Running Shell Command in Swift

Question

Im attempting to build a swift OSX app that can run some shell commands to mount the users requested VPNs. I tried using NSAppleScript but got an error every time I tried to run with Admin privileges so I decided to use NSTask to call an apple script that will run as admin and mount the VPNs.

In order to debug getting the shell commands working in swift through NSTask I made a test script file that just has a simple whoami command that works when I run it in the script editor and in the terminal using osascript /Users/amaloney/Desktop/test.scpt

However in my Swift file

import Foundation

let task = NSTask();
task.launchPath = "/usr/bin/osascript"
task.arguments = ["/Users/amaloney/Desktop/test.scpt"]

task.launch()

I continue to get the following error

script error -54. Couldn't get error text because of error -1700.

Any thoughts on how I can get this working?

Thanks!

For reference - test.scpt

do shell script "whoami"

Are you waiting for the command to finish with task.waitUntilExit()? — Kametrixom
– Kametrixom, Commented Jul 15, 2015 at 20:22
@Kametrixom I've tried running with that as well, same error — Alexander Maloney
– Alexander Maloney, Commented Jul 15, 2015 at 20:28
@ThomasKilian Ive read thorough that already, that user is getting error -2741 which I am not. — Alexander Maloney
– Alexander Maloney, Commented Jul 15, 2015 at 20:43

Alexander Maloney · Accepted Answer · 2015-07-16 19:31:20Z

1

I was running this in an Xcode Playground, which apparently was the source of the problems. Once I went ahead and integrated this code into my OSX app it worked fine.

answered Jul 16, 2015 at 19:31

Alexander Maloney

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l'L'l · Accepted Answer · 2015-07-15 20:49:30Z

0

The issues appear to be related to the AppleScript portions of your code:

script error -54

↳ -54 File permission error
Couldn't get error text because of error -1700.

↳ Can’t make ... into type item.

It's likely your script tries to perform an operation that it doesn't have permission to do, and also tries to assign the wrong type — Without seeing the script or knowing what it does it's unknown.

answered Jul 15, 2015 at 20:49

l'L'l

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4 Comments

Alexander Maloney Over a year ago

I suspected this as well but I cant seem to find any problems with my script -- do shell script "whoami"

l'L'l Over a year ago

If you want to use AppleScript with NSTask then the command needs to be absolute: do shell script "/usr/bin/whoami"... The whoami utility is obsolete anyway, so you could use /usr/bin/id with NSTask instead, then AppleScript is not needed.

Alexander Maloney Over a year ago

My end goal is not to use whoami, that was just something simple for a test. My plan is to execute some jamf commands from within my swift app

l'L'l Over a year ago

Most NSTasks can work similarly; hopefully this has given you a better understanding of the prcoess.

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