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Latest 25 from a total of 7,387 transactions
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Stake Rewards | 15247410 | 846 days ago | IN | 0 ETH | 0.00030752 | ||||
Stake Rewards | 15247283 | 846 days ago | IN | 0 ETH | 0.00030752 | ||||
Stake Rewards | 14816507 | 917 days ago | IN | 0 ETH | 0.00098614 | ||||
Stake Rewards | 14363782 | 988 days ago | IN | 0 ETH | 0.0013453 | ||||
Stake Rewards | 14145105 | 1022 days ago | IN | 0 ETH | 0.00387242 | ||||
Stake Rewards | 13833497 | 1070 days ago | IN | 0 ETH | 0.00305476 | ||||
Claim Rewards | 13776419 | 1079 days ago | IN | 0 ETH | 0.00469144 | ||||
Claim Rewards | 13717683 | 1088 days ago | IN | 0 ETH | 0.00739198 | ||||
Claim Rewards | 13717661 | 1088 days ago | IN | 0 ETH | 0.00778465 | ||||
Claim Rewards | 13717647 | 1088 days ago | IN | 0 ETH | 0.00728716 | ||||
Claim Rewards | 13717642 | 1088 days ago | IN | 0 ETH | 0.00564666 | ||||
Claim Rewards | 13717626 | 1088 days ago | IN | 0 ETH | 0.00619788 | ||||
Stake Rewards | 13663821 | 1097 days ago | IN | 0 ETH | 0.0157317 | ||||
Claim Rewards | 13619410 | 1104 days ago | IN | 0 ETH | 0.00642526 | ||||
Stake Rewards | 13615089 | 1105 days ago | IN | 0 ETH | 0.00481779 | ||||
Stake Rewards | 13614536 | 1105 days ago | IN | 0 ETH | 0.00488629 | ||||
Claim Rewards | 13614186 | 1105 days ago | IN | 0 ETH | 0.00382452 | ||||
Stake Rewards | 13614119 | 1105 days ago | IN | 0 ETH | 0.00377753 | ||||
Claim Rewards | 13614002 | 1105 days ago | IN | 0 ETH | 0.00614978 | ||||
Stake Rewards | 13613837 | 1105 days ago | IN | 0 ETH | 0.00328176 | ||||
Claim Rewards | 13613653 | 1105 days ago | IN | 0 ETH | 0.00375364 | ||||
Stake Rewards | 13613648 | 1105 days ago | IN | 0 ETH | 0.00336503 | ||||
Claim Rewards | 13613618 | 1105 days ago | IN | 0 ETH | 0.04929398 | ||||
Claim Rewards | 13613511 | 1105 days ago | IN | 0 ETH | 0.01508289 | ||||
Claim Rewards | 13613511 | 1105 days ago | IN | 0 ETH | 0.02658146 |
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Contract Name:
StakingRewards
Compiler Version
v0.6.12+commit.27d51765
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "@openzeppelin/contracts/access/AccessControl.sol"; import "@openzeppelin/contracts/math/Math.sol"; import "@openzeppelin/contracts/math/SafeMath.sol"; import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol"; import "@bancor/token-governance/contracts/ITokenGovernance.sol"; import "../utility/ContractRegistryClient.sol"; import "../utility/Utils.sol"; import "../utility/Time.sol"; import "../utility/interfaces/ICheckpointStore.sol"; import "../token/ReserveToken.sol"; import "../liquidity-protection/interfaces/ILiquidityProtection.sol"; import "./interfaces/IStakingRewards.sol"; /** * @dev This contract manages the distribution of the staking rewards */ contract StakingRewards is IStakingRewards, AccessControl, Time, Utils, ContractRegistryClient { using SafeMath for uint256; using ReserveToken for IReserveToken; using SafeERC20 for IERC20; using SafeERC20Ex for IERC20; // the role is used to globally govern the contract and its governing roles. bytes32 public constant ROLE_SUPERVISOR = keccak256("ROLE_SUPERVISOR"); // the roles is used to restrict who is allowed to publish liquidity protection events. bytes32 public constant ROLE_PUBLISHER = keccak256("ROLE_PUBLISHER"); // the roles is used to restrict who is allowed to update/cache provider rewards. bytes32 public constant ROLE_UPDATER = keccak256("ROLE_UPDATER"); // the weekly 25% increase of the rewards multiplier (in units of PPM). uint32 private constant MULTIPLIER_INCREMENT = PPM_RESOLUTION / 4; // the maximum weekly 200% rewards multiplier (in units of PPM). uint32 private constant MAX_MULTIPLIER = PPM_RESOLUTION + MULTIPLIER_INCREMENT * 4; // the rewards halving factor we need to take into account during the sanity verification process. uint8 private constant REWARDS_HALVING_FACTOR = 4; // since we will be dividing by the total amount of protected tokens in units of wei, we can encounter cases // where the total amount in the denominator is higher than the product of the rewards rate and staking duration. In // order to avoid this imprecision, we will amplify the reward rate by the units amount. uint256 private constant REWARD_RATE_FACTOR = 1e18; uint256 private constant MAX_UINT256 = uint256(-1); // the staking rewards settings. IStakingRewardsStore private immutable _store; // the permissioned wrapper around the network token which should allow this contract to mint staking rewards. ITokenGovernance private immutable _networkTokenGovernance; // the address of the network token. IERC20 private immutable _networkToken; // the checkpoint store recording last protected position removal times. ICheckpointStore private immutable _lastRemoveTimes; /** * @dev initializes a new StakingRewards contract */ constructor( IStakingRewardsStore store, ITokenGovernance networkTokenGovernance, ICheckpointStore lastRemoveTimes, IContractRegistry registry ) public validAddress(address(store)) validAddress(address(networkTokenGovernance)) validAddress(address(lastRemoveTimes)) ContractRegistryClient(registry) { _store = store; _networkTokenGovernance = networkTokenGovernance; _networkToken = networkTokenGovernance.token(); _lastRemoveTimes = lastRemoveTimes; // set up administrative roles. _setRoleAdmin(ROLE_SUPERVISOR, ROLE_SUPERVISOR); _setRoleAdmin(ROLE_PUBLISHER, ROLE_SUPERVISOR); _setRoleAdmin(ROLE_UPDATER, ROLE_SUPERVISOR); // allow the deployer to initially govern the contract. _setupRole(ROLE_SUPERVISOR, _msgSender()); } modifier onlyPublisher() { _onlyPublisher(); _; } function _onlyPublisher() internal view { require(hasRole(ROLE_PUBLISHER, msg.sender), "ERR_ACCESS_DENIED"); } modifier onlyUpdater() { _onlyUpdater(); _; } function _onlyUpdater() internal view { require(hasRole(ROLE_UPDATER, msg.sender), "ERR_ACCESS_DENIED"); } /** * @dev liquidity provision notification callback. The callback should be called *before* the liquidity is added in * the LP contract * * Requirements: * * - the caller must have the ROLE_PUBLISHER role */ function onAddingLiquidity( address provider, IConverterAnchor poolAnchor, IReserveToken reserveToken, uint256, /* poolAmount */ uint256 /* reserveAmount */ ) external override onlyPublisher validExternalAddress(provider) { IDSToken poolToken = IDSToken(address(poolAnchor)); PoolProgram memory program = _poolProgram(poolToken); if (program.startTime == 0) { return; } _updateRewards(provider, poolToken, reserveToken, program, _liquidityProtectionStats()); } /** * @dev liquidity removal callback. The callback must be called *before* the liquidity is removed in the LP * contract * * Requirements: * * - the caller must have the ROLE_PUBLISHER role */ function onRemovingLiquidity( uint256, /* id */ address provider, IConverterAnchor, /* poolAnchor */ IReserveToken, /* reserveToken */ uint256, /* poolAmount */ uint256 /* reserveAmount */ ) external override onlyPublisher validExternalAddress(provider) { ILiquidityProtectionStats lpStats = _liquidityProtectionStats(); // make sure that all pending rewards are properly stored for future claims, with retroactive rewards // multipliers. _storeRewards(provider, lpStats.providerPools(provider), lpStats); } /** * @dev returns the staking rewards store */ function store() external view override returns (IStakingRewardsStore) { return _store; } /** * @dev returns specific provider's pending rewards for all participating pools */ function pendingRewards(address provider) external view override returns (uint256) { return _pendingRewards(provider, _liquidityProtectionStats()); } /** * @dev returns specific provider's pending rewards for a specific participating pool */ function pendingPoolRewards(address provider, IDSToken poolToken) external view override returns (uint256) { return _pendingRewards(provider, poolToken, _liquidityProtectionStats()); } /** * @dev returns specific provider's pending rewards for a specific participating pool/reserve */ function pendingReserveRewards( address provider, IDSToken poolToken, IReserveToken reserveToken ) external view override returns (uint256) { PoolProgram memory program = _poolProgram(poolToken); return _pendingRewards(provider, poolToken, reserveToken, program, _liquidityProtectionStats()); } /** * @dev returns the current rewards multiplier for a provider in a given pool */ function rewardsMultiplier( address provider, IDSToken poolToken, IReserveToken reserveToken ) external view override returns (uint32) { ProviderRewards memory providerRewards = _providerRewards(provider, poolToken, reserveToken); PoolProgram memory program = _poolProgram(poolToken); return _rewardsMultiplier(provider, providerRewards.effectiveStakingTime, program); } /** * @dev returns specific provider's total claimed rewards from all participating pools */ function totalClaimedRewards(address provider) external view override returns (uint256) { uint256 totalRewards = 0; ILiquidityProtectionStats lpStats = _liquidityProtectionStats(); IDSToken[] memory poolTokens = lpStats.providerPools(provider); for (uint256 i = 0; i < poolTokens.length; ++i) { IDSToken poolToken = poolTokens[i]; PoolProgram memory