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- Committer: Teddy Hogeborn
- Date: 2013-10-20 15:25:09 UTC
- Revision ID: teddy@recompile.se-20131020152509-zkhuy2yse76w10hg
* Makefile (CFLAGS, LDFLAGS): Keep default flags from environment.
(purge-server): PID file changed to "/run/mandos.pid".
* debian/compat: Changed to "9".
* debian/control (Standards-Version): Updated to "3.9.4".
(DM-Upload-Allowed): Removed.
(mandos/Depends): Add "initscripts (>= 2.88dsf-13.3)" to be able to
use the "/run" directory (for mandos.pid).
* debian/copyright (Copyright): Update year.
* init.d-mandos (PIDFILE): Changed to "/run/mandos.pid".
* mandos: Update copyright year.
(pidfilename): Changed to "/run/mandos.pid".
* mandos-clients.conf.xml (OPTIONS/approval_delay): Bug fix: default
is "PT0S" - using
the new RFC 3339
duration syntax.
* mandos-keygen: Update copyright year.
* mandos-monitor: - '' -
* mandos.conf.xml: - '' -
* mandos.xml: - '' -
(FILES): PID file changed to "/run/mandos.pid".
* plugin-runner.c: Update copyright year.
* plugins.d/mandos-client.c: - '' -
* plugins.d/mandos-client.xml: - '' -
* plugins.d/password-prompt.c: - '' -
* plugins.d/plymouth.c: - '' -
(purge-server): PID file changed to "/run/mandos.pid".
* debian/compat: Changed to "9".
* debian/control (Standards-Version): Updated to "3.9.4".
(DM-Upload-Allowed): Removed.
(mandos/Depends): Add "initscripts (>= 2.88dsf-13.3)" to be able to
use the "/run" directory (for mandos.pid).
* debian/copyright (Copyright): Update year.
* init.d-mandos (PIDFILE): Changed to "/run/mandos.pid".
* mandos: Update copyright year.
(pidfilename): Changed to "/run/mandos.pid".
* mandos-clients.conf.xml (OPTIONS/approval_delay): Bug fix: default
is "PT0S" - using
the new RFC 3339
duration syntax.
* mandos-keygen: Update copyright year.
* mandos-monitor: - '' -
* mandos.conf.xml: - '' -
* mandos.xml: - '' -
(FILES): PID file changed to "/run/mandos.pid".
* plugin-runner.c: Update copyright year.
* plugins.d/mandos-client.c: - '' -
* plugins.d/mandos-client.xml: - '' -
* plugins.d/password-prompt.c: - '' -
* plugins.d/plymouth.c: - '' -
- files removed:
- debian/upstream
- files modified:
- DBUS-API
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
if(IN6_IS_ADDR_LINKLOCAL /* Spurious warnings from */
740
(&to.in6.sin6_addr)){ /* -Wstrict-aliasing=2 or lower and
741
-Wunreachable-code*/
769
742
if(if_index == AVAHI_IF_UNSPEC){
770
743
fprintf_plus(stderr, "An IPv6 link-local address is"
771
744
" incomplete without a network interface\n");
773
746
goto mandos_end;
774
747
}
775
748
/* Set the network interface number as scope */
776
((struct sockaddr_in6 *)&to)->sin6_scope_id = (uint32_t)if_index;
749
to.in6.sin6_scope_id = (uint32_t)if_index;
777
750
}
778
751
} else {
779
((struct sockaddr_in *)&to)->sin_port = htons(port);
752
to.in.sin_port = htons(port); /* Spurious warnings from
753
-Wconversion and
754
-Wunreachable-code */
780
755
}
781
756
782
757
if(quit_now){
799
774
}
800
775
char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
801
776
INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
777
const char *pcret;
802
778
if(af == AF_INET6){
803
ret = getnameinfo((struct sockaddr *)&to,
804
sizeof(struct sockaddr_in6),
805
addrstr, sizeof(addrstr), NULL, 0,
806
NI_NUMERICHOST);
779
pcret = inet_ntop(af, &(to.in6.sin6_addr), addrstr,
780
sizeof(addrstr));
807
781
} else {
808
ret = getnameinfo((struct sockaddr *)&to,
809
sizeof(struct sockaddr_in),
810
addrstr, sizeof(addrstr), NULL, 0,
811
NI_NUMERICHOST);
782
pcret = inet_ntop(af, &(to.in.sin_addr), addrstr,
783
sizeof(addrstr));
812
784
}
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);
785
if(pcret == NULL){
786
perror_plus("inet_ntop");
787
} else {
788
if(strcmp(addrstr, ip) != 0){
789
fprintf_plus(stderr, "Canonical address form: %s\n", addrstr);
790
}
819
791
}
820
792
}
821
793
825
797
}
826
798
827
799
if(af == AF_INET6){
828
ret = connect(tcp_sd, (struct sockaddr *)&to,
829
sizeof(struct sockaddr_in6));
800
ret = connect(tcp_sd, &to.in6, sizeof(to));
