The Tor Browser: toolkit/components/places/PlacesBackups.jsm@6474c204b198 (annotated)

toolkit/components/places/PlacesBackups.jsm@6474c204b198 (annotated)

toolkit/components/places/PlacesBackups.jsm

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
  * vim: sw=2 ts=2 sts=2 expandtab filetype=javascript
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 this.EXPORTED_SYMBOLS = ["PlacesBackups"];
 const Ci = Components.interfaces;
 const Cu = Components.utils;
 const Cc = Components.classes;
 Cu.import("resource://gre/modules/XPCOMUtils.jsm");
 Cu.import("resource://gre/modules/Services.jsm");
 Cu.import("resource://gre/modules/PlacesUtils.jsm");
 Cu.import("resource://gre/modules/Task.jsm");
 Cu.import("resource://gre/modules/osfile.jsm");
 Cu.import("resource://gre/modules/NetUtil.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "BookmarkJSONUtils",
   "resource://gre/modules/BookmarkJSONUtils.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "Deprecated",
   "resource://gre/modules/Deprecated.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "OS",
   "resource://gre/modules/osfile.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "Sqlite",
   "resource://gre/modules/Sqlite.jsm");
 XPCOMUtils.defineLazyGetter(this, "localFileCtor",
   () => Components.Constructor("@mozilla.org/file/local;1",
                                "nsILocalFile", "initWithPath"));
 XPCOMUtils.defineLazyGetter(this, "filenamesRegex",
   () => new RegExp("^bookmarks-([0-9\-]+)(?:_([0-9]+)){0,1}(?:_([a-z0-9=\+\-]{24})){0,1}\.(json|html)", "i")
 );
 /**
  * Appends meta-data information to a given filename.
  */
 function appendMetaDataToFilename(aFilename, aMetaData) {
   let matches = aFilename.match(filenamesRegex);
   return "bookmarks-" + matches[1] +
                   "_" + aMetaData.count +
                   "_" + aMetaData.hash +
                   "." + matches[4];
 }
 /**
  * Gets the hash from a backup filename.
  *
  * @return the extracted hash or null.
  */
 function getHashFromFilename(aFilename) {
   let matches = aFilename.match(filenamesRegex);
   if (matches && matches[3])
     return matches[3];
   return null;
 }
 /**
  * Given two filenames, checks if they contain the same date.
  */
 function isFilenameWithSameDate(aSourceName, aTargetName) {
   let sourceMatches = aSourceName.match(filenamesRegex);
   let targetMatches = aTargetName.match(filenamesRegex);
   return sourceMatches && targetMatches &&
          sourceMatches[1] == targetMatches[1] &&
          sourceMatches[4] == targetMatches[4];
 }
 /**
  * Given a filename, searches for another backup with the same date.
  *
  * @return OS.File path string or null.
  */
 function getBackupFileForSameDate(aFilename) {
   return Task.spawn(function* () {
     let backupFiles = yield PlacesBackups.getBackupFiles();
     for (let backupFile of backupFiles) {
       if (isFilenameWithSameDate(OS.Path.basename(backupFile), aFilename))
         return backupFile;
     }
     return null;
   });
 }
 this.PlacesBackups = {
   /**
    * Matches the backup filename:
    *  0: file name
    *  1: date in form Y-m-d
    *  2: bookmarks count
    *  3: contents hash
    *  4: file extension
    */
   get filenamesRegex() filenamesRegex,
   get folder() {
     Deprecated.warning(
       "PlacesBackups.folder is deprecated and will be removed in a future version",
       "https://bugzilla.mozilla.org/show_bug.cgi?id=859695");
     return this._folder;
   },
   /**
    * This exists just to avoid spamming deprecate warnings from internal calls
    * needed to support deprecated methods themselves.
    */
   get _folder() {
     let bookmarksBackupDir = Services.dirsvc.get("ProfD", Ci.nsILocalFile);
     bookmarksBackupDir.append(this.profileRelativeFolderPath);
     if (!bookmarksBackupDir.exists()) {
       bookmarksBackupDir.create(Ci.nsIFile.DIRECTORY_TYPE, parseInt("0700", 8));
       if (!bookmarksBackupDir.exists())
         throw("Unable to create bookmarks backup folder");
     }
     delete this._folder;
     return this._folder = bookmarksBackupDir;
   },
   /**
    * Gets backup folder asynchronously.