program = _poolProgram(poolToken); for (uint256 j = 0; j < program.reserveTokens.length; ++j) { IReserveToken reserveToken = program.reserveTokens[j]; ProviderRewards memory providerRewards = _providerRewards(provider, poolToken, reserveToken); totalRewards = totalRewards.add(providerRewards.totalClaimedRewards); } } return totalRewards; } /** * @dev claims pending rewards from all participating pools */ function claimRewards() external override returns (uint256) { return _claimPendingRewards(msg.sender, _liquidityProtectionStats()); } /** * @dev stakes specific pending rewards from all participating pools */ function stakeRewards(uint256 maxAmount, IDSToken poolToken) external override returns (uint256, uint256) { return _stakeRewards(msg.sender, maxAmount, poolToken, _liquidityProtectionStats()); } /** * @dev store pending rewards for a list of providers in a specific pool for future claims * * Requirements: * * - the caller must have the ROLE_UPDATER role */ function storePoolRewards(address[] calldata providers, IDSToken poolToken) external override onlyUpdater { ILiquidityProtectionStats lpStats = _liquidityProtectionStats(); PoolProgram memory program = _poolProgram(poolToken); for (uint256 i = 0; i < providers.length; ++i) { for (uint256 j = 0; j < program.reserveTokens.length; ++j) { _storeRewards(providers[i], poolToken, program.reserveTokens[j], program, lpStats, false); } } } /** * @dev returns specific provider's pending rewards for all participating pools */ function _pendingRewards(address provider, ILiquidityProtectionStats lpStats) private view returns (uint256) { return _pendingRewards(provider, lpStats.providerPools(provider), lpStats); } /** * @dev returns specific provider's pending rewards for a specific list of participating pools */ function _pendingRewards( address provider, IDSToken[] memory poolTokens, ILiquidityProtectionStats lpStats ) private view returns (uint256) { uint256 reward = 0; uint256 length = poolTokens.length; for (uint256 i = 0; i < length; ++i) { uint256 poolReward = _pendingRewards(provider, poolTokens[i], lpStats); reward = reward.add(poolReward); } return reward; } /** * @dev returns specific provider's pending rewards for a specific pool */ function _pendingRewards( address provider, IDSToken poolToken, ILiquidityProtectionStats lpStats ) private view returns (uint256) { uint256 reward = 0; PoolProgram memory program = _poolProgram(poolToken); for (uint256 i = 0; i < program.reserveTokens.length; ++i) { uint256 reserveReward = _pendingRewards(provider, poolToken, program.reserveTokens[i], program, lpStats); reward = reward.add(reserveReward); } return reward; } /** * @dev returns specific provider's pending rewards for a specific pool/reserve */ function _pendingRewards( address provider, IDSToken poolToken, IReserveToken reserveToken, PoolProgram memory program, ILiquidityProtectionStats lpStats ) private view returns (uint256) { if (!_isProgramValid(reserveToken, program)) { return 0; } // calculate the new reward rate per-token PoolRewards memory poolRewardsData = _poolRewards(poolToken, reserveToken); // rewardPerToken must be calculated with the previous value of lastUpdateTime poolRewardsData.rewardPerToken = _rewardPerToken(poolToken, reserveToken, poolRewardsData, program, lpStats); poolRewardsData.lastUpdateTime = Math.min(_time(), program.endTime); // update provider's rewards with the newly claimable base rewards and the new reward rate per-token ProviderRewards memory providerRewards = _providerRewards(provider, poolToken, reserveToken); // if this is the first liquidity provision - set the effective staking time to the current time if ( providerRewards.effectiveStakingTime == 0 && lpStats.totalProviderAmount(provider, poolToken, reserveToken) == 0 ) { providerRewards.effectiveStakingTime = _time(); } // pendingBaseRewards must be calculated with the previous value of providerRewards.rewardPerToken providerRewards.pendingBaseRewards = providerRewards.pendingBaseRewards.add( _baseRewards(provider, poolToken, reserveToken, poolRewardsData, providerRewards, program, lpStats) ); providerRewards.rewardPerToken = poolRewardsData.rewardPerToken; // get full rewards and the respective rewards multiplier (uint256 fullReward, ) = _fullRewards(provider, poolToken, reserveToken, poolRewardsData, providerRewards, program, lpStats); return fullReward; } /** * @dev claims specific provider's pending rewards for a specific list of participating pools */ function _claimPendingRewards( address provider, IDSToken[] memory poolTokens, uint256 maxAmount, ILiquidityProtectionStats lpStats, bool resetStakingTime ) private returns (uint256) { uint256 reward = 0; uint256 length = poolTokens.length; for (uint256 i = 0; i < length && maxAmount > 0; ++i) { uint256 poolReward = _claimPendingRewards(provider, poolTokens[i], maxAmount, lpStats, resetStakingTime); reward = reward.add(poolReward); if (maxAmount != MAX_UINT256) { maxAmount = maxAmount.sub(poolReward); } } return reward; } /** * @dev claims specific provider's pending rewards for a specific pool */ function _claimPendingRewards( address provider, IDSToken poolToken, uint256 maxAmount, ILiquidityProtectionStats lpStats, bool resetStakingTime ) private returns (uint256) { uint256 reward = 0; PoolProgram memory program = _poolProgram(poolToken); for (uint256 i = 0; i < program.reserveTokens.length && maxAmount > 0; ++i) { uint256 reserveReward = _claimPendingRewards( provider, poolToken, program.reserveTokens[i], program, maxAmount, lpStats, resetStakingTime ); reward = reward.add(reserveReward); if (maxAmount != MAX_UINT256) { maxAmount = maxAmount.sub(reserveReward); } } return reward; } /** * @dev claims specific provider's pending rewards for a specific pool/reserve */ function _claimPendingRewards( address provider, IDSToken poolToken, IReserveToken reserveToken, PoolProgram memory program, uint256 maxAmount, ILiquidityProtectionStats lpStats, bool resetStakingTime ) private returns (uint256) { // update all provider's pending rewards, in order to apply retroactive reward multipliers (PoolRewards memory poolRewardsData, ProviderRewards memory providerRewards) = _updateRewards(provider, poolToken, reserveToken, program, lpStats); // get full rewards and the respective rewards multiplier (uint256 fullReward, uint32 multiplier) = _fullRewards(provider, poolToken, reserveToken, poolRewardsData, providerRewards, program, lpStats); // mark any debt as repaid. providerRewards.baseRewardsDebt = 0; providerRewards.baseRewardsDebtMultiplier = 0; if (maxAmount != MAX_UINT256 && fullReward > maxAmount) { // get the amount of the actual base rewards that were claimed providerRewards.baseRewardsDebt = _removeMultiplier(fullReward.sub(maxAmount), multiplier); // store the current multiplier for future retroactive rewards correction providerRewards.baseRewardsDebtMultiplier = multiplier; // grant only maxAmount rewards fullReward = maxAmount; } // update pool rewards data total claimed rewards _store.updatePoolRewardsData( poolToken, reserveToken, poolRewardsData.lastUpdateTime, poolRewardsData.rewardPerToken, poolRewardsData.totalClaimedRewards.add(fullReward) ); // update provider rewards data with the remaining pending rewards and if needed, set the effective // staking time to the timestamp of the current block _store.updateProviderRewardsData( provider, poolToken, reserveToken, providerRewards.rewardPerToken, 0, providerRewards.totalClaimedRewards.add(fullReward), resetStakingTime ? _time() : providerRewards.effectiveStakingTime, providerRewards.baseRewardsDebt, providerRewards.baseRewardsDebtMultiplier ); return fullReward; } /** * @dev claims specific provider's pending rewards from all participating pools */ function _claimPendingRewards(address provider, ILiquidityProtectionStats lpStats) private returns (uint256) { return _claimPendingRewards(provider, lpStats.providerPools(provider), MAX_UINT256, lpStats); } /** * @dev claims specific provider's pending rewards for a specific list of participating pools */ function _claimPendingRewards( address provider, IDSToken[] memory poolTokens, uint256 maxAmount, ILiquidityProtectionStats lpStats ) private returns (uint256) { uint256 amount = _claimPendingRewards(provider, poolTokens, maxAmount, lpStats, true); if (amount == 0) { return amount; } // make sure to update the last claim time so that it'll be taken into effect when calculating the next rewards // multiplier _store.updateProviderLastClaimTime(provider); // mint the reward tokens directly to the provider _networkTokenGovernance.mint(provider, amount); emit RewardsClaimed(provider, amount); return amount; } /** * @dev stakes specific provider's pending rewards from all participating pools */ function _stakeRewards( address provider, uint256 maxAmount, IDSToken poolToken, ILiquidityProtectionStats lpStats ) private returns (uint256, uint256) { return _stakeRewards(provider, lpStats.providerPools(provider), maxAmount, poolToken, lpStats); } /** * @dev claims and stakes specific provider's pending rewards for a specific list of participating pools */ function _stakeRewards( address provider, IDSToken[] memory poolTokens, uint256 maxAmount, IDSToken newPoolToken, ILiquidityProtectionStats