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Contract Name:
CollateralManager
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 2020-12-24
*/
/*
____ __ __ __ _
/ __/__ __ ___ / /_ / / ___ / /_ (_)__ __
_\ \ / // // _ \/ __// _ \/ -_)/ __// / \ \ /
/___/ \_, //_//_/\__//_//_/\__/ \__//_/ /_\_\
/___/
* Synthetix: CollateralManager.sol
*
* Latest source (may be newer): https://github.com/Synthetixio/synthetix/blob/master/contracts/CollateralManager.sol
* Docs: https://docs.synthetix.io/contracts/CollateralManager
*
* Contract Dependencies:
* - IAddressResolver
* - ICollateralManager
* - MixinResolver
* - Owned
* - Pausable
* - State
* Libraries:
* - AddressSetLib
* - Bytes32SetLib
* - SafeDecimalMath
* - SafeMath
*
* MIT License
* ===========
*
* Copyright (c) 2020 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 ^0.5.16;
// 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
// https://docs.synthetix.io/contracts/source/contracts/pausable
contract Pausable is Owned {
uint public lastPauseTime;
bool public paused;
constructor() internal {
// This contract is abstract, and thus cannot be instantiated directly
require(owner != address(0), "Owner must be set");
// Paused will be false, and lastPauseTime will be 0 upon initialisation
}
/**
* @notice Change the paused state of the contract
* @dev Only the contract owner may call this.
*/
function setPaused(bool _paused) external onlyOwner {
// Ensure we're actually changing the state before we do anything
if (_paused == paused) {
return;
}
// Set our paused state.
paused = _paused;
// If applicable, set the last pause time.
if (paused) {
lastPauseTime = now;
}
// Let everyone know that our pause state has changed.
emit PauseChanged(paused);
}
event PauseChanged(bool isPaused);
modifier notPaused {
require(!paused, "This action cannot be performed while the contract is paused");
_;
}
}
// 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 ICollateralManager {
// Manager information
function hasCollateral(address collateral) external view returns (bool);
function isSynthManaged(bytes32 currencyKey) external view returns (bool);
// State information
function long(bytes32 synth) external view returns (uint amount);
function short(bytes32 synth) external view returns (uint amount);
function totalLong() external view returns (uint susdValue, bool anyRateIsInvalid);
function totalShort() external view returns (uint susdValue, bool anyRateIsInvalid);
function getBorrowRate() external view returns (uint borrowRate, bool anyRateIsInvalid);
function getShortRate(bytes32 synth) external view returns (uint shortRate, bool rateIsInvalid);
function getRatesAndTime(uint index)
external
view
returns (
uint entryRate,
uint lastRate,
uint lastUpdated,
uint newIndex
);
function getShortRatesAndTime(bytes32 currency, uint index)
external
view
returns (
uint entryRate,
uint lastRate,
uint lastUpdated,
uint newIndex
);
function exceedsDebtLimit(uint amount, bytes32 currency) external view returns (bool canIssue, bool anyRateIsInvalid);
function areSynthsAndCurrenciesSet(bytes32[] calldata requiredSynthNamesInResolver, bytes32[] calldata synthKeys)
external
view
returns (bool);
function areShortableSynthsSet(bytes32[] calldata requiredSynthNamesInResolver, bytes32[] calldata synthKeys)
external
view
returns (bool);
// Loans
function getNewLoanId() external returns (uint id);
// Manager mutative
function addCollaterals(address[] calldata collaterals) external;
function removeCollaterals(address[] calldata collaterals) external;
function addSynths(bytes32[] calldata synthNamesInResolver, bytes32[] calldata synthKeys) external;
function removeSynths(bytes32[] calldata synths, bytes32[] calldata synthKeys) external;
function addShortableSynths(bytes32[2][] calldata requiredSynthAndInverseNamesInResolver, bytes32[] calldata synthKeys)
external;
function removeShortableSynths(bytes32[] calldata synths) external;
// State mutative
function updateBorrowRates(uint rate) external;
function updateShortRates(bytes32 currency, uint rate) external;
function incrementLongs(bytes32 synth, uint amount) external;
function decrementLongs(bytes32 synth, uint amount) external;
function incrementShorts(bytes32 synth, uint amount) external;
function decrementShorts(bytes32 synth, uint amount) external;
}
// https://docs.synthetix.io/contracts/source/libraries/addresssetlib/
library AddressSetLib {
struct AddressSet {
address[] elements;
mapping(address => uint) indices;
}
function contains(AddressSet storage set, address candidate) internal view returns (bool) {
if (set.elements.length == 0) {
return false;
}
uint index = set.indices[candidate];
return index != 0 || set.elements[0] == candidate;
}
function getPage(
AddressSet storage set,
uint index,
uint pageSize
) internal view returns (address[] memory) {
// NOTE: This implementation should be converted to slice operators if the compiler is updated to v0.6.0+
uint endIndex = index + pageSize; // The check below that endIndex <= index handles overflow.