    * @return {Promise}
    * @resolve the folder (the folder string path).
    */
   getBackupFolder: function PB_getBackupFolder() {
     return Task.spawn(function* () {
       if (this._backupFolder) {
         return this._backupFolder;
       }
       let profileDir = OS.Constants.Path.profileDir;
       let backupsDirPath = OS.Path.join(profileDir, this.profileRelativeFolderPath);
       yield OS.File.makeDir(backupsDirPath, { ignoreExisting: true });
       return this._backupFolder = backupsDirPath;
     }.bind(this));
   },
   get profileRelativeFolderPath() "bookmarkbackups",
   /**
    * Cache current backups in a sorted (by date DESC) array.
    */
   get entries() {
     Deprecated.warning(
       "PlacesBackups.entries is deprecated and will be removed in a future version",
       "https://bugzilla.mozilla.org/show_bug.cgi?id=859695");
     return this._entries;
   },
   /**
    * This exists just to avoid spamming deprecate warnings from internal calls
    * needed to support deprecated methods themselves.
    */
   get _entries() {
     delete this._entries;
     this._entries = [];
     let files = this._folder.directoryEntries;
     while (files.hasMoreElements()) {
       let entry = files.getNext().QueryInterface(Ci.nsIFile);
       // A valid backup is any file that matches either the localized or
       // not-localized filename (bug 445704).
       if (!entry.isHidden() && filenamesRegex.test(entry.leafName)) {
         // Remove bogus backups in future dates.
         if (this.getDateForFile(entry) > new Date()) {
           entry.remove(false);
           continue;
         }
         this._entries.push(entry);
       }
     }
     this._entries.sort((a, b) => {
       let aDate = this.getDateForFile(a);
       let bDate = this.getDateForFile(b);
       return aDate < bDate ? 1 : aDate > bDate ? -1 : 0;
     });
     return this._entries;
   },
   /**
    * Cache current backups in a sorted (by date DESC) array.
    * @return {Promise}
    * @resolve a sorted array of string paths.
    */
   getBackupFiles: function PB_getBackupFiles() {
     return Task.spawn(function* () {
       if (this._backupFiles)
         return this._backupFiles;
       this._backupFiles = [];
       let backupFolderPath = yield this.getBackupFolder();
       let iterator = new OS.File.DirectoryIterator(backupFolderPath);
       yield iterator.forEach(function(aEntry) {
         // Since this is a lazy getter and OS.File I/O is serialized, we can
         // safely remove .tmp files without risking to remove ongoing backups.
         if (aEntry.name.endsWith(".tmp")) {
           OS.File.remove(aEntry.path);
           return;
         }
         if (filenamesRegex.test(aEntry.name)) {
           // Remove bogus backups in future dates.
           let filePath = aEntry.path;
           if (this.getDateForFile(filePath) > new Date()) {
             return OS.File.remove(filePath);
           } else {
             this._backupFiles.push(filePath);
           }
         }
       }.bind(this));
       iterator.close();
       this._backupFiles.sort((a, b) => {
         let aDate = this.getDateForFile(a);
         let bDate = this.getDateForFile(b);
         return aDate < bDate ? 1 : aDate > bDate ? -1 : 0;
       });
       return this._backupFiles;
     }.bind(this));
   },
   /**
    * Creates a filename for bookmarks backup files.
    *
    * @param [optional] aDateObj
    *                   Date object used to build the filename.
    *                   Will use current date if empty.
    * @return A bookmarks backup filename.
    */
   getFilenameForDate: function PB_getFilenameForDate(aDateObj) {
     let dateObj = aDateObj || new Date();
     // Use YYYY-MM-DD (ISO 8601) as it doesn't contain illegal characters
     // and makes the alphabetical order of multiple backup files more useful.
     return "bookmarks-" + dateObj.toLocaleFormat("%Y-%m-%d") + ".json";
   },
   /**
    * Creates a Date object from a backup file.  The date is the backup
    * creation date.
    *
    * @param aBackupFile
    *        nsIFile or string path of the backup.
    * @return A Date object for the backup's creation time.
