Contract Name:
PlexusDiamond
Contract Source Code:
// SPDX-License-Identifier: MIT
pragma solidity 0.8.17;
error SwapFailed();
error LengthNotMatch();
error TokenAddressIsZero();
error TokenNotSupported();
error CannotBridgeToSameNetwork();
error ZeroPostSwapBalance();
error NoSwapDataProvided();
error NativeValueWithERC();
error ContractCallNotAllowed();
error NullAddrIsNotAValidSpender();
error NullAddrIsNotAnERC20Token();
error NoTransferToNullAddress();
error NativeAssetTransferFailed();
error InvalidBridgeConfigLength();
error InvalidAmount();
error InvalidContract();
error InvalidConfig();
error UnsupportedChainId(uint256 chainId);
error InvalidReceiver();
error InvalidDestinationChain();
error InvalidSendingToken();
error InvalidCaller();
error AlreadyInitialized();
error NotInitialized();
error OnlyContractOwner();
error CannotAuthoriseSelf();
error RecoveryAddressCannotBeZero();
error CannotDepositNativeToken();
error InvalidCallData();
error NativeAssetNotSupported();
error UnAuthorized();
error NoSwapFromZeroBalance();
error InvalidFallbackAddress();
error CumulativeSlippageTooHigh(uint256 minAmount, uint256 receivedAmount);
error InsufficientBalance(uint256 required, uint256 balance);
error ZeroAmount();
error InvalidFee();
error InformationMismatch();
error NotAContract();
error NotEnoughBalance(uint256 requested, uint256 available);
error ReentrancyError();
// SPDX-License-Identifier: MIT
pragma solidity 0.8.17;
interface IDiamondCut {
enum FacetCutAction {
Add,
Replace,
Remove
}
// Add=0, Replace=1, Remove=2
struct FacetCut {
address facetAddress;
FacetCutAction action;
bytes4[] functionSelectors;
}
/// @notice Add/replace/remove any number of functions and optionally execute
/// a function with delegatecall
/// @param _diamondCut Contains the facet addresses and function selectors
/// @param _init The address of the contract or facet to execute _calldata
/// @param _calldata A function call, including function selector and arguments
/// _calldata is executed with delegatecall on _init
function diamondCut(FacetCut[] calldata _diamondCut, address _init, bytes calldata _calldata) external;
event DiamondCut(FacetCut[] _diamondCut, address _init, bytes _calldata);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
/**
* @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);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.17;
struct BridgeInfo {
string bridge;
address dstToken;
uint64 chainId;
uint256 amount;
address user;
}
struct SwapData {
address swapRouter;
address user;
address srcToken;
address dstToken;
uint256 amount;
bytes callData;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (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
* ====
*
* [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://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.17;
import "../interfaces/Structs.sol";
library LibData {
bytes32 internal constant BRIDGE_NAMESPACE = keccak256("diamond.standard.data.bridge");
bytes32 internal constant STARGATE_NAMESPACE = keccak256("diamond.standard.data.stargate");
struct BridgeData {
mapping(bytes32 => BridgeInfo) transferInfo;
mapping(bytes32 => bool) transfers;
}
struct StargateData {
mapping(address => uint16) poolId;
mapping(address => mapping(uint256 => uint16)) dstPoolId;
mapping(uint256 => uint16) layerZeroId;
}
function bridgeStorage() internal pure returns (BridgeData storage ds) {
bytes32 position = BRIDGE_NAMESPACE;
// solhint-disable-next-line no-inline-assembly
assembly {
ds.slot := position
}
}
function stargateStorage() internal pure returns (StargateData storage s) {
bytes32 position = STARGATE_NAMESPACE;
assembly {
s.slot := position
}
}
function bridgeInfo(bytes32 tId, address srcToken, address toDstToken, uint64 chainId, uint256 amount, string memory bridge) internal {
BridgeData storage bs = bridgeStorage();
BridgeInfo memory tif = bs.transferInfo[tId];
tif.dstToken = srcToken;
tif.chainId = chainId;
tif.amount = amount;
