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Latest 1 internal transaction
Parent Txn Hash | Block | From | To | Value | |||
---|---|---|---|---|---|---|---|
0xb69a8ac6ba9a03a7f9c4176ee7ac921ccc50f850576379f9783a85faf6f6615c | 11956687 | 40 days 14 hrs ago | Synthetix: Proxy SNX Token | Synthetix: SNX Token | 0.006411737625367373 Ether |
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Contract Name:
Synthetix
Compiler Version
v0.5.16+commit.9c3226ce
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity)
/** *Submitted for verification at Etherscan.io on 2021-02-04 */ /* ⚠⚠⚠ WARNING WARNING WARNING ⚠⚠⚠ This is a TARGET contract - DO NOT CONNECT TO IT DIRECTLY IN YOUR CONTRACTS or DAPPS! This contract has an associated PROXY that MUST be used for all integrations - this TARGET will be REPLACED in an upcoming Synthetix release! The proxy for this contract can be found here: https://contracts.synthetix.io/ProxyERC20 *//* ____ __ __ __ _ / __/__ __ ___ / /_ / / ___ / /_ (_)__ __ _\ \ / // // _ \/ __// _ \/ -_)/ __// / \ \ / /___/ \_, //_//_/\__//_//_/\__/ \__//_/ /_\_\ /___/ * Synthetix: Synthetix.sol * * Latest source (may be newer): https://github.com/Synthetixio/synthetix/blob/master/contracts/Synthetix.sol * Docs: https://docs.synthetix.io/contracts/Synthetix * * Contract Dependencies: * - BaseSynthetix * - ExternStateToken * - IAddressResolver * - IERC20 * - ISynthetix * - MixinResolver * - Owned * - Proxyable * - State * Libraries: * - SafeDecimalMath * - SafeMath * - VestingEntries * * MIT License * =========== * * Copyright (c) 2021 Synthetix * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ pragma solidity >=0.4.24; // https://docs.synthetix.io/contracts/source/interfaces/ierc20 interface IERC20 { // ERC20 Optional Views function name() external view returns (string memory); function symbol() external view returns (string memory); function decimals() external view returns (uint8); // Views function totalSupply() external view returns (uint); function balanceOf(address owner) external view returns (uint); function allowance(address owner, address spender) external view returns (uint); // Mutative functions function transfer(address to, uint value) external returns (bool); function approve(address spender, uint value) external returns (bool); function transferFrom( address from, address to, uint value ) external returns (bool); // Events event Transfer(address indexed from, address indexed to, uint value); event Approval(address indexed owner, address indexed spender, uint value); } // https://docs.synthetix.io/contracts/source/contracts/owned contract Owned { address public owner; address public nominatedOwner; constructor(address _owner) public { require(_owner != address(0), "Owner address cannot be 0"); owner = _owner; emit OwnerChanged(address(0), _owner); } function nominateNewOwner(address _owner) external onlyOwner { nominatedOwner = _owner; emit OwnerNominated(_owner); } function acceptOwnership() external { require(msg.sender == nominatedOwner, "You must be nominated before you can accept ownership"); emit OwnerChanged(owner, nominatedOwner); owner = nominatedOwner; nominatedOwner = address(0); } modifier onlyOwner { _onlyOwner(); _; } function _onlyOwner() private view { require(msg.sender == owner, "Only the contract owner may perform this action"); } event OwnerNominated(address newOwner); event OwnerChanged(address oldOwner, address newOwner); } // Inheritance // Internal references // https://docs.synthetix.io/contracts/source/contracts/proxy contract Proxy is Owned { Proxyable public target; constructor(address _owner) public Owned(_owner) {} function setTarget(Proxyable _target) external onlyOwner { target = _target; emit TargetUpdated(_target); } function _emit( bytes calldata callData, uint numTopics, bytes32 topic1, bytes32 topic2, bytes32 topic3, bytes32 topic4 ) external onlyTarget { uint size = callData.length; bytes memory _callData = callData; assembly { /* The first 32 bytes of callData contain its length (as specified by the abi). * Length is assumed to be a uint256 and therefore maximum of 32 bytes * in length. It is also leftpadded to be a multiple of 32 bytes. * This means moving call_data across 32 bytes guarantees we correctly access * the data itself. */ switch numTopics case 0 { log0(add(_callData, 32), size) } case 1 { log1(add(_callData, 32), size, topic1) } case 2 { log2(add(_callData, 32), size, topic1, topic2) } case 3 { log3(add(_callData, 32), size, topic1, topic2, topic3) } case 4 { log4(add(_callData, 32), size, topic1, topic2, topic3, topic4) } } } // solhint-disable no-complex-fallback function() external payable { // Mutable call setting Proxyable.messageSender as this is using call not delegatecall target.setMessageSender(msg.sender); assembly { let free_ptr := mload(0x40) calldatacopy(free_ptr, 0, calldatasize) /* We must explicitly forward ether to the underlying contract as well. */ let result := call(gas, sload(target_slot), callvalue, free_ptr, calldatasize, 0, 0) returndatacopy(free_ptr, 0, returndatasize) if iszero(result) { revert(free_ptr, returndatasize) } return(free_ptr, returndatasize) } } modifier onlyTarget { require(Proxyable(msg.sender) == target, "Must be proxy target"); _; } event TargetUpdated(Proxyable newTarget); } // Inheritance // Internal references // https://docs.synthetix.io/contracts/source/contracts/proxyable contract Proxyable is Owned { // This contract should be treated like an abstract contract /* The proxy this contract exists behind. */ Proxy public proxy; Proxy public integrationProxy; /* The caller of the proxy, passed through to this contract. * Note that every function using this member must apply the onlyProxy or * optionalProxy modifiers, otherwise their invocations can use stale values. */ address public messageSender; constructor(address payable _proxy) internal { // This contract is abstract, and thus cannot be instantiated directly require(owner != address(0), "Owner must be set"); proxy = Proxy(_proxy); emit ProxyUpdated(_proxy); } function setProxy(address payable _proxy) external onlyOwner { proxy = Proxy(_proxy); emit ProxyUpdated(_proxy); } function setIntegrationProxy(address payable _integrationProxy) external onlyOwner { integrationProxy = Proxy(_integrationProxy); } function setMessageSender(address sender) external onlyProxy { messageSender = sender; } modifier onlyProxy { _onlyProxy(); _; } function _onlyProxy() private view { require(Proxy(msg.sender) == proxy || Proxy(msg.sender) == integrationProxy, "Only the proxy can call"); } modifier optionalProxy { _optionalProxy(); _; } function _optionalProxy() private { if (Proxy(msg.sender) != proxy && Proxy(msg.sender) != integrationProxy && messageSender != msg.sender) { messageSender = msg.sender; } } modifier optionalProxy_onlyOwner { _optionalProxy_onlyOwner(); _; } // solhint-disable-next-line func-name-mixedcase function _optionalProxy_onlyOwner() private { if (Proxy(msg.sender) != proxy && Proxy(msg.sender) != integrationProxy && messageSender != msg.sender) { messageSender = msg.sender; } require(messageSender == owner, "Owner only function"); } event ProxyUpdated(address proxyAddress); } /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * - Multiplication cannot 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, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { // Solidity only automatically asserts when dividing by 