From e92e0a3959d22e0f7bbad589feb6370bae8a1f8c Mon Sep 17 00:00:00 2001
From: Jaynti Kanani <jdkanani@gmail.com>
Date: Fri, 4 Oct 2019 00:38:25 +0530
Subject: [PATCH] add tranfer log
---
core/evm.go | 42 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 42 insertions(+)
diff --git a/core/evm.go b/core/evm.go
index b654bbd47..fc68b4557 100644
--- a/core/evm.go
+++ b/core/evm.go
@@ -92,6 +92,48 @@ func CanTransfer(db vm.StateDB, addr common.Address, amount *big.Int) bool {
// Transfer subtracts amount from sender and adds amount to recipient using the given Db
func Transfer(db vm.StateDB, sender, recipient common.Address, amount *big.Int) {
+ // get inputs before
+ input1 := db.GetBalance(sender)
+ input2 := db.GetBalance(recipient)
+
db.SubBalance(sender, amount)
db.AddBalance(recipient, amount)
+
+ // get outputs after
+ output1 := db.GetBalance(sender)
+ output2 := db.GetBalance(recipient)
+
+ // add tranfer
+ db.AddLog(&types.Log{
+ Address: common.HexToAddress("0x0000000000000000000000000000000000001010"),
+ Topics: []common.Hash{
+ common.HexToHash("0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"),
+ sender.Hash(),
+ recipient.Hash(),
+ },
+ Data: common.BytesToHash(amount.Bytes()).Bytes(),
+ })
+
+ dataInputs := []*big.Int{
+ amount,
+ input1,
+ input2,
+ output1,
+ output2,
+ }
+ var data []byte
+ for _, v := range dataInputs {
+ data = append(data, common.LeftPadBytes(v.Bytes(), 32)...)
+ }
+
+ // add transfer log
+ db.AddLog(&types.Log{
+ Address: common.HexToAddress("0x0000000000000000000000000000000000001010"),
+ Topics: []common.Hash{
+ common.HexToHash("0xe6497e3ee548a3372136af2fcb0696db31fc6cf20260707645068bd3fe97f3c4"),
+ sender.Hash(),
+ recipient.Hash(),
+ },
+ Data: data,
+ })
}
--
GitLab