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gecko-dev/toolkit/components/places/BookmarkHTMLUtils.jsm

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JavaScript
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/* 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 file works on the old-style "bookmarks.html" file. It includes
* functions to import and export existing bookmarks to this file format.
*
* Format
* ------
*
* Primary heading := h1
* Old version used this to set attributes on the bookmarks RDF root, such
* as the last modified date. We only use H1 to check for the attribute
* PLACES_ROOT, which tells us that this hierarchy root is the places root.
* For backwards compatibility, if we don't find this, we assume that the
* hierarchy is rooted at the bookmarks menu.
* Heading := any heading other than h1
* Old version used this to set attributes on the current container. We only
* care about the content of the heading container, which contains the title
* of the bookmark container.
* Bookmark := a
* HREF is the destination of the bookmark
* FEEDURL is the URI of the RSS feed. This is deprecated and no more
* supported, but some old files may still contain it.
* LAST_CHARSET is stored as an annotation so that the next time we go to
* that page we remember the user's preference.
* ICON will be stored in the favicon service
* ICON_URI is new for places bookmarks.html, it refers to the original
* URI of the favicon so we don't have to make up favicon URLs.
* Text of the <a> container is the name of the bookmark
* Ignored: LAST_VISIT, ID (writing out non-RDF IDs can confuse Firefox 2)
* Bookmark comment := dd
* This affects the previosly added bookmark
* Separator := hr
* Insert a separator into the current container
* The folder hierarchy is defined by <dl>/<ul>/<menu> (the old importing code
* handles all these cases, when we write, use <dl>).
*
* Overall design
* --------------
*
* We need to emulate a recursive parser. A "Bookmark import frame" is created
* corresponding to each folder we encounter. These are arranged in a stack,
* and contain all the state we need to keep track of.
*
* A frame is created when we find a heading, which defines a new container.
* The frame also keeps track of the nesting of <DL>s, (in well-formed
* bookmarks files, these will have a 1-1 correspondence with frames, but we
* try to be a little more flexible here). When the nesting count decreases
* to 0, then we know a frame is complete and to pop back to the previous
* frame.
*
* Note that a lot of things happen when tags are CLOSED because we need to
* get the text from the content of the tag. For example, link and heading tags
* both require the content (= title) before actually creating it.
*/
var EXPORTED_SYMBOLS = ["BookmarkHTMLUtils"];
const { XPCOMUtils } = ChromeUtils.import(
"resource://gre/modules/XPCOMUtils.jsm"
);
const { Services } = ChromeUtils.import("resource://gre/modules/Services.jsm");
const { NetUtil } = ChromeUtils.import("resource://gre/modules/NetUtil.jsm");
const { OS } = ChromeUtils.import("resource://gre/modules/osfile.jsm");
const { FileUtils } = ChromeUtils.import(
"resource://gre/modules/FileUtils.jsm"
);
const { PlacesUtils } = ChromeUtils.import(
"resource://gre/modules/PlacesUtils.jsm"
);
XPCOMUtils.defineLazyGlobalGetters(this, ["XMLHttpRequest"]);
ChromeUtils.defineModuleGetter(
this,
"PlacesBackups",
"resource://gre/modules/PlacesBackups.jsm"
);
const Container_Normal = 0;
const Container_Toolbar = 1;
const Container_Menu = 2;
const Container_Unfiled = 3;
const Container_Places = 4;
const MICROSEC_PER_SEC = 1000000;
const EXPORT_INDENT = " "; // four spaces
function base64EncodeString(aString) {
let stream = Cc["@mozilla.org/io/string-input-stream;1"].createInstance(
Ci.nsIStringInputStream
);
stream.setData(aString, aString.length);
let encoder = Cc["@mozilla.org/scriptablebase64encoder;1"].createInstance(
Ci.nsIScriptableBase64Encoder
);
return encoder.encodeToString(stream, aString.length);
}
/**
* Provides HTML escaping for use in HTML attributes and body of the bookmarks
* file, compatible with the old bookmarks system.
*/
function escapeHtmlEntities(aText) {
return (aText || "")
.replace(/&/g, "&amp;")
.replace(/</g, "&lt;")
.replace(/>/g, "&gt;")
.replace(/"/g, "&quot;")
.replace(/'/g, "&#39;");
}
/**
* Provides URL escaping for use in HTML attributes of the bookmarks file,
* compatible with the old bookmarks system.