// If the page extends past the end of the list, truncate it.
if (endIndex > set.elements.length) {
endIndex = set.elements.length;
}
if (endIndex <= index) {
return new address[](0);
}
uint n = endIndex - index; // We already checked for negative overflow.
address[] memory page = new address[](n);
for (uint i; i < n; i++) {
page[i] = set.elements[i + index];
}
return page;
}
function add(AddressSet storage set, address element) internal {
// Adding to a set is an idempotent operation.
if (!contains(set, element)) {
set.indices[element] = set.elements.length;
set.elements.push(element);
}
}
function remove(AddressSet storage set, address element) internal {
require(contains(set, element), "Element not in set.");
// Replace the removed element with the last element of the list.
uint index = set.indices[element];
uint lastIndex = set.elements.length - 1; // We required that element is in the list, so it is not empty.
if (index != lastIndex) {
// No need to shift the last element if it is the one we want to delete.
address shiftedElement = set.elements[lastIndex];
set.elements[index] = shiftedElement;
set.indices[shiftedElement] = index;
}
set.elements.pop();
delete set.indices[element];
}
}
// https://docs.synthetix.io/contracts/source/libraries/bytes32setlib/
library Bytes32SetLib {
struct Bytes32Set {
bytes32[] elements;
mapping(bytes32 => uint) indices;
}
function contains(Bytes32Set storage set, bytes32 candidate) internal view returns (bool) {
if (set.elements.length == 0) {
return false;
}
uint index = set.indices[candidate];
return index != 0 || set.elements[0] == candidate;
}
function getPage(
Bytes32Set storage set,
uint index,
uint pageSize
) internal view returns (bytes32[] memory) {
// NOTE: This implementation should be converted to slice operators if the compiler is updated to v0.6.0+
uint endIndex = index + pageSize; // The check below that endIndex <= index handles overflow.
// If the page extends past the end of the list, truncate it.
if (endIndex > set.elements.length) {
endIndex = set.elements.length;
}
if (endIndex <= index) {
return new bytes32[](0);
}
uint n = endIndex - index; // We already checked for negative overflow.
bytes32[] memory page = new bytes32[](n);
for (uint i; i < n; i++) {
page[i] = set.elements[i + index];
}
return page;
}
function add(Bytes32Set storage set, bytes32 element) internal {
// Adding to a set is an idempotent operation.
if (!contains(set, element)) {
set.indices[element] = set.elements.length;
set.elements.push(element);
}
}
function remove(Bytes32Set storage set, bytes32 element) internal {
require(contains(set, element), "Element not in set.");
// Replace the removed element with the last element of the list.
uint index = set.indices[element];
uint lastIndex = set.elements.length - 1; // We required that element is in the list, so it is not empty.
if (index != lastIndex) {
// No need to shift the last element if it is the one we want to delete.
bytes32 shiftedElement = set.elements[lastIndex];
set.elements[index] = shiftedElement;
set.indices[shiftedElement] = index;
}
set.elements.pop();
delete set.indices[element];
}
}
/**
* @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);
}
pragma experimental ABIEncoderV2;
// Inheritance
// Libraries
contract CollateralManagerState is Owned, State {
using SafeMath for uint;
using SafeDecimalMath for uint;
struct Balance {
uint long;
uint short;
}
uint public totalLoans;
uint[] public borrowRates;
uint public borrowRatesLastUpdated;
mapping(bytes32 => uint[]) public shortRates;
mapping(bytes32 => uint) public shortRatesLastUpdated;
// The total amount of long and short for a synth,
mapping(bytes32 => Balance) public totalIssuedSynths;
constructor(address _owner, address _associatedContract) public Owned(_owner) State(_associatedContract) {
borrowRates.push(0);
borrowRatesLastUpdated = block.timestamp;
}
function incrementTotalLoans() external onlyAssociatedContract returns (uint) {
totalLoans = totalLoans.add(1);
return totalLoans;
}
function long(bytes32 synth) external view onlyAssociatedContract returns (uint) {
return totalIssuedSynths[synth].long;
}
function short(bytes32 synth) external view onlyAssociatedContract returns (uint) {
return totalIssuedSynths[synth].short;
}
function incrementLongs(bytes32 synth, uint256 amount) external onlyAssociatedContract {
totalIssuedSynths[synth].long = totalIssuedSynths[synth].long.add(amount);
}
function decrementLongs(bytes32 synth, uint256 amount) external onlyAssociatedContract {
totalIssuedSynths[synth].long = totalIssuedSynths[synth].long.sub(amount);
}
function incrementShorts(bytes32 synth, uint256 amount) external onlyAssociatedContract {
totalIssuedSynths[synth].short = totalIssuedSynths[synth].short.add(amount);
}
function decrementShorts(bytes32 synth, uint256 amount) external onlyAssociatedContract {
totalIssuedSynths[synth].short = totalIssuedSynths[synth].short.sub(amount);
}
// Borrow rates, one array here for all currencies.
