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Prevent NPEs in /powertool (#4276)

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This PR fixes a long-standing bug where using the `a:` or `r:` modes in `/powertool` with no commands already set on the item would result in an NPE. To prevent this, the powertool command list is now immediately initialized if it doesn't exist upon retrieval.
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triagonal 2021-06-27 06:11:03 +10:00 committed by GitHub
parent 64eb39a417
commit 3f36a52685
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 5 additions and 9 deletions
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14
Essentials/src/main/java/com/earth2me/essentials/commands/Commandpowertool.java
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@ -8,7 +8,6 @@ import org.bukkit.Material;
import org.bukkit.Server;
import org.bukkit.inventory.ItemStack;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Locale;
@ -52,10 +51,11 @@ public class Commandpowertool extends EssentialsCommand {
}
final String itemName = itemStack.getType().toString().toLowerCase(Locale.ENGLISH).replaceAll("_", " ");
List<String> powertools = user.getPowertool(itemStack);
final List<String> powertools = user.getPowertool(itemStack) != null ? user.getPowertool(itemStack) : Lists.newArrayList();
if (command != null && !command.isEmpty()) {
if (command.equalsIgnoreCase("l:")) {
if (powertools == null || powertools.isEmpty()) {
if (powertools.isEmpty()) {
throw new Exception(tl("powerToolListEmpty", itemName));
} else {
sender.sendMessage(tl("powerToolList", StringUtil.joinList(powertools), itemName));
@ -79,20 +79,16 @@ public class Commandpowertool extends EssentialsCommand {
if (powertools.contains(command)) {
throw new Exception(tl("powerToolAlreadySet", command, itemName));
}
} else if (powertools != null && !powertools.isEmpty()) {
} else if (!powertools.isEmpty()) {
// Replace all commands with this one
powertools.clear();
} else {
powertools = new ArrayList<>();
}
powertools.add(command);
sender.sendMessage(tl("powerToolAttach", StringUtil.joinList(powertools), itemName));
}
} else {
if (powertools != null) {
powertools.clear();
}
powertools.clear();
sender.sendMessage(tl("powerToolRemoveAll", itemName));
}