app/src/main/java/com/stoutner/privacycell/activities/PrivacyCell.kt

   1 /*
   2  * Copyright © 2021 Soren Stoutner <soren@stoutner.com>.
   3  *
   4  * This file is part of Privacy Cell <https://www.stoutner.com/privacy-cell>.
   5  *
   6  * Privacy Cell is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Privacy Cell is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with Privacy Browser.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 package com.stoutner.privacycell.activities
  21
  22 import android.Manifest
  23 import android.content.Context
  24 import android.content.pm.PackageManager
  25 import android.os.Bundle
  26 import android.telephony.PhoneStateListener
  27 import android.telephony.TelephonyDisplayInfo
  28 import android.telephony.TelephonyManager
  29 import android.widget.ImageView
  30 import android.widget.TextView
  31
  32 import androidx.appcompat.app.AppCompatActivity
  33 import androidx.appcompat.content.res.AppCompatResources
  34 import androidx.core.app.ActivityCompat
  35
  36 import com.stoutner.privacycell.R
  37
  38 class PrivacyCell : AppCompatActivity() {
  39     override fun onCreate(savedInstanceState: Bundle?) {
  40         // Run the default commands.
  41         super.onCreate(savedInstanceState)
  42
  43         // Set the content view.
  44         setContentView(R.layout.privacy_cell_linearlayout)
  45
  46         // Get handles for the views.
  47         val secureFromStingrayImageView = findViewById<ImageView>(R.id.secure_from_stingray_imageview)
  48         val secureFromStingrayTextView = findViewById<TextView>(R.id.secure_from_stingray_textview)
  49         val voiceNetworkTextView = findViewById<TextView>(R.id.voice_network)
  50         val voiceNetworkDetailsTextView = findViewById<TextView>(R.id.voice_network_details)
  51         val dataNetworkTextView = findViewById<TextView>(R.id.data_network)
  52         val dataNetworkDetailsTextView = findViewById<TextView>(R.id.data_network_details)
  53         val additionalNetworkInfoTextView = findViewById<TextView>(R.id.additional_network_info)
  54         val additionalNetworkInfoDetailsTextView = findViewById<TextView>(R.id.additional_network_info_details)
  55
  56         // TODO.
  57         if (ActivityCompat.checkSelfPermission(
  58                 this,
  59                 Manifest.permission.READ_PHONE_STATE
  60             ) != PackageManager.PERMISSION_GRANTED
  61         ) {
  62             // TODO: Consider calling
  63             //    ActivityCompat#requestPermissions
  64             // here to request the missing permissions, and then overriding
  65             //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
  66             //                                          int[] grantResults)
  67             // to handle the case where the user grants the permission. See the documentation
  68             // for ActivityCompat#requestPermissions for more details.
  69             return
  70         }
  71
  72         // Get a handle for the the telephone Manager and the context.
  73         val telephonyManager = getSystemService(Context.TELEPHONY_SERVICE) as TelephonyManager
  74         val context: Context = this
  75
  76         // Get the voice network type.
  77         val voiceNetworkType = getNetworkType(telephonyManager.voiceNetworkType)
  78
  79         // Populate the voice network text views.
  80         voiceNetworkTextView.text = getString(R.string.voice_network, voiceNetworkType[0])
  81         voiceNetworkDetailsTextView.text = voiceNetworkType[1]
  82
  83         // Listen to changes in the cell network state.
  84         telephonyManager.listen(object : PhoneStateListener() {
  85             override fun onDisplayInfoChanged(telephonyDisplayInfo: TelephonyDisplayInfo) {// Populate the secure from stingray text view.  <https://source.android.com/devices/tech/connect/acts-5g-testing>
  86                 // Populate the stingray security information.
  87                 if (telephonyDisplayInfo.networkType == TelephonyManager.NETWORK_TYPE_NR) {  // This is a secure 5G NR SA network.
  88                     // Populate the image view.
  89                     secureFromStingrayImageView.setImageDrawable(AppCompatResources.getDrawable(context, R.drawable.secure_5g_nr_sa))
  90
  91                     // Set the text.
  92                     secureFromStingrayTextView.text = getString(R.string.secure_from_stingray)
  93
  94                     // Set the text color.
  95                     secureFromStingrayTextView.setTextColor(getColor(R.color.blue_700))
  96                 } else {  // This is not a secure 5G NR SA network.
  97                     // Populate the image view.
  98                     secureFromStingrayImageView.setImageDrawable(AppCompatResources.getDrawable(context, R.drawable.not_secure))
  99
 100                     // Set the text.
 101                     secureFromStingrayTextView.text = getString(R.string.not_secure_from_stingray)
 102
 103                     // Set the text color.
 104                     secureFromStingrayTextView.setTextColor(getColor(R.color.red_700))
 105
 106                 // Get the strings that correspond to the network information.
 107                 val dataNetworkType = getNetworkType(telephonyDisplayInfo.networkType)
 108                 val additionalNetworkInfo = getAdditionalNetworkInfo(telephonyDisplayInfo.overrideNetworkType)
 109
 110                 // Populate the data network text views.
