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 FILTERLISTS_VERSIONS = "filterlists_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 aboutVersionLayout: View
  84     private lateinit var activityManager: ActivityManager
  85     private lateinit var appAvailableMemoryLabel: String
  86     private lateinit var appConsumedMemoryLabel: String
  87     private lateinit var appMaximumMemoryLabel: String
  88     private lateinit var appTotalMemoryLabel: String
  89     private lateinit var blueColorSpan: ForegroundColorSpan
  90     private lateinit var filterListsVersions: Array<String>
  91     private lateinit var memoryInfo: ActivityManager.MemoryInfo
  92     private lateinit var numberFormat: NumberFormat
  93     private lateinit var runtime: Runtime
  94     private lateinit var systemAvailableMemoryLabel: String
  95     private lateinit var systemConsumedMemoryLabel: String
  96     private lateinit var systemTotalMemoryLabel: String
  97
  98     // Declare the class views.
  99     private lateinit var androidTextView: TextView
 100     private lateinit var appAvailableMemoryTextView: TextView
 101     private lateinit var appConsumedMemoryTextView: TextView
 102     private lateinit var appMaximumMemoryTextView: TextView
 103     private lateinit var appTotalMemoryTextView: TextView
 104     private lateinit var brandTextView: TextView
 105     private lateinit var bootloaderTextView: TextView
 106     private lateinit var certificateEndDateTextView: TextView
 107     private lateinit var certificateIssuerDnTextView: TextView
 108     private lateinit var certificateSerialNumberTextView: TextView
 109     private lateinit var certificateSignatureAlgorithmTextView: TextView
 110     private lateinit var certificateStartDateTextView: TextView
 111     private lateinit var certificateSubjectDnTextView: TextView
 112     private lateinit var certificateVersionTextView: TextView
 113     private lateinit var buildTextView: TextView
 114     private lateinit var deviceTextView: TextView
 115     private lateinit var easyListTextView: TextView
 116     private lateinit var easyPrivacyTextView: TextView
 117     private lateinit var fanboyAnnoyanceTextView: TextView
 118     private lateinit var fanboySocialTextView: TextView
 119     private lateinit var filterListsTextView: TextView
 120     private lateinit var hardwareTextView: TextView
 121     private lateinit var i2pTextView: TextView
 122     private lateinit var kernelTextView: TextView
 123     private lateinit var manufacturerTextView: TextView
 124     private lateinit var memoryUsageTextView: TextView
 125     private lateinit var modelTextView: TextView
 126     private lateinit var openKeychainTextView: TextView
 127     private lateinit var orbotTextView: TextView
 128     private lateinit var packageSignatureTextView: TextView
 129     private lateinit var privacyBrowserTextView: TextView
 130     private lateinit var radioTextView: TextView
 131     private lateinit var securityPatchTextView: TextView
 132     private lateinit var softwareTextView: TextView
 133     private lateinit var systemAvailableMemoryTextView: TextView
 134     private lateinit var systemConsumedMemoryTextView: TextView
 135     private lateinit var systemTotalMemoryTextView: TextView
 136     private lateinit var versionTextView: TextView
 137     private lateinit var ultraListTextView: TextView
 138     private lateinit var ultraPrivacyTextView: TextView
 139     private lateinit var webViewProviderTextView: TextView
 140     private lateinit var webViewVersionTextView: TextView
 141
 142     companion object {
 143         fun createTab(filterListsVersions: Array<String>): AboutVersionFragment {
 144             // Create an arguments bundle.
 145             val argumentsBundle = Bundle()
 146
 147             // Store the arguments in the bundle.
 148             argumentsBundle.putStringArray(FILTERLISTS_VERSIONS, filterListsVersions)
 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         filterListsVersions = requireArguments().getStringArray(FILTERLISTS_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         filterListsTextView = aboutVersionLayout.findViewById(R.id.filterlists)
 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.
 331             requireContext().packageManager.getPackageInfo("org.torproject.android", 0).versionName
 332         } catch (exception: PackageManager.NameNotFoundException) {  // Orbot is not installed.
 333             // Store an empty string.
 334             ""
 335         }
 336
 337         // Get the I2P version name if I2P is installed.
 338         val i2p: String = try {
 339             // Check to see if the F-Droid flavor is installed.
 340             requireContext().getString(R.string.fdroid_flavor, requireContext().packageManager.getPackageInfo("net.i2p.android.router", 0).versionName)
 341         } catch (exception: PackageManager.NameNotFoundException) {  // The F-Droid flavor is not installed.
