]> gitweb.stoutner.com Git - PrivacyBrowserAndroid.git/blobdiff - app/src/main/java/com/stoutner/privacybrowser/helpers/ImportExportDatabaseHelper.java
Add the option to download with an external app. https://redmine.stoutner.com/issues/698
[PrivacyBrowserAndroid.git] / app / src / main / java / com / stoutner / privacybrowser / helpers / ImportExportDatabaseHelper.java
index bcec5294af58d34f937c407fab0a833390a245b4..42cd1c7ab3965afb66ab7385e8cbf456f781d411 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Copyright © 2018-2019 Soren Stoutner <soren@stoutner.com>.
+ * Copyright © 2018-2021 Soren Stoutner <soren@stoutner.com>.
  *
  * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
  *
@@ -23,6 +23,7 @@ import android.content.ContentValues;
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.database.Cursor;
+import android.database.DatabaseUtils;
 import android.database.sqlite.SQLiteDatabase;
 import android.preference.PreferenceManager;
 
@@ -35,362 +36,358 @@ import java.io.InputStream;
 import java.io.OutputStream;
 
 public class ImportExportDatabaseHelper {
+    // Declare the public constants.
     public static final String EXPORT_SUCCESSFUL = "Export Successful";
     public static final String IMPORT_SUCCESSFUL = "Import Successful";
 
-    private static final int SCHEMA_VERSION = 3;
+    // Declare the class constants.
+    private static final int SCHEMA_VERSION = 14;
     private static final String PREFERENCES_TABLE = "preferences";
 
-    // The preferences constants.
+    // Declare the preferences constants.
     private static final String _ID = "_id";
     private static final String JAVASCRIPT = "javascript";
-    private static final String FIRST_PARTY_COOKIES = "first_party_cookies";
-    private static final String THIRD_PARTY_COOKIES = "third_party_cookies";
+    private static final String COOKIES = "cookies";
     private static final String DOM_STORAGE = "dom_storage";
     private static final String SAVE_FORM_DATA = "save_form_data";
     private static final String USER_AGENT = "user_agent";
     private static final String CUSTOM_USER_AGENT = "custom_user_agent";
     private static final String INCOGNITO_MODE = "incognito_mode";
-    private static final String DO_NOT_TRACK = "do_not_track";
     private static final String ALLOW_SCREENSHOTS = "allow_screenshots";
     private static final String EASYLIST = "easylist";
     private static final String EASYPRIVACY = "easyprivacy";
     private static final String FANBOYS_ANNOYANCE_LIST = "fanboys_annoyance_list";
     private static final String FANBOYS_SOCIAL_BLOCKING_LIST = "fanboys_social_blocking_list";
+    private static final String ULTRALIST = "ultralist";
     private static final String ULTRAPRIVACY = "ultraprivacy";
     private static final String BLOCK_ALL_THIRD_PARTY_REQUESTS = "block_all_third_party_requests";
-    private static final String PROXY_THROUGH_ORBOT = "proxy_through_orbot";
-    private static final String TOR_HOMEPAGE = "tor_homepage";
-    private static final String TOR_SEARCH = "tor_search";
-    private static final String TOR_SEARCH_CUSTOM_URL = "tor_search_custom_url";
+    private static final String GOOGLE_ANALYTICS = "google_analytics";
+    private static final String FACEBOOK_CLICK_IDS = "facebook_click_ids";
+    private static final String TWITTER_AMP_REDIRECTS = "twitter_amp_redirects";
     private static final String SEARCH = "search";
     private static final String SEARCH_CUSTOM_URL = "search_custom_url";
+    private static final String PROXY = "proxy";
+    private static final String PROXY_CUSTOM_URL = "proxy_custom_url";
     private static final String FULL_SCREEN_BROWSING_MODE = "full_screen_browsing_mode";
-    private static final String HIDE_SYSTEM_BARS = "hide_system_bars";
-    private static final String TRANSLUCENT_NAVIGATION_BAR = "translucent_navigation_bar";
+    private static final String HIDE_APP_BAR = "hide_app_bar";
     private static final String CLEAR_EVERYTHING = "clear_everything";
     private static final String CLEAR_COOKIES = "clear_cookies";
     private static final String CLEAR_DOM_STORAGE = "clear_dom_storage";
     private static final String CLEAR_FORM_DATA = "clear_form_data";
+    private static final String CLEAR_LOGCAT = "clear_logcat";
     private static final String CLEAR_CACHE = "clear_cache";
     private static final String HOMEPAGE = "homepage";
     private static final String FONT_SIZE = "font_size";
+    private static final String OPEN_INTENTS_IN_NEW_TAB = "open_intents_in_new_tab";
     private static final String SWIPE_TO_REFRESH = "swipe_to_refresh";
     private static final String DOWNLOAD_WITH_EXTERNAL_APP = "download_with_external_app";
+    private static final String SCROLL_APP_BAR = "scroll_app_bar";
     private static final String DISPLAY_ADDITIONAL_APP_BAR_ICONS = "display_additional_app_bar_icons";
-    private static final String DARK_THEME = "dark_theme";
-    private static final String NIGHT_MODE = "night_mode";
+    private static final String APP_THEME = "app_theme";
+    private static final String WEBVIEW_THEME = "webview_theme";
+    private static final String WIDE_VIEWPORT = "wide_viewport";
     private static final String DISPLAY_WEBPAGE_IMAGES = "display_webpage_images";
 
-    public String exportUnencrypted(File exportFile, Context context) {
+    public String importUnencrypted(InputStream importFileInputStream, Context context){
         try {
-            // Delete the current file if it exists.
-            if (exportFile.exists()) {
-                //noinspection ResultOfMethodCallIgnored
-                exportFile.delete();
-            }
+            // Create a temporary import file.
+            File temporaryImportFile = File.createTempFile("temporary_import_file", null, context.getCacheDir());
 
-            // Create the export database.
-            SQLiteDatabase exportDatabase = SQLiteDatabase.openOrCreateDatabase(exportFile, null);
+            // Create a temporary file output stream.
+            FileOutputStream temporaryImportFileOutputStream = new FileOutputStream(temporaryImportFile);
 
-            // Set the export database version number.
-            exportDatabase.setVersion(SCHEMA_VERSION);
+            // Create a transfer byte array.
+            byte[] transferByteArray = new byte[1024];
 
-            // Create the export database domains table.
-            exportDatabase.execSQL(DomainsDatabaseHelper.CREATE_DOMAINS_TABLE);
+            // Create an integer to track the number of bytes read.
+            int bytesRead;
 
-            // Open the domains database.  The `0` specifies the database version, but that is ignored and set instead using a constant in `DomainsDatabaseHelper`.
-            DomainsDatabaseHelper domainsDatabaseHelper = new DomainsDatabaseHelper(context, null, null, 0);
+            // Copy the import file to the temporary import file.
+            while ((bytesRead = importFileInputStream.read(transferByteArray)) > 0) {
+                temporaryImportFileOutputStream.write(transferByteArray, 0, bytesRead);
+            }
 
-            // Get a full domains database cursor.
-            Cursor domainsCursor = domainsDatabaseHelper.getCompleteCursorOrderedByDomain();
+            // Flush the temporary import file output stream.
+            temporaryImportFileOutputStream.flush();
 
-            // Move to the first domain.
-            domainsCursor.moveToFirst();
+            // Close the file streams.
+            importFileInputStream.close();
+            temporaryImportFileOutputStream.close();
 
-            // Copy the data from the domains cursor into the export database.
-            for (int i = 0; i < domainsCursor.getCount(); i++) {
-                // Extract the record from the cursor and store the data in a ContentValues.
-                ContentValues domainsContentValues = new ContentValues();
-                domainsContentValues.put(DomainsDatabaseHelper.DOMAIN_NAME, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.DOMAIN_NAME)));
-                domainsContentValues.put(DomainsDatabaseHelper.ENABLE_JAVASCRIPT, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_JAVASCRIPT)));
-                domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FIRST_PARTY_COOKIES, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FIRST_PARTY_COOKIES)));
-                domainsContentValues.put(DomainsDatabaseHelper.ENABLE_THIRD_PARTY_COOKIES, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_THIRD_PARTY_COOKIES)));
-                domainsContentValues.put(DomainsDatabaseHelper.ENABLE_DOM_STORAGE, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_DOM_STORAGE)));
-                domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FORM_DATA, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FORM_DATA)));
-                domainsContentValues.put(DomainsDatabaseHelper.ENABLE_EASYLIST, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_EASYLIST)));
-                domainsContentValues.put(DomainsDatabaseHelper.ENABLE_EASYPRIVACY, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_EASYPRIVACY)));
-                domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST)));
-                domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST)));
-                domainsContentValues.put(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY)));
-                domainsContentValues.put(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS)));
-                domainsContentValues.put(DomainsDatabaseHelper.USER_AGENT, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.USER_AGENT)));
-                domainsContentValues.put(DomainsDatabaseHelper.FONT_SIZE, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.FONT_SIZE)));
-                domainsContentValues.put(DomainsDatabaseHelper.SWIPE_TO_REFRESH, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SWIPE_TO_REFRESH)));
-                domainsContentValues.put(DomainsDatabaseHelper.NIGHT_MODE, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.NIGHT_MODE)));
-                domainsContentValues.put(DomainsDatabaseHelper.DISPLAY_IMAGES, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.DISPLAY_IMAGES)));
-                domainsContentValues.put(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE)));
-                domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME)));
-                domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION)));
-                domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT)));
-                domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME)));
-                domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION)));
-                domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT)));
-                domainsContentValues.put(DomainsDatabaseHelper.SSL_START_DATE, domainsCursor.getLong(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_START_DATE)));
-                domainsContentValues.put(DomainsDatabaseHelper.SSL_END_DATE, domainsCursor.getLong(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_END_DATE)));
 
