6815258aab86091f851cc48d09c304da621b5ae8
[PrivacyBrowser.git] / app / src / main / java / com / stoutner / privacybrowser / helpers / ImportExportDatabaseHelper.java
1 /*
2  * Copyright © 2018-2020 Soren Stoutner <soren@stoutner.com>.
3  *
4  * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
5  *
6  * Privacy Browser is free software: you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation, either version 3 of the License, or
9  * (at your option) any later version.
10  *
11  * Privacy Browser is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with Privacy Browser.  If not, see <http://www.gnu.org/licenses/>.
18  */
19
20 package com.stoutner.privacybrowser.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.DatabaseUtils;
27 import android.database.sqlite.SQLiteDatabase;
28 import android.preference.PreferenceManager;
29
30 import com.stoutner.privacybrowser.R;
31
32 import java.io.File;
33 import java.io.FileInputStream;
34 import java.io.FileOutputStream;
35 import java.io.InputStream;
36 import java.io.OutputStream;
37
38 public class ImportExportDatabaseHelper {
39     public static final String EXPORT_SUCCESSFUL = "Export Successful";
40     public static final String IMPORT_SUCCESSFUL = "Import Successful";
41
42     private static final int SCHEMA_VERSION = 11;
43     private static final String PREFERENCES_TABLE = "preferences";
44
45     // The preferences constants.
46     private static final String _ID = "_id";
47     private static final String JAVASCRIPT = "javascript";
48     private static final String FIRST_PARTY_COOKIES = "first_party_cookies";
49     private static final String THIRD_PARTY_COOKIES = "third_party_cookies";
50     private static final String DOM_STORAGE = "dom_storage";
51     private static final String SAVE_FORM_DATA = "save_form_data";
52     private static final String USER_AGENT = "user_agent";
53     private static final String CUSTOM_USER_AGENT = "custom_user_agent";
54     private static final String INCOGNITO_MODE = "incognito_mode";
55     private static final String DO_NOT_TRACK = "do_not_track";
56     private static final String ALLOW_SCREENSHOTS = "allow_screenshots";
57     private static final String EASYLIST = "easylist";
58     private static final String EASYPRIVACY = "easyprivacy";
59     private static final String FANBOYS_ANNOYANCE_LIST = "fanboys_annoyance_list";
60     private static final String FANBOYS_SOCIAL_BLOCKING_LIST = "fanboys_social_blocking_list";
61     private static final String ULTRALIST = "ultralist";
62     private static final String ULTRAPRIVACY = "ultraprivacy";
63     private static final String BLOCK_ALL_THIRD_PARTY_REQUESTS = "block_all_third_party_requests";
64     private static final String GOOGLE_ANALYTICS = "google_analytics";
65     private static final String FACEBOOK_CLICK_IDS = "facebook_click_ids";
66     private static final String TWITTER_AMP_REDIRECTS = "twitter_amp_redirects";
67     private static final String SEARCH = "search";
68     private static final String SEARCH_CUSTOM_URL = "search_custom_url";
69     private static final String PROXY = "proxy";
70     private static final String PROXY_CUSTOM_URL = "proxy_custom_url";
71     private static final String FULL_SCREEN_BROWSING_MODE = "full_screen_browsing_mode";
72     private static final String HIDE_APP_BAR = "hide_app_bar";
73     private static final String CLEAR_EVERYTHING = "clear_everything";
74     private static final String CLEAR_COOKIES = "clear_cookies";
75     private static final String CLEAR_DOM_STORAGE = "clear_dom_storage";
76     private static final String CLEAR_FORM_DATA = "clear_form_data";
77     private static final String CLEAR_CACHE = "clear_cache";
78     private static final String HOMEPAGE = "homepage";
79     private static final String DOWNLOAD_LOCATION = "download_location";
80     private static final String DOWNLOAD_CUSTOM_LOCATION = "download_custom_location";
81     private static final String FONT_SIZE = "font_size";
82     private static final String OPEN_INTENTS_IN_NEW_TAB = "open_intents_in_new_tab";
83     private static final String SWIPE_TO_REFRESH = "swipe_to_refresh";
84     private static final String SCROLL_APP_BAR = "scroll_app_bar";
85     private static final String DISPLAY_ADDITIONAL_APP_BAR_ICONS = "display_additional_app_bar_icons";
86     private static final String APP_THEME = "app_theme";
87     private static final String NIGHT_MODE = "night_mode";
88     private static final String WIDE_VIEWPORT = "wide_viewport";
89     private static final String DISPLAY_WEBPAGE_IMAGES = "display_webpage_images";
90
91     public String exportUnencrypted(File exportFile, Context context) {
92         try {
93             // Delete the current file if it exists.
94             if (exportFile.exists()) {
95                 //noinspection ResultOfMethodCallIgnored
96                 exportFile.delete();
97             }
98
99             // Create the export database.
100             SQLiteDatabase exportDatabase = SQLiteDatabase.openOrCreateDatabase(exportFile, null);
101
102             // Set the export database version number.
103             exportDatabase.setVersion(SCHEMA_VERSION);
104
105             // Create the export database domains table.
106             exportDatabase.execSQL(DomainsDatabaseHelper.CREATE_DOMAINS_TABLE);
107
108             // Open the domains database.  The `0` specifies the database version, but that is ignored and set instead using a constant in `DomainsDatabaseHelper`.
109             DomainsDatabaseHelper domainsDatabaseHelper = new DomainsDatabaseHelper(context, null, null, 0);
110
111             // Get a full domains database cursor.
112             Cursor domainsCursor = domainsDatabaseHelper.getCompleteCursorOrderedByDomain();
113
114             // Move to the first domain.
115             domainsCursor.moveToFirst();
116
117             // Copy the data from the domains cursor into the export database.
