Add Open With items to the context menus. https://redmine.stoutner.com/issues/374
[PrivacyBrowser.git] / app / src / main / java / com / stoutner / privacybrowser / activities / MainWebViewActivity.java
index 2b15aa4c2993177cead252bab7bf8d1c4a795714..a57831b7f14c8e4d0df81492c79099c63ca8964d 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Copyright © 2015-2018 Soren Stoutner <soren@stoutner.com>.
+ * Copyright © 2015-2019 Soren Stoutner <soren@stoutner.com>.
  *
  * Download cookie code contributed 2017 Hendrik Knackstedt.  Copyright assigned to Soren Stoutner <soren@stoutner.com>.
  *
@@ -47,6 +47,7 @@ import android.graphics.drawable.Drawable;
 import android.net.Uri;
 import android.net.http.SslCertificate;
 import android.net.http.SslError;
+import android.os.AsyncTask;
 import android.os.Build;
 import android.os.Bundle;
 import android.os.Environment;
@@ -95,6 +96,7 @@ import android.webkit.ValueCallback;
 import android.webkit.WebBackForwardList;
 import android.webkit.WebChromeClient;
 import android.webkit.WebResourceResponse;
+import android.webkit.WebSettings;
 import android.webkit.WebStorage;
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
@@ -122,7 +124,7 @@ import com.stoutner.privacybrowser.dialogs.DownloadLocationPermissionDialog;
 import com.stoutner.privacybrowser.dialogs.EditBookmarkDialog;
 import com.stoutner.privacybrowser.dialogs.EditBookmarkFolderDialog;
 import com.stoutner.privacybrowser.dialogs.HttpAuthenticationDialog;
-import com.stoutner.privacybrowser.dialogs.PinnedSslCertificateMismatchDialog;
+import com.stoutner.privacybrowser.dialogs.PinnedMismatchDialog;
 import com.stoutner.privacybrowser.dialogs.UrlHistoryDialog;
 import com.stoutner.privacybrowser.dialogs.ViewSslCertificateDialog;
 import com.stoutner.privacybrowser.helpers.AdHelper;
@@ -138,10 +140,13 @@ import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.IOException;
 import java.io.UnsupportedEncodingException;
+import java.lang.ref.WeakReference;
+import java.net.InetAddress;
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.net.URLDecoder;
 import java.net.URLEncoder;
+import java.net.UnknownHostException;
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.HashMap;
@@ -154,7 +159,7 @@ import java.util.Set;
 public class MainWebViewActivity extends AppCompatActivity implements CreateBookmarkDialog.CreateBookmarkListener, CreateBookmarkFolderDialog.CreateBookmarkFolderListener,
         CreateHomeScreenShortcutDialog.CreateHomeScreenShortcutListener, DownloadFileDialog.DownloadFileListener, DownloadImageDialog.DownloadImageListener,
         DownloadLocationPermissionDialog.DownloadLocationPermissionDialogListener, EditBookmarkDialog.EditBookmarkListener, EditBookmarkFolderDialog.EditBookmarkFolderListener,
-        HttpAuthenticationDialog.HttpAuthenticationListener, NavigationView.OnNavigationItemSelectedListener, PinnedSslCertificateMismatchDialog.PinnedSslCertificateMismatchListener,
+        HttpAuthenticationDialog.HttpAuthenticationListener, NavigationView.OnNavigationItemSelectedListener, PinnedMismatchDialog.PinnedMismatchListener,
         SslCertificateErrorDialog.SslCertificateErrorListener, UrlHistoryDialog.UrlHistoryListener {
 
     // `darkTheme` is public static so it can be accessed from everywhere.
@@ -168,14 +173,21 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     // `onCreateBookmark()`, `onCreateBookmarkFolder()`, `onCreateHomeScreenShortcutCreate()`, `onSaveEditBookmark()`, `onSaveEditBookmarkFolder()`, and `applyDomainSettings()`.
     public static Bitmap favoriteIconBitmap;
 
-    // `formattedUrlString` is public static so it can be accessed from `BookmarksActivity`, `CreateBookmarkDialog`, and `AddDomainDialog`.
+    // `favoriteIconDefaultBitmap` public static so it can be accessed from `PinnedMismatchDialog`.  It is also used in `onCreate()` and `applyDomainSettings`.
+    public static Bitmap favoriteIconDefaultBitmap;
+
+    // `formattedUrlString` is public static so it can be accessed from `AddDomainDialog`, `BookmarksActivity`, `DomainSettingsFragment`, `CreateBookmarkDialog`, and `PinnedMismatchDialog`.
     // It is also used in `onCreate()`, `onOptionsItemSelected()`, `onNavigationItemSelected()`, `onCreateHomeScreenShortcutCreate()`, `loadUrlFromTextBox()`, and `applyProxyThroughOrbot()`.
     public static String formattedUrlString;
 
-    // `sslCertificate` is public static so it can be accessed from `DomainsActivity`, `DomainsListFragment`, `DomainSettingsFragment`, `PinnedSslCertificateMismatchDialog`,
-    // and `ViewSslCertificateDialog`.  It is also used in `onCreate()`.
+    // `sslCertificate` is public static so it can be accessed from `DomainsActivity`, `DomainsListFragment`, `DomainSettingsFragment`, `PinnedMismatchDialog`, and `ViewSslCertificateDialog`.
+    // It is also used in `onCreate()`.
     public static SslCertificate sslCertificate;
 
+    // `currentHostIpAddresses` is public static so it can be accessed from `DomainSettingsFragment` and `ViewSslCertificateDialog`.
+    // It is also used in `onCreate()` and `GetHostIpAddresses()`.
+    public static String currentHostIpAddresses;
+
     // `orbotStatus` is public static so it can be accessed from `OrbotProxyHelper`.  It is also used in `onCreate()`, `onResume()`, and `applyProxyThroughOrbot()`.
     public static String orbotStatus;
 
@@ -256,18 +268,19 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     // `onSaveEditBookmark()`, `onSaveEditBookmarkFolder()`, and `loadBookmarksFolder()`.
     public static String currentBookmarksFolder;
 
-    // `domainSettingsDatabaseId` is public static so it can be accessed from `PinnedSslCertificateMismatchDialog`.  It is also used in `onCreate()`, `onOptionsItemSelected()`, and `applyDomainSettings()`.
+    // `domainSettingsDatabaseId` is public static so it can be accessed from `PinnedMismatchDialog`.  It is also used in `onCreate()`, `onOptionsItemSelected()`, and `applyDomainSettings()`.
     public static int domainSettingsDatabaseId;
 
