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Change item id to int, fix valid string being considered as invalid, tests

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This commit is contained in:
creeper123123321 2018-10-27 11:55:17 -03:00
parent d1b22b0f82
commit 6652a7fd83
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GPG Key ID: 0AC57D54786721D1
17 changed files with 221 additions and 44 deletions
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21
common/src/main/java/us/myles/ViaVersion/api/minecraft/item/Item.java
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@ -8,9 +8,28 @@ import lombok.*;
@NoArgsConstructor
@AllArgsConstructor
@ToString
@EqualsAndHashCode
public class Item {
private short id;
private int identifier;
private byte amount;
private short data;
private CompoundTag tag;
@Deprecated
public short getId() {
return (short) identifier;
}
@Deprecated
public void setId(short id) {
identifier = id;
}
@Deprecated
public Item(short id, byte amount, short data, CompoundTag tag) {
this.identifier = id;
this.amount = amount;
this.data = data;
this.tag = tag;
}
}

13
common/src/main/java/us/myles/ViaVersion/api/type/types/StringType.java
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@ -6,6 +6,10 @@ import io.netty.buffer.ByteBuf;
import us.myles.ViaVersion.api.type.Type;
public class StringType extends Type<String> {
// String#length() (used to limit the string in Minecraft source code) uses char[]#length
private static final int maxJavaCharUtf8Length = Character.toString(Character.MAX_VALUE)
.getBytes(Charsets.UTF_8).length;
public StringType() {
super(String.class);
}
@ -13,12 +17,17 @@ public class StringType extends Type<String> {
@Override
public String read(ByteBuf buffer) throws Exception {
int len = Type.VAR_INT.read(buffer);
Preconditions.checkArgument(len <= Short.MAX_VALUE, "Cannot receive string longer than Short.MAX_VALUE (got %s characters)", len);
Preconditions.checkArgument(len <= Short.MAX_VALUE * maxJavaCharUtf8Length,
"Cannot receive string longer than Short.MAX_VALUE * " + maxJavaCharUtf8Length + " bytes (got %s bytes)", len);
byte[] b = new byte[len];
buffer.readBytes(b);
String string = new String(b, Charsets.UTF_8);
Preconditions.checkArgument(string.length() <= Short.MAX_VALUE,
"Cannot receive string longer than Short.MAX_VALUE characters (got %s bytes)", string.length());
return new String(b, Charsets.UTF_8);
return string;
}
@Override

4
common/src/main/java/us/myles/ViaVersion/api/type/types/minecraft/FlatItemType.java
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@ -16,7 +16,7 @@ public class FlatItemType extends BaseItemType {
return null;
} else {
Item item = new Item();
item.setId(id);
item.setIdentifier(id);
item.setAmount(buffer.readByte());
item.setTag(Type.NBT.read(buffer));
return item;
@ -28,7 +28,7 @@ public class FlatItemType extends BaseItemType {
if (object == null) {
buffer.writeShort(-1);
} else {
buffer.writeShort(object.getId());
buffer.writeShort(object.getIdentifier());
buffer.writeByte(object.getAmount());
Type.NBT.write(buffer, object.getTag());
}

4
common/src/main/java/us/myles/ViaVersion/api/type/types/minecraft/FlatVarIntItemType.java
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@ -16,7 +16,7 @@ public class FlatVarIntItemType extends BaseItemType {
return null;
} else {
Item item = new Item();
item.setId(Type.VAR_INT.read(buffer).shortValue()); //TODO Maybe we should consider changing id field type to int
item.setIdentifier(Type.VAR_INT.read(buffer));
item.setAmount(buffer.readByte());
item.setTag(Type.NBT.read(buffer));
return item;
@ -29,7 +29,7 @@ public class FlatVarIntItemType extends BaseItemType {
buffer.writeBoolean(false);
} else {
buffer.writeBoolean(true);
Type.VAR_INT.write(buffer, (int) object.getId());
Type.VAR_INT.write(buffer, object.getIdentifier());
buffer.writeByte(object.getAmount());
Type.NBT.write(buffer, object.getTag());
}

4
common/src/main/java/us/myles/ViaVersion/api/type/types/minecraft/ItemType.java
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@ -16,7 +16,7 @@ public class ItemType extends BaseItemType {
return null;
} else {
Item item = new Item();
item.setId(id);
item.setIdentifier(id);
item.setAmount(buffer.readByte());
item.setData(buffer.readShort());
item.setTag(Type.NBT.read(buffer));
@ -29,7 +29,7 @@ public class ItemType extends BaseItemType {
if (object == null) {
buffer.writeShort(-1);
} else {
buffer.writeShort(object.getId());
buffer.writeShort(object.getIdentifier());
buffer.writeByte(object.getAmount());
buffer.writeShort(object.getData());
Type.NBT.write(buffer, object.getTag());

