difftreelog
Merge branch 'develop' into feature/erc-bulk-mint-metadata
in: master
1 file 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"]7#![cfg_attr(not(feature = "std"), no_std)]8#![allow(9 clippy::too_many_arguments,10 clippy::unnecessary_mut_passed,11 clippy::unused_unit12)]1314extern crate alloc;1516pub use serde::{Serialize, Deserialize};1718pub 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, transactional,32};3334use frame_system::{self as system, ensure_signed};35use sp_core::H160;36use sp_std::vec;37use sp_runtime::{DispatchError, sp_std::prelude::Vec};38use core::ops::{Deref, DerefMut};39use nft_data_structs::{40 MAX_DECIMAL_POINTS, MAX_SPONSOR_TIMEOUT, MAX_TOKEN_OWNERSHIP, MAX_REFUNGIBLE_PIECES,41 CUSTOM_DATA_LIMIT, COLLECTION_NUMBER_LIMIT, ACCOUNT_TOKEN_OWNERSHIP_LIMIT,42 VARIABLE_ON_CHAIN_SCHEMA_LIMIT, CONST_ON_CHAIN_SCHEMA_LIMIT, COLLECTION_ADMINS_LIMIT,43 OFFCHAIN_SCHEMA_LIMIT, MAX_TOKEN_PREFIX_LENGTH, MAX_COLLECTION_NAME_LENGTH,44 MAX_COLLECTION_DESCRIPTION_LENGTH, AccessMode, Collection, CreateItemData, CollectionLimits,45 CollectionId, CollectionMode, TokenId, SchemaVersion, SponsorshipState, Ownership, NftItemType,46 FungibleItemType, ReFungibleItemType,47};4849#[cfg(test)]50mod mock;5152#[cfg(test)]53mod tests;5455mod eth;56mod sponsorship;57pub use sponsorship::NftSponsorshipHandler;58pub use eth::sponsoring::NftEthSponsorshipHandler;5960pub use eth::NftErcSupport;61pub use eth::account::*;62use eth::erc::{ERC20Events, ERC721Events};6364#[cfg(feature = "runtime-benchmarks")]65mod benchmarking;66pub mod weights;67use weights::WeightInfo;6869decl_error! {70 /// Error for non-fungible-token module.71 pub enum Error for Module<T: Config> {72 /// Total collections bound exceeded.73 TotalCollectionsLimitExceeded,74 /// Decimal_points parameter must be lower than MAX_DECIMAL_POINTS constant, currently it is 30.75 CollectionDecimalPointLimitExceeded,76 /// Collection name can not be longer than 63 char.77 CollectionNameLimitExceeded,78 /// Collection description can not be longer than 255 char.79 CollectionDescriptionLimitExceeded,80 /// Token prefix can not be longer than 15 char.81 CollectionTokenPrefixLimitExceeded,82 /// This collection does not exist.83 CollectionNotFound,84 /// Item not exists.85 TokenNotFound,86 /// Admin not found87 AdminNotFound,88 /// Arithmetic calculation overflow.89 NumOverflow,90 /// Account already has admin role.91 AlreadyAdmin,92 /// You do not own this collection.93 NoPermission,94 /// This address is not set as sponsor, use setCollectionSponsor first.95 ConfirmUnsetSponsorFail,96 /// Collection is not in mint mode.97 PublicMintingNotAllowed,98 /// Sender parameter and item owner must be equal.99 MustBeTokenOwner,100 /// Item balance not enough.101 TokenValueTooLow,102 /// Size of item is too large.103 NftSizeLimitExceeded,104 /// No approve found105 ApproveNotFound,106 /// Requested value more than approved.107 TokenValueNotEnough,108 /// Only approved addresses can call this method.109 ApproveRequired,110 /// Address is not in white list.111 AddresNotInWhiteList,112 /// Number of collection admins bound exceeded.113 CollectionAdminsLimitExceeded,114 /// Owned tokens by a single address bound exceeded.115 AddressOwnershipLimitExceeded,116 /// Length of items properties must be greater than 0.117 EmptyArgument,118 /// const_data exceeded data limit.119 TokenConstDataLimitExceeded,120 /// variable_data exceeded data limit.121 TokenVariableDataLimitExceeded,122 /// Not NFT item data used to mint in NFT collection.123 NotNftDataUsedToMintNftCollectionToken,124 /// Not Fungible item data used to mint in Fungible collection.125 NotFungibleDataUsedToMintFungibleCollectionToken,126 /// Not Re Fungible item data used to mint in Re Fungible collection.127 NotReFungibleDataUsedToMintReFungibleCollectionToken,128 /// Unexpected collection type.129 UnexpectedCollectionType,130 /// Can't store metadata in fungible tokens.131 CantStoreMetadataInFungibleTokens,132 /// Collection token limit exceeded133 CollectionTokenLimitExceeded,134 /// Account token limit exceeded per collection135 AccountTokenLimitExceeded,136 /// Collection limit bounds per collection exceeded137 CollectionLimitBoundsExceeded,138 /// Tried to enable permissions which are only permitted to be disabled139 OwnerPermissionsCantBeReverted,140 /// Schema data size limit bound exceeded141 SchemaDataLimitExceeded,142 /// Maximum refungibility exceeded143 WrongRefungiblePieces,144 /// createRefungible should be called with one owner145 BadCreateRefungibleCall,146 /// Gas limit exceeded147 OutOfGas,148 /// Collection settings not allowing items transferring149 TransferNotAllowed,150 /// Can't transfer tokens to ethereum zero address151 AddressIsZero,152 }153}154155#[must_use = "Should call submit_logs or save, otherwise some data will be lost for evm side"]156pub struct CollectionHandle<T: Config> {157 pub id: CollectionId,158 collection: Collection<T>,159 recorder: pallet_evm_coder_substrate::SubstrateRecorder<T>,160}161impl<T: Config> CollectionHandle<T> {162 pub fn get_with_gas_limit(id: CollectionId, gas_limit: u64) -> Option<Self> {163 <CollectionById<T>>::get(id).map(|collection| Self {164 id,165 collection,166 recorder: pallet_evm_coder_substrate::SubstrateRecorder::new(167 eth::collection_id_to_address(id),168 gas_limit,169 ),170 })171 }172 pub fn get(id: CollectionId) -> Option<Self> {173 Self::get_with_gas_limit(id, u64::MAX)174 }175 pub fn log(&self, log: impl evm_coder::ToLog) -> DispatchResult {176 self.recorder.log_sub(log)177 }178 #[allow(dead_code)]179 fn consume_gas(&self, gas: u64) -> DispatchResult {180 self.recorder.consume_gas_sub(gas)181 }182 fn consume_sload(&self) -> DispatchResult {183 self.recorder.consume_sload_sub()184 }185 fn consume_sstore(&self) -> DispatchResult {186 self.recorder.consume_sstore_sub()187 }188 pub fn submit_logs(self) -> DispatchResult {189 self.recorder.submit_logs()190 }191 pub fn save(self) -> DispatchResult {192 self.recorder.submit_logs()?;193 <CollectionById<T>>::insert(self.id, self.collection);194 Ok(())195 }196}197impl<T: Config> Deref for CollectionHandle<T> {198 type Target = Collection<T>;199200 fn deref(&self) -> &Self::Target {201 &self.collection202 }203}204205impl<T: Config> DerefMut for CollectionHandle<T> {206 fn deref_mut(&mut self) -> &mut Self::Target {207 &mut self.collection208 }209}210211pub trait Config: system::Config + pallet_evm_coder_substrate::Config + Sized {212 type Event: From<Event<Self>> + Into<<Self as system::Config>::Event>;213214 /// Weight information for extrinsics in this pallet.215 type WeightInfo: WeightInfo;216217 type EvmAddressMapping: pallet_evm::AddressMapping<Self::AccountId>;218 type EvmBackwardsAddressMapping: EvmBackwardsAddressMapping<Self::AccountId>;219220 type CrossAccountId: CrossAccountId<Self::AccountId>;221 type Currency: Currency<Self::AccountId>;222 type CollectionCreationPrice: Get<223 <<Self as Config>::Currency as Currency<Self::AccountId>>::Balance,224 >;225 type TreasuryAccountId: Get<Self::AccountId>;226}227228type SelfWeightOf<T> = <T as Config>::WeightInfo;229230trait WeightInfoHelpers: WeightInfo {231 fn transfer() -> Weight {232 Self::transfer_nft()233 .max(Self::transfer_fungible())234 .max(Self::transfer_refungible())235 }236 fn transfer_from() -> Weight {237 Self::transfer_from_nft()238 .max(Self::transfer_from_fungible())239 .max(Self::transfer_from_refungible())240 }241 fn approve() -> Weight {242 // TODO: refungible, fungible243 Self::approve_nft()244 }245 fn set_variable_meta_data(data: u32) -> Weight {246 // TODO: refungible247 Self::set_variable_meta_data_nft(data)248 }249 fn create_item(data: u32) -> Weight {250 Self::create_item_nft(data)251 .max(Self::create_item_fungible())252 .max(Self::create_item_refungible(data))253 }254 fn burn_item() -> Weight {255 // TODO: refungible, fungible256 Self::burn_item_nft()257 }258}259impl<T: WeightInfo> WeightInfoHelpers for T {}260261// # Used definitions262//263// ## User control levels264//265// chain-controlled - key is uncontrolled by user266// i.e autoincrementing index267// can use non-cryptographic hash268// real - key is controlled by user269// but it is hard to generate enough colliding values, i.e owner of signed txs270// can use non-cryptographic hash271// controlled - key is completly controlled by users272// i.e maps with mutable keys273// should use cryptographic hash274//275// ## User control level downgrade reasons276//277// ?1 - chain-controlled -> controlled278// collections/tokens can be destroyed, resulting in massive holes279// ?2 - chain-controlled -> controlled280// same as ?1, but can be only added, resulting in easier exploitation281// ?3 - real -> controlled282// no confirmation required, so addresses can be easily generated283decl_storage! {284 trait Store for Module<T: Config> as Nft {285286 //#region Private members287 /// Id of next collection288 CreatedCollectionCount: u32;289 /// Used for migrations290 ChainVersion: u64;291 /// Id of last collection token292 /// Collection id (controlled?1)293 ItemListIndex: map hasher(blake2_128_concat) CollectionId => TokenId;294 //#endregion295296 //#region Bound counters297 /// Amount of collections destroyed, used for total amount tracking with298 /// CreatedCollectionCount299 DestroyedCollectionCount: u32;300 /// Total amount of account owned tokens (NFTs + RFTs + unique fungibles)301 /// Account id (real)302 pub AccountItemCount get(fn account_item_count): map hasher(twox_64_concat) T::AccountId => u32;303 //#endregion304305 //#region Basic collections306 /// Collection info307 /// Collection id (controlled?1)308 pub CollectionById get(fn collection_id) config(): map hasher(blake2_128_concat) CollectionId => Option<Collection<T>> = None;309 /// List of collection admins310 /// Collection id (controlled?2)311 pub AdminList get(fn admin_list_collection): map hasher(blake2_128_concat) CollectionId => Vec<T::CrossAccountId>;312 /// Whitelisted collection users313 /// Collection id (controlled?2), user id (controlled?3)314 pub WhiteList get(fn white_list): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) T::AccountId => bool;315 //#endregion316317 /// How many of collection items user have318 /// Collection id (controlled?2), account id (real)319 pub Balance get(fn balance_count): double_map hasher(blake2_128_concat) CollectionId, hasher(twox_64_concat) T::AccountId => u128;320321 /// Amount of items which spender can transfer out of owners account (via transferFrom)322 /// Collection id (controlled?2), (token id (controlled ?2) + owner account id (real) + spender account id (controlled?3))323 /// TODO: Off chain worker should remove from this map when token gets removed324 pub Allowances get(fn approved): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) (TokenId, T::AccountId, T::AccountId) => u128;325326 //#region Item collections327 /// Collection id (controlled?2), token id (controlled?1)328 pub NftItemList get(fn nft_item_id) config(): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<NftItemType<T::CrossAccountId>>;329 /// Collection id (controlled?2), owner (controlled?2)330 pub FungibleItemList get(fn fungible_item_id) config(): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) T::AccountId => FungibleItemType;331 /// Collection id (controlled?2), token id (controlled?1)332 pub ReFungibleItemList get(fn refungible_item_id) config(): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<ReFungibleItemType<T::CrossAccountId>>;333 //#endregion334335 //#region Index list336 /// Collection id (controlled?2), tokens owner (controlled?2)337 pub AddressTokens get(fn address_tokens): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) T::AccountId => Vec<TokenId>;338 //#endregion339340 //#region Tokens transfer rate limit baskets341 /// (Collection id (controlled?2), who created (real))342 /// TODO: Off chain worker should remove from this map when collection gets removed343 pub CreateItemBasket get(fn create_item_basket): map hasher(blake2_128_concat) (CollectionId, T::AccountId) => T::BlockNumber;344 /// Collection id (controlled?2), token id (controlled?2)345 pub NftTransferBasket get(fn nft_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => T::BlockNumber;346 /// Collection id (controlled?2), owning user (real)347 pub FungibleTransferBasket get(fn fungible_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(twox_64_concat) T::AccountId => T::BlockNumber;348 /// Collection id (controlled?2), token id (controlled?2)349 pub ReFungibleTransferBasket get(fn refungible_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => T::BlockNumber;350 //#endregion351352 /// Variable metadata sponsoring353 /// Collection id (controlled?2), token id (controlled?2)354 pub VariableMetaDataBasket get(fn variable_meta_data_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<T::BlockNumber> = None;355 }356 add_extra_genesis {357 build(|config: &GenesisConfig<T>| {358 // Modification of storage359 for (_num, _c) in &config.collection_id {360 <Module<T>>::init_collection(_c);361 }362363 for (_num, _c, _i) in &config.nft_item_id {364 <Module<T>>::init_nft_token(*_c, _i);365 }366367 for (collection_id, account_id, fungible_item) in &config.fungible_item_id {368 <Module<T>>::init_fungible_token(*collection_id, &T::CrossAccountId::from_sub(account_id.clone()), fungible_item);369 }370371 for (_num, _c, _i) in &config.refungible_item_id {372 <Module<T>>::init_refungible_token(*_c, _i);373 }374 })375 }376}377378decl_event!(379 pub enum Event<T>380 where381 AccountId = <T as frame_system::Config>::AccountId,382 CrossAccountId = <T as Config>::CrossAccountId,383 {384 /// New collection was created385 ///386 /// # Arguments387 ///388 /// * collection_id: Globally unique identifier of newly created collection.389 ///390 /// * mode: [CollectionMode] converted into u8.391 ///392 /// * account_id: Collection owner.393 CollectionCreated(CollectionId, u8, AccountId),394395 /// New item was created.396 ///397 /// # Arguments398 ///399 /// * collection_id: Id of the collection where item was created.400 ///401 /// * item_id: Id of an item. Unique within the collection.402 ///403 /// * recipient: Owner of newly created item404 ItemCreated(CollectionId, TokenId, CrossAccountId),405406 /// Collection item was burned.407 ///408 /// # Arguments409 ///410 /// collection_id.411 ///412 /// item_id: Identifier of burned NFT.413 ItemDestroyed(CollectionId, TokenId),414415 /// Item was transferred416 ///417 /// * collection_id: Id of collection to which item is belong418 ///419 /// * item_id: Id of an item420 ///421 /// * sender: Original owner of item422 ///423 /// * recipient: New owner of item424 ///425 /// * amount: Always 1 for NFT426 Transfer(CollectionId, TokenId, CrossAccountId, CrossAccountId, u128),427428 /// * collection_id429 ///430 /// * item_id431 ///432 /// * sender433 ///434 /// * spender435 ///436 /// * amount437 Approved(CollectionId, TokenId, CrossAccountId, CrossAccountId, u128),438 }439);440441decl_module! {442 pub struct Module<T: Config> for enum Call443 where444 origin: T::Origin445 {446 fn deposit_event() = default;447 const CollectionAdminsLimit: u64 = COLLECTION_ADMINS_LIMIT;448 type Error = Error<T>;449450 fn on_initialize(_now: T::BlockNumber) -> Weight {451 0452 }453454 /// 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.455 ///456 /// # Permissions457 ///458 /// * Anyone.459 ///460 /// # Arguments461 ///462 /// * collection_name: UTF-16 string with collection name (limit 64 characters), will be stored as zero-terminated.463 ///464 /// * collection_description: UTF-16 string with collection description (limit 256 characters), will be stored as zero-terminated.465 ///466 /// * token_prefix: UTF-8 string with token prefix.467 ///468 /// * mode: [CollectionMode] collection type and type dependent data.469 // returns collection ID470 #[weight = <SelfWeightOf<T>>::create_collection()]471 #[transactional]472 pub fn create_collection(origin,473 collection_name: Vec<u16>,474 collection_description: Vec<u16>,475 token_prefix: Vec<u8>,476 mode: CollectionMode) -> DispatchResult {477478 // Anyone can create a collection479 let who = ensure_signed(origin)?;480481 // Take a (non-refundable) deposit of collection creation482 let mut imbalance = <<<T as Config>::Currency as Currency<T::AccountId>>::PositiveImbalance>::zero();483 imbalance.subsume(<<T as Config>::Currency as Currency<T::AccountId>>::deposit_creating(484 &T::TreasuryAccountId::get(),485 T::CollectionCreationPrice::get(),486 ));487 <T as Config>::Currency::settle(488 &who,489 imbalance,490 WithdrawReasons::TRANSFER,491 ExistenceRequirement::KeepAlive,492 ).map_err(|_| Error::<T>::NoPermission)?;493494 let decimal_points = match mode {495 CollectionMode::Fungible(points) => points,496 _ => 0497 };498499 let created_count = CreatedCollectionCount::get();500 let destroyed_count = DestroyedCollectionCount::get();501502 // bound Total number of collections503 ensure!(created_count - destroyed_count < COLLECTION_NUMBER_LIMIT, Error::<T>::TotalCollectionsLimitExceeded);504505 // check params506 ensure!(decimal_points <= MAX_DECIMAL_POINTS, Error::<T>::CollectionDecimalPointLimitExceeded);507 ensure!(collection_name.len() <= MAX_COLLECTION_NAME_LENGTH, Error::<T>::CollectionNameLimitExceeded);508 ensure!(collection_description.len() <= MAX_COLLECTION_DESCRIPTION_LENGTH, Error::<T>::CollectionDescriptionLimitExceeded);509 ensure!(token_prefix.len() <= MAX_TOKEN_PREFIX_LENGTH, Error::<T>::CollectionTokenPrefixLimitExceeded);510511 // Generate next collection ID512 let next_id = created_count513 .checked_add(1)514 .ok_or(Error::<T>::NumOverflow)?;515516 CreatedCollectionCount::put(next_id);517518 let limits = CollectionLimits {519 sponsored_data_size: CUSTOM_DATA_LIMIT,520 ..Default::default()521 };522523 // Create new collection524 let new_collection = Collection {525 owner: who.clone(),526 name: collection_name,527 mode: mode.clone(),528 mint_mode: false,529 access: AccessMode::Normal,530 description: collection_description,531 decimal_points,532 token_prefix,533 offchain_schema: Vec::new(),534 schema_version: SchemaVersion::ImageURL,535 sponsorship: SponsorshipState::Disabled,536 variable_on_chain_schema: Vec::new(),537 const_on_chain_schema: Vec::new(),538 limits,539 transfers_enabled: true,540 };541542 // Add new collection to map543 <CollectionById<T>>::insert(next_id, new_collection);544545 // call event546 Self::deposit_event(RawEvent::CollectionCreated(next_id, mode.id(), who));547548 Ok(())549 }550551 /// **DANGEROUS**: Destroys collection and all NFTs within this collection. Users irrecoverably lose their assets and may lose real money.552 ///553 /// # Permissions554 ///555 /// * Collection Owner.556 ///557 /// # Arguments558 ///559 /// * collection_id: collection to destroy.560 #[weight = <SelfWeightOf<T>>::destroy_collection()]561 #[transactional]562 pub fn destroy_collection(origin, collection_id: CollectionId) -> DispatchResult {563564 let sender = ensure_signed(origin)?;565 let collection = Self::get_collection(collection_id)?;566 Self::check_owner_permissions(&collection, &sender)?;567 if !collection.limits.owner_can_destroy {568 fail!