Contract Source Code:
File 1 of 1 : Registry
// SPDX-License-Identifier: MIT
pragma solidity 0.8.7;
// Part: IRegistry
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interface IRegistry {
event Lend(
bool is721,
address indexed lenderAddress,
address indexed nftAddress,
uint256 indexed tokenID,
uint256 lendingID,
uint8 maxRentDuration,
bytes4 dailyRentPrice,
uint16 lendAmount,
IResolver.PaymentToken paymentToken
);
event Rent(
address indexed renterAddress,
uint256 indexed lendingID,
uint256 indexed rentingID,
uint16 rentAmount,
uint8 rentDuration,
uint32 rentedAt
);
event StopLend(uint256 indexed lendingID, uint32 stoppedAt);
event StopRent(uint256 indexed rentingID, uint32 stoppedAt);
event RentClaimed(uint256 indexed rentingID, uint32 collectedAt);
enum NFTStandard {
E721,
E1155
}
struct CallData {
uint256 left;
uint256 right;
IRegistry.NFTStandard[] nftStandard;
address[] nftAddress;
uint256[] tokenID;
uint256[] lendAmount;
uint8[] maxRentDuration;
bytes4[] dailyRentPrice;
uint256[] lendingID;
uint256[] rentingID;
uint8[] rentDuration;
uint256[] rentAmount;
IResolver.PaymentToken[] paymentToken;
}
// 2, 162, 170, 202, 218, 234, 242
struct Lending {
NFTStandard nftStandard;
address payable lenderAddress;
uint8 maxRentDuration;
bytes4 dailyRentPrice;
uint16 lendAmount;
uint16 availableAmount;
IResolver.PaymentToken paymentToken;
}
// 180, 212
struct Renting {
address payable renterAddress;
uint8 rentDuration;
uint32 rentedAt;
uint16 rentAmount;
}
// creates the lending structs and adds them to the enumerable set
function lend(
IRegistry.NFTStandard[] memory nftStandard,
address[] memory nftAddress,
uint256[] memory tokenID,
uint256[] memory lendAmount,
uint8[] memory maxRentDuration,
bytes4[] memory dailyRentPrice,
IResolver.PaymentToken[] memory paymentToken
) external;
function stopLend(
IRegistry.NFTStandard[] memory nftStandard,
address[] memory nftAddress,
uint256[] memory tokenID,
uint256[] memory lendingID
) external;
// // creates the renting structs and adds them to the enumerable set
function rent(
IRegistry.NFTStandard[] memory nftStandard,
address[] memory nftAddress,
uint256[] memory tokenID,
uint256[] memory lendingID,
uint8[] memory rentDuration,
uint256[] memory rentAmount
) external payable;
function stopRent(
IRegistry.NFTStandard[] memory nftStandard,
address[] memory nftAddress,
uint256[] memory tokenID,
uint256[] memory lendingID,
uint256[] memory rentingID
) external;
function claimRent(
IRegistry.NFTStandard[] memory nftStandard,
address[] memory nftAddress,
uint256[] memory tokenID,
uint256[] memory lendingID,
uint256[] memory rentingID
) external;
}
// Part: IResolver
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interface IResolver {
enum PaymentToken {
SENTINEL,
DAI,
USDC,
TUSD
}
function getPaymentToken(uint8 _pt) external view returns (address);
function setPaymentToken(uint8 _pt, address _v) external;
}
// Part: OpenZeppelin/[email protected]/Address
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// Part: OpenZeppelin/[email protected]/Context
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// Part: OpenZeppelin/[email protected]/IERC165
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// Part: OpenZeppelin/[email protected]/IERC20
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// Part: OpenZeppelin/[email protected]/IERC721Receiver
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// Part: OpenZeppelin/[email protected]/ERC165
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/
abstract contract ERC165 is IERC165 {
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}
// Part: OpenZeppelin/[email protected]/ERC721Holder
/**
* @dev Implementation of the {IERC721Receiver} interface.
*
* Accepts all token transfers.
* Make sure the contract is able to use its token with {IERC721-safeTransferFrom}, {IERC721-approve} or {IERC721-setApprovalForAll}.
*/
contract ERC721Holder is IERC721Receiver {
/**
* @dev See {IERC721Receiver-onERC721Received}.
*
* Always returns `IERC721Receiver.onERC721Received.selector`.
