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Merge pull request #2588 from Multiverse/world-name-check 

Implement new WorldNameChecker
This commit is contained in:
Ben Woo 2021-03-09 00:31:58 +08:00 committed by GitHub
parent 2593080f77 0d4595d511
commit 7c4ab035a0
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 166 additions and 41 deletions
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27
src/main/java/com/onarandombox/MultiverseCore/commands/ImportCommand.java
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@ -10,6 +10,7 @@ package com.onarandombox.MultiverseCore.commands;
import com.onarandombox.MultiverseCore.MultiverseCore;
import com.onarandombox.MultiverseCore.api.MVWorldManager;
import com.onarandombox.MultiverseCore.api.MultiverseWorld;
import com.onarandombox.MultiverseCore.utils.WorldNameChecker;
import com.pneumaticraft.commandhandler.CommandHandler;
import org.bukkit.ChatColor;
import org.bukkit.World.Environment;
@ -45,28 +46,6 @@ public class ImportCommand extends MultiverseCommand {
this.worldManager = this.plugin.getMVWorldManager();
}
/**
* A very basic check to see if a folder has a level.dat file.
* If it does, we can safely assume it's a world folder.
*
* @param worldFolder The File that may be a world.
* @return True if it looks like a world, false if not.
*/
private static boolean checkIfIsWorld(File worldFolder) {
if (worldFolder.isDirectory()) {
File[] files = worldFolder.listFiles(new FilenameFilter() {
@Override
public boolean accept(File file, String name) {
return name.toLowerCase().endsWith(".dat");
}
});
if (files != null && files.length > 0) {
return true;
}
}
return false;
}
private String getPotentialWorlds() {
File worldFolder = this.plugin.getServer().getWorldContainer();
if (worldFolder == null) {
@ -84,7 +63,7 @@ public class ImportCommand extends MultiverseCommand {
}
ChatColor currColor = ChatColor.WHITE;
for (File file : files) {
if (file.isDirectory() && checkIfIsWorld(file) && !worldStrings.contains(file.getName())) {
if (file.isDirectory() && WorldNameChecker.isValidWorldFolder(file) && !worldStrings.contains(file.getName())) {
worldList += currColor + file.getName() + " ";
if (currColor == ChatColor.WHITE) {
currColor = ChatColor.YELLOW;
@ -152,7 +131,7 @@ public class ImportCommand extends MultiverseCommand {
String worldList = this.getPotentialWorlds();
sender.sendMessage("That world folder does not exist. These look like worlds to me:");
sender.sendMessage(worldList);
} else if (!checkIfIsWorld(worldFile)) {
} else if (!WorldNameChecker.isValidWorldFolder(worldFile)) {
sender.sendMessage(ChatColor.RED + "FAILED.");
sender.sendMessage(String.format("'%s' does not appear to be a world. It is lacking a .dat file.",
worldName));

21
src/main/java/com/onarandombox/MultiverseCore/utils/WorldManager.java
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@ -130,7 +130,7 @@ public class WorldManager implements MVWorldManager {
}
// Check for valid world name
if (!(isValidWorldName(oldName) && isValidWorldName(newName))) {
if (!(WorldNameChecker.isValidWorldName(oldName) && WorldNameChecker.isValidWorldName(oldName))) {
return false;
}
@ -238,7 +238,9 @@ public class WorldManager implements MVWorldManager {
return false;
}
if (!isValidWorldName(name)) {
if (!WorldNameChecker.isValidWorldName(name)) {
Logging.warning("Invalid world name '" + name + "'");
Logging.warning("World name should not contain spaces or special characters!");
return false;
}
@ -424,21 +426,6 @@ public class WorldManager implements MVWorldManager {
}
}
/**
* Check if the world name is allowed
*
* @param name Name of the world
* @return True if the world world name is valid based on regex
*/
private boolean isValidWorldName(String name) {
if (!worldNamePattern.matcher(name).matches()) {
Logging.warning("Invalid world name '" + name + "'");
Logging.warning("World name should not contain spaces or special characters!");
return false;
}
return true;
}
private void brokenWorld(String name) {
Logging.severe("The world '" + name + "' could NOT be loaded because it contains errors and is probably corrupt!");
Logging.severe("Try using Minecraft Region Fixer to repair your world! '" + name + "'");

