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prevent vote overwrite

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Ricardo Guilherme Schmidt 2019-02-20 01:16:42 -03:00
parent 26e697584e
commit ff3aa67510
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contracts/democracy/Proposal.sol
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@ -75,6 +75,7 @@ contract Proposal is Controlled, MessageSigned {
require(block.number > voteBlockEnd, "Voting running"); require(block.number > voteBlockEnd, "Voting running");
require(MerkleProof.verifyProof(_proof, signatures[_position], keccak256(_signature)), "Invalid proof"); require(MerkleProof.verifyProof(_proof, signatures[_position], keccak256(_signature)), "Invalid proof");
address _voter = recoverAddress(keccak256(abi.encodePacked(address(this), _vote)), _signature); address _voter = recoverAddress(keccak256(abi.encodePacked(address(this), _vote)), _signature);
require(voteMap[_voter] == Vote.Null, "Already tabulated");
voteMap[_voter] = _vote; voteMap[_voter] = _vote;
setTabulation(_voter, _voter, _vote); setTabulation(_voter, _voter, _vote);
} }