350 lines
12 KiB
Java
350 lines
12 KiB
Java
package com.hypixel.hytale.protocol.packets.asseteditor;
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import com.hypixel.hytale.protocol.Packet;
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import com.hypixel.hytale.protocol.io.PacketIO;
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import com.hypixel.hytale.protocol.io.ProtocolException;
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import com.hypixel.hytale.protocol.io.ValidationResult;
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import com.hypixel.hytale.protocol.io.VarInt;
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import io.netty.buffer.ByteBuf;
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import java.util.Arrays;
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import java.util.Objects;
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import javax.annotation.Nonnull;
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import javax.annotation.Nullable;
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public class AssetEditorUpdateJsonAsset implements Packet {
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public static final int PACKET_ID = 323;
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public static final boolean IS_COMPRESSED = true;
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public static final int NULLABLE_BIT_FIELD_SIZE = 1;
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public static final int FIXED_BLOCK_SIZE = 9;
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public static final int VARIABLE_FIELD_COUNT = 3;
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public static final int VARIABLE_BLOCK_START = 21;
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public static final int MAX_SIZE = 1677721600;
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public int token;
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@Nullable
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public String assetType;
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@Nullable
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public AssetPath path;
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public int assetIndex = Integer.MIN_VALUE;
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@Nullable
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public JsonUpdateCommand[] commands;
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@Override
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public int getId() {
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return 323;
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}
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public AssetEditorUpdateJsonAsset() {
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}
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public AssetEditorUpdateJsonAsset(int token, @Nullable String assetType, @Nullable AssetPath path, int assetIndex, @Nullable JsonUpdateCommand[] commands) {
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this.token = token;
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this.assetType = assetType;
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this.path = path;
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this.assetIndex = assetIndex;
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this.commands = commands;
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}
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public AssetEditorUpdateJsonAsset(@Nonnull AssetEditorUpdateJsonAsset other) {
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this.token = other.token;
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this.assetType = other.assetType;
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this.path = other.path;
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this.assetIndex = other.assetIndex;
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this.commands = other.commands;
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}
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@Nonnull
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public static AssetEditorUpdateJsonAsset deserialize(@Nonnull ByteBuf buf, int offset) {
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AssetEditorUpdateJsonAsset obj = new AssetEditorUpdateJsonAsset();
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byte nullBits = buf.getByte(offset);
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obj.token = buf.getIntLE(offset + 1);
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obj.assetIndex = buf.getIntLE(offset + 5);
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if ((nullBits & 1) != 0) {
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int varPos0 = offset + 21 + buf.getIntLE(offset + 9);
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int assetTypeLen = VarInt.peek(buf, varPos0);
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if (assetTypeLen < 0) {
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throw ProtocolException.negativeLength("AssetType", assetTypeLen);
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}
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if (assetTypeLen > 4096000) {
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throw ProtocolException.stringTooLong("AssetType", assetTypeLen, 4096000);
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}
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obj.assetType = PacketIO.readVarString(buf, varPos0, PacketIO.UTF8);
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}
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if ((nullBits & 2) != 0) {
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int varPos1 = offset + 21 + buf.getIntLE(offset + 13);
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obj.path = AssetPath.deserialize(buf, varPos1);
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}
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if ((nullBits & 4) != 0) {
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int varPos2 = offset + 21 + buf.getIntLE(offset + 17);
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int commandsCount = VarInt.peek(buf, varPos2);
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if (commandsCount < 0) {
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throw ProtocolException.negativeLength("Commands", commandsCount);
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}
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if (commandsCount > 4096000) {
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throw ProtocolException.arrayTooLong("Commands", commandsCount, 4096000);
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}
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int varIntLen = VarInt.length(buf, varPos2);
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if (varPos2 + varIntLen + commandsCount * 7L > buf.readableBytes()) {
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throw ProtocolException.bufferTooSmall("Commands", varPos2 + varIntLen + commandsCount * 7, buf.readableBytes());
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}
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obj.commands = new JsonUpdateCommand[commandsCount];
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int elemPos = varPos2 + varIntLen;
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for (int i = 0; i < commandsCount; i++) {
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obj.commands[i] = JsonUpdateCommand.deserialize(buf, elemPos);
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elemPos += JsonUpdateCommand.computeBytesConsumed(buf, elemPos);
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}
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}
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return obj;
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}
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public static int computeBytesConsumed(@Nonnull ByteBuf buf, int offset) {
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byte nullBits = buf.getByte(offset);
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int maxEnd = 21;
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if ((nullBits & 1) != 0) {