-    // The pinned domain SSL Certificate variables are public static so they can be accessed from `PinnedSslCertificateMismatchDialog`.  They are also used in `onCreate()` and `applyDomainSettings()`.
-    public static String pinnedDomainSslIssuedToCNameString;
-    public static String pinnedDomainSslIssuedToONameString;
-    public static String pinnedDomainSslIssuedToUNameString;
-    public static String pinnedDomainSslIssuedByCNameString;
-    public static String pinnedDomainSslIssuedByONameString;
-    public static String pinnedDomainSslIssuedByUNameString;
-    public static Date pinnedDomainSslStartDate;
-    public static Date pinnedDomainSslEndDate;
+    // The pinned variables are public static so they can be accessed from `PinnedMismatchDialog`.  They are also used in `onCreate()` and `applyDomainSettings()`.
+    public static String pinnedSslIssuedToCName;
+    public static String pinnedSslIssuedToOName;
+    public static String pinnedSslIssuedToUName;
+    public static String pinnedSslIssuedByCName;
+    public static String pinnedSslIssuedByOName;
+    public static String pinnedSslIssuedByUName;
+    public static Date pinnedSslStartDate;
+    public static Date pinnedSslEndDate;
+    public static String pinnedHostIpAddresses;
 
     // The user agent constants are public static so they can be accessed from `SettingsFragment`, `DomainsActivity`, and `DomainSettingsFragment`.
     public final static int UNRECOGNIZED_USER_AGENT = -1;
@@ -284,9 +297,6 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     // `navigatingHistory` is used in `onCreate()`, `onNavigationItemSelected()`, `onSslMismatchBack()`, and `applyDomainSettings()`.
     private boolean navigatingHistory;
 
-    // `favoriteIconDefaultBitmap` is used in `onCreate()` and `applyDomainSettings`.
-    private Bitmap favoriteIconDefaultBitmap;
-
     // `drawerLayout` is used in `onCreate()`, `onNewIntent()`, `onBackPressed()`, and `onRestart()`.
     private DrawerLayout drawerLayout;
 
@@ -403,8 +413,14 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     // `currentDomainName` is used in `onCreate()`, `onOptionsItemSelected()`, `onNavigationItemSelected()`, `onAddDomain()`, and `applyDomainSettings()`.
     private String currentDomainName;
 
-    // `ignorePinnedSslCertificateForDomain` is used in `onCreate()`, `onSslMismatchProceed()`, and `applyDomainSettings()`.
-    private boolean ignorePinnedSslCertificate;
+    // `pinnedDomainSslCertificate` is used in `onCreate()` and `applyDomainSettings()`.
+    private boolean pinnedSslCertificate;
+
+    // `pinnedIpAddress` is used in `onCreate()` and `applyDomainSettings()`.
+    private boolean pinnedIpAddresses;
+
+    // `ignorePinnedDomainInformation` is used in `onCreate()`, `onSslMismatchProceed()`, and `applyDomainSettings()`.
+    private boolean ignorePinnedDomainInformation;
 
     // `orbotStatusBroadcastReceiver` is used in `onCreate()` and `onDestroy()`.
     private BroadcastReceiver orbotStatusBroadcastReceiver;
@@ -447,6 +463,11 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     private ForegroundColorSpan initialGrayColorSpan;
     private ForegroundColorSpan finalGrayColorSpan;
 
+    // The drawer header padding variables are used in `onCreate()` and `onConfigurationChanged()`.
+    private int drawerHeaderPaddingLeftAndRight;
+    private int drawerHeaderPaddingTop;
+    private int drawerHeaderPaddingBottom;
+
     // `sslErrorHandler` is used in `onCreate()`, `onSslErrorCancel()`, and `onSslErrorProceed`.
     private SslErrorHandler sslErrorHandler;
 
@@ -462,9 +483,6 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     // `urlIsLoading` is used in `onCreate()`, `onCreateOptionsMenu()`, `loadUrl()`, and `applyDomainSettings()`.
     private boolean urlIsLoading;
 
-    // `pinnedDomainSslCertificate` is used in `onCreate()` and `applyDomainSettings()`.
-    private boolean pinnedDomainSslCertificate;
-
     // `bookmarksDatabaseHelper` is used in `onCreate()`, `onDestroy`, `onOptionsItemSelected()`, `onCreateBookmark()`, `onCreateBookmarkFolder()`, `onSaveEditBookmark()`, `onSaveEditBookmarkFolder()`,
     // and `loadBookmarksFolder()`.
     private BookmarksDatabaseHelper bookmarksDatabaseHelper;
@@ -764,7 +782,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         // Update `findOnPageCountTextView`.
         mainWebView.setFindListener(new WebView.FindListener() {
             // Get a handle for `findOnPageCountTextView`.
-            final TextView findOnPageCountTextView = (TextView) findViewById(R.id.find_on_page_count_textview);
+            final TextView findOnPageCountTextView = findViewById(R.id.find_on_page_count_textview);
 
             @Override
             public void onFindResultReceived(int activeMatchOrdinal, int numberOfMatches, boolean isDoneCounting) {
@@ -858,7 +876,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             int databaseID = (int) id;
 
             // Get the bookmark cursor for this ID and move it to the first row.
-            Cursor bookmarkCursor = bookmarksDatabaseHelper.getBookmarkCursor(databaseID);
+            Cursor bookmarkCursor = bookmarksDatabaseHelper.getBookmark(databaseID);
             bookmarkCursor.moveToFirst();
 
             // Act upon the bookmark according to the type.
@@ -912,11 +930,11 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         float screenDensity = resources.getDisplayMetrics().density;
 
         // Calculate the drawer header padding.  This is used to move the text in the drawer headers below any cutouts.
-        int drawerHeaderPaddingLeftAndRight = (int) (15 * screenDensity);
-        int drawerHeaderPaddingTop = statusBarPixelSize + (int) (4 * screenDensity);
-        int drawerHeaderPaddingBottom = (int) (8 * screenDensity);
+        drawerHeaderPaddingLeftAndRight = (int) (15 * screenDensity);
+        drawerHeaderPaddingTop = statusBarPixelSize + (int) (4 * screenDensity);
+        drawerHeaderPaddingBottom = (int) (8 * screenDensity);
 
-        // The drawer listener is used to update the navigation menu.
+        // The drawer listener is used to update the navigation menu.`
         drawerLayout.addDrawerListener(new DrawerLayout.DrawerListener() {
             @Override
             public void onDrawerSlide(@NonNull View drawerView, float slideOffset) {
@@ -977,17 +995,17 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 if (nightMode) {
                     // `background-color: #212121` sets the background to be dark gray.  `color: #BDBDBD` sets the text color to be light gray.  `box-shadow: none` removes a lower underline on links
                     // used by WordPress.  `text-decoration: none` removes all text underlines.  `text-shadow: none` removes text shadows, which usually have a hard coded color.
-                    // `border: none` removes all borders, which can also be used to underline text.
-                    // `a {color: #1565C0}` sets links to be a dark blue.  `!important` takes precedent over any existing sub-settings.
+                    // `border: none` removes all borders, which can also be used to underline text.  `a {color: #1565C0}` sets links to be a dark blue.
+                    // `::selection {background: #0D47A1}' sets the text selection highlight color to be a dark blue. `!important` takes precedent over any existing sub-settings.
                     mainWebView.evaluateJavascript("(function() {var parent = document.getElementsByTagName('head').item(0); var style = document.createElement('style'); style.type = 'text/css'; " +
                             "style.innerHTML = '* {background-color: #212121 !important; color: #BDBDBD !important; box-shadow: none !important; text-decoration: none !important;" +
-                            "text-shadow: none !important; border: none !important;} a {color: #1565C0 !important;}'; parent.appendChild(style)})()", value -> {
+                            "text-shadow: none !important; border: none !important;} a {color: #1565C0 !important;} ::selection {background: #0D47A1 !important;}'; parent.appendChild(style)})()", value -> {
                                 // Initialize a handler to display `mainWebView`.
                                 Handler displayWebViewHandler = new Handler();
 
