mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-05-01 18:17:56 +00:00
Vivek Pandya
bc53b9a03a
* Change copyright year to 2023 from 2022 * Fix incorrect update of copyright year * Remove years from copy right header * Fix remaining files * Fix typo in a header and remove update-copyright.sh
111 lines
3.1 KiB
Rust
111 lines
3.1 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, Encode};
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use frame_support::dispatch::DispatchInfo;
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use scale_info::TypeInfo;
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use sp_runtime::{
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traits::{DispatchInfoOf, Dispatchable, SignedExtension},
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transaction_validity::{
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InvalidTransaction, TransactionValidity, TransactionValidityError, ValidTransaction,
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},
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};
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use sp_std::{marker::PhantomData, prelude::*};
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/// Check to ensure that the sender is not the zero address.
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#[derive(Encode, Decode, Clone, Eq, PartialEq, TypeInfo)]
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#[scale_info(skip_type_params(T))]
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pub struct CheckNonZeroSender<T: Config + Send + Sync>(PhantomData<T>);
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impl<T: Config + Send + Sync> sp_std::fmt::Debug for CheckNonZeroSender<T> {
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#[cfg(feature = "std")]
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fn fmt(&self, f: &mut sp_std::fmt::Formatter) -> sp_std::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 sp_std::fmt::Formatter) -> sp_std::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 `SignedExtension` to check runtime version.
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pub fn new() -> Self {
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Self(sp_std::marker::PhantomData)
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}
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}
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impl<T: Config + Send + Sync> SignedExtension for CheckNonZeroSender<T>
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where
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T::RuntimeCall: Dispatchable<Info = DispatchInfo>,
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{
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type AccountId = T::AccountId;
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type Call = T::RuntimeCall;
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type AdditionalSigned = ();
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type Pre = ();
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const IDENTIFIER: &'static str = "CheckNonZeroSender";
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fn additional_signed(&self) -> sp_std::result::Result<(), TransactionValidityError> {
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Ok(())
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}
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fn pre_dispatch(
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self,
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who: &Self::AccountId,
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call: &Self::Call,
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info: &DispatchInfoOf<Self::Call>,
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len: usize,
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) -> Result<Self::Pre, TransactionValidityError> {
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self.validate(who, call, info, len).map(|_| ())
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}
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fn validate(
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&self,
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who: &Self::AccountId,
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_call: &Self::Call,
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_info: &DispatchInfoOf<Self::Call>,
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_len: usize,
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) -> TransactionValidity {
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if who.using_encoded(|d| d.iter().all(|x| *x == 0)) {
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return Err(TransactionValidityError::Invalid(InvalidTransaction::BadSigner))
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}
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Ok(ValidTransaction::default())
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}
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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_noop, assert_ok};
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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_noop!(
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CheckNonZeroSender::<Test>::new().validate(&0, CALL, &info, len),
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InvalidTransaction::BadSigner
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);
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assert_ok!(CheckNonZeroSender::<Test>::new().validate(&1, CALL, &info, len));
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})
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}
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}
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