Airdrop status outputs an error first use

[bensleveritt]

When getting Airdrop status for the first time:

./m airdrop status
2021-05-06 16:19:04.741 defaults[85572:47467663] 
The domain/default pair of (com.apple.NetworkBrowser, DisableAirDrop) does not exist

Based on https://github.com/SummitRoute/osxlockdown/issues/50 this is expected, but it'd be nice to deal with.

[paxperscientiam]

One way to approach this would be to first check that the domain in question actually exists.

For example:

defaults read com.apple.NetworkBrowser
# yields the full configuration object
# exit value is 0

So, if that exits with 0 and defaults read com.apple.NetworkBrowser DisableAirDrop exits with 1, perhaps we should assume that the property DisableAirDrop just hasn't been set yet (which is the case in your example).

ie:

m airdrop status
# outputs "not previously set"

How to go about it really depends on how robust m-cli should be. The above is a basic heuristic. Another reason for failure might be that it is both true that the property is not set in the plist AND it's an unreferenced property (IE, it's a property that isn't used by any program, which would be the case for misspelled properties).

Personally, I would go with the simple solution for now

EDIT: grammar