ERC-20
Yield Farming
Overview
Max Total Supply
43,966,398.309400585888399222 DELTA
Holders
4,538 ( 0.022%)
Market
Price
$0.76 @ 0.000309 ETH (+0.02%)
Onchain Market Cap
$33,576,083.20
Circulating Supply Market Cap
$0.00
Other Info
Token Contract (WITH 18 Decimals)
Balance
9.677049519704728826 DELTAValue
$7.39 ( ~0.00299336729982052 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
DELTAToken
Compiler Version
v0.7.6+commit.7338295f
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// DELTA-BUG-BOUNTY pragma experimental ABIEncoderV2; pragma solidity ^0.7.6; import "../libs/Context.sol"; import "../../interfaces/IOVLBalanceHandler.sol"; import "../../interfaces/IOVLTransferHandler.sol"; import "../../interfaces/IOVLVestingCalculator.sol"; import "../../interfaces/IRebasingLiquidityToken.sol"; import "../../interfaces/IWETH.sol"; import "./Common/OVLBase.sol"; import "../../common/OVLTokenTypes.sol"; import "./Handlers/post_first_rebasing/OVLTransferHandler.sol"; import "./Handlers/post_first_rebasing/OVLBalanceHandler.sol"; import "./Handlers/pre_first_rebasing/OVLLPRebasingHandler.sol"; import "./Handlers/pre_first_rebasing/OVLLPRebasingBalanceHandler.sol"; // Implementation of the DELTA token responsible // for the CORE ecosystem options layer // guarding unlocked liquidity inside of the ecosystem // This token is time lock guarded by 90% FoT which disappears after 2 weeks to 0% // balanceOf will return the spendable amount outside of the fee on transfer. contract DELTAToken is OVLBase, Context, IERC20 { using SafeMath for uint256; using Address for address; address public governance; address public tokenTransferHandler; address public rebasingLPAddress; address public tokenBalanceHandler; address public pendingGovernance; // ERC-20 Variables string private constant NAME = "DELTA.financial - deep DeFi derivatives"; string private constant SYMBOL = "DELTA"; uint8 private constant DECIMALS = 18; uint256 private constant TOTAL_SUPPLY = 45_000_000e18; // Configuration address private constant WETH_ADDRESS = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2; address private constant BURNER = 0xDeaDbeefdEAdbeefdEadbEEFdeadbeEFdEaDbeeF; address private constant LSW_ADDRESS = 0xdaFCE5670d3F67da9A3A44FE6bc36992e5E2beaB; address private constant UNISWAP_V2_ROUTER = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D; // Handler for activation after first rebasing address private immutable tokenBalanceHandlerMain; address private immutable tokenTransferHandlerMain; // Lookup for pair address immutable public _PAIR_ADDRESS; constructor (address rebasingLP, address multisig, address dfv) { require(address(this) < WETH_ADDRESS, "DELTAToken: Invalid Token Address"); require(multisig != address(0)); require(dfv != address(0)); require(rebasingLP != address(0)); // We get the pair address // token0 is the smaller address address uniswapPair = address(uint(keccak256(abi.encodePacked( hex'ff', 0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f, // Mainnet uniswap factory keccak256(abi.encodePacked(address(this), WETH_ADDRESS)), hex'96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f' // init code hash )))); // We whitelist the pair to have no vesting on reception governance = msg.sender; // bypass !gov checks _PAIR_ADDRESS = uniswapPair; setNoVestingWhitelist(uniswapPair, true); setNoVestingWhitelist(BURNER, true); setNoVestingWhitelist(rebasingLP, true); setNoVestingWhitelist(UNISWAP_V2_ROUTER, true); // We set the router to no vesting so we dont need to check it in the balance handler to return maxbalance. // Since we return maxbalance of everyone who has no vesting. setWhitelists(multisig, true, true, true); // We are not setting dfv here intentionally because we have a check inside the dfv that it has them // Since DFV needs to be able to set whitelists itself, so it needs to be a part of the modules setFullSenderWhitelist(LSW_ADDRESS, true); // Nessesary for lsw because it doesnt just send to the pair governance = multisig; rebasingLPAddress = rebasingLP; _provideInitialSupply(LSW_ADDRESS, TOTAL_SUPPLY); // Set post first rebasing ones now into private variables address transferHandler = address(new OVLTransferHandler(uniswapPair, dfv)); tokenTransferHandlerMain = transferHandler; tokenBalanceHandlerMain = address(new OVLBalanceHandler(IOVLTransferHandler(transferHandler), IERC20(uniswapPair))); //Set pre rebasing ones as main ones tokenTransferHandler = address(new OVLLPRebasingHandler(uniswapPair)); tokenBalanceHandler = address(new OVLLPRebasingBalanceHandler()); } function activatePostFirstRebasingState() public isGovernance() { require(distributor != address(0), "Set the distributor first!"); tokenTransferHandler = tokenTransferHandlerMain; tokenBalanceHandler = tokenBalanceHandlerMain; } function name() public pure returns (string memory) { return NAME; } function symbol() public pure returns (string memory) { return SYMBOL; } function decimals() public pure returns (uint8) { return DECIMALS; } function totalSupply() public view override returns (uint256) { return TOTAL_SUPPLY - balanceOf(BURNER); } function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } function matureAllTokensOf(UserInformation storage