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- Contract name:
- RentRegistry
- Optimization enabled
- true
- Compiler version
- v0.8.17+commit.8df45f5f
- Optimization runs
- 200
- EVM Version
- london
- Verified at
- 2024-09-05T07:38:37.437692Z
Constructor Arguments
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
Arg [0] (address) : 0x9f59adf8ca58d0ffd9372af68d747c3dbb4cb02f
Arg [1] (address) : 0x9ab18990c9035f7878a59e134bce5d618cb19d55
Arg [2] (address) : 0xea6a031bbaf2eadb5ecfd32b8aa39e9a95659e46
Arg [3] (address[]) : [0x99ebd96615a50933c69b435f8a59539caff95d7c, 0x750449925085a335b58b6706e0cf17039caa606f]
Arg [4] (uint256[]) : [500, 700]
project:/contracts/rent/RentRegistry.sol
// SPDX-License-Identifier: PROPRIERTARY
// For development, we used some code from open source with an MIT license
// https://github.com/re-nft/legacy-contracts
pragma solidity =0.8.17;
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "@openzeppelin/contracts/token/ERC721/utils/ERC721Holder.sol";
import "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
import "@openzeppelin/contracts/token/ERC1155/utils/ERC1155Holder.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "./interfaces/IRentResolver.sol";
import "./interfaces/IRentRegistry.sol";
import "../utils/GuardExtension.sol";
error Paused();
error AlreadyRented();
error RentNotCompleted();
error RentAlreadyCompleted();
error LendingNotExists();
error RentingNotExists();
error LendingAlreadyExists();
error RentingAlreadyExists();
error AssertionError();
error NothingToPay();
error LenderRequired();
error RenterRequired();
error InvalidInput(bytes32 parameter);
error SameValue();
contract RentRegistry is
IRentRegistry,
ERC721Holder,
ERC1155Holder,
GuardExtension,
ReentrancyGuard
{
using SafeERC20 for ERC20;
bytes1 private constant DOMAIN_SEPARATOR_LENDING_ID = 0x01;
bytes1 private constant DOMAIN_SEPARATOR_RENTING_ID = 0x02;
IRentResolver private _resolver;
address private _beneficiary;
uint256 private _lendingID = 1;
uint256 private _rentingID = 1;
bool public _paused = false;
mapping(address => uint256) private _rentFee;
mapping(bytes32 => Lending) private _lendings;
mapping(bytes32 => Renting) private _rentings;
modifier notPaused() {
if (_paused) {
revert Paused();
}
_;
}
constructor(
address resolver_,
address beneficiary_,
address rights_,
address[] memory feeTokens_,
uint256[] memory feePercents_
) GuardExtension(rights_) ReentrancyGuard() {
if (feeTokens_.length != feePercents_.length) {
revert InvalidInput("feeTokens_");
}
ensureIsNotZeroAddr(resolver_);
ensureIsNotZeroAddr(beneficiary_);
ensureIsNotZeroAddr(rights_);
_resolver = IRentResolver(resolver_);
_beneficiary = beneficiary_;
for (uint256 i = 0; i < feeTokens_.length; ++i) {
ensureIsNotZeroAddr(feeTokens_[i]);
_setRentFee(feeTokens_[i], feePercents_[i]);
}
}
function lend(
NFTStandard[] memory nftStandard_,
address[] memory nftAddress_,
uint256[] memory tokenId_,
uint256[] memory lendAmount_,
uint8[] memory maxRentDuration_,
bytes4[] memory dailyRentPrice_,
uint8[] memory paymentToken_,
bool[] memory willAutoRenew_
) external override notPaused nonReentrant {
bundleCall(
handleLend,
createLendCallData(
nftStandard_,
nftAddress_,
tokenId_,
lendAmount_,
maxRentDuration_,
dailyRentPrice_,
paymentToken_,
willAutoRenew_
)
);
}
function stopLend(
NFTStandard[] memory nftStandard_,
address[] memory nftAddress_,
uint256[] memory tokenId_,
uint256[] memory lendingId_
) external override notPaused nonReentrant {
bundleCall(
handleStopLend,
createActionCallData(
nftStandard_,
nftAddress_,
tokenId_,
lendingId_,
new uint256[](0)
)
);
}
/**
* @param nftStandard_ NFT standart (0 - ERC721, 1 - ERC1155)
* @param nftAddress_ NFT contract address
* @param tokenId_ NFT token Id
* @param lendingId_ The landing Id
* @param rentDuration_ Rent duration in days
* @param rentAmount_ Token amount (for ERC721 always 1)
*/
function rent(
NFTStandard[] memory nftStandard_,
address[] memory nftAddress_,
uint256[] memory tokenId_,
uint256[] memory lendingId_,
uint8[] memory rentDuration_,
uint256[] memory rentAmount_
) external override notPaused nonReentrant {
bundleCall(
handleRent,
createRentCallData(
nftStandard_,
nftAddress_,
tokenId_,
lendingId_,
rentDuration_,
rentAmount_
)
);
}
function stopRent(
NFTStandard[] memory nftStandard_,
address[] memory nftAddress_,
uint256[] memory tokenId_,
uint256[] memory lendingId_,
uint256[] memory rentingId_
) external override notPaused nonReentrant {
bundleCall(
handleStopRent,
createActionCallData(
nftStandard_,
nftAddress_,
tokenId_,
lendingId_,
rentingId_
)
);
}
function claimRent(
NFTStandard[] memory nftStandard_,
address[] memory nftAddress_,
uint256[] memory tokenId_,
uint256[] memory lendingId_,
uint256[] memory rentingId_
) external override notPaused nonReentrant {
bundleCall(
handleClaimRent,
createActionCallData(
nftStandard_,
nftAddress_,
tokenId_,
lendingId_,
rentingId_
)
);
}
function handleLend(CallData memory cd_) private {
for (uint256 i = cd_.left; i < cd_.right; i++) {
ensureIsLendable(cd_, i);
bytes32 identifier = getLendingId(
cd_.nftAddress[cd_.left],
cd_.tokenID[i],
_lendingID
);
Lending storage lending = _lendings[identifier];
ensureIsNull(lending);
ensureTokenNotSentinel(uint8(cd_.paymentToken[i]));
