X-Git-Url: http://www.project-moonshot.org/gitweb/?a=blobdiff_plain;f=util_saml.cpp;h=b859d9b91f8479c6c07bf817e281790fb5bc5adc;hb=81378d116795fa8a7a56dc8e00c3b2666126682d;hp=dcd7ae315ee9d9d400af406aeed2c6a62da9d2b6;hpb=5897d9020b79c771072b3fd397f2e274aacf9537;p=mech_eap.git

diff --git a/util_saml.cpp b/util_saml.cpp
index dcd7ae3..b859d9b 100644
--- a/util_saml.cpp
+++ b/util_saml.cpp
@@ -29,403 +29,394 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
-/*
- * Copyright 2001-2009 Internet2
- * 
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
 
-#include <gssapi/gssapi.h>
-#include <gssapi/gssapi_ext.h>
-#include "util.h"
-
-#include <shibsp/Application.h>
-#include <shibsp/exceptions.h>
-#include <shibsp/SPConfig.h>
-#include <shibsp/ServiceProvider.h>
-#include <shibsp/attribute/Attribute.h>
-#include <shibsp/attribute/resolver/ResolutionContext.h>
-#include <shibsp/handler/AssertionConsumerService.h>
-#include <shibsp/metadata/MetadataProviderCriteria.h>
-#include <shibsp/util/SPConstants.h>
-
-#include <saml/saml1/core/Assertions.h>
-#include <saml/saml2/core/Assertions.h>
-#include <saml/saml2/metadata/Metadata.h>
+#include "gssapiP_eap.h"
+
+#include <sstream>
+
 #include <xercesc/util/XMLUniDefs.hpp>
-#include <xmltooling/XMLToolingConfig.h>
+#include <xmltooling/XMLToolingConfig.h> 
 #include <xmltooling/util/XMLHelper.h>
 
-using namespace shibsp;
+#include <saml/saml1/core/Assertions.h> 
+#include <saml/saml2/core/Assertions.h>
+#include <saml/saml2/metadata/Metadata.h>
+
+using namespace xmltooling;
 using namespace opensaml::saml2md;
 using namespace opensaml;
-using namespace xmltooling::logging;
-using namespace xmltooling;
 using namespace xercesc;
 using namespace std;
 
-class GSSEAPResolver : public shibsp::AssertionConsumerService
+class auto_ptr_gss_buffer {
+    MAKE_NONCOPYABLE(auto_ptr_gss_buffer);
+    public:
+        auto_ptr_gss_buffer() : m_buf(NULL) {
+        }
+        auto_ptr_gss_buffer(const gss_buffer_t src) {
+            m_buf = new XMLCh[src->length + 1];
+            XMLString::transcode((const char *)src->value, m_buf, src->length);
+        }
+        ~auto_ptr_gss_buffer() {
+            xercesc::XMLString::release(&m_buf);
+        }
+        const XMLCh* get() const {
+            return m_buf;
+        }
+        XMLCh* release() {
+            XMLCh *temp = m_buf; m_buf = NULL; return temp;
+        }
+    private:
+        XMLCh *m_buf;
+};
+
+/*
+ * gss_eap_saml_assertion_provider is for retrieving the underlying
+ * assertion.
+ */
+gss_eap_saml_assertion_provider::gss_eap_saml_assertion_provider(const gss_eap_attr_ctx *ctx,
+                                                                 gss_cred_id_t gssCred,
+                                                                 gss_ctx_id_t gssCtx)
+    : gss_eap_attr_provider(ctx, gssCred, gssCtx)
 {
-public:
-    GSSEAPResolver(const DOMElement *e, const char *appId)
-        : shibsp::AssertionConsumerService(e, appId, Category::getInstance(SHIBSP_LOGCAT".GSSEAPResolver")) {
-    }
-    virtual ~GSSEAPResolver() {}
-
-    ResolutionContext* resolveAttributes (
-        const Application& application,
-        const RoleDescriptor* issuer,
-        const XMLCh* protocol,
-        const saml1::NameIdentifier* v1nameid,
-        const saml2::NameID* nameid,
-        const XMLCh* authncontext_class,
-        const XMLCh* authncontext_decl,
-        const vector<const Assertion*>* tokens
-        ) const {
-            return shibsp::AssertionConsumerService::resolveAttributes(
-                    application, issuer, protocol, v1nameid,
-                    nameid, authncontext_class, authncontext_decl, tokens
-            );
+    if (gssCtx == GSS_C_NO_CONTEXT) {
+        /* Then we are creating from an existing attribute context */
+        gss_eap_saml_assertion_provider *saml;
+
+        saml = dynamic_cast<gss_eap_saml_assertion_provider *>
+            (ctx->getProvider(ATTR_TYPE_SAML_ASSERTION));
+        if (saml != NULL)
+            setAssertion(saml->getAssertion());
+    } else { 
+        gss_eap_radius_attr_provider *radius;
+        gss_buffer_desc value = GSS_C_EMPTY_BUFFER;
+        int authenticated, complete, more = -1;
+        OM_uint32 minor;
+
+        radius = dynamic_cast<gss_eap_radius_attr_provider *>
+            (ctx->getProvider(ATTR_TYPE_RADIUS));
+        if (radius != NULL &&
+            radius->getAttribute(512, &authenticated, &complete,
+                                 &value, NULL, &more)) {
+            m_assertion = parseAssertion(&value);
+            gss_release_buffer(&minor, &value);
+        }
     }
+}
 