tif.user = msg.sender;
tif.bridge = bridge;
bs.transferInfo[tId] = tif;
emit Bridge(tif.user, tif.chainId, tif.dstToken, toDstToken, tif.amount, tId, tif.bridge);
}
event Bridge(address user, uint64 chainId, address srcToken, address toDstToken, uint256 fromAmount, bytes32 transferId, string bridge);
event Swap(address user, address srcToken, address toToken, uint256 amount, uint256 returnAmount);
event Relayswap(address receiver, address toToken, uint256 returnAmount);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.17;
import {IDiamondCut} from "../interfaces/IDiamondCut.sol";
import {LibPlexusUtil} from "../libraries/LibPlexusUtil.sol";
import {OnlyContractOwner} from "../Errors/GenericErrors.sol";
/// Implementation of EIP-2535 Diamond Standard
/// https://eips.ethereum.org/EIPS/eip-2535
library LibDiamond {
bytes32 internal constant DIAMOND_STORAGE_POSITION = keccak256("diamond.standard.diamond.storage");
// Diamond specific errors
error IncorrectFacetCutAction();
error NoSelectorsInFace();
error FunctionAlreadyExists();
error FacetAddressIsZero();
error FacetAddressIsNotZero();
error FacetContainsNoCode();
error FunctionDoesNotExist();
error FunctionIsImmutable();
error InitZeroButCalldataNotEmpty();
error CalldataEmptyButInitNotZero();
error InitReverted();
// ----------------
struct FacetAddressAndPosition {
address facetAddress;
uint96 functionSelectorPosition; // position in facetFunctionSelectors.functionSelectors array
}
struct FacetFunctionSelectors {
bytes4[] functionSelectors;
uint256 facetAddressPosition; // position of facetAddress in facetAddresses array
}
struct DiamondStorage {
// maps function selector to the facet address and
// the position of the selector in the facetFunctionSelectors.selectors array
mapping(bytes4 => FacetAddressAndPosition) selectorToFacetAndPosition;
// maps facet addresses to function selectors
mapping(address => FacetFunctionSelectors) facetFunctionSelectors;
// facet addresses
address[] facetAddresses;
// Used to query if a contract implements an interface.
// Used to implement ERC-165.
mapping(bytes4 => bool) supportedInterfaces;
// owner of the contract
address contractOwner;
uint256 fee;
}
function diamondStorage() internal pure returns (DiamondStorage storage ds) {
bytes32 position = DIAMOND_STORAGE_POSITION;
// solhint-disable-next-line no-inline-assembly
assembly {
ds.slot := position
}
}
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
function setFeePercent(uint256 percent) internal {
DiamondStorage storage ds = diamondStorage();
ds.fee = percent;
}
function setContractOwner(address _newOwner) internal {
DiamondStorage storage ds = diamondStorage();
address previousOwner = ds.contractOwner;
ds.contractOwner = _newOwner;
emit OwnershipTransferred(previousOwner, _newOwner);
}
function contractOwner() internal view returns (address contractOwner_) {
contractOwner_ = diamondStorage().contractOwner;
}
function enforceIsContractOwner() internal view {
if (msg.sender != diamondStorage().contractOwner) revert OnlyContractOwner();
}
event DiamondCut(IDiamondCut.FacetCut[] _diamondCut, address _init, bytes _calldata);
// Internal function version of diamondCut
function diamondCut(IDiamondCut.FacetCut[] memory _diamondCut, address _init, bytes memory _calldata) internal {
for (uint256 facetIndex; facetIndex < _diamondCut.length; ) {
IDiamondCut.FacetCutAction action = _diamondCut[facetIndex].action;
if (action == IDiamondCut.FacetCutAction.Add) {
addFunctions(_diamondCut[facetIndex].facetAddress, _diamondCut[facetIndex].functionSelectors);
} else if (action == IDiamondCut.FacetCutAction.Replace) {
replaceFunctions(_diamondCut[facetIndex].facetAddress, _diamondCut[facetIndex].functionSelectors);
} else if (action == IDiamondCut.FacetCutAction.Remove) {
removeFunctions(_diamondCut[facetIndex].facetAddress, _diamondCut[facetIndex].functionSelectors);
} else {
revert IncorrectFacetCutAction();
}
unchecked {
++facetIndex;
}
}