bool is721 = cd_.nftStandard[i] == NFTStandard.E721;
uint16 _lendAmount = uint16(cd_.lendAmount[i]);
if (is721 && _lendAmount != 1) {
revert InvalidInput("_lendAmount");
}
_lendings[identifier] = Lending({
nftStandard: cd_.nftStandard[i],
lenderAddress: msg.sender,
maxRentDuration: cd_.maxRentDuration[i],
dailyRentPrice: cd_.dailyRentPrice[i],
lendAmount: _lendAmount,
availableAmount: _lendAmount,
paymentToken: cd_.paymentToken[i],
willAutoRenew: cd_.willAutoRenew[i]
});
emit Lend(
is721,
msg.sender,
cd_.nftAddress[cd_.left],
cd_.tokenID[i],
_lendingID,
cd_.maxRentDuration[i],
cd_.dailyRentPrice[i],
_lendAmount,
cd_.paymentToken[i],
cd_.willAutoRenew[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(CallData memory cd_) private {
uint256[] memory lentAmounts = new uint256[](cd_.right - cd_.left);
for (uint256 i = cd_.left; i < cd_.right; i++) {
bytes32 lendingIdentifier = getLendingId(
cd_.nftAddress[cd_.left],
cd_.tokenID[i],
cd_.lendingID[i]
);
Lending storage lending = _lendings[lendingIdentifier];
ensureIsNotNull(lending);
ensureIsStoppable(lending, msg.sender);
if (cd_.nftStandard[i] != lending.nftStandard) {
revert InvalidInput("nftStandard");
}
if (lending.lendAmount != lending.availableAmount) {
revert AlreadyRented();
}
lentAmounts[i - cd_.left] = lending.lendAmount;
emit StopLend(
cd_.lendingID[i],
uint32(block.timestamp),
lending.lendAmount
);
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(CallData memory cd_) private {
for (uint256 i = cd_.left; i < cd_.right; i++) {
bytes32 lendingIdentifier = getLendingId(
cd_.nftAddress[cd_.left],
cd_.tokenID[i],
cd_.lendingID[i]
);
bytes32 rentingIdentifier = getRentingId(
cd_.nftAddress[cd_.left],
cd_.tokenID[i],
_rentingID
);
Lending storage lending = _lendings[lendingIdentifier];
Renting storage renting = _rentings[rentingIdentifier];
ensureIsNotNull(lending);
ensureIsNull(renting);
ensureIsRentable(lending, cd_, i, msg.sender);
if (cd_.nftStandard[i] != lending.nftStandard) {
revert InvalidInput("nftStandard");
}
if (cd_.rentAmount[i] > lending.availableAmount) {
revert InvalidInput("rentAmount");
}
uint8 paymentTokenIx = uint8(lending.paymentToken);
ERC20 paymentToken = ERC20(
_resolver.getPaymentToken(paymentTokenIx)
);
uint256 decimals = paymentToken.decimals();
{
uint256 scale = 10 ** decimals;
uint256 rentPrice = cd_.rentAmount[i] *
cd_.rentDuration[i] *
unpackPrice(lending.dailyRentPrice, scale);
if (rentPrice == 0) {
revert InvalidInput("rentDuration");
}
paymentToken.safeTransferFrom(
msg.sender,
address(this),
rentPrice
);
}
_rentings[rentingIdentifier] = Renting({
renterAddress: msg.sender,
rentAmount: uint16(cd_.rentAmount[i]),
rentDuration: cd_.rentDuration[i],
rentedAt: uint32(block.timestamp)
});
_lendings[lendingIdentifier].availableAmount -= uint16(
cd_.rentAmount[i]
);
emit Rent(
msg.sender,
cd_.lendingID[i],
_rentingID,
uint16(cd_.rentAmount[i]),
cd_.rentDuration[i],
renting.rentedAt
);
_rentingID++;
}
}
function handleStopRent(CallData memory cd_) private {
for (uint256 i = cd_.left; i < cd_.right; i++) {
bytes32 lendingIdentifier = getLendingId(
cd_.nftAddress[cd_.left],
cd_.tokenID[i],
cd_.lendingID[i]
);
bytes32 rentingIdentifier = getRentingId(
cd_.nftAddress[cd_.left],
cd_.tokenID[i],
cd_.rentingID[i]
);
Lending storage lending = _lendings[lendingIdentifier];
Renting memory renting = _rentings[rentingIdentifier];
// Remove renting to avoid reentry attack
delete _rentings[rentingIdentifier];
ensureIsNotNull(lending);
ensureIsNotNull(renting);
ensureIsReturnable(renting, msg.sender, block.timestamp);
if (cd_.nftStandard[i] != lending.nftStandard) {
revert InvalidInput("nftStandard");
}
if (renting.rentAmount > lending.lendAmount) {
revert AssertionError();
}
uint256 secondsSinceRentStart = block.timestamp - renting.rentedAt;
(
uint256 sendRenterAmt,
uint256 sendLenderAmt,
uint256 fee
) = distributePayments(lending, renting, secondsSinceRentStart);
manageWillAutoRenew(
lending,
renting,
cd_.nftAddress[cd_.left],
cd_.nftStandard[cd_.left],
cd_.tokenID[i],
cd_.lendingID[i]
);
emit StopRent(
cd_.rentingID[i],
sendRenterAmt,
sendLenderAmt,
fee,
uint32(block.timestamp)
);
}
}
function handleClaimRent(CallData memory cd_) private {
for (uint256 i = cd_.left; i < cd_.right; i++) {
bytes32 lendingIdentifier = getLendingId(
cd_.nftAddress[cd_.left],
cd_.tokenID[i],
cd_.lendingID[i]
);
bytes32 rentingIdentifier = getRentingId(
cd_.nftAddress[cd_.left],
cd_.tokenID[i],
cd_.rentingID[i]
);
Lending storage lending = _lendings[lendingIdentifier];
Renting memory renting = _rentings[rentingIdentifier];
// Remove renting to avoid reentry attack
delete _rentings[rentingIdentifier];
ensureIsNotNull(lending);
ensureIsNotNull(renting);
ensureIsClaimable(renting, block.timestamp);
(uint256 amount, uint256 fee) = distributeClaimPayment(
lending,
renting
);
manageWillAutoRenew(
lending,
renting,
cd_.nftAddress[cd_.left],
cd_.nftStandard[cd_.left],
cd_.tokenID[i],
cd_.lendingID[i]
);
emit RentClaimed(
cd_.rentingID[i],
amount,
fee,
uint32(block.timestamp)
);
}
}
function manageWillAutoRenew(
Lending storage lending_,
Renting memory renting_,
address nftAddress_,
NFTStandard nftStandard_,
uint256 tokenId_,
uint256 lendingId_
) private {
if (lending_.willAutoRenew == false) {
// No automatic renewal, stop the lending (or a portion of it) completely!
