Re: User Installed Resouces (Admin Access)
Re: User Installed Resouces (Admin Access)
- Subject: Re: User Installed Resouces (Admin Access)
- From: "Stefan Arentz" <email@hidden>
- Date: Fri, 21 Sep 2007 21:54:48 +0200
On 9/18/07, Keith Duncan <email@hidden> wrote:
> I'm working on a new feature that allows the end user to install
> additional application resources post-install.
>
> I want to copy sound files to the application's support folder but I
> also want to give the user the option of installing the files for all
> users. An example of this can be seen in the System Preferences
> application when you install a new preference pane.
>
> I tried using NSFileManager and NSWorkspace methods to copy the files
> but they both fail and neither request authentication. I have hacked
> together some code that serves as a wrapper to
> AuthorizationExecuteWithPrivileges() allowing me to run arbitrary
> shell commands but I'd rather have a cleaner implementation.
>
> I'm also looking for a way to determine if the user has the rights to
> write to /Library/Application Support or if I have to put up an
> authorization panel before proceeding.
The admin group has write permission to /Library/Application Support.
To determine if the current user has the right permission you could
use getgrent("admin") to discover the members of the admin group.
Pseudo code:
current_user = getpwent();
group = getgrnam("admin")
if group.gr_mem contains current_user.pw_name then we are an admin
S.
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