app/src/main/java/com/stoutner/privacybrowser/fragments/AboutVersionFragment.kt

   1 /*
   2  * Copyright 2016-2023 Soren Stoutner <soren@stoutner.com>.
   3  *
   4  * This file is part of Privacy Browser Android <https://www.stoutner.com/privacy-browser-android>.
   5  *
   6  * Privacy Browser Android 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 Browser Android 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 Android.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 package com.stoutner.privacybrowser.fragments
  21
  22 import android.annotation.SuppressLint
  23 import android.app.Activity
  24 import android.app.ActivityManager
  25 import android.content.ClipData
  26 import android.content.ClipboardManager
  27 import android.content.Context
  28 import android.content.Intent
  29 import android.content.pm.PackageManager
  30 import android.os.Build
  31 import android.os.Bundle
  32 import android.os.Handler
  33 import android.os.Looper
  34 import android.provider.OpenableColumns
  35 import android.text.SpannableStringBuilder
  36 import android.text.Spanned
  37 import android.text.style.ForegroundColorSpan
  38 import android.view.LayoutInflater
  39 import android.view.Menu
  40 import android.view.MenuInflater
  41 import android.view.MenuItem
  42 import android.view.View
  43 import android.view.ViewGroup
  44 import android.webkit.WebView
  45 import android.widget.TextView
  46
  47 import androidx.activity.result.contract.ActivityResultContracts
  48 import androidx.fragment.app.Fragment
  49 import androidx.webkit.WebViewCompat
  50
  51 import com.google.android.material.snackbar.Snackbar
  52
  53 import com.stoutner.privacybrowser.BuildConfig
  54 import com.stoutner.privacybrowser.R
  55 import com.stoutner.privacybrowser.coroutines.SaveAboutVersionImageCoroutine
  56
  57 import kotlinx.coroutines.CoroutineScope
  58 import kotlinx.coroutines.Dispatchers
  59 import kotlinx.coroutines.launch
  60 import kotlinx.coroutines.withContext
  61
  62 import java.io.ByteArrayInputStream
  63 import java.io.InputStream
  64 import java.lang.Exception
  65 import java.nio.charset.StandardCharsets
  66 import java.security.cert.CertificateException
  67 import java.security.cert.CertificateFactory
  68 import java.security.cert.X509Certificate
  69 import java.text.DateFormat
  70 import java.text.NumberFormat
  71
  72 import kotlin.text.StringBuilder
  73
  74 // Define the class constants.
  75 private const val BLOCKLIST_VERSIONS = "blocklist_versions"
  76 private const val MEBIBYTE = 1048576
  77
  78 class AboutVersionFragment : Fragment() {
  79     // Define the class variables.
  80     private var updateMemoryUsageBoolean = true
  81
  82     // Declare the class variables.
  83     private lateinit var blocklistVersions: Array<String>
  84     private lateinit var aboutVersionLayout: View
  85     private lateinit var appConsumedMemoryLabel: String
  86     private lateinit var appAvailableMemoryLabel: String
  87     private lateinit var appTotalMemoryLabel: String
  88     private lateinit var appMaximumMemoryLabel: String
  89     private lateinit var systemConsumedMemoryLabel: String
  90     private lateinit var systemAvailableMemoryLabel: String
  91     private lateinit var systemTotalMemoryLabel: String
  92     private lateinit var runtime: Runtime
  93     private lateinit var activityManager: ActivityManager
  94     private lateinit var memoryInfo: ActivityManager.MemoryInfo
  95     private lateinit var numberFormat: NumberFormat
  96     private lateinit var blueColorSpan: ForegroundColorSpan
  97
  98     // Declare the class views.
  99     private lateinit var privacyBrowserTextView: TextView
 100     private lateinit var versionTextView: TextView
 101     private lateinit var hardwareTextView: TextView
 102     private lateinit var brandTextView: TextView
 103     private lateinit var manufacturerTextView: TextView
 104     private lateinit var modelTextView: TextView
 105     private lateinit var deviceTextView: TextView
 106     private lateinit var bootloaderTextView: TextView
 107     private lateinit var radioTextView: TextView
 108     private lateinit var softwareTextView: TextView
 109     private lateinit var androidTextView: TextView
 110     private lateinit var securityPatchTextView: TextView
 111     private lateinit var buildTextView: TextView
 112     private lateinit var kernelTextView: TextView
 113     private lateinit var webViewProviderTextView: TextView
 114     private lateinit var webViewVersionTextView: TextView
 115     private lateinit var orbotTextView: TextView
 116     private lateinit var i2pTextView: TextView
 117     private lateinit var openKeychainTextView: TextView
 118     private lateinit var memoryUsageTextView: TextView
 119     private lateinit var appConsumedMemoryTextView: TextView
 120     private lateinit var appAvailableMemoryTextView: TextView
 121     private lateinit var appTotalMemoryTextView: TextView
 122     private lateinit var appMaximumMemoryTextView: TextView
 123     private lateinit var systemConsumedMemoryTextView: TextView
 124     private lateinit var systemAvailableMemoryTextView: TextView
 125     private lateinit var systemTotalMemoryTextView: TextView
 126     private lateinit var blocklistsTextView: TextView
 127     private lateinit var easyListTextView: TextView
 128     private lateinit var easyPrivacyTextView: TextView
 129     private lateinit var fanboyAnnoyanceTextView: TextView
 130     private lateinit var fanboySocialTextView: TextView
 131     private lateinit var ultraListTextView: TextView
 132     private lateinit var ultraPrivacyTextView: TextView
 133     private lateinit var packageSignatureTextView: TextView
 134     private lateinit var certificateIssuerDnTextView: TextView
 135     private lateinit var certificateSubjectDnTextView: TextView
 136     private lateinit var certificateStartDateTextView: TextView
 137     private lateinit var certificateEndDateTextView: TextView
 138     private lateinit var certificateVersionTextView: TextView
 139     private lateinit var certificateSerialNumberTextView: TextView
 140     private lateinit var certificateSignatureAlgorithmTextView: TextView
 141
 142     companion object {
 143         fun createTab(blocklistVersions: Array<String>): AboutVersionFragment {
 144             // Create an arguments bundle.
 145             val argumentsBundle = Bundle()
 146
 147             // Store the arguments in the bundle.
 148             argumentsBundle.putStringArray(BLOCKLIST_VERSIONS, blocklistVersions)
 149
 150             // Create a new instance of the tab fragment.
