Repo-Mirror/AkarinMC
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Update PlayerConnection.java

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FatSaw
2023-02-18 02:43:14 +02:00
parent 0e9940771e
commit a15099f9e8
1 changed files with 69 additions and 6 deletions
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71
sources/src/main/java/net/minecraft/server/PlayerConnection.java
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@@ -355,6 +355,13 @@ public class PlayerConnection implements PacketListenerPlayIn, ITickable {
}
speed *= 2f; // TODO: Get the speed of the vehicle instead of the player
// Paper start - Prevent moving into unloaded chunks
if (player.world.paperConfig.preventMovingIntoUnloadedChunks && !worldserver.isChunkLoaded((int) Math.floor(packetplayinvehiclemove.getX()) >> 4, (int) Math.floor(packetplayinvehiclemove.getZ()) >> 4, false)) {
this.networkManager.sendPacket(new PacketPlayOutVehicleMove(entity));
return;
}
// Paper end
if (d10 - d9 > Math.max(100.0D, Math.pow((double) (org.spigotmc.SpigotConfig.movedTooQuicklyMultiplier * (float) i * speed), 2)) && (!this.minecraftServer.R() || !this.minecraftServer.Q().equals(entity.getName()))) { // Spigot
// CraftBukkit end
PlayerConnection.LOGGER.warn("{} (vehicle of {}) moved too quickly! {},{},{}", entity.getName(), this.player.getName(), Double.valueOf(d6), Double.valueOf(d7), Double.valueOf(d8));
@@ -552,9 +559,9 @@ public class PlayerConnection implements PacketListenerPlayIn, ITickable {
double d1 = this.player.locY;
double d2 = this.player.locZ;
double d3 = this.player.locY;
double d4 = packetplayinflying.a(this.player.locX);
double d4 = packetplayinflying.a(this.player.locX); double toX = d4; // Paper - OBFHELPER
double d5 = packetplayinflying.b(this.player.locY);
double d6 = packetplayinflying.c(this.player.locZ);
double d6 = packetplayinflying.c(this.player.locZ); double toZ = d6; // Paper - OBFHELPER
float f = packetplayinflying.a(this.player.yaw);
float f1 = packetplayinflying.b(this.player.pitch);
double d7 = d4 - this.l;
@@ -594,6 +601,13 @@ public class PlayerConnection implements PacketListenerPlayIn, ITickable {
speed = player.abilities.walkSpeed * 10f;
}
// Paper start - Prevent moving into unloaded chunks
if (player.world.paperConfig.preventMovingIntoUnloadedChunks && (this.player.locX != toX || this.player.locZ != toZ) && !worldserver.isChunkLoaded((int) Math.floor(toX) >> 4, (int) Math.floor(toZ) >> 4, false)) {
this.internalTeleport(this.player.locX, this.player.locY, this.player.locZ, this.player.yaw, this.player.pitch, Collections.emptySet());
return;
}
// Paper end
if (!this.player.L() && (!this.player.x().getGameRules().getBoolean("disableElytraMovementCheck") || !this.player.cP())) {
float f2 = this.player.cP() ? 300.0F : 100.0F;
@@ -1695,7 +1709,7 @@ public class PlayerConnection implements PacketListenerPlayIn, ITickable {
if (event.isCancelled() || this.player.inventory.getItemInHand() == null || this.player.inventory.getItemInHand().getItem() != origItem) {
// Refresh the current entity metadata
this.sendPacket(new PacketPlayOutEntityMetadata(entity.getId(), entity.datawatcher, true));
entity.tracker.broadcast(new PacketPlayOutEntityMetadata(entity.getId(), entity.datawatcher, true)); // Paper - update entity for all players
}
if (event.isCancelled()) {
@@ -2232,7 +2246,7 @@ public class PlayerConnection implements PacketListenerPlayIn, ITickable {
TileEntitySign tileentitysign = (TileEntitySign) tileentity;
if (!tileentitysign.a() || tileentitysign.e() != this.player) {
if (!tileentitysign.a() || tileentitysign.signEditor == null || !tileentitysign.signEditor.equals(this.player.getUniqueID())) { // Paper
this.minecraftServer.warning("Player " + this.player.getName() + " just tried to change non-editable sign");
this.sendPacket(tileentity.getUpdatePacket()); // CraftBukkit
return;
@@ -2248,6 +2262,14 @@ public class PlayerConnection implements PacketListenerPlayIn, ITickable {
String[] lines = new String[4];
for (int i = 0; i < astring.length; ++i) {
// Paper start - cap line length - modified clients can send longer data than normal
if (astring[i].length() > TileEntitySign.MAX_SIGN_LINE_LENGTH && TileEntitySign.MAX_SIGN_LINE_LENGTH > 0) {
int offset = astring[i].codePoints().limit(TileEntitySign.MAX_SIGN_LINE_LENGTH).map(Character::charCount).sum();
if (offset > astring.length) {
astring[i] = astring[i].substring(0, offset);
}
}
// Paper end
lines[i] = SharedConstants.a(astring[i]); //Paper - Replaced with anvil color stripping method to stop exploits that allow colored signs to be created.
