b1aa0c61f61cc2edd07dd81eeadaa1fa893e66eb
[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 FIRST_PARTY_COOKIES = "first_party_cookies";
51     private static final String THIRD_PARTY_COOKIES = "third_party_cookies";
52     private static final String DOM_STORAGE = "dom_storage";
53     private static final String SAVE_FORM_DATA = "save_form_data";
54     private static final String USER_AGENT = "user_agent";
55     private static final String CUSTOM_USER_AGENT = "custom_user_agent";
56     private static final String INCOGNITO_MODE = "incognito_mode";
57     private static final String ALLOW_SCREENSHOTS = "allow_screenshots";
58     private static final String EASYLIST = "easylist";
59     private static final String EASYPRIVACY = "easyprivacy";
60     private static final String FANBOYS_ANNOYANCE_LIST = "fanboys_annoyance_list";
61     private static final String FANBOYS_SOCIAL_BLOCKING_LIST = "fanboys_social_blocking_list";
62     private static final String ULTRALIST = "ultralist";
63     private static final String ULTRAPRIVACY = "ultraprivacy";
64     private static final String BLOCK_ALL_THIRD_PARTY_REQUESTS = "block_all_third_party_requests";
65     private static final String GOOGLE_ANALYTICS = "google_analytics";
66     private static final String FACEBOOK_CLICK_IDS = "facebook_click_ids";
67     private static final String TWITTER_AMP_REDIRECTS = "twitter_amp_redirects";
68     private static final String SEARCH = "search";
69     private static final String SEARCH_CUSTOM_URL = "search_custom_url";
70     private static final String PROXY = "proxy";
71     private static final String PROXY_CUSTOM_URL = "proxy_custom_url";
72     private static final String FULL_SCREEN_BROWSING_MODE = "full_screen_browsing_mode";
73     private static final String HIDE_APP_BAR = "hide_app_bar";
74     private static final String CLEAR_EVERYTHING = "clear_everything";
75     private static final String CLEAR_COOKIES = "clear_cookies";
76     private static final String CLEAR_DOM_STORAGE = "clear_dom_storage";
77     private static final String CLEAR_FORM_DATA = "clear_form_data";
78     private static final String CLEAR_LOGCAT = "clear_logcat";
79     private static final String CLEAR_CACHE = "clear_cache";
80     private static final String HOMEPAGE = "homepage";
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 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                         // Get a cursor with the current `default_font_size` value.
141                         Cursor importDatabasePreferenceCursor = importDatabase.rawQuery("SELECT default_font_size FROM " + PREFERENCES_TABLE, null);
142
143                         // Move to the beginning fo the cursor.
144                         importDatabasePreferenceCursor.moveToFirst();
145
146                         // Get the current value in `default_font_size`.
147                         String fontSize = importDatabasePreferenceCursor.getString(importDatabasePreferenceCursor.getColumnIndex("default_font_size"));
148
149                         // SQL escape the font size.
150                         fontSize = DatabaseUtils.sqlEscapeString(fontSize);
151
152                         // Close the cursor.
153                         importDatabasePreferenceCursor.close();
154
155                         // Create the new font size column.
156                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + FONT_SIZE + " TEXT");
157
158                         // Populate the preferences table with the current font size value.
159                         importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + FONT_SIZE + " = '" + fontSize + "'");
160
161                     // Upgrade from schema version 3, Privacy Browser 2.15.
162                     case 3:
163                         // Add the Pinned IP Addresses columns to the domains table.
164                         importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.PINNED_IP_ADDRESSES + " BOOLEAN");
165                         importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.IP_ADDRESSES + " TEXT");
166
167                     // Upgrade from schema version 4, Privacy Browser 2.16.
168                     case 4:
169                         // Add the hide and scroll app bar columns to the preferences table.
170                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + HIDE_APP_BAR + " BOOLEAN");
171                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + SCROLL_APP_BAR + " BOOLEAN");
172
173                         // Get the current hide and scroll app bar settings.
174                         boolean hideAppBar = sharedPreferences.getBoolean(HIDE_APP_BAR, true);
175                         boolean scrollAppBar = sharedPreferences.getBoolean(SCROLL_APP_BAR, true);
176
177                         // Populate the preferences table with the current app bar values.
178                         if (hideAppBar) {
179                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + HIDE_APP_BAR + " = " + 1);
180                         } else {
181                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + HIDE_APP_BAR + " = " + 0);
182                         }
183
184                         if (scrollAppBar) {
185                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + SCROLL_APP_BAR + " = " + 1);
186                         } else {
187                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + SCROLL_APP_BAR + " = " + 0);
188                         }
189
190                     // Upgrade from schema version 5, Privacy Browser 2.17.
191                     case 5:
192                         // Add the open intents in new tab column to the preferences table.
193                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + OPEN_INTENTS_IN_NEW_TAB + " BOOLEAN");
194
195                         // Get the current open intents in new tab preference.
196                         boolean openIntentsInNewTab = sharedPreferences.getBoolean(OPEN_INTENTS_IN_NEW_TAB, true);
197
198                         // Populate the preferences table with the current open intents value.