*/
function escapeUrl(aText) {
return (aText || "").replace(/"/g, "%22");
}
function notifyObservers(aTopic, aInitialImport) {
Services.obs.notifyObservers(
null,
aTopic,
aInitialImport ? "html-initial" : "html"
);
}
var BookmarkHTMLUtils = Object.freeze({
/**
* Loads the current bookmarks hierarchy from a "bookmarks.html" file.
*
* @param aSpec
* String containing the "file:" URI for the existing "bookmarks.html"
* file to be loaded.
* @param [options.replace]
* Whether we should erase existing bookmarks before loading.
* Defaults to `false`.
* @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 importFromURL(
aSpec,
{
replace: aInitialImport = false,
source: aSource = aInitialImport
? PlacesUtils.bookmarks.SOURCES.RESTORE
: PlacesUtils.bookmarks.SOURCES.IMPORT,
} = {}
) {
notifyObservers(PlacesUtils.TOPIC_BOOKMARKS_RESTORE_BEGIN, aInitialImport);
try {
let importer = new BookmarkImporter(aInitialImport, aSource);
await importer.importFromURL(aSpec);
notifyObservers(
PlacesUtils.TOPIC_BOOKMARKS_RESTORE_SUCCESS,
aInitialImport
);
} catch (ex) {
Cu.reportError("Failed to import bookmarks from " + aSpec + ": " + ex);
notifyObservers(
PlacesUtils.TOPIC_BOOKMARKS_RESTORE_FAILED,
aInitialImport
);
throw ex;
}
},
/**
* Loads the current bookmarks hierarchy from a "bookmarks.html" file.
*
* @param aFilePath
* OS.File path string of the "bookmarks.html" file to be loaded.
* @param [options.replace]
* Whether we should erase existing bookmarks before loading.
* Defaults to `false`.
* @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: aInitialImport = false,
source: aSource = aInitialImport
? PlacesUtils.bookmarks.SOURCES.RESTORE
: PlacesUtils.bookmarks.SOURCES.IMPORT,
} = {}
) {
notifyObservers(PlacesUtils.TOPIC_BOOKMARKS_RESTORE_BEGIN, aInitialImport);
try {
if (!(await OS.File.exists(aFilePath))) {
throw new Error(
"Cannot import from nonexisting html file: " + aFilePath
);
}
let importer = new BookmarkImporter(aInitialImport, aSource);
await importer.importFromURL(OS.Path.toFileURI(aFilePath));
notifyObservers(
PlacesUtils.TOPIC_BOOKMARKS_RESTORE_SUCCESS,
aInitialImport
);
} catch (ex) {
Cu.reportError(
"Failed to import bookmarks from " + aFilePath + ": " + ex
);
notifyObservers(
PlacesUtils.TOPIC_BOOKMARKS_RESTORE_FAILED,
aInitialImport
);
throw ex;
}
},
/**
* Saves the current bookmarks hierarchy to a "bookmarks.html" file.
*
* @param aFilePath
* OS.File path string for the "bookmarks.html" file to be created.
*
* @return {Promise}
* @resolves To the exported bookmarks count when the file has been created.
* @rejects JavaScript exception.
*/
async exportToFile(aFilePath) {
let [bookmarks, count] = await PlacesBackups.getBookmarksTree();
let startTime = Date.now();
// Report the time taken to convert the tree to HTML.
let exporter = new BookmarkExporter(bookmarks);
await exporter.exportToFile(aFilePath);
try {
Services.telemetry
.getHistogramById("PLACES_EXPORT_TOHTML_MS")
.add(Date.now() - startTime);
} catch (ex) {
Cu.reportError("Unable to report telemetry.");
}
return count;
},
get defaultPath() {
try {
return Services.prefs.getCharPref("browser.bookmarks.file");
} catch (ex) {}
return OS.Path.join(OS.Constants.Path.profileDir, "bookmarks.html");
},
});
function Frame(aFolder) {
this.folder = aFolder;
/**
* How many <dl>s have been nested. Each frame/container should start
* with a heading, and is then followed by a <dl>, <ul>, or <menu>. When
* that list is complete, then it is the end of this container and we need
* to pop back up one level for new items. If we never get an open tag for
* one of these things, we should assume that the container is empty and
* that things we find should be siblings of it. Normally, these <dl>s won't
* be nested so this will be 0 or 1.
