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- Committer: Teddy Hogeborn
- Date: 2014-03-06 02:26:04 UTC
- Revision ID: teddy@recompile.se-20140306022604-4uc43taz25cflgi3
Bug fix: Free all memory and give better messages when memory is full.
* plugin-runner.c (add_to_char_array): Bug fix: If realloc fails, do
not change old array pointer.
(add_environment): Bug fix: If realloc fails, do not change old
environment pointer. Also rename "e" to "envdef"
for clarity.
(main): Bug fix: If realloc fails, do not change old pointers. Also
wrap "#pragma GCC" with "#ifdef ___GNUC___".
* plugins.d/mandos-client.c (incbuffer): Bug fix: if realloc fails,
free old buffer.
(run_network_hooks): Moved variables "directory" and "ret" to their
innermost possible scope.
(take_down_interface): Moved variables "sd", "ret_errno", and
"ret_setflags" to their innermost possible
scope.
(main): Removed variable "interfaces_hooks_size". Also, if argz_add
fails when adding all found interfaces, the error message
will now be correct. Also print error message if, after
having taken up an interface, argz_add fails to add
interface to list of interfaces to be taken down.
* plugins.d/mandos-client.xml (OPTIONS): Explain better what "none"
means as argument to
"--interface" by negating
sense.
* plugins.d/password-prompt.c (fprintf_plus): Removed (unused).
* plugin-runner.c (add_to_char_array): Bug fix: If realloc fails, do
not change old array pointer.
(add_environment): Bug fix: If realloc fails, do not change old
environment pointer. Also rename "e" to "envdef"
for clarity.
(main): Bug fix: If realloc fails, do not change old pointers. Also
wrap "#pragma GCC" with "#ifdef ___GNUC___".
* plugins.d/mandos-client.c (incbuffer): Bug fix: if realloc fails,
free old buffer.
(run_network_hooks): Moved variables "directory" and "ret" to their
innermost possible scope.
(take_down_interface): Moved variables "sd", "ret_errno", and
"ret_setflags" to their innermost possible
scope.
(main): Removed variable "interfaces_hooks_size". Also, if argz_add
fails when adding all found interfaces, the error message
will now be correct. Also print error message if, after
having taken up an interface, argz_add fails to add
interface to list of interfaces to be taken down.
* plugins.d/mandos-client.xml (OPTIONS): Explain better what "none"
means as argument to
"--interface" by negating
sense.
* plugins.d/password-prompt.c (fprintf_plus): Removed (unused).
- files added:
- debian/upstream-signing-key.pgp
- files removed:
- 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 © 2008-2014 Teddy Hogeborn
13
* Copyright © 2008-2014 Björn Påhlsson
12
* Copyright © 2008-2013 Teddy Hogeborn
13
* Copyright © 2008-2013 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 /* not _LARGEFILE_SOURCE */
35
#endif
36
36
#ifndef _FILE_OFFSET_BITS
37
37
#define _FILE_OFFSET_BITS 64
38
#endif /* not _FILE_OFFSET_BITS */
38
#endif
39
39
40
40
#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), asprintf() */
41
41
42
42
#include <stdio.h> /* fprintf(), stderr, fwrite(),
43
stdout, ferror() */
43
stdout, ferror(), remove() */
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
getnameinfo() */
60
#include <fcntl.h> /* open(), unlinkat() */
58
inet_pton(), connect() */
59
#include <fcntl.h> /* open() */
61
60
#include <dirent.h> /* opendir(), struct dirent, readdir()
62
61
*/
63
62
#include <inttypes.h> /* PRIu16, PRIdMAX, intmax_t,
73
72
*/
74
73
#include <unistd.h> /* close(), SEEK_SET, off_t, write(),
75
74
getuid(), getgid(), seteuid(),
76
setgid(), pause(), _exit(),
77
unlinkat() */
78
#include <arpa/inet.h> /* inet_pton(), htons() */
75
setgid(), pause(), _exit() */
76
#include <arpa/inet.h> /* inet_pton(), htons, inet_ntop() */
79
77
#include <iso646.h> /* not, or, and */
80
78
#include <argp.h> /* struct argp_option, error_t, struct
81
79
argp_state, struct argp,
93
91
argz_delete(), argz_append(),
94
92
argz_stringify(), argz_add(),
95
93
argz_count() */
96
#include <netdb.h> /* getnameinfo(), NI_NUMERICHOST,
97
EAI_SYSTEM, gai_strerror() */
98
94
99
95
#ifdef __linux__
100
96
#include <sys/klog.h> /* klogctl() */
142
138
static const char sys_class_net[] = "/sys/class/net";
143
139
char *connect_to = NULL;
144
140
const char *hookdir = HOOKDIR;
145
int hookdir_fd = -1;
146
141
uid_t uid = 65534;
147
142
gid_t gid = 65534;
148
143
185
180
perror(print_text);
186
181
}
187
182
188
__attribute__((format (gnu_printf, 2, 3), nonnull))
183
__attribute__((format (gnu_printf, 2, 3)))
189
184
int fprintf_plus(FILE *stream, const char *format, ...){
190
185
va_list ap;
191
186
va_start (ap, format);
200
195
* bytes. "buffer_capacity" is how much is currently allocated,
201
196
* "buffer_length" is how much is already used.
202
197
*/
203
__attribute__((nonnull, warn_unused_result))
204
198
size_t incbuffer(char **buffer, size_t buffer_length,
205
199
size_t buffer_capacity){
206
200
if(buffer_length + BUFFER_SIZE > buffer_capacity){
219
213
}
220
214
221
215
/* Add server to set of servers to retry periodically */
222
__attribute__((nonnull, warn_unused_result))
223
216
bool add_server(const char *ip, in_port_t port, AvahiIfIndex if_index,
224
217
int af, server **current_server){
225
218
int ret;
234
227
.af = af };
235
228
if(new_server->ip == NULL){
236
229
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
#ifdef __GNUC__
244
#pragma GCC diagnostic push
245
#pragma GCC diagnostic ignored "-Wcast-qual"
246
#endif
247
free((char *)(new_server->ip));
248
#ifdef __GNUC__
249
#pragma GCC diagnostic pop
250
#endif
251
free(new_server);
252
230
return false;
253
231
}
254
232
/* Special case of first server */
256
234
new_server->next = new_server;
257
235
new_server->prev = new_server;
258
236
*current_server = new_server;
237
/* Place the new server last in the list */
259
238
} else {
260
/* Place the new server last in the list */
261
239
new_server->next = *current_server;
262
240
new_server->prev = (*current_server)->prev;
263
241
new_server->prev->next = new_server;
264
242
(*current_server)->prev = new_server;
265
243
}
244
ret = clock_gettime(CLOCK_MONOTONIC, &(*current_server)->last_seen);
245
if(ret == -1){
246
perror_plus("clock_gettime");
247
return false;
248
}
266
249
return true;
267
250
}
268
251
269
252
/*
270
253
* Initialize GPGME.
