Better error reporting through com_err
[mech_eap.git] / util_shib.cpp
index 7d34577..a37329f 100644 (file)
@@ -31,7 +31,7 @@
  */
 /*
  * 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
  * limitations under the License.
  */
 
-#include "gssapiP_eap.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/SimpleAttribute.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 <xercesc/util/XMLUniDefs.hpp>
-#include <xmltooling/XMLToolingConfig.h>
-#include <xmltooling/util/XMLHelper.h>
+#include <shibresolver/resolver.h>
 
-#include "resolver.h"
+#include <sstream>
+
+#include "gssapiP_eap.h"
 
 using namespace shibsp;
 using namespace shibresolver;
 using namespace opensaml::saml2md;
 using namespace opensaml;
-using namespace xmltooling::logging;
 using namespace xmltooling;
-using namespace xercesc;
 using namespace std;
 
-static vector <Attribute *>
-duplicateAttributes(const vector <Attribute *>src);
+gss_eap_shib_attr_provider::gss_eap_shib_attr_provider(void)
+{
+    m_authenticated = false;
+}
 
-gss_eap_shib_attr_provider::gss_eap_shib_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)
+gss_eap_shib_attr_provider::~gss_eap_shib_attr_provider(void)
 {
-    if (gssCtx == GSS_C_NO_CONTEXT) {
-        gss_eap_shib_attr_provider *shib;
-
-        shib = dynamic_cast<gss_eap_shib_attr_provider *>
-            (ctx->getProvider(ATTR_TYPE_LOCAL));
-        if (shib != NULL)
-            m_attributes = duplicateAttributes(shib->m_attributes);
-    } else {
-        gss_eap_saml_assertion_provider *saml;
-        gss_eap_radius_attr_provider *radius;
-        gss_buffer_desc nameBuf = GSS_C_EMPTY_BUFFER;
-        ShibbolethResolver *resolver = NULL;
-        OM_uint32 minor;
+    for_each(m_attributes.begin(),
+             m_attributes.end(),
+             xmltooling::cleanup<Attribute>())
+        ;
+}
 
-        saml = dynamic_cast<gss_eap_saml_assertion_provider *>
-            (ctx->getProvider(ATTR_TYPE_SAML_ASSERTION));
-        radius = dynamic_cast<gss_eap_radius_attr_provider *>
-            (ctx->getProvider(ATTR_TYPE_RADIUS));
+bool
+gss_eap_shib_attr_provider::initFromExistingContext(const gss_eap_attr_ctx *manager,
+                                                    const gss_eap_attr_provider *ctx)
+{
+    const gss_eap_shib_attr_provider *shib;
 
-        if (radius == NULL)
-            return;
+    if (!gss_eap_attr_provider::initFromExistingContext(manager, ctx)) {
+        return false;
+    }
+
+    m_authenticated = false;
+
+    shib = static_cast<const gss_eap_shib_attr_provider *>(ctx);
+    if (shib != NULL) {
+        m_attributes = duplicateAttributes(shib->getAttributes());
+        m_authenticated = shib->authenticated();
+    }
+
+    return true;
+}
+
+bool
+addRadiusAttribute(const gss_eap_attr_provider *provider,
+                   const gss_buffer_t attribute,
+                   void *data)
+{
+    const gss_eap_shib_attr_provider *shib;
+    const gss_eap_radius_attr_provider *radius;
+    int authenticated, complete, more = -1;
+    vector <string> attributeIds(1);
+    SimpleAttribute *a;
 
-        if (gssCred != GSS_C_NO_CREDENTIAL &&
-            gss_display_name(&minor, gssCred->name, &nameBuf, NULL) == GSS_S_COMPLETE)
-            resolver->setApplicationID((const char *)nameBuf.value);
+    radius = static_cast<const gss_eap_radius_attr_provider *>(provider);
+    shib = static_cast<const gss_eap_shib_attr_provider *>(data);
 
-        if (saml != NULL && saml->getAssertion() != NULL)
-            resolver->addToken(saml->getAssertion());
+    assert(radius != NULL && shib != NULL);
 
-        /* TODO inject RADIUS attribute types */
+    string attributeName =
+        gss_eap_attr_ctx::composeAttributeName(ATTR_TYPE_RADIUS, attribute);
 
-        resolver->resolveAttributes(m_attributes);
+    attributeIds.push_back(attributeName);
+    a = new SimpleAttribute(attributeIds);
+    if (a == NULL)
+        return false;
 
-        gss_release_buffer(&minor, &nameBuf);
+    while (more != 0) {
+        gss_buffer_desc value = GSS_C_EMPTY_BUFFER;
+        OM_uint32 minor;
 
-        delete resolver;
+        if (!radius->getAttribute(attribute,
+                                  &authenticated,
+                                  &complete,
+                                  &value,
+                                  NULL,
+                                  &more))
+            return false;
+
+        string attributeValue((char *)value.value, value.length);
+        a->getValues().push_back(attributeValue);
+
+        gss_release_buffer(&minor, &value);
     }
+
+    shib->getAttributes().push_back(a);
+
+    return true;
 }
 