2
common/src/main/java/us/myles/ViaVersion/protocols/protocol1_11to1_10/EntityIdRewriter.java
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@ -127,7 +127,7 @@ public class EntityIdRewriter {
}
private static boolean hasEntityTag(Item item) {
if (item != null && item.getId() == 383) { // Monster Egg
if (item != null && item.getIdentifier() == 383) { // Monster Egg
CompoundTag tag = item.getTag();
if (tag != null && tag.contains("EntityTag") && tag.get("EntityTag") instanceof CompoundTag) {
if (((CompoundTag) tag.get("EntityTag")).get("id") instanceof StringTag) {

4
common/src/main/java/us/myles/ViaVersion/protocols/protocol1_12to1_11_1/BedRewriter.java
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@ -6,14 +6,14 @@ public class BedRewriter {
public static void toClientItem(Item item) {
if (item == null) return;
if (item.getId() == 355 && item.getData() == 0) {
if (item.getIdentifier() == 355 && item.getData() == 0) {
item.setData((short) 14);
}
}
public static void toServerItem(Item item) {
if (item == null) return;
if (item.getId() == 355 && item.getData() == 14) {
if (item.getIdentifier() == 355 && item.getData() == 14) {
item.setData((short) 0);
}
}

4
common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13_1to1_13/packets/InventoryPackets.java
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@ -202,7 +202,7 @@ public class InventoryPackets {
public static void toClient(Item item) {
if (item == null) return;
item.setId((short) getNewItemId(item.getId()));
item.setIdentifier(getNewItemId(item.getIdentifier()));
}
public static int getNewItemId(int itemId) {
@ -214,7 +214,7 @@ public class InventoryPackets {
public static void toServer(Item item) {
if (item == null) return;
item.setId((short) getOldItemId(item.getId()));
item.setIdentifier(getOldItemId(item.getIdentifier()));
}
public static int getOldItemId(int newId) {

32
common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/packets/InventoryPackets.java
View File

