c1f0f26453f1809760d72bf31b12e574af5d40f2
[PrivacyBrowser.git] / app / src / main / java / com / stoutner / privacybrowser / helpers / ImportExportDatabaseHelper.java
1 /*
2  * Copyright © 2018-2019 Soren Stoutner <soren@stoutner.com>.
3  *
4  * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
5  *
6  * Privacy Browser is free software: you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation, either version 3 of the License, or
9  * (at your option) any later version.
10  *
11  * Privacy Browser is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with Privacy Browser.  If not, see <http://www.gnu.org/licenses/>.
18  */
19
20 package com.stoutner.privacybrowser.helpers;
21
22 import android.content.ContentValues;
23 import android.content.Context;
24 import android.content.SharedPreferences;
25 import android.database.Cursor;
26 import android.database.sqlite.SQLiteDatabase;
27 import android.preference.PreferenceManager;
28
29 import com.stoutner.privacybrowser.R;
30
31 import java.io.File;
32 import java.io.FileInputStream;
33 import java.io.FileOutputStream;
34 import java.io.InputStream;
35 import java.io.OutputStream;
36
37 public class ImportExportDatabaseHelper {
38     public static final String EXPORT_SUCCESSFUL = "Export Successful";
39     public static final String IMPORT_SUCCESSFUL = "Import Successful";
40
41     private static final int SCHEMA_VERSION = 6;
42     private static final String PREFERENCES_TABLE = "preferences";
43
44     // The preferences constants.
45     private static final String _ID = "_id";
46     private static final String JAVASCRIPT = "javascript";
47     private static final String FIRST_PARTY_COOKIES = "first_party_cookies";
48     private static final String THIRD_PARTY_COOKIES = "third_party_cookies";
49     private static final String DOM_STORAGE = "dom_storage";
50     private static final String SAVE_FORM_DATA = "save_form_data";
51     private static final String USER_AGENT = "user_agent";
52     private static final String CUSTOM_USER_AGENT = "custom_user_agent";
53     private static final String INCOGNITO_MODE = "incognito_mode";
54     private static final String DO_NOT_TRACK = "do_not_track";
55     private static final String ALLOW_SCREENSHOTS = "allow_screenshots";
56     private static final String EASYLIST = "easylist";
57     private static final String EASYPRIVACY = "easyprivacy";
58     private static final String FANBOYS_ANNOYANCE_LIST = "fanboys_annoyance_list";
59     private static final String FANBOYS_SOCIAL_BLOCKING_LIST = "fanboys_social_blocking_list";
60     private static final String ULTRAPRIVACY = "ultraprivacy";
61     private static final String BLOCK_ALL_THIRD_PARTY_REQUESTS = "block_all_third_party_requests";
62     private static final String PROXY_THROUGH_ORBOT = "proxy_through_orbot";
63     private static final String TOR_HOMEPAGE = "tor_homepage";
64     private static final String TOR_SEARCH = "tor_search";
65     private static final String TOR_SEARCH_CUSTOM_URL = "tor_search_custom_url";
66     private static final String SEARCH = "search";
67     private static final String SEARCH_CUSTOM_URL = "search_custom_url";
68     private static final String FULL_SCREEN_BROWSING_MODE = "full_screen_browsing_mode";
69     private static final String HIDE_APP_BAR = "hide_app_bar";
70     private static final String CLEAR_EVERYTHING = "clear_everything";
71     private static final String CLEAR_COOKIES = "clear_cookies";
72     private static final String CLEAR_DOM_STORAGE = "clear_dom_storage";
73     private static final String CLEAR_FORM_DATA = "clear_form_data";
74     private static final String CLEAR_CACHE = "clear_cache";
75     private static final String HOMEPAGE = "homepage";
76     private static final String FONT_SIZE = "font_size";
77     private static final String OPEN_INTENTS_IN_NEW_TAB = "open_intents_in_new_tab";
78     private static final String SWIPE_TO_REFRESH = "swipe_to_refresh";
79     private static final String SCROLL_APP_BAR = "scroll_app_bar";
80     private static final String DISPLAY_ADDITIONAL_APP_BAR_ICONS = "display_additional_app_bar_icons";
81     private static final String DOWNLOAD_WITH_EXTERNAL_APP = "download_with_external_app";
82     private static final String DARK_THEME = "dark_theme";
83     private static final String NIGHT_MODE = "night_mode";
84     private static final String DISPLAY_WEBPAGE_IMAGES = "display_webpage_images";
85
86     public String exportUnencrypted(File exportFile, Context context) {
87         try {
88             // Delete the current file if it exists.
89             if (exportFile.exists()) {
90                 //noinspection ResultOfMethodCallIgnored
91                 exportFile.delete();
92             }
93
94             // Create the export database.
95             SQLiteDatabase exportDatabase = SQLiteDatabase.openOrCreateDatabase(exportFile, null);
96
97             // Set the export database version number.