118             for (int i = 0; i < domainsCursor.getCount(); i++) {
119                 // Extract the record from the cursor and store the data in a ContentValues.
120                 ContentValues domainsContentValues = new ContentValues();
121                 domainsContentValues.put(DomainsDatabaseHelper.DOMAIN_NAME, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.DOMAIN_NAME)));
122                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_JAVASCRIPT, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_JAVASCRIPT)));
123                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FIRST_PARTY_COOKIES, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FIRST_PARTY_COOKIES)));
124                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_THIRD_PARTY_COOKIES, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_THIRD_PARTY_COOKIES)));
125                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_DOM_STORAGE, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_DOM_STORAGE)));
126                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FORM_DATA, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FORM_DATA)));
127                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_EASYLIST, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_EASYLIST)));
128                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_EASYPRIVACY, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_EASYPRIVACY)));
129                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST)));
130                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST)));
131                 domainsContentValues.put(DomainsDatabaseHelper.ULTRALIST, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ULTRALIST)));
132                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY)));
133                 domainsContentValues.put(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS)));
134                 domainsContentValues.put(DomainsDatabaseHelper.USER_AGENT, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.USER_AGENT)));
135                 domainsContentValues.put(DomainsDatabaseHelper.FONT_SIZE, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.FONT_SIZE)));
136                 domainsContentValues.put(DomainsDatabaseHelper.SWIPE_TO_REFRESH, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SWIPE_TO_REFRESH)));
137                 domainsContentValues.put(DomainsDatabaseHelper.NIGHT_MODE, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.NIGHT_MODE)));
138                 domainsContentValues.put(DomainsDatabaseHelper.WIDE_VIEWPORT, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.WIDE_VIEWPORT)));
139                 domainsContentValues.put(DomainsDatabaseHelper.DISPLAY_IMAGES, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.DISPLAY_IMAGES)));
140                 domainsContentValues.put(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE)));
141                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME)));
142                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION)));
143                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT)));
144                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME)));
145                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION)));
146                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT)));
147                 domainsContentValues.put(DomainsDatabaseHelper.SSL_START_DATE, domainsCursor.getLong(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_START_DATE)));
148                 domainsContentValues.put(DomainsDatabaseHelper.SSL_END_DATE, domainsCursor.getLong(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_END_DATE)));
149                 domainsContentValues.put(DomainsDatabaseHelper.PINNED_IP_ADDRESSES, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_IP_ADDRESSES)));
150                 domainsContentValues.put(DomainsDatabaseHelper.IP_ADDRESSES, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.IP_ADDRESSES)));
151
152                 // Insert the record into the export database.
153                 exportDatabase.insert(DomainsDatabaseHelper.DOMAINS_TABLE, null, domainsContentValues);
154
155                 // Advance to the next record.
156                 domainsCursor.moveToNext();
157             }
158
159             // Close the domains database.
160             domainsCursor.close();
161             domainsDatabaseHelper.close();
162
163
164             // Create the export database bookmarks table.
165             exportDatabase.execSQL(BookmarksDatabaseHelper.CREATE_BOOKMARKS_TABLE);
166
167             // Open the bookmarks database.  The `0` specifies the database version, but that is ignored and set instead using a constant in `BookmarksDatabaseHelper`.
168             BookmarksDatabaseHelper bookmarksDatabaseHelper = new BookmarksDatabaseHelper(context, null, null, 0);
169
170             // Get a full bookmarks cursor.
171             Cursor bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarks();
172
173             // Move to the first bookmark.
174             bookmarksCursor.moveToFirst();
175
176             // Copy the data from the bookmarks cursor into the export database.
177             for (int i = 0; i < bookmarksCursor.getCount(); i++) {
178                 // Extract the record from the cursor and store the data in a ContentValues.
179                 ContentValues bookmarksContentValues = new ContentValues();
180                 bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_NAME, bookmarksCursor.getString(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME)));
181                 bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_URL, bookmarksCursor.getString(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_URL)));
182                 bookmarksContentValues.put(BookmarksDatabaseHelper.PARENT_FOLDER, bookmarksCursor.getString(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.PARENT_FOLDER)));
183                 bookmarksContentValues.put(BookmarksDatabaseHelper.DISPLAY_ORDER, bookmarksCursor.getInt(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.DISPLAY_ORDER)));
184                 bookmarksContentValues.put(BookmarksDatabaseHelper.IS_FOLDER, bookmarksCursor.getInt(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.IS_FOLDER)));
185                 bookmarksContentValues.put(BookmarksDatabaseHelper.FAVORITE_ICON, bookmarksCursor.getBlob(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.FAVORITE_ICON)));
186
187                 // Insert the record into the export database.
188                 exportDatabase.insert(BookmarksDatabaseHelper.BOOKMARKS_TABLE, null, bookmarksContentValues);
189
190                 // Advance to the next record.
191                 bookmarksCursor.moveToNext();
192             }
193
194             // Close the bookmarks database.
195             bookmarksCursor.close();
196             bookmarksDatabaseHelper.close();
197
198
199             // Prepare the preferences table SQL creation string.
