difftreelog
feat support approve from evm
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"]78#![cfg_attr(not(feature = "std"), no_std)]910#[cfg(feature = "std")]11pub use serde::*;1213use core::ops::{Deref, DerefMut};14use codec::{Decode, Encode};15pub use frame_support::{16 construct_runtime, decl_event, decl_module, decl_storage, decl_error,17 dispatch::DispatchResult,18 ensure, fail, parameter_types,19 traits::{20 Currency, ExistenceRequirement, Get, Imbalance, KeyOwnerProofSystem, OnUnbalanced,21 Randomness, IsSubType, WithdrawReasons,22 },23 weights::{24 constants::{BlockExecutionWeight, ExtrinsicBaseWeight, RocksDbWeight, WEIGHT_PER_SECOND},25 DispatchInfo, GetDispatchInfo, IdentityFee, Pays, PostDispatchInfo, Weight,26 WeightToFeePolynomial, DispatchClass,27 },28 StorageValue,29 transactional,30};3132use frame_system::{self as system, ensure_signed, ensure_root};33use sp_core::{H160, H256};34use sp_runtime::sp_std::prelude::Vec;35use sp_runtime::{36 traits::{37 Hash, DispatchInfoOf, Dispatchable, PostDispatchInfoOf, Saturating, SaturatedConversion, SignedExtension, Zero,38 },39 transaction_validity::{40 TransactionPriority, InvalidTransaction, TransactionValidity, TransactionValidityError, ValidTransaction,41 },42 FixedPointOperand, FixedU128,43};44use sp_runtime::traits::StaticLookup;45use pallet_contracts::chain_extension::UncheckedFrom;46use pallet_evm::AddressMapping;47use pallet_transaction_payment::OnChargeTransaction;4849#[cfg(test)]50mod mock;5152#[cfg(test)]53mod tests;5455mod default_weights;56mod eth;5758pub use eth::account::*;5960pub const MAX_DECIMAL_POINTS: DecimalPoints = 30;61pub const MAX_REFUNGIBLE_PIECES: u128 = 1_000_000_000_000_000_000_000;62pub const MAX_SPONSOR_TIMEOUT: u32 = 10_368_000;63pub const MAX_TOKEN_OWNERSHIP: u32 = 10_000_000;6465// Structs66// #region6768pub type CollectionId = u32;69pub type TokenId = u32;70pub type DecimalPoints = u8;7172#[derive(Encode, Decode, Eq, Debug, Clone, PartialEq)]73#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]74pub enum CollectionMode {75 Invalid,76 NFT,77 // decimal points78 Fungible(DecimalPoints),79 ReFungible,80}8182impl Default for CollectionMode {83 fn default() -> Self {84 Self::Invalid85 }86}8788impl Into<u8> for CollectionMode {89 fn into(self) -> u8 {90 match self {91 CollectionMode::Invalid => 0,92 CollectionMode::NFT => 1,93 CollectionMode::Fungible(_) => 2,94 CollectionMode::ReFungible => 3,95 }96 }97}9899#[derive(Encode, Decode, Eq, Debug, Clone, PartialEq)]100#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]101pub enum AccessMode {102 Normal,103 WhiteList,104}105impl Default for AccessMode {106 fn default() -> Self {107 Self::Normal108 }109}110111#[derive(Encode, Decode, Eq, Debug, Clone, PartialEq)]112#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]113pub enum SchemaVersion {114 ImageURL,115 Unique,116}117impl Default for SchemaVersion {118 fn default() -> Self {119 Self::ImageURL120 }121}122123#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]124#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]125pub struct Ownership<AccountId> {126 pub owner: AccountId,127 pub fraction: u128,128}129130#[derive(Encode, Decode, Debug, Clone, PartialEq)]131#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]132pub enum SponsorshipState<AccountId> {133 /// The fees are applied to the transaction sender134 Disabled,135 Unconfirmed(AccountId),136 /// Transactions are sponsored by specified account137 Confirmed(AccountId),138}139140impl<AccountId> SponsorshipState<AccountId> {141 fn sponsor(&self) -> Option<&AccountId> {142 match self {143 Self::Confirmed(sponsor) => Some(sponsor),144 _ => None,145 }146 }147148 fn pending_sponsor(&self) -> Option<&AccountId> {149 match self {150 Self::Unconfirmed(sponsor) | Self::Confirmed(sponsor) => Some(sponsor),151 _ => None,152 }153 }154155 fn confirmed(&self) -> bool {156 matches!(self, Self::Confirmed(_))157 }158}159160impl<T> Default for SponsorshipState<T> {161 fn default() -> Self {162 Self::Disabled163 }164}165166#[derive(Encode, Decode, Clone, PartialEq)]167#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]168pub struct Collection<T: Config> {169 pub owner: T::CrossAccountId,170 pub mode: CollectionMode,171 pub access: AccessMode,172 pub decimal_points: DecimalPoints,173 pub name: Vec<u16>, // 64 include null escape char174 pub description: Vec<u16>, // 256 include null escape char175 pub token_prefix: Vec<u8>, // 16 include null escape char176 pub mint_mode: bool,177 pub offchain_schema: Vec<u8>,178 pub schema_version: SchemaVersion,179 pub sponsorship: SponsorshipState<T::AccountId>,180 pub limits: CollectionLimits<T::BlockNumber>, // Collection private restrictions 181 pub variable_on_chain_schema: Vec<u8>, //182 pub const_on_chain_schema: Vec<u8>, //183}184185pub struct CollectionHandle<T: Config> {186 pub id: CollectionId,187 collection: Collection<T>,188}189190impl<T: Config> Deref for CollectionHandle<T> {191 type Target = Collection<T>;192193 fn deref(&self) -> &Self::Target {194 &self.collection195 }196}197198impl<T: Config> DerefMut for CollectionHandle<T> {199 fn deref_mut(&mut self) -> &mut Self::Target {200 &mut self.collection201 }202}203204#[derive(Encode, Decode, Debug, Clone, PartialEq)]205#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]206pub struct NftItemType<AccountId> {207 pub owner: AccountId,208 pub const_data: Vec<u8>,209 pub variable_data: Vec<u8>,210}211212#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]213#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]214pub struct FungibleItemType {215 pub value: u128,216}217218#[derive(Encode, Decode, Debug, Clone, PartialEq)]219#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]220pub struct ReFungibleItemType<AccountId> {221 pub owner: Vec<Ownership<AccountId>>,222 pub const_data: Vec<u8>,223 pub variable_data: Vec<u8>,224}225226// #[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]227// #[cfg_attr(feature = "std", derive(Serialize, Deserialize))]228// pub struct VestingItem<AccountId, Moment> {229// pub sender: AccountId,230// pub recipient: AccountId,231// pub collection_id: CollectionId,232// pub item_id: TokenId,233// pub amount: u64,234// pub vesting_date: Moment,235// }236237#[derive(Encode, Decode, Debug, Clone, PartialEq)]238#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]239pub struct CollectionLimits<BlockNumber: Encode + Decode> {240 pub account_token_ownership_limit: u32,241 pub sponsored_data_size: u32,242 /// None - setVariableMetadata is not sponsored243 /// Some(v) - setVariableMetadata is sponsored 244 /// if there is v block between txs245 pub sponsored_data_rate_limit: Option<BlockNumber>,246 pub token_limit: u32,247248 // Timeouts for item types in passed blocks249 pub sponsor_transfer_timeout: u32,250 pub owner_can_transfer: bool,251 pub owner_can_destroy: bool,252}253254impl<BlockNumber: Encode + Decode> Default for CollectionLimits<BlockNumber> {255 fn default() -> Self {256 Self { 257 account_token_ownership_limit: 10_000_000, 258 token_limit: u32::max_value(),259 sponsored_data_size: u32::MAX, 260 sponsored_data_rate_limit: None,261 sponsor_transfer_timeout: 14400,262 owner_can_transfer: true,263 owner_can_destroy: true264 }265 }266}267268#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]269#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]270pub struct ChainLimits {271 pub collection_numbers_limit: u32,272 pub account_token_ownership_limit: u32,273 pub collections_admins_limit: u64,274 pub custom_data_limit: u32,275276 // Timeouts for item types in passed blocks277 pub nft_sponsor_transfer_timeout: u32,278 pub fungible_sponsor_transfer_timeout: u32,279 pub refungible_sponsor_transfer_timeout: u32,280281 // Schema limits282 pub offchain_schema_limit: u32,283 pub variable_on_chain_schema_limit: u32,284 pub const_on_chain_schema_limit: u32,285}286287pub trait WeightInfo {288 fn create_collection() -> Weight;289 fn destroy_collection() -> Weight;290 fn add_to_white_list() -> Weight;291 fn remove_from_white_list() -> Weight;292 fn set_public_access_mode() -> Weight;293 fn set_mint_permission() -> Weight;294 fn change_collection_owner() -> Weight;295 fn add_collection_admin() -> Weight;296 fn remove_collection_admin() -> Weight;297 fn set_collection_sponsor() -> Weight;298 fn confirm_sponsorship() -> Weight;299 fn remove_collection_sponsor() -> Weight;300 fn create_item(s: usize) -> Weight;301 fn burn_item() -> Weight;302 fn transfer() -> Weight;303 fn approve() -> Weight;304 fn transfer_from() -> Weight;305 fn set_offchain_schema() -> Weight;306 fn set_const_on_chain_schema() -> Weight;307 fn set_variable_on_chain_schema() -> Weight;308 fn set_variable_meta_data() -> Weight;309 fn enable_contract_sponsoring() -> Weight;310 fn set_schema_version() -> Weight;311 fn set_chain_limits() -> Weight;312 fn set_contract_sponsoring_rate_limit() -> Weight;313 fn set_variable_meta_data_sponsoring_rate_limit() -> Weight;314 fn toggle_contract_white_list() -> Weight;315 fn add_to_contract_white_list() -> Weight;316 fn remove_from_contract_white_list() -> Weight;317 fn set_collection_limits() -> Weight;318}319320#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]321#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]322pub struct CreateNftData {323 pub const_data: Vec<u8>,324 pub variable_data: Vec<u8>,325}326327#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]328#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]329pub struct CreateFungibleData {330 pub value: u128,331}332333#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]334#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]335pub struct CreateReFungibleData {336 pub const_data: Vec<u8>,337 pub variable_data: Vec<u8>,338 pub pieces: u128,339}340341#[derive(Encode, Decode, Debug, Clone, PartialEq)]342#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]343pub enum CreateItemData {344 NFT(CreateNftData),345 Fungible(CreateFungibleData),346 ReFungible(CreateReFungibleData),347}348349impl CreateItemData {350 pub fn len(&self) -> usize {351 let len = match self {352 CreateItemData::NFT(data) => data.variable_data.len() + data.const_data.len(),353 CreateItemData::ReFungible(data) => data.variable_data.len() + data.const_data.len(),354 _ => 0355 };356 357 return len;358 }359}360361impl From<CreateNftData> for CreateItemData {362 fn from(item: CreateNftData) -> Self {363 CreateItemData::NFT(item)364 }365}366367impl From<CreateReFungibleData> for CreateItemData {368 fn from(item: CreateReFungibleData) -> Self {369 CreateItemData::ReFungible(item)370 }371}372373impl From<CreateFungibleData> for CreateItemData {374 fn from(item: CreateFungibleData) -> Self {375 CreateItemData::Fungible(item)376 }377}378379380decl_error! {381 /// Error for non-fungible-token module.382 pub enum Error for Module<T: Config> {383 /// Total collections bound exceeded.384 TotalCollectionsLimitExceeded,385 /// Decimal_points parameter must be lower than MAX_DECIMAL_POINTS constant, currently it is 30.386 CollectionDecimalPointLimitExceeded, 387 /// Collection name can not be longer than 63 char.388 CollectionNameLimitExceeded, 389 /// Collection description can not be longer than 255 char.390 CollectionDescriptionLimitExceeded, 391 /// Token prefix can not be longer than 15 char.392 CollectionTokenPrefixLimitExceeded,393 /// This collection does not exist.394 CollectionNotFound,395 /// Item not exists.396 TokenNotFound,397 /// Admin not found398 AdminNotFound,399 /// Arithmetic calculation overflow.400 NumOverflow, 401 /// Account already has admin role.402 AlreadyAdmin, 403 /// You do not own this collection.404 NoPermission,405 /// This address is not set as sponsor, use setCollectionSponsor first.406 ConfirmUnsetSponsorFail,407 /// Collection is not in mint mode.408 PublicMintingNotAllowed,409 /// Sender parameter and item owner must be equal.410 MustBeTokenOwner,411 /// Item balance not enough.412 TokenValueTooLow,413 /// Size of item is too large.414 NftSizeLimitExceeded,415 /// No approve found416 ApproveNotFound,417 /// Requested value more than approved.418 TokenValueNotEnough,419 /// Only approved addresses can call this method.420 ApproveRequired,421 /// Address is not in white list.422 AddresNotInWhiteList,423 /// Number of collection admins bound exceeded.424 CollectionAdminsLimitExceeded,425 /// Owned tokens by a single address bound exceeded.426 AddressOwnershipLimitExceeded,427 /// Length of items properties must be greater than 0.428 EmptyArgument,429 /// const_data exceeded data limit.430 TokenConstDataLimitExceeded,431 /// variable_data exceeded data limit.432 TokenVariableDataLimitExceeded,433 /// Not NFT item data used to mint in NFT collection.434 NotNftDataUsedToMintNftCollectionToken,435 /// Not Fungible item data used to mint in Fungible collection.436 NotFungibleDataUsedToMintFungibleCollectionToken,437 /// Not Re Fungible item data used to mint in Re Fungible collection.438 NotReFungibleDataUsedToMintReFungibleCollectionToken,439 /// Unexpected collection type.440 UnexpectedCollectionType,441 /// Can't store metadata in fungible tokens.442 CantStoreMetadataInFungibleTokens,443 /// Collection token limit exceeded444 CollectionTokenLimitExceeded,445 /// Account token limit exceeded per collection446 AccountTokenLimitExceeded,447 /// Collection limit bounds per collection exceeded448 CollectionLimitBoundsExceeded,449 /// Tried to enable permissions which are only permitted to be disabled450 OwnerPermissionsCantBeReverted,451 /// Schema data size limit bound exceeded452 SchemaDataLimitExceeded,453 /// Maximum refungibility exceeded454 WrongRefungiblePieces,455 /// createRefungible should be called with one owner456 BadCreateRefungibleCall,457 }458}459460pub trait Config: system::Config + Sized + pallet_transaction_payment::Config + pallet_contracts::Config {461 type Event: From<Event<Self>> + Into<<Self as system::Config>::Event>;462463 /// Weight information for extrinsics in this pallet.464 type WeightInfo: WeightInfo;465466 type EvmAddressMapping: pallet_evm::AddressMapping<Self::AccountId>;467 type EvmBackwardsAddressMapping: EvmBackwardsAddressMapping<Self::AccountId>;468 type EvmWithdrawOrigin: pallet_evm::EnsureAddressOrigin<Self::Origin, Success = Self::AccountId>;469470 type CrossAccountId: CrossAccountId<Self::AccountId>;471 type Currency: Currency<Self::AccountId>;472 type CollectionCreationPrice: Get<<<Self as Config>::Currency as Currency<Self::AccountId>>::Balance>;473 type TreasuryAccountId: Get<Self::AccountId>;474}475476#[cfg(feature = "runtime-benchmarks")]477mod benchmarking;478479// #endregion480481// # Used definitions482//483// ## User control levels484//485// chain-controlled - key is uncontrolled by user486// i.e autoincrementing index487// can use non-cryptographic hash488// real - key is controlled by user489// but it is hard to generate enough colliding values, i.e owner of signed txs490// can use non-cryptographic hash491// controlled - key is completly controlled by users492// i.e maps with mutable keys493// should use cryptographic hash494//495// ## User control level downgrade reasons496//497// ?1 - chain-controlled -> controlled498// collections/tokens can be destroyed, resulting in massive holes499// ?2 - chain-controlled -> controlled500// same as ?1, but can be only added, resulting in easier exploitation501// ?3 - real -> controlled502// no confirmation required, so addresses can be easily generated503decl_storage! {504 trait Store for Module<T: Config> as Nft {505506 //#region Private members507 /// Id of next collection508 CreatedCollectionCount: u32;509 /// Used for migrations510 ChainVersion: u64;511 /// Id of last collection token512 /// Collection id (controlled?1)513 ItemListIndex: map hasher(blake2_128_concat) CollectionId => TokenId;514 //#endregion515516 //#region Chain limits struct517 pub ChainLimit get(fn chain_limit) config(): ChainLimits;518 //#endregion519520 //#region Bound counters521 /// Amount of collections destroyed, used for total amount tracking with522 /// CreatedCollectionCount523 DestroyedCollectionCount: u32;524 /// Total amount of account owned tokens (NFTs + RFTs + unique fungibles)525 /// Account id (real)526 pub AccountItemCount get(fn account_item_count): map hasher(twox_64_concat) T::AccountId => u32;527 //#endregion528529 //#region Basic collections530 /// Collection info531 /// Collection id (controlled?1)532 pub CollectionById get(fn collection_id) config(): map hasher(blake2_128_concat) CollectionId => Option<Collection<T>> = None;533 /// List of collection admins534 /// Collection id (controlled?2)535 pub AdminList get(fn admin_list_collection): map hasher(blake2_128_concat) CollectionId => Vec<T::CrossAccountId>;536 /// Whitelisted collection users537 /// Collection id (controlled?2), user id (controlled?3)538 pub WhiteList get(fn white_list): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) T::AccountId => bool;539 //#endregion540541 /// How many of collection items user have542 /// Collection id (controlled?2), account id (real)543 pub Balance get(fn balance_count): double_map hasher(blake2_128_concat) CollectionId, hasher(twox_64_concat) T::AccountId => u128;544545 /// Amount of items which spender can transfer out of owners account (via transferFrom)546 /// Collection id (controlled?2), (token id (controlled ?2) + owner account id (real) + spender account id (controlled?3))547 /// TODO: Off chain worker should remove from this map when token gets removed548 pub Allowances get(fn approved): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) (TokenId, T::AccountId, T::AccountId) => u128;549550 //#region Item collections551 /// Collection id (controlled?2), token id (controlled?1)552 pub NftItemList get(fn nft_item_id) config(): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<NftItemType<T::CrossAccountId>>;553 /// Collection id (controlled?2), owner (controlled?2)554 pub FungibleItemList get(fn fungible_item_id) config(): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) T::AccountId => FungibleItemType;555 /// Collection id (controlled?2), token id (controlled?1)556 pub ReFungibleItemList get(fn refungible_item_id) config(): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<ReFungibleItemType<T::CrossAccountId>>;557 //#endregion558559 //#region Index list560 /// Collection id (controlled?2), tokens owner (controlled?2)561 pub AddressTokens get(fn address_tokens): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) T::AccountId => Vec<TokenId>;562 //#endregion563564 //#region Tokens transfer rate limit baskets565 /// (Collection id (controlled?2), who created (real))566 /// TODO: Off chain worker should remove from this map when collection gets removed567 pub CreateItemBasket get(fn create_item_basket): map hasher(blake2_128_concat) (CollectionId, T::AccountId) => T::BlockNumber;568 /// Collection id (controlled?2), token id (controlled?2)569 pub NftTransferBasket get(fn nft_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => T::BlockNumber;570 /// Collection id (controlled?2), owning user (real)571 pub FungibleTransferBasket get(fn fungible_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(twox_64_concat) T::AccountId => T::BlockNumber;572 /// Collection id (controlled?2), token id (controlled?2)573 pub ReFungibleTransferBasket get(fn refungible_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => T::BlockNumber;574 //#endregion575576 /// Variable metadata sponsoring577 /// Collection id (controlled?2), token id (controlled?2)578 pub VariableMetaDataBasket get(fn variable_meta_data_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<T::BlockNumber> = None;579 580 //#region Contract Sponsorship and Ownership581 /// Contract address (real)582 pub ContractOwner get(fn contract_owner): map hasher(twox_64_concat) T::AccountId => Option<T::AccountId>;583 /// Contract address (real)584 pub ContractSelfSponsoring get(fn contract_self_sponsoring): map hasher(twox_64_concat) T::AccountId => bool;585 /// (Contract address(real), caller (real))586 pub ContractSponsorBasket get(fn contract_sponsor_basket): map hasher(twox_64_concat) (T::AccountId, T::AccountId) => T::BlockNumber;587 /// Contract address (real)588 pub ContractSponsoringRateLimit get(fn contract_sponsoring_rate_limit): map hasher(twox_64_concat) T::AccountId => T::BlockNumber;589 /// Contract address (real)590 pub ContractWhiteListEnabled get(fn contract_white_list_enabled): map hasher(twox_64_concat) T::AccountId => bool; 591 /// Contract address (real) => Whitelisted user (controlled?3)592 pub ContractWhiteList get(fn contract_white_list): double_map hasher(twox_64_concat) T::AccountId, hasher(blake2_128_concat) T::AccountId => bool; 593 //#endregion594 }595 add_extra_genesis {596 build(|config: &GenesisConfig<T>| {597 // Modification of storage598 for (_num, _c) in &config.collection_id {599 <Module<T>>::init_collection(_c);600 }601602 for (_num, _c, _i) in &config.nft_item_id {603 <Module<T>>::init_nft_token(*_c, _i);604 }605606 for (collection_id, account_id, fungible_item) in &config.fungible_item_id {607 <Module<T>>::init_fungible_token(*collection_id, account_id, fungible_item);608 }609610 for (_num, _c, _i) in &config.refungible_item_id {611 <Module<T>>::init_refungible_token(*_c, _i);612 }613 })614 }615}616617decl_event!(618 pub enum Event<T>619 where620 CrossAccountId = <T as Config>::CrossAccountId,621 {622 /// New collection was created623 /// 624 /// # Arguments625 /// 626 /// * collection_id: Globally unique identifier of newly created collection.627 /// 628 /// * mode: [CollectionMode] converted into u8.629 /// 630 /// * account_id: Collection owner.631 CollectionCreated(CollectionId, u8, CrossAccountId),632633 /// New item was created.634 /// 635 /// # Arguments636 /// 637 /// * collection_id: Id of the collection where item was created.638 /// 639 /// * item_id: Id of an item. Unique within the collection.640 ///641 /// * recipient: Owner of newly created item 642 ItemCreated(CollectionId, TokenId, CrossAccountId),643644 /// Collection item was burned.645 /// 646 /// # Arguments647 /// 648 /// collection_id.649 /// 650 /// item_id: Identifier of burned NFT.651 ItemDestroyed(CollectionId, TokenId),652653 /// Item was transferred654 ///655 /// * collection_id: Id of collection to which item is belong656 ///657 /// * item_id: Id of an item658 ///659 /// * sender: Original owner of item660 ///661 /// * recipient: New owner of item662 ///663 /// * amount: Always 1 for NFT664 Transfer(CollectionId, TokenId, CrossAccountId, CrossAccountId, u128),665666 /// * collection_id667 ///668 /// * item_id669 ///670 /// * sender671 ///672 /// * spender673 ///674 /// * amount675 Approved(CollectionId, TokenId, CrossAccountId, CrossAccountId, u128),676 }677);678679decl_module! {680 pub struct Module<T: Config> for enum Call 681 where 682 origin: T::Origin683 {684 fn deposit_event() = default;685 type Error = Error<T>;686687 fn on_initialize(now: T::BlockNumber) -> Weight {688 0689 }690691 /// 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.692 /// 693 /// # Permissions694 /// 695 /// * Anyone.696 /// 697 /// # Arguments698 /// 699 /// * collection_name: UTF-16 string with collection name (limit 64 characters), will be stored as zero-terminated.700 /// 701 /// * collection_description: UTF-16 string with collection description (limit 256 characters), will be stored as zero-terminated.702 /// 703 /// * token_prefix: UTF-8 string with token prefix.704 /// 705 /// * mode: [CollectionMode] collection type and type dependent data.706 // returns collection ID707 #[weight = <T as Config>::WeightInfo::create_collection()]708 #[transactional]709 pub fn create_collection(origin,710 collection_name: Vec<u16>,711 collection_description: Vec<u16>,712 token_prefix: Vec<u8>,713 mode: CollectionMode) -> DispatchResult {714715 // Anyone can create a collection716 let who = T::CrossAccountId::from_sub(ensure_signed(origin)?);717718 // Take a (non-refundable) deposit of collection creation719 let mut imbalance = <<<T as Config>::Currency as Currency<T::AccountId>>::PositiveImbalance>::zero();720 imbalance.subsume(<<T as Config>::Currency as Currency<T::AccountId>>::deposit_creating(721 &T::TreasuryAccountId::get(),722 T::CollectionCreationPrice::get(),723 ));724 <T as Config>::Currency::settle(725 who.as_sub(),726 imbalance,727 WithdrawReasons::TRANSFER,728 ExistenceRequirement::KeepAlive,729 ).map_err(|_| Error::<T>::NoPermission)?;730731 let decimal_points = match mode {732 CollectionMode::Fungible(points) => points,733 _ => 0734 };735736 let chain_limit = ChainLimit::get();737738 let created_count = CreatedCollectionCount::get();739 let destroyed_count = DestroyedCollectionCount::get();740741 // bound Total number of collections742 ensure!