[ SEA-GHOST MINI SHELL]
# -*-Shell-script-*-
#
# This file is not a stand-alone shell script; it provides functions
# to network scripts that source it.
# Set up a default search path.
PATH="/sbin:/usr/sbin:/bin:/usr/bin"
export PATH
# We need to initialize the $HOSTNAME variable by ourselves now:
# (It was previously done for RHEL-6 branch, but got lost in time.)
HOSTNAME="$(hostname)"
[ -z "$__sed_discard_ignored_files" ] && . /etc/init.d/functions
get_hwaddr ()
{
if [ -f /sys/class/net/${1}/address ]; then
tr '[a-z]' '[A-Z]' < /sys/class/net/${1}/address
elif [ -d "/sys/class/net/${1}" ]; then
LC_ALL= LANG= ip -o link show ${1} 2>/dev/null | \
awk '{ print toupper(gensub(/.*link\/[^ ]* ([[:alnum:]:]*).*/,
"\\1", 1)); }'
fi
}
get_config_by_device ()
{
LANG=C grep -l "^[[:space:]]*DEVICE=['\"]\?${1}['\"]\?\([[:space:]#]\|$\)" \
/etc/sysconfig/network-scripts/ifcfg-* \
| LC_ALL=C sed -e "$__sed_discard_ignored_files"
}
get_config_by_hwaddr ()
{
LANG=C grep -il "^[[:space:]]*HWADDR=['\"]\?${1}['\"]\?\([[:space:]#]\|$\)" /etc/sysconfig/network-scripts/ifcfg-* \
| LC_ALL=C sed -e "$__sed_discard_ignored_files"
}
get_config_by_subchannel ()
{
LANG=C grep -E -i -l \
"^[[:space:]]*SUBCHANNELS=['\"]?([0-9]\.[0-9]\.[a-f0-9]+,){0,2}${1}(,[0-9]\.[0-9]\.[a-f0-9]+){0,2}['\"]?([[:space:]]+#|[[:space:]]*$)" \
/etc/sysconfig/network-scripts/ifcfg-* \
| LC_ALL=C sed -e "$__sed_discard_ignored_files"
}
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_device_by_hwaddr ()
{
LANG=C ip -o link | awk -F ': ' -vIGNORECASE=1 '!/link\/ieee802\.11/ && /'"$1"'/ { print $2 }'
}
get_uuid_by_config ()
{
dbus-send --system --print-reply --dest=com.redhat.ifcfgrh1 /com/redhat/ifcfgrh1 com.redhat.ifcfgrh1.GetIfcfgDetails string:"/etc/sysconfig/network-scripts/$1" 2>/dev/null | awk -F '"' '/string / { print $2 }'
}
generate_lease_file_name ()
{
local ver=$1
LEASEFILE="/var/lib/dhclient/dhclient$ver-${DEVICE}.leases"
if [ -f $LEASEFILE ]; then
return
fi
LEASEFILE="/var/lib/dhclient/dhclient$ver-${UUID}-${DEVICE}.lease"
}
generate_config_file_name ()
{
local ver=$1
if [ -s /etc/dhcp/dhclient$ver-${DEVICE}.conf ]; then
DHCLIENTCONF="-cf /etc/dhcp/dhclient$ver-${DEVICE}.conf";
elif [ -s /etc/dhclient$ver-${DEVICE}.conf ]; then
DHCLIENTCONF="-cf /etc/dhclient$ver-${DEVICE}.conf";
else
DHCLIENTCONF='';
fi
}
need_config ()
{
local nconfig
CONFIG="ifcfg-${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
}
source_config ()
{
CONFIG=${CONFIG##*/}
DEVNAME=${CONFIG##ifcfg-}
. /etc/sysconfig/network-scripts/$CONFIG
[ -r "keys-$DEVNAME" ] && . /etc/sysconfig/network-scripts/keys-$DEVNAME