0 require(b > 0, "SafeMath: division by zero"); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b != 0, "SafeMath: modulo by zero"); return a % b; } } // Libraries // https://docs.synthetix.io/contracts/source/libraries/safedecimalmath library SafeDecimalMath { using SafeMath for uint; /* Number of decimal places in the representations. */ uint8 public constant decimals = 18; uint8 public constant highPrecisionDecimals = 27; /* The number representing 1.0. */ uint public constant UNIT = 10**uint(decimals); /* The number representing 1.0 for higher fidelity numbers. */ uint public constant PRECISE_UNIT = 10**uint(highPrecisionDecimals); uint private constant UNIT_TO_HIGH_PRECISION_CONVERSION_FACTOR = 10**uint(highPrecisionDecimals - decimals); /** * @return Provides an interface to UNIT. */ function unit() external pure returns (uint) { return UNIT; } /** * @return Provides an interface to PRECISE_UNIT. */ function preciseUnit() external pure returns (uint) { return PRECISE_UNIT; } /** * @return The result of multiplying x and y, interpreting the operands as fixed-point * decimals. * * @dev A unit factor is divided out after the product of x and y is evaluated, * so that product must be less than 2**256. As this is an integer division, * the internal division always rounds down. This helps save on gas. Rounding * is more expensive on gas. */ function multiplyDecimal(uint x, uint y) internal pure returns (uint) { /* Divide by UNIT to remove the extra factor introduced by the product. */ return x.mul(y) / UNIT; } /** * @return The result of safely multiplying x and y, interpreting the operands * as fixed-point decimals of the specified precision unit. * * @dev The operands should be in the form of a the specified unit factor which will be * divided out after the product of x and y is evaluated, so that product must be * less than 2**256. * * Unlike multiplyDecimal, this function rounds the result to the nearest increment. * Rounding is useful when you need to retain fidelity for small decimal numbers * (eg. small fractions or percentages). */ function _multiplyDecimalRound( uint x, uint y, uint precisionUnit ) private pure returns (uint) { /* Divide by UNIT to remove the extra factor introduced by the product. */ uint quotientTimesTen = x.mul(y) / (precisionUnit / 10); if (quotientTimesTen % 10 >= 5) { quotientTimesTen += 10; } return quotientTimesTen / 10; } /** * @return The result of safely multiplying x and y, interpreting the operands * as fixed-point decimals of a precise unit. * * @dev The operands should be in the precise unit factor which will be * divided out after the product of x and y is evaluated, so that product must be * less than 2**256. * * Unlike multiplyDecimal, this function rounds the result to the nearest increment. * Rounding is useful when you need to retain fidelity for small decimal numbers * (eg. small fractions or percentages). */ function multiplyDecimalRoundPrecise(uint x, uint y) internal pure returns (uint) { return _multiplyDecimalRound(x, y, PRECISE_UNIT); } /** * @return The result of safely multiplying x and y, interpreting the operands * as fixed-point decimals of a standard unit. * * @dev The operands should be in the standard unit factor which will be * divided out after the product of x and y is evaluated, so that product must be * less than 2**256. * * Unlike multiplyDecimal, this function rounds the result to the nearest increment. * Rounding is useful when you need to retain fidelity for small decimal numbers * (eg. small fractions or percentages). */ function multiplyDecimalRound(uint x, uint y) internal pure returns (uint) { return _multiplyDecimalRound(x, y, UNIT); } /** * @return The result of safely dividing x and y. The return value is a high * precision decimal. * * @dev y is divided after the product of x and the standard precision unit * is evaluated, so the product of x and UNIT must be less than 2**256. As * this is an integer division, the result is always rounded down. * This helps save on gas. Rounding is more expensive on gas. */ function divideDecimal(uint x, uint y) internal pure returns (uint) { /* Reintroduce the UNIT factor that will be divided out by y. */ return x.mul(UNIT).div(y); } /** * @return The result of safely dividing x and y. The return value is as a rounded * decimal in the precision unit specified in the parameter. * * @dev y is divided after the product of x and the specified precision unit * is evaluated, so the product of x and the specified precision unit must * be less than 2**256. The result is rounded to the nearest increment. */ function _divideDecimalRound( uint x, uint y, uint precisionUnit ) private pure returns (uint) { uint resultTimesTen = x.mul(precisionUnit * 10).div(y); if (resultTimesTen % 10 >= 5) { resultTimesTen += 10; } return resultTimesTen / 10; } /** * @return The result of safely dividing x and y. The return value is as a rounded * standard precision decimal. * * @dev y is divided after the product of x and the standard precision unit * is evaluated, so the product of x and the standard precision unit must * be less than 2**256. The result is rounded to the nearest increment. */ function divideDecimalRound(uint x, uint y) internal pure returns (uint) { return _divideDecimalRound(x, y, UNIT); } /** * @return The result of safely dividing x and y. The return value is as a rounded * high precision decimal. * * @dev y is divided after the product of x and the high precision unit * is evaluated, so the product of x and the high precision unit must * be less than 2**256. The result is rounded to the nearest increment. */ function divideDecimalRoundPrecise(uint x, uint y) internal pure returns (uint) { return _divideDecimalRound(x, y, PRECISE_UNIT); } /** * @dev Convert a standard decimal representation to a high precision one. */ function decimalToPreciseDecimal(uint i) internal pure returns (uint) { return i.mul(UNIT_TO_HIGH_PRECISION_CONVERSION_FACTOR); } /** * @dev Convert a high precision decimal to a standard decimal representation. */ function preciseDecimalToDecimal(uint i) internal pure returns (uint) { uint quotientTimesTen = i / (UNIT_TO_HIGH_PRECISION_CONVERSION_FACTOR / 10); if (quotientTimesTen % 10 >= 5) { quotientTimesTen += 10; } return quotientTimesTen / 10; } } // Inheritance // https://docs.synthetix.io/contracts/source/contracts/state contract State is Owned { // the address of the contract that can modify variables // this can only be changed by the owner of this contract address public associatedContract; constructor(address _associatedContract) internal { // This contract is abstract, and thus cannot be instantiated directly require(owner != address(0), "Owner must be set"); associatedContract = _associatedContract; emit AssociatedContractUpdated(_associatedContract); } /* ========== SETTERS ========== */ // Change the associated contract to a new address function setAssociatedContract(address _associatedContract) external onlyOwner { associatedContract = _associatedContract; emit AssociatedContractUpdated(_associatedContract); } /* ========== MODIFIERS ========== */ modifier onlyAssociatedContract { require(msg.sender == associatedContract, "Only the associated contract can perform this action"); _; } /* ========== EVENTS ========== */ event AssociatedContractUpdated(address associatedContract); } // Inheritance // https://docs.synthetix.io/contracts/source/contracts/tokenstate contract