199                         if (openIntentsInNewTab) {
200                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + OPEN_INTENTS_IN_NEW_TAB + " = " + 1);
201                         } else {
202                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + OPEN_INTENTS_IN_NEW_TAB + " = " + 0);
203                         }
204
205                     // Upgrade from schema version 6, Privacy Browser 3.0.
206                     case 6:
207                         // Add the wide viewport column to the domains table.
208                         importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.WIDE_VIEWPORT + " INTEGER");
209
210                         // Add the Google Analytics, Facebook Click IDs, Twitter AMP redirects, and wide viewport columns to the preferences table.
211                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + GOOGLE_ANALYTICS + " BOOLEAN");
212                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + FACEBOOK_CLICK_IDS + " BOOLEAN");
213                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + TWITTER_AMP_REDIRECTS + " BOOLEAN");
214                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + WIDE_VIEWPORT + " BOOLEAN");
215
216                         // Get the current preference values.
217                         boolean googleAnalytics = sharedPreferences.getBoolean(GOOGLE_ANALYTICS, true);
218                         boolean facebookClickIds = sharedPreferences.getBoolean(FACEBOOK_CLICK_IDS, true);
219                         boolean twitterAmpRedirects = sharedPreferences.getBoolean(TWITTER_AMP_REDIRECTS, true);
220                         boolean wideViewport = sharedPreferences.getBoolean(WIDE_VIEWPORT, true);
221
222                         // Populate the preferences with the current Google Analytics value.
223                         if (googleAnalytics) {
224                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + GOOGLE_ANALYTICS + " = " + 1);
225                         } else {
226                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + GOOGLE_ANALYTICS + " = " + 0);
227                         }
228
229                         // Populate the preferences with the current Facebook Click IDs value.
230                         if (facebookClickIds) {
231                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + FACEBOOK_CLICK_IDS + " = " + 1);
232                         } else {
233                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + FACEBOOK_CLICK_IDS + " = " + 0);
234                         }
235
236                         // Populate the preferences table with the current Twitter AMP redirects value.
237                         if (twitterAmpRedirects) {
238                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + TWITTER_AMP_REDIRECTS + " = " + 1);
239                         } else {
240                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + TWITTER_AMP_REDIRECTS + " = " + 0);
241                         }
242
243                         // Populate the preferences table with the current wide viewport value.
244                         if (wideViewport) {
245                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + WIDE_VIEWPORT + " = " + 1);
246                         } else {
247                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + WIDE_VIEWPORT + " = " + 0);
248                         }
249
250                     // Upgrade from schema version 7, Privacy Browser 3.1.
251                     case 7:
252                         // Add the UltraList column to the domains table.
253                         importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.ULTRALIST + " BOOLEAN");
254
255                         // Add the UltraList column to the preferences table.
256                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + ULTRALIST + " BOOLEAN");
257
258                         // Get the current preference values.
259                         boolean ultraList = sharedPreferences.getBoolean(ULTRALIST, true);
260
261                         // Populate the preferences tables with the current UltraList value.
262                         if (ultraList) {
263                             importDatabase.execSQL("UPDATE " + DomainsDatabaseHelper.DOMAINS_TABLE + " SET " + DomainsDatabaseHelper.ULTRALIST + " = " + 1);
264                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + ULTRALIST + " = " + 1);
265                         } else {
266                             importDatabase.execSQL("UPDATE " + DomainsDatabaseHelper.DOMAINS_TABLE + " SET " + DomainsDatabaseHelper.ULTRALIST + " = " + 0);
267                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + ULTRALIST + " = " + 0);
268                         }
269
270                     // Upgrade from schema version 8, Privacy Browser 3.2.
271                     case 8:
272                         // Add the new proxy columns to the preferences table.
273                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + PROXY + " TEXT");
274                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + PROXY_CUSTOM_URL + " TEXT");
275
276                         // Get the current proxy values.
277                         String proxy = sharedPreferences.getString(PROXY, context.getString(R.string.proxy_default_value));
278                         String proxyCustomUrl = sharedPreferences.getString(PROXY_CUSTOM_URL, context.getString(R.string.proxy_custom_url_default_value));
279
280                         // SQL escape the proxy custom URL string.
281                         proxyCustomUrl = DatabaseUtils.sqlEscapeString(proxyCustomUrl);
282
283                         // 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.
284                         importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + PROXY + " = '" + proxy + "'");
285                         importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + PROXY_CUSTOM_URL + " = " + proxyCustomUrl);
286
287                     // Upgrade from schema version 9, Privacy Browser 3.3.
288                     case 9:
289                         // Previously this upgrade added `download_location` and `download_custom_location` to the Preferences table.  But they are now removed in schema version 13.
290
291                     // Upgrade from schema version 10, Privacy Browser 3.4.
292                     case 10:
293                         // Add the app theme column to the preferences table.
294                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + APP_THEME + " TEXT");
295
296                         // Get a cursor for the dark theme preference.
297                         Cursor darkThemePreferencesCursor = importDatabase.rawQuery("SELECT dark_theme FROM " + PREFERENCES_TABLE, null);
298
299                         // Move to the first preference.
300                         darkThemePreferencesCursor.moveToFirst();
301
302                         // Get the old dark theme value, which is in column 0.
