Contract Name:
SmartAccountProxyFactory
Contract Source Code:
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
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);
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (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);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (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;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Create2.sol)
pragma solidity ^0.8.0;
/**
* @dev Helper to make usage of the `CREATE2` EVM opcode easier and safer.
* `CREATE2` can be used to compute in advance the address where a smart
* contract will be deployed, which allows for interesting new mechanisms known
* as 'counterfactual interactions'.
*
* See the https://eips.ethereum.org/EIPS/eip-1014#motivation[EIP] for more
* information.
*/
library Create2 {
/**
* @dev Deploys a contract using `CREATE2`. The address where the contract
* will be deployed can be known in advance via {computeAddress}.
*
* The bytecode for a contract can be obtained from Solidity with
* `type(contractName).creationCode`.
*
* Requirements:
*
* - `bytecode` must not be empty.
* - `salt` must have not been used for `bytecode` already.
* - the factory must have a balance of at least `amount`.
* - if `amount` is non-zero, `bytecode` must have a `payable` constructor.
*/
function deploy(
uint256 amount,
bytes32 salt,
bytes memory bytecode
) internal returns (address addr) {
require(address(this).balance >= amount, "Create2: insufficient balance");
require(bytecode.length != 0, "Create2: bytecode length is zero");
/// @solidity memory-safe-assembly
assembly {
addr := create2(amount, add(bytecode, 0x20), mload(bytecode), salt)
}
require(addr != address(0), "Create2: Failed on deploy");
}
/**
* @dev Returns the address where a contract will be stored if deployed via {deploy}. Any change in the
* `bytecodeHash` or `salt` will result in a new destination address.
*/
function computeAddress(bytes32 salt, bytes32 bytecodeHash) internal view returns (address) {
return computeAddress(salt, bytecodeHash, address(this));
}
/**
* @dev Returns the address where a contract will be stored if deployed via {deploy} from a contract located at
* `deployer`. If `deployer` is this contract's address, returns the same value as {computeAddress}.
*/
function computeAddress(
bytes32 salt,
bytes32 bytecodeHash,
address deployer
) internal pure returns (address addr) {
/// @solidity memory-safe-assembly
assembly {
let ptr := mload(0x40) // Get free memory pointer
// | | ↓ ptr ... ↓ ptr + 0x0B (start) ... ↓ ptr + 0x20 ... ↓ ptr + 0x40 ... |
// |-------------------|---------------------------------------------------------------------------|
// | bytecodeHash | CCCCCCCCCCCCC...CC |
// | salt | BBBBBBBBBBBBB...BB |
// | deployer | 000000...0000AAAAAAAAAAAAAAAAAAA...AA |
// | 0xFF | FF |
// |-------------------|---------------------------------------------------------------------------|
// | memory | 000000...00FFAAAAAAAAAAAAAAAAAAA...AABBBBBBBBBBBBB...BBCCCCCCCCCCCCC...CC |
// | keccak(start, 85) | ↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑ |
mstore(add(ptr, 0x40), bytecodeHash)
mstore(add(ptr, 0x20), salt)
mstore(ptr, deployer) // Right-aligned with 12 preceding garbage bytes
let start := add(ptr, 0x0b) // The hashed data starts at the final garbage byte which we will set to 0xff
mstore8(start, 0xff)
addr := keccak256(start, 85)
}
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/cryptography/ECDSA.sol)
pragma solidity ^0.8.0;
import "../Strings.sol";
/**
* @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
*
* These functions can be used to verify that a message was signed by the holder
* of the private keys of a given address.
*/
library ECDSA {
enum RecoverError {
NoError,
InvalidSignature,
InvalidSignatureLength,
InvalidSignatureS,
InvalidSignatureV // Deprecated in v4.8
}
function _throwError(RecoverError error) private pure {
if (error == RecoverError.NoError) {
return; // no error: do nothing
} else if (error == RecoverError.InvalidSignature) {
revert("ECDSA: invalid signature");
} else if (error == RecoverError.InvalidSignatureLength) {
revert("ECDSA: invalid signature length");
} else if (error == RecoverError.InvalidSignatureS) {
revert("ECDSA: invalid signature 's' value");
}
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature` or error string. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise
* be too long), and then calling {toEthSignedMessageHash} on it.
*
* Documentation for signature generation:
* - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
* - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
*
* _Available since v4.3._
*/
function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
if (signature.length == 65) {
bytes32 r;
bytes32 s;
uint8 v;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
/// @solidity memory-safe-assembly
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
return tryRecover(hash, v, r, s);
} else {
return (address(0), RecoverError.InvalidSignatureLength);
}
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature`. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise
* be too long), and then calling {toEthSignedMessageHash} on it.
*/
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, signature);
_throwError(error);
return recovered;
}
/**
* @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
*
* See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
*
* _Available since v4.3._
*/
function tryRecover(
bytes32 hash,
bytes32 r,
bytes32 vs
) internal pure returns (address, RecoverError) {
bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
uint8 v = uint8((uint256(vs) >> 255) + 27);
return tryRecover(hash, v, r, s);
}
/**
* @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
*
* _Available since v4.2._
*/
function recover(
bytes32 hash,
bytes32 r,
bytes32 vs
) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, r, vs);
_throwError(error);
return recovered;
}
/**
* @dev Overload of {ECDSA-tryRecover} that receives the `v`,
* `r` and `s` signature fields separately.
*
* _Available since v4.3._
*/
function tryRecover(
bytes32 hash,
uint8 v,
bytes32 r,
bytes32 s
) internal pure returns (address, RecoverError) {
// EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
// unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
// the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
// signatures from current libraries generate a unique signature with an s-value in the lower half order.
//
// If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
// with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
// vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
// these malleable signatures as well.
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
return (address(0), RecoverError.InvalidSignatureS);
}
// If the signature is valid (and not malleable), return the signer address
address signer = ecrecover(hash, v, r, s);
if (signer == address(0)) {
return (address(0), RecoverError.InvalidSignature);
}
return (signer, RecoverError.NoError);
}
/**
* @dev Overload of {ECDSA-recover} that receives the `v`,
* `r` and `s` signature fields separately.