*/
function onERC721Received(
address,
address,
uint256,
bytes memory
) public virtual override returns (bytes4) {
return this.onERC721Received.selector;
}
}
// Part: OpenZeppelin/[email protected]/IERC1155
/**
* @dev Required interface of an ERC1155 compliant contract, as defined in the
* https://eips.ethereum.org/EIPS/eip-1155[EIP].
*
* _Available since v3.1._
*/
interface IERC1155 is IERC165 {
/**
* @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.
*/
event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value);
/**
* @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all
* transfers.
*/
event TransferBatch(
address indexed operator,
address indexed from,
address indexed to,
uint256[] ids,
uint256[] values
);
/**
* @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to
* `approved`.
*/
event ApprovalForAll(address indexed account, address indexed operator, bool approved);
/**
* @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI.
*
* If an {URI} event was emitted for `id`, the standard
* https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value
* returned by {IERC1155MetadataURI-uri}.
*/
event URI(string value, uint256 indexed id);
/**
* @dev Returns the amount of tokens of token type `id` owned by `account`.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function balanceOf(address account, uint256 id) external view returns (uint256);
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}.
*
* Requirements:
*
* - `accounts` and `ids` must have the same length.
*/
function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids)
external
view
returns (uint256[] memory);
/**
* @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`,
*
* Emits an {ApprovalForAll} event.
*
* Requirements:
*
* - `operator` cannot be the caller.
*/
function setApprovalForAll(address operator, bool approved) external;
/**
* @dev Returns true if `operator` is approved to transfer ``account``'s tokens.
*
* See {setApprovalForAll}.
*/
function isApprovedForAll(address account, address operator) external view returns (bool);
/**
* @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
*
* Emits a {TransferSingle} event.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - If the caller is not `from`, it must be have been approved to spend ``from``'s tokens via {setApprovalForAll}.
* - `from` must have a balance of tokens of type `id` of at least `amount`.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
* acceptance magic value.
*/
function safeTransferFrom(
address from,
address to,
uint256 id,
uint256 amount,
bytes calldata data
) external;
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}.
*
* Emits a {TransferBatch} event.
*
* Requirements:
*
* - `ids` and `amounts` must have the same length.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
* acceptance magic value.
*/
function safeBatchTransferFrom(
address from,
address to,
uint256[] calldata ids,
uint256[] calldata amounts,
bytes calldata data
) external;
}
// Part: OpenZeppelin/[email protected]/IERC1155Receiver
/**
* @dev _Available since v3.1._
*/
interface IERC1155Receiver is IERC165 {
/**
@dev Handles the receipt of a single ERC1155 token type. This function is
called at the end of a `safeTransferFrom` after the balance has been updated.
To accept the transfer, this must return
`bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))`
(i.e. 0xf23a6e61, or its own function selector).
@param operator The address which initiated the transfer (i.e. msg.sender)
@param from The address which previously owned the token
@param id The ID of the token being transferred
@param value The amount of tokens being transferred
@param data Additional data with no specified format
@return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` if transfer is allowed
*/
function onERC1155Received(
address operator,
address from,
uint256 id,
uint256 value,
bytes calldata data
) external returns (bytes4);
/**
@dev Handles the receipt of a multiple ERC1155 token types. This function
is called at the end of a `safeBatchTransferFrom` after the balances have
been updated. To accept the transfer(s), this must return
`bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))`
(i.e. 0xbc197c81, or its own function selector).
