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- Committer: Teddy Hogeborn
- Date: 2014-07-13 21:55:28 UTC
- mfrom: (237.4.49 release)
- Revision ID: teddy@recompile.se-20140713215528-5lez8qv009g0i1h2
Merge from release branch.
- files added:
- debian/upstream
- files modified:
- INSTALL
added
removed
plugins.d/mandos-client.c
9
9
* "browse_callback", and parts of "main".
10
10
*
11
11
* Everything else is
12
* Copyright © 2008-2013 Teddy Hogeborn
13
* Copyright © 2008-2013 Björn Påhlsson
12
* Copyright © 2008-2014 Teddy Hogeborn
13
* Copyright © 2008-2014 Björn Påhlsson
14
14
*
15
15
* This program is free software: you can redistribute it and/or
16
16
* modify it under the terms of the GNU General Public License as
32
32
/* Needed by GPGME, specifically gpgme_data_seek() */
33
33
#ifndef _LARGEFILE_SOURCE
34
34
#define _LARGEFILE_SOURCE
35
#endif
35
#endif /* not _LARGEFILE_SOURCE */
36
36
#ifndef _FILE_OFFSET_BITS
37
37
#define _FILE_OFFSET_BITS 64
38
#endif
38
#endif /* not _FILE_OFFSET_BITS */
39
39
40
40
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
41
41
42
42
#include <stdio.h> /* fprintf(), stderr, fwrite(),
43
stdout, ferror(), remove() */
43
stdout, ferror() */
44
44
#include <stdint.h> /* uint16_t, uint32_t, intptr_t */
45
45
#include <stddef.h> /* NULL, size_t, ssize_t */
46
46
#include <stdlib.h> /* free(), EXIT_SUCCESS, srand(),
55
55
opendir(), DIR */
56
56
#include <sys/stat.h> /* open(), S_ISREG */
57
57
#include <sys/socket.h> /* socket(), struct sockaddr_in6,
58
inet_pton(), connect() */
59
#include <fcntl.h> /* open() */
58
inet_pton(), connect(),
59
getnameinfo() */
60
#include <fcntl.h> /* open(), unlinkat() */
60
61
#include <dirent.h> /* opendir(), struct dirent, readdir()
61
62
*/
62
63
#include <inttypes.h> /* PRIu16, PRIdMAX, intmax_t,
72
73
*/
73
74
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
74
75
getuid(), getgid(), seteuid(),
75
setgid(), pause(), _exit() */
76
#include <arpa/inet.h> /* inet_pton(), htons, inet_ntop() */
76
setgid(), pause(), _exit(),
77
unlinkat() */
78
#include <arpa/inet.h> /* inet_pton(), htons() */
77
79
#include <iso646.h> /* not, or, and */
78
80
#include <argp.h> /* struct argp_option, error_t, struct
79
81
argp_state, struct argp,
91
93
argz_delete(), argz_append(),
92
94
argz_stringify(), argz_add(),
93
95
argz_count() */
96
#include <netdb.h> /* getnameinfo(), NI_NUMERICHOST,
97
EAI_SYSTEM, gai_strerror() */
94
98
95
99
#ifdef __linux__
96
100
#include <sys/klog.h> /* klogctl() */
138
142
static const char sys_class_net[] = "/sys/class/net";
139
143
char *connect_to = NULL;
140
144
const char *hookdir = HOOKDIR;
145
int hookdir_fd = -1;
141
146
uid_t uid = 65534;
142
147
gid_t gid = 65534;
143
148
180
185
perror(print_text);
181
186
}
182
187
183
__attribute__((format (gnu_printf, 2, 3)))
188
__attribute__((format (gnu_printf, 2, 3), nonnull))
184
189
int fprintf_plus(FILE *stream, const char *format, ...){
185
190
va_list ap;
186
191
va_start (ap, format);
195
200
* bytes. "buffer_capacity" is how much is currently allocated,
196
201
* "buffer_length" is how much is already used.
197
202
*/
203
__attribute__((nonnull, warn_unused_result))
198
204
size_t incbuffer(char **buffer, size_t buffer_length,
199
205
size_t buffer_capacity){
200
206
if(buffer_length + BUFFER_SIZE > buffer_capacity){
201
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
202
if(buffer == NULL){
207
char *new_buf = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
208
if(new_buf == NULL){
209
int old_errno = errno;
210
free(*buffer);
211
errno = old_errno;
212
*buffer = NULL;
203
213
return 0;
204
214
}
215
*buffer = new_buf;
205
216
buffer_capacity += BUFFER_SIZE;
206
217
}
207
218
return buffer_capacity;
208
219
}
209
220
210
221
/* Add server to set of servers to retry periodically */
222
__attribute__((nonnull, warn_unused_result))
211
223
bool add_server(const char *ip, in_port_t port, AvahiIfIndex if_index,
212
224
int af, server **current_server){
213
225
int ret;
222
234
.af = af };
223
235
if(new_server->ip == NULL){
224
236
perror_plus("strdup");
237
free(new_server);
238
return false;
239
}
240
ret = clock_gettime(CLOCK_MONOTONIC, &(new_server->last_seen));
241
if(ret == -1){
242
perror_plus("clock_gettime");
243
free(new_server->ip);
244
free(new_server);
225
245
return false;
226
246
}
227
247
/* Special case of first server */
229
249
new_server->next = new_server;
230
250
new_server->prev = new_server;
231
251
*current_server = new_server;
232
/* Place the new server last in the list */
233
252
} else {
253
/* Place the new server last in the list */
234
254
new_server->next = *current_server;
235
255
new_server->prev = (*current_server)->prev;
236
256
new_server->prev->next = new_server;
237
257
(*current_server)->prev = new_server;
238
258
}
239
ret = clock_gettime(CLOCK_MONOTONIC, &(*current_server)->last_seen);
240
if(ret == -1){
241
perror_plus("clock_gettime");
242
return false;
243
}
244
259
return true;
245
260
}
246
261
247
262
/*
248
263
* Initialize GPGME.