// We must be careful here, because the lending might be for an ERC1155 token, which means
// that the renting.rentAmount might not be the same as the lending.lendAmount. In this case, we
// must NOT delete the lending, but only decrement the lending.lendAmount by the renting.rentAmount.
// Notice: this is only possible for an ERC1155 tokens!
if (lending_.lendAmount > renting_.rentAmount) {
// update lending lendAmount to reflect NOT renewing the lending
// Do not update lending.availableAmount, because the assets will not be lent out again
lending_.lendAmount -= renting_.rentAmount;
// return the assets to the lender
IERC1155(nftAddress_).safeTransferFrom(
address(this),
lending_.lenderAddress,
tokenId_,
uint256(renting_.rentAmount),
""
);
}
// If the lending is for an ERC721 token, then the renting.rentAmount is always the same as the
// lending.lendAmount, and we can delete the lending. If the lending is for an ERC1155 token and
// the renting.rentAmount is the same as the lending.lendAmount, then we can also delete the
// lending.
else if (lending_.lendAmount == renting_.rentAmount) {
// return the assets to the lender
if (nftStandard_ == NFTStandard.E721) {
IERC721(nftAddress_).safeTransferFrom(
address(this),
lending_.lenderAddress,
tokenId_
);
} else {
IERC1155(nftAddress_).safeTransferFrom(
address(this),
lending_.lenderAddress,
tokenId_,
uint256(renting_.rentAmount),
""
);
}
delete _lendings[
getLendingId(nftAddress_, tokenId_, lendingId_)
];
}
// StopLend event but only the amount that was not renewed (or all of it)
emit StopLend(
lendingId_,
uint32(block.timestamp),
renting_.rentAmount
);
} else {
// automatic renewal, make the assets available to be lent out again
lending_.availableAmount += renting_.rentAmount;
}
}
function bundleCall(
function(CallData memory) handler_,
CallData memory cd_
) private {
if (cd_.nftAddress.length == 0) {
revert InvalidInput("bundle");
}
while (cd_.right != cd_.nftAddress.length) {
if (
(cd_.nftAddress[cd_.left] == cd_.nftAddress[cd_.right]) &&
(cd_.nftStandard[cd_.right] == NFTStandard.E1155)
) {
cd_.right++;
} else {
handler_(cd_);
cd_.left = cd_.right;
cd_.right++;
}
}
handler_(cd_);
}
function takeFee(
uint256 rentAmount_,
ERC20 token_
) private returns (uint256 fee) {
uint256 feePercent = _rentFee[address(token_)];
if (feePercent > 0) {
fee = rentAmount_ * feePercent;
fee /= 10000;
token_.safeTransfer(_beneficiary, fee);
} else {
fee = 0;
}
}
function distributePayments(
Lending memory lending_,
Renting memory renting_,
uint256 secondsSinceRentStart
)
private
returns (uint256 sendRenterAmt, uint256 sendLenderAmt, uint256 takenFee)
{
uint8 paymentTokenIx = uint8(lending_.paymentToken);
ERC20 paymentToken = ERC20(_resolver.getPaymentToken(paymentTokenIx));
uint256 decimals = paymentToken.decimals();
uint256 scale = 10 ** decimals;
uint256 rentPrice = renting_.rentAmount *
unpackPrice(lending_.dailyRentPrice, scale);
uint256 totalRenterPmt = rentPrice * renting_.rentDuration;
sendLenderAmt = (secondsSinceRentStart * rentPrice) / 1 days;
if (totalRenterPmt == 0 || sendLenderAmt == 0) {
revert NothingToPay();
}
sendRenterAmt = totalRenterPmt - sendLenderAmt;
takenFee = takeFee(sendLenderAmt, paymentToken);
sendLenderAmt -= takenFee;
paymentToken.safeTransfer(lending_.lenderAddress, sendLenderAmt);
if (sendRenterAmt > 0) {
paymentToken.safeTransfer(renting_.renterAddress, sendRenterAmt);
}
}
function distributeClaimPayment(
Lending memory lending_,
Renting memory renting_
) private returns (uint256 amount, uint256 fee) {
uint8 paymentTokenIx = uint8(lending_.paymentToken);
ERC20 paymentToken = ERC20(_resolver.getPaymentToken(paymentTokenIx));
uint256 decimals = paymentToken.decimals();
uint256 scale = 10 ** decimals;
uint256 rentPrice = renting_.rentAmount *
unpackPrice(lending_.dailyRentPrice, scale);
uint256 fullAmount = rentPrice * renting_.rentDuration;
fee = takeFee(fullAmount, paymentToken);
amount = fullAmount - fee;
paymentToken.safeTransfer(lending_.lenderAddress, amount);
}
function safeTransfer(
CallData memory cd_,
address from_,
address to_,
uint256[] memory tokenId_,
uint256[] memory lendAmount_
) private {
if (cd_.nftStandard[cd_.left] == NFTStandard.E721) {
IERC721(cd_.nftAddress[cd_.left]).safeTransferFrom(
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 (Lending memory lending) {
lending = _lendings[getLendingId(nftAddress_, tokenId_, lendingId_)];
}
function getRenting(
address nftAddress_,
uint256 tokenId_,
uint256 rentingId_
) external view returns (Renting memory renting) {
renting = _rentings[getRentingId(nftAddress_, tokenId_, rentingId_)];
}
function createLendCallData(
NFTStandard[] memory nftStandard_,
address[] memory nftAddress_,
uint256[] memory tokenId_,
uint256[] memory lendAmount_,
uint8[] memory maxRentDuration_,
bytes4[] memory dailyRentPrice_,
uint8[] memory paymentToken_,
bool[] memory willAutoRenew_
) 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_,
willAutoRenew: willAutoRenew_
});
}
function createRentCallData(
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 uint8[](0),
willAutoRenew: new bool[](0)
});
}
function createActionCallData(
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 uint8[](0),
willAutoRenew: new bool[](0)
});
}
function unpackPrice(
bytes4 price_,
uint256 scale_
) private pure returns (uint256 fullPrice) {
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;
fullPrice = w + d;
}
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 {