function getRateAt(uint index) public view returns (uint) {
return borrowRates[index];
}
function getRatesLength() public view returns (uint) {
return borrowRates.length;
}
function updateBorrowRates(uint rate) external onlyAssociatedContract {
borrowRates.push(rate);
borrowRatesLastUpdated = block.timestamp;
}
function ratesLastUpdated() public view returns (uint) {
return borrowRatesLastUpdated;
}
function getRatesAndTime(uint index)
external
view
returns (
uint entryRate,
uint lastRate,
uint lastUpdated,
uint newIndex
)
{
newIndex = getRatesLength();
entryRate = getRateAt(index);
lastRate = getRateAt(newIndex - 1);
lastUpdated = ratesLastUpdated();
}
// Short rates, one array per currency.
function addShortCurrency(bytes32 currency) external onlyAssociatedContract {
if (shortRates[currency].length > 0) {} else {
shortRates[currency].push(0);
shortRatesLastUpdated[currency] = block.timestamp;
}
}
function removeShortCurrency(bytes32 currency) external onlyAssociatedContract {
delete shortRates[currency];
}
function getShortRateAt(bytes32 currency, uint index) internal view returns (uint) {
return shortRates[currency][index];
}
function getShortRatesLength(bytes32 currency) public view returns (uint) {
return shortRates[currency].length;
}
function updateShortRates(bytes32 currency, uint rate) external onlyAssociatedContract {
shortRates[currency].push(rate);
shortRatesLastUpdated[currency] = block.timestamp;
}
function shortRateLastUpdated(bytes32 currency) internal view returns (uint) {
return shortRatesLastUpdated[currency];
}
function getShortRatesAndTime(bytes32 currency, uint index)
external
view
returns (
uint entryRate,
uint lastRate,
uint lastUpdated,
uint newIndex
)
{
newIndex = getShortRatesLength(currency);
entryRate = getShortRateAt(currency, index);
lastRate = getShortRateAt(currency, newIndex - 1);
lastUpdated = shortRateLastUpdated(currency);
}
}
// https://docs.synthetix.io/contracts/source/interfaces/iexchangerates
interface IExchangeRates {
// Structs
struct RateAndUpdatedTime {
uint216 rate;
uint40 time;
}
struct InversePricing {
uint entryPoint;
uint upperLimit;
uint lowerLimit;
bool frozenAtUpperLimit;
bool frozenAtLowerLimit;
}
// Views
function aggregators(bytes32 currencyKey) external view returns (address);
function aggregatorWarningFlags() external view returns (address);
function anyRateIsInvalid(bytes32[] calldata currencyKeys) external view returns (bool);
function canFreezeRate(bytes32 currencyKey) external view returns (bool);
function currentRoundForRate(bytes32 currencyKey) external view returns (uint);
function currenciesUsingAggregator(address aggregator) external view returns (bytes32[] memory);
function effectiveValue(
bytes32 sourceCurrencyKey,
uint sourceAmount,
bytes32 destinationCurrencyKey
) external view returns (uint value);
function effectiveValueAndRates(
bytes32 sourceCurrencyKey,
uint sourceAmount,
bytes32 destinationCurrencyKey
)
external
view
returns (
uint value,
uint sourceRate,
uint destinationRate
);
function effectiveValueAtRound(
bytes32 sourceCurrencyKey,
uint sourceAmount,
bytes32 destinationCurrencyKey,
uint roundIdForSrc,
uint roundIdForDest
) external view returns (uint value);
function getCurrentRoundId(bytes32 currencyKey) external view returns (uint);
function getLastRoundIdBeforeElapsedSecs(
bytes32 currencyKey,
uint startingRoundId,
uint startingTimestamp,
uint timediff
) external view returns (uint);
function inversePricing(bytes32 currencyKey)
external
view
returns (
uint entryPoint,
uint upperLimit,
uint lowerLimit,
bool frozenAtUpperLimit,
bool frozenAtLowerLimit
);
function lastRateUpdateTimes(bytes32 currencyKey) external view returns (uint256);
function oracle() external view returns (address);
function rateAndTimestampAtRound(bytes32 currencyKey, uint roundId) external view returns (uint rate, uint time);
function rateAndUpdatedTime(bytes32 currencyKey) external view returns (uint rate, uint time);
function rateAndInvalid(bytes32 currencyKey) external view returns (uint rate, bool isInvalid);
function rateForCurrency(bytes32 currencyKey) external view returns (uint);
function rateIsFlagged(bytes32 currencyKey) external view returns (bool);
function rateIsFrozen(bytes32 currencyKey) external view returns (bool);
