321 lines
8.3 KiB
Bash
Executable File
321 lines
8.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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# -------------------------------------------------------------------------- #
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# Copyright 2002-2020, OpenNebula Project, OpenNebula Systems #
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# #
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# Licensed under the Apache License, Version 2.0 (the "License"); you may #
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# not use this file except in compliance with the License. You may obtain #
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# a copy of the License at #
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# #
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# http://www.apache.org/licenses/LICENSE-2.0 #
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# #
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# Unless required by applicable law or agreed to in writing, software #
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# distributed under the License is distributed on an "AS IS" BASIS, #
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. #
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# See the License for the specific language governing permissions and #
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# limitations under the License. #
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#--------------------------------------------------------------------------- #
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COMMAND=${1}
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# Gets IP address from a given MAC
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mac2ip() {
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mac=$1
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let ip_a=0x`echo $mac | cut -d: -f 3`
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let ip_b=0x`echo $mac | cut -d: -f 4`
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let ip_c=0x`echo $mac | cut -d: -f 5`
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let ip_d=0x`echo $mac | cut -d: -f 6`
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ip="$ip_a.$ip_b.$ip_c.$ip_d"
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echo $ip
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}
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# Gets the network part of an IP
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get_network() {
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network=$(get_iface_var "NETWORK")
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if [ -z "$network" ]; then
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IFS=. read -r i1 i2 i3 i4 <<< "$IP"
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IFS=. read -r m1 m2 m3 m4 <<< "$(get_mask)"
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network=$(printf "%d.%d.%d.%d\n" "$((i1 & m1))" "$((i2 & m2))" "$((i3 & m3))" "$((i4 & m4))")
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fi
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echo $network
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}
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# Gets the network mask
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get_mask() {
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mask=$(get_iface_var "MASK")
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if [ -z "$mask" ]; then
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mask="255.255.255.0"
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fi
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echo $mask
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}
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# Gets device MTU
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get_mtu() {
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mtu=$(get_iface_var "MTU")
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echo $mtu
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}
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is_gateway() {
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if [ -z "$GATEWAY_IFACE_NUM" ]; then
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true
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else
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[ "$IFACE_NUM" = "$GATEWAY_IFACE_NUM" ]
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fi
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}
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# Gets the network gateway
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get_gateway() {
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if is_gateway; then
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gateway=$(get_iface_var "GATEWAY")
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echo $gateway
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fi
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}
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# Gets the network gateway6
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get_gateway6() {
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if is_gateway; then
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get_iface_var "GATEWAY6"
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fi
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}
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get_ip() {
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ip=$(get_iface_var "IP")
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echo $ip
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}
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get_iface_var() {
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var_name="${UPCASE_DEV}_$1"
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var=$(eval "echo \"\${$var_name}\"")
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echo $var
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}
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gen_iface_conf() {
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cat <<EOT
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NETMASK=$MASK
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IPADDR=$IP
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EOT
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if [ -n "$GATEWAY" ]; then
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if [ "$CONFIG_PATH" = "/etc/sysconfig/network" ]; then
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echo "default $GATEWAY - $DEV ${METRIC:+metric ${METRIC}}" \
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>> "${CONFIG_PATH}/ifroute-${DEV}"
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else
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echo "default via $GATEWAY dev $DEV ${METRIC:+metric ${METRIC}}" \
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>> "${CONFIG_PATH}/route-${DEV}"
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fi
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fi
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if [ -n "$MTU" ]; then
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echo "MTU=$MTU"
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fi
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}
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gen_alias_conf() {
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cat <<EOT
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IPADDR${ALIAS_NUM}="${IP}"
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NETMASK${ALIAS_NUM}="${MASK}"
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EOT
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}
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gen_alias6_conf() {
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if [ "$CONFIG_PATH" = "/etc/sysconfig/network" ]; then
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echo "IPADDR_A6A${ALIAS_NUM}=$IP6/${IP6_PREFIX_LENGTH:-64}"
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else
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IPV6ADDR_SECONDARIES="${IPV6ADDR_SECONDARIES} ${IP6}/${IP6_PREFIX_LENGTH:-64}"
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fi
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if [ -n "$IP6_ULA" ]; then
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if [ "$CONFIG_PATH" = "/etc/sysconfig/network" ]; then
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echo "IPADDR_A6B${ALIAS_NUM}=$IP6_ULA/64"
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else
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IPV6ADDR_SECONDARIES="${IPV6ADDR_SECONDARIES} ${IP6_ULA}/64"
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fi
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fi
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}
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gen_iface6_conf() {
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if [ "$CONFIG_PATH" = "/etc/sysconfig/network" ]; then
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echo "IPADDR_6A=$IP6/${IP6_PREFIX_LENGTH:-64}"
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cat <<EOT >> /etc/sysconfig/network/ifsysctl-$DEV
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net.ipv6.conf.\$SYSCTL_IF.autoconf = 0
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net.ipv6.conf.\$SYSCTL_IF.accept_ra = 0
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EOT
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else
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cat <<EOT
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IPV6INIT=yes
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IPV6ADDR=$IP6/${IP6_PREFIX_LENGTH:-64}
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IPV6_AUTOCONF=no
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EOT