TokenState is Owned, State { /* ERC20 fields. */ mapping(address => uint) public balanceOf; mapping(address => mapping(address => uint)) public allowance; constructor(address _owner, address _associatedContract) public Owned(_owner) State(_associatedContract) {} /* ========== SETTERS ========== */ /** * @notice Set ERC20 allowance. * @dev Only the associated contract may call this. * @param tokenOwner The authorising party. * @param spender The authorised party. * @param value The total value the authorised party may spend on the * authorising party's behalf. */ function setAllowance( address tokenOwner, address spender, uint value ) external onlyAssociatedContract { allowance[tokenOwner][spender] = value; } /** * @notice Set the balance in a given account * @dev Only the associated contract may call this. * @param account The account whose value to set. * @param value The new balance of the given account. */ function setBalanceOf(address account, uint value) external onlyAssociatedContract { balanceOf[account] = value; } } // Inheritance // Libraries // Internal references // https://docs.synthetix.io/contracts/source/contracts/externstatetoken contract ExternStateToken is Owned, Proxyable { using SafeMath for uint; using SafeDecimalMath for uint; /* ========== STATE VARIABLES ========== */ /* Stores balances and allowances. */ TokenState public tokenState; /* Other ERC20 fields. */ string public name; string public symbol; uint public totalSupply; uint8 public decimals; constructor( address payable _proxy, TokenState _tokenState, string memory _name, string memory _symbol, uint _totalSupply, uint8 _decimals, address _owner ) public Owned(_owner) Proxyable(_proxy) { tokenState = _tokenState; name = _name; symbol = _symbol; totalSupply = _totalSupply; decimals = _decimals; } /* ========== VIEWS ========== */ /** * @notice Returns the ERC20 allowance of one party to spend on behalf of another. * @param owner The party authorising spending of their funds. * @param spender The party spending tokenOwner's funds. */ function allowance(address owner, address spender) public view returns (uint) { return tokenState.allowance(owner, spender); } /** * @notice Returns the ERC20 token balance of a given account. */ function balanceOf(address account) external view returns (uint) { return tokenState.balanceOf(account); } /* ========== MUTATIVE FUNCTIONS ========== */ /** * @notice Set the address of the TokenState contract. * @dev This can be used to "pause" transfer functionality, by pointing the tokenState at 0x000.. * as balances would be unreachable. */ function setTokenState(TokenState _tokenState) external optionalProxy_onlyOwner { tokenState = _tokenState; emitTokenStateUpdated(address(_tokenState)); } function _internalTransfer( address from, address to, uint value ) internal returns (bool) { /* Disallow transfers to irretrievable-addresses. */ require(to != address(0) && to != address(this) && to != address(proxy), "Cannot transfer to this address"); // Insufficient balance will be handled by the safe subtraction. tokenState.setBalanceOf(from, tokenState.balanceOf(from).sub(value)); tokenState.setBalanceOf(to, tokenState.balanceOf(to).add(value)); // Emit a standard ERC20 transfer event emitTransfer(from, to, value); return true; } /** * @dev Perform an ERC20 token transfer. Designed to be called by transfer functions possessing * the onlyProxy or optionalProxy modifiers. */ function _transferByProxy( address from, address to, uint value ) internal returns (bool) { return _internalTransfer(from, to, value); } /* * @dev Perform an ERC20 token transferFrom. Designed to be called by transferFrom functions * possessing the optionalProxy or optionalProxy modifiers. */ function _transferFromByProxy( address sender, address from, address to, uint value ) internal returns (bool) { /* Insufficient allowance will be handled by the safe subtraction. */ tokenState.setAllowance(from, sender, tokenState.allowance(from, sender).sub(value)); return _internalTransfer(from, to, value); } /** * @notice Approves spender to transfer on the message sender's behalf. */ function approve(address spender, uint value) public optionalProxy returns (bool) { address sender = messageSender; tokenState.setAllowance(sender, spender, value); emitApproval(sender, spender, value); return true; } /* ========== EVENTS ========== */ function addressToBytes32(address input) internal pure returns (bytes32) { return bytes32(uint256(uint160(input))); } event Transfer(address indexed from, address indexed to, uint value); bytes32 internal constant TRANSFER_SIG = keccak256("Transfer(address,address,uint256)"); function emitTransfer( address from, address to, uint value ) internal { proxy._emit(abi.encode(value), 3, TRANSFER_SIG, addressToBytes32(from), addressToBytes32(to), 0); } event Approval(address indexed owner, address indexed spender, uint value); bytes32 internal constant APPROVAL_SIG = keccak256("Approval(address,address,uint256)"); function emitApproval( address owner, address spender, uint value ) internal { proxy._emit(abi.encode(value), 3, APPROVAL_SIG, addressToBytes32(owner), addressToBytes32(spender), 0); } event TokenStateUpdated(address newTokenState); bytes32 internal constant TOKENSTATEUPDATED_SIG = keccak256("TokenStateUpdated(address)"); function emitTokenStateUpdated(address newTokenState) internal { proxy._emit(abi.encode(newTokenState), 1, TOKENSTATEUPDATED_SIG, 0, 0, 0); } } // https://docs.synthetix.io/contracts/source/interfaces/iaddressresolver interface IAddressResolver { function getAddress(bytes32 name) external view returns (address); function getSynth(bytes32 key) external view returns (address); function requireAndGetAddress(bytes32 name, string calldata reason) external view returns (address); } // https://docs.synthetix.io/contracts/source/interfaces/isynth interface ISynth { // Views function currencyKey() external view returns (bytes32); function transferableSynths(address account) external view returns (uint); // Mutative functions function transferAndSettle(address to, uint value) external returns (bool); function transferFromAndSettle( address from, address to, uint value ) external returns (bool); // Restricted: used internally to Synthetix function burn(address account, uint amount) external; function issue(address account, uint amount) external; } // https://docs.synthetix.io/contracts/source/interfaces/iissuer interface IIssuer { // Views function anySynthOrSNXRateIsInvalid() external view returns (bool anyRateInvalid); function availableCurrencyKeys() external view returns (bytes32[] memory); function availableSynthCount() external view returns (uint); function availableSynths(uint index) external view returns (ISynth); function canBurnSynths(address account) external view returns (bool); function collateral(address account) external view returns (uint); function collateralisationRatio(address issuer) external view returns (uint); function collateralisationRatioAndAnyRatesInvalid(address _issuer) external view returns (uint cratio, bool anyRateIsInvalid); function debtBalanceOf(address issuer, bytes32 currencyKey) external view returns (uint debtBalance); function issuanceRatio() external view returns (uint); function lastIssueEvent(address account) external view returns (uint); function maxIssuableSynths(address issuer) external view returns (uint maxIssuable); function minimumStakeTime() external view returns (uint); function remainingIssuableSynths(address issuer) external view returns ( uint maxIssuable, uint alreadyIssued, uint totalSystemDebt ); function synths(bytes32 currencyKey) external view returns (ISynth); function getSynths(bytes32[] calldata currencyKeys) external view returns (ISynth[] memory); function synthsByAddress(address synthAddress) external view returns (bytes32); function totalIssuedSynths(bytes32 currencyKey, bool excludeEtherCollateral) external view returns (uint); function transferableSynthetixAndAnyRateIsInvalid(address account, uint balance) external view returns (uint transferable, bool anyRateIsInvalid); // Restricted: used internally to Synthetix function issueSynths(address from, uint amount) external; function issueSynthsOnBehalf( address issueFor, address from, uint amount ) external; function issueMaxSynths(address from) external; function issueMaxSynthsOnBehalf(address issueFor, address from) external; function burnSynths(address from, uint amount) external; function burnSynthsOnBehalf( address burnForAddress, address from, uint amount ) external; function burnSynthsToTarget(address from) external; function burnSynthsToTargetOnBehalf(address burnForAddress, address from) external; function liquidateDelinquentAccount( address account, uint susdAmount, address liquidator ) external returns (uint totalRedeemed, uint amountToLiquidate); } // Inheritance // Internal references // https://docs.synthetix.io/contracts/source/contracts/addressresolver contract AddressResolver is Owned, IAddressResolver { mapping(bytes32 => address) public repository; constructor(address _owner) public Owned(_owner) {} /* ========== RESTRICTED FUNCTIONS ========== */ function importAddresses(bytes32[] calldata names, address[] calldata destinations) external onlyOwner { require(names.length == destinations.length, "Input lengths must match"); for (uint i = 0; i < names.length; i++) { bytes32 name = names[i]; address destination = destinations[i]; repository[name] = destination; emit AddressImported(name, destination); } } /* ========= PUBLIC FUNCTIONS ========== */ function rebuildCaches(MixinResolver[] calldata destinations) external { for (uint i = 0; i < destinations.length; i++) { destinations[i].rebuildCache(); } } /* ========== VIEWS ========== */ function areAddressesImported(bytes32[] calldata names, address[] calldata destinations) external view returns (bool) { for (uint i = 0; i < names.length; i++) { if (repository[names[i]] != destinations[i]) { return false; } } return true; } function getAddress(bytes32 name) external view returns (address) { return repository[name]; } function requireAndGetAddress(bytes32 name, string calldata reason) external view returns (address) { address _foundAddress = repository[name]; require(_foundAddress != address(0), reason); return _foundAddress; } function getSynth(bytes32 key) external view returns (address) { IIssuer issuer = IIssuer(repository["Issuer"]); require(address(issuer) != address(0), "Cannot find Issuer address"); return address(issuer.synths(key)); } /* ========== EVENTS ========== */ event AddressImported(bytes32 name, address destination); } // solhint-disable payable-fallback // https://docs.synthetix.io/contracts/source/contracts/readproxy contract ReadProxy is Owned { address public target; constructor(address _owner) public Owned(_owner) {} function setTarget(address _target) external onlyOwner { target = _target; emit TargetUpdated(target); } function() external { // The basics of a proxy read call // Note that msg.sender in the underlying will always be the address of this contract. assembly { calldatacopy(0, 0, calldatasize) // Use of staticcall - this will revert if the underlying function mutates state let result := staticcall(gas, sload(target_slot), 0, calldatasize, 0, 0) returndatacopy(0, 0, returndatasize) if iszero(result) { revert(0, returndatasize) } return(0, returndatasize) } } event TargetUpdated(address newTarget); } // Inheritance // Internal references // https://docs.synthetix.io/contracts/source/contracts/mixinresolver contract MixinResolver { AddressResolver public resolver; mapping(bytes32 => address) private addressCache; constructor(address _resolver) internal { resolver = AddressResolver(_resolver); } /* ========== INTERNAL FUNCTIONS ========== */ function combineArrays(bytes32[] memory first, bytes32[] memory second) internal pure returns (bytes32[] memory combination) { combination = new bytes32[](first.length + second.length); for (uint i = 0; i < first.length; i++) { combination[i] = first[i]; } for (uint j = 0; j < second.length; j++) { combination[first.length + j] = second[j]; } } /* ========== PUBLIC FUNCTIONS ========== */ // Note: this function is public not external in order for it to be overridden and invoked via super in subclasses function resolverAddressesRequired() public view returns (bytes32[] memory addresses) {} function rebuildCache() public { bytes32[] memory requiredAddresses = resolverAddressesRequired(); // The resolver must call this function whenver it updates its state for (uint i = 0; i < requiredAddresses.length; i++) { bytes32 name = requiredAddresses[i]; // Note: can only be invoked once the resolver has all the targets needed added address destination = resolver.requireAndGetAddress( name, string(abi.encodePacked("Resolver missing target: ", name)) ); addressCache[name] = destination; emit CacheUpdated(name, destination); } } /* ========== VIEWS ========== */ function isResolverCached() external view returns (bool) { bytes32[] memory requiredAddresses = resolverAddressesRequired(); for (uint i = 0; i < requiredAddresses.length; i++) { bytes32 name = requiredAddresses[i]; // false if our cache is invalid or if the resolver doesn't have the required address if (resolver.getAddress(name) != addressCache[name] || addressCache[name] == address(0)) { return false; } } return true; } /* ========== INTERNAL FUNCTIONS ========== */ function requireAndGetAddress(bytes32 name) internal view returns (address) { address _foundAddress = addressCache[name]; require(_foundAddress != address(0), string(abi.encodePacked("Missing address: ", name))); return _foundAddress; } /* ========== EVENTS ========== */ event CacheUpdated(bytes32 name, address destination); } interface IVirtualSynth { // Views function balanceOfUnderlying(address account) external view returns (uint); function rate() external view returns (uint); function readyToSettle() external view returns (bool); function secsLeftInWaitingPeriod() external view returns (uint); function settled() external view returns (bool); function synth() external view returns (ISynth); // Mutative functions function settle(address account) external; } // https://docs.synthetix.io/contracts/source/interfaces/isynthetix interface ISynthetix { // Views function anySynthOrSNXRateIsInvalid() external view returns (bool anyRateInvalid); function availableCurrencyKeys() external view returns (bytes32[] memory); function availableSynthCount() external view returns (uint); function availableSynths(uint index) external view returns (ISynth); function collateral(address account) external view returns (uint); function collateralisationRatio(address issuer) external view returns (uint); function debtBalanceOf(address issuer, bytes32 currencyKey) external view returns (uint); function isWaitingPeriod(bytes32 currencyKey) external view returns (bool); function