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TokenTracker
Latest 25 from a total of 63 transactions
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Withdraw | 18516986 | 401 days ago | IN | 0 ETH | 0.01000042 | ||||
Withdraw | 17981454 | 476 days ago | IN | 0 ETH | 0.00617152 | ||||
Deposit | 17910639 | 486 days ago | IN | 0 ETH | 0.00313202 | ||||
Deposit | 17910386 | 486 days ago | IN | 0 ETH | 0.00347284 | ||||
Withdraw | 17889513 | 489 days ago | IN | 0 ETH | 0.006493 | ||||
Deposit | 17771569 | 505 days ago | IN | 0 ETH | 0.01187231 | ||||
Withdraw | 17757986 | 507 days ago | IN | 0 ETH | 0.00517379 | ||||
Withdraw | 17717299 | 513 days ago | IN | 0 ETH | 0.00355728 | ||||
Withdraw | 17716796 | 513 days ago | IN | 0 ETH | 0.003514 | ||||
Withdraw | 17652708 | 522 days ago | IN | 0 ETH | 0.00353861 | ||||
Withdraw | 17508736 | 542 days ago | IN | 0 ETH | 0.00372152 | ||||
Withdraw | 17242018 | 580 days ago | IN | 0 ETH | 0.02530185 | ||||
Deposit | 17129264 | 596 days ago | IN | 0 ETH | 0.00828956 | ||||
Withdraw | 17018074 | 612 days ago | IN | 0 ETH | 0.00507496 | ||||
Withdraw | 16915474 | 626 days ago | IN | 0 ETH | 0.00418054 | ||||
Deposit | 16850534 | 635 days ago | IN | 0 ETH | 0.00831567 | ||||
Withdraw | 16810942 | 641 days ago | IN | 0 ETH | 0.00467221 | ||||
Withdraw | 16747330 | 650 days ago | IN | 0 ETH | 0.00450629 | ||||
Withdraw | 16742565 | 650 days ago | IN | 0 ETH | 0.00798111 | ||||
Withdraw | 16740765 | 651 days ago | IN | 0 ETH | 0.00599281 | ||||
Withdraw | 16740761 | 651 days ago | IN | 0 ETH | 0.00740216 | ||||
Withdraw | 16690157 | 658 days ago | IN | 0 ETH | 0.00940026 | ||||
Deposit | 16641246 | 665 days ago | IN | 0 ETH | 0.00603297 | ||||
Deposit | 16556906 | 676 days ago | IN | 0 ETH | 0.00596115 | ||||
Withdraw | 16540436 | 679 days ago | IN | 0 ETH | 0.00417718 |
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Similar Match Source Code This contract matches the deployed Bytecode of the Source Code for Contract 0xdC5cD6bc...c2367Bfdf The constructor portion of the code might be different and could alter the actual behaviour of the contract
Contract Name:
Vyper_contract
Compiler Version
vyper:0.2.12
Contract Source Code (Vyper language format)
# @version 0.2.12 """ @title Liquidity Gauge v3 @author Curve Finance @license MIT """ from vyper.interfaces import ERC20 implements: ERC20 interface BAO20: def future_epoch_time_write() -> uint256: nonpayable def rate() -> uint256: view interface Controller: def period() -> int128: view def period_write() -> int128: nonpayable def period_timestamp(p: int128) -> uint256: view def gauge_relative_weight(addr: address, time: uint256) -> uint256: view def voting_escrow() -> address: view def checkpoint(): nonpayable def checkpoint_gauge(addr: address): nonpayable interface Minter: def token() -> address: view def controller() -> address: view def minted(user: address, gauge: address) -> uint256: view interface VotingEscrow: def user_point_epoch(addr: address) -> uint256: view def user_point_history__ts(addr: address, epoch: uint256) -> uint256: view interface ERC20Extended: def symbol() -> String[26]: view event Deposit: provider: indexed(address) value: uint256 event Withdraw: provider: indexed(address) value: uint256 event UpdateLiquidityLimit: user: address original_balance: uint256 original_supply: uint256 working_balance: uint256 working_supply: uint256 event CommitOwnership: admin: address event ApplyOwnership: admin: address event Transfer: _from: indexed(address) _to: indexed(address) _value: uint256 event Approval: _owner: indexed(address) _spender: indexed(address) _value: uint256 MAX_REWARDS: constant(uint256) = 8 TOKENLESS_PRODUCTION: constant(uint256) = 40 WEEK: constant(uint256) = 604800 CLAIM_FREQUENCY: constant(uint256) = 3600 minter: public(address) bao_token: public(address) lp_token: public(address) controller: public(address) voting_escrow: public(address) future_epoch_time: public(uint256) balanceOf: public(HashMap[address, uint256]) totalSupply: public(uint256) allowance: public(HashMap[address, HashMap[address, uint256]]) name: public(String[64]) symbol: public(String[32]) working_balances: public(HashMap[address, uint256]) working_supply: public(uint256) # The goal is to be able to calculate ∫(rate * balance / totalSupply dt) from 0 till checkpoint # All values are kept in units of being multiplied by 1e18 period: public(int128) period_timestamp: public(uint256[100000000000000000000000000000]) # 1e18 * ∫(rate(t) / totalSupply(t) dt) from 0 till checkpoint integrate_inv_supply: public(uint256[100000000000000000000000000000]) # bump epoch when rate() changes # 1e18 * ∫(rate(t) / totalSupply(t) dt) from (last_action) till checkpoint integrate_inv_supply_of: public(HashMap[address, uint256]) integrate_checkpoint_of: public(HashMap[address, uint256]) # ∫(balance * rate(t) / totalSupply(t) dt) from 0 till checkpoint # Units: rate * t = already number of coins per address to issue integrate_fraction: public(HashMap[address, uint256]) inflation_rate: public(uint256) # For tracking external rewards reward_data: uint256 reward_tokens: public(address[MAX_REWARDS]) # deposit / withdraw / claim reward_sigs: bytes32 # claimant -> default reward receiver rewards_receiver: public(HashMap[address, address]) # reward token -> integral reward_integral: public(HashMap[address, uint256]) # reward token -> claiming address -> integral reward_integral_for: public(HashMap[address, HashMap[address, uint256]]) # user -> [uint128 claimable amount][uint128 claimed amount] claim_data: HashMap[address, HashMap[address, uint256]] admin: public(address) future_admin: public(address) # Can and will be a smart contract is_killed: public(bool) @external def __init__(_lp_token: address, _minter: address, _admin: address): """ @notice Contract constructor @param _lp_token Liquidity Pool contract address @param _minter Minter contract address @param _admin Admin who can kill the gauge """ symbol: String[26] = ERC20Extended(_lp_token).symbol() self.name = concat("Bao.finance ", symbol, " Gauge Deposit") self.symbol = concat(symbol, "-gauge") bao_token: address = Minter(_minter).token() controller: address = Minter(_minter).controller() self.lp_token = _lp_token self.minter = _minter self.admin = _admin self.bao_token = bao_token self.controller = controller self.voting_escrow = Controller(controller).voting_escrow() self.period_timestamp[0] = block.timestamp self.inflation_rate = BAO20(bao_token).rate() self.future_epoch_time = BAO20(bao_token).future_epoch_time_write() @view @external def decimals() -> uint256: """ @notice Get the number of decimals for this token @dev Implemented as a view method to reduce gas costs @return uint256 decimal places """ return 18 @view @external def integrate_checkpoint() -> uint256: return self.period_timestamp[self.period] @internal def _update_liquidity_limit(addr: address, l: uint256, L: uint256): """ @notice Calculate limits which depend on the amount of BAO token per-user. Effectively it calculates working balances to apply amplification of BAO production by BAO @param addr User address @param l User's amount of liquidity (LP tokens) @param L Total amount of liquidity (LP tokens) """ # To be called after totalSupply is updated _voting_escrow: address = self.voting_escrow voting_balance: uint256 = ERC20(_voting_escrow).balanceOf(addr) voting_total: uint256 = ERC20(_voting_escrow).totalSupply() lim: uint256 = l * TOKENLESS_PRODUCTION / 100 if voting_total > 0: lim += L * voting_balance / voting_total * (100 - TOKENLESS_PRODUCTION) / 100 lim = min(l, lim) old_bal: uint256 = self.working_balances[addr] self.working_balances[addr] = lim _working_supply: uint256 = self.working_supply + lim - old_bal self.working_supply = _working_supply log UpdateLiquidityLimit(addr, l, L, lim, _working_supply) @internal