200             String CREATE_PREFERENCES_TABLE = "CREATE TABLE " + PREFERENCES_TABLE + " (" +
201                     _ID + " INTEGER PRIMARY KEY, " +
202                     JAVASCRIPT + " BOOLEAN, " +
203                     FIRST_PARTY_COOKIES + " BOOLEAN, " +
204                     THIRD_PARTY_COOKIES + " BOOLEAN, " +
205                     DOM_STORAGE + " BOOLEAN, " +
206                     SAVE_FORM_DATA + " BOOLEAN, " +
207                     USER_AGENT + " TEXT, " +
208                     CUSTOM_USER_AGENT + " TEXT, " +
209                     INCOGNITO_MODE + " BOOLEAN, " +
210                     DO_NOT_TRACK + " BOOLEAN, " +
211                     ALLOW_SCREENSHOTS + " BOOLEAN, " +
212                     EASYLIST + " BOOLEAN, " +
213                     EASYPRIVACY + " BOOLEAN, " +
214                     FANBOYS_ANNOYANCE_LIST + " BOOLEAN, " +
215                     FANBOYS_SOCIAL_BLOCKING_LIST + " BOOLEAN, " +
216                     ULTRALIST + " BOOLEAN, " +
217                     ULTRAPRIVACY + " BOOLEAN, " +
218                     BLOCK_ALL_THIRD_PARTY_REQUESTS + " BOOLEAN, " +
219                     GOOGLE_ANALYTICS + " BOOLEAN, " +
220                     FACEBOOK_CLICK_IDS + " BOOLEAN, " +
221                     TWITTER_AMP_REDIRECTS + " BOOLEAN, " +
222                     SEARCH + " TEXT, " +
223                     SEARCH_CUSTOM_URL + " TEXT, " +
224                     PROXY + " TEXT, " +
225                     PROXY_CUSTOM_URL + " TEXT, " +
226                     FULL_SCREEN_BROWSING_MODE + " BOOLEAN, " +
227                     HIDE_APP_BAR + " BOOLEAN, " +
228                     CLEAR_EVERYTHING + " BOOLEAN, " +
229                     CLEAR_COOKIES + " BOOLEAN, " +
230                     CLEAR_DOM_STORAGE + " BOOLEAN, " +
231                     CLEAR_FORM_DATA + " BOOLEAN, " +
232                     CLEAR_CACHE + " BOOLEAN, " +
233                     HOMEPAGE + " TEXT, " +
234                     DOWNLOAD_LOCATION + " TEXT, " +
235                     DOWNLOAD_CUSTOM_LOCATION + " TEXT, " +
236                     FONT_SIZE + " TEXT, " +
237                     OPEN_INTENTS_IN_NEW_TAB + " BOOLEAN, " +
238                     SWIPE_TO_REFRESH + " BOOLEAN, " +
239                     SCROLL_APP_BAR + " BOOLEAN, " +
240                     DISPLAY_ADDITIONAL_APP_BAR_ICONS + " BOOLEAN, " +
241                     APP_THEME + " TEXT, " +
242                     NIGHT_MODE + " BOOLEAN, " +
243                     WIDE_VIEWPORT + " BOOLEAN, " +
244                     DISPLAY_WEBPAGE_IMAGES + " BOOLEAN)";
245
246             // Create the export database preferences table.
247             exportDatabase.execSQL(CREATE_PREFERENCES_TABLE);
248
249             // Get a handle for the shared preference.
250             SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
251
252             // Create a ContentValues with the preferences information.
253             ContentValues preferencesContentValues = new ContentValues();
254             preferencesContentValues.put(JAVASCRIPT, sharedPreferences.getBoolean(JAVASCRIPT, false));
255             preferencesContentValues.put(FIRST_PARTY_COOKIES, sharedPreferences.getBoolean(FIRST_PARTY_COOKIES, false));
256             preferencesContentValues.put(THIRD_PARTY_COOKIES, sharedPreferences.getBoolean(THIRD_PARTY_COOKIES, false));
257             preferencesContentValues.put(DOM_STORAGE, sharedPreferences.getBoolean(DOM_STORAGE, false));
258             preferencesContentValues.put(SAVE_FORM_DATA, sharedPreferences.getBoolean(SAVE_FORM_DATA, false));  // Save form data can be removed once the minimum API >= 26.
259             preferencesContentValues.put(USER_AGENT, sharedPreferences.getString(USER_AGENT, context.getString(R.string.user_agent_default_value)));
260             preferencesContentValues.put(CUSTOM_USER_AGENT, sharedPreferences.getString(CUSTOM_USER_AGENT, context.getString(R.string.custom_user_agent_default_value)));
261             preferencesContentValues.put(INCOGNITO_MODE, sharedPreferences.getBoolean(INCOGNITO_MODE, false));
262             preferencesContentValues.put(DO_NOT_TRACK, sharedPreferences.getBoolean(DO_NOT_TRACK, false));
263             preferencesContentValues.put(ALLOW_SCREENSHOTS, sharedPreferences.getBoolean(ALLOW_SCREENSHOTS, false));
264             preferencesContentValues.put(EASYLIST, sharedPreferences.getBoolean(EASYLIST, true));
265             preferencesContentValues.put(EASYPRIVACY, sharedPreferences.getBoolean(EASYPRIVACY, true));
266             preferencesContentValues.put(FANBOYS_ANNOYANCE_LIST, sharedPreferences.getBoolean(FANBOYS_ANNOYANCE_LIST, true));
267             preferencesContentValues.put(FANBOYS_SOCIAL_BLOCKING_LIST, sharedPreferences.getBoolean(FANBOYS_SOCIAL_BLOCKING_LIST, true));
268             preferencesContentValues.put(ULTRALIST, sharedPreferences.getBoolean(ULTRALIST, true));
269             preferencesContentValues.put(ULTRAPRIVACY, sharedPreferences.getBoolean(ULTRAPRIVACY, true));
270             preferencesContentValues.put(BLOCK_ALL_THIRD_PARTY_REQUESTS, sharedPreferences.getBoolean(BLOCK_ALL_THIRD_PARTY_REQUESTS, false));
271             preferencesContentValues.put(GOOGLE_ANALYTICS, sharedPreferences.getBoolean(GOOGLE_ANALYTICS, true));
272             preferencesContentValues.put(FACEBOOK_CLICK_IDS, sharedPreferences.getBoolean(FACEBOOK_CLICK_IDS, true));
273             preferencesContentValues.put(TWITTER_AMP_REDIRECTS, sharedPreferences.getBoolean(TWITTER_AMP_REDIRECTS, true));
