difftreelog
feat explicit collection creation fee
in: master
2 files changed
pallets/nft/src/lib.rsdiffbeforeafterboth1//2// This file is subject to the terms and conditions defined in3// file 'LICENSE', which is part of this source code package.4//56#![recursion_limit = "1024"]78#![cfg_attr(not(feature = "std"), no_std)]910#[cfg(feature = "std")]11pub use std::*;1213#[cfg(feature = "std")]14pub use serde::*;1516use codec::{Decode, Encode};17pub use frame_support::{18 construct_runtime, decl_event, decl_module, decl_storage, decl_error,19 dispatch::DispatchResult,20 ensure, fail, parameter_types,21 traits::{22 Currency, ExistenceRequirement, Get, Imbalance, KeyOwnerProofSystem, OnUnbalanced,23 Randomness, IsSubType,24 },25 weights::{26 constants::{BlockExecutionWeight, ExtrinsicBaseWeight, RocksDbWeight, WEIGHT_PER_SECOND},27 DispatchInfo, GetDispatchInfo, IdentityFee, Pays, PostDispatchInfo, Weight,28 WeightToFeePolynomial, DispatchClass,29 },30 StorageValue,31 transactional,32};3334use frame_system::{self as system, ensure_signed, ensure_root};35use sp_runtime::sp_std::prelude::Vec;36use sp_runtime::{37 traits::{38 Hash, DispatchInfoOf, Dispatchable, PostDispatchInfoOf, Saturating, SaturatedConversion, SignedExtension, Zero,39 },40 transaction_validity::{41 TransactionPriority, InvalidTransaction, TransactionValidity, TransactionValidityError, ValidTransaction,42 },43 FixedPointOperand, FixedU128,44};45use sp_runtime::traits::StaticLookup;46use pallet_contracts::chain_extension::UncheckedFrom;47use pallet_transaction_payment::OnChargeTransaction;4849#[cfg(test)]50mod mock;5152#[cfg(test)]53mod tests;5455mod default_weights;5657pub const MAX_DECIMAL_POINTS: DecimalPoints = 30;58pub const MAX_REFUNGIBLE_PIECES: u128 = 1_000_000_000_000_000_000_000;59pub const MAX_SPONSOR_TIMEOUT: u32 = 10_368_000;60pub const MAX_TOKEN_OWNERSHIP: u32 = 10_000_000;6162// Structs63// #region6465pub type CollectionId = u32;66pub type TokenId = u32;67pub type DecimalPoints = u8;6869#[derive(Encode, Decode, Eq, Debug, Clone, PartialEq)]70#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]71pub enum CollectionMode {72 Invalid,73 NFT,74 // decimal points75 Fungible(DecimalPoints),76 ReFungible,77}7879impl Default for CollectionMode {80 fn default() -> Self {81 Self::Invalid82 }83}8485impl Into<u8> for CollectionMode {86 fn into(self) -> u8 {87 match self {88 CollectionMode::Invalid => 0,89 CollectionMode::NFT => 1,90 CollectionMode::Fungible(_) => 2,91 CollectionMode::ReFungible => 3,92 }93 }94}9596#[derive(Encode, Decode, Eq, Debug, Clone, PartialEq)]97#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]98pub enum AccessMode {99 Normal,100 WhiteList,101}102impl Default for AccessMode {103 fn default() -> Self {104 Self::Normal105 }106}107108#[derive(Encode, Decode, Eq, Debug, Clone, PartialEq)]109#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]110pub enum SchemaVersion {111 ImageURL,112 Unique,113}114impl Default for SchemaVersion {115 fn default() -> Self {116 Self::ImageURL117 }118}119120#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]121#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]122pub struct Ownership<AccountId> {123 pub owner: AccountId,124 pub fraction: u128,125}126127#[derive(Encode, Decode, Debug, Clone, PartialEq)]128#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]129pub enum SponsorshipState<AccountId> {130 /// The fees are applied to the transaction sender131 Disabled,132 Unconfirmed(AccountId),133 /// Transactions are sponsored by specified account134 Confirmed(AccountId),135}136137impl<AccountId> SponsorshipState<AccountId> {138 fn sponsor(&self) -> Option<&AccountId> {139 match self {140 Self::Confirmed(sponsor) => Some(sponsor),141 _ => None,142 }143 }144145 fn pending_sponsor(&self) -> Option<&AccountId> {146 match self {147 Self::Unconfirmed(sponsor) | Self::Confirmed(sponsor) => Some(sponsor),148 _ => None,149 }150 }151152 fn confirmed(&self) -> bool {153 matches!(self, Self::Confirmed(_))154 }155}156157impl<T> Default for SponsorshipState<T> {158 fn default() -> Self {159 Self::Disabled160 }161}162163#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]164#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]165pub struct CollectionType<AccountId> {166 pub owner: AccountId,167 pub mode: CollectionMode,168 pub access: AccessMode,169 pub decimal_points: DecimalPoints,170 pub name: Vec<u16>, // 64 include null escape char171 pub description: Vec<u16>, // 256 include null escape char172 pub token_prefix: Vec<u8>, // 16 include null escape char173 pub mint_mode: bool,174 pub offchain_schema: Vec<u8>,175 pub schema_version: SchemaVersion,176 pub sponsorship: SponsorshipState<AccountId>,177 pub limits: CollectionLimits, // Collection private restrictions 178 pub variable_on_chain_schema: Vec<u8>, //179 pub const_on_chain_schema: Vec<u8>, //180}181182#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]183#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]184pub struct NftItemType<AccountId> {185 pub owner: AccountId,186 pub const_data: Vec<u8>,187 pub variable_data: Vec<u8>,188}189190#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]191#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]192pub struct FungibleItemType {193 pub value: u128,194}195196#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]197#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]198pub struct ReFungibleItemType<AccountId> {199 pub owner: Vec<Ownership<AccountId>>,200 pub const_data: Vec<u8>,201 pub variable_data: Vec<u8>,202}203204// #[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]205// #[cfg_attr(feature = "std", derive(Serialize, Deserialize))]206// pub struct VestingItem<AccountId, Moment> {207// pub sender: AccountId,208// pub recipient: AccountId,209// pub collection_id: CollectionId,210// pub item_id: TokenId,211// pub amount: u64,212// pub vesting_date: Moment,213// }214215#[derive(Encode, Decode, Debug, Clone, PartialEq)]216#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]217pub struct CollectionLimits {218 pub account_token_ownership_limit: u32,219 pub sponsored_data_size: u32,220 pub token_limit: u32,221222 // Timeouts for item types in passed blocks223 pub sponsor_transfer_timeout: u32,224 pub owner_can_transfer: bool,225 pub owner_can_destroy: bool,226}227228impl Default for CollectionLimits {229 fn default() -> CollectionLimits {230 CollectionLimits { 231 account_token_ownership_limit: 10_000_000, 232 token_limit: u32::max_value(),233 sponsored_data_size: u32::MAX,234 sponsor_transfer_timeout: 14400,235 owner_can_transfer: true,236 owner_can_destroy: true237 }238 }239}240241#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]242#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]243pub struct ChainLimits {244 pub collection_numbers_limit: u32,245 pub account_token_ownership_limit: u32,246 pub collections_admins_limit: u64,247 pub custom_data_limit: u32,248249 // Timeouts for item types in passed blocks250 pub nft_sponsor_transfer_timeout: u32,251 pub fungible_sponsor_transfer_timeout: u32,252 pub refungible_sponsor_transfer_timeout: u32,253254 // Schema limits255 pub offchain_schema_limit: u32,256 pub variable_on_chain_schema_limit: u32,257 pub const_on_chain_schema_limit: u32,258}259260pub trait WeightInfo {261 fn create_collection() -> Weight;262 fn destroy_collection() -> Weight;263 fn add_to_white_list() -> Weight;264 fn remove_from_white_list() -> Weight;265 fn set_public_access_mode() -> Weight;266 fn set_mint_permission() -> Weight;267 fn change_collection_owner() -> Weight;268 fn add_collection_admin() -> Weight;269 fn remove_collection_admin() -> Weight;270 fn set_collection_sponsor() -> Weight;271 fn confirm_sponsorship() -> Weight;272 fn remove_collection_sponsor() -> Weight;273 fn create_item(s: usize) -> Weight;274 fn burn_item() -> Weight;275 fn transfer() -> Weight;276 fn approve() -> Weight;277 fn transfer_from() -> Weight;278 fn set_offchain_schema() -> Weight;279 fn set_const_on_chain_schema() -> Weight;280 fn set_variable_on_chain_schema() -> Weight;281 fn set_variable_meta_data() -> Weight;282 fn enable_contract_sponsoring() -> Weight;283 fn set_schema_version() -> Weight;284 fn set_chain_limits() -> Weight;285 fn set_contract_sponsoring_rate_limit() -> Weight;286 fn toggle_contract_white_list() -> Weight;287 fn add_to_contract_white_list() -> Weight;288 fn remove_from_contract_white_list() -> Weight;289 fn set_collection_limits() -> Weight;290}291292#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]293#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]294pub struct CreateNftData {295 pub const_data: Vec<u8>,296 pub variable_data: Vec<u8>,297}298299#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]300#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]301pub struct CreateFungibleData {302 pub value: u128,303}304305#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]306#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]307pub struct CreateReFungibleData {308 pub const_data: Vec<u8>,309 pub variable_data: Vec<u8>,310 pub pieces: u128,311}312313#[derive(Encode, Decode, Debug, Clone, PartialEq)]314#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]315pub enum CreateItemData {316 NFT(CreateNftData),317 Fungible(CreateFungibleData),318 ReFungible(CreateReFungibleData),319}320321impl CreateItemData {322 pub fn len(&self) -> usize {323 let len = match self {324 CreateItemData::NFT(data) => data.variable_data.len() + data.const_data.len(),325 CreateItemData::ReFungible(data) => data.variable_data.len() + data.const_data.len(),326 _ => 0327 };328 329 return len;330 }331}332333impl From<CreateNftData> for CreateItemData {334 fn from(item: CreateNftData) -> Self {335 CreateItemData::NFT(item)336 }337}338339impl From<CreateReFungibleData> for CreateItemData {340 fn from(item: CreateReFungibleData) -> Self {341 CreateItemData::ReFungible(item)342 }343}344345impl From<CreateFungibleData> for CreateItemData {346 fn from(item: CreateFungibleData) -> Self {347 CreateItemData::Fungible(item)348 }349}350351352decl_error! {353 /// Error for non-fungible-token module.354 pub enum Error for Module<T: Config> {355 /// Total collections bound exceeded.356 TotalCollectionsLimitExceeded,357 /// Decimal_points parameter must be lower than MAX_DECIMAL_POINTS constant, currently it is 30.358 CollectionDecimalPointLimitExceeded, 359 /// Collection name can not be longer than 63 char.360 CollectionNameLimitExceeded, 361 /// Collection description can not be longer than 255 char.362 CollectionDescriptionLimitExceeded, 363 /// Token prefix can not be longer than 15 char.364 CollectionTokenPrefixLimitExceeded,365 /// This collection does not exist.366 CollectionNotFound,367 /// Item not exists.368 TokenNotFound,369 /// Admin not found370 AdminNotFound,371 /// Arithmetic calculation overflow.372 NumOverflow, 373 /// Account already has admin role.374 AlreadyAdmin, 375 /// You do not own this collection.376 NoPermission,377 /// This address is not set as sponsor, use setCollectionSponsor first.378 ConfirmUnsetSponsorFail,379 /// Collection is not in mint mode.380 PublicMintingNotAllowed,381 /// Sender parameter and item owner must be equal.382 MustBeTokenOwner,383 /// Item balance not enough.384 TokenValueTooLow,385 /// Size of item is too large.386 NftSizeLimitExceeded,387 /// No approve found388 ApproveNotFound,389 /// Requested value more than approved.390 TokenValueNotEnough,391 /// Only approved addresses can call this method.392 ApproveRequired,393 /// Address is not in white list.394 AddresNotInWhiteList,395 /// Number of collection admins bound exceeded.396 CollectionAdminsLimitExceeded,397 /// Owned tokens by a single address bound exceeded.398 AddressOwnershipLimitExceeded,399 /// Length of items properties must be greater than 0.400 EmptyArgument,401 /// const_data exceeded data limit.402 TokenConstDataLimitExceeded,403 /// variable_data exceeded data limit.404 TokenVariableDataLimitExceeded,405 /// Not NFT item data used to mint in NFT collection.406 NotNftDataUsedToMintNftCollectionToken,407 /// Not Fungible item data used to mint in Fungible collection.408 NotFungibleDataUsedToMintFungibleCollectionToken,409 /// Not Re Fungible item data used to mint in Re Fungible collection.410 NotReFungibleDataUsedToMintReFungibleCollectionToken,411 /// Unexpected collection type.412 UnexpectedCollectionType,413 /// Can't store metadata in fungible tokens.414 CantStoreMetadataInFungibleTokens,415 /// Collection token limit exceeded416 CollectionTokenLimitExceeded,417 /// Account token limit exceeded per collection418 AccountTokenLimitExceeded,419 /// Collection limit bounds per collection exceeded420 CollectionLimitBoundsExceeded,421 /// Tried to enable permissions which are only permitted to be disabled422 OwnerPermissionsCantBeReverted,423 /// Schema data size limit bound exceeded424 SchemaDataLimitExceeded,425 /// Maximum refungibility exceeded426 WrongRefungiblePieces,427 /// createRefungible should be called with one owner428 BadCreateRefungibleCall,429 }430}431432pub trait Config: system::Config + Sized + pallet_transaction_payment::Config + pallet_contracts::Config {433 type Event: From<Event<Self>> + Into<<Self as system::Config>::Event>;434435 /// Weight information for extrinsics in this pallet.436 type WeightInfo: WeightInfo;437438 type CollectionCreationPrice: Get<BalanceOf<Self>>;439}440441#[cfg(feature = "runtime-benchmarks")]442mod benchmarking;443444// #endregion445446// # Used definitions447//448// ## User control levels449//450// chain-controlled - key is uncontrolled by user451// i.e autoincrementing index452// can use non-cryptographic hash453// real - key is controlled by user454// but it is hard to generate enough colliding values, i.e owner of signed txs455// can use non-cryptographic hash456// controlled - key is completly controlled by users457// i.e maps with mutable keys458// should use cryptographic hash459//460// ## User control level downgrade reasons461//462// ?1 - chain-controlled -> controlled463// collections/tokens can be destroyed, resulting in massive holes464// ?2 - chain-controlled -> controlled465// same as ?1, but can be only added, resulting in easier exploitation466// ?3 - real -> controlled467// no confirmation required, so addresses can be easily generated468decl_storage! {469 trait Store for Module<T: Config> as Nft {470471 //#region Private members472 /// Id of next collection473 CreatedCollectionCount: u32;474 /// Used for migrations475 ChainVersion: u64;476 /// Id of last collection token477 /// Collection id (controlled?1)478 ItemListIndex: map hasher(blake2_128_concat) CollectionId => TokenId;479 //#endregion480481 //#region Chain limits struct482 pub ChainLimit get(fn chain_limit) config(): ChainLimits;483 //#endregion484485 //#region Bound counters486 /// Amount of collections destroyed, used for total amount tracking with487 /// CreatedCollectionCount488 DestroyedCollectionCount: u32;489 /// Total amount of account owned tokens (NFTs + RFTs + unique fungibles)490 /// Account id (real)491 pub AccountItemCount get(fn account_item_count): map hasher(twox_64_concat) T::AccountId => u32;492 //#endregion493494 //#region Basic collections495 /// Collection info496 /// Collection id (controlled?1)497 pub Collection get(fn collection) config(): map hasher(blake2_128_concat) CollectionId => CollectionType<T::AccountId>;498 /// List of collection admins499 /// Collection id (controlled?2)500 pub AdminList get(fn admin_list_collection): map hasher(blake2_128_concat) CollectionId => Vec<T::AccountId>;501 /// Whitelisted collection users502 /// Collection id (controlled?2), user id (controlled?3)503 pub WhiteList get(fn white_list): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) T::AccountId => bool;504 //#endregion505506 /// How many of collection items user have507 /// Collection id (controlled?2), account id (real)508 pub Balance get(fn balance_count): double_map hasher(blake2_128_concat) CollectionId, hasher(twox_64_concat) T::AccountId => u128;509510 /// Amount of items which spender can transfer out of owners account (via transferFrom)511 /// Collection id (controlled?2), (token id (controlled ?2) + owner account id (real) + spender account id (controlled?3))512 pub Allowances get(fn approved): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) (TokenId, T::AccountId, T::AccountId) => u128;513514 //#region Item collections515 /// Collection id (controlled?2), token id (controlled?1)516 pub NftItemList get(fn nft_item_id) config(): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => NftItemType<T::AccountId>;517 /// Collection id (controlled?2), owner (controlled?2)518 pub FungibleItemList get(fn fungible_item_id) config(): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) T::AccountId => FungibleItemType;519 /// Collection id (controlled?2), token id (controlled?1)520 pub ReFungibleItemList get(fn refungible_item_id) config(): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => ReFungibleItemType<T::AccountId>;521 //#endregion522523 //#region Index list524 /// Collection id (controlled?2), tokens owner (controlled?2)525 pub AddressTokens get(fn address_tokens): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) T::AccountId => Vec<TokenId>;526 //#endregion527528 //#region Tokens transfer rate limit baskets529 /// (Collection id (controlled?2), who created (real))530 pub CreateItemBasket get(fn create_item_basket): map hasher(blake2_128_concat) (CollectionId, T::AccountId) => T::BlockNumber;531 /// Collection id (controlled?2), token id (controlled?2)532 pub NftTransferBasket get(fn nft_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => T::BlockNumber;533 /// Collection id (controlled?2), owning user (real)534 pub FungibleTransferBasket get(fn fungible_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(twox_64_concat) T::AccountId => T::BlockNumber;535 /// Collection id (controlled?2), token id (controlled?2)536 pub ReFungibleTransferBasket get(fn refungible_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => T::BlockNumber;537 //#endregion538539 //#region Contract Sponsorship and Ownership540 /// Contract address (real)541 pub ContractOwner get(fn contract_owner): map hasher(twox_64_concat) T::AccountId => T::AccountId;542 /// Contract address (real)543 pub ContractSelfSponsoring get(fn contract_self_sponsoring): map hasher(twox_64_concat) T::AccountId => bool;544 /// (Contract address(real), caller (real))545 pub ContractSponsorBasket get(fn contract_sponsor_basket): map hasher(twox_64_concat) (T::AccountId, T::AccountId) => T::BlockNumber;546 /// Contract address (real)547 pub ContractSponsoringRateLimit get(fn contract_sponsoring_rate_limit): map hasher(twox_64_concat) T::AccountId => T::BlockNumber;548 /// Contract address (real)549 pub ContractWhiteListEnabled get(fn contract_white_list_enabled): map hasher(twox_64_concat) T::AccountId => bool; 550 /// Contract address (real) => Whitelisted user (controlled?3)551 pub ContractWhiteList get(fn contract_white_list): double_map hasher(twox_64_concat) T::AccountId, hasher(blake2_128_concat) T::AccountId => bool; 552 //#endregion553 }554 add_extra_genesis {555 build(|config: &GenesisConfig<T>| {556 // Modification of storage557 for (_num, _c) in &config.collection {558 <Module<T>>::init_collection(_c);559 }560561 for (_num, _c, _i) in &config.nft_item_id {562 <Module<T>>::init_nft_token(*_c, _i);563 }564565 for (collection_id, account_id, fungible_item) in &config.fungible_item_id {566 <Module<T>>::init_fungible_token(*collection_id, account_id, fungible_item);567 }568569 for (_num, _c, _i) in &config.refungible_item_id {570 <Module<T>>::init_refungible_token(*_c, _i);571 }572 })573 }574}575576decl_event!(577 pub enum Event<T>578 where579 AccountId = <T as system::Config>::AccountId,580 {581 /// New collection was created582 /// 583 /// # Arguments584 /// 585 /// * collection_id: Globally unique identifier of newly created collection.586 /// 587 /// * mode: [CollectionMode] converted into u8.588 /// 589 /// * account_id: Collection owner.590 Created(CollectionId, u8, AccountId),591592 /// New item was created.593 /// 594 /// # Arguments595 /// 596 /// * collection_id: Id of the collection where item was created.597 /// 598 /// * item_id: Id of an item. Unique within the collection.599 ///600 /// * recipient: Owner of newly created item 601 ItemCreated(CollectionId, TokenId, AccountId),602603 /// Collection item was burned.604 /// 605 /// # Arguments606 /// 607 /// collection_id.608 /// 609 /// item_id: Identifier of burned NFT.610 ItemDestroyed(CollectionId, TokenId),611612 /// Item was transferred613 ///614 /// * collection_id: Id of collection to which item is belong615 ///616 /// * item_id: Id of an item617 ///618 /// * sender: Original owner of item619 ///620 /// * recipient: New owner of item621 ///622 /// * amount: Always 1 for NFT623 Transfer(CollectionId, TokenId, AccountId, AccountId, u128),624 }625);626627decl_module! {628 pub struct Module<T: Config> for enum Call 629 where 630 origin: T::Origin631 {632 fn deposit_event() = default;633 type Error = Error<T>;634635 fn on_initialize(now: T::BlockNumber) -> Weight {636 0637 }638639 /// 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.640 /// 641 /// # Permissions642 /// 643 /// * Anyone.644 /// 645 /// # Arguments646 /// 647 /// * collection_name: UTF-16 string with collection name (limit 64 characters), will be stored as zero-terminated.648 /// 649 /// * collection_description: UTF-16 string with collection description (limit 256 characters), will be stored as zero-terminated.650 /// 651 /// * token_prefix: UTF-8 string with token prefix.652 /// 653 /// * mode: [CollectionMode] collection type and type dependent data.654 // returns collection ID655 #[weight = <T as Config>::WeightInfo::create_collection()]656 #[transactional]657 pub fn create_collection(origin,658 collection_name: Vec<u16>,659 collection_description: Vec<u16>,660 token_prefix: Vec<u8>,661 mode: CollectionMode) -> DispatchResult {662663 // Anyone can create a collection664 let who = ensure_signed(origin)?;665666 let decimal_points = match mode {667 CollectionMode::Fungible(points) => points,668 _ => 0669 };670671 let chain_limit = ChainLimit::get();672673 let created_count = CreatedCollectionCount::get();674 let destroyed_count = DestroyedCollectionCount::get();675676 // bound Total number of collections677 ensure!(created_count - destroyed_count < chain_limit.collection_numbers_limit, Error::<T>::TotalCollectionsLimitExceeded);678679 // check params680 ensure!(decimal_points <= MAX_DECIMAL_POINTS, Error::<T>::CollectionDecimalPointLimitExceeded);681 ensure!(collection_name.len() <= 64, Error::<T>::CollectionNameLimitExceeded);682 ensure!(collection_description.len() <= 256, Error::<T>::CollectionDescriptionLimitExceeded);683 ensure!