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✏️ Editing: functions

#!/bin/bash
# Copyright (c) 2015-2017, Parallels International GmbH
# Copyright (c) 2017-2019 Virtuozzo International GmbH. All rights reserved.

# Set the sane umask
umask 022

# Error codes
VZ_INVALID_PARAMETER_SYNTAX=20
VZ_FS_NO_DISK_SPACE=46
VZ_FS_BAD_TMPL=47
VZ_FS_NEW_VE_PRVT=48
VZ_CHANGEPASS=74
VZ_CANT_ADDIP=34
VZ_IP_INUSE=78
VZ_SET_RATE=80
VZ_SET_ACCOUNT=81
CP='/bin/cp -fp'
[ -f /etc/fedora-release ] && CP='/bin/cp -f --preserve=mode,ownership'
NWSYSTEMDIR="/etc/NetworkManager"
NWSYSTEMCONF="$NWSYSTEMDIR/nm-system-settings.conf"
NMCONFFILE="$NWSYSTEMDIR/NetworkManager.conf"
NWSYSTEMCONNECTIONS="$NWSYSTEMDIR/system-connections"
NWCONFDIR="$NWSYSTEMDIR/conf.d"
NWMANAGER="/etc/init.d/NetworkManager"
NWMANAGER_FAILED=0
[ -f "${NWMANAGER}" ] || NWMANAGER="/etc/init.d/network-manager"
SYSTEMCTL="/bin/systemctl"
INITDIR="/etc/init.d"
NETTOOL_LOG="/var/log/vz-nettool.log"
DEBIAN_CONFIGFILE="/etc/network/interfaces"
DEBIAN_CONFIGFILES="$DEBIAN_CONFIGFILE /etc/network/interfaces.d/*"
NETPLAN_CFG="netplan-cfg.py"
#options used in *-set_ip.sh
USE_DHCPV4=0
USE_DHCPV6=0

# Prints error message and exits
# Parameters:
#   $1 - error message
#   $2 - exit code
# Example of usage:
#   error "Fatal error" 1
function error()
{
        # print errors to stdout too
        ERR=$?
        echo "$SELFNAME ERROR: $1"
        exit $2
}

# Puts line
# NAME="value"
# to config file. If NAME is found, line gets replaced,
# otherwise it is added to the end of file.
# Parameters:
# $1 - config file
# $2 - NAME
# $3 - value
function put_param()
{
	local file="$1"
	local name="$2"
	local value="$3"
	local path
	
	path=${file%/*}
	if [ ! -d "${path}" ]; then
		 mkdir -p ${path} || error "Unable to create dir ${path}" $VZ_FS_NO_DISK_SPACE
	fi
	if grep -E "^$name=.*" $file>/dev/null 2>&1; then
		${CP} ${file} ${file}.$$ || error "Can't copy file $file" $VZ_FS_NO_DISK_SPACE
		/bin/sed -e "s|^$name=.*|$name=\"$value\"|" < ${file} > ${file}.$$
		if [ $? -ne 0 ]; then
			rm -f ${file}.$$ 2>/dev/null 
			error "Can't change file $file" $VZ_FS_NO_DISK_SPACE
		fi
		mv -f ${file}.$$ ${file}
	else
		echo "$name=\"$value\"" >> $file || error "Can't change file $file" $VZ_FS_NO_DISK_SPACE
	fi
}

# Adds value to variable NAME
# in config file. If NAME is found, value gets added,
# otherwise it is added to the end of file.
# Parameters:
# $1 - config file
# $2 - NAME
# $3 - value
function add_param()
{
	local file=$1
	local name=$2
	local value=$3
	local path
	
	path=${file%/*}
	if [ ! -d "${path}" ]; then
		 mkdir -p ${path} || error "Unable to create dir ${path}" $VZ_FS_NO_DISK_SPACE
	fi
	if grep -qe "^$name=" $file >/dev/null 2>&1; then
		${CP} ${file} ${file}.$$ || \
			error "Can't copy file $file" $VZ_FS_NO_DISK_SPACE
		/bin/sed -e "s|^$name=\"$.*$\"|$name=\"\1 $value \"|" < ${file} > ${file}.$$
		if [ $? -ne 0 ]; then
			rm -f ${file}.$$ 2>/dev/null 
			error "Can't change file $file" $VZ_FS_NO_DISK_SPACE
		fi
		mv -f ${file}.$$ ${file}
	else
		echo "$name=\"$value\"" >> $file || error "Can't change file $file" $VZ_FS_NO_DISK_SPACE
	fi
}

