git.delta.rocks / unique-network / refs/commits / edc04ac6ff0c

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#![cfg_attr(not(feature = "std"), no_std)]1819use core::ops::Deref;20use frame_support::{ensure};21use pallet_evm::account::CrossAccountId;22use up_data_structs::{23	AccessMode, CollectionId, TokenId, CreateCollectionData, mapping::TokenAddressMapping,24	budget::Budget,25};26use pallet_common::{27	Error as CommonError, Event as CommonEvent, Pallet as PalletCommon, CollectionHandle,28	dispatch::CollectionDispatch,29};30use pallet_structure::Pallet as PalletStructure;31use pallet_evm_coder_substrate::WithRecorder;32use sp_core::H160;33use sp_runtime::{ArithmeticError, DispatchError, DispatchResult};34use sp_std::collections::btree_map::BTreeMap;3536pub use pallet::*;3738use crate::erc::ERC20Events;39#[cfg(feature = "runtime-benchmarks")]40pub mod benchmarking;41pub mod common;42pub mod erc;43pub mod weights;4445pub type CreateItemData<T> = (<T as pallet_evm::account::Config>::CrossAccountId, u128);46pub(crate) type SelfWeightOf<T> = <T as Config>::WeightInfo;4748#[frame_support::pallet]49pub mod pallet {50	use frame_support::{Blake2_128, Blake2_128Concat, Twox64Concat, pallet_prelude::*, storage::Key};51	use up_data_structs::CollectionId;52	use super::weights::WeightInfo;5354	#[pallet::error]55	pub enum Error<T> {56		/// Not Fungible item data used to mint in Fungible collection.57		NotFungibleDataUsedToMintFungibleCollectionToken,58		/// Not default id passed as TokenId argument59		FungibleItemsHaveNoId,60		/// Tried to set data for fungible item61		FungibleItemsDontHaveData,62		/// Fungible token does not support nested63		FungibleDisallowsNesting,64		/// Setting item properties is not allowed65		SettingPropertiesNotAllowed,66	}6768	#[pallet::config]69	pub trait Config:70		frame_system::Config + pallet_common::Config + pallet_structure::Config71	{72		type WeightInfo: WeightInfo;73	}7475	#[pallet::pallet]76	#[pallet::generate_store(pub(super) trait Store)]77	pub struct Pallet<T>(_);7879	#[pallet::storage]80	pub type TotalSupply<T: Config> =81		StorageMap<Hasher = Twox64Concat, Key = CollectionId, Value = u128, QueryKind = ValueQuery>;8283	#[pallet::storage]84	pub type Balance<T: Config> = StorageNMap<85		Key = (86			Key<Twox64Concat, CollectionId>,87			Key<Blake2_128Concat, T::CrossAccountId>,88		),89		Value = u128,90		QueryKind = ValueQuery,91	>;9293	#[pallet::storage]94	pub type Allowance<T: Config> = StorageNMap<95		Key = (96			Key<Twox64Concat, CollectionId>,97			Key<Blake2_128, T::CrossAccountId>,98			Key<Blake2_128Concat, T::CrossAccountId>,99		),100		Value = u128,101		QueryKind = ValueQuery,102	>;103}104105pub struct FungibleHandle<T: Config>(pallet_common::CollectionHandle<T>);106impl<T: Config> FungibleHandle<T> {107	pub fn cast(inner: pallet_common::CollectionHandle<T>) -> Self {108		Self(inner)109	}110	pub fn into_inner(self) -> pallet_common::CollectionHandle<T> {111		self.0112	}113	pub fn common_mut(&mut self) -> &mut pallet_common::CollectionHandle<T> {114		&mut self.0115	}116}117impl<T: Config> WithRecorder<T> for FungibleHandle<T> {118	fn recorder(&self) -> &pallet_evm_coder_substrate::SubstrateRecorder<T> {119		self.0.recorder()120	}121	fn into_recorder(self) -> pallet_evm_coder_substrate::SubstrateRecorder<T> {122		self.0.into_recorder()123	}124}125impl<T: Config> Deref for FungibleHandle<T> {126	type Target = pallet_common::CollectionHandle<T>;127128	fn deref(&self) -> &Self::Target {129		&self.0130	}131}132133impl<T: Config> Pallet<T> {134	pub fn init_collection(135		owner: T::AccountId,136		data: CreateCollectionData<T::AccountId>,137	) -> Result<CollectionId, DispatchError> {138		<PalletCommon<T>>::init_collection(owner, data)139	}140	pub fn destroy_collection(141		collection: FungibleHandle<T>,142		sender: &T::CrossAccountId,143	) -> DispatchResult {144		let id = collection.id;145146		// =========147148		PalletCommon::destroy_collection(collection.0, sender)?;149150		<TotalSupply<T>>::remove(id);151		<Balance<T>>::remove_prefix((id,), None);152		<Allowance<T>>::remove_prefix((id,), None);153		Ok(())154	}155156	pub fn burn(157		collection: &FungibleHandle<T>,158		owner: &T::CrossAccountId,159		