                                 // Setup a runnable to display `mainWebView` after a delay to allow the CSS to be applied.
                                 Runnable displayWebViewRunnable = () -> {
-                                    // Only display `mainWebView` if the progress bar is one.  This prevents the display of the `WebView` while it is still loading.
+                                    // Only display `mainWebView` if the progress bar is gone.  This prevents the display of the `WebView` while it is still loading.
                                     if (progressBar.getVisibility() == View.GONE) {
                                         mainWebView.setVisibility(View.VISIBLE);
                                     }
@@ -1216,10 +1234,15 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         // Hide zoom controls.
         mainWebView.getSettings().setDisplayZoomControls(false);
 
-        // Set `mainWebView` to use a wide viewport.  Otherwise, some web pages will be scrunched and some content will render outside the screen.
+        // Don't allow mixed content (HTTP and HTTPS) on the same website.
+        if (Build.VERSION.SDK_INT >= 21) {
+            mainWebView.getSettings().setMixedContentMode(WebSettings.MIXED_CONTENT_NEVER_ALLOW);
+        }
+
+        // Set the WebView to use a wide viewport.  Otherwise, some web pages will be scrunched and some content will render outside the screen.
         mainWebView.getSettings().setUseWideViewPort(true);
 
-        // Set `mainWebView` to load in overview mode (zoomed out to the maximum width).
+        // Set the WebView to load in overview mode (zoomed out to the maximum width).
         mainWebView.getSettings().setLoadWithOverviewMode(true);
 
         // Explicitly disable geolocation.
@@ -1584,6 +1607,9 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             // Update the URL in urlTextBox when the page starts to load.
             @Override
             public void onPageStarted(WebView view, String url, Bitmap favicon) {
+                // Reset the list of host IP addresses.
+                currentHostIpAddresses = "";
+
                 // Reset the list of resource requests.
                 resourceRequests.clear();
 
@@ -1606,7 +1632,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
 
                 // Check to see if Privacy Browser is waiting on Orbot.
                 if (!waitingForOrbot) {  // We are not waiting on Orbot, so we need to process the URL.
-                    // We need to update `formattedUrlString` at the beginning of the load, so that if the user toggles JavaScript during the load the new website is reloaded.
+                    // The formatted URL string must be updated at the beginning of the load, so that if the user toggles JavaScript during the load the new website is reloaded.
                     formattedUrlString = url;
 
                     // Display the formatted URL text.
@@ -1615,6 +1641,12 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     // Apply text highlighting to `urlTextBox`.
                     highlightUrlText();
 
+                    // Get a URI for the current URL.
+                    Uri currentUri = Uri.parse(formattedUrlString);
+
+                    // Get the IP addresses for the host.
+                    new GetHostIpAddresses(activity).execute(currentUri.getHost());
+
                     // Apply any custom domain settings if the URL was loaded by navigating history.
                     if (navigatingHistory) {
                         // Apply the domain settings.
@@ -1702,7 +1734,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     }
                 }
 
-                // Update `urlTextBox` and apply domain settings if not waiting on Orbot.
+                // Update the URL text box and apply domain settings if not waiting on Orbot.
                 if (!waitingForOrbot) {
                     // Check to see if `WebView` has set `url` to be `about:blank`.
                     if (url.equals("about:blank")) {  // `WebView` is blank, so `formattedUrlString` should be `""` and `urlTextBox` should display a hint.
@@ -1720,10 +1752,10 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                         // Apply the domain settings.  This clears any settings from the previous domain.
                         applyDomainSettings(formattedUrlString, true, false);
                     } else {  // `WebView` has loaded a webpage.
-                        // Set `formattedUrlString`.
-                        formattedUrlString = url;
+                        // Set the formatted URL string.  Getting the URL from the WebView instead of using the one provided by `onPageFinished` makes websites like YouTube function correctly.
+                        formattedUrlString = mainWebView.getUrl();
 
-                        // Only update `urlTextBox` if the user is not typing in it.
+                        // Only update the URL text box if the user is not typing in it.
                         if (!urlTextBox.hasFocus()) {
                             // Display the formatted URL text.
                             urlTextBox.setText(formattedUrlString);
@@ -1733,12 +1765,11 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                         }
                     }
 
-                    // Store the SSL certificate so it can be accessed from `ViewSslCertificateDialog` and `PinnedSslCertificateMismatchDialog`.
+                    // Store the SSL certificate so it can be accessed from `ViewSslCertificateDialog` and `PinnedMismatchDialog`.
                     sslCertificate = mainWebView.getCertificate();
 
-                    // Check the current website SSL certificate against the pinned SSL certificate if there is a pinned SSL certificate the user has not chosen to ignore it for this session.
-                    // Also ignore if changes in the user agent causes an error while navigating history.
-                    if (pinnedDomainSslCertificate && !ignorePinnedSslCertificate && navigatingHistory) {
+                    // Check the current website information against any pinned domain information.
+                    if ((pinnedSslCertificate || pinnedIpAddresses) && !ignorePinnedDomainInformation) {
                         // Initialize the current SSL certificate variables.
                         String currentWebsiteIssuedToCName = "";
                         String currentWebsiteIssuedToOName = "";
@@ -1762,11 +1793,11 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                             currentWebsiteSslEndDate = sslCertificate.getValidNotAfterDate();
                         }
 
-                        // Initialize `String` variables to store the SSL certificate dates.  `Strings` are needed to compare the values below, which doesn't work with `Dates` if they are `null`.
+                        // Initialize string variables to store the SSL certificate dates.  Strings are needed to compare the values below, which doesn't work with `Dates` if they are `null`.
                         String currentWebsiteSslStartDateString = "";
                         String currentWebsiteSslEndDateString = "";
-                        String pinnedDomainSslStartDateString = "";
-                        String pinnedDomainSslEndDateString = "";
+                        String pinnedSslStartDateString = "";
+                        String pinnedSslEndDateString = "";
 
                         // Convert the `Dates` to `Strings` if they are not `null`.
                         if (currentWebsiteSslStartDate != null) {
@@ -1777,23 +1808,26 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                             currentWebsiteSslEndDateString = currentWebsiteSslEndDate.toString();
                         }
 
