#!/bin/bash
# IBM(c) 2014 EPL license http://www.eclipse.org/legal/epl-v10.html
# Internal script used by confignics only.
# It configs the Ethernet adpaters on the node

# The extra parameter NICEXTRAPARAMS are specified in the nics.nicextraparams. 
# It has the following format:
#  eth2!MTU=65520 somethingelse=yes,eth3!MTU=1500
# This function gets the values for the given nic, 
# It stores each parameter values in a separate array.


# This function parse the NICEXTRAPARAMS into an array. 
# Each arry element contains all the extra params for an ip
# For example:
#    NICEXTRAPARAMS="eth0!MTU=1500 sonething=x|MTU=1460,ib0!MTU=65520 CONNECTED_MODE=yes".
# After calling this function with eth0:
#    array_extra_param[0]="MTU=1500 sonething=x"
#    array_extra_param[1]="MTU=1460"
function get_nic_extra_params() {
    nic=$1
    if [ ! "$NICEXTRAPARAMS" ];then
        return
    fi
    old_ifs=$IFS
    IFS=$','
    array_conf_temp=($NICEXTRAPARAMS)
    IFS=$old_ifs
    #echo "NICEXTRA=$NICEXTRAPARAMS"

    i=0
    while [ $i -lt ${#array_conf_temp[@]} ]
    do
        token="${array_conf_temp[$i]}"
        D=
        if echo "$token" | grep "!"; then
            D="!"
        else
            D=":"
        fi
        key=`echo "$token" | cut -d"$D" -f 1`
        #echo "key=$key nic=$nic"
		if [ "$key" == "$nic" ]; then
			str_temp_value=`echo "$token" | cut -d"$D" -f 2`
            #echo "token=$token, str_temp_value=$str_temp_value"
			old_ifs=$IFS
			IFS=$'|'
			array_nic_params=($str_temp_value)
			IFS=$old_ifs
			return
		fi
		i=$((i+1))
    done
}

# This functions parse the extra parameters for an ip address of a nic
# Input is like this:
#     MTU=65520 something=yes
# After the function is called:
#     array_extra_param_names[0]="MTU"
#     array_extra_param_values[0]="65520" 
#     array_extra_param_names[1]="something"
#     array_extra_param_values[0]="yes" 
#     
function parse_nic_extra_params() {
    str_extra=$1
   
    unset array_extra_param_names
    unset array_extra_param_values

	old_ifs=$IFS
	IFS=$' '
	params_temp=($str_extra)
	IFS=$old_ifs
	k=0
	while [ $k -lt ${#params_temp[@]} ]
	do
		token2="${params_temp[$k]}"
		array_extra_param_names[$k]=`echo "$token2" | cut -d'=' -f 1`
		array_extra_param_values[$k]=`echo "$token2" | cut -d'=' -f 2`	
		k=$((k+1))
	done
}


if [ "$(uname -s|tr 'A-Z' 'a-z')" = "linux" ];then
   str_dir_name=`dirname $0`
   . $str_dir_name/xcatlib.sh
fi

function configipv4(){
    str_if_name=$1
    str_v4ip=$2
    str_v4net=$3
    str_v4mask=$4
    num_v4num=$5
    str_extra_params=$6

    #parse the extra parameters
    if [ "$str_extra_params" != "$str_default_token" ]; then
		parse_nic_extra_params "$str_extra_params"
	fi	
    
    if [ "$str_os_type" = "sles" ];then
        str_conf_file="/etc/sysconfig/network/ifcfg-${str_if_name}"
        if [ $num_v4num -eq 0 ];then
            echo "DEVICE=${str_if_name}" > $str_conf_file
            echo "BOOTPROTO=static" >> $str_conf_file
            echo "IPADDR=${str_v4ip}" >> $str_conf_file
            echo "NETMASK=${str_v4mask}" >> $str_conf_file
            echo "NETWORK=${str_v4net}" >> $str_conf_file
            echo "STARTMODE=onboot" >> $str_conf_file
            echo "USERCONTROL=no" >> $str_conf_file
            echo "_nm_name=static-0" >> $str_conf_file

			#add extra params
			i=0
			while [ $i -lt ${#array_extra_param_names[@]} ]
			do
				name="${array_extra_param_names[$i]}"
				value="${array_extra_param_values[$i]}"
                echo "  $i: name=$name value=$value"
				echo "${name}=${value}" >> $str_conf_file
				i=$((i+1))
			done		
        else
            echo "IPADDR_${num_v4num}=${str_v4ip}" >> $str_conf_file
            echo "NETMASK_${num_v4num}=${str_v4mask}" >> $str_conf_file
            echo "NETWORK_${num_v4num}=${str_v4net}" >> $str_conf_file
            echo "LABEL_${num_v4num}=${num_v4num}" >> $str_conf_file

			#add extra params
			i=0
			while [ $i -lt ${#array_extra_param_names[@]} ]
			do
				name="${array_extra_param_names[$i]}"
				value="${array_extra_param_values[$i]}"
                echo "  $i: name=$name value=$value"
				echo "${name}=${value}" >> $str_conf_file
				i=$((i+1))
			done		
        fi

        if [[ ${str_if_name} == [a-zA-Z0-9]*.[0-9]* ]]; then
            echo "VLAN=yes" >> $str_conf_file
        fi
    #debian ubuntu
    elif [ "$str_os_type" = "debian" ];then
        str_conf_file="/etc/network/interfaces.d/${str_if_name}"
        if [ $num_v4num -eq 0 ];then
            echo "auto ${str_if_name}" > $str_conf_file
            echo "iface ${str_if_name} inet static" >> $str_conf_file
        else
            echo "auto ${str_if_name}:${num_v4num}" >> $str_conf_file
            echo "iface ${str_if_name}:${num_v4num} inet static" >> $str_conf_file
        fi
        echo "  address ${str_v4ip}" >> $str_conf_file
        echo "  netmask ${str_v4mask}" >> $str_conf_file
        echo "  network ${str_v4net}" >> $str_conf_file