249
264
*/
250
static bool init_gpgme(const char *seckey, const char *pubkey,
251
const char *tempdir, mandos_context *mc){
265
__attribute__((nonnull, warn_unused_result))
266
static bool init_gpgme(const char * const seckey,
267
const char * const pubkey,
268
const char * const tempdir,
269
mandos_context *mc){
252
270
gpgme_error_t rc;
253
271
gpgme_engine_info_t engine_info;
254
272
255
273
/*
256
274
* Helper function to insert pub and seckey to the engine keyring.
257
275
*/
258
bool import_key(const char *filename){
276
bool import_key(const char * const filename){
259
277
int ret;
260
278
int fd;
261
279
gpgme_data_t pgp_data;
342
360
* Decrypt OpenPGP data.
343
361
* Returns -1 on error
344
362
*/
363
__attribute__((nonnull, warn_unused_result))
345
364
static ssize_t pgp_packet_decrypt(const char *cryptotext,
346
365
size_t crypto_size,
347
366
char **plaintext,
467
486
return plaintext_length;
468
487
}
469
488
470
static const char * safer_gnutls_strerror(int value){
489
__attribute__((warn_unused_result))
490
static const char *safer_gnutls_strerror(int value){
471
491
const char *ret = gnutls_strerror(value);
472
492
if(ret == NULL)
473
493
ret = "(unknown)";
475
495
}
476
496
477
497
/* GnuTLS log function callback */
498
__attribute__((nonnull))
478
499
static void debuggnutls(__attribute__((unused)) int level,
479
500
const char* string){
480
501
fprintf_plus(stderr, "GnuTLS: %s", string);
481
502
}
482
503
504
__attribute__((nonnull, warn_unused_result))
483
505
static int init_gnutls_global(const char *pubkeyfilename,
484
506
const char *seckeyfilename,
485
507
mandos_context *mc){
559
581
return -1;
560
582
}
561
583
584
__attribute__((nonnull, warn_unused_result))
562
585
static int init_gnutls_session(gnutls_session_t *session,
563
586
mandos_context *mc){
564
587
int ret;
621
644
__attribute__((unused)) const char *txt){}
622
645
623
646
/* Called when a Mandos server is found */
647
__attribute__((nonnull, warn_unused_result))
624
648
static int start_mandos_communication(const char *ip, in_port_t port,
625
649
AvahiIfIndex if_index,
626
650
int af, mandos_context *mc){
627
651
int ret, tcp_sd = -1;
628
652
ssize_t sret;
629
union {
630
struct sockaddr_in in;
631
struct sockaddr_in6 in6;
632
} to;
653
struct sockaddr_storage to;
633
654
char *buffer = NULL;
634
655
char *decrypted_buffer = NULL;
635
656
size_t buffer_length = 0;
716
737
717
738
memset(&to, 0, sizeof(to));
718
739
if(af == AF_INET6){
719
to.in6.sin6_family = (sa_family_t)af;
720
ret = inet_pton(af, ip, &to.in6.sin6_addr);
740
((struct sockaddr_in6 *)&to)->sin6_family = (sa_family_t)af;
741
ret = inet_pton(af, ip, &((struct sockaddr_in6 *)&to)->sin6_addr);
721
742
} else { /* IPv4 */
722
to.in.sin_family = (sa_family_t)af;
723
ret = inet_pton(af, ip, &to.in.sin_addr);
743
((struct sockaddr_in *)&to)->sin_family = (sa_family_t)af;
744
ret = inet_pton(af, ip, &((struct sockaddr_in *)&to)->sin_addr);
724
745
}
725
746
if(ret < 0 ){
726
747
int e = errno;
735
756
goto mandos_end;
736
757
}
737
758
if(af == AF_INET6){
738
to.in6.sin6_port = htons(port);
739
#ifdef __GNUC__
740
#pragma GCC diagnostic push
741
#pragma GCC diagnostic ignored "-Wstrict-aliasing"
742
#endif
743
if(IN6_IS_ADDR_LINKLOCAL /* Spurious warnings from */
744
(&to.in6.sin6_addr)){ /* -Wstrict-aliasing=2 or lower */
745
#ifdef __GNUC__
746
#pragma GCC diagnostic pop
747
#endif
759
((struct sockaddr_in6 *)&to)->sin6_port = htons(port);
760
if(IN6_IS_ADDR_LINKLOCAL
761
(&((struct sockaddr_in6 *)&to)->sin6_addr)){
748
762
if(if_index == AVAHI_IF_UNSPEC){
749
763
fprintf_plus(stderr, "An IPv6 link-local address is"
750
764
" incomplete without a network interface\n");
752
766
goto mandos_end;
753
767
}
754
768
/* Set the network interface number as scope */
755
to.in6.sin6_scope_id = (uint32_t)if_index;
769
((struct sockaddr_in6 *)&to)->sin6_scope_id = (uint32_t)if_index;
756
770
}
757
771
} else {
758
to.in.sin_port = htons(port);
772
((struct sockaddr_in *)&to)->sin_port = htons(port);
759
773
}
760
774
761
775
if(quit_now){
778
792
}
779
793
char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
780
794
INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
781
const char *pcret;
782
795
if(af == AF_INET6){
783
pcret = inet_ntop(af, &(to.in6.sin6_addr), addrstr,
784
sizeof(addrstr));
796
ret = getnameinfo((struct sockaddr *)&to,
797
sizeof(struct sockaddr_in6),
798
addrstr, sizeof(addrstr), NULL, 0,
799
NI_NUMERICHOST);
785
800
} else {
786
pcret = inet_ntop(af, &(to.in.sin_addr), addrstr,
787
sizeof(addrstr));
801
ret = getnameinfo((struct sockaddr *)&to,
802