-                        if (pinnedDomainSslStartDate != null) {
-                            pinnedDomainSslStartDateString = pinnedDomainSslStartDate.toString();
+                        if (pinnedSslStartDate != null) {
+                            pinnedSslStartDateString = pinnedSslStartDate.toString();
                         }
 
-                        if (pinnedDomainSslEndDate != null) {
-                            pinnedDomainSslEndDateString = pinnedDomainSslEndDate.toString();
+                        if (pinnedSslEndDate != null) {
+                            pinnedSslEndDateString = pinnedSslEndDate.toString();
                         }
 
-                        // Check to see if the pinned SSL certificate matches the current website certificate.
-                        if (!currentWebsiteIssuedToCName.equals(pinnedDomainSslIssuedToCNameString) || !currentWebsiteIssuedToOName.equals(pinnedDomainSslIssuedToONameString) ||
-                                !currentWebsiteIssuedToUName.equals(pinnedDomainSslIssuedToUNameString) || !currentWebsiteIssuedByCName.equals(pinnedDomainSslIssuedByCNameString) ||
-                                !currentWebsiteIssuedByOName.equals(pinnedDomainSslIssuedByONameString) || !currentWebsiteIssuedByUName.equals(pinnedDomainSslIssuedByUNameString) ||
-                                !currentWebsiteSslStartDateString.equals(pinnedDomainSslStartDateString) || !currentWebsiteSslEndDateString.equals(pinnedDomainSslEndDateString)) {
-                            // The pinned SSL certificate doesn't match the current domain certificate.
-                            //Display the pinned SSL certificate mismatch `AlertDialog`.
-                            AppCompatDialogFragment pinnedSslCertificateMismatchDialogFragment = new PinnedSslCertificateMismatchDialog();
-                            pinnedSslCertificateMismatchDialogFragment.show(getSupportFragmentManager(), getString(R.string.ssl_certificate_mismatch));
+                        // Check to see if the pinned information matches the current information.
+                        if ((pinnedIpAddresses && !currentHostIpAddresses.equals(pinnedHostIpAddresses)) || (pinnedSslCertificate && (!currentWebsiteIssuedToCName.equals(pinnedSslIssuedToCName) ||
+                                !currentWebsiteIssuedToOName.equals(pinnedSslIssuedToOName) || !currentWebsiteIssuedToUName.equals(pinnedSslIssuedToUName) ||
+                                !currentWebsiteIssuedByCName.equals(pinnedSslIssuedByCName) || !currentWebsiteIssuedByOName.equals(pinnedSslIssuedByOName) ||
+                                !currentWebsiteIssuedByUName.equals(pinnedSslIssuedByUName) || !currentWebsiteSslStartDateString.equals(pinnedSslStartDateString) ||
+                                !currentWebsiteSslEndDateString.equals(pinnedSslEndDateString)))) {
+
+                            // Get a handle for the pinned mismatch alert dialog.
+                            AppCompatDialogFragment pinnedMismatchDialogFragment = PinnedMismatchDialog.displayDialog(pinnedSslCertificate, pinnedIpAddresses);
+
+                            // Show the pinned mismatch alert dialog.
+                            pinnedMismatchDialogFragment.show(getSupportFragmentManager(), getString(R.string.pinned_mismatch));
                         }
                     }
                 }
@@ -1816,13 +1850,13 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 Date currentWebsiteSslEndDate = currentWebsiteSslCertificate.getValidNotAfterDate();
 
                 // Proceed to the website if the current SSL website certificate matches the pinned domain certificate.
-                if (pinnedDomainSslCertificate &&
-                        currentWebsiteIssuedToCName.equals(pinnedDomainSslIssuedToCNameString) && currentWebsiteIssuedToOName.equals(pinnedDomainSslIssuedToONameString) &&
-                        currentWebsiteIssuedToUName.equals(pinnedDomainSslIssuedToUNameString) && currentWebsiteIssuedByCName.equals(pinnedDomainSslIssuedByCNameString) &&
-                        currentWebsiteIssuedByOName.equals(pinnedDomainSslIssuedByONameString) && currentWebsiteIssuedByUName.equals(pinnedDomainSslIssuedByUNameString) &&
-                        currentWebsiteSslStartDate.equals(pinnedDomainSslStartDate) && currentWebsiteSslEndDate.equals(pinnedDomainSslEndDate)) {
-                    // An SSL certificate is pinned and matches the current domain certificate.
-                    // Proceed to the website without displaying an error.
+                if (pinnedSslCertificate &&
+                        currentWebsiteIssuedToCName.equals(pinnedSslIssuedToCName) && currentWebsiteIssuedToOName.equals(pinnedSslIssuedToOName) &&
+                        currentWebsiteIssuedToUName.equals(pinnedSslIssuedToUName) && currentWebsiteIssuedByCName.equals(pinnedSslIssuedByCName) &&
+                        currentWebsiteIssuedByOName.equals(pinnedSslIssuedByOName) && currentWebsiteIssuedByUName.equals(pinnedSslIssuedByUName) &&
+                        currentWebsiteSslStartDate.equals(pinnedSslStartDate) && currentWebsiteSslEndDate.equals(pinnedSslEndDate)) {
+
+                    // An SSL certificate is pinned and matches the current domain certificate.  Proceed to the website without displaying an error.
                     handler.proceed();
                 } else {  // Either there isn't a pinned SSL certificate or it doesn't match the current website certificate.
                     // Store `handler` so it can be accesses from `onSslErrorCancel()` and `onSslErrorProceed()`.
@@ -2838,18 +2872,22 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 mainWebView.reload();
                 return true;
 
-            case R.id.print:
-                // Get a `PrintManager` instance.
-                PrintManager printManager = (PrintManager) getSystemService(Context.PRINT_SERVICE);
+            case R.id.find_on_page:
+                // Hide the URL app bar.
+                supportAppBar.setVisibility(View.GONE);
 
-                // Convert `mainWebView` to `printDocumentAdapter`.
-                PrintDocumentAdapter printDocumentAdapter = mainWebView.createPrintDocumentAdapter();
+                // Show the Find on Page `RelativeLayout`.
+                findOnPageLinearLayout.setVisibility(View.VISIBLE);
 
-                // Remove the lint error below that `printManager` might be `null`.
-                assert printManager != null;
+                // Display the keyboard.  We have to wait 200 ms before running the command to work around a bug in Android.
+                // http://stackoverflow.com/questions/5520085/android-show-softkeyboard-with-showsoftinput-is-not-working
+                findOnPageEditText.postDelayed(() -> {
+                    // Set the focus on `findOnPageEditText`.
+                    findOnPageEditText.requestFocus();
 
