Gecko [ www.thearyasamaj.org ]

Name	Size	Permission
NetworkManager	3.41 MB	-rwxr-xr-x
a3mnt	832 B	-rwxr-xr-x
aakore	481 B	-rwxr-xr-x
accessdb	12.59 KB	-rwxr-xr-x
accton	13.69 KB	-rwxr-xr-x
acp-update-controller	820 B	-rwxr-xr-x
acrocmd	822 B	-rwxr-xr-x
acronis_encrypt	818 B	-rwxr-xr-x
acronis_mms	1.29 KB	-rwxr-xr-x
acronis_schedinfo	435 B	-rwxr-xr-x
acronis_schedule	818 B	-rwxr-xr-x
acropsh	804 B	-rwxr-xr-x
adcli	171.08 KB	-rwxr-xr-x
addgnupghome	3 KB	-rwxr-xr-x
addpart	24.85 KB	-rwxr-xr-x
adduser	148.13 KB	-rwxr-xr-x
agetty	62.38 KB	-rwxr-xr-x
alternatives	36.62 KB	-rwxr-xr-x
anacron	40.98 KB	-rwxr-xr-x
apachectl	4.19 KB	-rwxr-xr-x
applygnupgdefaults	2.17 KB	-rwxr-xr-x
arp	64.71 KB	-rwxr-xr-x
arpd	87.1 KB	-rwxr-xr-x
arping	28.74 KB	-rwxr-xr-x
atd	32.63 KB	-rwxr-xr-x
atrun	67 B	-rwxr-xr-x
auditctl	45.04 KB	-rwxr-xr-x
auditd	155.78 KB	-rwxr-xr-x
augenrules	3.7 KB	-rwxr-xr-x
aureport	122.34 KB	-rwxr-xr-x
ausearch	130.37 KB	-rwxr-xr-x
autrace	16.53 KB	-rwxr-x---
avcstat	16.39 KB	-rwxr-xr-x
badblocks	32.57 KB	-rwxr-xr-x
biosdecode	25.45 KB	-rwxr-xr-x
biosdevname	46.16 KB	-rwxr-xr-x
blkdeactivate	15.97 KB	-r-xr-xr-x
blkdiscard	29.05 KB	-rwxr-xr-x
blkid	98.66 KB	-rwxr-xr-x
blkzone	49.73 KB	-rwxr-xr-x
blockdev	41.3 KB	-rwxr-xr-x
bpftool	2.77 MB	-rwxr-xr-x
bridge	150.15 KB	-rwxr-xr-x
build-locale-archive	812.27 KB	-rwx------
cache_check	1.43 MB	-rwxr-xr-x
cache_dump	1.43 MB	-rwxr-xr-x
cache_metadata_size	1.43 MB	-rwxr-xr-x
cache_repair	1.43 MB	-rwxr-xr-x
cache_restore	1.43 MB	-rwxr-xr-x
cache_writeback	1.43 MB	-rwxr-xr-x
capsh	32.44 KB	-rwxr-xr-x
cfdisk	98.39 KB	-rwxr-xr-x
chcpu	28.82 KB	-rwxr-xr-x
chgpasswd	69.67 KB	-rwxr-xr-x
chkconfig	45.16 KB	-rwxr-xr-x
chpasswd	61.42 KB	-rwxr-xr-x
chronyd	351.16 KB	-rwxr-xr-x
chroot	41.44 KB	-rwxr-xr-x
clock	65.26 KB	-rwxr-xr-x
clockdiff	20.42 KB	-rwxr-xr-x
consoletype	11.85 KB	-rwxr-xr-x
convertquota	78.68 KB	-rwxr-xr-x
cracklib-check	13.05 KB	-rwxr-xr-x
cracklib-format	251 B	-rwxr-xr-x
cracklib-packer	13.05 KB	-rwxr-xr-x
cracklib-unpacker	9.03 KB	-rwxr-xr-x
create-cracklib-dict	990 B	-rwxr-xr-x
crond	73.94 KB	-rwxr-xr-x
cryptsetup	143.43 KB	-rwxr-xr-x
csf	245.08 KB	-rwx------
ctrlaltdel	20.77 KB	-rwxr-xr-x
ctstat	25.32 KB	-rwxr-xr-x
dcb	146.85 KB	-rwxr-xr-x
ddns-confgen	20.45 KB	-rwxr-xr-x
debugfs	231.63 KB	-rwxr-xr-x
delpart	24.85 KB	-rwxr-xr-x
depmod	159.46 KB	-rwxr-xr-x
devlink	185.22 KB	-rwxr-xr-x
dhclient	453.64 KB	-rwxr-xr-x
dhclient-script	32.86 KB	-rwxr-xr-x
dkms	117.1 KB	-rwxr-xr-x
dmeventd	45.02 KB	-r-xr-xr-x
dmfilemapd	24.53 KB	-r-xr-xr-x
dmidecode	125.68 KB	-rwxr-xr-x
dmsetup	158.63 KB	-r-xr-xr-x
dmstats	158.63 KB	-r-xr-xr-x
dnssec-checkds	936 B	-rwxr-xr-x
dnssec-coverage	938 B	-rwxr-xr-x
dnssec-dsfromkey	60.84 KB	-rwxr-xr-x
dnssec-importkey	60.83 KB	-rwxr-xr-x
dnssec-keyfromlabel	64.74 KB	-rwxr-xr-x
dnssec-keygen	72.83 KB	-rwxr-xr-x
dnssec-keymgr	934 B	-rwxr-xr-x
dnssec-revoke	56.73 KB	-rwxr-xr-x
dnssec-settime	60.83 KB	-rwxr-xr-x
dnssec-signzone	117.19 KB	-rwxr-xr-x
dnssec-verify	52.84 KB	-rwxr-xr-x
dosfsck	65.13 KB	-rwxr-xr-x
dosfslabel	61.1 KB	-rwxr-xr-x
dovecot	93.86 KB	-rwxr-xr-x
dump-acct	29.15 KB	-rwxr-xr-x
dump-utmp	25.02 KB	-rwxr-xr-x
dumpe2fs	32.51 KB	-rwxr-xr-x
e2freefrag	16.41 KB	-rwxr-xr-x
e2fsck	328.51 KB	-rwxr-xr-x
e2image	36.59 KB	-rwxr-xr-x
e2label	110.63 KB	-rwxr-xr-x
e2mmpstatus	32.51 KB	-rwxr-xr-x
e2undo	20.37 KB	-rwxr-xr-x
e4crypt	24.54 KB	-rwxr-xr-x
e4defrag	28.48 KB	-rwxr-xr-x
ebtables	216.6 KB	-rwxr-xr-x
ebtables-restore	216.6 KB	-rwxr-xr-x
ebtables-save	216.6 KB	-rwxr-xr-x
edquota	91.24 KB	-rwxr-xr-x
era_check	1.43 MB	-rwxr-xr-x
era_dump	1.43 MB	-rwxr-xr-x
era_invalidate	1.43 MB	-rwxr-xr-x
era_restore	1.43 MB	-rwxr-xr-x
ether-wake	73.99 KB	-rwxr-xr-x
ethtool	557.79 KB	-rwxr-xr-x
faillock	20.52 KB	-rwxr-xr-x
fatlabel	61.1 KB	-rwxr-xr-x
fcgistarter	12.48 KB	-rwxr-xr-x
fdformat	33.16 KB	-rwxr-xr-x
fdisk	130.9 KB	-rwxr-xr-x
filefrag	16.45 KB	-rwxr-xr-x
findfs	12.36 KB	-rwxr-xr-x
firewalld	6.92 KB	-rwxr-xr-x
fix-info-dir	7.84 KB	-rwxr-xr-x
fixfiles	10.48 KB	-rwxr-xr-x
fsadm	24 KB	-r-xr-xr-x
fsck	53.47 KB	-rwxr-xr-x