lpStats ) private returns (uint256, uint256) { uint256 amount = _claimPendingRewards(provider, poolTokens, maxAmount, lpStats, false); if (amount == 0) { return (amount, 0); } // approve the LiquidityProtection contract to pull the rewards ILiquidityProtection liquidityProtection = _liquidityProtection(); address liquidityProtectionAddress = address(liquidityProtection); _networkToken.ensureApprove(liquidityProtectionAddress, amount); // mint the reward tokens directly to the staking contract, so that the LiquidityProtection could pull the // rewards and attribute them to the provider _networkTokenGovernance.mint(address(this), amount); uint256 newId = liquidityProtection.addLiquidityFor(provider, newPoolToken, IReserveToken(address(_networkToken)), amount); // please note, that in order to incentivize staking, we won't be updating the time of the last claim, thus // preserving the rewards bonus multiplier emit RewardsStaked(provider, newPoolToken, amount, newId); return (amount, newId); } /** * @dev store specific provider's pending rewards for future claims */ function _storeRewards( address provider, IDSToken[] memory poolTokens, ILiquidityProtectionStats lpStats ) private { for (uint256 i = 0; i < poolTokens.length; ++i) { IDSToken poolToken = poolTokens[i]; PoolProgram memory program = _poolProgram(poolToken); for (uint256 j = 0; j < program.reserveTokens.length; ++j) { _storeRewards(provider, poolToken, program.reserveTokens[j], program, lpStats, true); } } } /** * @dev store specific provider's pending rewards for future claims */ function _storeRewards( address provider, IDSToken poolToken, IReserveToken reserveToken, PoolProgram memory program, ILiquidityProtectionStats lpStats, bool resetStakingTime ) private { if (!_isProgramValid(reserveToken, program)) { return; } // update all provider's pending rewards, in order to apply retroactive reward multipliers (PoolRewards memory poolRewardsData, ProviderRewards memory providerRewards) = _updateRewards(provider, poolToken, reserveToken, program, lpStats); // get full rewards and the respective rewards multiplier (uint256 fullReward, uint32 multiplier) = _fullRewards(provider, poolToken, reserveToken, poolRewardsData, providerRewards, program, lpStats); // get the amount of the actual base rewards that were claimed providerRewards.baseRewardsDebt = _removeMultiplier(fullReward, multiplier); // update store data with the store pending rewards and set the last update time to the timestamp of the // current block. if we're resetting the effective staking time, then we'd have to store the rewards multiplier in order to // account for it in the future. Otherwise, we must store base rewards without any rewards multiplier _store.updateProviderRewardsData( provider, poolToken, reserveToken, providerRewards.rewardPerToken, 0, providerRewards.totalClaimedRewards, resetStakingTime ? _time() : providerRewards.effectiveStakingTime, providerRewards.baseRewardsDebt, resetStakingTime ? multiplier : PPM_RESOLUTION ); } /** * @dev updates pool rewards */ function _updateReserveRewards( IDSToken poolToken, IReserveToken reserveToken, PoolProgram memory program, ILiquidityProtectionStats lpStats ) private returns (PoolRewards memory) { // calculate the new reward rate per-token and update it in the store PoolRewards memory poolRewardsData = _poolRewards(poolToken, reserveToken); bool update = false; // rewardPerToken must be calculated with the previous value of lastUpdateTime uint256 newRewardPerToken = _rewardPerToken(poolToken, reserveToken, poolRewardsData, program, lpStats); if (poolRewardsData.rewardPerToken != newRewardPerToken) { poolRewardsData.rewardPerToken = newRewardPerToken; update = true; } uint256 newLastUpdateTime = Math.min(_time(), program.endTime); if (poolRewardsData.lastUpdateTime != newLastUpdateTime) { poolRewardsData.lastUpdateTime = newLastUpdateTime; update = true; } if (update) { _store.updatePoolRewardsData( poolToken, reserveToken, poolRewardsData.lastUpdateTime, poolRewardsData.rewardPerToken, poolRewardsData.totalClaimedRewards ); } return poolRewardsData; } /** * @dev updates provider rewards. this function is called during every liquidity changes */ function _updateProviderRewards( address provider, IDSToken poolToken, IReserveToken reserveToken, PoolRewards memory poolRewardsData, PoolProgram memory program, ILiquidityProtectionStats lpStats ) private returns (ProviderRewards memory) { // update provider's rewards with the newly claimable base rewards and the new reward rate per-token ProviderRewards memory providerRewards = _providerRewards(provider, poolToken, reserveToken); bool update = false; // if this is the first liquidity provision - set the effective staking time to the current time if ( providerRewards.effectiveStakingTime == 0 && lpStats.totalProviderAmount(provider, poolToken, reserveToken) == 0 ) { providerRewards.effectiveStakingTime = _time(); update = true; } // pendingBaseRewards must be calculated with the previous value of providerRewards.rewardPerToken uint256 rewards = _baseRewards(provider, poolToken, reserveToken, poolRewardsData, providerRewards, program, lpStats); if (rewards != 0) { providerRewards.pendingBaseRewards = providerRewards.pendingBaseRewards.add(rewards); update = true; } if (providerRewards.rewardPerToken != poolRewardsData.rewardPerToken) { providerRewards.rewardPerToken = poolRewardsData.rewardPerToken; update = true; } if (update) { _store.updateProviderRewardsData( provider, poolToken, reserveToken, providerRewards.rewardPerToken, providerRewards.pendingBaseRewards, providerRewards.totalClaimedRewards, providerRewards.effectiveStakingTime, providerRewards.baseRewardsDebt, providerRewards.baseRewardsDebtMultiplier ); } return providerRewards; } /** * @dev updates pool and provider rewards. this function is called during every liquidity changes */ function _updateRewards( address provider, IDSToken poolToken, IReserveToken reserveToken, PoolProgram memory program, ILiquidityProtectionStats lpStats ) private returns (PoolRewards memory, ProviderRewards memory) { PoolRewards memory poolRewardsData = _updateReserveRewards(poolToken, reserveToken, program, lpStats); ProviderRewards memory providerRewards = _updateProviderRewards(provider, poolToken, reserveToken, poolRewardsData, program, lpStats); return (poolRewardsData, providerRewards); } /** * @dev returns the aggregated reward rate per-token */ function _rewardPerToken( IDSToken poolToken, IReserveToken reserveToken, PoolRewards memory poolRewardsData, PoolProgram memory program, ILiquidityProtectionStats lpStats ) private view returns (uint256) { // if there is no longer any liquidity in this reserve, return the historic rate (i.e., rewards won't accrue) uint256 totalReserveAmount = lpStats.totalReserveAmount(poolToken, reserveToken); if (totalReserveAmount == 0) { return poolRewardsData.rewardPerToken; } // don't grant any rewards before the starting time of the program uint256 currentTime = _time(); if (currentTime < program.startTime) { return 0; } uint256 stakingEndTime = Math.min(currentTime, program.endTime); uint256 stakingStartTime = Math.max(program.startTime, poolRewardsData.lastUpdateTime); if (stakingStartTime == stakingEndTime) { return poolRewardsData.rewardPerToken; } // since we will be dividing by the total amount of protected tokens in units of wei, we can encounter cases // where the total amount in the denominator is higher than the product of the rewards rate and staking duration. // in order to avoid this imprecision, we will amplify the reward rate by the units amount return poolRewardsData.rewardPerToken.add( // the aggregated reward rate stakingEndTime .sub(stakingStartTime) // the duration of the staking .mul(program.rewardRate) // multiplied by the rate .mul(REWARD_RATE_FACTOR) // and factored to increase precision .mul(_rewardShare(reserveToken, program)) // and applied the specific token share of the whole reward .div(totalReserveAmount.mul(PPM_RESOLUTION)) // and divided by the total protected tokens amount in the pool ); } /** * @dev returns the base rewards since the last claim */ function _baseRewards( address provider, IDSToken poolToken, IReserveToken reserveToken, PoolRewards memory poolRewardsData, ProviderRewards memory providerRewards, PoolProgram memory program, ILiquidityProtectionStats lpStats ) private view returns (uint256) { uint256 totalProviderAmount = lpStats.totalProviderAmount(provider, poolToken, reserveToken); uint256 newRewardPerToken = _rewardPerToken(poolToken, reserveToken, poolRewardsData, program, lpStats); return totalProviderAmount // the protected tokens amount held by the provider .mul(newRewardPerToken.sub(providerRewards.rewardPerToken)) // multiplied by the difference between the previous and the current rate .div(REWARD_RATE_FACTOR); // and factored back } /** * @dev returns the full rewards since the last claim */ function _fullRewards( address provider, IDSToken poolToken, IReserveToken reserveToken, PoolRewards memory poolRewardsData, ProviderRewards memory providerRewards, PoolProgram memory program, ILiquidityProtectionStats lpStats ) private view returns (uint256, uint32) { // calculate the claimable base rewards (since