ui, address account) internal { delete vestingTransactions[account]; // remove all vesting buckets ui.maturedBalance = ui.maxBalance; } function setFullSenderWhitelist(address account, bool canSendToMatureBalances) public isGovernance() { UserInformation storage ui = _userInformation[account]; matureAllTokensOf(ui,account); ui.fullSenderWhitelisted = canSendToMatureBalances; } function setImmatureRecipentWhitelist(address account, bool canRecieveImmatureBalances) public isGovernance() { UserInformation storage ui = _userInformation[account]; matureAllTokensOf(ui,account); ui.immatureReceiverWhitelisted = canRecieveImmatureBalances; } function setNoVestingWhitelist(address account, bool recievesBalancesWithoutVestingProcess) public isGovernance() { UserInformation storage ui = _userInformation[account]; matureAllTokensOf(ui,account); ui.noVestingWhitelisted = recievesBalancesWithoutVestingProcess; } function setWhitelists(address account, bool canSendToMatureBalances, bool canRecieveImmatureBalances, bool recievesBalancesWithoutVestingProcess) public isGovernance() { UserInformation storage ui = _userInformation[account]; matureAllTokensOf(ui,account); ui.noVestingWhitelisted = recievesBalancesWithoutVestingProcess; ui.immatureReceiverWhitelisted = canRecieveImmatureBalances; ui.fullSenderWhitelisted = canSendToMatureBalances; } // Allows for liquidity rebasing atomically // Does a callback to rlp and closes right after function performLiquidityRebasing() public { onlyRLP(); // guarantees this call can be only done by the rebasing lp contract liquidityRebasingPermitted = true; IRebasingLiquidityToken(rebasingLPAddress).tokenCaller(); liquidityRebasingPermitted = false; // Rebasing will adjust the lp tokens balance of the pair. Most likely to 0. This means without setting this here there is an attack vector lpTokensInPair = IERC20(_PAIR_ADDRESS).balanceOf(_PAIR_ADDRESS); } // Allows the rebasing LP to change balance of an account // Nessesary for fee efficiency of the rebasing process function adjustBalanceOfNoVestingAccount(address account, uint256 amount, bool isAddition) public { onlyRLP(); // guarantees this call can be only done by the rebasing lp contract UserInformation storage ui = _userInformation[account]; require(ui.noVestingWhitelisted, "Account is a vesting address"); if(isAddition) { ui.maxBalance = ui.maxBalance.add(amount); ui.maturedBalance = ui.maturedBalance.add(amount); } else { ui.maxBalance = amount; ui.maturedBalance = amount; } } // allow only RLP to call functions that call this function function onlyRLP() internal view { require(msg.sender == rebasingLPAddress, "DELTAToken: Only Rebasing LP contract can call this function"); } function _transfer(address sender, address recipient, uint256 amount) internal virtual { bytes memory callData = abi.encodeWithSelector(IOVLTransferHandler.handleTransfer.selector, sender, recipient, amount); (bool success, bytes memory result) = tokenTransferHandler.delegatecall(callData); if (!success) { revert(_getRevertMsg(result)); } } function balanceOf(address account) public view override returns (uint256) { return IOVLBalanceHandler(tokenBalanceHandler).handleBalanceCalculations(account, msg.sender); } function _provideInitialSupply(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: supplying zero address"); UserInformation storage ui = _userInformation[account]; ui.maturedBalance = ui.maturedBalance.add(amount); ui.maxBalance = ui.maxBalance.add(amount); emit Transfer(address(0), account, amount); } function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /// @notice sets a new distributor potentially with new distribution rules function setDistributor(address _newDistributor) public isGovernance() { distributor = _newDistributor; setWhitelists(_newDistributor, true, true, true); } /// @notice initializes the change of governance function setPendingGovernance(address _newGov) public isGovernance() { pendingGovernance = _newGov; } function acceptGovernance() public { require(msg.sender == pendingGovernance); governance = msg.sender; setWhitelists(msg.sender, true, true, true); delete pendingGovernance; } /// @notice sets the function that calculates returns from balanceOF function setBalanceCalculator(address _newBalanceCalculator) public isGovernance() { tokenBalanceHandler = _newBalanceCalculator; } /// @notice sets a contract with new logic for transfer handlers (contract upgrade) function setTokenTransferHandler(address _newHandler) public isGovernance() { tokenTransferHandler = _newHandler; } function _getRevertMsg(bytes memory _returnData) internal pure returns (string memory) { // If the _res length is less than 68, then the transaction failed silently (without a revert message) if (_returnData.length < 68) return 'Transaction reverted silently'; assembly { // Slice the sighash. _returnData := add(_returnData, 0x04) } return abi.decode(_returnData, (string)); // All that remains is the revert string } function totalsForWallet(address account) public view returns (WalletTotals memory totals) { uint256 mature = _userInformation[account].maturedBalance; uint256 immature; for(uint256 i = 0; i < QTY_EPOCHS; i++) { uint256 amount = vestingTransactions[account][i].amount; uint256 