303                         int darkTheme = darkThemePreferencesCursor.getInt(0);
304
305                         // Close the dark theme preference cursor.
306                         darkThemePreferencesCursor.close();
307
308                         // Populate the app theme according to the old dark theme preference.
309                         if (darkTheme == 0) {  // A light theme was selected.
310                             // Set the app theme to be the system default.
311                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + APP_THEME + " = 'System default'");
312                         } else {  // A dark theme was selected.
313                             // Set the app theme to be dark.
314                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + APP_THEME + " = 'Dark'");
315                         }
316
317                         // 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.
318                         importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.WEBVIEW_THEME + " INTEGER");
319
320                         // Add the WebView theme to the preferences table.
321                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + WEBVIEW_THEME + " TEXT");
322
323                         // Get the WebView theme default value string.
324                         String webViewThemeDefaultValue = context.getString(R.string.webview_theme_default_value);
325
326                         // Set the WebView theme in the preferences table to be the default.
327                         importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + WEBVIEW_THEME + " = " + "'" + webViewThemeDefaultValue + "'");
328
329                     // Upgrade from schema version 11, Privacy Browser 3.5.
330                     case 11:
331                         // Add the clear logcat column to the preferences table.
332                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + CLEAR_LOGCAT + " BOOLEAN");
333
334                         // Get the current clear logcat value.
335                         boolean clearLogcat = sharedPreferences.getBoolean(CLEAR_LOGCAT, true);
336
337                         // Populate the preference table with the current clear logcat value.
338                         if (clearLogcat) {
339                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + CLEAR_LOGCAT + " = " + 1);
340                         } else {
341                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + CLEAR_LOGCAT + " = " + 0);
342                         }
343
344                     // Upgrade from schema version 12, Privacy Browser 3.6.
345                     case 12:
346                         // Do nothing.  `download_location` and `download_custom_location` were removed from the preferences table.
347
348                     // Upgrade from schema version 13, Privacy Browser 3.7
349                     case 13:
350                         // Do nothing.  `do_not_track` was removed from the preferences table.
351                 }
352             }
353
354
355             // Get a cursor for the bookmarks table.
356             Cursor importBookmarksCursor = importDatabase.rawQuery("SELECT * FROM " + BookmarksDatabaseHelper.BOOKMARKS_TABLE, null);
357
358             // Delete the current bookmarks database.
359             context.deleteDatabase(BookmarksDatabaseHelper.BOOKMARKS_DATABASE);
360
361             // Create a new bookmarks database.  The `0` specifies the database version, but that is ignored and set instead using a constant in `BookmarksDatabaseHelper`.
362             BookmarksDatabaseHelper bookmarksDatabaseHelper = new BookmarksDatabaseHelper(context, null, null, 0);
363
364             // Move to the first bookmark.
365             importBookmarksCursor.moveToFirst();
366
367             // Copy the data from the import bookmarks cursor into the bookmarks database.
368             for (int i = 0; i < importBookmarksCursor.getCount(); i++) {
369                 // Extract the record from the cursor and store the data in a ContentValues.
370                 ContentValues bookmarksContentValues = new ContentValues();
371                 bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_NAME, importBookmarksCursor.getString(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME)));
372                 bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_URL, importBookmarksCursor.getString(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_URL)));
373                 bookmarksContentValues.put(BookmarksDatabaseHelper.PARENT_FOLDER, importBookmarksCursor.getString(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.PARENT_FOLDER)));
374                 bookmarksContentValues.put(BookmarksDatabaseHelper.DISPLAY_ORDER, importBookmarksCursor.getInt(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.DISPLAY_ORDER)));
375                 bookmarksContentValues.put(BookmarksDatabaseHelper.IS_FOLDER, importBookmarksCursor.getInt(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.IS_FOLDER)));
376                 bookmarksContentValues.put(BookmarksDatabaseHelper.FAVORITE_ICON, importBookmarksCursor.getBlob(importBookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.FAVORITE_ICON)));
377
378                 // Insert the record into the export database.
379                 bookmarksDatabaseHelper.createBookmark(bookmarksContentValues);
380
381                 // Advance to the next record.
382                 importBookmarksCursor.moveToNext();
383             }
384
385             // Close the bookmarks cursor.
386             importBookmarksCursor.close();
387
388             // Close the bookmarks database.
389             bookmarksDatabaseHelper.close();
390
391
392             // Get a cursor for the domains table.
393             Cursor importDomainsCursor = importDatabase.rawQuery("SELECT * FROM " + DomainsDatabaseHelper.DOMAINS_TABLE + " ORDER BY " + DomainsDatabaseHelper.DOMAIN_NAME + " ASC", null);
394
395             // Delete the current domains database.
396             context.deleteDatabase(DomainsDatabaseHelper.DOMAINS_DATABASE);
397
398             // Create a new domains database.  The `0` specifies the database version, but that is ignored and set instead using a constant in `DomainsDatabaseHelper`.
399             DomainsDatabaseHelper domainsDatabaseHelper = new DomainsDatabaseHelper(context, null, null, 0);
400
401             // Move to the first domain.
402             importDomainsCursor.moveToFirst();
403
404             // Copy the data from the import domains cursor into the domains database.
