// Contract address: 0x137f0a82473df04cd601b20c9943d89cdd592fd6 // Contract name: WebcoinCrowdsale // Etherscan link: https://etherscan.io/address/0x137f0a82473df04cd601b20c9943d89cdd592fd6#code pragma solidity ^0.4.18; // File: contracts/Vault.sol interface Vault { function sendFunds() payable public returns (bool); event Transfer(address beneficiary, uint256 amountWei); } // File: zeppelin-solidity/contracts/ownership/Ownable.sol /** * @title Ownable * @dev The Ownable contract has an owner address, and provides basic authorization control * functions, this simplifies the implementation of "user permissions". */ contract Ownable { address public owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. */ function Ownable() public { owner = msg.sender; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == owner); _; } /** * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param newOwner The address to transfer ownership to. */ function transferOwnership(address newOwner) public onlyOwner { require(newOwner != address(0)); OwnershipTransferred(owner, newOwner); owner = newOwner; } } // File: zeppelin-solidity/contracts/math/SafeMath.sol /** * @title SafeMath * @dev Math operations with safety checks that throw on error */ library SafeMath { /** * @dev Multiplies two numbers, throws on overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; assert(c / a == b); return c; } /** * @dev Integer division of two numbers, truncating the quotient. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Substracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend). */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } /** * @dev Adds two numbers, throws on overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } // File: zeppelin-solidity/contracts/token/ERC20/ERC20Basic.sol /** * @title ERC20Basic * @dev Simpler version of ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/179 */ contract ERC20Basic { function totalSupply() public view returns (uint256); function balanceOf(address who) public view returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } // File: zeppelin-solidity/contracts/token/ERC20/BasicToken.sol /** * @title Basic token * @dev Basic version of StandardToken, with no allowances. */ contract BasicToken is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) balances; uint256 totalSupply_; /** * @dev total number of tokens in existence */ function totalSupply() public view returns (uint256) { return totalSupply_; } /** * @dev transfer token for a specified address * @param _to The address to transfer to. * @param _value The amount to be transferred. */ function transfer(address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[msg.sender]); // SafeMath.sub will throw if there is not enough balance. balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); Transfer(msg.sender, _to, _value); return true; } /** * @dev Gets the balance of the specified address. * @param _owner The address to query the the balance of. * @return An uint256 representing the amount owned by the passed address. */ function balanceOf(address _owner) public view returns (uint256 balance) { return balances[_owner]; } } // File: zeppelin-solidity/contracts/token/ERC20/ERC20.sol /** * @title ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/20 */ contract ERC20 is ERC20Basic { function allowance(address owner, address spender) public view returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval(address indexed owner, address indexed spender, uint256 value); } // File: zeppelin-solidity/contracts/token/ERC20/StandardToken.sol /** * @title Standard ERC20 token * * @dev Implementation of the basic standard token. * @dev https://github.com/ethereum/EIPs/issues/20 * @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol */ contract StandardToken is ERC20, BasicToken { mapping (address => mapping (address => uint256)) internal allowed; /** * @dev Transfer tokens from one address to another * @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 */ function transferFrom(address _from, address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[_from]); require(_value <= allowed[_from][msg.sender]); balances[_from] = balances[_from].sub(_value); balances[_to] = balances[_to].add(_value); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value); Transfer(_from, _to, _value); return