-private:
-    void implementProtocol(
-        const Application& application,
-        const HTTPRequest& httpRequest,
-        HTTPResponse& httpResponse,
-        SecurityPolicy& policy,
-        const PropertySet* settings,
-        const XMLObject& xmlObject
-        ) const {
-            throw FatalProfileException("Should never be called.");
-    }
-};
+gss_eap_saml_assertion_provider::~gss_eap_saml_assertion_provider(void)
+{
+    delete m_assertion;
+}
 
-class SHIBSP_DLLLOCAL DummyContext : public ResolutionContext
+void
+gss_eap_saml_assertion_provider::setAssertion(const saml2::Assertion *assertion)
 {
-public:
-    DummyContext(const vector<Attribute*>& attributes) : m_attributes(attributes) {
-    }
 
-    virtual ~DummyContext() {
-        for_each(m_attributes.begin(), m_attributes.end(), xmltooling::cleanup<Attribute>());
-    }
+    delete m_assertion;
+    m_assertion = dynamic_cast<saml2::Assertion*>(assertion->clone());
+}
 
-    vector<Attribute*>& getResolvedAttributes() {
-        return m_attributes;
-    }
-    vector<Assertion*>& getResolvedAssertions() {
-        return m_tokens;
-    }
+saml2::Assertion *
+gss_eap_saml_assertion_provider::parseAssertion(const gss_buffer_t buffer)
+{
+    string str((char *)buffer->value, buffer->length);
+    istringstream istream(str);
+    DOMDocument *doc;
+    const XMLObjectBuilder *b;
 
-private:
-    vector<Attribute*> m_attributes;
-    static vector<Assertion*> m_tokens; // never any tokens, so just share an empty vector
-};
+    doc = XMLToolingConfig::getConfig().getParser().parse(istream);
+    b = XMLObjectBuilder::getBuilder(doc->getDocumentElement());
 
-struct eap_gss_saml_attr_ctx {
-    ResolutionContext *resCtx;
-    gss_buffer_desc assertion;
-};
+    return dynamic_cast<saml2::Assertion *>(b->buildFromDocument(doc));
+}
 
-static OM_uint32
-samlAllocAttrContext(OM_uint32 *minor,
-                     struct eap_gss_saml_attr_ctx **pCtx)
+bool
+gss_eap_saml_assertion_provider::getAttributeTypes(gss_eap_attr_enumeration_cb addAttribute, void *data) const
 {
-    struct eap_gss_saml_attr_ctx *ctx;
+    addAttribute(this, GSS_C_NO_BUFFER, data);
+}
 
-    ctx = (struct eap_gss_saml_attr_ctx *)GSSEAP_CALLOC(1, sizeof(*ctx));
-    if (ctx == NULL) {
-        *minor = ENOMEM;
-        return GSS_S_FAILURE;
-    }
+void
+gss_eap_saml_assertion_provider::setAttribute(int complete,
+                                              const gss_buffer_t attr,
+                                              const gss_buffer_t value)
+{
+    saml2::Assertion *assertion = parseAssertion(value);
 
