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Contract Name:
CompatibilityFallbackHandler
Compiler Version
v0.7.6+commit.7338295f
Contract Source Code (Solidity)
/**
*Submitted for verification at apescan.io on 2024-10-22
*/
/**
*Submitted for verification at basescan.org on 2023-08-13
*/
// File: goerli/0xf48f2B2d2a534e402487b3ee7C18c33Aec0Fe5e4/contracts/external/GnosisSafeMath.sol
pragma solidity >=0.7.0 <0.9.0;
/**
* @title GnosisSafeMath
* @dev Math operations with safety checks that revert on error
* Renamed from SafeMath to GnosisSafeMath to avoid conflicts
* TODO: remove once open zeppelin update to solc 0.5.0
*/
library GnosisSafeMath {
/**
* @dev Multiplies two numbers, reverts on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
/**
* @dev Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
uint256 c = a - b;
return c;
}
/**
* @dev Adds two numbers, reverts on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
}
// File: goerli/0xf48f2B2d2a534e402487b3ee7C18c33Aec0Fe5e4/contracts/common/StorageAccessible.sol
pragma solidity >=0.7.0 <0.9.0;
/// @title StorageAccessible - generic base contract that allows callers to access all internal storage.
/// @notice See https://github.com/gnosis/util-contracts/blob/bb5fe5fb5df6d8400998094fb1b32a178a47c3a1/contracts/StorageAccessible.sol
contract StorageAccessible {
/**
* @dev Reads `length` bytes of storage in the currents contract
* @param offset - the offset in the current contract's storage in words to start reading from
* @param length - the number of words (32 bytes) of data to read
* @return the bytes that were read.
*/
function getStorageAt(uint256 offset, uint256 length) public view returns (bytes memory) {
bytes memory result = new bytes(length * 32);
for (uint256 index = 0; index < length; index++) {
// solhint-disable-next-line no-inline-assembly
assembly {
let word := sload(add(offset, index))
mstore(add(add(result, 0x20), mul(index, 0x20)), word)
}
}
return result;
}
/**
* @dev Performs a delegetecall on a targetContract in the context of self.
* Internally reverts execution to avoid side effects (making it static).
*
* This method reverts with data equal to `abi.encode(bool(success), bytes(response))`.
* Specifically, the `returndata` after a call to this method will be:
* `success:bool || response.length:uint256 || response:bytes`.
*
* @param targetContract Address of the contract containing the code to execute.
* @param calldataPayload Calldata that should be sent to the target contract (encoded method name and arguments).
*/
function simulateAndRevert(address targetContract, bytes memory calldataPayload) external {
// solhint-disable-next-line no-inline-assembly
assembly {
let success := delegatecall(gas(), targetContract, add(calldataPayload, 0x20), mload(calldataPayload), 0, 0)
mstore(0x00, success)
mstore(0x20, returndatasize())
returndatacopy(0x40, 0, returndatasize())
revert(0, add(returndatasize(), 0x40))
}
}
}
// File: goerli/0xf48f2B2d2a534e402487b3ee7C18c33Aec0Fe5e4/contracts/common/SecuredTokenTransfer.sol
pragma solidity >=0.7.0 <0.9.0;
/// @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
}
}
}
}
// File: goerli/0xf48f2B2d2a534e402487b3ee7C18c33Aec0Fe5e4/contracts/common/SignatureDecoder.sol
pragma solidity >=0.7.0 <0.9.0;
/// @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)
}
}
}
// File: goerli/0xf48f2B2d2a534e402487b3ee7C18c33Aec0Fe5e4/contracts/common/Singleton.sol
pragma solidity >=0.7.0 <0.9.0;
/// @title Singleton - Base for singleton contracts (should always be first super contract)
/// This contract is tightly coupled to our proxy contract (see `proxies/GnosisSafeProxy.sol`)
/// @author Richard Meissner - <[email protected]>
contract Singleton {
// singleton always needs to be first declared variable, to ensure that it is at the same location as in the Proxy contract.
// It should also always be ensured that the address is stored alone (uses a full word)
address private singleton;
}
// File: goerli/0xf48f2B2d2a534e402487b3ee7C18c33Aec0Fe5e4/contracts/common/EtherPaymentFallback.sol
pragma solidity >=0.7.0 <0.9.0;
/// @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);
}
}
// File: goerli/0xf48f2B2d2a534e402487b3ee7C18c33Aec0Fe5e4/contracts/common/SelfAuthorized.sol
pragma solidity >=0.7.0 <0.9.0;
/// @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();
_;
}
}
// File: goerli/0xf48f2B2d2a534e402487b3ee7C18c33Aec0Fe5e4/contracts/base/FallbackManager.sol
pragma solidity >=0.7.0 <0.9.0;
/// @title Fallback Manager - A contract that manages fallback calls made to this contract
/// @author Richard Meissner - <[email protected]>
contract FallbackManager is SelfAuthorized {
event ChangedFallbackHandler(address handler);
// keccak256("fallback_manager.handler.address")
bytes32 internal constant FALLBACK_HANDLER_STORAGE_SLOT = 0x6c9a6c4a39284e37ed1cf53d337577d14212a4870fb976a4366c693b939918d5;
function internalSetFallbackHandler(address handler) internal {
bytes32 slot = FALLBACK_HANDLER_STORAGE_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
sstore(slot, handler)
}
}
/// @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) public authorized {
internalSetFallbackHandler(handler);
emit ChangedFallbackHandler(handler);
}
// solhint-disable-next-line payable-fallback,no-complex-fallback
fallback() external {
bytes32 slot = FALLBACK_HANDLER_STORAGE_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
let handler := sload(slot)
if iszero(handler) {
return(0, 0)
}
calldatacopy(0, 0, calldatasize())
// The msg.sender address is shifted to the left by 12 bytes to remove the padding
// Then the address without padding is stored right after the calldata
mstore(calldatasize(), shl(96, caller()))
// Add 20 bytes for the address appended add the end
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())
}
}
}
// File: goerli/0xf48f2B2d2a534e402487b3ee7C18c33Aec0Fe5e4/contracts/base/OwnerManager.sol
pragma solidity >=0.7.0 <0.9.0;
/// @title OwnerManager - Manages a set of owners and a threshold to perform actions.