amount: u128,160	) -> DispatchResult {161		let total_supply = <TotalSupply<T>>::get(collection.id)162			.checked_sub(amount)163			.ok_or(<CommonError<T>>::TokenValueTooLow)?;164165		let balance = <Balance<T>>::get((collection.id, owner))166			.checked_sub(amount)167			.ok_or(<CommonError<T>>::TokenValueTooLow)?;168169		if collection.access == AccessMode::AllowList {170			collection.check_allowlist(owner)?;171		}172173		// =========174175		if balance == 0 {176			<Balance<T>>::remove((collection.id, owner));177		} else {178			<Balance<T>>::insert((collection.id, owner), balance);179		}180		<TotalSupply<T>>::insert(collection.id, total_supply);181182		collection.log_mirrored(ERC20Events::Transfer {183			from: *owner.as_eth(),184			to: H160::default(),185			value: amount.into(),186		});187		<PalletCommon<T>>::deposit_event(CommonEvent::ItemDestroyed(188			collection.id,189			TokenId::default(),190			owner.clone(),191			amount,192		));193		Ok(())194	}195196	pub fn transfer(197		collection: &FungibleHandle<T>,198		from: &T::CrossAccountId,199		to: &T::CrossAccountId,200		amount: u128,201		nesting_budget: &dyn Budget,202	) -> DispatchResult {203		ensure!(204			collection.limits.transfers_enabled(),205			<CommonError<T>>::TransferNotAllowed,206		);207208		if collection.access == AccessMode::AllowList {209			collection.check_allowlist(from)?;210			collection.check_allowlist(to)?;211		}212		<PalletCommon<T>>::ensure_correct_receiver(to)?;213214		let balance_from = <Balance<T>>::get((collection.id, from))215			.checked_sub(amount)216			.ok_or(<CommonError<T>>::TokenValueTooLow)?;217		let balance_to = if from != to {218			Some(219				<Balance<T>>::get((collection.id, to))220					.checked_add(amount)221					.ok_or(ArithmeticError::Overflow)?,222			)223		} else {224			None225		};226227		if let Some(target) = T::CrossTokenAddressMapping::address_to_token(to) {228			let handle = <CollectionHandle<T>>::try_get(target.0)?;229			let dispatch = T::CollectionDispatch::dispatch(handle);230			let dispatch = dispatch.as_dyn();231232			dispatch.check_nesting(233				from.clone(),234				(collection.id, TokenId::default()),235				target.1,236				nesting_budget,237			)?;238		}239240		// =========241242		if let Some(balance_to) = balance_to {243			// from != to244			if balance_from == 0 {245				<Balance<T>>::remove((collection.id, from));246			} else {247				<Balance<T>>::insert((collection.id, from), balance_from);248			}249			<Balance<T>>::insert((collection.id, to), balance_to);250		}251252		collection.log_mirrored(ERC20Events::Transfer {253			from: *from.as_eth(),254			to: *to.as_eth(),255			value: amount.into(),256		});257		<PalletCommon<T>>::deposit_event(CommonEvent::Transfer(258			collection.id,259			TokenId::default(),260			from.clone(),261			to.clone(),262			amount,263		));264		Ok(())265	}266267	pub fn create_multiple_items(268		collection: &FungibleHandle<T>,269		sender: &T::CrossAccountId,270		data: BTreeMap<T::CrossAccountId, u128>,271		nesting_budget: &dyn Budget,272	) -> DispatchResult {273		if !collection.is_owner_or_admin(sender) {274			ensure!(275				collection.mint_mode,276				<CommonError<T>>::PublicMintingNotAllowed277			);278			collection.check_allowlist(sender)?;279280			for (owner, _) in data.iter() {281				collection.check_allowlist(owner)?;282			}283		}284285		let total_supply = data286			.iter()287			.map(|(_, v)| *v)288			.try_fold(<TotalSupply<T>>::get(collection.id), |acc, v| {289				acc.checked_add(v)290			})291			.ok_or(ArithmeticError::Overflow)?;292293		let mut balances = data;294		for (k, v) in balances.iter_mut() {295			*v = <Balance<T>>::get((collection.id, &k))296				.checked_add(*v)297				.ok_or(ArithmeticError::Overflow)?;298		}299300		for (to, _) in balances.iter() {301			if let Some(target) = T::CrossTokenAddressMapping::address_to_token(to) {302				let handle = <CollectionHandle<T>>::try_get(target.0)?;303				let dispatch = T::CollectionDispatch::dispatch(handle);304				let dispatch = dispatch.as_dyn();305306				dispatch.check_nesting(307					sender.clone(),308					(collection.id, TokenId::default()),309					target.1,310					nesting_budget,311				)?;312			}313		}314315		// =========316317		<TotalSupply<T>>::insert(collection.id, total_supply);318		