*/
function recover(
bytes32 hash,
uint8 v,
bytes32 r,
bytes32 s
) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, v, r, s);
_throwError(error);
return recovered;
}
/**
* @dev Returns an Ethereum Signed Message, created from a `hash`. This
* produces hash corresponding to the one signed with the
* https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
* JSON-RPC method as part of EIP-191.
*
* See {recover}.
*/
function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
// 32 is the length in bytes of hash,
// enforced by the type signature above
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
}
/**
* @dev Returns an Ethereum Signed Message, created from `s`. This
* produces hash corresponding to the one signed with the
* https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
* JSON-RPC method as part of EIP-191.
*
* See {recover}.
*/
function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s));
}
/**
* @dev Returns an Ethereum Signed Typed Data, created from a
* `domainSeparator` and a `structHash`. This produces hash corresponding
* to the one signed with the
* https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
* JSON-RPC method as part of EIP-712.
*
* See {recover}.
*/
function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/Math.sol)
pragma solidity ^0.8.0;
/**
* @dev Standard math utilities missing in the Solidity language.
*/
library Math {
enum Rounding {
Down, // Toward negative infinity
Up, // Toward infinity
Zero // Toward zero
}
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a > b ? a : b;
}
/**
* @dev Returns the smallest of two numbers.
*/
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow.
return (a & b) + (a ^ b) / 2;
}
/**
* @dev Returns the ceiling of the division of two numbers.
*
* This differs from standard division with `/` in that it rounds up instead
* of rounding down.
*/
function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b - 1) / b can overflow on addition, so we distribute.
return a == 0 ? 0 : (a - 1) / b + 1;
}
/**
* @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
* @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
* with further edits by Uniswap Labs also under MIT license.
*/
function mulDiv(
uint256 x,
uint256 y,
uint256 denominator
) internal pure returns (uint256 result) {
unchecked {
// 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
// use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
// variables such that product = prod1 * 2^256 + prod0.
uint256 prod0; // Least significant 256 bits of the product
uint256 prod1; // Most significant 256 bits of the product
assembly {
let mm := mulmod(x, y, not(0))
prod0 := mul(x, y)
prod1 := sub(sub(mm, prod0), lt(mm, prod0))
}
// Handle non-overflow cases, 256 by 256 division.
if (prod1 == 0) {
return prod0 / denominator;
}
// Make sure the result is less than 2^256. Also prevents denominator == 0.
require(denominator > prod1);
///////////////////////////////////////////////
// 512 by 256 division.
///////////////////////////////////////////////
// Make division exact by subtracting the remainder from [prod1 prod0].
uint256 remainder;
assembly {
// Compute remainder using mulmod.
remainder := mulmod(x, y, denominator)
// Subtract 256 bit number from 512 bit number.
prod1 := sub(prod1, gt(remainder, prod0))
prod0 := sub(prod0, remainder)
}
// Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
// See https://cs.stackexchange.com/q/138556/92363.
// Does not overflow because the denominator cannot be zero at this stage in the function.
uint256 twos = denominator & (~denominator + 1);
assembly {
// Divide denominator by twos.
denominator := div(denominator, twos)
// Divide [prod1 prod0] by twos.
prod0 := div(prod0, twos)
// Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
twos := add(div(sub(0, twos), twos), 1)
}
// Shift in bits from prod1 into prod0.
prod0 |= prod1 * twos;
// Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
// that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
// four bits. That is, denominator * inv = 1 mod 2^4.
uint256 inverse = (3 * denominator) ^ 2;
// Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
// in modular arithmetic, doubling the correct bits in each step.
inverse *= 2 - denominator * inverse; // inverse mod 2^8
inverse *= 2 - denominator * inverse; // inverse mod 2^16
inverse *= 2 - denominator * inverse; // inverse mod 2^32
inverse *= 2 - denominator * inverse; // inverse mod 2^64
inverse *= 2 - denominator * inverse; // inverse mod 2^128
inverse *= 2 - denominator * inverse; // inverse mod 2^256
// Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
// This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
// less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
// is no longer required.
result = prod0 * inverse;
return result;
}
}
/**
* @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
*/
function mulDiv(
uint256 x,
uint256 y,
uint256 denominator,
Rounding rounding
) internal pure returns (uint256) {
uint256 result = mulDiv(x, y, denominator);
if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
result += 1;
}
return result;
}
/**
* @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
*
* Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
*/
function sqrt(uint256 a) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
// For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
//
// We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
// `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
//
// This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
// → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
// → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
//
// Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
uint256 result = 1 << (log2(a) >> 1);
// At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
// since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
// every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
// into the expected uint128 result.
unchecked {
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
return min(result, a / result);
}
}
/**
* @notice Calculates sqrt(a), following the selected rounding direction.
*/
function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = sqrt(a);
return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
}
}
/**
* @dev Return the log in base 2, rounded down, of a positive value.
* Returns 0 if given 0.
*/
function log2(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >> 128 > 0) {
value >>= 128;
result += 128;
}
if (value >> 64 > 0) {
value >>= 64;
result += 64;
}
if (value >> 32 > 0) {
value >>= 32;
result += 32;
}
if (value >> 16 > 0) {
value >>= 16;
result += 16;
}
if (value >> 8 > 0) {
value >>= 8;
result += 8;
}
if (value >> 4 > 0) {
value >>= 4;
result += 4;
}
if (value >> 2 > 0) {
value >>= 2;
result += 2;
}
if (value >> 1 > 0) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 2, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log2(value);
return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
}
}
/**
* @dev Return the log in base 10, rounded down, of a positive value.
* Returns 0 if given 0.
*/
function log10(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >= 10**64) {
value /= 10**64;
result += 64;
}
if (value >= 10**32) {
value /= 10**32;
result += 32;
}
if (value >= 10**16) {
value /= 10**16;
result += 16;
}
if (value >= 10**8) {
value /= 10**8;
result += 8;
}
if (value >= 10**4) {
value /= 10**4;
result += 4;
}
if (value >= 10**2) {
value /= 10**2;
result += 2;
}
if (value >= 10**1) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 10, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log10(value);
return result + (rounding == Rounding.Up && 10**result < value ? 1 : 0);
}
}
/**
* @dev Return the log in base 256, rounded down, of a positive value.
* Returns 0 if given 0.