/// @author Stefan George - <[email protected]>
/// @author Richard Meissner - <[email protected]>
contract OwnerManager is SelfAuthorized {
event AddedOwner(address owner);
event RemovedOwner(address owner);
event ChangedThreshold(uint256 threshold);
address internal constant SENTINEL_OWNERS = address(0x1);
mapping(address => address) internal owners;
uint256 internal ownerCount;
uint256 internal threshold;
/// @dev Setup function sets initial storage of contract.
/// @param _owners List of Safe owners.
/// @param _threshold Number of required confirmations for a Safe transaction.
function setupOwners(address[] memory _owners, uint256 _threshold) internal {
// Threshold can only be 0 at initialization.
// Check ensures that setup function can only be called once.
require(threshold == 0, "GS200");
// Validate that threshold is smaller than number of added owners.
require(_threshold <= _owners.length, "GS201");
// There has to be at least one Safe owner.
require(_threshold >= 1, "GS202");
// Initializing Safe owners.
address currentOwner = SENTINEL_OWNERS;
for (uint256 i = 0; i < _owners.length; i++) {
// Owner address cannot be null.
address owner = _owners[i];
require(owner != address(0) && owner != SENTINEL_OWNERS && owner != address(this) && currentOwner != owner, "GS203");
// No duplicate owners allowed.
require(owners[owner] == address(0), "GS204");
owners[currentOwner] = owner;
currentOwner = owner;
}
owners[currentOwner] = SENTINEL_OWNERS;
ownerCount = _owners.length;
threshold = _threshold;
}
/// @dev Allows to add a new owner to the Safe and update the threshold at the same time.
/// This can only be done via a Safe transaction.
/// @notice Adds the owner `owner` to the Safe and updates the threshold to `_threshold`.
/// @param owner New owner address.
/// @param _threshold New threshold.
function addOwnerWithThreshold(address owner, uint256 _threshold) public authorized {
// Owner address cannot be null, the sentinel or the Safe itself.
require(owner != address(0) && owner != SENTINEL_OWNERS && owner != address(this), "GS203");
// No duplicate owners allowed.
require(owners[owner] == address(0), "GS204");
owners[owner] = owners[SENTINEL_OWNERS];
owners[SENTINEL_OWNERS] = owner;
ownerCount++;
emit AddedOwner(owner);
// Change threshold if threshold was changed.
if (threshold != _threshold) changeThreshold(_threshold);
}
/// @dev Allows to remove an owner from the Safe and update the threshold at the same time.
/// This can only be done via a Safe transaction.
/// @notice Removes the owner `owner` from the Safe and updates the threshold to `_threshold`.
/// @param prevOwner Owner that pointed to the owner to be removed in the linked list
/// @param owner Owner address to be removed.
/// @param _threshold New threshold.
function removeOwner(
address prevOwner,
address owner,
uint256 _threshold
) public authorized {
// Only allow to remove an owner, if threshold can still be reached.
require(ownerCount - 1 >= _threshold, "GS201");
// Validate owner address and check that it corresponds to owner index.
require(owner != address(0) && owner != SENTINEL_OWNERS, "GS203");
require(owners[prevOwner] == owner, "GS205");
owners[prevOwner] = owners[owner];
owners[owner] = address(0);
ownerCount--;
emit RemovedOwner(owner);
// Change threshold if threshold was changed.
if (threshold != _threshold) changeThreshold(_threshold);
}
/// @dev Allows to swap/replace an owner from the Safe with another address.
/// This can only be done via a Safe transaction.
/// @notice Replaces the owner `oldOwner` in the Safe with `newOwner`.
/// @param prevOwner Owner that pointed to the owner to be replaced in the linked list
/// @param oldOwner Owner address to be replaced.
/// @param newOwner New owner address.
function swapOwner(
address prevOwner,
address oldOwner,
address newOwner
) public authorized {
// Owner address cannot be null, the sentinel or the Safe itself.
require(newOwner != address(0) && newOwner != SENTINEL_OWNERS && newOwner != address(this), "GS203");
// No duplicate owners allowed.
require(owners[newOwner] == address(0), "GS204");
// Validate oldOwner address and check that it corresponds to owner index.
require(oldOwner != address(0) && oldOwner != SENTINEL_OWNERS, "GS203");
require(owners[prevOwner] == oldOwner, "GS205");
owners[newOwner] = owners[oldOwner];
owners[prevOwner] = newOwner;
owners[oldOwner] = address(0);
emit RemovedOwner(oldOwner);
emit AddedOwner(newOwner);
}
/// @dev Allows to update the number of required confirmations by Safe owners.
/// This can only be done via a Safe transaction.
/// @notice Changes the threshold of the Safe to `_threshold`.
/// @param _threshold New threshold.
function changeThreshold(uint256 _threshold) public authorized {
// Validate that threshold is smaller than number of owners.
require(_threshold <= ownerCount, "GS201");
// There has to be at least one Safe owner.
require(_threshold >= 1, "GS202");
threshold = _threshold;
emit ChangedThreshold(threshold);
}
function getThreshold() public view returns (uint256) {
return threshold;
}
function isOwner(address owner) public view returns (bool) {
return owner != SENTINEL_OWNERS && owners[owner] != address(0);
}
/// @dev Returns array of owners.
