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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:
- Makefile
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;
236
229
perror_plus("strdup");
237
230
return false;
238
231
}
239
ret = clock_gettime(CLOCK_MONOTONIC, &(new_server->last_seen));
240
if(ret == -1){
241
perror_plus("clock_gettime");
242
return false;
243
}
244
232
/* Special case of first server */
245
233
if(*current_server == NULL){
246
234
new_server->next = new_server;
247
235
new_server->prev = new_server;
248
236
*current_server = new_server;
237
/* Place the new server last in the list */
249
238
} else {
250
/* Place the new server last in the list */
251
239
new_server->next = *current_server;
252
240
new_server->prev = (*current_server)->prev;
253
241
new_server->prev->next = new_server;
254
242
(*current_server)->prev = new_server;
255
243
}
244
ret = clock_gettime(CLOCK_MONOTONIC, &(*current_server)->last_seen);
245
if(ret == -1){
246
perror_plus("clock_gettime");
247
return false;
248
}
256
249
return true;
257
250
}
258
251
259
252
/*
260
253
* Initialize GPGME.
261
254
*/
262
__attribute__((nonnull, warn_unused_result))
263
static bool init_gpgme(const char * const seckey,
264
const char * const pubkey,
265
const char * const tempdir,
266
mandos_context *mc){
255
static bool init_gpgme(const char *seckey, const char *pubkey,
256
const char *tempdir, mandos_context *mc){
267
257
gpgme_error_t rc;
268
258
gpgme_engine_info_t engine_info;
269
259
270
260
/*
271
261
* Helper function to insert pub and seckey to the engine keyring.
272
262
*/
273
bool import_key(const char * const filename){
263
bool import_key(const char *filename){
274
264
int ret;
275
265
int fd;
276
266
gpgme_data_t pgp_data;
357
347
* Decrypt OpenPGP data.
358
348
* Returns -1 on error
359
349
*/
360
__attribute__((nonnull, warn_unused_result))
361
350
static ssize_t pgp_packet_decrypt(const char *cryptotext,
362
351
size_t crypto_size,
363
352
char **plaintext,
483
472
return plaintext_length;
484
473
}
485
474
486
__attribute__((warn_unused_result))
487
static const char *safer_gnutls_strerror(int value){
475
static const char * safer_gnutls_strerror(int value){
488
476
const char *ret = gnutls_strerror(value);
489
477
if(ret == NULL)
490
478
ret = "(unknown)";
492
480
}
493
481
494
482
/* GnuTLS log function callback */
495
__attribute__((nonnull))
496
483
static void debuggnutls(__attribute__((unused)) int level,
497
484
const char* string){
498
485
fprintf_plus(stderr, "GnuTLS: %s", string);
499
486
}
500
487
501
__attribute__((nonnull, warn_unused_result))
502
488
static int init_gnutls_global(const char *pubkeyfilename,
503
489
const char *seckeyfilename,
504
490
mandos_context *mc){
578
564
return -1;
579
565
}
580
566
581
__attribute__((nonnull, warn_unused_result))
582
567
static int init_gnutls_session(gnutls_session_t *session,
583
568
mandos_context *mc){
584
569
int ret;
641
626
__attribute__((unused)) const char *txt){}
642
627
643
628
/* Called when a Mandos server is found */
644
__attribute__((nonnull, warn_unused_result))
645
629
static int start_mandos_communication(const char *ip, in_port_t port,
646
630
AvahiIfIndex if_index,
647
631
int af, mandos_context *mc){
648
632
int ret, tcp_sd = -1;
649
633
ssize_t sret;
650
struct sockaddr_storage to;
634
union {
635
struct sockaddr_in in;
636
struct sockaddr_in6 in6;
637
} to;
651
638
char *buffer = NULL;
652
639
char *decrypted_buffer = NULL;
653
640
size_t buffer_length = 0;
734
721
735
722
memset(&to, 0, sizeof(to));
736
723
if(af == AF_INET6){
737
((struct sockaddr_in6 *)&to)->sin6_family = (sa_family_t)af;
738
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);
739
726
} else { /* IPv4 */
740
((struct sockaddr_in *)&to)->sin_family = (sa_family_t)af;
