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 BOTTOM_APP_BAR = "bottom_app_bar";
  86     private static final String DISPLAY_ADDITIONAL_APP_BAR_ICONS = "display_additional_app_bar_icons";
  87     private static final String APP_THEME = "app_theme";
  88     private static final String WEBVIEW_THEME = "webview_theme";
  89     private static final String WIDE_VIEWPORT = "wide_viewport";
  90     private static final String DISPLAY_WEBPAGE_IMAGES = "display_webpage_images";
  91
  92     public String importUnencrypted(InputStream importFileInputStream, Context context){
  93         try {
  94             // Create a temporary import file.
  95             File temporaryImportFile = File.createTempFile("temporary_import_file", null, context.getCacheDir());
  96
  97             // Create a temporary file output stream.
  98             FileOutputStream temporaryImportFileOutputStream = new FileOutputStream(temporaryImportFile);
  99
 100             // Create a transfer byte array.
 101             byte[] transferByteArray = new byte[1024];
 102
 103             // Create an integer to track the number of bytes read.
 104             int bytesRead;
 105
 106             // Copy the import file to the temporary import file.
 107             while ((bytesRead = importFileInputStream.read(transferByteArray)) > 0) {
 108                 temporaryImportFileOutputStream.write(transferByteArray, 0, bytesRead);
 109             }
 110
 111             // Flush the temporary import file output stream.
 112             temporaryImportFileOutputStream.flush();
 113
 114             // Close the file streams.
 115             importFileInputStream.close();
 116             temporaryImportFileOutputStream.close();
 117
 118
 119             // Get a handle for the shared preference.
 120             SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
 121
 122             // Open the import database.  Once the minimum API >= 27 the file can be opened directly without using the string.
 123             SQLiteDatabase importDatabase = SQLiteDatabase.openDatabase(temporaryImportFile.toString(), null, SQLiteDatabase.OPEN_READWRITE);
 124
 125             // Get the database version.
 126             int importDatabaseVersion = importDatabase.getVersion();
 127
 128             // Upgrade the database if needed.
 129             if (importDatabaseVersion < SCHEMA_VERSION) {
 130                 switch (importDatabaseVersion) {
 131                     // Upgrade from schema version 1, Privacy Browser 2.13.
 132                     case 1:
 133                         // Previously this upgrade added `download_with_external_app` to the Preferences table.  But that is now removed in schema version 10.
 134
 135                     // Upgrade from schema version 2, Privacy Browser 2.14.
 136                     case 2:
 137                         // 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>
 138                         // <https://developer.android.com/reference/android/database/sqlite/package-summary>
 139                         // 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.
 140
 141                         // Create the new font size column.
 142                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + FONT_SIZE + " TEXT");
 143
 144                         // Populate the preferences table with the current font size value.
 145                         importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + FONT_SIZE + " = default_font_size");
 146
 147                     // Upgrade from schema version 3, Privacy Browser 2.15.
 148                     case 3:
 149                         // Add the Pinned IP Addresses columns to the domains table.
 150                         importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.PINNED_IP_ADDRESSES + " BOOLEAN");
 151                         importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.IP_ADDRESSES + " TEXT");
 152
 153                     // Upgrade from schema version 4, Privacy Browser 2.16.
 154                     case 4:
 155                         // Add the hide and scroll app bar columns to the preferences table.
 156                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + HIDE_APP_BAR + " BOOLEAN");
 157                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + SCROLL_APP_BAR + " BOOLEAN");
 158
 159                         // Get the current hide and scroll app bar settings.
 160                         boolean hideAppBar = sharedPreferences.getBoolean(HIDE_APP_BAR, true);
 161                         boolean scrollAppBar = sharedPreferences.getBoolean(SCROLL_APP_BAR, true);
 162
 163                         // Populate the preferences table with the current app bar values.
 164                         if (hideAppBar) {
 165                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + HIDE_APP_BAR + " = " + 1);
 166                         } else {
 167                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + HIDE_APP_BAR + " = " + 0);
 168                         }
 169
 170                         if (scrollAppBar) {
 171                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + SCROLL_APP_BAR + " = " + 1);
 172                         } else {
 173                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + SCROLL_APP_BAR + " = " + 0);
 174                         }
 175
 176                     // Upgrade from schema version 5, Privacy Browser 2.17.
 177                     case 5:
 178                         // Add the open intents in new tab column to the preferences table.
 179                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + OPEN_INTENTS_IN_NEW_TAB + " BOOLEAN");
 180
 181                         // Get the current open intents in new tab preference.
 182                         boolean openIntentsInNewTab = sharedPreferences.getBoolean(OPEN_INTENTS_IN_NEW_TAB, true);
 183
 184                         // Populate the preferences table with the current open intents value.
 185                         if (openIntentsInNewTab) {
 186                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + OPEN_INTENTS_IN_NEW_TAB + " = " + 1);
 187                         } else {
 188                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + OPEN_INTENTS_IN_NEW_TAB + " = " + 0);
 189                         }
 190
 191                     // Upgrade from schema version 6, Privacy Browser 3.0.
 192                     case 6:
 193                         // Add the wide viewport column to the domains table.
 194                         importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.WIDE_VIEWPORT + " INTEGER");
 195
 196                         // Add the Google Analytics, Facebook Click IDs, Twitter AMP redirects, and wide viewport columns to the preferences table.
 197                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + GOOGLE_ANALYTICS + " BOOLEAN");
 198                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + FACEBOOK_CLICK_IDS + " BOOLEAN");
 199                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + TWITTER_AMP_REDIRECTS + " BOOLEAN");
 200                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + WIDE_VIEWPORT + " BOOLEAN");
 201
 202                         // Get the current preference values.
 203                         boolean googleAnalytics = sharedPreferences.getBoolean(GOOGLE_ANALYTICS, true);
 204                         boolean facebookClickIds = sharedPreferences.getBoolean(FACEBOOK_CLICK_IDS, true);
 205                         boolean twitterAmpRedirects = sharedPreferences.getBoolean(TWITTER_AMP_REDIRECTS, true);
 206                         boolean wideViewport = sharedPreferences.getBoolean(WIDE_VIEWPORT, true);
 207
 208                         // Populate the preferences with the current Google Analytics value.
