difftreelog
feat create_multiple_items chain extension
in: master
2 files changed
pallets/nft/src/lib.rsdiffbeforeafterboth1//2// This file is subject to the terms and conditions defined in3// file 'LICENSE', which is part of this source code package.4//56#![recursion_limit = "1024"]78#![cfg_attr(not(feature = "std"), no_std)]910#[cfg(feature = "std")]11pub use std::*;1213#[cfg(feature = "std")]14pub use serde::*;1516use core::ops::{Deref, DerefMut};17use codec::{Decode, Encode};18pub use frame_support::{19 construct_runtime, decl_event, decl_module, decl_storage, decl_error,20 dispatch::DispatchResult,21 ensure, fail, parameter_types,22 traits::{23 Currency, ExistenceRequirement, Get, Imbalance, KeyOwnerProofSystem, OnUnbalanced,24 Randomness, IsSubType, WithdrawReasons,25 },26 weights::{27 constants::{BlockExecutionWeight, ExtrinsicBaseWeight, RocksDbWeight, WEIGHT_PER_SECOND},28 DispatchInfo, GetDispatchInfo, IdentityFee, Pays, PostDispatchInfo, Weight,29 WeightToFeePolynomial, DispatchClass,30 },31 StorageValue,32 transactional,33};3435use frame_system::{self as system, ensure_signed, ensure_root};36use sp_runtime::sp_std::prelude::Vec;37use sp_runtime::{38 traits::{39 Hash, DispatchInfoOf, Dispatchable, PostDispatchInfoOf, Saturating, SaturatedConversion, SignedExtension, Zero,40 },41 transaction_validity::{42 TransactionPriority, InvalidTransaction, TransactionValidity, TransactionValidityError, ValidTransaction,43 },44 FixedPointOperand, FixedU128,45};46use sp_runtime::traits::StaticLookup;47use pallet_contracts::chain_extension::UncheckedFrom;48use pallet_transaction_payment::OnChargeTransaction;4950#[cfg(test)]51mod mock;5253#[cfg(test)]54mod tests;5556mod default_weights;5758pub const MAX_DECIMAL_POINTS: DecimalPoints = 30;59pub const MAX_REFUNGIBLE_PIECES: u128 = 1_000_000_000_000_000_000_000;60pub const MAX_SPONSOR_TIMEOUT: u32 = 10_368_000;61pub const MAX_TOKEN_OWNERSHIP: u32 = 10_000_000;6263// Structs64// #region6566pub type CollectionId = u32;67pub type TokenId = u32;68pub type DecimalPoints = u8;6970#[derive(Encode, Decode, Eq, Debug, Clone, PartialEq)]71#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]72pub enum CollectionMode {73 Invalid,74 NFT,75 // decimal points76 Fungible(DecimalPoints),77 ReFungible,78}7980impl Default for CollectionMode {81 fn default() -> Self {82 Self::Invalid83 }84}8586impl Into<u8> for CollectionMode {87 fn into(self) -> u8 {88 match self {89 CollectionMode::Invalid => 0,90 CollectionMode::NFT => 1,91 CollectionMode::Fungible(_) => 2,92 CollectionMode::ReFungible => 3,93 }94 }95}9697#[derive(Encode, Decode, Eq, Debug, Clone, PartialEq)]98#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]99pub enum AccessMode {100 Normal,101 WhiteList,102}103impl Default for AccessMode {104 fn default() -> Self {105 Self::Normal106 }107}108109#[derive(Encode, Decode, Eq, Debug, Clone, PartialEq)]110#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]111pub enum SchemaVersion {112 ImageURL,113 Unique,114}115impl Default for SchemaVersion {116 fn default() -> Self {117 Self::ImageURL118 }119}120121#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]122#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]123pub struct Ownership<AccountId> {124 pub owner: AccountId,125 pub fraction: u128,126}127128#[derive(Encode, Decode, Debug, Clone, PartialEq)]129#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]130pub enum SponsorshipState<AccountId> {131 /// The fees are applied to the transaction sender132 Disabled,133 Unconfirmed(AccountId),134 /// Transactions are sponsored by specified account135 Confirmed(AccountId),136}137138impl<AccountId> SponsorshipState<AccountId> {139 fn sponsor(&self) -> Option<&AccountId> {140 match self {141 Self::Confirmed(sponsor) => Some(sponsor),142 _ => None,143 }144 }145146 fn pending_sponsor(&self) -> Option<&AccountId> {147 match self {148 Self::Unconfirmed(sponsor) | Self::Confirmed(sponsor) => Some(sponsor),149 _ => None,150 }151 }152153 fn confirmed(&self) -> bool {154 matches!(self, Self::Confirmed(_))155 }156}157158impl<T> Default for SponsorshipState<T> {159 fn default() -> Self {160 Self::Disabled161 }162}163164#[derive(Encode, Decode, Clone, PartialEq)]165#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]166pub struct Collection<T: Config> {167 pub owner: T::AccountId,168 pub mode: CollectionMode,169 pub access: AccessMode,170 pub decimal_points: DecimalPoints,171 pub name: Vec<u16>, // 64 include null escape char172 pub description: Vec<u16>, // 256 include null escape char173 pub token_prefix: Vec<u8>, // 16 include null escape char174 pub mint_mode: bool,175 pub offchain_schema: Vec<u8>,176 pub schema_version: SchemaVersion,177 pub sponsorship: SponsorshipState<T::AccountId>,178 pub limits: CollectionLimits<T::BlockNumber>, // Collection private restrictions 179 pub variable_on_chain_schema: Vec<u8>, //180 pub const_on_chain_schema: Vec<u8>, //181}182183pub struct CollectionHandle<T: Config> {184 pub id: CollectionId,185 collection: Collection<T>,186}187188impl<T: Config> Deref for CollectionHandle<T> {189 type Target = Collection<T>;190191 fn deref(&self) -> &Self::Target {192 &self.collection193 }194}195196impl<T: Config> DerefMut for CollectionHandle<T> {197 fn deref_mut(&mut self) -> &mut Self::Target {198 &mut self.collection199 }200}201202#[derive(Encode, Decode, Debug, Clone, PartialEq)]203#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]204pub struct NftItemType<AccountId> {205 pub owner: AccountId,206 pub const_data: Vec<u8>,207 pub variable_data: Vec<u8>,208}209210#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]211#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]212pub struct FungibleItemType {213 pub value: u128,214}215216#[derive(Encode, Decode, Debug, Clone, PartialEq)]217#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]218pub struct ReFungibleItemType<AccountId> {219 pub owner: Vec<Ownership<AccountId>>,220 pub const_data: Vec<u8>,221 pub variable_data: Vec<u8>,222}223224// #[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]225// #[cfg_attr(feature = "std", derive(Serialize, Deserialize))]226// pub struct VestingItem<AccountId, Moment> {227// pub sender: AccountId,228// pub recipient: AccountId,229// pub collection_id: CollectionId,230// pub item_id: TokenId,231// pub amount: u64,232// pub vesting_date: Moment,233// }234235#[derive(Encode, Decode, Debug, Clone, PartialEq)]236#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]237pub struct CollectionLimits<BlockNumber: Encode + Decode> {238 pub account_token_ownership_limit: u32,239 pub sponsored_data_size: u32,240 /// None - setVariableMetadata is not sponsored241 /// Some(v) - setVariableMetadata is sponsored 242 /// if there is v block between txs243 pub sponsored_data_rate_limit: Option<BlockNumber>,244 pub token_limit: u32,245246 // Timeouts for item types in passed blocks247 pub sponsor_transfer_timeout: u32,248 pub owner_can_transfer: bool,249 pub owner_can_destroy: bool,250}251252impl<BlockNumber: Encode + Decode> Default for CollectionLimits<BlockNumber> {253 fn default() -> Self {254 Self { 255 account_token_ownership_limit: 10_000_000, 256 token_limit: u32::max_value(),257 sponsored_data_size: u32::MAX, 258 sponsored_data_rate_limit: None,259 sponsor_transfer_timeout: 14400,260 owner_can_transfer: true,261 owner_can_destroy: true262 }263 }264}265266#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]267#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]268pub struct ChainLimits {269 pub collection_numbers_limit: u32,270 pub account_token_ownership_limit: u32,271 pub collections_admins_limit: u64,272 pub custom_data_limit: u32,273274 // Timeouts for item types in passed blocks275 pub nft_sponsor_transfer_timeout: u32,276 pub fungible_sponsor_transfer_timeout: u32,277 pub refungible_sponsor_transfer_timeout: u32,278279 // Schema limits280 pub offchain_schema_limit: u32,281 pub variable_on_chain_schema_limit: u32,282 pub const_on_chain_schema_limit: u32,283}284285pub trait WeightInfo {286 fn create_collection() -> Weight;287 fn destroy_collection() -> Weight;288 fn add_to_white_list() -> Weight;289 fn remove_from_white_list() -> Weight;290 fn set_public_access_mode() -> Weight;291 fn set_mint_permission() -> Weight;292 fn change_collection_owner() -> Weight;293 fn add_collection_admin() -> Weight;294 fn remove_collection_admin() -> Weight;295 fn set_collection_sponsor() -> Weight;296 fn confirm_sponsorship() -> Weight;297 fn remove_collection_sponsor() -> Weight;298 fn create_item(s: usize) -> Weight;299 fn burn_item() -> Weight;300 fn transfer() -> Weight;301 fn approve() -> Weight;302 fn transfer_from() -> Weight;303 fn set_offchain_schema() -> Weight;304 fn set_const_on_chain_schema() -> Weight;305 fn set_variable_on_chain_schema() -> Weight;306 fn set_variable_meta_data() -> Weight;307 fn enable_contract_sponsoring() -> Weight;308 fn set_schema_version() -> Weight;309 fn set_chain_limits() -> Weight;310 fn set_contract_sponsoring_rate_limit() -> Weight;311 fn set_variable_meta_data_sponsoring_rate_limit() -> Weight;312 fn toggle_contract_white_list() -> Weight;313 fn add_to_contract_white_list() -> Weight;314 fn remove_from_contract_white_list() -> Weight;315 fn set_collection_limits() -> Weight;316}317318#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]319#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]320pub struct CreateNftData {321 pub const_data: Vec<u8>,322 pub variable_data: Vec<u8>,323}324325#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]326#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]327pub struct CreateFungibleData {328 pub value: u128,329}330331#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]332#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]333pub struct CreateReFungibleData {334 pub const_data: Vec<u8>,335 pub variable_data: Vec<u8>,336 pub pieces: u128,337}338339#[derive(Encode, Decode, Debug, Clone, PartialEq)]340#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]341pub enum CreateItemData {342 NFT(CreateNftData),343 Fungible(CreateFungibleData),344 ReFungible(CreateReFungibleData),345}346347impl CreateItemData {348 pub fn len(&self) -> usize {349 let len = match self {350 CreateItemData::NFT(data) => data.variable_data.len() + data.const_data.len(),351 CreateItemData::ReFungible(data) => data.variable_data.len() + data.const_data.len(),352 _ => 0353 };354 355 return len;356 }357}358359impl From<CreateNftData> for CreateItemData {360 fn from(item: CreateNftData) -> Self {361 CreateItemData::NFT(item)362 }363}364365impl From<CreateReFungibleData> for CreateItemData {366 fn from(item: CreateReFungibleData) -> Self {367 CreateItemData::ReFungible(item)368 }369}370371impl From<CreateFungibleData> for CreateItemData {372 fn from(item: CreateFungibleData) -> Self {373 CreateItemData::Fungible(item)374 }375}376377378decl_error! {379 /// Error for non-fungible-token module.380 pub enum Error for Module<T: Config> {381 /// Total collections bound exceeded.382 TotalCollectionsLimitExceeded,383 /// Decimal_points parameter must be lower than MAX_DECIMAL_POINTS constant, currently it is 30.384 CollectionDecimalPointLimitExceeded, 385 /// Collection name can not be longer than 63 char.386 CollectionNameLimitExceeded, 387 /// Collection description can not be longer than 255 char.388 CollectionDescriptionLimitExceeded, 389 /// Token prefix can not be longer than 15 char.390 CollectionTokenPrefixLimitExceeded,391 /// This collection does not exist.392 CollectionNotFound,393 /// Item not exists.394 TokenNotFound,395 /// Admin not found396 AdminNotFound,397 /// Arithmetic calculation overflow.398 NumOverflow, 399 /// Account already has admin role.400 AlreadyAdmin, 401 /// You do not own this collection.402 NoPermission,403 /// This address is not set as sponsor, use setCollectionSponsor first.404 ConfirmUnsetSponsorFail,405 /// Collection is not in mint mode.406 PublicMintingNotAllowed,407 /// Sender parameter and item owner must be equal.408 MustBeTokenOwner,409 /// Item balance not enough.410 TokenValueTooLow,411 /// Size of item is too large.412 NftSizeLimitExceeded,413 /// No approve found414 ApproveNotFound,415 /// Requested value more than approved.416 TokenValueNotEnough,417 /// Only approved addresses can call this method.418 ApproveRequired,419 /// Address is not in white list.420 AddresNotInWhiteList,421 /// Number of collection admins bound exceeded.422 CollectionAdminsLimitExceeded,423 /// Owned tokens by a single address bound exceeded.424 AddressOwnershipLimitExceeded,425 /// Length of items properties must be greater than 0.426 EmptyArgument,427 /// const_data exceeded data limit.428 TokenConstDataLimitExceeded,429 /// variable_data exceeded data limit.430 TokenVariableDataLimitExceeded,431 /// Not NFT item data used to mint in NFT collection.432 NotNftDataUsedToMintNftCollectionToken,433 /// Not Fungible item data used to mint in Fungible collection.434 NotFungibleDataUsedToMintFungibleCollectionToken,435 /// Not Re Fungible item data used to mint in Re Fungible collection.436 NotReFungibleDataUsedToMintReFungibleCollectionToken,437 /// Unexpected collection type.438 UnexpectedCollectionType,439 /// Can't store metadata in fungible tokens.440 CantStoreMetadataInFungibleTokens,441 /// Collection token limit exceeded442 CollectionTokenLimitExceeded,443 /// Account token limit exceeded per collection444 AccountTokenLimitExceeded,445 /// Collection limit bounds per collection exceeded446 CollectionLimitBoundsExceeded,447 /// Tried to enable permissions which are only permitted to be disabled448 OwnerPermissionsCantBeReverted,449 /// Schema data size limit bound exceeded450 SchemaDataLimitExceeded,451 /// Maximum refungibility exceeded452 WrongRefungiblePieces,453 /// createRefungible should be called with one owner454 BadCreateRefungibleCall,455 }456}457458pub trait Config: system::Config + Sized + pallet_transaction_payment::Config + pallet_contracts::Config {459 type Event: From<Event<Self>> + Into<<Self as system::Config>::Event>;460461 /// Weight information for extrinsics in this pallet.462 type WeightInfo: WeightInfo;463464 type Currency: Currency<Self::AccountId>;465 type CollectionCreationPrice: Get<<<Self as Config>::Currency as Currency<Self::AccountId>>::Balance>;466 type TreasuryAccountId: Get<Self::AccountId>;467}468469#[cfg(feature = "runtime-benchmarks")]470mod benchmarking;471472// #endregion473474// # Used definitions475//476// ## User control levels477//478// chain-controlled - key is uncontrolled by user479// i.e autoincrementing index480// can use non-cryptographic hash481// real - key is controlled by user482// but it is hard to generate enough colliding values, i.e owner of signed txs483// can use non-cryptographic hash484// controlled - key is completly controlled by users485// i.e maps with mutable keys486// should use cryptographic hash487//488// ## User control level downgrade reasons489//490// ?1 - chain-controlled -> controlled491// collections/tokens can be destroyed, resulting in massive holes492// ?2 - chain-controlled -> controlled493// same as ?1, but can be only added, resulting in easier exploitation494// ?3 - real -> controlled495// no confirmation required, so addresses can be easily generated496decl_storage! {497 trait Store for Module<T: Config> as Nft {498499 //#region Private members500 /// Id of next collection501 CreatedCollectionCount: u32;502 /// Used for migrations503 ChainVersion: u64;504 /// Id of last collection token505 /// Collection id (controlled?1)506 ItemListIndex: map hasher(blake2_128_concat) CollectionId => TokenId;507 //#endregion508509 //#region Chain limits struct510 pub ChainLimit get(fn chain_limit) config(): ChainLimits;511 //#endregion512513 //#region Bound counters514 /// Amount of collections destroyed, used for total amount tracking with515 /// CreatedCollectionCount516 DestroyedCollectionCount: u32;517 /// Total amount of account owned tokens (NFTs + RFTs + unique fungibles)518 /// Account id (real)519 pub AccountItemCount get(fn account_item_count): map hasher(twox_64_concat) T::AccountId => u32;520 //#endregion521522 //#region Basic collections523 /// Collection info524 /// Collection id (controlled?1)525 pub CollectionById get(fn collection_id) config(): map hasher(blake2_128_concat) CollectionId => Option<Collection<T>> = None;526 /// List of collection admins527 /// Collection id (controlled?2)528 pub AdminList get(fn admin_list_collection): map hasher(blake2_128_concat) CollectionId => Vec<T::AccountId>;529 /// Whitelisted collection users530 /// Collection id (controlled?2), user id (controlled?3)531 pub WhiteList get(fn white_list): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) T::AccountId => bool;532 //#endregion533534 /// How many of collection items user have535 /// Collection id (controlled?2), account id (real)536 pub Balance get(fn balance_count): double_map hasher(blake2_128_concat) CollectionId, hasher(twox_64_concat) T::AccountId => u128;537538 /// Amount of items which spender can transfer out of owners account (via transferFrom)539 /// Collection id (controlled?2), (token id (controlled ?2) + owner account id (real) + spender account id (controlled?3))540 /// TODO: Off chain worker should remove from this map when token gets removed541 pub Allowances get(fn approved): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) (TokenId, T::AccountId, T::AccountId) => u128;542543 //#region Item collections544 /// Collection id (controlled?2), token id (controlled?1)545 pub NftItemList get(fn nft_item_id) config(): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<NftItemType<T::AccountId>>;546 /// Collection id (controlled?2), owner (controlled?2)547 pub FungibleItemList get(fn fungible_item_id) config(): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) T::AccountId => FungibleItemType;548 /// Collection id (controlled?2), token id (controlled?1)549 pub ReFungibleItemList get(fn refungible_item_id) config(): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<ReFungibleItemType<T::AccountId>>;550 //#endregion551552 //#region Index list553 /// Collection id (controlled?2), tokens owner (controlled?2)554 pub AddressTokens get(fn address_tokens): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) T::AccountId => Vec<TokenId>;555 //#endregion556557 //#region Tokens transfer rate limit baskets558 /// (Collection id (controlled?2), who created (real))559 /// TODO: Off chain worker should remove from this map when collection gets removed560 pub CreateItemBasket get(fn create_item_basket): map hasher(blake2_128_concat) (CollectionId, T::AccountId) => T::BlockNumber;561 /// Collection id (controlled?2), token id (controlled?2)562 pub NftTransferBasket get(fn nft_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => T::BlockNumber;563 /// Collection id (controlled?2), owning user (real)564 pub FungibleTransferBasket get(fn fungible_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(twox_64_concat) T::AccountId => T::BlockNumber;565 /// Collection id (controlled?2), token id (controlled?2)566 pub ReFungibleTransferBasket get(fn refungible_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => T::BlockNumber;567 //#endregion568569 /// Variable metadata sponsoring570 /// Collection id (controlled?2), token id (controlled?2)571 pub VariableMetaDataBasket get(fn variable_meta_data_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<T::BlockNumber> = None;572 573 //#region Contract Sponsorship and Ownership574 /// Contract address (real)575 pub ContractOwner get(fn contract_owner): map hasher(twox_64_concat) T::AccountId => Option<T::AccountId>;576 /// Contract address (real)577 pub ContractSelfSponsoring get(fn contract_self_sponsoring): map hasher(twox_64_concat) T::AccountId => bool;578 /// (Contract address(real), caller (real))579 pub ContractSponsorBasket get(fn contract_sponsor_basket): map hasher(twox_64_concat) (T::AccountId, T::AccountId) => T::BlockNumber;580 /// Contract address (real)581 pub ContractSponsoringRateLimit get(fn contract_sponsoring_rate_limit): map hasher(twox_64_concat) T::AccountId => T::BlockNumber;582 /// Contract address (real)583 pub ContractWhiteListEnabled get(fn contract_white_list_enabled): map hasher(twox_64_concat) T::AccountId => bool; 584 /// Contract address (real) => Whitelisted user (controlled?3)585 pub ContractWhiteList get(fn contract_white_list): double_map hasher(twox_64_concat) T::AccountId, hasher(blake2_128_concat) T::AccountId => bool; 586 //#endregion587 }588 add_extra_genesis {589 build(|config: &GenesisConfig<T>| {590 // Modification of storage591 for (_num, _c) in &config.collection_id {592 <Module<T>>::init_collection(_c);593 }594595 for (_num, _c, _i) in &config.nft_item_id {596 <Module<T>>::init_nft_token(*_c, _i);597 }598599 for (collection_id, account_id, fungible_item) in &config.fungible_item_id {600 <Module<T>>::init_fungible_token(*collection_id, account_id, fungible_item);601 }602603 for (_num, _c, _i) in &config.refungible_item_id {604 <Module<T>>::init_refungible_token(*_c, _i);605 }606 })607 }608}609610decl_event!(611 pub enum Event<T>612 where613 AccountId = <T as system::Config>::AccountId,614 {615 /// New collection was created616 /// 617 /// # Arguments618 /// 619 /// * collection_id: Globally unique identifier of newly created collection.620 /// 621 /// * mode: [CollectionMode] converted into u8.622 /// 623 /// * account_id: Collection owner.624 CollectionCreated(CollectionId, u8, AccountId),625626 /// New item was created.627 /// 628 /// # Arguments629 /// 630 /// * collection_id: Id of the collection where item was created.631 /// 632 /// * item_id: Id of an item. Unique within the collection.633 ///634 /// * recipient: Owner of newly created item 635 ItemCreated(CollectionId, TokenId, AccountId),636637 /// Collection item was burned.638 /// 639 /// # Arguments640 /// 641 /// collection_id.642 /// 643 /// item_id: Identifier of burned NFT.644 ItemDestroyed(CollectionId, TokenId),645646 /// Item was transferred647 ///648 /// * collection_id: Id of collection to which item is belong649 ///650 /// * item_id: Id of an item651 ///652 /// * sender: Original owner of item653 ///654 /// * recipient: New owner of item655 ///656 /// * amount: Always 1 for NFT657 Transfer(CollectionId, TokenId, AccountId, AccountId, u128),658659 /// * collection_id660 ///661 /// * item_id662 ///663 /// * sender664 ///665 /// * spender666 ///667 /// * amount668 Approved(CollectionId, TokenId, AccountId, AccountId, u128),669 }670);671672decl_module! {673 pub struct Module<T: Config> for enum Call 674 where 675 origin: T::Origin676 {677 fn deposit_event() = default;678 type Error = Error<T>;679680 fn on_initialize(now: T::BlockNumber) -> Weight {681 0682 }683684 /// This method creates a Collection of NFTs. Each Token may have multiple properties encoded as an array of bytes of certain length. The initial owner and admin of the collection are set to the address that signed the transaction. Both addresses can be changed later.685 /// 686 /// # Permissions687 /// 688 /// * Anyone.689 /// 690 /// # Arguments691 /// 692 /// * collection_name: UTF-16 string with collection name (limit 64 characters), will be stored as zero-terminated.693 /// 694 /// * collection_description: UTF-16 string with collection description (limit 256 characters), will be stored as zero-terminated.695 /// 696 /// * token_prefix: UTF-8 string with token prefix.697 /// 698 /// * mode: [CollectionMode] collection type and type dependent data.699 // returns collection ID700 #[weight = <T as Config>::WeightInfo::create_collection()]701 #[transactional]702 pub fn create_collection(origin,703 collection_name: Vec<u16>,704 collection_description: Vec<u16>,705 token_prefix: Vec<u8>,706 mode: CollectionMode) -> DispatchResult {707708 // Anyone can create a collection709 let who = ensure_signed(origin)?;710711 // Take a (non-refundable) deposit of collection creation712 let mut imbalance = <<<T as Config>::Currency as Currency<T::AccountId>>::PositiveImbalance>::zero();713 imbalance.subsume(<<T as Config>::Currency as Currency<T::AccountId>>::deposit_creating(714 &T::TreasuryAccountId::get(),715 T::CollectionCreationPrice::get(),716 ));717 <T as Config>::Currency::settle(718 &who,719 imbalance,720 WithdrawReasons::TRANSFER,721 ExistenceRequirement::KeepAlive,722 ).map_err(|_| Error::<T>::NoPermission)?;723724 let decimal_points = match mode {725 CollectionMode::Fungible(points) => points,726 _ => 0727 };728729 let chain_limit = ChainLimit::get();730731 let created_count = CreatedCollectionCount::get();732 let destroyed_count = DestroyedCollectionCount::get();733734 // bound Total number of collections735 ensure!