741
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);
742
729
}
743
730
if(ret < 0 ){
744
731
int e = errno;
753
740
goto mandos_end;
754
741
}
755
742
if(af == AF_INET6){
756
((struct sockaddr_in6 *)&to)->sin6_port = htons(port);
757
if(IN6_IS_ADDR_LINKLOCAL
758
(&((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
759
753
if(if_index == AVAHI_IF_UNSPEC){
760
754
fprintf_plus(stderr, "An IPv6 link-local address is"
761
755
" incomplete without a network interface\n");
763
757
goto mandos_end;
764
758
}
765
759
/* Set the network interface number as scope */
766
((struct sockaddr_in6 *)&to)->sin6_scope_id = (uint32_t)if_index;
760
to.in6.sin6_scope_id = (uint32_t)if_index;
767
761
}
768
762
} else {
769
((struct sockaddr_in *)&to)->sin_port = htons(port);
763
to.in.sin_port = htons(port);
770
764
}
771
765
772
766
if(quit_now){
789
783
}
790
784
char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
791
785
INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
786
const char *pcret;
792
787
if(af == AF_INET6){
793
ret = getnameinfo((struct sockaddr *)&to,
794
sizeof(struct sockaddr_in6),
795
addrstr, sizeof(addrstr), NULL, 0,
796
NI_NUMERICHOST);
788
pcret = inet_ntop(af, &(to.in6.sin6_addr), addrstr,
789
sizeof(addrstr));
797
790
} else {
798
ret = getnameinfo((struct sockaddr *)&to,
799
sizeof(struct sockaddr_in),
800
addrstr, sizeof(addrstr), NULL, 0,
801
NI_NUMERICHOST);
791
pcret = inet_ntop(af, &(to.in.sin_addr), addrstr,
792
sizeof(addrstr));
802
793
}
803
if(ret == EAI_SYSTEM){
804
perror_plus("getnameinfo");
805
} else if(ret != 0) {
806
fprintf_plus(stderr, "getnameinfo: %s", gai_strerror(ret));
807
} else if(strcmp(addrstr, ip) != 0){
808
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
}
809
800
}
810
801
}
811
802
815
806
}
816
807
817
808
if(af == AF_INET6){
818
ret = connect(tcp_sd, (struct sockaddr *)&to,
819
sizeof(struct sockaddr_in6));
809
ret = connect(tcp_sd, &to.in6, sizeof(to));
820
810
} else {
821
ret = connect(tcp_sd, (struct sockaddr *)&to, /* IPv4 */
822
sizeof(struct sockaddr_in));
811
ret = connect(tcp_sd, &to.in, sizeof(to)); /* IPv4 */
823
812
}
824
813
if(ret < 0){
825
if((errno != ECONNREFUSED and errno != ENETUNREACH) or debug){
814
if ((errno != ECONNREFUSED and errno != ENETUNREACH) or debug){
826
815
int e = errno;
827
816
perror_plus("connect");
828
817
errno = e;
1043
1032
return retval;
1044
1033
}
1045
1034
1046
__attribute__((nonnull))
1047
1035
static void resolve_callback(AvahiSServiceResolver *r,
1048
1036
AvahiIfIndex interface,
1049
1037
AvahiProtocol proto,
1057
1045
AVAHI_GCC_UNUSED AvahiStringList *txt,
1058
1046
AVAHI_GCC_UNUSED AvahiLookupResultFlags
1059
1047
flags,
1060
void *mc){
1048
void* mc){
1061
1049
if(r == NULL){
1062
1050
return;
1063
1051
}
1116
1104
const char *domain,
1117
1105
AVAHI_GCC_UNUSED AvahiLookupResultFlags
1118
1106
flags,
1119
void *mc){
1107
void* mc){
1120
1108
if(b == NULL){
1121
1109
return;
1122
1110
}
1182
1170
errno = old_errno;
1183
1171
}
1184
1172
1185
__attribute__((nonnull, warn_unused_result))
1186
1173
bool get_flags(const char *ifname, struct ifreq *ifr){
1187
1174
int ret;
1188
1175
error_t ret_errno;
1207
1194
return true;
1208
1195
}
1209
1196
1210
__attribute__((nonnull, warn_unused_result))
1211
1197
bool good_flags(const char *ifname, const struct ifreq *ifr){
1212
1198
1213
1199
/* Reject the loopback device */
1255
1241
* corresponds to an acceptable network device.
1256
1242
* (This function is passed to scandir(3) as a filter function.)
1257
1243
*/
1258
__attribute__((nonnull, warn_unused_result))
1259
1244
int good_interface(const struct dirent *if_entry){
1260
1245
if(if_entry->d_name[0] == '.'){
1261
1246
return 0;
1279
1264
/*
1280
1265
* This function determines if a network interface is up.
