42cd1c7ab3965afb66ab7385e8cbf456f781d411
[PrivacyBrowser.git] / app / src / main / java / com / stoutner / privacybrowser / helpers / ImportExportDatabaseHelper.java
1 /*
2  * Copyright © 2018-2021 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     // Declare the public constants.
40     public static final String EXPORT_SUCCESSFUL = "Export Successful";
41     public static final String IMPORT_SUCCESSFUL = "Import Successful";
42
43     // Declare the class constants.
44     private static final int SCHEMA_VERSION = 14;
45     private static final String PREFERENCES_TABLE = "preferences";
46
47     // Declare the preferences constants.
48     private static final String _ID = "_id";
49     private static final String JAVASCRIPT = "javascript";
50     private static final String COOKIES = "cookies";
51     private static final String DOM_STORAGE = "dom_storage";
52     private static final String SAVE_FORM_DATA = "save_form_data";
53     private static final String USER_AGENT = "user_agent";
54     private static final String CUSTOM_USER_AGENT = "custom_user_agent";
55     private static final String INCOGNITO_MODE = "incognito_mode";
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_LOGCAT = "clear_logcat";
78     private static final String CLEAR_CACHE = "clear_cache";
79     private static final String HOMEPAGE = "homepage";
80     private static final String FONT_SIZE = "font_size";
81     private static final String OPEN_INTENTS_IN_NEW_TAB = "open_intents_in_new_tab";
82     private static final String SWIPE_TO_REFRESH = "swipe_to_refresh";
83     private static final String DOWNLOAD_WITH_EXTERNAL_APP = "download_with_external_app";
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 WEBVIEW_THEME = "webview_theme";
88     private static final String WIDE_VIEWPORT = "wide_viewport";
89     private static final String DISPLAY_WEBPAGE_IMAGES = "display_webpage_images";
90
91     public String importUnencrypted(InputStream importFileInputStream, Context context){
92         try {
93             // Create a temporary import file.
94             File temporaryImportFile = File.createTempFile("temporary_import_file", null, context.getCacheDir());
95
96             // Create a temporary file output stream.
97             FileOutputStream temporaryImportFileOutputStream = new FileOutputStream(temporaryImportFile);
98
99             // Create a transfer byte array.
100             byte[] transferByteArray = new byte[1024];
101
102             // Create an integer to track the number of bytes read.
103             int bytesRead;
104
105             // Copy the import file to the temporary import file.
106             while ((bytesRead = importFileInputStream.read(transferByteArray)) > 0) {
107                 temporaryImportFileOutputStream.write(transferByteArray, 0, bytesRead);
108             }
109
110             // Flush the temporary import file output stream.
111             temporaryImportFileOutputStream.flush();
112
113             // Close the file streams.
114             importFileInputStream.close();
115             temporaryImportFileOutputStream.close();
116
117
118             // Get a handle for the shared preference.
119             SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
120
121             // Open the import database.  Once the minimum API >= 27 the file can be opened directly without using the string.
122             SQLiteDatabase importDatabase = SQLiteDatabase.openDatabase(temporaryImportFile.toString(), null, SQLiteDatabase.OPEN_READWRITE);
123
124             // Get the database version.
125             int importDatabaseVersion = importDatabase.getVersion();
126
127             // Upgrade the database if needed.
128             if (importDatabaseVersion < SCHEMA_VERSION) {
129                 switch (importDatabaseVersion) {
130                     // Upgrade from schema version 1, Privacy Browser 2.13.
131                     case 1:
132                         // Previously this upgrade added `download_with_external_app` to the Preferences table.  But that is now removed in schema version 10.
133
134                     // Upgrade from schema version 2, Privacy Browser 2.14.
135                     case 2:
136                         // 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>
137                         // <https://developer.android.com/reference/android/database/sqlite/package-summary>
138                         // 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.
139
140                         // Create the new font size column.
141                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + FONT_SIZE + " TEXT");
142
143                         // Populate the preferences table with the current font size value.
144                         importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + FONT_SIZE + " = default_font_size");
145
146                     // Upgrade from schema version 3, Privacy Browser 2.15.
147                     case 3:
148                         // Add the Pinned IP Addresses columns to the domains table.
149                         importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.PINNED_IP_ADDRESSES + " BOOLEAN");
150                         importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.IP_ADDRESSES + " TEXT");
151
152                     // Upgrade from schema version 4, Privacy Browser 2.16.
153                     case 4:
154                         // Add the hide and scroll app bar columns to the preferences table.
155                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + HIDE_APP_BAR + " BOOLEAN");
156                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + SCROLL_APP_BAR + " BOOLEAN");
157
158                         // Get the current hide and scroll app bar settings.
159                         boolean hideAppBar = sharedPreferences.getBoolean(HIDE_APP_BAR, true);
160                         boolean scrollAppBar = sharedPreferences.getBoolean(SCROLL_APP_BAR, true);
161
162                         // Populate the preferences table with the current app bar values.
163                         if (hideAppBar) {
164                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + HIDE_APP_BAR + " = " + 1);
165                         } else {
166                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + HIDE_APP_BAR + " = " + 0);
167                         }
168
169                         if (scrollAppBar) {
170                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + SCROLL_APP_BAR + " = " + 1);
171                         } else {
172                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + SCROLL_APP_BAR + " = " + 0);
173                         }
174
175                     // Upgrade from schema version 5, Privacy Browser 2.17.
