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- Committer: teddy at bsnet
- Date: 2011-03-15 20:13:05 UTC
- Revision ID: teddy@fukt.bsnet.se-20110315201305-1eptd9mvxem1qtr2
* mandos-ctl: Use the new argparse library instead of optparse.
- files removed:
- debian/source/local-options
- files modified:
- DBUS-API
added
removed
plugins.d/mandos-client.c
26
26
* along with this program. If not, see
27
27
* <http://www.gnu.org/licenses/>.
28
28
*
29
* Contact the authors at <mandos@recompile.se>.
29
* Contact the authors at <mandos@fukt.bsnet.se>.
30
30
*/
31
31
32
32
/* Needed by GPGME, specifically gpgme_data_seek() */
53
53
sockaddr_in6, PF_INET6,
54
54
SOCK_STREAM, uid_t, gid_t, open(),
55
55
opendir(), DIR */
56
#include <sys/stat.h> /* open(), S_ISREG */
56
#include <sys/stat.h> /* open() */
57
57
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
58
58
inet_pton(), connect() */
59
59
#include <fcntl.h> /* open() */
62
62
#include <inttypes.h> /* PRIu16, PRIdMAX, intmax_t,
63
63
strtoimax() */
64
64
#include <assert.h> /* assert() */
65
#include <errno.h> /* perror(), errno,
66
program_invocation_short_name */
65
#include <errno.h> /* perror(), errno */
67
66
#include <time.h> /* nanosleep(), time(), sleep() */
68
67
#include <net/if.h> /* ioctl, ifreq, SIOCGIFFLAGS, IFF_UP,
69
68
SIOCSIFFLAGS, if_indextoname(),
74
73
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
75
74
getuid(), getgid(), seteuid(),
76
75
setgid(), pause() */
77
#include <arpa/inet.h> /* inet_pton(), htons, inet_ntop() */
76
#include <arpa/inet.h> /* inet_pton(), htons */
78
77
#include <iso646.h> /* not, or, and */
79
78
#include <argp.h> /* struct argp_option, error_t, struct
80
79
argp_state, struct argp,
85
84
raise() */
86
85
#include <sysexits.h> /* EX_OSERR, EX_USAGE, EX_UNAVAILABLE,
87
86
EX_NOHOST, EX_IOERR, EX_PROTOCOL */
88
#include <sys/wait.h> /* waitpid(), WIFEXITED(),
89
WEXITSTATUS(), WTERMSIG() */
90
87
91
88
#ifdef __linux__
92
89
#include <sys/klog.h> /* klogctl() */
110
107
init_gnutls_session(),
111
108
GNUTLS_* */
112
109
#include <gnutls/openpgp.h>
113
/* gnutls_certificate_set_openpgp_key_file(),
114
GNUTLS_OPENPGP_FMT_BASE64 */
110
/* gnutls_certificate_set_openpgp_key_file(),
111
GNUTLS_OPENPGP_FMT_BASE64 */
115
112
116
113
/* GPGME */
117
114
#include <gpgme.h> /* All GPGME types, constants and
125
122
#define PATHDIR "/conf/conf.d/mandos"
126
123
#define SECKEY "seckey.txt"
127
124
#define PUBKEY "pubkey.txt"
128
#define HOOKDIR "/lib/mandos/network-hooks.d"
129
125
130
126
bool debug = false;
131
127
static const char mandos_protocol_version[] = "1";
132
128
const char *argp_program_version = "mandos-client " VERSION;
133
const char *argp_program_bug_address = "<mandos@recompile.se>";
129
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
134
130
static const char sys_class_net[] = "/sys/class/net";
135
131
char *connect_to = NULL;
136
const char *hookdir = HOOKDIR;
137
138
/* Doubly linked list that need to be circularly linked when used */
139
typedef struct server{
140
const char *ip;
141
uint16_t port;
142
AvahiIfIndex if_index;
143
int af;
144
struct timespec last_seen;
145
struct server *next;
146
struct server *prev;
147
} server;
148
132
149
133
/* Used for passing in values through the Avahi callback functions */
150
134
typedef struct {
155
139
gnutls_dh_params_t dh_params;
156
140
const char *priority;
157
141
gpgme_ctx_t ctx;
158
server *current_server;
159
142
} mandos_context;
160
143
161
144
/* global context so signal handler can reach it*/
162
145
mandos_context mc = { .simple_poll = NULL, .server = NULL,
163
146
.dh_bits = 1024, .priority = "SECURE256"
164
":!CTYPE-X.509:+CTYPE-OPENPGP",
165
.current_server = NULL };
147
":!CTYPE-X.509:+CTYPE-OPENPGP" };
166
148
167
149
sig_atomic_t quit_now = 0;
168
150
int signal_received = 0;
169
151
170
/* Function to use when printing errors */
171
void perror_plus(const char *print_text){
172
fprintf(stderr, "Mandos plugin %s: ",
173
program_invocation_short_name);
174
perror(print_text);
175
}
176
177
int fprintf_plus(FILE *stream, const char *format, ...){
178
va_list ap;
179
va_start (ap, format);
180
181
TEMP_FAILURE_RETRY(fprintf(stream, "Mandos plugin %s: ", program_invocation_short_name));
182
return TEMP_FAILURE_RETRY(vfprintf(stream, format, ap));
183
}
184
185
152
/*
186
153
* Make additional room in "buffer" for at least BUFFER_SIZE more
187
154
* bytes. "buffer_capacity" is how much is currently allocated,
188
155
* "buffer_length" is how much is already used.
189
156
*/
190
157
size_t incbuffer(char **buffer, size_t buffer_length,
191
size_t buffer_capacity){
158
size_t buffer_capacity){
192
159
if(buffer_length + BUFFER_SIZE > buffer_capacity){
193
160
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
194
161
if(buffer == NULL){
199
166
return buffer_capacity;
200
167
}
201
168
202
/* Add server to set of servers to retry periodically */
203
int add_server(const char *ip, uint16_t port, AvahiIfIndex if_index,
204
int af){
205
int ret;
206
server *new_server = malloc(sizeof(server));
207
if(new_server == NULL){
208
perror_plus("malloc");
209
return -1;
210
}
211
*new_server = (server){ .ip = strdup(ip),
212
.port = port,
213
.if_index = if_index,
214
.af = af };
215
if(new_server->ip == NULL){
216
perror_plus("strdup");
217
return -1;
218
}
219
/* Special case of first server */
220
if (mc.current_server == NULL){
221
new_server->next = new_server;
222
new_server->prev = new_server;
223
mc.current_server = new_server;
224
/* Place the new server last in the list */
225
} else {
226
new_server->next = mc.current_server;
227
new_server->prev = mc.current_server->prev;
228
new_server->prev->next = new_server;
229
mc.current_server->prev = new_server;
230
}
231
ret = clock_gettime(CLOCK_MONOTONIC, &mc.current_server->last_seen);
232
if(ret == -1){
233
perror_plus("clock_gettime");
234
return -1;
235
}
236
return 0;
237
}
238
239
169
/*
240
170
* Initialize GPGME.