(created_count - destroyed_count < chain_limit.collection_numbers_limit, Error::<T>::TotalCollectionsLimitExceeded);736737 // check params738 ensure!(decimal_points <= MAX_DECIMAL_POINTS, Error::<T>::CollectionDecimalPointLimitExceeded);739 ensure!(collection_name.len() <= 64, Error::<T>::CollectionNameLimitExceeded);740 ensure!(collection_description.len() <= 256, Error::<T>::CollectionDescriptionLimitExceeded);741 ensure!(token_prefix.len() <= 16, Error::<T>::CollectionTokenPrefixLimitExceeded);742743 // Generate next collection ID744 let next_id = created_count745 .checked_add(1)746 .ok_or(Error::<T>::NumOverflow)?;747748 CreatedCollectionCount::put(next_id);749750 let limits = CollectionLimits {751 sponsored_data_size: chain_limit.custom_data_limit,752 ..Default::default()753 };754755 // Create new collection756 let new_collection = Collection {757 owner: who.clone(),758 name: collection_name,759 mode: mode.clone(),760 mint_mode: false,761 access: AccessMode::Normal,762 description: collection_description,763 decimal_points: decimal_points,764 token_prefix: token_prefix,765 offchain_schema: Vec::new(),766 schema_version: SchemaVersion::ImageURL,767 sponsorship: SponsorshipState::Disabled,768 variable_on_chain_schema: Vec::new(),769 const_on_chain_schema: Vec::new(),770 limits,771 };772773 // Add new collection to map774 <CollectionById<T>>::insert(next_id, new_collection);775776 // call event777 Self::deposit_event(RawEvent::CollectionCreated(next_id, mode.into(), who.clone()));778779 Ok(())780 }781782 /// **DANGEROUS**: Destroys collection and all NFTs within this collection. Users irrecoverably lose their assets and may lose real money.783 /// 784 /// # Permissions785 /// 786 /// * Collection Owner.787 /// 788 /// # Arguments789 /// 790 /// * collection_id: collection to destroy.791 #[weight = <T as Config>::WeightInfo::destroy_collection()]792 #[transactional]793 pub fn destroy_collection(origin, collection_id: CollectionId) -> DispatchResult {794795 let sender = ensure_signed(origin)?;796 let collection = Self::get_collection(collection_id)?;797 Self::check_owner_permissions(&collection, sender)?;798 if !collection.limits.owner_can_destroy {799 fail!(Error::<T>::NoPermission);800 }801802 <AddressTokens<T>>::remove_prefix(collection_id);803 <Allowances<T>>::remove_prefix(collection_id);804 <Balance<T>>::remove_prefix(collection_id);805 <ItemListIndex>::remove(collection_id);806 <AdminList<T>>::remove(collection_id);807 <CollectionById<T>>::remove(collection_id);808 <WhiteList<T>>::remove_prefix(collection_id);809810 <NftItemList<T>>::remove_prefix(collection_id);811 <FungibleItemList<T>>::remove_prefix(collection_id);812 <ReFungibleItemList<T>>::remove_prefix(collection_id);813814 <NftTransferBasket<T>>::remove_prefix(collection_id);815 <FungibleTransferBasket<T>>::remove_prefix(collection_id);816 <ReFungibleTransferBasket<T>>::remove_prefix(collection_id);817818 <VariableMetaDataBasket<T>>::remove_prefix(collection_id);819820 DestroyedCollectionCount::put(DestroyedCollectionCount::get()821 .checked_add(1)822 .ok_or(Error::<T>::NumOverflow)?);823824 Ok(())825 }826827 /// Add an address to white list.828 /// 829 /// # Permissions830 /// 831 /// * Collection Owner832 /// * Collection Admin833 /// 834 /// # Arguments835 /// 836 /// * collection_id.837 /// 838 /// * address.839 #[weight = <T as Config>::WeightInfo::add_to_white_list()]840 #[transactional]841 pub fn add_to_white_list(origin, collection_id: CollectionId, address: T::AccountId) -> DispatchResult{842843 let sender = ensure_signed(origin)?;844 let collection = Self::get_collection(collection_id)?;845 Self::check_owner_or_admin_permissions(&collection, sender)?;846847 <WhiteList<T>>::insert(collection_id, address, true);848 849 Ok(())850 }851852 /// Remove an address from white list.853 /// 854 /// # Permissions855 /// 856 /// * Collection Owner857 /// * Collection Admin858 /// 859 /// # Arguments860 /// 861 /// * collection_id.862 /// 863 /// * address.864 #[weight = <T as Config>::WeightInfo::remove_from_white_list()]865 #[transactional]866 pub fn remove_from_white_list(origin, collection_id: CollectionId, address: T::AccountId) -> DispatchResult{867868 let sender = ensure_signed(origin)?;869 let collection = Self::get_collection(collection_id)?;870 Self::check_owner_or_admin_permissions(&collection, sender)?;871872 <WhiteList<T>>::remove(collection_id, address);873874 Ok(())875 }876877 /// Toggle between normal and white list access for the methods with access for `Anyone`.878 /// 879 /// # Permissions880 /// 881 /// * Collection Owner.882 /// 883 /// # Arguments884 /// 885 /// * collection_id.886 /// 887 /// * mode: [AccessMode]888 #[weight = <T as Config>::WeightInfo::set_public_access_mode()]889 #[transactional]890 pub fn set_public_access_mode(origin, collection_id: CollectionId, mode: AccessMode) -> DispatchResult891 {892 let sender = ensure_signed(origin)?;893894 let mut target_collection = Self::get_collection(collection_id)?;895 Self::check_owner_permissions(&target_collection, sender)?;896 target_collection.access = mode;897 Self::save_collection(target_collection);898899 Ok(())900 }901902 /// Allows Anyone to create tokens if:903 /// * White List is enabled, and904 /// * Address is added to white list, and905 /// * This method was called with True parameter906 /// 907 /// # Permissions908 /// * Collection Owner909 ///910 /// # Arguments911 /// 912 /// * collection_id.913 /// 914 /// * mint_permission: Boolean parameter. If True, allows minting to Anyone with conditions above.915 #[weight = <T as Config>::WeightInfo::set_mint_permission()]916 #[transactional]917 pub fn set_mint_permission(origin, collection_id: CollectionId, mint_permission: bool) -> DispatchResult918 {919 let sender = ensure_signed(origin)?;920921 let mut target_collection = Self::get_collection(collection_id)?;922 Self::check_owner_permissions(&target_collection, sender)?;923 target_collection.mint_mode = mint_permission;924 Self::save_collection(target_collection);925926 Ok(())927 }928929 /// Change the owner of the collection.930 /// 931 /// # Permissions932 /// 933 /// * Collection Owner.934 /// 935 /// # Arguments936 /// 937 /// * collection_id.938 /// 939 /// * new_owner.940 #[weight = <T as Config>::WeightInfo::change_collection_owner()]941 #[transactional]942 pub fn change_collection_owner(origin, collection_id: CollectionId, new_owner: T::AccountId) -> DispatchResult {943944 let sender = ensure_signed(origin)?;945 let mut target_collection = Self::get_collection(collection_id)?;946 Self::check_owner_permissions(&target_collection, sender)?;947 target_collection.owner = new_owner;948 Self::save_collection(target_collection);949950 Ok(())951 }952953 /// Adds an admin of the Collection.954 /// NFT Collection can be controlled by multiple admin addresses (some which can also be servers, for example). Admins can issue and burn NFTs, as well as add and remove other admins, but cannot change NFT or Collection ownership. 955 /// 956 /// # Permissions957 /// 958 /// * Collection Owner.959 /// * Collection Admin.960 /// 961 /// # Arguments962 /// 963 /// * collection_id: ID of the Collection to add admin for.964 /// 965 /// * new_admin_id: Address of new admin to add.966 #[weight = <T as Config>::WeightInfo::add_collection_admin()]967 #[transactional]968 pub fn add_collection_admin(origin, collection_id: CollectionId, new_admin_id: T::AccountId) -> DispatchResult {969970 let sender = ensure_signed(origin)?;971 let collection = Self::get_collection(collection_id)?;972 Self::check_owner_or_admin_permissions(&collection, sender)?;973 let mut admin_arr = <AdminList<T>>::get(collection_id);974975 match admin_arr.binary_search(&new_admin_id) {976 Ok(_) => {},977 Err(idx) => {978 let limits = ChainLimit::get();979 ensure!(admin_arr.len() < limits.collections_admins_limit as usize, Error::<T>::CollectionAdminsLimitExceeded);980 admin_arr.insert(idx, new_admin_id);981 <AdminList<T>>::insert(collection_id, admin_arr);982 }983 }984 Ok(())985 }986987 /// Remove admin address of the Collection. An admin address can remove itself. List of admins may become empty, in which case only Collection Owner will be able to add an Admin.988 ///989 /// # Permissions990 /// 991 /// * Collection Owner.992 /// * Collection Admin.993 /// 994 /// # Arguments995 /// 996 /// * collection_id: ID of the Collection to remove admin for.997 /// 998 /// * account_id: Address of admin to remove.999 #[weight = <T as Config>::WeightInfo::remove_collection_admin()]1000 #[transactional]1001 pub fn remove_collection_admin(origin, collection_id: CollectionId, account_id: T::AccountId) -> DispatchResult {10021003 let sender = ensure_signed(origin)?;1004 let collection = Self::get_collection(collection_id)?;1005 Self::check_owner_or_admin_permissions(&collection, sender)?;1006 let mut admin_arr = <AdminList<T>>::get(collection_id);10071008 match admin_arr.binary_search(&account_id) {1009 Ok(idx) => {1010 admin_arr.remove(idx);1011 <AdminList<T>>::insert(collection_id, admin_arr);1012 },1013 Err(_) => {}1014 }1015 Ok(())1016 }10171018 /// # Permissions1019 /// 1020 /// * Collection Owner1021 /// 1022 /// # Arguments1023 /// 1024 /// * collection_id.1025 /// 1026 /// * new_sponsor.1027 #[weight = <T as Config>::WeightInfo::set_collection_sponsor()]1028 #[transactional]1029 pub fn set_collection_sponsor(origin, collection_id: CollectionId, new_sponsor: T::AccountId) -> DispatchResult {10301031 let sender = ensure_signed(origin)?;1032 let mut target_collection = Self::get_collection(collection_id)?;1033 Self::check_owner_permissions(&target_collection, sender)?;10341035 target_collection.sponsorship = SponsorshipState::Unconfirmed(new_sponsor);1036 Self::save_collection(target_collection);10371038 Ok(())1039 }10401041 /// # Permissions1042 /// 1043 /// * Sponsor.1044 /// 1045 /// # Arguments1046 /// 1047 /// * collection_id.1048 #[weight = <T as Config>::WeightInfo::confirm_sponsorship()]1049 #[transactional]1050 pub fn confirm_sponsorship(origin, collection_id: CollectionId) -> DispatchResult {10511052 let sender = ensure_signed(origin)?;10531054 let mut target_collection = Self::get_collection(collection_id)?;1055 ensure!(1056 target_collection.sponsorship.pending_sponsor() == Some(&sender),1057 Error::<T>::ConfirmUnsetSponsorFail1058 );10591060 target_collection.sponsorship = SponsorshipState::Confirmed(sender);1061 Self::save_collection(target_collection);10621063 Ok(())1064 }10651066 /// Switch back to pay-per-own-transaction model.1067 ///1068 /// # Permissions1069 ///1070 /// * Collection owner.1071 /// 1072 /// # Arguments1073 /// 1074 /// * collection_id.1075 #[weight = <T as Config>::WeightInfo::remove_collection_sponsor()]1076 #[transactional]1077 pub fn remove_collection_sponsor(origin, collection_id: CollectionId) -> DispatchResult {10781079 let sender = ensure_signed(origin)?;10801081 let mut target_collection = Self::get_collection(collection_id)?;1082 Self::check_owner_permissions(&target_collection, sender)?;10831084 target_collection.sponsorship = SponsorshipState::Disabled;1085 Self::save_collection(target_collection);10861087 Ok(())1088 }10891090 /// This method creates a concrete instance of NFT Collection created with CreateCollection method.1091 /// 1092 /// # Permissions1093 /// 1094 /// * Collection Owner.1095 /// * Collection Admin.1096 /// * Anyone if1097 /// * White List is enabled, and1098 /// * Address is added to white list, and1099 /// * MintPermission is enabled (see SetMintPermission method)1100 /// 1101 /// # Arguments1102 /// 1103 /// * collection_id: ID of the collection.1104 /// 1105 /// * owner: Address, initial owner of the NFT.1106 ///1107 /// * data: Token data to store on chain.1108 // #[weight =1109 // (130_000_000 as Weight)1110 // .saturating_add((2135 as Weight).saturating_mul((properties.len() as u64) as Weight))1111 // .saturating_add(RocksDbWeight::get().reads(10 as Weight))1112 // .saturating_add(RocksDbWeight::get().writes(8 as Weight))]11131114 #[weight = <T as Config>::WeightInfo::create_item(data.len())]1115 #[transactional]1116 pub fn create_item(origin, collection_id: CollectionId, owner: T::AccountId, data: CreateItemData) -> DispatchResult {1117 let sender = ensure_signed(origin)?;1118 Self::create_item_internal(sender, collection_id, owner, data)1119 }11201121 /// This method creates multiple items in a collection created with CreateCollection method.1122 /// 1123 /// # Permissions1124 /// 1125 /// * Collection Owner.1126 /// * Collection Admin.1127 /// * Anyone if1128 /// * White List is enabled, and1129 /// * Address is added to white list, and1130 /// * MintPermission is enabled (see SetMintPermission method)1131 /// 1132 /// # Arguments1133 /// 1134 /// * collection_id: ID of the collection.1135 /// 1136 /// * itemsData: Array items properties. Each property is an array of bytes itself, see [create_item].1137 /// 1138 /// * owner: Address, initial owner of the NFT.1139 #[weight = <T as Config>::WeightInfo::create_item(items_data.into_iter()1140 .map(|data| { data.len() })1141 .sum())]1142 #[transactional]1143 pub fn create_multiple_items(origin, collection_id: CollectionId, owner: T::AccountId, items_data: Vec<CreateItemData>) -> DispatchResult {11441145 ensure!(items_data.len() > 0, Error::<T>::EmptyArgument);1146 let sender = ensure_signed(origin)?;11471148 let target_collection = Self::get_collection(collection_id)?;11491150 Self::can_create_items_in_collection(&target_collection, &sender, &owner, items_data.len() as u32)?;11511152 for data in &items_data {1153 Self::validate_create_item_args(&target_collection, data)?;1154 }1155 for data in &items_data {1156 Self::create_item_no_validation(&target_collection, owner.clone(), data.clone())?;1157 }11581159 Ok(())1160 }11611162 /// Destroys a concrete instance of NFT.1163 /// 1164 /// # Permissions1165 /// 1166 /// * Collection Owner.1167 /// * Collection Admin.1168 /// * Current NFT Owner.1169 /// 1170 /// # Arguments1171 /// 1172 /// * collection_id: ID of the collection.1173 /// 1174 /// * item_id: ID of NFT to burn.1175 #[weight = <T as Config>::WeightInfo::burn_item()]1176 #[transactional]1177 pub fn burn_item(origin, collection_id: CollectionId, item_id: TokenId, value: u128) -> DispatchResult {11781179 let sender = ensure_signed(origin)?;11801181 // Transfer permissions check1182 let target_collection = Self::get_collection(collection_id)?;1183 ensure!(1184 Self::is_item_owner(sender.clone(), &target_collection, item_id) ||1185 (1186 target_collection.limits.owner_can_transfer &&1187 Self::is_owner_or_admin_permissions(&target_collection, sender.clone())1188 ),1189 Error::<T>::NoPermission1190 );11911192 if target_collection.access == AccessMode::WhiteList {1193 Self::check_white_list(&target_collection, &sender)?;1194 }11951196 match target_collection.mode1197 {1198 CollectionMode::NFT => Self::burn_nft_item(&target_collection, item_id)?,1199 CollectionMode::Fungible(_) => Self::burn_fungible_item(&sender, &target_collection, value)?,1200 CollectionMode::ReFungible => Self::burn_refungible_item(&target_collection, item_id, &sender)?,1201 _ => ()1202 };12031204 // call event1205 Self::deposit_event(RawEvent::ItemDestroyed(target_collection.id, item_id));12061207 Ok(())1208 }12091210 /// Change ownership of the token.1211 /// 1212 /// # Permissions1213 /// 1214 /// * Collection Owner1215 /// * Collection Admin1216 /// * Current NFT owner1217 ///1218 /// # Arguments1219 /// 1220 /// * recipient: Address of token recipient.1221 /// 1222 /// * collection_id.1223 /// 1224 /// * item_id: ID of the item1225 /// * Non-Fungible Mode: Required.1226 /// * Fungible Mode: Ignored.1227 /// * Re-Fungible Mode: Required.1228 /// 1229 /// * value: Amount to transfer.1230 /// * Non-Fungible Mode: Ignored1231 /// * Fungible Mode: Must specify transferred amount1232 /// * Re-Fungible Mode: Must specify transferred portion (between 0 and 1)1233 #[weight = <T as Config>::WeightInfo::transfer()]1234 #[transactional]1235 pub fn transfer(origin, recipient: T::AccountId, collection_id: CollectionId, item_id: TokenId, value: u128) -> DispatchResult {1236 let sender = ensure_signed(origin)?;1237 let collection = Self::get_collection(collection_id)?;12381239 Self::transfer_internal(sender, recipient, &collection, item_id, value)1240 }12411242 /// Set, change, or remove approved address to transfer the ownership of the NFT.1243 /// 1244 /// # Permissions1245 /// 1246 /// * Collection Owner1247 /// * Collection Admin1248 /// * Current NFT owner1249 /// 1250 /// # Arguments1251 /// 1252 /// * approved: Address that is approved to transfer this NFT or zero (if needed to remove approval).1253 /// 1254 /// * collection_id.1255 /// 1256 /// * item_id: ID of the item.1257 #[weight = <T as Config>::WeightInfo::approve()]1258 #[transactional]1259 pub fn approve(origin, spender: T::AccountId, collection_id: CollectionId, item_id: TokenId, amount: u128) -> DispatchResult {12601261 let sender = ensure_signed(origin)?;1262 let target_collection = Self::get_collection(collection_id)?;12631264 Self::token_exists(&target_collection, item_id)?;12651266 // Transfer permissions check1267 let bypasses_limits = target_collection.limits.owner_can_transfer &&1268 Self::is_owner_or_admin_permissions(1269 &target_collection,1270 sender.clone(),1271 );12721273 let allowance_limit = if bypasses_limits {1274 None1275 } else if let Some(amount) = Self::owned_amount(1276 sender.clone(),1277 &target_collection,1278 item_id,1279 ) {1280 Some(amount)1281 } else {1282 fail!(Error::<T>::NoPermission);1283 };12841285 if target_collection.access == AccessMode::WhiteList {1286 Self::check_white_list(&target_collection, &sender)?;1287 Self::check_white_list(&target_collection, &spender)?;1288 }12891290 let allowance: u128 = amount1291 .checked_add(<Allowances<T>>::get(collection_id, (item_id, &sender, &spender)))1292 .ok_or(Error::<T>::NumOverflow)?;1293 if let Some(limit) = allowance_limit {1294 ensure!(limit >= allowance, Error::<T>::TokenValueTooLow);1295 }1296 <Allowances<T>>::insert(collection_id, (item_id, sender.clone(), spender.clone()), allowance);12971298 Self::deposit_event(RawEvent::Approved(target_collection.id, item_id, sender, spender, allowance));1299 Ok(())1300 }1301 1302 /// Change ownership of a NFT on behalf of the owner. See Approve method for additional information. After this method executes, the approval is removed so that the approved address will not be able to transfer this NFT again from this owner.1303 /// 1304 /// # Permissions1305 /// * Collection Owner1306 /// * Collection Admin1307 /// * Current NFT owner1308 /// * Address approved by current NFT owner1309 /// 1310 /// # Arguments1311 /// 1312 /// * from: Address that owns token.1313 /// 1314 /// * recipient: Address of token recipient.1315 /// 1316 /// * collection_id.1317 /// 1318 /// * item_id: ID of the item.1319 /// 1320 /// * value: Amount to transfer.1321 #[weight = <T as Config>::WeightInfo::transfer_from()]1322 #[transactional]1323 pub fn transfer_from(origin, from: T::AccountId, recipient: T::AccountId, collection_id: CollectionId, item_id: TokenId, value: u128 ) -> DispatchResult {13241325 let sender = ensure_signed(origin)?;1326 let target_collection = Self::get_collection(collection_id)?;13271328 // Check approval1329 let approval: u128 = <Allowances<T>>::get(collection_id, (item_id, &from, &sender));13301331 // Limits check1332 Self::is_correct_transfer(&target_collection, &recipient)?;13331334 // Transfer permissions check 1335 ensure!(1336 approval >= value || 1337 (1338 target_collection.limits.owner_can_transfer &&1339 Self::is_owner_or_admin_permissions(&target_collection, sender.clone())1340 ),1341 Error::<T>::NoPermission1342 );13431344 if target_collection.access == AccessMode::WhiteList {1345 Self::check_white_list(&target_collection, &sender)?;1346 Self::check_white_list(&target_collection, &recipient)?;1347 }13481349 // Reduce approval by transferred amount or remove if remaining approval drops to 01350 if approval.saturating_sub(value) > 0 {1351 <Allowances<T>>::insert(collection_id, (item_id, &from, &sender), approval - value);1352 }1353 else {1354 <Allowances<T>>::remove(collection_id, (item_id, &from, &sender));1355 }13561357 match target_collection.mode1358 {1359 CollectionMode::NFT => Self::transfer_nft(&target_collection, item_id, from.clone(), recipient.clone())?,1360 CollectionMode::Fungible(_) => Self::transfer_fungible(&target_collection, value, &from, &recipient)?,1361 CollectionMode::ReFungible => Self::transfer_refungible(&target_collection, item_id, value, from.clone(), recipient.clone())?,1362 _ => ()1363 };13641365 Self::deposit_event(RawEvent::Transfer(target_collection.id, item_id, from, recipient, value));1366 Ok(())1367 }13681369 // #[weight = 0]1370 // pub fn safe_transfer_from(origin, collection_id: CollectionId, item_id: TokenId, new_owner: T::AccountId) -> DispatchResult {13711372 // // let no_perm_mes = "You do not have permissions to modify this collection";1373 // // ensure!(<ApprovedList<T>>::contains_key((collection_id, item_id)), no_perm_mes);1374 // // let list_itm = <ApprovedList<T>>::get((collection_id, item_id));1375 // // ensure!(list_itm.contains(&new_owner.clone()), no_perm_mes);13761377 // // // on_nft_received call13781379 // // Self::transfer(origin, collection_id, item_id, new_owner)?;13801381 // Ok(())1382 // }13831384 /// Set off-chain data schema.1385 /// 1386 /// # Permissions1387 /// 1388 /// * Collection Owner1389 /// * Collection Admin1390 /// 1391 /// # Arguments1392 /// 1393 /// * collection_id.1394 /// 1395 /// * schema: String representing the offchain data schema.1396 #[weight = <T as Config>::WeightInfo::set_variable_meta_data()]1397 #[transactional]1398 pub fn set_variable_meta_data (1399 origin,1400 collection_id: CollectionId,1401 item_id: TokenId,1402 data: Vec<u8>1403 ) -> DispatchResult {1404 let sender = ensure_signed(origin)?;1405 1406 let target_collection = Self::get_collection(collection_id)?;1407 Self::token_exists(&target_collection, item_id)?;14081409 ensure!(ChainLimit::get().custom_data_limit >= data.len() as u32, Error::<T>::TokenVariableDataLimitExceeded);14101411 // Modify permissions check1412 ensure!(Self::is_item_owner(sender.clone(), &target_collection, item_id) ||1413 Self::is_owner_or_admin_permissions(&target_collection, sender.clone()),1414 Error::<T>::NoPermission);14151416 match target_collection.mode1417 {1418 CollectionMode::NFT => Self::set_nft_variable_data(&target_collection, item_id, data)?,1419 CollectionMode::ReFungible => Self::set_re_fungible_variable_data(&target_collection, item_id, data)?,1420 CollectionMode::Fungible(_) => fail!(Error::<T>::CantStoreMetadataInFungibleTokens),1421 _ => fail!