@ -285,16 +285,16 @@ public class InventoryPackets {
CompoundTag tag = item.getTag();
// Save original id
int originalId = (item.getId() << 16 | item.getData() & 0xFFFF);
int originalId = (item.getIdentifier() << 16 | item.getData() & 0xFFFF);
int rawId = (item.getId() << 4 | item.getData() & 0xF);
int rawId = (item.getIdentifier() << 4 | item.getData() & 0xF);
// NBT Additions
if (isDamageable(item.getId())) {
if (isDamageable(item.getIdentifier())) {
if (tag == null) item.setTag(tag = new CompoundTag("tag"));
tag.put(new IntTag("Damage", item.getData()));
}
if (item.getId() == 358) { // map
if (item.getIdentifier() == 358) { // map
if (tag == null) item.setTag(tag = new CompoundTag("tag"));
tag.put(new IntTag("map", item.getData()));
}
@ -302,7 +302,7 @@ public class InventoryPackets {
// NBT Changes
if (tag != null) {
// Invert shield color id
if (item.getId() == 442 || item.getId() == 425) {
if (item.getIdentifier() == 442 || item.getIdentifier() == 425) {
if (tag.get("BlockEntityTag") instanceof CompoundTag) {
CompoundTag blockEntityTag = tag.get("BlockEntityTag");
if (blockEntityTag.get("Base") instanceof IntTag) {
@ -374,7 +374,7 @@ public class InventoryPackets {
tag.put(newStoredEnch);
}
// Handle SpawnEggs
if (item.getId() == 383) {
if (item.getIdentifier() == 383) {
if (tag.get("EntityTag") instanceof CompoundTag) {
CompoundTag entityTag = tag.get("EntityTag");
if (entityTag.get("id") instanceof StringTag) {
@ -402,23 +402,23 @@ public class InventoryPackets {
}
if (!MappingData.oldToNewItems.containsKey(rawId)) {
if (!isDamageable(item.getId()) && item.getId() != 358) { // Map
if (!isDamageable(item.getIdentifier()) && item.getIdentifier() != 358) { // Map
if (tag == null) item.setTag(tag = new CompoundTag("tag"));
tag.put(new IntTag(NBT_TAG_NAME, originalId)); // Data will be lost, saving original id
}
if (item.getId() == 31 && item.getData() == 0) { // Shrub was removed
if (item.getIdentifier() == 31 && item.getData() == 0) { // Shrub was removed
rawId = 32 << 4; // Dead Bush
} else if (MappingData.oldToNewItems.containsKey(rawId & ~0xF)) {
rawId &= ~0xF; // Remove data
} else {
if (!Via.getConfig().isSuppress1_13ConversionErrors() || Via.getManager().isDebug()) {
Via.getPlatform().getLogger().warning("Failed to get 1.13 item for " + item.getId());
Via.getPlatform().getLogger().warning("Failed to get 1.13 item for " + item.getIdentifier());
}
rawId = 16; // Stone
}
}
item.setId(MappingData.oldToNewItems.get(rawId).shortValue());
item.setIdentifier(MappingData.oldToNewItems.get(rawId).shortValue());
item.setData((short) 0);
}
@ -474,7 +474,7 @@ public class InventoryPackets {
}
if (rawId == null) {
Integer oldId = MappingData.oldToNewItems.inverse().get((int) item.getId());
Integer oldId = MappingData.oldToNewItems.inverse().get(item.getIdentifier());
if (oldId != null) {
// Handle spawn eggs
Optional<String> eggEntityId = SpawnEggRewriter.getEntityId(oldId);
@ -495,17 +495,17 @@ public class InventoryPackets {
if (rawId == null) {
if (!Via.getConfig().isSuppress1_13ConversionErrors() || Via.getManager().isDebug()) {
Via.getPlatform().getLogger().warning("Failed to get 1.12 item for " + item.getId());
Via.getPlatform().getLogger().warning("Failed to get 1.12 item for " + item.getIdentifier());
}
rawId = 0x10000; // Stone
}
item.setId((short) (rawId >> 16));
item.setIdentifier((short) (rawId >> 16));
item.setData((short) (rawId & 0xFFFF));
// NBT changes
if (tag != null) {
if (isDamageable(item.getId())) {
if (isDamageable(item.getIdentifier())) {
if (tag.get("Damage") instanceof IntTag) {
if (!gotRawIdFromTag)
item.setData((short) (int) tag.get("Damage").getValue());
@ -513,7 +513,7 @@ public class InventoryPackets {
}
}
if (item.getId() == 358) { // map
if (item.getIdentifier() == 358) { // map
if (tag.get("map") instanceof IntTag) {
if (!gotRawIdFromTag)
item.setData((short) (int) tag.get("map").getValue());
@ -521,7 +521,7 @@ public class InventoryPackets {
}
}
if (item.getId() == 442 || item.getId() == 425) { // shield / banner
if (item.getIdentifier() == 442 || item.getIdentifier() == 425) { // shield / banner
if (tag.get("BlockEntityTag") instanceof CompoundTag) {
CompoundTag blockEntityTag = tag.get("BlockEntityTag");
if (blockEntityTag.get("Base") instanceof IntTag) {

4
common/src/main/java/us/myles/ViaVersion/protocols/protocol1_14to1_13_2/packets/InventoryPackets.java
View File

@ -197,7 +197,7 @@ public class InventoryPackets {
public static void toClient(Item item) {
if (item == null) return;
item.setId((short) getNewItemId(item.getId()));
item.setIdentifier(getNewItemId(item.getIdentifier()));
}
public static int getNewItemId(int id) {
@ -215,7 +215,7 @@ public class InventoryPackets {
public static void toServer(Item item) {
if (item == null) return;
item.setId((short) getOldItemId(item.getId()));
item.setIdentifier(getOldItemId(item.getIdentifier()));
}
public static int getOldItemId(int id) {

18
common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9to1_8/ItemRewriter.java
View File

