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.core.view.GravityCompat
  42 import androidx.drawerlayout.widget.DrawerLayout
  43
  44 import com.google.android.material.navigation.NavigationView
  45
  46 import com.stoutner.privacycell.R
  47 import com.stoutner.privacycell.dialogs.PermissionsDialog
  48 import com.stoutner.privacycell.dialogs.PhonePermissionDialog
  49
  50 class PrivacyCell : AppCompatActivity(), NavigationView.OnNavigationItemSelectedListener, PhonePermissionDialog.StoragePermissionDialogListener {
  51     // Declare the class variables.
  52     private lateinit var context: Context
  53     private lateinit var telephonyManager: TelephonyManager
  54     private lateinit var actionBarDrawerToggle: ActionBarDrawerToggle
  55
  56     // Declare the views.
  57     private lateinit var drawerLayout: DrawerLayout
  58     private lateinit var secureFromStingrayImageView: ImageView
  59     private lateinit var secureFromStingrayTextView: TextView
  60     private lateinit var voiceNetworkTextView: TextView
  61     private lateinit var voiceNetworkDetailsTextView: TextView
  62     private lateinit var dataNetworkTextView: TextView
  63     private lateinit var dataNetworkDetailsTextView: TextView
  64     private lateinit var additionalNetworkInfoTextView: TextView
  65     private lateinit var additionalNetworkInfoDetailsTextView: TextView
  66
  67     override fun onCreate(savedInstanceState: Bundle?) {
  68         // Run the default commands.
  69         super.onCreate(savedInstanceState)
  70
  71         // Set the content view.
  72         setContentView(R.layout.privacy_cell_drawerlayout)
  73
  74         // Get handles for the views.
  75         drawerLayout = findViewById(R.id.drawerlayout)
  76         val toolbar = findViewById<Toolbar>(R.id.toolbar)
  77         secureFromStingrayImageView = findViewById(R.id.secure_from_stingray_imageview)
  78         secureFromStingrayTextView = findViewById(R.id.secure_from_stingray_textview)
  79         voiceNetworkTextView = findViewById(R.id.voice_network)
  80         voiceNetworkDetailsTextView = findViewById(R.id.voice_network_details)
  81         dataNetworkTextView = findViewById(R.id.data_network)
  82         dataNetworkDetailsTextView = findViewById(R.id.data_network_details)
  83         additionalNetworkInfoTextView = findViewById(R.id.additional_network_info)
  84         additionalNetworkInfoDetailsTextView = findViewById(R.id.additional_network_info_details)
  85         val navigationView = findViewById<NavigationView>(R.id.navigationview)
  86
  87         // Get handles for the context and the telephony manager.
  88         context = this
  89         telephonyManager = getSystemService(Context.TELEPHONY_SERVICE) as TelephonyManager
  90
  91         // Set the support action bar.
  92         setSupportActionBar(toolbar)
  93
  94         // Get a handle for the action bar.
  95         val actionBar = supportActionBar!!
  96
  97         // Set a custom view on the action bar.
  98         actionBar.setCustomView(R.layout.app_bar_textview)
  99
 100         // Display the custom view.
 101         actionBar.displayOptions = ActionBar.DISPLAY_SHOW_CUSTOM
 102
 103         // Define a hamburger icon at the start of the app bar.  It will be populated in `onPostCreate()`.
 104         actionBarDrawerToggle = ActionBarDrawerToggle(this, drawerLayout, toolbar, R.string.open_navigation_drawer, R.string.close_navigation_drawer)
 105
 106         // Listen for touches on the navigation menu.
 107         navigationView.setNavigationItemSelectedListener(this)
 108
 109         // Add a drawer listener.
 110         drawerLayout.addDrawerListener(object : DrawerLayout.DrawerListener {
 111             override fun onDrawerSlide(drawerView: View, slideOffset: Float) {
 112                 // Do nothing.
