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- Committer: Teddy Hogeborn
- Date: 2009-10-18 16:09:05 UTC
- Revision ID: teddy@fukt.bsnet.se-20091018160905-ep07o5cwedsegz9x
* plugins.d/askpass-fifo.c: Do close(STDOUT_FILENO) before exiting to
check its return code. Use exit codes
from <sysexits.h>.
* plugins.d/splashy.c: Use exit codes from <sysexits.h> in the fork to
exec the "splashy_update" command.
check its return code. Use exit codes
from <sysexits.h>.
* plugins.d/splashy.c: Use exit codes from <sysexits.h> in the fork to
exec the "splashy_update" command.
- 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
29
30
*/
30
31
31
32
/* Needed by GPGME, specifically gpgme_data_seek() */
33
#ifndef _LARGEFILE_SOURCE
32
34
#define _LARGEFILE_SOURCE
35
#endif
36
#ifndef _FILE_OFFSET_BITS
33
37
#define _FILE_OFFSET_BITS 64
34
35
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY() */
36
37
#include <stdio.h> /* fprintf(), stderr, fwrite(), stdout,
38
ferror() */
38
#endif
39
40
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
41
42
#include <stdio.h> /* fprintf(), stderr, fwrite(),
43
stdout, ferror(), remove() */
39
44
#include <stdint.h> /* uint16_t, uint32_t */
40
45
#include <stddef.h> /* NULL, size_t, ssize_t */
41
46
#include <stdlib.h> /* free(), EXIT_SUCCESS, EXIT_FAILURE,
42
srand() */
43
#include <stdbool.h> /* bool, true */
47
srand(), strtof(), abort() */
48
#include <stdbool.h> /* bool, false, true */
44
49
#include <string.h> /* memset(), strcmp(), strlen(),
45
strerror(), memcpy(), strcpy() */
46
#include <sys/ioctl.h> /* ioctl */
47
#include <net/if.h> /* ifreq, SIOCGIFFLAGS, SIOCSIFFLAGS,
48
IFF_UP */
50
strerror(), asprintf(), strcpy() */
51
#include <sys/ioctl.h> /* ioctl */
49
52
#include <sys/types.h> /* socket(), inet_pton(), sockaddr,
50
53
sockaddr_in6, PF_INET6,
51
SOCK_STREAM, INET6_ADDRSTRLEN,
52
uid_t, gid_t */
54
SOCK_STREAM, uid_t, gid_t, open(),
55
opendir(), DIR */
56
#include <sys/stat.h> /* open() */
53
57
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
54
struct in6_addr, inet_pton(),
55
connect() */
58
inet_pton(), connect() */
59
#include <fcntl.h> /* open() */
60
#include <dirent.h> /* opendir(), struct dirent, readdir()
61
*/
62
#include <inttypes.h> /* PRIu16, PRIdMAX, intmax_t,
63
strtoimax() */
56
64
#include <assert.h> /* assert() */
57
65
#include <errno.h> /* perror(), errno */
58
#include <time.h> /* time() */
66
#include <time.h> /* nanosleep(), time() */
59
67
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
60
68
SIOCSIFFLAGS, if_indextoname(),
61
69
if_nametoindex(), IF_NAMESIZE */
70
#include <netinet/in.h> /* IN6_IS_ADDR_LINKLOCAL,
71
INET_ADDRSTRLEN, INET6_ADDRSTRLEN
72
*/
62
73
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
63
getuid(), getgid(), setuid(),
64
setgid() */
65
#include <netinet/in.h>
74
getuid(), getgid(), seteuid(),
75
setgid(), pause() */
66
76
#include <arpa/inet.h> /* inet_pton(), htons */
67
#include <iso646.h> /* not, and */
77
#include <iso646.h> /* not, or, and */
68
78
#include <argp.h> /* struct argp_option, error_t, struct
69
79
argp_state, struct argp,
70
80
argp_parse(), ARGP_KEY_ARG,
71
81
ARGP_KEY_END, ARGP_ERR_UNKNOWN */
82
#include <signal.h> /* sigemptyset(), sigaddset(),
83
sigaction(), SIGTERM, sig_atomic_t,
84
raise() */
85
86
#ifdef __linux__
87
#include <sys/klog.h> /* klogctl() */
88
#endif /* __linux__ */
72
89
73
90
/* Avahi */
74
91
/* All Avahi types, constants and functions
82
99
#include <avahi-common/error.h>
83
100
84
101
/* GnuTLS */
85
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and functions
102
#include <gnutls/gnutls.h> /* All GnuTLS types, constants and
103
functions:
86
104
gnutls_*
87
105
init_gnutls_session(),
88
106
GNUTLS_* */
89
#include <gnutls/openpgp.h> /* gnutls_certificate_set_openpgp_key_file(),
107
#include <gnutls/openpgp.h>
108
/* gnutls_certificate_set_openpgp_key_file(),
90
109
GNUTLS_OPENPGP_FMT_BASE64 */
91
110
92
111
/* GPGME */
93
#include <gpgme.h> /* All GPGME types, constants and functions
112
#include <gpgme.h> /* All GPGME types, constants and
113
functions:
94
114
gpgme_*
95
115
GPGME_PROTOCOL_OpenPGP,
96
116
GPG_ERR_NO_* */
97
117
98
118
#define BUFFER_SIZE 256
99
119
120
#define PATHDIR "/conf/conf.d/mandos"
121
#define SECKEY "seckey.txt"
122
#define PUBKEY "pubkey.txt"
123
100
124
bool debug = false;
101
static const char *keydir = "/conf/conf.d/mandos";
102
125
static const char mandos_protocol_version[] = "1";
103
const char *argp_program_version = "mandosclient 0.9";
126
const char *argp_program_version = "mandos-client " VERSION;
104
127
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
105
128
106
129
/* Used for passing in values through the Avahi callback functions */
111
134
unsigned int dh_bits;
112
135
gnutls_dh_params_t dh_params;
113
136
const char *priority;
137
gpgme_ctx_t ctx;
114
138
} mandos_context;
115
139
140
/* global context so signal handler can reach it*/
141
mandos_context mc = { .simple_poll = NULL, .server = NULL,
142
.dh_bits = 1024, .priority = "SECURE256"
143
":!CTYPE-X.509:+CTYPE-OPENPGP" };
144
145
sig_atomic_t quit_now = 0;
146
int signal_received = 0;
147
116
148
/*
117
* Make room in "buffer" for at least BUFFER_SIZE additional bytes.
118
* "buffer_capacity" is how much is currently allocated,
149
* Make additional room in "buffer" for at least BUFFER_SIZE more
150
* bytes. "buffer_capacity" is how much is currently allocated,
119
151
* "buffer_length" is how much is already used.
120
152
*/
121
size_t adjustbuffer(char **buffer, size_t buffer_length,
153
size_t incbuffer(char **buffer, size_t buffer_length,
122
154
size_t buffer_capacity){
123
if (buffer_length + BUFFER_SIZE > buffer_capacity){
155
if(buffer_length + BUFFER_SIZE > buffer_capacity){
124
156
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
125
if (buffer == NULL){
157
if(buffer == NULL){
126
158
return 0;
127
159
}
128
160
buffer_capacity += BUFFER_SIZE;
131
163
}
132
164
133
165
/*
134
* Decrypt OpenPGP data using keyrings in HOMEDIR.
135
* Returns -1 on error
166
* Initialize GPGME.
136
167
*/
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;
168
static bool init_gpgme(const char *seckey,
169
const char *pubkey, const char *tempdir){
143
170
gpgme_error_t rc;
144
ssize_t ret;
145
size_t plaintext_capacity = 0;
146
ssize_t plaintext_length = 0;
147
171
gpgme_engine_info_t engine_info;
148
172
149
if (debug){
150
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
173
174
/*
175
* Helper function to insert pub and seckey to the engine keyring.
