mirror of
https://github.com/KusakabeShi/EtherGuard-VPN.git
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71 lines
1.4 KiB
Go
71 lines
1.4 KiB
Go
/* SPDX-License-Identifier: GPL-2.0
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*
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* Copyright (C) 2017-2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
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*/
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package main
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import (
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"errors"
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"net"
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"sync"
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)
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type RoutingTable struct {
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IPv4 *Trie
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IPv6 *Trie
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mutex sync.RWMutex
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}
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func (table *RoutingTable) AllowedIPs(peer *Peer) []net.IPNet {
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table.mutex.RLock()
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defer table.mutex.RUnlock()
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allowed := make([]net.IPNet, 0, 10)
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allowed = table.IPv4.AllowedIPs(peer, allowed)
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allowed = table.IPv6.AllowedIPs(peer, allowed)
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return allowed
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}
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func (table *RoutingTable) Reset() {
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table.mutex.Lock()
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defer table.mutex.Unlock()
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table.IPv4 = nil
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table.IPv6 = nil
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}
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func (table *RoutingTable) RemovePeer(peer *Peer) {
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table.mutex.Lock()
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defer table.mutex.Unlock()
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table.IPv4 = table.IPv4.RemovePeer(peer)
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table.IPv6 = table.IPv6.RemovePeer(peer)
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}
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func (table *RoutingTable) Insert(ip net.IP, cidr uint, peer *Peer) {
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table.mutex.Lock()
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defer table.mutex.Unlock()
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switch len(ip) {
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case net.IPv6len:
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table.IPv6 = table.IPv6.Insert(ip, cidr, peer)
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case net.IPv4len:
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table.IPv4 = table.IPv4.Insert(ip, cidr, peer)
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default:
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panic(errors.New("Inserting unknown address type"))
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}
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}
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func (table *RoutingTable) LookupIPv4(address []byte) *Peer {
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table.mutex.RLock()
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defer table.mutex.RUnlock()
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return table.IPv4.Lookup(address)
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}
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func (table *RoutingTable) LookupIPv6(address []byte) *Peer {
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table.mutex.RLock()
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defer table.mutex.RUnlock()
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return table.IPv6.Lookup(address)
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}
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