    */
   getDateForFile: function PB_getDateForFile(aBackupFile) {
     let filename = (aBackupFile instanceof Ci.nsIFile) ? aBackupFile.leafName
                                                        : OS.Path.basename(aBackupFile);
     let matches = filename.match(filenamesRegex);
     if (!matches)
       throw("Invalid backup file name: " + filename);
     return new Date(matches[1].replace(/-/g, "/"));
   },
   /**
    * Get the most recent backup file.
    *
    * @param [optional] aFileExt
    *                   Force file extension.  Either "html" or "json".
    *                   Will check for both if not defined.
    * @returns nsIFile backup file
    */
   getMostRecent: function PB_getMostRecent(aFileExt) {
     Deprecated.warning(
       "PlacesBackups.getMostRecent is deprecated and will be removed in a future version",
       "https://bugzilla.mozilla.org/show_bug.cgi?id=859695");
     let fileExt = aFileExt || "(json|html)";
     for (let i = 0; i < this._entries.length; i++) {
       let rx = new RegExp("\." + fileExt + "$");
       if (this._entries[i].leafName.match(rx))
         return this._entries[i];
     }
     return null;
   },
    /**
     * Get the most recent backup file.
     *
     * @param [optional] aFileExt
     *                   Force file extension.  Either "html" or "json".
     *                   Will check for both if not defined.
     * @return {Promise}
     * @result the path to the file.
     */
    getMostRecentBackup: function PB_getMostRecentBackup(aFileExt) {
      return Task.spawn(function* () {
        let fileExt = aFileExt || "(json|html)";
        let entries = yield this.getBackupFiles();
        for (let entry of entries) {
          let rx = new RegExp("\." + fileExt + "$");
          if (OS.Path.basename(entry).match(rx)) {
            return entry;
          }
        }
        return null;
     }.bind(this));
   },
   /**
    * Serializes bookmarks using JSON, and writes to the supplied file.
    * Note: any item that should not be backed up must be annotated with
    *       "places/excludeFromBackup".
    *
    * @param aFilePath
    *        OS.File path for the "bookmarks.json" file to be created.
    * @return {Promise}
    * @resolves the number of serialized uri nodes.
    * @deprecated passing an nsIFile is deprecated
    */
   saveBookmarksToJSONFile: function PB_saveBookmarksToJSONFile(aFilePath) {
     if (aFilePath instanceof Ci.nsIFile) {
       Deprecated.warning("Passing an nsIFile to PlacesBackups.saveBookmarksToJSONFile " +
                          "is deprecated. Please use an OS.File path instead.",
                          "https://developer.mozilla.org/docs/JavaScript_OS.File");
       aFilePath = aFilePath.path;
     }
     return Task.spawn(function* () {
       let { count: nodeCount, hash: hash } =
         yield BookmarkJSONUtils.exportToFile(aFilePath);
       let backupFolderPath = yield this.getBackupFolder();
       if (OS.Path.dirname(aFilePath) == backupFolderPath) {
         // We are creating a backup in the default backups folder,
         // so just update the internal cache.
         this._entries.unshift(new localFileCtor(aFilePath));
         if (!this._backupFiles) {
           yield this.getBackupFiles();
         }
         this._backupFiles.unshift(aFilePath);
       } else {
         // If we are saving to a folder different than our backups folder, then
         // we also want to copy this new backup to it.
         // This way we ensure the latest valid backup is the same saved by the
         // user.  See bug 424389.
         let mostRecentBackupFile = yield this.getMostRecentBackup("json");
         if (!mostRecentBackupFile ||
             hash != getHashFromFilename(OS.Path.basename(mostRecentBackupFile))) {
           let name = this.getFilenameForDate();
           let newFilename = appendMetaDataToFilename(name,
                                                      { count: nodeCount,
                                                        hash: hash });
           let newFilePath = OS.Path.join(backupFolderPath, newFilename);
           let backupFile = yield getBackupFileForSameDate(name);
           if (backupFile) {
             // There is already a backup for today, replace it.
             yield OS.File.remove(backupFile, { ignoreAbsent: true });
             if (!this._backupFiles)
               yield this.getBackupFiles();
             else
               this._backupFiles.shift();
             this._backupFiles.unshift(newFilePath);
           } else {
             // There is no backup for today, add the new one.
             this._entries.unshift(new localFileCtor(newFilePath));
             if (!this._backupFiles)
               yield this.getBackupFiles();
             this._backupFiles.unshift(newFilePath);
           }
           yield OS.File.copy(aFilePath, newFilePath);
         }
       }
       return nodeCount;
     }.bind(this));
   },
   /**
    * Creates a dated backup in <profile>/bookmarkbackups.
