574 lines
19 KiB
Java
574 lines
19 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.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 AssetPackManifest {
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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 = 6;
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public static final int VARIABLE_BLOCK_START = 25;
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public static final int MAX_SIZE = 1677721600;
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@Nullable
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public String name;
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@Nullable
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public String group;
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@Nullable
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public String website;
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@Nullable
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public String description;
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@Nullable
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public String version;
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@Nullable
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public AuthorInfo[] authors;
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public AssetPackManifest() {
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}
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public AssetPackManifest(
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@Nullable String name,
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@Nullable String group,
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@Nullable String website,
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@Nullable String description,
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@Nullable String version,
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@Nullable AuthorInfo[] authors
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) {
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this.name = name;
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this.group = group;
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this.website = website;
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this.description = description;
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this.version = version;
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this.authors = authors;
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}
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public AssetPackManifest(@Nonnull AssetPackManifest other) {
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this.name = other.name;
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this.group = other.group;
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this.website = other.website;
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this.description = other.description;
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this.version = other.version;
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this.authors = other.authors;
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}
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@Nonnull
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public static AssetPackManifest deserialize(@Nonnull ByteBuf buf, int offset) {
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AssetPackManifest obj = new AssetPackManifest();
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byte nullBits = buf.getByte(offset);
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if ((nullBits & 1) != 0) {
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int varPos0 = offset + 25 + 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 + 25 + buf.getIntLE(offset + 5);
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int groupLen = VarInt.peek(buf, varPos1);
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if (groupLen < 0) {
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throw ProtocolException.negativeLength("Group", groupLen);
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}
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if (groupLen > 4096000) {
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throw ProtocolException.stringTooLong("Group", groupLen, 4096000);
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}
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obj.group = 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 + 25 + buf.getIntLE(offset + 9);
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int websiteLen = VarInt.peek(buf, varPos2);
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if (websiteLen < 0) {
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throw ProtocolException.negativeLength("Website", websiteLen);
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}
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if (websiteLen > 4096000) {
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throw ProtocolException.stringTooLong("Website", websiteLen, 4096000);
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}
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obj.website = PacketIO.readVarString(buf, varPos2, PacketIO.UTF8);
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}
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if ((nullBits & 8) != 0) {
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int varPos3 = offset + 25 + buf.getIntLE(offset + 13);
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int descriptionLen = VarInt.peek(buf, varPos3);
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if (descriptionLen < 0) {
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throw ProtocolException.negativeLength("Description", descriptionLen);
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}
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if (descriptionLen > 4096000) {
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throw ProtocolException.stringTooLong("Description", descriptionLen, 4096000);
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}
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obj.description = PacketIO.readVarString(buf, varPos3, PacketIO.UTF8);
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}
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if ((nullBits & 16) != 0) {
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int varPos4 = offset + 25 + buf.getIntLE(offset + 17);
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int versionLen = VarInt.peek(buf, varPos4);
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if (versionLen < 0) {
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throw ProtocolException.negativeLength("Version", versionLen);
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}
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if (versionLen > 4096000) {
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throw ProtocolException.stringTooLong("Version", versionLen, 4096000);
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}
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obj.version = PacketIO.readVarString(buf, varPos4, PacketIO.UTF8);
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}
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if ((nullBits & 32) != 0) {
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int varPos5 = offset + 25 + buf.getIntLE(offset + 21);
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int authorsCount = VarInt.peek(buf, varPos5);
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if (authorsCount < 0) {
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throw ProtocolException.negativeLength("Authors", authorsCount);
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}
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if (authorsCount > 4096000) {
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throw ProtocolException.arrayTooLong("Authors", authorsCount, 4096000);
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}
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int varIntLen = VarInt.length(buf, varPos5);
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if (varPos5 + varIntLen + authorsCount * 1L > buf.readableBytes()) {
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throw ProtocolException.bufferTooSmall("Authors", varPos5 + varIntLen + authorsCount * 1, buf.readableBytes());
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}
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obj.authors = new AuthorInfo[authorsCount];
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int elemPos = varPos5 + varIntLen;
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for (int i = 0; i < authorsCount; i++) {
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obj.authors[i] = AuthorInfo.deserialize(buf, elemPos);
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elemPos += AuthorInfo.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 = 25;
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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 + 25 + 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 + 25 + 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 + 25 + 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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if ((nullBits & 8) != 0) {
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int fieldOffset3 = buf.getIntLE(offset + 13);
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int pos3 = offset + 25 + fieldOffset3;
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int sl = VarInt.peek(buf, pos3);
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pos3 += VarInt.length(buf, pos3) + sl;
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if (pos3 - offset > maxEnd) {
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maxEnd = pos3 - offset;