(Error::<T>::NoPermission);569 }570571 <AddressTokens<T>>::remove_prefix(collection_id, None);572 <Allowances<T>>::remove_prefix(collection_id, None);573 <Balance<T>>::remove_prefix(collection_id, None);574 <ItemListIndex>::remove(collection_id);575 <AdminList<T>>::remove(collection_id);576 <CollectionById<T>>::remove(collection_id);577 <WhiteList<T>>::remove_prefix(collection_id, None);578579 <NftItemList<T>>::remove_prefix(collection_id, None);580 <FungibleItemList<T>>::remove_prefix(collection_id, None);581 <ReFungibleItemList<T>>::remove_prefix(collection_id, None);582583 <NftTransferBasket<T>>::remove_prefix(collection_id, None);584 <FungibleTransferBasket<T>>::remove_prefix(collection_id, None);585 <ReFungibleTransferBasket<T>>::remove_prefix(collection_id, None);586587 <VariableMetaDataBasket<T>>::remove_prefix(collection_id, None);588589 DestroyedCollectionCount::put(DestroyedCollectionCount::get()590 .checked_add(1)591 .ok_or(Error::<T>::NumOverflow)?);592593 Ok(())594 }595596 /// Add an address to white list.597 ///598 /// # Permissions599 ///600 /// * Collection Owner601 /// * Collection Admin602 ///603 /// # Arguments604 ///605 /// * collection_id.606 ///607 /// * address.608 #[weight = <SelfWeightOf<T>>::add_to_white_list()]609 #[transactional]610 pub fn add_to_white_list(origin, collection_id: CollectionId, address: T::CrossAccountId) -> DispatchResult{611612 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);613 let collection = Self::get_collection(collection_id)?;614615 Self::toggle_white_list_internal(616 &sender,617 &collection,618 &address,619 true,620 )?;621622 Ok(())623 }624625 /// Remove an address from white list.626 ///627 /// # Permissions628 ///629 /// * Collection Owner630 /// * Collection Admin631 ///632 /// # Arguments633 ///634 /// * collection_id.635 ///636 /// * address.637 #[weight = <SelfWeightOf<T>>::remove_from_white_list()]638 #[transactional]639 pub fn remove_from_white_list(origin, collection_id: CollectionId, address: T::CrossAccountId) -> DispatchResult{640641 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);642 let collection = Self::get_collection(collection_id)?;643644 Self::toggle_white_list_internal(645 &sender,646 &collection,647 &address,648 false,649 )?;650651 Ok(())652 }653654 /// Toggle between normal and white list access for the methods with access for `Anyone`.655 ///656 /// # Permissions657 ///658 /// * Collection Owner.659 ///660 /// # Arguments661 ///662 /// * collection_id.663 ///664 /// * mode: [AccessMode]665 #[weight = <SelfWeightOf<T>>::set_public_access_mode()]666 #[transactional]667 pub fn set_public_access_mode(origin, collection_id: CollectionId, mode: AccessMode) -> DispatchResult668 {669 let sender = ensure_signed(origin)?;670671 let mut target_collection = Self::get_collection(collection_id)?;672 Self::check_owner_permissions(&target_collection, &sender)?;673 target_collection.access = mode;674 target_collection.save()675 }676677 /// Allows Anyone to create tokens if:678 /// * White List is enabled, and679 /// * Address is added to white list, and680 /// * This method was called with True parameter681 ///682 /// # Permissions683 /// * Collection Owner684 ///685 /// # Arguments686 ///687 /// * collection_id.688 ///689 /// * mint_permission: Boolean parameter. If True, allows minting to Anyone with conditions above.690 #[weight = <SelfWeightOf<T>>::set_mint_permission()]691 #[transactional]692 pub fn set_mint_permission(origin, collection_id: CollectionId, mint_permission: bool) -> DispatchResult693 {694 let sender = ensure_signed(origin)?;695696 let mut target_collection = Self::get_collection(collection_id)?;697 Self::check_owner_permissions(&target_collection, &sender)?;698 target_collection.mint_mode = mint_permission;699 target_collection.save()700 }701702 /// Change the owner of the collection.703 ///704 /// # Permissions705 ///706 /// * Collection Owner.707 ///708 /// # Arguments709 ///710 /// * collection_id.711 ///712 /// * new_owner.713 #[weight = <SelfWeightOf<T>>::change_collection_owner()]714 #[transactional]715 pub fn change_collection_owner(origin, collection_id: CollectionId, new_owner: T::AccountId) -> DispatchResult {716717 let sender = ensure_signed(origin)?;718 let mut target_collection = Self::get_collection(collection_id)?;719 Self::check_owner_permissions(&target_collection, &sender)?;720 target_collection.owner = new_owner;721 target_collection.save()722 }723724 /// Adds an admin of the Collection.725 /// 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.726 ///727 /// # Permissions728 ///729 /// * Collection Owner.730 /// * Collection Admin.731 ///732 /// # Arguments733 ///734 /// * collection_id: ID of the Collection to add admin for.735 ///736 /// * new_admin_id: Address of new admin to add.737 #[weight = <SelfWeightOf<T>>::add_collection_admin()]738 #[transactional]739 pub fn add_collection_admin(origin, collection_id: CollectionId, new_admin_id: T::CrossAccountId) -> DispatchResult {740 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);741 let collection = Self::get_collection(collection_id)?;742 Self::check_owner_or_admin_permissions(&collection, &sender)?;743 let mut admin_arr = <AdminList<T>>::get(collection_id);744745 match admin_arr.binary_search(&new_admin_id) {746 Ok(_) => {},747 Err(idx) => {748 ensure!(admin_arr.len() < COLLECTION_ADMINS_LIMIT as usize, Error::<T>::CollectionAdminsLimitExceeded);749 admin_arr.insert(idx, new_admin_id);750 <AdminList<T>>::insert(collection_id, admin_arr);751 }752 }753 Ok(())754 }755756 /// 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.757 ///758 /// # Permissions759 ///760 /// * Collection Owner.761 /// * Collection Admin.762 ///763 /// # Arguments764 ///765 /// * collection_id: ID of the Collection to remove admin for.766 ///767 /// * account_id: Address of admin to remove.768 #[weight = <SelfWeightOf<T>>::remove_collection_admin()]769 #[transactional]770 pub fn remove_collection_admin(origin, collection_id: CollectionId, account_id: T::CrossAccountId) -> DispatchResult {771 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);772 let collection = Self::get_collection(collection_id)?;773 Self::check_owner_or_admin_permissions(&collection, &sender)?;774 let mut admin_arr = <AdminList<T>>::get(collection_id);775776 if let Ok(idx) = admin_arr.binary_search(&account_id) {777 admin_arr.remove(idx);778 <AdminList<T>>::insert(collection_id, admin_arr);779 }780 Ok(())781 }782783 /// # Permissions784 ///785 /// * Collection Owner786 ///787 /// # Arguments788 ///789 /// * collection_id.790 ///791 /// * new_sponsor.792 #[weight = <SelfWeightOf<T>>::set_collection_sponsor()]793 #[transactional]794 pub fn set_collection_sponsor(origin, collection_id: CollectionId, new_sponsor: T::AccountId) -> DispatchResult {795 let sender = ensure_signed(origin)?;796 let mut target_collection = Self::get_collection(collection_id)?;797 Self::check_owner_permissions(&target_collection, &sender)?;798799 target_collection.sponsorship = SponsorshipState::Unconfirmed(new_sponsor);800 target_collection.save()801 }802803 /// # Permissions804 ///805 /// * Sponsor.806 ///807 /// # Arguments808 ///809 /// * collection_id.810 #[weight = <SelfWeightOf<T>>::confirm_sponsorship()]811 #[transactional]812 pub fn confirm_sponsorship(origin, collection_id: CollectionId) -> DispatchResult {813 let sender = ensure_signed(origin)?;814815 let mut target_collection = Self::get_collection(collection_id)?;816 ensure!(817 target_collection.sponsorship.pending_sponsor() == Some(&sender),818 Error::<T>::ConfirmUnsetSponsorFail819 );820821 target_collection.sponsorship = SponsorshipState::Confirmed(sender);822 target_collection.save()823 }824825 /// Switch back to pay-per-own-transaction model.826 ///827 /// # Permissions828 ///829 /// * Collection owner.830 ///831 /// # Arguments832 ///833 /// * collection_id.834 #[weight = <SelfWeightOf<T>>::remove_collection_sponsor()]835 #[transactional]836 pub fn remove_collection_sponsor(origin, collection_id: CollectionId) -> DispatchResult {837 let sender = ensure_signed(origin)?;838839 let mut target_collection = Self::get_collection(collection_id)?;840 Self::check_owner_permissions(&target_collection, &sender)?;841842 target_collection.sponsorship = SponsorshipState::Disabled;843 target_collection.save()844 }845846 /// This method creates a concrete instance of NFT Collection created with CreateCollection method.847 ///848 /// # Permissions849 ///850 /// * Collection Owner.851 /// * Collection Admin.852 /// * Anyone if853 /// * White List is enabled, and854 /// * Address is added to white list, and855 /// * MintPermission is enabled (see SetMintPermission method)856 ///857 /// # Arguments858 ///859 /// * collection_id: ID of the collection.860 ///861 /// * owner: Address, initial owner of the NFT.862 ///863 /// * data: Token data to store on chain.864 // #[weight =865 // (130_000_000 as Weight)866 // .saturating_add((2135 as Weight).saturating_mul((properties.len() as u64) as Weight))867 // .saturating_add(RocksDbWeight::get().reads(10 as Weight))868 // .saturating_add(RocksDbWeight::get().writes(8 as Weight))]869870 #[weight = <SelfWeightOf<T>>::create_item(data.data_size() as u32)]871 #[transactional]872 pub fn create_item(origin, collection_id: CollectionId, owner: T::CrossAccountId, data: CreateItemData) -> DispatchResult {873 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);874 let collection = Self::get_collection(collection_id)?;875876 Self::create_item_internal(&sender, &collection, &owner, data)?;877878 collection.submit_logs()879 }880881 /// This method creates multiple items in a collection created with CreateCollection method.882 ///883 /// # Permissions884 ///885 /// * Collection Owner.886 /// * Collection Admin.887 /// * Anyone if888 /// * White List is enabled, and889 /// * Address is added to white list, and890 /// * MintPermission is enabled (see SetMintPermission method)891 ///892 /// # Arguments893 ///894 /// * collection_id: ID of the collection.895 ///896 /// * itemsData: Array items properties. Each property is an array of bytes itself, see [create_item].897 ///898 /// * owner: Address, initial owner of the NFT.899 #[weight = <SelfWeightOf<T>>::create_item(items_data.iter()900 .map(|data| { data.data_size() as u32 })901 .sum())]902 #[transactional]903 pub fn create_multiple_items(origin, collection_id: CollectionId, owner: T::CrossAccountId, items_data: Vec<CreateItemData>) -> DispatchResult {904905 ensure!(!items_data.is_empty(), Error::<T>::EmptyArgument);906 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);907 let collection = Self::get_collection(collection_id)?;908909 Self::create_multiple_items_internal(&sender, &collection, &owner, items_data)?;910911 collection.submit_logs()912 }913914 // TODO! transaction weight915916 /// Set transfers_enabled value for particular collection917 ///918 /// # Permissions919 ///920 /// * Collection Owner.921 ///922 /// # Arguments923 ///924 /// * collection_id: ID of the collection.925 ///926 /// * value: New flag value.927 #[weight = <SelfWeightOf<T>>::burn_item()]928 #[transactional]929 pub fn set_transfers_enabled_flag(origin, collection_id: CollectionId, value: bool) -> DispatchResult {930931 let sender = ensure_signed(origin)?;932 let mut target_collection = Self::get_collection(collection_id)?;933934 Self::check_owner_permissions(&target_collection, &sender)?;935936 target_collection.transfers_enabled = value;937 target_collection.save()938 }939940 /// Destroys a concrete instance of NFT.941 ///942 /// # Permissions943 ///944 /// * Collection Owner.945 /// * Collection Admin.946 /// * Current NFT Owner.947 ///948 /// # Arguments949 ///950 /// * collection_id: ID of the collection.951 ///952 /// * item_id: ID of NFT to burn.953 #[weight = <SelfWeightOf<T>>::burn_item()]954 #[transactional]955 pub fn burn_item(origin, collection_id: CollectionId, item_id: TokenId, value: u128) -> DispatchResult {956957 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);958 let target_collection = Self::get_collection(collection_id)?;959960 Self::burn_item_internal(&sender, &target_collection, item_id, value)?;961962 target_collection.submit_logs()963 }964965 /// Change ownership of the token.966 ///967 /// # Permissions968 ///969 /// * Collection Owner970 /// * Collection Admin971 /// * Current NFT owner972 ///973 /// # Arguments974 ///975 /// * recipient: Address of token recipient.976 ///977 /// * collection_id.978 ///979 /// * item_id: ID of the item980 /// * Non-Fungible Mode: Required.981 /// * Fungible Mode: Ignored.982 /// * Re-Fungible Mode: Required.983 ///984 /// * value: Amount to transfer.985 /// * Non-Fungible Mode: Ignored986 /// * Fungible Mode: Must specify transferred amount987 /// * Re-Fungible Mode: Must specify transferred portion (between 0 and 1)988 #[weight = <SelfWeightOf<T>>::transfer()]989 #[transactional]990 pub fn transfer(origin, recipient: T::CrossAccountId, collection_id: CollectionId, item_id: TokenId, value: u128) -> DispatchResult {991 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);992 let collection = Self::get_collection(collection_id)?;993994 Self::transfer_internal(&sender, &recipient, &collection, item_id, value)?;995996 collection.submit_logs()997 }998999 /// Set, change, or remove approved address to transfer the ownership of the NFT.1000 ///1001 /// # Permissions1002 ///1003 /// * Collection Owner1004 /// * Collection Admin1005 /// * Current NFT owner1006 ///1007 /// # Arguments1008 ///1009 /// * approved: Address that is approved to transfer this NFT or zero (if needed to remove approval).1010 ///1011 /// * collection_id.1012 ///1013 /// * item_id: ID of the item.1014 #[weight = <SelfWeightOf<T>>::approve()]1015 #[transactional]1016 pub fn approve(origin, spender: T::CrossAccountId, collection_id: CollectionId, item_id: TokenId, amount: u128) -> DispatchResult {1017 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);1018 let collection = Self::get_collection(collection_id)?;10191020 Self::approve_internal(&sender, &spender, &collection, item_id, amount)?;10211022 collection.submit_logs()1023 }10241025 /// 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.1026 ///1027 /// # Permissions1028 /// * Collection Owner1029 /// * Collection Admin1030 /// * Current NFT owner1031 /// * Address approved by current NFT owner1032 ///1033 /// # Arguments1034 ///1035 /// * from: Address that owns token.1036 ///1037 /// * recipient: Address of token recipient.1038 ///1039 /// * collection_id.1040 ///1041 /// * item_id: ID of the item.1042 ///1043 /// * value: Amount to transfer.1044 #[weight = <SelfWeightOf<T>>::transfer_from()]1045 #[transactional]1046 pub fn transfer_from(origin, from: T::CrossAccountId, recipient: T::CrossAccountId, collection_id: CollectionId, item_id: TokenId, value: u128 ) -> DispatchResult {1047 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);1048 let collection = Self::get_collection(collection_id)?;10491050 Self::transfer_from_internal(&sender, &from, &recipient, &collection, item_id, value)?;10511052 collection.submit_logs()1053 }1054 // #[weight = 0]1055 // // let no_perm_mes = "You do not have permissions to modify this collection";1056 // // ensure!(<ApprovedList<T>>::contains_key((collection_id, item_id)), no_perm_mes);1057 // // let list_itm = <ApprovedList<T>>::get((collection_id, item_id));1058 // // ensure!(list_itm.contains(&new_owner.clone()), no_perm_mes);10591060 // // // on_nft_received call10611062 // // Self::transfer(origin, collection_id, item_id, new_owner)?;10631064 // Ok(())1065 // }10661067 /// Set off-chain data schema.1068 ///1069 /// # Permissions1070 ///1071 /// * Collection Owner1072 /// * Collection Admin1073 ///1074 /// # Arguments1075 ///1076 /// * collection_id.1077 ///1078 /// * schema: String representing the offchain data schema.1079 #[weight = <SelfWeightOf<T>>::set_variable_meta_data(data.len() as u32)]1080 #[transactional]1081 pub fn set_variable_meta_data (1082 origin,1083 collection_id: CollectionId,1084 item_id: TokenId,1085 data: Vec<u8>1086 ) -> DispatchResult {1087 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);10881089 let collection = Self::get_collection(collection_id)?;10901091 Self::set_variable_meta_data_internal(&sender, &collection, item_id, data)?;10921093 Ok(())1094 }10951096 /// Set schema standard1097 /// ImageURL1098 /// Unique1099 ///1100 /// # Permissions1101 ///1102 /// * Collection Owner1103 /// * Collection Admin1104 ///1105 /// # Arguments1106 ///1107 /// * collection_id.1108 ///1109 /// * schema: SchemaVersion: enum1110 #[weight = <SelfWeightOf<T>>::set_schema_version()]1111 #[transactional]1112 pub fn set_schema_version(1113 origin,1114 collection_id: CollectionId,1115 version: SchemaVersion1116 ) -> DispatchResult {1117 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);1118 let mut target_collection = Self::get_collection(collection_id)?;1119 Self::check_owner_or_admin_permissions(&target_collection, &sender)?;1120 target_collection.schema_version = version;1121 target_collection.save()1122 }11231124 /// Set off-chain data schema.1125 ///1126 /// # Permissions1127 ///1128 /// * Collection Owner1129 /// * Collection Admin1130 ///1131 /// # Arguments1132 ///1133 /// * collection_id.1134 ///1135 /// * schema: String representing the offchain data schema.1136 #[weight = <SelfWeightOf<T>>::set_offchain_schema(schema.len() as u32)]1137 #[transactional]1138 pub fn set_offchain_schema(1139 origin,1140 collection_id: CollectionId,1141 schema: Vec<u8>1142 ) -> DispatchResult {1143 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);1144 let mut target_collection = Self::get_collection(collection_id)?;1145 Self::check_owner_or_admin_permissions(&target_collection, &sender)?;11461147 // check schema limit1148 ensure!(schema.len() as u32 <= OFFCHAIN_SCHEMA_LIMIT, "");11491150 target_collection.offchain_schema = schema;1151 target_collection.save()1152 }11531154 /// Set const on-chain data schema.1155 ///1156 /// # Permissions1157 ///1158 /// * Collection Owner1159 /// * Collection Admin1160 ///1161 /// # Arguments1162 ///1163 /// * collection_id.1164 ///1165 /// * schema: String representing the const on-chain data schema.1166 #[weight = <SelfWeightOf<T>>::set_const_on_chain_schema(schema.len() as u32)]1167 #[transactional]1168 pub fn set_const_on_chain_schema (1169 origin,1170 collection_id: CollectionId,1171 schema: Vec<u8>1172 ) -> DispatchResult {1173 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);1174 let mut target_collection = Self::get_collection(collection_id)?;1175 Self::check_owner_or_admin_permissions(&target_collection, &sender)?;11761177 // check schema limit1178 ensure!