 151             val aboutVersionFragment = AboutVersionFragment()
 152
 153             // Add the arguments bundle to the fragment.
 154             aboutVersionFragment.arguments = argumentsBundle
 155
 156             // Return the new fragment.
 157             return aboutVersionFragment
 158         }
 159     }
 160
 161     // Define the save about version text activity result launcher.  It must be defined before `onCreate()` is run or the app will crash.
 162     private val saveAboutVersionTextActivityResultLauncher = registerForActivityResult(ActivityResultContracts.CreateDocument("text/plain")) { fileUri ->
 163         // Only save the file if the URI is not null, which happens if the user exited the file picker by pressing back.
 164         if (fileUri != null) {
 165             // Initialize the file name string from the file URI last path segment.
 166             var fileNameString = fileUri.lastPathSegment
 167
 168             // Query the exact file name if the API >= 26.
 169             if (Build.VERSION.SDK_INT >= 26) {
 170                 // Get a cursor from the content resolver.
 171                 val contentResolverCursor = requireActivity().contentResolver.query(fileUri, null, null, null)!!
 172
 173                 // Move to the first row.
 174                 contentResolverCursor.moveToFirst()
 175
 176                 // Get the file name from the cursor.
 177                 fileNameString = contentResolverCursor.getString(contentResolverCursor.getColumnIndexOrThrow(OpenableColumns.DISPLAY_NAME))
 178
 179                 // Close the cursor.
 180                 contentResolverCursor.close()
 181             }
 182
 183             try {
 184                 // Get the about version string.
 185                 val aboutVersionString = getAboutVersionString()
 186
 187                 // Open an output stream.
 188                 val outputStream = requireActivity().contentResolver.openOutputStream(fileUri)!!
 189
 190                 // Save about version using a coroutine with Dispatchers.IO.
 191                 CoroutineScope(Dispatchers.Main).launch {
 192                     withContext(Dispatchers.IO) {
 193                         // Write the about version string to the output stream.
 194                         outputStream.write(aboutVersionString.toByteArray(StandardCharsets.UTF_8))
 195
 196                         // Close the output stream.
 197                         outputStream.close()
 198                     }
 199                 }
 200
 201                 // Display a snackbar with the saved logcat information.
 202                 Snackbar.make(aboutVersionLayout, getString(R.string.saved, fileNameString), Snackbar.LENGTH_SHORT).show()
 203             } catch (exception: Exception) {
 204                 // Display a snackbar with the error message.
 205                 Snackbar.make(aboutVersionLayout, getString(R.string.error_saving_file, fileNameString, exception.toString()), Snackbar.LENGTH_INDEFINITE).show()
 206             }
 207         }
 208     }
 209
 210     // Define the save about version image activity result launcher.  It must be defined before `onCreate()` is run or the app will crash.
 211     private val saveAboutVersionImageActivityResultLauncher = registerForActivityResult(ActivityResultContracts.CreateDocument("image/png")) { fileUri ->
 212         // Save the file if the URI is not null, which happens if the user exits the file picker by pressing back.
 213         if (fileUri != null)
 214             SaveAboutVersionImageCoroutine.saveImage(requireActivity(), fileUri, aboutVersionLayout.findViewById(R.id.about_version_linearlayout))
 215     }
 216
 217     override fun onCreate(savedInstanceState: Bundle?) {
 218         // Run the default commands.
 219         super.onCreate(savedInstanceState)
 220
 221         // Store the arguments in class variables.
 222         blocklistVersions = requireArguments().getStringArray(BLOCKLIST_VERSIONS)!!
 223
 224         // Enable the options menu for this fragment.
 225         setHasOptionsMenu(true)
 226     }
 227
 228     override fun onCreateView(layoutInflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
 229         // Inflate the layout.  Setting false at the end of inflater.inflate does not attach the inflated layout as a child of container.  The fragment will take care of attaching the root automatically.
 230         aboutVersionLayout = layoutInflater.inflate(R.layout.about_version_scrollview, container, false)
 231
 232         // Get handles for the views.
 233         privacyBrowserTextView = aboutVersionLayout.findViewById(R.id.privacy_browser_textview)
 234         versionTextView = aboutVersionLayout.findViewById(R.id.version)
 235         hardwareTextView = aboutVersionLayout.findViewById(R.id.hardware)
 236         brandTextView = aboutVersionLayout.findViewById(R.id.brand)
 237         manufacturerTextView = aboutVersionLayout.findViewById(R.id.manufacturer)
 238         modelTextView = aboutVersionLayout.findViewById(R.id.model)
 239         deviceTextView = aboutVersionLayout.findViewById(R.id.device)
 240         bootloaderTextView = aboutVersionLayout.findViewById(R.id.bootloader)
 241         radioTextView = aboutVersionLayout.findViewById(R.id.radio)
 242         softwareTextView = aboutVersionLayout.findViewById(R.id.software)
 243         androidTextView = aboutVersionLayout.findViewById(R.id.android)
 244         securityPatchTextView = aboutVersionLayout.findViewById(R.id.security_patch)
 245         buildTextView = aboutVersionLayout.findViewById(R.id.build)
 246         kernelTextView = aboutVersionLayout.findViewById(R.id.kernel)
 247         webViewProviderTextView = aboutVersionLayout.findViewById(R.id.webview_provider)
 248         webViewVersionTextView = aboutVersionLayout.findViewById(R.id.webview_version)
 249         orbotTextView = aboutVersionLayout.findViewById(R.id.orbot)
 250         i2pTextView = aboutVersionLayout.findViewById(R.id.i2p)
 251         openKeychainTextView = aboutVersionLayout.findViewById(R.id.open_keychain)
 252         memoryUsageTextView = aboutVersionLayout.findViewById(R.id.memory_usage)
 253         appConsumedMemoryTextView = aboutVersionLayout.findViewById(R.id.app_consumed_memory)
 254         appAvailableMemoryTextView = aboutVersionLayout.findViewById(R.id.app_available_memory)
 255         appTotalMemoryTextView = aboutVersionLayout.findViewById(R.id.app_total_memory)
 256         appMaximumMemoryTextView = aboutVersionLayout.findViewById(R.id.app_maximum_memory)
 257         systemConsumedMemoryTextView = aboutVersionLayout.findViewById(R.id.system_consumed_memory)
 258         systemAvailableMemoryTextView = aboutVersionLayout.findViewById(R.id.system_available_memory)
 259         systemTotalMemoryTextView = aboutVersionLayout.findViewById(R.id.system_total_memory)
 260         blocklistsTextView = aboutVersionLayout.findViewById(R.id.blocklists)
 261         easyListTextView = aboutVersionLayout.findViewById(R.id.easylist)
 262         easyPrivacyTextView = aboutVersionLayout.findViewById(R.id.easyprivacy)
 263         fanboyAnnoyanceTextView = aboutVersionLayout.findViewById(R.id.fanboy_annoyance)
 264         fanboySocialTextView = aboutVersionLayout.findViewById(R.id.fanboy_social)
 265         ultraListTextView = aboutVersionLayout.findViewById(R.id.ultralist)
 266         ultraPrivacyTextView = aboutVersionLayout.findViewById(R.id.ultraprivacy)
 267         packageSignatureTextView = aboutVersionLayout.findViewById(R.id.package_signature)
 268         certificateIssuerDnTextView = aboutVersionLayout.findViewById(R.id.certificate_issuer_dn)
 269         certificateSubjectDnTextView = aboutVersionLayout.findViewById(R.id.certificate_subject_dn)
 270         certificateStartDateTextView = aboutVersionLayout.findViewById(R.id.certificate_start_date)
 271         certificateEndDateTextView = aboutVersionLayout.findViewById(R.id.certificate_end_date)
 272         certificateVersionTextView = aboutVersionLayout.findViewById(R.id.certificate_version)
 273         certificateSerialNumberTextView = aboutVersionLayout.findViewById(R.id.certificate_serial_number)
 274         certificateSignatureAlgorithmTextView = aboutVersionLayout.findViewById(R.id.certificate_signature_algorithm)
 275
 276         // Setup the labels.