matureTxBalance = IOVLVestingCalculator(tokenBalanceHandler).getMatureBalance(vestingTransactions[account][i], block.timestamp); mature = mature.add(matureTxBalance); immature = immature.add(amount.sub(matureTxBalance)); } totals.mature = mature; totals.immature = immature; totals.total = mature.add(immature); } // Optimization for Balance Handler function getUserInfo(address user) external view returns (UserInformationLite memory) { UserInformation storage info = _userInformation[user]; return UserInformationLite(info.maturedBalance, info.maxBalance, info.mostMatureTxIndex, info.lastInTxIndex); } // Optimization for `require` checks modifier isGovernance() { _isGovernance(); _; } function _isGovernance() private view { require(msg.sender == governance, "!gov"); } // Remaining for js tests only before refactor function getTransactionDetail(VestingTransaction memory _tx) public view returns (VestingTransactionDetailed memory dtx) { return IOVLVestingCalculator(tokenBalanceHandler).getTransactionDetails(_tx, block.timestamp); } function userInformation(address user) external view returns (UserInformation memory) { return _userInformation[user]; } }
// 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; } }
pragma experimental ABIEncoderV2; pragma solidity ^0.7.6; interface IOVLBalanceHandler { function handleBalanceCalculations(address, address) external view returns (uint256); }
pragma experimental ABIEncoderV2; pragma solidity ^0.7.6; interface IOVLTransferHandler { function handleTransfer(address sender, address recipient, uint256 amount) external; }
pragma solidity ^0.7.6; pragma abicoder v2; import "../common/OVLTokenTypes.sol"; interface IOVLVestingCalculator { function getTransactionDetails(VestingTransaction memory _tx) external view returns (VestingTransactionDetailed memory dtx); function getTransactionDetails(VestingTransaction memory _tx, uint256 _blockTimestamp) external pure returns (VestingTransactionDetailed memory dtx); function getMatureBalance(VestingTransaction memory _tx, uint256 _blockTimestamp) external pure returns (uint256 mature); function calculateTransactionDebit(VestingTransactionDetailed memory dtx, uint256 matureAmountNeeded, uint256 currentTimestamp) external pure returns (uint256 outputDebit); }
pragma experimental ABIEncoderV2; pragma solidity ^0.7.6; import "./IERC20Upgradeable.sol"; interface IRebasingLiquidityToken is IERC20Upgradeable { function tokenCaller() external; function reserveCaller(uint256,uint256) external; function wrapWithReturn() external returns (uint256); function wrap() external; function rlpPerLP() external view returns (uint256); }
pragma solidity >=0.6.0 <0.8.0; interface IWETH { function deposit() external payable; function transfer(address to, uint value) external returns (bool); function withdraw(uint) external; function balanceOf(address) external view returns (uint256); }
// DELTA-BUG-BOUNTY pragma abicoder v2; pragma solidity ^0.7.6; import "./../../../common/OVLTokenTypes.sol"; contract OVLBase { // Shared state begin v0 mapping (address => VestingTransaction[QTY_EPOCHS]) public vestingTransactions; mapping (address => UserInformation) internal _userInformation; mapping (address => uint256) internal _maxPossibleBalances; mapping (address => mapping (address => uint256)) internal _allowances; address public distributor; uint256 public lpTokensInPair; bool public liquidityRebasingPermitted; uint256 [72] private _gap; // Shared state end of v0 }
// SPDX-License-Identifier: UNLICENSED // DELTA-BUG-BOUNTY pragma solidity ^0.7.6; struct VestingTransaction { uint256 amount; uint256 fullVestingTimestamp; } struct WalletTotals { uint256 mature; uint256 immature; uint256 total; } struct UserInformation { // This is going to be read from only [0] uint256 mostMatureTxIndex; uint256 lastInTxIndex; uint256 maturedBalance; uint256 maxBalance; bool fullSenderWhitelisted; // Note that recieving immature balances doesnt mean they recieve them fully vested just that senders can do it bool immatureReceiverWhitelisted; bool noVestingWhitelisted; } struct UserInformationLite { uint256 maturedBalance; uint256 maxBalance; uint256 mostMatureTxIndex; uint256 lastInTxIndex; } struct VestingTransactionDetailed { uint256 amount; uint256 fullVestingTimestamp; // uint256 percentVestedE4; uint256 mature; uint256 immature; } uint256 constant QTY_EPOCHS = 7; uint256 constant SECONDS_PER_EPOCH = 172800; // About 2days uint256 constant FULL_EPOCH_TIME = SECONDS_PER_EPOCH * QTY_EPOCHS; // Precision Multiplier -- this many zeros (23) seems to get all the precision needed for all 18 decimals to be only off by a max of 1 unit uint256 constant PM = 1e23;