(token_prefix.len() <= 16, Error::<T>::CollectionTokenPrefixLimitExceeded);684685 // Generate next collection ID686 let next_id = created_count687 .checked_add(1)688 .ok_or(Error::<T>::NumOverflow)?;689690 CreatedCollectionCount::put(next_id);691692 let limits = CollectionLimits {693 sponsored_data_size: chain_limit.custom_data_limit,694 ..Default::default()695 };696697 // Create new collection698 let new_collection = CollectionType {699 owner: who.clone(),700 name: collection_name,701 mode: mode.clone(),702 mint_mode: false,703 access: AccessMode::Normal,704 description: collection_description,705 decimal_points: decimal_points,706 token_prefix: token_prefix,707 offchain_schema: Vec::new(),708 schema_version: SchemaVersion::ImageURL,709 sponsorship: SponsorshipState::Disabled,710 variable_on_chain_schema: Vec::new(),711 const_on_chain_schema: Vec::new(),712 limits,713 };714715 // Add new collection to map716 <Collection<T>>::insert(next_id, new_collection);717718 // call event719 Self::deposit_event(RawEvent::Created(next_id, mode.into(), who.clone()));720721 Ok(())722 }723724 /// **DANGEROUS**: Destroys collection and all NFTs within this collection. Users irrecoverably lose their assets and may lose real money.725 /// 726 /// # Permissions727 /// 728 /// * Collection Owner.729 /// 730 /// # Arguments731 /// 732 /// * collection_id: collection to destroy.733 #[weight = <T as Config>::WeightInfo::destroy_collection()]734 #[transactional]735 pub fn destroy_collection(origin, collection_id: CollectionId) -> DispatchResult {736737 let sender = ensure_signed(origin)?;738 Self::check_owner_permissions(collection_id, sender)?;739740 let target_collection = <Collection<T>>::get(collection_id);741 if !target_collection.limits.owner_can_destroy {742 fail!(Error::<T>::NoPermission);743 }744745 <AddressTokens<T>>::remove_prefix(collection_id);746 <Allowances<T>>::remove_prefix(collection_id);747 <Balance<T>>::remove_prefix(collection_id);748 <ItemListIndex>::remove(collection_id);749 <AdminList<T>>::remove(collection_id);750 <Collection<T>>::remove(collection_id);751 <WhiteList<T>>::remove_prefix(collection_id);752753 <NftItemList<T>>::remove_prefix(collection_id);754 <FungibleItemList<T>>::remove_prefix(collection_id);755 <ReFungibleItemList<T>>::remove_prefix(collection_id);756757 <NftTransferBasket<T>>::remove_prefix(collection_id);758 <FungibleTransferBasket<T>>::remove_prefix(collection_id);759 <ReFungibleTransferBasket<T>>::remove_prefix(collection_id);760761 DestroyedCollectionCount::put(DestroyedCollectionCount::get()762 .checked_add(1)763 .ok_or(Error::<T>::NumOverflow)?);764765 Ok(())766 }767768 /// Add an address to white list.769 /// 770 /// # Permissions771 /// 772 /// * Collection Owner773 /// * Collection Admin774 /// 775 /// # Arguments776 /// 777 /// * collection_id.778 /// 779 /// * address.780 #[weight = <T as Config>::WeightInfo::add_to_white_list()]781 #[transactional]782 pub fn add_to_white_list(origin, collection_id: CollectionId, address: T::AccountId) -> DispatchResult{783784 let sender = ensure_signed(origin)?;785 Self::check_owner_or_admin_permissions(collection_id, sender)?;786787 <WhiteList<T>>::insert(collection_id, address, true);788 789 Ok(())790 }791792 /// Remove an address from white list.793 /// 794 /// # Permissions795 /// 796 /// * Collection Owner797 /// * Collection Admin798 /// 799 /// # Arguments800 /// 801 /// * collection_id.802 /// 803 /// * address.804 #[weight = <T as Config>::WeightInfo::remove_from_white_list()]805 #[transactional]806 pub fn remove_from_white_list(origin, collection_id: CollectionId, address: T::AccountId) -> DispatchResult{807808 let sender = ensure_signed(origin)?;809 Self::check_owner_or_admin_permissions(collection_id, sender)?;810811 <WhiteList<T>>::remove(collection_id, address);812813 Ok(())814 }815816 /// Toggle between normal and white list access for the methods with access for `Anyone`.817 /// 818 /// # Permissions819 /// 820 /// * Collection Owner.821 /// 822 /// # Arguments823 /// 824 /// * collection_id.825 /// 826 /// * mode: [AccessMode]827 #[weight = <T as Config>::WeightInfo::set_public_access_mode()]828 #[transactional]829 pub fn set_public_access_mode(origin, collection_id: CollectionId, mode: AccessMode) -> DispatchResult830 {831 let sender = ensure_signed(origin)?;832833 Self::check_owner_permissions(collection_id, sender)?;834 let mut target_collection = <Collection<T>>::get(collection_id);835 target_collection.access = mode;836 <Collection<T>>::insert(collection_id, target_collection);837838 Ok(())839 }840841 /// Allows Anyone to create tokens if:842 /// * White List is enabled, and843 /// * Address is added to white list, and844 /// * This method was called with True parameter845 /// 846 /// # Permissions847 /// * Collection Owner848 ///849 /// # Arguments850 /// 851 /// * collection_id.852 /// 853 /// * mint_permission: Boolean parameter. If True, allows minting to Anyone with conditions above.854 #[weight = <T as Config>::WeightInfo::set_mint_permission()]855 #[transactional]856 pub fn set_mint_permission(origin, collection_id: CollectionId, mint_permission: bool) -> DispatchResult857 {858 let sender = ensure_signed(origin)?;859860 Self::check_owner_permissions(collection_id, sender)?;861 let mut target_collection = <Collection<T>>::get(collection_id);862 target_collection.mint_mode = mint_permission;863 <Collection<T>>::insert(collection_id, target_collection);864865 Ok(())866 }867868 /// Change the owner of the collection.869 /// 870 /// # Permissions871 /// 872 /// * Collection Owner.873 /// 874 /// # Arguments875 /// 876 /// * collection_id.877 /// 878 /// * new_owner.879 #[weight = <T as Config>::WeightInfo::change_collection_owner()]880 #[transactional]881 pub fn change_collection_owner(origin, collection_id: CollectionId, new_owner: T::AccountId) -> DispatchResult {882883 let sender = ensure_signed(origin)?;884 Self::check_owner_permissions(collection_id, sender)?;885 let mut target_collection = <Collection<T>>::get(collection_id);886 target_collection.owner = new_owner;887 <Collection<T>>::insert(collection_id, target_collection);888889 Ok(())890 }891892 /// Adds an admin of the Collection.893 /// 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. 894 /// 895 /// # Permissions896 /// 897 /// * Collection Owner.898 /// * Collection Admin.899 /// 900 /// # Arguments901 /// 902 /// * collection_id: ID of the Collection to add admin for.903 /// 904 /// * new_admin_id: Address of new admin to add.905 #[weight = <T as Config>::WeightInfo::add_collection_admin()]906 #[transactional]907 pub fn add_collection_admin(origin, collection_id: CollectionId, new_admin_id: T::AccountId) -> DispatchResult {908909 let sender = ensure_signed(origin)?;910 Self::check_owner_or_admin_permissions(collection_id, sender)?;911 let mut admin_arr: Vec<T::AccountId> = Vec::new();912913 if <AdminList<T>>::contains_key(collection_id)914 {915 admin_arr = <AdminList<T>>::get(collection_id);916 ensure!(!admin_arr.contains(&new_admin_id), Error::<T>::AlreadyAdmin);917 }918919 // Number of collection admins920 ensure!((admin_arr.len() as u64) < ChainLimit::get().collections_admins_limit, Error::<T>::CollectionAdminsLimitExceeded);921922 admin_arr.push(new_admin_id);923 <AdminList<T>>::insert(collection_id, admin_arr);924925 Ok(())926 }927928 /// 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.929 ///930 /// # Permissions931 /// 932 /// * Collection Owner.933 /// * Collection Admin.934 /// 935 /// # Arguments936 /// 937 /// * collection_id: ID of the Collection to remove admin for.938 /// 939 /// * account_id: Address of admin to remove.940 #[weight = <T as Config>::WeightInfo::remove_collection_admin()]941 #[transactional]942 pub fn remove_collection_admin(origin, collection_id: CollectionId, account_id: T::AccountId) -> DispatchResult {943944 let sender = ensure_signed(origin)?;945 Self::check_owner_or_admin_permissions(collection_id, sender)?;946 ensure!(<AdminList<T>>::contains_key(collection_id), Error::<T>::AdminNotFound);947948 let mut admin_arr = <AdminList<T>>::get(collection_id);949 admin_arr.retain(|i| *i != account_id);950 <AdminList<T>>::insert(collection_id, admin_arr);951952 Ok(())953 }954955 /// # Permissions956 /// 957 /// * Collection Owner958 /// 959 /// # Arguments960 /// 961 /// * collection_id.962 /// 963 /// * new_sponsor.964 #[weight = <T as Config>::WeightInfo::set_collection_sponsor()]965 #[transactional]966 pub fn set_collection_sponsor(origin, collection_id: CollectionId, new_sponsor: T::AccountId) -> DispatchResult {967968 let sender = ensure_signed(origin)?;969 ensure!(<Collection<T>>::contains_key(collection_id), Error::<T>::CollectionNotFound);970971 let mut target_collection = <Collection<T>>::get(collection_id);972 ensure!(sender == target_collection.owner, Error::<T>::NoPermission);973974 target_collection.sponsorship = SponsorshipState::Unconfirmed(new_sponsor);975 <Collection<T>>::insert(collection_id, target_collection);976977 Ok(())978 }979980 /// # Permissions981 /// 982 /// * Sponsor.983 /// 984 /// # Arguments985 /// 986 /// * collection_id.987 #[weight = <T as Config>::WeightInfo::confirm_sponsorship()]988 #[transactional]989 pub fn confirm_sponsorship(origin, collection_id: CollectionId) -> DispatchResult {990991 let sender = ensure_signed(origin)?;992 ensure!(<Collection<T>>::contains_key(collection_id), Error::<T>::CollectionNotFound);993994 let mut target_collection = <Collection<T>>::get(collection_id);995 ensure!(996 target_collection.sponsorship.pending_sponsor() == Some(&sender),997 Error::<T>::ConfirmUnsetSponsorFail998 );9991000 target_collection.sponsorship = SponsorshipState::Confirmed(sender);1001 <Collection<T>>::insert(collection_id, target_collection);10021003 Ok(())1004 }10051006 /// Switch back to pay-per-own-transaction model.1007 ///1008 /// # Permissions1009 ///1010 /// * Collection owner.1011 /// 1012 /// # Arguments1013 /// 1014 /// * collection_id.1015 #[weight = <T as Config>::WeightInfo::remove_collection_sponsor()]1016 #[transactional]1017 pub fn remove_collection_sponsor(origin, collection_id: CollectionId) -> DispatchResult {10181019 let sender = ensure_signed(origin)?;1020 ensure!(<Collection<T>>::contains_key(collection_id), Error::<T>::CollectionNotFound);10211022 let mut target_collection = <Collection<T>>::get(collection_id);1023 ensure!(sender == target_collection.owner, Error::<T>::NoPermission);10241025 target_collection.sponsorship = SponsorshipState::Disabled;1026 <Collection<T>>::insert(collection_id, target_collection);10271028 Ok(())1029 }10301031 /// This method creates a concrete instance of NFT Collection created with CreateCollection method.1032 /// 1033 /// # Permissions1034 /// 1035 /// * Collection Owner.1036 /// * Collection Admin.1037 /// * Anyone if1038 /// * White List is enabled, and1039 /// * Address is added to white list, and1040 /// * MintPermission is enabled (see SetMintPermission method)1041 /// 1042 /// # Arguments1043 /// 1044 /// * collection_id: ID of the collection.1045 /// 1046 /// * owner: Address, initial owner of the NFT.1047 ///1048 /// * data: Token data to store on chain.1049 // #[weight =1050 // (130_000_000 as Weight)1051 // .saturating_add((2135 as Weight).saturating_mul((properties.len() as u64) as Weight))1052 // .saturating_add(RocksDbWeight::get().reads(10 as Weight))1053 // .saturating_add(RocksDbWeight::get().writes(8 as Weight))]10541055 #[weight = <T as Config>::WeightInfo::create_item(data.len())]1056 #[transactional]1057 pub fn create_item(origin, collection_id: CollectionId, owner: T::AccountId, data: CreateItemData) -> DispatchResult {10581059 let sender = ensure_signed(origin)?;10601061 Self::collection_exists(collection_id)?;10621063 let target_collection = <Collection<T>>::get(collection_id);10641065 Self::can_create_items_in_collection(collection_id, &target_collection, &sender, &owner)?;1066 Self::validate_create_item_args(&target_collection, &data)?;1067 Self::create_item_no_validation(collection_id, owner, data)?;10681069 Ok(())1070 }10711072 /// This method creates multiple items in a collection created with CreateCollection method.1073 /// 1074 /// # Permissions1075 /// 1076 /// * Collection Owner.1077 /// * Collection Admin.1078 /// * Anyone if1079 /// * White List is enabled, and1080 /// * Address is added to white list, and1081 /// * MintPermission is enabled (see SetMintPermission method)1082 /// 1083 /// # Arguments1084 /// 1085 /// * collection_id: ID of the collection.1086 /// 1087 /// * itemsData: Array items properties. Each property is an array of bytes itself, see [create_item].1088 /// 1089 /// * owner: Address, initial owner of the NFT.1090 #[weight = <T as Config>::WeightInfo::create_item(items_data.into_iter()1091 .map(|data| { data.len() })1092 .sum())]1093 #[transactional]1094 pub fn create_multiple_items(origin, collection_id: CollectionId, owner: T::AccountId, items_data: Vec<CreateItemData>) -> DispatchResult {10951096 ensure!(items_data.len() > 0, Error::<T>::EmptyArgument);1097 let sender = ensure_signed(origin)?;10981099 Self::collection_exists(collection_id)?;1100 let target_collection = <Collection<T>>::get(collection_id);11011102 Self::can_create_items_in_collection(collection_id, &target_collection, &sender, &owner)?;11031104 for data in &items_data {1105 Self::validate_create_item_args(&target_collection, data)?;1106 }1107 for data in &items_data {1108 Self::create_item_no_validation(collection_id, owner.clone(), data.clone())?;1109 }11101111 Ok(())1112 }11131114 /// Destroys a concrete instance of NFT.1115 /// 1116 /// # Permissions1117 /// 1118 /// * Collection Owner.1119 /// * Collection Admin.1120 /// * Current NFT Owner.1121 /// 1122 /// # Arguments1123 /// 1124 /// * collection_id: ID of the collection.1125 /// 1126 /// * item_id: ID of NFT to burn.1127 #[weight = <T as Config>::WeightInfo::burn_item()]1128 #[transactional]1129 pub fn burn_item(origin, collection_id: CollectionId, item_id: TokenId, value: u128) -> DispatchResult {11301131 let sender = ensure_signed(origin)?;1132 Self::collection_exists(collection_id)?;11331134 // Transfer permissions check1135 let target_collection = <Collection<T>>::get(collection_id);1136 ensure!(1137 Self::is_item_owner(sender.clone(), collection_id, item_id) ||1138 (1139 target_collection.limits.owner_can_transfer &&1140 Self::is_owner_or_admin_permissions(collection_id, sender.clone())1141 ),1142 Error::<T>::NoPermission1143 );11441145 if target_collection.access == AccessMode::WhiteList {1146 Self::check_white_list(collection_id, &sender)?;1147 }11481149 match target_collection.mode1150 {1151 CollectionMode::NFT => Self::burn_nft_item(collection_id, item_id)?,1152 CollectionMode::Fungible(_) => Self::burn_fungible_item(&sender, collection_id, value)?,1153 CollectionMode::ReFungible => Self::burn_refungible_item(collection_id, item_id, &sender)?,1154 _ => ()1155 };11561157 // call event1158 Self::deposit_event(RawEvent::ItemDestroyed(collection_id, item_id));11591160 Ok(())1161 }11621163 /// Change ownership of the token.1164 /// 1165 /// # Permissions1166 /// 1167 /// * Collection Owner1168 /// * Collection Admin1169 /// * Current NFT owner1170 ///1171 /// # Arguments1172 /// 1173 /// * recipient: Address of token recipient.1174 /// 1175 /// * collection_id.1176 /// 1177 /// * item_id: ID of the item1178 /// * Non-Fungible Mode: Required.1179 /// * Fungible Mode: Ignored.1180 /// * Re-Fungible Mode: Required.1181 /// 1182 /// * value: Amount to transfer.1183 /// * Non-Fungible Mode: Ignored1184 /// * Fungible Mode: Must specify transferred amount1185 /// * Re-Fungible Mode: Must specify transferred portion (between 0 and 1)1186 #[weight = <T as Config>::WeightInfo::transfer()]1187 #[transactional]1188 pub fn transfer(origin, recipient: T::AccountId, collection_id: CollectionId, item_id: TokenId, value: u128) -> DispatchResult {1189 let sender = ensure_signed(origin)?;1190 Self::transfer_internal(sender, recipient, collection_id, item_id, value)1191 }11921193 /// Set, change, or remove approved address to transfer the ownership of the NFT.1194 /// 1195 /// # Permissions1196 /// 1197 /// * Collection Owner1198 /// * Collection Admin1199 /// * Current NFT owner1200 /// 1201 /// # Arguments1202 /// 1203 /// * approved: Address that is approved to transfer this NFT or zero (if needed to remove approval).1204 /// 1205 /// * collection_id.1206 /// 1207 /// * item_id: ID of the item.1208 #[weight = <T as Config>::WeightInfo::approve()]1209 #[transactional]1210 pub fn approve(origin, spender: T::AccountId, collection_id: CollectionId, item_id: TokenId, amount: u128) -> DispatchResult {12111212 let sender = ensure_signed(origin)?;12131214 Self::collection_exists(collection_id)?;1215 Self::token_exists(collection_id, item_id, &sender)?;12161217 // Transfer permissions check1218 let target_collection = <Collection<T>>::get(collection_id);1219 let allowance_limit = if target_collection.limits.owner_can_transfer &&1220 Self::is_owner_or_admin_permissions(1221 collection_id,1222 sender.clone(),1223 ) {1224 None1225 } else if let Some(amount) = Self::owned_amount(1226 sender.clone(),1227 collection_id,1228 item_id,1229 ) {1230 Some(amount)1231 } else {1232 fail!(Error::<T>::NoPermission);1233 };12341235 if target_collection.access == AccessMode::WhiteList {1236 Self::check_white_list(collection_id, &sender)?;1237 Self::check_white_list(collection_id, &spender)?;1238 }12391240 let allowance_exists = <Allowances<T>>::contains_key(collection_id, (item_id, &sender, &spender));1241 let mut allowance: u128 = amount;1242 if allowance_exists {1243 allowance += <Allowances<T>>::get(collection_id, (item_id, &sender, &spender));1244 }1245 if let Some(limit) = allowance_limit {1246 ensure!(limit >= allowance, Error::<T>::TokenValueTooLow);1247 }1248 <Allowances<T>>::insert(collection_id, (item_id, sender.clone(), spender.clone()), allowance);12491250 Ok(())1251 }1252 1253 /// 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.1254 /// 1255 /// # Permissions1256 /// * Collection Owner1257 /// * Collection Admin1258 /// * Current NFT owner1259 /// * Address approved by current NFT owner1260 /// 1261 /// # Arguments1262 /// 1263 /// * from: Address that owns token.1264 /// 1265 /// * recipient: Address of token recipient.1266 /// 1267 /// * collection_id.1268 /// 1269 /// * item_id: ID of the item.1270 /// 1271 /// * value: Amount to transfer.1272 #[weight = <T as Config>::WeightInfo::transfer_from()]1273 #[transactional]1274 pub fn transfer_from(origin, from: T::AccountId, recipient: T::AccountId, collection_id: CollectionId, item_id: TokenId, value: u128 ) -> DispatchResult {12751276 let sender = ensure_signed(origin)?;1277 let mut appoved_transfer = false;12781279 // Check approval1280 let mut approval: u128 = 0;1281 if <Allowances<T>>::contains_key(collection_id, (item_id, &from, &sender)) {1282 approval = <Allowances<T>>::get(collection_id, (item_id, &from, &sender));1283 ensure!(approval >= value, Error::<T>::TokenValueNotEnough);1284 appoved_transfer = true;1285 }12861287 let target_collection = <Collection<T>>::get(collection_id);12881289 // Limits check1290 Self::is_correct_transfer(collection_id, &target_collection, &recipient)?;12911292 // Transfer permissions check 1293 ensure!(1294 appoved_transfer || 1295 (1296 target_collection.limits.owner_can_transfer &&1297 Self::is_owner_or_admin_permissions(collection_id, sender.clone())1298 ),1299 Error::<T>::NoPermission1300 );13011302 if target_collection.access == AccessMode::WhiteList {1303 Self::check_white_list(collection_id, &sender)?;1304 Self::check_white_list(collection_id, &recipient)?;1305 }13061307 // Reduce approval by transferred amount or remove if remaining approval drops to 01308 if approval.saturating_sub(value) > 0 {1309 <Allowances<T>>::insert(collection_id, (item_id, &from, &sender), approval - value);1310 }1311 else {1312 <Allowances<T>>::remove(collection_id, (item_id, &from, &sender));1313 }13141315 match target_collection.mode1316 {1317 CollectionMode::NFT => Self::transfer_nft(collection_id, item_id, from, recipient)?,1318 CollectionMode::Fungible(_) => Self::transfer_fungible(collection_id, value, &from, &recipient)?,1319 CollectionMode::ReFungible => Self::transfer_refungible(collection_id, item_id, value, from.clone(), recipient)?,1320 _ => ()1321 };13221323 Ok(())1324 }13251326 // #[weight = 0]1327 // pub fn safe_transfer_from(origin, collection_id: CollectionId, item_id: TokenId, new_owner: T::AccountId) -> DispatchResult {13281329 // // let no_perm_mes = "You do not have permissions to modify this collection";1330 // // ensure!(<ApprovedList<T>>::contains_key((collection_id, item_id)), no_perm_mes);1331 // // let list_itm = <ApprovedList<T>>::get((collection_id, item_id));1332 // // ensure!(list_itm.contains(&new_owner.clone()), no_perm_mes);13331334 // // // on_nft_received call13351336 // // Self::transfer(origin, collection_id, item_id, new_owner)?;13371338 // Ok(())1339 // }13401341 /// Set off-chain data schema.1342 /// 1343 /// # Permissions1344 /// 1345 /// * Collection Owner1346 /// * Collection Admin1347 /// 1348 /// # Arguments1349 /// 1350 /// * collection_id.1351 /// 1352 /// * schema: String representing the offchain data schema.1353 #[weight = <T as Config>::WeightInfo::set_variable_meta_data()]1354 #[transactional]1355 pub fn set_variable_meta_data (1356 origin,1357 collection_id: CollectionId,1358 item_id: TokenId,1359 data: Vec<u8>1360 ) -> DispatchResult {1361 let sender = ensure_signed(origin)?;1362 1363 Self::collection_exists(collection_id)?;1364 Self::token_exists(collection_id, item_id, &sender)?;13651366 ensure!(ChainLimit::get().custom_data_limit >= data.len() as u32, Error::<T>::TokenVariableDataLimitExceeded);13671368 // Modify permissions check1369 let target_collection = <Collection<T>>::get(collection_id);1370 ensure!(Self::is_item_owner(sender.clone(), collection_id, item_id) ||1371 Self::is_owner_or_admin_permissions(collection_id, sender.clone()),1372 Error::<T>::NoPermission);13731374 match target_collection.mode1375 {1376 CollectionMode::NFT => Self::set_nft_variable_data(collection_id, item_id, data)?,1377 CollectionMode::ReFungible => Self::set_re_fungible_variable_data(collection_id, item_id, data)?,1378 CollectionMode::Fungible(_) => fail!(Error::<T>::CantStoreMetadataInFungibleTokens),1379 _ => fail!(Error::<T>::UnexpectedCollectionType)1380 };13811382 Ok(())1383 }1384 1385 /// Set schema standard1386 /// ImageURL1387 /// Unique1388 /// 1389 /// # Permissions1390 /// 1391 /// * Collection Owner1392 /// * Collection Admin1393 /// 1394 /// # Arguments1395 /// 1396 /// * collection_id.1397 /// 1398 /// * schema: SchemaVersion: enum1399 #[weight = <T as Config>::WeightInfo::set_schema_version()]1400 #[transactional]1401 pub fn set_schema_version(1402 origin,1403 collection_id: CollectionId,1404 version: SchemaVersion1405 ) -> DispatchResult {1406 let sender = ensure_signed(origin)?;1407 Self::check_owner_or_admin_permissions(collection_id, sender.clone())?;1408 let mut target_collection = <Collection<T>>::get(collection_id);1409 target_collection.schema_version = version;1410 <Collection<T>>::insert(collection_id, target_collection);14111412 Ok(())1413 }14141415 /// Set off-chain data schema.1416 /// 1417 /// # Permissions1418 /// 1419 /// * Collection Owner1420 /// * Collection Admin1421 /// 1422 /// # Arguments1423 /// 1424 /// * collection_id.1425 /// 1426 /// * schema: String representing the offchain data schema.1427 #[weight = <T as Config>::WeightInfo::set_offchain_schema()]1428 #[transactional]1429 pub fn set_offchain_schema(1430 origin,1431 collection_id: CollectionId,1432 schema: Vec<u8>1433 ) -> DispatchResult {1434 let sender = ensure_signed(origin)?;1435 Self::check_owner_or_admin_permissions(collection_id, sender.clone())?;14361437 // check schema limit1438 ensure!