(schema.len() as u32 <= CONST_ON_CHAIN_SCHEMA_LIMIT, "");11791180 target_collection.const_on_chain_schema = schema;1181 target_collection.save()1182 }11831184 /// Set variable on-chain data schema.1185 ///1186 /// # Permissions1187 ///1188 /// * Collection Owner1189 /// * Collection Admin1190 ///1191 /// # Arguments1192 ///1193 /// * collection_id.1194 ///1195 /// * schema: String representing the variable on-chain data schema.1196 #[weight = <SelfWeightOf<T>>::set_const_on_chain_schema(schema.len() as u32)]1197 #[transactional]1198 pub fn set_variable_on_chain_schema (1199 origin,1200 collection_id: CollectionId,1201 schema: Vec<u8>1202 ) -> DispatchResult {1203 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);1204 let mut target_collection = Self::get_collection(collection_id)?;1205 Self::check_owner_or_admin_permissions(&target_collection, &sender)?;12061207 // check schema limit1208 ensure!(schema.len() as u32 <= VARIABLE_ON_CHAIN_SCHEMA_LIMIT, "");12091210 target_collection.variable_on_chain_schema = schema;1211 target_collection.save()1212 }12131214 #[weight = <SelfWeightOf<T>>::set_collection_limits()]1215 #[transactional]1216 pub fn set_collection_limits(1217 origin,1218 collection_id: u32,1219 new_limits: CollectionLimits<T::BlockNumber>,1220 ) -> DispatchResult {1221 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);1222 let mut target_collection = Self::get_collection(collection_id)?;1223 Self::check_owner_permissions(&target_collection, sender.as_sub())?;1224 let old_limits = &target_collection.limits;12251226 // collection bounds1227 ensure!(new_limits.sponsor_transfer_timeout <= MAX_SPONSOR_TIMEOUT &&1228 new_limits.account_token_ownership_limit <= MAX_TOKEN_OWNERSHIP &&1229 new_limits.sponsored_data_size <= CUSTOM_DATA_LIMIT,1230 Error::<T>::CollectionLimitBoundsExceeded);12311232 // token_limit check prev1233 ensure!(old_limits.token_limit >= new_limits.token_limit, Error::<T>::CollectionTokenLimitExceeded);1234 ensure!(new_limits.token_limit > 0, Error::<T>::CollectionTokenLimitExceeded);12351236 ensure!(1237 (old_limits.owner_can_transfer || !new_limits.owner_can_transfer) &&1238 (old_limits.owner_can_destroy || !new_limits.owner_can_destroy),1239 Error::<T>::OwnerPermissionsCantBeReverted,1240 );12411242 target_collection.limits = new_limits;12431244 target_collection.save()1245 }1246 }1247}12481249impl<T: Config> Module<T> {1250 pub fn create_item_internal(1251 sender: &T::CrossAccountId,1252 collection: &CollectionHandle<T>,1253 owner: &T::CrossAccountId,1254 data: CreateItemData,1255 ) -> DispatchResult {1256 ensure!(1257 owner != &T::CrossAccountId::from_eth(H160([0; 20])),1258 Error::<T>::AddressIsZero1259 );12601261 Self::can_create_items_in_collection(collection, sender, owner, 1)?;1262 Self::validate_create_item_args(collection, &data)?;1263 Self::create_item_no_validation(collection, owner, data)?;12641265 Ok(())1266 }12671268 pub fn transfer_internal(1269 sender: &T::CrossAccountId,1270 recipient: &T::CrossAccountId,1271 target_collection: &CollectionHandle<T>,1272 item_id: TokenId,1273 value: u128,1274 ) -> DispatchResult {1275 ensure!(1276 recipient != &T::CrossAccountId::from_eth(H160([0; 20])),1277 Error::<T>::AddressIsZero1278 );12791280 // Limits check1281 Self::is_correct_transfer(target_collection, recipient)?;12821283 // Transfer permissions check1284 ensure!(1285 Self::is_item_owner(sender, target_collection, item_id)?1286 || Self::is_owner_or_admin_permissions(target_collection, sender)?,1287 Error::<T>::NoPermission1288 );12891290 if target_collection.access == AccessMode::WhiteList {1291 Self::check_white_list(target_collection, sender)?;1292 Self::check_white_list(target_collection, recipient)?;1293 }12941295 match target_collection.mode {1296 CollectionMode::NFT => Self::transfer_nft(1297 target_collection,1298 item_id,1299 sender.clone(),1300 recipient.clone(),1301 )?,1302 CollectionMode::Fungible(_) => {1303 Self::transfer_fungible(target_collection, value, sender, recipient)?1304 }1305 CollectionMode::ReFungible => Self::transfer_refungible(1306 target_collection,1307 item_id,1308 value,1309 sender.clone(),1310 recipient.clone(),1311 )?,1312 _ => (),1313 };13141315 Self::deposit_event(RawEvent::Transfer(1316 target_collection.id,1317 item_id,1318 sender.clone(),1319 recipient.clone(),1320 value,1321 ));13221323 Ok(())1324 }13251326 pub fn approve_internal(1327 sender: &T::CrossAccountId,1328 spender: &T::CrossAccountId,1329 collection: &CollectionHandle<T>,1330 item_id: TokenId,1331 amount: u128,1332 ) -> DispatchResult {1333 Self::token_exists(collection, item_id)?;13341335 // Transfer permissions check1336 let bypasses_limits = collection.limits.owner_can_transfer1337 && Self::is_owner_or_admin_permissions(collection, sender)?;13381339 let allowance_limit = if bypasses_limits {1340 None1341 } else if let Some(amount) = Self::owned_amount(sender, collection, item_id)? {1342 Some(amount)1343 } else {1344 fail!(Error::<T>::NoPermission);1345 };13461347 if collection.access == AccessMode::WhiteList {1348 Self::check_white_list(collection, sender)?;1349 Self::check_white_list(collection, spender)?;1350 }13511352 collection.consume_sload()?;1353 let allowance: u128 = amount1354 .checked_add(<Allowances<T>>::get(1355 collection.id,1356 (item_id, sender.as_sub(), spender.as_sub()),1357 ))1358 .ok_or(Error::<T>::NumOverflow)?;1359 if let Some(limit) = allowance_limit {1360 ensure!(limit >= allowance, Error::<T>::TokenValueTooLow);1361 }1362 collection.consume_sstore()?;1363 <Allowances<T>>::insert(1364 collection.id,1365 (item_id, sender.as_sub(), spender.as_sub()),1366 allowance,1367 );13681369 if matches!(collection.mode, CollectionMode::NFT) {1370 // TODO: NFT: only one owner may exist for token in ERC7211371 collection.log(ERC721Events::Approval {1372 owner: *sender.as_eth(),1373 approved: *spender.as_eth(),1374 token_id: item_id.into(),1375 })?;1376 }13771378 if matches!(collection.mode, CollectionMode::Fungible(_)) {1379 // TODO: NFT: only one owner may exist for token in ERC201380 collection.log(ERC20Events::Approval {1381 owner: *sender.as_eth(),1382 spender: *spender.as_eth(),1383 value: allowance.into(),1384 })?;1385 }13861387 Self::deposit_event(RawEvent::Approved(1388 collection.id,1389 item_id,1390 sender.clone(),1391 spender.clone(),1392 allowance,1393 ));1394 Ok(())1395 }13961397 pub fn transfer_from_internal(1398 sender: &T::CrossAccountId,1399 from: &T::CrossAccountId,1400 recipient: &T::CrossAccountId,1401 collection: &CollectionHandle<T>,1402 item_id: TokenId,1403 amount: u128,1404 ) -> DispatchResult {1405 if sender == from {1406 // Transfer by `from`, because it is either equal to sender, or derived from him1407 return Self::transfer_internal(from, recipient, collection, item_id, amount);1408 }14091410 // Check approval1411 collection.consume_sload()?;1412 let approval: u128 =1413 <Allowances<T>>::get(collection.id, (item_id, from.as_sub(), sender.as_sub()));14141415 // Limits check1416 Self::is_correct_transfer(collection, recipient)?;14171418 // Transfer permissions check1419 ensure!(1420 approval >= amount1421 || (collection.limits.owner_can_transfer1422 && Self::is_owner_or_admin_permissions(collection, sender)?),1423 Error::<T>::NoPermission1424 );14251426 if collection.access == AccessMode::WhiteList {1427 Self::check_white_list(collection, sender)?;1428 Self::check_white_list(collection, recipient)?;1429 }14301431 // Reduce approval by transferred amount or remove if remaining approval drops to 01432 let allowance = approval.saturating_sub(amount);1433 collection.consume_sstore()?;1434 if allowance > 0 {1435 <Allowances<T>>::insert(1436 collection.id,1437 (item_id, from.as_sub(), sender.as_sub()),1438 allowance,1439 );1440 } else {1441 <Allowances<T>>::remove(collection.id, (item_id, from.as_sub(), sender.as_sub()));1442 }14431444 match collection.mode {1445 CollectionMode::NFT => {1446 Self::transfer_nft(collection, item_id, from.clone(), recipient.clone())?1447 }1448 CollectionMode::Fungible(_) => {1449 Self::transfer_fungible(collection, amount, from, recipient)?1450 }1451 CollectionMode::ReFungible => Self::transfer_refungible(1452 collection,1453 item_id,1454 amount,1455 from.clone(),1456 recipient.clone(),1457 )?,1458 _ => (),1459 };14601461 if matches!(collection.mode, CollectionMode::Fungible(_)) {1462 collection.log(ERC20Events::Approval {1463 owner: *from.as_eth(),1464 spender: *sender.as_eth(),1465 value: allowance.into(),1466 })?;1467 }14681469 Ok(())1470 }14711472 pub fn set_variable_meta_data_internal(1473 sender: &T::CrossAccountId,1474 collection: &CollectionHandle<T>,1475 item_id: TokenId,1476 data: Vec<u8>,1477 ) -> DispatchResult {1478 Self::token_exists(collection, item_id)?;14791480 ensure!(1481 CUSTOM_DATA_LIMIT >= data.len() as u32,1482 Error::<T>::TokenVariableDataLimitExceeded1483 );14841485 // Modify permissions check1486 ensure!(1487 Self::is_item_owner(sender, collection, item_id)?1488 || Self::is_owner_or_admin_permissions(collection, sender)?,1489 Error::<T>::NoPermission1490 );14911492 match collection.mode {1493 CollectionMode::NFT => Self::set_nft_variable_data(collection, item_id, data)?,1494 CollectionMode::ReFungible => {1495 Self::set_re_fungible_variable_data(collection, item_id, data)?1496 }1497 CollectionMode::Fungible(_) => fail!(Error::<T>::CantStoreMetadataInFungibleTokens),1498 _ => fail!(Error::<T>::UnexpectedCollectionType),1499 };15001501 Ok(())1502 }15031504 pub fn get_variable_metadata(1505 collection: &CollectionHandle<T>,1506 item_id: TokenId,1507 ) -> Result<Vec<u8>, DispatchError> {1508 Ok(match collection.mode {1509 CollectionMode::NFT => {1510 <NftItemList<T>>::get(collection.id, item_id)1511 .ok_or(Error::<T>::TokenNotFound)?1512 .variable_data1513 }1514 CollectionMode::ReFungible => {1515 <ReFungibleItemList<T>>::get(collection.id, item_id)1516 .ok_or(Error::<T>::TokenNotFound)?1517 .variable_data1518 }1519 _ => fail!(Error::<T>::UnexpectedCollectionType),1520 })1521 }15221523 pub fn create_multiple_items_internal(1524 sender: &T::CrossAccountId,1525 collection: &CollectionHandle<T>,1526 owner: &T::CrossAccountId,1527 items_data: Vec<CreateItemData>,1528 ) -> DispatchResult {1529 Self::can_create_items_in_collection(collection, sender, owner, items_data.len() as u32)?;15301531 for data in &items_data {1532 Self::validate_create_item_args(collection, data)?;1533 }1534 for data in &items_data {1535 Self::create_item_no_validation(collection, owner, data.clone())?;1536 }15371538 Ok(())1539 }15401541 pub fn burn_item_internal(1542 sender: &T::CrossAccountId,1543 collection: &CollectionHandle<T>,1544 item_id: TokenId,1545 value: u128,1546 ) -> DispatchResult {1547 ensure!(1548 Self::is_item_owner(sender, collection, item_id)?1549 || (collection.limits.owner_can_transfer1550 && Self::is_owner_or_admin_permissions(collection, sender)?),1551 Error::<T>::NoPermission1552 );15531554 if collection.access == AccessMode::WhiteList {1555 Self::check_white_list(collection, sender)?;1556 }15571558 match collection.mode {1559 CollectionMode::NFT => Self::burn_nft_item(collection, item_id)?,1560 CollectionMode::Fungible(_) => Self::burn_fungible_item(sender, collection, value)?,1561 CollectionMode::ReFungible => Self::burn_refungible_item(collection, item_id, sender)?,1562 _ => (),1563 };15641565 Ok(())1566 }15671568 pub fn toggle_white_list_internal(1569 sender: &T::CrossAccountId,1570 collection: &CollectionHandle<T>,1571 address: &T::CrossAccountId,1572 whitelisted: bool,1573 ) -> DispatchResult {1574 Self::check_owner_or_admin_permissions(collection, sender)?;15751576 if whitelisted {1577 <WhiteList<T>>::insert(collection.id, address.as_sub(), true);1578 } else {1579 <WhiteList<T>>::remove(collection.id, address.as_sub());1580 }15811582 Ok(())1583 }15841585 fn is_correct_transfer(1586 collection: &CollectionHandle<T>,1587 recipient: &T::CrossAccountId,1588 ) -> DispatchResult {1589 let collection_id = collection.id;15901591 // check token limit and account token limit1592 collection.consume_sload()?;1593 let account_items: u32 =1594 <AddressTokens<T>>::get(collection_id, recipient.as_sub()).len() as u32;1595 ensure!(1596 collection.limits.account_token_ownership_limit > account_items,1597 Error::<T>::AccountTokenLimitExceeded1598 );15991600 // preliminary transfer check1601 ensure!(collection.transfers_enabled, Error::<T>::TransferNotAllowed);16021603 Ok(())1604 }16051606 fn can_create_items_in_collection(1607 collection: &CollectionHandle<T>,1608 sender: &T::CrossAccountId,1609 owner: &T::CrossAccountId,1610 amount: u32,1611 ) -> DispatchResult {1612 let collection_id = collection.id;16131614 // check token limit and account token limit1615 let total_items: u32 = ItemListIndex::get(collection_id)1616 .checked_add(amount)1617 .ok_or(Error::<T>::CollectionTokenLimitExceeded)?;1618 let account_items: u32 = (<AddressTokens<T>>::get(collection_id, owner.as_sub()).len()1619 as u32)1620 .checked_add(amount)1621 .ok_or(Error::<T>::AccountTokenLimitExceeded)?;1622 ensure!(1623 collection.limits.token_limit >= total_items,1624 Error::<T>::CollectionTokenLimitExceeded1625 );1626 ensure!(1627 collection.limits.account_token_ownership_limit >= account_items,1628 Error::<T>::AccountTokenLimitExceeded1629 );16301631 if !Self::is_owner_or_admin_permissions(collection, sender)? {1632 ensure!(collection.mint_mode, Error::<T>::PublicMintingNotAllowed);1633 Self::check_white_list(collection, owner)?;1634 Self::check_white_list(collection, sender)?;1635 }16361637 Ok(())1638 }16391640 fn validate_create_item_args(1641 target_collection: &CollectionHandle<T>,1642 data: &CreateItemData,1643 ) -> DispatchResult {1644 match target_collection.mode {1645 CollectionMode::NFT => {1646 if !matches!(data, CreateItemData::NFT(_)) {1647 fail!(Error::<T>::NotNftDataUsedToMintNftCollectionToken);1648 }1649 }1650 CollectionMode::Fungible(_) => {1651 if !matches!(data, CreateItemData::Fungible(_)) {1652 fail!(Error::<T>::NotFungibleDataUsedToMintFungibleCollectionToken);1653 }1654 }1655 CollectionMode::ReFungible => {1656 if let CreateItemData::ReFungible(data) = data {1657 // Check refungibility limits1658 ensure!(1659 data.pieces <= MAX_REFUNGIBLE_PIECES,1660 Error::<T>::WrongRefungiblePieces1661 );1662 ensure!(data.pieces > 0, Error::<T>::WrongRefungiblePieces);1663 } else {1664 fail!(Error::<T>::NotReFungibleDataUsedToMintReFungibleCollectionToken);1665 }1666 }1667 _ => {1668 fail!(Error::<T>::UnexpectedCollectionType);1669 }1670 };16711672 Ok(())1673 }16741675 fn create_item_no_validation(1676 collection: &CollectionHandle<T>,1677 owner: &T::CrossAccountId,1678 data: CreateItemData,1679 ) -> DispatchResult {1680 match data {1681 CreateItemData::NFT(data) => {1682 let item = NftItemType {1683 owner: owner.clone(),1684 const_data: data.const_data.into_inner(),1685 variable_data: data.variable_data.into_inner(),1686 };16871688 Self::add_nft_item(collection, item)?;1689 }1690 CreateItemData::Fungible(data) => {1691 Self::add_fungible_item(collection, owner, data.value)?;1692 }1693 CreateItemData::ReFungible(data) => {1694 let owner_list = vec![Ownership {1695 owner: owner.clone(),1696 fraction: data.pieces,1697 }];16981699 let item = ReFungibleItemType {1700 owner: owner_list,1701 const_data: data.const_data.into_inner(),1702 variable_data: data.variable_data.into_inner(),1703 };17041705 Self::add_refungible_item(collection, item)?;1706 }1707 };17081709 Ok(())1710 }17111712 fn add_fungible_item(1713 collection: &CollectionHandle<T>,1714 owner: &T::CrossAccountId,1715 value: u128,1716 ) -> DispatchResult {1717 let collection_id = collection.id;17181719 // Does new owner already have an account?1720 collection.consume_sload()?;1721 let balance: u128 = <FungibleItemList<T>>::get(collection_id, owner.as_sub()).value;17221723 // Mint1724 let item = FungibleItemType {1725 value: balance.checked_add(value).ok_or(Error::<T>::NumOverflow)?,1726 };1727 collection.consume_sstore()?;1728 <FungibleItemList<T>>::insert(collection_id, owner.as_sub(), item);17291730 // Update balance1731 collection.consume_sload()?;1732 let new_balance = <Balance<T>>::get(collection_id, owner.as_sub())1733 .checked_add(value)1734 .ok_or(Error::<T>::NumOverflow)?;1735 collection.consume_sstore()?;1736 <Balance<T>>::insert(collection_id, owner.as_sub(), new_balance);17371738 collection.log(ERC20Events::Transfer {1739 from: H160::default(),1740 to: *owner.as_eth(),1741 value: value.into(),1742 })?;1743 Self::deposit_event(RawEvent::ItemCreated(collection_id, 0, owner.clone()));1744 Ok(())1745 }17461747 fn add_refungible_item(1748 collection: &CollectionHandle<T>,1749 item: ReFungibleItemType<T::CrossAccountId>,1750 ) -> DispatchResult {1751 let collection_id = collection.id;17521753 let current_index = <ItemListIndex>::get(collection_id)1754 .checked_add(1)1755 .ok_or(Error::<T>::NumOverflow)?;1756 let itemcopy = item.clone();17571758 ensure!