 209                         if (googleAnalytics) {
 210                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + GOOGLE_ANALYTICS + " = " + 1);
 211                         } else {
 212                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + GOOGLE_ANALYTICS + " = " + 0);
 213                         }
 214
 215                         // Populate the preferences with the current Facebook Click IDs value.
 216                         if (facebookClickIds) {
 217                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + FACEBOOK_CLICK_IDS + " = " + 1);
 218                         } else {
 219                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + FACEBOOK_CLICK_IDS + " = " + 0);
 220                         }
 221
 222                         // Populate the preferences table with the current Twitter AMP redirects value.
 223                         if (twitterAmpRedirects) {
 224                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + TWITTER_AMP_REDIRECTS + " = " + 1);
 225                         } else {
 226                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + TWITTER_AMP_REDIRECTS + " = " + 0);
 227                         }
 228
 229                         // Populate the preferences table with the current wide viewport value.
 230                         if (wideViewport) {
 231                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + WIDE_VIEWPORT + " = " + 1);
 232                         } else {
 233                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + WIDE_VIEWPORT + " = " + 0);
 234                         }
 235
 236                     // Upgrade from schema version 7, Privacy Browser 3.1.
 237                     case 7:
 238                         // Add the UltraList column to the domains table.
 239                         importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.ULTRALIST + " BOOLEAN");
 240
 241                         // Add the UltraList column to the preferences table.
 242                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + ULTRALIST + " BOOLEAN");
 243
 244                         // Get the current preference values.
 245                         boolean ultraList = sharedPreferences.getBoolean(ULTRALIST, true);
 246
 247                         // Populate the preferences tables with the current UltraList value.
 248                         if (ultraList) {
 249                             importDatabase.execSQL("UPDATE " + DomainsDatabaseHelper.DOMAINS_TABLE + " SET " + DomainsDatabaseHelper.ULTRALIST + " = " + 1);
 250                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + ULTRALIST + " = " + 1);
 251                         } else {
 252                             importDatabase.execSQL("UPDATE " + DomainsDatabaseHelper.DOMAINS_TABLE + " SET " + DomainsDatabaseHelper.ULTRALIST + " = " + 0);
 253                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + ULTRALIST + " = " + 0);
 254                         }
 255
 256                     // Upgrade from schema version 8, Privacy Browser 3.2.
 257                     case 8:
 258                         // Add the new proxy columns to the preferences table.
 259                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + PROXY + " TEXT");
 260                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + PROXY_CUSTOM_URL + " TEXT");
 261
 262                         // Get the current proxy values.
 263                         String proxy = sharedPreferences.getString(PROXY, context.getString(R.string.proxy_default_value));
 264                         String proxyCustomUrl = sharedPreferences.getString(PROXY_CUSTOM_URL, context.getString(R.string.proxy_custom_url_default_value));
 265
 266                         // SQL escape the proxy custom URL string.
 267                         proxyCustomUrl = DatabaseUtils.sqlEscapeString(proxyCustomUrl);
 268
 269                         // 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.
 270                         importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + PROXY + " = '" + proxy + "'");
 271                         importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + PROXY_CUSTOM_URL + " = " + proxyCustomUrl);
 272
 273                     // Upgrade from schema version 9, Privacy Browser 3.3.
 274                     case 9:
 275                         // Previously this upgrade added `download_location` and `download_custom_location` to the Preferences table.  But they are now removed in schema version 13.
 276
 277                     // Upgrade from schema version 10, Privacy Browser 3.4.
 278                     case 10:
 279                         // Add the app theme column to the preferences table.
 280                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + APP_THEME + " TEXT");
 281
 282                         // Get a cursor for the dark theme preference.
 283                         Cursor darkThemePreferencesCursor = importDatabase.rawQuery("SELECT dark_theme FROM " + PREFERENCES_TABLE, null);
 284
 285                         // Move to the first preference.
 286                         darkThemePreferencesCursor.moveToFirst();
 287
 288                         // Get the old dark theme value, which is in column 0.
 289                         int darkTheme = darkThemePreferencesCursor.getInt(0);
 290
 291                         // Close the dark theme preference cursor.
 292                         darkThemePreferencesCursor.close();
 293
 294                         // Populate the app theme according to the old dark theme preference.
 295                         if (darkTheme == 0) {  // A light theme was selected.
 296                             // Set the app theme to be the system default.
 297                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + APP_THEME + " = 'System default'");
 298                         } else {  // A dark theme was selected.
 299                             // Set the app theme to be dark.
 300                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + APP_THEME + " = 'Dark'");
 301                         }
 302
 303                         // 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.
 304                         importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.WEBVIEW_THEME + " INTEGER");
 305
 306                         // Add the WebView theme to the preferences table.
 307                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + WEBVIEW_THEME + " TEXT");
 308
 309                         // Get the WebView theme default value string.
 310                         String webViewThemeDefaultValue = context.getString(R.string.webview_theme_default_value);
 311
 312                         // Set the WebView theme in the preferences table to be the default.
 313                         importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + WEBVIEW_THEME + " = " + "'" + webViewThemeDefaultValue + "'");
 314
 315                     // Upgrade from schema version 11, Privacy Browser 3.5.
 316                     case 11:
 317                         // Add the clear logcat column to the preferences table.
 318                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + CLEAR_LOGCAT + " BOOLEAN");
 319
 320                         // Get the current clear logcat value.
 321                         boolean clearLogcat = sharedPreferences.getBoolean(CLEAR_LOGCAT, true);
 322
 323                         // Populate the preferences table with the current clear logcat value.
 324                         if (clearLogcat) {
 325                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + CLEAR_LOGCAT + " = " + 1);
 326                         } else {
 327                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + CLEAR_LOGCAT + " = " + 0);
 328                         }
 329
 330                     // Upgrade from schema version 12, Privacy Browser 3.6.
