301 lines
9.1 KiB
Java
301 lines
9.1 KiB
Java
package com.hypixel.hytale.protocol.packets.asseteditor;
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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 AuthorInfo {
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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 = 49152028;
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@Nullable
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public String name;
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@Nullable
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public String email;
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@Nullable
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public String url;
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public AuthorInfo() {
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}
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public AuthorInfo(@Nullable String name, @Nullable String email, @Nullable String url) {
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this.name = name;
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this.email = email;
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this.url = url;
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}
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public AuthorInfo(@Nonnull AuthorInfo other) {
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this.name = other.name;
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this.email = other.email;
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this.url = other.url;
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}
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@Nonnull
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public static AuthorInfo deserialize(@Nonnull ByteBuf buf, int offset) {
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AuthorInfo obj = new AuthorInfo();
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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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int nameLen = VarInt.peek(buf, varPos0);
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if (nameLen < 0) {
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throw ProtocolException.negativeLength("Name", nameLen);
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}
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if (nameLen > 4096000) {
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throw ProtocolException.stringTooLong("Name", nameLen, 4096000);
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}
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obj.name = 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 + 13 + buf.getIntLE(offset + 5);
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int emailLen = VarInt.peek(buf, varPos1);
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if (emailLen < 0) {
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throw ProtocolException.negativeLength("Email", emailLen);
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}
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if (emailLen > 4096000) {
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throw ProtocolException.stringTooLong("Email", emailLen, 4096000);
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}
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obj.email = 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 urlLen = VarInt.peek(buf, varPos2);
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if (urlLen < 0) {
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throw ProtocolException.negativeLength("Url", urlLen);
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}
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if (urlLen > 4096000) {
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throw ProtocolException.stringTooLong("Url", urlLen, 4096000);
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}
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obj.url = 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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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 + 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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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.name != null) {
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nullBits = (byte)(nullBits | 1);
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}
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if (this.email != null) {
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nullBits = (byte)(nullBits | 2);
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}
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if (this.url != 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 nameOffsetSlot = buf.writerIndex();
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buf.writeIntLE(0);
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int emailOffsetSlot = buf.writerIndex();
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buf.writeIntLE(0);
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int urlOffsetSlot = buf.writerIndex();
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buf.writeIntLE(0);
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int varBlockStart = buf.writerIndex();
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if (this.name != null) {
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buf.setIntLE(nameOffsetSlot, buf.writerIndex() - varBlockStart);
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PacketIO.writeVarString(buf, this.name, 4096000);
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} else {
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buf.setIntLE(nameOffsetSlot, -1);
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}
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if (this.email != null) {
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buf.setIntLE(emailOffsetSlot, buf.writerIndex() - varBlockStart);
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PacketIO.writeVarString(buf, this.email, 4096000);
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} else {
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buf.setIntLE(emailOffsetSlot, -1);
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}
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if (this.url != null) {
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buf.setIntLE(urlOffsetSlot, buf.writerIndex() - varBlockStart);
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PacketIO.writeVarString(buf, this.url, 4096000);
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} else {
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buf.setIntLE(urlOffsetSlot, -1);
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}
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}
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public int computeSize() {
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int size = 13;
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if (this.name != null) {
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size += PacketIO.stringSize(this.name);
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}
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if (this.email != null) {
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size += PacketIO.stringSize(this.email);
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}
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if (this.url != null) {
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size += PacketIO.stringSize(this.url);
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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 nameOffset = buffer.getIntLE(offset + 1);
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if (nameOffset < 0) {
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return ValidationResult.error("Invalid offset for Name");
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}
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int pos = offset + 13 + nameOffset;
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if (pos >= buffer.writerIndex()) {
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return ValidationResult.error("Offset out of bounds for Name");
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}
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int nameLen = VarInt.peek(buffer, pos);
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if (nameLen < 0) {
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return ValidationResult.error("Invalid string length for Name");
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}
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if (nameLen > 4096000) {
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return ValidationResult.error("Name exceeds max length 4096000");
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}
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pos += VarInt.length(buffer, pos);
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pos += nameLen;
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if (pos > buffer.writerIndex()) {
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return ValidationResult.error("Buffer overflow reading Name");
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}
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}
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if ((nullBits & 2) != 0) {
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int emailOffset = buffer.getIntLE(offset + 5);
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if (emailOffset < 0) {
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return ValidationResult.error("Invalid offset for Email");
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}
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int posx = offset + 13 + emailOffset;
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if (posx >= buffer.writerIndex()) {
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return ValidationResult.error("Offset out of bounds for Email");
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}
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int emailLen = VarInt.peek(buffer, posx);
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if (emailLen < 0) {
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return ValidationResult.error("Invalid string length for Email");
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}
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if (emailLen > 4096000) {
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return ValidationResult.error("Email exceeds max length 4096000");
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}
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posx += VarInt.length(buffer, posx);
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posx += emailLen;
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if (posx > buffer.writerIndex()) {
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return ValidationResult.error("Buffer overflow reading Email");
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}
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}
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if ((nullBits & 4) != 0) {
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int urlOffset = buffer.getIntLE(offset + 9);
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if (urlOffset < 0) {
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return ValidationResult.error("Invalid offset for Url");
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}
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int posxx = offset + 13 + urlOffset;
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if (posxx >= buffer.writerIndex()) {
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return ValidationResult.error("Offset out of bounds for Url");
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}
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int urlLen = VarInt.peek(buffer, posxx);
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if (urlLen < 0) {
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return ValidationResult.error("Invalid string length for Url");
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}
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if (urlLen > 4096000) {
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return ValidationResult.error("Url exceeds max length 4096000");
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}
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posxx += VarInt.length(buffer, posxx);
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posxx += urlLen;
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if (posxx > buffer.writerIndex()) {
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return ValidationResult.error("Buffer overflow reading Url");
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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 AuthorInfo clone() {
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AuthorInfo copy = new AuthorInfo();
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copy.name = this.name;
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copy.email = this.email;
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copy.url = this.url;
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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 AuthorInfo other)
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? false
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: Objects.equals(this.name, other.name) && Objects.equals(this.email, other.email) && Objects.equals(this.url, other.url);
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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.name, this.email, this.url);
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}
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}
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