This is a very tall order. I suspect that it’ll be impossible to meet all of your goals.
To start, you’ll likely need a daemon and an agent, because some of these things can only be done from a daemon and some can only be done from an agent.
File Upload Events: I want to listen for events when users upload
files to their Macs.
Please specify what you mean by “upload”. I presume that this includes uploading using a web browser. What about copying a file to an SMB file server?
Drag-and-Drop Events: I'd like to capture events when users perform
drag-and-drop actions.
I’m not aware of any way to do this.
Clipboard Events: I'm also interested in monitoring copy/paste actions
in the clipboard.
There are techniques for doing this, all based on NSPasteboard. Reading the pasteboard is easy; the hard part is knowing when to read it. I’m not sure what best practice is here, but I think that most folks just poll the changeCount property.
This needs to use AppKit and thus has to run as an agent.
If you need more info, I recommend that you start a new thread for this specific topic and tag it with AppKit.
Keystroke Events: Finally, I want to be able to track keystroke
events.
I generally use CGEventTap for that. You can find a snippet here.
Again, this needs to run as an agent.
If you have follow-up questions, I recommend that you search DevForums because this is something I’ve talked about extensively here. If you don’t find the answers you seek, start a new thread and tag it with Core Graphics and Privacy.
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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
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