241
171
*/
242
static bool init_gpgme(const char *seckey, const char *pubkey,
243
const char *tempdir){
172
static bool init_gpgme(const char *seckey,
173
const char *pubkey, const char *tempdir){
244
174
gpgme_error_t rc;
245
175
gpgme_engine_info_t engine_info;
246
176
255
185
256
186
fd = (int)TEMP_FAILURE_RETRY(open(filename, O_RDONLY));
257
187
if(fd == -1){
258
perror_plus("open");
188
perror("open");
259
189
return false;
260
190
}
261
191
262
192
rc = gpgme_data_new_from_fd(&pgp_data, fd);
263
193
if(rc != GPG_ERR_NO_ERROR){
264
fprintf(stderr, "Mandos plugin mandos-client: "
265
"bad gpgme_data_new_from_fd: %s: %s\n",
194
fprintf(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
266
195
gpgme_strsource(rc), gpgme_strerror(rc));
267
196
return false;
268
197
}
269
198
270
199
rc = gpgme_op_import(mc.ctx, pgp_data);
271
200
if(rc != GPG_ERR_NO_ERROR){
272
fprintf(stderr, "Mandos plugin mandos-client: "
273
"bad gpgme_op_import: %s: %s\n",
201
fprintf(stderr, "bad gpgme_op_import: %s: %s\n",
274
202
gpgme_strsource(rc), gpgme_strerror(rc));
275
203
return false;
276
204
}
277
205
278
206
ret = (int)TEMP_FAILURE_RETRY(close(fd));
279
207
if(ret == -1){
280
perror_plus("close");
208
perror("close");
281
209
}
282
210
gpgme_data_release(pgp_data);
283
211
return true;
284
212
}
285
213
286
214
if(debug){
287
fprintf(stderr, "Mandos plugin mandos-client: "
288
"Initializing GPGME\n");
215
fprintf(stderr, "Initializing GPGME\n");
289
216
}
290
217
291
218
/* Init GPGME */
292
219
gpgme_check_version(NULL);
293
220
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
294
221
if(rc != GPG_ERR_NO_ERROR){
295
fprintf(stderr, "Mandos plugin mandos-client: "
296
"bad gpgme_engine_check_version: %s: %s\n",
222
fprintf(stderr, "bad gpgme_engine_check_version: %s: %s\n",
297
223
gpgme_strsource(rc), gpgme_strerror(rc));
298
224
return false;
299
225
}
300
226
301
/* Set GPGME home directory for the OpenPGP engine only */
227
/* Set GPGME home directory for the OpenPGP engine only */
302
228
rc = gpgme_get_engine_info(&engine_info);
303
229
if(rc != GPG_ERR_NO_ERROR){
304
fprintf(stderr, "Mandos plugin mandos-client: "
305
"bad gpgme_get_engine_info: %s: %s\n",
230
fprintf(stderr, "bad gpgme_get_engine_info: %s: %s\n",
306
231
gpgme_strsource(rc), gpgme_strerror(rc));
307
232
return false;
308
233
}
315
240
engine_info = engine_info->next;
316
241
}
317
242
if(engine_info == NULL){
318
fprintf(stderr, "Mandos plugin mandos-client: "
319
"Could not set GPGME home dir to %s\n", tempdir);
243
fprintf(stderr, "Could not set GPGME home dir to %s\n", tempdir);
320
244
return false;
321
245
}
322
246
323
247
/* Create new GPGME "context" */
324
248
rc = gpgme_new(&(mc.ctx));
325
249
if(rc != GPG_ERR_NO_ERROR){
326
fprintf(stderr, "Mandos plugin mandos-client: "
327
"bad gpgme_new: %s: %s\n", gpgme_strsource(rc),
328
gpgme_strerror(rc));
250
fprintf(stderr, "bad gpgme_new: %s: %s\n",
251
gpgme_strsource(rc), gpgme_strerror(rc));
329
252
return false;
330
253
}
331
254
350
273
ssize_t plaintext_length = 0;
351
274
352
275
if(debug){
353
fprintf(stderr, "Mandos plugin mandos-client: "
354
"Trying to decrypt OpenPGP data\n");
276
fprintf(stderr, "Trying to decrypt OpenPGP data\n");
355
277
}
356
278
357
279
/* Create new GPGME data buffer from memory cryptotext */
358
280
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
359
281
0);
360
282
if(rc != GPG_ERR_NO_ERROR){
361
fprintf(stderr, "Mandos plugin mandos-client: "
362
"bad gpgme_data_new_from_mem: %s: %s\n",
283
fprintf(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
363
284
gpgme_strsource(rc), gpgme_strerror(rc));
364
285
return -1;
365
286
}
367
288
/* Create new empty GPGME data buffer for the plaintext */
368
289
rc = gpgme_data_new(&dh_plain);
369
290
if(rc != GPG_ERR_NO_ERROR){
370
fprintf(stderr, "Mandos plugin mandos-client: "
371
"bad gpgme_data_new: %s: %s\n",
291
fprintf(stderr, "bad gpgme_data_new: %s: %s\n",
372
292
gpgme_strsource(rc), gpgme_strerror(rc));
373
293
gpgme_data_release(dh_crypto);
374
294
return -1;
378
298
data buffer */
379
299
rc = gpgme_op_decrypt(mc.ctx, dh_crypto, dh_plain);
380
300
if(rc != GPG_ERR_NO_ERROR){
381
fprintf(stderr, "Mandos plugin mandos-client: "
382
"bad gpgme_op_decrypt: %s: %s\n",
301
fprintf(stderr, "bad gpgme_op_decrypt: %s: %s\n",
383
302
gpgme_strsource(rc), gpgme_strerror(rc));
384
303
plaintext_length = -1;
385
304
if(debug){
386
305
gpgme_decrypt_result_t result;
387
306
result = gpgme_op_decrypt_result(mc.ctx);
388
307
if(result == NULL){
389
fprintf(stderr, "Mandos plugin mandos-client: "
390
"gpgme_op_decrypt_result failed\n");
308
fprintf(stderr, "gpgme_op_decrypt_result failed\n");
391
309
} else {
392
fprintf(stderr, "Mandos plugin mandos-client: "
393
"Unsupported algorithm: %s\n",
310
fprintf(stderr, "Unsupported algorithm: %s\n",
394
311
result->unsupported_algorithm);
395
fprintf(stderr, "Mandos plugin mandos-client: "
396
"Wrong key usage: %u\n",
312
fprintf(stderr, "Wrong key usage: %u\n",
397
313
result->wrong_key_usage);
398
314
if(result->file_name != NULL){
399
fprintf(stderr, "Mandos plugin mandos-client: "
400
"File name: %s\n", result->file_name);
315
fprintf(stderr, "File name: %s\n", result->file_name);
401
316
}
402
317
gpgme_recipient_t recipient;
403
318
recipient = result->recipients;
404
319
while(recipient != NULL){
405
fprintf(stderr, "Mandos plugin mandos-client: "
406
"Public key algorithm: %s\n",
320
fprintf(stderr, "Public key algorithm: %s\n",
407
321
gpgme_pubkey_algo_name(recipient->pubkey_algo));
408
fprintf(stderr, "Mandos plugin mandos-client: "
409
"Key ID: %s\n", recipient->keyid);
410
fprintf(stderr, "Mandos plugin mandos-client: "
411
"Secret key available: %s\n",
322
fprintf(stderr, "Key ID: %s\n", recipient->keyid);
323
fprintf(stderr, "Secret key available: %s\n",
412
324
recipient->status == GPG_ERR_NO_SECKEY
413
325
? "No" : "Yes");
414
326
recipient = recipient->next;
419
331
}
420
332
421
333
if(debug){
422
fprintf(stderr, "Mandos plugin mandos-client: "
423
"Decryption of OpenPGP data succeeded\n");
334
fprintf(stderr, "Decryption of OpenPGP data succeeded\n");
424
335
}
425
336
426
337
/* Seek back to the beginning of the GPGME plaintext data buffer */
427
338
if(gpgme_data_seek(dh_plain, (off_t)0, SEEK_SET) == -1){
428
perror_plus("gpgme_data_seek");
339
perror("gpgme_data_seek");
429
340
plaintext_length = -1;
430
341
goto decrypt_end;
431
342
}
433
344
*plaintext = NULL;
434
345
while(true){
435
346
plaintext_capacity = incbuffer(plaintext,
436
(size_t)plaintext_length,
437
plaintext_capacity);
347
(size_t)plaintext_length,
348
plaintext_capacity);
438
349
if(plaintext_capacity == 0){
439
perror_plus("incbuffer");
440
plaintext_length = -1;
441
goto decrypt_end;
350
perror("incbuffer");
351
plaintext_length = -1;
352
goto decrypt_end;
442
353
}
443
354
444
355
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
449
360
break;
450
361
}
451
362
if(ret < 0){
452
perror_plus("gpgme_data_read");
363
perror("gpgme_data_read");
453
364
plaintext_length = -1;
454
365
goto decrypt_end;
455
366
}
457
368
}
458
369
459
370
if(debug){
460
fprintf(stderr, "Mandos plugin mandos-client: "
461
"Decrypted password is: ");
371
fprintf(stderr, "Decrypted password is: ");
462
372
for(ssize_t i = 0; i < plaintext_length; i++){
463
373
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
464
374
}
486
396
/* GnuTLS log function callback */
487
397
static void debuggnutls(__attribute__((unused)) int level,
488
398
const char* string){
489
fprintf(stderr, "Mandos plugin mandos-client: GnuTLS: %s", string);
399
fprintf(stderr, "GnuTLS: %s", string);
490
400
}
491
401
492
402
static int init_gnutls_global(const char *pubkeyfilename,
494
404
int ret;
495
405
496
406
if(debug){
497
fprintf(stderr, "Mandos plugin mandos-client: "
498
"Initializing GnuTLS\n");
407
fprintf(stderr, "Initializing GnuTLS\n");
499
408
}
500
409
501
410
ret = gnutls_global_init();
502
411
if(ret != GNUTLS_E_SUCCESS){
503
fprintf(stderr, "Mandos plugin mandos-client: "
504
"GnuTLS global_init: %s\n", safer_gnutls_strerror(ret));
412
fprintf(stderr, "GnuTLS global_init: %s\n",
413
safer_gnutls_strerror(ret));
505
414
return -1;
