DecentralandMarketplaceEthereum

{{
  "language": "Solidity",
  "sources": {
    "src/marketplace/DecentralandMarketplaceEthereum.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;

import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

import {EIP712} from "src/common/EIP712.sol";
import {IComposable} from "src/marketplace/interfaces/IComposable.sol";
import {MarketplaceWithCouponManager} from "src/marketplace/MarketplaceWithCouponManager.sol";
import {DecentralandMarketplaceEthereumAssetTypes} from "src/marketplace/DecentralandMarketplaceEthereumAssetTypes.sol";
import {FeeCollector} from "src/marketplace/FeeCollector.sol";
import {IAggregator} from "src/marketplace/interfaces/IAggregator.sol";
import {AggregatorHelper} from "src/marketplace/AggregatorHelper.sol";

/// @notice Decentraland Marketplace contract for the Ethereum network assets. MANA, LAND, Estates, Names, etc.
contract DecentralandMarketplaceEthereum is
    DecentralandMarketplaceEthereumAssetTypes,
    MarketplaceWithCouponManager,
    FeeCollector,
    AggregatorHelper
{
    /// @notice The address of the MANA ERC20 contract.
    /// @dev This will be used when transferring USD pegged MANA by enforcing this address as the Asset's contract address.
    address public immutable manaAddress;

    /// @notice The MANA/ETH Chainlink aggregator.
    /// @dev Used to obtain the rate of MANA expressed in ETH.
    /// Used along the ethUsdAggregator to calculate the MANA/USD rate for determining the MANA amount of USD pegged MANA assets.
    IAggregator public manaEthAggregator;

    /// @notice Maximum time (in seconds) since the MANA/ETH aggregator result was last updated before it is considered outdated.
    uint256 public manaEthAggregatorTolerance;

    /// @notice The ETH/USD Chainlink aggregator.
    /// @dev Used to obtain the rate of ETH expressed in USD.
    IAggregator public ethUsdAggregator;

    /// @notice Maximum time (in seconds) since the ETH/USD aggregator result was last updated before it is considered outdated.
    uint256 public ethUsdAggregatorTolerance;

    event ManaEthAggregatorUpdated(address indexed _aggregator, uint256 _tolerance);
    event EthUsdAggregatorUpdated(address indexed _aggregator, uint256 _tolerance);

    error InvalidFingerprint();

    /// @param _owner The owner of the contract.
    /// @param _couponManager The address of the coupon manager contract.
    /// @param _feeCollector The address that will receive erc20 fees.
    /// @param _feeRate The rate of the fee. 25_000 is 2.5%
    /// @param _manaAddress The address of the MANA ERC20 contract.
    /// @param _manaEthAggregator The address of the MANA/ETH price aggregator.
    /// @param _manaEthAggregatorTolerance The tolerance (in seconds) that indicates if the result provided by the aggregator is old.
    /// @param _ethUsdAggregator The address of the ETH/USD price aggregator.
    /// @param _ethUsdAggregatorTolerance The tolerance (in seconds) that indicates if the result provided by the aggregator is old.
    constructor(
        address _owner,
        address _couponManager,
        address _feeCollector,
        uint256 _feeRate,
        address _manaAddress,
        address _manaEthAggregator,
        uint256 _manaEthAggregatorTolerance,
        address _ethUsdAggregator,
        uint256 _ethUsdAggregatorTolerance
    )
        FeeCollector(_feeCollector, _feeRate)
        EIP712("DecentralandMarketplaceEthereum", "1.0.0")
        Ownable(_owner)
        MarketplaceWithCouponManager(_couponManager)
    {
        manaAddress = _manaAddress;

        _updateManaEthAggregator(_manaEthAggregator, _manaEthAggregatorTolerance);
        _updateEthUsdAggregator(_ethUsdAggregator, _ethUsdAggregatorTolerance);
    }

    /// @notice Updates the fee collector address.
    /// @param _feeCollector The new fee collector address.
    function updateFeeCollector(address _feeCollector) external onlyOwner {
        _updateFeeCollector(_msgSender(), _feeCollector);
    }

    /// @notice Updates the fee rate.
    /// @param _feeRate The new fee rate.
    function updateFeeRate(uint256 _feeRate) external onlyOwner {
        _updateFeeRate(_msgSender(), _feeRate);
    }

    /// @notice Updates the MANA/ETH price aggregator and tolerance.
    /// @param _aggregator The new MANA/ETH price aggregator.
    /// @param _tolerance The new tolerance that indicates if the result provided by the aggregator is old.
    function updateManaEthAggregator(address _aggregator, uint256 _tolerance) external onlyOwner {
        _updateManaEthAggregator(_aggregator, _tolerance);
    }

    /// @notice Updates the ETH/USD price aggregator and tolerance.
    /// @param _aggregator The new ETH/USD price aggregator.
    /// @param _tolerance The new tolerance that indicates if the result provided by the aggregator is old.
    function updateEthUsdAggregator(address _aggregator, uint256 _tolerance) external onlyOwner {
        _updateEthUsdAggregator(_aggregator, _tolerance);
    }

