From 5d2669dbd35b9449cbbb249dcec89e2a64c90f30 Mon Sep 17 00:00:00 2001
From: obscuren <geffobscura@gmail.com>
Date: Mon, 21 Jul 2014 12:21:34 +0200
Subject: [PATCH] Fixed tx sha creation

---
 ethchain/block.go         | 33 ++++++++++++++++++++++++++++-----
 ethchain/state_manager.go | 17 ++++++-----------
 ethminer/miner.go         |  1 +
 3 files changed, 35 insertions(+), 16 deletions(-)

diff --git a/ethchain/block.go b/ethchain/block.go
index a0f9ecd86..447d55f99 100644
--- a/ethchain/block.go
+++ b/ethchain/block.go
@@ -7,7 +7,7 @@ import (
 	"github.com/ethereum/eth-go/ethtrie"
 	"github.com/ethereum/eth-go/ethutil"
 	"math/big"
-	"strconv"
+	_ "strconv"
 	"time"
 )
 
@@ -252,20 +252,43 @@ func (self *Block) SetReceipts(receipts []*Receipt, txs []*Transaction) {
 func (block *Block) setTransactions(txs []*Transaction) {
 	block.transactions = txs
 
+	/*
+		trie := ethtrie.NewTrie(ethutil.Config.Db, "")
+		for i, tx := range txs {
+			trie.Update(strconv.Itoa(i), string(tx.RlpEncode()))
+		}
+
+		switch trie.Root.(type) {
+		case string:
+			block.TxSha = []byte(trie.Root.(string))
+		case []byte:
+			block.TxSha = trie.Root.([]byte)
+		default:
+			panic(fmt.Sprintf("invalid root type %T", trie.Root))
+		}
+	*/
+}
+
+func CreateTxSha(receipts Receipts) (sha []byte) {
 	trie := ethtrie.NewTrie(ethutil.Config.Db, "")
-	for i, tx := range txs {
-		trie.Update(strconv.Itoa(i), string(tx.RlpEncode()))
+	for i, receipt := range receipts {
+		trie.Update(string(ethutil.NewValue(i).Encode()), string(ethutil.NewValue(receipt.RlpData()).Encode()))
 	}
 
 	switch trie.Root.(type) {
 	case string:
-		block.TxSha = []byte(trie.Root.(string))
+		sha = []byte(trie.Root.(string))
 	case []byte:
-		block.TxSha = trie.Root.([]byte)
+		sha = trie.Root.([]byte)
 	default:
 		panic(fmt.Sprintf("invalid root type %T", trie.Root))
 	}
 
+	return sha
+}
+
+func (self *Block) SetTxHash(receipts Receipts) {
+	self.TxSha = CreateTxSha(receipts)
 }
 
 func (block *Block) Value() *ethutil.Value {
diff --git a/ethchain/state_manager.go b/ethchain/state_manager.go
index f28f45eab..6a6c67492 100644
--- a/ethchain/state_manager.go
+++ b/ethchain/state_manager.go
@@ -201,11 +201,16 @@ func (sm *StateManager) Process(block *Block, dontReact bool) (err error) {
 		fmt.Printf("## %x %x ##\n", block.Hash(), block.Number)
 	}
 
-	_, err = sm.ApplyDiff(state, parent, block)
+	receipts, err := sm.ApplyDiff(state, parent, block)
 	if err != nil {
 		return err
 	}
 
+	txSha := CreateTxSha(receipts)
+	if bytes.Compare(txSha, block.TxSha) != 0 {
+		return fmt.Errorf("Error validating tx sha. Received %x, got %x", block.TxSha, txSha)
+	}
+
 	// Block validation
 	if err = sm.ValidateBlock(block); err != nil {
 		statelogger.Errorln("Error validating block:", err)
@@ -219,17 +224,7 @@ func (sm *StateManager) Process(block *Block, dontReact bool) (err error) {
 		return err
 	}
 
-	/*
-		if ethutil.Config.Paranoia {
-			valid, _ := ethtrie.ParanoiaCheck(state.trie)
-			if !valid {
-				err = fmt.Errorf("PARANOIA: World state trie corruption")
-			}
-		}
-	*/
-
 	if !block.State().Cmp(state) {
-
 		err = fmt.Errorf("Invalid merkle root.\nrec: %x\nis:  %x", block.State().trie.Root, state.trie.Root)
 		return
 	}
diff --git a/ethminer/miner.go b/ethminer/miner.go
index a50b3712f..bfea8e580 100644
--- a/ethminer/miner.go
+++ b/ethminer/miner.go
@@ -165,6 +165,7 @@ func (self *Miner) mineNewBlock() {
 		logger.Debugln(err)
 	}
 	self.txs = append(txs, unhandledTxs...)
+	self.block.SetTxHash(receipts)
 
 	// Set the transactions to the block so the new SHA3 can be calculated
 	self.block.SetReceipts(receipts, txs)