-/*
- * Copyright 2001-2006 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
+/**
+ * Licensed to the University Corporation for Advanced Internet
+ * Development, Inc. (UCAID) under one or more contributor license
+ * agreements. See the NOTICE file distributed with this work for
+ * additional information regarding copyright ownership.
+ *
+ * UCAID licenses this file to you 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
+ * 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.
+ * 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.
*/
/**
* SAML1POSTDecoder.cpp
*
- * SAML 1.x POST binding/profile message decoder
+ * SAML 1.x POST binding/profile message decoder.
*/
#include "internal.h"
#include "exceptions.h"
+#include "binding/SecurityPolicy.h"
+#include "saml1/binding/SAML1MessageDecoder.h"
#include "saml1/core/Assertions.h"
-#include "saml1/binding/SAML1POSTDecoder.h"
+#include "saml1/core/Protocols.h"
#include "saml2/metadata/Metadata.h"
#include "saml2/metadata/MetadataProvider.h"
-#include "security/X509TrustEngine.h"
-#include <log4cpp/Category.hh>
+#include <xercesc/framework/MemBufInputSource.hpp>
+#include <xercesc/framework/Wrapper4InputSource.hpp>
#include <xercesc/util/Base64.hpp>
+#include <xmltooling/logging.h>
+#include <xmltooling/XMLToolingConfig.h>
+#include <xmltooling/io/HTTPRequest.h>
#include <xmltooling/util/NDC.h>
-#include <xmltooling/util/ReplayCache.h>
+#include <xmltooling/util/ParserPool.h>
#include <xmltooling/validation/ValidatorSuite.h>
using namespace opensaml::saml2md;
using namespace opensaml::saml1p;
using namespace opensaml::saml1;
using namespace opensaml;
-using namespace xmlsignature;
+using namespace xmltooling::logging;
using namespace xmltooling;
-using namespace log4cpp;
using namespace std;
namespace opensaml {
namespace saml1p {
- MessageDecoder* SAML_DLLLOCAL SAML1POSTDecoderFactory(const DOMElement* const & e)
+ class SAML_DLLLOCAL SAML1POSTDecoder : public SAML1MessageDecoder
+ {
+ public:
+ SAML1POSTDecoder() {}
+ virtual ~SAML1POSTDecoder() {}
+
+ xmltooling::XMLObject* decode(
+ std::string& relayState,
+ const GenericRequest& genericRequest,
+ SecurityPolicy& policy
+ ) const;
+ };
+
+ MessageDecoder* SAML_DLLLOCAL SAML1POSTDecoderFactory(const pair<const DOMElement*,const XMLCh*>& p)
{
- return new SAML1POSTDecoder(e);
+ return new SAML1POSTDecoder();
}
};
};
-SAML1POSTDecoder::SAML1POSTDecoder(const DOMElement* e) {}
-
-SAML1POSTDecoder::~SAML1POSTDecoder() {}
-
-Response* SAML1POSTDecoder::decode(
+XMLObject* SAML1POSTDecoder::decode(
string& relayState,
- const RoleDescriptor*& issuer,
- bool& issuerTrusted,
- const HTTPRequest& httpRequest,
- const MetadataProvider* metadataProvider,
- const QName* role,
- const opensaml::TrustEngine* trustEngine
+ const GenericRequest& genericRequest,
+ SecurityPolicy& policy
) const
{
#ifdef _DEBUG
xmltooling::NDC ndc("decode");
#endif
- Category& log = Category::getInstance(SAML_LOGCAT".MessageDecoder.SAML1POST");
+ Category& log = Category::getInstance(SAML_LOGCAT ".MessageDecoder.SAML1POST");
log.debug("validating input");
- if (strcmp(httpRequest.getMethod(),"POST"))
- return NULL;
- const char* samlResponse = httpRequest.getParameter("SAMLResponse");
- const char* TARGET = httpRequest.getParameter("TARGET");
+ const HTTPRequest* httpRequest=dynamic_cast<const HTTPRequest*>(&genericRequest);
+ if (!httpRequest)
+ throw BindingException("Unable to cast request object to HTTPRequest type.");
+ if (strcmp(httpRequest->getMethod(),"POST"))
+ throw BindingException("Invalid HTTP method ($1).", params(1, httpRequest->getMethod()));
+ const char* samlResponse = httpRequest->getParameter("SAMLResponse");
+ const char* TARGET = httpRequest->getParameter("TARGET");
if (!samlResponse || !TARGET)
- return NULL;
+ throw BindingException("Request missing SAMLResponse or TARGET form parameters.");
relayState = TARGET;
- // Decode the base64 into SAML.