the last claim) uint256 newBaseRewards = _baseRewards(provider, poolToken, reserveToken, poolRewardsData, providerRewards, program, lpStats); // make sure that we aren't exceeding the reward rate for any reason _verifyBaseReward(newBaseRewards, providerRewards.effectiveStakingTime, reserveToken, program); // calculate pending rewards and apply the rewards multiplier uint32 multiplier = _rewardsMultiplier(provider, providerRewards.effectiveStakingTime, program); uint256 fullReward = _applyMultiplier(providerRewards.pendingBaseRewards.add(newBaseRewards), multiplier); // add any debt, while applying the best retroactive multiplier fullReward = fullReward.add( _applyHigherMultiplier( providerRewards.baseRewardsDebt, multiplier, providerRewards.baseRewardsDebtMultiplier ) ); // make sure that we aren't exceeding the full reward rate for any reason _verifyFullReward(fullReward, reserveToken, poolRewardsData, program); return (fullReward, multiplier); } /** * @dev returns the specific reserve token's share of all rewards */ function _rewardShare(IReserveToken reserveToken, PoolProgram memory program) private pure returns (uint32) { if (reserveToken == program.reserveTokens[0]) { return program.rewardShares[0]; } return program.rewardShares[1]; } /** * @dev returns the rewards multiplier for the specific provider */ function _rewardsMultiplier( address provider, uint256 stakingStartTime, PoolProgram memory program ) private view returns (uint32) { uint256 effectiveStakingEndTime = Math.min(_time(), program.endTime); uint256 effectiveStakingStartTime = Math.max( // take the latest of actual staking start time and the latest multiplier reset Math.max(stakingStartTime, program.startTime), // don't count staking before the start of the program Math.max(_lastRemoveTimes.checkpoint(provider), _store.providerLastClaimTime(provider)) // get the latest multiplier reset timestamp ); // check that the staking range is valid. for example, it can be invalid when calculating the multiplier when // the staking has started before the start of the program, in which case the effective staking start time will // be in the future, compared to the effective staking end time (which will be the time of the current block) if (effectiveStakingStartTime >= effectiveStakingEndTime) { return PPM_RESOLUTION; } uint256 effectiveStakingDuration = effectiveStakingEndTime.sub(effectiveStakingStartTime); // given x representing the staking duration (in seconds), the resulting multiplier (in PPM) is: // * for 0 <= x <= 1 weeks: 100% PPM // * for 1 <= x <= 2 weeks: 125% PPM // * for 2 <= x <= 3 weeks: 150% PPM // * for 3 <= x <= 4 weeks: 175% PPM // * for x > 4 weeks: 200% PPM return PPM_RESOLUTION + MULTIPLIER_INCREMENT * uint32(Math.min(effectiveStakingDuration.div(1 weeks), 4)); } /** * @dev returns the pool program for a specific pool */ function _poolProgram(IDSToken poolToken) private view returns (PoolProgram memory) { PoolProgram memory program; (program.startTime, program.endTime, program.rewardRate, program.reserveTokens, program.rewardShares) = _store .poolProgram(poolToken); return program; } /** * @dev returns pool rewards for a specific pool and reserve */ function _poolRewards(IDSToken poolToken, IReserveToken reserveToken) private view returns (PoolRewards memory) { PoolRewards memory data; (data.lastUpdateTime, data.rewardPerToken, data.totalClaimedRewards) = _store.poolRewards( poolToken, reserveToken ); return data; } /** * @dev returns provider rewards for a specific pool and reserve */ function _providerRewards( address provider, IDSToken poolToken, IReserveToken reserveToken ) private view returns (ProviderRewards memory) { ProviderRewards memory data; ( data.rewardPerToken, data.pendingBaseRewards, data.totalClaimedRewards, data.effectiveStakingTime, data.baseRewardsDebt, data.baseRewardsDebtMultiplier ) = _store.providerRewards(provider, poolToken, reserveToken); return data; } /** * @dev applies the multiplier on the provided amount */ function _applyMultiplier(uint256 amount, uint32 multiplier) private pure returns (uint256) { if (multiplier == PPM_RESOLUTION) { return amount; } return amount.mul(multiplier).div(PPM_RESOLUTION); } /** * @dev removes the multiplier on the provided amount */ function _removeMultiplier(uint256 amount, uint32 multiplier) private pure returns (uint256) { if (multiplier == PPM_RESOLUTION) { return amount; } return amount.mul(PPM_RESOLUTION).div(multiplier); } /** * @dev applies the best of two rewards multipliers on the provided amount */ function _applyHigherMultiplier( uint256 amount, uint32 multiplier1, uint32 multiplier2 ) private pure returns (uint256) { return _applyMultiplier(amount, multiplier1 > multiplier2 ? multiplier1 : multiplier2); } /** * @dev performs a sanity check on the newly claimable base rewards */ function _verifyBaseReward( uint256 baseReward, uint256 stakingStartTime, IReserveToken reserveToken, PoolProgram memory program ) private view { // don't grant any rewards before the starting time of the program or for stakes after the end of the program uint256 currentTime = _time(); if (currentTime < program.startTime || stakingStartTime >= program.endTime) { require(baseReward == 0, "ERR_BASE_REWARD_TOO_HIGH"); return; } uint256 effectiveStakingStartTime = Math.max(stakingStartTime, program.startTime); uint256 effectiveStakingEndTime = Math.min(currentTime, program.endTime); // make sure that we aren't exceeding the base reward rate for any reason require( baseReward <= (program.rewardRate * REWARDS_HALVING_FACTOR) .mul(effectiveStakingEndTime.sub(effectiveStakingStartTime)) .mul(_rewardShare(reserveToken, program)) .div(PPM_RESOLUTION), "ERR_BASE_REWARD_RATE_TOO_HIGH" ); } /** * @dev performs a sanity check on the newly claimable full rewards */ function _verifyFullReward( uint256 fullReward, IReserveToken reserveToken, PoolRewards memory poolRewardsData, PoolProgram memory program ) private pure { uint256 maxClaimableReward = ( (program.rewardRate * REWARDS_HALVING_FACTOR) .mul(program.endTime.sub(program.startTime)) .mul(_rewardShare(reserveToken, program)) .mul(MAX_MULTIPLIER) .div(PPM_RESOLUTION) .div(PPM_RESOLUTION) ) .sub(poolRewardsData.totalClaimedRewards); // make sure that we aren't exceeding the full reward rate for any reason require(fullReward <= maxClaimableReward, "ERR_REWARD_RATE_TOO_HIGH"); } /** * @dev returns the liquidity protection stats data contract */ function _liquidityProtectionStats() private view returns (ILiquidityProtectionStats) { return _liquidityProtection().stats(); } /** * @dev returns the liquidity protection contract */ function _liquidityProtection() private view returns (ILiquidityProtection) { return ILiquidityProtection(_addressOf(LIQUIDITY_PROTECTION)); } /** * @dev returns if the program is valid */ function _isProgramValid(IReserveToken reserveToken, PoolProgram memory program) private pure returns (bool) { return address(reserveToken) != address(0) && (program.reserveTokens[0] == reserveToken || program.reserveTokens[1] == reserveToken); } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../utils/EnumerableSet.sol"; import "../utils/Address.sol"; import "../utils/Context.sol"; /** * @dev Contract module that allows children to implement role-based access * control mechanisms. * * Roles are referred to by their `bytes32` identifier. These should be exposed * in the external API and be unique. The best way to achieve this is by * using `public constant` hash digests: * * ``` * bytes32 public constant MY_ROLE = keccak256("MY_ROLE"); * ``` * * Roles can be used to represent a set of permissions. To restrict access to a * function call, use {hasRole}: * * ``` * function foo() public { * require(hasRole(MY_ROLE, msg.sender)); * ... * } * ``` * * Roles can be granted and revoked dynamically via the {grantRole} and * {revokeRole} functions. Each role has an associated admin role, and only * accounts that have a role's admin role can call {grantRole} and {revokeRole}. * * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means * that only accounts with this role will be able to grant or revoke other * roles. More complex role relationships can be created by using * {_setRoleAdmin}. * * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to * grant and revoke this role. Extra precautions should be taken to secure * accounts that have been granted it. */ abstract contract AccessControl is Context { using EnumerableSet for EnumerableSet.AddressSet; using Address for address; struct RoleData { EnumerableSet.AddressSet members; bytes32 adminRole; } mapping (bytes32 => RoleData) private _roles; bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00; /** * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole` * * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite * {RoleAdminChanged} not being emitted signaling this. * * _Available since v3.1._ */ event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole); /** * @dev Emitted when `account` is granted `role`. * * `sender` is the account that originated the contract call, an admin role * bearer except when using {_setupRole}. */ event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Emitted when `account` is revoked `role`. * * `sender` is the account that originated the contract call: * - if using `revokeRole`, it is the admin role bearer * - if using `renounceRole`, it is the role bearer (i.e. `account`) */ event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) public view returns (bool) { return _roles[role].members.contains(account); } /** * @dev Returns the number of accounts that have `role`. Can be used * together with {getRoleMember} to enumerate all bearers of a role. */ function getRoleMemberCount(bytes32 role) public view returns (uint256) { return _roles[role].members.length(); } /** * @dev Returns one of the accounts that have `role`. `index` must be a * value between 0 and {getRoleMemberCount}, non-inclusive. * * Role bearers are not sorted in any particular way, and their ordering may * change at any point. * * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure * you perform all queries on the same block. See the following * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post] * for more information. */ function getRoleMember(bytes32 role, uint256 index) public view returns (address) { return _roles[role].members.at(index); } /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) public view returns (bytes32) { return _roles[role].adminRole; } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function grantRole(bytes32 role, address account) public virtual { require(hasRole(_roles[role].adminRole, _msgSender()), "AccessControl: sender must be an admin to grant"); _grantRole(role, account); } /** * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function revokeRole(bytes32 role, address account) public virtual { require(hasRole(_roles[role].adminRole, _msgSender()), "AccessControl: sender must be an admin to revoke"); _revokeRole(role, account); } /** * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been granted `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. */ function renounceRole(bytes32 role, address account) public virtual { require(account == _msgSender(), "AccessControl: can only renounce roles for self"); _revokeRole(role, account); } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. Note that unlike {grantRole}, this function doesn't perform any * checks on the calling account. * * [WARNING] * ==== * This function should only be called from the constructor when setting * up the initial roles for the system. * * Using this function in any other way is effectively circumventing the admin * system imposed by {AccessControl}. * ==== */ function _setupRole(bytes32 role, address account) internal virtual { _grantRole(role, account); } /** * @dev Sets `adminRole` as ``role``'s admin role. * * Emits a {RoleAdminChanged} event. */ function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual { emit RoleAdminChanged(role, _roles[role].adminRole, adminRole); _roles[role].adminRole = adminRole; } function _grantRole(bytes32 role, address account) private { if (_roles[role].members.add(account)) { emit RoleGranted(role, account, _msgSender()); } } function _revokeRole(bytes32 role, address account) private { if (_roles[role].members.remove(account)) { emit RoleRevoked(role, account, _msgSender()); } } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a >= b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow, so we distribute return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2); } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @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, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } /** * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b > a) return (false, 0); return (true, a - b); } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, 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-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a / b); } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a % b); } /** * @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"); return a - b; } /** * @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) { 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, reverting 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) { require(b > 0, "SafeMath: division by zero"); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting 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; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); return a - b; } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryDiv}. * * 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, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * 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, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a % b; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "./IERC20.sol"; import "../../math/SafeMath.sol"; import "../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "./IMintableToken.sol"; /// @title The interface for mintable/burnable token governance. interface ITokenGovernance { // The address of the mintable ERC20 token. function token() external view returns (IMintableToken); /// @dev Mints new tokens. /// /// @param to Account to receive the new amount. /// @param amount Amount to increase the supply by. /// function mint(address to, uint256 amount) external; /// @dev Burns tokens from the caller. /// /// @param amount Amount to decrease the supply by. /// function burn(uint256 amount) external; }
// SPDX-License-Identifier: SEE LICENSE IN LICENSE pragma solidity 0.6.12; import "./Owned.sol"; import "./Utils.sol"; import "./interfaces/IContractRegistry.sol"; /** * @dev This is the base contract for ContractRegistry clients. */ contract ContractRegistryClient is Owned, Utils { bytes32 internal constant CONTRACT_REGISTRY = "ContractRegistry"; bytes32 internal constant BANCOR_NETWORK = "BancorNetwork"; bytes32 internal constant CONVERTER_FACTORY = "ConverterFactory"; bytes32 internal constant CONVERSION_PATH_FINDER = "ConversionPathFinder"; bytes32 internal constant CONVERTER_UPGRADER = "BancorConverterUpgrader"; bytes32 internal constant CONVERTER_REGISTRY = "BancorConverterRegistry"; bytes32 internal constant CONVERTER_REGISTRY_DATA = "BancorConverterRegistryData"; bytes32 internal constant BNT_TOKEN = "BNTToken"; bytes32 internal constant BANCOR_X = "BancorX"; bytes32 internal constant BANCOR_X_UPGRADER = "BancorXUpgrader"; bytes32 internal constant LIQUIDITY_PROTECTION = "LiquidityProtection"; bytes32 internal constant NETWORK_SETTINGS = "NetworkSettings"; // address of the current contract registry IContractRegistry private _registry; // address of the previous contract registry IContractRegistry private _prevRegistry; // only the owner can update the contract registry bool private _onlyOwnerCanUpdateRegistry; /** * @dev verifies that the caller is mapped to the given contract name */ modifier only(bytes32 contractName) { _only(contractName); _; } // error message binary size optimization function _only(bytes32 contractName) internal view { require(msg.sender == _addressOf(contractName), "ERR_ACCESS_DENIED"); } /** * @dev initializes a new ContractRegistryClient instance */ constructor(IContractRegistry initialRegistry) internal validAddress(address(initialRegistry)) { _registry = IContractRegistry(initialRegistry); _prevRegistry = IContractRegistry(initialRegistry); } /** * @dev updates to the new contract registry */ function updateRegistry() external { // verify that this function is permitted require(msg.sender == owner() || !_onlyOwnerCanUpdateRegistry, "ERR_ACCESS_DENIED"); // get the new contract registry IContractRegistry newRegistry = IContractRegistry(_addressOf(CONTRACT_REGISTRY)); // verify that the new contract registry is different and not zero require(newRegistry != _registry && address(newRegistry) != address(0), "ERR_INVALID_REGISTRY"); // verify that the new contract registry is pointing to a non-zero contract registry require(newRegistry.addressOf(CONTRACT_REGISTRY) != address(0), "ERR_INVALID_REGISTRY"); // save a backup of the current contract registry before replacing it _prevRegistry = _registry; // replace the current contract registry with the new contract registry _registry = newRegistry; } /** * @dev restores the previous contract registry */ function restoreRegistry() external ownerOnly { // restore the previous contract registry _registry = _prevRegistry; } /** * @dev restricts the permission to update the contract registry */ function restrictRegistryUpdate(bool restrictOwnerOnly) public ownerOnly { // change the permission to update the contract registry _onlyOwnerCanUpdateRegistry = restrictOwnerOnly; } /** * @dev returns the address of the current contract registry */ function registry() public view returns (IContractRegistry) { return _registry; } /** * @dev returns the address of the previous contract registry */ function prevRegistry() external view returns (IContractRegistry) { return _prevRegistry; } /** * @dev returns whether only the owner can update the contract registry */ function onlyOwnerCanUpdateRegistry() external view returns (bool) { return _onlyOwnerCanUpdateRegistry; } /** * @dev returns the address associated with the given contract name */ function _addressOf(bytes32 contractName) internal view returns (address) { return _registry.addressOf(contractName); } }
