Contract 0x73779fa2df939d0e986c0c93bdd3cf8a2e6d8940

Contract Overview

Balance:
0 Ether
TxHash Block Age From To Value [TxFee]
0x22b25b38ac6ba2b612ef2474cf9b0b3c85e288690e71f08318dc3bc6ee88d636976955390 days 17 hrs ago0x4bc58769a5139ec2b76e93282ededc4cd2325853 IN  0x73779fa2df939d0e986c0c93bdd3cf8a2e6d89400.5 Ether0.00538134
0xfdd3d8cac5154b0006e2c387f1d57024360facc85574259aab00bcaaea0c2fcc976952490 days 17 hrs ago0x4bc58769a5139ec2b76e93282ededc4cd2325853 IN  0x73779fa2df939d0e986c0c93bdd3cf8a2e6d89400.5 Ether0.001201545
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Warning: The compiled contract might be susceptible to ExpExponentCleanup (medium/high-severity), EventStructWrongData (very low-severity) Solidity Compiler Bugs.

Contract Source Code Verified (Similar Match)
Note: This contract matches the deployed ByteCode of the Verified Source Code for Contract 0xbF1E27ada6B203EBa7597294A169Ff0a1B7446CC

Contract Name:
CappedSTO

Compiler Version
v0.4.24+commit.e67f0147

Optimization Enabled:
Yes

Runs (Optimizer):
200

Contract Source Code

pragma solidity ^0.4.24;

/**
 * @title Utility contract to allow pausing and unpausing of certain functions
 */
contract Pausable {

    event Pause(uint256 _timestammp);
    event Unpause(uint256 _timestamp);

    bool public paused = false;

    /**
    * @notice Modifier to make a function callable only when the contract is not paused.
    */
    modifier whenNotPaused() {
        require(!paused, "Contract is paused");
        _;
    }

    /**
    * @notice Modifier to make a function callable only when the contract is paused.
    */
    modifier whenPaused() {
        require(paused, "Contract is not paused");
        _;
    }

   /**
    * @notice Called by the owner to pause, triggers stopped state
    */
    function _pause() internal whenNotPaused {
        paused = true;
        /*solium-disable-next-line security/no-block-members*/
        emit Pause(now);
    }

    /**
    * @notice Called by the owner to unpause, returns to normal state
    */
    function _unpause() internal whenPaused {
        paused = false;
        /*solium-disable-next-line security/no-block-members*/
        emit Unpause(now);
    }

}

/**
 * @title Interface that every module contract should implement
 */
interface IModule {

    /**
     * @notice This function returns the signature of configure function
     */
    function getInitFunction() external pure returns (bytes4);

    /**
     * @notice Return the permission flags that are associated with a module
     */
    function getPermissions() external view returns(bytes32[]);

    /**
     * @notice Used to withdraw the fee by the factory owner
     */
    function takeFee(uint256 _amount) external returns(bool);

}

/**
 * @title Interface for all security tokens
 */
interface ISecurityToken {

    // Standard ERC20 interface
    function decimals() external view returns (uint8);
    function totalSupply() external view returns (uint256);
    function balanceOf(address _owner) external view returns (uint256);
    function allowance(address _owner, address _spender) external view returns (uint256);
    function transfer(address _to, uint256 _value) external returns (bool);
    function transferFrom(address _from, address _to, uint256 _value) external returns (bool);
    function approve(address _spender, uint256 _value) external returns (bool);
    function decreaseApproval(address _spender, uint _subtractedValue) external returns (bool);
    function increaseApproval(address _spender, uint _addedValue) external returns (bool);
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);

    //transfer, transferFrom must respect the result of verifyTransfer
    function verifyTransfer(address _from, address _to, uint256 _value) external returns (bool success);

    /**
     * @notice Mints new tokens and assigns them to the target _investor.
     * Can only be called by the STO attached to the token (Or by the ST owner if there's no STO attached yet)
     * @param _investor Address the tokens will be minted to
     * @param _value is the amount of tokens that will be minted to the investor
     */
    function mint(address _investor, uint256 _value) external returns (bool success);

    /**
     * @notice Mints new tokens and assigns them to the target _investor.
     * Can only be called by the STO attached to the token (Or by the ST owner if there's no STO attached yet)
     * @param _investor Address the tokens will be minted to
     * @param _value is The amount of tokens that will be minted to the investor
     * @param _data Data to indicate validation
     */
    function mintWithData(address _investor, uint256 _value, bytes _data) external returns (bool success);