159
src/main/java/com/onarandombox/MultiverseCore/utils/WorldNameChecker.java Normal file
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@ -0,0 +1,159 @@
package com.onarandombox.MultiverseCore.utils;
import org.bukkit.Bukkit;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.io.File;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import java.util.regex.Pattern;
/**
* <p>Utility class in helping to check the status of a world name and it's associated world folder.</p>
*
* <p>Note this is for preliminary checks and better command output. A valid result will suggest but not
* 100% determine that a world name can be created, loaded or imported.</p>
*/
public class WorldNameChecker {
private static final Pattern WORLD_NAME_PATTERN = Pattern.compile("[a-zA-Z0-9/._-]+");
private static final Set<String> BLACKLIST_NAMES = Collections.unmodifiableSet(new HashSet<String>() {{
add("plugins");
add("logs");
add("cache");
add("crash-reports");
}});
/**
* Checks if a world name is valid.
*
* @param worldName The world name to check on.
* @return True if check result is valid, else false.
*/
public static boolean isValidWorldName(@Nullable String worldName) {
return checkName(worldName) == NameStatus.VALID;
}
/**
* Checks the current validity status of a world name.
*
* @param worldName The world name to check on.
* @return The resulting name status.
*/
@NotNull
public static NameStatus checkName(@Nullable String worldName) {
if (BLACKLIST_NAMES.contains(worldName)) {
return NameStatus.BLACKLISTED;
}
if (worldName == null || !WORLD_NAME_PATTERN.matcher(worldName).matches()) {
return NameStatus.INVALID_CHARS;
}
return NameStatus.VALID;
}
/**
* Checks if a world name has a valid world folder.
*
* @param worldName The world name to check on.
* @return True if check result is valid, else false.
*/
public static boolean isValidWorldFolder(@Nullable String worldName) {
return checkFolder(worldName) == FolderStatus.VALID;
}
/**
* Checks if a world folder is valid.
*
* @param worldFolder The world folder to check on.
* @return True if check result is valid, else false.
*/
public static boolean isValidWorldFolder(@Nullable File worldFolder) {
return checkFolder(worldFolder) == FolderStatus.VALID;
}
/**
* Checks the current folder status for a world name.
*
* @param worldName The world name to check on.
* @return The resulting folder status.
*/
@NotNull
public static FolderStatus checkFolder(@Nullable String worldName) {
if (worldName == null) {
return FolderStatus.DOES_NOT_EXIST;
}
File worldFolder = new File(Bukkit.getWorldContainer(), worldName);
return checkFolder(worldFolder);
}
/**
* Checks the current folder status.
*
* @param worldFolder The world folder to check on.
* @return The resulting folder status.
*/
@NotNull
public static FolderStatus checkFolder(@Nullable File worldFolder) {
if (worldFolder == null || !worldFolder.exists() || !worldFolder.isDirectory()) {
return FolderStatus.DOES_NOT_EXIST;
}
if (!folderHasDat(worldFolder)) {
return FolderStatus.NOT_A_WORLD;
}
return FolderStatus.VALID;
}
/**
* A very basic check to see if a folder has a level.dat file. If it does, we can safely assume
* it's a world folder.
*
* @param worldFolder The File that may be a world.
* @return True if it looks like a world, else false.
*/
private static boolean folderHasDat(@NotNull File worldFolder) {
File[] files = worldFolder.listFiles((file, name) -> name.toLowerCase().endsWith(".dat"));
return files != null && files.length > 0;
}
/**
* Result after checking validity of world name.
*/
public enum NameStatus {
/**
* Name is valid.
*/
VALID,
/**
* Name not valid as it contains invalid characters.
*/
INVALID_CHARS,
/**
* Name not valid as it is deemed blacklisted.
*/
BLACKLISTED
}
/**
* Result after checking validity of world folder.
*/
public enum FolderStatus {
/**
* Folder is valid.
*/
VALID,
/**
* Folder exist, but contents in it doesnt look like a world.
*/
NOT_A_WORLD,
/**
* Folder does not exist.
*/
DOES_NOT_EXIST
}
}