fsck.cramfs	41.41 KB	-rwxr-xr-x
fsck.ext2	328.51 KB	-rwxr-xr-x
fsck.ext3	328.51 KB	-rwxr-xr-x
fsck.ext4	328.51 KB	-rwxr-xr-x
fsck.fat	65.13 KB	-rwxr-xr-x
fsck.minix	98.73 KB	-rwxr-xr-x
fsck.msdos	65.13 KB	-rwxr-xr-x
fsck.vfat	65.13 KB	-rwxr-xr-x
fsck.xfs	1.92 KB	-rwxr-xr-x
fsfreeze	16.38 KB	-rwxr-xr-x
fstrim	45.61 KB	-rwxr-xr-x
ftpscrub	17.87 KB	-rwxr-xr-x
ftpshut	12.36 KB	-rwxr-xr-x
fuse2fs	70.38 KB	-rwxr-xr-x
fuser	38.14 KB	-rwxr-xr-x
g13-syshelp	189.71 KB	-rwxr-xr-x
genhomedircon	29.27 KB	-rwxr-xr-x
genhostid	11.85 KB	-rwxr-xr-x
genl	94.95 KB	-rwxr-xr-x
genrandom	12.37 KB	-rwxr-xr-x
getcap	12.34 KB	-rwxr-xr-x
getenforce	7.83 KB	-rwxr-xr-x
getpcaps	12.27 KB	-rwxr-xr-x
getsebool	11.86 KB	-rwxr-xr-x
groupadd	95.34 KB	-rwxr-xr-x
groupdel	91.09 KB	-rwxr-xr-x
groupmems	61.48 KB	-rwxr-xr-x
groupmod	99.37 KB	-rwxr-xr-x
grpck	61.48 KB	-rwxr-xr-x
grpconv	57.26 KB	-rwxr-xr-x
grpunconv	57.24 KB	-rwxr-xr-x
grub2-bios-setup	1.14 MB	-rwxr-xr-x
grub2-get-kernel-settings	2.34 KB	-rwxr-xr-x
grub2-install	1.43 MB	-rwxr-xr-x
grub2-macbless	1.12 MB	-rwxr-xr-x
grub2-mkconfig	8.68 KB	-rwxr-xr-x
grub2-ofpathname	242.19 KB	-rwxr-xr-x
grub2-probe	1.14 MB	-rwxr-xr-x
grub2-reboot	3.99 KB	-rwxr-xr-x
grub2-rpm-sort	279.02 KB	-rwxr-xr-x
grub2-set-bootflag	11.87 KB	-rwsr-xr-x
grub2-set-default	3.45 KB	-rwxr-xr-x
grub2-set-password	3.05 KB	-rwxr-xr-x
grub2-setpassword	3.05 KB	-rwxr-xr-x
grub2-sparc64-setup	1.14 MB	-rwxr-xr-x
grub2-switch-to-blscfg	8.6 KB	-rwxr-xr-x
grubby	260 B	-rwxr-xr-x
gss-server	24.59 KB	-rwxr-xr-x
halt	218.45 KB	-rwxr-xr-x
hardlink	17.09 KB	-rwxr-xr-x
hdparm	131.91 KB	-rwxr-xr-x
htcacheclean	32.63 KB	-rwxr-xr-x
httpd	570.3 KB	-rwxr-xr-x
hwclock	65.26 KB	-rwxr-xr-x
iconvconfig	33.04 KB	-rwxr-xr-x
ifconfig	80.86 KB	-rwxr-xr-x
ifdown	1.07 KB	-rwxr-xr-x
ifenslave	24.94 KB	-rwxr-xr-x
ifstat	91.22 KB	-rwxr-xr-x
iftop	75.42 KB	-rwxr-xr-x
ifup	1.04 KB	-rwxr-xr-x
in.proftpd	1.17 MB	-rwxr-xr-x
init	1.53 MB	-rwxr-xr-x
insmod	159.46 KB	-rwxr-xr-x
install-info	50.23 KB	-rwxr-xr-x
installkernel	323 B	-rwxr-xr-x
intel_sdsi	15.61 KB	-rwxr-xr-x
iotop	511 B	-rwxr-xr-x
ip	664.43 KB	-rwxr-xr-x
ip6tables	216.6 KB	-rwxr-xr-x
ip6tables-restore	216.6 KB	-rwxr-xr-x
ip6tables-restore-translate	216.6 KB	-rwxr-xr-x
ip6tables-save	216.6 KB	-rwxr-xr-x
ip6tables-translate	216.6 KB	-rwxr-xr-x
ipmaddr	21 KB	-rwxr-xr-x
iprconfig	408.03 KB	-rwxr-xr-x
iprdbg	137.57 KB	-rwxr-xr-x
iprdump	129.3 KB	-rwxr-xr-x
iprinit	125.28 KB	-rwxr-xr-x
iprsos	2.18 KB	-rwxr-xr-x
iprupdate	129.3 KB	-rwxr-xr-x
ipset	9.01 KB	-rwxr-xr-x
iptables	216.6 KB	-rwxr-xr-x
iptables-apply	3.43 KB	-rwxr-xr-x
iptables-restore	216.6 KB	-rwxr-xr-x
iptables-restore-translate	216.6 KB	-rwxr-xr-x
iptables-save	216.6 KB	-rwxr-xr-x
iptables-translate	216.6 KB	-rwxr-xr-x
iptstate	92.05 KB	-rwxr-xr-x
iptunnel	25 KB	-rwxr-xr-x
irqbalance	62.22 KB	-rwxr-xr-x
irqbalance-ui	37.22 KB	-rwxr-xr-x
isc-hmac-fixup	11.85 KB	-rwxr-xr-x
jk_check	11.2 KB	-rwxr-xr-x
jk_chrootlaunch	20.77 KB	-rwxr-xr-x
jk_chrootsh	32.73 KB	-rwsr-xr-x
jk_cp	4.12 KB	-rwxr-xr-x
jk_init	9.68 KB	-rwxr-xr-x
jk_jailuser	11.81 KB	-rwxr-xr-x
jk_list	4.93 KB	-rwxr-xr-x
jk_lsh	24.66 KB	-rwxr-xr-x
jk_socketd	29.05 KB	-rwxr-xr-x
jk_update	9.11 KB	-rwxr-xr-x
kexec	194.97 KB	-rwxr-xr-x
kpartx	49.05 KB	-rwxr-xr-x
lchage	16.38 KB	-rwxr-xr-x
ldattach	32.98 KB	-rwxr-xr-x
ldconfig	941.15 KB	-rwxr-xr-x
ledctl	92.25 KB	-rwxr-xr-x
ledmon	96.32 KB	-rwxr-xr-x
lfd	382.43 KB	-rwx------
lgroupadd	12 KB	-rwxr-xr-x
lgroupdel	11.99 KB	-rwxr-xr-x
lgroupmod	19.99 KB	-rwxr-xr-x
lid	16.26 KB	-rwxr-xr-x
lnewusers	19.99 KB	-rwxr-xr-x
lnstat	25.32 KB	-rwxr-xr-x
load_policy	12.27 KB	-rwxr-xr-x
logrotate	93.09 KB	-rwxr-xr-x
logsave	16.4 KB	-rwxr-xr-x
losetup	90.59 KB	-rwxr-xr-x
lpasswd	20.34 KB	-rwxr-xr-x
lshw	966.2 KB	-rwxr-xr-x
lsmod	159.46 KB	-rwxr-xr-x
lspci	94.78 KB	-rwxr-xr-x
luseradd	19.99 KB	-rwxr-xr-x
luserdel	16 KB	-rwxr-xr-x
lusermod	20 KB	-rwxr-xr-x
lvchange	2.6 MB	-r-xr-xr-x
lvconvert	2.6 MB	-r-xr-xr-x
lvcreate	2.6 MB	-r-xr-xr-x
lvdisplay	2.6 MB	-r-xr-xr-x
lvextend	2.6 MB	-r-xr-xr-x
lvm	2.6 MB	-r-xr-xr-x