/// @return Array of Safe owners.
function getOwners() public view returns (address[] memory) {
address[] memory array = new address[](ownerCount);
// populate return array
uint256 index = 0;
address currentOwner = owners[SENTINEL_OWNERS];
while (currentOwner != SENTINEL_OWNERS) {
array[index] = currentOwner;
currentOwner = owners[currentOwner];
index++;
}
return array;
}
}
// File: goerli/0xf48f2B2d2a534e402487b3ee7C18c33Aec0Fe5e4/contracts/common/Enum.sol
pragma solidity >=0.7.0 <0.9.0;
/// @title Enum - Collection of enums
/// @author Richard Meissner - <[email protected]>
contract Enum {
enum Operation {Call, DelegateCall}
}
// File: goerli/0xf48f2B2d2a534e402487b3ee7C18c33Aec0Fe5e4/contracts/base/GuardManager.sol
pragma solidity >=0.7.0 <0.9.0;
interface Guard {
function checkTransaction(
address to,
uint256 value,
bytes memory data,
Enum.Operation operation,
uint256 safeTxGas,
uint256 baseGas,
uint256 gasPrice,
address gasToken,
address payable refundReceiver,
bytes memory signatures,
address msgSender
) external;
function checkAfterExecution(bytes32 txHash, bool success) external;
}
/// @title Fallback Manager - A contract that manages fallback calls made to this contract
/// @author Richard Meissner - <[email protected]>
contract GuardManager is SelfAuthorized {
event ChangedGuard(address guard);
// keccak256("guard_manager.guard.address")
bytes32 internal constant GUARD_STORAGE_SLOT = 0x4a204f620c8c5ccdca3fd54d003badd85ba500436a431f0cbda4f558c93c34c8;
/// @dev Set a guard that checks transactions before execution
/// @param guard The address of the guard to be used or the 0 address to disable the guard
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);
}
function getGuard() internal view returns (address guard) {
bytes32 slot = GUARD_STORAGE_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
guard := sload(slot)
}
}
}
// File: goerli/0xf48f2B2d2a534e402487b3ee7C18c33Aec0Fe5e4/contracts/base/Executor.sol
pragma solidity >=0.7.0 <0.9.0;
/// @title Executor - A contract that can execute transactions
/// @author Richard Meissner - <[email protected]>
contract Executor {
function execute(
address to,
uint256 value,
bytes memory data,
Enum.Operation operation,
uint256 txGas
) internal returns (bool success) {
if (operation == Enum.Operation.DelegateCall) {
// solhint-disable-next-line no-inline-assembly
assembly {
success := delegatecall(txGas, to, add(data, 0x20), mload(data), 0, 0)
}
} else {
// solhint-disable-next-line no-inline-assembly
assembly {
success := call(txGas, to, value, add(data, 0x20), mload(data), 0, 0)
}
}
}
}
// File: goerli/0xf48f2B2d2a534e402487b3ee7C18c33Aec0Fe5e4/contracts/base/ModuleManager.sol
pragma solidity >=0.7.0 <0.9.0;
/// @title Module Manager - A contract that manages modules that can execute transactions via this contract
/// @author Stefan George - <[email protected]>
/// @author Richard Meissner - <[email protected]>
contract ModuleManager is SelfAuthorized, Executor {
event EnabledModule(address module);
event DisabledModule(address module);
event ExecutionFromModuleSuccess(address indexed module);
event ExecutionFromModuleFailure(address indexed module);
address internal constant SENTINEL_MODULES = address(0x1);
mapping(address => address) internal modules;
function setupModules(address to, bytes memory data) internal {
require(modules[SENTINEL_MODULES] == address(0), "GS100");
modules[SENTINEL_MODULES] = SENTINEL_MODULES;
if (to != address(0))
// Setup has to complete successfully or transaction fails.
require(execute(to, 0, data, Enum.Operation.DelegateCall, gasleft()), "GS000");
}
/// @dev Allows to add a module to the whitelist.
/// This can only be done via a Safe transaction.
/// @notice Enables the module `module` for the Safe.
/// @param module Module to be whitelisted.
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 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 memory data,
Enum.Operation operation
) public virtual returns (bool success) {
// Only whitelisted modules are allowed.
require(msg.sender != SENTINEL_MODULES && modules[msg.sender] != address(0), "GS104");
// Execute transaction without further confirmations.
success = execute(to, value, data, operation, gasleft());
if (success) 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 memory data,
Enum.Operation operation
) public returns (bool success, bytes memory returnData) {
success = 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
}
}
/// @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 Returns array of modules.
/// @param start Start of the page.
/// @param pageSize Maximum number of modules that should be returned.
/// @return array Array of modules.
/// @return next Start of the next page.
function getModulesPaginated(address start, uint256 pageSize) external view returns (address[] memory array, address next) {
// Init array with max page size
array = new address[](pageSize);
// Populate return array
uint256 moduleCount = 0;
address currentModule = modules[start];
while (currentModule != address(0x0) && currentModule != SENTINEL_MODULES && moduleCount < pageSize) {
array[moduleCount] = currentModule;
currentModule = modules[currentModule];
moduleCount++;
}
next = currentModule;
// Set correct size of returned array
// solhint-disable-next-line no-inline-assembly
assembly {
mstore(array, moduleCount)
}
}
}
// File: goerli/0xf48f2B2d2a534e402487b3ee7C18c33Aec0Fe5e4/contracts/interfaces/ISignatureValidator.sol
pragma solidity >=0.7.0 <0.9.0;
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);
}
// File: goerli/0xf48f2B2d2a534e402487b3ee7C18c33Aec0Fe5e4/contracts/GnosisSafe.sol
pragma solidity >=0.7.0 <0.9.0;
/// @title Gnosis Safe - A multisignature wallet with support for confirmations using signed messages based on ERC191.
