git.delta.rocks / unique-network / refs/commits / fbd9bd539b89

1// Copyright 2019-2022 Unique Network (Gibraltar) Ltd.2// This file is part of Unique Network.34// Unique Network is free software: you can redistribute it and/or modify5// it under the terms of the GNU General Public License as published by6// the Free Software Foundation, either version 3 of the License, or7// (at your option) any later version.89// Unique Network is distributed in the hope that it will be useful,10// but WITHOUT ANY WARRANTY; without even the implied warranty of11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the12// GNU General Public License for more details.1314// You should have received a copy of the GNU General Public License15// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.1617//! Implements EVM sponsoring logic via TransactionValidityHack1819use evm_coder::{Call, abi::AbiReader};20use pallet_common::{CollectionHandle, eth::map_eth_to_id};21use sp_core::H160;22use sp_std::prelude::*;23use up_sponsorship::SponsorshipHandler;24use core::marker::PhantomData;25use core::convert::TryInto;26use pallet_evm::account::CrossAccountId;27use up_data_structs::{TokenId, CreateItemData, CreateNftData, CollectionMode};28use pallet_unique::Config as UniqueConfig;2930use crate::sponsoring::*;3132use pallet_nonfungible::erc::{33	UniqueNFTCall, ERC721UniqueExtensionsCall, ERC721MintableCall, ERC721Call,34};35use pallet_fungible::erc::{UniqueFungibleCall, ERC20Call};36use pallet_fungible::Config as FungibleConfig;37use pallet_nonfungible::Config as NonfungibleConfig;38use pallet_refungible::Config as RefungibleConfig;3940pub struct UniqueEthSponsorshipHandler<T: UniqueConfig>(PhantomData<*const T>);41impl<T: UniqueConfig + FungibleConfig + NonfungibleConfig + RefungibleConfig>42	SponsorshipHandler<T::CrossAccountId, (H160, Vec<u8>)> for UniqueEthSponsorshipHandler<T>43{44	fn get_sponsor(who: &T::CrossAccountId, call: &(H160, Vec<u8>)) -> Option<T::CrossAccountId> {45		let collection_id = map_eth_to_id(&call.0)?;46		let collection = <CollectionHandle<T>>::new(collection_id)?;47		let sponsor = collection.sponsorship.sponsor()?.clone();48		let (method_id, mut reader) = AbiReader::new_call(&call.1).ok()?;49		Some(T::CrossAccountId::from_sub(match &collection.mode {50			CollectionMode::NFT => {51				let call = <UniqueNFTCall<T>>::parse(method_id, &mut reader).ok()??;52				match call {53					UniqueNFTCall::ERC721UniqueExtensions(54						ERC721UniqueExtensionsCall::Transfer { token_id, .. },55					) => {56						let token_id: TokenId = token_id.try_into().ok()?;57						withdraw_transfer::<T>(&collection, &who, &token_id).map(|()| sponsor)58					}59					UniqueNFTCall::ERC721Mintable(60						ERC721MintableCall::Mint { token_id, .. }61						| ERC721MintableCall::MintWithTokenUri { token_id, .. },62					) => {63						let _token_id: TokenId = token_id.try_into().ok()?;64						withdraw_create_item::<T>(65							&collection,66							&who,67							&CreateItemData::NFT(CreateNftData::default()),68						)69						.map(|()| sponsor)70					}71					UniqueNFTCall::ERC721(ERC721Call::TransferFrom { token_id, from, .. }) => {72						let token_id: TokenId = token_id.try_into().ok()?;73						let from = T::CrossAccountId::from_eth(from);74						withdraw_transfer::<T>(&collection, &from, &token_id).map(|()| sponsor)75					}76					UniqueNFTCall::ERC721(ERC721Call::Approve { token_id, .. }) => {77						let token_id: TokenId = token_id.try_into().ok()?;78						withdraw_approve::<T>(&collection, who.as_sub(), &token_id)79							.map(|()| sponsor)80					}81					_ => None,82				}83			}84			CollectionMode::Fungible(_) => {85				let call = <UniqueFungibleCall<T>>::parse(method_id, &mut reader).ok()??;86				#[allow(clippy::single_match)]87				match call {88					UniqueFungibleCall::ERC20(ERC20Call::Transfer { .. }) => {89						withdraw_transfer::<T>(&collection, who, &TokenId::default())90							.map(|()| sponsor)91					}92					UniqueFungibleCall::ERC20(ERC20Call::TransferFrom { from, .. }) => {93						let from = T::CrossAccountId::from_eth(from);94						withdraw_transfer::<T>(&collection, &from, &TokenId::default())95							.map(|()| sponsor)96					}97					UniqueFungibleCall::ERC20(ERC20Call::Approve { .. }) => {98						withdraw_approve::<T>(&collection, who.as_sub(), &TokenId::default())99							.map(|()| sponsor)100					}101					_ => None,102				}103			}104			_ => None,105		}?))106	}107}