 342             try {
 343                 // Check to see if the F-Droid flavor is installed.
 344                 requireContext().getString(R.string.google_play_flavor, requireContext().packageManager.getPackageInfo("net.i2p.android", 0).versionName)
 345             } catch (exception: PackageManager.NameNotFoundException) {  // The Google Play flavor is not installed either.
 346                 // Store an empty string.
 347                 ""
 348             }
 349         }
 350
 351         // Get the OpenKeychain version name if it is installed.
 352         val openKeychain: String = try {
 353             // Store the version name.
 354             requireContext().packageManager.getPackageInfo("org.sufficientlysecure.keychain", 0).versionName
 355         } catch (exception: PackageManager.NameNotFoundException) {  // OpenKeychain is not installed.
 356             // Store an empty string.
 357             ""
 358         }
 359
 360         // Create a spannable string builder for the hardware and software text views that need multiple colors of text.
 361         val brandStringBuilder = SpannableStringBuilder(brandLabel + brand)
 362         val manufacturerStringBuilder = SpannableStringBuilder(manufacturerLabel + manufacturer)
 363         val modelStringBuilder = SpannableStringBuilder(modelLabel + model)
 364         val deviceStringBuilder = SpannableStringBuilder(deviceLabel + device)
 365         val bootloaderStringBuilder = SpannableStringBuilder(bootloaderLabel + bootloader)
 366         val androidStringBuilder = SpannableStringBuilder(androidLabel + android)
 367         val buildStringBuilder = SpannableStringBuilder(buildLabel + build)
 368         val kernelStringBuilder = SpannableStringBuilder(kernelLabel + kernel)
 369         val webViewVersionStringBuilder = SpannableStringBuilder(webViewVersionLabel + webView)
 370         val easyListStringBuilder = SpannableStringBuilder(easyListLabel + filterListsVersions[0])
 371         val easyPrivacyStringBuilder = SpannableStringBuilder(easyPrivacyLabel + filterListsVersions[1])
 372         val fanboyAnnoyanceStringBuilder = SpannableStringBuilder(fanboyAnnoyanceLabel + filterListsVersions[2])
 373         val fanboySocialStringBuilder = SpannableStringBuilder(fanboySocialLabel + filterListsVersions[3])
 374         val ultraListStringBuilder = SpannableStringBuilder(ultraListLabel + filterListsVersions[4])
 375         val ultraPrivacyStringBuilder = SpannableStringBuilder(ultraPrivacyLabel + filterListsVersions[5])
 376
 377         // Set the blue color span according to the theme.  The deprecated `getColor()` must be used until the minimum API >= 23.
 378         blueColorSpan = ForegroundColorSpan(requireContext().getColor(R.color.alt_blue_text))
 379
 380         // Set the spans to display the device information in blue.  `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
 381         brandStringBuilder.setSpan(blueColorSpan, brandLabel.length, brandStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 382         manufacturerStringBuilder.setSpan(blueColorSpan, manufacturerLabel.length, manufacturerStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 383         modelStringBuilder.setSpan(blueColorSpan, modelLabel.length, modelStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 384         deviceStringBuilder.setSpan(blueColorSpan, deviceLabel.length, deviceStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 385         bootloaderStringBuilder.setSpan(blueColorSpan, bootloaderLabel.length, bootloaderStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 386         androidStringBuilder.setSpan(blueColorSpan, androidLabel.length, androidStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 387         buildStringBuilder.setSpan(blueColorSpan, buildLabel.length, buildStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 388         kernelStringBuilder.setSpan(blueColorSpan, kernelLabel.length, kernelStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 389         webViewVersionStringBuilder.setSpan(blueColorSpan, webViewVersionLabel.length, webViewVersionStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 390         easyListStringBuilder.setSpan(blueColorSpan, easyListLabel.length, easyListStringBuilder.length, Spanned.SPAN_INCLUSIVE_EXCLUSIVE)
 391         easyPrivacyStringBuilder.setSpan(blueColorSpan, easyPrivacyLabel.length, easyPrivacyStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 392         fanboyAnnoyanceStringBuilder.setSpan(blueColorSpan, fanboyAnnoyanceLabel.length, fanboyAnnoyanceStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 393         fanboySocialStringBuilder.setSpan(blueColorSpan, fanboySocialLabel.length, fanboySocialStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 394         ultraListStringBuilder.setSpan(blueColorSpan, ultraListLabel.length, ultraListStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 395         ultraPrivacyStringBuilder.setSpan(blueColorSpan, ultraPrivacyLabel.length, ultraPrivacyStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 396
 397         // Display the strings in the text boxes.