@param operator The address which initiated the batch transfer (i.e. msg.sender)
@param from The address which previously owned the token
@param ids An array containing ids of each token being transferred (order and length must match values array)
@param values An array containing amounts of each token being transferred (order and length must match ids array)
@param data Additional data with no specified format
@return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` if transfer is allowed
*/
function onERC1155BatchReceived(
address operator,
address from,
uint256[] calldata ids,
uint256[] calldata values,
bytes calldata data
) external returns (bytes4);
}
// Part: OpenZeppelin/[email protected]/IERC20Metadata
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}
// Part: OpenZeppelin/[email protected]/IERC721
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
}
// Part: OpenZeppelin/[email protected]/SafeERC20
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using Address for address;
function safeTransfer(
IERC20 token,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(
IERC20 token,
address from,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(
IERC20 token,
address spender,
uint256 value
) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
uint256 newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
uint256 newAllowance = oldAllowance - value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) {
// Return data is optional
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// Part: OpenZeppelin/[email protected]/ERC1155Receiver
/**
* @dev _Available since v3.1._
*/
abstract contract ERC1155Receiver is ERC165, IERC1155Receiver {
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return interfaceId == type(IERC1155Receiver).interfaceId || super.supportsInterface(interfaceId);
}
}
// Part: OpenZeppelin/[email protected]/ERC20
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20, IERC20Metadata {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
// Part: OpenZeppelin/[email protected]/ERC1155Holder
/**
* @dev _Available since v3.1._
*/
contract ERC1155Holder is ERC1155Receiver {
function onERC1155Received(
address,
address,
uint256,
uint256,
bytes memory
) public virtual override returns (bytes4) {
return this.onERC1155Received.selector;
}
function onERC1155BatchReceived(
address,
address,
uint256[] memory,
uint256[] memory,
bytes memory
) public virtual override returns (bytes4) {
return this.onERC1155BatchReceived.selector;
}
}
// File: Registry.sol
// @@@@@@@@@@@@@@@@ ,@@@@@@@@@@@@@@@@
// @@@,,,,,,,,,,@@@ ,@@&,,,,,,,,,,@@@
// @@@@@@@@,,,,,,,,,,@@@@@@@@& ,@@&,,,,,,,,,,@@@@@@@@
// @@@**********@@@@@@@@@@@@@& ,@@@@@@@@**********@@@
// @@@**********@@@@@@@@@@@@@& ,@@@@@@@@**********@@@@@@@@
// @@@**********@@@@@@@@@@@@@& .@@@**********@@@@@@@@
// @@@@@@@@**********@@@@@@@@@@@@@& .@@@**********@@@@@@@@
// @@@**********@@@@@@@@@@@@@& .@@@@@@@@**********@@@
// @@@**********@@@@@@@@@@@@@& .@@@@@@@@**********@@@@@@@@
// @@@@@@@@**********@@@@@@@@& .@@@**********@@@@@@@@@@@@@
// @@@@@@@@//////////@@@@@@@@& .@@@//////////@@@@@@@@@@@@@
// @@@//////////@@@@@@@@& .@@@//////////@@@@@@@@@@@@@
// @@@//////////@@@@@@@@& ,@@@@@@@@//////////@@@@@@@@@@@@@
// @@@%%%%%/////(((((@@@& ,@@@(((((/////%%%%%@@@@@@@@
// @@@@@@@@//////////@@@@@@@@& ,@@@//////////@@@@@@@@@@@@@
// @@@%%%%%%%%%%@@@@@@@@& ,@@@%%%%%%%%%%@@@@@@@@@@@@@
// @@@@@@@@@@@@@@@@@@@@@& ,@@@@@@@@@@@@@@@@@@@@@@@@@@
// @@@@@@@@@@@@@@@@& @@@@@@@@@@@@@@@@
// @@@@@@@@@@@@@@@@& @@@@@@@@@@@@@@@@
contract Registry is IRegistry, ERC721Holder, ERC1155Receiver, ERC1155Holder {
using SafeERC20 for ERC20;
IResolver private resolver;
address private admin;
address payable private beneficiary;
uint256 private lendingID = 1;
uint256 private rentingID = 1;
bool public paused = false;
uint256 public rentFee = 0;
uint256 private constant SECONDS_IN_DAY = 86400;
