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

   1 /*
   2  * Copyright © 2016-2022 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.net.Uri
  31 import android.os.Build
  32 import android.os.Bundle
  33 import android.os.Handler
  34 import android.os.Looper
  35 import android.provider.OpenableColumns
  36 import android.text.SpannableStringBuilder
  37 import android.text.Spanned
  38 import android.text.style.ForegroundColorSpan
  39 import android.view.LayoutInflater
  40 import android.view.Menu
  41 import android.view.MenuInflater
  42 import android.view.MenuItem
  43 import android.view.View
  44 import android.view.ViewGroup
  45 import android.webkit.WebView
  46 import android.widget.TextView
  47
  48 import androidx.activity.result.contract.ActivityResultContracts
  49 import androidx.fragment.app.Fragment
  50 import androidx.webkit.WebViewCompat
  51
  52 import com.google.android.material.snackbar.Snackbar
  53
  54 import com.stoutner.privacybrowser.R
  55 import com.stoutner.privacybrowser.BuildConfig
  56 import com.stoutner.privacybrowser.asynctasks.SaveAboutVersionImage
  57
  58 import java.io.ByteArrayInputStream
  59 import java.io.InputStream
  60 import java.lang.Exception
  61 import java.nio.charset.StandardCharsets
  62 import java.security.cert.CertificateException
  63 import java.security.cert.CertificateFactory
  64 import java.security.cert.X509Certificate
  65 import java.text.DateFormat
  66 import java.text.NumberFormat
  67
  68 import kotlin.text.StringBuilder
  69
  70 // Define the class constants.
  71 private const val BLOCKLIST_VERSIONS = "blocklist_versions"
  72 private const val MEBIBYTE = 1048576
  73
  74 class AboutVersionFragment : Fragment() {
  75     // Define the class variables.
  76     private var updateMemoryUsageBoolean = true
  77
  78     // Declare the class variables.
  79     private lateinit var blocklistVersions: Array<String>
  80     private lateinit var aboutVersionLayout: View
  81     private lateinit var appConsumedMemoryLabel: String
  82     private lateinit var appAvailableMemoryLabel: String
  83     private lateinit var appTotalMemoryLabel: String
  84     private lateinit var appMaximumMemoryLabel: String
  85     private lateinit var systemConsumedMemoryLabel: String
  86     private lateinit var systemAvailableMemoryLabel: String
  87     private lateinit var systemTotalMemoryLabel: String
  88     private lateinit var runtime: Runtime
  89     private lateinit var activityManager: ActivityManager
  90     private lateinit var memoryInfo: ActivityManager.MemoryInfo
  91     private lateinit var numberFormat: NumberFormat
  92     private lateinit var blueColorSpan: ForegroundColorSpan
  93
  94     // Declare the class views.
  95     private lateinit var privacyBrowserTextView: TextView
  96     private lateinit var versionTextView: TextView
  97     private lateinit var hardwareTextView: TextView
  98     private lateinit var brandTextView: TextView
  99     private lateinit var manufacturerTextView: TextView
 100     private lateinit var modelTextView: TextView
 101     private lateinit var deviceTextView: TextView
 102     private lateinit var bootloaderTextView: TextView
 103     private lateinit var radioTextView: TextView
 104     private lateinit var softwareTextView: TextView
 105     private lateinit var androidTextView: TextView
 106     private lateinit var securityPatchTextView: TextView
 107     private lateinit var buildTextView: TextView
 108     private lateinit var kernelTextView: TextView
 109     private lateinit var webViewProviderTextView: TextView
 110     private lateinit var webViewVersionTextView: TextView
 111     private lateinit var orbotTextView: TextView
 112     private lateinit var i2pTextView: TextView
 113     private lateinit var openKeychainTextView: TextView
 114     private lateinit var memoryUsageTextView: TextView
 115     private lateinit var appConsumedMemoryTextView: TextView
 116     private lateinit var appAvailableMemoryTextView: TextView
 117     private lateinit var appTotalMemoryTextView: TextView
 118     private lateinit var appMaximumMemoryTextView: TextView
 119     private lateinit var systemConsumedMemoryTextView: TextView
 120     private lateinit var systemAvailableMemoryTextView: TextView
 121     private lateinit var systemTotalMemoryTextView: TextView
 122     private lateinit var blocklistsTextView: TextView
 123     private lateinit var easyListTextView: TextView
 124     private lateinit var easyPrivacyTextView: TextView
 125     private lateinit var fanboyAnnoyanceTextView: TextView
 126     private lateinit var fanboySocialTextView: TextView
 127     private lateinit var ultraListTextView: TextView
 128     private lateinit var ultraPrivacyTextView: TextView
 129     private lateinit var packageSignatureTextView: TextView
 130     private lateinit var certificateIssuerDnTextView: TextView
 131     private lateinit var certificateSubjectDnTextView: TextView
 132     private lateinit var certificateStartDateTextView: TextView
 133     private lateinit var certificateEndDateTextView: TextView
 134     private lateinit var certificateVersionTextView: TextView
 135     private lateinit var certificateSerialNumberTextView: TextView
 136     private lateinit var certificateSignatureAlgorithmTextView: TextView
 137
 138     companion object {
 139         fun createTab(blocklistVersions: Array<String>): AboutVersionFragment {
 140             // Create an arguments bundle.
 141             val argumentsBundle = Bundle()
 142
 143             // Store the arguments in the bundle.
 144             argumentsBundle.putStringArray(BLOCKLIST_VERSIONS, blocklistVersions)
 145
 146             // Create a new instance of the tab fragment.
 147             val aboutVersionFragment = AboutVersionFragment()
 148
 149             // Add the arguments bundle to the fragment.
 150             aboutVersionFragment.arguments = argumentsBundle
 151
 152             // Return the new fragment.
 153             return aboutVersionFragment
 154         }
 155     }
 156
 157     // Define the save about version text activity result launcher.  It must be defined before `onCreate()` is run or the app will crash.
 158     private val saveAboutVersionTextActivityResultLauncher = registerForActivityResult(ActivityResultContracts.CreateDocument("text/plain")) { fileUri: Uri? ->
 159         // Only save the file if the URI is not null, which happens if the user exited the file picker by pressing back.
 160         if (fileUri != null) {
 161             try {
 162                 // Get the about version string.