lvm_import_vdo	13.14 KB	-r-xr-xr-x
lvmconfig	2.6 MB	-r-xr-xr-x
lvmdevices	2.6 MB	-r-xr-xr-x
lvmdiskscan	2.6 MB	-r-xr-xr-x
lvmdump	10.12 KB	-r-xr-xr-x
lvmpolld	200.66 KB	-r-xr-xr-x
lvmsadc	2.6 MB	-r-xr-xr-x
lvmsar	2.6 MB	-r-xr-xr-x
lvreduce	2.6 MB	-r-xr-xr-x
lvremove	2.6 MB	-r-xr-xr-x
lvrename	2.6 MB	-r-xr-xr-x
lvresize	2.6 MB	-r-xr-xr-x
lvs	2.6 MB	-r-xr-xr-x
lvscan	2.6 MB	-r-xr-xr-x
lwresd	840.73 KB	-rwxr-xr-x
makedumpfile	425.19 KB	-rwxr-xr-x
matchpathcon	12.36 KB	-rwxr-xr-x
mcelog	181.47 KB	-rwxr-xr-x
mdadm	611.59 KB	-rwxr-xr-x
mdmon	341.71 KB	-rwxr-xr-x
mediabuilder	826 B	-rwxr-xr-x
mii-diag	25.4 KB	-rwxr-xr-x
mii-tool	21.03 KB	-rwxr-xr-x
milter-greylist	336.08 KB	-rwxr-xr-x
mkdict	251 B	-rwxr-xr-x
mkdosfs	39.07 KB	-rwxr-xr-x
mkdumprd	12.54 KB	-rwxr-xr-x
mke2fs	138.45 KB	-rwxr-xr-x
mkfadumprd	2.23 KB	-rwxr-xr-x
mkfs	16.47 KB	-rwxr-xr-x
mkfs.cramfs	41.26 KB	-rwxr-xr-x
mkfs.ext2	138.45 KB	-rwxr-xr-x
mkfs.ext3	138.45 KB	-rwxr-xr-x
mkfs.ext4	138.45 KB	-rwxr-xr-x
mkfs.fat	39.07 KB	-rwxr-xr-x
mkfs.minix	86.54 KB	-rwxr-xr-x
mkfs.msdos	39.07 KB	-rwxr-xr-x
mkfs.vfat	39.07 KB	-rwxr-xr-x
mkfs.xfs	474.59 KB	-rwxr-xr-x
mkhomedir_helper	24.42 KB	-rwxr-xr-x
mklost+found	11.85 KB	-rwxr-xr-x
mksquashfs	186.84 KB	-rwxr-xr-x
mkswap	86.46 KB	-rwxr-xr-x
modinfo	159.46 KB	-rwxr-xr-x
modprobe	159.46 KB	-rwxr-xr-x
mtr	110.92 KB	-rwxr-xr-x
mtr-packet	58.3 KB	-rwxr-xr-x
mysqld	62.52 MB	-rwxr-xr-x
named	840.73 KB	-rwxr-xr-x
named-checkconf	36.77 KB	-rwxr-xr-x
named-checkzone	36.63 KB	-rwxr-xr-x
named-compilezone	36.63 KB	-rwxr-xr-x
named-journalprint	11.84 KB	-rwxr-xr-x
nameif	16.98 KB	-rwxr-xr-x
newusers	107.21 KB	-rwxr-xr-x
nft	20.4 KB	-rwxr-xr-x
nologin	11.87 KB	-rwxr-xr-x
nsec3hash	12.28 KB	-rwxr-xr-x
nstat	87.14 KB	-rwxr-xr-x
opendkim	222.52 KB	-rwxr-xr-x
opendkim-default-keygen	1.4 KB	-rwxr-xr-x
opendkim-reportstats	14.16 KB	-rwxr-xr-x
ownership	16.43 KB	-rwxr-xr-x
packer	13.05 KB	-rwxr-xr-x
pam_console_apply	45.18 KB	-rwxr-xr-x
pam_timestamp_check	11.86 KB	-rwsr-xr-x
paperconfig	4.07 KB	-rwxr-xr-x
parted	85.6 KB	-rwxr-xr-x
partprobe	16.39 KB	-rwxr-xr-x
partx	94.48 KB	-rwxr-xr-x
pdata_tools	1.43 MB	-rwxr-xr-x
php-fpm	4.8 MB	-rwxr-xr-x
pidof	16.55 KB	-rwxr-xr-x
ping	66.08 KB	-rwxr-xr-x
ping6	66.08 KB	-rwxr-xr-x
pivot_root	12.37 KB	-rwxr-xr-x
plipconfig	12.71 KB	-rwxr-xr-x
pluginviewer	20.57 KB	-rwxr-xr-x
postalias	20.39 KB	-rwxr-xr-x
postcat	20.06 KB	-rwxr-xr-x
postconf	191.06 KB	-rwxr-xr-x
postdrop	20.42 KB	-rwxr-sr-x
postfix	16.27 KB	-rwxr-xr-x
postgrey	37.94 KB	-rwxr-xr-x
postgreyreport	23.8 KB	-rwxr-xr-x
postkick	11.97 KB	-rwxr-xr-x
postlock	12.26 KB	-rwxr-xr-x
postlog	12.14 KB	-rwxr-xr-x
postmap	24.41 KB	-rwxr-xr-x
postmulti	28.91 KB	-rwxr-xr-x
postqueue	24.59 KB	-rwxr-sr-x
postsuper	28.81 KB	-rwxr-xr-x
posttls-finger	44.79 KB	-rwxr-xr-x
poweroff	218.45 KB	-rwxr-xr-x
proftpd	1.17 MB	-rwxr-xr-x
pvchange	2.6 MB	-r-xr-xr-x
pvck	2.6 MB	-r-xr-xr-x
pvcreate	2.6 MB	-r-xr-xr-x
pvdisplay	2.6 MB	-r-xr-xr-x
pvmove	2.6 MB	-r-xr-xr-x
pvremove	2.6 MB	-r-xr-xr-x
pvresize	2.6 MB	-r-xr-xr-x
pvs	2.6 MB	-r-xr-xr-x
pvscan	2.6 MB	-r-xr-xr-x
pwck	57.26 KB	-rwxr-xr-x
pwconv	53.09 KB	-rwxr-xr-x
pwhistory_helper	20.42 KB	-rwxr-xr-x
pwunconv	53.12 KB	-rwxr-xr-x
quot	78.67 KB	-rwxr-xr-x
quotacheck	115.75 KB	-rwxr-xr-x
quotaoff	83.16 KB	-rwxr-xr-x
quotaon	83.16 KB	-rwxr-xr-x
quotastats	16.54 KB	-rwxr-xr-x
raid-check	3.7 KB	-rwxr-xr-x
rdisc	24.55 KB	-rwxr-xr-x
rdma	160.91 KB	-rwxr-xr-x
rdma-ndd	15.95 KB	-rwxr-xr-x
readprofile	20.54 KB	-rwxr-xr-x
realm	144.32 KB	-rwxr-xr-x
reboot	218.45 KB	-rwxr-xr-x
repquota	83.24 KB	-rwxr-xr-x
resize2fs	64.9 KB	-rwxr-xr-x
resizepart	41.56 KB	-rwxr-xr-x
resolvconf	195.74 KB	-rwxr-xr-x
restorecon	20.52 KB	-rwxr-xr-x
restorecon_xattr	16.41 KB	-rwxr-xr-x
rfkill	53.48 KB	-rwxr-xr-x
rmmod	159.46 KB	-rwxr-xr-x
rndc	36.52 KB	-rwxr-xr-x
rndc-confgen	20.44 KB	-rwxr-xr-x
rngd	104.84 KB	-rwxr-xr-x
rotatelogs	24.54 KB	-rwxr-xr-x
route	67.63 KB	-rwxr-xr-x
rsyslogd	724.33 KB	-rwxr-xr-x
rtacct	46.93 KB	-rwxr-xr-x
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Code Editor : dhclient-script