*
* Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
*/
function log256(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >> 128 > 0) {
value >>= 128;
result += 16;
}
if (value >> 64 > 0) {
value >>= 64;
result += 8;
}
if (value >> 32 > 0) {
value >>= 32;
result += 4;
}
if (value >> 16 > 0) {
value >>= 16;
result += 2;
}
if (value >> 8 > 0) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 10, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log256(value);
return result + (rounding == Rounding.Up && 1 << (result * 8) < value ? 1 : 0);
}
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Strings.sol)
pragma solidity ^0.8.0;
import "./math/Math.sol";
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _SYMBOLS = "0123456789abcdef";
uint8 private constant _ADDRESS_LENGTH = 20;
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
unchecked {
uint256 length = Math.log10(value) + 1;
string memory buffer = new string(length);
uint256 ptr;
/// @solidity memory-safe-assembly
assembly {
ptr := add(buffer, add(32, length))
}
while (true) {
ptr--;
/// @solidity memory-safe-assembly
assembly {
mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
}
value /= 10;
if (value == 0) break;
}
return buffer;
}
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
unchecked {
return toHexString(value, Math.log256(value) + 1);
}
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
/**
* @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
*/
function toHexString(address addr) internal pure returns (string memory) {
return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.12;
import "../library/UserOperation.sol";
interface IAccount {
/**
* Validate user's signature and nonce
* the entryPoint will make the call to the recipient only if this validation call returns successfully.
* signature failure should be reported by returning SIG_VALIDATION_FAILED (1).
* This allows making a "simulation call" without a valid signature
* Other failures (e.g. nonce mismatch, or invalid signature format) should still revert to signal failure.
*
* @dev Must validate caller is the entryPoint.
* Must validate the signature and nonce
* @param userOp the operation that is about to be executed.
* @param userOpHash hash of the user's request data. can be used as the basis for signature.
* @param aggregator the aggregator used to validate the signature. NULL for non-aggregated signature accounts.
* @param missingAccountFunds missing funds on the account's deposit in the entrypoint.
* This is the minimum amount to transfer to the sender(entryPoint) to be able to make the call.
* The excess is left as a deposit in the entrypoint, for future calls.
* can be withdrawn anytime using "entryPoint.withdrawTo()"
* In case there is a paymaster in the request (or the current deposit is high enough), this value will be zero.
* @return deadline the last block timestamp this operation is valid, or zero if it is valid indefinitely.
* signature failure is returned as SIG_VALIDATION_FAILED value (1)
* Note that the validation code cannot use block.timestamp (or block.number) directly.
*/
function validateUserOp(
UserOperation calldata userOp,
bytes32 userOpHash,
address aggregator,
uint256 missingAccountFunds
) external returns (uint256 deadline);
function validateUserOpWithoutSig(
UserOperation calldata userOp,
bytes32 userOpHash,
address aggregator,
uint256 missingAccountFunds
) external returns (uint256 deadline);
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.12;
contract ISignatureValidatorConstants {
// bytes4(keccak256("isValidSignature(bytes,bytes)")
bytes4 internal constant EIP1271_MAGIC_VALUE = 0x20c13b0b;
}
abstract contract ISignatureValidator is ISignatureValidatorConstants {
/**
* @dev Should return whether the signature provided is valid for the provided data
* @param _data Arbitrary length data signed on the behalf of address(this)
* @param _signature Signature byte array associated with _data
*
* MUST return the bytes4 magic value 0x20c13b0b when function passes.
* MUST NOT modify state (using STATICCALL for solc < 0.5, view modifier for solc > 0.5)
* MUST allow external calls
*/
function isValidSignature(
bytes memory _data,
bytes memory _signature
) public view virtual returns (bytes4);
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.12;
/**
* A wrapper factory contract to deploy SmartAccount as an Account-Abstraction wallet contract.
*/
interface ISmartAccountProxy {
function masterCopy() external view returns (address);
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.12;
interface IStorage {
struct bundlerInformation {
address bundler;
uint256 registeTime;
}
event UnrestrictedWalletSet(bool allowed);
event UnrestrictedBundlerSet(bool allowed);
event UnrestrictedModuleSet(bool allowed);
event WalletFactoryWhitelistSet(address walletProxyFactory);
event BundlerWhitelistSet(address indexed bundler, bool allowed);
event ModuleWhitelistSet(address indexed module, bool allowed);
function officialBundlerWhiteList(
address bundler
) external view returns (bool);
function moduleWhiteList(address module) external view returns (bool);
function setUnrestrictedWallet(bool allowed) external;
function setUnrestrictedBundler(bool allowed) external;
function setUnrestrictedModule(bool allowed) external;
function setBundlerOfficialWhitelist(
address bundler,
bool allowed
) external;
function setWalletProxyFactoryWhitelist(address walletFactory) external;
function setModuleWhitelist(address module, bool allowed) external;
function validateModuleWhitelist(address module) external;
function validateWalletWhitelist(address sender) external view;
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.12;
/* solhint-disable no-inline-assembly */
/**
* User Operation struct
* @param sender the sender account of this request
* @param nonce unique value the sender uses to verify it is not a replay.
* @param initCode if set, the account contract will be created by this constructor
* @param callData the method call to execute on this account.
* @param verificationGasLimit gas used for validateUserOp and validatePaymasterUserOp
* @param preVerificationGas gas not calculated by the handleOps method, but added to the gas paid. Covers batch overhead.
* @param maxFeePerGas same as EIP-1559 gas parameter
* @param maxPriorityFeePerGas same as EIP-1559 gas parameter
* @param paymasterAndData if set, this field hold the paymaster address and "paymaster-specific-data". the paymaster will pay for the transaction instead of the sender
* @param signature sender-verified signature over the entire request, the EntryPoint address and the chain ID.