 111                 dataNetworkTextView.text = getString(R.string.data_network, dataNetworkType[0])
 112                 dataNetworkDetailsTextView.text = dataNetworkType[1]
 113                 additionalNetworkInfoTextView.text = getString(R.string.additional_network_info, additionalNetworkInfo[0])
 114                 additionalNetworkInfoDetailsTextView.text = additionalNetworkInfo[1]
 115                 }
 116             }
 117         }, PhoneStateListener.LISTEN_DISPLAY_INFO_CHANGED)
 118     }
 119
 120     private fun getNetworkType(networkType: Int) : Array<String> {
 121         // Return the string that corresponds to the network type.
 122         return when(networkType) {
 123             TelephonyManager.NETWORK_TYPE_UNKNOWN -> arrayOf(getString(R.string.unknown), getString(R.string.unknown))
 124             TelephonyManager.NETWORK_TYPE_GPRS -> arrayOf(getString(R.string.gprs), getString(R.string.gprs_detal))
 125             TelephonyManager.NETWORK_TYPE_EDGE -> arrayOf(getString(R.string.edge), getString(R.string.edge_detail))
 126             TelephonyManager.NETWORK_TYPE_UMTS -> arrayOf(getString(R.string.umts), getString(R.string.umts_detail))
 127             TelephonyManager.NETWORK_TYPE_CDMA -> arrayOf(getString(R.string.cdma), getString(R.string.cdma_detail))
 128             TelephonyManager.NETWORK_TYPE_EVDO_0 -> arrayOf(getString(R.string.evdo_0), getString(R.string.evdo_0_detail))
 129             TelephonyManager.NETWORK_TYPE_EVDO_A -> arrayOf(getString(R.string.evdo_a), getString(R.string.evdo_a_detail))
 130             TelephonyManager.NETWORK_TYPE_1xRTT -> arrayOf(getString(R.string.rtt), getString(R.string.rtt_detail))
 131             TelephonyManager.NETWORK_TYPE_HSDPA -> arrayOf(getString(R.string.hsdpa), getString(R.string.hsdpa_detail))
 132             TelephonyManager.NETWORK_TYPE_HSUPA -> arrayOf(getString(R.string.hsupa), getString(R.string.hsupa_detail))
 133             TelephonyManager.NETWORK_TYPE_HSPA -> arrayOf(getString(R.string.hspa), getString(R.string.hspa_detail))
 134             TelephonyManager.NETWORK_TYPE_IDEN -> arrayOf(getString(R.string.iden), getString(R.string.iden_detail))
 135             TelephonyManager.NETWORK_TYPE_EVDO_B -> arrayOf(getString(R.string.evdo_b), getString(R.string.evdo_b_detail))
 136             TelephonyManager.NETWORK_TYPE_LTE -> arrayOf(getString(R.string.lte), getString(R.string.lte_detail))
 137             TelephonyManager.NETWORK_TYPE_EHRPD -> arrayOf(getString(R.string.ehrpd), getString(R.string.ehrpd_detail))
 138             TelephonyManager.NETWORK_TYPE_HSPAP -> arrayOf(getString(R.string.hspap), getString(R.string.hspap_detail))
 139             TelephonyManager.NETWORK_TYPE_GSM -> arrayOf(getString(R.string.gsm), getString(R.string.gsm_detail))
 140             TelephonyManager.NETWORK_TYPE_TD_SCDMA -> arrayOf(getString(R.string.td_scdma), getString(R.string.td_scdma_detail))
 141             TelephonyManager.NETWORK_TYPE_IWLAN -> arrayOf(getString(R.string.iwlan), getString(R.string.iwlan_detail))
 142             TelephonyManager.NETWORK_TYPE_NR -> arrayOf(getString(R.string.nr), getString(R.string.nr_detail))
 143             else -> arrayOf(getString(R.string.error), getString(R.string.error))
 144         }
 145     }
 146
 147     private fun getAdditionalNetworkInfo(overrideNetworkType: Int) : Array<String> {
 148         // Return the string that corresponds to the override network type.
 149         return when(overrideNetworkType) {
 150             TelephonyDisplayInfo.OVERRIDE_NETWORK_TYPE_NONE -> arrayOf(getString(R.string.none), "")
 151             TelephonyDisplayInfo.OVERRIDE_NETWORK_TYPE_LTE_CA -> arrayOf(getString(R.string.lte_ca), getString(R.string.lte_ca_detail))
 152             TelephonyDisplayInfo.OVERRIDE_NETWORK_TYPE_LTE_ADVANCED_PRO -> arrayOf(getString(R.string.lte_advanced_pro), getString(R.string.lte_advanced_pro_detail))
 153             TelephonyDisplayInfo.OVERRIDE_NETWORK_TYPE_NR_NSA -> arrayOf(getString(R.string.lte_nr_nsa), getString(R.string.lte_nr_nsa_detail))
 154             TelephonyDisplayInfo.OVERRIDE_NETWORK_TYPE_NR_NSA_MMWAVE -> arrayOf(getString(R.string.lte_nr_nsa_mmwave), getString(R.string.lte_nr_nsa_mmwave_detail))
 155             else -> arrayOf(getString(R.string.error), "")
 156         }
 157     }
 158 }