1281
1266
*/
1282
__attribute__((nonnull, warn_unused_result))
1283
1267
bool interface_is_up(const char *interface){
1284
1268
struct ifreq ifr;
1285
1269
if(not get_flags(interface, &ifr)){
1296
1280
/*
1297
1281
* This function determines if a network interface is running
1298
1282
*/
1299
__attribute__((nonnull, warn_unused_result))
1300
1283
bool interface_is_running(const char *interface){
1301
1284
struct ifreq ifr;
1302
1285
if(not get_flags(interface, &ifr)){
1310
1293
return (bool)(ifr.ifr_flags & IFF_RUNNING);
1311
1294
}
1312
1295
1313
__attribute__((nonnull, pure, warn_unused_result))
1314
1296
int notdotentries(const struct dirent *direntry){
1315
1297
/* Skip "." and ".." */
1316
1298
if(direntry->d_name[0] == '.'
1323
1305
}
1324
1306
1325
1307
/* Is this directory entry a runnable program? */
1326
__attribute__((nonnull, warn_unused_result))
1327
1308
int runnable_hook(const struct dirent *direntry){
1328
1309
int ret;
1329
1310
size_t sret;
1337
1318
sret = strspn(direntry->d_name, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1338
1319
"abcdefghijklmnopqrstuvwxyz"
1339
1320
"0123456789"
1340
"_.-");
1321
"_-");
1341
1322
if((direntry->d_name)[sret] != '\0'){
1342
1323
/* Contains non-allowed characters */
1343
1324
if(debug){
1347
1328
return 0;
1348
1329
}
1349
1330
1350
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);
1351
1339
if(ret == -1){
1352
1340
if(debug){
1353
1341
perror_plus("Could not stat hook");
1377
1365
return 1;
1378
1366
}
1379
1367
1380
__attribute__((nonnull, warn_unused_result))
1381
1368
int avahi_loop_with_timeout(AvahiSimplePoll *s, int retry_interval,
1382
1369
mandos_context *mc){
1383
1370
int ret;
1387
1374
1388
1375
while(true){
1389
1376
if(mc->current_server == NULL){
1390
if(debug){
1377
if (debug){
1391
1378
fprintf_plus(stderr, "Wait until first server is found."
1392
1379
" No timeout!\n");
1393
1380
}
1394
1381
ret = avahi_simple_poll_iterate(s, -1);
1395
1382
} else {
1396
if(debug){
1383
if (debug){
1397
1384
fprintf_plus(stderr, "Check current_server if we should run"
1398
1385
" it, or wait\n");
1399
1386
}
1416
1403
- ((intmax_t)waited_time.tv_sec * 1000))
1417
1404
- ((intmax_t)waited_time.tv_nsec / 1000000));
1418
1405
1419
if(debug){
1406
if (debug){
1420
1407
fprintf_plus(stderr, "Blocking for %" PRIdMAX " ms\n",
1421
1408
block_time);
1422
1409
}
1444
1431
ret = avahi_simple_poll_iterate(s, (int)block_time);
1445
1432
}
1446
1433
if(ret != 0){
1447
if(ret > 0 or errno != EINTR){
1434
if (ret > 0 or errno != EINTR){
1448
1435
return (ret != 1) ? ret : 0;
1449
1436
}
1450
1437
}
1452
1439
}
1453
1440
1454
1441
/* Set effective uid to 0, return errno */
1455
__attribute__((warn_unused_result))
1456
1442
error_t raise_privileges(void){
1457
1443
error_t old_errno = errno;
1458
1444
error_t ret_errno = 0;
1459
1445
if(seteuid(0) == -1){
1460
1446
ret_errno = errno;
1447
perror_plus("seteuid");
1461
1448
}
1462
1449
errno = old_errno;
1463
1450
return ret_errno;
1464
1451
}
1465
1452
1466
1453
/* Set effective and real user ID to 0. Return errno. */
1467
__attribute__((warn_unused_result))
1468
1454
error_t raise_privileges_permanently(void){
1469
1455
error_t old_errno = errno;
1470
1456
error_t ret_errno = raise_privileges();
1474
1460
}
1475
1461
if(setuid(0) == -1){
1476
1462
ret_errno = errno;
1463
perror_plus("seteuid");
1477
1464
}
1478
1465
errno = old_errno;
1479
1466
return ret_errno;
1480
1467
}
1481
1468
1482
1469
/* Set effective user ID to unprivileged saved user ID */
1483
__attribute__((warn_unused_result))
1484
1470