/// @author Stefan George - <[email protected]>
/// @author Richard Meissner - <[email protected]>
contract GnosisSafe is
EtherPaymentFallback,
Singleton,
ModuleManager,
OwnerManager,
SignatureDecoder,
SecuredTokenTransfer,
ISignatureValidatorConstants,
FallbackManager,
StorageAccessible,
GuardManager
{
using GnosisSafeMath for uint256;
string public constant VERSION = "1.3.0";
// keccak256(
// "EIP712Domain(uint256 chainId,address verifyingContract)"
// );
bytes32 private constant DOMAIN_SEPARATOR_TYPEHASH = 0x47e79534a245952e8b16893a336b85a3d9ea9fa8c573f3d803afb92a79469218;
// keccak256(
// "SafeTx(address to,uint256 value,bytes data,uint8 operation,uint256 safeTxGas,uint256 baseGas,uint256 gasPrice,address gasToken,address refundReceiver,uint256 nonce)"
// );
bytes32 private constant SAFE_TX_TYPEHASH = 0xbb8310d486368db6bd6f849402fdd73ad53d316b5a4b2644ad6efe0f941286d8;
event SafeSetup(address indexed initiator, address[] owners, uint256 threshold, address initializer, address fallbackHandler);
event ApproveHash(bytes32 indexed approvedHash, address indexed owner);
event SignMsg(bytes32 indexed msgHash);
event ExecutionFailure(bytes32 txHash, uint256 payment);
event ExecutionSuccess(bytes32 txHash, uint256 payment);
uint256 public nonce;
bytes32 private _deprecatedDomainSeparator;
// Mapping to keep track of all message hashes that have been approve by ALL REQUIRED owners
mapping(bytes32 => uint256) public signedMessages;
// Mapping to keep track of all hashes (message or transaction) that have been approve by ANY owners
mapping(address => mapping(bytes32 => uint256)) public approvedHashes;
// This constructor ensures that this contract can only be used as a master copy for Proxy contracts
constructor() {
// By setting the threshold it is not possible to call setup anymore,
// so we create a Safe with 0 owners and threshold 1.
// This is an unusable Safe, perfect for the singleton
threshold = 1;
}
/// @dev Setup function sets initial storage of contract.
/// @param _owners List of Safe owners.
/// @param _threshold Number of required confirmations for a Safe transaction.
/// @param to Contract address for optional delegate call.
/// @param data Data payload for optional delegate call.
/// @param fallbackHandler Handler for fallback calls to this contract
/// @param paymentToken Token that should be used for the payment (0 is ETH)
/// @param payment Value that should be paid
/// @param paymentReceiver Adddress that should receive the payment (or 0 if tx.origin)
function setup(
address[] calldata _owners,
uint256 _threshold,
address to,
bytes calldata data,
address fallbackHandler,
address paymentToken,
uint256 payment,
address payable paymentReceiver
) external {
// setupOwners checks if the Threshold is already set, therefore preventing that this method is called twice
setupOwners(_owners, _threshold);
if (fallbackHandler != address(0)) internalSetFallbackHandler(fallbackHandler);
// As setupOwners can only be called if the contract has not been initialized we don't need a check for setupModules
setupModules(to, data);
if (payment > 0) {
// To avoid running into issues with EIP-170 we reuse the handlePayment function (to avoid adjusting code of that has been verified we do not adjust the method itself)
// baseGas = 0, gasPrice = 1 and gas = payment => amount = (payment + 0) * 1 = payment
handlePayment(payment, 0, 1, paymentToken, paymentReceiver);
}
emit SafeSetup(msg.sender, _owners, _threshold, to, fallbackHandler);
}
/// @dev Allows to execute a Safe transaction confirmed by required number of owners and then pays the account that submitted the transaction.
/// Note: The fees are always transferred, even if the user transaction fails.
/// @param to Destination address of Safe transaction.
/// @param value Ether value of Safe transaction.
/// @param data Data payload of Safe transaction.
/// @param operation Operation type of Safe transaction.
/// @param safeTxGas Gas that should be used for the Safe transaction.
/// @param baseGas Gas costs that are independent of the transaction execution(e.g. base transaction fee, signature check, payment of the refund)
/// @param gasPrice Gas price that should be used for the payment calculation.
/// @param gasToken Token address (or 0 if ETH) that is used for the payment.
/// @param refundReceiver Address of receiver of gas payment (or 0 if tx.origin).
/// @param signatures Packed signature data ({bytes32 r}{bytes32 s}{uint8 v})
function execTransaction(
address to,
uint256 value,
bytes calldata data,
Enum.Operation operation,
uint256 safeTxGas,
uint256 baseGas,
uint256 gasPrice,
address gasToken,
address payable refundReceiver,
bytes memory signatures
) public payable virtual returns (bool success) {
bytes32 txHash;
// Use scope here to limit variable lifetime and prevent `stack too deep` errors
{
bytes memory txHashData =
encodeTransactionData(
// Transaction info
to,
value,
data,
operation,
safeTxGas,
// Payment info
baseGas,
gasPrice,
gasToken,
refundReceiver,
// Signature info
nonce
);
// Increase nonce and execute transaction.
nonce++;
txHash = keccak256(txHashData);
checkSignatures(txHash, txHashData, signatures);
}
address guard = getGuard();
{
if (guard != address(0)) {
Guard(guard).checkTransaction(
// Transaction info
to,
value,
data,
operation,
safeTxGas,
// Payment info
baseGas,
gasPrice,
gasToken,
refundReceiver,
// Signature info
signatures,
msg.sender
);
}
}
// We require some gas to emit the events (at least 2500) after the execution and some to perform code until the execution (500)
// We also include the 1/64 in the check that is not send along with a call to counteract potential shortings because of EIP-150
require(gasleft() >= ((safeTxGas * 64) / 63).max(safeTxGas + 2500) + 500, "GS010");
// Use scope here to limit variable lifetime and prevent `stack too deep` errors
{
uint256 gasUsed = gasleft();
// If the gasPrice is 0 we assume that nearly all available gas can be used (it is always more than safeTxGas)
// We only substract 2500 (compared to the 3000 before) to ensure that the amount passed is still higher than safeTxGas
success = execute(to, value, data, operation, gasPrice == 0 ? (gasleft() - 2500) : safeTxGas);
gasUsed = gasUsed.sub(gasleft());
// If no safeTxGas and no gasPrice was set (e.g. both are 0), then the internal tx is required to be successful
// This makes it possible to use `estimateGas` without issues, as it searches for the minimum gas where the tx doesn't revert
require(success || safeTxGas != 0 || gasPrice != 0, "GS013");
// We transfer the calculated tx costs to the tx.origin to avoid sending it to intermediate contracts that have made calls
uint256 payment = 0;
if (gasPrice > 0) {
payment = handlePayment(gasUsed, baseGas, gasPrice, gasToken, refundReceiver);
}
if (success) emit ExecutionSuccess(txHash, payment);
else emit ExecutionFailure(txHash, payment);
}
{
if (guard != address(0)) {
Guard(guard).checkAfterExecution(txHash, success);
}
}
}
function handlePayment(
uint256 gasUsed,
uint256 baseGas,
uint256 gasPrice,
address gasToken,
address payable refundReceiver
) private returns (uint256 payment) {
// solhint-disable-next-line avoid-tx-origin
address payable receiver = refundReceiver == address(0) ? payable(tx.origin) : refundReceiver;
if (gasToken == address(0)) {
// For ETH we will only adjust the gas price to not be higher than the actual used gas price
payment = gasUsed.add(baseGas).mul(gasPrice < tx.gasprice ? gasPrice : tx.gasprice);
require(receiver.send(payment), "GS011");
} else {
payment = gasUsed.add(baseGas).mul(gasPrice);
require(transferToken(gasToken, receiver, payment), "GS012");
}
}
/**
* @dev Checks whether the signature provided is valid for the provided data, hash. Will revert otherwise.
* @param dataHash Hash of the data (could be either a message hash or transaction hash)
* @param data That should be signed (this is passed to an external validator contract)
* @param signatures Signature data that should be verified. Can be ECDSA signature, contract signature (EIP-1271) or approved hash.
*/
function checkSignatures(
bytes32 dataHash,
bytes memory data,
bytes memory signatures
) public view {
// Load threshold to avoid multiple storage loads
uint256 _threshold = threshold;
// Check that a threshold is set
require(_threshold > 0, "GS001");
checkNSignatures(dataHash, data, signatures, _threshold);
}
/**
* @dev Checks whether the signature provided is valid for the provided data, hash. Will revert otherwise.
* @param dataHash Hash of the data (could be either a message hash or transaction hash)
* @param data That should be signed (this is passed to an external validator contract)
* @param signatures Signature data that should be verified. Can be ECDSA signature, contract signature (EIP-1271) or approved hash.
* @param requiredSignatures Amount of required valid signatures.
*/
function checkNSignatures(
bytes32 dataHash,
bytes memory data,
bytes memory signatures,
uint256 requiredSignatures
) public view {
// Check that the provided signature data is not too short
require(signatures.length >= requiredSignatures.mul(65), "GS020");
// There cannot be an owner with address 0.
address lastOwner = address(0);
address currentOwner;
uint8 v;
bytes32 r;
bytes32 s;
uint256 i;
for (i = 0; i < requiredSignatures; i++) {
(v, r, s) = signatureSplit(signatures, i);
if (v == 0) {
// If v is 0 then it is a contract signature
// When handling contract signatures the address of the contract is encoded into r
currentOwner = address(uint160(uint256(r)));
// Check that signature data pointer (s) is not pointing inside the static part of the signatures bytes
// This check is not completely accurate, since it is possible that more signatures than the threshold are send.
// Here we only check that the pointer is not pointing inside the part that is being processed
require(uint256(s) >= requiredSignatures.mul(65), "GS021");
// Check that signature data pointer (s) is in bounds (points to the length of data -> 32 bytes)
require(uint256(s).add(32) <= signatures.length, "GS022");
// Check if the contract signature is in bounds: start of data is s + 32 and end is start + signature length
uint256 contractSignatureLen;
// solhint-disable-next-line no-inline-assembly
assembly {
contractSignatureLen := mload(add(add(signatures, s), 0x20))
}
require(uint256(s).add(32).add(contractSignatureLen) <= signatures.length, "GS023");
// Check signature
bytes memory contractSignature;
// solhint-disable-next-line no-inline-assembly
assembly {
// The signature data for contract signatures is appended to the concatenated signatures and the offset is stored in s
contractSignature := add(add(signatures, s), 0x20)
}
require(ISignatureValidator(currentOwner).isValidSignature(data, contractSignature) == EIP1271_MAGIC_VALUE, "GS024");
} else if (v == 1) {
// If v is 1 then it is an approved hash
// When handling approved hashes the address of the approver is encoded into r
currentOwner = address(uint160(uint256(r)));
// Hashes are automatically approved by the sender of the message or when they have been pre-approved via a separate transaction
require(msg.sender == currentOwner || approvedHashes[currentOwner][dataHash] != 0, "GS025");
} else if (v > 30) {
// If v > 30 then default va (27,28) has been adjusted for eth_sign flow
// To support eth_sign and similar we adjust v and hash the messageHash with the Ethereum message prefix before applying ecrecover
currentOwner = ecrecover(keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", dataHash)), v - 4, r, s);
} else {
// Default is the ecrecover flow with the provided data hash
// Use ecrecover with the messageHash for EOA signatures
currentOwner = ecrecover(dataHash, v, r, s);
}
require(currentOwner > lastOwner && owners[currentOwner] != address(0) && currentOwner != SENTINEL_OWNERS, "GS026");
lastOwner = currentOwner;
}
}
/// @dev Allows to estimate a Safe transaction.