 398         versionTextView.text = version
 399         brandTextView.text = brandStringBuilder
 400         manufacturerTextView.text = manufacturerStringBuilder
 401         modelTextView.text = modelStringBuilder
 402         deviceTextView.text = deviceStringBuilder
 403         bootloaderTextView.text = bootloaderStringBuilder
 404         androidTextView.text = androidStringBuilder
 405         buildTextView.text = buildStringBuilder
 406         kernelTextView.text = kernelStringBuilder
 407         webViewVersionTextView.text = webViewVersionStringBuilder
 408         easyListTextView.text = easyListStringBuilder
 409         easyPrivacyTextView.text = easyPrivacyStringBuilder
 410         fanboyAnnoyanceTextView.text = fanboyAnnoyanceStringBuilder
 411         fanboySocialTextView.text = fanboySocialStringBuilder
 412         ultraListTextView.text = ultraListStringBuilder
 413         ultraPrivacyTextView.text = ultraPrivacyStringBuilder
 414
 415         // Only populate the radio text view if there is a radio in the device.
 416         // 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>
 417         if (radio != null && radio.isNotEmpty()) {
 418             // Setup the label.
 419             val radioLabel = getString(R.string.radio)
 420
 421             // Create a spannable string builder.
 422             val radioStringBuilder = SpannableStringBuilder(radioLabel + radio)
 423
 424             // Set the span to display the radio in blue.
 425             radioStringBuilder.setSpan(blueColorSpan, radioLabel.length, radioStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 426
 427             // Display the string in the text view.
 428             radioTextView.text = radioStringBuilder
 429         } else {  // This device does not have a radio.
 430             // Hide the radio text view.
 431             radioTextView.visibility = View.GONE
 432         }
 433
 434         // Setup the label.
 435         val securityPatchLabel = getString(R.string.security_patch)
 436
 437         // Get the security patch version.
 438         val securityPatch = Build.VERSION.SECURITY_PATCH
 439
 440         // Create a spannable string builder.
 441         val securityPatchStringBuilder = SpannableStringBuilder(securityPatchLabel + securityPatch)
 442
 443         // Set the span to display the security patch version in blue.
 444         securityPatchStringBuilder.setSpan(blueColorSpan, securityPatchLabel.length, securityPatchStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 445
 446         // Display the string in the text view.
 447         securityPatchTextView.text = securityPatchStringBuilder
 448
 449         // Create the WebView provider label.
 450         val webViewProviderLabel = getString(R.string.webview_provider)
 451
 452         // Get the current WebView package info.
 453         val webViewPackageInfo = WebViewCompat.getCurrentWebViewPackage(requireContext())!!
 454
 455         // Get the WebView provider name.
 456         val webViewPackageName = webViewPackageInfo.packageName
 457
 458         // Create the spannable string builder.
 459         val webViewProviderStringBuilder = SpannableStringBuilder(webViewProviderLabel + webViewPackageName)
 460
 461         // Apply the coloration.
 462         webViewProviderStringBuilder.setSpan(blueColorSpan, webViewProviderLabel.length, webViewProviderStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 463
 464         // Display the WebView provider.
 465         webViewProviderTextView.text = webViewProviderStringBuilder
 466
 467         // Only populate the Orbot text view if it is installed.
 468         if (orbot.isNotEmpty()) {
 469             // Setup the label.
 470             val orbotLabel = getString(R.string.orbot)
 471
 472             // Create a spannable string builder.
 473             val orbotStringBuilder = SpannableStringBuilder(orbotLabel + orbot)
 474
 475             // Set the span to display the Orbot version.
 476             orbotStringBuilder.setSpan(blueColorSpan, orbotLabel.length, orbotStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 477
 478             // Display the string in the text view.
 479             orbotTextView.text = orbotStringBuilder
 480         } else {  // Orbot is not installed.
 481             // Hide the Orbot text view.
 482             orbotTextView.visibility = View.GONE
 483         }
 484
 485         // Only populate the I2P text view if it is installed.
 486         if (i2p.isNotEmpty()) {
 487             // Setup the label.
 488             val i2pLabel = getString(R.string.i2p)
 489
 490             // Create a spannable string builder.
 491             val i2pStringBuilder = SpannableStringBuilder(i2pLabel + i2p)
 492
 493             // Set the span to display the I2P version.
 494             i2pStringBuilder.setSpan(blueColorSpan, i2pLabel.length, i2pStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 495
 496             // Display the string in the text view.