// SPDX-License-Identifier: SEE LICENSE IN LICENSE pragma solidity 0.6.12; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; /** * @dev Utilities & Common Modifiers */ contract Utils { uint32 internal constant PPM_RESOLUTION = 1000000; // verifies that a value is greater than zero modifier greaterThanZero(uint256 value) { _greaterThanZero(value); _; } // error message binary size optimization function _greaterThanZero(uint256 value) internal pure { require(value > 0, "ERR_ZERO_VALUE"); } // validates an address - currently only checks that it isn't null modifier validAddress(address addr) { _validAddress(addr); _; } // error message binary size optimization function _validAddress(address addr) internal pure { require(addr != address(0), "ERR_INVALID_ADDRESS"); } // ensures that the portion is valid modifier validPortion(uint32 _portion) { _validPortion(_portion); _; } // error message binary size optimization function _validPortion(uint32 _portion) internal pure { require(_portion > 0 && _portion <= PPM_RESOLUTION, "ERR_INVALID_PORTION"); } // validates an external address - currently only checks that it isn't null or this modifier validExternalAddress(address addr) { _validExternalAddress(addr); _; } // error message binary size optimization function _validExternalAddress(address addr) internal view { require(addr != address(0) && addr != address(this), "ERR_INVALID_EXTERNAL_ADDRESS"); } // ensures that the fee is valid modifier validFee(uint32 fee) { _validFee(fee); _; } // error message binary size optimization function _validFee(uint32 fee) internal pure { require(fee <= PPM_RESOLUTION, "ERR_INVALID_FEE"); } }
// SPDX-License-Identifier: SEE LICENSE IN LICENSE pragma solidity 0.6.12; /* Time implementing contract */ contract Time { /** * @dev returns the current time */ function _time() internal view virtual returns (uint256) { return block.timestamp; } }
// SPDX-License-Identifier: SEE LICENSE IN LICENSE pragma solidity 0.6.12; /** * @dev Checkpoint store contract interface */ interface ICheckpointStore { function addCheckpoint(address target) external; function addPastCheckpoint(address target, uint256 timestamp) external; function addPastCheckpoints(address[] calldata targets, uint256[] calldata timestamps) external; function checkpoint(address target) external view returns (uint256); }
// SPDX-License-Identifier: SEE LICENSE IN LICENSE pragma solidity 0.6.12; import "@openzeppelin/contracts/math/SafeMath.sol"; import "./interfaces/IReserveToken.sol"; import "./SafeERC20Ex.sol"; /** * @dev This library implements ERC20 and SafeERC20 utilities for reserve tokens, which can be either ERC20 tokens or ETH */ library ReserveToken { using SafeERC20 for IERC20; using SafeERC20Ex for IERC20; // the address that represents an ETH reserve IReserveToken public constant NATIVE_TOKEN_ADDRESS = IReserveToken(0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE); /** * @dev returns whether the provided token represents an ERC20 or ETH reserve */ function isNativeToken(IReserveToken reserveToken) internal pure returns (bool) { return reserveToken == NATIVE_TOKEN_ADDRESS; } /** * @dev returns the balance of the reserve token */ function balanceOf(IReserveToken reserveToken, address account) internal view returns (uint256) { if (isNativeToken(reserveToken)) { return account.balance; } return toIERC20(reserveToken).balanceOf(account); } /** * @dev transfers a specific amount of the reserve token */ function safeTransfer( IReserveToken reserveToken, address to, uint256 amount ) internal { if (amount == 0) { return; } if (isNativeToken(reserveToken)) { payable(to).transfer(amount); } else { toIERC20(reserveToken).safeTransfer(to, amount); } } /** * @dev transfers a specific amount of the reserve token from a specific holder using the allowance mechanism * * note that the function ignores a reserve token which represents an ETH reserve */ function safeTransferFrom( IReserveToken reserveToken, address from, address to, uint256 amount ) internal { if (amount == 0 || isNativeToken(reserveToken)) { return; } toIERC20(reserveToken).safeTransferFrom(from, to, amount); } /** * @dev ensures that the spender has sufficient allowance * * note that this function ignores a reserve token which represents an ETH reserve */ function ensureApprove( IReserveToken reserveToken, address spender, uint256 amount ) internal { if (isNativeToken(reserveToken)) { return; } toIERC20(reserveToken).ensureApprove(spender, amount); } /** * @dev utility function that converts an IReserveToken to an IERC20 */ function toIERC20(IReserveToken reserveToken) private pure returns (IERC20) { return IERC20(address(reserveToken)); } }
// SPDX-License-Identifier: SEE LICENSE IN LICENSE pragma solidity 0.6.12; import "./ILiquidityProtectionStore.sol"; import "./ILiquidityProtectionStats.sol"; import "./ILiquidityProtectionSettings.sol"; import "./ILiquidityProtectionSystemStore.sol"; import "./ITransferPositionCallback.sol"; import "../../utility/interfaces/ITokenHolder.sol"; import "../../token/interfaces/IReserveToken.sol"; import "../../converter/interfaces/IConverterAnchor.sol"; /** * @dev Liquidity Protection interface */ interface ILiquidityProtection { function store() external view returns (ILiquidityProtectionStore); function stats() external view returns (ILiquidityProtectionStats); function settings() external view returns (ILiquidityProtectionSettings); function systemStore() external view returns (ILiquidityProtectionSystemStore); function wallet() external view returns (ITokenHolder); function addLiquidityFor( address owner, IConverterAnchor poolAnchor, IReserveToken reserveToken, uint256 amount ) external payable returns (uint256); function addLiquidity( IConverterAnchor poolAnchor, IReserveToken reserveToken, uint256 amount ) external payable returns (uint256); function removeLiquidity(uint256 id, uint32 portion) external; function transferPosition(uint256 id, address newProvider) external returns (uint256); function transferPositionAndNotify( uint256 id, address newProvider, ITransferPositionCallback callback, bytes calldata data ) external returns (uint256); }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "../../liquidity-protection/interfaces/ILiquidityProvisionEventsSubscriber.sol"; import "./IStakingRewardsStore.sol"; interface IStakingRewards is ILiquidityProvisionEventsSubscriber { /** * @dev triggered when pending rewards are being claimed */ event RewardsClaimed(address indexed provider, uint256 amount); /** * @dev triggered when pending rewards are being staked in a pool */ event RewardsStaked(address indexed provider, IDSToken indexed poolToken, uint256 amount, uint256 indexed newId); function store() external view returns (IStakingRewardsStore); function pendingRewards(address provider) external view returns (uint256); function pendingPoolRewards(address provider, IDSToken poolToken) external view returns (uint256); function pendingReserveRewards( address provider, IDSToken poolToken, IReserveToken reserveToken ) external view returns (uint256); function rewardsMultiplier( address provider, IDSToken poolToken, IReserveToken reserveToken ) external view returns (uint32); function totalClaimedRewards(address provider) external view returns (uint256); function claimRewards() external returns (uint256); function stakeRewards(uint256 maxAmount, IDSToken poolToken) external returns (uint256, uint256); function storePoolRewards(address[] calldata providers, IDSToken poolToken) external; }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`) * and `uint256` (`UintSet`) are supported. */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping (bytes32 => uint256) _indexes; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; // When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement. bytes32 lastvalue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastvalue; // Update the index for the moved value set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { require(set._values.length > index, "EnumerableSet: index out of bounds"); return set._values[index]; } // Bytes32Set struct Bytes32Set { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _add(set._inner, value); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _remove(set._inner, value); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) { return _contains(set._inner, value); } /** * @dev Returns the number of values in the set. O(1). */ function length(Bytes32Set storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) { return _at(set._inner, index); } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint160(uint256(_at(set._inner, index)))); } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values on the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.2 <0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "./IClaimable.sol"; /// @title Mintable Token interface interface IMintableToken is IERC20, IClaimable { function issue(address to, uint256 amount) external; function destroy(address from, uint256 amount) external; }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; /// @title Claimable contract interface interface IClaimable { function owner() external view returns (address); function transferOwnership(address newOwner) external; function acceptOwnership() external; }