(created_count - destroyed_count < chain_limit.collection_numbers_limit, Error::<T>::TotalCollectionsLimitExceeded);743744 // check params745 ensure!(decimal_points <= MAX_DECIMAL_POINTS, Error::<T>::CollectionDecimalPointLimitExceeded);746 ensure!(collection_name.len() <= 64, Error::<T>::CollectionNameLimitExceeded);747 ensure!(collection_description.len() <= 256, Error::<T>::CollectionDescriptionLimitExceeded);748 ensure!(token_prefix.len() <= 16, Error::<T>::CollectionTokenPrefixLimitExceeded);749750 // Generate next collection ID751 let next_id = created_count752 .checked_add(1)753 .ok_or(Error::<T>::NumOverflow)?;754755 CreatedCollectionCount::put(next_id);756757 let limits = CollectionLimits {758 sponsored_data_size: chain_limit.custom_data_limit,759 ..Default::default()760 };761762 // Create new collection763 let new_collection = Collection {764 owner: who.clone(),765 name: collection_name,766 mode: mode.clone(),767 mint_mode: false,768 access: AccessMode::Normal,769 description: collection_description,770 decimal_points: decimal_points,771 token_prefix: token_prefix,772 offchain_schema: Vec::new(),773 schema_version: SchemaVersion::ImageURL,774 sponsorship: SponsorshipState::Disabled,775 variable_on_chain_schema: Vec::new(),776 const_on_chain_schema: Vec::new(),777 limits,778 };779780 // Add new collection to map781 <CollectionById<T>>::insert(next_id, new_collection);782783 // call event784 Self::deposit_event(RawEvent::CollectionCreated(next_id, mode.into(), who));785786 Ok(())787 }788789 /// **DANGEROUS**: Destroys collection and all NFTs within this collection. Users irrecoverably lose their assets and may lose real money.790 /// 791 /// # Permissions792 /// 793 /// * Collection Owner.794 /// 795 /// # Arguments796 /// 797 /// * collection_id: collection to destroy.798 #[weight = <T as Config>::WeightInfo::destroy_collection()]799 #[transactional]800 pub fn destroy_collection(origin, collection_id: CollectionId) -> DispatchResult {801802 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);803 let collection = Self::get_collection(collection_id)?;804 Self::check_owner_permissions(&collection, sender)?;805 if !collection.limits.owner_can_destroy {806 fail!(Error::<T>::NoPermission);807 }808809 <AddressTokens<T>>::remove_prefix(collection_id);810 <Allowances<T>>::remove_prefix(collection_id);811 <Balance<T>>::remove_prefix(collection_id);812 <ItemListIndex>::remove(collection_id);813 <AdminList<T>>::remove(collection_id);814 <CollectionById<T>>::remove(collection_id);815 <WhiteList<T>>::remove_prefix(collection_id);816817 <NftItemList<T>>::remove_prefix(collection_id);818 <FungibleItemList<T>>::remove_prefix(collection_id);819 <ReFungibleItemList<T>>::remove_prefix(collection_id);820821 <NftTransferBasket<T>>::remove_prefix(collection_id);822 <FungibleTransferBasket<T>>::remove_prefix(collection_id);823 <ReFungibleTransferBasket<T>>::remove_prefix(collection_id);824825 <VariableMetaDataBasket<T>>::remove_prefix(collection_id);826827 DestroyedCollectionCount::put(DestroyedCollectionCount::get()828 .checked_add(1)829 .ok_or(Error::<T>::NumOverflow)?);830831 Ok(())832 }833834 /// Add an address to white list.835 /// 836 /// # Permissions837 /// 838 /// * Collection Owner839 /// * Collection Admin840 /// 841 /// # Arguments842 /// 843 /// * collection_id.844 /// 845 /// * address.846 #[weight = <T as Config>::WeightInfo::add_to_white_list()]847 #[transactional]848 pub fn add_to_white_list(origin, collection_id: CollectionId, address: T::CrossAccountId) -> DispatchResult{849850 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);851 let collection = Self::get_collection(collection_id)?;852 Self::check_owner_or_admin_permissions(&collection, sender)?;853854 <WhiteList<T>>::insert(collection_id, address.as_sub(), true);855 856 Ok(())857 }858859 /// Remove an address from white list.860 /// 861 /// # Permissions862 /// 863 /// * Collection Owner864 /// * Collection Admin865 /// 866 /// # Arguments867 /// 868 /// * collection_id.869 /// 870 /// * address.871 #[weight = <T as Config>::WeightInfo::remove_from_white_list()]872 #[transactional]873 pub fn remove_from_white_list(origin, collection_id: CollectionId, address: T::CrossAccountId) -> DispatchResult{874875 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);876 let collection = Self::get_collection(collection_id)?;877 Self::check_owner_or_admin_permissions(&collection, sender)?;878879 <WhiteList<T>>::remove(collection_id, address.as_sub());880881 Ok(())882 }883884 /// Toggle between normal and white list access for the methods with access for `Anyone`.885 /// 886 /// # Permissions887 /// 888 /// * Collection Owner.889 /// 890 /// # Arguments891 /// 892 /// * collection_id.893 /// 894 /// * mode: [AccessMode]895 #[weight = <T as Config>::WeightInfo::set_public_access_mode()]896 #[transactional]897 pub fn set_public_access_mode(origin, collection_id: CollectionId, mode: AccessMode) -> DispatchResult898 {899 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);900901 let mut target_collection = Self::get_collection(collection_id)?;902 Self::check_owner_permissions(&target_collection, sender)?;903 target_collection.access = mode;904 Self::save_collection(target_collection);905906 Ok(())907 }908909 /// Allows Anyone to create tokens if:910 /// * White List is enabled, and911 /// * Address is added to white list, and912 /// * This method was called with True parameter913 /// 914 /// # Permissions915 /// * Collection Owner916 ///917 /// # Arguments918 /// 919 /// * collection_id.920 /// 921 /// * mint_permission: Boolean parameter. If True, allows minting to Anyone with conditions above.922 #[weight = <T as Config>::WeightInfo::set_mint_permission()]923 #[transactional]924 pub fn set_mint_permission(origin, collection_id: CollectionId, mint_permission: bool) -> DispatchResult925 {926 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);927928 let mut target_collection = Self::get_collection(collection_id)?;929 Self::check_owner_permissions(&target_collection, sender)?;930 target_collection.mint_mode = mint_permission;931 Self::save_collection(target_collection);932933 Ok(())934 }935936 /// Change the owner of the collection.937 /// 938 /// # Permissions939 /// 940 /// * Collection Owner.941 /// 942 /// # Arguments943 /// 944 /// * collection_id.945 /// 946 /// * new_owner.947 #[weight = <T as Config>::WeightInfo::change_collection_owner()]948 #[transactional]949 pub fn change_collection_owner(origin, collection_id: CollectionId, new_owner: T::CrossAccountId) -> DispatchResult {950951 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);952 let mut target_collection = Self::get_collection(collection_id)?;953 Self::check_owner_permissions(&target_collection, sender)?;954 target_collection.owner = new_owner;955 Self::save_collection(target_collection);956957 Ok(())958 }959960 /// Adds an admin of the Collection.961 /// 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. 962 /// 963 /// # Permissions964 /// 965 /// * Collection Owner.966 /// * Collection Admin.967 /// 968 /// # Arguments969 /// 970 /// * collection_id: ID of the Collection to add admin for.971 /// 972 /// * new_admin_id: Address of new admin to add.973 #[weight = <T as Config>::WeightInfo::add_collection_admin()]974 #[transactional]975 pub fn add_collection_admin(origin, collection_id: CollectionId, new_admin_id: T::CrossAccountId) -> DispatchResult {976977 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);978 let collection = Self::get_collection(collection_id)?;979 Self::check_owner_or_admin_permissions(&collection, sender)?;980 let mut admin_arr = <AdminList<T>>::get(collection_id);981982 match admin_arr.binary_search(&new_admin_id) {983 Ok(_) => {},984 Err(idx) => {985 let limits = ChainLimit::get();986 ensure!(admin_arr.len() < limits.collections_admins_limit as usize, Error::<T>::CollectionAdminsLimitExceeded);987 admin_arr.insert(idx, new_admin_id);988 <AdminList<T>>::insert(collection_id, admin_arr);989 }990 }991 Ok(())992 }993994 /// 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.995 ///996 /// # Permissions997 /// 998 /// * Collection Owner.999 /// * Collection Admin.1000 /// 1001 /// # Arguments1002 /// 1003 /// * collection_id: ID of the Collection to remove admin for.1004 /// 1005 /// * account_id: Address of admin to remove.1006 #[weight = <T as Config>::WeightInfo::remove_collection_admin()]1007 #[transactional]1008 pub fn remove_collection_admin(origin, collection_id: CollectionId, account_id: T::CrossAccountId) -> DispatchResult {10091010 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);1011 let collection = Self::get_collection(collection_id)?;1012 Self::check_owner_or_admin_permissions(&collection, sender)?;1013 let mut admin_arr = <AdminList<T>>::get(collection_id);10141015 match admin_arr.binary_search(&account_id) {1016 Ok(idx) => {1017 admin_arr.remove(idx);1018 <AdminList<T>>::insert(collection_id, admin_arr);1019 },1020 Err(_) => {}1021 }1022 Ok(())1023 }10241025 /// # Permissions1026 /// 1027 /// * Collection Owner1028 /// 1029 /// # Arguments1030 /// 1031 /// * collection_id.1032 /// 1033 /// * new_sponsor.1034 #[weight = <T as Config>::WeightInfo::set_collection_sponsor()]1035 #[transactional]1036 pub fn set_collection_sponsor(origin, collection_id: CollectionId, new_sponsor: T::AccountId) -> DispatchResult {1037 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);1038 let mut target_collection = Self::get_collection(collection_id)?;1039 Self::check_owner_permissions(&target_collection, &sender)?;10401041 target_collection.sponsorship = SponsorshipState::Unconfirmed(new_sponsor);1042 Self::save_collection(target_collection);10431044 Ok(())1045 }10461047 /// # Permissions1048 /// 1049 /// * Sponsor.1050 /// 1051 /// # Arguments1052 /// 1053 /// * collection_id.1054 #[weight = <T as Config>::WeightInfo::confirm_sponsorship()]1055 #[transactional]1056 pub fn confirm_sponsorship(origin, collection_id: CollectionId) -> DispatchResult {1057 let sender = ensure_signed(origin)?;10581059 let mut target_collection = Self::get_collection(collection_id)?;1060 ensure!(1061 target_collection.sponsorship.pending_sponsor() == Some(&sender),1062 Error::<T>::ConfirmUnsetSponsorFail1063 );10641065 target_collection.sponsorship = SponsorshipState::Confirmed(sender);1066 Self::save_collection(target_collection);10671068 Ok(())1069 }10701071 /// Switch back to pay-per-own-transaction model.1072 ///1073 /// # Permissions1074 ///1075 /// * Collection owner.1076 /// 1077 /// # Arguments1078 /// 1079 /// * collection_id.1080 #[weight = <T as Config>::WeightInfo::remove_collection_sponsor()]1081 #[transactional]1082 pub fn remove_collection_sponsor(origin, collection_id: CollectionId) -> DispatchResult {1083 let sender = ensure_signed(origin)?;10841085 let mut target_collection = Self::get_collection(collection_id)?;1086 Self::check_owner_permissions(&target_collection, sender)?;10871088 target_collection.sponsorship = SponsorshipState::Disabled;1089 Self::save_collection(target_collection);10901091 Ok(())1092 }10931094 /// This method creates a concrete instance of NFT Collection created with CreateCollection method.1095 /// 1096 /// # Permissions1097 /// 1098 /// * Collection Owner.1099 /// * Collection Admin.1100 /// * Anyone if1101 /// * White List is enabled, and1102 /// * Address is added to white list, and1103 /// * MintPermission is enabled (see SetMintPermission method)1104 /// 1105 /// # Arguments1106 /// 1107 /// * collection_id: ID of the collection.1108 /// 1109 /// * owner: Address, initial owner of the NFT.1110 ///1111 /// * data: Token data to store on chain.1112 // #[weight =1113 // (130_000_000 as Weight)1114 // .saturating_add((2135 as Weight).saturating_mul((properties.len() as u64) as Weight))1115 // .saturating_add(RocksDbWeight::get().reads(10 as Weight))1116 // .saturating_add(RocksDbWeight::get().writes(8 as Weight))]11171118 #[weight = <T as Config>::WeightInfo::create_item(data.len())]1119 #[transactional]1120 pub fn create_item(origin, collection_id: CollectionId, owner: T::CrossAccountId, data: CreateItemData) -> DispatchResult {11211122 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);11231124 let target_collection = Self::get_collection(collection_id)?;11251126 Self::can_create_items_in_collection(&target_collection, &sender, &owner, 1)?;1127 Self::validate_create_item_args(&target_collection, &data)?;1128 Self::create_item_no_validation(&target_collection, owner, data)?;11291130 Ok(())1131 }11321133 /// This method creates multiple items in a collection created with CreateCollection method.1134 /// 1135 /// # Permissions1136 /// 1137 /// * Collection Owner.1138 /// * Collection Admin.1139 /// * Anyone if1140 /// * White List is enabled, and1141 /// * Address is added to white list, and1142 /// * MintPermission is enabled (see SetMintPermission method)1143 /// 1144 /// # Arguments1145 /// 1146 /// * collection_id: ID of the collection.1147 /// 1148 /// * itemsData: Array items properties. Each property is an array of bytes itself, see [create_item].1149 /// 1150 /// * owner: Address, initial owner of the NFT.1151 #[weight = <T as Config>::WeightInfo::create_item(items_data.into_iter()1152 .map(|data| { data.len() })1153 .sum())]1154 #[transactional]1155 pub fn create_multiple_items(origin, collection_id: CollectionId, owner: T::CrossAccountId, items_data: Vec<CreateItemData>) -> DispatchResult {11561157 ensure!