176
*/
177
bool import_key(const char *filename){
178
int ret;
179
int fd;
180
gpgme_data_t pgp_data;
181
182
fd = (int)TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
183
if(fd == -1){
184
perror("open");
185
return false;
186
}
187
188
rc = gpgme_data_new_from_fd(&pgp_data, fd);
189
if(rc != GPG_ERR_NO_ERROR){
190
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
191
gpgme_strsource(rc), gpgme_strerror(rc));
192
return false;
193
}
194
195
rc = gpgme_op_import(mc.ctx, pgp_data);
196
if(rc != GPG_ERR_NO_ERROR){
197
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
198
gpgme_strsource(rc), gpgme_strerror(rc));
199
return false;
200
}
201
202
ret = (int)TEMP_FAILURE_RETRY(close(fd));
203
if(ret == -1){
204
perror("close");
205
}
206
gpgme_data_release(pgp_data);
207
return true;
208
}
209
210
if(debug){
211
fprintf(stderr, "Initializing GPGME\n");
151
212
}
152
213
153
214
/* Init GPGME */
154
215
gpgme_check_version(NULL);
155
216
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
156
if (rc != GPG_ERR_NO_ERROR){
217
if(rc != GPG_ERR_NO_ERROR){
157
218
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
158
219
gpgme_strsource(rc), gpgme_strerror(rc));
159
return -1;
220
return false;
160
221
}
161
222
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){
223
/* Set GPGME home directory for the OpenPGP engine only */
224
rc = gpgme_get_engine_info(&engine_info);
225
if(rc != GPG_ERR_NO_ERROR){
165
226
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
166
227
gpgme_strsource(rc), gpgme_strerror(rc));
167
return -1;
228
return false;
168
229
}
169
230
while(engine_info != NULL){
170
231
if(engine_info->protocol == GPGME_PROTOCOL_OpenPGP){
171
232
gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP,
172
engine_info->file_name, homedir);
233
engine_info->file_name, tempdir);
173
234
break;
174
235
}
175
236
engine_info = engine_info->next;
176
237
}
177
238
if(engine_info == NULL){
178
fprintf(stderr, "Could not set GPGME home dir to %s\n", homedir);
179
return -1;
239
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
240
return false;
241
}
242
243
/* Create new GPGME "context" */
244
rc = gpgme_new(&(mc.ctx));
245
if(rc != GPG_ERR_NO_ERROR){
246
fprintf(stderr, "bad gpgme_new: %s: %s\n",
247
gpgme_strsource(rc), gpgme_strerror(rc));
248
return false;
249
}
250
251
if(not import_key(pubkey) or not import_key(seckey)){
252
return false;
253
}
254
255
return true;
256
}
257
258
/*
259
* Decrypt OpenPGP data.
260
* Returns -1 on error
261
*/
262
static ssize_t pgp_packet_decrypt(const char *cryptotext,
263
size_t crypto_size,
264
char **plaintext){
265
gpgme_data_t dh_crypto, dh_plain;
266
gpgme_error_t rc;
267
ssize_t ret;
268
size_t plaintext_capacity = 0;
269
ssize_t plaintext_length = 0;
270
271
if(debug){
272
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
180
273
}
181
274
182
275
/* Create new GPGME data buffer from memory cryptotext */
183
276
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
184
277
0);
185
if (rc != GPG_ERR_NO_ERROR){
278
if(rc != GPG_ERR_NO_ERROR){
186
279
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
187
280
gpgme_strsource(rc), gpgme_strerror(rc));
188
281
return -1;
190
283
191
284
/* Create new empty GPGME data buffer for the plaintext */
192
285
rc = gpgme_data_new(&dh_plain);
193
if (rc != GPG_ERR_NO_ERROR){
286
if(rc != GPG_ERR_NO_ERROR){
194
287
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
195
288
gpgme_strsource(rc), gpgme_strerror(rc));
196
289
gpgme_data_release(dh_crypto);
197
290
return -1;
198
291
}
199
292
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
209
293
/* Decrypt data from the cryptotext data buffer to the plaintext
210
294
data buffer */
211
rc = gpgme_op_decrypt(ctx, dh_crypto, dh_plain);
212
if (rc != GPG_ERR_NO_ERROR){
295
rc = gpgme_op_decrypt(mc.ctx, dh_crypto, dh_plain);
296
if(rc != GPG_ERR_NO_ERROR){
213
297
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
214
298
gpgme_strsource(rc), gpgme_strerror(rc));
215
299
plaintext_length = -1;
216
goto decrypt_end;
217
}
218
219
if(debug){
220
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
221
}
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){
300
if(debug){
301
gpgme_decrypt_result_t result;
302
result = gpgme_op_decrypt_result(mc.ctx);
303
if(result == NULL){
304
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
305
} else {
306
fprintf(stderr, "Unsupported algorithm: %s\n",
307
result->unsupported_algorithm);
308
fprintf(stderr, "Wrong key usage: %u\n",
309
result->wrong_key_usage);
310
if(result->file_name != NULL){
311
fprintf(stderr, "File name: %s\n", result->file_name);
312
}
313
gpgme_recipient_t recipient;
314
recipient = result->recipients;
239
315
while(recipient != NULL){
240
316
fprintf(stderr, "Public key algorithm: %s\n",
241
317
gpgme_pubkey_algo_name(recipient->pubkey_algo));
247
323
}
248
324
}
249
325
}
326
goto decrypt_end;
327
}
328
329
if(debug){
330
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
250
331
}
251
332
252
333
/* Seek back to the beginning of the GPGME plaintext data buffer */
253
if (gpgme_data_seek(dh_plain, (off_t) 0, SEEK_SET) == -1){
254
perror("pgpme_data_seek");
334
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
335
perror("gpgme_data_seek");
255
336
plaintext_length = -1;
256
337
goto decrypt_end;
257
338
}
258
339
259
340
*plaintext = NULL;
260
341
while(true){
261
plaintext_capacity = adjustbuffer(plaintext,
342
plaintext_capacity = incbuffer(plaintext,
262
343
(size_t)plaintext_length,
263
344
plaintext_capacity);
264
if (plaintext_capacity == 0){
265
perror("adjustbuffer");
345
if(plaintext_capacity == 0){
346
perror("incbuffer");
266
347
plaintext_length = -1;
267
348
goto decrypt_end;
268
349
}
270
351
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
271
352
BUFFER_SIZE);
272
353
/* Print the data, if any */
273
if (ret == 0){
354
if(ret == 0){
274
355
/* EOF */
275
356
break;
276
357
}
281
362
}
282
363
plaintext_length += ret;
283
364
}
284
365
285
366
if(debug){
286
367
fprintf(stderr, "Decrypted password is: ");
287
368
for(ssize_t i = 0; i < plaintext_length; i++){
300
381
return plaintext_length;
301
382
}
302
383
303
static const char * safer_gnutls_strerror (int value) {
304
const char *ret = gnutls_strerror (value);
305
if (ret == NULL)
384
static const char * safer_gnutls_strerror(int value){
385
const char *ret = gnutls_strerror(value); /* Spurious warning from
386
-Wunreachable-code */
387
if(ret == NULL)
306
388
ret = "(unknown)";
307
389
return ret;
308
390
}
313
395
fprintf(stderr, "GnuTLS: %s", string);
314
396
}
315
397
316
static int init_gnutls_global(mandos_context *mc,
317
const char *pubkeyfile,
318
const char *seckeyfile){
398
static int init_gnutls_global(const char *pubkeyfilename,
399
const char *seckeyfilename){
319
400
int ret;
320
401
321
402
if(debug){
323
404
}
324
405
325
406
ret = gnutls_global_init();
326
if (ret != GNUTLS_E_SUCCESS) {
327
fprintf (stderr, "GnuTLS global_init: %s\n",
328
safer_gnutls_strerror(ret));
407
if(ret != GNUTLS_E_SUCCESS){
408
fprintf(stderr, "GnuTLS global_init: %s\n",
409
safer_gnutls_strerror(ret));
329
410
return -1;
330
411
}
331
412
332
if (debug){
413
if(debug){
333
414
/* "Use a log level over 10 to enable all debugging options."