// SPDX-License-Identifier: SEE LICENSE IN LICENSE pragma solidity 0.6.12; import "./interfaces/IOwned.sol"; /** * @dev This contract provides support and utilities for contract ownership. */ contract Owned is IOwned { address private _owner; address private _newOwner; /** * @dev triggered when the owner is updated */ event OwnerUpdate(address indexed prevOwner, address indexed newOwner); /** * @dev initializes a new Owned instance */ constructor() public { _owner = msg.sender; } // allows execution by the owner only modifier ownerOnly { _ownerOnly(); _; } // error message binary size optimization function _ownerOnly() private view { require(msg.sender == _owner, "ERR_ACCESS_DENIED"); } /** * @dev allows transferring the contract ownership * * Requirements: * * - the caller must be the owner of the contract * * note the new owner still needs to accept the transfer */ function transferOwnership(address newOwner) public override ownerOnly { require(newOwner != _owner, "ERR_SAME_OWNER"); _newOwner = newOwner; } /** * @dev used by a new owner to accept an ownership transfer */ function acceptOwnership() public override { require(msg.sender == _newOwner, "ERR_ACCESS_DENIED"); emit OwnerUpdate(_owner, _newOwner); _owner = _newOwner; _newOwner = address(0); } /** * @dev returns the address of the current owner */ function owner() public view override returns (address) { return _owner; } /** * @dev returns the address of the new owner candidate */ function newOwner() external view returns (address) { return _newOwner; } }
// SPDX-License-Identifier: SEE LICENSE IN LICENSE pragma solidity 0.6.12; /** * @dev Contract Registry interface */ interface IContractRegistry { function addressOf(bytes32 contractName) external view returns (address); }
// SPDX-License-Identifier: SEE LICENSE IN LICENSE pragma solidity 0.6.12; /** * @dev Owned interface */ interface IOwned { function owner() external view returns (address); function transferOwnership(address newOwner) external; function acceptOwnership() external; }
// SPDX-License-Identifier: SEE LICENSE IN LICENSE pragma solidity 0.6.12; /** * @dev This contract is used to represent reserve tokens, which are tokens that can either be regular ERC20 tokens or * native ETH (represented by the NATIVE_TOKEN_ADDRESS address) * * Please note that this interface is intentionally doesn't inherit from IERC20, so that it'd be possible to effectively * override its balanceOf() function in the ReserveToken library */ interface IReserveToken { }
// SPDX-License-Identifier: SEE LICENSE IN LICENSE pragma solidity 0.6.12; import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol"; /** * @dev Extends the SafeERC20 library with additional operations */ library SafeERC20Ex { using SafeERC20 for IERC20; /** * @dev ensures that the spender has sufficient allowance */ function ensureApprove( IERC20 token, address spender, uint256 amount ) internal { if (amount == 0) { return; } uint256 allowance = token.allowance(address(this), spender); if (allowance >= amount) { return; } if (allowance > 0) { token.safeApprove(spender, 0); } token.safeApprove(spender, amount); } }
// SPDX-License-Identifier: SEE LICENSE IN LICENSE pragma solidity 0.6.12; import "../../converter/interfaces/IConverterAnchor.sol"; import "../../token/interfaces/IDSToken.sol"; import "../../token/interfaces/IReserveToken.sol"; import "../../utility/interfaces/IOwned.sol"; /** * @dev Liquidity Protection Store interface */ interface ILiquidityProtectionStore is IOwned { function withdrawTokens( IReserveToken token, address recipient, uint256 amount ) external; function protectedLiquidity(uint256 id) external view returns ( address, IDSToken, IReserveToken, uint256, uint256, uint256, uint256, uint256 ); function addProtectedLiquidity( address provider, IDSToken poolToken, IReserveToken reserveToken, uint256 poolAmount, uint256 reserveAmount, uint256 reserveRateN, uint256 reserveRateD, uint256 timestamp ) external returns (uint256); function updateProtectedLiquidityAmounts( uint256 id, uint256 poolNewAmount, uint256 reserveNewAmount ) external; function removeProtectedLiquidity(uint256 id) external; function lockedBalance(address provider, uint256 index) external view returns (uint256, uint256); function lockedBalanceRange( address provider, uint256 startIndex, uint256 endIndex ) external view returns (uint256[] memory, uint256[] memory); function addLockedBalance( address provider, uint256 reserveAmount, uint256 expirationTime ) external returns (uint256); function removeLockedBalance(address provider, uint256 index) external; function systemBalance(IReserveToken poolToken) external view returns (uint256); function incSystemBalance(IReserveToken poolToken, uint256 poolAmount) external; function decSystemBalance(IReserveToken poolToken, uint256 poolAmount) external; }
// SPDX-License-Identifier: SEE LICENSE IN LICENSE pragma solidity 0.6.12; import "../../converter/interfaces/IConverterAnchor.sol"; import "../../token/interfaces/IDSToken.sol"; import "../../token/interfaces/IReserveToken.sol"; /** * @dev Liquidity Protection Stats interface */ interface ILiquidityProtectionStats { function increaseTotalAmounts( address provider, IDSToken poolToken, IReserveToken reserveToken, uint256 poolAmount, uint256 reserveAmount ) external; function decreaseTotalAmounts( address provider, IDSToken poolToken, IReserveToken reserveToken, uint256 poolAmount, uint256 reserveAmount ) external; function addProviderPool(address provider, IDSToken poolToken) external returns (bool); function removeProviderPool(address provider, IDSToken poolToken) external returns (bool); function totalPoolAmount(IDSToken poolToken) external view returns (uint256); function totalReserveAmount(IDSToken poolToken, IReserveToken reserveToken) external view returns (uint256); function totalProviderAmount( address provider, IDSToken poolToken, IReserveToken reserveToken ) external view returns (uint256); function providerPools(address provider) external view returns (IDSToken[] memory); }
// SPDX-License-Identifier: SEE LICENSE IN LICENSE pragma solidity 0.6.12; import "../../converter/interfaces/IConverterAnchor.sol"; import "../../token/interfaces/IReserveToken.sol"; import "./ILiquidityProvisionEventsSubscriber.sol"; /** * @dev Liquidity Protection Settings interface */ interface ILiquidityProtectionSettings { function isPoolWhitelisted(IConverterAnchor poolAnchor) external view returns (bool); function poolWhitelist() external view returns (address[] memory); function subscribers() external view returns (address[] memory); function isPoolSupported(IConverterAnchor poolAnchor) external view returns (bool); function minNetworkTokenLiquidityForMinting() external view returns (uint256); function defaultNetworkTokenMintingLimit() external view returns (uint256); function networkTokenMintingLimits(IConverterAnchor poolAnchor) external view returns (uint256); function addLiquidityDisabled(IConverterAnchor poolAnchor, IReserveToken reserveToken) external view returns (bool); function minProtectionDelay() external view returns (uint256); function maxProtectionDelay() external view returns (uint256); function minNetworkCompensation() external view returns (uint256); function lockDuration() external view returns (uint256); function averageRateMaxDeviation() external view returns (uint32); }
// SPDX-License-Identifier: SEE LICENSE IN LICENSE pragma solidity 0.6.12; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "../../converter/interfaces/IConverterAnchor.sol"; /** * @dev Liquidity Protection System Store interface */ interface ILiquidityProtectionSystemStore { function systemBalance(IERC20 poolToken) external view returns (uint256); function incSystemBalance(IERC20 poolToken, uint256 poolAmount) external; function decSystemBalance(IERC20 poolToken, uint256 poolAmount) external; function networkTokensMinted(IConverterAnchor poolAnchor) external view returns (uint256); function incNetworkTokensMinted(IConverterAnchor poolAnchor, uint256 amount) external; function decNetworkTokensMinted(IConverterAnchor poolAnchor, uint256 amount) external; }
// SPDX-License-Identifier: SEE LICENSE IN LICENSE pragma solidity 0.6.12; /** * @dev Transfer position event callback interface */ interface ITransferPositionCallback { function onTransferPosition( uint256 newId, address provider, bytes calldata data ) external; }
// SPDX-License-Identifier: SEE LICENSE IN LICENSE pragma solidity 0.6.12; import "../../token/interfaces/IReserveToken.sol"; import "./IOwned.sol"; /** * @dev Token Holder interface */ interface ITokenHolder is IOwned { receive() external payable; function withdrawTokens( IReserveToken reserveToken, address payable to, uint256 amount ) external; function withdrawTokensMultiple( IReserveToken[] calldata reserveTokens, address payable to, uint256[] calldata amounts ) external; }
// SPDX-License-Identifier: SEE LICENSE IN LICENSE pragma solidity 0.6.12; import "../../utility/interfaces/IOwned.sol"; /** * @dev Converter Anchor interface */ interface IConverterAnchor is IOwned { }
