2 * Copyright 2001-2007 Internet2
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
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11 * distributed under the License is distributed on an "AS IS" BASIS,
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13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 * Shib1SessionInitiator.cpp
20 * Shibboleth 1.x AuthnRequest support.
24 #include "Application.h"
25 #include "exceptions.h"
26 #include "ServiceProvider.h"
27 #include "SPRequest.h"
28 #include "handler/AbstractHandler.h"
29 #include "handler/RemotedHandler.h"
30 #include "handler/SessionInitiator.h"
31 #include "util/SPConstants.h"
34 # include <saml/saml2/metadata/Metadata.h>
35 # include <saml/saml2/metadata/EndpointManager.h>
37 #include <xmltooling/XMLToolingConfig.h>
38 #include <xmltooling/util/URLEncoder.h>
40 using namespace shibsp;
41 using namespace opensaml::saml2md;
42 using namespace opensaml;
43 using namespace xmltooling;
48 #if defined (_MSC_VER)
49 #pragma warning( push )
50 #pragma warning( disable : 4250 )
53 class SHIBSP_DLLLOCAL Shib1SessionInitiator : public SessionInitiator, public AbstractHandler, public RemotedHandler
56 Shib1SessionInitiator(const DOMElement* e, const char* appId)
57 : AbstractHandler(e, Category::getInstance(SHIBSP_LOGCAT".SessionInitiator.Shib1")), m_appId(appId) {
58 // If Location isn't set, defer address registration until the setParent call.
59 pair<bool,const char*> loc = getString("Location");
61 string address = m_appId + loc.second + "::run::Shib1SI";
62 setAddress(address.c_str());
65 virtual ~Shib1SessionInitiator() {}
67 void setParent(const PropertySet* parent);
68 void receive(DDF& in, ostream& out);
69 pair<bool,long> run(SPRequest& request, const char* entityID=NULL, bool isHandler=true) const;
72 pair<bool,long> doRequest(
73 const Application& application,
74 HTTPResponse& httpResponse,
76 const char* acsLocation,
82 #if defined (_MSC_VER)
83 #pragma warning( pop )
86 SessionInitiator* SHIBSP_DLLLOCAL Shib1SessionInitiatorFactory(const pair<const DOMElement*,const char*>& p)
88 return new Shib1SessionInitiator(p.first, p.second);
93 void Shib1SessionInitiator::setParent(const PropertySet* parent)
95 DOMPropertySet::setParent(parent);
96 pair<bool,const char*> loc = getString("Location");
98 string address = m_appId + loc.second + "::run::Shib1SI";
99 setAddress(address.c_str());
102 m_log.warn("no Location property in Shib1 SessionInitiator (or parent), can't register as remoted handler");
106 pair<bool,long> Shib1SessionInitiator::run(SPRequest& request, const char* entityID, bool isHandler) const
108 // We have to know the IdP to function.
109 if (!entityID || !*entityID)
110 return make_pair(false,0L);
113 const Handler* ACS=NULL;
115 const Application& app=request.getApplication();
118 option=request.getParameter("acsIndex");
120 ACS = app.getAssertionConsumerServiceByIndex(atoi(option));
122 request.log(SPRequest::SPWarn, "invalid acsIndex specified in request, using default ACS location");
125 option = request.getParameter("target");
129 // Since we're passing the ACS by value, we need to compute the return URL,
130 // so we'll need the target resource for real.
131 recoverRelayState(request.getApplication(), request, target, false);
134 // We're running as a "virtual handler" from within the filter.
135 // The target resource is the current one and everything else is defaulted.
136 target=request.getRequestURL();
139 // Since we're not passing by index, we need to fully compute the return URL.
141 pair<bool,unsigned int> index = getUnsignedInt("defaultACSIndex");
143 ACS = app.getAssertionConsumerServiceByIndex(index.second);
145 request.log(SPRequest::SPWarn, "invalid defaultACSIndex, using default ACS location");
148 ACS = app.getDefaultAssertionConsumerService();
151 // Compute the ACS URL. We add the ACS location to the base handlerURL.
152 string ACSloc=request.getHandlerURL(target.c_str());
153 pair<bool,const char*> loc=ACS ? ACS->getString("Location") : pair<bool,const char*>(false,NULL);
154 if (loc.first) ACSloc+=loc.second;
157 // We may already have RelayState set if we looped back here,
158 // but just in case target is a resource, we reset it back.
