To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to plugins.d/mandos-client.c
- browse files at revision 647
- compare with another revision
- download diff
- download tarball
- view history from revision 647
- Committer: Teddy Hogeborn
- Date: 2013-12-31 16:02:18 UTC
- Revision ID: teddy@recompile.se-20131231160218-plmmb0o0iifkd5l2
Specify BusName in systemd service file.
* mandos.service (BusName): Uncommented.
* mandos.service (BusName): Uncommented.
- 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
free(new_server->ip);
244
free(new_server);
245
225
return false;
246
226
}
247
227
/* Special case of first server */
249
229
new_server->next = new_server;
250
230
new_server->prev = new_server;
251
231
*current_server = new_server;
232
/* Place the new server last in the list */
252
233
} else {
253
/* Place the new server last in the list */
254
234
new_server->next = *current_server;
255
235
new_server->prev = (*current_server)->prev;
256
236
new_server->prev->next = new_server;
257
237
(*current_server)->prev = new_server;
258
238
}
239
ret = clock_gettime(CLOCK_MONOTONIC, &(*current_server)->last_seen);
240
if(ret == -1){
241
perror_plus("clock_gettime");
242
return false;
243
}
259
244
return true;
260
245
}
261
246
262
247
/*
263
248
* Initialize GPGME.
264
249
*/
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){
250
static bool init_gpgme(const char *seckey, const char *pubkey,
251
const char *tempdir, mandos_context *mc){
270
252
gpgme_error_t rc;
271
253
gpgme_engine_info_t engine_info;
272
254
273
255
/*
274
256
* Helper function to insert pub and seckey to the engine keyring.
275
257
*/
276
bool import_key(const char * const filename){
258
bool import_key(const char *filename){
277
259
int ret;
278
260
int fd;
279
261
gpgme_data_t pgp_data;
360
342
* Decrypt OpenPGP data.
361
343
* Returns -1 on error
362
344
*/
363
__attribute__((nonnull, warn_unused_result))
364
345
static ssize_t pgp_packet_decrypt(const char *cryptotext,
365
346
size_t crypto_size,
366
347
char **plaintext,
486
467
return plaintext_length;
487
468
}
488
469
489
__attribute__((warn_unused_result))
490
static const char *safer_gnutls_strerror(int value){
470
static const char * safer_gnutls_strerror(int value){
491
471
const char *ret = gnutls_strerror(value);
492
472
if(ret == NULL)
493
473
ret = "(unknown)";
495
475
}
496
476
497
477
/* GnuTLS log function callback */
498
__attribute__((nonnull))
499
478
static void debuggnutls(__attribute__((unused)) int level,
500
479
const char* string){
501
480
fprintf_plus(stderr, "GnuTLS: %s", string);
502
481
}
503
482
504
__attribute__((nonnull, warn_unused_result))
505
483
static int init_gnutls_global(const char *pubkeyfilename,
506
484
const char *seckeyfilename,
507
485
mandos_context *mc){
581
559
return -1;
582
560
}
583
561
584
__attribute__((nonnull, warn_unused_result))
585
562
static int init_gnutls_session(gnutls_session_t *session,
586
563
mandos_context *mc){
587
564
int ret;
644
621
__attribute__((unused)) const char *txt){}
645
622
646
623
/* Called when a Mandos server is found */
647
__attribute__((nonnull, warn_unused_result))
648
624
static int start_mandos_communication(const char *ip, in_port_t port,
649
625
AvahiIfIndex if_index,
650
626
int af, mandos_context *mc){
651
627
int ret, tcp_sd = -1;
652
628
ssize_t sret;
653
struct sockaddr_storage to;
629
union {
630
struct sockaddr_in in;
631
struct sockaddr_in6 in6;
632
} to;
654
633
char *buffer = NULL;
655
634
char *decrypted_buffer = NULL;
656
635
size_t buffer_length = 0;
737
716
738
717
memset(&to, 0, sizeof(to));
739
718