    * Stores the bookmarks using JSON.
    * Note: any item that should not be backed up must be annotated with
    *       "places/excludeFromBackup".
    *
    * @param [optional] int aMaxBackups
    *                       The maximum number of backups to keep.  If set to 0
    *                       all existing backups are removed and aForceBackup is
    *                       ignored, so a new one won't be created.
    * @param [optional] bool aForceBackup
    *                        Forces creating a backup even if one was already
    *                        created that day (overwrites).
    * @return {Promise}
    */
   create: function PB_create(aMaxBackups, aForceBackup) {
     let limitBackups = function* () {
       let backupFiles = yield this.getBackupFiles();
       if (typeof aMaxBackups == "number" && aMaxBackups > -1 &&
           backupFiles.length >= aMaxBackups) {
         let numberOfBackupsToDelete = backupFiles.length - aMaxBackups;
         while (numberOfBackupsToDelete--) {
           this._entries.pop();
           let oldestBackup = this._backupFiles.pop();
           yield OS.File.remove(oldestBackup);
         }
       }
     }.bind(this);
     return Task.spawn(function* () {
       if (aMaxBackups === 0) {
         // Backups are disabled, delete any existing one and bail out.
         yield limitBackups(0);
         return;
       }
       // Ensure to initialize _backupFiles
       if (!this._backupFiles)
         yield this.getBackupFiles();
       let newBackupFilename = this.getFilenameForDate();
       // If we already have a backup for today we should do nothing, unless we
       // were required to enforce a new backup.
       let backupFile = yield getBackupFileForSameDate(newBackupFilename);
       if (backupFile && !aForceBackup)
         return;
       if (backupFile) {
         // In case there is a backup for today we should recreate it.
         this._backupFiles.shift();
         this._entries.shift();
         yield OS.File.remove(backupFile, { ignoreAbsent: true });
       }
       // Now check the hash of the most recent backup, and try to create a new
       // backup, if that fails due to hash conflict, just rename the old backup.
       let mostRecentBackupFile = yield this.getMostRecentBackup();
       let mostRecentHash = mostRecentBackupFile &&
                            getHashFromFilename(OS.Path.basename(mostRecentBackupFile));
       // Save bookmarks to a backup file.
       let backupFolder = yield this.getBackupFolder();
       let newBackupFile = OS.Path.join(backupFolder, newBackupFilename);
       let newFilenameWithMetaData;
       try {
         let { count: nodeCount, hash: hash } =
           yield BookmarkJSONUtils.exportToFile(newBackupFile,
                                                { failIfHashIs: mostRecentHash });
         newFilenameWithMetaData = appendMetaDataToFilename(newBackupFilename,
                                                            { count: nodeCount,
                                                              hash: hash });
       } catch (ex if ex.becauseSameHash) {
         // The last backup already contained up-to-date information, just
         // rename it as if it was today's backup.
         this._backupFiles.shift();
         this._entries.shift();
         newBackupFile = mostRecentBackupFile;
         newFilenameWithMetaData = appendMetaDataToFilename(
           newBackupFilename,
           { count: this.getBookmarkCountForFile(mostRecentBackupFile),
             hash: mostRecentHash });
       }
       // Append metadata to the backup filename.
       let newBackupFileWithMetadata = OS.Path.join(backupFolder, newFilenameWithMetaData);
       yield OS.File.move(newBackupFile, newBackupFileWithMetadata);
       this._entries.unshift(new localFileCtor(newBackupFileWithMetadata));
       this._backupFiles.unshift(newBackupFileWithMetadata);
       // Limit the number of backups.
       yield limitBackups(aMaxBackups);
     }.bind(this));
   },
   /**
    * Gets the bookmark count for backup file.
    *
    * @param aFilePath
    *        File path The backup file.
    *
    * @return the bookmark count or null.