}
SignChangeEvent event = new SignChangeEvent((org.bukkit.craftbukkit.block.CraftBlock) player.getWorld().getBlockAt(x, y, z), this.server.getPlayer(this.player), lines);
@@ -2350,6 +2372,45 @@ public class PlayerConnection implements PacketListenerPlayIn, ITickable {
this.player.a(packetplayinsettings);
}
// Paper start
private boolean validateBook(ItemStack testStack) {
NBTTagList pageList = testStack.getTag().getList("pages", 8);
long byteTotal = 0;
int maxBookPageSize = com.destroystokyo.paper.PaperConfig.maxBookPageSize;
double multiplier = Math.max(0.3D, Math.min(1D, com.destroystokyo.paper.PaperConfig.maxBookTotalSizeMultiplier));
long byteAllowed = maxBookPageSize;
for (int i = 0; i < pageList.size(); ++i) {
String testString = pageList.getString(i);
int byteLength = testString.getBytes(java.nio.charset.StandardCharsets.UTF_8).length;
byteTotal += byteLength;
int length = testString.length();
int multibytes = 0;
if (length != byteLength) {
for (char c : testString.toCharArray()) {
if (c > 127) {
multibytes++;
}
}
}
byteAllowed += (maxBookPageSize * Math.min(1, Math.max(0.1D, (double) length / 255D))) * multiplier;
if (multibytes > 1) {
// penalize MB
byteAllowed -= multibytes;
}
}
if (byteTotal > byteAllowed) {
PlayerConnection.LOGGER.warn(this.player.getName() + " tried to send too large of a book. Book Size: " + byteTotal + " - Allowed: "+ byteAllowed + " - Pages: " + pageList.size());
minecraftServer.postToMainThread(() -> this.disconnect("Book too large!"));
return false;
}
return true;
}
// Paper end
public void a(PacketPlayInCustomPayload packetplayincustompayload) {
PlayerConnectionUtils.ensureMainThread(packetplayincustompayload, this, this.player.x());
String s = packetplayincustompayload.a();
@@ -2383,6 +2444,7 @@ public class PlayerConnection implements PacketListenerPlayIn, ITickable {
}
if (itemstack.getItem() == Items.WRITABLE_BOOK && itemstack.getItem() == itemstack1.getItem()) {
if (!validateBook(itemstack)) return; // Paper
itemstack1.a("pages", (NBTBase) itemstack.getTag().getList("pages", 8));
CraftEventFactory.handleEditBookEvent(player, itemstack1); // CraftBukkit
}
@@ -2418,6 +2480,7 @@ public class PlayerConnection implements PacketListenerPlayIn, ITickable {
}
if (itemstack.getItem() == Items.WRITABLE_BOOK && itemstack1.getItem() == Items.WRITABLE_BOOK) {
if (!validateBook(itemstack)) return; // Paper
ItemStack itemstack2 = new ItemStack(Items.WRITTEN_BOOK);
itemstack2.a("author", (NBTBase) (new NBTTagString(this.player.getName())));