@ -139,7 +139,7 @@ public class ItemRewriter {
public static void toServer(Item item) {
if (item != null) {
if (item.getId() == 383 && item.getData() == 0) { // Monster Egg
if (item.getIdentifier() == 383 && item.getData() == 0) { // Monster Egg
CompoundTag tag = item.getTag();
int data = 0;
if (tag != null && tag.get("EntityTag") instanceof CompoundTag) {
@ -154,7 +154,7 @@ public class ItemRewriter {
item.setTag(tag);
item.setData((short) data);
}
if (item.getId() == 373) { // Potion
if (item.getIdentifier() == 373) { // Potion
CompoundTag tag = item.getTag();
int data = 0;
if (tag != null && tag.get("Potion") instanceof StringTag) {
@ -169,10 +169,10 @@ public class ItemRewriter {
item.setData((short) data);
}
// Splash potion
if (item.getId() == 438) {
if (item.getIdentifier() == 438) {
CompoundTag tag = item.getTag();
int data = 0;
item.setId((short) 373); // Potion
item.setIdentifier(373); // Potion
if (tag != null && tag.get("Potion") instanceof StringTag) {
StringTag potion = tag.get("Potion");
String potionName = potion.getValue().replace("minecraft:", "");
@ -188,7 +188,7 @@ public class ItemRewriter {
}
public static void rewriteBookToServer(Item item) {
short id = item.getId();
int id = item.getIdentifier();
if (id != 387) {
return;
}
@ -224,7 +224,7 @@ public class ItemRewriter {
public static void toClient(Item item) {
if (item != null) {
if (item.getId() == 383 && item.getData() != 0) { // Monster Egg
if (item.getIdentifier() == 383 && item.getData() != 0) { // Monster Egg
CompoundTag tag = item.getTag();
if (tag == null) {
tag = new CompoundTag("tag");
@ -239,13 +239,13 @@ public class ItemRewriter {
item.setTag(tag);
item.setData((short) 0);
}
if (item.getId() == 373) { // Potion
if (item.getIdentifier() == 373) { // Potion
CompoundTag tag = item.getTag();
if (tag == null) {
tag = new CompoundTag("tag");
}
if (item.getData() >= 16384) {
item.setId((short) 438); // splash id
item.setIdentifier(438); // splash id
item.setData((short) (item.getData() - 8192));
}
String name = potionNameFromDamage(item.getData());
@ -254,7 +254,7 @@ public class ItemRewriter {
item.setTag(tag);
item.setData((short) 0);
}
if (item.getId() == 387) { // WRITTEN_BOOK
if (item.getIdentifier() == 387) { // WRITTEN_BOOK
CompoundTag tag = item.getTag();
if (tag == null) {
tag = new CompoundTag("tag");

2
common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9to1_8/packets/EntityPackets.java
View File

@ -162,7 +162,7 @@ public class EntityPackets {
Item stack = wrapper.get(Type.ITEM, 0);
if (stack != null) {
if (Protocol1_9TO1_8.isSword(stack.getId())) {
if (Protocol1_9TO1_8.isSword(stack.getIdentifier())) {
entityTracker.getValidBlocking().add(entityID);
return;
}

2
common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9to1_8/packets/PlayerPackets.java
View File

@ -501,7 +501,7 @@ public class PlayerPackets {
if (name.equalsIgnoreCase("MC|BSign")) {
Item item = wrapper.passthrough(Type.ITEM);
if (item != null) {
item.setId((short) 387); // Written Book
item.setIdentifier(387); // Written Book
ItemRewriter.rewriteBookToServer(item);
}
}

2
common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9to1_8/packets/WorldPackets.java
View File

@ -308,7 +308,7 @@ public class WorldPackets {
if (Via.getConfig().isShieldBlocking()) {
EntityTracker tracker = wrapper.user().get(EntityTracker.class);
if (item != null && Protocol1_9TO1_8.isSword(item.getId())) {
if (item != null && Protocol1_9TO1_8.isSword(item.getIdentifier())) {
if (hand == 0) {
if (!tracker.isBlocking()) {
tracker.setBlocking(true);