 113             }
 114
 115             override fun onDrawerOpened(drawerView: View) {
 116                 // Do nothing.
 117             }
 118
 119             override fun onDrawerClosed(drawerView: View) {
 120                 // Reset the drawer icon when the drawer is closed.  Otherwise, it is an arrow if the drawer is open when the app is restarted.
 121                 actionBarDrawerToggle.syncState()
 122             }
 123
 124             override fun onDrawerStateChanged(newState: Int) {
 125                 // Do nothing.
 126             }
 127         })
 128     }
 129
 130     override fun onPostCreate(savedInstanceState: Bundle?) {
 131         // Run the default commands.
 132         super.onPostCreate(savedInstanceState)
 133
 134         // Sync the state of the DrawerToggle after the default `onRestoreInstanceState()` has finished.  This creates the navigation drawer icon.
 135         actionBarDrawerToggle.syncState()
 136     }
 137
 138     override fun onResume() {
 139         // Run the default commands.
 140         super.onResume()
 141
 142         // 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.
 143         if (ActivityCompat.checkSelfPermission(this, Manifest.permission.READ_PHONE_STATE) == PackageManager.PERMISSION_GRANTED) {  // The storage permission has been granted.
 144             // Populate Privacy Cell.
 145             populatePrivacyCell()
 146         } else {  // The phone permission has not been granted.
 147             // Check if the user has previously denied the storage permission.
 148             if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.READ_PHONE_STATE)) {  // Show a dialog explaining the request first.
 149                 // Check to see if a phone permission dialog is already displayed.  This happens if the app is restarted when the dialog is shown.
 150                 if (supportFragmentManager.findFragmentByTag(getString(R.string.phone_permission)) == null) {  // No dialog is currently shown.
 151                     // Instantiate the phone permission dialog fragment.
 152                     val phonePermissionDialogFragment = PhonePermissionDialog()
 153
 154                     // Show the phone permission alert dialog.  The permission will be requested when the dialog is closed.
 155                     phonePermissionDialogFragment.show(supportFragmentManager, getString(R.string.phone_permission))
 156                 }
 157             } else {  // Show the permission request directly.
 158                 // Request the read phone state permission.  There is only one permission request in the app, so it has a request code of 0.
 159                 ActivityCompat.requestPermissions(this, arrayOf(Manifest.permission.READ_PHONE_STATE), 0)
 160             }
 161         }
 162     }
 163
 164     override fun onNavigationItemSelected(menuItem: MenuItem) : Boolean {
 165         // Get the menu item ID.
 166         val menuItemId = menuItem.itemId
 167
 168         // Run the commands that correspond to the selected menu item.
 169         if (menuItemId == R.id.permissions) {  // Permissions.
 170             // Instantiate the permissions dialog fragment.
 171             val permissionsDialogFragment = PermissionsDialog()
 172
 173             // Show the permissions alert dialog.
 174             permissionsDialogFragment.show(supportFragmentManager, getString(R.string.phone_permission))
 175         }
 176
 177         // Close the navigation drawer.
 178         drawerLayout.closeDrawer(GravityCompat.START)
 179
 180         // Consume the click.
 181         return true
 182     }
 183
 184     override fun onCloseStoragePermissionDialog() {
 185         // Request the read phone state permission.  There is only one permission request in the app, so it has a request code of 0.
 186         ActivityCompat.requestPermissions(this, arrayOf(Manifest.permission.READ_PHONE_STATE), 0)
 187     }
 188
 189     override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
 190         // Run the default commands.
 191         super.onRequestPermissionsResult(requestCode, permissions, grantResults)
 192
 193         //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).
 194         if (grantResults.isNotEmpty()) {
 195             // Check to see if the read phone state permission was granted.  If the dialog was canceled the grant results will be empty.
 196             if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {  // The read phone state permission was granted.
 197                 // Populate Privacy Cell.
 198                 populatePrivacyCell()
 199             } else {  // The read phone state permission was denied.