sizeof(struct sockaddr_in),
803
addrstr, sizeof(addrstr), NULL, 0,
804
NI_NUMERICHOST);
788
805
}
789
if(pcret == NULL){
790
perror_plus("inet_ntop");
791
} else {
792
if(strcmp(addrstr, ip) != 0){
793
fprintf_plus(stderr, "Canonical address form: %s\n", addrstr);
794
}
806
if(ret == EAI_SYSTEM){
807
perror_plus("getnameinfo");
808
} else if(ret != 0) {
809
fprintf_plus(stderr, "getnameinfo: %s", gai_strerror(ret));
810
} else if(strcmp(addrstr, ip) != 0){
811
fprintf_plus(stderr, "Canonical address form: %s\n", addrstr);
795
812
}
796
813
}
797
814
801
818
}
802
819
803
820
if(af == AF_INET6){
804
ret = connect(tcp_sd, &to.in6, sizeof(to));
821
ret = connect(tcp_sd, (struct sockaddr *)&to,
822
sizeof(struct sockaddr_in6));
805
823
} else {
806
ret = connect(tcp_sd, &to.in, sizeof(to)); /* IPv4 */
824
ret = connect(tcp_sd, (struct sockaddr *)&to, /* IPv4 */
825
sizeof(struct sockaddr_in));
807
826
}
808
827
if(ret < 0){
809
if ((errno != ECONNREFUSED and errno != ENETUNREACH) or debug){
828
if((errno != ECONNREFUSED and errno != ENETUNREACH) or debug){
810
829
int e = errno;
811
830
perror_plus("connect");
812
831
errno = e;
1027
1046
return retval;
1028
1047
}
1029
1048
1049
__attribute__((nonnull))
1030
1050
static void resolve_callback(AvahiSServiceResolver *r,
1031
1051
AvahiIfIndex interface,
1032
1052
AvahiProtocol proto,
1040
1060
AVAHI_GCC_UNUSED AvahiStringList *txt,
1041
1061
AVAHI_GCC_UNUSED AvahiLookupResultFlags
1042
1062
flags,
1043
void* mc){
1063
void *mc){
1044
1064
if(r == NULL){
1045
1065
return;
1046
1066
}
1099
1119
const char *domain,
1100
1120
AVAHI_GCC_UNUSED AvahiLookupResultFlags
1101
1121
flags,
1102
void* mc){
1122
void *mc){
1103
1123
if(b == NULL){
1104
1124
return;
1105
1125
}
1165
1185
errno = old_errno;
1166
1186
}
1167
1187
1188
__attribute__((nonnull, warn_unused_result))
1168
1189
bool get_flags(const char *ifname, struct ifreq *ifr){
1169
1190
int ret;
1170
1191
error_t ret_errno;
1189
1210
return true;
1190
1211
}
1191
1212
1213
__attribute__((nonnull, warn_unused_result))
1192
1214
bool good_flags(const char *ifname, const struct ifreq *ifr){
1193
1215
1194
1216
/* Reject the loopback device */
1236
1258
* corresponds to an acceptable network device.
1237
1259
* (This function is passed to scandir(3) as a filter function.)
1238
1260
*/
1261
__attribute__((nonnull, warn_unused_result))
1239
1262
int good_interface(const struct dirent *if_entry){
1240
1263
if(if_entry->d_name[0] == '.'){
1241
1264
return 0;
1259
1282
/*
1260
1283
* This function determines if a network interface is up.
1261
1284
*/
1285
__attribute__((nonnull, warn_unused_result))
1262
1286
bool interface_is_up(const char *interface){
1263
1287
struct ifreq ifr;
1264
1288
if(not get_flags(interface, &ifr)){
1275
1299
/*
1276
1300
* This function determines if a network interface is running
1277
1301
*/
1302
__attribute__((nonnull, warn_unused_result))
1278
1303
bool interface_is_running(const char *interface){
1279
1304
struct ifreq ifr;
1280
1305
if(not get_flags(interface, &ifr)){
1288
1313
return (bool)(ifr.ifr_flags & IFF_RUNNING);
1289
1314
}
1290
1315
1316
__attribute__((nonnull, pure, warn_unused_result))
1291
1317
int notdotentries(const struct dirent *direntry){
1292
1318
/* Skip "." and ".." */
1293
1319
if(direntry->d_name[0] == '.'
1300
1326
}
1301
1327
1302
1328
/* Is this directory entry a runnable program? */
1329
__attribute__((nonnull, warn_unused_result))
1303
1330
int runnable_hook(const struct dirent *direntry){
1304
1331
int ret;
1305
1332
size_t sret;
1313
1340
sret = strspn(direntry->d_name, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1314
1341
"abcdefghijklmnopqrstuvwxyz"
1315
1342
"0123456789"
1316
"_-");
1343
"_.-");
1317
1344
if((direntry->d_name)[sret] != '\0'){
1318
1345
/* Contains non-allowed characters */
1319
1346
if(debug){
1323
1350
return 0;
1324
1351
}
1325
1352
1326
char *fullname = NULL;
1327
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1328
if(ret < 0){
1329
perror_plus("asprintf");
1330
return 0;
1331
}
1332
1333
ret = stat(fullname, &st);
1353
ret = fstatat(hookdir_fd, direntry->d_name, &st, 0);
1334
1354
if(ret == -1){
1335
1355
if(debug){
1336
1356
perror_plus("Could not stat hook");
1360
1380
return 1;
1361
1381
}
1362
1382
1383
__attribute__((nonnull, warn_unused_result))
1363
1384
int avahi_loop_with_timeout(AvahiSimplePoll *s, int retry_interval,
1364
1385
mandos_context *mc){
1365
1386
int ret;
1369
1390
1370
1391
while(true){
1371
1392
if(mc->current_server == NULL){
1372
if (debug){
1393
if(debug){
1373
1394
fprintf_plus(stderr, "Wait until first server is found."