-                // Insert the record into the export database.
-                exportDatabase.insert(DomainsDatabaseHelper.DOMAINS_TABLE, null, domainsContentValues);
+            // Get a handle for the shared preference.
+            SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
 
-                // Advance to the next record.
-                domainsCursor.moveToNext();
-            }
+            // Open the import database.  Once the minimum API >= 27 the file can be opened directly without using the string.
+            SQLiteDatabase importDatabase = SQLiteDatabase.openDatabase(temporaryImportFile.toString(), null, SQLiteDatabase.OPEN_READWRITE);
 
-            // Close the domains database.
-            domainsCursor.close();
-            domainsDatabaseHelper.close();
+            // Get the database version.
+            int importDatabaseVersion = importDatabase.getVersion();
 
+            // Upgrade the database if needed.
+            if (importDatabaseVersion < SCHEMA_VERSION) {
+                switch (importDatabaseVersion) {
+                    // Upgrade from schema version 1, Privacy Browser 2.13.
+                    case 1:
+                        // Previously this upgrade added `download_with_external_app` to the Preferences table.  But that is now removed in schema version 10.
 
-            // Create the export database bookmarks table.
-            exportDatabase.execSQL(BookmarksDatabaseHelper.CREATE_BOOKMARKS_TABLE);
+                    // Upgrade from schema version 2, Privacy Browser 2.14.
+                    case 2:
+                        // Once the SQLite version is >= 3.25.0 `ALTER TABLE RENAME COLUMN` can be used.  <https://www.sqlite.org/lang_altertable.html> <https://www.sqlite.org/changes.html>
+                        // <https://developer.android.com/reference/android/database/sqlite/package-summary>
+                        // In the meantime, a new column must be created with the new name.  There is no need to delete the old column on the temporary import database.
 
-            // Open the bookmarks database.  The `0` specifies the database version, but that is ignored and set instead using a constant in `BookmarksDatabaseHelper`.
-            BookmarksDatabaseHelper bookmarksDatabaseHelper = new BookmarksDatabaseHelper(context, null, null, 0);
+                        // Create the new font size column.
+                        importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + FONT_SIZE + " TEXT");
 
-            // Get a full bookmarks cursor.
-            Cursor bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarks();
+                        // Populate the preferences table with the current font size value.
+                        importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + FONT_SIZE + " = default_font_size");
 
-            // Move to the first bookmark.
-            bookmarksCursor.moveToFirst();
+                    // Upgrade from schema version 3, Privacy Browser 2.15.
+                    case 3:
+                        // Add the Pinned IP Addresses columns to the domains table.
+                        importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.PINNED_IP_ADDRESSES + " BOOLEAN");
+                        importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.IP_ADDRESSES + " TEXT");
 
-            // Copy the data from the bookmarks cursor into the export database.
-            for (int i = 0; i < bookmarksCursor.getCount(); i++) {
-                // Extract the record from the cursor and store the data in a ContentValues.
-                ContentValues bookmarksContentValues = new ContentValues();
-                bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_NAME, bookmarksCursor.getString(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME)));
-                bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_URL, bookmarksCursor.getString(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_URL)));
-                bookmarksContentValues.put(BookmarksDatabaseHelper.PARENT_FOLDER, bookmarksCursor.getString(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.PARENT_FOLDER)));
-                bookmarksContentValues.put(BookmarksDatabaseHelper.DISPLAY_ORDER, bookmarksCursor.getInt(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.DISPLAY_ORDER)));
-                bookmarksContentValues.put(BookmarksDatabaseHelper.IS_FOLDER, bookmarksCursor.getInt(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.IS_FOLDER)));
-                bookmarksContentValues.put(BookmarksDatabaseHelper.FAVORITE_ICON, bookmarksCursor.getBlob(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.FAVORITE_ICON)));
+                    // Upgrade from schema version 4, Privacy Browser 2.16.
+                    case 4:
+                        // Add the hide and scroll app bar columns to the preferences table.
+                        importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + HIDE_APP_BAR + " BOOLEAN");
+                        importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + SCROLL_APP_BAR + " BOOLEAN");
 
-                // Insert the record into the export database.
-                exportDatabase.insert(BookmarksDatabaseHelper.BOOKMARKS_TABLE, null, bookmarksContentValues);
+                        // Get the current hide and scroll app bar settings.
+                        boolean hideAppBar = sharedPreferences.getBoolean(HIDE_APP_BAR, true);
+                        boolean scrollAppBar = sharedPreferences.getBoolean(SCROLL_APP_BAR, true);
 
-                // Advance to the next record.
-                bookmarksCursor.moveToNext();
-            }
+                        // Populate the preferences table with the current app bar values.
+                        if (hideAppBar) {
+                            importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + HIDE_APP_BAR + " = " + 1);
+                        } else {
+                            importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + HIDE_APP_BAR + " = " + 0);
+                        }
 
-            // Close the bookmarks database.
-            bookmarksCursor.close();
-            bookmarksDatabaseHelper.close();
+                        if (scrollAppBar) {
+                            importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + SCROLL_APP_BAR + " = " + 1);
+                        } else {
+                            importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + SCROLL_APP_BAR + " = " + 0);
+                        }
 
+                    // Upgrade from schema version 5, Privacy Browser 2.17.
+                    case 5:
+                        // Add the open intents in new tab column to the preferences table.
+                        importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + OPEN_INTENTS_IN_NEW_TAB + " BOOLEAN");
 
-            // Prepare the preferences table SQL creation string.
-            String CREATE_PREFERENCES_TABLE = "CREATE TABLE " + PREFERENCES_TABLE + " (" +
-                    _ID + " INTEGER PRIMARY KEY, " +
-                    JAVASCRIPT + " BOOLEAN, " +
-                    FIRST_PARTY_COOKIES + " BOOLEAN, " +
-                    THIRD_PARTY_COOKIES + " BOOLEAN, " +
-                    DOM_STORAGE + " BOOLEAN, " +
-                    SAVE_FORM_DATA + " BOOLEAN, " +
-                    USER_AGENT + " TEXT, " +
-                    CUSTOM_USER_AGENT + " TEXT, " +
-                    INCOGNITO_MODE + " BOOLEAN, " +
-                    DO_NOT_TRACK + " BOOLEAN, " +
-                    ALLOW_SCREENSHOTS + " BOOLEAN, " +
-                    EASYLIST + " BOOLEAN, " +
-                    EASYPRIVACY + " BOOLEAN, " +
-                    FANBOYS_ANNOYANCE_LIST + " BOOLEAN, " +
-                    FANBOYS_SOCIAL_BLOCKING_LIST + " BOOLEAN, " +
-                    ULTRAPRIVACY + " BOOLEAN, " +
-                    BLOCK_ALL_THIRD_PARTY_REQUESTS + " BOOLEAN, " +
-                    PROXY_THROUGH_ORBOT + " BOOLEAN, " +
-                    TOR_HOMEPAGE + " TEXT, " +
-                    TOR_SEARCH + " TEXT, " +
-                    TOR_SEARCH_CUSTOM_URL + " TEXT, " +
-                    SEARCH + " TEXT, " +
-                    SEARCH_CUSTOM_URL + " TEXT, " +
-                    FULL_SCREEN_BROWSING_MODE + " BOOLEAN, " +
-                    HIDE_SYSTEM_BARS + " BOOLEAN, " +
-                    TRANSLUCENT_NAVIGATION_BAR + " BOOLEAN, " +
-                    CLEAR_EVERYTHING + " BOOLEAN, " +
-                    CLEAR_COOKIES + " BOOLEAN, " +
-                    CLEAR_DOM_STORAGE + " BOOLEAN, " +
-                    CLEAR_FORM_DATA + " BOOLEAN, " +
-                    CLEAR_CACHE + " BOOLEAN, " +
-                    HOMEPAGE + " TEXT, " +
-                    FONT_SIZE + " TEXT, " +
-                    SWIPE_TO_REFRESH + " BOOLEAN, " +
-                    DOWNLOAD_WITH_EXTERNAL_APP + " BOOLEAN, " +
-                    DISPLAY_ADDITIONAL_APP_BAR_ICONS + " BOOLEAN, " +
-                    DARK_THEME + " BOOLEAN, " +
-                    NIGHT_MODE + " BOOLEAN, " +
-                    DISPLAY_WEBPAGE_IMAGES + " BOOLEAN)";
+                        // Get the current open intents in new tab preference.
+                        boolean openIntentsInNewTab = sharedPreferences.getBoolean(OPEN_INTENTS_IN_NEW_TAB, true);
 
