402 lines
9.4 KiB
Bash
402 lines
9.4 KiB
Bash
#!/bin/sh
|
|
# Copyright (c) 2012 OpenWrt.org
|
|
. /lib/functions.sh
|
|
. /lib/functions/service.sh
|
|
. /lib/functions/network.sh
|
|
|
|
config_load network6
|
|
|
|
|
|
conf_get() {
|
|
local __return="$1"
|
|
local __device="$2"
|
|
local __option="$3"
|
|
local __value=$(cat "/proc/sys/net/ipv6/conf/$device/$option")
|
|
eval "$__return=$__value"
|
|
}
|
|
|
|
|
|
conf_set() {
|
|
local device="$1"
|
|
local option="$2"
|
|
local value="$3"
|
|
echo "$value" > "/proc/sys/net/ipv6/conf/$device/$option"
|
|
}
|
|
|
|
|
|
stop_service() {
|
|
local __exe="$1"
|
|
SERVICE_PID_FILE="$2"
|
|
local __return="$3"
|
|
|
|
service_check "$__exe" && {
|
|
service_stop "$__exe"
|
|
[ -n "$__return" ] && eval "$__return=1"
|
|
}
|
|
rm -f "$SERVICE_PID_FILE"
|
|
}
|
|
|
|
|
|
start_service() {
|
|
local cmd="$1"
|
|
local pidfile="$2"
|
|
|
|
SERVICE_DAEMONIZE=1
|
|
SERVICE_WRITE_PID=1
|
|
SERVICE_PID_FILE="$pidfile"
|
|
service_start $cmd
|
|
}
|
|
|
|
|
|
resolve_network_add() {
|
|
local __section="$1"
|
|
local __device="$2"
|
|
local __return="$3"
|
|
local __cdevice
|
|
network_get_device __cdevice "$__section"
|
|
[ "$__cdevice" != "$__device" ] && return
|
|
|
|
eval "$__return"'="'"$__section"'"'
|
|
}
|
|
|
|
|
|
resolve_network() {
|
|
local __return="$1"
|
|
local __device="$2"
|
|
config_foreach resolve_network_add interface "$__device" "$__return"
|
|
}
|
|
|
|
|
|
announce_prefix() {
|
|
local prefix="$1"
|
|
local network="$2"
|
|
local cmd="$3"
|
|
|
|
local addr=$(echo "$prefix" | cut -d/ -f1)
|
|
local rem=$(echo "$prefix" | cut -d/ -f2)
|
|
local length=$(echo "$rem" | cut -d, -f1)
|
|
local prefer=""
|
|
local valid=""
|
|
|
|
# If preferred / valid provided
|
|
[ "$rem" != "$length" ] && {
|
|
prefer=$(echo "$rem" | cut -d, -f2)
|
|
valid=$(echo "$rem" | cut -d, -f3)
|
|
}
|
|
|
|
local msg='{"network": "'"$network"'", "prefix": "'"$addr"'", "length": '"$length"
|
|
[ -n "$valid" ] && msg="$msg"', "valid": '"$valid"', "preferred": '"$prefer"
|
|
[ -z "$cmd" ] && cmd=newprefix
|
|
|
|
ubus call 6distributed "$cmd" "$msg}"
|
|
}
|
|
|
|
|
|
disable_router() {
|
|
local network="$1"
|
|
|
|
# Notify the address distribution daemon
|
|
ubus call 6distributed deliface '{"network": "'"$network"'"}'
|
|
|
|
# Disable advertisement daemon
|
|
stop_service /usr/sbin/6relayd "/var/run/ipv6-router-$network.pid"
|
|
}
|
|
|
|
|
|
restart_relay_slave() {
|
|
local __section="$1"
|
|
local __master="$2"
|
|
|
|
network_is_up "$__section" || return
|
|
|
|
local __device=""
|
|
network_get_device __device "$__section"
|
|
|
|
local __cmaster=""
|
|
config_get __cmaster "$__section" relay_master
|
|
|
|
[ "$__master" == "$__cmaster" ] && {
|
|
disable_interface "$__section"
|
|
enable_interface "$__section" "$__device"
|
|
}
|
|
}
|
|
|
|
|
|
add_relay_slave() {
|
|
local __section="$1"
|
|
local __return="$2"
|
|
local __master="$3"
|
|
local __mode="$4"
|
|
|
|
network_is_up "$__section" || return
|
|
|
|
# Get device
|
|
local __device=""
|
|
network_get_device __device "$__section"
|
|
|
|
# Match master network
|
|
local __cmaster=""
|
|
config_get __cmaster "$__section" relay_master
|
|
[ "$__master" == "$__cmaster" ] || return
|
|
|
|
# Test slave mode
|
|
local __cmode=""
|
|
config_get __cmode "$__section" mode
|
|
[ "$__cmode" == "downstream" ] && __cmode="router"
|
|
|
|
# Don't start fallback interfaces if we are in forced-relay mode
|
|
[ "$__cmode" == "relay" -o "$__mode" == "fallback" ] || return
|
|
|
|
# Don't make non-relay or non-router interfaces slaves
|
|
[ "$__cmode" == "relay" -o "$__cmode" == "router" ] || return
|
|
|
|
# Disable any active distribution
|
|
[ "$__cmode" == "router" ] && disable_router "$__section"
|
|
|
|
# Configure interface to accept RA and send RS
|
|
conf_set "$__device" accept_ra 2
|
|
conf_set "$__device" forwarding 2
|
|
|
|
eval "$__return"'="$'"$__return"' '"$__device"'"'
|
|
}
|
|
|
|
|
|
stop_relay() {
|
|
local network="$1"
|
|
local pid_fallback="/var/run/ipv6-relay-fallback-$network.pid"
|
|
local pid_forced="/var/run/ipv6-relay-forced-$network.pid"
|
|
local was_fallback=""
|
|
|
|
stop_service /usr/sbin/6relayd "$pid_fallback" was_fallback
|
|
stop_service /usr/sbin/6relayd "$pid_forced"
|
|