 163                 val aboutVersionString = getAboutVersionString()
 164
 165                 // Open an output stream.
 166                 val outputStream = requireActivity().contentResolver.openOutputStream(fileUri)!!
 167
 168                 // Write the about version string to the output stream.
 169                 outputStream.write(aboutVersionString.toByteArray(StandardCharsets.UTF_8))
 170
 171                 // Close the output stream.
 172                 outputStream.close()
 173
 174                 // Initialize the file name string from the file URI last path segment.
 175                 var fileNameString = fileUri.lastPathSegment
 176
 177                 // Query the exact file name if the API >= 26.
 178                 if (Build.VERSION.SDK_INT >= 26) {
 179                     // Get a cursor from the content resolver.
 180                     val contentResolverCursor = requireActivity().contentResolver.query(fileUri, null, null, null)!!
 181
 182                     // Move to the first row.
 183                     contentResolverCursor.moveToFirst()
 184
 185                     // Get the file name from the cursor.
 186                     fileNameString = contentResolverCursor.getString(contentResolverCursor.getColumnIndexOrThrow(OpenableColumns.DISPLAY_NAME))
 187
 188                     // Close the cursor.
 189                     contentResolverCursor.close()
 190                 }
 191
 192                 // Display a snackbar with the saved logcat information.
 193                 Snackbar.make(aboutVersionLayout, getString(R.string.saved, fileNameString), Snackbar.LENGTH_SHORT).show()
 194             } catch (exception: Exception) {
 195                 // Display a snackbar with the error message.
 196                 Snackbar.make(aboutVersionLayout, getString(R.string.error_saving_file) + "  " + exception.toString(), Snackbar.LENGTH_INDEFINITE).show()
 197             }
 198         }
 199     }
 200
 201     // Define the save about version image activity result launcher.  It must be defined before `onCreate()` is run or the app will crash.
 202     private val saveAboutVersionImageActivityResultLauncher = registerForActivityResult(ActivityResultContracts.CreateDocument("image/png")) { fileUri: Uri? ->
 203         // Only save the file if the URI is not null, which happens if the user exited the file picker by pressing back.
 204         if (fileUri != null) {
 205             // Save the about version image.
 206             SaveAboutVersionImage(requireActivity(), fileUri, aboutVersionLayout.findViewById(R.id.about_version_linearlayout)).execute()
 207         }
 208     }
 209
 210     override fun onCreate(savedInstanceState: Bundle?) {
 211         // Run the default commands.
 212         super.onCreate(savedInstanceState)
 213
 214         // Store the arguments in class variables.
 215         blocklistVersions = requireArguments().getStringArray(BLOCKLIST_VERSIONS)!!
 216
 217         // Enable the options menu for this fragment.
 218         setHasOptionsMenu(true)
 219     }
 220
 221     override fun onCreateView(layoutInflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
 222         // 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.
 223         aboutVersionLayout = layoutInflater.inflate(R.layout.about_version_scrollview, container, false)
 224
 225         // Get handles for the views.
 226         privacyBrowserTextView = aboutVersionLayout.findViewById(R.id.privacy_browser_textview)
 227         versionTextView = aboutVersionLayout.findViewById(R.id.version)
 228         hardwareTextView = aboutVersionLayout.findViewById(R.id.hardware)
 229         brandTextView = aboutVersionLayout.findViewById(R.id.brand)
 230         manufacturerTextView = aboutVersionLayout.findViewById(R.id.manufacturer)
 231         modelTextView = aboutVersionLayout.findViewById(R.id.model)
 232         deviceTextView = aboutVersionLayout.findViewById(R.id.device)
 233         bootloaderTextView = aboutVersionLayout.findViewById(R.id.bootloader)
 234         radioTextView = aboutVersionLayout.findViewById(R.id.radio)
 235         softwareTextView = aboutVersionLayout.findViewById(R.id.software)
 236         androidTextView = aboutVersionLayout.findViewById(R.id.android)
 237         securityPatchTextView = aboutVersionLayout.findViewById(R.id.security_patch)
 238         buildTextView = aboutVersionLayout.findViewById(R.id.build)
 239         kernelTextView = aboutVersionLayout.findViewById(R.id.kernel)
 240         webViewProviderTextView = aboutVersionLayout.findViewById(R.id.webview_provider)
 241         webViewVersionTextView = aboutVersionLayout.findViewById(R.id.webview_version)
 242         orbotTextView = aboutVersionLayout.findViewById(R.id.orbot)
 243         i2pTextView = aboutVersionLayout.findViewById(R.id.i2p)
 244         openKeychainTextView = aboutVersionLayout.findViewById(R.id.open_keychain)
 245         memoryUsageTextView = aboutVersionLayout.findViewById(R.id.memory_usage)
 246         appConsumedMemoryTextView = aboutVersionLayout.findViewById(R.id.app_consumed_memory)
 247         appAvailableMemoryTextView = aboutVersionLayout.findViewById(R.id.app_available_memory)
 248         appTotalMemoryTextView = aboutVersionLayout.findViewById(R.id.app_total_memory)
 249         appMaximumMemoryTextView = aboutVersionLayout.findViewById(R.id.app_maximum_memory)
 250         systemConsumedMemoryTextView = aboutVersionLayout.findViewById(R.id.system_consumed_memory)
 251         systemAvailableMemoryTextView = aboutVersionLayout.findViewById(R.id.system_available_memory)
 252         systemTotalMemoryTextView = aboutVersionLayout.findViewById(R.id.system_total_memory)
 253         blocklistsTextView = aboutVersionLayout.findViewById(R.id.blocklists)
 254         easyListTextView = aboutVersionLayout.findViewById(R.id.easylist)
 255         easyPrivacyTextView = aboutVersionLayout.findViewById(R.id.easyprivacy)
 256         fanboyAnnoyanceTextView = aboutVersionLayout.findViewById(R.id.fanboy_annoyance)
 257         fanboySocialTextView = aboutVersionLayout.findViewById(R.id.fanboy_social)
 258         ultraListTextView = aboutVersionLayout.findViewById(R.id.ultralist)
 259         ultraPrivacyTextView = aboutVersionLayout.findViewById(R.id.ultraprivacy)
 260         packageSignatureTextView = aboutVersionLayout.findViewById(R.id.package_signature)
 261         certificateIssuerDnTextView = aboutVersionLayout.findViewById(R.id.certificate_issuer_dn)
 262         certificateSubjectDnTextView = aboutVersionLayout.findViewById(R.id.certificate_subject_dn)
 263         certificateStartDateTextView = aboutVersionLayout.findViewById(R.id.certificate_start_date)
 264         certificateEndDateTextView = aboutVersionLayout.findViewById(R.id.certificate_end_date)
 265         certificateVersionTextView = aboutVersionLayout.findViewById(R.id.certificate_version)
 266         certificateSerialNumberTextView = aboutVersionLayout.findViewById(R.id.certificate_serial_number)
 267         certificateSignatureAlgorithmTextView = aboutVersionLayout.findViewById(R.id.certificate_signature_algorithm)
 268
 269         // Setup the labels.
