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Check CKR routes when receiving packets in router

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This commit is contained in:
Neil Alexander 2018-11-05 22:58:58 +00:00
parent 87b0f5fe24
commit c7f2427de1
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GPG Key ID: A02A2019A2BB0944
2 changed files with 9 additions and 6 deletions
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13
src/yggdrasil/router.go
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@ -253,7 +253,7 @@ func (r *router) sendPacket(bs []byte) {
// Called for incoming traffic by the session worker for that connection. // Called for incoming traffic by the session worker for that connection.
// Checks that the IP address is correct (matches the session) and passes the packet to the tun/tap. // Checks that the IP address is correct (matches the session) and passes the packet to the tun/tap.
func (r *router) recvPacket(bs []byte, theirAddr *address, theirSubnet *subnet) { func (r *router) recvPacket(bs []byte, sinfo *sessionInfo) {
// Note: called directly by the session worker, not the router goroutine // Note: called directly by the session worker, not the router goroutine
if len(bs) < 24 { if len(bs) < 24 {
util_putBytes(bs) util_putBytes(bs)
@ -264,11 +264,14 @@ func (r *router) recvPacket(bs []byte, theirAddr *address, theirSubnet *subnet)
var snet subnet var snet subnet
copy(snet[:], bs[8:]) copy(snet[:], bs[8:])
switch { switch {
case source.isValid() && source == *theirAddr: case source.isValid() && source == sinfo.theirAddr:
case snet.isValid() && snet == *theirSubnet: case snet.isValid() && snet == sinfo.theirSubnet:
default: default:
util_putBytes(bs) key, err := r.cryptokey.getPublicKeyForAddress(source)
return if err != nil || key != sinfo.theirPermPub {
util_putBytes(bs)
return
}
} }
//go func() { r.recv<-bs }() //go func() { r.recv<-bs }()
r.recv <- bs r.recv <- bs

2
src/yggdrasil/session.go
View File

@ -589,5 +589,5 @@ func (sinfo *sessionInfo) doRecv(p *wire_trafficPacket) {
sinfo.updateNonce(&p.Nonce) sinfo.updateNonce(&p.Nonce)
sinfo.time = time.Now() sinfo.time = time.Now()
sinfo.bytesRecvd += uint64(len(bs)) sinfo.bytesRecvd += uint64(len(bs))
sinfo.core.router.recvPacket(bs, &sinfo.theirAddr, &sinfo.theirSubnet) sinfo.core.router.recvPacket(bs, sinfo)
} }