mapping(bytes32 => Lending) private lendings;
mapping(bytes32 => Renting) private rentings;
modifier onlyAdmin() {
require(msg.sender == admin, "ReNFT::not admin");
_;
}
modifier notPaused() {
require(!paused, "ReNFT::paused");
_;
}
constructor(
address newResolver,
address payable newBeneficiary,
address newAdmin
) {
ensureIsNotZeroAddr(newResolver);
ensureIsNotZeroAddr(newBeneficiary);
ensureIsNotZeroAddr(newAdmin);
resolver = IResolver(newResolver);
beneficiary = newBeneficiary;
admin = newAdmin;
}
function lend(
IRegistry.NFTStandard[] memory nftStandard,
address[] memory nftAddress,
uint256[] memory tokenID,
uint256[] memory lendAmount,
uint8[] memory maxRentDuration,
bytes4[] memory dailyRentPrice,
IResolver.PaymentToken[] memory paymentToken
) external override notPaused {
bundleCall(
handleLend,
createLendCallData(
nftStandard,
nftAddress,
tokenID,
lendAmount,
maxRentDuration,
dailyRentPrice,
paymentToken
)
);
}
function stopLend(
IRegistry.NFTStandard[] memory nftStandard,
address[] memory nftAddress,
uint256[] memory tokenID,
uint256[] memory _lendingID
) external override notPaused {
bundleCall(
handleStopLend,
createActionCallData(
nftStandard,
nftAddress,
tokenID,
_lendingID,
new uint256[](0)
)
);
}
function rent(
IRegistry.NFTStandard[] memory nftStandard,
address[] memory nftAddress,
uint256[] memory tokenID,
uint256[] memory _lendingID,
uint8[] memory rentDuration,
uint256[] memory rentAmount
) external payable override notPaused {
bundleCall(
handleRent,
createRentCallData(
nftStandard,
nftAddress,
tokenID,
_lendingID,
rentDuration,
rentAmount
)
);
}
function stopRent(
IRegistry.NFTStandard[] memory nftStandard,
address[] memory nftAddress,
uint256[] memory tokenID,
uint256[] memory _lendingID,
uint256[] memory _rentingID
) external override notPaused {
bundleCall(
handleStopRent,
createActionCallData(
nftStandard,
nftAddress,
tokenID,
_lendingID,
_rentingID
)
);
}
function claimRent(
IRegistry.NFTStandard[] memory nftStandard,
address[] memory nftAddress,
uint256[] memory tokenID,
uint256[] memory _lendingID,
uint256[] memory _rentingID
) external override notPaused {
bundleCall(
handleClaimRent,
createActionCallData(
nftStandard,
nftAddress,
tokenID,
_lendingID,
_rentingID
)
);
}
// .-. .-. .-. .-. .-. .-. .-. .-. .-. .-.
// `._.' `._.' `._.' `._.' `._.' `._.' `._.' `._.' `._.' `._.' `._.'
function handleLend(IRegistry.CallData memory cd) private {
for (uint256 i = cd.left; i < cd.right; i++) {
ensureIsLendable(cd, i);
bytes32 identifier = keccak256(
abi.encodePacked(
cd.nftAddress[cd.left],
cd.tokenID[i],
lendingID
)
);
IRegistry.Lending storage lending = lendings[identifier];
ensureIsNull(lending);
ensureTokenNotSentinel(uint8(cd.paymentToken[i]));
bool is721 = cd.nftStandard[i] == IRegistry.NFTStandard.E721;
lendings[identifier] = IRegistry.Lending({
nftStandard: cd.nftStandard[i],
lenderAddress: payable(msg.sender),
maxRentDuration: cd.maxRentDuration[i],
dailyRentPrice: cd.dailyRentPrice[i],
lendAmount: is721 ? 1 : uint16(cd.lendAmount[i]),
availableAmount: is721 ? 1 : uint16(cd.lendAmount[i]),
paymentToken: cd.paymentToken[i]
});
emit IRegistry.Lend(
is721,
msg.sender,
cd.nftAddress[cd.left],
cd.tokenID[i],
lendingID,
cd.maxRentDuration[i],
cd.dailyRentPrice[i],
is721 ? 1 : uint16(cd.lendAmount[i]),
cd.paymentToken[i]
);
lendingID++;
}
safeTransfer(
cd,
msg.sender,
address(this),
sliceArr(cd.tokenID, cd.left, cd.right, 0),
sliceArr(cd.lendAmount, cd.left, cd.right, 0)
);
}
function handleStopLend(IRegistry.CallData memory cd) private {
uint256[] memory lentAmounts = new uint256[](cd.right - cd.left);
for (uint256 i = cd.left; i < cd.right; i++) {
bytes32 lendingIdentifier = keccak256(
abi.encodePacked(
cd.nftAddress[cd.left],
cd.tokenID[i],
cd.lendingID[i]
)
);
Lending storage lending = lendings[lendingIdentifier];
ensureIsNotNull(lending);
ensureIsStoppable(lending, msg.sender);
require(