 270         val version = getString(R.string.version) + " " + BuildConfig.VERSION_NAME + " (" + getString(R.string.version_code) + " " + BuildConfig.VERSION_CODE + ")"
 271         val brandLabel = getString(R.string.brand) + "  "
 272         val manufacturerLabel = getString(R.string.manufacturer) + "  "
 273         val modelLabel = getString(R.string.model) + "  "
 274         val deviceLabel = getString(R.string.device) + "  "
 275         val bootloaderLabel = getString(R.string.bootloader) + "  "
 276         val androidLabel = getString(R.string.android) + "  "
 277         val buildLabel = getString(R.string.build) + "  "
 278         val kernelLabel = getString(R.string.kernel) + "  "
 279         val webViewVersionLabel = getString(R.string.webview_version) + "  "
 280         appConsumedMemoryLabel = getString(R.string.app_consumed_memory) + "  "
 281         appAvailableMemoryLabel = getString(R.string.app_available_memory) + "  "
 282         appTotalMemoryLabel = getString(R.string.app_total_memory) + "  "
 283         appMaximumMemoryLabel = getString(R.string.app_maximum_memory) + "  "
 284         systemConsumedMemoryLabel = getString(R.string.system_consumed_memory) + "  "
 285         systemAvailableMemoryLabel = getString(R.string.system_available_memory) + "  "
 286         systemTotalMemoryLabel = getString(R.string.system_total_memory) + "  "
 287         val easyListLabel = getString(R.string.easylist_label) + "  "
 288         val easyPrivacyLabel = getString(R.string.easyprivacy_label) + "  "
 289         val fanboyAnnoyanceLabel = getString(R.string.fanboys_annoyance_label) + "  "
 290         val fanboySocialLabel = getString(R.string.fanboys_social_label) + "  "
 291         val ultraListLabel = getString(R.string.ultralist_label) + "  "
 292         val ultraPrivacyLabel = getString(R.string.ultraprivacy_label) + "  "
 293         val issuerDNLabel = getString(R.string.issuer_dn) + "  "
 294         val subjectDNLabel = getString(R.string.subject_dn) + "  "
 295         val startDateLabel = getString(R.string.start_date) + "  "
 296         val endDateLabel = getString(R.string.end_date) + "  "
 297         val certificateVersionLabel = getString(R.string.certificate_version) + "  "
 298         val serialNumberLabel = getString(R.string.serial_number) + "  "
 299         val signatureAlgorithmLabel = getString(R.string.signature_algorithm) + "  "
 300
 301         // 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.
 302         // Once the minimum API >= 26 this can be accomplished with the WebView package info.
 303         val webViewLayout = layoutInflater.inflate(R.layout.bare_webview, container, false)
 304         val tabLayoutWebView = webViewLayout.findViewById<WebView>(R.id.bare_webview)
 305         val userAgentString = tabLayoutWebView.settings.userAgentString
 306
 307         // Get the device's information and store it in strings.
 308         val brand = Build.BRAND
 309         val manufacturer = Build.MANUFACTURER
 310         val model = Build.MODEL
 311         val device = Build.DEVICE
 312         val bootloader = Build.BOOTLOADER
 313         val radio = Build.getRadioVersion()
 314         val android = Build.VERSION.RELEASE + " (" + getString(R.string.api) + " " + Build.VERSION.SDK_INT + ")"
 315         val build = Build.DISPLAY
 316         val kernel = System.getProperty("os.version")
 317
 318         // Get the WebView version, selecting the substring that begins after `Chrome/` and goes until the next ` `.
 319         val webView = userAgentString.substring(userAgentString.indexOf("Chrome/") + 7, userAgentString.indexOf(" ", userAgentString.indexOf("Chrome/")))
 320
 321         // Get the Orbot version name if Orbot is installed.
 322         val orbot: String = try {
 323             // Store the version name.  The newer `getPackageInfo()` may be used once the minimum API >= 33.
 324             @Suppress("DEPRECATION")
 325             requireContext().packageManager.getPackageInfo("org.torproject.android", 0).versionName
 326         } catch (exception: PackageManager.NameNotFoundException) {  // Orbot is not installed.
 327             // Store an empty string.
 328             ""
 329         }
 330
 331         // Get the I2P version name if I2P is installed.
 332         val i2p: String = try {
 333             // Check to see if the F-Droid flavor is installed.  The newer `getPackageInfo()` may be used once the minimum API >= 33.
 334             @Suppress("DEPRECATION")
 335             requireContext().packageManager.getPackageInfo("net.i2p.android.router", 0).versionName + " " + requireContext().getString(R.string.fdroid_flavor)
 336         } catch (exception: PackageManager.NameNotFoundException) {  // The F-Droid flavor is not installed.
 337             try {
 338                 // Check to see if the F-Droid flavor is installed.  The newer `getPackageInfo()` may be used once the minimum API >= 33.
 339                 @Suppress("DEPRECATION")
 340                 requireContext().packageManager.getPackageInfo("net.i2p.android", 0).versionName + " " + requireContext().getString(R.string.google_play_flavor)
 341             } catch (exception: PackageManager.NameNotFoundException) {  // The Google Play flavor is not installed either.
 342                 // Store an empty string.
 343                 ""
 344             }
 345         }
 346
 347         // Get the OpenKeychain version name if it is installed.
 348         val openKeychain: String = try {
 349             // Store the version name.  The newer `getPackageInfo()` may be used once the minimum API >= 33.
