294 lines
9.4 KiB
Java
294 lines
9.4 KiB
Java
package com.hypixel.hytale.protocol.packets.machinima;
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import com.hypixel.hytale.protocol.Model;
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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.Objects;
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import javax.annotation.Nonnull;
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import javax.annotation.Nullable;
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public class SetMachinimaActorModel implements Packet {
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public static final int PACKET_ID = 261;
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public static final boolean IS_COMPRESSED = false;
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public static final int NULLABLE_BIT_FIELD_SIZE = 1;
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public static final int FIXED_BLOCK_SIZE = 1;
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public static final int VARIABLE_FIELD_COUNT = 3;
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public static final int VARIABLE_BLOCK_START = 13;
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public static final int MAX_SIZE = 1677721600;
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@Nullable
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public Model model;
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@Nullable
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public String sceneName;
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@Nullable
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public String actorName;
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@Override
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public int getId() {
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return 261;
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}
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public SetMachinimaActorModel() {
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}
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public SetMachinimaActorModel(@Nullable Model model, @Nullable String sceneName, @Nullable String actorName) {
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this.model = model;
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this.sceneName = sceneName;
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this.actorName = actorName;
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}
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public SetMachinimaActorModel(@Nonnull SetMachinimaActorModel other) {
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this.model = other.model;
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this.sceneName = other.sceneName;
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this.actorName = other.actorName;
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}
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@Nonnull
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public static SetMachinimaActorModel deserialize(@Nonnull ByteBuf buf, int offset) {
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SetMachinimaActorModel obj = new SetMachinimaActorModel();
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byte nullBits = buf.getByte(offset);
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if ((nullBits & 1) != 0) {
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int varPos0 = offset + 13 + buf.getIntLE(offset + 1);
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obj.model = Model.deserialize(buf, varPos0);
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}
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if ((nullBits & 2) != 0) {
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int varPos1 = offset + 13 + buf.getIntLE(offset + 5);
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int sceneNameLen = VarInt.peek(buf, varPos1);
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if (sceneNameLen < 0) {
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throw ProtocolException.negativeLength("SceneName", sceneNameLen);
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}
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if (sceneNameLen > 4096000) {
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throw ProtocolException.stringTooLong("SceneName", sceneNameLen, 4096000);
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}
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obj.sceneName = PacketIO.readVarString(buf, varPos1, PacketIO.UTF8);
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}
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if ((nullBits & 4) != 0) {
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int varPos2 = offset + 13 + buf.getIntLE(offset + 9);
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int actorNameLen = VarInt.peek(buf, varPos2);
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if (actorNameLen < 0) {
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throw ProtocolException.negativeLength("ActorName", actorNameLen);
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}
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if (actorNameLen > 4096000) {
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throw ProtocolException.stringTooLong("ActorName", actorNameLen, 4096000);
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}
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obj.actorName = PacketIO.readVarString(buf, varPos2, PacketIO.UTF8);
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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 = 13;
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if ((nullBits & 1) != 0) {
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int fieldOffset0 = buf.getIntLE(offset + 1);
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int pos0 = offset + 13 + fieldOffset0;
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pos0 += Model.computeBytesConsumed(buf, pos0);
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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 + 5);
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int pos1 = offset + 13 + fieldOffset1;
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int sl = VarInt.peek(buf, pos1);
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pos1 += VarInt.length(buf, pos1) + sl;
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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 + 9);
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int pos2 = offset + 13 + fieldOffset2;
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int sl = VarInt.peek(buf, pos2);
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pos2 += VarInt.length(buf, pos2) + sl;
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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.model != null) {
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nullBits = (byte)(nullBits | 1);
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}
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if (this.sceneName != null) {
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nullBits = (byte)(nullBits | 2);
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}
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if (this.actorName != null) {
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nullBits = (byte)(nullBits | 4);
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}
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buf.writeByte(nullBits);
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int modelOffsetSlot = buf.writerIndex();
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buf.writeIntLE(0);
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int sceneNameOffsetSlot = buf.writerIndex();
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buf.writeIntLE(0);
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int actorNameOffsetSlot = buf.writerIndex();
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buf.writeIntLE(0);
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int varBlockStart = buf.writerIndex();
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if (this.model != null) {
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buf.setIntLE(modelOffsetSlot, buf.writerIndex() - varBlockStart);
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this.model.serialize(buf);
