#include "internal.h"
#include "exceptions.h"
+#include "binding/HTTPRequest.h"
#include "saml2/binding/SAML2POSTDecoder.h"
#include "saml2/core/Protocols.h"
#include "saml2/metadata/Metadata.h"
#include "saml2/metadata/MetadataProvider.h"
-#include "security/X509TrustEngine.h"
#include <log4cpp/Category.hh>
#include <xercesc/util/Base64.hpp>
#include <xmltooling/util/NDC.h>
-#include <xmltooling/util/ReplayCache.h>
#include <xmltooling/validation/ValidatorSuite.h>
using namespace opensaml::saml2md;
using namespace opensaml::saml2p;
using namespace opensaml::saml2;
using namespace opensaml;
-using namespace xmlsignature;
using namespace xmltooling;
using namespace log4cpp;
using namespace std;
SAML2POSTDecoder::~SAML2POSTDecoder() {}
-XMLObject* SAML2POSTDecoder::decode(
- string& relayState,
- const RoleDescriptor*& issuer,
- const XMLCh*& securityMech,
- const HTTPRequest& httpRequest,
- const MetadataProvider* metadataProvider,
- const QName* role,
- const opensaml::TrustEngine* trustEngine
+saml2::RootObject* SAML2POSTDecoder::decode(
+ std::string& relayState,
+ const GenericRequest& genericRequest,
+ SecurityPolicy& policy
) const
{
#ifdef _DEBUG
Category& log = Category::getInstance(SAML_LOGCAT".MessageDecoder.SAML2POST");
log.debug("validating input");
- if (strcmp(httpRequest.getMethod(),"POST"))
+ const HTTPRequest* httpRequest=dynamic_cast<const HTTPRequest*>(&genericRequest);
+ if (!httpRequest) {
+ log.error("unable to cast request to HTTPRequest type");
return NULL;
- const char* msg = httpRequest.getParameter("SAMLResponse");
+ }
+ if (strcmp(httpRequest->getMethod(),"POST"))
+ return NULL;
+ const char* msg = httpRequest->getParameter("SAMLResponse");
if (!msg)
- msg = httpRequest.getParameter("SAMLRequest");
+ msg = httpRequest->getParameter("SAMLRequest");
if (!msg)
return NULL;
- const char* state = httpRequest.getParameter("RelayState");
+ const char* state = httpRequest->getParameter("RelayState");
if (state)
relayState = state;
else
auto_ptr<XMLObject> xmlObject(XMLObjectBuilder::buildOneFromElement(doc->getDocumentElement(), true));
janitor.release();
+ saml2::RootObject* root = NULL;
StatusResponseType* response = NULL;
RequestAbstractType* request = dynamic_cast<RequestAbstractType*>(xmlObject.get());
if (!request) {
response = dynamic_cast<StatusResponseType*>(xmlObject.get());
if (!response)
throw BindingException("XML content for SAML 2.0 HTTP-POST Decoder must be a SAML 2.0 protocol message.");
+ root = static_cast<saml2::RootObject*>(response);
}
-
- /* For SAML 2, the issuer can be established either from the message, or in some profiles
- * it's possible to omit it and defer to assertions in a Response.
- * The Issuer is later matched against metadata, and then trust checking can be applied.
- */
- const Issuer* claimedIssuer = request ? request->getIssuer() : response->getIssuer();
- if (!claimedIssuer) {
- // Check assertion option. I cannot resist the variable name, for the sake of google.
- const Response* assbag = dynamic_cast<const Response*>(response);
- if (assbag) {
- const vector<Assertion*>& assertions=assbag->getAssertions();
- if (!assertions.empty())
- claimedIssuer = assertions.front()->getIssuer();
- }
+ else {
+ root = static_cast<saml2::RootObject*>(request);
}
-
- const EntityDescriptor* provider=NULL;
+
try {
if (!m_validate)
SchemaValidators.validate(xmlObject.get());
- Signature* signature = request ? request->getSignature() : response->getSignature();
-
// Check destination URL.
auto_ptr_char dest(request ? request->getDestination() : response->getDestination());
- const char* dest2 = httpRequest.getRequestURL();
- if (signature && !dest.get() || !*(dest.get())) {
+ const char* dest2 = httpRequest->getRequestURL();
+ if (root->getSignature() && !dest.get() || !*(dest.get())) {
log.error("signed SAML message missing Destination attribute");
throw BindingException("Signed SAML message missing Destination attribute identifying intended destination.");
}
throw BindingException("SAML message delivered with POST to incorrect server URL.");
}
- // Check freshness.
- time_t now = time(NULL);
- if ((request ? request->getIssueInstant()->getEpoch() : response->getIssueInstant()->getEpoch())
- < now-(2*XMLToolingConfig::getConfig().clock_skew_secs))
- throw BindingException("Detected expired POST binding message.");
-
- // Check replay.
