mirror of
https://github.com/mozilla/gecko-dev.git
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756 lines
26 KiB
JavaScript
756 lines
26 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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/**
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* The AddonUpdateChecker is responsible for retrieving the update information
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* from an add-on's remote update manifest.
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*/
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"use strict";
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const Cc = Components.classes;
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const Ci = Components.interfaces;
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const Cu = Components.utils;
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this.EXPORTED_SYMBOLS = [ "AddonUpdateChecker" ];
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const TIMEOUT = 60 * 1000;
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const PREFIX_NS_RDF = "http://www.w3.org/1999/02/22-rdf-syntax-ns#";
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const PREFIX_NS_EM = "http://www.mozilla.org/2004/em-rdf#";
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const PREFIX_ITEM = "urn:mozilla:item:";
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const PREFIX_EXTENSION = "urn:mozilla:extension:";
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const PREFIX_THEME = "urn:mozilla:theme:";
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const TOOLKIT_ID = "toolkit@mozilla.org"
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const XMLURI_PARSE_ERROR = "http://www.mozilla.org/newlayout/xml/parsererror.xml"
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const PREF_UPDATE_REQUIREBUILTINCERTS = "extensions.update.requireBuiltInCerts";
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Components.utils.import("resource://gre/modules/Services.jsm");
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Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "AddonManager",
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"resource://gre/modules/AddonManager.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "AddonRepository",
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"resource://gre/modules/AddonRepository.jsm");
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// Shared code for suppressing bad cert dialogs.
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XPCOMUtils.defineLazyGetter(this, "CertUtils", function certUtilsLazyGetter() {
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let certUtils = {};
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Components.utils.import("resource://gre/modules/CertUtils.jsm", certUtils);
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return certUtils;
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});
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var gRDF = Cc["@mozilla.org/rdf/rdf-service;1"].
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getService(Ci.nsIRDFService);
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["LOG", "WARN", "ERROR"].forEach(function(aName) {
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this.__defineGetter__(aName, function logFuncGetter() {
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Components.utils.import("resource://gre/modules/AddonLogging.jsm");
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LogManager.getLogger("addons.updates", this);
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return this[aName];
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});
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}, this);
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/**
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* A serialisation method for RDF data that produces an identical string
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* for matching RDF graphs.
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* The serialisation is not complete, only assertions stemming from a given
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* resource are included, multiple references to the same resource are not
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* permitted, and the RDF prolog and epilog are not included.
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* RDF Blob and Date literals are not supported.
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*/
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function RDFSerializer() {
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this.cUtils = Cc["@mozilla.org/rdf/container-utils;1"].
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getService(Ci.nsIRDFContainerUtils);
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this.resources = [];
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}
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RDFSerializer.prototype = {
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INDENT: " ", // The indent used for pretty-printing
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resources: null, // Array of the resources that have been found
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/**
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* Escapes characters from a string that should not appear in XML.
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*
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* @param aString
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* The string to be escaped
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* @return a string with all characters invalid in XML character data
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* converted to entity references.
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*/
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escapeEntities: function RDFS_escapeEntities(aString) {
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aString = aString.replace(/&/g, "&");
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aString = aString.replace(/</g, "<");
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aString = aString.replace(/>/g, ">");
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return aString.replace(/"/g, """);
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},
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/**
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* Serializes all the elements of an RDF container.
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*
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* @param aDs
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* The RDF datasource
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* @param aContainer
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* The RDF container to output the child elements of
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* @param aIndent
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* The current level of indent for pretty-printing
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* @return a string containing the serialized elements.
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*/
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serializeContainerItems: function RDFS_serializeContainerItems(aDs, aContainer,
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aIndent) {
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var result = "";
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var items = aContainer.GetElements();
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while (items.hasMoreElements()) {
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var item = items.getNext().QueryInterface(Ci.nsIRDFResource);
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result += aIndent + "<RDF:li>\n"
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result += this.serializeResource(aDs, item, aIndent + this.INDENT);
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result += aIndent + "</RDF:li>\n"
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}
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return result;
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},
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/**
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* Serializes all em:* (see EM_NS) properties of an RDF resource except for
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* the em:signature property. As this serialization is to be compared against
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* the manifest signature it cannot contain the em:signature property itself.
