pragma solidity ^0.4.23; /** * @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 a / b; } /** * @dev Subtracts 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; } } /** * @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. */ constructor() 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)); emit OwnershipTransferred(owner, newOwner); owner = newOwner; } } /** * @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); } /** * @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); } /** * @title Basic token * @dev Basic version of StandardToken, with no allowances. */ contract BasicToken is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) balances; uint256 public 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)); balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); emit 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]; } } /** * @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)) public 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); emit 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; emit 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); emit 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); } emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } /** * @title CoinnupCrowdsaleToken * @dev ERC20-compliant Token that can be minted. */ contract CoinnupToken is StandardToken, Ownable { using SafeMath for uint256; string public constant name = "Coinnup Coin"; // solium-disable-line uppercase string public constant symbol = "PMZ"; // solium-disable-line uppercase uint8 public constant decimals = 18; // solium-disable-line uppercase /// @dev store how much in eth users invested to give them a refund in case refund happens mapping ( address => uint256 ) public investments; /// @dev to have how much one user bought tokens mapping ( address => uint256 ) public tokensBought; /// @dev event when someone bought tokens by ETH event investmentReceived( address sender, uint weis, uint total ); uint256 public maxSupply = 298500000000000000000000000; uint256 public allowedToBeSold = 104475000000000000000000000; address public founder = address( 0x7c1F88AD3A467AB29db1975487A67AE5F405364D ); // pay attention for correct foudner wallet address uint256 public rate = 2800; uint256 public bonus = 30; uint256 public softCap = 1850000000000000000000; uint256 public _sold; //eth sold via payable function /// @dev in this var we store eth when someone bought tokens /// not sending it to smart contract but buying it privately uint256 public _soldOutside; //wei sold not via SC uint256 public _soldOutsidePMZ; //PMZ tokens sold not via SC bool public isPaused; struct Round { uint256 openingTime; uint256 closingTime; uint256 allocatedCoins; uint256 minPurchase; uint256 maxPurchase; uint256 soldCoins; } Round[] public rounds; /** @dev Token cunstructor */ constructor () public { require(maxSupply > 0); require(founder != address(0)); require(rate > 0); require(bonus >= 0 && bonus <= 100); // in percentage require(allowedToBeSold > 0 && allowedToBeSold < maxSupply); require(softCap > 0); for (uint8 i = 0; i < 6; i++) { rounds.push( Round(0, 0, 0, 0, 0, 0) ); } // mint tokens which initially belongs to founder uint256 _forFounder = maxSupply.sub(allowedToBeSold); mint(founder, _forFounder); // waiting for admin to set round dates // and to unpause by admin triggerICOState(true); } /// @dev in payable we shold keep only forwarding call function () public onlyWhileOpen isNotPaused payable { require(_buyTokens(msg.sender, msg.value)); } /** * @dev gets `_sender` and `_value` as input and sells tokens with bonus * throws if not enough tokens after calculation * @return isSold bool whether tokens bought */ function _buyTokens(address _sender, uint256 _value) internal isNotPaused returns (bool) { uint256 amount = _getTokenAmount(_value, bonus); uint256 amount_without_bonus = _getTokenAmount(_value, 0); uint8 _currentRound = _getCurrentRound(now); require(rounds[_currentRound].allocatedCoins >= amount + rounds[_currentRound].soldCoins); require(totalSupply_ + amount <= maxSupply); // if we have enough tokens to be minted require( rounds[_currentRound].minPurchase <= amount_without_bonus && rounds[_currentRound].maxPurchase >= amount_without_bonus ); _sold = _sold.add(_value); // in wei investments[_sender] = investments[_sender].add(_value); // in wei // minting tokens for investores // after we recorded how much he sent ether and other params mint(_sender, amount); rounds[_currentRound].soldCoins = rounds[_currentRound].soldCoins.add(amount); tokensBought[_sender] = tokensBought[_sender].add(amount); emit