privacybrowser/fragments/AboutVersionFragment.java

   1 /*
   2  * Copyright © 2016-2020 Soren Stoutner <soren@stoutner.com>.
   3  *
   4  * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
   5  *
   6  * Privacy Browser 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 is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with Privacy Browser.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 package com.stoutner.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.PackageInfo;
  30 import android.content.pm.PackageManager;
  31 import android.content.pm.Signature;
  32 import android.content.res.Configuration;
  33 import android.os.Build;
  34 import android.os.Bundle;
  35 import android.os.Handler;
  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 com.google.android.material.snackbar.Snackbar;
  49 import com.stoutner.privacybrowser.BuildConfig;
  50 import com.stoutner.privacybrowser.R;
  51 import com.stoutner.privacybrowser.dialogs.SaveDialog;
  52
  53 import java.io.ByteArrayInputStream;
  54 import java.io.InputStream;
  55 import java.math.BigInteger;
  56 import java.security.Principal;
  57 import java.security.cert.CertificateException;
  58 import java.security.cert.CertificateFactory;
  59 import java.security.cert.X509Certificate;
  60 import java.text.DateFormat;
  61 import java.text.NumberFormat;
  62 import java.util.Date;
  63
  64 import androidx.annotation.NonNull;
  65 import androidx.fragment.app.DialogFragment;
  66 import androidx.fragment.app.Fragment;
  67 import androidx.webkit.WebViewCompat;
  68
  69 public class AboutVersionFragment extends Fragment {
  70     // Declare the class constants.
  71     final static String BLOCKLIST_VERSIONS = "blocklist_versions";
  72     final long MEBIBYTE = 1048576;
  73
  74     // Declare the class variables.
  75     private boolean updateMemoryUsageBoolean = true;
  76     private String[] blocklistVersions;
  77     private View aboutVersionLayout;
  78     private String appConsumedMemoryLabel;
  79     private String appAvailableMemoryLabel;
  80     private String appTotalMemoryLabel;
  81     private String appMaximumMemoryLabel;
  82     private String systemConsumedMemoryLabel;
  83     private String systemAvailableMemoryLabel;
  84     private String systemTotalMemoryLabel;
  85     private Runtime runtime;
  86     private ActivityManager activityManager;
  87     private ActivityManager.MemoryInfo memoryInfo;
  88     private NumberFormat numberFormat;
  89     private ForegroundColorSpan blueColorSpan;
  90
  91     // Declare the class views.
  92     private TextView privacyBrowserTextView;
  93     private TextView versionTextView;
  94     private TextView hardwareTextView;
  95     private TextView brandTextView;
  96     private TextView manufacturerTextView;
  97     private TextView modelTextView;
  98     private TextView deviceTextView;
  99     private TextView bootloaderTextView;
 100     private TextView radioTextView;
 101     private TextView softwareTextView;
 102     private TextView androidTextView;
 103     private TextView securityPatchTextView;
 104     private TextView buildTextView;
 105     private TextView webViewProviderTextView;
 106     private TextView webViewVersionTextView;
 107     private TextView orbotTextView;
 108     private TextView i2pTextView;
 109     private TextView openKeychainTextView;
 110     private TextView memoryUsageTextView;
 111     private TextView appConsumedMemoryTextView;
 112     private TextView appAvailableMemoryTextView;
 113     private TextView appTotalMemoryTextView;
 114     private TextView appMaximumMemoryTextView;
 115     private TextView systemConsumedMemoryTextView;
 116     private TextView systemAvailableMemoryTextView;
 117     private TextView systemTotalMemoryTextView;
 118     private TextView blocklistsTextView;
 119     private TextView easyListTextView;
 120     private TextView easyPrivacyTextView;
 121     private TextView fanboyAnnoyanceTextView;
 122     private TextView fanboySocialTextView;
 123     private TextView ultraListTextView;
 124     private TextView ultraPrivacyTextView;
 125     private TextView packageSignatureTextView;
 126     private TextView certificateIssuerDnTextView;
 127     private TextView certificateSubjectDnTextView;
 128     private TextView certificateStartDateTextView;
 129     private TextView certificateEndDateTextView;
 130     private TextView certificateVersionTextView;
 131     private TextView certificateSerialNumberTextView;
 132     private TextView certificateSignatureAlgorithmTextView;
 133
 134     public static AboutVersionFragment createTab(String[] blocklistVersions) {
 135         // Create an arguments bundle.
 136         Bundle argumentsBundle = new Bundle();
 137
 138         // Store the arguments in the bundle.
 139         argumentsBundle.putStringArray(BLOCKLIST_VERSIONS, blocklistVersions);
 140
 141         // Create a new instance of the tab fragment.
 142         AboutVersionFragment aboutVersionFragment = new AboutVersionFragment();
 143
 144         // Add the arguments bundle to the fragment.
 145         aboutVersionFragment.setArguments(argumentsBundle);
 146
 147         // Return the new fragment.
 148         return aboutVersionFragment;
 149     }
 150
 151     @Override
 152     public void onCreate(Bundle savedInstanceState) {
 153         // Run the default commands.
 154         super.onCreate(savedInstanceState);
 155
 156         // Get a handle for the arguments.
 157         Bundle arguments = getArguments();
 158
 159         // Remove the incorrect lint warning below that the arguments might be null.
 160         assert arguments != null;
 161
 162         // Store the arguments in class variables.
 163         blocklistVersions = arguments.getStringArray(BLOCKLIST_VERSIONS);
 164
 165         // Enable the options menu for this fragment.
 166         setHasOptionsMenu(true);
 167     }
 168
 169     @Override
 170     public View onCreateView(@NonNull LayoutInflater layoutInflater, ViewGroup container, Bundle savedInstanceState) {
 171         // Get a handle for the context.
 172         Context context = getContext();
 173
 174         // Remove the incorrect lint warning below that the context might be null.
 175         assert context != null;
 176
 177         // Get the current theme status.