*/
struct UserOperation {
address sender;
uint256 nonce;
bytes initCode;
bytes callData;
uint256 callGasLimit;
uint256 verificationGasLimit;
uint256 preVerificationGas;
uint256 maxFeePerGas;
uint256 maxPriorityFeePerGas;
bytes paymasterAndData;
bytes signature;
}
library UserOperationLib {
function getSender(
UserOperation calldata userOp
) internal pure returns (address) {
address data;
//read sender from userOp, which is first userOp member (saves 800 gas...)
assembly {
data := calldataload(userOp)
}
return address(uint160(data));
}
//relayer/block builder might submit the TX with higher priorityFee, but the user should not
// pay above what he signed for.
function gasPrice(
UserOperation calldata userOp
) internal view returns (uint256) {
unchecked {
uint256 maxFeePerGas = userOp.maxFeePerGas;
uint256 maxPriorityFeePerGas = userOp.maxPriorityFeePerGas;
if (maxFeePerGas == maxPriorityFeePerGas) {
//legacy mode (for networks that don't support basefee opcode)
return maxFeePerGas;
}
return min(maxFeePerGas, maxPriorityFeePerGas + block.basefee);
}
}
function pack(
UserOperation calldata userOp
) internal pure returns (bytes memory ret) {
address sender = getSender(userOp);
uint256 nonce = userOp.nonce;
bytes32 hashInitCode = calldataKeccak(userOp.initCode);
bytes32 hashCallData = calldataKeccak(userOp.callData);
uint256 callGasLimit = userOp.callGasLimit;
uint256 verificationGasLimit = userOp.verificationGasLimit;
uint256 preVerificationGas = userOp.preVerificationGas;
uint256 maxFeePerGas = userOp.maxFeePerGas;
uint256 maxPriorityFeePerGas = userOp.maxPriorityFeePerGas;
bytes32 hashPaymasterAndData = calldataKeccak(userOp.paymasterAndData);
return
abi.encode(
sender,
nonce,
hashInitCode,
hashCallData,
callGasLimit,
verificationGasLimit,
preVerificationGas,
maxFeePerGas,
maxPriorityFeePerGas,
hashPaymasterAndData
);
}
function calldataKeccak(
bytes calldata data
) internal pure returns (bytes32 ret) {
assembly {
let mem := mload(0x40)
let len := data.length
calldatacopy(mem, data.offset, len)
ret := keccak256(mem, len)
}
}
function hash(
UserOperation calldata userOp
) internal pure returns (bytes32) {
return keccak256(pack(userOp));
}
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.12;
import "../common/Enum.sol";
/// @title Executor - A contract that can execute transactions
contract Executor {
struct ExecuteParams {
bool allowFailed;
address to;
uint256 value;
bytes data;
bytes nestedCalls; // ExecuteParams encoded as bytes
}
event HandleSuccessExternalCalls();
event HandleFailedExternalCalls(bytes revertReason);
function execute(
ExecuteParams memory params,
Enum.Operation operation,
uint256 txGas
) internal returns (bool success) {
bytes memory result;
if (operation == Enum.Operation.DelegateCall) {
// solhint-disable-next-line no-inline-assembly
(success, result) = params.to.delegatecall{gas: txGas}(params.data);
} else {
// solhint-disable-next-line no-inline-assembly
(success, result) = payable(params.to).call{
gas: txGas,
value: params.value
}(params.data);
}
if (!success) {
if (!params.allowFailed) {
assembly {
revert(add(result, 32), mload(result))
}
}
}
}
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.12;
import "../common/SelfAuthorized.sol";
/// @title Fallback Manager - A contract that manages fallback calls made to this contract
contract FallbackManager is SelfAuthorized {
event ChangedFallbackHandler(address handler);
// keccak256("fallback_manager.handler.address")
bytes32 internal constant FALLBACK_HANDLER_STORAGE_SLOT =
0x6c9a6c4a39284e37ed1cf53d337577d14212a4870fb976a4366c693b939918d5;
function getFallbackHandler()
public
view
returns (address fallbackHandler)
{
bytes32 slot = FALLBACK_HANDLER_STORAGE_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
let encoded := sload(slot)
fallbackHandler := shr(96, encoded)
}
}
/// @dev Allows to add a contract to handle fallback calls.
/// Only fallback calls without value and with data will be forwarded.
/// This can only be done via a Safe transaction.
/// @param handler contract to handle fallbacks calls.
function setFallbackHandler(address handler) external authorized {
setFallbackHandler(handler, false);
emit ChangedFallbackHandler(handler);
}
function setFallbackHandler(address handler, bool delegate) internal {
bytes32 slot = FALLBACK_HANDLER_STORAGE_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
let encoded := or(shl(96, handler), delegate)
sstore(slot, encoded)
}
}
function initializeFallbackHandler(address handler) internal {
bytes32 slot = FALLBACK_HANDLER_STORAGE_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
let encoded := shl(96, handler)
sstore(slot, encoded)
}
}
// solhint-disable-next-line payable-fallback,no-complex-fallback
fallback() external {
assembly {
// Load handler and delegate flag from storage
let encoded := sload(FALLBACK_HANDLER_STORAGE_SLOT)
let handler := shr(96, encoded)
let delegate := and(encoded, 1)
// Copy calldata to memory
calldatacopy(0, 0, calldatasize())
// If delegate flag is set, delegate the call to the handler
switch delegate
case 0 {
mstore(calldatasize(), shl(96, caller()))
let success := call(
gas(),
handler,
0,
0,
add(calldatasize(), 20),
0,
0
)
returndatacopy(0, 0, returndatasize())
if iszero(success) {
revert(0, returndatasize())
}
return(0, returndatasize())
}
case 1 {
let result := delegatecall(
gas(),
handler,
0,
calldatasize(),
0,
0
)
returndatacopy(0, 0, returndatasize())
switch result
case 0 {
revert(0, returndatasize())
}
default {
return(0, returndatasize())
}
}
}
}
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.12;
import "../common/Enum.sol";
import "../common/SelfAuthorized.sol";
import "./Executor.sol";
interface Guard {
function checkTransaction(
address to,
uint256 value,
bytes memory data,
Enum.Operation operation
) external;
function checkAfterExecution(bool success) external;
}
/// @title Fallback Manager - A contract that manages fallback calls made to this contract
contract GuardManager is SelfAuthorized, Executor {
event ChangedGuard(address guard);
// keccak256("guard_manager.guard.address")
bytes32 internal constant GUARD_STORAGE_SLOT =
0x4a204f620c8c5ccdca3fd54d003badd85ba500436a431f0cbda4f558c93c34c8;
