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- Committer: Teddy Hogeborn
- Date: 2014-01-06 16:01:46 UTC
- Revision ID: teddy@recompile.se-20140106160146-v5gnpwf0vidfz7h7
Minor code fix; raise only exception instances, not classes.
* mandos (DBusObjectWithProperties.Set): Add error message if raising
ValueError (should never
happen anyway).
* mandos (DBusObjectWithProperties.Set): Add error message if raising
ValueError (should never
happen anyway).
- 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){
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;
201
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
202
if(buffer == NULL){
213
203
return 0;
214
204
}
215
*buffer = new_buf;
216
205
buffer_capacity += BUFFER_SIZE;
217
206
}
218
207
return buffer_capacity;
219
208
}
220
209
221
210
/* Add server to set of servers to retry periodically */
222
__attribute__((nonnull, warn_unused_result))
223
211
bool add_server(const char *ip, in_port_t port, AvahiIfIndex if_index,
224
212
int af, server **current_server){
225
213
int ret;
234
222
.af = af };
235
223
if(new_server->ip == NULL){
236
224
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
225
return false;
253
226
}
254
227
/* Special case of first server */
256
229
new_server->next = new_server;
257
230
new_server->prev = new_server;
258
231
*current_server = new_server;
232
/* Place the new server last in the list */
259
233
} else {
260
/* Place the new server last in the list */
261
234
new_server->next = *current_server;
262
235
new_server->prev = (*current_server)->prev;
263
236
new_server->prev->next = new_server;
264
237
(*current_server)->prev = new_server;
265
238
}
239
ret = clock_gettime(CLOCK_MONOTONIC, &(*current_server)->last_seen);
240
if(ret == -1){
241
perror_plus("clock_gettime");
242
return false;
243
}
266
244
return true;
267
245
}
268
246
269
247
/*
270
248
* Initialize GPGME.
271
249
*/
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){
250
static bool init_gpgme(const char *seckey, const char *pubkey,
251
const char *tempdir, mandos_context *mc){
277
252
gpgme_error_t rc;
278
253
gpgme_engine_info_t engine_info;
279
254
280
255
/*
281
256
* Helper function to insert pub and seckey to the engine keyring.
282
257
*/
283
bool import_key(const char * const filename){
258
bool import_key(const char *filename){
284
259
int ret;
285
260
int fd;
286
261
gpgme_data_t pgp_data;
367
342
* Decrypt OpenPGP data.
368
343
* Returns -1 on error
369
344
*/
370
__attribute__((nonnull, warn_unused_result))
371
345
static ssize_t pgp_packet_decrypt(const char *cryptotext,
372
346
size_t crypto_size,
373
347
char **plaintext,
493
467
return plaintext_length;
494
468
}
495
469
496
__attribute__((warn_unused_result))
497
static const char *safer_gnutls_strerror(int value){
470
static const char * safer_gnutls_strerror(int value){
498
471
const char *ret = gnutls_strerror(value);
499
472
if(ret == NULL)
500
473
ret = "(unknown)";
502
475
}
503
476
504
477
/* GnuTLS log function callback */
505
__attribute__((nonnull))
506
478
static void debuggnutls(__attribute__((unused)) int level,
507
479
const char* string){
508
480
fprintf_plus(stderr, "GnuTLS: %s", string);
509
481
}
510
482
511
__attribute__((nonnull, warn_unused_result))
512
483
static int init_gnutls_global(const char *pubkeyfilename,
513
484
const char *seckeyfilename,
514
485
mandos_context *mc){
588
559
return -1;
589
560
}
590
561
591
__attribute__((nonnull, warn_unused_result))
592
562
static int init_gnutls_session(gnutls_session_t *session,
593
563
mandos_context *mc){
594
564
int ret;
651
621
__attribute__((unused)) const char *txt){}
652
622
653
623
/* Called when a Mandos server is found */
654
__attribute__((nonnull, warn_unused_result))
655
624
static int start_mandos_communication(const char *ip, in_port_t port,
656
625
AvahiIfIndex if_index,
657
626
int af, mandos_context *mc){
658
627
int ret, tcp_sd = -1;
