81 lines
1.5 KiB
Go
81 lines
1.5 KiB
Go
package server
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import (
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"fmt"
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"github.com/Tnze/go-mc/data/packetid"
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"github.com/Tnze/go-mc/net"
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pk "github.com/Tnze/go-mc/net/packet"
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"github.com/Tnze/go-mc/offline"
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"github.com/Tnze/go-mc/server/auth"
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"github.com/google/uuid"
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)
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type LoginHandler interface {
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AcceptLogin(conn *net.Conn, protocol int32) (name string, id uuid.UUID, err error)
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}
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type MojangLoginHandler struct {
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OnlineMode bool
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Threshold int
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}
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func (d *MojangLoginHandler) AcceptLogin(conn *net.Conn, protocol int32) (name string, id uuid.UUID, err error) {
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//login start
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var p pk.Packet
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err = conn.ReadPacket(&p)
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if err != nil {
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return
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}
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if p.ID != packetid.LoginStart {
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err = wrongPacketErr{expect: packetid.LoginStart, get: p.ID}
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return
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}
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err = p.Scan((*pk.String)(&name)) //decode username as pk.String
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if err != nil {
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return
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}
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//auth
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if d.OnlineMode {
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var resp *auth.Resp
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//Auth, Encrypt
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resp, err = auth.Encrypt(conn, name)
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if err != nil {
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return
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}
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name = resp.Name
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id = resp.ID
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} else {
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// offline-mode UUID
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id = offline.NameToUUID(name)
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}
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//set compression
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if d.Threshold >= 0 {
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err = conn.WritePacket(pk.Marshal(
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packetid.Compress, pk.VarInt(d.Threshold),
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))
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if err != nil {
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return
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}
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conn.SetThreshold(d.Threshold)
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}
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// send login success
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err = conn.WritePacket(pk.Marshal(packetid.Success,
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pk.UUID(id),
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pk.String(name),
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))
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return
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}
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type wrongPacketErr struct {
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expect, get int32
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}
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func (w wrongPacketErr) Error() string {
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return fmt.Sprintf("wrong packet id: expect %#02X, get %#02X", w.expect, w.get)
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}
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