506
415
}
507
416
514
423
}
515
424
516
425
/* OpenPGP credentials */
517
ret = gnutls_certificate_allocate_credentials(&mc.cred);
426
gnutls_certificate_allocate_credentials(&mc.cred);
518
427
if(ret != GNUTLS_E_SUCCESS){
519
fprintf(stderr, "Mandos plugin mandos-client: "
520
"GnuTLS memory error: %s\n", safer_gnutls_strerror(ret));
428
fprintf(stderr, "GnuTLS memory error: %s\n", /* Spurious warning
429
from
430
-Wunreachable-code
431
*/
432
safer_gnutls_strerror(ret));
521
433
gnutls_global_deinit();
522
434
return -1;
523
435
}
524
436
525
437
if(debug){
526
fprintf(stderr, "Mandos plugin mandos-client: "
527
"Attempting to use OpenPGP public key %s and"
438
fprintf(stderr, "Attempting to use OpenPGP public key %s and"
528
439
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
529
440
seckeyfilename);
530
441
}
534
445
GNUTLS_OPENPGP_FMT_BASE64);
535
446
if(ret != GNUTLS_E_SUCCESS){
536
447
fprintf(stderr,
537
"Mandos plugin mandos-client: "
538
448
"Error[%d] while reading the OpenPGP key pair ('%s',"
539
449
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
540
fprintf(stderr, "Mandos plugin mandos-client: "
541
"The GnuTLS error is: %s\n", safer_gnutls_strerror(ret));
450
fprintf(stderr, "The GnuTLS error is: %s\n",
451
safer_gnutls_strerror(ret));
542
452
goto globalfail;
543
453
}
544
454
545
455
/* GnuTLS server initialization */
546
456
ret = gnutls_dh_params_init(&mc.dh_params);
547
457
if(ret != GNUTLS_E_SUCCESS){
548
fprintf(stderr, "Mandos plugin mandos-client: "
549
"Error in GnuTLS DH parameter initialization:"
458
fprintf(stderr, "Error in GnuTLS DH parameter initialization:"
550
459
" %s\n", safer_gnutls_strerror(ret));
551
460
goto globalfail;
552
461
}
553
462
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
554
463
if(ret != GNUTLS_E_SUCCESS){
555
fprintf(stderr, "Mandos plugin mandos-client: "
556
"Error in GnuTLS prime generation: %s\n",
464
fprintf(stderr, "Error in GnuTLS prime generation: %s\n",
557
465
safer_gnutls_strerror(ret));
558
466
goto globalfail;
559
467
}
580
488
}
581
489
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
582
490
if(ret != GNUTLS_E_SUCCESS){
583
fprintf(stderr, "Mandos plugin mandos-client: "
584
"Error in GnuTLS session initialization: %s\n",
491
fprintf(stderr, "Error in GnuTLS session initialization: %s\n",
585
492
safer_gnutls_strerror(ret));
586
493
}
587
494
595
502
}
596
503
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
597
504
if(ret != GNUTLS_E_SUCCESS){
598
fprintf(stderr, "Mandos plugin mandos-client: "
599
"Syntax error at: %s\n", err);
600
fprintf(stderr, "Mandos plugin mandos-client: "
601
"GnuTLS error: %s\n", safer_gnutls_strerror(ret));
505
fprintf(stderr, "Syntax error at: %s\n", err);
506
fprintf(stderr, "GnuTLS error: %s\n",
507
safer_gnutls_strerror(ret));
602
508
gnutls_deinit(*session);
603
509
return -1;
604
510
}
613
519
}
614
520
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
615
521
if(ret != GNUTLS_E_SUCCESS){
616
fprintf(stderr, "Mandos plugin mandos-client: "
617
"Error setting GnuTLS credentials: %s\n",
522
fprintf(stderr, "Error setting GnuTLS credentials: %s\n",
618
523
safer_gnutls_strerror(ret));
619
524
gnutls_deinit(*session);
620
525
return -1;
666
571
pf = PF_INET;
667
572
break;
668
573
default:
669
fprintf(stderr, "Mandos plugin mandos-client: "
670
"Bad address family: %d\n", af);
574
fprintf(stderr, "Bad address family: %d\n", af);
671
575
errno = EINVAL;
672
576
return -1;
673
577
}
678
582
}
679
583
680
584
if(debug){
681
fprintf(stderr, "Mandos plugin mandos-client: "
682
"Setting up a TCP connection to %s, port %" PRIu16
585
fprintf(stderr, "Setting up a TCP connection to %s, port %" PRIu16
683
586
"\n", ip, port);
684
587
}
685
588
686
589
tcp_sd = socket(pf, SOCK_STREAM, 0);
687
590
if(tcp_sd < 0){
688
591
int e = errno;
689
perror_plus("socket");
592
perror("socket");
690
593
errno = e;
691
594
goto mandos_end;
692
595
}
706
609
}
707
610
if(ret < 0 ){
708
611
int e = errno;
709
perror_plus("inet_pton");
612
perror("inet_pton");
710
613
errno = e;
711
614
goto mandos_end;
712
615
}
713
616
if(ret == 0){
714
617
int e = errno;
715
fprintf(stderr, "Mandos plugin mandos-client: "
716
"Bad address: %s\n", ip);
618
fprintf(stderr, "Bad address: %s\n", ip);
717
619
errno = e;
718
620
goto mandos_end;
719
621
}
724
626
725
627
if(IN6_IS_ADDR_LINKLOCAL /* Spurious warnings from */
726
628
(&to.in6.sin6_addr)){ /* -Wstrict-aliasing=2 or lower and
727
-Wunreachable-code*/
629
-Wunreachable-code*/
728
630
if(if_index == AVAHI_IF_UNSPEC){
729
fprintf(stderr, "Mandos plugin mandos-client: "
730
"An IPv6 link-local address is incomplete"
631
fprintf(stderr, "An IPv6 link-local address is incomplete"
731
632
" without a network interface\n");
732
633
errno = EINVAL;
733
634
goto mandos_end;
750
651
if(af == AF_INET6 and if_index != AVAHI_IF_UNSPEC){
751
652
char interface[IF_NAMESIZE];
752
653
if(if_indextoname((unsigned int)if_index, interface) == NULL){
753
perror_plus("if_indextoname");
654
perror("if_indextoname");
754
655
} else {
755
fprintf(stderr, "Mandos plugin mandos-client: "
756
"Connection to: %s%%%s, port %" PRIu16 "\n",
656
fprintf(stderr, "Connection to: %s%%%s, port %" PRIu16 "\n",
757
657
ip, interface, port);
758
658
}
759
659
} else {
760
fprintf(stderr, "Mandos plugin mandos-client: "
761
"Connection to: %s, port %" PRIu16 "\n", ip, port);
660
fprintf(stderr, "Connection to: %s, port %" PRIu16 "\n", ip,
661
port);
762
662
}
763
663
char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
764
664
INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
771
671
sizeof(addrstr));
772
672
}
773
673
if(pcret == NULL){
774
perror_plus("inet_ntop");
674
perror("inet_ntop");
775
675
} else {
776
676
if(strcmp(addrstr, ip) != 0){
777
fprintf(stderr, "Mandos plugin mandos-client: "
778
"Canonical address form: %s\n", addrstr);
677
fprintf(stderr, "Canonical address form: %s\n", addrstr);
779
678
}
780
679
}
781
680
}
793
692
if(ret < 0){
794
693
if ((errno != ECONNREFUSED and errno != ENETUNREACH) or debug){
795
694
int e = errno;
796
perror_plus("connect");
695
perror("connect");
797
696
errno = e;
798
697
}
799
698
goto mandos_end;
809
708
while(true){
810
709
size_t out_size = strlen(out);
811
710
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
812
out_size - written));
711
out_size - written));
813
712
if(ret == -1){
814
713
int e = errno;
815
perror_plus("write");
714
perror("write");
816
715
errno = e;
817
716
goto mandos_end;
818
717
}
835
734
}
836
735
837
736
if(debug){
838
fprintf(stderr, "Mandos plugin mandos-client: "
839
"Establishing TLS session with %s\n", ip);
737
fprintf(stderr, "Establishing TLS session with %s\n", ip);
840
738
}
841
739
842
740
if(quit_now){
844
742
goto mandos_end;
845
743
}
846
744
847
/* Spurious warning from -Wint-to-pointer-cast */
848
745
gnutls_transport_set_ptr(session, (gnutls_transport_ptr_t) tcp_sd);
849
746
850
747
if(quit_now){
862
759
863
760
if(ret != GNUTLS_E_SUCCESS){
864
761
if(debug){
865
fprintf(stderr, "Mandos plugin mandos-client: "
866
"*** GnuTLS Handshake failed ***\n");
762
fprintf(stderr, "*** GnuTLS Handshake failed ***\n");
867
763
gnutls_perror(ret);
868
764
}
869
765
errno = EPROTO;
873
769
/* Read OpenPGP packet that contains the wanted password */
874
770
875
771
if(debug){
876
fprintf(stderr, "Mandos plugin mandos-client: "
877
"Retrieving OpenPGP encrypted password from %s\n", ip);
772
fprintf(stderr, "Retrieving OpenPGP encrypted password from %s\n",
773
ip);
878
774
}
879
775
880
776
while(true){
885
781
}
886
782
887
783
buffer_capacity = incbuffer(&buffer, buffer_length,
888
buffer_capacity);
784
buffer_capacity);
889
785
if(buffer_capacity == 0){
890
786
int e = errno;
891
perror_plus("incbuffer");
787
perror("incbuffer");
892
788
errno = e;
893
789
goto mandos_end;
894
790
}
918
814
}
919
815
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
920
816
if(ret < 0){
921
fprintf(stderr, "Mandos plugin mandos-client: "
922
"*** GnuTLS Re-handshake failed ***\n");
817
fprintf(stderr, "*** GnuTLS Re-handshake failed ***\n");
923
818
gnutls_perror(ret);
924
819
errno = EPROTO;
925
820
goto mandos_end;
926
821
}
927
822
break;
928
823
