summaryrefslogtreecommitdiffstats
path: root/src/main/java/net/minecraft/server/NetLoginHandler.java
blob: 977c89c3e1fec4a6146795a525dbed3d4963eba6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
package net.minecraft.server;

import java.io.Serializable;
import java.net.InetAddress;
import java.net.Socket;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import java.util.Random;
import java.util.logging.Logger;
import javax.crypto.SecretKey;

public class NetLoginHandler extends NetHandler {

    private byte[] d;
    public static Logger logger = Logger.getLogger("Minecraft");
    private static Random random = new Random();
    public NetworkManager networkManager;
    public boolean c = false;
    private MinecraftServer server;
    private int g = 0;
    private String h = null;
    private volatile boolean i = false;
    private String loginKey = Long.toString(random.nextLong(), 16); // CraftBukkit - Security fix
    private SecretKey k = null;
    public String hostname = ""; // CraftBukkit - add field
    private boolean login = false; // CraftBukkit

    public NetLoginHandler(MinecraftServer minecraftserver, Socket socket, String s) throws java.io.IOException { // CraftBukkit - throws IOException
        this.server = minecraftserver;
        this.networkManager = new NetworkManager(socket, s, this, minecraftserver.F().getPrivate());
        this.networkManager.e = 0;
    }

    // CraftBukkit start
    public Socket getSocket() {
        return this.networkManager.getSocket();
    }
    // CraftBukkit end

    public void c() {
        if (this.i) {
            this.d();
        }

        if (this.g++ == 600) {
            this.disconnect("Took too long to log in");
        } else {
            this.networkManager.b();
        }
    }

    public void disconnect(String s) {
        try {
            logger.info("Disconnecting " + this.getName() + ": " + s);
            this.networkManager.queue(new Packet255KickDisconnect(s));
            this.networkManager.d();
            this.c = true;
        } catch (Exception exception) {
            exception.printStackTrace();
        }
    }

    public void a(Packet2Handshake packet2handshake) {
        // CraftBukkit start
        this.hostname = packet2handshake.c == null ? "" : packet2handshake.c + ':' + packet2handshake.d;
        // CraftBukkit end
        this.h = packet2handshake.f();
        if (!this.h.equals(StripColor.a(this.h))) {
            this.disconnect("Invalid username!");
        } else {
            PublicKey publickey = this.server.F().getPublic();

            if (packet2handshake.d() != 49) {
                if (packet2handshake.d() > 49) {
                    this.disconnect("Outdated server!");
                } else {
                    this.disconnect("Outdated client!");
                }
            } else {
                this.loginKey = this.server.getOnlineMode() ? Long.toString(random.nextLong(), 16) : "-";
                this.d = new byte[4];
                random.nextBytes(this.d);
                this.networkManager.queue(new Packet253KeyRequest(this.loginKey, publickey, this.d));
            }
        }
    }

    public void a(Packet252KeyResponse packet252keyresponse) {
        PrivateKey privatekey = this.server.F().getPrivate();

        this.k = packet252keyresponse.a(privatekey);
        if (!Arrays.equals(this.d, packet252keyresponse.b(privatekey))) {
            this.disconnect("Invalid client reply");
        }

        this.networkManager.queue(new Packet252KeyResponse());
    }

    public void a(Packet205ClientCommand packet205clientcommand) {
        if (packet205clientcommand.a == 0) {
            if (this.server.getOnlineMode()) {
                // CraftBukkit start
                if (this.login) {
                    this.disconnect("Duplicate login");
                    return;
                }
                this.login = true;
                // CraftBukkit end
                (new ThreadLoginVerifier(this, server.server)).start(); // CraftBukkit - add CraftServer
            } else {
                this.i = true;
            }
        }
    }

    public void a(Packet1Login packet1login) {}

    public void d() {
        // CraftBukkit start
        EntityPlayer s = this.server.getServerConfigurationManager().attemptLogin(this, this.h, this.hostname);

        if (s == null) {
            return;
            // CraftBukkit end
        } else {
            EntityPlayer entityplayer = this.server.getServerConfigurationManager().processLogin(s); // CraftBukkit - this.h -> s

            if (entityplayer != null) {
                this.server.getServerConfigurationManager().a((INetworkManager) this.networkManager, entityplayer);
            }
        }

        this.c = true;
    }

    public void a(String s, Object[] aobject) {
        logger.info(this.getName() + " lost connection");
        this.c = true;
    }

    public void a(Packet254GetInfo packet254getinfo) {
        if (this.networkManager.getSocket() == null) return; // CraftBukkit - fix NPE when a client queries a server that is unable to handle it.
        try {
            ServerConfigurationManagerAbstract serverconfigurationmanagerabstract = this.server.getServerConfigurationManager();
            String s = null;
            // CraftBukkit
            org.bukkit.event.server.ServerListPingEvent pingEvent = org.bukkit.craftbukkit.event.CraftEventFactory.callServerListPingEvent(this.server.server, getSocket().getInetAddress(), this.server.getMotd(), serverconfigurationmanagerabstract.getPlayerCount(), serverconfigurationmanagerabstract.getMaxPlayers());

            if (packet254getinfo.a == 1) {
                // CraftBukkit start - fix decompile issues, don't create a list from an array
                Object[] list = new Object[] { 1, 49, this.server.getVersion(), pingEvent.getMotd(), serverconfigurationmanagerabstract.getPlayerCount(), pingEvent.getMaxPlayers() };

                for (Object object : list) {
                    if (s == null) {
                        s = "\u00A7";
                    } else {
                        s = s + "\0";
                    }

                    s += org.apache.commons.lang.StringUtils.replace(object.toString(), "\0", "");
                }
                // CraftBukkit end
            } else {
                // CraftBukkit
                s = pingEvent.getMotd() + "\u00A7" + serverconfigurationmanagerabstract.getPlayerCount() + "\u00A7" + pingEvent.getMaxPlayers();
            }

            InetAddress inetaddress = null;

            if (this.networkManager.getSocket() != null) {
                inetaddress = this.networkManager.getSocket().getInetAddress();
            }

            this.networkManager.queue(new Packet255KickDisconnect(s));
            this.networkManager.d();
            if (inetaddress != null && this.server.ae() instanceof DedicatedServerConnection) {
                ((DedicatedServerConnection) this.server.ae()).a(inetaddress);
            }

            this.c = true;
        } catch (Exception exception) {
            exception.printStackTrace();
        }
    }

    public void onUnhandledPacket(Packet packet) {
        this.disconnect("Protocol error");
    }

    public String getName() {
        return this.h != null ? this.h + " [" + this.networkManager.getSocketAddress().toString() + "]" : this.networkManager.getSocketAddress().toString();
    }

    public boolean a() {
        return true;
    }

    static String a(NetLoginHandler netloginhandler) {
        return netloginhandler.loginKey;
    }

    static MinecraftServer b(NetLoginHandler netloginhandler) {
        return netloginhandler.server;
    }

    static SecretKey c(NetLoginHandler netloginhandler) {
        return netloginhandler.k;
    }

    static String d(NetLoginHandler netloginhandler) {
        return netloginhandler.h;
    }

    static boolean a(NetLoginHandler netloginhandler, boolean flag) {
        return netloginhandler.i = flag;
    }
}