*/
this.containerNesting = 0;
/**
* when we find a heading tag, it actually affects the title of the NEXT
* container in the list. This stores that heading tag and whether it was
* special. 'consumeHeading' resets this._
*/
this.lastContainerType = Container_Normal;
/**
* this contains the text from the last begin tag until now. It is reset
* at every begin tag. We can check it when we see a </a>, or </h3>
* to see what the text content of that node should be.
*/
this.previousText = "";
/**
* true when we hit a <dd>, which contains the description for the preceding
* <a> tag. We can't just check for </dd> like we can for </a> or </h3>
* because if there is a sub-folder, it is actually a child of the <dd>
* because the tag is never explicitly closed. If this is true and we see a
* new open tag, that means to commit the description to the previous
* bookmark.
*
* Additional weirdness happens when the previous <dt> tag contains a <h3>:
* this means there is a new folder with the given description, and whose
* children are contained in the following <dl> list.
*
* This is handled in openContainer(), which commits previous text if
* necessary.
*/
this.inDescription = false;
/**
* contains the URL of the previous bookmark created. This is used so that
* when we encounter a <dd>, we know what bookmark to associate the text with.
* This is cleared whenever we hit a <h3>, so that we know NOT to save this
* with a bookmark, but to keep it until
*/
this.previousLink = null;
/**
* Contains a reference to the last created bookmark or folder object.
*/
this.previousItem = null;
/**
* Contains the date-added and last-modified-date of an imported item.
* Used to override the values set by insertBookmark, createFolder, etc.
*/
this.previousDateAdded = null;
this.previousLastModifiedDate = null;
}
function BookmarkImporter(aInitialImport, aSource) {
this._isImportDefaults = aInitialImport;
this._source = aSource;
// This root is where we construct the bookmarks tree into, following the format
// of the imported file.
// If we're doing an initial import, the non-menu roots will be created as
// children of this root, so in _getBookmarkTrees we'll split them out.
// If we're not doing an initial import, everything gets imported under the
// bookmark menu folder, so there won't be any need for _getBookmarkTrees to
// do separation.
this._bookmarkTree = {
type: PlacesUtils.bookmarks.TYPE_FOLDER,
guid: PlacesUtils.bookmarks.menuGuid,
children: [],
};
this._frames = [];
this._frames.push(new Frame(this._bookmarkTree));
}
BookmarkImporter.prototype = {
_safeTrim: function safeTrim(aStr) {
return aStr ? aStr.trim() : aStr;
},
get _curFrame() {
return this._frames[this._frames.length - 1];
},
get _previousFrame() {
return this._frames[this._frames.length - 2];
},
/**
* This is called when there is a new folder found. The folder takes the
* name from the previous frame's heading.
*/
_newFrame: function newFrame() {
let frame = this._curFrame;
let containerTitle = frame.previousText;
frame.previousText = "";
let containerType = frame.lastContainerType;
let folder = {
children: [],
type: PlacesUtils.bookmarks.TYPE_FOLDER,
};
switch (containerType) {
case Container_Normal:
// This can only be a sub-folder so no need to set a guid here.
folder.title = containerTitle;
break;
case Container_Places:
folder.guid = PlacesUtils.bookmarks.rootGuid;
break;
case Container_Menu:
folder.guid = PlacesUtils.bookmarks.menuGuid;
break;
case Container_Unfiled:
folder.guid = PlacesUtils.bookmarks.unfiledGuid;
break;
case Container_Toolbar:
folder.guid = PlacesUtils.bookmarks.toolbarGuid;
break;
default:
// NOT REACHED
throw new Error("Unknown bookmark container type!");
}
frame.folder.children.push(folder);
if (frame.previousDateAdded != null) {
folder.dateAdded = frame.previousDateAdded;
frame.previousDateAdded = null;
}
if (frame.previousLastModifiedDate != null) {
folder.lastModified = frame.previousLastModifiedDate;
frame.previousLastModifiedDate = null;
}
if (
!folder.hasOwnProperty("dateAdded") &&
folder.hasOwnProperty("lastModified")
) {
folder.dateAdded = folder.lastModified;
}
frame.previousItem = folder;
this._frames.push(new Frame(folder));
},
/**
* Handles <hr> as a separator.
*
* @note Separators may have a title in old html files, though Places dropped
* support for them.
* We also don't import ADD_DATE or LAST_MODIFIED for separators because
* pre-Places bookmarks did not support them.