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*
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* @param aDs
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* The RDF datasource
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* @param aResource
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* The RDF resource that contains the properties to serialize
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* @param aIndent
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* The current level of indent for pretty-printing
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* @return a string containing the serialized properties.
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* @throws if the resource contains a property that cannot be serialized
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*/
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serializeResourceProperties: function RDFS_serializeResourceProperties(aDs,
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aResource,
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aIndent) {
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var result = "";
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var items = [];
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var arcs = aDs.ArcLabelsOut(aResource);
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while (arcs.hasMoreElements()) {
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var arc = arcs.getNext().QueryInterface(Ci.nsIRDFResource);
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if (arc.ValueUTF8.substring(0, PREFIX_NS_EM.length) != PREFIX_NS_EM)
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continue;
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var prop = arc.ValueUTF8.substring(PREFIX_NS_EM.length);
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if (prop == "signature")
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continue;
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var targets = aDs.GetTargets(aResource, arc, true);
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while (targets.hasMoreElements()) {
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var target = targets.getNext();
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if (target instanceof Ci.nsIRDFResource) {
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var item = aIndent + "<em:" + prop + ">\n";
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item += this.serializeResource(aDs, target, aIndent + this.INDENT);
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item += aIndent + "</em:" + prop + ">\n";
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items.push(item);
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}
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else if (target instanceof Ci.nsIRDFLiteral) {
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items.push(aIndent + "<em:" + prop + ">" +
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this.escapeEntities(target.Value) + "</em:" + prop + ">\n");
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}
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else if (target instanceof Ci.nsIRDFInt) {
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items.push(aIndent + "<em:" + prop + " NC:parseType=\"Integer\">" +
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target.Value + "</em:" + prop + ">\n");
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}
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else {
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throw Components.Exception("Cannot serialize unknown literal type");
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}
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}
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}
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items.sort();
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result += items.join("");
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return result;
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},
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/**
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* Recursively serializes an RDF resource and all resources it links to.
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* This will only output EM_NS properties and will ignore any em:signature
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* property.
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*
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* @param aDs
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* The RDF datasource
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* @param aResource
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* The RDF resource to serialize
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* @param aIndent
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* The current level of indent for pretty-printing. If undefined no
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* indent will be added
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* @return a string containing the serialized resource.
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* @throws if the RDF data contains multiple references to the same resource.
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*/
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serializeResource: function RDFS_serializeResource(aDs, aResource, aIndent) {
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if (this.resources.indexOf(aResource) != -1 ) {
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// We cannot output multiple references to the same resource.
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throw Components.Exception("Cannot serialize multiple references to " + aResource.Value);
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}
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if (aIndent === undefined)
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aIndent = "";
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this.resources.push(aResource);
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var container = null;
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var type = "Description";
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if (this.cUtils.IsSeq(aDs, aResource)) {
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type = "Seq";
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container = this.cUtils.MakeSeq(aDs, aResource);
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}
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else if (this.cUtils.IsAlt(aDs, aResource)) {
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type = "Alt";
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container = this.cUtils.MakeAlt(aDs, aResource);
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}
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else if (this.cUtils.IsBag(aDs, aResource)) {
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type = "Bag";
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container = this.cUtils.MakeBag(aDs, aResource);
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}
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var result = aIndent + "<RDF:" + type;
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if (!gRDF.IsAnonymousResource(aResource))
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result += " about=\"" + this.escapeEntities(aResource.ValueUTF8) + "\"";
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result += ">\n";
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if (container)
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result += this.serializeContainerItems(aDs, container, aIndent + this.INDENT);
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result += this.serializeResourceProperties(aDs, aResource, aIndent + this.INDENT);
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result += aIndent + "</RDF:" + type + ">\n";
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return result;
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}
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}
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/**
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* Parses an RDF style update manifest into an array of update objects.
