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pragma solidity ^0.4.24;
contract ERC20 {
function totalSupply() public view returns (uint256);
function balanceOf(address _who) public view returns (uint256);
function allowance(address _owner, address _spender)
public view returns (uint256);
function transfer(address _to, uint256 _value) public returns (bool);
function approve(address _spender, uint256 _value)
public returns (bool);
function transferFrom(address _from, address _to, uint256 _value)
public returns (bool);
event Transfer(
address indexed from,
address indexed to,
uint256 value
);
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}
library SafeMath {
function mul(uint256 _a, uint256 _b) internal pure returns (uint256) {
if (_a == 0) {
return 0;
}
uint256 c = _a * _b;
require(c / _a == _b);
return c;
}
function div(uint256 _a, uint256 _b) internal pure returns (uint256) {
require(_b > 0);
uint256 c = _a / _b;
return c;
}
function sub(uint256 _a, uint256 _b) internal pure returns (uint256) {
require(_b <= _a);
uint256 c = _a - _b;
return c;
}
function add(uint256 _a, uint256 _b) internal pure returns (uint256) {
uint256 c = _a + _b;
require(c >= _a);
return c;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
}
contract Ownable {
address public owner;
event OwnershipRenounced(address indexed previousOwner);
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
constructor() public {
owner = msg.sender;
}
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
function renounceOwnership() public onlyOwner {
emit OwnershipRenounced(owner);
owner = address(0);
}
function transferOwnership(address _newOwner) public onlyOwner {
_transferOwnership(_newOwner);
}
function _transferOwnership(address _newOwner) internal {
require(_newOwner != address(0));
emit OwnershipTransferred(owner, _newOwner);
owner = _newOwner;
}
}
contract IcoRocketFuel is Ownable {
using SafeMath for uint256;
enum States {Active, Refunding, Closed}
struct Crowdsale {
address owner;
address refundWallet;
uint256 cap;
uint256 goal;
uint256 raised;
uint256 rate;
uint256 minInvest;
uint256 closingTime;
bool earlyClosure;
uint8 commission;
States state;
}
address public commissionWallet;
mapping(address => Crowdsale) public crowdsales;
mapping (address => mapping(address => uint256)) public deposits;
modifier onlyCrowdsaleOwner(address _token) {
require(
msg.sender == crowdsales[_token].owner,
"Failed to call function due to permission denied."
);
_;
}
modifier inState(address _token, States _state) {
require(
crowdsales[_token].state == _state,
"Failed to call function due to crowdsale is not in right state."
);
_;
}
modifier nonZeroAddress(address _token) {
require(
_token != address(0),
"Failed to call function due to address is 0x0."
);
_;
}
event CommissionWalletUpdated(
address indexed _previoudWallet,
address indexed _newWallet
);
event CrowdsaleCreated(
address indexed _owner,
address indexed _token,
address _refundWallet,
uint256 _cap,
uint256 _goal,
uint256 _rate,
uint256 closingTime,
bool earlyClosure,
uint8 _commission
);
event TokenBought(
address indexed _buyer,
address indexed _token,
uint256 _value
);
event CrowdsaleClosed(
address indexed _setter,
address indexed _token
);
event SurplusTokensRefunded(
address _token,
address _beneficiary,
uint256 _surplus
);
event CommissionPaid(
address indexed _payer,
address indexed _token,
address indexed _beneficiary,
uint256 _value
);
event RefundsEnabled(
address indexed _setter,
address indexed _token
);
event CrowdsaleTokensRefunded(
address indexed _token,
address indexed _refundWallet,
uint256 _value
);
event RaisedWeiClaimed(
address indexed _beneficiary,
address indexed _token,
uint256 _value
);
event TokenClaimed(
address indexed _beneficiary,
address indexed _token,
uint256 _value
);
event CrowdsalePaused(
address indexed _owner,
address indexed _token
);
event WeiRefunded(
address indexed _beneficiary,
address indexed _token,
uint256 _value
);
function setCommissionWallet(
address _newWallet
)
external
onlyOwner
nonZeroAddress(_newWallet)
{
emit CommissionWalletUpdated(commissionWallet, _newWallet);
commissionWallet = _newWallet;
}
function createCrowdsale(
address _token,
address _refundWallet,
uint256 _cap,
uint256 _goal,
uint256 _rate,
uint256 _minInvest,
uint256 _closingTime,
bool _earlyClosure,
uint8 _commission
)
external
nonZeroAddress(_token)
nonZeroAddress(_refundWallet)
{
require(
crowdsales[_token].owner == address(0),
"Failed to create crowdsale due to the crowdsale is existed."
);
require(
_goal <= _cap,
"Failed to create crowdsale due to goal is larger than cap."
);
require(
_minInvest > 0,
"Failed to create crowdsale due to minimum investment is 0."
);
require(
_commission <= 100,
"Failed to create crowdsale due to commission is larger than 100."
);
_cap.mul(_rate);
crowdsales[_token] = Crowdsale({
owner: msg.sender,
refundWallet: _refundWallet,
cap: _cap,
goal: _goal,
raised: 0,
rate: _rate,
minInvest: _minInvest,
closingTime: _closingTime,
earlyClosure: _earlyClosure,
state: States.Active,
commission: _commission
});
emit CrowdsaleCreated(
msg.sender,
_token,
_refundWallet,
_cap,
_goal,
_rate,
_closingTime,
_earlyClosure,
_commission
);
}
function buyToken(
address _token
)
external
inState(_token, States.Active)
nonZeroAddress(_token)
payable
{
require(
msg.value >= crowdsales[_token].minInvest,
"Failed to buy token due to less than minimum investment."
