Re: FindFolder/sudo puzzle
Re: FindFolder/sudo puzzle
- Subject: Re: FindFolder/sudo puzzle
- From: Andy O'Meara <email@hidden>
- Date: Sat, 24 May 2008 18:42:29 -0400
Thanks for the suggestions, Kevin. Unfortunately, I now realize that
our little app runs under sudo root, it doesn't even matter if it know
the right dir since any files or dir it creates will get tainted with
root permission/ownership. Basically, this seems to rule out being
able to write any files once the installer is in preflight (since its
sudoed at that point).
The only idea I have remaining is launching my app using sudo -u,
which would solve the FindFolder() issue as well as the file owner/
permissions issue. The only thing left, however, is to choose the
most reliable method to to get the username (or uid). The most
obvious method would be the following in preflight:
MY_RESULT=`sudo -u "${USER}" "$1/Contents/Resources/MyApp.app/Contents/
MacOS/MyApp"`
Does anyone see any issues with this for use in 10.3 and later? Is it
safe for me to be using USER?
Thanks,
Andy
On May 24, 2008, at 11:31 AM, Kevin Grant wrote:
You'd have an unprivileged process somewhere. There's at least a
couple of ways to do it:
- make "the installer" a tiny unprivileged program that derives
the user directory, and then runs the "real" installer program
(passing the path, e.g. through an environment variable)
- run the installer itself without privileges; invoke the 2nd app
immediately, then request administrator privileges later
Kevin G.
Here's an interesting one...
Our installer package has to run an app that runs that ultimately
needs to create a file in the current user's preferences dir. At
first glance, calling FindFolder() with kUserDomain would be the
way to get the the desired pathname. Unfortunately, however, since
the installer is running under sudo, all the paths returned by
FindFolder() point into /private/var/root, etc. So the question
becomes, is there any way to get the correct info from FindFolder()?
The goal would be to come up with something as reliable as possible
that doesn't contain any hard-coded paths/assumptions.
Thanks in advance,
Andy
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