 200                 // Display the phone permission text on the main activity.
 201                 secureFromStingrayTextView.text = getString(R.string.phone_permission_text)
 202             }
 203         }
 204     }
 205
 206     private fun populatePrivacyCell() {
 207         // Listen to changes in the cell network state.
 208         telephonyManager.listen(object : PhoneStateListener() {
 209             override fun onDisplayInfoChanged(telephonyDisplayInfo: TelephonyDisplayInfo) {
 210                 // Populate the stingray security information.  <https://source.android.com/devices/tech/connect/acts-5g-testing>
 211                 if (telephonyDisplayInfo.networkType == TelephonyManager.NETWORK_TYPE_NR) {  // This is a secure 5G NR SA network.
 212                     // Populate the image view.
 213                     secureFromStingrayImageView.setImageDrawable(AppCompatResources.getDrawable(context, R.drawable.secure_5g_nr_sa))
 214
 215                     // Set the text.
 216                     secureFromStingrayTextView.text = getString(R.string.secure_from_stingray)
 217
 218                     // Set the text color.
 219                     secureFromStingrayTextView.setTextColor(getColor(R.color.blue_text))
 220                 } else {  // This is not a secure 5G NR SA network.
 221                     // Populate the image view.
 222                     secureFromStingrayImageView.setImageDrawable(AppCompatResources.getDrawable(context, R.drawable.not_secure))
 223
 224                     // Set the text.
 225                     secureFromStingrayTextView.text = getString(R.string.not_secure_from_stingray)
 226
 227                     // Set the text color.
 228                     secureFromStingrayTextView.setTextColor(getColor(R.color.red_text))
 229
 230                     // Get the strings that correspond to the network information.
 231                     val dataNetworkType = getNetworkType(telephonyDisplayInfo.networkType)
 232                     val additionalNetworkInfo = getAdditionalNetworkInfo(telephonyDisplayInfo.overrideNetworkType)
 233
 234                     // Populate the data network text views.
 235                     dataNetworkTextView.text = getString(R.string.data_network, dataNetworkType[0])
 236                     dataNetworkDetailsTextView.text = dataNetworkType[1]
 237                     additionalNetworkInfoTextView.text = getString(R.string.additional_network_info, additionalNetworkInfo[0])
 238                     additionalNetworkInfoDetailsTextView.text = additionalNetworkInfo[1]
 239                 }
 240             }
 241
 242             override fun onServiceStateChanged(serviceState: ServiceState) {
 243                 // 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).
 244                 val networkRegistrationInfo = serviceState.networkRegistrationInfoList[1]
 245
 246                 // Get the voice network type.
 247                 val voiceNetworkType = getNetworkType(networkRegistrationInfo.accessNetworkTechnology)
 248
 249                 // Populate the voice network text views.
 250                 voiceNetworkTextView.text = getString(R.string.voice_network, voiceNetworkType[0])
 251                 voiceNetworkDetailsTextView.text = voiceNetworkType[1]
 252             }
 253         }, PhoneStateListener.LISTEN_DISPLAY_INFO_CHANGED or PhoneStateListener.LISTEN_SERVICE_STATE)
 254     }
 255
 256     private fun getNetworkType(networkType: Int) : Array<String> {
 257         // Return the string that corresponds to the network type.