# Puts line
# NAME value
# to config file. If NAME is found, line gets replaced,
# otherwise it is added to the end of file.
# Parameters:
# $1 - config file
# $2 - NAME
# $3 - value
function put_param2()
{
	local file="$1"
	local name="$2"
	local value="$3"
	local path;

path=${file%/*}
	if [ ! -d "${path}" ]; then
		 mkdir -p ${path} || error "Unable to create dir ${path}" $VZ_FS_NO_DISK_SPACE
	fi
	if grep -E "^\<$name\>" $file>/dev/null 2>&1; then
		${CP} ${file} ${file}.$$ || error "Can't copy file $file" $VZ_FS_NO_DISK_SPACE
		/bin/sed -e "s|^\<$name\>.*|$name $value|" < ${file} > ${file}.$$
		if [ $? -ne 0 ]; then
			rm -f ${file}.$$ 2>/dev/null 
			error "Can't change file $file" $VZ_FS_NO_DISK_SPACE
		fi
		mv -f ${file}.$$ ${file}
	else
		echo "$name $value" >> $file || error "Can't change file $file" $VZ_FS_NO_DISK_SPACE
	fi
}

# Puts line
# NAME=( value )
# to config file. If NAME is found, line gets replaced,
# otherwise it is added to the end of file.
# Parameters:
# $1 - config file
# $2 - NAME
# $3 - value
function put_param3() {
	local file=$1
	local name=$2
	local value=$3
	local path
	
	path=${file%/*}
	if [ ! -d "${path}" ]; then
		 mkdir -p ${path} || error "Unable to create dir ${path}" $VZ_FS_NO_DISK_SPACE
	fi
	if grep -E "^$name=$.*$" $file>/dev/null 2>&1; then
		${CP} ${file} ${file}.$$ || error "Can't copy file $file" $VZ_FS_NO_DISK_SPACE
		if [ -z "${value}" ]; then
			/bin/sed -e "s|^$name=$.*$|$name=|" < ${file} > ${file}.$$
		else
			/bin/sed -e "s|^$name=$.*$|$name=$ \"$value\" $|" < ${file} > ${file}.$$
		fi
		if [ $? -ne 0 ]; then
			rm -f ${file}.$$ 2>/dev/null 
			error "Can't change file $file" $VZ_FS_NO_DISK_SPACE
		fi
		mv -f ${file}.$$ ${file}
	else
		if [ -z "${value}" ]; then
			echo "$name=( )" >> $file || error "Can't change file $file" $VZ_FS_NO_DISK_SPACE
		else
			echo "$name=( \"$value\" )" >> $file || error "Can't change file $file" $VZ_FS_NO_DISK_SPACE
		fi
	fi
}

# Adds value to array NAME
# in config file. If NAME is found, value gets added,
# otherwise it is added to the end of file.
# Parameters:
# $1 - config file
# $2 - NAME
# $3 - value
function add_param3() {
	local file=$1
	local name=$2
	local value=$3
	local path
	
	path=${file%/*}
	if [ ! -d "${path}" ]; then
		 mkdir -p ${path} || error "Unable to create dir ${path}" $VZ_FS_NO_DISK_SPACE
	fi
	if grep -E "^$name=$.*$" $file>/dev/null 2>&1; then
		${CP} ${file} ${file}.$$ || error "Can't copy file $file" $VZ_FS_NO_DISK_SPACE
		/bin/sed -r "s|^$name=$(.*)$|$name=$ \1 \"$value\" $|" < ${file} > ${file}.$$
		if [ $? -ne 0 ]; then
			rm -f ${file}.$$ 2>/dev/null 
			error "Can't change file $file" $VZ_FS_NO_DISK_SPACE
		fi
		mv -f ${file}.$$ ${file}
	else
		echo "$name=( \"$value\" )" >> $file || error "Can't change file $file" $VZ_FS_NO_DISK_SPACE
	fi
}