if(af == AF_INET6){
740
((struct sockaddr_in6 *)&to)->sin6_family = (sa_family_t)af;
741
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);
742
721
} else { /* IPv4 */
743
((struct sockaddr_in *)&to)->sin_family = (sa_family_t)af;
744
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);
745
724
}
746
725
if(ret < 0 ){
747
726
int e = errno;
756
735
goto mandos_end;
757
736
}
758
737
if(af == AF_INET6){
759
((struct sockaddr_in6 *)&to)->sin6_port = htons(port);
760
if(IN6_IS_ADDR_LINKLOCAL
761
(&((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
762
748
if(if_index == AVAHI_IF_UNSPEC){
763
749
fprintf_plus(stderr, "An IPv6 link-local address is"
764
750
" incomplete without a network interface\n");
766
752
goto mandos_end;
767
753
}
768
754
/* Set the network interface number as scope */
769
((struct sockaddr_in6 *)&to)->sin6_scope_id = (uint32_t)if_index;
755
to.in6.sin6_scope_id = (uint32_t)if_index;
770
756
}
771
757
} else {
772
((struct sockaddr_in *)&to)->sin_port = htons(port);
758
to.in.sin_port = htons(port);
773
759
}
774
760
775
761
if(quit_now){
792
778
}
793
779
char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
794
780
INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
781
const char *pcret;
795
782
if(af == AF_INET6){
796
ret = getnameinfo((struct sockaddr *)&to,
797
sizeof(struct sockaddr_in6),
798
addrstr, sizeof(addrstr), NULL, 0,
799
NI_NUMERICHOST);
783
pcret = inet_ntop(af, &(to.in6.sin6_addr), addrstr,
784
sizeof(addrstr));
800
785
} else {
801
ret = getnameinfo((struct sockaddr *)&to,
802
sizeof(struct sockaddr_in),
803
addrstr, sizeof(addrstr), NULL, 0,
804
NI_NUMERICHOST);
786
pcret = inet_ntop(af, &(to.in.sin_addr), addrstr,
787
sizeof(addrstr));
805
788
}
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);
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
}
812
795
}
813
796
}
814
797
818
801
}
819
802
820
803
if(af == AF_INET6){
821
ret = connect(tcp_sd, (struct sockaddr *)&to,
822
sizeof(struct sockaddr_in6));
804
ret = connect(tcp_sd, &to.in6, sizeof(to));
823
805
} else {
824
ret = connect(tcp_sd, (struct sockaddr *)&to, /* IPv4 */
825
sizeof(struct sockaddr_in));
806
ret = connect(tcp_sd, &to.in, sizeof(to)); /* IPv4 */
826
807
}
827
808
if(ret < 0){
828
if((errno != ECONNREFUSED and errno != ENETUNREACH) or debug){
809
if ((errno != ECONNREFUSED and errno != ENETUNREACH) or debug){
829
810
int e = errno;
830
811
perror_plus("connect");
831
812
errno = e;
1046
1027
return retval;
1047
1028
}
1048
1029
1049
__attribute__((nonnull))
1050
1030
static void resolve_callback(AvahiSServiceResolver *r,
1051
1031
AvahiIfIndex interface,
1052
1032
AvahiProtocol proto,
1060
1040
AVAHI_GCC_UNUSED AvahiStringList *txt,
1061
1041
AVAHI_GCC_UNUSED AvahiLookupResultFlags
1062
1042
flags,
1063
void *mc){
1043
void* mc){
1064
1044
if(r == NULL){
1065
1045
return;
1066
1046
}
1119
1099
const char *domain,
1120
1100
AVAHI_GCC_UNUSED AvahiLookupResultFlags
1121
1101
flags,
1122
void *mc){
1102
void* mc){
1123
1103
if(b == NULL){
1124
1104
return;
1125
1105
}
1185
1165
errno = old_errno;
1186
1166
}
1187
1167
1188
__attribute__((nonnull, warn_unused_result))
1189
1168
bool get_flags(const char *ifname, struct ifreq *ifr){
1190
1169
int ret;
1191
1170
error_t ret_errno;
1210
1189
return true;
1211
1190
}
1212
1191
1213
__attribute__((nonnull, warn_unused_result))
1214
1192
bool good_flags(const char *ifname, const struct ifreq *ifr){
1215
1193
1216
1194
/* Reject the loopback device */
1258
1236
* corresponds to an acceptable network device.
1259
1237
* (This function is passed to scandir(3) as a filter function.)
