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. /usr/share/libubox/jshn.sh
. /usr/share/wginstaller/wg.sh
wg_timeout () {
local int=$1
handshake=$(wg show $int latest-handshakes | awk '{print $2}')
timeout=$(uci get wgserver.@server[0].timeout_handshake)
if [ $handshake -ge $timeout ]; then
echo "1"
else
echo "0"
fi
}
wg_check_interface () {
local int=$1
if [ $(wg_timeout $int) -eq "1" ]; then
ip link del dev $int
fi
}
wg_check_interfaces () {
wg_interfaces=$(wg show interfaces)
for interface in $wg_interfaces; do
wg_check_interface $interface
done
}
wg_get_usage () {
num_interfaces=$(wg show interfaces | wc -w)
json_init
json_add_int "num_interfaces" $num_interfaces
echo $(json_dump)
}
wg_register () {
local uplink_bw=$1
local mtu=$2
local public_key=$3
base_prefix=$(uci get wgserver.@server[0].base_prefix)
port_start=$(uci get wgserver.@server[0].port_start)
port_end=$(uci get wgserver.@server[0].port_end)
port=$(next_port $port_start $port_end)
ifname="wg_$port"
offset=$(($port - $port_start))
gw_ip=$(owipcalc $base_prefix add $offset next 128) # gateway ip
gw_ip_assign="${gw_ip}/128"
gw_key=$(uci get wgserver.@server[0].wg_key)
gw_pub=$(uci get wgserver.@server[0].wg_pub)
wg_server_pubkey=$(cat $gw_pub)
# create wg tunnel
ip link add dev $ifname type wireguard
wg set $ifname listen-port $port private-key $gw_key peer $public_key allowed-ips ::0/0
ip -6 a a $gw_ip_assign dev $ifname
ip -6 a a fe80::1/64 dev $ifname
ip link set up dev $ifname
ip link set mtu $mtu dev $ifname
# craft return address
json_init
json_add_string "pubkey" $wg_server_pubkey
json_add_string "gw_ip" $gw_ip_assign
json_add_int "port" $port
echo $(json_dump)
}