1374
1395
" No timeout!\n");
1375
1396
}
1376
1397
ret = avahi_simple_poll_iterate(s, -1);
1377
1398
} else {
1378
if (debug){
1399
if(debug){
1379
1400
fprintf_plus(stderr, "Check current_server if we should run"
1380
1401
" it, or wait\n");
1381
1402
}
1398
1419
- ((intmax_t)waited_time.tv_sec * 1000))
1399
1420
- ((intmax_t)waited_time.tv_nsec / 1000000));
1400
1421
1401
if (debug){
1422
if(debug){
1402
1423
fprintf_plus(stderr, "Blocking for %" PRIdMAX " ms\n",
1403
1424
block_time);
1404
1425
}
1426
1447
ret = avahi_simple_poll_iterate(s, (int)block_time);
1427
1448
}
1428
1449
if(ret != 0){
1429
if (ret > 0 or errno != EINTR){
1450
if(ret > 0 or errno != EINTR){
1430
1451
return (ret != 1) ? ret : 0;
1431
1452
}
1432
1453
}
1434
1455
}
1435
1456
1436
1457
/* Set effective uid to 0, return errno */
1458
__attribute__((warn_unused_result))
1437
1459
error_t raise_privileges(void){
1438
1460
error_t old_errno = errno;
1439
1461
error_t ret_errno = 0;
1440
1462
if(seteuid(0) == -1){
1441
1463
ret_errno = errno;
1442
perror_plus("seteuid");
1443
1464
}
1444
1465
errno = old_errno;
1445
1466
return ret_errno;
1446
1467
}
1447
1468
1448
1469
/* Set effective and real user ID to 0. Return errno. */
1470
__attribute__((warn_unused_result))
1449
1471
error_t raise_privileges_permanently(void){
1450
1472
error_t old_errno = errno;
1451
1473
error_t ret_errno = raise_privileges();
1455
1477
}
1456
1478
if(setuid(0) == -1){
1457
1479
ret_errno = errno;
1458
perror_plus("seteuid");
1459
1480
}
1460
1481
errno = old_errno;
1461
1482
return ret_errno;
1462
1483
}
1463
1484
1464
1485
/* Set effective user ID to unprivileged saved user ID */
1486
__attribute__((warn_unused_result))
1465
1487
error_t lower_privileges(void){
1466
1488
error_t old_errno = errno;
1467
1489
error_t ret_errno = 0;
1468
1490
if(seteuid(uid) == -1){
1469
1491
ret_errno = errno;
1470
perror_plus("seteuid");
1471
1492
}
1472
1493
errno = old_errno;
1473
1494
return ret_errno;
1474
1495
}
1475
1496
1476
1497
/* Lower privileges permanently */
1498
__attribute__((warn_unused_result))
1477
1499
error_t lower_privileges_permanently(void){
1478
1500
error_t old_errno = errno;
1479
1501
error_t ret_errno = 0;
1480
1502
if(setuid(uid) == -1){
1481
1503
ret_errno = errno;
1482
perror_plus("setuid");
1483
1504
}
1484
1505
errno = old_errno;
1485
1506
return ret_errno;
1486
1507
}
1487
1508
1488
bool run_network_hooks(const char *mode, const char *interface,
1509
__attribute__((nonnull))
1510
void run_network_hooks(const char *mode, const char *interface,
1489
1511
const float delay){
1490
struct dirent **direntries;
1512
struct dirent **direntries = NULL;
1513
if(hookdir_fd == -1){
1514
hookdir_fd = open(hookdir, O_RDONLY);
1515
if(hookdir_fd == -1){
1516
if(errno == ENOENT){
1517
if(debug){
1518
fprintf_plus(stderr, "Network hook directory \"%s\" not"
1519
" found\n", hookdir);
1520
}
1521
} else {
1522
perror_plus("open");
1523
}
1524
return;
1525
}
1526
}
1527
#ifdef __GLIBC__
1528
#if __GLIBC_PREREQ(2, 15)
1529
int numhooks = scandirat(hookdir_fd, ".", &direntries,
1530
runnable_hook, alphasort);
1531
#else /* not __GLIBC_PREREQ(2, 15) */
1532
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1533
alphasort);
1534
#endif /* not __GLIBC_PREREQ(2, 15) */
1535
#else /* not __GLIBC__ */
1536
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1537
alphasort);
1538
#endif /* not __GLIBC__ */
1539
if(numhooks == -1){
1540
perror_plus("scandir");
1541
return;
1542
}
1491
1543
struct dirent *direntry;
1492
1544
int ret;
1493
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1494
alphasort);
1495
if(numhooks == -1){
1496
if(errno == ENOENT){
1497
if(debug){
1498
fprintf_plus(stderr, "Network hook directory \"%s\" not"
1499
" found\n", hookdir);
1500
}
1501
} else {
1502
perror_plus("scandir");
1545
int devnull = open("/dev/null", O_RDONLY);
1546
for(int i = 0; i < numhooks; i++){
1547
direntry = direntries[i];
1548
if(debug){
1549
fprintf_plus(stderr, "Running network hook \"%s\"\n",
1550
direntry->d_name);
1503
1551
}
1504
} else {
1505
int devnull = open("/dev/null", O_RDONLY);
1506
for(int i = 0; i < numhooks; i++){
1507
direntry = direntries[i];
1508
char *fullname = NULL;
1509
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1510
if(ret < 0){
1552
pid_t hook_pid = fork();
1553
if(hook_pid == 0){
1554
/* Child */
1555
/* Raise privileges */
1556
errno = raise_privileges_permanently();
1557
if(errno != 0){
1558
perror_plus("Failed to raise privileges");
1559
_exit(EX_NOPERM);
1560
}
1561
/* Set group */
1562
errno = 0;
1563
ret = setgid(0);
1564
if(ret == -1){
1565
perror_plus("setgid");
1566
_exit(EX_NOPERM);
1567
}
1568
/* Reset supplementary groups */
1569
errno = 0;
1570
ret = setgroups(0, NULL);
1571
if(ret == -1){
1572
perror_plus("setgroups");
1573
_exit(EX_NOPERM);
1574
}
1575
ret = dup2(devnull, STDIN_FILENO);
1576
if(ret == -1){
1577
perror_plus("dup2(devnull, STDIN_FILENO)");
1578
_exit(EX_OSERR);
1579
}
1580
ret = close(devnull);
1581
if(ret == -1){
1582
perror_plus("close");
1583
_exit(EX_OSERR);
1584
}
1585
ret = dup2(STDERR_FILENO, STDOUT_FILENO);
1586
if(ret == -1){
1587
perror_plus("dup2(STDERR_FILENO, STDOUT_FILENO)");
1588
_exit(EX_OSERR);
1589
}
1590
ret = setenv("MANDOSNETHOOKDIR", hookdir, 1);
1591
