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35 lines
742 B
35 lines
742 B
interface I{
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function external_call() external;
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}
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contract ReentrancyAndWrite{
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/// @custom:security non-reentrant
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/// @custom:security write-protection="onlyOwner()"
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I external_contract;
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modifier onlyOwner(){
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// lets assume there is an access control
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_;
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}
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mapping(address => uint) balances;
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function withdraw() public{
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uint balance = balances[msg.sender];
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external_contract.external_call();
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balances[msg.sender] = 0;
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payable(msg.sender).transfer(balance);
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}
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function set_protected() public onlyOwner(){
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external_contract = I(msg.sender);
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}
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function set_not_protected() public{
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external_contract = I(msg.sender);
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}
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}
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