true; } /** * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender. * * 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 * @param _spender The address which will spend the funds. * @param _value The amount of tokens to be spent. */ function approve(address _spender, uint256 _value) public returns (bool) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); return true; } /** * @dev Function to check the amount of tokens that an owner allowed to a spender. * @param _owner address The address which owns the funds. * @param _spender address The address which will spend the funds. * @return A uint256 specifying the amount of tokens still available for the spender. */ function allowance(address _owner, address _spender) public view returns (uint256) { return allowed[_owner][_spender]; } /** * @dev Increase the amount of tokens that an owner allowed to a spender. * * approve should be called when allowed[_spender] == 0. To increment * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _addedValue The amount of tokens to increase the allowance by. */ function increaseApproval(address _spender, uint _addedValue) public returns (bool) { allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue); Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } /** * @dev Decrease the amount of tokens that an owner allowed to a spender. * * approve should be called when allowed[_spender] == 0. To decrement * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _subtractedValue The amount of tokens to decrease the allowance by. */ function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) { uint oldValue = allowed[msg.sender][_spender]; if (_subtractedValue > oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } // File: zeppelin-solidity/contracts/token/ERC20/MintableToken.sol /** * @title Mintable token * @dev Simple ERC20 Token example, with mintable token creation * @dev Issue: * https://github.com/OpenZeppelin/zeppelin-solidity/issues/120 * Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol */ contract MintableToken is StandardToken, Ownable { event Mint(address indexed to, uint256 amount); event MintFinished(); bool public mintingFinished = false; modifier canMint() { require(!mintingFinished); _; } /** * @dev Function to mint tokens * @param _to The address that will receive the minted tokens. * @param _amount The amount of tokens to mint. * @return A boolean that indicates if the operation was successful. */ function mint(address _to, uint256 _amount) onlyOwner canMint public returns (bool) { totalSupply_ = totalSupply_.add(_amount); balances[_to] = balances[_to].add(_amount); Mint(_to, _amount); Transfer(address(0), _to, _amount); return true; } /** * @dev Function to stop minting new tokens. * @return True if the operation was successful. */ function finishMinting() onlyOwner canMint public returns (bool) { mintingFinished = true; MintFinished(); return true; } } // File: zeppelin-solidity/contracts/token/ERC20/CappedToken.sol /** * @title Capped token * @dev Mintable token with a token cap. */ contract CappedToken is MintableToken { uint256 public cap; function CappedToken(uint256 _cap) public { require(_cap > 0); cap = _cap; } /** * @dev Function to mint tokens * @param _to The address that will receive the minted tokens. * @param _amount The amount of tokens to mint. * @return A boolean that indicates if the operation was successful. */ function mint(address _to, uint256 _amount) onlyOwner canMint public returns (bool) { require(totalSupply_.add(_amount) <= cap); return super.mint(_to, _amount); } } // File: contracts/WebcoinToken.sol contract WebcoinToken is CappedToken { string constant public name = "Webcoin"; string constant public symbol = "WEB"; uint8 constant public decimals = 18; address private miningWallet; function WebcoinToken(uint256 _cap, address[] _wallets) public CappedToken(_cap) { require(_wallets[0] != address(0) && _wallets[1] != address(0) && _wallets[2] != address(0) && _wallets[3] != address(0) && _wallets[4] != address(0) && _wallets[5] != address(0) && _wallets[6] != address(0)); uint256 mil = (10**6); uint256 teamSupply = mil.mul(5).mul(1 ether); uint256 miningSupply = mil.mul(15).mul(1 ether); uint256 marketingSupply = mil.mul(10).mul(1 ether); uint256 developmentSupply = mil.mul(10).mul(1 ether); uint256 