PandacubeFr/BungeeCord
1
0
Fork 0
Code Releases Activity

Initial commit. Man the Minecraft protocol is sucky.

Browse Source
This commit is contained in:
md_5 2012-10-17 18:32:35 +11:00
commit f0656355de
3 changed files with 348 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
.gitignore vendored Normal file
View File

@ -0,0 +1,34 @@
# Eclipse stuff
/.classpath
/.project
/.settings
# netbeans
/nbproject
/nbactions.xml
/nb-configuration.xml
# we use maven!
/build.xml
# maven
/target
/dependency-reduced-pom.xml
# vim
.*.sw[a-p]
# various other potential build files
/build
/bin
/dist
/manifest.mf
# Mac filesystem dust
/.DS_Store
# intellij
*.iml
*.ipr
*.iws
.idea/

25
pom.xml Normal file
View File

@ -0,0 +1,25 @@
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>net.md-5</groupId>
<artifactId>mc-protocol-lib</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>MinecraftProtocolLib</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>

289
src/main/java/net/md_5/mc/protocol/PacketDefinitions.java Normal file
View File

@ -0,0 +1,289 @@
package net.md_5.mc.protocol;
import java.io.DataInput;
import java.io.IOException;
public class PacketDefinitions {
private static final Instruction[][] opCodes = new Instruction[256][];
private static final Instruction BYTE = new JumpOpCode(1);
private static final Instruction BOOLEAN = BYTE;
private static final Instruction SHORT = new JumpOpCode(2);
private static final Instruction INT = new JumpOpCode(4);
private static final Instruction FLOAT = INT;
private static final Instruction LONG = new JumpOpCode(8);
private static final Instruction DOUBLE = LONG;
private static final Instruction SHORT_BYTE = new ShortHeader(BYTE);
private static final Instruction BYTE_BYTE = new ByteHeader(BYTE);
private static final Instruction BYTE_INT = new ByteHeader(INT);
private static final Instruction INT_BYTE = new IntHeader(BYTE);
private static final Instruction INT_INT = new IntHeader(INT);
private static final Instruction INT_3 = new IntHeader(new JumpOpCode(3));
private static final Instruction STRING = new Instruction() {
@Override
void read(DataInput in) throws IOException {
short len = in.readShort();
skip(in, len * 2);
}
};
private static final Instruction ITEM = new Instruction() {
@Override
void read(DataInput in) throws IOException {
short type = in.readShort();
if (type >= 0) {
skip(in, 3);
SHORT_BYTE.read(in);
}
}
};
private static final Instruction SHORT_ITEM = new ShortHeader(ITEM);
private static final Instruction METADATA = new Instruction() {
@Override
void read(DataInput in) throws IOException {
byte x = in.readByte();
while (x != 127) {
int type = x >> 5;
switch (type) {
case 0:
BYTE.read(in);
break;
case 1:
SHORT.read(in);
break;
case 2:
INT.read(in);
break;
case 3:
FLOAT.read(in);
break;
case 4:
STRING.read(in);
break;
case 5:
skip(in, 5); // short, byte, short
break;
case 6:
skip(in, 6); // int, int, int
break;
default:
throw new IllegalArgumentException("Unknown metadata type " + type);
}
x = in.readByte();
}
}
};
private static final Instruction BULK_CHUNK = new Instruction() {
@Override
void read(DataInput in) throws IOException {
short count = in.readShort();
INT_BYTE.read(in);
skip(in, count * 12);
}
};
static {