*/
_handleSeparator: function handleSeparator(aElt) {
let frame = this._curFrame;
let separator = {
type: PlacesUtils.bookmarks.TYPE_SEPARATOR,
};
frame.folder.children.push(separator);
frame.previousItem = separator;
},
/**
* Called for h2,h3,h4,h5,h6. This just stores the correct information in
* the current frame; the actual new frame corresponding to the container
* associated with the heading will be created when the tag has been closed
* and we know the title (we don't know to create a new folder or to merge
* with an existing one until we have the title).
*/
_handleHeadBegin: function handleHeadBegin(aElt) {
let frame = this._curFrame;
// after a heading, a previous bookmark is not applicable (for example, for
// the descriptions contained in a <dd>). Neither is any previous head type
frame.previousLink = null;
frame.lastContainerType = Container_Normal;
// It is syntactically possible for a heading to appear after another heading
// but before the <dl> that encloses that folder's contents. This should not
// happen in practice, as the file will contain "<dl></dl>" sequence for
// empty containers.
//
// Just to be on the safe side, if we encounter
// <h3>FOO</h3>
// <h3>BAR</h3>
// <dl>...content 1...</dl>
// <dl>...content 2...</dl>
// we'll pop the stack when we find the h3 for BAR, treating that as an
// implicit ending of the FOO container. The output will be FOO and BAR as
// siblings. If there's another <dl> following (as in "content 2"), those
// items will be treated as further siblings of FOO and BAR
// This special frame popping business, of course, only happens when our
// frame array has more than one element so we can avoid situations where
// we don't have a frame to parse into anymore.
if (frame.containerNesting == 0 && this._frames.length > 1) {
this._frames.pop();
}
// We have to check for some attributes to see if this is a "special"
// folder, which will have different creation rules when the end tag is
// processed.
if (aElt.hasAttribute("personal_toolbar_folder")) {
if (this._isImportDefaults) {
frame.lastContainerType = Container_Toolbar;
}
} else if (aElt.hasAttribute("bookmarks_menu")) {
if (this._isImportDefaults) {
frame.lastContainerType = Container_Menu;
}
} else if (aElt.hasAttribute("unfiled_bookmarks_folder")) {
if (this._isImportDefaults) {
frame.lastContainerType = Container_Unfiled;
}
} else if (aElt.hasAttribute("places_root")) {
if (this._isImportDefaults) {
frame.lastContainerType = Container_Places;
}
} else {
let addDate = aElt.getAttribute("add_date");
if (addDate) {
frame.previousDateAdded = this._convertImportedDateToInternalDate(
addDate
);
}
let modDate = aElt.getAttribute("last_modified");
if (modDate) {
frame.previousLastModifiedDate = this._convertImportedDateToInternalDate(
modDate
);
}
}
this._curFrame.previousText = "";
},
/*
* Handles "<a" tags by creating a new bookmark. The title of the bookmark
* will be the text content, which will be stuffed in previousText for us
* and which will be saved by handleLinkEnd
*/
_handleLinkBegin: function handleLinkBegin(aElt) {
let frame = this._curFrame;
frame.previousItem = null;
frame.previousText = ""; // Will hold link text, clear it.
// Get the attributes we care about.
let href = this._safeTrim(aElt.getAttribute("href"));
let icon = this._safeTrim(aElt.getAttribute("icon"));
let iconUri = this._safeTrim(aElt.getAttribute("icon_uri"));
let lastCharset = this._safeTrim(aElt.getAttribute("last_charset"));
let keyword = this._safeTrim(aElt.getAttribute("shortcuturl"));
let postData = this._safeTrim(aElt.getAttribute("post_data"));
let dateAdded = this._safeTrim(aElt.getAttribute("add_date"));
let lastModified = this._safeTrim(aElt.getAttribute("last_modified"));
let tags = this._safeTrim(aElt.getAttribute("tags"));
// Ignore <a> tags that have no href.
try {
frame.previousLink = Services.io.newURI(href).spec;
} catch (e) {
frame.previousLink = null;
return;
}
let bookmark = {};
// Only set the url for bookmarks.
if (frame.previousLink) {
bookmark.url = frame.previousLink;
}
if (dateAdded) {
bookmark.dateAdded = this._convertImportedDateToInternalDate(dateAdded);
}
// Save bookmark's last modified date.