271
254
*/
272
__attribute__((nonnull, warn_unused_result))
273
static bool init_gpgme(const char * const seckey,
274
const char * const pubkey,
275
const char * const tempdir,
276
mandos_context *mc){
255
static bool init_gpgme(const char *seckey, const char *pubkey,
256
const char *tempdir, mandos_context *mc){
277
257
gpgme_error_t rc;
278
258
gpgme_engine_info_t engine_info;
279
259
280
260
/*
281
261
* Helper function to insert pub and seckey to the engine keyring.
282
262
*/
283
bool import_key(const char * const filename){
263
bool import_key(const char *filename){
284
264
int ret;
285
265
int fd;
286
266
gpgme_data_t pgp_data;
367
347
* Decrypt OpenPGP data.
368
348
* Returns -1 on error
369
349
*/
370
__attribute__((nonnull, warn_unused_result))
371
350
static ssize_t pgp_packet_decrypt(const char *cryptotext,
372
351
size_t crypto_size,
373
352
char **plaintext,
493
472
return plaintext_length;
494
473
}
495
474
496
__attribute__((warn_unused_result))
497
static const char *safer_gnutls_strerror(int value){
475
static const char * safer_gnutls_strerror(int value){
498
476
const char *ret = gnutls_strerror(value);
499
477
if(ret == NULL)
500
478
ret = "(unknown)";
502
480
}
503
481
504
482
/* GnuTLS log function callback */
505
__attribute__((nonnull))
506
483
static void debuggnutls(__attribute__((unused)) int level,
507
484
const char* string){
508
485
fprintf_plus(stderr, "GnuTLS: %s", string);
509
486
}
510
487
511
__attribute__((nonnull, warn_unused_result))
512
488
static int init_gnutls_global(const char *pubkeyfilename,
513
489
const char *seckeyfilename,
514
490
mandos_context *mc){
588
564
return -1;
589
565
}
590
566
591
__attribute__((nonnull, warn_unused_result))
592
567
static int init_gnutls_session(gnutls_session_t *session,
593
568
mandos_context *mc){
594
569
int ret;
651
626
__attribute__((unused)) const char *txt){}
652
627
653
628
/* Called when a Mandos server is found */
654
__attribute__((nonnull, warn_unused_result))
655
629
static int start_mandos_communication(const char *ip, in_port_t port,
656
630
AvahiIfIndex if_index,
657
631
int af, mandos_context *mc){
658
632
int ret, tcp_sd = -1;
659
633
ssize_t sret;
660
struct sockaddr_storage to;
634
union {
635
struct sockaddr_in in;
636
struct sockaddr_in6 in6;
637
} to;
661
638
char *buffer = NULL;
662
639
char *decrypted_buffer = NULL;
663
640
size_t buffer_length = 0;
744
721
745
722
memset(&to, 0, sizeof(to));
746
723
if(af == AF_INET6){
747
((struct sockaddr_in6 *)&to)->sin6_family = (sa_family_t)af;
748
ret = inet_pton(af, ip, &((struct sockaddr_in6 *)&to)->sin6_addr);
724
to.in6.sin6_family = (sa_family_t)af;
725
ret = inet_pton(af, ip, &to.in6.sin6_addr);
749
726
} else { /* IPv4 */
750
((struct sockaddr_in *)&to)->sin_family = (sa_family_t)af;
751
ret = inet_pton(af, ip, &((struct sockaddr_in *)&to)->sin_addr);
727
to.in.sin_family = (sa_family_t)af;
728
ret = inet_pton(af, ip, &to.in.sin_addr);
752
729
}
753
730
if(ret < 0 ){
754
731
int e = errno;
763
740
goto mandos_end;
764
741
}
765
742
if(af == AF_INET6){
766
((struct sockaddr_in6 *)&to)->sin6_port = htons(port);
767
if(IN6_IS_ADDR_LINKLOCAL
768
(&((struct sockaddr_in6 *)&to)->sin6_addr)){
743
to.in6.sin6_port = htons(port);
744
#ifdef __GNUC__
745
#pragma GCC diagnostic push
746
#pragma GCC diagnostic ignored "-Wstrict-aliasing"
747
#endif
748
if(IN6_IS_ADDR_LINKLOCAL /* Spurious warnings from */
749
(&to.in6.sin6_addr)){ /* -Wstrict-aliasing=2 or lower */
750
#ifdef __GNUC__
751
#pragma GCC diagnostic pop
752
#endif
769
753
if(if_index == AVAHI_IF_UNSPEC){
770
754
fprintf_plus(stderr, "An IPv6 link-local address is"
771
755
" incomplete without a network interface\n");
773
757
goto mandos_end;
774
758
}
775
759
/* Set the network interface number as scope */
776
((struct sockaddr_in6 *)&to)->sin6_scope_id = (uint32_t)if_index;
760
to.in6.sin6_scope_id = (uint32_t)if_index;
777
761
}
778
762
} else {
779
((struct sockaddr_in *)&to)->sin_port = htons(port);
763
to.in.sin_port = htons(port);
780
764
}
781
765
782
766
if(quit_now){
799
783
}
800
784
char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
801
785
INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
786
const char *pcret;
802
787
if(af == AF_INET6){
803
ret = getnameinfo((struct sockaddr *)&to,
804
sizeof(struct sockaddr_in6),
805
addrstr, sizeof(addrstr), NULL, 0,
806
NI_NUMERICHOST);
788
pcret = inet_ntop(af, &(to.in6.sin6_addr), addrstr,
789
sizeof(addrstr));
807
790
} else {
808
ret = getnameinfo((struct sockaddr *)&to,
809
sizeof(struct sockaddr_in),
810
addrstr, sizeof(addrstr), NULL, 0,
811
NI_NUMERICHOST);
791
pcret = inet_ntop(af, &(to.in.sin_addr), addrstr,
792