 277         val version = getString(R.string.version_code, BuildConfig.VERSION_NAME, BuildConfig.VERSION_CODE)
 278         val brandLabel = getString(R.string.brand)
 279         val manufacturerLabel = getString(R.string.manufacturer)
 280         val modelLabel = getString(R.string.model)
 281         val deviceLabel = getString(R.string.device)
 282         val bootloaderLabel = getString(R.string.bootloader)
 283         val androidLabel = getString(R.string.android)
 284         val buildLabel = getString(R.string.build)
 285         val kernelLabel = getString(R.string.kernel)
 286         val webViewVersionLabel = getString(R.string.webview_version)
 287         appConsumedMemoryLabel = getString(R.string.app_consumed_memory)
 288         appAvailableMemoryLabel = getString(R.string.app_available_memory)
 289         appTotalMemoryLabel = getString(R.string.app_total_memory)
 290         appMaximumMemoryLabel = getString(R.string.app_maximum_memory)
 291         systemConsumedMemoryLabel = getString(R.string.system_consumed_memory)
 292         systemAvailableMemoryLabel = getString(R.string.system_available_memory)
 293         systemTotalMemoryLabel = getString(R.string.system_total_memory)
 294         val easyListLabel = getString(R.string.easylist_label)
 295         val easyPrivacyLabel = getString(R.string.easyprivacy_label)
 296         val fanboyAnnoyanceLabel = getString(R.string.fanboys_annoyance_label)
 297         val fanboySocialLabel = getString(R.string.fanboys_social_label)
 298         val ultraListLabel = getString(R.string.ultralist_label)
 299         val ultraPrivacyLabel = getString(R.string.ultraprivacy_label)
 300         val issuerDNLabel = getString(R.string.issuer_dn)
 301         val subjectDNLabel = getString(R.string.subject_dn)
 302         val startDateLabel = getString(R.string.start_date)
 303         val endDateLabel = getString(R.string.end_date)
 304         val certificateVersionLabel = getString(R.string.certificate_version)
 305         val serialNumberLabel = getString(R.string.serial_number)
 306         val signatureAlgorithmLabel = getString(R.string.signature_algorithm)
 307
 308         // The WebView layout is only used to get the default user agent from `bare_webview`.  It is not used to render content on the screen.
 309         // Once the minimum API >= 26 this can be accomplished with the WebView package info.
 310         val webViewLayout = layoutInflater.inflate(R.layout.bare_webview, container, false)
 311         val tabLayoutWebView = webViewLayout.findViewById<WebView>(R.id.bare_webview)
 312         val userAgentString = tabLayoutWebView.settings.userAgentString
 313
 314         // Get the device's information and store it in strings.
 315         val brand = Build.BRAND
 316         val manufacturer = Build.MANUFACTURER
 317         val model = Build.MODEL
 318         val device = Build.DEVICE
 319         val bootloader = Build.BOOTLOADER
 320         val radio = Build.getRadioVersion()
 321         val android = getString(R.string.api, Build.VERSION.RELEASE, Build.VERSION.SDK_INT)
 322         val build = Build.DISPLAY
 323         val kernel = System.getProperty("os.version")
 324
 325         // Get the WebView version, selecting the substring that begins after `Chrome/` and goes until the next ` `.
 326         val webView = userAgentString.substring(userAgentString.indexOf("Chrome/") + 7, userAgentString.indexOf(" ", userAgentString.indexOf("Chrome/")))
 327
 328         // Get the Orbot version name if Orbot is installed.
 329         val orbot: String = try {
 330             // Store the version name.  The newer `getPackageInfo()` may be used once the minimum API >= 33.
 331             @Suppress("DEPRECATION")
 332             requireContext().packageManager.getPackageInfo("org.torproject.android", 0).versionName
 333         } catch (exception: PackageManager.NameNotFoundException) {  // Orbot is not installed.
 334             // Store an empty string.
 335             ""
 336         }
 337
 338         // Get the I2P version name if I2P is installed.
 339         val i2p: String = try {
 340             // Check to see if the F-Droid flavor is installed.  The newer `getPackageInfo()` may be used once the minimum API >= 33.
 341             @Suppress("DEPRECATION")
 342             requireContext().getString(R.string.fdroid_flavor, requireContext().packageManager.getPackageInfo("net.i2p.android.router", 0).versionName)
 343         } catch (exception: PackageManager.NameNotFoundException) {  // The F-Droid flavor is not installed.
 344             try {
 345                 // Check to see if the F-Droid flavor is installed.  The newer `getPackageInfo()` may be used once the minimum API >= 33.