 350             @Suppress("DEPRECATION")
 351             requireContext().packageManager.getPackageInfo("org.sufficientlysecure.keychain", 0).versionName
 352         } catch (exception: PackageManager.NameNotFoundException) {  // OpenKeychain is not installed.
 353             // Store an empty string.
 354             ""
 355         }
 356
 357         // Create a spannable string builder for the hardware and software text views that need multiple colors of text.
 358         val brandStringBuilder = SpannableStringBuilder(brandLabel + brand)
 359         val manufacturerStringBuilder = SpannableStringBuilder(manufacturerLabel + manufacturer)
 360         val modelStringBuilder = SpannableStringBuilder(modelLabel + model)
 361         val deviceStringBuilder = SpannableStringBuilder(deviceLabel + device)
 362         val bootloaderStringBuilder = SpannableStringBuilder(bootloaderLabel + bootloader)
 363         val androidStringBuilder = SpannableStringBuilder(androidLabel + android)
 364         val buildStringBuilder = SpannableStringBuilder(buildLabel + build)
 365         val kernelStringBuilder = SpannableStringBuilder(kernelLabel + kernel)
 366         val webViewVersionStringBuilder = SpannableStringBuilder(webViewVersionLabel + webView)
 367         val easyListStringBuilder = SpannableStringBuilder(easyListLabel + blocklistVersions[0])
 368         val easyPrivacyStringBuilder = SpannableStringBuilder(easyPrivacyLabel + blocklistVersions[1])
 369         val fanboyAnnoyanceStringBuilder = SpannableStringBuilder(fanboyAnnoyanceLabel + blocklistVersions[2])
 370         val fanboySocialStringBuilder = SpannableStringBuilder(fanboySocialLabel + blocklistVersions[3])
 371         val ultraListStringBuilder = SpannableStringBuilder(ultraListLabel + blocklistVersions[4])
 372         val ultraPrivacyStringBuilder = SpannableStringBuilder(ultraPrivacyLabel + blocklistVersions[5])
 373
 374         // Set the blue color span according to the theme.  The deprecated `getColor()` must be used until the minimum API >= 23.
 375         blueColorSpan = ForegroundColorSpan(requireContext().getColor(R.color.alt_blue_text))
 376
 377         // Set the spans to display the device information in blue.  `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
 378         brandStringBuilder.setSpan(blueColorSpan, brandLabel.length, brandStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 379         manufacturerStringBuilder.setSpan(blueColorSpan, manufacturerLabel.length, manufacturerStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 380         modelStringBuilder.setSpan(blueColorSpan, modelLabel.length, modelStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 381         deviceStringBuilder.setSpan(blueColorSpan, deviceLabel.length, deviceStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 382         bootloaderStringBuilder.setSpan(blueColorSpan, bootloaderLabel.length, bootloaderStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 383         androidStringBuilder.setSpan(blueColorSpan, androidLabel.length, androidStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 384         buildStringBuilder.setSpan(blueColorSpan, buildLabel.length, buildStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 385         kernelStringBuilder.setSpan(blueColorSpan, kernelLabel.length, kernelStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 386         webViewVersionStringBuilder.setSpan(blueColorSpan, webViewVersionLabel.length, webViewVersionStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 387         easyListStringBuilder.setSpan(blueColorSpan, easyListLabel.length, easyListStringBuilder.length, Spanned.SPAN_INCLUSIVE_EXCLUSIVE)
 388         easyPrivacyStringBuilder.setSpan(blueColorSpan, easyPrivacyLabel.length, easyPrivacyStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 389         fanboyAnnoyanceStringBuilder.setSpan(blueColorSpan, fanboyAnnoyanceLabel.length, fanboyAnnoyanceStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 390         fanboySocialStringBuilder.setSpan(blueColorSpan, fanboySocialLabel.length, fanboySocialStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 391         ultraListStringBuilder.setSpan(blueColorSpan, ultraListLabel.length, ultraListStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 392         ultraPrivacyStringBuilder.setSpan(blueColorSpan, ultraPrivacyLabel.length, ultraPrivacyStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 393
 394         // Display the strings in the text boxes.
 395         versionTextView.text = version
 396         brandTextView.text = brandStringBuilder
 397         manufacturerTextView.text = manufacturerStringBuilder
 398         modelTextView.text = modelStringBuilder
 399         deviceTextView.text = deviceStringBuilder
 400         bootloaderTextView.text = bootloaderStringBuilder
 401         androidTextView.text = androidStringBuilder
 402         buildTextView.text = buildStringBuilder
 403         kernelTextView.text = kernelStringBuilder
 404         webViewVersionTextView.text = webViewVersionStringBuilder
 405         easyListTextView.text = easyListStringBuilder
 406         easyPrivacyTextView.text = easyPrivacyStringBuilder
 407         fanboyAnnoyanceTextView.text = fanboyAnnoyanceStringBuilder
 408         fanboySocialTextView.text = fanboySocialStringBuilder
 409         ultraListTextView.text = ultraListStringBuilder
 410         ultraPrivacyTextView.text = ultraPrivacyStringBuilder
 411
 412         // Only populate the radio text view if there is a radio in the device.
 413         // 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>
 414         if (radio != null && radio.isNotEmpty()) {
 415             // Setup the label.
 416             val radioLabel = getString(R.string.radio) + "  "
 417
 418             // Create a spannable string builder.
 419             val radioStringBuilder = SpannableStringBuilder(radioLabel + radio)
 420
 421             // Set the span to display the radio in blue.
 422             radioStringBuilder.setSpan(blueColorSpan, radioLabel.length, radioStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 423
 424             // Display the string in the text view.
 425             radioTextView.text = radioStringBuilder
 426         } else {  // This device does not have a radio.
 427             // Hide the radio text view.
 428             radioTextView.visibility = View.GONE
 429         }
 430
 431         // Setup the label.
 432         val securityPatchLabel = getString(R.string.security_patch) + "  "
 433
 434         // Get the security patch version.
 435         val securityPatch = Build.VERSION.SECURITY_PATCH
 436
 437         // Create a spannable string builder.
 438         val securityPatchStringBuilder = SpannableStringBuilder(securityPatchLabel + securityPatch)
 439
 440         // Set the span to display the security patch version in blue.