(items_data.len() > 0, Error::<T>::EmptyArgument);1158 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);1159 let collection = Self::get_collection(collection_id)?;11601161 Self::create_multiple_items_internal(sender, &collection, owner, items_data)?;11621163 Ok(())1164 }11651166 /// Destroys a concrete instance of NFT.1167 /// 1168 /// # Permissions1169 /// 1170 /// * Collection Owner.1171 /// * Collection Admin.1172 /// * Current NFT Owner.1173 /// 1174 /// # Arguments1175 /// 1176 /// * collection_id: ID of the collection.1177 /// 1178 /// * item_id: ID of NFT to burn.1179 #[weight = <T as Config>::WeightInfo::burn_item()]1180 #[transactional]1181 pub fn burn_item(origin, collection_id: CollectionId, item_id: TokenId, value: u128) -> DispatchResult {11821183 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);1184 let target_collection = Self::get_collection(collection_id)?;11851186 Self::burn_item_internal(&sender, &target_collection, item_id, value)?;11871188 Ok(())1189 }11901191 /// Change ownership of the token.1192 /// 1193 /// # Permissions1194 /// 1195 /// * Collection Owner1196 /// * Collection Admin1197 /// * Current NFT owner1198 ///1199 /// # Arguments1200 /// 1201 /// * recipient: Address of token recipient.1202 /// 1203 /// * collection_id.1204 /// 1205 /// * item_id: ID of the item1206 /// * Non-Fungible Mode: Required.1207 /// * Fungible Mode: Ignored.1208 /// * Re-Fungible Mode: Required.1209 /// 1210 /// * value: Amount to transfer.1211 /// * Non-Fungible Mode: Ignored1212 /// * Fungible Mode: Must specify transferred amount1213 /// * Re-Fungible Mode: Must specify transferred portion (between 0 and 1)1214 #[weight = <T as Config>::WeightInfo::transfer()]1215 #[transactional]1216 pub fn transfer(origin, recipient: T::CrossAccountId, collection_id: CollectionId, item_id: TokenId, value: u128) -> DispatchResult {1217 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);1218 let collection = Self::get_collection(collection_id)?;12191220 Self::transfer_internal(sender, recipient, &collection, item_id, value)?;12211222 Ok(())1223 }12241225 /// Set, change, or remove approved address to transfer the ownership of the NFT.1226 /// 1227 /// # Permissions1228 /// 1229 /// * Collection Owner1230 /// * Collection Admin1231 /// * Current NFT owner1232 /// 1233 /// # Arguments1234 /// 1235 /// * approved: Address that is approved to transfer this NFT or zero (if needed to remove approval).1236 /// 1237 /// * collection_id.1238 /// 1239 /// * item_id: ID of the item.1240 #[weight = <T as Config>::WeightInfo::approve()]1241 #[transactional]1242 pub fn approve(origin, spender: T::AccountId, collection_id: CollectionId, item_id: TokenId, amount: u128) -> DispatchResult {12431244 let sender = ensure_signed(origin)?;1245 let target_collection = Self::get_collection(collection_id)?;12461247 Self::token_exists(&target_collection, item_id)?;12481249 // Transfer permissions check1250 let bypasses_limits = target_collection.limits.owner_can_transfer &&1251 Self::is_owner_or_admin_permissions(1252 &target_collection,1253 sender.clone(),1254 );12551256 let allowance_limit = if bypasses_limits {1257 None1258 } else if let Some(amount) = Self::owned_amount(1259 sender.clone(),1260 &target_collection,1261 item_id,1262 ) {1263 Some(amount)1264 } else {1265 fail!(Error::<T>::NoPermission);1266 };12671268 if target_collection.access == AccessMode::WhiteList {1269 Self::check_white_list(&target_collection, &sender)?;1270 Self::check_white_list(&target_collection, &spender)?;1271 }12721273 let allowance: u128 = amount1274 .checked_add(<Allowances<T>>::get(collection_id, (item_id, &sender, &spender)))1275 .ok_or(Error::<T>::NumOverflow)?;1276 if let Some(limit) = allowance_limit {1277 ensure!(limit >= allowance, Error::<T>::TokenValueTooLow);1278 }1279 <Allowances<T>>::insert(collection_id, (item_id, sender.clone(), spender.clone()), allowance);12801281 Self::deposit_event(RawEvent::Approved(target_collection.id, item_id, sender, spender, allowance));1282 Ok(())1283 }1284 1285 /// 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.1286 /// 1287 /// # Permissions1288 /// * Collection Owner1289 /// * Collection Admin1290 /// * Current NFT owner1291 /// * Address approved by current NFT owner1292 /// 1293 /// # Arguments1294 /// 1295 /// * from: Address that owns token.1296 /// 1297 /// * recipient: Address of token recipient.1298 /// 1299 /// * collection_id.1300 /// 1301 /// * item_id: ID of the item.1302 /// 1303 /// * value: Amount to transfer.1304 #[weight = <T as Config>::WeightInfo::transfer_from()]1305 #[transactional]1306 pub fn transfer_from(origin, from: T::AccountId, recipient: T::AccountId, collection_id: CollectionId, item_id: TokenId, value: u128 ) -> DispatchResult {13071308 let sender = ensure_signed(origin)?;1309 let target_collection = Self::get_collection(collection_id)?;13101311 // Check approval1312 let approval: u128 = <Allowances<T>>::get(collection_id, (item_id, &from, &sender));13131314 // Limits check1315 Self::is_correct_transfer(&target_collection, &recipient)?;13161317 // Transfer permissions check 1318 ensure!(1319 approval >= value || 1320 (1321 target_collection.limits.owner_can_transfer &&1322 Self::is_owner_or_admin_permissions(&target_collection, sender.clone())1323 ),1324 Error::<T>::NoPermission1325 );13261327 if target_collection.access == AccessMode::WhiteList {1328 Self::check_white_list(&target_collection, &sender)?;1329 Self::check_white_list(&target_collection, &recipient)?;1330 }13311332 // Reduce approval by transferred amount or remove if remaining approval drops to 01333 if approval.saturating_sub(value) > 0 {1334 <Allowances<T>>::insert(collection_id, (item_id, &from, &sender), approval - value);1335 }1336 else {1337 <Allowances<T>>::remove(collection_id, (item_id, &from, &sender));1338 }13391340 match target_collection.mode1341 {1342 CollectionMode::NFT => Self::transfer_nft(&target_collection, item_id, from.clone(), recipient.clone())?,1343 CollectionMode::Fungible(_) => Self::transfer_fungible(&target_collection, value, &from, &recipient)?,1344 CollectionMode::ReFungible => Self::transfer_refungible(&target_collection, item_id, value, from.clone(), recipient.clone())?,1345 _ => ()1346 };13471348 Self::deposit_event(RawEvent::Transfer(target_collection.id, item_id, from, recipient, value));1349 Ok(())1350 }13511352 // #[weight = 0]1353 // pub fn safe_transfer_from(origin, collection_id: CollectionId, item_id: TokenId, new_owner: T::AccountId) -> DispatchResult {13541355 // // let no_perm_mes = "You do not have permissions to modify this collection";1356 // // ensure!(<ApprovedList<T>>::contains_key((collection_id, item_id)), no_perm_mes);1357 // // let list_itm = <ApprovedList<T>>::get((collection_id, item_id));1358 // // ensure!(list_itm.contains(&new_owner.clone()), no_perm_mes);13591360 // // // on_nft_received call13611362 // // Self::transfer(origin, collection_id, item_id, new_owner)?;13631364 // Ok(())1365 // }13661367 /// Set off-chain data schema.1368 /// 1369 /// # Permissions1370 /// 1371 /// * Collection Owner1372 /// * Collection Admin1373 /// 1374 /// # Arguments1375 /// 1376 /// * collection_id.1377 /// 1378 /// * schema: String representing the offchain data schema.1379 #[weight = <T as Config>::WeightInfo::set_variable_meta_data()]1380 #[transactional]1381 pub fn set_variable_meta_data (1382 origin,1383 collection_id: CollectionId,1384 item_id: TokenId,1385 data: Vec<u8>1386 ) -> DispatchResult {1387 let sender = ensure_signed(origin)?;1388 1389 let target_collection = Self::get_collection(collection_id)?;1390 Self::token_exists(&target_collection, item_id)?;13911392 ensure!(ChainLimit::get().custom_data_limit >= data.len() as u32, Error::<T>::TokenVariableDataLimitExceeded);13931394 // Modify permissions check1395 ensure!(Self::is_item_owner(sender.clone(), &target_collection, item_id) ||1396 Self::is_owner_or_admin_permissions(&target_collection, sender.clone()),1397 Error::<T>::NoPermission);13981399 match target_collection.mode1400 {1401 CollectionMode::NFT => Self::set_nft_variable_data(&target_collection, item_id, data)?,1402 CollectionMode::ReFungible => Self::set_re_fungible_variable_data(&target_collection, item_id, data)?,1403 CollectionMode::Fungible(_) => fail!(Error::<T>::CantStoreMetadataInFungibleTokens),1404 _ => fail!(Error::<T>::UnexpectedCollectionType)1405 };14061407 Ok(())1408 }1409 1410 /// Set schema standard1411 /// ImageURL1412 /// Unique1413 /// 1414 /// # Permissions1415 /// 1416 /// * Collection Owner1417 /// * Collection Admin1418 /// 1419 /// # Arguments1420 /// 1421 /// * collection_id.1422 /// 1423 /// * schema: SchemaVersion: enum1424 #[weight = <T as Config>::WeightInfo::set_schema_version()]1425 #[transactional]1426 pub fn set_schema_version(1427 origin,1428 collection_id: CollectionId,1429 version: SchemaVersion1430 ) -> DispatchResult {1431 let sender = ensure_signed(origin)?;1432 let mut target_collection = Self::get_collection(collection_id)?;1433 Self::check_owner_or_admin_permissions(&target_collection, sender.clone())?;1434 target_collection.schema_version = version;1435 Self::save_collection(target_collection);14361437 Ok(())1438 }14391440 /// Set off-chain data schema.1441 /// 1442 /// # Permissions1443 /// 1444 /// * Collection Owner1445 /// * Collection Admin1446 /// 1447 /// # Arguments1448 /// 1449 /// * collection_id.1450 /// 1451 /// * schema: String representing the offchain data schema.1452 #[weight = <T as Config>::WeightInfo::set_offchain_schema()]1453 #[transactional]1454 pub fn set_offchain_schema(1455 origin,1456 collection_id: CollectionId,1457 schema: Vec<u8>1458 ) -> DispatchResult {1459 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);1460 let mut target_collection = Self::get_collection(collection_id)?;1461 Self::check_owner_or_admin_permissions(&target_collection, sender)?;14621463 // check schema limit1464 ensure!(schema.len() as u32 <= ChainLimit::get().offchain_schema_limit, "");14651466 target_collection.offchain_schema = schema;1467 Self::save_collection(target_collection);14681469 Ok(())1470 }14711472 /// Set const on-chain data schema.1473 /// 1474 /// # Permissions1475 /// 1476 /// * Collection Owner1477 /// * Collection Admin1478 /// 1479 /// # Arguments1480 /// 1481 /// * collection_id.1482 /// 1483 /// * schema: String representing the const on-chain data schema.1484 #[weight = <T as Config>::WeightInfo::set_const_on_chain_schema()]1485 #[transactional]1486 pub fn set_const_on_chain_schema (1487 origin,1488 collection_id: CollectionId,1489 schema: Vec<u8>1490 ) -> DispatchResult {1491 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);1492 let mut target_collection = Self::get_collection(collection_id)?;1493 Self::check_owner_or_admin_permissions(&target_collection, sender)?;14941495 // check schema limit1496 ensure!