if(ret == -1){
1592
perror_plus("setenv");
1593
_exit(EX_OSERR);
1594
}
1595
ret = setenv("DEVICE", interface, 1);
1596
if(ret == -1){
1597
perror_plus("setenv");
1598
_exit(EX_OSERR);
1599
}
1600
ret = setenv("VERBOSITY", debug ? "1" : "0", 1);
1601
if(ret == -1){
1602
perror_plus("setenv");
1603
_exit(EX_OSERR);
1604
}
1605
ret = setenv("MODE", mode, 1);
1606
if(ret == -1){
1607
perror_plus("setenv");
1608
_exit(EX_OSERR);
1609
}
1610
char *delaystring;
1611
ret = asprintf(&delaystring, "%f", (double)delay);
1612
if(ret == -1){
1511
1613
perror_plus("asprintf");
1512
continue;
1513
}
1514
if(debug){
1515
fprintf_plus(stderr, "Running network hook \"%s\"\n",
1516
direntry->d_name);
1517
}
1518
pid_t hook_pid = fork();
1519
if(hook_pid == 0){
1520
/* Child */
1521
/* Raise privileges */
1522
raise_privileges_permanently();
1523
/* Set group */
1524
errno = 0;
1525
ret = setgid(0);
1526
if(ret == -1){
1527
perror_plus("setgid");
1528
}
1529
/* Reset supplementary groups */
1530
errno = 0;
1531
ret = setgroups(0, NULL);
1532
if(ret == -1){
1533
perror_plus("setgroups");
1534
}
1535
dup2(devnull, STDIN_FILENO);
1536
close(devnull);
1537
dup2(STDERR_FILENO, STDOUT_FILENO);
1538
ret = setenv("MANDOSNETHOOKDIR", hookdir, 1);
1539
if(ret == -1){
1540
perror_plus("setenv");
1541
_exit(EX_OSERR);
1542
}
1543
ret = setenv("DEVICE", interface, 1);
1544
if(ret == -1){
1545
perror_plus("setenv");
1546
_exit(EX_OSERR);
1547
}
1548
ret = setenv("VERBOSITY", debug ? "1" : "0", 1);
1549
if(ret == -1){
1550
perror_plus("setenv");
1551
_exit(EX_OSERR);
1552
}
1553
ret = setenv("MODE", mode, 1);
1554
if(ret == -1){
1555
perror_plus("setenv");
1556
_exit(EX_OSERR);
1557
}
1558
char *delaystring;
1559
ret = asprintf(&delaystring, "%f", delay);
1560
if(ret == -1){
1561
perror_plus("asprintf");
1562
_exit(EX_OSERR);
1563
}
1564
ret = setenv("DELAY", delaystring, 1);
1565
if(ret == -1){
1566
free(delaystring);
1567
perror_plus("setenv");
1568
_exit(EX_OSERR);
1569
}
1614
_exit(EX_OSERR);
1615
}
1616
ret = setenv("DELAY", delaystring, 1);
1617
if(ret == -1){
1570
1618
free(delaystring);
1571
if(connect_to != NULL){
1572
ret = setenv("CONNECT", connect_to, 1);
1573
if(ret == -1){
1574
perror_plus("setenv");
1575
_exit(EX_OSERR);
1576
}
1577
}
1578
if(execl(fullname, direntry->d_name, mode, NULL) == -1){
1579
perror_plus("execl");
1580
_exit(EXIT_FAILURE);
1581
}
1619
perror_plus("setenv");
1620
_exit(EX_OSERR);
1621
}
1622
free(delaystring);
1623
if(connect_to != NULL){
1624
ret = setenv("CONNECT", connect_to, 1);
1625
if(ret == -1){
1626
perror_plus("setenv");
1627
_exit(EX_OSERR);
1628
}
1629
}
1630
int hook_fd = openat(hookdir_fd, direntry->d_name, O_RDONLY);
1631
if(hook_fd == -1){
1632
perror_plus("openat");
1633
_exit(EXIT_FAILURE);
1634
}
1635
if((int)TEMP_FAILURE_RETRY(close(hookdir_fd)) == -1){
1636
perror_plus("close");
1637
_exit(EXIT_FAILURE);
1638
}
1639
if(fexecve(hook_fd, (char *const []){ direntry->d_name, NULL },
1640
environ) == -1){
1641
perror_plus("fexecve");
1642
_exit(EXIT_FAILURE);
1643
}
1644
} else {
1645
int status;
1646
if(TEMP_FAILURE_RETRY(waitpid(hook_pid, &status, 0)) == -1){
1647
perror_plus("waitpid");
1648
continue;
1649
}
1650
if(WIFEXITED(status)){
1651
if(WEXITSTATUS(status) != 0){
1652
fprintf_plus(stderr, "Warning: network hook \"%s\" exited"
1653
" with status %d\n", direntry->d_name,
1654
WEXITSTATUS(status));
1655
continue;
1656
}
1657
} else if(WIFSIGNALED(status)){
1658
fprintf_plus(stderr, "Warning: network hook \"%s\" died by"
1659
" signal %d\n", direntry->d_name,
1660
WTERMSIG(status));
1661
continue;
1582
1662
} else {
1583
int status;
1584
if(TEMP_FAILURE_RETRY(waitpid(hook_pid, &status, 0)) == -1){
1585
perror_plus("waitpid");
1586
free(fullname);
1587
continue;
1588
}
1589
if(WIFEXITED(status)){
1590
if(WEXITSTATUS(status) != 0){
1591
fprintf_plus(stderr, "Warning: network hook \"%s\" exited"
1592
" with status %d\n", direntry->d_name,
1593
WEXITSTATUS(status));
1594
free(fullname);
1595
continue;
1596
}
1597
} else if(WIFSIGNALED(status)){
1598
fprintf_plus(stderr, "Warning: network hook \"%s\" died by"
1599
" signal %d\n", direntry->d_name,
1600
WTERMSIG(status));
1601
free(fullname);
1602
continue;
1603
} else {
1604
fprintf_plus(stderr, "Warning: network hook \"%s\""
1605
" crashed\n", direntry->d_name);
1606
free(fullname);
1607
continue;
1608
}
1609
}
1610
free(fullname);
1611
if(debug){
1612
fprintf_plus(stderr, "Network hook \"%s\" ran successfully\n",
1613
direntry->d_name);
1614
}
1615
}
1616
close(devnull);
1617
}
1618
return true;
1663
fprintf_plus(stderr, "Warning: network hook \"%s\""
1664
" crashed\n", direntry->d_name);
1665
continue;
1666
}
1667
}
1668
if(debug){
1669
fprintf_plus(stderr, "Network hook \"%s\" ran successfully\n",
1670
direntry->d_name);
1671
}
1672
}
1673
free(direntries);
1674
if((int)TEMP_FAILURE_RETRY(close(hookdir_fd)) == -1){
1675
perror_plus("close");
1676
} else {
1677
hookdir_fd = -1;
1678
}
1679
close(devnull);
1619
1680
}
1620
1681
1682
__attribute__((nonnull, warn_unused_result))
1621
1683
error_t bring_up_interface(const char *const interface,
1622
1684
const float delay){
1623
int sd = -1;
1624
1685
error_t old_errno = errno;
1625
error_t ret_errno = 0;
1626
int ret, ret_setflags;
1686
int ret;
1627
1687