legalSupply = mil.mul(2).mul(1 ether); uint256 functionalCostsSupply = mil.mul(2).mul(1 ether); uint256 earlyAdoptersSupply = mil.mul(1).mul(1 ether); miningWallet = _wallets[1]; mint(_wallets[0], teamSupply); mint(_wallets[1], miningSupply); mint(_wallets[2], marketingSupply); mint(_wallets[3], developmentSupply); mint(_wallets[4], legalSupply); mint(_wallets[5], functionalCostsSupply); mint(_wallets[6], earlyAdoptersSupply); } function finishMinting() onlyOwner canMint public returns (bool) { mint(miningWallet, cap.sub(totalSupply())); return super.finishMinting(); } } // File: zeppelin-solidity/contracts/crowdsale/Crowdsale.sol /** * @title Crowdsale * @dev Crowdsale is a base contract for managing a token crowdsale, * allowing investors to purchase tokens with ether. This contract implements * such functionality in its most fundamental form and can be extended to provide additional * functionality and/or custom behavior. * The external interface represents the basic interface for purchasing tokens, and conform * the base architecture for crowdsales. They are *not* intended to be modified / overriden. * The internal interface conforms the extensible and modifiable surface of crowdsales. Override * the methods to add functionality. Consider using 'super' where appropiate to concatenate * behavior. */ contract Crowdsale { using SafeMath for uint256; // The token being sold ERC20 public token; // Address where funds are collected address public wallet; // How many token units a buyer gets per wei uint256 public rate; // Amount of wei raised uint256 public weiRaised; /** * Event for token purchase logging * @param purchaser who paid for the tokens * @param beneficiary who got the tokens * @param value weis paid for purchase * @param amount amount of tokens purchased */ event TokenPurchase(address indexed purchaser, address indexed beneficiary, uint256 value, uint256 amount); /** * @param _rate Number of token units a buyer gets per wei * @param _wallet Address where collected funds will be forwarded to * @param _token Address of the token being sold */ function Crowdsale(uint256 _rate, address _wallet, ERC20 _token) public { require(_rate > 0); require(_wallet != address(0)); require(_token != address(0)); rate = _rate; wallet = _wallet; token = _token; } // ----------------------------------------- // Crowdsale external interface // ----------------------------------------- /** * @dev fallback function ***DO NOT OVERRIDE*** */ function () external payable { buyTokens(msg.sender); } /** * @dev low level token purchase ***DO NOT OVERRIDE*** * @param _beneficiary Address performing the token purchase */ function buyTokens(address _beneficiary) public payable { uint256 weiAmount = msg.value; _preValidatePurchase(_beneficiary, weiAmount); // calculate token amount to be created uint256 tokens = _getTokenAmount(weiAmount); // update state weiRaised = weiRaised.add(weiAmount); _processPurchase(_beneficiary, tokens); TokenPurchase(msg.sender, _beneficiary, weiAmount, tokens); _updatePurchasingState(_beneficiary, weiAmount); _forwardFunds(); _postValidatePurchase(_beneficiary, weiAmount); } // ----------------------------------------- // Internal interface (extensible) // ----------------------------------------- /** * @dev Validation of an incoming purchase. Use require statemens to revert state when conditions are not met. Use super to concatenate validations. * @param _beneficiary Address performing the token purchase * @param _weiAmount Value in wei involved in the purchase */ function _preValidatePurchase(address _beneficiary, uint256 _weiAmount) internal { require(_beneficiary != address(0)); require(_weiAmount != 0); } /** * @dev Validation of an executed purchase. Observe state and use revert statements to undo rollback when valid conditions are not met. * @param _beneficiary Address performing the token purchase * @param _weiAmount Value in wei involved in the purchase */ function _postValidatePurchase(address _beneficiary, uint256 _weiAmount) internal { // optional override } /** * @dev Source of tokens. Override this method to modify the way in which the crowdsale ultimately gets and sends its tokens. * @param _beneficiary Address performing the token purchase * @param _tokenAmount Number of tokens to be emitted */ function _deliverTokens(address _beneficiary, uint256 _tokenAmount) internal { token.transfer(_beneficiary, _tokenAmount); } /** * @dev Executed when a purchase has been validated and is ready to be executed. Not necessarily emits/sends tokens. * @param _beneficiary Address receiving the tokens * @param _tokenAmount Number of tokens to be purchased */ function _processPurchase(address _beneficiary, uint256 _tokenAmount) internal { _deliverTokens(_beneficiary, _tokenAmount); } /** * @dev Override for extensions that require an internal state to check for validity (current user contributions, etc.) * @param _beneficiary Address receiving the tokens * @param _weiAmount Value in wei involved in the purchase */ function _updatePurchasingState(address _beneficiary, uint256 _weiAmount) internal { // optional override } /** * @dev Override to extend the way in which ether is converted to tokens. * @param _weiAmount Value in wei to be converted into tokens * @return Number of tokens that can be purchased with the specified _weiAmount */ function _getTokenAmount(uint256 _weiAmount) internal view returns (uint256) { return _weiAmount.mul(rate); } /** * @dev Determines how ETH is stored/forwarded on purchases. */ function _forwardFunds() internal { wallet.transfer(msg.value); } } // File: zeppelin-solidity/contracts/crowdsale/validation/TimedCrowdsale.sol /** * @title TimedCrowdsale * @dev Crowdsale accepting contributions only within a time frame. */ contract TimedCrowdsale is Crowdsale { using SafeMath for uint256; uint256 public openingTime; uint256 public closingTime; /** * @dev Reverts if not in crowdsale time range. */ modifier onlyWhileOpen { require(now >= openingTime && now <= closingTime); _; } /** * @dev Constructor, takes crowdsale opening and closing times. * @param _openingTime Crowdsale opening time * @param _closingTime Crowdsale closing time */ function TimedCrowdsale(uint256 _openingTime, uint256 _closingTime) public { require(_openingTime >= now); require(_closingTime >= _openingTime); openingTime = _openingTime; closingTime = _closingTime; } /** * @dev Checks whether the period in which the crowdsale is open has already elapsed. * @return Whether crowdsale period has elapsed */ function hasClosed() public view returns (bool) { return now > closingTime; } /** * @dev Extend parent behavior requiring to be within contributing period * @param _beneficiary Token purchaser * @param _weiAmount Amount of wei contributed */ function _preValidatePurchase(address _beneficiary, uint256 _weiAmount) internal onlyWhileOpen { super._preValidatePurchase(_beneficiary, _weiAmount); } } // File: zeppelin-solidity/contracts/crowdsale/distribution/FinalizableCrowdsale.sol /** * @title FinalizableCrowdsale * @dev Extension of Crowdsale where an owner can do extra work * after finishing. */ contract FinalizableCrowdsale is TimedCrowdsale, Ownable { using SafeMath for uint256; bool public isFinalized = false; event Finalized(); /** * @dev Must be called after crowdsale ends, to do some extra finalization * work. Calls the contract's finalization function. */ function finalize() onlyOwner public { require(!isFinalized); require(hasClosed()); finalization(); Finalized(); isFinalized = true; } /** * @dev Can be overridden to add finalization logic. The overriding function * should call super.finalization() to ensure the chain of finalization is * executed entirely. */ function finalization() internal { } } // File: zeppelin-solidity/contracts/crowdsale/validation/CappedCrowdsale.sol /** * @title CappedCrowdsale * @dev Crowdsale with a limit for total contributions. */ contract CappedCrowdsale is Crowdsale { using SafeMath for uint256; uint256 public cap; /** * @dev Constructor, takes maximum amount of wei accepted in the crowdsale. * @param _cap Max amount of wei to be contributed */ function CappedCrowdsale(uint256 _cap) public { require(_cap > 0); cap = _cap; } /** * @dev Checks whether the cap has been reached. * @return Whether the cap was reached */ function capReached() public view returns (bool) { return weiRaised >= cap; } /** * @dev Extend parent behavior requiring purchase to respect the funding cap. * @param _beneficiary Token purchaser * @param _weiAmount Amount of wei contributed */ function _preValidatePurchase(address _beneficiary, uint256 _weiAmount) internal { super._preValidatePurchase(_beneficiary, _weiAmount); require(weiRaised.add(_weiAmount) <= cap); } } // File: zeppelin-solidity/contracts/lifecycle/Pausable.sol /** * @title Pausable * @dev Base contract which allows children to implement an emergency stop mechanism. */ contract Pausable is Ownable { event Pause(); event Unpause(); bool public paused = false; /** * @dev Modifier to make a function callable only when the contract is not paused. */ modifier whenNotPaused() { require(!paused); _; } /** * @dev Modifier to make a function callable only when the contract is paused. */ modifier whenPaused() { require(paused); _; } /** * @dev called by the owner to pause, triggers stopped state */ function pause() onlyOwner whenNotPaused public { paused = true; Pause(); } /** * @dev called by the owner to unpause, returns to normal state */ function unpause() onlyOwner whenPaused public { paused = false; Unpause(); } } // File: contracts/WebcoinCrowdsale.sol /** * @title SampleCrowdsale * CappedCrowdsale - sets a max boundary for raised funds * * After adding multiple features it's good practice to run integration tests * to ensure that subcontracts works together as intended. */ contract WebcoinCrowdsale is CappedCrowdsale, TimedCrowdsale, FinalizableCrowdsale, Pausable { Vault public vaultWallet; WebcoinToken token; address[] wallets; uint256[] rates; uint256 public softCap; uint256 public initialSupply = 0; function WebcoinCrowdsale(uint256 _openingTime, uint256 _closingTime, uint256[] _rates, uint256 _softCap, uint256 _cap, address _vaultAddress, address[] _wallets, ERC20 _token) public CappedCrowdsale(_cap) TimedCrowdsale(_openingTime, _closingTime) FinalizableCrowdsale() Crowdsale(_rates[0], _wallets[0], _token) { require(_softCap > 0); require(_wallets[1] != address(0) && _wallets[2] != address(0) && _wallets[3] != address(0) && _vaultAddress != address(0)); require(_rates[1] > 0 && _rates[2] > 0 && _rates[3] > 0 && _rates[4] > 0 && _rates[5] > 0 && _rates[6] > 0 && _rates[7] > 0); wallets = _wallets; vaultWallet = Vault(_vaultAddress); rates = _rates; token = WebcoinToken(_token); softCap = _softCap; initialSupply = token.totalSupply(); } function _preValidatePurchase(address _beneficiary, uint256 _weiAmount) internal { require(_weiAmount <= 1000 ether); super._preValidatePurchase(_beneficiary, _weiAmount); } function _deliverTokens(address _beneficiary, uint256 _tokenAmount) internal { token.mint(_beneficiary, _tokenAmount); } function _updatePurchasingState(address _beneficiary, uint256 _weiAmount) internal { uint256 crowdsaleSupply = token.totalSupply().sub(initialSupply); uint256 mil = (10**6) * 1 ether; if (crowdsaleSupply >= mil.mul(2) && crowdsaleSupply < mil.mul(5)) { rate = rates[1]; } else if (crowdsaleSupply >= mil.mul(5) && crowdsaleSupply < mil.mul(11)) { rate = rates[2]; } else if (crowdsaleSupply >= mil.mul(11) && crowdsaleSupply < mil.mul(16)) { rate = rates[3]; } else if (crowdsaleSupply >= mil.mul(16) && crowdsaleSupply < mil.mul(20)) { rate = rates[4]; } else if (crowdsaleSupply >= mil.mul(20) && crowdsaleSupply < mil.mul(22)) { rate = rates[5]; } else if (crowdsaleSupply >= mil.mul(22) && crowdsaleSupply < mil.mul(24)) { rate = rates[6]; } else if (crowdsaleSupply >= mil.mul(24)) { rate = rates[7]; } } function ceil(uint256 a, uint256 m) private pure returns (uint256) { return ((a + m - 1) / m) * m; } function _forwardFunds() internal { if (softCapReached()) { uint256 totalInvestment = msg.value; uint256 miningFund = totalInvestment.mul(10).div(100); uint256 teamFund = totalInvestment.mul(15).div(100); uint256 devFund = totalInvestment.mul(35).div(100); uint256 marketingFund = totalInvestment.mul(40).div(100); require(wallets[0].send(miningFund) && wallets[1].send(teamFund) && wallets[2].send(devFund) && wallets[3].send(marketingFund)); } else { require(vaultWallet.sendFunds.value(msg.value)()); } } function softCapReached() public view returns (bool) { return weiRaised > softCap; } function capReached() public view returns (bool) { return ceil(token.totalSupply(),1 ether).sub(initialSupply) >= cap; } function hasClosed() public view returns (bool) { return capReached() || super.hasClosed(); } function pause() onlyOwner whenNotPaused public { token.transferOwnership(owner); super.pause(); } function finalization() internal { token.finishMinting(); token.transferOwnership(owner); } }
v0.4.18