From 5dbeb4600637157b23cf426b95536599092e71f5 Mon Sep 17 00:00:00 2001
From: Everton Fraga <ev@ethereum.org>
Date: Thu, 9 Nov 2017 17:13:39 -0500
Subject: [PATCH] Overriding eth_getTransactionReceipt call

---
 .../ipc/methods/eth_getTransactionReceipt.js  | 60 +++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 modules/ipc/methods/eth_getTransactionReceipt.js

diff --git a/modules/ipc/methods/eth_getTransactionReceipt.js b/modules/ipc/methods/eth_getTransactionReceipt.js
new file mode 100644
index 000000000..46b4f8549
--- /dev/null
+++ b/modules/ipc/methods/eth_getTransactionReceipt.js
@@ -0,0 +1,60 @@
+const _ = global._;
+const BaseProcessor = require('./base');
+const eth = require('ethereumjs-util');
+
+/**
+ * Process method: eth_getTransactionReceipt
+ */
+
+module.exports = class extends BaseProcessor {
+
+    sanitizeRequestPayload(conn, payload, isPartOfABatch) {
+        return super.sanitizeRequestPayload(conn, payload, isPartOfABatch);
+    }
+
+    async exec(conn, payload) {
+        const txHash = payload.params[0];
+
+        // Sends regular eth_getTransactionReceipt request
+        const ret = await conn.socket.send(payload, {
+            fullResult: true
+        });
+
+        // If that contains a contractAddress already, fine.
+        if (ret.result.result.contractAddress != null) {
+            return ret.result;
+        }
+
+        // Due to a geth's light client v1 bug, it does not return
+        // contractAddress value on the receipts. Let's fix that.
+        // 1. GET TRANSACTION from AND nonce VALUES
+        const transactionInfo = await conn.socket.send({
+            jsonrpc: '2.0',
+            id: _.uuid(),
+            method: 'eth_getTransactionByHash',
+            params: [txHash]
+        }, { fullResult: true });
+
+
+        const fromAddress = transactionInfo.result.result.from;
+        const nonce = parseInt(transactionInfo.result.result.nonce, 16);
+        const possibleContractAddress = `0x${eth.generateAddress(fromAddress, nonce).toString('hex')}`;
+
+
+        // 2. GET CODE FROM ADDRESS
+        const contractCode = await conn.socket.send({
+            jsonrpc: '2.0',
+            id: _.uuid(),
+            method: 'eth_getCode',
+            params: [possibleContractAddress, 'latest']
+        }, { fullResult: true });
+        const contractCodeResult = contractCode.result.result;
+
+        // 3. IF IT EXISTS, ASSIGN TO RETURN VALUE
+        if (contractCodeResult && contractCodeResult.length > 2) {
+            ret.result.result.contractAddress = possibleContractAddress;
+        }
+
+        return ret.result;
+    }
+};