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Current Path : /etc/sysconfig/network-scripts/
Current File : //etc/sysconfig/network-scripts/network-functions
# -*-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

[ -z "$__sed_discard_ignored_files" ] && . /etc/init.d/functions

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
}

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 | grep -v link/ieee802.11 | awk -F ': ' -vIGNORECASE=1 "/$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_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"
		;;
	Modem)
		DEVICETYPE="ppp"
		;;
	xDSL)
		DEVICETYPE="ppp"
		;;
	ISDN)
		DEVICETYPE="ippp"
		;;
	Wireless)
		DEVICETYPE="eth"
		;;
	"Token Ring")
		DEVICETYPE="eth"
		;;
	CTC)
		DEVICETYPE="ctc"
		;;
	GRE | IPIP)
		DEVICETYPE="tunnel"
		;;
	SIT | sit)
		DEVICETYPE="sit"
		;;
	InfiniBand | infiniband)
		DEVICETYPE="ib"
		;;
    esac
    if [ -n "$HWADDR" ]; then
        HWADDR=$(echo $HWADDR | awk '{ print toupper($0) }')
    fi
    if [ -n "$MACADDR" ]; then
        MACADDR=$(echo $MACADDR | awk '{ print toupper($0) }')
    fi
    [ -z "$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
    ! is_false $NM_CONTROLLED && is_nm_running && USE_NM=true
    if [ -z "$UUID" -a "$USE_NM" = "true" ]; then
	UUID=$(get_uuid_by_config $CONFIG)
    fi
}

ethtool_set()
{
    oldifs=$IFS;
    IFS=';';
    [ -n "${ETHTOOL_DELAY}" ] && /bin/usleep ${ETHTOOL_DELAY}
    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" ] && [ $idx -gt 2 ] && break
           continue
        fi
        prefix[$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 $i ]; then
        OWNER=$(ls -l $i | awk '{ print $3 }')
	
        if [ "$(id -u)" = "0" ]; then
	  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 ()
{
    [ "$(LANG=C nmcli -t --fields running nm status 2>/dev/null)" = "running" ]
}

is_nm_active ()
{
    LANG=C nmcli -t --fields device,state  dev status 2>/dev/null | grep -q "^${1}:connected$"
}

is_nm_device_unmanaged ()
{
    LANG=C nmcli -t --fields GENERAL dev list iface "${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_hostname_set ()
{
    CHECK_HOSTNAME="$(hostname)"

    case "$CHECK_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 ()
{
    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 ()
{
     if LC_ALL=C ip -o link show dev $1 2>/dev/null | grep -q ",UP" ; then
	return 1
     else
	return 0
     fi
}

check_ethtool ()
{
   [ -x /sbin/ethtool ] || return 2
   output=$(LC_ALL=C ethtool $1 2>&1)
   echo $output | LC_ALL=C grep -q "Link detected: yes" && return 1
   echo $output | LC_ALL=C grep -q "Link detected: no" && return 0 || return 2
}


check_link_down ()
{
    if [ -x /sbin/ethtool ]; then
        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
	    check_ethtool $1
	    e=$?
	    if [ $e -eq 1 ] ; then
		return 1
	    fi
	    if [ $e -eq 2 ] ; then
		return 1
	    fi
	    usleep 500000
	    timeout=$((timeout+1))
	done
	return 0
    fi
    return 1
}

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 ()
{
    [ -d "/sys/class/net/$1/wireless" ]
}

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 ()
{
   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
	                bopts_keys[$idx]=""
	            fi
	            if [ "${key}" = "miimon" ] ; then
	                echo "${value}" > /sys/class/net/${DEVICE}/bonding/$key
	                bopts_keys[$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
			    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
		        fi
		    elif [ "${key}" != "primary" ]; then
	                echo $value > /sys/class/net/${DEVICE}/bonding/$key
	            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 [ $n_args -gt 0 ]; 
	 do 
	    if [[ "$s" = *$1* ]]; then
	       shift;
	       n_args=$(($n_args-1));
               continue;
            fi;
	    s="$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/lock/subsys/nscd ] && /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

	echo $message

	if [ -x /usr/bin/logger ]; then
		/usr/bin/logger -p daemon.$level -t "$name" "$message"
	fi
	return 0
}
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