- unsigned int x;
+ // Decode the base64 into XML.
+ xsecsize_t x;
XMLByte* decoded=Base64::decode(reinterpret_cast<const XMLByte*>(samlResponse),&x);
if (!decoded)
throw BindingException("Unable to decode base64 in POST profile response.");
- log.debug("decoded SAML response:\n%s", decoded);
- istringstream is(reinterpret_cast<char*>(decoded));
- XMLString::release(&decoded);
-
+ log.debugStream() << "decoded SAML response:\n" << decoded << logging::eol;
+
// Parse and bind the document into an XMLObject.
- DOMDocument* doc = (m_validate ? XMLToolingConfig::getConfig().getValidatingParser()
- : XMLToolingConfig::getConfig().getParser()).parse(is);
+ MemBufInputSource src(decoded, x, "SAMLResponse", true);
+ Wrapper4InputSource dsrc(&src, false);
+ DOMDocument* doc = (policy.getValidating() ? XMLToolingConfig::getConfig().getValidatingParser()
+ : XMLToolingConfig::getConfig().getParser()).parse(dsrc);
XercesJanitor<DOMDocument> janitor(doc);
auto_ptr<XMLObject> xmlObject(XMLObjectBuilder::buildOneFromElement(doc->getDocumentElement(), true));
janitor.release();
if (!response)
throw BindingException("Decoded message was not a SAML 1.x Response.");
- const EntityDescriptor* provider=NULL;
- try {
- if (!m_validate)
- SchemaValidators.validate(xmlObject.get());
-
- // Check recipient URL.
- auto_ptr_char recipient(response->getRecipient());
- const char* recipient2 = httpRequest.getRequestURL();
- if (!recipient.get() || !*(recipient.get())) {
- log.error("response missing Recipient attribute");
- throw BindingException("SAML response did not contain Recipient attribute identifying intended destination.");
- }
- else if (!recipient2 || !*recipient2 || strcmp(recipient.get(),recipient2)) {
- log.error("POST targeted at (%s), but delivered to (%s)", recipient.get(), recipient2 ? recipient2 : "none");
- throw BindingException("SAML message delivered with POST to incorrect server URL.");
- }
-
- // Check freshness.
- time_t now = time(NULL);
- if (response->getIssueInstant()->getEpoch() < now-(2*XMLToolingConfig::getConfig().clock_skew_secs))
- throw BindingException("Detected expired POST profile response.");
-
- // Check replay.
- ReplayCache* replayCache = XMLToolingConfig::getConfig().getReplayCache();
- if (replayCache) {
- auto_ptr_char id(response->getResponseID());
- if (!replayCache->check("SAML1POST", 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!");
-
- /* For SAML 1, the issuer can only be established from any assertions in the message.
- * Generally, errors aren't delivered like this, so there should be one.
- * The Issuer attribute is matched against metadata, and then trust checking can be
- * applied.