-            // Create the export database preferences table.
-            exportDatabase.execSQL(CREATE_PREFERENCES_TABLE);
+                        // Populate the preferences table with the current open intents value.
+                        if (openIntentsInNewTab) {
+                            importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + OPEN_INTENTS_IN_NEW_TAB + " = " + 1);
+                        } else {
+                            importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + OPEN_INTENTS_IN_NEW_TAB + " = " + 0);
+                        }
 
-            // Get a handle for the shared preference.
-            SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
+                    // Upgrade from schema version 6, Privacy Browser 3.0.
+                    case 6:
+                        // Add the wide viewport column to the domains table.
+                        importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.WIDE_VIEWPORT + " INTEGER");
+
+                        // Add the Google Analytics, Facebook Click IDs, Twitter AMP redirects, and wide viewport columns to the preferences table.
+                        importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + GOOGLE_ANALYTICS + " BOOLEAN");
+                        importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + FACEBOOK_CLICK_IDS + " BOOLEAN");
+                        importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + TWITTER_AMP_REDIRECTS + " BOOLEAN");
+                        importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + WIDE_VIEWPORT + " BOOLEAN");
+
+                        // Get the current preference values.
+                        boolean googleAnalytics = sharedPreferences.getBoolean(GOOGLE_ANALYTICS, true);
+                        boolean facebookClickIds = sharedPreferences.getBoolean(FACEBOOK_CLICK_IDS, true);
+                        boolean twitterAmpRedirects = sharedPreferences.getBoolean(TWITTER_AMP_REDIRECTS, true);
+                        boolean wideViewport = sharedPreferences.getBoolean(WIDE_VIEWPORT, true);
+
+                        // Populate the preferences with the current Google Analytics value.
+                        if (googleAnalytics) {
+                            importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + GOOGLE_ANALYTICS + " = " + 1);
+                        } else {
+                            importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + GOOGLE_ANALYTICS + " = " + 0);
+                        }
 
-            // Create a ContentValues with the preferences information.
-            ContentValues preferencesContentValues = new ContentValues();
-            preferencesContentValues.put(JAVASCRIPT, sharedPreferences.getBoolean(JAVASCRIPT, false));
-            preferencesContentValues.put(FIRST_PARTY_COOKIES, sharedPreferences.getBoolean(FIRST_PARTY_COOKIES, false));
-            preferencesContentValues.put(THIRD_PARTY_COOKIES, sharedPreferences.getBoolean(THIRD_PARTY_COOKIES, false));
-            preferencesContentValues.put(DOM_STORAGE, sharedPreferences.getBoolean(DOM_STORAGE, false));
-            preferencesContentValues.put(SAVE_FORM_DATA, sharedPreferences.getBoolean(SAVE_FORM_DATA, false));  // Save form data can be removed once the minimum API >= 26.
-            preferencesContentValues.put(USER_AGENT, sharedPreferences.getString(USER_AGENT, context.getString(R.string.user_agent_default_value)));
-            preferencesContentValues.put(CUSTOM_USER_AGENT, sharedPreferences.getString(CUSTOM_USER_AGENT, context.getString(R.string.custom_user_agent_default_value)));
-            preferencesContentValues.put(INCOGNITO_MODE, sharedPreferences.getBoolean(INCOGNITO_MODE, false));
-            preferencesContentValues.put(DO_NOT_TRACK, sharedPreferences.getBoolean(DO_NOT_TRACK, false));
-            preferencesContentValues.put(ALLOW_SCREENSHOTS, sharedPreferences.getBoolean(ALLOW_SCREENSHOTS, false));
-            preferencesContentValues.put(EASYLIST, sharedPreferences.getBoolean(EASYLIST, true));
-            preferencesContentValues.put(EASYPRIVACY, sharedPreferences.getBoolean(EASYPRIVACY, true));
-            preferencesContentValues.put(FANBOYS_ANNOYANCE_LIST, sharedPreferences.getBoolean(FANBOYS_ANNOYANCE_LIST, true));
-            preferencesContentValues.put(FANBOYS_SOCIAL_BLOCKING_LIST, sharedPreferences.getBoolean(FANBOYS_SOCIAL_BLOCKING_LIST, true));
-            preferencesContentValues.put(ULTRAPRIVACY, sharedPreferences.getBoolean(ULTRAPRIVACY, true));
-            preferencesContentValues.put(BLOCK_ALL_THIRD_PARTY_REQUESTS, sharedPreferences.getBoolean(BLOCK_ALL_THIRD_PARTY_REQUESTS, false));
-            preferencesContentValues.put(PROXY_THROUGH_ORBOT, sharedPreferences.getBoolean(PROXY_THROUGH_ORBOT, false));
-            preferencesContentValues.put(TOR_HOMEPAGE, sharedPreferences.getString(TOR_HOMEPAGE, context.getString(R.string.tor_homepage_default_value)));
-            preferencesContentValues.put(TOR_SEARCH, sharedPreferences.getString(TOR_SEARCH, context.getString(R.string.tor_search_default_value)));
-            preferencesContentValues.put(TOR_SEARCH_CUSTOM_URL, sharedPreferences.getString(TOR_SEARCH_CUSTOM_URL, context.getString(R.string.tor_search_custom_url_default_value)));
-            preferencesContentValues.put(SEARCH, sharedPreferences.getString(SEARCH, context.getString(R.string.search_default_value)));
-            preferencesContentValues.put(SEARCH_CUSTOM_URL, sharedPreferences.getString(SEARCH_CUSTOM_URL, context.getString(R.string.search_custom_url_default_value)));
-            preferencesContentValues.put(FULL_SCREEN_BROWSING_MODE, sharedPreferences.getBoolean(FULL_SCREEN_BROWSING_MODE, false));
-            preferencesContentValues.put(HIDE_SYSTEM_BARS, sharedPreferences.getBoolean(HIDE_SYSTEM_BARS, false));
-            preferencesContentValues.put(TRANSLUCENT_NAVIGATION_BAR, sharedPreferences.getBoolean(TRANSLUCENT_NAVIGATION_BAR, true));
-            preferencesContentValues.put(CLEAR_EVERYTHING, sharedPreferences.getBoolean(CLEAR_EVERYTHING, true));
-            preferencesContentValues.put(CLEAR_COOKIES, sharedPreferences.getBoolean(CLEAR_COOKIES, true));
-            preferencesContentValues.put(CLEAR_DOM_STORAGE, sharedPreferences.getBoolean(CLEAR_DOM_STORAGE, true));
-            preferencesContentValues.put(CLEAR_FORM_DATA, sharedPreferences.getBoolean(CLEAR_FORM_DATA, true));  // Clear form data can be removed once the minimum API >= 26.
-            preferencesContentValues.put(CLEAR_CACHE, sharedPreferences.getBoolean(CLEAR_CACHE, true));
-            preferencesContentValues.put(HOMEPAGE, sharedPreferences.getString(HOMEPAGE, context.getString(R.string.homepage_default_value)));
-            preferencesContentValues.put(FONT_SIZE, sharedPreferences.getString(FONT_SIZE, context.getString(R.string.font_size_default_value)));
-            preferencesContentValues.put(SWIPE_TO_REFRESH, sharedPreferences.getBoolean(SWIPE_TO_REFRESH, true));
-            preferencesContentValues.put(DOWNLOAD_WITH_EXTERNAL_APP, sharedPreferences.getBoolean(DOWNLOAD_WITH_EXTERNAL_APP, false));
-            preferencesContentValues.put(DISPLAY_ADDITIONAL_APP_BAR_ICONS, sharedPreferences.getBoolean(DISPLAY_ADDITIONAL_APP_BAR_ICONS, false));
-            preferencesContentValues.put(DARK_THEME, sharedPreferences.getBoolean(DARK_THEME, false));
-            preferencesContentValues.put(NIGHT_MODE, sharedPreferences.getBoolean(NIGHT_MODE, false));
-            preferencesContentValues.put(DISPLAY_WEBPAGE_IMAGES, sharedPreferences.getBoolean(DISPLAY_WEBPAGE_IMAGES, true));
+                        // Populate the preferences with the current Facebook Click IDs value.
+                        if (facebookClickIds) {
+                            importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + FACEBOOK_CLICK_IDS + " = " + 1);
+                        } else {
+                            importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + FACEBOOK_CLICK_IDS + " = " + 0);
+                        }
 