function rateIsInvalid(bytes32 currencyKey) external view returns (bool);
function rateIsStale(bytes32 currencyKey) external view returns (bool);
function rateStalePeriod() external view returns (uint);
function ratesAndUpdatedTimeForCurrencyLastNRounds(bytes32 currencyKey, uint numRounds)
external
view
returns (uint[] memory rates, uint[] memory times);
function ratesAndInvalidForCurrencies(bytes32[] calldata currencyKeys)
external
view
returns (uint[] memory rates, bool anyRateInvalid);
function ratesForCurrencies(bytes32[] calldata currencyKeys) external view returns (uint[] memory);
// Mutative functions
function freezeRate(bytes32 currencyKey) external;
}
// https://docs.synthetix.io/contracts/source/interfaces/idebtcache
interface IDebtCache {
// Views
function cachedDebt() external view returns (uint);
function cachedSynthDebt(bytes32 currencyKey) external view returns (uint);
function cacheTimestamp() external view returns (uint);
function cacheInvalid() external view returns (bool);
function cacheStale() external view returns (bool);
function currentSynthDebts(bytes32[] calldata currencyKeys)
external
view
returns (uint[] memory debtValues, bool anyRateIsInvalid);
function cachedSynthDebts(bytes32[] calldata currencyKeys) external view returns (uint[] memory debtValues);
function currentDebt() external view returns (uint debt, bool anyRateIsInvalid);
function cacheInfo()
external
view
returns (
uint debt,
uint timestamp,
bool isInvalid,
bool isStale
);
// Mutative functions
function takeDebtSnapshot() external;
function updateCachedSynthDebts(bytes32[] calldata currencyKeys) external;
}
// 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);
}
// Inheritance
// Libraries
// Internal references
contract CollateralManager is ICollateralManager, Owned, Pausable, MixinResolver {
/* ========== LIBRARIES ========== */
using SafeMath for uint;
using SafeDecimalMath for uint;
using AddressSetLib for AddressSetLib.AddressSet;
using Bytes32SetLib for Bytes32SetLib.Bytes32Set;
/* ========== CONSTANTS ========== */
bytes32 private constant sUSD = "sUSD";
uint private constant SECONDS_IN_A_YEAR = 31556926 * 1e18;
// Flexible storage names
bytes32 public constant CONTRACT_NAME = "CollateralManager";
bytes32 internal constant COLLATERAL_SYNTHS = "collateralSynth";
/* ========== STATE VARIABLES ========== */
// Stores debt balances and borrow rates.
CollateralManagerState public state;
// The set of all collateral contracts.
AddressSetLib.AddressSet internal _collaterals;
// The set of all synths issuable by the various collateral contracts
Bytes32SetLib.Bytes32Set internal _synths;
// Map from currency key to synth contract name.
mapping(bytes32 => bytes32) public synthsByKey;
// The set of all synths that are shortable.
Bytes32SetLib.Bytes32Set internal _shortableSynths;
mapping(bytes32 => bytes32) public synthToInverseSynth;
// The factor that will scale the utilisation ratio.
uint public utilisationMultiplier = 1e18;
// The maximum amount of debt in sUSD that can be issued by non snx collateral.
uint public maxDebt;
// The base interest rate applied to all borrows.
uint public baseBorrowRate;
// The base interest rate applied to all shorts.
uint public baseShortRate;
/* ---------- Address Resolver Configuration ---------- */
bytes32 private constant CONTRACT_ISSUER = "Issuer";
bytes32 private constant CONTRACT_EXRATES = "ExchangeRates";
bytes32[24] private addressesToCache = [CONTRACT_ISSUER, CONTRACT_EXRATES];
/* ========== CONSTRUCTOR ========== */
constructor(
CollateralManagerState _state,
address _owner,
address _resolver,
uint _maxDebt,
uint _baseBorrowRate,
uint _baseShortRate
) public Owned(_owner) Pausable() MixinResolver(_resolver) {
owner = msg.sender;
state = _state;
setMaxDebt(_maxDebt);
setBaseBorrowRate(_baseBorrowRate);
setBaseShortRate(_baseShortRate);
owner = _owner;
}
/* ========== VIEWS ========== */
function resolverAddressesRequired() public view returns (bytes32[] memory addresses) {
bytes32[] memory staticAddresses = new bytes32[](2);
staticAddresses[0] = CONTRACT_ISSUER;
staticAddresses[1] = CONTRACT_EXRATES;
// we want to cache the name of the synth and the name of its corresponding iSynth
bytes32[] memory shortAddresses;
uint length = _shortableSynths.elements.length;
if (length > 0) {
shortAddresses = new bytes32[](length * 2);