cd.nftStandard[i] == lending.nftStandard,
"ReNFT::invalid nft standard"
);
require(
lending.lendAmount == lending.availableAmount,
"ReNFT::actively rented"
);
lentAmounts[i - cd.left] = lending.lendAmount;
emit IRegistry.StopLend(cd.lendingID[i], uint32(block.timestamp));
delete lendings[lendingIdentifier];
}
safeTransfer(
cd,
address(this),
msg.sender,
sliceArr(cd.tokenID, cd.left, cd.right, 0),
sliceArr(lentAmounts, cd.left, cd.right, cd.left)
);
}
function handleRent(IRegistry.CallData memory cd) private {
for (uint256 i = cd.left; i < cd.right; i++) {
bytes32 lendingIdentifier = keccak256(
abi.encodePacked(
cd.nftAddress[cd.left],
cd.tokenID[i],
cd.lendingID[i]
)
);
bytes32 rentingIdentifier = keccak256(
abi.encodePacked(
cd.nftAddress[cd.left],
cd.tokenID[i],
rentingID
)
);
IRegistry.Lending storage lending = lendings[lendingIdentifier];
IRegistry.Renting storage renting = rentings[rentingIdentifier];
ensureIsNotNull(lending);
ensureIsNull(renting);
ensureIsRentable(lending, cd, i, msg.sender);
require(
cd.nftStandard[i] == lending.nftStandard,
"ReNFT::invalid nft standard"
);
require(
cd.rentAmount[i] <= lending.availableAmount,
"ReNFT::invalid rent amount"
);
uint8 paymentTokenIx = uint8(lending.paymentToken);
address paymentToken = resolver.getPaymentToken(paymentTokenIx);
uint256 decimals = ERC20(paymentToken).decimals();
{
uint256 scale = 10**decimals;
uint256 rentPrice = cd.rentAmount[i] *
cd.rentDuration[i] *
unpackPrice(lending.dailyRentPrice, scale);
require(rentPrice > 0, "ReNFT::rent price is zero");
ERC20(paymentToken).safeTransferFrom(
msg.sender,
address(this),
rentPrice
);
}
rentings[rentingIdentifier] = IRegistry.Renting({
renterAddress: payable(msg.sender),
rentAmount: uint16(cd.rentAmount[i]),
rentDuration: cd.rentDuration[i],
rentedAt: uint32(block.timestamp)
});
lendings[lendingIdentifier].availableAmount -= uint16(
cd.rentAmount[i]
);
emit IRegistry.Rent(
msg.sender,
cd.lendingID[i],
rentingID,
uint16(cd.rentAmount[i]),
cd.rentDuration[i],
renting.rentedAt
);
rentingID++;
}
}
function handleStopRent(IRegistry.CallData memory cd) private {
for (uint256 i = cd.left; i < cd.right; i++) {
bytes32 lendingIdentifier = keccak256(
abi.encodePacked(
cd.nftAddress[cd.left],
cd.tokenID[i],
cd.lendingID[i]
)
);
bytes32 rentingIdentifier = keccak256(
abi.encodePacked(
cd.nftAddress[cd.left],
cd.tokenID[i],
cd.rentingID[i]
)
);
IRegistry.Lending storage lending = lendings[lendingIdentifier];
IRegistry.Renting storage renting = rentings[rentingIdentifier];
ensureIsNotNull(lending);
ensureIsNotNull(renting);
ensureIsReturnable(renting, msg.sender, block.timestamp);
require(
cd.nftStandard[i] == lending.nftStandard,
"ReNFT::invalid nft standard"
);
require(
renting.rentAmount <= lending.lendAmount,
"ReNFT::critical error"
);
uint256 secondsSinceRentStart = block.timestamp - renting.rentedAt;
distributePayments(lending, renting, secondsSinceRentStart);
lendings[lendingIdentifier].availableAmount += renting.rentAmount;
emit IRegistry.StopRent(cd.rentingID[i], uint32(block.timestamp));
delete rentings[rentingIdentifier];
}
}
function handleClaimRent(CallData memory cd) private {
for (uint256 i = cd.left; i < cd.right; i++) {
bytes32 lendingIdentifier = keccak256(
abi.encodePacked(
cd.nftAddress[cd.left],
cd.tokenID[i],
cd.lendingID[i]
)
);
bytes32 rentingIdentifier = keccak256(
abi.encodePacked(
cd.nftAddress[cd.left],
cd.tokenID[i],
cd.rentingID[i]
)
);
IRegistry.Lending storage lending = lendings[lendingIdentifier];
IRegistry.Renting storage renting = rentings[rentingIdentifier];
ensureIsNotNull(lending);
ensureIsNotNull(renting);
ensureIsClaimable(renting, block.timestamp);
distributeClaimPayment(lending, renting);
lending.availableAmount += renting.rentAmount;
emit IRegistry.RentClaimed(
cd.rentingID[i],
uint32(block.timestamp)
);
delete rentings[rentingIdentifier];
}
}
// .-. .-. .-. .-. .-. .-. .-. .-. .-. .-.