-            // Insert the preferences into the export database.
-            exportDatabase.insert(PREFERENCES_TABLE, null, preferencesContentValues);
+                        // Populate the preferences table with the current Twitter AMP redirects value.
+                        if (twitterAmpRedirects) {
+                            importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + TWITTER_AMP_REDIRECTS + " = " + 1);
+                        } else {
+                            importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + TWITTER_AMP_REDIRECTS + " = " + 0);
+                        }
 
-            // Close the export database.
-            exportDatabase.close();
+                        // Populate the preferences table with the current wide viewport value.
+                        if (wideViewport) {
+                            importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + WIDE_VIEWPORT + " = " + 1);
+                        } else {
+                            importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + WIDE_VIEWPORT + " = " + 0);
+                        }
 
-            // Convert the database file to a string.
-            String exportFileString = exportFile.toString();
+                    // Upgrade from schema version 7, Privacy Browser 3.1.
+                    case 7:
+                        // Add the UltraList column to the domains table.
+                        importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.ULTRALIST + " BOOLEAN");
 
-            // Create strings for the temporary database files.
-            String journalFileString = exportFileString + "-journal";
+                        // Add the UltraList column to the preferences table.
+                        importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + ULTRALIST + " BOOLEAN");
 
-            // Get `Files` for the temporary database files.
-            File journalFile = new File(journalFileString);
+                        // Get the current preference values.
+                        boolean ultraList = sharedPreferences.getBoolean(ULTRALIST, true);
 
-            // Delete the Journal file if it exists.
-            if (journalFile.exists()) {
-                //noinspection ResultOfMethodCallIgnored
-                journalFile.delete();
-            }
+                        // Populate the preferences tables with the current UltraList value.
+                        if (ultraList) {
+                            importDatabase.execSQL("UPDATE " + DomainsDatabaseHelper.DOMAINS_TABLE + " SET " + DomainsDatabaseHelper.ULTRALIST + " = " + 1);
+                            importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + ULTRALIST + " = " + 1);
+                        } else {
+                            importDatabase.execSQL("UPDATE " + DomainsDatabaseHelper.DOMAINS_TABLE + " SET " + DomainsDatabaseHelper.ULTRALIST + " = " + 0);
+                            importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + ULTRALIST + " = " + 0);
+                        }
 
-            // Export successful.
-            return EXPORT_SUCCESSFUL;
-        } catch (Exception exception) {
-            // Return the export error.
-            return exception.toString();
-        }
-    }
+                    // Upgrade from schema version 8, Privacy Browser 3.2.
+                    case 8:
+                        // Add the new proxy columns to the preferences table.
+                        importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + PROXY + " TEXT");
+                        importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + PROXY_CUSTOM_URL + " TEXT");
 
-    public String importUnencrypted(File importFile, Context context){
-        try {
-            // Create a temporary import file string.
-            String temporaryImportFileString = context.getCacheDir() + "/" + "temporary_import_file";
+                        // Get the current proxy values.
+                        String proxy = sharedPreferences.getString(PROXY, context.getString(R.string.proxy_default_value));
+                        String proxyCustomUrl = sharedPreferences.getString(PROXY_CUSTOM_URL, context.getString(R.string.proxy_custom_url_default_value));
 
-            // Get a handle for a temporary import file.
-            File temporaryImportFile = new File(temporaryImportFileString);
+                        // SQL escape the proxy custom URL string.
+                        proxyCustomUrl = DatabaseUtils.sqlEscapeString(proxyCustomUrl);
 
-            // Delete the temporary import file if it already exists.
-            if (temporaryImportFile.exists()) {
-                //noinspection ResultOfMethodCallIgnored
-                temporaryImportFile.delete();
-            }
+                        // Populate the preferences table with the current proxy values. The proxy custom URL does not need to be surrounded by `'` because it was SLQ escaped above.
+                        importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + PROXY + " = '" + proxy + "'");
+                        importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + PROXY_CUSTOM_URL + " = " + proxyCustomUrl);
 
-            // Create input and output streams.
-            InputStream importFileInputStream = new FileInputStream(importFile);
-            OutputStream temporaryImportFileOutputStream = new FileOutputStream(temporaryImportFile);
+                    // Upgrade from schema version 9, Privacy Browser 3.3.
+                    case 9:
+                        // Previously this upgrade added `download_location` and `download_custom_location` to the Preferences table.  But they are now removed in schema version 13.
 
-            // Create a byte array.
-            byte[] transferByteArray = new byte[1024];
+                    // Upgrade from schema version 10, Privacy Browser 3.4.
+                    case 10:
+                        // Add the app theme column to the preferences table.
+                        importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + APP_THEME + " TEXT");
 
-            // Create an integer to track the number of bytes read.
-            int bytesRead;
+                        // Get a cursor for the dark theme preference.
+                        Cursor darkThemePreferencesCursor = importDatabase.rawQuery("SELECT dark_theme FROM " + PREFERENCES_TABLE, null);
 
-            // Copy the import file to the temporary import file.  Once API >= 26 `Files.copy` can be used instead.
-            while ((bytesRead = importFileInputStream.read(transferByteArray)) > 0) {
-                temporaryImportFileOutputStream.write(transferByteArray, 0, bytesRead);
-            }
+                        // Move to the first preference.
+                        darkThemePreferencesCursor.moveToFirst();
 
-            // Close the file streams.
-            importFileInputStream.close();
-            temporaryImportFileOutputStream.close();
+                        // Get the old dark theme value, which is in column 0.
+                        int darkTheme = darkThemePreferencesCursor.getInt(0);
 
+                        // Close the dark theme preference cursor.
+                        darkThemePreferencesCursor.close();
 
-            // Get a handle for the shared preference.
-            SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
+                        // Populate the app theme according to the old dark theme preference.
+                        if (darkTheme == 0) {  // A light theme was selected.
+                            // Set the app theme to be the system default.
+                            importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + APP_THEME + " = 'System default'");
+                        } else {  // A dark theme was selected.
+                            // Set the app theme to be dark.
+                            importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + APP_THEME + " = 'Dark'");
+                        }
 
-            // Open the import database.  Once API >= 27 the file can be opened directly without using the string.
-            SQLiteDatabase importDatabase = SQLiteDatabase.openDatabase(temporaryImportFileString, null, SQLiteDatabase.OPEN_READWRITE);
+                        // Add the WebView theme to the domains table.  This defaults to 0, which is `System default`, so a separate step isn't needed to populate the database.
+                        importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.WEBVIEW_THEME + " INTEGER");
 
-            // Get the database version.
-            int importDatabaseVersion = importDatabase.getVersion();
+                        // Add the WebView theme to the preferences table.
+                        importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + WEBVIEW_THEME + " TEXT");
 
-            // Upgrade the database if needed.
-            if (importDatabaseVersion < SCHEMA_VERSION) {
-                switch (importDatabaseVersion){
-                    // Upgrade from schema version 1.
-                    case 1:
-                        // Add the download with external app preference.
-                        importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + DOWNLOAD_WITH_EXTERNAL_APP + " BOOLEAN");
+                        // Get the WebView theme default value string.
+                        String webViewThemeDefaultValue = context.getString(R.string.webview_theme_default_value);
+
+                        // Set the WebView theme in the preferences table to be the default.
+                        importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + WEBVIEW_THEME + " = " + "'" + webViewThemeDefaultValue + "'");
+
+                    // Upgrade from schema version 11, Privacy Browser 3.5.
+                    case 11:
+                        // Add the clear logcat column to the preferences table.
+                        importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + CLEAR_LOGCAT + " BOOLEAN");
 
-                        // Get the current setting for downloading with an external app.
-                        boolean downloadWithExternalApp = sharedPreferences.getBoolean("download_with_external_app", false);
+                        // Get the current clear logcat value.
+                        boolean clearLogcat = sharedPreferences.getBoolean(CLEAR_LOGCAT, true);
 
-                        // Set the download with external app preference to the current default.
-                        if (downloadWithExternalApp) {
-                            importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + DOWNLOAD_WITH_EXTERNAL_APP + " = " + 1);
+                        // Populate the preference table with the current clear logcat value.
+                        if (clearLogcat) {
+                            importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + CLEAR_LOGCAT + " = " + 1);
                         } else {
-                            importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + DOWNLOAD_WITH_EXTERNAL_APP + " = " + 0);
+                            importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + CLEAR_LOGCAT + " = " + 0);
                         }
 
-                    // Upgrade from schema version 2.
-                    case 2:
-                        // Once the SQLite version is >= 3.25.0 `ALTER TABLE RENAME COLUMN` can be used.  https://www.sqlite.org/lang_altertable.html  https://www.sqlite.org/changes.html
-                        // https://developer.android.com/reference/android/database/sqlite/package-summary
+                    // Upgrade from schema version 12, Privacy Browser 3.6.
+                    case 12:
+                        // Do nothing.  `download_location` and `download_custom_location` were removed from the preferences table.
+
+                    // Upgrade from schema version 13, Privacy Browser 3.7
+                    case 13:
+                        // `enabledthirdpartycookies` was removed from the domains table.  `do_not_track` and `third_party_cookies` were removed from the preferences table.
+
+                        // Once the SQLite version is >= 3.25.0 `ALTER TABLE RENAME COLUMN` can be used.  <https://www.sqlite.org/lang_altertable.html> <https://www.sqlite.org/changes.html>
+                        // <https://developer.android.com/reference/android/database/sqlite/package-summary>
                         // In the meantime, a new column must be created with the new name.  There is no need to delete the old column on the temporary import database.
 