334
415
* - GnuTLS manual
335
416
*/
338
419
}
339
420
340
421
/* OpenPGP credentials */
341
gnutls_certificate_allocate_credentials(&mc->cred);
342
if (ret != GNUTLS_E_SUCCESS){
343
fprintf (stderr, "GnuTLS memory error: %s\n",
344
safer_gnutls_strerror(ret));
345
gnutls_global_deinit ();
422
gnutls_certificate_allocate_credentials(&mc.cred);
423
if(ret != GNUTLS_E_SUCCESS){
424
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
425
from
426
-Wunreachable-code
427
*/
428
safer_gnutls_strerror(ret));
429
gnutls_global_deinit();
346
430
return -1;
347
431
}
348
432
349
433
if(debug){
350
fprintf(stderr, "Attempting to use OpenPGP certificate %s"
351
" and keyfile %s as GnuTLS credentials\n", pubkeyfile,
352
seckeyfile);
434
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
435
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
436
seckeyfilename);
353
437
}
354
438
355
439
ret = gnutls_certificate_set_openpgp_key_file
356
(mc->cred, pubkeyfile, seckeyfile, GNUTLS_OPENPGP_FMT_BASE64);
357
if (ret != GNUTLS_E_SUCCESS) {
440
(mc.cred, pubkeyfilename, seckeyfilename,
441
GNUTLS_OPENPGP_FMT_BASE64);
442
if(ret != GNUTLS_E_SUCCESS){
358
443
fprintf(stderr,
359
444
"Error[%d] while reading the OpenPGP key pair ('%s',"
360
" '%s')\n", ret, pubkeyfile, seckeyfile);
361
fprintf(stdout, "The GnuTLS error is: %s\n",
445
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
446
fprintf(stderr, "The GnuTLS error is: %s\n",
362
447
safer_gnutls_strerror(ret));
363
448
goto globalfail;
364
449
}
365
450
366
451
/* GnuTLS server initialization */
367
ret = gnutls_dh_params_init(&mc->dh_params);
368
if (ret != GNUTLS_E_SUCCESS) {
369
fprintf (stderr, "Error in GnuTLS DH parameter initialization:"
370
" %s\n", safer_gnutls_strerror(ret));
371
goto globalfail;
372
}
373
ret = gnutls_dh_params_generate2(mc->dh_params, mc->dh_bits);
374
if (ret != GNUTLS_E_SUCCESS) {
375
fprintf (stderr, "Error in GnuTLS prime generation: %s\n",
376
safer_gnutls_strerror(ret));
377
goto globalfail;
378
}
379
380
gnutls_certificate_set_dh_params(mc->cred, mc->dh_params);
381
452
ret = gnutls_dh_params_init(&mc.dh_params);
453
if(ret != GNUTLS_E_SUCCESS){
454
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
455
" %s\n", safer_gnutls_strerror(ret));
456
goto globalfail;
457
}
458
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
459
if(ret != GNUTLS_E_SUCCESS){
460
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
461
safer_gnutls_strerror(ret));
462
goto globalfail;
463
}
464
465
gnutls_certificate_set_dh_params(mc.cred, mc.dh_params);
466
382
467
return 0;
383
468
384
469
globalfail:
385
386
gnutls_certificate_free_credentials(mc->cred);
470
471
gnutls_certificate_free_credentials(mc.cred);
387
472
gnutls_global_deinit();
473
gnutls_dh_params_deinit(mc.dh_params);
388
474
return -1;
389
390
475
}
391
476
392
static int init_gnutls_session(mandos_context *mc,
393
gnutls_session_t *session){
477
static int init_gnutls_session(gnutls_session_t *session){
394
478
int ret;
395
479
/* GnuTLS session creation */
396
ret = gnutls_init(session, GNUTLS_SERVER);
397
if (ret != GNUTLS_E_SUCCESS){
480
do {
481
ret = gnutls_init(session, GNUTLS_SERVER);
482
if(quit_now){
483
return -1;
484
}
485
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
486
if(ret != GNUTLS_E_SUCCESS){
398
487
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
399
488
safer_gnutls_strerror(ret));
400
489
}
401
490
402
491
{
403
492
const char *err;
404
ret = gnutls_priority_set_direct(*session, mc->priority, &err);
405
if (ret != GNUTLS_E_SUCCESS) {
493
do {
494
ret = gnutls_priority_set_direct(*session, mc.priority, &err);
495
if(quit_now){
496
gnutls_deinit(*session);
497
return -1;
498
}
499
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
500
if(ret != GNUTLS_E_SUCCESS){
406
501
fprintf(stderr, "Syntax error at: %s\n", err);
407
502
fprintf(stderr, "GnuTLS error: %s\n",
408
503
safer_gnutls_strerror(ret));
409
gnutls_deinit (*session);
504
gnutls_deinit(*session);
410
505
return -1;
411
506
}
412
507
}
413
508
414
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
415
mc->cred);
416
if (ret != GNUTLS_E_SUCCESS) {
509
do {
510
ret = gnutls_credentials_set(*session, GNUTLS_CRD_CERTIFICATE,
511
mc.cred);
512
if(quit_now){
513
gnutls_deinit(*session);
514
return -1;
515
}
516
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
517
if(ret != GNUTLS_E_SUCCESS){
417
518
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
418
519
safer_gnutls_strerror(ret));
419
gnutls_deinit (*session);
520
gnutls_deinit(*session);
420
521
return -1;
421
522
}
422
523
423
524
/* ignore client certificate if any. */
424
gnutls_certificate_server_set_request (*session,
425
GNUTLS_CERT_IGNORE);
525
gnutls_certificate_server_set_request(*session, GNUTLS_CERT_IGNORE);
426
526
427
gnutls_dh_set_prime_bits (*session, mc->dh_bits);
527
gnutls_dh_set_prime_bits(*session, mc.dh_bits);
428
528
429
529
return 0;
430
530
}
436
536
/* Called when a Mandos server is found */
437
537
static int start_mandos_communication(const char *ip, uint16_t port,
438
538
AvahiIfIndex if_index,
439
mandos_context *mc){
440
int ret, tcp_sd;
441
union { struct sockaddr in; struct sockaddr_in6 in6; } to;
539
int af){
540
int ret, tcp_sd = -1;
541
ssize_t sret;
542
union {
543
struct sockaddr_in in;
544
struct sockaddr_in6 in6;
545
} to;
442
546
char *buffer = NULL;
443
char *decrypted_buffer;
547
char *decrypted_buffer = NULL;
444
548
size_t buffer_length = 0;
445
549
size_t buffer_capacity = 0;
446
ssize_t decrypted_buffer_size;
447
550
size_t written;
448
int retval = 0;
449
char interface[IF_NAMESIZE];
551
int retval = -1;
450
552
gnutls_session_t session;
451
452
ret = init_gnutls_session (mc, &session);
453
if (ret != 0){
553
int pf; /* Protocol family */
554
555
if(quit_now){
556
return -1;
557
}
558
559
switch(af){
560
case AF_INET6:
561
pf = PF_INET6;
562
break;
563
case AF_INET:
564
pf = PF_INET;
565
break;
566
default:
567
fprintf(stderr, "Bad address family: %d\n", af);
568
return -1;
569
}
570
571
ret = init_gnutls_session(&session);
572
if(ret != 0){
454
573
return -1;
455
574
}
456
575
457
576
if(debug){
458
fprintf(stderr, "Setting up a tcp connection to %s, port %d\n",
459
ip, port);
577
fprintf(stderr, "Setting up a TCP connection to %s, port %" PRIu16
578
"\n", ip, port);
460
579
}
461
580
462
tcp_sd = socket(PF_INET6, SOCK_STREAM, 0);
463
if(tcp_sd < 0) {
581
tcp_sd = socket(pf, SOCK_STREAM, 0);
582
if(tcp_sd < 0){
464
583
perror("socket");
465
return -1;
466
}
467
468
if(debug){
469
if(if_indextoname((unsigned int)if_index, interface) == NULL){
470
perror("if_indextoname");
471
return -1;
472
}
473
fprintf(stderr, "Binding to interface %s\n", interface);
474
}
475
476