98             exportDatabase.setVersion(SCHEMA_VERSION);
99
100             // Create the export database domains table.
101             exportDatabase.execSQL(DomainsDatabaseHelper.CREATE_DOMAINS_TABLE);
102
103             // Open the domains database.  The `0` specifies the database version, but that is ignored and set instead using a constant in `DomainsDatabaseHelper`.
104             DomainsDatabaseHelper domainsDatabaseHelper = new DomainsDatabaseHelper(context, null, null, 0);
105
106             // Get a full domains database cursor.
107             Cursor domainsCursor = domainsDatabaseHelper.getCompleteCursorOrderedByDomain();
108
109             // Move to the first domain.
110             domainsCursor.moveToFirst();
111
112             // Copy the data from the domains cursor into the export database.
113             for (int i = 0; i < domainsCursor.getCount(); i++) {
114                 // Extract the record from the cursor and store the data in a ContentValues.
115                 ContentValues domainsContentValues = new ContentValues();
116                 domainsContentValues.put(DomainsDatabaseHelper.DOMAIN_NAME, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.DOMAIN_NAME)));
117                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_JAVASCRIPT, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_JAVASCRIPT)));
118                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FIRST_PARTY_COOKIES, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FIRST_PARTY_COOKIES)));
119                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_THIRD_PARTY_COOKIES, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_THIRD_PARTY_COOKIES)));
120                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_DOM_STORAGE, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_DOM_STORAGE)));
121                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FORM_DATA, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FORM_DATA)));
122                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_EASYLIST, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_EASYLIST)));
123                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_EASYPRIVACY, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_EASYPRIVACY)));
124                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST)));
125                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST)));
126                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY)));
127                 domainsContentValues.put(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS)));
128                 domainsContentValues.put(DomainsDatabaseHelper.USER_AGENT, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.USER_AGENT)));
129                 domainsContentValues.put(DomainsDatabaseHelper.FONT_SIZE, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.FONT_SIZE)));
130                 domainsContentValues.put(DomainsDatabaseHelper.SWIPE_TO_REFRESH, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SWIPE_TO_REFRESH)));
131                 domainsContentValues.put(DomainsDatabaseHelper.NIGHT_MODE, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.NIGHT_MODE)));
132                 domainsContentValues.put(DomainsDatabaseHelper.DISPLAY_IMAGES, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.DISPLAY_IMAGES)));
133                 domainsContentValues.put(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE)));
134                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME)));
135                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION)));
136                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT)));
137                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME)));
138                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION)));
139                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT)));
140                 domainsContentValues.put(DomainsDatabaseHelper.SSL_START_DATE, domainsCursor.getLong(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_START_DATE)));
141                 domainsContentValues.put(DomainsDatabaseHelper.SSL_END_DATE, domainsCursor.getLong(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_END_DATE)));
142                 domainsContentValues.put(DomainsDatabaseHelper.PINNED_IP_ADDRESSES, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_IP_ADDRESSES)));
143                 domainsContentValues.put(DomainsDatabaseHelper.IP_ADDRESSES, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.IP_ADDRESSES)));
144
145                 // Insert the record into the export database.
146                 exportDatabase.insert(DomainsDatabaseHelper.DOMAINS_TABLE, null, domainsContentValues);
147
148                 // Advance to the next record.
149                 domainsCursor.moveToNext();
150             }
151
152             // Close the domains database.
153             domainsCursor.close();
154             domainsDatabaseHelper.close();
155
156
157             // Create the export database bookmarks table.
158             exportDatabase.execSQL(BookmarksDatabaseHelper.CREATE_BOOKMARKS_TABLE);
159
160             // Open the bookmarks database.  The `0` specifies the database version, but that is ignored and set instead using a constant in `BookmarksDatabaseHelper`.
161             BookmarksDatabaseHelper bookmarksDatabaseHelper = new BookmarksDatabaseHelper(context, null, null, 0);
162
163             // Get a full bookmarks cursor.
164             Cursor bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarks();
165
166             // Move to the first bookmark.
167             bookmarksCursor.moveToFirst();
168
169             // Copy the data from the bookmarks cursor into the export database.
170             for (int i = 0; i < bookmarksCursor.getCount(); i++) {
171                 // Extract the record from the cursor and store the data in a ContentValues.
172                 ContentValues bookmarksContentValues = new ContentValues();
173                 bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_NAME, bookmarksCursor.getString(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME)));
174                 bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_URL, bookmarksCursor.getString(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_URL)));
175                 bookmarksContentValues.put(BookmarksDatabaseHelper.PARENT_FOLDER, bookmarksCursor.getString(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.PARENT_FOLDER)));
176                 bookmarksContentValues.put(BookmarksDatabaseHelper.DISPLAY_ORDER, bookmarksCursor.getInt(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.DISPLAY_ORDER)));
177                 bookmarksContentValues.put(BookmarksDatabaseHelper.IS_FOLDER, bookmarksCursor.getInt(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.IS_FOLDER)));
178                 bookmarksContentValues.put(BookmarksDatabaseHelper.FAVORITE_ICON, bookmarksCursor.getBlob(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.FAVORITE_ICON)));
179
180                 // Insert the record into the export database.
