113 lines
3.1 KiB
JavaScript
113 lines
3.1 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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this.EXPORTED_SYMBOLS = ["Utils"];
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const Cu = Components.utils;
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const Cc = Components.classes;
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const Ci = Components.interfaces;
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Cu.import("resource://gre/modules/Services.jsm", this);
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Cu.import("resource://gre/modules/XPCOMUtils.jsm", this);
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XPCOMUtils.defineLazyServiceGetter(this, "serializationHelper",
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"@mozilla.org/network/serialization-helper;1",
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"nsISerializationHelper");
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XPCOMUtils.defineLazyGetter(this, "SERIALIZED_SYSTEMPRINCIPAL", function() {
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return Utils.serializePrincipal(Services.scriptSecurityManager.getSystemPrincipal());
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});
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function debug(msg) {
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Services.console.logStringMessage("Utils: " + msg);
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}
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this.Utils = Object.freeze({
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get SERIALIZED_SYSTEMPRINCIPAL() { return SERIALIZED_SYSTEMPRINCIPAL; },
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makeURI: function (url) {
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return Services.io.newURI(url, null, null);
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},
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makeInputStream: function (aString) {
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let stream = Cc["@mozilla.org/io/string-input-stream;1"].
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createInstance(Ci.nsISupportsCString);
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stream.data = aString;
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return stream; // XPConnect will QI this to nsIInputStream for us.
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},
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/**
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* Returns true if the |url| passed in is part of the given root |domain|.
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* For example, if |url| is "www.mozilla.org", and we pass in |domain| as
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* "mozilla.org", this will return true. It would return false the other way
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* around.
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*/
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hasRootDomain: function (url, domain) {
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let host;
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try {
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host = this.makeURI(url).host;
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} catch (e) {
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// The given URL probably doesn't have a host.
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return false;
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}
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let index = host.indexOf(domain);
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if (index == -1)
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return false;
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if (host == domain)
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return true;
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let prevChar = host[index - 1];
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return (index == (host.length - domain.length)) &&
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(prevChar == "." || prevChar == "/");
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},
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shallowCopy: function (obj) {
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let retval = {};
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for (let key of Object.keys(obj)) {
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retval[key] = obj[key];
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}
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return retval;
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},
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/**
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* Serialize principal data.
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*
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* @param {nsIPrincipal} principal The principal to serialize.
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* @return {String} The base64 encoded principal data.
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*/
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serializePrincipal(principal) {
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if (!principal)
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return null;
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return serializationHelper.serializeToString(principal);
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},
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/**
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* Deserialize a base64 encoded principal (serialized with
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* Utils::serializePrincipal).
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*
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* @param {String} principal_b64 A base64 encoded serialized principal.
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* @return {nsIPrincipal} A deserialized principal.
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*/
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deserializePrincipal(principal_b64) {
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if (!principal_b64)
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return null;
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try {
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let principal = serializationHelper.deserializeObject(principal_b64);
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principal.QueryInterface(Ci.nsIPrincipal);
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return principal;
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} catch (e) {
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debug(`Failed to deserialize principal_b64 '${principal_b64}' ${e}`);
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}
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return null;
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}
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});
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