(schema.len() as u32 <= ChainLimit::get().offchain_schema_limit, "");14391440 let mut target_collection = <Collection<T>>::get(collection_id);1441 target_collection.offchain_schema = schema;1442 <Collection<T>>::insert(collection_id, target_collection);14431444 Ok(())1445 }14461447 /// Set const on-chain data schema.1448 /// 1449 /// # Permissions1450 /// 1451 /// * Collection Owner1452 /// * Collection Admin1453 /// 1454 /// # Arguments1455 /// 1456 /// * collection_id.1457 /// 1458 /// * schema: String representing the const on-chain data schema.1459 #[weight = <T as Config>::WeightInfo::set_const_on_chain_schema()]1460 #[transactional]1461 pub fn set_const_on_chain_schema (1462 origin,1463 collection_id: CollectionId,1464 schema: Vec<u8>1465 ) -> DispatchResult {1466 let sender = ensure_signed(origin)?;1467 Self::check_owner_or_admin_permissions(collection_id, sender.clone())?;14681469 // check schema limit1470 ensure!(schema.len() as u32 <= ChainLimit::get().const_on_chain_schema_limit, "");14711472 let mut target_collection = <Collection<T>>::get(collection_id);1473 target_collection.const_on_chain_schema = schema;1474 <Collection<T>>::insert(collection_id, target_collection);14751476 Ok(())1477 }14781479 /// Set variable on-chain data schema.1480 /// 1481 /// # Permissions1482 /// 1483 /// * Collection Owner1484 /// * Collection Admin1485 /// 1486 /// # Arguments1487 /// 1488 /// * collection_id.1489 /// 1490 /// * schema: String representing the variable on-chain data schema.1491 #[weight = <T as Config>::WeightInfo::set_const_on_chain_schema()]1492 #[transactional]1493 pub fn set_variable_on_chain_schema (1494 origin,1495 collection_id: CollectionId,1496 schema: Vec<u8>1497 ) -> DispatchResult {1498 let sender = ensure_signed(origin)?;1499 Self::check_owner_or_admin_permissions(collection_id, sender.clone())?;15001501 // check schema limit1502 ensure!(schema.len() as u32 <= ChainLimit::get().variable_on_chain_schema_limit, "");15031504 let mut target_collection = <Collection<T>>::get(collection_id);1505 target_collection.variable_on_chain_schema = schema;1506 <Collection<T>>::insert(collection_id, target_collection);15071508 Ok(())1509 }15101511 // Sudo permissions function1512 #[weight = <T as Config>::WeightInfo::set_chain_limits()]1513 #[transactional]1514 pub fn set_chain_limits(1515 origin,1516 limits: ChainLimits1517 ) -> DispatchResult {15181519 #[cfg(not(feature = "runtime-benchmarks"))]1520 ensure_root(origin)?;15211522 <ChainLimit>::put(limits);1523 Ok(())1524 }15251526 /// Enable smart contract self-sponsoring.1527 /// 1528 /// # Permissions1529 /// 1530 /// * Contract Owner1531 /// 1532 /// # Arguments1533 /// 1534 /// * contract address1535 /// * enable flag1536 /// 1537 #[weight = <T as Config>::WeightInfo::enable_contract_sponsoring()]1538 #[transactional]1539 pub fn enable_contract_sponsoring(1540 origin,1541 contract_address: T::AccountId,1542 enable: bool1543 ) -> DispatchResult {15441545 let sender = ensure_signed(origin)?;15461547 #[cfg(feature = "runtime-benchmarks")]1548 <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());15491550 Self::ensure_contract_owned(sender, &contract_address)?;15511552 <ContractSelfSponsoring<T>>::insert(contract_address, enable);1553 Ok(())1554 }15551556 /// Set the rate limit for contract sponsoring to specified number of blocks.1557 /// 1558 /// If not set (has the default value of 0 blocks), the sponsoring will be disabled. 1559 /// If set to the number B (for blocks), the transactions will be sponsored with a rate 1560 /// limit of B, i.e. fees for every transaction sent to this smart contract will be paid 1561 /// from contract endowment if there are at least B blocks between such transactions. 1562 /// Nonetheless, if transactions are sent more frequently, the fees are paid by the sender.1563 /// 1564 /// # Permissions1565 /// 1566 /// * Contract Owner1567 /// 1568 /// # Arguments1569 /// 1570 /// -`contract_address`: Address of the contract to sponsor1571 /// -`rate_limit`: Number of blocks to wait until the next sponsored transaction is allowed1572 /// 1573 #[weight = <T as Config>::WeightInfo::set_contract_sponsoring_rate_limit()]1574 #[transactional]1575 pub fn set_contract_sponsoring_rate_limit(1576 origin,1577 contract_address: T::AccountId,1578 rate_limit: T::BlockNumber1579 ) -> DispatchResult {1580 let sender = ensure_signed(origin)?;15811582 #[cfg(feature = "runtime-benchmarks")]1583 <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());15841585 Self::ensure_contract_owned(sender, &contract_address)?;1586 <ContractSponsoringRateLimit<T>>::insert(contract_address, rate_limit);1587 Ok(())1588 }15891590 /// Enable the white list for a contract. Only addresses added to the white list with addToContractWhiteList will be able to call this smart contract.1591 /// 1592 /// # Permissions1593 /// 1594 /// * Address that deployed smart contract.1595 /// 1596 /// # Arguments1597 /// 1598 /// -`contract_address`: Address of the contract.1599 /// 1600 /// - `enable`: . 1601 #[weight = <T as Config>::WeightInfo::toggle_contract_white_list()]1602 #[transactional]1603 pub fn toggle_contract_white_list(1604 origin,1605 contract_address: T::AccountId,1606 enable: bool1607 ) -> DispatchResult {1608 let sender = ensure_signed(origin)?;16091610 #[cfg(feature = "runtime-benchmarks")]1611 <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());16121613 Self::ensure_contract_owned(sender, &contract_address)?;1614 <ContractWhiteListEnabled<T>>::insert(contract_address, enable);1615 Ok(())1616 }1617 1618 /// Add an address to smart contract white list.1619 /// 1620 /// # Permissions1621 /// 1622 /// * Address that deployed smart contract.1623 /// 1624 /// # Arguments1625 /// 1626 /// -`contract_address`: Address of the contract.1627 ///1628 /// -`account_address`: Address to add.1629 #[weight = <T as Config>::WeightInfo::add_to_contract_white_list()]1630 #[transactional]1631 pub fn add_to_contract_white_list(1632 origin,1633 contract_address: T::AccountId,1634 account_address: T::AccountId1635 ) -> DispatchResult {1636 let sender = ensure_signed(origin)?;16371638 #[cfg(feature = "runtime-benchmarks")]1639 <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());1640 1641 Self::ensure_contract_owned(sender, &contract_address)?; 1642 <ContractWhiteList<T>>::insert(contract_address, account_address, true);1643 Ok(())1644 }16451646 /// Remove an address from smart contract white list.1647 /// 1648 /// # Permissions1649 /// 1650 /// * Address that deployed smart contract.1651 /// 1652 /// # Arguments1653 /// 1654 /// -`contract_address`: Address of the contract.1655 ///1656 /// -`account_address`: Address to remove.1657 #[weight = <T as Config>::WeightInfo::remove_from_contract_white_list()]1658 #[transactional]1659 pub fn remove_from_contract_white_list(1660 origin,1661 contract_address: T::AccountId,1662 account_address: T::AccountId1663 ) -> DispatchResult {1664 let sender = ensure_signed(origin)?;16651666 #[cfg(feature = "runtime-benchmarks")]1667 <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());16681669 Self::ensure_contract_owned(sender, &contract_address)?;1670 <ContractWhiteList<T>>::remove(contract_address, account_address);1671 Ok(())1672 }16731674 #[weight = <T as Config>::WeightInfo::set_collection_limits()]1675 #[transactional]1676 pub fn set_collection_limits(1677 origin,1678 collection_id: u32,1679 new_limits: CollectionLimits,1680 ) -> DispatchResult {1681 let sender = ensure_signed(origin)?;1682 Self::check_owner_permissions(collection_id, sender.clone())?;1683 let mut target_collection = <Collection<T>>::get(collection_id);1684 let old_limits = target_collection.limits;1685 let chain_limits = ChainLimit::get();16861687 // collection bounds1688 ensure!(new_limits.sponsor_transfer_timeout <= MAX_SPONSOR_TIMEOUT &&1689 new_limits.account_token_ownership_limit <= MAX_TOKEN_OWNERSHIP && 1690 new_limits.sponsored_data_size <= chain_limits.custom_data_limit,1691 Error::<T>::CollectionLimitBoundsExceeded);16921693 // token_limit check prev1694 ensure!(old_limits.token_limit >= new_limits.token_limit, Error::<T>::CollectionTokenLimitExceeded);1695 ensure!(new_limits.token_limit > 0, Error::<T>::CollectionTokenLimitExceeded);16961697 ensure!(1698 (old_limits.owner_can_transfer || !new_limits.owner_can_transfer) &&1699 (old_limits.owner_can_destroy || !new_limits.owner_can_destroy),1700 Error::<T>::OwnerPermissionsCantBeReverted,1701 );17021703 target_collection.limits = new_limits;1704 <Collection<T>>::insert(collection_id, target_collection);17051706 Ok(())1707 } 1708 }1709}17101711impl<T: Config> Module<T> {17121713 pub fn transfer_internal(sender: T::AccountId, recipient: T::AccountId, collection_id: CollectionId, item_id: TokenId, value: u128) -> DispatchResult {17141715 let target_collection = <Collection<T>>::get(collection_id);17161717 // Limits check1718 Self::is_correct_transfer(collection_id, &target_collection, &recipient)?;17191720 // Transfer permissions check1721 ensure!(Self::is_item_owner(sender.clone(), collection_id, item_id) ||1722 Self::is_owner_or_admin_permissions(collection_id, sender.clone()),1723 Error::<T>::NoPermission);17241725 if target_collection.access == AccessMode::WhiteList {1726 Self::check_white_list(collection_id, &sender)?;1727 Self::check_white_list(collection_id, &recipient)?;1728 }17291730 match target_collection.mode1731 {1732 CollectionMode::NFT => Self::transfer_nft(collection_id, item_id, sender.clone(), recipient.clone())?,1733 CollectionMode::Fungible(_) => Self::transfer_fungible(collection_id, value, &sender, &recipient)?,1734 CollectionMode::ReFungible => Self::transfer_refungible(collection_id, item_id, value, sender.clone(), recipient.clone())?,1735 _ => ()1736 };17371738 Self::deposit_event(RawEvent::Transfer(collection_id, item_id, sender, recipient, value));17391740 Ok(())1741 }174217431744 fn is_correct_transfer(collection_id: CollectionId, collection: &CollectionType<T::AccountId>, recipient: &T::AccountId) -> DispatchResult {17451746 // check token limit and account token limit1747 let account_items: u32 = <AddressTokens<T>>::get(collection_id, recipient).len() as u32;1748 ensure!(collection.limits.account_token_ownership_limit > account_items, Error::<T>::AccountTokenLimitExceeded);1749 1750 Ok(())1751 }17521753 fn can_create_items_in_collection(collection_id: CollectionId, collection: &CollectionType<T::AccountId>, sender: &T::AccountId, owner: &T::AccountId) -> DispatchResult {17541755 // check token limit and account token limit1756 let total_items: u32 = ItemListIndex::get(collection_id);1757 let account_items: u32 = <AddressTokens<T>>::get(collection_id, owner).len() as u32;1758 ensure!(collection.limits.token_limit > total_items, Error::<T>::CollectionTokenLimitExceeded);1759 ensure!(collection.limits.account_token_ownership_limit > account_items, Error::<T>::AccountTokenLimitExceeded);17601761 if !Self::is_owner_or_admin_permissions(collection_id, sender.clone()) {1762 ensure!(collection.mint_mode == true, Error::<T>::PublicMintingNotAllowed);1763 Self::check_white_list(collection_id, owner)?;1764 Self::check_white_list(collection_id, sender)?;1765 }17661767 Ok(())1768 }17691770 fn validate_create_item_args(target_collection: &CollectionType<T::AccountId>, data: &CreateItemData) -> DispatchResult {1771 match target_collection.mode1772 {1773 CollectionMode::NFT => {1774 if let CreateItemData::NFT(data) = data {1775 // check sizes1776 ensure!(ChainLimit::get().custom_data_limit >= data.const_data.len() as u32, Error::<T>::TokenConstDataLimitExceeded);1777 ensure!(ChainLimit::get().custom_data_limit >= data.variable_data.len() as u32, Error::<T>::TokenVariableDataLimitExceeded);1778 } else {1779 fail!(Error::<T>::NotNftDataUsedToMintNftCollectionToken);1780 }1781 },1782 CollectionMode::Fungible(_) => {1783 if let CreateItemData::Fungible(_) = data {1784 } else {1785 fail!(Error::<T>::NotFungibleDataUsedToMintFungibleCollectionToken);1786 }1787 },1788 CollectionMode::ReFungible => {1789 if let CreateItemData::ReFungible(data) = data {17901791 // check sizes1792 ensure!(ChainLimit::get().custom_data_limit >= data.const_data.len() as u32, Error::<T>::TokenConstDataLimitExceeded);1793 ensure!(ChainLimit::get().custom_data_limit >= data.variable_data.len() as u32, Error::<T>::TokenVariableDataLimitExceeded);17941795 // Check refungibility limits1796 ensure!(data.pieces <= MAX_REFUNGIBLE_PIECES, Error::<T>::WrongRefungiblePieces);1797 ensure!(data.pieces > 0, Error::<T>::WrongRefungiblePieces);1798 } else {1799 fail!(Error::<T>::NotReFungibleDataUsedToMintReFungibleCollectionToken);1800 }1801 },1802 _ => { fail!(Error::<T>::UnexpectedCollectionType); }1803 };18041805 Ok(())1806 }18071808 fn create_item_no_validation(collection_id: CollectionId, owner: T::AccountId, data: CreateItemData) -> DispatchResult {1809 match data1810 {1811 CreateItemData::NFT(data) => {1812 let item = NftItemType {1813 owner: owner.clone(),1814 const_data: data.const_data,1815 variable_data: data.variable_data1816 };18171818 Self::add_nft_item(collection_id, item)?;1819 },1820 CreateItemData::Fungible(data) => {1821 Self::add_fungible_item(collection_id, &owner, data.value)?;1822 },1823 CreateItemData::ReFungible(data) => {1824 let mut owner_list = Vec::new();1825 owner_list.push(Ownership {owner: owner.clone(), fraction: data.pieces});18261827 let item = ReFungibleItemType {1828 owner: owner_list,1829 const_data: data.const_data,1830 variable_data: data.variable_data1831 };18321833 Self::add_refungible_item(collection_id, item)?;1834 }1835 };18361837 Ok(())1838 }18391840 fn add_fungible_item(collection_id: CollectionId, owner: &T::AccountId, value: u128) -> DispatchResult {18411842 // Does new owner already have an account?1843 let mut balance: u128 = 0;1844 if <FungibleItemList<T>>::contains_key(collection_id, owner) {1845 balance = <FungibleItemList<T>>::get(collection_id, owner).value;1846 } 18471848 // Mint 1849 let item = FungibleItemType {1850 value: balance + value1851 };1852 <FungibleItemList<T>>::insert(collection_id, (*owner).clone(), item);18531854 // Update balance1855 let new_balance = <Balance<T>>::get(collection_id, owner)1856 .checked_add(value)1857 .ok_or(Error::<T>::NumOverflow)?;1858 <Balance<T>>::insert(collection_id, (*owner).clone(), new_balance);18591860 Self::deposit_event(RawEvent::ItemCreated(collection_id, 0, owner.clone()));1861 Ok(())1862 }18631864 fn add_refungible_item(collection_id: CollectionId, item: ReFungibleItemType<T::AccountId>) -> DispatchResult {1865 let current_index = <ItemListIndex>::get(collection_id)1866 .checked_add(1)1867 .ok_or(Error::<T>::NumOverflow)?;1868 let itemcopy = item.clone();18691870 ensure!(1871 item.owner.len() == 1,1872 Error::<T>::BadCreateRefungibleCall,1873 );1874 let item_owner = item.owner.first().expect("only one owner is defined");18751876 let value = item_owner.fraction;1877 let owner = item_owner.owner.clone();18781879 Self::add_token_index(collection_id, current_index, &owner)?;18801881 <ItemListIndex>::insert(collection_id, current_index);1882 <ReFungibleItemList<T>>::insert(collection_id, current_index, itemcopy);18831884 // Update balance1885 let new_balance = <Balance<T>>::get(collection_id, &owner)1886 .checked_add(value)1887 .ok_or(Error::<T>::NumOverflow)?;1888 <Balance<T>>::insert(collection_id, owner.clone(), new_balance);18891890 Self::deposit_event(RawEvent::ItemCreated(collection_id, current_index, owner));1891 Ok(())1892 }18931894 fn add_nft_item(collection_id: CollectionId, item: NftItemType<T::AccountId>) -> DispatchResult {1895 let current_index = <ItemListIndex>::get(collection_id)1896 .checked_add(1)1897 .ok_or(Error::<T>::NumOverflow)?;18981899 let item_owner = item.owner.clone();1900 Self::add_token_index(collection_id, current_index, &item.owner)?;19011902 <ItemListIndex>::insert(collection_id, current_index);1903 <NftItemList<T>>::insert(collection_id, current_index, item);19041905 // Update balance1906 let new_balance = <Balance<T>>::get(collection_id, item_owner.clone())1907 .checked_add(1)1908 .ok_or(Error::<T>::NumOverflow)?;1909 <Balance<T>>::insert(collection_id, item_owner.clone(), new_balance);19101911 Self::deposit_event(RawEvent::ItemCreated(collection_id, current_index, item_owner));1912 Ok(())1913 }19141915 fn burn_refungible_item(1916 collection_id: CollectionId,1917 item_id: TokenId,1918 owner: &T::AccountId,1919 ) -> DispatchResult {1920 ensure!(1921 <ReFungibleItemList<T>>::contains_key(collection_id, item_id),1922 Error::<T>::TokenNotFound1923 );1924 let mut token = <ReFungibleItemList<T>>::get(collection_id, item_id);1925 let rft_balance = token1926 .owner1927 .iter()1928 .find(|&i| i.owner == *owner)1929 .ok_or(Error::<T>::TokenNotFound)?;1930 Self::remove_token_index(collection_id, item_id, owner)?;19311932 // update balance1933 let new_balance = <Balance<T>>::get(collection_id, rft_balance.owner.clone())1934 .checked_sub(rft_balance.fraction)1935 .ok_or(Error::<T>::NumOverflow)?;1936 <Balance<T>>::insert(collection_id, rft_balance.owner.clone(), new_balance);19371938 // Re-create owners list with sender removed1939 let index = token1940 .owner1941 .iter()1942 .position(|i| i.owner == *owner)1943 .expect("owned item is exists");1944 token.owner.remove(index);1945 let owner_count = token.owner.len();19461947 // Burn the token completely if this was the last (only) owner1948 if owner_count == 0 {1949 <ReFungibleItemList<T>>::remove(collection_id, item_id);1950 }1951 else {1952 <ReFungibleItemList<T>>::insert(collection_id, item_id, token);1953 }19541955 Ok(())1956 }19571958 fn burn_nft_item(collection_id: CollectionId, item_id: TokenId) -> DispatchResult {1959 ensure!(1960 <NftItemList<T>>::contains_key(collection_id, item_id),1961 Error::<T>::TokenNotFound1962 );1963 let item = <NftItemList<T>>::get(collection_id, item_id);1964 Self::remove_token_index(collection_id, item_id, &item.owner)?;19651966 // update balance1967 let new_balance = <Balance<T>>::get(collection_id, &item.owner)1968 .checked_sub(1)1969 .ok_or(Error::<T>::NumOverflow)?;1970 <Balance<T>>::insert(collection_id, item.owner.clone(), new_balance);1971 <NftItemList<T>>::remove(collection_id, item_id);19721973 Ok(())1974 }19751976 fn burn_fungible_item(owner: &T::AccountId, collection_id: CollectionId, value: u128) -> DispatchResult {1977 ensure!(1978 <FungibleItemList<T>>::contains_key(collection_id, owner),1979 Error::<T>::TokenNotFound1980 );1981 let mut balance = <FungibleItemList<T>>::get(collection_id, owner);1982 ensure!(balance.value >= value, Error::<T>::TokenValueNotEnough);19831984 // update balance1985 let new_balance = <Balance<T>>::get(collection_id, owner)1986 .checked_sub(value)1987 .ok_or(Error::<T>::NumOverflow)?;1988 <Balance<T>>::insert(collection_id, (*owner).clone(), new_balance);19891990 if balance.value - value > 0 {1991 balance.value -= value;1992 <FungibleItemList<T>>::insert(collection_id, (*owner).clone(), balance);1993 }1994 else {1995 <FungibleItemList<T>>::remove(collection_id, owner);1996 }19971998 Ok(())1999 }20002001 fn collection_exists(collection_id: CollectionId) -> DispatchResult {2002 ensure!(2003 <Collection<T>>::contains_key(collection_id),2004 Error::<T>::CollectionNotFound2005 );2006 Ok(())2007 }20082009 fn check_owner_permissions(collection_id: CollectionId, subject: T::AccountId) -> DispatchResult {2010 Self::collection_exists(collection_id)?;20112012 let target_collection = <Collection<T>>::get(collection_id);2013 ensure!(2014 subject == target_collection.owner,2015 Error::<T>::NoPermission2016 );20172018 Ok(())2019 }20202021 fn is_owner_or_admin_permissions(collection_id: CollectionId, subject: T::AccountId) -> bool {2022 let target_collection = <Collection<T>>::get(collection_id);2023 let mut result: bool = subject == target_collection.owner;2024 let exists = <AdminList<T>>::contains_key(collection_id);20252026 if !result & exists {2027 if <AdminList<T>>::get(collection_id).contains(&subject) {2028 result = true2029 }2030 }20312032 result2033 }20342035 fn check_owner_or_admin_permissions(2036 collection_id: CollectionId,2037 subject: T::AccountId,2038 ) -> DispatchResult {2039 Self::collection_exists(collection_id)?;2040 let result = Self::is_owner_or_admin_permissions(collection_id, subject.clone());20412042 ensure!(2043 result,2044 Error::<T>::NoPermission2045 );2046 Ok(())2047 }20482049 fn owned_amount(2050 subject: T::AccountId,2051 collection_id: CollectionId,2052 item_id: TokenId,2053 ) -> Option<u128> {2054 let target_collection = <Collection<T>>::get(collection_id);20552056 match target_collection.mode {2057 CollectionMode::NFT => {2058 if <NftItemList<T>>::get(collection_id, item_id).owner == subject {2059 return Some(1)2060 }2061 None2062 },2063 CollectionMode::Fungible(_) => {2064 if <FungibleItemList<T>>::contains_key(collection_id, &subject) {2065 return Some(<FungibleItemList<T>>::get(collection_id, &subject)2066 .value);2067 }2068 None2069 },2070 CollectionMode::ReFungible => <ReFungibleItemList<T>>::get(collection_id, item_id)2071 .owner2072 .iter()2073 .find(|i| i.owner == subject)2074 .map(|i| i.fraction),2075 CollectionMode::Invalid => None,2076 }2077 }20782079 fn is_item_owner(subject: T::AccountId, collection_id: CollectionId, item_id: TokenId) -> bool {2080 let target_collection = <Collection<T>>::get(collection_id);20812082 match target_collection.mode {2083 CollectionMode::NFT => {2084 <NftItemList<T>>::get(collection_id, item_id).owner == subject2085 }2086 CollectionMode::Fungible(_) => {2087 <FungibleItemList<T>>::contains_key(collection_id, &subject)2088 }2089 CollectionMode::ReFungible => {2090 <ReFungibleItemList<T>>::get(collection_id, item_id)2091 .owner2092 .iter()2093 .any(|i| i.owner == subject)2094 }2095 CollectionMode::Invalid => false,2096 }2097 }20982099 fn check_white_list(collection_id: CollectionId, address: &T::AccountId) -> DispatchResult {2100 let mes = Error::<T>::AddresNotInWhiteList;2101 ensure!(<WhiteList<T>>::contains_key(collection_id, address), mes);21022103 Ok(())2104 }21052106 /// Check if token exists. In case of Fungible, check if there is an entry for 2107 /// the owner in fungible balances double map2108 fn token_exists(2109 collection_id: CollectionId,2110 item_id: TokenId,2111 owner: &T::AccountId2112 ) -> DispatchResult {2113 let target_collection = <Collection<T>>::get(collection_id);2114 let exists = match target_collection.mode2115 {2116 CollectionMode::NFT => <NftItemList<T>>::contains_key(collection_id, item_id),2117 CollectionMode::Fungible(_) => <FungibleItemList<T>>::contains_key(collection_id, owner),2118 CollectionMode::ReFungible => <ReFungibleItemList<T>>::contains_key(collection_id, item_id),2119 _ => false2120 };21212122 ensure!