#!/bin/bash
#
# dhclient-script: Network interface configuration script run by
#                  dhclient based on DHCP client communication
#
# Copyright (C) 2008-2014  Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# Author(s): David Cantrell <dcantrell@redhat.com>
#            Jiri Popelka <jpopelka@redhat.com>
#
# ----------
# This script is a rewrite/reworking on dhclient-script originally
# included as part of dhcp-970306:
# dhclient-script for Linux. Dan Halbert, March, 1997.
# Updated for Linux 2.[12] by Brian J. Murrell, January 1999.
# Modified by David Cantrell <dcantrell@redhat.com> for Fedora and RHEL
# ----------
#

PATH=/bin:/usr/bin:/sbin
# scripts in dhclient.d/ use $SAVEDIR (#833054)
export SAVEDIR=/var/lib/dhclient

LOGFACILITY="local7"
LOGLEVEL="notice"

ETCDIR="/etc/dhcp"

RESOLVCONF="/etc/resolv.conf"

logmessage() {
    msg="${1}"
    logger -p "${LOGFACILITY}.${LOGLEVEL}" -t "NET" "dhclient: ${msg}"
}

eventually_add_hostnames_domain_to_search() {
# For the case when hostname for this machine has a domain that is not in domain_search list
# 1) get a hostname with `ipcalc --hostname` or `hostnamectl --transient`
# 2) get the domain from this hostname
# 3) add this domain to search line in resolv.conf if it's not already
#    there (domain list that we have recently added there is a parameter of this function)
# We can't do this directly when generating resolv.conf in make_resolv_conf(), because
# we need to first save the resolv.conf with obtained values before we can call `ipcalc --hostname`.
# See bug 637763
    search="${1}"
    if need_hostname; then
        status=1
        OLD_HOSTNAME=$HOSTNAME
        if [ -n "${new_ip_address}" ]; then
            eval $(/usr/bin/ipcalc --silent --hostname "${new_ip_address}" ; echo "status=$?")
        elif [ -n "${new_ip6_address}" ]; then
            eval $(/usr/bin/ipcalc --silent --hostname "${new_ip6_address}" ; echo "status=$?")
        fi

if [ ${status} -eq 0 ]; then
            domain=$(echo "${HOSTNAME}" | cut -s -d "." -f 2-)
        fi
        HOSTNAME=$OLD_HOSTNAME
    else
          domain=$(hostnamectl --transient 2>/dev/null | cut -s -d "." -f 2-)
    fi

if [ -n "${domain}" ] &&
       [ ! "${domain}" = "localdomain" ] &&
       [ ! "${domain}" = "localdomain6" ] &&
       [ ! "${domain}" = "(none)" ] &&
       [[ ! "${domain}" = *\ * ]]; then
       is_in="false"
       for s in ${search}; do
           if [ "${s}" = "${domain}" ] ||
              [ "${s}" = "${domain}." ]; then
              is_in="true"
           fi
       done

if [ "${is_in}" = "false" ]; then
           # Add domain name to search list (#637763)
          sed -i -e "s/${search}/${search} ${domain}/" "${RESOLVCONF}"
       fi
    fi
}

make_resolv_conf() {
    [ "${PEERDNS}" = "no" ] && return

if [ "${reason}" = "RENEW" ] &&
       [ "${new_domain_name}" = "${old_domain_name}" ] &&
       [ "${new_domain_name_servers}" = "${old_domain_name_servers}" ]; then
        return
    fi

if [ -n "${new_domain_name}" ] ||
       [ -n "${new_domain_name_servers}" ] ||
       [ -n "${new_domain_search}" ]; then
        rscf="$(mktemp "${TMPDIR:-/tmp}/XXXXXX")"
        [[ -z "${rscf}" ]] && return
        echo "; generated by /usr/sbin/dhclient-script" > "${rscf}"

if [ -n "${SEARCH}" ]; then
            search="${SEARCH}"
        else
            if [ -n "${new_domain_search}" ]; then
                # Remove instaces of \032 (#450042)
                search="${new_domain_search//\\032/ }"
            elif [ -n "${new_domain_name}" ]; then
                # Note that the DHCP 'Domain Name Option' is really just a domain
                # name, and that this practice of using the domain name option as
                # a search path is both nonstandard and deprecated.
                search="${new_domain_name}"
            fi
        fi

if [ -n "${search}" ]; then
            echo "search ${search}" >> "${rscf}"
        fi

if [ -n "${RES_OPTIONS}" ]; then
            echo "options ${RES_OPTIONS}" >> "${rscf}"
        fi

if [ -n "${new_domain_name_servers}" ]; then
            for nameserver in ${new_domain_name_servers} ; do
                echo "nameserver ${nameserver}" >> "${rscf}"
            done
        else # keep 'old' nameservers
            sed -n /^\w*[Nn][Aa][Mm][Ee][Ss][Ee][Rr][Vv][Ee][Rr]/p "${RESOLVCONF}" >> "${rscf}"
        fi

change_resolv_conf "${rscf}"
        rm -f "${rscf}"

if [ -n "${search}" ]; then
            eventually_add_hostnames_domain_to_search "${search}"
        fi
    elif [ -n "${new_dhcp6_name_servers}" ] ||
         [ -n "${new_dhcp6_domain_search}" ]; then
        rscf="$(mktemp "${TMPDIR:-/tmp}/XXXXXX")"
        [[ -z "${rscf}" ]] && return
        echo "; generated by /usr/sbin/dhclient-script" > "${rscf}"

if [ -n "${SEARCH}" ]; then
            search="${SEARCH}"
        else
            if [ -n "${new_dhcp6_domain_search}" ]; then
                search="${new_dhcp6_domain_search//\\032/ }"
            fi
        fi