sizeof(addrstr));
812
793
}
813
if(ret == EAI_SYSTEM){
814
perror_plus("getnameinfo");
815
} else if(ret != 0) {
816
fprintf_plus(stderr, "getnameinfo: %s", gai_strerror(ret));
817
} else if(strcmp(addrstr, ip) != 0){
818
fprintf_plus(stderr, "Canonical address form: %s\n", addrstr);
794
if(pcret == NULL){
795
perror_plus("inet_ntop");
796
} else {
797
if(strcmp(addrstr, ip) != 0){
798
fprintf_plus(stderr, "Canonical address form: %s\n", addrstr);
799
}
819
800
}
820
801
}
821
802
825
806
}
826
807
827
808
if(af == AF_INET6){
828
ret = connect(tcp_sd, (struct sockaddr *)&to,
829
sizeof(struct sockaddr_in6));
809
ret = connect(tcp_sd, &to.in6, sizeof(to));
830
810
} else {
831
ret = connect(tcp_sd, (struct sockaddr *)&to, /* IPv4 */
832
sizeof(struct sockaddr_in));
811
ret = connect(tcp_sd, &to.in, sizeof(to)); /* IPv4 */
833
812
}
834
813
if(ret < 0){
835
if((errno != ECONNREFUSED and errno != ENETUNREACH) or debug){
814
if ((errno != ECONNREFUSED and errno != ENETUNREACH) or debug){
836
815
int e = errno;
837
816
perror_plus("connect");
838
817
errno = e;
1053
1032
return retval;
1054
1033
}
1055
1034
1056
__attribute__((nonnull))
1057
1035
static void resolve_callback(AvahiSServiceResolver *r,
1058
1036
AvahiIfIndex interface,
1059
1037
AvahiProtocol proto,
1067
1045
AVAHI_GCC_UNUSED AvahiStringList *txt,
1068
1046
AVAHI_GCC_UNUSED AvahiLookupResultFlags
1069
1047
flags,
1070
void *mc){
1048
void* mc){
1071
1049
if(r == NULL){
1072
1050
return;
1073
1051
}
1076
1054
timed out */
1077
1055
1078
1056
if(quit_now){
1079
avahi_s_service_resolver_free(r);
1080
1057
return;
1081
1058
}
1082
1059
1127
1104
const char *domain,
1128
1105
AVAHI_GCC_UNUSED AvahiLookupResultFlags
1129
1106
flags,
1130
void *mc){
1107
void* mc){
1131
1108
if(b == NULL){
1132
1109
return;
1133
1110
}
1193
1170
errno = old_errno;
1194
1171
}
1195
1172
1196
__attribute__((nonnull, warn_unused_result))
1197
1173
bool get_flags(const char *ifname, struct ifreq *ifr){
1198
1174
int ret;
1199
1175
error_t ret_errno;
1218
1194
return true;
1219
1195
}
1220
1196
1221
__attribute__((nonnull, warn_unused_result))
1222
1197
bool good_flags(const char *ifname, const struct ifreq *ifr){
1223
1198
1224
1199
/* Reject the loopback device */
1266
1241
* corresponds to an acceptable network device.
1267
1242
* (This function is passed to scandir(3) as a filter function.)
1268
1243
*/
1269
__attribute__((nonnull, warn_unused_result))
1270
1244
int good_interface(const struct dirent *if_entry){
1271
1245
if(if_entry->d_name[0] == '.'){
1272
1246
return 0;
1290
1264
/*
1291
1265
* This function determines if a network interface is up.
1292
1266
*/
1293
__attribute__((nonnull, warn_unused_result))
1294
1267
bool interface_is_up(const char *interface){
1295
1268
struct ifreq ifr;
1296
1269
if(not get_flags(interface, &ifr)){
1307
1280
/*
1308
1281
* This function determines if a network interface is running
1309
1282
*/
1310
__attribute__((nonnull, warn_unused_result))
1311
1283
bool interface_is_running(const char *interface){
1312
1284
struct ifreq ifr;
1313
1285
if(not get_flags(interface, &ifr)){
1321
1293
return (bool)(ifr.ifr_flags & IFF_RUNNING);
1322
1294
}
1323
1295
1324
__attribute__((nonnull, pure, warn_unused_result))
1325
1296
int notdotentries(const struct dirent *direntry){
1326
1297
/* Skip "." and ".." */
1327
1298
if(direntry->d_name[0] == '.'
1334
1305
}
1335
1306
1336
1307
/* Is this directory entry a runnable program? */
1337
__attribute__((nonnull, warn_unused_result))
1338
1308
int runnable_hook(const struct dirent *direntry){
1339
1309
int ret;
1340
1310
size_t sret;
1348
1318
sret = strspn(direntry->d_name, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1349
1319
"abcdefghijklmnopqrstuvwxyz"
1350
1320
"0123456789"
1351
"_.-");
1321
"_-");
1352
1322
if((direntry->d_name)[sret] != '\0'){
1353
1323
/* Contains non-allowed characters */
1354
1324
if(debug){
1358
1328
return 0;
1359
1329
}
1360
1330
1361
ret = fstatat(hookdir_fd, direntry->d_name, &st, 0);
1331
char *fullname = NULL;
1332
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1333
if(ret < 0){
1334
perror_plus("asprintf");
1335
return 0;
1336
}
1337
1338
ret = stat(fullname, &st);
1362
1339
if(ret == -1){
1363
1340
if(debug){
1364
1341
perror_plus("Could not stat hook");
1388
1365
return 1;
1389
1366
}
1390
1367
1391
__attribute__((nonnull, warn_unused_result))
1392
1368
int avahi_loop_with_timeout(AvahiSimplePoll *s, int retry_interval,
1393
1369
mandos_context *mc){
1394
1370
int ret;
1398
1374
1399
1375
while(true){
1400
1376
if(mc->current_server == NULL){
1401
if(debug){
1377
if (debug){
1402
1378
fprintf_plus(stderr, "Wait until first server is found."