memset(&to,0,sizeof(to)); /* Spurious warning */
477
to.in6.sin6_family = AF_INET6;
478
/* It would be nice to have a way to detect if we were passed an
479
IPv4 address here. Now we assume an IPv6 address. */
480
ret = inet_pton(AF_INET6, ip, &to.in6.sin6_addr);
481
if (ret < 0 ){
584
goto mandos_end;
585
}
586
587
if(quit_now){
588
goto mandos_end;
589
}
590
591
memset(&to, 0, sizeof(to));
592
if(af == AF_INET6){
593
to.in6.sin6_family = (sa_family_t)af;
594
ret = inet_pton(af, ip, &to.in6.sin6_addr);
595
} else { /* IPv4 */
596
to.in.sin_family = (sa_family_t)af;
597
ret = inet_pton(af, ip, &to.in.sin_addr);
598
}
599
if(ret < 0 ){
482
600
perror("inet_pton");
483
return -1;
601
goto mandos_end;
484
602
}
485
603
if(ret == 0){
486
604
fprintf(stderr, "Bad address: %s\n", ip);
487
return -1;
488
}
489
to.in6.sin6_port = htons(port); /* Spurious warning */
605
goto mandos_end;
606
}
607
if(af == AF_INET6){
608
to.in6.sin6_port = htons(port); /* Spurious warnings from
609
-Wconversion and
610
-Wunreachable-code */
611
612
if(IN6_IS_ADDR_LINKLOCAL /* Spurious warnings from */
613
(&to.in6.sin6_addr)){ /* -Wstrict-aliasing=2 or lower and
614
-Wunreachable-code*/
615
if(if_index == AVAHI_IF_UNSPEC){
616
fprintf(stderr, "An IPv6 link-local address is incomplete"
617
" without a network interface\n");
618
goto mandos_end;
619
}
620
/* Set the network interface number as scope */
621
to.in6.sin6_scope_id = (uint32_t)if_index;
622
}
623
} else {
624
to.in.sin_port = htons(port); /* Spurious warnings from
625
-Wconversion and
626
-Wunreachable-code */
627
}
490
628
491
to.in6.sin6_scope_id = (uint32_t)if_index;
629
if(quit_now){
630
goto mandos_end;
631
}
492
632
493
633
if(debug){
494
fprintf(stderr, "Connection to: %s, port %d\n", ip, port);
495
char addrstr[INET6_ADDRSTRLEN] = "";
496
if(inet_ntop(to.in6.sin6_family, &(to.in6.sin6_addr), addrstr,
497
sizeof(addrstr)) == NULL){
634
if(af == AF_INET6 and if_index != AVAHI_IF_UNSPEC){
635
char interface[IF_NAMESIZE];
636
if(if_indextoname((unsigned int)if_index, interface) == NULL){
637
perror("if_indextoname");
638
} else {
639
fprintf(stderr, "Connection to: %s%%%s, port %" PRIu16 "\n",
640
ip, interface, port);
641
}
642
} else {
643
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
644
port);
645
}
646
char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
647
INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
648
const char *pcret;
649
if(af == AF_INET6){
650
pcret = inet_ntop(af, &(to.in6.sin6_addr), addrstr,
651
sizeof(addrstr));
652
} else {
653
pcret = inet_ntop(af, &(to.in.sin_addr), addrstr,
654
sizeof(addrstr));
655
}
656
if(pcret == NULL){
498
657
perror("inet_ntop");
499
658
} else {
500
659
if(strcmp(addrstr, ip) != 0){
503
662
}
504
663
}
505
664
506
ret = connect(tcp_sd, &to.in, sizeof(to));
507
if (ret < 0){
665
if(quit_now){
666
goto mandos_end;
667
}
668
669
if(af == AF_INET6){
670
ret = connect(tcp_sd, &to.in6, sizeof(to));
671
} else {
672
ret = connect(tcp_sd, &to.in, sizeof(to)); /* IPv4 */
673
}
674
if(ret < 0){
508
675
perror("connect");
509
return -1;
510
}
511
676
goto mandos_end;
677
}
678
679
if(quit_now){
680
goto mandos_end;
681
}
682
512
683
const char *out = mandos_protocol_version;
513
684
written = 0;
514
while (true){
685
while(true){
515
686
size_t out_size = strlen(out);
516
ret = TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
687
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
517
688
out_size - written));
518
if (ret == -1){
689
if(ret == -1){
519
690
perror("write");
520
retval = -1;
521
691
goto mandos_end;
522
692
}
523
693
written += (size_t)ret;
524
694
if(written < out_size){
525
695
continue;
526
696
} else {
527
if (out == mandos_protocol_version){
697
if(out == mandos_protocol_version){
528
698
written = 0;
529
699
out = "\r\n";
530
700
} else {
531
701
break;
532
702
}
533
703
}
704
705
if(quit_now){
706
goto mandos_end;
707
}
534
708
}
535
709
536
710
if(debug){
537
711
fprintf(stderr, "Establishing TLS session with %s\n", ip);
538
712
}
539
713
540
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) tcp_sd);
541
542
do{
543
ret = gnutls_handshake (session);
714
if(quit_now){
715
goto mandos_end;
716
}
717
718
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
719
720
if(quit_now){
721
goto mandos_end;
722
}
723
724
do {
725
ret = gnutls_handshake(session);
726
if(quit_now){
727
goto mandos_end;
728
}
544
729
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
545
730
546
if (ret != GNUTLS_E_SUCCESS){
731
if(ret != GNUTLS_E_SUCCESS){
547
732
if(debug){
548
733
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
549
gnutls_perror (ret);
734
gnutls_perror(ret);
550
735
}
551
retval = -1;
552
736
goto mandos_end;
553
737
}
554
738
555
739
/* Read OpenPGP packet that contains the wanted password */
556
740
557
741
if(debug){
558
fprintf(stderr, "Retrieving pgp encrypted password from %s\n",
742
fprintf(stderr, "Retrieving OpenPGP encrypted password from %s\n",
559
743
ip);
560
744
}
561
745
562
746
while(true){
563
buffer_capacity = adjustbuffer(&buffer, buffer_length,
747
748
if(quit_now){
749
goto mandos_end;
750
}
751
752
buffer_capacity = incbuffer(&buffer, buffer_length,
564
753
buffer_capacity);
565
if (buffer_capacity == 0){
566
perror("adjustbuffer");
567
retval = -1;
568
goto mandos_end;
569
}
570
571
ret = gnutls_record_recv(session, buffer+buffer_length,
572
BUFFER_SIZE);
573
if (ret == 0){
754
if(buffer_capacity == 0){
755
perror("incbuffer");
756
goto mandos_end;
757
}
758
759
if(quit_now){
760
goto mandos_end;
761
}
762
763
sret = gnutls_record_recv(session, buffer+buffer_length,
764
BUFFER_SIZE);
765
if(sret == 0){
574
766
break;
575
767
}
576
if (ret < 0){
577
switch(ret){
768
if(sret < 0){
769
switch(sret){
578
770
case GNUTLS_E_INTERRUPTED:
579
771
case GNUTLS_E_AGAIN:
580
772
break;
581
773
case GNUTLS_E_REHANDSHAKE:
582
do{
583
ret = gnutls_handshake (session);
774
do {
775
ret = gnutls_handshake(session);
776
777
if(quit_now){
778
goto mandos_end;
779
}
584
780
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
585
if (ret < 0){
781
if(ret < 0){
586
782
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
587
gnutls_perror (ret);
588
retval = -1;
783
gnutls_perror(ret);
589
784
goto mandos_end;
590
785
}
591
786
break;
592
787
default:
593
788
fprintf(stderr, "Unknown error while reading data from"
594
789
" encrypted session with Mandos server\n");
595
retval = -1;
596
gnutls_bye (session, GNUTLS_SHUT_RDWR);
790
gnutls_bye(session, GNUTLS_SHUT_RDWR);
597
791
goto mandos_end;
598
792
}
599
793
} else {
600
buffer_length += (size_t) ret;
794
buffer_length += (size_t) sret;
601
795
}
602
796
}
603
797
605
799
fprintf(stderr, "Closing TLS session\n");
606
800
}
607
801
608