(exists == true, Error::<T>::TokenNotFound);2123 Ok(())2124 }21252126 fn transfer_fungible(2127 collection_id: CollectionId,2128 value: u128,2129 owner: &T::AccountId,2130 recipient: &T::AccountId,2131 ) -> DispatchResult {2132 Self::token_exists(collection_id, 0, owner)?;21332134 let mut balance = <FungibleItemList<T>>::get(collection_id, owner);2135 ensure!(balance.value >= value, Error::<T>::TokenValueTooLow);21362137 // Send balance to recipient (updates balanceOf of recipient)2138 Self::add_fungible_item(collection_id, recipient, value)?;21392140 // update balanceOf of sender2141 <Balance<T>>::insert(collection_id, (*owner).clone(), balance.value - value);21422143 // Reduce or remove sender2144 if balance.value == value {2145 <FungibleItemList<T>>::remove(collection_id, owner);2146 }2147 else {2148 balance.value -= value;2149 <FungibleItemList<T>>::insert(collection_id, (*owner).clone(), balance);2150 }21512152 Ok(())2153 }21542155 fn transfer_refungible(2156 collection_id: CollectionId,2157 item_id: TokenId,2158 value: u128,2159 owner: T::AccountId,2160 new_owner: T::AccountId,2161 ) -> DispatchResult {2162 Self::token_exists(collection_id, item_id, &owner)?;21632164 let full_item = <ReFungibleItemList<T>>::get(collection_id, item_id);2165 let item = full_item2166 .owner2167 .iter()2168 .filter(|i| i.owner == owner)2169 .next()2170 .ok_or(Error::<T>::TokenNotFound)?;2171 let amount = item.fraction;21722173 ensure!(amount >= value, Error::<T>::TokenValueTooLow);21742175 // update balance2176 let balance_old_owner = <Balance<T>>::get(collection_id, item.owner.clone())2177 .checked_sub(value)2178 .ok_or(Error::<T>::NumOverflow)?;2179 <Balance<T>>::insert(collection_id, item.owner.clone(), balance_old_owner);21802181 let balance_new_owner = <Balance<T>>::get(collection_id, new_owner.clone())2182 .checked_add(value)2183 .ok_or(Error::<T>::NumOverflow)?;2184 <Balance<T>>::insert(collection_id, new_owner.clone(), balance_new_owner);21852186 let old_owner = item.owner.clone();2187 let new_owner_has_account = full_item.owner.iter().any(|i| i.owner == new_owner);21882189 // transfer2190 if amount == value && !new_owner_has_account {2191 // change owner2192 // new owner do not have account2193 let mut new_full_item = full_item.clone();2194 new_full_item2195 .owner2196 .iter_mut()2197 .find(|i| i.owner == owner)2198 .expect("old owner does present in refungible")2199 .owner = new_owner.clone();2200 <ReFungibleItemList<T>>::insert(collection_id, item_id, new_full_item);22012202 // update index collection2203 Self::move_token_index(collection_id, item_id, &old_owner, &new_owner)?;2204 } else {2205 let mut new_full_item = full_item.clone();2206 new_full_item2207 .owner2208 .iter_mut()2209 .find(|i| i.owner == owner)2210 .expect("old owner does present in refungible")2211 .fraction -= value;22122213 // separate amount2214 if new_owner_has_account {2215 // new owner has account2216 new_full_item2217 .owner2218 .iter_mut()2219 .find(|i| i.owner == new_owner)2220 .expect("new owner has account")2221 .fraction += value;2222 } else {2223 // new owner do not have account2224 new_full_item.owner.push(Ownership {2225 owner: new_owner.clone(),2226 fraction: value,2227 });2228 Self::add_token_index(collection_id, item_id, &new_owner)?;2229 }22302231 <ReFungibleItemList<T>>::insert(collection_id, item_id, new_full_item);2232 }22332234 Ok(())2235 }22362237 fn transfer_nft(2238 collection_id: CollectionId,2239 item_id: TokenId,2240 sender: T::AccountId,2241 new_owner: T::AccountId,2242 ) -> DispatchResult {2243 Self::token_exists(collection_id, item_id, &sender)?;22442245 let mut item = <NftItemList<T>>::get(collection_id, item_id);22462247 ensure!(2248 sender == item.owner,2249 Error::<T>::MustBeTokenOwner2250 );22512252 // update balance2253 let balance_old_owner = <Balance<T>>::get(collection_id, item.owner.clone())2254 .checked_sub(1)2255 .ok_or(Error::<T>::NumOverflow)?;2256 <Balance<T>>::insert(collection_id, item.owner.clone(), balance_old_owner);22572258 let balancenew_owner = <Balance<T>>::get(collection_id, new_owner.clone())2259 .checked_add(1)2260 .ok_or(Error::<T>::NumOverflow)?;2261 <Balance<T>>::insert(collection_id, new_owner.clone(), balancenew_owner);22622263 // change owner2264 let old_owner = item.owner.clone();2265 item.owner = new_owner.clone();2266 <NftItemList<T>>::insert(collection_id, item_id, item);22672268 // update index collection2269 Self::move_token_index(collection_id, item_id, &old_owner, &new_owner)?;22702271 Ok(())2272 }2273 2274 fn set_re_fungible_variable_data(2275 collection_id: CollectionId,2276 item_id: TokenId,2277 data: Vec<u8>2278 ) -> DispatchResult {2279 let mut item = <ReFungibleItemList<T>>::get(collection_id, item_id);22802281 item.variable_data = data;22822283 <ReFungibleItemList<T>>::insert(collection_id, item_id, item);22842285 Ok(())2286 }22872288 fn set_nft_variable_data(2289 collection_id: CollectionId,2290 item_id: TokenId,2291 data: Vec<u8>2292 ) -> DispatchResult {2293 let mut item = <NftItemList<T>>::get(collection_id, item_id);2294 2295 item.variable_data = data;22962297 <NftItemList<T>>::insert(collection_id, item_id, item);2298 2299 Ok(())2300 }23012302 fn init_collection(item: &CollectionType<T::AccountId>) {2303 // check params2304 assert!(2305 item.decimal_points <= MAX_DECIMAL_POINTS,2306 "decimal_points parameter must be lower than MAX_DECIMAL_POINTS"2307 );2308 assert!(2309 item.name.len() <= 64,2310 "Collection name can not be longer than 63 char"2311 );2312 assert!(2313 item.name.len() <= 256,2314 "Collection description can not be longer than 255 char"2315 );2316 assert!(2317 item.token_prefix.len() <= 16,2318 "Token prefix can not be longer than 15 char"2319 );23202321 // Generate next collection ID2322 let next_id = CreatedCollectionCount::get()2323 .checked_add(1)2324 .unwrap();23252326 CreatedCollectionCount::put(next_id);2327 }23282329 fn init_nft_token(collection_id: CollectionId, item: &NftItemType<T::AccountId>) {2330 let current_index = <ItemListIndex>::get(collection_id)2331 .checked_add(1)2332 .unwrap();23332334 let item_owner = item.owner.clone();2335 Self::add_token_index(collection_id, current_index, &item.owner).unwrap();23362337 <ItemListIndex>::insert(collection_id, current_index);23382339 // Update balance2340 let new_balance = <Balance<T>>::get(collection_id, &item_owner)2341 .checked_add(1)2342 .unwrap();2343 <Balance<T>>::insert(collection_id, item_owner.clone(), new_balance);2344 }23452346 fn init_fungible_token(collection_id: CollectionId, owner: &T::AccountId, item: &FungibleItemType) {2347 let current_index = <ItemListIndex>::get(collection_id)2348 .checked_add(1)2349 .unwrap();23502351 Self::add_token_index(collection_id, current_index, owner).unwrap();23522353 <ItemListIndex>::insert(collection_id, current_index);23542355 // Update balance2356 let new_balance = <Balance<T>>::get(collection_id, owner)2357 .checked_add(item.value)2358 .unwrap();2359 <Balance<T>>::insert(collection_id, (*owner).clone(), new_balance);2360 }23612362 fn init_refungible_token(collection_id: CollectionId, item: &ReFungibleItemType<T::AccountId>) {2363 let current_index = <ItemListIndex>::get(collection_id)2364 .checked_add(1)2365 .unwrap();23662367 let value = item.owner.first().unwrap().fraction;2368 let owner = item.owner.first().unwrap().owner.clone();23692370 Self::add_token_index(collection_id, current_index, &owner).unwrap();23712372 <ItemListIndex>::insert(collection_id, current_index);23732374 // Update balance2375 let new_balance = <Balance<T>>::get(collection_id, &owner)2376 .checked_add(value)2377 .unwrap();2378 <Balance<T>>::insert(collection_id, owner.clone(), new_balance);2379 }23802381 fn add_token_index(collection_id: CollectionId, item_index: TokenId, owner: &T::AccountId) -> DispatchResult {23822383 // add to account limit2384 if <AccountItemCount<T>>::contains_key(owner) {23852386 // bound Owned tokens by a single address2387 let count = <AccountItemCount<T>>::get(owner);2388 ensure!(count < ChainLimit::get().account_token_ownership_limit, Error::<T>::AddressOwnershipLimitExceeded);23892390 <AccountItemCount<T>>::insert(owner.clone(), count2391 .checked_add(1)2392 .ok_or(Error::<T>::NumOverflow)?);2393 }2394 else {2395 <AccountItemCount<T>>::insert(owner.clone(), 1);2396 }23972398 let list_exists = <AddressTokens<T>>::contains_key(collection_id, owner);2399 if list_exists {2400 let mut list = <AddressTokens<T>>::get(collection_id, owner);2401 let item_contains = list.contains(&item_index.clone());24022403 if !item_contains {2404 list.push(item_index.clone());2405 }24062407 <AddressTokens<T>>::insert(collection_id, owner.clone(), list);2408 } else {2409 let mut itm = Vec::new();2410 itm.push(item_index.clone());2411 <AddressTokens<T>>::insert(collection_id, owner.clone(), itm);2412 }24132414 Ok(())2415 }24162417 fn remove_token_index(2418 collection_id: CollectionId,2419 item_index: TokenId,2420 owner: &T::AccountId,2421 ) -> DispatchResult {24222423 // update counter2424 <AccountItemCount<T>>::insert(owner.clone(), 2425 <AccountItemCount<T>>::get(owner)2426 .checked_sub(1)2427 .ok_or(Error::<T>::NumOverflow)?);242824292430 let list_exists = <AddressTokens<T>>::contains_key(collection_id, owner);2431 if list_exists {2432 let mut list = <AddressTokens<T>>::get(collection_id, owner);2433 let item_contains = list.contains(&item_index.clone());24342435 if item_contains {2436 list.retain(|&item| item != item_index);2437 <AddressTokens<T>>::insert(collection_id, owner.clone(), list);2438 }2439 }24402441 Ok(())2442 }24432444 fn move_token_index(2445 collection_id: CollectionId,2446 item_index: TokenId,2447 old_owner: &T::AccountId,2448 new_owner: &T::AccountId,2449 ) -> DispatchResult {2450 Self::remove_token_index(collection_id, item_index, old_owner)?;2451 Self::add_token_index(collection_id, item_index, new_owner)?;24522453 Ok(())2454 }2455 2456 fn ensure_contract_owned(account: T::AccountId, contract: &T::AccountId) -> DispatchResult {2457 if <ContractOwner<T>>::contains_key(contract.clone()) {2458 let owner = <ContractOwner<T>>::get(contract);2459 ensure!(account == owner, Error::<T>::NoPermission);2460 } else {2461 fail!(Error::<T>::NoPermission);2462 }24632464 Ok(())2465 }2466}24672468////////////////////////////////////////////////////////////////////////////////////////////////////2469// Economic models2470// #region24712472/// Fee multiplier.2473pub type Multiplier = FixedU128;24742475type BalanceOf<T> = <<T as pallet_transaction_payment::Config>::OnChargeTransaction as pallet_transaction_payment::OnChargeTransaction<T>>::Balance;24762477/// Require the transactor pay for themselves and maybe include a tip to gain additional priority2478/// in the queue.2479#[derive(Encode, Decode, Clone, Eq, PartialEq)]2480pub struct ChargeTransactionPayment<T: Config>(#[codec(compact)] BalanceOf<T>);24812482impl<T: Config + Send + Sync> sp_std::fmt::Debug 2483 for ChargeTransactionPayment<T>2484{2485 #[cfg(feature = "std")]2486 fn fmt(&self, f: &mut sp_std::fmt::Formatter) -> sp_std::fmt::Result {2487 write!(f, "ChargeTransactionPayment<{:?}>", self.0)2488 }2489 #[cfg(not(feature = "std"))]2490 fn fmt(&self, _: &mut sp_std::fmt::Formatter) -> sp_std::fmt::Result {2491 Ok(())2492 }2493}24942495impl<T: Config> ChargeTransactionPayment<T>2496where2497 T::Call: Dispatchable<Info=DispatchInfo, PostInfo=PostDispatchInfo> + IsSubType<Call<T>> + IsSubType<pallet_contracts::Call<T>>,2498 BalanceOf<T>: Send + Sync + From<u64> + FixedPointOperand,2499 T::AccountId: AsRef<[u8]>,2500 T::AccountId: UncheckedFrom<T::Hash>,2501{2502 fn traditional_fee(2503 len: usize,2504 info: &DispatchInfoOf<T::Call>,2505 tip: BalanceOf<T>,2506 ) -> BalanceOf<T>2507 where2508 T::Call: Dispatchable<Info = DispatchInfo>,2509 {2510 <pallet_transaction_payment::Module<T>>::compute_fee(len as u32, info, tip)2511 }25122513 fn get_priority(len: usize, info: &DispatchInfoOf<T::Call>, final_fee: BalanceOf<T>) -> TransactionPriority {2514 let weight_saturation = T::BlockWeights::get().max_block / info.weight.max(1);2515 let max_block_length = *T::BlockLength::get().max.get(DispatchClass::Normal);2516 let len_saturation = max_block_length as u64 / (len as u64).max(1);2517 let coefficient: BalanceOf<T> = weight_saturation2518 .min(len_saturation)2519 .saturated_into::<BalanceOf<T>>();2520 final_fee2521 .saturating_mul(coefficient)2522 .saturated_into::<TransactionPriority>()2523 }25242525 fn withdraw_fee(2526 &self,2527 who: &T::AccountId,2528 call: &T::Call,2529 info: &DispatchInfoOf<T::Call>,2530 len: usize,2531 ) -> Result<2532 (2533 BalanceOf<T>,2534 <<T as pallet_transaction_payment::Config>::OnChargeTransaction as pallet_transaction_payment::OnChargeTransaction<T>>::LiquidityInfo,2535 ),2536 TransactionValidityError,2537 > {2538 let tip = self.0;25392540 let fee = match call.is_sub_type() {2541 Some(Call::create_collection(..)) => T::CollectionCreationPrice::get(),2542 _ => Self::traditional_fee(len, info, tip),2543 };25442545 // Only mess with balances if fee is not zero.2546 if fee.is_zero() {2547 return <<T as pallet_transaction_payment::Config>::OnChargeTransaction as pallet_transaction_payment::OnChargeTransaction<T>>::withdraw_fee(who, call, info, fee, tip)2548 .map(|i| (fee, i));2549 }25502551 // Determine who is paying transaction fee based on ecnomic model2552 // Parse call to extract collection ID and access collection sponsor2553 let mut sponsor: T::AccountId = match IsSubType::<Call<T>>::is_sub_type(call) {2554 Some(Call::create_item(collection_id, _owner, _properties)) => {25552556 // sponsor timeout2557 let block_number = <system::Module<T>>::block_number() as T::BlockNumber;25582559 let collection = <Collection<T>>::get(collection_id);25602561 let limit = collection.limits.sponsor_transfer_timeout;2562 let mut sponsored = true;2563 if <CreateItemBasket<T>>::contains_key((collection_id, &who)) {2564 let last_tx_block = <CreateItemBasket<T>>::get((collection_id, &who));2565 let limit_time = last_tx_block + limit.into();2566 if block_number <= limit_time {2567 sponsored = false;2568 }2569 }2570 if sponsored {2571 <CreateItemBasket<T>>::insert((collection_id, who.clone()), block_number);2572 }25732574 // check free create limit2575 if (collection.limits.sponsored_data_size >= (_properties.len() as u32)) &&2576 (sponsored)2577 {2578 collection.sponsorship.sponsor()2579 .cloned()2580 .unwrap_or_default()2581 } else {2582 T::AccountId::default()2583 }2584 }2585 Some(Call::transfer(_new_owner, collection_id, item_id, _value)) => {2586 2587 let mut sponsor_transfer = false;2588 if <Collection<T>>::get(collection_id).sponsorship.confirmed() {25892590 let collection_limits = <Collection<T>>::get(collection_id).limits;2591 let collection_mode = <Collection<T>>::get(collection_id).mode;2592 2593 // sponsor timeout2594 let block_number = <system::Module<T>>::block_number() as T::BlockNumber;2595 sponsor_transfer = match collection_mode {2596 CollectionMode::NFT => {2597 2598 // get correct limit2599 let limit: u32 = if collection_limits.sponsor_transfer_timeout > 0 {2600 collection_limits.sponsor_transfer_timeout2601 } else {2602 ChainLimit::get().nft_sponsor_transfer_timeout2603 };2604 2605 let mut sponsored = true;2606 if <NftTransferBasket<T>>::contains_key(collection_id, item_id) {2607 let last_tx_block = <NftTransferBasket<T>>::get(collection_id, item_id);2608 let limit_time = last_tx_block + limit.into();2609 if block_number <= limit_time {2610 sponsored = false;2611 }2612 }2613 if sponsored {2614 <NftTransferBasket<T>>::insert(collection_id, item_id, block_number);2615 }26162617 sponsored2618 }2619 CollectionMode::Fungible(_) => {2620 2621 // get correct limit2622 let limit: u32 = if collection_limits.sponsor_transfer_timeout > 0 {2623 collection_limits.sponsor_transfer_timeout2624 } else {2625 ChainLimit::get().fungible_sponsor_transfer_timeout2626 };2627 2628 let block_number = <system::Module<T>>::block_number() as T::BlockNumber;2629 let mut sponsored = true;2630 if <FungibleTransferBasket<T>>::contains_key(collection_id, who) {2631 let last_tx_block = <FungibleTransferBasket<T>>::get(collection_id, who);2632 let limit_time = last_tx_block + limit.into();2633 if block_number <= limit_time {2634 sponsored = false;2635 }2636 }2637 if sponsored {2638 <FungibleTransferBasket<T>>::insert(collection_id, who, block_number);2639 }26402641 sponsored2642 }2643 CollectionMode::ReFungible => {2644 2645 // get correct limit2646 let limit: u32 = if collection_limits.sponsor_transfer_timeout > 0 {2647 collection_limits.sponsor_transfer_timeout2648 } else {2649 ChainLimit::get().refungible_sponsor_transfer_timeout2650 };2651 2652 let mut sponsored = true;2653 if <ReFungibleTransferBasket<T>>::contains_key(collection_id, item_id) {2654 let last_tx_block = <ReFungibleTransferBasket<T>>::get(collection_id, item_id);2655 let limit_time = last_tx_block + limit.into();2656 if block_number <= limit_time {2657 sponsored = false;2658 }2659 }2660 if sponsored {2661 <ReFungibleTransferBasket<T>>::insert(collection_id, item_id, block_number);2662 }26632664 sponsored2665 }2666 _ => {2667 false2668 },2669 };2670 }26712672 if !sponsor_transfer {2673 T::AccountId::default()2674 } else {2675 <Collection<T>>::get(collection_id).sponsorship.sponsor()2676 .cloned()2677 .unwrap_or_default()2678 }2679 }26802681 _ => T::AccountId::default(),2682 };26832684 // Sponsor smart contracts2685 sponsor = match IsSubType::<pallet_contracts::Call<T>>::is_sub_type(call) {26862687 // On instantiation: set the contract owner2688 Some(pallet_contracts::Call::instantiate(_endowment, _gas_limit, code_hash, _data, salt)) => {26892690 let new_contract_address = <pallet_contracts::Module<T>>::contract_address(2691 &who,2692 code_hash,2693 salt,2694 );2695 <ContractOwner<T>>::insert(new_contract_address.clone(), who.clone());26962697 T::AccountId::default()2698 },26992700 // On instantiation with code: set the contract owner2701 Some(pallet_contracts::Call::instantiate_with_code(_endowment, _gas_limit, _code, _data, _salt)) => {27022703 let new_contract_address = <pallet_contracts::Module<T>>::contract_address(2704 &who,2705 &T::Hashing::hash(&_code),2706 _salt,2707 );27082709 <ContractOwner<T>>::insert(new_contract_address.clone(), who.clone());27102711 T::AccountId::default()2712 }27132714 // When the contract is called, check if the sponsoring is enabled and pay fees from contract endowment if it is2715 Some(pallet_contracts::Call::call(dest, _value, _gas_limit, _data)) => {27162717 let called_contract: T::AccountId = T::Lookup::lookup((*dest).clone()).unwrap_or(T::AccountId::default());27182719 let owned_contract = <ContractOwner<T>>::contains_key(called_contract.clone())2720 && <ContractOwner<T>>::get(called_contract.clone()) == *who;2721 let white_list_enabled = <ContractWhiteListEnabled<T>>::contains_key(called_contract.clone()) && <ContractWhiteListEnabled<T>>::get(called_contract.clone());2722 2723 if !owned_contract && white_list_enabled {2724 if !<ContractWhiteList<T>>::contains_key(called_contract.clone(), who) {2725 return Err(InvalidTransaction::Call.into());2726 }2727 }27282729 let mut sponsor_transfer = false;2730 if <ContractSponsoringRateLimit<T>>::contains_key(called_contract.clone()) {2731 let last_tx_block = <ContractSponsorBasket<T>>::get((&called_contract, &who));2732 let block_number = <system::Module<T>>::block_number() as T::BlockNumber;2733 let rate_limit = <ContractSponsoringRateLimit<T>>::get(&called_contract);2734 let limit_time = last_tx_block + rate_limit;27352736 if block_number >= limit_time {2737 <ContractSponsorBasket<T>>::insert((called_contract.clone(), who.clone()), block_number);2738 sponsor_transfer = true;2739 }2740 } else {2741 sponsor_transfer = false;2742 }2743 2744 2745 let mut sp = T::AccountId::default();2746 if sponsor_transfer {2747 if <ContractSelfSponsoring<T>>::contains_key(called_contract.clone()) {2748 if <ContractSelfSponsoring<T>>::get(called_contract.clone()) {2749 sp = called_contract;2750 }2751 }2752 }27532754 sp2755 },27562757 _ => sponsor,2758 };27592760 let mut who_pays_fee: T::AccountId = sponsor.clone();2761 if sponsor == T::AccountId::default() {2762 who_pays_fee = who.clone();2763 }27642765 <<T as pallet_transaction_payment::Config>::OnChargeTransaction as pallet_transaction_payment::OnChargeTransaction<T>>::withdraw_fee(&who_pays_fee, call, info, fee, tip)2766 .map(|i| (fee, i))2767 }2768}276927702771impl<T: Config + Send + Sync> SignedExtension2772 for ChargeTransactionPayment<T>2773where2774 BalanceOf<T>: Send + Sync + From<u64> + FixedPointOperand,2775 T::Call: Dispatchable<Info = DispatchInfo, PostInfo = PostDispatchInfo> + IsSubType<Call<T>> + IsSubType<pallet_contracts::Call<T>>,2776 T::AccountId: AsRef<[u8]>,2777 T::AccountId: UncheckedFrom<T::Hash>,2778{2779 const IDENTIFIER: &'static str = "ChargeTransactionPayment";2780 type AccountId = T::AccountId;2781 type Call = T::Call;2782 type AdditionalSigned = ();2783 type Pre = (2784 // tip2785 BalanceOf<T>,2786 // who pays fee2787 Self::AccountId,2788 // imbalance resulting from withdrawing the fee2789 <<T as pallet_transaction_payment::Config>::OnChargeTransaction as pallet_transaction_payment::OnChargeTransaction<T>>::LiquidityInfo,2790 );2791 fn additional_signed(&self) -> sp_std::result::Result<(), TransactionValidityError> {2792 Ok(())2793 }27942795 fn validate(2796 &self,2797 who: &Self::AccountId,2798 call: &Self::Call,2799 info: &DispatchInfoOf<Self::Call>,2800 len: usize,2801 ) -> TransactionValidity {2802 let (fee, _) = self.withdraw_fee(who, call, info, len)?;2803 Ok(ValidTransaction {2804 priority: Self::get_priority(len, info, fee),2805 ..Default::default()2806 })2807 }28082809 fn pre_dispatch(2810 self,2811 who: &Self::AccountId,2812 call: &Self::Call,2813 info: &DispatchInfoOf<Self::Call>,2814 len: usize,2815 ) -> Result<Self::Pre, TransactionValidityError> {2816 let (_fee, imbalance) = self.withdraw_fee(who, call, info, len)?;2817 Ok((self.0, who.clone(), imbalance))2818 }28192820 fn post_dispatch(2821 pre: Self::Pre,2822 info: &DispatchInfoOf<Self::Call>,2823 post_info: &PostDispatchInfoOf<Self::Call>,2824 len: usize,2825 _result: &DispatchResult,2826 ) -> Result<(), TransactionValidityError> {2827 let (tip, who, imbalance) = pre;2828 let actual_fee = pallet_transaction_payment::Module::<T>::compute_actual_fee(2829 len as u32,2830 info,2831 post_info,2832 tip,2833 );2834 <T as pallet_transaction_payment::Config>::OnChargeTransaction::correct_and_deposit_fee(&who, info, post_info, actual_fee, tip, imbalance)?;2835 Ok(())2836 }2837}28382839// #endregion1//2// This file is subject to the terms and conditions defined in3// file 'LICENSE', which is part of this source code package.4//56#![recursion_limit = "1024"]78#![cfg_attr(not(feature = "std"), no_std)]910#[cfg(feature = "std")]11pub use std::*;1213#[cfg(feature = "std")]14pub use serde::*;1516use codec::{Decode, Encode};17pub use frame_support::{18 construct_runtime, decl_event, decl_module, decl_storage, decl_error,19 dispatch::DispatchResult,20 ensure, fail, parameter_types,21 traits::{22 Currency, ExistenceRequirement, Get, Imbalance, KeyOwnerProofSystem, OnUnbalanced,23 Randomness, IsSubType, WithdrawReasons,24 },25 weights::{26 constants::{BlockExecutionWeight, ExtrinsicBaseWeight, RocksDbWeight, WEIGHT_PER_SECOND},27 DispatchInfo, GetDispatchInfo, IdentityFee, Pays, PostDispatchInfo, Weight,28 WeightToFeePolynomial, DispatchClass,29 },30 StorageValue,31 transactional,32};3334use frame_system::{self as system, ensure_signed, ensure_root};35use sp_runtime::sp_std::prelude::Vec;36use sp_runtime::{37 traits::{38 Hash, DispatchInfoOf, Dispatchable, PostDispatchInfoOf, Saturating, SaturatedConversion, SignedExtension, Zero,39 },40 transaction_validity::{41 TransactionPriority, InvalidTransaction, TransactionValidity, TransactionValidityError, ValidTransaction,42 },43 FixedPointOperand, FixedU128,44};45use sp_runtime::traits::StaticLookup;46use pallet_contracts::chain_extension::UncheckedFrom;47use pallet_transaction_payment::OnChargeTransaction;4849#[cfg(test)]50mod mock;5152#[cfg(test)]53mod tests;5455mod default_weights;5657pub const MAX_DECIMAL_POINTS: DecimalPoints = 30;58pub const MAX_REFUNGIBLE_PIECES: u128 = 1_000_000_000_000_000_000_000;59pub const MAX_SPONSOR_TIMEOUT: u32 = 10_368_000;60pub const MAX_TOKEN_OWNERSHIP: u32 = 10_000_000;6162// Structs63// #region6465pub type CollectionId = u32;66pub type TokenId = u32;67pub type DecimalPoints = u8;6869#[derive(Encode, Decode, Eq, Debug, Clone, PartialEq)]70#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]71pub enum CollectionMode {72 Invalid,73 NFT,74 // decimal points75 Fungible(DecimalPoints),76 ReFungible,77}7879impl Default for CollectionMode {80 fn default() -> Self {81 Self::Invalid82 }83}8485impl Into<u8> for CollectionMode {86 fn into(self) -> u8 {87 match self {88 CollectionMode::Invalid => 0,89 CollectionMode::NFT => 1,90 CollectionMode::Fungible(_) => 2,91 CollectionMode::ReFungible => 3,92 }93 }94}9596#[derive(Encode, Decode, Eq, Debug, Clone, PartialEq)]97#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]98pub enum AccessMode {99 Normal,100 WhiteList,101}102impl Default for AccessMode {103 fn default() -> Self {104 Self::Normal105 }106}107108#[derive(Encode, Decode, Eq, Debug, Clone, PartialEq)]109#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]110pub enum SchemaVersion {111 ImageURL,112 Unique,113}114impl Default for SchemaVersion {115 fn default() -> Self {116 Self::ImageURL117 }118}119120#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]121#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]122pub struct Ownership<AccountId> {123 pub owner: AccountId,124 pub fraction: u128,125}126127#[derive(Encode, Decode, Debug, Clone, PartialEq)]128#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]129pub enum SponsorshipState<AccountId> {130 /// The fees are applied to the transaction sender131 Disabled,132 Unconfirmed(AccountId),133 /// Transactions are sponsored by specified account134 Confirmed(AccountId),135}136137impl<AccountId> SponsorshipState<AccountId> {138 fn sponsor(&self) -> Option<&AccountId> {139 match self {140 Self::Confirmed(sponsor) => Some(sponsor),141 _ => None,142 }143 }144145 fn pending_sponsor(&self) -> Option<&AccountId> {146 match self {147 Self::Unconfirmed(sponsor) | Self::Confirmed(sponsor) => Some(sponsor),148 _ => None,149 }150 }151152 fn confirmed(&self) -> bool {153 matches!