-                // Print the document.  The print attributes are `null`.
-                printManager.print(getString(R.string.privacy_browser_web_page), printDocumentAdapter, null);
+                    // Display the keyboard.  `0` sets no input flags.
+                    inputMethodManager.showSoftInput(findOnPageEditText, 0);
+                }, 200);
                 return true;
 
             case R.id.view_source:
@@ -2858,15 +2896,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 startActivity(viewSourceIntent);
                 return true;
 
-            case R.id.proxy_through_orbot:
-                // Toggle the proxy through Orbot variable.
-                proxyThroughOrbot = !proxyThroughOrbot;
-
-                // Apply the proxy through Orbot settings.
-                applyProxyThroughOrbot(true);
-                return true;
-
-            case R.id.share:
+            case R.id.share_url:
                 // Setup the share string.
                 String shareString = webViewTitle + " – " + urlTextBox.getText().toString();
 
@@ -2876,33 +2906,45 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 shareIntent.setType("text/plain");
 
                 // Make it so.
-                startActivity(Intent.createChooser(shareIntent, "Share URL"));
+                startActivity(Intent.createChooser(shareIntent, getString(R.string.share_url)));
                 return true;
 
-            case R.id.find_on_page:
-                // Hide the URL app bar.
-                supportAppBar.setVisibility(View.GONE);
+            case R.id.print:
+                // Get a `PrintManager` instance.
+                PrintManager printManager = (PrintManager) getSystemService(Context.PRINT_SERVICE);
 
-                // Show the Find on Page `RelativeLayout`.
-                findOnPageLinearLayout.setVisibility(View.VISIBLE);
+                // Convert `mainWebView` to `printDocumentAdapter`.
+                PrintDocumentAdapter printDocumentAdapter = mainWebView.createPrintDocumentAdapter();
 
-                // Display the keyboard.  We have to wait 200 ms before running the command to work around a bug in Android.
-                // http://stackoverflow.com/questions/5520085/android-show-softkeyboard-with-showsoftinput-is-not-working
-                findOnPageEditText.postDelayed(() -> {
-                    // Set the focus on `findOnPageEditText`.
-                    findOnPageEditText.requestFocus();
+                // Remove the lint error below that `printManager` might be `null`.
+                assert printManager != null;
 
-                    // Display the keyboard.  `0` sets no input flags.
-                    inputMethodManager.showSoftInput(findOnPageEditText, 0);
-                }, 200);
+                // Print the document.  The print attributes are `null`.
+                printManager.print(getString(R.string.privacy_browser_web_page), printDocumentAdapter, null);
+                return true;
+
+            case R.id.open_with_app:
+                openWithApp(formattedUrlString);
+                return true;
+
+            case R.id.open_with_browser:
+                openWithBrowser(formattedUrlString);
                 return true;
 
             case R.id.add_to_homescreen:
-                // Show the `CreateHomeScreenShortcutDialog` `AlertDialog` and name this instance `R.string.create_shortcut`.
+                // Show the alert dialog.
                 AppCompatDialogFragment createHomeScreenShortcutDialogFragment = new CreateHomeScreenShortcutDialog();
                 createHomeScreenShortcutDialogFragment.show(getSupportFragmentManager(), getString(R.string.create_shortcut));
 
-                //Everything else will be handled by `CreateHomeScreenShortcutDialog` and the associated listener below.
+                //Everything else will be handled by the alert dialog and the associated listener below.
+                return true;
+
+            case R.id.proxy_through_orbot:
+                // Toggle the proxy through Orbot variable.
+                proxyThroughOrbot = !proxyThroughOrbot;
+
+                // Apply the proxy through Orbot settings.
+                applyProxyThroughOrbot(true);
                 return true;
 
             case R.id.refresh:
@@ -3170,7 +3212,19 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     public void onConfigurationChanged(Configuration newConfig) {
         super.onConfigurationChanged(newConfig);
 
-        // Reload the ad for the free flavor if we not in full screen mode.
+        // Get the status bar pixel size.
+        int statusBarResourceId = getResources().getIdentifier("status_bar_height", "dimen", "android");
+        int statusBarPixelSize = getResources().getDimensionPixelSize(statusBarResourceId);
+
+        // Get the resource density.
+        float screenDensity = getResources().getDisplayMetrics().density;
+
+        // Recalculate the drawer header padding.
+        drawerHeaderPaddingLeftAndRight = (int) (15 * screenDensity);
+        drawerHeaderPaddingTop = statusBarPixelSize + (int) (4 * screenDensity);
+        drawerHeaderPaddingBottom = (int) (8 * screenDensity);
+
+        // Reload the ad for the free flavor if not in full screen mode.
         if (BuildConfig.FLAVOR.contentEquals("free") && !inFullScreenBrowsingMode) {
             // Reload the ad.  The AdView is destroyed and recreated, which changes the ID, every time it is reloaded to handle possible rotations.
             AdHelper.loadAd(findViewById(R.id.adview), getApplicationContext(), getString(R.string.ad_unit_id));
@@ -3256,7 +3310,19 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     return false;
                 });
 
-                // Add a `Cancel` entry, which by default closes the `ContextMenu`.
+                // Add an Open with App entry.
+                menu.add(R.string.open_with_app).setOnMenuItemClickListener((MenuItem item) -> {
+                    openWithApp(linkUrl);
+                    return false;
+                });
+
+                // Add an Open with Browser entry.
+                menu.add(R.string.open_with_browser).setOnMenuItemClickListener((MenuItem item) -> {
+                    openWithBrowser(linkUrl);
+                    return false;
+                });
+
+                // Add a Cancel entry, which by default closes the context menu.
                 menu.add(R.string.cancel);
                 break;
 
@@ -3267,7 +3333,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 // Set the target URL as the title of the `ContextMenu`.
                 menu.setHeaderTitle(linkUrl);
 
-                // Add a `Write Email` entry.
+                // Add a Write Email entry.
                 menu.add(R.string.write_email).setOnMenuItemClickListener(item -> {
                     // Use `ACTION_SENDTO` instead of `ACTION_SEND` so that only email programs are launched.
                     Intent emailIntent = new Intent(Intent.ACTION_SENDTO);
@@ -3283,7 +3349,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     return false;
                 });
 
-                // Add a `Copy Email Address` entry.
+                // Add a Copy Email Address entry.
                 menu.add(R.string.copy_email_address).setOnMenuItemClickListener(item -> {
                     // Save the email address in a `ClipData`.
                     ClipData srcEmailTypeClipData = ClipData.newPlainText(getString(R.string.email_address), linkUrl);
@@ -3305,13 +3371,13 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 // Set the image URL as the title of the `ContextMenu`.
                 menu.setHeaderTitle(imageUrl);
 
-                // Add a `View Image` entry.
+                // Add a View Image entry.
                 menu.add(R.string.view_image).setOnMenuItemClickListener(item -> {
                     loadUrl(imageUrl);
                     return false;
                 });
 