// `._.' `._.' `._.' `._.' `._.' `._.' `._.' `._.' `._.' `._.' `._.'
function bundleCall(
function(IRegistry.CallData memory) handler,
IRegistry.CallData memory cd
) private {
require(cd.nftAddress.length > 0, "ReNFT::no nfts");
while (cd.right != cd.nftAddress.length) {
if (
(cd.nftAddress[cd.left] == cd.nftAddress[cd.right]) &&
(cd.nftStandard[cd.right] == IRegistry.NFTStandard.E1155)
) {
cd.right++;
} else {
handler(cd);
cd.left = cd.right;
cd.right++;
}
}
handler(cd);
}
function takeFee(uint256 rentAmt, IResolver.PaymentToken paymentToken)
private
returns (uint256 fee)
{
fee = rentAmt * rentFee;
fee /= 10000;
uint8 paymentTokenIx = uint8(paymentToken);
ERC20 pmtToken = ERC20(resolver.getPaymentToken(paymentTokenIx));
pmtToken.safeTransfer(beneficiary, fee);
}
function distributePayments(
IRegistry.Lending memory lending,
IRegistry.Renting memory renting,
uint256 secondsSinceRentStart
) private {
uint8 paymentTokenIx = uint8(lending.paymentToken);
address pmtToken = resolver.getPaymentToken(paymentTokenIx);
uint256 decimals = ERC20(pmtToken).decimals();
uint256 scale = 10**decimals;
uint256 rentPrice = renting.rentAmount *
unpackPrice(lending.dailyRentPrice, scale);
uint256 totalRenterPmt = rentPrice * renting.rentDuration;
uint256 sendLenderAmt = (secondsSinceRentStart * rentPrice) /
SECONDS_IN_DAY;
require(totalRenterPmt > 0, "ReNFT::total renter payment is zero");
require(sendLenderAmt > 0, "ReNFT::lender payment is zero");
uint256 sendRenterAmt = totalRenterPmt - sendLenderAmt;
if (rentFee != 0) {
uint256 takenFee = takeFee(sendLenderAmt, lending.paymentToken);
sendLenderAmt -= takenFee;
}
ERC20(pmtToken).safeTransfer(lending.lenderAddress, sendLenderAmt);
if (sendRenterAmt > 0) {
ERC20(pmtToken).safeTransfer(renting.renterAddress, sendRenterAmt);
}
}
function distributeClaimPayment(
IRegistry.Lending memory lending,
IRegistry.Renting memory renting
) private {
uint8 paymentTokenIx = uint8(lending.paymentToken);
ERC20 paymentToken = ERC20(resolver.getPaymentToken(paymentTokenIx));
uint256 decimals = ERC20(paymentToken).decimals();
uint256 scale = 10**decimals;
uint256 rentPrice = renting.rentAmount *
unpackPrice(lending.dailyRentPrice, scale);
uint256 finalAmt = rentPrice * renting.rentDuration;
uint256 takenFee = 0;
if (rentFee != 0) {
takenFee = takeFee(
finalAmt,
IResolver.PaymentToken(paymentTokenIx)
);
}
paymentToken.safeTransfer(lending.lenderAddress, finalAmt - takenFee);
}
function safeTransfer(
CallData memory cd,
address from,
address to,
uint256[] memory tokenID,
uint256[] memory lendAmount
) private {
if (cd.nftStandard[cd.left] == IRegistry.NFTStandard.E721) {
IERC721(cd.nftAddress[cd.left]).transferFrom(
from,
to,
cd.tokenID[cd.left]
);
} else {
IERC1155(cd.nftAddress[cd.left]).safeBatchTransferFrom(
from,
to,
tokenID,
lendAmount,
""
);
}
}
// .-. .-. .-. .-. .-. .-. .-. .-. .-. .-.