 331                     case 12:
 332                         // Do nothing.  `download_location` and `download_custom_location` were removed from the preferences table.
 333
 334                     // Upgrade from schema version 13, Privacy Browser 3.7
 335                     case 13:
 336                         // `enabledthirdpartycookies` was removed from the domains table.  `do_not_track` and `third_party_cookies` were removed from the preferences table.
 337
 338                         // 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>
 339                         // <https://developer.android.com/reference/android/database/sqlite/package-summary>
 340                         // 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.
 341
 342                         // Create the new cookies columns.
 343                         importDatabase.execSQL("ALTER TABLE " + DomainsDatabaseHelper.DOMAINS_TABLE + " ADD COLUMN " + DomainsDatabaseHelper.COOKIES + " BOOLEAN");
 344                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + COOKIES + " BOOLEAN");
 345
 346                         // Copy the data from the old cookies columns to the new ones.
 347                         importDatabase.execSQL("UPDATE " + DomainsDatabaseHelper.DOMAINS_TABLE + " SET " + DomainsDatabaseHelper.COOKIES + " = enablefirstpartycookies");
 348                         importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + COOKIES + " = first_party_cookies");
 349
 350                         // Create the new columns.
 351                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + DOWNLOAD_WITH_EXTERNAL_APP + " BOOLEAN");
 352                         importDatabase.execSQL("ALTER TABLE " + PREFERENCES_TABLE + " ADD COLUMN " + BOTTOM_APP_BAR + " BOOLEAN");
 353
 354                         // Get the current values for the new columns.
 355                         boolean downloadWithExternalApp = sharedPreferences.getBoolean(DOWNLOAD_WITH_EXTERNAL_APP, false);
 356                         boolean bottomAppBar = sharedPreferences.getBoolean(BOTTOM_APP_BAR, false);
 357
 358                         // Populate the preferences table with the current download with external app value.
 359                         if (downloadWithExternalApp) {
 360                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + DOWNLOAD_WITH_EXTERNAL_APP + " = " + 1);
 361                         } else {
 362                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + DOWNLOAD_WITH_EXTERNAL_APP + " = " + 0);
 363                         }
 364
 365                         // Populate the preferences table with the current bottom app bar value.
 366                         if (bottomAppBar) {
 367                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + BOTTOM_APP_BAR + " = " + 1);
 368                         } else {
 369                             importDatabase.execSQL("UPDATE " + PREFERENCES_TABLE + " SET " + BOTTOM_APP_BAR + " = " + 0);
 370                         }
 371                 }
 372             }
 373
 374             // Get a cursor for the bookmarks table.
 375             Cursor importBookmarksCursor = importDatabase.rawQuery("SELECT * FROM " + BookmarksDatabaseHelper.BOOKMARKS_TABLE, null);
 376
 377             // Delete the current bookmarks database.
 378             context.deleteDatabase(BookmarksDatabaseHelper.BOOKMARKS_DATABASE);
 379
 380             // Create a new bookmarks database.  The `0` specifies the database version, but that is ignored and set instead using a constant in `BookmarksDatabaseHelper`.
 381             BookmarksDatabaseHelper bookmarksDatabaseHelper = new BookmarksDatabaseHelper(context, null, null, 0);
 382
 383             // Move to the first bookmark.
 384             importBookmarksCursor.moveToFirst();
 385
 386             // Copy the data from the import bookmarks cursor into the bookmarks database.
 387             for (int i = 0; i < importBookmarksCursor.getCount(); i++) {
 388                 // Extract the record from the cursor and store the data in a ContentValues.
 389                 ContentValues bookmarksContentValues = new ContentValues();
 390                 bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_NAME, importBookmarksCursor.getString(importBookmarksCursor.getColumnIndexOrThrow(BookmarksDatabaseHelper.BOOKMARK_NAME)));
 391                 bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_URL, importBookmarksCursor.getString(importBookmarksCursor.getColumnIndexOrThrow(BookmarksDatabaseHelper.BOOKMARK_URL)));
 392                 bookmarksContentValues.put(BookmarksDatabaseHelper.PARENT_FOLDER, importBookmarksCursor.getString(importBookmarksCursor.getColumnIndexOrThrow(BookmarksDatabaseHelper.PARENT_FOLDER)));
 393                 bookmarksContentValues.put(BookmarksDatabaseHelper.DISPLAY_ORDER, importBookmarksCursor.getInt(importBookmarksCursor.getColumnIndexOrThrow(BookmarksDatabaseHelper.DISPLAY_ORDER)));
 394                 bookmarksContentValues.put(BookmarksDatabaseHelper.IS_FOLDER, importBookmarksCursor.getInt(importBookmarksCursor.getColumnIndexOrThrow(BookmarksDatabaseHelper.IS_FOLDER)));
 395                 bookmarksContentValues.put(BookmarksDatabaseHelper.FAVORITE_ICON, importBookmarksCursor.getBlob(importBookmarksCursor.getColumnIndexOrThrow(BookmarksDatabaseHelper.FAVORITE_ICON)));
 396
 397                 // Insert the record into the export database.
 398                 bookmarksDatabaseHelper.createBookmark(bookmarksContentValues);
 399
 400                 // Advance to the next record.
 401                 importBookmarksCursor.moveToNext();
 402             }
 403
 404             // Close the bookmarks cursor.
 405             importBookmarksCursor.close();
 406
 407             // Close the bookmarks database.
 408             bookmarksDatabaseHelper.close();
 409
 410
 411             // Get a cursor for the domains table.
 412             Cursor importDomainsCursor = importDatabase.rawQuery("SELECT * FROM " + DomainsDatabaseHelper.DOMAINS_TABLE + " ORDER BY " + DomainsDatabaseHelper.DOMAIN_NAME + " ASC", null);
 413
 414             // Delete the current domains database.
 415             context.deleteDatabase(DomainsDatabaseHelper.DOMAINS_DATABASE);
 416
 417             // Create a new domains database.  The `0` specifies the database version, but that is ignored and set instead using a constant in `DomainsDatabaseHelper`.