emit DiamondCut(_diamondCut, _init, _calldata);
initializeDiamondCut(_init, _calldata);
}
function addFunctions(address _facetAddress, bytes4[] memory _functionSelectors) internal {
if (_functionSelectors.length == 0) {
revert NoSelectorsInFace();
}
DiamondStorage storage ds = diamondStorage();
if (LibPlexusUtil.isZeroAddress(_facetAddress)) {
revert FacetAddressIsZero();
}
uint96 selectorPosition = uint96(ds.facetFunctionSelectors[_facetAddress].functionSelectors.length);
// add new facet address if it does not exist
if (selectorPosition == 0) {
addFacet(ds, _facetAddress);
}
for (uint256 selectorIndex; selectorIndex < _functionSelectors.length; ) {
bytes4 selector = _functionSelectors[selectorIndex];
address oldFacetAddress = ds.selectorToFacetAndPosition[selector].facetAddress;
if (!LibPlexusUtil.isZeroAddress(oldFacetAddress)) {
revert FunctionAlreadyExists();
}
addFunction(ds, selector, selectorPosition, _facetAddress);
unchecked {
++selectorPosition;
++selectorIndex;
}
}
}
function replaceFunctions(address _facetAddress, bytes4[] memory _functionSelectors) internal {
if (_functionSelectors.length == 0) {
revert NoSelectorsInFace();
}
DiamondStorage storage ds = diamondStorage();
if (LibPlexusUtil.isZeroAddress(_facetAddress)) {
revert FacetAddressIsZero();
}
uint96 selectorPosition = uint96(ds.facetFunctionSelectors[_facetAddress].functionSelectors.length);
// add new facet address if it does not exist
if (selectorPosition == 0) {
addFacet(ds, _facetAddress);
}
for (uint256 selectorIndex; selectorIndex < _functionSelectors.length; ) {
bytes4 selector = _functionSelectors[selectorIndex];
address oldFacetAddress = ds.selectorToFacetAndPosition[selector].facetAddress;
if (oldFacetAddress == _facetAddress) {
revert FunctionAlreadyExists();
}
removeFunction(ds, oldFacetAddress, selector);
addFunction(ds, selector, selectorPosition, _facetAddress);
unchecked {
++selectorPosition;
++selectorIndex;
}
}
}
function removeFunctions(address _facetAddress, bytes4[] memory _functionSelectors) internal {
if (_functionSelectors.length == 0) {
revert NoSelectorsInFace();
}
DiamondStorage storage ds = diamondStorage();
// if function does not exist then do nothing and return
if (!LibPlexusUtil.isZeroAddress(_facetAddress)) {
revert FacetAddressIsNotZero();
}
for (uint256 selectorIndex; selectorIndex < _functionSelectors.length; ) {
bytes4 selector = _functionSelectors[selectorIndex];
address oldFacetAddress = ds.selectorToFacetAndPosition[selector].facetAddress;
removeFunction(ds, oldFacetAddress, selector);
unchecked {
++selectorIndex;
}
}
}
function addFacet(DiamondStorage storage ds, address _facetAddress) internal {
enforceHasContractCode(_facetAddress);
ds.facetFunctionSelectors[_facetAddress].facetAddressPosition = ds.facetAddresses.length;
ds.facetAddresses.push(_facetAddress);
}
function addFunction(DiamondStorage storage ds, bytes4 _selector, uint96 _selectorPosition, address _facetAddress) internal {
ds.selectorToFacetAndPosition[_selector].functionSelectorPosition = _selectorPosition;
ds.facetFunctionSelectors[_facetAddress].functionSelectors.push(_selector);
ds.selectorToFacetAndPosition[_selector].facetAddress = _facetAddress;
}
function removeFunction(DiamondStorage storage ds, address _facetAddress, bytes4 _selector) internal {
if (LibPlexusUtil.isZeroAddress(_facetAddress)) {
revert FunctionDoesNotExist();
}
// an immutable function is a function defined directly in a diamond
if (_facetAddress == address(this)) {
revert FunctionIsImmutable();
}
// replace selector with last selector, then delete last selector
uint256 selectorPosition = ds.selectorToFacetAndPosition[_selector].functionSelectorPosition;
uint256 lastSelectorPosition = ds.facetFunctionSelectors[_facetAddress].functionSelectors.length - 1;
// if not the same then replace _selector with lastSelector
if (selectorPosition != lastSelectorPosition) {
bytes4 lastSelector = ds.facetFunctionSelectors[_facetAddress].functionSelectors[lastSelectorPosition];