-    *pCtx = ctx;
-    *minor = 0;
-    return GSS_S_COMPLETE;
+    m_assertion = assertion;
 }
 
-static OM_uint32
-samlImportAssertion(OM_uint32 *minor,
-                    gss_buffer_t buffer,
-                    saml2::Assertion **pAssertion)
+void
+gss_eap_saml_assertion_provider::deleteAttribute(const gss_buffer_t value)
 {
-    *pAssertion = NULL;
-
-    try {
-        DOMDocument *doc;
-        const XMLObjectBuilder *b;
-        DOMElement *elem;
-        XMLObject *xobj;
-        string samlBuf((char *)buffer->value, buffer->length);
-        istringstream samlIn(samlBuf);
-
-        doc = XMLToolingConfig::getConfig().getParser().parse(samlIn);
-        b = XMLObjectBuilder::getDefaultBuilder();
-        elem = doc->getDocumentElement();
-        xobj = b->buildOneFromElement(elem, true);
-
-        *pAssertion = dynamic_cast<saml2::Assertion *>(xobj);
-        if (*pAssertion == NULL) {
-            /* TODO minor_status */
-            return GSS_S_BAD_NAME;
-        }
-    } catch (exception &e){
-        /* TODO minor_status */
-        return GSS_S_BAD_NAME;
+    delete m_assertion;
+    m_assertion = NULL;
+}
+
+bool
+gss_eap_saml_assertion_provider::getAttribute(const gss_buffer_t attr,
+                                              int *authenticated,
+                                              int *complete,
+                                              gss_buffer_t value,
+                                              gss_buffer_t display_value,
+                                              int *more) const
+{
+    string str;
+
+    if (attr->length != 0 || m_assertion == NULL)
+        return false;
+
+    if (*more == -1)
+        *more = 0;
+
+    if (*more == 0) {
+        *authenticated = true;
+        *complete = false;
+
+        XMLHelper::serialize(m_assertion->marshall((DOMDocument *)NULL), str);
+
+        duplicateBuffer(str, value);
     }
 
-    *minor = 0;
-    return GSS_S_COMPLETE;
+    return true;
+}
+
+gss_any_t
+gss_eap_saml_assertion_provider::mapToAny(int authenticated,
+                                          gss_buffer_t type_id) const
+{
+    return (gss_any_t)m_assertion;
+}
+
+void
+gss_eap_saml_assertion_provider::releaseAnyNameMapping(gss_buffer_t type_id,
+                                                       gss_any_t input) const
+{
+    delete ((saml2::Assertion *)input);
 }
 
-OM_uint32
-samlDuplicateAttrContext(OM_uint32 *minor,
-                         const struct eap_gss_saml_attr_ctx *in,
-                         struct eap_gss_saml_attr_ctx **out)
+void
+gss_eap_saml_assertion_provider::marshall(gss_buffer_t buffer) const
 {
-    OM_uint32 major, tmpMinor;
-    struct eap_gss_saml_attr_ctx *ctx;
+    ostringstream sink;
+    string str;
 
-    major = samlAllocAttrContext(minor, &ctx);
-    if (GSS_ERROR(major))
-        goto cleanup;
+    buffer->length = 0;
+    buffer->value = NULL;
 
-    ctx->resCtx = new DummyContext(in->resCtx->getResolvedAttributes());
+    if (m_assertion == NULL)
+        return;
 
-cleanup:
-    if (GSS_ERROR(major))
-        samlReleaseAttrContext(&tmpMinor, &ctx);
+    sink << *m_assertion;
+    str = sink.str();
 
-    return major;
+    duplicateBuffer(str, buffer);
 }
 
-OM_uint32
-samlReleaseAttrContext(OM_uint32 *minor,
-                       struct eap_gss_saml_attr_ctx **pCtx)
+gss_eap_attr_provider *
+gss_eap_saml_assertion_provider::unmarshall(const gss_eap_attr_ctx *ctx,
+                                            const gss_buffer_t buffer)
 {
-    struct eap_gss_saml_attr_ctx *ctx = *pCtx;
-
-    if (ctx != NULL) {
-        delete ctx->resCtx;
-        GSSEAP_FREE(ctx);
-        *pCtx = NULL;
-    }
+   return new gss_eap_saml_assertion_provider(ctx, buffer);
+}
 