830
801
} else {
831
ret = connect(tcp_sd, (struct sockaddr *)&to, /* IPv4 */
832
sizeof(struct sockaddr_in));
802
ret = connect(tcp_sd, &to.in, sizeof(to)); /* IPv4 */
833
803
}
834
804
if(ret < 0){
835
if((errno != ECONNREFUSED and errno != ENETUNREACH) or debug){
805
if ((errno != ECONNREFUSED and errno != ENETUNREACH) or debug){
836
806
int e = errno;
837
807
perror_plus("connect");
838
808
errno = e;
1053
1023
return retval;
1054
1024
}
1055
1025
1056
__attribute__((nonnull))
1057
1026
static void resolve_callback(AvahiSServiceResolver *r,
1058
1027
AvahiIfIndex interface,
1059
1028
AvahiProtocol proto,
1067
1036
AVAHI_GCC_UNUSED AvahiStringList *txt,
1068
1037
AVAHI_GCC_UNUSED AvahiLookupResultFlags
1069
1038
flags,
1070
void *mc){
1039
void* mc){
1071
1040
if(r == NULL){
1072
1041
return;
1073
1042
}
1076
1045
timed out */
1077
1046
1078
1047
if(quit_now){
1079
avahi_s_service_resolver_free(r);
1080
1048
return;
1081
1049
}
1082
1050
1127
1095
const char *domain,
1128
1096
AVAHI_GCC_UNUSED AvahiLookupResultFlags
1129
1097
flags,
1130
void *mc){
1098
void* mc){
1131
1099
if(b == NULL){
1132
1100
return;
1133
1101
}
1193
1161
errno = old_errno;
1194
1162
}
1195
1163
1196
__attribute__((nonnull, warn_unused_result))
1197
1164
bool get_flags(const char *ifname, struct ifreq *ifr){
1198
1165
int ret;
1199
1166
error_t ret_errno;
1218
1185
return true;
1219
1186
}
1220
1187
1221
__attribute__((nonnull, warn_unused_result))
1222
1188
bool good_flags(const char *ifname, const struct ifreq *ifr){
1223
1189
1224
1190
/* Reject the loopback device */
1266
1232
* corresponds to an acceptable network device.
1267
1233
* (This function is passed to scandir(3) as a filter function.)
1268
1234
*/
1269
__attribute__((nonnull, warn_unused_result))
1270
1235
int good_interface(const struct dirent *if_entry){
1271
1236
if(if_entry->d_name[0] == '.'){
1272
1237
return 0;
1290
1255
/*
1291
1256
* This function determines if a network interface is up.
1292
1257
*/
1293
__attribute__((nonnull, warn_unused_result))
1294
1258
bool interface_is_up(const char *interface){
1295
1259
struct ifreq ifr;
1296
1260
if(not get_flags(interface, &ifr)){
1307
1271
/*
1308
1272
* This function determines if a network interface is running
1309
1273
*/
1310
__attribute__((nonnull, warn_unused_result))
1311
1274
bool interface_is_running(const char *interface){
1312
1275
struct ifreq ifr;
1313
1276
if(not get_flags(interface, &ifr)){
1321
1284
return (bool)(ifr.ifr_flags & IFF_RUNNING);
1322
1285
}
1323
1286
1324
__attribute__((nonnull, pure, warn_unused_result))
1325
1287
int notdotentries(const struct dirent *direntry){
1326
1288
/* Skip "." and ".." */
1327
1289
if(direntry->d_name[0] == '.'
1334
1296
}
1335
1297
1336
1298
/* Is this directory entry a runnable program? */
1337
__attribute__((nonnull, warn_unused_result))
1338
1299
int runnable_hook(const struct dirent *direntry){
1339
1300
int ret;
1340
1301
size_t sret;
1348
1309
sret = strspn(direntry->d_name, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1349
1310
"abcdefghijklmnopqrstuvwxyz"
1350
1311
"0123456789"
1351
"_.-");
1312
"_-");
1352
1313
if((direntry->d_name)[sret] != '\0'){
1353
1314
/* Contains non-allowed characters */
1354
1315
if(debug){
1358
1319
return 0;
1359
1320
}
1360
1321
1361
ret = fstatat(hookdir_fd, direntry->d_name, &st, 0);
1322
char *fullname = NULL;
1323
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1324
if(ret < 0){
1325
perror_plus("asprintf");
1326
return 0;
1327
}
1328
1329
ret = stat(fullname, &st);
1362
1330
if(ret == -1){
1363
1331
if(debug){
1364
1332
perror_plus("Could not stat hook");
1388
1356
return 1;
1389
1357
}
1390
1358
1391
__attribute__((nonnull, warn_unused_result))
1392
1359
int avahi_loop_with_timeout(AvahiSimplePoll *s, int retry_interval,
1393
1360
mandos_context *mc){
1394
1361
int ret;
1398
1365
1399
1366
while(true){
1400
1367
if(mc->current_server == NULL){
1401
if(debug){
1368
if (debug){
1402
1369
fprintf_plus(stderr, "Wait until first server is found."