if (addr_ == address(0)) {
revert InvalidInput("address");
}
}
function ensureIsNull(Lending memory lending_) private pure {
if (
lending_.lenderAddress != address(0) ||
lending_.maxRentDuration != 0 ||
lending_.dailyRentPrice != 0
) {
revert LendingAlreadyExists();
}
}
function ensureIsNotNull(Lending memory lending_) private pure {
if (
lending_.lenderAddress == address(0) ||
lending_.maxRentDuration == 0 ||
lending_.dailyRentPrice == 0
) {
revert LendingNotExists();
}
}
function ensureIsNull(Renting memory renting_) private pure {
if (
renting_.renterAddress != address(0) ||
renting_.rentDuration != 0 ||
renting_.rentedAt != 0
) {
revert RentingAlreadyExists();
}
}
function ensureIsNotNull(Renting memory renting_) private pure {
if (
renting_.renterAddress == address(0) ||
renting_.rentDuration == 0 ||
renting_.rentedAt == 0
) {
revert RentingNotExists();
}
}
function ensureIsLendable(
CallData memory cd_,
uint256 index_
) private pure {
if (
cd_.lendAmount[index_] == 0 ||
cd_.lendAmount[index_] > type(uint16).max
) {
revert InvalidInput("lendAmount");
}
if (
cd_.maxRentDuration[index_] == 0 ||
cd_.maxRentDuration[index_] > type(uint8).max
) {
revert InvalidInput("maxRentDuration");
}
if (uint32(cd_.dailyRentPrice[index_]) == 0) {
revert InvalidInput("dailyRentPrice");
}
}
function ensureIsRentable(
Lending memory lending_,
CallData memory cd_,
uint256 index_,
address msgSender
) private pure {
if (msgSender == lending_.lenderAddress) {
revert InvalidInput("lenderAddress");
}
if (
cd_.rentDuration[index_] == 0 ||
cd_.rentDuration[index_] > type(uint8).max
) {
revert InvalidInput("rentDuration");
}
if (
cd_.rentAmount[index_] == 0 ||
cd_.rentAmount[index_] > type(uint16).max
) {
revert InvalidInput("rentAmount");
}
if (cd_.rentDuration[index_] > lending_.maxRentDuration) {
revert InvalidInput("rentDuration");
}
}
function ensureIsReturnable(
Renting memory renting_,
address msgSender_,
uint256 blockTimestamp_
) private pure {
if (renting_.renterAddress != msgSender_) {
revert RenterRequired();
}
if (isPastReturnDate(renting_, blockTimestamp_)) {
revert RentAlreadyCompleted();
}
}
function ensureIsStoppable(
Lending memory lending_,
address msgSender_
) private pure {
if (lending_.lenderAddress != msgSender_) {
revert LenderRequired();
}
}
function ensureIsUnpackablePrice(
bytes4 price_,
uint256 scale_
) private pure {
if (uint32(price_) == 0 || scale_ < 10000) {
revert InvalidInput("price");
}
}
function ensureTokenNotSentinel(uint8 paymentIx_) private pure {
if (paymentIx_ == 0) {
revert InvalidInput("paymentIx_");
}
}
function ensureIsClaimable(
Renting memory renting_,
uint256 blockTimestamp_
) private pure {
if (!isPastReturnDate(renting_, blockTimestamp_)) {
revert RentNotCompleted();
}
}
function isPastReturnDate(
Renting memory renting_,
uint256 nowTime_
) private pure returns (bool isPast) {
if (nowTime_ <= renting_.rentedAt) {
revert AssertionError();
}
isPast = nowTime_ - renting_.rentedAt > renting_.rentDuration * 1 days;
}
function getRentFee(address token_) external view returns (uint256 fee) {
fee = _rentFee[token_];
}
function getBeneficiary()
external
view
returns (address beneficiaryAddress)
{
beneficiaryAddress = _beneficiary;
}
function setRentFee(
address token_,
uint256 newRentFee_
) external haveRights {
_setRentFee(token_, newRentFee_);
}
function setBeneficiary(address newBeneficiary_) external haveRights {
if (_beneficiary != newBeneficiary_) {
_beneficiary = newBeneficiary_;
} else {
revert SameValue();
}
}
function setPaused(bool newPaused_) external haveRights {
if (_paused != newPaused_) {
_paused = newPaused_;
} else {
revert SameValue();
}
}
function _setRentFee(address token_, uint256 newRentFee_) private {
if (newRentFee_ > 2000) {
revert InvalidInput("newRentFee_");
}
if (_rentFee[token_] != newRentFee_) {
_rentFee[token_] = newRentFee_;
emit RentFeeUpdated(token_, newRentFee_);
} else {
revert SameValue();
}
}
function getRentingId(
address nftAddress_,
uint256 tokenId_,
uint256 rentingId_
) private pure returns (bytes32 rentId) {
rentId = keccak256(
abi.encodePacked(
DOMAIN_SEPARATOR_RENTING_ID,
nftAddress_,
tokenId_,
rentingId_
)
);
}
function getLendingId(
address nftAddress_,
uint256 tokenId_,
uint256 lendingId_
) private pure returns (bytes32 lendId) {
lendId = keccak256(
abi.encodePacked(
DOMAIN_SEPARATOR_LENDING_ID,
nftAddress_,
tokenId_,
lendingId_
)
);
}
}
@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
pragma solidity ^0.8.0;
import "../IERC20.sol";
/**
* @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);
}
@openzeppelin/contracts/token/ERC20/extensions/IERC20Permit.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (token/ERC20/extensions/IERC20Permit.sol)
pragma solidity ^0.8.0;
/**
* @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);
}
@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
import "../IERC20.sol";
import "../extensions/IERC20Permit.sol";
import "../../../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 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.encodeWithSelector(token.transfer.selector, 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.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));
}
/**
* @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);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
}
/**
* @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
* non-reverting calls are assumed to be successful.
