gecko/toolkit/modules/BrowserUtils.jsm
2014-02-08 17:40:27 -08:00

68 lines
2.0 KiB
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/. */
"use strict";
this.EXPORTED_SYMBOLS = [ "BrowserUtils" ];
const {interfaces: Ci, utils: Cu} = Components;
Cu.import("resource://gre/modules/Services.jsm");
this.BrowserUtils = {
/**
* urlSecurityCheck: JavaScript wrapper for checkLoadURIWithPrincipal
* and checkLoadURIStrWithPrincipal.
* If |aPrincipal| is not allowed to link to |aURL|, this function throws with
* an error message.
*
* @param aURL
* The URL a page has linked to. This could be passed either as a string
* or as a nsIURI object.
* @param aPrincipal
* The principal of the document from which aURL came.
* @param aFlags
* Flags to be passed to checkLoadURIStr. If undefined,
* nsIScriptSecurityManager.STANDARD will be passed.
*/
urlSecurityCheck: function(aURL, aPrincipal, aFlags) {
var secMan = Services.scriptSecurityManager;
if (aFlags === undefined) {
aFlags = secMan.STANDARD;
}
try {
if (aURL instanceof Ci.nsIURI)
secMan.checkLoadURIWithPrincipal(aPrincipal, aURL, aFlags);
else
secMan.checkLoadURIStrWithPrincipal(aPrincipal, aURL, aFlags);
} catch (e) {
let principalStr = "";
try {
principalStr = " from " + aPrincipal.URI.spec;
}
catch(e2) { }
throw "Load of " + aURL + principalStr + " denied.";
}
},
/**
* Constructs a new URI, using nsIIOService.
* @param aURL The URI spec.
* @param aOriginCharset The charset of the URI.
* @param aBaseURI Base URI to resolve aURL, or null.
* @return an nsIURI object based on aURL.
*/
makeURI: function(aURL, aOriginCharset, aBaseURI) {
return Services.io.newURI(aURL, aOriginCharset, aBaseURI);
},
makeFileURI: function(aFile) {
return Services.io.newFileURI(aFile);
},
};