maxIssuableSynths(address issuer) external view returns (uint maxIssuable); function remainingIssuableSynths(address issuer) external view returns ( uint maxIssuable, uint alreadyIssued, uint totalSystemDebt ); function synths(bytes32 currencyKey) external view returns (ISynth); function synthsByAddress(address synthAddress) external view returns (bytes32); function totalIssuedSynths(bytes32 currencyKey) external view returns (uint); function totalIssuedSynthsExcludeEtherCollateral(bytes32 currencyKey) external view returns (uint); function transferableSynthetix(address account) external view returns (uint transferable); // Mutative Functions function burnSynths(uint amount) external; function burnSynthsOnBehalf(address burnForAddress, uint amount) external; function burnSynthsToTarget() external; function burnSynthsToTargetOnBehalf(address burnForAddress) external; function exchange( bytes32 sourceCurrencyKey, uint sourceAmount, bytes32 destinationCurrencyKey ) external returns (uint amountReceived); function exchangeOnBehalf( address exchangeForAddress, bytes32 sourceCurrencyKey, uint sourceAmount, bytes32 destinationCurrencyKey ) external returns (uint amountReceived); function exchangeWithTracking( bytes32 sourceCurrencyKey, uint sourceAmount, bytes32 destinationCurrencyKey, address originator, bytes32 trackingCode ) external returns (uint amountReceived); function exchangeOnBehalfWithTracking( address exchangeForAddress, bytes32 sourceCurrencyKey, uint sourceAmount, bytes32 destinationCurrencyKey, address originator, bytes32 trackingCode ) external returns (uint amountReceived); function exchangeWithVirtual( bytes32 sourceCurrencyKey, uint sourceAmount, bytes32 destinationCurrencyKey, bytes32 trackingCode ) external returns (uint amountReceived, IVirtualSynth vSynth); function issueMaxSynths() external; function issueMaxSynthsOnBehalf(address issueForAddress) external; function issueSynths(uint amount) external; function issueSynthsOnBehalf(address issueForAddress, uint amount) external; function mint() external returns (bool); function settle(bytes32 currencyKey) external returns ( uint reclaimed, uint refunded, uint numEntries ); // Liquidations function liquidateDelinquentAccount(address account, uint susdAmount) external returns (bool); // Restricted Functions function mintSecondary(address account, uint amount) external; function mintSecondaryRewards(uint amount) external; function burnSecondary(address account, uint amount) external; } // https://docs.synthetix.io/contracts/source/interfaces/isynthetixstate interface ISynthetixState { // Views function debtLedger(uint index) external view returns (uint); function issuanceData(address account) external view returns (uint initialDebtOwnership, uint debtEntryIndex); function debtLedgerLength() external view returns (uint); function hasIssued(address account) external view returns (bool); function lastDebtLedgerEntry() external view returns (uint); // Mutative functions function incrementTotalIssuerCount() external; function decrementTotalIssuerCount() external; function setCurrentIssuanceData(address account, uint initialDebtOwnership) external; function appendDebtLedgerValue(uint value) external; function clearIssuanceData(address account) external; } // https://docs.synthetix.io/contracts/source/interfaces/isystemstatus interface ISystemStatus { struct Status { bool canSuspend; bool canResume; } struct Suspension { bool suspended; // reason is an integer code, // 0 => no reason, 1 => upgrading, 2+ => defined by system usage uint248 reason; } // Views function accessControl(bytes32 section, address account) external view returns (bool canSuspend, bool canResume); function requireSystemActive() external view; function requireIssuanceActive() external view; function requireExchangeActive() external view; function requireExchangeBetweenSynthsAllowed(bytes32 sourceCurrencyKey, bytes32 destinationCurrencyKey) external view; function requireSynthActive(bytes32 currencyKey) external view; function requireSynthsActive(bytes32 sourceCurrencyKey, bytes32 destinationCurrencyKey) external view; function systemSuspension() external view returns (bool suspended, uint248 reason); function issuanceSuspension() external view returns (bool suspended, uint248 reason); function exchangeSuspension() external view returns (bool suspended, uint248 reason); function synthExchangeSuspension(bytes32 currencyKey) external view returns (bool suspended, uint248 reason); function synthSuspension(bytes32 currencyKey) external view returns (bool suspended, uint248 reason); function getSynthExchangeSuspensions(bytes32[] calldata synths) external view returns (bool[] memory exchangeSuspensions, uint256[] memory reasons); function getSynthSuspensions(bytes32[] calldata synths) external view returns (bool[] memory suspensions, uint256[] memory reasons); // Restricted functions function suspendSynth(bytes32 currencyKey, uint256 reason) external; function updateAccessControl( bytes32 section, address account, bool canSuspend, bool canResume ) external; } // https://docs.synthetix.io/contracts/source/interfaces/iexchanger interface IExchanger { // Views function calculateAmountAfterSettlement( address from, bytes32 currencyKey, uint amount, uint refunded ) external view returns (uint amountAfterSettlement); function isSynthRateInvalid(bytes32 currencyKey) external view returns (bool); function maxSecsLeftInWaitingPeriod(address account, bytes32 currencyKey) external view returns (uint); function settlementOwing(address account, bytes32 currencyKey) external view returns ( uint reclaimAmount, uint rebateAmount, uint numEntries ); function hasWaitingPeriodOrSettlementOwing(address account, bytes32 currencyKey) external view returns (bool); function feeRateForExchange(bytes32 sourceCurrencyKey, bytes32 destinationCurrencyKey) external view returns (uint exchangeFeeRate); function getAmountsForExchange( uint sourceAmount, bytes32 sourceCurrencyKey, bytes32 destinationCurrencyKey ) external view returns ( uint amountReceived, uint fee, uint exchangeFeeRate ); function priceDeviationThresholdFactor() external view returns (uint); function waitingPeriodSecs() external view returns (uint); // Mutative functions function exchange( address from, bytes32 sourceCurrencyKey, uint sourceAmount, bytes32 destinationCurrencyKey, address destinationAddress ) external returns (uint amountReceived); function exchangeOnBehalf( address exchangeForAddress, address from, bytes32 sourceCurrencyKey, uint sourceAmount, bytes32 destinationCurrencyKey ) external returns (uint amountReceived); function exchangeWithTracking( address from, bytes32 sourceCurrencyKey, uint sourceAmount, bytes32 destinationCurrencyKey, address destinationAddress, address originator, bytes32 trackingCode ) external returns (uint amountReceived); function exchangeOnBehalfWithTracking( address exchangeForAddress, address from, bytes32 sourceCurrencyKey, uint sourceAmount, bytes32 destinationCurrencyKey, address originator, bytes32 trackingCode ) external returns (uint amountReceived); function exchangeWithVirtual( address from, bytes32 sourceCurrencyKey, uint sourceAmount, bytes32 destinationCurrencyKey, address destinationAddress, bytes32 trackingCode ) external returns (uint amountReceived, IVirtualSynth vSynth); function settle(address from, bytes32 currencyKey) external returns ( uint reclaimed, uint refunded, uint numEntries ); function