struct ifreq network;
1628
1688
unsigned int if_index = if_nametoindex(interface);
1629
1689
if(if_index == 0){
1638
1698
}
1639
1699
1640
1700
if(not interface_is_up(interface)){
1641
if(not get_flags(interface, &network) and debug){
1701
error_t ret_errno = 0, ioctl_errno = 0;
1702
if(not get_flags(interface, &network)){
1642
1703
ret_errno = errno;
1643
1704
fprintf_plus(stderr, "Failed to get flags for interface "
1644
1705
"\"%s\"\n", interface);
1706
errno = old_errno;
1645
1707
return ret_errno;
1646
1708
}
1647
network.ifr_flags |= IFF_UP;
1709
network.ifr_flags |= IFF_UP; /* set flag */
1648
1710
1649
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1650
if(sd < 0){
1711
int sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1712
if(sd == -1){
1651
1713
ret_errno = errno;
1652
1714
perror_plus("socket");
1653
1715
errno = old_errno;
1654
1716
return ret_errno;
1655
1717
}
1656
1718
1657
1719
if(quit_now){
1658
close(sd);
1720
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1721
if(ret == -1){
1722
perror_plus("close");
1723
}
1659
1724
errno = old_errno;
1660
1725
return EINTR;
1661
1726
}
1665
1730
interface);
1666
1731
}
1667
1732
1668
/* Raise priviliges */
1669
raise_privileges();
1733
/* Raise privileges */
1734
ret_errno = raise_privileges();
1735
if(ret_errno != 0){
1736
errno = ret_errno;
1737
perror_plus("Failed to raise privileges");
1738
}
1670
1739
1671
1740
#ifdef __linux__
1672
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1673
messages about the network interface to mess up the prompt */
1674
int ret_linux = klogctl(8, NULL, 5);
1675
bool restore_loglevel = true;
1676
if(ret_linux == -1){
1677
restore_loglevel = false;
1678
perror_plus("klogctl");
1741
int ret_linux;
1742
bool restore_loglevel = false;
1743
if(ret_errno == 0){
1744
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1745
messages about the network interface to mess up the prompt */
1746
ret_linux = klogctl(8, NULL, 5);
1747
if(ret_linux == -1){
1748
perror_plus("klogctl");
1749
} else {
1750
restore_loglevel = true;
1751
}
1679
1752
}
1680
1753
#endif /* __linux__ */
1681
ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
1682
ret_errno = errno;
1754
int ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
1755
ioctl_errno = errno;
1683
1756
#ifdef __linux__
1684
1757
if(restore_loglevel){
1685
1758
ret_linux = klogctl(7, NULL, 0);
1689
1762
}
1690
1763
#endif /* __linux__ */
1691
1764
1692
/* Lower privileges */
1693
lower_privileges();
1765
/* If raise_privileges() succeeded above */
1766
if(ret_errno == 0){
1767
/* Lower privileges */
1768
ret_errno = lower_privileges();
1769
if(ret_errno != 0){
1770
errno = ret_errno;
1771
perror_plus("Failed to lower privileges");
1772
}
1773
}
1694
1774
1695
1775
/* Close the socket */
1696
1776
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1699
1779
}
1700
1780
1701
1781
if(ret_setflags == -1){
1702
errno = ret_errno;
1782
errno = ioctl_errno;
1703
1783
perror_plus("ioctl SIOCSIFFLAGS +IFF_UP");
1704
1784
errno = old_errno;
1705
return ret_errno;
1785
return ioctl_errno;
1706
1786
}
1707
1787
} else if(debug){
1708
1788
fprintf_plus(stderr, "Interface \"%s\" is already up; good\n",
1726
1806
return 0;
1727
1807
}
1728
1808
1809
__attribute__((nonnull, warn_unused_result))
1729
1810
error_t take_down_interface(const char *const interface){
1730
int sd = -1;
1731
1811
error_t old_errno = errno;
1732
error_t ret_errno = 0;
1733
int ret, ret_setflags;
1734
1812
struct ifreq network;
1735
1813
unsigned int if_index = if_nametoindex(interface);
1736
1814
if(if_index == 0){
1739
1817
return ENXIO;
1740
1818
}
1741
1819
if(interface_is_up(interface)){
1820
error_t ret_errno = 0, ioctl_errno = 0;
1742
1821
if(not get_flags(interface, &network) and debug){
1743
1822
ret_errno = errno;
1744
1823
fprintf_plus(stderr, "Failed to get flags for interface "
1745
1824
"\"%s\"\n", interface);
1825
errno = old_errno;
1746
1826
return ret_errno;
1747
1827
}
1748
1828
network.ifr_flags &= ~(short)IFF_UP; /* clear flag */
1749
1829
1750
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1751
if(sd < 0){
1830
int sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1831
if(sd == -1){
1752
1832
ret_errno = errno;
1753
1833
perror_plus("socket");
1754
1834
errno = old_errno;
1760
1840
interface);
1761
1841
}
1762
1842
1763
/* Raise priviliges */
1764
raise_privileges();
1765
1766
ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
1767
ret_errno = errno;
1768
1769
/* Lower privileges */
1770
lower_privileges();
1843
/* Raise privileges */
1844
ret_errno = raise_privileges();
1845
if(ret_errno != 0){
1846
errno = ret_errno;
1847
perror_plus("Failed to raise privileges");
1848
}
1849
1850
int ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
1851
ioctl_errno = errno;
1852
1853
/* If raise_privileges() succeeded above */
1854
if(ret_errno == 0){
1855
/* Lower privileges */
1856
ret_errno = lower_privileges();
1857
if(ret_errno != 0){
1858
errno = ret_errno;
1859
perror_plus("Failed to lower privileges");
1860
}
1861
}
1771
1862
1772
1863
/* Close the socket */
1773
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1864
int ret = (int)TEMP_FAILURE_RETRY(close(sd));
1774
1865
if(ret == -1){
1775
1866
perror_plus("close");
1776
1867
}
1777
