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()) { 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()) { 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.fanboy_annoyance_label) + "  "
 290         val fanboySocialLabel = getString(R.string.fanboy_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.
 324             requireContext().packageManager.getPackageInfo("org.torproject.android", 0).versionName
 325         } catch (exception: PackageManager.NameNotFoundException) {  // Orbot is not installed.
 326             // Store an empty string.
 327             ""
 328         }
 329
 330         // Get the I2P version name if I2P is installed.
 331         val i2p: String = try {
 332             // Store the version name.
 333             requireContext().packageManager.getPackageInfo("net.i2p.android.router", 0).versionName
 334         } catch (exception: PackageManager.NameNotFoundException) {  // I2P is not installed.
 335             // Store an empty string.
 336             ""
 337         }
 338
 339         // Get the OpenKeychain version name if it is installed.
 340         val openKeychain: String = try {
 341             // Store the version name.
 342             requireContext().packageManager.getPackageInfo("org.sufficientlysecure.keychain", 0).versionName
 343         } catch (exception: PackageManager.NameNotFoundException) {  // OpenKeychain is not installed.
 344             // Store an empty string.
 345             ""
 346         }
 347
 348         // Create a spannable string builder for the hardware and software text views that need multiple colors of text.
 349         val brandStringBuilder = SpannableStringBuilder(brandLabel + brand)
 350         val manufacturerStringBuilder = SpannableStringBuilder(manufacturerLabel + manufacturer)
 351         val modelStringBuilder = SpannableStringBuilder(modelLabel + model)
 352         val deviceStringBuilder = SpannableStringBuilder(deviceLabel + device)
 353         val bootloaderStringBuilder = SpannableStringBuilder(bootloaderLabel + bootloader)
 354         val androidStringBuilder = SpannableStringBuilder(androidLabel + android)
 355         val buildStringBuilder = SpannableStringBuilder(buildLabel + build)
 356         val kernelStringBuilder = SpannableStringBuilder(kernelLabel + kernel)
 357         val webViewVersionStringBuilder = SpannableStringBuilder(webViewVersionLabel + webView)
 358         val easyListStringBuilder = SpannableStringBuilder(easyListLabel + blocklistVersions[0])
 359         val easyPrivacyStringBuilder = SpannableStringBuilder(easyPrivacyLabel + blocklistVersions[1])
 360         val fanboyAnnoyanceStringBuilder = SpannableStringBuilder(fanboyAnnoyanceLabel + blocklistVersions[2])
 361         val fanboySocialStringBuilder = SpannableStringBuilder(fanboySocialLabel + blocklistVersions[3])
 362         val ultraListStringBuilder = SpannableStringBuilder(ultraListLabel + blocklistVersions[4])
 363         val ultraPrivacyStringBuilder = SpannableStringBuilder(ultraPrivacyLabel + blocklistVersions[5])
 364
 365         // Set the blue color span according to the theme.  The deprecated `getColor()` must be used until the minimum API >= 23.
 366         blueColorSpan = ForegroundColorSpan(requireContext().getColor(R.color.alt_blue_text))
 367
 368         // Set the spans to display the device information in blue.  `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
 369         brandStringBuilder.setSpan(blueColorSpan, brandLabel.length, brandStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 370         manufacturerStringBuilder.setSpan(blueColorSpan, manufacturerLabel.length, manufacturerStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 371         modelStringBuilder.setSpan(blueColorSpan, modelLabel.length, modelStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 372         deviceStringBuilder.setSpan(blueColorSpan, deviceLabel.length, deviceStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 373         bootloaderStringBuilder.setSpan(blueColorSpan, bootloaderLabel.length, bootloaderStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 374         androidStringBuilder.setSpan(blueColorSpan, androidLabel.length, androidStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 375         buildStringBuilder.setSpan(blueColorSpan, buildLabel.length, buildStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 376         kernelStringBuilder.setSpan(blueColorSpan, kernelLabel.length, kernelStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 377         webViewVersionStringBuilder.setSpan(blueColorSpan, webViewVersionLabel.length, webViewVersionStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 378         easyListStringBuilder.setSpan(blueColorSpan, easyListLabel.length, easyListStringBuilder.length, Spanned.SPAN_INCLUSIVE_EXCLUSIVE)
 379         easyPrivacyStringBuilder.setSpan(blueColorSpan, easyPrivacyLabel.length, easyPrivacyStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 380         fanboyAnnoyanceStringBuilder.setSpan(blueColorSpan, fanboyAnnoyanceLabel.length, fanboyAnnoyanceStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 381         fanboySocialStringBuilder.setSpan(blueColorSpan, fanboySocialLabel.length, fanboySocialStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 382         ultraListStringBuilder.setSpan(blueColorSpan, ultraListLabel.length, ultraListStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 383         ultraPrivacyStringBuilder.setSpan(blueColorSpan, ultraPrivacyLabel.length, ultraPrivacyStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 384
 385         // Display the strings in the text boxes.