setLastExchangeRateForSynth(bytes32 currencyKey, uint rate) external; function suspendSynthWithInvalidRate(bytes32 currencyKey) external; } // https://docs.synthetix.io/contracts/source/interfaces/irewardsdistribution interface IRewardsDistribution { // Structs struct DistributionData { address destination; uint amount; } // Views function authority() external view returns (address); function distributions(uint index) external view returns (address destination, uint amount); // DistributionData function distributionsLength() external view returns (uint); // Mutative Functions function distributeRewards(uint amount) external returns (bool); } // Inheritance // Internal references contract BaseSynthetix is IERC20, ExternStateToken, MixinResolver, ISynthetix { // ========== STATE VARIABLES ========== // Available Synths which can be used with the system string public constant TOKEN_NAME = "Synthetix Network Token"; string public constant TOKEN_SYMBOL = "SNX"; uint8 public constant DECIMALS = 18; bytes32 public constant sUSD = "sUSD"; // ========== ADDRESS RESOLVER CONFIGURATION ========== bytes32 private constant CONTRACT_SYNTHETIXSTATE = "SynthetixState"; bytes32 private constant CONTRACT_SYSTEMSTATUS = "SystemStatus"; bytes32 private constant CONTRACT_EXCHANGER = "Exchanger"; bytes32 private constant CONTRACT_ISSUER = "Issuer"; bytes32 private constant CONTRACT_REWARDSDISTRIBUTION = "RewardsDistribution"; // ========== CONSTRUCTOR ========== constructor( address payable _proxy, TokenState _tokenState, address _owner, uint _totalSupply, address _resolver ) public ExternStateToken(_proxy, _tokenState, TOKEN_NAME, TOKEN_SYMBOL, _totalSupply, DECIMALS, _owner) MixinResolver(_resolver) {} // ========== VIEWS ========== // Note: use public visibility so that it can be invoked in a subclass function resolverAddressesRequired() public view returns (bytes32[] memory addresses) { addresses = new bytes32[](5); addresses[0] = CONTRACT_SYNTHETIXSTATE; addresses[1] = CONTRACT_SYSTEMSTATUS; addresses[2] = CONTRACT_EXCHANGER; addresses[3] = CONTRACT_ISSUER; addresses[4] = CONTRACT_REWARDSDISTRIBUTION; } function synthetixState() internal view returns (ISynthetixState) { return ISynthetixState(requireAndGetAddress(CONTRACT_SYNTHETIXSTATE)); } function systemStatus() internal view returns (ISystemStatus) { return ISystemStatus(requireAndGetAddress(CONTRACT_SYSTEMSTATUS)); } function exchanger() internal view returns (IExchanger) { return IExchanger(requireAndGetAddress(CONTRACT_EXCHANGER)); } function issuer() internal view returns (IIssuer) { return IIssuer(requireAndGetAddress(CONTRACT_ISSUER)); } function rewardsDistribution() internal view returns (IRewardsDistribution) { return IRewardsDistribution(requireAndGetAddress(CONTRACT_REWARDSDISTRIBUTION)); } function debtBalanceOf(address account, bytes32 currencyKey) external view returns (uint) { return issuer().debtBalanceOf(account, currencyKey); } function totalIssuedSynths(bytes32 currencyKey) external view returns (uint) { return issuer().totalIssuedSynths(currencyKey, false); } function totalIssuedSynthsExcludeEtherCollateral(bytes32 currencyKey) external view returns (uint) { return issuer().totalIssuedSynths(currencyKey, true); } function availableCurrencyKeys() external view returns (bytes32[] memory) { return issuer().availableCurrencyKeys(); } function availableSynthCount() external view returns (uint) { return issuer().availableSynthCount(); } function availableSynths(uint index) external view returns (ISynth) { return issuer().availableSynths(index); } function synths(bytes32 currencyKey) external view returns (ISynth) { return issuer().synths(currencyKey); } function synthsByAddress(address synthAddress) external view returns (bytes32) { return issuer().synthsByAddress(synthAddress); } function isWaitingPeriod(bytes32 currencyKey) external view returns (bool) { return exchanger().maxSecsLeftInWaitingPeriod(messageSender, currencyKey) > 0; } function anySynthOrSNXRateIsInvalid() external view returns (bool anyRateInvalid) { return issuer().anySynthOrSNXRateIsInvalid(); } function maxIssuableSynths(address account) external view returns (uint maxIssuable) { return issuer().maxIssuableSynths(account); } function remainingIssuableSynths(address account) external view returns ( uint maxIssuable, uint alreadyIssued, uint totalSystemDebt ) { return issuer().remainingIssuableSynths(account); } function collateralisationRatio(address _issuer) external view returns (uint) { return issuer().collateralisationRatio(_issuer); } function collateral(address account) external view returns (uint) { return issuer().collateral(account); } function transferableSynthetix(address account) external view returns (uint transferable) { (transferable, ) = issuer().transferableSynthetixAndAnyRateIsInvalid(account, tokenState.balanceOf(account)); } function _canTransfer(address account, uint value) internal view returns (bool) { (uint initialDebtOwnership, ) = synthetixState().issuanceData(account); if (initialDebtOwnership > 0) { (uint transferable, bool anyRateIsInvalid) = issuer().transferableSynthetixAndAnyRateIsInvalid( account, tokenState.balanceOf(account) ); require(value <= transferable, "Cannot transfer staked or escrowed SNX"); require(!anyRateIsInvalid, "A synth or SNX rate is invalid"); } return true; } // ========== MUTATIVE FUNCTIONS ========== function transfer(address to, uint value) external optionalProxy systemActive returns (bool) { // Ensure they're not trying to exceed their locked amount -- only if they have debt. _canTransfer(messageSender, value); // Perform the transfer: if there is a problem an exception will be thrown in this call. _transferByProxy(messageSender, to, value); return true; } function transferFrom( address from, address to, uint value ) external optionalProxy systemActive returns (bool) { // Ensure they're not trying to exceed their locked amount -- only if they have debt. _canTransfer(from, value); // Perform the transfer: if there is a problem, // an exception will be thrown in this call. return _transferFromByProxy(messageSender, from, to, value); } function issueSynths(uint amount) external issuanceActive optionalProxy { return issuer().issueSynths(messageSender, amount); } function issueSynthsOnBehalf(address issueForAddress, uint amount) external issuanceActive optionalProxy { return issuer().issueSynthsOnBehalf(issueForAddress, messageSender, amount); } function issueMaxSynths() external issuanceActive optionalProxy { return issuer().issueMaxSynths(messageSender); } function issueMaxSynthsOnBehalf(address issueForAddress) external issuanceActive optionalProxy { return issuer().issueMaxSynthsOnBehalf(issueForAddress, messageSender); } function burnSynths(uint amount) external issuanceActive optionalProxy { return issuer().burnSynths(messageSender, amount); } function burnSynthsOnBehalf(address burnForAddress, uint amount) external issuanceActive optionalProxy { return issuer().burnSynthsOnBehalf(burnForAddress, messageSender, amount); } function burnSynthsToTarget() external issuanceActive optionalProxy { return issuer().burnSynthsToTarget(messageSender); } function burnSynthsToTargetOnBehalf(address burnForAddress) external issuanceActive optionalProxy { return issuer().burnSynthsToTargetOnBehalf(burnForAddress, messageSender); } function exchange( bytes32, uint, bytes32 ) external returns (uint) { _notImplemented(); } function