default:
929
fprintf(stderr, "Mandos plugin mandos-client: "
930
"Unknown error while reading data from"
824
fprintf(stderr, "Unknown error while reading data from"
931
825
" encrypted session with Mandos server\n");
932
826
gnutls_bye(session, GNUTLS_SHUT_RDWR);
933
827
errno = EIO;
939
833
}
940
834
941
835
if(debug){
942
fprintf(stderr, "Mandos plugin mandos-client: "
943
"Closing TLS session\n");
836
fprintf(stderr, "Closing TLS session\n");
944
837
}
945
838
946
839
if(quit_now){
958
851
959
852
if(buffer_length > 0){
960
853
ssize_t decrypted_buffer_size;
961
decrypted_buffer_size = pgp_packet_decrypt(buffer, buffer_length,
854
decrypted_buffer_size = pgp_packet_decrypt(buffer,
855
buffer_length,
962
856
&decrypted_buffer);
963
857
if(decrypted_buffer_size >= 0){
964
858
975
869
if(ret == 0 and ferror(stdout)){
976
870
int e = errno;
977
871
if(debug){
978
fprintf(stderr, "Mandos plugin mandos-client: "
979
"Error writing encrypted data: %s\n",
872
fprintf(stderr, "Error writing encrypted data: %s\n",
980
873
strerror(errno));
981
874
}
982
875
errno = e;
1002
895
if(e == 0){
1003
896
e = errno;
1004
897
}
1005
perror_plus("close");
898
perror("close");
1006
899
}
1007
900
gnutls_deinit(session);
1008
errno = e;
1009
901
if(quit_now){
1010
errno = EINTR;
902
e = EINTR;
1011
903
retval = -1;
1012
904
}
905
errno = e;
1013
906
}
1014
907
return retval;
1015
908
}
1040
933
switch(event){
1041
934
default:
1042
935
case AVAHI_RESOLVER_FAILURE:
1043
fprintf(stderr, "Mandos plugin mandos-client: "
1044
"(Avahi Resolver) Failed to resolve service '%s'"
936
fprintf(stderr, "(Avahi Resolver) Failed to resolve service '%s'"
1045
937
" of type '%s' in domain '%s': %s\n", name, type, domain,
1046
938
avahi_strerror(avahi_server_errno(mc.server)));
1047
939
break;
1051
943
char ip[AVAHI_ADDRESS_STR_MAX];
1052
944
avahi_address_snprint(ip, sizeof(ip), address);
1053
945
if(debug){
1054
fprintf(stderr, "Mandos plugin mandos-client: "
1055
"Mandos server \"%s\" found on %s (%s, %"
946
fprintf(stderr, "Mandos server \"%s\" found on %s (%s, %"
1056
947
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
1057
948
ip, (intmax_t)interface, port);
1058
949
}
1060
951
avahi_proto_to_af(proto));
1061
952
if(ret == 0){
1062
953
avahi_simple_poll_quit(mc.simple_poll);
1063
} else {
1064
ret = add_server(ip, port, interface,
1065
avahi_proto_to_af(proto));
1066
954
}
1067
955
}
1068
956
}
1092
980
default:
1093
981
case AVAHI_BROWSER_FAILURE:
1094
982
1095
fprintf(stderr, "Mandos plugin mandos-client: "
1096
"(Avahi browser) %s\n",
983
fprintf(stderr, "(Avahi browser) %s\n",
1097
984
avahi_strerror(avahi_server_errno(mc.server)));
1098
985
avahi_simple_poll_quit(mc.simple_poll);
1099
986
return;
1107
994
if(avahi_s_service_resolver_new(mc.server, interface, protocol,
1108
995
name, type, domain, protocol, 0,
1109
996
resolve_callback, NULL) == NULL)
1110
fprintf(stderr, "Mandos plugin mandos-client: "
1111
"Avahi: Failed to resolve service '%s': %s\n",
997
fprintf(stderr, "Avahi: Failed to resolve service '%s': %s\n",
1112
998
name, avahi_strerror(avahi_server_errno(mc.server)));
1113
999
break;
1114
1000
1118
1004
case AVAHI_BROWSER_ALL_FOR_NOW:
1119
1005
case AVAHI_BROWSER_CACHE_EXHAUSTED:
1120
1006
if(debug){
1121
fprintf(stderr, "Mandos plugin mandos-client: "
1122
"No Mandos server found, still searching...\n");
1007
fprintf(stderr, "No Mandos server found, still searching...\n");
1123
1008
}
1124
1009
break;
1125
1010
}
1126
1011
}
1127
1012
1128
/* Signal handler that stops main loop after SIGTERM */
1013
/* stop main loop after sigterm has been called */
1129
1014
static void handle_sigterm(int sig){
1130
1015
if(quit_now){
1131
1016
return;
1133
1018
quit_now = 1;
1134
1019
signal_received = sig;
1135
1020
int old_errno = errno;
1136
/* set main loop to exit */
1137
1021
if(mc.simple_poll != NULL){
1138
1022
avahi_simple_poll_quit(mc.simple_poll);
1139
1023
}
1140
1024
errno = old_errno;
1141
1025
}
1142
1026
1143
bool get_flags(const char *ifname, struct ifreq *ifr){
1144
int ret;
1145
1146
int s = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1147
if(s < 0){
1148
perror_plus("socket");
1149
return false;
1150
}
1151
strcpy(ifr->ifr_name, ifname);
1152
ret = ioctl(s, SIOCGIFFLAGS, ifr);
1153
if(ret == -1){
1027
/*
1028
* This function determines if a directory entry in /sys/class/net
1029
* corresponds to an acceptable network device.
1030
* (This function is passed to scandir(3) as a filter function.)
1031
*/
1032
int good_interface(const struct dirent *if_entry){
1033
ssize_t ssret;
1034
char *flagname = NULL;
1035
int ret = asprintf(&flagname, "%s/%s/flags", sys_class_net,
1036
if_entry->d_name);
1037
if(ret < 0){
1038
perror("asprintf");
1039
return 0;
1040
}
1041
if(if_entry->d_name[0] == '.'){
1042
return 0;
1043
}
1044
int flags_fd = (int)TEMP_FAILURE_RETRY(open(flagname, O_RDONLY));
1045
if(flags_fd == -1){
1046
perror("open");
1047
return 0;
1048
}
1049
typedef short ifreq_flags; /* ifreq.ifr_flags in netdevice(7) */
1050
/* read line from flags_fd */
1051
ssize_t to_read = (sizeof(ifreq_flags)*2)+3; /* "0x1003\n" */
1052
char *flagstring = malloc((size_t)to_read+1); /* +1 for final \0 */
1053
flagstring[(size_t)to_read] = '\0';
1054
if(flagstring == NULL){
1055
perror("malloc");
1056
close(flags_fd);
1057
return 0;
1058
}
1059
while(to_read > 0){
1060
ssret = (ssize_t)TEMP_FAILURE_RETRY(read(flags_fd, flagstring,
1061
(size_t)to_read));
1062
if(ssret == -1){
1063
perror("read");
1064
free(flagstring);
1065
close(flags_fd);
1066
return 0;
1067
}
1068
to_read -= ssret;
1069
if(ssret == 0){
1070
break;
1071
}
1072
}
1073
close(flags_fd);
1074
intmax_t tmpmax;
1075
char *tmp;
1076
errno = 0;
1077
tmpmax = strtoimax(flagstring, &tmp, 0);
1078
if(errno != 0 or tmp == flagstring or (*tmp != '\0'
1079
and not (isspace(*tmp)))
1080
or tmpmax != (ifreq_flags)tmpmax){
1154
1081
if(debug){
1155
perror_plus("ioctl SIOCGIFFLAGS");
1082
fprintf(stderr, "Invalid flags \"%s\" for interface \"%s\"\n",
1083
flagstring, if_entry->d_name);
1156
1084
}
1157
return false;
1085
free(flagstring);
1086
return 0;
1158
1087
}
1159
return true;
1160
}
1161
1162
bool good_flags(const char *ifname, const struct ifreq *ifr){
1163
1088
free(flagstring);
1089
ifreq_flags flags = (ifreq_flags)tmpmax;
1164
1090
/* Reject the loopback device */
1165
if(ifr->ifr_flags & IFF_LOOPBACK){
1091
if(flags & IFF_LOOPBACK){
1166
1092
if(debug){
1167
fprintf(stderr, "Mandos plugin mandos-client: "
1168
"Rejecting loopback interface \"%s\"\n", ifname);
1093
fprintf(stderr, "Rejecting loopback interface \"%s\"\n",
1094
if_entry->d_name);
1169
1095
}
1170
return false;
1096
return 0;
1171
1097
}
1172
1098
/* Accept point-to-point devices only if connect_to is specified */
1173
if(connect_to != NULL and (ifr->ifr_flags & IFF_POINTOPOINT)){
1099
if(connect_to != NULL and (flags & IFF_POINTOPOINT)){
1174
1100
if(debug){
1175
fprintf(stderr, "Mandos plugin mandos-client: "
1176
"Accepting point-to-point interface \"%s\"\n", ifname);
1101
fprintf(stderr, "Accepting point-to-point interface \"%s\"\n",
1102
if_entry->d_name);
1177
1103
}
1178
return true;
1104
return 1;
1179
1105
}
1180
1106
/* Otherwise, reject non-broadcast-capable devices */
1181
if(not (ifr->ifr_flags & IFF_BROADCAST)){
1182
if(debug){
1183
fprintf(stderr, "Mandos plugin mandos-client: "
1184
"Rejecting non-broadcast interface \"%s\"\n", ifname);
1185
}
1186
return false;
1187
}
1188
/* Reject non-ARP interfaces (including dummy interfaces) */
1189
if(ifr->ifr_flags & IFF_NOARP){
1190
if(debug){
1191
fprintf(stderr, "Mandos plugin mandos-client: "
1192
"Rejecting non-ARP interface \"%s\"\n", ifname);
1193
}
1194
return false;
1195
}
1196
1107
if(not (flags & IFF_BROADCAST)){
1108
if(debug){
1109
fprintf(stderr, "Rejecting non-broadcast interface \"%s\"\n",
1110
if_entry->d_name);
1111
}
1112
return 0;
1113
}
1197
1114
/* Accept this device */
1198
1115
if(debug){
1199
fprintf(stderr, "Mandos plugin mandos-client: "
1200
"Interface \"%s\" is good\n", ifname);
1201
}
1202
return true;
1203
}
1204
1205
/*
1206
* This function determines if a directory entry in /sys/class/net
1207
* corresponds to an acceptable network device.
