As mentioned previously, we deploy a custom Safari Toolbar with links to various sites to our Macs.
With the release of Safari 6.2 & 7.1 Apple has changed the method to install extensions, once a Mac has been updated to Safari 6.2 or 7.1 the user is prompted to “migrate” their extensions.This change breaks the previously posted method to install extensions, as the installed extensions list is now in the users Keychain (!?).
Below is how to install extensions via Self Service, which in testing works for all Safari versions & allows the user to reinstall if they recreate their login.keychain.
Keychain?! That’s whackadoodle!*
It took me sometime to figure out how extensions get installed once Safari 6.2 & 7.1 have been installed. My usual approach of using Composer & “monitor file system changes” only led to an array being populate in ~/Library/Preferences/com.apple.Safari.plist similar to the below. (See the “com.mycomany.extension-myDeveloperID identifier” string).
Scripting this change, only added the extension into Safari’s list of extensions to be enabled, & doesn’t enable the extension.
Digging around, I stumbled across a new entry in my login.keychain called “Safari Extension List”
Running the below will show you the contents of this application password, (SPOILER: it’s not pretty).
After looking through the above commands output & realising that even if I could cobble together a method that would add an entry to this key, it would then be removed whenever a user forgets their password & has to reset their login.keychain.
So, I decided to instead mirror what Apple expects leveraging Self Service for the install.
Self Service Install
So the below basically recreates the method of someone downloading an extension themselves & then double clicking it to get the below prompt:
If you’re running the below via a Self Service policy, you can specify the path to the Extension as $4 in the policy. Else you can hardcode the location (this script added as a pkg as a post flight may work with Munki’s Managed Software Center etc…).
NOTE: Do not place the extension in ~/Library/Safari/Extensions, as this will error if Safari is installing it when it has not been installed before. As an example, we put ours in /private/tmp/. A copy of the extension can be in ~/Library/Safari/Extensions, you just can’t install it from there.
Updating The Extension
With all of this, I was worried about updating the extension. Well, it appears that just replacing the extension in ~/Library/Safari/Extensions works fine.
However, I’m not sure if Apple with further tighten extensions & therefore a method more like that outlined here might be worth looking at.
*credit to Rich Trouton for the exclamation on IRC.