 346                 @Suppress("DEPRECATION")
 347                 requireContext().getString(R.string.google_play_flavor, requireContext().packageManager.getPackageInfo("net.i2p.android", 0).versionName)
 348             } catch (exception: PackageManager.NameNotFoundException) {  // The Google Play flavor is not installed either.
 349                 // Store an empty string.
 350                 ""
 351             }
 352         }
 353
 354         // Get the OpenKeychain version name if it is installed.
 355         val openKeychain: String = try {
 356             // Store the version name.  The newer `getPackageInfo()` may be used once the minimum API >= 33.
 357             @Suppress("DEPRECATION")
 358             requireContext().packageManager.getPackageInfo("org.sufficientlysecure.keychain", 0).versionName
 359         } catch (exception: PackageManager.NameNotFoundException) {  // OpenKeychain is not installed.
 360             // Store an empty string.
 361             ""
 362         }
 363
 364         // Create a spannable string builder for the hardware and software text views that need multiple colors of text.
 365         val brandStringBuilder = SpannableStringBuilder(brandLabel + brand)
 366         val manufacturerStringBuilder = SpannableStringBuilder(manufacturerLabel + manufacturer)
 367         val modelStringBuilder = SpannableStringBuilder(modelLabel + model)
 368         val deviceStringBuilder = SpannableStringBuilder(deviceLabel + device)
 369         val bootloaderStringBuilder = SpannableStringBuilder(bootloaderLabel + bootloader)
 370         val androidStringBuilder = SpannableStringBuilder(androidLabel + android)
 371         val buildStringBuilder = SpannableStringBuilder(buildLabel + build)
 372         val kernelStringBuilder = SpannableStringBuilder(kernelLabel + kernel)
 373         val webViewVersionStringBuilder = SpannableStringBuilder(webViewVersionLabel + webView)
 374         val easyListStringBuilder = SpannableStringBuilder(easyListLabel + blocklistVersions[0])
 375         val easyPrivacyStringBuilder = SpannableStringBuilder(easyPrivacyLabel + blocklistVersions[1])
 376         val fanboyAnnoyanceStringBuilder = SpannableStringBuilder(fanboyAnnoyanceLabel + blocklistVersions[2])
 377         val fanboySocialStringBuilder = SpannableStringBuilder(fanboySocialLabel + blocklistVersions[3])
 378         val ultraListStringBuilder = SpannableStringBuilder(ultraListLabel + blocklistVersions[4])
 379         val ultraPrivacyStringBuilder = SpannableStringBuilder(ultraPrivacyLabel + blocklistVersions[5])
 380
 381         // Set the blue color span according to the theme.  The deprecated `getColor()` must be used until the minimum API >= 23.
 382         blueColorSpan = ForegroundColorSpan(requireContext().getColor(R.color.alt_blue_text))
 383
 384         // Set the spans to display the device information in blue.  `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
 385         brandStringBuilder.setSpan(blueColorSpan, brandLabel.length, brandStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 386         manufacturerStringBuilder.setSpan(blueColorSpan, manufacturerLabel.length, manufacturerStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 387         modelStringBuilder.setSpan(blueColorSpan, modelLabel.length, modelStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 388         deviceStringBuilder.setSpan(blueColorSpan, deviceLabel.length, deviceStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 389         bootloaderStringBuilder.setSpan(blueColorSpan, bootloaderLabel.length, bootloaderStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 390         androidStringBuilder.setSpan(blueColorSpan, androidLabel.length, androidStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 391         buildStringBuilder.setSpan(blueColorSpan, buildLabel.length, buildStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 392         kernelStringBuilder.setSpan(blueColorSpan, kernelLabel.length, kernelStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 393         webViewVersionStringBuilder.setSpan(blueColorSpan, webViewVersionLabel.length, webViewVersionStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 394         easyListStringBuilder.setSpan(blueColorSpan, easyListLabel.length, easyListStringBuilder.length, Spanned.SPAN_INCLUSIVE_EXCLUSIVE)
 395         easyPrivacyStringBuilder.setSpan(blueColorSpan, easyPrivacyLabel.length, easyPrivacyStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 396         fanboyAnnoyanceStringBuilder.setSpan(blueColorSpan, fanboyAnnoyanceLabel.length, fanboyAnnoyanceStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 397         fanboySocialStringBuilder.setSpan(blueColorSpan, fanboySocialLabel.length, fanboySocialStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 398         ultraListStringBuilder.setSpan(blueColorSpan, ultraListLabel.length, ultraListStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 399         ultraPrivacyStringBuilder.setSpan(blueColorSpan, ultraPrivacyLabel.length, ultraPrivacyStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 400
 401         // Display the strings in the text boxes.
 402         versionTextView.text = version
 403         brandTextView.text = brandStringBuilder
 404         manufacturerTextView.text = manufacturerStringBuilder
 405         modelTextView.text = modelStringBuilder
 406         deviceTextView.text = deviceStringBuilder
 407         bootloaderTextView.text = bootloaderStringBuilder
 408         androidTextView.text = androidStringBuilder
 409         buildTextView.text = buildStringBuilder
 410         kernelTextView.text = kernelStringBuilder
 411         webViewVersionTextView.text = webViewVersionStringBuilder
 412         easyListTextView.text = easyListStringBuilder
 413         easyPrivacyTextView.text = easyPrivacyStringBuilder
 414         fanboyAnnoyanceTextView.text = fanboyAnnoyanceStringBuilder
 415         fanboySocialTextView.text = fanboySocialStringBuilder
 416         ultraListTextView.text = ultraListStringBuilder
 417         ultraPrivacyTextView.text = ultraPrivacyStringBuilder
 418
 419         // Only populate the radio text view if there is a radio in the device.
 420         // Null must be checked because some Samsung tablets report a null value for the radio instead of an empty string.  Grrrr.  <https://redmine.stoutner.com/issues/701>
 421         if (radio != null && radio.isNotEmpty()) {
 422             // Setup the label.
 423             val radioLabel = getString(R.string.radio)
 424
 425             // Create a spannable string builder.
 426             val radioStringBuilder = SpannableStringBuilder(radioLabel + radio)
 427
 428             // Set the span to display the radio in blue.
 429             radioStringBuilder.setSpan(blueColorSpan, radioLabel.length, radioStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 430
 431             // Display the string in the text view.
 432             radioTextView.text = radioStringBuilder
 433         } else {  // This device does not have a radio.