if [ -n "${search}" ]; then
            echo "search ${search}" >> "${rscf}"
        fi

if [ -n "${RES_OPTIONS}" ]; then
            echo "options ${RES_OPTIONS}" >> "${rscf}"
        fi

shopt -s nocasematch
        if [ -n "${new_dhcp6_name_servers}" ]; then
            for nameserver in ${new_dhcp6_name_servers} ; do
                # If the nameserver has a link-local address
                # add a <zone_id> (interface name) to it.
                if  [[ "$nameserver" =~ ^fe80:: ]]
                then
                    zone_id="%${interface}"
                else
                    zone_id=
                fi
                echo "nameserver ${nameserver}$zone_id" >> "${rscf}"
            done
        else # keep 'old' nameservers
            sed -n /^\w*[Nn][Aa][Mm][Ee][Ss][Ee][Rr][Vv][Ee][Rr]/p "${RESOLVCONF}" >> "${rscf}"
        fi
        shopt -u nocasematch

change_resolv_conf "${rscf}"
        rm -f "${rscf}"

if [ -n "${search}" ]; then
            eventually_add_hostnames_domain_to_search "${search}"
        fi
    fi
}

# run given script
run_hook() {
    local script
    local exit_status
    script="${1}"

if [ -f ${script} ]; then
        . ${script}
    fi

if [ -n "${exit_status}" ] && [ "${exit_status}" -ne 0 ]; then
        logmessage "${script} returned non-zero exit status ${exit_status}"
    fi

return ${exit_status}
}

# run scripts in given directory
run_hookdir() {
    local dir
    dir="${1}"

if [ -d "${dir}" ]; then
        for script in $(find $dir -executable ! -empty); do
            run_hook ${script} || return $?
        done
    fi

return 0
}

exit_with_hooks() {
    # Source the documented exit-hook script, if it exists
    run_hook "${ETCDIR}/dhclient-exit-hooks" || exit $?
    # Now run scripts in the hooks directory.
    run_hookdir "${ETCDIR}/dhclient-exit-hooks.d" || exit $?

exit ${1}
}

quad2num() {
    if [ $# -eq 4 ]; then
        let n="${1} << 24 | ${2} << 16 | ${3} << 8 | ${4}"
        echo "${n}"
        return 0
    else
        echo "0"
        return 1
    fi
}

ip2num() {
    IFS='.' quad2num ${1}
}

num2ip() {
    let n="${1}"
    let o1="(${n} >> 24) & 0xff"
    let o2="(${n} >> 16) & 0xff"
    let o3="(${n} >> 8) & 0xff"
    let o4="${n} & 0xff"
    echo "${o1}.${o2}.${o3}.${o4}"
}

get_network_address() {
# get network address for the given IP address and (netmask or prefix)
    ip="${1}"
    nm="${2}"

if [ -n "${ip}" -a -n "${nm}" ]; then
        if [[ "${nm}" = *.* ]]; then
            ipcalc -s -n "${ip}" "${nm}" | cut -d '=' -f 2
        else
            ipcalc -s -n "${ip}/${nm}" | cut -d '=' -f 2
        fi
    fi
}

get_prefix() {
# get prefix for the given IP address and mask
    ip="${1}"
    nm="${2}"

if [ -n "${ip}" -a -n "${nm}" ]; then
        ipcalc -s -p "${ip}" "${nm}" | cut -d '=' -f 2
    fi
}

class_bits() {
    let ip=$(IFS='.' ip2num "${1}")
    let bits=32
    let mask='255'
    for ((i=0; i <= 3; i++, 'mask<<=8')); do
        let v='ip&mask'
        if [ "$v" -eq 0 ] ; then
             let bits-=8
        else
             break
        fi
    done
    echo $bits
}

is_router_reachable() {
    # handle DHCP servers that give us a router not on our subnet
    router="${1}"
    routersubnet="$(get_network_address "${router}" "${new_subnet_mask}")"
    mysubnet="$(get_network_address "${new_ip_address}" "${new_subnet_mask}")"

if [ ! "${routersubnet}" = "${mysubnet}" ]; then
        # TODO: This function should not have side effects such as adding or
        # removing routes. Can this be done with "ip route get" or similar
        # instead? Are there cases that rely on this route being created here?
        ip -4 route replace "${router}/32" dev "${interface}"
        if [ "$?" -ne 0 ]; then
            logmessage "failed to create host route for ${router}"
            return 1
        fi
    fi

return 0
}

add_default_gateway() {
    router="${1}"

if is_router_reachable "${router}" ; then
        if [ $# -gt 1 ] && [ -n "${2}" ] && [[ "${2}" -gt 0 ]]; then
            ip -4 route replace default via "${router}" dev "${interface}" metric "${2}"
        else
            ip -4 route replace default via "${router}" dev "${interface}"
        fi
        if [ $? -ne 0 ]; then
            logmessage "failed to create default route: ${router} dev ${interface} ${metric}"
            return 1
        else
            return 0
        fi
    fi

return 1
}

execute_client_side_configuration_scripts() {
# execute any additional client side configuration scripts we have
    if [ "${1}" == "config" ] || [ "${1}" == "restore" ]; then
        for f in ${ETCDIR}/dhclient.d/*.sh ; do
            if [ -x "${f}" ]; then
                subsystem="${f%.sh}"
                subsystem="${subsystem##*/}"
                . "${f}"
                "${subsystem}_${1}"
            fi
        done
    fi
}

flush_dev() {
# Instead of bringing the interface down (#574568)
# explicitly clear ARP cache and flush all addresses & routes.
    ip -4 addr flush dev "${1}" >/dev/null 2>&1
    ip -4 route flush dev "${1}" >/dev/null 2>&1
    ip -4 neigh flush dev "${1}" >/dev/null 2>&1
}

remove_old_addr() {
    if [ -n "${old_ip_address}" ]; then
        if [ -n "${old_prefix}" ]; then
            ip -4 addr del "${old_ip_address}/${old_prefix}" dev "${interface}" >/dev/null 2>&1
        else
            ip -4 addr del "${old_ip_address}" dev "${interface}" >/dev/null 2>&1
        fi
    fi
}

dhconfig() {
    if [ -n "${old_ip_address}" ] && [ -n "${alias_ip_address}" ] &&
       [ ! "${alias_ip_address}" = "${old_ip_address}" ]; then
        # possible new alias, remove old alias first
        ip -4 addr del "${old_ip_address}" dev "${interface}" label "${interface}:0"
    fi

if [ -n "${old_ip_address}" ] &&
       [ ! "${old_ip_address}" = "${new_ip_address}" ]; then
        # IP address changed. Delete all routes, and clear the ARP cache.
        flush_dev "${interface}"
    fi

# make sure the interface is up
    ip link set dev "${interface}" up

# replace = add if it doesn't exist or override (update lifetimes) if it's there
    ip -4 addr replace "${new_ip_address}/${new_prefix}" broadcast "${new_broadcast_address}" dev "${interface}" \
       valid_lft "${new_dhcp_lease_time}" preferred_lft "${new_dhcp_lease_time}" >/dev/null 2>&1

if [ "${reason}" = "BOUND" ] || [ "${reason}" = "REBOOT" ] ||
       [ ! "${old_ip_address}" = "${new_ip_address}" ] ||
       [ ! "${old_subnet_mask}" = "${new_subnet_mask}" ] ||
       [ ! "${old_network_number}" = "${new_network_number}" ] ||
       [ ! "${old_broadcast_address}" = "${new_broadcast_address}" ] ||
       [ ! "${old_routers}" = "${new_routers}" ] ||
       [ ! "${old_interface_mtu}" = "${new_interface_mtu}" ]; then