 178         int currentThemeStatus = getResources().getConfiguration().uiMode & Configuration.UI_MODE_NIGHT_MASK;
 179
 180         // 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.
 181         aboutVersionLayout = layoutInflater.inflate(R.layout.about_version, container, false);
 182
 183         // Get handles for the views.
 184         privacyBrowserTextView = aboutVersionLayout.findViewById(R.id.privacy_browser_textview);
 185         versionTextView = aboutVersionLayout.findViewById(R.id.version);
 186         hardwareTextView = aboutVersionLayout.findViewById(R.id.hardware);
 187         brandTextView = aboutVersionLayout.findViewById(R.id.brand);
 188         manufacturerTextView = aboutVersionLayout.findViewById(R.id.manufacturer);
 189         modelTextView = aboutVersionLayout.findViewById(R.id.model);
 190         deviceTextView = aboutVersionLayout.findViewById(R.id.device);
 191         bootloaderTextView = aboutVersionLayout.findViewById(R.id.bootloader);
 192         radioTextView = aboutVersionLayout.findViewById(R.id.radio);
 193         softwareTextView = aboutVersionLayout.findViewById(R.id.software);
 194         androidTextView = aboutVersionLayout.findViewById(R.id.android);
 195         securityPatchTextView = aboutVersionLayout.findViewById(R.id.security_patch);
 196         buildTextView = aboutVersionLayout.findViewById(R.id.build);
 197         webViewProviderTextView = aboutVersionLayout.findViewById(R.id.webview_provider);
 198         webViewVersionTextView = aboutVersionLayout.findViewById(R.id.webview_version);
 199         orbotTextView = aboutVersionLayout.findViewById(R.id.orbot);
 200         i2pTextView = aboutVersionLayout.findViewById(R.id.i2p);
 201         openKeychainTextView = aboutVersionLayout.findViewById(R.id.open_keychain);
 202         memoryUsageTextView = aboutVersionLayout.findViewById(R.id.memory_usage);
 203         appConsumedMemoryTextView = aboutVersionLayout.findViewById(R.id.app_consumed_memory);
 204         appAvailableMemoryTextView = aboutVersionLayout.findViewById(R.id.app_available_memory);
 205         appTotalMemoryTextView = aboutVersionLayout.findViewById(R.id.app_total_memory);
 206         appMaximumMemoryTextView = aboutVersionLayout.findViewById(R.id.app_maximum_memory);
 207         systemConsumedMemoryTextView = aboutVersionLayout.findViewById(R.id.system_consumed_memory);
 208         systemAvailableMemoryTextView = aboutVersionLayout.findViewById(R.id.system_available_memory);
 209         systemTotalMemoryTextView = aboutVersionLayout.findViewById(R.id.system_total_memory);
 210         blocklistsTextView = aboutVersionLayout.findViewById(R.id.blocklists);
 211         easyListTextView = aboutVersionLayout.findViewById(R.id.easylist);
 212         easyPrivacyTextView = aboutVersionLayout.findViewById(R.id.easyprivacy);
 213         fanboyAnnoyanceTextView = aboutVersionLayout.findViewById(R.id.fanboy_annoyance);
 214         fanboySocialTextView = aboutVersionLayout.findViewById(R.id.fanboy_social);
 215         ultraListTextView = aboutVersionLayout.findViewById(R.id.ultralist);
 216         ultraPrivacyTextView = aboutVersionLayout.findViewById(R.id.ultraprivacy);
 217         packageSignatureTextView = aboutVersionLayout.findViewById(R.id.package_signature);
 218         certificateIssuerDnTextView = aboutVersionLayout.findViewById(R.id.certificate_issuer_dn);
 219         certificateSubjectDnTextView = aboutVersionLayout.findViewById(R.id.certificate_subject_dn);
 220         certificateStartDateTextView = aboutVersionLayout.findViewById(R.id.certificate_start_date);
 221         certificateEndDateTextView = aboutVersionLayout.findViewById(R.id.certificate_end_date);
 222         certificateVersionTextView = aboutVersionLayout.findViewById(R.id.certificate_version);
 223         certificateSerialNumberTextView = aboutVersionLayout.findViewById(R.id.certificate_serial_number);
 224         certificateSignatureAlgorithmTextView = aboutVersionLayout.findViewById(R.id.certificate_signature_algorithm);
 225
 226         // Setup the labels.
 227         String version = getString(R.string.version) + " " + BuildConfig.VERSION_NAME + " (" + getString(R.string.version_code) + " " + BuildConfig.VERSION_CODE + ")";
 228         String brandLabel = getString(R.string.brand) + "  ";
 229         String manufacturerLabel = getString(R.string.manufacturer) + "  ";
 230         String modelLabel = getString(R.string.model) + "  ";
 231         String deviceLabel = getString(R.string.device) + "  ";
 232         String bootloaderLabel = getString(R.string.bootloader) + "  ";
 233         String androidLabel = getString(R.string.android) + "  ";
 234         String buildLabel = getString(R.string.build) + "  ";
 235         String webViewVersionLabel = getString(R.string.webview_version) + "  ";
 236         appConsumedMemoryLabel = getString(R.string.app_consumed_memory) + "  ";
 237         appAvailableMemoryLabel = getString(R.string.app_available_memory) + "  ";
 238         appTotalMemoryLabel = getString(R.string.app_total_memory) + "  ";
 239         appMaximumMemoryLabel = getString(R.string.app_maximum_memory) + "  ";
 240         systemConsumedMemoryLabel = getString(R.string.system_consumed_memory) + "  ";
 241         systemAvailableMemoryLabel = getString(R.string.system_available_memory) + "  ";
 242         systemTotalMemoryLabel = getString(R.string.system_total_memory) + "  ";
 243         String easyListLabel = getString(R.string.easylist_label) + "  ";
 244         String easyPrivacyLabel = getString(R.string.easyprivacy_label) + "  ";
 245         String fanboyAnnoyanceLabel = getString(R.string.fanboy_annoyance_label) + "  ";
 246         String fanboySocialLabel = getString(R.string.fanboy_social_label) + "  ";
 247         String ultraListLabel = getString(R.string.ultralist_label) + "  ";
 248         String ultraPrivacyLabel = getString(R.string.ultraprivacy_label) + "  ";
 249         String issuerDNLabel = getString(R.string.issuer_dn) + "  ";
 250         String subjectDNLabel = getString(R.string.subject_dn) + "  ";
 251         String startDateLabel = getString(R.string.start_date) + "  ";
 252         String endDateLabel = getString(R.string.end_date) + "  ";
 253         String certificateVersionLabel = getString(R.string.certificate_version) + "  ";
 254         String serialNumberLabel = getString(R.string.serial_number) + "  ";
 255         String signatureAlgorithmLabel = getString(R.string.signature_algorithm) + "  ";
 256
 257         // 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.
