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NetDB: Prevent ClassCastException in HFDSMJ on hash collision

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zzz
2026-08-01 15:24:01 -04:00
parent e01d4398df
commit 791d4e2c63
1 changed files with 9 additions and 1 deletions
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router/java/src/net/i2p/router/networkdb/kademlia/HandleFloodfillDatabaseStoreMessageJob.java
+9 -1
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@@ -249,7 +249,15 @@ class HandleFloodfillDatabaseStoreMessageJob extends JobImpl {
boolean shouldStore = true;
if (ri.getReceivedAsPublished()) {
// these are often just dup stores from concurrent lookups
prevNetDb = (RouterInfo) _facade.lookupLocallyWithoutValidation(key);
DatabaseEntry dbe = _facade.lookupLocallyWithoutValidation(key);
if (dbe != null) {
if (dbe.getType() != DatabaseEntry.KEY_TYPE_ROUTERINFO) {
// hash collision
// prevent ClassCastException here
throw new IllegalArgumentException("Attempt to replace LS with " + ri);
}
prevNetDb = (RouterInfo) dbe;
}
if (prevNetDb == null) {
// actually new
int count = _facade.getDataStore().size();