 434             // Hide the radio text view.
 435             radioTextView.visibility = View.GONE
 436         }
 437
 438         // Setup the label.
 439         val securityPatchLabel = getString(R.string.security_patch)
 440
 441         // Get the security patch version.
 442         val securityPatch = Build.VERSION.SECURITY_PATCH
 443
 444         // Create a spannable string builder.
 445         val securityPatchStringBuilder = SpannableStringBuilder(securityPatchLabel + securityPatch)
 446
 447         // Set the span to display the security patch version in blue.
 448         securityPatchStringBuilder.setSpan(blueColorSpan, securityPatchLabel.length, securityPatchStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 449
 450         // Display the string in the text view.
 451         securityPatchTextView.text = securityPatchStringBuilder
 452
 453         // Create the WebView provider label.
 454         val webViewProviderLabel = getString(R.string.webview_provider)
 455
 456         // Get the current WebView package info.
 457         val webViewPackageInfo = WebViewCompat.getCurrentWebViewPackage(requireContext())!!
 458
 459         // Get the WebView provider name.
 460         val webViewPackageName = webViewPackageInfo.packageName
 461
 462         // Create the spannable string builder.
 463         val webViewProviderStringBuilder = SpannableStringBuilder(webViewProviderLabel + webViewPackageName)
 464
 465         // Apply the coloration.
 466         webViewProviderStringBuilder.setSpan(blueColorSpan, webViewProviderLabel.length, webViewProviderStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 467
 468         // Display the WebView provider.
 469         webViewProviderTextView.text = webViewProviderStringBuilder
 470
 471         // Only populate the Orbot text view if it is installed.
 472         if (orbot.isNotEmpty()) {
 473             // Setup the label.
 474             val orbotLabel = getString(R.string.orbot)
 475
 476             // Create a spannable string builder.
 477             val orbotStringBuilder = SpannableStringBuilder(orbotLabel + orbot)
 478
 479             // Set the span to display the Orbot version.
 480             orbotStringBuilder.setSpan(blueColorSpan, orbotLabel.length, orbotStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 481
 482             // Display the string in the text view.
 483             orbotTextView.text = orbotStringBuilder
 484         } else {  // Orbot is not installed.
 485             // Hide the Orbot text view.
 486             orbotTextView.visibility = View.GONE
 487         }
 488
 489         // Only populate the I2P text view if it is installed.
 490         if (i2p.isNotEmpty()) {
 491             // Setup the label.
 492             val i2pLabel = getString(R.string.i2p)
 493
 494             // Create a spannable string builder.
 495             val i2pStringBuilder = SpannableStringBuilder(i2pLabel + i2p)
 496
 497             // Set the span to display the I2P version.
 498             i2pStringBuilder.setSpan(blueColorSpan, i2pLabel.length, i2pStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 499
 500             // Display the string in the text view.
 501             i2pTextView.text = i2pStringBuilder
 502         } else {  // I2P is not installed.
 503             // Hide the I2P text view.
 504             i2pTextView.visibility = View.GONE
 505         }
 506
 507         // Only populate the OpenKeychain text view if it is installed.
 508         if (openKeychain.isNotEmpty()) {
 509             // Setup the label.
 510             val openKeychainLabel = getString(R.string.openkeychain)
 511
 512             // Create a spannable string builder.
 513             val openKeychainStringBuilder = SpannableStringBuilder(openKeychainLabel + openKeychain)
 514
 515             // Set the span to display the OpenKeychain version.
 516             openKeychainStringBuilder.setSpan(blueColorSpan, openKeychainLabel.length, openKeychainStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 517
 518             // Display the string in the text view.
 519             openKeychainTextView.text = openKeychainStringBuilder
 520         } else {  //OpenKeychain is not installed.
 521             // Hide the OpenKeychain text view.
 522             openKeychainTextView.visibility = View.GONE
 523         }
 524
 525         // Display the package signature.
 526         try {
 527             // Get the first package signature.  Suppress the lint warning about the need to be careful in implementing comparison of certificates for security purposes.
 528             // Once the minimum API >= 28, `GET_SIGNING_CERTIFICATES` can be used instead.  Once the minimum API >= 33, the newer `getPackageInfo()` may be used.
 529             @Suppress("DEPRECATION")
 530             @SuppressLint("PackageManagerGetSignatures") val packageSignature = requireContext().packageManager.getPackageInfo(requireContext().packageName,PackageManager.GET_SIGNATURES)
 531                 .signatures[0]
 532
 533             // Convert the signature to a byte array input stream.
 534             val certificateByteArrayInputStream: InputStream = ByteArrayInputStream(packageSignature.toByteArray())
 535
 536             // Display the certificate information on the screen.
 537             try {
 538                 // Instantiate a certificate factory.
 539                 val certificateFactory = CertificateFactory.getInstance("X509")
 540
 541                 // Generate an X509 certificate.
 542                 val x509Certificate = certificateFactory.generateCertificate(certificateByteArrayInputStream) as X509Certificate
 543
 544                 // Store the individual sections of the certificate.
 545                 val issuerDNPrincipal = x509Certificate.issuerDN
 546                 val subjectDNPrincipal = x509Certificate.subjectDN
 547                 val startDate = x509Certificate.notBefore
 548                 val endDate = x509Certificate.notAfter
 549                 val certificateVersion = x509Certificate.version
 550                 val serialNumberBigInteger = x509Certificate.serialNumber
 551                 val signatureAlgorithmNameString = x509Certificate.sigAlgName
 552
 553                 // Create a spannable string builder for each text view that needs multiple colors of text.