-    *minor = 0;
-    return GSS_S_COMPLETE;
+bool
+gss_eap_saml_assertion_provider::init(void)
+{
 }
 
-OM_uint32
-samlCreateAttrContext(OM_uint32 *minor,
-                      gss_buffer_t buffer,
-                      gss_name_t acceptorName,
-                      struct eap_gss_saml_attr_ctx **pCtx)
+void
+gss_eap_saml_assertion_provider::finalize(void)
 {
-    OM_uint32 major, tmpMinor;
-    struct eap_gss_saml_attr_ctx *ctx;
-    SPConfig &conf = SPConfig::getConfig();
-    ServiceProvider *sp;
-    const Application *app;
-    MetadataProvider *m;
-    gss_buffer_desc nameBuf;
-    const XMLCh *issuer = NULL;
-    saml2::NameID *subjectName = NULL;
-    saml2::Assertion *assertion;
-
-    nameBuf.length = 0;
-    nameBuf.value = NULL;
-
-    conf.setFeatures(SPConfig::Metadata             |
-                     SPConfig::Trust                |
-                     SPConfig::AttributeResolution  |
-                     SPConfig::Credentials          |
-                     SPConfig::OutOfProcess);
-    if (!conf.init())
-        return GSS_S_FAILURE;
-    if (!conf.instantiate())
-        return GSS_S_FAILURE;
-
-    sp = conf.getServiceProvider();
-    sp->lock();
-
-    major = gss_display_name(minor, acceptorName, &nameBuf, NULL);
-    if (GSS_ERROR(major))
-        goto cleanup;
-
-    app = sp->getApplication((const char *)nameBuf.value);
-    if (app == NULL) {
-        major = GSS_S_FAILURE;
-        goto cleanup;
-    }
+}
 
-    major = samlAllocAttrContext(minor, &ctx);
-    if (GSS_ERROR(major))
-        goto cleanup;
-
-    major = samlImportAssertion(minor, buffer, &assertion);
-    if (GSS_ERROR(major))
-        goto cleanup;
-
-    if (assertion->getIssuer() != NULL)
-        issuer = assertion->getIssuer()->getName();
-    if (assertion->getSubject() != NULL)
-        subjectName = assertion->getSubject()->getNameID();
-
-    try {
-        m = app->getMetadataProvider();
-        xmltooling::Locker mlocker(m);
-        MetadataProviderCriteria mc(*app, issuer,
-                                    &IDPSSODescriptor::ELEMENT_QNAME,
-                                    samlconstants::SAML20P_NS);
-        pair<const EntityDescriptor *, const RoleDescriptor *> site =
-            m->getEntityDescriptor(mc);
-        if (!site.first) {
-            auto_ptr_char temp(issuer);
-            throw MetadataException("Unable to locate metadata for IdP ($1).",
-                                    params(1,temp.get()));
-        }
-        vector<const Assertion*> tokens(1, assertion);
-        GSSEAPResolver gssResolver(NULL, (const char *)nameBuf.value);
-        ctx->resCtx = gssResolver.resolveAttributes(*app, site.second,
-                                                    samlconstants::SAML20P_NS,
-                                                    NULL, subjectName, NULL,
-                                                    NULL, &tokens);
-    } catch (exception &ex) {
-        major = GSS_S_BAD_NAME;
-        goto cleanup;
-    }
+gss_eap_attr_provider *
+gss_eap_saml_assertion_provider::createAttrContext(const gss_eap_attr_ctx *ctx,
+                                                   gss_cred_id_t gssCred,
+                                                   gss_ctx_id_t gssCtx)
+{
+    return new gss_eap_saml_assertion_provider(ctx, gssCred, gssCtx);
+}
 
-    major = GSS_S_COMPLETE;
-    *pCtx = ctx;
+/*
+ * gss_eap_saml_attr_provider is for retrieving the underlying attributes.
+ */
+const saml2::Assertion *
+gss_eap_saml_attr_provider::getAssertion(void) const
+{
+    gss_eap_saml_assertion_provider *saml;
+    
+    saml = dynamic_cast<gss_eap_saml_assertion_provider *>(m_source->getProvider(ATTR_TYPE_SAML_ASSERTION));
+    assert(saml != NULL);
 