-                        // Get a cursor with the current `default_font_size` value.
-                        Cursor importDatabasePreferenceCursor = importDatabase.rawQuery("SELECT default_font_size FROM " + PREFERENCES_TABLE, null);
+                        // Create the new cookies columns.
+                        importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.COOKIES + " BOOLEAN");
+                        importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + COOKIES + " BOOLEAN");
 
-                        // Move to the beginning fo the cursor.
-                        importDatabasePreferenceCursor.moveToFirst();
+                        // Copy the data from the old cookies columns to the new ones.
+                        importDatabase.execSQL("UPDATE " + DomainsDatabaseHelper.DOMAINS_TABLE + " SET " + DomainsDatabaseHelper.COOKIES + " = enablefirstpartycookies");
+                        importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + COOKIES + " = first_party_cookies");
 
-                        // Get the current value in `default_font_size`.
-                        String fontSize = importDatabasePreferenceCursor.getString(importDatabasePreferenceCursor.getColumnIndex("default_font_size"));
+                        // Create the download with external app column.
+                        importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + DOWNLOAD_WITH_EXTERNAL_APP + " BOOLEAN");
+                }
+            }
 
-                        // Close the cursor.
-                        importDatabasePreferenceCursor.close();
+            // Get a cursor for the bookmarks table.
+            Cursor importBookmarksCursor = importDatabase.rawQuery("SELECT * FROM " + BookmarksDatabaseHelper.BOOKMARKS_TABLE, null);
 
-                        // Create a new column named `font_size`.
-                        importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + FONT_SIZE + " TEXT");
+            // Delete the current bookmarks database.
+            context.deleteDatabase(BookmarksDatabaseHelper.BOOKMARKS_DATABASE);
 
-                        // Place the font size string in the new column.
-                        importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + FONT_SIZE + " = " + fontSize);
-                }
+            // Create a new bookmarks database.  The `0` specifies the database version, but that is ignored and set instead using a constant in `BookmarksDatabaseHelper`.
+            BookmarksDatabaseHelper bookmarksDatabaseHelper = new BookmarksDatabaseHelper(context, null, null, 0);
+
+            // Move to the first bookmark.
+            importBookmarksCursor.moveToFirst();
+
+            // Copy the data from the import bookmarks cursor into the bookmarks database.
+            for (int i = 0; i < importBookmarksCursor.getCount(); i++) {
+                // Extract the record from the cursor and store the data in a ContentValues.
+                ContentValues bookmarksContentValues = new ContentValues();
+                bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_NAME, importBookmarksCursor.getString(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME)));
+                bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_URL, importBookmarksCursor.getString(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_URL)));
+                bookmarksContentValues.put(BookmarksDatabaseHelper.PARENT_FOLDER, importBookmarksCursor.getString(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.PARENT_FOLDER)));
+                bookmarksContentValues.put(BookmarksDatabaseHelper.DISPLAY_ORDER, importBookmarksCursor.getInt(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.DISPLAY_ORDER)));
+                bookmarksContentValues.put(BookmarksDatabaseHelper.IS_FOLDER, importBookmarksCursor.getInt(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.IS_FOLDER)));
+                bookmarksContentValues.put(BookmarksDatabaseHelper.FAVORITE_ICON, importBookmarksCursor.getBlob(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.FAVORITE_ICON)));
+
+                // Insert the record into the export database.
+                bookmarksDatabaseHelper.createBookmark(bookmarksContentValues);
+
+                // Advance to the next record.
+                importBookmarksCursor.moveToNext();
             }
 
+            // Close the bookmarks cursor.
+            importBookmarksCursor.close();
+
+            // Close the bookmarks database.
+            bookmarksDatabaseHelper.close();
+
+
             // Get a cursor for the domains table.
             Cursor importDomainsCursor = importDatabase.rawQuery("SELECT * FROM " + DomainsDatabaseHelper.DOMAINS_TABLE + " ORDER BY " + DomainsDatabaseHelper.DOMAIN_NAME + " ASC", null);
 
@@ -409,8 +406,7 @@ public class ImportExportDatabaseHelper {
                 ContentValues domainsContentValues = new ContentValues();
                 domainsContentValues.put(DomainsDatabaseHelper.DOMAIN_NAME, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.DOMAIN_NAME)));
                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_JAVASCRIPT, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_JAVASCRIPT)));
-                domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FIRST_PARTY_COOKIES, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FIRST_PARTY_COOKIES)));
-                domainsContentValues.put(DomainsDatabaseHelper.ENABLE_THIRD_PARTY_COOKIES, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_THIRD_PARTY_COOKIES)));
+                domainsContentValues.put(DomainsDatabaseHelper.COOKIES, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.COOKIES)));
                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_DOM_STORAGE, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_DOM_STORAGE)));
                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FORM_DATA, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FORM_DATA)));
                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_EASYLIST, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_EASYLIST)));
@@ -419,13 +415,15 @@ public class ImportExportDatabaseHelper {
                         importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST)));
                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST,
                         importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST)));
+                domainsContentValues.put(DomainsDatabaseHelper.ULTRALIST, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ULTRALIST)));
                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY)));
                 domainsContentValues.put(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS,
                         importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS)));
                 domainsContentValues.put(DomainsDatabaseHelper.USER_AGENT, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.USER_AGENT)));
                 domainsContentValues.put(DomainsDatabaseHelper.FONT_SIZE, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.FONT_SIZE)));
                 domainsContentValues.put(DomainsDatabaseHelper.SWIPE_TO_REFRESH, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SWIPE_TO_REFRESH)));
-                domainsContentValues.put(DomainsDatabaseHelper.NIGHT_MODE, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.NIGHT_MODE)));
+                domainsContentValues.put(DomainsDatabaseHelper.WEBVIEW_THEME, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.WEBVIEW_THEME)));
+                domainsContentValues.put(DomainsDatabaseHelper.WIDE_VIEWPORT, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.WIDE_VIEWPORT)));
                 domainsContentValues.put(DomainsDatabaseHelper.DISPLAY_IMAGES, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.DISPLAY_IMAGES)));
                 domainsContentValues.put(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE)));
                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME)));
@@ -438,6 +436,8 @@ public class ImportExportDatabaseHelper {
                         importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT)));
                 domainsContentValues.put(DomainsDatabaseHelper.SSL_START_DATE, importDomainsCursor.getLong(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_START_DATE)));
                 domainsContentValues.put(DomainsDatabaseHelper.SSL_END_DATE, importDomainsCursor.getLong(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_END_DATE)));
+                domainsContentValues.put(DomainsDatabaseHelper.PINNED_IP_ADDRESSES, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_IP_ADDRESSES)));
+                domainsContentValues.put(DomainsDatabaseHelper.IP_ADDRESSES, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.IP_ADDRESSES)));
 
                 // Insert the record into the export database.
                 domainsDatabaseHelper.addDomain(domainsContentValues);
@@ -453,44 +453,7 @@ public class ImportExportDatabaseHelper {
             domainsDatabaseHelper.close();
 