 386         versionTextView.text = version
 387         brandTextView.text = brandStringBuilder
 388         manufacturerTextView.text = manufacturerStringBuilder
 389         modelTextView.text = modelStringBuilder
 390         deviceTextView.text = deviceStringBuilder
 391         bootloaderTextView.text = bootloaderStringBuilder
 392         androidTextView.text = androidStringBuilder
 393         buildTextView.text = buildStringBuilder
 394         kernelTextView.text = kernelStringBuilder
 395         webViewVersionTextView.text = webViewVersionStringBuilder
 396         easyListTextView.text = easyListStringBuilder
 397         easyPrivacyTextView.text = easyPrivacyStringBuilder
 398         fanboyAnnoyanceTextView.text = fanboyAnnoyanceStringBuilder
 399         fanboySocialTextView.text = fanboySocialStringBuilder
 400         ultraListTextView.text = ultraListStringBuilder
 401         ultraPrivacyTextView.text = ultraPrivacyStringBuilder
 402
 403         // Only populate the radio text view if there is a radio in the device.
 404         // 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>
 405         if (radio != null && radio.isNotEmpty()) {
 406             // Setup the label.
 407             val radioLabel = getString(R.string.radio) + "  "
 408
 409             // Create a spannable string builder.
 410             val radioStringBuilder = SpannableStringBuilder(radioLabel + radio)
 411
 412             // Set the span to display the radio in blue.
 413             radioStringBuilder.setSpan(blueColorSpan, radioLabel.length, radioStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 414
 415             // Display the string in the text view.
 416             radioTextView.text = radioStringBuilder
 417         } else {  // This device does not have a radio.
 418             // Hide the radio text view.
 419             radioTextView.visibility = View.GONE
 420         }
 421
 422         // Setup the label.
 423         val securityPatchLabel = getString(R.string.security_patch) + "  "
 424
 425         // Get the security patch version.
 426         val securityPatch = Build.VERSION.SECURITY_PATCH
 427
 428         // Create a spannable string builder.
 429         val securityPatchStringBuilder = SpannableStringBuilder(securityPatchLabel + securityPatch)
 430
 431         // Set the span to display the security patch version in blue.
 432         securityPatchStringBuilder.setSpan(blueColorSpan, securityPatchLabel.length, securityPatchStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 433
 434         // Display the string in the text view.
 435         securityPatchTextView.text = securityPatchStringBuilder
 436
 437         // Create the WebView provider label.
 438         val webViewProviderLabel = getString(R.string.webview_provider) + "  "
 439
 440         // Get the current WebView package info.
 441         val webViewPackageInfo = WebViewCompat.getCurrentWebViewPackage(requireContext())!!
 442
 443         // Get the WebView provider name.
 444         val webViewPackageName = webViewPackageInfo.packageName
 445
 446         // Create the spannable string builder.
 447         val webViewProviderStringBuilder = SpannableStringBuilder(webViewProviderLabel + webViewPackageName)
 448
 449         // Apply the coloration.
 450         webViewProviderStringBuilder.setSpan(blueColorSpan, webViewProviderLabel.length, webViewProviderStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 451
 452         // Display the WebView provider.
