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- Committer: Teddy Hogeborn
- Date: 2014-03-23 19:24:40 UTC
- Revision ID: teddy@recompile.se-20140323192440-d71iiqxebsxf9u2v
Update GCC warning flags and function attributes to GCC 4.7.
* Makefile (WARN): Update to include almost all warning flags.
* plugin-runner.c (getplugin, add_to_char_array, add_argument,
add_environment, set_cloexec_flag,
print_out_password): Add attribute
"warn_unused_result".
(main/parse_opt): Bug fix: Add error checking to --global-env,
--env-for, --plugin-dir, and --config-file, and
make sure errno does not "leak" from unrelated
functions.
* plugins.d/mandos-client.c
(fprintf_plus, debuggnutls, resolve_callback): Add "nonnull"
attribute.
(incbuffer, add_server, init_gpgme): Add "nonnull" and
"warn_unused_result"
attributes.
(pgp_packet_decrypt, init_gnutls_global): - '' -
(init_gnutls_session start_mandos_communication, get_flags): - '' -
(good_flags, good_interface, interface_is_up): - '' -
(interface_is_running, runnable_hook): - '' -
(avahi_loop_with_timeout, bring_up_interface): : - '' -
(safer_gnutls_strerror): Add "warn_unused_result" attribute.
(notdotentries): Set "nonnull", "pure", and "warn_unused_result"
attributes.
(raise_privileges, raise_privileges_permanently, lower_privileges,
lower_privileges_permanently): Set "warn_unused_result" attribute.
(run_network_hooks): Exit child process if it fails to do anything
it needs to do. Make explicit cast to double
when passing float value to asprintf(). Change
return type to void - all callers changed.
(bring_up_interface): Move variables "sd", "ret_errno", and
"ret_setflags" to innermost scope. Bug fix:
Fail if could not get interface flags also in
non-debug mode, and restore old errno
correctly. Print message if could not raise
(or later lower) privileges.
(take_down_interface): Bug fix: When failing because it could not
get interface flags, restore old errno
correctly. Print message if it could not
raise (or later lower) privileges.
(main): Complain if failed to raise or lower privileges. Only run
network hooks or lower privileges if raising privileges was
successful.
* Makefile (WARN): Update to include almost all warning flags.
* plugin-runner.c (getplugin, add_to_char_array, add_argument,
add_environment, set_cloexec_flag,
print_out_password): Add attribute
"warn_unused_result".
(main/parse_opt): Bug fix: Add error checking to --global-env,
--env-for, --plugin-dir, and --config-file, and
make sure errno does not "leak" from unrelated
functions.
* plugins.d/mandos-client.c
(fprintf_plus, debuggnutls, resolve_callback): Add "nonnull"
attribute.
(incbuffer, add_server, init_gpgme): Add "nonnull" and
"warn_unused_result"
attributes.
(pgp_packet_decrypt, init_gnutls_global): - '' -
(init_gnutls_session start_mandos_communication, get_flags): - '' -
(good_flags, good_interface, interface_is_up): - '' -
(interface_is_running, runnable_hook): - '' -
(avahi_loop_with_timeout, bring_up_interface): : - '' -
(safer_gnutls_strerror): Add "warn_unused_result" attribute.
(notdotentries): Set "nonnull", "pure", and "warn_unused_result"
attributes.
(raise_privileges, raise_privileges_permanently, lower_privileges,
lower_privileges_permanently): Set "warn_unused_result" attribute.
(run_network_hooks): Exit child process if it fails to do anything
it needs to do. Make explicit cast to double
when passing float value to asprintf(). Change
return type to void - all callers changed.
(bring_up_interface): Move variables "sd", "ret_errno", and
"ret_setflags" to innermost scope. Bug fix:
Fail if could not get interface flags also in
non-debug mode, and restore old errno
correctly. Print message if could not raise
(or later lower) privileges.
(take_down_interface): Bug fix: When failing because it could not
get interface flags, restore old errno
correctly. Print message if it could not
raise (or later lower) privileges.
(main): Complain if failed to raise or lower privileges. Only run
network hooks or lower privileges if raising privileges was
successful.
- files modified:
- Makefile
added
removed
plugins.d/mandos-client.c
183
183
perror(print_text);
184
184
}
185
185
186
__attribute__((format (gnu_printf, 2, 3)))
186
__attribute__((format (gnu_printf, 2, 3), nonnull))
187
187
int fprintf_plus(FILE *stream, const char *format, ...){
188
188
va_list ap;
189
189
va_start (ap, format);
198
198
* bytes. "buffer_capacity" is how much is currently allocated,
199
199
* "buffer_length" is how much is already used.