 418             DomainsDatabaseHelper domainsDatabaseHelper = new DomainsDatabaseHelper(context, null, null, 0);
 419
 420             // Move to the first domain.
 421             importDomainsCursor.moveToFirst();
 422
 423             // Copy the data from the import domains cursor into the domains database.
 424             for (int i = 0; i < importDomainsCursor.getCount(); i++) {
 425                 // Extract the record from the cursor and store the data in a ContentValues.
 426                 ContentValues domainsContentValues = new ContentValues();
 427                 domainsContentValues.put(DomainsDatabaseHelper.DOMAIN_NAME, importDomainsCursor.getString(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.DOMAIN_NAME)));
 428                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_JAVASCRIPT, importDomainsCursor.getInt(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.ENABLE_JAVASCRIPT)));
 429                 domainsContentValues.put(DomainsDatabaseHelper.COOKIES, importDomainsCursor.getInt(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.COOKIES)));
 430                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_DOM_STORAGE, importDomainsCursor.getInt(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.ENABLE_DOM_STORAGE)));
 431                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FORM_DATA, importDomainsCursor.getInt(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.ENABLE_FORM_DATA)));
 432                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_EASYLIST, importDomainsCursor.getInt(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.ENABLE_EASYLIST)));
 433                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_EASYPRIVACY, importDomainsCursor.getInt(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.ENABLE_EASYPRIVACY)));
 434                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST,
 435                         importDomainsCursor.getInt(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST)));
 436                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST,
 437                         importDomainsCursor.getInt(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST)));
 438                 domainsContentValues.put(DomainsDatabaseHelper.ULTRALIST, importDomainsCursor.getInt(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.ULTRALIST)));
 439                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY, importDomainsCursor.getInt(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY)));
 440                 domainsContentValues.put(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS,
 441                         importDomainsCursor.getInt(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS)));
 442                 domainsContentValues.put(DomainsDatabaseHelper.USER_AGENT, importDomainsCursor.getString(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.USER_AGENT)));
 443                 domainsContentValues.put(DomainsDatabaseHelper.FONT_SIZE, importDomainsCursor.getInt(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.FONT_SIZE)));
 444                 domainsContentValues.put(DomainsDatabaseHelper.SWIPE_TO_REFRESH, importDomainsCursor.getInt(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.SWIPE_TO_REFRESH)));
 445                 domainsContentValues.put(DomainsDatabaseHelper.WEBVIEW_THEME, importDomainsCursor.getInt(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.WEBVIEW_THEME)));
 446                 domainsContentValues.put(DomainsDatabaseHelper.WIDE_VIEWPORT, importDomainsCursor.getInt(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.WIDE_VIEWPORT)));
 447                 domainsContentValues.put(DomainsDatabaseHelper.DISPLAY_IMAGES, importDomainsCursor.getInt(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.DISPLAY_IMAGES)));
 448                 domainsContentValues.put(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE, importDomainsCursor.getInt(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE)));
 449                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME,
 450                         importDomainsCursor.getString(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME)));
 451                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION,
 452                         importDomainsCursor.getString(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION)));
 453                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT,
 454                         importDomainsCursor.getString(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT)));
 455                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME,
 456                         importDomainsCursor.getString(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME)));
 457                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION,
 458                         importDomainsCursor.getString(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION)));
 459                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT,
 460                         importDomainsCursor.getString(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT)));
 461                 domainsContentValues.put(DomainsDatabaseHelper.SSL_START_DATE, importDomainsCursor.getLong(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.SSL_START_DATE)));
 462                 domainsContentValues.put(DomainsDatabaseHelper.SSL_END_DATE, importDomainsCursor.getLong(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.SSL_END_DATE)));
 463                 domainsContentValues.put(DomainsDatabaseHelper.PINNED_IP_ADDRESSES, importDomainsCursor.getInt(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.PINNED_IP_ADDRESSES)));
 464                 domainsContentValues.put(DomainsDatabaseHelper.IP_ADDRESSES, importDomainsCursor.getString(importDomainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.IP_ADDRESSES)));
 465
 466                 // Insert the record into the export database.
 467                 domainsDatabaseHelper.addDomain(domainsContentValues);
 468
 469                 // Advance to the next record.
 470                 importDomainsCursor.moveToNext();
 471             }
 472
 473             // Close the domains cursor.
 474             importDomainsCursor.close();
 475
 476             // Close the domains database.
 477             domainsDatabaseHelper.close();
 478
 479
 480             // Get a cursor for the preferences table.
 481             Cursor importPreferencesCursor = importDatabase.rawQuery("SELECT * FROM " + PREFERENCES_TABLE, null);
 482
 483             // Move to the first preference.
 484             importPreferencesCursor.moveToFirst();
 485
 486             // Import the preference data.
 487             sharedPreferences.edit()
 488                     .putBoolean(JAVASCRIPT, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(JAVASCRIPT)) == 1)
 489                     .putBoolean(COOKIES, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(COOKIES)) == 1)
 490                     .putBoolean(DOM_STORAGE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(DOM_STORAGE)) == 1)
 491                     // Save form data can be removed once the minimum API >= 26.