 441         securityPatchStringBuilder.setSpan(blueColorSpan, securityPatchLabel.length, securityPatchStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 442
 443         // Display the string in the text view.
 444         securityPatchTextView.text = securityPatchStringBuilder
 445
 446         // Create the WebView provider label.
 447         val webViewProviderLabel = getString(R.string.webview_provider) + "  "
 448
 449         // Get the current WebView package info.
 450         val webViewPackageInfo = WebViewCompat.getCurrentWebViewPackage(requireContext())!!
 451
 452         // Get the WebView provider name.
 453         val webViewPackageName = webViewPackageInfo.packageName
 454
 455         // Create the spannable string builder.
 456         val webViewProviderStringBuilder = SpannableStringBuilder(webViewProviderLabel + webViewPackageName)
 457
 458         // Apply the coloration.
 459         webViewProviderStringBuilder.setSpan(blueColorSpan, webViewProviderLabel.length, webViewProviderStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 460
 461         // Display the WebView provider.
 462         webViewProviderTextView.text = webViewProviderStringBuilder
 463
 464         // Only populate the Orbot text view if it is installed.
 465         if (orbot.isNotEmpty()) {
 466             // Setup the label.
 467             val orbotLabel = getString(R.string.orbot) + "  "
 468
 469             // Create a spannable string builder.
 470             val orbotStringBuilder = SpannableStringBuilder(orbotLabel + orbot)
 471
 472             // Set the span to display the Orbot version.
 473             orbotStringBuilder.setSpan(blueColorSpan, orbotLabel.length, orbotStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 474
 475             // Display the string in the text view.
 476             orbotTextView.text = orbotStringBuilder
 477         } else {  // Orbot is not installed.
 478             // Hide the Orbot text view.
 479             orbotTextView.visibility = View.GONE
 480         }
 481
 482         // Only populate the I2P text view if it is installed.
 483         if (i2p.isNotEmpty()) {
 484             // Setup the label.
 485             val i2pLabel = getString(R.string.i2p) + "  "
 486
 487             // Create a spannable string builder.
 488             val i2pStringBuilder = SpannableStringBuilder(i2pLabel + i2p)
 489
 490             // Set the span to display the I2P version.
 491             i2pStringBuilder.setSpan(blueColorSpan, i2pLabel.length, i2pStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 492
 493             // Display the string in the text view.
 494             i2pTextView.text = i2pStringBuilder
 495         } else {  // I2P is not installed.
 496             // Hide the I2P text view.
 497             i2pTextView.visibility = View.GONE
 498         }
 499
 500         // Only populate the OpenKeychain text view if it is installed.
 501         if (openKeychain.isNotEmpty()) {
 502             // Setup the label.
 503             val openKeychainLabel = getString(R.string.openkeychain) + "  "
 504
 505             // Create a spannable string builder.
 506             val openKeychainStringBuilder = SpannableStringBuilder(openKeychainLabel + openKeychain)
 507
 508             // Set the span to display the OpenKeychain version.
 509             openKeychainStringBuilder.setSpan(blueColorSpan, openKeychainLabel.length, openKeychainStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 510
 511             // Display the string in the text view.
 512             openKeychainTextView.text = openKeychainStringBuilder
 513         } else {  //OpenKeychain is not installed.
 514             // Hide the OpenKeychain text view.
 515             openKeychainTextView.visibility = View.GONE
 516         }
 517
 518         // Display the package signature.
 519         try {
 520             // Get the first package signature.  Suppress the lint warning about the need to be careful in implementing comparison of certificates for security purposes.
 521             // Once the minimum API >= 28, `GET_SIGNING_CERTIFICATES` can be used instead.  Once the minimum API >= 33, the newer `getPackageInfo()` may be used.
 522             @Suppress("DEPRECATION")
 523             @SuppressLint("PackageManagerGetSignatures") val packageSignature = requireContext().packageManager.getPackageInfo(requireContext().packageName,PackageManager.GET_SIGNATURES)
 524                 .signatures[0]
 525
 526             // Convert the signature to a byte array input stream.
 527             val certificateByteArrayInputStream: InputStream = ByteArrayInputStream(packageSignature.toByteArray())
 528
 529             // Display the certificate information on the screen.
 530             try {
 531                 // Instantiate a certificate factory.
 532                 val certificateFactory = CertificateFactory.getInstance("X509")
 533
 534                 // Generate an X509 certificate.
 535                 val x509Certificate = certificateFactory.generateCertificate(certificateByteArrayInputStream) as X509Certificate
 536
 537                 // Store the individual sections of the certificate.
 538                 val issuerDNPrincipal = x509Certificate.issuerDN
 539                 val subjectDNPrincipal = x509Certificate.subjectDN
 540                 val startDate = x509Certificate.notBefore
 541                 val endDate = x509Certificate.notAfter
 542                 val certificateVersion = x509Certificate.version
 543                 val serialNumberBigInteger = x509Certificate.serialNumber
 544                 val signatureAlgorithmNameString = x509Certificate.sigAlgName
 545
 546                 // Create a spannable string builder for each text view that needs multiple colors of text.
 547                 val issuerDNStringBuilder = SpannableStringBuilder(issuerDNLabel + issuerDNPrincipal.toString())
 548                 val subjectDNStringBuilder = SpannableStringBuilder(subjectDNLabel + subjectDNPrincipal.toString())
 549                 val startDateStringBuilder = SpannableStringBuilder(startDateLabel + DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.LONG).format(startDate))
 550                 val endDataStringBuilder = SpannableStringBuilder(endDateLabel + DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.LONG).format(endDate))
 551                 val certificateVersionStringBuilder = SpannableStringBuilder(certificateVersionLabel + certificateVersion)
 552                 val serialNumberStringBuilder = SpannableStringBuilder(serialNumberLabel + serialNumberBigInteger)
 553                 val signatureAlgorithmStringBuilder = SpannableStringBuilder(signatureAlgorithmLabel + signatureAlgorithmNameString)
 554
 555                 // Setup the spans to display the device information in blue.  `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
 556                 issuerDNStringBuilder.setSpan(blueColorSpan, issuerDNLabel.length, issuerDNStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 557                 subjectDNStringBuilder.setSpan(blueColorSpan, subjectDNLabel.length, subjectDNStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 558                 startDateStringBuilder.setSpan(blueColorSpan, startDateLabel.length, startDateStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 559                 endDataStringBuilder.setSpan(blueColorSpan, endDateLabel.length, endDataStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 560                 certificateVersionStringBuilder.setSpan(blueColorSpan, certificateVersionLabel.length, certificateVersionStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 561                 serialNumberStringBuilder.setSpan(blueColorSpan, serialNumberLabel.length, serialNumberStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 562                 signatureAlgorithmStringBuilder.setSpan(blueColorSpan, signatureAlgorithmLabel.length, signatureAlgorithmStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 563
 564                 // Display the strings in the text boxes.
