OpenSAML user discussion

["Paul Hethmon" <>]

Chad,

Thanks for the pointer. I'm still learning the classes and what they do.

I'm going to try and put together a tutorial type app/document in the
next month or so and I'll make that available to everyone, either on one
of my sites or thru the wiki.

Paul
 

-----Original Message-----
From: Chad La Joie 
[mailto:]
 
Sent: Thursday, January 25, 2007 11:56 AM
To: 

Subject: Re: Help starting openSAML

One minor note for you Paul, you can use the
XMLHelper.nodeToString(Node) method or writeNode(Node,Writer) to use the
DOM LS functions to write nodes to strings or writers respectively.

Thank you for the example code.

Paul Hethmon wrote:
> A couple of things here:
> 
> 1. Make sure you followed the steps to put the endorsed versions of 
> Xalan and Xerces in place.
> 2. What you do next depends on which iteration of the library you are 
> using. I'm using the latest revision from svn (at least updated in the

> last week) and here's some sample code which should compile and run:
> 
> // -----
>     org.opensaml.DefaultBootstrap.bootstrap();
> 
>     // Use the OpenSAML Configuration singleton to get a builder 
> factory object
>     XMLObjectBuilderFactory builderFactory = 
> org.opensaml.Configuration.getBuilderFactory();
>     // First get a builder for AuthnRequest
>     AuthnRequestBuilder arb = (AuthnRequestBuilder) 
> builderFactory.getBuilder(AuthnRequest.DEFAULT_ELEMENT_NAME);
>     // And one for Issuer
>     IssuerBuilder ib = (IssuerBuilder) 
> builderFactory.getBuilder(Issuer.DEFAULT_ELEMENT_NAME);
>     // And one for Subject
>     SubjectBuilder sb = (SubjectBuilder) 
> builderFactory.getBuilder(Subject.DEFAULT_ELEMENT_NAME);
>     // build an AuthnRequest object
>     AuthnRequestImpl auth = (AuthnRequestImpl) arb.buildObject();
>     // Build the Issuer object
>     Issuer newIssuer = ib.buildObject();
>     newIssuer.setValue("MyIssuer");
>     auth.setIssuer(newIssuer);
>     auth.setProviderName("MyProviderName");
>     auth.setAssertionConsumerServiceURL("http://www.example.com";);
>     auth.setDestination("http://www.example.com";);
>     //auth.setAssertionConsumerServiceIndex(0);
>     //auth.setAttributeConsumingServiceIndex(0);
>     auth.setID("someuniqueidhere");
>     auth.setVersion(org.opensaml.common.SAMLVersion.VERSION_20);
>     DateTime dt = new DateTime();
>     auth.setIssueInstant(dt);
>     
>     
>     MarshallerFactory marshallerFactory = 
> org.opensaml.Configuration.getMarshallerFactory();
>     
>     Marshaller marshaller = marshallerFactory.getMarshaller(auth);
>     
>     String msg = "";
>     Element authElement = null;
>     if (marshaller == null) {
>       msg = "unable to locate marshaller for [" +
> newIssuer.getElementQName() + "]";
>     } else {
>       authElement = marshaller.marshall(auth);
>     }
>     
>   DOMImplementationRegistry registry = 
> DOMImplementationRegistry.newInstance();
> 
>   DOMImplementationLS impl =
> (DOMImplementationLS)registry.getDOMImplementation("LS");
> 
>   LSSerializer writer = impl.createLSSerializer();
>   String str = writer.writeToString(authElement);
>   str = str.replace("<", "&lt;");
>   str = str.replace(">", "&gt;");
> // -----
> 
> It's not the greatest or prettiest, but it's something you can start 
> with.
> 
> Paul
> 
> 
> 
> -----Original Message-----
> From: Subash Devkota 
> [mailto:]
> Sent: Thursday, January 25, 2007 7:59 AM
> To: 
> 
> Subject: Help starting openSAML
> 
> Hi all,
> 
> I want to test and implement  openSAML API. I have got the jar and
code.
> 
> But, I am getting problem how to start using it. I could not find any 
> good tutorial or example for simply creating  SAML objects and writing

> to xml.
> 
> I found one example code from
> https://spaces.internet2.edu/display/SHIB/OSTwoUsrManJavaCreateFromScr
> at
> ch
> but got error using it.
> 
>> public static void main(String args[]) throws Exception{
>>       
>> //             Get the builder factory
>>           XMLObjectBuilderFactory builderFactory = 
>> Configuration.getBuilderFactory();
>>           
>>           // Get the subject builder based on the subject element
name
>>           SubjectBuilder builder = (SubjectBuilder ) 
>> builderFactory.getBuilder(Subject.DEFAULT_ELEMENT_NAME);
>>           
>>           System.out.println("subject builder is :"+builder);
>>           // Create the subject
>>           Subject subject = (Subject)builder.buildObject();
> I got builder value in second step as null and get 
> NullPointerException in third step as shown below:
> 
>> subject builder is :null
>> Exception in thread "main" java.lang.NullPointerException
> 
> Can any one help me how to do it. Also, I would be grateful if anyone 
> can show me the best example or tutorial for getting started with 
> openSAML.
> 
> Thanks in advance
> Subash
>  
>  
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-- 
Chad La Joie             2052-C Harris Bldg
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