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ABlockGuard

Overview​

License: MIT​

abstract contract ABlockGuard

The BlockGuard module

This module facilitates the flash-loan protection mechanism. Users may be prohibited from calling certain functions in the same block e.g. via the Multicall.

Usage example:​

contract NotFlashloanable is ABlockGuard {
    function deposit(uint256 amount) external lockBlock("DEPOSIT", msg.sender) {
        . . .
    }

    function withdraw(uint256 amount) external checkBlock("DEPOSIT", msg.sender) {
        . . .
    }
}

Structs info​

ABlockGuardStorage​

struct ABlockGuardStorage {
    mapping(string => mapping(address => uint256)) lockedInBlocks;
}

Errors info​

BlockGuardLocked​

error BlockGuardLocked(string resource, address key)

Modifiers info​

lockBlock​

modifier lockBlock(string memory resource_, address key_)

checkBlock​

modifier checkBlock(string memory resource_, address key_)

checkLockBlock​

modifier checkLockBlock(string memory resource_, address key_)