case "$TYPE" in
Ethernet)
DEVICETYPE="eth"
;;
CIPE)
DEVICETYPE="cipcb"
;;
IPSEC)
DEVICETYPE="ipsec"
;;
Modem)
DEVICETYPE="ppp"
;;
xDSL)
DEVICETYPE="ppp"
;;
ISDN)
DEVICETYPE="ippp"
;;
Wireless)
DEVICETYPE="eth"
;;
"Token Ring")
DEVICETYPE="eth"
;;
CTC)
DEVICETYPE="ctc"
;;
GRE | GRE6 | IPIP | IPIP6)
DEVICETYPE="tunnel"
;;
SIT | sit)
DEVICETYPE="sit"
;;
InfiniBand | infiniband)
DEVICETYPE="ib"
;;
OVS*)
DEVICETYPE="ovs"
;;
esac
if [ -n "$HWADDR" ]; then
HWADDR=$(tr '[a-z]' '[A-Z]' <<<"$HWADDR")
fi
if [ -n "$MACADDR" ]; then
MACADDR=$(tr '[a-z]' '[A-Z]' <<<"$MACADDR")
fi
[ -z "$DEVICE" -a -n "$HWADDR" ] && DEVICE=$(get_device_by_hwaddr $HWADDR)
[ -z "$DEVICETYPE" ] && DEVICETYPE=$(echo ${DEVICE} | sed "s/[0-9]*$//")
[ -z "$REALDEVICE" -a -n "$PARENTDEVICE" ] && REALDEVICE=$PARENTDEVICE
[ -z "$REALDEVICE" ] && REALDEVICE=${DEVICE%%:*}
[ -z "$SYSCTLDEVICE" ] && SYSCTLDEVICE=${REALDEVICE/.//}
if [ "${DEVICE}" != "${REALDEVICE}" ]; then
ISALIAS=yes
else
ISALIAS=no
fi
if is_nm_running && [ "$REALDEVICE" != "lo" ] ; then
nm_con_load "$CONFIG"
if ! is_false $NM_CONTROLLED; then
UUID=$(get_uuid_by_config $CONFIG)
[ -n "$UUID" ] && _use_nm=true
fi
fi
}
nm_con_load () {
dbus-send --system --print-reply \
--dest=org.freedesktop.NetworkManager \
/org/freedesktop/NetworkManager/Settings \
org.freedesktop.NetworkManager.Settings.LoadConnections \
array:string:"/etc/sysconfig/network-scripts/${1}" >/dev/null 2>&1
}
ethtool_set()
{
oldifs=$IFS;
IFS=';';
if [ -n "${ETHTOOL_DELAY}" ]; then
# Convert microseconds to seconds:
local ETHTOOL_DELAY_SEC=$(convert2sec ${ETHTOOL_DELAY} micro)
sleep ${ETHTOOL_DELAY_SEC}
fi
for opts in $ETHTOOL_OPTS ; do
IFS=$oldifs;
if [[ "${opts}" =~ [[:space:]]*- ]]; then
/sbin/ethtool $opts
else
/sbin/ethtool -s ${REALDEVICE} $opts
fi
IFS=';';
done
IFS=$oldifs;
}
expand_config ()
{
local i=0 val
for idx in '' {0..255} ; do
ipaddr[$i]=$(eval echo '$'IPADDR$idx)
if [ -z "${ipaddr[$i]}" ]; then
[ "$idx" ] && [ $idx -ge 2 ] && break
continue
fi
prefix[$i]=$(eval echo '$'PREFIX$idx)
netmask[$i]=$(eval echo '$'NETMASK$idx)
broadcast[$i]=$(eval echo '$'BROADCAST$idx)
arpcheck[$i]=$(eval echo '$'ARPCHECK$idx)
arpupdate[$i]=$(eval echo '$'ARPUPDATE$idx)
if [ "${prefix[$i]}x" != "x" ]; then
val=$(/bin/ipcalc --netmask "${ipaddr[$i]}/${prefix[$i]}")
netmask[$i]=${val##NETMASK=}
fi
if [ "${netmask[$i]}x" = "x" ]; then
val=$(/bin/ipcalc --netmask "${ipaddr[$i]}")
netmask[$i]=${val##NETMASK=}
fi
if [ "${prefix[$i]}x" = "x" ]; then
val=$(/bin/ipcalc --prefix ${ipaddr[$i]} ${netmask[$i]})
