my app is temporarily out of the Play Store. I hope it’s really a temporary thing.
It seems that my last beta (beta78), the one available only to the beta testers, was not compliant to the 4.4 section of the Developer Distribution Agreement. But let me explain in the right order.
50 minutes ago I received an e-mail from the Google Play Support. It was notifying me of some kind of violation. The e-mail was referring to the app: “Virtual Button ROOT MENU” (package ID jp.ne.neko.freewing.VirtualButtonRootMenu).
It seems that that app, which disables SELinux, violates the Developer Distribution Agreement
Don’t transmit or link to… items that may introduce security vulnerabilities to or harm user devices, apps, or personal data.
I’m serious it wasn’t some kind of phishing, they simply sent me the right notice but referring to someone else.
My latest beta has an advanced option which, if chosen, temporary lowers the device security by disabling SELinux on the device. It applies the DNS and brings SELinux back again. So it seems I’m guilty.
Disabling SELinux is not approved by the Play Store.
In my humble opinion it was not so obvious, but anyway, I repackaged a stable release and a beta without the SELinux thing. I’m waiting to see my app online again.
Override DNS is the easiest way to force your rooted phone to use custom nameservers on mobile networks.
Many things dealing with name resolution have changed in Android 4.4 KitKat and so all the current Play Store apps stopped working.
The problem I found with this release of Android (4.4) is that, apparently for caching reasons, the system behaviour has been changed to redirect all DNS queries to a system daemon called netd (here’s a link to a presentation related to Android networking before 4.4 which, however, covers part of this topics).
The getprop/setprop method used by all the DNS changer apps does not work anymore. Those values, when changed, get simply ignored by the netd daemon.
It’s necessary to communicate directly to the daemon via the /dev/socket/netd socket.
The app automatically guesses the network device name and applies the right commands each time a mobile network gets activated.
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