		#add extra params
		i=0
		while [ $i -lt ${#array_extra_param_names[@]} ]
		do
			name="${array_extra_param_names[$i]}"
			value="${array_extra_param_values[$i]}"
            echo "  $i: name=$name value=$value"
			echo "  ${name} ${value}" >> $str_conf_file
			i=$((i+1))
		done		
        if [[ ${str_if_name} == [a-zA-Z0-9]*.[0-9]* ]]; then
            parent_device=`echo ${str_if_name} | sed -e 's/\([a-zA-Z0-9]*\)\.[0-9]*/\1/g'`
            echo "  vlan-raw-device ${parent_device}" >> $str_conf_file
        fi
    else
        # Write the info to the ifcfg file for redhat
        str_conf_file=""
        if [ $num_v4num -eq 0 ];then
            str_conf_file="/etc/sysconfig/network-scripts/ifcfg-${str_if_name}"
            echo "DEVICE=${str_if_name}" > $str_conf_file
        else
            str_conf_file="/etc/sysconfig/network-scripts/ifcfg-${str_if_name}:${num_v4num}"
            echo "DEVICE=${str_if_name}:${num_v4num}" > $str_conf_file
        fi


        echo "BOOTPROTO=static" >> $str_conf_file
        echo "NM_CONTROLLED=no" >> $str_conf_file
        echo "IPADDR=${str_v4ip}" >> $str_conf_file
        echo "NETMASK=${str_v4mask}" >> $str_conf_file
        echo "ONBOOT=yes" >> $str_conf_file
        if [[ ${str_if_name} == [a-zA-Z0-9]*.[0-9]* ]]; then
            echo "VLAN=yes" >> $str_conf_file
        fi

		#add extra params
		i=0
		while [ $i -lt ${#array_extra_param_names[@]} ]
		do
			name="${array_extra_param_names[$i]}"
			value="${array_extra_param_values[$i]}"
            echo "  $i: name=$name value=$value"
			echo "${name}=${value}" >> $str_conf_file
			i=$((i+1))
		done		
    fi
}

configipv6(){
    str_if_name=$1
    str_v6ip=$2
    str_v6net=$3
    str_v6prefix=$4
    num_v6num=$5
    num_v4num=$6
    str_v6gateway=$7
	str_extra_params=$8

    #parse the extra parameters
    if [ "$str_extra_params" != "$str_default_token" ]; then
		parse_nic_extra_params "$str_extra_params"
	fi	

    #remove the prefix length from the subnet
    str_v6net=`echo $str_v6net | cut -d"/" -f 1`

    #remove the "/" from mask
    str_v6prefix=`echo $str_v6prefix | sed 's/\///'`

    if [ "$str_os_type" = "sles" ];then
        str_conf_file="/etc/sysconfig/network/ifcfg-${str_if_name}"
        if [ $num_v4num -eq 0 -a $num_v6num -eq 0 ];then
            echo "DEVICE=$str_if_name" > $str_conf_file
            echo "BOOTPROTO=static" >> $str_conf_file
            echo "NM_CONTROLLED=no" >> $str_conf_file
            echo "STARTMODE=onboot" >> $str_conf_file
        fi
        echo "LABEL_ipv6${num_v6num}=ipv6$num_v6num" >> $str_conf_file
        echo "IPADDR_ipv6${num_v6num}=${str_v6ip}" >> $str_conf_file
        echo "PREFIXLEN_ipv6${num_v6num}=${str_v6prefix}" >> $str_conf_file
        if [ "$str_v6gateway" != "$str_default_token" ] -a [ `echo $str_v6gateway | grep -v 'xcatmaster'` ];then
            grep -E "default[:space:]+${str_v6gateway}[:space:]+" /etc/sysconfig/network/routes 2>&1 1>/dev/null
            if [ $? -ne 0 ];then
                echo "default $str_v6gateway - -" >> /etc/sysconfig/network/routes
            fi
        fi 

        #add extra params
		i=0
		while [ $i -lt ${#array_extra_param_names[@]} ]
		do
			name="${array_extra_param_names[$i]}"
			value="${array_extra_param_values[$i]}"
            echo "  $i: name=$name value=$value"
			echo "${name}=${value}" >> $str_conf_file
			i=$((i+1))
		done		
    elif [ "$str_os_type" = "debian" ];then
        #debian or ubuntu
        str_conf_file="/etc/network/interfaces.d/${str_if_name}"
        if [ $num_v4num -eq 0 -a $num_v6num -eq 0 ];then
            echo "auto ${str_if_name}" > $str_conf_file
        fi
        if [ $num_v6num -eq 0 ];then
            echo "pre-up modprobe ipv6" >> $str_conf_file
            echo "iface ${str_if_name} inet6 static" >> $str_conf_file
            echo "  address ${str_v6ip}" >> $str_conf_file
            echo "  netmask ${str_v6prefix}" >> $str_conf_file
            if [ "$str_v6gateway" != "$str_default_token" ]; then
                echo "  gateway ${str_v6gateway}" >> $str_conf_file
            fi