(Error::<T>::UnexpectedCollectionType)1422 };14231424 Ok(())1425 }1426 1427 /// Set schema standard1428 /// ImageURL1429 /// Unique1430 /// 1431 /// # Permissions1432 /// 1433 /// * Collection Owner1434 /// * Collection Admin1435 /// 1436 /// # Arguments1437 /// 1438 /// * collection_id.1439 /// 1440 /// * schema: SchemaVersion: enum1441 #[weight = <T as Config>::WeightInfo::set_schema_version()]1442 #[transactional]1443 pub fn set_schema_version(1444 origin,1445 collection_id: CollectionId,1446 version: SchemaVersion1447 ) -> DispatchResult {1448 let sender = ensure_signed(origin)?;1449 let mut target_collection = Self::get_collection(collection_id)?;1450 Self::check_owner_or_admin_permissions(&target_collection, sender.clone())?;1451 target_collection.schema_version = version;1452 Self::save_collection(target_collection);14531454 Ok(())1455 }14561457 /// Set off-chain data schema.1458 /// 1459 /// # Permissions1460 /// 1461 /// * Collection Owner1462 /// * Collection Admin1463 /// 1464 /// # Arguments1465 /// 1466 /// * collection_id.1467 /// 1468 /// * schema: String representing the offchain data schema.1469 #[weight = <T as Config>::WeightInfo::set_offchain_schema()]1470 #[transactional]1471 pub fn set_offchain_schema(1472 origin,1473 collection_id: CollectionId,1474 schema: Vec<u8>1475 ) -> DispatchResult {1476 let sender = ensure_signed(origin)?;1477 let mut target_collection = Self::get_collection(collection_id)?;1478 Self::check_owner_or_admin_permissions(&target_collection, sender.clone())?;14791480 // check schema limit1481 ensure!(schema.len() as u32 <= ChainLimit::get().offchain_schema_limit, "");14821483 target_collection.offchain_schema = schema;1484 Self::save_collection(target_collection);14851486 Ok(())1487 }14881489 /// Set const on-chain data schema.1490 /// 1491 /// # Permissions1492 /// 1493 /// * Collection Owner1494 /// * Collection Admin1495 /// 1496 /// # Arguments1497 /// 1498 /// * collection_id.1499 /// 1500 /// * schema: String representing the const on-chain data schema.1501 #[weight = <T as Config>::WeightInfo::set_const_on_chain_schema()]1502 #[transactional]1503 pub fn set_const_on_chain_schema (1504 origin,1505 collection_id: CollectionId,1506 schema: Vec<u8>1507 ) -> DispatchResult {1508 let sender = ensure_signed(origin)?;1509 let mut target_collection = Self::get_collection(collection_id)?;1510 Self::check_owner_or_admin_permissions(&target_collection, sender.clone())?;15111512 // check schema limit1513 ensure!(schema.len() as u32 <= ChainLimit::get().const_on_chain_schema_limit, "");15141515 target_collection.const_on_chain_schema = schema;1516 Self::save_collection(target_collection);15171518 Ok(())1519 }15201521 /// Set variable on-chain data schema.1522 /// 1523 /// # Permissions1524 /// 1525 /// * Collection Owner1526 /// * Collection Admin1527 /// 1528 /// # Arguments1529 /// 1530 /// * collection_id.1531 /// 1532 /// * schema: String representing the variable on-chain data schema.1533 #[weight = <T as Config>::WeightInfo::set_const_on_chain_schema()]1534 #[transactional]1535 pub fn set_variable_on_chain_schema (1536 origin,1537 collection_id: CollectionId,1538 schema: Vec<u8>1539 ) -> DispatchResult {1540 let sender = ensure_signed(origin)?;1541 let mut target_collection = Self::get_collection(collection_id)?;1542 Self::check_owner_or_admin_permissions(&target_collection, sender.clone())?;15431544 // check schema limit1545 ensure!(schema.len() as u32 <= ChainLimit::get().variable_on_chain_schema_limit, "");15461547 target_collection.variable_on_chain_schema = schema;1548 Self::save_collection(target_collection);15491550 Ok(())1551 }15521553 // Sudo permissions function1554 #[weight = <T as Config>::WeightInfo::set_chain_limits()]1555 #[transactional]1556 pub fn set_chain_limits(1557 origin,1558 limits: ChainLimits1559 ) -> DispatchResult {15601561 #[cfg(not(feature = "runtime-benchmarks"))]1562 ensure_root(origin)?;15631564 <ChainLimit>::put(limits);1565 Ok(())1566 }15671568 /// Enable smart contract self-sponsoring.1569 /// 1570 /// # Permissions1571 /// 1572 /// * Contract Owner1573 /// 1574 /// # Arguments1575 /// 1576 /// * contract address1577 /// * enable flag1578 /// 1579 #[weight = <T as Config>::WeightInfo::enable_contract_sponsoring()]1580 #[transactional]1581 pub fn enable_contract_sponsoring(1582 origin,1583 contract_address: T::AccountId,1584 enable: bool1585 ) -> DispatchResult {15861587 let sender = ensure_signed(origin)?;15881589 #[cfg(feature = "runtime-benchmarks")]1590 <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());15911592 Self::ensure_contract_owned(sender, &contract_address)?;15931594 <ContractSelfSponsoring<T>>::insert(contract_address, enable);1595 Ok(())1596 }15971598 /// Set the rate limit for contract sponsoring to specified number of blocks.1599 /// 1600 /// If not set (has the default value of 0 blocks), the sponsoring will be disabled. 1601 /// If set to the number B (for blocks), the transactions will be sponsored with a rate 1602 /// limit of B, i.e. fees for every transaction sent to this smart contract will be paid 1603 /// from contract endowment if there are at least B blocks between such transactions. 1604 /// Nonetheless, if transactions are sent more frequently, the fees are paid by the sender.1605 /// 1606 /// # Permissions1607 /// 1608 /// * Contract Owner1609 /// 1610 /// # Arguments1611 /// 1612 /// -`contract_address`: Address of the contract to sponsor1613 /// -`rate_limit`: Number of blocks to wait until the next sponsored transaction is allowed1614 /// 1615 #[weight = <T as Config>::WeightInfo::set_contract_sponsoring_rate_limit()]1616 #[transactional]1617 pub fn set_contract_sponsoring_rate_limit(1618 origin,1619 contract_address: T::AccountId,1620 rate_limit: T::BlockNumber1621 ) -> DispatchResult {1622 let sender = ensure_signed(origin)?;16231624 #[cfg(feature = "runtime-benchmarks")]1625 <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());16261627 Self::ensure_contract_owned(sender, &contract_address)?;1628 <ContractSponsoringRateLimit<T>>::insert(contract_address, rate_limit);1629 Ok(())1630 }16311632 /// Enable the white list for a contract. Only addresses added to the white list with addToContractWhiteList will be able to call this smart contract.1633 /// 1634 /// # Permissions1635 /// 1636 /// * Address that deployed smart contract.1637 /// 1638 /// # Arguments1639 /// 1640 /// -`contract_address`: Address of the contract.1641 /// 1642 /// - `enable`: . 1643 #[weight = <T as Config>::WeightInfo::toggle_contract_white_list()]1644 #[transactional]1645 pub fn toggle_contract_white_list(1646 origin,1647 contract_address: T::AccountId,1648 enable: bool1649 ) -> DispatchResult {1650 let sender = ensure_signed(origin)?;16511652 #[cfg(feature = "runtime-benchmarks")]1653 <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());16541655 Self::ensure_contract_owned(sender, &contract_address)?;1656 if enable {1657 <ContractWhiteListEnabled<T>>::insert(contract_address, true);1658 } else {1659 <ContractWhiteListEnabled<T>>::remove(contract_address);1660 }1661 Ok(())1662 }1663 1664 /// Add an address to smart contract white list.1665 /// 1666 /// # Permissions1667 /// 1668 /// * Address that deployed smart contract.1669 /// 1670 /// # Arguments1671 /// 1672 /// -`contract_address`: Address of the contract.1673 ///1674 /// -`account_address`: Address to add.1675 #[weight = <T as Config>::WeightInfo::add_to_contract_white_list()]1676 #[transactional]1677 pub fn add_to_contract_white_list(1678 origin,1679 contract_address: T::AccountId,1680 account_address: T::AccountId1681 ) -> DispatchResult {1682 let sender = ensure_signed(origin)?;16831684 #[cfg(feature = "runtime-benchmarks")]1685 <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());1686 1687 Self::ensure_contract_owned(sender, &contract_address)?; 1688 <ContractWhiteList<T>>::insert(contract_address, account_address, true);1689 Ok(())1690 }16911692 /// Remove an address from smart contract white list.1693 /// 1694 /// # Permissions1695 /// 1696 /// * Address that deployed smart contract.1697 /// 1698 /// # Arguments1699 /// 1700 /// -`contract_address`: Address of the contract.1701 ///1702 /// -`account_address`: Address to remove.1703 #[weight = <T as Config>::WeightInfo::remove_from_contract_white_list()]1704 #[transactional]1705 pub fn remove_from_contract_white_list(1706 origin,1707 contract_address: T::AccountId,1708 account_address: T::AccountId1709 ) -> DispatchResult {1710 let sender = ensure_signed(origin)?;17111712 #[cfg(feature = "runtime-benchmarks")]1713 <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());17141715 Self::ensure_contract_owned(sender, &contract_address)?;1716 <ContractWhiteList<T>>::remove(contract_address, account_address);1717 Ok(())1718 }17191720 #[weight = <T as Config>::WeightInfo::set_collection_limits()]1721 #[transactional]1722 pub fn set_collection_limits(1723 origin,1724 collection_id: u32,1725 new_limits: CollectionLimits<T::BlockNumber>,1726 ) -> DispatchResult {1727 let sender = ensure_signed(origin)?;1728 let mut target_collection = Self::get_collection(collection_id)?;1729 Self::check_owner_permissions(&target_collection, sender.clone())?;1730 let old_limits = &target_collection.limits;1731 let chain_limits = ChainLimit::get();17321733 // collection bounds1734 ensure!(new_limits.sponsor_transfer_timeout <= MAX_SPONSOR_TIMEOUT &&1735 new_limits.account_token_ownership_limit <= MAX_TOKEN_OWNERSHIP && 1736 new_limits.sponsored_data_size <= chain_limits.custom_data_limit,1737 Error::<T>::CollectionLimitBoundsExceeded);17381739 // token_limit check prev1740 ensure!(old_limits.token_limit >= new_limits.token_limit, Error::<T>::CollectionTokenLimitExceeded);1741 ensure!(new_limits.token_limit > 0, Error::<T>::CollectionTokenLimitExceeded);17421743 ensure!(1744 (old_limits.owner_can_transfer || !new_limits.owner_can_transfer) &&1745 (old_limits.owner_can_destroy || !new_limits.owner_can_destroy),1746 Error::<T>::OwnerPermissionsCantBeReverted,1747 );17481749 target_collection.limits = new_limits;1750 Self::save_collection(target_collection);17511752 Ok(())1753 } 1754 }1755}17561757impl<T: Config> Module<T> {1758 pub fn create_item_internal(sender: T::AccountId, collection_id: CollectionId, owner: T::AccountId, data: CreateItemData) -> DispatchResult {1759 let target_collection = Self::get_collection(collection_id)?;17601761 Self::can_create_items_in_collection(&target_collection, &sender, &owner, 1)?;1762 Self::validate_create_item_args(&target_collection, &data)?;1763 Self::create_item_no_validation(&target_collection, owner, data)?;17641765 Ok(())1766 }17671768 pub fn transfer_internal(sender: T::AccountId, recipient: T::AccountId, target_collection: &CollectionHandle<T>, item_id: TokenId, value: u128) -> DispatchResult {1769 // Limits check1770 Self::is_correct_transfer(target_collection, &recipient)?;17711772 // Transfer permissions check1773 ensure!(Self::is_item_owner(sender.clone(), target_collection, item_id) ||1774 Self::is_owner_or_admin_permissions(target_collection, sender.clone()),1775 Error::<T>::NoPermission);17761777 if target_collection.access == AccessMode::WhiteList {1778 Self::check_white_list(target_collection, &sender)?;1779 Self::check_white_list(target_collection, &recipient)?;1780 }17811782 match target_collection.mode1783 {1784 CollectionMode::NFT => Self::transfer_nft(target_collection, item_id, sender.clone(), recipient.clone())?,1785 CollectionMode::Fungible(_) => Self::transfer_fungible(target_collection, value, &sender, &recipient)?,1786 CollectionMode::ReFungible => Self::transfer_refungible(target_collection, item_id, value, sender.clone(), recipient.clone())?,1787 _ => ()1788 };17891790 Self::deposit_event(RawEvent::Transfer(target_collection.id, item_id, sender, recipient, value));17911792 Ok(())1793 }179417951796 fn is_correct_transfer(collection: &CollectionHandle<T>, recipient: &T::AccountId) -> DispatchResult {1797 let collection_id = collection.id;17981799 // check token limit and account token limit1800 let account_items: u32 = <AddressTokens<T>>::get(collection_id, recipient).len() as u32;1801 ensure!(collection.limits.account_token_ownership_limit > account_items, Error::<T>::AccountTokenLimitExceeded);1802 1803 Ok(())1804 }18051806 fn can_create_items_in_collection(collection: &CollectionHandle<T>, sender: &T::AccountId, owner: &T::AccountId, amount: u32) -> DispatchResult {1807 let collection_id = collection.id;18081809 // check token limit and account token limit1810 let total_items: u32 = ItemListIndex::get(collection_id)1811 .checked_add(amount)1812 .ok_or(Error::<T>::CollectionTokenLimitExceeded)?;1813 let account_items: u32 = (<AddressTokens<T>>::get(collection_id, owner).len() as u32)1814 .checked_add(amount)1815 .ok_or(Error::<T>::AccountTokenLimitExceeded)?;1816 ensure!(collection.limits.token_limit >= total_items, Error::<T>::CollectionTokenLimitExceeded);1817 ensure!(collection.limits.account_token_ownership_limit >= account_items, Error::<T>::AccountTokenLimitExceeded);18181819 if !Self::is_owner_or_admin_permissions(collection, sender.clone()) {1820 ensure!(collection.mint_mode == true, Error::<T>::PublicMintingNotAllowed);1821 Self::check_white_list(collection, owner)?;1822 Self::check_white_list(collection, sender)?;1823 }18241825 Ok(())1826 }18271828 fn validate_create_item_args(target_collection: &CollectionHandle<T>, data: &CreateItemData) -> DispatchResult {1829 match target_collection.mode1830 {1831 CollectionMode::NFT => {1832 if let CreateItemData::NFT(data) = data {1833 // check sizes1834 ensure!(ChainLimit::get().custom_data_limit >= data.const_data.len() as u32, Error::<T>::TokenConstDataLimitExceeded);1835 ensure!(ChainLimit::get().custom_data_limit >= data.variable_data.len() as u32, Error::<T>::TokenVariableDataLimitExceeded);1836 } else {1837 fail!(Error::<T>::NotNftDataUsedToMintNftCollectionToken);1838 }1839 },1840 CollectionMode::Fungible(_) => {1841 if let CreateItemData::Fungible(_) = data {1842 } else {1843 fail!(Error::<T>::NotFungibleDataUsedToMintFungibleCollectionToken);1844 }1845 },1846 CollectionMode::ReFungible => {1847 if let CreateItemData::ReFungible(data) = data {18481849 // check sizes1850 ensure!(ChainLimit::get().custom_data_limit >= data.const_data.len() as u32, Error::<T>::TokenConstDataLimitExceeded);1851 ensure!(ChainLimit::get().custom_data_limit >= data.variable_data.len() as u32, Error::<T>::TokenVariableDataLimitExceeded);18521853 // Check refungibility limits1854 ensure!(data.pieces <= MAX_REFUNGIBLE_PIECES, Error::<T>::WrongRefungiblePieces);1855 ensure!(data.pieces > 0, Error::<T>::WrongRefungiblePieces);1856 } else {1857 fail!(Error::<T>::NotReFungibleDataUsedToMintReFungibleCollectionToken);1858 }1859 },1860 _ => { fail!(Error::<T>::UnexpectedCollectionType); }1861 };18621863 Ok(())1864 }18651866 fn create_item_no_validation(collection: &CollectionHandle<T>, owner: T::AccountId, data: CreateItemData) -> DispatchResult {1867 match data1868 {1869 CreateItemData::NFT(data) => {1870 let item = NftItemType {1871 owner: owner.clone(),1872 const_data: data.const_data,1873 variable_data: data.variable_data1874 };18751876 Self::add_nft_item(collection, item)?;1877 },1878 CreateItemData::Fungible(data) => {1879 Self::add_fungible_item(collection, &owner, data.value)?;1880 },1881 CreateItemData::ReFungible(data) => {1882 let mut owner_list = Vec::new();1883 owner_list.push(Ownership {owner: owner.clone(), fraction: data.pieces});18841885 let item = ReFungibleItemType {1886 owner: owner_list,1887 const_data: data.const_data,1888 variable_data: data.variable_data1889 };18901891 Self::add_refungible_item(collection, item)?;1892 }1893 };18941895 Ok(())1896 }18971898 fn add_fungible_item(collection: &CollectionHandle<T>, owner: &T::AccountId, value: u128) -> DispatchResult {1899 let collection_id = collection.id;19001901 // Does new owner already have an account?1902 let balance: u128 = <FungibleItemList<T>>::get(collection_id, owner).value;19031904 // Mint 1905 let item = FungibleItemType {1906 value: balance.checked_add(value).ok_or(Error::<T>::NumOverflow)?,1907 };1908 <FungibleItemList<T>>::insert(collection_id, (*owner).clone(), item);19091910 // Update balance1911 let new_balance = <Balance<T>>::get(collection_id, owner)1912 .checked_add(value)1913 .ok_or(Error::<T>::NumOverflow)?;1914 <Balance<T>>::insert(collection_id, (*owner).clone(), new_balance);19151916 Self::deposit_event(RawEvent::ItemCreated(collection_id, 0, owner.clone()));1917 Ok(())1918 }19191920 fn add_refungible_item(collection: &CollectionHandle<T>, item: ReFungibleItemType<T::AccountId>) -> DispatchResult {1921 let collection_id = collection.id;19221923 let current_index = <ItemListIndex>::get(collection_id)1924 .checked_add(1)1925 .ok_or(Error::<T>::NumOverflow)?;1926 let itemcopy = item.clone();19271928 ensure!(1929 item.owner.len() == 1,1930 Error::<T>::BadCreateRefungibleCall,1931 );1932 let item_owner = item.owner.first().expect("only one owner is defined");19331934 let value = item_owner.fraction;1935 let owner = item_owner.owner.clone();19361937 Self::add_token_index(collection_id, current_index, &owner)?;19381939 <ItemListIndex>::insert(collection_id, current_index);1940 <ReFungibleItemList<T>>::insert(collection_id, current_index, itemcopy);19411942 // Update balance1943 let new_balance = <Balance<T>>::get(collection_id, &owner)1944 .checked_add(value)1945 .ok_or(Error::<T>::NumOverflow)?;1946 <Balance<T>>::insert(collection_id, owner.clone(), new_balance);19471948 Self::deposit_event(RawEvent::ItemCreated(collection_id, current_index, owner));1949 Ok(())1950 }19511952 fn add_nft_item(collection: &CollectionHandle<T>, item: NftItemType<T::AccountId>) -> DispatchResult {1953 let collection_id = collection.id;19541955 let current_index = <ItemListIndex>::get(collection_id)1956 .checked_add(1)1957 .ok_or(Error::<T>::NumOverflow)?;19581959 let item_owner = item.owner.clone();1960 Self::add_token_index(collection_id, current_index, &item.owner)?;19611962 <ItemListIndex>::insert(collection_id, current_index);1963 <NftItemList<T>>::insert(collection_id, current_index, item);19641965 // Update balance1966 let new_balance = <Balance<T>>::get(collection_id, item_owner.clone())1967 .checked_add(1)1968 .ok_or(Error::<T>::NumOverflow)?;1969 <Balance<T>>::insert(collection_id, item_owner.clone(), new_balance);19701971 Self::deposit_event(RawEvent::ItemCreated(collection_id, current_index, item_owner));1972 Ok(())1973 }19741975 fn burn_refungible_item(1976 collection: &CollectionHandle<T>,1977 item_id: TokenId,1978 owner: &T::AccountId,1979 ) -> DispatchResult {1980 let collection_id = collection.id;19811982 let mut token = <ReFungibleItemList<T>>::get(collection_id, item_id)1983 .ok_or(Error::<T>::TokenNotFound)?;1984 let rft_balance = token1985 .owner1986 .iter()1987 .find(|&i| i.owner == *owner)1988 .ok_or(Error::<T>::TokenNotFound)?;1989 Self::remove_token_index(collection_id, item_id, owner)?;19901991 // update balance1992 let new_balance = <Balance<T>>::get(collection_id, rft_balance.owner.clone())1993 .checked_sub(rft_balance.fraction)1994 .ok_or(Error::<T>::NumOverflow)?;1995 <Balance<T>>::insert(collection_id, rft_balance.owner.clone(), new_balance);19961997 // Re-create owners list with sender removed1998 let index = token1999 .owner2000 .iter()2001 .position(|i| i.owner == *owner)2002 .expect("owned item is exists");2003 token.owner.remove(index);2004 let owner_count = token.owner.len();20052006 // Burn the token completely if this was the last (only) owner2007 if owner_count == 0 {2008 <ReFungibleItemList<T>>::remove(collection_id, item_id);2009 <VariableMetaDataBasket<T>>::remove(collection_id, item_id);2010 }2011 else {2012 <ReFungibleItemList<T>>::insert(collection_id, item_id, token);2013 }20142015 Ok(())2016 }20172018 fn burn_nft_item(collection: &CollectionHandle<T>, item_id: TokenId) -> DispatchResult {2019 let collection_id = collection.id;20202021 let item = <NftItemList<T>>::get(collection_id, item_id)2022 .ok_or(Error::<T>::TokenNotFound)?;2023 Self::remove_token_index(collection_id, item_id, &item.owner)?;20242025 // update balance2026 let new_balance = <Balance<T>>::get(collection_id, &item.owner)2027 .checked_sub(1)2028 .ok_or(Error::<T>::NumOverflow)?;2029 <Balance<T>>::insert(collection_id, item.owner.clone(), new_balance);2030 <NftItemList<T>>::remove(collection_id, item_id);2031 <VariableMetaDataBasket<T>>::remove(collection_id, item_id);20322033 Ok(())2034 }20352036 fn burn_fungible_item(owner: &T::AccountId, collection: &CollectionHandle<T>, value: u128) -> DispatchResult {2037 let collection_id = collection.id;20382039 let mut balance = <FungibleItemList<T>>::get(collection_id, owner);2040 ensure!(balance.value >= value, Error::<T>::TokenValueNotEnough);20412042 // update balance2043 let new_balance = <Balance<T>>::get(collection_id, owner)2044 .checked_sub(value)2045 .ok_or(Error::<T>::NumOverflow)?;2046 <Balance<T>>::insert(collection_id, (*owner).clone(), new_balance);20472048 if balance.value - value > 0 {2049 balance.value -= value;2050 <FungibleItemList<T>>::insert(collection_id, (*owner).clone(), balance);2051 }2052 else {2053 <FungibleItemList<T>>::remove(collection_id, owner);2054 }20552056 Ok(())2057 }20582059 pub fn get_collection(collection_id: CollectionId) -> Result<CollectionHandle<T>, sp_runtime::DispatchError> {2060 Ok(<CollectionById<T>>::get(collection_id)2061 .map(|collection| CollectionHandle {2062 id: collection_id,2063 collection2064 })2065 .ok_or(Error::<T>::CollectionNotFound)?)2066 }20672068 fn save_collection(collection: CollectionHandle<T>) {2069 <CollectionById<T>>::insert(collection.id, collection.collection);2070 }20712072 fn check_owner_permissions(target_collection: &CollectionHandle<T>, subject: T::AccountId) -> DispatchResult {2073 ensure!(2074 subject == target_collection.owner,2075 Error::<T>::NoPermission2076 );20772078 Ok(())2079 }20802081 fn is_owner_or_admin_permissions(collection: &CollectionHandle<T>, subject: T::AccountId) -> bool {2082 subject == collection.owner || <AdminList<T>>::get(collection.id).contains(&subject)2083 }20842085 fn check_owner_or_admin_permissions(2086 collection: &CollectionHandle<T>,2087 subject: T::AccountId,2088 ) -> DispatchResult {2089 ensure!(Self::is_owner_or_admin_permissions(collection, subject), Error::<T>::NoPermission);20902091 Ok(())2092 }20932094 fn owned_amount(2095 subject: T::AccountId,2096 target_collection: &CollectionHandle<T>,2097 item_id: TokenId,2098 ) -> Option<u128> {2099 let collection_id = target_collection.id;21002101 match target_collection.mode {2102 CollectionMode::NFT => (<NftItemList<T>>::get(collection_id, item_id)?.owner == subject)2103 .then(|| 1),2104 CollectionMode::Fungible(_) => Some(<FungibleItemList<T>>::get(collection_id, &subject)2105 .value),2106 CollectionMode::ReFungible => <ReFungibleItemList<T>>::get(collection_id, item_id)?2107 .owner2108 .iter()2109 .find(|i| i.owner == subject)2110 .map(|i| i.fraction),2111 CollectionMode::Invalid => None,2112 }2113 }21142115 fn is_item_owner(subject: T::AccountId, target_collection: &CollectionHandle<T>, item_id: TokenId) -> bool {2116 match target_collection.mode {2117 CollectionMode::Fungible(_) => true,2118 _ => Self::owned_amount(subject, target_collection, item_id).is_some(),2119 }2120 }21212122 fn check_white_list(collection: &CollectionHandle<T>, address: &T::AccountId) -> DispatchResult {2123 let collection_id = collection.id;21242125 let mes = Error::<T>::AddresNotInWhiteList;2126 ensure!(<WhiteList<T>>::contains_key(collection_id, address), mes);21272128 Ok(())2129 }21302131 /// Check if token exists. In case of Fungible, check if there is an entry for 2132 /// the owner in fungible balances double map2133 fn token_exists(2134 target_collection: &CollectionHandle<T>,2135 item_id: TokenId,2136 ) -> DispatchResult {2137 let collection_id = target_collection.id;2138 let exists = match target_collection.mode2139 {2140 CollectionMode::NFT => <NftItemList<T>>::contains_key(collection_id, item_id),2141 CollectionMode::Fungible(_) => true,2142 CollectionMode::ReFungible => <ReFungibleItemList<T>>::contains_key(collection_id, item_id),2143 _ => false2144 };21452146 ensure!(exists == true, Error::<T>::TokenNotFound);2147 Ok(())2148 }21492150 fn transfer_fungible(2151 collection: &CollectionHandle<T>,2152 value: u128,2153 owner: &T::AccountId,2154 recipient: &T::AccountId,2155 ) -> DispatchResult {2156 let collection_id = collection.id;21572158 let mut balance = <FungibleItemList<T>>::get(collection_id, owner);2159 ensure!