gnutls_bye (session, GNUTLS_SHUT_RDWR);
609
610
if (buffer_length > 0){
802
if(quit_now){
803
goto mandos_end;
804
}
805
806
do {
807
ret = gnutls_bye(session, GNUTLS_SHUT_RDWR);
808
if(quit_now){
809
goto mandos_end;
810
}
811
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
812
813
if(buffer_length > 0){
814
ssize_t decrypted_buffer_size;
611
815
decrypted_buffer_size = pgp_packet_decrypt(buffer,
612
816
buffer_length,
613
&decrypted_buffer,
614
keydir);
615
if (decrypted_buffer_size >= 0){
817
&decrypted_buffer);
818
if(decrypted_buffer_size >= 0){
819
616
820
written = 0;
617
821
while(written < (size_t) decrypted_buffer_size){
618
ret = (int)fwrite (decrypted_buffer + written, 1,
619
(size_t)decrypted_buffer_size - written,
620
stdout);
822
if(quit_now){
823
goto mandos_end;
824
}
825
826
ret = (int)fwrite(decrypted_buffer + written, 1,
827
(size_t)decrypted_buffer_size - written,
828
stdout);
621
829
if(ret == 0 and ferror(stdout)){
622
830
if(debug){
623
831
fprintf(stderr, "Error writing encrypted data: %s\n",
624
832
strerror(errno));
625
833
}
626
retval = -1;
627
break;
834
goto mandos_end;
628
835
}
629
836
written += (size_t)ret;
630
837
}
631
free(decrypted_buffer);
632
} else {
633
retval = -1;
838
retval = 0;
634
839
}
635
840
}
636
841
637
842
/* Shutdown procedure */
638
843
639
844
mandos_end:
845
free(decrypted_buffer);
640
846
free(buffer);
641
close(tcp_sd);
642
gnutls_deinit (session);
847
if(tcp_sd >= 0){
848
ret = (int)TEMP_FAILURE_RETRY(close(tcp_sd));
849
}
850
if(ret == -1){
851
perror("close");
852
}
853
gnutls_deinit(session);
854
if(quit_now){
855
retval = -1;
856
}
643
857
return retval;
644
858
}
645
859
646
860
static void resolve_callback(AvahiSServiceResolver *r,
647
861
AvahiIfIndex interface,
648
AVAHI_GCC_UNUSED AvahiProtocol protocol,
862
AvahiProtocol proto,
649
863
AvahiResolverEvent event,
650
864
const char *name,
651
865
const char *type,
656
870
AVAHI_GCC_UNUSED AvahiStringList *txt,
657
871
AVAHI_GCC_UNUSED AvahiLookupResultFlags
658
872
flags,
659
void* userdata) {
660
mandos_context *mc = userdata;
661
assert(r); /* Spurious warning */
873
AVAHI_GCC_UNUSED void* userdata){
874
assert(r);
662
875
663
876
/* Called whenever a service has been resolved successfully or
664
877
timed out */
665
878
666
switch (event) {
879
if(quit_now){
880
return;
881
}
882
883
switch(event){
667
884
default:
668
885
case AVAHI_RESOLVER_FAILURE:
669
886
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
670
887
" of type '%s' in domain '%s': %s\n", name, type, domain,
671
avahi_strerror(avahi_server_errno(mc->server)));
888
avahi_strerror(avahi_server_errno(mc.server)));
672
889
break;
673
890
674
891
case AVAHI_RESOLVER_FOUND:
676
893
char ip[AVAHI_ADDRESS_STR_MAX];
677
894
avahi_address_snprint(ip, sizeof(ip), address);
678
895
if(debug){
679
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %d) on"
680
" port %d\n", name, host_name, ip, interface, port);
896
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
897
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
898
ip, (intmax_t)interface, port);
681
899
}
682
int ret = start_mandos_communication(ip, port, interface, mc);
683
if (ret == 0){
684
exit(EXIT_SUCCESS);
900
int ret = start_mandos_communication(ip, port, interface,
901
avahi_proto_to_af(proto));
902
if(ret == 0){
903
avahi_simple_poll_quit(mc.simple_poll);
685
904
}
686
905
}
687
906
}
688
907
avahi_s_service_resolver_free(r);
689
908
}
690
909
691
static void browse_callback( AvahiSServiceBrowser *b,
692
AvahiIfIndex interface,
693
AvahiProtocol protocol,
694
AvahiBrowserEvent event,
695
const char *name,
696
const char *type,
697
const char *domain,
698
AVAHI_GCC_UNUSED AvahiLookupResultFlags
699
flags,
700
void* userdata) {
701
mandos_context *mc = userdata;
702
assert(b); /* Spurious warning */
910
static void browse_callback(AvahiSServiceBrowser *b,
911
AvahiIfIndex interface,
912
AvahiProtocol protocol,
913
AvahiBrowserEvent event,
914
const char *name,
915
const char *type,
916
const char *domain,
917
AVAHI_GCC_UNUSED AvahiLookupResultFlags
918
flags,
919
AVAHI_GCC_UNUSED void* userdata){
920
assert(b);
703
921
704
922
/* Called whenever a new services becomes available on the LAN or
705
923
is removed from the LAN */
706
924
707
switch (event) {
925
if(quit_now){
926
return;
927
}
928
929
switch(event){
708
930
default:
709
931
case AVAHI_BROWSER_FAILURE:
710
932
711
933
fprintf(stderr, "(Avahi browser) %s\n",
712
avahi_strerror(avahi_server_errno(mc->server)));
713
avahi_simple_poll_quit(mc->simple_poll);
934
avahi_strerror(avahi_server_errno(mc.server)));
935
avahi_simple_poll_quit(mc.simple_poll);
714
936
return;
715
937
716
938
case AVAHI_BROWSER_NEW:
719
941
the callback function is called the Avahi server will free the
720
942
resolver for us. */
721
943
722
if (!(avahi_s_service_resolver_new(mc->server, interface,
723
protocol, name, type, domain,
724
AVAHI_PROTO_INET6, 0,
725
resolve_callback, mc)))
944
if(avahi_s_service_resolver_new(mc.server, interface, protocol,
945
name, type, domain, protocol, 0,
946
resolve_callback, NULL) == NULL)
726
947
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
727
name, avahi_strerror(avahi_server_errno(mc->server)));
948
name, avahi_strerror(avahi_server_errno(mc.server)));
728
949
break;
729
950
730
951
case AVAHI_BROWSER_REMOVE:
739
960
}
740
961
}
741
962
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;
963
/* stop main loop after sigterm has been called */
964
static void handle_sigterm(int sig){
965
if(quit_now){
966
return;
967
}
968
quit_now = 1;
969
signal_received = sig;
970
int old_errno = errno;
971
if(mc.simple_poll != NULL){
972
avahi_simple_poll_quit(mc.simple_poll);
973
}
974
errno = old_errno;
760
975
}
761
976
762
763
977
int main(int argc, char *argv[]){
764
AvahiSServiceBrowser *sb = NULL;
765
int error;
766
int ret;
767
int exitcode = EXIT_SUCCESS;
768
const char *interface = "eth0";
769
struct ifreq network;
770
int sd;
771
uid_t uid;
772
gid_t gid;
773
char *connect_to = NULL;
774
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
775
const char *pubkeyfile = "pubkey.txt";
776
const char *seckeyfile = "seckey.txt";
777
mandos_context mc = { .simple_poll = NULL, .server = NULL,
778
.dh_bits = 1024, .priority = "SECURE256"};
779
bool gnutls_initalized = false;
780
781
{
782
struct argp_option options[] = {
783
{ .name = "debug", .key = 128,
784
.doc = "Debug mode", .group = 3 },
785
{ .name = "connect", .key = 'c',
786
.arg = "IP",
787
.doc = "Connect directly to a sepcified mandos server",
788
.group = 1 },
789
{ .name = "interface", .key = 'i',
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",
796
.group = 1 },
797
{ .name = "seckey", .key = 's',
798
.arg = "SECKEY",
799