for (uint i = 0; i < length; i++) {
shortAddresses[i] = _shortableSynths.elements[i];
shortAddresses[i + length] = synthToInverseSynth[_shortableSynths.elements[i]];
}
}
bytes32[] memory synthAddresses = combineArrays(shortAddresses, _synths.elements);
if (synthAddresses.length > 0) {
addresses = combineArrays(synthAddresses, staticAddresses);
} else {
addresses = staticAddresses;
}
}
// helper function to check whether synth "by key" is a collateral issued by multi-collateral
function isSynthManaged(bytes32 currencyKey) external view returns (bool) {
return synthsByKey[currencyKey] != bytes32(0);
}
/* ---------- Related Contracts ---------- */
function _issuer() internal view returns (IIssuer) {
return IIssuer(requireAndGetAddress(CONTRACT_ISSUER));
}
function _exchangeRates() internal view returns (IExchangeRates) {
return IExchangeRates(requireAndGetAddress(CONTRACT_EXRATES));
}
function _synth(bytes32 synthName) internal view returns (ISynth) {
return ISynth(requireAndGetAddress(synthName));
}
/* ---------- Manager Information ---------- */
function hasCollateral(address collateral) public view returns (bool) {
return _collaterals.contains(collateral);
}
function hasAllCollaterals(address[] memory collaterals) public view returns (bool) {
for (uint i = 0; i < collaterals.length; i++) {
if (!hasCollateral(collaterals[i])) {
return false;
}
}
return true;
}
/* ---------- State Information ---------- */
function long(bytes32 synth) external view returns (uint amount) {
return state.long(synth);
}
function short(bytes32 synth) external view returns (uint amount) {
return state.short(synth);
}
function totalLong() public view returns (uint susdValue, bool anyRateIsInvalid) {
bytes32[] memory synths = _synths.elements;
if (synths.length > 0) {
for (uint i = 0; i < synths.length; i++) {
bytes32 synth = _synth(synths[i]).currencyKey();
if (synth == sUSD) {
susdValue = susdValue.add(state.long(synth));
} else {
(uint rate, bool invalid) = _exchangeRates().rateAndInvalid(synth);
uint amount = state.long(synth).multiplyDecimal(rate);
susdValue = susdValue.add(amount);
if (invalid) {
anyRateIsInvalid = true;
}
}
}
}
}
function totalShort() public view returns (uint susdValue, bool anyRateIsInvalid) {
bytes32[] memory synths = _shortableSynths.elements;
if (synths.length > 0) {
for (uint i = 0; i < synths.length; i++) {
bytes32 synth = _synth(synths[i]).currencyKey();
(uint rate, bool invalid) = _exchangeRates().rateAndInvalid(synth);
uint amount = state.short(synth).multiplyDecimal(rate);
susdValue = susdValue.add(amount);
if (invalid) {
anyRateIsInvalid = true;
}
}
}
}
function getBorrowRate() external view returns (uint borrowRate, bool anyRateIsInvalid) {
// get the snx backed debt.
uint snxDebt = _issuer().totalIssuedSynths(sUSD, true);
// now get the non snx backed debt.
(uint nonSnxDebt, bool ratesInvalid) = totalLong();
// the total.
uint totalDebt = snxDebt.add(nonSnxDebt);
// now work out the utilisation ratio, and divide through to get a per second value.
uint utilisation = nonSnxDebt.divideDecimal(totalDebt).divideDecimal(SECONDS_IN_A_YEAR);
// scale it by the utilisation multiplier.
uint scaledUtilisation = utilisation.multiplyDecimal(utilisationMultiplier);
// finally, add the base borrow rate.
borrowRate = scaledUtilisation.add(baseBorrowRate);
anyRateIsInvalid = ratesInvalid;
}
function getShortRate(bytes32 synth) external view returns (uint shortRate, bool rateIsInvalid) {
bytes32 synthKey = _synth(synth).currencyKey();
rateIsInvalid = _exchangeRates().rateIsInvalid(synthKey);
// get the spot supply of the synth, its iSynth
uint longSupply = IERC20(address(_synth(synth))).totalSupply();
uint inverseSupply = IERC20(address(_synth(synthToInverseSynth[synth]))).totalSupply();
// add the iSynth to supply properly reflect the market skew.
uint shortSupply = state.short(synthKey).add(inverseSupply);
// in this case, the market is skewed long so its free to short.
if (longSupply > shortSupply) {
return (0, rateIsInvalid);
}
// otherwise workout the skew towards the short side.
uint skew = shortSupply.sub(longSupply);
// divide through by the size of the market
uint proportionalSkew = skew.divideDecimal(longSupply.add(shortSupply)).divideDecimal(SECONDS_IN_A_YEAR);
// finally, add the base short rate.