 453         webViewProviderTextView.text = webViewProviderStringBuilder
 454
 455         // Only populate the Orbot text view if it is installed.
 456         if (orbot.isNotEmpty()) {
 457             // Setup the label.
 458             val orbotLabel = getString(R.string.orbot) + "  "
 459
 460             // Create a spannable string builder.
 461             val orbotStringBuilder = SpannableStringBuilder(orbotLabel + orbot)
 462
 463             // Set the span to display the Orbot version.
 464             orbotStringBuilder.setSpan(blueColorSpan, orbotLabel.length, orbotStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 465
 466             // Display the string in the text view.
 467             orbotTextView.text = orbotStringBuilder
 468         } else {  // Orbot is not installed.
 469             // Hide the Orbot text view.
 470             orbotTextView.visibility = View.GONE
 471         }
 472
 473         // Only populate the I2P text view if it is installed.
 474         if (i2p.isNotEmpty()) {
 475             // Setup the label.
 476             val i2pLabel = getString(R.string.i2p) + "  "
 477
 478             // Create a spannable string builder.
 479             val i2pStringBuilder = SpannableStringBuilder(i2pLabel + i2p)
 480
 481             // Set the span to display the I2P version.
 482             i2pStringBuilder.setSpan(blueColorSpan, i2pLabel.length, i2pStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 483
 484             // Display the string in the text view.
 485             i2pTextView.text = i2pStringBuilder
 486         } else {  // I2P is not installed.
 487             // Hide the I2P text view.
 488             i2pTextView.visibility = View.GONE
 489         }
 490
 491         // Only populate the OpenKeychain text view if it is installed.
 492         if (openKeychain.isNotEmpty()) {
 493             // Setup the label.
 494             val openKeychainLabel = getString(R.string.openkeychain) + "  "
 495
 496             // Create a spannable string builder.
 497             val openKeychainStringBuilder = SpannableStringBuilder(openKeychainLabel + openKeychain)
 498
 499             // Set the span to display the OpenKeychain version.
 500             openKeychainStringBuilder.setSpan(blueColorSpan, openKeychainLabel.length, openKeychainStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 501
 502             // Display the string in the text view.
 503             openKeychainTextView.text = openKeychainStringBuilder
 504         } else {  //OpenKeychain is not installed.
 505             // Hide the OpenKeychain text view.
 506             openKeychainTextView.visibility = View.GONE
 507         }
 508
 509         // Display the package signature.
 510         try {
 511             // Get the first package signature.  Suppress the lint warning about the need to be careful in implementing comparison of certificates for security purposes.
 512             // Once the minimum API >= 28, `GET_SIGNING_CERTIFICATES` can be used instead.
 513             @SuppressLint("PackageManagerGetSignatures") val packageSignature = requireContext().packageManager.getPackageInfo(requireContext().packageName,PackageManager.GET_SIGNATURES)
 514                 .signatures[0]
 515
 516             // Convert the signature to a byte array input stream.
 517             val certificateByteArrayInputStream: InputStream = ByteArrayInputStream(packageSignature.toByteArray())
 518
 519             // Display the certificate information on the screen.
 520             try {
 521                 // Instantiate a certificate factory.
 522                 val certificateFactory = CertificateFactory.getInstance("X509")
 523
 524                 // Generate an X509 certificate.
 525                 val x509Certificate = certificateFactory.generateCertificate(certificateByteArrayInputStream) as X509Certificate
 526
 527                 // Store the individual sections of the certificate.
 528                 val issuerDNPrincipal = x509Certificate.issuerDN
 529                 val subjectDNPrincipal = x509Certificate.subjectDN
 530                 val startDate = x509Certificate.notBefore
 531                 val endDate = x509Certificate.notAfter
 532                 val certificateVersion = x509Certificate.version
 533                 val serialNumberBigInteger = x509Certificate.serialNumber
 534                 val signatureAlgorithmNameString = x509Certificate.sigAlgName
 535
 536                 // Create a spannable string builder for each text view that needs multiple colors of text.