-                // Add a `Download Image` entry.
+                // Add a Download Image entry.
                 menu.add(R.string.download_image).setOnMenuItemClickListener((MenuItem item) -> {
                     // Check if the download should be processed by an external app.
                     if (downloadWithExternalApp) {  // Download with an external app.
@@ -3344,7 +3410,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     return false;
                 });
 
-                // Add a `Copy URL` entry.
+                // Add a Copy URL entry.
                 menu.add(R.string.copy_url).setOnMenuItemClickListener(item -> {
                     // Save the image URL in a `ClipData`.
                     ClipData srcImageTypeClipData = ClipData.newPlainText(getString(R.string.url), imageUrl);
@@ -3354,6 +3420,18 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     return false;
                 });
 
+                // Add an Open with App entry.
+                menu.add(R.string.open_with_app).setOnMenuItemClickListener((MenuItem item) -> {
+                    openWithApp(imageUrl);
+                    return false;
+                });
+
+                // Add an Open with Browser entry.
+                menu.add(R.string.open_with_browser).setOnMenuItemClickListener((MenuItem item) -> {
+                    openWithBrowser(imageUrl);
+                    return false;
+                });
+
                 // Add a `Cancel` entry, which by default closes the `ContextMenu`.
                 menu.add(R.string.cancel);
                 break;
@@ -3416,6 +3494,18 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     return false;
                 });
 
+                // Add an Open with App entry.
+                menu.add(R.string.open_with_app).setOnMenuItemClickListener((MenuItem item) -> {
+                    openWithApp(imageUrl);
+                    return false;
+                });
+
+                // Add an Open with Browser entry.
+                menu.add(R.string.open_with_browser).setOnMenuItemClickListener((MenuItem item) -> {
+                    openWithBrowser(imageUrl);
+                    return false;
+                });
+
                 // Add a `Cancel` entry, which by default closes the `ContextMenu`.
                 menu.add(R.string.cancel);
                 break;
@@ -3443,8 +3533,8 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         // Create the bookmark.
         bookmarksDatabaseHelper.createBookmark(bookmarkNameString, bookmarkUrlString, currentBookmarksFolder, newBookmarkDisplayOrder, favoriteIconByteArray);
 
-        // Update `bookmarksCursor` with the current contents of this folder.
-        bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarksCursorByDisplayOrder(currentBookmarksFolder);
+        // Update the bookmarks cursor with the current contents of this folder.
+        bookmarksCursor = bookmarksDatabaseHelper.getBookmarksByDisplayOrder(currentBookmarksFolder);
 
         // Update the `ListView`.
         bookmarksCursorAdapter.changeCursor(bookmarksCursor);
@@ -3488,8 +3578,8 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         // Create the folder, which will be placed at the top of the `ListView`.
         bookmarksDatabaseHelper.createFolder(folderNameString, currentBookmarksFolder, folderIconByteArray);
 
-        // Update `bookmarksCursor` with the current contents of this folder.
-        bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarksCursorByDisplayOrder(currentBookmarksFolder);
+        // Update the bookmarks cursor with the current contents of this folder.
+        bookmarksCursor = bookmarksDatabaseHelper.getBookmarksByDisplayOrder(currentBookmarksFolder);
 
         // Update the `ListView`.
         bookmarksCursorAdapter.changeCursor(bookmarksCursor);
@@ -3703,8 +3793,8 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             bookmarksDatabaseHelper.updateBookmark(selectedBookmarkDatabaseId, bookmarkNameString, bookmarkUrlString, newFavoriteIconByteArray);
         }
 
-        // Update `bookmarksCursor` with the current contents of this folder.
-        bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarksCursorByDisplayOrder(currentBookmarksFolder);
+        // Update the bookmarks cursor with the current contents of this folder.
+        bookmarksCursor = bookmarksDatabaseHelper.getBookmarksByDisplayOrder(currentBookmarksFolder);
 
         // Update the `ListView`.
         bookmarksCursorAdapter.changeCursor(bookmarksCursor);
@@ -3765,8 +3855,8 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             bookmarksDatabaseHelper.updateFolder(selectedFolderDatabaseId, oldFolderNameString, newFolderNameString, folderIconByteArray);
         }
 
-        // Update `bookmarksCursor` with the current contents of this folder.
-        bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarksCursorByDisplayOrder(currentBookmarksFolder);
+        // Update the bookmarks cursor with the current contents of this folder.
+        bookmarksCursor = bookmarksDatabaseHelper.getBookmarksByDisplayOrder(currentBookmarksFolder);
 
         // Update the `ListView`.
         bookmarksCursorAdapter.changeCursor(bookmarksCursor);
@@ -3805,7 +3895,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     }
 
     @Override
-    public void onSslMismatchBack() {
+    public void onPinnedMismatchBack() {
         if (mainWebView.canGoBack()) {  // There is a back page in the history.
             // Reset the formatted URL string so the page will load correctly if blocking of third-party requests is enabled.
             formattedUrlString = "";
@@ -3822,9 +3912,9 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     }
 
     @Override
-    public void onSslMismatchProceed() {
-        // Do not check the pinned SSL certificate for this domain again until the domain changes.
-        ignorePinnedSslCertificate = true;
+    public void onPinnedMismatchProceed() {
+        // Do not check the pinned information for this domain again until the domain changes.
+        ignorePinnedDomainInformation = true;
     }
 
     @Override
@@ -3857,7 +3947,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 drawerLayout.closeDrawer(GravityCompat.END);
             } else {  // A subfolder is displayed.
                 // Place the former parent folder in `currentFolder`.
-                currentBookmarksFolder = bookmarksDatabaseHelper.getParentFolder(currentBookmarksFolder);
+                currentBookmarksFolder = bookmarksDatabaseHelper.getParentFolderName(currentBookmarksFolder);
 
                 // Load the new folder.
                 loadBookmarksFolder();
@@ -4119,8 +4209,8 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             // Set the new `hostname` as the `currentDomainName`.
             currentDomainName = hostName;
 
-            // Reset `ignorePinnedSslCertificate`.
-            ignorePinnedSslCertificate = false;
+            // Reset the ignoring of pinned domain information.
+            ignorePinnedDomainInformation = false;
 
             // Reset the favorite icon if specified.
             if (resetFavoriteIcon) {
@@ -4212,13 +4302,15 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 int swipeToRefreshInt = currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SWIPE_TO_REFRESH));
                 int nightModeInt = currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.NIGHT_MODE));
                 int displayWebpageImagesInt = currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.DISPLAY_IMAGES));
-                pinnedDomainSslCertificate = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE)) == 1);
-                pinnedDomainSslIssuedToCNameString = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME));
-                pinnedDomainSslIssuedToONameString = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION));
-                pinnedDomainSslIssuedToUNameString = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT));
-                pinnedDomainSslIssuedByCNameString = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME));
-                pinnedDomainSslIssuedByONameString = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION));
-                pinnedDomainSslIssuedByUNameString = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT));
+                pinnedSslCertificate = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE)) == 1);
+                pinnedSslIssuedToCName = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME));
+                pinnedSslIssuedToOName = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION));
+                pinnedSslIssuedToUName = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT));
+                pinnedSslIssuedByCName = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME));
+                pinnedSslIssuedByOName = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION));
+                pinnedSslIssuedByUName = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT));
+                pinnedIpAddresses = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_IP_ADDRESSES)) == 1);
+                pinnedHostIpAddresses = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.IP_ADDRESSES));
 