function getGuard() public view returns (address guard) {
bytes32 slot = GUARD_STORAGE_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
guard := sload(slot)
}
}
function setGuard(address guard) external authorized {
bytes32 slot = GUARD_STORAGE_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
sstore(slot, guard)
}
emit ChangedGuard(guard);
}
// execute from this contract
function execTransactionBatch(
bytes memory executeParamBytes
) external authorized {
executeWithGuardBatch(abi.decode(executeParamBytes, (ExecuteParams[])));
}
function execTransactionRevertOnFail(
bytes memory executeParamBytes
) external authorized {
execTransactionBatchRevertOnFail(
abi.decode(executeParamBytes, (ExecuteParams[]))
);
}
function executeWithGuard(
address to,
uint256 value,
bytes calldata data
) internal {
address guard = getGuard();
if (guard != address(0)) {
Guard(guard).checkTransaction(to, value, data, Enum.Operation.Call);
Guard(guard).checkAfterExecution(
execute(
ExecuteParams(false, to, value, data, ""),
Enum.Operation.Call,
gasleft()
)
);
} else {
execute(
ExecuteParams(false, to, value, data, ""),
Enum.Operation.Call,
gasleft()
);
}
}
function execTransactionBatchRevertOnFail(
ExecuteParams[] memory _params
) internal {
address guard = getGuard();
uint256 length = _params.length;
if (guard == address(0)) {
for (uint256 i = 0; i < length; ) {
ExecuteParams memory param = _params[i];
execute(param, Enum.Operation.Call, gasleft());
if (param.nestedCalls.length > 0) {
try
this.execTransactionRevertOnFail(param.nestedCalls)
{} catch (bytes memory returnData) {
revert(string(returnData));
}
}
unchecked {
++i;
}
}
} else {
for (uint256 i = 0; i < length; ) {
ExecuteParams memory param = _params[i];
Guard(guard).checkTransaction(
param.to,
param.value,
param.data,
Enum.Operation.Call
);
Guard(guard).checkAfterExecution(
execute(param, Enum.Operation.Call, gasleft())
);
if (param.nestedCalls.length > 0) {
try
this.execTransactionRevertOnFail(param.nestedCalls)
{} catch (bytes memory returnData) {
revert(string(returnData));
}
}
unchecked {
++i;
}
}
}
}
function executeWithGuardBatch(ExecuteParams[] memory _params) internal {
address guard = getGuard();
uint256 length = _params.length;
if (guard == address(0)) {
for (uint256 i = 0; i < length; ) {
ExecuteParams memory param = _params[i];
bool success = execute(param, Enum.Operation.Call, gasleft());
if (success) {
emit HandleSuccessExternalCalls();
}
if (param.nestedCalls.length > 0) {
try this.execTransactionBatch(param.nestedCalls) {} catch (
bytes memory returnData
) {
emit HandleFailedExternalCalls(returnData);
}
}
unchecked {
++i;
}
}
} else {
for (uint256 i = 0; i < length; ) {
ExecuteParams memory param = _params[i];
Guard(guard).checkTransaction(
param.to,
param.value,
param.data,
Enum.Operation.Call
);
bool success = execute(param, Enum.Operation.Call, gasleft());
if (success) {
emit HandleSuccessExternalCalls();
}
Guard(guard).checkAfterExecution(success);
if (param.nestedCalls.length > 0) {
try this.execTransactionBatch(param.nestedCalls) {} catch (
bytes memory returnData
) {
emit HandleFailedExternalCalls(returnData);
}
}
unchecked {
++i;
}
}
}
}
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.12;
import "../common/Enum.sol";
import "../common/SelfAuthorized.sol";
import "./Executor.sol";
/// @title Module Manager - A contract that manages modules that can execute transactions via this contract
contract ModuleManager is SelfAuthorized, Executor {
event EnabledModule(address module);
event DisabledModule(address module);
event ExecutionFromModuleSuccess(address module);
event ExecutionFromModuleFailure(address module);
address internal constant SENTINEL_MODULES = address(0x1);
mapping(address => address) internal modules;
function initializeModules() internal {
modules[SENTINEL_MODULES] = SENTINEL_MODULES;
}
function enableModule(address module) public authorized {
// Module address cannot be null or sentinel.
require(module != address(0) && module != SENTINEL_MODULES, "GS101");
// Module cannot be added twice.
require(modules[module] == address(0), "GS102");
modules[module] = modules[SENTINEL_MODULES];
modules[SENTINEL_MODULES] = module;
emit EnabledModule(module);
}
/// @dev Allows to remove a module from the whitelist.
/// This can only be done via a Safe transaction.
/// @notice Disables the module `module` for the Safe.
/// @param prevModule Module that pointed to the module to be removed in the linked list
/// @param module Module to be removed.
function disableModule(
address prevModule,
address module
) public authorized {
// Validate module address and check that it corresponds to module index.
require(module != address(0) && module != SENTINEL_MODULES, "GS101");
require(modules[prevModule] == module, "GS103");
modules[prevModule] = modules[module];
modules[module] = address(0);
emit DisabledModule(module);
}
/// @dev Returns if an module is enabled
/// @return True if the module is enabled
function isModuleEnabled(address module) public view returns (bool) {
return SENTINEL_MODULES != module && modules[module] != address(0);
}
/// @dev Allows a Module to execute a Safe transaction without any further confirmations.
/// @param to Destination address of module transaction.
/// @param value Ether value of module transaction.
/// @param data Data payload of module transaction.
/// @param operation Operation type of module transaction.
function execTransactionFromModule(
address to,
uint256 value,
bytes calldata data,
Enum.Operation operation
) public virtual {
// Only whitelisted modules are allowed.
require(modules[msg.sender] != address(0), "GS104");
// Execute transaction without further confirmations.
if (
execute(
ExecuteParams(false, to, value, data, ""),
operation,
gasleft()
)
) emit ExecutionFromModuleSuccess(msg.sender);
else emit ExecutionFromModuleFailure(msg.sender);
}
/// @dev Allows a Module to execute a Safe transaction without any further confirmations and return data
/// @param to Destination address of module transaction.
/// @param value Ether value of module transaction.
/// @param data Data payload of module transaction.
