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Limit the cause chain to 40 items.

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This commit is contained in:
sk89q 2015-01-19 14:08:53 -08:00
parent 73dea11de2
commit 2a2b2f6f64
1 changed files with 11 additions and 0 deletions
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11
src/main/java/com/sk89q/worldguard/bukkit/cause/Cause.java
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@ -35,6 +35,8 @@
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import static com.google.common.base.Preconditions.checkNotNull;
@ -49,8 +51,10 @@
*/
public class Cause {
private static final Logger log = Logger.getLogger(Cause.class.getCanonicalName());
private static final String CAUSE_KEY = "worldguard.cause";
private static final Cause UNKNOWN = new Cause(Collections.emptyList());
private static final int MAX_CAUSE_LENGTH = 40;
private final List<Object> causes;
@ -162,6 +166,13 @@ public String toString() {
* @param element an array of objects
*/
private static void expand(List<Object> list, @Nullable Object ... element) {
if (list.size() >= MAX_CAUSE_LENGTH) {
log.log(Level.WARNING, "While discovering the true cause of an event, the chain of " +
"causes exceeded the limit (" + MAX_CAUSE_LENGTH + "). This could be " +
"caused by a circular cause (arrow's shooter = arrow).", new RuntimeException());
return;
}
if (element != null) {
for (Object o : element) {
if (o == null) {