274             preferencesContentValues.put(SEARCH, sharedPreferences.getString(SEARCH, context.getString(R.string.search_default_value)));
275             preferencesContentValues.put(SEARCH_CUSTOM_URL, sharedPreferences.getString(SEARCH_CUSTOM_URL, context.getString(R.string.search_custom_url_default_value)));
276             preferencesContentValues.put(PROXY, sharedPreferences.getString(PROXY, context.getString(R.string.proxy_default_value)));
277             preferencesContentValues.put(PROXY_CUSTOM_URL, sharedPreferences.getString(PROXY_CUSTOM_URL, context.getString(R.string.proxy_custom_url_default_value)));
278             preferencesContentValues.put(FULL_SCREEN_BROWSING_MODE, sharedPreferences.getBoolean(FULL_SCREEN_BROWSING_MODE, false));
279             preferencesContentValues.put(HIDE_APP_BAR, sharedPreferences.getBoolean(HIDE_APP_BAR, true));
280             preferencesContentValues.put(CLEAR_EVERYTHING, sharedPreferences.getBoolean(CLEAR_EVERYTHING, true));
281             preferencesContentValues.put(CLEAR_COOKIES, sharedPreferences.getBoolean(CLEAR_COOKIES, true));
282             preferencesContentValues.put(CLEAR_DOM_STORAGE, sharedPreferences.getBoolean(CLEAR_DOM_STORAGE, true));
283             preferencesContentValues.put(CLEAR_FORM_DATA, sharedPreferences.getBoolean(CLEAR_FORM_DATA, true));  // Clear form data can be removed once the minimum API >= 26.
284             preferencesContentValues.put(CLEAR_CACHE, sharedPreferences.getBoolean(CLEAR_CACHE, true));
285             preferencesContentValues.put(HOMEPAGE, sharedPreferences.getString(HOMEPAGE, context.getString(R.string.homepage_default_value)));
286             preferencesContentValues.put(DOWNLOAD_LOCATION, sharedPreferences.getString(DOWNLOAD_LOCATION, context.getString(R.string.download_location_default_value)));
287             preferencesContentValues.put(DOWNLOAD_CUSTOM_LOCATION, sharedPreferences.getString(DOWNLOAD_CUSTOM_LOCATION, context.getString(R.string.download_custom_location_default_value)));
288             preferencesContentValues.put(FONT_SIZE, sharedPreferences.getString(FONT_SIZE, context.getString(R.string.font_size_default_value)));
289             preferencesContentValues.put(OPEN_INTENTS_IN_NEW_TAB, sharedPreferences.getBoolean(OPEN_INTENTS_IN_NEW_TAB, true));
290             preferencesContentValues.put(SWIPE_TO_REFRESH, sharedPreferences.getBoolean(SWIPE_TO_REFRESH, true));
291             preferencesContentValues.put(SCROLL_APP_BAR, sharedPreferences.getBoolean(SCROLL_APP_BAR, true));
292             preferencesContentValues.put(DISPLAY_ADDITIONAL_APP_BAR_ICONS, sharedPreferences.getBoolean(DISPLAY_ADDITIONAL_APP_BAR_ICONS, false));
293             preferencesContentValues.put(APP_THEME, sharedPreferences.getString(APP_THEME, context.getString(R.string.app_theme_default_value)));
294             preferencesContentValues.put(NIGHT_MODE, sharedPreferences.getBoolean(NIGHT_MODE, false));
295             preferencesContentValues.put(WIDE_VIEWPORT, sharedPreferences.getBoolean(WIDE_VIEWPORT, true));
296             preferencesContentValues.put(DISPLAY_WEBPAGE_IMAGES, sharedPreferences.getBoolean(DISPLAY_WEBPAGE_IMAGES, true));
297
298             // Insert the preferences into the export database.
299             exportDatabase.insert(PREFERENCES_TABLE, null, preferencesContentValues);
300
301             // Close the export database.
302             exportDatabase.close();
303
304             // Convert the database file to a string.
305             String exportFileString = exportFile.toString();
306
307             // Create strings for the temporary database files.
308             String journalFileString = exportFileString + "-journal";
309
310             // Get `Files` for the temporary database files.
311             File journalFile = new File(journalFileString);
312
313             // Delete the Journal file if it exists.
314             if (journalFile.exists()) {
315                 //noinspection ResultOfMethodCallIgnored
316                 journalFile.delete();
317             }
318
319             // Export successful.
320             return EXPORT_SUCCESSFUL;
321         } catch (Exception exception) {
322             // Return the export error.
323             return exception.toString();
324         }
325     }
326
327     public String importUnencrypted(File importFile, Context context){
328         try {
329             // Create a temporary import file string.
330             String temporaryImportFileString = context.getCacheDir() + "/" + "temporary_import_file";
331
332             // Get a handle for a temporary import file.
333             File temporaryImportFile = new File(temporaryImportFileString);
334
335             // Delete the temporary import file if it already exists.
336             if (temporaryImportFile.exists()) {
337                 //noinspection ResultOfMethodCallIgnored
338                 temporaryImportFile.delete();
339             }
340
341             // Create input and output streams.
342             InputStream importFileInputStream = new FileInputStream(importFile);
343             OutputStream temporaryImportFileOutputStream = new FileOutputStream(temporaryImportFile);
344
345             // Create a byte array.
346             byte[] transferByteArray = new byte[1024];
347
348             // Create an integer to track the number of bytes read.
349             int bytesRead;
350
351             // Copy the import file to the temporary import file.  Once the minimum API >= 26 `Files.copy` can be used instead.