# The 576 MTU is only used for X.25 and dialup connections
        # where the admin wants low latency.  Such a low MTU can cause
        # problems with UDP traffic, among other things.  As such,
        # disallow MTUs from 576 and below by default, so that broken
        # MTUs are ignored, but higher stuff is allowed (1492, 1500, etc).
        if [ -n "${new_interface_mtu}" ] && [ "${new_interface_mtu}" -gt 576 ]; then
            ip link set dev "${interface}" mtu "${new_interface_mtu}"
        fi

# static routes
        if [ -n "${new_classless_static_routes}" ] ||
           [ -n "${new_static_routes}" ]; then
            if [ -n "${new_classless_static_routes}" ]; then
                IFS=', |' static_routes=(${new_classless_static_routes})
                # If the DHCP server returns both a Classless Static Routes option and
                # a Router option, the DHCP client MUST ignore the Router option. (RFC3442)
                new_routers=""
            else
                IFS=', |' static_routes=(${new_static_routes})
            fi
            route_targets=()

for((i=0; i<${#static_routes[@]}; i+=2)); do
                target=${static_routes[$i]}
                if [ -n "${new_classless_static_routes}" ]; then
                    if [ "${target}" = "0" ]; then
                        new_routers="${static_routes[$i+1]}"
                        continue
                    else
                        prefix=${target%%.*}
                        target=${target#*.}
                        IFS="." target_arr=(${target})
                        unset IFS
                        ((pads=4-${#target_arr[@]}))
                        for j in $(seq $pads); do
                            target="${target}.0"
                        done

# Client MUST zero any bits in the subnet number where the corresponding bit in the mask is zero.
                        # In other words, the subnet number installed in the routing table is the logical AND of
                        # the subnet number and subnet mask given in the Classless Static Routes option. (RFC3442)
                        target="$(get_network_address "${target}" "${prefix}")"
                    fi
                else
                    prefix=$(class_bits "${target}")
                fi
                gateway=${static_routes[$i+1]}

# special case 0.0.0.0 to allow static routing for link-local addresses
                # (including IPv4 multicast) which will not have a next-hop (#769463, #787318)
                if [ "${gateway}" = "0.0.0.0" ]; then
                    valid_gateway=0
                    scope='scope link'
                else
                    is_router_reachable "${gateway}"
                    valid_gateway=$?
                    scope=''
                fi
                if [ "${valid_gateway}" -eq 0 ]; then
                    metric=''
                    for t in "${route_targets[@]}"; do
                        if [ "${t}" = "${target}" ]; then
                            if [ -z "${metric}" ]; then
                                metric=1
                            else
                                ((metric=metric+1))
                            fi
                        fi
                    done

if [ -n "${metric}" ]; then
                        metric="metric ${metric}"
                    fi

ip -4 route replace "${target}/${prefix}" proto static via "${gateway}" dev "${interface}" ${metric} ${scope}

if [ $? -ne 0 ]; then
                        logmessage "failed to create static route: ${target}/${prefix} via ${gateway} dev ${interface} ${metric}"
                    else
                        route_targets=(${route_targets[@]} ${target})
                    fi
                fi
            done
        fi

# gateways
        if [[ ( "${DEFROUTE}" != "no" ) &&
              (( -z "${GATEWAYDEV}" ) || ( "${GATEWAYDEV}" = "${interface}" )) ]]; then
            if [[ ( -z "${GATEWAY}" ) ||
                  (( -n "${DHCLIENT_IGNORE_GATEWAY}" ) && ( "${DHCLIENT_IGNORE_GATEWAY}" = [Yy]* )) ]]; then
                metric="${METRIC:-}"
                let i="${METRIC:-0}"
                default_routers=()

for router in ${new_routers} ; do
                    added_router=-

for r in "${default_routers[@]}" ; do
                        if [ "${r}" = "${router}" ]; then
                            added_router=1
                        fi
                    done

if [ -z "${router}" ] ||
                       [ "${added_router}" = "1" ] ||
                       [ "$(IFS='.' ip2num ${router})" -le 0 ] ||
                       [[ ( "${router}" = "${new_broadcast_address}" ) &&
                          ( "${new_subnet_mask}" != "255.255.255.255" ) ]]; then
                        continue
                    fi

default_routers=(${default_routers[@]} ${router})
                    add_default_gateway "${router}" "${metric}"
                    let i=i+1
                    metric=${i}
                done
            elif [ -n "${GATEWAY}" ]; then
                routersubnet=$(get_network_address "${GATEWAY}" "${new_subnet_mask}")
                mysubnet=$(get_network_address "${new_ip_address}" "${new_subnet_mask}")

if [ "${routersubnet}" = "${mysubnet}" ]; then
                    ip -4 route replace default via "${GATEWAY}" dev "${interface}"
                fi
            fi
        fi
    fi

if [ ! "${new_ip_address}" = "${alias_ip_address}" ] &&
       [ -n "${alias_ip_address}" ]; then
        # Reset the alias address (fix: this should really only do this on changes)
        ip -4 addr flush dev "${interface}" label "${interface}:0" >/dev/null 2>&1
        ip -4 addr replace "${alias_ip_address}/${alias_prefix}" broadcast "${alias_broadcast_address}" dev "${interface}" label "${interface}:0"
        ip -4 route replace "${alias_ip_address}/32" dev "${interface}"
    fi

# After dhclient brings an interface UP with a new IP address, subnet mask, 
    # and routes, in the REBOOT/BOUND states -> search for "dhclient-up-hooks".
    if [ "${reason}" = "BOUND" ] || [ "${reason}" = "REBOOT" ] ||
       [ ! "${old_ip_address}" = "${new_ip_address}" ] ||
       [ ! "${old_subnet_mask}" = "${new_subnet_mask}" ] ||
       [ ! "${old_network_number}" = "${new_network_number}" ] ||
       [ ! "${old_broadcast_address}" = "${new_broadcast_address}" ] ||
       [ ! "${old_routers}" = "${new_routers}" ] ||
       [ ! "${old_interface_mtu}" = "${new_interface_mtu}" ]; then

if [ -x "${ETCDIR}/dhclient-${interface}-up-hooks" ]; then
            . "${ETCDIR}/dhclient-${interface}-up-hooks"
        elif [ -x ${ETCDIR}/dhclient-up-hooks ]; then
            . ${ETCDIR}/dhclient-up-hooks
        fi
    fi

make_resolv_conf

if [ -n "${new_host_name}" ] && need_hostname; then
        hostnamectl set-hostname --transient --no-ask-password "${new_host_name}"
    fi

if [[ ( "${DHCP_TIME_OFFSET_SETS_TIMEZONE}" = [yY1]* ) &&
          ( -n "${new_time_offset}" ) ]]; then
        # DHCP option "time-offset" is requested by default and should be
        # handled.  The geographical zone abbreviation cannot be determined
        # from the GMT offset, but the $ZONEINFO/Etc/GMT$offset file can be
        # used - note: this disables DST.
        ((z=new_time_offset/3600))
        ((hoursWest=$(printf '%+d' $z)))

if (( $hoursWest < 0 )); then
            # tzdata treats negative 'hours west' as positive 'gmtoff'!
            ((hoursWest*=-1))
        fi

tzfile=/usr/share/zoneinfo/Etc/GMT$(printf '%+d' ${hoursWest})
        if [ -e "${tzfile}" ]; then
            cp -fp "${tzfile}" /etc/localtime
            touch /etc/localtime
        fi
    fi

execute_client_side_configuration_scripts "config"
}

wait_for_link_local() {
    # we need a link-local address to be ready (not tentative)
    for i in $(seq 50); do
        linklocal=$(ip -6 addr show dev "${interface}" scope link)
        # tentative flag means DAD is still not complete
        tentative=$(echo "${linklocal}" | grep tentative)
        [[ -n "${linklocal}" && -z "${tentative}" ]] && exit_with_hooks 0
        sleep 0.1
    done
}

