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#!/bin/sh |
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# Copyright (c) 2012 OpenWrt.org |
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. /lib/functions.sh |
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. /lib/functions/service.sh |
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. /lib/functions/network.sh |
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config_load network6 |
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local NAT="ip6tables -t nat" |
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conf_get() { |
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local __return="$1" |
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local __device="$2" |
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local __option="$3" |
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local __value=$(cat "/proc/sys/net/ipv6/conf/$__device/$__option") |
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eval "$__return=$__value" |
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} |
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conf_set() { |
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local device="$1" |
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local option="$2" |
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local value="$3" |
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echo "$value" > "/proc/sys/net/ipv6/conf/$device/$option" |
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} |
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stop_service() { |
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local __exe="$1" |
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SERVICE_PID_FILE="$2" |
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local __return="$3" |
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service_check "$__exe" && { |
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service_stop "$__exe" |
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[ -n "$__return" ] && eval "$__return=1" |
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} |
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rm -f "$SERVICE_PID_FILE" |
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} |
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start_service() { |
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local cmd="$1" |
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local pidfile="$2" |
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SERVICE_DAEMONIZE=1 |
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SERVICE_WRITE_PID=1 |
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SERVICE_PID_FILE="$pidfile" |
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service_start $cmd |
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} |
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resolve_network_add() { |
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local __section="$1" |
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local __device="$2" |
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local __return="$3" |
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local __cdevice |
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network_get_device __cdevice "$__section" |
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[ "$__cdevice" != "$__device" ] && return |
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eval "$__return"'="'"$__section"'"' |
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} |
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resolve_network() { |
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local __return="$1" |
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local __device="$2" |
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config_foreach resolve_network_add interface "$__device" "$__return" |
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} |
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setup_masquerading() { |
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local cmd="$1" |
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local chain="network6_masquerade_$2" |
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local device="$3" |
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$NAT -D POSTROUTING -j "$chain" 2>/dev/null && { |
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$NAT -F "$chain" 2>/dev/null |
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$NAT -X "$chain" 2>/dev/null |
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} |
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[ "$cmd" != "stop" ] && { |
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$NAT -N "$chain" |
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$NAT -A "$chain" -o "$device" -j MASQUERADE |
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$NAT -A POSTROUTING -j "$chain" |
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} |
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} |
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setup_npt_chain() { |
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local cmd="$1" |
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local network="$2" |
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local chain="network6_npt_$network" |
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[ "$cmd" != "start" ] && { |
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$NAT -D POSTROUTING -j "$chain" 2>/dev/null && { |
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$NAT -D PREROUTING -j "$chain" 2>/dev/null |
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$NAT -F "$chain" 2>/dev/null |
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$NAT -X "$chain" 2>/dev/null |
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} |
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} |
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[ "$cmd" != "stop" ] && { |
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$NAT -N "$chain" 2>/dev/null && { |
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$NAT -A PREROUTING -j "$chain" |
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$NAT -A POSTROUTING -j "$chain" |