 565                 certificateIssuerDnTextView.text = issuerDNStringBuilder
 566                 certificateSubjectDnTextView.text = subjectDNStringBuilder
 567                 certificateStartDateTextView.text = startDateStringBuilder
 568                 certificateEndDateTextView.text = endDataStringBuilder
 569                 certificateVersionTextView.text = certificateVersionStringBuilder
 570                 certificateSerialNumberTextView.text = serialNumberStringBuilder
 571                 certificateSignatureAlgorithmTextView.text = signatureAlgorithmStringBuilder
 572             } catch (certificateException: CertificateException) {
 573                 // Do nothing if there is a certificate error.
 574             }
 575
 576             // Get a handle for the runtime.
 577             runtime = Runtime.getRuntime()
 578
 579             // Get a handle for the activity manager.
 580             activityManager = requireActivity().getSystemService(Context.ACTIVITY_SERVICE) as ActivityManager
 581
 582             // Instantiate a memory info variable.
 583             memoryInfo = ActivityManager.MemoryInfo()
 584
 585             // Define a number format.
 586             numberFormat = NumberFormat.getInstance()
 587
 588             // Set the minimum and maximum number of fraction digits.
 589             numberFormat.minimumFractionDigits = 2
 590             numberFormat.maximumFractionDigits = 2
 591
 592             // Update the memory usage.
 593             updateMemoryUsage(requireActivity())
 594         } catch (e: PackageManager.NameNotFoundException) {
 595             // Do nothing if the package manager says Privacy Browser isn't installed.
 596         }
 597
 598         // Scroll the tab if the saved instance state is not null.
 599         if (savedInstanceState != null) {
 600             aboutVersionLayout.post {
 601                 aboutVersionLayout.scrollX = savedInstanceState.getInt("scroll_x")
 602                 aboutVersionLayout.scrollY = savedInstanceState.getInt("scroll_y")
 603             }
 604         }
 605
 606         // Return the tab layout.
 607         return aboutVersionLayout
 608     }
 609
 610     override fun onCreateOptionsMenu(menu: Menu, menuInflater: MenuInflater) {
 611         // Inflate the about version menu.
 612         menuInflater.inflate(R.menu.about_version_options_menu, menu)
 613
 614         // Run the default commands.
 615         super.onCreateOptionsMenu(menu, menuInflater)
 616     }
 617
 618     override fun onOptionsItemSelected(menuItem: MenuItem): Boolean {
 619         // Run the appropriate commands.
 620         when (menuItem.itemId) {
 621             R.id.copy -> {  // Copy.
 622                 // Get the about version string.
 623                 val aboutVersionString = getAboutVersionString()
 624
 625                 // Get a handle for the clipboard manager.
 626                 val clipboardManager = (requireActivity().getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager)
 627
 628                 // Save the about version string in a clip data.
 629                 val aboutVersionClipData = ClipData.newPlainText(getString(R.string.about), aboutVersionString)
 630
 631                 // Place the clip data on the clipboard.
 632                 clipboardManager.setPrimaryClip(aboutVersionClipData)
 633
 634                 // Display a snackbar.
 635                 Snackbar.make(aboutVersionLayout, R.string.version_info_copied, Snackbar.LENGTH_SHORT).show()
 636
 637                 // Consume the event.
 638                 return true
 639             }
 640
 641             R.id.share -> {  // Share.
 642                 // Get the about version string.
 643                 val aboutString = getAboutVersionString()
 644
 645                 // Create an email intent.
 646                 val emailIntent = Intent(Intent.ACTION_SEND)
 647
 648                 // Add the about version string to the intent.
 649                 emailIntent.putExtra(Intent.EXTRA_TEXT, aboutString)
 650
 651                 // Set the MIME type.
 652                 emailIntent.type = "text/plain"
 653
 654                 // Set the intent to open in a new task.
 655                 emailIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
 656
 657                 // Make it so.
 658                 startActivity(Intent.createChooser(emailIntent, getString(R.string.share)))
 659
 660                 // Consume the event.
 661                 return true
 662             }
 663
 664             R.id.save_text -> {  // Save text.
 665                 // Open the file picker.
 666                 saveAboutVersionTextActivityResultLauncher.launch(getString(R.string.privacy_browser_version_txt, BuildConfig.VERSION_NAME))
 667
 668                 // Consume the event.
 669                 return true
 670             }
 671
 672             R.id.save_image -> {  // Save image.
 673                 // Open the file picker.
 674                 saveAboutVersionImageActivityResultLauncher.launch(getString(R.string.privacy_browser_version_png, BuildConfig.VERSION_NAME))
 675
 676                 // Consume the event.
 677                 return true
 678             }
 679             else -> {  // The home button was selected.
 680                 // Run the parents class on return.
 681                 return super.onOptionsItemSelected(menuItem)
 682             }
 683         }
 684     }
 685
 686     override fun onSaveInstanceState(savedInstanceState: Bundle) {
 687         // Run the default commands.
 688         super.onSaveInstanceState(savedInstanceState)
 689
 690         // Save the scroll positions.
 691         savedInstanceState.putInt("scroll_x", aboutVersionLayout.scrollX)
 692         savedInstanceState.putInt("scroll_y", aboutVersionLayout.scrollY)
 693     }
 694
 695     override fun onPause() {
 696         // Run the default commands.
 697         super.onPause()
 698
 699         // Pause the updating of the memory usage.
 700         updateMemoryUsageBoolean = false
 701     }
 702
 703     override fun onResume() {
 704         // Run the default commands.