84
common/src/test/java/us/myles/ViaVersion/common/test/type/ItemTypeTest.java Normal file
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@ -0,0 +1,84 @@
package us.myles.ViaVersion.common.test.type;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
import us.myles.ViaVersion.api.minecraft.item.Item;
import us.myles.ViaVersion.api.type.Type;
public class ItemTypeTest {
@Test
public void test() throws Exception {
ByteBuf buf = Unpooled.buffer();
// Test empty item read
Assertions.assertNull(Type.ITEM.read(Unpooled.wrappedBuffer(new byte[]{-1, -1})));
Assertions.assertNull(Type.FLAT_ITEM.read(Unpooled.wrappedBuffer(new byte[]{-1, -1})));
Assertions.assertNull(Type.FLAT_VAR_INT_ITEM.read(Unpooled.wrappedBuffer(new byte[]{0})));
// Test item read
Assertions.assertEquals(
new Item((int) Short.MAX_VALUE, (byte) -128, (short) 257, null),
Type.ITEM.read(Unpooled.wrappedBuffer(new byte[]{
127, -1,
-128,
1, 1,
0
}))
);
Assertions.assertEquals(
new Item(420, (byte) 53, (short) 0, null),
Type.FLAT_ITEM.read(Unpooled.wrappedBuffer(new byte[]{
1, (byte) 164,
53,
0
}))
);
Assertions.assertEquals(
new Item(268435456, (byte) 127, (short) 0, null),
Type.FLAT_VAR_INT_ITEM.read(Unpooled.wrappedBuffer(new byte[]{
1,
-128, -128, -128, -128, 1,
127,
0
}))
);
// Test item empty write
Type.ITEM.write(buf, null);
Assertions.assertArrayEquals(toBytes(buf), new byte[]{-1, -1});
Type.FLAT_ITEM.write(buf, null);
Assertions.assertArrayEquals(toBytes(buf), new byte[]{-1, -1});
Type.FLAT_VAR_INT_ITEM.write(buf, null);
Assertions.assertArrayEquals(toBytes(buf), new byte[]{0});
// Test item write
Type.ITEM.write(buf, new Item((int) Short.MAX_VALUE, (byte) -128, (short) 257, null));
Assertions.assertArrayEquals(toBytes(buf), new byte[]{
127, -1,
-128,
1, 1,
0
});
Type.FLAT_ITEM.write(buf, new Item(420, (byte) 53, (short) 0, null));
Assertions.assertArrayEquals(toBytes(buf), new byte[]{
1, (byte) 164,
53,
0
});
Type.FLAT_VAR_INT_ITEM.write(buf, new Item(268435456, (byte) 127, (short) 0, null));
Assertions.assertArrayEquals(toBytes(buf), new byte[]{
1,
-128, -128, -128, -128, 1,
127,
0
});
}
private byte[] toBytes(ByteBuf byteBuf) {
byte[] bytes = new byte[byteBuf.readableBytes()];
byteBuf.readBytes(bytes);
return bytes;
}
}

57
common/src/test/java/us/myles/ViaVersion/common/test/type/StringTypeTest.java Normal file
View File

@ -0,0 +1,57 @@
package us.myles.ViaVersion.common.test.type;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufUtil;
import io.netty.buffer.Unpooled;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.function.Executable;
import us.myles.ViaVersion.api.type.Type;
public class StringTypeTest {
@Test
public void test() throws Exception {
// Write
final ByteBuf buf = Unpooled.buffer();
Type.STRING.write(buf, "\uD83E\uDDFD"); // Sponge Emoji
Assertions.assertEquals(ByteBufUtil.hexDump(buf), "04f09fa7bd");
buf.clear();
// Read Write
Type.STRING.write(buf, new String(new char[Short.MAX_VALUE]));
Assertions.assertEquals(Type.STRING.read(buf), new String(new char[Short.MAX_VALUE]));
Type.STRING.write(buf, new String(new char[Short.MAX_VALUE]).replace("\0", "ç"));
Assertions.assertEquals(Type.STRING.read(buf), new String(new char[Short.MAX_VALUE]).replace("\0", "ç"));
Type.STRING.write(buf, new String(new char[Short.MAX_VALUE / 2]).replace("\0", "\uD83E\uDDFD"));
Assertions.assertEquals(Type.STRING.read(buf), new String(new char[Short.MAX_VALUE / 2]).replace("\0", "\uD83E\uDDFD"));
// Read exception
Type.VAR_INT.write(buf, (Short.MAX_VALUE + 1) * 4);
for (int i = 0; i < Short.MAX_VALUE / 2 + 1; i++) {
buf.writeBytes(new byte[]{0x04, (byte) 0xf0, (byte) 0x9f, (byte) 0xa7, (byte) 0xbd}); // Sponge emoji
}
Assertions.assertThrows(IllegalArgumentException.class, new Executable() {
@Override
public void execute() throws Throwable {
Type.STRING.read(buf);
}
});
// Write exceptions
Assertions.assertThrows(IllegalArgumentException.class, new Executable() {
@Override
public void execute() throws Throwable {
Type.STRING.write(buf, new String(new char[Short.MAX_VALUE / 2 + 1]).replace("\0", "\uD83E\uDDFD"));
}
});
Assertions.assertThrows(IllegalArgumentException.class, new Executable() {
@Override
public void execute() throws Throwable {
Type.STRING.write(buf, new String(new char[Short.MAX_VALUE + 1]));
}
});
}
}

8
pom.xml
View File

@ -117,6 +117,14 @@
<version>17.0</version>
<scope>provided</scope>
</dependency>
<!-- JUnit -->
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<version>5.3.1</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>