opCodes[0x00] = new Instruction[]{INT};
opCodes[0x01] = new Instruction[]{INT, STRING, BYTE, BYTE, BYTE, BYTE, BYTE};
opCodes[0x02] = new Instruction[]{BYTE, STRING, STRING, INT};
opCodes[0x03] = new Instruction[]{STRING};
opCodes[0x04] = new Instruction[]{LONG};
opCodes[0x05] = new Instruction[]{INT, SHORT, ITEM};
opCodes[0x06] = new Instruction[]{INT, INT, INT};
opCodes[0x07] = new Instruction[]{INT, INT, BOOLEAN};
opCodes[0x09] = new Instruction[]{INT, BYTE, BYTE, SHORT, STRING};
opCodes[0x0A] = new Instruction[]{BOOLEAN};
opCodes[0x0B] = new Instruction[]{DOUBLE, DOUBLE, DOUBLE, DOUBLE, BOOLEAN};
opCodes[0x0C] = new Instruction[]{FLOAT, FLOAT, BOOLEAN};
opCodes[0x0D] = new Instruction[]{DOUBLE, DOUBLE, DOUBLE, DOUBLE, FLOAT, FLOAT, BOOLEAN};
opCodes[0x0E] = new Instruction[]{BYTE, INT, BYTE, INT, BYTE};
opCodes[0x0F] = new Instruction[]{INT, BYTE, INT, ITEM, BYTE, BYTE, BYTE};
opCodes[0x10] = new Instruction[]{SHORT};
opCodes[0x11] = new Instruction[]{INT, BYTE, INT, BYTE, INT};
opCodes[0x12] = new Instruction[]{INT, BYTE};
opCodes[0x13] = new Instruction[]{INT, BYTE};
opCodes[0x14] = new Instruction[]{INT, STRING, INT, INT, INT, BYTE, BYTE, SHORT, METADATA};
opCodes[0x15] = new Instruction[]{INT, SHORT, BYTE, SHORT, INT, INT, INT, BYTE, BYTE, BYTE};
opCodes[0x16] = new Instruction[]{INT, INT};
opCodes[0x17] = new Instruction[]{INT, BYTE, INT, INT, INT, INT, SHORT, SHORT, SHORT};
opCodes[0x18] = new Instruction[]{INT, BYTE, INT, INT, INT, BYTE, BYTE, BYTE, SHORT, SHORT, SHORT, METADATA};
opCodes[0x19] = new Instruction[]{INT, STRING, INT, INT, INT, INT};
opCodes[0x1A] = new Instruction[]{INT, INT, INT, INT, SHORT};
opCodes[0x1B] = null; // Does not exist
opCodes[0x1C] = new Instruction[]{INT, SHORT, SHORT, SHORT};
opCodes[0x1D] = new Instruction[]{BYTE_INT};
opCodes[0x1E] = new Instruction[]{INT};
opCodes[0x1F] = new Instruction[]{INT, BYTE, BYTE, BYTE};
opCodes[0x20] = new Instruction[]{INT, BYTE, BYTE};
opCodes[0x21] = new Instruction[]{INT, BYTE, BYTE, BYTE, BYTE, BYTE};
opCodes[0x22] = new Instruction[]{INT, INT, INT, INT, BYTE, BYTE};
opCodes[0x23] = new Instruction[]{INT, BYTE};
opCodes[0x24] = null; // Does not exist
opCodes[0x25] = null; // Does not exist
opCodes[0x26] = new Instruction[]{INT, BYTE};
opCodes[0x27] = new Instruction[]{INT, INT};
opCodes[0x28] = new Instruction[]{INT, METADATA};
opCodes[0x29] = new Instruction[]{INT, BYTE, BYTE, SHORT};
opCodes[0x2A] = new Instruction[]{INT, BYTE};
opCodes[0x2B] = new Instruction[]{FLOAT, SHORT, SHORT};
//
//
// 0x2C -> 0x32 Do not exist
//
//
opCodes[0x33] = new Instruction[]{INT, INT, BOOLEAN, SHORT, SHORT, INT_BYTE};
opCodes[0x34] = new Instruction[]{INT, INT, SHORT, INT_INT};
opCodes[0x35] = new Instruction[]{INT, BYTE, INT, SHORT, BYTE};
opCodes[0x36] = new Instruction[]{INT, SHORT, INT, BYTE, BYTE, SHORT};
opCodes[0x37] = new Instruction[]{INT, INT, INT, INT, BYTE};
opCodes[0x38] = new Instruction[]{BULK_CHUNK};
opCodes[0x39] = null; // Does not exist
opCodes[0x3A] = null; // Does not exist
opCodes[0x3B] = null; // Does not exist
opCodes[0x3C] = new Instruction[]{DOUBLE, DOUBLE, DOUBLE, FLOAT, INT_3, FLOAT, FLOAT, FLOAT};
opCodes[0x3D] = new Instruction[]{INT, INT, BYTE, INT, INT};
opCodes[0x3E] = new Instruction[]{STRING, INT, INT, INT, FLOAT, BYTE};
