tornadocash/tornado-nova
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This commit is contained in:
Alexey 2021-09-27 11:55:14 +03:00
parent 8597b3ebd7
commit dba19f4b36
1 changed files with 40 additions and 24 deletions
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64
contracts/TornadoPool.sol
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@ -20,11 +20,19 @@ interface IVerifier {
function verifyProof(bytes memory _proof, uint256[23] memory _input) external view returns (bool);
}
interface ERC20 {
interface IERC20 {
function transfer(address to, uint256 value) external returns (bool);
}
contract TornadoPool is Initializable {
interface IERC20Receiver {
function onTokenBridged(
IERC20 token,
uint256 value,
bytes calldata data
) external;
}
contract TornadoPool is Initializable, IERC20Receiver {
uint256 public constant FIELD_SIZE = 21888242871839275222246405745257275088548364400416034343698204186575808495617;
int256 public constant MAX_EXT_AMOUNT = 2**248;
uint256 public constant MAX_FEE = 2**248;
@ -34,6 +42,7 @@ contract TornadoPool is Initializable {
uint256 public currentCommitmentIndex;
IVerifier public immutable verifier2;
IVerifier public immutable verifier16;
IERC20 public immutable token;
struct ExtData {
address payable recipient;
@ -70,16 +79,21 @@ contract TornadoPool is Initializable {
@param _verifier2 the address of SNARK verifier for 2 inputs
@param _verifier16 the address of SNARK verifier for 16 inputs
*/
constructor(IVerifier _verifier2, IVerifier _verifier16) {
constructor(
IVerifier _verifier2,
IVerifier _verifier16,
IERC20 _token
) {
verifier2 = _verifier2;
verifier16 = _verifier16;
token = _token;
}
function initialize(bytes32 _currentRoot) external initializer {
currentRoot = _currentRoot;
}
function transaction(Proof calldata _args, ExtData calldata _extData) public payable {
function transaction(Proof memory _args, ExtData memory _extData) public payable {
require(currentRoot == _args.root, "Invalid merkle root");
for (uint256 i = 0; i < _args.inputNullifiers.length; i++) {
require(!isSpent(_args.inputNullifiers[i]), "Input is already spent");
@ -101,13 +115,13 @@ contract TornadoPool is Initializable {
} else if (_extData.extAmount < 0) {
require(msg.value == 0, "Sent ETH amount should be 0 for withdrawal");
require(_extData.recipient != address(0), "Can't withdraw to zero address");
_transfer(_extData.recipient, uint256(-_extData.extAmount));
token.transfer(_extData.recipient, uint256(-_extData.extAmount));
} else {
require(msg.value == 0, "Sent ETH amount should be 0 for transaction");
}
if (_extData.fee > 0) {
_transfer(_extData.relayer, _extData.fee);
token.transfer(_extData.relayer, _extData.fee);
}
emit NewCommitment(_args.outputCommitments[0], cachedCommitmentIndex, _extData.encryptedOutput1);
@ -117,18 +131,6 @@ contract TornadoPool is Initializable {
}
}
function _transfer(address payable _to, uint256 _amount) internal {
uint256 id;
assembly {
id := chainid()
}
if (id == 10) {
ERC20(0x4200000000000000000000000000000000000006).transfer(_to, _amount);
} else {
_to.transfer(_amount);
}
}
function calculatePublicAmount(int256 _extAmount, uint256 _fee) public pure returns (uint256) {
require(_fee < MAX_FEE, "Invalid fee");
require(_extAmount > -MAX_EXT_AMOUNT && _extAmount < MAX_EXT_AMOUNT, "Invalid ext amount");
@ -141,7 +143,7 @@ contract TornadoPool is Initializable {
return nullifierHashes[_nullifierHash];
}
function verifyProof(Proof calldata _args) public view returns (bool) {
function verifyProof(Proof memory _args) public view returns (bool) {
if (_args.inputNullifiers.length == 2) {
return
verifier2.verifyProof(
@ -193,17 +195,31 @@ contract TornadoPool is Initializable {
}
}
function register(Register calldata args) public {
function register(Register memory args) public {
emit PublicKey(msg.sender, args.pubKey);
emit EncryptedAccount(msg.sender, args.account);
}
function registerAndTransact(
Register calldata _registerArgs,
Proof calldata _proofArgs,
ExtData calldata _extData
) external payable {
Register memory _registerArgs,
Proof memory _proofArgs,
ExtData memory _extData
) public payable {
register(_registerArgs);
transaction(_proofArgs, _extData);
}
function onTokenBridged(
IERC20 _token,
uint256,
bytes calldata _data
) external override {
require(_token == token, "provided token is not supported");
(Register memory _registerArgs, Proof memory _args, ExtData memory _extData) = abi.decode(_data, (Register, Proof, ExtData));
if (_registerArgs.pubKey.length != 0 && _registerArgs.account.length != 0) {
registerAndTransact(_registerArgs, _args, _extData);
} else {
transaction(_args, _extData);
}
}
}