Merged issuer/protocol extraction back into rules.

[shibboleth/cpp-opensaml.git] / saml / binding / impl / SimpleSigningRule.cpp

diff --git a/saml/binding/impl/SimpleSigningRule.cpp b/saml/binding/impl/SimpleSigningRule.cpp
index 6ba58f8..91e53fa 100644 (file)
--- a/saml/binding/impl/SimpleSigningRule.cpp
+++ b/saml/binding/impl/SimpleSigningRule.cpp
@@ -24,6 +24,7 @@
 #include "exceptions.h"
 #include "binding/HTTPRequest.h"
 #include "binding/SimpleSigningRule.h"
+#include "saml2/core/Protocols.h"
 #include "saml2/metadata/Metadata.h"
 #include "saml2/metadata/MetadataProvider.h"
 #include "security/TrustEngine.h"
@@ -72,8 +73,7 @@ pair<saml2::Issuer*,const RoleDescriptor*> SimpleSigningRule::evaluate(
     const XMLObject& message,
     const MetadataProvider* metadataProvider,
     const QName* role,
-    const opensaml::TrustEngine* trustEngine,
-    const MessageExtractor& extractor
+    const opensaml::TrustEngine* trustEngine
     ) const
 {
     Category& log=Category::getInstance(SAML_LOGCAT".SecurityPolicyRule.SimpleSigning");
@@ -100,7 +100,7 @@ pair<saml2::Issuer*,const RoleDescriptor*> SimpleSigningRule::evaluate(
 
     try {
         log.debug("extracting issuer from message");
-        pair<saml2::Issuer*,const XMLCh*> issuerInfo = extractor.getIssuerAndProtocol(message);
+        pair<saml2::Issuer*,const XMLCh*> issuerInfo = getIssuerAndProtocol(message);
         
         auto_ptr<saml2::Issuer> issuer(issuerInfo.first);
         if (!issuerInfo.first || !issuerInfo.second ||
@@ -193,3 +193,29 @@ pair<saml2::Issuer*,const RoleDescriptor*> SimpleSigningRule::evaluate(
     }
     return ret;
 }
+
+pair<saml2::Issuer*,const XMLCh*> SimpleSigningRule::getIssuerAndProtocol(const XMLObject& message) const
+{
+    // We just let any bad casts throw here.
+
+    // Shortcuts some of the casting.
+    const XMLCh* ns = message.getElementQName().getNamespaceURI();
+    if (ns) {
+        if (XMLString::equals(ns, samlconstants::SAML20P_NS)) {
+            // 2.0 namespace should be castable to a specialized 2.0 root.
+            const saml2::RootObject& root = dynamic_cast<const saml2::RootObject&>(message);
+            saml2::Issuer* issuer = root.getIssuer();
+            if (issuer && issuer->getName())
+                return make_pair(issuer->cloneIssuer(), samlconstants::SAML20P_NS);
+            
+            // No issuer in the message, so we have to try the Response approach. 
+            const vector<saml2::Assertion*>& assertions = dynamic_cast<const saml2p::Response&>(message).getAssertions();
+            if (!assertions.empty()) {
+                issuer = assertions.front()->getIssuer();
+                if (issuer && issuer->getName())
+                    return make_pair(issuer->cloneIssuer(), samlconstants::SAML20P_NS);
+            }
+        }
+    }
+    return pair<saml2::Issuer*,const XMLCh*>(NULL,NULL);
+}