1260
1238
*/
1261
__attribute__((nonnull, warn_unused_result))
1262
1239
int good_interface(const struct dirent *if_entry){
1263
1240
if(if_entry->d_name[0] == '.'){
1264
1241
return 0;
1282
1259
/*
1283
1260
* This function determines if a network interface is up.
1284
1261
*/
1285
__attribute__((nonnull, warn_unused_result))
1286
1262
bool interface_is_up(const char *interface){
1287
1263
struct ifreq ifr;
1288
1264
if(not get_flags(interface, &ifr)){
1299
1275
/*
1300
1276
* This function determines if a network interface is running
1301
1277
*/
1302
__attribute__((nonnull, warn_unused_result))
1303
1278
bool interface_is_running(const char *interface){
1304
1279
struct ifreq ifr;
1305
1280
if(not get_flags(interface, &ifr)){
1313
1288
return (bool)(ifr.ifr_flags & IFF_RUNNING);
1314
1289
}
1315
1290
1316
__attribute__((nonnull, pure, warn_unused_result))
1317
1291
int notdotentries(const struct dirent *direntry){
1318
1292
/* Skip "." and ".." */
1319
1293
if(direntry->d_name[0] == '.'
1326
1300
}
1327
1301
1328
1302
/* Is this directory entry a runnable program? */
1329
__attribute__((nonnull, warn_unused_result))
1330
1303
int runnable_hook(const struct dirent *direntry){
1331
1304
int ret;
1332
1305
size_t sret;
1340
1313
sret = strspn(direntry->d_name, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1341
1314
"abcdefghijklmnopqrstuvwxyz"
1342
1315
"0123456789"
1343
"_.-");
1316
"_-");
1344
1317
if((direntry->d_name)[sret] != '\0'){
1345
1318
/* Contains non-allowed characters */
1346
1319
if(debug){
1350
1323
return 0;
1351
1324
}
1352
1325
1353
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);
1354
1334
if(ret == -1){
1355
1335
if(debug){
1356
1336
perror_plus("Could not stat hook");
1380
1360
return 1;
1381
1361
}
1382
1362
1383
__attribute__((nonnull, warn_unused_result))
1384
1363
int avahi_loop_with_timeout(AvahiSimplePoll *s, int retry_interval,
1385
1364
mandos_context *mc){
1386
1365
int ret;
1390
1369
1391
1370
while(true){
1392
1371
if(mc->current_server == NULL){
1393
if(debug){
1372
if (debug){
1394
1373
fprintf_plus(stderr, "Wait until first server is found."
1395
1374
" No timeout!\n");
1396
1375
}
1397
1376
ret = avahi_simple_poll_iterate(s, -1);
1398
1377
} else {
1399
if(debug){
1378
if (debug){
1400
1379
fprintf_plus(stderr, "Check current_server if we should run"
1401
1380
" it, or wait\n");
1402
1381
}
1419
1398
- ((intmax_t)waited_time.tv_sec * 1000))
1420
1399
- ((intmax_t)waited_time.tv_nsec / 1000000));
1421
1400
1422
if(debug){
1401
if (debug){
1423
1402
fprintf_plus(stderr, "Blocking for %" PRIdMAX " ms\n",
1424
1403
block_time);
1425
1404
}
1447
1426
ret = avahi_simple_poll_iterate(s, (int)block_time);
1448
1427
}
1449
1428
if(ret != 0){
1450
if(ret > 0 or errno != EINTR){
1429
if (ret > 0 or errno != EINTR){
1451
1430
return (ret != 1) ? ret : 0;
1452
1431
}
1453
1432
}
1455
1434
}
1456
1435
1457
1436
/* Set effective uid to 0, return errno */
1458
__attribute__((warn_unused_result))
1459
1437
error_t raise_privileges(void){
1460
1438
error_t old_errno = errno;
1461
1439
error_t ret_errno = 0;
1462
1440
if(seteuid(0) == -1){
1463
1441
ret_errno = errno;
1442
perror_plus("seteuid");
1464
1443
}
1465
1444
errno = old_errno;
1466
1445
return ret_errno;
1467
1446
}
1468
1447
1469
1448
/* Set effective and real user ID to 0. Return errno. */
1470
__attribute__((warn_unused_result))
1471
1449
error_t raise_privileges_permanently(void){
1472
1450
error_t old_errno = errno;
1473
1451
error_t ret_errno = raise_privileges();
1477
1455
}
1478
1456
if(setuid(0) == -1){
1479
1457
ret_errno = errno;
1458
perror_plus("seteuid");
1480
1459
}
1481
1460
errno = old_errno;
1482
1461
return ret_errno;
1483
1462
}
1484
1463
1485
1464
/* Set effective user ID to unprivileged saved user ID */
1486
__attribute__((warn_unused_result))
1487
1465
error_t lower_privileges(void){
1488
1466
error_t old_errno = errno;
1489
1467
error_t ret_errno = 0;
1490
1468
if(seteuid(uid) == -1){
1491
1469
ret_errno = errno;
1470
perror_plus("seteuid");
