CustomUICommand.java
package com.hypixel.hytale.protocol.packets.interface_;
import com.hypixel.hytale.protocol.io.PacketIO;
import com.hypixel.hytale.protocol.io.ProtocolException;
import com.hypixel.hytale.protocol.io.ValidationResult;
import com.hypixel.hytale.protocol.io.VarInt;
import io.netty.buffer.ByteBuf;
import java.util.Objects;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
public class CustomUICommand {
public static final int NULLABLE_BIT_FIELD_SIZE = 1;
public static final int FIXED_BLOCK_SIZE = 2;
public static final int VARIABLE_FIELD_COUNT = 3;
public static final int VARIABLE_BLOCK_START = 14;
public static final int MAX_SIZE = 49152029;
@Nonnull
public CustomUICommandType type;
@Nullable
public String selector;
@Nullable
public String data;
@Nullable
public String text;
public CustomUICommand() {
this.type = CustomUICommandType.Append;
}
public CustomUICommand(@Nonnull CustomUICommandType type, @Nullable String selector, @Nullable String data, @Nullable String text) {
this.type = CustomUICommandType.Append;
this.type = type;
this.selector = selector;
this.data = data;
this.text = text;
}
public CustomUICommand(@Nonnull CustomUICommand other) {
this.type = CustomUICommandType.Append;
this.type = other.type;
this.selector = other.selector;
this.data = other.data;
this.text = other.text;
}
@Nonnull
public static CustomUICommand deserialize(@Nonnull ByteBuf buf, int offset) {
CustomUICommand obj = new CustomUICommand();
byte nullBits = buf.getByte(offset);
obj.type = CustomUICommandType.fromValue(buf.getByte(offset + 1));
if ((nullBits & 1) != 0) {
int varPos0 = offset + 14 + buf.getIntLE(offset + 2);
int selectorLen = VarInt.peek(buf, varPos0);
if (selectorLen < 0) {
throw ProtocolException.negativeLength("Selector", selectorLen);
}
if (selectorLen > 4096000) {
throw ProtocolException.stringTooLong("Selector", selectorLen, 4096000);
}
obj.selector = PacketIO.readVarString(buf, varPos0, PacketIO.UTF8);
}
if ((nullBits & 2) != 0) {
int varPos1 = offset + 14 + buf.getIntLE(offset + 6);
int dataLen = VarInt.peek(buf, varPos1);
if (dataLen < 0) {
throw ProtocolException.negativeLength("Data", dataLen);
}
if (dataLen > 4096000) {
throw ProtocolException.stringTooLong("Data", dataLen, 4096000);
}
obj.data = PacketIO.readVarString(buf, varPos1, PacketIO.UTF8);
}
if ((nullBits & 4) != 0) {
int varPos2 = offset + 14 + buf.getIntLE(offset + 10);
int textLen = VarInt.peek(buf, varPos2);
if (textLen < 0) {
throw ProtocolException.negativeLength("Text", textLen);
}
if (textLen > 4096000) {
throw ProtocolException.stringTooLong("Text", textLen, 4096000);
}
obj.text = PacketIO.readVarString(buf, varPos2, PacketIO.UTF8);
}
return obj;
}
public static int computeBytesConsumed(@Nonnull ByteBuf buf, int offset) {
byte nullBits = buf.getByte(offset);
int maxEnd = 14;
if ((nullBits & 1) != 0) {
int fieldOffset0 = buf.getIntLE(offset + 2);
int pos0 = offset + 14 + fieldOffset0;
int sl = VarInt.peek(buf, pos0);
pos0 += VarInt.length(buf, pos0) + sl;
if (pos0 - offset > maxEnd) {
maxEnd = pos0 - offset;
}
}
if ((nullBits & 2) != 0) {
int fieldOffset1 = buf.getIntLE(offset + 6);
int pos1 = offset + 14 + fieldOffset1;
int sl = VarInt.peek(buf, pos1);
pos1 += VarInt.length(buf, pos1) + sl;
if (pos1 - offset > maxEnd) {
maxEnd = pos1 - offset;
}
}
if ((nullBits & 4) != 0) {
int fieldOffset2 = buf.getIntLE(offset + 10);
int pos2 = offset + 14 + fieldOffset2;
int sl = VarInt.peek(buf, pos2);
pos2 += VarInt.length(buf, pos2) + sl;
if (pos2 - offset > maxEnd) {
maxEnd = pos2 - offset;
}
}
return maxEnd;
}
public void serialize(@Nonnull ByteBuf buf) {
int startPos = buf.writerIndex();
byte nullBits = 0;
if (this.selector != null) {
nullBits = (byte)(nullBits | 1);
}
if (this.data != null) {
nullBits = (byte)(nullBits | 2);
}
if (this.text != null) {
nullBits = (byte)(nullBits | 4);
}
buf.writeByte(nullBits);
buf.writeByte(this.type.getValue());
int selectorOffsetSlot = buf.writerIndex();
buf.writeIntLE(0);