for (user, amount) in balances {319			<Balance<T>>::insert((collection.id, &user), amount);320321			collection.log_mirrored(ERC20Events::Transfer {322				from: H160::default(),323				to: *user.as_eth(),324				value: amount.into(),325			});326			<PalletCommon<T>>::deposit_event(CommonEvent::ItemCreated(327				collection.id,328				TokenId::default(),329				user.clone(),330				amount,331			));332		}333334		Ok(())335	}336337	fn set_allowance_unchecked(338		collection: &FungibleHandle<T>,339		owner: &T::CrossAccountId,340		spender: &T::CrossAccountId,341		amount: u128,342	) {343		if amount == 0 {344			<Allowance<T>>::remove((collection.id, owner, spender));345		} else {346			<Allowance<T>>::insert((collection.id, owner, spender), amount);347		}348349		collection.log_mirrored(ERC20Events::Approval {350			owner: *owner.as_eth(),351			spender: *spender.as_eth(),352			value: amount.into(),353		});354		<PalletCommon<T>>::deposit_event(CommonEvent::Approved(355			collection.id,356			TokenId(0),357			owner.clone(),358			spender.clone(),359			amount,360		));361	}362363	pub fn set_allowance(364		collection: &FungibleHandle<T>,365		owner: &T::CrossAccountId,366		spender: &T::CrossAccountId,367		amount: u128,368	) -> DispatchResult {369		if collection.access == AccessMode::AllowList {370			collection.check_allowlist(owner)?;371			collection.check_allowlist(spender)?;372		}373374		if <Balance<T>>::get((collection.id, owner)) < amount {375			ensure!(376				collection.ignores_owned_amount(owner),377				<CommonError<T>>::CantApproveMoreThanOwned378			);379		}380381		// =========382383		Self::set_allowance_unchecked(collection, owner, spender, amount);384		Ok(())385	}386387	fn check_allowed(388		collection: &FungibleHandle<T>,389		spender: &T::CrossAccountId,390		from: &T::CrossAccountId,391		amount: u128,392		nesting_budget: &dyn Budget,393	) -> Result<Option<u128>, DispatchError> {394		if spender.conv_eq(from) {395			return Ok(None);396		}397		if collection.access == AccessMode::AllowList {398			// `from`, `to` checked in [`transfer`]399			collection.check_allowlist(spender)?;400		}401		if let Some(source) = T::CrossTokenAddressMapping::address_to_token(from) {402			// TODO: should collection owner be allowed to perform this transfer?403			ensure!(404				<PalletStructure<T>>::check_indirectly_owned(405					spender.clone(),406					source.0,407					source.1,408					None,409					nesting_budget410				)?,411				<CommonError<T>>::ApprovedValueTooLow,412			);413			return Ok(None);414		}415		let allowance = <Allowance<T>>::get((collection.id, from, spender)).checked_sub(amount);416		if allowance.is_none() {417			ensure!(418				collection.ignores_allowance(spender),419				<CommonError<T>>::ApprovedValueTooLow420			);421		}422423		Ok(allowance)424	}425426	pub fn transfer_from(427		collection: &FungibleHandle<T>,428		spender: &T::CrossAccountId,429		from: &T::CrossAccountId,430		to: &T::CrossAccountId,431		amount: u128,432		nesting_budget: &dyn Budget,433	) -> DispatchResult {434		let allowance = Self::check_allowed(collection, spender, from, amount, nesting_budget)?;435436		// =========437438		Self::transfer(collection, from, to, amount, nesting_budget)?;439		if let Some(allowance) = allowance {440			Self::set_allowance_unchecked(collection, from, spender, allowance);441		}442		Ok(())443	}444445	pub fn burn_from(446		collection: &FungibleHandle<T>,447		spender: &T::CrossAccountId,448		from: &T::CrossAccountId,449		amount: u128,450		nesting_budget: &dyn Budget,451	) -> DispatchResult {452		let allowance = Self::check_allowed(collection, spender, from, amount, nesting_budget)?;453454		// =========455456		Self::burn(collection, from, amount)?;457		if let Some(allowance) = allowance {458			Self::set_allowance_unchecked(collection, from, spender, allowance);459		}460		Ok(())461	}462463	/// Delegated to `create_multiple_items`464	pub fn create_item(465		collection: &FungibleHandle<T>,466		sender: &T::CrossAccountId,467		data: CreateItemData<T>,468		nesting_budget: &dyn Budget,469	) -> DispatchResult {470		Self::create_multiple_items(471			collection,472			sender,473			[(data.0, data.1)].into_iter().collect(),474			nesting_budget,475		)476	}477}