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*
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* @param aId
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* The ID of the add-on being checked for updates
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* @param aUpdateKey
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* An optional update key for the add-on
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* @param aRequest
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* The XMLHttpRequest that has retrieved the update manifest
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* @return an array of update objects
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* @throws if the update manifest is invalid in any way
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*/
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function parseRDFManifest(aId, aUpdateKey, aRequest) {
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function EM_R(aProp) {
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return gRDF.GetResource(PREFIX_NS_EM + aProp);
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}
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function getValue(aLiteral) {
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if (aLiteral instanceof Ci.nsIRDFLiteral)
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return aLiteral.Value;
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if (aLiteral instanceof Ci.nsIRDFResource)
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return aLiteral.Value;
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if (aLiteral instanceof Ci.nsIRDFInt)
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return aLiteral.Value;
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return null;
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}
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function getProperty(aDs, aSource, aProperty) {
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return getValue(aDs.GetTarget(aSource, EM_R(aProperty), true));
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}
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function getRequiredProperty(aDs, aSource, aProperty) {
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let value = getProperty(aDs, aSource, aProperty);
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if (!value)
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throw Components.Exception("Update manifest is missing a required " + aProperty + " property.");
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return value;
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}
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let rdfParser = Cc["@mozilla.org/rdf/xml-parser;1"].
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createInstance(Ci.nsIRDFXMLParser);
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let ds = Cc["@mozilla.org/rdf/datasource;1?name=in-memory-datasource"].
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createInstance(Ci.nsIRDFDataSource);
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rdfParser.parseString(ds, aRequest.channel.URI, aRequest.responseText);
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// Differentiating between add-on types is deprecated
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let extensionRes = gRDF.GetResource(PREFIX_EXTENSION + aId);
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let themeRes = gRDF.GetResource(PREFIX_THEME + aId);
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let itemRes = gRDF.GetResource(PREFIX_ITEM + aId);
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let addonRes = ds.ArcLabelsOut(extensionRes).hasMoreElements() ? extensionRes
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: ds.ArcLabelsOut(themeRes).hasMoreElements() ? themeRes
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: itemRes;
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// If we have an update key then the update manifest must be signed
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if (aUpdateKey) {
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let signature = getProperty(ds, addonRes, "signature");
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if (!signature)
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throw Components.Exception("Update manifest for " + aId + " does not contain a required signature");
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let serializer = new RDFSerializer();
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let updateString = null;
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try {
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updateString = serializer.serializeResource(ds, addonRes);
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}
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catch (e) {
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throw Components.Exception("Failed to generate signed string for " + aId + ". Serializer threw " + e,
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e.result);
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}
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let result = false;
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try {
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let verifier = Cc["@mozilla.org/security/datasignatureverifier;1"].
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getService(Ci.nsIDataSignatureVerifier);
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result = verifier.verifyData(updateString, signature, aUpdateKey);
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}
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catch (e) {
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throw Components.Exception("The signature or updateKey for " + aId + " is malformed." +
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"Verifier threw " + e, e.result);
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}
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if (!result)
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throw Components.Exception("The signature for " + aId + " was not created by the add-on's updateKey");
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}
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let updates = ds.GetTarget(addonRes, EM_R("updates"), true);
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// A missing updates property doesn't count as a failure, just as no avialable
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// update information
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if (!updates) {
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WARN("Update manifest for " + aId + " did not contain an updates property");
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return [];
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}
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if (!(updates instanceof Ci.nsIRDFResource))
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throw Components.Exception("Missing updates property for " + addonRes.Value);
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let cu = Cc["@mozilla.org/rdf/container-utils;1"].
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getService(Ci.nsIRDFContainerUtils);
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if (!cu.IsContainer(ds, updates))
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throw Components.Exception("Updates property was not an RDF container");
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let results = [];
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let ctr = Cc["@mozilla.org/rdf/container;1"].