405             for (int i = 0; i < importDomainsCursor.getCount(); i++) {
406                 // Extract the record from the cursor and store the data in a ContentValues.
407                 ContentValues domainsContentValues = new ContentValues();
408                 domainsContentValues.put(DomainsDatabaseHelper.DOMAIN_NAME, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.DOMAIN_NAME)));
409                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_JAVASCRIPT, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_JAVASCRIPT)));
410                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FIRST_PARTY_COOKIES, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FIRST_PARTY_COOKIES)));
411                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_THIRD_PARTY_COOKIES, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_THIRD_PARTY_COOKIES)));
412                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_DOM_STORAGE, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_DOM_STORAGE)));
413                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FORM_DATA, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FORM_DATA)));
414                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_EASYLIST, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_EASYLIST)));
415                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_EASYPRIVACY, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_EASYPRIVACY)));
416                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST,
417                         importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST)));
418                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST,
419                         importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST)));
420                 domainsContentValues.put(DomainsDatabaseHelper.ULTRALIST, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ULTRALIST)));
421                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY)));
422                 domainsContentValues.put(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS,
423                         importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS)));
424                 domainsContentValues.put(DomainsDatabaseHelper.USER_AGENT, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.USER_AGENT)));
425                 domainsContentValues.put(DomainsDatabaseHelper.FONT_SIZE, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.FONT_SIZE)));
426                 domainsContentValues.put(DomainsDatabaseHelper.SWIPE_TO_REFRESH, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SWIPE_TO_REFRESH)));
427                 domainsContentValues.put(DomainsDatabaseHelper.WEBVIEW_THEME, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.WEBVIEW_THEME)));
428                 domainsContentValues.put(DomainsDatabaseHelper.WIDE_VIEWPORT, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.WIDE_VIEWPORT)));
429                 domainsContentValues.put(DomainsDatabaseHelper.DISPLAY_IMAGES, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.DISPLAY_IMAGES)));
430                 domainsContentValues.put(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE)));
431                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME)));
432                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION)));
433                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT,
434                         importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT)));
435                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME)));
436                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION)));
437                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT,
438                         importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT)));
439                 domainsContentValues.put(DomainsDatabaseHelper.SSL_START_DATE, importDomainsCursor.getLong(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_START_DATE)));
440                 domainsContentValues.put(DomainsDatabaseHelper.SSL_END_DATE, importDomainsCursor.getLong(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_END_DATE)));
441                 domainsContentValues.put(DomainsDatabaseHelper.PINNED_IP_ADDRESSES, importDomainsCursor.getInt(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_IP_ADDRESSES)));
442                 domainsContentValues.put(DomainsDatabaseHelper.IP_ADDRESSES, importDomainsCursor.getString(importDomainsCursor.getColumnIndex(DomainsDatabaseHelper.IP_ADDRESSES)));
443
444                 // Insert the record into the export database.
445                 domainsDatabaseHelper.addDomain(domainsContentValues);
446
447                 // Advance to the next record.
448                 importDomainsCursor.moveToNext();
449             }
450
451             // Close the domains cursor.
452             importDomainsCursor.close();
453
454             // Close the domains database.
455             domainsDatabaseHelper.close();
456
457
458             // Get a cursor for the preferences table.
459             Cursor importPreferencesCursor = importDatabase.rawQuery("SELECT * FROM " + PREFERENCES_TABLE, null);
460
461             // Move to the first preference.
462             importPreferencesCursor.moveToFirst();
463
464             // Import the preference data.
465             sharedPreferences.edit()
466                     .putBoolean(JAVASCRIPT, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(JAVASCRIPT)) == 1)
467                     .putBoolean(FIRST_PARTY_COOKIES, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(FIRST_PARTY_COOKIES)) == 1)
468                     .putBoolean(THIRD_PARTY_COOKIES, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(THIRD_PARTY_COOKIES)) == 1)
469                     .putBoolean(DOM_STORAGE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(DOM_STORAGE)) == 1)
470                     // Save form data can be removed once the minimum API >= 26.