shortRate = proportionalSkew.add(baseShortRate);
}
function getRatesAndTime(uint index)
external
view
returns (
uint entryRate,
uint lastRate,
uint lastUpdated,
uint newIndex
)
{
(entryRate, lastRate, lastUpdated, newIndex) = state.getRatesAndTime(index);
}
function getShortRatesAndTime(bytes32 currency, uint index)
external
view
returns (
uint entryRate,
uint lastRate,
uint lastUpdated,
uint newIndex
)
{
(entryRate, lastRate, lastUpdated, newIndex) = state.getShortRatesAndTime(currency, index);
}
function exceedsDebtLimit(uint amount, bytes32 currency) external view returns (bool canIssue, bool anyRateIsInvalid) {
uint usdAmount = _exchangeRates().effectiveValue(currency, amount, sUSD);
(uint longValue, bool longInvalid) = totalLong();
(uint shortValue, bool shortInvalid) = totalShort();
anyRateIsInvalid = longInvalid || shortInvalid;
return (longValue.add(shortValue).add(usdAmount) <= maxDebt, anyRateIsInvalid);
}
/* ========== MUTATIVE FUNCTIONS ========== */
/* ---------- SETTERS ---------- */
function setUtilisationMultiplier(uint _utilisationMultiplier) public onlyOwner {
require(_utilisationMultiplier > 0, "Must be greater than 0");
utilisationMultiplier = _utilisationMultiplier;
}
function setMaxDebt(uint _maxDebt) public onlyOwner {
require(_maxDebt > 0, "Must be greater than 0");
maxDebt = _maxDebt;
emit MaxDebtUpdated(maxDebt);
}
function setBaseBorrowRate(uint _baseBorrowRate) public onlyOwner {
baseBorrowRate = _baseBorrowRate;
emit BaseBorrowRateUpdated(baseBorrowRate);
}
function setBaseShortRate(uint _baseShortRate) public onlyOwner {
baseShortRate = _baseShortRate;
emit BaseShortRateUpdated(baseShortRate);
}
/* ---------- LOANS ---------- */
function getNewLoanId() external onlyCollateral returns (uint id) {
id = state.incrementTotalLoans();
}
/* ---------- MANAGER ---------- */
function addCollaterals(address[] calldata collaterals) external onlyOwner {
for (uint i = 0; i < collaterals.length; i++) {
if (!_collaterals.contains(collaterals[i])) {
_collaterals.add(collaterals[i]);
emit CollateralAdded(collaterals[i]);
}
}
}
function removeCollaterals(address[] calldata collaterals) external onlyOwner {
for (uint i = 0; i < collaterals.length; i++) {
if (_collaterals.contains(collaterals[i])) {
_collaterals.remove(collaterals[i]);
emit CollateralRemoved(collaterals[i]);
}
}
}
function addSynths(bytes32[] calldata synthNamesInResolver, bytes32[] calldata synthKeys) external onlyOwner {
for (uint i = 0; i < synthNamesInResolver.length; i++) {
if (!_synths.contains(synthNamesInResolver[i])) {
bytes32 synthName = synthNamesInResolver[i];
_synths.add(synthName);
synthsByKey[synthKeys[i]] = synthName;
emit SynthAdded(synthName);
}
}
}
function areSynthsAndCurrenciesSet(bytes32[] calldata requiredSynthNamesInResolver, bytes32[] calldata synthKeys)
external
view
returns (bool)
{
if (_synths.elements.length != requiredSynthNamesInResolver.length) {
return false;
}
for (uint i = 0; i < requiredSynthNamesInResolver.length; i++) {
if (!_synths.contains(requiredSynthNamesInResolver[i])) {
return false;
}
if (synthsByKey[synthKeys[i]] != requiredSynthNamesInResolver[i]) {
return false;
}
}
return true;
}
function removeSynths(bytes32[] calldata synths, bytes32[] calldata synthKeys) external onlyOwner {
for (uint i = 0; i < synths.length; i++) {
if (_synths.contains(synths[i])) {
// Remove it from the the address set lib.
_synths.remove(synths[i]);
delete synthsByKey[synthKeys[i]];
emit SynthRemoved(synths[i]);
}
}
}
// When we add a shortable synth, we need to know the iSynth as well
// This is so we can get the proper skew for the short rate.
function addShortableSynths(bytes32[2][] calldata requiredSynthAndInverseNamesInResolver, bytes32[] calldata synthKeys)
external
onlyOwner
{
require(requiredSynthAndInverseNamesInResolver.length == synthKeys.length, "Input array length mismatch");
for (uint i = 0; i < requiredSynthAndInverseNamesInResolver.length; i++) {
// setting these explicitly for clarity
// Each entry in the array is [Synth, iSynth]
bytes32 synth = requiredSynthAndInverseNamesInResolver[i][0];
bytes32 iSynth = requiredSynthAndInverseNamesInResolver[i][1];
if (!_shortableSynths.contains(synth)) {
// Add it to the address set lib.
_shortableSynths.add(synth);
// store the mapping to the iSynth so we can get its total supply for the borrow rate.
synthToInverseSynth[synth] = iSynth;
emit ShortableSynthAdded(synth);
// now the associated synth key to the CollateralManagerState
state.addShortCurrency(synthKeys[i]);
}
}
rebuildCache();
}
function areShortableSynthsSet(bytes32[] calldata requiredSynthNamesInResolver, bytes32[] calldata synthKeys)
external
view
returns (bool)
{
require(requiredSynthNamesInResolver.length == synthKeys.length, "Input array length mismatch");
if (_shortableSynths.elements.length != requiredSynthNamesInResolver.length) {
return false;
}
// first check contract state
for (uint i = 0; i < requiredSynthNamesInResolver.length; i++) {
bytes32 synthName = requiredSynthNamesInResolver[i];
if (!_shortableSynths.contains(synthName) || synthToInverseSynth[synthName] == bytes32(0)) {
return false;
}
}
// now check everything added to external state contract
for (uint i = 0; i < synthKeys.length; i++) {
if (state.getShortRatesLength(synthKeys[i]) == 0) {
return false;
}
}
return true;
}
function removeShortableSynths(bytes32[] calldata synths) external onlyOwner {
for (uint i = 0; i < synths.length; i++) {
if (_shortableSynths.contains(synths[i])) {
// Remove it from the the address set lib.