/// This method is only meant for estimation purpose, therefore the call will always revert and encode the result in the revert data.
/// Since the `estimateGas` function includes refunds, call this method to get an estimated of the costs that are deducted from the safe with `execTransaction`
/// @param to Destination address of Safe transaction.
/// @param value Ether value of Safe transaction.
/// @param data Data payload of Safe transaction.
/// @param operation Operation type of Safe transaction.
/// @return Estimate without refunds and overhead fees (base transaction and payload data gas costs).
/// @notice Deprecated in favor of common/StorageAccessible.sol and will be removed in next version.
function requiredTxGas(
address to,
uint256 value,
bytes calldata data,
Enum.Operation operation
) external returns (uint256) {
uint256 startGas = gasleft();
// We don't provide an error message here, as we use it to return the estimate
require(execute(to, value, data, operation, gasleft()));
uint256 requiredGas = startGas - gasleft();
// Convert response to string and return via error message
revert(string(abi.encodePacked(requiredGas)));
}
/**
* @dev Marks a hash as approved. This can be used to validate a hash that is used by a signature.
* @param hashToApprove The hash that should be marked as approved for signatures that are verified by this contract.
*/
function approveHash(bytes32 hashToApprove) external {
require(owners[msg.sender] != address(0), "GS030");
approvedHashes[msg.sender][hashToApprove] = 1;
emit ApproveHash(hashToApprove, msg.sender);
}
/// @dev Returns the chain id used by this contract.
function getChainId() public view returns (uint256) {
uint256 id;
// solhint-disable-next-line no-inline-assembly
assembly {
id := chainid()
}
return id;
}
function domainSeparator() public view returns (bytes32) {
return keccak256(abi.encode(DOMAIN_SEPARATOR_TYPEHASH, getChainId(), this));
}
/// @dev Returns the bytes that are hashed to be signed by owners.
/// @param to Destination address.
/// @param value Ether value.
/// @param data Data payload.
/// @param operation Operation type.
/// @param safeTxGas Gas that should be used for the safe transaction.
/// @param baseGas Gas costs for that are independent of the transaction execution(e.g. base transaction fee, signature check, payment of the refund)
/// @param gasPrice Maximum gas price that should be used for this transaction.
/// @param gasToken Token address (or 0 if ETH) that is used for the payment.
/// @param refundReceiver Address of receiver of gas payment (or 0 if tx.origin).
/// @param _nonce Transaction nonce.
/// @return Transaction hash bytes.
function encodeTransactionData(
address to,
uint256 value,
bytes calldata data,
Enum.Operation operation,
uint256 safeTxGas,
uint256 baseGas,
uint256 gasPrice,
address gasToken,
address refundReceiver,
uint256 _nonce
) public view returns (bytes memory) {
bytes32 safeTxHash =
keccak256(
abi.encode(
SAFE_TX_TYPEHASH,
to,
value,
keccak256(data),
operation,
safeTxGas,
baseGas,
gasPrice,
gasToken,
refundReceiver,
_nonce
)
);
return abi.encodePacked(bytes1(0x19), bytes1(0x01), domainSeparator(), safeTxHash);
}
/// @dev Returns hash to be signed by owners.
/// @param to Destination address.
/// @param value Ether value.
/// @param data Data payload.
/// @param operation Operation type.
/// @param safeTxGas Fas that should be used for the safe transaction.
/// @param baseGas Gas costs for data used to trigger the safe transaction.
/// @param gasPrice Maximum gas price that should be used for this transaction.
/// @param gasToken Token address (or 0 if ETH) that is used for the payment.
/// @param refundReceiver Address of receiver of gas payment (or 0 if tx.origin).
/// @param _nonce Transaction nonce.
/// @return Transaction hash.
function getTransactionHash(
address to,
uint256 value,
bytes calldata data,
Enum.Operation operation,
uint256 safeTxGas,
uint256 baseGas,
uint256 gasPrice,
address gasToken,
address refundReceiver,
uint256 _nonce
) public view returns (bytes32) {
return keccak256(encodeTransactionData(to, value, data, operation, safeTxGas, baseGas, gasPrice, gasToken, refundReceiver, _nonce));
}
}
// File: goerli/0xf48f2B2d2a534e402487b3ee7C18c33Aec0Fe5e4/contracts/interfaces/IERC165.sol
pragma solidity >=0.7.0 <0.9.0;
/// @notice More details at https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/introspection/IERC165.sol
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// File: goerli/0xf48f2B2d2a534e402487b3ee7C18c33Aec0Fe5e4/contracts/interfaces/ERC777TokensRecipient.sol
pragma solidity >=0.7.0 <0.9.0;
interface ERC777TokensRecipient {
function tokensReceived(
address operator,
address from,
address to,
uint256 amount,
bytes calldata data,
bytes calldata operatorData
) external;
}
// File: goerli/0xf48f2B2d2a534e402487b3ee7C18c33Aec0Fe5e4/contracts/interfaces/ERC721TokenReceiver.sol
pragma solidity >=0.7.0 <0.9.0;
/// @dev Note: the ERC-165 identifier for this interface is 0x150b7a02.
interface ERC721TokenReceiver {
/// @notice Handle the receipt of an NFT
/// @dev The ERC721 smart contract calls this function on the recipient
/// after a `transfer`. This function MAY throw to revert and reject the
/// transfer. Return of other than the magic value MUST result in the
/// transaction being reverted.
/// Note: the contract address is always the message sender.
