Support for Local Network Usage permission about applesimulatorutils HOT 2 OPEN

I've now figured this out. The configuration is stored in /Library/Preferences/com.apple.networkextension.plist. This file is amended once a new app is installed. For example, the (shortended) entry for the Spotify app is:

<dict>
[...]
	<key>DenyMulticast</key>
	<true/>
	<key>IsIdentifierExternal</key>
	<false/>
	<key>MatchAccountIdentifiers</key>
	<dict>
		<key>CF$UID</key>
		<integer>0</integer>
	</dict>
	<key>MatchDomains</key>
	<dict>
		<key>CF$UID</key>
		<integer>0</integer>
	</dict>
	<key>MulticastPreferenceSet</key>
	<false/>
[...]
</dict>
<string>com.spotify.client</string>

MulticastPreferenceSet indicates whether a permission popup has been shown before. DenyMulticast saves the user's choice in response to that permission popup.

The file is manged by the nehelper daemon. We can thus

1. unload the daemon with

launchctl unload /System/Library/LaunchDaemons/com.apple.nehelper-embedded.plist

2. change /Library/Preferences/com.apple.networkextension.plist as we wish
3. reload the daemon with

launchctl load /System/Library/LaunchDaemons/com.apple.nehelper-embedded.plist

There does, however, seem to exist some kind of signature that's additionally added to the file. I haven't figure out yet, how this works. Yet, I've been able to change the file regardless.

from applesimulatorutils.

For those who want to quickly change the setting with the command line (like me), this is a set of commands that automates granting the setting (for the app com.spotify.client):

plistutil -i com.apple.networkextension.plist -o com.apple.networkextension.xml -f xml
xmlstarlet ed -r "//string[text() = 'com.spotify.client']/preceding-sibling::*[1]/key[text() = 'MulticastPreferenceSet' or text() = 'DenyMulticast']/following-sibling::*[1]" -v true com.apple.networkextension.xml
plistutil -i com.apple.networkextension.xml -o com.apple.networkextension.plist -f bin

Update: Here's a fully working script to grant this permission (needs jailbroken device).

from applesimulatorutils.