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Approve and call fix of the data param construction

This commit is contained in:
Jordi Baylina 2017-05-01 17:32:33 +02:00
parent 31bce217fb
commit 282380156e
1 changed files with 7 additions and 10 deletions
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17
contracts/MiniMeToken.sol
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@ -67,6 +67,10 @@ contract Controlled {
}
}
contract ApproveAndCallFallBack {
function receiveApproval(address from, uint256 _amount, address _token, bytes _data);
}
/// @dev The actual token contract, the default controller is the msg.sender
/// that deploys the contract, so usually this token will be deployed by a
/// token controller contract, which Giveth will call a "Campaign"
@ -289,20 +293,13 @@ contract MiniMeToken is Controlled {
allowed[msg.sender][_spender] = _amount;
Approval(msg.sender, _spender, _amount);
// This portion is copied from ConsenSys's Standard Token Contract. It
// calls the receiveApproval function that is part of the contract that
// is being approved (`_spender`). The function should look like:
// `receiveApproval(address _from, uint256 _amount, address
// _tokenContract, bytes _extraData)` It is assumed that the call
// *should* succeed, otherwise the plain vanilla approve would be used
if(!_spender.call(
bytes4(bytes32(sha3("receiveApproval(address,uint256,address,bytes)"))),
ApproveAndCallFallBack(_spender).receiveApproval(
msg.sender,
_amount,
this,
_extraData
)) { throw;
}
);
return true;
}