 705         super.onResume()
 706
 707         // Resume the updating of the memory usage.
 708         updateMemoryUsageBoolean = true
 709     }
 710
 711     fun updateMemoryUsage(activity: Activity) {
 712         try {
 713             // Update the memory usage if enabled.
 714             if (updateMemoryUsageBoolean) {
 715                 // Populate the memory info variable.
 716                 activityManager.getMemoryInfo(memoryInfo)
 717
 718                 // Get the app memory information.
 719                 val appAvailableMemoryLong = runtime.freeMemory()
 720                 val appTotalMemoryLong = runtime.totalMemory()
 721                 val appMaximumMemoryLong = runtime.maxMemory()
 722
 723                 // Calculate the app consumed memory.
 724                 val appConsumedMemoryLong = appTotalMemoryLong - appAvailableMemoryLong
 725
 726                 // Get the system memory information.
 727                 val systemTotalMemoryLong = memoryInfo.totalMem
 728                 val systemAvailableMemoryLong = memoryInfo.availMem
 729
 730                 // Calculate the system consumed memory.
 731                 val systemConsumedMemoryLong = systemTotalMemoryLong - systemAvailableMemoryLong
 732
 733                 // Convert the memory information into mebibytes.
 734                 val appConsumedMemoryFloat = appConsumedMemoryLong.toFloat() / MEBIBYTE
 735                 val appAvailableMemoryFloat = appAvailableMemoryLong.toFloat() / MEBIBYTE
 736                 val appTotalMemoryFloat = appTotalMemoryLong.toFloat() / MEBIBYTE
 737                 val appMaximumMemoryFloat = appMaximumMemoryLong.toFloat() / MEBIBYTE
 738                 val systemConsumedMemoryFloat = systemConsumedMemoryLong.toFloat() / MEBIBYTE
 739                 val systemAvailableMemoryFloat = systemAvailableMemoryLong.toFloat() / MEBIBYTE
 740                 val systemTotalMemoryFloat = systemTotalMemoryLong.toFloat() / MEBIBYTE
 741
 742                 // Get the mebibyte string.
 743                 val mebibyte = getString(R.string.mebibyte)
 744
 745                 // Calculate the mebibyte length.
 746                 val mebibyteLength = mebibyte.length
 747
 748                 // Create spannable string builders.
 749                 val appConsumedMemoryStringBuilder = SpannableStringBuilder(appConsumedMemoryLabel + numberFormat.format(appConsumedMemoryFloat.toDouble()) + " " + mebibyte)
 750                 val appAvailableMemoryStringBuilder = SpannableStringBuilder(appAvailableMemoryLabel + numberFormat.format(appAvailableMemoryFloat.toDouble()) + " " + mebibyte)
 751                 val appTotalMemoryStringBuilder = SpannableStringBuilder(appTotalMemoryLabel + numberFormat.format(appTotalMemoryFloat.toDouble()) + " " + mebibyte)
 752                 val appMaximumMemoryStringBuilder = SpannableStringBuilder(appMaximumMemoryLabel + numberFormat.format(appMaximumMemoryFloat.toDouble()) + " " + mebibyte)
 753                 val systemConsumedMemoryStringBuilder = SpannableStringBuilder(systemConsumedMemoryLabel + numberFormat.format(systemConsumedMemoryFloat.toDouble()) + " " + mebibyte)
 754                 val systemAvailableMemoryStringBuilder = SpannableStringBuilder(systemAvailableMemoryLabel + numberFormat.format(systemAvailableMemoryFloat.toDouble()) + " " + mebibyte)
 755                 val systemTotalMemoryStringBuilder = SpannableStringBuilder(systemTotalMemoryLabel + numberFormat.format(systemTotalMemoryFloat.toDouble()) + " " + mebibyte)
 756
 757                 // Setup the spans to display the memory information in blue.  `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
 758                 appConsumedMemoryStringBuilder.setSpan(blueColorSpan, appConsumedMemoryLabel.length, appConsumedMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 759                 appAvailableMemoryStringBuilder.setSpan(blueColorSpan, appAvailableMemoryLabel.length, appAvailableMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 760                 appTotalMemoryStringBuilder.setSpan(blueColorSpan, appTotalMemoryLabel.length, appTotalMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 761                 appMaximumMemoryStringBuilder.setSpan(blueColorSpan, appMaximumMemoryLabel.length, appMaximumMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 762                 systemConsumedMemoryStringBuilder.setSpan(blueColorSpan, systemConsumedMemoryLabel.length, systemConsumedMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 763                 systemAvailableMemoryStringBuilder.setSpan(blueColorSpan, systemAvailableMemoryLabel.length, systemAvailableMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 764                 systemTotalMemoryStringBuilder.setSpan(blueColorSpan, systemTotalMemoryLabel.length, systemTotalMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 765
 766                 // Display the string in the text boxes.
 767                 appConsumedMemoryTextView.text = appConsumedMemoryStringBuilder
 768                 appAvailableMemoryTextView.text = appAvailableMemoryStringBuilder
 769                 appTotalMemoryTextView.text = appTotalMemoryStringBuilder
 770                 appMaximumMemoryTextView.text = appMaximumMemoryStringBuilder
 771                 systemConsumedMemoryTextView.text = systemConsumedMemoryStringBuilder
 772                 systemAvailableMemoryTextView.text = systemAvailableMemoryStringBuilder
 773                 systemTotalMemoryTextView.text = systemTotalMemoryStringBuilder
 774             }
 775
 776             // Schedule another memory update if the activity has not been destroyed.
 777             if (!activity.isDestroyed) {
 778                 // Create a handler to update the memory usage.
 779                 val updateMemoryUsageHandler = Handler(Looper.getMainLooper())
 780
 781                 // Create a runnable to update the memory usage.
 782                 val updateMemoryUsageRunnable = Runnable { updateMemoryUsage(activity) }
 783
 784                 // Update the memory usage after 1000 milliseconds
 785                 updateMemoryUsageHandler.postDelayed(updateMemoryUsageRunnable, 1000)
 786             }
 787         } catch (exception: Exception) {
 788             // Do nothing.
 789         }
 790     }
 791
 792     fun getAboutVersionString(): String {
 793         // Initialize an about version string builder.
 794         val aboutVersionStringBuilder = StringBuilder()
 795
 796         // Populate the about version string builder.
