Is it possible to programmatically create VPN profile on Android (assuming that I have a rooted device)?
If is possible, how?
You should look at the com.android.settings.vpn2 package. There it uses the @hidden KeyStore methods to manipulate VPNs:
KeyStore.getInstance().saw(Credentials.VPN)returns an array of String VPN IDs
VpnProfile.decode(KeyStore.getInstance().get(Credentials.VPN + vpn_id))gets the VPN configuration data for the given VPN ID and decodes it as a VpnProfile object.
VpnProfile.put(Credentials.VPN + vpn_id, someVpnProfileInstance.encode())will create/update a VPN connection with the given ID using the settings in the VpnProfile instance.
However, you will need to execute this as the system process — otherwise, the KeyStore instance you get will not be connected to the one that the OS uses.
If there is a way to do this without a rooted device, I’d be interested in knowing how…
P.S. – There’s a similar question here: How to programmatically create a new VPN interface with Android 4.0?