(balance.value >= value, Error::<T>::TokenValueTooLow);21602161 // Send balance to recipient (updates balanceOf of recipient)2162 Self::add_fungible_item(collection, recipient, value)?;21632164 // update balanceOf of sender2165 <Balance<T>>::insert(collection_id, (*owner).clone(), balance.value - value);21662167 // Reduce or remove sender2168 if balance.value == value {2169 <FungibleItemList<T>>::remove(collection_id, owner);2170 }2171 else {2172 balance.value -= value;2173 <FungibleItemList<T>>::insert(collection_id, (*owner).clone(), balance);2174 }21752176 Ok(())2177 }21782179 fn transfer_refungible(2180 collection: &CollectionHandle<T>,2181 item_id: TokenId,2182 value: u128,2183 owner: T::AccountId,2184 new_owner: T::AccountId,2185 ) -> DispatchResult {2186 let collection_id = collection.id;2187 let full_item = <ReFungibleItemList<T>>::get(collection_id, item_id)2188 .ok_or(Error::<T>::TokenNotFound)?;21892190 let item = full_item2191 .owner2192 .iter()2193 .filter(|i| i.owner == owner)2194 .next()2195 .ok_or(Error::<T>::TokenNotFound)?;2196 let amount = item.fraction;21972198 ensure!(amount >= value, Error::<T>::TokenValueTooLow);21992200 // update balance2201 let balance_old_owner = <Balance<T>>::get(collection_id, item.owner.clone())2202 .checked_sub(value)2203 .ok_or(Error::<T>::NumOverflow)?;2204 <Balance<T>>::insert(collection_id, item.owner.clone(), balance_old_owner);22052206 let balance_new_owner = <Balance<T>>::get(collection_id, new_owner.clone())2207 .checked_add(value)2208 .ok_or(Error::<T>::NumOverflow)?;2209 <Balance<T>>::insert(collection_id, new_owner.clone(), balance_new_owner);22102211 let old_owner = item.owner.clone();2212 let new_owner_has_account = full_item.owner.iter().any(|i| i.owner == new_owner);22132214 // transfer2215 if amount == value && !new_owner_has_account {2216 // change owner2217 // new owner do not have account2218 let mut new_full_item = full_item.clone();2219 new_full_item2220 .owner2221 .iter_mut()2222 .find(|i| i.owner == owner)2223 .expect("old owner does present in refungible")2224 .owner = new_owner.clone();2225 <ReFungibleItemList<T>>::insert(collection_id, item_id, new_full_item);22262227 // update index collection2228 Self::move_token_index(collection_id, item_id, &old_owner, &new_owner)?;2229 } else {2230 let mut new_full_item = full_item.clone();2231 new_full_item2232 .owner2233 .iter_mut()2234 .find(|i| i.owner == owner)2235 .expect("old owner does present in refungible")2236 .fraction -= value;22372238 // separate amount2239 if new_owner_has_account {2240 // new owner has account2241 new_full_item2242 .owner2243 .iter_mut()2244 .find(|i| i.owner == new_owner)2245 .expect("new owner has account")2246 .fraction += value;2247 } else {2248 // new owner do not have account2249 new_full_item.owner.push(Ownership {2250 owner: new_owner.clone(),2251 fraction: value,2252 });2253 Self::add_token_index(collection_id, item_id, &new_owner)?;2254 }22552256 <ReFungibleItemList<T>>::insert(collection_id, item_id, new_full_item);2257 }22582259 Ok(())2260 }22612262 fn transfer_nft(2263 collection: &CollectionHandle<T>,2264 item_id: TokenId,2265 sender: T::AccountId,2266 new_owner: T::AccountId,2267 ) -> DispatchResult {2268 let collection_id = collection.id;2269 let mut item = <NftItemList<T>>::get(collection_id, item_id)2270 .ok_or(Error::<T>::TokenNotFound)?;22712272 ensure!(2273 sender == item.owner,2274 Error::<T>::MustBeTokenOwner2275 );22762277 // update balance2278 let balance_old_owner = <Balance<T>>::get(collection_id, item.owner.clone())2279 .checked_sub(1)2280 .ok_or(Error::<T>::NumOverflow)?;2281 <Balance<T>>::insert(collection_id, item.owner.clone(), balance_old_owner);22822283 let balancenew_owner = <Balance<T>>::get(collection_id, new_owner.clone())2284 .checked_add(1)2285 .ok_or(Error::<T>::NumOverflow)?;2286 <Balance<T>>::insert(collection_id, new_owner.clone(), balancenew_owner);22872288 // change owner2289 let old_owner = item.owner.clone();2290 item.owner = new_owner.clone();2291 <NftItemList<T>>::insert(collection_id, item_id, item);22922293 // update index collection2294 Self::move_token_index(collection_id, item_id, &old_owner, &new_owner)?;22952296 Ok(())2297 }2298 2299 fn set_re_fungible_variable_data(2300 collection: &CollectionHandle<T>,2301 item_id: TokenId,2302 data: Vec<u8>2303 ) -> DispatchResult {2304 let collection_id = collection.id;2305 let mut item = <ReFungibleItemList<T>>::get(collection_id, item_id)2306 .ok_or(Error::<T>::TokenNotFound)?;23072308 item.variable_data = data;23092310 <ReFungibleItemList<T>>::insert(collection_id, item_id, item);23112312 Ok(())2313 }23142315 fn set_nft_variable_data(2316 collection: &CollectionHandle<T>,2317 item_id: TokenId,2318 data: Vec<u8>2319 ) -> DispatchResult {2320 let collection_id = collection.id;2321 let mut item = <NftItemList<T>>::get(collection_id, item_id)2322 .ok_or(Error::<T>::TokenNotFound)?;2323 2324 item.variable_data = data;23252326 <NftItemList<T>>::insert(collection_id, item_id, item);2327 2328 Ok(())2329 }23302331 fn init_collection(item: &Collection<T>) {2332 // check params2333 assert!(2334 item.decimal_points <= MAX_DECIMAL_POINTS,2335 "decimal_points parameter must be lower than MAX_DECIMAL_POINTS"2336 );2337 assert!(2338 item.name.len() <= 64,2339 "Collection name can not be longer than 63 char"2340 );2341 assert!(2342 item.name.len() <= 256,2343 "Collection description can not be longer than 255 char"2344 );2345 assert!(2346 item.token_prefix.len() <= 16,2347 "Token prefix can not be longer than 15 char"2348 );23492350 // Generate next collection ID2351 let next_id = CreatedCollectionCount::get()2352 .checked_add(1)2353 .unwrap();23542355 CreatedCollectionCount::put(next_id);2356 }23572358 fn init_nft_token(collection_id: CollectionId, item: &NftItemType<T::AccountId>) {2359 let current_index = <ItemListIndex>::get(collection_id)2360 .checked_add(1)2361 .unwrap();23622363 let item_owner = item.owner.clone();2364 Self::add_token_index(collection_id, current_index, &item.owner).unwrap();23652366 <ItemListIndex>::insert(collection_id, current_index);23672368 // Update balance2369 let new_balance = <Balance<T>>::get(collection_id, &item_owner)2370 .checked_add(1)2371 .unwrap();2372 <Balance<T>>::insert(collection_id, item_owner.clone(), new_balance);2373 }23742375 fn init_fungible_token(collection_id: CollectionId, owner: &T::AccountId, item: &FungibleItemType) {2376 let current_index = <ItemListIndex>::get(collection_id)2377 .checked_add(1)2378 .unwrap();23792380 Self::add_token_index(collection_id, current_index, owner).unwrap();23812382 <ItemListIndex>::insert(collection_id, current_index);23832384 // Update balance2385 let new_balance = <Balance<T>>::get(collection_id, owner)2386 .checked_add(item.value)2387 .unwrap();2388 <Balance<T>>::insert(collection_id, (*owner).clone(), new_balance);2389 }23902391 fn init_refungible_token(collection_id: CollectionId, item: &ReFungibleItemType<T::AccountId>) {2392 let current_index = <ItemListIndex>::get(collection_id)2393 .checked_add(1)2394 .unwrap();23952396 let value = item.owner.first().unwrap().fraction;2397 let owner = item.owner.first().unwrap().owner.clone();23982399 Self::add_token_index(collection_id, current_index, &owner).unwrap();24002401 <ItemListIndex>::insert(collection_id, current_index);24022403 // Update balance2404 let new_balance = <Balance<T>>::get(collection_id, &owner)2405 .checked_add(value)2406 .unwrap();2407 <Balance<T>>::insert(collection_id, owner.clone(), new_balance);2408 }24092410 fn add_token_index(collection_id: CollectionId, item_index: TokenId, owner: &T::AccountId) -> DispatchResult {2411 // add to account limit2412 if <AccountItemCount<T>>::contains_key(owner) {24132414 // bound Owned tokens by a single address2415 let count = <AccountItemCount<T>>::get(owner);2416 ensure!(count < ChainLimit::get().account_token_ownership_limit, Error::<T>::AddressOwnershipLimitExceeded);24172418 <AccountItemCount<T>>::insert(owner.clone(), count2419 .checked_add(1)2420 .ok_or(Error::<T>::NumOverflow)?);2421 }2422 else {2423 <AccountItemCount<T>>::insert(owner.clone(), 1);2424 }24252426 let list_exists = <AddressTokens<T>>::contains_key(collection_id, owner);2427 if list_exists {2428 let mut list = <AddressTokens<T>>::get(collection_id, owner);2429 let item_contains = list.contains(&item_index.clone());24302431 if !item_contains {2432 list.push(item_index.clone());2433 }24342435 <AddressTokens<T>>::insert(collection_id, owner.clone(), list);2436 } else {2437 let mut itm = Vec::new();2438 itm.push(item_index.clone());2439 <AddressTokens<T>>::insert(collection_id, owner.clone(), itm);2440 }24412442 Ok(())2443 }24442445 fn remove_token_index(2446 collection_id: CollectionId,2447 item_index: TokenId,2448 owner: &T::AccountId,2449 ) -> DispatchResult {24502451 // update counter2452 <AccountItemCount<T>>::insert(owner.clone(), 2453 <AccountItemCount<T>>::get(owner)2454 .checked_sub(1)2455 .ok_or(Error::<T>::NumOverflow)?);245624572458 let list_exists = <AddressTokens<T>>::contains_key(collection_id, owner);2459 if list_exists {2460 let mut list = <AddressTokens<T>>::get(collection_id, owner);2461 let item_contains = list.contains(&item_index.clone());24622463 if item_contains {2464 list.retain(|&item| item != item_index);2465 <AddressTokens<T>>::insert(collection_id, owner.clone(), list);2466 }2467 }24682469 Ok(())2470 }24712472 fn move_token_index(2473 collection_id: CollectionId,2474 item_index: TokenId,2475 old_owner: &T::AccountId,2476 new_owner: &T::AccountId,2477 ) -> DispatchResult {2478 Self::remove_token_index(collection_id, item_index, old_owner)?;2479 Self::add_token_index(collection_id, item_index, new_owner)?;24802481 Ok(())2482 }2483 2484 fn ensure_contract_owned(account: T::AccountId, contract: &T::AccountId) -> DispatchResult {2485 ensure!(<ContractOwner<T>>::get(contract) == Some(account), Error::<T>::NoPermission);24862487 Ok(())2488 }2489}24902491////////////////////////////////////////////////////////////////////////////////////////////////////2492// Economic models2493// #region24942495/// Fee multiplier.2496pub type Multiplier = FixedU128;24972498type BalanceOf<T> = <<T as pallet_transaction_payment::Config>::OnChargeTransaction as pallet_transaction_payment::OnChargeTransaction<T>>::Balance;24992500/// Require the transactor pay for themselves and maybe include a tip to gain additional priority2501/// in the queue.2502#[derive(Encode, Decode, Clone, Eq, PartialEq)]2503pub struct ChargeTransactionPayment<T: Config>(#[codec(compact)] BalanceOf<T>);25042505impl<T: Config + Send + Sync> sp_std::fmt::Debug 2506 for ChargeTransactionPayment<T>2507{2508 #[cfg(feature = "std")]2509 fn fmt(&self, f: &mut sp_std::fmt::Formatter) -> sp_std::fmt::Result {2510 write!(f, "ChargeTransactionPayment<{:?}>", self.0)2511 }2512 #[cfg(not(feature = "std"))]2513 fn fmt(&self, _: &mut sp_std::fmt::Formatter) -> sp_std::fmt::Result {2514 Ok(())2515 }2516}25172518impl<T: Config> ChargeTransactionPayment<T>2519where2520 T::Call: Dispatchable<Info=DispatchInfo, PostInfo=PostDispatchInfo> + IsSubType<Call<T>> + IsSubType<pallet_contracts::Call<T>>,2521 BalanceOf<T>: Send + Sync + From<u64> + FixedPointOperand,2522 T::AccountId: AsRef<[u8]>,2523 T::AccountId: UncheckedFrom<T::Hash>,2524{2525 fn traditional_fee(2526 len: usize,2527 info: &DispatchInfoOf<T::Call>,2528 tip: BalanceOf<T>,2529 ) -> BalanceOf<T>2530 where2531 T::Call: Dispatchable<Info = DispatchInfo>,2532 {2533 <pallet_transaction_payment::Module<T>>::compute_fee(len as u32, info, tip)2534 }25352536 fn get_priority(len: usize, info: &DispatchInfoOf<T::Call>, final_fee: BalanceOf<T>) -> TransactionPriority {2537 let weight_saturation = T::BlockWeights::get().max_block / info.weight.max(1);2538 let max_block_length = *T::BlockLength::get().max.get(DispatchClass::Normal);2539 let len_saturation = max_block_length as u64 / (len as u64).max(1);2540 let coefficient: BalanceOf<T> = weight_saturation2541 .min(len_saturation)2542 .saturated_into::<BalanceOf<T>>();2543 final_fee2544 .saturating_mul(coefficient)2545 .saturated_into::<TransactionPriority>()2546 }25472548 fn withdraw_fee(2549 &self,2550 who: &T::AccountId,2551 call: &T::Call,2552 info: &DispatchInfoOf<T::Call>,2553 len: usize,2554 ) -> Result<2555 (2556 BalanceOf<T>,2557 <<T as pallet_transaction_payment::Config>::OnChargeTransaction as pallet_transaction_payment::OnChargeTransaction<T>>::LiquidityInfo,2558 ),2559 TransactionValidityError,2560 > {2561 let tip = self.0;25622563 let fee = Self::traditional_fee(len, info, tip);25642565 // Only mess with balances if fee is not zero.2566 if fee.is_zero() {2567 return <<T as pallet_transaction_payment::Config>::OnChargeTransaction as pallet_transaction_payment::OnChargeTransaction<T>>::withdraw_fee(who, call, info, fee, tip)2568 .map(|i| (fee, i));2569 }25702571 // Determine who is paying transaction fee based on ecnomic model2572 // Parse call to extract collection ID and access collection sponsor2573 let mut sponsor: Option<T::AccountId> = (|| match IsSubType::<Call<T>>::is_sub_type(call) {2574 Some(Call::create_item(collection_id, _owner, _properties)) => {2575 let collection = <CollectionById<T>>::get(collection_id)?;25762577 // sponsor timeout2578 let block_number = <system::Module<T>>::block_number() as T::BlockNumber;25792580 let limit = collection.limits.sponsor_transfer_timeout;2581 if <CreateItemBasket<T>>::contains_key((collection_id, &who)) {2582 let last_tx_block = <CreateItemBasket<T>>::get((collection_id, &who));2583 let limit_time = last_tx_block + limit.into();2584 if block_number <= limit_time {2585 return None;2586 }2587 }2588 <CreateItemBasket<T>>::insert((collection_id, who.clone()), block_number);25892590 // check free create limit2591 if collection.limits.sponsored_data_size >= (_properties.len() as u32) {2592 collection.sponsorship.sponsor()2593 .cloned()2594 } else {2595 None2596 }2597 }2598 Some(Call::transfer(_new_owner, collection_id, item_id, _value)) => {2599 let collection = <CollectionById<T>>::get(collection_id)?;2600 2601 let mut sponsor_transfer = false;2602 if collection.sponsorship.confirmed() {26032604 let collection_limits = collection.limits;2605 let collection_mode = collection.mode;2606 2607 // sponsor timeout2608 let block_number = <system::Module<T>>::block_number() as T::BlockNumber;2609 sponsor_transfer = match collection_mode {2610 CollectionMode::NFT => {2611 2612 // get correct limit2613 let limit: u32 = if collection_limits.sponsor_transfer_timeout > 0 {2614 collection_limits.sponsor_transfer_timeout2615 } else {2616 ChainLimit::get().nft_sponsor_transfer_timeout2617 };2618 2619 let mut sponsored = true;2620 if <NftTransferBasket<T>>::contains_key(collection_id, item_id) {2621 let last_tx_block = <NftTransferBasket<T>>::get(collection_id, item_id);2622 let limit_time = last_tx_block + limit.into();2623 if block_number <= limit_time {2624 sponsored = false;2625 }2626 }2627 if sponsored {2628 <NftTransferBasket<T>>::insert(collection_id, item_id, block_number);2629 }26302631 sponsored2632 }2633 CollectionMode::Fungible(_) => {2634 2635 // get correct limit2636 let limit: u32 = if collection_limits.sponsor_transfer_timeout > 0 {2637 collection_limits.sponsor_transfer_timeout2638 } else {2639 ChainLimit::get().fungible_sponsor_transfer_timeout2640 };2641 2642 let block_number = <system::Module<T>>::block_number() as T::BlockNumber;2643 let mut sponsored = true;2644 if <FungibleTransferBasket<T>>::contains_key(collection_id, who) {2645 let last_tx_block = <FungibleTransferBasket<T>>::get(collection_id, who);2646 let limit_time = last_tx_block + limit.into();2647 if block_number <= limit_time {2648 sponsored = false;2649 }2650 }2651 if sponsored {2652 <FungibleTransferBasket<T>>::insert(collection_id, who, block_number);2653 }26542655 sponsored2656 }2657 CollectionMode::ReFungible => {2658 2659 // get correct limit2660 let limit: u32 = if collection_limits.sponsor_transfer_timeout > 0 {2661 collection_limits.sponsor_transfer_timeout2662 } else {2663 ChainLimit::get().refungible_sponsor_transfer_timeout2664 };2665 2666 let mut sponsored = true;2667 if <ReFungibleTransferBasket<T>>::contains_key(collection_id, item_id) {2668 let last_tx_block = <ReFungibleTransferBasket<T>>::get(collection_id, item_id);2669 let limit_time = last_tx_block + limit.into();2670 if block_number <= limit_time {2671 sponsored = false;2672 }2673 }2674 if sponsored {2675 <ReFungibleTransferBasket<T>>::insert(collection_id, item_id, block_number);2676 }26772678 sponsored2679 }2680 _ => {2681 false2682 },2683 };2684 }26852686 if !sponsor_transfer {2687 None2688 } else {2689 collection.sponsorship.sponsor()2690 .cloned()2691 }2692 }26932694 Some(Call::set_variable_meta_data(collection_id, item_id, data)) => {2695 let mut sponsor_metadata_changes = false;26962697 let collection = <CollectionById<T>>::get(collection_id)?;26982699 if2700 collection.sponsorship.confirmed() &&2701 // Can't sponsor fungible collection, this tx will be rejected2702 // as invalid2703 !matches!(collection.mode, CollectionMode::Fungible(_)) &&2704 data.len() <= collection.limits.sponsored_data_size as usize2705 {2706 if let Some(rate_limit) = collection.limits.sponsored_data_rate_limit {2707 let block_number = <system::Module<T>>::block_number() as T::BlockNumber;27082709 if <VariableMetaDataBasket<T>>::get(collection_id, item_id)2710 .map(|last_block| block_number - last_block > rate_limit)2711 .unwrap_or(true) 2712 {2713 sponsor_metadata_changes = true;2714 <VariableMetaDataBasket<T>>::insert(collection_id, item_id, block_number);2715 }2716 }2717 }27182719 if !sponsor_metadata_changes {2720 None2721 } else {2722 collection.sponsorship.sponsor().cloned()2723 }2724 }27252726 _ => None,2727 })();27282729 match IsSubType::<pallet_contracts::Call<T>>::is_sub_type(call) {2730 Some(pallet_contracts::Call::call(dest, _value, _gas_limit, _data)) => {27312732 let called_contract: T::AccountId = T::Lookup::lookup((*dest).clone()).unwrap_or(T::AccountId::default());27332734 let owned_contract = <ContractOwner<T>>::get(called_contract.clone()).as_ref() == Some(who);2735 let white_list_enabled = <ContractWhiteListEnabled<T>>::contains_key(called_contract.clone());2736 2737 if !owned_contract && white_list_enabled {2738 if !<ContractWhiteList<T>>::contains_key(called_contract.clone(), who) {2739 return Err(InvalidTransaction::Call.into());2740 }2741 }2742 },2743 _ => {},2744 }27452746 // Sponsor smart contracts2747 sponsor = sponsor.or_else(|| match IsSubType::<pallet_contracts::Call<T>>::is_sub_type(call) {27482749 // On instantiation: set the contract owner2750 Some(pallet_contracts::Call::instantiate(_endowment, _gas_limit, code_hash, _data, salt)) => {27512752 let new_contract_address = <pallet_contracts::Module<T>>::contract_address(2753 &who,2754 code_hash,2755 salt,2756 );2757 <ContractOwner<T>>::insert(new_contract_address.clone(), who.clone());27582759 None2760 },27612762 // On instantiation with code: set the contract owner2763 Some(pallet_contracts::Call::instantiate_with_code(_endowment, _gas_limit, _code, _data, _salt)) => {27642765 let new_contract_address = <pallet_contracts::Module<T>>::contract_address(2766 &who,2767 &T::Hashing::hash(&_code),2768 _salt,2769 );27702771 <ContractOwner<T>>::insert(new_contract_address.clone(), who.clone());27722773 None2774 }27752776 // When the contract is called, check if the sponsoring is enabled and pay fees from contract endowment if it is2777 Some(pallet_contracts::Call::call(dest, _value, _gas_limit, _data)) => {27782779 let called_contract: T::AccountId = T::Lookup::lookup((*dest).clone()).unwrap_or(T::AccountId::default());27802781 let mut sponsor_transfer = false;2782 if <ContractSponsoringRateLimit<T>>::contains_key(called_contract.clone()) {2783 let last_tx_block = <ContractSponsorBasket<T>>::get((&called_contract, &who));2784 let block_number = <system::Module<T>>::block_number() as T::BlockNumber;2785 let rate_limit = <ContractSponsoringRateLimit<T>>::get(&called_contract);2786 let limit_time = last_tx_block + rate_limit;27872788 if block_number >= limit_time {2789 <ContractSponsorBasket<T>>::insert((called_contract.clone(), who.clone()), block_number);2790 sponsor_transfer = true;2791 }2792 } else {2793 sponsor_transfer = false;2794 }2795 2796 if sponsor_transfer {2797 if <ContractSelfSponsoring<T>>::contains_key(called_contract.clone()) {2798 if <ContractSelfSponsoring<T>>::get(called_contract.clone()) {2799 return Some(called_contract);2800 }2801 }2802 }28032804 None2805 },28062807 _ => None,2808 });28092810 let who_pays_fee = sponsor.unwrap_or_else(|| who.clone());28112812 <<T as pallet_transaction_payment::Config>::OnChargeTransaction as pallet_transaction_payment::OnChargeTransaction<T>>::withdraw_fee(&who_pays_fee, call, info, fee, tip)2813 .map(|i| (fee, i))2814 }2815}281628172818impl<T: Config + Send + Sync> SignedExtension2819 for ChargeTransactionPayment<T>2820where2821 BalanceOf<T>: Send + Sync + From<u64> + FixedPointOperand,2822 T::Call: Dispatchable<Info = DispatchInfo, PostInfo = PostDispatchInfo> + IsSubType<Call<T>> + IsSubType<pallet_contracts::Call<T>>,2823 T::AccountId: AsRef<[u8]>,2824 T::AccountId: UncheckedFrom<T::Hash>,2825{2826 const IDENTIFIER: &'static str = "ChargeTransactionPayment";2827 type AccountId = T::AccountId;2828 type Call = T::Call;2829 type AdditionalSigned = ();2830 type Pre = (2831 // tip2832 BalanceOf<T>,2833 // who pays fee2834 Self::AccountId,2835 // imbalance resulting from withdrawing the fee2836 <<T as pallet_transaction_payment::Config>::OnChargeTransaction as pallet_transaction_payment::OnChargeTransaction<T>>::LiquidityInfo,2837 );2838 fn additional_signed(&self) -> sp_std::result::Result<(), TransactionValidityError> {2839 Ok(())2840 }28412842 fn validate(2843 &self,2844 who: &Self::AccountId,2845 call: &Self::Call,2846 info: &DispatchInfoOf<Self::Call>,2847 len: usize,2848 ) -> TransactionValidity {2849 let (fee, _) = self.withdraw_fee(who, call, info, len)?;2850 Ok(ValidTransaction {2851 priority: Self::get_priority(len, info, fee),2852 ..Default::default()2853 })2854 }28552856 fn pre_dispatch(2857 self,2858 who: &Self::AccountId,2859 call: &Self::Call,2860 info: &DispatchInfoOf<Self::Call>,2861 len: usize,2862 ) -> Result<Self::Pre, TransactionValidityError> {2863 let (_fee, imbalance) = self.withdraw_fee(who, call, info, len)?;2864 Ok((self.0, who.clone(), imbalance))2865 }28662867 fn post_dispatch(2868 pre: Self::Pre,2869 info: &DispatchInfoOf<Self::Call>,2870 post_info: &PostDispatchInfoOf<Self::Call>,2871 len: usize,2872 _result: &DispatchResult,2873 ) -> Result<(), TransactionValidityError> {2874 let (tip, who, imbalance) = pre;2875 let actual_fee = pallet_transaction_payment::Module::<T>::compute_actual_fee(2876 len as u32,2877 info,2878 post_info,2879 tip,2880 );2881 <T as pallet_transaction_payment::Config>::OnChargeTransaction::correct_and_deposit_fee(&who, info, post_info, actual_fee, tip, imbalance)?;2882 Ok(())2883 }2884}28852886// #endregion1//2// This file is subject to the terms and conditions defined in3// file 'LICENSE', which is part of this source code package.4//56#![recursion_limit = "1024"]78#![cfg_attr(not(feature = "std"), no_std)]910#[cfg(feature = "std")]11pub use std::*;1213#[cfg(feature = "std")]14pub use serde::*;1516use core::ops::{Deref, DerefMut};17use codec::{Decode, Encode};18pub use frame_support::{19 construct_runtime, decl_event, decl_module, decl_storage, decl_error,20 dispatch::DispatchResult,21 ensure, fail, parameter_types,22 traits::{23 Currency, ExistenceRequirement, Get, Imbalance, KeyOwnerProofSystem, OnUnbalanced,24 Randomness, IsSubType, WithdrawReasons,25 },26 weights::{27 constants::{BlockExecutionWeight, ExtrinsicBaseWeight, RocksDbWeight, WEIGHT_PER_SECOND},28 DispatchInfo, GetDispatchInfo, IdentityFee, Pays, PostDispatchInfo, Weight,29 WeightToFeePolynomial, DispatchClass,30 },31 StorageValue,32 transactional,33};3435use frame_system::{self as system, ensure_signed, ensure_root};36use sp_runtime::sp_std::prelude::Vec;37use sp_runtime::{38 traits::{39 Hash, DispatchInfoOf, Dispatchable, PostDispatchInfoOf, Saturating, SaturatedConversion, SignedExtension, Zero,40 },41 transaction_validity::{42 TransactionPriority, InvalidTransaction, TransactionValidity, TransactionValidityError, ValidTransaction,43 },44 FixedPointOperand, FixedU128,45};46use sp_runtime::traits::StaticLookup;47use pallet_contracts::chain_extension::UncheckedFrom;48use pallet_transaction_payment::OnChargeTransaction;4950#[cfg(test)]51mod mock;5253#[cfg(test)]54mod tests;5556mod default_weights;5758pub const MAX_DECIMAL_POINTS: DecimalPoints = 30;59pub const MAX_REFUNGIBLE_PIECES: u128 = 1_000_000_000_000_000_000_000;60pub const MAX_SPONSOR_TIMEOUT: u32 = 10_368_000;61pub const MAX_TOKEN_OWNERSHIP: u32 = 10_000_000;6263// Structs64// #region6566pub type CollectionId = u32;67pub type TokenId = u32;68pub type DecimalPoints = u8;6970#[derive(Encode, Decode, Eq, Debug, Clone, PartialEq)]71#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]72pub enum CollectionMode {73 Invalid,74 NFT,75 // decimal points76 Fungible(DecimalPoints),77 ReFungible,78}7980impl Default for CollectionMode {81 fn default() -> Self {82 Self::Invalid83 }84}8586impl Into<u8> for CollectionMode {87 fn into(self) -> u8 {88 match self {89 CollectionMode::Invalid => 0,90 CollectionMode::NFT => 1,91 CollectionMode::Fungible(_) => 2,92 CollectionMode::ReFungible => 3,93 }94 }95}9697#[derive(Encode, Decode, Eq, Debug, Clone, PartialEq)]98#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]99pub enum AccessMode {100 Normal,101 WhiteList,102}103impl Default for AccessMode {104 fn default() -> Self {105 Self::Normal106 }107}108109#[derive(Encode, Decode, Eq, Debug, Clone, PartialEq)]110#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]111pub enum SchemaVersion {112 ImageURL,113 Unique,114}115impl Default for SchemaVersion {116 fn default() -> Self {117 Self::ImageURL118 }119}120121#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]122#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]123pub struct Ownership<AccountId> {124 pub owner: AccountId,125 pub fraction: u128,126}127128#[derive(Encode, Decode, Debug, Clone, PartialEq)]129#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]130pub enum SponsorshipState<AccountId> {131 /// The fees are applied to the transaction sender132 Disabled,133 Unconfirmed(AccountId),134 /// Transactions are sponsored by specified account135 Confirmed(AccountId),136}137138impl<AccountId> SponsorshipState<AccountId> {139 fn sponsor(&self) -> Option<&AccountId> {140 match self {141 Self::Confirmed(sponsor) => Some(sponsor),142 _ => None,143 }144 }145146 fn pending_sponsor(&self) -> Option<&AccountId> {147 match self {148 Self::Unconfirmed(sponsor) | Self::Confirmed(sponsor) => Some(sponsor),149 _ => None,150 }151 }152153 fn confirmed(&self) -> bool {154 matches!