);
require(
crowdsales[_token].raised.add(msg.value) <= (
crowdsales[_token].cap
),
"Failed to buy token due to exceed cap."
);
require(
block.timestamp < crowdsales[_token].closingTime,
"Failed to buy token due to crowdsale is closed."
);
deposits[msg.sender][_token] = (
deposits[msg.sender][_token].add(msg.value)
);
crowdsales[_token].raised = crowdsales[_token].raised.add(msg.value);
emit TokenBought(msg.sender, _token, msg.value);
}
function _goalReached(
ERC20 _token
)
private
nonZeroAddress(_token)
view
returns(bool)
{
return (crowdsales[_token].raised >= crowdsales[_token].goal) && (
_token.balanceOf(address(this)) >=
crowdsales[_token].raised.mul(crowdsales[_token].rate)
);
}
function _refundSurplusTokens(
ERC20 _token,
address _beneficiary
)
private
nonZeroAddress(_token)
inState(_token, States.Closed)
{
uint256 _balance = _token.balanceOf(address(this));
uint256 _surplus = _balance.sub(
crowdsales[_token].raised.mul(crowdsales[_token].rate));
emit SurplusTokensRefunded(_token, _beneficiary, _surplus);
if (_surplus > 0) {
_token.transfer(_beneficiary, _surplus);
}
}
function _payCommission(
address _token
)
private
nonZeroAddress(_token)
inState(_token, States.Closed)
onlyCrowdsaleOwner(_token)
{
uint256 _commission = crowdsales[_token].raised
.mul(uint256(crowdsales[_token].commission))
.div(100);
crowdsales[_token].raised = crowdsales[_token].raised.sub(_commission);
emit CommissionPaid(msg.sender, _token, commissionWallet, _commission);
commissionWallet.transfer(_commission);
}
function _refundCrowdsaleTokens(
ERC20 _token,
address _beneficiary
)
private
nonZeroAddress(_token)
inState(_token, States.Refunding)
{
crowdsales[_token].raised = 0;
uint256 _value = _token.balanceOf(address(this));
emit CrowdsaleTokensRefunded(_token, _beneficiary, _value);
if (_value > 0) {
_token.transfer(_beneficiary, _token.balanceOf(address(this)));
}
}
function _enableRefunds(
address _token
)
private
nonZeroAddress(_token)
inState(_token, States.Active)
{
crowdsales[_token].state = States.Refunding;
emit RefundsEnabled(msg.sender, _token);
}
function finalize(
address _token
)
external
nonZeroAddress(_token)
inState(_token, States.Active)
onlyCrowdsaleOwner(_token)
{
require(
crowdsales[_token].earlyClosure || (
block.timestamp >= crowdsales[_token].closingTime),
"Failed to finalize due to crowdsale is opening."
);
if (_goalReached(ERC20(_token))) {
crowdsales[_token].state = States.Closed;
emit CrowdsaleClosed(msg.sender, _token);
_refundSurplusTokens(
ERC20(_token),
crowdsales[_token].refundWallet
);
_payCommission(_token);
} else {
_enableRefunds(_token);
_refundCrowdsaleTokens(
ERC20(_token),
crowdsales[_token].refundWallet
);
}
}
function pauseCrowdsale(
address _token
)
external
nonZeroAddress(_token)
onlyOwner
inState(_token, States.Active)
{
emit CrowdsalePaused(msg.sender, _token);
_enableRefunds(_token);
_refundCrowdsaleTokens(ERC20(_token), crowdsales[_token].refundWallet);
}
function claimRaisedWei(
address _token,
address _beneficiary
)
external
nonZeroAddress(_token)
nonZeroAddress(_beneficiary)
inState(_token, States.Closed)
onlyCrowdsaleOwner(_token)
{
require(
crowdsales[_token].raised > 0,
"Failed to claim raised Wei due to raised Wei is 0."
);
uint256 _raisedWei = crowdsales[_token].raised;
crowdsales[_token].raised = 0;
emit RaisedWeiClaimed(msg.sender, _token, _raisedWei);
_beneficiary.transfer(_raisedWei);
}
function claimToken(
address _token
)
external
nonZeroAddress(_token)
inState(_token, States.Closed)
{
require(
deposits[msg.sender][_token] > 0,
"Failed to claim token due to deposit is 0."
);
uint256 _value = (
deposits[msg.sender][_token].mul(crowdsales[_token].rate)
);
deposits[msg.sender][_token] = 0;
emit TokenClaimed(msg.sender, _token, _value);
ERC20(_token).transfer(msg.sender, _value);
}
function claimRefund(
address _token
)
public
nonZeroAddress(_token)
inState(_token, States.Refunding)
{
require(
deposits[msg.sender][_token] > 0,
"Failed to claim refund due to deposit is 0."
);
uint256 _value = deposits[msg.sender][_token];
deposits[msg.sender][_token] = 0;
emit WeiRefunded(msg.sender, _token, _value);
msg.sender.transfer(_value);
}
} |