200
200
*/
201
__attribute__((nonnull, warn_unused_result))
201
202
size_t incbuffer(char **buffer, size_t buffer_length,
202
203
size_t buffer_capacity){
203
204
if(buffer_length + BUFFER_SIZE > buffer_capacity){
216
217
}
217
218
218
219
/* Add server to set of servers to retry periodically */
220
__attribute__((nonnull, warn_unused_result))
219
221
bool add_server(const char *ip, in_port_t port, AvahiIfIndex if_index,
220
222
int af, server **current_server){
221
223
int ret;
242
244
new_server->next = new_server;
243
245
new_server->prev = new_server;
244
246
*current_server = new_server;
245
/* Place the new server last in the list */
246
247
} else {
248
/* Place the new server last in the list */
247
249
new_server->next = *current_server;
248
250
new_server->prev = (*current_server)->prev;
249
251
new_server->prev->next = new_server;
255
257
/*
256
258
* Initialize GPGME.
257
259
*/
260
__attribute__((nonnull, warn_unused_result))
258
261
static bool init_gpgme(const char *seckey, const char *pubkey,
259
262
const char *tempdir, mandos_context *mc){
260
263
gpgme_error_t rc;
350
353
* Decrypt OpenPGP data.
351
354
* Returns -1 on error
352
355
*/
356
__attribute__((nonnull, warn_unused_result))
353
357
static ssize_t pgp_packet_decrypt(const char *cryptotext,
354
358
size_t crypto_size,
355
359
char **plaintext,
475
479
return plaintext_length;
476
480
}
477
481
478
static const char * safer_gnutls_strerror(int value){
482
__attribute__((warn_unused_result))
483
static const char *safer_gnutls_strerror(int value){
479
484
const char *ret = gnutls_strerror(value);
480
485
if(ret == NULL)
481
486
ret = "(unknown)";
483
488
}
484
489
485
490
/* GnuTLS log function callback */
491
__attribute__((nonnull))
486
492
static void debuggnutls(__attribute__((unused)) int level,
487
493
const char* string){
488
494
fprintf_plus(stderr, "GnuTLS: %s", string);
489
495
}
490
496
497
__attribute__((nonnull, warn_unused_result))
491
498
static int init_gnutls_global(const char *pubkeyfilename,
492
499
const char *seckeyfilename,
493
500
mandos_context *mc){
567
574
return -1;
568
575
}
569
576
577
__attribute__((nonnull, warn_unused_result))
570
578
static int init_gnutls_session(gnutls_session_t *session,
571
579
mandos_context *mc){
572
580
int ret;
629
637
__attribute__((unused)) const char *txt){}
630
638
631
639
/* Called when a Mandos server is found */
640
__attribute__((nonnull, warn_unused_result))
632
641
static int start_mandos_communication(const char *ip, in_port_t port,
633
642
AvahiIfIndex if_index,
634
643
int af, mandos_context *mc){
740
749
goto mandos_end;
741
750
}
742
751
if(af == AF_INET6){
743
((struct sockaddr_in6 *)&to)->sin6_port = htons(port);
752
((struct sockaddr_in6 *)&to)->sin6_port = htons(port);
744
753
if(IN6_IS_ADDR_LINKLOCAL
745
754
(&((struct sockaddr_in6 *)&to)->sin6_addr)){
746
755
if(if_index == AVAHI_IF_UNSPEC){
1030
1039
return retval;
1031
1040
}
1032
1041
1042
__attribute__((nonnull))
1033
1043
static void resolve_callback(AvahiSServiceResolver *r,
1034
1044
AvahiIfIndex interface,
1035
1045
AvahiProtocol proto,
1043
1053
AVAHI_GCC_UNUSED AvahiStringList *txt,
1044
1054
AVAHI_GCC_UNUSED AvahiLookupResultFlags
1045
1055
flags,
1046
void* mc){
1056
void *mc){
1047
1057
if(r == NULL){
1048
1058
return;
1049
1059
}
1102
1112
const char *domain,
1103
1113
AVAHI_GCC_UNUSED AvahiLookupResultFlags
1104
1114
flags,
1105
void* mc){
1115
void *mc){
1106
1116
if(b == NULL){
1107
1117
return;
1108
1118
}
1168
1178
errno = old_errno;
1169
1179
}
1170
1180
1181
__attribute__((nonnull, warn_unused_result))
1171
1182
bool get_flags(const char *ifname, struct ifreq *ifr){
1172
1183
int ret;
1173
1184
error_t ret_errno;
1192
1203
return true;
1193
1204
}
1194
1205
1206
__attribute__((nonnull, warn_unused_result))
1195
1207
bool good_flags(const char *ifname, const struct ifreq *ifr){
1196
1208
1197
1209
/* Reject the loopback device */
1239
1251
* corresponds to an acceptable network device.