// DELTA-BUG-BOUNTY pragma solidity ^0.7.6; pragma abicoder v2; import "../../../libs/Address.sol"; import "../../../libs/SafeMath.sol"; import "../../Common/OVLBase.sol"; import "../../../../common/OVLTokenTypes.sol"; import "../../Common/OVLVestingCalculator.sol"; import "../../../../interfaces/IOVLTransferHandler.sol"; import "../../../../interfaces/IDeltaDistributor.sol"; import "../../../../interfaces/IDeltaToken.sol"; contract OVLTransferHandler is OVLBase, OVLVestingCalculator, IOVLTransferHandler { using SafeMath for uint256; using Address for address; address public immutable UNI_DELTA_WETH_PAIR; address public immutable DEEP_FARMING_VAULT; event Transfer(address indexed from, address indexed to, uint256 value); constructor(address pair, address dfv) { UNI_DELTA_WETH_PAIR = pair; DEEP_FARMING_VAULT = dfv; } function _removeBalanceFromSender(UserInformation storage senderInfo, address sender, bool immatureReceiverWhitelisted, uint256 amount) internal returns (uint256 totalRemoved) { uint256 mostMatureTxIndex = senderInfo.mostMatureTxIndex; uint256 lastInTxIndex = senderInfo.lastInTxIndex; // We check if recipent can get immature tokens, if so we go from the most imature first to be most fair to the user if (immatureReceiverWhitelisted) { ////// //// // we go from the least mature balance to the msot mature meaning -- //// ///// uint256 accumulatedBalance; while (true) { uint256 leastMatureTxAmount = vestingTransactions[sender][lastInTxIndex].amount; // Can never underflow due to if conditional uint256 remainingBalanceNeeded = amount - accumulatedBalance; if (leastMatureTxAmount >= remainingBalanceNeeded) { // We got enough in this bucket to cover the amount // We remove it from total and dont adjust the fully vesting timestamp // Because there might be tokens left still in it totalRemoved += remainingBalanceNeeded; vestingTransactions[sender][lastInTxIndex].amount = leastMatureTxAmount - remainingBalanceNeeded; // safe math already checked // We got what we wanted we leave the loop break; } else { //we add the whole amount of this bucket to the accumulated balance accumulatedBalance = accumulatedBalance.add(leastMatureTxAmount); totalRemoved += leastMatureTxAmount; delete vestingTransactions[sender][lastInTxIndex]; // And go to the more mature tx if (lastInTxIndex == 0) { lastInTxIndex = QTY_EPOCHS; } lastInTxIndex--; // If we can't get enough in this tx and this is the last one, then we bail if (lastInTxIndex == mostMatureTxIndex) { // If we still have enough to cover in the mature balance we use that uint256 maturedBalanceNeeded = amount - accumulatedBalance; // Exhaustive underflow check senderInfo.maturedBalance = senderInfo.maturedBalance.sub(maturedBalanceNeeded, "OVLTransferHandler: Insufficient funds"); totalRemoved += maturedBalanceNeeded; break; } } } // We write to storage the lastTx Index, which was in memory and we looped over it (or not) senderInfo.lastInTxIndex = lastInTxIndex; return totalRemoved; // End of logic in case reciever is whitelisted ( return assures) } uint256 maturedBalance = senderInfo.maturedBalance; ////// //// // we go from the most mature balance up //// ///// if (maturedBalance >= amount) { senderInfo.maturedBalance = maturedBalance - amount; // safemath safe totalRemoved = amount; } else { // Possibly using a partially vested transaction uint256 accumulatedBalance = maturedBalance; totalRemoved = maturedBalance; // Use the entire balance to start senderInfo.maturedBalance = 0; while (amount > accumulatedBalance) { VestingTransaction memory mostMatureTx = vestingTransactions[sender][mostMatureTxIndex]; // Guaranteed by `while` condition uint256 remainingBalanceNeeded = amount - accumulatedBalance; // Reduce this transaction as the final one VestingTransactionDetailed memory dtx = getTransactionDetails(mostMatureTx, block.timestamp); // credit is how much i got from this bucket // So if i didnt get enough from this bucket here we zero it and move to the next one if (remainingBalanceNeeded >= dtx.mature) { totalRemoved += dtx.amount; accumulatedBalance = accumulatedBalance.add(dtx.mature); delete vestingTransactions[sender][mostMatureTxIndex]; // refund gas } else { // Remove the only needed amount // Calculating debt based on the actual clamped credit eliminates // the need for debit/credit ratio checks we initially had. // Big gas savings using this one weird trick. Vitalik HATES it. uint256 outputDebit = calculateTransactionDebit(dtx, remainingBalanceNeeded, block.timestamp); remainingBalanceNeeded = outputDebit.add(remainingBalanceNeeded); totalRemoved += remainingBalanceNeeded; // We dont need to adjust timestamp vestingTransactions[sender][mostMatureTxIndex].amount = mostMatureTx.amount.sub(remainingBalanceNeeded, "Removing too much from bucket"); break; } // If we just went throught he lasttx bucket, and we did not get enough then we bail // Note if its the lastTransaction it already had a break; if (mostMatureTxIndex == lastInTxIndex && accumulatedBalance < amount) { // accumulatedBalance < amount because of the case its exactly equal with first if // Avoid ever looping around a second time because that would be bad revert("OVLTransferHandler: Insufficient funds"); } // We just emptied this so most mature one must be the next one mostMatureTxIndex++; if(mostMatureTxIndex == QTY_EPOCHS) { mostMatureTxIndex = 0; } } // We remove the entire amount removed // We already added amount senderInfo.mostMatureTxIndex = mostMatureTxIndex; } } // function _transferTokensToRecipient(address recipient, UserInformation memory senderInfo, UserInformation memory recipientInfo, uint256 amount) internal { function _transferTokensToRecipient(UserInformation storage recipientInfo, bool isSenderWhitelisted, address recipient, uint256 