error_t lower_privileges(void){
1485
1471
error_t old_errno = errno;
1486
1472
error_t ret_errno = 0;
1487
1473
if(seteuid(uid) == -1){
1488
1474
ret_errno = errno;
1475
perror_plus("seteuid");
1489
1476
}
1490
1477
errno = old_errno;
1491
1478
return ret_errno;
1492
1479
}
1493
1480
1494
1481
/* Lower privileges permanently */
1495
__attribute__((warn_unused_result))
1496
1482
error_t lower_privileges_permanently(void){
1497
1483
error_t old_errno = errno;
1498
1484
error_t ret_errno = 0;
1499
1485
if(setuid(uid) == -1){
1500
1486
ret_errno = errno;
1487
perror_plus("setuid");
1501
1488
}
1502
1489
errno = old_errno;
1503
1490
return ret_errno;
1504
1491
}
1505
1492
1506
__attribute__((nonnull))
1507
void run_network_hooks(const char *mode, const char *interface,
1493
bool run_network_hooks(const char *mode, const char *interface,
1508
1494
const float delay){
1509
struct dirent **direntries = NULL;
1510
if(hookdir_fd == -1){
1511
hookdir_fd = open(hookdir, O_RDONLY);
1512
if(hookdir_fd == -1){
1513
if(errno == ENOENT){
1514
if(debug){
1515
fprintf_plus(stderr, "Network hook directory \"%s\" not"
1516
" found\n", hookdir);
1517
}
1518
} else {
1519
perror_plus("open");
1520
}
1521
return;
1522
}
1523
}
1524
#ifdef __GLIBC__
1525
#if __GLIBC_PREREQ(2, 15)
1526
int numhooks = scandirat(hookdir_fd, ".", &direntries,
1527
runnable_hook, alphasort);
1528
#else /* not __GLIBC_PREREQ(2, 15) */
1529
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1530
alphasort);
1531
#endif /* not __GLIBC_PREREQ(2, 15) */
1532
#else /* not __GLIBC__ */
1533
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1534
alphasort);
1535
#endif /* not __GLIBC__ */
1495
struct dirent **direntries;
1496
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1497
alphasort);
1536
1498
if(numhooks == -1){
1537
perror_plus("scandir");
1538
return;
1539
}
1540
struct dirent *direntry;
1541
int ret;
1542
int devnull = open("/dev/null", O_RDONLY);
1543
for(int i = 0; i < numhooks; i++){
1544
direntry = direntries[i];
1545
if(debug){
1546
fprintf_plus(stderr, "Running network hook \"%s\"\n",
1547
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");
1548
1506
}
1549
pid_t hook_pid = fork();
1550
if(hook_pid == 0){
1551
/* Child */
1552
/* Raise privileges */
1553
errno = raise_privileges_permanently();
1554
if(errno != 0){
1555
perror_plus("Failed to raise privileges");
1556
_exit(EX_NOPERM);
1557
}
1558
/* Set group */
1559
errno = 0;
1560
ret = setgid(0);
1561
if(ret == -1){
1562
perror_plus("setgid");
1563
_exit(EX_NOPERM);
1564
}
1565
/* Reset supplementary groups */
1566
errno = 0;
1567
ret = setgroups(0, NULL);
1568
if(ret == -1){
1569
perror_plus("setgroups");
1570
_exit(EX_NOPERM);
1571
}
1572
ret = dup2(devnull, STDIN_FILENO);
1573
if(ret == -1){
1574
perror_plus("dup2(devnull, STDIN_FILENO)");
1575
_exit(EX_OSERR);
1576
}
1577
ret = close(devnull);
1578
if(ret == -1){
1579
perror_plus("close");
1580
_exit(EX_OSERR);
1581
}
1582
ret = dup2(STDERR_FILENO, STDOUT_FILENO);
1583
if(ret == -1){
1584
perror_plus("dup2(STDERR_FILENO, STDOUT_FILENO)");
1585
_exit(EX_OSERR);
1586
}
1587
ret = setenv("MANDOSNETHOOKDIR", hookdir, 1);
1588
if(ret == -1){
1589
perror_plus("setenv");
1590
_exit(EX_OSERR);
1591
}
1592
ret = setenv("DEVICE", interface, 1);
1593
if(ret == -1){
1594
perror_plus("setenv");
1595
_exit(EX_OSERR);
1596
}
1597
ret = setenv("VERBOSITY", debug ? "1" : "0", 1);
1598
if(ret == -1){
1599
perror_plus("setenv");
1600
_exit(EX_OSERR);
1601
}
1602
ret = setenv("MODE", mode, 1);
1603
if(ret == -1){
1604
perror_plus("setenv");
1605
_exit(EX_OSERR);