1240
1252
* (This function is passed to scandir(3) as a filter function.)
1241
1253
*/
1254
__attribute__((nonnull, warn_unused_result))
1242
1255
int good_interface(const struct dirent *if_entry){
1243
1256
if(if_entry->d_name[0] == '.'){
1244
1257
return 0;
1262
1275
/*
1263
1276
* This function determines if a network interface is up.
1264
1277
*/
1278
__attribute__((nonnull, warn_unused_result))
1265
1279
bool interface_is_up(const char *interface){
1266
1280
struct ifreq ifr;
1267
1281
if(not get_flags(interface, &ifr)){
1278
1292
/*
1279
1293
* This function determines if a network interface is running
1280
1294
*/
1295
__attribute__((nonnull, warn_unused_result))
1281
1296
bool interface_is_running(const char *interface){
1282
1297
struct ifreq ifr;
1283
1298
if(not get_flags(interface, &ifr)){
1291
1306
return (bool)(ifr.ifr_flags & IFF_RUNNING);
1292
1307
}
1293
1308
1309
__attribute__((nonnull, pure, warn_unused_result))
1294
1310
int notdotentries(const struct dirent *direntry){
1295
1311
/* Skip "." and ".." */
1296
1312
if(direntry->d_name[0] == '.'
1303
1319
}
1304
1320
1305
1321
/* Is this directory entry a runnable program? */
1322
__attribute__((nonnull, warn_unused_result))
1306
1323
int runnable_hook(const struct dirent *direntry){
1307
1324
int ret;
1308
1325
size_t sret;
1363
1380
return 1;
1364
1381
}
1365
1382
1383
__attribute__((nonnull, warn_unused_result))
1366
1384
int avahi_loop_with_timeout(AvahiSimplePoll *s, int retry_interval,
1367
1385
mandos_context *mc){
1368
1386
int ret;
1437
1455
}
1438
1456
1439
1457
/* Set effective uid to 0, return errno */
1458
__attribute__((warn_unused_result))
1440
1459
error_t raise_privileges(void){
1441
1460
error_t old_errno = errno;
1442
1461
error_t ret_errno = 0;
1449
1468
}
1450
1469
1451
1470
/* Set effective and real user ID to 0. Return errno. */
1471
__attribute__((warn_unused_result))
1452
1472
error_t raise_privileges_permanently(void){
1453
1473
error_t old_errno = errno;
1454
1474
error_t ret_errno = raise_privileges();
1465
1485
}
1466
1486
1467
1487
/* Set effective user ID to unprivileged saved user ID */
1488
__attribute__((warn_unused_result))
1468
1489
error_t lower_privileges(void){
1469
1490
error_t old_errno = errno;
1470
1491
error_t ret_errno = 0;
1477
1498
}
1478
1499
1479
1500
/* Lower privileges permanently */
1501
__attribute__((warn_unused_result))
1480
1502
error_t lower_privileges_permanently(void){
1481
1503
error_t old_errno = errno;
1482
1504
error_t ret_errno = 0;
1488
1510
return ret_errno;
1489
1511
}
1490
1512
1491
bool run_network_hooks(const char *mode, const char *interface,
1513
__attribute__((nonnull))
1514
void run_network_hooks(const char *mode, const char *interface,
1492
1515
const float delay){
1493
1516
struct dirent **direntries;
1494
1517
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1522
1545
if(hook_pid == 0){
1523
1546
/* Child */
1524
1547
/* Raise privileges */
1525
raise_privileges_permanently();
1548
if(raise_privileges_permanently() != 0){
1549
perror_plus("Failed to raise privileges");
1550
_exit(EX_NOPERM);
1551
}
1526
1552
/* Set group */
1527
1553
errno = 0;
1528
1554
ret = setgid(0);
1529
1555
if(ret == -1){
1530
1556
perror_plus("setgid");
1557
_exit(EX_NOPERM);
1531
1558
}
1532
1559
/* Reset supplementary groups */
1533
1560
errno = 0;
1534
1561
ret = setgroups(0, NULL);
1535
1562
if(ret == -1){
1536
1563
perror_plus("setgroups");
1537
}
1538
dup2(devnull, STDIN_FILENO);
1539
close(devnull);
1540
dup2(STDERR_FILENO, STDOUT_FILENO);
1564
_exit(EX_NOPERM);
1565
}
1566
ret = dup2(devnull, STDIN_FILENO);
1567
if(ret == -1){
1568
perror_plus("dup2(devnull, STDIN_FILENO)");
1569
_exit(EX_OSERR);
1570
}
1571
ret = close(devnull);