amount) internal { // If the sender can send fully or this recipent is whitelisted to not get vesting we just add it to matured balance (bool noVestingWhitelisted, uint256 maturedBalance, uint256 lastTransactionIndex) = (recipientInfo.noVestingWhitelisted, recipientInfo.maturedBalance, recipientInfo.lastInTxIndex); if(isSenderWhitelisted || noVestingWhitelisted) { recipientInfo.maturedBalance = maturedBalance.add(amount); return; } VestingTransaction storage lastTransaction = vestingTransactions[recipient][lastTransactionIndex]; // Do i fit in this bucket? // conditions for fitting inside a bucket are // 1 ) Either its less than 2 days old // 2 ) Or its more than 14 days old // 3 ) Or we move to the next one - which is empty or already matured // Note that only the first bucket checked can logically be less than 2 days old, this is a important optimization // So lets take care of that case now, so its not checked in the loop. uint256 timestampNow = block.timestamp; uint256 fullVestingTimestamp = lastTransaction.fullVestingTimestamp; if (timestampNow >= fullVestingTimestamp) {// Its mature we move it to mature and override or we move to the next one, which is always either 0 or matured recipientInfo.maturedBalance = maturedBalance.add(lastTransaction.amount); lastTransaction.amount = amount; lastTransaction.fullVestingTimestamp = timestampNow + FULL_EPOCH_TIME; } else if (fullVestingTimestamp >= timestampNow + SECONDS_PER_EPOCH * (QTY_EPOCHS - 1)) {// we add 12 days // we avoid overflows from 0 fullyvestedtimestamp // if fullyVestingTimestamp is bigger than that we should increment // but not bigger than fullyVesting // This check is exhaustive // If this is the case we just put it in this bucket. lastTransaction.amount = lastTransaction.amount.add(amount); /// No need to adjust timestamp` } else { // We move into the next one lastTransactionIndex++; if (lastTransactionIndex == QTY_EPOCHS) { lastTransactionIndex = 0; } // Loop over recipientInfo.lastInTxIndex = lastTransactionIndex; // To figure out if this is a empty bucket or a stale one // Its either the most mature one // Or its 0 // There is no other logical options // If this is the most mature one then we go > with most mature uint256 mostMature = recipientInfo.mostMatureTxIndex; if (mostMature == lastTransactionIndex) { // It was the most mature one, so we have to increment the most mature index mostMature++; if (mostMature == QTY_EPOCHS) { mostMature = 0; } recipientInfo.mostMatureTxIndex = mostMature; } VestingTransaction storage evenLatestTransaction = vestingTransactions[recipient][lastTransactionIndex]; // Its mature we move it to mature and override or we move to the next one, which is always either 0 or matured recipientInfo.maturedBalance = maturedBalance.add(evenLatestTransaction.amount); evenLatestTransaction.amount = amount; evenLatestTransaction.fullVestingTimestamp = timestampNow + FULL_EPOCH_TIME; } } function addAllowanceToDFV(address sender) internal { // If you transferFrom from anyone even 1 gwei unit // This will force dfv to have infinite allowance // But this is not abug because DFV has defacto infinite allowance becaose of this function // So there is no change _allowances[sender][DEEP_FARMING_VAULT] = uint(-1); } function handleUniswapAdjustmenets() internal{ uint256 newLPSupply = IERC20(UNI_DELTA_WETH_PAIR).balanceOf(UNI_DELTA_WETH_PAIR); require(newLPSupply >= lpTokensInPair, "DELTAToken: Liquidity removals are forbidden"); // We allow people to bump the number of LP tokens inside the pair, but we dont allow them to go lower // Making liquidity withdrawals impossible // Because uniswap queries banaceOf before doing a burn, that means we can detect a inflow of LP tokens // But someone could send them and then reset with this function // This is why we "lock" the bigger amount here and dont allow a lower amount than the last time // Making it impossible to anyone who sent the liquidity tokens to the pair (which is nessesary to burn) not be able to burn them lpTokensInPair = newLPSupply; } // This function does not need authentication, because this is EXCLUSIVELY // ever meant to be called using delegatecall() from the main token. // The memory it modifies in DELTAToken is what effects user balances. function handleTransfer(address sender, address recipient, uint256 amount) external override { require(sender != recipient, "DELTAToken: Can not send DELTA to yourself"); require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); /// Liquidity removal protection if (!liquidityRebasingPermitted && (sender == UNI_DELTA_WETH_PAIR || recipient == UNI_DELTA_WETH_PAIR)) { handleUniswapAdjustmenets(); } if(recipient == DEEP_FARMING_VAULT) { addAllowanceToDFV(sender); } UserInformation storage recipientInfo = _userInformation[recipient]; UserInformation storage senderInfo = _userInformation[sender]; uint256 totalRemoved = _removeBalanceFromSender(senderInfo, sender, recipientInfo.immatureReceiverWhitelisted, amount); uint256 toDistributor = totalRemoved.sub(amount, "OVLTransferHandler: Insufficient funds"); // We remove from max balance totals senderInfo.maxBalance = senderInfo.maxBalance.sub(totalRemoved, "OVLTransferHandler: Insufficient funds"); // Sanity