def _checkpoint_rewards( _user: address, _total_supply: uint256, _claim: bool, _receiver: address): """ @notice Claim pending rewards and checkpoint rewards for a user """ # load reward tokens and integrals into memory reward_tokens: address[MAX_REWARDS] = empty(address[MAX_REWARDS]) reward_integrals: uint256[MAX_REWARDS] = empty(uint256[MAX_REWARDS]) for i in range(MAX_REWARDS): token: address = self.reward_tokens[i] if token == ZERO_ADDRESS: break reward_tokens[i] = token reward_integrals[i] = self.reward_integral[token] reward_data: uint256 = self.reward_data if _total_supply != 0 and reward_data != 0 and block.timestamp > shift(reward_data, -160) + CLAIM_FREQUENCY: # track balances prior to claiming reward_balances: uint256[MAX_REWARDS] = empty(uint256[MAX_REWARDS]) for i in range(MAX_REWARDS): token: address = self.reward_tokens[i] if token == ZERO_ADDRESS: break reward_balances[i] = ERC20(token).balanceOf(self) # claim from reward contract reward_contract: address = convert(reward_data % 2**160, address) raw_call(reward_contract, slice(self.reward_sigs, 8, 4)) # dev: bad claim sig self.reward_data = convert(reward_contract, uint256) + shift(block.timestamp, 160) # get balances after claim and calculate new reward integrals for i in range(MAX_REWARDS): token: address = reward_tokens[i] if token == ZERO_ADDRESS: break dI: uint256 = 10**18 * (ERC20(token).balanceOf(self) - reward_balances[i]) / _total_supply if dI > 0: reward_integrals[i] += dI self.reward_integral[token] = reward_integrals[i] if _user != ZERO_ADDRESS: receiver: address = _receiver if _claim and receiver == ZERO_ADDRESS: # if receiver is not explicitly declared, check for default receiver receiver = self.rewards_receiver[_user] if receiver == ZERO_ADDRESS: # direct claims to user if no default receiver is set receiver = _user # calculate new user reward integral and transfer any owed rewards user_balance: uint256 = self.balanceOf[_user] for i in range(MAX_REWARDS): token: address = reward_tokens[i] if token == ZERO_ADDRESS: break integral: uint256 = reward_integrals[i] integral_for: uint256 = self.reward_integral_for[token][_user] new_claimable: uint256 = 0 if integral_for < integral: self.reward_integral_for[token][_user] = integral new_claimable = user_balance * (integral - integral_for) / 10**18 claim_data: uint256 = self.claim_data[_user][token] total_claimable: uint256 = shift(claim_data, -128) + new_claimable if total_claimable > 0: total_claimed: uint256 = claim_data % 2 ** 128 if _claim: response: Bytes[32] = raw_call( token, concat( method_id("transfer(address,uint256)"), convert(receiver, bytes32), convert(total_claimable, bytes32), ), max_outsize=32, ) if len(response) != 0: assert convert(response, bool) # update amount claimed (lower order bytes) self.claim_data[_user][token] = total_claimed + total_claimable elif new_claimable > 0: # update total_claimable (higher order bytes) self.claim_data[_user][token] = total_claimed + shift(total_claimable, 128) @internal def _checkpoint(addr: address): """ @notice Checkpoint for a user @param addr User address """ _period: int128 = self.period _period_time: uint256 = self.period_timestamp[_period] _integrate_inv_supply: uint256 = self.integrate_inv_supply[_period] rate: uint256 = self.inflation_rate new_rate: uint256 = rate prev_future_epoch: uint256 = self.future_epoch_time if prev_future_epoch >= _period_time: _token: address = self.bao_token self.future_epoch_time = BAO20(_token).future_epoch_time_write() new_rate = BAO20(_token).rate() self.inflation_rate = new_rate if self.is_killed: # Stop distributing inflation as soon as killed rate = 0 # Update integral of 1/supply if block.timestamp > _period_time: _working_supply: uint256 = self.working_supply _controller: address = self.controller Controller(_controller).checkpoint_gauge(self) prev_week_time: uint256 = _period_time week_time: uint256 = min((_period_time + WEEK) / WEEK * WEEK, block.timestamp) for i in range(500): dt: uint256 = week_time - prev_week_time w: uint256 = Controller(_controller).gauge_relative_weight(self, prev_week_time / WEEK * WEEK) if _working_supply > 0: if prev_future_epoch >= prev_week_time and prev_future_epoch < week_time: # If we went across one or multiple epochs, apply the rate # of the first epoch until it ends, and then the rate of # the last epoch. # If more than one epoch is crossed - the gauge gets less, # but that'd meen it wasn't called for more than 1 year _integrate_inv_supply += rate * w * (prev_future_epoch - prev_week_time) / _working_supply rate = new_rate _integrate_inv_supply += rate * w * (week_time - prev_future_epoch) / _working_supply else: _integrate_inv_supply += rate * w * dt / _working_supply # On precisions of the calculation # rate ~= 10e18 # last_weight > 0.01 * 1e18 = 1e16 (if pool weight is 1%) # _working_supply ~= TVL * 1e18 ~= 1e26 ($100M for example) # The largest loss is at dt = 1 # Loss is 1e-9 - acceptable if week_time == block.timestamp: break prev_week_time = week_time week_time = min(week_time + WEEK, block.timestamp) _period += 1 self.period = _period self.period_timestamp[_period] = block.timestamp self.integrate_inv_supply[_period] = _integrate_inv_supply # Update user-specific integrals _working_balance: uint256 = self.working_balances[addr] self.integrate_fraction[addr] += _working_balance * (_integrate_inv_supply - self.integrate_inv_supply_of[addr]) / 10 ** 18 self.integrate_inv_supply_of[addr] = _integrate_inv_supply self.integrate_checkpoint_of[addr] = block.timestamp @external def user_checkpoint(addr: address) -> bool: """ @notice Record a checkpoint for `addr` @param addr User address @return bool success """ assert (msg.sender == addr) or (msg.sender == self.minter) # dev: unauthorized self._checkpoint(addr) self._update_liquidity_limit(addr, self.balanceOf[addr], self.totalSupply) return True @external def claimable_tokens(addr: address) -> uint256: """ @notice Get the number of claimable tokens per user @dev This function should be manually changed to "view" in the ABI @return uint256 number of claimable tokens per user """ self._checkpoint(addr) return self.integrate_fraction[addr] - Minter(self.minter).minted(addr, self) @view @external def reward_contract() -> address: """ @notice Address of the reward contract providing non-BAO incentives for this gauge @dev Returns `ZERO_ADDRESS` if there is no reward contract active """ return convert(self.reward_data % 2**160, address) @view @external def last_claim() -> uint256: """ @notice Epoch timestamp of the last call to claim from `reward_contract` @dev Rewards are claimed at most once per hour in order to reduce gas costs """ return shift(self.reward_data, -160) @view @external def claimed_reward(_addr: address, _token: address) -> uint256: """ @notice Get the number of already-claimed reward tokens for a user @param _addr Account to get reward amount for @param _token Token to get reward amount for @return uint256 Total amount of `_token` already claimed by `_addr` """ return self.claim_data[_addr][_token] % 2**128 @view @external def claimable_reward(_addr: address, _token: address) -> uint256: """ @notice Get the number of claimable reward tokens for a user @dev This call does not consider pending claimable amount in `reward_contract`. Off-chain callers should instead use `claimable_rewards_write` as a view method. @param _addr Account to get reward amount for @param _token Token to get reward amount for @return uint256 Claimable reward token amount """ return shift(self.claim_data[_addr][_token], -128) @external @nonreentrant('lock') def claimable_reward_write(_addr: address, _token: address) -> uint256: """ @notice Get the number of claimable reward tokens for a user @dev This function should be manually changed to "view" in the ABI Calling it via a transaction will claim available