#!/bin/sh - keep it for file(1) to get bourne shell script result # # # This is not a shell script; it provides functions to network scripts # that source it. source_config () { local foundconfig=0 DEVNAME=${CONFIG##*/} DEVNAME=${DEVNAME##ifcfg-} DEVNAME=${DEVNAME##tnlcfg-} if [[ "$CONFIG" = /* ]]; then if [ -f "$CONFIG" ]; then . "$CONFIG" foundconfig=1 fi elif [ -f "/etc/sysconfig/interfaces/$CONFIG" ]; then . "/etc/sysconfig/interfaces/$CONFIG" foundconfig=1 fi # This is sanity check so that if you've copied ifcfg-eth0 to ifcfg-eth1 # and forgot to alter DEVICE= line you won't accidentally bring down eth0 # while executing ifdown eth1. We do that only if configuration file exists # (sometimes ifcfg-xyz isn't needed at all like server-side pppoe pppX interfaces) if [ "$foundconfig" -eq "1" -a "$DEVICE" -a "$DEVNAME" != "$DEVICE" ]; then echo >&2 "$0: DEVICE specified in $CONFIG does not match filename. Aborting!" exit 1 fi if [ "${PREFIX}" ] && [[ "$IPADDR" != */* ]]; then IPADDR="$IPADDR/$PREFIX" fi } do_netreport () { # Notify programs that have requested notification ( cd /var/run/netreport || exit for i in *; do [ -f $i ] && kill -SIGIO $i >/dev/null 2>&1 || \ rm -f $i >/dev/null 2>&1 done ) } need_hostname() { local hostname=$(hostname) if [ "$hostname" = "(none)" -o "$hostname" = "localhost" -o "$hostname" = "localhost.localdomain" ]; then NEEDHOSTNAME=yes else unset NEEDHOSTNAME fi } set_hostname() { local hostname domain hostname=$(echo $1 | awk ' { gsub(/\..*$/,NIL); print $0; } ') domain=$(echo $1 | awk ' { sub(/^[^\.]*\./,NIL); print $0; } ') if [ "$hostname" ]; then echo "$hostname" > /etc/HOSTNAME hostname $hostname fi if [ "$domain" ]; then # XXX umask and possible /etc/resolv.conf symlink breakage > /etc/resolv.conf.new if ! grep -Fq "search $domain" /etc/resolv.conf; then echo "search $domain" >> /etc/resolv.conf.new fi echo "domain $domain" >> /etc/resolv.conf.new grep -v "^domain " /etc/resolv.conf >> /etc/resolv.conf.new mv -f /etc/resolv.conf.new /etc/resolv.conf fi } set_dhcpclient() { if [ "$BOOTPROTO" = "bootp" -o "$BOOTPROTO" = "pump" ]; then DHCP_CLIENT=/sbin/pump fi if [ -z "$DHCP_CLIENT" ]; then if [ "$BOOTPROTO" = "zeroconf" -a -x /usr/sbin/avahi-autoipd ]; then DHCP_CLIENT=/usr/sbin/avahi-autoipd elif [ -x /sbin/dhcpcd ]; then DHCP_CLIENT=/sbin/dhcpcd elif [ -x /sbin/dhclient ]; then DHCP_CLIENT=/sbin/dhclient elif [ -x /sbin/dhcpxd ]; then DHCP_CLIENT=/sbin/dhcpxd elif [ -x /sbin/pump ]; then DHCP_CLIENT=/sbin/pump elif [ "$BOOTPROTO" = "auto" -a -x /usr/sbin/avahi-autoipd ]; then DHCP_CLIENT=/usr/sbin/avahi-autoipd else nls "Can't find a DHCP client." exit 1 fi fi } # Setup Network Address Translation (NAT) setup_nat() { local src via dst if [ -r /etc/sysconfig/static-nat ]; then if [ "$1" = "on" ]; then grep "^[0-9]" /etc/sysconfig/static-nat | while read src via dst; do /sbin/ip route add nat $dst via $src /sbin/ip rule add from $src nat $dst done elif [ "$1" = "off" ]; then LC_ALL=C /sbin/ip route show table all | grep -E "^nat[[:blank:]]" | while read nat dst via src args; do /sbin/ip rule del from $src nat $dst /sbin/ip route del nat $dst via $src done fi fi } # Setup static ARP static_arp() { local rc arpdev host hwaddr flags neflags if is_yes "$STATIC_ARP" && [ -r /etc/ethers ]; then if [ -x /sbin/arp ]; then run_cmd "Setting static ARP entries" /sbin/arp -f /etc/ethers else show "Setting static ARP entries"; busy rc=0 arpdev=$(ip link show | awk -F':' '(/UP/) && ! (/NOARP/) && ! (/lo:/) && ! (/NONE:/) { print $2; exit }') if [ -z "$arpdev" ]; then rc=1 else # ip supports only ip addresses grep "^[0-9]" /etc/ethers | \ while read host hwaddr flags; do case "$flags" in *temp*) neflags="nud stale" ;; *) neflags="nud permanent" ;; esac if ! /sbin/ip neigh add $host lladdr $hwaddr $neflags dev $arpdev; then rc=1 fi done fi if [ "$rc" -gt 0 ]; then fail fi fi fi } static_rarp() { if is_yes "$STATIC_RARP"; then if [ ! -e /proc/net/rarp ]; then _modprobe single rarp fi if [ -r /etc/ethers -a -x /sbin/rarp ]; then run_cmd "Setting static RARP entries" /sbin/rarp -f /etc/ethers fi fi } # Set up all IP && IP parameter variables setup_ip_param () { # detect network device type (ie. dummy, eth for dummy0, eth0 ..) if [ -z "$DEVICETYPE" ]; then # If there's a dot, it's a vlan if echo ${DEVICE} | LC_ALL=C grep -qE '^[a-z0-9]+\.[0-9]+$'; then DEVICETYPE=vlan else DEVICETYPE=$(echo $DEVICE | awk ' { gsub(/[\.:]?[0-9]*[\.:]?[0-9]*$/,NUL); print $0 } ') fi fi # real name of device (ie. is eth0 for eth0,eth0:1,eth0:alias) SUBDEVICE=$(echo "$DEVICE" | grep -E "([0-9]+:[0-9]+)") DEVICE=$(echo $DEVICE | awk ' { gsub(/:.*$/,NUL); print $0 } ') eval IP4ADDR="\$IPADDR${IP4_PRIM_IF:-}" # check if ipaddr doesn't contain network length -- use $NETMASK then if [[ "$IP4ADDR" != */* ]] && [ "$NETMASK" ]; then IP4ADDR=$IP4ADDR/$(calcprefix $NETMASK) fi # check if we have ipv6 or ipv4 address if [[ "${IP4ADDR}" = *:* ]]; then IP6ADDR=${IP4ADDR} IP4ADDR="" else eval IP4ADDROPT="\$IP_AOPTS${IP4_PRIM_IF:-}" eval IP4ROUTEOPT="\$IP_ROPTS${IP4_PRIM_IF:-}" fi if [ "${IP6_PRIM_IF}" ]; then eval IP6ADDR="\$IPADDR${IP6_PRIM_IF:-}" eval IP6ADDROPT="\$IPV6_AOPTS${IP6_PRIM_IF:-}" eval IP6ADDRLABEL="\$IP_LABEL${IP6_PRIM_IF:-}" fi if [ "${IP4_SRC_IF}" ]; then eval IP4SRCADDR="\$IPADDR${IP4_SRC_IF}" IP4SRCADDR=$(echo ${IP4SRCADDR} | awk ' { gsub(/\/.*/,NIL); print "src " $0; } ') fi # new rc-scripts 0.4.x option if [ -z "$HANDLING" ]; then HANDLING=0 fi # set handling for bridge case "$DEVICETYPE" in bond|br|atm|lec|irda|vlan) HANDLING=1 ;; esac # Multicast ready devices if [ -n "$MULTICAST" ]; then MULTICAST="$MULTICAST" else case "$DEVICETYPE" in eth|br|vlan) MULTICAST="on" ;; *) MULTICAST="off" ;; esac fi # ARP ready devices if [ "$ARP" ]; then if is_yes "$ARP"; then ARP="arp on" else ARP="arp off" fi fi } check_device_down () { if LC_ALL=C ip link show dev ${DEVICE} 2> /dev/null | grep -Fq UP; then return 1 else return 0 fi } setup_ip_gw_ro () { # IPv4 gateway if is_yes "$IPV4_NETWORKING"; then if [ -z "${GATEWAYDEV}" -o "${GATEWAYDEV}" = "${DEVICE}" ]; then # set up default gateway if [ "${GATEWAY}" ]; then ip -4 route add default via ${GATEWAY} dev ${DEVICE} ${IP4SRCADDR} onlink 2>/dev/null if [ $? = 0 ]; then DEFGW=${GATEWAY} else # The default gateway could be set via eth0, while bringing up eth1 we shouldn't set default gateway again. # To prevent this message just set GATEWAYDEV=eth0 in /etc/sysconfig/network. nls "Warning: Default gateway already set proably via other interface. Do you need to setup GATEWAYDEV?" fi elif [ "${GATEWAYDEV}" = "${DEVICE}" ]; then ip -4 route add default dev ${DEVICE} ${IP4SRCADDR} fi