1403
1370
" No timeout!\n");
1404
1371
}
1405
1372
ret = avahi_simple_poll_iterate(s, -1);
1406
1373
} else {
1407
if(debug){
1374
if (debug){
1408
1375
fprintf_plus(stderr, "Check current_server if we should run"
1409
1376
" it, or wait\n");
1410
1377
}
1427
1394
- ((intmax_t)waited_time.tv_sec * 1000))
1428
1395
- ((intmax_t)waited_time.tv_nsec / 1000000));
1429
1396
1430
if(debug){
1397
if (debug){
1431
1398
fprintf_plus(stderr, "Blocking for %" PRIdMAX " ms\n",
1432
1399
block_time);
1433
1400
}
1455
1422
ret = avahi_simple_poll_iterate(s, (int)block_time);
1456
1423
}
1457
1424
if(ret != 0){
1458
if(ret > 0 or errno != EINTR){
1425
if (ret > 0 or errno != EINTR){
1459
1426
return (ret != 1) ? ret : 0;
1460
1427
}
1461
1428
}
1463
1430
}
1464
1431
1465
1432
/* Set effective uid to 0, return errno */
1466
__attribute__((warn_unused_result))
1467
1433
error_t raise_privileges(void){
1468
1434
error_t old_errno = errno;
1469
1435
error_t ret_errno = 0;
1470
1436
if(seteuid(0) == -1){
1471
1437
ret_errno = errno;
1438
perror_plus("seteuid");
1472
1439
}
1473
1440
errno = old_errno;
1474
1441
return ret_errno;
1475
1442
}
1476
1443
1477
1444
/* Set effective and real user ID to 0. Return errno. */
1478
__attribute__((warn_unused_result))
1479
1445
error_t raise_privileges_permanently(void){
1480
1446
error_t old_errno = errno;
1481
1447
error_t ret_errno = raise_privileges();
1485
1451
}
1486
1452
if(setuid(0) == -1){
1487
1453
ret_errno = errno;
1454
perror_plus("seteuid");
1488
1455
}
1489
1456
errno = old_errno;
1490
1457
return ret_errno;
1491
1458
}
1492
1459
1493
1460
/* Set effective user ID to unprivileged saved user ID */
1494
__attribute__((warn_unused_result))
1495
1461
error_t lower_privileges(void){
1496
1462
error_t old_errno = errno;
1497
1463
error_t ret_errno = 0;
1498
1464
if(seteuid(uid) == -1){
1499
1465
ret_errno = errno;
1466
perror_plus("seteuid");
1500
1467
}
1501
1468
errno = old_errno;
1502
1469
return ret_errno;
1503
1470
}
1504
1471
1505
1472
/* Lower privileges permanently */
1506
__attribute__((warn_unused_result))
1507
1473
error_t lower_privileges_permanently(void){
1508
1474
error_t old_errno = errno;
1509
1475
error_t ret_errno = 0;
1510
1476
if(setuid(uid) == -1){
1511
1477
ret_errno = errno;
1478
perror_plus("setuid");
1512
1479
}
1513
1480
errno = old_errno;
1514
1481
return ret_errno;
1515
1482
}
1516
1483
1517
__attribute__((nonnull))
1518
void run_network_hooks(const char *mode, const char *interface,
1484
bool run_network_hooks(const char *mode, const char *interface,
1519
1485
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__ */
1486
struct dirent **direntries;
1487
struct dirent *direntry;
1488
int ret;
1489
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1490
alphasort);
1547
1491
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);
1492
if(errno == ENOENT){
1493
if(debug){
1494
fprintf_plus(stderr, "Network hook directory \"%s\" not"
1495
" found\n", hookdir);
1496
}
1497
} else {
1498
perror_plus("scandir");
1559
1499
}
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){
1500
} else {
1501
int devnull = open("/dev/null", O_RDONLY);
1502
for(int i = 0; i < numhooks; i++){
1503
direntry = direntries[i];
1504
char *fullname = NULL;
1505
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1506
if(ret < 0){
1621
1507
perror_plus("asprintf");
1622
_exit(EX_OSERR);
1623
}
1624
ret = setenv("DELAY", delaystring, 1);
1625
if(ret == -1){
1508
continue;
1509
}
1510
if(debug){
1511
fprintf_plus(stderr, "Running network hook \"%s\"\n",
1512
direntry->d_name);
1513
}
1514
pid_t hook_pid = fork();
1515
if(hook_pid == 0){
1516
/* Child */
1517
/* Raise privileges */
1518
raise_privileges_permanently();
1519
/* Set group */
1520
errno = 0;
1521
ret = setgid(0);
1522
if(ret == -1){
1523
