
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
661
gnutls_perror(ret);
587
gnutls_perror (ret);
662
588
retval = -1;
663
589
goto mandos_end;
664
590
}
667
593
fprintf(stderr, "Unknown error while reading data from"
668
594
" encrypted session with Mandos server\n");
669
595
retval = -1;
670
gnutls_bye(session, GNUTLS_SHUT_RDWR);
596
gnutls_bye (session, GNUTLS_SHUT_RDWR);
671
597
goto mandos_end;
672
598
}
673
599
} else {
674
buffer_length += (size_t) sret;
600
buffer_length += (size_t) ret;
675
601
}
676
602
}
677
603
679
605
fprintf(stderr, "Closing TLS session\n");
680
606
}
681
607
682
gnutls_bye(session, GNUTLS_SHUT_RDWR);
608
gnutls_bye (session, GNUTLS_SHUT_RDWR);
683
609
684
if(buffer_length > 0){
685
decrypted_buffer_size = pgp_packet_decrypt(mc, buffer,
610
if (buffer_length > 0){
611
decrypted_buffer_size = pgp_packet_decrypt(buffer,
686
612
buffer_length,
687
&decrypted_buffer);
688
if(decrypted_buffer_size >= 0){
613
&decrypted_buffer,
614
keydir);
615
if (decrypted_buffer_size >= 0){
689
616
written = 0;
690
617
while(written < (size_t) decrypted_buffer_size){
691
ret = (int)fwrite(decrypted_buffer + written, 1,
692
(size_t)decrypted_buffer_size - written,
693
stdout);
618
ret = (int)fwrite (decrypted_buffer + written, 1,
619
(size_t)decrypted_buffer_size - written,
620
stdout);
694
621
if(ret == 0 and ferror(stdout)){
695
622
if(debug){
696
623
fprintf(stderr, "Error writing encrypted data: %s\n",
705
632
} else {
706
633
retval = -1;
707
634
}
708
} else {
709
retval = -1;
710
635
}
711
636
712
637
/* Shutdown procedure */
713
638
714
639
mandos_end:
715
640
free(buffer);
716
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
717
if(ret == -1){
718
perror("close");
719
}
720
gnutls_deinit(session);
641
close(tcp_sd);
642
gnutls_deinit (session);
721
643
return retval;
722
644
}
723
645
736
658
flags,
737
659
void* userdata) {
738
660
mandos_context *mc = userdata;
739
assert(r);
661
assert(r); /* Spurious warning */
740
662
741
663
/* Called whenever a service has been resolved successfully or
742
664
timed out */
743
665
744
switch(event) {
666
switch (event) {
745
667
default:
746
668
case AVAHI_RESOLVER_FAILURE:
747
669
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
754
676
char ip[AVAHI_ADDRESS_STR_MAX];
755
677
avahi_address_snprint(ip, sizeof(ip), address);
756
678
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);
679
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
680
" port %d\n", name, host_name, ip, interface, port);
760
681
}
761
682
int ret = start_mandos_communication(ip, port, interface, mc);
762
if(ret == 0){
763
avahi_simple_poll_quit(mc->simple_poll);
683
if (ret == 0){
684
exit(EXIT_SUCCESS);
764
685
}
765
686
}
766
687
}
778
699
flags,
779
700
void* userdata) {
780
701
mandos_context *mc = userdata;
781
assert(b);
702
assert(b); /* Spurious warning */
782
703
783
704
/* Called whenever a new services becomes available on the LAN or
784
705
is removed from the LAN */
785
706
786
switch(event) {
707
switch (event) {
787
708
default:
788
709
case AVAHI_BROWSER_FAILURE:
789
710
798
719
the callback function is called the Avahi server will free the
799
720
resolver for us. */
800
721
801