 258         // Once the minimum API >= 26 this can be accomplished with the WebView package info.
 259         View webViewLayout = layoutInflater.inflate(R.layout.bare_webview, container, false);
 260         WebView tabLayoutWebView = webViewLayout.findViewById(R.id.bare_webview);
 261         String userAgentString =  tabLayoutWebView.getSettings().getUserAgentString();
 262
 263         // Get the device's information and store it in strings.
 264         String brand = Build.BRAND;
 265         String manufacturer = Build.MANUFACTURER;
 266         String model = Build.MODEL;
 267         String device = Build.DEVICE;
 268         String bootloader = Build.BOOTLOADER;
 269         String radio = Build.getRadioVersion();
 270         String android = Build.VERSION.RELEASE + " (" + getString(R.string.api) + " " + Build.VERSION.SDK_INT + ")";
 271         String build = Build.DISPLAY;
 272         // Select the substring that begins after `Chrome/` and goes until the next ` `.
 273         String webView = userAgentString.substring(userAgentString.indexOf("Chrome/") + 7, userAgentString.indexOf(" ", userAgentString.indexOf("Chrome/")));
 274
 275         // Get the Orbot version name if Orbot is installed.
 276         String orbot;
 277         try {
 278             // Store the version name.
 279             orbot = context.getPackageManager().getPackageInfo("org.torproject.android", 0).versionName;
 280         } catch (PackageManager.NameNotFoundException exception) {  // Orbot is not installed.
 281             orbot = "";
 282         }
 283
 284         // Get the I2P version name if I2P is installed.
 285         String i2p;
 286         try {
 287             // Store the version name.
 288             i2p = context.getPackageManager().getPackageInfo("net.i2p.android.router", 0).versionName;
 289         } catch (PackageManager.NameNotFoundException exception) {  // I2P is not installed.
 290             i2p = "";
 291         }
 292
 293         // Get the OpenKeychain version name if it is installed.
 294         String openKeychain;
 295         try {
 296             // Store the version name.
 297             openKeychain = context.getPackageManager().getPackageInfo("org.sufficientlysecure.keychain", 0).versionName;
 298         } catch (PackageManager.NameNotFoundException exception) {  // OpenKeychain is not installed.
 299             openKeychain = "";
 300         }
 301
 302         // Create a spannable string builder for the hardware and software text views that needs multiple colors of text.
 303         SpannableStringBuilder brandStringBuilder = new SpannableStringBuilder(brandLabel + brand);
 304         SpannableStringBuilder manufacturerStringBuilder = new SpannableStringBuilder(manufacturerLabel + manufacturer);
 305         SpannableStringBuilder modelStringBuilder = new SpannableStringBuilder(modelLabel + model);
 306         SpannableStringBuilder deviceStringBuilder = new SpannableStringBuilder(deviceLabel + device);
 307         SpannableStringBuilder bootloaderStringBuilder = new SpannableStringBuilder(bootloaderLabel + bootloader);
 308         SpannableStringBuilder androidStringBuilder = new SpannableStringBuilder(androidLabel + android);
 309         SpannableStringBuilder buildStringBuilder = new SpannableStringBuilder(buildLabel + build);
 310         SpannableStringBuilder webViewVersionStringBuilder = new SpannableStringBuilder(webViewVersionLabel + webView);
 311         SpannableStringBuilder easyListStringBuilder = new SpannableStringBuilder(easyListLabel + blocklistVersions[0]);
 312         SpannableStringBuilder easyPrivacyStringBuilder = new SpannableStringBuilder(easyPrivacyLabel + blocklistVersions[1]);
 313         SpannableStringBuilder fanboyAnnoyanceStringBuilder = new SpannableStringBuilder(fanboyAnnoyanceLabel + blocklistVersions[2]);
 314         SpannableStringBuilder fanboySocialStringBuilder = new SpannableStringBuilder(fanboySocialLabel + blocklistVersions[3]);
 315         SpannableStringBuilder ultraListStringBuilder = new SpannableStringBuilder(ultraListLabel + blocklistVersions[4]);
 316         SpannableStringBuilder ultraPrivacyStringBuilder = new SpannableStringBuilder(ultraPrivacyLabel + blocklistVersions[5]);
 317
 318         // Set the blue color span according to the theme.  The deprecated `getResources()` must be used until the minimum API >= 23.