perror_plus("setgid");
1524
}
1525
/* Reset supplementary groups */
1526
errno = 0;
1527
ret = setgroups(0, NULL);
1528
if(ret == -1){
1529
perror_plus("setgroups");
1530
}
1531
dup2(devnull, STDIN_FILENO);
1532
close(devnull);
1533
dup2(STDERR_FILENO, STDOUT_FILENO);
1534
ret = setenv("MANDOSNETHOOKDIR", hookdir, 1);
1535
if(ret == -1){
1536
perror_plus("setenv");
1537
_exit(EX_OSERR);
1538
}
1539
ret = setenv("DEVICE", interface, 1);
1540
if(ret == -1){
1541
perror_plus("setenv");
1542
_exit(EX_OSERR);
1543
}
1544
ret = setenv("VERBOSITY", debug ? "1" : "0", 1);
1545
if(ret == -1){
1546
perror_plus("setenv");
1547
_exit(EX_OSERR);
1548
}
1549
ret = setenv("MODE", mode, 1);
1550
if(ret == -1){
1551
perror_plus("setenv");
1552
_exit(EX_OSERR);
1553
}
1554
char *delaystring;
1555
ret = asprintf(&delaystring, "%f", delay);
1556
if(ret == -1){
1557
perror_plus("asprintf");
1558
_exit(EX_OSERR);
1559
}
1560
ret = setenv("DELAY", delaystring, 1);
1561
if(ret == -1){
1562
free(delaystring);
1563
perror_plus("setenv");
1564
_exit(EX_OSERR);
1565
}
1626
1566
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
if(hook_pid == -1){
1654
perror_plus("fork");
1655
free(direntry);
1656
continue;
1657
}
1658
int status;
1659
if(TEMP_FAILURE_RETRY(waitpid(hook_pid, &status, 0)) == -1){
1660
perror_plus("waitpid");
1661
free(direntry);
1662
continue;
1663
}
1664
if(WIFEXITED(status)){
1665
if(WEXITSTATUS(status) != 0){
1666
fprintf_plus(stderr, "Warning: network hook \"%s\" exited"
1667
" with status %d\n", direntry->d_name,
1668
WEXITSTATUS(status));
1669
free(direntry);
1670
continue;
1671
}
1672
} else if(WIFSIGNALED(status)){
1673
fprintf_plus(stderr, "Warning: network hook \"%s\" died by"
1674
" signal %d\n", direntry->d_name,
1675
WTERMSIG(status));
1676
free(direntry);
1677
continue;
1567
if(connect_to != NULL){
1568
ret = setenv("CONNECT", connect_to, 1);
1569
if(ret == -1){
1570
perror_plus("setenv");
1571
_exit(EX_OSERR);
1572
}
1573
}
1574
if(execl(fullname, direntry->d_name, mode, NULL) == -1){
1575
perror_plus("execl");
1576
_exit(EXIT_FAILURE);
1577
}
1678
1578
} else {
1679
fprintf_plus(stderr, "Warning: network hook \"%s\""
1680
" crashed\n", direntry->d_name);
1681
free(direntry);
1682
continue;
1683
}
1684
}
1685
if(debug){
1686
fprintf_plus(stderr, "Network hook \"%s\" ran successfully\n",
1687
direntry->d_name);
1688
}
1689
free(direntry);
1690
}
1691
free(direntries);
1692
if((int)TEMP_FAILURE_RETRY(close(hookdir_fd)) == -1){
1693
perror_plus("close");
1694
} else {
1695
hookdir_fd = -1;
1696
}
1697
close(devnull);
1579
int status;
1580
if(TEMP_FAILURE_RETRY(waitpid(hook_pid, &status, 0)) == -1){
1581
perror_plus("waitpid");
1582
free(fullname);
1583
continue;
1584
}
1585
if(WIFEXITED(status)){
1586
if(WEXITSTATUS(status) != 0){
1587
fprintf_plus(stderr, "Warning: network hook \"%s\" exited"
1588
" with status %d\n", direntry->d_name,
1589
WEXITSTATUS(status));
1590
free(fullname);
1591
continue;
1592
}
1593
} else if(WIFSIGNALED(status)){
1594
fprintf_plus(stderr, "Warning: network hook \"%s\" died by"
1595
" signal %d\n", direntry->d_name,
1596
WTERMSIG(status));
1597
free(fullname);
1598
continue;
1599
} else {
1600
fprintf_plus(stderr, "Warning: network hook \"%s\""
1601
" crashed\n", direntry->d_name);
1602
free(fullname);
1603
continue;
1604
}
1605
}
1606
free(fullname);
1607
if(debug){
1608
fprintf_plus(stderr, "Network hook \"%s\" ran successfully\n",
1609
direntry->d_name);
1610
}
1611
}
1612
close(devnull);
1613
}
1614
return true;
1698
1615
}
1699
1616
1700
__attribute__((nonnull, warn_unused_result))
1701
1617
error_t bring_up_interface(const char *const interface,
1702
1618
const float delay){
1619
int sd = -1;
1703
1620
error_t old_errno = errno;
1704
int ret;
1621
error_t ret_errno = 0;
1622
int ret, ret_setflags;