1403
1379
" No timeout!\n");
1404
1380
}
1405
1381
ret = avahi_simple_poll_iterate(s, -1);
1406
1382
} else {
1407
if(debug){
1383
if (debug){
1408
1384
fprintf_plus(stderr, "Check current_server if we should run"
1409
1385
" it, or wait\n");
1410
1386
}
1427
1403
- ((intmax_t)waited_time.tv_sec * 1000))
1428
1404
- ((intmax_t)waited_time.tv_nsec / 1000000));
1429
1405
1430
if(debug){
1406
if (debug){
1431
1407
fprintf_plus(stderr, "Blocking for %" PRIdMAX " ms\n",
1432
1408
block_time);
1433
1409
}
1455
1431
ret = avahi_simple_poll_iterate(s, (int)block_time);
1456
1432
}
1457
1433
if(ret != 0){
1458
if(ret > 0 or errno != EINTR){
1434
if (ret > 0 or errno != EINTR){
1459
1435
return (ret != 1) ? ret : 0;
1460
1436
}
1461
1437
}
1463
1439
}
1464
1440
1465
1441
/* Set effective uid to 0, return errno */
1466
__attribute__((warn_unused_result))
1467
1442
error_t raise_privileges(void){
1468
1443
error_t old_errno = errno;
1469
1444
error_t ret_errno = 0;
1470
1445
if(seteuid(0) == -1){
1471
1446
ret_errno = errno;
1447
perror_plus("seteuid");
1472
1448
}
1473
1449
errno = old_errno;
1474
1450
return ret_errno;
1475
1451
}
1476
1452
1477
1453
/* Set effective and real user ID to 0. Return errno. */
1478
__attribute__((warn_unused_result))
1479
1454
error_t raise_privileges_permanently(void){
1480
1455
error_t old_errno = errno;
1481
1456
error_t ret_errno = raise_privileges();
1485
1460
}
1486
1461
if(setuid(0) == -1){
1487
1462
ret_errno = errno;
1463
perror_plus("seteuid");
1488
1464
}
1489
1465
errno = old_errno;
1490
1466
return ret_errno;
1491
1467
}
1492
1468
1493
1469
/* Set effective user ID to unprivileged saved user ID */
1494
__attribute__((warn_unused_result))
1495
1470
error_t lower_privileges(void){
1496
1471
error_t old_errno = errno;
1497
1472
error_t ret_errno = 0;
1498
1473
if(seteuid(uid) == -1){
1499
1474
ret_errno = errno;
1475
perror_plus("seteuid");
1500
1476
}
1501
1477
errno = old_errno;
1502
1478
return ret_errno;
1503
1479
}
1504
1480
1505
1481
/* Lower privileges permanently */
1506
__attribute__((warn_unused_result))
1507
1482
error_t lower_privileges_permanently(void){
1508
1483
error_t old_errno = errno;
1509
1484
error_t ret_errno = 0;
1510
1485
if(setuid(uid) == -1){
1511
1486
ret_errno = errno;
1487
perror_plus("setuid");
1512
1488
}
1513
1489
errno = old_errno;
1514
1490
return ret_errno;
1515
1491
}
1516
1492
1517
__attribute__((nonnull))
1518
void run_network_hooks(const char *mode, const char *interface,
1493
bool run_network_hooks(const char *mode, const char *interface,
1519
1494
const float delay){
1520
struct dirent **direntries = NULL;
1521
if(hookdir_fd == -1){
1522
hookdir_fd = open(hookdir, O_RDONLY);
1523
if(hookdir_fd == -1){
1524
if(errno == ENOENT){
1525
if(debug){
1526
fprintf_plus(stderr, "Network hook directory \"%s\" not"
1527
" found\n", hookdir);
1528
}
1529
} else {
1530
perror_plus("open");
1531
}
1532
return;
1533
}
1534
}
1535
#ifdef __GLIBC__
1536
#if __GLIBC_PREREQ(2, 15)
1537
int numhooks = scandirat(hookdir_fd, ".", &direntries,
1538
runnable_hook, alphasort);
1539
#else /* not __GLIBC_PREREQ(2, 15) */
1540
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1541
alphasort);
1542
#endif /* not __GLIBC_PREREQ(2, 15) */
1543
#else /* not __GLIBC__ */
1544
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1545
alphasort);
1546
#endif /* not __GLIBC__ */
1495
struct dirent **direntries;
1496
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1497
alphasort);
1547
1498
if(numhooks == -1){
1548
perror_plus("scandir");
1549
return;
1550
}
1551
struct dirent *direntry;
1552
int ret;
1553
int devnull = open("/dev/null", O_RDONLY);
1554
for(int i = 0; i < numhooks; i++){
1555
direntry = direntries[i];
1556
if(debug){
1557
fprintf_plus(stderr, "Running network hook \"%s\"\n",
1558
direntry->d_name);
1499
if(errno == ENOENT){
1500
if(debug){
1501
fprintf_plus(stderr, "Network hook directory \"%s\" not"
1502
" found\n", hookdir);
1503
}
1504
} else {
1505
perror_plus("scandir");
1559
1506
}
1560
pid_t hook_pid = fork();
1561
if(hook_pid == 0){
1562
/* Child */
1563
/* Raise privileges */
1564
errno = raise_privileges_permanently();
1565
if(errno != 0){
1566
perror_plus("Failed to raise privileges");
1567
_exit(EX_NOPERM);
1568
}
1569
/* Set group */
1570
errno = 0;
1571
ret = setgid(0);
1572
if(ret == -1){
1573
perror_plus("setgid");
1574
_exit(EX_NOPERM);
1575
}
1576
/* Reset supplementary groups */
1577
errno = 0;
1578
ret = setgroups(0, NULL);
1579
if(ret == -1){
1580
perror_plus("setgroups");
1581
_exit(EX_NOPERM);
1582
}
1583
ret = dup2(devnull, STDIN_FILENO);
1584
if(ret == -1){
1585
perror_plus("dup2(devnull, STDIN_FILENO)");
1586
_exit(EX_OSERR);
1587
}
1588
ret = close(devnull);
1589
if(ret == -1){
1590
perror_plus("close");
1591
_exit(EX_OSERR);
1592
}
1593
ret = dup2(STDERR_FILENO, STDOUT_FILENO);
1594
if(ret == -1){
1595
perror_plus("dup2(STDERR_FILENO, STDOUT_FILENO)");
1596
_exit(EX_OSERR);
1597
}
1598
ret = setenv("MANDOSNETHOOKDIR", hookdir, 1);
1599
if(ret == -1){
1600
perror_plus("setenv");
1601
_exit(EX_OSERR);
1602
}
1603
ret = setenv("DEVICE", interface, 1);
1604
if(ret == -1){
1605
perror_plus("setenv");
1606
_exit(EX_OSERR);
1607
}
1608
ret = setenv("VERBOSITY", debug ? "1" : "0", 1);
1609
if(ret == -1){
1610
perror_plus("setenv");