659
628
ssize_t sret;
660
struct sockaddr_storage to;
629
union {
630
struct sockaddr_in in;
631
struct sockaddr_in6 in6;
632
} to;
661
633
char *buffer = NULL;
662
634
char *decrypted_buffer = NULL;
663
635
size_t buffer_length = 0;
744
716
745
717
memset(&to, 0, sizeof(to));
746
718
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);
719
to.in6.sin6_family = (sa_family_t)af;
720
ret = inet_pton(af, ip, &to.in6.sin6_addr);
749
721
} 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);
722
to.in.sin_family = (sa_family_t)af;
723
ret = inet_pton(af, ip, &to.in.sin_addr);
752
724
}
753
725
if(ret < 0 ){
754
726
int e = errno;
763
735
goto mandos_end;
764
736
}
765
737
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)){
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
769
748
if(if_index == AVAHI_IF_UNSPEC){
770
749
fprintf_plus(stderr, "An IPv6 link-local address is"
771
750
" incomplete without a network interface\n");
773
752
goto mandos_end;
774
753
}
775
754
/* Set the network interface number as scope */
776
((struct sockaddr_in6 *)&to)->sin6_scope_id = (uint32_t)if_index;
755
to.in6.sin6_scope_id = (uint32_t)if_index;
777
756
}
778
757
} else {
779
((struct sockaddr_in *)&to)->sin_port = htons(port);
758
to.in.sin_port = htons(port);
780
759
}
781
760
782
761
if(quit_now){
799
778
}
800
779
char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
801
780
INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
781
const char *pcret;
802
782
if(af == AF_INET6){
803
ret = getnameinfo((struct sockaddr *)&to,
804
sizeof(struct sockaddr_in6),
805
addrstr, sizeof(addrstr), NULL, 0,
806
NI_NUMERICHOST);
783
pcret = inet_ntop(af, &(to.in6.sin6_addr), addrstr,
784
sizeof(addrstr));
807
785
} else {
808
ret = getnameinfo((struct sockaddr *)&to,
809
sizeof(struct sockaddr_in),
810
addrstr, sizeof(addrstr), NULL, 0,
811
NI_NUMERICHOST);
786
pcret = inet_ntop(af, &(to.in.sin_addr), addrstr,
787
sizeof(addrstr));
812
788
}
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);
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
}
819
795
}
820
796
}
821
797
825
801
}
826
802
827
803
if(af == AF_INET6){
828
ret = connect(tcp_sd, (struct sockaddr *)&to,
829
sizeof(struct sockaddr_in6));
804
ret = connect(tcp_sd, &to.in6, sizeof(to));
830
805
} else {
831
ret = connect(tcp_sd, (struct sockaddr *)&to, /* IPv4 */
832
sizeof(struct sockaddr_in));
806
ret = connect(tcp_sd, &to.in, sizeof(to)); /* IPv4 */
833
807
}
834
808
if(ret < 0){
835
if((errno != ECONNREFUSED and errno != ENETUNREACH) or debug){
809
if ((errno != ECONNREFUSED and errno != ENETUNREACH) or debug){
836
810
int e = errno;
837
811
perror_plus("connect");
838
812
errno = e;
1053
1027
return retval;
1054
1028
}
1055
1029
1056
__attribute__((nonnull))
1057
1030
static void resolve_callback(AvahiSServiceResolver *r,
1058
1031
AvahiIfIndex interface,
1059
1032
AvahiProtocol proto,
1067
1040
AVAHI_GCC_UNUSED AvahiStringList *txt,
1068
1041
AVAHI_GCC_UNUSED AvahiLookupResultFlags
1069
1042
flags,
1070
void *mc){
1043
void* mc){
1071
1044
if(r == NULL){
1072
1045
return;
1073
1046
}
1076
1049
timed out */
1077
1050
1078
1051
if(quit_now){
1079
avahi_s_service_resolver_free(r);
1080
1052
return;
1081
1053
}
1082
1054
1127
1099
const char *domain,
1128
1100
AVAHI_GCC_UNUSED AvahiLookupResultFlags
1129
1101
flags,
1130
void *mc){
1102
void* mc){
1131
1103
if(b == NULL){
1132
1104
return;
1133
1105
}
1193
1165
errno = old_errno;
1194
1166
}
1195
1167
1196
__attribute__((nonnull, warn_unused_result))
1197
1168
bool get_flags(const char *ifname, struct ifreq *ifr){
1198
1169
int ret;
1199
1170
error_t ret_errno;
1218
1189
return true;
1219
1190
}
1220
1191
1221
__attribute__((nonnull, warn_unused_result))
1222
1192
bool good_flags(const char *ifname, const struct ifreq *ifr){
1223
1193
1224
1194
/* Reject the loopback device */
1266
1236
* corresponds to an acceptable network device.