*/
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");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
}
}
/**
* @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.encodeWithSelector(token.approve.selector, spender, value);
if (!_callOptionalReturnBool(token, approvalCall)) {
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));
_callOptionalReturn(token, approvalCall);
}
}
/**
* @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
* Revert on invalid signature.
*/
function safePermit(
IERC20Permit token,
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) internal {
uint256 nonceBefore = token.nonces(owner);
token.permit(owner, spender, value, deadline, v, r, s);
uint256 nonceAfter = token.nonces(owner);
require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
}
/**
* @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");
require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
/**
* @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.isContract(address(token));
}
}
@openzeppelin/contracts/token/ERC1155/utils/ERC1155Receiver.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/utils/ERC1155Receiver.sol)
pragma solidity ^0.8.0;
import "../IERC1155Receiver.sol";
import "../../../utils/introspection/ERC165.sol";
/**
* @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);
}
}
@openzeppelin/contracts/token/ERC20/ERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.sol)
pragma solidity ^0.8.0;
import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";
/**
* @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.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* The default value of {decimals} is 18. To change this, you should override
* this function so it returns a different value.
*
* 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}.
*
* 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 default value returned by this function, unless
* it's 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:
*
* - `to` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address to, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_transfer(owner, to, 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}.
*
* NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
* `transferFrom`. This is semantically equivalent to an infinite approval.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_approve(owner, 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}.
*
* NOTE: Does not update the allowance if the current allowance
* is the maximum `uint256`.
*
* Requirements:
*
* - `from` and `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
* - the caller must have allowance for ``from``'s tokens of at least
* `amount`.
*/
function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, amount);
_transfer(from, to, 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) {
address owner = _msgSender();
_approve(owner, spender, allowance(owner, 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) {
address owner = _msgSender();
uint256 currentAllowance = allowance(owner, spender);
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(owner, spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `from` to `to`.
*
* 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:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
*/
function _transfer(address from, address to, uint256 amount) internal virtual {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(from, to, amount);
uint256 fromBalance = _balances[from];
require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[from] = fromBalance - amount;
// Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
// decrementing then incrementing.
_balances[to] += amount;
}
emit Transfer(from, to, amount);
_afterTokenTransfer(from, to, 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;
unchecked {
// Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
_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;
// Overflow not possible: amount <= accountBalance <= totalSupply.
_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 Updates `owner` s allowance for `spender` based on spent `amount`.
*
* Does not update the allowance amount in case of infinite allowance.
* Revert if not enough allowance is available.
*
* Might emit an {Approval} event.
*/
function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance != type(uint256).max) {
require(currentAllowance >= amount, "ERC20: insufficient allowance");
unchecked {
_approve(owner, spender, currentAllowance - 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 {}
}
@openzeppelin/contracts/token/ERC20/IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @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 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 `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, 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 `from` to `to` 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 from, address to, uint256 amount) external returns (bool);
}
@openzeppelin/contracts/security/ReentrancyGuard.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol)
pragma solidity ^0.8.0;
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
* available, which can be applied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*
* TIP: If you would like to learn more about reentrancy and alternative ways
* to protect against it, check out our blog post
* https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
*/
abstract contract ReentrancyGuard {
// Booleans are more expensive than uint256 or any type that takes up a full
// word because each write operation emits an extra SLOAD to first read the
// slot's contents, replace the bits taken up by the boolean, and then write
// back. This is the compiler's defense against contract upgrades and
// pointer aliasing, and it cannot be disabled.
// The values being non-zero value makes deployment a bit more expensive,
// but in exchange the refund on every call to nonReentrant will be lower in
// amount. Since refunds are capped to a percentage of the total
// transaction's gas, it is best to keep them low in cases like this one, to
// increase the likelihood of the full refund coming into effect.
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
constructor() {
_status = _NOT_ENTERED;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and making it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
_nonReentrantBefore();
_;
_nonReentrantAfter();
}
function _nonReentrantBefore() private {
// On the first call to nonReentrant, _status will be _NOT_ENTERED
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
}
function _nonReentrantAfter() private {
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
/**
* @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
* `nonReentrant` function in the call stack.
*/
function _reentrancyGuardEntered() internal view returns (bool) {
return _status == _ENTERED;
}
}
@openzeppelin/contracts/token/ERC1155/IERC1155.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC1155/IERC1155.sol)
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @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 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;
}
@openzeppelin/contracts/token/ERC1155/IERC1155Receiver.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC1155/IERC1155Receiver.sol)
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @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.
*
* NOTE: 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.
*
* NOTE: 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);
}
@openzeppelin/contracts/token/ERC1155/utils/ERC1155Holder.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC1155/utils/ERC1155Holder.sol)
pragma solidity ^0.8.0;
import "./ERC1155Receiver.sol";
/**
* Simple implementation of `ERC1155Receiver` that will allow a contract to hold ERC1155 tokens.
*
* IMPORTANT: When inheriting this contract, you must include a way to use the received tokens, otherwise they will be
* stuck.
