#!/bin/sh
#For event hook which only has post call: ipv4/6_change, if_link_up/down
LOGGER="/usr/bin/logger"
IPROUTE2_CONFIG="/etc/iproute2/config"
. /etc/iproute2/script/gateway-mgt-function

Is213Air()
{
	local unique=`/usr/syno/bin/synogetkeyvalue /etc/synoinfo.conf unique`

	echo $unique | grep 213air;
	return $?
}

log_msg()
{
        ${LOGGER} -s -p warn -t "Policy routing table" "$1"
}

routing_table_remove(){
        for ifn in `synonetdtool --get-interface-by-class -4 ethernet | sed -e 's/,/\n/g'`
        do
                if [ "${ifn}" = "${IFNAME}" ]; then
                        synonetdtool --del-policy-route-rule -4 ${IFNAME}_policy ${IFNAME}  #delete v4 rule
                        synonetdtool --disable-route-table  -4 ${IFNAME}
                fi
        done

        for ifn in `synonetdtool --get-interface-by-class -6 ethernet | sed -e 's/,/\n/g'`
        do
                if [ "${ifn}" = "${IFNAME}" ]; then
                       if [ -e ${IPROUTE2_CONFIG}/${IFNAME}-table-rule-v6 ]; then   #delete v6 rule
                               echo ${IPROUTE2_CONFIG}/${IFNAME}-table-rule-v6
                               for rule_name in `grep policy ${IPROUTE2_CONFIG}/${IFNAME}-table-rule-v6 | cut -c2- | sed 's/.$//'`
                               do
                                       synonetdtool --del-policy-route-rule -6 ${rule_name} ${IFNAME}
                                       synonetdtool --disable-route-table  -6 ${IFNAME}
                               done
                       fi
                fi
        done
}
routing_table_build(){
        for ifn in `synonetdtool --get-interface-by-class -4 ethernet | sed -e 's/,/\n/g'`
        do
                if [ "${ifn}" = "${IFNAME}" ]; then
                        local IFCFG_FILE="/etc/sysconfig/network-scripts/ifcfg-${IFNAME}"  #add v4 rule
                        local BOOTPROTO=`get_key_value ${IFCFG_FILE} BOOTPROTO`
                        local GATEWAY_DATABASE="/etc/iproute2/config/gateway_database"
                        if [ "${BOOTPROTO}" = "static" ]; then
                                local IPADDR=`get_key_value ${IFCFG_FILE} IPADDR`
                                local NETMASK=`get_key_value ${IFCFG_FILE} NETMASK`
                        elif [ "${BOOTPROTO}" = "dhcp" ]; then
                                local DHCP_FILE="/etc/dhclient/ipv4/dhcpcd-${IFNAME}.info"
                                local IPADDR=`get_key_value ${DHCP_FILE} IPADDR`
                                local NETMASK=`get_key_value ${DHCP_FILE} NETMASK`
                        elif [ "${BOOTPROTO}" = "none" ]; then
                                continue
                        fi
                        if [ ! -n ${IPADDR} ] || [ ! -n ${NETMASK} ]; then
                                log_msg "Something wrong => IP:${IPADDR}, MASK:${NETMASK}"
                                log_msg "Stop build routing table for interfaces! Do routing table remove to clean eviroment!"
                                exit 1
                                break
                        fi
                        synonetdtool --add-policy-route-rule -4 ${IFNAME}_policy ${IFNAME} ${IPADDR} ${NETMASK} ${IPADDR}
                        GATEWAY=`get_section_key_value ${GATEWAY_DATABASE} ${IFNAME} gateway`
                        if [ "${GATEWAY}" != "NULL" ]; then
                                local enable_multi_gateway=`/bin/get_key_value /etc/synoinfo.conf multi_gateway`
                                if [ "xyes" = "x${enable_multi_gateway}" ]; then
                                        synonetdtool --add-policy-route-rule -4 multi-gateway ${IFNAME} NULL NULL ${GATEWAY}
                                        synonetdtool --enable-multi-gateway
                                fi
                        fi
                        synonetdtool --refresh-route-table -4 ${IFNAME} ${IPADDR}
                fi
        done

        for ifn in `synonetdtool --get-interface-by-class -6 ethernet | sed -e 's/,/\n/g'`
        do
                if [ "${ifn}" = "${IFNAME}" ]; then
                        IPADDR_LIST=""
                        NUM=`/sbin/ifconfig ${IFNAME} | grep inet6 | wc -l`
                        for i in `seq 1 $NUM`
                        do
                                IPADDR_INFO=`/sbin/ip addr show ${IFNAME} | grep inet6 | sed -n ${i}p`
                                SCOPE=`echo ${IPADDR_INFO} | awk -F" " '{print $4}'`
                                IPADDR_MASK=`echo ${IPADDR_INFO} | awk -F" " '{print $2}'`
                                IPADDR=`echo ${IPADDR_MASK} | awk -F"/" '{print $1}'`
                                NETMASK=`echo ${IPADDR_MASK} | awk -F"/" '{print $2}'`
                                echo ${SCOPE} ${IPADDR} ${NETMASK}
                                synonetdtool --add-policy-route-rule -6 ${IFNAME}_policy_v6_${SCOPE}_${i} ${IFNAME} ${IPADDR} ${NETMASK} NULL
                                IPADDR_LIST="${IPADDR_LIST},${IPADDR}"
                        done
                        IPADDR_LIST=`echo $IPADDR_LIST | cut -c2-`
                        echo $IPADDR_LIST
                        synonetdtool --refresh-route-table -6 ${IFNAME} ${IPADDR_LIST}
                        if [ "${GATEWAY}" != "NULL" ]; then
                               local enable_multi_gateway=`/bin/get_key_value /etc/synoinfo.conf multi_gateway`
                               if [ "xyes" = "x${enable_multi_gateway}" ]; then
                                       if [ ! -z "${IPADDR_LIST}" ]; then
                                               synonetdtool --add-policy-route-rule -6 multi-gateway ${IFNAME} NULL NULL ${GATEWAY}
                                               synonetdtool --enable-multi-gateway-v6
                                               synonetdtool --refresh-route-table -6 ${IFNAME} ${IPADDR_LIST}
                                       fi
                               fi
                        fi
                fi
        done
        /sbin/ip route flush cache
}