check require(totalRemoved >= amount, "OVLTransferHandler: Insufficient funds"); // Max is 90% of total removed require(amount.mul(9) >= toDistributor, "DELTAToken: Burned too many tokens"); _creditDistributor(sender, toDistributor); ////// /// We add tokens to the recipient ////// _transferTokensToRecipient(recipientInfo, senderInfo.fullSenderWhitelisted, recipient, amount); // We add to total balance for sanity checks and uniswap router recipientInfo.maxBalance = recipientInfo.maxBalance.add(amount); emit Transfer(sender, recipient, amount); } function _creditDistributor(address creditedBy, uint256 amount) internal { address _distributor = distributor; // gas savings for storage reads UserInformation storage distributorInfo = _userInformation[distributor]; distributorInfo.maturedBalance = distributorInfo.maturedBalance.add(amount); // Should trigger an event here distributorInfo.maxBalance = distributorInfo.maxBalance.add(amount); IDeltaDistributor(_distributor).creditUser(creditedBy, amount); emit Transfer(creditedBy, _distributor, amount); } }
// DELTA-BUG-BOUNTY pragma solidity ^0.7.6; pragma abicoder v2; import "../../../../common/OVLTokenTypes.sol"; import "../../Common/OVLVestingCalculator.sol"; import "../../../../interfaces/IOVLBalanceHandler.sol"; import "../../../../interfaces/IOVLTransferHandler.sol"; import "../../../../interfaces/IRebasingLiquidityToken.sol"; import "../../../../interfaces/IDeltaToken.sol"; contract OVLBalanceHandler is OVLVestingCalculator, IOVLBalanceHandler { using SafeMath for uint256; IDeltaToken private immutable DELTA_TOKEN; IERC20 private immutable DELTA_X_WETH_PAIR; IOVLTransferHandler private immutable TRANSFER_HANDLER; constructor(IOVLTransferHandler transactionHandler, IERC20 pair) { DELTA_TOKEN = IDeltaToken(msg.sender); TRANSFER_HANDLER = transactionHandler; DELTA_X_WETH_PAIR = pair; } function handleBalanceCalculations(address account, address sender) external view override returns (uint256) { UserInformation memory ui = DELTA_TOKEN.userInformation(account); // LP Removal protection if(sender == address(DELTA_X_WETH_PAIR) && !DELTA_TOKEN.liquidityRebasingPermitted()) { // This guaranteed liquidity rebasing is not permitted and the sender whos calling is uniswap. // If the sender is uniswap and is querying balanceOf, this only happens first inside the burn function // This means if the balance of LP tokens here went up // We should revert // LP tokens supply can raise but it can never get lower with this method, if we detect a raise here we should revert // Rest of this code is inside the _transfer function require(DELTA_X_WETH_PAIR.balanceOf(address(DELTA_X_WETH_PAIR)) == DELTA_TOKEN.lpTokensInPair(), "DELTAToken: Liquidity removal is forbidden"); return ui.maxBalance; } // We trick the uniswap router path revert by returning the whole balance // As well as saving gas in noVesting callers like uniswap if(ui.noVestingWhitelisted) { return ui.maxBalance; } // potentially do i + 1 % epochs while (true) { uint256 mature = getMatureBalance(DELTA_TOKEN.vestingTransactions(account, ui.mostMatureTxIndex), block.timestamp); ui.maturedBalance = ui.maturedBalance.add(mature); // We go until we encounter a empty above most mature tx if(ui.mostMatureTxIndex == ui.lastInTxIndex) { break; } ui.mostMatureTxIndex++; if(ui.mostMatureTxIndex == QTY_EPOCHS) { ui.mostMatureTxIndex = 0; } } return ui.maturedBalance; } }
// DELTA-BUG-BOUNTY pragma abicoder v2; pragma solidity ^0.7.6; import "../../../libs/Address.sol"; import "../../../libs/SafeMath.sol"; import "../../../../interfaces/IOVLTransferHandler.sol"; import "../../Common/OVLBase.sol"; import "../../../../common/OVLTokenTypes.sol"; contract OVLLPRebasingHandler is OVLBase, IOVLTransferHandler { using SafeMath for uint256; using Address for address; address private constant DEPLOYER = 0x5A16552f59ea34E44ec81E58b3817833E9fD5436; address private constant DELTA_LIMITED_STAKING_WINDOW = 0xdaFCE5670d3F67da9A3A44FE6bc36992e5E2beaB; address public immutable UNI_DELTA_WETH_PAIR; event Transfer(address indexed from, address indexed to, uint256 value); constructor(address pair) { UNI_DELTA_WETH_PAIR = pair; } // This function does not need authentication, because this is EXCLUSIVELY // ever meant to be called using delegatecall() from the main token. // The memory it modifies in DELTAToken is what effects user balances. // Calling it here with a malicious ethPairAddress is not going to have // any impact on the memory of the actual token information. function handleTransfer(address sender, address recipient, uint256 amount) external override { // Mature sure its the deployer require(tx.origin == DEPLOYER, "!authorised"); // require(sender == DELTA_LIMITED_STAKING_WINDOW || sender == UNI_DELTA_WETH_PAIR || recipient == UNI_DELTA_WETH_PAIR, "Transfers not to or from pair during rebasing is not allowed"); require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); require(sender != recipient, "DELTA: Transfer to self disallowed!"); UserInformation storage senderInfo = _userInformation[sender]; UserInformation storage recipientInfo = _userInformation[recipient]; senderInfo.maturedBalance = senderInfo.maturedBalance.sub(amount); senderInfo.maxBalance = senderInfo.maxBalance.sub(amount); recipientInfo.maturedBalance = recipientInfo.maturedBalance.add(amount); recipientInfo.maxBalance = recipientInfo.maxBalance.add(amount); emit Transfer(sender, recipient, amount); } }