181                 exportDatabase.insert(BookmarksDatabaseHelper.BOOKMARKS_TABLE, null, bookmarksContentValues);
182
183                 // Advance to the next record.
184                 bookmarksCursor.moveToNext();
185             }
186
187             // Close the bookmarks database.
188             bookmarksCursor.close();
189             bookmarksDatabaseHelper.close();
190
191
192             // Prepare the preferences table SQL creation string.
193             String CREATE_PREFERENCES_TABLE = "CREATE TABLE " + PREFERENCES_TABLE + " (" +
194                     _ID + " INTEGER PRIMARY KEY, " +
195                     JAVASCRIPT + " BOOLEAN, " +
196                     FIRST_PARTY_COOKIES + " BOOLEAN, " +
197                     THIRD_PARTY_COOKIES + " BOOLEAN, " +
198                     DOM_STORAGE + " BOOLEAN, " +
199                     SAVE_FORM_DATA + " BOOLEAN, " +
200                     USER_AGENT + " TEXT, " +
201                     CUSTOM_USER_AGENT + " TEXT, " +
202                     INCOGNITO_MODE + " BOOLEAN, " +
203                     DO_NOT_TRACK + " BOOLEAN, " +
204                     ALLOW_SCREENSHOTS + " BOOLEAN, " +
205                     EASYLIST + " BOOLEAN, " +
206                     EASYPRIVACY + " BOOLEAN, " +
207                     FANBOYS_ANNOYANCE_LIST + " BOOLEAN, " +
208                     FANBOYS_SOCIAL_BLOCKING_LIST + " BOOLEAN, " +
209                     ULTRAPRIVACY + " BOOLEAN, " +
210                     BLOCK_ALL_THIRD_PARTY_REQUESTS + " BOOLEAN, " +
211                     PROXY_THROUGH_ORBOT + " BOOLEAN, " +
212                     TOR_HOMEPAGE + " TEXT, " +
213                     TOR_SEARCH + " TEXT, " +
214                     TOR_SEARCH_CUSTOM_URL + " TEXT, " +
215                     SEARCH + " TEXT, " +
216                     SEARCH_CUSTOM_URL + " TEXT, " +
217                     FULL_SCREEN_BROWSING_MODE + " BOOLEAN, " +
218                     HIDE_APP_BAR + " BOOLEAN, " +
219                     CLEAR_EVERYTHING + " BOOLEAN, " +
220                     CLEAR_COOKIES + " BOOLEAN, " +
221                     CLEAR_DOM_STORAGE + " BOOLEAN, " +
222                     CLEAR_FORM_DATA + " BOOLEAN, " +
223                     CLEAR_CACHE + " BOOLEAN, " +
224                     HOMEPAGE + " TEXT, " +
225                     FONT_SIZE + " TEXT, " +
226                     OPEN_INTENTS_IN_NEW_TAB + " BOOLEAN, " +
227                     SWIPE_TO_REFRESH + " BOOLEAN, " +
228                     SCROLL_APP_BAR + " BOOLEAN, " +
229                     DISPLAY_ADDITIONAL_APP_BAR_ICONS + " BOOLEAN, " +
230                     DOWNLOAD_WITH_EXTERNAL_APP + " BOOLEAN, " +
231                     DARK_THEME + " BOOLEAN, " +
232                     NIGHT_MODE + " BOOLEAN, " +
233                     DISPLAY_WEBPAGE_IMAGES + " BOOLEAN)";
234
235             // Create the export database preferences table.
236             exportDatabase.execSQL(CREATE_PREFERENCES_TABLE);
237
238             // Get a handle for the shared preference.
239             SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
240
241             // Create a ContentValues with the preferences information.
242             ContentValues preferencesContentValues = new ContentValues();
243             preferencesContentValues.put(JAVASCRIPT, sharedPreferences.getBoolean(JAVASCRIPT, false));
244             preferencesContentValues.put(FIRST_PARTY_COOKIES, sharedPreferences.getBoolean(FIRST_PARTY_COOKIES, false));
245             preferencesContentValues.put(THIRD_PARTY_COOKIES, sharedPreferences.getBoolean(THIRD_PARTY_COOKIES, false));
246             preferencesContentValues.put(DOM_STORAGE, sharedPreferences.getBoolean(DOM_STORAGE, false));
247             preferencesContentValues.put(SAVE_FORM_DATA, sharedPreferences.getBoolean(SAVE_FORM_DATA, false));  // Save form data can be removed once the minimum API >= 26.