    /**
     * @notice Used to burn the securityToken on behalf of someone else
     * @param _from Address for whom to burn tokens
     * @param _value No. of tokens to be burned
     * @param _data Data to indicate validation
     */
    function burnFromWithData(address _from, uint256 _value, bytes _data) external;

    /**
     * @notice Used to burn the securityToken
     * @param _value No. of tokens to be burned
     * @param _data Data to indicate validation
     */
    function burnWithData(uint256 _value, bytes _data) external;

    event Minted(address indexed _to, uint256 _value);
    event Burnt(address indexed _burner, uint256 _value);

    // Permissions this to a Permission module, which has a key of 1
    // If no Permission return false - note that IModule withPerm will allow ST owner all permissions anyway
    // this allows individual modules to override this logic if needed (to not allow ST owner all permissions)
    function checkPermission(address _delegate, address _module, bytes32 _perm) external view returns (bool);

    /**
     * @notice Returns module list for a module type
     * @param _module Address of the module
     * @return bytes32 Name
     * @return address Module address
     * @return address Module factory address
     * @return bool Module archived
     * @return uint8 Module type
     * @return uint256 Module index
     * @return uint256 Name index

     */
    function getModule(address _module) external view returns(bytes32, address, address, bool, uint8, uint256, uint256);

    /**
     * @notice Returns module list for a module name
     * @param _name Name of the module
     * @return address[] List of modules with this name
     */
    function getModulesByName(bytes32 _name) external view returns (address[]);

    /**
     * @notice Returns module list for a module type
     * @param _type Type of the module
     * @return address[] List of modules with this type
     */
    function getModulesByType(uint8 _type) external view returns (address[]);

    /**
     * @notice Queries totalSupply at a specified checkpoint
     * @param _checkpointId Checkpoint ID to query as of
     */
    function totalSupplyAt(uint256 _checkpointId) external view returns (uint256);

    /**
     * @notice Queries balance at a specified checkpoint
     * @param _investor Investor to query balance for
     * @param _checkpointId Checkpoint ID to query as of
     */
    function balanceOfAt(address _investor, uint256 _checkpointId) external view returns (uint256);

    /**
     * @notice Creates a checkpoint that can be used to query historical balances / totalSuppy
     */
    function createCheckpoint() external returns (uint256);

    /**
     * @notice Gets length of investors array
     * NB - this length may differ from investorCount if the list has not been pruned of zero-balance investors
     * @return Length
     */
    function getInvestors() external view returns (address[]);

    /**
     * @notice returns an array of investors at a given checkpoint
     * NB - this length may differ from investorCount as it contains all investors that ever held tokens
     * @param _checkpointId Checkpoint id at which investor list is to be populated
     * @return list of investors
     */
    function getInvestorsAt(uint256 _checkpointId) external view returns(address[]);

    /**
     * @notice generates subset of investors
     * NB - can be used in batches if investor list is large
     * @param _start Position of investor to start iteration from
     * @param _end Position of investor to stop iteration at
     * @return list of investors
     */
    function iterateInvestors(uint256 _start, uint256 _end) external view returns(address[]);
    
    /**
     * @notice Gets current checkpoint ID
     * @return Id
     */
    function currentCheckpointId() external view returns (uint256);

    /**
    * @notice Gets an investor at a particular index
    * @param _index Index to return address from
    * @return Investor address
    */
    function investors(uint256 _index) external view returns (address);

   /**
    * @notice Allows the owner to withdraw unspent POLY stored by them on the ST or any ERC20 token.
    * @dev Owner can transfer POLY to the ST which will be used to pay for modules that require a POLY fee.
    * @param _tokenContract Address of the ERC20Basic compliance token
    * @param _value Amount of POLY to withdraw
    */
    function withdrawERC20(address _tokenContract, uint256 _value) external;

    /**
    * @notice Allows owner to approve more POLY to one of the modules
    * @param _module Module address
    * @param _budget New budget
    */
    function changeModuleBudget(address _module, uint256 _budget) external;

    /**
     * @notice Changes the tokenDetails
     * @param _newTokenDetails New token details
     */
    function updateTokenDetails(string _newTokenDetails) external;