prefix[$i]=${val##PREFIX=}
fi
if [ "${broadcast[$i]}x" = "x" ]; then
val=$(/bin/ipcalc --broadcast ${ipaddr[$i]} ${netmask[$i]})
broadcast[$i]=${val##BROADCAST=}
fi
if [ "${arpcheck[$i]}x" != "x" ]; then
arpcheck[$i]=${arpcheck[$i]##ARPCHECK=}
arpcheck[$i]=${arpcheck[$i],,*}
fi
if [ "${arpupdate[$i]}x" != "x" ]; then
arpupdate[$i]=${arpupdate[$i]##ARPUPDATE=}
arpupdate[$i]=${arpupdate[$i],,*}
fi
i=$((i+1))
done
[ -n "$DHCP_HOSTNAME" ] && DHCP_HOSTNAME=${DHCP_HOSTNAME%%.*}
if [ -z "${NETWORK}" ]; then
eval $(/bin/ipcalc --network ${ipaddr[0]} ${netmask[0]})
fi
}
toggle_value ()
{
if [ "$2" = "yes" -o "$2" = "YES" ] ; then
echo "$1 on"
elif [ "$2" = "no" -o "$2" = "NO" ] ; then
echo "$1 off"
else
echo ''
fi
}
do_netreport ()
{
# Notify programs that have requested notification
(
cd /var/run/netreport || exit
for i in * ; do
if [ -f $i ]; then
if [ "$(id -u)" = "0" ]; then
OWNER=$(stat -c %U $i)
su -s /bin/bash $OWNER -c "kill -SIGIO $i >/dev/null 2>&1 || rm -f $i >/dev/null 2>&1" > /dev/null 2>&1
else
kill -SIGIO $i >/dev/null 2>&1 || rm -f $i >/dev/null 2>&1
fi
fi
done
)
}
is_nm_running ()
{
dbus-send --system --print-reply \
--dest=org.freedesktop.DBus \
/org/freedesktop/DBus \
org.freedesktop.DBus.GetNameOwner \
string:"org.freedesktop.NetworkManager" >/dev/null 2>&1
}
is_nm_active ()
{
LANG=C nmcli -t --fields device,state dev status 2>/dev/null | grep -q "^${1}:connected$"
}
is_nm_handling ()
{
LANG=C nmcli -t --fields device,state dev status 2>/dev/null | grep -q "^\(${1}:connected\)\|\(${1}:connecting.*\)$"
}
is_nm_device_unmanaged ()
{
LANG=C nmcli -t --fields GENERAL dev show "${1}" 2>/dev/null | awk -F ':' '/GENERAL.STATE/ { if ($2 == "unmanaged") exit 0 ; else exit 1; }'
}
# Sets $alias to the device module if $? != 0
is_available ()
{
[ -z "$1" ] && return 1
[ -d "/sys/class/net/$1" ] && return 0
[ -n "$BONDING_OPTS" ] && install_bonding_driver $1
alias=$(modprobe -c | awk \
'BEGIN { alias = ""; }
$1 == "alias" && $2 == "'"$1"'" { alias = $3; }
$1 == "install" { install[$2] = $3; }
END {
cmd = install[alias];
print alias;
if (alias == "" || alias == "off" || cmd == "/bin/true" || cmd == ":")
exit 1;
exit 0;
}
')
[ $? -eq 0 ] || return 2
modprobe $1 > /dev/null 2>&1 || {
return 1
}
if [ -n "$HWADDR" ]; then
local curdev=$(get_device_by_hwaddr "$HWADDR")
if [ -z "$curdev" ]; then
return 1
fi
fi
if [ ${alias} = "bonding" ]; then
install_bonding_driver $1
fi
[ -d "/sys/class/net/$1" ] && return 0 || return 1
}
is_available_wait ()
{
[ -z "$1" ] && return 1
local retry=${2##*[!0-9]*}
is_available $1 && return 0
ret=$?