(self, Self::Confirmed(_))155 }156}157158impl<T> Default for SponsorshipState<T> {159 fn default() -> Self {160 Self::Disabled161 }162}163164#[derive(Encode, Decode, Clone, PartialEq)]165#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]166pub struct Collection<T: Config> {167 pub owner: T::AccountId,168 pub mode: CollectionMode,169 pub access: AccessMode,170 pub decimal_points: DecimalPoints,171 pub name: Vec<u16>, // 64 include null escape char172 pub description: Vec<u16>, // 256 include null escape char173 pub token_prefix: Vec<u8>, // 16 include null escape char174 pub mint_mode: bool,175 pub offchain_schema: Vec<u8>,176 pub schema_version: SchemaVersion,177 pub sponsorship: SponsorshipState<T::AccountId>,178 pub limits: CollectionLimits<T::BlockNumber>, // Collection private restrictions 179 pub variable_on_chain_schema: Vec<u8>, //180 pub const_on_chain_schema: Vec<u8>, //181}182183pub struct CollectionHandle<T: Config> {184 pub id: CollectionId,185 collection: Collection<T>,186}187188impl<T: Config> Deref for CollectionHandle<T> {189 type Target = Collection<T>;190191 fn deref(&self) -> &Self::Target {192 &self.collection193 }194}195196impl<T: Config> DerefMut for CollectionHandle<T> {197 fn deref_mut(&mut self) -> &mut Self::Target {198 &mut self.collection199 }200}201202#[derive(Encode, Decode, Debug, Clone, PartialEq)]203#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]204pub struct NftItemType<AccountId> {205 pub owner: AccountId,206 pub const_data: Vec<u8>,207 pub variable_data: Vec<u8>,208}209210#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]211#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]212pub struct FungibleItemType {213 pub value: u128,214}215216#[derive(Encode, Decode, Debug, Clone, PartialEq)]217#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]218pub struct ReFungibleItemType<AccountId> {219 pub owner: Vec<Ownership<AccountId>>,220 pub const_data: Vec<u8>,221 pub variable_data: Vec<u8>,222}223224// #[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]225// #[cfg_attr(feature = "std", derive(Serialize, Deserialize))]226// pub struct VestingItem<AccountId, Moment> {227// pub sender: AccountId,228// pub recipient: AccountId,229// pub collection_id: CollectionId,230// pub item_id: TokenId,231// pub amount: u64,232// pub vesting_date: Moment,233// }234235#[derive(Encode, Decode, Debug, Clone, PartialEq)]236#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]237pub struct CollectionLimits<BlockNumber: Encode + Decode> {238 pub account_token_ownership_limit: u32,239 pub sponsored_data_size: u32,240 /// None - setVariableMetadata is not sponsored241 /// Some(v) - setVariableMetadata is sponsored 242 /// if there is v block between txs243 pub sponsored_data_rate_limit: Option<BlockNumber>,244 pub token_limit: u32,245246 // Timeouts for item types in passed blocks247 pub sponsor_transfer_timeout: u32,248 pub owner_can_transfer: bool,249 pub owner_can_destroy: bool,250}251252impl<BlockNumber: Encode + Decode> Default for CollectionLimits<BlockNumber> {253 fn default() -> Self {254 Self { 255 account_token_ownership_limit: 10_000_000, 256 token_limit: u32::max_value(),257 sponsored_data_size: u32::MAX, 258 sponsored_data_rate_limit: None,259 sponsor_transfer_timeout: 14400,260 owner_can_transfer: true,261 owner_can_destroy: true262 }263 }264}265266#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]267#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]268pub struct ChainLimits {269 pub collection_numbers_limit: u32,270 pub account_token_ownership_limit: u32,271 pub collections_admins_limit: u64,272 pub custom_data_limit: u32,273274 // Timeouts for item types in passed blocks275 pub nft_sponsor_transfer_timeout: u32,276 pub fungible_sponsor_transfer_timeout: u32,277 pub refungible_sponsor_transfer_timeout: u32,278279 // Schema limits280 pub offchain_schema_limit: u32,281 pub variable_on_chain_schema_limit: u32,282 pub const_on_chain_schema_limit: u32,283}284285pub trait WeightInfo {286 fn create_collection() -> Weight;287 fn destroy_collection() -> Weight;288 fn add_to_white_list() -> Weight;289 fn remove_from_white_list() -> Weight;290 fn set_public_access_mode() -> Weight;291 fn set_mint_permission() -> Weight;292 fn change_collection_owner() -> Weight;293 fn add_collection_admin() -> Weight;294 fn remove_collection_admin() -> Weight;295 fn set_collection_sponsor() -> Weight;296 fn confirm_sponsorship() -> Weight;297 fn remove_collection_sponsor() -> Weight;298 fn create_item(s: usize) -> Weight;299 fn burn_item() -> Weight;300 fn transfer() -> Weight;301 fn approve() -> Weight;302 fn transfer_from() -> Weight;303 fn set_offchain_schema() -> Weight;304 fn set_const_on_chain_schema() -> Weight;305 fn set_variable_on_chain_schema() -> Weight;306 fn set_variable_meta_data() -> Weight;307 fn enable_contract_sponsoring() -> Weight;308 fn set_schema_version() -> Weight;309 fn set_chain_limits() -> Weight;310 fn set_contract_sponsoring_rate_limit() -> Weight;311 fn set_variable_meta_data_sponsoring_rate_limit() -> Weight;312 fn toggle_contract_white_list() -> Weight;313 fn add_to_contract_white_list() -> Weight;314 fn remove_from_contract_white_list() -> Weight;315 fn set_collection_limits() -> Weight;316}317318#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]319#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]320pub struct CreateNftData {321 pub const_data: Vec<u8>,322 pub variable_data: Vec<u8>,323}324325#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]326#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]327pub struct CreateFungibleData {328 pub value: u128,329}330331#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]332#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]333pub struct CreateReFungibleData {334 pub const_data: Vec<u8>,335 pub variable_data: Vec<u8>,336 pub pieces: u128,337}338339#[derive(Encode, Decode, Debug, Clone, PartialEq)]340#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]341pub enum CreateItemData {342 NFT(CreateNftData),343 Fungible(CreateFungibleData),344 ReFungible(CreateReFungibleData),345}346347impl CreateItemData {348 pub fn len(&self) -> usize {349 let len = match self {350 CreateItemData::NFT(data) => data.variable_data.len() + data.const_data.len(),351 CreateItemData::ReFungible(data) => data.variable_data.len() + data.const_data.len(),352 _ => 0353 };354 355 return len;356 }357}358359impl From<CreateNftData> for CreateItemData {360 fn from(item: CreateNftData) -> Self {361 CreateItemData::NFT(item)362 }363}364365impl From<CreateReFungibleData> for CreateItemData {366 fn from(item: CreateReFungibleData) -> Self {367 CreateItemData::ReFungible(item)368 }369}370371impl From<CreateFungibleData> for CreateItemData {372 fn from(item: CreateFungibleData) -> Self {373 CreateItemData::Fungible(item)374 }375}376377378decl_error! {379 /// Error for non-fungible-token module.380 pub enum Error for Module<T: Config> {381 /// Total collections bound exceeded.382 TotalCollectionsLimitExceeded,383 /// Decimal_points parameter must be lower than MAX_DECIMAL_POINTS constant, currently it is 30.384 CollectionDecimalPointLimitExceeded, 385 /// Collection name can not be longer than 63 char.386 CollectionNameLimitExceeded, 387 /// Collection description can not be longer than 255 char.388 CollectionDescriptionLimitExceeded, 389 /// Token prefix can not be longer than 15 char.390 CollectionTokenPrefixLimitExceeded,391 /// This collection does not exist.392 CollectionNotFound,393 /// Item not exists.394 TokenNotFound,395 /// Admin not found396 AdminNotFound,397 /// Arithmetic calculation overflow.398 NumOverflow, 399 /// Account already has admin role.400 AlreadyAdmin, 401 /// You do not own this collection.402 NoPermission,403 /// This address is not set as sponsor, use setCollectionSponsor first.404 ConfirmUnsetSponsorFail,405 /// Collection is not in mint mode.406 PublicMintingNotAllowed,407 /// Sender parameter and item owner must be equal.408 MustBeTokenOwner,409 /// Item balance not enough.410 TokenValueTooLow,411 /// Size of item is too large.412 NftSizeLimitExceeded,413 /// No approve found414 ApproveNotFound,415 /// Requested value more than approved.416 TokenValueNotEnough,417 /// Only approved addresses can call this method.418 ApproveRequired,419 /// Address is not in white list.420 AddresNotInWhiteList,421 /// Number of collection admins bound exceeded.422 CollectionAdminsLimitExceeded,423 /// Owned tokens by a single address bound exceeded.424 AddressOwnershipLimitExceeded,425 /// Length of items properties must be greater than 0.426 EmptyArgument,427 /// const_data exceeded data limit.428 TokenConstDataLimitExceeded,429 /// variable_data exceeded data limit.430 TokenVariableDataLimitExceeded,431 /// Not NFT item data used to mint in NFT collection.432 NotNftDataUsedToMintNftCollectionToken,433 /// Not Fungible item data used to mint in Fungible collection.434 NotFungibleDataUsedToMintFungibleCollectionToken,435 /// Not Re Fungible item data used to mint in Re Fungible collection.436 NotReFungibleDataUsedToMintReFungibleCollectionToken,437 /// Unexpected collection type.438 UnexpectedCollectionType,439 /// Can't store metadata in fungible tokens.440 CantStoreMetadataInFungibleTokens,441 /// Collection token limit exceeded442 CollectionTokenLimitExceeded,443 /// Account token limit exceeded per collection444 AccountTokenLimitExceeded,445 /// Collection limit bounds per collection exceeded446 CollectionLimitBoundsExceeded,447 /// Tried to enable permissions which are only permitted to be disabled448 OwnerPermissionsCantBeReverted,449 /// Schema data size limit bound exceeded450 SchemaDataLimitExceeded,451 /// Maximum refungibility exceeded452 WrongRefungiblePieces,453 /// createRefungible should be called with one owner454 BadCreateRefungibleCall,455 }456}457458pub trait Config: system::Config + Sized + pallet_transaction_payment::Config + pallet_contracts::Config {459 type Event: From<Event<Self>> + Into<<Self as system::Config>::Event>;460461 /// Weight information for extrinsics in this pallet.462 type WeightInfo: WeightInfo;463464 type Currency: Currency<Self::AccountId>;465 type CollectionCreationPrice: Get<<<Self as Config>::Currency as Currency<Self::AccountId>>::Balance>;466 type TreasuryAccountId: Get<Self::AccountId>;467}468469#[cfg(feature = "runtime-benchmarks")]470mod benchmarking;471472// #endregion473474// # Used definitions475//476// ## User control levels477//478// chain-controlled - key is uncontrolled by user479// i.e autoincrementing index480// can use non-cryptographic hash481// real - key is controlled by user482// but it is hard to generate enough colliding values, i.e owner of signed txs483// can use non-cryptographic hash484// controlled - key is completly controlled by users485// i.e maps with mutable keys486// should use cryptographic hash487//488// ## User control level downgrade reasons489//490// ?1 - chain-controlled -> controlled491// collections/tokens can be destroyed, resulting in massive holes492// ?2 - chain-controlled -> controlled493// same as ?1, but can be only added, resulting in easier exploitation494// ?3 - real -> controlled495// no confirmation required, so addresses can be easily generated496decl_storage! {497 trait Store for Module<T: Config> as Nft {498499 //#region Private members500 /// Id of next collection501 CreatedCollectionCount: u32;502 /// Used for migrations503 ChainVersion: u64;504 /// Id of last collection token505 /// Collection id (controlled?1)506 ItemListIndex: map hasher(blake2_128_concat) CollectionId => TokenId;507 //#endregion508509 //#region Chain limits struct510 pub ChainLimit get(fn chain_limit) config(): ChainLimits;511 //#endregion512513 //#region Bound counters514 /// Amount of collections destroyed, used for total amount tracking with515 /// CreatedCollectionCount516 DestroyedCollectionCount: u32;517 /// Total amount of account owned tokens (NFTs + RFTs + unique fungibles)518 /// Account id (real)519 pub AccountItemCount get(fn account_item_count): map hasher(twox_64_concat) T::AccountId => u32;520 //#endregion521522 //#region Basic collections523 /// Collection info524 /// Collection id (controlled?1)525 pub CollectionById get(fn collection_id) config(): map hasher(blake2_128_concat) CollectionId => Option<Collection<T>> = None;526 /// List of collection admins527 /// Collection id (controlled?2)528 pub AdminList get(fn admin_list_collection): map hasher(blake2_128_concat) CollectionId => Vec<T::AccountId>;529 /// Whitelisted collection users530 /// Collection id (controlled?2), user id (controlled?3)531 pub WhiteList get(fn white_list): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) T::AccountId => bool;532 //#endregion533534 /// How many of collection items user have535 /// Collection id (controlled?2), account id (real)536 pub Balance get(fn balance_count): double_map hasher(blake2_128_concat) CollectionId, hasher(twox_64_concat) T::AccountId => u128;537538 /// Amount of items which spender can transfer out of owners account (via transferFrom)539 /// Collection id (controlled?2), (token id (controlled ?2) + owner account id (real) + spender account id (controlled?3))540 /// TODO: Off chain worker should remove from this map when token gets removed541 pub Allowances get(fn approved): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) (TokenId, T::AccountId, T::AccountId) => u128;542543 //#region Item collections544 /// Collection id (controlled?2), token id (controlled?1)545 pub NftItemList get(fn nft_item_id) config(): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<NftItemType<T::AccountId>>;546 /// Collection id (controlled?2), owner (controlled?2)547 pub FungibleItemList get(fn fungible_item_id) config(): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) T::AccountId => FungibleItemType;548 /// Collection id (controlled?2), token id (controlled?1)549 pub ReFungibleItemList get(fn refungible_item_id) config(): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<ReFungibleItemType<T::AccountId>>;550 //#endregion551552 //#region Index list553 /// Collection id (controlled?2), tokens owner (controlled?2)554 pub AddressTokens get(fn address_tokens): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) T::AccountId => Vec<TokenId>;555 //#endregion556557 //#region Tokens transfer rate limit baskets558 /// (Collection id (controlled?2), who created (real))559 /// TODO: Off chain worker should remove from this map when collection gets removed560 pub CreateItemBasket get(fn create_item_basket): map hasher(blake2_128_concat) (CollectionId, T::AccountId) => T::BlockNumber;561 /// Collection id (controlled?2), token id (controlled?2)562 pub NftTransferBasket get(fn nft_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => T::BlockNumber;563 /// Collection id (controlled?2), owning user (real)564 pub FungibleTransferBasket get(fn fungible_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(twox_64_concat) T::AccountId => T::BlockNumber;565 /// Collection id (controlled?2), token id (controlled?2)566 pub ReFungibleTransferBasket get(fn refungible_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => T::BlockNumber;567 //#endregion568569 /// Variable metadata sponsoring570 /// Collection id (controlled?2), token id (controlled?2)571 pub VariableMetaDataBasket get(fn variable_meta_data_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<T::BlockNumber> = None;572 573 //#region Contract Sponsorship and Ownership574 /// Contract address (real)575 pub ContractOwner get(fn contract_owner): map hasher(twox_64_concat) T::AccountId => Option<T::AccountId>;576 /// Contract address (real)577 pub ContractSelfSponsoring get(fn contract_self_sponsoring): map hasher(twox_64_concat) T::AccountId => bool;578 /// (Contract address(real), caller (real))579 pub ContractSponsorBasket get(fn contract_sponsor_basket): map hasher(twox_64_concat) (T::AccountId, T::AccountId) => T::BlockNumber;580 /// Contract address (real)581 pub ContractSponsoringRateLimit get(fn contract_sponsoring_rate_limit): map hasher(twox_64_concat) T::AccountId => T::BlockNumber;582 /// Contract address (real)583 pub ContractWhiteListEnabled get(fn contract_white_list_enabled): map hasher(twox_64_concat) T::AccountId => bool; 584 /// Contract address (real) => Whitelisted user (controlled?3)585 pub ContractWhiteList get(fn contract_white_list): double_map hasher(twox_64_concat) T::AccountId, hasher(blake2_128_concat) T::AccountId => bool; 586 //#endregion587 }588 add_extra_genesis {589 build(|config: &GenesisConfig<T>| {590 // Modification of storage591 for (_num, _c) in &config.collection_id {592 <Module<T>>::init_collection(_c);593 }594595 for (_num, _c, _i) in &config.nft_item_id {596 <Module<T>>::init_nft_token(*_c, _i);597 }598599 for (collection_id, account_id, fungible_item) in &config.fungible_item_id {600 <Module<T>>::init_fungible_token(*collection_id, account_id, fungible_item);601 }602603 for (_num, _c, _i) in &config.refungible_item_id {604 <Module<T>>::init_refungible_token(*_c, _i);605 }606 })607 }608}609610decl_event!(611 pub enum Event<T>612 where613 AccountId = <T as system::Config>::AccountId,614 {615 /// New collection was created616 /// 617 /// # Arguments618 /// 619 /// * collection_id: Globally unique identifier of newly created collection.620 /// 621 /// * mode: [CollectionMode] converted into u8.622 /// 623 /// * account_id: Collection owner.624 CollectionCreated(CollectionId, u8, AccountId),625626 /// New item was created.627 /// 628 /// # Arguments629 /// 630 /// * collection_id: Id of the collection where item was created.631 /// 632 /// * item_id: Id of an item. Unique within the collection.633 ///634 /// * recipient: Owner of newly created item 635 ItemCreated(CollectionId, TokenId, AccountId),636637 /// Collection item was burned.638 /// 639 /// # Arguments640 /// 641 /// collection_id.642 /// 643 /// item_id: Identifier of burned NFT.644 ItemDestroyed(CollectionId, TokenId),645646 /// Item was transferred647 ///648 /// * collection_id: Id of collection to which item is belong649 ///650 /// * item_id: Id of an item651 ///652 /// * sender: Original owner of item653 ///654 /// * recipient: New owner of item655 ///656 /// * amount: Always 1 for NFT657 Transfer(CollectionId, TokenId, AccountId, AccountId, u128),658659 /// * collection_id660 ///661 /// * item_id662 ///663 /// * sender664 ///665 /// * spender666 ///667 /// * amount668 Approved(CollectionId, TokenId, AccountId, AccountId, u128),669 }670);671672decl_module! {673 pub struct Module<T: Config> for enum Call 674 where 675 origin: T::Origin676 {677 fn deposit_event() = default;678 type Error = Error<T>;679680 fn on_initialize(now: T::BlockNumber) -> Weight {681 0682 }683684 /// This method creates a Collection of NFTs. Each Token may have multiple properties encoded as an array of bytes of certain length. The initial owner and admin of the collection are set to the address that signed the transaction. Both addresses can be changed later.685 /// 686 /// # Permissions687 /// 688 /// * Anyone.689 /// 690 /// # Arguments691 /// 692 /// * collection_name: UTF-16 string with collection name (limit 64 characters), will be stored as zero-terminated.693 /// 694 /// * collection_description: UTF-16 string with collection description (limit 256 characters), will be stored as zero-terminated.695 /// 696 /// * token_prefix: UTF-8 string with token prefix.697 /// 698 /// * mode: [CollectionMode] collection type and type dependent data.699 // returns collection ID700 #[weight = <T as Config>::WeightInfo::create_collection()]701 #[transactional]702 pub fn create_collection(origin,703 collection_name: Vec<u16>,704 collection_description: Vec<u16>,705 token_prefix: Vec<u8>,706 mode: CollectionMode) -> DispatchResult {707708 // Anyone can create a collection709 let who = ensure_signed(origin)?;710711 // Take a (non-refundable) deposit of collection creation712 let mut imbalance = <<<T as Config>::Currency as Currency<T::AccountId>>::PositiveImbalance>::zero();713 imbalance.subsume(<<T as Config>::Currency as Currency<T::AccountId>>::deposit_creating(714 &T::TreasuryAccountId::get(),715 T::CollectionCreationPrice::get(),716 ));717 <T as Config>::Currency::settle(718 &who,719 imbalance,720 WithdrawReasons::TRANSFER,721 ExistenceRequirement::KeepAlive,722 ).map_err(|_| Error::<T>::NoPermission)?;723724 let decimal_points = match mode {725 CollectionMode::Fungible(points) => points,726 _ => 0727 };728729 let chain_limit = ChainLimit::get();730731 let created_count = CreatedCollectionCount::get();732 let destroyed_count = DestroyedCollectionCount::get();733734 // bound Total number of collections735 ensure!(created_count - destroyed_count < chain_limit.collection_numbers_limit, Error::<T>::TotalCollectionsLimitExceeded);736737 // check params738 ensure!