if (lastModified) {
bookmark.lastModified = this._convertImportedDateToInternalDate(
lastModified
);
}
if (!dateAdded && lastModified) {
bookmark.dateAdded = bookmark.lastModified;
}
if (tags) {
bookmark.tags = 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 (!bookmark.tags.length) {
delete bookmark.tags;
}
}
if (lastCharset) {
bookmark.charset = lastCharset;
}
if (keyword) {
bookmark.keyword = keyword;
}
if (postData) {
bookmark.postData = postData;
}
if (icon) {
bookmark.icon = icon;
}
if (iconUri) {
bookmark.iconUri = iconUri;
}
// Add bookmark to the tree.
frame.folder.children.push(bookmark);
frame.previousItem = bookmark;
},
_handleContainerBegin: function handleContainerBegin() {
this._curFrame.containerNesting++;
},
/**
* Our "indent" count has decreased, and when we hit 0 that means that this
* container is complete and we need to pop back to the outer frame. Never
* pop the toplevel frame
*/
_handleContainerEnd: function handleContainerEnd() {
let frame = this._curFrame;
if (frame.containerNesting > 0) {
frame.containerNesting--;
}
if (this._frames.length > 1 && frame.containerNesting == 0) {
this._frames.pop();
}
},
/**
* Creates the new frame for this heading now that we know the name of the
* container (tokens since the heading open tag will have been placed in
* previousText).
*/
_handleHeadEnd: function handleHeadEnd() {
this._newFrame();
},
/**
* Saves the title for the given bookmark.
*/
_handleLinkEnd: function handleLinkEnd() {
let frame = this._curFrame;
frame.previousText = frame.previousText.trim();
if (frame.previousItem != null) {
frame.previousItem.title = frame.previousText;
}
frame.previousText = "";
},
_openContainer: function openContainer(aElt) {
if (aElt.namespaceURI != "http://www.w3.org/1999/xhtml") {
return;
}
switch (aElt.localName) {
case "h2":
case "h3":
case "h4":
case "h5":
case "h6":
this._handleHeadBegin(aElt);
break;
case "a":
this._handleLinkBegin(aElt);
break;
case "dl":
case "ul":
case "menu":
this._handleContainerBegin();
break;
case "dd":
this._curFrame.inDescription = true;
break;
case "hr":
this._handleSeparator(aElt);
break;
}
},
_closeContainer: function closeContainer(aElt) {
let frame = this._curFrame;
// Although we no longer support importing descriptions, we still need to
// clear any previous text, so that it doesn't get swallowed into other elements.
if (frame.inDescription) {
frame.previousText = "";
frame.inDescription = false;
}
if (aElt.namespaceURI != "http://www.w3.org/1999/xhtml") {
return;
}
switch (aElt.localName) {
case "dl":
case "ul":
case "menu":
this._handleContainerEnd();
break;
case "dt":
break;
case "h1":
// ignore
break;
case "h2":
case "h3":
case "h4":
case "h5":
case "h6":
this._handleHeadEnd();
break;
case "a":
this._handleLinkEnd();
break;
default:
break;
}
},
_appendText: function appendText(str) {
this._curFrame.previousText += str;
},
/**
* Converts a string date in seconds to a date object
*/
_convertImportedDateToInternalDate: function convertImportedDateToInternalDate(
aDate
) {
try {
if (aDate && !isNaN(aDate)) {
return new Date(parseInt(aDate) * 1000); // in bookmarks.html this value is in seconds
}
} catch (ex) {
// Do nothing.
}
return new Date();
},
_walkTreeForImport(aDoc) {
if (!aDoc) {
return;
}
let current = aDoc;
let next;
for (;;) {
switch (current.nodeType) {
case current.ELEMENT_NODE:
this._openContainer(current);
break;
case current.TEXT_NODE:
this._appendText(current.data);
break;
}
if ((next = current.firstChild)) {
current = next;
continue;
}
for (;;) {
if (current.nodeType == current.ELEMENT_NODE) {
this._closeContainer(current);
}
if (current == aDoc) {
return;
}
if ((next = current.nextSibling)) {
current = next;
break;
}
current = current.parentNode;
}
}
},
/**
* Returns the bookmark tree(s) from the importer. These are suitable for
* passing to PlacesUtils.bookmarks.insertTree().
*
* @returns {Array} An array of bookmark trees.
