Fixed contract events (#404).

ethers-io · May 23, 2019 · 8cdda37 · 8cdda37
1 parent 03c9725
commit 8cdda37
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Showing 6 changed files with 263 additions and 144 deletions.
diff --git a/packages/abi/src.ts/interface.ts b/packages/abi/src.ts/interface.ts
@@ -290,7 +290,13 @@ export class Interface {
             eventFragment = this.getEvent(eventFragment);
         }
 
-        if (topics != null && !eventFragment.anonymous) { topics = topics.slice(1); }
+        if (topics != null && !eventFragment.anonymous) {
+            let topicHash = this.getEventTopic(eventFragment);
+            if (!isHexString(topics[0], 32) || topics[0].toLowerCase() !== topicHash) {
+                errors.throwError("fragment/topic mismatch", errors.INVALID_ARGUMENT, { argument: "topics[0]", expected: topicHash, value: topics[0] });
+            }
+            topics = topics.slice(1);
+        }
 
         let indexed: Array<ParamType> = [];
         let nonIndexed: Array<ParamType> = [];