2 * Copyright 2001-2009 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
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
20 * Base class for logout-related handlers.
24 #include "exceptions.h"
25 #include "Application.h"
26 #include "ServiceProvider.h"
27 #include "SessionCache.h"
28 #include "SPRequest.h"
29 #include "handler/LogoutHandler.h"
30 #include "util/TemplateParameters.h"
33 #include <xmltooling/XMLToolingConfig.h>
34 #include <xmltooling/util/PathResolver.h>
35 #include <xmltooling/util/URLEncoder.h>
37 using namespace shibsp;
38 using namespace xmltooling;
41 LogoutHandler::LogoutHandler() : m_initiator(true)
45 LogoutHandler::~LogoutHandler()
49 pair<bool,long> LogoutHandler::sendLogoutPage(
50 const Application& application, const HTTPRequest& request, HTTPResponse& response, bool local, const char* status
53 const PropertySet* props = application.getPropertySet("Errors");
54 pair<bool,const char*> prop = props ? props->getString(local ? "localLogout" : "globalLogout") : pair<bool,const char*>(false,NULL);
56 response.setContentType("text/html");
57 response.setResponseHeader("Expires","01-Jan-1997 12:00:00 GMT");
58 response.setResponseHeader("Cache-Control","private,no-store,no-cache");
59 string fname(prop.second);
60 ifstream infile(XMLToolingConfig::getConfig().getPathResolver()->resolve(fname, PathResolver::XMLTOOLING_CFG_FILE).c_str());
62 throw ConfigurationException("Unable to access $1 HTML template.", params(1,local ? "localLogout" : "globalLogout"));
63 TemplateParameters tp;
64 tp.m_request = &request;
65 tp.setPropertySet(props);
67 tp.m_map["logoutStatus"] = status;
69 XMLToolingConfig::getConfig().getTemplateEngine()->run(infile, str, tp);
70 return make_pair(true,response.sendResponse(str));
72 prop = application.getString("homeURL");
74 return make_pair(true,response.sendRedirect(prop.second));
76 // No homeURL, so compute a URL to the root of the site.
77 int port = request.getPort();
78 const char* scheme = request.getScheme();
79 string dest = string(scheme) + "://" + request.getHostname();
80 if ((!strcmp(scheme,"http") && port!=80) || (!strcmp(scheme,"https") && port!=443)) {
81 ostringstream portstr;
83 dest += ":" + portstr.str();
86 return make_pair(true,response.sendRedirect(dest.c_str()));
89 pair<bool,long> LogoutHandler::run(SPRequest& request, bool isHandler) const
91 // If we're inside a chain, do nothing.
93 return make_pair(false,0L);
95 // If this isn't a LogoutInitiator, we only "continue" a notification loop, rather than starting one.
96 if (!m_initiator && !request.getParameter("notifying"))
97 return make_pair(false,0L);
99 // Try another front-channel notification. No extra parameters and the session is implicit.
100 return notifyFrontChannel(request.getApplication(), request, request);
103 void LogoutHandler::receive(DDF& in, ostream& out)
106 DDFJanitor jout(ret);
107 if (in["notify"].integer() != 1)
108 throw ListenerException("Unsupported operation.");
111 const char* aid=in["application_id"].string();
112 const Application* app=aid ? SPConfig::getConfig().getServiceProvider()->getApplication(aid) : NULL;
114 // Something's horribly wrong.
115 Category::getInstance(SHIBSP_LOGCAT".Logout").error("couldn't find application (%s) for logout", aid ? aid : "(missing)");
116 throw ConfigurationException("Unable to locate application for logout, deleted?");
119 vector<string> sessions;
120 DDF s = in["sessions"];
121 DDF temp = s.first();
122 while (temp.isstring()) {
123 sessions.push_back(temp.string());
125 if (notifyBackChannel(*app, in["url"].string(), sessions, in["local"].integer()==1))
132 pair<bool,long> LogoutHandler::notifyFrontChannel(
133 const Application& application,
134 const HTTPRequest& request,
135 HTTPResponse& response,
136 const map<string,string>* params
139 // Index of notification point starts at 0.
140 unsigned int index = 0;
141 const char* param = request.getParameter("index");
145 // "return" is a backwards-compatible "eventual destination" to go back to after logout completes.
146 param = request.getParameter("return");
148 // Fetch the next front notification URL and bump the index for the next round trip.
149 string loc = application.getNotificationURL(request.getRequestURL(), true, index++);
151 return make_pair(false,0L);
153 const URLEncoder* encoder = XMLToolingConfig::getConfig().getURLEncoder();
155 // Start with an "action" telling the application what this is about.
156 loc = loc + (strchr(loc.c_str(),'?') ? '&' : '?') + "action=logout";
158 // Now we create a second URL representing the return location back to us.