-cleanup:
-    sp->unlock();
-    conf.term();
+    return saml->getAssertion();
+}
 
-    if (GSS_ERROR(major))
-        samlReleaseAttrContext(&tmpMinor, &ctx);
-    gss_release_buffer(&tmpMinor, &nameBuf);
+gss_eap_saml_attr_provider::gss_eap_saml_attr_provider(const gss_eap_attr_ctx *ctx,
+                                                       gss_cred_id_t gssCred,
+                                                       gss_ctx_id_t gssCtx)
+    : gss_eap_attr_provider(ctx, gssCred, gssCtx)
+{
+    /* Nothing to do, we're just a wrapper around the assertion provider. */
+}
 
-    return major;
+gss_eap_saml_attr_provider::~gss_eap_saml_attr_provider(void)
+{
+    /* Nothing to do, we're just a wrapper around the assertion provider. */
 }
 
-OM_uint32
-samlGetAttributeTypes(OM_uint32 *minor,
-                      const struct eap_gss_saml_attr_ctx *ctx,
-                      void *data,
-                      OM_uint32 (*addAttribute)(OM_uint32 *, void *, gss_buffer_t))
+bool
+gss_eap_saml_attr_provider::getAttributeTypes(gss_eap_attr_enumeration_cb addAttribute,
+                                              void *data) const
 {
-    OM_uint32 major = GSS_S_COMPLETE;
+    const saml2::Assertion *assertion = getAssertion();
 
-    if (ctx == NULL)
-        return GSS_S_COMPLETE;
+    if (assertion == NULL)
+        return true;
 
-    for (vector<Attribute*>::const_iterator a = ctx->resCtx->getResolvedAttributes().begin();
-        a != ctx->resCtx->getResolvedAttributes().end();
+    const vector<saml2::Attribute*>& attrs2 =
+        const_cast<const saml2::AttributeStatement*>(assertion->getAttributeStatements().front())->getAttributes();
+    for (vector<saml2::Attribute*>::const_iterator a = attrs2.begin();
+        a != attrs2.end();
         ++a)
     {
         gss_buffer_desc attribute;
 
-        attribute.value = (void *)((*a)->getId());
+        attribute.value = (void *)toUTF8((*a)->getName(), true);
         attribute.length = strlen((char *)attribute.value);
 
-        major = addAttribute(minor, data, &attribute);
-        if (GSS_ERROR(major))
-            break;
+        if (!addAttribute(this, &attribute, data))
+            return false;
+
+        delete (char *)attribute.value;
     }
 
-    return major;
+    return true;
 }
 
-OM_uint32
-samlGetAttribute(OM_uint32 *minor,
-                 const struct eap_gss_saml_attr_ctx *ctx,
-                 gss_buffer_t attr,
-                 int *authenticated,
-                 int *complete,
-                 gss_buffer_t value,
-                 gss_buffer_t display_value,
-                 int *more)
+void
+gss_eap_saml_attr_provider::setAttribute(int complete,
+                                         const gss_buffer_t attr,
+                                         const gss_buffer_t value)
 {
-    OM_uint32 major;
-    Attribute *shibAttr = NULL;
-    gss_buffer_desc buf;
-
-    if (ctx == NULL)
-        return GSS_S_UNAVAILABLE;
-
-    for (vector<Attribute *>::const_iterator a = ctx->resCtx->getResolvedAttributes().begin();
-         a != ctx->resCtx->getResolvedAttributes().end();
-         ++a) {
-        for (vector<string>::const_iterator s = (*a)->getAliases().begin();
-             s != (*a)->getAliases().end();
-             ++s) {
-            if (attr->length == strlen((*s).c_str()) &&
-                memcmp((*s).c_str(), attr->value, attr->length) == 0) {
-                shibAttr = *a;
-                break;
-            }
-        }
-        if (shibAttr != NULL)
-            break;
-    }
+}
 
-    if (shibAttr == NULL)
-        return GSS_S_UNAVAILABLE;
+void
+gss_eap_saml_attr_provider::deleteAttribute(const gss_buffer_t value)
+{
+}
 