 554                 val issuerDNStringBuilder = SpannableStringBuilder(issuerDNLabel + issuerDNPrincipal.toString())
 555                 val subjectDNStringBuilder = SpannableStringBuilder(subjectDNLabel + subjectDNPrincipal.toString())
 556                 val startDateStringBuilder = SpannableStringBuilder(startDateLabel + DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.LONG).format(startDate))
 557                 val endDataStringBuilder = SpannableStringBuilder(endDateLabel + DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.LONG).format(endDate))
 558                 val certificateVersionStringBuilder = SpannableStringBuilder(certificateVersionLabel + certificateVersion)
 559                 val serialNumberStringBuilder = SpannableStringBuilder(serialNumberLabel + serialNumberBigInteger)
 560                 val signatureAlgorithmStringBuilder = SpannableStringBuilder(signatureAlgorithmLabel + signatureAlgorithmNameString)
 561
 562                 // Setup the spans to display the device information in blue.  `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
 563                 issuerDNStringBuilder.setSpan(blueColorSpan, issuerDNLabel.length, issuerDNStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 564                 subjectDNStringBuilder.setSpan(blueColorSpan, subjectDNLabel.length, subjectDNStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 565                 startDateStringBuilder.setSpan(blueColorSpan, startDateLabel.length, startDateStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 566                 endDataStringBuilder.setSpan(blueColorSpan, endDateLabel.length, endDataStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 567                 certificateVersionStringBuilder.setSpan(blueColorSpan, certificateVersionLabel.length, certificateVersionStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 568                 serialNumberStringBuilder.setSpan(blueColorSpan, serialNumberLabel.length, serialNumberStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 569                 signatureAlgorithmStringBuilder.setSpan(blueColorSpan, signatureAlgorithmLabel.length, signatureAlgorithmStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 570
 571                 // Display the strings in the text boxes.
 572                 certificateIssuerDnTextView.text = issuerDNStringBuilder
 573                 certificateSubjectDnTextView.text = subjectDNStringBuilder
 574                 certificateStartDateTextView.text = startDateStringBuilder
 575                 certificateEndDateTextView.text = endDataStringBuilder
 576                 certificateVersionTextView.text = certificateVersionStringBuilder
 577                 certificateSerialNumberTextView.text = serialNumberStringBuilder
 578                 certificateSignatureAlgorithmTextView.text = signatureAlgorithmStringBuilder
 579             } catch (certificateException: CertificateException) {
 580                 // Do nothing if there is a certificate error.
 581             }
 582
 583             // Get a handle for the runtime.
 584             runtime = Runtime.getRuntime()
 585
 586             // Get a handle for the activity manager.
 587             activityManager = requireActivity().getSystemService(Context.ACTIVITY_SERVICE) as ActivityManager
 588
 589             // Instantiate a memory info variable.
 590             memoryInfo = ActivityManager.MemoryInfo()
 591
 592             // Define a number format.
 593             numberFormat = NumberFormat.getInstance()
 594
 595             // Set the minimum and maximum number of fraction digits.
 596             numberFormat.minimumFractionDigits = 2
 597             numberFormat.maximumFractionDigits = 2
 598
 599             // Update the memory usage.
 600             updateMemoryUsage(requireActivity())
 601         } catch (e: PackageManager.NameNotFoundException) {
 602             // Do nothing if the package manager says Privacy Browser isn't installed.
 603         }
 604
 605         // Scroll the tab if the saved instance state is not null.
 606         if (savedInstanceState != null) {
 607             aboutVersionLayout.post {
 608                 aboutVersionLayout.scrollX = savedInstanceState.getInt("scroll_x")
 609                 aboutVersionLayout.scrollY = savedInstanceState.getInt("scroll_y")
 610             }
 611         }
 612
 613         // Return the tab layout.
 614         return aboutVersionLayout
 615     }
 616
 617     override fun onCreateOptionsMenu(menu: Menu, menuInflater: MenuInflater) {
 618         // Inflate the about version menu.
 619         menuInflater.inflate(R.menu.about_version_options_menu, menu)
 620
 621         // Run the default commands.
 622         super.onCreateOptionsMenu(menu, menuInflater)
 623     }
 624
 625     override fun onOptionsItemSelected(menuItem: MenuItem): Boolean {
 626         // Run the appropriate commands.
 627         when (menuItem.itemId) {
 628             R.id.copy -> {  // Copy.
 629                 // Get the about version string.
 630                 val aboutVersionString = getAboutVersionString()
 631
 632                 // Get a handle for the clipboard manager.
 633                 val clipboardManager = (requireActivity().getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager)
 634
 635                 // Save the about version string in a clip data.
 636                 val aboutVersionClipData = ClipData.newPlainText(getString(R.string.about), aboutVersionString)
 637
 638                 // Place the clip data on the clipboard.
 639                 clipboardManager.setPrimaryClip(aboutVersionClipData)
 640
 641                 // Display a snackbar.
 642                 Snackbar.make(aboutVersionLayout, R.string.version_info_copied, Snackbar.LENGTH_SHORT).show()
 643
 644                 // Consume the event.
 645                 return true
 646             }
 647
 648             R.id.share -> {  // Share.
 649                 // Get the about version string.
 650                 val aboutString = getAboutVersionString()
 651
 652                 // Create an email intent.
 653                 val emailIntent = Intent(Intent.ACTION_SEND)
 654
 655                 // Add the about version string to the intent.
 656                 emailIntent.putExtra(Intent.EXTRA_TEXT, aboutString)
 657
 658                 // Set the MIME type.
 659                 emailIntent.type = "text/plain"
 660
 661                 // Set the intent to open in a new task.
 662                 emailIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
 663
 664                 // Make it so.
 665                 startActivity(Intent.createChooser(emailIntent, getString(R.string.share)))
 666
 667                 // Consume the event.
 668                 return true
 669             }
 670
 671             R.id.save_text -> {  // Save text.
 672                 // Open the file picker.
 673                 saveAboutVersionTextActivityResultLauncher.launch(getString(R.string.privacy_browser_version_txt, BuildConfig.VERSION_NAME))
 674
 675                 // Consume the event.
 676                 return true
 677             }
 678
 679             R.id.save_image -> {  // Save image.
 680                 // Open the file picker.
 681                 saveAboutVersionImageActivityResultLauncher.launch(getString(R.string.privacy_browser_version_png, BuildConfig.VERSION_NAME))
 682
 683                 // Consume the event.
 684                 return true
 685             }
 686             else -> {  // The home button was selected.
 687                 // Run the parents class on return.
 688                 return super.onOptionsItemSelected(menuItem)
 689             }
 690         }
 691     }
 692
 693     override fun onSaveInstanceState(savedInstanceState: Bundle) {
 694         // Run the default commands.
 695         super.onSaveInstanceState(savedInstanceState)
 696
 697         // Save the scroll positions.
 698         savedInstanceState.putInt("scroll_x", aboutVersionLayout.scrollX)
 699         savedInstanceState.putInt("scroll_y", aboutVersionLayout.scrollY)
 700     }
 701
 702     override fun onPause() {
 703         // Run the default commands.
