436 lines
15 KiB
Java
436 lines
15 KiB
Java
package com.hypixel.hytale.protocol.packets.worldmap;
|
|
|
|
import com.hypixel.hytale.protocol.Packet;
|
|
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.Arrays;
|
|
import javax.annotation.Nonnull;
|
|
import javax.annotation.Nullable;
|
|
|
|
public class UpdateWorldMap implements Packet {
|
|
public static final int PACKET_ID = 241;
|
|
public static final boolean IS_COMPRESSED = true;
|
|
public static final int NULLABLE_BIT_FIELD_SIZE = 1;
|
|
public static final int FIXED_BLOCK_SIZE = 1;
|
|
public static final int VARIABLE_FIELD_COUNT = 3;
|
|
public static final int VARIABLE_BLOCK_START = 13;
|
|
public static final int MAX_SIZE = 1677721600;
|
|
@Nullable
|
|
public MapChunk[] chunks;
|
|
@Nullable
|
|
public MapMarker[] addedMarkers;
|
|
@Nullable
|
|
public String[] removedMarkers;
|
|
|
|
@Override
|
|
public int getId() {
|
|
return 241;
|
|
}
|
|
|
|
public UpdateWorldMap() {
|
|
}
|
|
|
|
public UpdateWorldMap(@Nullable MapChunk[] chunks, @Nullable MapMarker[] addedMarkers, @Nullable String[] removedMarkers) {
|
|
this.chunks = chunks;
|
|
this.addedMarkers = addedMarkers;
|
|
this.removedMarkers = removedMarkers;
|
|
}
|
|
|
|
public UpdateWorldMap(@Nonnull UpdateWorldMap other) {
|
|
this.chunks = other.chunks;
|
|
this.addedMarkers = other.addedMarkers;
|
|
this.removedMarkers = other.removedMarkers;
|
|
}
|
|
|
|
@Nonnull
|
|
public static UpdateWorldMap deserialize(@Nonnull ByteBuf buf, int offset) {
|
|
UpdateWorldMap obj = new UpdateWorldMap();
|
|
byte nullBits = buf.getByte(offset);
|
|
if ((nullBits & 1) != 0) {
|
|
int varPos0 = offset + 13 + buf.getIntLE(offset + 1);
|
|
int chunksCount = VarInt.peek(buf, varPos0);
|
|
if (chunksCount < 0) {
|
|
throw ProtocolException.negativeLength("Chunks", chunksCount);
|
|
}
|
|
|
|
if (chunksCount > 4096000) {
|
|
throw ProtocolException.arrayTooLong("Chunks", chunksCount, 4096000);
|
|
}
|
|
|
|
int varIntLen = VarInt.length(buf, varPos0);
|
|
if (varPos0 + varIntLen + chunksCount * 9L > buf.readableBytes()) {
|
|
throw ProtocolException.bufferTooSmall("Chunks", varPos0 + varIntLen + chunksCount * 9, buf.readableBytes());
|
|
}
|
|
|
|
obj.chunks = new MapChunk[chunksCount];
|
|
int elemPos = varPos0 + varIntLen;
|
|
|
|
for (int i = 0; i < chunksCount; i++) {
|
|
obj.chunks[i] = MapChunk.deserialize(buf, elemPos);
|
|
elemPos += MapChunk.computeBytesConsumed(buf, elemPos);
|
|
}
|
|
}
|
|
|
|
if ((nullBits & 2) != 0) {
|
|
int varPos1 = offset + 13 + buf.getIntLE(offset + 5);
|
|
int addedMarkersCount = VarInt.peek(buf, varPos1);
|
|
if (addedMarkersCount < 0) {
|
|
throw ProtocolException.negativeLength("AddedMarkers", addedMarkersCount);
|
|
}
|
|
|
|
if (addedMarkersCount > 4096000) {
|
|
throw ProtocolException.arrayTooLong("AddedMarkers", addedMarkersCount, 4096000);
|
|
}
|
|
|
|
int varIntLen = VarInt.length(buf, varPos1);
|
|
if (varPos1 + varIntLen + addedMarkersCount * 38L > buf.readableBytes()) {
|
|
throw ProtocolException.bufferTooSmall("AddedMarkers", varPos1 + varIntLen + addedMarkersCount * 38, buf.readableBytes());
|
|
}
|
|
|
|
obj.addedMarkers = new MapMarker[addedMarkersCount];
|
|
int elemPos = varPos1 + varIntLen;
|
|
|
|
for (int i = 0; i < addedMarkersCount; i++) {
|
|
obj.addedMarkers[i] = MapMarker.deserialize(buf, elemPos);
|
|
elemPos += MapMarker.computeBytesConsumed(buf, elemPos);
|
|
}
|
|
}
|
|
|
|
if ((nullBits & 4) != 0) {
|
|