471                     .putBoolean(SAVE_FORM_DATA, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(SAVE_FORM_DATA)) == 1)
472                     .putString(USER_AGENT, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(USER_AGENT)))
473                     .putString(CUSTOM_USER_AGENT, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(CUSTOM_USER_AGENT)))
474                     .putBoolean(INCOGNITO_MODE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(INCOGNITO_MODE)) == 1)
475                     .putBoolean(ALLOW_SCREENSHOTS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(ALLOW_SCREENSHOTS)) == 1)
476                     .putBoolean(EASYLIST, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(EASYLIST)) == 1)
477                     .putBoolean(EASYPRIVACY, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(EASYPRIVACY)) == 1)
478                     .putBoolean(FANBOYS_ANNOYANCE_LIST, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(FANBOYS_ANNOYANCE_LIST)) == 1)
479                     .putBoolean(FANBOYS_SOCIAL_BLOCKING_LIST, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(FANBOYS_SOCIAL_BLOCKING_LIST)) == 1)
480                     .putBoolean(ULTRALIST, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(ULTRALIST)) == 1)
481                     .putBoolean(ULTRAPRIVACY, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(ULTRAPRIVACY)) == 1)
482                     .putBoolean(BLOCK_ALL_THIRD_PARTY_REQUESTS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(BLOCK_ALL_THIRD_PARTY_REQUESTS)) == 1)
483                     .putBoolean(GOOGLE_ANALYTICS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(GOOGLE_ANALYTICS)) == 1)
484                     .putBoolean(FACEBOOK_CLICK_IDS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(FACEBOOK_CLICK_IDS)) == 1)
485                     .putBoolean(TWITTER_AMP_REDIRECTS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(TWITTER_AMP_REDIRECTS)) == 1)
486                     .putString(SEARCH, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(SEARCH)))
487                     .putString(SEARCH_CUSTOM_URL, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(SEARCH_CUSTOM_URL)))
488                     .putString(PROXY, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(PROXY)))
489                     .putString(PROXY_CUSTOM_URL, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(PROXY_CUSTOM_URL)))
490                     .putBoolean(FULL_SCREEN_BROWSING_MODE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(FULL_SCREEN_BROWSING_MODE)) == 1)
491                     .putBoolean(HIDE_APP_BAR, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(HIDE_APP_BAR)) == 1)
492                     .putBoolean(CLEAR_EVERYTHING, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_EVERYTHING)) == 1)
493                     .putBoolean(CLEAR_COOKIES, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_COOKIES)) == 1)
494                     .putBoolean(CLEAR_DOM_STORAGE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_DOM_STORAGE)) == 1)
495                     // Clear form data can be removed once the minimum API >= 26.
496                     .putBoolean(CLEAR_FORM_DATA, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_FORM_DATA)) == 1)
497                     .putBoolean(CLEAR_LOGCAT, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_LOGCAT)) == 1)
498                     .putBoolean(CLEAR_CACHE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(CLEAR_CACHE)) == 1)
499                     .putString(HOMEPAGE, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(HOMEPAGE)))
500                     .putString(FONT_SIZE, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(FONT_SIZE)))
501                     .putBoolean(OPEN_INTENTS_IN_NEW_TAB, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(OPEN_INTENTS_IN_NEW_TAB)) == 1)
502                     .putBoolean(SWIPE_TO_REFRESH, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(SWIPE_TO_REFRESH)) == 1)
503                     .putBoolean(SCROLL_APP_BAR, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(SCROLL_APP_BAR)) == 1)
504                     .putBoolean(DISPLAY_ADDITIONAL_APP_BAR_ICONS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(DISPLAY_ADDITIONAL_APP_BAR_ICONS)) == 1)
505                     .putString(APP_THEME, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(APP_THEME)))
506                     .putString(WEBVIEW_THEME, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndex(WEBVIEW_THEME)))
507                     .putBoolean(WIDE_VIEWPORT, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(WIDE_VIEWPORT)) == 1)
508                     .putBoolean(DISPLAY_WEBPAGE_IMAGES, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndex(DISPLAY_WEBPAGE_IMAGES)) == 1)
509                     .apply();
510
511             // Close the preferences cursor.
512             importPreferencesCursor.close();
513
514             // Close the import database.
515             importDatabase.close();
516
517             // Delete the temporary import file database, journal, and other related auxiliary files.
518             SQLiteDatabase.deleteDatabase(temporaryImportFile);
519
520             // Import successful.
521             return IMPORT_SUCCESSFUL;
522         } catch (Exception exception) {
523             // Return the import error.
524             return exception.toString();
525         }
526     }
527
528     public String exportUnencrypted(OutputStream exportFileOutputStream, Context context) {
529         try {
530             // Create a temporary export file.
531             File temporaryExportFile = File.createTempFile("temporary_export_file", null, context.getCacheDir());
532
533             // Create the temporary export database.
534             SQLiteDatabase temporaryExportDatabase = SQLiteDatabase.openOrCreateDatabase(temporaryExportFile, null);
535
536             // Set the temporary export database version number.
537             temporaryExportDatabase.setVersion(SCHEMA_VERSION);
538
539
540             // Create the temporary export database bookmarks table.
541             temporaryExportDatabase.execSQL(BookmarksDatabaseHelper.CREATE_BOOKMARKS_TABLE);
542
543             // Open the bookmarks database.  The `0` specifies the database version, but that is ignored and set instead using a constant in `BookmarksDatabaseHelper`.
544             BookmarksDatabaseHelper bookmarksDatabaseHelper = new BookmarksDatabaseHelper(context, null, null, 0);
545
546             // Get a full bookmarks cursor.
547             Cursor bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarks();
548
549             // Move to the first bookmark.
550             bookmarksCursor.moveToFirst();
551
552             // Copy the data from the bookmarks cursor into the export database.
553             for (int i = 0; i < bookmarksCursor.getCount(); i++) {
554                 // Extract the record from the cursor and store the data in a ContentValues.