.doc = "Secret openpgp key for gnutls authentication",
800
.group = 1 },
801
{ .name = "pubkey", .key = 'p',
802
.arg = "PUBKEY",
803
.doc = "Public openpgp key for gnutls authentication",
804
.group = 2 },
805
{ .name = "dh-bits", .key = 129,
806
.arg = "BITS",
807
.doc = "dh-bits to use in gnutls communication",
808
.group = 2 },
809
{ .name = "priority", .key = 130,
810
.arg = "PRIORITY",
811
.doc = "GNUTLS priority", .group = 1 },
812
{ .name = NULL }
813
};
814
815
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:
822
debug = true;
823
break;
824
case 'c':
825
connect_to = arg;
826
break;
827
case 'i':
828
interface = arg;
829
break;
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");
844
exit(EXIT_FAILURE);
845
}
846
break;
847
case 130:
848
mc.priority = arg;
849
break;
850
case ARGP_KEY_ARG:
851
argp_usage (state);
852
break;
853
case ARGP_KEY_END:
854
break;
855
default:
856
return ARGP_ERR_UNKNOWN;
857
}
858
return 0;
859
}
860
861
struct argp argp = { .options = options, .parser = parse_opt,
862
.args_doc = "",
863
.doc = "Mandos client -- Get and decrypt"
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
894
uid = getuid();
895
gid = getgid();
896
897
ret = setuid(uid);
898
if (ret == -1){
899
perror("setuid");
900
}
901
902
setgid(gid);
903
if (ret == -1){
904
perror("setgid");
905
}
906
978
AvahiSServiceBrowser *sb = NULL;
979
int error;
980
int ret;
981
intmax_t tmpmax;
982
char *tmp;
983
int exitcode = EXIT_SUCCESS;
984
const char *interface = "eth0";
985
struct ifreq network;
986
int sd = -1;
987
bool take_down_interface = false;
988
uid_t uid;
989
gid_t gid;
990
char *connect_to = NULL;
991
char tempdir[] = "/tmp/mandosXXXXXX";
992
bool tempdir_created = false;
993
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
994
const char *seckey = PATHDIR "/" SECKEY;
995
const char *pubkey = PATHDIR "/" PUBKEY;
996
997
bool gnutls_initialized = false;
998
bool gpgme_initialized = false;
999
float delay = 2.5f;
1000
1001
struct sigaction old_sigterm_action = { .sa_handler = SIG_DFL };
1002
struct sigaction sigterm_action = { .sa_handler = handle_sigterm };
1003
1004
uid = getuid();
1005
gid = getgid();
1006
1007
/* Lower any group privileges we might have, just to be safe */
1008
errno = 0;
1009
ret = setgid(gid);
1010
if(ret == -1){
1011
perror("setgid");
1012
}
1013
1014
/* Lower user privileges (temporarily) */
1015
errno = 0;
1016
ret = seteuid(uid);
1017
if(ret == -1){
1018
perror("seteuid");
1019
}
1020
1021
if(quit_now){
1022
goto end;
1023
}
1024
1025
{
1026
struct argp_option options[] = {
1027
{ .name = "debug", .key = 128,
1028
.doc = "Debug mode", .group = 3 },
1029
{ .name = "connect", .key = 'c',
1030
.arg = "ADDRESS:PORT",
1031
.doc = "Connect directly to a specific Mandos server",
1032
.group = 1 },
1033
{ .name = "interface", .key = 'i',
1034
.arg = "NAME",
1035
.doc = "Network interface that will be used to search for"
1036
" Mandos servers",
1037
.group = 1 },
1038
{ .name = "seckey", .key = 's',
1039
.arg = "FILE",
1040
.doc = "OpenPGP secret key file base name",
1041
.group = 1 },
1042
{ .name = "pubkey", .key = 'p',
1043
.arg = "FILE",
1044
.doc = "OpenPGP public key file base name",
1045
.group = 2 },
1046
{ .name = "dh-bits", .key = 129,
1047
.arg = "BITS",
1048
.doc = "Bit length of the prime number used in the"
1049
" Diffie-Hellman key exchange",
1050
.group = 2 },
1051
{ .name = "priority", .key = 130,
1052
.arg = "STRING",
1053
.doc = "GnuTLS priority string for the TLS handshake",
1054
.group = 1 },
1055
{ .name = "delay", .key = 131,
1056
.arg = "SECONDS",
1057
.doc = "Maximum delay to wait for interface startup",
1058
.group = 2 },
1059
{ .name = NULL }
1060
};
1061
1062
error_t parse_opt(int key, char *arg,
1063
struct argp_state *state){
1064
switch(key){
1065
case 128: /* --debug */
1066
debug = true;
1067
break;
1068
case 'c': /* --connect */
1069
connect_to = arg;
1070
break;
1071
case 'i': /* --interface */
1072
interface = arg;
1073
break;
1074
case 's': /* --seckey */
1075
seckey = arg;
1076
break;
1077
case 'p': /* --pubkey */
1078
pubkey = arg;
1079
break;
1080
case 129: /* --dh-bits */
1081
errno = 0;
1082
tmpmax = strtoimax(arg, &tmp, 10);
1083
if(errno != 0 or tmp == arg or *tmp != '\0'
1084
or tmpmax != (typeof(mc.dh_bits))tmpmax){
1085
fprintf(stderr, "Bad number of DH bits\n");
1086
exit(EXIT_FAILURE);
1087
}
1088
mc.dh_bits = (typeof(mc.dh_bits))tmpmax;
1089
break;
1090
case 130: /* --priority */
1091
mc.priority = arg;
1092
break;
1093
case 131: /* --delay */
1094
errno = 0;
1095
delay = strtof(arg, &tmp);
1096
if(errno != 0 or tmp == arg or *tmp != '\0'){
1097
fprintf(stderr, "Bad delay\n");
1098
exit(EXIT_FAILURE);
1099
}
1100
break;
1101
case ARGP_KEY_ARG:
1102
argp_usage(state);
1103
case ARGP_KEY_END:
1104
break;
1105
default:
1106
return ARGP_ERR_UNKNOWN;
1107
}
1108
return 0;
1109
}
1110
1111
struct argp argp = { .options = options, .parser = parse_opt,
1112
.args_doc = "",
1113
.doc = "Mandos client -- Get and decrypt"
1114
" passwords from a Mandos server" };
1115
ret = argp_parse(&argp, argc, argv, 0, 0, NULL);
1116
if(ret == ARGP_ERR_UNKNOWN){
1117
fprintf(stderr, "Unknown error while parsing arguments\n");
1118
exitcode = EXIT_FAILURE;
1119
goto end;
1120
}
1121
}
1122
1123
if(not debug){
1124
avahi_set_log_function(empty_log);
1125
}
1126
1127
/* Initialize Avahi early so avahi_simple_poll_quit() can be called
1128
from the signal handler */
1129
/* Initialize the pseudo-RNG for Avahi */
1130
srand((unsigned int) time(NULL));
1131
mc.simple_poll = avahi_simple_poll_new();
1132
if(mc.simple_poll == NULL){
1133
fprintf(stderr, "Avahi: Failed to create simple poll object.\n");
1134
exitcode = EXIT_FAILURE;
1135
goto end;
1136
}
1137
1138
sigemptyset(&sigterm_action.sa_mask);
1139
ret = sigaddset(&sigterm_action.sa_mask, SIGINT);
1140
if(ret == -1){
1141
perror("sigaddset");
1142
exitcode = EXIT_FAILURE;
1143
goto end;
1144
}
1145
ret = sigaddset(&sigterm_action.sa_mask, SIGHUP);
1146
if(ret == -1){
1147
perror("sigaddset");
1148
exitcode = EXIT_FAILURE;
1149
goto end;
1150
}
1151
ret = sigaddset(&sigterm_action.sa_mask, SIGTERM);
1152
if(ret == -1){
1153
perror("sigaddset");
1154
exitcode = EXIT_FAILURE;
1155
goto end;
1156
}
1157
/* Need to check if the handler is SIG_IGN before handling:
1158
| [[info:libc:Initial Signal Actions]] |
1159
| [[info:libc:Basic Signal Handling]] |
1160
*/
1161
ret = sigaction(SIGINT, NULL, &old_sigterm_action);
1162
if(ret == -1){
1163
perror("sigaction");
1164
return EXIT_FAILURE;
1165
}
1166
if(old_sigterm_action.sa_handler != SIG_IGN){
1167
ret = sigaction(SIGINT, &sigterm_action, NULL);
1168
if(ret == -1){
1169
perror("sigaction");
1170
exitcode = EXIT_FAILURE;
1171
goto end;
1172
}
1173
}
1174