*/
_getBookmarkTrees() {
// If we're not importing defaults, then everything gets imported under the
// Bookmarks menu.
if (!this._isImportDefaults) {
return [this._bookmarkTree];
}
// If we are importing defaults, we need to separate out the top-level
// default folders into separate items, for the caller to pass into insertTree.
let bookmarkTrees = [this._bookmarkTree];
// The children of this "root" element will contain normal children of the
// bookmark menu as well as the places roots. Hence, we need to filter out
// the separate roots, but keep the children that are relevant to the
// bookmark menu.
this._bookmarkTree.children = this._bookmarkTree.children.filter(child => {
if (
child.guid &&
PlacesUtils.bookmarks.userContentRoots.includes(child.guid)
) {
bookmarkTrees.push(child);
return false;
}
return true;
});
return bookmarkTrees;
},
/**
* Imports the bookmarks from the importer into the places database.
*
* @param {BookmarkImporter} importer The importer from which to get the
* bookmark information.
*/
async _importBookmarks() {
if (this._isImportDefaults) {
await PlacesUtils.bookmarks.eraseEverything();
}
let bookmarksTrees = this._getBookmarkTrees();
for (let tree of bookmarksTrees) {
if (!tree.children.length) {
continue;
}
// Give the tree the source.
tree.source = this._source;
await PlacesUtils.bookmarks.insertTree(tree, {
fixupOrSkipInvalidEntries: true,
});
insertFaviconsForTree(tree);
}
},
/**
* Imports data into the places database from the supplied url.
*
* @param {String} href The url to import data from.
*/
async importFromURL(href) {
let data = await fetchData(href);
this._walkTreeForImport(data);
await this._importBookmarks();
},
};
function BookmarkExporter(aBookmarksTree) {
// Create a map of the roots.
let rootsMap = new Map();
for (let child of aBookmarksTree.children) {
if (child.root) {
rootsMap.set(child.root, child);
// Also take the opportunity to get the correctly localised title for the
// root.
child.title = PlacesUtils.bookmarks.getLocalizedTitle(child);
}
}
// For backwards compatibility reasons the bookmarks menu is the root, while
// the bookmarks toolbar and unfiled bookmarks will be child items.
this._root = rootsMap.get("bookmarksMenuFolder");
for (let key of ["toolbarFolder", "unfiledBookmarksFolder"]) {
let root = rootsMap.get(key);
if (root.children && root.children.length) {
if (!this._root.children) {
this._root.children = [];
}
this._root.children.push(root);
}
}
}
BookmarkExporter.prototype = {
exportToFile: function exportToFile(aFilePath) {
return (async () => {
// Create a file that can be accessed by the current user only.
let out = FileUtils.openAtomicFileOutputStream(
new FileUtils.File(aFilePath)
);
try {
// We need a buffered output stream for performance. See bug 202477.
let bufferedOut = Cc[
"@mozilla.org/network/buffered-output-stream;1"
].createInstance(Ci.nsIBufferedOutputStream);
bufferedOut.init(out, 4096);
try {
// Write bookmarks in UTF-8.
this._converterOut = Cc[
"@mozilla.org/intl/converter-output-stream;1"
].createInstance(Ci.nsIConverterOutputStream);
this._converterOut.init(bufferedOut, "utf-8");
try {
this._writeHeader();
await this._writeContainer(this._root);
// Retain the target file on success only.
