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.ServiceState
  28 import android.telephony.TelephonyDisplayInfo
  29 import android.telephony.TelephonyManager
  30 import android.view.MenuItem
  31 import android.view.View
  32 import android.widget.ImageView
  33 import android.widget.TextView
  34
  35 import androidx.appcompat.app.ActionBar
  36 import androidx.appcompat.app.ActionBarDrawerToggle
  37 import androidx.appcompat.app.AppCompatActivity
  38 import androidx.appcompat.content.res.AppCompatResources
  39 import androidx.appcompat.widget.Toolbar
  40 import androidx.core.app.ActivityCompat
  41 import androidx.drawerlayout.widget.DrawerLayout
  42 import androidx.fragment.app.DialogFragment
  43
  44 import com.google.android.material.navigation.NavigationView
  45
  46 import com.stoutner.privacycell.R
  47 import com.stoutner.privacycell.dialogs.PhonePermissionDialog
  48
  49 class PrivacyCell : AppCompatActivity(), NavigationView.OnNavigationItemSelectedListener, PhonePermissionDialog.StoragePermissionDialogListener {
  50     // Declare the class variables.
  51     private lateinit var context: Context
  52     private lateinit var telephonyManager: TelephonyManager
  53     private lateinit var actionBarDrawerToggle: ActionBarDrawerToggle
  54
  55     // Declare the views.
  56     lateinit var secureFromStingrayImageView: ImageView
  57     lateinit var secureFromStingrayTextView: TextView
  58     lateinit var voiceNetworkTextView: TextView
  59     lateinit var voiceNetworkDetailsTextView: TextView
  60     lateinit var dataNetworkTextView: TextView
  61     lateinit var dataNetworkDetailsTextView: TextView
  62     lateinit var additionalNetworkInfoTextView: TextView
  63     lateinit var additionalNetworkInfoDetailsTextView: TextView
  64
  65     override fun onCreate(savedInstanceState: Bundle?) {
  66         // Run the default commands.
  67         super.onCreate(savedInstanceState)
  68
  69         // Set the content view.
  70         setContentView(R.layout.privacy_cell_drawerlayout)
  71
  72         // Get handles for the views.
  73         val drawerLayout = findViewById<DrawerLayout>(R.id.drawerlayout)
  74         val toolbar = findViewById<Toolbar>(R.id.toolbar)
  75         secureFromStingrayImageView = findViewById(R.id.secure_from_stingray_imageview)
  76         secureFromStingrayTextView = findViewById(R.id.secure_from_stingray_textview)
  77         voiceNetworkTextView = findViewById(R.id.voice_network)
  78         voiceNetworkDetailsTextView = findViewById(R.id.voice_network_details)
  79         dataNetworkTextView = findViewById(R.id.data_network)
  80         dataNetworkDetailsTextView = findViewById(R.id.data_network_details)
  81         additionalNetworkInfoTextView = findViewById(R.id.additional_network_info)
  82         additionalNetworkInfoDetailsTextView = findViewById(R.id.additional_network_info_details)
  83         val navigationView = findViewById<NavigationView>(R.id.navigationview)
  84
  85         // Get handles for the context and the telephony manager.
  86         context = this
  87         telephonyManager = getSystemService(Context.TELEPHONY_SERVICE) as TelephonyManager
  88
  89         // Set the support action bar.
  90         setSupportActionBar(toolbar)
  91
  92         // Get a handle for the action bar.
  93         val actionBar = supportActionBar!!
  94
  95         // Set a custom view on the action bar.
  96         actionBar.setCustomView(R.layout.app_bar_textview)
  97
  98         // Display the custom view.
  99         actionBar.displayOptions = ActionBar.DISPLAY_SHOW_CUSTOM
 100
 101         // Define a hamburger icon at the start of the app bar.  It will be populated in `onPostCreate()`.
 102         actionBarDrawerToggle = ActionBarDrawerToggle(this, drawerLayout, toolbar, R.string.open_navigation_drawer, R.string.close_navigation_drawer)
 103
 104         // Listen for touches on the navigation menu.