248             preferencesContentValues.put(USER_AGENT, sharedPreferences.getString(USER_AGENT, context.getString(R.string.user_agent_default_value)));
249             preferencesContentValues.put(CUSTOM_USER_AGENT, sharedPreferences.getString(CUSTOM_USER_AGENT, context.getString(R.string.custom_user_agent_default_value)));
250             preferencesContentValues.put(INCOGNITO_MODE, sharedPreferences.getBoolean(INCOGNITO_MODE, false));
251             preferencesContentValues.put(DO_NOT_TRACK, sharedPreferences.getBoolean(DO_NOT_TRACK, false));
252             preferencesContentValues.put(ALLOW_SCREENSHOTS, sharedPreferences.getBoolean(ALLOW_SCREENSHOTS, false));
253             preferencesContentValues.put(EASYLIST, sharedPreferences.getBoolean(EASYLIST, true));
254             preferencesContentValues.put(EASYPRIVACY, sharedPreferences.getBoolean(EASYPRIVACY, true));
255             preferencesContentValues.put(FANBOYS_ANNOYANCE_LIST, sharedPreferences.getBoolean(FANBOYS_ANNOYANCE_LIST, true));
256             preferencesContentValues.put(FANBOYS_SOCIAL_BLOCKING_LIST, sharedPreferences.getBoolean(FANBOYS_SOCIAL_BLOCKING_LIST, true));
257             preferencesContentValues.put(ULTRAPRIVACY, sharedPreferences.getBoolean(ULTRAPRIVACY, true));
258             preferencesContentValues.put(BLOCK_ALL_THIRD_PARTY_REQUESTS, sharedPreferences.getBoolean(BLOCK_ALL_THIRD_PARTY_REQUESTS, false));
259             preferencesContentValues.put(PROXY_THROUGH_ORBOT, sharedPreferences.getBoolean(PROXY_THROUGH_ORBOT, false));
260             preferencesContentValues.put(TOR_HOMEPAGE, sharedPreferences.getString(TOR_HOMEPAGE, context.getString(R.string.tor_homepage_default_value)));
261             preferencesContentValues.put(TOR_SEARCH, sharedPreferences.getString(TOR_SEARCH, context.getString(R.string.tor_search_default_value)));
262             preferencesContentValues.put(TOR_SEARCH_CUSTOM_URL, sharedPreferences.getString(TOR_SEARCH_CUSTOM_URL, context.getString(R.string.tor_search_custom_url_default_value)));
263             preferencesContentValues.put(SEARCH, sharedPreferences.getString(SEARCH, context.getString(R.string.search_default_value)));
264             preferencesContentValues.put(SEARCH_CUSTOM_URL, sharedPreferences.getString(SEARCH_CUSTOM_URL, context.getString(R.string.search_custom_url_default_value)));
265             preferencesContentValues.put(FULL_SCREEN_BROWSING_MODE, sharedPreferences.getBoolean(FULL_SCREEN_BROWSING_MODE, false));
266             preferencesContentValues.put(HIDE_APP_BAR, sharedPreferences.getBoolean(HIDE_APP_BAR, true));
267             preferencesContentValues.put(CLEAR_EVERYTHING, sharedPreferences.getBoolean(CLEAR_EVERYTHING, true));
268             preferencesContentValues.put(CLEAR_COOKIES, sharedPreferences.getBoolean(CLEAR_COOKIES, true));
269             preferencesContentValues.put(CLEAR_DOM_STORAGE, sharedPreferences.getBoolean(CLEAR_DOM_STORAGE, true));
270             preferencesContentValues.put(CLEAR_FORM_DATA, sharedPreferences.getBoolean(CLEAR_FORM_DATA, true));  // Clear form data can be removed once the minimum API >= 26.
271             preferencesContentValues.put(CLEAR_CACHE, sharedPreferences.getBoolean(CLEAR_CACHE, true));
272             preferencesContentValues.put(HOMEPAGE, sharedPreferences.getString(HOMEPAGE, context.getString(R.string.homepage_default_value)));
273             preferencesContentValues.put(FONT_SIZE, sharedPreferences.getString(FONT_SIZE, context.getString(R.string.font_size_default_value)));
274             preferencesContentValues.put(OPEN_INTENTS_IN_NEW_TAB, sharedPreferences.getBoolean(OPEN_INTENTS_IN_NEW_TAB, true));
275             preferencesContentValues.put(SWIPE_TO_REFRESH, sharedPreferences.getBoolean(SWIPE_TO_REFRESH, true));
276             preferencesContentValues.put(SCROLL_APP_BAR, sharedPreferences.getBoolean(SCROLL_APP_BAR, true));
277             preferencesContentValues.put(DISPLAY_ADDITIONAL_APP_BAR_ICONS, sharedPreferences.getBoolean(DISPLAY_ADDITIONAL_APP_BAR_ICONS, false));
278             preferencesContentValues.put(DOWNLOAD_WITH_EXTERNAL_APP, sharedPreferences.getBoolean(DOWNLOAD_WITH_EXTERNAL_APP, false));
279             preferencesContentValues.put(DARK_THEME, sharedPreferences.getBoolean(DARK_THEME, false));
280             preferencesContentValues.put(NIGHT_MODE, sharedPreferences.getBoolean(NIGHT_MODE, false));
281             preferencesContentValues.put(DISPLAY_WEBPAGE_IMAGES, sharedPreferences.getBoolean(DISPLAY_WEBPAGE_IMAGES, true));
282
283             // Insert the preferences into the export database.