            #add extra params
			i=0
			while [ $i -lt ${#array_extra_param_names[@]} ]
			do
				name="${array_extra_param_names[$i]}"
				value="${array_extra_param_values[$i]}"
				echo "  $i: name=$name value=$value"
				echo "  ${name} ${value}" >> $str_conf_file
				i=$((i+1))
			done		
        else
            echo "  post-up /sbin/ifconfig ${str_if_name} inet6 add ${str_v6ip}/${str_v6prefix}" >> $str_conf_file
            echo "  pre-down /sbin/ifconfig ${str_if_name} inet6 del ${str_v6ip}/${str_v6prefix}" >> $str_conf_file
        fi
    else
        #redhat
        str_conf_file="/etc/sysconfig/network-scripts/ifcfg-${str_if_name}"
        if [ $num_v4num -eq 0 -a $num_v6num -eq 0 ];then
            echo "DEVICE=$str_if_name" > $str_conf_file
            echo "BOOTPROTO=static" >> $str_conf_file
            echo "NM_CONTROLLED=no" >> $str_conf_file
            echo "ONBOOT=yes" >> $str_conf_file
        fi
        if [ $num_v6num -eq 0 ];then
            echo "IPV6INIT=yes" >> $str_conf_file
            echo "IPV6ADDR=${str_v6ip}/${str_v6prefix}" >> $str_conf_file
        else
            echo "IPV6ADDR_SECONDARIES=${str_v6ip}/${str_v6prefix}" >> $str_conf_file
        fi
        if [ "$str_v6gateway" != "$str_default_token" ] -a [ `echo $str_v6gateway | grep -v 'xcatmaster'` ];then
            echo "IPV6_DEFAULTGW=$str_v6gateway" >> $str_conf_file
        fi

        #add extra params
		i=0
		while [ $i -lt ${#array_extra_param_names[@]} ]
		do
			name="${array_extra_param_names[$i]}"
			value="${array_extra_param_values[$i]}"
            echo "  $i: name=$name value=$value"
			echo "${name}=${value}" >> $str_conf_file
			i=$((i+1))
		done		
    fi
}

#delete all configuration file(s) on linux
function delete_nic_config_files(){
    str_temp_name=$1
    #delete the configuration files
    #delete the configuration history
    if [ "$str_os_type" = "debian" ];then
        rm -f /etc/network/interfaces.d/$str_temp_name 2>/dev/null
        sed -i "/${str_temp_name}/d" /etc/network/xcat_history_important
    elif [ "$str_os_type" = "sles" ];then
        rm -f /etc/sysconfig/network/ifcfg-${str_temp_name} 2>/dev/null
        sed -i "/${str_temp_name}/d" /etc/sysconfig/network/xcat_history_important
    else
        rm -f /etc/sysconfig/network-scripts/ifcfg-${str_temp_name} 2>/dev/null
        rm -f /etc/sysconfig/network-scripts/ifcfg-${str_temp_name}:* 2>/dev/null
        sed -i "/${str_temp_name}/d" /etc/sysconfig/network-scripts/xcat_history_important
    fi
}

function add_ip_temporary(){
    local str_ip_prefix=$1
    local str_temp_name=$2
    local str_ip=`echo $str_ip_prefix | awk -F'_' '{print $1}'`
    local str_mask=`echo $str_ip_prefix | awk -F'_' '{print $2}'`

    if [ "$str_os_type" = "aix" ];then
        echo $str_ip | grep ":" > /dev/null
        #ipv6
        if [ $? -eq 0 ];then
            lsattr -El $str_temp_name | grep netaddr6 | awk '{print $2}' | grep ":"
            if [ $? -ne 0 ];then
                chdev -l $str_temp_name -a netaddr6=$str_ip -a prefixlen=$str_mask
            else
                chdev -l $str_temp_name -a alias6=${str_ip}/${str_mask}
            fi
        #ipv4
        else
            lsattr -El $str_temp_name | grep netaddr | awk '{print $2}' | grep '\.'
            if [ $? -ne 0 ];then
                chdev -l $str_temp_name -a netaddr=${str_ip} -a netmask=${str_mask}
            else
                chdev -l $str_temp_name -a alias4=${str_ip},${str_mask}
            fi
        fi
    else
        echo $str_ip | grep ":" > /dev/null
        #ipv6
        if [ $? = 0 ];then
            lsmod |grep -w 'ipv6'
            if [ $? -ne 0 ];then
                modprobe ipv6
            fi
            ip addr add ${str_ip}/${str_mask} dev $str_temp_name
        #ipv4
        else 
            str_label=''
            ip addr show dev $str_temp_name | grep inet | grep "global" | grep -v ':' | grep "${str_temp_name}"
            if [ $? -eq 0 ];then
                for num_i in {1..1000}
                do
                    ip addr show dev $str_temp_name | grep inet | grep "global" | grep ":${num_i}"
                    if [ $? -ne 0 ];then
                        str_label=${str_nic_name}:${num_i}
                        break
                    fi
                done
            else
                str_label=$str_nic_name
            fi

            str_bcase=$(v4calcbcase $str_ip $str_mask)
            #the label is ready, add the ip address directly
            ip addr add $str_ip/${str_mask} broadcast $str_bcase dev $str_nic_name scope global label $str_label
        fi
    fi
}


declare -a array_nic_params
declare -a array_extra_param_names
declare -a array_extra_param_values