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} |
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} |
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} |
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announce_prefix() { |
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local prefix="$1" |
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local network="$2" |
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local device="$3" |
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local cmd="$4" |
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local type="$5" |
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local addr=$(echo "$prefix" | cut -d/ -f1) |
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local rem=$(echo "$prefix" | cut -d/ -f2) |
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local length=$(echo "$rem" | cut -d, -f1) |
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local prefer="" |
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local valid="" |
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# If preferred / valid provided |
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[ "$rem" != "$length" ] && { |
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prefer=$(echo "$rem" | cut -d, -f2) |
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valid=$(echo "$rem" | cut -d, -f3) |
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} |
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# Get prefix configuration |
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local ula="" |
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local prefix_action="" |
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config_get ula global ula_prefix |
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config_get prefix_action "$network" prefix_action |
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[ -z "$prefix_action" ] && prefix_action="distribute" |
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# Always announce the ULA when doing NPT |
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[ "$prefix" == "$ula" -a "$prefix_action" == "npt" ] && prefix_action="distribute" |
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[ "$prefix_action" == "distribute" -o "$prefix_action" == "npt" ] && { |
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local msg='{"network": "'"$network"'", "prefix": "'"$addr"'", "length": '"$length" |
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[ -n "$valid" ] && msg="$msg"', "valid": '"$valid"', "preferred": '"$prefer" |
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[ -z "$cmd" ] && cmd=newprefix |
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[ "$prefix_action" == "npt" ] && msg="$msg"', "npt": 1' |
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[ "$type" == "secondary" ] && msg="$msg"', "secondary": 1' |
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# Detect MTU |
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local mtu |
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conf_get mtu "$device" mtu |
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msg="$msg"', "mtu": '"$mtu" |
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ubus call 6distributed "$cmd" "$msg}" |
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} |
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[ "$prefix_action" == "npt" ] && { |
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local chain="network6_npt_$network" |
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local ula_addr=$(echo "$ula" | cut -d/ -f1) |
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local ula_rem=$(echo "$ula" | cut -d/ -f2) |
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local ula_length=$(echo "$ula_rem" | cut -d, -f1) |
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local device="" |
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network_get_device device "$network" |
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[ "$length" -lt "$ula_length" ] && length="$ula_length" |
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[ "$cmd" == "delprefix" ] && cmd="-D $chain" || cmd="-A $chain" |
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local in="-i $device -d $addr/$length -j NETMAP --to $ula_addr/$ula_length" |
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local out="-o $device -s $ula_addr/$ula_length -j NETMAP --to $addr/$length" |
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setup_npt_chain start "$network" |
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$NAT $cmd $in |
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$NAT $cmd $out |
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} |
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} |
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disable_router() { |
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local network="$1" |
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# Notify the address distribution daemon |
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ubus call 6distributed deliface '{"network": "'"$network"'"}' |
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# Start RD & DHCPv6 service |
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local router_service |
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config_get router_service global router_service |
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if [ "$router_service" == "dnsmasq" ]; then |
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rm -f "/var/etc/dnsmasq.d/ipv6-router-$network.conf" |
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/etc/init.d/dnsmasq restart |
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else |
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stop_service /usr/sbin/6relayd "/var/run/ipv6-router-$network.pid" |
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fi |
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} |
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restart_relay_slave() { |
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local __section="$1" |
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local __master="$2" |