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} else {
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buf.setIntLE(modelOffsetSlot, -1);
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}
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if (this.sceneName != null) {
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buf.setIntLE(sceneNameOffsetSlot, buf.writerIndex() - varBlockStart);
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PacketIO.writeVarString(buf, this.sceneName, 4096000);
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} else {
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buf.setIntLE(sceneNameOffsetSlot, -1);
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}
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if (this.actorName != null) {
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buf.setIntLE(actorNameOffsetSlot, buf.writerIndex() - varBlockStart);
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PacketIO.writeVarString(buf, this.actorName, 4096000);
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} else {
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buf.setIntLE(actorNameOffsetSlot, -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 = 13;
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if (this.model != null) {
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size += this.model.computeSize();
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}
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if (this.sceneName != null) {
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size += PacketIO.stringSize(this.sceneName);
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}
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if (this.actorName != null) {
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size += PacketIO.stringSize(this.actorName);
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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 < 13) {
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return ValidationResult.error("Buffer too small: expected at least 13 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 modelOffset = buffer.getIntLE(offset + 1);
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if (modelOffset < 0) {
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return ValidationResult.error("Invalid offset for Model");
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}
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int pos = offset + 13 + modelOffset;
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if (pos >= buffer.writerIndex()) {
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return ValidationResult.error("Offset out of bounds for Model");
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}
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ValidationResult modelResult = Model.validateStructure(buffer, pos);
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if (!modelResult.isValid()) {
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return ValidationResult.error("Invalid Model: " + modelResult.error());
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}
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pos += Model.computeBytesConsumed(buffer, pos);
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}
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if ((nullBits & 2) != 0) {
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int sceneNameOffset = buffer.getIntLE(offset + 5);
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if (sceneNameOffset < 0) {
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return ValidationResult.error("Invalid offset for SceneName");
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}
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int posx = offset + 13 + sceneNameOffset;
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if (posx >= buffer.writerIndex()) {
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return ValidationResult.error("Offset out of bounds for SceneName");
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}
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int sceneNameLen = VarInt.peek(buffer, posx);
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if (sceneNameLen < 0) {
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return ValidationResult.error("Invalid string length for SceneName");
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}
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if (sceneNameLen > 4096000) {
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return ValidationResult.error("SceneName exceeds max length 4096000");
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}
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posx += VarInt.length(buffer, posx);
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posx += sceneNameLen;
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if (posx > buffer.writerIndex()) {
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return ValidationResult.error("Buffer overflow reading SceneName");
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}
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}
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if ((nullBits & 4) != 0) {
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int actorNameOffset = buffer.getIntLE(offset + 9);
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if (actorNameOffset < 0) {
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return ValidationResult.error("Invalid offset for ActorName");
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}
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int posxx = offset + 13 + actorNameOffset;
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if (posxx >= buffer.writerIndex()) {
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return ValidationResult.error("Offset out of bounds for ActorName");
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}
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int actorNameLen = VarInt.peek(buffer, posxx);
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if (actorNameLen < 0) {
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return ValidationResult.error("Invalid string length for ActorName");
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}
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if (actorNameLen > 4096000) {
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return ValidationResult.error("ActorName exceeds max length 4096000");
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}
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posxx += VarInt.length(buffer, posxx);
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posxx += actorNameLen;
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if (posxx > buffer.writerIndex()) {
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return ValidationResult.error("Buffer overflow reading ActorName");
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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 SetMachinimaActorModel clone() {
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SetMachinimaActorModel copy = new SetMachinimaActorModel();
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copy.model = this.model != null ? this.model.clone() : null;
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copy.sceneName = this.sceneName;
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copy.actorName = this.actorName;
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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 SetMachinimaActorModel other)
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? false
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: Objects.equals(this.model, other.model) && Objects.equals(this.sceneName, other.sceneName) && Objects.equals(this.actorName, other.actorName);
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}
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}
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@Override
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public int hashCode() {
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return Objects.hash(this.model, this.sceneName, this.actorName);
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}
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}
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