1267
1237
* (This function is passed to scandir(3) as a filter function.)
1268
1238
*/
1269
__attribute__((nonnull, warn_unused_result))
1270
1239
int good_interface(const struct dirent *if_entry){
1271
1240
if(if_entry->d_name[0] == '.'){
1272
1241
return 0;
1290
1259
/*
1291
1260
* This function determines if a network interface is up.
1292
1261
*/
1293
__attribute__((nonnull, warn_unused_result))
1294
1262
bool interface_is_up(const char *interface){
1295
1263
struct ifreq ifr;
1296
1264
if(not get_flags(interface, &ifr)){
1307
1275
/*
1308
1276
* This function determines if a network interface is running
1309
1277
*/
1310
__attribute__((nonnull, warn_unused_result))
1311
1278
bool interface_is_running(const char *interface){
1312
1279
struct ifreq ifr;
1313
1280
if(not get_flags(interface, &ifr)){
1321
1288
return (bool)(ifr.ifr_flags & IFF_RUNNING);
1322
1289
}
1323
1290
1324
__attribute__((nonnull, pure, warn_unused_result))
1325
1291
int notdotentries(const struct dirent *direntry){
1326
1292
/* Skip "." and ".." */
1327
1293
if(direntry->d_name[0] == '.'
1334
1300
}
1335
1301
1336
1302
/* Is this directory entry a runnable program? */
1337
__attribute__((nonnull, warn_unused_result))
1338
1303
int runnable_hook(const struct dirent *direntry){
1339
1304
int ret;
1340
1305
size_t sret;
1348
1313
sret = strspn(direntry->d_name, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1349
1314
"abcdefghijklmnopqrstuvwxyz"
1350
1315
"0123456789"
1351
"_.-");
1316
"_-");
1352
1317
if((direntry->d_name)[sret] != '\0'){
1353
1318
/* Contains non-allowed characters */
1354
1319
if(debug){
1358
1323
return 0;
1359
1324
}
1360
1325
1361
ret = fstatat(hookdir_fd, direntry->d_name, &st, 0);
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);
1362
1334
if(ret == -1){
1363
1335
if(debug){
1364
1336
perror_plus("Could not stat hook");
1388
1360
return 1;
1389
1361
}
1390
1362
1391
__attribute__((nonnull, warn_unused_result))
1392
1363
int avahi_loop_with_timeout(AvahiSimplePoll *s, int retry_interval,
1393
1364
mandos_context *mc){
1394
1365
int ret;
1398
1369
1399
1370
while(true){
1400
1371
if(mc->current_server == NULL){
1401
if(debug){
1372
if (debug){
1402
1373
fprintf_plus(stderr, "Wait until first server is found."
1403
1374
" No timeout!\n");
1404
1375
}
1405
1376
ret = avahi_simple_poll_iterate(s, -1);
1406
1377
} else {
1407
if(debug){
1378
if (debug){
1408
1379
fprintf_plus(stderr, "Check current_server if we should run"
1409
1380
" it, or wait\n");
1410
1381
}
1427
1398
- ((intmax_t)waited_time.tv_sec * 1000))
1428
1399
- ((intmax_t)waited_time.tv_nsec / 1000000));
1429
1400
1430
if(debug){
1401
if (debug){
1431
1402
fprintf_plus(stderr, "Blocking for %" PRIdMAX " ms\n",
1432
1403
block_time);
1433
1404
}
1455
1426
ret = avahi_simple_poll_iterate(s, (int)block_time);
1456
1427
}
1457
1428
if(ret != 0){
1458
if(ret > 0 or errno != EINTR){
1429
if (ret > 0 or errno != EINTR){
1459
1430
return (ret != 1) ? ret : 0;
1460
1431
}
1461
1432
}
1463
1434
}
1464
1435
1465
1436
/* Set effective uid to 0, return errno */
1466
__attribute__((warn_unused_result))
1467
1437
error_t raise_privileges(void){
1468
1438
error_t old_errno = errno;
1469
1439
error_t ret_errno = 0;
1470
1440
if(seteuid(0) == -1){
1471
1441
ret_errno = errno;
1442
perror_plus("seteuid");
1472
1443
}
1473
1444
errno = old_errno;
1474
1445
return ret_errno;
1475
1446
}
1476
1447
1477
1448
/* Set effective and real user ID to 0. Return errno. */
1478
__attribute__((warn_unused_result))
1479
1449
error_t raise_privileges_permanently(void){
1480
1450
error_t old_errno = errno;
1481
1451
error_t ret_errno = raise_privileges();
1485
1455
}
1486
1456
if(setuid(0) == -1){
1487
1457
ret_errno = errno;
1458
perror_plus("seteuid");
1488
1459
}
1489
1460
errno = old_errno;
1490
1461
return ret_errno;
1491
1462
}
1492
1463
1493
1464
/* Set effective user ID to unprivileged saved user ID */
1494
__attribute__((warn_unused_result))
1495
1465
error_t lower_privileges(void){
1496
1466
error_t old_errno = errno;