1208
* (This function is passed to scandir(3) as a filter function.)
1209
*/
1210
int good_interface(const struct dirent *if_entry){
1211
if(if_entry->d_name[0] == '.'){
1212
return 0;
1213
}
1214
1215
struct ifreq ifr;
1216
if(not get_flags(if_entry->d_name, &ifr)){
1217
if(debug){
1218
fprintf(stderr, "Mandos plugin mandos-client: "
1219
"Failed to get flags for interface \"%s\"\n",
1220
if_entry->d_name);
1221
}
1222
return 0;
1223
}
1224
1225
if(not good_flags(if_entry->d_name, &ifr)){
1226
return 0;
1227
}
1228
return 1;
1229
}
1230
1231
/*
1232
* This function determines if a directory entry in /sys/class/net
1233
* corresponds to an acceptable network device which is up.
1234
* (This function is passed to scandir(3) as a filter function.)
1235
*/
1236
int up_interface(const struct dirent *if_entry){
1237
if(if_entry->d_name[0] == '.'){
1238
return 0;
1239
}
1240
1241
struct ifreq ifr;
1242
if(not get_flags(if_entry->d_name, &ifr)){
1243
if(debug){
1244
fprintf(stderr, "Mandos plugin mandos-client: "
1245
"Failed to get flags for interface \"%s\"\n",
1246
if_entry->d_name);
1247
}
1248
return 0;
1249
}
1250
1251
/* Reject down interfaces */
1252
if(not (ifr.ifr_flags & IFF_UP)){
1253
if(debug){
1254
fprintf(stderr, "Mandos plugin mandos-client: "
1255
"Rejecting down interface \"%s\"\n",
1256
if_entry->d_name);
1257
}
1258
return 0;
1259
}
1260
1261
/* Reject non-running interfaces */
1262
if(not (ifr.ifr_flags & IFF_RUNNING)){
1263
if(debug){
1264
fprintf(stderr, "Mandos plugin mandos-client: "
1265
"Rejecting non-running interface \"%s\"\n",
1266
if_entry->d_name);
1267
}
1268
return 0;
1269
}
1270
1271
if(not good_flags(if_entry->d_name, &ifr)){
1272
return 0;
1273
}
1274
return 1;
1275
}
1276
1277
int notdotentries(const struct dirent *direntry){
1278
/* Skip "." and ".." */
1279
if(direntry->d_name[0] == '.'
1280
and (direntry->d_name[1] == '\0'
1281
or (direntry->d_name[1] == '.'
1282
and direntry->d_name[2] == '\0'))){
1283
return 0;
1284
}
1285
return 1;
1286
}
1287
1288
/* Is this directory entry a runnable program? */
1289
int runnable_hook(const struct dirent *direntry){
1290
int ret;
1291
size_t sret;
1292
struct stat st;
1293
1294
if((direntry->d_name)[0] == '\0'){
1295
/* Empty name? */
1296
return 0;
1297
}
1298
1299
sret = strspn(direntry->d_name, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1300
"abcdefghijklmnopqrstuvwxyz"
1301
"0123456789"
1302
"_-");
1303
if((direntry->d_name)[sret] != '\0'){
1304
/* Contains non-allowed characters */
1305
if(debug){
1306
fprintf(stderr, "Mandos plugin mandos-client: "
1307
"Ignoring hook \"%s\" with bad name\n",
1308
direntry->d_name);
1309
}
1310
return 0;
1311
}
1312
1313
char *fullname = NULL;
1314
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1315
if(ret < 0){
1316
perror_plus("asprintf");
1317
return 0;
1318
}
1319
1320
ret = stat(fullname, &st);
1321
if(ret == -1){
1322
if(debug){
1323
perror_plus("Could not stat hook");
1324
}
1325
return 0;
1326
}
1327
if(not (S_ISREG(st.st_mode))){
1328
/* Not a regular file */
1329
if(debug){
1330
fprintf(stderr, "Mandos plugin mandos-client: "
1331
"Ignoring hook \"%s\" - not a file\n",
1332
direntry->d_name);
1333
}
1334
return 0;
1335
}
1336
if(not (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))){
1337
/* Not executable */
1338
if(debug){
1339
fprintf(stderr, "Mandos plugin mandos-client: "
1340
"Ignoring hook \"%s\" - not executable\n",
1341
direntry->d_name);
1342
}
1343
return 0;
1344
}
1345
return 1;
1346
}
1347
1348
int avahi_loop_with_timeout(AvahiSimplePoll *s, int retry_interval){
1349
int ret;
1350
struct timespec now;
1351
struct timespec waited_time;
1352
intmax_t block_time;
1353
1354
while(true){
1355
if(mc.current_server == NULL){
1356
if (debug){
1357
fprintf(stderr, "Mandos plugin mandos-client: "
1358
"Wait until first server is found. No timeout!\n");
1359
}
1360
ret = avahi_simple_poll_iterate(s, -1);
1361
} else {
1362
if (debug){
1363
fprintf(stderr, "Mandos plugin mandos-client: "
1364
"Check current_server if we should run it,"
1365
" or wait\n");
1366
}
1367
/* the current time */
1368
ret = clock_gettime(CLOCK_MONOTONIC, &now);
1369
if(ret == -1){
1370
perror_plus("clock_gettime");
1371
return -1;
1372
}
1373
/* Calculating in ms how long time between now and server
1374
who we visted longest time ago. Now - last seen. */
1375
waited_time.tv_sec = (now.tv_sec
1376
- mc.current_server->last_seen.tv_sec);
1377
waited_time.tv_nsec = (now.tv_nsec
1378
- mc.current_server->last_seen.tv_nsec);
1379
/* total time is 10s/10,000ms.
1380
Converting to s from ms by dividing by 1,000,
1381
and ns to ms by dividing by 1,000,000. */
1382
block_time = ((retry_interval
1383
- ((intmax_t)waited_time.tv_sec * 1000))
1384
- ((intmax_t)waited_time.tv_nsec / 1000000));
1385
1386
if (debug){
1387
fprintf(stderr, "Mandos plugin mandos-client: "
1388
"Blocking for %" PRIdMAX " ms\n", block_time);
1389
}
1390
1391
if(block_time <= 0){
1392
ret = start_mandos_communication(mc.current_server->ip,
1393
mc.current_server->port,
1394
mc.current_server->if_index,
1395
mc.current_server->af);
1396
if(ret == 0){
1397
avahi_simple_poll_quit(mc.simple_poll);
1398
return 0;
1399
}
1400
ret = clock_gettime(CLOCK_MONOTONIC,
1401
&mc.current_server->last_seen);
1402
if(ret == -1){
1403
perror_plus("clock_gettime");
1404
return -1;
1405
}
1406
mc.current_server = mc.current_server->next;
1407
block_time = 0; /* Call avahi to find new Mandos
1408
servers, but don't block */
1409
}
1410
1411
ret = avahi_simple_poll_iterate(s, (int)block_time);
1412
}
1413
if(ret != 0){
1414
if (ret > 0 or errno != EINTR){
1415
return (ret != 1) ? ret : 0;
1416
}
1417
}
1418
}
1116
fprintf(stderr, "Interface \"%s\" is acceptable\n",
1117
if_entry->d_name);
1118
}
1119
return 1;
1419
1120
}
1420
1121
1421
1122
int main(int argc, char *argv[]){
1440
1141
bool gnutls_initialized = false;
1441
1142
bool gpgme_initialized = false;
1442
1143
float delay = 2.5f;
1443
double retry_interval = 10; /* 10s between trying a server and
1444
retrying the same server again */
1445
1144
1446
1145
struct sigaction old_sigterm_action = { .sa_handler = SIG_DFL };
1447
1146
struct sigaction sigterm_action = { .sa_handler = handle_sigterm };
1453
1152
errno = 0;
1454
1153
ret = setgid(gid);
1455
1154
if(ret == -1){
1456
perror_plus("setgid");
1155
perror("setgid");
1457
1156
}
1458
1157
1459
1158
/* Lower user privileges (temporarily) */
1460
1159
errno = 0;
1461
1160
ret = seteuid(uid);
1462
1161
if(ret == -1){
1463
perror_plus("seteuid");
1162
perror("seteuid");
1464
1163
}
1465
1164
1466
1165
if(quit_now){
1501
1200
.arg = "SECONDS",
1502
1201
.doc = "Maximum delay to wait for interface startup",
1503
1202
.group = 2 },
1504
{ .name = "retry", .key = 132,
1505
.arg = "SECONDS",
1506
.doc = "Retry interval used when denied by the mandos server",
1507
.group = 2 },
1508
{ .name = "network-hook-dir", .key = 133,
1509
.arg = "DIR",
1510
.doc = "Directory where network hooks are located",
1511