*
* @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;
}
}
@openzeppelin/contracts/token/ERC721/IERC721.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC721/IERC721.sol)
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @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`.
*
* 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;
/**
* @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 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: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721
* or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
* understand this adds an external call which potentially creates a reentrancy vulnerability.
*
* 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 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 the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @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);
}
@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.0;
/**
* @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 `IERC721Receiver.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
@openzeppelin/contracts/token/ERC721/utils/ERC721Holder.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC721/utils/ERC721Holder.sol)
pragma solidity ^0.8.0;
import "../IERC721Receiver.sol";
/**
* @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;
}
}
@openzeppelin/contracts/utils/Address.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @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
*
* Furthermore, `isContract` will also return true if the target contract within
* the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
* which only has an effect at the end of a transaction.
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 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://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/v0.8.0/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 functionCallWithValue(target, data, 0, "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");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResultFromTarget(target, 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) {
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResultFromTarget(target, 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) {
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
* the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
*
* _Available since v4.8._
*/
function verifyCallResultFromTarget(
address target,
bool success,
bytes memory returndata,
string memory errorMessage
) internal view returns (bytes memory) {
if (success) {
if (returndata.length == 0) {
// only check isContract if the call was successful and the return data is empty
// otherwise we already know that it was a contract
require(isContract(target), "Address: call to non-contract");
}
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
/**
* @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason or 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 {
_revert(returndata, errorMessage);
}
}
function _revert(bytes memory returndata, string memory errorMessage) 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(errorMessage);
}
}
}
@openzeppelin/contracts/utils/Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol)
pragma solidity ^0.8.0;
/**
* @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;
}
}
@openzeppelin/contracts/utils/introspection/ERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)
pragma solidity ^0.8.0;
import "./IERC165.sol";
/**
* @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;
}
}
@openzeppelin/contracts/utils/introspection/IERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
/**
* @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);
}
project:/contracts/rent/interfaces/IRentRegistry.sol
// SPDX-License-Identifier: PROPRIERTARY
pragma solidity =0.8.17;
interface IRentRegistry {
event Lend(
bool is721,
address indexed lenderAddress,
address indexed nftAddress,
uint256 indexed tokenID,
uint256 lendingID,
uint8 maxRentDuration,
bytes4 dailyRentPrice,
uint16 lendAmount,
uint8 paymentToken,
bool willAutoRenew
);
event Rent(
address indexed renterAddress,
uint256 indexed lendingID,
uint256 indexed rentingID,
uint16 rentAmount,
uint8 rentDuration,
uint32 rentedAt
);
event StopLend(uint256 indexed lendingID, uint32 stoppedAt, uint16 amount);
event StopRent(
uint256 indexed rentingID,
uint256 renterAmount,
uint256 lenderAmount,
uint256 fee,
uint32 stoppedAt
);
event RentClaimed(
uint256 indexed rentingID,
uint256 amount,
uint256 fee,
uint32 collectedAt
);
event RentFeeUpdated(address indexed token, uint256 feePercent);
enum NFTStandard {
E721,
E1155
}
struct CallData {
uint256 left;
uint256 right;
NFTStandard[] nftStandard;
address[] nftAddress;
uint256[] tokenID;
uint256[] lendAmount;
uint8[] maxRentDuration;
bytes4[] dailyRentPrice;
uint256[] lendingID;
uint256[] rentingID;
uint8[] rentDuration;
uint256[] rentAmount;
uint8[] paymentToken;
bool[] willAutoRenew;
}
// fits into a single storage slot
// nftStandard 2
// lenderAddress 162
// maxRentDuration 170
// dailyRentPrice 202
// lendAmount 218
// availableAmount 234
// paymentToken 242
// willAutoRenew 250
// leaves a spare byte
struct Lending {
NFTStandard nftStandard;
address lenderAddress;
uint8 maxRentDuration;
bytes4 dailyRentPrice;
uint16 lendAmount;
uint16 availableAmount;
uint8 paymentToken;
bool willAutoRenew;
}
// fits into a single storage slot
// renterAddress 160
// rentDuration 168
// rentedAt 216
// rentAmount 232
// leaves 3 spare bytes
struct Renting {
address renterAddress;
uint8 rentDuration;
uint32 rentedAt;
uint16 rentAmount;
}
// creates the lending structs and adds them to the enumerable set
function lend(
NFTStandard[] memory nftStandard_,
address[] memory nftAddress_,
uint256[] memory tokenId_,
uint256[] memory lendAmount_,
uint8[] memory maxRentDuration_,
bytes4[] memory dailyRentPrice_,
uint8[] memory paymentToken_,
bool[] memory willAutoRenew_
) external;
function stopLend(
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(
NFTStandard[] memory nftStandard_,
address[] memory nftAddress_,
uint256[] memory tokenID_,
uint256[] memory lendingId_,
uint8[] memory rentDuration_,
uint256[] memory rentAmount
) external;
function stopRent(
NFTStandard[] memory nftStandard_,
address[] memory nftAddress_,
uint256[] memory tokenId_,
uint256[] memory lendingId_,