    */
   getBookmarkCountForFile: function PB_getBookmarkCountForFile(aFilePath) {
     let count = null;
     let filename = OS.Path.basename(aFilePath);
     let matches = filename.match(filenamesRegex);
     if (matches && matches[2])
       count = matches[2];
     return count;
   },
   /**
    * Gets a bookmarks tree representation usable to create backups in different
    * file formats.  The root or the tree is PlacesUtils.placesRootId.
    * Items annotated with PlacesUtils.EXCLUDE_FROM_BACKUP_ANNO and all of their
    * descendants are excluded.
    *
    * @return an object representing a tree with the places root as its root.
    *         Each bookmark is represented by an object having these properties:
    *         * id: the item id (make this not enumerable after bug 824502)
    *         * title: the title
    *         * guid: unique id
    *         * parent: item id of the parent folder, not enumerable
    *         * index: the position in the parent
    *         * dateAdded: microseconds from the epoch
    *         * lastModified: microseconds from the epoch
    *         * type: type of the originating node as defined in PlacesUtils
    *         The following properties exist only for a subset of bookmarks:
    *         * annos: array of annotations
    *         * uri: url
    *         * iconuri: favicon's url
    *         * keyword: associated keyword
    *         * charset: last known charset
    *         * tags: csv string of tags
    *         * root: string describing whether this represents a root
    *         * children: array of child items in a folder
    */
   getBookmarksTree: function () {
     return Task.spawn(function* () {
       let dbFilePath = OS.Path.join(OS.Constants.Path.profileDir, "places.sqlite");
       let conn = yield Sqlite.openConnection({ path: dbFilePath,
                                                sharedMemoryCache: false });
       let rows = [];
       try {
         rows = yield conn.execute(
           "SELECT b.id, h.url, IFNULL(b.title, '') AS title, b.parent, " +
                  "b.position AS [index], b.type, b.dateAdded, b.lastModified, " +
                  "b.guid, f.url AS iconuri, " +
                  "( SELECT GROUP_CONCAT(t.title, ',') " +
                    "FROM moz_bookmarks b2 " +
                    "JOIN moz_bookmarks t ON t.id = +b2.parent AND t.parent = :tags_folder " +
                    "WHERE b2.fk = h.id " +
                  ") AS tags, " +
                  "EXISTS (SELECT 1 FROM moz_items_annos WHERE item_id = b.id LIMIT 1) AS has_annos, " +
                  "( SELECT a.content FROM moz_annos a " +
                    "JOIN moz_anno_attributes n ON a.anno_attribute_id = n.id " +
                    "WHERE place_id = h.id AND n.name = :charset_anno " +
                  ") AS charset " +
           "FROM moz_bookmarks b " +
           "LEFT JOIN moz_bookmarks p ON p.id = b.parent " +
           "LEFT JOIN moz_places h ON h.id = b.fk " +
           "LEFT JOIN moz_favicons f ON f.id = h.favicon_id " +
           "WHERE b.id <> :tags_folder AND b.parent <> :tags_folder AND p.parent <> :tags_folder " +
           "ORDER BY b.parent, b.position",
           { tags_folder: PlacesUtils.tagsFolderId,
             charset_anno: PlacesUtils.CHARSET_ANNO });
       } catch(e) {
         Cu.reportError("Unable to query the database " + e);
       } finally {
         yield conn.close();
       }
       let startTime = Date.now();
       // Create a Map for lookup and recursive building of the tree.
       let itemsMap = new Map();
       for (let row of rows) {
         let id = row.getResultByName("id");
         try {
           let bookmark = sqliteRowToBookmarkObject(row);
           if (itemsMap.has(id)) {
             // Since children may be added before parents, we should merge with
             // the existing object.
             let original = itemsMap.get(id);
             for (let prop of Object.getOwnPropertyNames(bookmark)) {
               original[prop] = bookmark[prop];
             }
             bookmark = original;
           }
           else {
             itemsMap.set(id, bookmark);
           }
           // Append bookmark to its parent.
           if (!itemsMap.has(bookmark.parent))
             itemsMap.set(bookmark.parent, {});
           let parent = itemsMap.get(bookmark.parent);
           if (!("children" in parent))
             parent.children = [];
           parent.children.push(bookmark);
         } catch (e) {
           Cu.reportError("Error while reading node " + id + " " + e);
         }
       }
       // Handle excluded items, by removing entire subtrees pointed by them.