1606
}
1607
char *delaystring;
1608
ret = asprintf(&delaystring, "%f", (double)delay);
1609
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){
1610
1516
perror_plus("asprintf");
1611
_exit(EX_OSERR);
1612
}
1613
ret = setenv("DELAY", delaystring, 1);
1614
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
}
1615
1575
free(delaystring);
1616
perror_plus("setenv");
1617
_exit(EX_OSERR);
1618
}
1619
free(delaystring);
1620
if(connect_to != NULL){
1621
ret = setenv("CONNECT", connect_to, 1);
1622
if(ret == -1){
1623
perror_plus("setenv");
1624
_exit(EX_OSERR);
1625
}
1626
}
1627
int hook_fd = openat(hookdir_fd, direntry->d_name, O_RDONLY);
1628
if(hook_fd == -1){
1629
perror_plus("openat");
1630
_exit(EXIT_FAILURE);
1631
}
1632
if((int)TEMP_FAILURE_RETRY(close(hookdir_fd)) == -1){
1633
perror_plus("close");
1634
_exit(EXIT_FAILURE);
1635
}
1636
if(fexecve(hook_fd, (char *const []){ direntry->d_name, NULL },
1637
environ) == -1){
1638
perror_plus("fexecve");
1639
_exit(EXIT_FAILURE);
1640
}
1641
} else {
1642
int status;
1643
if(TEMP_FAILURE_RETRY(waitpid(hook_pid, &status, 0)) == -1){
1644
perror_plus("waitpid");
1645
continue;
1646
}
1647
if(WIFEXITED(status)){
1648
if(WEXITSTATUS(status) != 0){
1649
fprintf_plus(stderr, "Warning: network hook \"%s\" exited"
1650
" with status %d\n", direntry->d_name,
1651
WEXITSTATUS(status));
1652
continue;
1653
}
1654
} else if(WIFSIGNALED(status)){
1655
fprintf_plus(stderr, "Warning: network hook \"%s\" died by"
1656
" signal %d\n", direntry->d_name,
1657
WTERMSIG(status));
1658
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
}
1659
1587
} else {
1660
fprintf_plus(stderr, "Warning: network hook \"%s\""
1661
" crashed\n", direntry->d_name);
1662
continue;
1663
}
1664
}
1665
if(debug){
1666
fprintf_plus(stderr, "Network hook \"%s\" ran successfully\n",
1667
direntry->d_name);
1668
}
1669
}
1670
free(direntries);
1671
if((int)TEMP_FAILURE_RETRY(close(hookdir_fd)) == -1){
1672
perror_plus("close");
1673
} else {
1674
hookdir_fd = -1;
1675
}
1676
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;
1677
1624
}
1678
1625
1679
__attribute__((nonnull, warn_unused_result))
1680
1626
error_t bring_up_interface(const char *const interface,
1681
1627
const float delay){
1628
int sd = -1;
1682
1629
error_t old_errno = errno;
1683
int ret;
1630
error_t ret_errno = 0;
1631
int ret, ret_setflags;
1684
1632
struct ifreq network;
1685
1633
unsigned int if_index = if_nametoindex(interface);
1686
1634
if(if_index == 0){
1695
1643
}
1696
1644
1697
1645
if(not interface_is_up(interface)){
1698
error_t ret_errno = 0, ioctl_errno = 0;
1699
if(not get_flags(interface, &network)){
1646
if(not get_flags(interface, &network) and debug){
1700
1647
ret_errno = errno;
1701
1648
fprintf_plus(stderr, "Failed to get flags for interface "
1702
1649
"\"%s\"\n", interface);
1703
errno = old_errno;
1704
1650
return ret_errno;
1705
1651
}
1706
network.ifr_flags |= IFF_UP; /* set flag */
1652
network.ifr_flags |= IFF_UP;
1707
1653
1708
int sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1709
if(sd == -1){
1654
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1655
if(sd < 0){
1710
1656
ret_errno = errno;
1711
1657
perror_plus("socket");
1712
1658
errno = old_errno;
1713
1659
return ret_errno;
1714
1660
}
1715
1661
1716
1662
if(quit_now){
1717
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1718
if(ret == -1){
1719
perror_plus("close");
1720
}
1663
close(sd);
1721
1664
errno = old_errno;
1722
1665
return EINTR;
1723
1666
}
1727
1670
interface);
1728
1671
}
1729
1672
1730
/* Raise privileges */