// SPDX-License-Identifier: SEE LICENSE IN LICENSE pragma solidity 0.6.12; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "../../converter/interfaces/IConverterAnchor.sol"; import "../../utility/interfaces/IOwned.sol"; /** * @dev DSToken interface */ interface IDSToken is IConverterAnchor, IERC20 { function issue(address recipient, uint256 amount) external; function destroy(address recipient, uint256 amount) external; }
// SPDX-License-Identifier: SEE LICENSE IN LICENSE pragma solidity 0.6.12; import "../../converter/interfaces/IConverterAnchor.sol"; import "../../token/interfaces/IReserveToken.sol"; /** * @dev Liquidity provision events subscriber interface */ interface ILiquidityProvisionEventsSubscriber { function onAddingLiquidity( address provider, IConverterAnchor poolAnchor, IReserveToken reserveToken, uint256 poolAmount, uint256 reserveAmount ) external; function onRemovingLiquidity( uint256 id, address provider, IConverterAnchor poolAnchor, IReserveToken reserveToken, uint256 poolAmount, uint256 reserveAmount ) external; }
// SPDX-License-Identifier: MIT pragma solidity 0.6.12; import "../../token/interfaces/IReserveToken.sol"; import "../../token/interfaces/IDSToken.sol"; struct PoolProgram { uint256 startTime; uint256 endTime; uint256 rewardRate; IReserveToken[2] reserveTokens; uint32[2] rewardShares; } struct PoolRewards { uint256 lastUpdateTime; uint256 rewardPerToken; uint256 totalClaimedRewards; } struct ProviderRewards { uint256 rewardPerToken; uint256 pendingBaseRewards; uint256 totalClaimedRewards; uint256 effectiveStakingTime; uint256 baseRewardsDebt; uint32 baseRewardsDebtMultiplier; } interface IStakingRewardsStore { function isPoolParticipating(IDSToken poolToken) external view returns (bool); function isReserveParticipating(IDSToken poolToken, IReserveToken reserveToken) external view returns (bool); function addPoolProgram( IDSToken poolToken, IReserveToken[2] calldata reserveTokens, uint32[2] calldata rewardShares, uint256 endTime, uint256 rewardRate ) external; function removePoolProgram(IDSToken poolToken) external; function setPoolProgramEndTime(IDSToken poolToken, uint256 newEndTime) external; function poolProgram(IDSToken poolToken) external view returns ( uint256, uint256, uint256, IReserveToken[2] memory, uint32[2] memory ); function poolPrograms() external view returns ( IDSToken[] memory, uint256[] memory, uint256[] memory, uint256[] memory, IReserveToken[2][] memory, uint32[2][] memory ); function poolRewards(IDSToken poolToken, IReserveToken reserveToken) external view returns ( uint256, uint256, uint256 ); function updatePoolRewardsData( IDSToken poolToken, IReserveToken reserveToken, uint256 lastUpdateTime, uint256 rewardPerToken, uint256 totalClaimedRewards ) external; function providerRewards( address provider, IDSToken poolToken, IReserveToken reserveToken ) external view returns ( uint256, uint256, uint256, uint256, uint256, uint32 ); function updateProviderRewardsData( address provider, IDSToken poolToken, IReserveToken reserveToken, uint256 rewardPerToken, uint256 pendingBaseRewards, uint256 totalClaimedRewards, uint256 effectiveStakingTime, uint256 baseRewardsDebt, uint32 baseRewardsDebtMultiplier ) external; function updateProviderLastClaimTime(address provider) external; function providerLastClaimTime(address provider) external view returns (uint256); }
{ "optimizer": { "enabled": true, "runs": 200 }, "metadata": { "bytecodeHash": "none" }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "abi" ] } }, "libraries": {} }
Contract Security Audit
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[{"inputs":[{"internalType":"contract IStakingRewardsStore","name":"store","type":"address"},{"internalType":"contract ITokenGovernance","name":"networkTokenGovernance","type":"address"},{"internalType":"contract ICheckpointStore","name":"lastRemoveTimes","type":"address"},{"internalType":"contract IContractRegistry","name":"registry","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"prevOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnerUpdate","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"provider","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"RewardsClaimed","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"provider","type":"address"},{"indexed":true,"internalType":"contract IDSToken","name":"poolToken","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":true,"internalType":"uint256","name":"newId","type":"uint256"}],"name":"RewardsStaked","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"previousAdminRole","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"newAdminRole","type":"bytes32"}],"name":"RoleAdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleGranted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleRevoked","type":"event"},{"inputs":[],"name":"DEFAULT_ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"ROLE_PUBLISHER","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"ROLE_SUPERVISOR","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"ROLE_UPDATER","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"acceptOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"claimRewards","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleAdmin","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"getRoleMember","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleMemberCount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"grantRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"newOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"provider","type":"address"},{"internalType":"contract IConverterAnchor","name":"poolAnchor","type":"address"},{"internalType":"contract IReserveToken","name":"reserveToken","type":"address"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"onAddingLiquidity","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"address","name":"provider","type":"address"},{"internalType":"contract IConverterAnchor","name":"","type":"address"},{"internalType":"contract IReserveToken","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"onRemovingLiquidity","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"onlyOwnerCanUpdateRegistry","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"provider","type":"address"},{"internalType":"contract IDSToken","name":"poolToken","type":"address"}],"name":"pendingPoolRewards","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"provider","type":"address"},{"internalType":"contract IDSToken","name":"poolToken","type":"address"},{"internalType":"contract IReserveToken","name":"reserveToken","type":"address"}],"name":"pendingReserveRewards","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"provider","type":"address"}],"name":"pendingRewards","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"prevRegistry","outputs":[{"internalType":"contract IContractRegistry","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"registry","outputs":[{"internalType":"contract IContractRegistry","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"restoreRegistry","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"restrictOwnerOnly","type":"bool"}],"name":"restrictRegistryUpdate","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"provider","type":"address"},{"internalType":"contract IDSToken","name":"poolToken","type":"address"},{"internalType":"contract IReserveToken","name":"reserveToken","type":"address"}],"name":"rewardsMultiplier","outputs":[{"internalType":"uint32","name":"","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"maxAmount","type":"uint256"},{"internalType":"contract IDSToken","name":"poolToken","type":"address"}],"name":"stakeRewards","outputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"store","outputs":[{"internalType":"contract IStakingRewardsStore","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"providers","type":"address[]"},{"internalType":"contract IDSToken","name":"poolToken","type":"address"}],"name":"storePoolRewards","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"provider","type":"address"}],"name":"totalClaimedRewards","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"updateRegistry","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000891aff26593da95e574e3f62619dad6624fb5693000000000000000000000000a489c2b5b36835a327851ab917a80562b5afc244000000000000000000000000f8a2fb650e25a26ce839d64be8a0abbcb0b87b3200000000000000000000000052ae12abe5d8bd778bd5397f99ca900624cfadd4
-----Decoded View---------------
Arg [0] : store (address): 0x891AfF26593Da95e574E3f62619dAD6624FB5693
Arg [1] : networkTokenGovernance (address): 0xa489C2b5b36835A327851Ab917A80562B5AFC244
Arg [2] : lastRemoveTimes (address): 0xF8a2FB650e25a26CE839D64bE8a0aBbCb0b87B32
Arg [3] : registry (address): 0x52Ae12ABe5D8BD778BD5397F99cA900624CfADD4
-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 000000000000000000000000891aff26593da95e574e3f62619dad6624fb5693
Arg [1] : 000000000000000000000000a489c2b5b36835a327851ab917a80562b5afc244
Arg [2] : 000000000000000000000000f8a2fb650e25a26ce839d64be8a0abbcb0b87b32
Arg [3] : 00000000000000000000000052ae12abe5d8bd778bd5397f99ca900624cfadd4
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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.