1868
1778
1869
if(ret_setflags == -1){
1779
errno = ret_errno;
1870
errno = ioctl_errno;
1780
1871
perror_plus("ioctl SIOCSIFFLAGS -IFF_UP");
1781
1872
errno = old_errno;
1782
return ret_errno;
1873
return ioctl_errno;
1783
1874
}
1784
1875
} else if(debug){
1785
1876
fprintf_plus(stderr, "Interface \"%s\" is already down; odd\n",
1793
1884
int main(int argc, char *argv[]){
1794
1885
mandos_context mc = { .server = NULL, .dh_bits = 1024,
1795
1886
.priority = "SECURE256:!CTYPE-X.509:"
1796
"+CTYPE-OPENPGP", .current_server = NULL,
1887
"+CTYPE-OPENPGP", .current_server = NULL,
1797
1888
.interfaces = NULL, .interfaces_size = 0 };
1798
1889
AvahiSServiceBrowser *sb = NULL;
1799
1890
error_t ret_errno;
1803
1894
int exitcode = EXIT_SUCCESS;
1804
1895
char *interfaces_to_take_down = NULL;
1805
1896
size_t interfaces_to_take_down_size = 0;
1806
char tempdir[] = "/tmp/mandosXXXXXX";
1807
bool tempdir_created = false;
1897
char run_tempdir[] = "/run/tmp/mandosXXXXXX";
1898
char old_tempdir[] = "/tmp/mandosXXXXXX";
1899
char *tempdir = NULL;
1808
1900
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
1809
1901
const char *seckey = PATHDIR "/" SECKEY;
1810
1902
const char *pubkey = PATHDIR "/" PUBKEY;
1811
1903
char *interfaces_hooks = NULL;
1812
size_t interfaces_hooks_size = 0;
1813
1904
1814
1905
bool gnutls_initialized = false;
1815
1906
bool gpgme_initialized = false;
1993
2084
/* Work around Debian bug #633582:
1994
2085
<http://bugs.debian.org/633582> */
1995
2086
1996
/* Re-raise priviliges */
1997
if(raise_privileges() == 0){
2087
/* Re-raise privileges */
2088
ret_errno = raise_privileges();
2089
if(ret_errno != 0){
2090
errno = ret_errno;
2091
perror_plus("Failed to raise privileges");
2092
} else {
1998
2093
struct stat st;
1999
2094
2000
2095
if(strcmp(seckey, PATHDIR "/" SECKEY) == 0){
2040
2135
}
2041
2136
2042
2137
/* Lower privileges */
2043
lower_privileges();
2138
ret_errno = lower_privileges();
2139
if(ret_errno != 0){
2140
errno = ret_errno;
2141
perror_plus("Failed to lower privileges");
2142
}
2044
2143
}
2045
2144
}
2046
2145
2070
2169
goto end;
2071
2170
}
2072
2171
memcpy(interfaces_hooks, mc.interfaces, mc.interfaces_size);
2073
interfaces_hooks_size = mc.interfaces_size;
2074
argz_stringify(interfaces_hooks, interfaces_hooks_size,
2075
(int)',');
2076
}
2077
if(not run_network_hooks("start", interfaces_hooks != NULL ?
2078
interfaces_hooks : "", delay)){
2079
goto end;
2080
}
2172
argz_stringify(interfaces_hooks, mc.interfaces_size, (int)',');
2173
}
2174
run_network_hooks("start", interfaces_hooks != NULL ?
2175
interfaces_hooks : "", delay);
2081
2176
}
2082
2177
2083
2178
if(not debug){
2161
2256
2162
2257
/* If no interfaces were specified, make a list */
2163
2258
if(mc.interfaces == NULL){
2164
struct dirent **direntries;
2259
struct dirent **direntries = NULL;
2165
2260
/* Look for any good interfaces */
2166
2261
ret = scandir(sys_class_net, &direntries, good_interface,
2167
2262
alphasort);
2171
2266
ret_errno = argz_add(&mc.interfaces, &mc.interfaces_size,
2172
2267
direntries[i]->d_name);
2173
2268
if(ret_errno != 0){
2269
errno = ret_errno;
2174
2270
perror_plus("argz_add");
2175
2271
continue;
2176
2272
}
2181
2277
}
2182
2278
free(direntries);
2183
2279
} else {
2184
free(direntries);
2280
if(ret == 0){
2281
free(direntries);
2282
}
2185
2283
fprintf_plus(stderr, "Could not find a network interface\n");
2186
2284
exitcode = EXIT_FAILURE;
2187
2285
goto end;
2210
2308
break;
2211
2309
}
2212
2310
bool interface_was_up = interface_is_up(interface);
2213
ret = bring_up_interface(interface, delay);
2311
errno = bring_up_interface(interface, delay);
2214
2312
if(not interface_was_up){
2215
if(ret != 0){
2216
errno = ret;
2313
if(errno != 0){
2217
2314
perror_plus("Failed to bring up interface");
2218
2315
} else {
2219
ret_errno = argz_add(&interfaces_to_take_down,
2220
&interfaces_to_take_down_size,
2221
interface);
2316
errno = argz_add(&interfaces_to_take_down,
2317
&interfaces_to_take_down_size,
2318
interface);
2319
if(errno != 0){
2320
perror_plus("argz_add");
2321
}
2222
2322
}
2223
2323
}
2224
2324
}
2253
2353
goto end;
2254
2354
}
2255
2355
2256
if(mkdtemp(tempdir) == NULL){
2356
/* Try /run/tmp before /tmp */
2357
tempdir = mkdtemp(run_tempdir);
2358
if(tempdir == NULL and errno == ENOENT){
2359
if(debug){
2360
fprintf_plus(stderr, "Tempdir %s did not work, trying %s\n",
2361
run_tempdir, old_tempdir);
2362
}
2363
tempdir = mkdtemp(old_tempdir);
2364
}
2365
if(tempdir == NULL){
2257
2366
perror_plus("mkdtemp");
2258
2367
goto end;
2259
2368
}
2260
tempdir_created = true;
2261
2369
2262
2370
if(quit_now){
2263
2371
goto end;
2338
2446
sleep((unsigned int)retry_interval);
2339
2447
}
2340
2448
2341
if (not quit_now){
2449
if(not quit_now){
2342
2450
exitcode = EXIT_SUCCESS;
2343
2451
}
2344
2452
2399
2507
if(debug){
2400
2508
fprintf_plus(stderr, "Starting Avahi loop search\n");
2401
2509
}
2402
2510
2403
2511
ret = avahi_loop_with_timeout(simple_poll,
2404
2512
(int)(retry_interval * 1000), &mc);
2405
2513
if(debug){
2446
2554
}
2447
2555
}
2448
2556
2449
/* Re-raise priviliges */
2557
/* Re-raise privileges */
2450
2558
{
2451
raise_privileges();
2452
2453
/* Run network hooks */
2454
run_network_hooks("stop", interfaces_hooks != NULL ?