284             exportDatabase.insert(PREFERENCES_TABLE, null, preferencesContentValues);
285
286             // Close the export database.
287             exportDatabase.close();
288
289             // Convert the database file to a string.
290             String exportFileString = exportFile.toString();
291
292             // Create strings for the temporary database files.
293             String journalFileString = exportFileString + "-journal";
294
295             // Get `Files` for the temporary database files.
296             File journalFile = new File(journalFileString);
297
298             // Delete the Journal file if it exists.
299             if (journalFile.exists()) {
300                 //noinspection ResultOfMethodCallIgnored
301                 journalFile.delete();
302             }
303
304             // Export successful.
305             return EXPORT_SUCCESSFUL;
306         } catch (Exception exception) {
307             // Return the export error.
308             return exception.toString();
309         }
310     }
311
312     public String importUnencrypted(File importFile, Context context){
313         try {
314             // Create a temporary import file string.
315             String temporaryImportFileString = context.getCacheDir() + "/" + "temporary_import_file";
316
317             // Get a handle for a temporary import file.
318             File temporaryImportFile = new File(temporaryImportFileString);
319
320             // Delete the temporary import file if it already exists.
321             if (temporaryImportFile.exists()) {
322                 //noinspection ResultOfMethodCallIgnored
323                 temporaryImportFile.delete();
324             }
325
326             // Create input and output streams.
327             InputStream importFileInputStream = new FileInputStream(importFile);
328             OutputStream temporaryImportFileOutputStream = new FileOutputStream(temporaryImportFile);
329
330             // Create a byte array.
331             byte[] transferByteArray = new byte[1024];
332
333             // Create an integer to track the number of bytes read.
334             int bytesRead;
335
336             // Copy the import file to the temporary import file.  Once the minimum API >= 26 `Files.copy` can be used instead.
337             while ((bytesRead = importFileInputStream.read(transferByteArray)) > 0) {
338                 temporaryImportFileOutputStream.write(transferByteArray, 0, bytesRead);
339             }
340
341             // Close the file streams.
342             importFileInputStream.close();
343             temporaryImportFileOutputStream.close();
344
345
346             // Get a handle for the shared preference.
347             SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
348
349             // Open the import database.  Once the minimum API >= 27 the file can be opened directly without using the string.
350             SQLiteDatabase importDatabase = SQLiteDatabase.openDatabase(temporaryImportFileString, null, SQLiteDatabase.OPEN_READWRITE);
351
352             // Get the database version.
353             int importDatabaseVersion = importDatabase.getVersion();
354
355             // Upgrade the database if needed.
356             if (importDatabaseVersion < SCHEMA_VERSION) {
357                 switch (importDatabaseVersion){
358                     // Upgrade from schema version 1.
359                     case 1:
360                         // Add the download with external app preference.
361                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + DOWNLOAD_WITH_EXTERNAL_APP + " BOOLEAN");
362
363                         // Get the current setting for downloading with an external app.
364                         boolean downloadWithExternalApp = sharedPreferences.getBoolean(DOWNLOAD_WITH_EXTERNAL_APP, false);
365
366                         // Set the download with external app preference to the current value.
367                         if (downloadWithExternalApp) {
368                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + DOWNLOAD_WITH_EXTERNAL_APP + " = " + 1);
369                         } else {
370                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + DOWNLOAD_WITH_EXTERNAL_APP + " = " + 0);
371                         }
372
373                     // Upgrade from schema version 2.
374                     case 2:
375                         // 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
376                         // https://developer.android.com/reference/android/database/sqlite/package-summary
377                         // 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.
378
379                         // Get a cursor with the current `default_font_size` value.
380                         Cursor importDatabasePreferenceCursor = importDatabase.rawQuery("SELECT default_font_size FROM " + PREFERENCES_TABLE, null);
381
382                         // Move to the beginning fo the cursor.
383                         importDatabasePreferenceCursor.moveToFirst();
384
385                         // Get the current value in `default_font_size`.
386                         String fontSize = importDatabasePreferenceCursor.getString(importDatabasePreferenceCursor.getColumnIndex("default_font_size"));
387
388                         // Close the cursor.