1497
1467
error_t ret_errno = 0;
1498
1468
if(seteuid(uid) == -1){
1499
1469
ret_errno = errno;
1470
perror_plus("seteuid");
1500
1471
}
1501
1472
errno = old_errno;
1502
1473
return ret_errno;
1503
1474
}
1504
1475
1505
1476
/* Lower privileges permanently */
1506
__attribute__((warn_unused_result))
1507
1477
error_t lower_privileges_permanently(void){
1508
1478
error_t old_errno = errno;
1509
1479
error_t ret_errno = 0;
1510
1480
if(setuid(uid) == -1){
1511
1481
ret_errno = errno;
1482
perror_plus("setuid");
1512
1483
}
1513
1484
errno = old_errno;
1514
1485
return ret_errno;
1515
1486
}
1516
1487
1517
__attribute__((nonnull))
1518
void run_network_hooks(const char *mode, const char *interface,
1488
bool run_network_hooks(const char *mode, const char *interface,
1519
1489
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__ */
1490
struct dirent **direntries;
1491
struct dirent *direntry;
1492
int ret;
1493
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1494
alphasort);
1547
1495
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);
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");
1559
1503
}
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){
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){
1621
1511
perror_plus("asprintf");
1622
_exit(EX_OSERR);
1623
}
1624
ret = setenv("DELAY", delaystring, 1);
1625
if(ret == -1){
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
}
1626
1570
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;
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
}
1673
1582
} 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);
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;
1693
1619
}
1694
1620
1695
__attribute__((nonnull, warn_unused_result))
1696
1621
error_t bring_up_interface(const char *const interface,
1697
1622
const float delay){
1623
int sd = -1;
1698
1624
error_t old_errno = errno;
1699
int ret;
1625
error_t ret_errno = 0;
1626
int ret, ret_setflags;
1700
1627
struct ifreq network;
1701
1628
unsigned int if_index = if_nametoindex(interface);
1702
1629
if(if_index == 0){
1711
1638
}
1712
1639
1713
1640
if(not interface_is_up(interface)){
1714
error_t ret_errno = 0, ioctl_errno = 0;
1715
if(not get_flags(interface, &network)){
1641
if(not get_flags(interface, &network) and debug){
1716
1642
ret_errno = errno;
1717
1643
fprintf_plus(stderr, "Failed to get flags for interface "
1718
1644
"\"%s\"\n", interface);
1719
errno = old_errno;
1720
1645
return ret_errno;
1721
1646
}
1722
network.ifr_flags |= IFF_UP; /* set flag */
1647
network.ifr_flags |= IFF_UP;
1723
1648
1724
int sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1725
if(sd == -1){
1649
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1650
if(sd < 0){
1726
1651
ret_errno = errno;
1727
1652
perror_plus("socket");
1728
1653
errno = old_errno;
1729
1654
return ret_errno;
1730
1655
}
1731
1656
1732
1657
if(quit_now){
1733
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1734
if(ret == -1){
1735
perror_plus("close");
1736
}
1658
close(sd);
1737
1659
errno = old_errno;
1738
1660
return EINTR;
1739
1661
}
1743
1665
interface);
1744
1666
}
1745
1667
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
}
1668
/* Raise priviliges */
1669
raise_privileges();
1752
1670
1753
1671
#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
}
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");
1765
1679
}
1766
1680
#endif /* __linux__ */
1767
int ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
1768
ioctl_errno = errno;
1681
ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
1682
ret_errno = errno;
1769
1683
#ifdef __linux__
1770
1684
if(restore_loglevel){
1771
1685
ret_linux = klogctl(7, NULL, 0);
1775
1689
}
1776
1690
#endif /* __linux__ */
1777
1691
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
}
1692
/* Lower privileges */
1693
lower_privileges();
1787
1694
1788
1695
/* Close the socket */
1789
1696
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1792
1699
}
1793
1700
1794
1701