exchangeOnBehalf( address, bytes32, uint, bytes32 ) external returns (uint) { _notImplemented(); } function exchangeWithTracking( bytes32, uint, bytes32, address, bytes32 ) external returns (uint) { _notImplemented(); } function exchangeOnBehalfWithTracking( address, bytes32, uint, bytes32, address, bytes32 ) external returns (uint) { _notImplemented(); } function exchangeWithVirtual( bytes32, uint, bytes32, bytes32 ) external returns (uint, IVirtualSynth) { _notImplemented(); } function settle(bytes32) external returns ( uint, uint, uint ) { _notImplemented(); } function mint() external returns (bool) { _notImplemented(); } function liquidateDelinquentAccount(address, uint) external returns (bool) { _notImplemented(); } function mintSecondary(address, uint) external { _notImplemented(); } function mintSecondaryRewards(uint) external { _notImplemented(); } function burnSecondary(address, uint) external { _notImplemented(); } function _notImplemented() internal pure { revert("Cannot be run on this layer"); } // ========== MODIFIERS ========== modifier systemActive() { _systemActive(); _; } function _systemActive() private { systemStatus().requireSystemActive(); } modifier issuanceActive() { _issuanceActive(); _; } function _issuanceActive() private { systemStatus().requireIssuanceActive(); } } // https://docs.synthetix.io/contracts/source/interfaces/irewardescrow interface IRewardEscrow { // Views function balanceOf(address account) external view returns (uint); function numVestingEntries(address account) external view returns (uint); function totalEscrowedAccountBalance(address account) external view returns (uint); function totalVestedAccountBalance(address account) external view returns (uint); function getVestingScheduleEntry(address account, uint index) external view returns (uint[2] memory); function getNextVestingIndex(address account) external view returns (uint); // Mutative functions function appendVestingEntry(address account, uint quantity) external; function vest() external; } pragma experimental ABIEncoderV2; library VestingEntries { struct VestingEntry { uint64 endTime; uint256 escrowAmount; } struct VestingEntryWithID { uint64 endTime; uint256 escrowAmount; uint256 entryID; } } interface IRewardEscrowV2 { // Views function balanceOf(address account) external view returns (uint); function numVestingEntries(address account) external view returns (uint); function totalEscrowedAccountBalance(address account) external view returns (uint); function totalVestedAccountBalance(address account) external view returns (uint); function getVestingQuantity(address account, uint256[] calldata entryIDs) external view returns (uint); function getVestingSchedules( address account, uint256 index, uint256 pageSize ) external view returns (VestingEntries.VestingEntryWithID[] memory); function getAccountVestingEntryIDs( address account, uint256 index, uint256 pageSize ) external view returns (uint256[] memory); function getVestingEntryClaimable(address account, uint256 entryID) external view returns (uint); function getVestingEntry(address account, uint256 entryID) external view returns (uint64, uint256); // Mutative functions function vest(uint256[] calldata entryIDs) external; function createEscrowEntry( address beneficiary, uint256 deposit, uint256 duration ) external; function appendVestingEntry( address account, uint256 quantity, uint256 duration ) external; function migrateVestingSchedule(address _addressToMigrate) external; function migrateAccountEscrowBalances( address[] calldata accounts, uint256[] calldata escrowBalances, uint256[] calldata vestedBalances ) external; // Account Merging function startMergingWindow() external; function mergeAccount(address accountToMerge, uint256[] calldata entryIDs) external; function nominateAccountToMerge(address account) external; function accountMergingIsOpen() external view returns (bool); // L2 Migration function importVestingEntries( address account, uint256 escrowedAmount, VestingEntries.VestingEntry[] calldata vestingEntries ) external; // Return amount of SNX transfered to SynthetixBridgeToOptimism deposit contract function burnForMigration(address account, uint256[] calldata entryIDs) external returns (uint256 escrowedAccountBalance, VestingEntries.VestingEntry[] memory vestingEntries); } // https://docs.synthetix.io/contracts/source/interfaces/isupplyschedule interface ISupplySchedule { // Views function mintableSupply() external view returns (uint); function isMintable() external view returns (bool); function minterReward() external view returns (uint); // Mutative functions function recordMintEvent(uint supplyMinted) external returns (bool); } // Inheritance // Internal references // https://docs.synthetix.io/contracts/source/contracts/synthetix contract Synthetix is BaseSynthetix { // ========== ADDRESS RESOLVER CONFIGURATION ========== bytes32 private constant CONTRACT_REWARD_ESCROW = "RewardEscrow"; bytes32 private constant CONTRACT_REWARDESCROW_V2 = "RewardEscrowV2"; bytes32 private constant CONTRACT_SUPPLYSCHEDULE = "SupplySchedule"; // ========== CONSTRUCTOR ========== constructor( address payable _proxy, TokenState _tokenState, address _owner, uint _totalSupply, address _resolver ) public BaseSynthetix(_proxy, _tokenState, _owner, _totalSupply, _resolver) {} function resolverAddressesRequired() public view returns (bytes32[] memory addresses) { bytes32[] memory existingAddresses = BaseSynthetix.resolverAddressesRequired(); bytes32[] memory newAddresses = new bytes32[](3); newAddresses[0] = CONTRACT_REWARD_ESCROW; newAddresses[1] = CONTRACT_REWARDESCROW_V2; newAddresses[2] = CONTRACT_SUPPLYSCHEDULE; return combineArrays(existingAddresses, newAddresses); } // ========== VIEWS ========== function rewardEscrow() internal view returns (IRewardEscrow) { return IRewardEscrow(requireAndGetAddress(CONTRACT_REWARD_ESCROW)); } function rewardEscrowV2() internal view returns (IRewardEscrowV2) { return IRewardEscrowV2(requireAndGetAddress(CONTRACT_REWARDESCROW_V2)); } function supplySchedule() internal view returns (ISupplySchedule) { return ISupplySchedule(requireAndGetAddress(CONTRACT_SUPPLYSCHEDULE)); } // ========== OVERRIDDEN FUNCTIONS ========== function exchange( bytes32 sourceCurrencyKey, uint sourceAmount, bytes32 destinationCurrencyKey ) external exchangeActive(sourceCurrencyKey, destinationCurrencyKey) optionalProxy returns (uint amountReceived) { return exchanger().exchange(messageSender, sourceCurrencyKey, sourceAmount, destinationCurrencyKey, messageSender); } function exchangeOnBehalf( address exchangeForAddress, bytes32 sourceCurrencyKey, uint sourceAmount, bytes32 destinationCurrencyKey ) external exchangeActive(sourceCurrencyKey, destinationCurrencyKey) optionalProxy returns (uint amountReceived) { return exchanger().exchangeOnBehalf( exchangeForAddress, messageSender, sourceCurrencyKey, sourceAmount, destinationCurrencyKey ); } function exchangeWithTracking( bytes32 sourceCurrencyKey, uint sourceAmount, bytes32 destinationCurrencyKey, address originator, bytes32 trackingCode ) external exchangeActive(sourceCurrencyKey, destinationCurrencyKey) optionalProxy returns (uint amountReceived) { return exchanger().exchangeWithTracking( messageSender, sourceCurrencyKey, sourceAmount, destinationCurrencyKey, messageSender, originator, trackingCode ); } function exchangeOnBehalfWithTracking( address exchangeForAddress, bytes32 sourceCurrencyKey, uint sourceAmount, bytes32 