37 lines
1.1 KiB
Go
37 lines
1.1 KiB
Go
package nebula
|
|
|
|
const (
|
|
handshakeIXPSK0 = 0
|
|
handshakeXXPSK0 = 1
|
|
)
|
|
|
|
func HandleIncomingHandshake(f *Interface, addr *udpAddr, packet []byte, h *Header, hostinfo *HostInfo) {
|
|
newHostinfo, _ := f.handshakeManager.QueryIndex(h.RemoteIndex)
|
|
//TODO: For stage 1 we won't have hostinfo yet but stage 2 and above would require it, this check may be helpful in those cases
|
|
//if err != nil {
|
|
// l.WithError(err).WithField("udpAddr", addr).Error("Error while finding host info for handshake message")
|
|
// return
|
|
//}
|
|
|
|
if !f.lightHouse.remoteAllowList.Allow(udp2ipInt(addr)) {
|
|
l.WithField("udpAddr", addr).Debug("lighthouse.remote_allow_list denied incoming handshake")
|
|
return
|
|
}
|
|
|
|
tearDown := false
|
|
switch h.Subtype {
|
|
case handshakeIXPSK0:
|
|
switch h.MessageCounter {
|
|
case 1:
|
|
tearDown = ixHandshakeStage1(f, addr, newHostinfo, packet, h)
|
|
case 2:
|
|
tearDown = ixHandshakeStage2(f, addr, newHostinfo, packet, h)
|
|
}
|
|
}
|
|
|
|
if tearDown && newHostinfo != nil {
|
|
f.handshakeManager.DeleteIndex(newHostinfo.localIndexId)
|
|
f.handshakeManager.DeleteVpnIP(newHostinfo.hostId)
|
|
}
|
|
}
|