 492                     .putBoolean(SAVE_FORM_DATA, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(SAVE_FORM_DATA)) == 1)
 493                     .putString(USER_AGENT, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndexOrThrow(USER_AGENT)))
 494                     .putString(CUSTOM_USER_AGENT, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndexOrThrow(CUSTOM_USER_AGENT)))
 495                     .putBoolean(INCOGNITO_MODE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(INCOGNITO_MODE)) == 1)
 496                     .putBoolean(ALLOW_SCREENSHOTS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(ALLOW_SCREENSHOTS)) == 1)
 497                     .putBoolean(EASYLIST, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(EASYLIST)) == 1)
 498                     .putBoolean(EASYPRIVACY, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(EASYPRIVACY)) == 1)
 499                     .putBoolean(FANBOYS_ANNOYANCE_LIST, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(FANBOYS_ANNOYANCE_LIST)) == 1)
 500                     .putBoolean(FANBOYS_SOCIAL_BLOCKING_LIST, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(FANBOYS_SOCIAL_BLOCKING_LIST)) == 1)
 501                     .putBoolean(ULTRALIST, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(ULTRALIST)) == 1)
 502                     .putBoolean(ULTRAPRIVACY, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(ULTRAPRIVACY)) == 1)
 503                     .putBoolean(BLOCK_ALL_THIRD_PARTY_REQUESTS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(BLOCK_ALL_THIRD_PARTY_REQUESTS)) == 1)
 504                     .putBoolean(GOOGLE_ANALYTICS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(GOOGLE_ANALYTICS)) == 1)
 505                     .putBoolean(FACEBOOK_CLICK_IDS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(FACEBOOK_CLICK_IDS)) == 1)
 506                     .putBoolean(TWITTER_AMP_REDIRECTS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(TWITTER_AMP_REDIRECTS)) == 1)
 507                     .putString(SEARCH, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndexOrThrow(SEARCH)))
 508                     .putString(SEARCH_CUSTOM_URL, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndexOrThrow(SEARCH_CUSTOM_URL)))
 509                     .putString(PROXY, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndexOrThrow(PROXY)))
 510                     .putString(PROXY_CUSTOM_URL, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndexOrThrow(PROXY_CUSTOM_URL)))
 511                     .putBoolean(FULL_SCREEN_BROWSING_MODE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(FULL_SCREEN_BROWSING_MODE)) == 1)
 512                     .putBoolean(HIDE_APP_BAR, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(HIDE_APP_BAR)) == 1)
 513                     .putBoolean(CLEAR_EVERYTHING, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(CLEAR_EVERYTHING)) == 1)
 514                     .putBoolean(CLEAR_COOKIES, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(CLEAR_COOKIES)) == 1)
 515                     .putBoolean(CLEAR_DOM_STORAGE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(CLEAR_DOM_STORAGE)) == 1)
 516                     // Clear form data can be removed once the minimum API >= 26.
 517                     .putBoolean(CLEAR_FORM_DATA, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(CLEAR_FORM_DATA)) == 1)
 518                     .putBoolean(CLEAR_LOGCAT, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(CLEAR_LOGCAT)) == 1)
 519                     .putBoolean(CLEAR_CACHE, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(CLEAR_CACHE)) == 1)
 520                     .putString(HOMEPAGE, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndexOrThrow(HOMEPAGE)))
 521                     .putString(FONT_SIZE, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndexOrThrow(FONT_SIZE)))
 522                     .putBoolean(OPEN_INTENTS_IN_NEW_TAB, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(OPEN_INTENTS_IN_NEW_TAB)) == 1)
 523                     .putBoolean(SWIPE_TO_REFRESH, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(SWIPE_TO_REFRESH)) == 1)
 524                     .putBoolean(DOWNLOAD_WITH_EXTERNAL_APP, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(DOWNLOAD_WITH_EXTERNAL_APP)) == 1)
 525                     .putBoolean(SCROLL_APP_BAR, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(SCROLL_APP_BAR)) == 1)
 526                     .putBoolean(BOTTOM_APP_BAR, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(BOTTOM_APP_BAR)) == 1)
 527                     .putBoolean(DISPLAY_ADDITIONAL_APP_BAR_ICONS, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(DISPLAY_ADDITIONAL_APP_BAR_ICONS)) == 1)
 528                     .putString(APP_THEME, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndexOrThrow(APP_THEME)))
 529                     .putString(WEBVIEW_THEME, importPreferencesCursor.getString(importPreferencesCursor.getColumnIndexOrThrow(WEBVIEW_THEME)))
 530                     .putBoolean(WIDE_VIEWPORT, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(WIDE_VIEWPORT)) == 1)
 531                     .putBoolean(DISPLAY_WEBPAGE_IMAGES, importPreferencesCursor.getInt(importPreferencesCursor.getColumnIndexOrThrow(DISPLAY_WEBPAGE_IMAGES)) == 1)
 532                     .apply();
 533
 534             // Close the preferences cursor.
 535             importPreferencesCursor.close();
 536
 537             // Close the import database.
 538             importDatabase.close();
 539
 540             // Delete the temporary import file database, journal, and other related auxiliary files.
 541             SQLiteDatabase.deleteDatabase(temporaryImportFile);
 542
 543             // Import successful.
 544             return IMPORT_SUCCESSFUL;
 545         } catch (Exception exception) {
 546             // Return the import error.
 547             return exception.toString();
 548         }
 549     }
 550
 551     public String exportUnencrypted(OutputStream exportFileOutputStream, Context context) {
 552         try {
 553             // Create a temporary export file.
 554             File temporaryExportFile = File.createTempFile("temporary_export_file", null, context.getCacheDir());
 555
 556             // Create the temporary export database.
 557             SQLiteDatabase temporaryExportDatabase = SQLiteDatabase.openOrCreateDatabase(temporaryExportFile, null);
 558
 559             // Set the temporary export database version number.
 560             temporaryExportDatabase.setVersion(SCHEMA_VERSION);
 561
 562
 563             // Create the temporary export database bookmarks table.
 564             temporaryExportDatabase.execSQL(BookmarksDatabaseHelper.CREATE_BOOKMARKS_TABLE);
 565
 566             // Open the bookmarks database.  The `0` specifies the database version, but that is ignored and set instead using a constant in `BookmarksDatabaseHelper`.
 567             BookmarksDatabaseHelper bookmarksDatabaseHelper = new BookmarksDatabaseHelper(context, null, null, 0);
 568
 569             // Get a full bookmarks cursor.
 570             Cursor bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarks();
 571
 572             // Move to the first bookmark.
 573             bookmarksCursor.moveToFirst();
 574
 575             // Copy the data from the bookmarks cursor into the export database.
 576             for (int i = 0; i < bookmarksCursor.getCount(); i++) {
 577                 // Extract the record from the cursor and store the data in a ContentValues.