reward tokens @param _addr Account to get reward amount for @param _token Token to get reward amount for @return uint256 Claimable reward token amount """ if self.reward_tokens[0] != ZERO_ADDRESS: self._checkpoint_rewards(_addr, self.totalSupply, False, ZERO_ADDRESS) return shift(self.claim_data[_addr][_token], -128) @external def set_rewards_receiver(_receiver: address): """ @notice Set the default reward receiver for the caller. @dev When set to ZERO_ADDRESS, rewards are sent to the caller @param _receiver Receiver address for any rewards claimed via `claim_rewards` """ self.rewards_receiver[msg.sender] = _receiver @external @nonreentrant('lock') def claim_rewards(_addr: address = msg.sender, _receiver: address = ZERO_ADDRESS): """ @notice Claim available reward tokens for `_addr` @param _addr Address to claim for @param _receiver Address to transfer rewards to - if set to ZERO_ADDRESS, uses the default reward receiver for the caller """ if _receiver != ZERO_ADDRESS: assert _addr == msg.sender # dev: cannot redirect when claiming for another user self._checkpoint_rewards(_addr, self.totalSupply, True, _receiver) @external def kick(addr: address): """ @notice Kick `addr` for abusing their boost @dev Only if either they had another voting event, or their voting escrow lock expired @param addr Address to kick """ _voting_escrow: address = self.voting_escrow t_last: uint256 = self.integrate_checkpoint_of[addr] t_ve: uint256 = VotingEscrow(_voting_escrow).user_point_history__ts( addr, VotingEscrow(_voting_escrow).user_point_epoch(addr) ) _balance: uint256 = self.balanceOf[addr] assert ERC20(_voting_escrow).balanceOf(addr) == 0 or t_ve > t_last # dev: kick not allowed assert self.working_balances[addr] > _balance * TOKENLESS_PRODUCTION / 100 # dev: kick not needed self._checkpoint(addr) self._update_liquidity_limit(addr, self.balanceOf[addr], self.totalSupply) @external @nonreentrant('lock') def deposit(_value: uint256, _addr: address = msg.sender, _claim_rewards: bool = False): """ @notice Deposit `_value` LP tokens @dev Depositting also claims pending reward tokens @param _value Number of tokens to deposit @param _addr Address to deposit for """ self._checkpoint(_addr) if _value != 0: is_rewards: bool = self.reward_tokens[0] != ZERO_ADDRESS total_supply: uint256 = self.totalSupply if is_rewards: self._checkpoint_rewards(_addr, total_supply, _claim_rewards, ZERO_ADDRESS) total_supply += _value new_balance: uint256 = self.balanceOf[_addr] + _value self.balanceOf[_addr] = new_balance self.totalSupply = total_supply self._update_liquidity_limit(_addr, new_balance, total_supply) ERC20(self.lp_token).transferFrom(msg.sender, self, _value) if is_rewards: reward_data: uint256 = self.reward_data if reward_data > 0: deposit_sig: Bytes[4] = slice(self.reward_sigs, 0, 4) if convert(deposit_sig, uint256) != 0: raw_call( convert(reward_data % 2**160, address), concat(deposit_sig, convert(_value, bytes32)) ) log Deposit(_addr, _value) log Transfer(ZERO_ADDRESS, _addr, _value) @external @nonreentrant('lock') def withdraw(_value: uint256, _claim_rewards: bool = False): """ @notice Withdraw `_value` LP tokens @dev Withdrawing also claims pending reward tokens @param _value Number of tokens to withdraw """ self._checkpoint(msg.sender) if _value != 0: is_rewards: bool = self.reward_tokens[0] != ZERO_ADDRESS total_supply: uint256 = self.totalSupply if is_rewards: self._checkpoint_rewards(msg.sender, total_supply, _claim_rewards, ZERO_ADDRESS) total_supply -= _value new_balance: uint256 = self.balanceOf[msg.sender] - _value self.balanceOf[msg.sender] = new_balance self.totalSupply = total_supply self._update_liquidity_limit(msg.sender, new_balance, total_supply) if is_rewards: reward_data: uint256 = self.reward_data if reward_data > 0: withdraw_sig: Bytes[4] = slice(self.reward_sigs, 4, 4) if convert(withdraw_sig, uint256) != 0: raw_call( convert(reward_data % 