uint256[] memory rentingId
) external;
function claimRent(
NFTStandard[] memory nftStandard_,
address[] memory nftAddress_,
uint256[] memory tokenId_,
uint256[] memory lendingId_,
uint256[] memory rentingId
) external;
}
project:/contracts/rent/interfaces/IRentResolver.sol
// SPDX-License-Identifier: PROPRIERTARY
pragma solidity =0.8.17;
interface IRentResolver {
event PaymentTokenAdded(uint8 pt, address tokenAddress);
function getPaymentToken(uint8 pt_) external view returns (address);
function setPaymentToken(uint8 pt_, address v_) external;
}
project:/contracts/utils/Guard.sol
// SPDX-License-Identifier: PROPRIERTARY
// Author: Ilya A. Shlyakhovoy
// Email: is@unicsoft.com
pragma solidity 0.8.17;
import "./interfaces/IRights.sol";
abstract contract Guard {
string constant NO_RIGHTS = "Guard: No rights";
/// @notice only if person with rights calls the contract
modifier haveRights() {
require(_rights().haveRights(address(this), msg.sender), NO_RIGHTS);
_;
}
/// @notice only if someone with rights calls the contract
modifier haveRightsPerson(address who_) {
require(_rights().haveRights(address(this), who_), NO_RIGHTS);
_;
}
/// @notice only if who with rights calls the target function
modifier haveRightsExt(address target_, address who_) {
require(_rights().haveRights(target_, who_), NO_RIGHTS);
_;
}
function _rights() internal view virtual returns (IRights);
function setRights(address rights_) external virtual;
}
project:/contracts/utils/GuardExtension.sol
// SPDX-License-Identifier: PROPRIERTARY
// Author: Ilya A. Shlyakhovoy
// Email: is@unicsoft.com
pragma solidity 0.8.17;
import "./interfaces/IRights.sol";
import "../utils/Guard.sol";
abstract contract GuardExtension is Guard {
IRights private _rightsContract;
string private constant SAME_VALUE = "Guard: same value";
string private constant ZERO_ADDRESS = "Guard: zero address";
constructor(address rights_) {
require(rights_ != address(0), ZERO_ADDRESS);
_rightsContract = IRights(rights_);
}
function _rights() internal view virtual override returns (IRights) {
return _rightsContract;
}
function setRights(address rights_) external virtual override haveRights {
require(address(_rightsContract) != rights_, SAME_VALUE);
require(rights_ != address(0), ZERO_ADDRESS);
_rightsContract = IRights(rights_);
}
}
project:/contracts/utils/interfaces/IRights.sol
// SPDX-License-Identifier: PROPRIERTARY
// Author: Ilya A. Shlyakhovoy
// Email: is@unicsoft.com
pragma solidity 0.8.17;
interface IRights {
event AdminAdded(address indexed admin);
event AdminDefined(address indexed admin, address indexed contractHash);
event AdminRemoved(address indexed admin);
event AdminCleared(address indexed admin, address indexed contractHash);
/**
@notice Add a new admin for the Rigths contract
@param admin_ New admin address
*/
function addAdmin(address admin_) external;
/**
@notice Add a new admin for the any other contract
@param contract_ Contract address packed into address
@param admin_ New admin address
*/
function addAdmin(address contract_, address admin_) external;
/**
@notice Remove the existing admin from the Rigths contract
@param admin_ Admin address
*/
function removeAdmin(address admin_) external;
/**
@notice Remove the existing admin from the specified contract
@param contract_ Contract address packed into address
@param admin_ Admin address
*/
function removeAdmin(address contract_, address admin_) external;
/**
@notice Get the rights for the contract for the caller
@param contract_ Contract address packed into address
@return have rights or not
*/
function haveRights(address contract_) external view returns (bool);
/**
@notice Get the rights for the contract
@param contract_ Contract address packed into address
@param admin_ Admin address
@return have rights or not
*/
function haveRights(address contract_, address admin_)
external
view
returns (bool);
}
Compiler Settings
{"viaIR":true,"outputSelection":{"*":{"*":["abi","evm.bytecode","evm.deployedBytecode","evm.methodIdentifiers"]}},"optimizer":{"runs":200,"enabled":true},"libraries":{},"evmVersion":"london"}
Contract ABI
[{"type":"constructor","inputs":[{"type":"address","name":"resolver_","internalType":"address"},{"type":"address","name":"beneficiary_","internalType":"address"},{"type":"address","name":"rights_","internalType":"address"},{"type":"address[]","name":"feeTokens_","internalType":"address[]"},{"type":"uint256[]","name":"feePercents_","internalType":"uint256[]"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"_paused","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"claimRent","inputs":[{"type":"uint8[]","name":"nftStandard_","internalType":"enum IRentRegistry.NFTStandard[]"},{"type":"address[]","name":"nftAddress_","internalType":"address[]"},{"type":"uint256[]","name":"tokenId_","internalType":"uint256[]"},{"type":"uint256[]","name":"lendingId_","internalType":"uint256[]"},{"type":"uint256[]","name":"rentingId_","internalType":"uint256[]"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"beneficiaryAddress","internalType":"address"}],"name":"getBeneficiary","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"tuple","name":"lending","internalType":"struct IRentRegistry.Lending","components":[{"type":"uint8"},{"type":"address"},{"type":"uint8"},{"type":"bytes4"},{"type":"uint16"},{"type":"uint16"},{"type":"uint8"},{"type":"bool"}]}],"name":"getLending","inputs":[{"type":"address","name":"nftAddress_","internalType":"address"},{"type":"uint256","name":"tokenId_","internalType":"uint256"},{"type":"uint256","name":"lendingId_","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"fee","internalType":"uint256"}],"name":"getRentFee","inputs":[{"type":"address","name":"token_","internalType":"address"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"tuple","name":"renting","internalType":"struct IRentRegistry.Renting","components":[{"type":"address"},{"type":"uint8"},{"type":"uint32"},{"type":"uint16"}]}],"name":"getRenting","inputs":[{"type":"address","name":"nftAddress_","internalType":"address"},{"type":"uint256","name":"tokenId_","internalType":"uint256"},{"type":"uint256","name":"rentingId_","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"lend","inputs":[{"type":"uint8[]","name":"nftStandard_","internalType":"enum