    /**
    * @notice Allows the owner to change token granularity
    * @param _granularity Granularity level of the token
    */
    function changeGranularity(uint256 _granularity) external;

    /**
    * @notice Removes addresses with zero balances from the investors list
    * @param _start Index in investors list at which to start removing zero balances
    * @param _iters Max number of iterations of the for loop
    * NB - pruning this list will mean you may not be able to iterate over investors on-chain as of a historical checkpoint
    */
    function pruneInvestors(uint256 _start, uint256 _iters) external;

    /**
     * @notice Freezes all the transfers
     */
    function freezeTransfers() external;

    /**
     * @notice Un-freezes all the transfers
     */
    function unfreezeTransfers() external;

    /**
     * @notice Ends token minting period permanently
     */
    function freezeMinting() external;

    /**
     * @notice Mints new tokens and assigns them to the target investors.
     * Can only be called by the STO attached to the token or by the Issuer (Security Token contract owner)
     * @param _investors A list of addresses to whom the minted tokens will be delivered
     * @param _values A list of the amount of tokens to mint to corresponding addresses from _investor[] list
     * @return Success
     */
    function mintMulti(address[] _investors, uint256[] _values) external returns (bool success);

    /**
     * @notice Function used to attach a module to the security token
     * @dev  E.G.: On deployment (through the STR) ST gets a TransferManager module attached to it
     * @dev to control restrictions on transfers.
     * @dev You are allowed to add a new moduleType if:
     * @dev - there is no existing module of that type yet added
     * @dev - the last member of the module list is replacable
     * @param _moduleFactory is the address of the module factory to be added
     * @param _data is data packed into bytes used to further configure the module (See STO usage)
     * @param _maxCost max amount of POLY willing to pay to module. (WIP)
     */
    function addModule(
        address _moduleFactory,
        bytes _data,
        uint256 _maxCost,
        uint256 _budget
    ) external;

    /**
    * @notice Archives a module attached to the SecurityToken
    * @param _module address of module to archive
    */
    function archiveModule(address _module) external;

    /**
    * @notice Unarchives a module attached to the SecurityToken
    * @param _module address of module to unarchive
    */
    function unarchiveModule(address _module) external;

    /**
    * @notice Removes a module attached to the SecurityToken
    * @param _module address of module to archive
    */
    function removeModule(address _module) external;

    /**
     * @notice Used by the issuer to set the controller addresses
     * @param _controller address of the controller
     */
    function setController(address _controller) external;

    /**
     * @notice Used by a controller to execute a forced transfer
     * @param _from address from which to take tokens
     * @param _to address where to send tokens
     * @param _value amount of tokens to transfer
     * @param _data data to indicate validation
     * @param _log data attached to the transfer by controller to emit in event
     */
    function forceTransfer(address _from, address _to, uint256 _value, bytes _data, bytes _log) external;

    /**
     * @notice Used by a controller to execute a foced burn
     * @param _from address from which to take tokens
     * @param _value amount of tokens to transfer
     * @param _data data to indicate validation
     * @param _log data attached to the transfer by controller to emit in event
     */
    function forceBurn(address _from, uint256 _value, bytes _data, bytes _log) external;

    /**
     * @notice Used by the issuer to permanently disable controller functionality
     * @dev enabled via feature switch "disableControllerAllowed"
     */
     function disableController() external;

     /**
     * @notice Used to get the version of the securityToken
     */
     function getVersion() external view returns(uint8[]);

     /**
     * @notice Gets the investor count
     */
     function getInvestorCount() external view returns(uint256);

     /**
      * @notice Overloaded version of the transfer function
      * @param _to receiver of transfer
      * @param _value value of transfer
      * @param _data data to indicate validation
      * @return bool success
      */
     function transferWithData(address _to, uint256 _value, bytes _data) external returns (bool success);

     /**
      * @notice Overloaded version of the transferFrom function
      * @param _from sender of transfer
      * @param _to receiver of transfer
      * @param _value value of transfer
      * @param _data data to indicate validation
      * @return bool success
      */
     function transferFromWithData(address _from, address _to, uint256 _value, bytes _data) external returns(bool);

     /**
      * @notice Provides the granularity of the token
      * @return uint256
      */
     function granularity() external view returns(uint256);
}