 578                 ContentValues bookmarksContentValues = new ContentValues();
 579                 bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_NAME, bookmarksCursor.getString(bookmarksCursor.getColumnIndexOrThrow(BookmarksDatabaseHelper.BOOKMARK_NAME)));
 580                 bookmarksContentValues.put(BookmarksDatabaseHelper.BOOKMARK_URL, bookmarksCursor.getString(bookmarksCursor.getColumnIndexOrThrow(BookmarksDatabaseHelper.BOOKMARK_URL)));
 581                 bookmarksContentValues.put(BookmarksDatabaseHelper.PARENT_FOLDER, bookmarksCursor.getString(bookmarksCursor.getColumnIndexOrThrow(BookmarksDatabaseHelper.PARENT_FOLDER)));
 582                 bookmarksContentValues.put(BookmarksDatabaseHelper.DISPLAY_ORDER, bookmarksCursor.getInt(bookmarksCursor.getColumnIndexOrThrow(BookmarksDatabaseHelper.DISPLAY_ORDER)));
 583                 bookmarksContentValues.put(BookmarksDatabaseHelper.IS_FOLDER, bookmarksCursor.getInt(bookmarksCursor.getColumnIndexOrThrow(BookmarksDatabaseHelper.IS_FOLDER)));
 584                 bookmarksContentValues.put(BookmarksDatabaseHelper.FAVORITE_ICON, bookmarksCursor.getBlob(bookmarksCursor.getColumnIndexOrThrow(BookmarksDatabaseHelper.FAVORITE_ICON)));
 585
 586                 // Insert the record into the temporary export database.
 587                 temporaryExportDatabase.insert(BookmarksDatabaseHelper.BOOKMARKS_TABLE, null, bookmarksContentValues);
 588
 589                 // Advance to the next record.
 590                 bookmarksCursor.moveToNext();
 591             }
 592
 593             // Close the bookmarks database.
 594             bookmarksCursor.close();
 595             bookmarksDatabaseHelper.close();
 596
 597
 598             // Create the temporary export database domains table.
 599             temporaryExportDatabase.execSQL(DomainsDatabaseHelper.CREATE_DOMAINS_TABLE);
 600
 601             // Open the domains database.  The `0` specifies the database version, but that is ignored and set instead using a constant in `DomainsDatabaseHelper`.
 602             DomainsDatabaseHelper domainsDatabaseHelper = new DomainsDatabaseHelper(context, null, null, 0);
 603
 604             // Get a full domains database cursor.
 605             Cursor domainsCursor = domainsDatabaseHelper.getCompleteCursorOrderedByDomain();
 606
 607             // Move to the first domain.
 608             domainsCursor.moveToFirst();
 609
 610             // Copy the data from the domains cursor into the export database.
 611             for (int i = 0; i < domainsCursor.getCount(); i++) {
 612                 // Extract the record from the cursor and store the data in a ContentValues.
 613                 ContentValues domainsContentValues = new ContentValues();
 614                 domainsContentValues.put(DomainsDatabaseHelper.DOMAIN_NAME, domainsCursor.getString(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.DOMAIN_NAME)));
 615                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_JAVASCRIPT, domainsCursor.getInt(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.ENABLE_JAVASCRIPT)));
 616                 domainsContentValues.put(DomainsDatabaseHelper.COOKIES, domainsCursor.getInt(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.COOKIES)));
 617                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_DOM_STORAGE, domainsCursor.getInt(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.ENABLE_DOM_STORAGE)));
 618                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FORM_DATA, domainsCursor.getInt(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.ENABLE_FORM_DATA)));
 619                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_EASYLIST, domainsCursor.getInt(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.ENABLE_EASYLIST)));
 620                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_EASYPRIVACY, domainsCursor.getInt(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.ENABLE_EASYPRIVACY)));
 621                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST, domainsCursor.getInt(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST)));
 622                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST,
 623                         domainsCursor.getInt(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST)));
 624                 domainsContentValues.put(DomainsDatabaseHelper.ULTRALIST, domainsCursor.getInt(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.ULTRALIST)));
 625                 domainsContentValues.put(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY, domainsCursor.getInt(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY)));
 626                 domainsContentValues.put(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS, domainsCursor.getInt(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS)));
 627                 domainsContentValues.put(DomainsDatabaseHelper.USER_AGENT, domainsCursor.getString(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.USER_AGENT)));
 628                 domainsContentValues.put(DomainsDatabaseHelper.FONT_SIZE, domainsCursor.getInt(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.FONT_SIZE)));
 629                 domainsContentValues.put(DomainsDatabaseHelper.SWIPE_TO_REFRESH, domainsCursor.getInt(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.SWIPE_TO_REFRESH)));
 630                 domainsContentValues.put(DomainsDatabaseHelper.WEBVIEW_THEME, domainsCursor.getInt(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.WEBVIEW_THEME)));
 631                 domainsContentValues.put(DomainsDatabaseHelper.WIDE_VIEWPORT, domainsCursor.getInt(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.WIDE_VIEWPORT)));
 632                 domainsContentValues.put(DomainsDatabaseHelper.DISPLAY_IMAGES, domainsCursor.getInt(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.DISPLAY_IMAGES)));
 633                 domainsContentValues.put(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE, domainsCursor.getInt(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE)));
 634                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME, domainsCursor.getString(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME)));
 635                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION, domainsCursor.getString(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION)));
 636                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT,
 637                         domainsCursor.getString(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT)));
 638                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME, domainsCursor.getString(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME)));
 639                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION, domainsCursor.getString(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION)));
 640                 domainsContentValues.put(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT,
 641                         domainsCursor.getString(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT)));
 642                 domainsContentValues.put(DomainsDatabaseHelper.SSL_START_DATE, domainsCursor.getLong(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.SSL_START_DATE)));
 643                 domainsContentValues.put(DomainsDatabaseHelper.SSL_END_DATE, domainsCursor.getLong(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.SSL_END_DATE)));
 644                 domainsContentValues.put(DomainsDatabaseHelper.PINNED_IP_ADDRESSES, domainsCursor.getInt(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.PINNED_IP_ADDRESSES)));
 645                 domainsContentValues.put(DomainsDatabaseHelper.IP_ADDRESSES, domainsCursor.getString(domainsCursor.getColumnIndexOrThrow(DomainsDatabaseHelper.IP_ADDRESSES)));
 646
 647                 // Insert the record into the temporary export database.