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createInstance(Ci.nsIRDFContainer);
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ctr.Init(ds, updates);
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let items = ctr.GetElements();
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while (items.hasMoreElements()) {
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let item = items.getNext().QueryInterface(Ci.nsIRDFResource);
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let version = getProperty(ds, item, "version");
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if (!version) {
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WARN("Update manifest is missing a required version property.");
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continue;
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}
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LOG("Found an update entry for " + aId + " version " + version);
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let targetApps = ds.GetTargets(item, EM_R("targetApplication"), true);
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while (targetApps.hasMoreElements()) {
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let targetApp = targetApps.getNext().QueryInterface(Ci.nsIRDFResource);
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let appEntry = {};
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try {
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appEntry.id = getRequiredProperty(ds, targetApp, "id");
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appEntry.minVersion = getRequiredProperty(ds, targetApp, "minVersion");
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appEntry.maxVersion = getRequiredProperty(ds, targetApp, "maxVersion");
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}
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catch (e) {
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WARN(e);
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continue;
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}
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let result = {
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id: aId,
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version: version,
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updateURL: getProperty(ds, targetApp, "updateLink"),
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updateHash: getProperty(ds, targetApp, "updateHash"),
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updateInfoURL: getProperty(ds, targetApp, "updateInfoURL"),
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strictCompatibility: getProperty(ds, targetApp, "strictCompatibility") == "true",
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targetApplications: [appEntry]
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};
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if (result.updateURL && AddonManager.checkUpdateSecurity &&
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result.updateURL.substring(0, 6) != "https:" &&
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(!result.updateHash || result.updateHash.substring(0, 3) != "sha")) {
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WARN("updateLink " + result.updateURL + " is not secure and is not verified" +
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" by a strong enough hash (needs to be sha1 or stronger).");
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delete result.updateURL;
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delete result.updateHash;
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}
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results.push(result);
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}
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}
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return results;
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}
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/**
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* Starts downloading an update manifest and then passes it to an appropriate
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* parser to convert to an array of update objects
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*
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* @param aId
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* The ID of the add-on being checked for updates
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* @param aUpdateKey
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* An optional update key for the add-on
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* @param aUrl
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* The URL of the update manifest
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* @param aObserver
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* An observer to pass results to
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*/
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function UpdateParser(aId, aUpdateKey, aUrl, aObserver) {
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this.id = aId;
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this.updateKey = aUpdateKey;
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this.observer = aObserver;
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this.url = aUrl;
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this.timer = Cc["@mozilla.org/timer;1"].
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createInstance(Ci.nsITimer);
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this.timer.initWithCallback(this, TIMEOUT, Ci.nsITimer.TYPE_ONE_SHOT);
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let requireBuiltIn = true;
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try {
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requireBuiltIn = Services.prefs.getBoolPref(PREF_UPDATE_REQUIREBUILTINCERTS);
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}
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catch (e) {
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}
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LOG("Requesting " + aUrl);
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try {
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this.request = Cc["@mozilla.org/xmlextras/xmlhttprequest;1"].
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createInstance(Ci.nsIXMLHttpRequest);
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this.request.open("GET", this.url, true);
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this.request.channel.notificationCallbacks = new CertUtils.BadCertHandler(!requireBuiltIn);
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this.request.channel.loadFlags |= Ci.nsIRequest.LOAD_BYPASS_CACHE;
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// Prevent the request from writing to cache.
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this.request.channel.loadFlags |= Ci.nsIRequest.INHIBIT_CACHING;
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this.request.overrideMimeType("text/xml");
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var self = this;
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this.request.addEventListener("load", function loadEventListener(event) { self.onLoad() }, false);
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this.request.addEventListener("error", function errorEventListener(event) { self.onError() }, false);
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this.request.send(null);
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}
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catch (e) {
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ERROR("Failed to request update manifest", e);
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}
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}
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UpdateParser.prototype = {
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id: null,
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updateKey: null,
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observer: null,
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request: null,
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timer: null,
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url: null,
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/**
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* Called when the manifest has been successfully loaded.