1572
if(ret == -1){
1573
perror_plus("close");
1574
_exit(EX_OSERR);
1575
}
1576
ret = dup2(STDERR_FILENO, STDOUT_FILENO);
1577
if(ret == -1){
1578
perror_plus("dup2(STDERR_FILENO, STDOUT_FILENO)");
1579
_exit(EX_OSERR);
1580
}
1541
1581
ret = setenv("MANDOSNETHOOKDIR", hookdir, 1);
1542
1582
if(ret == -1){
1543
1583
perror_plus("setenv");
1559
1599
_exit(EX_OSERR);
1560
1600
}
1561
1601
char *delaystring;
1562
ret = asprintf(&delaystring, "%f", delay);
1602
ret = asprintf(&delaystring, "%f", (double)delay);
1563
1603
if(ret == -1){
1564
1604
perror_plus("asprintf");
1565
1605
_exit(EX_OSERR);
1618
1658
}
1619
1659
close(devnull);
1620
1660
}
1621
return true;
1622
1661
}
1623
1662
1663
__attribute__((nonnull, warn_unused_result))
1624
1664
error_t bring_up_interface(const char *const interface,
1625
1665
const float delay){
1626
int sd = -1;
1627
1666
error_t old_errno = errno;
1628
error_t ret_errno = 0;
1629
int ret, ret_setflags;
1667
int ret;
1630
1668
struct ifreq network;
1631
1669
unsigned int if_index = if_nametoindex(interface);
1632
1670
if(if_index == 0){
1641
1679
}
1642
1680
1643
1681
if(not interface_is_up(interface)){
1644
if(not get_flags(interface, &network) and debug){
1682
error_t ret_errno = 0, ioctl_errno = 0;
1683
if(not get_flags(interface, &network)){
1645
1684
ret_errno = errno;
1646
1685
fprintf_plus(stderr, "Failed to get flags for interface "
1647
1686
"\"%s\"\n", interface);
1687
errno = old_errno;
1648
1688
return ret_errno;
1649
1689
}
1650
network.ifr_flags |= IFF_UP;
1690
network.ifr_flags |= IFF_UP; /* set flag */
1651
1691
1652
sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1653
if(sd < 0){
1692
int sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1693
if(sd == -1){
1654
1694
ret_errno = errno;
1655
1695
perror_plus("socket");
1656
1696
errno = old_errno;
1657
1697
return ret_errno;
1658
1698
}
1659
1699
1660
1700
if(quit_now){
1661
close(sd);
1701
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1702
if(ret == -1){
1703
perror_plus("close");
1704
}
1662
1705
errno = old_errno;
1663
1706
return EINTR;
1664
1707
}
1668
1711
interface);
1669
1712
}
1670
1713
1671
/* Raise priviliges */
1672
raise_privileges();
1673
1714
/* Raise privileges */
1715
ret_errno = raise_privileges();
1716
bool restore_loglevel = false;
1717
if(ret_errno != 0){
1718
perror_plus("Failed to raise privileges");
1719
}
1674
1720
#ifdef __linux__
1675
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1676
messages about the network interface to mess up the prompt */
1677
int ret_linux = klogctl(8, NULL, 5);
1678
bool restore_loglevel = true;
1679
if(ret_linux == -1){
1680
restore_loglevel = false;
1681
perror_plus("klogctl");
1721
int ret_linux;
1722
if(ret_errno == 0){
1723
/* Lower kernel loglevel to KERN_NOTICE to avoid KERN_INFO
1724
messages about the network interface to mess up the prompt */
1725
ret_linux = klogctl(8, NULL, 5);
1726
if(ret_linux == -1){
1727
perror_plus("klogctl");
1728
} else {
1729
restore_loglevel = true;
1730
}
1682
1731
}
1683
1732
#endif /* __linux__ */
1684
ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
1685
ret_errno = errno;
1733
int ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
1734
ioctl_errno = errno;
1686
1735
#ifdef __linux__
1687
1736
if(restore_loglevel){
1688
1737
ret_linux = klogctl(7, NULL, 0);
1692
1741
}
1693
1742
#endif /* __linux__ */
1694
1743
1695
/* Lower privileges */
1696
lower_privileges();
1744
/* If raise_privileges() succeeded above */
1745
if(ret_errno == 0){
1746
/* Lower privileges */
1747
ret_errno = lower_privileges();
1748
if(ret_errno != 0){
1749
errno = ret_errno;
1750
perror_plus("Failed to lower privileges");
1751
}
1752
}
1697
1753
1698
1754
/* Close the socket */