(decimal_points <= MAX_DECIMAL_POINTS, Error::<T>::CollectionDecimalPointLimitExceeded);739 ensure!(collection_name.len() <= 64, Error::<T>::CollectionNameLimitExceeded);740 ensure!(collection_description.len() <= 256, Error::<T>::CollectionDescriptionLimitExceeded);741 ensure!(token_prefix.len() <= 16, Error::<T>::CollectionTokenPrefixLimitExceeded);742743 // Generate next collection ID744 let next_id = created_count745 .checked_add(1)746 .ok_or(Error::<T>::NumOverflow)?;747748 CreatedCollectionCount::put(next_id);749750 let limits = CollectionLimits {751 sponsored_data_size: chain_limit.custom_data_limit,752 ..Default::default()753 };754755 // Create new collection756 let new_collection = Collection {757 owner: who.clone(),758 name: collection_name,759 mode: mode.clone(),760 mint_mode: false,761 access: AccessMode::Normal,762 description: collection_description,763 decimal_points: decimal_points,764 token_prefix: token_prefix,765 offchain_schema: Vec::new(),766 schema_version: SchemaVersion::ImageURL,767 sponsorship: SponsorshipState::Disabled,768 variable_on_chain_schema: Vec::new(),769 const_on_chain_schema: Vec::new(),770 limits,771 };772773 // Add new collection to map774 <CollectionById<T>>::insert(next_id, new_collection);775776 // call event777 Self::deposit_event(RawEvent::CollectionCreated(next_id, mode.into(), who.clone()));778779 Ok(())780 }781782 /// **DANGEROUS**: Destroys collection and all NFTs within this collection. Users irrecoverably lose their assets and may lose real money.783 /// 784 /// # Permissions785 /// 786 /// * Collection Owner.787 /// 788 /// # Arguments789 /// 790 /// * collection_id: collection to destroy.791 #[weight = <T as Config>::WeightInfo::destroy_collection()]792 #[transactional]793 pub fn destroy_collection(origin, collection_id: CollectionId) -> DispatchResult {794795 let sender = ensure_signed(origin)?;796 let collection = Self::get_collection(collection_id)?;797 Self::check_owner_permissions(&collection, sender)?;798 if !collection.limits.owner_can_destroy {799 fail!(Error::<T>::NoPermission);800 }801802 <AddressTokens<T>>::remove_prefix(collection_id);803 <Allowances<T>>::remove_prefix(collection_id);804 <Balance<T>>::remove_prefix(collection_id);805 <ItemListIndex>::remove(collection_id);806 <AdminList<T>>::remove(collection_id);807 <CollectionById<T>>::remove(collection_id);808 <WhiteList<T>>::remove_prefix(collection_id);809810 <NftItemList<T>>::remove_prefix(collection_id);811 <FungibleItemList<T>>::remove_prefix(collection_id);812 <ReFungibleItemList<T>>::remove_prefix(collection_id);813814 <NftTransferBasket<T>>::remove_prefix(collection_id);815 <FungibleTransferBasket<T>>::remove_prefix(collection_id);816 <ReFungibleTransferBasket<T>>::remove_prefix(collection_id);817818 <VariableMetaDataBasket<T>>::remove_prefix(collection_id);819820 DestroyedCollectionCount::put(DestroyedCollectionCount::get()821 .checked_add(1)822 .ok_or(Error::<T>::NumOverflow)?);823824 Ok(())825 }826827 /// Add an address to white list.828 /// 829 /// # Permissions830 /// 831 /// * Collection Owner832 /// * Collection Admin833 /// 834 /// # Arguments835 /// 836 /// * collection_id.837 /// 838 /// * address.839 #[weight = <T as Config>::WeightInfo::add_to_white_list()]840 #[transactional]841 pub fn add_to_white_list(origin, collection_id: CollectionId, address: T::AccountId) -> DispatchResult{842843 let sender = ensure_signed(origin)?;844 let collection = Self::get_collection(collection_id)?;845 Self::check_owner_or_admin_permissions(&collection, sender)?;846847 <WhiteList<T>>::insert(collection_id, address, true);848 849 Ok(())850 }851852 /// Remove an address from white list.853 /// 854 /// # Permissions855 /// 856 /// * Collection Owner857 /// * Collection Admin858 /// 859 /// # Arguments860 /// 861 /// * collection_id.862 /// 863 /// * address.864 #[weight = <T as Config>::WeightInfo::remove_from_white_list()]865 #[transactional]866 pub fn remove_from_white_list(origin, collection_id: CollectionId, address: T::AccountId) -> DispatchResult{867868 let sender = ensure_signed(origin)?;869 let collection = Self::get_collection(collection_id)?;870 Self::check_owner_or_admin_permissions(&collection, sender)?;871872 <WhiteList<T>>::remove(collection_id, address);873874 Ok(())875 }876877 /// Toggle between normal and white list access for the methods with access for `Anyone`.878 /// 879 /// # Permissions880 /// 881 /// * Collection Owner.882 /// 883 /// # Arguments884 /// 885 /// * collection_id.886 /// 887 /// * mode: [AccessMode]888 #[weight = <T as Config>::WeightInfo::set_public_access_mode()]889 #[transactional]890 pub fn set_public_access_mode(origin, collection_id: CollectionId, mode: AccessMode) -> DispatchResult891 {892 let sender = ensure_signed(origin)?;893894 let mut target_collection = Self::get_collection(collection_id)?;895 Self::check_owner_permissions(&target_collection, sender)?;896 target_collection.access = mode;897 Self::save_collection(target_collection);898899 Ok(())900 }901902 /// Allows Anyone to create tokens if:903 /// * White List is enabled, and904 /// * Address is added to white list, and905 /// * This method was called with True parameter906 /// 907 /// # Permissions908 /// * Collection Owner909 ///910 /// # Arguments911 /// 912 /// * collection_id.913 /// 914 /// * mint_permission: Boolean parameter. If True, allows minting to Anyone with conditions above.915 #[weight = <T as Config>::WeightInfo::set_mint_permission()]916 #[transactional]917 pub fn set_mint_permission(origin, collection_id: CollectionId, mint_permission: bool) -> DispatchResult918 {919 let sender = ensure_signed(origin)?;920921 let mut target_collection = Self::get_collection(collection_id)?;922 Self::check_owner_permissions(&target_collection, sender)?;923 target_collection.mint_mode = mint_permission;924 Self::save_collection(target_collection);925926 Ok(())927 }928929 /// Change the owner of the collection.930 /// 931 /// # Permissions932 /// 933 /// * Collection Owner.934 /// 935 /// # Arguments936 /// 937 /// * collection_id.938 /// 939 /// * new_owner.940 #[weight = <T as Config>::WeightInfo::change_collection_owner()]941 #[transactional]942 pub fn change_collection_owner(origin, collection_id: CollectionId, new_owner: T::AccountId) -> DispatchResult {943944 let sender = ensure_signed(origin)?;945 let mut target_collection = Self::get_collection(collection_id)?;946 Self::check_owner_permissions(&target_collection, sender)?;947 target_collection.owner = new_owner;948 Self::save_collection(target_collection);949950 Ok(())951 }952953 /// Adds an admin of the Collection.954 /// NFT Collection can be controlled by multiple admin addresses (some which can also be servers, for example). Admins can issue and burn NFTs, as well as add and remove other admins, but cannot change NFT or Collection ownership. 955 /// 956 /// # Permissions957 /// 958 /// * Collection Owner.959 /// * Collection Admin.960 /// 961 /// # Arguments962 /// 963 /// * collection_id: ID of the Collection to add admin for.964 /// 965 /// * new_admin_id: Address of new admin to add.966 #[weight = <T as Config>::WeightInfo::add_collection_admin()]967 #[transactional]968 pub fn add_collection_admin(origin, collection_id: CollectionId, new_admin_id: T::AccountId) -> DispatchResult {969970 let sender = ensure_signed(origin)?;971 let collection = Self::get_collection(collection_id)?;972 Self::check_owner_or_admin_permissions(&collection, sender)?;973 let mut admin_arr = <AdminList<T>>::get(collection_id);974975 match admin_arr.binary_search(&new_admin_id) {976 Ok(_) => {},977 Err(idx) => {978 let limits = ChainLimit::get();979 ensure!(admin_arr.len() < limits.collections_admins_limit as usize, Error::<T>::CollectionAdminsLimitExceeded);980 admin_arr.insert(idx, new_admin_id);981 <AdminList<T>>::insert(collection_id, admin_arr);982 }983 }984 Ok(())985 }986987 /// Remove admin address of the Collection. An admin address can remove itself. List of admins may become empty, in which case only Collection Owner will be able to add an Admin.988 ///989 /// # Permissions990 /// 991 /// * Collection Owner.992 /// * Collection Admin.993 /// 994 /// # Arguments995 /// 996 /// * collection_id: ID of the Collection to remove admin for.997 /// 998 /// * account_id: Address of admin to remove.999 #[weight = <T as Config>::WeightInfo::remove_collection_admin()]1000 #[transactional]1001 pub fn remove_collection_admin(origin, collection_id: CollectionId, account_id: T::AccountId) -> DispatchResult {10021003 let sender = ensure_signed(origin)?;1004 let collection = Self::get_collection(collection_id)?;1005 Self::check_owner_or_admin_permissions(&collection, sender)?;1006 let mut admin_arr = <AdminList<T>>::get(collection_id);10071008 match admin_arr.binary_search(&account_id) {1009 Ok(idx) => {1010 admin_arr.remove(idx);1011 <AdminList<T>>::insert(collection_id, admin_arr);1012 },1013 Err(_) => {}1014 }1015 Ok(())1016 }10171018 /// # Permissions1019 /// 1020 /// * Collection Owner1021 /// 1022 /// # Arguments1023 /// 1024 /// * collection_id.1025 /// 1026 /// * new_sponsor.1027 #[weight = <T as Config>::WeightInfo::set_collection_sponsor()]1028 #[transactional]1029 pub fn set_collection_sponsor(origin, collection_id: CollectionId, new_sponsor: T::AccountId) -> DispatchResult {10301031 let sender = ensure_signed(origin)?;1032 let mut target_collection = Self::get_collection(collection_id)?;1033 Self::check_owner_permissions(&target_collection, sender)?;10341035 target_collection.sponsorship = SponsorshipState::Unconfirmed(new_sponsor);1036 Self::save_collection(target_collection);10371038 Ok(())1039 }10401041 /// # Permissions1042 /// 1043 /// * Sponsor.1044 /// 1045 /// # Arguments1046 /// 1047 /// * collection_id.1048 #[weight = <T as Config>::WeightInfo::confirm_sponsorship()]1049 #[transactional]1050 pub fn confirm_sponsorship(origin, collection_id: CollectionId) -> DispatchResult {10511052 let sender = ensure_signed(origin)?;10531054 let mut target_collection = Self::get_collection(collection_id)?;1055 ensure!(1056 target_collection.sponsorship.pending_sponsor() == Some(&sender),1057 Error::<T>::ConfirmUnsetSponsorFail1058 );10591060 target_collection.sponsorship = SponsorshipState::Confirmed(sender);1061 Self::save_collection(target_collection);10621063 Ok(())1064 }10651066 /// Switch back to pay-per-own-transaction model.1067 ///1068 /// # Permissions1069 ///1070 /// * Collection owner.1071 /// 1072 /// # Arguments1073 /// 1074 /// * collection_id.1075 #[weight = <T as Config>::WeightInfo::remove_collection_sponsor()]1076 #[transactional]1077 pub fn remove_collection_sponsor(origin, collection_id: CollectionId) -> DispatchResult {10781079 let sender = ensure_signed(origin)?;10801081 let mut target_collection = Self::get_collection(collection_id)?;1082 Self::check_owner_permissions(&target_collection, sender)?;10831084 target_collection.sponsorship = SponsorshipState::Disabled;1085 Self::save_collection(target_collection);10861087 Ok(())1088 }10891090 /// This method creates a concrete instance of NFT Collection created with CreateCollection method.1091 /// 1092 /// # Permissions1093 /// 1094 /// * Collection Owner.1095 /// * Collection Admin.1096 /// * Anyone if1097 /// * White List is enabled, and1098 /// * Address is added to white list, and1099 /// * MintPermission is enabled (see SetMintPermission method)1100 /// 1101 /// # Arguments1102 /// 1103 /// * collection_id: ID of the collection.1104 /// 1105 /// * owner: Address, initial owner of the NFT.1106 ///1107 /// * data: Token data to store on chain.1108 // #[weight =1109 // (130_000_000 as Weight)1110 // .saturating_add((2135 as Weight).saturating_mul((properties.len() as u64) as Weight))1111 // .saturating_add(RocksDbWeight::get().reads(10 as Weight))1112 // .saturating_add(RocksDbWeight::get().writes(8 as Weight))]11131114 #[weight = <T as Config>::WeightInfo::create_item(data.len())]1115 #[transactional]1116 pub fn create_item(origin, collection_id: CollectionId, owner: T::AccountId, data: CreateItemData) -> DispatchResult {1117 let sender = ensure_signed(origin)?;1118 Self::create_item_internal(sender, collection_id, owner, data)1119 }11201121 /// This method creates multiple items in a collection created with CreateCollection method.1122 /// 1123 /// # Permissions1124 /// 1125 /// * Collection Owner.1126 /// * Collection Admin.1127 /// * Anyone if1128 /// * White List is enabled, and1129 /// * Address is added to white list, and1130 /// * MintPermission is enabled (see SetMintPermission method)1131 /// 1132 /// # Arguments1133 /// 1134 /// * collection_id: ID of the collection.1135 /// 1136 /// * itemsData: Array items properties. Each property is an array of bytes itself, see [create_item].1137 /// 1138 /// * owner: Address, initial owner of the NFT.1139 #[weight = <T as Config>::WeightInfo::create_item(items_data.into_iter()1140 .map(|data| { data.len() })1141 .sum())]1142 #[transactional]1143 pub fn create_multiple_items(origin, collection_id: CollectionId, owner: T::AccountId, items_data: Vec<CreateItemData>) -> DispatchResult {11441145 ensure!(items_data.len() > 0, Error::<T>::EmptyArgument);1146 let sender = ensure_signed(origin)?;11471148 let target_collection = Self::get_collection(collection_id)?;11491150 Self::can_create_items_in_collection(&target_collection, &sender, &owner, items_data.len() as u32)?;11511152 for data in &items_data {1153 Self::validate_create_item_args(&target_collection, data)?;1154 }1155 for data in &items_data {1156 Self::create_item_no_validation(&target_collection, owner.clone(), data.clone())?;1157 }11581159 Ok(())1160 }11611162 /// Destroys a concrete instance of NFT.1163 /// 1164 /// # Permissions1165 /// 1166 /// * Collection Owner.1167 /// * Collection Admin.1168 /// * Current NFT Owner.1169 /// 1170 /// # Arguments1171 /// 1172 /// * collection_id: ID of the collection.1173 /// 1174 /// * item_id: ID of NFT to burn.1175 #[weight = <T as Config>::WeightInfo::burn_item()]1176 #[transactional]1177 pub fn burn_item(origin, collection_id: CollectionId, item_id: TokenId, value: u128) -> DispatchResult {11781179 let sender = ensure_signed(origin)?;11801181 // Transfer permissions check1182 let target_collection = Self::get_collection(collection_id)?;1183 ensure!(1184 Self::is_item_owner(sender.clone(), &target_collection, item_id) ||1185 (1186 target_collection.limits.owner_can_transfer &&1187 Self::is_owner_or_admin_permissions(&target_collection, sender.clone())1188 ),1189 Error::<T>::NoPermission1190 );11911192 if target_collection.access == AccessMode::WhiteList {1193 Self::check_white_list(&target_collection, &sender)?;1194 }11951196 match target_collection.mode1197 {1198 CollectionMode::NFT => Self::burn_nft_item(&target_collection, item_id)?,1199 CollectionMode::Fungible(_) => Self::burn_fungible_item(&sender, &target_collection, value)?,1200 CollectionMode::ReFungible => Self::burn_refungible_item(&target_collection, item_id, &sender)?,1201 _ => ()1202 };12031204 // call event1205 Self::deposit_event(RawEvent::ItemDestroyed(target_collection.id, item_id));12061207 Ok(())1208 }12091210 /// Change ownership of the token.1211 /// 1212 /// # Permissions1213 /// 1214 /// * Collection Owner1215 /// * Collection Admin1216 /// * Current NFT owner1217 ///1218 /// # Arguments1219 /// 1220 /// * recipient: Address of token recipient.1221 /// 1222 /// * collection_id.1223 /// 1224 /// * item_id: ID of the item1225 /// * Non-Fungible Mode: Required.1226 /// * Fungible Mode: Ignored.1227 /// * Re-Fungible Mode: Required.1228 /// 1229 /// * value: Amount to transfer.1230 /// * Non-Fungible Mode: Ignored1231 /// * Fungible Mode: Must specify transferred amount1232 /// * Re-Fungible Mode: Must specify transferred portion (between 0 and 1)1233 #[weight = <T as Config>::WeightInfo::transfer()]1234 #[transactional]1235 pub fn transfer(origin, recipient: T::AccountId, collection_id: CollectionId, item_id: TokenId, value: u128) -> DispatchResult {1236 let sender = ensure_signed(origin)?;1237 let collection = Self::get_collection(collection_id)?;12381239 Self::transfer_internal(sender, recipient, &collection, item_id, value)1240 }12411242 /// Set, change, or remove approved address to transfer the ownership of the NFT.1243 /// 1244 /// # Permissions1245 /// 1246 /// * Collection Owner1247 /// * Collection Admin1248 /// * Current NFT owner1249 /// 1250 /// # Arguments1251 /// 1252 /// * approved: Address that is approved to transfer this NFT or zero (if needed to remove approval).1253 /// 1254 /// * collection_id.1255 /// 1256 /// * item_id: ID of the item.1257 #[weight = <T as Config>::WeightInfo::approve()]1258 #[transactional]1259 pub fn approve(origin, spender: T::AccountId, collection_id: CollectionId, item_id: TokenId, amount: u128) -> DispatchResult {12601261 let sender = ensure_signed(origin)?;1262 let target_collection = Self::get_collection(collection_id)?;12631264 Self::token_exists(&target_collection, item_id)?;12651266 // Transfer permissions check1267 let bypasses_limits = target_collection.limits.owner_can_transfer &&1268 Self::is_owner_or_admin_permissions(1269 &target_collection,1270 sender.clone(),1271 );12721273 let allowance_limit = if bypasses_limits {1274 None1275 } else if let Some(amount) = Self::owned_amount(1276 sender.clone(),1277 &target_collection,1278 item_id,1279 ) {1280 Some(amount)1281 } else {1282 fail!(Error::<T>::NoPermission);1283 };12841285 if target_collection.access == AccessMode::WhiteList {1286 Self::check_white_list(&target_collection, &sender)?;1287 Self::check_white_list(&target_collection, &spender)?;1288 }12891290 let allowance: u128 = amount1291 .checked_add(<Allowances<T>>::get(collection_id, (item_id, &sender, &spender)))1292 .ok_or(Error::<T>::NumOverflow)?;1293 if let Some(limit) = allowance_limit {1294 ensure!(limit >= allowance, Error::<T>::TokenValueTooLow);1295 }1296 <Allowances<T>>::insert(collection_id, (item_id, sender.clone(), spender.clone()), allowance);12971298 Self::deposit_event(RawEvent::Approved(target_collection.id, item_id, sender, spender, allowance));1299 Ok(())1300 }1301 1302 /// Change ownership of a NFT on behalf of the owner. See Approve method for additional information. After this method executes, the approval is removed so that the approved address will not be able to transfer this NFT again from this owner.1303 /// 1304 /// # Permissions1305 /// * Collection Owner1306 /// * Collection Admin1307 /// * Current NFT owner1308 /// * Address approved by current NFT owner1309 /// 1310 /// # Arguments1311 /// 1312 /// * from: Address that owns token.1313 /// 1314 /// * recipient: Address of token recipient.1315 /// 1316 /// * collection_id.1317 /// 1318 /// * item_id: ID of the item.1319 /// 1320 /// * value: Amount to transfer.1321 #[weight = <T as Config>::WeightInfo::transfer_from()]1322 #[transactional]1323 pub fn transfer_from(origin, from: T::AccountId, recipient: T::AccountId, collection_id: CollectionId, item_id: TokenId, value: u128 ) -> DispatchResult {13241325 let sender = ensure_signed(origin)?;1326 let target_collection = Self::get_collection(collection_id)?;13271328 // Check approval1329 let approval: u128 = <Allowances<T>>::get(collection_id, (item_id, &from, &sender));13301331 // Limits check1332 Self::is_correct_transfer(&target_collection, &recipient)?;13331334 // Transfer permissions check 1335 ensure!(1336 approval >= value || 1337 (1338 target_collection.limits.owner_can_transfer &&1339 Self::is_owner_or_admin_permissions(&target_collection, sender.clone())1340 ),1341 Error::<T>::NoPermission1342 );13431344 if target_collection.access == AccessMode::WhiteList {1345 Self::check_white_list(&target_collection, &sender)?;1346 Self::check_white_list(&target_collection, &recipient)?;1347 }13481349 // Reduce approval by transferred amount or remove if remaining approval drops to 01350 if approval.saturating_sub(value) > 0 {1351 <Allowances<T>>::insert(collection_id, (item_id, &from, &sender), approval - value);1352 }1353 else {1354 <Allowances<T>>::remove(collection_id, (item_id, &from, &sender));1355 }13561357 match target_collection.mode1358 {1359 CollectionMode::NFT => Self::transfer_nft(&target_collection, item_id, from.clone(), recipient.clone())?,1360 CollectionMode::Fungible(_) => Self::transfer_fungible(&target_collection, value, &from, &recipient)?,1361 CollectionMode::ReFungible => Self::transfer_refungible(&target_collection, item_id, value, from.clone(), recipient.clone())?,1362 _ => ()1363 };13641365 Self::deposit_event(RawEvent::Transfer(target_collection.id, item_id, from, recipient, value));1366 Ok(())1367 }13681369 // #[weight = 0]1370 // pub fn safe_transfer_from(origin, collection_id: CollectionId, item_id: TokenId, new_owner: T::AccountId) -> DispatchResult {13711372 // // let no_perm_mes = "You do not have permissions to modify this collection";1373 // // ensure!(<ApprovedList<T>>::contains_key((collection_id, item_id)), no_perm_mes);1374 // // let list_itm = <ApprovedList<T>>::get((collection_id, item_id));1375 // // ensure!(list_itm.contains(&new_owner.clone()), no_perm_mes);13761377 // // // on_nft_received call13781379 // // Self::transfer(origin, collection_id, item_id, new_owner)?;13801381 // Ok(())1382 // }13831384 /// Set off-chain data schema.1385 /// 1386 /// # Permissions1387 /// 1388 /// * Collection Owner1389 /// * Collection Admin1390 /// 1391 /// # Arguments1392 /// 1393 /// * collection_id.1394 /// 1395 /// * schema: String representing the offchain data schema.1396 #[weight = <T as Config>::WeightInfo::set_variable_meta_data()]1397 #[transactional]1398 pub fn set_variable_meta_data (1399 origin,1400 collection_id: CollectionId,1401 item_id: TokenId,1402 data: Vec<u8>1403 ) -> DispatchResult {1404 let sender = ensure_signed(origin)?;1405 1406 let target_collection = Self::get_collection(collection_id)?;1407 Self::token_exists(&target_collection, item_id)?;14081409 ensure!(ChainLimit::get().custom_data_limit >= data.len() as u32, Error::<T>::TokenVariableDataLimitExceeded);14101411 // Modify permissions check1412 ensure!(Self::is_item_owner(sender.clone(), &target_collection, item_id) ||1413 Self::is_owner_or_admin_permissions(&target_collection, sender.clone()),1414 Error::<T>::NoPermission);14151416 match target_collection.mode1417 {1418 CollectionMode::NFT => Self::set_nft_variable_data(&target_collection, item_id, data)?,1419 CollectionMode::ReFungible => Self::set_re_fungible_variable_data(&target_collection, item_id, data)?,1420 CollectionMode::Fungible(_) => fail!(Error::<T>::CantStoreMetadataInFungibleTokens),1421 _ => fail!(Error::<T>::UnexpectedCollectionType)1422 };14231424 Ok(())1425 }1426 1427 /// Set schema standard1428 /// ImageURL1429 /// Unique1430 /// 1431 /// # Permissions1432 /// 1433 /// * Collection Owner1434 /// * Collection Admin1435 /// 1436 /// # Arguments1437 /// 1438 /// * collection_id.1439 /// 1440 /// * schema: SchemaVersion: enum1441 #[weight = <T as Config>::WeightInfo::set_schema_version()]1442 #[transactional]1443 pub fn set_schema_version(1444 origin,1445 collection_id: CollectionId,1446 version: SchemaVersion1447 ) -> DispatchResult {1448 let sender = ensure_signed(origin)?;1449 let mut target_collection = Self::get_collection(collection_id)?;1450 Self::check_owner_or_admin_permissions(&target_collection, sender.clone())?;1451 target_collection.schema_version = version;1452 Self::save_collection(target_collection);14531454 Ok(())1455 }14561457 /// Set off-chain data schema.1458 /// 1459 /// # Permissions1460 /// 1461 /// * Collection Owner1462 /// * Collection Admin1463 /// 1464 /// # Arguments1465 /// 1466 /// * collection_id.1467 /// 1468 /// * schema: String representing the offchain data schema.1469 #[weight = <T as Config>::WeightInfo::set_offchain_schema()]1470 #[transactional]1471 pub fn set_offchain_schema(1472 origin,1473 collection_id: CollectionId,1474 schema: Vec<u8>1475 ) -> DispatchResult {1476 let sender = ensure_signed(origin)?;1477 let mut target_collection = Self::get_collection(collection_id)?;1478 Self::check_owner_or_admin_permissions(&target_collection, sender.clone())?;14791480 // check schema limit1481 ensure!