bufferedOut.QueryInterface(Ci.nsISafeOutputStream).finish();
} finally {
this._converterOut.close();
this._converterOut = null;
}
} finally {
bufferedOut.close();
}
} finally {
out.close();
}
})();
},
_converterOut: null,
_write(aText) {
this._converterOut.writeString(aText || "");
},
_writeAttribute(aName, aValue) {
this._write(" " + aName + '="' + aValue + '"');
},
_writeLine(aText) {
this._write(aText + "\n");
},
_writeHeader() {
this._writeLine("<!DOCTYPE NETSCAPE-Bookmark-file-1>");
this._writeLine("<!-- This is an automatically generated file.");
this._writeLine(" It will be read and overwritten.");
this._writeLine(" DO NOT EDIT! -->");
this._writeLine(
'<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">'
);
this._writeLine("<TITLE>Bookmarks</TITLE>");
},
async _writeContainer(aItem, aIndent = "") {
if (aItem == this._root) {
this._writeLine("<H1>" + escapeHtmlEntities(this._root.title) + "</H1>");
this._writeLine("");
} else {
this._write(aIndent + "<DT><H3");
this._writeDateAttributes(aItem);
if (aItem.root === "toolbarFolder") {
this._writeAttribute("PERSONAL_TOOLBAR_FOLDER", "true");
} else if (aItem.root === "unfiledBookmarksFolder") {
this._writeAttribute("UNFILED_BOOKMARKS_FOLDER", "true");
}
this._writeLine(">" + escapeHtmlEntities(aItem.title) + "</H3>");
}
this._writeLine(aIndent + "<DL><p>");
if (aItem.children) {
await this._writeContainerContents(aItem, aIndent);
}
if (aItem == this._root) {
this._writeLine(aIndent + "</DL>");
} else {
this._writeLine(aIndent + "</DL><p>");
}
},
async _writeContainerContents(aItem, aIndent) {
let localIndent = aIndent + EXPORT_INDENT;
for (let child of aItem.children) {
if (child.type == PlacesUtils.TYPE_X_MOZ_PLACE_CONTAINER) {
await this._writeContainer(child, localIndent);
} else if (child.type == PlacesUtils.TYPE_X_MOZ_PLACE_SEPARATOR) {
this._writeSeparator(child, localIndent);
} else {
await this._writeItem(child, localIndent);
}
}
},
_writeSeparator(aItem, aIndent) {
this._write(aIndent + "<HR");
// We keep exporting separator titles, but don't support them anymore.
if (aItem.title) {
this._writeAttribute("NAME", escapeHtmlEntities(aItem.title));
}
this._write(">");
},
async _writeItem(aItem, aIndent) {
try {
NetUtil.newURI(aItem.uri);
} catch (ex) {
// If the item URI is invalid, skip the item instead of failing later.
return;
}
this._write(aIndent + "<DT><A");
this._writeAttribute("HREF", escapeUrl(aItem.uri));
this._writeDateAttributes(aItem);
await this._writeFaviconAttribute(aItem);
if (aItem.keyword) {
this._writeAttribute("SHORTCUTURL", escapeHtmlEntities(aItem.keyword));
if (aItem.postData) {
this._writeAttribute("POST_DATA", escapeHtmlEntities(aItem.postData));
}
}
if (aItem.charset) {
this._writeAttribute("LAST_CHARSET", escapeHtmlEntities(aItem.charset));
}
if (aItem.tags) {
this._writeAttribute("TAGS", escapeHtmlEntities(aItem.tags));
}
this._writeLine(">" + escapeHtmlEntities(aItem.title) + "</A>");
},
_writeDateAttributes(aItem) {
if (aItem.dateAdded) {
this._writeAttribute(
"ADD_DATE",
Math.floor(aItem.dateAdded / MICROSEC_PER_SEC)
);
}
if (aItem.lastModified) {
this._writeAttribute(
"LAST_MODIFIED",
Math.floor(aItem.lastModified / MICROSEC_PER_SEC)
);
}
},
async _writeFaviconAttribute(aItem) {
if (!aItem.iconuri) {
return;
}
let favicon;
try {
favicon = await PlacesUtils.promiseFaviconData(aItem.uri);
} catch (ex) {
Cu.reportError("Unexpected Error trying to fetch icon data");
return;
}
this._writeAttribute("ICON_URI", escapeUrl(favicon.uri.spec));
if (!favicon.uri.schemeIs("chrome") && favicon.dataLen > 0) {
let faviconContents =
"data:image/png;base64," +
base64EncodeString(String.fromCharCode.apply(String, favicon.data));
this._writeAttribute("ICON", faviconContents);
}
},
};
/**
* 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) {
Cu.reportError("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) {
Cu.reportError("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);
}
}
}
/**
* Handles fetching data from a URL.
*
* @param {String} href The url to fetch data from.
* @return {Promise} Returns a promise that is resolved with the data once
* the fetch is complete, or is rejected if it fails.
*/
function fetchData(href) {
return new Promise((resolve, reject) => {
let xhr = new XMLHttpRequest();
xhr.onload = () => {
resolve(xhr.responseXML);
};
xhr.onabort = xhr.onerror = xhr.ontimeout = () => {
reject(new Error("xmlhttprequest failed"));
};
xhr.open("GET", href);
xhr.responseType = "document";
xhr.overrideMimeType("text/html");
xhr.send();
});
}
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