(self, Self::Confirmed(_))154 }155}156157impl<T> Default for SponsorshipState<T> {158 fn default() -> Self {159 Self::Disabled160 }161}162163#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]164#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]165pub struct CollectionType<AccountId> {166 pub owner: AccountId,167 pub mode: CollectionMode,168 pub access: AccessMode,169 pub decimal_points: DecimalPoints,170 pub name: Vec<u16>, // 64 include null escape char171 pub description: Vec<u16>, // 256 include null escape char172 pub token_prefix: Vec<u8>, // 16 include null escape char173 pub mint_mode: bool,174 pub offchain_schema: Vec<u8>,175 pub schema_version: SchemaVersion,176 pub sponsorship: SponsorshipState<AccountId>,177 pub limits: CollectionLimits, // Collection private restrictions 178 pub variable_on_chain_schema: Vec<u8>, //179 pub const_on_chain_schema: Vec<u8>, //180}181182#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]183#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]184pub struct NftItemType<AccountId> {185 pub owner: AccountId,186 pub const_data: Vec<u8>,187 pub variable_data: Vec<u8>,188}189190#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]191#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]192pub struct FungibleItemType {193 pub value: u128,194}195196#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]197#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]198pub struct ReFungibleItemType<AccountId> {199 pub owner: Vec<Ownership<AccountId>>,200 pub const_data: Vec<u8>,201 pub variable_data: Vec<u8>,202}203204// #[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]205// #[cfg_attr(feature = "std", derive(Serialize, Deserialize))]206// pub struct VestingItem<AccountId, Moment> {207// pub sender: AccountId,208// pub recipient: AccountId,209// pub collection_id: CollectionId,210// pub item_id: TokenId,211// pub amount: u64,212// pub vesting_date: Moment,213// }214215#[derive(Encode, Decode, Debug, Clone, PartialEq)]216#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]217pub struct CollectionLimits {218 pub account_token_ownership_limit: u32,219 pub sponsored_data_size: u32,220 pub token_limit: u32,221222 // Timeouts for item types in passed blocks223 pub sponsor_transfer_timeout: u32,224 pub owner_can_transfer: bool,225 pub owner_can_destroy: bool,226}227228impl Default for CollectionLimits {229 fn default() -> CollectionLimits {230 CollectionLimits { 231 account_token_ownership_limit: 10_000_000, 232 token_limit: u32::max_value(),233 sponsored_data_size: u32::MAX,234 sponsor_transfer_timeout: 14400,235 owner_can_transfer: true,236 owner_can_destroy: true237 }238 }239}240241#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]242#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]243pub struct ChainLimits {244 pub collection_numbers_limit: u32,245 pub account_token_ownership_limit: u32,246 pub collections_admins_limit: u64,247 pub custom_data_limit: u32,248249 // Timeouts for item types in passed blocks250 pub nft_sponsor_transfer_timeout: u32,251 pub fungible_sponsor_transfer_timeout: u32,252 pub refungible_sponsor_transfer_timeout: u32,253254 // Schema limits255 pub offchain_schema_limit: u32,256 pub variable_on_chain_schema_limit: u32,257 pub const_on_chain_schema_limit: u32,258}259260pub trait WeightInfo {261 fn create_collection() -> Weight;262 fn destroy_collection() -> Weight;263 fn add_to_white_list() -> Weight;264 fn remove_from_white_list() -> Weight;265 fn set_public_access_mode() -> Weight;266 fn set_mint_permission() -> Weight;267 fn change_collection_owner() -> Weight;268 fn add_collection_admin() -> Weight;269 fn remove_collection_admin() -> Weight;270 fn set_collection_sponsor() -> Weight;271 fn confirm_sponsorship() -> Weight;272 fn remove_collection_sponsor() -> Weight;273 fn create_item(s: usize) -> Weight;274 fn burn_item() -> Weight;275 fn transfer() -> Weight;276 fn approve() -> Weight;277 fn transfer_from() -> Weight;278 fn set_offchain_schema() -> Weight;279 fn set_const_on_chain_schema() -> Weight;280 fn set_variable_on_chain_schema() -> Weight;281 fn set_variable_meta_data() -> Weight;282 fn enable_contract_sponsoring() -> Weight;283 fn set_schema_version() -> Weight;284 fn set_chain_limits() -> Weight;285 fn set_contract_sponsoring_rate_limit() -> Weight;286 fn toggle_contract_white_list() -> Weight;287 fn add_to_contract_white_list() -> Weight;288 fn remove_from_contract_white_list() -> Weight;289 fn set_collection_limits() -> Weight;290}291292#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]293#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]294pub struct CreateNftData {295 pub const_data: Vec<u8>,296 pub variable_data: Vec<u8>,297}298299#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]300#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]301pub struct CreateFungibleData {302 pub value: u128,303}304305#[derive(Encode, Decode, Default, Debug, Clone, PartialEq)]306#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]307pub struct CreateReFungibleData {308 pub const_data: Vec<u8>,309 pub variable_data: Vec<u8>,310 pub pieces: u128,311}312313#[derive(Encode, Decode, Debug, Clone, PartialEq)]314#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]315pub enum CreateItemData {316 NFT(CreateNftData),317 Fungible(CreateFungibleData),318 ReFungible(CreateReFungibleData),319}320321impl CreateItemData {322 pub fn len(&self) -> usize {323 let len = match self {324 CreateItemData::NFT(data) => data.variable_data.len() + data.const_data.len(),325 CreateItemData::ReFungible(data) => data.variable_data.len() + data.const_data.len(),326 _ => 0327 };328 329 return len;330 }331}332333impl From<CreateNftData> for CreateItemData {334 fn from(item: CreateNftData) -> Self {335 CreateItemData::NFT(item)336 }337}338339impl From<CreateReFungibleData> for CreateItemData {340 fn from(item: CreateReFungibleData) -> Self {341 CreateItemData::ReFungible(item)342 }343}344345impl From<CreateFungibleData> for CreateItemData {346 fn from(item: CreateFungibleData) -> Self {347 CreateItemData::Fungible(item)348 }349}350351352decl_error! {353 /// Error for non-fungible-token module.354 pub enum Error for Module<T: Config> {355 /// Total collections bound exceeded.356 TotalCollectionsLimitExceeded,357 /// Decimal_points parameter must be lower than MAX_DECIMAL_POINTS constant, currently it is 30.358 CollectionDecimalPointLimitExceeded, 359 /// Collection name can not be longer than 63 char.360 CollectionNameLimitExceeded, 361 /// Collection description can not be longer than 255 char.362 CollectionDescriptionLimitExceeded, 363 /// Token prefix can not be longer than 15 char.364 CollectionTokenPrefixLimitExceeded,365 /// This collection does not exist.366 CollectionNotFound,367 /// Item not exists.368 TokenNotFound,369 /// Admin not found370 AdminNotFound,371 /// Arithmetic calculation overflow.372 NumOverflow, 373 /// Account already has admin role.374 AlreadyAdmin, 375 /// You do not own this collection.376 NoPermission,377 /// This address is not set as sponsor, use setCollectionSponsor first.378 ConfirmUnsetSponsorFail,379 /// Collection is not in mint mode.380 PublicMintingNotAllowed,381 /// Sender parameter and item owner must be equal.382 MustBeTokenOwner,383 /// Item balance not enough.384 TokenValueTooLow,385 /// Size of item is too large.386 NftSizeLimitExceeded,387 /// No approve found388 ApproveNotFound,389 /// Requested value more than approved.390 TokenValueNotEnough,391 /// Only approved addresses can call this method.392 ApproveRequired,393 /// Address is not in white list.394 AddresNotInWhiteList,395 /// Number of collection admins bound exceeded.396 CollectionAdminsLimitExceeded,397 /// Owned tokens by a single address bound exceeded.398 AddressOwnershipLimitExceeded,399 /// Length of items properties must be greater than 0.400 EmptyArgument,401 /// const_data exceeded data limit.402 TokenConstDataLimitExceeded,403 /// variable_data exceeded data limit.404 TokenVariableDataLimitExceeded,405 /// Not NFT item data used to mint in NFT collection.406 NotNftDataUsedToMintNftCollectionToken,407 /// Not Fungible item data used to mint in Fungible collection.408 NotFungibleDataUsedToMintFungibleCollectionToken,409 /// Not Re Fungible item data used to mint in Re Fungible collection.410 NotReFungibleDataUsedToMintReFungibleCollectionToken,411 /// Unexpected collection type.412 UnexpectedCollectionType,413 /// Can't store metadata in fungible tokens.414 CantStoreMetadataInFungibleTokens,415 /// Collection token limit exceeded416 CollectionTokenLimitExceeded,417 /// Account token limit exceeded per collection418 AccountTokenLimitExceeded,419 /// Collection limit bounds per collection exceeded420 CollectionLimitBoundsExceeded,421 /// Tried to enable permissions which are only permitted to be disabled422 OwnerPermissionsCantBeReverted,423 /// Schema data size limit bound exceeded424 SchemaDataLimitExceeded,425 /// Maximum refungibility exceeded426 WrongRefungiblePieces,427 /// createRefungible should be called with one owner428 BadCreateRefungibleCall,429 }430}431432pub trait Config: system::Config + Sized + pallet_transaction_payment::Config + pallet_contracts::Config {433 type Event: From<Event<Self>> + Into<<Self as system::Config>::Event>;434435 /// Weight information for extrinsics in this pallet.436 type WeightInfo: WeightInfo;437438 type Currency: Currency<Self::AccountId>;439 type CollectionCreationPrice: Get<<<Self as Config>::Currency as Currency<Self::AccountId>>::Balance>;440 type TreasuryAccountId: Get<Self::AccountId>;441}442443#[cfg(feature = "runtime-benchmarks")]444mod benchmarking;445446// #endregion447448// # Used definitions449//450// ## User control levels451//452// chain-controlled - key is uncontrolled by user453// i.e autoincrementing index454// can use non-cryptographic hash455// real - key is controlled by user456// but it is hard to generate enough colliding values, i.e owner of signed txs457// can use non-cryptographic hash458// controlled - key is completly controlled by users459// i.e maps with mutable keys460// should use cryptographic hash461//462// ## User control level downgrade reasons463//464// ?1 - chain-controlled -> controlled465// collections/tokens can be destroyed, resulting in massive holes466// ?2 - chain-controlled -> controlled467// same as ?1, but can be only added, resulting in easier exploitation468// ?3 - real -> controlled469// no confirmation required, so addresses can be easily generated470decl_storage! {471 trait Store for Module<T: Config> as Nft {472473 //#region Private members474 /// Id of next collection475 CreatedCollectionCount: u32;476 /// Used for migrations477 ChainVersion: u64;478 /// Id of last collection token479 /// Collection id (controlled?1)480 ItemListIndex: map hasher(blake2_128_concat) CollectionId => TokenId;481 //#endregion482483 //#region Chain limits struct484 pub ChainLimit get(fn chain_limit) config(): ChainLimits;485 //#endregion486487 //#region Bound counters488 /// Amount of collections destroyed, used for total amount tracking with489 /// CreatedCollectionCount490 DestroyedCollectionCount: u32;491 /// Total amount of account owned tokens (NFTs + RFTs + unique fungibles)492 /// Account id (real)493 pub AccountItemCount get(fn account_item_count): map hasher(twox_64_concat) T::AccountId => u32;494 //#endregion495496 //#region Basic collections497 /// Collection info498 /// Collection id (controlled?1)499 pub Collection get(fn collection) config(): map hasher(blake2_128_concat) CollectionId => CollectionType<T::AccountId>;500 /// List of collection admins501 /// Collection id (controlled?2)502 pub AdminList get(fn admin_list_collection): map hasher(blake2_128_concat) CollectionId => Vec<T::AccountId>;503 /// Whitelisted collection users504 /// Collection id (controlled?2), user id (controlled?3)505 pub WhiteList get(fn white_list): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) T::AccountId => bool;506 //#endregion507508 /// How many of collection items user have509 /// Collection id (controlled?2), account id (real)510 pub Balance get(fn balance_count): double_map hasher(blake2_128_concat) CollectionId, hasher(twox_64_concat) T::AccountId => u128;511512 /// Amount of items which spender can transfer out of owners account (via transferFrom)513 /// Collection id (controlled?2), (token id (controlled ?2) + owner account id (real) + spender account id (controlled?3))514 pub Allowances get(fn approved): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) (TokenId, T::AccountId, T::AccountId) => u128;515516 //#region Item collections517 /// Collection id (controlled?2), token id (controlled?1)518 pub NftItemList get(fn nft_item_id) config(): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => NftItemType<T::AccountId>;519 /// Collection id (controlled?2), owner (controlled?2)520 pub FungibleItemList get(fn fungible_item_id) config(): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) T::AccountId => FungibleItemType;521 /// Collection id (controlled?2), token id (controlled?1)522 pub ReFungibleItemList get(fn refungible_item_id) config(): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => ReFungibleItemType<T::AccountId>;523 //#endregion524525 //#region Index list526 /// Collection id (controlled?2), tokens owner (controlled?2)527 pub AddressTokens get(fn address_tokens): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) T::AccountId => Vec<TokenId>;528 //#endregion529530 //#region Tokens transfer rate limit baskets531 /// (Collection id (controlled?2), who created (real))532 pub CreateItemBasket get(fn create_item_basket): map hasher(blake2_128_concat) (CollectionId, T::AccountId) => T::BlockNumber;533 /// Collection id (controlled?2), token id (controlled?2)534 pub NftTransferBasket get(fn nft_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => T::BlockNumber;535 /// Collection id (controlled?2), owning user (real)536 pub FungibleTransferBasket get(fn fungible_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(twox_64_concat) T::AccountId => T::BlockNumber;537 /// Collection id (controlled?2), token id (controlled?2)538 pub ReFungibleTransferBasket get(fn refungible_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => T::BlockNumber;539 //#endregion540541 //#region Contract Sponsorship and Ownership542 /// Contract address (real)543 pub ContractOwner get(fn contract_owner): map hasher(twox_64_concat) T::AccountId => T::AccountId;544 /// Contract address (real)545 pub ContractSelfSponsoring get(fn contract_self_sponsoring): map hasher(twox_64_concat) T::AccountId => bool;546 /// (Contract address(real), caller (real))547 pub ContractSponsorBasket get(fn contract_sponsor_basket): map hasher(twox_64_concat) (T::AccountId, T::AccountId) => T::BlockNumber;548 /// Contract address (real)549 pub ContractSponsoringRateLimit get(fn contract_sponsoring_rate_limit): map hasher(twox_64_concat) T::AccountId => T::BlockNumber;550 /// Contract address (real)551 pub ContractWhiteListEnabled get(fn contract_white_list_enabled): map hasher(twox_64_concat) T::AccountId => bool; 552 /// Contract address (real) => Whitelisted user (controlled?3)553 pub ContractWhiteList get(fn contract_white_list): double_map hasher(twox_64_concat) T::AccountId, hasher(blake2_128_concat) T::AccountId => bool; 554 //#endregion555 }556 add_extra_genesis {557 build(|config: &GenesisConfig<T>| {558 // Modification of storage559 for (_num, _c) in &config.collection {560 <Module<T>>::init_collection(_c);561 }562563 for (_num, _c, _i) in &config.nft_item_id {564 <Module<T>>::init_nft_token(*_c, _i);565 }566567 for (collection_id, account_id, fungible_item) in &config.fungible_item_id {568 <Module<T>>::init_fungible_token(*collection_id, account_id, fungible_item);569 }570571 for (_num, _c, _i) in &config.refungible_item_id {572 <Module<T>>::init_refungible_token(*_c, _i);573 }574 })575 }576}577578decl_event!(579 pub enum Event<T>580 where581 AccountId = <T as system::Config>::AccountId,582 {583 /// New collection was created584 /// 585 /// # Arguments586 /// 587 /// * collection_id: Globally unique identifier of newly created collection.588 /// 589 /// * mode: [CollectionMode] converted into u8.590 /// 591 /// * account_id: Collection owner.592 Created(CollectionId, u8, AccountId),593594 /// New item was created.595 /// 596 /// # Arguments597 /// 598 /// * collection_id: Id of the collection where item was created.599 /// 600 /// * item_id: Id of an item. Unique within the collection.601 ///602 /// * recipient: Owner of newly created item 603 ItemCreated(CollectionId, TokenId, AccountId),604605 /// Collection item was burned.606 /// 607 /// # Arguments608 /// 609 /// collection_id.610 /// 611 /// item_id: Identifier of burned NFT.612 ItemDestroyed(CollectionId, TokenId),613614 /// Item was transferred615 ///616 /// * collection_id: Id of collection to which item is belong617 ///618 /// * item_id: Id of an item619 ///620 /// * sender: Original owner of item621 ///622 /// * recipient: New owner of item623 ///624 /// * amount: Always 1 for NFT625 Transfer(CollectionId, TokenId, AccountId, AccountId, u128),626 }627);628629decl_module! {630 pub struct Module<T: Config> for enum Call 631 where 632 origin: T::Origin633 {634 fn deposit_event() = default;635 type Error = Error<T>;636637 fn on_initialize(now: T::BlockNumber) -> Weight {638 0639 }640641 /// 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.642 /// 643 /// # Permissions644 /// 645 /// * Anyone.646 /// 647 /// # Arguments648 /// 649 /// * collection_name: UTF-16 string with collection name (limit 64 characters), will be stored as zero-terminated.650 /// 651 /// * collection_description: UTF-16 string with collection description (limit 256 characters), will be stored as zero-terminated.652 /// 653 /// * token_prefix: UTF-8 string with token prefix.654 /// 655 /// * mode: [CollectionMode] collection type and type dependent data.656 // returns collection ID657 #[weight = <T as Config>::WeightInfo::create_collection()]658 #[transactional]659 pub fn create_collection(origin,660 collection_name: Vec<u16>,661 collection_description: Vec<u16>,662 token_prefix: Vec<u8>,663 mode: CollectionMode) -> DispatchResult {664665 // Anyone can create a collection666 let who = ensure_signed(origin)?;667668 let mut imbalance = <<<T as Config>::Currency as Currency<T::AccountId>>::PositiveImbalance>::zero();669 imbalance.subsume(<<T as Config>::Currency as Currency<T::AccountId>>::deposit_creating(670 &T::TreasuryAccountId::get(),671 T::CollectionCreationPrice::get(),672 ));673 <T as Config>::Currency::settle(674 &who,675 imbalance,676 WithdrawReasons::TRANSFER,677 ExistenceRequirement::KeepAlive,678 ).map_err(|_| Error::<T>::NoPermission)?;679680 let decimal_points = match mode {681 CollectionMode::Fungible(points) => points,682 _ => 0683 };684685 let chain_limit = ChainLimit::get();686687 let created_count = CreatedCollectionCount::get();688 let destroyed_count = DestroyedCollectionCount::get();689690 // bound Total number of collections691 ensure!(created_count - destroyed_count < chain_limit.collection_numbers_limit, Error::<T>::TotalCollectionsLimitExceeded);692693 // check params694 ensure!(decimal_points <= MAX_DECIMAL_POINTS, Error::<T>::CollectionDecimalPointLimitExceeded);695 ensure!(collection_name.len() <= 64, Error::<T>::CollectionNameLimitExceeded);696 ensure!(collection_description.len() <= 256, Error::<T>::CollectionDescriptionLimitExceeded);697 ensure!