389                         importDatabasePreferenceCursor.close();
390
391                         // Create a new column named `font_size`.
392                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + FONT_SIZE + " TEXT");
393
394                         // Place the font size string in the new column.
395                         importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + FONT_SIZE + " = " + fontSize);
396
397                     // Upgrade from schema version 3.
398                     case 3:
399                         // Add the Pinned IP Addresses columns to the domains table.
400                         importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.PINNED_IP_ADDRESSES + " BOOLEAN");
401                         importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.IP_ADDRESSES + " TEXT");
402
403                     // Upgrade from schema version 4.
404                     case 4:
405                         // Add the hide and scroll app bar preferences.
406                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + HIDE_APP_BAR + " BOOLEAN");
407                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + SCROLL_APP_BAR + " BOOLEAN");
408
409                         // Get the current hide and scroll app bar settings.
410                         boolean hideAppBar = sharedPreferences.getBoolean(HIDE_APP_BAR, true);
411                         boolean scrollAppBar = sharedPreferences.getBoolean(SCROLL_APP_BAR, true);
412
413                         // Populate the database with the current values.
414                         if (hideAppBar) {
415                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + HIDE_APP_BAR + " = " + 1);
416                         } else {
417                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + HIDE_APP_BAR + " = " + 0);
418                         }
419
420                         if (scrollAppBar) {
421                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + SCROLL_APP_BAR + " = " + 1);
422                         } else {
423                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + SCROLL_APP_BAR + " = " + 0);
424                         }
425
426                     // Upgrade from schema version 5.
427                     case 5:
428                         // Add the open intents in new tab preference.
429                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + OPEN_INTENTS_IN_NEW_TAB + " BOOLEAN");
430
431                         // Get the current open intents in new tab setting.
432                         boolean openIntentsInNewTab = sharedPreferences.getBoolean(OPEN_INTENTS_IN_NEW_TAB, true);
433
434                         // Populate the database with the current value.
435                         if (openIntentsInNewTab) {
436                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + OPEN_INTENTS_IN_NEW_TAB + " = " + 1);
437                         } else {
438                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + OPEN_INTENTS_IN_NEW_TAB + " = " + 0);
439                         }
440                 }
441             }
442
443             // Get a cursor for the domains table.
444             Cursor importDomainsCursor = importDatabase.rawQuery("SELECT * FROM " + DomainsDatabaseHelper.DOMAINS_TABLE + " ORDER BY " + DomainsDatabaseHelper.DOMAIN_NAME + " ASC", null);
445
446             // Delete the current domains database.
447             context.deleteDatabase(DomainsDatabaseHelper.DOMAINS_DATABASE);
448
449             // Create a new domains database.  The `0` specifies the database version, but that is ignored and set instead using a constant in `DomainsDatabaseHelper`.
450             DomainsDatabaseHelper domainsDatabaseHelper = new DomainsDatabaseHelper(context, null, null, 0);
451
452             // Move to the first domain.
453             importDomainsCursor.moveToFirst();
454
455             // Copy the data from the import domains cursor into the domains database.
456             for (int i = 0; i < importDomainsCursor.getCount(); i++) {
457                 // Extract the record from the cursor and store the data in a ContentValues.
458                 ContentValues domainsContentValues = new ContentValues();
459                 domainsContentValues.put(DomainsDatabaseHelper.DOMAIN_NAME, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.DOMAIN_NAME)));
460                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_JAVASCRIPT, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_JAVASCRIPT)));
461                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FIRST_PARTY_COOKIES, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FIRST_PARTY_COOKIES)));
462                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_THIRD_PARTY_COOKIES, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_THIRD_PARTY_COOKIES)));
463                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_DOM_STORAGE, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_DOM_STORAGE)));
464                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FORM_DATA, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FORM_DATA)));
465                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_EASYLIST, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_EASYLIST)));
466                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_EASYPRIVACY, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_EASYPRIVACY)));
467                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST,
468                         importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST)));
469                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST,
470                         importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST)));
471                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY)));
472                 domainsContentValues.put(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS,
473                         importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS)));
474                 domainsContentValues.put(DomainsDatabaseHelper.USER_AGENT, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.USER_AGENT)));
475                 domainsContentValues.put(DomainsDatabaseHelper.FONT_SIZE, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.FONT_SIZE)));
476                 domainsContentValues.put(DomainsDatabaseHelper.SWIPE_TO_REFRESH, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SWIPE_TO_REFRESH)));
477                 domainsContentValues.put(DomainsDatabaseHelper.NIGHT_MODE, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.NIGHT_MODE)));
478                 domainsContentValues.put(DomainsDatabaseHelper.DISPLAY_IMAGES, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.DISPLAY_IMAGES)));
479                 domainsContentValues.put(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE)));
480                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME)));
481                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION)));
482                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT,
483                         importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT)));
484                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME)));
485                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION)));
486                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT,
487                         importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT)));
488                 domainsContentValues.put(DomainsDatabaseHelper.SSL_START_DATE, importDomainsCursor.getLong(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_START_DATE)));
489                 domainsContentValues.put(DomainsDatabaseHelper.SSL_END_DATE, importDomainsCursor.getLong(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_END_DATE)));
490                 domainsContentValues.put(DomainsDatabaseHelper.PINNED_IP_ADDRESSES, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_IP_ADDRESSES)));
491                 domainsContentValues.put(DomainsDatabaseHelper.IP_ADDRESSES, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.IP_ADDRESSES)));
492
493                 // Insert the record into the export database.