-gss_eap_shib_attr_provider::~gss_eap_shib_attr_provider(void)
+bool
+gss_eap_shib_attr_provider::initFromGssContext(const gss_eap_attr_ctx *manager,
+                                               const gss_cred_id_t gssCred,
+                                               const gss_ctx_id_t gssCtx)
 {
-    for_each(m_attributes.begin(), m_attributes.end(), xmltooling::cleanup<Attribute>());
+    const gss_eap_saml_assertion_provider *saml;
+    const gss_eap_radius_attr_provider *radius;
+    gss_buffer_desc nameBuf = GSS_C_EMPTY_BUFFER;
+    ShibbolethResolver *resolver;
+    OM_uint32 minor;
+
+    if (!gss_eap_attr_provider::initFromGssContext(manager, gssCred, gssCtx))
+        return false;
+
+    saml = static_cast<const gss_eap_saml_assertion_provider *>
+        (m_manager->getProvider(ATTR_TYPE_SAML_ASSERTION));
+    radius = static_cast<const gss_eap_radius_attr_provider *>
+        (m_manager->getProvider(ATTR_TYPE_RADIUS));
+
+    resolver = ShibbolethResolver::create();
+
+    if (gssCred != GSS_C_NO_CREDENTIAL &&
+        gssEapDisplayName(&minor, gssCred->name, &nameBuf, NULL) == GSS_S_COMPLETE)
+        resolver->setApplicationID((const char *)nameBuf.value);
+
+    m_authenticated = false;
+
+    if (radius != NULL) {
+        radius->getAttributeTypes(addRadiusAttribute, (void *)this);
+        m_authenticated = radius->authenticated();
+    }
+
+    if (saml != NULL && saml->getAssertion() != NULL) {
+        resolver->addToken(saml->getAssertion());
+        if (m_authenticated)
+            m_authenticated = saml->authenticated();
+    }
+
+    resolver->resolve();
+
+    m_attributes = resolver->getResolvedAttributes();
+    resolver->getResolvedAttributes().clear();
+
+    gss_release_buffer(&minor, &nameBuf);
+
+    delete resolver;
+
+    return true;
 }
 
 int
@@ -156,19 +220,17 @@ gss_eap_shib_attr_provider::setAttribute(int complete,
                                          const gss_buffer_t value)
 {
     string attrStr((char *)attr->value, attr->length);
-    vector <string> ids(1);
-
-    ids.push_back(attrStr);
-
+    vector <string> ids(1, attrStr);
     SimpleAttribute *a = new SimpleAttribute(ids);
 
     if (value->length != 0) {
-        string valStr((char *)value->value, value->length);
+        string valueStr((char *)value->value, value->length);
 
-        a->getValues().push_back(valStr);        
+        a->getValues().push_back(valueStr);
     }
 
     m_attributes.push_back(a);
+    m_authenticated = false;
 }
 
 void
@@ -179,6 +241,8 @@ gss_eap_shib_attr_provider::deleteAttribute(const gss_buffer_t attr)
     i = getAttributeIndex(attr);
     if (i >= 0)
         m_attributes.erase(m_attributes.begin() + i);
+
+    m_authenticated = false;
 }
 
 bool
@@ -236,25 +300,39 @@ gss_eap_shib_attr_provider::getAttribute(const gss_buffer_t attr,
 {
     const Attribute *shibAttr = NULL;
     gss_buffer_desc buf;
+    int nvalues, i = *more;
+
+    *more = 0;
 
     shibAttr = getAttribute(attr);
     if (shibAttr == NULL)
         return false;
 
-    if (*more == -1) {
-        *more = 0;
-    } else if (*more >= (int)shibAttr->valueCount()) {
-        *more = 0;
-        return true;
-    }
+    nvalues = shibAttr->valueCount();
+
+    if (i == -1)
+        i = 0;
+    else if (i >= nvalues)
+        return false;
 
     buf.value = (void *)shibAttr->getString(*more);
     buf.length = strlen((char *)buf.value);
 
-    duplicateBuffer(buf, value);
-    *authenticated = TRUE;
-    *complete = FALSE;
+    if (buf.length != 0) {
+        if (value != NULL)
+            duplicateBuffer(buf, value);
+
+        if (display_value != NULL)
+            duplicateBuffer(buf, display_value);
+    }
+
+    if (authenticated != NULL)
+        *authenticated = m_authenticated;
+    if (complete != NULL)
+        *complete = false;
+
+    if (nvalues > ++i)
+        *more = i;
 
     return true;
 }
@@ -265,6 +343,9 @@ gss_eap_shib_attr_provider::mapToAny(int authenticated,
 {
     gss_any_t output;
 