// `._.' `._.' `._.' `._.' `._.' `._.' `._.' `._.' `._.' `._.' `._.'
function getLending(
address nftAddress,
uint256 tokenID,
uint256 _lendingID
)
external
view
returns (
uint8,
address,
uint8,
bytes4,
uint16,
uint16,
uint8
)
{
bytes32 identifier = keccak256(
abi.encodePacked(nftAddress, tokenID, _lendingID)
);
IRegistry.Lending storage lending = lendings[identifier];
return (
uint8(lending.nftStandard),
lending.lenderAddress,
lending.maxRentDuration,
lending.dailyRentPrice,
lending.lendAmount,
lending.availableAmount,
uint8(lending.paymentToken)
);
}
function getRenting(
address nftAddress,
uint256 tokenID,
uint256 _rentingID
)
external
view
returns (
address,
uint16,
uint8,
uint32
)
{
bytes32 identifier = keccak256(
abi.encodePacked(nftAddress, tokenID, _rentingID)
);
IRegistry.Renting storage renting = rentings[identifier];
return (
renting.renterAddress,
renting.rentAmount,
renting.rentDuration,
renting.rentedAt
);
}
// .-. .-. .-. .-. .-. .-. .-. .-. .-. .-.
// `._.' `._.' `._.' `._.' `._.' `._.' `._.' `._.' `._.' `._.' `._.'
function createLendCallData(
IRegistry.NFTStandard[] memory nftStandard,
address[] memory nftAddress,
uint256[] memory tokenID,
uint256[] memory lendAmount,
uint8[] memory maxRentDuration,
bytes4[] memory dailyRentPrice,
IResolver.PaymentToken[] memory paymentToken
) private pure returns (CallData memory cd) {
cd = CallData({
left: 0,
right: 1,
nftStandard: nftStandard,
nftAddress: nftAddress,
tokenID: tokenID,
lendAmount: lendAmount,
lendingID: new uint256[](0),
rentingID: new uint256[](0),
rentDuration: new uint8[](0),
rentAmount: new uint256[](0),
maxRentDuration: maxRentDuration,
dailyRentPrice: dailyRentPrice,
paymentToken: paymentToken
});
}
function createRentCallData(
IRegistry.NFTStandard[] memory nftStandard,
address[] memory nftAddress,
uint256[] memory tokenID,
uint256[] memory _lendingID,
uint8[] memory rentDuration,
uint256[] memory rentAmount
) private pure returns (CallData memory cd) {
cd = CallData({
left: 0,
right: 1,
nftStandard: nftStandard,
nftAddress: nftAddress,
tokenID: tokenID,
lendAmount: new uint256[](0),
lendingID: _lendingID,
rentingID: new uint256[](0),
rentDuration: rentDuration,
rentAmount: rentAmount,
maxRentDuration: new uint8[](0),
dailyRentPrice: new bytes4[](0),
paymentToken: new IResolver.PaymentToken[](0)
});
}
function createActionCallData(
IRegistry.NFTStandard[] memory nftStandard,
address[] memory nftAddress,
uint256[] memory tokenID,
uint256[] memory _lendingID,
uint256[] memory _rentingID
) private pure returns (CallData memory cd) {
cd = CallData({
left: 0,
right: 1,
nftStandard: nftStandard,
nftAddress: nftAddress,
tokenID: tokenID,
lendAmount: new uint256[](0),
lendingID: _lendingID,
rentingID: _rentingID,
rentDuration: new uint8[](0),
rentAmount: new uint256[](0),
maxRentDuration: new uint8[](0),
dailyRentPrice: new bytes4[](0),
paymentToken: new IResolver.PaymentToken[](0)
});
}
function unpackPrice(bytes4 price, uint256 scale)
private
pure
returns (uint256)
{
ensureIsUnpackablePrice(price, scale);
uint16 whole = uint16(bytes2(price));
uint16 decimal = uint16(bytes2(price << 16));
uint256 decimalScale = scale / 10000;
if (whole > 9999) {
whole = 9999;
}
if (decimal > 9999) {
decimal = 9999;
}
uint256 w = whole * scale;
uint256 d = decimal * decimalScale;
uint256 fullPrice = w + d;
return fullPrice;
}
function sliceArr(
uint256[] memory arr,
uint256 fromIx,
uint256 toIx,
uint256 arrOffset
) private pure returns (uint256[] memory r) {
r = new uint256[](toIx - fromIx);
for (uint256 i = fromIx; i < toIx; i++) {
r[i - fromIx] = arr[i - arrOffset];
}
}
// .-. .-. .-. .-. .-. .-. .-. .-. .-. .-.