 319         if (currentThemeStatus == Configuration.UI_MODE_NIGHT_NO) {
 320             blueColorSpan = new ForegroundColorSpan(getResources().getColor(R.color.blue_700));
 321         } else {
 322             blueColorSpan = new ForegroundColorSpan(getResources().getColor(R.color.violet_700));
 323         }
 324
 325         // Setup the spans to display the device information in blue.  `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
 326         brandStringBuilder.setSpan(blueColorSpan, brandLabel.length(), brandStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 327         manufacturerStringBuilder.setSpan(blueColorSpan, manufacturerLabel.length(), manufacturerStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 328         modelStringBuilder.setSpan(blueColorSpan, modelLabel.length(), modelStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 329         deviceStringBuilder.setSpan(blueColorSpan, deviceLabel.length(), deviceStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 330         bootloaderStringBuilder.setSpan(blueColorSpan, bootloaderLabel.length(), bootloaderStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 331         androidStringBuilder.setSpan(blueColorSpan, androidLabel.length(), androidStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 332         buildStringBuilder.setSpan(blueColorSpan, buildLabel.length(), buildStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 333         webViewVersionStringBuilder.setSpan(blueColorSpan, webViewVersionLabel.length(), webViewVersionStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 334         easyListStringBuilder.setSpan(blueColorSpan, easyListLabel.length(), easyListStringBuilder.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
 335         easyPrivacyStringBuilder.setSpan(blueColorSpan, easyPrivacyLabel.length(), easyPrivacyStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 336         fanboyAnnoyanceStringBuilder.setSpan(blueColorSpan, fanboyAnnoyanceLabel.length(), fanboyAnnoyanceStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 337         fanboySocialStringBuilder.setSpan(blueColorSpan, fanboySocialLabel.length(), fanboySocialStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 338         ultraListStringBuilder.setSpan(blueColorSpan, ultraListLabel.length(), ultraListStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 339         ultraPrivacyStringBuilder.setSpan(blueColorSpan, ultraPrivacyLabel.length(), ultraPrivacyStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 340
 341         // Display the strings in the text boxes.
 342         versionTextView.setText(version);
 343         brandTextView.setText(brandStringBuilder);
 344         manufacturerTextView.setText(manufacturerStringBuilder);
 345         modelTextView.setText(modelStringBuilder);
 346         deviceTextView.setText(deviceStringBuilder);
 347         bootloaderTextView.setText(bootloaderStringBuilder);
 348         androidTextView.setText(androidStringBuilder);
 349         buildTextView.setText(buildStringBuilder);
 350         webViewVersionTextView.setText(webViewVersionStringBuilder);
 351         easyListTextView.setText(easyListStringBuilder);
 352         easyPrivacyTextView.setText(easyPrivacyStringBuilder);
 353         fanboyAnnoyanceTextView.setText(fanboyAnnoyanceStringBuilder);
 354         fanboySocialTextView.setText(fanboySocialStringBuilder);
 355         ultraListTextView.setText(ultraListStringBuilder);
 356         ultraPrivacyTextView.setText(ultraPrivacyStringBuilder);
 357
 358         // Only populate the radio text view if there is a radio in the device.
 359         if (!radio.isEmpty()) {
 360             String radioLabel = getString(R.string.radio) + "  ";
 361             SpannableStringBuilder radioStringBuilder = new SpannableStringBuilder(radioLabel + radio);
 362             radioStringBuilder.setSpan(blueColorSpan, radioLabel.length(), radioStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 363             radioTextView.setText(radioStringBuilder);
 364         } else {  // This device does not have a radio.
 365             radioTextView.setVisibility(View.GONE);
 366         }
 367
 368         // Build.VERSION.SECURITY_PATCH is only available for SDK_INT >= 23.
 369         if (Build.VERSION.SDK_INT >= 23) {
 370             String securityPatchLabel = getString(R.string.security_patch) + "  ";
 371             String securityPatch = Build.VERSION.SECURITY_PATCH;
 372             SpannableStringBuilder securityPatchStringBuilder = new SpannableStringBuilder(securityPatchLabel + securityPatch);
 373             securityPatchStringBuilder.setSpan(blueColorSpan, securityPatchLabel.length(), securityPatchStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 374             securityPatchTextView.setText(securityPatchStringBuilder);
 375         } else {  // The API < 23.
 376             // Hide the security patch text view.
 377             securityPatchTextView.setVisibility(View.GONE);
 378         }
 379
 380         // Only populate the WebView provider if the SDK >= 21.
 381         if (Build.VERSION.SDK_INT >= 21) {
 382             // Create the WebView provider label.
 383             String webViewProviderLabel = getString(R.string.webview_provider) + "  ";
 384
 385             // Get the current WebView package info.
 386             PackageInfo webViewPackageInfo = WebViewCompat.getCurrentWebViewPackage(context);
 387
 388             // Remove the warning below that the package info might be null.
 389             assert webViewPackageInfo != null;
 390
 391             // Get the WebView provider name.
 392             String webViewPackageName = webViewPackageInfo.packageName;
 393
 394             // Create the spannable string builder.
 395             SpannableStringBuilder webViewProviderStringBuilder = new SpannableStringBuilder(webViewProviderLabel + webViewPackageName);
 396
 397             // Apply the coloration.
 398             webViewProviderStringBuilder.setSpan(blueColorSpan, webViewProviderLabel.length(), webViewProviderStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 399
 400             // Display the WebView provider.
 401             webViewProviderTextView.setText(webViewProviderStringBuilder);
 402         } else {  // The API < 21.
 403             // Hide the WebView provider text view.
 404             webViewProviderTextView.setVisibility(View.GONE);
 405         }
 406
 407         // Only populate the Orbot text view if it is installed.
 408         if (!orbot.isEmpty()) {
 409             String orbotLabel = getString(R.string.orbot) + "  ";
 410             SpannableStringBuilder orbotStringBuilder = new SpannableStringBuilder(orbotLabel + orbot);
 411             orbotStringBuilder.setSpan(blueColorSpan, orbotLabel.length(), orbotStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 412             orbotTextView.setText(orbotStringBuilder);
 413         } else {  // Orbot is not installed.
 414             orbotTextView.setVisibility(View.GONE);
 415         }
 416
 417         // Only populate the I2P text view if it is installed.
 418         if (!i2p.isEmpty()) {
 419             String i2pLabel = getString(R.string.i2p)  + "  ";
 420             SpannableStringBuilder i2pStringBuilder = new SpannableStringBuilder(i2pLabel + i2p);
 421             i2pStringBuilder.setSpan(blueColorSpan, i2pLabel.length(), i2pStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 422             i2pTextView.setText(i2pStringBuilder);
 423         } else {  // I2P is not installed.
 424             i2pTextView.setVisibility(View.GONE);
 425         }
 426
 427         // Only populate the OpenKeychain text view if it is installed.