    /// @dev Overridden Marketplace function to modify the trade before accepting it.
    function _modifyTrade(Trade memory _trade) internal pure override {
        /// This marketplace contract does not require to make any modifications to the Trade, so it remains empty.
    }

    /// @dev Overridden Marketplace function to transfer assets.
    /// Handles the transfer of ERC20 and ERC721 assets.
    function _transferAsset(Asset memory _asset, address _from, address, address) internal override {
        uint256 assetType = _asset.assetType;

        if (assetType == ASSET_TYPE_ERC20) {
            _transferERC20(_asset, _from);
        } else if (assetType == ASSET_TYPE_USD_PEGGED_MANA) {
            _transferUsdPeggedMana(_asset, _from);
        } else if (assetType == ASSET_TYPE_ERC721) {
            _transferERC721(_asset, _from);
        } else {
            revert UnsupportedAssetType(assetType);
        }
    }

    /// @dev Transfers ERC20 assets to the beneficiary.
    /// A part of the value is taken as a fee and transferred to the fee collector.
    function _transferERC20(Asset memory _asset, address _from) private {
        uint256 originalValue = _asset.value;
        uint256 fee = (originalValue * feeRate) / 1_000_000;

        IERC20 erc20 = IERC20(_asset.contractAddress);

        SafeERC20.safeTransferFrom(erc20, _from, _asset.beneficiary, originalValue - fee);
        SafeERC20.safeTransferFrom(erc20, _from, feeCollector, fee);
    }

    /// @dev Transfers MANA to the beneficiary depending to the provided value in USD defined in the asset.
    function _transferUsdPeggedMana(Asset memory _asset, address _from) private {
        // Obtains the price of MANA in ETH.
        int256 manaEthRate = _getRateFromAggregator(manaEthAggregator, manaEthAggregatorTolerance);

        // Obtains the price of ETH in USD.
        int256 ethUsdRate = _getRateFromAggregator(ethUsdAggregator, ethUsdAggregatorTolerance);

        // With the obtained rates, we can calculate the price of MANA in USD.
        int256 manaUsdRate = (manaEthRate * ethUsdRate) / 1e18;

        // Updates the asset with the new values.
        _updateAssetWithConvertedMANAPrice(_asset, manaAddress, manaUsdRate);

        // With the updated asset, we can perform a normal ERC20 transfer.
        _transferERC20(_asset, _from);
    }

    /// @dev Transfers ERC721 assets to the beneficiary.
    /// Takes into account Composable ERC721 contracts like Estates.
    function _transferERC721(Asset memory _asset, address _from) private {
        IComposable erc721 = IComposable(_asset.contractAddress);

        if (erc721.supportsInterface(erc721.verifyFingerprint.selector)) {
            // Uses the extra data provided in the asset as the fingerprint to be verified.
            if (!erc721.verifyFingerprint(_asset.value, _asset.extra)) {
                revert InvalidFingerprint();
            }
        }

        erc721.safeTransferFrom(_from, _asset.beneficiary, _asset.value);
    }

    /// @dev Updates the MANA/ETH price aggregator and tolerance.
    function _updateManaEthAggregator(address _aggregator, uint256 _tolerance) private {
        manaEthAggregator = IAggregator(_aggregator);
        manaEthAggregatorTolerance = _tolerance;

        emit ManaEthAggregatorUpdated(_aggregator, _tolerance);
    }

    /// @dev Updates the ETH/USD price aggregator and tolerance.
    function _updateEthUsdAggregator(address _aggregator, uint256 _tolerance) private {
        ethUsdAggregator = IAggregator(_aggregator);
        ethUsdAggregatorTolerance = _tolerance;

        emit EthUsdAggregatorUpdated(_aggregator, _tolerance);
    }
}
"
    },
    "lib/openzeppelin-contracts/contracts/access/Ownable.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

pragma solidity ^0.8.20;

import {Context} from "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * The initial owner is set to the address provided by the deployer. This can
 * later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}
"
    },
    "lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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);

    /**
     * @dev Returns the value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the value of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 value) 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 a `value` amount of tokens 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 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 value) external returns (bool);
}
"
    },
    "lib/openzeppelin-contracts/contracts/token/ERC20/utils/SafeERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";
import {IERC20Permit} from "../extensions/IERC20Permit.sol";
import {Address} from "../../../utils/Address.sol";

/**
 * @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;

    /**
     * @dev An operation with an ERC20 token failed.
     */
    error SafeERC20FailedOperation(address token);

    /**
     * @dev Indicates a failed `decreaseAllowance` request.
     */
    error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transferFrom, (from, to, value)));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        forceApprove(token, spender, oldAllowance + value);
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
     * value, non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
        unchecked {
            uint256 currentAllowance = token.allowance(address(this), spender);
            if (currentAllowance < requestedDecrease) {
                revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
            }
            forceApprove(token, spender, currentAllowance - requestedDecrease);
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value));

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0)));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @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);
        if (returndata.length != 0 && !abi.decode(returndata, (bool))) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @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).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        // 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 cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

        (bool success, bytes memory returndata) = address(token).call(data);
        return success && (returndata.length == 0 || abi.decode(returndata, (bool))) && address(token).code.length > 0;
    }
}
"
    },
    "src/common/EIP712.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/cryptography/EIP712.sol)

pragma solidity 0.8.20;

import {MessageHashUtils} from "@openzeppelin/contracts/utils/cryptography/MessageHashUtils.sol";
import {ShortStrings, ShortString} from "@openzeppelin/contracts/utils/ShortStrings.sol";

/**
 * @dev Modified implementation of OpenZeppelin's EIP712 to address specific requirements.
 *
 * The original implementation can be found at:
 * https://github.com/OpenZeppelin/openzeppelin-contracts/blob/dbb6104ce834628e473d2173bbc9d47f81a9eec3/contracts/utils/cryptography/EIP712.sol
 *
 * Changes from the OZ implementation include:
 * 1. The TYPE_HASH no longer includes the chain ID. This modification allows users to sign messages for a different
 *    blockchain than the one where the contract is deployed. To prevent replay attacks, the target chain ID is
 *    specified in the `salt` parameter. This approach enhances user experience by eliminating the need for users
 *    to switch chains just to sign messages.
 * 2. Removed the IERC5267 interface and the associated eip712Domain function. The reason for this removal is that
 *    the EIP712 domain structure in these contracts does not conform to the IERC5267 standard.
 *
 * All comments found underneath are from the original implementation.
 *
 * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
 *
 * The encoding scheme specified in the EIP requires a domain separator and a hash of the typed structured data, whose
 * encoding is very generic and therefore its implementation in Solidity is not feasible, thus this contract
 * does not implement the encoding itself. Protocols need to implement the type-specific encoding they need in order to
 * produce the hash of their typed data using a combination of `abi.encode` and `keccak256`.
 *
 * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
 * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
 * ({_hashTypedDataV4}).
 *
 * The implementation of the domain separator was designed to be as efficient as possible while still properly updating
 * the chain id to protect against replay attacks on an eventual fork of the chain.
 *
 * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
 * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
 *
 * NOTE: In the upgradeable version of this contract, the cached values will correspond to the address, and the domain
 * separator of the implementation contract. This will cause the {_domainSeparatorV4} function to always rebuild the
 * separator from the immutable values, which is cheaper than accessing a cached version in cold storage.
 *
 * @custom:oz-upgrades-unsafe-allow state-variable-immutable
 */
abstract contract EIP712 {
    using ShortStrings for *;

    /// keccak256("EIP712Domain(string name,string version,address verifyingContract,bytes32 salt)")
    bytes32 private constant TYPE_HASH = 0x36c25de3e541d5d970f66e4210d728721220fff5c077cc6cd008b3a0c62adab7;

    // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to
    // invalidate the cached domain separator if the chain id changes.
    bytes32 private immutable _cachedDomainSeparator;
    uint256 private immutable _cachedChainId;
    address private immutable _cachedThis;

    bytes32 private immutable _hashedName;
    bytes32 private immutable _hashedVersion;

    ShortString private immutable _name;
    ShortString private immutable _version;
    string private _nameFallback;
    string private _versionFallback;

    /**
     * @dev Initializes the domain separator and parameter caches.
     *
     * The meaning of `name` and `version` is specified in
     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
     *
     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
     * - `version`: the current major version of the signing domain.
     *
     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
     * contract upgrade].
     */
    constructor(string memory name, string memory version) {
        _name = name.toShortStringWithFallback(_nameFallback);
        _version = version.toShortStringWithFallback(_versionFallback);
        _hashedName = keccak256(bytes(name));
        _hashedVersion = keccak256(bytes(version));

        _cachedChainId = block.chainid;
        _cachedDomainSeparator = _buildDomainSeparator();
        _cachedThis = address(this);
    }

    /**
     * @dev Returns the domain separator for the current chain.
     */
    function _domainSeparatorV4() internal view returns (bytes32) {
        if (address(this) == _cachedThis && block.chainid == _cachedChainId) {
            return _cachedDomainSeparator;
        } else {
            return _buildDomainSeparator();
        }
    }

    function _buildDomainSeparator() private view returns (bytes32) {
        return keccak256(abi.encode(TYPE_HASH, _hashedName, _hashedVersion, address(this), block.chainid));
    }

    /**
     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
     * function returns the hash of the fully encoded EIP712 message for this domain.
     *
     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
     *
     * ```solidity
     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
     *     keccak256("Mail(address to,string contents)"),
     *     mailTo,
     *     keccak256(bytes(mailContents))
     * )));
     * address signer = ECDSA.recover(digest, signature);
     * ```
     */
    function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
        return MessageHashUtils.toTypedDataHash(_domainSeparatorV4(), structHash);
    }

    /**
     * @dev The name parameter for the EIP712 domain.
     *
     * NOTE: By default this function reads _name which is an immutable value.
     * It only reads from storage if necessary (in case the value is too large to fit in a ShortString).
     */
    // solhint-disable-next-line func-name-mixedcase
    function _EIP712Name() internal view returns (string memory) {
        return _name.toStringWithFallback(_nameFallback);
    }

