mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-08-10 06:55:44 +00:00
Branislav Kontur
5cdd819ed2
## Summary This PR introduces several enhancements. The current implementation of `NetworkExportTable` lacks remote location filtering support beyond `NetworkId` lookup. To provide more control and granularity, it's essential to allow configuration for bridging to different consensus `NetworkId` while restricting access e.g. to particular remote parachains. Additionally, the `StartsWith` and `Equals` and `StartsWithExplicitGlobalConsensus` helper functions, which are in active use, are moved to the `xcm-builder` and `frame_support` modules for better code organization. Adds a new `LocationWithAssetFilters` filter to enable location-based and asset-related filtering. This filter is useful for configuring the `pallet_xcm` filter for [XcmTeleportFilter](https://github.com/paritytech/polkadot-sdk/blob/master/polkadot/xcm/pallet-xcm/src/lib.rs#L212) and [XcmReserveTransferFilter](https://github.com/paritytech/polkadot-sdk/blob/master/polkadot/xcm/pallet-xcm/src/lib.rs#L216) to restrict specific assets. Furthermore, the `BridgeMessage` fields are not accessible outside of `xcm-builder`, limiting the ability to create custom logic dependent on it. --------- Co-authored-by: Francisco Aguirre <franciscoaguirreperez@gmail.com>
51 lines
2.2 KiB
Rust
51 lines
2.2 KiB
Rust
// Copyright (C) Parity Technologies (UK) Ltd.
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// This file is part of Polkadot.
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// Polkadot is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Polkadot is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Polkadot. If not, see <http://www.gnu.org/licenses/>.
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//! Various implementations and utilities for matching and filtering `MultiLocation` and
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//! `InteriorMultiLocation` types.
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use frame_support::traits::{Contains, Get};
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use xcm::latest::{InteriorMultiLocation, MultiLocation, NetworkId};
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/// An implementation of `Contains` that checks for `MultiLocation` or
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/// `InteriorMultiLocation` if starts with the provided type `T`.
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pub struct StartsWith<T>(sp_std::marker::PhantomData<T>);
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impl<T: Get<MultiLocation>> Contains<MultiLocation> for StartsWith<T> {
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fn contains(t: &MultiLocation) -> bool {
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t.starts_with(&T::get())
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}
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}
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impl<T: Get<InteriorMultiLocation>> Contains<InteriorMultiLocation> for StartsWith<T> {
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fn contains(t: &InteriorMultiLocation) -> bool {
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t.starts_with(&T::get())
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}
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}
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/// An implementation of `Contains` that checks for `MultiLocation` or
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/// `InteriorMultiLocation` if starts with expected `GlobalConsensus(NetworkId)` provided as type
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/// `T`.
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pub struct StartsWithExplicitGlobalConsensus<T>(sp_std::marker::PhantomData<T>);
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impl<T: Get<NetworkId>> Contains<MultiLocation> for StartsWithExplicitGlobalConsensus<T> {
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fn contains(location: &MultiLocation) -> bool {
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matches!(location.interior.global_consensus(), Ok(requested_network) if requested_network.eq(&T::get()))
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}
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}
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impl<T: Get<NetworkId>> Contains<InteriorMultiLocation> for StartsWithExplicitGlobalConsensus<T> {
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fn contains(location: &InteriorMultiLocation) -> bool {
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matches!(location.global_consensus(), Ok(requested_network) if requested_network.eq(&T::get()))
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}
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}
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