// `._.' `._.' `._.' `._.' `._.' `._.' `._.' `._.' `._.' `._.' `._.'
function ensureIsNotZeroAddr(address addr) private pure {
require(addr != address(0), "ReNFT::zero address");
}
function ensureIsZeroAddr(address addr) private pure {
require(addr == address(0), "ReNFT::not a zero address");
}
function ensureIsNull(Lending memory lending) private pure {
ensureIsZeroAddr(lending.lenderAddress);
require(lending.maxRentDuration == 0, "ReNFT::duration not zero");
require(lending.dailyRentPrice == 0, "ReNFT::rent price not zero");
}
function ensureIsNotNull(Lending memory lending) private pure {
ensureIsNotZeroAddr(lending.lenderAddress);
require(lending.maxRentDuration != 0, "ReNFT::duration zero");
require(lending.dailyRentPrice != 0, "ReNFT::rent price is zero");
}
function ensureIsNull(Renting memory renting) private pure {
ensureIsZeroAddr(renting.renterAddress);
require(renting.rentDuration == 0, "ReNFT::duration not zero");
require(renting.rentedAt == 0, "ReNFT::rented at not zero");
}
function ensureIsNotNull(Renting memory renting) private pure {
ensureIsNotZeroAddr(renting.renterAddress);
require(renting.rentDuration != 0, "ReNFT::duration is zero");
require(renting.rentedAt != 0, "ReNFT::rented at is zero");
}
function ensureIsLendable(CallData memory cd, uint256 i) private pure {
require(cd.lendAmount[i] > 0, "ReNFT::lend amount is zero");
require(cd.lendAmount[i] <= type(uint16).max, "ReNFT::not uint16");
require(cd.maxRentDuration[i] > 0, "ReNFT::duration is zero");
require(cd.maxRentDuration[i] <= type(uint8).max, "ReNFT::not uint8");
require(uint32(cd.dailyRentPrice[i]) > 0, "ReNFT::rent price is zero");
}
function ensureIsRentable(
Lending memory lending,
CallData memory cd,
uint256 i,
address msgSender
) private pure {
require(msgSender != lending.lenderAddress, "ReNFT::cant rent own nft");
require(cd.rentDuration[i] <= type(uint8).max, "ReNFT::not uint8");
require(cd.rentDuration[i] > 0, "ReNFT::duration is zero");
require(cd.rentAmount[i] <= type(uint16).max, "ReNFT::not uint16");
require(cd.rentAmount[i] > 0, "ReNFT::rentAmount is zero");
require(
cd.rentDuration[i] <= lending.maxRentDuration,
"ReNFT::rent duration exceeds allowed max"
);
}
function ensureIsReturnable(
Renting memory renting,
address msgSender,
uint256 blockTimestamp
) private pure {
require(renting.renterAddress == msgSender, "ReNFT::not renter");
require(
!isPastReturnDate(renting, blockTimestamp),
"ReNFT::past return date"
);
}
function ensureIsStoppable(Lending memory lending, address msgSender)
private
pure
{
require(lending.lenderAddress == msgSender, "ReNFT::not lender");
}
function ensureIsUnpackablePrice(bytes4 price, uint256 scale) private pure {
require(uint32(price) > 0, "ReNFT::invalid price");
require(scale >= 10000, "ReNFT::invalid scale");
}
function ensureTokenNotSentinel(uint8 paymentIx) private pure {
require(paymentIx > 0, "ReNFT::token is sentinel");
}
function ensureIsClaimable(
IRegistry.Renting memory renting,
uint256 blockTimestamp
) private pure {
require(
isPastReturnDate(renting, blockTimestamp),
"ReNFT::return date not passed"
);
}
function isPastReturnDate(Renting memory renting, uint256 nowTime)
private
pure
returns (bool)
{
require(nowTime > renting.rentedAt, "ReNFT::now before rented");
return
nowTime - renting.rentedAt > renting.rentDuration * SECONDS_IN_DAY;
}
// .-. .-. .-. .-. .-. .-. .-. .-. .-. .-.
// `._.' `._.' `._.' `._.' `._.' `._.' `._.' `._.' `._.' `._.' `._.'
function setRentFee(uint256 newRentFee) external onlyAdmin {
require(newRentFee < 10000, "ReNFT::fee exceeds 100pct");
rentFee = newRentFee;
}
function setBeneficiary(address payable newBeneficiary) external onlyAdmin {
beneficiary = newBeneficiary;
}
function setPaused(bool newPaused) external onlyAdmin {
paused = newPaused;
}
}