# Removes value from array NAME
# in config file. If NAME is found, value gets removed,
# otherwise this is a noop function.
# Parameters:
# $1 - config file
# $2 - NAME
# $3 - value
function del_param3() {
	local file=$1
	local name=$2
	local value=$3
	
	[ ! -f $file ] && return
	
	if grep -E "^$name=$.*$" $file>/dev/null 2>&1; then
		${CP} ${file} ${file}.$$ || error "Can't copy file $file" $VZ_FS_NO_DISK_SPACE
		/bin/sed -r "s|^($name=$ .*)\"$value\"(.* $)|\1\2|" < ${file} > ${file}.$$
		if [ $? -ne 0 ]; then
			rm -f ${file}.$$ 2>/dev/null 
			error "Can't change file $file" $VZ_FS_NO_DISK_SPACE
		fi
		mv -f ${file}.$$ ${file}
	else
		return
	fi
}

function is_netplan_controlled()
{
	if which netplan >/dev/null 2>/dev/null; then
		return 0
	else
		return 1
	fi
}

function remove_debian_interface()
{
	local dev="$1"
	local cfg="$2"
	local ret=0

${CP} ${cfg} ${cfg}.$$ || \
		error "Can't copy file ${cfg}" $VZ_FS_NO_DISK_SPACE

awk '
		NF == 0 {next}
		$1 == "iface" || $1 == "mapping" || $1 == "auto" || $1 ~ /allow-/ || $1 == "source" \
		|| $1 == "source-directory" {skip = 0}
		$1 == "auto" && $2 ~/'${dev}'$/ {skip = 1}
		$1 == "allow-hotplug" && $2 ~/'${dev}'$/ {skip = 1}
		$1 == "iface" && $2 ~/'${dev}'$/ {skip = 1}
		skip {next}
		{print}
	' < ${cfg} > ${cfg}.$$ && cp -f ${cfg}.$$ ${cfg}

diff -q ${cfg}.$$ ${cfg} > /dev/null 2>&1
	ret=$?

rm -f ${cfg}.$$ 2>/dev/null

return $ret
}

function remove_debian_interfaces()
{
	local dev="$1"
	local cf
	local ret=0

for cf in $DEBIAN_CONFIGFILES; do
		[ ! -f $cf ] && continue
		remove_debian_interface $dev $cf
		[ $ret -eq 0 ] && ret=$?
	done

return $ret
}

function change_hostname()
{
	local cfg="$1"
	local host="$2"
	local ip="$3"
	local comm='# Auto-generated hostname. Please do not remove this comment.'

[ -f "${cfg}" ] || touch ${cfg}
	if [ "${host}" = "localhost" -o "${host}" = "localhost.localdomain" ];
	then
		put_param2 ${cfg} "127.0.0.1" "localhost.localdomain localhost"
		return
	fi
	${CP} ${cfg} ${cfg}.$$ || \
		error "Can't copy file ${cfg}" $VZ_FS_NO_DISK_SPACE
	awk -v ip="${ip}" -v host="${host}" -v comm="${comm}" '
                BEGIN {found = 0; skip = 0}
                $0 == comm {found = 1; next}
                found {
                        if (ip == "") {ip = $1}
			found = 0;
                        next;
                }
		$0 ~ "\\<" host "\\>" {
			if (!skip) {
				skip = 1;
			} else {
				next;
			}
		}
                {print}
                END {
                        if (skip) exit 0;
                        if (ip == "") { ip ="127.0.0.1" }
                        print comm;
			alias=""
			if ((i=index(host, ".")) > 1) {
				alias=substr(host, 1, i - 1);
			}
			print ip " " host " " alias;
                }
	' < ${cfg} > ${cfg}.$$
	if [ $? -ne 0 ]; then
		rm -f ${cfg}.$$ 2>/dev/null 
		error "Can't change file ${cfg}" $VZ_FS_NO_DISK_SPACE
	fi
	mv -f ${cfg}.$$ ${cfg}
}