    /**
     * @dev The version parameter for the EIP712 domain.
     *
     * NOTE: By default this function reads _version which is an immutable value.
     * It only reads from storage if necessary (in case the value is too large to fit in a ShortString).
     */
    // solhint-disable-next-line func-name-mixedcase
    function _EIP712Version() internal view returns (string memory) {
        return _version.toStringWithFallback(_versionFallback);
    }
}
"
    },
    "src/marketplace/interfaces/IComposable.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;

import {IERC721} from "@openzeppelin/contracts/interfaces/IERC721.sol";

/// @notice Interface for ERC721 Composable contracts.
interface IComposable is IERC721 {
    function verifyFingerprint(uint256 _estateId, bytes memory _fingerprint) external view returns (bool);

    function getFingerprint(uint256 _estateId) external view returns (bytes32);
}
"
    },
    "src/marketplace/MarketplaceWithCouponManager.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;

import {Marketplace} from "src/marketplace/Marketplace.sol";
import {ICouponManager} from "src/coupons/interfaces/ICouponManager.sol";
import {CouponTypes} from "src/coupons/CouponTypes.sol";

/// @notice Marketplace contract that also allows the use of coupons.
/// Coupons are a way to modify Trades before they are executed, like Discounts.
abstract contract MarketplaceWithCouponManager is Marketplace, CouponTypes {
    /// @notice The address of the CouponManager contract.
    ICouponManager public couponManager;

    event CouponManagerUpdated(address indexed _caller, address indexed _couponManager);

    constructor(address _couponManager) {
        _updateCouponManager(_couponManager);
    }

    /// @notice Accepts a list of Trades with the given Coupons.
    /// @param _trades The list of Trades to accept.
    /// @param _coupons The list of Coupons to apply to the Trades.
    function acceptWithCoupon(Trade[] calldata _trades, Coupon[] calldata _coupons) external whenNotPaused nonReentrant {
        address caller = _msgSender();

        for (uint256 i = 0; i < _trades.length; i++) {
            // It is important to verify the Trade before applying the coupons to avoid issues with the signature.
            _verifyTrade(_trades[i], caller);

            // Modify the Trade with the coupon and accept it normally.
            _accept(couponManager.applyCoupon(_trades[i], _coupons[i]), caller);
        }
    }

    /// @notice Updates the CouponManager address.
    /// @param _couponManager The new address of the CouponManager.
    function updateCouponManager(address _couponManager) external onlyOwner {
        _updateCouponManager(_couponManager);
    }

    function _updateCouponManager(address _couponManager) private {
        couponManager = ICouponManager(_couponManager);

        emit CouponManagerUpdated(_msgSender(), _couponManager);
    }
}
"
    },
    "src/marketplace/DecentralandMarketplaceEthereumAssetTypes.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;

/// @notice Asset types for the Decentraland Marketplace on Ethereum.
abstract contract DecentralandMarketplaceEthereumAssetTypes {
    uint256 public constant ASSET_TYPE_ERC20 = 1;
    uint256 public constant ASSET_TYPE_USD_PEGGED_MANA = 2;
    uint256 public constant ASSET_TYPE_ERC721 = 3;

    error UnsupportedAssetType(uint256 _assetType);
}
"
    },
    "src/marketplace/FeeCollector.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;

/// @notice Contract that abstracts the storage of the fee collector and fee rate used by Marketplace contracts.
abstract contract FeeCollector {
    /// @notice The address that will receive the fees.
    address public feeCollector;
    /// @notice The rate at which the fees will be charged. 25_000 is 2.5%
    uint256 public feeRate;

    event FeeCollectorUpdated(address indexed _caller, address indexed _feeCollector);
    event FeeRateUpdated(address indexed _caller, uint256 _feeRate);

    constructor(address _feeCollector, uint256 _feeRate) {
        _updateFeeCollector(msg.sender, _feeCollector);
        _updateFeeRate(msg.sender, _feeRate);
    }

    /// @dev Updates the fee collector address.
    /// @param _caller The address of the user updating the collector.
    /// @param _feeCollector The new address of the fee collector.
    function _updateFeeCollector(address _caller, address _feeCollector) internal {
        feeCollector = _feeCollector;

        emit FeeCollectorUpdated(_caller, _feeCollector);
    }

    /// @dev Updates the fee rate.
    /// @param _caller The address of the user updating the rate.
    /// @param _feeRate The new fee rate.
    function _updateFeeRate(address _caller, uint256 _feeRate) internal {
        feeRate = _feeRate;

        emit FeeRateUpdated(_caller, _feeRate);
    }
}
"
    },
    "src/marketplace/interfaces/IAggregator.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;

/// @notice Interface for Chainlink Aggregator contracts containing the methods used by the Marketplace contracts to obtain a rate.
interface IAggregator {
    /// @notice Returns the number of decimals used by the Aggregator.
    /// For example, MANA / ETH returns 18 decimals while ETH / USD returns 8 decimals.
    /// Required to normalize the rate.
    function decimals() external view returns (uint8);