 
-            // Get a cursor for the bookmarks table.
-            Cursor importBookmarksCursor = importDatabase.rawQuery("SELECT * FROM " + BookmarksDatabaseHelper.BOOKMARKS_TABLE, null);
-
-            // Delete the current bookmarks database.
-            context.deleteDatabase(BookmarksDatabaseHelper.BOOKMARKS_DATABASE);
-
-            // Create a new bookmarks database.  The `0` specifies the database version, but that is ignored and set instead using a constant in `BookmarksDatabaseHelper`.
-            BookmarksDatabaseHelper bookmarksDatabaseHelper = new BookmarksDatabaseHelper(context, null, null, 0);
-
-            // Move to the first bookmark.
-            importBookmarksCursor.moveToFirst();
-
-            // Copy the data from the import bookmarks cursor into the bookmarks database.
-            for (int i = 0; i < importBookmarksCursor.getCount(); i++) {
-                // Extract the record from the cursor and store the data in a ContentValues.
-                ContentValues bookmarksContentValues = new ContentValues();
-                bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_NAME, importBookmarksCursor.getString(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME)));
-                bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_URL, importBookmarksCursor.getString(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_URL)));
-                bookmarksContentValues.put(BookmarksDatabaseHelper.PARENT_FOLDER, importBookmarksCursor.getString(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.PARENT_FOLDER)));
-                bookmarksContentValues.put(BookmarksDatabaseHelper.DISPLAY_ORDER, importBookmarksCursor.getInt(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.DISPLAY_ORDER)));
-                bookmarksContentValues.put(BookmarksDatabaseHelper.IS_FOLDER, importBookmarksCursor.getInt(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.IS_FOLDER)));
-                bookmarksContentValues.put(BookmarksDatabaseHelper.FAVORITE_ICON, importBookmarksCursor.getBlob(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.FAVORITE_ICON)));
-
-                // Insert the record into the export database.
-                bookmarksDatabaseHelper.createBookmark(bookmarksContentValues);
-
-                // Advance to the next record.
-                importBookmarksCursor.moveToNext();
-            }
-
-            // Close the bookmarks cursor.
-            importBookmarksCursor.close();
-
-            // Close the bookmarks database.
-            bookmarksDatabaseHelper.close();
-
-
-            // Get a cursor for the bookmarks table.
+            // Get a cursor for the preferences table.
             Cursor importPreferencesCursor = importDatabase.rawQuery("SELECT * FROM " + PREFERENCES_TABLE, null);
 
             // Move to the first preference.
@@ -499,91 +462,303 @@ public class ImportExportDatabaseHelper {
             // Import the preference data.
             sharedPreferences.edit()
                     .putBoolean(JAVASCRIPT, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(JAVASCRIPT)) == 1)
-                    .putBoolean(FIRST_PARTY_COOKIES, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(FIRST_PARTY_COOKIES)) == 1)
-                    .putBoolean(THIRD_PARTY_COOKIES, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(THIRD_PARTY_COOKIES)) == 1)
+                    .putBoolean(COOKIES, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(COOKIES)) == 1)
                     .putBoolean(DOM_STORAGE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(DOM_STORAGE)) == 1)
                     // Save form data can be removed once the minimum API >= 26.
                     .putBoolean(SAVE_FORM_DATA, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(SAVE_FORM_DATA)) == 1)
                     .putString(USER_AGENT, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(USER_AGENT)))
                     .putString(CUSTOM_USER_AGENT, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(CUSTOM_USER_AGENT)))
                     .putBoolean(INCOGNITO_MODE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(INCOGNITO_MODE)) == 1)
-                    .putBoolean(DO_NOT_TRACK, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(DO_NOT_TRACK)) == 1)
                     .putBoolean(ALLOW_SCREENSHOTS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(ALLOW_SCREENSHOTS)) == 1)
                     .putBoolean(EASYLIST, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(EASYLIST)) == 1)
                     .putBoolean(EASYPRIVACY, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(EASYPRIVACY)) == 1)
                     .putBoolean(FANBOYS_ANNOYANCE_LIST, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(FANBOYS_ANNOYANCE_LIST)) == 1)
                     .putBoolean(FANBOYS_SOCIAL_BLOCKING_LIST, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(FANBOYS_SOCIAL_BLOCKING_LIST)) == 1)
+                    .putBoolean(ULTRALIST, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(ULTRALIST)) == 1)
                     .putBoolean(ULTRAPRIVACY, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(ULTRAPRIVACY)) == 1)
                     .putBoolean(BLOCK_ALL_THIRD_PARTY_REQUESTS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(BLOCK_ALL_THIRD_PARTY_REQUESTS)) == 1)
-                    .putBoolean(PROXY_THROUGH_ORBOT, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(PROXY_THROUGH_ORBOT)) == 1)
-                    .putString(TOR_HOMEPAGE, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(TOR_HOMEPAGE)))
-                    .putString(TOR_SEARCH, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(TOR_SEARCH)))
-                    .putString(TOR_SEARCH_CUSTOM_URL, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(TOR_SEARCH_CUSTOM_URL)))
+                    .putBoolean(GOOGLE_ANALYTICS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(GOOGLE_ANALYTICS)) == 1)
+                    .putBoolean(FACEBOOK_CLICK_IDS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(FACEBOOK_CLICK_IDS)) == 1)
+                    .putBoolean(TWITTER_AMP_REDIRECTS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(TWITTER_AMP_REDIRECTS)) == 1)
                     .putString(SEARCH, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(SEARCH)))
                     .putString(SEARCH_CUSTOM_URL, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(SEARCH_CUSTOM_URL)))
+                    .putString(PROXY, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(PROXY)))
+                    .putString(PROXY_CUSTOM_URL, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(PROXY_CUSTOM_URL)))
                     .putBoolean(FULL_SCREEN_BROWSING_MODE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(FULL_SCREEN_BROWSING_MODE)) == 1)
-                    .putBoolean(HIDE_SYSTEM_BARS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(HIDE_SYSTEM_BARS)) == 1)
-                    .putBoolean(TRANSLUCENT_NAVIGATION_BAR, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(TRANSLUCENT_NAVIGATION_BAR)) == 1)
+                    .putBoolean(HIDE_APP_BAR, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(HIDE_APP_BAR)) == 1)
                     .putBoolean(CLEAR_EVERYTHING, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_EVERYTHING)) == 1)
                     .putBoolean(CLEAR_COOKIES, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_COOKIES)) == 1)
                     .putBoolean(CLEAR_DOM_STORAGE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_DOM_STORAGE)) == 1)
                     // Clear form data can be removed once the minimum API >= 26.
                     .putBoolean(CLEAR_FORM_DATA, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_FORM_DATA)) == 1)
+                    .putBoolean(CLEAR_LOGCAT, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_LOGCAT)) == 1)
                     .putBoolean(CLEAR_CACHE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_CACHE)) == 1)
                     .putString(HOMEPAGE, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(HOMEPAGE)))
                     .putString(FONT_SIZE, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(FONT_SIZE)))
+                    .putBoolean(OPEN_INTENTS_IN_NEW_TAB, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(OPEN_INTENTS_IN_NEW_TAB)) == 1)
                     .putBoolean(SWIPE_TO_REFRESH, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(SWIPE_TO_REFRESH)) == 1)
                     .putBoolean(DOWNLOAD_WITH_EXTERNAL_APP, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(DOWNLOAD_WITH_EXTERNAL_APP)) == 1)
+                    .putBoolean(SCROLL_APP_BAR, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(SCROLL_APP_BAR)) == 1)
                     .putBoolean(DISPLAY_ADDITIONAL_APP_BAR_ICONS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(DISPLAY_ADDITIONAL_APP_BAR_ICONS)) == 1)
-                    .putBoolean(DARK_THEME, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(DARK_THEME)) == 1)
-                    .putBoolean(NIGHT_MODE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(NIGHT_MODE)) == 1)
+                    .putString(APP_THEME, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(APP_THEME)))
+                    .putString(WEBVIEW_THEME, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(WEBVIEW_THEME)))
+                    .putBoolean(WIDE_VIEWPORT, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(WIDE_VIEWPORT)) == 1)
                     .putBoolean(DISPLAY_WEBPAGE_IMAGES, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(DISPLAY_WEBPAGE_IMAGES)) == 1)
                     .apply();
 
             // Close the preferences cursor.
             importPreferencesCursor.close();
 
-
             // Close the import database.
             importDatabase.close();
 
-            // Create strings for the temporary database files.
-            String shmFileString = temporaryImportFileString + "-shm";
-            String walFileString = temporaryImportFileString + "-wal";
-            String journalFileString = temporaryImportFileString + "-journal";
+            // Delete the temporary import file database, journal, and other related auxiliary files.
+            SQLiteDatabase.deleteDatabase(temporaryImportFile);
 