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network_is_up "$__section" || return |
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local __device="" |
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network_get_device __device "$__section" |
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local __cmaster="" |
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config_get __cmaster "$__section" relay_master |
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[ "$__master" == "$__cmaster" ] && { |
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disable_interface "$__section" |
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enable_interface "$__section" "$__device" |
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} |
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} |
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add_relay_slave() { |
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local __section="$1" |
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local __return="$2" |
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local __master="$3" |
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local __mode="$4" |
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network_is_up "$__section" || return |
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# Get device |
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local __device="" |
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network_get_device __device "$__section" |
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# Match master network |
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local __cmaster="" |
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config_get __cmaster "$__section" relay_master |
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[ "$__master" == "$__cmaster" ] || return |
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# Test slave mode |
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local __cmode="" |
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config_get __cmode "$__section" mode |
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[ "$__cmode" == "downstream" ] && __cmode="router" |
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# Don't start fallback interfaces if we are in forced-relay mode |
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[ "$__cmode" == "relay" -o "$__mode" == "fallback" ] || return |
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# Don't make non-relay or non-router interfaces slaves |
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[ "$__cmode" == "relay" -o "$__cmode" == "router" ] || return |
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# Disable any active distribution |
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[ "$__cmode" == "router" ] && disable_router "$__section" |
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# Configure interface to accept RA and send RS |
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conf_set "$__device" accept_ra 2 |
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conf_set "$__device" forwarding 2 |
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eval "$__return"'="$'"$__return"' '"$__device"'"' |
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} |
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stop_relay() { |
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local network="$1" |
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local pid_fallback="/var/run/ipv6-relay-fallback-$network.pid" |
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local pid_forced="/var/run/ipv6-relay-forced-$network.pid" |
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local was_fallback="" |
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stop_service /usr/sbin/6relayd "$pid_fallback" was_fallback |
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stop_service /usr/sbin/6relayd "$pid_forced" |
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# Reenable normal distribution on slave interfaces |
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[ -n "$was_fallback" ] && config_foreach restart_relay_slave interface "$network" |
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} |
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detect_forced_relay_mode() { |
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local __section="$1" |
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local __mode="$2" |
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local __cmode |
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config_get __cmode "$__section" mode |
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[ "$__cmode" == "relay" ] && eval "$__mode=forced" |
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} |
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restart_relay() { |
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local network="$1" |
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local mode="$2" |
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# Stop last active relay |
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stop_relay "$network" |
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# Detect if we have a forced-relay |
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[ -z "$mode" ] && config_foreach detect_forced_relay_mode interface mode |
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# Don't start without a mode |
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[ -z "$mode" ] && return |
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# Detect master device |
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local device="" |
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network_get_device device "$network" |
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# Generate command string |
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local cmd="/usr/sbin/6relayd -A $device" |
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local ifaces="" |
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config_foreach add_relay_slave interface ifaces "$network" "$mode" |