ret = sigaction(SIGHUP, NULL, &old_sigterm_action);
1175
if(ret == -1){
1176
perror("sigaction");
1177
return EXIT_FAILURE;
1178
}
1179
if(old_sigterm_action.sa_handler != SIG_IGN){
1180
ret = sigaction(SIGHUP, &sigterm_action, NULL);
1181
if(ret == -1){
1182
perror("sigaction");
1183
exitcode = EXIT_FAILURE;
1184
goto end;
1185
}
1186
}
1187
ret = sigaction(SIGTERM, NULL, &old_sigterm_action);
1188
if(ret == -1){
1189
perror("sigaction");
1190
return EXIT_FAILURE;
1191
}
1192
if(old_sigterm_action.sa_handler != SIG_IGN){
1193
ret = sigaction(SIGTERM, &sigterm_action, NULL);
1194
if(ret == -1){
1195
perror("sigaction");
1196
exitcode = EXIT_FAILURE;
1197
goto end;
1198
}
1199
}
1200
1201
/* If the interface is down, bring it up */
1202
if(interface[0] != '\0'){
907
1203
if_index = (AvahiIfIndex) if_nametoindex(interface);
908
1204
if(if_index == 0){
909
1205
fprintf(stderr, "No such interface: \"%s\"\n", interface);
910
exit(EXIT_FAILURE);
911
}
912
913
if(connect_to != NULL){
914
/* Connect directly, do not use Zeroconf */
915
/* (Mainly meant for debugging) */
916
char *address = strrchr(connect_to, ':');
917
if(address == NULL){
918
fprintf(stderr, "No colon in address\n");
919
exitcode = EXIT_FAILURE;
920
goto end;
921
}
922
errno = 0;
923
uint16_t port = (uint16_t) strtol(address+1, NULL, 10);
924
if(errno){
925
perror("Bad port number");
926
exitcode = EXIT_FAILURE;
927
goto end;
928
}
929
*address = '\0';
930
address = connect_to;
931
ret = start_mandos_communication(address, port, if_index, &mc);
932
if(ret < 0){
933
exitcode = EXIT_FAILURE;
934
} else {
935
exitcode = EXIT_SUCCESS;
936
}
937
goto end;
938
}
939
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;
1206
exitcode = EXIT_FAILURE;
1207
goto end;
1208
}
1209
1210
if(quit_now){
1211
goto end;
1212
}
1213
1214
/* Re-raise priviliges */
1215
errno = 0;
1216
ret = seteuid(0);
1217
if(ret == -1){
1218
perror("seteuid");
1219
}
1220
1221
#ifdef __linux__
1222
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1223
messages to mess up the prompt */
1224
ret = klogctl(8, NULL, 5);
1225
bool restore_loglevel = true;
1226
if(ret == -1){
1227
restore_loglevel = false;
1228
perror("klogctl");
1229
}
1230
#endif /* __linux__ */
1231
1232
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1233
if(sd < 0){
1234
perror("socket");
1235
exitcode = EXIT_FAILURE;
1236
#ifdef __linux__
1237
if(restore_loglevel){
1238
ret = klogctl(7, NULL, 0);
1239
if(ret == -1){
1240
perror("klogctl");
1241
}
1242
}
1243
#endif /* __linux__ */
1244
/* Lower privileges */
1245
errno = 0;
1246
ret = seteuid(uid);
1247
if(ret == -1){
1248
perror("seteuid");
1249
}
1250
goto end;
1251
}
1252
strcpy(network.ifr_name, interface);
1253
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1254
if(ret == -1){
1255
perror("ioctl SIOCGIFFLAGS");
1256
#ifdef __linux__
1257
if(restore_loglevel){
1258
ret = klogctl(7, NULL, 0);
1259
if(ret == -1){
1260
perror("klogctl");
1261
}
1262
}
1263
#endif /* __linux__ */
1264
exitcode = EXIT_FAILURE;
1265
/* Lower privileges */
1266
errno = 0;
1267
ret = seteuid(uid);
1268
if(ret == -1){
1269
perror("seteuid");
1270
}
1271
goto end;
1272
}
1273
if((network.ifr_flags & IFF_UP) == 0){
1274
network.ifr_flags |= IFF_UP;
1275
take_down_interface = true;
1276
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1277
if(ret == -1){
1278
take_down_interface = false;
1279
perror("ioctl SIOCSIFFLAGS");
1280
exitcode = EXIT_FAILURE;
1281
#ifdef __linux__
1282
if(restore_loglevel){
1283
ret = klogctl(7, NULL, 0);
1284
if(ret == -1){
1285
perror("klogctl");
1286
}
1287
}
1288
#endif /* __linux__ */
1289
/* Lower privileges */
1290
errno = 0;
1291
ret = seteuid(uid);
1292
if(ret == -1){
1293
perror("seteuid");
1294
}
1295
goto end;
1296
}
1297
}
1298
/* sleep checking until interface is running */
1299
for(int i=0; i < delay * 4; i++){
1300
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1301
if(ret == -1){
1302
perror("ioctl SIOCGIFFLAGS");
1303
} else if(network.ifr_flags & IFF_RUNNING){
1304
break;
1305
}
1306
struct timespec sleeptime = { .tv_nsec = 250000000 };
1307
ret = nanosleep(&sleeptime, NULL);
1308
if(ret == -1 and errno != EINTR){
1309
perror("nanosleep");
1310
}
1311
}
1312
if(not take_down_interface){
1313
/* We won't need the socket anymore */
1314
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1315
if(ret == -1){
1316
perror("close");
1317
}
1318
}
1319
#ifdef __linux__
1320
if(restore_loglevel){
1321
/* Restores kernel loglevel to default */
1322
ret = klogctl(7, NULL, 0);
1323
if(ret == -1){
1324
perror("klogctl");
1325
}
1326
}
1327
#endif /* __linux__ */
1328
/* Lower privileges */
1329
errno = 0;
1330
if(take_down_interface){
1331
/* Lower privileges */
1332
ret = seteuid(uid);
1333
if(ret == -1){
1334
perror("seteuid");
1335
}
1336
} else {
1337
/* Lower privileges permanently */
1338
ret = setuid(uid);
1339
if(ret == -1){
1340
perror("setuid");
1341
}
1342
}
1343
}
1344
1345
if(quit_now){
1346
goto end;
1347
}
1348
1349
ret = init_gnutls_global(pubkey, seckey);
1350
if(ret == -1){
1351
fprintf(stderr, "init_gnutls_global failed\n");
1352
exitcode = EXIT_FAILURE;
1353
goto end;
1354
} else {
1355
gnutls_initialized = true;
1356
}
1357
1358
if(quit_now){
1359
goto end;
1360
}
1361
1362
tempdir_created = true;
1363
if(mkdtemp(tempdir) == NULL){
1364
tempdir_created = false;
1365
perror("mkdtemp");
1366
goto end;
1367
}
1368
1369
if(quit_now){
1370
goto end;
1371
}
1372
1373
if(not init_gpgme(pubkey, seckey, tempdir)){
1374
fprintf(stderr, "init_gpgme failed\n");
1375
exitcode = EXIT_FAILURE;
1376
goto end;
1377
} else {
1378
gpgme_initialized = true;
1379
}
1380
1381
if(quit_now){
1382
goto end;
1383
}
1384
1385
if(connect_to != NULL){
1386
/* Connect directly, do not use Zeroconf */
1387
/* (Mainly meant for debugging) */
1388
char *address = strrchr(connect_to, ':');
1389
if(address == NULL){
1390
fprintf(stderr, "No colon in address\n");
1391
exitcode = EXIT_FAILURE;
1392
goto end;
1393
}
1394
1395
if(quit_now){
1396
goto end;
1397
}
1398
1399
uint16_t port;
1400
errno = 0;
1401
tmpmax = strtoimax(address+1, &tmp, 10);
1402
if(errno != 0 or tmp == address+1 or *tmp != '\0'
1403
or tmpmax != (uint16_t)tmpmax){
1404
fprintf(stderr, "Bad port number\n");
1405
exitcode = EXIT_FAILURE;
1406
goto end;
1407
}
1408
1409
if(quit_now){
1410
goto end;
1411
}
1412
1413
port = (uint16_t)tmpmax;
1414
*address = '\0';
1415
address = connect_to;
1416
/* Colon in address indicates IPv6 */
1417
int af;
1418
if(strchr(address, ':') != NULL){
1419
af = AF_INET6;
1420
} else {
1421
af = AF_INET;
1422
}
1423
1424
if(quit_now){
1425
goto end;
1426
}
1427
1428
ret = start_mandos_communication(address, port, if_index, af);
1429
if(ret < 0){
1430
exitcode = EXIT_FAILURE;