(token_prefix.len() <= 16, Error::<T>::CollectionTokenPrefixLimitExceeded);698699 // Generate next collection ID700 let next_id = created_count701 .checked_add(1)702 .ok_or(Error::<T>::NumOverflow)?;703704 CreatedCollectionCount::put(next_id);705706 let limits = CollectionLimits {707 sponsored_data_size: chain_limit.custom_data_limit,708 ..Default::default()709 };710711 // Create new collection712 let new_collection = CollectionType {713 owner: who.clone(),714 name: collection_name,715 mode: mode.clone(),716 mint_mode: false,717 access: AccessMode::Normal,718 description: collection_description,719 decimal_points: decimal_points,720 token_prefix: token_prefix,721 offchain_schema: Vec::new(),722 schema_version: SchemaVersion::ImageURL,723 sponsorship: SponsorshipState::Disabled,724 variable_on_chain_schema: Vec::new(),725 const_on_chain_schema: Vec::new(),726 limits,727 };728729 // Add new collection to map730 <Collection<T>>::insert(next_id, new_collection);731732 // call event733 Self::deposit_event(RawEvent::Created(next_id, mode.into(), who.clone()));734735 Ok(())736 }737738 /// **DANGEROUS**: Destroys collection and all NFTs within this collection. Users irrecoverably lose their assets and may lose real money.739 /// 740 /// # Permissions741 /// 742 /// * Collection Owner.743 /// 744 /// # Arguments745 /// 746 /// * collection_id: collection to destroy.747 #[weight = <T as Config>::WeightInfo::destroy_collection()]748 #[transactional]749 pub fn destroy_collection(origin, collection_id: CollectionId) -> DispatchResult {750751 let sender = ensure_signed(origin)?;752 Self::check_owner_permissions(collection_id, sender)?;753754 let target_collection = <Collection<T>>::get(collection_id);755 if !target_collection.limits.owner_can_destroy {756 fail!(Error::<T>::NoPermission);757 }758759 <AddressTokens<T>>::remove_prefix(collection_id);760 <Allowances<T>>::remove_prefix(collection_id);761 <Balance<T>>::remove_prefix(collection_id);762 <ItemListIndex>::remove(collection_id);763 <AdminList<T>>::remove(collection_id);764 <Collection<T>>::remove(collection_id);765 <WhiteList<T>>::remove_prefix(collection_id);766767 <NftItemList<T>>::remove_prefix(collection_id);768 <FungibleItemList<T>>::remove_prefix(collection_id);769 <ReFungibleItemList<T>>::remove_prefix(collection_id);770771 <NftTransferBasket<T>>::remove_prefix(collection_id);772 <FungibleTransferBasket<T>>::remove_prefix(collection_id);773 <ReFungibleTransferBasket<T>>::remove_prefix(collection_id);774775 DestroyedCollectionCount::put(DestroyedCollectionCount::get()776 .checked_add(1)777 .ok_or(Error::<T>::NumOverflow)?);778779 Ok(())780 }781782 /// Add an address to white list.783 /// 784 /// # Permissions785 /// 786 /// * Collection Owner787 /// * Collection Admin788 /// 789 /// # Arguments790 /// 791 /// * collection_id.792 /// 793 /// * address.794 #[weight = <T as Config>::WeightInfo::add_to_white_list()]795 #[transactional]796 pub fn add_to_white_list(origin, collection_id: CollectionId, address: T::AccountId) -> DispatchResult{797798 let sender = ensure_signed(origin)?;799 Self::check_owner_or_admin_permissions(collection_id, sender)?;800801 <WhiteList<T>>::insert(collection_id, address, true);802 803 Ok(())804 }805806 /// Remove an address from white list.807 /// 808 /// # Permissions809 /// 810 /// * Collection Owner811 /// * Collection Admin812 /// 813 /// # Arguments814 /// 815 /// * collection_id.816 /// 817 /// * address.818 #[weight = <T as Config>::WeightInfo::remove_from_white_list()]819 #[transactional]820 pub fn remove_from_white_list(origin, collection_id: CollectionId, address: T::AccountId) -> DispatchResult{821822 let sender = ensure_signed(origin)?;823 Self::check_owner_or_admin_permissions(collection_id, sender)?;824825 <WhiteList<T>>::remove(collection_id, address);826827 Ok(())828 }829830 /// Toggle between normal and white list access for the methods with access for `Anyone`.831 /// 832 /// # Permissions833 /// 834 /// * Collection Owner.835 /// 836 /// # Arguments837 /// 838 /// * collection_id.839 /// 840 /// * mode: [AccessMode]841 #[weight = <T as Config>::WeightInfo::set_public_access_mode()]842 #[transactional]843 pub fn set_public_access_mode(origin, collection_id: CollectionId, mode: AccessMode) -> DispatchResult844 {845 let sender = ensure_signed(origin)?;846847 Self::check_owner_permissions(collection_id, sender)?;848 let mut target_collection = <Collection<T>>::get(collection_id);849 target_collection.access = mode;850 <Collection<T>>::insert(collection_id, target_collection);851852 Ok(())853 }854855 /// Allows Anyone to create tokens if:856 /// * White List is enabled, and857 /// * Address is added to white list, and858 /// * This method was called with True parameter859 /// 860 /// # Permissions861 /// * Collection Owner862 ///863 /// # Arguments864 /// 865 /// * collection_id.866 /// 867 /// * mint_permission: Boolean parameter. If True, allows minting to Anyone with conditions above.868 #[weight = <T as Config>::WeightInfo::set_mint_permission()]869 #[transactional]870 pub fn set_mint_permission(origin, collection_id: CollectionId, mint_permission: bool) -> DispatchResult871 {872 let sender = ensure_signed(origin)?;873874 Self::check_owner_permissions(collection_id, sender)?;875 let mut target_collection = <Collection<T>>::get(collection_id);876 target_collection.mint_mode = mint_permission;877 <Collection<T>>::insert(collection_id, target_collection);878879 Ok(())880 }881882 /// Change the owner of the collection.883 /// 884 /// # Permissions885 /// 886 /// * Collection Owner.887 /// 888 /// # Arguments889 /// 890 /// * collection_id.891 /// 892 /// * new_owner.893 #[weight = <T as Config>::WeightInfo::change_collection_owner()]894 #[transactional]895 pub fn change_collection_owner(origin, collection_id: CollectionId, new_owner: T::AccountId) -> DispatchResult {896897 let sender = ensure_signed(origin)?;898 Self::check_owner_permissions(collection_id, sender)?;899 let mut target_collection = <Collection<T>>::get(collection_id);900 target_collection.owner = new_owner;901 <Collection<T>>::insert(collection_id, target_collection);902903 Ok(())904 }905906 /// Adds an admin of the Collection.907 /// 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. 908 /// 909 /// # Permissions910 /// 911 /// * Collection Owner.912 /// * Collection Admin.913 /// 914 /// # Arguments915 /// 916 /// * collection_id: ID of the Collection to add admin for.917 /// 918 /// * new_admin_id: Address of new admin to add.919 #[weight = <T as Config>::WeightInfo::add_collection_admin()]920 #[transactional]921 pub fn add_collection_admin(origin, collection_id: CollectionId, new_admin_id: T::AccountId) -> DispatchResult {922923 let sender = ensure_signed(origin)?;924 Self::check_owner_or_admin_permissions(collection_id, sender)?;925 let mut admin_arr: Vec<T::AccountId> = Vec::new();926927 if <AdminList<T>>::contains_key(collection_id)928 {929 admin_arr = <AdminList<T>>::get(collection_id);930 ensure!(!admin_arr.contains(&new_admin_id), Error::<T>::AlreadyAdmin);931 }932933 // Number of collection admins934 ensure!((admin_arr.len() as u64) < ChainLimit::get().collections_admins_limit, Error::<T>::CollectionAdminsLimitExceeded);935936 admin_arr.push(new_admin_id);937 <AdminList<T>>::insert(collection_id, admin_arr);938939 Ok(())940 }941942 /// 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.943 ///944 /// # Permissions945 /// 946 /// * Collection Owner.947 /// * Collection Admin.948 /// 949 /// # Arguments950 /// 951 /// * collection_id: ID of the Collection to remove admin for.952 /// 953 /// * account_id: Address of admin to remove.954 #[weight = <T as Config>::WeightInfo::remove_collection_admin()]955 #[transactional]956 pub fn remove_collection_admin(origin, collection_id: CollectionId, account_id: T::AccountId) -> DispatchResult {957958 let sender = ensure_signed(origin)?;959 Self::check_owner_or_admin_permissions(collection_id, sender)?;960 ensure!(<AdminList<T>>::contains_key(collection_id), Error::<T>::AdminNotFound);961962 let mut admin_arr = <AdminList<T>>::get(collection_id);963 admin_arr.retain(|i| *i != account_id);964 <AdminList<T>>::insert(collection_id, admin_arr);965966 Ok(())967 }968969 /// # Permissions970 /// 971 /// * Collection Owner972 /// 973 /// # Arguments974 /// 975 /// * collection_id.976 /// 977 /// * new_sponsor.978 #[weight = <T as Config>::WeightInfo::set_collection_sponsor()]979 #[transactional]980 pub fn set_collection_sponsor(origin, collection_id: CollectionId, new_sponsor: T::AccountId) -> DispatchResult {981982 let sender = ensure_signed(origin)?;983 ensure!(<Collection<T>>::contains_key(collection_id), Error::<T>::CollectionNotFound);984985 let mut target_collection = <Collection<T>>::get(collection_id);986 ensure!(sender == target_collection.owner, Error::<T>::NoPermission);987988 target_collection.sponsorship = SponsorshipState::Unconfirmed(new_sponsor);989 <Collection<T>>::insert(collection_id, target_collection);990991 Ok(())992 }993994 /// # Permissions995 /// 996 /// * Sponsor.997 /// 998 /// # Arguments999 /// 1000 /// * collection_id.1001 #[weight = <T as Config>::WeightInfo::confirm_sponsorship()]1002 #[transactional]1003 pub fn confirm_sponsorship(origin, collection_id: CollectionId) -> DispatchResult {10041005 let sender = ensure_signed(origin)?;1006 ensure!(<Collection<T>>::contains_key(collection_id), Error::<T>::CollectionNotFound);10071008 let mut target_collection = <Collection<T>>::get(collection_id);1009 ensure!(1010 target_collection.sponsorship.pending_sponsor() == Some(&sender),1011 Error::<T>::ConfirmUnsetSponsorFail1012 );10131014 target_collection.sponsorship = SponsorshipState::Confirmed(sender);1015 <Collection<T>>::insert(collection_id, target_collection);10161017 Ok(())1018 }10191020 /// Switch back to pay-per-own-transaction model.1021 ///1022 /// # Permissions1023 ///1024 /// * Collection owner.1025 /// 1026 /// # Arguments1027 /// 1028 /// * collection_id.1029 #[weight = <T as Config>::WeightInfo::remove_collection_sponsor()]1030 #[transactional]1031 pub fn remove_collection_sponsor(origin, collection_id: CollectionId) -> DispatchResult {10321033 let sender = ensure_signed(origin)?;1034 ensure!(<Collection<T>>::contains_key(collection_id), Error::<T>::CollectionNotFound);10351036 let mut target_collection = <Collection<T>>::get(collection_id);1037 ensure!(sender == target_collection.owner, Error::<T>::NoPermission);10381039 target_collection.sponsorship = SponsorshipState::Disabled;1040 <Collection<T>>::insert(collection_id, target_collection);10411042 Ok(())1043 }10441045 /// This method creates a concrete instance of NFT Collection created with CreateCollection method.1046 /// 1047 /// # Permissions1048 /// 1049 /// * Collection Owner.1050 /// * Collection Admin.1051 /// * Anyone if1052 /// * White List is enabled, and1053 /// * Address is added to white list, and1054 /// * MintPermission is enabled (see SetMintPermission method)1055 /// 1056 /// # Arguments1057 /// 1058 /// * collection_id: ID of the collection.1059 /// 1060 /// * owner: Address, initial owner of the NFT.1061 ///1062 /// * data: Token data to store on chain.1063 // #[weight =1064 // (130_000_000 as Weight)1065 // .saturating_add((2135 as Weight).saturating_mul((properties.len() as u64) as Weight))1066 // .saturating_add(RocksDbWeight::get().reads(10 as Weight))1067 // .saturating_add(RocksDbWeight::get().writes(8 as Weight))]10681069 #[weight = <T as Config>::WeightInfo::create_item(data.len())]1070 #[transactional]1071 pub fn create_item(origin, collection_id: CollectionId, owner: T::AccountId, data: CreateItemData) -> DispatchResult {10721073 let sender = ensure_signed(origin)?;10741075 Self::collection_exists(collection_id)?;10761077 let target_collection = <Collection<T>>::get(collection_id);10781079 Self::can_create_items_in_collection(collection_id, &target_collection, &sender, &owner)?;1080 Self::validate_create_item_args(&target_collection, &data)?;1081 Self::create_item_no_validation(collection_id, owner, data)?;10821083 Ok(())1084 }10851086 /// This method creates multiple items in a collection created with CreateCollection method.1087 /// 1088 /// # Permissions1089 /// 1090 /// * Collection Owner.1091 /// * Collection Admin.1092 /// * Anyone if1093 /// * White List is enabled, and1094 /// * Address is added to white list, and1095 /// * MintPermission is enabled (see SetMintPermission method)1096 /// 1097 /// # Arguments1098 /// 1099 /// * collection_id: ID of the collection.1100 /// 1101 /// * itemsData: Array items properties. Each property is an array of bytes itself, see [create_item].1102 /// 1103 /// * owner: Address, initial owner of the NFT.1104 #[weight = <T as Config>::WeightInfo::create_item(items_data.into_iter()1105 .map(|data| { data.len() })1106 .sum())]1107 #[transactional]1108 pub fn create_multiple_items(origin, collection_id: CollectionId, owner: T::AccountId, items_data: Vec<CreateItemData>) -> DispatchResult {11091110 ensure!(items_data.len() > 0, Error::<T>::EmptyArgument);1111 let sender = ensure_signed(origin)?;11121113 Self::collection_exists(collection_id)?;1114 let target_collection = <Collection<T>>::get(collection_id);11151116 Self::can_create_items_in_collection(collection_id, &target_collection, &sender, &owner)?;11171118 for data in &items_data {1119 Self::validate_create_item_args(&target_collection, data)?;1120 }1121 for data in &items_data {1122 Self::create_item_no_validation(collection_id, owner.clone(), data.clone())?;1123 }11241125 Ok(())1126 }11271128 /// Destroys a concrete instance of NFT.1129 /// 1130 /// # Permissions1131 /// 1132 /// * Collection Owner.1133 /// * Collection Admin.1134 /// * Current NFT Owner.1135 /// 1136 /// # Arguments1137 /// 1138 /// * collection_id: ID of the collection.1139 /// 1140 /// * item_id: ID of NFT to burn.1141 #[weight = <T as Config>::WeightInfo::burn_item()]1142 #[transactional]1143 pub fn burn_item(origin, collection_id: CollectionId, item_id: TokenId, value: u128) -> DispatchResult {11441145 let sender = ensure_signed(origin)?;1146 Self::collection_exists(collection_id)?;11471148 // Transfer permissions check1149 let target_collection = <Collection<T>>::get(collection_id);1150 ensure!(1151 Self::is_item_owner(sender.clone(), collection_id, item_id) ||1152 (1153 target_collection.limits.owner_can_transfer &&1154 Self::is_owner_or_admin_permissions(collection_id, sender.clone())1155 ),1156 Error::<T>::NoPermission1157 );11581159 if target_collection.access == AccessMode::WhiteList {1160 Self::check_white_list(collection_id, &sender)?;1161 }11621163 match target_collection.mode1164 {1165 CollectionMode::NFT => Self::burn_nft_item(collection_id, item_id)?,1166 CollectionMode::Fungible(_) => Self::burn_fungible_item(&sender, collection_id, value)?,1167 CollectionMode::ReFungible => Self::burn_refungible_item(collection_id, item_id, &sender)?,1168 _ => ()1169 };11701171 // call event1172 Self::deposit_event(RawEvent::ItemDestroyed(collection_id, item_id));11731174 Ok(())1175 }11761177 /// Change ownership of the token.1178 /// 1179 /// # Permissions1180 /// 1181 /// * Collection Owner1182 /// * Collection Admin1183 /// * Current NFT owner1184 ///1185 /// # Arguments1186 /// 1187 /// * recipient: Address of token recipient.1188 /// 1189 /// * collection_id.1190 /// 1191 /// * item_id: ID of the item1192 /// * Non-Fungible Mode: Required.1193 /// * Fungible Mode: Ignored.1194 /// * Re-Fungible Mode: Required.1195 /// 1196 /// * value: Amount to transfer.1197 /// * Non-Fungible Mode: Ignored1198 /// * Fungible Mode: Must specify transferred amount1199 /// * Re-Fungible Mode: Must specify transferred portion (between 0 and 1)1200 #[weight = <T as Config>::WeightInfo::transfer()]1201 #[transactional]1202 pub fn transfer(origin, recipient: T::AccountId, collection_id: CollectionId, item_id: TokenId, value: u128) -> DispatchResult {1203 let sender = ensure_signed(origin)?;1204 Self::transfer_internal(sender, recipient, collection_id, item_id, value)1205 }12061207 /// Set, change, or remove approved address to transfer the ownership of the NFT.1208 /// 1209 /// # Permissions1210 /// 1211 /// * Collection Owner1212 /// * Collection Admin1213 /// * Current NFT owner1214 /// 1215 /// # Arguments1216 /// 1217 /// * approved: Address that is approved to transfer this NFT or zero (if needed to remove approval).1218 /// 1219 /// * collection_id.1220 /// 1221 /// * item_id: ID of the item.1222 #[weight = <T as Config>::WeightInfo::approve()]1223 #[transactional]1224 pub fn approve(origin, spender: T::AccountId, collection_id: CollectionId, item_id: TokenId, amount: u128) -> DispatchResult {12251226 let sender = ensure_signed(origin)?;12271228 Self::collection_exists(collection_id)?;1229 Self::token_exists(collection_id, item_id, &sender)?;12301231 // Transfer permissions check1232 let target_collection = <Collection<T>>::get(collection_id);1233 let allowance_limit = if target_collection.limits.owner_can_transfer &&1234 Self::is_owner_or_admin_permissions(1235 collection_id,1236 sender.clone(),1237 ) {1238 None1239 } else if let Some(amount) = Self::owned_amount(1240 sender.clone(),1241 collection_id,1242 item_id,1243 ) {1244 Some(amount)1245 } else {1246 fail!(Error::<T>::NoPermission);1247 };12481249 if target_collection.access == AccessMode::WhiteList {1250 Self::check_white_list(collection_id, &sender)?;1251 Self::check_white_list(collection_id, &spender)?;1252 }12531254 let allowance_exists = <Allowances<T>>::contains_key(collection_id, (item_id, &sender, &spender));1255 let mut allowance: u128 = amount;1256 if allowance_exists {1257 allowance += <Allowances<T>>::get(collection_id, (item_id, &sender, &spender));1258 }1259 if let Some(limit) = allowance_limit {1260 ensure!(limit >= allowance, Error::<T>::TokenValueTooLow);1261 }1262 <Allowances<T>>::insert(collection_id, (item_id, sender.clone(), spender.clone()), allowance);12631264 Ok(())1265 }1266 1267 /// 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.1268 /// 1269 /// # Permissions1270 /// * Collection Owner1271 /// * Collection Admin1272 /// * Current NFT owner1273 /// * Address approved by current NFT owner1274 /// 1275 /// # Arguments1276 /// 1277 /// * from: Address that owns token.1278 /// 1279 /// * recipient: Address of token recipient.1280 /// 1281 /// * collection_id.1282 /// 1283 /// * item_id: ID of the item.1284 /// 1285 /// * value: Amount to transfer.1286 #[weight = <T as Config>::WeightInfo::transfer_from()]1287 #[transactional]1288 pub fn transfer_from(origin, from: T::AccountId, recipient: T::AccountId, collection_id: CollectionId, item_id: TokenId, value: u128 ) -> DispatchResult {12891290 let sender = ensure_signed(origin)?;1291 let mut appoved_transfer = false;12921293 // Check approval1294 let mut approval: u128 = 0;1295 if <Allowances<T>>::contains_key(collection_id, (item_id, &from, &sender)) {1296 approval = <Allowances<T>>::get(collection_id, (item_id, &from, &sender));1297 ensure!(approval >= value, Error::<T>::TokenValueNotEnough);1298 appoved_transfer = true;1299 }13001301 let target_collection = <Collection<T>>::get(collection_id);13021303 // Limits check1304 Self::is_correct_transfer(collection_id, &target_collection, &recipient)?;13051306 // Transfer permissions check 1307 ensure!(1308 appoved_transfer || 1309 (1310 target_collection.limits.owner_can_transfer &&1311 Self::is_owner_or_admin_permissions(collection_id, sender.clone())1312 ),1313 Error::<T>::NoPermission1314 );13151316 if target_collection.access == AccessMode::WhiteList {1317 Self::check_white_list(collection_id, &sender)?;1318 Self::check_white_list(collection_id, &recipient)?;1319 }13201321 // Reduce approval by transferred amount or remove if remaining approval drops to 01322 if approval.saturating_sub(value) > 0 {1323 <Allowances<T>>::insert(collection_id, (item_id, &from, &sender), approval - value);1324 }1325 else {1326 <Allowances<T>>::remove(collection_id, (item_id, &from, &sender));1327 }13281329 match target_collection.mode1330 {1331 CollectionMode::NFT => Self::transfer_nft(collection_id, item_id, from, recipient)?,1332 CollectionMode::Fungible(_) => Self::transfer_fungible(collection_id, value, &from, &recipient)?,1333 CollectionMode::ReFungible => Self::transfer_refungible(collection_id, item_id, value, from.clone(), recipient)?,1334 _ => ()1335 };13361337 Ok(())1338 }13391340 // #[weight = 0]1341 // pub fn safe_transfer_from(origin, collection_id: CollectionId, item_id: TokenId, new_owner: T::AccountId) -> DispatchResult {13421343 // // let no_perm_mes = "You do not have permissions to modify this collection";1344 // // ensure!(<ApprovedList<T>>::contains_key((collection_id, item_id)), no_perm_mes);1345 // // let list_itm = <ApprovedList<T>>::get((collection_id, item_id));1346 // // ensure!(list_itm.contains(&new_owner.clone()), no_perm_mes);13471348 // // // on_nft_received call13491350 // // Self::transfer(origin, collection_id, item_id, new_owner)?;13511352 // Ok(())1353 // }13541355 /// Set off-chain data schema.1356 /// 1357 /// # Permissions1358 /// 1359 /// * Collection Owner1360 /// * Collection Admin1361 /// 1362 /// # Arguments1363 /// 1364 /// * collection_id.1365 /// 1366 /// * schema: String representing the offchain data schema.1367 #[weight = <T as Config>::WeightInfo::set_variable_meta_data()]1368 #[transactional]1369 pub fn set_variable_meta_data (1370 origin,1371 collection_id: CollectionId,1372 item_id: TokenId,1373 data: Vec<u8>1374 ) -> DispatchResult {1375 let sender = ensure_signed(origin)?;1376 1377 Self::collection_exists(collection_id)?;1378 Self::token_exists(collection_id, item_id, &sender)?;13791380 ensure!(ChainLimit::get().custom_data_limit >= data.len() as u32, Error::<T>::TokenVariableDataLimitExceeded);13811382 // Modify permissions check1383 let target_collection = <Collection<T>>::get(collection_id);1384 ensure!(Self::is_item_owner(sender.clone(), collection_id, item_id) ||1385 Self::is_owner_or_admin_permissions(collection_id, sender.clone()),1386 Error::<T>::NoPermission);13871388 match target_collection.mode1389 {1390 CollectionMode::NFT => Self::set_nft_variable_data(collection_id, item_id, data)?,1391 CollectionMode::ReFungible => Self::set_re_fungible_variable_data(collection_id, item_id, data)?,1392 CollectionMode::Fungible(_) => fail!(Error::<T>::CantStoreMetadataInFungibleTokens),1393 _ => fail!(Error::<T>::UnexpectedCollectionType)1394 };13951396 Ok(())1397 }1398 1399 /// Set schema standard1400 /// ImageURL1401 /// Unique1402 /// 1403 /// # Permissions1404 /// 1405 /// * Collection Owner1406 /// * Collection Admin1407 /// 1408 /// # Arguments1409 /// 1410 /// * collection_id.1411 /// 1412 /// * schema: SchemaVersion: enum1413 #[weight = <T as Config>::WeightInfo::set_schema_version()]1414 #[transactional]1415 pub fn set_schema_version(1416 origin,1417 collection_id: CollectionId,1418 version: SchemaVersion1419 ) -> DispatchResult {1420 let sender = ensure_signed(origin)?;1421 Self::check_owner_or_admin_permissions(collection_id, sender.clone())?;1422 let mut target_collection = <Collection<T>>::get(collection_id);1423 target_collection.schema_version = version;1424 <Collection<T>>::insert(collection_id, target_collection);14251426 Ok(())1427 }14281429 /// Set off-chain data schema.1430 /// 1431 /// # Permissions1432 /// 1433 /// * Collection Owner1434 /// * Collection Admin1435 /// 1436 /// # Arguments1437 /// 1438 /// * collection_id.1439 /// 1440 /// * schema: String representing the offchain data schema.1441 #[weight = <T as Config>::WeightInfo::set_offchain_schema()]1442 #[transactional]1443 pub fn set_offchain_schema(1444 origin,1445 collection_id: CollectionId,1446 schema: Vec<u8>1447 ) -> DispatchResult {1448 let sender = ensure_signed(origin)?;1449 Self::check_owner_or_admin_permissions(collection_id, sender.clone())?;14501451 // check schema limit1452 ensure!