1611
_exit(EX_OSERR);
1612
}
1613
ret = setenv("MODE", mode, 1);
1614
if(ret == -1){
1615
perror_plus("setenv");
1616
_exit(EX_OSERR);
1617
}
1618
char *delaystring;
1619
ret = asprintf(&delaystring, "%f", (double)delay);
1620
if(ret == -1){
1507
} else {
1508
struct dirent *direntry;
1509
int ret;
1510
int devnull = open("/dev/null", O_RDONLY);
1511
for(int i = 0; i < numhooks; i++){
1512
direntry = direntries[i];
1513
char *fullname = NULL;
1514
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1515
if(ret < 0){
1621
1516
perror_plus("asprintf");
1622
_exit(EX_OSERR);
1623
}
1624
ret = setenv("DELAY", delaystring, 1);
1625
if(ret == -1){
1517
continue;
1518
}
1519
if(debug){
1520
fprintf_plus(stderr, "Running network hook \"%s\"\n",
1521
direntry->d_name);
1522
}
1523
pid_t hook_pid = fork();
1524
if(hook_pid == 0){
1525
/* Child */
1526
/* Raise privileges */
1527
raise_privileges_permanently();
1528
/* Set group */
1529
errno = 0;
1530
ret = setgid(0);
1531
if(ret == -1){
1532
perror_plus("setgid");
1533
}
1534
/* Reset supplementary groups */
1535
errno = 0;
1536
ret = setgroups(0, NULL);
1537
if(ret == -1){
1538
perror_plus("setgroups");
1539
}
1540
dup2(devnull, STDIN_FILENO);
1541
close(devnull);
1542
dup2(STDERR_FILENO, STDOUT_FILENO);
1543
ret = setenv("MANDOSNETHOOKDIR", hookdir, 1);
1544
if(ret == -1){
1545
perror_plus("setenv");
1546
_exit(EX_OSERR);
1547
}
1548
ret = setenv("DEVICE", interface, 1);
1549
if(ret == -1){
1550
perror_plus("setenv");
1551
_exit(EX_OSERR);
1552
}
1553
ret = setenv("VERBOSITY", debug ? "1" : "0", 1);
1554
if(ret == -1){
1555
perror_plus("setenv");
1556
_exit(EX_OSERR);
1557
}
1558
ret = setenv("MODE", mode, 1);
1559
if(ret == -1){
1560
perror_plus("setenv");
1561
_exit(EX_OSERR);
1562
}
1563
char *delaystring;
1564
ret = asprintf(&delaystring, "%f", delay);
1565
if(ret == -1){
1566
perror_plus("asprintf");
1567
_exit(EX_OSERR);
1568
}
1569
ret = setenv("DELAY", delaystring, 1);
1570
if(ret == -1){
1571
free(delaystring);
1572
perror_plus("setenv");
1573
_exit(EX_OSERR);
1574
}
1626
1575
free(delaystring);
1627
perror_plus("setenv");
1628
_exit(EX_OSERR);
1629
}
1630
free(delaystring);
1631
if(connect_to != NULL){
1632
ret = setenv("CONNECT", connect_to, 1);
1633
if(ret == -1){
1634
perror_plus("setenv");
1635
_exit(EX_OSERR);
1636
}
1637
}
1638
int hook_fd = openat(hookdir_fd, direntry->d_name, O_RDONLY);
1639
if(hook_fd == -1){
1640
perror_plus("openat");
1641
_exit(EXIT_FAILURE);
1642
}
1643
if((int)TEMP_FAILURE_RETRY(close(hookdir_fd)) == -1){
1644
perror_plus("close");
1645
_exit(EXIT_FAILURE);
1646
}
1647
if(fexecve(hook_fd, (char *const []){ direntry->d_name, NULL },
1648
environ) == -1){
1649
perror_plus("fexecve");
1650
_exit(EXIT_FAILURE);
1651
}
1652
} else {
1653
int status;
1654
if(TEMP_FAILURE_RETRY(waitpid(hook_pid, &status, 0)) == -1){
1655
perror_plus("waitpid");
1656
free(direntry);
1657
continue;
1658
}
1659
if(WIFEXITED(status)){
1660
if(WEXITSTATUS(status) != 0){
1661
fprintf_plus(stderr, "Warning: network hook \"%s\" exited"
1662
" with status %d\n", direntry->d_name,
1663
WEXITSTATUS(status));
1664
free(direntry);
1665
continue;
1666
}
1667
} else if(WIFSIGNALED(status)){
1668
fprintf_plus(stderr, "Warning: network hook \"%s\" died by"
1669
" signal %d\n", direntry->d_name,
1670
WTERMSIG(status));
1671
free(direntry);
1672
continue;
1576
if(connect_to != NULL){
1577
ret = setenv("CONNECT", connect_to, 1);
1578
if(ret == -1){
1579
perror_plus("setenv");
1580
_exit(EX_OSERR);
1581
}
1582
}
1583
if(execl(fullname, direntry->d_name, mode, NULL) == -1){
1584
perror_plus("execl");
1585
_exit(EXIT_FAILURE);
1586
}
1673
1587
} else {
1674
fprintf_plus(stderr, "Warning: network hook \"%s\""
1675
" crashed\n", direntry->d_name);
1676
free(direntry);
1677
continue;
1678
}
1679
}
1680
if(debug){
1681
fprintf_plus(stderr, "Network hook \"%s\" ran successfully\n",
1682
direntry->d_name);
1683
}
1684
free(direntry);
1685
}
1686
free(direntries);
1687
if((int)TEMP_FAILURE_RETRY(close(hookdir_fd)) == -1){
1688
perror_plus("close");
1689
} else {
1690
hookdir_fd = -1;
1691
}
1692
close(devnull);
1588
int status;
1589
if(TEMP_FAILURE_RETRY(waitpid(hook_pid, &status, 0)) == -1){
1590
perror_plus("waitpid");
1591
free(fullname);
1592
continue;
1593
}
1594
if(WIFEXITED(status)){
1595
if(WEXITSTATUS(status) != 0){
1596
fprintf_plus(stderr, "Warning: network hook \"%s\" exited"
1597
" with status %d\n", direntry->d_name,
1598
WEXITSTATUS(status));
1599
free(fullname);
1600
continue;
1601
}
1602
} else if(WIFSIGNALED(status)){
1603
fprintf_plus(stderr, "Warning: network hook \"%s\" died by"
1604
" signal %d\n", direntry->d_name,
1605
WTERMSIG(status));
1606
free(fullname);
1607
continue;
1608
} else {
1609
fprintf_plus(stderr, "Warning: network hook \"%s\""
1610
" crashed\n", direntry->d_name);
1611
free(fullname);
1612
continue;
1613
}
1614
}
1615
free(fullname);
1616
if(debug){
1617
fprintf_plus(stderr, "Network hook \"%s\" ran successfully\n",
1618
direntry->d_name);
1619
}
1620
}
1621
close(devnull);
1622
}
1623
return true;
1693
1624
}
1694
1625
1695
__attribute__((nonnull, warn_unused_result))
1696
1626
error_t bring_up_interface(const char *const interface,
1697
1627
const float delay){
1628
int sd = -1;
1698
1629
error_t old_errno = errno;
1699
int ret;
1630
