git.delta.rocks / unique-network / refs/commits / e83438b2f76b

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/>.1617use crate::{18	Config, Call, CreateItemBasket, VariableMetaDataBasket, ReFungibleTransferBasket,19	FungibleTransferBasket, NftTransferBasket, CreateItemData, CollectionMode, NftApproveBasket,20	FungibleApproveBasket, RefungibleApproveBasket,21};22use core::marker::PhantomData;23use up_sponsorship::SponsorshipHandler;24use frame_support::{25	traits::{IsSubType},26	storage::{StorageMap, StorageDoubleMap, StorageNMap},27};28use up_data_structs::{29	CollectionId, FUNGIBLE_SPONSOR_TRANSFER_TIMEOUT, MetaUpdatePermission,30	NFT_SPONSOR_TRANSFER_TIMEOUT, REFUNGIBLE_SPONSOR_TRANSFER_TIMEOUT, TokenId,31};32use pallet_common::{CollectionHandle};33use pallet_common::account::CrossAccountId;3435pub fn withdraw_transfer<T: Config>(36	collection: &CollectionHandle<T>,37	who: &T::CrossAccountId,38	item_id: &TokenId,39) -> Option<()> {40	// preliminary sponsoring correctness check41	match collection.mode {42		CollectionMode::NFT => {43			let owner = pallet_nonfungible::TokenData::<T>::get((collection.id, item_id))?.owner;44			if !owner.conv_eq(who) {45				return None;46			}47		}48		CollectionMode::Fungible(_) => {49			if item_id != &TokenId::default() {50				return None;51			}52			if <pallet_fungible::Balance<T>>::get((collection.id, who)) == 0 {53				return None;54			}55		}56		CollectionMode::ReFungible => {57			if !<pallet_refungible::Owned<T>>::get((collection.id, who, item_id)) {58				return None;59			}60		}61	}6263	// sponsor timeout64	let block_number = <frame_system::Pallet<T>>::block_number() as T::BlockNumber;65	let limit = collection66		.limits67		.sponsor_transfer_timeout(match collection.mode {68			CollectionMode::NFT => NFT_SPONSOR_TRANSFER_TIMEOUT,69			CollectionMode::Fungible(_) => FUNGIBLE_SPONSOR_TRANSFER_TIMEOUT,70			CollectionMode::ReFungible => REFUNGIBLE_SPONSOR_TRANSFER_TIMEOUT,71		});7273	let last_tx_block = match collection.mode {74		CollectionMode::NFT => <NftTransferBasket<T>>::get(collection.id, item_id),75		CollectionMode::Fungible(_) => {76			<FungibleTransferBasket<T>>::get(collection.id, who.as_sub())77		}78		CollectionMode::ReFungible => {79			<ReFungibleTransferBasket<T>>::get((collection.id, item_id, who.as_sub()))80		}81	};8283	if let Some(last_tx_block) = last_tx_block {84		let timeout = last_tx_block + limit.into();85		if block_number < timeout {86			return None;87		}88	}8990	match collection.mode {91		CollectionMode::NFT => <NftTransferBasket<T>>::insert(collection.id, item_id, block_number),92		CollectionMode::Fungible(_) => {93			<FungibleTransferBasket<T>>::insert(collection.id, who.as_sub(), block_number)94		}95		CollectionMode::ReFungible => <ReFungibleTransferBasket<T>>::insert(96			(collection.id, item_id, who.as_sub()),97			block_number,98		),99	};100101	Some(())102}103104pub fn withdraw_create_item<T: Config>(105	collection: &CollectionHandle<T>,106	who: &T::AccountId,107	_properties: &CreateItemData,108) -> Option<()> {109	if _properties.data_size() as u32 > collection.limits.sponsored_data_size() {110		return None;111	}112113	// sponsor timeout114	let block_number = <frame_system::Pallet<T>>::block_number() as T::BlockNumber;115	let limit = collection116		.limits117		.sponsor_transfer_timeout(match _properties {118			CreateItemData::NFT(_) => NFT_SPONSOR_TRANSFER_TIMEOUT,119			CreateItemData::Fungible(_) => FUNGIBLE_SPONSOR_TRANSFER_TIMEOUT,120			CreateItemData::ReFungible(_) => REFUNGIBLE_SPONSOR_TRANSFER_TIMEOUT,121		});122123	if let Some(last_tx_block) = <CreateItemBasket<T>>::get((collection.id, &who)) {124		let timeout = last_tx_block + limit.into();125		if block_number < timeout {126			return None;127		}128	}129130	CreateItemBasket::<T>::insert((collection.id, who.clone()), block_number);131132	Some(())133}134135pub fn withdraw_set_variable_meta_data<T: Config>(136	who: &T::CrossAccountId,137	collection: &CollectionHandle<T>,138	item_id: &TokenId,139	data: &[u8],140) -> Option<()> {141	// TODO: make it work for admins142	if collection.meta_update_permission != MetaUpdatePermission::ItemOwner {143		return None;144	}145	// preliminary sponsoring correctness check146	match collection.mode {147		CollectionMode::NFT => {148			let owner = pallet_nonfungible::TokenData::<T>::get((collection.id, item_id))?.owner;149			if !owner.conv_eq(who) {150				return None;151			}152		}153		CollectionMode::Fungible(_) => {154			if item_id != &TokenId::default() {155				return None;156			}157			if <pallet_fungible::Balance<T>>::get((collection.id, who)) == 0 {158				return None;159			}160		}161		CollectionMode::ReFungible => {162			if !