(schema.len() as u32 <= ChainLimit::get().offchain_schema_limit, "");14821483 target_collection.offchain_schema = schema;1484 Self::save_collection(target_collection);14851486 Ok(())1487 }14881489 /// Set const on-chain data schema.1490 /// 1491 /// # Permissions1492 /// 1493 /// * Collection Owner1494 /// * Collection Admin1495 /// 1496 /// # Arguments1497 /// 1498 /// * collection_id.1499 /// 1500 /// * schema: String representing the const on-chain data schema.1501 #[weight = <T as Config>::WeightInfo::set_const_on_chain_schema()]1502 #[transactional]1503 pub fn set_const_on_chain_schema (1504 origin,1505 collection_id: CollectionId,1506 schema: Vec<u8>1507 ) -> DispatchResult {1508 let sender = ensure_signed(origin)?;1509 let mut target_collection = Self::get_collection(collection_id)?;1510 Self::check_owner_or_admin_permissions(&target_collection, sender.clone())?;15111512 // check schema limit1513 ensure!(schema.len() as u32 <= ChainLimit::get().const_on_chain_schema_limit, "");15141515 target_collection.const_on_chain_schema = schema;1516 Self::save_collection(target_collection);15171518 Ok(())1519 }15201521 /// Set variable on-chain data schema.1522 /// 1523 /// # Permissions1524 /// 1525 /// * Collection Owner1526 /// * Collection Admin1527 /// 1528 /// # Arguments1529 /// 1530 /// * collection_id.1531 /// 1532 /// * schema: String representing the variable on-chain data schema.1533 #[weight = <T as Config>::WeightInfo::set_const_on_chain_schema()]1534 #[transactional]1535 pub fn set_variable_on_chain_schema (1536 origin,1537 collection_id: CollectionId,1538 schema: Vec<u8>1539 ) -> DispatchResult {1540 let sender = ensure_signed(origin)?;1541 let mut target_collection = Self::get_collection(collection_id)?;1542 Self::check_owner_or_admin_permissions(&target_collection, sender.clone())?;15431544 // check schema limit1545 ensure!(schema.len() as u32 <= ChainLimit::get().variable_on_chain_schema_limit, "");15461547 target_collection.variable_on_chain_schema = schema;1548 Self::save_collection(target_collection);15491550 Ok(())1551 }15521553 // Sudo permissions function1554 #[weight = <T as Config>::WeightInfo::set_chain_limits()]1555 #[transactional]1556 pub fn set_chain_limits(1557 origin,1558 limits: ChainLimits1559 ) -> DispatchResult {15601561 #[cfg(not(feature = "runtime-benchmarks"))]1562 ensure_root(origin)?;15631564 <ChainLimit>::put(limits);1565 Ok(())1566 }15671568 /// Enable smart contract self-sponsoring.1569 /// 1570 /// # Permissions1571 /// 1572 /// * Contract Owner1573 /// 1574 /// # Arguments1575 /// 1576 /// * contract address1577 /// * enable flag1578 /// 1579 #[weight = <T as Config>::WeightInfo::enable_contract_sponsoring()]1580 #[transactional]1581 pub fn enable_contract_sponsoring(1582 origin,1583 contract_address: T::AccountId,1584 enable: bool1585 ) -> DispatchResult {15861587 let sender = ensure_signed(origin)?;15881589 #[cfg(feature = "runtime-benchmarks")]1590 <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());15911592 Self::ensure_contract_owned(sender, &contract_address)?;15931594 <ContractSelfSponsoring<T>>::insert(contract_address, enable);1595 Ok(())1596 }15971598 /// Set the rate limit for contract sponsoring to specified number of blocks.1599 /// 1600 /// If not set (has the default value of 0 blocks), the sponsoring will be disabled. 1601 /// If set to the number B (for blocks), the transactions will be sponsored with a rate 1602 /// limit of B, i.e. fees for every transaction sent to this smart contract will be paid 1603 /// from contract endowment if there are at least B blocks between such transactions. 1604 /// Nonetheless, if transactions are sent more frequently, the fees are paid by the sender.1605 /// 1606 /// # Permissions1607 /// 1608 /// * Contract Owner1609 /// 1610 /// # Arguments1611 /// 1612 /// -`contract_address`: Address of the contract to sponsor1613 /// -`rate_limit`: Number of blocks to wait until the next sponsored transaction is allowed1614 /// 1615 #[weight = <T as Config>::WeightInfo::set_contract_sponsoring_rate_limit()]1616 #[transactional]1617 pub fn set_contract_sponsoring_rate_limit(1618 origin,1619 contract_address: T::AccountId,1620 rate_limit: T::BlockNumber1621 ) -> DispatchResult {1622 let sender = ensure_signed(origin)?;16231624 #[cfg(feature = "runtime-benchmarks")]1625 <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());16261627 Self::ensure_contract_owned(sender, &contract_address)?;1628 <ContractSponsoringRateLimit<T>>::insert(contract_address, rate_limit);1629 Ok(())1630 }16311632 /// Enable the white list for a contract. Only addresses added to the white list with addToContractWhiteList will be able to call this smart contract.1633 /// 1634 /// # Permissions1635 /// 1636 /// * Address that deployed smart contract.1637 /// 1638 /// # Arguments1639 /// 1640 /// -`contract_address`: Address of the contract.1641 /// 1642 /// - `enable`: . 1643 #[weight = <T as Config>::WeightInfo::toggle_contract_white_list()]1644 #[transactional]1645 pub fn toggle_contract_white_list(1646 origin,1647 contract_address: T::AccountId,1648 enable: bool1649 ) -> DispatchResult {1650 let sender = ensure_signed(origin)?;16511652 #[cfg(feature = "runtime-benchmarks")]1653 <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());16541655 Self::ensure_contract_owned(sender, &contract_address)?;1656 if enable {1657 <ContractWhiteListEnabled<T>>::insert(contract_address, true);1658 } else {1659 <ContractWhiteListEnabled<T>>::remove(contract_address);1660 }1661 Ok(())1662 }1663 1664 /// Add an address to smart contract white list.1665 /// 1666 /// # Permissions1667 /// 1668 /// * Address that deployed smart contract.1669 /// 1670 /// # Arguments1671 /// 1672 /// -`contract_address`: Address of the contract.1673 ///1674 /// -`account_address`: Address to add.1675 #[weight = <T as Config>::WeightInfo::add_to_contract_white_list()]1676 #[transactional]1677 pub fn add_to_contract_white_list(1678 origin,1679 contract_address: T::AccountId,1680 account_address: T::AccountId1681 ) -> DispatchResult {1682 let sender = ensure_signed(origin)?;16831684 #[cfg(feature = "runtime-benchmarks")]1685 <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());1686 1687 Self::ensure_contract_owned(sender, &contract_address)?; 1688 <ContractWhiteList<T>>::insert(contract_address, account_address, true);1689 Ok(())1690 }16911692 /// Remove an address from smart contract white list.1693 /// 1694 /// # Permissions1695 /// 1696 /// * Address that deployed smart contract.1697 /// 1698 /// # Arguments1699 /// 1700 /// -`contract_address`: Address of the contract.1701 ///1702 /// -`account_address`: Address to remove.1703 #[weight = <T as Config>::WeightInfo::remove_from_contract_white_list()]1704 #[transactional]1705 pub fn remove_from_contract_white_list(1706 origin,1707 contract_address: T::AccountId,1708 account_address: T::AccountId1709 ) -> DispatchResult {1710 let sender = ensure_signed(origin)?;17111712 #[cfg(feature = "runtime-benchmarks")]1713 <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());17141715 Self::ensure_contract_owned(sender, &contract_address)?;1716 <ContractWhiteList<T>>::remove(contract_address, account_address);1717 Ok(())1718 }17191720 #[weight = <T as Config>::WeightInfo::set_collection_limits()]1721 #[transactional]1722 pub fn set_collection_limits(1723 origin,1724 collection_id: u32,1725 new_limits: CollectionLimits<T::BlockNumber>,1726 ) -> DispatchResult {1727 let sender = ensure_signed(origin)?;1728 let mut target_collection = Self::get_collection(collection_id)?;1729 Self::check_owner_permissions(&target_collection, sender.clone())?;1730 let old_limits = &target_collection.limits;1731 let chain_limits = ChainLimit::get();17321733 // collection bounds1734 ensure!(new_limits.sponsor_transfer_timeout <= MAX_SPONSOR_TIMEOUT &&1735 new_limits.account_token_ownership_limit <= MAX_TOKEN_OWNERSHIP && 1736 new_limits.sponsored_data_size <= chain_limits.custom_data_limit,1737 Error::<T>::CollectionLimitBoundsExceeded);17381739 // token_limit check prev1740 ensure!(old_limits.token_limit >= new_limits.token_limit, Error::<T>::CollectionTokenLimitExceeded);1741 ensure!(new_limits.token_limit > 0, Error::<T>::CollectionTokenLimitExceeded);17421743 ensure!(1744 (old_limits.owner_can_transfer || !new_limits.owner_can_transfer) &&1745 (old_limits.owner_can_destroy || !new_limits.owner_can_destroy),1746 Error::<T>::OwnerPermissionsCantBeReverted,1747 );17481749 target_collection.limits = new_limits;1750 Self::save_collection(target_collection);17511752 Ok(())1753 } 1754 }1755}17561757impl<T: Config> Module<T> {1758 pub fn create_item_internal(sender: T::AccountId, collection_id: CollectionId, owner: T::AccountId, data: CreateItemData) -> DispatchResult {1759 let target_collection = Self::get_collection(collection_id)?;17601761 Self::can_create_items_in_collection(&target_collection, &sender, &owner, 1)?;1762 Self::validate_create_item_args(&target_collection, &data)?;1763 Self::create_item_no_validation(&target_collection, owner, data)?;17641765 Ok(())1766 }17671768 pub fn transfer_internal(sender: T::AccountId, recipient: T::AccountId, target_collection: &CollectionHandle<T>, item_id: TokenId, value: u128) -> DispatchResult {1769 // Limits check1770 Self::is_correct_transfer(target_collection, &recipient)?;17711772 // Transfer permissions check1773 ensure!(Self::is_item_owner(sender.clone(), target_collection, item_id) ||1774 Self::is_owner_or_admin_permissions(target_collection, sender.clone()),1775 Error::<T>::NoPermission);17761777 if target_collection.access == AccessMode::WhiteList {1778 Self::check_white_list(target_collection, &sender)?;1779 Self::check_white_list(target_collection, &recipient)?;1780 }17811782 match target_collection.mode1783 {1784 CollectionMode::NFT => Self::transfer_nft(target_collection, item_id, sender.clone(), recipient.clone())?,1785 CollectionMode::Fungible(_) => Self::transfer_fungible(target_collection, value, &sender, &recipient)?,1786 CollectionMode::ReFungible => Self::transfer_refungible(target_collection, item_id, value, sender.clone(), recipient.clone())?,1787 _ => ()1788 };17891790 Self::deposit_event(RawEvent::Transfer(target_collection.id, item_id, sender, recipient, value));17911792 Ok(())1793 }17941795 pub fn create_multiple_items_internal(1796 sender: T::AccountId,1797 collection: &CollectionHandle<T>,1798 owner: T::AccountId,1799 items_data: Vec<CreateItemData>,1800 ) -> DispatchResult {1801 Self::can_create_items_in_collection(&collection, &sender, &owner, items_data.len() as u32)?;18021803 for data in &items_data {1804 Self::validate_create_item_args(&collection, data)?;1805 }1806 for data in &items_data {1807 Self::create_item_no_validation(&collection, owner.clone(), data.clone())?;1808 }18091810 Ok(())1811 }18121813 fn is_correct_transfer(collection: &CollectionHandle<T>, recipient: &T::AccountId) -> DispatchResult {1814 let collection_id = collection.id;18151816 // check token limit and account token limit1817 let account_items: u32 = <AddressTokens<T>>::get(collection_id, recipient).len() as u32;1818 ensure!(collection.limits.account_token_ownership_limit > account_items, Error::<T>::AccountTokenLimitExceeded);1819 1820 Ok(())1821 }18221823 fn can_create_items_in_collection(collection: &CollectionHandle<T>, sender: &T::AccountId, owner: &T::AccountId, amount: u32) -> DispatchResult {1824 let collection_id = collection.id;18251826 // check token limit and account token limit1827 let total_items: u32 = ItemListIndex::get(collection_id)1828 .checked_add(amount)1829 .ok_or(Error::<T>::CollectionTokenLimitExceeded)?;1830 let account_items: u32 = (<AddressTokens<T>>::get(collection_id, owner).len() as u32)1831 .checked_add(amount)1832 .ok_or(Error::<T>::AccountTokenLimitExceeded)?;1833 ensure!(collection.limits.token_limit >= total_items, Error::<T>::CollectionTokenLimitExceeded);1834 ensure!(collection.limits.account_token_ownership_limit >= account_items, Error::<T>::AccountTokenLimitExceeded);18351836 if !Self::is_owner_or_admin_permissions(collection, sender.clone()) {1837 ensure!(collection.mint_mode == true, Error::<T>::PublicMintingNotAllowed);1838 Self::check_white_list(collection, owner)?;1839 Self::check_white_list(collection, sender)?;1840 }18411842 Ok(())1843 }18441845 fn validate_create_item_args(target_collection: &CollectionHandle<T>, data: &CreateItemData) -> DispatchResult {1846 match target_collection.mode1847 {1848 CollectionMode::NFT => {1849 if let CreateItemData::NFT(data) = data {1850 // check sizes1851 ensure!(ChainLimit::get().custom_data_limit >= data.const_data.len() as u32, Error::<T>::TokenConstDataLimitExceeded);1852 ensure!(ChainLimit::get().custom_data_limit >= data.variable_data.len() as u32, Error::<T>::TokenVariableDataLimitExceeded);1853 } else {1854 fail!(Error::<T>::NotNftDataUsedToMintNftCollectionToken);1855 }1856 },1857 CollectionMode::Fungible(_) => {1858 if let CreateItemData::Fungible(_) = data {1859 } else {1860 fail!(Error::<T>::NotFungibleDataUsedToMintFungibleCollectionToken);1861 }1862 },1863 CollectionMode::ReFungible => {1864 if let CreateItemData::ReFungible(data) = data {18651866 // check sizes1867 ensure!(ChainLimit::get().custom_data_limit >= data.const_data.len() as u32, Error::<T>::TokenConstDataLimitExceeded);1868 ensure!(ChainLimit::get().custom_data_limit >= data.variable_data.len() as u32, Error::<T>::TokenVariableDataLimitExceeded);18691870 // Check refungibility limits1871 ensure!(data.pieces <= MAX_REFUNGIBLE_PIECES, Error::<T>::WrongRefungiblePieces);1872 ensure!(data.pieces > 0, Error::<T>::WrongRefungiblePieces);1873 } else {1874 fail!(Error::<T>::NotReFungibleDataUsedToMintReFungibleCollectionToken);1875 }1876 },1877 _ => { fail!(Error::<T>::UnexpectedCollectionType); }1878 };18791880 Ok(())1881 }18821883 fn create_item_no_validation(collection: &CollectionHandle<T>, owner: T::AccountId, data: CreateItemData) -> DispatchResult {1884 match data1885 {1886 CreateItemData::NFT(data) => {1887 let item = NftItemType {1888 owner: owner.clone(),1889 const_data: data.const_data,1890 variable_data: data.variable_data1891 };18921893 Self::add_nft_item(collection, item)?;1894 },1895 CreateItemData::Fungible(data) => {1896 Self::add_fungible_item(collection, &owner, data.value)?;1897 },1898 CreateItemData::ReFungible(data) => {1899 let mut owner_list = Vec::new();1900 owner_list.push(Ownership {owner: owner.clone(), fraction: data.pieces});19011902 let item = ReFungibleItemType {1903 owner: owner_list,1904 const_data: data.const_data,1905 variable_data: data.variable_data1906 };19071908 Self::add_refungible_item(collection, item)?;1909 }1910 };19111912 Ok(())1913 }19141915 fn add_fungible_item(collection: &CollectionHandle<T>, owner: &T::AccountId, value: u128) -> DispatchResult {1916 let collection_id = collection.id;19171918 // Does new owner already have an account?1919 let balance: u128 = <FungibleItemList<T>>::get(collection_id, owner).value;19201921 // Mint 1922 let item = FungibleItemType {1923 value: balance.checked_add(value).ok_or(Error::<T>::NumOverflow)?,1924 };1925 <FungibleItemList<T>>::insert(collection_id, (*owner).clone(), item);19261927 // Update balance1928 let new_balance = <Balance<T>>::get(collection_id, owner)1929 .checked_add(value)1930 .ok_or(Error::<T>::NumOverflow)?;1931 <Balance<T>>::insert(collection_id, (*owner).clone(), new_balance);19321933 Self::deposit_event(RawEvent::ItemCreated(collection_id, 0, owner.clone()));1934 Ok(())1935 }19361937 fn add_refungible_item(collection: &CollectionHandle<T>, item: ReFungibleItemType<T::AccountId>) -> DispatchResult {1938 let collection_id = collection.id;19391940 let current_index = <ItemListIndex>::get(collection_id)1941 .checked_add(1)1942 .ok_or(Error::<T>::NumOverflow)?;1943 let itemcopy = item.clone();19441945 ensure!(1946 item.owner.len() == 1,1947 Error::<T>::BadCreateRefungibleCall,1948 );1949 let item_owner = item.owner.first().expect("only one owner is defined");19501951 let value = item_owner.fraction;1952 let owner = item_owner.owner.clone();19531954 Self::add_token_index(collection_id, current_index, &owner)?;19551956 <ItemListIndex>::insert(collection_id, current_index);1957 <ReFungibleItemList<T>>::insert(collection_id, current_index, itemcopy);19581959 // Update balance1960 let new_balance = <Balance<T>>::get(collection_id, &owner)1961 .checked_add(value)1962 .ok_or(Error::<T>::NumOverflow)?;1963 <Balance<T>>::insert(collection_id, owner.clone(), new_balance);19641965 Self::deposit_event(RawEvent::ItemCreated(collection_id, current_index, owner));1966 Ok(())1967 }19681969 fn add_nft_item(collection: &CollectionHandle<T>, item: NftItemType<T::AccountId>) -> DispatchResult {1970 let collection_id = collection.id;19711972 let current_index = <ItemListIndex>::get(collection_id)1973 .checked_add(1)1974 .ok_or(Error::<T>::NumOverflow)?;19751976 let item_owner = item.owner.clone();1977 Self::add_token_index(collection_id, current_index, &item.owner)?;19781979 <ItemListIndex>::insert(collection_id, current_index);1980 <NftItemList<T>>::insert(collection_id, current_index, item);19811982 // Update balance1983 let new_balance = <Balance<T>>::get(collection_id, item_owner.clone())1984 .checked_add(1)1985 .ok_or(Error::<T>::NumOverflow)?;1986 <Balance<T>>::insert(collection_id, item_owner.clone(), new_balance);19871988 Self::deposit_event(RawEvent::ItemCreated(collection_id, current_index, item_owner));1989 Ok(())1990 }19911992 fn burn_refungible_item(1993 collection: &CollectionHandle<T>,1994 item_id: TokenId,1995 owner: &T::AccountId,1996 ) -> DispatchResult {1997 let collection_id = collection.id;19981999 let mut token = <ReFungibleItemList<T>>::get(collection_id, item_id)2000 .ok_or(Error::<T>::TokenNotFound)?;2001 let rft_balance = token2002 .owner2003 .iter()2004 .find(|&i| i.owner == *owner)2005 .ok_or(Error::<T>::TokenNotFound)?;2006 Self::remove_token_index(collection_id, item_id, owner)?;20072008 // update balance2009 let new_balance = <Balance<T>>::get(collection_id, rft_balance.owner.clone())2010 .checked_sub(rft_balance.fraction)2011 .ok_or(Error::<T>::NumOverflow)?;2012 <Balance<T>>::insert(collection_id, rft_balance.owner.clone(), new_balance);20132014 // Re-create owners list with sender removed2015 let index = token2016 .owner2017 .iter()2018 .position(|i| i.owner == *owner)2019 .expect("owned item is exists");2020 token.owner.remove(index);2021 let owner_count = token.owner.len();20222023 // Burn the token completely if this was the last (only) owner2024 if owner_count == 0 {2025 <ReFungibleItemList<T>>::remove(collection_id, item_id);2026 <VariableMetaDataBasket<T>>::remove(collection_id, item_id);2027 }2028 else {2029 <ReFungibleItemList<T>>::insert(collection_id, item_id, token);2030 }20312032 Ok(())2033 }20342035 fn burn_nft_item(collection: &CollectionHandle<T>, item_id: TokenId) -> DispatchResult {2036 let collection_id = collection.id;20372038 let item = <NftItemList<T>>::get(collection_id, item_id)2039 .ok_or(Error::<T>::TokenNotFound)?;2040 Self::remove_token_index(collection_id, item_id, &item.owner)?;20412042 // update balance2043 let new_balance = <Balance<T>>::get(collection_id, &item.owner)2044 .checked_sub(1)2045 .ok_or(Error::<T>::NumOverflow)?;2046 <Balance<T>>::insert(collection_id, item.owner.clone(), new_balance);2047 <NftItemList<T>>::remove(collection_id, item_id);2048 <VariableMetaDataBasket<T>>::remove(collection_id, item_id);20492050 Ok(())2051 }20522053 fn burn_fungible_item(owner: &T::AccountId, collection: &CollectionHandle<T>, value: u128) -> DispatchResult {2054 let collection_id = collection.id;20552056 let mut balance = <FungibleItemList<T>>::get(collection_id, owner);2057 ensure!(balance.value >= value, Error::<T>::TokenValueNotEnough);20582059 // update balance2060 let new_balance = <Balance<T>>::get(collection_id, owner)2061 .checked_sub(value)2062 .ok_or(Error::<T>::NumOverflow)?;2063 <Balance<T>>::insert(collection_id, (*owner).clone(), new_balance);20642065 if balance.value - value > 0 {2066 balance.value -= value;2067 <FungibleItemList<T>>::insert(collection_id, (*owner).clone(), balance);2068 }2069 else {2070 <FungibleItemList<T>>::remove(collection_id, owner);2071 }20722073 Ok(())2074 }20752076 pub fn get_collection(collection_id: CollectionId) -> Result<CollectionHandle<T>, sp_runtime::DispatchError> {2077 Ok(<CollectionById<T>>::get(collection_id)2078 .map(|collection| CollectionHandle {2079 id: collection_id,2080 collection2081 })2082 .ok_or(Error::<T>::CollectionNotFound)?)2083 }20842085 fn save_collection(collection: CollectionHandle<T>) {2086 <CollectionById<T>>::insert(collection.id, collection.collection);2087 }20882089 fn check_owner_permissions(target_collection: &CollectionHandle<T>, subject: T::AccountId) -> DispatchResult {2090 ensure!(2091 subject == target_collection.owner,2092 Error::<T>::NoPermission2093 );20942095 Ok(())2096 }20972098 fn is_owner_or_admin_permissions(collection: &CollectionHandle<T>, subject: T::AccountId) -> bool {2099 subject == collection.owner || <AdminList<T>>::get(collection.id).contains(&subject)2100 }21012102 fn check_owner_or_admin_permissions(2103 collection: &CollectionHandle<T>,2104 subject: T::AccountId,2105 ) -> DispatchResult {2106 ensure!(Self::is_owner_or_admin_permissions(collection, subject), Error::<T>::NoPermission);21072108 Ok(())2109 }21102111 fn owned_amount(2112 subject: T::AccountId,2113 target_collection: &CollectionHandle<T>,2114 item_id: TokenId,2115 ) -> Option<u128> {2116 let collection_id = target_collection.id;21172118 match target_collection.mode {2119 CollectionMode::NFT => (<NftItemList<T>>::get(collection_id, item_id)?.owner == subject)2120 .then(|| 1),2121 CollectionMode::Fungible(_) => Some(<FungibleItemList<T>>::get(collection_id, &subject)2122 .value),2123 CollectionMode::ReFungible => <ReFungibleItemList<T>>::get(collection_id, item_id)?2124 .owner2125 .iter()2126 .find(|i| i.owner == subject)2127 .map(|i| i.fraction),2128 CollectionMode::Invalid => None,2129 }2130 }21312132 fn is_item_owner(subject: T::AccountId, target_collection: &CollectionHandle<T>, item_id: TokenId) -> bool {2133 match target_collection.mode {2134 CollectionMode::Fungible(_) => true,2135 _ => Self::owned_amount(subject, target_collection, item_id).is_some(),2136 }2137 }21382139 fn check_white_list(collection: &CollectionHandle<T>, address: &T::AccountId) -> DispatchResult {2140 let collection_id = collection.id;21412142 let mes = Error::<T>::AddresNotInWhiteList;2143 ensure!(<WhiteList<T>>::contains_key(collection_id, address), mes);21442145 Ok(())2146 }21472148 /// Check if token exists. In case of Fungible, check if there is an entry for 2149 /// the owner in fungible balances double map2150 fn token_exists(2151 target_collection: &CollectionHandle<T>,2152 item_id: TokenId,2153 ) -> DispatchResult {2154 let collection_id = target_collection.id;2155 let exists = match target_collection.mode2156 {2157 CollectionMode::NFT => <NftItemList<T>>::contains_key(collection_id, item_id),2158 CollectionMode::Fungible(_) => true,2159 CollectionMode::ReFungible => <ReFungibleItemList<T>>::contains_key(collection_id, item_id),2160 _ => false2161 };21622163 ensure!(exists == true, Error::<T>::TokenNotFound);2164 Ok(())2165 }21662167 fn transfer_fungible(2168 collection: &CollectionHandle<T>,2169 value: u128,2170 owner: &T::AccountId,2171 recipient: &T::AccountId,2172 ) -> DispatchResult {2173 let collection_id = collection.id;21742175 let mut balance = <FungibleItemList<T>>::get(collection_id, owner);2176 ensure!