-    if (*more == -1) {
-        *more = 0;
-    } else if (*more >= (int)shibAttr->valueCount()) {
-        *more = 0;
-        return GSS_S_COMPLETE;
+const saml2::Attribute *
+gss_eap_saml_attr_provider::getAttribute(const gss_buffer_t attr) const
+{
+    const saml2::Assertion *assertion = getAssertion();
+    saml2::AttributeStatement *statement;
+
+    if (assertion == NULL)
+        return NULL;
+
+    if (assertion->getAttributeStatements().size() == 0)
+        return NULL;
+
+    statement = assertion->getAttributeStatements().front();
+
+    auto_ptr_gss_buffer attrname(attr);
+
+    const vector<saml2::Attribute*>& attrs2 =
+        const_cast<const saml2::AttributeStatement*>(statement)->getAttributes();
+
+    for (vector<saml2::Attribute*>::const_iterator a = attrs2.begin();
+        a != attrs2.end();
+        ++a) {
+        if (XMLString::equals((*a)->getName(), attrname.get()))
+            return *a;
     }
 
-    buf.value = (void *)shibAttr->getString(*more);
-    buf.length = strlen((char *)buf.value);
+    return NULL;
+}
+
+bool
+gss_eap_saml_attr_provider::getAttribute(const gss_buffer_t attr,
+                                         int *authenticated,
+                                         int *complete,
+                                         gss_buffer_t value,
+                                         gss_buffer_t display_value,
+                                         int *more) const
+{
+    const saml2::Attribute *a;
+    const saml2::AttributeValue *av;
+    int nvalues, i = *more;
+
+    *more = 0;
+
+    a = getAttribute(attr);
+    if (a == NULL)
+        return false;
+
+    nvalues = a->getAttributeValues().size();
+
+    if (i == -1)
+        i = 0;
+    else if (i >= nvalues)
+        return false;
+    av = dynamic_cast<const saml2::AttributeValue *>(a->getAttributeValues().at(i)
+);
+    if (av == NULL)
+        return false;
 
-    major = duplicateBuffer(minor, &buf, value);
-    if (GSS_ERROR(major))
-        return major;
- 
     *authenticated = TRUE;
     *complete = FALSE;
 
-    return GSS_S_COMPLETE;
+    value->value = toUTF8(av->getTextContent(), true);
+    value->length = strlen((char *)value->value);
+
+    if (nvalues > ++i)
+        *more = i;
+
+    return true;
+}
+
+gss_any_t
+gss_eap_saml_attr_provider::mapToAny(int authenticated,
+                                          gss_buffer_t type_id) const
+{
+    return (gss_any_t)0;
+}
+
+void
+gss_eap_saml_attr_provider::releaseAnyNameMapping(gss_buffer_t type_id,
+                                                  gss_any_t input) const
+{
+}
+
+void
+gss_eap_saml_attr_provider::marshall(gss_buffer_t buffer) const
+{
+}
+
+gss_eap_attr_provider *
+gss_eap_saml_attr_provider::unmarshall(const gss_eap_attr_ctx *ctx,
+                                       const gss_buffer_t buffer)
+{
+    return new gss_eap_saml_attr_provider(ctx);
 }
 
-OM_uint32
-samlSetAttribute(OM_uint32 *minor,
-                 struct eap_gss_saml_attr_ctx *ctx,
-                 int complete,
-                 gss_buffer_t attr,
-                 gss_buffer_t value)
+bool
+gss_eap_saml_attr_provider::init(void)
 {
-    return GSS_S_UNAVAILABLE;
+    return true;
 }
 
-OM_uint32
-samlExportAttrContext(OM_uint32 *minor,
-                      struct eap_gss_saml_attr_ctx *ctx,
-                      gss_buffer_t buffer)
+void
+gss_eap_saml_attr_provider::finalize(void)
 {
-    GSSEAP_NOT_IMPLEMENTED;
 }
 
-OM_uint32
-samlImportAttrContext(OM_uint32 *minor,
-                      gss_buffer_t buffer,
-                      struct eap_gss_saml_attr_ctx **ppCtx)
+gss_eap_attr_provider *
+gss_eap_saml_attr_provider::createAttrContext(const gss_eap_attr_ctx *ctx,
+                                              gss_cred_id_t gssCred,
+                                              gss_ctx_id_t gssCtx)
 {
-    GSSEAP_NOT_IMPLEMENTED;
+    return new gss_eap_saml_attr_provider(ctx, gssCred, gssCtx);
 }