 704         super.onPause()
 705
 706         // Pause the updating of the memory usage.
 707         updateMemoryUsageBoolean = false
 708     }
 709
 710     override fun onResume() {
 711         // Run the default commands.
 712         super.onResume()
 713
 714         // Resume the updating of the memory usage.
 715         updateMemoryUsageBoolean = true
 716     }
 717
 718     private fun updateMemoryUsage(activity: Activity) {
 719         try {
 720             // Update the memory usage if enabled.
 721             if (updateMemoryUsageBoolean) {
 722                 // Populate the memory info variable.
 723                 activityManager.getMemoryInfo(memoryInfo)
 724
 725                 // Get the app memory information.
 726                 val appAvailableMemoryLong = runtime.freeMemory()
 727                 val appTotalMemoryLong = runtime.totalMemory()
 728                 val appMaximumMemoryLong = runtime.maxMemory()
 729
 730                 // Calculate the app consumed memory.
 731                 val appConsumedMemoryLong = appTotalMemoryLong - appAvailableMemoryLong
 732
 733                 // Get the system memory information.
 734                 val systemTotalMemoryLong = memoryInfo.totalMem
 735                 val systemAvailableMemoryLong = memoryInfo.availMem
 736
 737                 // Calculate the system consumed memory.
 738                 val systemConsumedMemoryLong = systemTotalMemoryLong - systemAvailableMemoryLong
 739
 740                 // Convert the memory information into mebibytes.
 741                 val appConsumedMemoryFloat = appConsumedMemoryLong.toFloat() / MEBIBYTE
 742                 val appAvailableMemoryFloat = appAvailableMemoryLong.toFloat() / MEBIBYTE
 743                 val appTotalMemoryFloat = appTotalMemoryLong.toFloat() / MEBIBYTE
 744                 val appMaximumMemoryFloat = appMaximumMemoryLong.toFloat() / MEBIBYTE
 745                 val systemConsumedMemoryFloat = systemConsumedMemoryLong.toFloat() / MEBIBYTE
 746                 val systemAvailableMemoryFloat = systemAvailableMemoryLong.toFloat() / MEBIBYTE
 747                 val systemTotalMemoryFloat = systemTotalMemoryLong.toFloat() / MEBIBYTE
 748
 749                 // Get the mebibyte string.
 750                 val mebibyte = getString(R.string.mebibyte)
 751
 752                 // Calculate the mebibyte length.
 753                 val mebibyteLength = mebibyte.length
 754
 755                 // Create spannable string builders.
 756                 val appConsumedMemoryStringBuilder = SpannableStringBuilder(appConsumedMemoryLabel + numberFormat.format(appConsumedMemoryFloat.toDouble()) + " " + mebibyte)
 757                 val appAvailableMemoryStringBuilder = SpannableStringBuilder(appAvailableMemoryLabel + numberFormat.format(appAvailableMemoryFloat.toDouble()) + " " + mebibyte)
 758                 val appTotalMemoryStringBuilder = SpannableStringBuilder(appTotalMemoryLabel + numberFormat.format(appTotalMemoryFloat.toDouble()) + " " + mebibyte)
 759                 val appMaximumMemoryStringBuilder = SpannableStringBuilder(appMaximumMemoryLabel + numberFormat.format(appMaximumMemoryFloat.toDouble()) + " " + mebibyte)
 760                 val systemConsumedMemoryStringBuilder = SpannableStringBuilder(systemConsumedMemoryLabel + numberFormat.format(systemConsumedMemoryFloat.toDouble()) + " " + mebibyte)
 761                 val systemAvailableMemoryStringBuilder = SpannableStringBuilder(systemAvailableMemoryLabel + numberFormat.format(systemAvailableMemoryFloat.toDouble()) + " " + mebibyte)
 762                 val systemTotalMemoryStringBuilder = SpannableStringBuilder(systemTotalMemoryLabel + numberFormat.format(systemTotalMemoryFloat.toDouble()) + " " + mebibyte)
 763
 764                 // Setup the spans to display the memory information in blue.  `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
 765                 appConsumedMemoryStringBuilder.setSpan(blueColorSpan, appConsumedMemoryLabel.length, appConsumedMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 766                 appAvailableMemoryStringBuilder.setSpan(blueColorSpan, appAvailableMemoryLabel.length, appAvailableMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 767                 appTotalMemoryStringBuilder.setSpan(blueColorSpan, appTotalMemoryLabel.length, appTotalMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 768                 appMaximumMemoryStringBuilder.setSpan(blueColorSpan, appMaximumMemoryLabel.length, appMaximumMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 769                 systemConsumedMemoryStringBuilder.setSpan(blueColorSpan, systemConsumedMemoryLabel.length, systemConsumedMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 770                 systemAvailableMemoryStringBuilder.setSpan(blueColorSpan, systemAvailableMemoryLabel.length, systemAvailableMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 771                 systemTotalMemoryStringBuilder.setSpan(blueColorSpan, systemTotalMemoryLabel.length, systemTotalMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 772
 773                 // Display the string in the text boxes.
 774                 appConsumedMemoryTextView.text = appConsumedMemoryStringBuilder
 775                 appAvailableMemoryTextView.text = appAvailableMemoryStringBuilder
 776                 appTotalMemoryTextView.text = appTotalMemoryStringBuilder
 777                 appMaximumMemoryTextView.text = appMaximumMemoryStringBuilder
 778                 systemConsumedMemoryTextView.text = systemConsumedMemoryStringBuilder
 779                 systemAvailableMemoryTextView.text = systemAvailableMemoryStringBuilder
 780                 systemTotalMemoryTextView.text = systemTotalMemoryStringBuilder
 781             }
 782
 783             // Schedule another memory update if the activity has not been destroyed.
 784             if (!activity.isDestroyed) {
 785                 // Create a handler to update the memory usage.
 786                 val updateMemoryUsageHandler = Handler(Looper.getMainLooper())
 787
 788                 // Create a runnable to update the memory usage.
 789                 val updateMemoryUsageRunnable = Runnable { updateMemoryUsage(activity) }
 790
 791                 // Update the memory usage after 1000 milliseconds
 792                 updateMemoryUsageHandler.postDelayed(updateMemoryUsageRunnable, 1000)
 793             }
 794         } catch (exception: Exception) {
 795             // Do nothing.
 796         }
 797     }
 798
 799     private fun getAboutVersionString(): String {
 800         // Initialize an about version string builder.