 797         aboutVersionStringBuilder.append(privacyBrowserTextView.text)
 798         aboutVersionStringBuilder.append("\n")
 799         aboutVersionStringBuilder.append(versionTextView.text)
 800         aboutVersionStringBuilder.append("\n\n")
 801         aboutVersionStringBuilder.append(hardwareTextView.text)
 802         aboutVersionStringBuilder.append("\n")
 803         aboutVersionStringBuilder.append(brandTextView.text)
 804         aboutVersionStringBuilder.append("\n")
 805         aboutVersionStringBuilder.append(manufacturerTextView.text)
 806         aboutVersionStringBuilder.append("\n")
 807         aboutVersionStringBuilder.append(modelTextView.text)
 808         aboutVersionStringBuilder.append("\n")
 809         aboutVersionStringBuilder.append(deviceTextView.text)
 810         aboutVersionStringBuilder.append("\n")
 811         aboutVersionStringBuilder.append(bootloaderTextView.text)
 812         aboutVersionStringBuilder.append("\n")
 813         if (radioTextView.visibility == View.VISIBLE) {
 814             aboutVersionStringBuilder.append(radioTextView.text)
 815             aboutVersionStringBuilder.append("\n")
 816         }
 817         aboutVersionStringBuilder.append("\n")
 818         aboutVersionStringBuilder.append(softwareTextView.text)
 819         aboutVersionStringBuilder.append("\n")
 820         aboutVersionStringBuilder.append(androidTextView.text)
 821         aboutVersionStringBuilder.append("\n")
 822         if (securityPatchTextView.visibility == View.VISIBLE) {
 823             aboutVersionStringBuilder.append(securityPatchTextView.text)
 824             aboutVersionStringBuilder.append("\n")
 825         }
 826         aboutVersionStringBuilder.append(buildTextView.text)
 827         aboutVersionStringBuilder.append("\n")
 828         aboutVersionStringBuilder.append(kernelTextView.text)
 829         aboutVersionStringBuilder.append("\n")
 830         if (webViewProviderTextView.visibility == View.VISIBLE) {
 831             aboutVersionStringBuilder.append(webViewProviderTextView.text)
 832             aboutVersionStringBuilder.append("\n")
 833         }
 834         aboutVersionStringBuilder.append(webViewVersionTextView.text)
 835         aboutVersionStringBuilder.append("\n")
 836         if (orbotTextView.visibility == View.VISIBLE) {
 837             aboutVersionStringBuilder.append(orbotTextView.text)
 838             aboutVersionStringBuilder.append("\n")
 839         }
 840         if (i2pTextView.visibility == View.VISIBLE) {
 841             aboutVersionStringBuilder.append(i2pTextView.text)
 842             aboutVersionStringBuilder.append("\n")
 843         }
 844         if (openKeychainTextView.visibility == View.VISIBLE) {
 845             aboutVersionStringBuilder.append(openKeychainTextView.text)
 846             aboutVersionStringBuilder.append("\n")
 847         }
 848         aboutVersionStringBuilder.append("\n")
 849         aboutVersionStringBuilder.append(memoryUsageTextView.text)
 850         aboutVersionStringBuilder.append("\n")
 851         aboutVersionStringBuilder.append(appConsumedMemoryTextView.text)
 852         aboutVersionStringBuilder.append("\n")
 853         aboutVersionStringBuilder.append(appAvailableMemoryTextView.text)
 854         aboutVersionStringBuilder.append("\n")
 855         aboutVersionStringBuilder.append(appTotalMemoryTextView.text)
 856         aboutVersionStringBuilder.append("\n")
 857         aboutVersionStringBuilder.append(appMaximumMemoryTextView.text)
 858         aboutVersionStringBuilder.append("\n")
 859         aboutVersionStringBuilder.append(systemConsumedMemoryTextView.text)
 860         aboutVersionStringBuilder.append("\n")
 861         aboutVersionStringBuilder.append(systemAvailableMemoryTextView.text)
 862         aboutVersionStringBuilder.append("\n")
 863         aboutVersionStringBuilder.append(systemTotalMemoryTextView.text)
 864         aboutVersionStringBuilder.append("\n\n")
 865         aboutVersionStringBuilder.append(blocklistsTextView.text)
 866         aboutVersionStringBuilder.append("\n")
 867         aboutVersionStringBuilder.append(easyListTextView.text)
 868         aboutVersionStringBuilder.append("\n")
 869         aboutVersionStringBuilder.append(easyPrivacyTextView.text)
 870         aboutVersionStringBuilder.append("\n")
 871         aboutVersionStringBuilder.append(fanboyAnnoyanceTextView.text)
 872         aboutVersionStringBuilder.append("\n")
 873         aboutVersionStringBuilder.append(fanboySocialTextView.text)
 874         aboutVersionStringBuilder.append("\n")
 875         aboutVersionStringBuilder.append(ultraListTextView.text)
 876         aboutVersionStringBuilder.append("\n")
 877         aboutVersionStringBuilder.append(ultraPrivacyTextView.text)
 878         aboutVersionStringBuilder.append("\n\n")
 879         aboutVersionStringBuilder.append(packageSignatureTextView.text)
 880         aboutVersionStringBuilder.append("\n")
 881         aboutVersionStringBuilder.append(certificateIssuerDnTextView.text)
 882         aboutVersionStringBuilder.append("\n")
 883         aboutVersionStringBuilder.append(certificateSubjectDnTextView.text)
 884         aboutVersionStringBuilder.append("\n")
 885         aboutVersionStringBuilder.append(certificateStartDateTextView.text)
 886         aboutVersionStringBuilder.append("\n")
 887         aboutVersionStringBuilder.append(certificateEndDateTextView.text)
 888         aboutVersionStringBuilder.append("\n")
 889         aboutVersionStringBuilder.append(certificateVersionTextView.text)
 890         aboutVersionStringBuilder.append("\n")
 891         aboutVersionStringBuilder.append(certificateSerialNumberTextView.text)
 892         aboutVersionStringBuilder.append("\n")
 893         aboutVersionStringBuilder.append(certificateSignatureAlgorithmTextView.text)
 894
 895         // Return the string.
 896         return aboutVersionStringBuilder.toString()
 897     }
 898 }