diff options
Diffstat (limited to '')
| -rw-r--r-- | toolkit/components/places/BookmarkJSONUtils.sys.mjs | 567 |
1 files changed, 567 insertions, 0 deletions
diff --git a/toolkit/components/places/BookmarkJSONUtils.sys.mjs b/toolkit/components/places/BookmarkJSONUtils.sys.mjs new file mode 100644 index 0000000000..5f33240807 --- /dev/null +++ b/toolkit/components/places/BookmarkJSONUtils.sys.mjs @@ -0,0 +1,567 @@ +/* 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/. */ + +import { PlacesUtils } from "resource://gre/modules/PlacesUtils.sys.mjs"; + +const lazy = {}; + +ChromeUtils.defineESModuleGetters(lazy, { + PlacesBackups: "resource://gre/modules/PlacesBackups.sys.mjs", +}); + +// This is used to translate old folder pseudonyms in queries with their newer +// guids. +const OLD_BOOKMARK_QUERY_TRANSLATIONS = { + PLACES_ROOT: PlacesUtils.bookmarks.rootGuid, + BOOKMARKS_MENU: PlacesUtils.bookmarks.menuGuid, + TAGS: PlacesUtils.bookmarks.tagsGuid, + UNFILED_BOOKMARKS: PlacesUtils.bookmarks.unfiledGuid, + TOOLBAR: PlacesUtils.bookmarks.toolbarGuid, + MOBILE_BOOKMARKS: PlacesUtils.bookmarks.mobileGuid, +}; + +/** + * Generates an hash for the given string. + * + * @note The generated hash is returned in base64 form. Mind the fact base64 + * is case-sensitive if you are going to reuse this code. + */ +function generateHash(aString) { + let cryptoHash = Cc["@mozilla.org/security/hash;1"].createInstance( + Ci.nsICryptoHash + ); + cryptoHash.init(Ci.nsICryptoHash.MD5); + let stringStream = Cc["@mozilla.org/io/string-input-stream;1"].createInstance( + Ci.nsIStringInputStream + ); + stringStream.setUTF8Data(aString); + cryptoHash.updateFromStream(stringStream, -1); + // base64 allows the '/' char, but we can't use it for filenames. + return cryptoHash.finish(true).replace(/\//g, "-"); +} + +export var BookmarkJSONUtils = Object.freeze({ + /** + * Import bookmarks from a url. + * + * @param {string} aSpec + * url of the bookmark data. + * @param {boolean} [options.replace] + * Whether we should erase existing bookmarks before importing. + * @param {PlacesUtils.bookmarks.SOURCES} [options.source] + * The bookmark change source, used to determine the sync status for + * imported bookmarks. Defaults to `RESTORE` if `replace = true`, or + * `IMPORT` otherwise. + * + * @return {Promise} + * @resolves When the new bookmarks have been created. + * @rejects JavaScript exception. + */ + async importFromURL( + aSpec, + { + replace: aReplace = false, + source: aSource = aReplace + ? PlacesUtils.bookmarks.SOURCES.RESTORE + : PlacesUtils.bookmarks.SOURCES.IMPORT, + } = {} + ) { + notifyObservers(PlacesUtils.TOPIC_BOOKMARKS_RESTORE_BEGIN, aReplace); + try { + let importer = new BookmarkImporter(aReplace, aSource); + await importer.importFromURL(aSpec); + + notifyObservers(PlacesUtils.TOPIC_BOOKMARKS_RESTORE_SUCCESS, aReplace); + } catch (ex) { + console.error("Failed to restore bookmarks from " + aSpec + ": " + ex); + notifyObservers(PlacesUtils.TOPIC_BOOKMARKS_RESTORE_FAILED, aReplace); + throw ex; + } + }, + + /** + * Restores bookmarks and tags from a JSON file. + * + * @param aFilePath + * OS.File path string of bookmarks in JSON or JSONlz4 format to be restored. + * @param [options.replace] + * Whether we should erase existing bookmarks before importing. + * @param [options.source] + * The bookmark change source, used to determine the sync status for + * imported bookmarks. Defaults to `RESTORE` if `replace = true`, or + * `IMPORT` otherwise. + * + * @return {Promise} + * @resolves When the new bookmarks have been created. + * @rejects JavaScript exception. + */ + async importFromFile( + aFilePath, + { + replace: aReplace = false, + source: aSource = aReplace + ? PlacesUtils.bookmarks.SOURCES.RESTORE + : PlacesUtils.bookmarks.SOURCES.IMPORT, + } = {} + ) { + notifyObservers(PlacesUtils.TOPIC_BOOKMARKS_RESTORE_BEGIN, aReplace); + try { + if (!