# Section 18.1.8. (Receipt of Reply Messages) of RFC 3315 says:
# The client SHOULD perform duplicate address detection on each of
# the addresses in any IAs it receives in the Reply message before
# using that address for traffic.
add_ipv6_addr_with_DAD() {
            ip -6 addr replace "${new_ip6_address}/${new_ip6_prefixlen}" \
                dev "${interface}" scope global valid_lft "${new_max_life}" \
                                          preferred_lft "${new_preferred_life}"

# repeatedly test whether newly added address passed
            # duplicate address detection (DAD)
            for i in $(seq 5); do
                sleep 1 # give the DAD some time

addr=$(ip -6 addr show dev "${interface}" \
                       | grep "${new_ip6_address}/${new_ip6_prefixlen}")

# tentative flag == DAD is still not complete
                tentative=$(echo "${addr}" | grep tentative)
                # dadfailed flag == address is already in use somewhere else
                dadfailed=$(echo "${addr}" | grep dadfailed)

if [ -n "${dadfailed}" ] ; then
                    # address was added with valid_lft/preferred_lft 'forever', remove it
                    ip -6 addr del "${new_ip6_address}/${new_ip6_prefixlen}" dev "${interface}"
                    exit_with_hooks 3
                fi
                if [ -z "${tentative}" ] ; then
                    if [ -n "${addr}" ]; then
                        # DAD is over
                        return 0
                    else
                        # address was auto-removed (or not added at all)
                        exit_with_hooks 3
                    fi
                fi
            done
            return 0
}

dh6config() {
    if [ -n "${old_ip6_prefix}" ] ||
       [ -n "${new_ip6_prefix}" ]; then
        echo "Prefix ${reason} old=${old_ip6_prefix} new=${new_ip6_prefix}"
        exit_with_hooks 0
    fi

case "${reason}" in
        BOUND6)
            if [ -z "${new_ip6_address}" ] ||
               [ -z "${new_ip6_prefixlen}" ]; then
                exit_with_hooks 2
            fi

add_ipv6_addr_with_DAD

make_resolv_conf
            ;;

RENEW6|REBIND6)
            if [[ -n "${new_ip6_address}" ]] &&
               [[ -n "${new_ip6_prefixlen}" ]]; then
               if [[  ! "${new_ip6_address}" = "${old_ip6_address}" ]]; then
                   [[ -n "${old_ip6_address}" ]] && ip -6 addr del "${old_ip6_address}" dev "${interface}"
               fi
               # call it even if new_ip6_address = old_ip6_address to update lifetimes
               add_ipv6_addr_with_DAD
            fi

if [ ! "${new_dhcp6_name_servers}" = "${old_dhcp6_name_servers}" ] ||
               [ ! "${new_dhcp6_domain_search}" = "${old_dhcp6_domain_search}" ]; then
                make_resolv_conf
            fi
            ;;

DEPREF6)
            if [ -z "${new_ip6_prefixlen}" ]; then
                exit_with_hooks 2
            fi

ip -6 addr change "${new_ip6_address}/${new_ip6_prefixlen}" \
                dev "${interface}" scope global preferred_lft 0
            ;;
    esac

execute_client_side_configuration_scripts "config"
}

# Functions from /etc/sysconfig/network-scripts/network-functions

need_hostname ()
{
    CHECK_HOSTNAME=$(hostnamectl --transient)
    if [[ "${CHECK_HOSTNAME}" = "(none)" ]] ||
       [[ "${CHECK_HOSTNAME}" = "localhost" ]] ||
       [[ "${CHECK_HOSTNAME}" = "localhost.localdomain" ]]; then
        return 0
    else
        return 1
    fi
}

# Takes one argument - temporary resolv.conf file
change_resolv_conf ()
{
    options=$(grep '^[\ \	]*option' "${RESOLVCONF}" 2>/dev/null);
    if [[ -n "${options}" ]]; then
       # merge options from existing resolv.conf with specified resolv.conf content
       newres="${options}"$'\n'$(grep -vF "${options}" "${1}");
    else
       newres=$(cat "${1}");
    fi;

eval $(echo "${newres}" > "${RESOLVCONF}"; echo "status=$?")
    if [[ $status -eq 0 ]]; then
        logger -p local7.notice -t "NET" -i "${0} : updated ${RESOLVCONF}";
        [[ -e /var/run/nscd/socket ]] && /usr/sbin/nscd -i hosts; # invalidate cache
    fi;
    return $status;
}

get_config_by_name ()
{
    LANG=C grep -E -i -l \
        "^[[:space:]]*NAME=\"(Auto |System )?${1}\"" \
        /etc/sysconfig/network-scripts/ifcfg-* \
        | LC_ALL=C sed -e "$__sed_discard_ignored_files"
}

get_hwaddr ()
{
    if [ -f /sys/class/net/${1}/address ]; then
        awk '{ print toupper($0) }' < /sys/class/net/${1}/address
    elif [ -d "/sys/class/net/${1}" ]; then
        LC_ALL= LANG= ip -o link show ${1} 2>/dev/null | \
            awk '{ print toupper(gensub(/.*link\/[^ ]* ([[:alnum:]:]*).*/,
                                        "\\1", 1)); }'
    fi
}

validate_resolv_conf()
{
    # It's possible to have broken symbolic link $RESOLVCONF -> <some_nm_dir>
    # https://bugzilla.redhat.com/1475279
    # Remove broken link and hope NM will survive
    if [ -h "${RESOLVCONF}" -a ! -e "${RESOLVCONF}" ];
    then
        logmessage "${RESOLVCONF} is broken symlink. Recreating..."
        unlink "${RESOLVCONF}"
        touch "${RESOLVCONF}"
    fi;
}

get_config_by_hwaddr ()
{
    LANG=C grep -il "^[[:space:]]*HWADDR=\"\?${1}\"\?$[[:space:]#]\|$$" /etc/sysconfig/network-scripts/ifcfg-* \
      | LC_ALL=C sed -e "$__sed_discard_ignored_files"
}

get_config_by_device ()
{
    LANG=C grep -l "^[[:space:]]*DEVICE=\"\?${1}\"\?$[[:space:]#]\|$$" \
        /etc/sysconfig/network-scripts/ifcfg-* \
        | LC_ALL=C sed -e "$__sed_discard_ignored_files"
}

need_config ()
{
    # A sed expression to filter out the files that is_ignored_file recognizes
    __sed_discard_ignored_files='/$~\|\.bak\|\.orig\|\.rpmnew\|\.rpmorig\|\.rpmsave$$/d'

local nconfig

CONFIG="ifcfg-${1}"
    [ -f "${CONFIG}" ] && return
    CONFIG="${1##*/}"
    [ -f "${CONFIG}" ] && return
    nconfig=$(get_config_by_name "${1}")
    if [ -n "$nconfig" ] && [ -f "$nconfig" ]; then
      CONFIG=${nconfig##*/}
      return
    fi
    local addr=$(get_hwaddr ${1})
    if [ -n "$addr" ]; then
      nconfig=$(get_config_by_hwaddr ${addr})
      if [ -n "$nconfig" ] ; then
        CONFIG=${nconfig##*/}
        [ -f "${CONFIG}" ] && return
      fi
    fi
    nconfig=$(get_config_by_device ${1})
    if [ -n "$nconfig" ] && [ -f "$nconfig" ]; then
      CONFIG=${nconfig##*/}
      return
    fi
}

