45 lines
1.1 KiB
Solidity
45 lines
1.1 KiB
Solidity
// SPDX-License-Identifier: MIT
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pragma solidity ^0.6.0;
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import "../utils/ReentrancyGuard.sol";
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import "./ReentrancyAttack.sol";
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contract ReentrancyMock is ReentrancyGuard {
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uint256 public counter;
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constructor () public {
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counter = 0;
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}
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function callback() external nonReentrant {
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_count();
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}
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function countLocalRecursive(uint256 n) public nonReentrant {
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if (n > 0) {
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_count();
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countLocalRecursive(n - 1);
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}
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}
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function countThisRecursive(uint256 n) public nonReentrant {
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if (n > 0) {
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_count();
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// solhint-disable-next-line avoid-low-level-calls
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(bool success,) = address(this).call(abi.encodeWithSignature("countThisRecursive(uint256)", n - 1));
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require(success, "ReentrancyMock: failed call");
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}
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}
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function countAndCall(ReentrancyAttack attacker) public nonReentrant {
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_count();
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bytes4 func = bytes4(keccak256("callback()"));
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attacker.callSender(func);
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}
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function _count() private {
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counter += 1;
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}
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}
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