How to update the binary handler content? about b2r2 HOT 5 CLOSED

As you described, we would like to make the handler immutable, and what you described is okay, but I would simply maintain the original buffer (byte []) somewhere in your code, and modify the buffer before you create a new handler. This way, you can eliminate the second step.

Originally, the UpdateCode function was designed to be used to parse dynamic execution traces where we can read a basic-block-level code chunk at a time. In this case, we need to frequently update the code, and creating a new handler was not a big deal. In your use case, however, creating a new BinHandler all the time will be largely redundant as you pointed out. Maybe we should create a mutable-version of BinHandler (something like MutableBinHandler).

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I am reopening the issue so that we don't forget.

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Please checkout: 40e7be6

You should now be able to modify the buffer by:

// hdl = BinHandler
hdl.FileInfo.BinReader.Bytes.[idx] <- byteValue

Or even by:

hdl.FileInfo.BinReader.Bytes <- newArray

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Actually, I think we can address your concern by modifying the BinReader class in such a way that it can have a setter. We are currently cleaning up the BinFile and BinReader module, so we will try to fix this issue in the next release. In the meantime, you can stick to your current strategy.

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Thanks for the suggestion. I'll do as you said, while I wait for the next release :)

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