ds.facetFunctionSelectors[_facetAddress].functionSelectors[selectorPosition] = lastSelector;
ds.selectorToFacetAndPosition[lastSelector].functionSelectorPosition = uint96(selectorPosition);
}
// delete the last selector
ds.facetFunctionSelectors[_facetAddress].functionSelectors.pop();
delete ds.selectorToFacetAndPosition[_selector];
// if no more selectors for facet address then delete the facet address
if (lastSelectorPosition == 0) {
// replace facet address with last facet address and delete last facet address
uint256 lastFacetAddressPosition = ds.facetAddresses.length - 1;
uint256 facetAddressPosition = ds.facetFunctionSelectors[_facetAddress].facetAddressPosition;
if (facetAddressPosition != lastFacetAddressPosition) {
address lastFacetAddress = ds.facetAddresses[lastFacetAddressPosition];
ds.facetAddresses[facetAddressPosition] = lastFacetAddress;
ds.facetFunctionSelectors[lastFacetAddress].facetAddressPosition = facetAddressPosition;
}
ds.facetAddresses.pop();
delete ds.facetFunctionSelectors[_facetAddress].facetAddressPosition;
}
}
function initializeDiamondCut(address _init, bytes memory _calldata) internal {
if (LibPlexusUtil.isZeroAddress(_init)) {
if (_calldata.length != 0) {
revert InitZeroButCalldataNotEmpty();
}
} else {
if (_calldata.length == 0) {
revert CalldataEmptyButInitNotZero();
}
if (_init != address(this)) {
enforceHasContractCode(_init);
}
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory error) = _init.delegatecall(_calldata);
if (!success) {
if (error.length > 0) {
// bubble up the error
revert(string(error));
} else {
revert InitReverted();
}
}
}
}
function enforceHasContractCode(address _contract) internal view {
uint256 contractSize;
// solhint-disable-next-line no-inline-assembly
assembly {
contractSize := extcodesize(_contract)
}
if (contractSize == 0) {
revert FacetContainsNoCode();
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.17;
import {SwapFailed} from "../Errors/GenericErrors.sol";
import "../libraries/SafeERC20.sol";
import "../interfaces/Structs.sol";
import "./LibDiamond.sol";
import "./LibData.sol";
library LibPlexusUtil {
using SafeERC20 for IERC20;
IERC20 private constant NATIVE_ADDRESS = IERC20(0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE);
/// @notice Determines whether the given address is the zero address
/// @param addr The address to verify
/// @return Boolean indicating if the address is the zero address
function isZeroAddress(address addr) internal pure returns (bool) {
return addr == address(0);
}
function getBalance(address token) internal view returns (uint256) {
return token == address(NATIVE_ADDRESS) ? address(this).balance : IERC20(token).balanceOf(address(this));
}
function userBalance(address user, address token) internal view returns (uint256) {
return token == address(NATIVE_ADDRESS) ? user.balance : IERC20(token).balanceOf(user);
}
function _isNative(address _token) internal pure returns (bool) {
return (IERC20(_token) == NATIVE_ADDRESS);
}
function _isTokenDeposit(address _token, uint256 _amount) internal returns (bool isNotNative) {
isNotNative = !_isNative(_token);
if (isNotNative) {
IERC20(_token).safeTransferFrom(msg.sender, address(this), _amount);
}
}
function _tokenDepositAndSwap(SwapData calldata _swap) internal returns (uint256) {
SwapData calldata swapData = _swap;
_isTokenDeposit(swapData.srcToken, swapData.amount);
uint256 dstAmount = _swapStart((swapData));
return dstAmount;
}
function _tokenDepositAndUserSwap(SwapData calldata _swap) internal returns (uint256) {
SwapData calldata swapData = _swap;
_isTokenDeposit(swapData.srcToken, swapData.amount);
uint256 dstAmount = _userSwapStart((swapData));
return dstAmount;
}
function _swapStart(SwapData calldata swapData) internal returns (uint256 dstAmount) {
SwapData calldata swap = swapData;
bool isNotNative = !_isNative(swap.srcToken);
if (isNotNative) {
IERC20(swap.srcToken).approve(swap.swapRouter, swap.amount);
}
uint256 initDstTokenBalance = getBalance(swap.dstToken);