176                     case 5:
177                         // Add the open intents in new tab column to the preferences table.
178                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + OPEN_INTENTS_IN_NEW_TAB + " BOOLEAN");
179
180                         // Get the current open intents in new tab preference.
181                         boolean openIntentsInNewTab = sharedPreferences.getBoolean(OPEN_INTENTS_IN_NEW_TAB, true);
182
183                         // Populate the preferences table with the current open intents value.
184                         if (openIntentsInNewTab) {
185                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + OPEN_INTENTS_IN_NEW_TAB + " = " + 1);
186                         } else {
187                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + OPEN_INTENTS_IN_NEW_TAB + " = " + 0);
188                         }
189
190                     // Upgrade from schema version 6, Privacy Browser 3.0.
191                     case 6:
192                         // Add the wide viewport column to the domains table.
193                         importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.WIDE_VIEWPORT + " INTEGER");
194
195                         // Add the Google Analytics, Facebook Click IDs, Twitter AMP redirects, and wide viewport columns to the preferences table.
196                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + GOOGLE_ANALYTICS + " BOOLEAN");
197                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + FACEBOOK_CLICK_IDS + " BOOLEAN");
198                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + TWITTER_AMP_REDIRECTS + " BOOLEAN");
199                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + WIDE_VIEWPORT + " BOOLEAN");
200
201                         // Get the current preference values.
202                         boolean googleAnalytics = sharedPreferences.getBoolean(GOOGLE_ANALYTICS, true);
203                         boolean facebookClickIds = sharedPreferences.getBoolean(FACEBOOK_CLICK_IDS, true);
204                         boolean twitterAmpRedirects = sharedPreferences.getBoolean(TWITTER_AMP_REDIRECTS, true);
205                         boolean wideViewport = sharedPreferences.getBoolean(WIDE_VIEWPORT, true);
206
207                         // Populate the preferences with the current Google Analytics value.
208                         if (googleAnalytics) {
209                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + GOOGLE_ANALYTICS + " = " + 1);
210                         } else {
211                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + GOOGLE_ANALYTICS + " = " + 0);
212                         }
213
214                         // Populate the preferences with the current Facebook Click IDs value.
215                         if (facebookClickIds) {
216                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + FACEBOOK_CLICK_IDS + " = " + 1);
217                         } else {
218                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + FACEBOOK_CLICK_IDS + " = " + 0);
219                         }
220
221                         // Populate the preferences table with the current Twitter AMP redirects value.
222                         if (twitterAmpRedirects) {
223                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + TWITTER_AMP_REDIRECTS + " = " + 1);
224                         } else {
225                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + TWITTER_AMP_REDIRECTS + " = " + 0);
226                         }
227
228                         // Populate the preferences table with the current wide viewport value.
229                         if (wideViewport) {
230                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + WIDE_VIEWPORT + " = " + 1);
231                         } else {
232                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + WIDE_VIEWPORT + " = " + 0);
233                         }
234
235                     // Upgrade from schema version 7, Privacy Browser 3.1.
236                     case 7:
237                         // Add the UltraList column to the domains table.
238                         importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.ULTRALIST + " BOOLEAN");
239
240                         // Add the UltraList column to the preferences table.
241                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + ULTRALIST + " BOOLEAN");
242
243                         // Get the current preference values.
244                         boolean ultraList = sharedPreferences.getBoolean(ULTRALIST, true);
245
246                         // Populate the preferences tables with the current UltraList value.
247                         if (ultraList) {
248                             importDatabase.execSQL("UPDATE " + DomainsDatabaseHelper.DOMAINS_TABLE + " SET " + DomainsDatabaseHelper.ULTRALIST + " = " + 1);
249                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + ULTRALIST + " = " + 1);
250                         } else {
251                             importDatabase.execSQL("UPDATE " + DomainsDatabaseHelper.DOMAINS_TABLE + " SET " + DomainsDatabaseHelper.ULTRALIST + " = " + 0);
252                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + ULTRALIST + " = " + 0);
253                         }
254
255                     // Upgrade from schema version 8, Privacy Browser 3.2.
256                     case 8:
257                         // Add the new proxy columns to the preferences table.
258                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + PROXY + " TEXT");
259                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + PROXY_CUSTOM_URL + " TEXT");
260
261                         // Get the current proxy values.
262                         String proxy = sharedPreferences.getString(PROXY, context.getString(R.string.proxy_default_value));
263                         String proxyCustomUrl = sharedPreferences.getString(PROXY_CUSTOM_URL, context.getString(R.string.proxy_custom_url_default_value));
264
265                         // SQL escape the proxy custom URL string.
266                         proxyCustomUrl = DatabaseUtils.sqlEscapeString(proxyCustomUrl);
267
268                         // Populate the preferences table with the current proxy values. The proxy custom URL does not need to be surrounded by `'` because it was SLQ escaped above.
269                         importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + PROXY + " = '" + proxy + "'");
270                         importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + PROXY_CUSTOM_URL + " = " + proxyCustomUrl);
271
272                     // Upgrade from schema version 9, Privacy Browser 3.3.
273                     case 9:
274                         // Previously this upgrade added `download_location` and `download_custom_location` to the Preferences table.  But they are now removed in schema version 13.
275
276                     // Upgrade from schema version 10, Privacy Browser 3.4.