 497             i2pTextView.text = i2pStringBuilder
 498         } else {  // I2P is not installed.
 499             // Hide the I2P text view.
 500             i2pTextView.visibility = View.GONE
 501         }
 502
 503         // Only populate the OpenKeychain text view if it is installed.
 504         if (openKeychain.isNotEmpty()) {
 505             // Setup the label.
 506             val openKeychainLabel = getString(R.string.openkeychain)
 507
 508             // Create a spannable string builder.
 509             val openKeychainStringBuilder = SpannableStringBuilder(openKeychainLabel + openKeychain)
 510
 511             // Set the span to display the OpenKeychain version.
 512             openKeychainStringBuilder.setSpan(blueColorSpan, openKeychainLabel.length, openKeychainStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 513
 514             // Display the string in the text view.
 515             openKeychainTextView.text = openKeychainStringBuilder
 516         } else {  //OpenKeychain is not installed.
 517             // Hide the OpenKeychain text view.
 518             openKeychainTextView.visibility = View.GONE
 519         }
 520
 521         // Display the package signature.
 522         try {
 523             // Get the first package signature.  Suppress the lint warning about the need to be careful in implementing comparison of certificates for security purposes.
 524             // Once the minimum API >= 28, `GET_SIGNING_CERTIFICATES` can be used instead.  Once the minimum API >= 33, the newer `getPackageInfo()` may be used.
 525             @Suppress("DEPRECATION")
 526             @SuppressLint("PackageManagerGetSignatures") val packageSignature = requireContext().packageManager.getPackageInfo(requireContext().packageName,PackageManager.GET_SIGNATURES)
 527                 .signatures[0]
 528
 529             // Convert the signature to a byte array input stream.
 530             val certificateByteArrayInputStream: InputStream = ByteArrayInputStream(packageSignature.toByteArray())
 531
 532             // Display the certificate information on the screen.
 533             try {
 534                 // Instantiate a certificate factory.
 535                 val certificateFactory = CertificateFactory.getInstance("X509")
 536
 537                 // Generate an X509 certificate.
 538                 val x509Certificate = certificateFactory.generateCertificate(certificateByteArrayInputStream) as X509Certificate
 539
 540                 // Store the individual sections of the certificate.
 541                 val issuerDNPrincipal = x509Certificate.issuerDN
 542                 val subjectDNPrincipal = x509Certificate.subjectDN
 543                 val startDate = x509Certificate.notBefore
 544                 val endDate = x509Certificate.notAfter
 545                 val certificateVersion = x509Certificate.version
 546                 val serialNumberBigInteger = x509Certificate.serialNumber
 547                 val signatureAlgorithmNameString = x509Certificate.sigAlgName
 548
 549                 // Create a spannable string builder for each text view that needs multiple colors of text.
 550                 val issuerDNStringBuilder = SpannableStringBuilder(issuerDNLabel + issuerDNPrincipal.toString())
 551                 val subjectDNStringBuilder = SpannableStringBuilder(subjectDNLabel + subjectDNPrincipal.toString())
 552                 val startDateStringBuilder = SpannableStringBuilder(startDateLabel + DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.LONG).format(startDate))
 553                 val endDataStringBuilder = SpannableStringBuilder(endDateLabel + DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.LONG).format(endDate))
 554                 val certificateVersionStringBuilder = SpannableStringBuilder(certificateVersionLabel + certificateVersion)
 555                 val serialNumberStringBuilder = SpannableStringBuilder(serialNumberLabel + serialNumberBigInteger)
 556                 val signatureAlgorithmStringBuilder = SpannableStringBuilder(signatureAlgorithmLabel + signatureAlgorithmNameString)
 557
 558                 // Setup the spans to display the device information in blue.  `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
 559                 issuerDNStringBuilder.setSpan(blueColorSpan, issuerDNLabel.length, issuerDNStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 560                 subjectDNStringBuilder.setSpan(blueColorSpan, subjectDNLabel.length, subjectDNStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 561                 startDateStringBuilder.setSpan(blueColorSpan, startDateLabel.length, startDateStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 562                 endDataStringBuilder.setSpan(blueColorSpan, endDateLabel.length, endDataStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 563                 certificateVersionStringBuilder.setSpan(blueColorSpan, certificateVersionLabel.length, certificateVersionStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 564                 serialNumberStringBuilder.setSpan(blueColorSpan, serialNumberLabel.length, serialNumberStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 565                 signatureAlgorithmStringBuilder.setSpan(blueColorSpan, signatureAlgorithmLabel.length, signatureAlgorithmStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 566
 567                 // Display the strings in the text boxes.