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# Start relay |
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local pid="/var/run/ipv6-relay-$mode-$network.pid" |
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[ -n "$ifaces" ] && start_service "$cmd $ifaces" "$pid" |
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# There are no slave interface, however indicate that we want to relay |
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[ -z "$ifaces" ] && touch "$pid" |
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} |
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setup_prefix_fallback() { |
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local cmd="$1" |
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local network="$2" |
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local device="$3" |
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stop_relay "$network" |
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restart_relay "$network" |
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setup_masquerading stop "$network" |
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[ "$cmd" != "stop" ] && { |
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local fallback="" |
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config_get fallback "$network" prefix_fallback |
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[ "$fallback" == "relay" ] && restart_relay "$network" fallback |
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[ "$fallback" == "masquerade" ] && setup_masquerading start "$network" "$device" |
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} |
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} |
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restart_master_relay() { |
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local network="$1" |
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local mode="$2" |
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# Disable active relaying to this interface |
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config_get relay_master "$network" relay_master |
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[ -z "$relay_master" ] && return |
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network_is_up "$relay_master" || return |
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# Detect running mode |
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local pid_fallback="/var/run/ipv6-relay-fallback-$relay_master.pid" |
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local pid_forced="/var/run/ipv6-relay-forced-$relay_master.pid" |
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[ -z "$mode" -a -f "$pid_fallback" ] && mode="fallback" |
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[ -z "$mode" -a -f "$pid_forced" ] && mode="forced" |
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# Restart relay if running or start requested |
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[ -n "$mode" ] && restart_relay "$relay_master" "$mode" |
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} |
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set_site_border() { |
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local network="$1" |
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local device="$2" |
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local fwscript="/var/etc/ipv6-firewall.d/site-border-$network.sh" |
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local chain="ipv6-site-border-$network" |
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if [ -n "$device" ]; then |
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local site_border |
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config_get_bool site_border "$network" site_border 1 |
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[ "$site_border" == "1" ] || return |
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mkdir -p $(dirname "$fwscript") |
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echo "ip6tables -N $chain" > "$fwscript" |
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echo "ip6tables -F $chain" >> "$fwscript" |
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echo "ip6tables -A $chain -o $device -j REJECT --reject-with icmp6-no-route" >> "$fwscript" |
|
|
|
|
echo "ip6tables -A $chain -i $device -j REJECT --reject-with icmp6-no-route" >> "$fwscript" |
|
|
|
|
echo "ip6tables -A ipv6-site-border -j $chain" >> "$fwscript" |
|
|
|
|
. "$fwscript" |
|
|
|
|
else |
|
|
|
|
[ -f "$fwscript" ] || return |
|
|
|
|
rm -f "$fwscript" |
|
|
|
|
ip6tables -D ipv6-site-border -j "$chain" |
|
|
|
|
ip6tables -F "$chain" |
|
|
|
|
ip6tables -X "$chain" |
|
|
|
|
fi |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
set_forward_border() { |
|
|
|
|
local network="$1" |
|
|
|
|
local device="$2" |
|
|
|
|
local method="$3" |
|
|
|
|
local fwscript="/var/etc/ipv6-firewall.d/forward-border-$network.sh" |
|
|
|
|
|
|
|
|
|
if [ "$method" == "enable" ]; then |
|
|
|
|
mkdir -p $(dirname "$fwscript") |
|
|
|
|
echo "ip6tables -A forwarding_rule -o \"$device\" -j REJECT --reject-with icmp6-no-route" > "$fwscript" |
|
|
|
|
. "$fwscript" |
|
|
|
|
else |
|
|
|
|
[ -f "$fwscript" ] || return |
|
|
|
|
rm -f "$fwscript" |
|
|
|
|
# Racy race race |
|
|
|
|
ip6tables -D forwarding_rule -o "$device" -j REJECT --reject-with icmp6-no-route 2>/dev/null |
|
|
|
|
ip6tables -D forwarding_rule -o "$device" -j REJECT --reject-with icmp6-no-route 2>/dev/null |
|
|
|
|
fi |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
disable_interface() { |
|
|
|
|
local network="$1" |
|
|
|
|
|
|
|
|
|
# Delete all prefixes routed to this interface |
|
|
|
|
ubus call 6distributed delprefix '{"network": "'"$network"'"}' |
|
|
|
|
|
|
|
|
|
# Restart Relay |
|
|
|
|
restart_master_relay "$network" |
|
|
|
|
|
|
|
|
|
# Disable distribution |
|
|
|
|
disable_router "$network" |
|
|
|
|
|
|
|
|
|
# Disable any active relays, masquerading rules and NPT rules |
|
|
|
|
stop_relay "$network" |
|
|
|
|
setup_masquerading stop "$network" |
|
|
|
|
setup_npt_chain stop "$network" |
|
|
|
|
|
|
|
|
|
# Disable DHCPv6 client if enabled, state script will take care |
|
|
|
|
stop_service /usr/sbin/odhcp6c "/var/run/ipv6-dhcpv6-$network.pid" |