277                     case 10:
278                         // Add the app theme column to the preferences table.
279                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + APP_THEME + " TEXT");
280
281                         // Get a cursor for the dark theme preference.
282                         Cursor darkThemePreferencesCursor = importDatabase.rawQuery("SELECT dark_theme FROM " + PREFERENCES_TABLE, null);
283
284                         // Move to the first preference.
285                         darkThemePreferencesCursor.moveToFirst();
286
287                         // Get the old dark theme value, which is in column 0.
288                         int darkTheme = darkThemePreferencesCursor.getInt(0);
289
290                         // Close the dark theme preference cursor.
291                         darkThemePreferencesCursor.close();
292
293                         // Populate the app theme according to the old dark theme preference.
294                         if (darkTheme == 0) {  // A light theme was selected.
295                             // Set the app theme to be the system default.
296                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + APP_THEME + " = 'System default'");
297                         } else {  // A dark theme was selected.
298                             // Set the app theme to be dark.
299                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + APP_THEME + " = 'Dark'");
300                         }
301
302                         // Add the WebView theme to the domains table.  This defaults to 0, which is `System default`, so a separate step isn't needed to populate the database.
303                         importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.WEBVIEW_THEME + " INTEGER");
304
305                         // Add the WebView theme to the preferences table.
306                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + WEBVIEW_THEME + " TEXT");
307
308                         // Get the WebView theme default value string.
309                         String webViewThemeDefaultValue = context.getString(R.string.webview_theme_default_value);
310
311                         // Set the WebView theme in the preferences table to be the default.
312                         importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + WEBVIEW_THEME + " = " + "'" + webViewThemeDefaultValue + "'");
313
314                     // Upgrade from schema version 11, Privacy Browser 3.5.
315                     case 11:
316                         // Add the clear logcat column to the preferences table.
317                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + CLEAR_LOGCAT + " BOOLEAN");
318
319                         // Get the current clear logcat value.
320                         boolean clearLogcat = sharedPreferences.getBoolean(CLEAR_LOGCAT, true);
321
322                         // Populate the preference table with the current clear logcat value.
323                         if (clearLogcat) {
324                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + CLEAR_LOGCAT + " = " + 1);
325                         } else {
326                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + CLEAR_LOGCAT + " = " + 0);
327                         }
328
329                     // Upgrade from schema version 12, Privacy Browser 3.6.
330                     case 12:
331                         // Do nothing.  `download_location` and `download_custom_location` were removed from the preferences table.
332
333                     // Upgrade from schema version 13, Privacy Browser 3.7
334                     case 13:
335                         // `enabledthirdpartycookies` was removed from the domains table.  `do_not_track` and `third_party_cookies` were removed from the preferences table.
336
337                         // 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>
338                         // <https://developer.android.com/reference/android/database/sqlite/package-summary>
339                         // 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.
340
341                         // Create the new cookies columns.
342                         importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.COOKIES + " BOOLEAN");
343                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + COOKIES + " BOOLEAN");
344
345                         // Copy the data from the old cookies columns to the new ones.
346                         importDatabase.execSQL("UPDATE " + DomainsDatabaseHelper.DOMAINS_TABLE + " SET " + DomainsDatabaseHelper.COOKIES + " = enablefirstpartycookies");
347                         importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + COOKIES + " = first_party_cookies");
348
349                         // Create the download with external app column.
350                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + DOWNLOAD_WITH_EXTERNAL_APP + " BOOLEAN");
351                 }
352             }
353
354             // Get a cursor for the bookmarks table.
355             Cursor importBookmarksCursor = importDatabase.rawQuery("SELECT * FROM " + BookmarksDatabaseHelper.BOOKMARKS_TABLE, null);
356
357             // Delete the current bookmarks database.
358             context.deleteDatabase(BookmarksDatabaseHelper.BOOKMARKS_DATABASE);
359
360             // Create a new bookmarks database.  The `0` specifies the database version, but that is ignored and set instead using a constant in `BookmarksDatabaseHelper`.
361             BookmarksDatabaseHelper bookmarksDatabaseHelper = new BookmarksDatabaseHelper(context, null, null, 0);
362
363             // Move to the first bookmark.
364             importBookmarksCursor.moveToFirst();
365
366             // Copy the data from the import bookmarks cursor into the bookmarks database.
367             for (int i = 0; i < importBookmarksCursor.getCount(); i++) {
368                 // Extract the record from the cursor and store the data in a ContentValues.
369                 ContentValues bookmarksContentValues = new ContentValues();
370                 bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_NAME, importBookmarksCursor.getString(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME)));
371                 bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_URL, importBookmarksCursor.getString(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_URL)));
372                 bookmarksContentValues.put(BookmarksDatabaseHelper.PARENT_FOLDER, importBookmarksCursor.getString(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.PARENT_FOLDER)));
373                 bookmarksContentValues.put(BookmarksDatabaseHelper.DISPLAY_ORDER, importBookmarksCursor.getInt(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.DISPLAY_ORDER)));
374                 bookmarksContentValues.put(BookmarksDatabaseHelper.IS_FOLDER, importBookmarksCursor.getInt(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.IS_FOLDER)));
375                 bookmarksContentValues.put(BookmarksDatabaseHelper.FAVORITE_ICON, importBookmarksCursor.getBlob(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.FAVORITE_ICON)));
376
377                 // Insert the record into the export database.