(item.owner.len() == 1, Error::<T>::BadCreateRefungibleCall,);1759 let item_owner = item.owner.first().expect("only one owner is defined");17601761 let value = item_owner.fraction;1762 let owner = item_owner.owner.clone();17631764 Self::add_token_index(collection, current_index, &owner)?;17651766 <ItemListIndex>::insert(collection_id, current_index);1767 <ReFungibleItemList<T>>::insert(collection_id, current_index, itemcopy);17681769 // Update balance1770 let new_balance = <Balance<T>>::get(collection_id, owner.as_sub())1771 .checked_add(value)1772 .ok_or(Error::<T>::NumOverflow)?;1773 <Balance<T>>::insert(collection_id, owner.as_sub(), new_balance);17741775 Self::deposit_event(RawEvent::ItemCreated(collection_id, current_index, owner));1776 Ok(())1777 }17781779 fn add_nft_item(1780 collection: &CollectionHandle<T>,1781 item: NftItemType<T::CrossAccountId>,1782 ) -> DispatchResult {1783 let collection_id = collection.id;17841785 let current_index = <ItemListIndex>::get(collection_id)1786 .checked_add(1)1787 .ok_or(Error::<T>::NumOverflow)?;17881789 let item_owner = item.owner.clone();1790 Self::add_token_index(collection, current_index, &item.owner)?;17911792 <ItemListIndex>::insert(collection_id, current_index);1793 <NftItemList<T>>::insert(collection_id, current_index, item);17941795 // Update balance1796 let new_balance = <Balance<T>>::get(collection_id, item_owner.as_sub())1797 .checked_add(1)1798 .ok_or(Error::<T>::NumOverflow)?;1799 <Balance<T>>::insert(collection_id, item_owner.as_sub(), new_balance);18001801 collection.log(ERC721Events::Transfer {1802 from: H160::default(),1803 to: *item_owner.as_eth(),1804 token_id: current_index.into(),1805 })?;1806 Self::deposit_event(RawEvent::ItemCreated(1807 collection_id,1808 current_index,1809 item_owner,1810 ));1811 Ok(())1812 }18131814 fn burn_refungible_item(1815 collection: &CollectionHandle<T>,1816 item_id: TokenId,1817 owner: &T::CrossAccountId,1818 ) -> DispatchResult {1819 let collection_id = collection.id;18201821 let mut token = <ReFungibleItemList<T>>::get(collection_id, item_id)1822 .ok_or(Error::<T>::TokenNotFound)?;1823 let rft_balance = token1824 .owner1825 .iter()1826 .find(|&i| i.owner == *owner)1827 .ok_or(Error::<T>::TokenNotFound)?;1828 Self::remove_token_index(collection, item_id, owner)?;18291830 // update balance1831 let new_balance = <Balance<T>>::get(collection_id, rft_balance.owner.as_sub())1832 .checked_sub(rft_balance.fraction)1833 .ok_or(Error::<T>::NumOverflow)?;1834 <Balance<T>>::insert(collection_id, rft_balance.owner.as_sub(), new_balance);18351836 // Re-create owners list with sender removed1837 let index = token1838 .owner1839 .iter()1840 .position(|i| i.owner == *owner)1841 .expect("owned item is exists");1842 token.owner.remove(index);1843 let owner_count = token.owner.len();18441845 // Burn the token completely if this was the last (only) owner1846 if owner_count == 0 {1847 <ReFungibleItemList<T>>::remove(collection_id, item_id);1848 <VariableMetaDataBasket<T>>::remove(collection_id, item_id);1849 } else {1850 <ReFungibleItemList<T>>::insert(collection_id, item_id, token);1851 }18521853 Ok(())1854 }18551856 fn burn_nft_item(collection: &CollectionHandle<T>, item_id: TokenId) -> DispatchResult {1857 let collection_id = collection.id;18581859 let item =1860 <NftItemList<T>>::get(collection_id, item_id).ok_or(Error::<T>::TokenNotFound)?;1861 Self::remove_token_index(collection, item_id, &item.owner)?;18621863 // update balance1864 let new_balance = <Balance<T>>::get(collection_id, item.owner.as_sub())1865 .checked_sub(1)1866 .ok_or(Error::<T>::NumOverflow)?;1867 <Balance<T>>::insert(collection_id, item.owner.as_sub(), new_balance);1868 <NftItemList<T>>::remove(collection_id, item_id);1869 <VariableMetaDataBasket<T>>::remove(collection_id, item_id);18701871 collection.log(ERC721Events::Transfer {1872 from: *item.owner.as_eth(),1873 to: H160::default(),1874 token_id: item_id.into(),1875 })?;1876 Self::deposit_event(RawEvent::ItemDestroyed(collection.id, item_id));1877 Ok(())1878 }18791880 fn burn_fungible_item(1881 owner: &T::CrossAccountId,1882 collection: &CollectionHandle<T>,1883 value: u128,1884 ) -> DispatchResult {1885 let collection_id = collection.id;18861887 let mut balance = <FungibleItemList<T>>::get(collection_id, owner.as_sub());1888 ensure!(balance.value >= value, Error::<T>::TokenValueNotEnough);18891890 // update balance1891 let new_balance = <Balance<T>>::get(collection_id, owner.as_sub())1892 .checked_sub(value)1893 .ok_or(Error::<T>::NumOverflow)?;1894 <Balance<T>>::insert(collection_id, owner.as_sub(), new_balance);18951896 if balance.value - value > 0 {1897 balance.value -= value;1898 <FungibleItemList<T>>::insert(collection_id, owner.as_sub(), balance);1899 } else {1900 <FungibleItemList<T>>::remove(collection_id, owner.as_sub());1901 }19021903 collection.log(ERC20Events::Transfer {1904 from: *owner.as_eth(),1905 to: H160::default(),1906 value: value.into(),1907 })?;1908 Ok(())1909 }19101911 pub fn get_collection(1912 collection_id: CollectionId,1913 ) -> Result<CollectionHandle<T>, sp_runtime::DispatchError> {1914 Ok(<CollectionHandle<T>>::get(collection_id).ok_or(Error::<T>::CollectionNotFound)?)1915 }19161917 fn check_owner_permissions(1918 target_collection: &CollectionHandle<T>,1919 subject: &T::AccountId,1920 ) -> DispatchResult {1921 ensure!(1922 *subject == target_collection.owner,1923 Error::<T>::NoPermission1924 );19251926 Ok(())1927 }19281929 fn is_owner_or_admin_permissions(1930 collection: &CollectionHandle<T>,1931 subject: &T::CrossAccountId,1932 ) -> Result<bool, DispatchError> {1933 collection.consume_sload()?;1934 Ok(*subject.as_sub() == collection.owner1935 || <AdminList<T>>::get(collection.id).contains(subject))1936 }19371938 fn check_owner_or_admin_permissions(1939 collection: &CollectionHandle<T>,1940 subject: &T::CrossAccountId,1941 ) -> DispatchResult {1942 ensure!(1943 Self::is_owner_or_admin_permissions(collection, subject)?,1944 Error::<T>::NoPermission1945 );19461947 Ok(())1948 }19491950 fn owned_amount(1951 subject: &T::CrossAccountId,1952 collection: &CollectionHandle<T>,1953 item_id: TokenId,1954 ) -> Result<Option<u128>, DispatchError> {1955 collection.consume_sload()?;1956 Ok(Self::owned_amount_unchecked(subject, collection, item_id))1957 }19581959 fn owned_amount_unchecked(1960 subject: &T::CrossAccountId,1961 target_collection: &CollectionHandle<T>,1962 item_id: TokenId,1963 ) -> Option<u128> {1964 let collection_id = target_collection.id;19651966 match target_collection.mode {1967 CollectionMode::NFT => {1968 (<NftItemList<T>>::get(collection_id, item_id)?.owner == *subject).then(|| 1)1969 }1970 CollectionMode::Fungible(_) => {1971 Some(<FungibleItemList<T>>::get(collection_id, &subject.as_sub()).value)1972 }1973 CollectionMode::ReFungible => <ReFungibleItemList<T>>::get(collection_id, item_id)?1974 .owner1975 .iter()1976 .find(|i| i.owner == *subject)1977 .map(|i| i.fraction),1978 CollectionMode::Invalid => None,1979 }1980 }19811982 fn is_item_owner(1983 subject: &T::CrossAccountId,1984 target_collection: &CollectionHandle<T>,1985 item_id: TokenId,1986 ) -> Result<bool, DispatchError> {1987 Ok(match target_collection.mode {1988 CollectionMode::Fungible(_) => true,1989 _ => Self::owned_amount(subject, target_collection, item_id)?.is_some(),1990 })1991 }19921993 fn check_white_list(1994 collection: &CollectionHandle<T>,1995 address: &T::CrossAccountId,1996 ) -> DispatchResult {1997 collection.consume_sload()?;1998 ensure!(1999 <WhiteList<T>>::contains_key(collection.id, address.as_sub()),2000 Error::<T>::AddresNotInWhiteList,2001 );2002 Ok(())2003 }20042005 /// Check if token exists. In case of Fungible, check if there is an entry for2006 /// the owner in fungible balances double map2007 fn token_exists(target_collection: &CollectionHandle<T>, item_id: TokenId) -> DispatchResult {2008 let collection_id = target_collection.id;2009 let exists = match target_collection.mode {2010 CollectionMode::NFT => <NftItemList<T>>::contains_key(collection_id, item_id),2011 CollectionMode::Fungible(_) => true,2012 CollectionMode::ReFungible => {2013 <ReFungibleItemList<T>>::contains_key(collection_id, item_id)2014 }2015 _ => false,2016 };20172018 ensure!(exists, Error::<T>::TokenNotFound);2019 Ok(())2020 }20212022 fn transfer_fungible(2023 collection: &CollectionHandle<T>,2024 value: u128,2025 owner: &T::CrossAccountId,2026 recipient: &T::CrossAccountId,2027 ) -> DispatchResult {2028 let collection_id = collection.id;20292030 collection.consume_sload()?;2031 collection.consume_sload()?;2032 let mut recipient_balance = <FungibleItemList<T>>::get(collection_id, recipient.as_sub());2033 let mut balance = <FungibleItemList<T>>::get(collection_id, owner.as_sub());20342035 recipient_balance.value = recipient_balance2036 .value2037 .checked_add(value)2038 .ok_or(Error::<T>::NumOverflow)?;2039 balance.value = balance2040 .value2041 .checked_sub(value)2042 .ok_or(Error::<T>::TokenValueTooLow)?;20432044 // update balanceOf2045 collection.consume_sstore()?;2046 collection.consume_sstore()?;2047 if balance.value != 0 {2048 <Balance<T>>::insert(collection_id, owner.as_sub(), balance.value);2049 } else {2050 <Balance<T>>::remove(collection_id, owner.as_sub());2051 }2052 <Balance<T>>::insert(collection_id, recipient.as_sub(), recipient_balance.value);20532054 // Reduce or remove sender2055 collection.consume_sstore()?;2056 collection.consume_sstore()?;2057 if balance.value != 0 {2058 <FungibleItemList<T>>::insert(collection_id, owner.as_sub(), balance);2059 } else {2060 <FungibleItemList<T>>::remove(collection_id, owner.as_sub());2061 }2062 <FungibleItemList<T>>::insert(collection_id, recipient.as_sub(), recipient_balance);20632064 collection.log(ERC20Events::Transfer {2065 from: *owner.as_eth(),2066 to: *recipient.as_eth(),2067 value: value.into(),2068 })?;2069 Self::deposit_event(RawEvent::Transfer(2070 collection.id,2071 1,2072 owner.clone(),2073 recipient.clone(),2074 value,2075 ));20762077 Ok(())2078 }20792080 fn transfer_refungible(2081 collection: &CollectionHandle<T>,2082 item_id: TokenId,2083 value: u128,2084 owner: T::CrossAccountId,2085 new_owner: T::CrossAccountId,2086 ) -> DispatchResult {2087 let collection_id = collection.id;2088 collection.consume_sload()?;2089 let full_item = <ReFungibleItemList<T>>::get(collection_id, item_id)2090 .ok_or(Error::<T>::TokenNotFound)?;20912092 let item = full_item2093 .owner2094 .iter()2095 .find(|i| i.owner == owner)2096 .ok_or(Error::<T>::TokenNotFound)?;2097 let amount = item.fraction;20982099 ensure!(amount >= value, Error::<T>::TokenValueTooLow);21002101 collection.consume_sload()?;2102 // update balance2103 let balance_old_owner = <Balance<T>>::get(collection_id, item.owner.as_sub())2104 .checked_sub(value)2105 .ok_or(Error::<T>::NumOverflow)?;2106 collection.consume_sstore()?;2107 <Balance<T>>::insert(collection_id, item.owner.as_sub(), balance_old_owner);21082109 collection.consume_sload()?;2110 let balance_new_owner = <Balance<T>>::get(collection_id, new_owner.as_sub())2111 .checked_add(value)2112 .ok_or(Error::<T>::NumOverflow)?;2113 collection.consume_sstore()?;2114 <Balance<T>>::insert(collection_id, new_owner.as_sub(), balance_new_owner);21152116 let old_owner = item.owner.clone();2117 let new_owner_has_account = full_item.owner.iter().any(|i| i.owner == new_owner);21182119 let mut new_full_item = full_item.clone();2120 // transfer2121 if amount == value && !new_owner_has_account {2122 // change owner2123 // new owner do not have account2124 new_full_item2125 .owner2126 .iter_mut()2127 .find(|i| i.owner == owner)2128 .expect("old owner does present in refungible")2129 .owner = new_owner.clone();2130 collection.consume_sstore()?;2131 <ReFungibleItemList<T>>::insert(collection_id, item_id, new_full_item);21322133 // update index collection2134 Self::move_token_index(collection, item_id, &old_owner, &new_owner)?;2135 } else {2136 new_full_item2137 .owner2138 .iter_mut()2139 .find(|i| i.owner == owner)2140 .expect("old owner does present in refungible")2141 .fraction -= value;21422143 // separate amount2144 if new_owner_has_account {2145 // new owner has account2146 new_full_item2147 .owner2148 .iter_mut()2149 .find(|i| i.owner == new_owner)2150 .expect("new owner has account")2151 .fraction += value;2152 } else {2153 // new owner do not have account2154 new_full_item.owner.push(Ownership {2155 owner: new_owner.clone(),2156 fraction: value,2157 });2158 Self::add_token_index(collection, item_id, &new_owner)?;2159 }21602161 collection.consume_sstore()?;2162 <ReFungibleItemList<T>>::insert(collection_id, item_id, new_full_item);2163 }21642165 Self::deposit_event(RawEvent::Transfer(2166 collection.id,2167 item_id,2168 owner,2169 new_owner,2170 amount,2171 ));21722173 Ok(())2174 }21752176 fn transfer_nft(2177 collection: &CollectionHandle<T>,2178 item_id: TokenId,2179 sender: T::CrossAccountId,2180 new_owner: T::CrossAccountId,2181 ) -> DispatchResult {2182 let collection_id = collection.id;2183 collection.consume_sload()?;2184 let mut item =2185 <NftItemList<T>>::get(collection_id, item_id).ok_or(Error::<T>::TokenNotFound)?;21862187 ensure!(sender == item.owner, Error::<T>::MustBeTokenOwner);21882189 collection.consume_sload()?;2190 // update balance2191 let balance_old_owner = <Balance<T>>::get(collection_id, item.owner.as_sub())2192 .checked_sub(1)2193 .ok_or(Error::<T>::NumOverflow)?;2194 collection.consume_sstore()?;2195 <Balance<T>>::insert(collection_id, item.owner.as_sub(), balance_old_owner);21962197 collection.consume_sload()?;2198 let balance_new_owner = <Balance<T>>::get(collection_id, new_owner.as_sub())2199 .checked_add(1)2200 .ok_or(Error::<T>::NumOverflow)?;2201 collection.consume_sstore()?;2202 <Balance<T>>::insert(collection_id, new_owner.as_sub(), balance_new_owner);22032204 // change owner2205 let old_owner = item.owner.clone();2206 item.owner = new_owner.clone();2207 collection.consume_sstore()?;2208 <NftItemList<T>>::insert(collection_id, item_id, item);22092210 // update index collection2211 Self::move_token_index(collection, item_id, &old_owner, &new_owner)?;22122213 collection.log(ERC721Events::Transfer {2214 from: *sender.as_eth(),2215 to: *new_owner.as_eth(),2216 token_id: item_id.into(),2217 })?;2218 Self::deposit_event(RawEvent::Transfer(2219 collection.id,2220 item_id,2221 sender,2222 new_owner,2223 1,2224 ));22252226 Ok(())2227 }22282229 fn set_re_fungible_variable_data(2230 collection: &CollectionHandle<T>,2231 item_id: TokenId,2232 data: Vec<u8>,2233 ) -> DispatchResult {2234 let collection_id = collection.id;2235 let mut item = <ReFungibleItemList<T>>::get(collection_id, item_id)2236 .ok_or(Error::<T>::TokenNotFound)?;22372238 item.variable_data = data;22392240 <ReFungibleItemList<T>>::insert(collection_id, item_id, item);22412242 Ok(())2243 }22442245 fn set_nft_variable_data(2246 collection: &CollectionHandle<T>,2247 item_id: TokenId,2248 data: Vec<u8>,2249 ) -> DispatchResult {2250 let collection_id = collection.id;2251 let mut item =2252 <NftItemList<T>>::get(collection_id, item_id).ok_or(Error::<T>::TokenNotFound)?;22532254 item.variable_data = data;22552256 <NftItemList<T>>::insert(collection_id, item_id, item);22572258 Ok(())2259 }22602261 #[allow(dead_code)]2262 fn init_collection(item: &Collection<T>) {2263 // check params2264 assert!(2265 item.decimal_points <= MAX_DECIMAL_POINTS,2266 "decimal_points parameter must be lower than MAX_DECIMAL_POINTS"2267 );2268 assert!(2269 item.name.len() <= 64,2270 "Collection name can not be longer than 63 char"2271 );2272 assert!(2273 item.name.len() <= 256,2274 "Collection description can not be longer than 255 char"2275 );2276 assert!(2277 item.token_prefix.len() <= 16,2278 "Token prefix can not be longer than 15 char"2279 );22802281 // Generate next collection ID2282 let next_id = CreatedCollectionCount::get().checked_add(1).unwrap();22832284 CreatedCollectionCount::put(next_id);2285 }22862287 #[allow(dead_code)]2288 fn init_nft_token(collection_id: CollectionId, item: &NftItemType<T::CrossAccountId>) {2289 let current_index = <ItemListIndex>::get(collection_id).checked_add(1).unwrap();22902291 Self::add_token_index(2292 &CollectionHandle::get(collection_id).unwrap(),2293 current_index,2294 &item.owner,2295 )2296 .unwrap();22972298 <ItemListIndex>::insert(collection_id, current_index);22992300 // Update balance2301 let new_balance = <Balance<T>>::get(collection_id, item.owner.as_sub())2302 .checked_add(1)2303 .unwrap();2304 <Balance<T>>::insert(collection_id, item.owner.as_sub(), new_balance);2305 }23062307 #[allow(dead_code)]2308 fn init_fungible_token(2309 collection_id: CollectionId,2310 owner: &T::CrossAccountId,2311 item: &FungibleItemType,2312 ) {2313 let current_index = <ItemListIndex>::get(collection_id).checked_add(1).unwrap();23142315 Self::add_token_index(2316 &CollectionHandle::get(collection_id).unwrap(),2317 current_index,2318 owner,2319 )2320 .unwrap();23212322 <ItemListIndex>::insert(collection_id, current_index);23232324 // Update balance2325 let new_balance = <Balance<T>>::get(collection_id, owner.as_sub())2326 .checked_add(item.value)2327 .unwrap();2328 <Balance<T>>::insert(collection_id, owner.as_sub(), new_balance);2329 }23302331 #[allow(dead_code)]2332 fn init_refungible_token(2333 collection_id: CollectionId,2334 item: &ReFungibleItemType<T::CrossAccountId>,2335 ) {2336 let current_index = <ItemListIndex>::get(collection_id).checked_add(1).unwrap();23372338 let value = item.owner.first().unwrap().fraction;2339 let owner = item.owner.first().unwrap().owner.clone();23402341 Self::add_token_index(2342 &CollectionHandle::get(collection_id).unwrap(),2343 current_index,2344 &owner,2345 )2346 .unwrap();23472348 <ItemListIndex>::insert(collection_id, current_index);23492350 // Update balance2351 let new_balance = <Balance<T>>::get(collection_id, &owner.as_sub())2352 .checked_add(value)2353 .unwrap();2354 <Balance<T>>::insert(collection_id, owner.as_sub(), new_balance);2355 }23562357 fn add_token_index(2358 collection: &CollectionHandle<T>,2359 item_index: TokenId,2360 owner: &T::CrossAccountId,2361 ) -> DispatchResult {2362 // add to account limit2363 collection.consume_sload()?;2364 if <AccountItemCount<T>>::contains_key(owner.as_sub()) {2365 // bound Owned tokens by a single address2366 collection.consume_sload()?;2367 let count = <AccountItemCount<T>>::get(owner.as_sub());2368 ensure!