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fi
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if [ -n "$IP6_ULA" ]; then
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if [ "$CONFIG_PATH" = "/etc/sysconfig/network" ]; then
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echo "IPADDR_6B=$IP6_ULA/64"
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else
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IPV6ADDR_SECONDARIES="${IPV6ADDR_SECONDARIES} ${IP6_ULA}/64"
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fi
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fi
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if [ -n "$GATEWAY6" ]; then
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if [ "$CONFIG_PATH" = "/etc/sysconfig/network" ]; then
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echo "default $GATEWAY6 - $DEV" >> /etc/sysconfig/network/ifroute-$DEV
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else
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echo "IPV6_DEFAULTGW=$GATEWAY6"
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fi
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fi
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if [ -n "$MTU" ]; then
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echo "IPV6_MTU=$MTU"
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fi
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}
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get_interface_mac()
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{
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ip link show | awk '/^[0-9]+: [A-Za-z0-9@]+:/ { device=$2; gsub(/:/, "",device); split(device,dev,"@")} /link\/ether/ { print dev[1] " " $2 }'
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}
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get_context_interfaces()
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{
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env | grep -E "^ETH[0-9]+_MAC=" | sed 's/_.*$//' | sort
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}
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get_interface_alias()
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{
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env | grep -E "^ETH${INDEX}_ALIAS[0-9]+_MAC=" | cut -d '_' -f 2 | sort
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}
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get_dev()
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{
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list="$1"
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mac="$2"
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echo "$list" | grep "$mac" | cut -d' ' -f1 | tail -n1
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}
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gen_network_configuration()
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{
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if [ -d /etc/sysconfig/network-scripts ]; then
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CONFIG_PATH=/etc/sysconfig/network-scripts
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elif [ -d /etc/sysconfig/network ]; then
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CONFIG_PATH=/etc/sysconfig/network
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fi
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INTERFACE_MAC=$(get_interface_mac)
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CONTEXT_INTERFACES=$(get_context_interfaces)
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GATEWAY_IFACE_NUM=$(echo "$GATEWAY_IFACE" | sed 's/^ETH//')
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for interface in $CONTEXT_INTERFACES; do
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UPCASE_DEV=$interface
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MAC=$(get_iface_var "MAC")
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DEV=$(get_dev "$INTERFACE_MAC" "$MAC")
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IFACE_NUM=$(echo "$UPCASE_DEV" | sed 's/^ETH//')
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IP=$(get_ip)
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NETWORK=$(get_network)
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MASK=$(get_mask)
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MTU=$(get_mtu)
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GATEWAY=$(get_gateway)
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METRIC=$(get_iface_var "METRIC")
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IP6=$(get_iface_var "IP6")
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[[ -z $IP6 ]] && IP6=$(get_iface_var "IPV6")
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IP6_PREFIX_LENGTH=$(get_iface_var "IP6_PREFIX_LENGTH")
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IP6_ULA=$(get_iface_var "IP6_ULA")
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GATEWAY6=$(get_gateway6)
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# cumulative variable
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IPV6ADDR_SECONDARIES=''
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[ -z "${IP}${IP6}" ] && continue
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[ -z "${DEV}" ] && continue
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(
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rm -f /etc/sysconfig/network-scripts/route-$DEV
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rm -f /etc/sysconfig/network/ifroute-$DEV
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rm -f /etc/sysconfig/network/ifsysctl-$DEV
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cat <<EOT
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DEVICE=$DEV
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BOOTPROTO=static
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NM_CONTROLLED=no
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TYPE=Ethernet
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EOT
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if [ "$CONFIG_PATH" = "/etc/sysconfig/network" ]; then
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echo "STARTMODE=auto"
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else
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echo "ONBOOT=yes"
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fi
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[[ -n $IP ]] && gen_iface_conf
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[[ -n $IP6 ]] && gen_iface6_conf
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INDEX=${interface: -1}
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ALIAS=$(get_interface_alias)
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ALIAS_NUM=0
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for nic_alias in $ALIAS; do
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UPCASE_DEV="ETH${INDEX}_${nic_alias}"
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IP=$(get_ip)
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MASK=$(get_mask)
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IP6=$(get_iface_var "IP6")
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[[ -z $IP6 ]] && IP6=$(get_iface_var "IPV6")
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IP6_PREFIX_LENGTH=$(get_iface_var "IP6_PREFIX_LENGTH")
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IP6_ULA=$(get_iface_var "IP6_ULA")
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EXTERNAL=$(get_iface_var "EXTERNAL")
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EXTERNAL=${EXTERNAL^^}
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DETACH=$(get_iface_var "DETACH")
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if [ -z "${DETACH}" ]; then
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if [ -z "${EXTERNAL}" ] || [ "$EXTERNAL" = "NO" ]; then
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[ -n "${IP}" ] && gen_alias_conf
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[ -n "${IP6}" ] && gen_alias6_conf
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if [ -n "${IP}${IP6}" ]; then
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ALIAS_NUM=$((ALIAS_NUM + 1))
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fi
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fi
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fi
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done
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# on Red Hats, we need just a single configuration
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# entry with all additional IPv6 addresses
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if [ -n "${IPV6ADDR_SECONDARIES}" ]; then
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echo "IPV6ADDR_SECONDARIES='${IPV6ADDR_SECONDARIES## }'"
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fi
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) > ${CONFIG_PATH}/ifcfg-${DEV}
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ifup ${DEV}
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done
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}
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configure_network()
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{
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gen_network_configuration
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if [ "${COMMAND}" = 'reconfigure' ]; then
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service network restart
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fi
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sleep 2
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}
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[ -z "$(env | cut -d= -f1 | grep -E '^ETH[0-9]+_IPV*6*')" ] && exit 0
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configure_network
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