- ReplayCache* replayCache = XMLToolingConfig::getConfig().getReplayCache();
- if (replayCache) {
- auto_ptr_char id(xmlObject->getXMLID());
- if (!replayCache->check("SAML2POST", id.get(), response->getIssueInstant()->getEpoch() + (2*XMLToolingConfig::getConfig().clock_skew_secs))) {
- log.error("replay detected of response ID (%s)", id.get());
- throw BindingException("Rejecting replayed response ID ($1).", params(1,id.get()));
- }
- }
- else
- log.warn("replay cache was not provided, this is a serious security risk!");
-
- issuer = NULL;
- securityMech = false;
- log.debug("attempting to establish issuer and integrity of message...");
-
- // If we can't identify the issuer, we're done, since we can't lookup or verify anything.
- if (!claimedIssuer || !claimedIssuer->getName()) {
- log.warn("unable to establish identity of message issuer");
- return xmlObject.release();
- }
- else if (claimedIssuer->getFormat() && !XMLString::equals(claimedIssuer->getFormat(), NameIDType::ENTITY)) {
- auto_ptr_char iformat(claimedIssuer->getFormat());
- log.warn("message issuer was in an unsupported format (%s)", iformat.get());
- return xmlObject.release();
- }
-
- log.debug("searching metadata for assertion issuer...");
- provider=metadataProvider ? metadataProvider->getEntityDescriptor(claimedIssuer->getName()) : NULL;
- if (provider) {
- log.debug("matched assertion issuer against metadata, searching for applicable role...");
- issuer=provider->getRoleDescriptor(*role, samlconstants::SAML20P_NS);
- if (issuer) {
- if (trustEngine && signature) {
- if (!trustEngine->validate(*signature, *issuer, metadataProvider->getKeyResolver())) {
- log.error("unable to verify signature on message with supplied trust engine");
- throw BindingException("Message signature failed verification.");
- }
- else {
- securityMech = samlconstants::SAML20P_NS;
- }
- }
- else {
- log.warn("unable to authenticate the message, leaving untrusted");
- }
- }
- else {
- log.warn("unable to find compatible SAML 2.0 role (%s) in metadata", role->toString().c_str());
- }
- if (log.isDebugEnabled()) {
- auto_ptr_char iname(provider->getEntityID());
- log.debug("message from (%s), integrity %sverified", iname.get(), securityMech ? "" : "NOT ");
- }
- }
- else {
- auto_ptr_char temp(claimedIssuer->getName());
- log.warn("no metadata found, can't establish identity of issuer (%s)", temp.get());
- }
+ // Run through the policy.
+ policy.evaluate(genericRequest, *response);
}
catch (XMLToolingException& ex) {
- if (!provider) {
- if (!claimedIssuer || !claimedIssuer->getName())
- throw;
- if (!metadataProvider || !(provider=metadataProvider->getEntityDescriptor(claimedIssuer->getName(), false))) {
- // Just record it.
- auto_ptr_char iname(claimedIssuer->getName());
- if (iname.get())
- ex.addProperty("entityID", iname.get());
- throw;
+ // This is just to maximize the likelihood of attaching a source to the message for support purposes.
+ if (policy.getIssuerMetadata())
+ annotateException(&ex,policy.getIssuerMetadata()); // throws it
+
+ const Issuer* claimedIssuer = root->getIssuer();
+ if (!claimedIssuer) {
+ // Check for assertions.
+ const Response* assbag = dynamic_cast<Response*>(response);
+ if (assbag) {
+ const vector<Assertion*>& assertions=assbag->getAssertions();
+ if (!assertions.empty())
+ claimedIssuer = assertions.front()->getIssuer();
}
}
- if (!issuer)
- issuer=provider->getRoleDescriptor(*role, samlconstants::SAML20P_NS);
- if (issuer) annotateException(&ex,issuer); // throws it
+
+ if (!claimedIssuer || !claimedIssuer->getName())
+ throw;
+ const EntityDescriptor* provider=NULL;
+ if (!policy.getMetadataProvider() ||
+ !(provider=policy.getMetadataProvider()->getEntityDescriptor(claimedIssuer->getName(), false))) {
+ // Just record it.
+ auto_ptr_char iname(claimedIssuer->getName());
+ if (iname.get())
+ ex.addProperty("entityID", iname.get());
+ throw;
+ }
+
+ if (policy.getRole()) {
+ const RoleDescriptor* roledesc=provider->getRoleDescriptor(*(policy.getRole()), samlconstants::SAML20P_NS);
+ if (roledesc) annotateException(&ex,roledesc); // throws it
+ }
annotateException(&ex,provider); // throws it
}
- return xmlObject.release();
+ xmlObject.release();
+ return root;
}
projects / shibboleth / cpp-opensaml.git / blobdiff