/// @param operation Operation type of module transaction.
function execTransactionFromModuleReturnData(
address to,
uint256 value,
bytes calldata data,
Enum.Operation operation
) public returns (bytes memory returnData) {
execTransactionFromModule(to, value, data, operation);
// solhint-disable-next-line no-inline-assembly
assembly {
// Load free memory location
let ptr := mload(0x40)
// We allocate memory for the return data by setting the free memory location to
// current free memory location + data size + 32 bytes for data size value
mstore(0x40, add(ptr, add(returndatasize(), 0x20)))
// Store the size
mstore(ptr, returndatasize())
// Store the data
returndatacopy(add(ptr, 0x20), 0, returndatasize())
// Point the return data to the correct memory location
returnData := ptr
}
}
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.12;
contract OwnerManager {
event AAOwnerSet(address owner);
address internal owner;
uint256 public nonce;
modifier onlyOwner() {
require(isOwner(msg.sender), "not call by owner");
_;
}
function initializeOwners(address _owner) internal {
owner = _owner;
emit AAOwnerSet(_owner);
}
function isOwner(address _owner) public view returns (bool) {
return owner == _owner;
}
function getOwner() public view returns (address) {
return owner;
}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.12;
import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "../../interfaces/ISignatureValidator.sol";
import "../../interfaces/IAccount.sol";
import "../common/Enum.sol";
import "../common/SignatureDecoder.sol";
import "./OwnerManager.sol";
contract SignatureManager is
IAccount,
ISignatureValidatorConstants,
Enum,
OwnerManager,
SignatureDecoder
{
using UserOperationLib for UserOperation;
uint256 internal constant NONCE_VALIDATION_FAILED = 2;
bytes32 internal immutable HASH_NAME;
bytes32 internal immutable HASH_VERSION;
bytes32 internal immutable TYPE_HASH;
address internal immutable ADDRESS_THIS;
bytes32 internal immutable EIP712_ORDER_STRUCT_SCHEMA_HASH;
uint256 internal constant SIG_VALIDATION_FAILED = 1;
struct SignMessage {
address sender;
uint256 nonce;
bytes initCode;
bytes callData;
uint256 callGasLimit;
uint256 verificationGasLimit;
uint256 preVerificationGas;
uint256 maxFeePerGas;
uint256 maxPriorityFeePerGas;
bytes paymasterAndData;
address EntryPoint;
uint256 sigTime;
}
/* solhint-enable var-name-mixedcase */
constructor(string memory name, string memory version) {
HASH_NAME = keccak256(bytes(name));
HASH_VERSION = keccak256(bytes(version));
TYPE_HASH = keccak256(
"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
);
ADDRESS_THIS = address(this);
EIP712_ORDER_STRUCT_SCHEMA_HASH = keccak256(
abi.encodePacked(
"SignMessage(",
"address sender,",
"uint256 nonce,",
"bytes initCode,",
"bytes callData,",
"uint256 callGasLimit,",
"uint256 verificationGasLimit,",
"uint256 preVerificationGas,",
"uint256 maxFeePerGas,",
"uint256 maxPriorityFeePerGas,",
"bytes paymasterAndData,",
"address EntryPoint,",
"uint256 sigTime",
")"
)
);
}
function getUOPHash(
SignatureType sigType,
address EntryPoint,
UserOperation calldata userOp
) public view returns (bytes32) {
return
keccak256(
abi.encode(
sigType == SignatureType.EIP712Type
? EIP712_ORDER_STRUCT_SCHEMA_HASH
: bytes32(block.chainid),
userOp.getSender(),
userOp.nonce,
keccak256(userOp.initCode),
keccak256(userOp.callData),
userOp.callGasLimit,
userOp.verificationGasLimit,
userOp.preVerificationGas,
userOp.maxFeePerGas,
userOp.maxPriorityFeePerGas,
keccak256(userOp.paymasterAndData),
EntryPoint,
uint256(bytes32(userOp.signature[1:33]))
)
);
}
function getUOPSignedHash(
SignatureType sigType,
address EntryPoint,
UserOperation calldata userOp
) public view returns (bytes32) {
return
sigType == SignatureType.EIP712Type
? ECDSA.toTypedDataHash(
keccak256(
abi.encode(
TYPE_HASH,
HASH_NAME,
HASH_VERSION,
block.chainid,
ADDRESS_THIS
)
),
keccak256(
abi.encode(
EIP712_ORDER_STRUCT_SCHEMA_HASH,
userOp.getSender(),
userOp.nonce,
keccak256(userOp.initCode),
keccak256(userOp.callData),
userOp.callGasLimit,
userOp.verificationGasLimit,
userOp.preVerificationGas,
userOp.maxFeePerGas,
userOp.maxPriorityFeePerGas,
keccak256(userOp.paymasterAndData),
EntryPoint,
uint256(bytes32(userOp.signature[1:33]))
)
)
)
: ECDSA.toEthSignedMessageHash(
keccak256(
abi.encode(
bytes32(block.chainid),
userOp.getSender(),
userOp.nonce,
keccak256(userOp.initCode),
keccak256(userOp.callData),
userOp.callGasLimit,
userOp.verificationGasLimit,
userOp.preVerificationGas,
userOp.maxFeePerGas,
userOp.maxPriorityFeePerGas,
keccak256(userOp.paymasterAndData),
EntryPoint,
uint256(bytes32(userOp.signature[1:33]))
)
)
);
}
function validateUserOp(
UserOperation calldata userOp,
bytes32,
address,
uint256 missingAccountFunds
) public virtual returns (uint256) {
if (missingAccountFunds != 0) {
payable(msg.sender).call{
value: missingAccountFunds,
gas: type(uint256).max
}("");
}
unchecked {
if (userOp.nonce != nonce++) {
return NONCE_VALIDATION_FAILED;
}
}
if (
ECDSA.recover(
getUOPSignedHash(
SignatureType(uint8(bytes1(userOp.signature[0:1]))),
msg.sender,
userOp
),
userOp.signature[33:]
) != owner
) {
return SIG_VALIDATION_FAILED;
} else {
return uint256(bytes32(userOp.signature[1:33]));
}
}
function validateUserOpWithoutSig(
UserOperation calldata userOp,
bytes32,
address,
uint256 missingAccountFunds
) public virtual returns (uint256) {
if (missingAccountFunds != 0) {
payable(msg.sender).call{
value: missingAccountFunds,
gas: type(uint256).max
}("");
}
unchecked {
if (userOp.nonce != nonce++) {
return NONCE_VALIDATION_FAILED;
}
}
if (
ECDSA.recover(
getUOPSignedHash(
SignatureType(uint8(bytes1(userOp.signature[0:1]))),
msg.sender,
userOp
),
userOp.signature[33:]
) != owner
) {
return uint256(bytes32(userOp.signature[1:33]));
} else {
return uint256(bytes32(userOp.signature[1:33]));
}
}
function isValidSignature(
bytes32 _hash,
bytes calldata _signature
) external view returns (bytes4) {
if (isOwner(ECDSA.recover(_hash, _signature))) {
return 0x1626ba7e;
} else {
return 0xffffffff;
}
}
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.12;
/// @title Enum - Collection of enums
contract Enum {
enum Operation {
Call,
DelegateCall
}
enum SignatureType {
EIP712Type,
EIP191Type
}
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.12;
/// @title EtherPaymentFallback - A contract that has a fallback to accept ether payments
/// @author Richard Meissner - <[email protected]>
contract EtherPaymentFallback {
event SafeReceived(address indexed sender, uint256 value);
/// @dev Fallback function accepts Ether transactions.