    /// @notice Function that returns the most recent rate.
    /// The value currently used are "answer", containing the rate, and the "updatedAt" timestamp used to know if the value is not too old.
    function latestRoundData() external view returns (uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound);
}
"
    },
    "src/marketplace/AggregatorHelper.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;

import {IAggregator} from "src/marketplace/interfaces/IAggregator.sol";
import {MarketplaceTypes} from "src/marketplace/MarketplaceTypes.sol";

/// @notice Contract that provides helper functions to handle Chainlink Aggregator results and related operations.
contract AggregatorHelper {
    error AggregatorAnswerIsNegative();
    error AggregatorAnswerIsStale();

    /// @dev Used to obtain the rate from an aggregator.
    /// @param _aggregator The aggregator used to obtain the rate.
    /// @param _staleTolerance The tolerated amount of seconds since the last update of the rate.
    /// @return The rate obtained from the aggregator, normalized to 18 decimals.
    function _getRateFromAggregator(IAggregator _aggregator, uint256 _staleTolerance) internal view returns (int256) {
        // Obtains rate values from the aggregator.
        (, int256 rate,, uint256 updatedAt,) = _aggregator.latestRoundData();

        // If the rate is negative, reverts.
        // This should not happen with currency aggregators but it's a good practice to check.
        if (rate < 0) {
            revert AggregatorAnswerIsNegative();
        }

        // If the result provided by the aggregator is too old, reverts.
        if (updatedAt < (block.timestamp - _staleTolerance)) {
            revert AggregatorAnswerIsStale();
        }

        // Obtains the number of decimals the rate has been returned as from the aggregator.
        uint8 decimals = _aggregator.decimals();

        // Normalizes the rate to 18 decimals.
        rate = rate * int256(10 ** (18 - decimals));

        return rate;
    }

    /// @dev Uses the original value in USD of the asset and updates it to MANA using the provided rate.
    /// Also updates the contract address to the MANA address given that it is the asset that will be transferred.
    function _updateAssetWithConvertedMANAPrice(MarketplaceTypes.Asset memory _asset, address _manaAddress, int256 _manaUsdRate)
        internal
        pure
    {
        // Update the asset contract address to be MANA.
        _asset.contractAddress = _manaAddress;
        // Update the asset value to be the amount of MANA to be transferred.
        _asset.value = _asset.value * 1e18 / uint256(_manaUsdRate);
    }
}
"
    },
    "lib/openzeppelin-contracts/contracts/utils/Context.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;

/**
 * @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;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}
"
    },
    "lib/openzeppelin-contracts/contracts/token/ERC20/extensions/IERC20Permit.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 *
 * ==== Security Considerations
 *
 * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature
 * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be
 * considered as an intention to spend the allowance in any specific way. The second is that because permits have
 * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should
 * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be
 * generally recommended is:
 *
 * ```solidity
 * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {
 *     try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}
 *     doThing(..., value);
 * }
 *
 * function doThing(..., uint256 value) public {
 *     token.safeTransferFrom(msg.sender, address(this), value);
 *     ...
 * }
 * ```
 *
 * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of
 * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also
 * {SafeERC20-safeTransferFrom}).
 *
 * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so
 * contracts should have entry points that don't rely on permit.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     *
     * CAUTION: See Security Considerations above.
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}
"
    },
    "lib/openzeppelin-contracts/contracts/utils/Address.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Address.sol)

pragma solidity ^0.8.20;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev The ETH balance of the account is not enough to perform the operation.
     */
    error AddressInsufficientBalance(address account);

    /**
     * @dev There's no code at `target` (it is not a contract).
     */
    error AddressEmptyCode(address target);

    /**
     * @dev A call to an address target failed. The target may have reverted.
     */
    error FailedInnerCall();

    /**
     * @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://consensys.net/diligence/blog/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/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        if (address(this).balance < amount) {
            revert AddressInsufficientBalance(address(this));
        }

        (bool success, ) = recipient.call{value: amount}("");
        if (!success) {
            revert FailedInnerCall();
        }
    }

    /**
     * @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 or custom error, it is bubbled
     * up by this function (like regular Solidity function calls). However, if
     * the call reverted with no returned reason, this function reverts with a
     * {FailedInnerCall} error.
     *
     * 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.
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0);
    }

    /**
     * @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`.
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        if (address(this).balance < value) {
            revert AddressInsufficientBalance(address(this));
        }
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target
     * was not a contract or bubbling up the revert reason (falling back to {FailedInnerCall}) in case of an
     * unsuccessful call.
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata
    ) internal view returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            // only check if target is a contract if the call was successful and the return data is empty
            // otherwise we already know that it was a contract
            if (returndata.length == 0 && target.code.length == 0) {
                revert AddressEmptyCode(target);
            }
            return returndata;
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the
     * revert reason or with a default {FailedInnerCall} error.
     */
    function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            return returndata;
        }
    }