/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
interface IERC20 {
    function decimals() external view returns (uint8);
    function totalSupply() external view returns (uint256);
    function balanceOf(address _owner) external view returns (uint256);
    function allowance(address _owner, address _spender) external view returns (uint256);
    function transfer(address _to, uint256 _value) external returns (bool);
    function transferFrom(address _from, address _to, uint256 _value) external returns (bool);
    function approve(address _spender, uint256 _value) external returns (bool);
    function decreaseApproval(address _spender, uint _subtractedValue) external returns (bool);
    function increaseApproval(address _spender, uint _addedValue) external returns (bool);
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

/**
 * @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 OwnershipRenounced(address indexed previousOwner);
  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 relinquish control of the contract.
   */
  function renounceOwnership() public onlyOwner {
    emit OwnershipRenounced(owner);
    owner = address(0);
  }

  /**
   * @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 {
    _transferOwnership(_newOwner);
  }

  /**
   * @dev Transfers control of the contract to a newOwner.
   * @param _newOwner The address to transfer ownership to.
   */
  function _transferOwnership(address _newOwner) internal {
    require(_newOwner != address(0));
    emit OwnershipTransferred(owner, _newOwner);
    owner = _newOwner;
  }
}

/**
 * @title Interface that any module contract should implement
 * @notice Contract is abstract
 */
contract Module is IModule {

    address public factory;

    address public securityToken;

    bytes32 public constant FEE_ADMIN = "FEE_ADMIN";

    IERC20 public polyToken;

    /**
     * @notice Constructor
     * @param _securityToken Address of the security token
     * @param _polyAddress Address of the polytoken
     */
    constructor (address _securityToken, address _polyAddress) public {
        securityToken = _securityToken;
        factory = msg.sender;
        polyToken = IERC20(_polyAddress);
    }

    //Allows owner, factory or permissioned delegate
    modifier withPerm(bytes32 _perm) {
        bool isOwner = msg.sender == Ownable(securityToken).owner();
        bool isFactory = msg.sender == factory;
        require(isOwner||isFactory||ISecurityToken(securityToken).checkPermission(msg.sender, address(this), _perm), "Permission check failed");
        _;
    }

    modifier onlyOwner {
        require(msg.sender == Ownable(securityToken).owner(), "Sender is not owner");
        _;
    }

    modifier onlyFactory {
        require(msg.sender == factory, "Sender is not factory");
        _;
    }

    modifier onlyFactoryOwner {
        require(msg.sender == Ownable(factory).owner(), "Sender is not factory owner");
        _;
    }

    modifier onlyFactoryOrOwner {
        require((msg.sender == Ownable(securityToken).owner()) || (msg.sender == factory), "Sender is not factory or owner");
        _;
    }

    /**
     * @notice used to withdraw the fee by the factory owner
     */
    function takeFee(uint256 _amount) public withPerm(FEE_ADMIN) returns(bool) {
        require(polyToken.transferFrom(securityToken, Ownable(factory).owner(), _amount), "Unable to take fee");
        return true;
    }
}

/**
 * @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 c) {
    // Gas optimization: this is cheaper than asserting 'a' not being zero, but the
    // benefit is lost if 'b' is also tested.
    // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
    if (a == 0) {
      return 0;
    }

    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 c) {
    c = a + b;
    assert(c >= a);
    return c;
  }
}

/**
 * @title Interface to be implemented by all STO modules
 */
contract ISTO is Module, Pausable  {
    using SafeMath for uint256;

    enum FundRaiseType { ETH, POLY, DAI }
    mapping (uint8 => bool) public fundRaiseTypes;
    mapping (uint8 => uint256) public fundsRaised;

    // Start time of the STO
    uint256 public startTime;
    // End time of the STO
    uint256 public endTime;
    // Time STO was paused
    uint256 public pausedTime;
    // Number of individual investors
    uint256 public investorCount;
    // Address where ETH & POLY funds are delivered
    address public wallet;
     // Final amount of tokens sold
    uint256 public totalTokensSold;

    // Event
    event SetFundRaiseTypes(FundRaiseType[] _fundRaiseTypes);

    /**
    * @notice Reclaims ERC20Basic compatible tokens
    * @dev We duplicate here due to the overriden owner & onlyOwner
    * @param _tokenContract The address of the token contract
    */
    function reclaimERC20(address _tokenContract) external onlyOwner {
        require(_tokenContract != address(0), "Invalid address");
        IERC20 token = IERC20(_tokenContract);
        uint256 balance = token.balanceOf(address(this));
        require(token.transfer(msg.sender, balance), "Transfer failed");
    }