 537                 val issuerDNStringBuilder = SpannableStringBuilder(issuerDNLabel + issuerDNPrincipal.toString())
 538                 val subjectDNStringBuilder = SpannableStringBuilder(subjectDNLabel + subjectDNPrincipal.toString())
 539                 val startDateStringBuilder = SpannableStringBuilder(startDateLabel + DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.LONG).format(startDate))
 540                 val endDataStringBuilder = SpannableStringBuilder(endDateLabel + DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.LONG).format(endDate))
 541                 val certificateVersionStringBuilder = SpannableStringBuilder(certificateVersionLabel + certificateVersion)
 542                 val serialNumberStringBuilder = SpannableStringBuilder(serialNumberLabel + serialNumberBigInteger)
 543                 val signatureAlgorithmStringBuilder = SpannableStringBuilder(signatureAlgorithmLabel + signatureAlgorithmNameString)
 544
 545                 // Setup the spans to display the device information in blue.  `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
 546                 issuerDNStringBuilder.setSpan(blueColorSpan, issuerDNLabel.length, issuerDNStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 547                 subjectDNStringBuilder.setSpan(blueColorSpan, subjectDNLabel.length, subjectDNStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 548                 startDateStringBuilder.setSpan(blueColorSpan, startDateLabel.length, startDateStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 549                 endDataStringBuilder.setSpan(blueColorSpan, endDateLabel.length, endDataStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 550                 certificateVersionStringBuilder.setSpan(blueColorSpan, certificateVersionLabel.length, certificateVersionStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 551                 serialNumberStringBuilder.setSpan(blueColorSpan, serialNumberLabel.length, serialNumberStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 552                 signatureAlgorithmStringBuilder.setSpan(blueColorSpan, signatureAlgorithmLabel.length, signatureAlgorithmStringBuilder.length, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 553
 554                 // Display the strings in the text boxes.
 555                 certificateIssuerDnTextView.text = issuerDNStringBuilder
 556                 certificateSubjectDnTextView.text = subjectDNStringBuilder
 557                 certificateStartDateTextView.text = startDateStringBuilder
 558                 certificateEndDateTextView.text = endDataStringBuilder
 559                 certificateVersionTextView.text = certificateVersionStringBuilder
 560                 certificateSerialNumberTextView.text = serialNumberStringBuilder
 561                 certificateSignatureAlgorithmTextView.text = signatureAlgorithmStringBuilder
 562             } catch (certificateException: CertificateException) {
 563                 // Do nothing if there is a certificate error.
 564             }
 565
 566             // Get a handle for the runtime.
 567             runtime = Runtime.getRuntime()
 568
 569             // Get a handle for the activity manager.
 570             activityManager = requireActivity().getSystemService(Context.ACTIVITY_SERVICE) as ActivityManager
 571
 572             // Instantiate a memory info variable.
 573             memoryInfo = ActivityManager.MemoryInfo()
 574
 575             // Define a number format.
 576             numberFormat = NumberFormat.getInstance()
 577
 578             // Set the minimum and maximum number of fraction digits.
 579             numberFormat.minimumFractionDigits = 2
 580             numberFormat.maximumFractionDigits = 2
 581
 582             // Update the memory usage.
 583             updateMemoryUsage(requireActivity())
 584         } catch (e: PackageManager.NameNotFoundException) {
 585             // Do nothing if the package manager says Privacy Browser isn't installed.
 586         }
 587
 588         // Scroll the tab if the saved instance state is not null.
 589         if (savedInstanceState != null) {
 590             aboutVersionLayout.post {
 591                 aboutVersionLayout.scrollX = savedInstanceState.getInt("scroll_x")
 592                 aboutVersionLayout.scrollY = savedInstanceState.getInt("scroll_y")
 593             }
 594         }
 595
 596         // Return the tab layout.
 597         return aboutVersionLayout
 598     }
 599
 600     override fun onCreateOptionsMenu(menu: Menu, menuInflater: MenuInflater) {
 601         // Inflate the about version menu.