/// @param _operator The address which called `safeTransferFrom` function
/// @param _from The address which previously owned the token
/// @param _tokenId The NFT identifier which is being transferred
/// @param _data Additional data with no specified format
/// @return `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`
/// unless throwing
function onERC721Received(
address _operator,
address _from,
uint256 _tokenId,
bytes calldata _data
) external returns (bytes4);
}
// File: goerli/0xf48f2B2d2a534e402487b3ee7C18c33Aec0Fe5e4/contracts/interfaces/ERC1155TokenReceiver.sol
pragma solidity >=0.7.0 <0.9.0;
/**
Note: The ERC-165 identifier for this interface is 0x4e2312e0.
*/
interface ERC1155TokenReceiver {
/**
@notice Handle the receipt of a single ERC1155 token type.
@dev An ERC1155-compliant smart contract MUST call this function on the token recipient contract, at the end of a `safeTransferFrom` after the balance has been updated.
This function MUST return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` (i.e. 0xf23a6e61) if it accepts the transfer.
This function MUST revert if it rejects the transfer.
Return of any other value than the prescribed keccak256 generated value MUST result in the transaction being reverted by the caller.
@param _operator The address which initiated the transfer (i.e. msg.sender)
@param _from The address which previously owned the token
@param _id The ID of the token being transferred
@param _value The amount of tokens being transferred
@param _data Additional data with no specified format
@return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))`
*/
function onERC1155Received(
address _operator,
address _from,
uint256 _id,
uint256 _value,
bytes calldata _data
) external returns (bytes4);
/**
@notice Handle the receipt of multiple ERC1155 token types.
@dev An ERC1155-compliant smart contract MUST call this function on the token recipient contract, at the end of a `safeBatchTransferFrom` after the balances have been updated.
This function MUST return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` (i.e. 0xbc197c81) if it accepts the transfer(s).
This function MUST revert if it rejects the transfer(s).
Return of any other value than the prescribed keccak256 generated value MUST result in the transaction being reverted by the caller.
@param _operator The address which initiated the batch transfer (i.e. msg.sender)
@param _from The address which previously owned the token
@param _ids An array containing ids of each token being transferred (order and length must match _values array)
@param _values An array containing amounts of each token being transferred (order and length must match _ids array)
@param _data Additional data with no specified format
@return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))`
*/
function onERC1155BatchReceived(
address _operator,
address _from,
uint256[] calldata _ids,
uint256[] calldata _values,
bytes calldata _data
) external returns (bytes4);
}
// File: goerli/0xf48f2B2d2a534e402487b3ee7C18c33Aec0Fe5e4/contracts/handler/DefaultCallbackHandler.sol
pragma solidity >=0.7.0 <0.9.0;
/// @title Default Callback Handler - returns true for known token callbacks
/// @author Richard Meissner - <[email protected]>
contract DefaultCallbackHandler is ERC1155TokenReceiver, ERC777TokensRecipient, ERC721TokenReceiver, IERC165 {
string public constant NAME = "Default Callback Handler";
string public constant VERSION = "1.0.0";
function onERC1155Received(
address,
address,
uint256,
uint256,
bytes calldata
) external pure override returns (bytes4) {
return 0xf23a6e61;
}
function onERC1155BatchReceived(
address,
address,
uint256[] calldata,
uint256[] calldata,
bytes calldata
) external pure override returns (bytes4) {
return 0xbc197c81;
}
function onERC721Received(
address,
address,
uint256,
bytes calldata
) external pure override returns (bytes4) {
return 0x150b7a02;
}
function tokensReceived(
address,
address,
address,
uint256,
bytes calldata,
bytes calldata
) external pure override {
// We implement this for completeness, doesn't really have any value
}
function supportsInterface(bytes4 interfaceId) external view virtual override returns (bool) {
return
interfaceId == type(ERC1155TokenReceiver).interfaceId ||
interfaceId == type(ERC721TokenReceiver).interfaceId ||
interfaceId == type(IERC165).interfaceId;
}
}
// File: goerli/0xf48f2B2d2a534e402487b3ee7C18c33Aec0Fe5e4/contracts/handler/CompatibilityFallbackHandler.sol
pragma solidity >=0.7.0 <0.9.0;
/// @title Compatibility Fallback Handler - fallback handler to provider compatibility between pre 1.3.0 and 1.3.0+ Safe contracts
/// @author Richard Meissner - <[email protected]>
contract CompatibilityFallbackHandler is DefaultCallbackHandler, ISignatureValidator {
//keccak256(
// "SafeMessage(bytes message)"
//);
bytes32 private constant SAFE_MSG_TYPEHASH = 0x60b3cbf8b4a223d68d641b3b6ddf9a298e7f33710cf3d3a9d1146b5a6150fbca;
bytes4 internal constant SIMULATE_SELECTOR = bytes4(keccak256("simulate(address,bytes)"));
address internal constant SENTINEL_MODULES = address(0x1);
bytes4 internal constant UPDATED_MAGIC_VALUE = 0x1626ba7e;
/**
* Implementation of ISignatureValidator (see `interfaces/ISignatureValidator.sol`)
* @dev Should return whether the signature provided is valid for the provided data.
* @param _data Arbitrary length data signed on the behalf of address(msg.sender)
* @param _signature Signature byte array associated with _data
* @return a bool upon valid or invalid signature with corresponding _data
*/
function isValidSignature(bytes calldata _data, bytes calldata _signature) public view override returns (bytes4) {
// Caller should be a Safe
GnosisSafe safe = GnosisSafe(payable(msg.sender));
bytes32 messageHash = getMessageHashForSafe(safe, _data);
if (_signature.length == 0) {
require(safe.signedMessages(messageHash) != 0, "Hash not approved");
} else {
safe.checkSignatures(messageHash, _data, _signature);
}
return EIP1271_MAGIC_VALUE;
}
/// @dev Returns hash of a message that can be signed by owners.