int varPos2 = offset + 13 + buf.getIntLE(offset + 9);
|
|
int removedMarkersCount = VarInt.peek(buf, varPos2);
|
|
if (removedMarkersCount < 0) {
|
|
throw ProtocolException.negativeLength("RemovedMarkers", removedMarkersCount);
|
|
}
|
|
|
|
if (removedMarkersCount > 4096000) {
|
|
throw ProtocolException.arrayTooLong("RemovedMarkers", removedMarkersCount, 4096000);
|
|
}
|
|
|
|
int varIntLen = VarInt.length(buf, varPos2);
|
|
if (varPos2 + varIntLen + removedMarkersCount * 1L > buf.readableBytes()) {
|
|
throw ProtocolException.bufferTooSmall("RemovedMarkers", varPos2 + varIntLen + removedMarkersCount * 1, buf.readableBytes());
|
|
}
|
|
|
|
obj.removedMarkers = new String[removedMarkersCount];
|
|
int elemPos = varPos2 + varIntLen;
|
|
|
|
for (int i = 0; i < removedMarkersCount; i++) {
|
|
int strLen = VarInt.peek(buf, elemPos);
|
|
if (strLen < 0) {
|
|
throw ProtocolException.negativeLength("removedMarkers[" + i + "]", strLen);
|
|
}
|
|
|
|
if (strLen > 4096000) {
|
|
throw ProtocolException.stringTooLong("removedMarkers[" + i + "]", strLen, 4096000);
|
|
}
|
|
|
|
int strVarLen = VarInt.length(buf, elemPos);
|
|
obj.removedMarkers[i] = PacketIO.readVarString(buf, elemPos);
|
|
elemPos += strVarLen + strLen;
|
|
}
|
|
}
|
|
|
|
return obj;
|
|
}
|
|
|
|
public static int computeBytesConsumed(@Nonnull ByteBuf buf, int offset) {
|
|
byte nullBits = buf.getByte(offset);
|
|
int maxEnd = 13;
|
|
if ((nullBits & 1) != 0) {
|
|
int fieldOffset0 = buf.getIntLE(offset + 1);
|
|
int pos0 = offset + 13 + fieldOffset0;
|
|
int arrLen = VarInt.peek(buf, pos0);
|
|
pos0 += VarInt.length(buf, pos0);
|
|
|
|
for (int i = 0; i < arrLen; i++) {
|
|
pos0 += MapChunk.computeBytesConsumed(buf, pos0);
|
|
}
|
|
|
|
if (pos0 - offset > maxEnd) {
|
|
maxEnd = pos0 - offset;
|
|
}
|
|
}
|
|
|
|
if ((nullBits & 2) != 0) {
|
|
int fieldOffset1 = buf.getIntLE(offset + 5);
|
|
int pos1 = offset + 13 + fieldOffset1;
|
|
int arrLen = VarInt.peek(buf, pos1);
|
|
pos1 += VarInt.length(buf, pos1);
|
|
|
|
for (int i = 0; i < arrLen; i++) {
|
|
pos1 += MapMarker.computeBytesConsumed(buf, pos1);
|
|
}
|
|
|
|
if (pos1 - offset > maxEnd) {
|
|
maxEnd = pos1 - offset;
|
|
}
|
|
}
|
|
|
|
if ((nullBits & 4) != 0) {
|
|
int fieldOffset2 = buf.getIntLE(offset + 9);
|
|
int pos2 = offset + 13 + fieldOffset2;
|
|
int arrLen = VarInt.peek(buf, pos2);
|
|
pos2 += VarInt.length(buf, pos2);
|
|
|
|
for (int i = 0; i < arrLen; i++) {
|
|
int sl = VarInt.peek(buf, pos2);
|
|
pos2 += VarInt.length(buf, pos2) + sl;
|
|
}
|
|
|
|
if (pos2 - offset > maxEnd) {
|
|
maxEnd = pos2 - offset;
|
|
}
|
|
}
|
|
|
|
return maxEnd;
|
|
}
|
|
|
|
@Override
|
|
public void serialize(@Nonnull ByteBuf buf) {
|
|
int startPos = buf.writerIndex();
|
|
byte nullBits = 0;
|
|
if (this.chunks != null) {
|
|
nullBits = (byte)(nullBits | 1);
|
|
}
|
|
|
|
if (this.addedMarkers != null) {
|
|
nullBits = (byte)(nullBits | 2);
|
|
}
|
|
|
|
if (this.removedMarkers != null) {
|
|
nullBits = (byte)(nullBits | 4);
|
|
}
|
|
|
|
buf.writeByte(nullBits);
|
|
int chunksOffsetSlot = buf.writerIndex();
|
|
buf.writeIntLE(0);
|
|
int addedMarkersOffsetSlot = buf.writerIndex();
|
|
buf.writeIntLE(0);
|
|
int removedMarkersOffsetSlot = buf.writerIndex();
|
|
buf.writeIntLE(0);
|
|
int varBlockStart = buf.writerIndex();
|
|
if (this.chunks != null) {
|
|
buf.setIntLE(chunksOffsetSlot, buf.writerIndex() - varBlockStart);
|
|
if (this.chunks.length > 4096000) {
