419 lines
14 KiB
Java
419 lines
14 KiB
Java
package com.hypixel.hytale.protocol.packets.interface_;
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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 CustomPage implements Packet {
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public static final int PACKET_ID = 218;
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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 = 4;
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public static final int VARIABLE_FIELD_COUNT = 3;
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public static final int VARIABLE_BLOCK_START = 16;
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public static final int MAX_SIZE = 1677721600;
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@Nullable
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public String key;
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public boolean isInitial;
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public boolean clear;
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@Nonnull
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public CustomPageLifetime lifetime = CustomPageLifetime.CantClose;
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@Nullable
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public CustomUICommand[] commands;
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@Nullable
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public CustomUIEventBinding[] eventBindings;
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@Override
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public int getId() {
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return 218;
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}
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public CustomPage() {
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}
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public CustomPage(
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@Nullable String key,
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boolean isInitial,
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boolean clear,
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@Nonnull CustomPageLifetime lifetime,
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@Nullable CustomUICommand[] commands,
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@Nullable CustomUIEventBinding[] eventBindings
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) {
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this.key = key;
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this.isInitial = isInitial;
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this.clear = clear;
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this.lifetime = lifetime;
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this.commands = commands;
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this.eventBindings = eventBindings;
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}
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public CustomPage(@Nonnull CustomPage other) {
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this.key = other.key;
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this.isInitial = other.isInitial;
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this.clear = other.clear;
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this.lifetime = other.lifetime;
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this.commands = other.commands;
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this.eventBindings = other.eventBindings;
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}
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@Nonnull
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public static CustomPage deserialize(@Nonnull ByteBuf buf, int offset) {
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CustomPage obj = new CustomPage();
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byte nullBits = buf.getByte(offset);
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obj.isInitial = buf.getByte(offset + 1) != 0;
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obj.clear = buf.getByte(offset + 2) != 0;
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obj.lifetime = CustomPageLifetime.fromValue(buf.getByte(offset + 3));
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if ((nullBits & 1) != 0) {
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int varPos0 = offset + 16 + buf.getIntLE(offset + 4);
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int keyLen = VarInt.peek(buf, varPos0);
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if (keyLen < 0) {
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throw ProtocolException.negativeLength("Key", keyLen);
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}
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if (keyLen > 4096000) {
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throw ProtocolException.stringTooLong("Key", keyLen, 4096000);
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}
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obj.key = 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 + 16 + buf.getIntLE(offset + 8);
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int commandsCount = VarInt.peek(buf, varPos1);
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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, varPos1);
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if (varPos1 + varIntLen + commandsCount * 2L > buf.readableBytes()) {
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throw ProtocolException.bufferTooSmall("Commands", varPos1 + varIntLen + commandsCount * 2, buf.readableBytes());
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}
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obj.commands = new CustomUICommand[commandsCount];
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int elemPos = varPos1 + varIntLen;
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for (int i = 0; i < commandsCount; i++) {
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obj.commands[i] = CustomUICommand.deserialize(buf, elemPos);
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elemPos += CustomUICommand.computeBytesConsumed(buf, elemPos);
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}
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}
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if ((nullBits & 4) != 0) {
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int varPos2 = offset + 16 + buf.getIntLE(offset + 12);
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int eventBindingsCount = VarInt.peek(buf, varPos2);
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if (eventBindingsCount < 0) {
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throw ProtocolException.negativeLength("EventBindings", eventBindingsCount);
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}
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if (eventBindingsCount > 4096000) {
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throw ProtocolException.arrayTooLong("EventBindings", eventBindingsCount, 4096000);
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}
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int varIntLen = VarInt.length(buf, varPos2);
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if (varPos2 + varIntLen + eventBindingsCount * 3L > buf.readableBytes()) {
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throw ProtocolException.bufferTooSmall("EventBindings", varPos2 + varIntLen + eventBindingsCount * 3, buf.readableBytes());
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}
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obj.eventBindings = new CustomUIEventBinding[eventBindingsCount];
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int elemPos = varPos2 + varIntLen;
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for (int i = 0; i < eventBindingsCount; i++) {
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obj.eventBindings[i] = CustomUIEventBinding.deserialize(buf, elemPos);
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elemPos += CustomUIEventBinding.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 = 16;
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if ((nullBits & 1) != 0) {
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int fieldOffset0 = buf.getIntLE(offset + 4);
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int pos0 = offset + 16 + 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 + 8);
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int pos1 = offset + 16 + fieldOffset1;
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int arrLen = VarInt.peek(buf, pos1);
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pos1 += VarInt.length(buf, pos1);
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for (int i = 0; i < arrLen; i++) {
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pos1 += CustomUICommand.computeBytesConsumed(buf, pos1);
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}
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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 + 12);
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int pos2 = offset + 16 + 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 += CustomUIEventBinding.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.key != null) {
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nullBits = (byte)(nullBits | 1);
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}
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if (this.commands != null) {
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nullBits = (byte)(nullBits | 2);
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}
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if (this.eventBindings != 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.writeByte(this.isInitial ? 1 : 0);
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buf.writeByte(this.clear ? 1 : 0);
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buf.writeByte(this.lifetime.getValue());
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int keyOffsetSlot = 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 eventBindingsOffsetSlot = buf.writerIndex();
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buf.writeIntLE(0);