(2369 count < ACCOUNT_TOKEN_OWNERSHIP_LIMIT,2370 Error::<T>::AddressOwnershipLimitExceeded2371 );23722373 collection.consume_sstore()?;2374 <AccountItemCount<T>>::insert(2375 owner.as_sub(),2376 count.checked_add(1).ok_or(Error::<T>::NumOverflow)?,2377 );2378 } else {2379 collection.consume_sstore()?;2380 <AccountItemCount<T>>::insert(owner.as_sub(), 1);2381 }23822383 collection.consume_sload()?;2384 let list_exists = <AddressTokens<T>>::contains_key(collection.id, owner.as_sub());2385 if list_exists {2386 collection.consume_sload()?;2387 let mut list = <AddressTokens<T>>::get(collection.id, owner.as_sub());2388 let item_contains = list.contains(&item_index.clone());23892390 if !item_contains {2391 list.push(item_index);2392 }23932394 collection.consume_sstore()?;2395 <AddressTokens<T>>::insert(collection.id, owner.as_sub(), list);2396 } else {2397 let itm = vec![item_index];2398 collection.consume_sstore()?;2399 <AddressTokens<T>>::insert(collection.id, owner.as_sub(), itm);2400 }24012402 Ok(())2403 }24042405 fn remove_token_index(2406 collection: &CollectionHandle<T>,2407 item_index: TokenId,2408 owner: &T::CrossAccountId,2409 ) -> DispatchResult {2410 // update counter2411 collection.consume_sload()?;2412 collection.consume_sstore()?;2413 <AccountItemCount<T>>::insert(2414 owner.as_sub(),2415 <AccountItemCount<T>>::get(owner.as_sub())2416 .checked_sub(1)2417 .ok_or(Error::<T>::NumOverflow)?,2418 );24192420 collection.consume_sload()?;2421 let list_exists = <AddressTokens<T>>::contains_key(collection.id, owner.as_sub());2422 if list_exists {2423 collection.consume_sload()?;2424 let mut list = <AddressTokens<T>>::get(collection.id, owner.as_sub());2425 let item_contains = list.contains(&item_index.clone());24262427 if item_contains {2428 list.retain(|&item| item != item_index);2429 collection.consume_sstore()?;2430 <AddressTokens<T>>::insert(collection.id, owner.as_sub(), list);2431 }2432 }24332434 Ok(())2435 }24362437 fn move_token_index(2438 collection: &CollectionHandle<T>,2439 item_index: TokenId,2440 old_owner: &T::CrossAccountId,2441 new_owner: &T::CrossAccountId,2442 ) -> DispatchResult {2443 Self::remove_token_index(collection, item_index, old_owner)?;2444 Self::add_token_index(collection, item_index, new_owner)?;24452446 Ok(())2447 }2448}24492450sp_api::decl_runtime_apis! {2451 pub trait NftApi {2452 /// Used for ethereum integration2453 fn eth_contract_code(account: H160) -> Option<Vec<u8>>;2454 }2455}1//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"]7#![cfg_attr(not(feature = "std"), no_std)]8#![allow(9 clippy::too_many_arguments,10 clippy::unnecessary_mut_passed,11 clippy::unused_unit12)]1314extern crate alloc;1516pub use serde::{Serialize, Deserialize};1718pub 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, transactional,32};3334use frame_system::{self as system, ensure_signed};35use sp_core::H160;36use sp_std::vec;37use sp_runtime::{DispatchError, sp_std::prelude::Vec};38use core::ops::{Deref, DerefMut};39use nft_data_structs::{40 MAX_DECIMAL_POINTS, MAX_SPONSOR_TIMEOUT, MAX_TOKEN_OWNERSHIP, MAX_REFUNGIBLE_PIECES,41 CUSTOM_DATA_LIMIT, COLLECTION_NUMBER_LIMIT, ACCOUNT_TOKEN_OWNERSHIP_LIMIT,42 VARIABLE_ON_CHAIN_SCHEMA_LIMIT, CONST_ON_CHAIN_SCHEMA_LIMIT, COLLECTION_ADMINS_LIMIT,43 OFFCHAIN_SCHEMA_LIMIT, MAX_TOKEN_PREFIX_LENGTH, MAX_COLLECTION_NAME_LENGTH,44 MAX_COLLECTION_DESCRIPTION_LENGTH, AccessMode, Collection, CreateItemData, CollectionLimits,45 CollectionId, CollectionMode, TokenId, SchemaVersion, SponsorshipState, Ownership, NftItemType,46 FungibleItemType, ReFungibleItemType,47};4849#[cfg(test)]50mod mock;5152#[cfg(test)]53mod tests;5455mod eth;56mod sponsorship;57pub use sponsorship::NftSponsorshipHandler;58pub use eth::sponsoring::NftEthSponsorshipHandler;5960pub use eth::NftErcSupport;61pub use eth::account::*;62use eth::erc::{ERC20Events, ERC721Events};6364#[cfg(feature = "runtime-benchmarks")]65mod benchmarking;66pub mod weights;67use weights::WeightInfo;6869decl_error! {70 /// Error for non-fungible-token module.71 pub enum Error for Module<T: Config> {72 /// Total collections bound exceeded.73 TotalCollectionsLimitExceeded,74 /// Decimal_points parameter must be lower than MAX_DECIMAL_POINTS constant, currently it is 30.75 CollectionDecimalPointLimitExceeded,76 /// Collection name can not be longer than 63 char.77 CollectionNameLimitExceeded,78 /// Collection description can not be longer than 255 char.79 CollectionDescriptionLimitExceeded,80 /// Token prefix can not be longer than 15 char.81 CollectionTokenPrefixLimitExceeded,82 /// This collection does not exist.83 CollectionNotFound,84 /// Item not exists.85 TokenNotFound,86 /// Admin not found87 AdminNotFound,88 /// Arithmetic calculation overflow.89 NumOverflow,90 /// Account already has admin role.91 AlreadyAdmin,92 /// You do not own this collection.93 NoPermission,94 /// This address is not set as sponsor, use setCollectionSponsor first.95 ConfirmUnsetSponsorFail,96 /// Collection is not in mint mode.97 PublicMintingNotAllowed,98 /// Sender parameter and item owner must be equal.99 MustBeTokenOwner,100 /// Item balance not enough.101 TokenValueTooLow,102 /// Size of item is too large.103 NftSizeLimitExceeded,104 /// No approve found105 ApproveNotFound,106 /// Requested value more than approved.107 TokenValueNotEnough,108 /// Only approved addresses can call this method.109 ApproveRequired,110 /// Address is not in white list.111 AddresNotInWhiteList,112 /// Number of collection admins bound exceeded.113 CollectionAdminsLimitExceeded,114 /// Owned tokens by a single address bound exceeded.115 AddressOwnershipLimitExceeded,116 /// Length of items properties must be greater than 0.117 EmptyArgument,118 /// const_data exceeded data limit.119 TokenConstDataLimitExceeded,120 /// variable_data exceeded data limit.121 TokenVariableDataLimitExceeded,122 /// Not NFT item data used to mint in NFT collection.123 NotNftDataUsedToMintNftCollectionToken,124 /// Not Fungible item data used to mint in Fungible collection.125 NotFungibleDataUsedToMintFungibleCollectionToken,126 /// Not Re Fungible item data used to mint in Re Fungible collection.127 NotReFungibleDataUsedToMintReFungibleCollectionToken,128 /// Unexpected collection type.129 UnexpectedCollectionType,130 /// Can't store metadata in fungible tokens.131 CantStoreMetadataInFungibleTokens,132 /// Collection token limit exceeded133 CollectionTokenLimitExceeded,134 /// Account token limit exceeded per collection135 AccountTokenLimitExceeded,136 /// Collection limit bounds per collection exceeded137 CollectionLimitBoundsExceeded,138 /// Tried to enable permissions which are only permitted to be disabled139 OwnerPermissionsCantBeReverted,140 /// Schema data size limit bound exceeded141 SchemaDataLimitExceeded,142 /// Maximum refungibility exceeded143 WrongRefungiblePieces,144 /// createRefungible should be called with one owner145 BadCreateRefungibleCall,146 /// Gas limit exceeded147 OutOfGas,148 /// Collection settings not allowing items transferring149 TransferNotAllowed,150 /// Can't transfer tokens to ethereum zero address151 AddressIsZero,152 }153}154155#[must_use = "Should call submit_logs or save, otherwise some data will be lost for evm side"]156pub struct CollectionHandle<T: Config> {157 pub id: CollectionId,158 collection: Collection<T>,159 recorder: pallet_evm_coder_substrate::SubstrateRecorder<T>,160}161impl<T: Config> CollectionHandle<T> {162 pub fn get_with_gas_limit(id: CollectionId, gas_limit: u64) -> Option<Self> {163 <CollectionById<T>>::get(id).map(|collection| Self {164 id,165 collection,166 recorder: pallet_evm_coder_substrate::SubstrateRecorder::new(167 eth::collection_id_to_address(id),168 gas_limit,169 ),170 })171 }172 pub fn get(id: CollectionId) -> Option<Self> {173 Self::get_with_gas_limit(id, u64::MAX)174 }175 pub fn log(&self, log: impl evm_coder::ToLog) -> DispatchResult {176 self.recorder.log_sub(log)177 }178 #[allow(dead_code)]179 fn consume_gas(&self, gas: u64) -> DispatchResult {180 self.recorder.consume_gas_sub(gas)181 }182 fn consume_sload(&self) -> DispatchResult {183 self.recorder.consume_sload_sub()184 }185 fn consume_sstore(&self) -> DispatchResult {186 self.recorder.consume_sstore_sub()187 }188 pub fn submit_logs(self) -> DispatchResult {189 self.recorder.submit_logs()190 }191 pub fn save(self) -> DispatchResult {192 self.recorder.submit_logs()?;193 <CollectionById<T>>::insert(self.id, self.collection);194 Ok(())195 }196}197impl<T: Config> Deref for CollectionHandle<T> {198 type Target = Collection<T>;199200 fn deref(&self) -> &Self::Target {201 &self.collection202 }203}204205impl<T: Config> DerefMut for CollectionHandle<T> {206 fn deref_mut(&mut self) -> &mut Self::Target {207 &mut self.collection208 }209}210211pub trait Config: system::Config + pallet_evm_coder_substrate::Config + Sized {212 type Event: From<Event<Self>> + Into<<Self as system::Config>::Event>;213214 /// Weight information for extrinsics in this pallet.215 type WeightInfo: WeightInfo;216217 type EvmAddressMapping: pallet_evm::AddressMapping<Self::AccountId>;218 type EvmBackwardsAddressMapping: EvmBackwardsAddressMapping<Self::AccountId>;219220 type CrossAccountId: CrossAccountId<Self::AccountId>;221 type Currency: Currency<Self::AccountId>;222 type CollectionCreationPrice: Get<223 <<Self as Config>::Currency as Currency<Self::AccountId>>::Balance,224 >;225 type TreasuryAccountId: Get<Self::AccountId>;226}227228type SelfWeightOf<T> = <T as Config>::WeightInfo;229230trait WeightInfoHelpers: WeightInfo {231 fn transfer() -> Weight {232 Self::transfer_nft()233 .max(Self::transfer_fungible())234 .max(Self::transfer_refungible())235 }236 fn transfer_from() -> Weight {237 Self::transfer_from_nft()238 .max(Self::transfer_from_fungible())239 .max(Self::transfer_from_refungible())240 }241 fn approve() -> Weight {242 // TODO: refungible, fungible243 Self::approve_nft()244 }245 fn set_variable_meta_data(data: u32) -> Weight {246 // TODO: refungible247 Self::set_variable_meta_data_nft(data)248 }249 fn create_item(data: u32) -> Weight {250 Self::create_item_nft(data)251 .max(Self::create_item_fungible())252 .max(Self::create_item_refungible(data))253 }254 fn create_multiple_items(amount: u32) -> Weight {255 Self::create_multiple_items_nft(amount)256 .max(Self::create_multiple_items_fungible(amount))257 .max(Self::create_multiple_items_refungible(amount))258 }259 fn burn_item() -> Weight {260 // TODO: refungible, fungible261 Self::burn_item_nft()262 }263}264impl<T: WeightInfo> WeightInfoHelpers for T {}265266// # Used definitions267//268// ## User control levels269//270// chain-controlled - key is uncontrolled by user271// i.e autoincrementing index272// can use non-cryptographic hash273// real - key is controlled by user274// but it is hard to generate enough colliding values, i.e owner of signed txs275// can use non-cryptographic hash276// controlled - key is completly controlled by users277// i.e maps with mutable keys278// should use cryptographic hash279//280// ## User control level downgrade reasons281//282// ?1 - chain-controlled -> controlled283// collections/tokens can be destroyed, resulting in massive holes284// ?2 - chain-controlled -> controlled285// same as ?1, but can be only added, resulting in easier exploitation286// ?3 - real -> controlled287// no confirmation required, so addresses can be easily generated288decl_storage! {289 trait Store for Module<T: Config> as Nft {290291 //#region Private members292 /// Id of next collection293 CreatedCollectionCount: u32;294 /// Used for migrations295 ChainVersion: u64;296 /// Id of last collection token297 /// Collection id (controlled?1)298 ItemListIndex: map hasher(blake2_128_concat) CollectionId => TokenId;299 //#endregion300301 //#region Bound counters302 /// Amount of collections destroyed, used for total amount tracking with303 /// CreatedCollectionCount304 DestroyedCollectionCount: u32;305 /// Total amount of account owned tokens (NFTs + RFTs + unique fungibles)306 /// Account id (real)307 pub AccountItemCount get(fn account_item_count): map hasher(twox_64_concat) T::AccountId => u32;308 //#endregion309310 //#region Basic collections311 /// Collection info312 /// Collection id (controlled?1)313 pub CollectionById get(fn collection_id) config(): map hasher(blake2_128_concat) CollectionId => Option<Collection<T>> = None;314 /// List of collection admins315 /// Collection id (controlled?2)316 pub AdminList get(fn admin_list_collection): map hasher(blake2_128_concat) CollectionId => Vec<T::CrossAccountId>;317 /// Whitelisted collection users318 /// Collection id (controlled?2), user id (controlled?3)319 pub WhiteList get(fn white_list): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) T::AccountId => bool;320 //#endregion321322 /// How many of collection items user have323 /// Collection id (controlled?2), account id (real)324 pub Balance get(fn balance_count): double_map hasher(blake2_128_concat) CollectionId, hasher(twox_64_concat) T::AccountId => u128;325326 /// Amount of items which spender can transfer out of owners account (via transferFrom)327 /// Collection id (controlled?2), (token id (controlled ?2) + owner account id (real) + spender account id (controlled?3))328 /// TODO: Off chain worker should remove from this map when token gets removed329 pub Allowances get(fn approved): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) (TokenId, T::AccountId, T::AccountId) => u128;330331 //#region Item collections332 /// Collection id (controlled?2), token id (controlled?1)333 pub NftItemList get(fn nft_item_id) config(): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<NftItemType<T::CrossAccountId>>;334 /// Collection id (controlled?2), owner (controlled?2)335 pub FungibleItemList get(fn fungible_item_id) config(): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) T::AccountId => FungibleItemType;336 /// Collection id (controlled?2), token id (controlled?1)337 pub ReFungibleItemList get(fn refungible_item_id) config(): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<ReFungibleItemType<T::CrossAccountId>>;338 //#endregion339340 //#region Index list341 /// Collection id (controlled?2), tokens owner (controlled?2)342 pub AddressTokens get(fn address_tokens): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) T::AccountId => Vec<TokenId>;343 //#endregion344345 //#region Tokens transfer rate limit baskets346 /// (Collection id (controlled?2), who created (real))347 /// TODO: Off chain worker should remove from this map when collection gets removed348 pub CreateItemBasket get(fn create_item_basket): map hasher(blake2_128_concat) (CollectionId, T::AccountId) => T::BlockNumber;349 /// Collection id (controlled?2), token id (controlled?2)350 pub NftTransferBasket get(fn nft_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => T::BlockNumber;351 /// Collection id (controlled?2), owning user (real)352 pub FungibleTransferBasket get(fn fungible_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(twox_64_concat) T::AccountId => T::BlockNumber;353 /// Collection id (controlled?2), token id (controlled?2)354 pub ReFungibleTransferBasket get(fn refungible_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => T::BlockNumber;355 //#endregion356357 /// Variable metadata sponsoring358 /// Collection id (controlled?2), token id (controlled?2)359 pub VariableMetaDataBasket get(fn variable_meta_data_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<T::BlockNumber> = None;360 }361 add_extra_genesis {362 build(|config: &GenesisConfig<T>| {363 // Modification of storage364 for (_num, _c) in &config.collection_id {365 <Module<T>>::init_collection(_c);366 }367368 for (_num, _c, _i) in &config.nft_item_id {369 <Module<T>>::init_nft_token(*_c, _i);370 }371372 for (collection_id, account_id, fungible_item) in &config.fungible_item_id {373 <Module<T>>::init_fungible_token(*collection_id, &T::CrossAccountId::from_sub(account_id.clone()), fungible_item);374 }375376 for (_num, _c, _i) in &config.refungible_item_id {377 <Module<T>>::init_refungible_token(*_c, _i);378 }379 })380 }381}382383decl_event!(384 pub enum Event<T>385 where386 AccountId = <T as frame_system::Config>::AccountId,387 CrossAccountId = <T as Config>::CrossAccountId,388 {389 /// New collection was created390 ///391 /// # Arguments392 ///393 /// * collection_id: Globally unique identifier of newly created collection.394 ///395 /// * mode: [CollectionMode] converted into u8.396 ///397 /// * account_id: Collection owner.398 CollectionCreated(CollectionId, u8, AccountId),399400 /// New item was created.401 ///402 /// # Arguments403 ///404 /// * collection_id: Id of the collection where item was created.405 ///406 /// * item_id: Id of an item. Unique within the collection.407 ///408 /// * recipient: Owner of newly created item409 ItemCreated(CollectionId, TokenId, CrossAccountId),410411 /// Collection item was burned.412 ///413 /// # Arguments414 ///415 /// collection_id.416 ///417 /// item_id: Identifier of burned NFT.418 ItemDestroyed(CollectionId, TokenId),419420 /// Item was transferred421 ///422 /// * collection_id: Id of collection to which item is belong423 ///424 /// * item_id: Id of an item425 ///426 /// * sender: Original owner of item427 ///428 /// * recipient: New owner of item429 ///430 /// * amount: Always 1 for NFT431 Transfer(CollectionId, TokenId, CrossAccountId, CrossAccountId, u128),432433 /// * collection_id434 ///435 /// * item_id436 ///437 /// * sender438 ///439 /// * spender440 ///441 /// * amount442 Approved(CollectionId, TokenId, CrossAccountId, CrossAccountId, u128),443 }444);445446decl_module! {447 pub struct Module<T: Config> for enum Call448 where449 origin: T::Origin450 {451 fn deposit_event() = default;452 const CollectionAdminsLimit: u64 = COLLECTION_ADMINS_LIMIT;453 type Error = Error<T>;454455 fn on_initialize(_now: T::BlockNumber) -> Weight {456 0457 }458459 /// 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.460 ///461 /// # Permissions462 ///463 /// * Anyone.464 ///465 /// # Arguments466 ///467 /// * collection_name: UTF-16 string with collection name (limit 64 characters), will be stored as zero-terminated.468 ///469 /// * collection_description: UTF-16 string with collection description (limit 256 characters), will be stored as zero-terminated.470 ///471 /// * token_prefix: UTF-8 string with token prefix.472 ///473 /// * mode: [CollectionMode] collection type and type dependent data.474 // returns collection ID475 #[weight = <SelfWeightOf<T>>::create_collection()]476 #[transactional]477 pub fn create_collection(origin,478 collection_name: Vec<u16>,479 collection_description: Vec<u16>,480 token_prefix: Vec<u8>,481 mode: CollectionMode) -> DispatchResult {482483 // Anyone can create a collection484 let who = ensure_signed(origin)?;485486 // Take a (non-refundable) deposit of collection creation487 let mut imbalance = <<<T as Config>::Currency as Currency<T::AccountId>>::PositiveImbalance>::zero();488 imbalance.subsume(<<T as Config>::Currency as Currency<T::AccountId>>::deposit_creating(489 &T::TreasuryAccountId::get(),490 T::CollectionCreationPrice::get(),491 ));492 <T as Config>::Currency::settle(493 &who,494 imbalance,495 WithdrawReasons::TRANSFER,496 ExistenceRequirement::KeepAlive,497 ).map_err(|_| Error::<T>::NoPermission)?;498499 let decimal_points = match mode {500 CollectionMode::Fungible(points) => points,501 _ => 0502 };503504 let created_count = CreatedCollectionCount::get();505 let destroyed_count = DestroyedCollectionCount::get();506507 // bound Total number of collections508 ensure!(created_count - destroyed_count < COLLECTION_NUMBER_LIMIT, Error::<T>::TotalCollectionsLimitExceeded);509510 // check params511 ensure!(decimal_points <= MAX_DECIMAL_POINTS, Error::<T>::CollectionDecimalPointLimitExceeded);512 ensure!(collection_name.len() <= MAX_COLLECTION_NAME_LENGTH, Error::<T>::CollectionNameLimitExceeded);513 ensure!(collection_description.len() <= MAX_COLLECTION_DESCRIPTION_LENGTH, Error::<T>::CollectionDescriptionLimitExceeded);514 ensure!(token_prefix.len() <= MAX_TOKEN_PREFIX_LENGTH, Error::<T>::CollectionTokenPrefixLimitExceeded);515516 // Generate next collection ID517 let next_id = created_count518 .checked_add(1)519 .ok_or(Error::<T>::NumOverflow)?;520521 CreatedCollectionCount::put(next_id);522523 let limits = CollectionLimits {524 sponsored_data_size: CUSTOM_DATA_LIMIT,525 ..Default::default()526 };527528 // Create new collection529 let new_collection = Collection {530 owner: who.clone(),531 name: collection_name,532 mode: mode.clone(),533 mint_mode: false,534 access: AccessMode::Normal,535 description: collection_description,536 decimal_points,537 token_prefix,538 offchain_schema: Vec::new(),539 schema_version: SchemaVersion::ImageURL,540 sponsorship: SponsorshipState::Disabled,541 variable_on_chain_schema: Vec::new(),542 const_on_chain_schema: Vec::new(),543 limits,544 transfers_enabled: true,545 };546547 // Add new collection to map548 <CollectionById<T>>::insert(next_id, new_collection);549550 // call event551 Self::deposit_event(RawEvent::CollectionCreated(next_id, mode.id(), who));552553 Ok(())554 }555556 /// **DANGEROUS**: Destroys collection and all NFTs within this collection. Users irrecoverably lose their assets and may lose real money.557 ///558 /// # Permissions559 ///560 /// * Collection Owner.561 ///562 /// # Arguments563 ///564 /// * collection_id: collection to destroy.565 #[weight = <SelfWeightOf<T>>::destroy_collection()]566 #[transactional]567 pub fn destroy_collection(origin, collection_id: CollectionId) -> DispatchResult {568569 let sender = ensure_signed(origin)?;570 let collection = Self::get_collection(collection_id)?;571 Self::check_owner_permissions(&collection, &sender)?;572 if !collection.limits.owner_can_destroy {573 fail!