378                 bookmarksDatabaseHelper.createBookmark(bookmarksContentValues);
379
380                 // Advance to the next record.
381                 importBookmarksCursor.moveToNext();
382             }
383
384             // Close the bookmarks cursor.
385             importBookmarksCursor.close();
386
387             // Close the bookmarks database.
388             bookmarksDatabaseHelper.close();
389
390
391             // Get a cursor for the domains table.
392             Cursor importDomainsCursor = importDatabase.rawQuery("SELECT * FROM " + DomainsDatabaseHelper.DOMAINS_TABLE + " ORDER BY " + DomainsDatabaseHelper.DOMAIN_NAME + " ASC", null);
393
394             // Delete the current domains database.
395             context.deleteDatabase(DomainsDatabaseHelper.DOMAINS_DATABASE);
396
397             // Create a new domains database.  The `0` specifies the database version, but that is ignored and set instead using a constant in `DomainsDatabaseHelper`.
398             DomainsDatabaseHelper domainsDatabaseHelper = new DomainsDatabaseHelper(context, null, null, 0);
399
400             // Move to the first domain.
401             importDomainsCursor.moveToFirst();
402
403             // Copy the data from the import domains cursor into the domains database.
404             for (int i = 0; i < importDomainsCursor.getCount(); i++) {
405                 // Extract the record from the cursor and store the data in a ContentValues.
406                 ContentValues domainsContentValues = new ContentValues();
407                 domainsContentValues.put(DomainsDatabaseHelper.DOMAIN_NAME, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.DOMAIN_NAME)));
408                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_JAVASCRIPT, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_JAVASCRIPT)));
409                 domainsContentValues.put(DomainsDatabaseHelper.COOKIES, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.COOKIES)));
410                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_DOM_STORAGE, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_DOM_STORAGE)));
411                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FORM_DATA, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FORM_DATA)));
412                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_EASYLIST, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_EASYLIST)));
413                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_EASYPRIVACY, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_EASYPRIVACY)));
414                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST,
415                         importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST)));
416                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST,
417                         importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST)));
418                 domainsContentValues.put(DomainsDatabaseHelper.ULTRALIST, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ULTRALIST)));
419                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY)));
420                 domainsContentValues.put(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS,
421                         importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS)));
422                 domainsContentValues.put(DomainsDatabaseHelper.USER_AGENT, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.USER_AGENT)));
423                 domainsContentValues.put(DomainsDatabaseHelper.FONT_SIZE, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.FONT_SIZE)));
424                 domainsContentValues.put(DomainsDatabaseHelper.SWIPE_TO_REFRESH, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SWIPE_TO_REFRESH)));
425                 domainsContentValues.put(DomainsDatabaseHelper.WEBVIEW_THEME, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.WEBVIEW_THEME)));
426                 domainsContentValues.put(DomainsDatabaseHelper.WIDE_VIEWPORT, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.WIDE_VIEWPORT)));
427                 domainsContentValues.put(DomainsDatabaseHelper.DISPLAY_IMAGES, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.DISPLAY_IMAGES)));
428                 domainsContentValues.put(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE)));
429                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME)));
430                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION)));
431                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT,
432                         importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT)));
433                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME)));
434                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION)));
435                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT,
436                         importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT)));
437                 domainsContentValues.put(DomainsDatabaseHelper.SSL_START_DATE, importDomainsCursor.getLong(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_START_DATE)));
438                 domainsContentValues.put(DomainsDatabaseHelper.SSL_END_DATE, importDomainsCursor.getLong(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_END_DATE)));
439                 domainsContentValues.put(DomainsDatabaseHelper.PINNED_IP_ADDRESSES, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_IP_ADDRESSES)));
440                 domainsContentValues.put(DomainsDatabaseHelper.IP_ADDRESSES, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.IP_ADDRESSES)));
441
442                 // Insert the record into the export database.
443                 domainsDatabaseHelper.addDomain(domainsContentValues);
444
445                 // Advance to the next record.
446                 importDomainsCursor.moveToNext();
447             }
448
449             // Close the domains cursor.
450             importDomainsCursor.close();
451
452             // Close the domains database.
453             domainsDatabaseHelper.close();
454
455
456             // Get a cursor for the preferences table.
457             Cursor importPreferencesCursor = importDatabase.rawQuery("SELECT * FROM " + PREFERENCES_TABLE, null);
458
459             // Move to the first preference.
460             importPreferencesCursor.moveToFirst();
461
462             // Import the preference data.
463             sharedPreferences.edit()
464                     .putBoolean(JAVASCRIPT, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(JAVASCRIPT)) == 1)
465                     .putBoolean(COOKIES, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(COOKIES)) == 1)
466                     .putBoolean(DOM_STORAGE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(DOM_STORAGE)) == 1)
467                     // Save form data can be removed once the minimum API >= 26.