 602         menuInflater.inflate(R.menu.about_version_options_menu, menu)
 603
 604         // Run the default commands.
 605         super.onCreateOptionsMenu(menu, menuInflater)
 606     }
 607
 608     override fun onOptionsItemSelected(menuItem: MenuItem): Boolean {
 609         // Run the appropriate commands.
 610         when (menuItem.itemId) {
 611             R.id.copy -> {  // Copy.
 612                 // Get the about version string.
 613                 val aboutVersionString = getAboutVersionString()
 614
 615                 // Get a handle for the clipboard manager.
 616                 val clipboardManager = (requireActivity().getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager)
 617
 618                 // Save the about version string in a clip data.
 619                 val aboutVersionClipData = ClipData.newPlainText(getString(R.string.about), aboutVersionString)
 620
 621                 // Place the clip data on the clipboard.
 622                 clipboardManager.setPrimaryClip(aboutVersionClipData)
 623
 624                 // Display a snackbar.
 625                 Snackbar.make(aboutVersionLayout, R.string.version_info_copied, Snackbar.LENGTH_SHORT).show()
 626
 627                 // Consume the event.
 628                 return true
 629             }
 630
 631             R.id.share -> {  // Share.
 632                 // Get the about version string.
 633                 val aboutString = getAboutVersionString()
 634
 635                 // Create an email intent.
 636                 val emailIntent = Intent(Intent.ACTION_SEND)
 637
 638                 // Add the about version string to the intent.
 639                 emailIntent.putExtra(Intent.EXTRA_TEXT, aboutString)
 640
 641                 // Set the MIME type.
 642                 emailIntent.type = "text/plain"
 643
 644                 // Set the intent to open in a new task.
 645                 emailIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
 646
 647                 // Make it so.
 648                 startActivity(Intent.createChooser(emailIntent, getString(R.string.share)))
 649
 650                 // Consume the event.
 651                 return true
 652             }
 653
 654             R.id.save_text -> {  // Save text.
 655                 // Open the file picker.
 656                 saveAboutVersionTextActivityResultLauncher.launch(getString(R.string.privacy_browser_version_txt, BuildConfig.VERSION_NAME))
 657
 658                 // Consume the event.
 659                 return true
 660             }
 661
 662             R.id.save_image -> {  // Save image.
 663                 // Open the file picker.
 664                 saveAboutVersionImageActivityResultLauncher.launch(getString(R.string.privacy_browser_version_png, BuildConfig.VERSION_NAME))
 665
 666                 // Consume the event.
 667                 return true
 668             }
 669             else -> {  // The home button was selected.
 670                 // Run the parents class on return.
 671                 return super.onOptionsItemSelected(menuItem)
 672             }
 673         }
 674     }
 675
 676     override fun onSaveInstanceState(savedInstanceState: Bundle) {
 677         // Run the default commands.
 678         super.onSaveInstanceState(savedInstanceState)
 679
 680         // Save the scroll positions.
 681         savedInstanceState.putInt("scroll_x", aboutVersionLayout.scrollX)
 682         savedInstanceState.putInt("scroll_y", aboutVersionLayout.scrollY)
 683     }
 684
 685     override fun onPause() {
 686         // Run the default commands.
 687         super.onPause()
 688
 689         // Pause the updating of the memory usage.
 690         updateMemoryUsageBoolean = false
 691     }
 692
 693     override fun onResume() {
 694         // Run the default commands.
 695         super.onResume()
 696
 697         // Resume the updating of the memory usage.
 698         updateMemoryUsageBoolean = true
 699     }
 700
 701     fun updateMemoryUsage(activity: Activity) {
 702         try {
 703             // Update the memory usage if enabled.
 704             if (updateMemoryUsageBoolean) {
 705                 // Populate the memory info variable.
 706                 activityManager.getMemoryInfo(memoryInfo)
 707
 708                 // Get the app memory information.