1705
1623
struct ifreq network;
1706
1624
unsigned int if_index = if_nametoindex(interface);
1707
1625
if(if_index == 0){
1716
1634
}
1717
1635
1718
1636
if(not interface_is_up(interface)){
1719
error_t ret_errno = 0, ioctl_errno = 0;
1720
if(not get_flags(interface, &network)){
1637
if(not get_flags(interface, &network) and debug){
1721
1638
ret_errno = errno;
1722
1639
fprintf_plus(stderr, "Failed to get flags for interface "
1723
1640
"\"%s\"\n", interface);
1724
errno = old_errno;
1725
1641
return ret_errno;
1726
1642
}
1727
network.ifr_flags |= IFF_UP; /* set flag */
1643
network.ifr_flags |= IFF_UP;
1728
1644
1729
int sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1730
if(sd == -1){
1645
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1646
if(sd < 0){
1731
1647
ret_errno = errno;
1732
1648
perror_plus("socket");
1733
1649
errno = old_errno;
1734
1650
return ret_errno;
1735
1651
}
1736
1652
1737
1653
if(quit_now){
1738
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1739
if(ret == -1){
1740
perror_plus("close");
1741
}
1654
close(sd);
1742
1655
errno = old_errno;
1743
1656
return EINTR;
1744
1657
}
1748
1661
interface);
1749
1662
}
1750
1663
1751
/* Raise privileges */
1752
ret_errno = raise_privileges();
1753
if(ret_errno != 0){
1754
errno = ret_errno;
1755
perror_plus("Failed to raise privileges");
1756
}
1664
/* Raise priviliges */
1665
raise_privileges();
1757
1666
1758
1667
#ifdef __linux__
1759
int ret_linux;
1760
bool restore_loglevel = false;
1761
if(ret_errno == 0){
1762
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1763
messages about the network interface to mess up the prompt */
1764
ret_linux = klogctl(8, NULL, 5);
1765
if(ret_linux == -1){
1766
perror_plus("klogctl");
1767
} else {
1768
restore_loglevel = true;
1769
}
1668
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1669
messages about the network interface to mess up the prompt */
1670
int ret_linux = klogctl(8, NULL, 5);
1671
bool restore_loglevel = true;
1672
if(ret_linux == -1){
1673
restore_loglevel = false;
1674
perror_plus("klogctl");
1770
1675
}
1771
1676
#endif /* __linux__ */
1772
int ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
1773
ioctl_errno = errno;
1677
ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
1678
ret_errno = errno;
1774
1679
#ifdef __linux__
1775
1680
if(restore_loglevel){
1776
1681
ret_linux = klogctl(7, NULL, 0);
1780
1685
}
1781
1686
#endif /* __linux__ */
1782
1687
1783
/* If raise_privileges() succeeded above */
1784
if(ret_errno == 0){
1785
/* Lower privileges */
1786
ret_errno = lower_privileges();
1787
if(ret_errno != 0){
1788
errno = ret_errno;
1789
perror_plus("Failed to lower privileges");
1790
}
1791
}
1688
/* Lower privileges */
1689
lower_privileges();
1792
1690
1793
1691
/* Close the socket */
1794
1692
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1797
1695
}
1798
1696
1799
1697
if(ret_setflags == -1){
1800
errno = ioctl_errno;
1698
errno = ret_errno;
1801
1699
perror_plus("ioctl SIOCSIFFLAGS +IFF_UP");
1802
1700
errno = old_errno;
1803
return ioctl_errno;
1701
return ret_errno;
1804
1702
}
1805
1703
} else if(debug){
1806
1704
fprintf_plus(stderr, "Interface \"%s\" is already up; good\n",
1824
1722
return 0;
1825
1723
}
1826
1724
1827
__attribute__((nonnull, warn_unused_result))
1828
1725
error_t take_down_interface(const char *const interface){
1726
int sd = -1;
1829
1727
error_t old_errno = errno;
1728
error_t ret_errno = 0;
1729
int ret, ret_setflags;
1830
1730
struct ifreq network;
1831
1731
unsigned int if_index = if_nametoindex(interface);
1832
1732
if(if_index == 0){
1835
1735
return ENXIO;
1836
1736
}
1837
1737
if(interface_is_up(interface)){
1838
error_t ret_errno = 0, ioctl_errno = 0;
1839
1738
if(not get_flags(interface, &network) and debug){
1840
1739