-            // Get `Files` for the temporary database files.
-            File shmFile = new File(shmFileString);
-            File walFile = new File(walFileString);
-            File journalFile = new File(journalFileString);
+            // Import successful.
+            return IMPORT_SUCCESSFUL;
+        } catch (Exception exception) {
+            // Return the import error.
+            return exception.toString();
+        }
+    }
+
+    public String exportUnencrypted(OutputStream exportFileOutputStream, Context context) {
+        try {
+            // Create a temporary export file.
+            File temporaryExportFile = File.createTempFile("temporary_export_file", null, context.getCacheDir());
+
+            // Create the temporary export database.
+            SQLiteDatabase temporaryExportDatabase = SQLiteDatabase.openOrCreateDatabase(temporaryExportFile, null);
+
+            // Set the temporary export database version number.
+            temporaryExportDatabase.setVersion(SCHEMA_VERSION);
+
+
+            // Create the temporary export database bookmarks table.
+            temporaryExportDatabase.execSQL(BookmarksDatabaseHelper.CREATE_BOOKMARKS_TABLE);
+
+            // Open the bookmarks database.  The `0` specifies the database version, but that is ignored and set instead using a constant in `BookmarksDatabaseHelper`.
+            BookmarksDatabaseHelper bookmarksDatabaseHelper = new BookmarksDatabaseHelper(context, null, null, 0);
+
+            // Get a full bookmarks cursor.
+            Cursor bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarks();
+
+            // Move to the first bookmark.
+            bookmarksCursor.moveToFirst();
+
+            // Copy the data from the bookmarks cursor into the export database.
+            for (int i = 0; i < bookmarksCursor.getCount(); i++) {
+                // Extract the record from the cursor and store the data in a ContentValues.
+                ContentValues bookmarksContentValues = new ContentValues();
+                bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_NAME, bookmarksCursor.getString(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME)));
+                bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_URL, bookmarksCursor.getString(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_URL)));
+                bookmarksContentValues.put(BookmarksDatabaseHelper.PARENT_FOLDER, bookmarksCursor.getString(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.PARENT_FOLDER)));
+                bookmarksContentValues.put(BookmarksDatabaseHelper.DISPLAY_ORDER, bookmarksCursor.getInt(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.DISPLAY_ORDER)));
+                bookmarksContentValues.put(BookmarksDatabaseHelper.IS_FOLDER, bookmarksCursor.getInt(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.IS_FOLDER)));
+                bookmarksContentValues.put(BookmarksDatabaseHelper.FAVORITE_ICON, bookmarksCursor.getBlob(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.FAVORITE_ICON)));
+
+                // Insert the record into the temporary export database.
+                temporaryExportDatabase.insert(BookmarksDatabaseHelper.BOOKMARKS_TABLE, null, bookmarksContentValues);
 
-            // Delete the Shared Memory file if it exists.
-            if (shmFile.exists()) {
-                //noinspection ResultOfMethodCallIgnored
-                shmFile.delete();
+                // Advance to the next record.
+                bookmarksCursor.moveToNext();
             }
 
-            // Delete the Write Ahead Log file if it exists.
-            if (walFile.exists()) {
-                //noinspection ResultOfMethodCallIgnored
-                walFile.delete();
+            // Close the bookmarks database.
+            bookmarksCursor.close();
+            bookmarksDatabaseHelper.close();
+
+
+            // Create the temporary export database domains table.
+            temporaryExportDatabase.execSQL(DomainsDatabaseHelper.CREATE_DOMAINS_TABLE);
+
+            // Open the domains database.  The `0` specifies the database version, but that is ignored and set instead using a constant in `DomainsDatabaseHelper`.
+            DomainsDatabaseHelper domainsDatabaseHelper = new DomainsDatabaseHelper(context, null, null, 0);
+
+            // Get a full domains database cursor.
+            Cursor domainsCursor = domainsDatabaseHelper.getCompleteCursorOrderedByDomain();
+
+            // Move to the first domain.
+            domainsCursor.moveToFirst();
+
+            // Copy the data from the domains cursor into the export database.
+            for (int i = 0; i < domainsCursor.getCount(); i++) {
+                // Extract the record from the cursor and store the data in a ContentValues.
+                ContentValues domainsContentValues = new ContentValues();
+                domainsContentValues.put(DomainsDatabaseHelper.DOMAIN_NAME, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.DOMAIN_NAME)));
+                domainsContentValues.put(DomainsDatabaseHelper.ENABLE_JAVASCRIPT, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_JAVASCRIPT)));
+                domainsContentValues.put(DomainsDatabaseHelper.COOKIES, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.COOKIES)));
+                domainsContentValues.put(DomainsDatabaseHelper.ENABLE_DOM_STORAGE, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_DOM_STORAGE)));
+                domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FORM_DATA, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FORM_DATA)));
+                domainsContentValues.put(DomainsDatabaseHelper.ENABLE_EASYLIST, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_EASYLIST)));
+                domainsContentValues.put(DomainsDatabaseHelper.ENABLE_EASYPRIVACY, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_EASYPRIVACY)));
+                domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST)));
+                domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST)));
+                domainsContentValues.put(DomainsDatabaseHelper.ULTRALIST, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ULTRALIST)));
+                domainsContentValues.put(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY)));
+                domainsContentValues.put(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS)));
+                domainsContentValues.put(DomainsDatabaseHelper.USER_AGENT, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.USER_AGENT)));
+                domainsContentValues.put(DomainsDatabaseHelper.FONT_SIZE, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.FONT_SIZE)));
+                domainsContentValues.put(DomainsDatabaseHelper.SWIPE_TO_REFRESH, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SWIPE_TO_REFRESH)));
+                domainsContentValues.put(DomainsDatabaseHelper.WEBVIEW_THEME, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.WEBVIEW_THEME)));
+                domainsContentValues.put(DomainsDatabaseHelper.WIDE_VIEWPORT, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.WIDE_VIEWPORT)));
+                domainsContentValues.put(DomainsDatabaseHelper.DISPLAY_IMAGES, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.DISPLAY_IMAGES)));
+                domainsContentValues.put(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE)));
+                domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME)));
+                domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION)));
+                domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT)));
+                domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME)));
+                domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION)));
+                domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT)));
+                domainsContentValues.put(DomainsDatabaseHelper.SSL_START_DATE, domainsCursor.getLong(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_START_DATE)));
+                domainsContentValues.put(DomainsDatabaseHelper.SSL_END_DATE, domainsCursor.getLong(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_END_DATE)));
+                domainsContentValues.put(DomainsDatabaseHelper.PINNED_IP_ADDRESSES, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_IP_ADDRESSES)));
+                domainsContentValues.put(DomainsDatabaseHelper.IP_ADDRESSES, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.IP_ADDRESSES)));
+
+                // Insert the record into the temporary export database.
+                temporaryExportDatabase.insert(DomainsDatabaseHelper.DOMAINS_TABLE, null, domainsContentValues);
+
+                // Advance to the next record.
+                domainsCursor.moveToNext();
             }
 
