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GenericMage/Contracts...MFP-ListingTemplate_flattened.sol

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Contracts...MFP-ListingTemplate_flattened.sol
// File: Contracts/imports/IERC20.sol
pragma solidity ^0.8.1;
interface IERC20 {
function decimals() external view returns (uint8);
function transfer(address to, uint256 amount) external returns (bool);
function transferFrom(address from, address to, uint256 amount) external returns (bool);
function approve(address spender, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
}
// File: Contracts/imports/IERC20Permit.sol
// OpenZeppelin Contracts (last updated v4.9.0) (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.
*/
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].
*/
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);
}
// File: Contracts/imports/Address.sol
// 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);
}
}
}
// File: Contracts/imports/SafeERC20.sol
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
/**
* @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. Compatible with tokens that require the approval to be set to
* 0 before setting it to a non-zero value.
*/
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));
}
}
// File: Contracts/MFP-ListingTemplate.sol
pragma solidity ^0.8.1;
// Version: 0.0.5
contract MFPListingTemplate {
using SafeERC20 for IERC20;
address public routerAddress;
address public tokenA;
address public tokenB;
struct UpdateType { // Added locally, identical to MFPRouter.sol
uint8 updateType; // 0 = balance, 1 = buy order, 2 = sell order
uint256 index; // orderId or slot index
uint256 value; // principal or amount (normalized)
address addr; // makerAddress
address recipient;// recipientAddress
uint256 maxPrice; // for buy orders
uint256 minPrice; // for sell orders
}
struct VolumeBalance {
uint256 xBalance;
uint256 yBalance;
uint256 xVolume;
uint256 yVolume;
}
struct BuyOrder {
address makerAddress;
address recipientAddress;
uint256 maxPrice;
uint256 minPrice;
uint256 pending;
uint256 filled;
uint256 timestamp;
uint256 blockNumber;
uint8 status; // 0 = cancelled, 1 = pending, 2 = partially filled, 3 = filled
}
struct SellOrder {
address makerAddress;
address recipientAddress;
uint256 maxPrice;
uint256 minPrice;
uint256 pending;
uint256 filled;
uint256 timestamp;
uint256 blockNumber;
uint8 status;
}
mapping(uint256 => VolumeBalance) public volumeBalances;
mapping(uint256 => address) public liquidityAddresses;
mapping(uint256 => uint256) public prices;
mapping(uint256 => BuyOrder) public buyOrders;
mapping(uint256 => SellOrder) public sellOrders;
mapping(uint256 => uint256[]) public pendingBuyOrders;
mapping(uint256 => uint256[]) public pendingSellOrders;
mapping(address => uint256[]) public makerPendingOrders;
event OrderUpdated(uint256 listingId, uint256 orderId, bool isBuy, uint8 status);
event BalancesUpdated(uint256 listingId, uint256 xBalance, uint256 yBalance);
function setRouter(address _routerAddress) external {
require(routerAddress == address(0), "Router already set");
routerAddress = _routerAddress;
}
function setLiquidityAddress(uint256 listingId, address _liquidityAddress) external {
require(msg.sender == routerAddress, "Router only");
require(liquidityAddresses[listingId] == address(0), "Liquidity already set");
liquidityAddresses[listingId] = _liquidityAddress;
}
function setTokens(address _tokenA, address _tokenB) external {
require(msg.sender == routerAddress, "Router only");
require(tokenA == address(0) && tokenB == address(0), "Tokens already set");
require(_tokenA != _tokenB, "Tokens must be different");
tokenA = _tokenA;
tokenB = _tokenB;
}
function update(uint256 listingId, UpdateType[] memory updates) external { // Updated signature
require(msg.sender == routerAddress, "Router only");
VolumeBalance storage balances = volumeBalances[listingId];
for (uint256 i = 0; i < updates.length; i++) {
UpdateType memory u = updates[i];
if (u.updateType == 0) { // Balance update
if (u.index == 0) {
balances.xBalance = u.value;
} else if (u.index == 1) {
balances.yBalance = u.value;
}
} else if (u.updateType == 1) { // Buy order update
BuyOrder storage order = buyOrders[u.index];
if (order.makerAddress == address(0)) { // New order
order.makerAddress = u.addr;
order.recipientAddress = u.recipient;