ret_errno = errno;
1841
1740
fprintf_plus(stderr, "Failed to get flags for interface "
1842
1741
"\"%s\"\n", interface);
1843
errno = old_errno;
1844
1742
return ret_errno;
1845
1743
}
1846
1744
network.ifr_flags &= ~(short)IFF_UP; /* clear flag */
1847
1745
1848
int sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1849
if(sd == -1){
1746
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1747
if(sd < 0){
1850
1748
ret_errno = errno;
1851
1749
perror_plus("socket");
1852
1750
errno = old_errno;
1858
1756
interface);
1859
1757
}
1860
1758
1861
/* Raise privileges */
1862
ret_errno = raise_privileges();
1863
if(ret_errno != 0){
1864
errno = ret_errno;
1865
perror_plus("Failed to raise privileges");
1866
}
1867
1868
int ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
1869
ioctl_errno = errno;
1870
1871
/* If raise_privileges() succeeded above */
1872
if(ret_errno == 0){
1873
/* Lower privileges */
1874
ret_errno = lower_privileges();
1875
if(ret_errno != 0){
1876
errno = ret_errno;
1877
perror_plus("Failed to lower privileges");
1878
}
1879
}
1759
/* Raise priviliges */
1760
raise_privileges();
1761
1762
ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
1763
ret_errno = errno;
1764
1765
/* Lower privileges */
1766
lower_privileges();
1880
1767
1881
1768
/* Close the socket */
1882
int ret = (int)TEMP_FAILURE_RETRY(close(sd));
1769
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1883
1770
if(ret == -1){
1884
1771
perror_plus("close");
1885
1772
}
1886
1773
1887
1774
if(ret_setflags == -1){
1888
errno = ioctl_errno;
1775
errno = ret_errno;
1889
1776
perror_plus("ioctl SIOCSIFFLAGS -IFF_UP");
1890
1777
errno = old_errno;
1891
return ioctl_errno;
1778
return ret_errno;
1892
1779
}
1893
1780
} else if(debug){
1894
1781
fprintf_plus(stderr, "Interface \"%s\" is already down; odd\n",
1902
1789
int main(int argc, char *argv[]){
1903
1790
mandos_context mc = { .server = NULL, .dh_bits = 1024,
1904
1791
.priority = "SECURE256:!CTYPE-X.509:"
1905
"+CTYPE-OPENPGP", .current_server = NULL,
1792
"+CTYPE-OPENPGP", .current_server = NULL,
1906
1793
.interfaces = NULL, .interfaces_size = 0 };
1907
1794
AvahiSServiceBrowser *sb = NULL;
1908
1795
error_t ret_errno;
1912
1799
int exitcode = EXIT_SUCCESS;
1913
1800
char *interfaces_to_take_down = NULL;
1914
1801
size_t interfaces_to_take_down_size = 0;
1915
char run_tempdir[] = "/run/tmp/mandosXXXXXX";
1916
char old_tempdir[] = "/tmp/mandosXXXXXX";
1917
char *tempdir = NULL;
1802
char tempdir[] = "/tmp/mandosXXXXXX";
1803
bool tempdir_created = false;
1918
1804
AvahiIfIndex if_index = AVAHI_IF_UNSPEC;
1919
1805
const char *seckey = PATHDIR "/" SECKEY;
1920
1806
const char *pubkey = PATHDIR "/" PUBKEY;
1921
1807
char *interfaces_hooks = NULL;
1808
size_t interfaces_hooks_size = 0;
1922
1809
1923
1810
bool gnutls_initialized = false;
1924
1811
bool gpgme_initialized = false;
2102
1989
/* Work around Debian bug #633582:
2103
1990
<http://bugs.debian.org/633582> */
2104
1991
2105
/* Re-raise privileges */
2106
ret_errno = raise_privileges();
2107
if(ret_errno != 0){
2108
errno = ret_errno;
2109
perror_plus("Failed to raise privileges");
2110
} else {
1992
/* Re-raise priviliges */
1993
if(raise_privileges() == 0){
2111
1994
struct stat st;
2112
1995
2113
1996
if(strcmp(seckey, PATHDIR "/" SECKEY) == 0){
2153
2036
}
2154
2037
2155
2038
/* Lower privileges */
2156
ret_errno = lower_privileges();
2157
if(ret_errno != 0){
2158
errno = ret_errno;
2159
perror_plus("Failed to lower privileges");
2160
}
2039
lower_privileges();
2161
2040
}
2162
2041
}
2163
2042
2187
2066
goto end;
2188
2067
}
2189
2068
memcpy(interfaces_hooks, mc.interfaces, mc.interfaces_size);
2190
argz_stringify(interfaces_hooks, mc.interfaces_size, (int)',');
2191
}
2192
run_network_hooks("start", interfaces_hooks != NULL ?