function is_ipv6()
{
	if [ "${1#*:}" != "${1}" ]; then
		return 0
	else
		return 1
	fi
}

check_dhcp()
{
	local found=

for pkg in dhcpcd dhclient; do
		for p in /sbin /usr/sbin; do
			if [ -x $p/$pkg ]; then
				found=1;
				break;
			fi 
		done
	done
	[ -z "$found" ] && echo "Warning: DHCP client daemon not found"
}

check_dhcp_ipv6()
{
	local found=

for p in /sbin /usr/sbin; do
		if [ -x $p/dhcp6c ]; then
			found=1;
			break;
		fi
	done
	[ -z "$found" ] && echo "Warning: DHCP IPv6 client daemon not found"
}

regen_dhcp6c_conf()
{
	local eths="$*"	
	local conf="/etc/wide-dhcpv6/dhcp6c.conf"
	local num=0
	local dev

[ -d "/etc/wide-dhcpv6" ] || return

/bin/rm -f $conf 
	touch $conf

for dev in $eths; do
		echo "
interface $dev {
send ia-na $num;
request domain-name-servers;
request domain-name;
};

id-assoc na $num {
};
	"	>> $conf
		let num=nom+1
	done	
}

set_wide_dhcpv6()
{
	local ETH_DEV=$1
	local config="/etc/default/wide-dhcpv6-client"
	local ifaces=""

if [ -f $config ]; then
		check_dhcp_ipv6
		. $config
		for iface in $INTERFACES; do
			if [ "x$iface" != "x${ETH_DEV}" ]; then
				ifaces="$iface "
			else
				return 0
			fi
		done
		ifaces=`echo $ifaces | sed "s, $,,g"`
		if [ -z $ifaces ]; then
			echo "INTERFACES=\"${ETH_DEV}\"" > $config
			regen_dhcp6c_conf "${ETH_DEV}"
		else
			echo "INTERFACES=\"$ifaces ${ETH_DEV}\"" > $config
			regen_dhcp6c_conf "$ifaces ${ETH_DEV}"
		fi
		/etc/init.d/wide-dhcpv6-client restart >/dev/null 2>&1
		/usr/sbin/update-rc.d -f wide-dhcpv6-client defaults >/dev/null 2>&1
	fi
}

unset_wide_dhcpv6()
{
	local ETH_DEV=$1
	local config="/etc/default/wide-dhcpv6-client"

if [ -f $config ]; then
		. $config
		for iface in $INTERFACES; do
			if [ "x$iface" != "x${ETH_DEV}" ]; then
				ifaces="$iface "
			fi
		done
		ifaces=`echo $ifaces | sed "s, $,,g"`
		echo "INTERFACES=\"$ifaces\"" > $config

regen_dhcp6c_conf "$ifaces"
	fi
}

set_options()
{
	local options=" ${1} "
	[ "${options/ dhcp }" != "${options}" ] && USE_DHCPV4=1
	[ "${options/ dhcpv6 }" != "${options}" ] && USE_DHCPV6=1
}

need_to_disable_network_manager() (
	local path="/etc/os-release"
	if [ -f "$path" ]; then
		source "$path"
		VERSION_ID=${VERSION_ID//.*}
		# no need to disable NetworkManager for Fedora >= 21
		[ "$ID" == "fedora" -a $VERSION_ID -lt 21 ] && return 1
		[ "$ID" == "centos" -a $VERSION_ID -lt 7 ] && return 1
		[ "$ID" == "redos" -a $VERSION_ID -lt 7 ] && return 1
		[ "$ID" == "virtuozzo" -a $VERSION_ID -lt 7 ] && return 1
		[ "$ID" == "cloudlinux" -a $VERSION_ID -lt 7 ] && return 1
		[ "$ID" == "rhel" -a $VERSION_ID -lt 7 ] && return 1
	fi
	return 0
)