_shortableSynths.remove(synths[i]);
bytes32 synthKey = _synth(synths[i]).currencyKey();
state.removeShortCurrency(synthKey);
// remove the inverse mapping.
delete synthToInverseSynth[synths[i]];
emit ShortableSynthRemoved(synths[i]);
}
}
}
/* ---------- STATE MUTATIONS ---------- */
function updateBorrowRates(uint rate) external onlyCollateral {
state.updateBorrowRates(rate);
}
function updateShortRates(bytes32 currency, uint rate) external onlyCollateral {
state.updateShortRates(currency, rate);
}
function incrementLongs(bytes32 synth, uint amount) external onlyCollateral {
state.incrementLongs(synth, amount);
}
function decrementLongs(bytes32 synth, uint amount) external onlyCollateral {
state.decrementLongs(synth, amount);
}
function incrementShorts(bytes32 synth, uint amount) external onlyCollateral {
state.incrementShorts(synth, amount);
}
function decrementShorts(bytes32 synth, uint amount) external onlyCollateral {
state.decrementShorts(synth, amount);
}
/* ========== MODIFIERS ========== */
modifier onlyCollateral {
bool isMultiCollateral = hasCollateral(msg.sender);
require(isMultiCollateral, "Only collateral contracts");
_;
}
// ========== EVENTS ==========
event MaxDebtUpdated(uint maxDebt);
event LiquidationPenaltyUpdated(uint liquidationPenalty);
event BaseBorrowRateUpdated(uint baseBorrowRate);
event BaseShortRateUpdated(uint baseShortRate);
event CollateralAdded(address collateral);
event CollateralRemoved(address collateral);
event SynthAdded(bytes32 synth);
event SynthRemoved(bytes32 synth);
event ShortableSynthAdded(bytes32 synth);
event ShortableSynthRemoved(bytes32 synth);
}Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"contract CollateralManagerState","name":"_state","type":"address"},{"internalType":"address","name":"_owner","type":"address"},{"internalType":"address","name":"_resolver","type":"address"},{"internalType":"uint256","name":"_maxDebt","type":"uint256"},{"internalType":"uint256","name":"_baseBorrowRate","type":"uint256"},{"internalType":"uint256","name":"_baseShortRate","type":"uint256"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"baseBorrowRate","type":"uint256"}],"name":"BaseBorrowRateUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"baseShortRate","type":"uint256"}],"name":"BaseShortRateUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bytes32","name":"name","type":"bytes32"},{"indexed":false,"internalType":"address","name":"destination","type":"address"}],"name":"CacheUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"collateral","type":"address"}],"name":"CollateralAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"collateral","type":"address"}],"name":"CollateralRemoved","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"liquidationPenalty","type":"uint256"}],"name":"LiquidationPenaltyUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"maxDebt","type":"uint256"}],"name":"MaxDebtUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"oldOwner","type":"address"},{"indexed":false,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnerChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnerNominated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bool","name":"isPaused","type":"bool"}],"name":"PauseChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bytes32","name":"synth","type":"bytes32"}],"name":"ShortableSynthAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bytes32","name":"synth","type":"bytes32"}],"name":"ShortableSynthRemoved","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bytes32","name":"synth","type":"bytes32"}],"name":"SynthAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bytes32","name":"synth","type":"bytes32"}],"name":"SynthRemoved","type":"event"},{"constant":true,"inputs":[],"name":"CONTRACT_NAME","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"acceptOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address[]","name":"collaterals","type":"address[]"}],"name":"addCollaterals","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32[2][]","name":"requiredSynthAndInverseNamesInResolver","type":"bytes32[2][]"},{"internalType":"bytes32[]","name":"synthKeys","type":"bytes32[]"}],"name":"addShortableSynths","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32[]","name":"synthNamesInResolver","type":"bytes32[]"},{"internalType":"bytes32[]","name":"synthKeys","type":"bytes32[]"}],"name":"addSynths","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32[]","name":"requiredSynthNamesInResolver","type":"bytes32[]"},{"internalType":"bytes32[]","name":"synthKeys","type":"bytes32[]"}],"name":"areShortableSynthsSet","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32[]","name":"requiredSynthNamesInResolver","type":"bytes32[]"},{"internalType":"bytes32[]","name":"synthKeys","type":"bytes32[]"}],"name":"areSynthsAndCurrenciesSet","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"baseBorrowRate","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"baseShortRate","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"synth","type":"bytes32"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"decrementLongs","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"synth","type":"bytes32"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"decrementShorts","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bytes32","name":"currency","type":"bytes32"}],"name":"exceedsDebtLimit","outputs":[{"internalType":"bool","name":"canIssue","type":"bool"},{"internalType":"bool","name":"anyRateIsInvalid","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"getBorrowRate","outputs":[{"internalType":"uint256","name":"borrowRate","type":"uint256"},{"internalType":"bool","name":"anyRateIsInvalid","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"getNewLoanId","outputs":[{"internalType":"uint256","name":"id","type":"uint256"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"getRatesAndTime","outputs":[{"internalType":"uint256","name":"entryRate","type":"uint256"},{"internalType":"uint256","name":"lastRate","