87
87
EX_NOHOST, EX_IOERR, EX_PROTOCOL */
88
88
#include <sys/wait.h> /* waitpid(), WIFEXITED(),
89
89
WEXITSTATUS(), WTERMSIG() */
90
#include <grp.h> /* setgroups() */
92
93
#include <sys/klog.h> /* klogctl() */
1406
1407
pid_t hook_pid = fork();
1407
1408
if(hook_pid == 0){
1410
/* Raise privileges */
1414
perror_plus("seteuid");
1416
/* Raise privileges even more */
1420
perror_plus("setuid");
1426
perror_plus("setgid");
1428
/* Reset supplementary groups */
1430
ret = setgroups(0, NULL);
1432
perror_plus("setgroups");
1434
fprintf_plus(stderr, "Child: getuid() = %d\n", getuid());
1435
fprintf_plus(stderr, "Child: geteuid() = %d\n", geteuid());
1409
1436
dup2(devnull, STDIN_FILENO);
1410
1437
close(devnull);
1411
1438
dup2(STDERR_FILENO, STDOUT_FILENO);
1682
1709
/* Work around Debian bug #633582:
1683
1710
<http://bugs.debian.org/633582> */
1686
1712
/* Re-raise priviliges */
1688
1714
ret = seteuid(0);
1690
1716
perror_plus("seteuid");
1693
if(strcmp(seckey, PATHDIR "/" SECKEY) == 0){
1694
int seckey_fd = open(seckey, O_RDONLY);
1695
if(seckey_fd == -1){
1696
perror_plus("open");
1698
ret = (int)TEMP_FAILURE_RETRY(fstat(seckey_fd, &st));
1700
perror_plus("fstat");
1702
if(S_ISREG(st.st_mode)
1703
and st.st_uid == 0 and st.st_gid == 0){
1704
ret = fchown(seckey_fd, uid, gid);
1706
perror_plus("fchown");
1710
TEMP_FAILURE_RETRY(close(seckey_fd));
1714
if(strcmp(pubkey, PATHDIR "/" PUBKEY) == 0){
1715
int pubkey_fd = open(pubkey, O_RDONLY);
1716
if(pubkey_fd == -1){
1717
perror_plus("open");
1719
ret = (int)TEMP_FAILURE_RETRY(fstat(pubkey_fd, &st));
1721
perror_plus("fstat");
1723
if(S_ISREG(st.st_mode)
1724
and st.st_uid == 0 and st.st_gid == 0){
1725
ret = fchown(pubkey_fd, uid, gid);
1727
perror_plus("fchown");
1731
TEMP_FAILURE_RETRY(close(pubkey_fd));
1735
/* Lower privileges */
1739
perror_plus("seteuid");
1743
/* Run network hooks */
1746
/* Re-raise priviliges */
1750
perror_plus("seteuid");
1753
if(not run_network_hooks("start", interface, delay)){
1720
if(strcmp(seckey, PATHDIR "/" SECKEY) == 0){
1721
int seckey_fd = open(seckey, O_RDONLY);
1722
if(seckey_fd == -1){
1723
perror_plus("open");
1725
ret = (int)TEMP_FAILURE_RETRY(fstat(seckey_fd, &st));
1727
perror_plus("fstat");
1729
if(S_ISREG(st.st_mode)
1730
and st.st_uid == 0 and st.st_gid == 0){
1731
ret = fchown(seckey_fd, uid, gid);
1733
perror_plus("fchown");
1737
TEMP_FAILURE_RETRY(close(seckey_fd));
1741
if(strcmp(pubkey, PATHDIR "/" PUBKEY) == 0){
1742
int pubkey_fd = open(pubkey, O_RDONLY);
1743
if(pubkey_fd == -1){
1744
perror_plus("open");
1746
ret = (int)TEMP_FAILURE_RETRY(fstat(pubkey_fd, &st));
1748
perror_plus("fstat");
1750
if(S_ISREG(st.st_mode)
1751
and st.st_uid == 0 and st.st_gid == 0){
1752
ret = fchown(pubkey_fd, uid, gid);
1754
perror_plus("fchown");
1758
TEMP_FAILURE_RETRY(close(pubkey_fd));
1757
1762
/* Lower privileges */
1759
1764
ret = seteuid(uid);
2230
/* Run network hooks */
2231
run_network_hooks("stop", interface, delay);
2220
2233
/* Re-raise priviliges */
2226
perror_plus("seteuid");
2238
perror_plus("seteuid");
2230
/* Run network hooks */
2231
run_network_hooks("stop", interface, delay);
2233
2241
/* Take down the network interface */
2234
2242
if(take_down_interface and geteuid() == 0){
2235
2243
ret = ioctl(sd, SIOCGIFFLAGS, &network);