<pallet_refungible::Owned<T>>::get((collection.id, who, item_id)) {163				return None;164			}165		}166	}167168	// Can't sponsor fungible collection, this tx will be rejected169	// as invalid170	if matches!(collection.mode, CollectionMode::Fungible(_)) {171		return None;172	}173	if data.len() > collection.limits.sponsored_data_size() as usize {174		return None;175	}176177	let block_number = <frame_system::Pallet<T>>::block_number() as T::BlockNumber;178	let limit = collection.limits.sponsored_data_rate_limit()?;179180	if let Some(last_tx_block) = VariableMetaDataBasket::<T>::get(collection.id, item_id) {181		let timeout = last_tx_block + limit.into();182		if block_number < timeout {183			return None;184		}185	}186187	<VariableMetaDataBasket<T>>::insert(collection.id, item_id, block_number);188189	Some(())190}191192pub fn withdraw_approve<T: Config>(193	collection: &CollectionHandle<T>,194	who: &T::AccountId,195	item_id: &TokenId,196) -> Option<()> {197	// sponsor timeout198	let block_number = <frame_system::Pallet<T>>::block_number() as T::BlockNumber;199	let limit = collection.limits.sponsor_approve_timeout();200201	let last_tx_block = match collection.mode {202		CollectionMode::NFT => <NftApproveBasket<T>>::get(collection.id, item_id),203		CollectionMode::Fungible(_) => <FungibleApproveBasket<T>>::get(collection.id, who),204		CollectionMode::ReFungible => {205			<RefungibleApproveBasket<T>>::get((collection.id, item_id, who))206		}207	};208209	if let Some(last_tx_block) = last_tx_block {210		let timeout = last_tx_block + limit.into();211		if block_number < timeout {212			return None;213		}214	}215216	match collection.mode {217		CollectionMode::NFT => <NftApproveBasket<T>>::insert(collection.id, item_id, block_number),218		CollectionMode::Fungible(_) => {219			<FungibleApproveBasket<T>>::insert(collection.id, who, block_number)220		}221		CollectionMode::ReFungible => {222			<RefungibleApproveBasket<T>>::insert((collection.id, item_id, who), block_number)223		}224	};225226	Some(())227}228229fn load<T: Config>(id: CollectionId) -> Option<(T::AccountId, CollectionHandle<T>)> {230	let collection = CollectionHandle::new(id)?;231	let sponsor = collection.sponsorship.sponsor().cloned()?;232	Some((sponsor, collection))233}234235pub struct UniqueSponsorshipHandler<T>(PhantomData<T>);236impl<T, C> SponsorshipHandler<T::AccountId, C> for UniqueSponsorshipHandler<T>237where238	T: Config,239	C: IsSubType<Call<T>>,240{241	fn get_sponsor(who: &T::AccountId, call: &C) -> Option<T::AccountId> {242		match IsSubType::<Call<T>>::is_sub_type(call)? {243			Call::create_item {244				collection_id,245				data,246				..247			} => {248				let (sponsor, collection) = load(*collection_id)?;249				withdraw_create_item::<T>(&collection, who, data).map(|()| sponsor)250			}251			Call::transfer {252				collection_id,253				item_id,254				..255			} => {256				let (sponsor, collection) = load(*collection_id)?;257				withdraw_transfer::<T>(258					&collection,259					&T::CrossAccountId::from_sub(who.clone()),260					item_id,261				)262				.map(|()| sponsor)263			}264			Call::transfer_from {265				collection_id,266				item_id,267				from,268				..269			} => {270				let (sponsor, collection) = load(*collection_id)?;271				withdraw_transfer::<T>(&collection, from, item_id).map(|()| sponsor)272			}273			Call::approve {274				collection_id,275				item_id,276				..277			} => {278				let (sponsor, collection) = load(*collection_id)?;279				withdraw_approve::<T>(&collection, who, item_id).map(|()| sponsor)280			}281			Call::set_variable_meta_data {282				collection_id,283				item_id,284				data,285			} => {286				let (sponsor, collection) = load(*collection_id)?;287				withdraw_set_variable_meta_data::<T>(288					&T::CrossAccountId::from_sub(who.clone()),289					&collection,290					item_id,291					data,292				)293				.map(|()| sponsor)294			}295			_ => None,296		}297	}298}