468                     .putBoolean(SAVE_FORM_DATA, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(SAVE_FORM_DATA)) == 1)
469                     .putString(USER_AGENT, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(USER_AGENT)))
470                     .putString(CUSTOM_USER_AGENT, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(CUSTOM_USER_AGENT)))
471                     .putBoolean(INCOGNITO_MODE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(INCOGNITO_MODE)) == 1)
472                     .putBoolean(ALLOW_SCREENSHOTS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(ALLOW_SCREENSHOTS)) == 1)
473                     .putBoolean(EASYLIST, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(EASYLIST)) == 1)
474                     .putBoolean(EASYPRIVACY, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(EASYPRIVACY)) == 1)
475                     .putBoolean(FANBOYS_ANNOYANCE_LIST, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(FANBOYS_ANNOYANCE_LIST)) == 1)
476                     .putBoolean(FANBOYS_SOCIAL_BLOCKING_LIST, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(FANBOYS_SOCIAL_BLOCKING_LIST)) == 1)
477                     .putBoolean(ULTRALIST, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(ULTRALIST)) == 1)
478                     .putBoolean(ULTRAPRIVACY, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(ULTRAPRIVACY)) == 1)
479                     .putBoolean(BLOCK_ALL_THIRD_PARTY_REQUESTS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(BLOCK_ALL_THIRD_PARTY_REQUESTS)) == 1)
480                     .putBoolean(GOOGLE_ANALYTICS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(GOOGLE_ANALYTICS)) == 1)
481                     .putBoolean(FACEBOOK_CLICK_IDS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(FACEBOOK_CLICK_IDS)) == 1)
482                     .putBoolean(TWITTER_AMP_REDIRECTS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(TWITTER_AMP_REDIRECTS)) == 1)
483                     .putString(SEARCH, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(SEARCH)))
484                     .putString(SEARCH_CUSTOM_URL, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(SEARCH_CUSTOM_URL)))
485                     .putString(PROXY, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(PROXY)))
486                     .putString(PROXY_CUSTOM_URL, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(PROXY_CUSTOM_URL)))
487                     .putBoolean(FULL_SCREEN_BROWSING_MODE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(FULL_SCREEN_BROWSING_MODE)) == 1)
488                     .putBoolean(HIDE_APP_BAR, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(HIDE_APP_BAR)) == 1)
489                     .putBoolean(CLEAR_EVERYTHING, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_EVERYTHING)) == 1)
490                     .putBoolean(CLEAR_COOKIES, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_COOKIES)) == 1)
491                     .putBoolean(CLEAR_DOM_STORAGE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_DOM_STORAGE)) == 1)
492                     // Clear form data can be removed once the minimum API >= 26.
493                     .putBoolean(CLEAR_FORM_DATA, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_FORM_DATA)) == 1)
494                     .putBoolean(CLEAR_LOGCAT, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_LOGCAT)) == 1)
495                     .putBoolean(CLEAR_CACHE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_CACHE)) == 1)
496                     .putString(HOMEPAGE, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(HOMEPAGE)))
497                     .putString(FONT_SIZE, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(FONT_SIZE)))
498                     .putBoolean(OPEN_INTENTS_IN_NEW_TAB, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(OPEN_INTENTS_IN_NEW_TAB)) == 1)
499                     .putBoolean(SWIPE_TO_REFRESH, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(SWIPE_TO_REFRESH)) == 1)
500                     .putBoolean(DOWNLOAD_WITH_EXTERNAL_APP, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(DOWNLOAD_WITH_EXTERNAL_APP)) == 1)
501                     .putBoolean(SCROLL_APP_BAR, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(SCROLL_APP_BAR)) == 1)
502                     .putBoolean(DISPLAY_ADDITIONAL_APP_BAR_ICONS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(DISPLAY_ADDITIONAL_APP_BAR_ICONS)) == 1)
503                     .putString(APP_THEME, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(APP_THEME)))
504                     .putString(WEBVIEW_THEME, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(WEBVIEW_THEME)))
505                     .putBoolean(WIDE_VIEWPORT, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(WIDE_VIEWPORT)) == 1)
506                     .putBoolean(DISPLAY_WEBPAGE_IMAGES, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(DISPLAY_WEBPAGE_IMAGES)) == 1)
507                     .apply();
508
509             // Close the preferences cursor.
510             importPreferencesCursor.close();
511
512             // Close the import database.
513             importDatabase.close();
514
515             // Delete the temporary import file database, journal, and other related auxiliary files.
516             SQLiteDatabase.deleteDatabase(temporaryImportFile);
517
518             // Import successful.
519             return IMPORT_SUCCESSFUL;
520         } catch (Exception exception) {
521             // Return the import error.
522             return exception.toString();
523         }
524     }
525
526     public String exportUnencrypted(OutputStream exportFileOutputStream, Context context) {
527         try {
528             // Create a temporary export file.
529             File temporaryExportFile = File.createTempFile("temporary_export_file", null, context.getCacheDir());
530
531             // Create the temporary export database.
532             SQLiteDatabase temporaryExportDatabase = SQLiteDatabase.openOrCreateDatabase(temporaryExportFile, null);
533
534             // Set the temporary export database version number.
535             temporaryExportDatabase.setVersion(SCHEMA_VERSION);
536
537
538             // Create the temporary export database bookmarks table.
539             temporaryExportDatabase.execSQL(BookmarksDatabaseHelper.CREATE_BOOKMARKS_TABLE);
540
541             // Open the bookmarks database.  The `0` specifies the database version, but that is ignored and set instead using a constant in `BookmarksDatabaseHelper`.
542             BookmarksDatabaseHelper bookmarksDatabaseHelper = new BookmarksDatabaseHelper(context, null, null, 0);
543
544             // Get a full bookmarks cursor.
545             Cursor bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarks();
546
547             // Move to the first bookmark.
548             bookmarksCursor.moveToFirst();
549
550             // Copy the data from the bookmarks cursor into the export database.