 568                 certificateIssuerDnTextView.text = issuerDNStringBuilder
 569                 certificateSubjectDnTextView.text = subjectDNStringBuilder
 570                 certificateStartDateTextView.text = startDateStringBuilder
 571                 certificateEndDateTextView.text = endDataStringBuilder
 572                 certificateVersionTextView.text = certificateVersionStringBuilder
 573                 certificateSerialNumberTextView.text = serialNumberStringBuilder
 574                 certificateSignatureAlgorithmTextView.text = signatureAlgorithmStringBuilder
 575             } catch (certificateException: CertificateException) {
 576                 // Do nothing if there is a certificate error.
 577             }
 578
 579             // Get a handle for the runtime.
 580             runtime = Runtime.getRuntime()
 581
 582             // Get a handle for the activity manager.
 583             activityManager = requireActivity().getSystemService(Context.ACTIVITY_SERVICE) as ActivityManager
 584
 585             // Instantiate a memory info variable.
 586             memoryInfo = ActivityManager.MemoryInfo()
 587
 588             // Define a number format.
 589             numberFormat = NumberFormat.getInstance()
 590
 591             // Set the minimum and maximum number of fraction digits.
 592             numberFormat.minimumFractionDigits = 2
 593             numberFormat.maximumFractionDigits = 2
 594
 595             // Update the memory usage.
 596             updateMemoryUsage(requireActivity())
 597         } catch (e: PackageManager.NameNotFoundException) {
 598             // Do nothing if the package manager says Privacy Browser isn't installed.
 599         }
 600
 601         // Scroll the tab if the saved instance state is not null.
 602         if (savedInstanceState != null) {
 603             aboutVersionLayout.post {
 604                 aboutVersionLayout.scrollX = savedInstanceState.getInt("scroll_x")
 605                 aboutVersionLayout.scrollY = savedInstanceState.getInt("scroll_y")
 606             }
 607         }
 608
 609         // Return the tab layout.
 610         return aboutVersionLayout
 611     }
 612
 613     override fun onCreateOptionsMenu(menu: Menu, menuInflater: MenuInflater) {
 614         // Inflate the about version menu.
 615         menuInflater.inflate(R.menu.about_version_options_menu, menu)
 616
 617         // Run the default commands.
 618         super.onCreateOptionsMenu(menu, menuInflater)
 619     }
 620
 621     override fun onOptionsItemSelected(menuItem: MenuItem): Boolean {
 622         // Run the appropriate commands.
 623         when (menuItem.itemId) {
 624             R.id.copy -> {  // Copy.
 625                 // Get the about version string.
 626                 val aboutVersionString = getAboutVersionString()
 627
 628                 // Get a handle for the clipboard manager.
 629                 val clipboardManager = (requireActivity().getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager)
 630
 631                 // Save the about version string in a clip data.
 632                 val aboutVersionClipData = ClipData.newPlainText(getString(R.string.about), aboutVersionString)
 633
 634                 // Place the clip data on the clipboard.
 635                 clipboardManager.setPrimaryClip(aboutVersionClipData)
 636
 637                 // Display a snackbar.
 638                 Snackbar.make(aboutVersionLayout, R.string.version_info_copied, Snackbar.LENGTH_SHORT).show()
 639
 640                 // Consume the event.
 641                 return true
 642             }
 643
 644             R.id.share -> {  // Share.
 645                 // Get the about version string.
 646                 val aboutString = getAboutVersionString()
 647
 648                 // Create an email intent.
 649                 val emailIntent = Intent(Intent.ACTION_SEND)
 650
 651                 // Add the about version string to the intent.
 652                 emailIntent.putExtra(Intent.EXTRA_TEXT, aboutString)
 653
 654                 // Set the MIME type.
 655                 emailIntent.type = "text/plain"
 656
 657                 // Set the intent to open in a new task.
 658                 emailIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
 659
 660                 // Make it so.
 661                 startActivity(Intent.createChooser(emailIntent, getString(R.string.share)))
 662
 663                 // Consume the event.
 664                 return true
 665             }
 666
 667             R.id.save_text -> {  // Save text.
 668                 // Open the file picker.
 669                 saveAboutVersionTextActivityResultLauncher.launch(getString(R.string.privacy_browser_version_txt, BuildConfig.VERSION_NAME))
 670
 671                 // Consume the event.
 672                 return true
 673             }
 674
 675             R.id.save_image -> {  // Save image.
 676                 // Open the file picker.
