I am trying to make a Parent-Contract which has a function which spends ERC-20 Tokens. I want to call this function from different Child-Contracts (which are deployed independently) using Delegatecall. I tried following sample-code:
contract Parent {
address reciever;
MyERC20 token;
constructor(address _token) public {
reciever = msg.sender;
token = MyERC20(_token);
}
function payReciever(uint256 amount) public {
token.transfer(reciever, amount);
}
}
contract Child {
address child;
constructor(address _child) public {
child = _child;
}
function transfer(uint amount) public returns (bool) {
(bool success, bytes memory data) = child.delegatecall(
abi.encodeWithSignature("payReciever(uint256)", amount)
);
return success;
}
}
So summarized, I want that payReciever() is called with the state of Child and then executes the transfer using Child as the sender.
Unfortunately, the delegatecall returns false and I can´t quite figure out why.
What is msg.sender in token.transfer()? What could be the problem in the above Code?
