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31 lines
986 B
31 lines
986 B
// pragma solidity ^0.4.24;
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abstract contract Token{
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function transfer(address to, uint value) public virtual returns(bool);
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function transferFrom(address from, address to, uint value) public virtual returns(bool);
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}
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contract Reentrancy {
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mapping(address => mapping(address => uint)) eth_deposed;
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mapping(address => mapping(address => uint)) token_deposed;
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function deposit_eth(address token) public payable{
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eth_deposed[token][msg.sender] += msg.value;
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}
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function deposit_token(address token, uint value) public {
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token_deposed[token][msg.sender] += value;
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require(Token(token).transferFrom(msg.sender, address(this), value));
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}
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function withdraw(address token) public {
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msg.sender.transfer(eth_deposed[token][msg.sender]);
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require(Token(token).transfer(msg.sender, token_deposed[token][msg.sender]));
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eth_deposed[token][msg.sender] = 0;
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token_deposed[token][msg.sender] = 0;
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}
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}
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