gecko/toolkit/mozapps/plugins/content/pluginInstallerDatasource.js

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2012-05-21 04:12:37 -07:00
/* 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/. */
const RDF_NS = "http://www.w3.org/1999/02/22-rdf-syntax-ns#";
const PFS_NS = "http://www.mozilla.org/2004/pfs-rdf#";
function nsRDFItemUpdater(aClientOS, aChromeLocale) {
this._rdfService = Components.classes["@mozilla.org/rdf/rdf-service;1"]
.getService(Components.interfaces.nsIRDFService);
this._os = Components.classes["@mozilla.org/observer-service;1"]
.getService(Components.interfaces.nsIObserverService);
var app = Components.classes["@mozilla.org/xre/app-info;1"]
.getService(Components.interfaces.nsIXULAppInfo);
this.appID = app.ID;
this.buildID = app.platformBuildID;
this.appRelease = app.version;
this.clientOS = aClientOS;
this.chromeLocale = aChromeLocale;
var prefBranch = Components.classes["@mozilla.org/preferences-service;1"]
.getService(Components.interfaces.nsIPrefBranch);
this.dsURI = prefBranch.getCharPref("pfs.datasource.url");
}
nsRDFItemUpdater.prototype = {
checkForPlugin: function (aPluginRequestItem) {
var dsURI = this.dsURI;
// escape the mimetype as mimetypes can contain '+', which will break pfs.
dsURI = dsURI.replace(/%PLUGIN_MIMETYPE%/g, encodeURIComponent(aPluginRequestItem.mimetype));
dsURI = dsURI.replace(/%APP_ID%/g, this.appID);
dsURI = dsURI.replace(/%APP_VERSION%/g, this.buildID);
dsURI = dsURI.replace(/%APP_RELEASE%/g, this.appRelease);
dsURI = dsURI.replace(/%CLIENT_OS%/g, this.clientOS);
dsURI = dsURI.replace(/%CHROME_LOCALE%/g, this.chromeLocale);
var ds = this._rdfService.GetDataSource(dsURI);
var rds = ds.QueryInterface(Components.interfaces.nsIRDFRemoteDataSource)
if (rds.loaded)
this.onDatasourceLoaded(ds, aPluginRequestItem);
else {
var sink = ds.QueryInterface(Components.interfaces.nsIRDFXMLSink);
sink.addXMLSinkObserver(new nsPluginXMLRDFDSObserver(this, aPluginRequestItem));
}
},
onDatasourceLoaded: function pfs_onDatasourceLoaded (aDatasource, aPluginRequestItem) {
var container = Components.classes["@mozilla.org/rdf/container;1"]
.createInstance(Components.interfaces.nsIRDFContainer);
var resultRes = this._rdfService.GetResource("urn:mozilla:plugin-results:" + aPluginRequestItem.mimetype);
var pluginList = aDatasource.GetTarget(resultRes, this._rdfService.GetResource(PFS_NS+"plugins"), true);
var pluginInfo = null;
try {
container.Init(aDatasource, pluginList);
var children = container.GetElements();
var target;
// get the first item
var child = children.getNext();
if (child instanceof Components.interfaces.nsIRDFResource) {
var name = this._rdfService.GetResource("http://www.mozilla.org/2004/pfs-rdf#updates");
target = aDatasource.GetTarget(child, name, true);
}
try {
container.Init(aDatasource, target);
target = null;
children = container.GetElements();
var child = children.getNext();
if (child instanceof Components.interfaces.nsIRDFResource) {
target = child;
}
var rdfs = this._rdfService;
function getPFSValueFromRDF(aValue) {
var rv = null;
var myTarget = aDatasource.GetTarget(target, rdfs.GetResource(PFS_NS + aValue), true);
if (myTarget)
rv = myTarget.QueryInterface(Components.interfaces.nsIRDFLiteral).Value;
return rv;
}
pluginInfo = {
name: getPFSValueFromRDF("name"),
pid: getPFSValueFromRDF("guid"),
version: getPFSValueFromRDF("version"),
IconUrl: getPFSValueFromRDF("IconUrl"),
InstallerLocation: getPFSValueFromRDF("InstallerLocation"),
InstallerHash: getPFSValueFromRDF("InstallerHash"),
XPILocation: getPFSValueFromRDF("XPILocation"),
XPIHash: getPFSValueFromRDF("XPIHash"),
InstallerShowsUI: getPFSValueFromRDF("InstallerShowsUI"),
manualInstallationURL: getPFSValueFromRDF("manualInstallationURL"),
requestedMimetype: getPFSValueFromRDF("requestedMimetype"),
licenseURL: getPFSValueFromRDF("licenseURL"),
needsRestart: getPFSValueFromRDF("needsRestart")
};
}
catch (ex) {
Components.utils.reportError(ex);
}
}
catch (ex) {
Components.utils.reportError(ex);
}
gPluginInstaller.pluginInfoReceived(aPluginRequestItem, pluginInfo);
},
onDatasourceError: function pfs_onDatasourceError (aPluginRequestItem, aError) {
this._os.notifyObservers(aPluginRequestItem, "error", aError);
Components.utils.reportError(aError);
gPluginInstaller.pluginInfoReceived(aPluginRequestItem, null);
}
};
function nsPluginXMLRDFDSObserver(aUpdater, aPluginRequestItem) {
this._updater = aUpdater;
this._item = aPluginRequestItem;
}
nsPluginXMLRDFDSObserver.prototype =
{
_updater : null,
_item : null,
// nsIRDFXMLSinkObserver
onBeginLoad: function(aSink) {},
onInterrupt: function(aSink) {},
onResume: function(aSink) {},
onEndLoad: function(aSink) {
aSink.removeXMLSinkObserver(this);
var ds = aSink.QueryInterface(Components.interfaces.nsIRDFDataSource);
this._updater.onDatasourceLoaded(ds, this._item);
},
onError: function(aSink, aStatus, aErrorMsg) {
aSink.removeXMLSinkObserver(this);
this._updater.onDatasourceError(this._item, aStatus.toString());
}
};