551             for (int i = 0; i < bookmarksCursor.getCount(); i++) {
552                 // Extract the record from the cursor and store the data in a ContentValues.
553                 ContentValues bookmarksContentValues = new ContentValues();
554                 bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_NAME, bookmarksCursor.getString(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME)));
555                 bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_URL, bookmarksCursor.getString(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_URL)));
556                 bookmarksContentValues.put(BookmarksDatabaseHelper.PARENT_FOLDER, bookmarksCursor.getString(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.PARENT_FOLDER)));
557                 bookmarksContentValues.put(BookmarksDatabaseHelper.DISPLAY_ORDER, bookmarksCursor.getInt(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.DISPLAY_ORDER)));
558                 bookmarksContentValues.put(BookmarksDatabaseHelper.IS_FOLDER, bookmarksCursor.getInt(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.IS_FOLDER)));
559                 bookmarksContentValues.put(BookmarksDatabaseHelper.FAVORITE_ICON, bookmarksCursor.getBlob(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.FAVORITE_ICON)));
560
561                 // Insert the record into the temporary export database.
562                 temporaryExportDatabase.insert(BookmarksDatabaseHelper.BOOKMARKS_TABLE, null, bookmarksContentValues);
563
564                 // Advance to the next record.
565                 bookmarksCursor.moveToNext();
566             }
567
568             // Close the bookmarks database.
569             bookmarksCursor.close();
570             bookmarksDatabaseHelper.close();
571
572
573             // Create the temporary export database domains table.
574             temporaryExportDatabase.execSQL(DomainsDatabaseHelper.CREATE_DOMAINS_TABLE);
575
576             // Open the domains database.  The `0` specifies the database version, but that is ignored and set instead using a constant in `DomainsDatabaseHelper`.
577             DomainsDatabaseHelper domainsDatabaseHelper = new DomainsDatabaseHelper(context, null, null, 0);
578
579             // Get a full domains database cursor.
580             Cursor domainsCursor = domainsDatabaseHelper.getCompleteCursorOrderedByDomain();
581
582             // Move to the first domain.
583             domainsCursor.moveToFirst();
584
585             // Copy the data from the domains cursor into the export database.
586             for (int i = 0; i < domainsCursor.getCount(); i++) {
587                 // Extract the record from the cursor and store the data in a ContentValues.
588                 ContentValues domainsContentValues = new ContentValues();
589                 domainsContentValues.put(DomainsDatabaseHelper.DOMAIN_NAME, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.DOMAIN_NAME)));
590                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_JAVASCRIPT, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_JAVASCRIPT)));
591                 domainsContentValues.put(DomainsDatabaseHelper.COOKIES, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.COOKIES)));
592                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_DOM_STORAGE, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_DOM_STORAGE)));
593                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FORM_DATA, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FORM_DATA)));
594                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_EASYLIST, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_EASYLIST)));
595                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_EASYPRIVACY, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_EASYPRIVACY)));
596                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST)));
597                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST)));
598                 domainsContentValues.put(DomainsDatabaseHelper.ULTRALIST, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ULTRALIST)));
599                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY)));
600                 domainsContentValues.put(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS)));
601                 domainsContentValues.put(DomainsDatabaseHelper.USER_AGENT, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.USER_AGENT)));
602                 domainsContentValues.put(DomainsDatabaseHelper.FONT_SIZE, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.FONT_SIZE)));
603                 domainsContentValues.put(DomainsDatabaseHelper.SWIPE_TO_REFRESH, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SWIPE_TO_REFRESH)));
604                 domainsContentValues.put(DomainsDatabaseHelper.WEBVIEW_THEME, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.WEBVIEW_THEME)));
605                 domainsContentValues.put(DomainsDatabaseHelper.WIDE_VIEWPORT, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.WIDE_VIEWPORT)));
606                 domainsContentValues.put(DomainsDatabaseHelper.DISPLAY_IMAGES, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.DISPLAY_IMAGES)));
607                 domainsContentValues.put(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE)));
608                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME)));
609                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION)));
610                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT)));
611                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME)));
612                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION)));
613                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT)));
614                 domainsContentValues.put(DomainsDatabaseHelper.SSL_START_DATE, domainsCursor.getLong(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_START_DATE)));
615                 domainsContentValues.put(DomainsDatabaseHelper.SSL_END_DATE, domainsCursor.getLong(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_END_DATE)));
616                 domainsContentValues.put(DomainsDatabaseHelper.PINNED_IP_ADDRESSES, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_IP_ADDRESSES)));
617                 domainsContentValues.put(DomainsDatabaseHelper.IP_ADDRESSES, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.IP_ADDRESSES)));
618
619                 // Insert the record into the temporary export database.
620                 temporaryExportDatabase.insert(DomainsDatabaseHelper.DOMAINS_TABLE, null, domainsContentValues);
621
622                 // Advance to the next record.
623                 domainsCursor.moveToNext();
624             }
625
626             // Close the domains database.
627             domainsCursor.close();
628             domainsDatabaseHelper.close();
629
630
631             // Prepare the preferences table SQL creation string.