1431
} else {
1432
exitcode = EXIT_SUCCESS;
1433
}
1434
goto end;
1435
}
1436
1437
if(quit_now){
1438
goto end;
1439
}
1440
1441
{
1442
AvahiServerConfig config;
1443
/* Do not publish any local Zeroconf records */
1444
avahi_server_config_init(&config);
1445
config.publish_hinfo = 0;
1446
config.publish_addresses = 0;
1447
config.publish_workstation = 0;
1448
config.publish_domain = 0;
1449
1450
/* Allocate a new server */
1451
mc.server = avahi_server_new(avahi_simple_poll_get
1452
(mc.simple_poll), &config, NULL,
1453
NULL, &error);
1454
1455
/* Free the Avahi configuration data */
1456
avahi_server_config_free(&config);
1457
}
1458
1459
/* Check if creating the Avahi server object succeeded */
1460
if(mc.server == NULL){
1461
fprintf(stderr, "Failed to create Avahi server: %s\n",
1462
avahi_strerror(error));
1463
exitcode = EXIT_FAILURE;
1464
goto end;
1465
}
1466
1467
if(quit_now){
1468
goto end;
1469
}
1470
1471
/* Create the Avahi service browser */
1472
sb = avahi_s_service_browser_new(mc.server, if_index,
1473
AVAHI_PROTO_UNSPEC, "_mandos._tcp",
1474
NULL, 0, browse_callback, NULL);
1475
if(sb == NULL){
1476
fprintf(stderr, "Failed to create service browser: %s\n",
1477
avahi_strerror(avahi_server_errno(mc.server)));
1478
exitcode = EXIT_FAILURE;
1479
goto end;
1480
}
1481
1482
if(quit_now){
1483
goto end;
1484
}
1485
1486
/* Run the main loop */
1487
1488
if(debug){
1489
fprintf(stderr, "Starting Avahi loop search\n");
1490
}
1491
1492
avahi_simple_poll_loop(mc.simple_poll);
1493
1494
end:
1495
1496
if(debug){
1497
fprintf(stderr, "%s exiting\n", argv[0]);
1498
}
1499
1500
/* Cleanup things */
1501
if(sb != NULL)
1502
avahi_s_service_browser_free(sb);
1503
1504
if(mc.server != NULL)
1505
avahi_server_free(mc.server);
1506
1507
if(mc.simple_poll != NULL)
1508
avahi_simple_poll_free(mc.simple_poll);
1509
1510
if(gnutls_initialized){
1511
gnutls_certificate_free_credentials(mc.cred);
1512
gnutls_global_deinit();
1513
gnutls_dh_params_deinit(mc.dh_params);
1514
}
1515
1516
if(gpgme_initialized){
1517
gpgme_release(mc.ctx);
1518
}
1519
1520
/* Take down the network interface */
1521
if(take_down_interface){
1522
/* Re-raise priviliges */
1523
errno = 0;
1524
ret = seteuid(0);
1525
if(ret == -1){
1526
perror("seteuid");
1527
}
1528
if(geteuid() == 0){
1529
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1530
if(ret == -1){
1531
perror("ioctl SIOCGIFFLAGS");
1532
} else if(network.ifr_flags & IFF_UP) {
1533
network.ifr_flags &= ~IFF_UP; /* clear flag */
957
1534
ret = ioctl(sd, SIOCSIFFLAGS, &network);
958
1535
if(ret == -1){
959
1536
perror("ioctl SIOCSIFFLAGS");
960
exitcode = EXIT_FAILURE;
961
goto end;
962
}
963
}
964
close(sd);
965
}
966
967
if (not debug){
968
avahi_set_log_function(empty_log);
969
}
970
971
/* Initialize the pseudo-RNG for Avahi */
972
srand((unsigned int) time(NULL));
973
974
/* Allocate main Avahi loop object */
975
mc.simple_poll = avahi_simple_poll_new();
976
if (mc.simple_poll == NULL) {
977
fprintf(stderr, "Avahi: Failed to create simple poll"
978
" object.\n");
979
exitcode = EXIT_FAILURE;
980
goto end;
981
}
982
983
{
984
AvahiServerConfig config;
985
/* Do not publish any local Zeroconf records */
986
avahi_server_config_init(&config);
987
config.publish_hinfo = 0;
988
config.publish_addresses = 0;
989
config.publish_workstation = 0;
990
config.publish_domain = 0;
991
992
/* Allocate a new server */
993
mc.server = avahi_server_new(avahi_simple_poll_get
994
(mc.simple_poll), &config, NULL,
995
NULL, &error);
996
997
/* Free the Avahi configuration data */
998
avahi_server_config_free(&config);
999
}
1000
1001
/* Check if creating the Avahi server object succeeded */
1002
if (mc.server == NULL) {
1003
fprintf(stderr, "Failed to create Avahi server: %s\n",
1004
avahi_strerror(error));
1005
exitcode = EXIT_FAILURE;
1006
goto end;
1007
}
1008
1009
/* Create the Avahi service browser */
1010
sb = avahi_s_service_browser_new(mc.server, if_index,
1011
AVAHI_PROTO_INET6,
1012
"_mandos._tcp", NULL, 0,
1013
browse_callback, &mc);
1014
if (sb == NULL) {
1015
fprintf(stderr, "Failed to create service browser: %s\n",
1016
avahi_strerror(avahi_server_errno(mc.server)));
1017
exitcode = EXIT_FAILURE;
1018
goto end;
1019
}
1020
1021
/* Run the main loop */
1022
1023
if (debug){
1024
fprintf(stderr, "Starting Avahi loop search\n");
1025
}
1026
1027
avahi_simple_poll_loop(mc.simple_poll);
1028
1029
end:
1030
1031
if (debug){
1032
fprintf(stderr, "%s exiting\n", argv[0]);
1033
}
1034
1035
/* Cleanup things */
1036
if (sb != NULL)
1037
avahi_s_service_browser_free(sb);
1038
1039
if (mc.server != NULL)
1040
avahi_server_free(mc.server);
1041
1042
if (mc.simple_poll != NULL)
1043
avahi_simple_poll_free(mc.simple_poll);
1044
free(pubkeyfile);
1045
free(seckeyfile);
1046
1047
if (gnutls_initalized){
1048
gnutls_certificate_free_credentials(mc.cred);
1049
gnutls_global_deinit ();
1050
}
1051
1052
return exitcode;
1537
}
1538
}
1539
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1540
if(ret == -1){
1541
perror("close");
1542
}
1543
/* Lower privileges permanently */
1544
errno = 0;
1545
ret = setuid(uid);
1546
if(ret == -1){
1547
perror("setuid");
1548
}
1549
}
1550
}
1551
1552
/* Removes the temp directory used by GPGME */
1553
if(tempdir_created){
1554
DIR *d;
1555
struct dirent *direntry;
1556
d = opendir(tempdir);
1557
if(d == NULL){
1558
if(errno != ENOENT){
1559
perror("opendir");
1560
}
1561
} else {
1562
while(true){
1563
direntry = readdir(d);
1564
if(direntry == NULL){
1565
break;
1566
}
1567
/* Skip "." and ".." */
1568
if(direntry->d_name[0] == '.'
1569
and (direntry->d_name[1] == '\0'
1570
or (direntry->d_name[1] == '.'
1571
and direntry->d_name[2] == '\0'))){
1572
continue;
1573
}
1574
char *fullname = NULL;
1575
ret = asprintf(&fullname, "%s/%s", tempdir,
1576
direntry->d_name);
1577
if(ret < 0){
1578
perror("asprintf");
1579
continue;
1580
}
1581
ret = remove(fullname);
1582
if(ret == -1){
1583
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1584
strerror(errno));
1585
}
1586
free(fullname);
1587
}
1588
closedir(d);
1589
}
1590
ret = rmdir(tempdir);
1591
if(ret == -1 and errno != ENOENT){
1592
perror("rmdir");
1593
}
1594
}
1595
1596
if(quit_now){
1597
sigemptyset(&old_sigterm_action.sa_mask);
1598
old_sigterm_action.sa_handler = SIG_DFL;
1599
ret = (int)TEMP_FAILURE_RETRY(sigaction(signal_received,
1600
&old_sigterm_action,
1601
NULL));
1602
if(ret == -1){
1603
perror("sigaction");
1604
}
1605
do {
1606
ret = raise(signal_received);
1607
} while(ret != 0 and errno == EINTR);
1608
if(ret != 0){
1609
perror("raise");
1610
abort();
1611
}
1612
TEMP_FAILURE_RETRY(pause());
1613
}
1614
1615
return exitcode;
1053
1616
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0