(await IOUtils.exists(aFilePath))) { + throw new Error("Cannot restore from nonexisting json file"); + } + + let importer = new BookmarkImporter(aReplace, aSource); + if (aFilePath.endsWith("jsonlz4")) { + await importer.importFromCompressedFile(aFilePath); + } else { + await importer.importFromURL(PathUtils.toFileURI(aFilePath)); + } + notifyObservers(PlacesUtils.TOPIC_BOOKMARKS_RESTORE_SUCCESS, aReplace); + } catch (ex) { + console.error( + "Failed to restore bookmarks from " + aFilePath + ": " + ex + ); + notifyObservers(PlacesUtils.TOPIC_BOOKMARKS_RESTORE_FAILED, aReplace); + throw ex; + } + }, + + /** + * Serializes bookmarks using JSON, and writes to the supplied file path. + * + * @param {path} aFilePath + * Path string for the bookmarks file to be created. + * @param {object} [aOptions] + * @param {string} [failIfHashIs] + * If the generated file would have the same hash defined here, will reject + * with ex.becauseSameHash + * @param {boolean} [compress] + * If true, writes file using lz4 compression + * @return {Promise} + * @resolves once the file has been created, to an object with the + * following properties: + * - count: number of exported bookmarks + * - hash: file hash for contents comparison + * @rejects JavaScript exception. + */ + async exportToFile(aFilePath, aOptions = {}) { + let [bookmarks, count] = await lazy.PlacesBackups.getBookmarksTree(); + let startTime = Date.now(); + let jsonString = JSON.stringify(bookmarks); + // Report the time taken to convert the tree to JSON. + try { + Services.telemetry + .getHistogramById("PLACES_BACKUPS_TOJSON_MS") + .add(Date.now() - startTime); + } catch (ex) { + console.error("Unable to report telemetry."); + } + + let hash = generateHash(jsonString); + + if (hash === aOptions.failIfHashIs) { + let e = new Error("Hash conflict"); + e.becauseSameHash = true; + throw e; + } + + // Do not write to the tmp folder, otherwise if it has a different + // filesystem writeAtomic will fail. Eventual dangling .tmp files should + // be cleaned up by the caller. + await IOUtils.writeUTF8(aFilePath, jsonString, { + compress: aOptions.compress, + tmpPath: PathUtils.join(aFilePath + ".tmp"), + }); + return { count, hash }; + }, +}); + +function BookmarkImporter(aReplace, aSource) { + this._replace = aReplace; + this._source = aSource; +} +BookmarkImporter.prototype = { + /** + * Import bookmarks from a url. + * + * @param {string} aSpec + * url of the bookmark data. + * + * @return {Promise} + * @resolves When the new bookmarks have been created. + * @rejects JavaScript exception. + */ + async importFromURL(spec) { + if (!spec.startsWith("chrome://") && !spec.startsWith("file://")) { + throw new Error( + "importFromURL can only be used with chrome:// and file:// URLs" + ); + } + let nodes = await (await fetch(spec)).json(); + + if (!nodes.children || !nodes.children.length) { + return; + } + + await this.import(nodes); + }, + + /** + * Import bookmarks from a compressed file. + * + * @param aFilePath + * OS.File path string of the bookmark data. + * + * @return {Promise} + * @resolves When the new bookmarks have been created. + * @rejects JavaScript exception. + */ + importFromCompressedFile: async function BI_importFromCompressedFile( + aFilePath + ) { + // We read as UTF8 rather than JSON, as PlacesUtils.unwrapNodes expects + // a JSON string. + let result = await IOUtils.readUTF8(aFilePath, { decompress: true }); + await this.importFromJSON(result); + }, + + /** + * Import bookmarks from a JSON string. + * + * @param {String} aString JSON string of serialized bookmark data. + * @return {Promise} + * @resolves When the new bookmarks have been created. + * @rejects JavaScript exception. + */ + async importFromJSON(aString) { + let nodes = PlacesUtils.unwrapNodes( + aString, + PlacesUtils.TYPE_X_MOZ_PLACE_CONTAINER + ); + + if (!nodes.length || !nodes[0].children || !nodes[0].children.length) { + return; + } + + await this.import(nodes[0]); + }, + + async import(rootNode) { + // Change to rootNode.children as we don't import the root, and also filter + // out any obsolete "tagsFolder" sections. + let nodes = rootNode.children.filter(node => node.root !