352             while ((bytesRead = importFileInputStream.read(transferByteArray)) > 0) {
353                 temporaryImportFileOutputStream.write(transferByteArray, 0, bytesRead);
354             }
355
356             // Close the file streams.
357             importFileInputStream.close();
358             temporaryImportFileOutputStream.close();
359
360
361             // Get a handle for the shared preference.
362             SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
363
364             // Open the import database.  Once the minimum API >= 27 the file can be opened directly without using the string.
365             SQLiteDatabase importDatabase = SQLiteDatabase.openDatabase(temporaryImportFileString, null, SQLiteDatabase.OPEN_READWRITE);
366
367             // Get the database version.
368             int importDatabaseVersion = importDatabase.getVersion();
369
370             // Upgrade the database if needed.
371             if (importDatabaseVersion < SCHEMA_VERSION) {
372                 switch (importDatabaseVersion){
373                     // Upgrade from schema version 1.
374                     case 1:
375                         // Previously this upgrade added `download_with_external_app` to the Preferences table.  But that is now removed in schema version 10.
376
377                     // Upgrade from schema version 2.
378                     case 2:
379                         // 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
380                         // https://developer.android.com/reference/android/database/sqlite/package-summary
381                         // 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.
382
383                         // Get a cursor with the current `default_font_size` value.
384                         Cursor importDatabasePreferenceCursor = importDatabase.rawQuery("SELECT default_font_size FROM " + PREFERENCES_TABLE, null);
385
386                         // Move to the beginning fo the cursor.
387                         importDatabasePreferenceCursor.moveToFirst();
388
389                         // Get the current value in `default_font_size`.
390                         String fontSize = importDatabasePreferenceCursor.getString(importDatabasePreferenceCursor.getColumnIndex("default_font_size"));
391
392                         // SQL escape the font size.
393                         fontSize = DatabaseUtils.sqlEscapeString(fontSize);
394
395                         // Close the cursor.
396                         importDatabasePreferenceCursor.close();
397
398                         // Create the new font size column.
399                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + FONT_SIZE + " TEXT");
400
401                         // Populate the preferences table with the current font size value.
402                         importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + FONT_SIZE + " = '" + fontSize + "'");
403
404                     // Upgrade from schema version 3.
405                     case 3:
406                         // Add the Pinned IP Addresses columns to the domains table.
407                         importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.PINNED_IP_ADDRESSES + " BOOLEAN");
408                         importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.IP_ADDRESSES + " TEXT");
409
410                     // Upgrade from schema version 4.
411                     case 4:
412                         // Add the hide and scroll app bar columns to the preferences table.
413                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + HIDE_APP_BAR + " BOOLEAN");
414                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + SCROLL_APP_BAR + " BOOLEAN");
415
416                         // Get the current hide and scroll app bar settings.
417                         boolean hideAppBar = sharedPreferences.getBoolean(HIDE_APP_BAR, true);
418                         boolean scrollAppBar = sharedPreferences.getBoolean(SCROLL_APP_BAR, true);
419
420                         // Populate the preferences table with the current app bar values.
421                         if (hideAppBar) {
422                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + HIDE_APP_BAR + " = " + 1);
423                         } else {
424                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + HIDE_APP_BAR + " = " + 0);
425                         }
426
427                         if (scrollAppBar) {
428                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + SCROLL_APP_BAR + " = " + 1);
429                         } else {
430                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + SCROLL_APP_BAR + " = " + 0);
431                         }
432
433                     // Upgrade from schema version 5.
434                     case 5:
435                         // Add the open intents in new tab column to the preferences table.
436                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + OPEN_INTENTS_IN_NEW_TAB + " BOOLEAN");
437
438                         // Get the current open intents in new tab preference.
439                         boolean openIntentsInNewTab = sharedPreferences.getBoolean(OPEN_INTENTS_IN_NEW_TAB, true);
440
441                         // Populate the preferences table with the current open intents value.
442                         if (openIntentsInNewTab) {
443                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + OPEN_INTENTS_IN_NEW_TAB + " = " + 1);
444                         } else {
445                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + OPEN_INTENTS_IN_NEW_TAB + " = " + 0);
446                         }
447
448                     // Upgrade from schema version 6.
449                     case 6:
450                         // Add the wide viewport column to the domains table.
451                         importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.WIDE_VIEWPORT + " INTEGER");
452
453                         // Add the Google Analytics, Facebook Click IDs, Twitter AMP redirects, and wide viewport columns to the preferences table.
454                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + GOOGLE_ANALYTICS + " BOOLEAN");
455                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + FACEBOOK_CLICK_IDS + " BOOLEAN");
456                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + TWITTER_AMP_REDIRECTS + " BOOLEAN");
457                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + WIDE_VIEWPORT + " BOOLEAN");
458
459                         // Get the current preference values.
460                         boolean googleAnalytics = sharedPreferences.getBoolean(GOOGLE_ANALYTICS, true);
461                         boolean facebookClickIds = sharedPreferences.getBoolean(FACEBOOK_CLICK_IDS, true);
462                         boolean twitterAmpRedirects = sharedPreferences.getBoolean(TWITTER_AMP_REDIRECTS, true);
463                         boolean wideViewport = sharedPreferences.getBoolean(WIDE_VIEWPORT, true);
464
465                         // Populate the preferences with the current Google Analytics value.
466                         if (googleAnalytics) {
467                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + GOOGLE_ANALYTICS + " = " + 1);
468                         } else {
469                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + GOOGLE_ANALYTICS + " = " + 0);
470                         }
471
472                         // Populate the preferences with the current Facebook Click IDs value.
473                         if (facebookClickIds) {
474                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + FACEBOOK_CLICK_IDS + " = " + 1);
475                         } else {
476                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + FACEBOOK_CLICK_IDS + " = " + 0);
477                         }
478
479                         // Populate the preferences table with the current Twitter AMP redirects value.