 648                 temporaryExportDatabase.insert(DomainsDatabaseHelper.DOMAINS_TABLE, null, domainsContentValues);
 649
 650                 // Advance to the next record.
 651                 domainsCursor.moveToNext();
 652             }
 653
 654             // Close the domains database.
 655             domainsCursor.close();
 656             domainsDatabaseHelper.close();
 657
 658
 659             // Prepare the preferences table SQL creation string.
 660             String CREATE_PREFERENCES_TABLE = "CREATE TABLE " + PREFERENCES_TABLE + " (" +
 661                     _ID + " INTEGER PRIMARY KEY, " +
 662                     JAVASCRIPT + " BOOLEAN, " +
 663                     COOKIES + " BOOLEAN, " +
 664                     DOM_STORAGE + " BOOLEAN, " +
 665                     SAVE_FORM_DATA + " BOOLEAN, " +
 666                     USER_AGENT + " TEXT, " +
 667                     CUSTOM_USER_AGENT + " TEXT, " +
 668                     INCOGNITO_MODE + " BOOLEAN, " +
 669                     ALLOW_SCREENSHOTS + " BOOLEAN, " +
 670                     EASYLIST + " BOOLEAN, " +
 671                     EASYPRIVACY + " BOOLEAN, " +
 672                     FANBOYS_ANNOYANCE_LIST + " BOOLEAN, " +
 673                     FANBOYS_SOCIAL_BLOCKING_LIST + " BOOLEAN, " +
 674                     ULTRALIST + " BOOLEAN, " +
 675                     ULTRAPRIVACY + " BOOLEAN, " +
 676                     BLOCK_ALL_THIRD_PARTY_REQUESTS + " BOOLEAN, " +
 677                     GOOGLE_ANALYTICS + " BOOLEAN, " +
 678                     FACEBOOK_CLICK_IDS + " BOOLEAN, " +
 679                     TWITTER_AMP_REDIRECTS + " BOOLEAN, " +
 680                     SEARCH + " TEXT, " +
 681                     SEARCH_CUSTOM_URL + " TEXT, " +
 682                     PROXY + " TEXT, " +
 683                     PROXY_CUSTOM_URL + " TEXT, " +
 684                     FULL_SCREEN_BROWSING_MODE + " BOOLEAN, " +
 685                     HIDE_APP_BAR + " BOOLEAN, " +
 686                     CLEAR_EVERYTHING + " BOOLEAN, " +
 687                     CLEAR_COOKIES + " BOOLEAN, " +
 688                     CLEAR_DOM_STORAGE + " BOOLEAN, " +
 689                     CLEAR_FORM_DATA + " BOOLEAN, " +
 690                     CLEAR_LOGCAT + " BOOLEAN, " +
 691                     CLEAR_CACHE + " BOOLEAN, " +
 692                     HOMEPAGE + " TEXT, " +
 693                     FONT_SIZE + " TEXT, " +
 694                     OPEN_INTENTS_IN_NEW_TAB + " BOOLEAN, " +
 695                     SWIPE_TO_REFRESH + " BOOLEAN, " +
 696                     DOWNLOAD_WITH_EXTERNAL_APP + " BOOLEAN, " +
 697                     SCROLL_APP_BAR + " BOOLEAN, " +
 698                     BOTTOM_APP_BAR + " BOOLEAN, " +
 699                     DISPLAY_ADDITIONAL_APP_BAR_ICONS + " BOOLEAN, " +
 700                     APP_THEME + " TEXT, " +
 701                     WEBVIEW_THEME + " TEXT, " +
 702                     WIDE_VIEWPORT + " BOOLEAN, " +
 703                     DISPLAY_WEBPAGE_IMAGES + " BOOLEAN)";
 704
 705             // Create the temporary export database preferences table.
 706             temporaryExportDatabase.execSQL(CREATE_PREFERENCES_TABLE);
 707
 708             // Get a handle for the shared preference.
 709             SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
 710
 711             // Create a ContentValues with the preferences information.
 712             ContentValues preferencesContentValues = new ContentValues();
 713             preferencesContentValues.put(JAVASCRIPT, sharedPreferences.getBoolean(JAVASCRIPT, false));
 714             preferencesContentValues.put(COOKIES, sharedPreferences.getBoolean(COOKIES, false));
 715             preferencesContentValues.put(DOM_STORAGE, sharedPreferences.getBoolean(DOM_STORAGE, false));
 716             preferencesContentValues.put(SAVE_FORM_DATA, sharedPreferences.getBoolean(SAVE_FORM_DATA, false));  // Save form data can be removed once the minimum API >= 26.