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int fieldOffset0 = buf.getIntLE(offset + 9);
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int pos0 = offset + 21 + fieldOffset0;
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int sl = VarInt.peek(buf, pos0);
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pos0 += VarInt.length(buf, pos0) + sl;
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if (pos0 - offset > maxEnd) {
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maxEnd = pos0 - offset;
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}
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}
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if ((nullBits & 2) != 0) {
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int fieldOffset1 = buf.getIntLE(offset + 13);
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int pos1 = offset + 21 + fieldOffset1;
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pos1 += AssetPath.computeBytesConsumed(buf, pos1);
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if (pos1 - offset > maxEnd) {
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maxEnd = pos1 - offset;
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}
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}
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if ((nullBits & 4) != 0) {
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int fieldOffset2 = buf.getIntLE(offset + 17);
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int pos2 = offset + 21 + fieldOffset2;
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int arrLen = VarInt.peek(buf, pos2);
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pos2 += VarInt.length(buf, pos2);
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for (int i = 0; i < arrLen; i++) {
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pos2 += JsonUpdateCommand.computeBytesConsumed(buf, pos2);
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}
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if (pos2 - offset > maxEnd) {
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maxEnd = pos2 - offset;
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}
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}
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return maxEnd;
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}
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@Override
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public void serialize(@Nonnull ByteBuf buf) {
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int startPos = buf.writerIndex();
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byte nullBits = 0;
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if (this.assetType != null) {
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nullBits = (byte)(nullBits | 1);
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}
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if (this.path != null) {
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nullBits = (byte)(nullBits | 2);
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}
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if (this.commands != null) {
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nullBits = (byte)(nullBits | 4);
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}
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buf.writeByte(nullBits);
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buf.writeIntLE(this.token);
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buf.writeIntLE(this.assetIndex);
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int assetTypeOffsetSlot = buf.writerIndex();
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buf.writeIntLE(0);
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int pathOffsetSlot = buf.writerIndex();
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buf.writeIntLE(0);
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int commandsOffsetSlot = buf.writerIndex();
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buf.writeIntLE(0);
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int varBlockStart = buf.writerIndex();
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if (this.assetType != null) {
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buf.setIntLE(assetTypeOffsetSlot, buf.writerIndex() - varBlockStart);
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PacketIO.writeVarString(buf, this.assetType, 4096000);
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} else {
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buf.setIntLE(assetTypeOffsetSlot, -1);
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}
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if (this.path != null) {
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buf.setIntLE(pathOffsetSlot, buf.writerIndex() - varBlockStart);
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this.path.serialize(buf);
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} else {
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buf.setIntLE(pathOffsetSlot, -1);
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}
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if (this.commands != null) {
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buf.setIntLE(commandsOffsetSlot, buf.writerIndex() - varBlockStart);
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if (this.commands.length > 4096000) {
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throw ProtocolException.arrayTooLong("Commands", this.commands.length, 4096000);
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}
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VarInt.write(buf, this.commands.length);
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for (JsonUpdateCommand item : this.commands) {
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item.serialize(buf);
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}
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} else {
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buf.setIntLE(commandsOffsetSlot, -1);
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}
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}
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@Override
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public int computeSize() {
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int size = 21;
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if (this.assetType != null) {
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size += PacketIO.stringSize(this.assetType);
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}
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if (this.path != null) {
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size += this.path.computeSize();
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}
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if (this.commands != null) {
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int commandsSize = 0;
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for (JsonUpdateCommand elem : this.commands) {
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commandsSize += elem.computeSize();
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}
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size += VarInt.size(this.commands.length) + commandsSize;
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}
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return size;
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}
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public static ValidationResult validateStructure(@Nonnull ByteBuf buffer, int offset) {
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if (buffer.readableBytes() - offset < 21) {
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return ValidationResult.error("Buffer too small: expected at least 21 bytes");
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} else {
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byte nullBits = buffer.getByte(offset);
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if ((nullBits & 1) != 0) {
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int assetTypeOffset = buffer.getIntLE(offset + 9);