 105         navigationView.setNavigationItemSelectedListener(this)
 106
 107         // Add a drawer listener.
 108         drawerLayout.addDrawerListener(object : DrawerLayout.DrawerListener {
 109             override fun onDrawerSlide(drawerView: View, slideOffset: Float) {
 110                 // Do nothing.
 111             }
 112
 113             override fun onDrawerOpened(drawerView: View) {
 114                 // Do nothing.
 115             }
 116
 117             override fun onDrawerClosed(drawerView: View) {
 118                 // Reset the drawer icon when the drawer is closed.  Otherwise, it is an arrow if the drawer is open when the app is restarted.
 119                 actionBarDrawerToggle.syncState()
 120             }
 121
 122             override fun onDrawerStateChanged(newState: Int) {
 123                 // Do nothing.
 124             }
 125         })
 126     }
 127
 128     override fun onPostCreate(savedInstanceState: Bundle?) {
 129         // Run the default commands.
 130         super.onPostCreate(savedInstanceState)
 131
 132         // Sync the state of the DrawerToggle after the default `onRestoreInstanceState()` has finished.  This creates the navigation drawer icon.
 133         actionBarDrawerToggle.syncState()
 134     }
 135
 136     override fun onResume() {
 137         // Run the default commands.
 138         super.onResume()
 139
 140         // Check to see if the read phone state permission has been granted.  These commands need to be run on every resume so that the listener gets reassigned as it is automatically paused.
 141         if (ActivityCompat.checkSelfPermission(this, Manifest.permission.READ_PHONE_STATE) == PackageManager.PERMISSION_GRANTED) {  // The storage permission has been granted.
 142             // Populate Privacy Cell.
 143             populatePrivacyCell()
 144         } else {  // The phone permission has not been granted.
 145             // Check if the user has previously denied the storage permission.
 146             if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.READ_PHONE_STATE)) {  // Show a dialog explaining the request first.
 147                 // Check to see if a phone permission dialog is already displayed.  This happens if the app is restarted when the dialog is shown.
 148                 if (supportFragmentManager.findFragmentByTag(getString(R.string.phone_permission)) == null) {  // No dialog is currently shown.
 149                     // Instantiate the phone permission dialog fragment.
 150                     val phonePermissionDialogFragment: DialogFragment = PhonePermissionDialog()
 151
 152                     // Show the phone permission alert dialog.  The permission will be requested when the dialog is closed.
 153                     phonePermissionDialogFragment.show(supportFragmentManager, getString(R.string.phone_permission))
 154                 }
 155             } else {  // Show the permission request directly.
 156                 // Request the read phone state permission.  There is only one permission request in the app, so it has a request code of 0.
 157                 ActivityCompat.requestPermissions(this, arrayOf(Manifest.permission.READ_PHONE_STATE), 0)
 158             }
 159         }
 160     }
 161
 162     override fun onCloseStoragePermissionDialog() {
 163         // Request the read phone state permission.  There is only one permission request in the app, so it has a request code of 0.
 164         ActivityCompat.requestPermissions(this, arrayOf(Manifest.permission.READ_PHONE_STATE), 0)
 165     }
 166
 167     override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
 168         // Run the default commands.
 169         super.onRequestPermissionsResult(requestCode, permissions, grantResults)
 170
 171         //Only process the results if they exist (this method is triggered when a dialog is presented the first time for an app, but no grant results are included).
 172         if (grantResults.isNotEmpty()) {
 173             // Check to see if the read phone state permission was granted.  If the dialog was canceled the grant results will be empty.
 174             if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {  // The read phone state permission was granted.
 175                 // Populate Privacy Cell.
 176                 populatePrivacyCell()
 177             } else {  // The read phone state permission was denied.
 178                 // Display the phone permission text on the main activity.