1492
1471
}
1493
1472
errno = old_errno;
1494
1473
return ret_errno;
1495
1474
}
1496
1475
1497
1476
/* Lower privileges permanently */
1498
__attribute__((warn_unused_result))
1499
1477
error_t lower_privileges_permanently(void){
1500
1478
error_t old_errno = errno;
1501
1479
error_t ret_errno = 0;
1502
1480
if(setuid(uid) == -1){
1503
1481
ret_errno = errno;
1482
perror_plus("setuid");
1504
1483
}
1505
1484
errno = old_errno;
1506
1485
return ret_errno;
1507
1486
}
1508
1487
1509
__attribute__((nonnull))
1510
void run_network_hooks(const char *mode, const char *interface,
1488
bool run_network_hooks(const char *mode, const char *interface,
1511
1489
const float delay){
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__ */
1490
struct dirent **direntries;
1491
struct dirent *direntry;
1492
int ret;
1493
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1494
alphasort);
1539
1495
if(numhooks == -1){
1540
perror_plus("scandir");
1541
return;
1542
}
1543
struct dirent *direntry;
1544
int ret;
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);
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");
1551
1503
}
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){
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){
1613
1511
perror_plus("asprintf");
1614
_exit(EX_OSERR);
1615
}
1616
ret = setenv("DELAY", delaystring, 1);
1617
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
}
1618
1570
free(delaystring);
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;
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
}
1662
1582
} else {
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);
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;
1680
1619
}
1681
1620
1682
__attribute__((nonnull, warn_unused_result))
1683
1621
error_t bring_up_interface(const char *const interface,
1684
1622
const float delay){
1623
int sd = -1;
1685
1624
error_t old_errno = errno;
1686
int ret;
1625
error_t ret_errno = 0;
1626
int ret, ret_setflags;
1687
1627
struct ifreq network;
1688
1628
unsigned int if_index = if_nametoindex(interface);
1689
1629
if(if_index == 0){
1698
1638
}
1699
1639
1700
1640
if(not interface_is_up(interface)){
1701
error_t ret_errno = 0, ioctl_errno = 0;
1702
if(not get_flags(interface, &network)){
1641
if(not get_flags(interface, &network) and debug){
1703
1642
ret_errno = errno;
1704
1643
fprintf_plus(stderr, "Failed to get flags for interface "
1705
1644
"\"%s\"\n", interface);
1706
errno = old_errno;
1707
1645
return ret_errno;
1708
1646
}
1709
network.ifr_flags |= IFF_UP; /* set flag */
1647
network.ifr_flags |= IFF_UP;
1710
1648
1711
int sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1712
if(sd == -1){
1649
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1650
if(sd < 0){
1713
1651
ret_errno = errno;
1714
1652
perror_plus("socket");
1715
1653
errno = old_errno;
1716
1654
return ret_errno;
1717
1655
}
1718
1656
1719
1657
if(quit_now){
1720
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1721
if(ret == -1){
1722
perror_plus("close");
1723
}
1658
close(sd);
1724
1659
errno = old_errno;
1725
1660
return EINTR;
1726
1661
}
1730
1665
interface);
1731
1666
}
1732
1667
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
}
1668
/* Raise priviliges */
1669
raise_privileges();
1739
1670
1740
1671
#ifdef __linux__
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
}
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");
1752
1679
}
1753
1680
#endif /* __linux__ */
1754
int ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
1755
ioctl_errno = errno;
1681
ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
1682
ret_errno = errno;
1756
1683
#ifdef __linux__
1757
1684
if(restore_loglevel){
1758
1685
ret_linux = klogctl(7, NULL, 0);
1762
1689
}
1763
1690
#endif /* __linux__ */
1764
1691
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
}
1692
/* Lower privileges */
1693
lower_privileges();
1774
1694
1775
1695
/* Close the socket */
1776
1696
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1779