error_t ret_errno = 0;
1631
int ret, ret_setflags;
1700
1632
struct ifreq network;
1701
1633
unsigned int if_index = if_nametoindex(interface);
1702
1634
if(if_index == 0){
1711
1643
}
1712
1644
1713
1645
if(not interface_is_up(interface)){
1714
error_t ret_errno = 0, ioctl_errno = 0;
1715
if(not get_flags(interface, &network)){
1646
if(not get_flags(interface, &network) and debug){
1716
1647
ret_errno = errno;
1717
1648
fprintf_plus(stderr, "Failed to get flags for interface "
1718
1649
"\"%s\"\n", interface);
1719
errno = old_errno;
1720
1650
return ret_errno;
1721
1651
}
1722
network.ifr_flags |= IFF_UP; /* set flag */
1652
network.ifr_flags |= IFF_UP;
1723
1653
1724
int sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1725
if(sd == -1){
1654
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1655
if(sd < 0){
1726
1656
ret_errno = errno;
1727
1657
perror_plus("socket");
1728
1658
errno = old_errno;
1729
1659
return ret_errno;
1730
1660
}
1731
1661
1732
1662
if(quit_now){
1733
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1734
if(ret == -1){
1735
perror_plus("close");
1736
}
1663
close(sd);
1737
1664
errno = old_errno;
1738
1665
return EINTR;
1739
1666
}
1743
1670
interface);
1744
1671
}
1745
1672
1746
/* Raise privileges */
1747
ret_errno = raise_privileges();
1748
if(ret_errno != 0){
1749
errno = ret_errno;
1750
perror_plus("Failed to raise privileges");
1751
}
1673
/* Raise priviliges */
1674
raise_privileges();
1752
1675
1753
1676
#ifdef __linux__
1754
int ret_linux;
1755
bool restore_loglevel = false;
1756
if(ret_errno == 0){
1757
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1758
messages about the network interface to mess up the prompt */
1759
ret_linux = klogctl(8, NULL, 5);
1760
if(ret_linux == -1){
1761
perror_plus("klogctl");
1762
} else {
1763
restore_loglevel = true;
1764
}
1677
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1678
messages about the network interface to mess up the prompt */
1679
int ret_linux = klogctl(8, NULL, 5);
1680
bool restore_loglevel = true;
1681
if(ret_linux == -1){
1682
restore_loglevel = false;
1683
perror_plus("klogctl");
1765
1684
}
1766
1685
#endif /* __linux__ */
1767
int ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
1768
ioctl_errno = errno;
1686
ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
1687
ret_errno = errno;
1769
1688
#ifdef __linux__
1770
1689
if(restore_loglevel){
1771
1690
ret_linux = klogctl(7, NULL, 0);
1775
1694
}
1776
1695
#endif /* __linux__ */
1777
1696
1778
/* If raise_privileges() succeeded above */
1779
if(ret_errno == 0){
1780
/* Lower privileges */
1781
ret_errno = lower_privileges();
1782
if(ret_errno != 0){
1783
errno = ret_errno;
1784
perror_plus("Failed to lower privileges");
1785
}
1786
}
1697
/* Lower privileges */
1698
lower_privileges();
1787
1699
1788
1700
/* Close the socket */
1789
1701
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1792
1704
}
1793
1705
1794
1706
if(ret_setflags == -1){
1795
errno = ioctl_errno;
1707
errno = ret_errno;
1796
1708
perror_plus("ioctl SIOCSIFFLAGS +IFF_UP");
1797
1709
errno = old_errno;
1798
return ioctl_errno;
1710
return ret_errno;
1799
1711
}
1800
1712
} else if(debug){
1801
1713
fprintf_plus(stderr, "Interface \"%s\" is already up; good\n",
1819
1731
return 0;
1820
1732
}
1821
1733
1822
__attribute__((nonnull, warn_unused_result))
1823
1734
error_t take_down_interface(const char *const interface){
1824
1735
error_t old_errno = errno;
1825
1736
struct ifreq network;
1830
1741
return ENXIO;
1831
1742
}
1832
1743
if(interface_is_up(interface)){
1833
error_t ret_errno = 0, ioctl_errno = 0;
1744
error_t ret_errno = 0;
1834
1745
if(not get_flags(interface, &network) and debug){
1835
1746
ret_errno = errno;
1836
1747
fprintf_plus(stderr, "Failed to get flags for interface "
1837
1748
"\"%s\"\n", interface);
1838
errno = old_errno;
1839
1749
return ret_errno;
1840
1750
}
1841
1751
network.ifr_flags &= ~(short)IFF_UP; /* clear flag */
1842
1752
1843
1753
int sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1844
if(sd == -1){
1754
if(sd < 0){
1845
1755
ret_errno = errno;
1846
1756
perror_plus("socket");
1847
1757
errno = old_errno;
1853
1763
interface);
1854
1764
}
1855
1765
1856
/* Raise privileges */
1857
ret_errno = raise_privileges();
1858
if(ret_errno != 0){
1859
errno = ret_errno;
1860
perror_plus("Failed to raise privileges");
1861
}
1766
/* Raise priviliges */
1767
raise_privileges();
1862
1768
1863
1769
int ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
1864
ioctl_errno = errno;
1770
ret_errno = errno;
1865
1771
1866
/* If raise_privileges() succeeded above */
1867
if(ret_errno == 0){
1868
/* Lower privileges */
1869
ret_errno = lower_privileges();
1870
if(ret_errno != 0){
1871
errno = ret_errno;
1872
perror_plus("Failed to lower privileges");
1873
}
1874
}
1772
/* Lower privileges */
1773
lower_privileges();
1875
1774
1876
1775
/* Close the socket */
1877
1776
int ret = (int)TEMP_FAILURE_RETRY(close(sd));
1880
1779
}
1881
1780
1882
1781
if(ret_setflags == -1){
1883
errno = ioctl_errno;
1782
errno = ret_errno;
1884
1783
perror_plus("ioctl SIOCSIFFLAGS -IFF_UP");
1885
1784
errno = old_errno;
1886
return ioctl_errno;
1785
return ret_errno;
1887
1786
}
1888
1787
} else if(debug){
1889
1788
fprintf_plus(stderr, "Interface \"%s\" is already down; odd\n",