 179                 secureFromStingrayTextView.text = getString(R.string.phone_permission_text)
 180             }
 181         }
 182     }
 183
 184     private fun populatePrivacyCell() {
 185         // Listen to changes in the cell network state.
 186         telephonyManager.listen(object : PhoneStateListener() {
 187             override fun onDisplayInfoChanged(telephonyDisplayInfo: TelephonyDisplayInfo) {
 188                 // Populate the stingray security information.  <https://source.android.com/devices/tech/connect/acts-5g-testing>
 189                 if (telephonyDisplayInfo.networkType == TelephonyManager.NETWORK_TYPE_NR) {  // This is a secure 5G NR SA network.
 190                     // Populate the image view.
 191                     secureFromStingrayImageView.setImageDrawable(AppCompatResources.getDrawable(context, R.drawable.secure_5g_nr_sa))
 192
 193                     // Set the text.
 194                     secureFromStingrayTextView.text = getString(R.string.secure_from_stingray)
 195
 196                     // Set the text color.
 197                     secureFromStingrayTextView.setTextColor(getColor(R.color.blue_text))
 198                 } else {  // This is not a secure 5G NR SA network.
 199                     // Populate the image view.
 200                     secureFromStingrayImageView.setImageDrawable(AppCompatResources.getDrawable(context, R.drawable.not_secure))
 201
 202                     // Set the text.
 203                     secureFromStingrayTextView.text = getString(R.string.not_secure_from_stingray)
 204
 205                     // Set the text color.
 206                     secureFromStingrayTextView.setTextColor(getColor(R.color.red_text))
 207
 208                     // Get the strings that correspond to the network information.
 209                     val dataNetworkType = getNetworkType(telephonyDisplayInfo.networkType)
 210                     val additionalNetworkInfo = getAdditionalNetworkInfo(telephonyDisplayInfo.overrideNetworkType)
 211
 212                     // Populate the data network text views.
 213                     dataNetworkTextView.text = getString(R.string.data_network, dataNetworkType[0])
 214                     dataNetworkDetailsTextView.text = dataNetworkType[1]
 215                     additionalNetworkInfoTextView.text = getString(R.string.additional_network_info, additionalNetworkInfo[0])
 216                     additionalNetworkInfoDetailsTextView.text = additionalNetworkInfo[1]
 217                 }
 218             }
 219
 220             override fun onServiceStateChanged(serviceState: ServiceState) {
 221                 // Get the network registration info for the voice network, which is the second of the three entries (the first appears to be Wi-Fi and the third appears to be the cell data network).
 222                 val networkRegistrationInfo = serviceState.networkRegistrationInfoList[1]
 223
 224                 // Get the voice network type.
 225                 val voiceNetworkType = getNetworkType(networkRegistrationInfo.accessNetworkTechnology)
 226
 227                 // Populate the voice network text views.
 228                 voiceNetworkTextView.text = getString(R.string.voice_network, voiceNetworkType[0])
 229                 voiceNetworkDetailsTextView.text = voiceNetworkType[1]
 230             }
 231         }, PhoneStateListener.LISTEN_DISPLAY_INFO_CHANGED or PhoneStateListener.LISTEN_SERVICE_STATE)
 232     }
 233
 234     private fun getNetworkType(networkType: Int) : Array<String> {
 235         // Return the string that corresponds to the network type.