if(ret_setflags == -1){
1795
errno = ioctl_errno;
1702
errno = ret_errno;
1796
1703
perror_plus("ioctl SIOCSIFFLAGS +IFF_UP");
1797
1704
errno = old_errno;
1798
return ioctl_errno;
1705
return ret_errno;
1799
1706
}
1800
1707
} else if(debug){
1801
1708
fprintf_plus(stderr, "Interface \"%s\" is already up; good\n",
1819
1726
return 0;
1820
1727
}
1821
1728
1822
__attribute__((nonnull, warn_unused_result))
1823
1729
error_t take_down_interface(const char *const interface){
1730
int sd = -1;
1824
1731
error_t old_errno = errno;
1732
error_t ret_errno = 0;
1733
int ret, ret_setflags;
1825
1734
struct ifreq network;
1826
1735
unsigned int if_index = if_nametoindex(interface);
1827
1736
if(if_index == 0){
1830
1739
return ENXIO;
1831
1740
}
1832
1741
if(interface_is_up(interface)){
1833
error_t ret_errno = 0, ioctl_errno = 0;
1834
1742
if(not get_flags(interface, &network) and debug){
1835
1743
ret_errno = errno;
1836
1744
fprintf_plus(stderr, "Failed to get flags for interface "
1837
1745
"\"%s\"\n", interface);
1838
errno = old_errno;
1839
1746
return ret_errno;
1840
1747
}
1841
1748
network.ifr_flags &= ~(short)IFF_UP; /* clear flag */
1842
1749
1843
int sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1844
if(sd == -1){
1750
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1751
if(sd < 0){
1845
1752
ret_errno = errno;
1846
1753
perror_plus("socket");
1847
1754
errno = old_errno;
1853
1760
interface);
1854
1761
}
1855
1762
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
}
1862
1863
int ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
1864
ioctl_errno = errno;
1865
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
}
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();
1875
1771
1876
1772
/* Close the socket */
1877
int ret = (int)TEMP_FAILURE_RETRY(close(sd));
1773
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1878
1774
if(ret == -1){
1879
1775
perror_plus("close");
1880
1776
}
1881
1777
1882
1778
if(ret_setflags == -1){
1883
errno = ioctl_errno;
1779
errno = ret_errno;
1884
1780
perror_plus("ioctl SIOCSIFFLAGS -IFF_UP");
1885
1781
errno = old_errno;
1886
return ioctl_errno;
1782
return ret_errno;
1887
1783
}
1888
1784
} else if(debug){
1889
1785
fprintf_plus(stderr, "Interface \"%s\" is already down; odd\n",
1897
1793
int main(int argc, char *argv[]){
1898
1794
mandos_context mc = { .server = NULL, .dh_bits = 1024,
1899
1795
.priority = "SECURE256:!CTYPE-X.509:"
1900
"+CTYPE-OPENPGP", .current_server = NULL,
1796
"+CTYPE-OPENPGP", .current_server = NULL,
1901
1797
.interfaces = NULL, .interfaces_size = 0 };
1902
1798
AvahiSServiceBrowser *sb = NULL;
1903
1799
error_t ret_errno;
1907
1803
int exitcode = EXIT_SUCCESS;
1908
1804
char *interfaces_to_take_down = NULL;
1909
1805
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;
1806
char tempdir[] = "/tmp/mandosXXXXXX";
1807
bool tempdir_created = false;
1913
1808
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
1914
1809
const char *seckey = PATHDIR "/" SECKEY;
1915
1810
const char *pubkey = PATHDIR "/" PUBKEY;
1916
1811
char *interfaces_hooks = NULL;
1812
size_t interfaces_hooks_size = 0;
1917
1813
1918
1814
bool gnutls_initialized = false;
1919
1815
bool gpgme_initialized = false;
2097
1993
/* Work around Debian bug #633582:
2098
1994
<http://bugs.debian.org/633582> */
2099
1995
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 {
1996
/* Re-raise priviliges */
1997
if(raise_privileges() == 0){
2106
1998
struct stat st;
2107
1999
2108
2000
if(strcmp(seckey, PATHDIR "/" SECKEY) == 0){
2148
2040
}
2149
2041
2150
2042
/* Lower privileges */
2151
ret_errno = lower_privileges();
2152
if(ret_errno != 0){
2153
errno = ret_errno;
2154
perror_plus("Failed to lower privileges");
2155
}
2043
lower_privileges();
2156
2044
}
2157
2045
}
2158
2046
2182
2070
goto end;
2183
2071
}
2184
2072
memcpy(interfaces_hooks, mc.interfaces, mc.interfaces_size);
2185
argz_stringify(interfaces_hooks, mc.interfaces_size, (int)',');
2186
}
2187
run_network_hooks("start", interfaces_hooks != NULL ?