fi fi # IPv6 gateway && IPv6 globalroute if is_yes "$IPV6_NETWORKING"; then if [ -z "${GATEWAY6DEV}" -o "${GATEWAY6DEV}" = "${DEVICE}" ]; then # set up default gateway if [ "${GATEWAY6}" ]; then ip -6 route add default via ${GATEWAY6} dev ${DEVICE} ${IP6SRCADDR} onlink DEFGW6=${GATEWAY6} elif [ "${GATEWAY6DEV}" = "${DEVICE}" ]; then ip -6 route add default dev ${DEVICE} ${IP6SRCADDR} fi fi if [ -z "${IPV6_GLOBALROUTEDEV}" -o "${IPV6_GLOBALROUTEDEV}" = "${DEVICE}" ]; then # set up default route if [ "${IPV6_GLOBALROUTEGW}" ]; then ip -6 route add ${IPV6_GLOBALROUTEGW} dev ${DEVICE} ${IP6SRCADDR} onlink ip -6 route add 2000::/3 via ${IPV6_GLOBALROUTEGW} dev ${DEVICE} ${IP6SRCADDR} onlink elif [ "${IPV6_GLOBALROUTEDEV}" = "${DEVICE}" ]; then ip -6 route add 2000::/3 dev ${DEVICE} ${IP6SRCADDR} fi fi fi } # # following function sets up routes not associated to any device # eg. unreachable or blackhole routes # (c) 1999 Jacek Konieczny # setup_routes() { local args if [ -f /etc/sysconfig/static-routes ]; then if [ "$1" = "on" -o "$1" = "yes" ]; then grep -E "^(none|any)[[:blank:]]" /etc/sysconfig/static-routes | while read device args; do /sbin/ip route add $args done else grep -E "^(none|any)[[:blank:]]" /etc/sysconfig/static-routes | while read device args; do /sbin/ip route del $args 2>/dev/null done fi fi is_no "$IPV6_NETWORKING" && return if [ -f /etc/sysconfig/static-routes6 ]; then if [ "$1" = "on" -o "$1" = "yes" ]; then grep -E "^(none|any)[[:blank:]]" /etc/sysconfig/static-routes6 | while read device args; do /sbin/ip -6 route add $args done else grep -E "^(none|any)[[:blank:]]" /etc/sysconfig/static-routes6 | while read device args; do /sbin/ip -6 route del $args 2>/dev/null done fi fi } # Add ONLY IPv4 address (IPv6 address is added automaticly) set_up_loopback() { # test if addr is assigned already as lxd(lxc?) initializes loopback upfront if is_yes "$IPV4_NETWORKING" && ! ip addr show lo | grep -q "127\.0\.0\.1"; then ip addr add 127.0.0.1/8 dev lo fi ip link set dev lo up grep -E "^(lo|any)[[:blank:]]" /etc/sysconfig/static-routes | while read device args; do if [[ "$args" = *:* ]]; then is_no "$IPV6_NETWORKING" && continue else is_no "$IPV4_NETWORKING" && continue fi /sbin/ip route add $args dev lo done is_no "$IPV6_NETWORKING" && return grep -E "^(lo|any)[[:blank:]]" /etc/sysconfig/static-routes6 | while read device args; do /sbin/ip -6 route add $args dev lo done } set_down_loopback() { LC_ALL=C ip addr flush dev lo 2>&1 | grep -v "Nothing to flush" ip link set dev lo down } modprobe_net() { if is_yes "$IPV6_NETWORKING" && is_module "ipv6"; then _modprobe single ipv6 fi if is_yes "$IPX" && is_module "ipx"; then _modprobe single ipx fi } # calculate network prefix from given network mask calcprefix() { local old_IFS netmask prefix endp old_IFS=$IFS IFS='.' netmask=$(echo $1) IFS=$old_IFS prefix=0 endp=0 for n in $netmask; do for i in 128 64 32 16 8 4 2 1; do if [ $(($n & $i)) -ne 0 ]; then if [ $endp -eq 0 ]; then prefix=$(($prefix + 1)) else echo "32" return fi else endp=1 fi done done echo $prefix } # calculate network mask from given prefix # (c) 1999 Grzegorz Stanislawski calcnetmask() { local prefix a MASK MASK="" if [ "${1##[0-9]*}" ]; then prefix=32 else prefix=$1 fi for i in 1 2 3 4; do case $prefix in 7) a=254;; 6) a=252;; 5) a=248;; 4) a=240;; 3) a=224;; 2) a=192;; 1) a=128;; *) [ $prefix -ge 8 ] && a=255 [ $prefix -le 0 ] && a=0 ;; esac prefix="$(( $prefix - 8))" if [ -z "$MASK" ]; then MASK=$a else MASK=$MASK.