2**160, address), concat(withdraw_sig, convert(_value, bytes32)) ) ERC20(self.lp_token).transfer(msg.sender, _value) log Withdraw(msg.sender, _value) log Transfer(msg.sender, ZERO_ADDRESS, _value) @internal def _transfer(_from: address, _to: address, _value: uint256): self._checkpoint(_from) self._checkpoint(_to) if _value != 0: total_supply: uint256 = self.totalSupply is_rewards: bool = self.reward_tokens[0] != ZERO_ADDRESS if is_rewards: self._checkpoint_rewards(_from, total_supply, False, ZERO_ADDRESS) new_balance: uint256 = self.balanceOf[_from] - _value self.balanceOf[_from] = new_balance self._update_liquidity_limit(_from, new_balance, total_supply) if is_rewards: self._checkpoint_rewards(_to, total_supply, False, ZERO_ADDRESS) new_balance = self.balanceOf[_to] + _value self.balanceOf[_to] = new_balance self._update_liquidity_limit(_to, new_balance, total_supply) log Transfer(_from, _to, _value) @external @nonreentrant('lock') def transfer(_to : address, _value : uint256) -> bool: """ @notice Transfer token for a specified address @dev Transferring claims pending reward tokens for the sender and receiver @param _to The address to transfer to. @param _value The amount to be transferred. """ self._transfer(msg.sender, _to, _value) return True @external @nonreentrant('lock') def transferFrom(_from : address, _to : address, _value : uint256) -> bool: """ @notice Transfer tokens from one address to another. @dev Transferring claims pending reward tokens for the sender and receiver @param _from address The address which you want to send tokens from @param _to address The address which you want to transfer to @param _value uint256 the amount of tokens to be transferred """ _allowance: uint256 = self.allowance[_from][msg.sender] if _allowance != MAX_UINT256: self.allowance[_from][msg.sender] = _allowance - _value self._transfer(_from, _to, _value) return True @external def approve(_spender : address, _value : uint256) -> bool: """ @notice Approve the passed address to transfer the specified amount of tokens on behalf of msg.sender @dev Beware that changing an allowance via this method brings the risk that someone may use both the old and new allowance by unfortunate transaction ordering. This may be mitigated with the use of {incraseAllowance} and {decreaseAllowance}. https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 @param _spender The address which will transfer the funds @param _value The amount of tokens that may be transferred @return bool success """ self.allowance[msg.sender][_spender] = _value log Approval(msg.sender, _spender, _value) return True @external def increaseAllowance(_spender: address, _added_value: uint256) -> bool: """ @notice Increase the allowance granted to `_spender` by the caller @dev This is alternative to {approve} that can be used as a mitigation for the potential race condition @param _spender The address which will transfer the funds @param _added_value The amount of to increase the allowance @return bool success """ allowance: uint256 = self.allowance[msg.sender][_spender] + _added_value self.allowance[msg.sender][_spender] = allowance log Approval(msg.sender, _spender, allowance) return True @external def decreaseAllowance(_spender: address, _subtracted_value: uint256) -> bool: """ @notice Decrease the allowance granted to `_spender` by the caller @dev This is alternative to {approve} that can be used as a mitigation for the potential race condition @param _spender The address which will transfer the funds @param _subtracted_value The amount of to decrease the allowance @return bool success """ allowance: uint256 = self.allowance[msg.sender][_spender] - _subtracted_value self.allowance[msg.sender][_spender] = allowance log Approval(msg.sender, _spender, allowance) return True @external @nonreentrant('lock') def set_rewards(_reward_contract: address, _sigs: bytes32, _reward_tokens: address[MAX_REWARDS]): """ @notice Set the active