    /**
     * @notice Returns funds raised by the STO
     */
    function getRaised(FundRaiseType _fundRaiseType) public view returns (uint256) {
        return fundsRaised[uint8(_fundRaiseType)];
    }

    /**
     * @notice Returns the total no. of tokens sold
     */
    function getTokensSold() public view returns (uint256);

    /**
     * @notice Pause (overridden function)
     */
    function pause() public onlyOwner {
        /*solium-disable-next-line security/no-block-members*/
        require(now < endTime, "STO has been finalized");
        super._pause();
    }

    /**
     * @notice Unpause (overridden function)
     */
    function unpause() public onlyOwner {
        super._unpause();
    }

    function _setFundRaiseType(FundRaiseType[] _fundRaiseTypes) internal {
        // FundRaiseType[] parameter type ensures only valid values for _fundRaiseTypes
        require(_fundRaiseTypes.length > 0, "Raise type is not specified");
        fundRaiseTypes[uint8(FundRaiseType.ETH)] = false;
        fundRaiseTypes[uint8(FundRaiseType.POLY)] = false;
        fundRaiseTypes[uint8(FundRaiseType.DAI)] = false;
        for (uint8 j = 0; j < _fundRaiseTypes.length; j++) {
            fundRaiseTypes[uint8(_fundRaiseTypes[j])] = true;
        }
        emit SetFundRaiseTypes(_fundRaiseTypes);
    }

}

/**
 * @title Helps contracts guard agains reentrancy attacks.
 * @author Remco Bloemen <[email protected]π.com>
 * @notice If you mark a function `nonReentrant`, you should also
 * mark it `external`.
 */
contract ReentrancyGuard {

  /**
   * @dev We use a single lock for the whole contract.
   */
  bool private reentrancyLock = false;

  /**
   * @dev Prevents a contract from calling itself, directly or indirectly.
   * @notice If you mark a function `nonReentrant`, you should also
   * mark it `external`. Calling one nonReentrant function from
   * another is not supported. Instead, you can implement a
   * `private` function doing the actual work, and a `external`
   * wrapper marked as `nonReentrant`.
   */
  modifier nonReentrant() {
    require(!reentrancyLock);
    reentrancyLock = true;
    _;
    reentrancyLock = false;
  }

}

/**
 * @title STO module for standard capped crowdsale
 */
contract CappedSTO is ISTO, ReentrancyGuard {
    using SafeMath for uint256;

    // Determine whether users can invest on behalf of a beneficiary
    bool public allowBeneficialInvestments = false;
    // How many token units a buyer gets per wei / base unit of POLY
    uint256 public rate;
    //How many tokens this STO will be allowed to sell to investors
    uint256 public cap;

    mapping (address => uint256) public investors;

    /**
    * 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);

    event SetAllowBeneficialInvestments(bool _allowed);

    constructor (address _securityToken, address _polyAddress) public
    Module(_securityToken, _polyAddress)
    {
    }

    //////////////////////////////////
    /**
    * @notice fallback function ***DO NOT OVERRIDE***
    */
    function () external payable {
        buyTokens(msg.sender);
    }

    /**
     * @notice Function used to intialize the contract variables
     * @param _startTime Unix timestamp at which offering get started
     * @param _endTime Unix timestamp at which offering get ended
     * @param _cap Maximum No. of tokens for sale
     * @param _rate Token units a buyer gets per wei / base unit of POLY
     * @param _fundRaiseTypes Type of currency used to collect the funds
     * @param _fundsReceiver Ethereum account address to hold the funds
     */
    function configure(
        uint256 _startTime,
        uint256 _endTime,
        uint256 _cap,
        uint256 _rate,
        FundRaiseType[] _fundRaiseTypes,
        address _fundsReceiver
    )
    public
    onlyFactory
    {
        require(_rate > 0, "Rate of token should be greater than 0");
        require(_fundsReceiver != address(0), "Zero address is not permitted");
        /*solium-disable-next-line security/no-block-members*/
        require(_startTime >= now && _endTime > _startTime, "Date parameters are not valid");
        require(_cap > 0, "Cap should be greater than 0");
        require(_fundRaiseTypes.length == 1, "It only selects single fund raise type");
        startTime = _startTime;
        endTime = _endTime;
        cap = _cap;
        rate = _rate;
        wallet = _fundsReceiver;
        _setFundRaiseType(_fundRaiseTypes);
    }