(bool succ, ) = swap.swapRouter.call{value: isNotNative ? 0 : swap.amount}(swap.callData);
if (succ) {
uint256 dstTokenBalance = getBalance(swap.dstToken);
dstAmount = dstTokenBalance > initDstTokenBalance ? dstTokenBalance - initDstTokenBalance : dstTokenBalance;
emit LibData.Swap(swap.user, swap.srcToken, swap.dstToken, swap.amount, dstAmount);
} else {
revert SwapFailed();
}
}
function _userSwapStart(SwapData calldata swapData) internal returns (uint256 dstAmount) {
SwapData calldata swap = swapData;
bool isNotNative = !_isNative(swap.srcToken);
if (isNotNative) {
IERC20(swap.srcToken).approve(swap.swapRouter, swap.amount);
}
uint256 initDstTokenBalance = userBalance(swap.user, swap.dstToken);
(bool succ, ) = swap.swapRouter.call{value: isNotNative ? 0 : swap.amount}(swap.callData);
if (succ) {
uint256 dstTokenBalance = userBalance(swap.user, swap.dstToken);
dstAmount = dstTokenBalance > initDstTokenBalance ? dstTokenBalance - initDstTokenBalance : dstTokenBalance;
emit LibData.Swap(swap.user, swap.srcToken, swap.dstToken, swap.amount, dstAmount);
} else {
revert SwapFailed();
}
}
function _safeNativeTransfer(address to_, uint256 amount_) internal {
(bool sent, ) = to_.call{value: amount_}("");
require(sent, "Safe safeTransfer fail");
}
function _fee(address dstToken, uint256 dstAmount) internal returns (uint256 returnAmount) {
LibDiamond.DiamondStorage storage ds = LibDiamond.diamondStorage();
uint256 getFee = (dstAmount * ds.fee) / 10000;
returnAmount = dstAmount - getFee;
if (getFee > 0) {
if (!_isNative(dstToken)) {
IERC20(dstToken).safeTransfer(ds.contractOwner, getFee);
} else {
_safeNativeTransfer(ds.contractOwner, getFee);
}
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../interfaces/IERC20.sol";
import "./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;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
uint256 newAllowance = oldAllowance - value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) {
// Return data is optional
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.17;
import {LibDiamond} from "./libraries/LibDiamond.sol";
import {IDiamondCut} from "./interfaces/IDiamondCut.sol";
contract PlexusDiamond {
constructor(address _contractOwner, address _diamondCutFacet) payable {
LibDiamond.setContractOwner(_contractOwner);
// Add the diamondCut external function from the diamondCutFacet
IDiamondCut.FacetCut[] memory cut = new IDiamondCut.FacetCut[](1);
bytes4[] memory functionSelectors = new bytes4[](1);
functionSelectors[0] = IDiamondCut.diamondCut.selector;
cut[0] = IDiamondCut.FacetCut({facetAddress: _diamondCutFacet, action: IDiamondCut.FacetCutAction.Add, functionSelectors: functionSelectors});
LibDiamond.diamondCut(cut, address(0), "");
}
// Find facet for function that is called and execute the
// function if a facet is found and return any value.
// solhint-disable-next-line no-complex-fallback
fallback() external payable {
LibDiamond.DiamondStorage storage ds;
bytes32 position = LibDiamond.DIAMOND_STORAGE_POSITION;
// get diamond storage
// solhint-disable-next-line no-inline-assembly
assembly {
ds.slot := position
}
// get facet from function selector
address facet = ds.selectorToFacetAndPosition[msg.sig].facetAddress;
if (facet == address(0)) {
revert LibDiamond.FunctionDoesNotExist();
}
// Execute external function from facet using delegatecall and return any value.
// solhint-disable-next-line no-inline-assembly
assembly {
// copy function selector and any arguments
calldatacopy(0, 0, calldatasize())
// execute function call using the facet
let result := delegatecall(gas(), facet, 0, calldatasize(), 0, 0)
// get any return value
returndatacopy(0, 0, returndatasize())
// return any return value or error back to the caller
switch result
case 0 {
revert(0, returndatasize())
}
default {
return(0, returndatasize())
}
}
}
// Able to receive ether
// solhint-disable-next-line no-empty-blocks
receive() external payable {}
}