(schema.len() as u32 <= ChainLimit::get().const_on_chain_schema_limit, "");14971498 target_collection.const_on_chain_schema = schema;1499 Self::save_collection(target_collection);15001501 Ok(())1502 }15031504 /// Set variable on-chain data schema.1505 /// 1506 /// # Permissions1507 /// 1508 /// * Collection Owner1509 /// * Collection Admin1510 /// 1511 /// # Arguments1512 /// 1513 /// * collection_id.1514 /// 1515 /// * schema: String representing the variable on-chain data schema.1516 #[weight = <T as Config>::WeightInfo::set_const_on_chain_schema()]1517 #[transactional]1518 pub fn set_variable_on_chain_schema (1519 origin,1520 collection_id: CollectionId,1521 schema: Vec<u8>1522 ) -> DispatchResult {1523 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);1524 let mut target_collection = Self::get_collection(collection_id)?;1525 Self::check_owner_or_admin_permissions(&target_collection, sender)?;15261527 // check schema limit1528 ensure!(schema.len() as u32 <= ChainLimit::get().variable_on_chain_schema_limit, "");15291530 target_collection.variable_on_chain_schema = schema;1531 Self::save_collection(target_collection);15321533 Ok(())1534 }15351536 // Sudo permissions function1537 #[weight = <T as Config>::WeightInfo::set_chain_limits()]1538 #[transactional]1539 pub fn set_chain_limits(1540 origin,1541 limits: ChainLimits1542 ) -> DispatchResult {15431544 #[cfg(not(feature = "runtime-benchmarks"))]1545 ensure_root(origin)?;15461547 <ChainLimit>::put(limits);1548 Ok(())1549 }15501551 /// Enable smart contract self-sponsoring.1552 /// 1553 /// # Permissions1554 /// 1555 /// * Contract Owner1556 /// 1557 /// # Arguments1558 /// 1559 /// * contract address1560 /// * enable flag1561 /// 1562 #[weight = <T as Config>::WeightInfo::enable_contract_sponsoring()]1563 #[transactional]1564 pub fn enable_contract_sponsoring(1565 origin,1566 contract_address: T::AccountId,1567 enable: bool1568 ) -> DispatchResult {15691570 let sender = ensure_signed(origin)?;15711572 #[cfg(feature = "runtime-benchmarks")]1573 <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());15741575 Self::ensure_contract_owned(sender, &contract_address)?;15761577 <ContractSelfSponsoring<T>>::insert(contract_address, enable);1578 Ok(())1579 }15801581 /// Set the rate limit for contract sponsoring to specified number of blocks.1582 /// 1583 /// If not set (has the default value of 0 blocks), the sponsoring will be disabled. 1584 /// If set to the number B (for blocks), the transactions will be sponsored with a rate 1585 /// limit of B, i.e. fees for every transaction sent to this smart contract will be paid 1586 /// from contract endowment if there are at least B blocks between such transactions. 1587 /// Nonetheless, if transactions are sent more frequently, the fees are paid by the sender.1588 /// 1589 /// # Permissions1590 /// 1591 /// * Contract Owner1592 /// 1593 /// # Arguments1594 /// 1595 /// -`contract_address`: Address of the contract to sponsor1596 /// -`rate_limit`: Number of blocks to wait until the next sponsored transaction is allowed1597 /// 1598 #[weight = <T as Config>::WeightInfo::set_contract_sponsoring_rate_limit()]1599 #[transactional]1600 pub fn set_contract_sponsoring_rate_limit(1601 origin,1602 contract_address: T::AccountId,1603 rate_limit: T::BlockNumber1604 ) -> DispatchResult {1605 let sender = ensure_signed(origin)?;16061607 #[cfg(feature = "runtime-benchmarks")]1608 <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());16091610 Self::ensure_contract_owned(sender, &contract_address)?;1611 <ContractSponsoringRateLimit<T>>::insert(contract_address, rate_limit);1612 Ok(())1613 }16141615 /// Enable the white list for a contract. Only addresses added to the white list with addToContractWhiteList will be able to call this smart contract.1616 /// 1617 /// # Permissions1618 /// 1619 /// * Address that deployed smart contract.1620 /// 1621 /// # Arguments1622 /// 1623 /// -`contract_address`: Address of the contract.1624 /// 1625 /// - `enable`: . 1626 #[weight = <T as Config>::WeightInfo::toggle_contract_white_list()]1627 #[transactional]1628 pub fn toggle_contract_white_list(1629 origin,1630 contract_address: T::AccountId,1631 enable: bool1632 ) -> DispatchResult {1633 let sender = ensure_signed(origin)?;16341635 #[cfg(feature = "runtime-benchmarks")]1636 <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());16371638 Self::ensure_contract_owned(sender, &contract_address)?;1639 if enable {1640 <ContractWhiteListEnabled<T>>::insert(contract_address, true);1641 } else {1642 <ContractWhiteListEnabled<T>>::remove(contract_address);1643 }1644 Ok(())1645 }1646 1647 /// Add an address to smart contract white list.1648 /// 1649 /// # Permissions1650 /// 1651 /// * Address that deployed smart contract.1652 /// 1653 /// # Arguments1654 /// 1655 /// -`contract_address`: Address of the contract.1656 ///1657 /// -`account_address`: Address to add.1658 #[weight = <T as Config>::WeightInfo::add_to_contract_white_list()]1659 #[transactional]1660 pub fn add_to_contract_white_list(1661 origin,1662 contract_address: T::AccountId,1663 account_address: T::AccountId1664 ) -> DispatchResult {1665 let sender = ensure_signed(origin)?;16661667 #[cfg(feature = "runtime-benchmarks")]1668 <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());1669 1670 Self::ensure_contract_owned(sender, &contract_address)?; 1671 <ContractWhiteList<T>>::insert(contract_address, account_address, true);1672 Ok(())1673 }16741675 /// Remove an address from smart contract white list.1676 /// 1677 /// # Permissions1678 /// 1679 /// * Address that deployed smart contract.1680 /// 1681 /// # Arguments1682 /// 1683 /// -`contract_address`: Address of the contract.1684 ///1685 /// -`account_address`: Address to remove.1686 #[weight = <T as Config>::WeightInfo::remove_from_contract_white_list()]1687 #[transactional]1688 pub fn remove_from_contract_white_list(1689 origin,1690 contract_address: T::AccountId,1691 account_address: T::AccountId1692 ) -> DispatchResult {1693 let sender = ensure_signed(origin)?;16941695 #[cfg(feature = "runtime-benchmarks")]1696 <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());16971698 Self::ensure_contract_owned(sender, &contract_address)?;1699 <ContractWhiteList<T>>::remove(contract_address, account_address);1700 Ok(())1701 }17021703 #[weight = <T as Config>::WeightInfo::set_collection_limits()]1704 #[transactional]1705 pub fn set_collection_limits(1706 origin,1707 collection_id: u32,1708 new_limits: CollectionLimits<T::BlockNumber>,1709 ) -> DispatchResult {1710 let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);1711 let mut target_collection = Self::get_collection(collection_id)?;1712 Self::check_owner_permissions(&target_collection, sender.clone())?;1713 let old_limits = &target_collection.limits;1714 let chain_limits = ChainLimit::get();17151716 // collection bounds1717 ensure!(new_limits.sponsor_transfer_timeout <= MAX_SPONSOR_TIMEOUT &&1718 new_limits.account_token_ownership_limit <= MAX_TOKEN_OWNERSHIP && 1719 new_limits.sponsored_data_size <= chain_limits.custom_data_limit,1720 Error::<T>::CollectionLimitBoundsExceeded);17211722 // token_limit check prev1723 ensure!(old_limits.token_limit >= new_limits.token_limit, Error::<T>::CollectionTokenLimitExceeded);1724 ensure!(new_limits.token_limit > 0, Error::<T>::CollectionTokenLimitExceeded);17251726 ensure!(1727 (old_limits.owner_can_transfer || !new_limits.owner_can_transfer) &&1728 (old_limits.owner_can_destroy || !new_limits.owner_can_destroy),1729 Error::<T>::OwnerPermissionsCantBeReverted,1730 );17311732 target_collection.limits = new_limits;1733 Self::save_collection(target_collection);17341735 Ok(())1736 } 1737 }1738}17391740impl<T: Config> Module<T> {17411742 pub fn transfer_internal(sender: T::CrossAccountId, recipient: T::CrossAccountId, target_collection: &CollectionHandle<T>, item_id: TokenId, value: u128) -> DispatchResult {1743 // Limits check1744 Self::is_correct_transfer(target_collection, &recipient)?;17451746 // Transfer permissions check1747 ensure!(Self::is_item_owner(sender.clone(), target_collection, item_id) ||1748 Self::is_owner_or_admin_permissions(target_collection, sender.clone()),1749 Error::<T>::NoPermission);17501751 if target_collection.access == AccessMode::WhiteList {1752 Self::check_white_list(target_collection, &sender)?;1753 Self::check_white_list(target_collection, &recipient)?;1754 }17551756 match target_collection.mode1757 {1758 CollectionMode::NFT => Self::transfer_nft(target_collection, item_id, sender.clone(), recipient.clone())?,1759 CollectionMode::Fungible(_) => Self::transfer_fungible(target_collection, value, &sender, &recipient)?,1760 CollectionMode::ReFungible => Self::transfer_refungible(target_collection, item_id, value, sender.clone(), recipient.clone())?,1761 _ => ()1762 };17631764 Self::deposit_event(RawEvent::Transfer(target_collection.id, item_id, sender, recipient, value));17651766 Ok(())1767 }17681769 pub fn approve_internal(1770 sender: T::AccountId,1771 spender: T::AccountId,1772 collection: &CollectionHandle<T>,1773 item_id: TokenId,1774 amount: u1281775 ) -> DispatchResult {1776 Self::token_exists(&collection, item_id)?;17771778 // Transfer permissions check1779 let bypasses_limits = collection.limits.owner_can_transfer &&1780 Self::is_owner_or_admin_permissions(1781 &collection,1782 sender.clone(),1783 );17841785 let allowance_limit = if bypasses_limits {1786 None1787 } else if let Some(amount) = Self::owned_amount(1788 sender.clone(),1789 &collection,1790 item_id,1791 ) {1792 Some(amount)1793 } else {1794 fail!(Error::<T>::NoPermission);1795 };17961797 if collection.access == AccessMode::WhiteList {1798 Self::check_white_list(&collection, &sender)?;1799 Self::check_white_list(&collection, &spender)?;1800 }18011802 let allowance: u128 = amount1803 .checked_add(<Allowances<T>>::get(collection.id, (item_id, &sender, &spender)))1804 .ok_or(Error::<T>::NumOverflow)?;1805 if let Some(limit) = allowance_limit {1806 ensure!(limit >= allowance, Error::<T>::TokenValueTooLow);1807 }1808 <Allowances<T>>::insert(collection.id, (item_id, sender.clone(), spender.clone()), allowance);18091810 Self::deposit_event(RawEvent::Approved(collection.id, item_id, sender, spender, allowance));1811 Ok(())1812 }18131814 pub fn transfer_from_internal(1815 sender: T::AccountId,1816 from: T::AccountId,1817 recipient: T::AccountId,1818 collection: &CollectionHandle<T>,1819 item_id: TokenId,1820 amount: u128,1821 ) -> DispatchResult {1822 // Check approval1823 let approval: u128 = <Allowances<T>>::get(collection.id, (item_id, &from, &sender));18241825 // Limits check1826 Self::is_correct_transfer(&collection, &recipient)?;18271828 // Transfer permissions check1829 ensure!(1830 approval >= amount || 1831 (1832 collection.limits.owner_can_transfer &&1833 Self::is_owner_or_admin_permissions(&collection, sender.clone())1834 ),1835 Error::<T>::NoPermission1836 );18371838 if collection.access == AccessMode::WhiteList {1839 Self::check_white_list(&collection, &sender)?;1840 Self::check_white_list(&collection, &recipient)?;1841 }18421843 // Reduce approval by transferred amount or remove if remaining approval drops to 01844 if approval.saturating_sub(amount) > 0 {1845 <Allowances<T>>::insert(collection.id, (item_id, &from, &sender), approval - amount);1846 } else {1847 <Allowances<T>>::remove(collection.id, (item_id, &from, &sender));1848 }18491850 match collection.mode {1851 CollectionMode::NFT => {1852 Self::transfer_nft(&collection, item_id, from.clone(), recipient.clone())?1853 }1854 CollectionMode::Fungible(_) => {1855 Self::transfer_fungible(&collection, amount, &from, &recipient)?1856 }1857 CollectionMode::ReFungible => {1858 Self::transfer_refungible(&collection, item_id, amount, from.clone(), recipient.clone())?1859 }1860 _ => ()1861 };18621863 pub fn create_multiple_items_internal(1864 sender: T::CrossAccountId,1865 collection: &CollectionHandle<T>,1866 owner: T::CrossAccountId,1867 items_data: Vec<CreateItemData>,1868 ) -> DispatchResult {1869 Self::can_create_items_in_collection(&collection, &sender, &owner, items_data.len() as u32)?;18701871 for data in &items_data {1872 Self::validate_create_item_args(&collection, data)?;1873 }1874 for data in &items_data {1875 Self::create_item_no_validation(&collection, owner.clone(), data.clone())?;1876 }18771878 Ok(())1879 }18801881 pub fn burn_item_internal(1882 sender: &T::CrossAccountId,1883 collection: &CollectionHandle<T>,1884 item_id: TokenId,1885 value: u128,1886 ) -> DispatchResult {1887 ensure!