reward contract @dev A reward contract cannot be set while this contract has no deposits @param _reward_contract Reward contract address. Set to ZERO_ADDRESS to disable staking. @param _sigs Four byte selectors for staking, withdrawing and claiming, right padded with zero bytes. If the reward contract can be claimed from but does not require staking, the staking and withdraw selectors should be set to 0x00 @param _reward_tokens List of claimable reward tokens. New reward tokens may be added but they cannot be removed. When calling this function to unset or modify a reward contract, this array must begin with the already-set reward token addresses. """ assert msg.sender == self.admin lp_token: address = self.lp_token current_reward_contract: address = convert(self.reward_data % 2**160, address) total_supply: uint256 = self.totalSupply if self.reward_tokens[0] != ZERO_ADDRESS: self._checkpoint_rewards(ZERO_ADDRESS, total_supply, False, ZERO_ADDRESS) if current_reward_contract != ZERO_ADDRESS: withdraw_sig: Bytes[4] = slice(self.reward_sigs, 4, 4) if convert(withdraw_sig, uint256) != 0: if total_supply != 0: raw_call( current_reward_contract, concat(withdraw_sig, convert(total_supply, bytes32)) ) ERC20(lp_token).approve(current_reward_contract, 0) if _reward_contract != ZERO_ADDRESS: assert _reward_tokens[0] != ZERO_ADDRESS # dev: no reward token assert _reward_contract.is_contract # dev: not a contract deposit_sig: Bytes[4] = slice(_sigs, 0, 4) withdraw_sig: Bytes[4] = slice(_sigs, 4, 4) if convert(deposit_sig, uint256) != 0: # need a non-zero total supply to verify the sigs assert total_supply != 0 # dev: zero total supply ERC20(lp_token).approve(_reward_contract, MAX_UINT256) # it would be Very Bad if we get the signatures wrong here, so # we do a test deposit and withdrawal prior to setting them raw_call( _reward_contract, concat(deposit_sig, convert(total_supply, bytes32)) ) # dev: failed deposit assert ERC20(lp_token).balanceOf(self) == 0 raw_call( _reward_contract, concat(withdraw_sig, convert(total_supply, bytes32)) ) # dev: failed withdraw assert ERC20(lp_token).balanceOf(self) == total_supply # deposit and withdraw are good, time to make the actual deposit raw_call( _reward_contract, concat(deposit_sig, convert(total_supply, bytes32)) ) else: assert convert(withdraw_sig, uint256) == 0 # dev: withdraw without deposit self.reward_data = convert(_reward_contract, uint256) self.reward_sigs = _sigs for i in range(MAX_REWARDS): current_token: address = self.reward_tokens[i] new_token: address = _reward_tokens[i] if current_token != ZERO_ADDRESS: assert current_token == new_token # dev: cannot modify existing reward token elif new_token != ZERO_ADDRESS: # store new reward token self.reward_tokens[i] = new_token else: break if _reward_contract != ZERO_ADDRESS: # do an initial checkpoint to verify that claims are working self._checkpoint_rewards(ZERO_ADDRESS, total_supply, False, ZERO_ADDRESS) @external def set_killed(_is_killed: bool): """ @notice Set the killed status for this contract @dev When killed, the gauge always yields a rate of 0 and so cannot mint BAO @param _is_killed Killed status to set """ assert msg.sender == self.admin self.is_killed = _is_killed @external def commit_transfer_ownership(addr: address): """ @notice Transfer ownership of GaugeController to `addr` @param addr Address to have ownership transferred to """ assert msg.sender == self.admin # dev: admin only self.future_admin = addr log CommitOwnership(addr) @external def accept_transfer_ownership(): """ @notice Accept a pending ownership transfer """ _admin: address = self.future_admin assert msg.sender == _admin # dev: future admin only self.admin = _admin log ApplyOwnership(_admin)
Contract Security Audit
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Deployed Bytecode
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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.