J. David Lee
1d3cc1f959
Co-authored-by: jdl <jdl@desktop> Co-authored-by: jdl <jdl@crumpington.com> Reviewed-on: #3
115 lines
2.3 KiB
Go
115 lines
2.3 KiB
Go
package peer
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import (
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"bytes"
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"crypto/rand"
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mrand "math/rand"
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"net/netip"
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"sync/atomic"
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)
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// A test peer.
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type P struct {
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cryptoKeys
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RT *atomic.Pointer[routingTable]
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Conn *TestUDPConn
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IFace *TestIFace
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ConnReader *connReader
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IFReader *ifReader
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}
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func NewPeerForTesting(n *TestNetwork, ip byte, addr netip.AddrPort) P {
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p := P{
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cryptoKeys: generateKeys(),
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RT: &atomic.Pointer[routingTable]{},
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IFace: NewTestIFace(),
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}
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rt := newRoutingTable(ip, addr)
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p.RT.Store(&rt)
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p.Conn = n.NewUDPConn(addr)
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//p.ConnWriter = NewConnWriter(p.Conn.WriteToUDPAddrPort, p.RT)
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return p
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}
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func ConnectPeers(p1, p2 *P) {
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rt1 := p1.RT.Load()
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rt2 := p2.RT.Load()
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ip1 := rt1.LocalIP
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ip2 := rt2.LocalIP
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rt1.Peers[ip2].Up = true
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rt1.Peers[ip2].Direct = true
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rt1.Peers[ip2].Relay = true
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rt1.Peers[ip2].DirectAddr = rt2.LocalAddr
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rt1.Peers[ip2].PubSignKey = p2.PubSignKey
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rt1.Peers[ip2].ControlCipher = newControlCipher(p1.PrivKey, p2.PubKey)
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rt1.Peers[ip2].DataCipher = newDataCipher()
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rt2.Peers[ip1].Up = true
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rt2.Peers[ip1].Direct = true
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rt2.Peers[ip1].Relay = true
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rt2.Peers[ip1].DirectAddr = rt1.LocalAddr
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rt2.Peers[ip1].PubSignKey = p1.PubSignKey
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rt2.Peers[ip1].ControlCipher = newControlCipher(p2.PrivKey, p1.PubKey)
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rt2.Peers[ip1].DataCipher = rt1.Peers[ip2].DataCipher
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}
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func NewPeersForTesting() (p1, p2, p3 P) {
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n := NewTestNetwork()
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p1 = NewPeerForTesting(
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n,
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1,
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netip.AddrPortFrom(netip.AddrFrom4([4]byte{1, 1, 1, 1}), 100))
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p2 = NewPeerForTesting(
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n,
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2,
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netip.AddrPortFrom(netip.AddrFrom4([4]byte{1, 1, 1, 2}), 200))
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p3 = NewPeerForTesting(
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n,
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3,
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netip.AddrPortFrom(netip.AddrFrom4([4]byte{1, 1, 1, 3}), 300))
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ConnectPeers(&p1, &p2)
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ConnectPeers(&p1, &p3)
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ConnectPeers(&p2, &p3)
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return
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}
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func RandPacket() []byte {
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n := mrand.Intn(1200)
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b := make([]byte, n)
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rand.Read(b)
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return b
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}
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func ModifyPacket(in []byte) []byte {
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x := make([]byte, 1)
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for {
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rand.Read(x)
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out := bytes.Clone(in)
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idx := mrand.Intn(len(out))
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if out[idx] != x[0] {
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out[idx] = x[0]
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return out
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}
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}
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}
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// ----------------------------------------------------------------------------
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type UnknownControlPacket struct {
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TraceID uint64
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}
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func (p UnknownControlPacket) Marshal(buf []byte) []byte {
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return newBinWriter(buf).Byte(255).Uint64(p.TraceID).Build()
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}
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