|
|
# Reenable normal distribution on slave interfaces
|
|
[ -n "$was_fallback" ] && config_foreach restart_relay_slave interface "$network"
|
|
}
|
|
|
|
|
|
detect_forced_relay_mode() {
|
|
local __section="$1"
|
|
local __mode="$2"
|
|
|
|
local __cmode
|
|
config_get __cmode "$__section" mode
|
|
[ "$__cmode" == "relay" ] && eval "$__mode=forced"
|
|
}
|
|
|
|
|
|
restart_relay() {
|
|
local network="$1"
|
|
local mode="$2"
|
|
|
|
# Stop last active relay
|
|
stop_relay "$network"
|
|
|
|
# Detect if we have a forced-relay
|
|
[ -z "$mode" ] && config_foreach detect_forced_relay_mode interface mode
|
|
|
|
# Don't start without a mode
|
|
[ -z "$mode" ] && return
|
|
|
|
# Detect master device
|
|
local device=""
|
|
network_get_device device "$network"
|
|
|
|
# Generate command string
|
|
local cmd="/usr/sbin/6relayd -A $device"
|
|
local ifaces=""
|
|
config_foreach add_relay_slave interface ifaces "$network" "$mode"
|
|
|
|
# Start relay
|
|
local pid="/var/run/ipv6-relay-$mode-$network.pid"
|
|
[ -n "$ifaces" ] && start_service "$cmd $ifaces" "$pid"
|
|
|
|
# There are no slave interface, however indicate that we want to relay
|
|
[ -z "$ifaces" ] && touch "$pid"
|
|
}
|
|
|
|
|
|
restart_master_relay() {
|
|
local network="$1"
|
|
local mode="$2"
|
|
local pid_fallback="/var/run/ipv6-relay-fallback-$network.pid"
|
|
local pid_forced="/var/run/ipv6-relay-forced-$network.pid"
|
|
|
|
# Disable active relaying to this interface
|
|
config_get relay_master "$network" relay_master
|
|
[ -z "$relay_master" ] && return
|
|
network_is_up "$relay_master" || return
|
|
|
|
# Detect running mode
|
|
[ -z "$mode" && -f "$pid_fallback" ] && mode="fallback"
|
|
[ -z "$mode" && -f "$pid_forced" ] && mode="forced"
|
|
|
|
# Restart relay if running or start requested
|
|
[ -n "$mode" ] && restart_relay "$relay_master" "$mode"
|
|
}
|
|
|
|
|
|
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 relay
|
|
stop_relay "$network"
|
|
|
|
# Disable DHCPv6 client if enabled, state script will take care
|
|
stop_service /usr/sbin/odhcp6c "/var/run/ipv6-dhcpv6-$network.pid"
|
|
}
|
|
|
|
|
|
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 "$device" accept_ra 1
|
|
conf_set "$device" forwarding 1
|
|
|
|
# ULA-integration
|
|
local ula_prefix=""
|
|
config_get ula_prefix "$network" ula_prefix
|
|
|
|
# ULA auto configuration (first init)
|
|
[ "$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:$r3::/48"
|
|
|
|
# Save prefix so it will be preserved across reboots
|
|
uci_set network6 "$network" ula_prefix "$ula_prefix"
|
|
uci_commit network6
|
|
}
|
|
|
|
# Announce ULA
|
|
[ -n "$ula_prefix" ] && announce_prefix $ula_prefix $network
|
|
|
|
# Announce all static prefixes
|
|
config_list_foreach "$network" static_prefix announce_prefix $network
|
|
|
|
# start relay if there are forced relay members
|
|
restart_relay "$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": '"$length"'}'
|
|
|
|
# Start RD & DHCPv6 service
|
|
local pid="/var/run/ipv6-router-$network.pid"
|
|
|
|
# Start server
|
|
start_service "/usr/sbin/6relayd -S . $device" "$pid"
|
|
|
|
# Try relaying if necessary
|
|
restart_master_relay "$network"
|
|
|
|
# start relay if there are forced relay members
|
|
restart_relay "$network"
|
|
}
|
|
|
|
|
|
enable_dhcpv6() {
|
|
local network="$1"
|
|
local device="$2"
|
|
|
|
# Configure device
|
|
conf_set "$device" accept_ra 2
|
|
conf_set "$device" forwarding 2
|
|
|
|
# Trigger RS
|
|
conf_set "$device" disable_ipv6 1
|
|
conf_set "$device" disable_ipv6 0
|
|
|
|
# Configure DHCPv6-client
|
|
local dhcp6_opts="$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"
|
|
|
|
# Refresh RA on all interfaces
|
|
for pid in /var/run/ipv6-router-*.pid; do
|
|
kill -SIGUSR1 $(cat "$pid")
|
|
done
|
|
}
|
|
|
|
|
|
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"
|
|
}
|
|
|
|
|
|
enable_interface()
|
|
{
|
|
local network="$1"
|
|
local device="$2"
|
|
local mode=""
|
|
config_get mode "$network" mode
|
|
|
|
# Compatibility with old mode names
|
|
[ "$mode" == "downstream" ] && mode=router
|
|
[ "$mode" == "upstream" ] && mode=dhcpv6
|
|
|
|
# Run mode startup code
|
|
[ "$mode" == "dhcpv6" -o "$mode" == "static" ] && 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
|
|
}
|