== "tagsFolder"); + + // If we're replacing, then erase existing bookmarks first. + if (this._replace) { + await PlacesUtils.bookmarks.eraseEverything({ source: this._source }); + } + + let folderIdToGuidMap = {}; + + // Now do some cleanup on the imported nodes so that the various guids + // match what we need for insertTree, and we also have mappings of folders + // so we can repair any searches after inserting the bookmarks (see bug 824502). + for (let node of nodes) { + if (!node.children || !node.children.length) { + continue; + } // Nothing to restore for this root + + // Ensure we set the source correctly. + node.source = this._source; + + // Translate the node for insertTree. + let folders = translateTreeTypes(node); + + folderIdToGuidMap = Object.assign(folderIdToGuidMap, folders); + } + + // Now we can add the actual nodes to the database. + for (let node of nodes) { + // Drop any nodes without children, we can't insert them. + if (!node.children || !node.children.length) { + continue; + } + + // Drop any roots whose guid we don't recognise - we don't support anything + // apart from the built-in roots. + if (!PlacesUtils.bookmarks.userContentRoots.includes(node.guid)) { + continue; + } + + fixupSearchQueries(node, folderIdToGuidMap); + + await PlacesUtils.bookmarks.insertTree(node, { + fixupOrSkipInvalidEntries: true, + }); + + // Now add any favicons. + try { + insertFaviconsForTree(node); + } catch (ex) { + console.error(`Failed to insert favicons: ${ex}`); + } + } + }, +}; + +function notifyObservers(topic, replace) { + Services.obs.notifyObservers(null, topic, replace ? "json" : "json-append"); +} + +/** + * Iterates through a node, fixing up any place: URL queries that are found. This + * replaces any old (pre Firefox 62) queries that contain "folder=<id>" parts with + * "parent=<guid>". + * + * @param {Object} aNode The node to search. + * @param {Array} aFolderIdMap An array mapping of old folder IDs to new folder GUIDs. + */ +function fixupSearchQueries(aNode, aFolderIdMap) { + if (aNode.url && aNode.url.startsWith("place:")) { + aNode.url = fixupQuery(aNode.url, aFolderIdMap); + } + if (aNode.children) { + for (let child of aNode.children) { + fixupSearchQueries(child, aFolderIdMap); + } + } +} + +/** + * Replaces imported folder ids with their local counterparts in a place: URI. + * + * @param {String} aQueryURL + * A place: URI with folder ids. + * @param {Object} aFolderIdMap + * An array mapping of old folder IDs to new folder GUIDs. + * @return {String} the fixed up URI if all matched. If some matched, it returns + * the URI with only the matching folders included. If none matched + * it returns the input URI unchanged. + */ +function fixupQuery(aQueryURL, aFolderIdMap) { + let invalid = false; + let convert = function(str, existingFolderId) { + let guid; + if ( + Object.keys(OLD_BOOKMARK_QUERY_TRANSLATIONS).includes(existingFolderId) + ) { + guid = OLD_BOOKMARK_QUERY_TRANSLATIONS[existingFolderId]; + } else { + guid = aFolderIdMap[existingFolderId]; + if (!guid) { + invalid = true; + return `invalidOldParentId=${existingFolderId}`; + } + } + return `parent=${guid}`; + }; + + let url = aQueryURL.replace(/folder=([A-Za-z0-9_]+)/g, convert); + if (invalid) { + // One or more of the folders don't exist, cause an empty query so that + // we don't try to display the whole database. + url += "&excludeItems=1"; + } + return url; +} + +/** + * A mapping of root folder names to Guids. To help fixupRootFolderGuid. + */ +const rootToFolderGuidMap = { + placesRoot: PlacesUtils.bookmarks.rootGuid, + bookmarksMenuFolder: PlacesUtils.bookmarks.menuGuid, + unfiledBookmarksFolder: PlacesUtils.bookmarks.unfiledGuid, + toolbarFolder: PlacesUtils.bookmarks.toolbarGuid, + mobileFolder: PlacesUtils.bookmarks.mobileGuid, +}; + +/** + * Updates a bookmark node from the json version to the places GUID. This + * will only change GUIDs for the built-in folders. Other folders will remain + * unchanged. + * + * @param {Object} A bookmark node that is updated with the new GUID if necessary. + */ +function fixupRootFolderGuid(node) { + if (!node.guid && node.root && node.root in rootToFolderGuidMap) { + node.guid = rootToFolderGuidMap[node.root]; + } +} + +/** + * Translates the JSON types for a node and its children into Places compatible + * types. Also handles updating of other parameters e.g. dateAdded and lastModified. + * + * @param {Object} node A node to be updated. If it contains children, they will + * be updated as well. + * @return {Array} An array containing two items: + * - {Object} A map of current folder ids to GUIDS + * - {Array} An array of GUIDs for nodes that contain query URIs + */ +function translateTreeTypes(node) { + let folderIdToGuidMap = {}; + + // Do the uri fixup first, so we can be