gadgets.io.makeRequest (OAuth Signing Mechanism) - URGENT

[Raj]

Hi,

I need to authenticate the user before accessing the application.
Below is the code which i have used, Im getting
"net.oauth.OAuthProblemException: signature_invalid"
exception.

Server side code is in java.

Any help greatly appreciated.

Thanks in advance.
Raj

Gadget XML code:

<?xml version="1.0" encoding="UTF-8"?><Module><ModulePrefs title="make
request........" description="................."><Require
feature="opensocial-0.7"/><Require feature="dynamic-height"/></
ModulePrefs><Content type="html"><![CDATA[<script>function onLoad()
{var params={};params[gadgets.io.RequestParameters.AUTHORIZATION] =
gadgets.io.AuthorizationType.SIGNED;
params[gadgets.io.RequestParameters.METHOD] =
gadgets.io.MethodType.GET;
params[gadgets.io.RequestParameters.CONTENT_TYPE] =
gadgets.io.ContentType.TEXT;gadgets.io.makeRequest('http://<domain
name>/authenticate.do', function(response)
{ if(response.errors) { //shows: Errors:
Error 404 alert("Errors:" + response.errors
+"=="+response.data+"http://<domain name>/
authenticate.do"); } else { var
data = response.data; // do stuff } },
params); };function authResponse(data){for(var i in data){alert(i
+'='+data[i]);}};onLoad();</script><div id="content_div">Loading...</
div>]]></Content></Module>

Server code:
package com.orkut.pl.action.hiqOrkut;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import net.oauth.OAuthAccessor;
import net.oauth.OAuthConsumer;
import net.oauth.OAuthMessage;
import net.oauth.OAuthServiceProvider;
import net.oauth.server.OAuthServlet;
import net.oauth.signature.RSA_SHA1;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

public class AuthenticateAction extends Action {

private static final String certificate =
"-----BEGIN CERTIFICATE-----\n"

+"MIIDHDCCAoWgAwIBAgIJAMbTCksqLiWeMA0GCSqGSIb3DQEBBQUAMGgxCzAJBgNV
\n"

+"BAYTAlVTMQswCQYDVQQIEwJDQTEWMBQGA1UEBxMNTW91bnRhaW4gVmlldzEUMBIG
\n"

+"A1UEChMLR29vZ2xlIEluYy4xDjAMBgNVBAsTBU9ya3V0MQ4wDAYDVQQDEwVscnlh
\n"

+"bjAeFw0wODAxMDgxOTE1MjdaFw0wOTAxMDcxOTE1MjdaMGgxCzAJBgNVBAYTAlVT
\n"

+"MQswCQYDVQQIEwJDQTEWMBQGA1UEBxMNTW91bnRhaW4gVmlldzEUMBIGA1UEChML
\n"

+"R29vZ2xlIEluYy4xDjAMBgNVBAsTBU9ya3V0MQ4wDAYDVQQDEwVscnlhbjCBnzAN
\n"

+"BgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEAseBXZ4NDhm24nX3sJRiZJhvy9eDZX12G
\n"
+"j4HWAMmhAcnm2iBgYpAigwhVHtOs+ZIUIdzQHvHeNd0ydc1Jg8e+C
+Mlzo38OvaG
\n"
+"D3qwvzJ0LNn7L80c0XVrvEALdD9zrO
+0XSZpTK9PJrl2W59lZlJFUk3pV+jFR8NY
\n"
+"eB/fto7AVtECAwEAAaOBzTCByjAdBgNVHQ4EFgQUv7TZGZaI
+FifzjpTVjtPHSvb
\n"
+"XqUwgZoGA1UdIwSBkjCBj4AUv7TZGZaI
+FifzjpTVjtPHSvbXqWhbKRqMGgxCzAJ
\n"

+"BgNVBAYTAlVTMQswCQYDVQQIEwJDQTEWMBQGA1UEBxMNTW91bnRhaW4gVmlldzEU
\n"

+"MBIGA1UEChMLR29vZ2xlIEluYy4xDjAMBgNVBAsTBU9ya3V0MQ4wDAYDVQQDEwVs
\n"

+"cnlhboIJAMbTCksqLiWeMAwGA1UdEwQFMAMBAf8wDQYJKoZIhvcNAQEFBQADgYEA
\n"
+"CETnhlEnCJVDXoEtSSwUBLP/
147sqiu9a4TNqchTHJObwTwDPUMaU6XIs2OTMmFu
\n"

+"GeIYpkHXzTa9Q6IKlc7Bt2xkSeY3siRWCxvZekMxPvv7YTcnaVlZzHrVfAzqNsTG
\n"
+"P3J//C0j+8JWg6G+zuo5k7pNRKDY76GxxHPYamdLfwk=\n"
+"-----END CERTIFICATE-----";

/* "-----BEGIN CERTIFICATE-----\n"
+ "MIIBpjCCAQ
+gAwIBAgIBATANBgkqhkiG9w0BAQUFADAZMRcwFQYDVQQDDA5UZXN0\n"
+
"IFByaW5jaXBhbDAeFw03MDAxMDEwODAwMDBaFw0zODEyMzEwODAwMDBaMBkxFzAV\n"
+
"BgNVBAMMDlRlc3QgUHJpbmNpcGFsMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKB\n"
+ "gQC0YjCwIfYoprq/
FQO6lb3asXrxLlJFuCvtinTF5p0GxvQGu5O3gYytUvtC2JlY\n"
+ "zypSRjVxwxrsuRcP3e641SdASwfrmzyvIgP08N4S0IFzEURkV1wp/
IpH7kH41Etb\n"
+ "mUmrXSwfNZsnQRE5SYSOhh
+LcK2wyQkdgcMv11l4KoBkcwIDAQABMA0GCSqGSIb3\n"
+ "DQEBBQUAA4GBAGZLPEuJ5SiJ2ryq+CmEGOXfvlTtEL2nuGtr9PewxkgnOjZpUy
+d\n"
+ "4TvuXJbNQc8f4AMWL/tO9w0Fk80rWKp9ea8/
df4qMq5qlFWlx6yOLQxumNOmECKb\n"
+ "WpkUQDIDJEoFUzKMVuJf4KO/FJ345+BNLGgbJ6WujreoM1X/gYfdnJ/J\n"
+ "-----END CERTIFICATE-----";*/

public ActionForward execute(ActionMapping mapping, ActionForm
form,
HttpServletRequest request,
HttpServletResponse response)
throws Exception
{
String target="success";
try {
System.out.println("in authenticate action
class*********************");
OAuthServiceProvider provider = new
OAuthServiceProvider(null,
null,null);
System.out.println("print provider
==="+provider);
OAuthConsumer consumer = new
OAuthConsumer(null, "orkut.com",
null,provider);
System.out.println("print
cosumer==="+consumer);

consumer.setProperty(RSA_SHA1.X509_CERTIFICATE, certificate);
OAuthMessage message =
OAuthServlet.getMessage(request, null);
System.out.println("print
message=="+message);
OAuthAccessor accessor = new
OAuthAccessor(consumer);
message.validateSignature(accessor);
System.out.println("in authenticate action
class*********************");
// return true;
} catch (Exception e) {
//not signed or some other issue.
System.out.println("exception in
authenticate==="+e);
e.printStackTrace();
target="failure";

}

return (mapping.findForward(target));
}