555                 ContentValues bookmarksContentValues = new ContentValues();
556                 bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_NAME, bookmarksCursor.getString(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME)));
557                 bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_URL, bookmarksCursor.getString(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_URL)));
558                 bookmarksContentValues.put(BookmarksDatabaseHelper.PARENT_FOLDER, bookmarksCursor.getString(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.PARENT_FOLDER)));
559                 bookmarksContentValues.put(BookmarksDatabaseHelper.DISPLAY_ORDER, bookmarksCursor.getInt(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.DISPLAY_ORDER)));
560                 bookmarksContentValues.put(BookmarksDatabaseHelper.IS_FOLDER, bookmarksCursor.getInt(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.IS_FOLDER)));
561                 bookmarksContentValues.put(BookmarksDatabaseHelper.FAVORITE_ICON, bookmarksCursor.getBlob(bookmarksCursor.getColumnIndex(BookmarksDatabaseHelper.FAVORITE_ICON)));
562
563                 // Insert the record into the temporary export database.
564                 temporaryExportDatabase.insert(BookmarksDatabaseHelper.BOOKMARKS_TABLE, null, bookmarksContentValues);
565
566                 // Advance to the next record.
567                 bookmarksCursor.moveToNext();
568             }
569
570             // Close the bookmarks database.
571             bookmarksCursor.close();
572             bookmarksDatabaseHelper.close();
573
574
575             // Create the temporary export database domains table.
576             temporaryExportDatabase.execSQL(DomainsDatabaseHelper.CREATE_DOMAINS_TABLE);
577
578             // Open the 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             // Get a full domains database cursor.
582             Cursor domainsCursor = domainsDatabaseHelper.getCompleteCursorOrderedByDomain();
583
584             // Move to the first domain.
585             domainsCursor.moveToFirst();
586
587             // Copy the data from the domains cursor into the export database.
588             for (int i = 0; i < domainsCursor.getCount(); i++) {
589                 // Extract the record from the cursor and store the data in a ContentValues.
590                 ContentValues domainsContentValues = new ContentValues();
591                 domainsContentValues.put(DomainsDatabaseHelper.DOMAIN_NAME, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.DOMAIN_NAME)));
592                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_JAVASCRIPT, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_JAVASCRIPT)));
593                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FIRST_PARTY_COOKIES, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FIRST_PARTY_COOKIES)));
594                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_THIRD_PARTY_COOKIES, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_THIRD_PARTY_COOKIES)));
595                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_DOM_STORAGE, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_DOM_STORAGE)));
596                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FORM_DATA, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FORM_DATA)));
597                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_EASYLIST, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_EASYLIST)));
598                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_EASYPRIVACY, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_EASYPRIVACY)));
599                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST)));
600                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST)));
601                 domainsContentValues.put(DomainsDatabaseHelper.ULTRALIST, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ULTRALIST)));
602                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY)));
603                 domainsContentValues.put(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS)));
604                 domainsContentValues.put(DomainsDatabaseHelper.USER_AGENT, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.USER_AGENT)));
605                 domainsContentValues.put(DomainsDatabaseHelper.FONT_SIZE, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.FONT_SIZE)));
606                 domainsContentValues.put(DomainsDatabaseHelper.SWIPE_TO_REFRESH, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SWIPE_TO_REFRESH)));
607                 domainsContentValues.put(DomainsDatabaseHelper.WEBVIEW_THEME, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.WEBVIEW_THEME)));
608                 domainsContentValues.put(DomainsDatabaseHelper.WIDE_VIEWPORT, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.WIDE_VIEWPORT)));
609                 domainsContentValues.put(DomainsDatabaseHelper.DISPLAY_IMAGES, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.DISPLAY_IMAGES)));
610                 domainsContentValues.put(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE)));
611                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME)));
612                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION)));
613                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT)));
614                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME)));
615                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION)));
616                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT)));
617                 domainsContentValues.put(DomainsDatabaseHelper.SSL_START_DATE, domainsCursor.getLong(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_START_DATE)));
618                 domainsContentValues.put(DomainsDatabaseHelper.SSL_END_DATE, domainsCursor.getLong(domainsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_END_DATE)));
619                 domainsContentValues.put(DomainsDatabaseHelper.PINNED_IP_ADDRESSES, domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_IP_ADDRESSES)));
620                 domainsContentValues.put(DomainsDatabaseHelper.IP_ADDRESSES, domainsCursor.getString(domainsCursor.getColumnIndex(DomainsDatabaseHelper.IP_ADDRESSES)));
621
622                 // Insert the record into the temporary export database.
623                 temporaryExportDatabase.insert(DomainsDatabaseHelper.DOMAINS_TABLE, null, domainsContentValues);
624
625                 // Advance to the next record.
626                 domainsCursor.moveToNext();
627             }
628
629             // Close the domains database.
630             domainsCursor.close();
631             domainsDatabaseHelper.close();
632
633
634             // Prepare the preferences table SQL creation string.