1699
}
1780
1700
1781
1701
if(ret_setflags == -1){
1782
errno = ioctl_errno;
1702
errno = ret_errno;
1783
1703
perror_plus("ioctl SIOCSIFFLAGS +IFF_UP");
1784
1704
errno = old_errno;
1785
return ioctl_errno;
1705
return ret_errno;
1786
1706
}
1787
1707
} else if(debug){
1788
1708
fprintf_plus(stderr, "Interface \"%s\" is already up; good\n",
1806
1726
return 0;
1807
1727
}
1808
1728
1809
__attribute__((nonnull, warn_unused_result))
1810
1729
error_t take_down_interface(const char *const interface){
1730
int sd = -1;
1811
1731
error_t old_errno = errno;
1732
error_t ret_errno = 0;
1733
int ret, ret_setflags;
1812
1734
struct ifreq network;
1813
1735
unsigned int if_index = if_nametoindex(interface);
1814
1736
if(if_index == 0){
1817
1739
return ENXIO;
1818
1740
}
1819
1741
if(interface_is_up(interface)){
1820
error_t ret_errno = 0, ioctl_errno = 0;
1821
1742
if(not get_flags(interface, &network) and debug){
1822
1743
ret_errno = errno;
1823
1744
fprintf_plus(stderr, "Failed to get flags for interface "
1824
1745
"\"%s\"\n", interface);
1825
errno = old_errno;
1826
1746
return ret_errno;
1827
1747
}
1828
1748
network.ifr_flags &= ~(short)IFF_UP; /* clear flag */
1829
1749
1830
int sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1831
if(sd == -1){
1750
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1751
if(sd < 0){
1832
1752
ret_errno = errno;
1833
1753
perror_plus("socket");
1834
1754
errno = old_errno;
1840
1760
interface);
1841
1761
}
1842
1762
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
}
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();
1862
1771
1863
1772
/* Close the socket */
1864
int ret = (int)TEMP_FAILURE_RETRY(close(sd));
1773
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1865
1774
if(ret == -1){
1866
1775
perror_plus("close");
1867
1776
}
1868
1777
1869
1778
if(ret_setflags == -1){
1870
errno = ioctl_errno;
1779
errno = ret_errno;
1871
1780
perror_plus("ioctl SIOCSIFFLAGS -IFF_UP");
1872
1781
errno = old_errno;
1873
return ioctl_errno;
1782
return ret_errno;
1874
1783
}
1875
1784
} else if(debug){
1876
1785
fprintf_plus(stderr, "Interface \"%s\" is already down; odd\n",
1884
1793
int main(int argc, char *argv[]){
1885
1794
mandos_context mc = { .server = NULL, .dh_bits = 1024,
1886
1795
.priority = "SECURE256:!CTYPE-X.509:"
1887
"+CTYPE-OPENPGP", .current_server = NULL,
1796
"+CTYPE-OPENPGP", .current_server = NULL,
1888
1797
.interfaces = NULL, .interfaces_size = 0 };
1889
1798
AvahiSServiceBrowser *sb = NULL;
1890
1799
error_t ret_errno;
1894
1803
int exitcode = EXIT_SUCCESS;
1895
1804
char *interfaces_to_take_down = NULL;
1896
1805
size_t interfaces_to_take_down_size = 0;
1897
char run_tempdir[] = "/run/tmp/mandosXXXXXX";
1898
char old_tempdir[] = "/tmp/mandosXXXXXX";
1899
char *tempdir = NULL;
1806
char tempdir[] = "/tmp/mandosXXXXXX";
1807
bool tempdir_created = false;
1900
1808
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
1901
1809
const char *seckey = PATHDIR "/" SECKEY;
1902
1810
const char *pubkey = PATHDIR "/" PUBKEY;
1903
1811
char *interfaces_hooks = NULL;
1812
size_t interfaces_hooks_size = 0;
1904
1813
1905
1814
bool gnutls_initialized = false;
1906
1815
bool gpgme_initialized = false;
2084
1993
/* Work around Debian bug #633582:
2085
1994
<http://bugs.debian.org/633582> */
2086
1995
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 {
1996
/* Re-raise priviliges */
1997
if(raise_privileges() == 0){
2093
1998
struct stat st;
2094
1999
2095
2000
if(strcmp(seckey, PATHDIR "/" SECKEY) == 0){
2135
2040
}
2136
2041
2137
2042
/* Lower privileges */
2138
ret_errno = lower_privileges();
2139
if(ret_errno != 0){
2140
errno = ret_errno;
2141
perror_plus("Failed to lower privileges");
2142
}
2043
lower_privileges();
2143
2044
}
2144
2045
}
2145
2046
2169
2070
goto end;
2170
2071
}
2171
2072
memcpy(interfaces_hooks, mc.interfaces, mc.interfaces_size);
2172
argz_stringify(interfaces_hooks, mc.interfaces_size, (int)',');
2173
}
2174
run_network_hooks("start", interfaces_hooks != NULL ?
