127 lines
3.8 KiB
Rust
127 lines
3.8 KiB
Rust
// This file is part of Substrate.
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// Copyright (C) Parity Technologies (UK) Ltd.
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// SPDX-License-Identifier: Apache-2.0
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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use crate::Config;
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use codec::{Decode, DecodeWithMemTracking, Encode};
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use core::marker::PhantomData;
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use frame_support::{pallet_prelude::TransactionSource, traits::OriginTrait, DefaultNoBound};
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use scale_info::TypeInfo;
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use sp_runtime::{
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impl_tx_ext_default,
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traits::{DispatchInfoOf, TransactionExtension},
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transaction_validity::InvalidTransaction,
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};
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/// Check to ensure that the sender is not the zero address.
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#[derive(Encode, Decode, DecodeWithMemTracking, DefaultNoBound, Clone, Eq, PartialEq, TypeInfo)]
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#[scale_info(skip_type_params(T))]
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pub struct CheckNonZeroSender<T>(PhantomData<T>);
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impl<T: Config + Send + Sync> core::fmt::Debug for CheckNonZeroSender<T> {
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#[cfg(feature = "std")]
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fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
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write!(f, "CheckNonZeroSender")
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}
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#[cfg(not(feature = "std"))]
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fn fmt(&self, _: &mut core::fmt::Formatter) -> core::fmt::Result {
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Ok(())
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}
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}
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impl<T: Config + Send + Sync> CheckNonZeroSender<T> {
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/// Create new `TransactionExtension` to check runtime version.
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pub fn new() -> Self {
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Self(core::marker::PhantomData)
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}
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}
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impl<T: Config + Send + Sync> TransactionExtension<T::RuntimeCall> for CheckNonZeroSender<T> {
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const IDENTIFIER: &'static str = "CheckNonZeroSender";
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type Implicit = ();
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type Val = ();
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type Pre = ();
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fn weight(&self, _: &T::RuntimeCall) -> sp_weights::Weight {
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<T::ExtensionsWeightInfo as super::WeightInfo>::check_non_zero_sender()
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}
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fn validate(
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&self,
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origin: <T as Config>::RuntimeOrigin,
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_call: &T::RuntimeCall,
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_info: &DispatchInfoOf<T::RuntimeCall>,
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_len: usize,
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_self_implicit: Self::Implicit,
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_inherited_implication: &impl Encode,
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_source: TransactionSource,
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) -> sp_runtime::traits::ValidateResult<Self::Val, T::RuntimeCall> {
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if let Some(who) = origin.as_signer() {
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if who.using_encoded(|d| d.iter().all(|x| *x == 0)) {
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return Err(InvalidTransaction::BadSigner.into());
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}
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}
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Ok((Default::default(), (), origin))
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}
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impl_tx_ext_default!(T::RuntimeCall; prepare);
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::mock::{new_test_ext, Test, CALL};
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use frame_support::{assert_ok, dispatch::DispatchInfo};
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use sp_runtime::{
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traits::{AsTransactionAuthorizedOrigin, DispatchTransaction, TxBaseImplication},
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transaction_validity::{TransactionSource::External, TransactionValidityError},
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};
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#[test]
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fn zero_account_ban_works() {
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new_test_ext().execute_with(|| {
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let info = DispatchInfo::default();
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let len = 0_usize;
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assert_eq!(
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CheckNonZeroSender::<Test>::new()
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.validate_only(Some(0).into(), CALL, &info, len, External, 0)
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.unwrap_err(),
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TransactionValidityError::from(InvalidTransaction::BadSigner)
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);
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assert_ok!(CheckNonZeroSender::<Test>::new().validate_only(
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Some(1).into(),
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CALL,
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&info,
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len,
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External,
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0,
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));
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})
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}
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#[test]
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fn unsigned_origin_works() {
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new_test_ext().execute_with(|| {
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let info = DispatchInfo::default();
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let len = 0_usize;
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let (_, _, origin) = CheckNonZeroSender::<Test>::new()
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.validate(None.into(), CALL, &info, len, (), &TxBaseImplication(CALL), External)
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.unwrap();
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assert!(!origin.is_transaction_authorized());
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})
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}
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}
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