-            // Delete the Journal file if it exists.
-            if (journalFile.exists()) {
-                //noinspection ResultOfMethodCallIgnored
-                journalFile.delete();
+            // Close the domains database.
+            domainsCursor.close();
+            domainsDatabaseHelper.close();
+
+
+            // Prepare the preferences table SQL creation string.
+            String CREATE_PREFERENCES_TABLE = "CREATE TABLE " + PREFERENCES_TABLE + " (" +
+                    _ID + " INTEGER PRIMARY KEY, " +
+                    JAVASCRIPT + " BOOLEAN, " +
+                    COOKIES + " BOOLEAN, " +
+                    DOM_STORAGE + " BOOLEAN, " +
+                    SAVE_FORM_DATA + " BOOLEAN, " +
+                    USER_AGENT + " TEXT, " +
+                    CUSTOM_USER_AGENT + " TEXT, " +
+                    INCOGNITO_MODE + " BOOLEAN, " +
+                    ALLOW_SCREENSHOTS + " BOOLEAN, " +
+                    EASYLIST + " BOOLEAN, " +
+                    EASYPRIVACY + " BOOLEAN, " +
+                    FANBOYS_ANNOYANCE_LIST + " BOOLEAN, " +
+                    FANBOYS_SOCIAL_BLOCKING_LIST + " BOOLEAN, " +
+                    ULTRALIST + " BOOLEAN, " +
+                    ULTRAPRIVACY + " BOOLEAN, " +
+                    BLOCK_ALL_THIRD_PARTY_REQUESTS + " BOOLEAN, " +
+                    GOOGLE_ANALYTICS + " BOOLEAN, " +
+                    FACEBOOK_CLICK_IDS + " BOOLEAN, " +
+                    TWITTER_AMP_REDIRECTS + " BOOLEAN, " +
+                    SEARCH + " TEXT, " +
+                    SEARCH_CUSTOM_URL + " TEXT, " +
+                    PROXY + " TEXT, " +
+                    PROXY_CUSTOM_URL + " TEXT, " +
+                    FULL_SCREEN_BROWSING_MODE + " BOOLEAN, " +
+                    HIDE_APP_BAR + " BOOLEAN, " +
+                    CLEAR_EVERYTHING + " BOOLEAN, " +
+                    CLEAR_COOKIES + " BOOLEAN, " +
+                    CLEAR_DOM_STORAGE + " BOOLEAN, " +
+                    CLEAR_FORM_DATA + " BOOLEAN, " +
+                    CLEAR_LOGCAT + " BOOLEAN, " +
+                    CLEAR_CACHE + " BOOLEAN, " +
+                    HOMEPAGE + " TEXT, " +
+                    FONT_SIZE + " TEXT, " +
+                    OPEN_INTENTS_IN_NEW_TAB + " BOOLEAN, " +
+                    SWIPE_TO_REFRESH + " BOOLEAN, " +
+                    DOWNLOAD_WITH_EXTERNAL_APP + " BOOLEAN, " +
+                    SCROLL_APP_BAR + " BOOLEAN, " +
+                    DISPLAY_ADDITIONAL_APP_BAR_ICONS + " BOOLEAN, " +
+                    APP_THEME + " TEXT, " +
+                    WEBVIEW_THEME + " TEXT, " +
+                    WIDE_VIEWPORT + " BOOLEAN, " +
+                    DISPLAY_WEBPAGE_IMAGES + " BOOLEAN)";
+
+            // Create the temporary export database preferences table.
+            temporaryExportDatabase.execSQL(CREATE_PREFERENCES_TABLE);
+
+            // Get a handle for the shared preference.
+            SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
+
+            // Create a ContentValues with the preferences information.
+            ContentValues preferencesContentValues = new ContentValues();
+            preferencesContentValues.put(JAVASCRIPT, sharedPreferences.getBoolean(JAVASCRIPT, false));
+            preferencesContentValues.put(COOKIES, sharedPreferences.getBoolean(COOKIES, false));
+            preferencesContentValues.put(DOM_STORAGE, sharedPreferences.getBoolean(DOM_STORAGE, false));
+            preferencesContentValues.put(SAVE_FORM_DATA, sharedPreferences.getBoolean(SAVE_FORM_DATA, false));  // Save form data can be removed once the minimum API >= 26.
+            preferencesContentValues.put(USER_AGENT, sharedPreferences.getString(USER_AGENT, context.getString(R.string.user_agent_default_value)));
+            preferencesContentValues.put(CUSTOM_USER_AGENT, sharedPreferences.getString(CUSTOM_USER_AGENT, context.getString(R.string.custom_user_agent_default_value)));
+            preferencesContentValues.put(INCOGNITO_MODE, sharedPreferences.getBoolean(INCOGNITO_MODE, false));
+            preferencesContentValues.put(ALLOW_SCREENSHOTS, sharedPreferences.getBoolean(ALLOW_SCREENSHOTS, false));
+            preferencesContentValues.put(EASYLIST, sharedPreferences.getBoolean(EASYLIST, true));
+            preferencesContentValues.put(EASYPRIVACY, sharedPreferences.getBoolean(EASYPRIVACY, true));
+            preferencesContentValues.put(FANBOYS_ANNOYANCE_LIST, sharedPreferences.getBoolean(FANBOYS_ANNOYANCE_LIST, true));
+            preferencesContentValues.put(FANBOYS_SOCIAL_BLOCKING_LIST, sharedPreferences.getBoolean(FANBOYS_SOCIAL_BLOCKING_LIST, true));
+            preferencesContentValues.put(ULTRALIST, sharedPreferences.getBoolean(ULTRALIST, true));
+            preferencesContentValues.put(ULTRAPRIVACY, sharedPreferences.getBoolean(ULTRAPRIVACY, true));
+            preferencesContentValues.put(BLOCK_ALL_THIRD_PARTY_REQUESTS, sharedPreferences.getBoolean(BLOCK_ALL_THIRD_PARTY_REQUESTS, false));
+            preferencesContentValues.put(GOOGLE_ANALYTICS, sharedPreferences.getBoolean(GOOGLE_ANALYTICS, true));
+            preferencesContentValues.put(FACEBOOK_CLICK_IDS, sharedPreferences.getBoolean(FACEBOOK_CLICK_IDS, true));
+            preferencesContentValues.put(TWITTER_AMP_REDIRECTS, sharedPreferences.getBoolean(TWITTER_AMP_REDIRECTS, true));
+            preferencesContentValues.put(SEARCH, sharedPreferences.getString(SEARCH, context.getString(R.string.search_default_value)));
+            preferencesContentValues.put(SEARCH_CUSTOM_URL, sharedPreferences.getString(SEARCH_CUSTOM_URL, context.getString(R.string.search_custom_url_default_value)));
+            preferencesContentValues.put(PROXY, sharedPreferences.getString(PROXY, context.getString(R.string.proxy_default_value)));
+            preferencesContentValues.put(PROXY_CUSTOM_URL, sharedPreferences.getString(PROXY_CUSTOM_URL, context.getString(R.string.proxy_custom_url_default_value)));
+            preferencesContentValues.put(FULL_SCREEN_BROWSING_MODE, sharedPreferences.getBoolean(FULL_SCREEN_BROWSING_MODE, false));
+            preferencesContentValues.put(HIDE_APP_BAR, sharedPreferences.getBoolean(HIDE_APP_BAR, true));
+            preferencesContentValues.put(CLEAR_EVERYTHING, sharedPreferences.getBoolean(CLEAR_EVERYTHING, true));
+            preferencesContentValues.put(CLEAR_COOKIES, sharedPreferences.getBoolean(CLEAR_COOKIES, true));
+            preferencesContentValues.put(CLEAR_DOM_STORAGE, sharedPreferences.getBoolean(CLEAR_DOM_STORAGE, true));
+            preferencesContentValues.put(CLEAR_FORM_DATA, sharedPreferences.getBoolean(CLEAR_FORM_DATA, true));  // Clear form data can be removed once the minimum API >= 26.
+            preferencesContentValues.put(CLEAR_LOGCAT, sharedPreferences.getBoolean(CLEAR_LOGCAT, true));
+            preferencesContentValues.put(CLEAR_CACHE, sharedPreferences.getBoolean(CLEAR_CACHE, true));
+            preferencesContentValues.put(HOMEPAGE, sharedPreferences.getString(HOMEPAGE, context.getString(R.string.homepage_default_value)));
+            preferencesContentValues.put(FONT_SIZE, sharedPreferences.getString(FONT_SIZE, context.getString(R.string.font_size_default_value)));
+            preferencesContentValues.put(OPEN_INTENTS_IN_NEW_TAB, sharedPreferences.getBoolean(OPEN_INTENTS_IN_NEW_TAB, true));
+            preferencesContentValues.put(SWIPE_TO_REFRESH, sharedPreferences.getBoolean(SWIPE_TO_REFRESH, true));
+            preferencesContentValues.put(DOWNLOAD_WITH_EXTERNAL_APP, sharedPreferences.getBoolean(DOWNLOAD_WITH_EXTERNAL_APP, false));
+            preferencesContentValues.put(SCROLL_APP_BAR, sharedPreferences.getBoolean(SCROLL_APP_BAR, true));
+            preferencesContentValues.put(DISPLAY_ADDITIONAL_APP_BAR_ICONS, sharedPreferences.getBoolean(DISPLAY_ADDITIONAL_APP_BAR_ICONS, false));
+            preferencesContentValues.put(APP_THEME, sharedPreferences.getString(APP_THEME, context.getString(R.string.app_theme_default_value)));
+            preferencesContentValues.put(WEBVIEW_THEME, sharedPreferences.getString(WEBVIEW_THEME, context.getString(R.string.webview_theme_default_value)));
+            preferencesContentValues.put(WIDE_VIEWPORT, sharedPreferences.getBoolean(WIDE_VIEWPORT, true));
+            preferencesContentValues.put(DISPLAY_WEBPAGE_IMAGES, sharedPreferences.getBoolean(DISPLAY_WEBPAGE_IMAGES, true));
+
+            // Insert the preferences into the temporary export database.
+            temporaryExportDatabase.insert(PREFERENCES_TABLE, null, preferencesContentValues);
+
+            // Close the temporary export database.
+            temporaryExportDatabase.close();
+
+
+            // Create the temporary export file input stream.
+            FileInputStream temporaryExportFileInputStream = new FileInputStream(temporaryExportFile);
+
+            // Create a byte array.
+            byte[] transferByteArray = new byte[1024];
+
+            // Create an integer to track the number of bytes read.
+            int bytesRead;
+
+            // Copy the temporary export file to the export file output stream.
+            while ((bytesRead = temporaryExportFileInputStream.read(transferByteArray)) > 0) {
+                exportFileOutputStream.write(transferByteArray, 0, bytesRead);
             }
 
-            // Delete the temporary import file.
-            //noinspection ResultOfMethodCallIgnored
-            temporaryImportFile.delete();
+            // Flush the export file output stream.
+            exportFileOutputStream.flush();
 
-            // Import successful.
-            return IMPORT_SUCCESSFUL;
+            // Close the file streams.
+            temporaryExportFileInputStream.close();
+            exportFileOutputStream.close();
+
+            // Delete the temporary export file database, journal, and other related auxiliary files.
+            SQLiteDatabase.deleteDatabase(temporaryExportFile);
+
+            // Export successful.
+            return EXPORT_SUCCESSFUL;
         } catch (Exception exception) {
-            // Return the import error.
+            // Return the export error.
             return exception.toString();
         }
     }
-}
+}
\ No newline at end of file