(schema.len() as u32 <= ChainLimit::get().offchain_schema_limit, "");14531454 let mut target_collection = <Collection<T>>::get(collection_id);1455 target_collection.offchain_schema = schema;1456 <Collection<T>>::insert(collection_id, target_collection);14571458 Ok(())1459 }14601461 /// Set const on-chain data schema.1462 /// 1463 /// # Permissions1464 /// 1465 /// * Collection Owner1466 /// * Collection Admin1467 /// 1468 /// # Arguments1469 /// 1470 /// * collection_id.1471 /// 1472 /// * schema: String representing the const on-chain data schema.1473 #[weight = <T as Config>::WeightInfo::set_const_on_chain_schema()]1474 #[transactional]1475 pub fn set_const_on_chain_schema (1476 origin,1477 collection_id: CollectionId,1478 schema: Vec<u8>1479 ) -> DispatchResult {1480 let sender = ensure_signed(origin)?;1481 Self::check_owner_or_admin_permissions(collection_id, sender.clone())?;14821483 // check schema limit1484 ensure!(schema.len() as u32 <= ChainLimit::get().const_on_chain_schema_limit, "");14851486 let mut target_collection = <Collection<T>>::get(collection_id);1487 target_collection.const_on_chain_schema = schema;1488 <Collection<T>>::insert(collection_id, target_collection);14891490 Ok(())1491 }14921493 /// Set variable on-chain data schema.1494 /// 1495 /// # Permissions1496 /// 1497 /// * Collection Owner1498 /// * Collection Admin1499 /// 1500 /// # Arguments1501 /// 1502 /// * collection_id.1503 /// 1504 /// * schema: String representing the variable on-chain data schema.1505 #[weight = <T as Config>::WeightInfo::set_const_on_chain_schema()]1506 #[transactional]1507 pub fn set_variable_on_chain_schema (1508 origin,1509 collection_id: CollectionId,1510 schema: Vec<u8>1511 ) -> DispatchResult {1512 let sender = ensure_signed(origin)?;1513 Self::check_owner_or_admin_permissions(collection_id, sender.clone())?;15141515 // check schema limit1516 ensure!(schema.len() as u32 <= ChainLimit::get().variable_on_chain_schema_limit, "");15171518 let mut target_collection = <Collection<T>>::get(collection_id);1519 target_collection.variable_on_chain_schema = schema;1520 <Collection<T>>::insert(collection_id, target_collection);15211522 Ok(())1523 }15241525 // Sudo permissions function1526 #[weight = <T as Config>::WeightInfo::set_chain_limits()]1527 #[transactional]1528 pub fn set_chain_limits(1529 origin,1530 limits: ChainLimits1531 ) -> DispatchResult {15321533 #[cfg(not(feature = "runtime-benchmarks"))]1534 ensure_root(origin)?;15351536 <ChainLimit>::put(limits);1537 Ok(())1538 }15391540 /// Enable smart contract self-sponsoring.1541 /// 1542 /// # Permissions1543 /// 1544 /// * Contract Owner1545 /// 1546 /// # Arguments1547 /// 1548 /// * contract address1549 /// * enable flag1550 /// 1551 #[weight = <T as Config>::WeightInfo::enable_contract_sponsoring()]1552 #[transactional]1553 pub fn enable_contract_sponsoring(1554 origin,1555 contract_address: T::AccountId,1556 enable: bool1557 ) -> DispatchResult {15581559 let sender = ensure_signed(origin)?;15601561 #[cfg(feature = "runtime-benchmarks")]1562 <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());15631564 Self::ensure_contract_owned(sender, &contract_address)?;15651566 <ContractSelfSponsoring<T>>::insert(contract_address, enable);1567 Ok(())1568 }15691570 /// Set the rate limit for contract sponsoring to specified number of blocks.1571 /// 1572 /// If not set (has the default value of 0 blocks), the sponsoring will be disabled. 1573 /// If set to the number B (for blocks), the transactions will be sponsored with a rate 1574 /// limit of B, i.e. fees for every transaction sent to this smart contract will be paid 1575 /// from contract endowment if there are at least B blocks between such transactions. 1576 /// Nonetheless, if transactions are sent more frequently, the fees are paid by the sender.1577 /// 1578 /// # Permissions1579 /// 1580 /// * Contract Owner1581 /// 1582 /// # Arguments1583 /// 1584 /// -`contract_address`: Address of the contract to sponsor1585 /// -`rate_limit`: Number of blocks to wait until the next sponsored transaction is allowed1586 /// 1587 #[weight = <T as Config>::WeightInfo::set_contract_sponsoring_rate_limit()]1588 #[transactional]1589 pub fn set_contract_sponsoring_rate_limit(1590 origin,1591 contract_address: T::AccountId,1592 rate_limit: T::BlockNumber1593 ) -> DispatchResult {1594 let sender = ensure_signed(origin)?;15951596 #[cfg(feature = "runtime-benchmarks")]1597 <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());15981599 Self::ensure_contract_owned(sender, &contract_address)?;1600 <ContractSponsoringRateLimit<T>>::insert(contract_address, rate_limit);1601 Ok(())1602 }16031604 /// Enable the white list for a contract. Only addresses added to the white list with addToContractWhiteList will be able to call this smart contract.1605 /// 1606 /// # Permissions1607 /// 1608 /// * Address that deployed smart contract.1609 /// 1610 /// # Arguments1611 /// 1612 /// -`contract_address`: Address of the contract.1613 /// 1614 /// - `enable`: . 1615 #[weight = <T as Config>::WeightInfo::toggle_contract_white_list()]1616 #[transactional]1617 pub fn toggle_contract_white_list(1618 origin,1619 contract_address: T::AccountId,1620 enable: bool1621 ) -> DispatchResult {1622 let sender = ensure_signed(origin)?;16231624 #[cfg(feature = "runtime-benchmarks")]1625 <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());16261627 Self::ensure_contract_owned(sender, &contract_address)?;1628 <ContractWhiteListEnabled<T>>::insert(contract_address, enable);1629 Ok(())1630 }1631 1632 /// Add an address to smart contract white list.1633 /// 1634 /// # Permissions1635 /// 1636 /// * Address that deployed smart contract.1637 /// 1638 /// # Arguments1639 /// 1640 /// -`contract_address`: Address of the contract.1641 ///1642 /// -`account_address`: Address to add.1643 #[weight = <T as Config>::WeightInfo::add_to_contract_white_list()]1644 #[transactional]1645 pub fn add_to_contract_white_list(1646 origin,1647 contract_address: T::AccountId,1648 account_address: T::AccountId1649 ) -> DispatchResult {1650 let sender = ensure_signed(origin)?;16511652 #[cfg(feature = "runtime-benchmarks")]1653 <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());1654 1655 Self::ensure_contract_owned(sender, &contract_address)?; 1656 <ContractWhiteList<T>>::insert(contract_address, account_address, true);1657 Ok(())1658 }16591660 /// Remove an address from smart contract white list.1661 /// 1662 /// # Permissions1663 /// 1664 /// * Address that deployed smart contract.1665 /// 1666 /// # Arguments1667 /// 1668 /// -`contract_address`: Address of the contract.1669 ///1670 /// -`account_address`: Address to remove.1671 #[weight = <T as Config>::WeightInfo::remove_from_contract_white_list()]1672 #[transactional]1673 pub fn remove_from_contract_white_list(1674 origin,1675 contract_address: T::AccountId,1676 account_address: T::AccountId1677 ) -> DispatchResult {1678 let sender = ensure_signed(origin)?;16791680 #[cfg(feature = "runtime-benchmarks")]1681 <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());16821683 Self::ensure_contract_owned(sender, &contract_address)?;1684 <ContractWhiteList<T>>::remove(contract_address, account_address);1685 Ok(())1686 }16871688 #[weight = <T as Config>::WeightInfo::set_collection_limits()]1689 #[transactional]1690 pub fn set_collection_limits(1691 origin,1692 collection_id: u32,1693 new_limits: CollectionLimits,1694 ) -> DispatchResult {1695 let sender = ensure_signed(origin)?;1696 Self::check_owner_permissions(collection_id, sender.clone())?;1697 let mut target_collection = <Collection<T>>::get(collection_id);1698 let old_limits = target_collection.limits;1699 let chain_limits = ChainLimit::get();17001701 // collection bounds1702 ensure!(new_limits.sponsor_transfer_timeout <= MAX_SPONSOR_TIMEOUT &&1703 new_limits.account_token_ownership_limit <= MAX_TOKEN_OWNERSHIP && 1704 new_limits.sponsored_data_size <= chain_limits.custom_data_limit,1705 Error::<T>::CollectionLimitBoundsExceeded);17061707 // token_limit check prev1708 ensure!(old_limits.token_limit >= new_limits.token_limit, Error::<T>::CollectionTokenLimitExceeded);1709 ensure!(new_limits.token_limit > 0, Error::<T>::CollectionTokenLimitExceeded);17101711 ensure!(1712 (old_limits.owner_can_transfer || !new_limits.owner_can_transfer) &&1713 (old_limits.owner_can_destroy || !new_limits.owner_can_destroy),1714 Error::<T>::OwnerPermissionsCantBeReverted,1715 );17161717 target_collection.limits = new_limits;1718 <Collection<T>>::insert(collection_id, target_collection);17191720 Ok(())1721 } 1722 }1723}17241725impl<T: Config> Module<T> {17261727 pub fn transfer_internal(sender: T::AccountId, recipient: T::AccountId, collection_id: CollectionId, item_id: TokenId, value: u128) -> DispatchResult {17281729 let target_collection = <Collection<T>>::get(collection_id);17301731 // Limits check1732 Self::is_correct_transfer(collection_id, &target_collection, &recipient)?;17331734 // Transfer permissions check1735 ensure!(Self::is_item_owner(sender.clone(), collection_id, item_id) ||1736 Self::is_owner_or_admin_permissions(collection_id, sender.clone()),1737 Error::<T>::NoPermission);17381739 if target_collection.access == AccessMode::WhiteList {1740 Self::check_white_list(collection_id, &sender)?;1741 Self::check_white_list(collection_id, &recipient)?;1742 }17431744 match target_collection.mode1745 {1746 CollectionMode::NFT => Self::transfer_nft(collection_id, item_id, sender.clone(), recipient.clone())?,1747 CollectionMode::Fungible(_) => Self::transfer_fungible(collection_id, value, &sender, &recipient)?,1748 CollectionMode::ReFungible => Self::transfer_refungible(collection_id, item_id, value, sender.clone(), recipient.clone())?,1749 _ => ()1750 };17511752 Self::deposit_event(RawEvent::Transfer(collection_id, item_id, sender, recipient, value));17531754 Ok(())1755 }175617571758 fn is_correct_transfer(collection_id: CollectionId, collection: &CollectionType<T::AccountId>, recipient: &T::AccountId) -> DispatchResult {17591760 // check token limit and account token limit1761 let account_items: u32 = <AddressTokens<T>>::get(collection_id, recipient).len() as u32;1762 ensure!(collection.limits.account_token_ownership_limit > account_items, Error::<T>::AccountTokenLimitExceeded);1763 1764 Ok(())1765 }17661767 fn can_create_items_in_collection(collection_id: CollectionId, collection: &CollectionType<T::AccountId>, sender: &T::AccountId, owner: &T::AccountId) -> DispatchResult {17681769 // check token limit and account token limit1770 let total_items: u32 = ItemListIndex::get(collection_id);1771 let account_items: u32 = <AddressTokens<T>>::get(collection_id, owner).len() as u32;1772 ensure!(collection.limits.token_limit > total_items, Error::<T>::CollectionTokenLimitExceeded);1773 ensure!(collection.limits.account_token_ownership_limit > account_items, Error::<T>::AccountTokenLimitExceeded);17741775 if !Self::is_owner_or_admin_permissions(collection_id, sender.clone()) {1776 ensure!(collection.mint_mode == true, Error::<T>::PublicMintingNotAllowed);1777 Self::check_white_list(collection_id, owner)?;1778 Self::check_white_list(collection_id, sender)?;1779 }17801781 Ok(())1782 }17831784 fn validate_create_item_args(target_collection: &CollectionType<T::AccountId>, data: &CreateItemData) -> DispatchResult {1785 match target_collection.mode1786 {1787 CollectionMode::NFT => {1788 if let CreateItemData::NFT(data) = data {1789 // check sizes1790 ensure!(ChainLimit::get().custom_data_limit >= data.const_data.len() as u32, Error::<T>::TokenConstDataLimitExceeded);1791 ensure!(ChainLimit::get().custom_data_limit >= data.variable_data.len() as u32, Error::<T>::TokenVariableDataLimitExceeded);1792 } else {1793 fail!(Error::<T>::NotNftDataUsedToMintNftCollectionToken);1794 }1795 },1796 CollectionMode::Fungible(_) => {1797 if let CreateItemData::Fungible(_) = data {1798 } else {1799 fail!(Error::<T>::NotFungibleDataUsedToMintFungibleCollectionToken);1800 }1801 },1802 CollectionMode::ReFungible => {1803 if let CreateItemData::ReFungible(data) = data {18041805 // check sizes1806 ensure!(ChainLimit::get().custom_data_limit >= data.const_data.len() as u32, Error::<T>::TokenConstDataLimitExceeded);1807 ensure!(ChainLimit::get().custom_data_limit >= data.variable_data.len() as u32, Error::<T>::TokenVariableDataLimitExceeded);18081809 // Check refungibility limits1810 ensure!(data.pieces <= MAX_REFUNGIBLE_PIECES, Error::<T>::WrongRefungiblePieces);1811 ensure!(data.pieces > 0, Error::<T>::WrongRefungiblePieces);1812 } else {1813 fail!(Error::<T>::NotReFungibleDataUsedToMintReFungibleCollectionToken);1814 }1815 },1816 _ => { fail!(Error::<T>::UnexpectedCollectionType); }1817 };18181819 Ok(())1820 }18211822 fn create_item_no_validation(collection_id: CollectionId, owner: T::AccountId, data: CreateItemData) -> DispatchResult {1823 match data1824 {1825 CreateItemData::NFT(data) => {1826 let item = NftItemType {1827 owner: owner.clone(),1828 const_data: data.const_data,1829 variable_data: data.variable_data1830 };18311832 Self::add_nft_item(collection_id, item)?;1833 },1834 CreateItemData::Fungible(data) => {1835 Self::add_fungible_item(collection_id, &owner, data.value)?;1836 },1837 CreateItemData::ReFungible(data) => {1838 let mut owner_list = Vec::new();1839 owner_list.push(Ownership {owner: owner.clone(), fraction: data.pieces});18401841 let item = ReFungibleItemType {1842 owner: owner_list,1843 const_data: data.const_data,1844 variable_data: data.variable_data1845 };18461847 Self::add_refungible_item(collection_id, item)?;1848 }1849 };18501851 Ok(())1852 }18531854 fn add_fungible_item(collection_id: CollectionId, owner: &T::AccountId, value: u128) -> DispatchResult {18551856 // Does new owner already have an account?1857 let mut balance: u128 = 0;1858 if <FungibleItemList<T>>::contains_key(collection_id, owner) {1859 balance = <FungibleItemList<T>>::get(collection_id, owner).value;1860 } 18611862 // Mint 1863 let item = FungibleItemType {1864 value: balance + value1865 };1866 <FungibleItemList<T>>::insert(collection_id, (*owner).clone(), item);18671868 // Update balance1869 let new_balance = <Balance<T>>::get(collection_id, owner)1870 .checked_add(value)1871 .ok_or(Error::<T>::NumOverflow)?;1872 <Balance<T>>::insert(collection_id, (*owner).clone(), new_balance);18731874 Self::deposit_event(RawEvent::ItemCreated(collection_id, 0, owner.clone()));1875 Ok(())1876 }18771878 fn add_refungible_item(collection_id: CollectionId, item: ReFungibleItemType<T::AccountId>) -> DispatchResult {1879 let current_index = <ItemListIndex>::get(collection_id)1880 .checked_add(1)1881 .ok_or(Error::<T>::NumOverflow)?;1882 let itemcopy = item.clone();18831884 ensure!(1885 item.owner.len() == 1,1886 Error::<T>::BadCreateRefungibleCall,1887 );1888 let item_owner = item.owner.first().expect("only one owner is defined");18891890 let value = item_owner.fraction;1891 let owner = item_owner.owner.clone();18921893 Self::add_token_index(collection_id, current_index, &owner)?;18941895 <ItemListIndex>::insert(collection_id, current_index);1896 <ReFungibleItemList<T>>::insert(collection_id, current_index, itemcopy);18971898 // Update balance1899 let new_balance = <Balance<T>>::get(collection_id, &owner)1900 .checked_add(value)1901 .ok_or(Error::<T>::NumOverflow)?;1902 <Balance<T>>::insert(collection_id, owner.clone(), new_balance);19031904 Self::deposit_event(RawEvent::ItemCreated(collection_id, current_index, owner));1905 Ok(())1906 }19071908 fn add_nft_item(collection_id: CollectionId, item: NftItemType<T::AccountId>) -> DispatchResult {1909 let current_index = <ItemListIndex>::get(collection_id)1910 .checked_add(1)1911 .ok_or(Error::<T>::NumOverflow)?;19121913 let item_owner = item.owner.clone();1914 Self::add_token_index(collection_id, current_index, &item.owner)?;19151916 <ItemListIndex>::insert(collection_id, current_index);1917 <NftItemList<T>>::insert(collection_id, current_index, item);19181919 // Update balance1920 let new_balance = <Balance<T>>::get(collection_id, item_owner.clone())1921 .checked_add(1)1922 .ok_or(Error::<T>::NumOverflow)?;1923 <Balance<T>>::insert(collection_id, item_owner.clone(), new_balance);19241925 Self::deposit_event(RawEvent::ItemCreated(collection_id, current_index, item_owner));1926 Ok(())1927 }19281929 fn burn_refungible_item(1930 collection_id: CollectionId,1931 item_id: TokenId,1932 owner: &T::AccountId,1933 ) -> DispatchResult {1934 ensure!(1935 <ReFungibleItemList<T>>::contains_key(collection_id, item_id),1936 Error::<T>::TokenNotFound1937 );1938 let mut token = <ReFungibleItemList<T>>::get(collection_id, item_id);1939 let rft_balance = token1940 .owner1941 .iter()1942 .find(|&i| i.owner == *owner)1943 .ok_or(Error::<T>::TokenNotFound)?;1944 Self::remove_token_index(collection_id, item_id, owner)?;19451946 // update balance1947 let new_balance = <Balance<T>>::get(collection_id, rft_balance.owner.clone())1948 .checked_sub(rft_balance.fraction)1949 .ok_or(Error::<T>::NumOverflow)?;1950 <Balance<T>>::insert(collection_id, rft_balance.owner.clone(), new_balance);19511952 // Re-create owners list with sender removed1953 let index = token1954 .owner1955 .iter()1956 .position(|i| i.owner == *owner)1957 .expect("owned item is exists");1958 token.owner.remove(index);1959 let owner_count = token.owner.len();19601961 // Burn the token completely if this was the last (only) owner1962 if owner_count == 0 {1963 <ReFungibleItemList<T>>::remove(collection_id, item_id);1964 }1965 else {1966 <ReFungibleItemList<T>>::insert(collection_id, item_id, token);1967 }19681969 Ok(())1970 }19711972 fn burn_nft_item(collection_id: CollectionId, item_id: TokenId) -> DispatchResult {1973 ensure!(1974 <NftItemList<T>>::contains_key(collection_id, item_id),1975 Error::<T>::TokenNotFound1976 );1977 let item = <NftItemList<T>>::get(collection_id, item_id);1978 Self::remove_token_index(collection_id, item_id, &item.owner)?;19791980 // update balance1981 let new_balance = <Balance<T>>::get(collection_id, &item.owner)1982 .checked_sub(1)1983 .ok_or(Error::<T>::NumOverflow)?;1984 <Balance<T>>::insert(collection_id, item.owner.clone(), new_balance);1985 <NftItemList<T>>::remove(collection_id, item_id);19861987 Ok(())1988 }19891990 fn burn_fungible_item(owner: &T::AccountId, collection_id: CollectionId, value: u128) -> DispatchResult {1991 ensure!(1992 <FungibleItemList<T>>::contains_key(collection_id, owner),1993 Error::<T>::TokenNotFound1994 );1995 let mut balance = <FungibleItemList<T>>::get(collection_id, owner);1996 ensure!(balance.value >= value, Error::<T>::TokenValueNotEnough);19971998 // update balance1999 let new_balance = <Balance<T>>::get(collection_id, owner)2000 .checked_sub(value)2001 .ok_or(Error::<T>::NumOverflow)?;2002 <Balance<T>>::insert(collection_id, (*owner).clone(), new_balance);20032004 if balance.value - value > 0 {2005 balance.value -= value;2006 <FungibleItemList<T>>::insert(collection_id, (*owner).clone(), balance);2007 }2008 else {2009 <FungibleItemList<T>>::remove(collection_id, owner);2010 }20112012 Ok(())2013 }20142015 fn collection_exists(collection_id: CollectionId) -> DispatchResult {2016 ensure!(2017 <Collection<T>>::contains_key(collection_id),2018 Error::<T>::CollectionNotFound2019 );2020 Ok(())2021 }20222023 fn check_owner_permissions(collection_id: CollectionId, subject: T::AccountId) -> DispatchResult {2024 Self::collection_exists(collection_id)?;20252026 let target_collection = <Collection<T>>::get(collection_id);2027 ensure!(2028 subject == target_collection.owner,2029 Error::<T>::NoPermission2030 );20312032 Ok(())2033 }20342035 fn is_owner_or_admin_permissions(collection_id: CollectionId, subject: T::AccountId) -> bool {2036 let target_collection = <Collection<T>>::get(collection_id);2037 let mut result: bool = subject == target_collection.owner;2038 let exists = <AdminList<T>>::contains_key(collection_id);20392040 if !result & exists {2041 if <AdminList<T>>::get(collection_id).contains(&subject) {2042 result = true2043 }2044 }20452046 result2047 }20482049 fn check_owner_or_admin_permissions(2050 collection_id: CollectionId,2051 subject: T::AccountId,2052 ) -> DispatchResult {2053 Self::collection_exists(collection_id)?;2054 let result = Self::is_owner_or_admin_permissions(collection_id, subject.clone());20552056 ensure!(2057 result,2058 Error::<T>::NoPermission2059 );2060 Ok(())2061 }20622063 fn owned_amount(2064 subject: T::AccountId,2065 collection_id: CollectionId,2066 item_id: TokenId,2067 ) -> Option<u128> {2068 let target_collection = <Collection<T>>::get(collection_id);20692070 match target_collection.mode {2071 CollectionMode::NFT => {2072 if <NftItemList<T>>::get(collection_id, item_id).owner == subject {2073 return Some(1)2074 }2075 None2076 },2077 CollectionMode::Fungible(_) => {2078 if <FungibleItemList<T>>::contains_key(collection_id, &subject) {2079 return Some(<FungibleItemList<T>>::get(collection_id, &subject)2080 .value);2081 }2082 None2083 },2084 CollectionMode::ReFungible => <ReFungibleItemList<T>>::get(collection_id, item_id)2085 .owner2086 .iter()2087 .find(|i| i.owner == subject)2088 .map(|i| i.fraction),2089 CollectionMode::Invalid => None,2090 }2091 }20922093 fn is_item_owner(subject: T::AccountId, collection_id: CollectionId, item_id: TokenId) -> bool {2094 let target_collection = <Collection<T>>::get(collection_id);20952096 match target_collection.mode {2097 CollectionMode::NFT => {2098 <NftItemList<T>>::get(collection_id, item_id).owner == subject2099 }2100 CollectionMode::Fungible(_) => {2101 <FungibleItemList<T>>::contains_key(collection_id, &subject)2102 }2103 CollectionMode::ReFungible => {2104 <ReFungibleItemList<T>>::get(collection_id, item_id)2105 .owner2106 .iter()2107 .any(|i| i.owner == subject)2108 }2109 CollectionMode::Invalid => false,2110 }2111 }21122113 fn check_white_list(collection_id: CollectionId, address: &T::AccountId) -> DispatchResult {2114 let mes = Error::<T>::AddresNotInWhiteList;2115 ensure!(<WhiteList<T>>::contains_key(collection_id, address), mes);21162117 Ok(())2118 }21192120 /// Check if token exists. In case of Fungible, check if there is an entry for 2121 /// the owner in fungible balances double map2122 fn token_exists(2123 collection_id: CollectionId,2124 item_id: TokenId,2125 owner: &T::AccountId2126 ) -> DispatchResult {2127 let target_collection = <Collection<T>>::get(collection_id);2128 let exists = match target_collection.mode2129 {2130 CollectionMode::NFT => <NftItemList<T>>::contains_key(collection_id, item_id),2131 CollectionMode::Fungible(_) => <FungibleItemList<T>>::contains_key(collection_id, owner),2132 CollectionMode::ReFungible => <ReFungibleItemList<T>>::contains_key(collection_id, item_id),2133 _ => false2134 };21352136 ensure!(exists == true, Error::<T>::TokenNotFound);2137 Ok(())2138 }21392140 fn transfer_fungible(2141 collection_id: CollectionId,2142 value: u128,2143 owner: &T::AccountId,2144 recipient: &T::AccountId,2145 ) -> DispatchResult {2146 Self::token_exists(collection_id, 0, owner)?;21472148 let mut balance = <FungibleItemList<T>>::get(collection_id, owner);2149 ensure!