494                 domainsDatabaseHelper.addDomain(domainsContentValues);
495
496                 // Advance to the next record.
497                 importDomainsCursor.moveToNext();
498             }
499
500             // Close the domains cursor.
501             importDomainsCursor.close();
502
503             // Close the domains database.
504             domainsDatabaseHelper.close();
505
506
507             // Get a cursor for the bookmarks table.
508             Cursor importBookmarksCursor = importDatabase.rawQuery("SELECT * FROM " + BookmarksDatabaseHelper.BOOKMARKS_TABLE, null);
509
510             // Delete the current bookmarks database.
511             context.deleteDatabase(BookmarksDatabaseHelper.BOOKMARKS_DATABASE);
512
513             // Create a new bookmarks database.  The `0` specifies the database version, but that is ignored and set instead using a constant in `BookmarksDatabaseHelper`.
514             BookmarksDatabaseHelper bookmarksDatabaseHelper = new BookmarksDatabaseHelper(context, null, null, 0);
515
516             // Move to the first bookmark.
517             importBookmarksCursor.moveToFirst();
518
519             // Copy the data from the import bookmarks cursor into the bookmarks database.
520             for (int i = 0; i < importBookmarksCursor.getCount(); i++) {
521                 // Extract the record from the cursor and store the data in a ContentValues.
522                 ContentValues bookmarksContentValues = new ContentValues();
523                 bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_NAME, importBookmarksCursor.getString(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME)));
524                 bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_URL, importBookmarksCursor.getString(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_URL)));
525                 bookmarksContentValues.put(BookmarksDatabaseHelper.PARENT_FOLDER, importBookmarksCursor.getString(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.PARENT_FOLDER)));
526                 bookmarksContentValues.put(BookmarksDatabaseHelper.DISPLAY_ORDER, importBookmarksCursor.getInt(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.DISPLAY_ORDER)));
527                 bookmarksContentValues.put(BookmarksDatabaseHelper.IS_FOLDER, importBookmarksCursor.getInt(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.IS_FOLDER)));
528                 bookmarksContentValues.put(BookmarksDatabaseHelper.FAVORITE_ICON, importBookmarksCursor.getBlob(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.FAVORITE_ICON)));
529
530                 // Insert the record into the export database.
531                 bookmarksDatabaseHelper.createBookmark(bookmarksContentValues);
532
533                 // Advance to the next record.
534                 importBookmarksCursor.moveToNext();
535             }
536
537             // Close the bookmarks cursor.
538             importBookmarksCursor.close();
539
540             // Close the bookmarks database.
541             bookmarksDatabaseHelper.close();
542
543
544             // Get a cursor for the bookmarks table.
545             Cursor importPreferencesCursor = importDatabase.rawQuery("SELECT * FROM " + PREFERENCES_TABLE, null);
546
547             // Move to the first preference.
548             importPreferencesCursor.moveToFirst();
549
550             // Import the preference data.
551             sharedPreferences.edit()
552                     .putBoolean(JAVASCRIPT, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(JAVASCRIPT)) == 1)
553                     .putBoolean(FIRST_PARTY_COOKIES, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(FIRST_PARTY_COOKIES)) == 1)
554                     .putBoolean(THIRD_PARTY_COOKIES, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(THIRD_PARTY_COOKIES)) == 1)
555                     .putBoolean(DOM_STORAGE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(DOM_STORAGE)) == 1)
556                     // Save form data can be removed once the minimum API >= 26.