destinationCurrencyKey, address originator, bytes32 trackingCode ) external exchangeActive(sourceCurrencyKey, destinationCurrencyKey) optionalProxy returns (uint amountReceived) { return exchanger().exchangeOnBehalfWithTracking( exchangeForAddress, messageSender, sourceCurrencyKey, sourceAmount, destinationCurrencyKey, originator, trackingCode ); } function exchangeWithVirtual( bytes32 sourceCurrencyKey, uint sourceAmount, bytes32 destinationCurrencyKey, bytes32 trackingCode ) external exchangeActive(sourceCurrencyKey, destinationCurrencyKey) optionalProxy returns (uint amountReceived, IVirtualSynth vSynth) { return exchanger().exchangeWithVirtual( messageSender, sourceCurrencyKey, sourceAmount, destinationCurrencyKey, messageSender, trackingCode ); } function settle(bytes32 currencyKey) external optionalProxy returns ( uint reclaimed, uint refunded, uint numEntriesSettled ) { return exchanger().settle(messageSender, currencyKey); } function mint() external issuanceActive returns (bool) { require(address(rewardsDistribution()) != address(0), "RewardsDistribution not set"); ISupplySchedule _supplySchedule = supplySchedule(); IRewardsDistribution _rewardsDistribution = rewardsDistribution(); uint supplyToMint = _supplySchedule.mintableSupply(); require(supplyToMint > 0, "No supply is mintable"); // record minting event before mutation to token supply _supplySchedule.recordMintEvent(supplyToMint); // Set minted SNX balance to RewardEscrow's balance // Minus the minterReward and set balance of minter to add reward uint minterReward = _supplySchedule.minterReward(); // Get the remainder uint amountToDistribute = supplyToMint.sub(minterReward); // Set the token balance to the RewardsDistribution contract tokenState.setBalanceOf( address(_rewardsDistribution), tokenState.balanceOf(address(_rewardsDistribution)).add(amountToDistribute) ); emitTransfer(address(this), address(_rewardsDistribution), amountToDistribute); // Kick off the distribution of rewards _rewardsDistribution.distributeRewards(amountToDistribute); // Assign the minters reward. tokenState.setBalanceOf(msg.sender, tokenState.balanceOf(msg.sender).add(minterReward)); emitTransfer(address(this), msg.sender, minterReward); totalSupply = totalSupply.add(supplyToMint); return true; } function liquidateDelinquentAccount(address account, uint susdAmount) external systemActive optionalProxy returns (bool) { (uint totalRedeemed, uint amountLiquidated) = issuer().liquidateDelinquentAccount( account, susdAmount, messageSender ); emitAccountLiquidated(account, totalRedeemed, amountLiquidated, messageSender); // Transfer SNX redeemed to messageSender // Reverts if amount to redeem is more than balanceOf account, ie due to escrowed balance return _transferByProxy(account, messageSender, totalRedeemed); } /* Once off function for SIP-60 to migrate SNX balances in the RewardEscrow contract * To the new RewardEscrowV2 contract */ function migrateEscrowBalanceToRewardEscrowV2() external onlyOwner { // Record balanceOf(RewardEscrow) contract uint rewardEscrowBalance = tokenState.balanceOf(address(rewardEscrow())); // transfer all of RewardEscrow's balance to RewardEscrowV2 // _internalTransfer emits the transfer event _internalTransfer(address(rewardEscrow()), address(rewardEscrowV2()), rewardEscrowBalance); } // ========== EVENTS ========== event SynthExchange( address indexed account, bytes32 fromCurrencyKey, uint256 fromAmount, bytes32 toCurrencyKey, uint256 toAmount, address toAddress ); bytes32 internal constant SYNTHEXCHANGE_SIG = keccak256( "SynthExchange(address,bytes32,uint256,bytes32,uint256,address)" ); function emitSynthExchange( address account, bytes32 fromCurrencyKey, uint256 fromAmount, bytes32 toCurrencyKey, uint256 toAmount, address toAddress ) external onlyExchanger { proxy._emit( abi.encode(fromCurrencyKey, fromAmount, toCurrencyKey, toAmount, toAddress), 2, SYNTHEXCHANGE_SIG, addressToBytes32(account), 0, 0 ); } event ExchangeTracking(bytes32 indexed trackingCode, bytes32 toCurrencyKey, uint256 toAmount); bytes32 internal constant EXCHANGE_TRACKING_SIG = keccak256("ExchangeTracking(bytes32,bytes32,uint256)"); function emitExchangeTracking( bytes32 trackingCode, bytes32 toCurrencyKey, uint256 toAmount ) external onlyExchanger { proxy._emit(abi.encode(toCurrencyKey, toAmount), 2, EXCHANGE_TRACKING_SIG, trackingCode, 0, 0); } event ExchangeReclaim(address indexed account, bytes32 currencyKey, uint amount); bytes32 internal constant EXCHANGERECLAIM_SIG = keccak256("ExchangeReclaim(address,bytes32,uint256)"); function emitExchangeReclaim( address account, bytes32 currencyKey, uint256 amount ) external onlyExchanger { proxy._emit(abi.encode(currencyKey, amount), 2, EXCHANGERECLAIM_SIG, addressToBytes32(account), 0, 0); } event ExchangeRebate(address indexed account, bytes32 currencyKey, uint amount); bytes32 internal constant EXCHANGEREBATE_SIG = keccak256("ExchangeRebate(address,bytes32,uint256)"); function emitExchangeRebate( address account, bytes32 currencyKey, uint256 amount ) external onlyExchanger { proxy._emit(abi.encode(currencyKey, amount), 2, EXCHANGEREBATE_SIG, addressToBytes32(account), 0, 0); } event AccountLiquidated(address indexed account, uint snxRedeemed, uint amountLiquidated, address liquidator); bytes32 internal constant ACCOUNTLIQUIDATED_SIG = keccak256("AccountLiquidated(address,uint256,uint256,address)"); function emitAccountLiquidated( address account, uint256 snxRedeemed, uint256 amountLiquidated, address liquidator ) internal { proxy._emit( abi.encode(snxRedeemed, amountLiquidated, liquidator), 2, ACCOUNTLIQUIDATED_SIG, addressToBytes32(account), 0, 0 ); } // ========== MODIFIERS ========== modifier onlyExchanger() { _onlyExchanger(); _; } function _onlyExchanger() private { require(msg.sender == address(exchanger()), "Only Exchanger can invoke this"); } modifier exchangeActive(bytes32 src, bytes32 dest) { _exchangeActive(src, dest); _; } function _exchangeActive(bytes32 src, bytes32 dest) private { systemStatus().requireExchangeBetweenSynthsAllowed(src, dest); } }
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- No Contract Security Audit Submitted- Submit Audit Here
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Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000c011a73ee8576fb46f5e1c5751ca3b9fe0af2a6f0000000000000000000000005b1b5fea1b99d83ad479df0c222f0492385381dd000000000000000000000000de910777c787903f78c89e7a0bf7f4c435cbb1fe000000000000000000000000000000000000000000b3bd9fcc3ccf44d6a513180000000000000000000000004e3b31eb0e5cb73641ee1e65e7dcefe520ba3ef2
-----Decoded View---------------
Arg [0] : _proxy (address): 0xc011a73ee8576fb46f5e1c5751ca3b9fe0af2a6f
Arg [1] : _tokenState (address): 0x5b1b5fea1b99d83ad479df0c222f0492385381dd
Arg [2] : _owner (address): 0xde910777c787903f78c89e7a0bf7f4c435cbb1fe
Arg [3] : _totalSupply (uint256): 217293196725454281942307608
Arg [4] : _resolver (address): 0x4e3b31eb0e5cb73641ee1e65e7dcefe520ba3ef2
-----Encoded View---------------
5 Constructor Arguments found :
Arg [0] : 000000000000000000000000c011a73ee8576fb46f5e1c5751ca3b9fe0af2a6f
Arg [1] : 0000000000000000000000005b1b5fea1b99d83ad479df0c222f0492385381dd
Arg [2] : 000000000000000000000000de910777c787903f78c89e7a0bf7f4c435cbb1fe
Arg [3] : 000000000000000000000000000000000000000000b3bd9fcc3ccf44d6a51318
Arg [4] : 0000000000000000000000004e3b31eb0e5cb73641ee1e65e7dcefe520ba3ef2
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