 677                 saveAboutVersionImageActivityResultLauncher.launch(getString(R.string.privacy_browser_version_png, BuildConfig.VERSION_NAME))
 678
 679                 // Consume the event.
 680                 return true
 681             }
 682             else -> {  // The home button was selected.
 683                 // Run the parents class on return.
 684                 return super.onOptionsItemSelected(menuItem)
 685             }
 686         }
 687     }
 688
 689     override fun onSaveInstanceState(savedInstanceState: Bundle) {
 690         // Run the default commands.
 691         super.onSaveInstanceState(savedInstanceState)
 692
 693         // Save the scroll positions.
 694         savedInstanceState.putInt("scroll_x", aboutVersionLayout.scrollX)
 695         savedInstanceState.putInt("scroll_y", aboutVersionLayout.scrollY)
 696     }
 697
 698     override fun onPause() {
 699         // Run the default commands.
 700         super.onPause()
 701
 702         // Pause the updating of the memory usage.
 703         updateMemoryUsageBoolean = false
 704     }
 705
 706     override fun onResume() {
 707         // Run the default commands.
 708         super.onResume()
 709
 710         // Resume the updating of the memory usage.
 711         updateMemoryUsageBoolean = true
 712     }
 713
 714     private fun updateMemoryUsage(activity: Activity) {
 715         try {
 716             // Update the memory usage if enabled.
 717             if (updateMemoryUsageBoolean) {
 718                 // Populate the memory info variable.
 719                 activityManager.getMemoryInfo(memoryInfo)
 720
 721                 // Get the app memory information.
 722                 val appAvailableMemoryLong = runtime.freeMemory()
 723                 val appTotalMemoryLong = runtime.totalMemory()
 724                 val appMaximumMemoryLong = runtime.maxMemory()
 725
 726                 // Calculate the app consumed memory.
 727                 val appConsumedMemoryLong = appTotalMemoryLong - appAvailableMemoryLong
 728
 729                 // Get the system memory information.
 730                 val systemTotalMemoryLong = memoryInfo.totalMem
 731                 val systemAvailableMemoryLong = memoryInfo.availMem
 732
 733                 // Calculate the system consumed memory.
 734                 val systemConsumedMemoryLong = systemTotalMemoryLong - systemAvailableMemoryLong
 735
 736                 // Convert the memory information into mebibytes.
 737                 val appConsumedMemoryFloat = appConsumedMemoryLong.toFloat() / MEBIBYTE
 738                 val appAvailableMemoryFloat = appAvailableMemoryLong.toFloat() / MEBIBYTE
 739                 val appTotalMemoryFloat = appTotalMemoryLong.toFloat() / MEBIBYTE
 740                 val appMaximumMemoryFloat = appMaximumMemoryLong.toFloat() / MEBIBYTE
 741                 val systemConsumedMemoryFloat = systemConsumedMemoryLong.toFloat() / MEBIBYTE
 742                 val systemAvailableMemoryFloat = systemAvailableMemoryLong.toFloat() / MEBIBYTE
 743                 val systemTotalMemoryFloat = systemTotalMemoryLong.toFloat() / MEBIBYTE
 744
 745                 // Get the mebibyte string.
 746                 val mebibyte = getString(R.string.mebibyte)
 747
 748                 // Calculate the mebibyte length.
 749                 val mebibyteLength = mebibyte.length
 750
 751                 // Create spannable string builders.
