smartbugs-curated/dataset/reentrancy/etherstore.sol

32 lines
949 B
Solidity

/*
* @source: https://github.com/sigp/solidity-security-blog
* @author: Suhabe Bugrara
* @vulnerable_at_lines: 27
*/
//added pragma version
pragma solidity ^0.4.0;
contract EtherStore {
uint256 public withdrawalLimit = 1 ether;
mapping(address => uint256) public lastWithdrawTime;
mapping(address => uint256) public balances;
function depositFunds() public payable {
balances[msg.sender] += msg.value;
}
function withdrawFunds (uint256 _weiToWithdraw) public {
require(balances[msg.sender] >= _weiToWithdraw);
// limit the withdrawal
require(_weiToWithdraw <= withdrawalLimit);
// limit the time allowed to withdraw
require(now >= lastWithdrawTime[msg.sender] + 1 weeks);
// <yes> <report> REENTRANCY
require(msg.sender.call.value(_weiToWithdraw)());
balances[msg.sender] -= _weiToWithdraw;
lastWithdrawTime[msg.sender] = now;
}
}