add recover_signer for validate

Author: helin6

frame/ethereum/src/lib.rs

@@ -150,15 +150,21 @@ where
 		dispatch_info: &DispatchInfoOf<T::RuntimeCall>,
 		len: usize,
 	) -> Option<TransactionValidity> {
-		if let Call::transact { transaction, source: _ } = self {
+		if let Call::transact { transaction, source } = self {
 			if let Err(e) = CheckWeight::<T>::do_validate(dispatch_info, len) {
 				return Some(Err(e));
 			}
-
-			Some(Pallet::<T>::validate_transaction_in_pool(
-				*origin,
-				transaction,
-			))
+			match Pallet::<T>::recover_signer(&transaction) {
+				Some(expect_source) => if expect_source != *source {
+					return Some(Err(TransactionValidityError::Invalid(InvalidTransaction::BadSigner)));
+				} else {
+					Some(Pallet::<T>::validate_transaction_in_pool(
+						*origin,
+						transaction,
+					))
+				},
+				None => return Some(Err(TransactionValidityError::Invalid(InvalidTransaction::BadSigner))),
+			}
 		} else {
 			None
 		}