    /**
     * @dev Reverts with returndata if present. Otherwise reverts with {FailedInnerCall}.
     */
    function _revert(bytes memory returndata) private pure {
        // 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
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert FailedInnerCall();
        }
    }
}
"
    },
    "lib/openzeppelin-contracts/contracts/utils/cryptography/MessageHashUtils.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/cryptography/MessageHashUtils.sol)

pragma solidity ^0.8.20;

import {Strings} from "../Strings.sol";

/**
 * @dev Signature message hash utilities for producing digests to be consumed by {ECDSA} recovery or signing.
 *
 * The library provides methods for generating a hash of a message that conforms to the
 * https://eips.ethereum.org/EIPS/eip-191[EIP 191] and https://eips.ethereum.org/EIPS/eip-712[EIP 712]
 * specifications.
 */
library MessageHashUtils {
    /**
     * @dev Returns the keccak256 digest of an EIP-191 signed data with version
     * `0x45` (`personal_sign` messages).
     *
     * The digest is calculated by prefixing a bytes32 `messageHash` with
     * `"\x19Ethereum Signed Message:\
32"` and hashing the result. It corresponds with the
     * hash signed when using the https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] JSON-RPC method.
     *
     * NOTE: The `messageHash` parameter is intended to be the result of hashing a raw message with
     * keccak256, although any bytes32 value can be safely used because the final digest will
     * be re-hashed.
     *
     * See {ECDSA-recover}.
     */
    function toEthSignedMessageHash(bytes32 messageHash) internal pure returns (bytes32 digest) {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x00, "\x19Ethereum Signed Message:\
32") // 32 is the bytes-length of messageHash
            mstore(0x1c, messageHash) // 0x1c (28) is the length of the prefix
            digest := keccak256(0x00, 0x3c) // 0x3c is the length of the prefix (0x1c) + messageHash (0x20)
        }
    }

    /**
     * @dev Returns the keccak256 digest of an EIP-191 signed data with version
     * `0x45` (`personal_sign` messages).
     *
     * The digest is calculated by prefixing an arbitrary `message` with
     * `"\x19Ethereum Signed Message:\
" + len(message)` and hashing the result. It corresponds with the
     * hash signed when using the https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] JSON-RPC method.
     *
     * See {ECDSA-recover}.
     */
    function toEthSignedMessageHash(bytes memory message) internal pure returns (bytes32) {
        return
            keccak256(bytes.concat("\x19Ethereum Signed Message:\
", bytes(Strings.toString(message.length)), message));
    }

    /**
     * @dev Returns the keccak256 digest of an EIP-191 signed data with version
     * `0x00` (data with intended validator).
     *
     * The digest is calculated by prefixing an arbitrary `data` with `"\x19\x00"` and the intended
     * `validator` address. Then hashing the result.
     *
     * See {ECDSA-recover}.
     */
    function toDataWithIntendedValidatorHash(address validator, bytes memory data) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked(hex"19_00", validator, data));
    }

    /**
     * @dev Returns the keccak256 digest of an EIP-712 typed data (EIP-191 version `0x01`).
     *
     * The digest is calculated from a `domainSeparator` and a `structHash`, by prefixing them with
     * `\x19\x01` and hashing the result. It corresponds to the hash signed by the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] JSON-RPC method as part of EIP-712.
     *
     * See {ECDSA-recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32 digest) {
        /// @solidity memory-safe-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, hex"19_01")
            mstore(add(ptr, 0x02), domainSeparator)
            mstore(add(ptr, 0x22), structHash)
            digest := keccak256(ptr, 0x42)
        }
    }
}
"
    },
    "lib/openzeppelin-contracts/contracts/utils/ShortStrings.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/ShortStrings.sol)

pragma solidity ^0.8.20;

import {StorageSlot} from "./StorageSlot.sol";

// | string  | 0xAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA   |
// | length  | 0x                                                              BB |
type ShortString is bytes32;

/**
 * @dev This library provides functions to convert short memory strings
 * into a `ShortString` type that can be used as an immutable variable.
 *
 * Strings of arbitrary length can be optimized using this library if
 * they are short enough (up to 31 bytes) by packing them with their
 * length (1 byte) in a single EVM word (32 bytes). Additionally, a
 * fallback mechanism can be used for every other case.
 *
 * Usage example:
 *
 * ```solidity
 * contract Named {
 *     using ShortStrings for *;
 *
 *     ShortString private immutable _name;
 *     string private _nameFallback;
 *
 *     constructor(string memory contractName) {
 *         _name = contractName.toShortStringWithFallback(_nameFallback);
 *     }
 *
 *     function name() external view returns (string memory) {
 *         return _name.toStringWithFallback(_nameFallback);
 *     }
 * }
 * ```
 */
library ShortStrings {
    // Used as an identifier for strings longer than 31 bytes.
    bytes32 private constant FALLBACK_SENTINEL = 0x00000000000000000000000000000000000000000000000000000000000000FF;

    error StringTooLong(string str);
    error InvalidShortString();