$a fi done echo $MASK return } # Retrievies PPPD PID and real interface name from /var/run/ppp-*.pid get_ppp_device_and_pid () { if [ -f "/var/run/ppp-$DEVNAME.pid" ]; then eval $( { read PID; echo "PID='$PID'" read REALDEVICE; echo "REALDEVICE=$REALDEVICE" } < "/var/run/ppp-$DEVNAME.pid") fi if [ -z "$REALDEVICE" ]; then REALDEVICE=$DEVICE fi } # following function setups advanced routing rules # Olgierd Pieczul setup_ip_rules () { local args prio from src i prio if [ -f /etc/sysconfig/static-routes ]; then if is_yes "$1"; then i=10000 grep -E "^(from|to|iif|tos|fwmark|dev|pref|priority|prio)[[:blank:]]" /etc/sysconfig/static-routes | while read args; do prio="" if [ "${args##* prio }" = "$args" ]; then # no "prio" used in rule, use own prio prio="prio $i" i=$((i + 5)) fi /sbin/ip rule add $args $prio done elif is_no "$1"; then LC_ALL=C /sbin/ip rule show | grep -vE -e "from all lookup (main|default|local|253|254|255)[[:space:]]*\$" -e " map-to " | while read prio from src args; do [ "$src" = "all" ] && /sbin/ip rule delete $args || /sbin/ip rule delete $from $src $args done fi fi is_no "$IPV6_NETWORKING" && return if [ -f /etc/sysconfig/static-routes6 ]; then if is_yes "$1"; then i=10000 grep -E "^(from|to|iif|tos|fwmark|dev|pref|priority|prio)[[:blank:]]" /etc/sysconfig/static-routes6 | while read args; do prio="" if [ "${args##* prio }" = "$args" ]; then # no "prio" used in rule, use own prio prio="prio $i" i=$((i + 5)) fi /sbin/ip -6 rule add $args $prio done elif is_no "$1"; then LC_ALL=C /sbin/ip -6 rule show | grep -vE -e "from all lookup (main|default|local|253|254|255)[[:space:]]*\$" -e " map-to " | while read prio from src args; do [ "$src" = "all" ] && /sbin/ip -6 rule delete $args || /sbin/ip -6 rule delete $from $src $args done fi fi } is_wireless_device () { if [ -x /sbin/iwconfig ]; then LC_ALL=C iwconfig "${1}" 2>&1 | grep -Fq "no wireless extensions" || return 0 fi return 1 } wireless_param() { device="$1" if [ "$2" = "br" ]; then prefix="${device}_" else prefix="" fi local val wlan_mode # wlan mode needs to be first wlan_mode="$(eval echo \$${prefix}WLAN_MODE)" && [ "$wlan_mode" ] && \ iwconfig ${device} mode "$wlan_mode" val="$(eval echo \$${prefix}WLAN_NICKNAME)" && [ "$val" ] && \ iwconfig ${device} nick "$val" val="$(eval echo \$${prefix}WLAN_NWID)" && [ "$val" ] && \ iwconfig ${device} nwid "$val" if [ "$wlan_mode" != "Managed" -a "$wlan_mode" != "managed" ]; then if val="$(eval echo \$${prefix}WLAN_FREQ)" && [ "$val" ]; then iwconfig ${device} freq "$val" elif val="$(eval echo \$${prefix}WLAN_CHANNEL)" && [ "$val" ]; then iwconfig ${device} channel "$val" fi fi val="$(eval echo \$${prefix}WLAN_SENS)" && [ "$val" ] && \ iwconfig ${device} sens "$val" val="$(eval echo \$${prefix}WLAN_AP)" && [ "$val" ] && \ iwconfig ${device} ap "$val" val="$(eval echo \$${prefix}WLAN_BITRATE)" && [ "$val" ] && \ iwconfig ${device} rate "$val" val="$(eval echo \$${prefix}WLAN_RTS_THRESHOLD)" && [ "$val" ] && \ iwconfig ${device} rts "$val" val="$(eval echo \$${prefix}WLAN_FRAGMENTATION_THRESHOLD)" && [ "$val" ] && \ iwconfig ${device} frag "$val" local wlan_encryption="$(eval