632             String CREATE_PREFERENCES_TABLE = "CREATE TABLE " + PREFERENCES_TABLE + " (" +
633                     _ID + " INTEGER PRIMARY KEY, " +
634                     JAVASCRIPT + " BOOLEAN, " +
635                     COOKIES + " BOOLEAN, " +
636                     DOM_STORAGE + " BOOLEAN, " +
637                     SAVE_FORM_DATA + " BOOLEAN, " +
638                     USER_AGENT + " TEXT, " +
639                     CUSTOM_USER_AGENT + " TEXT, " +
640                     INCOGNITO_MODE + " BOOLEAN, " +
641                     ALLOW_SCREENSHOTS + " BOOLEAN, " +
642                     EASYLIST + " BOOLEAN, " +
643                     EASYPRIVACY + " BOOLEAN, " +
644                     FANBOYS_ANNOYANCE_LIST + " BOOLEAN, " +
645                     FANBOYS_SOCIAL_BLOCKING_LIST + " BOOLEAN, " +
646                     ULTRALIST + " BOOLEAN, " +
647                     ULTRAPRIVACY + " BOOLEAN, " +
648                     BLOCK_ALL_THIRD_PARTY_REQUESTS + " BOOLEAN, " +
649                     GOOGLE_ANALYTICS + " BOOLEAN, " +
650                     FACEBOOK_CLICK_IDS + " BOOLEAN, " +
651                     TWITTER_AMP_REDIRECTS + " BOOLEAN, " +
652                     SEARCH + " TEXT, " +
653                     SEARCH_CUSTOM_URL + " TEXT, " +
654                     PROXY + " TEXT, " +
655                     PROXY_CUSTOM_URL + " TEXT, " +
656                     FULL_SCREEN_BROWSING_MODE + " BOOLEAN, " +
657                     HIDE_APP_BAR + " BOOLEAN, " +
658                     CLEAR_EVERYTHING + " BOOLEAN, " +
659                     CLEAR_COOKIES + " BOOLEAN, " +
660                     CLEAR_DOM_STORAGE + " BOOLEAN, " +
661                     CLEAR_FORM_DATA + " BOOLEAN, " +
662                     CLEAR_LOGCAT + " BOOLEAN, " +
663                     CLEAR_CACHE + " BOOLEAN, " +
664                     HOMEPAGE + " TEXT, " +
665                     FONT_SIZE + " TEXT, " +
666                     OPEN_INTENTS_IN_NEW_TAB + " BOOLEAN, " +
667                     SWIPE_TO_REFRESH + " BOOLEAN, " +
668                     DOWNLOAD_WITH_EXTERNAL_APP + " BOOLEAN, " +
669                     SCROLL_APP_BAR + " BOOLEAN, " +
670                     DISPLAY_ADDITIONAL_APP_BAR_ICONS + " BOOLEAN, " +
671                     APP_THEME + " TEXT, " +
672                     WEBVIEW_THEME + " TEXT, " +
673                     WIDE_VIEWPORT + " BOOLEAN, " +
674                     DISPLAY_WEBPAGE_IMAGES + " BOOLEAN)";
675
676             // Create the temporary export database preferences table.
677             temporaryExportDatabase.execSQL(CREATE_PREFERENCES_TABLE);
678
679             // Get a handle for the shared preference.
680             SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
681
682             // Create a ContentValues with the preferences information.
683             ContentValues preferencesContentValues = new ContentValues();
684             preferencesContentValues.put(JAVASCRIPT, sharedPreferences.getBoolean(JAVASCRIPT, false));
685             preferencesContentValues.put(COOKIES, sharedPreferences.getBoolean(COOKIES, false));
686             preferencesContentValues.put(DOM_STORAGE, sharedPreferences.getBoolean(DOM_STORAGE, false));
687             preferencesContentValues.put(SAVE_FORM_DATA, sharedPreferences.getBoolean(SAVE_FORM_DATA, false));  // Save form data can be removed once the minimum API >= 26.
688             preferencesContentValues.put(USER_AGENT, sharedPreferences.getString(USER_AGENT, context.getString(R.string.user_agent_default_value)));
689             preferencesContentValues.put(CUSTOM_USER_AGENT, sharedPreferences.getString(CUSTOM_USER_AGENT, context.getString(R.string.custom_user_agent_default_value)));
690             preferencesContentValues.put(INCOGNITO_MODE, sharedPreferences.getBoolean(INCOGNITO_MODE, false));
691             preferencesContentValues.put(ALLOW_SCREENSHOTS, sharedPreferences.getBoolean(ALLOW_SCREENSHOTS, false));
692             preferencesContentValues.put(EASYLIST, sharedPreferences.getBoolean(EASYLIST, true));
693             preferencesContentValues.put(EASYPRIVACY, sharedPreferences.getBoolean(EASYPRIVACY, true));
694             preferencesContentValues.put(FANBOYS_ANNOYANCE_LIST, sharedPreferences.getBoolean(FANBOYS_ANNOYANCE_LIST, true));
695             preferencesContentValues.put(FANBOYS_SOCIAL_BLOCKING_LIST, sharedPreferences.getBoolean(FANBOYS_SOCIAL_BLOCKING_LIST, true));
696             preferencesContentValues.put(ULTRALIST, sharedPreferences.getBoolean(ULTRALIST, true));
697             preferencesContentValues.put(ULTRAPRIVACY, sharedPreferences.getBoolean(ULTRAPRIVACY, true));
698             preferencesContentValues.put(BLOCK_ALL_THIRD_PARTY_REQUESTS, sharedPreferences.getBoolean(BLOCK_ALL_THIRD_PARTY_REQUESTS, false));
699             preferencesContentValues.put(GOOGLE_ANALYTICS, sharedPreferences.getBoolean(GOOGLE_ANALYTICS, true));