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*/
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onLoad: function UP_onLoad() {
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this.timer.cancel();
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this.timer = null;
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let request = this.request;
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this.request = null;
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let requireBuiltIn = true;
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try {
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requireBuiltIn = Services.prefs.getBoolPref(PREF_UPDATE_REQUIREBUILTINCERTS);
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}
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catch (e) {
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}
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try {
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CertUtils.checkCert(request.channel, !requireBuiltIn);
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}
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catch (e) {
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this.notifyError(AddonUpdateChecker.ERROR_DOWNLOAD_ERROR);
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return;
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}
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if (!Components.isSuccessCode(request.status)) {
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WARN("Request failed: " + this.url + " - " + request.status);
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this.notifyError(AddonUpdateChecker.ERROR_DOWNLOAD_ERROR);
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return;
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}
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let channel = request.channel;
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if (channel instanceof Ci.nsIHttpChannel && !channel.requestSucceeded) {
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WARN("Request failed: " + this.url + " - " + channel.responseStatus +
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": " + channel.responseStatusText);
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this.notifyError(AddonUpdateChecker.ERROR_DOWNLOAD_ERROR);
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return;
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}
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let xml = request.responseXML;
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if (!xml || xml.documentElement.namespaceURI == XMLURI_PARSE_ERROR) {
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WARN("Update manifest was not valid XML");
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this.notifyError(AddonUpdateChecker.ERROR_PARSE_ERROR);
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return;
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}
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// We currently only know about RDF update manifests
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if (xml.documentElement.namespaceURI == PREFIX_NS_RDF) {
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let results = null;
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try {
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results = parseRDFManifest(this.id, this.updateKey, request);
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}
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catch (e) {
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WARN(e);
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this.notifyError(AddonUpdateChecker.ERROR_PARSE_ERROR);
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return;
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}
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if ("onUpdateCheckComplete" in this.observer) {
|
|
try {
|
|
this.observer.onUpdateCheckComplete(results);
|
|
}
|
|
catch (e) {
|
|
WARN("onUpdateCheckComplete notification failed", e);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
WARN("Update manifest had an unrecognised namespace: " + xml.documentElement.namespaceURI);
|
|
this.notifyError(AddonUpdateChecker.ERROR_UNKNOWN_FORMAT);
|
|
},
|
|
|
|
/**
|
|
* Called when the manifest failed to load.
|
|
*/
|
|
onError: function UP_onError() {
|
|
this.timer.cancel();
|
|
this.timer = null;
|
|
|
|
if (!Components.isSuccessCode(this.request.status)) {
|
|
WARN("Request failed: " + this.url + " - " + this.request.status);
|
|
}
|
|
else if (this.request.channel instanceof Ci.nsIHttpChannel) {
|
|
try {
|
|
if (this.request.channel.requestSucceeded) {
|
|
WARN("Request failed: " + this.url + " - " +
|
|
this.request.channel.responseStatus + ": " +
|
|
this.request.channel.responseStatusText);
|
|
}
|
|
}
|
|
catch (e) {
|
|
WARN("HTTP Request failed for an unknown reason");
|
|
}
|
|
}
|
|
else {
|
|
WARN("Request failed for an unknown reason");
|
|
}
|
|
|
|
this.request = null;
|
|
|
|
this.notifyError(AddonUpdateChecker.ERROR_DOWNLOAD_ERROR);
|
|
},
|
|
|
|
/**
|
|
* Helper method to notify the observer that an error occured.
|
|
*/
|
|
notifyError: function UP_notifyError(aStatus) {
|
|
if ("onUpdateCheckError" in this.observer) {
|
|
try {
|
|
this.observer.onUpdateCheckError(aStatus);
|
|
}
|
|
catch (e) {
|
|
WARN("onUpdateCheckError notification failed", e);
|
|
}
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Called when the request has timed out and should be canceled.
|
|
*/
|
|
notify: function UP_notify(aTimer) {
|
|
this.timer = null;
|
|
this.request.abort();
|
|
this.request = null;
|
|
|
|
WARN("Request timed out");
|
|
|
|
this.notifyError(AddonUpdateChecker.ERROR_TIMEOUT);
|
|
},
|
|
|
|
/**
|
|
* Called to cancel an in-progress update check.