echo \$${prefix}WLAN_ENCRYPTION)" local wlan_key="$(eval echo \$${prefix}WLAN_KEY)" # TODO: well, actually shouldn't set WLAN_KEY if other keys than current are set if [ "$wlan_key" ]; then # wlan key can contain index of key to set # to set other than current keys suffix with 1-4: local idx for idx in 1 2 3 4; do val="$(eval echo \$${prefix}WLAN_KEY_$idx)" [ "$val" ] || continue iwconfig ${device} key "[$idx]" "$val" done if val="$(eval echo \$${prefix}WLAN_KEY_CURRENT)" && [ "$val" ]; then iwconfig ${device} key "[$val]" else iwconfig ${device} key "$wlan_key" fi [ "$wlan_encryption" ] && iwconfig ${device} key "$wlan_encryption" fi if is_no "$wlan_encryption"; then iwconfig ${device} key off fi val="$(eval echo \$${prefix}WLAN_POWER)" && [ "$val" ] && \ iwconfig ${device} power "$val" val="$(eval echo \$${prefix}WLAN_TXPOWER)" && [ "$val" ] && \ iwconfig ${device} txpower "$val" val="$(eval echo \$${prefix}WLAN_RETRY)" && [ "$val" ] && \ iwconfig ${device} retry "$val" # essid should be last due to network rescanning by wlan devices val="$(eval echo \$${prefix}WLAN_ESSID)" && [ "$val" ] && \ iwconfig ${device} essid "$val" if is_yes "$(eval echo \$${prefix}WLAN_COMMIT)"; then iwconfig ${device} commit fi } # returns # 0 - no link # 1 - link ok # 2 - unsupported, unknown return check_mii_tool () { [ -x /sbin/mii-tool ] || return 2 local output=$(LC_ALL=C mii-tool $1 2>&1) echo $output | grep -Fq "link ok" && return 1 echo $output | grep -Fq "no link" && return 0 return 2 } # returns # 0 - link off # 1 - link on # 2 - unsupported, unknown return check_ethtool () { [ -x /sbin/ethtool ] || return 2 local output=$(LC_ALL=C ethtool $1 2>&1) echo $output | grep -Fq "Link detected: yes" && return 1 echo $output | grep -Fq "Link detected: no" && return 0 return 2 } # returns # 0 - radio off # 1 - radio on # 2 - unsupported check_iwconfig () { local output # rfkill state (are there devices with multiple rfkill buttons?) output=$(cat /sys/class/net/${1}/device/rfkill*/state 2> /dev/null) # 1 is rfkill not active [ "$output" = "1" ] && return 1 [ "$output" = "0" -o "$output" = "2" ] && return 0 [ -x /sbin/iwconfig ] || return 2 output=$(LC_ALL=C iwconfig "$1" 2>&1) # "radio off" is ipwxxx only "feature" (and there is no "radio on") echo "$output" | grep -Fq "radio off" && return 0 # XXX: need more generic checks for wifi return 2 } # returns # 0 - link down # 1 - link up # 2 - unknown/unsupported check_link_down () { local e i m timeout device max_timeout device="$1" max_timeout="$2" if [ ! -x /sbin/mii-tool -a ! -x /sbin/ethtool -a ! -x /sbin/iwconfig ]; then return 2 fi [ -z "$max_timeout" ] && max_timeout=10 if ! LC_ALL=C ip link show dev $device 2>/dev/null | grep -Fq UP; then ip link set dev $device up >/dev/null 2>&1 fi timeout=0 while [ $timeout -le $max_timeout ]; do check_ethtool $device e=$? check_iwconfig $device i=$? # trust ethtool and iwconfig if [ $i -eq 1 ] || [ $e -eq 1 ]; then return 1 fi # use mii check only if all other check are unsupported # (mii check lies too often) check_mii_tool $device m=$? if [ $m -eq 1 ] && [ $i -eq 2 ] && [ $e -eq 2 ]; then return 1 fi usleep 500000 timeout=$((timeout+1)) done # do not abort dhclient if all the checks are unsupported if [ $m -eq 2 ] && [ $i -eq 2 ] && [ $e -eq 2 ]; then return 2 fi return 0 }