.group = 2 },
1512
1203
/*
1513
1204
* These reproduce what we would get without ARGP_NO_HELP
1514
1205
*/
1558
1249
if(errno != 0 or tmp == arg or *tmp != '\0'){
1559
1250
argp_error(state, "Bad delay");
1560
1251
}
1561
case 132: /* --retry */
1562
errno = 0;
1563
retry_interval = strtod(arg, &tmp);
1564
if(errno != 0 or tmp == arg or *tmp != '\0'
1565
or (retry_interval * 1000) > INT_MAX
1566
or retry_interval < 0){
1567
argp_error(state, "Bad retry interval");
1568
}
1569
break;
1570
case 133: /* --network-hook-dir */
1571
hookdir = arg;
1572
1252
break;
1573
1253
/*
1574
1254
* These reproduce what we would get without ARGP_NO_HELP
1581
1261
argp_state_help(state, state->out_stream,
1582
1262
ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);
1583
1263
case 'V': /* --version */
1584
fprintf(state->out_stream, "Mandos plugin mandos-client: ");
1585
1264
fprintf(state->out_stream, "%s\n", argp_program_version);
1586
1265
exit(argp_err_exit_status);
1587
1266
break;
1603
1282
case ENOMEM:
1604
1283
default:
1605
1284
errno = ret;
1606
perror_plus("argp_parse");
1285
perror("argp_parse");
1607
1286
exitcode = EX_OSERR;
1608
1287
goto end;
1609
1288
case EINVAL:
1611
1290
goto end;
1612
1291
}
1613
1292
}
1614
1615
{
1616
/* Work around Debian bug #633582:
1617
<http://bugs.debian.org/633582> */
1618
struct stat st;
1619
1620
/* Re-raise priviliges */
1621
errno = 0;
1622
ret = seteuid(0);
1623
if(ret == -1){
1624
perror_plus("seteuid");
1625
}
1626
1627
if(strcmp(seckey, PATHDIR "/" SECKEY) == 0){
1628
int seckey_fd = open(seckey, O_RDONLY);
1629
if(seckey_fd == -1){
1630
perror_plus("open");
1631
} else {
1632
ret = (int)TEMP_FAILURE_RETRY(fstat(seckey_fd, &st));
1633
if(ret == -1){
1634
perror_plus("fstat");
1635
} else {
1636
if(S_ISREG(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
1637
ret = fchown(seckey_fd, uid, gid);
1638
if(ret == -1){
1639
perror_plus("fchown");
1640
}
1641
}
1642
}
1643
TEMP_FAILURE_RETRY(close(seckey_fd));
1644
}
1645
}
1646
1647
if(strcmp(pubkey, PATHDIR "/" PUBKEY) == 0){
1648
int pubkey_fd = open(pubkey, O_RDONLY);
1649
if(pubkey_fd == -1){
1650
perror_plus("open");
1651
} else {
1652
ret = (int)TEMP_FAILURE_RETRY(fstat(pubkey_fd, &st));
1653
if(ret == -1){
1654
perror_plus("fstat");
1655
} else {
1656
if(S_ISREG(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
1657
ret = fchown(pubkey_fd, uid, gid);
1658
if(ret == -1){
1659
perror_plus("fchown");
1660
}
1661
}
1662
}
1663
TEMP_FAILURE_RETRY(close(pubkey_fd));
1664
}
1665
}
1666
1667
/* Lower privileges */
1668
errno = 0;
1669
ret = seteuid(uid);
1670
if(ret == -1){
1671
perror_plus("seteuid");
1672
}
1673
}
1674
1675
/* Find network hooks and run them */
1676
{
1677
struct dirent **direntries;
1678
struct dirent *direntry;
1679
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1680
alphasort);
1681
if(numhooks == -1){
1682
perror_plus("scandir");
1683
} else {
1684
int devnull = open("/dev/null", O_RDONLY);
1685
for(int i = 0; i < numhooks; i++){
1686
direntry = direntries[0];
1687
char *fullname = NULL;
1688
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1689
if(ret < 0){
1690
perror_plus("asprintf");
1691
continue;
1692
}
1693
pid_t hook_pid = fork();
1694
if(hook_pid == 0){
1695
/* Child */
1696
dup2(devnull, STDIN_FILENO);
1697
close(devnull);
1698
dup2(STDERR_FILENO, STDOUT_FILENO);
1699
ret = setenv("MANDOSNETHOOKDIR", hookdir, 1);
1700
if(ret == -1){
1701
perror_plus("setenv");
1702
exit(1);
1703
}
1704
ret = setenv("DEVICE", interface, 1);
1705
if(ret == -1){
1706
perror_plus("setenv");
1707
exit(1);
1708
}
1709
ret = setenv("VERBOSE", debug ? "1" : "0", 1);
1710
if(ret == -1){
1711
perror_plus("setenv");
1712
exit(1);
1713
}
1714
ret = setenv("MODE", "start", 1);
1715
if(ret == -1){
1716
perror_plus("setenv");
1717
exit(1);
1718
}
1719
char *delaystring;
1720
ret = asprintf(&delaystring, "%f", delay);
1721
if(ret == -1){
1722
perror_plus("asprintf");
1723
exit(1);
1724
}
1725
ret = setenv("DELAY", delaystring, 1);
1726
if(ret == -1){
1727
free(delaystring);
1728
perror_plus("setenv");
1729
exit(1);
1730
}
1731
free(delaystring);
1732
ret = execl(fullname, direntry->d_name, "start", NULL);
1733
perror_plus("execl");
1734
} else {
1735
int status;
1736
if(TEMP_FAILURE_RETRY(waitpid(hook_pid, &status, 0)) == -1){
1737
perror_plus("waitpid");
1738
free(fullname);
1739
continue;
1740
}
1741
if(WIFEXITED(status)){
1742
if(WEXITSTATUS(status) != 0){
1743
fprintf(stderr, "Mandos plugin mandos-client: "
1744
"Warning: network hook \"%s\" exited"
1745
" with status %d\n", direntry->d_name,
1746
WEXITSTATUS(status));
1747
free(fullname);
1748
continue;
1749
}
1750
} else if(WIFSIGNALED(status)){
1751
fprintf(stderr, "Mandos plugin mandos-client: "
1752
"Warning: network hook \"%s\" died by"
1753
" signal %d\n", direntry->d_name,
1754
WTERMSIG(status));
1755
free(fullname);
1756
continue;
1757
} else {
1758
fprintf(stderr, "Mandos plugin mandos-client: "
1759
"Warning: network hook \"%s\" crashed\n",
1760
direntry->d_name);
1761
free(fullname);
1762
continue;
1763
}
1764
}
1765
free(fullname);
1766
if(quit_now){
1767
goto end;
1768
}
1769
}
1770
close(devnull);
1771
}
1772
}
1773
1293
1774
1294
if(not debug){
1775
1295
avahi_set_log_function(empty_log);
1776
1296
}
1777
1297
1778
1298
if(interface[0] == '\0'){
1779
1299
struct dirent **direntries;
1780
/* First look for interfaces that are up */
1781
ret = scandir(sys_class_net, &direntries, up_interface,
1300
ret = scandir(sys_class_net, &direntries, good_interface,
1782
1301
alphasort);
1783
if(ret == 0){
1784
/* No up interfaces, look for any good interfaces */
1785
free(direntries);
1786
ret = scandir(sys_class_net, &direntries, good_interface,
1787
alphasort);
1788
}
1789
1302
if(ret >= 1){
1790
/* Pick the first interface returned */
1303
/* Pick the first good interface */
1791
1304
interface = strdup(direntries[0]->d_name);
1792
1305
if(debug){
1793
fprintf(stderr, "Mandos plugin mandos-client: "
1794
"Using interface \"%s\"\n", interface);
1306
fprintf(stderr, "Using interface \"%s\"\n", interface);
1795
1307
}
1796
1308
if(interface == NULL){
1797
perror_plus("malloc");
1309
perror("malloc");
1798
1310
free(direntries);
1799
1311
exitcode = EXIT_FAILURE;
1800
1312
goto end;
1802
1314
free(direntries);
1803
1315
} else {
1804
1316
free(direntries);
1805
fprintf(stderr, "Mandos plugin mandos-client: "
1806
"Could not find a network interface\n");
1317
fprintf(stderr, "Could not find a network interface\n");
1807
1318
exitcode = EXIT_FAILURE;
1808
1319
goto end;
1809
1320
}
1815
1326
srand((unsigned int) time(NULL));
1816
1327
mc.simple_poll = avahi_simple_poll_new();
1817
1328
if(mc.simple_poll == NULL){
1818
fprintf(stderr, "Mandos plugin mandos-client: "
1819
"Avahi: Failed to create simple poll object.\n");
1329
fprintf(stderr, "Avahi: Failed to create simple poll object.\n");
1820
1330
exitcode = EX_UNAVAILABLE;
1821
1331
goto end;
1822
1332
}
1824
1334
sigemptyset(&sigterm_action.sa_mask);
1825
1335