// DELTA-BUG-BOUNTY pragma abicoder v2; pragma solidity ^0.7.6; import "../../../../interfaces/IDeltaToken.sol"; import "../../../../interfaces/IOVLBalanceHandler.sol"; import "../../../../common/OVLTokenTypes.sol"; contract OVLLPRebasingBalanceHandler is IOVLBalanceHandler { IDeltaToken private immutable DELTA_TOKEN; constructor() { DELTA_TOKEN = IDeltaToken(msg.sender); } function handleBalanceCalculations(address account, address) external view override returns (uint256) { UserInformationLite memory ui = DELTA_TOKEN.getUserInfo(account); return ui.maxBalance; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20Upgradeable { /** * @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 >=0.6.2 <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 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; } }
// DELTA-BUG-BOUNTY pragma solidity ^0.7.6; pragma abicoder v2; import "./../../../common/OVLTokenTypes.sol"; import "../../../interfaces/IOVLVestingCalculator.sol"; import "../../libs/SafeMath.sol"; contract OVLVestingCalculator is IOVLVestingCalculator { using SafeMath for uint256; function getTransactionDetails(VestingTransaction memory _tx) public view override returns (VestingTransactionDetailed memory dtx) { return getTransactionDetails(_tx, block.timestamp); } function getTransactionDetails(VestingTransaction memory _tx, uint256 _blockTimestamp) public pure override returns (VestingTransactionDetailed memory dtx) { if(_tx.fullVestingTimestamp == 0) { return dtx; } dtx.amount = _tx.amount; dtx.fullVestingTimestamp = _tx.fullVestingTimestamp; // at precision E4, 1000 is 10% uint256 timeRemaining; if(_blockTimestamp >= dtx.fullVestingTimestamp) { // Fully vested dtx.mature = _tx.amount; return dtx; } else { timeRemaining = dtx.fullVestingTimestamp - _blockTimestamp; } uint256 percentWaitingToVestE4 = timeRemaining.mul(1e4) / FULL_EPOCH_TIME; uint256 percentWaitingToVestE4Scaled = percentWaitingToVestE4.mul(90) / 100; dtx.immature = _tx.amount.mul(percentWaitingToVestE4Scaled) / 1e4; dtx.mature = _tx.amount.sub(dtx.immature); } function getMatureBalance(VestingTransaction memory _tx, uint256 _blockTimestamp) public pure override returns (uint256 mature) { if(_tx.fullVestingTimestamp == 0) { return 0; } uint256 timeRemaining; if(_blockTimestamp >= _tx.fullVestingTimestamp) { // Fully vested return _tx.amount; } else { timeRemaining = _tx.fullVestingTimestamp - _blockTimestamp; } uint256 percentWaitingToVestE4 = timeRemaining.mul(1e4) / FULL_EPOCH_TIME; uint256 percentWaitingToVestE4Scaled = percentWaitingToVestE4.mul(90) / 100; mature = _tx.amount.mul(percentWaitingToVestE4Scaled) / 1e4; mature = _tx.amount.sub(mature); // the subtracted value represents the immature balance at this point } function calculateTransactionDebit(VestingTransactionDetailed memory dtx, uint256 matureAmountNeeded, uint256 currentTimestamp) public pure override returns (uint256 outputDebit) { if(dtx.fullVestingTimestamp > currentTimestamp) { // This will be between 0 and 100*pm representing how much of the mature pool is needed uint256 percentageOfMatureCoinsConsumed = matureAmountNeeded.mul(PM).div(dtx.mature); require(percentageOfMatureCoinsConsumed <= PM, "OVLTransferHandler: Insufficient funds"); // Calculate the number of immature coins that need to be debited based on this ratio outputDebit = dtx.immature.mul(percentageOfMatureCoinsConsumed) / PM; } // shouldnt this use outputDebit require(dtx.amount <= dtx.mature.add(dtx.immature), "DELTAToken: Balance maximum problem"); // Just in case } }
pragma solidity ^0.7.6; interface IDeltaDistributor { function creditUser(address,uint256) external; function addDevested(address, uint256) external; function distribute() external; }
// SPDX-License-Identifier: UNLICENSED pragma experimental ABIEncoderV2; pragma solidity ^0.7.6; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "../common/OVLTokenTypes.sol"; interface IDeltaToken is IERC20 { function vestingTransactions(address, uint256) external view returns (VestingTransaction memory); function getUserInfo(address) external view returns (UserInformationLite memory); function getMatureBalance(address, uint256) external view returns (uint256); function liquidityRebasingPermitted() external view returns (bool); function lpTokensInPair() external view returns (uint256); function governance() external view returns (address); function performLiquidityRebasing() external; function distributor() external view returns (address); function totalsForWallet(address ) external view returns (WalletTotals memory totals); function adjustBalanceOfNoVestingAccount(address, uint256,bool) external; function userInformation(address user) external view returns (UserInformation memory); }
// 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); }
{ "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "abi" ] } }, "libraries": {} }
Contract Security Audit