(balance.value >= value, Error::<T>::TokenValueTooLow);21502151 // Send balance to recipient (updates balanceOf of recipient)2152 Self::add_fungible_item(collection_id, recipient, value)?;21532154 // update balanceOf of sender2155 <Balance<T>>::insert(collection_id, (*owner).clone(), balance.value - value);21562157 // Reduce or remove sender2158 if balance.value == value {2159 <FungibleItemList<T>>::remove(collection_id, owner);2160 }2161 else {2162 balance.value -= value;2163 <FungibleItemList<T>>::insert(collection_id, (*owner).clone(), balance);2164 }21652166 Ok(())2167 }21682169 fn transfer_refungible(2170 collection_id: CollectionId,2171 item_id: TokenId,2172 value: u128,2173 owner: T::AccountId,2174 new_owner: T::AccountId,2175 ) -> DispatchResult {2176 Self::token_exists(collection_id, item_id, &owner)?;21772178 let full_item = <ReFungibleItemList<T>>::get(collection_id, item_id);2179 let item = full_item2180 .owner2181 .iter()2182 .filter(|i| i.owner == owner)2183 .next()2184 .ok_or(Error::<T>::TokenNotFound)?;2185 let amount = item.fraction;21862187 ensure!(amount >= value, Error::<T>::TokenValueTooLow);21882189 // update balance2190 let balance_old_owner = <Balance<T>>::get(collection_id, item.owner.clone())2191 .checked_sub(value)2192 .ok_or(Error::<T>::NumOverflow)?;2193 <Balance<T>>::insert(collection_id, item.owner.clone(), balance_old_owner);21942195 let balance_new_owner = <Balance<T>>::get(collection_id, new_owner.clone())2196 .checked_add(value)2197 .ok_or(Error::<T>::NumOverflow)?;2198 <Balance<T>>::insert(collection_id, new_owner.clone(), balance_new_owner);21992200 let old_owner = item.owner.clone();2201 let new_owner_has_account = full_item.owner.iter().any(|i| i.owner == new_owner);22022203 // transfer2204 if amount == value && !new_owner_has_account {2205 // change owner2206 // new owner do not have account2207 let mut new_full_item = full_item.clone();2208 new_full_item2209 .owner2210 .iter_mut()2211 .find(|i| i.owner == owner)2212 .expect("old owner does present in refungible")2213 .owner = new_owner.clone();2214 <ReFungibleItemList<T>>::insert(collection_id, item_id, new_full_item);22152216 // update index collection2217 Self::move_token_index(collection_id, item_id, &old_owner, &new_owner)?;2218 } else {2219 let mut new_full_item = full_item.clone();2220 new_full_item2221 .owner2222 .iter_mut()2223 .find(|i| i.owner == owner)2224 .expect("old owner does present in refungible")2225 .fraction -= value;22262227 // separate amount2228 if new_owner_has_account {2229 // new owner has account2230 new_full_item2231 .owner2232 .iter_mut()2233 .find(|i| i.owner == new_owner)2234 .expect("new owner has account")2235 .fraction += value;2236 } else {2237 // new owner do not have account2238 new_full_item.owner.push(Ownership {2239 owner: new_owner.clone(),2240 fraction: value,2241 });2242 Self::add_token_index(collection_id, item_id, &new_owner)?;2243 }22442245 <ReFungibleItemList<T>>::insert(collection_id, item_id, new_full_item);2246 }22472248 Ok(())2249 }22502251 fn transfer_nft(2252 collection_id: CollectionId,2253 item_id: TokenId,2254 sender: T::AccountId,2255 new_owner: T::AccountId,2256 ) -> DispatchResult {2257 Self::token_exists(collection_id, item_id, &sender)?;22582259 let mut item = <NftItemList<T>>::get(collection_id, item_id);22602261 ensure!(2262 sender == item.owner,2263 Error::<T>::MustBeTokenOwner2264 );22652266 // update balance2267 let balance_old_owner = <Balance<T>>::get(collection_id, item.owner.clone())2268 .checked_sub(1)2269 .ok_or(Error::<T>::NumOverflow)?;2270 <Balance<T>>::insert(collection_id, item.owner.clone(), balance_old_owner);22712272 let balancenew_owner = <Balance<T>>::get(collection_id, new_owner.clone())2273 .checked_add(1)2274 .ok_or(Error::<T>::NumOverflow)?;2275 <Balance<T>>::insert(collection_id, new_owner.clone(), balancenew_owner);22762277 // change owner2278 let old_owner = item.owner.clone();2279 item.owner = new_owner.clone();2280 <NftItemList<T>>::insert(collection_id, item_id, item);22812282 // update index collection2283 Self::move_token_index(collection_id, item_id, &old_owner, &new_owner)?;22842285 Ok(())2286 }2287 2288 fn set_re_fungible_variable_data(2289 collection_id: CollectionId,2290 item_id: TokenId,2291 data: Vec<u8>2292 ) -> DispatchResult {2293 let mut item = <ReFungibleItemList<T>>::get(collection_id, item_id);22942295 item.variable_data = data;22962297 <ReFungibleItemList<T>>::insert(collection_id, item_id, item);22982299 Ok(())2300 }23012302 fn set_nft_variable_data(2303 collection_id: CollectionId,2304 item_id: TokenId,2305 data: Vec<u8>2306 ) -> DispatchResult {2307 let mut item = <NftItemList<T>>::get(collection_id, item_id);2308 2309 item.variable_data = data;23102311 <NftItemList<T>>::insert(collection_id, item_id, item);2312 2313 Ok(())2314 }23152316 fn init_collection(item: &CollectionType<T::AccountId>) {2317 // check params2318 assert!(2319 item.decimal_points <= MAX_DECIMAL_POINTS,2320 "decimal_points parameter must be lower than MAX_DECIMAL_POINTS"2321 );2322 assert!(2323 item.name.len() <= 64,2324 "Collection name can not be longer than 63 char"2325 );2326 assert!(2327 item.name.len() <= 256,2328 "Collection description can not be longer than 255 char"2329 );2330 assert!(2331 item.token_prefix.len() <= 16,2332 "Token prefix can not be longer than 15 char"2333 );23342335 // Generate next collection ID2336 let next_id = CreatedCollectionCount::get()2337 .checked_add(1)2338 .unwrap();23392340 CreatedCollectionCount::put(next_id);2341 }23422343 fn init_nft_token(collection_id: CollectionId, item: &NftItemType<T::AccountId>) {2344 let current_index = <ItemListIndex>::get(collection_id)2345 .checked_add(1)2346 .unwrap();23472348 let item_owner = item.owner.clone();2349 Self::add_token_index(collection_id, current_index, &item.owner).unwrap();23502351 <ItemListIndex>::insert(collection_id, current_index);23522353 // Update balance2354 let new_balance = <Balance<T>>::get(collection_id, &item_owner)2355 .checked_add(1)2356 .unwrap();2357 <Balance<T>>::insert(collection_id, item_owner.clone(), new_balance);2358 }23592360 fn init_fungible_token(collection_id: CollectionId, owner: &T::AccountId, item: &FungibleItemType) {2361 let current_index = <ItemListIndex>::get(collection_id)2362 .checked_add(1)2363 .unwrap();23642365 Self::add_token_index(collection_id, current_index, owner).unwrap();23662367 <ItemListIndex>::insert(collection_id, current_index);23682369 // Update balance2370 let new_balance = <Balance<T>>::get(collection_id, owner)2371 .checked_add(item.value)2372 .unwrap();2373 <Balance<T>>::insert(collection_id, (*owner).clone(), new_balance);2374 }23752376 fn init_refungible_token(collection_id: CollectionId, item: &ReFungibleItemType<T::AccountId>) {2377 let current_index = <ItemListIndex>::get(collection_id)2378 .checked_add(1)2379 .unwrap();23802381 let value = item.owner.first().unwrap().fraction;2382 let owner = item.owner.first().unwrap().owner.clone();23832384 Self::add_token_index(collection_id, current_index, &owner).unwrap();23852386 <ItemListIndex>::insert(collection_id, current_index);23872388 // Update balance2389 let new_balance = <Balance<T>>::get(collection_id, &owner)2390 .checked_add(value)2391 .unwrap();2392 <Balance<T>>::insert(collection_id, owner.clone(), new_balance);2393 }23942395 fn add_token_index(collection_id: CollectionId, item_index: TokenId, owner: &T::AccountId) -> DispatchResult {23962397 // add to account limit2398 if <AccountItemCount<T>>::contains_key(owner) {23992400 // bound Owned tokens by a single address2401 let count = <AccountItemCount<T>>::get(owner);2402 ensure!(count < ChainLimit::get().account_token_ownership_limit, Error::<T>::AddressOwnershipLimitExceeded);24032404 <AccountItemCount<T>>::insert(owner.clone(), count2405 .checked_add(1)2406 .ok_or(Error::<T>::NumOverflow)?);2407 }2408 else {2409 <AccountItemCount<T>>::insert(owner.clone(), 1);2410 }24112412 let list_exists = <AddressTokens<T>>::contains_key(collection_id, owner);2413 if list_exists {2414 let mut list = <AddressTokens<T>>::get(collection_id, owner);2415 let item_contains = list.contains(&item_index.clone());24162417 if !item_contains {2418 list.push(item_index.clone());2419 }24202421 <AddressTokens<T>>::insert(collection_id, owner.clone(), list);2422 } else {2423 let mut itm = Vec::new();2424 itm.push(item_index.clone());2425 <AddressTokens<T>>::insert(collection_id, owner.clone(), itm);2426 }24272428 Ok(())2429 }24302431 fn remove_token_index(2432 collection_id: CollectionId,2433 item_index: TokenId,2434 owner: &T::AccountId,2435 ) -> DispatchResult {24362437 // update counter2438 <AccountItemCount<T>>::insert(owner.clone(), 2439 <AccountItemCount<T>>::get(owner)2440 .checked_sub(1)2441 .ok_or(Error::<T>::NumOverflow)?);244224432444 let list_exists = <AddressTokens<T>>::contains_key(collection_id, owner);2445 if list_exists {2446 let mut list = <AddressTokens<T>>::get(collection_id, owner);2447 let item_contains = list.contains(&item_index.clone());24482449 if item_contains {2450 list.retain(|&item| item != item_index);2451 <AddressTokens<T>>::insert(collection_id, owner.clone(), list);2452 }2453 }24542455 Ok(())2456 }24572458 fn move_token_index(2459 collection_id: CollectionId,2460 item_index: TokenId,2461 old_owner: &T::AccountId,2462 new_owner: &T::AccountId,2463 ) -> DispatchResult {2464 Self::remove_token_index(collection_id, item_index, old_owner)?;2465 Self::add_token_index(collection_id, item_index, new_owner)?;24662467 Ok(())2468 }2469 2470 fn ensure_contract_owned(account: T::AccountId, contract: &T::AccountId) -> DispatchResult {2471 if <ContractOwner<T>>::contains_key(contract.clone()) {2472 let owner = <ContractOwner<T>>::get(contract);2473 ensure!(account == owner, Error::<T>::NoPermission);2474 } else {2475 fail!(Error::<T>::NoPermission);2476 }24772478 Ok(())2479 }2480}24812482////////////////////////////////////////////////////////////////////////////////////////////////////2483// Economic models2484// #region24852486/// Fee multiplier.2487pub type Multiplier = FixedU128;24882489type BalanceOf<T> = <<T as pallet_transaction_payment::Config>::OnChargeTransaction as pallet_transaction_payment::OnChargeTransaction<T>>::Balance;24902491/// Require the transactor pay for themselves and maybe include a tip to gain additional priority2492/// in the queue.2493#[derive(Encode, Decode, Clone, Eq, PartialEq)]2494pub struct ChargeTransactionPayment<T: Config>(#[codec(compact)] BalanceOf<T>);24952496impl<T: Config + Send + Sync> sp_std::fmt::Debug 2497 for ChargeTransactionPayment<T>2498{2499 #[cfg(feature = "std")]2500 fn fmt(&self, f: &mut sp_std::fmt::Formatter) -> sp_std::fmt::Result {2501 write!(f, "ChargeTransactionPayment<{:?}>", self.0)2502 }2503 #[cfg(not(feature = "std"))]2504 fn fmt(&self, _: &mut sp_std::fmt::Formatter) -> sp_std::fmt::Result {2505 Ok(())2506 }2507}25082509impl<T: Config> ChargeTransactionPayment<T>2510where2511 T::Call: Dispatchable<Info=DispatchInfo, PostInfo=PostDispatchInfo> + IsSubType<Call<T>> + IsSubType<pallet_contracts::Call<T>>,2512 BalanceOf<T>: Send + Sync + From<u64> + FixedPointOperand,2513 T::AccountId: AsRef<[u8]>,2514 T::AccountId: UncheckedFrom<T::Hash>,2515{2516 fn traditional_fee(2517 len: usize,2518 info: &DispatchInfoOf<T::Call>,2519 tip: BalanceOf<T>,2520 ) -> BalanceOf<T>2521 where2522 T::Call: Dispatchable<Info = DispatchInfo>,2523 {2524 <pallet_transaction_payment::Module<T>>::compute_fee(len as u32, info, tip)2525 }25262527 fn get_priority(len: usize, info: &DispatchInfoOf<T::Call>, final_fee: BalanceOf<T>) -> TransactionPriority {2528 let weight_saturation = T::BlockWeights::get().max_block / info.weight.max(1);2529 let max_block_length = *T::BlockLength::get().max.get(DispatchClass::Normal);2530 let len_saturation = max_block_length as u64 / (len as u64).max(1);2531 let coefficient: BalanceOf<T> = weight_saturation2532 .min(len_saturation)2533 .saturated_into::<BalanceOf<T>>();2534 final_fee2535 .saturating_mul(coefficient)2536 .saturated_into::<TransactionPriority>()2537 }25382539 fn withdraw_fee(2540 &self,2541 who: &T::AccountId,2542 call: &T::Call,2543 info: &DispatchInfoOf<T::Call>,2544 len: usize,2545 ) -> Result<2546 (2547 BalanceOf<T>,2548 <<T as pallet_transaction_payment::Config>::OnChargeTransaction as pallet_transaction_payment::OnChargeTransaction<T>>::LiquidityInfo,2549 ),2550 TransactionValidityError,2551 > {2552 let tip = self.0;25532554 let fee = Self::traditional_fee(len, info, tip);25552556 // Only mess with balances if fee is not zero.2557 if fee.is_zero() {2558 return <<T as pallet_transaction_payment::Config>::OnChargeTransaction as pallet_transaction_payment::OnChargeTransaction<T>>::withdraw_fee(who, call, info, fee, tip)2559 .map(|i| (fee, i));2560 }25612562 // Determine who is paying transaction fee based on ecnomic model2563 // Parse call to extract collection ID and access collection sponsor2564 let mut sponsor: T::AccountId = match IsSubType::<Call<T>>::is_sub_type(call) {2565 Some(Call::create_item(collection_id, _owner, _properties)) => {25662567 // sponsor timeout2568 let block_number = <system::Module<T>>::block_number() as T::BlockNumber;25692570 let collection = <Collection<T>>::get(collection_id);25712572 let limit = collection.limits.sponsor_transfer_timeout;2573 let mut sponsored = true;2574 if <CreateItemBasket<T>>::contains_key((collection_id, &who)) {2575 let last_tx_block = <CreateItemBasket<T>>::get((collection_id, &who));2576 let limit_time = last_tx_block + limit.into();2577 if block_number <= limit_time {2578 sponsored = false;2579 }2580 }2581 if sponsored {2582 <CreateItemBasket<T>>::insert((collection_id, who.clone()), block_number);2583 }25842585 // check free create limit2586 if (collection.limits.sponsored_data_size >= (_properties.len() as u32)) &&2587 (sponsored)2588 {2589 collection.sponsorship.sponsor()2590 .cloned()2591 .unwrap_or_default()2592 } else {2593 T::AccountId::default()2594 }2595 }2596 Some(Call::transfer(_new_owner, collection_id, item_id, _value)) => {2597 2598 let mut sponsor_transfer = false;2599 if <Collection<T>>::get(collection_id).sponsorship.confirmed() {26002601 let collection_limits = <Collection<T>>::get(collection_id).limits;2602 let collection_mode = <Collection<T>>::get(collection_id).mode;2603 2604 // sponsor timeout2605 let block_number = <system::Module<T>>::block_number() as T::BlockNumber;2606 sponsor_transfer = match collection_mode {2607 CollectionMode::NFT => {2608 2609 // get correct limit2610 let limit: u32 = if collection_limits.sponsor_transfer_timeout > 0 {2611 collection_limits.sponsor_transfer_timeout2612 } else {2613 ChainLimit::get().nft_sponsor_transfer_timeout2614 };2615 2616 let mut sponsored = true;2617 if <NftTransferBasket<T>>::contains_key(collection_id, item_id) {2618 let last_tx_block = <NftTransferBasket<T>>::get(collection_id, item_id);2619 let limit_time = last_tx_block + limit.into();2620 if block_number <= limit_time {2621 sponsored = false;2622 }2623 }2624 if sponsored {2625 <NftTransferBasket<T>>::insert(collection_id, item_id, block_number);2626 }26272628 sponsored2629 }2630 CollectionMode::Fungible(_) => {2631 2632 // get correct limit2633 let limit: u32 = if collection_limits.sponsor_transfer_timeout > 0 {2634 collection_limits.sponsor_transfer_timeout2635 } else {2636 ChainLimit::get().fungible_sponsor_transfer_timeout2637 };2638 2639 let block_number = <system::Module<T>>::block_number() as T::BlockNumber;2640 let mut sponsored = true;2641 if <FungibleTransferBasket<T>>::contains_key(collection_id, who) {2642 let last_tx_block = <FungibleTransferBasket<T>>::get(collection_id, who);2643 let limit_time = last_tx_block + limit.into();2644 if block_number <= limit_time {2645 sponsored = false;2646 }2647 }2648 if sponsored {2649 <FungibleTransferBasket<T>>::insert(collection_id, who, block_number);2650 }26512652 sponsored2653 }2654 CollectionMode::ReFungible => {2655 2656 // get correct limit2657 let limit: u32 = if collection_limits.sponsor_transfer_timeout > 0 {2658 collection_limits.sponsor_transfer_timeout2659 } else {2660 ChainLimit::get().refungible_sponsor_transfer_timeout2661 };2662 2663 let mut sponsored = true;2664 if <ReFungibleTransferBasket<T>>::contains_key(collection_id, item_id) {2665 let last_tx_block = <ReFungibleTransferBasket<T>>::get(collection_id, item_id);2666 let limit_time = last_tx_block + limit.into();2667 if block_number <= limit_time {2668 sponsored = false;2669 }2670 }2671 if sponsored {2672 <ReFungibleTransferBasket<T>>::insert(collection_id, item_id, block_number);2673 }26742675 sponsored2676 }2677 _ => {2678 false2679 },2680 };2681 }26822683 if !sponsor_transfer {2684 T::AccountId::default()2685 } else {2686 <Collection<T>>::get(collection_id).sponsorship.sponsor()2687 .cloned()2688 .unwrap_or_default()2689 }2690 }26912692 _ => T::AccountId::default(),2693 };26942695 // Sponsor smart contracts2696 sponsor = match IsSubType::<pallet_contracts::Call<T>>::is_sub_type(call) {26972698 // On instantiation: set the contract owner2699 Some(pallet_contracts::Call::instantiate(_endowment, _gas_limit, code_hash, _data, salt)) => {27002701 let new_contract_address = <pallet_contracts::Module<T>>::contract_address(2702 &who,2703 code_hash,2704 salt,2705 );2706 <ContractOwner<T>>::insert(new_contract_address.clone(), who.clone());27072708 T::AccountId::default()2709 },27102711 // On instantiation with code: set the contract owner2712 Some(pallet_contracts::Call::instantiate_with_code(_endowment, _gas_limit, _code, _data, _salt)) => {27132714 let new_contract_address = <pallet_contracts::Module<T>>::contract_address(2715 &who,2716 &T::Hashing::hash(&_code),2717 _salt,2718 );27192720 <ContractOwner<T>>::insert(new_contract_address.clone(), who.clone());27212722 T::AccountId::default()2723 }27242725 // When the contract is called, check if the sponsoring is enabled and pay fees from contract endowment if it is2726 Some(pallet_contracts::Call::call(dest, _value, _gas_limit, _data)) => {27272728 let called_contract: T::AccountId = T::Lookup::lookup((*dest).clone()).unwrap_or(T::AccountId::default());27292730 let owned_contract = <ContractOwner<T>>::contains_key(called_contract.clone())2731 && <ContractOwner<T>>::get(called_contract.clone()) == *who;2732 let white_list_enabled = <ContractWhiteListEnabled<T>>::contains_key(called_contract.clone()) && <ContractWhiteListEnabled<T>>::get(called_contract.clone());2733 2734 if !owned_contract && white_list_enabled {2735 if !<ContractWhiteList<T>>::contains_key(called_contract.clone(), who) {2736 return Err(InvalidTransaction::Call.into());2737 }2738 }27392740 let mut sponsor_transfer = false;2741 if <ContractSponsoringRateLimit<T>>::contains_key(called_contract.clone()) {2742 let last_tx_block = <ContractSponsorBasket<T>>::get((&called_contract, &who));2743 let block_number = <system::Module<T>>::block_number() as T::BlockNumber;2744 let rate_limit = <ContractSponsoringRateLimit<T>>::get(&called_contract);2745 let limit_time = last_tx_block + rate_limit;27462747 if block_number >= limit_time {2748 <ContractSponsorBasket<T>>::insert((called_contract.clone(), who.clone()), block_number);2749 sponsor_transfer = true;2750 }2751 } else {2752 sponsor_transfer = false;2753 }2754 2755 2756 let mut sp = T::AccountId::default();2757 if sponsor_transfer {2758 if <ContractSelfSponsoring<T>>::contains_key(called_contract.clone()) {2759 if <ContractSelfSponsoring<T>>::get(called_contract.clone()) {2760 sp = called_contract;2761 }2762 }2763 }27642765 sp2766 },27672768 _ => sponsor,2769 };27702771 let mut who_pays_fee: T::AccountId = sponsor.clone();2772 if sponsor == T::AccountId::default() {2773 who_pays_fee = who.clone();2774 }27752776 <<T as pallet_transaction_payment::Config>::OnChargeTransaction as pallet_transaction_payment::OnChargeTransaction<T>>::withdraw_fee(&who_pays_fee, call, info, fee, tip)2777 .map(|i| (fee, i))2778 }2779}278027812782impl<T: Config + Send + Sync> SignedExtension2783 for ChargeTransactionPayment<T>2784where2785 BalanceOf<T>: Send + Sync + From<u64> + FixedPointOperand,2786 T::Call: Dispatchable<Info = DispatchInfo, PostInfo = PostDispatchInfo> + IsSubType<Call<T>> + IsSubType<pallet_contracts::Call<T>>,2787 T::AccountId: AsRef<[u8]>,2788 T::AccountId: UncheckedFrom<T::Hash>,2789{2790 const IDENTIFIER: &'static str = "ChargeTransactionPayment";2791 type AccountId = T::AccountId;2792 type Call = T::Call;2793 type AdditionalSigned = ();2794 type Pre = (2795 // tip2796 BalanceOf<T>,2797 // who pays fee2798 Self::AccountId,2799 // imbalance resulting from withdrawing the fee2800 <<T as pallet_transaction_payment::Config>::OnChargeTransaction as pallet_transaction_payment::OnChargeTransaction<T>>::LiquidityInfo,2801 );2802 fn additional_signed(&self) -> sp_std::result::Result<(), TransactionValidityError> {2803 Ok(())2804 }28052806 fn validate(2807 &self,2808 who: &Self::AccountId,2809 call: &Self::Call,2810 info: &DispatchInfoOf<Self::Call>,2811 len: usize,2812 ) -> TransactionValidity {2813 let (fee, _) = self.withdraw_fee(who, call, info, len)?;2814 Ok(ValidTransaction {2815 priority: Self::get_priority(len, info, fee),2816 ..Default::default()2817 })2818 }28192820 fn pre_dispatch(2821 self,2822 who: &Self::AccountId,2823 call: &Self::Call,2824 info: &DispatchInfoOf<Self::Call>,2825 len: usize,2826 ) -> Result<Self::Pre, TransactionValidityError> {2827 let (_fee, imbalance) = self.withdraw_fee(who, call, info, len)?;2828 Ok((self.0, who.clone(), imbalance))2829 }28302831 fn post_dispatch(2832 pre: Self::Pre,2833 info: &DispatchInfoOf<Self::Call>,2834 post_info: &PostDispatchInfoOf<Self::Call>,2835 len: usize,2836 _result: &DispatchResult,2837 ) -> Result<(), TransactionValidityError> {2838 let (tip, who, imbalance) = pre;2839 let actual_fee = pallet_transaction_payment::Module::<T>::compute_actual_fee(2840 len as u32,2841 info,2842 post_info,2843 tip,2844 );2845 <T as pallet_transaction_payment::Config>::OnChargeTransaction::correct_and_deposit_fee(&who, info, post_info, actual_fee, tip, imbalance)?;2846 Ok(())2847 }2848}28492850// #endregionruntime/src/lib.rsdiffbeforeafterboth--- a/runtime/src/lib.rs
+++ b/runtime/src/lib.rs
@@ -24,7 +24,7 @@
create_runtime_str, generic, impl_opaque_keys,
traits::{
Convert, ConvertInto, BlakeTwo256, Block as BlockT, IdentifyAccount,
- IdentityLookup, NumberFor, Verify,
+ IdentityLookup, NumberFor, Verify, AccountIdConversion,
},
transaction_validity::{TransactionSource, TransactionValidity},
ApplyExtrinsicResult, MultiSignature,
@@ -510,7 +510,6 @@
parameter_types! {
pub const MinVestedTransfer: Balance = 10 * UNIQUE;
- pub const CollectionCreationPrice: Balance = 100 * UNIQUE;
}
impl pallet_vesting::Config for Runtime {
@@ -521,11 +520,18 @@
type WeightInfo = ();
}
+parameter_types! {
+ pub TreasuryAccountId: AccountId = TreasuryModuleId::get().into_account();
+ pub const CollectionCreationPrice: Balance = 100 * UNIQUE;
+}
+
/// Used for the module nft in `./nft.rs`
impl pallet_nft::Config for Runtime {
type Event = Event;
type WeightInfo = nft_weights::WeightInfo;
+ type Currency = Balances;
type CollectionCreationPrice = CollectionCreationPrice;
+ type TreasuryAccountId = TreasuryAccountId;
}
construct_runtime!(