                 // Set `nightMode` according to `nightModeInt`.  If `nightModeInt` is `DomainsDatabaseHelper.NIGHT_MODE_SYSTEM_DEFAULT` the current setting from `sharedPreferences` will be used.
                 switch (nightModeInt) {
@@ -4241,16 +4333,16 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
 
                 // Set the pinned SSL certificate start date to `null` if the saved date `long` is 0.
                 if (currentHostDomainSettingsCursor.getLong(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_START_DATE)) == 0) {
-                    pinnedDomainSslStartDate = null;
+                    pinnedSslStartDate = null;
                 } else {
-                    pinnedDomainSslStartDate = new Date(currentHostDomainSettingsCursor.getLong(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_START_DATE)));
+                    pinnedSslStartDate = new Date(currentHostDomainSettingsCursor.getLong(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_START_DATE)));
                 }
 
                 // Set the pinned SSL certificate end date to `null` if the saved date `long` is 0.
                 if (currentHostDomainSettingsCursor.getLong(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_END_DATE)) == 0) {
-                    pinnedDomainSslEndDate = null;
+                    pinnedSslEndDate = null;
                 } else {
-                    pinnedDomainSslEndDate = new Date(currentHostDomainSettingsCursor.getLong(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_END_DATE)));
+                    pinnedSslEndDate = new Date(currentHostDomainSettingsCursor.getLong(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_END_DATE)));
                 }
 
                 // Close `currentHostDomainSettingsCursor`.
@@ -4403,17 +4495,19 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     mainWebView.getSettings().setSaveFormData(saveFormDataEnabled);
                 }
 
-                // Reset the pinned SSL certificate information.
+                // Reset the pinned variables.
                 domainSettingsDatabaseId = -1;
-                pinnedDomainSslCertificate = false;
-                pinnedDomainSslIssuedToCNameString = "";
-                pinnedDomainSslIssuedToONameString = "";
-                pinnedDomainSslIssuedToUNameString = "";
-                pinnedDomainSslIssuedByCNameString = "";
-                pinnedDomainSslIssuedByONameString = "";
-                pinnedDomainSslIssuedByUNameString = "";
-                pinnedDomainSslStartDate = null;
-                pinnedDomainSslEndDate = null;
+                pinnedSslCertificate = false;
+                pinnedSslIssuedToCName = "";
+                pinnedSslIssuedToOName = "";
+                pinnedSslIssuedToUName = "";
+                pinnedSslIssuedByCName = "";
+                pinnedSslIssuedByOName = "";
+                pinnedSslIssuedByUName = "";
+                pinnedSslStartDate = null;
+                pinnedSslEndDate = null;
+                pinnedIpAddresses = false;
+                pinnedHostIpAddresses = "";
 
                 // Set third-party cookies status if API >= 21.
                 if (Build.VERSION.SDK_INT >= 21) {
@@ -4458,7 +4552,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 // Set the loading of webpage images.
                 mainWebView.getSettings().setLoadsImagesAutomatically(displayWebpageImages);
 
-                // Set a transparent background on `urlTextBox`.  We have to use the deprecated `.getDrawable()` until the minimum API >= 21.
+                // Set a transparent background on `urlTextBox`.  The deprecated `.getDrawable()` must be used until the minimum API >= 21.
                 urlAppBarRelativeLayout.setBackgroundDrawable(getResources().getDrawable(R.color.transparent));
             }
 
@@ -4630,7 +4724,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         // Create a download intent.  Not specifying the action type will display the maximum number of options.
         Intent downloadIntent = new Intent();
 
-        // Set the URI and the mime type.  `"*/*"` will display the maximum number of options.
+        // Set the URI and the MIME type.  Specifying `text/html` displays a good number of options.
         downloadIntent.setDataAndType(Uri.parse(url), "text/html");
 
         // Flag the intent to open in a new task.
@@ -4641,66 +4735,69 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     }
 
     private void highlightUrlText() {
-        // Get the URL string.
-        String urlString = urlTextBox.getText().toString();
-
-        // Highlight the URL according to the protocol.
-        if (urlString.startsWith("file://")) {  // This is a file URL.
-            // De-emphasize only the protocol.
-            urlTextBox.getText().setSpan(initialGrayColorSpan, 0, 7, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
-        } else if (urlString.startsWith("content://")) {
-            // De-emphasize only the protocol.
-            urlTextBox.getText().setSpan(initialGrayColorSpan, 0, 10, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
-        } else {  // This is a web URL.
-            // Get the index of the `/` immediately after the domain name.
-            int endOfDomainName = urlString.indexOf("/", (urlString.indexOf("//") + 2));
-
-            // Create a base URL string.
-            String baseUrl;
-
-            // Get the base URL.
-            if (endOfDomainName > 0) {  // There is at least one character after the base URL.
+        // Only highlight the URL text if the box is not currently selected.
+        if (!urlTextBox.hasFocus()) {
+            // Get the URL string.
+            String urlString = urlTextBox.getText().toString();
+
+            // Highlight the URL according to the protocol.
+            if (urlString.startsWith("file://")) {  // This is a file URL.
+                // De-emphasize only the protocol.
+                urlTextBox.getText().setSpan(initialGrayColorSpan, 0, 7, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+            } else if (urlString.startsWith("content://")) {
+                // De-emphasize only the protocol.
+                urlTextBox.getText().setSpan(initialGrayColorSpan, 0, 10, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+            } else {  // This is a web URL.
+                // Get the index of the `/` immediately after the domain name.
+                int endOfDomainName = urlString.indexOf("/", (urlString.indexOf("//") + 2));
+
+                // Create a base URL string.
+                String baseUrl;
+
                 // Get the base URL.
-                baseUrl = urlString.substring(0, endOfDomainName);
-            } else {  // There are no characters after the base URL.
-                // Set the base URL to be the entire URL string.
-                baseUrl = urlString;
-            }
+                if (endOfDomainName > 0) {  // There is at least one character after the base URL.
+                    // Get the base URL.
+                    baseUrl = urlString.substring(0, endOfDomainName);
+                } else {  // There are no characters after the base URL.
+                    // Set the base URL to be the entire URL string.
+                    baseUrl = urlString;
+                }
 
-            // Get the index of the last `.` in the domain.
-            int lastDotIndex = baseUrl.lastIndexOf(".");
+                // Get the index of the last `.` in the domain.
+                int lastDotIndex = baseUrl.lastIndexOf(".");
 