# This token is used for the value of an attributes that has not been assigned any value.
str_default_token="default"


str_nic_name=''
str_os_type=`uname | tr 'A-Z' 'a-z'`
str_cfg_dir=''
str_temp=''
if [ "$str_os_type" = "linux" ];then
    str_temp=`echo $OSVER | grep -E '(sles|suse)'`
    if [ -f "/etc/debian_version" ];then
        debianpreconf
        str_os_type="debian"
        str_cfg_dir="/etc/network/"
    elif [ -f "/etc/SuSE-release" -o -n "$str_temp" ];then
        str_os_type="sles"
        str_cfg_dir="/etc/sysconfig/network/"
    else
        str_os_type="redhat"
        str_cfg_dir="/etc/sysconfig/network-scripts/"
    fi
else
    echo "configeth dose not support AIX in this build"
    exit 0

fi


logger -t xcat -p local4.err "configeth: os type: $str_os_type"
echo "configeth on $NODE: os type: $str_os_type"
if [ "$1" = "-r" ];then
    if [ $# -ne 2 ];then
        logger -t xcat -p local4.err "configeth: remove nic, but the nic name is missed"
        echo "configeth on $NODE: remove nic, but the nic name is missed"
        exit 1
    fi
    str_nic_name=$2
    logger -t xcat -p local4.err "configeth: remove nic $str_nic_name"
    echo "configeth on $NODE: remove nic $str_nic_name"

    if [ "$str_os_type" = "aix" ];then
        old_ifs=$IFS
        IFS=$'\n'
        str_temp=`lsattr -El $str_nic_name | grep alias4 | awk '{print $2}'`
        array_alias4_temp=($str_temp)
        IFS=$old_ifs
        for str_ip_alias4 in $str_temp
        do
            #the alias format should be ipaddr,netmask
            echo $str_ip_alias4 | grep -E ,
            if [ $? -eq 0 ];then
                chdev -l $str_nic_name -a delalias4=$str_ip_alias4
            fi
        done
        str_temp=`lsattr -El $str_nic_name | grep alias6 | awk '{print $2}'`
        old_ifs=$IFS
        IFS=$'\n'
        array_alias6_temp=($str_temp)
        IFS=$old_ifs
        for str_ip_alias6 in ${array_alias6_temp[@]}
        do
            echo $str_ip_alias6 | grep -E /
            if [ $? -eq 0 ];then
                chdev -l $str_nic_name -a delalias6=$str_ip_alias6
            fi
        done
        logger -t xcat -p local4.err "configeth run command: chdev -l $str_nic_name -a netaddr='' -a netmask='' -a netaddr6='' -a prefixlen='' -a state=down"
        echo "configeth on $NODE run command: chdev -l $str_nic_name -a netaddr='' -a netmask='' -a netaddr6='' -a prefixlen='' -a state=down"
        chdev -l $str_nic_name -a netaddr='' -a netmask='' -a netaddr6='' -a prefixlen='' -a state=down
    else
        #shut down the nic if it is on 
        ip link show $str_nic_name | grep -i ',up'
        if [ $? -eq 0 ];then
            if [ "$str_os_type" = "debian" ];then
                ifdown --force $str_nic_name
            else
                ifdown $str_nic_name
            fi
        fi

        #delete the configuration files
        delete_nic_config_files $str_nic_name
    fi
    exit 0
elif [ "$1" = "-s" ];then
    if [ $# -lt 2 ];then
        logger -t xcat -p local4.err "configeth: config install nic, but the nic name is missed"
        echo "configeth on $NODE: config install nic, but the nic name is missed"
        exit 1
    fi
    str_inst_nic=$2
    str_inst_ip=''
    str_inst_mask=''
    str_inst_gateway=''

    if [ "$str_os_type" = "aix" ];then
        logger -t xcat -p local4.err "configeth: aix does not support -s flag"
        echo "configeth on $NODE: aix does not support -s flag"
        exit 0
    elif [ -f "/etc/debian_version" ];then
        str_lease_file="/var/lib/dhcp/dhclient."$str_inst_nic".leases"
        if [ -e "$str_lease_file" ];then
            str_inst_ip=`grep fixed-address $str_lease_file | tail -n 1 | awk '{print $2}' | sed 's/;$//'`
            str_inst_mask=`grep subnet-mask $str_lease_file | tail -n 1 | awk '{print $3}' | sed 's/;$//'`
            str_inst_gateway=`grep routers $str_lease_file | tail -n 1 | awk '{print $3}' | sed 's/;$//'`
        fi
    elif [ -f "/etc/SuSE-release" ];then
       str_lease_file="/var/lib/dhcpcd/dhcpcd-"$str_inst_nic".info"
       if [ -e "$str_lease_file" ];then
           str_inst_ip=`grep IPADDR $str_lease_file | tail -n 1 | awk -F'=' '{print $2}' | sed "s/'//g"`
           str_inst_mask=`grep NETMASK $str_lease_file | tail -n 1 | awk -F'=' '{print $2}' | sed "s/'//g"`
           str_inst_gateway=`grep GATEWAYS $str_lease_file | tail -n 1 | awk -F'=' '{print $2}' | sed "s/'//g"`
       fi
    else
        str_lease_file=`ls /var/lib/dhclient/*$str_inst_nic* | grep leases`
        if [ -e "$str_lease_file" ];then
            str_inst_ip=`grep fixed-address $str_lease_file | tail -n 1 | awk '{print $2}' | sed 's/;$//'`
            str_inst_mask=`grep subnet-mask $str_lease_file | tail -n 1 | awk '{print $3}' | sed 's/;$//'`
            str_inst_gateway=`grep routers $str_lease_file | tail -n 1 | awk '{print $3}' | sed 's/;$//'`
        fi
    fi
    if [ -n "$MACADDRESS" ];then
        str_inst_mac=$MACADDRESS
    else
        #str_inst_mac=`ifconfig $str_inst_nic | grep HWaddr | awk -F'HWaddr' '{print $2}' | sed 's/\s*//'`
        str_inst_mac=`ip link show $netdev | grep ether | awk '{print $2}'`
    fi

