hey guys any knows a way to trigger a function upon receiving an NFT in a smart contract? Similar to a receive() function for eth

yes, create a listener that listens to WSS and the event

thanks but i meant within the smart contract so u can do reentrancy ? Im just auditing a smart contract

No, as far as i know

In the example given, the best way to prevent this attack is to make sure you don't call an external function until you've done all the internal work you need to do:

yea thanks a lot thats what i will do

Implement the onERC721Received on your contract

Its part of standard erc721

oh right, i saw this too onERC1155Received

Yeah token standards started implementing those

After erc20 getting stuck on contracts