|
|
throw ProtocolException.arrayTooLong("Chunks", this.chunks.length, 4096000);
|
|
}
|
|
|
|
VarInt.write(buf, this.chunks.length);
|
|
|
|
for (MapChunk item : this.chunks) {
|
|
item.serialize(buf);
|
|
}
|
|
} else {
|
|
buf.setIntLE(chunksOffsetSlot, -1);
|
|
}
|
|
|
|
if (this.addedMarkers != null) {
|
|
buf.setIntLE(addedMarkersOffsetSlot, buf.writerIndex() - varBlockStart);
|
|
if (this.addedMarkers.length > 4096000) {
|
|
throw ProtocolException.arrayTooLong("AddedMarkers", this.addedMarkers.length, 4096000);
|
|
}
|
|
|
|
VarInt.write(buf, this.addedMarkers.length);
|
|
|
|
for (MapMarker item : this.addedMarkers) {
|
|
item.serialize(buf);
|
|
}
|
|
} else {
|
|
buf.setIntLE(addedMarkersOffsetSlot, -1);
|
|
}
|
|
|
|
if (this.removedMarkers != null) {
|
|
buf.setIntLE(removedMarkersOffsetSlot, buf.writerIndex() - varBlockStart);
|
|
if (this.removedMarkers.length > 4096000) {
|
|
throw ProtocolException.arrayTooLong("RemovedMarkers", this.removedMarkers.length, 4096000);
|
|
}
|
|
|
|
VarInt.write(buf, this.removedMarkers.length);
|
|
|
|
for (String item : this.removedMarkers) {
|
|
PacketIO.writeVarString(buf, item, 4096000);
|
|
}
|
|
} else {
|
|
buf.setIntLE(removedMarkersOffsetSlot, -1);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public int computeSize() {
|
|
int size = 13;
|
|
if (this.chunks != null) {
|
|
int chunksSize = 0;
|
|
|
|
for (MapChunk elem : this.chunks) {
|
|
chunksSize += elem.computeSize();
|
|
}
|
|
|
|
size += VarInt.size(this.chunks.length) + chunksSize;
|
|
}
|
|
|
|
if (this.addedMarkers != null) {
|
|
int addedMarkersSize = 0;
|
|
|
|
for (MapMarker elem : this.addedMarkers) {
|
|
addedMarkersSize += elem.computeSize();
|
|
}
|
|
|
|
size += VarInt.size(this.addedMarkers.length) + addedMarkersSize;
|
|
}
|
|
|
|
if (this.removedMarkers != null) {
|
|
int removedMarkersSize = 0;
|
|
|
|
for (String elem : this.removedMarkers) {
|
|
removedMarkersSize += PacketIO.stringSize(elem);
|
|
}
|
|
|
|
size += VarInt.size(this.removedMarkers.length) + removedMarkersSize;
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
public static ValidationResult validateStructure(@Nonnull ByteBuf buffer, int offset) {
|
|
if (buffer.readableBytes() - offset < 13) {
|
|
return ValidationResult.error("Buffer too small: expected at least 13 bytes");
|
|
} else {
|
|
byte nullBits = buffer.getByte(offset);
|
|
if ((nullBits & 1) != 0) {
|
|
int chunksOffset = buffer.getIntLE(offset + 1);
|
|
if (chunksOffset < 0) {
|
|
return ValidationResult.error("Invalid offset for Chunks");
|
|
}
|
|
|
|
int pos = offset + 13 + chunksOffset;
|
|
if (pos >= buffer.writerIndex()) {
|
|
return ValidationResult.error("Offset out of bounds for Chunks");
|
|
}
|
|
|
|
int chunksCount = VarInt.peek(buffer, pos);
|
|
if (chunksCount < 0) {
|
|
return ValidationResult.error("Invalid array count for Chunks");
|
|
}
|
|
|
|
if (chunksCount > 4096000) {
|
|
return ValidationResult.error("Chunks exceeds max length 4096000");
|
|
}
|
|
|
|
pos += VarInt.length(buffer, pos);
|
|
|
|
for (int i = 0; i < chunksCount; i++) {
|
|
ValidationResult structResult = MapChunk.validateStructure(buffer, pos);
|
|
if (!structResult.isValid()) {
|
|
return ValidationResult.error("Invalid MapChunk in Chunks[" + i + "]: " + structResult.error());
|
|
}
|
|
|
|
pos += MapChunk.computeBytesConsumed(buffer, pos);
|
|
}
|
|
}
|
|
|
|
if ((nullBits & 2) != 0) {
|
|
int addedMarkersOffset = buffer.getIntLE(offset + 5);