2175
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
}
2176
2081
}
2177
2082
2178
2083
if(not debug){
2256
2161
2257
2162
/* If no interfaces were specified, make a list */
2258
2163
if(mc.interfaces == NULL){
2259
struct dirent **direntries = NULL;
2164
struct dirent **direntries;
2260
2165
/* Look for any good interfaces */
2261
2166
ret = scandir(sys_class_net, &direntries, good_interface,
2262
2167
alphasort);
2266
2171
ret_errno = argz_add(&mc.interfaces, &mc.interfaces_size,
2267
2172
direntries[i]->d_name);
2268
2173
if(ret_errno != 0){
2269
errno = ret_errno;
2270
2174
perror_plus("argz_add");
2271
2175
continue;
2272
2176
}
2277
2181
}
2278
2182
free(direntries);
2279
2183
} else {
2280
if(ret == 0){
2281
free(direntries);
2282
}
2184
free(direntries);
2283
2185
fprintf_plus(stderr, "Could not find a network interface\n");
2284
2186
exitcode = EXIT_FAILURE;
2285
2187
goto end;
2308
2210
break;
2309
2211
}
2310
2212
bool interface_was_up = interface_is_up(interface);
2311
errno = bring_up_interface(interface, delay);
2213
ret = bring_up_interface(interface, delay);
2312
2214
if(not interface_was_up){
2313
if(errno != 0){
2215
if(ret != 0){
2216
errno = ret;
2314
2217
perror_plus("Failed to bring up interface");
2315
2218
} else {
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
}
2219
ret_errno = argz_add(&interfaces_to_take_down,
2220
&interfaces_to_take_down_size,
2221
interface);
2322
2222
}
2323
2223
}
2324
2224
}
2353
2253
goto end;
2354
2254
}
2355
2255
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){
2256
if(mkdtemp(tempdir) == NULL){
2366
2257
perror_plus("mkdtemp");
2367
2258
goto end;
2368
2259
}
2260
tempdir_created = true;
2369
2261
2370
2262
if(quit_now){
2371
2263
goto end;
2446
2338
sleep((unsigned int)retry_interval);
2447
2339
}
2448
2340
2449
if(not quit_now){
2341
if (not quit_now){
2450
2342
exitcode = EXIT_SUCCESS;
2451
2343
}
2452
2344
2507
2399
if(debug){
2508
2400
fprintf_plus(stderr, "Starting Avahi loop search\n");
2509
2401
}
2510
2402
2511
2403
ret = avahi_loop_with_timeout(simple_poll,
2512
2404
(int)(retry_interval * 1000), &mc);
2513
2405
if(debug){
2554
2446
}
2555
2447
}
2556
2448
2557
/* Re-raise privileges */
2449
/* Re-raise priviliges */
2558
2450
{
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
}
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();
2593
2476
}
2594
2477
2595
2478
free(interfaces_to_take_down);
2596
2479
free(interfaces_hooks);
2597
2480
2598
2481
/* Removes the GPGME temp directory and all files inside */
2599
if(tempdir != NULL){
2482
if(tempdir_created){
2600
2483
struct dirent **direntries = NULL;
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
}
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);
2637
2503
}
2638
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");
2639
2514
}
2640
2515
}
2641
2516
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0