2193
interfaces_hooks : "", delay);
2069
interfaces_hooks_size = mc.interfaces_size;
2070
argz_stringify(interfaces_hooks, interfaces_hooks_size,
2071
(int)',');
2072
}
2073
if(not run_network_hooks("start", interfaces_hooks != NULL ?
2074
interfaces_hooks : "", delay)){
2075
goto end;
2076
}
2194
2077
}
2195
2078
2196
2079
if(not debug){
2274
2157
2275
2158
/* If no interfaces were specified, make a list */
2276
2159
if(mc.interfaces == NULL){
2277
struct dirent **direntries = NULL;
2160
struct dirent **direntries;
2278
2161
/* Look for any good interfaces */
2279
2162
ret = scandir(sys_class_net, &direntries, good_interface,
2280
2163
alphasort);
2284
2167
ret_errno = argz_add(&mc.interfaces, &mc.interfaces_size,
2285
2168
direntries[i]->d_name);
2286
2169
if(ret_errno != 0){
2287
errno = ret_errno;
2288
2170
perror_plus("argz_add");
2289
free(direntries[i]);
2290
2171
continue;
2291
2172
}
2292
2173
if(debug){
2293
2174
fprintf_plus(stderr, "Will use interface \"%s\"\n",
2294
2175
direntries[i]->d_name);
2295
2176
}
2296
free(direntries[i]);
2297
2177
}
2298
2178
free(direntries);
2299
2179
} else {
2300
if(ret == 0){
2301
free(direntries);
2302
}
2180
free(direntries);
2303
2181
fprintf_plus(stderr, "Could not find a network interface\n");
2304
2182
exitcode = EXIT_FAILURE;
2305
2183
goto end;
2328
2206
break;
2329
2207
}
2330
2208
bool interface_was_up = interface_is_up(interface);
2331
errno = bring_up_interface(interface, delay);
2209
ret = bring_up_interface(interface, delay);
2332
2210
if(not interface_was_up){
2333
if(errno != 0){
2211
if(ret != 0){
2212
errno = ret;
2334
2213
perror_plus("Failed to bring up interface");
2335
2214
} else {
2336
errno = argz_add(&interfaces_to_take_down,
2337
&interfaces_to_take_down_size,
2338
interface);
2339
if(errno != 0){
2340
perror_plus("argz_add");
2341
}
2215
ret_errno = argz_add(&interfaces_to_take_down,
2216
&interfaces_to_take_down_size,
2217
interface);
2342
2218
}
2343
2219
}
2344
2220
}
2373
2249
goto end;
2374
2250
}
2375
2251
2376
/* Try /run/tmp before /tmp */
2377
tempdir = mkdtemp(run_tempdir);
2378
if(tempdir == NULL and errno == ENOENT){
2379
if(debug){
2380
fprintf_plus(stderr, "Tempdir %s did not work, trying %s\n",
2381
run_tempdir, old_tempdir);
2382
}
2383
tempdir = mkdtemp(old_tempdir);
2384
}
2385
if(tempdir == NULL){
2252
if(mkdtemp(tempdir) == NULL){
2386
2253
perror_plus("mkdtemp");
2387
2254
goto end;
2388
2255
}
2256
tempdir_created = true;
2389
2257
2390
2258
if(quit_now){
2391
2259
goto end;
2466
2334
sleep((unsigned int)retry_interval);
2467
2335
}
2468
2336
2469
if(not quit_now){
2337
if (not quit_now){
2470
2338
exitcode = EXIT_SUCCESS;
2471
2339
}
2472
2340
2527
2395
if(debug){
2528
2396
fprintf_plus(stderr, "Starting Avahi loop search\n");
2529
2397
}
2530
2398
2531
2399
ret = avahi_loop_with_timeout(simple_poll,
2532
2400
(int)(retry_interval * 1000), &mc);
2533
2401
if(debug){
2569
2437
mc.current_server->prev->next = NULL;
2570
2438
while(mc.current_server != NULL){
2571
2439
server *next = mc.current_server->next;
2572
#ifdef __GNUC__
2573
#pragma GCC diagnostic push
2574
#pragma GCC diagnostic ignored "-Wcast-qual"
2575
#endif
2576
free((char *)(mc.current_server->ip));
2577
#ifdef __GNUC__
2578
#pragma GCC diagnostic pop
2579
#endif
2580
2440
free(mc.current_server);
2581
2441
mc.current_server = next;
2582
2442
}
2583
2443
}
2584
2444
2585
/* Re-raise privileges */
2445
/* Re-raise priviliges */
2586
2446
{
2587
ret_errno = raise_privileges();
2588
if(ret_errno != 0){
2589
errno = ret_errno;
2590
perror_plus("Failed to raise privileges");
2591
} else {
2592
2593
/* Run network hooks */
2594
run_network_hooks("stop", interfaces_hooks != NULL ?