 752                 val appConsumedMemoryStringBuilder = SpannableStringBuilder(appConsumedMemoryLabel + numberFormat.format(appConsumedMemoryFloat.toDouble()) + " " + mebibyte)
 753                 val appAvailableMemoryStringBuilder = SpannableStringBuilder(appAvailableMemoryLabel + numberFormat.format(appAvailableMemoryFloat.toDouble()) + " " + mebibyte)
 754                 val appTotalMemoryStringBuilder = SpannableStringBuilder(appTotalMemoryLabel + numberFormat.format(appTotalMemoryFloat.toDouble()) + " " + mebibyte)
 755                 val appMaximumMemoryStringBuilder = SpannableStringBuilder(appMaximumMemoryLabel + numberFormat.format(appMaximumMemoryFloat.toDouble()) + " " + mebibyte)
 756                 val systemConsumedMemoryStringBuilder = SpannableStringBuilder(systemConsumedMemoryLabel + numberFormat.format(systemConsumedMemoryFloat.toDouble()) + " " + mebibyte)
 757                 val systemAvailableMemoryStringBuilder = SpannableStringBuilder(systemAvailableMemoryLabel + numberFormat.format(systemAvailableMemoryFloat.toDouble()) + " " + mebibyte)
 758                 val systemTotalMemoryStringBuilder = SpannableStringBuilder(systemTotalMemoryLabel + numberFormat.format(systemTotalMemoryFloat.toDouble()) + " " + mebibyte)
 759
 760                 // Setup the spans to display the memory information in blue.  `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
 761                 appConsumedMemoryStringBuilder.setSpan(blueColorSpan, appConsumedMemoryLabel.length, appConsumedMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 762                 appAvailableMemoryStringBuilder.setSpan(blueColorSpan, appAvailableMemoryLabel.length, appAvailableMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 763                 appTotalMemoryStringBuilder.setSpan(blueColorSpan, appTotalMemoryLabel.length, appTotalMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 764                 appMaximumMemoryStringBuilder.setSpan(blueColorSpan, appMaximumMemoryLabel.length, appMaximumMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 765                 systemConsumedMemoryStringBuilder.setSpan(blueColorSpan, systemConsumedMemoryLabel.length, systemConsumedMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 766                 systemAvailableMemoryStringBuilder.setSpan(blueColorSpan, systemAvailableMemoryLabel.length, systemAvailableMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 767                 systemTotalMemoryStringBuilder.setSpan(blueColorSpan, systemTotalMemoryLabel.length, systemTotalMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 768
 769                 // Display the string in the text boxes.
 770                 appConsumedMemoryTextView.text = appConsumedMemoryStringBuilder
 771                 appAvailableMemoryTextView.text = appAvailableMemoryStringBuilder
 772                 appTotalMemoryTextView.text = appTotalMemoryStringBuilder
 773                 appMaximumMemoryTextView.text = appMaximumMemoryStringBuilder
 774                 systemConsumedMemoryTextView.text = systemConsumedMemoryStringBuilder
 775                 systemAvailableMemoryTextView.text = systemAvailableMemoryStringBuilder
 776                 systemTotalMemoryTextView.text = systemTotalMemoryStringBuilder
 777             }
 778
 779             // Schedule another memory update if the activity has not been destroyed.
 780             if (!activity.isDestroyed) {
 781                 // Create a handler to update the memory usage.
 782                 val updateMemoryUsageHandler = Handler(Looper.getMainLooper())
 783
 784                 // Create a runnable to update the memory usage.
 785                 val updateMemoryUsageRunnable = Runnable { updateMemoryUsage(activity) }
 786
 787                 // Update the memory usage after 1000 milliseconds
 788                 updateMemoryUsageHandler.postDelayed(updateMemoryUsageRunnable, 1000)
 789             }
 790         } catch (exception: Exception) {
 791             // Do nothing.
 792         }
 793     }
 794
 795     private fun getAboutVersionString(): String {
 796         // Initialize an about version string builder.
 797         val aboutVersionStringBuilder = StringBuilder()
 798
 799         // Populate the about version string builder.
 800         aboutVersionStringBuilder.append(privacyBrowserTextView.text)
 801         aboutVersionStringBuilder.append("\n")
 802         aboutVersionStringBuilder.append(versionTextView.text)
 803         aboutVersionStringBuilder.append("\n\n")
 804         aboutVersionStringBuilder.append(hardwareTextView.text)
 805         aboutVersionStringBuilder.append("\n")
 806         aboutVersionStringBuilder.append(brandTextView.text)
 807         aboutVersionStringBuilder.append("\n")
 808         aboutVersionStringBuilder.append(manufacturerTextView.text)
 809         aboutVersionStringBuilder.append("\n")
 810         aboutVersionStringBuilder.append(modelTextView.text)
 811         aboutVersionStringBuilder.append("\n")
 812         aboutVersionStringBuilder.append(deviceTextView.text)
 813         aboutVersionStringBuilder.append("\n")