557                     .putBoolean(SAVE_FORM_DATA, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(SAVE_FORM_DATA)) == 1)
558                     .putString(USER_AGENT, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(USER_AGENT)))
559                     .putString(CUSTOM_USER_AGENT, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(CUSTOM_USER_AGENT)))
560                     .putBoolean(INCOGNITO_MODE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(INCOGNITO_MODE)) == 1)
561                     .putBoolean(DO_NOT_TRACK, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(DO_NOT_TRACK)) == 1)
562                     .putBoolean(ALLOW_SCREENSHOTS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(ALLOW_SCREENSHOTS)) == 1)
563                     .putBoolean(EASYLIST, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(EASYLIST)) == 1)
564                     .putBoolean(EASYPRIVACY, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(EASYPRIVACY)) == 1)
565                     .putBoolean(FANBOYS_ANNOYANCE_LIST, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(FANBOYS_ANNOYANCE_LIST)) == 1)
566                     .putBoolean(FANBOYS_SOCIAL_BLOCKING_LIST, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(FANBOYS_SOCIAL_BLOCKING_LIST)) == 1)
567                     .putBoolean(ULTRAPRIVACY, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(ULTRAPRIVACY)) == 1)
568                     .putBoolean(BLOCK_ALL_THIRD_PARTY_REQUESTS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(BLOCK_ALL_THIRD_PARTY_REQUESTS)) == 1)
569                     .putBoolean(PROXY_THROUGH_ORBOT, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(PROXY_THROUGH_ORBOT)) == 1)
570                     .putString(TOR_HOMEPAGE, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(TOR_HOMEPAGE)))
571                     .putString(TOR_SEARCH, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(TOR_SEARCH)))
572                     .putString(TOR_SEARCH_CUSTOM_URL, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(TOR_SEARCH_CUSTOM_URL)))
573                     .putString(SEARCH, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(SEARCH)))
574                     .putString(SEARCH_CUSTOM_URL, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(SEARCH_CUSTOM_URL)))
575                     .putBoolean(FULL_SCREEN_BROWSING_MODE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(FULL_SCREEN_BROWSING_MODE)) == 1)
576                     .putBoolean(HIDE_APP_BAR, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(HIDE_APP_BAR)) == 1)
577                     .putBoolean(CLEAR_EVERYTHING, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_EVERYTHING)) == 1)
578                     .putBoolean(CLEAR_COOKIES, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_COOKIES)) == 1)
579                     .putBoolean(CLEAR_DOM_STORAGE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_DOM_STORAGE)) == 1)
580                     // Clear form data can be removed once the minimum API >= 26.
581                     .putBoolean(CLEAR_FORM_DATA, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_FORM_DATA)) == 1)
582                     .putBoolean(CLEAR_CACHE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_CACHE)) == 1)
583                     .putString(HOMEPAGE, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(HOMEPAGE)))
584                     .putString(FONT_SIZE, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(FONT_SIZE)))
585                     .putBoolean(OPEN_INTENTS_IN_NEW_TAB, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(OPEN_INTENTS_IN_NEW_TAB)) == 1)
586                     .putBoolean(SWIPE_TO_REFRESH, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(SWIPE_TO_REFRESH)) == 1)
587                     .putBoolean(SCROLL_APP_BAR, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(SCROLL_APP_BAR)) == 1)
588                     .putBoolean(DISPLAY_ADDITIONAL_APP_BAR_ICONS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(DISPLAY_ADDITIONAL_APP_BAR_ICONS)) == 1)
589                     .putBoolean(DOWNLOAD_WITH_EXTERNAL_APP, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(DOWNLOAD_WITH_EXTERNAL_APP)) == 1)
590                     .putBoolean(DARK_THEME, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(DARK_THEME)) == 1)
591                     .putBoolean(NIGHT_MODE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(NIGHT_MODE)) == 1)
592                     .putBoolean(DISPLAY_WEBPAGE_IMAGES, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(DISPLAY_WEBPAGE_IMAGES)) == 1)
593                     .apply();
594
595             // Close the preferences cursor.
596             importPreferencesCursor.close();
597
598
599             // Close the import database.
600             importDatabase.close();
601
602             // Create strings for the temporary database files.
603             String shmFileString = temporaryImportFileString + "-shm";
604             String walFileString = temporaryImportFileString + "-wal";
605             String journalFileString = temporaryImportFileString + "-journal";
606
607             // Get `Files` for the temporary database files.
608             File shmFile = new File(shmFileString);
609             File walFile = new File(walFileString);
610             File journalFile = new File(journalFileString);
611
612             // Delete the Shared Memory file if it exists.
613             if (shmFile.exists()) {
614                 //noinspection ResultOfMethodCallIgnored
615                 shmFile.delete();
616             }
617
618             // Delete the Write Ahead Log file if it exists.
619             if (walFile.exists()) {
620                 //noinspection ResultOfMethodCallIgnored
621                 walFile.delete();
622             }
623
624             // Delete the Journal file if it exists.
625             if (journalFile.exists()) {
626                 //noinspection ResultOfMethodCallIgnored
627                 journalFile.delete();
628             }
629
630             // Delete the temporary import file.
631             //noinspection ResultOfMethodCallIgnored
632             temporaryImportFile.delete();
633
634             // Import successful.
635             return IMPORT_SUCCESSFUL;
636         } catch (Exception exception) {
637             // Return the import error.
638             return exception.toString();
639         }
640     }
641 }