added find scripthashes

neoutils/smartcontract/const.go

@@ -9,6 +9,8 @@ type NetworkFeeAmount float64
 
 type Operation string
 
+const scripthashLength = 20
+
 const (
 	NEO NativeAsset = "c56f33fc6ecfcd0c225c4ab356fee59390af8560be0e930faebe74a6daff7c9b"
 	GAS NativeAsset = "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7"

neoutils/smartcontract/parser.go

@@ -142,6 +142,26 @@ type appcall struct {
 	scriptHash       []byte
 }
 
+func (p *Parser) FindScriptHashes() ([]string, error) {
+	list := []string{}
+	b, err := hex.DecodeString(p.Script)
+	if err != nil {
+		return list, err
+	}
+	reversed := reverseBytes(b)
+	splittedByAppCall := bytes.Split(reversed, []byte{byte(APPCALL)})
+	for _, v := range splittedByAppCall {
+		if len(v) >= 20 {
+			startIndex := len(v) - scripthashLength
+			endIndex := len(v)
+			s := reversed[startIndex:endIndex]
+			hashString := fmt.Sprintf("%x", s)
+			list = append(list, hashString)
+		}
+	}
+	return list, nil
+}
+
 func (p *Parser) splitScriptWithAPPCALL() ([]appcall, error) {
 
 	list := []appcall{}
@@ -201,6 +221,9 @@ func (p *Parser) splitScriptWithAPPCALL() ([]appcall, error) {
 			tempOperationAndArgs := []byte{}
 			tempScriptHash := []byte{}
 			if index == 0 {
+				// if len(splitted[index+1]) < 20 {
+				// 	continue
+				// }
 				tempOperationAndArgs = splitted[index]
 				tempScriptHash = reverseBytes(splitted[index+1][:20])
 			} else {

neoutils/smartcontract/parser_test.go

@@ -39,7 +39,7 @@ func TestParserGetListOfOperations(t *testing.T) {
 
 func TestGetScripthashFromScript(t *testing.T) {
 	expectedResult := "b7c1f850a025e34455e7e98c588c784385077fb1"
-	p := smartcontract.NewParserWithScript("0830f4e2644b020000140c17e908b4014177e01d1a7fc3e6b5ed1ea83905141ffb723601fe7bf5e78b9ec6f6c79d69e317b9c753c1087472616e7366657267cf9472821400ceb06ca780c2a937fec5bbec51b9661a50b4e3696743e8")
+	p := smartcontract.NewParserWithScript("0800b90eef16000000141ffb723601fe7bf5e78b9ec6f6c79d69e317b9c71456f2328b6ecb7e42e7875eed2f6f8d674dab383b53c1087472616e7366657267fb1c540417067c270dee32f21023aa8b9b71abce66c4485313df54e64f")
 	result, err := p.GetListOfScriptHashes()
 	if err != nil {
 		log.Printf("Expected: %v but got error : %v", expectedResult, err)
@@ -50,6 +50,18 @@ func TestGetScripthashFromScript(t *testing.T) {
 	log.Printf("result = %v", result)
 }
 
+func TestFindScriptHash(t *testing.T) {
+	s := "0800b90eef16000000141ffb723601fe7bf5e78b9ec6f6c79d69e317b9c71456f2328b6ecb7e42e7875eed2f6f8d674dab383b53c1087472616e7366657267fb1c540417067c270dee32f21023aa8b9b71abce66c4485313df54e64f"
+
+	p := smartcontract.NewParserWithScript(s)
+	list, err := p.FindScriptHashes()
+	if err != nil {
+		t.Fail()
+		return
+	}
+	log.Printf("%+v", list)
+}
+
 func TestParserSingleAPPCALL(t *testing.T) {
 	// expectedToAddress := "AM8pnu1yK7ViMt7Sw2nPpbtPQXTwjjkykn"
 

neoutils/utils_test.go

@@ -23,13 +23,10 @@ func TestConvertScripthashFromParamToNEOAddress(t *testing.T) {
 }
 
 func TestScriptHashToNEOAddress(t *testing.T) {
-	hash := "cc1bf80ceb9db91792c84feb8353921d9df3b4e8"
-
+	hash := "ceab719b8baa2310f232ee0d277c061704541cfb"
 	address := ScriptHashToNEOAddress(hash)
-
 	scripthash := NEOAddressToScriptHash(address)
 	log.Printf("address = %v result = %s", address, scripthash)
-
 	if scripthash != hash {
 		t.Fail()
 	}