type":"uint256"},{"internalType":"uint256","name":"lastUpdated","type":"uint256"},{"internalType":"uint256","name":"newIndex","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"synth","type":"bytes32"}],"name":"getShortRate","outputs":[{"internalType":"uint256","name":"shortRate","type":"uint256"},{"internalType":"bool","name":"rateIsInvalid","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"currency","type":"bytes32"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"getShortRatesAndTime","outputs":[{"internalType":"uint256","name":"entryRate","type":"uint256"},{"internalType":"uint256","name":"lastRate","type":"uint256"},{"internalType":"uint256","name":"lastUpdated","type":"uint256"},{"internalType":"uint256","name":"newIndex","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address[]","name":"collaterals","type":"address[]"}],"name":"hasAllCollaterals","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"collateral","type":"address"}],"name":"hasCollateral","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"synth","type":"bytes32"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"incrementLongs","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"synth","type":"bytes32"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"incrementShorts","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"isResolverCached","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"currencyKey","type":"bytes32"}],"name":"isSynthManaged","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"lastPauseTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"synth","type":"bytes32"}],"name":"long","outputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"maxDebt","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_owner","type":"address"}],"name":"nominateNewOwner","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"nominatedOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"rebuildCache","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address[]","name":"collaterals","type":"address[]"}],"name":"removeCollaterals","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32[]","name":"synths","type":"bytes32[]"}],"name":"removeShortableSynths","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32[]","name":"synths","type":"bytes32[]"},{"internalType":"bytes32[]","name":"synthKeys","type":"bytes32[]"}],"name":"removeSynths","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"resolver","outputs":[{"internalType":"contract AddressResolver","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"resolverAddressesRequired","outputs":[{"internalType":"bytes32[]","name":"addresses","type":"bytes32[]"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"uint256","name":"_baseBorrowRate","type":"uint256"}],"name":"setBaseBorrowRate","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"uint256","name":"_baseShortRate","type":"uint256"}],"name":"setBaseShortRate","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"uint256","name":"_maxDebt","type":"uint256"}],"name":"setMaxDebt","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bool","name":"_paused","type":"bool"}],"name":"setPaused","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"uint256","name":"_utilisationMultiplier","type":"uint256"}],"name":"setUtilisationMultiplier","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"synth","type":"bytes32"}],"name":"short","outputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"state","outputs":[{"internalType":"contract CollateralManagerState","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"synthToInverseSynth","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"synthsByKey","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"totalLong","outputs":[{"internalType":"uint256","name":"susdValue","type":"uint256"},{"internalType":"bool","name":"anyRateIsInvalid","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"totalShort","outputs":[{"internalType":"uint256","name":"susdValue","type":"uint256"},{"internalType":"bool","name":"anyRateIsInvalid","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"uint256","name":"rate","type":"uint256"}],"name":"updateBorrowRates","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"bytes32","name":"currency","type":"bytes32"},{"internalType":"uint256","name":"rate","type":"uint256"}],"name":"updateShortRates","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"utilisationMultiplier","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"}]Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000573e5105c4b92416d1544a188f1bf77d442bb52d000000000000000000000000de910777c787903f78c89e7a0bf7f4c435cbb1fe0000000000000000000000004e3b31eb0e5cb73641ee1e65e7dcefe520ba3ef200000000000000000000000000000000000000000052b7d2dcc80cd2e4000000000000000000000000000000000000000000000000000000000000000971a92f000000000000000000000000000000000000000000000000000000000971a92f
-----Decoded View---------------
Arg [0] : _state (address): 0x573E5105c4B92416D1544A188F1bf77d442Bb52d
Arg [1] : _owner (address): 0xDe910777C787903F78C89e7a0bf7F4C435cBB1Fe
Arg [2] : _resolver (address): 0x4E3b31eB0E5CB73641EE1E65E7dCEFe520bA3ef2
Arg [3] : _maxDebt (uint256): 100000000000000000000000000
Arg [4] : _baseBorrowRate (uint256): 158443823
Arg [5] : _baseShortRate (uint256): 158443823
-----Encoded View---------------
6 Constructor Arguments found :
Arg [0] : 000000000000000000000000573e5105c4b92416d1544a188f1bf77d442bb52d
Arg [1] : 000000000000000000000000de910777c787903f78c89e7a0bf7f4c435cbb1fe
Arg [2] : 0000000000000000000000004e3b31eb0e5cb73641ee1e65e7dcefe520ba3ef2
Arg [3] : 00000000000000000000000000000000000000000052b7d2dcc80cd2e4000000
Arg [4] : 000000000000000000000000000000000000000000000000000000000971a92f
Arg [5] : 000000000000000000000000000000000000000000000000000000000971a92f
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Multichain Portfolio | 30 Chains
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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.