2455
interfaces_hooks : "", delay);
2456
2457
/* Take down the network interfaces which were brought up */
2458
{
2459
char *interface = NULL;
2460
while((interface=argz_next(interfaces_to_take_down,
2461
interfaces_to_take_down_size,
2462
interface))){
2463
ret_errno = take_down_interface(interface);
2464
if(ret_errno != 0){
2465
errno = ret_errno;
2466
perror_plus("Failed to take down interface");
2467
}
2468
}
2469
if(debug and (interfaces_to_take_down == NULL)){
2470
fprintf_plus(stderr, "No interfaces needed to be taken"
2471
" down\n");
2472
}
2473
}
2474
2475
lower_privileges_permanently();
2559
ret_errno = raise_privileges();
2560
if(ret_errno != 0){
2561
errno = ret_errno;
2562
perror_plus("Failed to raise privileges");
2563
} else {
2564
2565
/* Run network hooks */
2566
run_network_hooks("stop", interfaces_hooks != NULL ?
2567
interfaces_hooks : "", delay);
2568
2569
/* Take down the network interfaces which were brought up */
2570
{
2571
char *interface = NULL;
2572
while((interface=argz_next(interfaces_to_take_down,
2573
interfaces_to_take_down_size,
2574
interface))){
2575
ret_errno = take_down_interface(interface);
2576
if(ret_errno != 0){
2577
errno = ret_errno;
2578
perror_plus("Failed to take down interface");
2579
}
2580
}
2581
if(debug and (interfaces_to_take_down == NULL)){
2582
fprintf_plus(stderr, "No interfaces needed to be taken"
2583
" down\n");
2584
}
2585
}
2586
}
2587
2588
ret_errno = lower_privileges_permanently();
2589
if(ret_errno != 0){
2590
errno = ret_errno;
2591
perror_plus("Failed to lower privileges permanently");
2592
}
2476
2593
}
2477
2594
2478
2595
free(interfaces_to_take_down);
2479
2596
free(interfaces_hooks);
2480
2597
2481
2598
/* Removes the GPGME temp directory and all files inside */
2482
if(tempdir_created){
2599
if(tempdir != NULL){
2483
2600
struct dirent **direntries = NULL;
2484
struct dirent *direntry = NULL;
2485
int numentries = scandir(tempdir, &direntries, notdotentries,
2486
alphasort);
2487
if (numentries > 0){
2488
for(int i = 0; i < numentries; i++){
2489
direntry = direntries[i];
2490
char *fullname = NULL;
2491
ret = asprintf(&fullname, "%s/%s", tempdir,
2492
direntry->d_name);
2493
if(ret < 0){
2494
perror_plus("asprintf");
2495
continue;
2496
}
2497
ret = remove(fullname);
2498
if(ret == -1){
2499
fprintf_plus(stderr, "remove(\"%s\"): %s\n", fullname,
2500
strerror(errno));
2501
}
2502
free(fullname);
2601
int tempdir_fd = (int)TEMP_FAILURE_RETRY(open(tempdir, O_RDONLY |
2602
O_NOFOLLOW));
2603
if(tempdir_fd == -1){
2604
perror_plus("open");
2605
} else {
2606
#ifdef __GLIBC__
2607
#if __GLIBC_PREREQ(2, 15)
2608
int numentries = scandirat(tempdir_fd, ".", &direntries,
2609
notdotentries, alphasort);
2610
#else /* not __GLIBC_PREREQ(2, 15) */
2611
int numentries = scandir(tempdir, &direntries, notdotentries,
2612
alphasort);
2613
#endif /* not __GLIBC_PREREQ(2, 15) */
2614
#else /* not __GLIBC__ */
2615
int numentries = scandir(tempdir, &direntries, notdotentries,
2616
alphasort);
2617
#endif /* not __GLIBC__ */
2618
if(numentries >= 0){
2619
for(int i = 0; i < numentries; i++){
2620
ret = unlinkat(tempdir_fd, direntries[i]->d_name, 0);
2621
if(ret == -1){
2622
fprintf_plus(stderr, "unlinkat(open(\"%s\", O_RDONLY),"
2623
" \"%s\", 0): %s\n", tempdir,
2624
direntries[i]->d_name, strerror(errno));
2625
}
2626
}
2627
2628
/* need to clean even if 0 because man page doesn't specify */
2629
free(direntries);
2630
if(numentries == -1){
2631
perror_plus("scandir");
2632
}
2633
ret = rmdir(tempdir);
2634
if(ret == -1 and errno != ENOENT){
2635
perror_plus("rmdir");
2636
}
2503
2637
}
2504
}
2505
2506
/* need to clean even if 0 because man page doesn't specify */
2507
free(direntries);
2508
if (numentries == -1){
2509
perror_plus("scandir");
2510
}
2511
ret = rmdir(tempdir);
2512
if(ret == -1 and errno != ENOENT){
2513
perror_plus("rmdir");
2638
TEMP_FAILURE_RETRY(close(tempdir_fd));
2514
2639
}
2515
2640
}
2516
2641
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0