159 ostringstream locstr;
160 const char* start = request.getRequestURL();
161 const char* end = strchr(start,'?');
162 string tempstr(start, end ? end-start : strlen(start));
164 // Add a signal that we're coming back from notification and the next index.
165 locstr << tempstr << "?notifying=1&index=" << index;
167 // Add return if set.
169 locstr << "&return=" << encoder->encode(param);
171 // We preserve anything we're instructed to directly.
173 for (map<string,string>::const_iterator p = params->begin(); p!=params->end(); ++p)
174 locstr << '&' << p->first << '=' << encoder->encode(p->second.c_str());
177 for (vector<string>::const_iterator q = m_preserve.begin(); q!=m_preserve.end(); ++q) {
178 param = request.getParameter(q->c_str());
180 locstr << '&' << *q << '=' << encoder->encode(param);
184 // Add the notifier's return parameter to the destination location and redirect.
185 // This is NOT the same as the return parameter that might be embedded inside it ;-)
186 loc = loc + "&return=" + encoder->encode(locstr.str().c_str());
187 return make_pair(true,response.sendRedirect(loc.c_str()));
191 #include "util/SPConstants.h"
192 #include <xmltooling/impl/AnyElement.h>
193 #include <xmltooling/soap/SOAP.h>
194 #include <xmltooling/soap/SOAPClient.h>
195 #include <xmltooling/soap/HTTPSOAPTransport.h>
196 using namespace soap11;
198 static const XMLCh LogoutNotification[] = UNICODE_LITERAL_18(L,o,g,o,u,t,N,o,t,i,f,i,c,a,t,i,o,n);
199 static const XMLCh SessionID[] = UNICODE_LITERAL_9(S,e,s,s,i,o,n,I,D);
200 static const XMLCh _type[] = UNICODE_LITERAL_4(t,y,p,e);
201 static const XMLCh _local[] = UNICODE_LITERAL_5(l,o,c,a,l);
202 static const XMLCh _global[] = UNICODE_LITERAL_6(g,l,o,b,a,l);
204 class SHIBSP_DLLLOCAL SOAPNotifier : public soap11::SOAPClient
208 virtual ~SOAPNotifier() {}
210 void prepareTransport(SOAPTransport& transport) {
211 transport.setVerifyHost(false);
212 HTTPSOAPTransport* http = dynamic_cast<HTTPSOAPTransport*>(&transport);
214 http->useChunkedEncoding(false);
215 http->setRequestHeader("User-Agent", PACKAGE_NAME);
216 http->setRequestHeader(PACKAGE_NAME, PACKAGE_VERSION);
223 bool LogoutHandler::notifyBackChannel(
224 const Application& application, const char* requestURL, const vector<string>& sessions, bool local
227 if (sessions.empty()) {
228 Category::getInstance(SHIBSP_LOGCAT".Logout").error("no sessions supplied to back channel notification method");
232 unsigned int index = 0;
233 string endpoint = application.getNotificationURL(requestURL, false, index++);
234 if (endpoint.empty())
237 if (SPConfig::getConfig().isEnabled(SPConfig::OutOfProcess)) {
239 auto_ptr<Envelope> env(EnvelopeBuilder::buildEnvelope());
240 Body* body = BodyBuilder::buildBody();
242 ElementProxy* msg = new AnyElementImpl(shibspconstants::SHIB2SPNOTIFY_NS, LogoutNotification);
243 body->getUnknownXMLObjects().push_back(msg);
244 msg->setAttribute(xmltooling::QName(NULL, _type), local ? _local : _global);
245 for (vector<string>::const_iterator s = sessions.begin(); s!=sessions.end(); ++s) {
246 auto_ptr_XMLCh temp(s->c_str());
247 ElementProxy* child = new AnyElementImpl(shibspconstants::SHIB2SPNOTIFY_NS, SessionID);
248 child->setTextContent(temp.get());
249 msg->getUnknownXMLObjects().push_back(child);
254 while (!endpoint.empty()) {
256 soaper.send(*env.get(), SOAPTransport::Address(application.getId(), application.getId(), endpoint.c_str()));
257 delete soaper.receive();
259 catch (exception& ex) {
260 Category::getInstance(SHIBSP_LOGCAT".Logout").error("error notifying application of logout event: %s", ex.what());
264 endpoint = application.getNotificationURL(requestURL, false, index++);
272 // When not out of process, we remote the back channel work.
273 DDF out,in(m_address.c_str());
274 DDFJanitor jin(in), jout(out);
275 in.addmember("notify").integer(1);
276 in.addmember("application_id").string(application.getId());
277 in.addmember("url").string(requestURL);
279 in.addmember("local").integer(1);
280 DDF s = in.addmember("sessions").list();
281 for (vector<string>::const_iterator i = sessions.begin(); i!=sessions.end(); ++i) {
282 DDF temp = DDF(NULL).string(i->c_str());
285 out=application.getServiceProvider().getListenerService()->send(in);
286 return (out.integer() == 1);