635             String CREATE_PREFERENCES_TABLE = "CREATE TABLE " + PREFERENCES_TABLE + " (" +
636                     _ID + " INTEGER PRIMARY KEY, " +
637                     JAVASCRIPT + " BOOLEAN, " +
638                     FIRST_PARTY_COOKIES + " BOOLEAN, " +
639                     THIRD_PARTY_COOKIES + " BOOLEAN, " +
640                     DOM_STORAGE + " BOOLEAN, " +
641                     SAVE_FORM_DATA + " BOOLEAN, " +
642                     USER_AGENT + " TEXT, " +
643                     CUSTOM_USER_AGENT + " TEXT, " +
644                     INCOGNITO_MODE + " BOOLEAN, " +
645                     ALLOW_SCREENSHOTS + " BOOLEAN, " +
646                     EASYLIST + " BOOLEAN, " +
647                     EASYPRIVACY + " BOOLEAN, " +
648                     FANBOYS_ANNOYANCE_LIST + " BOOLEAN, " +
649                     FANBOYS_SOCIAL_BLOCKING_LIST + " BOOLEAN, " +
650                     ULTRALIST + " BOOLEAN, " +
651                     ULTRAPRIVACY + " BOOLEAN, " +
652                     BLOCK_ALL_THIRD_PARTY_REQUESTS + " BOOLEAN, " +
653                     GOOGLE_ANALYTICS + " BOOLEAN, " +
654                     FACEBOOK_CLICK_IDS + " BOOLEAN, " +
655                     TWITTER_AMP_REDIRECTS + " BOOLEAN, " +
656                     SEARCH + " TEXT, " +
657                     SEARCH_CUSTOM_URL + " TEXT, " +
658                     PROXY + " TEXT, " +
659                     PROXY_CUSTOM_URL + " TEXT, " +
660                     FULL_SCREEN_BROWSING_MODE + " BOOLEAN, " +
661                     HIDE_APP_BAR + " BOOLEAN, " +
662                     CLEAR_EVERYTHING + " BOOLEAN, " +
663                     CLEAR_COOKIES + " BOOLEAN, " +
664                     CLEAR_DOM_STORAGE + " BOOLEAN, " +
665                     CLEAR_FORM_DATA + " BOOLEAN, " +
666                     CLEAR_LOGCAT + " BOOLEAN, " +
667                     CLEAR_CACHE + " BOOLEAN, " +
668                     HOMEPAGE + " TEXT, " +
669                     FONT_SIZE + " TEXT, " +
670                     OPEN_INTENTS_IN_NEW_TAB + " BOOLEAN, " +
671                     SWIPE_TO_REFRESH + " BOOLEAN, " +
672                     SCROLL_APP_BAR + " BOOLEAN, " +
673                     DISPLAY_ADDITIONAL_APP_BAR_ICONS + " BOOLEAN, " +
674                     APP_THEME + " TEXT, " +
675                     WEBVIEW_THEME + " TEXT, " +
676                     WIDE_VIEWPORT + " BOOLEAN, " +
677                     DISPLAY_WEBPAGE_IMAGES + " BOOLEAN)";
678
679             // Create the temporary export database preferences table.
680             temporaryExportDatabase.execSQL(CREATE_PREFERENCES_TABLE);
681
682             // Get a handle for the shared preference.
683             SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
684
685             // Create a ContentValues with the preferences information.
686             ContentValues preferencesContentValues = new ContentValues();
687             preferencesContentValues.put(JAVASCRIPT, sharedPreferences.getBoolean(JAVASCRIPT, false));
688             preferencesContentValues.put(FIRST_PARTY_COOKIES, sharedPreferences.getBoolean(FIRST_PARTY_COOKIES, false));
689             preferencesContentValues.put(THIRD_PARTY_COOKIES, sharedPreferences.getBoolean(THIRD_PARTY_COOKIES, false));
690             preferencesContentValues.put(DOM_STORAGE, sharedPreferences.getBoolean(DOM_STORAGE, false));
691             preferencesContentValues.put(SAVE_FORM_DATA, sharedPreferences.getBoolean(SAVE_FORM_DATA, false));  // Save form data can be removed once the minimum API >= 26.
692             preferencesContentValues.put(USER_AGENT, sharedPreferences.getString(USER_AGENT, context.getString(R.string.user_agent_default_value)));
693             preferencesContentValues.put(CUSTOM_USER_AGENT, sharedPreferences.getString(CUSTOM_USER_AGENT, context.getString(R.string.custom_user_agent_default_value)));
694             preferencesContentValues.put(INCOGNITO_MODE, sharedPreferences.getBoolean(INCOGNITO_MODE, false));
695             preferencesContentValues.put(ALLOW_SCREENSHOTS, sharedPreferences.getBoolean(ALLOW_SCREENSHOTS, false));
696             preferencesContentValues.put(EASYLIST, sharedPreferences.getBoolean(EASYLIST, true));
697             preferencesContentValues.put(EASYPRIVACY, sharedPreferences.getBoolean(EASYPRIVACY, true));
698             preferencesContentValues.put(FANBOYS_ANNOYANCE_LIST, sharedPreferences.getBoolean(FANBOYS_ANNOYANCE_LIST, true));
699             preferencesContentValues.put(FANBOYS_SOCIAL_BLOCKING_LIST, sharedPreferences.getBoolean(FANBOYS_SOCIAL_BLOCKING_LIST, true));
700             preferencesContentValues.put(ULTRALIST, sharedPreferences.getBoolean(ULTRALIST, true));
701             preferencesContentValues.put(ULTRAPRIVACY, sharedPreferences.getBoolean(ULTRAPRIVACY, true));
702             preferencesContentValues.put(BLOCK_ALL_THIRD_PARTY_REQUESTS, sharedPreferences.getBoolean(BLOCK_ALL_THIRD_PARTY_REQUESTS, false));