# We need this because of PEERDNS
source_config ()
{
    CONFIG=${CONFIG##*/}
    . /etc/sysconfig/network-scripts/$CONFIG
}

#
# ### MAIN
#

# Invoke the local dhcp client enter hooks, if they exist.
run_hook "${ETCDIR}/dhclient-enter-hooks" || exit $?
run_hookdir "${ETCDIR}/dhclient-enter-hooks.d" || exit $?

[ "${PEERDNS}" = "no" ] || validate_resolv_conf

if [ -f /etc/sysconfig/network ]; then
    . /etc/sysconfig/network
fi

if [ -f /etc/sysconfig/networking/network ]; then
    . /etc/sysconfig/networking/network
fi

## it's possible initscripts package is not installed
## for example in container. Don't flood stderr then
if [ -d /etc/sysconfig/network-scripts ]; then
        cd /etc/sysconfig/network-scripts
        CONFIG="${interface}"
        need_config "${CONFIG}"
        source_config >/dev/null 2>&1
fi;

# In case there's some delay in rebinding, it might happen, that the valid_lft drops to 0,
# address is removed by kernel and then re-added few seconds later by dhclient-script.
# With this work-around the address lives a minute longer.
# "4294967235" = infinite (forever) - 60
[[ "${new_dhcp_lease_time}" -lt "4294967235" ]] && new_dhcp_lease_time=$((new_dhcp_lease_time + 60))
[[ "${new_max_life}" -lt "4294967235" ]] && new_max_life=$((new_max_life + 60))

new_prefix="$(get_prefix "${new_ip_address}" "${new_subnet_mask}")"
old_prefix="$(get_prefix "${old_ip_address}" "${old_subnet_mask}")"
alias_prefix="$(get_prefix "${alias_ip_address}" "${alias_subnet_mask}")"

case "${reason}" in
    MEDIUM|ARPCHECK|ARPSEND)
        # Do nothing
        exit_with_hooks 0
        ;;

PREINIT)
        if [ -n "${alias_ip_address}" ]; then
            # Flush alias, its routes will disappear too.
            ip -4 addr flush dev "${interface}" label "${interface}:0" >/dev/null 2>&1
        fi

# upstream dhclient-script removes (ifconfig $interface 0 up) old adresses in PREINIT,
        # but we sometimes (#125298) need (for iSCSI/nfs root to have a dhcp interface) to keep the existing ip
        # flush_dev ${interface}
        ip link set dev "${interface}" up
        if [ -n "${DHCLIENT_DELAY}" ] && [ "${DHCLIENT_DELAY}" -gt 0 ]; then
            # We need to give the kernel some time to get the interface up.
            sleep "${DHCLIENT_DELAY}"
        fi

exit_with_hooks 0
        ;;

PREINIT6)
        # ensure interface is up
        ip link set dev "${interface}" up

# Removing stale addresses from aborted clients shouldn't be needed
        # since we've been adding addresses with lifetimes.
        # Which means that kernel eventually removes them automatically.
        # ip -6 addr flush dev "${interface}" scope global permanent

wait_for_link_local

exit_with_hooks 0
        ;;

BOUND|RENEW|REBIND|REBOOT)
        if [ -z "${interface}" ] || [ -z "${new_ip_address}" ]; then
            exit_with_hooks 2
        fi
        if arping -D -q -c2 -I "${interface}" "${new_ip_address}"; then
            dhconfig
            exit_with_hooks 0
        else  # DAD failed, i.e. address is already in use
            ARP_REPLY=$(arping -D -c2 -I "${interface}" "${new_ip_address}" | grep reply | awk '{print toupper($5)}' | cut -d "[" -f2 | cut -d "]" -f1)
            OUR_MACS=$(ip link show | grep link | awk '{print toupper($2)}' | uniq)
            if [[ "${OUR_MACS}" = *"${ARP_REPLY}"* ]]; then
                # the reply can come from our system, that's OK (#1116004#c33)
                dhconfig
                exit_with_hooks 0
            else
                exit_with_hooks 1
            fi
        fi
        ;;

BOUND6|RENEW6|REBIND6|DEPREF6)
        dh6config
        exit_with_hooks 0
        ;;

EXPIRE6|RELEASE6|STOP6)
        if [ -z "${old_ip6_address}" ] || [ -z "${old_ip6_prefixlen}" ]; then
            exit_with_hooks 2
        fi

ip -6 addr del "${old_ip6_address}/${old_ip6_prefixlen}" \
            dev "${interface}"

execute_client_side_configuration_scripts "restore"

if [ -x "${ETCDIR}/dhclient-${interface}-down-hooks" ]; then
            . "${ETCDIR}/dhclient-${interface}-down-hooks"
        elif [ -x ${ETCDIR}/dhclient-down-hooks ]; then
            . ${ETCDIR}/dhclient-down-hooks
        fi

exit_with_hooks 0
        ;;

EXPIRE|FAIL|RELEASE|STOP)
        execute_client_side_configuration_scripts "restore"

if [ -n "${alias_ip_address}" ]; then
            # Flush alias
            ip -4 addr flush dev "${interface}" label "${interface}:0" >/dev/null 2>&1
        fi

# upstream script sets interface down here,
        # we only remove old ip address
        #flush_dev ${interface}
        remove_old_addr

if [ -n "${alias_ip_address}" ]; then
            ip -4 addr replace "${alias_ip_address}/${alias_prefix}" broadcast "${alias_broadcast_address}" dev "${interface}" label "${interface}:0"
            ip -4 route replace "${alias_ip_address}/32" dev "${interface}"
        fi

exit_with_hooks 0
        ;;

TIMEOUT)
        if [ -n "${new_routers}" ]; then
            if [ -n "${alias_ip_address}" ]; then
                ip -4 addr flush dev "${interface}" label "${interface}:0" >/dev/null 2>&1
            fi

ip -4 addr replace "${new_ip_address}/${new_prefix}" \
                broadcast "${new_broadcast_address}" dev "${interface}" \
                valid_lft "${new_dhcp_lease_time}" preferred_lft "${new_dhcp_lease_time}"
            set ${new_routers}

if ping -q -c 1 -w 10 -I "${interface}" "${1}"; then
                dhconfig
                exit_with_hooks 0
            fi

#flush_dev ${interface}
            remove_old_addr
            exit_with_hooks 1
        else
            exit_with_hooks 1
        fi
        ;;

*)
        logmessage "unhandled state: ${reason}"
        exit_with_hooks 1
        ;;
esac

exit_with_hooks 0

${this.title}

Code Editor : dhclient-script