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}
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}
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if ((nullBits & 16) != 0) {
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int fieldOffset4 = buf.getIntLE(offset + 17);
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int pos4 = offset + 25 + fieldOffset4;
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int sl = VarInt.peek(buf, pos4);
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pos4 += VarInt.length(buf, pos4) + sl;
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if (pos4 - offset > maxEnd) {
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maxEnd = pos4 - offset;
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}
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}
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if ((nullBits & 32) != 0) {
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int fieldOffset5 = buf.getIntLE(offset + 21);
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int pos5 = offset + 25 + fieldOffset5;
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int arrLen = VarInt.peek(buf, pos5);
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pos5 += VarInt.length(buf, pos5);
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for (int i = 0; i < arrLen; i++) {
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pos5 += AuthorInfo.computeBytesConsumed(buf, pos5);
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}
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if (pos5 - offset > maxEnd) {
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maxEnd = pos5 - 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.group != null) {
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nullBits = (byte)(nullBits | 2);
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}
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if (this.website != null) {
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nullBits = (byte)(nullBits | 4);
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}
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if (this.description != null) {
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nullBits = (byte)(nullBits | 8);
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}
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if (this.version != null) {
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nullBits = (byte)(nullBits | 16);
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}
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if (this.authors != null) {
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nullBits = (byte)(nullBits | 32);
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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 groupOffsetSlot = buf.writerIndex();
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buf.writeIntLE(0);
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int websiteOffsetSlot = buf.writerIndex();
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buf.writeIntLE(0);
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int descriptionOffsetSlot = buf.writerIndex();
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buf.writeIntLE(0);
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int versionOffsetSlot = buf.writerIndex();
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buf.writeIntLE(0);
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int authorsOffsetSlot = 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.group != null) {
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buf.setIntLE(groupOffsetSlot, buf.writerIndex() - varBlockStart);
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PacketIO.writeVarString(buf, this.group, 4096000);
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} else {
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buf.setIntLE(groupOffsetSlot, -1);
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}
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if (this.website != null) {
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buf.setIntLE(websiteOffsetSlot, buf.writerIndex() - varBlockStart);
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PacketIO.writeVarString(buf, this.website, 4096000);
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} else {
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buf.setIntLE(websiteOffsetSlot, -1);
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}
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if (this.description != null) {
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buf.setIntLE(descriptionOffsetSlot, buf.writerIndex() - varBlockStart);
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PacketIO.writeVarString(buf, this.description, 4096000);
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} else {
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buf.setIntLE(descriptionOffsetSlot, -1);
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}
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if (this.version != null) {
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buf.setIntLE(versionOffsetSlot, buf.writerIndex() - varBlockStart);
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PacketIO.writeVarString(buf, this.version, 4096000);
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} else {
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buf.setIntLE(versionOffsetSlot, -1);
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}
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if (this.authors != null) {
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buf.setIntLE(authorsOffsetSlot, buf.writerIndex() - varBlockStart);
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if (this.authors.length > 4096000) {
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throw ProtocolException.arrayTooLong("Authors", this.authors.length, 4096000);
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}
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VarInt.write(buf, this.authors.length);
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for (AuthorInfo item : this.authors) {
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item.serialize(buf);
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}
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} else {
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buf.setIntLE(authorsOffsetSlot, -1);
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}
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}
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public int computeSize() {
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int size = 25;
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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.group != null) {
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size += PacketIO.stringSize(this.group);
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}
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if (this.website != null) {
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size += PacketIO.stringSize(this.website);
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}
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if (this.description != null) {
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size += PacketIO.stringSize(this.description);
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}
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if (this.version != null) {
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size += PacketIO.stringSize(this.version);
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}
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if (this.authors != null) {
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int authorsSize = 0;
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for (AuthorInfo elem : this.authors) {
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authorsSize += elem.computeSize();
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}
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size += VarInt.size(this.authors.length) + authorsSize;
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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 < 25) {
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return ValidationResult.error("Buffer too small: expected at least 25 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 + 25 + 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 groupOffset = buffer.getIntLE(offset + 5);
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if (groupOffset < 0) {
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return ValidationResult.error("Invalid offset for Group");
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}
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int posx = offset + 25 + groupOffset;
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if (posx >= buffer.writerIndex()) {
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return ValidationResult.error("Offset out of bounds for Group");
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}
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int groupLen = VarInt.peek(buffer, posx);
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if (groupLen < 0) {
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return ValidationResult.error("Invalid string length for Group");
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}
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if (groupLen > 4096000) {
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return ValidationResult.error("Group exceeds max length 4096000");
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}
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posx += VarInt.length(buffer, posx);
