How to kill crowdsale contract?

Question

I want to just simply kill this contract what code do i type into the get console to kill this contract so that the funds are returned to the owner which is me. Please let me know how you did it so I can apply the geth command code to kill my other contracts as well.

contract address: 0x999d5f024439A0EcfD554753e9E4A9eDa9261B73

JSON:

[ { "constant": false, "inputs": [], "name": "checkGoalReached", "outputs": [], "payable": false, "type": "function" }, { "constant": true, "inputs": [], "name": "deadline", "outputs": [ { "name": "", "type": "uint256", "value": "1496312040" } ], "payable": false, "type": "function" }, { "constant": true, "inputs": [], "name": "beneficiary", "outputs": [ { "name": "", "type": "address", "value": "0x64c0118a896bb075448a7f0cd6e760a41cff800c" } ], "payable": false, "type": "function" }, { "constant": true, "inputs": [], "name": "tokenReward", "outputs": [ { "name": "", "type": "address", "value": "0x64c0118a896bb075448a7f0cd6e760a41cff800c" } ], "payable": false, "type": "function" }, { "constant": true, "inputs": [ { "name": "", "type": "address" } ], "name": "balanceOf", "outputs": [ { "name": "", "type": "uint256", "value": "0" } ], "payable": false, "type": "function" }, { "constant": true, "inputs": [], "name": "fundingGoal", "outputs": [ { "name": "", "type": "uint256", "value": "1e+22" } ], "payable": false, "type": "function" }, { "constant": true, "inputs": [], "name": "amountRaised", "outputs": [ { "name": "", "type": "uint256", "value": "200000000000000000" } ], "payable": false, "type": "function" }, { "constant": true, "inputs": [], "name": "price", "outputs": [ { "name": "", "type": "uint256", "value": "1e+21" } ], "payable": false, "type": "function" }, { "constant": false, "inputs": [], "name": "safeWithdrawal", "outputs": [], "payable": false, "type": "function" }, { "inputs": [ { "name": "ifSuccessfulSendTo", "type": "address", "index": 0, "typeShort": "address", "bits": "", "displayName": "if Successful Send To", "template": "elements_input_address" }, { "name": "fundingGoalInEthers", "type": "uint256", "index": 1, "typeShort": "uint", "bits": "256", "displayName": "funding Goal In Ethers", "template": "elements_input_uint" }, { "name": "durationInMinutes", "type": "uint256", "index": 2, "typeShort": "uint", "bits": "256", "displayName": "duration In Minutes", "template": "elements_input_uint" }, { "name": "etherCostOfEachToken", "type": "uint256", "index": 3, "typeShort": "uint", "bits": "256", "displayName": "ether Cost Of Each Token", "template": "elements_input_uint" }, { "name": "addressOfTokenUsedAsReward", "type": "address", "index": 4, "typeShort": "address", "bits": "", "displayName": "address Of Token Used As Reward", "template": "elements_input_address" } ], "payable": false, "type": "constructor" }, { "payable": true, "type": "fallback" }, { "anonymous": false, "inputs": [ { "indexed": false, "name": "beneficiary", "type": "address" }, { "indexed": false, "name": "amountRaised", "type": "uint256" } ], "name": "GoalReached", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": false, "name": "backer", "type": "address" }, { "indexed": false, "name": "amount", "type": "uint256" }, { "indexed": false, "name": "isContribution", "type": "bool" } ], "name": "FundTransfer", "type": "event" } ]

Answer 1

Ethereum smart contracts are immutable. You cannot change their source code once they are deployed. You should have included the kill/suicide/selfdestruct code before deployment. However, I see two functions in the ABI that might be useful, one is safeWithdrawal and the other is ifSuccessfulSendTo. The second one is a variable I guess, but it looks like the contract already has a function that uses this. But the first one is definitely a function. Have you tried executing it?

Answer 2

It does not look like you have any function included in the contract that makes the contract "killable" or mortal. As Ethereum contracts are immutable as soon as they are deployed to the Blockchain there is no way to add a kill method after they are deployed. For your future contracts I'd recommend you to inherit from a mortal contract that specifies the kill switch and then let all you contracts inherit from this contract. It looks like this:

contract owned {

    address owner;

    /*this function is executed at initialization and sets the owner of the contract */
    function owned() { owner = msg.sender; }

    modifier onlyOwner() {
        require(msg.sender == owner);
        _;
    }
}

contract mortal is owned {

    /* Function to recover the funds on the contract */
    function kill() onlyOwner() {
        selfdestruct(owner);
    }

}

contract yourContract is owned, mortal {
    // Your contract logic goes here
}

This way you will always be able to kill your contracts. Your contract the way you presented is neither mortal nor killable.

If you find this answer because you were looking at the tutorial Crowdsale by the Ethereum foundation then be advised that you can use the function safeWithdrawal to withdraw funds. There are some prerequisites:

• The crowdsale has to be over (afterDeadline)
• You have to withdraw the funds with the same account that you used for transferring the funds to the Crowdsale contract
• You can only withdraw as much as you put into the contract.

Answer 3

You can't release the funds all at once if it was funded from multiple addresses

1. Open the Crowd sale Contract on Mist Ethereum Wallet
2. From Write From Contract, Select Function Safe Withdrawal
3. Execute from the account that sent the refund and you should be refunded

you can see the latest transaction from an account page, do you have the tx hash or address you are trying to get a refund at?