 236         return when(networkType) {
 237             TelephonyManager.NETWORK_TYPE_UNKNOWN -> arrayOf(getString(R.string.unknown), "")
 238             TelephonyManager.NETWORK_TYPE_GPRS -> arrayOf(getString(R.string.gprs), getString(R.string.gprs_detal))
 239             TelephonyManager.NETWORK_TYPE_EDGE -> arrayOf(getString(R.string.edge), getString(R.string.edge_detail))
 240             TelephonyManager.NETWORK_TYPE_UMTS -> arrayOf(getString(R.string.umts), getString(R.string.umts_detail))
 241             TelephonyManager.NETWORK_TYPE_CDMA -> arrayOf(getString(R.string.cdma), getString(R.string.cdma_detail))
 242             TelephonyManager.NETWORK_TYPE_EVDO_0 -> arrayOf(getString(R.string.evdo_0), getString(R.string.evdo_0_detail))
 243             TelephonyManager.NETWORK_TYPE_EVDO_A -> arrayOf(getString(R.string.evdo_a), getString(R.string.evdo_a_detail))
 244             TelephonyManager.NETWORK_TYPE_1xRTT -> arrayOf(getString(R.string.rtt), getString(R.string.rtt_detail))
 245             TelephonyManager.NETWORK_TYPE_HSDPA -> arrayOf(getString(R.string.hsdpa), getString(R.string.hsdpa_detail))
 246             TelephonyManager.NETWORK_TYPE_HSUPA -> arrayOf(getString(R.string.hsupa), getString(R.string.hsupa_detail))
 247             TelephonyManager.NETWORK_TYPE_HSPA -> arrayOf(getString(R.string.hspa), getString(R.string.hspa_detail))
 248             TelephonyManager.NETWORK_TYPE_IDEN -> arrayOf(getString(R.string.iden), getString(R.string.iden_detail))
 249             TelephonyManager.NETWORK_TYPE_EVDO_B -> arrayOf(getString(R.string.evdo_b), getString(R.string.evdo_b_detail))
 250             TelephonyManager.NETWORK_TYPE_LTE -> arrayOf(getString(R.string.lte), getString(R.string.lte_detail))
 251             TelephonyManager.NETWORK_TYPE_EHRPD -> arrayOf(getString(R.string.ehrpd), getString(R.string.ehrpd_detail))
 252             TelephonyManager.NETWORK_TYPE_HSPAP -> arrayOf(getString(R.string.hspap), getString(R.string.hspap_detail))
 253             TelephonyManager.NETWORK_TYPE_GSM -> arrayOf(getString(R.string.gsm), getString(R.string.gsm_detail))
 254             TelephonyManager.NETWORK_TYPE_TD_SCDMA -> arrayOf(getString(R.string.td_scdma), getString(R.string.td_scdma_detail))
 255             TelephonyManager.NETWORK_TYPE_IWLAN -> arrayOf(getString(R.string.iwlan), getString(R.string.iwlan_detail))
 256             TelephonyManager.NETWORK_TYPE_NR -> arrayOf(getString(R.string.nr), getString(R.string.nr_detail))
 257             else -> arrayOf(getString(R.string.error), "")
 258         }
 259     }
 260
 261     private fun getAdditionalNetworkInfo(overrideNetworkType: Int) : Array<String> {
 262         // Return the string that corresponds to the override network type.
 263         return when(overrideNetworkType) {
 264             TelephonyDisplayInfo.OVERRIDE_NETWORK_TYPE_NONE -> arrayOf(getString(R.string.none), "")
 265             TelephonyDisplayInfo.OVERRIDE_NETWORK_TYPE_LTE_CA -> arrayOf(getString(R.string.lte_ca), getString(R.string.lte_ca_detail))
 266             TelephonyDisplayInfo.OVERRIDE_NETWORK_TYPE_LTE_ADVANCED_PRO -> arrayOf(getString(R.string.lte_advanced_pro), getString(R.string.lte_advanced_pro_detail))
 267             TelephonyDisplayInfo.OVERRIDE_NETWORK_TYPE_NR_NSA -> arrayOf(getString(R.string.lte_nr_nsa), getString(R.string.lte_nr_nsa_detail))
 268             TelephonyDisplayInfo.OVERRIDE_NETWORK_TYPE_NR_NSA_MMWAVE -> arrayOf(getString(R.string.lte_nr_nsa_mmwave), getString(R.string.lte_nr_nsa_mmwave_detail))
 269             else -> arrayOf(getString(R.string.error), "")
 270         }
 271     }
 272
 273     override fun onNavigationItemSelected(menuItem: MenuItem) : Boolean {
 274         // TODO.
 275         return true
 276     }
 277 }