276 lines
8.7 KiB
Java
276 lines
8.7 KiB
Java
package com.hypixel.hytale.protocol.packets.interface_;
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import com.hypixel.hytale.protocol.FormattedMessage;
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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 KillFeedMessage implements Packet {
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public static final int PACKET_ID = 213;
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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 FormattedMessage killer;
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@Nullable
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public FormattedMessage decedent;
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@Nullable
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public String icon;
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@Override
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public int getId() {
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return 213;
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}
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public KillFeedMessage() {
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}
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public KillFeedMessage(@Nullable FormattedMessage killer, @Nullable FormattedMessage decedent, @Nullable String icon) {
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this.killer = killer;
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this.decedent = decedent;
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this.icon = icon;
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}
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public KillFeedMessage(@Nonnull KillFeedMessage other) {
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this.killer = other.killer;
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this.decedent = other.decedent;
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this.icon = other.icon;
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}
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@Nonnull
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public static KillFeedMessage deserialize(@Nonnull ByteBuf buf, int offset) {
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KillFeedMessage obj = new KillFeedMessage();
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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.killer = FormattedMessage.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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obj.decedent = FormattedMessage.deserialize(buf, varPos1);
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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 iconLen = VarInt.peek(buf, varPos2);
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if (iconLen < 0) {
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throw ProtocolException.negativeLength("Icon", iconLen);
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}
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if (iconLen > 4096000) {
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throw ProtocolException.stringTooLong("Icon", iconLen, 4096000);
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}
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obj.icon = 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 += FormattedMessage.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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pos1 += FormattedMessage.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 + 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.killer != null) {
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nullBits = (byte)(nullBits | 1);
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}
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if (this.decedent != null) {
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nullBits = (byte)(nullBits | 2);
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}
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if (this.icon != 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 killerOffsetSlot = buf.writerIndex();
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buf.writeIntLE(0);
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int decedentOffsetSlot = buf.writerIndex();
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buf.writeIntLE(0);
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int iconOffsetSlot = buf.writerIndex();
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buf.writeIntLE(0);
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int varBlockStart = buf.writerIndex();
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if (this.killer != null) {
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buf.setIntLE(killerOffsetSlot, buf.writerIndex() - varBlockStart);
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this.killer.serialize(buf);
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} else {
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buf.setIntLE(killerOffsetSlot, -1);
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}
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if (this.decedent != null) {
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buf.setIntLE(decedentOffsetSlot, buf.writerIndex() - varBlockStart);
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this.decedent.serialize(buf);
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} else {
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buf.setIntLE(decedentOffsetSlot, -1);
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}
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if (this.icon != null) {
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buf.setIntLE(iconOffsetSlot, buf.writerIndex() - varBlockStart);
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PacketIO.writeVarString(buf, this.icon, 4096000);
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} else {
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buf.setIntLE(iconOffsetSlot, -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.killer != null) {
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size += this.killer.computeSize();
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}
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if (this.decedent != null) {
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size += this.decedent.computeSize();
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}
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if (this.icon != null) {
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size += PacketIO.stringSize(this.icon);
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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 killerOffset = buffer.getIntLE(offset + 1);
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if (killerOffset < 0) {
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return ValidationResult.error("Invalid offset for Killer");
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}
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int pos = offset + 13 + killerOffset;
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if (pos >= buffer.writerIndex()) {
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return ValidationResult.error("Offset out of bounds for Killer");
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}
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ValidationResult killerResult = FormattedMessage.validateStructure(buffer, pos);
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if (!killerResult.isValid()) {
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return ValidationResult.error("Invalid Killer: " + killerResult.error());
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}
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pos += FormattedMessage.computeBytesConsumed(buffer, pos);
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}
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if ((nullBits & 2) != 0) {
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int decedentOffset = buffer.getIntLE(offset + 5);
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if (decedentOffset < 0) {
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return ValidationResult.error("Invalid offset for Decedent");
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}
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int posx = offset + 13 + decedentOffset;
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if (posx >= buffer.writerIndex()) {
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return ValidationResult.error("Offset out of bounds for Decedent");
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}
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ValidationResult decedentResult = FormattedMessage.validateStructure(buffer, posx);
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if (!decedentResult.isValid()) {
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return ValidationResult.error("Invalid Decedent: " + decedentResult.error());
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}
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posx += FormattedMessage.computeBytesConsumed(buffer, posx);
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}
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if ((nullBits & 4) != 0) {
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int iconOffset = buffer.getIntLE(offset + 9);
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if (iconOffset < 0) {
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return ValidationResult.error("Invalid offset for Icon");
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}
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int posxx = offset + 13 + iconOffset;
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if (posxx >= buffer.writerIndex()) {
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return ValidationResult.error("Offset out of bounds for Icon");
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}
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int iconLen = VarInt.peek(buffer, posxx);
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if (iconLen < 0) {
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return ValidationResult.error("Invalid string length for Icon");
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}
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if (iconLen > 4096000) {
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return ValidationResult.error("Icon exceeds max length 4096000");
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}
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posxx += VarInt.length(buffer, posxx);
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posxx += iconLen;
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if (posxx > buffer.writerIndex()) {
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return ValidationResult.error("Buffer overflow reading Icon");
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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 KillFeedMessage clone() {
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KillFeedMessage copy = new KillFeedMessage();
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copy.killer = this.killer != null ? this.killer.clone() : null;
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copy.decedent = this.decedent != null ? this.decedent.clone() : null;
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copy.icon = this.icon;
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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 KillFeedMessage other)
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? false
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: Objects.equals(this.killer, other.killer) && Objects.equals(this.decedent, other.decedent) && Objects.equals(this.icon, other.icon);
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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.killer, this.decedent, this.icon);
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}
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}
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