Hi i am trying to implement OAuth1.0 following this tutorial in this tutorial there is a heading OAuthGetRequestToken
in which for getting request token we have to send a post request to URL
www.google.com/accounts/OAuthGetRequestToken
i am sending a post request in my code in google app engine my code is:
package org.ritesh;
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.security.KeyFactory;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.spec.EncodedKeySpec;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.PKCS8EncodedKeySpec;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;
import com.google.gdata.client.authn.oauth.*;
import com.google.gdata.util.common.util.Base64;
import com.google.gdata.util.common.util.Base64DecoderException;
import com.sun.org.apache.xerces.internal.util.URI;
import javax.servlet.ServletContext;
import javax.servlet.http.*;
@SuppressWarnings("serial")
public class HelloWorldServlet extends HttpServlet {
@SuppressWarnings({ "unchecked", "unchecked" })
public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws IOException {
String myrsakey= "MIICdwIBADANBgkqhkiG9w0BAQEFAASCAmEwggJdAgEAAoGBALwVoQ3Ksd9gwZY3"
+"a7Flz5bf1oCiYe8XSn6vlkaPiA0jBcPJAmACjI023/Z+8KgDbyhlRumTtcateXNZ"
+"FVb7q/BKTQWgxK1Fj2XGUkWQz6Nsp/sk54M+R4n3XkTp6W7HhFERE81Iobgy+KtM"
+"vr5f/tJbCtLspKSaq2totveKMvMDAgMBAAECgYBIeTke3FzfyyOtI1vO9oEgDM5V"
+"sLx16Y6d9EC+na36CeW9xGWy4yiPfXadP9qxkukxMp05gd5IWS30QX5UjxN4ER9j"
+"tEDCfDePnrOoi6aUpLXuHoOQbhVIBMTEsFzw9v837a2GOnU0YMgUnGTzC8Ql/3Aw"
+"kFPNFqVEG57ItzZYGQJBAO8K8qXiDfUeMUjGLwqbRk5NgM7GVlPI80f3/V2o7EtP"
+"T6kr6nvob7ZfgQ9R1STuIPjF+0GartfHZ5x+7tdcZ7cCQQDJbUV6Y41zzQ/Pg/cl"
+"VIbZ8Lx9GdtYBaDFeIhGHXDq7Q0I17ztMILJfvx5kKQWGix8ktb0COGX7LxKIwFu"
+"GxcVAkEAhoDWf9humhnfCV/aYFF2geDCNZcMRCCyIzC689R1APsji8EWM5paIXgj"
+"moclM556FwDvm7552xhsiHYz1iI8iQJANcCMRvHkIJ/7dSRBQtwAtI4yrqvExgOS"
+"eMAGlbdrl7W0wcRYrW9Bp6XUmFhKAX/wmTnSVQM9uH47bQlUa16dVQJBAKnnjcgW"
+"AmoCYM+YYmi6+fytPYn9W61RNdl1f9rtccDBhsWomgS6O204qJoLX+U/aCkjpPxK"
+"IyilkfsZBNupdzA=";
resp.setContentType("text/html");
resp.getWriter().println("<html><head> <meta name=\"google-site-verification\" content=\"OBFeK6hFEbTkNdcYc-SQNH9tCTpcht-HkUdj6IgCaLg\" </head>");
resp.getWriter().println("<body>Hello, world");
TreeMap<String,String> tree=new TreeMap<String,String>();
tree.put("oauth_version","1.0");
tree.put("oauth_nonce", System.currentTimeMillis()+"");
tree.put("oauth_timestamp",System.currentTimeMillis()/1000+"");
tree.put("oauth_consumer_key", "imehandirattaritesh.appspot.com");
tree.put("oauth_signature_method", "RSA-SHA1");
tree.put("oauth_signature", myrsakey);
tree.put("oauth_callback", "https://imehandirattaritesh.appspot.com/authsub");
tree.put("scope", "http://www.google.com/calendar/feeds");
Set set = tree.entrySet();
Iterator<Map.Entry<String, String>> i = set.iterator();
String datastring="";
Map.Entry me=(Map.Entry)i.next();
datastring=me.getKey()+"=";
datastring+=me.getValue();
while(i.hasNext()) {
me = (Map.Entry)i.next();
datastring+="&"+me.getKey()+"=";
datastring+=(me.getValue());
}
URL url=new URL("https://www.google.com/accounts/OAuthGetRequestToken?"+datastring);
resp.getWriter().println(""+datastring);
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
urlConnection.setRequestProperty("Authorization", "OAuth");
urlConnection.setRequestMethod("POST");
urlConnection.setDoOutput(true);
BufferedReader in = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
resp.getWriter().println( urlConnection.getResponseCode());
String xx="";
String xx1="";
while((xx1=in.readLine()) != null)
{
xx+=xx1;
}
resp.getWriter().println(xx);
resp.getWriter().println("</body></html>");
}
}
i am hosting my app on domain imehandirattaritesh.appspot.com and i think probably i am putting all my parameters correct.may be in tutorial link signature is a very small string but in my case it is a very big string i am putting the content of my .pk8 file which is generated from certificate .pem file .i am expecting my input as like this
oauth_token=ab3cd9j4ks73hf7g&oauth_token_secret=ZXhhbXBsZS5jb20&oauth_callback_confirmed=true
but in place of this i am getting response of sending post request as
signature_invalidbase_string:POST&https%3A%2F%2Fwww.google.com%2Faccounts%2FOAuthGetRequestToken&oauth_callback%3Dhttps%253A%252F%252Fimehandirattaritesh.appspot.com%252Fauthsub%26oauth_consumer_key%3Dimehandirattaritesh.appspot.com%26oauth_nonce%3D1357733037248%26oauth_signature_method%3DRSA-SHA1%26oauth_timestamp%3D1357733037%26oauth_version%3D1.0%26scope%3Dhttp%253A%252F%252Fwww.google.com%252Fcalendar%252Ffeeds
my oauth_callback is https://imehandirattaritesh.appspot.com/authsub
i am trying to remove this error like hell but failed every time can any one please help how to remove this error or resource or link from which i will get any help.please dont suggest me using java client for OAuth1.0 .i have to use google prediction api and call then from my application and in java client library there is no functionality related to calling google prediction api.please help me how to remove this error and get right output