1731
ret_errno = raise_privileges();
1732
if(ret_errno != 0){
1733
errno = ret_errno;
1734
perror_plus("Failed to raise privileges");
1735
}
1673
/* Raise priviliges */
1674
raise_privileges();
1736
1675
1737
1676
#ifdef __linux__
1738
int ret_linux;
1739
bool restore_loglevel = false;
1740
if(ret_errno == 0){
1741
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1742
messages about the network interface to mess up the prompt */
1743
ret_linux = klogctl(8, NULL, 5);
1744
if(ret_linux == -1){
1745
perror_plus("klogctl");
1746
} else {
1747
restore_loglevel = true;
1748
}
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");
1749
1684
}
1750
1685
#endif /* __linux__ */
1751
int ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
1752
ioctl_errno = errno;
1686
ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
1687
ret_errno = errno;
1753
1688
#ifdef __linux__
1754
1689
if(restore_loglevel){
1755
1690
ret_linux = klogctl(7, NULL, 0);
1759
1694
}
1760
1695
#endif /* __linux__ */
1761
1696
1762
/* If raise_privileges() succeeded above */
1763
if(ret_errno == 0){
1764
/* Lower privileges */
1765
ret_errno = lower_privileges();
1766
if(ret_errno != 0){
1767
errno = ret_errno;
1768
perror_plus("Failed to lower privileges");
1769
}
1770
}
1697
/* Lower privileges */
1698
lower_privileges();
1771
1699
1772
1700
/* Close the socket */
1773
1701
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1776
1704
}
1777
1705
1778
1706
if(ret_setflags == -1){
1779
errno = ioctl_errno;
1707
errno = ret_errno;
1780
1708
perror_plus("ioctl SIOCSIFFLAGS +IFF_UP");
1781
1709
errno = old_errno;
1782
return ioctl_errno;
1710
return ret_errno;
1783
1711
}
1784
1712
} else if(debug){
1785
1713
fprintf_plus(stderr, "Interface \"%s\" is already up; good\n",
1803
1731
return 0;
1804
1732
}
1805
1733
1806
__attribute__((nonnull, warn_unused_result))
1807
1734
error_t take_down_interface(const char *const interface){
1808
1735
error_t old_errno = errno;
1809
1736
struct ifreq network;
1814
1741
return ENXIO;
1815
1742
}
1816
1743
if(interface_is_up(interface)){
1817
error_t ret_errno = 0, ioctl_errno = 0;
1744
error_t ret_errno = 0;
1818
1745
if(not get_flags(interface, &network) and debug){
1819
1746
ret_errno = errno;
1820
1747
fprintf_plus(stderr, "Failed to get flags for interface "
1821
1748
"\"%s\"\n", interface);
1822
errno = old_errno;
1823
1749
return ret_errno;
1824
1750
}
1825
1751
network.ifr_flags &= ~(short)IFF_UP; /* clear flag */
1826
1752
1827
1753
int sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1828
if(sd == -1){
1754
if(sd < 0){
1829
1755
ret_errno = errno;
1830
1756
perror_plus("socket");
1831
1757
errno = old_errno;
1837
1763
interface);
1838
1764
}
1839
1765
1840
/* Raise privileges */
1841
ret_errno = raise_privileges();
1842
if(ret_errno != 0){
1843
errno = ret_errno;
1844
perror_plus("Failed to raise privileges");
1845
}
1766
/* Raise priviliges */
1767
raise_privileges();
1846
1768
1847
1769
int ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
1848
ioctl_errno = errno;
1770
ret_errno = errno;
1849
1771
1850
/* If raise_privileges() succeeded above */
1851
if(ret_errno == 0){
1852
/* Lower privileges */
1853
ret_errno = lower_privileges();
1854
if(ret_errno != 0){
1855
errno = ret_errno;
1856
perror_plus("Failed to lower privileges");
1857
}
1858
}
1772
/* Lower privileges */
1773
lower_privileges();
1859
1774
1860
1775
/* Close the socket */
1861
1776
int ret = (int)TEMP_FAILURE_RETRY(close(sd));
1864
1779
}
1865
1780
1866
1781
if(ret_setflags == -1){
1867
errno = ioctl_errno;
1782
errno = ret_errno;