700             preferencesContentValues.put(FACEBOOK_CLICK_IDS, sharedPreferences.getBoolean(FACEBOOK_CLICK_IDS, true));
701             preferencesContentValues.put(TWITTER_AMP_REDIRECTS, sharedPreferences.getBoolean(TWITTER_AMP_REDIRECTS, true));
702             preferencesContentValues.put(SEARCH, sharedPreferences.getString(SEARCH, context.getString(R.string.search_default_value)));
703             preferencesContentValues.put(SEARCH_CUSTOM_URL, sharedPreferences.getString(SEARCH_CUSTOM_URL, context.getString(R.string.search_custom_url_default_value)));
704             preferencesContentValues.put(PROXY, sharedPreferences.getString(PROXY, context.getString(R.string.proxy_default_value)));
705             preferencesContentValues.put(PROXY_CUSTOM_URL, sharedPreferences.getString(PROXY_CUSTOM_URL, context.getString(R.string.proxy_custom_url_default_value)));
706             preferencesContentValues.put(FULL_SCREEN_BROWSING_MODE, sharedPreferences.getBoolean(FULL_SCREEN_BROWSING_MODE, false));
707             preferencesContentValues.put(HIDE_APP_BAR, sharedPreferences.getBoolean(HIDE_APP_BAR, true));
708             preferencesContentValues.put(CLEAR_EVERYTHING, sharedPreferences.getBoolean(CLEAR_EVERYTHING, true));
709             preferencesContentValues.put(CLEAR_COOKIES, sharedPreferences.getBoolean(CLEAR_COOKIES, true));
710             preferencesContentValues.put(CLEAR_DOM_STORAGE, sharedPreferences.getBoolean(CLEAR_DOM_STORAGE, true));
711             preferencesContentValues.put(CLEAR_FORM_DATA, sharedPreferences.getBoolean(CLEAR_FORM_DATA, true));  // Clear form data can be removed once the minimum API >= 26.
712             preferencesContentValues.put(CLEAR_LOGCAT, sharedPreferences.getBoolean(CLEAR_LOGCAT, true));
713             preferencesContentValues.put(CLEAR_CACHE, sharedPreferences.getBoolean(CLEAR_CACHE, true));
714             preferencesContentValues.put(HOMEPAGE, sharedPreferences.getString(HOMEPAGE, context.getString(R.string.homepage_default_value)));
715             preferencesContentValues.put(FONT_SIZE, sharedPreferences.getString(FONT_SIZE, context.getString(R.string.font_size_default_value)));
716             preferencesContentValues.put(OPEN_INTENTS_IN_NEW_TAB, sharedPreferences.getBoolean(OPEN_INTENTS_IN_NEW_TAB, true));
717             preferencesContentValues.put(SWIPE_TO_REFRESH, sharedPreferences.getBoolean(SWIPE_TO_REFRESH, true));
718             preferencesContentValues.put(DOWNLOAD_WITH_EXTERNAL_APP, sharedPreferences.getBoolean(DOWNLOAD_WITH_EXTERNAL_APP, false));
719             preferencesContentValues.put(SCROLL_APP_BAR, sharedPreferences.getBoolean(SCROLL_APP_BAR, true));
720             preferencesContentValues.put(DISPLAY_ADDITIONAL_APP_BAR_ICONS, sharedPreferences.getBoolean(DISPLAY_ADDITIONAL_APP_BAR_ICONS, false));
721             preferencesContentValues.put(APP_THEME, sharedPreferences.getString(APP_THEME, context.getString(R.string.app_theme_default_value)));
722             preferencesContentValues.put(WEBVIEW_THEME, sharedPreferences.getString(WEBVIEW_THEME, context.getString(R.string.webview_theme_default_value)));
723             preferencesContentValues.put(WIDE_VIEWPORT, sharedPreferences.getBoolean(WIDE_VIEWPORT, true));
724             preferencesContentValues.put(DISPLAY_WEBPAGE_IMAGES, sharedPreferences.getBoolean(DISPLAY_WEBPAGE_IMAGES, true));
725
726             // Insert the preferences into the temporary export database.
727             temporaryExportDatabase.insert(PREFERENCES_TABLE, null, preferencesContentValues);
728
729             // Close the temporary export database.
730             temporaryExportDatabase.close();
731
732
733             // Create the temporary export file input stream.
734             FileInputStream temporaryExportFileInputStream = new FileInputStream(temporaryExportFile);
735
736             // Create a byte array.
737             byte[] transferByteArray = new byte[1024];
738
739             // Create an integer to track the number of bytes read.
740             int bytesRead;
741
742             // Copy the temporary export file to the export file output stream.
743             while ((bytesRead = temporaryExportFileInputStream.read(transferByteArray)) > 0) {
744                 exportFileOutputStream.write(transferByteArray, 0, bytesRead);
745             }
746
747             // Flush the export file output stream.
748             exportFileOutputStream.flush();
749
750             // Close the file streams.
751             temporaryExportFileInputStream.close();
752             exportFileOutputStream.close();
753
754             // Delete the temporary export file database, journal, and other related auxiliary files.
755             SQLiteDatabase.deleteDatabase(temporaryExportFile);
756
757             // Export successful.
758             return EXPORT_SUCCESSFUL;
759         } catch (Exception exception) {
760             // Return the export error.
761             return exception.toString();
762         }
763     }
764 }