investmentReceived( _sender, _value, amount_without_bonus ); return true; } /// @dev system can mint tokens for users if they sent funds to BTC, LTC, etc wallets we allow function mintForInvestor(address _to, uint256 _tokens) public onlyOwner onlyWhileOpen { uint8 _round = _getCurrentRound(now); require(_round >= 0 && _round <= 5); require(_to != address(0)); // handling incorrect values from system in addresses require(_tokens >= 0); // handing incorrect values from system in tokens calculation require(rounds[_currentRound].allocatedCoins >= _tokens + rounds[_currentRound].soldCoins); uint8 _currentRound = _getCurrentRound(now); // TODO: remove isNotPaused to be able to buy while ICO is paused for private ICO - done // TODO: add var for keeping private sales in weis - done, _soldOutside // TODO: keep track of tokens sold in private ico (in PMZ tokens not in ETH), like to have the idea what was sold for advisers - _soldOutsidePMZ // minting tokens for investors mint(_to, _tokens); // _tokens in wei rounds[_currentRound].soldCoins = rounds[_currentRound].soldCoins.add(_tokens); tokensBought[_to] = tokensBought[_to].add(_tokens); // tokens in wei uint256 _soldInETH = _tokens.div( rate ); _sold = _sold.add(_tokens); // in wei _soldOutside = _soldOutside.add(_soldInETH); // eth _soldOutsidePMZ = _soldOutsidePMZ.add(_tokens); // in PMZ } /** * @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) internal { totalSupply_ = totalSupply_.add(_amount); balances[_to] = balances[_to].add(_amount); emit Transfer(address(this), _to, _amount); } /** * @dev The way in which ether is converted to tokens. * @param _weiAmount Value in wei to be converted into tokens * @param _bonus Bonus in percents * @return Number of tokens that can be purchased with the specified _weiAmount */ function _getTokenAmount(uint256 _weiAmount, uint _bonus) internal view returns (uint256) { uint256 _coins_in_wei = rate.mul(_weiAmount); uint256 _bonus_value_in_wei = 0; uint256 bonusValue = 0; _bonus_value_in_wei = (_coins_in_wei.mul(_bonus)).div(100); bonusValue = _bonus_value_in_wei; uint256 coins = _coins_in_wei; uint256 total = coins.add(bonusValue); return total; } /** * @dev sets a rate for ico rounds * @param _rate Rate for token */ function setRate(uint256 _rate) public { require(msg.sender == owner); require(_rate > 0); rate = _rate; } /// @dev get total coins sold per current round function soldPerCurrentRound() public view returns (uint256) { return rounds[_getCurrentRound(now)].soldCoins; } /// @dev pause and unpause an ICO, only sender allowed to function triggerICOState(bool state) public onlyOwner { isPaused = state; } /** * @dev changes current bonus rate * @param _bonus Bonus to change * @return bool - Changed or not */ function setBonus(uint256 _bonus) onlyOwner public { require(_bonus >= 0 && _bonus <= 100); //% bonus = _bonus; } /// @dev gets number of current round function _getCurrentRound(uint256 _time) public view returns (uint8) { for (uint8 i = 0; i < 6; i++) { if (rounds[i].openingTime < _time && rounds[i].closingTime > _time) { return i; } } return 100; // if using 6 in 5 length array it will throw } function setRoundParams( uint8 _round, uint256 _openingTime, uint256 _closingTime, uint256 _maxPurchase, uint256 _minPurchase, uint256 _allocatedCoins ) public onlyOwner { rounds[_round].openingTime = _openingTime; rounds[_round].closingTime = _closingTime; rounds[_round].maxPurchase = _maxPurchase; rounds[_round].minPurchase = _minPurchase; rounds[_round].allocatedCoins = _allocatedCoins; } /** * @dev withdrawing funds to founder's wallet * @return bool Whether success or not */ function withdraw() public { // only founder is able to withdraw funds require(msg.sender == founder); founder.transfer(address(this).balance); } /** * @dev Claims for refund if ICO finished and soft cap not reached */ function refund() public whenICOFinished capNotReached { require(investments[msg.sender] > 0); msg.sender.transfer(investments[msg.sender]); investments[msg.sender] = 0; } modifier onlyWhileOpen { uint8 _round = _getCurrentRound(now); require(_round >= 0 && _round <= 5); // we have 6 rounds, other values are invalid _; } /// @dev when ico finishes we can perform other actions modifier whenICOFinished { uint8 _round = _getCurrentRound(now); require(_round < 0 || _round > 5); // if we do not get current valid round number ICO finished _; } /// @dev _sold in weis, softCap in weis modifier capNotReached { require(softCap > _sold); _; } /// @dev if isPaused true then investments cannot be accepted modifier isNotPaused { require(!isPaused); _; } }
0.4.23