juce::ChildProcess does not run osascript command to install pkg on macOS

Development
1

Hi,

I try to run this command

osascript -e 'do shell script "sudo installer -pkg /path/to/some.pkg -target /" with administrator privileges'

with

juce::String pkgFilePath = "/path/to/some.pkg";
juce::String command = "osascript -e 'do shell script \"sudo installer -pkg " + pkgFilePath + " -target /\" with administrator privileges'";
juce::ChildProcess *driverInstallerCommand = new juce::ChildProcess();
driverInstallerCommand->start(command);
juce::String driverInstallOutput = driverInstallerCommand->readAllProcessOutput();
// print output

but I get this error: 0:1: syntax error: A unknown token can’t go here. (-2740)

I tried a lot of escaping. I guess it is just some small adjustment to get this running.
In Terminal the command runs without any problems.

Any ideas?

Thanks,
David

2

There was a post the other day where the solution seemed to be to split the arguments up using a StringArray:

Maybe something like this (untested)?

StringArray { "osascript", "-e", "do shell script \"sudo installer -pkg /path/to/some.pkg -target /\" with administrator privileges" };
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3

Thanks, I did not saw your answer until today. I will try it in the next days.

4

Did anyone verify if this works or not? I can’t get it to work in a mildly complicated situation. It took me several hours to figure out the correct combination of , ', and " to get this command to properly work on the command line.

String cmd = "osascript -e \"do shell script \\\"mv '" + source.getFullPathName() + "' " + destination.getParentDirectory().getFullPathName() + " \\\" with administrator privileges\"";

Console output of cmd results in:

osascript -e "do shell script \"mv '/Users/cr/Library/Caches/myApp/my.vst3' /Library/Audio/Plug-Ins/VST3 \" with administrator privileges"

If I paste this line in Terminal, it runs. But when I send it to ChildProcess, it results in the error:

**19:19: syntax error: Expected “"” but found end of script. (-2741)**

Which is super helpful. This smells like a similar issue to the other two threads on this subject, but with so many quotes and backslashes, trying to part this out in to a StringArray is proving… difficult.

Does anyone who has done this before have some insight?

5

The solution, for those searching for help on osascript in the future, is to use system() rather than ChildProcess().

e.g. make your String cmd above; make sure the output works by DBG(cmd) and copy-pasting it to a Terminal.

Then:

system(cmd.toRawUTF8());
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