    /**
     * @dev Encode a string of at most 31 chars into a `ShortString`.
     *
     * This will trigger a `StringTooLong` error is the input string is too long.
     */
    function toShortString(string memory str) internal pure returns (ShortString) {
        bytes memory bstr = bytes(str);
        if (bstr.length > 31) {
            revert StringTooLong(str);
        }
        return ShortString.wrap(bytes32(uint256(bytes32(bstr)) | bstr.length));
    }

    /**
     * @dev Decode a `ShortString` back to a "normal" string.
     */
    function toString(ShortString sstr) internal pure returns (string memory) {
        uint256 len = byteLength(sstr);
        // using `new string(len)` would work locally but is not memory safe.
        string memory str = new string(32);
        /// @solidity memory-safe-assembly
        assembly {
            mstore(str, len)
            mstore(add(str, 0x20), sstr)
        }
        return str;
    }

    /**
     * @dev Return the length of a `ShortString`.
     */
    function byteLength(ShortString sstr) internal pure returns (uint256) {
        uint256 result = uint256(ShortString.unwrap(sstr)) & 0xFF;
        if (result > 31) {
            revert InvalidShortString();
        }
        return result;
    }

    /**
     * @dev Encode a string into a `ShortString`, or write it to storage if it is too long.
     */
    function toShortStringWithFallback(string memory value, string storage store) internal returns (ShortString) {
        if (bytes(value).length < 32) {
            return toShortString(value);
        } else {
            StorageSlot.getStringSlot(store).value = value;
            return ShortString.wrap(FALLBACK_SENTINEL);
        }
    }

    /**
     * @dev Decode a string that was encoded to `ShortString` or written to storage using {setWithFallback}.
     */
    function toStringWithFallback(ShortString value, string storage store) internal pure returns (string memory) {
        if (ShortString.unwrap(value) != FALLBACK_SENTINEL) {
            return toString(value);
        } else {
            return store;
        }
    }

    /**
     * @dev Return the length of a string that was encoded to `ShortString` or written to storage using
     * {setWithFallback}.
     *
     * WARNING: This will return the "byte length" of the string. This may not reflect the actual length in terms of
     * actual characters as the UTF-8 encoding of a single character can span over multiple bytes.
     */
    function byteLengthWithFallback(ShortString value, string storage store) internal view returns (uint256) {
        if (ShortString.unwrap(value) != FALLBACK_SENTINEL) {
            return byteLength(value);
        } else {
            return bytes(store).length;
        }
    }
}
"
    },
    "lib/openzeppelin-contracts/contracts/interfaces/IERC721.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC721.sol)

pragma solidity ^0.8.20;

import {IERC721} from "../token/ERC721/IERC721.sol";
"
    },
    "src/marketplace/Marketplace.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;

import {Pausable} from "@openzeppelin/contracts/utils/Pausable.sol";
import {ReentrancyGuard} from "@openzeppelin/contracts/utils/ReentrancyGuard.sol";

import {Verifications} from "src/common/Verifications.sol";
import {MarketplaceTypesHashing} from "src/marketplace/MarketplaceTypesHashing.sol";

/// @notice Main Marketplace abstract contract that contains the logic to validate and accept Trades.
abstract contract Marketplace is Verifications, MarketplaceTypesHashing, Pausable, ReentrancyGuard {
    /// @notice Trade ids that have been already used.
    /// Trade ids are composed by hashing:
    /// Salt + Caller + Received Assets (Contract Address + Value)
    mapping(bytes32 => bool) public usedTradeIds;

    /// @dev The event is emitted with the hashed signature so it can be identified off chain.
    event Traded(address indexed _caller, bytes32 indexed _signature, Trade _trade);

    error UsedTradeId();

    /// @notice Pauses the contract so no new trades can be accepted.
    function pause() external onlyOwner {
        _pause();
    }

    /// @notice Unpauses the contract to resume normal operations.
    function unpause() external onlyOwner {
        _unpause();
    }

    /// @notice Revokes the signatures of all provided trades.
    /// The caller must be the signer of those trades.
    /// @param _trades The list of trade signatures to be canceled.
    function cancelSignature(Trade[] calldata _trades) external {
        address caller = _msgSender();
        for (uint256 i = 0; i < _trades.length; i++) {
            Trade calldata trade = _trades[i];

            _cancelSignature(keccak256(trade.signature), caller);
        }
    }

    /// @notice Accept a list of Trades.
    /// @param _trades The list of Trades to accept.
    function accept(Trade[] calldata _trades) external whenNotPaused nonReentrant {
        address caller = _msgSender();

        for (uint256 i = 0; i < _trades.length; i++) {
            _verifyTrade(_trades[i], caller);