1699
1755
ret = (int)TEMP_FAILURE_RETRY(close(sd));
1702
1758
}
1703
1759
1704
1760
if(ret_setflags == -1){
1705
errno = ret_errno;
1761
errno = ioctl_errno;
1706
1762
perror_plus("ioctl SIOCSIFFLAGS +IFF_UP");
1707
1763
errno = old_errno;
1708
return ret_errno;
1764
return ioctl_errno;
1709
1765
}
1710
1766
} else if(debug){
1711
1767
fprintf_plus(stderr, "Interface \"%s\" is already up; good\n",
1729
1785
return 0;
1730
1786
}
1731
1787
1788
__attribute__((nonnull, warn_unused_result))
1732
1789
error_t take_down_interface(const char *const interface){
1733
1790
error_t old_errno = errno;
1734
1791
struct ifreq network;
1739
1796
return ENXIO;
1740
1797
}
1741
1798
if(interface_is_up(interface)){
1742
error_t ret_errno = 0;
1799
error_t ret_errno = 0, ioctl_errno = 0;
1743
1800
if(not get_flags(interface, &network) and debug){
1744
1801
ret_errno = errno;
1745
1802
fprintf_plus(stderr, "Failed to get flags for interface "
1746
1803
"\"%s\"\n", interface);
1804
errno = old_errno;
1747
1805
return ret_errno;
1748
1806
}
1749
1807
network.ifr_flags &= ~(short)IFF_UP; /* clear flag */
1750
1808
1751
1809
int sd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1752
if(sd < 0){
1810
if(sd == -1){
1753
1811
ret_errno = errno;
1754
1812
perror_plus("socket");
1755
1813
errno = old_errno;
1761
1819
interface);
1762
1820
}
1763
1821
1764
/* Raise priviliges */
1765
raise_privileges();
1766
1822
/* Raise privileges */
1823
ret_errno = raise_privileges();
1824
if(ret_errno != 0){
1825
perror_plus("Failed to raise privileges");
1826
}
1767
1827
int ret_setflags = ioctl(sd, SIOCSIFFLAGS, &network);
1768
ret_errno = errno;
1828
ioctl_errno = errno;
1769
1829
1770
/* Lower privileges */
1771
lower_privileges();
1830
/* If raise_privileges() succeeded above */
1831
if(ret_errno == 0){
1832
/* Lower privileges */
1833
ret_errno = lower_privileges();
1834
if(ret_errno != 0){
1835
errno = ret_errno;
1836
perror_plus("Failed to lower privileges");
1837
}
1838
}
1772
1839
1773
1840
/* Close the socket */
1774
1841
int ret = (int)TEMP_FAILURE_RETRY(close(sd));
1777
1844
}
1778
1845
1779
1846
if(ret_setflags == -1){
1780
errno = ret_errno;
1847
errno = ioctl_errno;
1781
1848
perror_plus("ioctl SIOCSIFFLAGS -IFF_UP");
1782
1849
errno = old_errno;
1783
return ret_errno;
1850
return ioctl_errno;
1784
1851
}
1785
1852
} else if(debug){
1786
1853
fprintf_plus(stderr, "Interface \"%s\" is already down; odd\n",
1794
1861
int main(int argc, char *argv[]){
1795
1862
mandos_context mc = { .server = NULL, .dh_bits = 1024,
1796
1863
.priority = "SECURE256:!CTYPE-X.509:"
1797
"+CTYPE-OPENPGP", .current_server = NULL,
1864
"+CTYPE-OPENPGP", .current_server = NULL,
1798
1865
.interfaces = NULL, .interfaces_size = 0 };
1799
1866
AvahiSServiceBrowser *sb = NULL;
1800
1867
error_t ret_errno;
1993
2060
/* Work around Debian bug #633582:
1994
2061
<http://bugs.debian.org/633582> */
1995
2062
1996
/* Re-raise priviliges */
1997
if(raise_privileges() == 0){
2063
/* Re-raise privileges */
2064
ret_errno = raise_privileges();
2065
if(ret_errno != 0){
2066
errno = ret_errno;
2067
perror_plus("Failed to raise privileges");
2068
} else {
1998
2069
struct stat st;
1999
2070
2000
2071
if(strcmp(seckey, PATHDIR "/" SECKEY) == 0){
2040
2111
}
2041
2112
2042
2113
/* Lower privileges */
2043
lower_privileges();
2114
ret_errno = lower_privileges();
2115
if(ret_errno != 0){
2116
errno = ret_errno;
2117
perror_plus("Failed to lower privileges");
2118
}
2044
2119
}
2045
2120
}
2046
2121
2072
2147
memcpy(interfaces_hooks, mc.interfaces, mc.interfaces_size);
2073
2148
argz_stringify(interfaces_hooks, mc.interfaces_size, (int)',');
2074
2149
}
2075
if(not run_network_hooks("start", interfaces_hooks != NULL ?