|
|
*/
|
|
cancel: function UP_cancel() {
|
|
this.timer.cancel();
|
|
this.timer = null;
|
|
this.request.abort();
|
|
this.request = null;
|
|
this.notifyError(AddonUpdateChecker.ERROR_CANCELLED);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Tests if an update matches a version of the application or platform
|
|
*
|
|
* @param aUpdate
|
|
* The available update
|
|
* @param aAppVersion
|
|
* The application version to use
|
|
* @param aPlatformVersion
|
|
* The platform version to use
|
|
* @param aIgnoreMaxVersion
|
|
* Ignore maxVersion when testing if an update matches. Optional.
|
|
* @param aIgnoreStrictCompat
|
|
* Ignore strictCompatibility when testing if an update matches. Optional.
|
|
* @param aCompatOverrides
|
|
* AddonCompatibilityOverride objects to match against. Optional.
|
|
* @return true if the update is compatible with the application/platform
|
|
*/
|
|
function matchesVersions(aUpdate, aAppVersion, aPlatformVersion,
|
|
aIgnoreMaxVersion, aIgnoreStrictCompat,
|
|
aCompatOverrides) {
|
|
if (aCompatOverrides) {
|
|
let override = AddonRepository.findMatchingCompatOverride(aUpdate.version,
|
|
aCompatOverrides,
|
|
aAppVersion,
|
|
aPlatformVersion);
|
|
if (override && override.type == "incompatible")
|
|
return false;
|
|
}
|
|
|
|
if (aUpdate.strictCompatibility && !aIgnoreStrictCompat)
|
|
aIgnoreMaxVersion = false;
|
|
|
|
let result = false;
|
|
for (let app of aUpdate.targetApplications) {
|
|
if (app.id == Services.appinfo.ID) {
|
|
return (Services.vc.compare(aAppVersion, app.minVersion) >= 0) &&
|
|
(aIgnoreMaxVersion || (Services.vc.compare(aAppVersion, app.maxVersion) <= 0));
|
|
}
|
|
if (app.id == TOOLKIT_ID) {
|
|
result = (Services.vc.compare(aPlatformVersion, app.minVersion) >= 0) &&
|
|
(aIgnoreMaxVersion || (Services.vc.compare(aPlatformVersion, app.maxVersion) <= 0));
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
this.AddonUpdateChecker = {
|
|
// These must be kept in sync with AddonManager
|
|
// The update check timed out
|
|
ERROR_TIMEOUT: -1,
|
|
// There was an error while downloading the update information.
|
|
ERROR_DOWNLOAD_ERROR: -2,
|
|
// The update information was malformed in some way.
|
|
ERROR_PARSE_ERROR: -3,
|
|
// The update information was not in any known format.
|
|
ERROR_UNKNOWN_FORMAT: -4,
|
|
// The update information was not correctly signed or there was an SSL error.
|
|
ERROR_SECURITY_ERROR: -5,
|
|
// The update was cancelled
|
|
ERROR_CANCELLED: -6,
|
|
|
|
/**
|
|
* Retrieves the best matching compatibility update for the application from
|
|
* a list of available update objects.
|
|
*
|
|
* @param aUpdates
|
|
* An array of update objects
|
|
* @param aVersion
|
|
* The version of the add-on to get new compatibility information for
|
|
* @param aIgnoreCompatibility
|
|
* An optional parameter to get the first compatibility update that
|
|
* is compatible with any version of the application or toolkit
|
|
* @param aAppVersion
|
|
* The version of the application or null to use the current version
|
|
* @param aPlatformVersion
|
|
* The version of the platform or null to use the current version
|
|
* @param aIgnoreMaxVersion
|
|
* Ignore maxVersion when testing if an update matches. Optional.
|
|
* @param aIgnoreStrictCompat
|
|
* Ignore strictCompatibility when testing if an update matches. Optional.