int dataOffsetSlot = buf.writerIndex();
buf.writeIntLE(0);
int textOffsetSlot = buf.writerIndex();
buf.writeIntLE(0);
int varBlockStart = buf.writerIndex();
if (this.selector != null) {
buf.setIntLE(selectorOffsetSlot, buf.writerIndex() - varBlockStart);
PacketIO.writeVarString(buf, this.selector, 4096000);
} else {
buf.setIntLE(selectorOffsetSlot, -1);
}
if (this.data != null) {
buf.setIntLE(dataOffsetSlot, buf.writerIndex() - varBlockStart);
PacketIO.writeVarString(buf, this.data, 4096000);
} else {
buf.setIntLE(dataOffsetSlot, -1);
}
if (this.text != null) {
buf.setIntLE(textOffsetSlot, buf.writerIndex() - varBlockStart);
PacketIO.writeVarString(buf, this.text, 4096000);
} else {
buf.setIntLE(textOffsetSlot, -1);
}
}
public int computeSize() {
int size = 14;
if (this.selector != null) {
size += PacketIO.stringSize(this.selector);
}
if (this.data != null) {
size += PacketIO.stringSize(this.data);
}
if (this.text != null) {
size += PacketIO.stringSize(this.text);
}
return size;
}
public static ValidationResult validateStructure(@Nonnull ByteBuf buffer, int offset) {
if (buffer.readableBytes() - offset < 14) {
return ValidationResult.error("Buffer too small: expected at least 14 bytes");
} else {
byte nullBits = buffer.getByte(offset);
if ((nullBits & 1) != 0) {
int selectorOffset = buffer.getIntLE(offset + 2);
if (selectorOffset < 0) {
return ValidationResult.error("Invalid offset for Selector");
}
int pos = offset + 14 + selectorOffset;
if (pos >= buffer.writerIndex()) {
return ValidationResult.error("Offset out of bounds for Selector");
}
int selectorLen = VarInt.peek(buffer, pos);
if (selectorLen < 0) {
return ValidationResult.error("Invalid string length for Selector");
}
if (selectorLen > 4096000) {
return ValidationResult.error("Selector exceeds max length 4096000");
}
pos += VarInt.length(buffer, pos);
pos += selectorLen;
if (pos > buffer.writerIndex()) {
return ValidationResult.error("Buffer overflow reading Selector");
}
}
if ((nullBits & 2) != 0) {
int dataOffset = buffer.getIntLE(offset + 6);
if (dataOffset < 0) {
return ValidationResult.error("Invalid offset for Data");
}
int pos = offset + 14 + dataOffset;
if (pos >= buffer.writerIndex()) {
return ValidationResult.error("Offset out of bounds for Data");
}
int dataLen = VarInt.peek(buffer, pos);
if (dataLen < 0) {
return ValidationResult.error("Invalid string length for Data");
}
if (dataLen > 4096000) {
return ValidationResult.error("Data exceeds max length 4096000");
}
pos += VarInt.length(buffer, pos);
pos += dataLen;
if (pos > buffer.writerIndex()) {
return ValidationResult.error("Buffer overflow reading Data");
}
}
if ((nullBits & 4) != 0) {
int textOffset = buffer.getIntLE(offset + 10);
if (textOffset < 0) {
return ValidationResult.error("Invalid offset for Text");
}
int pos = offset + 14 + textOffset;
if (pos >= buffer.writerIndex()) {
return ValidationResult.error("Offset out of bounds for Text");
}
int textLen = VarInt.peek(buffer, pos);
if (textLen < 0) {
return ValidationResult.error("Invalid string length for Text");
}
if (textLen > 4096000) {
return ValidationResult.error("Text exceeds max length 4096000");
}
pos += VarInt.length(buffer, pos);
pos += textLen;
if (pos > buffer.writerIndex()) {
return ValidationResult.error("Buffer overflow reading Text");
}
}
return ValidationResult.OK;
}
}
public CustomUICommand clone() {
CustomUICommand copy = new CustomUICommand();
copy.type = this.type;
copy.selector = this.selector;
copy.data = this.data;
copy.text = this.text;
return copy;
}
public boolean equals(Object obj) {
if (this == obj) {
return true;
} else if (!(obj instanceof CustomUICommand)) {
return false;
} else {
CustomUICommand other = (CustomUICommand)obj;
return Objects.equals(this.type, other.type) && Objects.equals(this.selector, other.selector) && Objects.equals(this.data, other.data) && Objects.equals(this.text, other.text);
}
}
public int hashCode() {
return Objects.hash(new Object[]{this.type, this.selector, this.data, this.text});
}
}