    /**
     * @notice This function returns the signature of configure function
     */
    function getInitFunction() public pure returns (bytes4) {
        return bytes4(keccak256("configure(uint256,uint256,uint256,uint256,uint8[],address)"));
    }

    /**
     * @notice Function to set allowBeneficialInvestments (allow beneficiary to be different to funder)
     * @param _allowBeneficialInvestments Boolean to allow or disallow beneficial investments
     */
    function changeAllowBeneficialInvestments(bool _allowBeneficialInvestments) public onlyOwner {
        require(_allowBeneficialInvestments != allowBeneficialInvestments, "Does not change value");
        allowBeneficialInvestments = _allowBeneficialInvestments;
        emit SetAllowBeneficialInvestments(allowBeneficialInvestments);
    }

    /**
      * @notice Low level token purchase ***DO NOT OVERRIDE***
      * @param _beneficiary Address performing the token purchase
      */
    function buyTokens(address _beneficiary) public payable nonReentrant {
        if (!allowBeneficialInvestments) {
            require(_beneficiary == msg.sender, "Beneficiary address does not match msg.sender");
        }

        require(!paused, "Should not be paused");
        require(fundRaiseTypes[uint8(FundRaiseType.ETH)], "Mode of investment is not ETH");

        uint256 weiAmount = msg.value;
        _processTx(_beneficiary, weiAmount);

        _forwardFunds();
        _postValidatePurchase(_beneficiary, weiAmount);
    }

    /**
      * @notice low level token purchase
      * @param _investedPOLY Amount of POLY invested
      */
    function buyTokensWithPoly(uint256 _investedPOLY) public nonReentrant{
        require(!paused, "Should not be paused");
        require(fundRaiseTypes[uint8(FundRaiseType.POLY)], "Mode of investment is not POLY");
        _processTx(msg.sender, _investedPOLY);
        _forwardPoly(msg.sender, wallet, _investedPOLY);
        _postValidatePurchase(msg.sender, _investedPOLY);
    }

    /**
    * @notice Checks whether the cap has been reached.
    * @return bool Whether the cap was reached
    */
    function capReached() public view returns (bool) {
        return totalTokensSold >= cap;
    }

    /**
     * @notice Return the total no. of tokens sold
     */
    function getTokensSold() public view returns (uint256) {
        return totalTokensSold;
    }

    /**
     * @notice Return the permissions flag that are associated with STO
     */
    function getPermissions() public view returns(bytes32[]) {
        bytes32[] memory allPermissions = new bytes32[](0);
        return allPermissions;
    }

    /**
     * @notice Return the STO details
     * @return Unixtimestamp at which offering gets start.
     * @return Unixtimestamp at which offering ends.
     * @return Number of tokens this STO will be allowed to sell to investors.
     * @return Amount of funds raised
     * @return Number of individual investors this STO have.
     * @return Amount of tokens get sold. 
     * @return Boolean value to justify whether the fund raise type is POLY or not, i.e true for POLY.
     */
    function getSTODetails() public view returns(uint256, uint256, uint256, uint256, uint256, uint256, uint256, bool) {
        return (
            startTime,
            endTime,
            cap,
            rate,
            (fundRaiseTypes[uint8(FundRaiseType.POLY)]) ? fundsRaised[uint8(FundRaiseType.POLY)]: fundsRaised[uint8(FundRaiseType.ETH)],
            investorCount,
            totalTokensSold,
            (fundRaiseTypes[uint8(FundRaiseType.POLY)])
        );
    }

    // -----------------------------------------
    // Internal interface (extensible)
    // -----------------------------------------
    /**
      * Processing the purchase as well as verify the required validations
      * @param _beneficiary Address performing the token purchase
      * @param _investedAmount Value in wei involved in the purchase
    */
    function _processTx(address _beneficiary, uint256 _investedAmount) internal {

        _preValidatePurchase(_beneficiary, _investedAmount);
        // calculate token amount to be created
        uint256 tokens = _getTokenAmount(_investedAmount);