1897
1796
int main(int argc, char *argv[]){
1898
1797
mandos_context mc = { .server = NULL, .dh_bits = 1024,
1899
1798
.priority = "SECURE256:!CTYPE-X.509:"
1900
"+CTYPE-OPENPGP", .current_server = NULL,
1799
"+CTYPE-OPENPGP", .current_server = NULL,
1901
1800
.interfaces = NULL, .interfaces_size = 0 };
1902
1801
AvahiSServiceBrowser *sb = NULL;
1903
1802
error_t ret_errno;
1907
1806
int exitcode = EXIT_SUCCESS;
1908
1807
char *interfaces_to_take_down = NULL;
1909
1808
size_t interfaces_to_take_down_size = 0;
1910
char run_tempdir[] = "/run/tmp/mandosXXXXXX";
1911
char old_tempdir[] = "/tmp/mandosXXXXXX";
1912
char *tempdir = NULL;
1809
char tempdir[] = "/tmp/mandosXXXXXX";
1810
bool tempdir_created = false;
1913
1811
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
1914
1812
const char *seckey = PATHDIR "/" SECKEY;
1915
1813
const char *pubkey = PATHDIR "/" PUBKEY;
2097
1995
/* Work around Debian bug #633582:
2098
1996
<http://bugs.debian.org/633582> */
2099
1997
2100
/* Re-raise privileges */
2101
ret_errno = raise_privileges();
2102
if(ret_errno != 0){
2103
errno = ret_errno;
2104
perror_plus("Failed to raise privileges");
2105
} else {
1998
/* Re-raise priviliges */
1999
if(raise_privileges() == 0){
2106
2000
struct stat st;
2107
2001
2108
2002
if(strcmp(seckey, PATHDIR "/" SECKEY) == 0){
2148
2042
}
2149
2043
2150
2044
/* Lower privileges */
2151
ret_errno = lower_privileges();
2152
if(ret_errno != 0){
2153
errno = ret_errno;
2154
perror_plus("Failed to lower privileges");
2155
}
2045
lower_privileges();
2156
2046
}
2157
2047
}
2158
2048
2184
2074
memcpy(interfaces_hooks, mc.interfaces, mc.interfaces_size);
2185
2075
argz_stringify(interfaces_hooks, mc.interfaces_size, (int)',');
2186
2076
}
2187
run_network_hooks("start", interfaces_hooks != NULL ?
2188
interfaces_hooks : "", delay);
2077
if(not run_network_hooks("start", interfaces_hooks != NULL ?
2078
interfaces_hooks : "", delay)){
2079
goto end;
2080
}
2189
2081
}
2190
2082
2191
2083
if(not debug){
2269
2161
2270
2162
/* If no interfaces were specified, make a list */
2271
2163
if(mc.interfaces == NULL){
2272
struct dirent **direntries = NULL;
2164
struct dirent **direntries;
2273
2165
/* Look for any good interfaces */
2274
2166
ret = scandir(sys_class_net, &direntries, good_interface,
2275
2167
alphasort);
2281
2173
if(ret_errno != 0){
2282
2174
errno = ret_errno;
2283
2175
perror_plus("argz_add");
2284
free(direntries[i]);
2285
2176
continue;
2286
2177
}
2287
2178
if(debug){
2288
2179
fprintf_plus(stderr, "Will use interface \"%s\"\n",
2289
2180
direntries[i]->d_name);
2290
2181
}
2291
free(direntries[i]);
2292
2182
}
2293
2183
free(direntries);
2294
2184
} else {
2295
if(ret == 0){
2296
free(direntries);
2297
}
2185
free(direntries);
2298
2186
fprintf_plus(stderr, "Could not find a network interface\n");
2299
2187
exitcode = EXIT_FAILURE;
2300
2188
goto end;
2323
2211
break;
2324
2212
}
2325
2213
bool interface_was_up = interface_is_up(interface);
2326
errno = bring_up_interface(interface, delay);
2214
ret = bring_up_interface(interface, delay);
2327
2215
if(not interface_was_up){
2328
if(errno != 0){
2216
if(ret != 0){
2217
errno = ret;
2329
2218
perror_plus("Failed to bring up interface");
2330
2219
} else {
2331
errno = argz_add(&interfaces_to_take_down,
2332
&interfaces_to_take_down_size,
2333
interface);
2334
if(errno != 0){
2220
ret_errno = argz_add(&interfaces_to_take_down,
2221
&interfaces_to_take_down_size,
2222
interface);
2223
if(ret_errno != 0){
2224
errno = ret_errno;
2335
2225
perror_plus("argz_add");
2336
2226
}
2337
2227
}
2368
2258
goto end;
2369
2259
}
2370
2260
2371
/* Try /run/tmp before /tmp */
2372
tempdir = mkdtemp(run_tempdir);
2373
if(tempdir == NULL and errno == ENOENT){
2374
if(debug){
2375
fprintf_plus(stderr, "Tempdir %s did not work, trying %s\n",
2376
run_tempdir, old_tempdir);
2377
}
2378
tempdir = mkdtemp(old_tempdir);
2379
}
2380
if(tempdir == NULL){
2261
if(mkdtemp(tempdir) == NULL){
2381
2262
perror_plus("mkdtemp");
2382
2263
goto end;
2383
2264
}
2265
tempdir_created = true;
2384
2266
2385
2267
if(quit_now){
2386
2268
goto end;
2461
2343
sleep((unsigned int)retry_interval);
2462
2344
}
2463
2345
2464
if(not quit_now){
2346
if (not quit_now){
2465
2347
exitcode = EXIT_SUCCESS;
2466
2348
}
2467
2349
2522
2404
if(debug){
2523
2405
fprintf_plus(stderr, "Starting Avahi loop search\n");
2524
2406
}
2525
2407
2526
2408
ret = avahi_loop_with_timeout(simple_poll,
2527
2409
(int)(retry_interval * 1000), &mc);
2528
2410
if(debug){
2564
2446
mc.current_server->prev->next = NULL;
2565
2447
while(mc.current_server != NULL){
2566
2448
server *next = mc.current_server->next;
2567
#ifdef __GNUC__
2568
#pragma GCC diagnostic push
2569
#pragma GCC diagnostic ignored "-Wcast-qual"
2570
#endif
2571
free((char *)(mc.current_server->ip));
2572
#ifdef __GNUC__
2573
#pragma GCC diagnostic pop
2574
#endif
2575
2449
free(mc.current_server);
2576
2450
mc.current_server = next;
2577
2451
}
2578
2452
}
2579
2453
2580
/* Re-raise privileges */
2454
/* Re-raise priviliges */
2581
2455
{
2582
ret_errno = raise_privileges();
2583
if(ret_errno != 0){
2584
errno = ret_errno;
2585
perror_plus("Failed to raise privileges");
2586
} else {
2587
2588
/* Run network hooks */
2589
run_network_hooks("stop", interfaces_hooks != NULL ?