    if [ -z "$str_inst_ip" -o -z "$str_inst_mask" ];then
        logger -t xcat -p local4.err "configeth: config install nic, can not find the information from lease file, return."
        echo "configeth on $NODE: config install nic, can not find information from dhcp lease file, return."
        exit 0
    fi

	#get extra configration parameters for each nic
    #echo "str_inst_nic=$str_inst_nic, str_inst_ip=$str_inst_ip"
	get_nic_extra_params $str_inst_nic
	if [ ${#array_nic_params[@]} -gt 0 ]; then
		str_extra_params=${array_nic_params[0]}
		parse_nic_extra_params "$str_extra_params"
	fi 

    if [ -f "/etc/debian_version" ];then
        str_conf_file="/etc/network/interfaces.d/${str_inst_nic}"
        echo "auto ${str_inst_nic}" > $str_conf_file
        echo "iface ${str_inst_nic} inet static" >> $str_conf_file
        echo "  address ${str_inst_ip}" >> $str_conf_file
        echo "  netmask ${str_inst_mask}" >> $str_conf_file
        echo "  hwaddress ether ${str_inst_mac}" >> $str_conf_file
        if [ -n "$str_inst_gateway" ];then
            echo "  gateway $str_inst_gateway" >> $str_conf_file
        fi
		#add extra params
		i=0
		while [ $i -lt ${#array_extra_param_names[@]} ]
		do
			name="${array_extra_param_names[$i]}"
			value="${array_extra_param_values[$i]}"
            echo "  $i: name=$name value=$value"
			echo "  ${name} ${value}" >> $str_conf_file
			i=$((i+1))
		done		

        hostname $NODE
        echo $NODE > /etc/hostname
    elif [ -f "/etc/SuSE-release" ];then
        str_conf_file="/etc/sysconfig/network/ifcfg-${str_inst_nic}"
        echo "DEVICE=${str_inst_nic}" > $str_conf_file
        echo "BOOTPROTO=static" >> $str_conf_file
        echo "IPADDR=${str_inst_ip}" >> $str_conf_file
        echo "NETMASK=${str_inst_mask}" >> $str_conf_file
        echo "HWADDR=${str_inst_mac}" >> $str_conf_file
        echo "STARTMODE=onboot" >> $str_conf_file
        if [ -n "$str_inst_gateway" ];then
            grep -i "default" /etc/sysconfig/network/routes
            if [ $? -eq 0 ];then
                sed -i "s/.*default.*/default ${str_inst_gateway} - -/i" /etc/sysconfig/network/routes
            else
                echo "default ${str_inst_gateway} - -" >> /etc/sysconfig/network/routes
            fi
        fi

		#add extra params
		i=0
		while [ $i -lt ${#array_extra_param_names[@]} ]
		do
			name="${array_extra_param_names[$i]}"
			value="${array_extra_param_values[$i]}"
            echo "  $i: name=$name value=$value"
			echo "${name}=${value}" >> $str_conf_file
			i=$((i+1))
		done		


        hostname $NODE
        echo $NODE > /etc/HOSTNAME
    else
        str_conf_file="/etc/sysconfig/network-scripts/ifcfg-${str_inst_nic}"
        echo "DEVICE=${str_inst_nic}" > $str_conf_file
        echo "IPADDR=${str_inst_ip}" >> $str_conf_file
        echo "NETMASK=${str_inst_mask}" >> $str_conf_file
        echo "BOOTPROTO=static" >> $str_conf_file
        echo "ONBOOT=yes" >> $str_conf_file
        echo "HWADDR=${str_inst_mac}" >> $str_conf_file
        if [ -n "$str_inst_gateway" ];then
            grep -i "GATEWAY" /etc/sysconfig/network
            if [ $? -eq 0 ];then
                sed -i "s/.*GATEWAY.*/GATEWAY=${str_inst_gateway}/i" /etc/sysconfig/network
            else
                echo "GATEWAY=${str_inst_gateway}" >> /etc/sysconfig/network
            fi
        fi

		#add extra params
		i=0
		while [ $i -lt ${#array_extra_param_names[@]} ]
		do
			name="${array_extra_param_names[$i]}"
			value="${array_extra_param_values[$i]}"
            echo "  $i: name=$name value=$value"
			echo "${name}=${value}" >> $str_conf_file
			i=$((i+1))
		done		

        hostname $NODE
        if [ -f "/etc/hostname" ]; then
            echo $NODE > /etc/hostname
        else
            grep -i "HOSTNAME" /etc/sysconfig/network
            if [ $? -eq 0 ];then
                sed -i "s/.*HOSTNAME.*/HOSTNAME=${NODE}/i" /etc/sysconfig/network
            else
                echo "HOSTNAME=${NODE}" >> /etc/sysconfig/network
            fi
        fi
    fi
    exit 0
fi