-            // Get the index of the penultimate `.` in the domain.
-            int penultimateDotIndex = baseUrl.lastIndexOf(".", lastDotIndex - 1);
+                // Get the index of the penultimate `.` in the domain.
+                int penultimateDotIndex = baseUrl.lastIndexOf(".", lastDotIndex - 1);
 
-            // Markup the beginning of the URL.
-            if (urlString.startsWith("http://")) {  // Highlight the protocol of connections that are not encrypted.
-                urlTextBox.getText().setSpan(redColorSpan, 0, 7, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+                // Markup the beginning of the URL.
+                if (urlString.startsWith("http://")) {  // Highlight the protocol of connections that are not encrypted.
+                    urlTextBox.getText().setSpan(redColorSpan, 0, 7, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
 
-                // De-emphasize subdomains.
-                if (penultimateDotIndex > 0) {  // There is more than one subdomain in the domain name.
-                    urlTextBox.getText().setSpan(initialGrayColorSpan, 7, penultimateDotIndex + 1, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
-                }
-            } else if (urlString.startsWith("https://")) {  // De-emphasize the protocol of connections that are encrypted.
-                if (penultimateDotIndex > 0) {  // There is more than one subdomain in the domain name.
-                    // De-emphasize the protocol and the additional subdomains.
-                    urlTextBox.getText().setSpan(initialGrayColorSpan, 0, penultimateDotIndex + 1, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
-                } else {  // There is only one subdomain in the domain name.
-                    // De-emphasize only the protocol.
-                    urlTextBox.getText().setSpan(initialGrayColorSpan, 0, 8, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+                    // De-emphasize subdomains.
+                    if (penultimateDotIndex > 0) {  // There is more than one subdomain in the domain name.
+                        urlTextBox.getText().setSpan(initialGrayColorSpan, 7, penultimateDotIndex + 1, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+                    }
+                } else if (urlString.startsWith("https://")) {  // De-emphasize the protocol of connections that are encrypted.
+                    if (penultimateDotIndex > 0) {  // There is more than one subdomain in the domain name.
+                        // De-emphasize the protocol and the additional subdomains.
+                        urlTextBox.getText().setSpan(initialGrayColorSpan, 0, penultimateDotIndex + 1, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+                    } else {  // There is only one subdomain in the domain name.
+                        // De-emphasize only the protocol.
+                        urlTextBox.getText().setSpan(initialGrayColorSpan, 0, 8, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+                    }
                 }
-            }
 
-            // De-emphasize the text after the domain name.
-            if (endOfDomainName > 0) {
-                urlTextBox.getText().setSpan(finalGrayColorSpan, endOfDomainName, urlString.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+                // De-emphasize the text after the domain name.
+                if (endOfDomainName > 0) {
+                    urlTextBox.getText().setSpan(finalGrayColorSpan, endOfDomainName, urlString.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+                }
             }
         }
     }
 
     private void loadBookmarksFolder() {
         // Update the bookmarks cursor with the contents of the bookmarks database for the current folder.
-        bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarksCursorByDisplayOrder(currentBookmarksFolder);
+        bookmarksCursor = bookmarksDatabaseHelper.getBookmarksByDisplayOrder(currentBookmarksFolder);
 
         // Populate the bookmarks cursor adapter.  `this` specifies the `Context`.  `false` disables `autoRequery`.
         bookmarksCursorAdapter = new CursorAdapter(this, bookmarksCursor, false) {
@@ -4748,4 +4845,98 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             bookmarksTitleTextView.setText(currentBookmarksFolder);
         }
     }
+
+    private void openWithApp(String url) {
+        // Create the open with intent with `ACTION_VIEW`.
+        Intent openWithAppIntent = new Intent(Intent.ACTION_VIEW);
+
+        // Set the URI but not the MIME type.  This should open all available apps.
+        openWithAppIntent.setData(Uri.parse(url));
+
+        // Flag the intent to open in a new task.
+        openWithAppIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+
+        // Show the chooser.
+        startActivity(openWithAppIntent);
+    }
+
+    private void openWithBrowser(String url) {
+        // Create the open with intent with `ACTION_VIEW`.
+        Intent openWithBrowserIntent = new Intent(Intent.ACTION_VIEW);
+
+        // Set the URI and the MIME type.  `"text/html"` should load browser options.
+        openWithBrowserIntent.setDataAndType(Uri.parse(url), "text/html");
+
+        // Flag the intent to open in a new task.
+        openWithBrowserIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+
+        // Show the chooser.
+        startActivity(openWithBrowserIntent);
+    }
+
+    // This must run asynchronously because it involves a network request.  `String` declares the parameters.  `Void` does not declare progress units.  `String` contains the results.
+    private static class GetHostIpAddresses extends AsyncTask<String, Void, String> {
+        // The weak references are used to determine if the activity have disappeared while the AsyncTask is running.
+        private final WeakReference<Activity> activityWeakReference;
+
+        GetHostIpAddresses(Activity activity) {
+            // Populate the weak references.
+            activityWeakReference = new WeakReference<>(activity);
+        }
+
+        @Override
+        protected String doInBackground(String... domainName) {
+            // Get handles for the activity and the alert dialog.
+            Activity activity = activityWeakReference.get();
+
+            // Abort if the activity or the dialog is gone.
+            if ((activity == null) || activity.isFinishing()) {
+                // Return an empty spannable string builder.
+                return "";
+            }
+
+            // Initialize an IP address string builder.
+            StringBuilder ipAddresses = new StringBuilder();
+
+            // Get an array with the IP addresses for the host.
+            try {
+                // Get an array with all the IP addresses for the domain.
+                InetAddress[] inetAddressesArray = InetAddress.getAllByName(domainName[0]);
+
+                // Add each IP address to the string builder.
+                for (InetAddress inetAddress : inetAddressesArray) {
+                    if (ipAddresses.length() == 0) {  // This is the first IP address.
+                        // Add the IP address to the string builder.
+                        ipAddresses.append(inetAddress.getHostAddress());
+                    } else {  // This is not the first IP address.
+                        // Add a line break to the string builder first.
+                        ipAddresses.append("\n");
+
+                        // Add the IP address to the string builder.
+                        ipAddresses.append(inetAddress.getHostAddress());
+                    }
+                }
+            } catch (UnknownHostException exception) {
+                // Do nothing.
+            }
+
+            // Return the string.
+            return ipAddresses.toString();
+        }
+
+        // `onPostExecute()` operates on the UI thread.
+        @Override
+        protected void onPostExecute(String ipAddresses) {
+            // Get handles for the activity and the alert dialog.
+            Activity activity = activityWeakReference.get();
+
+            // Abort if the activity or the alert dialog is gone.
+            if ((activity == null) || activity.isFinishing()) {
+                return;
+            }
+
+            // Store the IP addresses.
+            currentHostIpAddresses = ipAddresses;
+        }
+    }
 }
\ No newline at end of file