480                         if (twitterAmpRedirects) {
481                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + TWITTER_AMP_REDIRECTS + " = " + 1);
482                         } else {
483                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + TWITTER_AMP_REDIRECTS + " = " + 0);
484                         }
485
486                         // Populate the preferences table with the current wide viewport value.
487                         if (wideViewport) {
488                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + WIDE_VIEWPORT + " = " + 1);
489                         } else {
490                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + WIDE_VIEWPORT + " = " + 0);
491                         }
492
493                     // Upgrade from schema version 7.
494                     case 7:
495                         // Add the UltraList column to the domains table.
496                         importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.ULTRALIST + " BOOLEAN");
497
498                         // Add the UltraList column to the preferences table.
499                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + ULTRALIST + " BOOLEAN");
500
501                         // Get the current preference values.
502                         boolean ultraList = sharedPreferences.getBoolean(ULTRALIST, true);
503
504                         // Populate the preferences tables with the current UltraList value.
505                         if (ultraList) {
506                             importDatabase.execSQL("UPDATE " + DomainsDatabaseHelper.DOMAINS_TABLE + " SET " + DomainsDatabaseHelper.ULTRALIST + " = " + 1);
507                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + ULTRALIST + " = " + 1);
508                         } else {
509                             importDatabase.execSQL("UPDATE " + DomainsDatabaseHelper.DOMAINS_TABLE + " SET " + DomainsDatabaseHelper.ULTRALIST + " = " + 0);
510                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + ULTRALIST + " = " + 0);
511                         }
512
513                     // Upgrade from schema version 8.
514                     case 8:
515                         // Add the new proxy columns to the preferences table.
516                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + PROXY + " TEXT");
517                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + PROXY_CUSTOM_URL + " TEXT");
518
519                         // Get the current proxy values.
520                         String proxy = sharedPreferences.getString(PROXY, context.getString(R.string.proxy_default_value));
521                         String proxyCustomUrl = sharedPreferences.getString(PROXY_CUSTOM_URL, context.getString(R.string.proxy_custom_url_default_value));
522
523                         // SQL escape the proxy custom URL string.
524                         proxyCustomUrl = DatabaseUtils.sqlEscapeString(proxyCustomUrl);
525
526                         // Populate the preferences table with the current proxy values.
527                         importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + PROXY + " = '" + proxy + "'");
528                         importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + PROXY_CUSTOM_URL + " = '" + proxyCustomUrl + "'");
529
530                     // Upgrade from schema version 9.
531                     case 9:
532                         // Add the download location columns to the preferences table.
533                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + DOWNLOAD_LOCATION + " TEXT");
534                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + DOWNLOAD_CUSTOM_LOCATION + " TEXT");
535
536                         // Get the current download location values.
537                         String downloadLocation = sharedPreferences.getString(DOWNLOAD_LOCATION, context.getString(R.string.download_location_default_value));
538                         String downloadCustomLocation = sharedPreferences.getString(DOWNLOAD_CUSTOM_LOCATION, context.getString(R.string.download_custom_location_default_value));
539
540                         // Populate the preferences table with the current download location values.
541                         importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + DOWNLOAD_LOCATION + " = '" + downloadLocation + "'");
542                         importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + DOWNLOAD_CUSTOM_LOCATION + " = '" + downloadCustomLocation + "'");
543
544                     // Upgrade from schema version 10.
545                     case 10:
546                         // Add the app theme column to the preferences table.
547                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + APP_THEME + " TEXT");
548
549                         // Get a cursor for the dark theme preference.
550                         Cursor darkThemePreferencesCursor = importDatabase.rawQuery("SELECT dark_theme FROM " + PREFERENCES_TABLE, null);
551
552                         // Move to the first preference.
553                         darkThemePreferencesCursor.moveToFirst();
554
555                         // Get the old dark theme value, which is in column 0.
556                         int darkTheme = darkThemePreferencesCursor.getInt(0);
557
558                         // Close the dark theme preference cursor.
559                         darkThemePreferencesCursor.close();
560
561                         // Populate the app theme according to the old dark theme preference.
562                         if (darkTheme == 0) {  // A light theme was selected.
563                             // Set the app theme to be the system default.
564                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + APP_THEME + " = 'System default'");
565                         } else {  // A dark theme was selected.
566                             // Set the app theme to be dark.
567                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + APP_THEME + " = 'Dark'");
568                         }
569                 }
570             }
571
572             // Get a cursor for the domains table.
573             Cursor importDomainsCursor = importDatabase.rawQuery("SELECT * FROM " + DomainsDatabaseHelper.DOMAINS_TABLE + " ORDER BY " + DomainsDatabaseHelper.DOMAIN_NAME + " ASC", null);
574
575             // Delete the current domains database.
576             context.deleteDatabase(DomainsDatabaseHelper.DOMAINS_DATABASE);
577
578             // Create a new domains database.  The `0` specifies the database version, but that is ignored and set instead using a constant in `DomainsDatabaseHelper`.
579             DomainsDatabaseHelper domainsDatabaseHelper = new DomainsDatabaseHelper(context, null, null, 0);
580
581             // Move to the first domain.
582             importDomainsCursor.moveToFirst();
583
584             // Copy the data from the import domains cursor into the domains database.
585             for (int i = 0; i < importDomainsCursor.getCount(); i++) {
586                 // Extract the record from the cursor and store the data in a ContentValues.