(Error::<T>::NoPermission);574 }575576 <AddressTokens<T>>::remove_prefix(collection_id, None);577 <Allowances<T>>::remove_prefix(collection_id, None);578 <Balance<T>>::remove_prefix(collection_id, None);579 <ItemListIndex>::remove(collection_id);580 <AdminList<T>>::remove(collection_id);581 <CollectionById<T>>::remove(collection_id);582 <WhiteList<T>>::remove_prefix(collection_id, None);583584 <NftItemList<T>>::remove_prefix(collection_id, None);585 <FungibleItemList<T>>::remove_prefix(collection_id, None);586 <ReFungibleItemList<T>>::remove_prefix(collection_id, None);587588 <NftTransferBasket<T>>::remove_prefix(collection_id, None);589 <FungibleTransferBasket<T>>::remove_prefix(collection_id, None);590 <ReFungibleTransferBasket<T>>::remove_prefix(collection_id, None);591592 <VariableMetaDataBasket<T>>::remove_prefix(collection_id, None);593594 DestroyedCollectionCount::put(DestroyedCollectionCount::get()595 .checked_add(1)596 .ok_or(Error::<T>::NumOverflow)?);597598 Ok(())599 }600601 /// Add an address to white list.602 ///603 /// # Permissions604 ///605 /// * Collection Owner606 /// * Collection Admin607 ///608 /// # Arguments609 ///610 /// * collection_id.611 ///612 /// * address.613 #[weight = <SelfWeightOf<T>>::add_to_white_list()]614 #[transactional]615 pub fn add_to_white_list(origin, collection_id: CollectionId, address: T::CrossAccountId) -> DispatchResult{616617 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);618 let collection = Self::get_collection(collection_id)?;619620 Self::toggle_white_list_internal(621 &sender,622 &collection,623 &address,624 true,625 )?;626627 Ok(())628 }629630 /// Remove an address from white list.631 ///632 /// # Permissions633 ///634 /// * Collection Owner635 /// * Collection Admin636 ///637 /// # Arguments638 ///639 /// * collection_id.640 ///641 /// * address.642 #[weight = <SelfWeightOf<T>>::remove_from_white_list()]643 #[transactional]644 pub fn remove_from_white_list(origin, collection_id: CollectionId, address: T::CrossAccountId) -> DispatchResult{645646 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);647 let collection = Self::get_collection(collection_id)?;648649 Self::toggle_white_list_internal(650 &sender,651 &collection,652 &address,653 false,654 )?;655656 Ok(())657 }658659 /// Toggle between normal and white list access for the methods with access for `Anyone`.660 ///661 /// # Permissions662 ///663 /// * Collection Owner.664 ///665 /// # Arguments666 ///667 /// * collection_id.668 ///669 /// * mode: [AccessMode]670 #[weight = <SelfWeightOf<T>>::set_public_access_mode()]671 #[transactional]672 pub fn set_public_access_mode(origin, collection_id: CollectionId, mode: AccessMode) -> DispatchResult673 {674 let sender = ensure_signed(origin)?;675676 let mut target_collection = Self::get_collection(collection_id)?;677 Self::check_owner_permissions(&target_collection, &sender)?;678 target_collection.access = mode;679 target_collection.save()680 }681682 /// Allows Anyone to create tokens if:683 /// * White List is enabled, and684 /// * Address is added to white list, and685 /// * This method was called with True parameter686 ///687 /// # Permissions688 /// * Collection Owner689 ///690 /// # Arguments691 ///692 /// * collection_id.693 ///694 /// * mint_permission: Boolean parameter. If True, allows minting to Anyone with conditions above.695 #[weight = <SelfWeightOf<T>>::set_mint_permission()]696 #[transactional]697 pub fn set_mint_permission(origin, collection_id: CollectionId, mint_permission: bool) -> DispatchResult698 {699 let sender = ensure_signed(origin)?;700701 let mut target_collection = Self::get_collection(collection_id)?;702 Self::check_owner_permissions(&target_collection, &sender)?;703 target_collection.mint_mode = mint_permission;704 target_collection.save()705 }706707 /// Change the owner of the collection.708 ///709 /// # Permissions710 ///711 /// * Collection Owner.712 ///713 /// # Arguments714 ///715 /// * collection_id.716 ///717 /// * new_owner.718 #[weight = <SelfWeightOf<T>>::change_collection_owner()]719 #[transactional]720 pub fn change_collection_owner(origin, collection_id: CollectionId, new_owner: T::AccountId) -> DispatchResult {721722 let sender = ensure_signed(origin)?;723 let mut target_collection = Self::get_collection(collection_id)?;724 Self::check_owner_permissions(&target_collection, &sender)?;725 target_collection.owner = new_owner;726 target_collection.save()727 }728729 /// Adds an admin of the Collection.730 /// 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.731 ///732 /// # Permissions733 ///734 /// * Collection Owner.735 /// * Collection Admin.736 ///737 /// # Arguments738 ///739 /// * collection_id: ID of the Collection to add admin for.740 ///741 /// * new_admin_id: Address of new admin to add.742 #[weight = <SelfWeightOf<T>>::add_collection_admin()]743 #[transactional]744 pub fn add_collection_admin(origin, collection_id: CollectionId, new_admin_id: T::CrossAccountId) -> DispatchResult {745 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);746 let collection = Self::get_collection(collection_id)?;747 Self::check_owner_or_admin_permissions(&collection, &sender)?;748 let mut admin_arr = <AdminList<T>>::get(collection_id);749750 match admin_arr.binary_search(&new_admin_id) {751 Ok(_) => {},752 Err(idx) => {753 ensure!(admin_arr.len() < COLLECTION_ADMINS_LIMIT as usize, Error::<T>::CollectionAdminsLimitExceeded);754 admin_arr.insert(idx, new_admin_id);755 <AdminList<T>>::insert(collection_id, admin_arr);756 }757 }758 Ok(())759 }760761 /// 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.762 ///763 /// # Permissions764 ///765 /// * Collection Owner.766 /// * Collection Admin.767 ///768 /// # Arguments769 ///770 /// * collection_id: ID of the Collection to remove admin for.771 ///772 /// * account_id: Address of admin to remove.773 #[weight = <SelfWeightOf<T>>::remove_collection_admin()]774 #[transactional]775 pub fn remove_collection_admin(origin, collection_id: CollectionId, account_id: T::CrossAccountId) -> DispatchResult {776 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);777 let collection = Self::get_collection(collection_id)?;778 Self::check_owner_or_admin_permissions(&collection, &sender)?;779 let mut admin_arr = <AdminList<T>>::get(collection_id);780781 if let Ok(idx) = admin_arr.binary_search(&account_id) {782 admin_arr.remove(idx);783 <AdminList<T>>::insert(collection_id, admin_arr);784 }785 Ok(())786 }787788 /// # Permissions789 ///790 /// * Collection Owner791 ///792 /// # Arguments793 ///794 /// * collection_id.795 ///796 /// * new_sponsor.797 #[weight = <SelfWeightOf<T>>::set_collection_sponsor()]798 #[transactional]799 pub fn set_collection_sponsor(origin, collection_id: CollectionId, new_sponsor: T::AccountId) -> DispatchResult {800 let sender = ensure_signed(origin)?;801 let mut target_collection = Self::get_collection(collection_id)?;802 Self::check_owner_permissions(&target_collection, &sender)?;803804 target_collection.sponsorship = SponsorshipState::Unconfirmed(new_sponsor);805 target_collection.save()806 }807808 /// # Permissions809 ///810 /// * Sponsor.811 ///812 /// # Arguments813 ///814 /// * collection_id.815 #[weight = <SelfWeightOf<T>>::confirm_sponsorship()]816 #[transactional]817 pub fn confirm_sponsorship(origin, collection_id: CollectionId) -> DispatchResult {818 let sender = ensure_signed(origin)?;819820 let mut target_collection = Self::get_collection(collection_id)?;821 ensure!(822 target_collection.sponsorship.pending_sponsor() == Some(&sender),823 Error::<T>::ConfirmUnsetSponsorFail824 );825826 target_collection.sponsorship = SponsorshipState::Confirmed(sender);827 target_collection.save()828 }829830 /// Switch back to pay-per-own-transaction model.831 ///832 /// # Permissions833 ///834 /// * Collection owner.835 ///836 /// # Arguments837 ///838 /// * collection_id.839 #[weight = <SelfWeightOf<T>>::remove_collection_sponsor()]840 #[transactional]841 pub fn remove_collection_sponsor(origin, collection_id: CollectionId) -> DispatchResult {842 let sender = ensure_signed(origin)?;843844 let mut target_collection = Self::get_collection(collection_id)?;845 Self::check_owner_permissions(&target_collection, &sender)?;846847 target_collection.sponsorship = SponsorshipState::Disabled;848 target_collection.save()849 }850851 /// This method creates a concrete instance of NFT Collection created with CreateCollection method.852 ///853 /// # Permissions854 ///855 /// * Collection Owner.856 /// * Collection Admin.857 /// * Anyone if858 /// * White List is enabled, and859 /// * Address is added to white list, and860 /// * MintPermission is enabled (see SetMintPermission method)861 ///862 /// # Arguments863 ///864 /// * collection_id: ID of the collection.865 ///866 /// * owner: Address, initial owner of the NFT.867 ///868 /// * data: Token data to store on chain.869 // #[weight =870 // (130_000_000 as Weight)871 // .saturating_add((2135 as Weight).saturating_mul((properties.len() as u64) as Weight))872 // .saturating_add(RocksDbWeight::get().reads(10 as Weight))873 // .saturating_add(RocksDbWeight::get().writes(8 as Weight))]874875 #[weight = <SelfWeightOf<T>>::create_item(data.data_size() as u32)]876 #[transactional]877 pub fn create_item(origin, collection_id: CollectionId, owner: T::CrossAccountId, data: CreateItemData) -> DispatchResult {878 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);879 let collection = Self::get_collection(collection_id)?;880881 Self::create_item_internal(&sender, &collection, &owner, data)?;882883 collection.submit_logs()884 }885886 /// This method creates multiple items in a collection created with CreateCollection method.887 ///888 /// # Permissions889 ///890 /// * Collection Owner.891 /// * Collection Admin.892 /// * Anyone if893 /// * White List is enabled, and894 /// * Address is added to white list, and895 /// * MintPermission is enabled (see SetMintPermission method)896 ///897 /// # Arguments898 ///899 /// * collection_id: ID of the collection.900 ///901 /// * itemsData: Array items properties. Each property is an array of bytes itself, see [create_item].902 ///903 /// * owner: Address, initial owner of the NFT.904 #[weight = <SelfWeightOf<T>>::create_multiple_items(items_data.len() as u32)]905 #[transactional]906 pub fn create_multiple_items(origin, collection_id: CollectionId, owner: T::CrossAccountId, items_data: Vec<CreateItemData>) -> DispatchResult {907908 ensure!(!items_data.is_empty(), Error::<T>::EmptyArgument);909 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);910 let collection = Self::get_collection(collection_id)?;911912 Self::create_multiple_items_internal(&sender, &collection, &owner, items_data)?;913914 collection.submit_logs()915 }916917 // TODO! transaction weight918919 /// Set transfers_enabled value for particular collection920 ///921 /// # Permissions922 ///923 /// * Collection Owner.924 ///925 /// # Arguments926 ///927 /// * collection_id: ID of the collection.928 ///929 /// * value: New flag value.930 #[weight = <SelfWeightOf<T>>::set_transfers_enabled_flag()]931 #[transactional]932 pub fn set_transfers_enabled_flag(origin, collection_id: CollectionId, value: bool) -> DispatchResult {933934 let sender = ensure_signed(origin)?;935 let mut target_collection = Self::get_collection(collection_id)?;936937 Self::check_owner_permissions(&target_collection, &sender)?;938939 target_collection.transfers_enabled = value;940 target_collection.save()941 }942943 /// Destroys a concrete instance of NFT.944 ///945 /// # Permissions946 ///947 /// * Collection Owner.948 /// * Collection Admin.949 /// * Current NFT Owner.950 ///951 /// # Arguments952 ///953 /// * collection_id: ID of the collection.954 ///955 /// * item_id: ID of NFT to burn.956 #[weight = <SelfWeightOf<T>>::burn_item()]957 #[transactional]958 pub fn burn_item(origin, collection_id: CollectionId, item_id: TokenId, value: u128) -> DispatchResult {959960 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);961 let target_collection = Self::get_collection(collection_id)?;962963 Self::burn_item_internal(&sender, &target_collection, item_id, value)?;964965 target_collection.submit_logs()966 }967968 /// Change ownership of the token.969 ///970 /// # Permissions971 ///972 /// * Collection Owner973 /// * Collection Admin974 /// * Current NFT owner975 ///976 /// # Arguments977 ///978 /// * recipient: Address of token recipient.979 ///980 /// * collection_id.981 ///982 /// * item_id: ID of the item983 /// * Non-Fungible Mode: Required.984 /// * Fungible Mode: Ignored.985 /// * Re-Fungible Mode: Required.986 ///987 /// * value: Amount to transfer.988 /// * Non-Fungible Mode: Ignored989 /// * Fungible Mode: Must specify transferred amount990 /// * Re-Fungible Mode: Must specify transferred portion (between 0 and 1)991 #[weight = <SelfWeightOf<T>>::transfer()]992 #[transactional]993 pub fn transfer(origin, recipient: T::CrossAccountId, collection_id: CollectionId, item_id: TokenId, value: u128) -> DispatchResult {994 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);995 let collection = Self::get_collection(collection_id)?;996997 Self::transfer_internal(&sender, &recipient, &collection, item_id, value)?;998999 collection.submit_logs()1000 }10011002 /// Set, change, or remove approved address to transfer the ownership of the NFT.1003 ///1004 /// # Permissions1005 ///1006 /// * Collection Owner1007 /// * Collection Admin1008 /// * Current NFT owner1009 ///1010 /// # Arguments1011 ///1012 /// * approved: Address that is approved to transfer this NFT or zero (if needed to remove approval).1013 ///1014 /// * collection_id.1015 ///1016 /// * item_id: ID of the item.1017 #[weight = <SelfWeightOf<T>>::approve()]1018 #[transactional]1019 pub fn approve(origin, spender: T::CrossAccountId, collection_id: CollectionId, item_id: TokenId, amount: u128) -> DispatchResult {1020 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);1021 let collection = Self::get_collection(collection_id)?;10221023 Self::approve_internal(&sender, &spender, &collection, item_id, amount)?;10241025 collection.submit_logs()1026 }10271028 /// 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.1029 ///1030 /// # Permissions1031 /// * Collection Owner1032 /// * Collection Admin1033 /// * Current NFT owner1034 /// * Address approved by current NFT owner1035 ///1036 /// # Arguments1037 ///1038 /// * from: Address that owns token.1039 ///1040 /// * recipient: Address of token recipient.1041 ///1042 /// * collection_id.1043 ///1044 /// * item_id: ID of the item.1045 ///1046 /// * value: Amount to transfer.1047 #[weight = <SelfWeightOf<T>>::transfer_from()]1048 #[transactional]1049 pub fn transfer_from(origin, from: T::CrossAccountId, recipient: T::CrossAccountId, collection_id: CollectionId, item_id: TokenId, value: u128 ) -> DispatchResult {1050 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);1051 let collection = Self::get_collection(collection_id)?;10521053 Self::transfer_from_internal(&sender, &from, &recipient, &collection, item_id, value)?;10541055 collection.submit_logs()1056 }1057 // #[weight = 0]1058 // // let no_perm_mes = "You do not have permissions to modify this collection";1059 // // ensure!(<ApprovedList<T>>::contains_key((collection_id, item_id)), no_perm_mes);1060 // // let list_itm = <ApprovedList<T>>::get((collection_id, item_id));1061 // // ensure!(list_itm.contains(&new_owner.clone()), no_perm_mes);10621063 // // // on_nft_received call10641065 // // Self::transfer(origin, collection_id, item_id, new_owner)?;10661067 // Ok(())1068 // }10691070 /// Set off-chain data schema.1071 ///1072 /// # Permissions1073 ///1074 /// * Collection Owner1075 /// * Collection Admin1076 ///1077 /// # Arguments1078 ///1079 /// * collection_id.1080 ///1081 /// * schema: String representing the offchain data schema.1082 #[weight = <SelfWeightOf<T>>::set_variable_meta_data(data.len() as u32)]1083 #[transactional]1084 pub fn set_variable_meta_data (1085 origin,1086 collection_id: CollectionId,1087 item_id: TokenId,1088 data: Vec<u8>1089 ) -> DispatchResult {1090 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);10911092 let collection = Self::get_collection(collection_id)?;10931094 Self::set_variable_meta_data_internal(&sender, &collection, item_id, data)?;10951096 Ok(())1097 }10981099 /// Set schema standard1100 /// ImageURL1101 /// Unique1102 ///1103 /// # Permissions1104 ///1105 /// * Collection Owner1106 /// * Collection Admin1107 ///1108 /// # Arguments1109 ///1110 /// * collection_id.1111 ///1112 /// * schema: SchemaVersion: enum1113 #[weight = <SelfWeightOf<T>>::set_schema_version()]1114 #[transactional]1115 pub fn set_schema_version(1116 origin,1117 collection_id: CollectionId,1118 version: SchemaVersion1119 ) -> DispatchResult {1120 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);1121 let mut target_collection = Self::get_collection(collection_id)?;1122 Self::check_owner_or_admin_permissions(&target_collection, &sender)?;1123 target_collection.schema_version = version;1124 target_collection.save()1125 }11261127 /// Set off-chain data schema.1128 ///1129 /// # Permissions1130 ///1131 /// * Collection Owner1132 /// * Collection Admin1133 ///1134 /// # Arguments1135 ///1136 /// * collection_id.1137 ///1138 /// * schema: String representing the offchain data schema.1139 #[weight = <SelfWeightOf<T>>::set_offchain_schema(schema.len() as u32)]1140 #[transactional]1141 pub fn set_offchain_schema(1142 origin,1143 collection_id: CollectionId,1144 schema: Vec<u8>1145 ) -> DispatchResult {1146 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);1147 let mut target_collection = Self::get_collection(collection_id)?;1148 Self::check_owner_or_admin_permissions(&target_collection, &sender)?;11491150 // check schema limit1151 ensure!(schema.len() as u32 <= OFFCHAIN_SCHEMA_LIMIT, "");11521153 target_collection.offchain_schema = schema;1154 target_collection.save()1155 }11561157 /// Set const on-chain data schema.1158 ///1159 /// # Permissions1160 ///1161 /// * Collection Owner1162 /// * Collection Admin1163 ///1164 /// # Arguments1165 ///1166 /// * collection_id.1167 ///1168 /// * schema: String representing the const on-chain data schema.1169 #[weight = <SelfWeightOf<T>>::set_const_on_chain_schema(schema.len() as u32)]1170 #[transactional]1171 pub fn set_const_on_chain_schema (1172 origin,1173 collection_id: CollectionId,1174 schema: Vec<u8>1175 ) -> DispatchResult {1176 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);1177 let mut target_collection = Self::get_collection(collection_id)?;1178 Self::check_owner_or_admin_permissions(&target_collection, &sender)?;11791180 // check schema limit1181 ensure!