(1888 Self::is_item_owner(sender.clone(), &collection, item_id) ||1889 (1890 collection.limits.owner_can_transfer &&1891 Self::is_owner_or_admin_permissions(&collection, sender.clone())1892 ),1893 Error::<T>::NoPermission1894 );18951896 if collection.access == AccessMode::WhiteList {1897 Self::check_white_list(&collection, &sender)?;1898 }18991900 match collection.mode1901 {1902 CollectionMode::NFT => Self::burn_nft_item(&collection, item_id)?,1903 CollectionMode::Fungible(_) => Self::burn_fungible_item(&sender, &collection, value)?,1904 CollectionMode::ReFungible => Self::burn_refungible_item(&collection, item_id, &sender)?,1905 _ => ()1906 };19071908 Ok(())1909 }19101911 fn is_correct_transfer(collection: &CollectionHandle<T>, recipient: &T::CrossAccountId) -> DispatchResult {1912 let collection_id = collection.id;19131914 // check token limit and account token limit1915 let account_items: u32 = <AddressTokens<T>>::get(collection_id, recipient.as_sub()).len() as u32;1916 ensure!(collection.limits.account_token_ownership_limit > account_items, Error::<T>::AccountTokenLimitExceeded);1917 1918 Ok(())1919 }19201921 fn can_create_items_in_collection(collection: &CollectionHandle<T>, sender: &T::AccountId, owner: &T::AccountId, amount: u32) -> DispatchResult {1922 let collection_id = collection.id;19231924 // check token limit and account token limit1925 let total_items: u32 = ItemListIndex::get(collection_id)1926 .checked_add(amount)1927 .ok_or(Error::<T>::CollectionTokenLimitExceeded)?;1928 let account_items: u32 = (<AddressTokens<T>>::get(collection_id, owner).len() as u32)1929 .checked_add(amount)1930 .ok_or(Error::<T>::AccountTokenLimitExceeded)?;1931 ensure!(collection.limits.token_limit >= total_items, Error::<T>::CollectionTokenLimitExceeded);1932 ensure!(collection.limits.account_token_ownership_limit >= account_items, Error::<T>::AccountTokenLimitExceeded);19331934 if !Self::is_owner_or_admin_permissions(collection, sender.clone()) {1935 ensure!(collection.mint_mode == true, Error::<T>::PublicMintingNotAllowed);1936 Self::check_white_list(collection, owner)?;1937 Self::check_white_list(collection, sender)?;1938 }19391940 Ok(())1941 }19421943 fn validate_create_item_args(target_collection: &CollectionHandle<T>, data: &CreateItemData) -> DispatchResult {1944 match target_collection.mode1945 {1946 CollectionMode::NFT => {1947 if let CreateItemData::NFT(data) = data {1948 // check sizes1949 ensure!(ChainLimit::get().custom_data_limit >= data.const_data.len() as u32, Error::<T>::TokenConstDataLimitExceeded);1950 ensure!(ChainLimit::get().custom_data_limit >= data.variable_data.len() as u32, Error::<T>::TokenVariableDataLimitExceeded);1951 } else {1952 fail!(Error::<T>::NotNftDataUsedToMintNftCollectionToken);1953 }1954 },1955 CollectionMode::Fungible(_) => {1956 if let CreateItemData::Fungible(_) = data {1957 } else {1958 fail!(Error::<T>::NotFungibleDataUsedToMintFungibleCollectionToken);1959 }1960 },1961 CollectionMode::ReFungible => {1962 if let CreateItemData::ReFungible(data) = data {19631964 // check sizes1965 ensure!(ChainLimit::get().custom_data_limit >= data.const_data.len() as u32, Error::<T>::TokenConstDataLimitExceeded);1966 ensure!(ChainLimit::get().custom_data_limit >= data.variable_data.len() as u32, Error::<T>::TokenVariableDataLimitExceeded);19671968 // Check refungibility limits1969 ensure!(data.pieces <= MAX_REFUNGIBLE_PIECES, Error::<T>::WrongRefungiblePieces);1970 ensure!(data.pieces > 0, Error::<T>::WrongRefungiblePieces);1971 } else {1972 fail!(Error::<T>::NotReFungibleDataUsedToMintReFungibleCollectionToken);1973 }1974 },1975 _ => { fail!(Error::<T>::UnexpectedCollectionType); }1976 };19771978 Ok(())1979 }19801981 fn create_item_no_validation(collection: &CollectionHandle<T>, owner: T::CrossAccountId, data: CreateItemData) -> DispatchResult {1982 match data1983 {1984 CreateItemData::NFT(data) => {1985 let item = NftItemType {1986 owner: owner.clone(),1987 const_data: data.const_data,1988 variable_data: data.variable_data1989 };19901991 Self::add_nft_item(collection, item)?;1992 },1993 CreateItemData::Fungible(data) => {1994 Self::add_fungible_item(collection, &owner, data.value)?;1995 },1996 CreateItemData::ReFungible(data) => {1997 let mut owner_list = Vec::new();1998 owner_list.push(Ownership {owner: owner.clone(), fraction: data.pieces});19992000 let item = ReFungibleItemType {2001 owner: owner_list,2002 const_data: data.const_data,2003 variable_data: data.variable_data2004 };20052006 Self::add_refungible_item(collection, item)?;2007 }2008 };20092010 Ok(())2011 }20122013 fn add_fungible_item(collection: &CollectionHandle<T>, owner: &T::CrossAccountId, value: u128) -> DispatchResult {2014 let collection_id = collection.id;20152016 // Does new owner already have an account?2017 let balance: u128 = <FungibleItemList<T>>::get(collection_id, owner.as_sub()).value;20182019 // Mint 2020 let item = FungibleItemType {2021 value: balance.checked_add(value).ok_or(Error::<T>::NumOverflow)?,2022 };2023 <FungibleItemList<T>>::insert(collection_id, owner.as_sub(), item);20242025 // Update balance2026 let new_balance = <Balance<T>>::get(collection_id, owner.as_sub())2027 .checked_add(value)2028 .ok_or(Error::<T>::NumOverflow)?;2029 <Balance<T>>::insert(collection_id, owner.as_sub(), new_balance);20302031 Self::deposit_event(RawEvent::ItemCreated(collection_id, 0, owner.clone()));2032 Ok(())2033 }20342035 fn add_refungible_item(collection: &CollectionHandle<T>, item: ReFungibleItemType<T::CrossAccountId>) -> DispatchResult {2036 let collection_id = collection.id;20372038 let current_index = <ItemListIndex>::get(collection_id)2039 .checked_add(1)2040 .ok_or(Error::<T>::NumOverflow)?;2041 let itemcopy = item.clone();20422043 ensure!(2044 item.owner.len() == 1,2045 Error::<T>::BadCreateRefungibleCall,2046 );2047 let item_owner = item.owner.first().expect("only one owner is defined");20482049 let value = item_owner.fraction;2050 let owner = item_owner.owner.clone();20512052 Self::add_token_index(collection_id, current_index, &owner)?;20532054 <ItemListIndex>::insert(collection_id, current_index);2055 <ReFungibleItemList<T>>::insert(collection_id, current_index, itemcopy);20562057 // Update balance2058 let new_balance = <Balance<T>>::get(collection_id, owner.as_sub())2059 .checked_add(value)2060 .ok_or(Error::<T>::NumOverflow)?;2061 <Balance<T>>::insert(collection_id, owner.as_sub(), new_balance);20622063 Self::deposit_event(RawEvent::ItemCreated(collection_id, current_index, owner));2064 Ok(())2065 }20662067 fn add_nft_item(collection: &CollectionHandle<T>, item: NftItemType<T::CrossAccountId>) -> DispatchResult {2068 let collection_id = collection.id;20692070 let current_index = <ItemListIndex>::get(collection_id)2071 .checked_add(1)2072 .ok_or(Error::<T>::NumOverflow)?;20732074 let item_owner = item.owner.clone();2075 Self::add_token_index(collection_id, current_index, &item.owner)?;20762077 <ItemListIndex>::insert(collection_id, current_index);2078 <NftItemList<T>>::insert(collection_id, current_index, item);20792080 // Update balance2081 let new_balance = <Balance<T>>::get(collection_id, item_owner.as_sub())2082 .checked_add(1)2083 .ok_or(Error::<T>::NumOverflow)?;2084 <Balance<T>>::insert(collection_id, item_owner.as_sub(), new_balance);20852086 Self::deposit_event(RawEvent::ItemCreated(collection_id, current_index, item_owner));2087 Ok(())2088 }20892090 fn burn_refungible_item(2091 collection: &CollectionHandle<T>,2092 item_id: TokenId,2093 owner: &T::CrossAccountId,2094 ) -> DispatchResult {2095 let collection_id = collection.id;20962097 let mut token = <ReFungibleItemList<T>>::get(collection_id, item_id)2098 .ok_or(Error::<T>::TokenNotFound)?;2099 let rft_balance = token2100 .owner2101 .iter()2102 .find(|&i| i.owner == *owner)2103 .ok_or(Error::<T>::TokenNotFound)?;2104 Self::remove_token_index(collection_id, item_id, owner)?;21052106 // update balance2107 let new_balance = <Balance<T>>::get(collection_id, rft_balance.owner.as_sub())2108 .checked_sub(rft_balance.fraction)2109 .ok_or(Error::<T>::NumOverflow)?;2110 <Balance<T>>::insert(collection_id, rft_balance.owner.as_sub(), new_balance);21112112 // Re-create owners list with sender removed2113 let index = token2114 .owner2115 .iter()2116 .position(|i| i.owner == *owner)2117 .expect("owned item is exists");2118 token.owner.remove(index);2119 let owner_count = token.owner.len();21202121 // Burn the token completely if this was the last (only) owner2122 if owner_count == 0 {2123 <ReFungibleItemList<T>>::remove(collection_id, item_id);2124 <VariableMetaDataBasket<T>>::remove(collection_id, item_id);2125 }2126 else {2127 <ReFungibleItemList<T>>::insert(collection_id, item_id, token);2128 }21292130 Ok(())2131 }21322133 fn burn_nft_item(collection: &CollectionHandle<T>, item_id: TokenId) -> DispatchResult {2134 let collection_id = collection.id;21352136 let item = <NftItemList<T>>::get(collection_id, item_id)2137 .ok_or(Error::<T>::TokenNotFound)?;2138 Self::remove_token_index(collection_id, item_id, &item.owner)?;21392140 // update balance2141 let new_balance = <Balance<T>>::get(collection_id, item.owner.as_sub())2142 .checked_sub(1)2143 .ok_or(Error::<T>::NumOverflow)?;2144 <Balance<T>>::insert(collection_id, item.owner.as_sub(), new_balance);2145 <NftItemList<T>>::remove(collection_id, item_id);2146 <VariableMetaDataBasket<T>>::remove(collection_id, item_id);21472148 Self::deposit_event(RawEvent::ItemDestroyed(collection.id, item_id));2149 Ok(())2150 }21512152 fn burn_fungible_item(owner: &T::CrossAccountId, collection: &CollectionHandle<T>, value: u128) -> DispatchResult {2153 let collection_id = collection.id;21542155 let mut balance = <FungibleItemList<T>>::get(collection_id, owner.as_sub());2156 ensure!(balance.value >= value, Error::<T>::TokenValueNotEnough);21572158 // update balance2159 let new_balance = <Balance<T>>::get(collection_id, owner.as_sub())2160 .checked_sub(value)2161 .ok_or(Error::<T>::NumOverflow)?;2162 <Balance<T>>::insert(collection_id, owner.as_sub(), new_balance);21632164 if balance.value - value > 0 {2165 balance.value -= value;2166 <FungibleItemList<T>>::insert(collection_id, owner.as_sub(), balance);2167 }2168 else {2169 <FungibleItemList<T>>::remove(collection_id, owner.as_sub());2170 }21712172 Ok(())2173 }21742175 pub fn get_collection(collection_id: CollectionId) -> Result<CollectionHandle<T>, sp_runtime::DispatchError> {2176 Ok(<CollectionById<T>>::get(collection_id)2177 .map(|collection| CollectionHandle {2178 id: collection_id,2179 collection2180 })2181 .ok_or(Error::<T>::CollectionNotFound)?)2182 }21832184 fn save_collection(collection: CollectionHandle<T>) {2185 <CollectionById<T>>::insert(collection.id, collection.collection);2186 }21872188 fn check_owner_permissions(target_collection: &CollectionHandle<T>, subject: T::AccountId) -> DispatchResult {2189 ensure!(2190 subject == target_collection.owner,2191 Error::<T>::NoPermission2192 );21932194 Ok(())2195 }21962197 fn is_owner_or_admin_permissions(collection: &CollectionHandle<T>, subject: T::AccountId) -> bool {2198 subject == collection.owner || <AdminList<T>>::get(collection.id).contains(&subject)2199 }22002201 fn check_owner_or_admin_permissions(2202 collection: &CollectionHandle<T>,2203 subject: T::AccountId,2204 ) -> DispatchResult {2205 ensure!(Self::is_owner_or_admin_permissions(collection, subject), Error::<T>::NoPermission);22062207 Ok(())2208 }22092210 fn owned_amount(2211 subject: T::AccountId,2212 target_collection: &CollectionHandle<T>,2213 item_id: TokenId,2214 ) -> Option<u128> {2215 let collection_id = target_collection.id;22162217 match target_collection.mode {2218 CollectionMode::NFT => (<NftItemList<T>>::get(collection_id, item_id)?.owner == subject)2219 .then(|| 1),2220 CollectionMode::Fungible(_) => Some(<FungibleItemList<T>>::get(collection_id, &subject)2221 .value),2222 CollectionMode::ReFungible => <ReFungibleItemList<T>>::get(collection_id, item_id)?2223 .owner2224 .iter()2225 .find(|i| i.owner == subject)2226 .map(|i| i.fraction),2227 CollectionMode::Invalid => None,2228 }2229 }22302231 fn is_item_owner(subject: T::AccountId, target_collection: &CollectionHandle<T>, item_id: TokenId) -> bool {2232 match target_collection.mode {2233 CollectionMode::Fungible(_) => true,2234 _ => Self::owned_amount(subject, target_collection, item_id).is_some(),2235 }2236 }22372238 fn check_white_list(collection: &CollectionHandle<T>, address: &T::AccountId) -> DispatchResult {2239 let collection_id = collection.id;22402241 let mes = Error::<T>::AddresNotInWhiteList;2242 ensure!