if(!(avahi_s_service_resolver_new(mc->server, interface,
722
if (!(avahi_s_service_resolver_new(mc->server, interface,
802
723
protocol, name, type, domain,
803
724
AVAHI_PROTO_INET6, 0,
804
725
resolve_callback, mc)))
818
739
}
819
740
}
820
741
742
/* Combines file name and path and returns the malloced new
743
string. some sane checks could/should be added */
744
static const char *combinepath(const char *first, const char *second){
745
size_t f_len = strlen(first);
746
size_t s_len = strlen(second);
747
char *tmp = malloc(f_len + s_len + 2);
748
if (tmp == NULL){
749
return NULL;
750
}
751
if(f_len > 0){
752
memcpy(tmp, first, f_len); /* Spurious warning */
753
}
754
tmp[f_len] = '/';
755
if(s_len > 0){
756
memcpy(tmp + f_len + 1, second, s_len); /* Spurious warning */
757
}
758
tmp[f_len + 1 + s_len] = '\0';
759
return tmp;
760
}
761
762
821
763
int main(int argc, char *argv[]){
822
764
AvahiSServiceBrowser *sb = NULL;
823
765
int error;
824
766
int ret;
825
intmax_t tmpmax;
826
int numchars;
827
767
int exitcode = EXIT_SUCCESS;
828
768
const char *interface = "eth0";
829
769
struct ifreq network;
831
771
uid_t uid;
832
772
gid_t gid;
833
773
char *connect_to = NULL;
834
char tempdir[] = "/tmp/mandosXXXXXX";
835
bool tempdir_created = false;
836
774
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
837
const char *seckey = PATHDIR "/" SECKEY;
838
const char *pubkey = PATHDIR "/" PUBKEY;
839
775
const char *pubkeyfile = "pubkey.txt";
776
const char *seckeyfile = "seckey.txt";
840
777
mandos_context mc = { .simple_poll = NULL, .server = NULL,
841
.dh_bits = 1024, .priority = "SECURE256"
842
":!CTYPE-X.509:+CTYPE-OPENPGP" };
843
bool gnutls_initialized = false;
844
bool gpgme_initialized = false;
778
.dh_bits = 1024, .priority = "SECURE256"};
779
bool gnutls_initalized = false;
845
780
846
781
{
847
782
struct argp_option options[] = {
848
783
{ .name = "debug", .key = 128,
849
784
.doc = "Debug mode", .group = 3 },
850
785
{ .name = "connect", .key = 'c',
851
.arg = "ADDRESS:PORT",
852
.doc = "Connect directly to a specific Mandos server",
786
.arg = "IP",
787
.doc = "Connect directly to a sepcified mandos server",
853
788
.group = 1 },
854
789
{ .name = "interface", .key = 'i',
855
.arg = "NAME",
856
.doc = "Interface that will be used to search for Mandos"
857
" servers",
790
.arg = "INTERFACE",
791
.doc = "Interface that Avahi will conntect through",
792
.group = 1 },
793
{ .name = "keydir", .key = 'd',
794
.arg = "KEYDIR",
795
.doc = "Directory where the openpgp keyring is",
858
796
.group = 1 },
859
797
{ .name = "seckey", .key = 's',
860
.arg = "FILE",
861
.doc = "OpenPGP secret key file base name",
798
.arg = "SECKEY",
799
.doc = "Secret openpgp key for gnutls authentication",
862
800
.group = 1 },
863
801
{ .name = "pubkey", .key = 'p',
864
.arg = "FILE",
865
.doc = "OpenPGP public key file base name",
802
.arg = "PUBKEY",
803
.doc = "Public openpgp key for gnutls authentication",
866
804
.group = 2 },
867
805
{ .name = "dh-bits", .key = 129,
868
806
.arg = "BITS",
869
.doc = "Bit length of the prime number used in the"
870
" Diffie-Hellman key exchange",
807
.doc = "dh-bits to use in gnutls communication",
871
808
.group = 2 },
872
809
{ .name = "priority", .key = 130,
873
.arg = "STRING",
