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
|
package net.minecraft.server;
import java.net.SocketAddress;
import java.util.Queue;
import javax.crypto.SecretKey;
import net.minecraft.util.com.google.common.collect.Queues;
import net.minecraft.util.com.google.common.util.concurrent.ThreadFactoryBuilder;
import net.minecraft.util.io.netty.channel.Channel;
import net.minecraft.util.io.netty.channel.ChannelFutureListener;
import net.minecraft.util.io.netty.channel.ChannelHandlerContext;
import net.minecraft.util.io.netty.channel.SimpleChannelInboundHandler;
import net.minecraft.util.io.netty.channel.local.LocalChannel;
import net.minecraft.util.io.netty.channel.local.LocalServerChannel;
import net.minecraft.util.io.netty.channel.nio.NioEventLoopGroup;
import net.minecraft.util.io.netty.util.AttributeKey;
import net.minecraft.util.io.netty.util.concurrent.GenericFutureListener;
import net.minecraft.util.org.apache.commons.lang3.Validate;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.Marker;
import org.apache.logging.log4j.MarkerManager;
public class NetworkManager extends SimpleChannelInboundHandler {
private static final Logger i = LogManager.getLogger();
public static final Marker a = MarkerManager.getMarker("NETWORK");
public static final Marker b = MarkerManager.getMarker("NETWORK_PACKETS", a);
public static final Marker c = MarkerManager.getMarker("NETWORK_STAT", a);
public static final AttributeKey d = new AttributeKey("protocol");
public static final AttributeKey e = new AttributeKey("receivable_packets");
public static final AttributeKey f = new AttributeKey("sendable_packets");
public static final NioEventLoopGroup g = new NioEventLoopGroup(0, (new ThreadFactoryBuilder()).setNameFormat("Netty Client IO #%d").setDaemon(true).build());
public static final NetworkStatistics h = new NetworkStatistics();
private final boolean j;
private final Queue k = Queues.newConcurrentLinkedQueue();
private final Queue l = Queues.newConcurrentLinkedQueue();
private Channel m;
private SocketAddress n;
private PacketListener o;
private EnumProtocol p;
private IChatBaseComponent q;
public NetworkManager(boolean flag) {
this.j = flag;
}
public void channelActive(ChannelHandlerContext channelhandlercontext) throws Exception { // CraftBukkit - throws Exception
super.channelActive(channelhandlercontext);
this.m = channelhandlercontext.channel();
this.n = this.m.remoteAddress();
this.a(EnumProtocol.HANDSHAKING);
}
public void a(EnumProtocol enumprotocol) {
this.p = (EnumProtocol) this.m.attr(d).getAndSet(enumprotocol);
this.m.attr(e).set(enumprotocol.a(this.j));
this.m.attr(f).set(enumprotocol.b(this.j));
this.m.config().setAutoRead(true);
i.debug("Enabled auto read");
}
public void channelInactive(ChannelHandlerContext channelhandlercontext) {
this.close(new ChatMessage("disconnect.endOfStream", new Object[0]));
}
public void exceptionCaught(ChannelHandlerContext channelhandlercontext, Throwable throwable) {
this.close(new ChatMessage("disconnect.genericReason", new Object[] { "Internal Exception: " + throwable}));
}
protected void a(ChannelHandlerContext channelhandlercontext, Packet packet) {
if (this.m.isOpen()) {
if (packet.a()) {
packet.handle(this.o);
} else {
this.k.add(packet);
}
}
}
public void a(PacketListener packetlistener) {
Validate.notNull(packetlistener, "packetListener", new Object[0]);
i.debug("Set listener of {} to {}", new Object[] { this, packetlistener});
this.o = packetlistener;
}
public void handle(Packet packet, GenericFutureListener... agenericfuturelistener) {
if (this.m != null && this.m.isOpen()) {
this.h();
this.b(packet, agenericfuturelistener);
} else {
this.l.add(new QueuedPacket(packet, agenericfuturelistener));
}
}
private void b(Packet packet, GenericFutureListener[] agenericfuturelistener) {
EnumProtocol enumprotocol = EnumProtocol.a(packet);
EnumProtocol enumprotocol1 = (EnumProtocol) this.m.attr(d).get();
if (enumprotocol1 != enumprotocol) {
i.debug("Disabled auto read");
this.m.config().setAutoRead(false);
}
if (this.m.eventLoop().inEventLoop()) {
if (enumprotocol != enumprotocol1) {
this.a(enumprotocol);
}
this.m.writeAndFlush(packet).addListeners(agenericfuturelistener).addListener(ChannelFutureListener.FIRE_EXCEPTION_ON_FAILURE);
} else {
this.m.eventLoop().execute(new QueuedProtocolSwitch(this, enumprotocol, enumprotocol1, packet, agenericfuturelistener));
}
}
private void h() {
if (this.m != null && this.m.isOpen()) {
while (!this.l.isEmpty()) {
QueuedPacket queuedpacket = (QueuedPacket) this.l.poll();
this.b(QueuedPacket.a(queuedpacket), QueuedPacket.b(queuedpacket));
}
}
}
public void a() {
this.h();
EnumProtocol enumprotocol = (EnumProtocol) this.m.attr(d).get();
if (this.p != enumprotocol) {
if (this.p != null) {
this.o.a(this.p, enumprotocol);
}
this.p = enumprotocol;
}
if (this.o != null) {
for (int i = 1000; !this.k.isEmpty() && i >= 0; --i) {
Packet packet = (Packet) this.k.poll();
// CraftBukkit start
if (!this.isConnected() || !this.m.config().isAutoRead()) {
continue;
}
// CraftBukkit end
packet.handle(this.o);
}
this.o.a();
}
this.m.flush();
}
public SocketAddress getSocketAddress() {
return this.n;
}
public void close(IChatBaseComponent ichatbasecomponent) {
if (this.m.isOpen()) {
this.m.close();
this.q = ichatbasecomponent;
}
}
public boolean c() {
return this.m instanceof LocalChannel || this.m instanceof LocalServerChannel;
}
public void a(SecretKey secretkey) {
this.m.pipeline().addBefore("splitter", "decrypt", new PacketDecrypter(MinecraftEncryption.a(2, secretkey)));
this.m.pipeline().addBefore("prepender", "encrypt", new PacketEncrypter(MinecraftEncryption.a(1, secretkey)));
}
public boolean isConnected() {
return this.m != null && this.m.isOpen();
}
public PacketListener getPacketListener() {
return this.o;
}
public IChatBaseComponent f() {
return this.q;
}
public void g() {
this.m.config().setAutoRead(false);
}
protected void channelRead0(ChannelHandlerContext channelhandlercontext, Object object) {
this.a(channelhandlercontext, (Packet) object);
}
static Channel a(NetworkManager networkmanager) {
return networkmanager.m;
}
}
|