1868
1783
perror_plus("ioctl SIOCSIFFLAGS -IFF_UP");
1869
1784
errno = old_errno;
1870
return ioctl_errno;
1785
return ret_errno;
1871
1786
}
1872
1787
} else if(debug){
1873
1788
fprintf_plus(stderr, "Interface \"%s\" is already down; odd\n",
1881
1796
int main(int argc, char *argv[]){
1882
1797
mandos_context mc = { .server = NULL, .dh_bits = 1024,
1883
1798
.priority = "SECURE256:!CTYPE-X.509:"
1884
"+CTYPE-OPENPGP", .current_server = NULL,
1799
"+CTYPE-OPENPGP", .current_server = NULL,
1885
1800
.interfaces = NULL, .interfaces_size = 0 };
1886
1801
AvahiSServiceBrowser *sb = NULL;
1887
1802
error_t ret_errno;
1891
1806
int exitcode = EXIT_SUCCESS;
1892
1807
char *interfaces_to_take_down = NULL;
1893
1808
size_t interfaces_to_take_down_size = 0;
1894
char run_tempdir[] = "/run/tmp/mandosXXXXXX";
1895
char old_tempdir[] = "/tmp/mandosXXXXXX";
1896
char *tempdir = NULL;
1809
char tempdir[] = "/tmp/mandosXXXXXX";
1810
bool tempdir_created = false;
1897
1811
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
1898
1812
const char *seckey = PATHDIR "/" SECKEY;
1899
1813
const char *pubkey = PATHDIR "/" PUBKEY;
2081
1995
/* Work around Debian bug #633582:
2082
1996
<http://bugs.debian.org/633582> */
2083
1997
2084
/* Re-raise privileges */
2085
ret_errno = raise_privileges();
2086
if(ret_errno != 0){
2087
errno = ret_errno;
2088
perror_plus("Failed to raise privileges");
2089
} else {
1998
/* Re-raise priviliges */
1999
if(raise_privileges() == 0){
2090
2000
struct stat st;
2091
2001
2092
2002
if(strcmp(seckey, PATHDIR "/" SECKEY) == 0){
2132
2042
}
2133
2043
2134
2044
/* Lower privileges */
2135
ret_errno = lower_privileges();
2136
if(ret_errno != 0){
2137
errno = ret_errno;
2138
perror_plus("Failed to lower privileges");
2139
}
2045
lower_privileges();
2140
2046
}
2141
2047
}
2142
2048
2168
2074
memcpy(interfaces_hooks, mc.interfaces, mc.interfaces_size);
2169
2075
argz_stringify(interfaces_hooks, mc.interfaces_size, (int)',');
2170
2076
}
2171
run_network_hooks("start", interfaces_hooks != NULL ?
2172
interfaces_hooks : "", delay);
2077
if(not run_network_hooks("start", interfaces_hooks != NULL ?
2078
interfaces_hooks : "", delay)){
2079
goto end;
2080
}
2173
2081
}
2174
2082
2175
2083
if(not debug){
2253
2161
2254
2162
/* If no interfaces were specified, make a list */
2255
2163
if(mc.interfaces == NULL){
2256
struct dirent **direntries = NULL;
2164
struct dirent **direntries;
2257
2165
/* Look for any good interfaces */
2258
2166
ret = scandir(sys_class_net, &direntries, good_interface,
2259
2167
alphasort);
2274
2182
}
2275
2183
free(direntries);
2276
2184
} else {
2277
if(ret == 0){
2278
free(direntries);
2279
}
2185
free(direntries);
2280
2186
fprintf_plus(stderr, "Could not find a network interface\n");
2281
2187
exitcode = EXIT_FAILURE;
2282
2188
goto end;
2305
2211
break;
2306
2212
}
2307
2213
bool interface_was_up = interface_is_up(interface);
2308
errno = bring_up_interface(interface, delay);
2214
ret = bring_up_interface(interface, delay);
2309
2215
if(not interface_was_up){
2310
if(errno != 0){
2216
if(ret != 0){
2217
errno = ret;
2311
2218
perror_plus("Failed to bring up interface");
2312
2219
} else {
2313
errno = argz_add(&interfaces_to_take_down,
2314
&interfaces_to_take_down_size,
2315
interface);
2316
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;
2317
2225
perror_plus("argz_add");
2318
2226
}
2319
2227
}
2350
2258
goto end;
2351
2259
}
2352
2260
2353
/* Try /run/tmp before /tmp */
2354
tempdir = mkdtemp(run_tempdir);
2355
if(tempdir == NULL and errno == ENOENT){
2356
if(debug){