2076
interfaces_hooks : "", delay)){
2077
goto end;
2078
}
2150
run_network_hooks("start", interfaces_hooks != NULL ?
2151
interfaces_hooks : "", delay);
2079
2152
}
2080
2153
2081
2154
if(not debug){
2209
2282
break;
2210
2283
}
2211
2284
bool interface_was_up = interface_is_up(interface);
2212
ret = bring_up_interface(interface, delay);
2285
errno = bring_up_interface(interface, delay);
2213
2286
if(not interface_was_up){
2214
if(ret != 0){
2215
errno = ret;
2287
if(errno != 0){
2216
2288
perror_plus("Failed to bring up interface");
2217
2289
} else {
2218
ret_errno = argz_add(&interfaces_to_take_down,
2219
&interfaces_to_take_down_size,
2220
interface);
2221
if(ret_errno != 0){
2222
errno = ret_errno;
2290
errno = argz_add(&interfaces_to_take_down,
2291
&interfaces_to_take_down_size,
2292
interface);
2293
if(errno != 0){
2223
2294
perror_plus("argz_add");
2224
2295
}
2225
2296
}
2449
2520
}
2450
2521
}
2451
2522
2452
/* Re-raise priviliges */
2523
/* Re-raise privileges */
2453
2524
{
2454
raise_privileges();
2455
2456
/* Run network hooks */
2457
run_network_hooks("stop", interfaces_hooks != NULL ?
2458
interfaces_hooks : "", delay);
2459
2460
/* Take down the network interfaces which were brought up */
2461
{
2462
char *interface = NULL;
2463
while((interface=argz_next(interfaces_to_take_down,
2464
interfaces_to_take_down_size,
2465
interface))){
2466
ret_errno = take_down_interface(interface);
2467
if(ret_errno != 0){
2468
errno = ret_errno;
2469
perror_plus("Failed to take down interface");
2470
}
2471
}
2472
if(debug and (interfaces_to_take_down == NULL)){
2473
fprintf_plus(stderr, "No interfaces needed to be taken"
2474
" down\n");
2475
}
2476
}
2477
2478
lower_privileges_permanently();
2525
ret_errno = raise_privileges();
2526
if(ret_errno != 0){
2527
perror_plus("Failed to raise privileges");
2528
} else {
2529
2530
/* Run network hooks */
2531
run_network_hooks("stop", interfaces_hooks != NULL ?
2532
interfaces_hooks : "", delay);
2533
2534
/* Take down the network interfaces which were brought up */
2535
{
2536
char *interface = NULL;
2537
while((interface=argz_next(interfaces_to_take_down,
2538
interfaces_to_take_down_size,
2539
interface))){
2540
ret_errno = take_down_interface(interface);
2541
if(ret_errno != 0){
2542
errno = ret_errno;
2543
perror_plus("Failed to take down interface");
2544
}
2545
}
2546
if(debug and (interfaces_to_take_down == NULL)){
2547
fprintf_plus(stderr, "No interfaces needed to be taken"
2548
" down\n");
2549
}
2550
}
2551
}
2552
ret_errno = lower_privileges_permanently();
2553
if(ret_errno != 0){
2554
perror_plus("Failed to lower privileges permanently");
2555
}
2479
2556
}
2480
2557
2481
2558
free(interfaces_to_take_down);
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0