(schema.len() as u32 <= CONST_ON_CHAIN_SCHEMA_LIMIT, "");11821183 target_collection.const_on_chain_schema = schema;1184 target_collection.save()1185 }11861187 /// Set variable on-chain data schema.1188 ///1189 /// # Permissions1190 ///1191 /// * Collection Owner1192 /// * Collection Admin1193 ///1194 /// # Arguments1195 ///1196 /// * collection_id.1197 ///1198 /// * schema: String representing the variable on-chain data schema.1199 #[weight = <SelfWeightOf<T>>::set_const_on_chain_schema(schema.len() as u32)]1200 #[transactional]1201 pub fn set_variable_on_chain_schema (1202 origin,1203 collection_id: CollectionId,1204 schema: Vec<u8>1205 ) -> DispatchResult {1206 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);1207 let mut target_collection = Self::get_collection(collection_id)?;1208 Self::check_owner_or_admin_permissions(&target_collection, &sender)?;12091210 // check schema limit1211 ensure!(schema.len() as u32 <= VARIABLE_ON_CHAIN_SCHEMA_LIMIT, "");12121213 target_collection.variable_on_chain_schema = schema;1214 target_collection.save()1215 }12161217 #[weight = <SelfWeightOf<T>>::set_collection_limits()]1218 #[transactional]1219 pub fn set_collection_limits(1220 origin,1221 collection_id: u32,1222 new_limits: CollectionLimits<T::BlockNumber>,1223 ) -> DispatchResult {1224 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);1225 let mut target_collection = Self::get_collection(collection_id)?;1226 Self::check_owner_permissions(&target_collection, sender.as_sub())?;1227 let old_limits = &target_collection.limits;12281229 // collection bounds1230 ensure!(new_limits.sponsor_transfer_timeout <= MAX_SPONSOR_TIMEOUT &&1231 new_limits.account_token_ownership_limit <= MAX_TOKEN_OWNERSHIP &&1232 new_limits.sponsored_data_size <= CUSTOM_DATA_LIMIT,1233 Error::<T>::CollectionLimitBoundsExceeded);12341235 // token_limit check prev1236 ensure!(old_limits.token_limit >= new_limits.token_limit, Error::<T>::CollectionTokenLimitExceeded);1237 ensure!(new_limits.token_limit > 0, Error::<T>::CollectionTokenLimitExceeded);12381239 ensure!(1240 (old_limits.owner_can_transfer || !new_limits.owner_can_transfer) &&1241 (old_limits.owner_can_destroy || !new_limits.owner_can_destroy),1242 Error::<T>::OwnerPermissionsCantBeReverted,1243 );12441245 target_collection.limits = new_limits;12461247 target_collection.save()1248 }1249 }1250}12511252impl<T: Config> Module<T> {1253 pub fn create_item_internal(1254 sender: &T::CrossAccountId,1255 collection: &CollectionHandle<T>,1256 owner: &T::CrossAccountId,1257 data: CreateItemData,1258 ) -> DispatchResult {1259 ensure!(1260 owner != &T::CrossAccountId::from_eth(H160([0; 20])),1261 Error::<T>::AddressIsZero1262 );12631264 Self::can_create_items_in_collection(collection, sender, owner, 1)?;1265 Self::validate_create_item_args(collection, &data)?;1266 Self::create_item_no_validation(collection, owner, data)?;12671268 Ok(())1269 }12701271 pub fn transfer_internal(1272 sender: &T::CrossAccountId,1273 recipient: &T::CrossAccountId,1274 target_collection: &CollectionHandle<T>,1275 item_id: TokenId,1276 value: u128,1277 ) -> DispatchResult {1278 ensure!(1279 recipient != &T::CrossAccountId::from_eth(H160([0; 20])),1280 Error::<T>::AddressIsZero1281 );12821283 // Limits check1284 Self::is_correct_transfer(target_collection, recipient)?;12851286 // Transfer permissions check1287 ensure!(1288 Self::is_item_owner(sender, target_collection, item_id)?1289 || Self::is_owner_or_admin_permissions(target_collection, sender)?,1290 Error::<T>::NoPermission1291 );12921293 if target_collection.access == AccessMode::WhiteList {1294 Self::check_white_list(target_collection, sender)?;1295 Self::check_white_list(target_collection, recipient)?;1296 }12971298 match target_collection.mode {1299 CollectionMode::NFT => Self::transfer_nft(1300 target_collection,1301 item_id,1302 sender.clone(),1303 recipient.clone(),1304 )?,1305 CollectionMode::Fungible(_) => {1306 Self::transfer_fungible(target_collection, value, sender, recipient)?1307 }1308 CollectionMode::ReFungible => Self::transfer_refungible(1309 target_collection,1310 item_id,1311 value,1312 sender.clone(),1313 recipient.clone(),1314 )?,1315 _ => (),1316 };13171318 Self::deposit_event(RawEvent::Transfer(1319 target_collection.id,1320 item_id,1321 sender.clone(),1322 recipient.clone(),1323 value,1324 ));13251326 Ok(())1327 }13281329 pub fn approve_internal(1330 sender: &T::CrossAccountId,1331 spender: &T::CrossAccountId,1332 collection: &CollectionHandle<T>,1333 item_id: TokenId,1334 amount: u128,1335 ) -> DispatchResult {1336 Self::token_exists(collection, item_id)?;13371338 // Transfer permissions check1339 let bypasses_limits = collection.limits.owner_can_transfer1340 && Self::is_owner_or_admin_permissions(collection, sender)?;13411342 let allowance_limit = if bypasses_limits {1343 None1344 } else if let Some(amount) = Self::owned_amount(sender, collection, item_id)? {1345 Some(amount)1346 } else {1347 fail!(Error::<T>::NoPermission);1348 };13491350 if collection.access == AccessMode::WhiteList {1351 Self::check_white_list(collection, sender)?;1352 Self::check_white_list(collection, spender)?;1353 }13541355 collection.consume_sload()?;1356 let allowance: u128 = amount1357 .checked_add(<Allowances<T>>::get(1358 collection.id,1359 (item_id, sender.as_sub(), spender.as_sub()),1360 ))1361 .ok_or(Error::<T>::NumOverflow)?;1362 if let Some(limit) = allowance_limit {1363 ensure!(limit >= allowance, Error::<T>::TokenValueTooLow);1364 }1365 collection.consume_sstore()?;1366 <Allowances<T>>::insert(1367 collection.id,1368 (item_id, sender.as_sub(), spender.as_sub()),1369 allowance,1370 );13711372 if matches!(collection.mode, CollectionMode::NFT) {1373 // TODO: NFT: only one owner may exist for token in ERC7211374 collection.log(ERC721Events::Approval {1375 owner: *sender.as_eth(),1376 approved: *spender.as_eth(),1377 token_id: item_id.into(),1378 })?;1379 }13801381 if matches!(collection.mode, CollectionMode::Fungible(_)) {1382 // TODO: NFT: only one owner may exist for token in ERC201383 collection.log(ERC20Events::Approval {1384 owner: *sender.as_eth(),1385 spender: *spender.as_eth(),1386 value: allowance.into(),1387 })?;1388 }13891390 Self::deposit_event(RawEvent::Approved(1391 collection.id,1392 item_id,1393 sender.clone(),1394 spender.clone(),1395 allowance,1396 ));1397 Ok(())1398 }13991400 pub fn transfer_from_internal(1401 sender: &T::CrossAccountId,1402 from: &T::CrossAccountId,1403 recipient: &T::CrossAccountId,1404 collection: &CollectionHandle<T>,1405 item_id: TokenId,1406 amount: u128,1407 ) -> DispatchResult {1408 if sender == from {1409 // Transfer by `from`, because it is either equal to sender, or derived from him1410 return Self::transfer_internal(from, recipient, collection, item_id, amount);1411 }14121413 // Check approval1414 collection.consume_sload()?;1415 let approval: u128 =1416 <Allowances<T>>::get(collection.id, (item_id, from.as_sub(), sender.as_sub()));14171418 // Limits check1419 Self::is_correct_transfer(collection, recipient)?;14201421 // Transfer permissions check1422 ensure!(1423 approval >= amount1424 || (collection.limits.owner_can_transfer1425 && Self::is_owner_or_admin_permissions(collection, sender)?),1426 Error::<T>::NoPermission1427 );14281429 if collection.access == AccessMode::WhiteList {1430 Self::check_white_list(collection, sender)?;1431 Self::check_white_list(collection, recipient)?;1432 }14331434 // Reduce approval by transferred amount or remove if remaining approval drops to 01435 let allowance = approval.saturating_sub(amount);1436 collection.consume_sstore()?;1437 if allowance > 0 {1438 <Allowances<T>>::insert(1439 collection.id,1440 (item_id, from.as_sub(), sender.as_sub()),1441 allowance,1442 );1443 } else {1444 <Allowances<T>>::remove(collection.id, (item_id, from.as_sub(), sender.as_sub()));1445 }14461447 match collection.mode {1448 CollectionMode::NFT => {1449 Self::transfer_nft(collection, item_id, from.clone(), recipient.clone())?1450 }1451 CollectionMode::Fungible(_) => {1452 Self::transfer_fungible(collection, amount, from, recipient)?1453 }1454 CollectionMode::ReFungible => Self::transfer_refungible(1455 collection,1456 item_id,1457 amount,1458 from.clone(),1459 recipient.clone(),1460 )?,1461 _ => (),1462 };14631464 if matches!(collection.mode, CollectionMode::Fungible(_)) {1465 collection.log(ERC20Events::Approval {1466 owner: *from.as_eth(),1467 spender: *sender.as_eth(),1468 value: allowance.into(),1469 })?;1470 }14711472 Ok(())1473 }14741475 pub fn set_variable_meta_data_internal(1476 sender: &T::CrossAccountId,1477 collection: &CollectionHandle<T>,1478 item_id: TokenId,1479 data: Vec<u8>,1480 ) -> DispatchResult {1481 Self::token_exists(collection, item_id)?;14821483 ensure!(1484 CUSTOM_DATA_LIMIT >= data.len() as u32,1485 Error::<T>::TokenVariableDataLimitExceeded1486 );14871488 // Modify permissions check1489 ensure!(1490 Self::is_item_owner(sender, collection, item_id)?1491 || Self::is_owner_or_admin_permissions(collection, sender)?,1492 Error::<T>::NoPermission1493 );14941495 match collection.mode {1496 CollectionMode::NFT => Self::set_nft_variable_data(collection, item_id, data)?,1497 CollectionMode::ReFungible => {1498 Self::set_re_fungible_variable_data(collection, item_id, data)?1499 }1500 CollectionMode::Fungible(_) => fail!(Error::<T>::CantStoreMetadataInFungibleTokens),1501 _ => fail!(Error::<T>::UnexpectedCollectionType),1502 };15031504 Ok(())1505 }15061507 pub fn get_variable_metadata(1508 collection: &CollectionHandle<T>,1509 item_id: TokenId,1510 ) -> Result<Vec<u8>, DispatchError> {1511 Ok(match collection.mode {1512 CollectionMode::NFT => {1513 <NftItemList<T>>::get(collection.id, item_id)1514 .ok_or(Error::<T>::TokenNotFound)?1515 .variable_data1516 }1517 CollectionMode::ReFungible => {1518 <ReFungibleItemList<T>>::get(collection.id, item_id)1519 .ok_or(Error::<T>::TokenNotFound)?1520 .variable_data1521 }1522 _ => fail!(Error::<T>::UnexpectedCollectionType),1523 })1524 }15251526 pub fn create_multiple_items_internal(1527 sender: &T::CrossAccountId,1528 collection: &CollectionHandle<T>,1529 owner: &T::CrossAccountId,1530 items_data: Vec<CreateItemData>,1531 ) -> DispatchResult {1532 Self::can_create_items_in_collection(collection, sender, owner, items_data.len() as u32)?;15331534 for data in &items_data {1535 Self::validate_create_item_args(collection, data)?;1536 }1537 for data in &items_data {1538 Self::create_item_no_validation(collection, owner, data.clone())?;1539 }15401541 Ok(())1542 }15431544 pub fn burn_item_internal(1545 sender: &T::CrossAccountId,1546 collection: &CollectionHandle<T>,1547 item_id: TokenId,1548 value: u128,1549 ) -> DispatchResult {1550 ensure!(1551 Self::is_item_owner(sender, collection, item_id)?1552 || (collection.limits.owner_can_transfer1553 && Self::is_owner_or_admin_permissions(collection, sender)?),1554 Error::<T>::NoPermission1555 );15561557 if collection.access == AccessMode::WhiteList {1558 Self::check_white_list(collection, sender)?;1559 }15601561 match collection.mode {1562 CollectionMode::NFT => Self::burn_nft_item(collection, item_id)?,1563 CollectionMode::Fungible(_) => Self::burn_fungible_item(sender, collection, value)?,1564 CollectionMode::ReFungible => Self::burn_refungible_item(collection, item_id, sender)?,1565 _ => (),1566 };15671568 Ok(())1569 }15701571 pub fn toggle_white_list_internal(1572 sender: &T::CrossAccountId,1573 collection: &CollectionHandle<T>,1574 address: &T::CrossAccountId,1575 whitelisted: bool,1576 ) -> DispatchResult {1577 Self::check_owner_or_admin_permissions(collection, sender)?;15781579 if whitelisted {1580 <WhiteList<T>>::insert(collection.id, address.as_sub(), true);1581 } else {1582 <WhiteList<T>>::remove(collection.id, address.as_sub());1583 }15841585 Ok(())1586 }15871588 fn is_correct_transfer(1589 collection: &CollectionHandle<T>,1590 recipient: &T::CrossAccountId,1591 ) -> DispatchResult {1592 let collection_id = collection.id;15931594 // check token limit and account token limit1595 collection.consume_sload()?;1596 let account_items: u32 =1597 <AddressTokens<T>>::get(collection_id, recipient.as_sub()).len() as u32;1598 ensure!(1599 collection.limits.account_token_ownership_limit > account_items,1600 Error::<T>::AccountTokenLimitExceeded1601 );16021603 // preliminary transfer check1604 ensure!(collection.transfers_enabled, Error::<T>::TransferNotAllowed);16051606 Ok(())1607 }16081609 fn can_create_items_in_collection(1610 collection: &CollectionHandle<T>,1611 sender: &T::CrossAccountId,1612 owner: &T::CrossAccountId,1613 amount: u32,1614 ) -> DispatchResult {1615 let collection_id = collection.id;16161617 // check token limit and account token limit1618 let total_items: u32 = ItemListIndex::get(collection_id)1619 .checked_add(amount)1620 .ok_or(Error::<T>::CollectionTokenLimitExceeded)?;1621 let account_items: u32 = (<AddressTokens<T>>::get(collection_id, owner.as_sub()).len()1622 as u32)1623 .checked_add(amount)1624 .ok_or(Error::<T>::AccountTokenLimitExceeded)?;1625 ensure!(1626 collection.limits.token_limit >= total_items,1627 Error::<T>::CollectionTokenLimitExceeded1628 );1629 ensure!(1630 collection.limits.account_token_ownership_limit >= account_items,1631 Error::<T>::AccountTokenLimitExceeded1632 );16331634 if !Self::is_owner_or_admin_permissions(collection, sender)? {1635 ensure!(collection.mint_mode, Error::<T>::PublicMintingNotAllowed);1636 Self::check_white_list(collection, owner)?;1637 Self::check_white_list(collection, sender)?;1638 }16391640 Ok(())1641 }16421643 fn validate_create_item_args(1644 target_collection: &CollectionHandle<T>,1645 data: &CreateItemData,1646 ) -> DispatchResult {1647 match target_collection.mode {1648 CollectionMode::NFT => {1649 if !matches!(data, CreateItemData::NFT(_)) {1650 fail!(Error::<T>::NotNftDataUsedToMintNftCollectionToken);1651 }1652 }1653 CollectionMode::Fungible(_) => {1654 if !matches!(data, CreateItemData::Fungible(_)) {1655 fail!(Error::<T>::NotFungibleDataUsedToMintFungibleCollectionToken);1656 }1657 }1658 CollectionMode::ReFungible => {1659 if let CreateItemData::ReFungible(data) = data {1660 // Check refungibility limits1661 ensure!(1662 data.pieces <= MAX_REFUNGIBLE_PIECES,1663 Error::<T>::WrongRefungiblePieces1664 );1665 ensure!(data.pieces > 0, Error::<T>::WrongRefungiblePieces);1666 } else {1667 fail!(Error::<T>::NotReFungibleDataUsedToMintReFungibleCollectionToken);1668 }1669 }1670 _ => {1671 fail!(Error::<T>::UnexpectedCollectionType);1672 }1673 };16741675 Ok(())1676 }16771678 fn create_item_no_validation(1679 collection: &CollectionHandle<T>,1680 owner: &T::CrossAccountId,1681 data: CreateItemData,1682 ) -> DispatchResult {1683 match data {1684 CreateItemData::NFT(data) => {1685 let item = NftItemType {1686 owner: owner.clone(),1687 const_data: data.const_data.into_inner(),1688 variable_data: data.variable_data.into_inner(),1689 };16901691 Self::add_nft_item(collection, item)?;1692 }1693 CreateItemData::Fungible(data) => {1694 Self::add_fungible_item(collection, owner, data.value)?;1695 }1696 CreateItemData::ReFungible(data) => {1697 let owner_list = vec![Ownership {1698 owner: owner.clone(),1699 fraction: data.pieces,1700 }];17011702 let item = ReFungibleItemType {1703 owner: owner_list,1704 const_data: data.const_data.into_inner(),1705 variable_data: data.variable_data.into_inner(),1706 };17071708 Self::add_refungible_item(collection, item)?;1709 }1710 };17111712 Ok(())1713 }17141715 fn add_fungible_item(1716 collection: &CollectionHandle<T>,1717 owner: &T::CrossAccountId,1718 value: u128,1719 ) -> DispatchResult {1720 let collection_id = collection.id;17211722 // Does new owner already have an account?1723 collection.consume_sload()?;1724 let balance: u128 = <FungibleItemList<T>>::get(collection_id, owner.as_sub()).value;17251726 // Mint1727 let item = FungibleItemType {1728 value: balance.checked_add(value).ok_or(Error::<T>::NumOverflow)?,1729 };1730 collection.consume_sstore()?;1731 <FungibleItemList<T>>::insert(collection_id, owner.as_sub(), item);17321733 // Update balance1734 collection.consume_sload()?;1735 let new_balance = <Balance<T>>::get(collection_id, owner.as_sub())1736 .checked_add(value)1737 .ok_or(Error::<T>::NumOverflow)?;1738 collection.consume_sstore()?;1739 <Balance<T>>::insert(collection_id, owner.as_sub(), new_balance);17401741 collection.log(ERC20Events::Transfer {1742 from: H160::default(),1743 to: *owner.as_eth(),1744 value: value.into(),1745 })?;1746 Self::deposit_event(RawEvent::ItemCreated(collection_id, 0, owner.clone()));1747 Ok(())1748 }17491750 fn add_refungible_item(1751 collection: &CollectionHandle<T>,1752 item: ReFungibleItemType<T::CrossAccountId>,1753 ) -> DispatchResult {1754 let collection_id = collection.id;17551756 let current_index = <ItemListIndex>::get(collection_id)1757 .checked_add(1)1758 .ok_or(Error::<T>::NumOverflow)?;1759 let itemcopy = item.clone();17601761 ensure!