#main prcess
#1. get all ip,netmask,subnet,gateway for the nic
#2. get current configurations
#3. delete the undefined ips
#4. add the new defined ips
#5. no modification, return directly
#3. on linux modify the configuration files
if [ $# -ne 3 ];then
    logger -t xcat -p local4.err "configeth: paramters error currently is $@"
    echo "configeth on $NODE: paramters error currently is $@"
    exit 1
fi
str_nic_name=$1
old_ifs=$IFS
IFS=$'|'
array_nic_ips=($2)
array_nic_networks=($3)
IFS=$old_ifs

if [ "$str_os_type" = "aix" ];then
    str_temp=`lsattr -El $str_nic_name`
else
    str_temp=`ip addr show dev $str_nic_name`
fi

logger -t xcat -p local4.err "configeth: old configuration: $str_temp"
echo "configeth on $NODE: old configuration: $str_temp"


#parse the networks tables contains
declare -a array_ip_mask
declare -a array_ip_status
declare -a array_nic_network_config
declare -a array_nic_subnet
declare -a array_nic_netmask
declare -a array_nic_gateway

#get extra configration parameters for each nic
get_nic_extra_params $str_nic_name
j=0
while [ $j -lt ${#array_nic_params[@]} ]
do
	token1="${array_nic_params[$j]}"
	echo "array_nic_params $j=$token1"
	j=$((j+1))
done


str_ip_mask_pair=''
num_index=1
while [ $num_index -le $NETWORKS_LINES ];do
    eval str_temp=\$NETWORKS_LINE$num_index
    str_temp_name=`echo $str_temp | awk -F'netname=' '{print $2}' | awk -F'|' '{print $1}'`
    num_i=0
    while [ $num_i -lt ${#array_nic_ips[*]} ]
    do
        if [ "$str_temp_name" = "${array_nic_networks[$num_i]}" ];then
            array_nic_network_config[$num_i]=$str_temp
            break
        fi
        num_i=$((num_i+1))
    done
    num_index=$((num_index+1))
done

logger -t xcat -p local4.err "configeth: new configuration"
echo "configeth on $NODE: new configuration"
num_index=0
str_ipv6_gateway=''
while [ $num_index -lt ${#array_nic_ips[*]} ];do
    #get the ip address and network name
    str_ip=${array_nic_ips[$num_index]}
    str_netname=${array_nic_networks[$num_index]}
    if [ ! $str_netname ];then
        logger -t xcat -p local4.err "configeth: Network name is not defined on $str_nic_name for $str_ip."
        echo "configeth on $NODE: Network name is not defined on $str_nic_name for $str_ip."
        num_index=$((num_index+1))
        continue
    fi

    #find out the network definition 
    str_line=${array_nic_network_config[$num_index]}
    if [ ! $str_line ];then
        logger -t xcat -p local4.err "configeth: Network object $str_netname is not defined."
        echo "configeth on $NODE: Network object $str_netname is not defined."
        num_index=$((num_index+1))
        continue
    fi

    #fetch the subnet and netmask in networks definition
    str_subnet=`echo $str_line | awk -F'net=' '{print $2}' | awk -F'|' '{print $1}'`
    str_netmask=`echo $str_line | awk -F'mask=' '{print $2}' | awk -F'|' '{print $1}' | sed 's:^/::'`
    str_gateway=`echo $str_line | awk -F'gateway=' '{print $2}' | awk -F'|' '{print $1}'`
    
    if [ ! $str_subnet -o ! $str_netmask ];then
        logger -t xcat -p local4.err "configeth: subnet or netmask is not defined in network object $str_netname."
        echo "configeth on $NODE: subnet or netmask is not defined in network object $str_netname."
        num_index=$((num_index+1))
        continue
    fi

    array_nic_subnet[$num_index]=$str_subnet
    array_nic_netmask[$num_index]=$str_netmask
    array_nic_gateway[$num_index]=$str_gateway
    echo "$str_gateway" | grep ':'
    if [ $? -eq 0 ];then
        str_ipv6_gateway=$str_gateway
    fi
    logger -t xcat -p local4.err "configeth: $str_ip, $str_subnet, $str_netmask, $str_gateway"
    echo "       $str_ip, $str_subnet, $str_netmask, $str_gateway"
    #on linux, call sub rutine to define ipv4 or ipv6 address for the persitent configuration
    if [ `echo $str_ip | grep -E '^([0-9]{1,3}\.){3}[0-9]{1,3}$'` ];then
        if [ "$str_os_type" = "aix" ];then
            hashset hash_new_config "${str_ip}_${str_netmask}" "new"
            str_ip_mask_pair=$str_ip_mask_pair"${str_ip}_${str_netmask} "
        else
            str_prefix=$(v4mask2prefix $str_netmask)
            hashset hash_new_config "${str_ip}_${str_prefix}" "new"
            str_ip_mask_pair=$str_ip_mask_pair"${str_ip}_${str_prefix} "
        fi
    elif [ `echo $str_ip | grep -E ":"` ];then
        num_ipv6_index=$((num_ipv6_index+1))
        hashset hash_new_config "${str_ip}_${str_netmask}" "new"
        str_ip_mask_pair=$str_ip_mask_pair"${str_ip}_${str_netmask} "
    else
        logger -t xcat -p local4.err "configeth: the ipaddress( $str_ip ) for $str_nic_name is invalid."
        echo "configeth on $NODE: the ipaddress( $str_ip ) for $str_nic_name is invalid."
    fi
    num_index=$((num_index+1))
done