160 option = request.getParameter("target");
165 m_log.debug("attempting to initiate session using Shibboleth with provider (%s)", entityID);
167 if (SPConfig::getConfig().isEnabled(SPConfig::OutOfProcess))
168 return doRequest(app, request, entityID, ACSloc.c_str(), target);
171 DDF out,in = DDF(m_address.c_str()).structure();
172 DDFJanitor jin(in), jout(out);
173 in.addmember("application_id").string(app.getId());
174 in.addmember("entity_id").string(entityID);
175 in.addmember("acsLocation").string(ACSloc.c_str());
177 in.addmember("RelayState").string(target.c_str());
179 // Remote the processing.
180 out = request.getServiceProvider().getListenerService()->send(in);
181 return unwrap(request, out);
184 void Shib1SessionInitiator::receive(DDF& in, ostream& out)
187 const char* aid=in["application_id"].string();
188 const Application* app=aid ? SPConfig::getConfig().getServiceProvider()->getApplication(aid) : NULL;
190 // Something's horribly wrong.
191 m_log.error("couldn't find application (%s) to generate AuthnRequest", aid ? aid : "(missing)");
192 throw ConfigurationException("Unable to locate application for new session, deleted?");
195 const char* entityID = in["entity_id"].string();
196 const char* acsLocation = in["acsLocation"].string();
197 if (!entityID || !acsLocation)
198 throw ConfigurationException("No entityID or acsLocation parameter supplied to remoted SessionInitiator.");
201 DDFJanitor jout(ret);
203 // Wrap the outgoing object with a Response facade.
204 auto_ptr<HTTPResponse> http(getResponse(ret));
206 string relayState(in["RelayState"].string() ? in["RelayState"].string() : "");
208 // Since we're remoted, the result should either be a throw, which we pass on,
209 // a false/0 return, which we just return as an empty structure, or a response/redirect,
210 // which we capture in the facade and send back.
211 doRequest(*app, *http.get(), entityID, acsLocation, relayState);
215 pair<bool,long> Shib1SessionInitiator::doRequest(
216 const Application& app,
217 HTTPResponse& httpResponse,
218 const char* entityID,
219 const char* acsLocation,
224 // Use metadata to invoke the SSO service directly.
225 MetadataProvider* m=app.getMetadataProvider();
227 MetadataProvider::Criteria mc(entityID, &IDPSSODescriptor::ELEMENT_QNAME, shibspconstants::SHIB1_PROTOCOL_ENUM);
228 pair<const EntityDescriptor*,const RoleDescriptor*> entity = m->getEntityDescriptor(mc);
230 m_log.error("unable to locate metadata for provider (%s)", entityID);
231 throw MetadataException("Unable to locate metadata for identity provider ($entityID)", namedparams(1, "entityID", entityID));
233 else if (!entity.second) {
234 m_log.error("unable to locate Shibboleth-aware identity provider role for provider (%s)", entityID);
235 return make_pair(false,0L);
237 const EndpointType* ep=EndpointManager<SingleSignOnService>(
238 dynamic_cast<const IDPSSODescriptor*>(entity.second)->getSingleSignOnServices()
239 ).getByBinding(shibspconstants::SHIB1_AUTHNREQUEST_PROFILE_URI);
241 m_log.error("unable to locate compatible SSO service for provider (%s)", entityID);
242 return make_pair(false,0L);
245 preserveRelayState(app, httpResponse, relayState);
247 // Shib 1.x requires a target value.
248 if (relayState.empty())
249 relayState = "default";
252 sprintf(timebuf,"%lu",time(NULL));
253 const URLEncoder* urlenc = XMLToolingConfig::getConfig().getURLEncoder();
254 auto_ptr_char dest(ep->getLocation());
255 string req=string(dest.get()) + (strchr(dest.get(),'?') ? '&' : '?') + "shire=" + urlenc->encode(acsLocation) +
256 "&time=" + timebuf + "&target=" + urlenc->encode(relayState.c_str()) +
257 "&providerId=" + urlenc->encode(app.getString("entityID").second);
259 return make_pair(true, httpResponse.sendRedirect(req.c_str()));
261 return make_pair(false,0L);