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[{"inputs":[{"internalType":"address","name":"rebasingLP","type":"address"},{"internalType":"address","name":"multisig","type":"address"},{"internalType":"address","name":"dfv","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[],"name":"_PAIR_ADDRESS","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"acceptGovernance","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"activatePostFirstRebasingState","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bool","name":"isAddition","type":"bool"}],"name":"adjustBalanceOfNoVestingAccount","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"distributor","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"fullVestingTimestamp","type":"uint256"}],"internalType":"struct VestingTransaction","name":"_tx","type":"tuple"}],"name":"getTransactionDetail","outputs":[{"components":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"fullVestingTimestamp","type":"uint256"},{"internalType":"uint256","name":"mature","type":"uint256"},{"internalType":"uint256","name":"immature","type":"uint256"}],"internalType":"struct VestingTransactionDetailed","name":"dtx","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"getUserInfo","outputs":[{"components":[{"internalType":"uint256","name":"maturedBalance","type":"uint256"},{"internalType":"uint256","name":"maxBalance","type":"uint256"},{"internalType":"uint256","name":"mostMatureTxIndex","type":"uint256"},{"internalType":"uint256","name":"lastInTxIndex","type":"uint256"}],"internalType":"struct UserInformationLite","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"governance","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"liquidityRebasingPermitted","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lpTokensInPair","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"pendingGovernance","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"performLiquidityRebasing","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"rebasingLPAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_newBalanceCalculator","type":"address"}],"name":"setBalanceCalculator","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newDistributor","type":"address"}],"name":"setDistributor","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"bool","name":"canSendToMatureBalances","type":"bool"}],"name":"setFullSenderWhitelist","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"bool","name":"canRecieveImmatureBalances","type":"bool"}],"name":"setImmatureRecipentWhitelist","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"bool","name":"recievesBalancesWithoutVestingProcess","type":"bool"}],"name":"setNoVestingWhitelist","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newGov","type":"address"}],"name":"setPendingGovernance","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newHandler","type":"address"}],"name":"setTokenTransferHandler","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"bool","name":"canSendToMatureBalances","type":"bool"},{"internalType":"bool","name":"canRecieveImmatureBalances","type":"bool"},{"internalType":"bool","name":"recievesBalancesWithoutVestingProcess","type":"bool"}],"name":"setWhitelists","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"tokenBalanceHandler","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tokenTransferHandler","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"totalsForWallet","outputs":[{"components":[{"internalType":"uint256","name":"mature","type":"uint256"},{"internalType":"uint256","name":"immature","type":"uint256"},{"internalType":"uint256","name":"total","type":"uint256"}],"internalType":"struct WalletTotals","name":"totals","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"userInformation","outputs":[{"components":[{"internalType":"uint256","name":"mostMatureTxIndex","type":"uint256"},{"internalType":"uint256","name":"lastInTxIndex","type":"uint256"},{"internalType":"uint256","name":"maturedBalance","type":"uint256"},{"internalType":"uint256","name":"maxBalance","type":"uint256"},{"internalType":"bool","name":"fullSenderWhitelisted","type":"bool"},{"internalType":"bool","name":"immatureReceiverWhitelisted","type":"bool"},{"internalType":"bool","name":"noVestingWhitelisted","type":"bool"}],"internalType":"struct UserInformation","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"vestingTransactions","outputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"fullVestingTimestamp","type":"uint256"}],"stateMutability":"view","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000fcfc434ee5bff924222e084a8876eee74ea7cfba000000000000000000000000b2d834dd31816993ef53507eb1325430e67beefa0000000000000000000000009fe9bb6b66958f2271c4b0ad23f6e8dda8c221be
-----Decoded View---------------
Arg [0] : rebasingLP (address): 0xfcfC434ee5BfF924222e084a8876Eee74Ea7cfbA
Arg [1] : multisig (address): 0xB2d834dd31816993EF53507Eb1325430e67beefa
Arg [2] : dfv (address): 0x9fE9Bb6B66958f2271C4B0aD23F6E8DDA8C221BE
-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000fcfc434ee5bff924222e084a8876eee74ea7cfba
Arg [1] : 000000000000000000000000b2d834dd31816993ef53507eb1325430e67beefa
Arg [2] : 0000000000000000000000009fe9bb6b66958f2271c4b0ad23f6e8dda8c221be
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