while [ 0"$retry" -gt 0 ]; do
sleep 1
[ -d "/sys/class/net/$1" ] && return 0
retry=$(($retry -1))
done
return $ret
}
is_hostname_set ()
{
case "${HOSTNAME}" in
'(none)' | 'localhost' | 'localhost.localdomain')
# Hostname NOT set:
return 1
;;
*)
# Hostname IS set:
return 0
;;
esac
}
need_hostname ()
{
# Should we avoid obtaining hostname from DHCP? (user override)
is_true "${NO_DHCP_HOSTNAME}" && return 1
if is_hostname_set; then
# Hostname is already set, we do not need to acquire it:
return 1
else
# Hostname is NOT set, we need to acquire it:
return 0
fi
}
set_hostname_options ()
{
# User explicitly requires to *not* send DHCP_HOSTNAME, DHCP_FQDN or HOSTNAME:
is_false "${DHCP_SEND_HOSTNAME}" && return
if [[ -n "${DHCP_HOSTNAME}" && -n "${DHCP_FQDN}" ]]; then
net_log $"Both 'DHCP_HOSTNAME=${DHCP_HOSTNAME}' and 'DHCP_FQDN=${DHCP_FQDN}' are configured... Using DHCP_FQDN." warning
fi
local hostname_options=''
# DHCP_FQDN takes precedence before DHCP_HOSTNAME -- as it does in NetworkManager,
# and DHCP_HOSTNAME takes precedence before HOSTNAME:
if [[ -n "${DHCP_FQDN}" ]]; then
hostname_options="-F ${DHCP_FQDN}"
elif [[ -n "${DHCP_HOSTNAME}" ]]; then
hostname_options="-H ${DHCP_HOSTNAME}"
elif is_hostname_set; then
# We need to truncate the hostname in case it is the FQDN:
hostname_options="-H ${HOSTNAME%%.*}"
else
# Nothing to send to the DHCP server:
# ['(none)', 'localhost' or 'localhost.localdomain' are not valid]
return
fi
# Append the hostname options to the content of passed variable name:
eval "$1='${!1} ${hostname_options}'"
return
}
set_hostname ()
{
hostname $1
if ! grep search /etc/resolv.conf >/dev/null 2>&1; then
domain=$(echo $1 | sed 's/^[^\.]*\.//')
if [ -n "$domain" ]; then
rsctmp=$(mktemp /tmp/XXXXXX);
cat /etc/resolv.conf > $rsctmp
echo "search $domain" >> $rsctmp
change_resolv_conf $rsctmp
/bin/rm -f $rsctmp
fi
fi
}
check_device_down ()
{
[ ! -d /sys/class/net/$1 ] && return 0
if LC_ALL=C ip -o link show dev $1 2>/dev/null | grep -q ",UP" ; then
return 1
else
return 0
fi
}
check_link_down ()
{
if ! LC_ALL=C ip link show dev $1 2>/dev/null| grep -q ",UP" ; then
ip link set dev $1 up >/dev/null 2>&1
fi
timeout=0
delay=10
[ -n "$LINKDELAY" ] && delay=$(($LINKDELAY * 2))
while [ $timeout -le $delay ]; do
[ "$(cat /sys/class/net/$REALDEVICE/carrier 2>/dev/null)" != "0" ] && return 1
sleep 0.5
timeout=$((timeout+1))
done
return 0
}
check_default_route ()
{
LC_ALL=C ip route list match 0.0.0.0/0 | grep -q default
}
find_gateway_dev ()
{
. /etc/sysconfig/network
if [ -n "${GATEWAY}" -a "${GATEWAY}" != "none" ] ; then
dev=$(LC_ALL=C /sbin/ip route get to "${GATEWAY}" 2>/dev/null | \
sed -n 's/.* dev \([[:alnum:]]*\) .*/\1/p')
if [ -n "$dev" ]; then
GATEWAYDEV="$dev"