2590
interfaces_hooks : "", delay);
2591
2592
/* Take down the network interfaces which were brought up */
2593
{
2594
char *interface = NULL;
2595
while((interface=argz_next(interfaces_to_take_down,
2596
interfaces_to_take_down_size,
2597
interface))){
2598
ret_errno = take_down_interface(interface);
2599
if(ret_errno != 0){
2600
errno = ret_errno;
2601
perror_plus("Failed to take down interface");
2602
}
2603
}
2604
if(debug and (interfaces_to_take_down == NULL)){
2605
fprintf_plus(stderr, "No interfaces needed to be taken"
2606
" down\n");
2607
}
2608
}
2609
}
2610
2611
ret_errno = lower_privileges_permanently();
2612
if(ret_errno != 0){
2613
errno = ret_errno;
2614
perror_plus("Failed to lower privileges permanently");
2615
}
2456
raise_privileges();
2457
2458
/* Run network hooks */
2459
run_network_hooks("stop", interfaces_hooks != NULL ?
2460
interfaces_hooks : "", delay);
2461
2462
/* Take down the network interfaces which were brought up */
2463
{
2464
char *interface = NULL;
2465
while((interface=argz_next(interfaces_to_take_down,
2466
interfaces_to_take_down_size,
2467
interface))){
2468
ret_errno = take_down_interface(interface);
2469
if(ret_errno != 0){
2470
errno = ret_errno;
2471
perror_plus("Failed to take down interface");
2472
}
2473
}
2474
if(debug and (interfaces_to_take_down == NULL)){
2475
fprintf_plus(stderr, "No interfaces needed to be taken"
2476
" down\n");
2477
}
2478
}
2479
2480
lower_privileges_permanently();
2616
2481
}
2617
2482
2618
2483
free(interfaces_to_take_down);
2619
2484
free(interfaces_hooks);
2620
2485
2621
2486
/* Removes the GPGME temp directory and all files inside */
2622
if(tempdir != NULL){
2487
if(tempdir_created){
2623
2488
struct dirent **direntries = NULL;
2624
int tempdir_fd = (int)TEMP_FAILURE_RETRY(open(tempdir, O_RDONLY |
2625
O_NOFOLLOW));
2626
if(tempdir_fd == -1){
2627
perror_plus("open");
2628
} else {
2629
#ifdef __GLIBC__
2630
#if __GLIBC_PREREQ(2, 15)
2631
int numentries = scandirat(tempdir_fd, ".", &direntries,
2632
notdotentries, alphasort);
2633
#else /* not __GLIBC_PREREQ(2, 15) */
2634
int numentries = scandir(tempdir, &direntries, notdotentries,
2635
alphasort);
2636
#endif /* not __GLIBC_PREREQ(2, 15) */
2637
#else /* not __GLIBC__ */
2638
int numentries = scandir(tempdir, &direntries, notdotentries,
2639
alphasort);
2640
#endif /* not __GLIBC__ */
2641
if(numentries >= 0){
2642
for(int i = 0; i < numentries; i++){
2643
ret = unlinkat(tempdir_fd, direntries[i]->d_name, 0);
2644
if(ret == -1){
2645
fprintf_plus(stderr, "unlinkat(open(\"%s\", O_RDONLY),"
2646
" \"%s\", 0): %s\n", tempdir,
2647
direntries[i]->d_name, strerror(errno));
2648
}
2649
free(direntries[i]);
2650
}
2651
2652
/* need to clean even if 0 because man page doesn't specify */
2653
free(direntries);
2654
if(numentries == -1){
2655
perror_plus("scandir");
2656
}
2657
ret = rmdir(tempdir);
2658
if(ret == -1 and errno != ENOENT){
2659
perror_plus("rmdir");
2660
}
2489
struct dirent *direntry = NULL;
2490
int numentries = scandir(tempdir, &direntries, notdotentries,
2491
alphasort);
2492
if (numentries > 0){
2493
for(int i = 0; i < numentries; i++){
2494
direntry = direntries[i];
2495
char *fullname = NULL;
2496
ret = asprintf(&fullname, "%s/%s", tempdir,
2497
direntry->d_name);
2498
if(ret < 0){
2499
perror_plus("asprintf");
2500
continue;
2501
}
2502
ret = remove(fullname);
2503
if(ret == -1){
2504
fprintf_plus(stderr, "remove(\"%s\"): %s\n", fullname,
2505
strerror(errno));
2506
}
2507
free(fullname);
2661
2508
}
2662
TEMP_FAILURE_RETRY(close(tempdir_fd));
2509
}
2510
2511
/* need to clean even if 0 because man page doesn't specify */
2512
free(direntries);
2513
if (numentries == -1){
2514
perror_plus("scandir");
2515
}
2516
ret = rmdir(tempdir);
2517
if(ret == -1 and errno != ENOENT){
2518
perror_plus("rmdir");
2663
2519
}
2664
2520
}
2665
2521
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0