(<WhiteList<T>>::contains_key(collection_id, address), mes);22432244 Ok(())2245 }22462247 /// Check if token exists. In case of Fungible, check if there is an entry for 2248 /// the owner in fungible balances double map2249 fn token_exists(2250 target_collection: &CollectionHandle<T>,2251 item_id: TokenId,2252 ) -> DispatchResult {2253 let collection_id = target_collection.id;2254 let exists = match target_collection.mode2255 {2256 CollectionMode::NFT => <NftItemList<T>>::contains_key(collection_id, item_id),2257 CollectionMode::Fungible(_) => true,2258 CollectionMode::ReFungible => <ReFungibleItemList<T>>::contains_key(collection_id, item_id),2259 _ => false2260 };22612262 ensure!(exists == true, Error::<T>::TokenNotFound);2263 Ok(())2264 }22652266 fn transfer_fungible(2267 collection: &CollectionHandle<T>,2268 value: u128,2269 owner: &T::CrossAccountId,2270 recipient: &T::CrossAccountId,2271 ) -> DispatchResult {2272 let collection_id = collection.id;22732274 let mut balance = <FungibleItemList<T>>::get(collection_id, owner.as_sub());2275 ensure!(balance.value >= value, Error::<T>::TokenValueTooLow);22762277 // Send balance to recipient (updates balanceOf of recipient)2278 Self::add_fungible_item(collection, recipient, value)?;22792280 // update balanceOf of sender2281 <Balance<T>>::insert(collection_id, owner.as_sub(), balance.value - value);22822283 // Reduce or remove sender2284 if balance.value == value {2285 <FungibleItemList<T>>::remove(collection_id, owner.as_sub());2286 }2287 else {2288 balance.value -= value;2289 <FungibleItemList<T>>::insert(collection_id, owner.as_sub(), balance);2290 }22912292 Self::deposit_event(RawEvent::Transfer(collection.id, 1, owner.clone(), recipient.clone(), value));22932294 Ok(())2295 }22962297 fn transfer_refungible(2298 collection: &CollectionHandle<T>,2299 item_id: TokenId,2300 value: u128,2301 owner: T::CrossAccountId,2302 new_owner: T::CrossAccountId,2303 ) -> DispatchResult {2304 let collection_id = collection.id;2305 let full_item = <ReFungibleItemList<T>>::get(collection_id, item_id)2306 .ok_or(Error::<T>::TokenNotFound)?;23072308 let item = full_item2309 .owner2310 .iter()2311 .filter(|i| i.owner == owner)2312 .next()2313 .ok_or(Error::<T>::TokenNotFound)?;2314 let amount = item.fraction;23152316 ensure!(amount >= value, Error::<T>::TokenValueTooLow);23172318 // update balance2319 let balance_old_owner = <Balance<T>>::get(collection_id, item.owner.as_sub())2320 .checked_sub(value)2321 .ok_or(Error::<T>::NumOverflow)?;2322 <Balance<T>>::insert(collection_id, item.owner.as_sub(), balance_old_owner);23232324 let balance_new_owner = <Balance<T>>::get(collection_id, new_owner.as_sub())2325 .checked_add(value)2326 .ok_or(Error::<T>::NumOverflow)?;2327 <Balance<T>>::insert(collection_id, new_owner.as_sub(), balance_new_owner);23282329 let old_owner = item.owner.clone();2330 let new_owner_has_account = full_item.owner.iter().any(|i| i.owner == new_owner);23312332 // transfer2333 if amount == value && !new_owner_has_account {2334 // change owner2335 // new owner do not have account2336 let mut new_full_item = full_item.clone();2337 new_full_item2338 .owner2339 .iter_mut()2340 .find(|i| i.owner == owner)2341 .expect("old owner does present in refungible")2342 .owner = new_owner.clone();2343 <ReFungibleItemList<T>>::insert(collection_id, item_id, new_full_item);23442345 // update index collection2346 Self::move_token_index(collection_id, item_id, &old_owner, &new_owner)?;2347 } else {2348 let mut new_full_item = full_item.clone();2349 new_full_item2350 .owner2351 .iter_mut()2352 .find(|i| i.owner == owner)2353 .expect("old owner does present in refungible")2354 .fraction -= value;23552356 // separate amount2357 if new_owner_has_account {2358 // new owner has account2359 new_full_item2360 .owner2361 .iter_mut()2362 .find(|i| i.owner == new_owner)2363 .expect("new owner has account")2364 .fraction += value;2365 } else {2366 // new owner do not have account2367 new_full_item.owner.push(Ownership {2368 owner: new_owner.clone(),2369 fraction: value,2370 });2371 Self::add_token_index(collection_id, item_id, &new_owner)?;2372 }23732374 <ReFungibleItemList<T>>::insert(collection_id, item_id, new_full_item);2375 }23762377 Self::deposit_event(RawEvent::Transfer(collection.id, item_id, owner, new_owner, amount));23782379 Ok(())2380 }23812382 fn transfer_nft(2383 collection: &CollectionHandle<T>,2384 item_id: TokenId,2385 sender: T::CrossAccountId,2386 new_owner: T::CrossAccountId,2387 ) -> DispatchResult {2388 let collection_id = collection.id;2389 let mut item = <NftItemList<T>>::get(collection_id, item_id)2390 .ok_or(Error::<T>::TokenNotFound)?;23912392 ensure!(2393 sender == item.owner,2394 Error::<T>::MustBeTokenOwner2395 );23962397 // update balance2398 let balance_old_owner = <Balance<T>>::get(collection_id, item.owner.as_sub())2399 .checked_sub(1)2400 .ok_or(Error::<T>::NumOverflow)?;2401 <Balance<T>>::insert(collection_id, item.owner.as_sub(), balance_old_owner);24022403 let balance_new_owner = <Balance<T>>::get(collection_id, new_owner.as_sub())2404 .checked_add(1)2405 .ok_or(Error::<T>::NumOverflow)?;2406 <Balance<T>>::insert(collection_id, new_owner.as_sub(), balance_new_owner);24072408 // change owner2409 let old_owner = item.owner.clone();2410 item.owner = new_owner.clone();2411 <NftItemList<T>>::insert(collection_id, item_id, item);24122413 // update index collection2414 Self::move_token_index(collection_id, item_id, &old_owner, &new_owner)?;24152416 Self::deposit_event(RawEvent::Transfer(collection.id, item_id, sender, new_owner, 1));24172418 Ok(())2419 }2420 2421 fn set_re_fungible_variable_data(2422 collection: &CollectionHandle<T>,2423 item_id: TokenId,2424 data: Vec<u8>2425 ) -> DispatchResult {2426 let collection_id = collection.id;2427 let mut item = <ReFungibleItemList<T>>::get(collection_id, item_id)2428 .ok_or(Error::<T>::TokenNotFound)?;24292430 item.variable_data = data;24312432 <ReFungibleItemList<T>>::insert(collection_id, item_id, item);24332434 Ok(())2435 }24362437 fn set_nft_variable_data(2438 collection: &CollectionHandle<T>,2439 item_id: TokenId,2440 data: Vec<u8>2441 ) -> DispatchResult {2442 let collection_id = collection.id;2443 let mut item = <NftItemList<T>>::get(collection_id, item_id)2444 .ok_or(Error::<T>::TokenNotFound)?;2445 2446 item.variable_data = data;24472448 <NftItemList<T>>::insert(collection_id, item_id, item);2449 2450 Ok(())2451 }24522453 fn init_collection(item: &Collection<T>) {2454 // check params2455 assert!(2456 item.decimal_points <= MAX_DECIMAL_POINTS,2457 "decimal_points parameter must be lower than MAX_DECIMAL_POINTS"2458 );2459 assert!(2460 item.name.len() <= 64,2461 "Collection name can not be longer than 63 char"2462 );2463 assert!(2464 item.name.len() <= 256,2465 "Collection description can not be longer than 255 char"2466 );2467 assert!(2468 item.token_prefix.len() <= 16,2469 "Token prefix can not be longer than 15 char"2470 );24712472 // Generate next collection ID2473 let next_id = CreatedCollectionCount::get()2474 .checked_add(1)2475 .unwrap();24762477 CreatedCollectionCount::put(next_id);2478 }24792480 fn init_nft_token(collection_id: CollectionId, item: &NftItemType<T::AccountId>) {2481 let current_index = <ItemListIndex>::get(collection_id)2482 .checked_add(1)2483 .unwrap();24842485 let item_owner = item.owner.clone();2486 Self::add_token_index(collection_id, current_index, &item.owner).unwrap();24872488 <ItemListIndex>::insert(collection_id, current_index);24892490 // Update balance2491 let new_balance = <Balance<T>>::get(collection_id, &item_owner)2492 .checked_add(1)2493 .unwrap();2494 <Balance<T>>::insert(collection_id, item_owner.clone(), new_balance);2495 }24962497 fn init_fungible_token(collection_id: CollectionId, owner: &T::AccountId, item: &FungibleItemType) {2498 let current_index = <ItemListIndex>::get(collection_id)2499 .checked_add(1)2500 .unwrap();25012502 Self::add_token_index(collection_id, current_index, owner).unwrap();25032504 <ItemListIndex>::insert(collection_id, current_index);25052506 // Update balance2507 let new_balance = <Balance<T>>::get(collection_id, owner)2508 .checked_add(item.value)2509 .unwrap();2510 <Balance<T>>::insert(collection_id, (*owner).clone(), new_balance);2511 }25122513 fn init_refungible_token(collection_id: CollectionId, item: &ReFungibleItemType<T::AccountId>) {2514 let current_index = <ItemListIndex>::get(collection_id)2515 .checked_add(1)2516 .unwrap();25172518 let value = item.owner.first().unwrap().fraction;2519 let owner = item.owner.first().unwrap().owner.clone();25202521 Self::add_token_index(collection_id, current_index, &owner).unwrap();25222523 <ItemListIndex>::insert(collection_id, current_index);25242525 // Update balance2526 let new_balance = <Balance<T>>::get(collection_id, &owner)2527 .checked_add(value)2528 .unwrap();2529 <Balance<T>>::insert(collection_id, owner.clone(), new_balance);2530 }25312532 fn add_token_index(collection_id: CollectionId, item_index: TokenId, owner: &T::AccountId) -> DispatchResult {2533 // add to account limit2534 if <AccountItemCount<T>>::contains_key(owner) {25352536 // bound Owned tokens by a single address2537 let count = <AccountItemCount<T>>::get(owner);2538 ensure!(count < ChainLimit::get().account_token_ownership_limit, Error::<T>::AddressOwnershipLimitExceeded);25392540 <AccountItemCount<T>>::insert(owner.clone(), count2541 .checked_add(1)2542 .ok_or(Error::<T>::NumOverflow)?);2543 }2544 else {2545 <AccountItemCount<T>>::insert(owner.clone(), 1);2546 }25472548 let list_exists = <AddressTokens<T>>::contains_key(collection_id, owner);2549 if list_exists {2550 let mut list = <AddressTokens<T>>::get(collection_id, owner);2551 let item_contains = list.contains(&item_index.clone());25522553 if !item_contains {2554 list.push(item_index.clone());2555 }25562557 <AddressTokens<T>>::insert(collection_id, owner.clone(), list);2558 } else {2559 let mut itm = Vec::new();2560 itm.push(item_index.clone());2561 <AddressTokens<T>>::insert(collection_id, owner.clone(), itm);2562 }25632564 Ok(())2565 }25662567 fn remove_token_index(2568 collection_id: CollectionId,2569 item_index: TokenId,2570 owner: &T::AccountId,2571 ) -> DispatchResult {25722573 // update counter2574 <AccountItemCount<T>>::insert(owner.clone(), 2575 <AccountItemCount<T>>::get(owner)2576 .checked_sub(1)2577 .ok_or(Error::<T>::NumOverflow)?);257825792580 let list_exists = <AddressTokens<T>>::contains_key(collection_id, owner);2581 if list_exists {2582 let mut list = <AddressTokens<T>>::get(collection_id, owner);2583 let item_contains = list.contains(&item_index.clone());25842585 if item_contains {2586 list.retain(|&item| item != item_index);2587 <AddressTokens<T>>::insert(collection_id, owner.clone(), list);2588 }2589 }25902591 Ok(())2592 }25932594 fn move_token_index(2595 collection_id: CollectionId,2596 item_index: TokenId,2597 old_owner: &T::AccountId,2598 new_owner: &T::AccountId,2599 ) -> DispatchResult {2600 Self::remove_token_index(collection_id, item_index, old_owner)?;2601 Self::add_token_index(collection_id, item_index, new_owner)?;26022603 Ok(())2604 }2605 2606 fn ensure_contract_owned(account: T::AccountId, contract: &T::AccountId) -> DispatchResult {2607 ensure!(<ContractOwner<T>>::get(contract) == Some(account), Error::<T>::NoPermission);26082609 Ok(())2610 }2611}26122613////////////////////////////////////////////////////////////////////////////////////////////////////2614// Economic models2615// #region26162617/// Fee multiplier.2618pub type Multiplier = FixedU128;26192620type BalanceOf<T> = <<T as pallet_transaction_payment::Config>::OnChargeTransaction as pallet_transaction_payment::OnChargeTransaction<T>>::Balance;26212622/// Require the transactor pay for themselves and maybe include a tip to gain additional priority2623/// in the queue.2624#[derive(Encode, Decode, Clone, Eq, PartialEq)]2625pub struct ChargeTransactionPayment<T: Config>(#[codec(compact)] BalanceOf<T>);26262627impl<T: Config + Send + Sync> sp_std::fmt::Debug 2628 for ChargeTransactionPayment<T>2629{2630 #[cfg(feature = "std")]2631 fn fmt(&self, f: &mut sp_std::fmt::Formatter) -> sp_std::fmt::Result {2632 write!(f, "ChargeTransactionPayment<{:?