str_ip_mask_pair=`echo "$str_ip_mask_pair" | sed -e 's/ $//'`

str_old_conf=''
if [ "$str_os_type" = "aix" ];then
    #check the netaddr
    str_history=`lsattr -El $str_nic_name | grep netaddr | awk '{print $2}' | grep '\.'`
    if [ $? -eq 0 ];then
        str_temp=`lsattr -El $str_nic_name | grep netmask | awk '{print $2}'`
        str_old_ip=${str_history}"_"${str_temp}
        str_ip_status=$(hashget hash_new_config $str_old_ip)
        if [ -n "$str_ip_status" ];then
            hashset hash_new_config $str_old_ip "old"
        else
            chdev -l $str_nic_name -a netaddr='' -a netmask=''
            logger -t xcat -p local4.err "configeth: delete undefined ip address $str_old_ip"
            echo "configeth on $NODE: delete undefined ip address $str_old_ip"
        fi
    fi

    #check the netaddr6
    str_history=`lsattr -El $str_nic_name | grep netaddr6 | awk '{print $2}' | grep ':'`
    if [ $? -eq 0 ];then
        str_temp=`lsattr -El $str_nic_name | grep prefixlen | awk '{print $2}'`
        str_old_ip=${str_history}"_"${str_temp}
        str_ip_status=$(hashget hash_new_config $str_old_ip)
        if [ -n "$str_ip_status" ];then
            hashset hash_new_config $str_old_ip "old"
        else
            chdev -l $str_nic_name -a netaddr6='' -a prefixlen=''
            logger -t xcat -p local4.err "configeth: delete undefined ipv6 address $str_old_ip"
            echo "configeth on $NODE: delete undefined ipv6 address $str_old_ip"
        fi
    fi
    
    #check the ipv4 alias
    str_history=`lsattr -El $str_nic_name | grep alias4 | awk '{print $2}' | grep '\.'`
    if [ $? -eq 0 ];then
        old_ifs=$IFS
        IFS=$'\n'
        array_alias4_temp=($str_history)
        IFS=$old_ifs
        for str_temp in ${array_alias4_temp[@]}
        do
            str_old_ip=`echo $str_temp | tr ',' '_'`
            str_ip_staus=$(hashget hash_new_config $str_old_ip)
            if [ -n "$str_ip_staus" ];then
                hashset hash_new_config $str_old_ip "old"
            else
                chdev -l $str_nic_name -a delalias4=$str_temp
                
            fi
        done
    fi

    #check the ipv6 alias
    str_history=`lsattr -El $str_nic_name | grep alias6 | awk '{print $2}' | grep '\.'`
    if [ $? -eq 0 ];then
        old_ifs=$IFS
        IFS=$'\n'
        array_alias6_temp=($str_history)
        IFS=$old_ifs
        for str_temp in ${array_alias6_temp[@]}
        do
            str_old_ip=`$str_temp | tr '/' '_'`
            str_ip_staus=$(hashget hash_new_config $str_old_ip)
            if [ -n "$str_ip_staus" ];then
                hashset hash_new_config $str_old_ip "old"
            else
                chdev -l $str_nic_name -a delalias6=$str_temp
            fi
        done
    fi

    #add the new configured ip address
    old_ifs=$IFS
    IFS=$' '
    array_ip_mask_temp=($str_ip_mask_pair)
    IFS=$old_ifs
    for str_new_ip in ${array_ip_mask_temp[@]}
    do
        str_ip_status=$(hashget hash_new_config $str_new_ip)
        if [ "$str_ip_status" = "new" ];then
            logger -t xcat -p local4.err "configeth: add $str_new_ip for $str_nic_name temporary."
            echo "configeth on $NODE: add $str_new_ip for $str_nic_name temporary."
            add_ip_temporary $str_new_ip $str_nic_name
        fi
    done
    
    #change the nic status to up
    chdev -l $str_nic_name -a state=up
else
    str_history=''
    bool_restart_flag=0
    bool_modify_flag=0
    str_nic_status='down'
    str_his_file=${str_cfg_dir}xcat_history_important

    str_history=`ip addr show dev $str_nic_name | grep inet | grep -iv dynamic | grep -iv link | grep  $str_nic_name | awk '{print $2}'`
    old_ifs=$IFS
    IFS=$'\n'
    array_ip_old_temp=($str_history)
    IFS=$old_ifs
    ip link show dev $str_nic_name | grep -i ,up
    if [ $? -eq 0 ];then
        str_nic_status='up'
        if [ -f "${str_his_file}" ];then
            cat ${str_his_file} | grep $str_nic_name
            if [ $? -eq 0 ];then
                str_nic_status='up'
                for str_old_ip in ${array_ip_old_temp[@]}
                do
                    str_old_ip=`echo $str_old_ip | tr '/' '_'`
                    str_ip_staus=$(hashget hash_new_config $str_old_ip)
                    if [ -n "$str_ip_staus" ];then
                        hashset hash_new_config $str_old_ip "old"
                    else
                        bool_modify_flag=1
                        logger -t xcat -p local4.err "configeth: delete $str_old_ip for $str_nic_name temporary."
                        echo "configeth on $NODE: delete $str_old_ip for $str_nic_name temporary."
                        str_old_ip=`echo $str_old_ip | tr '_' '/'`
                        ip addr del $str_old_ip dev $str_nic_name
                    fi
                done
            else
                bool_restart_flag=1
                bool_modify_flag=1
            fi
        else
            bool_restart_flag=1
            bool_modify_flag=1
        fi
    else
        bool_restart_flag=1
        bool_modify_flag=1
    fi