service_command()
{
	local service=$1
	local cmd=$2

if [ -x $SYSTEMCTL ]; then
		$SYSTEMCTL $cmd $service > /dev/null 2>&1
	else
		$INITDIR/$service $cmd > /dev/null 2>&1
	fi
}

disable_network_manager()
{
	need_to_disable_network_manager
	[ $? -eq 0 ] && return

local nm_sysv="/etc/init.d/NetworkManager"

if [ -x $SYSTEMCTL ]; then
		disable_network_manager_systemd
	else
		disable_network_manager_sysv
	fi
}

disable_network_manager_systemd()
{
	local nm="NetworkManager"
	local timeout=15
	local service=`find /etc/systemd/ -name $nm.service 2>/dev/null`
	local dhclient="dhclient"
	local dhclient_pids=""

[ "x$service" = "x" ] && return

# Will wait for start complete
	while [ $timeout -gt 0 ]; do
		$SYSTEMCTL status $nm
		[ $? -eq 0 ] && break
		sleep 1
		timeout=$((timeout-1))
	done
	if [ $timeout -eq 0 ]; then
		$SYSTEMCTL status $nm
		[ $? -ne 0 ] && return
	fi

$SYSTEMCTL stop $nm
	$SYSTEMCTL disable $nm

# Kill all dhclients, NM doesn't do it
	dhclient_pids=`/bin/pgrep $dhclient 2>/dev/null`
	for dhclient_pid in $dhclient_pids; do
		kill $dhclient_pid > /dev/null 2>&1
	done

/sbin/chkconfig network on
	/etc/init.d/network restart
}

disable_network_manager_sysv()
{
	local nm="/etc/init.d/NetworkManager"
	local ret=""

chkconfig --list NetworkManager | grep on
	ret="$?"
	if [ "$ret" == "0" ] ; then
		chkconfig NetworkManager off
		chkconfig network on
	fi

$nm status | grep -q stopped
	ret="$?"
	if [ "$ret" != "0" ] ; then
		$nm stop
		/etc/init.d/network restart
	fi
}

is_device_up()
{
	if [ -x /sbin/ip ]; then
		LC_ALL=C /sbin/ip -o link show dev $1 2>/dev/null | grep -wq "UP"
	else
		LC_ALL=C /sbin/ifconfig $1 2>/dev/null | grep -wq "RUNNING"
	fi

[ $? -eq 0 ] && return 0

return 1
}

generate_uuid()
{
	local uuid

if [ -x /bin/uuidgen -o -x /usr/bin/uuidgen ]; then
		uuid=`uuidgen 2>/dev/null`
	elif [ -f /proc/sys/kernel/random/uuid ]; then
		uuid=`cat /proc/sys/kernel/random/uuid`
	else
		uuid=`python  -c 'import uuid; print uuid.uuid1()' 2>/dev/null`
	fi

if [ "x$uuid" = "x" ]; then
		# Only bash...
		echo -n "$((RANDOM %10))$((RANDOM %10))$((RANDOM %10))$((RANDOM %10))$((RANDOM %10))$((RANDOM %10))$((RANDOM %10))$((RANDOM %10))-"
		echo -n "$((RANDOM %10))$((RANDOM %10))$((RANDOM %10))$((RANDOM %10))-$((RANDOM %10))$((RANDOM %10))$((RANDOM %10))$((RANDOM %10))-"
		echo -n "$((RANDOM %10))$((RANDOM %10))$((RANDOM %10))$((RANDOM %10))-$((RANDOM %10))$((RANDOM %10))$((RANDOM %10))$((RANDOM %10))"
		echo "$((RANDOM %10))$((RANDOM %10))$((RANDOM %10))$((RANDOM %10))$((RANDOM %10))$((RANDOM %10))$((RANDOM %10))$((RANDOM %10))"
	else
		echo $uuid
	fi
}