874
.doc = "GnuTLS priority string for the TLS handshake",
875
.group = 1 },
810
.arg = "PRIORITY",
811
.doc = "GNUTLS priority", .group = 1 },
876
812
{ .name = NULL }
877
813
};
814
878
815
879
error_t parse_opt(int key, char *arg,
880
struct argp_state *state) {
881
switch(key) {
882
case 128: /* --debug */
816
error_t parse_opt (int key, char *arg,
817
struct argp_state *state) {
818
/* Get the INPUT argument from `argp_parse', which we know is
819
a pointer to our plugin list pointer. */
820
switch (key) {
821
case 128:
883
822
debug = true;
884
823
break;
885
case 'c': /* --connect */
824
case 'c':
886
825
connect_to = arg;
887
826
break;
888
case 'i': /* --interface */
827
case 'i':
889
828
interface = arg;
890
829
break;
891
case 's': /* --seckey */
892
seckey = arg;
893
break;
894
case 'p': /* --pubkey */
895
pubkey = arg;
896
break;
897
case 129: /* --dh-bits */
898
ret = sscanf(arg, "%" SCNdMAX "%n", &tmpmax, &numchars);
899
if(ret < 1 or tmpmax != (typeof(mc.dh_bits))tmpmax
900
or arg[numchars] != '\0'){
901
fprintf(stderr, "Bad number of DH bits\n");
830
case 'd':
831
keydir = arg;
832
break;
833
case 's':
834
seckeyfile = arg;
835
break;
836
case 'p':
837
pubkeyfile = arg;
838
break;
839
case 129:
840
errno = 0;
841
mc.dh_bits = (unsigned int) strtol(arg, NULL, 10);
842
if (errno){
843
perror("strtol");
902
844
exit(EXIT_FAILURE);
903
845
}
904
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
905
846
break;
906
case 130: /* --priority */
847
case 130:
907
848
mc.priority = arg;
908
849
break;
909
850
case ARGP_KEY_ARG:
910
argp_usage(state);
911
case ARGP_KEY_END:
851
argp_usage (state);
912
852
break;
853
case ARGP_KEY_END:
854
break;
913
855
default:
914
856
return ARGP_ERR_UNKNOWN;
915
857
}
916
858
return 0;
917
859
}
918
860
919
861
struct argp argp = { .options = options, .parser = parse_opt,
920
862
.args_doc = "",
921
863
.doc = "Mandos client -- Get and decrypt"
922
" passwords from a Mandos server" };
923
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
924
if(ret == ARGP_ERR_UNKNOWN){
925
fprintf(stderr, "Unknown error while parsing arguments\n");
926
exitcode = EXIT_FAILURE;
927
goto end;
928
}
929
}
930
931
/* If the interface is down, bring it up */
932
{
933
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
934
if(sd < 0) {
935
perror("socket");
936
exitcode = EXIT_FAILURE;
937
goto end;
938
}
939
strcpy(network.ifr_name, interface);
940
ret = ioctl(sd, SIOCGIFFLAGS, &network);
941
if(ret == -1){
942
perror("ioctl SIOCGIFFLAGS");
943
exitcode = EXIT_FAILURE;
944
goto end;
945
}
946
if((network.ifr_flags & IFF_UP) == 0){
947
network.ifr_flags |= IFF_UP;
948
ret = ioctl(sd, SIOCSIFFLAGS, &network);
949
if(ret == -1){
950
perror("ioctl SIOCSIFFLAGS");
951
exitcode = EXIT_FAILURE;
952
goto end;
953
}
954
}
955
ret = (int)TEMP_FAILURE_RETRY(close(sd));
956
if(ret == -1){
957
perror("close");
958
}
959
}
960
864
" passwords from mandos server" };
865
ret = argp_parse (&argp, argc, argv, 0, 0, NULL);
866
if (ret == ARGP_ERR_UNKNOWN){
867
fprintf(stderr, "Unkown error while parsing arguments\n");
868
exitcode = EXIT_FAILURE;
869
goto end;
870
}
871
}
872
873
pubkeyfile = combinepath(keydir, pubkeyfile);
874
if (pubkeyfile == NULL){