|
|
if (addedMarkersOffset < 0) {
|
|
return ValidationResult.error("Invalid offset for AddedMarkers");
|
|
}
|
|
|
|
int posx = offset + 13 + addedMarkersOffset;
|
|
if (posx >= buffer.writerIndex()) {
|
|
return ValidationResult.error("Offset out of bounds for AddedMarkers");
|
|
}
|
|
|
|
int addedMarkersCount = VarInt.peek(buffer, posx);
|
|
if (addedMarkersCount < 0) {
|
|
return ValidationResult.error("Invalid array count for AddedMarkers");
|
|
}
|
|
|
|
if (addedMarkersCount > 4096000) {
|
|
return ValidationResult.error("AddedMarkers exceeds max length 4096000");
|
|
}
|
|
|
|
posx += VarInt.length(buffer, posx);
|
|
|
|
for (int i = 0; i < addedMarkersCount; i++) {
|
|
ValidationResult structResult = MapMarker.validateStructure(buffer, posx);
|
|
if (!structResult.isValid()) {
|
|
return ValidationResult.error("Invalid MapMarker in AddedMarkers[" + i + "]: " + structResult.error());
|
|
}
|
|
|
|
posx += MapMarker.computeBytesConsumed(buffer, posx);
|
|
}
|
|
}
|
|
|
|
if ((nullBits & 4) != 0) {
|
|
int removedMarkersOffset = buffer.getIntLE(offset + 9);
|
|
if (removedMarkersOffset < 0) {
|
|
return ValidationResult.error("Invalid offset for RemovedMarkers");
|
|
}
|
|
|
|
int posxx = offset + 13 + removedMarkersOffset;
|
|
if (posxx >= buffer.writerIndex()) {
|
|
return ValidationResult.error("Offset out of bounds for RemovedMarkers");
|
|
}
|
|
|
|
int removedMarkersCount = VarInt.peek(buffer, posxx);
|
|
if (removedMarkersCount < 0) {
|
|
return ValidationResult.error("Invalid array count for RemovedMarkers");
|
|
}
|
|
|
|
if (removedMarkersCount > 4096000) {
|
|
return ValidationResult.error("RemovedMarkers exceeds max length 4096000");
|
|
}
|
|
|
|
posxx += VarInt.length(buffer, posxx);
|
|
|
|
for (int i = 0; i < removedMarkersCount; i++) {
|
|
int strLen = VarInt.peek(buffer, posxx);
|
|
if (strLen < 0) {
|
|
return ValidationResult.error("Invalid string length in RemovedMarkers");
|
|
}
|
|
|
|
posxx += VarInt.length(buffer, posxx);
|
|
posxx += strLen;
|
|
if (posxx > buffer.writerIndex()) {
|
|
return ValidationResult.error("Buffer overflow reading string in RemovedMarkers");
|
|
}
|
|
}
|
|
}
|
|
|
|
return ValidationResult.OK;
|
|
}
|
|
}
|
|
|
|
public UpdateWorldMap clone() {
|
|
UpdateWorldMap copy = new UpdateWorldMap();
|
|
copy.chunks = this.chunks != null ? Arrays.stream(this.chunks).map(e -> e.clone()).toArray(MapChunk[]::new) : null;
|
|
copy.addedMarkers = this.addedMarkers != null ? Arrays.stream(this.addedMarkers).map(e -> e.clone()).toArray(MapMarker[]::new) : null;
|
|
copy.removedMarkers = this.removedMarkers != null ? Arrays.copyOf(this.removedMarkers, this.removedMarkers.length) : null;
|
|
return copy;
|
|
}
|
|
|
|
@Override
|
|
public boolean equals(Object obj) {
|
|
if (this == obj) {
|
|
return true;
|
|
} else {
|
|
return !(obj instanceof UpdateWorldMap other)
|
|
? false
|
|
: Arrays.equals((Object[])this.chunks, (Object[])other.chunks)
|
|
&& Arrays.equals((Object[])this.addedMarkers, (Object[])other.addedMarkers)
|
|
&& Arrays.equals((Object[])this.removedMarkers, (Object[])other.removedMarkers);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public int hashCode() {
|
|
int result = 1;
|
|
result = 31 * result + Arrays.hashCode((Object[])this.chunks);
|
|
result = 31 * result + Arrays.hashCode((Object[])this.addedMarkers);
|
|
return 31 * result + Arrays.hashCode((Object[])this.removedMarkers);
|
|
}
|
|
}
|