(balance.value >= value, Error::<T>::TokenValueTooLow);21772178 // Send balance to recipient (updates balanceOf of recipient)2179 Self::add_fungible_item(collection, recipient, value)?;21802181 // update balanceOf of sender2182 <Balance<T>>::insert(collection_id, (*owner).clone(), balance.value - value);21832184 // Reduce or remove sender2185 if balance.value == value {2186 <FungibleItemList<T>>::remove(collection_id, owner);2187 }2188 else {2189 balance.value -= value;2190 <FungibleItemList<T>>::insert(collection_id, (*owner).clone(), balance);2191 }21922193 Ok(())2194 }21952196 fn transfer_refungible(2197 collection: &CollectionHandle<T>,2198 item_id: TokenId,2199 value: u128,2200 owner: T::AccountId,2201 new_owner: T::AccountId,2202 ) -> DispatchResult {2203 let collection_id = collection.id;2204 let full_item = <ReFungibleItemList<T>>::get(collection_id, item_id)2205 .ok_or(Error::<T>::TokenNotFound)?;22062207 let item = full_item2208 .owner2209 .iter()2210 .filter(|i| i.owner == owner)2211 .next()2212 .ok_or(Error::<T>::TokenNotFound)?;2213 let amount = item.fraction;22142215 ensure!(amount >= value, Error::<T>::TokenValueTooLow);22162217 // update balance2218 let balance_old_owner = <Balance<T>>::get(collection_id, item.owner.clone())2219 .checked_sub(value)2220 .ok_or(Error::<T>::NumOverflow)?;2221 <Balance<T>>::insert(collection_id, item.owner.clone(), balance_old_owner);22222223 let balance_new_owner = <Balance<T>>::get(collection_id, new_owner.clone())2224 .checked_add(value)2225 .ok_or(Error::<T>::NumOverflow)?;2226 <Balance<T>>::insert(collection_id, new_owner.clone(), balance_new_owner);22272228 let old_owner = item.owner.clone();2229 let new_owner_has_account = full_item.owner.iter().any(|i| i.owner == new_owner);22302231 // transfer2232 if amount == value && !new_owner_has_account {2233 // change owner2234 // new owner do not have account2235 let mut new_full_item = full_item.clone();2236 new_full_item2237 .owner2238 .iter_mut()2239 .find(|i| i.owner == owner)2240 .expect("old owner does present in refungible")2241 .owner = new_owner.clone();2242 <ReFungibleItemList<T>>::insert(collection_id, item_id, new_full_item);22432244 // update index collection2245 Self::move_token_index(collection_id, item_id, &old_owner, &new_owner)?;2246 } else {2247 let mut new_full_item = full_item.clone();2248 new_full_item2249 .owner2250 .iter_mut()2251 .find(|i| i.owner == owner)2252 .expect("old owner does present in refungible")2253 .fraction -= value;22542255 // separate amount2256 if new_owner_has_account {2257 // new owner has account2258 new_full_item2259 .owner2260 .iter_mut()2261 .find(|i| i.owner == new_owner)2262 .expect("new owner has account")2263 .fraction += value;2264 } else {2265 // new owner do not have account2266 new_full_item.owner.push(Ownership {2267 owner: new_owner.clone(),2268 fraction: value,2269 });2270 Self::add_token_index(collection_id, item_id, &new_owner)?;2271 }22722273 <ReFungibleItemList<T>>::insert(collection_id, item_id, new_full_item);2274 }22752276 Ok(())2277 }22782279 fn transfer_nft(2280 collection: &CollectionHandle<T>,2281 item_id: TokenId,2282 sender: T::AccountId,2283 new_owner: T::AccountId,2284 ) -> DispatchResult {2285 let collection_id = collection.id;2286 let mut item = <NftItemList<T>>::get(collection_id, item_id)2287 .ok_or(Error::<T>::TokenNotFound)?;22882289 ensure!(2290 sender == item.owner,2291 Error::<T>::MustBeTokenOwner2292 );22932294 // update balance2295 let balance_old_owner = <Balance<T>>::get(collection_id, item.owner.clone())2296 .checked_sub(1)2297 .ok_or(Error::<T>::NumOverflow)?;2298 <Balance<T>>::insert(collection_id, item.owner.clone(), balance_old_owner);22992300 let balancenew_owner = <Balance<T>>::get(collection_id, new_owner.clone())2301 .checked_add(1)2302 .ok_or(Error::<T>::NumOverflow)?;2303 <Balance<T>>::insert(collection_id, new_owner.clone(), balancenew_owner);23042305 // change owner2306 let old_owner = item.owner.clone();2307 item.owner = new_owner.clone();2308 <NftItemList<T>>::insert(collection_id, item_id, item);23092310 // update index collection2311 Self::move_token_index(collection_id, item_id, &old_owner, &new_owner)?;23122313 Ok(())2314 }2315 2316 fn set_re_fungible_variable_data(2317 collection: &CollectionHandle<T>,2318 item_id: TokenId,2319 data: Vec<u8>2320 ) -> DispatchResult {2321 let collection_id = collection.id;2322 let mut item = <ReFungibleItemList<T>>::get(collection_id, item_id)2323 .ok_or(Error::<T>::TokenNotFound)?;23242325 item.variable_data = data;23262327 <ReFungibleItemList<T>>::insert(collection_id, item_id, item);23282329 Ok(())2330 }23312332 fn set_nft_variable_data(2333 collection: &CollectionHandle<T>,2334 item_id: TokenId,2335 data: Vec<u8>2336 ) -> DispatchResult {2337 let collection_id = collection.id;2338 let mut item = <NftItemList<T>>::get(collection_id, item_id)2339 .ok_or(Error::<T>::TokenNotFound)?;2340 2341 item.variable_data = data;23422343 <NftItemList<T>>::insert(collection_id, item_id, item);2344 2345 Ok(())2346 }23472348 fn init_collection(item: &Collection<T>) {2349 // check params2350 assert!(2351 item.decimal_points <= MAX_DECIMAL_POINTS,2352 "decimal_points parameter must be lower than MAX_DECIMAL_POINTS"2353 );2354 assert!(2355 item.name.len() <= 64,2356 "Collection name can not be longer than 63 char"2357 );2358 assert!(2359 item.name.len() <= 256,2360 "Collection description can not be longer than 255 char"2361 );2362 assert!(2363 item.token_prefix.len() <= 16,2364 "Token prefix can not be longer than 15 char"2365 );23662367 // Generate next collection ID2368 let next_id = CreatedCollectionCount::get()2369 .checked_add(1)2370 .unwrap();23712372 CreatedCollectionCount::put(next_id);2373 }23742375 fn init_nft_token(collection_id: CollectionId, item: &NftItemType<T::AccountId>) {2376 let current_index = <ItemListIndex>::get(collection_id)2377 .checked_add(1)2378 .unwrap();23792380 let item_owner = item.owner.clone();2381 Self::add_token_index(collection_id, current_index, &item.owner).unwrap();23822383 <ItemListIndex>::insert(collection_id, current_index);23842385 // Update balance2386 let new_balance = <Balance<T>>::get(collection_id, &item_owner)2387 .checked_add(1)2388 .unwrap();2389 <Balance<T>>::insert(collection_id, item_owner.clone(), new_balance);2390 }23912392 fn init_fungible_token(collection_id: CollectionId, owner: &T::AccountId, item: &FungibleItemType) {2393 let current_index = <ItemListIndex>::get(collection_id)2394 .checked_add(1)2395 .unwrap();23962397 Self::add_token_index(collection_id, current_index, owner).unwrap();23982399 <ItemListIndex>::insert(collection_id, current_index);24002401 // Update balance2402 let new_balance = <Balance<T>>::get(collection_id, owner)2403 .checked_add(item.value)2404 .unwrap();2405 <Balance<T>>::insert(collection_id, (*owner).clone(), new_balance);2406 }24072408 fn init_refungible_token(collection_id: CollectionId, item: &ReFungibleItemType<T::AccountId>) {2409 let current_index = <ItemListIndex>::get(collection_id)2410 .checked_add(1)2411 .unwrap();24122413 let value = item.owner.first().unwrap().fraction;2414 let owner = item.owner.first().unwrap().owner.clone();24152416 Self::add_token_index(collection_id, current_index, &owner).unwrap();24172418 <ItemListIndex>::insert(collection_id, current_index);24192420 // Update balance2421 let new_balance = <Balance<T>>::get(collection_id, &owner)2422 .checked_add(value)2423 .unwrap();2424 <Balance<T>>::insert(collection_id, owner.clone(), new_balance);2425 }24262427 fn add_token_index(collection_id: CollectionId, item_index: TokenId, owner: &T::AccountId) -> DispatchResult {2428 // add to account limit2429 if <AccountItemCount<T>>::contains_key(owner) {24302431 // bound Owned tokens by a single address2432 let count = <AccountItemCount<T>>::get(owner);2433 ensure!(count < ChainLimit::get().account_token_ownership_limit, Error::<T>::AddressOwnershipLimitExceeded);24342435 <AccountItemCount<T>>::insert(owner.clone(), count2436 .checked_add(1)2437 .ok_or(Error::<T>::NumOverflow)?);2438 }2439 else {2440 <AccountItemCount<T>>::insert(owner.clone(), 1);2441 }24422443 let list_exists = <AddressTokens<T>>::contains_key(collection_id, owner);2444 if list_exists {2445 let mut list = <AddressTokens<T>>::get(collection_id, owner);2446 let item_contains = list.contains(&item_index.clone());24472448 if !item_contains {2449 list.push(item_index.clone());2450 }24512452 <AddressTokens<T>>::insert(collection_id, owner.clone(), list);2453 } else {2454 let mut itm = Vec::new();2455 itm.push(item_index.clone());2456 <AddressTokens<T>>::insert(collection_id, owner.clone(), itm);2457 }24582459 Ok(())2460 }24612462 fn remove_token_index(2463 collection_id: CollectionId,2464 item_index: TokenId,2465 owner: &T::AccountId,2466 ) -> DispatchResult {24672468 // update counter2469 <AccountItemCount<T>>::insert(owner.clone(), 2470 <AccountItemCount<T>>::get(owner)2471 .checked_sub(1)2472 .ok_or(Error::<T>::NumOverflow)?);247324742475 let list_exists = <AddressTokens<T>>::contains_key(collection_id, owner);2476 if list_exists {2477 let mut list = <AddressTokens<T>>::get(collection_id, owner);2478 let item_contains = list.contains(&item_index.clone());24792480 if item_contains {2481 list.retain(|&item| item != item_index);2482 <AddressTokens<T>>::insert(collection_id, owner.clone(), list);2483 }2484 }24852486 Ok(())2487 }24882489 fn move_token_index(2490 collection_id: CollectionId,2491 item_index: TokenId,2492 old_owner: &T::AccountId,2493 new_owner: &T::AccountId,2494 ) -> DispatchResult {2495 Self::remove_token_index(collection_id, item_index, old_owner)?;2496 Self::add_token_index(collection_id, item_index, new_owner)?;24972498 Ok(())2499 }2500 2501 fn ensure_contract_owned(account: T::AccountId, contract: &T::AccountId) -> DispatchResult {2502 ensure!(<ContractOwner<T>>::get(contract) == Some(account), Error::<T>::NoPermission);25032504 Ok(())2505 }2506}25072508////////////////////////////////////////////////////////////////////////////////////////////////////2509// Economic models2510// #region25112512/// Fee multiplier.2513pub type Multiplier = FixedU128;25142515type BalanceOf<T> = <<T as pallet_transaction_payment::Config>::OnChargeTransaction as pallet_transaction_payment::OnChargeTransaction<T>>::Balance;25162517/// Require the transactor pay for themselves and maybe include a tip to gain additional priority2518/// in the queue.2519#[derive(Encode, Decode, Clone, Eq, PartialEq)]2520pub struct ChargeTransactionPayment<T: Config>(#[codec(compact)] BalanceOf<T>);25212522impl<T: Config + Send + Sync> sp_std::fmt::Debug 2523 for ChargeTransactionPayment<T>2524{2525 #[cfg(feature = "std")]2526 fn fmt(&self, f: &mut sp_std::fmt::Formatter) -> sp_std::fmt::Result {2527 write!(f, "ChargeTransactionPayment<{:?}>", self.0)2528 }2529 #[cfg(not(feature = "std"))]2530 fn fmt(&self, _: &mut sp_std::fmt::Formatter) -> sp_std::fmt::Result {2531 Ok(())2532 }2533}25342535impl<T: Config> ChargeTransactionPayment<T>2536where2537 T::Call: Dispatchable<Info=DispatchInfo, PostInfo=PostDispatchInfo> + IsSubType<Call<T>> + IsSubType<pallet_contracts::Call<T>>,2538 BalanceOf<T>: Send + Sync + From<u64> + FixedPointOperand,2539 T::AccountId: AsRef<[u8]>,2540 T::AccountId: UncheckedFrom<T::Hash>,2541{2542 fn traditional_fee(2543 len: usize,2544 info: &DispatchInfoOf<T::Call>,2545 tip: BalanceOf<T>,2546 ) -> BalanceOf<T>2547 where2548 T::Call: Dispatchable<Info = DispatchInfo>,2549 {2550 <pallet_transaction_payment::Module<T>>::compute_fee(len as u32, info, tip)2551 }25522553 fn get_priority(len: usize, info: &DispatchInfoOf<T::Call>, final_fee: BalanceOf<T>) -> TransactionPriority {2554 let weight_saturation = T::BlockWeights::get().max_block / info.weight.max(1);2555 let max_block_length = *T::BlockLength::get().max.get(DispatchClass::Normal);2556 let len_saturation = max_block_length as u64 / (len as u64).max(1);2557 let coefficient: BalanceOf<T> = weight_saturation2558 .min(len_saturation)2559 .saturated_into::<BalanceOf<T>>();2560 final_fee2561 .saturating_mul(coefficient)2562 .saturated_into::<TransactionPriority>()2563 }25642565 fn withdraw_fee(2566 &self,2567 who: &T::AccountId,2568 call: &T::Call,2569 info: &DispatchInfoOf<T::Call>,2570 len: usize,2571 ) -> Result<2572 (2573 BalanceOf<T>,2574 <<T as pallet_transaction_payment::Config>::OnChargeTransaction as pallet_transaction_payment::OnChargeTransaction<T>>::LiquidityInfo,2575 ),2576 TransactionValidityError,2577 > {2578 let tip = self.0;25792580 let fee = Self::traditional_fee(len, info, tip);25812582 // Only mess with balances if fee is not zero.2583 if fee.is_zero() {2584 return <<T as pallet_transaction_payment::Config>::OnChargeTransaction as pallet_transaction_payment::OnChargeTransaction<T>>::withdraw_fee(who, call, info, fee, tip)2585 .map(|i| (fee, i));2586 }25872588 // Determine who is paying transaction fee based on ecnomic model2589 // Parse call to extract collection ID and access collection sponsor2590 let mut sponsor: Option<T::AccountId> = (|| match IsSubType::<Call<T>>::is_sub_type(call) {2591 Some(Call::create_item(collection_id, _owner, _properties)) => {2592 let collection = <CollectionById<T>>::get(collection_id)?;25932594 // sponsor timeout2595 let block_number = <system::Module<T>>::block_number() as T::BlockNumber;25962597 let limit = collection.limits.sponsor_transfer_timeout;2598 if <CreateItemBasket<T>>::contains_key((collection_id, &who)) {2599 let last_tx_block = <CreateItemBasket<T>>::get((collection_id, &who));2600 let limit_time = last_tx_block + limit.into();2601 if block_number <= limit_time {2602 return None;2603 }2604 }2605 <CreateItemBasket<T>>::insert((collection_id, who.clone()), block_number);26062607 // check free create limit2608 if collection.limits.sponsored_data_size >= (_properties.len() as u32) {2609 collection.sponsorship.sponsor()2610 .cloned()2611 } else {2612 None2613 }2614 }2615 Some(Call::transfer(_new_owner, collection_id, item_id, _value)) => {2616 let collection = <CollectionById<T>>::get(collection_id)?;2617 2618 let mut sponsor_transfer = false;2619 if collection.sponsorship.confirmed() {26202621 let collection_limits = collection.limits;2622 let collection_mode = collection.mode;2623 2624 // sponsor timeout2625 let block_number = <system::Module<T>>::block_number() as T::BlockNumber;2626 sponsor_transfer = match collection_mode {2627 CollectionMode::NFT => {2628 2629 // get correct limit2630 let limit: u32 = if collection_limits.sponsor_transfer_timeout > 0 {2631 collection_limits.sponsor_transfer_timeout2632 } else {2633 ChainLimit::get().nft_sponsor_transfer_timeout2634 };2635 2636 let mut sponsored = true;2637 if <NftTransferBasket<T>>::contains_key(collection_id, item_id) {2638 let last_tx_block = <NftTransferBasket<T>>::get(collection_id, item_id);2639 let limit_time = last_tx_block + limit.into();2640 if block_number <= limit_time {2641 sponsored = false;2642 }2643 }2644 if sponsored {2645 <NftTransferBasket<T>>::insert(collection_id, item_id, block_number);2646 }26472648 sponsored2649 }2650 CollectionMode::Fungible(_) => {2651 2652 // get correct limit2653 let limit: u32 = if collection_limits.sponsor_transfer_timeout > 0 {2654 collection_limits.sponsor_transfer_timeout2655 } else {2656 ChainLimit::get().fungible_sponsor_transfer_timeout2657 };2658 2659 let block_number = <system::Module<T>>::block_number() as T::BlockNumber;2660 let mut sponsored = true;2661 if <FungibleTransferBasket<T>>::contains_key(collection_id, who) {2662 let last_tx_block = <FungibleTransferBasket<T>>::get(collection_id, who);2663 let limit_time = last_tx_block + limit.into();2664 if block_number <= limit_time {2665 sponsored = false;2666 }2667 }2668 if sponsored {2669 <FungibleTransferBasket<T>>::insert(collection_id, who, block_number);2670 }26712672 sponsored2673 }2674 CollectionMode::ReFungible => {2675 2676 // get correct limit2677 let limit: u32 = if collection_limits.sponsor_transfer_timeout > 0 {2678 collection_limits.sponsor_transfer_timeout2679 } else {2680 ChainLimit::get().refungible_sponsor_transfer_timeout2681 };2682 2683 let mut sponsored = true;2684 if <ReFungibleTransferBasket<T>>::contains_key(collection_id, item_id) {2685 let last_tx_block = <ReFungibleTransferBasket<T>>::get(collection_id, item_id);2686 let limit_time = last_tx_block + limit.into();2687 if block_number <= limit_time {2688 sponsored = false;2689 }2690 }2691 if sponsored {2692 <ReFungibleTransferBasket<T>>::insert(collection_id, item_id, block_number);2693 }26942695 sponsored2696 }2697 _ => {2698 false2699 },2700 };2701 }27022703 if !sponsor_transfer {2704 None2705 } else {2706 collection.sponsorship.sponsor()2707 .cloned()2708 }2709 }27102711 Some(Call::set_variable_meta_data(collection_id, item_id, data)) => {2712 let mut sponsor_metadata_changes = false;27132714 let collection = <CollectionById<T>>::get(collection_id)?;27152716 if2717 collection.sponsorship.confirmed() &&2718 // Can't sponsor fungible collection, this tx will be rejected2719 // as invalid2720 !matches!(collection.mode, CollectionMode::Fungible(_)) &&2721 data.len() <= collection.limits.sponsored_data_size as usize2722 {2723 if let Some(rate_limit) = collection.limits.sponsored_data_rate_limit {2724 let block_number = <system::Module<T>>::block_number() as T::BlockNumber;27252726 if <VariableMetaDataBasket<T>>::get(collection_id, item_id)2727 .map(|last_block| block_number - last_block > rate_limit)2728 .unwrap_or(true) 2729 {2730 sponsor_metadata_changes = true;2731 <VariableMetaDataBasket<T>>::insert(collection_id, item_id, block_number);2732 }2733 }2734 }27352736 if !sponsor_metadata_changes {2737 None2738 } else {2739 collection.sponsorship.sponsor().cloned()2740 }2741 }27422743 _ => None,2744 })();27452746 match IsSubType::<pallet_contracts::Call<T>>::is_sub_type(call) {2747 Some(pallet_contracts::Call::call(dest, _value, _gas_limit, _data)) => {27482749 let called_contract: T::AccountId = T::Lookup::lookup((*dest).clone()).unwrap_or(T::AccountId::default());27502751 let owned_contract = <ContractOwner<T>>::get(called_contract.clone()).as_ref() == Some(who);2752 let white_list_enabled = <ContractWhiteListEnabled<T>>::contains_key(called_contract.clone());2753 2754 if !owned_contract && white_list_enabled {2755 if !<ContractWhiteList<T>>::contains_key(called_contract.clone(), who) {2756 return Err(InvalidTransaction::Call.into());2757 }2758 }2759 },2760 _ => {},2761 }27622763 // Sponsor smart contracts2764 sponsor = sponsor.or_else(|| match IsSubType::<pallet_contracts::Call<T>>::is_sub_type(call) {27652766 // On instantiation: set the contract owner2767 Some(pallet_contracts::Call::instantiate(_endowment, _gas_limit, code_hash, _data, salt)) => {27682769 let new_contract_address = <pallet_contracts::Module<T>>::contract_address(2770 &who,2771 code_hash,2772 salt,2773 );2774 <ContractOwner<T>>::insert(new_contract_address.clone(), who.clone());27752776 None2777 },27782779 // On instantiation with code: set the contract owner2780 Some(pallet_contracts::Call::instantiate_with_code(_endowment, _gas_limit, _code, _data, _salt)) => {27812782 let new_contract_address = <pallet_contracts::Module<T>>::contract_address(2783 &who,2784 &T::Hashing::hash(&_code),2785 _salt,2786 );27872788 <ContractOwner<T>>::insert(new_contract_address.clone(), who.clone());27892790 None2791 }27922793 // When the contract is called, check if the sponsoring is enabled and pay fees from contract endowment if it is2794 Some(pallet_contracts::Call::call(dest, _value, _gas_limit, _data)) => {27952796 let called_contract: T::AccountId = T::Lookup::lookup((*dest).clone()).unwrap_or(T::AccountId::default());27972798 let mut sponsor_transfer = false;2799 if <ContractSponsoringRateLimit<T>>::contains_key(called_contract.clone()) {2800 let last_tx_block = <ContractSponsorBasket<T>>::get((&called_contract, &who));2801 let block_number = <system::Module<T>>::block_number() as T::BlockNumber;2802 let rate_limit = <ContractSponsoringRateLimit<T>>::get(&called_contract);2803 let limit_time = last_tx_block + rate_limit;28042805 if block_number >= limit_time {2806 <ContractSponsorBasket<T>>::insert((called_contract.clone(), who.clone()), block_number);2807 sponsor_transfer = true;2808 }2809 } else {2810 sponsor_transfer = false;2811 }2812 2813 if sponsor_transfer {2814 if <ContractSelfSponsoring<T>>::contains_key(called_contract.clone()) {2815 if <ContractSelfSponsoring<T>>::get(called_contract.clone()) {2816 return Some(called_contract);2817 }2818 }2819 }28202821 None2822 },28232824 _ => None,2825 });28262827 let who_pays_fee = sponsor.unwrap_or_else(|| who.clone());28282829 <<T as pallet_transaction_payment::Config>::OnChargeTransaction as pallet_transaction_payment::OnChargeTransaction<T>>::withdraw_fee(&who_pays_fee, call, info, fee, tip)2830 .map(|i| (fee, i))2831 }2832}283328342835impl<T: Config + Send + Sync> SignedExtension2836 for ChargeTransactionPayment<T>2837where2838 BalanceOf<T>: Send + Sync + From<u64> + FixedPointOperand,2839 T::Call: Dispatchable<Info = DispatchInfo, PostInfo = PostDispatchInfo> + IsSubType<Call<T>> + IsSubType<pallet_contracts::Call<T>>,2840 T::AccountId: AsRef<[u8]>,2841 T::AccountId: UncheckedFrom<T::Hash>,2842{2843 const IDENTIFIER: &'static str = "ChargeTransactionPayment";2844 type AccountId = T::AccountId;2845 type Call = T::Call;2846 type AdditionalSigned = ();2847 type Pre = (2848 // tip2849 BalanceOf<T>,2850 // who pays fee2851 Self::AccountId,2852 // imbalance resulting from withdrawing the fee2853 <<T as pallet_transaction_payment::Config>::OnChargeTransaction as pallet_transaction_payment::OnChargeTransaction<T>>::LiquidityInfo,2854 );2855 fn additional_signed(&self) -> sp_std::result::Result<(), TransactionValidityError> {2856 Ok(())2857 }28582859 fn validate(2860 &self,2861 who: &Self::AccountId,2862 call: &Self::Call,2863 info: &DispatchInfoOf<Self::Call>,2864 len: usize,2865 ) -> TransactionValidity {2866 let (fee, _) = self.withdraw_fee(who, call, info, len)?;2867 Ok(ValidTransaction {2868 priority: Self::get_priority(len, info, fee),2869 ..Default::default()2870 })2871 }28722873 fn pre_dispatch(2874 self,2875 who: &Self::AccountId,2876 call: &Self::Call,2877 info: &DispatchInfoOf<Self::Call>,2878 len: usize,2879 ) -> Result<Self::Pre, TransactionValidityError> {2880 let (_fee, imbalance) = self.withdraw_fee(who, call, info, len)?;2881 Ok((self.0, who.clone(), imbalance))2882 }28832884 fn post_dispatch(2885 pre: Self::Pre,2886 info: &DispatchInfoOf<Self::Call>,2887 post_info: &PostDispatchInfoOf<Self::Call>,2888 len: usize,2889 _result: &DispatchResult,2890 ) -> Result<(), TransactionValidityError> {2891 let (tip, who, imbalance) = pre;2892 let actual_fee = pallet_transaction_payment::Module::<T>::compute_actual_fee(2893 len as u32,2894 info,2895 post_info,2896 tip,2897 );2898 <T as pallet_transaction_payment::Config>::OnChargeTransaction::correct_and_deposit_fee(&who, info, post_info, actual_fee, tip, imbalance)?;2899 Ok(())2900 }2901}29022903// #endregionruntime/src/chain_extension.rsdiffbeforeafterboth--- a/runtime/src/chain_extension.rs
+++ b/runtime/src/chain_extension.rs
@@ -17,8 +17,6 @@
extern crate pallet_nft;
pub use pallet_nft::*;
-use crate::Runtime;
-use sp_runtime::AccountId32;
use crate::Vec;
/// Create item parameters
@@ -38,6 +36,13 @@
pub amount: u128,
}
+#[derive(Debug, PartialEq, Encode, Decode)]
+pub struct NFTExtCreateMultipleItems<E: Ext> {
+ pub owner: <E::T as SysConfig>::AccountId,
+ pub collection_id: u32,
+ pub data: Vec<CreateItemData>,
+}
+
/// The chain Extension of NFT pallet
pub struct NFTExtension;
@@ -81,6 +86,23 @@
_ => Err(DispatchError::Other("CreateItem error"))
}
},
+ 2 => {
+ // Create multiple items
+ let mut env = env.buf_in_buf_out();
+ let input: NFTExtCreateMultipleItems<E> = env.read_as()?;
+
+ let collection = pallet_nft::Module::<C>::get_collection(input.collection_id)?;
+
+ match pallet_nft::Module::<C>::create_multiple_items_internal(
+ env.ext().address().clone(),
+ &collection,
+ input.owner,
+ input.data,
+ ) {
+ Ok(_) => Ok(RetVal::Converging(func_id)),
+ _ => Err(DispatchError::Other("CreateMultipleItems error"))
+ }
+ },
_ => {
panic!("Passed unknown func_id to test chain extension: {}", func_id);
}