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posx += groupLen;
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if (posx > buffer.writerIndex()) {
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return ValidationResult.error("Buffer overflow reading Group");
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}
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}
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if ((nullBits & 4) != 0) {
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int websiteOffset = buffer.getIntLE(offset + 9);
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if (websiteOffset < 0) {
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return ValidationResult.error("Invalid offset for Website");
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}
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int posxx = offset + 25 + websiteOffset;
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if (posxx >= buffer.writerIndex()) {
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return ValidationResult.error("Offset out of bounds for Website");
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}
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int websiteLen = VarInt.peek(buffer, posxx);
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if (websiteLen < 0) {
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return ValidationResult.error("Invalid string length for Website");
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}
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if (websiteLen > 4096000) {
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return ValidationResult.error("Website exceeds max length 4096000");
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}
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posxx += VarInt.length(buffer, posxx);
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posxx += websiteLen;
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if (posxx > buffer.writerIndex()) {
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return ValidationResult.error("Buffer overflow reading Website");
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}
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}
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if ((nullBits & 8) != 0) {
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int descriptionOffset = buffer.getIntLE(offset + 13);
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if (descriptionOffset < 0) {
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return ValidationResult.error("Invalid offset for Description");
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}
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int posxxx = offset + 25 + descriptionOffset;
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if (posxxx >= buffer.writerIndex()) {
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return ValidationResult.error("Offset out of bounds for Description");
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}
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int descriptionLen = VarInt.peek(buffer, posxxx);
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if (descriptionLen < 0) {
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return ValidationResult.error("Invalid string length for Description");
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}
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if (descriptionLen > 4096000) {
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return ValidationResult.error("Description exceeds max length 4096000");
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}
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posxxx += VarInt.length(buffer, posxxx);
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posxxx += descriptionLen;
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if (posxxx > buffer.writerIndex()) {
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return ValidationResult.error("Buffer overflow reading Description");
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}
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}
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if ((nullBits & 16) != 0) {
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int versionOffset = buffer.getIntLE(offset + 17);
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if (versionOffset < 0) {
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return ValidationResult.error("Invalid offset for Version");
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}
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int posxxxx = offset + 25 + versionOffset;
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if (posxxxx >= buffer.writerIndex()) {
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return ValidationResult.error("Offset out of bounds for Version");
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}
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int versionLen = VarInt.peek(buffer, posxxxx);
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if (versionLen < 0) {
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return ValidationResult.error("Invalid string length for Version");
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}
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if (versionLen > 4096000) {
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return ValidationResult.error("Version exceeds max length 4096000");
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}
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posxxxx += VarInt.length(buffer, posxxxx);
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posxxxx += versionLen;
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if (posxxxx > buffer.writerIndex()) {
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return ValidationResult.error("Buffer overflow reading Version");
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}
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}
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if ((nullBits & 32) != 0) {
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int authorsOffset = buffer.getIntLE(offset + 21);
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if (authorsOffset < 0) {
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return ValidationResult.error("Invalid offset for Authors");
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}
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int posxxxxx = offset + 25 + authorsOffset;
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if (posxxxxx >= buffer.writerIndex()) {
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return ValidationResult.error("Offset out of bounds for Authors");
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}
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int authorsCount = VarInt.peek(buffer, posxxxxx);
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if (authorsCount < 0) {
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return ValidationResult.error("Invalid array count for Authors");
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}
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if (authorsCount > 4096000) {
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return ValidationResult.error("Authors exceeds max length 4096000");
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}
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posxxxxx += VarInt.length(buffer, posxxxxx);
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for (int i = 0; i < authorsCount; i++) {
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ValidationResult structResult = AuthorInfo.validateStructure(buffer, posxxxxx);
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if (!structResult.isValid()) {
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return ValidationResult.error("Invalid AuthorInfo in Authors[" + i + "]: " + structResult.error());
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}
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posxxxxx += AuthorInfo.computeBytesConsumed(buffer, posxxxxx);
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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 AssetPackManifest clone() {
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AssetPackManifest copy = new AssetPackManifest();
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copy.name = this.name;
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copy.group = this.group;
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copy.website = this.website;
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copy.description = this.description;
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|
copy.version = this.version;
|
|
copy.authors = this.authors != null ? Arrays.stream(this.authors).map(e -> e.clone()).toArray(AuthorInfo[]::new) : null;
|
|
return copy;
|
|
}
|
|
|
|
@Override
|
|
public boolean equals(Object obj) {
|
|
if (this == obj) {
|
|
return true;
|
|
} else {
|
|
return !(obj instanceof AssetPackManifest other)
|
|
? false
|
|
: Objects.equals(this.name, other.name)
|
|
&& Objects.equals(this.group, other.group)
|
|
&& Objects.equals(this.website, other.website)
|
|
&& Objects.equals(this.description, other.description)
|
|
&& Objects.equals(this.version, other.version)
|
|
&& Arrays.equals((Object[])this.authors, (Object[])other.authors);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public int hashCode() {
|
|
int result = 1;
|
|
result = 31 * result + Objects.hashCode(this.name);
|
|
result = 31 * result + Objects.hashCode(this.group);
|
|
result = 31 * result + Objects.hashCode(this.website);
|
|
result = 31 * result + Objects.hashCode(this.description);
|
|
result = 31 * result + Objects.hashCode(this.version);
|
|
return 31 * result + Arrays.hashCode((Object[])this.authors);
|
|
}
|
|
}
|