Created
May 16, 2017 18:39
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pragma solidity ^0.4.2; | |
/*contract token { | |
function transfer(address receiver, uint amount){} | |
}*/ | |
contract Crowdsale { | |
address beneficiary; | |
uint fundingGoal; | |
uint amountRaised; | |
uint deadline; | |
uint price; | |
//token public tokenReward; | |
mapping(address => uint256) public balanceOf; | |
bool fundingGoalReached = false; | |
event GoalReached(address beneficiary, uint amountRaised); | |
event FundTransfer(address backer, uint amount, bool isContribution); | |
event ContractCreated(address indexed beneficiary,uint duration); | |
event PayableCalled(bool inPayable); | |
event Transaction(address indexed fundsSender,uint funds,uint amountRaiesed); | |
event DeadlineCheck(address indexed checker,bool deadlinePassed); | |
bool crowdsaleClosed = false; | |
function getBeneficiary() returns(address) { | |
return beneficiary; | |
} | |
function getFundingGoal() returns(uint) { | |
return fundingGoal; | |
} | |
function getAmountRaised() returns(uint) { | |
return amountRaised; | |
} | |
function getDeadline() returns(uint) { | |
return deadline; | |
} | |
function getPrice() returns(uint) { | |
return price; | |
} | |
function Crowdsale( | |
address ifSuccessfulSendTo, | |
uint fundingGoalInEthers, | |
uint durationInMinutes, | |
uint etherCostOfEachToken | |
//, | |
//token addressOfTokenUsedAsReward | |
) { | |
beneficiary = ifSuccessfulSendTo; | |
fundingGoal = fundingGoalInEthers * 1 ether; | |
deadline = now + durationInMinutes * 1 minutes; | |
price = etherCostOfEachToken * 1 ether; | |
// tokenReward = token(addressOfTokenUsedAsReward); | |
ContractCreated(ifSuccessfulSendTo,deadline); | |
} | |
/* The function without name is the default function that is called whenever anyone sends funds to a contract */ | |
function () payable { | |
PayableCalled(true); | |
if (crowdsaleClosed) throw; | |
uint amount = msg.value; | |
balanceOf[msg.sender] = amount; | |
amountRaised += amount; | |
Transaction(msg.sender,msg.value,amountRaised); | |
//tokenReward.transfer(msg.sender, amount / price); | |
FundTransfer(msg.sender, amount, true); | |
} | |
modifier afterDeadline() { | |
if (now >= deadline){ | |
DeadlineCheck(msg.sender,true); | |
_; | |
}else{ | |
DeadlineCheck(msg.sender,true); | |
} | |
} | |
/* checks if the goal or time limit has been reached and ends the campaign */ | |
function checkGoalReached() afterDeadline { | |
if (amountRaised >= fundingGoal){ | |
fundingGoalReached = true; | |
GoalReached(beneficiary, amountRaised); | |
} | |
crowdsaleClosed = true; | |
} | |
function safeWithdrawal() afterDeadline { | |
if (!fundingGoalReached) { | |
uint amount = balanceOf[msg.sender]; | |
balanceOf[msg.sender] = 0; | |
if (amount > 0) { | |
if (msg.sender.send(amount)) { | |
FundTransfer(msg.sender, amount, false); | |
} else { | |
balanceOf[msg.sender] = amount; | |
} | |
} | |
} | |
if (fundingGoalReached && beneficiary == msg.sender) { | |
if (beneficiary.send(amountRaised)) { | |
FundTransfer(beneficiary, amountRaised, false); | |
} else { | |
//If we fail to send the funds to beneficiary, unlock funders balance | |
fundingGoalReached = false; | |
} | |
} | |
} | |
} | |
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