 428         if (!openKeychain.isEmpty()) {
 429             String openKeychainLabel = getString(R.string.openkeychain) + "  ";
 430             SpannableStringBuilder openKeychainStringBuilder = new SpannableStringBuilder(openKeychainLabel + openKeychain);
 431             openKeychainStringBuilder.setSpan(blueColorSpan, openKeychainLabel.length(), openKeychainStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 432             openKeychainTextView.setText(openKeychainStringBuilder);
 433         } else {  //OpenKeychain is not installed.
 434             openKeychainTextView.setVisibility(View.GONE);
 435         }
 436
 437         // Display the package signature.
 438         try {
 439             // Get the first package signature.  Suppress the lint warning about the need to be careful in implementing comparison of certificates for security purposes.
 440             @SuppressLint("PackageManagerGetSignatures") Signature packageSignature = context.getPackageManager().getPackageInfo(context.getPackageName(),
 441                     PackageManager.GET_SIGNATURES).signatures[0];
 442
 443             // Convert the signature to a byte array input stream.
 444             InputStream certificateByteArrayInputStream = new ByteArrayInputStream(packageSignature.toByteArray());
 445
 446             // Display the certificate information on the screen.
 447             try {
 448                 // Instantiate a `CertificateFactory`.
 449                 CertificateFactory certificateFactory = CertificateFactory.getInstance("X509");
 450
 451                 // Generate an `X509Certificate`.
 452                 X509Certificate x509Certificate = (X509Certificate) certificateFactory.generateCertificate(certificateByteArrayInputStream);
 453
 454                 // Store the individual sections of the certificate that we are interested in.
 455                 Principal issuerDNPrincipal = x509Certificate.getIssuerDN();
 456                 Principal subjectDNPrincipal = x509Certificate.getSubjectDN();
 457                 Date startDate = x509Certificate.getNotBefore();
 458                 Date endDate = x509Certificate.getNotAfter();
 459                 int certificateVersion = x509Certificate.getVersion();
 460                 BigInteger serialNumberBigInteger = x509Certificate.getSerialNumber();
 461                 String signatureAlgorithmNameString = x509Certificate.getSigAlgName();
 462
 463                 // Create a `SpannableStringBuilder` for each `TextView` that needs multiple colors of text.
 464                 SpannableStringBuilder issuerDNStringBuilder = new SpannableStringBuilder(issuerDNLabel + issuerDNPrincipal.toString());
 465                 SpannableStringBuilder subjectDNStringBuilder = new SpannableStringBuilder(subjectDNLabel + subjectDNPrincipal.toString());
 466                 SpannableStringBuilder startDateStringBuilder = new SpannableStringBuilder(startDateLabel + DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.LONG).format(startDate));
 467                 SpannableStringBuilder endDataStringBuilder = new SpannableStringBuilder(endDateLabel + DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.LONG).format(endDate));
 468                 SpannableStringBuilder certificateVersionStringBuilder = new SpannableStringBuilder(certificateVersionLabel + certificateVersion);
 469                 SpannableStringBuilder serialNumberStringBuilder = new SpannableStringBuilder(serialNumberLabel + serialNumberBigInteger);
 470                 SpannableStringBuilder signatureAlgorithmStringBuilder = new SpannableStringBuilder(signatureAlgorithmLabel + signatureAlgorithmNameString);
 471
 472                 // Setup the spans to display the device information in blue.  `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
 473                 issuerDNStringBuilder.setSpan(blueColorSpan, issuerDNLabel.length(), issuerDNStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 474                 subjectDNStringBuilder.setSpan(blueColorSpan, subjectDNLabel.length(), subjectDNStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 475                 startDateStringBuilder.setSpan(blueColorSpan, startDateLabel.length(), startDateStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 476                 endDataStringBuilder.setSpan(blueColorSpan, endDateLabel.length(), endDataStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 477                 certificateVersionStringBuilder.setSpan(blueColorSpan, certificateVersionLabel.length(), certificateVersionStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 478                 serialNumberStringBuilder.setSpan(blueColorSpan, serialNumberLabel.length(), serialNumberStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 479                 signatureAlgorithmStringBuilder.setSpan(blueColorSpan, signatureAlgorithmLabel.length(), signatureAlgorithmStringBuilder.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 480
 481                 // Display the strings in the text boxes.
 482                 certificateIssuerDnTextView.setText(issuerDNStringBuilder);
 483                 certificateSubjectDnTextView.setText(subjectDNStringBuilder);
 484                 certificateStartDateTextView.setText(startDateStringBuilder);
 485                 certificateEndDateTextView.setText(endDataStringBuilder);
 486                 certificateVersionTextView.setText(certificateVersionStringBuilder);
 487                 certificateSerialNumberTextView.setText(serialNumberStringBuilder);
 488                 certificateSignatureAlgorithmTextView.setText(signatureAlgorithmStringBuilder);
 489             } catch (CertificateException e) {
 490                 // Do nothing if there is a certificate error.
 491             }
 492
 493             // Get a handle for the runtime.
 494             runtime = Runtime.getRuntime();
 495
 496             // Get a handle for the activity.
 497             Activity activity = getActivity();
 498
 499             // Remove the incorrect lint warning below that the activity might be null.
 500             assert activity != null;
 501
 502             // Get a handle for the activity manager.
 503             activityManager = (ActivityManager) activity.getSystemService(Context.ACTIVITY_SERVICE);
 504
 505             // Remove the incorrect lint warning below that the activity manager might be null.
 506             assert activityManager != null;
 507
 508             // Instantiate a memory info variable.
 509             memoryInfo = new ActivityManager.MemoryInfo();
 510
 511             // Define a number format.
 512             numberFormat = NumberFormat.getInstance();
 513
 514             // Set the minimum and maximum number of fraction digits.
 515             numberFormat.setMinimumFractionDigits(2);
 516             numberFormat.setMaximumFractionDigits(2);
 517
 518             // Update the memory usage.