receive() external payable {
emit SafeReceived(msg.sender, msg.value);
}
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.12;
/// @title SecuredTokenTransfer - Secure token transfer
/// @author Richard Meissner - <[email protected]>
contract SecuredTokenTransfer {
/// @dev Transfers a token and returns if it was a success
/// @param token Token that should be transferred
/// @param receiver Receiver to whom the token should be transferred
/// @param amount The amount of tokens that should be transferred
function transferToken(
address token,
address receiver,
uint256 amount
) internal returns (bool transferred) {
// 0xa9059cbb - keccack("transfer(address,uint256)")
bytes memory data = abi.encodeWithSelector(
0xa9059cbb,
receiver,
amount
);
// solhint-disable-next-line no-inline-assembly
assembly {
// We write the return value to scratch space.
// See https://docs.soliditylang.org/en/v0.7.6/internals/layout_in_memory.html#layout-in-memory
let success := call(
sub(gas(), 10000),
token,
0,
add(data, 0x20),
mload(data),
0,
0x20
)
switch returndatasize()
case 0 {
transferred := success
}
case 0x20 {
transferred := iszero(or(iszero(success), iszero(mload(0))))
}
default {
transferred := 0
}
}
}
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.12;
import "../common/SelfAuthorized.sol";
/// @title SelfAuthorized - authorizes current contract to perform actions
/// @author Richard Meissner - <[email protected]>
contract SelfAuthorized {
function requireSelfCall() private view {
require(msg.sender == address(this), "GS031");
}
modifier authorized() {
// This is a function call as it minimized the bytecode size
requireSelfCall();
_;
}
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.12;
/// @title SignatureDecoder - Decodes signatures that a encoded as bytes
/// @author Richard Meissner - <[email protected]>
contract SignatureDecoder {
/// @dev divides bytes signature into `uint8 v, bytes32 r, bytes32 s`.
/// @notice Make sure to peform a bounds check for @param pos, to avoid out of bounds access on @param signatures
/// @param pos which signature to read. A prior bounds check of this parameter should be performed, to avoid out of bounds access
/// @param signatures concatenated rsv signatures
function signatureSplit(
bytes memory signatures,
uint256 pos
) internal pure returns (uint8 v, bytes32 r, bytes32 s) {
// The signature format is a compact form of:
// {bytes32 r}{bytes32 s}{uint8 v}
// Compact means, uint8 is not padded to 32 bytes.
// solhint-disable-next-line no-inline-assembly
assembly {
let signaturePos := mul(0x41, pos)
r := mload(add(signatures, add(signaturePos, 0x20)))
s := mload(add(signatures, add(signaturePos, 0x40)))
// Here we are loading the last 32 bytes, including 31 bytes
// of 's'. There is no 'mload8' to do this.
//
// 'byte' is not working due to the Solidity parser, so lets
// use the second best option, 'and'
v := and(mload(add(signatures, add(signaturePos, 0x41))), 0xff)
}
}
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.12;
import "./SelfAuthorized.sol";
/// @title Singleton - Base for singleton contracts (should always be first super contract)
/// This contract is tightly coupled to our proxy contract
contract Singleton is SelfAuthorized {
event ImplementUpdated(address indexed implement);
address internal singleton;
function updateImplement(address implement) external authorized {
singleton = implement;
emit ImplementUpdated(implement);
}
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.12;
import "../interfaces/IStorage.sol";
import "./base/SignatureManager.sol";
import "./base/ModuleManager.sol";
import "./base/OwnerManager.sol";
import "./base/FallbackManager.sol";
import "./base/GuardManager.sol";
import "./common/EtherPaymentFallback.sol";
import "./common/Singleton.sol";
import "./common/SignatureDecoder.sol";
import "./common/SecuredTokenTransfer.sol";
contract SmartAccount is
EtherPaymentFallback,
Singleton,
ModuleManager,
OwnerManager,
SignatureDecoder,
SecuredTokenTransfer,
FallbackManager,
GuardManager,
SignatureManager
{
address public immutable EntryPoint;
address public immutable FallbackHandler;
constructor(
address _EntryPoint,
address _FallbackHandler,
string memory _name,
string memory _version
) SignatureManager(_name, _version) {
EntryPoint = _EntryPoint;
FallbackHandler = _FallbackHandler;
}
modifier onlyEntryPoint() {
require(msg.sender == EntryPoint, "Not from entrypoint");
_;
}
function Initialize(address _owner) external {
require(getOwner() == address(0), "account: have set up");
initializeOwners(_owner);
initializeFallbackHandler(FallbackHandler);
initializeModules();
}
function validateUserOp(
UserOperation calldata userOp,
bytes32 userOpHash,
address aggregatorAddress,
uint256 missingAccountFunds
) public override onlyEntryPoint returns (uint256 deadline) {
deadline = super.validateUserOp(
userOp,
userOpHash,
aggregatorAddress,
missingAccountFunds
);
}
function validateUserOpWithoutSig(
UserOperation calldata userOp,
bytes32 userOpHash,
address aggregatorAddress,
uint256 missingAccountFunds
) public override onlyEntryPoint returns (uint256 deadline) {
deadline = super.validateUserOpWithoutSig(
userOp,
userOpHash,
aggregatorAddress,
missingAccountFunds
);
}
function execTransactionFromEntrypoint(
address to,
uint256 value,
bytes calldata data
) public onlyEntryPoint {
executeWithGuard(to, value, data);
}
function execTransactionFromEntrypointBatch(
ExecuteParams[] calldata _params
) external onlyEntryPoint {
executeWithGuardBatch(_params);
}
function execTransactionFromEntrypointBatchRevertOnFail(
ExecuteParams[] calldata _params
) external onlyEntryPoint {
execTransactionBatchRevertOnFail(_params);
}
function execTransactionFromModule(
address to,
uint256 value,
bytes calldata data,
Enum.Operation operation
) public override {
IStorage(EntryPoint).validateModuleWhitelist(msg.sender);
if (operation == Enum.Operation.Call) {
ModuleManager.execTransactionFromModule(to, value, data, operation);
} else {
address originalFallbackHandler = getFallbackHandler();
setFallbackHandler(msg.sender, true);
ModuleManager.execTransactionFromModule(to, value, data, operation);
setFallbackHandler(originalFallbackHandler, false);
}
}
}
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.12;
import "../interfaces/ISmartAccountProxy.sol";
/// @title SmartAccountProxy - Generic proxy contract allows to execute all transactions applying the code of a master contract.