|
|
|
|
|
|
|
|
|
# Stop site-border |
|
|
|
|
set_site_border "$network" |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
enable_ula_prefix() { |
|
|
|
|
local network="$1" |
|
|
|
|
local ula="$2" |
|
|
|
|
local device="$3" |
|
|
|
|
[ -z "$ula" ] && ula="global" |
|
|
|
|
|
|
|
|
|
# ULA-integration |
|
|
|
|
local ula_prefix="" |
|
|
|
|
config_get ula_prefix "$ula" ula_prefix |
|
|
|
|
|
|
|
|
|
# ULA auto configuration (first init) |
|
|
|
|
[ "$ula_prefix" == "auto" ] && { |
|
|
|
|
local r1="" |
|
|
|
|
local r2="" |
|
|
|
|
local r3="" |
|
|
|
|
|
|
|
|
|
# Sometimes results are empty, therefore try until it works... |
|
|
|
|
while [ -z "$r1" -o -z "$r2" -o -z "$r3" ]; do |
|
|
|
|
r1=$(printf "%02x" $(($(</dev/urandom tr -dc 0-9 | dd bs=9 count=1) % 256))) |
|
|
|
|
r2=$(printf "%01x" $(($(</dev/urandom tr -dc 0-9 | dd bs=9 count=1) % 65536))) |
|
|
|
|
r3=$(printf "%01x" $(($(</dev/urandom tr -dc 0-9 | dd bs=9 count=1) % 65536))) |
|
|
|
|
done |
|
|
|
|
|
|
|
|
|
ula_prefix="fd$r1:$r2:$r3::/48" |
|
|
|
|
|
|
|
|
|
# Save prefix so it will be preserved across reboots |
|
|
|
|
config_set "$ula" ula_prefix "$ula_prefix" |
|
|
|
|
uci_set network6 "$ula" ula_prefix "$ula_prefix" |
|
|
|
|
uci_commit network6 |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
# Announce ULA |
|
|
|
|
[ -n "$ula_prefix" ] && announce_prefix "$ula_prefix" "$network" "$device" newprefix secondary |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
enable_static() { |
|
|
|
|
local network="$1" |
|
|
|
|
local device="$2" |
|
|
|
|
|
|
|
|
|
# Enable global forwarding |
|
|
|
|
local global_forward |
|
|
|
|
conf_get global_forward all forwarding |
|
|
|
|
[ "$global_forward" != "1" ] && conf_set all forwarding 1 |
|
|
|
|
|
|
|
|
|
# Configure device |
|
|
|
|
conf_set "$device" forwarding 1 |
|
|
|
|
conf_set "$device" accept_ra 1 |
|
|
|
|
|
|
|
|
|
# Enable ULA |
|
|
|
|
enable_ula_prefix "$network" global "$device" |
|
|
|
|
# Compatibility (deprecated) |
|
|
|
|
enable_ula_prefix "$network" "$network" "$device" |
|
|
|
|
|
|
|
|
|
# Announce all static prefixes |
|
|
|
|
config_list_foreach "$network" static_prefix announce_prefix "$network" "$device" |
|
|
|
|
|
|
|
|
|
# start relay if there are forced relay members |
|
|
|
|
restart_relay "$network" |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
enable_router() { |
|
|
|
|
local network="$1" |
|
|
|
|
local device="$2" |
|
|
|
|
|
|
|
|
|
# Get IPv6 prefixes |
|
|
|
|
local length |
|
|
|
|
config_get length "$network" advertise_prefix |
|
|
|
|
[ -z "$length" ] && length=64 |
|
|
|
|
[ "$length" -ne "0" ] && ubus call 6distributed newiface '{"network": "'"$network"'", "iface": "'"$device"'", "length": '"$length"'}' |
|
|
|
|
|
|
|
|
|
# Start RD & DHCPv6 service |
|
|
|
|
local router_service |
|
|
|
|
config_get router_service global router_service |
|
|
|
|
|
|
|
|
|
local always_default |
|
|
|
|
config_get_bool always_default "$network" always_default 0 |
|
|
|
|
|
|
|
|
|
if [ "$router_service" == "dnsmasq" ]; then |
|
|
|
|
local dnsmasq_opts |
|
|
|
|
config_get dnsmasq_opts "$network" dnsmasq_opts |
|
|
|
|
[ -z "$dnsmasq_opts" ] && dnsmasq_opts="ra-names,24h" |
|
|
|
|
|
|
|
|
|
local conf="/var/etc/dnsmasq.d/ipv6-router-$network.conf" |
|
|
|
|
mkdir -p $(dirname $conf) |
|
|
|
|
echo "dhcp-range=::00ff,::ffff,constructor:$device,$dnsmasq_opts" > $conf |
|
|
|
|
echo "enable-ra" >> $conf |
|
|
|
|
/etc/init.d/dnsmasq restart |
|
|
|
|
else |
|
|
|
|
local opts="" |
|
|
|
|
[ "$always_default" == "1" ] && opts="-u" |
|
|
|
|
|
|
|
|
|
local pid="/var/run/ipv6-router-$network.pid" |
|
|
|
|
start_service "/usr/sbin/6relayd -S $opts . $device" "$pid" |
|
|
|
|
fi |
|
|
|
|
|
|
|
|
|
# Try relaying if necessary |
|
|
|
|
restart_master_relay "$network" |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
enable_dhcpv6() { |
|
|
|
|
local network="$1" |
|
|
|
|
local device="$2" |
|
|
|
|
|
|
|
|
|
# Configure DHCPv6-client |
|
|
|
|
local dhcp6_opts="$device" |
|
|
|
|
|
|
|
|
|
# Configure DHCPv6-client (e.g. requested prefix) |
|
|
|
|
local request_prefix |
|
|
|
|
config_get request_prefix "$network" request_prefix |
|
|
|
|
[ -z "$request_prefix" ] && request_prefix="auto" |
|
|
|
|
[ "$request_prefix" != "no" ] && { |
|
|
|
|
[ "$request_prefix" == "auto" ] && request_prefix=0 |
|
|
|
|
dhcp6_opts="-P$request_prefix $dhcp6_opts" |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
# Start DHCPv6 client |
|
|
|
|
local pid="/var/run/ipv6-dhcpv6-$network.pid" |
|
|
|
|
start_service "/usr/sbin/odhcp6c -s/lib/ipv6/dhcpv6.sh $dhcp6_opts" "$pid" |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
enable_6to4() { |
|
|
|
|
local network="$1" |
|
|
|
|
local device="$2" |
|
|
|
|
local mode="$3" |
|
|
|
|
|
|
|
|
|
local prefixlen="48" |
|
|
|
|
[ "$mode" == "6rd" ] && { |
|
|
|
|
local ip4prefix=$(uci_get network "$network" ip4prefixlen 0) |
|
|
|
|
local ip6prefix=$(uci_get network "$network" ip6prefixlen 32) |
|
|
|
|
prefixlen=$(($ip6prefix + 32 - $ip4prefix)) |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
local prefix="" |
|
|
|
|
network_get_ipaddr6 prefix "$network" |
|
|
|
|
|
|
|
|
|
announce_prefix "$prefix/$prefixlen" "$network" "$device" |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
enable_interface() |
|
|
|
|
{ |
|
|
|
|
local network="$1" |
|
|
|
|
local device="$2" |
|
|
|
|
local mode="" |
|
|
|
|
|
|
|
|
|
config_get mode "$network" mode |
|
|
|
|
[ -n "$mode" -a "$mode" != "none" ] || return |
|
|
|
|
|
|
|
|
|
# Compatibility with old mode names |
|
|
|
|
[ "$mode" == "downstream" ] && mode=router |
|
|
|
|
[ "$mode" == "upstream" ] && mode=dhcpv6 |
|
|
|
|
|
|
|
|
|
# Enable site-border |
|
|
|
|
[ "$mode" == "static" -o "$mode" == "dhcpv6" -o "$mode" == "6to4" -o "$mode" == "6in4" ] && set_site_border "$network" "$device" |
|
|
|
|
|
|
|
|
|
# Run mode startup code |
|
|
|
|
enable_static "$network" "$device" |
|
|
|
|
[ "$mode" == "dhcpv6" ] && enable_dhcpv6 "$network" "$device" |
|
|
|
|
[ "$mode" == "router" ] && enable_router "$network" "$device" |
|
|
|
|
[ "$mode" == "6to4" -o "$mode" == "6rd" ] && enable_6to4 "$network" "$device" "$mode" |
|
|
|
|
[ "$mode" == "relay" ] && restart_master_relay "$network" forced |
|
|
|
|
} |