|
|
* @return an update object if one matches or null if not
|
|
*/
|
|
getCompatibilityUpdate: function AUC_getCompatibilityUpdate(aUpdates, aVersion,
|
|
aIgnoreCompatibility,
|
|
aAppVersion,
|
|
aPlatformVersion,
|
|
aIgnoreMaxVersion,
|
|
aIgnoreStrictCompat) {
|
|
if (!aAppVersion)
|
|
aAppVersion = Services.appinfo.version;
|
|
if (!aPlatformVersion)
|
|
aPlatformVersion = Services.appinfo.platformVersion;
|
|
|
|
for (let update of aUpdates) {
|
|
if (Services.vc.compare(update.version, aVersion) == 0) {
|
|
if (aIgnoreCompatibility) {
|
|
for (let targetApp of update.targetApplications) {
|
|
let id = targetApp.id;
|
|
if (id == Services.appinfo.ID || id == TOOLKIT_ID)
|
|
return update;
|
|
}
|
|
}
|
|
else if (matchesVersions(update, aAppVersion, aPlatformVersion,
|
|
aIgnoreMaxVersion, aIgnoreStrictCompat)) {
|
|
return update;
|
|
}
|
|
}
|
|
}
|
|
return null;
|
|
},
|
|
|
|
/**
|
|
* Returns the newest available update from a list of update objects.
|
|
*
|
|
* @param aUpdates
|
|
* An array of update objects
|
|
* @param aAppVersion
|
|
* The version of the application or null to use the current version
|
|
* @param aPlatformVersion
|
|
* The version of the platform or null to use the current version
|
|
* @param aIgnoreMaxVersion
|
|
* When determining compatible updates, ignore maxVersion. Optional.
|
|
* @param aIgnoreStrictCompat
|
|
* When determining compatible updates, ignore strictCompatibility. Optional.
|
|
* @param aCompatOverrides
|
|
* Array of AddonCompatibilityOverride to take into account. Optional.
|
|
* @return an update object if one matches or null if not
|
|
*/
|
|
getNewestCompatibleUpdate: function AUC_getNewestCompatibleUpdate(aUpdates,
|
|
aAppVersion,
|
|
aPlatformVersion,
|
|
aIgnoreMaxVersion,
|
|
aIgnoreStrictCompat,
|
|
aCompatOverrides) {
|
|
if (!aAppVersion)
|
|
aAppVersion = Services.appinfo.version;
|
|
if (!aPlatformVersion)
|
|
aPlatformVersion = Services.appinfo.platformVersion;
|
|
|
|
let blocklist = Cc["@mozilla.org/extensions/blocklist;1"].
|
|
getService(Ci.nsIBlocklistService);
|
|
|
|
let newest = null;
|
|
for (let update of aUpdates) {
|
|
if (!update.updateURL)
|
|
continue;
|
|
let state = blocklist.getAddonBlocklistState(update, aAppVersion, aPlatformVersion);
|
|
if (state != Ci.nsIBlocklistService.STATE_NOT_BLOCKED)
|
|
continue;
|
|
if ((newest == null || (Services.vc.compare(newest.version, update.version) < 0)) &&
|
|
matchesVersions(update, aAppVersion, aPlatformVersion,
|
|
aIgnoreMaxVersion, aIgnoreStrictCompat,
|
|
aCompatOverrides)) {
|
|
newest = update;
|
|
}
|
|
}
|
|
return newest;
|
|
},
|
|
|
|
/**
|
|
* Starts an update check.
|
|
*
|
|
* @param aId
|
|
* The ID of the add-on being checked for updates
|
|
* @param aUpdateKey
|
|
* An optional update key for the add-on
|
|
* @param aUrl
|
|
* The URL of the add-on's update manifest
|
|
* @param aObserver
|
|
* An observer to notify of results
|
|
* @return UpdateParser so that the caller can use UpdateParser.cancel() to shut
|
|
* down in-progress update requests
|
|
*/
|
|
checkForUpdates: function AUC_checkForUpdates(aId, aUpdateKey, aUrl,
|
|
aObserver) {
|
|
return new UpdateParser(aId, aUpdateKey, aUrl, aObserver);
|
|
}
|
|
};
|