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relayhub protection

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This commit is contained in:
Alexey 2019-09-26 18:46:49 +03:00
parent dee1c6140a
commit 926a4d7298
4 changed files with 15 additions and 7 deletions
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3
contracts/GSNMixer.sol
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@ -14,6 +14,7 @@ contract GSNMixer is Mixer, GSNRecipient {
) Mixer(_verifier, _mixDenomination, _merkleTreeHeight, _emptyElement, _operator) public {
}
bool couldBeWithdrawn;
modifier onlyHub() {
require(msg.sender == getHubAddr(), "only relay hub");
_;
@ -27,7 +28,7 @@ contract GSNMixer is Mixer, GSNRecipient {
require(isKnownRoot(root), "Cannot find your merkle root"); // Make sure to use a recent one
require(verifier.verifyProof(a, b, c, input), "Invalid withdraw proof");
nullifierHashes[nullifierHash] = true;
couldBeWithdrawn = true;
// we will process withdraw in postRelayedCall func
}