 709                 val appAvailableMemoryLong = runtime.freeMemory()
 710                 val appTotalMemoryLong = runtime.totalMemory()
 711                 val appMaximumMemoryLong = runtime.maxMemory()
 712
 713                 // Calculate the app consumed memory.
 714                 val appConsumedMemoryLong = appTotalMemoryLong - appAvailableMemoryLong
 715
 716                 // Get the system memory information.
 717                 val systemTotalMemoryLong = memoryInfo.totalMem
 718                 val systemAvailableMemoryLong = memoryInfo.availMem
 719
 720                 // Calculate the system consumed memory.
 721                 val systemConsumedMemoryLong = systemTotalMemoryLong - systemAvailableMemoryLong
 722
 723                 // Convert the memory information into mebibytes.
 724                 val appConsumedMemoryFloat = appConsumedMemoryLong.toFloat() / MEBIBYTE
 725                 val appAvailableMemoryFloat = appAvailableMemoryLong.toFloat() / MEBIBYTE
 726                 val appTotalMemoryFloat = appTotalMemoryLong.toFloat() / MEBIBYTE
 727                 val appMaximumMemoryFloat = appMaximumMemoryLong.toFloat() / MEBIBYTE
 728                 val systemConsumedMemoryFloat = systemConsumedMemoryLong.toFloat() / MEBIBYTE
 729                 val systemAvailableMemoryFloat = systemAvailableMemoryLong.toFloat() / MEBIBYTE
 730                 val systemTotalMemoryFloat = systemTotalMemoryLong.toFloat() / MEBIBYTE
 731
 732                 // Get the mebibyte string.
 733                 val mebibyte = getString(R.string.mebibyte)
 734
 735                 // Calculate the mebibyte length.
 736                 val mebibyteLength = mebibyte.length
 737
 738                 // Create spannable string builders.
 739                 val appConsumedMemoryStringBuilder = SpannableStringBuilder(appConsumedMemoryLabel + numberFormat.format(appConsumedMemoryFloat.toDouble()) + " " + mebibyte)
 740                 val appAvailableMemoryStringBuilder = SpannableStringBuilder(appAvailableMemoryLabel + numberFormat.format(appAvailableMemoryFloat.toDouble()) + " " + mebibyte)
 741                 val appTotalMemoryStringBuilder = SpannableStringBuilder(appTotalMemoryLabel + numberFormat.format(appTotalMemoryFloat.toDouble()) + " " + mebibyte)
 742                 val appMaximumMemoryStringBuilder = SpannableStringBuilder(appMaximumMemoryLabel + numberFormat.format(appMaximumMemoryFloat.toDouble()) + " " + mebibyte)
 743                 val systemConsumedMemoryStringBuilder = SpannableStringBuilder(systemConsumedMemoryLabel + numberFormat.format(systemConsumedMemoryFloat.toDouble()) + " " + mebibyte)
 744                 val systemAvailableMemoryStringBuilder = SpannableStringBuilder(systemAvailableMemoryLabel + numberFormat.format(systemAvailableMemoryFloat.toDouble()) + " " + mebibyte)
 745                 val systemTotalMemoryStringBuilder = SpannableStringBuilder(systemTotalMemoryLabel + numberFormat.format(systemTotalMemoryFloat.toDouble()) + " " + mebibyte)
 746
 747                 // Setup the spans to display the memory information in blue.  `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
 748                 appConsumedMemoryStringBuilder.setSpan(blueColorSpan, appConsumedMemoryLabel.length, appConsumedMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 749                 appAvailableMemoryStringBuilder.setSpan(blueColorSpan, appAvailableMemoryLabel.length, appAvailableMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 750                 appTotalMemoryStringBuilder.setSpan(blueColorSpan, appTotalMemoryLabel.length, appTotalMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 751                 appMaximumMemoryStringBuilder.setSpan(blueColorSpan, appMaximumMemoryLabel.length, appMaximumMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 752                 systemConsumedMemoryStringBuilder.setSpan(blueColorSpan, systemConsumedMemoryLabel.length, systemConsumedMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 753                 systemAvailableMemoryStringBuilder.setSpan(blueColorSpan, systemAvailableMemoryLabel.length, systemAvailableMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 754                 systemTotalMemoryStringBuilder.setSpan(blueColorSpan, systemTotalMemoryLabel.length, systemTotalMemoryStringBuilder.length - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE)
 755
 756                 // Display the string in the text boxes.