 717             preferencesContentValues.put(USER_AGENT, sharedPreferences.getString(USER_AGENT, context.getString(R.string.user_agent_default_value)));
 718             preferencesContentValues.put(CUSTOM_USER_AGENT, sharedPreferences.getString(CUSTOM_USER_AGENT, context.getString(R.string.custom_user_agent_default_value)));
 719             preferencesContentValues.put(INCOGNITO_MODE, sharedPreferences.getBoolean(INCOGNITO_MODE, false));
 720             preferencesContentValues.put(ALLOW_SCREENSHOTS, sharedPreferences.getBoolean(ALLOW_SCREENSHOTS, false));
 721             preferencesContentValues.put(EASYLIST, sharedPreferences.getBoolean(EASYLIST, true));
 722             preferencesContentValues.put(EASYPRIVACY, sharedPreferences.getBoolean(EASYPRIVACY, true));
 723             preferencesContentValues.put(FANBOYS_ANNOYANCE_LIST, sharedPreferences.getBoolean(FANBOYS_ANNOYANCE_LIST, true));
 724             preferencesContentValues.put(FANBOYS_SOCIAL_BLOCKING_LIST, sharedPreferences.getBoolean(FANBOYS_SOCIAL_BLOCKING_LIST, true));
 725             preferencesContentValues.put(ULTRALIST, sharedPreferences.getBoolean(ULTRALIST, true));
 726             preferencesContentValues.put(ULTRAPRIVACY, sharedPreferences.getBoolean(ULTRAPRIVACY, true));
 727             preferencesContentValues.put(BLOCK_ALL_THIRD_PARTY_REQUESTS, sharedPreferences.getBoolean(BLOCK_ALL_THIRD_PARTY_REQUESTS, false));
 728             preferencesContentValues.put(GOOGLE_ANALYTICS, sharedPreferences.getBoolean(GOOGLE_ANALYTICS, true));
 729             preferencesContentValues.put(FACEBOOK_CLICK_IDS, sharedPreferences.getBoolean(FACEBOOK_CLICK_IDS, true));
 730             preferencesContentValues.put(TWITTER_AMP_REDIRECTS, sharedPreferences.getBoolean(TWITTER_AMP_REDIRECTS, true));
 731             preferencesContentValues.put(SEARCH, sharedPreferences.getString(SEARCH, context.getString(R.string.search_default_value)));
 732             preferencesContentValues.put(SEARCH_CUSTOM_URL, sharedPreferences.getString(SEARCH_CUSTOM_URL, context.getString(R.string.search_custom_url_default_value)));
 733             preferencesContentValues.put(PROXY, sharedPreferences.getString(PROXY, context.getString(R.string.proxy_default_value)));
 734             preferencesContentValues.put(PROXY_CUSTOM_URL, sharedPreferences.getString(PROXY_CUSTOM_URL, context.getString(R.string.proxy_custom_url_default_value)));
 735             preferencesContentValues.put(FULL_SCREEN_BROWSING_MODE, sharedPreferences.getBoolean(FULL_SCREEN_BROWSING_MODE, false));
 736             preferencesContentValues.put(HIDE_APP_BAR, sharedPreferences.getBoolean(HIDE_APP_BAR, true));
 737             preferencesContentValues.put(CLEAR_EVERYTHING, sharedPreferences.getBoolean(CLEAR_EVERYTHING, true));
 738             preferencesContentValues.put(CLEAR_COOKIES, sharedPreferences.getBoolean(CLEAR_COOKIES, true));
 739             preferencesContentValues.put(CLEAR_DOM_STORAGE, sharedPreferences.getBoolean(CLEAR_DOM_STORAGE, true));
 740             preferencesContentValues.put(CLEAR_FORM_DATA, sharedPreferences.getBoolean(CLEAR_FORM_DATA, true));  // Clear form data can be removed once the minimum API >= 26.
 741             preferencesContentValues.put(CLEAR_LOGCAT, sharedPreferences.getBoolean(CLEAR_LOGCAT, true));
 742             preferencesContentValues.put(CLEAR_CACHE, sharedPreferences.getBoolean(CLEAR_CACHE, true));
 743             preferencesContentValues.put(HOMEPAGE, sharedPreferences.getString(HOMEPAGE, context.getString(R.string.homepage_default_value)));
 744             preferencesContentValues.put(FONT_SIZE, sharedPreferences.getString(FONT_SIZE, context.getString(R.string.font_size_default_value)));
 745             preferencesContentValues.put(OPEN_INTENTS_IN_NEW_TAB, sharedPreferences.getBoolean(OPEN_INTENTS_IN_NEW_TAB, true));
 746             preferencesContentValues.put(SWIPE_TO_REFRESH, sharedPreferences.getBoolean(SWIPE_TO_REFRESH, true));
 747             preferencesContentValues.put(DOWNLOAD_WITH_EXTERNAL_APP, sharedPreferences.getBoolean(DOWNLOAD_WITH_EXTERNAL_APP, false));
 748             preferencesContentValues.put(SCROLL_APP_BAR, sharedPreferences.getBoolean(SCROLL_APP_BAR, true));
 749             preferencesContentValues.put(BOTTOM_APP_BAR, sharedPreferences.getBoolean(BOTTOM_APP_BAR, false));
 750             preferencesContentValues.put(DISPLAY_ADDITIONAL_APP_BAR_ICONS, sharedPreferences.getBoolean(DISPLAY_ADDITIONAL_APP_BAR_ICONS, false));
 751             preferencesContentValues.put(APP_THEME, sharedPreferences.getString(APP_THEME, context.getString(R.string.app_theme_default_value)));
 752             preferencesContentValues.put(WEBVIEW_THEME, sharedPreferences.getString(WEBVIEW_THEME, context.getString(R.string.webview_theme_default_value)));
 753             preferencesContentValues.put(WIDE_VIEWPORT, sharedPreferences.getBoolean(WIDE_VIEWPORT, true));
 754             preferencesContentValues.put(DISPLAY_WEBPAGE_IMAGES, sharedPreferences.getBoolean(DISPLAY_WEBPAGE_IMAGES, true));
 755
 756             // Insert the preferences into the temporary export database.
 757             temporaryExportDatabase.insert(PREFERENCES_TABLE, null, preferencesContentValues);
 758
 759             // Close the temporary export database.
 760             temporaryExportDatabase.close();
 761
 762
 763             // Create the temporary export file input stream.
 764             FileInputStream temporaryExportFileInputStream = new FileInputStream(temporaryExportFile);
 765
 766             // Create a byte array.
 767             byte[] transferByteArray = new byte[1024];
 768
 769             // Create an integer to track the number of bytes read.
 770             int bytesRead;
 771
 772             // Copy the temporary export file to the export file output stream.
 773             while ((bytesRead = temporaryExportFileInputStream.read(transferByteArray)) > 0) {
 774                 exportFileOutputStream.write(transferByteArray, 0, bytesRead);
 775             }
 776
 777             // Flush the export file output stream.
 778             exportFileOutputStream.flush();
 779
 780             // Close the file streams.
 781             temporaryExportFileInputStream.close();
 782             exportFileOutputStream.close();
 783
 784             // Delete the temporary export file database, journal, and other related auxiliary files.
 785             SQLiteDatabase.deleteDatabase(temporaryExportFile);
 786
 787             // Export successful.
 788             return EXPORT_SUCCESSFUL;
 789         } catch (Exception exception) {
 790             // Return the export error.
 791             return exception.toString();
 792         }
 793     }
 794 }