 519             updateMemoryUsage(getActivity());
 520         } catch (PackageManager.NameNotFoundException e) {
 521             // Do nothing if `PackageManager` says Privacy Browser isn't installed.
 522         }
 523
 524         // Scroll the tab if the saved instance state is not null.
 525         if (savedInstanceState != null) {
 526             aboutVersionLayout.post(() -> {
 527                 aboutVersionLayout.setScrollX(savedInstanceState.getInt("scroll_x"));
 528                 aboutVersionLayout.setScrollY(savedInstanceState.getInt("scroll_y"));
 529             });
 530         }
 531
 532         // Return the tab layout.
 533         return aboutVersionLayout;
 534     }
 535
 536     @Override
 537     public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater menuInflater) {
 538         // Inflate the about version menu.
 539         menuInflater.inflate(R.menu.about_version_options_menu, menu);
 540
 541         // Run the default commands.
 542         super.onCreateOptionsMenu(menu, menuInflater);
 543     }
 544
 545     @Override
 546     public boolean onOptionsItemSelected(@NonNull MenuItem menuItem) {
 547         // Remove the incorrect lint warning below that the activity might be null.
 548         assert getActivity() != null;
 549
 550         // Get the ID of the menu item that was selected.
 551         int menuItemId = menuItem.getItemId();
 552
 553         // Run the appropriate commands.
 554         if (menuItemId == R.id.copy) {  // Copy.
 555             // Get the about version string.
 556             String aboutVersionString = getAboutVersionString();
 557
 558             // Get a handle for the clipboard manager.
 559             ClipboardManager clipboardManager = (ClipboardManager) getActivity().getSystemService(Context.CLIPBOARD_SERVICE);
 560
 561             // Remove the incorrect lint error below that the clipboard manager might be null.
 562             assert clipboardManager != null;
 563
 564             // Save the about version string in a clip data.
 565             ClipData aboutVersionClipData = ClipData.newPlainText(getString(R.string.about), aboutVersionString);
 566
 567             // Place the clip data on the clipboard.
 568             clipboardManager.setPrimaryClip(aboutVersionClipData);
 569
 570             // Display a snackbar.
 571             Snackbar.make(aboutVersionLayout, R.string.version_info_copied, Snackbar.LENGTH_SHORT).show();
 572
 573             // Consume the event.
 574             return true;
 575         } else if (menuItemId == R.id.share) {  // Share.
 576             // Get the about version string.
 577             String aboutString = getAboutVersionString();
 578
 579             // Create an email intent.
 580             Intent emailIntent = new Intent(Intent.ACTION_SEND);
 581
 582             // Add the about version string to the intent.
 583             emailIntent.putExtra(Intent.EXTRA_TEXT, aboutString);
 584
 585             // Set the MIME type.
 586             emailIntent.setType("text/plain");
 587
 588             // Set the intent to open in a new task.
 589             emailIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
 590
 591             // Make it so.
 592             startActivity(Intent.createChooser(emailIntent, getString(R.string.share)));
 593
 594             // Consume the event.
 595             return true;
 596         } else if (menuItemId == R.id.save_text) {  // Save text.
 597             // Instantiate the save alert dialog.
 598             DialogFragment saveTextDialogFragment = SaveDialog.save(SaveDialog.SAVE_ABOUT_VERSION_TEXT);
 599
 600             // Show the save alert dialog.
 601             saveTextDialogFragment.show(getActivity().getSupportFragmentManager(), getString(R.string.save_dialog));
 602
 603             // Consume the event.
 604             return true;
 605         } else if (menuItemId == R.id.save_image) {  // Save image.
 606             // Instantiate the save alert dialog.
 607             DialogFragment saveImageDialogFragment = SaveDialog.save(SaveDialog.SAVE_ABOUT_VERSION_IMAGE);
 608
 609             // Show the save alert dialog.
 610             saveImageDialogFragment.show(getActivity().getSupportFragmentManager(), getString(R.string.save_dialog));
 611
 612             // Consume the event.
 613             return true;
 614         } else {  // The home button was selected.
 615             // Return the parent class.
 616             return super.onOptionsItemSelected(menuItem);
 617         }
 618     }
 619
 620     @Override
 621     public void onSaveInstanceState(@NonNull Bundle savedInstanceState) {
 622         // Run the default commands.
 623         super.onSaveInstanceState(savedInstanceState);
 624
 625         // Save the scroll positions if the layout is not null, which can happen if a tab is not currently selected.
 626         if (aboutVersionLayout != null) {
 627             savedInstanceState.putInt("scroll_x", aboutVersionLayout.getScrollX());
 628             savedInstanceState.putInt("scroll_y", aboutVersionLayout.getScrollY());
 629         }
 630     }
 631
 632     @Override
 633     public void onPause() {
 634         // Run the default commands.
 635         super.onPause();
 636
 637         // Pause the updating of the memory usage.
 638         updateMemoryUsageBoolean = false;
 639     }
 640
 641     @Override
 642     public void onResume() {
 643         // Run the default commands.
 644         super.onResume();
 645
 646         // Resume the updating of the memory usage.
 647         updateMemoryUsageBoolean = true;
 648     }
 649
 650     public void updateMemoryUsage(Activity activity) {
 651         try {
 652             // Update the memory usage if enabled.
 653             if (updateMemoryUsageBoolean) {
 654                 // Populate the memory info variable.
 655                 activityManager.getMemoryInfo(memoryInfo);
 656
 657                 // Get the app memory information.
 658                 long appAvailableMemoryLong = runtime.freeMemory();
 659                 long appTotalMemoryLong = runtime.totalMemory();
 660                 long appMaximumMemoryLong = runtime.maxMemory();
 661
 662                 // Calculate the app consumed memory.
 663                 long appConsumedMemoryLong = appTotalMemoryLong - appAvailableMemoryLong;
 664
 665                 // Get the system memory information.
 666                 long systemTotalMemoryLong = memoryInfo.totalMem;
 667                 long systemAvailableMemoryLong = memoryInfo.availMem;
 668
 669                 // Calculate the system consumed memory.