 801         val aboutVersionStringBuilder = StringBuilder()
 802
 803         // Populate the about version string builder.
 804         aboutVersionStringBuilder.append(privacyBrowserTextView.text)
 805         aboutVersionStringBuilder.append("\n")
 806         aboutVersionStringBuilder.append(versionTextView.text)
 807         aboutVersionStringBuilder.append("\n\n")
 808         aboutVersionStringBuilder.append(hardwareTextView.text)
 809         aboutVersionStringBuilder.append("\n")
 810         aboutVersionStringBuilder.append(brandTextView.text)
 811         aboutVersionStringBuilder.append("\n")
 812         aboutVersionStringBuilder.append(manufacturerTextView.text)
 813         aboutVersionStringBuilder.append("\n")
 814         aboutVersionStringBuilder.append(modelTextView.text)
 815         aboutVersionStringBuilder.append("\n")
 816         aboutVersionStringBuilder.append(deviceTextView.text)
 817         aboutVersionStringBuilder.append("\n")
 818         aboutVersionStringBuilder.append(bootloaderTextView.text)
 819         aboutVersionStringBuilder.append("\n")
 820         if (radioTextView.visibility == View.VISIBLE) {
 821             aboutVersionStringBuilder.append(radioTextView.text)
 822             aboutVersionStringBuilder.append("\n")
 823         }
 824         aboutVersionStringBuilder.append("\n")
 825         aboutVersionStringBuilder.append(softwareTextView.text)
 826         aboutVersionStringBuilder.append("\n")
 827         aboutVersionStringBuilder.append(androidTextView.text)
 828         aboutVersionStringBuilder.append("\n")
 829         if (securityPatchTextView.visibility == View.VISIBLE) {
 830             aboutVersionStringBuilder.append(securityPatchTextView.text)
 831             aboutVersionStringBuilder.append("\n")
 832         }
 833         aboutVersionStringBuilder.append(buildTextView.text)
 834         aboutVersionStringBuilder.append("\n")
 835         aboutVersionStringBuilder.append(kernelTextView.text)
 836         aboutVersionStringBuilder.append("\n")
 837         if (webViewProviderTextView.visibility == View.VISIBLE) {
 838             aboutVersionStringBuilder.append(webViewProviderTextView.text)
 839             aboutVersionStringBuilder.append("\n")
 840         }
 841         aboutVersionStringBuilder.append(webViewVersionTextView.text)
 842         aboutVersionStringBuilder.append("\n")
 843         if (orbotTextView.visibility == View.VISIBLE) {
 844             aboutVersionStringBuilder.append(orbotTextView.text)
 845             aboutVersionStringBuilder.append("\n")
 846         }
 847         if (i2pTextView.visibility == View.VISIBLE) {
 848             aboutVersionStringBuilder.append(i2pTextView.text)
 849             aboutVersionStringBuilder.append("\n")
 850         }
 851         if (openKeychainTextView.visibility == View.VISIBLE) {
 852             aboutVersionStringBuilder.append(openKeychainTextView.text)
 853             aboutVersionStringBuilder.append("\n")
 854         }
 855         aboutVersionStringBuilder.append("\n")
 856         aboutVersionStringBuilder.append(memoryUsageTextView.text)
 857         aboutVersionStringBuilder.append("\n")
 858         aboutVersionStringBuilder.append(appConsumedMemoryTextView.text)
 859         aboutVersionStringBuilder.append("\n")
 860         aboutVersionStringBuilder.append(appAvailableMemoryTextView.text)
 861         aboutVersionStringBuilder.append("\n")
 862         aboutVersionStringBuilder.append(appTotalMemoryTextView.text)
 863         aboutVersionStringBuilder.append("\n")
 864         aboutVersionStringBuilder.append(appMaximumMemoryTextView.text)
 865         aboutVersionStringBuilder.append("\n")
 866         aboutVersionStringBuilder.append(systemConsumedMemoryTextView.text)
 867         aboutVersionStringBuilder.append("\n")
 868         aboutVersionStringBuilder.append(systemAvailableMemoryTextView.text)
 869         aboutVersionStringBuilder.append("\n")
 870         aboutVersionStringBuilder.append(systemTotalMemoryTextView.text)
 871         aboutVersionStringBuilder.append("\n\n")
 872         aboutVersionStringBuilder.append(blocklistsTextView.text)
 873         aboutVersionStringBuilder.append("\n")
 874         aboutVersionStringBuilder.append(easyListTextView.text)
 875         aboutVersionStringBuilder.append("\n")
 876         aboutVersionStringBuilder.append(easyPrivacyTextView.text)
 877         aboutVersionStringBuilder.append("\n")
 878         aboutVersionStringBuilder.append(fanboyAnnoyanceTextView.text)
 879         aboutVersionStringBuilder.append("\n")
 880         aboutVersionStringBuilder.append(fanboySocialTextView.text)
 881         aboutVersionStringBuilder.append("\n")
 882         aboutVersionStringBuilder.append(ultraListTextView.text)
 883         aboutVersionStringBuilder.append("\n")
 884         aboutVersionStringBuilder.append(ultraPrivacyTextView.text)
 885         aboutVersionStringBuilder.append("\n\n")
 886         aboutVersionStringBuilder.append(packageSignatureTextView.text)
 887         aboutVersionStringBuilder.append("\n")
 888         aboutVersionStringBuilder.append(certificateIssuerDnTextView.text)
 889         aboutVersionStringBuilder.append("\n")
 890         aboutVersionStringBuilder.append(certificateSubjectDnTextView.text)
 891         aboutVersionStringBuilder.append("\n")
 892         aboutVersionStringBuilder.append(certificateStartDateTextView.text)
 893         aboutVersionStringBuilder.append("\n")
 894         aboutVersionStringBuilder.append(certificateEndDateTextView.text)
 895         aboutVersionStringBuilder.append("\n")
 896         aboutVersionStringBuilder.append(certificateVersionTextView.text)
 897         aboutVersionStringBuilder.append("\n")
 898         aboutVersionStringBuilder.append(certificateSerialNumberTextView.text)
 899         aboutVersionStringBuilder.append("\n")
 900         aboutVersionStringBuilder.append(certificateSignatureAlgorithmTextView.text)
 901
 902         // Return the string.
 903         return aboutVersionStringBuilder.toString()
 904     }
 905 }