consistent in this function. + if (node.uri) { + node.url = node.uri; + delete node.uri; + } + + switch (node.type) { + case PlacesUtils.TYPE_X_MOZ_PLACE_CONTAINER: + node.type = PlacesUtils.bookmarks.TYPE_FOLDER; + + // Older type mobile folders have a random guid with an annotation. We need + // to make sure those go into the proper mobile folder. + let isMobileFolder = + node.annos && + node.annos.some(anno => anno.name == PlacesUtils.MOBILE_ROOT_ANNO); + if (isMobileFolder) { + node.guid = PlacesUtils.bookmarks.mobileGuid; + } else { + // In case the Guid is broken, we need to fix it up. + fixupRootFolderGuid(node); + } + + // Record the current id and the guid so that we can update any search + // queries later. + folderIdToGuidMap[node.id] = node.guid; + break; + case PlacesUtils.TYPE_X_MOZ_PLACE: + node.type = PlacesUtils.bookmarks.TYPE_BOOKMARK; + break; + case PlacesUtils.TYPE_X_MOZ_PLACE_SEPARATOR: + node.type = PlacesUtils.bookmarks.TYPE_SEPARATOR; + if ("title" in node) { + delete node.title; + } + break; + default: + // No need to throw/reject here, insertTree will remove this node automatically. + console.error(`Unexpected bookmark type ${node.type}`); + break; + } + + if (node.dateAdded) { + node.dateAdded = PlacesUtils.toDate(node.dateAdded); + } + + if (node.lastModified) { + let lastModified = PlacesUtils.toDate(node.lastModified); + // Ensure we get a last modified date that's later or equal to the dateAdded + // so that we don't upset the Bookmarks API. + if (lastModified >= node.dateAdded) { + node.lastModified = lastModified; + } else { + delete node.lastModified; + } + } + + if (node.tags) { + // Separate any tags into an array, and ignore any that are too long. + node.tags = node.tags + .split(",") + .filter( + aTag => + !!aTag.length && aTag.length <= PlacesUtils.bookmarks.MAX_TAG_LENGTH + ); + + // If we end up with none, then delete the property completely. + if (!node.tags.length) { + delete node.tags; + } + } + + // Sometimes postData can be null, so delete it to make the validators happy. + if (node.postData == null) { + delete node.postData; + } + + // Now handle any children. + if (!node.children) { + return folderIdToGuidMap; + } + + // First sort the children by index. + node.children = node.children.sort((a, b) => { + return a.index - b.index; + }); + + // Now do any adjustments required for the children. + for (let child of node.children) { + let folders = translateTreeTypes(child); + folderIdToGuidMap = Object.assign(folderIdToGuidMap, folders); + } + + return folderIdToGuidMap; +} + +/** + * Handles inserting favicons into the database for a bookmark node. + * It is assumed the node has already been inserted into the bookmarks + * database. + * + * @param {Object} node The bookmark node for icons to be inserted. + */ +function insertFaviconForNode(node) { + if (node.icon) { + try { + // Create a fake faviconURI to use (FIXME: bug 523932) + let faviconURI = Services.io.newURI("fake-favicon-uri:" + node.url); + PlacesUtils.favicons.replaceFaviconDataFromDataURL( + faviconURI, + node.icon, + 0, + Services.scriptSecurityManager.getSystemPrincipal() + ); + PlacesUtils.favicons.setAndFetchFaviconForPage( + Services.io.newURI(node.url), + faviconURI, + false, + PlacesUtils.favicons.FAVICON_LOAD_NON_PRIVATE, + null, + Services.scriptSecurityManager.getSystemPrincipal() + ); + } catch (ex) { + console.error("Failed to import favicon data:" + ex); + } + } + + if (!node.iconUri) { + return; + } + + try { + PlacesUtils.favicons.setAndFetchFaviconForPage( + Services.io.newURI(node.url), + Services.io.newURI(node.iconUri), + false, + PlacesUtils.favicons.FAVICON_LOAD_NON_PRIVATE, + null, + Services.scriptSecurityManager.getSystemPrincipal() + ); + } catch (ex) { + console.error("Failed to import favicon URI:" + ex); + } +} + +/** + * Handles inserting favicons into the database for a bookmark tree - a node + * and its children. + * + * It is assumed the nodes have already been inserted into the bookmarks + * database. + * + * @param {Object} nodeTree The bookmark node tree for icons to be inserted. + */ +function insertFaviconsForTree(nodeTree) { + insertFaviconForNode(nodeTree); + + if (nodeTree.children) { + for (let child of nodeTree.children) { + insertFaviconsForTree(child); + } + } +} |