// Copyright (c) 2008-2010 Kris Maglione // // This work is licensed for reuse under an MIT license. Details are // given in the LICENSE.txt file included with this file. "use strict"; /* Adds support for data: URIs with chrome privileges * and fragment identifiers. * * "chrome-data:" [; ]* "," [] * * By Kris Maglione, ideas from Ed Anuff's nsChromeExtensionHandler. */ const Ci = Components.interfaces, Cc = Components.classes; Components.utils.import("resource://gre/modules/XPCOMUtils.jsm"); const ioService = Cc["@mozilla.org/network/io-service;1"].getService(Ci.nsIIOService); const prefs = Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefService) .getBranch("extensions.dactyl."); const systemPrincipal = Cc["@mozilla.org/systemprincipal;1"].getService(Ci.nsIPrincipal); function dataURL(type, data) "data:" + (type || "application/xml;encoding=UTF-8") + "," + escape(data); function makeChannel(url, orig) { try { if (url == null) return fakeChannel(); if (typeof url === "function") url = dataURL.apply(null, url()); let uri = ioService.newURI(url, null, null); let channel = ioService.newChannelFromURI(uri); channel.contentCharset = "UTF-8"; channel.owner = systemPrincipal; channel.originalURI = orig; return channel; } catch (e) { Components.utils.reportError(e); throw e; } } function fakeChannel(orig) makeChannel("chrome://dactyl/content/does/not/exist", orig); function redirect(to, orig, time) { let html = .toXMLString(); return makeChannel(dataURL('text/html', html), ioService.newURI(to, null, null)); } function Factory(clas) ({ createInstance: function (outer, iid) { if (outer != null) throw Components.results.NS_ERROR_NO_AGGREGATION; if (!clas.instance) clas.instance = new clas(); return clas.instance.QueryInterface(iid); } }); function ChromeData() {} ChromeData.prototype = { contractID: "@mozilla.org/network/protocol;1?name=chrome-data", classID: Components.ID("{c1b67a07-18f7-4e13-b361-2edcc35a5a0d}"), classDescription: "Data URIs with chrome privileges", QueryInterface: XPCOMUtils.generateQI([Ci.nsIProtocolHandler]), _xpcom_factory: Factory(ChromeData), scheme: "chrome-data", defaultPort: -1, allowPort: function (port, scheme) false, protocolFlags: Ci.nsIProtocolHandler.URI_NORELATIVE | Ci.nsIProtocolHandler.URI_NOAUTH | Ci.nsIProtocolHandler.URI_IS_UI_RESOURCE, newURI: function (spec, charset, baseURI) { var uri = Components.classes["@mozilla.org/network/standard-url;1"] .createInstance(Components.interfaces.nsIStandardURL) .QueryInterface(Components.interfaces.nsIURI); uri.init(uri.URLTYPE_STANDARD, this.defaultPort, spec, charset, null); return uri; }, newChannel: function (uri) { try { if (uri.scheme == this.scheme) return makeChannel(uri.spec.replace(/^.*?:\/*(.*)(?:#.*)?/, "data:$1"), uri); } catch (e) {} return fakeChannel(); } }; function Dactyl() { this.wrappedJSObject = this; this.HELP_TAGS = {}; this.FILE_MAP = {}; this.OVERLAY_MAP = {}; this.pages = {}; for each (let pref in ["appName", "fileExt", "host", "hostbin", "idName", "name"]) this[pref] = prefs.getComplexValue(pref, Ci.nsISupportsString).data; this.addonID = this.name + "@dactyl.googlecode.com"; } Dactyl.prototype = { contractID: "@mozilla.org/network/protocol;1?name=dactyl", classID: Components.ID("{9c8f2530-51c8-4d41-b356-319e0b155c44}"), classDescription: "Dactyl utility protocol", QueryInterface: XPCOMUtils.generateQI([Ci.nsIProtocolHandler]), _xpcom_factory: Factory(Dactyl), get version() prefs.getComplexValue("version", Ci.nsISupportsString).data, init: function (obj) { for each (let prop in ["HELP_TAGS", "FILE_MAP", "OVERLAY_MAP"]) { this[prop] = this[prop].constructor(); for (let [k, v] in Iterator(obj[prop] || {})) this[prop][k] = v; } this.initialized = true; }, scheme: "dactyl", defaultPort: -1, allowPort: function (port, scheme) false, protocolFlags: 0 | Ci.nsIProtocolHandler.URI_IS_UI_RESOURCE | Ci.nsIProtocolHandler.URI_IS_LOCAL_RESOURCE, newURI: function (spec, charset, baseURI) { var uri = Cc["@mozilla.org/network/standard-url;1"] .createInstance(Ci.nsIStandardURL) .QueryInterface(Ci.nsIURI); uri.init(uri.URLTYPE_STANDARD, this.defaultPort, spec, charset, baseURI); return uri; }, newChannel: function (uri) { try { if (uri.host != "content" && !("all" in this.FILE_MAP)) return redirect(uri.spec, uri, 1); let path = decodeURIComponent(uri.path.replace(/^\/|#.*/g, "")); switch(uri.host) { case "content": return makeChannel(this.pages[path], uri); case "help": return makeChannel(this.FILE_MAP[path], uri); case "help-overlay": return makeChannel(this.OVERLAY_MAP[path], uri); case "help-tag": let tag = decodeURIComponent(uri.path.substr(1)); if (tag in this.FILE_MAP) return redirect("dactyl://help/" + tag, uri); if (tag in this.HELP_TAGS) return redirect("dactyl://help/" + this.HELP_TAGS[tag] + "#" + tag, uri); } } catch (e) {} return fakeChannel(uri); } }; function AboutHandler() {} AboutHandler.prototype = { classDescription: "About " + Dactyl.prototype.appName + " Page", classID: Components.ID("81495d80-89ee-4c36-a88d-ea7c4e5ac63f"), contractID: "@mozilla.org/network/protocol/about;1?what=" + Dactyl.prototype.name, QueryInterface: XPCOMUtils.generateQI([Ci.nsIAboutModule]), newChannel: function (uri) { let channel = Cc["@mozilla.org/network/io-service;1"].getService(Ci.nsIIOService) .newChannel("chrome://dactyl/content/about.xul", null, null); channel.originalURI = uri; return channel; }, getURIFlags: function (uri) Ci.nsIAboutModule.ALLOW_SCRIPT, }; // A hack to get information about interfaces. // Doesn't belong here. function Shim() {} Shim.prototype = { contractID: "@dactyl.googlecode.com/base/xpc-interface-shim", classID: Components.ID("{f4506a17-5b4d-4cd9-92d4-2eb4630dc388}"), classDescription: "XPCOM empty interface shim", QueryInterface: function (iid) { if (iid.equals(Ci.nsISecurityCheckedComponent)) throw Components.results.NS_ERROR_NO_INTERFACE; return this; }, getHelperForLanguage: function () null, getInterfaces: function (count) { count.value = 0; } }; if (XPCOMUtils.generateNSGetFactory) const NSGetFactory = XPCOMUtils.generateNSGetFactory([AboutHandler, ChromeData, Dactyl, Shim]); else const NSGetModule = XPCOMUtils.generateNSGetModule([AboutHandler, ChromeData, Dactyl, Shim]); var EXPORTED_SYMBOLS = ["NSGetFactory"]; // vim: set fdm=marker sw=4 ts=4 et: