2 * Copyright 2001-2005 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.
17 /* nsapi_shib.cpp - Shibboleth NSAPI filter
23 #include "config_win32.h"
26 #include <saml/saml.h>
27 #include <shib/shib.h>
28 #include <shib/shib-threads.h>
29 #include <shib-target/shib-target.h>
53 using namespace shibboleth;
54 using namespace shibtarget;
56 // macros to output text to client
57 #define NET_WRITE(str) \
58 if (IO_ERROR==net_write(sn->csd,str,strlen(str))) return REQ_EXIT
61 ShibTargetConfig* g_Config=NULL;
63 string g_ServerScheme;
66 PlugManager::Factory SunRequestMapFactory;
68 extern "C" NSAPI_PUBLIC void nsapi_shib_exit(void*)
75 extern "C" NSAPI_PUBLIC int nsapi_shib_init(pblock* pb, Session* sn, Request* rq)
77 // Save off a default hostname for this virtual server.
78 char* name=pblock_findval("server-name",pb);
92 pblock_nvinsert("error","unable to determine web server hostname",pb);
97 name=pblock_findval("server-scheme",pb);
101 log_error(LOG_INFORM,"nsapi_shib_init",sn,rq,"nsapi_shib loaded for host (%s)",g_ServerName.c_str());
106 const char* schemadir=pblock_findval("shib-schemas",pb);
108 schemadir=getenv("SHIBSCHEMAS");
110 schemadir=SHIB_SCHEMAS;
111 const char* config=pblock_findval("shib-config",pb);
113 config=getenv("SHIBCONFIG");
116 g_Config=&ShibTargetConfig::getConfig();
117 g_Config->setFeatures(
118 ShibTargetConfig::Listener |
119 ShibTargetConfig::Metadata |
120 ShibTargetConfig::AAP |
121 ShibTargetConfig::RequestMapper |
122 ShibTargetConfig::LocalExtensions |
123 ShibTargetConfig::Logging
125 if (!g_Config->init(schemadir)) {
127 pblock_nvinsert("error","unable to initialize Shibboleth libraries",pb);
131 SAMLConfig::getConfig().getPlugMgr().regFactory(shibtarget::XML::NativeRequestMapType,&SunRequestMapFactory);
132 // We hijack the legacy type so that 1.2 config files will load this plugin
133 SAMLConfig::getConfig().getPlugMgr().regFactory(shibtarget::XML::LegacyRequestMapType,&SunRequestMapFactory);
135 if (!g_Config->load(config)) {
137 pblock_nvinsert("error","unable to initialize load Shibboleth configuration",pb);
141 daemon_atrestart(nsapi_shib_exit,NULL);
146 pblock_nvinsert("error","caught exception, unable to initialize Shibboleth libraries",pb);
153 /********************************************************************************/
154 // NSAPI Shib Target Subclass
156 class ShibTargetNSAPI : public ShibTarget
159 ShibTargetNSAPI(pblock* pb, Session* sn, Request* rq) {
164 // Get everything but hostname...
165 const char* uri=pblock_findval("uri", rq->reqpb);
166 const char* qstr=pblock_findval("query", rq->reqpb);
167 int port=server_portnum;
168 const char* scheme=security_active ? "https" : "http";
169 const char* host=NULL;
175 url=url + '?' + qstr;
177 #ifdef vs_is_default_vs
178 // This is 6.0 or later, so we can distinguish requests to name-based vhosts.
179 if (!vs_is_default_vs)
180 // The beauty here is, a non-default vhost can *only* be accessed if the client
181 // specified the exact name in the Host header. So we can trust the Host header.
182 host=pblock_findval("host", rq->headers);
185 // In other cases, we're going to rely on the initialization process...
186 host=g_ServerName.c_str();
188 char* content_type = "";
189 request_header("content-type", &content_type, sn, rq);
191 const char *remote_ip = pblock_findval("ip", sn->client);
192 const char *method = pblock_findval("method", rq->reqpb);
194 init(scheme, host, port, url.c_str(), content_type, remote_ip, method);
196 ~ShibTargetNSAPI() {}
198 virtual void log(ShibLogLevel level, const string &msg) {
199 ShibTarget::log(level,msg);
200 if (level==LogLevelError)
201 log_error(LOG_FAILURE, "nsapi_shib", m_sn, m_rq, const_cast<char*>(msg.c_str()));
203 virtual string getCookies(void) const {
204 char *cookies = NULL;
205 if (request_header("cookie", &cookies, m_sn, m_rq) == REQ_ABORTED)
206 throw("error accessing cookie header");
207 return string(cookies ? cookies : "");
209 virtual void setCookie(const string &name, const string &value) {
210 string cookie = name + '=' + value;
211 pblock_nvinsert("Set-Cookie", cookie.c_str(), m_rq->srvhdrs);
213 virtual string getArgs(void) {
214 const char *q = pblock_findval("query", m_rq->reqpb);
215 return string(q ? q : "");
217 virtual string getPostData(void) {
218 char* content_length=NULL;
219 if (request_header("content-length", &content_length, m_sn, m_rq)!=REQ_PROCEED ||
220 atoi(content_length) > 1024*1024) // 1MB?
221 throw FatalProfileException("Blocked too-large a submission to profile endpoint.");
224 int cl=atoi(content_length);
226 while (cl && ch != IO_EOF) {
227 ch=netbuf_getc(m_sn->inbuf);
236 throw FatalProfileException("Error reading profile submission from browser.");
240 virtual void clearHeader(const string &name) {
241 param_free(pblock_remove(name.c_str(), m_rq->headers));
243 virtual void setHeader(const string &name, const string &value) {
244 pblock_nvinsert(name.c_str(), value.c_str() ,m_rq->headers);
246 virtual string getHeader(const string &name) {
248 if (request_header(const_cast<char*>(name.c_str()), &hdr, m_sn, m_rq) != REQ_PROCEED)
250 return string(hdr ? hdr : "");
252 virtual void setRemoteUser(const string &user) {
253 pblock_nvinsert("remote-user", user.c_str(), m_rq->headers);
254 pblock_nvinsert("auth-user", user.c_str(), m_rq->vars);
256 virtual string getRemoteUser(void) {
257 return getHeader("remote-user");
260 virtual void* sendPage(
263 const string& content_type="text/html",
264 const saml::Iterator<header_t>& headers=EMPTY(header_t)
266 param_free(pblock_remove("content-type", m_rq->srvhdrs));
267 pblock_nvinsert("content-type", content_type.c_str(), m_rq->srvhdrs);
268 pblock_nninsert("content-length", msg.length(), m_rq->srvhdrs);
269 pblock_nvinsert("connection","close",m_rq->srvhdrs);
270 while (headers.hasNext()) {
271 const header_t& h=headers.next();
272 pblock_nvinsert(h.first.c_str(), h.second.c_str(), m_rq->srvhdrs);
274 protocol_status(m_sn, m_rq, code, NULL);
275 protocol_start_response(m_sn, m_rq);
276 net_write(m_sn->csd,const_cast<char*>(msg.c_str()),msg.length());
277 return (void*)REQ_EXIT;
279 virtual void* sendRedirect(const string& url) {
280 param_free(pblock_remove("content-type", m_rq->srvhdrs));
281 pblock_nninsert("content-length", 0, m_rq->srvhdrs);
282 pblock_nvinsert("expires", "01-Jan-1997 12:00:00 GMT", m_rq->srvhdrs);
283 pblock_nvinsert("cache-control", "private,no-store,no-cache", m_rq->srvhdrs);
284 pblock_nvinsert("location", url.c_str(), m_rq->srvhdrs);
285 protocol_status(m_sn, m_rq, PROTOCOL_REDIRECT, NULL);
286 protocol_start_response(m_sn, m_rq);
287 return (void*)REQ_ABORTED;
289 virtual void* returnDecline(void) { return (void*)REQ_NOACTION; }
290 virtual void* returnOK(void) { return (void*)REQ_PROCEED; }
297 /********************************************************************************/
299 int WriteClientError(Session* sn, Request* rq, char* func, char* msg)
301 log_error(LOG_FAILURE,func,sn,rq,msg);
302 protocol_status(sn,rq,PROTOCOL_SERVER_ERROR,msg);
307 #define FUNC "shibboleth"
308 extern "C" NSAPI_PUBLIC int nsapi_shib(pblock* pb, Session* sn, Request* rq)
310 ostringstream threadid;
311 threadid << "[" << getpid() << "] nsapi_shib" << '\0';
312 saml::NDC ndc(threadid.str().c_str());
315 ShibTargetNSAPI stn(pb, sn, rq);
317 // Check user authentication
318 pair<bool,void*> res = stn.doCheckAuthN();
319 if (res.first) return (int)res.second;
321 // user authN was okay -- export the assertions now
322 param_free(pblock_remove("auth-user",rq->vars));
323 // This seems to be required in order to eventually set
324 // the auth-user var.
325 pblock_nvinsert("auth-type","shibboleth",rq->vars);
326 res = stn.doExportAssertions();
327 if (res.first) return (int)res.second;
329 // Check the Authorization
330 res = stn.doCheckAuthZ();
331 if (res.first) return (int)res.second;
336 catch (SAMLException& e) {
337 log_error(LOG_FAILURE,FUNC,sn,rq,const_cast<char*>(e.what()));
338 return WriteClientError(sn, rq, FUNC, "Shibboleth filter threw an exception, see web server log for error.");
342 return WriteClientError(sn, rq, FUNC, "Shibboleth filter threw an uncaught exception.");
349 #define FUNC "shib_handler"
350 extern "C" NSAPI_PUBLIC int shib_handler(pblock* pb, Session* sn, Request* rq)
352 ostringstream threadid;
353 threadid << "[" << getpid() << "] shib_handler" << '\0';
354 saml::NDC ndc(threadid.str().c_str());
357 ShibTargetNSAPI stn(pb, sn, rq);
359 pair<bool,void*> res = stn.doHandler();
360 if (res.first) return (int)res.second;
362 return WriteClientError(sn, rq, FUNC, "Shibboleth handler did not do anything.");
364 catch (SAMLException& e) {
365 log_error(LOG_FAILURE,FUNC,sn,rq,const_cast<char*>(e.what()));
366 return WriteClientError(sn, rq, FUNC, "Shibboleth handler threw an exception, see web server log for error.");
370 return WriteClientError(sn, rq, FUNC, "Shibboleth handler threw an unknown exception.");
376 class SunRequestMapper : public virtual IRequestMapper, public virtual IPropertySet
379 SunRequestMapper(const DOMElement* e);
380 ~SunRequestMapper() { delete m_mapper; delete m_stKey; delete m_propsKey; }
381 void lock() { m_mapper->lock(); }
382 void unlock() { m_stKey->setData(NULL); m_propsKey->setData(NULL); m_mapper->unlock(); }
383 Settings getSettings(ShibTarget* st) const;
385 pair<bool,bool> getBool(const char* name, const char* ns=NULL) const;
386 pair<bool,const char*> getString(const char* name, const char* ns=NULL) const;
387 pair<bool,const XMLCh*> getXMLString(const char* name, const char* ns=NULL) const;
388 pair<bool,unsigned int> getUnsignedInt(const char* name, const char* ns=NULL) const;
389 pair<bool,int> getInt(const char* name, const char* ns=NULL) const;
390 const IPropertySet* getPropertySet(const char* name, const char* ns="urn:mace:shibboleth:target:config:1.0") const;
391 const DOMElement* getElement() const;
394 IRequestMapper* m_mapper;
396 ThreadKey* m_propsKey;
399 IPlugIn* SunRequestMapFactory(const DOMElement* e)
401 return new SunRequestMapper(e);
404 SunRequestMapper::SunRequestMapper(const DOMElement* e) : m_mapper(NULL), m_stKey(NULL), m_propsKey(NULL)
406 IPlugIn* p=SAMLConfig::getConfig().getPlugMgr().newPlugin(shibtarget::XML::XMLRequestMapType,e);
407 m_mapper=dynamic_cast<IRequestMapper*>(p);
410 throw UnsupportedExtensionException("Embedded request mapper plugin was not of correct type.");
412 m_stKey=ThreadKey::create(NULL);
413 m_propsKey=ThreadKey::create(NULL);
416 IRequestMapper::Settings SunRequestMapper::getSettings(ShibTarget* st) const
418 Settings s=m_mapper->getSettings(st);
419 m_stKey->setData(dynamic_cast<ShibTargetNSAPI*>(st));
420 m_propsKey->setData((void*)s.first);
421 return pair<const IPropertySet*,IAccessControl*>(this,s.second);
424 pair<bool,bool> SunRequestMapper::getBool(const char* name, const char* ns) const
426 ShibTargetNSAPI* stn=reinterpret_cast<ShibTargetNSAPI*>(m_stKey->getData());
427 const IPropertySet* s=reinterpret_cast<const IPropertySet*>(m_propsKey->getData());
428 if (stn && !ns && name) {
429 // Override boolean properties.
430 const char* param=pblock_findval(name,stn->m_pb);
431 if (param && (!strcmp(param,"1") || !strcasecmp(param,"true")))
432 return make_pair(true,true);
434 return s ? s->getBool(name,ns) : make_pair(false,false);
437 pair<bool,const char*> SunRequestMapper::getString(const char* name, const char* ns) const
439 ShibTargetNSAPI* stn=reinterpret_cast<ShibTargetNSAPI*>(m_stKey->getData());
440 const IPropertySet* s=reinterpret_cast<const IPropertySet*>(m_propsKey->getData());
441 if (stn && !ns && name) {
442 // Override string properties.
443 if (!strcmp(name,"authType"))
444 return pair<bool,const char*>(true,"shibboleth");
446 const char* param=pblock_findval(name,stn->m_pb);
448 return make_pair(true,param);
451 return s ? s->getString(name,ns) : pair<bool,const char*>(false,NULL);
454 pair<bool,const XMLCh*> SunRequestMapper::getXMLString(const char* name, const char* ns) const
456 const IPropertySet* s=reinterpret_cast<const IPropertySet*>(m_propsKey->getData());
457 return s ? s->getXMLString(name,ns) : pair<bool,const XMLCh*>(false,NULL);
460 pair<bool,unsigned int> SunRequestMapper::getUnsignedInt(const char* name, const char* ns) const
462 const IPropertySet* s=reinterpret_cast<const IPropertySet*>(m_propsKey->getData());
463 return s ? s->getUnsignedInt(name,ns) : pair<bool,unsigned int>(false,0);
466 pair<bool,int> SunRequestMapper::getInt(const char* name, const char* ns) const
468 const IPropertySet* s=reinterpret_cast<const IPropertySet*>(m_propsKey->getData());
469 return s ? s->getInt(name,ns) : pair<bool,int>(false,0);
472 const IPropertySet* SunRequestMapper::getPropertySet(const char* name, const char* ns) const
474 const IPropertySet* s=reinterpret_cast<const IPropertySet*>(m_propsKey->getData());
475 return s ? s->getPropertySet(name,ns) : NULL;
478 const DOMElement* SunRequestMapper::getElement() const
480 const IPropertySet* s=reinterpret_cast<const IPropertySet*>(m_propsKey->getData());
481 return s ? s->getElement() : NULL;