875
perror("combinepath");
876
exitcode = EXIT_FAILURE;
877
goto end;
878
}
879
880
seckeyfile = combinepath(keydir, seckeyfile);
881
if (seckeyfile == NULL){
882
perror("combinepath");
883
goto end;
884
}
885
886
ret = init_gnutls_global(&mc, pubkeyfile, seckeyfile);
887
if (ret == -1){
888
fprintf(stderr, "init_gnutls_global\n");
889
goto end;
890
} else {
891
gnutls_initalized = true;
892
}
893
961
894
uid = getuid();
962
895
gid = getgid();
963
896
964
897
ret = setuid(uid);
965
if(ret == -1){
898
if (ret == -1){
966
899
perror("setuid");
967
900
}
968
901
969
902
setgid(gid);
970
if(ret == -1){
903
if (ret == -1){
971
904
perror("setgid");
972
905
}
973
906
974
ret = init_gnutls_global(&mc, pubkey, seckey);
975
if(ret == -1){
976
fprintf(stderr, "init_gnutls_global failed\n");
977
exitcode = EXIT_FAILURE;
978
goto end;
979
} else {
980
gnutls_initialized = true;
981
}
982
983
if(mkdtemp(tempdir) == NULL){
984
perror("mkdtemp");
985
goto end;
986
}
987
tempdir_created = true;
988
989
if(not init_gpgme(&mc, pubkey, seckey, tempdir)){
990
fprintf(stderr, "init_gpgme failed\n");
991
exitcode = EXIT_FAILURE;
992
goto end;
993
} else {
994
gpgme_initialized = true;
995
}
996
997
907
if_index = (AvahiIfIndex) if_nametoindex(interface);
998
908
if(if_index == 0){
999
909
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1000
exitcode = EXIT_FAILURE;
1001
goto end;
910
exit(EXIT_FAILURE);
1002
911
}
1003
912
1004
913
if(connect_to != NULL){
1010
919
exitcode = EXIT_FAILURE;
1011
920
goto end;
1012
921
}
1013
uint16_t port;
1014
ret = sscanf(address+1, "%" SCNdMAX "%n", &tmpmax, &numchars);
1015
if(ret < 1 or tmpmax != (uint16_t)tmpmax
1016
or address[numchars+1] != '\0'){
1017
fprintf(stderr, "Bad port number\n");
922
errno = 0;
923
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
924
if(errno){
925
perror("Bad port number");
1018
926
exitcode = EXIT_FAILURE;
1019
927
goto end;
1020
928
}
1021
port = (uint16_t)tmpmax;
1022
929
*address = '\0';
1023
930
address = connect_to;
1024
931
ret = start_mandos_communication(address, port, if_index, &mc);
1030
937
goto end;
1031
938
}
1032
939
1033
if(not debug){
940
/* If the interface is down, bring it up */
941
{
942
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
943
if(sd < 0) {
944
perror("socket");
945
exitcode = EXIT_FAILURE;
946
goto end;
947
}
948
strcpy(network.ifr_name, interface); /* Spurious warning */
949
ret = ioctl(sd, SIOCGIFFLAGS, &network);
950
if(ret == -1){
951
perror("ioctl SIOCGIFFLAGS");
952
exitcode = EXIT_FAILURE;
953
goto end;
954
}
955
if((network.ifr_flags & IFF_UP) == 0){
956
network.ifr_flags |= IFF_UP;
957
ret = ioctl(sd, SIOCSIFFLAGS, &network);
958
if(ret == -1){
959
perror("ioctl SIOCSIFFLAGS");
960
exitcode = EXIT_FAILURE;
961
goto end;
962
}
963
}
964
close(sd);
965
}
966
967
if (not debug){
1034
968
avahi_set_log_function(empty_log);
1035
969
}
1036
970
1039
973
1040
974
/* Allocate main Avahi loop object */
1041
975
mc.simple_poll = avahi_simple_poll_new();
1042
if(mc.simple_poll == NULL) {
976
if (mc.simple_poll == NULL) {
1043
977
fprintf(stderr, "Avahi: Failed to create simple poll"
1044
978
" object.\n");
1045
979
exitcode = EXIT_FAILURE;
1046
980
goto end;
1047
981
}
1048
982
1049