703             preferencesContentValues.put(GOOGLE_ANALYTICS, sharedPreferences.getBoolean(GOOGLE_ANALYTICS, true));
704             preferencesContentValues.put(FACEBOOK_CLICK_IDS, sharedPreferences.getBoolean(FACEBOOK_CLICK_IDS, true));
705             preferencesContentValues.put(TWITTER_AMP_REDIRECTS, sharedPreferences.getBoolean(TWITTER_AMP_REDIRECTS, true));
706             preferencesContentValues.put(SEARCH, sharedPreferences.getString(SEARCH, context.getString(R.string.search_default_value)));
707             preferencesContentValues.put(SEARCH_CUSTOM_URL, sharedPreferences.getString(SEARCH_CUSTOM_URL, context.getString(R.string.search_custom_url_default_value)));
708             preferencesContentValues.put(PROXY, sharedPreferences.getString(PROXY, context.getString(R.string.proxy_default_value)));
709             preferencesContentValues.put(PROXY_CUSTOM_URL, sharedPreferences.getString(PROXY_CUSTOM_URL, context.getString(R.string.proxy_custom_url_default_value)));
710             preferencesContentValues.put(FULL_SCREEN_BROWSING_MODE, sharedPreferences.getBoolean(FULL_SCREEN_BROWSING_MODE, false));
711             preferencesContentValues.put(HIDE_APP_BAR, sharedPreferences.getBoolean(HIDE_APP_BAR, true));
712             preferencesContentValues.put(CLEAR_EVERYTHING, sharedPreferences.getBoolean(CLEAR_EVERYTHING, true));
713             preferencesContentValues.put(CLEAR_COOKIES, sharedPreferences.getBoolean(CLEAR_COOKIES, true));
714             preferencesContentValues.put(CLEAR_DOM_STORAGE, sharedPreferences.getBoolean(CLEAR_DOM_STORAGE, true));
715             preferencesContentValues.put(CLEAR_FORM_DATA, sharedPreferences.getBoolean(CLEAR_FORM_DATA, true));  // Clear form data can be removed once the minimum API >= 26.
716             preferencesContentValues.put(CLEAR_LOGCAT, sharedPreferences.getBoolean(CLEAR_LOGCAT, true));
717             preferencesContentValues.put(CLEAR_CACHE, sharedPreferences.getBoolean(CLEAR_CACHE, true));
718             preferencesContentValues.put(HOMEPAGE, sharedPreferences.getString(HOMEPAGE, context.getString(R.string.homepage_default_value)));
719             preferencesContentValues.put(FONT_SIZE, sharedPreferences.getString(FONT_SIZE, context.getString(R.string.font_size_default_value)));
720             preferencesContentValues.put(OPEN_INTENTS_IN_NEW_TAB, sharedPreferences.getBoolean(OPEN_INTENTS_IN_NEW_TAB, true));
721             preferencesContentValues.put(SWIPE_TO_REFRESH, sharedPreferences.getBoolean(SWIPE_TO_REFRESH, true));
722             preferencesContentValues.put(SCROLL_APP_BAR, sharedPreferences.getBoolean(SCROLL_APP_BAR, true));
723             preferencesContentValues.put(DISPLAY_ADDITIONAL_APP_BAR_ICONS, sharedPreferences.getBoolean(DISPLAY_ADDITIONAL_APP_BAR_ICONS, false));
724             preferencesContentValues.put(APP_THEME, sharedPreferences.getString(APP_THEME, context.getString(R.string.app_theme_default_value)));
725             preferencesContentValues.put(WEBVIEW_THEME, sharedPreferences.getString(WEBVIEW_THEME, context.getString(R.string.webview_theme_default_value)));
726             preferencesContentValues.put(WIDE_VIEWPORT, sharedPreferences.getBoolean(WIDE_VIEWPORT, true));
727             preferencesContentValues.put(DISPLAY_WEBPAGE_IMAGES, sharedPreferences.getBoolean(DISPLAY_WEBPAGE_IMAGES, true));
728
729             // Insert the preferences into the temporary export database.
730             temporaryExportDatabase.insert(PREFERENCES_TABLE, null, preferencesContentValues);
731
732             // Close the temporary export database.
733             temporaryExportDatabase.close();
734
735
736             // Create the temporary export file input stream.
737             FileInputStream temporaryExportFileInputStream = new FileInputStream(temporaryExportFile);
738
739             // Create a byte array.
740             byte[] transferByteArray = new byte[1024];
741
742             // Create an integer to track the number of bytes read.
743             int bytesRead;
744
745             // Copy the temporary export file to the export file output stream.
746             while ((bytesRead = temporaryExportFileInputStream.read(transferByteArray)) > 0) {
747                 exportFileOutputStream.write(transferByteArray, 0, bytesRead);
748             }
749
750             // Flush the export file output stream.
751             exportFileOutputStream.flush();
752
753             // Close the file streams.
754             temporaryExportFileInputStream.close();
755             exportFileOutputStream.close();
756
757             // Delete the temporary export file database, journal, and other related auxiliary files.
758             SQLiteDatabase.deleteDatabase(temporaryExportFile);
759
760             // Export successful.
761             return EXPORT_SUCCESSFUL;
762         } catch (Exception exception) {
763             // Return the export error.
764             return exception.toString();
765         }
766     }
767 }