 757                 appConsumedMemoryTextView.text = appConsumedMemoryStringBuilder
 758                 appAvailableMemoryTextView.text = appAvailableMemoryStringBuilder
 759                 appTotalMemoryTextView.text = appTotalMemoryStringBuilder
 760                 appMaximumMemoryTextView.text = appMaximumMemoryStringBuilder
 761                 systemConsumedMemoryTextView.text = systemConsumedMemoryStringBuilder
 762                 systemAvailableMemoryTextView.text = systemAvailableMemoryStringBuilder
 763                 systemTotalMemoryTextView.text = systemTotalMemoryStringBuilder
 764             }
 765
 766             // Schedule another memory update if the activity has not been destroyed.
 767             if (!activity.isDestroyed) {
 768                 // Create a handler to update the memory usage.
 769                 val updateMemoryUsageHandler = Handler(Looper.getMainLooper())
 770
 771                 // Create a runnable to update the memory usage.
 772                 val updateMemoryUsageRunnable = Runnable { updateMemoryUsage(activity) }
 773
 774                 // Update the memory usage after 1000 milliseconds
 775                 updateMemoryUsageHandler.postDelayed(updateMemoryUsageRunnable, 1000)
 776             }
 777         } catch (exception: Exception) {
 778             // Do nothing.
 779         }
 780     }
 781
 782     fun getAboutVersionString(): String {
 783         // Initialize an about version string builder.
 784         val aboutVersionStringBuilder = StringBuilder()
 785
 786         // Populate the about version string builder.
 787         aboutVersionStringBuilder.append(privacyBrowserTextView.text)
 788         aboutVersionStringBuilder.append("\n")
 789         aboutVersionStringBuilder.append(versionTextView.text)
 790         aboutVersionStringBuilder.append("\n\n")
 791         aboutVersionStringBuilder.append(hardwareTextView.text)
 792         aboutVersionStringBuilder.append("\n")
 793         aboutVersionStringBuilder.append(brandTextView.text)
 794         aboutVersionStringBuilder.append("\n")
 795         aboutVersionStringBuilder.append(manufacturerTextView.text)
 796         aboutVersionStringBuilder.append("\n")
 797         aboutVersionStringBuilder.append(modelTextView.text)
 798         aboutVersionStringBuilder.append("\n")
 799         aboutVersionStringBuilder.append(deviceTextView.text)
 800         aboutVersionStringBuilder.append("\n")
 801         aboutVersionStringBuilder.append(bootloaderTextView.text)
 802         aboutVersionStringBuilder.append("\n")
 803         if (radioTextView.visibility == View.VISIBLE) {
 804             aboutVersionStringBuilder.append(radioTextView.text)
 805             aboutVersionStringBuilder.append("\n")
 806         }
 807         aboutVersionStringBuilder.append("\n")
 808         aboutVersionStringBuilder.append(softwareTextView.text)
 809         aboutVersionStringBuilder.append("\n")
 810         aboutVersionStringBuilder.append(androidTextView.text)
 811         aboutVersionStringBuilder.append("\n")
 812         if (securityPatchTextView.visibility == View.VISIBLE) {
 813             aboutVersionStringBuilder.append(securityPatchTextView.text)
 814             aboutVersionStringBuilder.append("\n")
 815         }
 816         aboutVersionStringBuilder.append(buildTextView.text)
 817         aboutVersionStringBuilder.append("\n")
 818         aboutVersionStringBuilder.append(kernelTextView.text)
 819         aboutVersionStringBuilder.append("\n")
 820         if (webViewProviderTextView.visibility == View.VISIBLE) {
 821             aboutVersionStringBuilder.append(webViewProviderTextView.text)
 822             aboutVersionStringBuilder.append("\n")
 823         }
