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Add WG_EXTENSION_HOOKS so internal behavior can be customized easier

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This commit is contained in:
Ludvig Strigeus 2018-11-23 23:28:21 +01:00
parent 23b4e819ad
commit 59650dcd55
2 changed files with 9 additions and 2 deletions
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3
wireguard.cpp
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@ -354,7 +354,6 @@ void WireguardProcessor::HandleUdpPacket(Packet *packet, bool overload) {
}
}
// On incoming packet to the tun interface.
WireguardProcessor::PacketResult WireguardProcessor::HandleTunPacket2(Packet *packet) {
uint8 *data = packet->data;
@ -369,7 +368,7 @@ WireguardProcessor::PacketResult WireguardProcessor::HandleTunPacket2(Packet *pa
ip_version = *data >> 4;
if (ip_version == 4) {
uint32 ip = ReadBE32(data + 16);
uint32 ip = WG_EXTENSION_HOOKS::GetIpv4Target(packet, data);
WG_ACQUIRE_RWLOCK_SHARED(dev_.ip_to_peer_map_lock_);
peer = (WgPeer*)dev_.ip_to_peer_map().LookupV4(ip);
WG_RELEASE_RWLOCK_SHARED(dev_.ip_to_peer_map_lock_);

8
wireguard_proto.h
View file

@ -771,3 +771,11 @@ bool WgKeypairDecryptPayload(uint8 *dst, const size_t src_len,
const uint8 *ad, const size_t ad_len,
const uint64 nonce, WgKeypair *keypair);
struct WgExtensionHooksDefault {
static uint32 GetIpv4Target(Packet *packet, uint8 *data) { return ReadBE32(data + 16); }
};
#ifndef WG_EXTENSION_HOOKS
#define WG_EXTENSION_HOOKS WgExtensionHooksDefault
#endif // WG_EXTENSION_HOOKS