 814         aboutVersionStringBuilder.append(bootloaderTextView.text)
 815         aboutVersionStringBuilder.append("\n")
 816         if (radioTextView.visibility == View.VISIBLE) {
 817             aboutVersionStringBuilder.append(radioTextView.text)
 818             aboutVersionStringBuilder.append("\n")
 819         }
 820         aboutVersionStringBuilder.append("\n")
 821         aboutVersionStringBuilder.append(softwareTextView.text)
 822         aboutVersionStringBuilder.append("\n")
 823         aboutVersionStringBuilder.append(androidTextView.text)
 824         aboutVersionStringBuilder.append("\n")
 825         if (securityPatchTextView.visibility == View.VISIBLE) {
 826             aboutVersionStringBuilder.append(securityPatchTextView.text)
 827             aboutVersionStringBuilder.append("\n")
 828         }
 829         aboutVersionStringBuilder.append(buildTextView.text)
 830         aboutVersionStringBuilder.append("\n")
 831         aboutVersionStringBuilder.append(kernelTextView.text)
 832         aboutVersionStringBuilder.append("\n")
 833         if (webViewProviderTextView.visibility == View.VISIBLE) {
 834             aboutVersionStringBuilder.append(webViewProviderTextView.text)
 835             aboutVersionStringBuilder.append("\n")
 836         }
 837         aboutVersionStringBuilder.append(webViewVersionTextView.text)
 838         aboutVersionStringBuilder.append("\n")
 839         if (orbotTextView.visibility == View.VISIBLE) {
 840             aboutVersionStringBuilder.append(orbotTextView.text)
 841             aboutVersionStringBuilder.append("\n")
 842         }
 843         if (i2pTextView.visibility == View.VISIBLE) {
 844             aboutVersionStringBuilder.append(i2pTextView.text)
 845             aboutVersionStringBuilder.append("\n")
 846         }
 847         if (openKeychainTextView.visibility == View.VISIBLE) {
 848             aboutVersionStringBuilder.append(openKeychainTextView.text)
 849             aboutVersionStringBuilder.append("\n")
 850         }
 851         aboutVersionStringBuilder.append("\n")
 852         aboutVersionStringBuilder.append(memoryUsageTextView.text)
 853         aboutVersionStringBuilder.append("\n")
 854         aboutVersionStringBuilder.append(appConsumedMemoryTextView.text)
 855         aboutVersionStringBuilder.append("\n")
 856         aboutVersionStringBuilder.append(appAvailableMemoryTextView.text)
 857         aboutVersionStringBuilder.append("\n")
 858         aboutVersionStringBuilder.append(appTotalMemoryTextView.text)
 859         aboutVersionStringBuilder.append("\n")
 860         aboutVersionStringBuilder.append(appMaximumMemoryTextView.text)
 861         aboutVersionStringBuilder.append("\n")
 862         aboutVersionStringBuilder.append(systemConsumedMemoryTextView.text)
 863         aboutVersionStringBuilder.append("\n")
 864         aboutVersionStringBuilder.append(systemAvailableMemoryTextView.text)
 865         aboutVersionStringBuilder.append("\n")
 866         aboutVersionStringBuilder.append(systemTotalMemoryTextView.text)
 867         aboutVersionStringBuilder.append("\n\n")
 868         aboutVersionStringBuilder.append(filterListsTextView.text)
 869         aboutVersionStringBuilder.append("\n")
 870         aboutVersionStringBuilder.append(easyListTextView.text)
 871         aboutVersionStringBuilder.append("\n")
 872         aboutVersionStringBuilder.append(easyPrivacyTextView.text)
 873         aboutVersionStringBuilder.append("\n")
 874         aboutVersionStringBuilder.append(fanboyAnnoyanceTextView.text)
 875         aboutVersionStringBuilder.append("\n")
 876         aboutVersionStringBuilder.append(fanboySocialTextView.text)
 877         aboutVersionStringBuilder.append("\n")
 878         aboutVersionStringBuilder.append(ultraListTextView.text)
 879         aboutVersionStringBuilder.append("\n")
 880         aboutVersionStringBuilder.append(ultraPrivacyTextView.text)
 881         aboutVersionStringBuilder.append("\n\n")
 882         aboutVersionStringBuilder.append(packageSignatureTextView.text)
 883         aboutVersionStringBuilder.append("\n")
 884         aboutVersionStringBuilder.append(certificateIssuerDnTextView.text)
 885         aboutVersionStringBuilder.append("\n")
 886         aboutVersionStringBuilder.append(certificateSubjectDnTextView.text)
 887         aboutVersionStringBuilder.append("\n")
 888         aboutVersionStringBuilder.append(certificateStartDateTextView.text)
 889         aboutVersionStringBuilder.append("\n")
 890         aboutVersionStringBuilder.append(certificateEndDateTextView.text)
 891         aboutVersionStringBuilder.append("\n")
 892         aboutVersionStringBuilder.append(certificateVersionTextView.text)
 893         aboutVersionStringBuilder.append("\n")
 894         aboutVersionStringBuilder.append(certificateSerialNumberTextView.text)
 895         aboutVersionStringBuilder.append("\n")
 896         aboutVersionStringBuilder.append(certificateSignatureAlgorithmTextView.text)
 897
 898         // Return the string.
 899         return aboutVersionStringBuilder.toString()
 900     }
 901 }