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// This contract is part of Zellic’s smart contract dataset, which is a collection of publicly available contract code gathered as of March 2023.
//SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)
/**
* @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);
}
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
_checkOwner();
_;
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if the sender is not the owner.
*/
function _checkOwner() internal view virtual {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
contract BridgeBaseETH is Ownable{
struct InterOp {
string _uuid;
address _source;
address _sourceTokenAddress;
uint _sourceAmount;
string _sourceNetwork;
address _destination;
uint _destinationAmount;
address _destinationTokenAddress;
string _destinationNetwork;
}
mapping(string => InterOp) public txDetails;
mapping(string => bool) public txInitStatus;
mapping(string => bool) public txClaimStatus;
string public network;
mapping(address => bool) public authorizationStatus;
mapping(string => bool) public authorizedDestinationNetwork;
mapping(address => bool) public authorizedToken;
/* Events */
event DepositInitiated(
string _uuid,
address _source,
address _sourceTokenAddress,
string _sourceNetwork,
uint _sourceAmount,
address _destination,
uint _destinationAmount,
address _destinationTokenAddress,
string _destinationNetwork
);
event DepositClaimed(
string _uuid,
address _source,
address _sourceTokenAddress,
uint _sourceAmount,
string _sourceNetwork,
address _destination,
uint _destinationAmount,
address _destinationTokenAddress,
string _destinationNetwork
);
event UpdateAuthorization(address _auth,bool _status);
event UpdateAuthorizedDestinationNetwork(string _network,bool _status);
event UpdateAuthorizedToken(address _token,bool _status);
event WithdrawnAllLiquidityForToken(address _receiver,uint _amount,address _token);
event WithdrawnCollectedFees(address _receiver,uint _amount);
constructor(string memory _network) {
network = _network;
// Update Authorized Caller
updateAuthorization(0xa021c67fd2514a5031d00f8659ae0fA3E89D566f,true);
// Update Destination Network
updateAuthorizationForNetwork("ETH",true);
updateAuthorizationForNetwork("MATIC",true);
updateAuthorizationForNetwork("BSC",true);
updateAuthorizationForNetwork("AVAX",true);
// Update Token
updateAuthorizationForToken(0xdAC17F958D2ee523a2206206994597C13D831ec7,true); //USDT
updateAuthorizationForToken(0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48,true); //USDC
updateAuthorizationForToken(0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2,true); //WETH
updateAuthorizationForToken(0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599,true); //WBTC
}
modifier onlyAuth {
require(_msgSender() == owner() || authorizationStatus[_msgSender()] == true, "Not an authorized address");
_;
}
function compareStrings(string memory a, string memory b) public view returns (bool) {
return (keccak256(abi.encodePacked((a))) == keccak256(abi.encodePacked((b))));
}
function deposit(string memory _uuid,
address _sourceTokenAddress,
uint _sourceAmount,
address _destination,
uint _destinationAmount,
address _destinationTokenAddress,
string memory _destinationNetwork) public payable returns (bool) {
// Check if Source and Network is not same
require(compareStrings(network,_destinationNetwork) == false, "Cannot be same networks");
// Check if UUID is not already processed
require(txInitStatus[_uuid] == false, "Request with this uuid is already processed");
// Check if Amount is more than zero
require(_sourceAmount > 0 , "Amount cannot be zero");
// Desitnation Network validation
require(authorizedDestinationNetwork[_destinationNetwork] == true, "Not allowed as destination network");
// Check if the sourceAmount is allowed to be transferred to contract address
require(IERC20(_sourceTokenAddress).allowance(_msgSender(),address(this)) >= _sourceAmount, "Requested Amount is less than what is approved by sender");
// Transfer Desired Amount with IERC20 to contracts address
require(IERC20(_sourceTokenAddress).transferFrom(_msgSender(),address(this),_sourceAmount), "Requested Amount not transferred");
txDetails[_uuid] = InterOp({
_uuid: _uuid,
_source: _msgSender(),
_sourceNetwork: network,
_sourceTokenAddress: _sourceTokenAddress,
_sourceAmount: _sourceAmount,
_destination: _destination,
_destinationNetwork: _destinationNetwork,
_destinationAmount: _destinationAmount,
_destinationTokenAddress: _destinationTokenAddress
});
txInitStatus[_uuid] = true;
emit DepositInitiated(
_uuid,
_msgSender(),
_sourceTokenAddress,
network,
_sourceAmount,
_destination,
_destinationAmount,
_destinationTokenAddress,
_destinationNetwork
);
return true;
}
function claim( string memory _uuid,
address _source,
address _sourceTokenAddress,
uint _sourceAmount,
string memory _sourceNetwork,
address _destination,
uint _destinationAmount,
address _destinationTokenAddress) public onlyAuth returns(bool){
// Check if UUID is not already processed
require(txClaimStatus[_uuid] == false,"Request with this uuid is already processed");
// Check if enough liquidity exists
require(IERC20(_destinationTokenAddress).balanceOf(address(this)) >= _destinationAmount, "Not Sufficient Liquidity for given token");
txDetails[_uuid] = InterOp({
_uuid: _uuid,
_source: _source,
_sourceNetwork: _sourceNetwork,
_sourceTokenAddress: _sourceTokenAddress,
_sourceAmount: _sourceAmount,
_destination: _destination,
_destinationNetwork: network,
_destinationAmount: _destinationAmount,
_destinationTokenAddress: _destinationTokenAddress
});
// Update Status
txClaimStatus[_uuid] = true;
// Transfer Tokens
IERC20(_destinationTokenAddress).transfer(_destination,_destinationAmount);
return true;
}
function updateAuthorization(address _auth,bool _status) public onlyOwner {
authorizationStatus[_auth] = _status;
emit UpdateAuthorization(_auth,_status);
}
function updateAuthorizationForNetwork(string memory _destinationNetwork,bool _status) public onlyOwner {
authorizedDestinationNetwork[_destinationNetwork] = _status;
emit UpdateAuthorizedDestinationNetwork(_destinationNetwork,_status);
}
function updateAuthorizationForToken(address _token,bool _status) public onlyOwner {
authorizedToken[_token] = _status;
emit UpdateAuthorizedToken(_token,_status);
}
function withdrawAllLiquidityForToken(address _token) public onlyOwner returns(bool){
uint _availableTokens = IERC20(_token).balanceOf(address(this));
require(_availableTokens >= 0, "Not Sufficient Liquidity for given token");
IERC20(_token).transfer(msg.sender,_availableTokens);
emit WithdrawnAllLiquidityForToken(msg.sender,_availableTokens,_token);
return true;
}
function withdrawCollectedFees() public onlyOwner returns(bool){
address payable _receiver = payable(address(this));
uint _amount = _receiver.balance;
_receiver.transfer(_amount);
emit WithdrawnCollectedFees(msg.sender,_amount);
return true;
}
} |