983
{
1050
984
AvahiServerConfig config;
1051
985
/* Do not publish any local Zeroconf records */
1054
988
config.publish_addresses = 0;
1055
989
config.publish_workstation = 0;
1056
990
config.publish_domain = 0;
1057
991
1058
992
/* Allocate a new server */
1059
993
mc.server = avahi_server_new(avahi_simple_poll_get
1060
994
(mc.simple_poll), &config, NULL,
1061
995
NULL, &error);
1062
996
1063
997
/* Free the Avahi configuration data */
1064
998
avahi_server_config_free(&config);
1065
999
}
1066
1000
1067
1001
/* Check if creating the Avahi server object succeeded */
1068
if(mc.server == NULL) {
1002
if (mc.server == NULL) {
1069
1003
fprintf(stderr, "Failed to create Avahi server: %s\n",
1070
1004
avahi_strerror(error));
1071
1005
exitcode = EXIT_FAILURE;
1077
1011
AVAHI_PROTO_INET6,
1078
1012
"_mandos._tcp", NULL, 0,
1079
1013
browse_callback, &mc);
1080
if(sb == NULL) {
1014
if (sb == NULL) {
1081
1015
fprintf(stderr, "Failed to create service browser: %s\n",
1082
1016
avahi_strerror(avahi_server_errno(mc.server)));
1083
1017
exitcode = EXIT_FAILURE;
1085
1019
}
1086
1020
1087
1021
/* Run the main loop */
1088
1089
if(debug){
1022
1023
if (debug){
1090
1024
fprintf(stderr, "Starting Avahi loop search\n");
1091
1025
}
1092
1026
1093
1027
avahi_simple_poll_loop(mc.simple_poll);
1094
1028
1095
1029
end:
1096
1097
if(debug){
1030
1031
if (debug){
1098
1032
fprintf(stderr, "%s exiting\n", argv[0]);
1099
1033
}
1100
1034
1101
1035
/* Cleanup things */
1102
if(sb != NULL)
1036
if (sb != NULL)
1103
1037
avahi_s_service_browser_free(sb);
1104
1038
1105
if(mc.server != NULL)
1039
if (mc.server != NULL)
1106
1040
avahi_server_free(mc.server);
1107
1108
if(mc.simple_poll != NULL)
1041
1042
if (mc.simple_poll != NULL)
1109
1043
avahi_simple_poll_free(mc.simple_poll);
1110
1111
if(gnutls_initialized){
1044
free(pubkeyfile);
1045
free(seckeyfile);
1046
1047
if (gnutls_initalized){
1112
1048
gnutls_certificate_free_credentials(mc.cred);
1113
gnutls_global_deinit();
1114
gnutls_dh_params_deinit(mc.dh_params);
1115
}
1116
1117
if(gpgme_initialized){
1118
gpgme_release(mc.ctx);
1119
}
1120
1121
/* Removes the temp directory used by GPGME */
1122
if(tempdir_created){
1123
DIR *d;
1124
struct dirent *direntry;
1125
d = opendir(tempdir);
1126
if(d == NULL){
1127
if(errno != ENOENT){
1128
perror("opendir");
1129
}
1130
} else {
1131
while(true){
1132
direntry = readdir(d);
1133
if(direntry == NULL){
1134
break;
1135
}
1136
/* Skip "." and ".." */
1137
if(direntry->d_name[0] == '.'
1138
and (direntry->d_name[1] == '\0'
1139
or (direntry->d_name[1] == '.'
1140
and direntry->d_name[2] == '\0'))){
1141
continue;
1142
}
1143
char *fullname = NULL;
1144
ret = asprintf(&fullname, "%s/%s", tempdir,
1145
direntry->d_name);
1146
if(ret < 0){
1147
perror("asprintf");
1148
continue;
1149
}
1150
ret = remove(fullname);
1151
if(ret == -1){
1152
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1153
strerror(errno));
1154
}
1155
free(fullname);
1156
}
1157
closedir(d);
1158
}
1159
ret = rmdir(tempdir);
1160
if(ret == -1 and errno != ENOENT){
1161
perror("rmdir");
1162
}
1049
gnutls_global_deinit ();
1163
1050
}
1164
1051
1165
1052
return exitcode;
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0