+    if (authenticated && !m_authenticated)
+        return (gss_any_t)NULL;
+
     vector <Attribute *>v = duplicateAttributes(m_attributes);
 
     output = (gss_any_t)new vector <Attribute *>(v);
@@ -281,51 +362,108 @@ gss_eap_shib_attr_provider::releaseAnyNameMapping(gss_buffer_t type_id,
 }
 
 void
-gss_eap_shib_attr_provider::marshall(gss_buffer_t buffer) const
+gss_eap_shib_attr_provider::exportToBuffer(gss_buffer_t buffer) const
 {
+    DDF obj(NULL);
+    DDF attrs(NULL);
+
+    buffer->length = 0;
+    buffer->value = NULL;
+
+    obj.addmember("version").integer(1);
+    obj.addmember("authenticated").integer(m_authenticated);
+
+    attrs = obj.addmember("attributes").list();
+    for (vector<Attribute*>::const_iterator a = m_attributes.begin();
+         a != m_attributes.end(); ++a) {
+        DDF attr = (*a)->marshall();
+        attrs.add(attr);
+    }
+
+    ostringstream sink;
+    sink << attrs;
+    string str = sink.str();
+
+    duplicateBuffer(str, buffer);
+
+    attrs.destroy();
 }
 
-gss_eap_attr_provider *
-gss_eap_shib_attr_provider::unmarshall(const gss_eap_attr_ctx *ctx,
-                                       const gss_buffer_t buffer)
+bool
+gss_eap_shib_attr_provider::initFromBuffer(const gss_eap_attr_ctx *ctx,
+                                           const gss_buffer_t buffer)
 {
-    return NULL;
+    if (!gss_eap_attr_provider::initFromBuffer(ctx, buffer))
+        return false;
+
+    if (buffer->length == 0)
+        return true;
+
+    assert(m_authenticated == false);
+    assert(m_attributes.size() == 0);
+
+    DDF obj(NULL);
+    string str((const char *)buffer->value, buffer->length);
+    istringstream source(str);
+
+    source >> obj;
+
+    if (obj["version"].integer() != 1)
+        return false;
+
+    m_authenticated = (obj["authenticated"].integer() != 0);
+
+    DDF attrs = obj["attributes"];
+    DDF attr = attrs.first();
+    while (!attr.isnull()) {
+        Attribute *attribute = Attribute::unmarshall(attr);
+        m_attributes.push_back(attribute);
+        attr = attrs.next();
+    }
+
+    attrs.destroy();
+
+    return true;
 }
 
 bool
 gss_eap_shib_attr_provider::init(void)
 {
-    return ShibbolethResolver::init();
+    if (!ShibbolethResolver::init())
+        return false;
+
+    gss_eap_attr_ctx::registerProvider(ATTR_TYPE_LOCAL,
+                                       NULL,
+                                       gss_eap_shib_attr_provider::createAttrContext);
+
+    return true;
 }
 
 void
 gss_eap_shib_attr_provider::finalize(void)
 {
+    gss_eap_attr_ctx::unregisterProvider(ATTR_TYPE_LOCAL);
     ShibbolethResolver::term();
 }
 
 gss_eap_attr_provider *
-gss_eap_shib_attr_provider::createAttrContext(const gss_eap_attr_ctx *ctx,
-                                              gss_cred_id_t gssCred,
-                                              gss_ctx_id_t gssCtx)
+gss_eap_shib_attr_provider::createAttrContext(void)
 {
-    return new gss_eap_shib_attr_provider(ctx, gssCred, gssCtx);
+    return new gss_eap_shib_attr_provider;
 }
 
-static Attribute *
-duplicateAttribute(const Attribute *src)
+Attribute *
+gss_eap_shib_attr_provider::duplicateAttribute(const Attribute *src)
 {
-    Attribute *attribute;
-
     DDF obj = src->marshall();
-    attribute = Attribute::unmarshall(obj);
+    Attribute *attribute = Attribute::unmarshall(obj);
     obj.destroy();
 
     return attribute;
 }
 
-static vector <Attribute *>
-duplicateAttributes(const vector <Attribute *>src)
+vector <Attribute *>
+gss_eap_shib_attr_provider::duplicateAttributes(const vector <Attribute *>src)
 {
     vector <Attribute *> dst;
 
@@ -336,3 +474,20 @@ duplicateAttributes(const vector <Attribute *>src)
 
     return dst;
 }
+
+OM_uint32
+gssEapLocalAttrProviderInit(OM_uint32 *minor)
+{
+    if (!gss_eap_shib_attr_provider::init()) {
+        *minor = GSSEAP_SHIB_INIT_FAILURE;
+        return GSS_S_FAILURE;
+    }
+    return GSS_S_COMPLETE;
+}
+
+OM_uint32
+gssEapLocalAttrProviderFinalize(OM_uint32 *minor)
+{
+    gss_eap_shib_attr_provider::finalize();
+    return GSS_S_COMPLETE;
+}