 258         return when(networkType) {
 259             TelephonyManager.NETWORK_TYPE_UNKNOWN -> arrayOf(getString(R.string.unknown), "")
 260             TelephonyManager.NETWORK_TYPE_GPRS -> arrayOf(getString(R.string.gprs), getString(R.string.gprs_detal))
 261             TelephonyManager.NETWORK_TYPE_EDGE -> arrayOf(getString(R.string.edge), getString(R.string.edge_detail))
 262             TelephonyManager.NETWORK_TYPE_UMTS -> arrayOf(getString(R.string.umts), getString(R.string.umts_detail))
 263             TelephonyManager.NETWORK_TYPE_CDMA -> arrayOf(getString(R.string.cdma), getString(R.string.cdma_detail))
 264             TelephonyManager.NETWORK_TYPE_EVDO_0 -> arrayOf(getString(R.string.evdo_0), getString(R.string.evdo_0_detail))
 265             TelephonyManager.NETWORK_TYPE_EVDO_A -> arrayOf(getString(R.string.evdo_a), getString(R.string.evdo_a_detail))
 266             TelephonyManager.NETWORK_TYPE_1xRTT -> arrayOf(getString(R.string.rtt), getString(R.string.rtt_detail))
 267             TelephonyManager.NETWORK_TYPE_HSDPA -> arrayOf(getString(R.string.hsdpa), getString(R.string.hsdpa_detail))
 268             TelephonyManager.NETWORK_TYPE_HSUPA -> arrayOf(getString(R.string.hsupa), getString(R.string.hsupa_detail))
 269             TelephonyManager.NETWORK_TYPE_HSPA -> arrayOf(getString(R.string.hspa), getString(R.string.hspa_detail))
 270             TelephonyManager.NETWORK_TYPE_IDEN -> arrayOf(getString(R.string.iden), getString(R.string.iden_detail))
 271             TelephonyManager.NETWORK_TYPE_EVDO_B -> arrayOf(getString(R.string.evdo_b), getString(R.string.evdo_b_detail))
 272             TelephonyManager.NETWORK_TYPE_LTE -> arrayOf(getString(R.string.lte), getString(R.string.lte_detail))
 273             TelephonyManager.NETWORK_TYPE_EHRPD -> arrayOf(getString(R.string.ehrpd), getString(R.string.ehrpd_detail))
 274             TelephonyManager.NETWORK_TYPE_HSPAP -> arrayOf(getString(R.string.hspap), getString(R.string.hspap_detail))
 275             TelephonyManager.NETWORK_TYPE_GSM -> arrayOf(getString(R.string.gsm), getString(R.string.gsm_detail))
 276             TelephonyManager.NETWORK_TYPE_TD_SCDMA -> arrayOf(getString(R.string.td_scdma), getString(R.string.td_scdma_detail))
 277             TelephonyManager.NETWORK_TYPE_IWLAN -> arrayOf(getString(R.string.iwlan), getString(R.string.iwlan_detail))
 278             TelephonyManager.NETWORK_TYPE_NR -> arrayOf(getString(R.string.nr), getString(R.string.nr_detail))
 279             else -> arrayOf(getString(R.string.error), "")
 280         }
 281     }
 282
 283     private fun getAdditionalNetworkInfo(overrideNetworkType: Int) : Array<String> {
 284         // Return the string that corresponds to the override network type.
 285         return when(overrideNetworkType) {
 286             TelephonyDisplayInfo.OVERRIDE_NETWORK_TYPE_NONE -> arrayOf(getString(R.string.none), "")
 287             TelephonyDisplayInfo.OVERRIDE_NETWORK_TYPE_LTE_CA -> arrayOf(getString(R.string.lte_ca), getString(R.string.lte_ca_detail))
 288             TelephonyDisplayInfo.OVERRIDE_NETWORK_TYPE_LTE_ADVANCED_PRO -> arrayOf(getString(R.string.lte_advanced_pro), getString(R.string.lte_advanced_pro_detail))
 289             TelephonyDisplayInfo.OVERRIDE_NETWORK_TYPE_NR_NSA -> arrayOf(getString(R.string.lte_nr_nsa), getString(R.string.lte_nr_nsa_detail))
 290             TelephonyDisplayInfo.OVERRIDE_NETWORK_TYPE_NR_NSA_MMWAVE -> arrayOf(getString(R.string.lte_nr_nsa_mmwave), getString(R.string.lte_nr_nsa_mmwave_detail))
 291             else -> arrayOf(getString(R.string.error), "")
 292         }
 293     }
 294 }