(item.owner.len() == 1, Error::<T>::BadCreateRefungibleCall,);1762 let item_owner = item.owner.first().expect("only one owner is defined");17631764 let value = item_owner.fraction;1765 let owner = item_owner.owner.clone();17661767 Self::add_token_index(collection, current_index, &owner)?;17681769 <ItemListIndex>::insert(collection_id, current_index);1770 <ReFungibleItemList<T>>::insert(collection_id, current_index, itemcopy);17711772 // Update balance1773 let new_balance = <Balance<T>>::get(collection_id, owner.as_sub())1774 .checked_add(value)1775 .ok_or(Error::<T>::NumOverflow)?;1776 <Balance<T>>::insert(collection_id, owner.as_sub(), new_balance);17771778 Self::deposit_event(RawEvent::ItemCreated(collection_id, current_index, owner));1779 Ok(())1780 }17811782 fn add_nft_item(1783 collection: &CollectionHandle<T>,1784 item: NftItemType<T::CrossAccountId>,1785 ) -> DispatchResult {1786 let collection_id = collection.id;17871788 let current_index = <ItemListIndex>::get(collection_id)1789 .checked_add(1)1790 .ok_or(Error::<T>::NumOverflow)?;17911792 let item_owner = item.owner.clone();1793 Self::add_token_index(collection, current_index, &item.owner)?;17941795 <ItemListIndex>::insert(collection_id, current_index);1796 <NftItemList<T>>::insert(collection_id, current_index, item);17971798 // Update balance1799 let new_balance = <Balance<T>>::get(collection_id, item_owner.as_sub())1800 .checked_add(1)1801 .ok_or(Error::<T>::NumOverflow)?;1802 <Balance<T>>::insert(collection_id, item_owner.as_sub(), new_balance);18031804 collection.log(ERC721Events::Transfer {1805 from: H160::default(),1806 to: *item_owner.as_eth(),1807 token_id: current_index.into(),1808 })?;1809 Self::deposit_event(RawEvent::ItemCreated(1810 collection_id,1811 current_index,1812 item_owner,1813 ));1814 Ok(())1815 }18161817 fn burn_refungible_item(1818 collection: &CollectionHandle<T>,1819 item_id: TokenId,1820 owner: &T::CrossAccountId,1821 ) -> DispatchResult {1822 let collection_id = collection.id;18231824 let mut token = <ReFungibleItemList<T>>::get(collection_id, item_id)1825 .ok_or(Error::<T>::TokenNotFound)?;1826 let rft_balance = token1827 .owner1828 .iter()1829 .find(|&i| i.owner == *owner)1830 .ok_or(Error::<T>::TokenNotFound)?;1831 Self::remove_token_index(collection, item_id, owner)?;18321833 // update balance1834 let new_balance = <Balance<T>>::get(collection_id, rft_balance.owner.as_sub())1835 .checked_sub(rft_balance.fraction)1836 .ok_or(Error::<T>::NumOverflow)?;1837 <Balance<T>>::insert(collection_id, rft_balance.owner.as_sub(), new_balance);18381839 // Re-create owners list with sender removed1840 let index = token1841 .owner1842 .iter()1843 .position(|i| i.owner == *owner)1844 .expect("owned item is exists");1845 token.owner.remove(index);1846 let owner_count = token.owner.len();18471848 // Burn the token completely if this was the last (only) owner1849 if owner_count == 0 {1850 <ReFungibleItemList<T>>::remove(collection_id, item_id);1851 <VariableMetaDataBasket<T>>::remove(collection_id, item_id);1852 } else {1853 <ReFungibleItemList<T>>::insert(collection_id, item_id, token);1854 }18551856 Ok(())1857 }18581859 fn burn_nft_item(collection: &CollectionHandle<T>, item_id: TokenId) -> DispatchResult {1860 let collection_id = collection.id;18611862 let item =1863 <NftItemList<T>>::get(collection_id, item_id).ok_or(Error::<T>::TokenNotFound)?;1864 Self::remove_token_index(collection, item_id, &item.owner)?;18651866 // update balance1867 let new_balance = <Balance<T>>::get(collection_id, item.owner.as_sub())1868 .checked_sub(1)1869 .ok_or(Error::<T>::NumOverflow)?;1870 <Balance<T>>::insert(collection_id, item.owner.as_sub(), new_balance);1871 <NftItemList<T>>::remove(collection_id, item_id);1872 <VariableMetaDataBasket<T>>::remove(collection_id, item_id);18731874 collection.log(ERC721Events::Transfer {1875 from: *item.owner.as_eth(),1876 to: H160::default(),1877 token_id: item_id.into(),1878 })?;1879 Self::deposit_event(RawEvent::ItemDestroyed(collection.id, item_id));1880 Ok(())1881 }18821883 fn burn_fungible_item(1884 owner: &T::CrossAccountId,1885 collection: &CollectionHandle<T>,1886 value: u128,1887 ) -> DispatchResult {1888 let collection_id = collection.id;18891890 let mut balance = <FungibleItemList<T>>::get(collection_id, owner.as_sub());1891 ensure!(balance.value >= value, Error::<T>::TokenValueNotEnough);18921893 // update balance1894 let new_balance = <Balance<T>>::get(collection_id, owner.as_sub())1895 .checked_sub(value)1896 .ok_or(Error::<T>::NumOverflow)?;1897 <Balance<T>>::insert(collection_id, owner.as_sub(), new_balance);18981899 if balance.value - value > 0 {1900 balance.value -= value;1901 <FungibleItemList<T>>::insert(collection_id, owner.as_sub(), balance);1902 } else {1903 <FungibleItemList<T>>::remove(collection_id, owner.as_sub());1904 }19051906 collection.log(ERC20Events::Transfer {1907 from: *owner.as_eth(),1908 to: H160::default(),1909 value: value.into(),1910 })?;1911 Ok(())1912 }19131914 pub fn get_collection(1915 collection_id: CollectionId,1916 ) -> Result<CollectionHandle<T>, sp_runtime::DispatchError> {1917 Ok(<CollectionHandle<T>>::get(collection_id).ok_or(Error::<T>::CollectionNotFound)?)1918 }19191920 fn check_owner_permissions(1921 target_collection: &CollectionHandle<T>,1922 subject: &T::AccountId,1923 ) -> DispatchResult {1924 ensure!(1925 *subject == target_collection.owner,1926 Error::<T>::NoPermission1927 );19281929 Ok(())1930 }19311932 fn is_owner_or_admin_permissions(1933 collection: &CollectionHandle<T>,1934 subject: &T::CrossAccountId,1935 ) -> Result<bool, DispatchError> {1936 collection.consume_sload()?;1937 Ok(*subject.as_sub() == collection.owner1938 || <AdminList<T>>::get(collection.id).contains(subject))1939 }19401941 fn check_owner_or_admin_permissions(1942 collection: &CollectionHandle<T>,1943 subject: &T::CrossAccountId,1944 ) -> DispatchResult {1945 ensure!(1946 Self::is_owner_or_admin_permissions(collection, subject)?,1947 Error::<T>::NoPermission1948 );19491950 Ok(())1951 }19521953 fn owned_amount(1954 subject: &T::CrossAccountId,1955 collection: &CollectionHandle<T>,1956 item_id: TokenId,1957 ) -> Result<Option<u128>, DispatchError> {1958 collection.consume_sload()?;1959 Ok(Self::owned_amount_unchecked(subject, collection, item_id))1960 }19611962 fn owned_amount_unchecked(1963 subject: &T::CrossAccountId,1964 target_collection: &CollectionHandle<T>,1965 item_id: TokenId,1966 ) -> Option<u128> {1967 let collection_id = target_collection.id;19681969 match target_collection.mode {1970 CollectionMode::NFT => {1971 (<NftItemList<T>>::get(collection_id, item_id)?.owner == *subject).then(|| 1)1972 }1973 CollectionMode::Fungible(_) => {1974 Some(<FungibleItemList<T>>::get(collection_id, &subject.as_sub()).value)1975 }1976 CollectionMode::ReFungible => <ReFungibleItemList<T>>::get(collection_id, item_id)?1977 .owner1978 .iter()1979 .find(|i| i.owner == *subject)1980 .map(|i| i.fraction),1981 CollectionMode::Invalid => None,1982 }1983 }19841985 fn is_item_owner(1986 subject: &T::CrossAccountId,1987 target_collection: &CollectionHandle<T>,1988 item_id: TokenId,1989 ) -> Result<bool, DispatchError> {1990 Ok(match target_collection.mode {1991 CollectionMode::Fungible(_) => true,1992 _ => Self::owned_amount(subject, target_collection, item_id)?.is_some(),1993 })1994 }19951996 fn check_white_list(1997 collection: &CollectionHandle<T>,1998 address: &T::CrossAccountId,1999 ) -> DispatchResult {2000 collection.consume_sload()?;2001 ensure!(2002 <WhiteList<T>>::contains_key(collection.id, address.as_sub()),2003 Error::<T>::AddresNotInWhiteList,2004 );2005 Ok(())2006 }20072008 /// Check if token exists. In case of Fungible, check if there is an entry for2009 /// the owner in fungible balances double map2010 fn token_exists(target_collection: &CollectionHandle<T>, item_id: TokenId) -> DispatchResult {2011 let collection_id = target_collection.id;2012 let exists = match target_collection.mode {2013 CollectionMode::NFT => <NftItemList<T>>::contains_key(collection_id, item_id),2014 CollectionMode::Fungible(_) => true,2015 CollectionMode::ReFungible => {2016 <ReFungibleItemList<T>>::contains_key(collection_id, item_id)2017 }2018 _ => false,2019 };20202021 ensure!(exists, Error::<T>::TokenNotFound);2022 Ok(())2023 }20242025 fn transfer_fungible(2026 collection: &CollectionHandle<T>,2027 value: u128,2028 owner: &T::CrossAccountId,2029 recipient: &T::CrossAccountId,2030 ) -> DispatchResult {2031 let collection_id = collection.id;20322033 collection.consume_sload()?;2034 collection.consume_sload()?;2035 let mut recipient_balance = <FungibleItemList<T>>::get(collection_id, recipient.as_sub());2036 let mut balance = <FungibleItemList<T>>::get(collection_id, owner.as_sub());20372038 recipient_balance.value = recipient_balance2039 .value2040 .checked_add(value)2041 .ok_or(Error::<T>::NumOverflow)?;2042 balance.value = balance2043 .value2044 .checked_sub(value)2045 .ok_or(Error::<T>::TokenValueTooLow)?;20462047 // update balanceOf2048 collection.consume_sstore()?;2049 collection.consume_sstore()?;2050 if balance.value != 0 {2051 <Balance<T>>::insert(collection_id, owner.as_sub(), balance.value);2052 } else {2053 <Balance<T>>::remove(collection_id, owner.as_sub());2054 }2055 <Balance<T>>::insert(collection_id, recipient.as_sub(), recipient_balance.value);20562057 // Reduce or remove sender2058 collection.consume_sstore()?;2059 collection.consume_sstore()?;2060 if balance.value != 0 {2061 <FungibleItemList<T>>::insert(collection_id, owner.as_sub(), balance);2062 } else {2063 <FungibleItemList<T>>::remove(collection_id, owner.as_sub());2064 }2065 <FungibleItemList<T>>::insert(collection_id, recipient.as_sub(), recipient_balance);20662067 collection.log(ERC20Events::Transfer {2068 from: *owner.as_eth(),2069 to: *recipient.as_eth(),2070 value: value.into(),2071 })?;2072 Self::deposit_event(RawEvent::Transfer(2073 collection.id,2074 1,2075 owner.clone(),2076 recipient.clone(),2077 value,2078 ));20792080 Ok(())2081 }20822083 fn transfer_refungible(2084 collection: &CollectionHandle<T>,2085 item_id: TokenId,2086 value: u128,2087 owner: T::CrossAccountId,2088 new_owner: T::CrossAccountId,2089 ) -> DispatchResult {2090 let collection_id = collection.id;2091 collection.consume_sload()?;2092 let full_item = <ReFungibleItemList<T>>::get(collection_id, item_id)2093 .ok_or(Error::<T>::TokenNotFound)?;20942095 let item = full_item2096 .owner2097 .iter()2098 .find(|i| i.owner == owner)2099 .ok_or(Error::<T>::TokenNotFound)?;2100 let amount = item.fraction;21012102 ensure!(amount >= value, Error::<T>::TokenValueTooLow);21032104 collection.consume_sload()?;2105 // update balance2106 let balance_old_owner = <Balance<T>>::get(collection_id, item.owner.as_sub())2107 .checked_sub(value)2108 .ok_or(Error::<T>::NumOverflow)?;2109 collection.consume_sstore()?;2110 <Balance<T>>::insert(collection_id, item.owner.as_sub(), balance_old_owner);21112112 collection.consume_sload()?;2113 let balance_new_owner = <Balance<T>>::get(collection_id, new_owner.as_sub())2114 .checked_add(value)2115 .ok_or(Error::<T>::NumOverflow)?;2116 collection.consume_sstore()?;2117 <Balance<T>>::insert(collection_id, new_owner.as_sub(), balance_new_owner);21182119 let old_owner = item.owner.clone();2120 let new_owner_has_account = full_item.owner.iter().any(|i| i.owner == new_owner);21212122 let mut new_full_item = full_item.clone();2123 // transfer2124 if amount == value && !new_owner_has_account {2125 // change owner2126 // new owner do not have account2127 new_full_item2128 .owner2129 .iter_mut()2130 .find(|i| i.owner == owner)2131 .expect("old owner does present in refungible")2132 .owner = new_owner.clone();2133 collection.consume_sstore()?;2134 <ReFungibleItemList<T>>::insert(collection_id, item_id, new_full_item);21352136 // update index collection2137 Self::move_token_index(collection, item_id, &old_owner, &new_owner)?;2138 } else {2139 new_full_item2140 .owner2141 .iter_mut()2142 .find(|i| i.owner == owner)2143 .expect("old owner does present in refungible")2144 .fraction -= value;21452146 // separate amount2147 if new_owner_has_account {2148 // new owner has account2149 new_full_item2150 .owner2151 .iter_mut()2152 .find(|i| i.owner == new_owner)2153 .expect("new owner has account")2154 .fraction += value;2155 } else {2156 // new owner do not have account2157 new_full_item.owner.push(Ownership {2158 owner: new_owner.clone(),2159 fraction: value,2160 });2161 Self::add_token_index(collection, item_id, &new_owner)?;2162 }21632164 collection.consume_sstore()?;2165 <ReFungibleItemList<T>>::insert(collection_id, item_id, new_full_item);2166 }21672168 Self::deposit_event(RawEvent::Transfer(2169 collection.id,2170 item_id,2171 owner,2172 new_owner,2173 amount,2174 ));21752176 Ok(())2177 }21782179 fn transfer_nft(2180 collection: &CollectionHandle<T>,2181 item_id: TokenId,2182 sender: T::CrossAccountId,2183 new_owner: T::CrossAccountId,2184 ) -> DispatchResult {2185 let collection_id = collection.id;2186 collection.consume_sload()?;2187 let mut item =2188 <NftItemList<T>>::get(collection_id, item_id).ok_or(Error::<T>::TokenNotFound)?;21892190 ensure!(sender == item.owner, Error::<T>::MustBeTokenOwner);21912192 collection.consume_sload()?;2193 // update balance2194 let balance_old_owner = <Balance<T>>::get(collection_id, item.owner.as_sub())2195 .checked_sub(1)2196 .ok_or(Error::<T>::NumOverflow)?;2197 collection.consume_sstore()?;2198 <Balance<T>>::insert(collection_id, item.owner.as_sub(), balance_old_owner);21992200 collection.consume_sload()?;2201 let balance_new_owner = <Balance<T>>::get(collection_id, new_owner.as_sub())2202 .checked_add(1)2203 .ok_or(Error::<T>::NumOverflow)?;2204 collection.consume_sstore()?;2205 <Balance<T>>::insert(collection_id, new_owner.as_sub(), balance_new_owner);22062207 // change owner2208 let old_owner = item.owner.clone();2209 item.owner = new_owner.clone();2210 collection.consume_sstore()?;2211 <NftItemList<T>>::insert(collection_id, item_id, item);22122213 // update index collection2214 Self::move_token_index(collection, item_id, &old_owner, &new_owner)?;22152216 collection.log(ERC721Events::Transfer {2217 from: *sender.as_eth(),2218 to: *new_owner.as_eth(),2219 token_id: item_id.into(),2220 })?;2221 Self::deposit_event(RawEvent::Transfer(2222 collection.id,2223 item_id,2224 sender,2225 new_owner,2226 1,2227 ));22282229 Ok(())2230 }22312232 fn set_re_fungible_variable_data(2233 collection: &CollectionHandle<T>,2234 item_id: TokenId,2235 data: Vec<u8>,2236 ) -> DispatchResult {2237 let collection_id = collection.id;2238 let mut item = <ReFungibleItemList<T>>::get(collection_id, item_id)2239 .ok_or(Error::<T>::TokenNotFound)?;22402241 item.variable_data = data;22422243 <ReFungibleItemList<T>>::insert(collection_id, item_id, item);22442245 Ok(())2246 }22472248 fn set_nft_variable_data(2249 collection: &CollectionHandle<T>,2250 item_id: TokenId,2251 data: Vec<u8>,2252 ) -> DispatchResult {2253 let collection_id = collection.id;2254 let mut item =2255 <NftItemList<T>>::get(collection_id, item_id).ok_or(Error::<T>::TokenNotFound)?;22562257 item.variable_data = data;22582259 <NftItemList<T>>::insert(collection_id, item_id, item);22602261 Ok(())2262 }22632264 #[allow(dead_code)]2265 fn init_collection(item: &Collection<T>) {2266 // check params2267 assert!(2268 item.decimal_points <= MAX_DECIMAL_POINTS,2269 "decimal_points parameter must be lower than MAX_DECIMAL_POINTS"2270 );2271 assert!(2272 item.name.len() <= 64,2273 "Collection name can not be longer than 63 char"2274 );2275 assert!(2276 item.name.len() <= 256,2277 "Collection description can not be longer than 255 char"2278 );2279 assert!(2280 item.token_prefix.len() <= 16,2281 "Token prefix can not be longer than 15 char"2282 );22832284 // Generate next collection ID2285 let next_id = CreatedCollectionCount::get().checked_add(1).unwrap();22862287 CreatedCollectionCount::put(next_id);2288 }22892290 #[allow(dead_code)]2291 fn init_nft_token(collection_id: CollectionId, item: &NftItemType<T::CrossAccountId>) {2292 let current_index = <ItemListIndex>::get(collection_id).checked_add(1).unwrap();22932294 Self::add_token_index(2295 &CollectionHandle::get(collection_id).unwrap(),2296 current_index,2297 &item.owner,2298 )2299 .unwrap();23002301 <ItemListIndex>::insert(collection_id, current_index);23022303 // Update balance2304 let new_balance = <Balance<T>>::get(collection_id, item.owner.as_sub())2305 .checked_add(1)2306 .unwrap();2307 <Balance<T>>::insert(collection_id, item.owner.as_sub(), new_balance);2308 }23092310 #[allow(dead_code)]2311 fn init_fungible_token(2312 collection_id: CollectionId,2313 owner: &T::CrossAccountId,2314 item: &FungibleItemType,2315 ) {2316 let current_index = <ItemListIndex>::get(collection_id).checked_add(1).unwrap();23172318 Self::add_token_index(2319 &CollectionHandle::get(collection_id).unwrap(),2320 current_index,2321 owner,2322 )2323 .unwrap();23242325 <ItemListIndex>::insert(collection_id, current_index);23262327 // Update balance2328 let new_balance = <Balance<T>>::get(collection_id, owner.as_sub())2329 .checked_add(item.value)2330 .unwrap();2331 <Balance<T>>::insert(collection_id, owner.as_sub(), new_balance);2332 }23332334 #[allow(dead_code)]2335 fn init_refungible_token(2336 collection_id: CollectionId,2337 item: &ReFungibleItemType<T::CrossAccountId>,2338 ) {2339 let current_index = <ItemListIndex>::get(collection_id).checked_add(1).unwrap();23402341 let value = item.owner.first().unwrap().fraction;2342 let owner = item.owner.first().unwrap().owner.clone();23432344 Self::add_token_index(2345 &CollectionHandle::get(collection_id).unwrap(),2346 current_index,2347 &owner,2348 )2349 .unwrap();23502351 <ItemListIndex>::insert(collection_id, current_index);23522353 // Update balance2354 let new_balance = <Balance<T>>::get(collection_id, &owner.as_sub())2355 .checked_add(value)2356 .unwrap();2357 <Balance<T>>::insert(collection_id, owner.as_sub(), new_balance);2358 }23592360 fn add_token_index(2361 collection: &CollectionHandle<T>,2362 item_index: TokenId,2363 owner: &T::CrossAccountId,2364 ) -> DispatchResult {2365 // add to account limit2366 collection.consume_sload()?;2367 if <AccountItemCount<T>>::contains_key(owner.as_sub()) {2368 // bound Owned tokens by a single address2369 collection.consume_sload()?;2370 let count = <AccountItemCount<T>>::get(owner.as_sub());2371 ensure!(2372 count < ACCOUNT_TOKEN_OWNERSHIP_LIMIT,2373 Error::<T>::AddressOwnershipLimitExceeded2374 );23752376 collection.consume_sstore()?;2377 <AccountItemCount<T>>::insert(2378 owner.as_sub(),2379 count.checked_add(1).ok_or(Error::<T>::NumOverflow)?,2380 );2381 } else {2382 collection.consume_sstore()?;2383 <AccountItemCount<T>>::insert(owner.as_sub(), 1);2384 }23852386 collection.consume_sload()?;2387 let list_exists = <AddressTokens<T>>::contains_key(collection.id, owner.as_sub());2388 if list_exists {2389 collection.consume_sload()?;2390 let mut list = <AddressTokens<T>>::get(collection.id, owner.as_sub());2391 let item_contains = list.contains(&item_index.clone());23922393 if !item_contains {2394 list.push(item_index);2395 }23962397 collection.consume_sstore()?;2398 <AddressTokens<T>>::insert(collection.id, owner.as_sub(), list);2399 } else {2400 let itm = vec![item_index];2401 collection.consume_sstore()?;2402 <AddressTokens<T>>::insert(collection.id, owner.as_sub(), itm);2403 }24042405 Ok(())2406 }24072408 fn remove_token_index(2409 collection: &CollectionHandle<T>,2410 item_index: TokenId,2411 owner: &T::CrossAccountId,2412 ) -> DispatchResult {2413 // update counter2414 collection.consume_sload()?;2415 collection.consume_sstore()?;2416 <AccountItemCount<T>>::insert(2417 owner.as_sub(),2418 <AccountItemCount<T>>::get(owner.as_sub())2419 .checked_sub(1)2420 .ok_or(Error::<T>::NumOverflow)?,2421 );24222423 collection.consume_sload()?;2424 let list_exists = <AddressTokens<T>>::contains_key(collection.id, owner.as_sub());2425 if list_exists {2426 collection.consume_sload()?;2427 let mut list = <AddressTokens<T>>::get(collection.id, owner.as_sub());2428 let item_contains = list.contains(&item_index.clone());24292430 if item_contains {2431 list.retain(|&item| item != item_index);2432 collection.consume_sstore()?;2433 <AddressTokens<T>>::insert(collection.id, owner.as_sub(), list);2434 }2435 }24362437 Ok(())2438 }24392440 fn move_token_index(2441 collection: &CollectionHandle<T>,2442 item_index: TokenId,2443 old_owner: &T::CrossAccountId,2444 new_owner: &T::CrossAccountId,2445 ) -> DispatchResult {2446 Self::remove_token_index(collection, item_index, old_owner)?;2447 Self::add_token_index(collection, item_index, new_owner)?;24482449 Ok(())2450 }2451}24522453sp_api::decl_runtime_apis! {2454 pub trait NftApi {2455 /// Used for ethereum integration2456 fn eth_contract_code(account: H160) -> Option<Vec<u8>>;2457 }2458}