ret = sigaddset(&sigterm_action.sa_mask, SIGINT);
1826
1336
if(ret == -1){
1827
perror_plus("sigaddset");
1337
perror("sigaddset");
1828
1338
exitcode = EX_OSERR;
1829
1339
goto end;
1830
1340
}
1831
1341
ret = sigaddset(&sigterm_action.sa_mask, SIGHUP);
1832
1342
if(ret == -1){
1833
perror_plus("sigaddset");
1343
perror("sigaddset");
1834
1344
exitcode = EX_OSERR;
1835
1345
goto end;
1836
1346
}
1837
1347
ret = sigaddset(&sigterm_action.sa_mask, SIGTERM);
1838
1348
if(ret == -1){
1839
perror_plus("sigaddset");
1349
perror("sigaddset");
1840
1350
exitcode = EX_OSERR;
1841
1351
goto end;
1842
1352
}
1846
1356
*/
1847
1357
ret = sigaction(SIGINT, NULL, &old_sigterm_action);
1848
1358
if(ret == -1){
1849
perror_plus("sigaction");
1359
perror("sigaction");
1850
1360
return EX_OSERR;
1851
1361
}
1852
1362
if(old_sigterm_action.sa_handler != SIG_IGN){
1853
1363
ret = sigaction(SIGINT, &sigterm_action, NULL);
1854
1364
if(ret == -1){
1855
perror_plus("sigaction");
1365
perror("sigaction");
1856
1366
exitcode = EX_OSERR;
1857
1367
goto end;
1858
1368
}
1859
1369
}
1860
1370
ret = sigaction(SIGHUP, NULL, &old_sigterm_action);
1861
1371
if(ret == -1){
1862
perror_plus("sigaction");
1372
perror("sigaction");
1863
1373
return EX_OSERR;
1864
1374
}
1865
1375
if(old_sigterm_action.sa_handler != SIG_IGN){
1866
1376
ret = sigaction(SIGHUP, &sigterm_action, NULL);
1867
1377
if(ret == -1){
1868
perror_plus("sigaction");
1378
perror("sigaction");
1869
1379
exitcode = EX_OSERR;
1870
1380
goto end;
1871
1381
}
1872
1382
}
1873
1383
ret = sigaction(SIGTERM, NULL, &old_sigterm_action);
1874
1384
if(ret == -1){
1875
perror_plus("sigaction");
1385
perror("sigaction");
1876
1386
return EX_OSERR;
1877
1387
}
1878
1388
if(old_sigterm_action.sa_handler != SIG_IGN){
1879
1389
ret = sigaction(SIGTERM, &sigterm_action, NULL);
1880
1390
if(ret == -1){
1881
perror_plus("sigaction");
1391
perror("sigaction");
1882
1392
exitcode = EX_OSERR;
1883
1393
goto end;
1884
1394
}
1888
1398
if(strcmp(interface, "none") != 0){
1889
1399
if_index = (AvahiIfIndex) if_nametoindex(interface);
1890
1400
if(if_index == 0){
1891
fprintf(stderr, "Mandos plugin mandos-client: "
1892
"No such interface: \"%s\"\n", interface);
1401
fprintf(stderr, "No such interface: \"%s\"\n", interface);
1893
1402
exitcode = EX_UNAVAILABLE;
1894
1403
goto end;
1895
1404
}
1902
1411
errno = 0;
1903
1412
ret = seteuid(0);
1904
1413
if(ret == -1){
1905
perror_plus("seteuid");
1414
perror("seteuid");
1906
1415
}
1907
1416
1908
1417
#ifdef __linux__
1912
1421
bool restore_loglevel = true;
1913
1422
if(ret == -1){
1914
1423
restore_loglevel = false;
1915
perror_plus("klogctl");
1424
perror("klogctl");
1916
1425
}
1917
1426
#endif /* __linux__ */
1918
1427
1919
1428
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1920
1429
if(sd < 0){
1921
perror_plus("socket");
1430
perror("socket");
1922
1431
exitcode = EX_OSERR;
1923
1432
#ifdef __linux__
1924
1433
if(restore_loglevel){
1925
1434
ret = klogctl(7, NULL, 0);
1926
1435
if(ret == -1){
1927
perror_plus("klogctl");
1436
perror("klogctl");
1928
1437
}
1929
1438
}
1930
1439
#endif /* __linux__ */
1932
1441
errno = 0;
1933
1442
ret = seteuid(uid);
1934
1443
if(ret == -1){
1935
perror_plus("seteuid");
1444
perror("seteuid");
1936
1445
}
1937
1446
goto end;
1938
1447
}
1939
1448
strcpy(network.ifr_name, interface);
1940
1449
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1941
1450
if(ret == -1){
1942
perror_plus("ioctl SIOCGIFFLAGS");
1451
perror("ioctl SIOCGIFFLAGS");
1943
1452
#ifdef __linux__
1944
1453
if(restore_loglevel){
1945
1454
ret = klogctl(7, NULL, 0);
1946
1455
if(ret == -1){
1947
perror_plus("klogctl");
1456
perror("klogctl");
1948
1457
}
1949
1458
}
1950
1459
#endif /* __linux__ */
1953
1462
errno = 0;
1954
1463
ret = seteuid(uid);
1955
1464
if(ret == -1){
1956
perror_plus("seteuid");
1465
perror("seteuid");
1957
1466
}
1958
1467
goto end;
1959
1468
}
1963
1472
ret = ioctl(sd, SIOCSIFFLAGS, &network);
1964
1473
if(ret == -1){
1965
1474
take_down_interface = false;
1966
perror_plus("ioctl SIOCSIFFLAGS +IFF_UP");
1475
perror("ioctl SIOCSIFFLAGS +IFF_UP");
1967
1476
exitcode = EX_OSERR;
1968
1477
#ifdef __linux__
1969
1478
if(restore_loglevel){
1970
1479
ret = klogctl(7, NULL, 0);
1971
1480
if(ret == -1){
1972
perror_plus("klogctl");
1481
perror("klogctl");
1973
1482
}
1974
1483
}
1975
1484
#endif /* __linux__ */
1977
1486
errno = 0;
1978
1487
ret = seteuid(uid);
1979
1488
if(ret == -1){
1980
perror_plus("seteuid");
1489
perror("seteuid");
1981
1490
}
1982
1491
goto end;
1983
1492
}
1984
1493
}
1985
/* Sleep checking until interface is running.
1986
Check every 0.25s, up to total time of delay */
1494
/* sleep checking until interface is running */
1987
1495
for(int i=0; i < delay * 4; i++){
1988
1496
ret = ioctl(sd, SIOCGIFFLAGS, &network);
1989
1497
if(ret == -1){
1990
perror_plus("ioctl SIOCGIFFLAGS");
1498
perror("ioctl SIOCGIFFLAGS");
1991
1499
} else if(network.ifr_flags & IFF_RUNNING){
1992
1500
break;
1993
1501
}
1994
1502
struct timespec sleeptime = { .tv_nsec = 250000000 };
1995
1503
ret = nanosleep(&sleeptime, NULL);
1996
1504
if(ret == -1 and errno != EINTR){
1997
perror_plus("nanosleep");
1505
perror("nanosleep");
1998
1506
}
1999
1507
}
2000
1508
if(not take_down_interface){
2001
1509
/* We won't need the socket anymore */
2002
1510
ret = (int)TEMP_FAILURE_RETRY(close(sd));
2003
1511
if(ret == -1){
2004
perror_plus("close");
1512
perror("close");
2005
1513
}
2006
1514
}
2007
1515
#ifdef __linux__
2009
1517
/* Restores kernel loglevel to default */
2010
1518
ret = klogctl(7, NULL, 0);
2011
1519
if(ret == -1){
2012
perror_plus("klogctl");
1520
perror("klogctl");
2013
1521
}
2014
1522
}
2015
1523
#endif /* __linux__ */
2019
1527
/* Lower privileges */
2020
1528
ret = seteuid(uid);
2021
1529
if(ret == -1){
2022
perror_plus("seteuid");
1530
perror("seteuid");
2023
1531
}
2024
1532
} else {
2025
1533
/* Lower privileges permanently */
2026
1534
ret = setuid(uid);
2027
1535
if(ret == -1){
2028
perror_plus("setuid");
1536
perror("setuid");
2029
1537
}
2030
1538
}
2031
1539
}
2036
1544
2037
1545
ret = init_gnutls_global(pubkey, seckey);
2038
1546
if(ret == -1){
2039
fprintf(stderr, "Mandos plugin mandos-client: "
2040
"init_gnutls_global failed\n");
1547
fprintf(stderr, "init_gnutls_global failed\n");
2041
1548
exitcode = EX_UNAVAILABLE;
2042
1549
goto end;
2043
1550
} else {
2048
1555
goto end;
2049
1556
}
2050
1557
1558
tempdir_created = true;
2051
1559
if(mkdtemp(tempdir) == NULL){
2052
perror_plus("mkdtemp");
1560
tempdir_created = false;
1561
perror("mkdtemp");
2053
1562
goto end;
2054
1563
}
2055
tempdir_created = true;
2056
1564
2057
1565
if(quit_now){
2058
1566
goto end;
2059
1567
}
2060
1568
2061
1569
if(not init_gpgme(pubkey, seckey, tempdir)){
2062
fprintf(stderr, "Mandos plugin mandos-client: "
2063
"init_gpgme failed\n");
1570
fprintf(stderr, "init_gpgme failed\n");
2064
1571
exitcode = EX_UNAVAILABLE;
2065
1572
goto end;
2066
1573
} else {
2076
1583
/* (Mainly meant for debugging) */