 670                 long systemConsumedMemoryLong = systemTotalMemoryLong - systemAvailableMemoryLong;
 671
 672                 // Convert the memory information into mebibytes.
 673                 float appConsumedMemoryFloat = (float) appConsumedMemoryLong / MEBIBYTE;
 674                 float appAvailableMemoryFloat = (float) appAvailableMemoryLong / MEBIBYTE;
 675                 float appTotalMemoryFloat = (float) appTotalMemoryLong / MEBIBYTE;
 676                 float appMaximumMemoryFloat = (float) appMaximumMemoryLong / MEBIBYTE;
 677                 float systemConsumedMemoryFloat = (float) systemConsumedMemoryLong / MEBIBYTE;
 678                 float systemAvailableMemoryFloat = (float) systemAvailableMemoryLong / MEBIBYTE;
 679                 float systemTotalMemoryFloat = (float) systemTotalMemoryLong / MEBIBYTE;
 680
 681                 // Get the mebibyte string.
 682                 String mebibyte = getString(R.string.mebibyte);
 683
 684                 // Calculate the mebibyte length.
 685                 int mebibyteLength = mebibyte.length();
 686
 687                 // Create spannable string builders.
 688                 SpannableStringBuilder appConsumedMemoryStringBuilder = new SpannableStringBuilder(appConsumedMemoryLabel + numberFormat.format(appConsumedMemoryFloat) + " " + mebibyte);
 689                 SpannableStringBuilder appAvailableMemoryStringBuilder = new SpannableStringBuilder(appAvailableMemoryLabel + numberFormat.format(appAvailableMemoryFloat) + " " + mebibyte);
 690                 SpannableStringBuilder appTotalMemoryStringBuilder = new SpannableStringBuilder(appTotalMemoryLabel + numberFormat.format(appTotalMemoryFloat) + " " + mebibyte);
 691                 SpannableStringBuilder appMaximumMemoryStringBuilder = new SpannableStringBuilder(appMaximumMemoryLabel + numberFormat.format(appMaximumMemoryFloat) + " " + mebibyte);
 692                 SpannableStringBuilder systemConsumedMemoryStringBuilder = new SpannableStringBuilder(systemConsumedMemoryLabel + numberFormat.format(systemConsumedMemoryFloat) + " " + mebibyte);
 693                 SpannableStringBuilder systemAvailableMemoryStringBuilder = new SpannableStringBuilder(systemAvailableMemoryLabel + numberFormat.format(systemAvailableMemoryFloat) + " " + mebibyte);
 694                 SpannableStringBuilder systemTotalMemoryStringBuilder = new SpannableStringBuilder(systemTotalMemoryLabel + numberFormat.format(systemTotalMemoryFloat) + " " + mebibyte);
 695
 696                 // Setup the spans to display the memory information in blue.  `SPAN_INCLUSIVE_INCLUSIVE` allows the span to grow in either direction.
 697                 appConsumedMemoryStringBuilder.setSpan(blueColorSpan, appConsumedMemoryLabel.length(), appConsumedMemoryStringBuilder.length() - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 698                 appAvailableMemoryStringBuilder.setSpan(blueColorSpan, appAvailableMemoryLabel.length(), appAvailableMemoryStringBuilder.length() - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 699                 appTotalMemoryStringBuilder.setSpan(blueColorSpan, appTotalMemoryLabel.length(), appTotalMemoryStringBuilder.length() - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 700                 appMaximumMemoryStringBuilder.setSpan(blueColorSpan, appMaximumMemoryLabel.length(), appMaximumMemoryStringBuilder.length() - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 701                 systemConsumedMemoryStringBuilder.setSpan(blueColorSpan, systemConsumedMemoryLabel.length(), systemConsumedMemoryStringBuilder.length() - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 702                 systemAvailableMemoryStringBuilder.setSpan(blueColorSpan, systemAvailableMemoryLabel.length(), systemAvailableMemoryStringBuilder.length() - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 703                 systemTotalMemoryStringBuilder.setSpan(blueColorSpan, systemTotalMemoryLabel.length(), systemTotalMemoryStringBuilder.length() - mebibyteLength, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 704
 705                 // Display the string in the text boxes.
 706                 appConsumedMemoryTextView.setText(appConsumedMemoryStringBuilder);
 707                 appAvailableMemoryTextView.setText(appAvailableMemoryStringBuilder);
 708                 appTotalMemoryTextView.setText(appTotalMemoryStringBuilder);
 709                 appMaximumMemoryTextView.setText(appMaximumMemoryStringBuilder);
 710                 systemConsumedMemoryTextView.setText(systemConsumedMemoryStringBuilder);
 711                 systemAvailableMemoryTextView.setText(systemAvailableMemoryStringBuilder);
 712                 systemTotalMemoryTextView.setText(systemTotalMemoryStringBuilder);
 713             }
 714
 715             // Schedule another memory update if the activity has not been destroyed.
 716             if (!activity.isDestroyed()) {
 717                 // Create a handler to update the memory usage.
 718                 Handler updateMemoryUsageHandler = new Handler();
 719
 720                 // Create a runnable to update the memory usage.
 721                 Runnable updateMemoryUsageRunnable = () -> updateMemoryUsage(activity);
 722
 723                 // Update the memory usage after 1000 milliseconds
 724                 updateMemoryUsageHandler.postDelayed(updateMemoryUsageRunnable, 1000);
 725             }
 726         } catch (Exception exception) {
 727             // Do nothing.
 728         }
 729     }
 730
 731     public String getAboutVersionString() {
 732         // Initialize an about version string builder.
 733         StringBuilder aboutVersionStringBuilder = new StringBuilder();
 734
 735         // Populate the about version string builder.