function get_suse_config_name()
{
	# Parameters: <dev> <MAC_addr>
	#  <dev>        - name of device (example: eth1)
	#  <MAC_addr>   - MAC address of device
	# problem: network configs on suse 10(,9) and suse 11 contains the same information,
	# but have different config names
	# examples:
	#  suse 10:     ifcfg-eth-id-00:0c:29:90:c3:91
	#  suse 11:     ifcfg-eth1
	#  opensuse 4x: ifcfg-eth1

local ETH_DEV=$1
	local ETH_MAC=$2
	IFCFG_DIR=/etc/sysconfig/network

ETH_DEV_CFG=ifcfg-$ETH_DEV
	IFCFG=${IFCFG_DIR}/${ETH_DEV_CFG}
	[ -f $IFCFG ] && return 0

ETH_DEV_CFG=ifcfg-eth-id-$ETH_MAC
	IFCFG=${IFCFG_DIR}/${ETH_DEV_CFG}
	[ -f $IFCFG ] && return 0

# /etc/SuSE-release is deprecated and will be removed in the future
	if [ -f /etc/os-release ]; then
		RELEASE_FILE=/etc/os-release
	else
		RELEASE_FILE=/etc/SuSE-release
	fi

#if config not found - check suse-release
	grep -qi "^[[:space:]]*VERSION.*10" $RELEASE_FILE
	[ $? -eq 0 ] && return 0

ETH_DEV_CFG=ifcfg-$ETH_DEV
	IFCFG=${IFCFG_DIR}/${ETH_DEV_CFG}
}

is_nm_present()
{
	need_to_disable_network_manager || return 0

if [ -x '/bin/systemd' -o -x '/usr/lib/systemd/systemd' ] && [ -x '/usr/sbin/NetworkManager' ]; then
		return 1
	fi

return 0
}

is_nm_active()
{
	if [ -x $SYSTEMCTL ]; then
		service_command "NetworkManager" "is-active"
	else
		service_command "NetworkManager" "status"
	fi
}

nm_get_if_field()
{
	local field=$2
	local name="prl_nettool-nm-$1"

out=`nmcli --field $field c show $name 2>/dev/null`
	[ $? -ne 0 ] && return 1

echo $out | sed s/$field:// | sed s/[[:space:]]//g
}

create_nm_if_config()
{
	local path="$NWCONFDIR/60-prl_nettool_$1.conf"

if [ -f "$path" ]; then
		return 0
	fi

cat > "$path" <<-EOF
[main]
no-auto-default+=$2
plugins-=ifcfg-rh
EOF
	service_command NetworkManager restart
	NWMANAGER_FAILED=0
}

nm_check_and_create()
{
	local dev=$1
	local mac=$2
	local name="prl_nettool-nm-$dev"

create_nm_if_config $dev $mac || return $?

call_nmcli c show $name
	is_old=$?

if [ $is_old -eq 0 ]; then
		old_mac=`nm_get_if_field $dev 802-3-ethernet.mac-address` || return $?
		if [ ${mac^^} != ${old_mac^^} ]; then
			call_nmcli c delete $name ||
				return $?
			is_old=1
		fi
	fi

if [ $is_old -ne 0 ]; then
		call_nmcli c add type ethernet ifname $dev con-name $name mac $mac ||
			return $?
	fi

uuid=`nm_get_if_field $dev connection.uuid` || return $?