order.maxPrice = u.maxPrice;
order.minPrice = u.minPrice;
order.pending = u.value;
order.timestamp = block.timestamp;
order.blockNumber = block.number;
order.status = 1;
pendingBuyOrders[listingId].push(u.index);
makerPendingOrders[u.addr].push(u.index);
emit OrderUpdated(listingId, u.index, true, 1);
} else if (u.value == 0) { // Cancel order
order.status = 0;
removePendingOrder(pendingBuyOrders[listingId], u.index);
removePendingOrder(makerPendingOrders[u.addr], u.index);
emit OrderUpdated(listingId, u.index, true, 0);
} else if (order.status == 1) { // Fill order
require(order.pending >= u.value, "Insufficient pending");
order.pending -= u.value;
order.filled += u.value;
balances.xBalance -= u.value;
order.status = order.pending == 0 ? 3 : 2;
if (order.pending == 0) {
removePendingOrder(pendingBuyOrders[listingId], u.index);
removePendingOrder(makerPendingOrders[order.makerAddress], u.index);
}
emit OrderUpdated(listingId, u.index, true, order.status);
}
} else if (u.updateType == 2) { // Sell order update
SellOrder storage order = sellOrders[u.index];
if (order.makerAddress == address(0)) { // New order
order.makerAddress = u.addr;
order.recipientAddress = u.recipient;
order.maxPrice = u.maxPrice;
order.minPrice = u.minPrice;
order.pending = u.value;
order.timestamp = block.timestamp;
order.blockNumber = block.number;
order.status = 1;
pendingSellOrders[listingId].push(u.index);
makerPendingOrders[u.addr].push(u.index);
emit OrderUpdated(listingId, u.index, false, 1);
} else if (u.value == 0) { // Cancel order
order.status = 0;
removePendingOrder(pendingSellOrders[listingId], u.index);
removePendingOrder(makerPendingOrders[u.addr], u.index);
emit OrderUpdated(listingId, u.index, false, 0);
} else if (order.status == 1) { // Fill order
require(order.pending >= u.value, "Insufficient pending");
order.pending -= u.value;
order.filled += u.value;
balances.yBalance -= u.value;
order.status = order.pending == 0 ? 3 : 2;
if (order.pending == 0) {
removePendingOrder(pendingSellOrders[listingId], u.index);
removePendingOrder(makerPendingOrders[order.makerAddress], u.index);
}
emit OrderUpdated(listingId, u.index, false, order.status);
}
}
}
if (balances.xBalance > 0 && balances.yBalance > 0) {
prices[listingId] = (balances.xBalance * 1e18) / balances.yBalance;
}
emit BalancesUpdated(listingId, balances.xBalance, balances.yBalance);
}
function transact(uint256 listingId, address token, uint256 amount, address recipient) external {
require(msg.sender == routerAddress, "Router only");
VolumeBalance storage balances = volumeBalances[listingId];
uint8 decimals = token == address(0) ? 18 : IERC20(token).decimals();
uint256 normalizedAmount = normalize(amount, decimals);
if (token == tokenA) {
require(balances.xBalance >= normalizedAmount, "Insufficient xBalance");
balances.xBalance -= normalizedAmount;
balances.xVolume += normalizedAmount;
if (token == address(0)) {
(bool success, ) = recipient.call{value: amount}("");
require(success, "ETH transfer failed");
} else {
IERC20(token).safeTransfer(recipient, amount);
}
} else if (token == tokenB) {
require(balances.yBalance >= normalizedAmount, "Insufficient yBalance");
balances.yBalance -= normalizedAmount;
balances.yVolume += normalizedAmount;
if (token == address(0)) {
(bool success, ) = recipient.call{value: amount}("");
require(success, "ETH transfer failed");
} else {
IERC20(token).safeTransfer(recipient, amount);
}
} else {
revert("Invalid token");
}
if (balances.xBalance > 0 && balances.yBalance > 0) {
prices[listingId] = (balances.xBalance * 1e18) / balances.yBalance;
}
emit BalancesUpdated(listingId, balances.xBalance, balances.yBalance);
}
function normalize(uint256 amount, uint8 decimals) internal pure returns (uint256) {
if (decimals == 18) return amount;
else if (decimals < 18) return amount * 10**(18 - decimals);
else return amount / 10**(decimals - 18);
}
function denormalize(uint256 amount, uint8 decimals) internal pure returns (uint256) {
if (decimals == 18) return amount;
else if (decimals < 18) return amount / 10**(18 - decimals);
else return amount * 10**(decimals - 18);
}
function removePendingOrder(uint256[] storage orders, uint256 orderId) internal {
for (uint256 i = 0; i < orders.length; i++) {
if (orders[i] == orderId) {
orders[i] = orders[orders.length - 1];
orders.pop();
break;
}
}
}
}
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