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int varBlockStart = buf.writerIndex();
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if (this.key != null) {
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buf.setIntLE(keyOffsetSlot, buf.writerIndex() - varBlockStart);
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PacketIO.writeVarString(buf, this.key, 4096000);
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} else {
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buf.setIntLE(keyOffsetSlot, -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 (CustomUICommand 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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if (this.eventBindings != null) {
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buf.setIntLE(eventBindingsOffsetSlot, buf.writerIndex() - varBlockStart);
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if (this.eventBindings.length > 4096000) {
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throw ProtocolException.arrayTooLong("EventBindings", this.eventBindings.length, 4096000);
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}
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VarInt.write(buf, this.eventBindings.length);
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for (CustomUIEventBinding item : this.eventBindings) {
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item.serialize(buf);
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}
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} else {
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buf.setIntLE(eventBindingsOffsetSlot, -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 = 16;
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if (this.key != null) {
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size += PacketIO.stringSize(this.key);
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}
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if (this.commands != null) {
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int commandsSize = 0;
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for (CustomUICommand 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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if (this.eventBindings != null) {
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int eventBindingsSize = 0;
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for (CustomUIEventBinding elem : this.eventBindings) {
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eventBindingsSize += elem.computeSize();
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}
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size += VarInt.size(this.eventBindings.length) + eventBindingsSize;
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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 < 16) {
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return ValidationResult.error("Buffer too small: expected at least 16 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 keyOffset = buffer.getIntLE(offset + 4);
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if (keyOffset < 0) {
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return ValidationResult.error("Invalid offset for Key");
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}
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int pos = offset + 16 + keyOffset;
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if (pos >= buffer.writerIndex()) {
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return ValidationResult.error("Offset out of bounds for Key");
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}
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int keyLen = VarInt.peek(buffer, pos);
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if (keyLen < 0) {
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return ValidationResult.error("Invalid string length for Key");
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}
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if (keyLen > 4096000) {
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return ValidationResult.error("Key exceeds max length 4096000");
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}
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pos += VarInt.length(buffer, pos);
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pos += keyLen;
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if (pos > buffer.writerIndex()) {
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return ValidationResult.error("Buffer overflow reading Key");
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}
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}
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if ((nullBits & 2) != 0) {
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int commandsOffset = buffer.getIntLE(offset + 8);
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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 posx = offset + 16 + commandsOffset;
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if (posx >= 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, posx);
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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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posx += VarInt.length(buffer, posx);
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for (int i = 0; i < commandsCount; i++) {
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ValidationResult structResult = CustomUICommand.validateStructure(buffer, posx);
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if (!structResult.isValid()) {
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return ValidationResult.error("Invalid CustomUICommand in Commands[" + i + "]: " + structResult.error());
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}
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posx += CustomUICommand.computeBytesConsumed(buffer, posx);
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}
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}
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if ((nullBits & 4) != 0) {
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int eventBindingsOffset = buffer.getIntLE(offset + 12);
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if (eventBindingsOffset < 0) {
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return ValidationResult.error("Invalid offset for EventBindings");
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}
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int posxx = offset + 16 + eventBindingsOffset;
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if (posxx >= buffer.writerIndex()) {
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return ValidationResult.error("Offset out of bounds for EventBindings");
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}
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int eventBindingsCount = VarInt.peek(buffer, posxx);
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if (eventBindingsCount < 0) {
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return ValidationResult.error("Invalid array count for EventBindings");
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}
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if (eventBindingsCount > 4096000) {
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return ValidationResult.error("EventBindings 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 < eventBindingsCount; i++) {
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ValidationResult structResult = CustomUIEventBinding.validateStructure(buffer, posxx);
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if (!structResult.isValid()) {
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return ValidationResult.error("Invalid CustomUIEventBinding in EventBindings[" + i + "]: " + structResult.error());
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}
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posxx += CustomUIEventBinding.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 CustomPage clone() {
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CustomPage copy = new CustomPage();
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copy.key = this.key;
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copy.isInitial = this.isInitial;
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copy.clear = this.clear;
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copy.lifetime = this.lifetime;
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copy.commands = this.commands != null ? Arrays.stream(this.commands).map(e -> e.clone()).toArray(CustomUICommand[]::new) : null;
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copy.eventBindings = this.eventBindings != null ? Arrays.stream(this.eventBindings).map(e -> e.clone()).toArray(CustomUIEventBinding[]::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 CustomPage other)
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? false
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: Objects.equals(this.key, other.key)
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&& this.isInitial == other.isInitial
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&& this.clear == other.clear
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&& Objects.equals(this.lifetime, other.lifetime)
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&& Arrays.equals((Object[])this.commands, (Object[])other.commands)
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&& Arrays.equals((Object[])this.eventBindings, (Object[])other.eventBindings);
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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 + Objects.hashCode(this.key);
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result = 31 * result + Boolean.hashCode(this.isInitial);
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result = 31 * result + Boolean.hashCode(this.clear);
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result = 31 * result + Objects.hashCode(this.lifetime);
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result = 31 * result + Arrays.hashCode((Object[])this.commands);
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return 31 * result + Arrays.hashCode((Object[])this.eventBindings);
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}
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}
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