# Set mac to dhcp-client-id for same dhcp identefication on interface different configs
	if [ $is_old -ne 0 ]; then
		call_nmcli c modify $uuid ipv4.dhcp-client-id "1:$mac" ||
			return $?
		call_nmcli c modify $uuid ipv4.may-fail no ||
			return $?
	fi

echo $uuid
}

function nmcli_clean_ip_and_gw()
{
	local uuid=$1
	local ipv=$2
	# clean IPvX addreses and gateway from connection
	call_nmcli c modify $uuid ipv${ipv}.gateway ""
	call_nmcli c modify $uuid ipv${ipv}.address ""
}

call_nm_script()
{
	local from=$1
	local nmscript=`echo $from | sed 's@$.*/$$redhat\|debian\|suse$@\1nm@'`
	if [ $nmscript = $from ]; then
		#scriptdir/set_dns.sh have no os prefix, handle it here
		nmscript=`echo $from | sed 's@$.*/$@\1nm-@'`
	fi

is_nm_active
	if [ $? -eq 0 -a -f $nmscript ]; then
		$nmscript "${@:2}"
		return $?
	fi

return 0
}

call_nmcli()
{
	out=`LC_ALL=C nmcli "$@" 2>&1`
	res=$?

# NetworkManager is offline for first time
	if [ $res -eq 8 -a $NWMANAGER_FAILED -eq 0 ]; then
		# wait 30s for NetworkManager
		if nm-online -t 30 >/dev/null 2>&1; then
			out=`LC_ALL=C nmcli "$@" 2>&1`
			res=$?
		else
			out="$out (NetworkManager did not start in 30 seconds)"
			NWMANAGER_FAILED=1
		fi
	fi

[ $res -ne 0 ] && echo "[`date`]: ERROR at 'nmcli $*'
	called from ${BASH_SOURCE[1]}:${BASH_LINENO[1]} ${FUNCNAME[1]}():
	$out" >> $NETTOOL_LOG

return $res
}

restart_nm_wait()
{
	killall -9 NetworkManager > /dev/null 2>&1
	/usr/bin/nm-online -t 30 >/dev/null 2>&1
	# For case if it was stopped
	$NWMANAGER restart > /dev/null 2>&1
}

clean_nm_connections()
{
	local dev=$1
	local mac=$2
	local macnw=$3
	local nmdev=""
	local need_restart=0

if [ -d $NWCONFDIR ]; then
		echo "
[main]
no-auto-default+=$2
plugins-=ifupdown
" > $NWCONFDIR/prl_nettool_$1.conf
		[ ! -f $NWCONFDIR/prl_nettool_$1.conf ] && need_restart=1
	fi

ls $NWSYSTEMCONNECTIONS/* >/dev/null 2>&1
	if [ $? -eq 0 ]; then
		for i in $NWSYSTEMCONNECTIONS/*; do
			echo $i | grep "Wired connection" >/dev/null 2>&1 && rm -f "$i" && need_restart=1 && continue
			cat "$i" | grep -E "$mac|$macnw" >/dev/null 2>&1
			[ $? -eq 0 ] && rm -f "$i" && continue
			type nmcli > /dev/null 2>&1 || continue
			for nmdev in `nmcli c show 2>/dev/null | grep "^$(basename '$i')" | awk -v device=0 '{if (device == 0) {device=index($0, "DEVICE"); next}; print substr($0, device)}'`; do
				[ "x$nmdev" = "x$dev" ] && rm -f "$i" && need_restart=1 && break
			done
		done
	fi

[ $need_restart -eq 1 ] && restart_nm_wait
}

nm_connection_reload()
{
	local dev=$1

type nmcli > /dev/null 2>&1 || return

nmcli connection reload $1 > /dev/null 2>&1
}

# "X.X.X.X/Z=X.X.X.Ym100" -> "X.X.X.X/Z X.X.X.Y 100"
split_route()
{
	local gw=$1
	local metric=${gw##*m}
	[ "$metric" = "$gw" ] && metric=
	gw=${gw%m*}
	local hop=${gw##*=}
	[ "$hop" = "$gw" ] && hop=
	echo "${gw%=*} $hop $metric"
}

route_ip()
{
	split_route $1 | awk -F '[ ]' '{print $1}'
}

route_gw()
{
	split_route $1 | awk -F '[ ]' '{print $2}'
}

route_metric()
{
	split_route $1 | awk -F '[ ]' '{print $3}'
}

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