IRentRegistry.NFTStandard[]"},{"type":"address[]","name":"nftAddress_","internalType":"address[]"},{"type":"uint256[]","name":"tokenId_","internalType":"uint256[]"},{"type":"uint256[]","name":"lendAmount_","internalType":"uint256[]"},{"type":"uint8[]","name":"maxRentDuration_","internalType":"uint8[]"},{"type":"bytes4[]","name":"dailyRentPrice_","internalType":"bytes4[]"},{"type":"uint8[]","name":"paymentToken_","internalType":"uint8[]"},{"type":"bool[]","name":"willAutoRenew_","internalType":"bool[]"}]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"bytes4","name":"","internalType":"bytes4"}],"name":"onERC1155BatchReceived","inputs":[{"type":"address","name":"","internalType":"address"},{"type":"address","name":"","internalType":"address"},{"type":"uint256[]","name":"","internalType":"uint256[]"},{"type":"uint256[]","name":"","internalType":"uint256[]"},{"type":"bytes","name":"","internalType":"bytes"}]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"bytes4","name":"","internalType":"bytes4"}],"name":"onERC1155Received","inputs":[{"type":"address","name":"","internalType":"address"},{"type":"address","name":"","internalType":"address"},{"type":"uint256","name":"","internalType":"uint256"},{"type":"uint256","name":"","internalType":"uint256"},{"type":"bytes","name":"","internalType":"bytes"}]},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"bytes4","name":"","internalType":"bytes4"}],"name":"onERC721Received","inputs":[{"type":"address","name":"","internalType":"address"},{"type":"address","name":"","internalType":"address"},{"type":"uint256","name":"","internalType":"uint256"},{"type":"bytes","name":"","internalType":"bytes"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"rent","inputs":[{"type":"uint8[]","name":"nftStandard_","internalType":"enum IRentRegistry.NFTStandard[]"},{"type":"address[]","name":"nftAddress_","internalType":"address[]"},{"type":"uint256[]","name":"tokenId_","internalType":"uint256[]"},{"type":"uint256[]","name":"lendingId_","internalType":"uint256[]"},{"type":"uint8[]","name":"rentDuration_","internalType":"uint8[]"},{"type":"uint256[]","name":"rentAmount_","internalType":"uint256[]"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"setBeneficiary","inputs":[{"type":"address","name":"newBeneficiary_","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"setPaused","inputs":[{"type":"bool","name":"newPaused_","internalType":"bool"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"setRentFee","inputs":[{"type":"address","name":"token_","internalType":"address"},{"type":"uint256","name":"newRentFee_","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"setRights","inputs":[{"type":"address","name":"rights_","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"stopLend","inputs":[{"type":"uint8[]","name":"nftStandard_","internalType":"enum IRentRegistry.NFTStandard[]"},{"type":"address[]","name":"nftAddress_","internalType":"address[]"},{"type":"uint256[]","name":"tokenId_","internalType":"uint256[]"},{"type":"uint256[]","name":"lendingId_","internalType":"uint256[]"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"stopRent","inputs":[{"type":"uint8[]","name":"nftStandard_","internalType":"enum IRentRegistry.NFTStandard[]"},{"type":"address[]","name":"nftAddress_","internalType":"address[]"},{"type":"uint256[]","name":"tokenId_","internalType":"uint256[]"},{"type":"uint256[]","name":"lendingId_","internalType":"uint256[]"},{"type":"uint256[]","name":"rentingId_","internalType":"uint256[]"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"supportsInterface","inputs":[{"type":"bytes4","name":"interfaceId","internalType":"bytes4"}]},{"type":"event","name":"Lend","inputs":[{"type":"bool","name":"is721","indexed":false},{"type":"address","name":"lenderAddress","indexed":true},{"type":"address","name":"nftAddress","indexed":true},{"type":"uint256","name":"tokenID","indexed":true},{"type":"uint256","name":"lendingID","indexed":false},{"type":"uint8","name":"maxRentDuration","indexed":false},{"type":"bytes4","name":"dailyRentPrice","indexed":false},{"type":"uint16","name":"lendAmount","indexed":false},{"type":"uint8","name":"paymentToken","indexed":false},{"type":"bool","name":"willAutoRenew","indexed":false}],"anonymous":false},{"type":"event","name":"Rent","inputs":[{"type":"address","name":"renterAddress","indexed":true},{"type":"uint256","name":"lendingID","indexed":true},{"type":"uint256","name":"rentingID","indexed":true},{"type":"uint16","name":"rentAmount","indexed":false},{"type":"uint8","name":"rentDuration","indexed":false},{"type":"uint32","name":"rentedAt","indexed":false}],"anonymous":false},{"type":"event","name":"RentClaimed","inputs":[{"type":"uint256","name":"rentingID","indexed":true},{"type":"uint256","name":"amount","indexed":false},{"type":"uint256","name":"fee","indexed":false},{"type":"uint32","name":"collectedAt","indexed":false}],"anonymous":false},{"type":"event","name":"RentFeeUpdated","inputs":[{"type":"address","name":"token","indexed":true},{"type":"uint256","name":"feePercent","indexed":false}],"anonymous":false},{"type":"event","name":"StopLend","inputs":[{"type":"uint256","name":"lendingID","indexed":true},{"type":"uint32","name":"stoppedAt","indexed":false},{"type":"uint16","name":"amount","indexed":false}],"anonymous":false},{"type":"event","name":"StopRent","inputs":[{"type":"uint256","name":"rentingID","indexed":true},{"type":"uint256","name":"renterAmount","indexed":false},{"type":"uint256","name":"lenderAmount","indexed":false},{"type":"uint256","name":"fee","indexed":false},{"type":"uint32","name":"stoppedAt","indexed":false}],"anonymous":false},{"type":"error","name":"AlreadyRented","inputs":[]},{"type":"error","name":"AssertionError","inputs":[]},{"type":"error","name":"InvalidInput","inputs":[{"type":"bytes32","name":"parameter","internalType":"bytes32"}]},{"type":"error","name":"LenderRequired","inputs":[]},{"type":"error","name":"LendingAlreadyExists","inputs":[]},{"type":"error","name":"LendingNotExists","inputs":[]},{"type":"error","name":"NothingToPay","inputs":[]},{"type":"error","name":"Paused","inputs":[]},{"type":"error","name":"RentAlreadyCompleted","inputs":[]},{"type":"error","name":"RentNotCompleted","inputs":[]},{"type":"error","name":"RenterRequired","inputs":[]},{"type":"error","name":"RentingAlreadyExists","inputs":[]},{"type":"error","name":"RentingNotExists","inputs":[]},{"type":"error","name":"SameValue","inputs":[]}]
Contract Creation Code
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