 736         aboutVersionStringBuilder.append(privacyBrowserTextView.getText());
 737         aboutVersionStringBuilder.append("\n");
 738         aboutVersionStringBuilder.append(versionTextView.getText());
 739         aboutVersionStringBuilder.append("\n\n");
 740         aboutVersionStringBuilder.append(hardwareTextView.getText());
 741         aboutVersionStringBuilder.append("\n");
 742         aboutVersionStringBuilder.append(brandTextView.getText());
 743         aboutVersionStringBuilder.append("\n");
 744         aboutVersionStringBuilder.append(manufacturerTextView.getText());
 745         aboutVersionStringBuilder.append("\n");
 746         aboutVersionStringBuilder.append(modelTextView.getText());
 747         aboutVersionStringBuilder.append("\n");
 748         aboutVersionStringBuilder.append(deviceTextView.getText());
 749         aboutVersionStringBuilder.append("\n");
 750         aboutVersionStringBuilder.append(bootloaderTextView.getText());
 751         aboutVersionStringBuilder.append("\n");
 752         if (radioTextView.getVisibility() == View.VISIBLE) {
 753             aboutVersionStringBuilder.append(radioTextView.getText());
 754             aboutVersionStringBuilder.append("\n");
 755         }
 756         aboutVersionStringBuilder.append("\n");
 757         aboutVersionStringBuilder.append(softwareTextView.getText());
 758         aboutVersionStringBuilder.append("\n");
 759         aboutVersionStringBuilder.append(androidTextView.getText());
 760         aboutVersionStringBuilder.append("\n");
 761         if (securityPatchTextView.getVisibility() == View.VISIBLE) {
 762             aboutVersionStringBuilder.append(securityPatchTextView.getText());
 763             aboutVersionStringBuilder.append("\n");
 764         }
 765         aboutVersionStringBuilder.append(buildTextView.getText());
 766         aboutVersionStringBuilder.append("\n");
 767         if (webViewProviderTextView.getVisibility() == View.VISIBLE) {
 768             aboutVersionStringBuilder.append(webViewProviderTextView.getText());
 769             aboutVersionStringBuilder.append("\n");
 770         }
 771         aboutVersionStringBuilder.append(webViewVersionTextView.getText());
 772         aboutVersionStringBuilder.append("\n");
 773         if (orbotTextView.getVisibility() == View.VISIBLE) {
 774             aboutVersionStringBuilder.append(orbotTextView.getText());
 775             aboutVersionStringBuilder.append("\n");
 776         }
 777         if (i2pTextView.getVisibility() == View.VISIBLE) {
 778             aboutVersionStringBuilder.append(i2pTextView.getText());
 779             aboutVersionStringBuilder.append("\n");
 780         }
 781         if (openKeychainTextView.getVisibility() == View.VISIBLE) {
 782             aboutVersionStringBuilder.append(openKeychainTextView.getText());
 783             aboutVersionStringBuilder.append("\n");
 784         }
 785         aboutVersionStringBuilder.append("\n");
 786         aboutVersionStringBuilder.append(memoryUsageTextView.getText());
 787         aboutVersionStringBuilder.append("\n");
 788         aboutVersionStringBuilder.append(appConsumedMemoryTextView.getText());
 789         aboutVersionStringBuilder.append("\n");
 790         aboutVersionStringBuilder.append(appAvailableMemoryTextView.getText());
 791         aboutVersionStringBuilder.append("\n");
 792         aboutVersionStringBuilder.append(appTotalMemoryTextView.getText());
 793         aboutVersionStringBuilder.append("\n");
 794         aboutVersionStringBuilder.append(appMaximumMemoryTextView.getText());
 795         aboutVersionStringBuilder.append("\n");
 796         aboutVersionStringBuilder.append(systemConsumedMemoryTextView.getText());
 797         aboutVersionStringBuilder.append("\n");
 798         aboutVersionStringBuilder.append(systemAvailableMemoryTextView.getText());
 799         aboutVersionStringBuilder.append("\n");
 800         aboutVersionStringBuilder.append(systemTotalMemoryTextView.getText());
 801         aboutVersionStringBuilder.append("\n\n");
 802         aboutVersionStringBuilder.append(blocklistsTextView.getText());
 803         aboutVersionStringBuilder.append("\n");
 804         aboutVersionStringBuilder.append(easyListTextView.getText());
 805         aboutVersionStringBuilder.append("\n");
 806         aboutVersionStringBuilder.append(easyPrivacyTextView.getText());
 807         aboutVersionStringBuilder.append("\n");
 808         aboutVersionStringBuilder.append(fanboyAnnoyanceTextView.getText());
 809         aboutVersionStringBuilder.append("\n");
 810         aboutVersionStringBuilder.append(fanboySocialTextView.getText());
 811         aboutVersionStringBuilder.append("\n");
 812         aboutVersionStringBuilder.append(ultraListTextView.getText());
 813         aboutVersionStringBuilder.append("\n");
 814         aboutVersionStringBuilder.append(ultraPrivacyTextView.getText());
 815         aboutVersionStringBuilder.append("\n\n");
 816         aboutVersionStringBuilder.append(packageSignatureTextView.getText());
 817         aboutVersionStringBuilder.append("\n");
 818         aboutVersionStringBuilder.append(certificateIssuerDnTextView.getText());
 819         aboutVersionStringBuilder.append("\n");
 820         aboutVersionStringBuilder.append(certificateSubjectDnTextView.getText());
 821         aboutVersionStringBuilder.append("\n");
 822         aboutVersionStringBuilder.append(certificateStartDateTextView.getText());
 823         aboutVersionStringBuilder.append("\n");
 824         aboutVersionStringBuilder.append(certificateEndDateTextView.getText());
 825         aboutVersionStringBuilder.append("\n");
 826         aboutVersionStringBuilder.append(certificateVersionTextView.getText());
 827         aboutVersionStringBuilder.append("\n");
 828         aboutVersionStringBuilder.append(certificateSerialNumberTextView.getText());
 829         aboutVersionStringBuilder.append("\n");
 830         aboutVersionStringBuilder.append(certificateSignatureAlgorithmTextView.getText());
 831
 832         // Return the string.
 833         return aboutVersionStringBuilder.toString();
 834     }
 835 }