       function removeFromMap(id) {
         // Could have been removed by a previous call, since we can't
         // predict order of items in EXCLUDE_FROM_BACKUP_ANNO.
         if (itemsMap.has(id)) {
           let excludedItem = itemsMap.get(id);
           if (excludedItem.children) {
             for (let child of excludedItem.children) {
               removeFromMap(child.id);
             }
           }
           // Remove the excluded item from its parent's children...
           let parentItem = itemsMap.get(excludedItem.parent);
           parentItem.children = parentItem.children.filter(aChild => aChild.id != id);
           // ...then remove it from the map.
           itemsMap.delete(id);
         }
       }
       for (let id of PlacesUtils.annotations.getItemsWithAnnotation(
                        PlacesUtils.EXCLUDE_FROM_BACKUP_ANNO)) {
         removeFromMap(id);
       }
       // Report the time taken to build the tree. This doesn't take into
       // account the time spent in the query since that's off the main-thread.
       try {
         Services.telemetry
                 .getHistogramById("PLACES_BACKUPS_BOOKMARKSTREE_MS")
                 .add(Date.now() - startTime);
       } catch (ex) {
         Components.utils.reportError("Unable to report telemetry.");
       }
       return [itemsMap.get(PlacesUtils.placesRootId), itemsMap.size];
     });
   }
 }
 /**
  * Helper function to convert a Sqlite.jsm row to a bookmark object
  * representation.
  *
  * @param aRow The Sqlite.jsm result row.
  */
 function sqliteRowToBookmarkObject(aRow) {
   let bookmark = {};
   for (let p of [ "id" ,"guid", "title", "index", "dateAdded", "lastModified" ]) {
     bookmark[p] = aRow.getResultByName(p);
   }
   Object.defineProperty(bookmark, "parent",
                         { value: aRow.getResultByName("parent") });
   let type = aRow.getResultByName("type");
   // Add annotations.
   if (aRow.getResultByName("has_annos")) {
     try {
       bookmark.annos = PlacesUtils.getAnnotationsForItem(bookmark.id);
     } catch (e) {
       Cu.reportError("Unexpected error while reading annotations " + e);
     }
   }
   switch (type) {
     case Ci.nsINavBookmarksService.TYPE_BOOKMARK:
       // TODO: What about shortcuts?
       bookmark.type = PlacesUtils.TYPE_X_MOZ_PLACE;
       // This will throw if we try to serialize an invalid url and the node will
       // just be skipped.
       bookmark.uri = NetUtil.newURI(aRow.getResultByName("url")).spec;
       // Keywords are cached, so this should be decently fast.
       let keyword = PlacesUtils.bookmarks.getKeywordForBookmark(bookmark.id);
       if (keyword)
         bookmark.keyword = keyword;
       let charset = aRow.getResultByName("charset");
       if (charset)
         bookmark.charset = charset;
       let tags = aRow.getResultByName("tags");
       if (tags)
         bookmark.tags = tags;
       let iconuri = aRow.getResultByName("iconuri");
       if (iconuri)
         bookmark.iconuri = iconuri;
       break;
     case Ci.nsINavBookmarksService.TYPE_FOLDER:
       bookmark.type = PlacesUtils.TYPE_X_MOZ_PLACE_CONTAINER;
       // Mark root folders.
       if (bookmark.id == PlacesUtils.placesRootId)
         bookmark.root = "placesRoot";
       else if (bookmark.id == PlacesUtils.bookmarksMenuFolderId)
         bookmark.root = "bookmarksMenuFolder";
       else if (bookmark.id == PlacesUtils.unfiledBookmarksFolderId)
         bookmark.root = "unfiledBookmarksFolder";
       else if (bookmark.id == PlacesUtils.toolbarFolderId)
         bookmark.root = "toolbarFolder";
       break;
     case Ci.nsINavBookmarksService.TYPE_SEPARATOR:
       bookmark.type = PlacesUtils.TYPE_X_MOZ_PLACE_SEPARATOR;
       break;
     default:
       Cu.reportError("Unexpected bookmark type");
       break;
   }
   return bookmark;
 }

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toolkit/components/places/PlacesBackups.jsm@6474c204b198 (annotated)

toolkit/components/places/PlacesBackups.jsm