//
//
// 0x3F -> 0x45 Do not exist
//
//
opCodes[0x46] = new Instruction[]{BYTE, BYTE};
opCodes[0x47] = new Instruction[]{INT, BOOLEAN, INT, INT, INT};
//
//
// 0x4A -> 0x63 Do not exist
//
//
opCodes[0x64] = new Instruction[]{BYTE, BYTE, STRING, BYTE};
opCodes[0x65] = new Instruction[]{BYTE};
opCodes[0x66] = new Instruction[]{BYTE, SHORT, BOOLEAN, SHORT, BOOLEAN, ITEM};
opCodes[0x67] = new Instruction[]{BYTE, SHORT, ITEM};
opCodes[0x68] = new Instruction[]{BYTE, SHORT_ITEM};
opCodes[0x69] = new Instruction[]{BYTE, SHORT, SHORT};
opCodes[0x6A] = new Instruction[]{BYTE, SHORT, BOOLEAN};
opCodes[0x6B] = new Instruction[]{SHORT, ITEM};
opCodes[0x6C] = new Instruction[]{BYTE, BYTE};
//
//
// 0x6D -> 0x81 Do not exist
//
//
opCodes[0x82] = new Instruction[]{INT, SHORT, INT, STRING, STRING, STRING, STRING};
opCodes[0x83] = new Instruction[]{SHORT, SHORT, BYTE_BYTE}; // TODO: Ubyte?
opCodes[0x84] = new Instruction[]{INT, SHORT, INT, BYTE, SHORT_BYTE};
//
//
// 0x85 -> 0xC7 Do not exist
//
//
opCodes[0xC8] = new Instruction[]{INT, BYTE};
opCodes[0xC9] = new Instruction[]{STRING, BOOLEAN, SHORT};
opCodes[0xCA] = new Instruction[]{BYTE, BYTE, BYTE};
opCodes[0xCB] = new Instruction[]{STRING};
opCodes[0xCC] = new Instruction[]{STRING, BYTE, BYTE, BYTE};
opCodes[0xCD] = new Instruction[]{BYTE};
//
//
// 0xCE -> 0xF9 Do not exist
//
//
opCodes[0xFA] = new Instruction[]{STRING, SHORT_BYTE};
opCodes[0xFB] = null; // Does not exist
opCodes[0xFC] = new Instruction[]{SHORT_BYTE, SHORT_BYTE};
opCodes[0xFD] = new Instruction[]{STRING, SHORT_BYTE, SHORT_BYTE};
opCodes[0xFE] = new Instruction[]{};
opCodes[0xFF] = new Instruction[]{STRING};
}
public static void readPacket(DataInput in) throws IOException {
int packetId = in.readUnsignedByte();
Instruction[] instructions = opCodes[packetId];
if (instructions == null) {
throw new IOException("Unknown packet id " + packetId);
}
for (Instruction instruction : instructions) {
instruction.read(in);
}
}
static abstract class Instruction {
abstract void read(DataInput in) throws IOException;
final void skip(DataInput in, int len) throws IOException {
int n = 0;
while (n < len) {
n += in.readByte();
}
}
}
static class JumpOpCode extends Instruction {
private final int len;
public JumpOpCode(int len) {
if (len < 0) {
throw new IndexOutOfBoundsException();
}
this.len = len;
}
@Override
void read(DataInput in) throws IOException {
skip(in, len);
}
}
static class ByteHeader extends Instruction {
private final Instruction child;
public ByteHeader(Instruction child) {
this.child = child;
}
@Override
void read(DataInput in) throws IOException {
byte size = in.readByte();
for (byte b = 0; b < size; b++) {
child.read(in);
}
}
}
static class ShortHeader extends Instruction {
private final Instruction child;
public ShortHeader(Instruction child) {
this.child = child;
}
@Override
void read(DataInput in) throws IOException {
short size = in.readShort();
for (short s = 0; s < size; s++) {
child.read(in);
}
}
}
static class IntHeader extends Instruction {
private final Instruction child;
public IntHeader(Instruction child) {
this.child = child;
}
@Override
void read(DataInput in) throws IOException {
int size = in.readInt();
for (int i = 0; i < size; i++) {
child.read(in);
}
}
}
}