fi
fi
}
# After the device $1 goes away, restore the standard default route; typically
# used for ppp with DEFROUTE temporarily replacing the "standard" default
# route.
# FIXME: This function doesn't support some newer features (GATEWAY in ifcfg,
# $WINDOW, $METRIC)
add_default_route ()
{
. /etc/sysconfig/network
check_default_route && return 0
find_gateway_dev
if [ "$GATEWAYDEV" != "" -a -n "${GATEWAY}" -a \
"${GATEWAY}" != "none" ]; then
if ! check_device_down $1; then
if [ "$GATEWAY" = "0.0.0.0" ]; then
/sbin/ip route add default dev ${GATEWAYDEV}
else
/sbin/ip route add default via ${GATEWAY}
fi
fi
elif [ -f /etc/default-routes ]; then
while read spec; do
/sbin/ip route add $spec
done < /etc/default-routes
rm -f /etc/default-routes
fi
}
is_wireless_device ()
{
[ -x /usr/sbin/iw ] || return 1
LC_ALL=C /usr/sbin/iw dev $1 info > /dev/null 2>&1 && return 0
return 1
}
phy_wireless_device ()
{
cat /sys/class/net/$1/phy80211/name
}
bond_master_exists ()
{
local bond_name
[ -z "${1}" ] && return 1
[ ! -f /sys/class/net/bonding_masters ] && return 1
for bond_name in $(< /sys/class/net/bonding_masters); do
[ "${bond_name}" == "${1}" ] && return 0
done
return 1
}
install_bonding_driver ()
{
local fn="install_bonding_driver"
if ! bond_master_exists ${1}; then
modprobe bonding || return 1
echo "+$1" > /sys/class/net/bonding_masters 2>/dev/null
fi
(
# Set config here
need_config "$1"
source_config
if [ -f /sys/class/net/${DEVICE}/bonding/slaves ] && [ $(wc -l < /sys/class/net/${DEVICE}/bonding/slaves) -eq 0 ]; then
/sbin/ip link set dev ${DEVICE} down
# parse options and put them to arrays
for arg in $BONDING_OPTS ; do
bopts_keys[${#bopts_keys[*]}]=${arg%%=*}
bopts_vals[${#bopts_vals[*]}]=${arg##*=}
done
# add the bits to setup driver parameters here
# first set mode, miimon
for (( idx=0; idx < ${#bopts_keys[*]}; idx++ )) ; do
key=${bopts_keys[$idx]}
value=${bopts_vals[$idx]}
if [ "${key}" = "mode" ] ; then
echo "${value}" > /sys/class/net/${DEVICE}/bonding/$key || {
net_log $"Failed to set value '$value' [mode] to ${DEVICE} bonding device" err $fn
}
bopts_keys[$idx]=""
fi
if [ "${key}" = "miimon" ] ; then
echo "${value}" > /sys/class/net/${DEVICE}/bonding/$key || {
net_log $"Failed to set value '$value' [miimon] to ${DEVICE} bonding device" err $fn
}
bopts_keys[$idx]=""
fi
done
# set all other remaining options
for (( idx=0; idx < ${#bopts_keys[*]}; idx++ )) ; do
key=${bopts_keys[$idx]}
value=${bopts_vals[$idx]}
# option already set; take next
[[ -z "$key" ]] && continue
if [ "${key}" = "arp_ip_target" -a "${value:0:1}" != "+" ]; then
OLDIFS=$IFS;
IFS=',';
for arp_ip in $value; do
if ! grep -q $arp_ip /sys/class/net/${DEVICE}/bonding/$key; then