587                 ContentValues domainsContentValues = new ContentValues();
588                 domainsContentValues.put(DomainsDatabaseHelper.DOMAIN_NAME, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.DOMAIN_NAME)));
589                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_JAVASCRIPT, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_JAVASCRIPT)));
590                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FIRST_PARTY_COOKIES, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FIRST_PARTY_COOKIES)));
591                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_THIRD_PARTY_COOKIES, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_THIRD_PARTY_COOKIES)));
592                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_DOM_STORAGE, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_DOM_STORAGE)));
593                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FORM_DATA, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FORM_DATA)));
594                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_EASYLIST, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_EASYLIST)));
595                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_EASYPRIVACY, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_EASYPRIVACY)));
596                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST,
597                         importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST)));
598                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST,
599                         importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST)));
600                 domainsContentValues.put(DomainsDatabaseHelper.ULTRALIST, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ULTRALIST)));
601                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY)));
602                 domainsContentValues.put(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS,
603                         importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS)));
604                 domainsContentValues.put(DomainsDatabaseHelper.USER_AGENT, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.USER_AGENT)));
605                 domainsContentValues.put(DomainsDatabaseHelper.FONT_SIZE, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.FONT_SIZE)));
606                 domainsContentValues.put(DomainsDatabaseHelper.SWIPE_TO_REFRESH, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SWIPE_TO_REFRESH)));
607                 domainsContentValues.put(DomainsDatabaseHelper.NIGHT_MODE, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.NIGHT_MODE)));
608                 domainsContentValues.put(DomainsDatabaseHelper.WIDE_VIEWPORT, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.WIDE_VIEWPORT)));
609                 domainsContentValues.put(DomainsDatabaseHelper.DISPLAY_IMAGES, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.DISPLAY_IMAGES)));
610                 domainsContentValues.put(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE)));
611                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME)));
612                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION)));
613                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT,
614                         importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT)));
615                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME)));
616                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION)));
617                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT,
618                         importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT)));
619                 domainsContentValues.put(DomainsDatabaseHelper.SSL_START_DATE, importDomainsCursor.getLong(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_START_DATE)));
620                 domainsContentValues.put(DomainsDatabaseHelper.SSL_END_DATE, importDomainsCursor.getLong(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_END_DATE)));
621                 domainsContentValues.put(DomainsDatabaseHelper.PINNED_IP_ADDRESSES, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_IP_ADDRESSES)));
622                 domainsContentValues.put(DomainsDatabaseHelper.IP_ADDRESSES, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.IP_ADDRESSES)));
623
624                 // Insert the record into the export database.
625                 domainsDatabaseHelper.addDomain(domainsContentValues);
626
627                 // Advance to the next record.
628                 importDomainsCursor.moveToNext();
629             }
630
631             // Close the domains cursor.
632             importDomainsCursor.close();
633
634             // Close the domains database.
635             domainsDatabaseHelper.close();
636
637
638             // Get a cursor for the bookmarks table.
639             Cursor importBookmarksCursor = importDatabase.rawQuery("SELECT * FROM " + BookmarksDatabaseHelper.BOOKMARKS_TABLE, null);
640
641             // Delete the current bookmarks database.
642             context.deleteDatabase(BookmarksDatabaseHelper.BOOKMARKS_DATABASE);
643
644             // Create a new bookmarks database.  The `0` specifies the database version, but that is ignored and set instead using a constant in `BookmarksDatabaseHelper`.
645             BookmarksDatabaseHelper bookmarksDatabaseHelper = new BookmarksDatabaseHelper(context, null, null, 0);
646
647             // Move to the first bookmark.
648             importBookmarksCursor.moveToFirst();
649
650             // Copy the data from the import bookmarks cursor into the bookmarks database.
651             for (int i = 0; i < importBookmarksCursor.getCount(); i++) {
652                 // Extract the record from the cursor and store the data in a ContentValues.
653                 ContentValues bookmarksContentValues = new ContentValues();
654                 bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_NAME, importBookmarksCursor.getString(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME)));
655                 bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_URL, importBookmarksCursor.getString(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_URL)));
656                 bookmarksContentValues.put(BookmarksDatabaseHelper.PARENT_FOLDER, importBookmarksCursor.getString(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.PARENT_FOLDER)));
657                 bookmarksContentValues.put(BookmarksDatabaseHelper.DISPLAY_ORDER, importBookmarksCursor.getInt(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.DISPLAY_ORDER)));
658                 bookmarksContentValues.put(BookmarksDatabaseHelper.IS_FOLDER, importBookmarksCursor.getInt(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.IS_FOLDER)));
659                 bookmarksContentValues.put(BookmarksDatabaseHelper.FAVORITE_ICON, importBookmarksCursor.getBlob(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.FAVORITE_ICON)));
660
661                 // Insert the record into the export database.
662                 bookmarksDatabaseHelper.createBookmark(bookmarksContentValues);
663
664                 // Advance to the next record.
665                 importBookmarksCursor.moveToNext();
666             }
667
668             // Close the bookmarks cursor.
669             importBookmarksCursor.close();
670
671             // Close the bookmarks database.
672             bookmarksDatabaseHelper.close();
673
674
675             // Get a cursor for the preferences table.
676             Cursor importPreferencesCursor = importDatabase.rawQuery("SELECT * FROM " + PREFERENCES_TABLE, null);
677
678             // Move to the first preference.
679             importPreferencesCursor.moveToFirst();
680
681             // Import the preference data.
682             sharedPreferences.edit()
683                     .putBoolean(JAVASCRIPT, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(JAVASCRIPT)) == 1)
684                     .putBoolean(FIRST_PARTY_COOKIES, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(FIRST_PARTY_COOKIES)) == 1)
685                     .putBoolean(THIRD_PARTY_COOKIES, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(THIRD_PARTY_COOKIES)) == 1)
686                     .putBoolean(DOM_STORAGE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(DOM_STORAGE)) == 1)
687                     // Save form data can be removed once the minimum API >= 26.
