wso2 - Exchange SAML Token for OAuth Token, -

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i trying exchange saml token oauth token,

saml sso config

trusted idp config

oauth config

i using code thing,

defaultbootstrap.bootstrap();          string responsemessage = (string) request.getparameter("samlresponse");         byte[] decoded = base64.decode(responsemessage);          bytearrayinputstream = new bytearrayinputstream(decoded);          documentbuilderfactory documentbuilderfactory = documentbuilderfactory.newinstance();         documentbuilderfactory.setnamespaceaware(true);         documentbuilder docbuilder = documentbuilderfactory.newdocumentbuilder();          document document = docbuilder.parse(is);         element element = document.getdocumentelement();          unmarshallerfactory unmarshallerfactory = configuration.getunmarshallerfactory();         unmarshaller unmarshaller = unmarshallerfactory.getunmarshaller(element);         xmlobject responsexmlobj = unmarshaller.unmarshall(element);          response responseobj = (response) responsexmlobj;           // saml2 assertion part response         stringwriter rspwrt = new stringwriter();         xmlhelper.writenode(responseobj.getassertions().get(0).getdom(), rspwrt);         string requestmessage = rspwrt.tostring();          // base64 encoded string of message         // prepared send on http protocol         string encodedrequestmessage = base64.encodebytes(requestmessage.getbytes(), base64.dont_break_lines);         string enc_rslt = urlencoder.encode(encodedrequestmessage, "utf-8").trim();          //create connection token endpoint of api manger         url url = new url("https://localhost:9444/oauth2/token");          httpurlconnection connection = (httpurlconnection) url.openconnection();         connection.setrequestmethod("post");         connection.setrequestproperty("content-type", "application/x-www-form-urlencoded;charset=utf-8");          string usercredentials = "xo6qrekiaaqccfjmxirlzh2ilaaa:olrwuunkr8xuedmzr1kypryv1b4a";         string basicauth = "basic " + new string(base64.encodebytes(usercredentials.getbytes()));         basicauth = basicauth.replaceall("\\r|\\n", "");          // set consumer-key , consumer-secret         connection.setrequestproperty("authorization", basicauth);         connection.setusecaches(false);         connection.setdoinput(true);         connection.setdooutput(true);          //send request         dataoutputstream wr = new dataoutputstream(connection.getoutputstream());         wr.writebytes("grant_type=urn:ietf:params:oauth:grant-type:saml2-bearer&assertion="+enc_rslt);         wr.flush();         wr.close();          //get response         inputstream iss = connection.getinputstream();         bufferedreader rd = new bufferedreader(new inputstreamreader(iss));          string line;         stringbuffer responsestring = new stringbuffer();         while((line = rd.readline()) != null) {             responsestring.append(line);             responsestring.append('\r');         }          rd.close();         system.out.println(responsestring);

but when visit application page after authentication is, got error in apim console. 

    [2014-03-23 02:06:14,456] error - oauthcallbackmanager error while calling oauthauthorization handler.  java.lang.nullpointerexception     @ org.wso2.carbon.apimgt.keymgt.util.apimanageroauthcallbackhandler.handle(apimanageroauthcallbackhandler.java:71)     @ org.wso2.carbon.identity.oauth.callback.oauthcallbackmanager.handlecallback(oauthcallbackmanager.java:42)     @ org.wso2.carbon.identity.oauth2.token.handlers.grant.abstractauthorizationgranthandler.validatescope(abstractauthorizationgranthandler.java:309)     @ org.wso2.carbon.identity.oauth2.token.accesstokenissuer.issue(accesstokenissuer.java:157)     @ org.wso2.carbon.identity.oauth2.oauth2service.issueaccesstoken(oauth2service.java:172)     @ org.wso2.carbon.identity.oauth.endpoint.token.oauth2tokenendpoint.getaccesstoken(oauth2tokenendpoint.java:227)     @ org.wso2.carbon.identity.oauth.endpoint.token.oauth2tokenendpoint.issueaccesstoken(oauth2tokenendpoint.java:108)

can solve issue?

as reference, please see: https://docs.wso2.org/display/am160/token+api

isabelle.


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