2357
fprintf_plus(stderr, "Tempdir %s did not work, trying %s\n",
2358
run_tempdir, old_tempdir);
2359
}
2360
tempdir = mkdtemp(old_tempdir);
2361
}
2362
if(tempdir == NULL){
2261
if(mkdtemp(tempdir) == NULL){
2363
2262
perror_plus("mkdtemp");
2364
2263
goto end;
2365
2264
}
2265
tempdir_created = true;
2366
2266
2367
2267
if(quit_now){
2368
2268
goto end;
2443
2343
sleep((unsigned int)retry_interval);
2444
2344
}
2445
2345
2446
if(not quit_now){
2346
if (not quit_now){
2447
2347
exitcode = EXIT_SUCCESS;
2448
2348
}
2449
2349
2504
2404
if(debug){
2505
2405
fprintf_plus(stderr, "Starting Avahi loop search\n");
2506
2406
}
2507
2407
2508
2408
ret = avahi_loop_with_timeout(simple_poll,
2509
2409
(int)(retry_interval * 1000), &mc);
2510
2410
if(debug){
2551
2451
}
2552
2452
}
2553
2453
2554
/* Re-raise privileges */
2454
/* Re-raise priviliges */
2555
2455
{
2556
ret_errno = raise_privileges();
2557
if(ret_errno != 0){
2558
errno = ret_errno;
2559
perror_plus("Failed to raise privileges");
2560
} else {
2561
2562
/* Run network hooks */
2563
run_network_hooks("stop", interfaces_hooks != NULL ?
2564
interfaces_hooks : "", delay);
2565
2566
/* Take down the network interfaces which were brought up */
2567
{
2568
char *interface = NULL;
2569
while((interface=argz_next(interfaces_to_take_down,
2570
interfaces_to_take_down_size,
2571
interface))){
2572
ret_errno = take_down_interface(interface);
2573
if(ret_errno != 0){
2574
errno = ret_errno;
2575
perror_plus("Failed to take down interface");
2576
}
2577
}
2578
if(debug and (interfaces_to_take_down == NULL)){
2579
fprintf_plus(stderr, "No interfaces needed to be taken"
2580
" down\n");
2581
}
2582
}
2583
}
2584
2585
ret_errno = lower_privileges_permanently();
2586
if(ret_errno != 0){
2587
errno = ret_errno;
2588
perror_plus("Failed to lower privileges permanently");
2589
}
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();
2590
2481
}
2591
2482
2592
2483
free(interfaces_to_take_down);
2593
2484
free(interfaces_hooks);
2594
2485
2595
2486
/* Removes the GPGME temp directory and all files inside */
2596
if(tempdir != NULL){
2487
if(tempdir_created){
2597
2488
struct dirent **direntries = NULL;
2598
int tempdir_fd = (int)TEMP_FAILURE_RETRY(open(tempdir, O_RDONLY |
2599
O_NOFOLLOW));
2600
if(tempdir_fd == -1){
2601
perror_plus("open");
2602
} else {
2603
#ifdef __GLIBC__
2604
#if __GLIBC_PREREQ(2, 15)
2605
int numentries = scandirat(tempdir_fd, ".", &direntries,
2606
notdotentries, alphasort);
2607
#else /* not __GLIBC_PREREQ(2, 15) */
2608
int numentries = scandir(tempdir, &direntries, notdotentries,
2609
alphasort);
2610
#endif /* not __GLIBC_PREREQ(2, 15) */
2611
#else /* not __GLIBC__ */
2612
int numentries = scandir(tempdir, &direntries, notdotentries,
2613
alphasort);
2614
#endif /* not __GLIBC__ */
2615
if(numentries >= 0){
2616
for(int i = 0; i < numentries; i++){
2617
ret = unlinkat(tempdir_fd, direntries[i]->d_name, 0);
2618
if(ret == -1){
2619
fprintf_plus(stderr, "unlinkat(open(\"%s\", O_RDONLY),"
2620
" \"%s\", 0): %s\n", tempdir,
2621
direntries[i]->d_name, strerror(errno));
2622
}
2623
}
2624
2625
/* need to clean even if 0 because man page doesn't specify */
2626
free(direntries);
2627
if(numentries == -1){
2628
perror_plus("scandir");
2629
}
2630
ret = rmdir(tempdir);
2631
if(ret == -1 and errno != ENOENT){
2632
perror_plus("rmdir");
2633
}
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);
2634
2508
}
2635
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");
2636
2519
}
2637
2520
}
2638
2521
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0