688                     .putBoolean(SAVE_FORM_DATA, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(SAVE_FORM_DATA)) == 1)
689                     .putString(USER_AGENT, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(USER_AGENT)))
690                     .putString(CUSTOM_USER_AGENT, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(CUSTOM_USER_AGENT)))
691                     .putBoolean(INCOGNITO_MODE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(INCOGNITO_MODE)) == 1)
692                     .putBoolean(DO_NOT_TRACK, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(DO_NOT_TRACK)) == 1)
693                     .putBoolean(ALLOW_SCREENSHOTS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(ALLOW_SCREENSHOTS)) == 1)
694                     .putBoolean(EASYLIST, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(EASYLIST)) == 1)
695                     .putBoolean(EASYPRIVACY, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(EASYPRIVACY)) == 1)
696                     .putBoolean(FANBOYS_ANNOYANCE_LIST, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(FANBOYS_ANNOYANCE_LIST)) == 1)
697                     .putBoolean(FANBOYS_SOCIAL_BLOCKING_LIST, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(FANBOYS_SOCIAL_BLOCKING_LIST)) == 1)
698                     .putBoolean(ULTRALIST, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(ULTRALIST)) == 1)
699                     .putBoolean(ULTRAPRIVACY, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(ULTRAPRIVACY)) == 1)
700                     .putBoolean(BLOCK_ALL_THIRD_PARTY_REQUESTS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(BLOCK_ALL_THIRD_PARTY_REQUESTS)) == 1)
701                     .putBoolean(GOOGLE_ANALYTICS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(GOOGLE_ANALYTICS)) == 1)
702                     .putBoolean(FACEBOOK_CLICK_IDS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(FACEBOOK_CLICK_IDS)) == 1)
703                     .putBoolean(TWITTER_AMP_REDIRECTS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(TWITTER_AMP_REDIRECTS)) == 1)
704                     .putString(SEARCH, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(SEARCH)))
705                     .putString(SEARCH_CUSTOM_URL, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(SEARCH_CUSTOM_URL)))
706                     .putString(PROXY, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(PROXY)))
707                     .putString(PROXY_CUSTOM_URL, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(PROXY_CUSTOM_URL)))
708                     .putBoolean(FULL_SCREEN_BROWSING_MODE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(FULL_SCREEN_BROWSING_MODE)) == 1)
709                     .putBoolean(HIDE_APP_BAR, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(HIDE_APP_BAR)) == 1)
710                     .putBoolean(CLEAR_EVERYTHING, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_EVERYTHING)) == 1)
711                     .putBoolean(CLEAR_COOKIES, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_COOKIES)) == 1)
712                     .putBoolean(CLEAR_DOM_STORAGE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_DOM_STORAGE)) == 1)
713                     // Clear form data can be removed once the minimum API >= 26.
714                     .putBoolean(CLEAR_FORM_DATA, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_FORM_DATA)) == 1)
715                     .putBoolean(CLEAR_CACHE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_CACHE)) == 1)
716                     .putString(HOMEPAGE, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(HOMEPAGE)))
717                     .putString(DOWNLOAD_LOCATION, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(DOWNLOAD_LOCATION)))
718                     .putString(DOWNLOAD_CUSTOM_LOCATION, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(DOWNLOAD_CUSTOM_LOCATION)))
719                     .putString(FONT_SIZE, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(FONT_SIZE)))
720                     .putBoolean(OPEN_INTENTS_IN_NEW_TAB, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(OPEN_INTENTS_IN_NEW_TAB)) == 1)
721                     .putBoolean(SWIPE_TO_REFRESH, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(SWIPE_TO_REFRESH)) == 1)
722                     .putBoolean(SCROLL_APP_BAR, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(SCROLL_APP_BAR)) == 1)
723                     .putBoolean(DISPLAY_ADDITIONAL_APP_BAR_ICONS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(DISPLAY_ADDITIONAL_APP_BAR_ICONS)) == 1)
724                     .putString(APP_THEME, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(APP_THEME)))
725                     .putBoolean(NIGHT_MODE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(NIGHT_MODE)) == 1)
726                     .putBoolean(WIDE_VIEWPORT, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(WIDE_VIEWPORT)) == 1)
727                     .putBoolean(DISPLAY_WEBPAGE_IMAGES, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(DISPLAY_WEBPAGE_IMAGES)) == 1)
728                     .apply();
729
730             // Close the preferences cursor.
731             importPreferencesCursor.close();
732
733
734             // Close the import database.
735             importDatabase.close();
736
737             // Create strings for the temporary database files.
738             String shmFileString = temporaryImportFileString + "-shm";
739             String walFileString = temporaryImportFileString + "-wal";
740             String journalFileString = temporaryImportFileString + "-journal";
741
742             // Get `Files` for the temporary database files.
743             File shmFile = new File(shmFileString);
744             File walFile = new File(walFileString);
745             File journalFile = new File(journalFileString);
746
747             // Delete the Shared Memory file if it exists.
748             if (shmFile.exists()) {
749                 //noinspection ResultOfMethodCallIgnored
750                 shmFile.delete();
751             }
752
753             // Delete the Write Ahead Log file if it exists.
754             if (walFile.exists()) {
755                 //noinspection ResultOfMethodCallIgnored
756                 walFile.delete();
757             }
758
759             // Delete the Journal file if it exists.
760             if (journalFile.exists()) {
761                 //noinspection ResultOfMethodCallIgnored
762                 journalFile.delete();
763             }
764
765             // Delete the temporary import file.
766             //noinspection ResultOfMethodCallIgnored
767             temporaryImportFile.delete();
768
769             // Import successful.
770             return IMPORT_SUCCESSFUL;
771         } catch (Exception exception) {
772             // Return the import error.
773             return exception.toString();
774         }
775     }
776 }