2188
interfaces_hooks : "", delay);
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
}
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);
2279
2171
ret_errno = argz_add(&mc.interfaces, &mc.interfaces_size,
2280
2172
direntries[i]->d_name);
2281
2173
if(ret_errno != 0){
2282
errno = ret_errno;
2283
2174
perror_plus("argz_add");
2284
free(direntries[i]);
2285
2175
continue;
2286
2176
}
2287
2177
if(debug){
2288
2178
fprintf_plus(stderr, "Will use interface \"%s\"\n",
2289
2179
direntries[i]->d_name);
2290
2180
}
2291
free(direntries[i]);
2292
2181
}
2293
2182
free(direntries);
2294
2183
} else {
2295
if(ret == 0){
2296
free(direntries);
2297
}
2184
free(direntries);
2298
2185
fprintf_plus(stderr, "Could not find a network interface\n");
2299
2186
exitcode = EXIT_FAILURE;
2300
2187
goto end;
2323
2210
break;
2324
2211
}
2325
2212
bool interface_was_up = interface_is_up(interface);
2326
errno = bring_up_interface(interface, delay);
2213
ret = bring_up_interface(interface, delay);
2327
2214
if(not interface_was_up){
2328
if(errno != 0){
2215
if(ret != 0){
2216
errno = ret;
2329
2217
perror_plus("Failed to bring up interface");
2330
2218
} else {
2331
errno = argz_add(&interfaces_to_take_down,
2332
&interfaces_to_take_down_size,
2333
interface);
2334
if(errno != 0){
2335
perror_plus("argz_add");
2336
}
2219
ret_errno = argz_add(&interfaces_to_take_down,
2220
&interfaces_to_take_down_size,
2221
interface);
2337
2222
}
2338
2223
}
2339
2224
}
2368
2253
goto end;
2369
2254
}
2370
2255
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){
2256
if(mkdtemp(tempdir) == NULL){
2381
2257
perror_plus("mkdtemp");
2382
2258
goto end;
2383
2259
}
2260
tempdir_created = true;
2384
2261
2385
2262
if(quit_now){
2386
2263
goto end;
2461
2338
sleep((unsigned int)retry_interval);
2462
2339
}
2463
2340
2464
if(not quit_now){
2341
if (not quit_now){
2465
2342
exitcode = EXIT_SUCCESS;
2466
2343
}
2467
2344
2522
2399
if(debug){
2523
2400
fprintf_plus(stderr, "Starting Avahi loop search\n");
2524
2401
}
2525
2402
2526
2403
ret = avahi_loop_with_timeout(simple_poll,
2527
2404
(int)(retry_interval * 1000), &mc);
2528
2405
if(debug){
2564
2441
mc.current_server->prev->next = NULL;
2565
2442
while(mc.current_server != NULL){
2566
2443
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
2444
free(mc.current_server);
2576
2445
mc.current_server = next;
2577
2446
}
2578
2447
}
2579
2448
2580
/* Re-raise privileges */
2449
/* Re-raise priviliges */
2581
2450
{
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
}
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();
2616
2476
}
2617
2477
2618
2478
free(interfaces_to_take_down);
2619
2479
free(interfaces_hooks);
2620
2480
2621
2481
/* Removes the GPGME temp directory and all files inside */
2622
if(tempdir != NULL){
2482
if(tempdir_created){
2623
2483
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
}
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);
2661
2503
}
2662
TEMP_FAILURE_RETRY(close(tempdir_fd));
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");
2663
2514
}
2664
2515
}
2665
2516
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0