 824         aboutVersionStringBuilder.append(webViewVersionTextView.text)
 825         aboutVersionStringBuilder.append("\n")
 826         if (orbotTextView.visibility == View.VISIBLE) {
 827             aboutVersionStringBuilder.append(orbotTextView.text)
 828             aboutVersionStringBuilder.append("\n")
 829         }
 830         if (i2pTextView.visibility == View.VISIBLE) {
 831             aboutVersionStringBuilder.append(i2pTextView.text)
 832             aboutVersionStringBuilder.append("\n")
 833         }
 834         if (openKeychainTextView.visibility == View.VISIBLE) {
 835             aboutVersionStringBuilder.append(openKeychainTextView.text)
 836             aboutVersionStringBuilder.append("\n")
 837         }
 838         aboutVersionStringBuilder.append("\n")
 839         aboutVersionStringBuilder.append(memoryUsageTextView.text)
 840         aboutVersionStringBuilder.append("\n")
 841         aboutVersionStringBuilder.append(appConsumedMemoryTextView.text)
 842         aboutVersionStringBuilder.append("\n")
 843         aboutVersionStringBuilder.append(appAvailableMemoryTextView.text)
 844         aboutVersionStringBuilder.append("\n")
 845         aboutVersionStringBuilder.append(appTotalMemoryTextView.text)
 846         aboutVersionStringBuilder.append("\n")
 847         aboutVersionStringBuilder.append(appMaximumMemoryTextView.text)
 848         aboutVersionStringBuilder.append("\n")
 849         aboutVersionStringBuilder.append(systemConsumedMemoryTextView.text)
 850         aboutVersionStringBuilder.append("\n")
 851         aboutVersionStringBuilder.append(systemAvailableMemoryTextView.text)
 852         aboutVersionStringBuilder.append("\n")
 853         aboutVersionStringBuilder.append(systemTotalMemoryTextView.text)
 854         aboutVersionStringBuilder.append("\n\n")
 855         aboutVersionStringBuilder.append(blocklistsTextView.text)
 856         aboutVersionStringBuilder.append("\n")
 857         aboutVersionStringBuilder.append(easyListTextView.text)
 858         aboutVersionStringBuilder.append("\n")
 859         aboutVersionStringBuilder.append(easyPrivacyTextView.text)
 860         aboutVersionStringBuilder.append("\n")
 861         aboutVersionStringBuilder.append(fanboyAnnoyanceTextView.text)
 862         aboutVersionStringBuilder.append("\n")
 863         aboutVersionStringBuilder.append(fanboySocialTextView.text)
 864         aboutVersionStringBuilder.append("\n")
 865         aboutVersionStringBuilder.append(ultraListTextView.text)
 866         aboutVersionStringBuilder.append("\n")
 867         aboutVersionStringBuilder.append(ultraPrivacyTextView.text)
 868         aboutVersionStringBuilder.append("\n\n")
 869         aboutVersionStringBuilder.append(packageSignatureTextView.text)
 870         aboutVersionStringBuilder.append("\n")
 871         aboutVersionStringBuilder.append(certificateIssuerDnTextView.text)
 872         aboutVersionStringBuilder.append("\n")
 873         aboutVersionStringBuilder.append(certificateSubjectDnTextView.text)
 874         aboutVersionStringBuilder.append("\n")
 875         aboutVersionStringBuilder.append(certificateStartDateTextView.text)
 876         aboutVersionStringBuilder.append("\n")
 877         aboutVersionStringBuilder.append(certificateEndDateTextView.text)
 878         aboutVersionStringBuilder.append("\n")
 879         aboutVersionStringBuilder.append(certificateVersionTextView.text)
 880         aboutVersionStringBuilder.append("\n")
 881         aboutVersionStringBuilder.append(certificateSerialNumberTextView.text)
 882         aboutVersionStringBuilder.append("\n")
 883         aboutVersionStringBuilder.append(certificateSignatureAlgorithmTextView.text)
 884
 885         // Return the string.
 886         return aboutVersionStringBuilder.toString()
 887     }
 888 }