            _accept(_trades[i], caller);
        }
    }

    /// @notice Returns the trade id for a given Trade.
    /// @param _trade The Trade to get the id from.
    /// @param _caller The address that called the contract.
    ///
    /// @dev The trade id is composed of hashing the following values:
    /// Salt + Caller + Received Assets (Contract Address + Value)
    function getTradeId(Trade calldata _trade, address _caller) public pure returns (bytes32) {
        bytes32 tradeId = keccak256(abi.encodePacked(_trade.checks.salt, _caller));

        for (uint256 i = 0; i < _trade.received.length; i++) {
            Asset calldata asset = _trade.received[i];

            tradeId = keccak256(abi.encodePacked(tradeId, asset.contractAddress, asset.value));
        }

        return tradeId;
    }

    /// @dev Accepts a Trade.
    /// This function is internal to allow child contracts to use it in their own accept function.
    /// Does not perform any checks, only transfers the assets and emits the Traded event.
    function _accept(Trade memory _trade, address _caller) internal {
        _modifyTrade(_trade);

        bytes32 hashedSignature = keccak256(_trade.signature);
        address signer = _trade.signer;

        _transferAssets(_trade.sent, signer, _caller, signer, _caller);
        _transferAssets(_trade.received, _caller, signer, signer, _caller);

        emit Traded(_caller, hashedSignature, _trade);
    }

    /// @dev Verifies that the Trade passes all checks and the signature is valid.
    function _verifyTrade(Trade calldata _trade, address _caller) internal {
        bytes32 hashedSignature = keccak256(_trade.signature);
        address signer = _trade.signer;
        bytes32 tradeId = getTradeId(_trade, _caller);
        bytes32 hashedSignatureWithSigner = keccak256(abi.encode(signer, hashedSignature));
        uint256 currentSignatureUses = signatureUses[hashedSignatureWithSigner];

        if (usedTradeIds[tradeId]) {
            revert UsedTradeId();
        }

        _verifyChecks(_trade.checks, hashedSignatureWithSigner, currentSignatureUses, signer, _caller);
        _verifyTradeSignature(_trade, signer);

        if (currentSignatureUses + 1 == _trade.checks.uses) {
            usedTradeIds[tradeId] = true;
        }

        signatureUses[hashedSignatureWithSigner]++;
    }

    /// @dev Verifies that the Trade signature is valid.
    function _verifyTradeSignature(Trade calldata _trade, address _signer) private view {
        _verifySignature(_hashTrade(_trade), _trade.signature, _signer);
    }

    /// @dev Transfers all the provided assets using the overridden _transferAsset function.
    /// Updates all the asset beneficiaries to the provided _to address in case the original beneficiary is the 0 address.
    function _transferAssets(Asset[] memory _assets, address _from, address _to, address _signer, address _caller) private {
        for (uint256 i = 0; i < _assets.length; i++) {
            Asset memory asset = _assets[i];

            if (asset.beneficiary == address(0)) {
                asset.beneficiary = _to;
            }

            _transferAsset(asset, _from, _signer, _caller);
        }
    }

    /// @dev Allows the child contract to update the Trade before accepting it.
    function _modifyTrade(Trade memory _trade) internal view virtual;

    /// @dev Allows the child contract to handle the transfer of assets.
    function _transferAsset(Asset memory _asset, address _from, address _signer, address _caller) internal virtual;
}
"
    },
    "src/coupons/interfaces/ICouponManager.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;

import {CouponTypes} from "src/coupons/CouponTypes.sol";
import {MarketplaceTypes} from "src/marketplace/MarketplaceTypes.sol";

/// @notice Interface for the Coupon Manager contract.
interface ICouponManager {
    function applyCoupon(MarketplaceTypes.Trade calldata _trade, CouponTypes.Coupon calldata _coupon) external returns (MarketplaceTypes.Trade memory);
}
"
    },
    "src/coupons/CouponTypes.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;

import {CommonTypes} from "src/common/CommonTypes.sol";

/// @notice Types used by the Coupons.
abstract contract CouponTypes is CommonTypes {
    /// @notice Schema for the Coupon type.
    /// @param signature Signature of the coupon.
    /// @param checks Values to be verified before applying the coupon.
    /// @param couponAddress Address of the Coupon contract to be used.
    /// @param data Data to be used by the Coupon contract.
    /// @param callerData Data sent by the caller to be used by the Coupon contract.
    struct Coupon {
        bytes signature;
        Checks checks;
        address couponAddress;
        bytes data;
        bytes callerData;
    }
}
"
    },
    "src/marketplace/MarketplaceTypes.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;

import {CommonTypes} from "src/common/CommonTypes.sol";

/// @notice Types used by the Marketplace.
abstract contract MarketplaceTypes is CommonTypes {
    /// @notice Schema for the Asset type.
    /// This represents any kind of asset that will be traded.
    /// @param assetType Type of the asset. Used to know how to handle it.
    /// @param contractAddress Address of the contract of the asset.
    /// @param value Value of the asset. The amount for ERC20s, the ID for ERC721s, etc.
    /// @param beneficiary Address that will receive the asset. If empty, depending if the asset is sent or received, the beneficiary will be the signer or the caller.
    /// In the case of sent assets, the beneficiary is not validated in the signature. This is to allow the caller to determine which address will receive the asset.
    /// @param extra Extra data that can be used to store additional information. 
    struct Asset {
        uint256 assetType;
        address contractAddress;
        uint256 value;
        address beneficiary;
        bytes extra;
    }

    /// @notice Schema for the Trade type.
    /// This represents a signed Trade that indicates the terms of the Trade, as well as the assets involved.