        // update state
        if (fundRaiseTypes[uint8(FundRaiseType.POLY)]) {
            fundsRaised[uint8(FundRaiseType.POLY)] = fundsRaised[uint8(FundRaiseType.POLY)].add(_investedAmount);
        } else {
            fundsRaised[uint8(FundRaiseType.ETH)] = fundsRaised[uint8(FundRaiseType.ETH)].add(_investedAmount);
        }
        totalTokensSold = totalTokensSold.add(tokens);

        _processPurchase(_beneficiary, tokens);
        emit TokenPurchase(msg.sender, _beneficiary, _investedAmount, tokens);

        _updatePurchasingState(_beneficiary, _investedAmount);
    }

    /**
    * @notice Validation of an incoming purchase.
      Use require statements to revert state when conditions are not met. Use super to concatenate validations.
    * @param _beneficiary Address performing the token purchase
    * @param _investedAmount Value in wei involved in the purchase
    */
    function _preValidatePurchase(address _beneficiary, uint256 _investedAmount) internal view {
        require(_beneficiary != address(0), "Beneficiary address should not be 0x");
        require(_investedAmount != 0, "Amount invested should not be equal to 0");
        require(totalTokensSold.add(_getTokenAmount(_investedAmount)) <= cap, "Investment more than cap is not allowed");
        /*solium-disable-next-line security/no-block-members*/
        require(now >= startTime && now <= endTime, "Offering is closed/Not yet started");
    }

    /**
    * @notice Validation of an executed purchase.
      Observe state and use revert statements to undo rollback when valid conditions are not met.
    */
    function _postValidatePurchase(address /*_beneficiary*/, uint256 /*_investedAmount*/) internal pure {
      // optional override
    }

    /**
    * @notice 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 {
        require(ISecurityToken(securityToken).mint(_beneficiary, _tokenAmount), "Error in minting the tokens");
    }

    /**
    * @notice 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 {
        if (investors[_beneficiary] == 0) {
            investorCount = investorCount + 1;
        }
        investors[_beneficiary] = investors[_beneficiary].add(_tokenAmount);

        _deliverTokens(_beneficiary, _tokenAmount);
    }

    /**
    * @notice Overrides for extensions that require an internal state to check for validity
      (current user contributions, etc.)
    */
    function _updatePurchasingState(address /*_beneficiary*/, uint256 /*_investedAmount*/) internal pure {
      // optional override
    }

    /**
    * @notice Overrides to extend the way in which ether is converted to tokens.
    * @param _investedAmount Value in wei to be converted into tokens
    * @return Number of tokens that can be purchased with the specified _investedAmount
    */
    function _getTokenAmount(uint256 _investedAmount) internal view returns (uint256) {
        return _investedAmount.mul(rate);
    }

    /**
    * @notice Determines how ETH is stored/forwarded on purchases.
    */
    function _forwardFunds() internal {
        wallet.transfer(msg.value);
    }

    /**
     * @notice Internal function used to forward the POLY raised to beneficiary address
     * @param _beneficiary Address of the funds reciever
     * @param _to Address who wants to ST-20 tokens
     * @param _fundsAmount Amount invested by _to
     */
    function _forwardPoly(address _beneficiary, address _to, uint256 _fundsAmount) internal {
        polyToken.transferFrom(_beneficiary, _to, _fundsAmount);
    }

}

Contract ABI

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me":"_beneficiary","type":"address"}],"name":"buyTokens","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[],"name":"getTokensSold","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"name":"_securityToken","type":"address"},{"name":"_polyAddress","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"anonymous":false,"inputs":[{"indexed":true,"name":"purchaser","type":"address"},{"indexed":true,"name":"beneficiary","type":"address"},{"indexed":false,"name":"value","type":"uint256"},{"indexed":false,"name":"amount","type":"uint256"}],"name":"TokenPurchase","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"_allowed","type":"bool"}],"name":"SetAllowBeneficialInvestments","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"_fundRaiseTypes","type":"uint8[]"}],"name":"SetFundRaiseTypes","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"_timestammp","type":"uint256"}],"name":"Pause","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"_timestamp","type":"uint256"}],"name":"Unpause","type":"event"}]

Contract Creation Code

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Swarm Source

bzzr://76595337e7d8d6b672de734ec78923638f8bb6aed9f7179635c136d2a3409a62
Block Age Transaction Difficulty GasUsed Reward
Block Age Uncle Number Difficulty GasUsed Reward