    #check if there are extra param values have been set or not
    #if set, always restart the the nic
    if [ ${#array_nic_params[@]} -gt 0 ]; then
		bool_restart_flag=1
		bool_modify_flag=1
	fi
			
    if [ $bool_restart_flag = 0 ];then
        #add the new defined ip
        old_ifs=$IFS
        IFS=$' '
        array_ip_mask_temp=($str_ip_mask_pair)
        IFS=$old_ifs
        for str_new_ip in ${array_ip_mask_temp[@]}
        do
            str_ip_status=$(hashget hash_new_config $str_new_ip)
            if [ "$str_ip_status" = "new" ];then
                bool_modify_flag=1
                if [ $bool_restart_flag -eq 0 ];then
                    logger -t xcat -p local4.err "configeth: add $str_new_ip for $str_nic_name temporary."
                    echo "configeth on $NODE: add $str_new_ip for $str_nic_name temporary."
                    add_ip_temporary $str_new_ip $str_nic_name
                fi
            fi
        done
    fi
    #configure the ipv6 default route
    if [ $bool_restart_flag -eq 0 -a -n "$str_ipv6_gateway" ];then
        ip -6 route | grep default | grep $str_ipv6_gateway
        if [ $? -ne 0 ];then
            logger -t xcat -p local4.err "configeth: the default ipv6 route changes to $str_ipv6_gateway."
            echo "configeth on $NODE: the default ipv6 route changes to $str_ipv6_gateway."
            ip -6 route del default
            ip -6 route add default $str_ipv6_gateway dev $str_dev_name
        fi
    fi

    #modify the configuration files
    if [ $bool_modify_flag -eq 1 ];then
        if [ $bool_restart_flag -eq 1 ];then
            if [ "$str_nic_status" = "up" ];then
                if [ "$str_os_type" = "debian" ];then
                    ifdown --force $str_nic_name > /dev/null
                else
                    ifdown $str_nic_name > /dev/null
                fi
            fi
            #delete all old ip address
            for str_old_ip in ${array_ip_old_temp[@]}
            do
                ip addr del $str_old_ip dev $str_nic_name
            done
        fi
        logger -t xcat -p local4.err "configeth: $str_nic_name changed, modify the configuration files"
        echo "configeth on $NODE: $str_nic_name changed, modify the configuration files"
        num_ipv4_index=0
        num_ipv6_index=0
        num_index=0
        if [ -e "$str_his_file" ];then
            grep $str_nic_name $str_his_file
            if [ $? -ne 0 ];then
                echo "${str_nic_name}" >> $str_his_file
            fi
        else
            echo "${str_nic_name}" > $str_his_file
        fi
        #delete the old alias configuration files on redhat
        if [ "$str_os_type" = "redhat" ];then
            rm -f /etc/sysconfig/network-scripts/ifcfg-${str_nic_name}:* 2>/dev/null
        fi
        while [ $num_index -lt ${#array_nic_ips[*]} ];do
            str_ip=${array_nic_ips[$num_index]}
            str_subnet=${array_nic_subnet[$num_index]}
            str_netmask=${array_nic_netmask[$num_index]}
            str_gateway=${array_nic_gateway[$num_index]}
			if [ $num_index -lt ${#array_nic_params[@]} ]; then
				str_extra_params=${array_nic_params[$num_index]}
			else
				str_extra_params=$str_default_token
			fi

            # make sure each parameter has a value
			if [[ -z "$str_gateway" ]]; then
				str_gateway=$str_default_token
			fi
			
			if [ ! $str_subnet -o ! $str_netmask ];then
                num_index=$((num_index+1))
                continue
            fi

			
            if [ `echo $str_ip | grep -E '^([0-9]{1,3}\.){3}[0-9]{1,3}$'` ];then
                configipv4 $str_nic_name $str_ip $str_subnet $str_netmask $num_ipv4_index "$str_extra_params"
                num_ipv4_index=$((num_ipv4_index+1))
            elif [ `echo $str_ip | grep -E ":"` ];then
                configipv6 $str_nic_name $str_ip $str_subnet $str_netmask $num_ipv6_index $num_ipv4_index $str_gateway "$str_extra_params"
                num_ipv6_index=$((num_ipv6_index+1))
            else
                num_index=$((num_index+1))
                continue
            fi
            num_index=$((num_index+1))
        done
    else
        logger -t xcat -p local4.err "configeth: $str_nic_name no changed, return directly."
        echo "configeth on $NODE: $str_nic_name no changed, return directly."
    fi

    #restart the nic
    if [ $bool_restart_flag -eq 1 ];then
        if [ "$str_os_type" = "debian" ];then
            ifup -a -i /etc/network/interfaces.d/$str_nic_name
        else
            echo "bring up ip"
            ifup $str_nic_name
        fi
    fi
fi

exit 0