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/* SAMLAttributeQuery.cpp - SAML attribute query implementation

   Scott Cantor
   5/21/02

   $History:$
*/

#include "internal.h"

using namespace saml;
using namespace std;


SAMLAttributeQuery::SAMLAttributeQuery(SAMLSubject* subject, const XMLCh* resource, const Iterator<SAMLAttribute*>& designators)
{
    RTTI(SAMLAttributeQuery);
    if (!subject)
        throw SAMLException(SAMLException::REQUESTER,"SAMLAttributeQuery() requires subject");
    m_subject=subject;
    m_resource=XMLString::replicate(resource);
    while (designators.hasNext())
        m_designators.push_back(designators.next());
}

SAMLAttributeQuery::SAMLAttributeQuery(DOMElement* e) : m_subject(NULL), m_resource(NULL)
{
    RTTI(SAMLAttributeQuery);
    fromDOM(e);
}

SAMLAttributeQuery::SAMLAttributeQuery(istream& in) : SAMLQuery(in), m_subject(NULL), m_resource(NULL)
{
    RTTI(SAMLAttributeQuery);
    fromDOM(m_document->getDocumentElement());
}

SAMLAttributeQuery::~SAMLAttributeQuery()
{
    if (m_bOwnStrings)
        delete[] const_cast<XMLCh*>(m_resource);
    delete m_subject;
    for (vector<SAMLAttribute*>::const_iterator i=m_designators.begin(); i!=m_designators.end(); i++)
        delete (*i);
}

SAMLObject* SAMLAttributeQuery::clone() const
{
    return new SAMLAttributeQuery(static_cast<SAMLSubject*>(m_subject->clone()),m_resource,getDesignators().clone());
}

void SAMLAttributeQuery::fromDOM(DOMElement* e)
{
    saml::NDC ndc("fromDOM");
    SAMLObject::fromDOM(e);

    if (SAMLConfig::getConfig().strict_dom_checking)
    {
        if (XMLString::compareString(XML::SAMLP_NS,e->getNamespaceURI()))
            throw MalformedException(SAMLException::REQUESTER,"SAMLAttributeQuery::fromDOM() root element isn't in samlp namespace");
        if (XMLString::compareString(L(AttributeQuery),e->getLocalName()))
        {
            auto_ptr<saml::QName> type(saml::QName::getQNameAttribute(e,XML::XSI_NS,L(type)));
            if ((XMLString::compareString(L(Query),e->getLocalName()) && XMLString::compareString(L(SubjectQuery),e->getLocalName())) ||
                    !type.get() || XMLString::compareString(XML::SAMLP_NS,type->getNamespaceURI()) ||
                    XMLString::compareString(L(AttributeQueryType),type->getLocalName()))
                throw MalformedException(SAMLException::REQUESTER,"SAMLAttributeQuery::fromDOM() missing samlp:AttributeQuery element at root");
        }
    }

    m_root=e;
    m_bOwnStrings=false;

    m_resource = e->getAttributeNS(NULL,L(Resource));

    DOMNodeList* nlist = e->getElementsByTagNameNS(XML::SAML_NS,L(AttributeDesignator));
    for (int i=0; nlist && i<nlist->getLength(); i++)
        m_designators.push_back(new SAMLAttribute((DOMElement*)nlist->item(i)));
}

DOMNode* SAMLAttributeQuery::toDOM(DOMDocument* doc, bool xmlns) const
{
    SAMLObject::toDOM(doc,xmlns);
    if (m_root)
    {
        if (xmlns)
            static_cast<DOMElement*>(m_root)->setAttributeNS(XML::XMLNS_NS,L(xmlns),XML::SAMLP_NS);
        return m_root;
    }
    if (!doc)
        doc=m_document;
    // Construct an AttributeQuery.
    DOMElement* q=doc->createElementNS(XML::SAMLP_NS,L(AttributeQuery));
    if (xmlns)
        q->setAttributeNS(XML::XMLNS_NS,L(xmlns),XML::SAMLP_NS);
    if (m_resource && *m_resource)
        q->setAttributeNS(NULL,L(Resource),m_resource);

    q->appendChild(m_subject->toDOM(doc));

    for (vector<SAMLAttribute*>::const_iterator i=m_designators.begin(); i!=m_designators.end(); i++)
    {
        DOMElement* desig = doc->createElementNS(XML::SAML_NS,L(AttributeDesignator));
        desig->setAttributeNS(XML::XMLNS_NS,L(xmlns),XML::SAML_NS);
        desig->setAttributeNS(NULL,L(AttributeName),(*i)->getName());
        desig->setAttributeNS(NULL,L(AttributeNamespace),(*i)->getNamespace());
        q->appendChild(desig);
    }

    return m_root=q;
}