echo +$arp_ip > /sys/class/net/${DEVICE}/bonding/$key || {
net_log $"Failed to set '$arp_ip' value [arp_ip_target] to ${DEVICE} bonding device" err $fn
}
fi
done
IFS=$OLDIFS;
elif [ "${key}" = "arp_ip_target" ]; then
if ! grep -q ${value#+} /sys/class/net/${DEVICE}/bonding/$key; then
echo "$value" > /sys/class/net/${DEVICE}/bonding/$key || {
net_log $"Failed to set '$value' value [arp_ip_target] to ${DEVICE} bonding device" err $fn
}
fi
elif [ "${key}" != "primary" ]; then
echo $value > /sys/class/net/${DEVICE}/bonding/$key || {
net_log $"Failed to set '$value' value [$key] to ${DEVICE} bonding device" err $fn
}
fi
done
fi
)
return 0
}
is_bonding_device ()
{
[ -f "/sys/class/net/$1/bonding/slaves" ]
}
# Invoke this when /etc/resolv.conf has changed:
change_resolv_conf ()
{
s=$(/bin/grep '^[\ \ ]*option' /etc/resolv.conf 2>/dev/null)
if [ $# -gt 1 ]; then
if [ "x$s" != "x" ]; then
s="$s"$'\n'
fi
n_args=$#
while [ $n_args -gt 0 ]; do
case "$s" in
*$1*)
shift
n_args=$(($n_args-1))
continue
;;
esac
s="$s$1"
shift
if [ $# -gt 0 ]; then
s="$s"$'\n'
fi
n_args=$(($n_args-1))
done
elif [ $# -eq 1 ]; then
if [ "x$s" != "x" ]; then
s="$s"$'\n'$(/bin/grep -vF "$s" $1)
else
s=$(cat $1)
fi
fi
(echo "$s" > /etc/resolv.conf) >/dev/null 2>&1;
r=$?
if [ $r -eq 0 ]; then
[ -x /sbin/restorecon ] && /sbin/restorecon /etc/resolv.conf >/dev/null 2>&1 # reset the correct context
/usr/bin/logger -p local7.notice -t "NET" -i "$0 : updated /etc/resolv.conf"
[ -e /var/run/nscd/socket ] && /usr/sbin/nscd -i hosts # invalidate cache
fi
return $r
}
# Logging function
#
# Usage: net_log <message> <err|warning|info> <optional file/function name>
#
# Default level is 'err'.
net_log()
{
local message="$1"
local level="$2"
local name="$3"
[ -z "$message" ] && return 1
[ -z "$level" ] && level=err
[ -z "$name" ] && name=$0
case $level in
'debug')
local txt_level=$"DEBUG "
;;
'err')
local txt_level=$"ERROR "
;;
'warning')
local txt_level=$"WARN "
;;
'info')
local txt_level=$"INFO "
;;
esac
echo "$txt_level: [$name] $message"
if [ -x /usr/bin/logger ]; then
/usr/bin/logger -p daemon.$level -t "$name" "$message"
fi
return 0
}
update_DNS_entries()
{
# Remove duplicate values from DNS options if any:
if [ -n "${DNS3}" ] && [[ "${DNS3}" == "${DNS2}" || "${DNS3}" == "${DNS1}" ]]; then
unset DNS3
fi
if [ -n "${DNS2}" ] && [[ "${DNS2}" == "${DNS1}" ]]; then
unset DNS2
fi
# Shift the DNS options if necessary:
if [ -z "${DNS1}" ] && [ -n "${DNS2}" ]; then
DNS1="${DNS2}"
unset DNS2
fi
if [ -z "${DNS2}" ] && [ -n "${DNS3}" ]; then
DNS2="${DNS3}"
unset DNS3
fi
# We need to check DNS1 again in case only DNS3 was set at all:
if [ -z "${DNS1}" ] && [ -n "${DNS2}" ]; then
DNS1="${DNS2}"
unset DNS2
fi
}
SEA-GHOST - SHELL CODING BY SEA-GHOST