contract SmartAccountProxy is ISmartAccountProxy {
// singleton always needs to be first declared variable, to ensure that it is at the same location in the contracts to which calls are delegated.
// To reduce deployment costs this variable is internal and needs to be retrieved via `getStorageAt`
address internal singleton;
/// @dev Constructor function sets address of singleton contract.
/// @param _singleton Singleton address.
function initialize(address _singleton, bytes memory _initdata) external {
require(singleton == address(0), "Initialized already");
require(_singleton != address(0), "Invalid singleton address provided");
singleton = _singleton;
(bool success, ) = _singleton.delegatecall(_initdata);
require(success, "init failed");
}
function masterCopy() external view returns (address) {
return singleton;
}
/// @dev Fallback function forwards all transactions and returns all received return data.
fallback() external payable {
// solhint-disable-next-line no-inline-assembly
assembly {
let _singleton := and(
sload(0),
0xffffffffffffffffffffffffffffffffffffffff
)
calldatacopy(0, 0, calldatasize())
let success := delegatecall(
gas(),
_singleton,
0,
calldatasize(),
0,
0
)
returndatacopy(0, 0, returndatasize())
if eq(success, 0) {
revert(0, returndatasize())
}
return(0, returndatasize())
}
}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.12;
import "@openzeppelin/contracts/utils/Create2.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "./SmartAccount.sol";
import "./SmartAccountProxy.sol";
/**
* A wrapper factory contract to deploy SmartAccount as an Account-Abstraction wallet contract.
*/
contract SmartAccountProxyFactory is Ownable {
event ProxyCreation(SmartAccountProxy proxy, address singleton);
event SafeSingletonSet(address safeSingleton, bool value);
mapping(address => bool) public safeSingleton;
mapping(address => bool) public walletWhiteList;
constructor(address _safeSingleton, address _owner) {
safeSingleton[_safeSingleton] = true;
_transferOwnership(_owner);
}
function setSafeSingleton(
address _safeSingleton,
bool value
) public onlyOwner {
safeSingleton[_safeSingleton] = value;
emit SafeSingletonSet(_safeSingleton, value);
}
/// @dev Allows to retrieve the runtime code of a deployed Proxy. This can be used to check that the expected Proxy was deployed.
function proxyRuntimeCode() public pure returns (bytes memory) {
return type(SmartAccountProxy).runtimeCode;
}
/// @dev Allows to retrieve the creation code used for the Proxy deployment. With this it is easily possible to calculate predicted address.
function proxyCreationCode() public pure returns (bytes memory) {
return type(SmartAccountProxy).creationCode;
}
/// @dev Allows to create new proxy contact using CREATE2 but it doesn't run the initializer.
/// This method is only meant as an utility to be called from other methods
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function deployProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) internal returns (SmartAccountProxy proxy) {
// If the initializer changes the proxy address should change too. Hashing the initializer data is cheaper than just concatinating it
bytes32 salt = keccak256(
abi.encodePacked(keccak256(initializer), saltNonce)
);
bytes memory deploymentData = abi.encodePacked(
type(SmartAccountProxy).creationCode
);
// solhint-disable-next-line no-inline-assembly
assembly {
proxy := create2(
0x0,
add(0x20, deploymentData),
mload(deploymentData),
salt
)
}
require(address(proxy) != address(0), "Create2 call failed");
walletWhiteList[address(proxy)] = true;
}
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function createProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) internal returns (SmartAccountProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
if (initializer.length > 0) {
// solhint-disable-next-line no-inline-assembly
bytes memory initdata = abi.encodeWithSelector(
SmartAccountProxy.initialize.selector,
_singleton,
initializer
);
assembly {
if eq(
call(
gas(),
proxy,
0,
add(initdata, 0x20),
mload(initdata),
0,
0
),
0
) {
revert(0, 0)
}
}
}
emit ProxyCreation(proxy, _singleton);
}
function createAccount(
address _safeSingleton,
bytes memory initializer,
uint256 salt
) public returns (address) {
require(safeSingleton[_safeSingleton], "Invalid singleton");
address addr = getAddress(_safeSingleton, initializer, salt);
uint256 codeSize = addr.code.length;
if (codeSize > 0) {
return addr;
}
return address(createProxyWithNonce(_safeSingleton, initializer, salt));
}
/**
* calculate the counterfactual address of this account as it would be returned by createAccount()
* (uses the same "create2 signature" used by SmartAccountProxyFactory.createProxyWithNonce)
*/
function getAddress(
address _safeSingleton,
bytes memory initializer,
uint256 salt
) public view returns (address) {
//copied from deployProxyWithNonce
bytes32 salt2 = keccak256(
abi.encodePacked(keccak256(initializer), salt)
);
bytes memory deploymentData = abi.encodePacked(
type(SmartAccountProxy).creationCode
);
return
Create2.computeAddress(
bytes32(salt2),
keccak256(deploymentData),
address(this)
);
}
}