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if (assetTypeOffset < 0) {
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return ValidationResult.error("Invalid offset for AssetType");
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}
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int pos = offset + 21 + assetTypeOffset;
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if (pos >= buffer.writerIndex()) {
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return ValidationResult.error("Offset out of bounds for AssetType");
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}
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int assetTypeLen = VarInt.peek(buffer, pos);
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if (assetTypeLen < 0) {
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return ValidationResult.error("Invalid string length for AssetType");
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}
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if (assetTypeLen > 4096000) {
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return ValidationResult.error("AssetType exceeds max length 4096000");
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}
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pos += VarInt.length(buffer, pos);
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pos += assetTypeLen;
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if (pos > buffer.writerIndex()) {
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return ValidationResult.error("Buffer overflow reading AssetType");
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}
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}
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if ((nullBits & 2) != 0) {
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int pathOffset = buffer.getIntLE(offset + 13);
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if (pathOffset < 0) {
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return ValidationResult.error("Invalid offset for Path");
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}
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int posx = offset + 21 + pathOffset;
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if (posx >= buffer.writerIndex()) {
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return ValidationResult.error("Offset out of bounds for Path");
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}
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ValidationResult pathResult = AssetPath.validateStructure(buffer, posx);
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if (!pathResult.isValid()) {
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return ValidationResult.error("Invalid Path: " + pathResult.error());
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}
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posx += AssetPath.computeBytesConsumed(buffer, posx);
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}
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if ((nullBits & 4) != 0) {
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int commandsOffset = buffer.getIntLE(offset + 17);
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if (commandsOffset < 0) {
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return ValidationResult.error("Invalid offset for Commands");
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}
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int posxx = offset + 21 + commandsOffset;
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if (posxx >= buffer.writerIndex()) {
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return ValidationResult.error("Offset out of bounds for Commands");
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}
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int commandsCount = VarInt.peek(buffer, posxx);
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if (commandsCount < 0) {
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return ValidationResult.error("Invalid array count for Commands");
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}
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if (commandsCount > 4096000) {
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return ValidationResult.error("Commands exceeds max length 4096000");
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}
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posxx += VarInt.length(buffer, posxx);
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for (int i = 0; i < commandsCount; i++) {
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ValidationResult structResult = JsonUpdateCommand.validateStructure(buffer, posxx);
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if (!structResult.isValid()) {
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return ValidationResult.error("Invalid JsonUpdateCommand in Commands[" + i + "]: " + structResult.error());
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}
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posxx += JsonUpdateCommand.computeBytesConsumed(buffer, posxx);
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}
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}
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return ValidationResult.OK;
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}
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}
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public AssetEditorUpdateJsonAsset clone() {
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AssetEditorUpdateJsonAsset copy = new AssetEditorUpdateJsonAsset();
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copy.token = this.token;
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copy.assetType = this.assetType;
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copy.path = this.path != null ? this.path.clone() : null;
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copy.assetIndex = this.assetIndex;
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copy.commands = this.commands != null ? Arrays.stream(this.commands).map(e -> e.clone()).toArray(JsonUpdateCommand[]::new) : null;
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return copy;
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}
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@Override
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public boolean equals(Object obj) {
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if (this == obj) {
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return true;
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} else {
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return !(obj instanceof AssetEditorUpdateJsonAsset other)
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? false
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: this.token == other.token
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&& Objects.equals(this.assetType, other.assetType)
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&& Objects.equals(this.path, other.path)
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&& this.assetIndex == other.assetIndex
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&& Arrays.equals((Object[])this.commands, (Object[])other.commands);
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}
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}
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@Override
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public int hashCode() {
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int result = 1;
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result = 31 * result + Integer.hashCode(this.token);
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result = 31 * result + Objects.hashCode(this.assetType);
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result = 31 * result + Objects.hashCode(this.path);
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result = 31 * result + Integer.hashCode(this.assetIndex);
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return 31 * result + Arrays.hashCode((Object[])this.commands);
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}
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}
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