2077
1584
char *address = strrchr(connect_to, ':');
2078
1585
if(address == NULL){
2079
fprintf(stderr, "Mandos plugin mandos-client: "
2080
"No colon in address\n");
1586
fprintf(stderr, "No colon in address\n");
2081
1587
exitcode = EX_USAGE;
2082
1588
goto end;
2083
1589
}
2091
1597
tmpmax = strtoimax(address+1, &tmp, 10);
2092
1598
if(errno != 0 or tmp == address+1 or *tmp != '\0'
2093
1599
or tmpmax != (uint16_t)tmpmax){
2094
fprintf(stderr, "Mandos plugin mandos-client: "
2095
"Bad port number\n");
1600
fprintf(stderr, "Bad port number\n");
2096
1601
exitcode = EX_USAGE;
2097
1602
goto end;
2098
1603
}
2103
1608
2104
1609
port = (uint16_t)tmpmax;
2105
1610
*address = '\0';
1611
address = connect_to;
2106
1612
/* Colon in address indicates IPv6 */
2107
1613
int af;
2108
if(strchr(connect_to, ':') != NULL){
1614
if(strchr(address, ':') != NULL){
2109
1615
af = AF_INET6;
2110
/* Accept [] around IPv6 address - see RFC 5952 */
2111
if(connect_to[0] == '[' and address[-1] == ']')
2112
{
2113
connect_to++;
2114
address[-1] = '\0';
2115
}
2116
1616
} else {
2117
1617
af = AF_INET;
2118
1618
}
2119
address = connect_to;
2120
1619
2121
1620
if(quit_now){
2122
1621
goto end;
2123
1622
}
2124
1623
2125
1624
while(not quit_now){
2126
1625
ret = start_mandos_communication(address, port, if_index, af);
2127
1626
if(quit_now or ret == 0){
2128
1627
break;
2129
1628
}
2130
if(debug){
2131
fprintf(stderr, "Mandos plugin mandos-client: "
2132
"Retrying in %d seconds\n", (int)retry_interval);
2133
}
2134
sleep((int)retry_interval);
2135
}
2136
1629
sleep(15);
1630
};
1631
2137
1632
if (not quit_now){
2138
1633
exitcode = EXIT_SUCCESS;
2139
1634
}
2140
1635
2141
1636
goto end;
2142
1637
}
2143
1638
2165
1660
2166
1661
/* Check if creating the Avahi server object succeeded */
2167
1662
if(mc.server == NULL){
2168
fprintf(stderr, "Mandos plugin mandos-client: "
2169
"Failed to create Avahi server: %s\n",
1663
fprintf(stderr, "Failed to create Avahi server: %s\n",
2170
1664
avahi_strerror(error));
2171
1665
exitcode = EX_UNAVAILABLE;
2172
1666
goto end;
2181
1675
AVAHI_PROTO_UNSPEC, "_mandos._tcp",
2182
1676
NULL, 0, browse_callback, NULL);
2183
1677
if(sb == NULL){
2184
fprintf(stderr, "Mandos plugin mandos-client: "
2185
"Failed to create service browser: %s\n",
1678
fprintf(stderr, "Failed to create service browser: %s\n",
2186
1679
avahi_strerror(avahi_server_errno(mc.server)));
2187
1680
exitcode = EX_UNAVAILABLE;
2188
1681
goto end;
2195
1688
/* Run the main loop */
2196
1689
2197
1690
if(debug){
2198
fprintf(stderr, "Mandos plugin mandos-client: "
2199
"Starting Avahi loop search\n");
2200
}
2201
2202
ret = avahi_loop_with_timeout(mc.simple_poll,
2203
(int)(retry_interval * 1000));
2204
if(debug){
2205
fprintf(stderr, "Mandos plugin mandos-client: "
2206
"avahi_loop_with_timeout exited %s\n",
2207
(ret == 0) ? "successfully" : "with error");
2208
}
1691
fprintf(stderr, "Starting Avahi loop search\n");
1692
}
1693
1694
avahi_simple_poll_loop(mc.simple_poll);
2209
1695
2210
1696
end:
2211
1697
2212
1698
if(debug){
2213
fprintf(stderr, "Mandos plugin mandos-client: "
2214
"%s exiting\n", argv[0]);
1699
fprintf(stderr, "%s exiting\n", argv[0]);
2215
1700
}
2216
1701
2217
1702
/* Cleanup things */
2233
1718
if(gpgme_initialized){
2234
1719
gpgme_release(mc.ctx);
2235
1720
}
2236
2237
/* Cleans up the circular linked list of Mandos servers the client
2238
has seen */
2239
if(mc.current_server != NULL){
2240
mc.current_server->prev->next = NULL;
2241
while(mc.current_server != NULL){
2242
server *next = mc.current_server->next;
2243
free(mc.current_server);
2244
mc.current_server = next;
2245
}
2246
}
2247
2248
/* XXX run network hooks "stop" here */
2249
1721
2250
1722
/* Take down the network interface */
2251
1723
if(take_down_interface){
2253
1725
errno = 0;
2254
1726
ret = seteuid(0);
2255
1727
if(ret == -1){
2256
perror_plus("seteuid");
1728
perror("seteuid");
2257
1729
}
2258
1730
if(geteuid() == 0){
2259
1731
ret = ioctl(sd, SIOCGIFFLAGS, &network);
2260
1732
if(ret == -1){
2261
perror_plus("ioctl SIOCGIFFLAGS");
2262
} else if(network.ifr_flags & IFF_UP){
1733
perror("ioctl SIOCGIFFLAGS");
1734
} else if(network.ifr_flags & IFF_UP) {
2263
1735
network.ifr_flags &= ~(short)IFF_UP; /* clear flag */
2264
1736
ret = ioctl(sd, SIOCSIFFLAGS, &network);
2265
1737
if(ret == -1){
2266
perror_plus("ioctl SIOCSIFFLAGS -IFF_UP");
1738
perror("ioctl SIOCSIFFLAGS -IFF_UP");
2267
1739
}
2268
1740
}
2269
1741
ret = (int)TEMP_FAILURE_RETRY(close(sd));
2270
1742
if(ret == -1){
2271
perror_plus("close");
1743
perror("close");
2272
1744
}
2273
1745
/* Lower privileges permanently */
2274
1746
errno = 0;
2275
1747
ret = setuid(uid);
2276
1748
if(ret == -1){
2277
perror_plus("setuid");
1749
perror("setuid");
2278
1750
}
2279
1751
}
2280
1752
}
2281
1753
2282
/* Removes the GPGME temp directory and all files inside */
1754
/* Removes the temp directory used by GPGME */
2283
1755
if(tempdir_created){
2284
struct dirent **direntries = NULL;
2285
struct dirent *direntry = NULL;
2286
int numentries = scandir(tempdir, &direntries, notdotentries,
2287
alphasort);
2288
if (numentries > 0){
2289
for(int i = 0; i < numentries; i++){
2290
direntry = direntries[i];
1756
DIR *d;
1757
struct dirent *direntry;
1758
d = opendir(tempdir);
1759
if(d == NULL){
1760
if(errno != ENOENT){
1761
perror("opendir");
1762
}
1763
} else {
1764
while(true){
1765
direntry = readdir(d);
1766
if(direntry == NULL){
1767
break;
1768
}
1769
/* Skip "." and ".." */
1770
if(direntry->d_name[0] == '.'
1771
and (direntry->d_name[1] == '\0'
1772
or (direntry->d_name[1] == '.'
1773
and direntry->d_name[2] == '\0'))){
1774
continue;
1775
}
2291
1776
char *fullname = NULL;
2292
1777
ret = asprintf(&fullname, "%s/%s", tempdir,
2293
1778
direntry->d_name);
2294
1779
if(ret < 0){
2295
perror_plus("asprintf");
1780
perror("asprintf");
2296
1781
continue;
2297
1782
}
2298
1783
ret = remove(fullname);
2299
1784
if(ret == -1){
2300
fprintf(stderr, "Mandos plugin mandos-client: "
2301
"remove(\"%s\"): %s\n", fullname, strerror(errno));
1785
fprintf(stderr, "remove(\"%s\"): %s\n", fullname,
1786
strerror(errno));
2302
1787
}
2303
1788
free(fullname);
2304
1789
}
2305
}
2306
2307
/* need to clean even if 0 because man page doesn't specify */
2308
free(direntries);
2309
if (numentries == -1){
2310
perror_plus("scandir");
1790
closedir(d);
2311
1791
}
2312
1792
ret = rmdir(tempdir);
2313
1793
if(ret == -1 and errno != ENOENT){
2314
perror_plus("rmdir");
1794
perror("rmdir");
2315
1795
}
2316
1796
}
2317
1797
2322
1802
&old_sigterm_action,
2323
1803
NULL));
2324
1804
if(ret == -1){
2325
perror_plus("sigaction");
1805
perror("sigaction");
2326
1806
}
2327
1807
do {
2328
1808
ret = raise(signal_received);
2329
1809
} while(ret != 0 and errno == EINTR);
2330
1810
if(ret != 0){
2331
perror_plus("raise");
1811
perror("raise");
2332
1812
abort();
2333
1813
}
2334
1814
TEMP_FAILURE_RETRY(pause());
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0