- */
- issuer = NULL;
- issuerTrusted = false;
- log.debug("attempting to establish issuer and integrity of message...");
- const vector<Assertion*>& assertions=const_cast<const Response*>(response)->getAssertions();
- if (!assertions.empty()) {
- log.debug("searching metadata for assertion issuer...");
- provider=metadataProvider ? metadataProvider->getEntityDescriptor(assertions.front()->getIssuer()) : NULL;
- if (provider) {
- log.debug("matched assertion issuer against metadata, searching for applicable role...");
- pair<bool,int> minor = response->getMinorVersion();
- issuer=provider->getRoleDescriptor(
- *role,
- (minor.first && minor.second==0) ? samlconstants::SAML10_PROTOCOL_ENUM : samlconstants::SAML11_PROTOCOL_ENUM
- );
- if (issuer) {
- if (trustEngine && response->getSignature()) {
- issuerTrusted = trustEngine->validate(
- *(response->getSignature()), *issuer, metadataProvider->getKeyResolver()
- );
- if (!issuerTrusted) {
- log.error("unable to verify signature on message with supplied trust engine");
- throw BindingException("Message signature failed verification.");
- }
- }
- else {
- log.warn("unable to verify integrity of the message, leaving untrusted");
- }
- }
- else {
- log.warn(
- "unable to find compatible SAML 1.%d role (%s) in metadata",
- (minor.first && minor.second==0) ? 0 : 1,
- role->toString().c_str()
- );
- }
- if (log.isDebugEnabled()) {
- auto_ptr_char iname(assertions.front()->getIssuer());
- log.debug("message from (%s), integrity %sverified", iname.get(), issuerTrusted ? "" : "NOT ");
- }
- }
- else {
- auto_ptr_char temp(assertions.front()->getIssuer());
- log.warn("no metadata found, can't establish identity of issuer (%s)", temp.get());
- }
- }
- else {
- log.warn("no assertions found, can't establish identity of issuer");
- }
+ SchemaValidators.validate(response);
+
+ pair<bool,int> minor = response->getMinorVersion();
+ extractMessageDetails(
+ *response,
+ genericRequest,
+ (minor.first && minor.second==0) ? samlconstants::SAML10_PROTOCOL_ENUM : samlconstants::SAML11_PROTOCOL_ENUM,
+ policy
+ );
+
+ // Run through the policy.
+ policy.evaluate(*response,&genericRequest);
+
+ // Check recipient URL.
+ auto_ptr_char recipient(response->getRecipient());
+ const char* recipient2 = httpRequest->getRequestURL();
+ const char* delim = strchr(recipient2, '?');
+ if (!recipient.get() || !*(recipient.get())) {
+ log.error("response missing Recipient attribute");
+ throw BindingException("SAML response did not contain Recipient attribute identifying intended destination.");
}
- catch (XMLToolingException& ex) {
- // Check for an Issuer.
- if (!provider) {
- const vector<Assertion*>& assertions=const_cast<const Response*>(response)->getAssertions();
- if (!assertions.empty() || !metadataProvider ||
- !(provider=metadataProvider->getEntityDescriptor(assertions.front()->getIssuer(), false))) {
- // Just record it.
- auto_ptr_char iname(assertions.front()->getIssuer());
- if (iname.get())
- ex.addProperty("entityID", iname.get());
- throw;
- }
- }
- if (!issuer) {
- pair<bool,int> minor = response->getMinorVersion();
- issuer=provider->getRoleDescriptor(
- *role,
- (minor.first && minor.second==0) ? samlconstants::SAML10_PROTOCOL_ENUM : samlconstants::SAML11_PROTOCOL_ENUM
- );
- }
- if (issuer) annotateException(&ex,issuer); // throws it
- annotateException(&ex,provider); // throws it
+ else if ((delim && strncmp(recipient.get(), recipient2, delim - recipient2)) || (!delim && strcmp(recipient.get(),recipient2))) {
+ log.error("POST targeted at (%s), but delivered to (%s)", recipient.get(), recipient2);
+ throw BindingException("SAML message delivered with POST to incorrect server URL.");
}
-
- xmlObject.release();
- return response;
+
+ return xmlObject.release();
}
projects / shibboleth / cpp-opensaml.git / blobdiff