/// @param message Message that should be hashed
/// @return Message hash.
function getMessageHash(bytes memory message) public view returns (bytes32) {
return getMessageHashForSafe(GnosisSafe(payable(msg.sender)), message);
}
/// @dev Returns hash of a message that can be signed by owners.
/// @param safe Safe to which the message is targeted
/// @param message Message that should be hashed
/// @return Message hash.
function getMessageHashForSafe(GnosisSafe safe, bytes memory message) public view returns (bytes32) {
bytes32 safeMessageHash = keccak256(abi.encode(SAFE_MSG_TYPEHASH, keccak256(message)));
return keccak256(abi.encodePacked(bytes1(0x19), bytes1(0x01), safe.domainSeparator(), safeMessageHash));
}
/**
* Implementation of updated EIP-1271
* @dev Should return whether the signature provided is valid for the provided data.
* The save does not implement the interface since `checkSignatures` is not a view method.
* The method will not perform any state changes (see parameters of `checkSignatures`)
* @param _dataHash Hash of the data signed on the behalf of address(msg.sender)
* @param _signature Signature byte array associated with _dataHash
* @return a bool upon valid or invalid signature with corresponding _dataHash
* @notice See https://github.com/gnosis/util-contracts/blob/bb5fe5fb5df6d8400998094fb1b32a178a47c3a1/contracts/StorageAccessible.sol
*/
function isValidSignature(bytes32 _dataHash, bytes calldata _signature) external view returns (bytes4) {
ISignatureValidator validator = ISignatureValidator(msg.sender);
bytes4 value = validator.isValidSignature(abi.encode(_dataHash), _signature);
return (value == EIP1271_MAGIC_VALUE) ? UPDATED_MAGIC_VALUE : bytes4(0);
}
/// @dev Returns array of first 10 modules.
/// @return Array of modules.
function getModules() external view returns (address[] memory) {
// Caller should be a Safe
GnosisSafe safe = GnosisSafe(payable(msg.sender));
(address[] memory array, ) = safe.getModulesPaginated(SENTINEL_MODULES, 10);
return array;
}
/**
* @dev Performs a delegetecall on a targetContract in the context of self.
* Internally reverts execution to avoid side effects (making it static). Catches revert and returns encoded result as bytes.
* @param targetContract Address of the contract containing the code to execute.
* @param calldataPayload Calldata that should be sent to the target contract (encoded method name and arguments).
*/
function simulate(address targetContract, bytes calldata calldataPayload) external returns (bytes memory response) {
// Suppress compiler warnings about not using parameters, while allowing
// parameters to keep names for documentation purposes. This does not
// generate code.
targetContract;
calldataPayload;
// solhint-disable-next-line no-inline-assembly
assembly {
let internalCalldata := mload(0x40)
// Store `simulateAndRevert.selector`.
// String representation is used to force right padding
mstore(internalCalldata, "\xb4\xfa\xba\x09")
// Abuse the fact that both this and the internal methods have the
// same signature, and differ only in symbol name (and therefore,
// selector) and copy calldata directly. This saves us approximately
// 250 bytes of code and 300 gas at runtime over the
// `abi.encodeWithSelector` builtin.
calldatacopy(add(internalCalldata, 0x04), 0x04, sub(calldatasize(), 0x04))
// `pop` is required here by the compiler, as top level expressions
// can't have return values in inline assembly. `call` typically
// returns a 0 or 1 value indicated whether or not it reverted, but
// since we know it will always revert, we can safely ignore it.
pop(
call(
gas(),
// address() has been changed to caller() to use the implementation of the Safe
caller(),
0,
internalCalldata,
calldatasize(),
// The `simulateAndRevert` call always reverts, and
// instead encodes whether or not it was successful in the return
// data. The first 32-byte word of the return data contains the
// `success` value, so write it to memory address 0x00 (which is
// reserved Solidity scratch space and OK to use).
0x00,
0x20
)
)
// Allocate and copy the response bytes, making sure to increment
// the free memory pointer accordingly (in case this method is
// called as an internal function). The remaining `returndata[0x20:]`
// contains the ABI encoded response bytes, so we can just write it
// as is to memory.
let responseSize := sub(returndatasize(), 0x20)
response := mload(0x40)
mstore(0x40, add(response, responseSize))
returndatacopy(response, 0x20, responseSize)
if iszero(mload(0x00)) {
revert(add(response, 0x20), mload(response))
}
}
}
}Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[],"name":"NAME","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"VERSION","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"message","type":"bytes"}],"name":"getMessageHash","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract GnosisSafe","name":"safe","type":"address"},{"internalType":"bytes","name":"message","type":"bytes"}],"name":"getMessageHashForSafe","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getModules","outputs":[{"internalType":"address[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_dataHash","type":"bytes32"},{"internalType":"bytes","name":"_signature","type":"bytes"}],"name":"isValidSignature","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"_data","type":"bytes"},{"internalType":"bytes","name":"_signature","type":"bytes"}],"name":"isValidSignature","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256[]","name":"","type":"uint256[]"},{"internalType":"uint256[]","name":"","type":"uint256[]"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"onERC1155BatchReceived","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"onERC1155Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"onERC721Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"targetContract","type":"address"},{"internalType":"bytes","name":"calldataPayload","type":"bytes"}],"name":"simulate","outputs":[{"internalType":"bytes","name":"response","type":"bytes"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bytes","name":"","type":"bytes"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"tokensReceived","outputs":[],"stateMutability":"pure","type":"function"}]Contract Creation Code
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Deployed Bytecode Sourcemap
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Swarm Source
ipfs://4251d58f2a197439239faafa82818b7696d25bb75655794a81cc773a0e39ed2b
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Multichain Portfolio | 30 Chains
| Chain | Token | Portfolio % | Price | Amount | Value |
|---|
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.