140 lines
3.4 KiB
Bash
140 lines
3.4 KiB
Bash
|
# tayga.sh - NAT64 backend
|
||
|
|
|
||
|
|
find_tayga_wanif4() {
|
||
|
|
local if=$(ip -4 r l e 0.0.0.0/0); if="${if#default* dev }"; if="${if%% *}"
|
||
|
|
[ -n "$if" ] && grep -qs "^ *$if:" /proc/net/dev && echo "$if"
|
||
|
|
}
|
||
|
|
|
||
|
|
find_tayga_wanip4() {
|
||
|
|
local ip=$(ip -4 a s dev "$1"); ip="${ip#*inet }"
|
||
|
|
echo "${ip%%[^0-9.]*}"
|
||
|
|
}
|
||
|
|
|
||
|
|
find_tayga_wanif6() {
|
||
|
|
local if=$(ip -6 r l e ::/0); if="${if#default* dev }"; if="${if%% *}"
|
||
|
|
[ -n "$if" ] && grep -qs "^ *$if:" /proc/net/dev && echo "$if"
|
||
|
|
}
|
||
|
|
|
||
|
|
find_tayga_wanip6() {
|
||
|
|
local ip=$(ip -6 a s dev "$1"); ip="${ip#*inet6 }"
|
||
|
|
echo "${ip%%[^0-9A-Fa-f:]*}"
|
||
|
|
}
|
||
|
|
|
||
|
|
# Hook into scan_interfaces() to synthesize a .device option
|
||
|
|
# This is needed for /sbin/ifup to properly dispatch control
|
||
|
|
# to setup_interface_tayga() even if no .ifname is set in
|
||
|
|
# the configuration.
|
||
|
|
scan_tayga() {
|
||
|
|
config_set "$1" device "tayga-$1"
|
||
|
|
}
|
||
|
|
|
||
|
|
coldplug_interface_tayga() {
|
||
|
|
setup_interface_tayga "tayga-$1" "$1"
|
||
|
|
}
|
||
|
|
|
||
|
|
conf_rule_add() {
|
||
|
|
local cfg="$1"
|
||
|
|
local tmpconf="$2"
|
||
|
|
local ipv4_addr ipv6_addr
|
||
|
|
config_get ipv4_addr "$cfg" ipv4_addr ""
|
||
|
|
config_get ipv6_addr "$cfg" ipv6_addr ""
|
||
|
|
[ -n "$ipv4_addr" ] && [ -n "$ipv6_addr" ] &&
|
||
|
|
echo "map $ipv4_addr $ipv6_addr" >>$tmpconf
|
||
|
|
}
|
||
|
|
|
||
|
|
setup_interface_tayga() {
|
||
|
|
local iface="$1"
|
||
|
|
local cfg="$2"
|
||
|
|
local link="tayga-$cfg"
|
||
|
|
|
||
|
|
local ipv4_addr ipv6_addr prefix dynamic_pool
|
||
|
|
|
||
|
|
config_get ipv4_addr "$cfg" ipv4_addr
|
||
|
|
config_get ipv6_addr "$cfg" ipv6_addr
|
||
|
|
config_get prefix "$cfg" prefix
|
||
|
|
config_get dynamic_pool "$cfg" dynamic_pool
|
||
|
|
|
||
|
|
local args
|
||
|
|
|
||
|
|
include /lib/network
|
||
|
|
scan_interfaces
|
||
|
|
|
||
|
|
local wanip4=$(uci_get network "$cfg" ipv4addr)
|
||
|
|
local wanip6=$(uci_get network "$cfg" ipv6addr)
|
||
|
|
|
||
|
|
local wanif4=$(find_tayga_wanif4)
|
||
|
|
local wanif6=$(find_tayga_wanif6)
|
||
|
|
|
||
|
|
[ -z "$wanip4" ] && {
|
||
|
|
[ -n "$wanif4" ] && {
|
||
|
|
wanip4=$(find_tayga_wanip4 "$wanif4")
|
||
|
|
uci_set_state network "$cfg" wan4_device "$wanif4"
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
[ -z "$wanip6" ] && {
|
||
|
|
[ -n "$wanif6" ] && {
|
||
|
|
wanip6=$(find_tayga_wanip6 "$wanif6")
|
||
|
|
uci_set_state network "$cfg" wan6_device "$wanif6"
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
[ -n "$wanip4" ] && [ -n "$wanip6" ] || {
|
||
|
|
echo "Cannot determine local IPv4 and IPv6 addressed for tayga NAT64 $cfg - skipping"
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
local tmpconf="/var/etc/tayga-$cfg.conf"
|
||
|
|
args="-c $tmpconf"
|
||
|
|
mkdir -p /var/etc
|
||
|
|
mkdir -p /var/run/tayga/$cfg
|
||
|
|
|
||
|
|
echo "tun-device $link" >$tmpconf
|
||
|
|
echo "ipv4-addr $ipv4_addr" >>$tmpconf
|
||
|
|
[ -n "$ipv6_addr" ] &&
|
||
|
|
echo "ipv6-addr $ipv6_addr" >>$tmpconf
|
||
|
|
[ -n "$prefix" ] &&
|
||
|
|
echo "prefix $prefix" >>$tmpconf
|
||
|
|
|
||
|
|
config_foreach conf_rule_add map_rule "$tmpconf"
|
||
|
|
|
||
|
|
[ -n "$dynamic_pool" ] &&
|
||
|
|
echo "dynamic-pool $dynamic_pool" >>$tmpconf
|
||
|
|
echo "data-dir /var/run/tayga/$cfg" >>$tmpconf
|
||
|
|
|
||
|
|
# creating the tunnel below will trigger a net subsystem event
|
||
|
|
# prevent it from touching or iface by disabling .auto here
|
||
|
|
uci_set_state network "$cfg" ifname $link
|
||
|
|
uci_set_state network "$cfg" auto 0
|
||
|
|
|
||
|
|
tayga $args --mktun
|
||
|
|
ip link set "$link" up
|
||
|
|
|
||
|
|
ip addr add "$wanip4" dev "$link"
|
||
|
|
ip addr add "$wanip6" dev "$link"
|
||
|
|
|
||
|
|
[ -n "$dynamic_pool" ] &&
|
||
|
|
ip -4 route add "$dynamic_pool" dev "$link"
|
||
|
|
[ -n "$prefix" ] &&
|
||
|
|
ip -6 route add "$prefix" dev "$link"
|
||
|
|
|
||
|
|
start-stop-daemon -S -x tayga -- $args -p /var/run/$link.pid
|
||
|
|
|
||
|
|
env -i ACTION="ifup" DEVICE="$link" INTERFACE="$cfg" PROTO="tayga" \
|
||
|
|
/sbin/hotplug-call iface
|
||
|
|
}
|
||
|
|
|
||
|
|
stop_interface_tayga() {
|
||
|
|
local cfg="$1"
|
||
|
|
local link="tayga-$cfg"
|
||
|
|
|
||
|
|
env -i ACTION="ifdown" DEVICE="$link" INTERFACE="$cfg" PROTO="tayga" \
|
||
|
|
/sbin/hotplug-call iface
|
||
|
|
|
||
|
|
service_kill tayga "/var/run/$link.pid"
|
||
|
|
|
||
|
|
ip link set "$link" down
|
||
|
|
ip addr flush dev "$link"
|
||
|
|
ip route flush dev "$link"
|
||
|
|
}
|