}>", self.0)2633 }2634 #[cfg(not(feature = "std"))]2635 fn fmt(&self, _: &mut sp_std::fmt::Formatter) -> sp_std::fmt::Result {2636 Ok(())2637 }2638}26392640impl<T: Config> ChargeTransactionPayment<T>2641where2642 T::Call: Dispatchable<Info=DispatchInfo, PostInfo=PostDispatchInfo> + IsSubType<Call<T>> + IsSubType<pallet_contracts::Call<T>>,2643 BalanceOf<T>: Send + Sync + From<u64> + FixedPointOperand,2644 T::AccountId: AsRef<[u8]>,2645 T::AccountId: UncheckedFrom<T::Hash>,2646{2647 fn traditional_fee(2648 len: usize,2649 info: &DispatchInfoOf<T::Call>,2650 tip: BalanceOf<T>,2651 ) -> BalanceOf<T>2652 where2653 T::Call: Dispatchable<Info = DispatchInfo>,2654 {2655 <pallet_transaction_payment::Module<T>>::compute_fee(len as u32, info, tip)2656 }26572658 fn get_priority(len: usize, info: &DispatchInfoOf<T::Call>, final_fee: BalanceOf<T>) -> TransactionPriority {2659 let weight_saturation = T::BlockWeights::get().max_block / info.weight.max(1);2660 let max_block_length = *T::BlockLength::get().max.get(DispatchClass::Normal);2661 let len_saturation = max_block_length as u64 / (len as u64).max(1);2662 let coefficient: BalanceOf<T> = weight_saturation2663 .min(len_saturation)2664 .saturated_into::<BalanceOf<T>>();2665 final_fee2666 .saturating_mul(coefficient)2667 .saturated_into::<TransactionPriority>()2668 }26692670 fn withdraw_fee(2671 &self,2672 who: &T::AccountId,2673 call: &T::Call,2674 info: &DispatchInfoOf<T::Call>,2675 len: usize,2676 ) -> Result<2677 (2678 BalanceOf<T>,2679 <<T as pallet_transaction_payment::Config>::OnChargeTransaction as pallet_transaction_payment::OnChargeTransaction<T>>::LiquidityInfo,2680 ),2681 TransactionValidityError,2682 > {2683 let tip = self.0;26842685 let fee = Self::traditional_fee(len, info, tip);26862687 // Only mess with balances if fee is not zero.2688 if fee.is_zero() {2689 return <<T as pallet_transaction_payment::Config>::OnChargeTransaction as pallet_transaction_payment::OnChargeTransaction<T>>::withdraw_fee(who, call, info, fee, tip)2690 .map(|i| (fee, i));2691 }26922693 // Determine who is paying transaction fee based on ecnomic model2694 // Parse call to extract collection ID and access collection sponsor2695 let mut sponsor: Option<T::AccountId> = (|| match IsSubType::<Call<T>>::is_sub_type(call) {2696 Some(Call::create_item(collection_id, _owner, _properties)) => {2697 let collection = <CollectionById<T>>::get(collection_id)?;26982699 // sponsor timeout2700 let block_number = <system::Module<T>>::block_number() as T::BlockNumber;27012702 let limit = collection.limits.sponsor_transfer_timeout;2703 if <CreateItemBasket<T>>::contains_key((collection_id, &who)) {2704 let last_tx_block = <CreateItemBasket<T>>::get((collection_id, &who));2705 let limit_time = last_tx_block + limit.into();2706 if block_number <= limit_time {2707 return None;2708 }2709 }2710 <CreateItemBasket<T>>::insert((collection_id, who.clone()), block_number);27112712 // check free create limit2713 if collection.limits.sponsored_data_size >= (_properties.len() as u32) {2714 collection.sponsorship.sponsor()2715 .cloned()2716 } else {2717 None2718 }2719 }2720 Some(Call::transfer(_new_owner, collection_id, item_id, _value)) => {2721 let collection = <CollectionById<T>>::get(collection_id)?;2722 2723 let mut sponsor_transfer = false;2724 if collection.sponsorship.confirmed() {27252726 let collection_limits = collection.limits;2727 let collection_mode = collection.mode;2728 2729 // sponsor timeout2730 let block_number = <system::Module<T>>::block_number() as T::BlockNumber;2731 sponsor_transfer = match collection_mode {2732 CollectionMode::NFT => {2733 2734 // get correct limit2735 let limit: u32 = if collection_limits.sponsor_transfer_timeout > 0 {2736 collection_limits.sponsor_transfer_timeout2737 } else {2738 ChainLimit::get().nft_sponsor_transfer_timeout2739 };2740 2741 let mut sponsored = true;2742 if <NftTransferBasket<T>>::contains_key(collection_id, item_id) {2743 let last_tx_block = <NftTransferBasket<T>>::get(collection_id, item_id);2744 let limit_time = last_tx_block + limit.into();2745 if block_number <= limit_time {2746 sponsored = false;2747 }2748 }2749 if sponsored {2750 <NftTransferBasket<T>>::insert(collection_id, item_id, block_number);2751 }27522753 sponsored2754 }2755 CollectionMode::Fungible(_) => {2756 2757 // get correct limit2758 let limit: u32 = if collection_limits.sponsor_transfer_timeout > 0 {2759 collection_limits.sponsor_transfer_timeout2760 } else {2761 ChainLimit::get().fungible_sponsor_transfer_timeout2762 };2763 2764 let block_number = <system::Module<T>>::block_number() as T::BlockNumber;2765 let mut sponsored = true;2766 if <FungibleTransferBasket<T>>::contains_key(collection_id, who) {2767 let last_tx_block = <FungibleTransferBasket<T>>::get(collection_id, who);2768 let limit_time = last_tx_block + limit.into();2769 if block_number <= limit_time {2770 sponsored = false;2771 }2772 }2773 if sponsored {2774 <FungibleTransferBasket<T>>::insert(collection_id, who, block_number);2775 }27762777 sponsored2778 }2779 CollectionMode::ReFungible => {2780 2781 // get correct limit2782 let limit: u32 = if collection_limits.sponsor_transfer_timeout > 0 {2783 collection_limits.sponsor_transfer_timeout2784 } else {2785 ChainLimit::get().refungible_sponsor_transfer_timeout2786 };2787 2788 let mut sponsored = true;2789 if <ReFungibleTransferBasket<T>>::contains_key(collection_id, item_id) {2790 let last_tx_block = <ReFungibleTransferBasket<T>>::get(collection_id, item_id);2791 let limit_time = last_tx_block + limit.into();2792 if block_number <= limit_time {2793 sponsored = false;2794 }2795 }2796 if sponsored {2797 <ReFungibleTransferBasket<T>>::insert(collection_id, item_id, block_number);2798 }27992800 sponsored2801 }2802 _ => {2803 false2804 },2805 };2806 }28072808 if !sponsor_transfer {2809 None2810 } else {2811 collection.sponsorship.sponsor()2812 .cloned()2813 }2814 }28152816 Some(Call::set_variable_meta_data(collection_id, item_id, data)) => {2817 let mut sponsor_metadata_changes = false;28182819 let collection = <CollectionById<T>>::get(collection_id)?;28202821 if2822 collection.sponsorship.confirmed() &&2823 // Can't sponsor fungible collection, this tx will be rejected2824 // as invalid2825 !matches!(collection.mode, CollectionMode::Fungible(_)) &&2826 data.len() <= collection.limits.sponsored_data_size as usize2827 {2828 if let Some(rate_limit) = collection.limits.sponsored_data_rate_limit {2829 let block_number = <system::Module<T>>::block_number() as T::BlockNumber;28302831 if <VariableMetaDataBasket<T>>::get(collection_id, item_id)2832 .map(|last_block| block_number - last_block > rate_limit)2833 .unwrap_or(true) 2834 {2835 sponsor_metadata_changes = true;2836 <VariableMetaDataBasket<T>>::insert(collection_id, item_id, block_number);2837 }2838 }2839 }28402841 if !sponsor_metadata_changes {2842 None2843 } else {2844 collection.sponsorship.sponsor().cloned()2845 }2846 }28472848 _ => None,2849 })();28502851 match IsSubType::<pallet_contracts::Call<T>>::is_sub_type(call) {2852 Some(pallet_contracts::Call::call(dest, _value, _gas_limit, _data)) => {28532854 let called_contract: T::AccountId = T::Lookup::lookup((*dest).clone()).unwrap_or(T::AccountId::default());28552856 let owned_contract = <ContractOwner<T>>::get(called_contract.clone()).as_ref() == Some(who);2857 let white_list_enabled = <ContractWhiteListEnabled<T>>::contains_key(called_contract.clone());2858 2859 if !owned_contract && white_list_enabled {2860 if !<ContractWhiteList<T>>::contains_key(called_contract.clone(), who) {2861 return Err(InvalidTransaction::Call.into());2862 }2863 }2864 },2865 _ => {},2866 }28672868 // Sponsor smart contracts2869 sponsor = sponsor.or_else(|| match IsSubType::<pallet_contracts::Call<T>>::is_sub_type(call) {28702871 // On instantiation: set the contract owner2872 Some(pallet_contracts::Call::instantiate(_endowment, _gas_limit, code_hash, _data, salt)) => {28732874 let new_contract_address = <pallet_contracts::Module<T>>::contract_address(2875 &who,2876 code_hash,2877 salt,2878 );2879 <ContractOwner<T>>::insert(new_contract_address.clone(), who.clone());28802881 None2882 },28832884 // On instantiation with code: set the contract owner2885 Some(pallet_contracts::Call::instantiate_with_code(_endowment, _gas_limit, _code, _data, _salt)) => {28862887 let new_contract_address = <pallet_contracts::Module<T>>::contract_address(2888 &who,2889 &T::Hashing::hash(&_code),2890 _salt,2891 );28922893 <ContractOwner<T>>::insert(new_contract_address.clone(), who.clone());28942895 None2896 }28972898 // When the contract is called, check if the sponsoring is enabled and pay fees from contract endowment if it is2899 Some(pallet_contracts::Call::call(dest, _value, _gas_limit, _data)) => {29002901 let called_contract: T::AccountId = T::Lookup::lookup((*dest).clone()).unwrap_or(T::AccountId::default());29022903 let mut sponsor_transfer = false;2904 if <ContractSponsoringRateLimit<T>>::contains_key(called_contract.clone()) {2905 let last_tx_block = <ContractSponsorBasket<T>>::get((&called_contract, &who));2906 let block_number = <system::Module<T>>::block_number() as T::BlockNumber;2907 let rate_limit = <ContractSponsoringRateLimit<T>>::get(&called_contract);2908 let limit_time = last_tx_block + rate_limit;29092910 if block_number >= limit_time {2911 <ContractSponsorBasket<T>>::insert((called_contract.clone(), who.clone()), block_number);2912 sponsor_transfer = true;2913 }2914 } else {2915 sponsor_transfer = false;2916 }2917 2918 if sponsor_transfer {2919 if <ContractSelfSponsoring<T>>::contains_key(called_contract.clone()) {2920 if <ContractSelfSponsoring<T>>::get(called_contract.clone()) {2921 return Some(called_contract);2922 }2923 }2924 }29252926 None2927 },29282929 _ => None,2930 });29312932 let who_pays_fee = sponsor.unwrap_or_else(|| who.clone());29332934 <<T as pallet_transaction_payment::Config>::OnChargeTransaction as pallet_transaction_payment::OnChargeTransaction<T>>::withdraw_fee(&who_pays_fee, call, info, fee, tip)2935 .map(|i| (fee, i))2936 }2937}293829392940impl<T: Config + Send + Sync> SignedExtension2941 for ChargeTransactionPayment<T>2942where2943 BalanceOf<T>: Send + Sync + From<u64> + FixedPointOperand,2944 T::Call: Dispatchable<Info = DispatchInfo, PostInfo = PostDispatchInfo> + IsSubType<Call<T>> + IsSubType<pallet_contracts::Call<T>>,2945 T::AccountId: AsRef<[u8]>,2946 T::AccountId: UncheckedFrom<T::Hash>,2947{2948 const IDENTIFIER: &'static str = "ChargeTransactionPayment";2949 type AccountId = T::AccountId;2950 type Call = T::Call;2951 type AdditionalSigned = ();2952 type Pre = (2953 // tip2954 BalanceOf<T>,2955 // who pays fee2956 Self::AccountId,2957 // imbalance resulting from withdrawing the fee2958 <<T as pallet_transaction_payment::Config>::OnChargeTransaction as pallet_transaction_payment::OnChargeTransaction<T>>::LiquidityInfo,2959 );2960 fn additional_signed(&self) -> sp_std::result::Result<(), TransactionValidityError> {2961 Ok(())2962 }29632964 fn validate(2965 &self,2966 who: &Self::AccountId,2967 call: &Self::Call,2968 info: &DispatchInfoOf<Self::Call>,2969 len: usize,2970 ) -> TransactionValidity {2971 let (fee, _) = self.withdraw_fee(who, call, info, len)?;2972 Ok(ValidTransaction {2973 priority: Self::get_priority(len, info, fee),2974 ..Default::default()2975 })2976 }29772978 fn pre_dispatch(2979 self,2980 who: &Self::AccountId,2981 call: &Self::Call,2982 info: &DispatchInfoOf<Self::Call>,2983 len: usize,2984 ) -> Result<Self::Pre, TransactionValidityError> {2985 let (_fee, imbalance) = self.withdraw_fee(who, call, info, len)?;2986 Ok((self.0, who.clone(), imbalance))2987 }29882989 fn post_dispatch(2990 pre: Self::Pre,2991 info: &DispatchInfoOf<Self::Call>,2992 post_info: &PostDispatchInfoOf<Self::Call>,2993 len: usize,2994 _result: &DispatchResult,2995 ) -> Result<(), TransactionValidityError> {2996 let (tip, who, imbalance) = pre;2997 let actual_fee = pallet_transaction_payment::Module::<T>::compute_actual_fee(2998 len as u32,2999 info,3000 post_info,3001 tip,3002 );3003 <T as pallet_transaction_payment::Config>::OnChargeTransaction::correct_and_deposit_fee(&who, info, post_info, actual_fee, tip, imbalance)?;3004 Ok(())3005 }3006}30073008// #endregion30093010sp_api::decl_runtime_apis! {3011 pub trait NftApi {3012 /// Used for ethereum integration3013 fn eth_contract_code(account: H160) -> Option<Vec<u8>>;3014 }3015}