2595
interfaces_hooks : "", delay);
2596
2597
/* Take down the network interfaces which were brought up */
2598
{
2599
char *interface = NULL;
2600
while((interface=argz_next(interfaces_to_take_down,
2601
interfaces_to_take_down_size,
2602
interface))){
2603
ret_errno = take_down_interface(interface);
2604
if(ret_errno != 0){
2605
errno = ret_errno;
2606
perror_plus("Failed to take down interface");
2607
}
2608
}
2609
if(debug and (interfaces_to_take_down == NULL)){
2610
fprintf_plus(stderr, "No interfaces needed to be taken"
2611
" down\n");
2612
}
2613
}
2614
}
2615
2616
ret_errno = lower_privileges_permanently();
2617
if(ret_errno != 0){
2618
errno = ret_errno;
2619
perror_plus("Failed to lower privileges permanently");
2620
}
2447
raise_privileges();
2448
2449
/* Run network hooks */
2450
run_network_hooks("stop", interfaces_hooks != NULL ?
2451
interfaces_hooks : "", delay);
2452
2453
/* Take down the network interfaces which were brought up */
2454
{
2455
char *interface = NULL;
2456
while((interface=argz_next(interfaces_to_take_down,
2457
interfaces_to_take_down_size,
2458
interface))){
2459
ret_errno = take_down_interface(interface);
2460
if(ret_errno != 0){
2461
errno = ret_errno;
2462
perror_plus("Failed to take down interface");
2463
}
2464
}
2465
if(debug and (interfaces_to_take_down == NULL)){
2466
fprintf_plus(stderr, "No interfaces needed to be taken"
2467
" down\n");
2468
}
2469
}
2470
2471
lower_privileges_permanently();
2621
2472
}
2622
2473
2623
2474
free(interfaces_to_take_down);
2624
2475
free(interfaces_hooks);
2625
2476
2626
2477
/* Removes the GPGME temp directory and all files inside */
2627
if(tempdir != NULL){
2478
if(tempdir_created){
2628
2479
struct dirent **direntries = NULL;
2629
int tempdir_fd = (int)TEMP_FAILURE_RETRY(open(tempdir, O_RDONLY |
2630
O_NOFOLLOW));
2631
if(tempdir_fd == -1){
2632
perror_plus("open");
2633
} else {
2634
#ifdef __GLIBC__
2635
#if __GLIBC_PREREQ(2, 15)
2636
int numentries = scandirat(tempdir_fd, ".", &direntries,
2637
notdotentries, alphasort);
2638
#else /* not __GLIBC_PREREQ(2, 15) */
2639
int numentries = scandir(tempdir, &direntries, notdotentries,
2640
alphasort);
2641
#endif /* not __GLIBC_PREREQ(2, 15) */
2642
#else /* not __GLIBC__ */
2643
int numentries = scandir(tempdir, &direntries, notdotentries,
2644
alphasort);
2645
#endif /* not __GLIBC__ */
2646
if(numentries >= 0){
2647
for(int i = 0; i < numentries; i++){
2648
ret = unlinkat(tempdir_fd, direntries[i]->d_name, 0);
2649
if(ret == -1){
2650
fprintf_plus(stderr, "unlinkat(open(\"%s\", O_RDONLY),"
2651
" \"%s\", 0): %s\n", tempdir,
2652
direntries[i]->d_name, strerror(errno));
2653
}
2654
free(direntries[i]);
2655
}
2656
2657
/* need to clean even if 0 because man page doesn't specify */
2658
free(direntries);
2659
if(numentries == -1){
2660
perror_plus("scandir");
2661
}
2662
ret = rmdir(tempdir);
2663
if(ret == -1 and errno != ENOENT){
2664
perror_plus("rmdir");
2665
}
2480
struct dirent *direntry = NULL;
2481
int numentries = scandir(tempdir, &direntries, notdotentries,
2482
alphasort);
2483
if (numentries > 0){
2484
for(int i = 0; i < numentries; i++){
2485
direntry = direntries[i];
2486
char *fullname = NULL;
2487
ret = asprintf(&fullname, "%s/%s", tempdir,
2488
direntry->d_name);
2489
if(ret < 0){
2490
perror_plus("asprintf");
2491
continue;
2492
}
2493
ret = remove(fullname);
2494
if(ret == -1){
2495
fprintf_plus(stderr, "remove(\"%s\"): %s\n", fullname,
2496
strerror(errno));
2497
}
2498
free(fullname);
2666
2499
}
2667
TEMP_FAILURE_RETRY(close(tempdir_fd));
2500
}
2501
2502
/* need to clean even if 0 because man page doesn't specify */
2503
free(direntries);
2504
if (numentries == -1){
2505
perror_plus("scandir");
2506
}
2507
ret = rmdir(tempdir);
2508
if(ret == -1 and errno != ENOENT){
2509
perror_plus("rmdir");
2668
2510
}
2669
2511
}
2670
2512
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0