2 * Licensed to the University Corporation for Advanced Internet
3 * Development, Inc. (UCAID) under one or more contributor license
4 * agreements. See the NOTICE file distributed with this work for
5 * additional information regarding copyright ownership.
7 * UCAID licenses this file to you under the Apache License,
8 * Version 2.0 (the "License"); you may not use this file except
9 * in compliance with the License. You may obtain a copy of the
12 * http://www.apache.org/licenses/LICENSE-2.0
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
17 * either express or implied. See the License for the specific
18 * language governing permissions and limitations under the License.
24 * Apache module implementation.
30 #undef _XOPEN_SOURCE // causes gethostname conflict in unistd.h
34 # define _CRT_NONSTDC_NO_DEPRECATE 1
35 # define _CRT_SECURE_NO_DEPRECATE 1
38 #include <shibsp/exceptions.h>
39 #include <shibsp/AbstractSPRequest.h>
40 #include <shibsp/AccessControl.h>
41 #include <shibsp/GSSRequest.h>
42 #include <shibsp/RequestMapper.h>
43 #include <shibsp/SPConfig.h>
44 #include <shibsp/ServiceProvider.h>
45 #include <shibsp/SessionCache.h>
46 #include <shibsp/attribute/Attribute.h>
48 #include <xercesc/util/XMLUniDefs.hpp>
49 #include <xercesc/util/regx/RegularExpression.hpp>
50 #include <xmltooling/XMLToolingConfig.h>
51 #include <xmltooling/util/NDC.h>
52 #include <xmltooling/util/ParserPool.h>
53 #include <xmltooling/util/Threads.h>
54 #include <xmltooling/util/XMLConstants.h>
55 #include <xmltooling/util/XMLHelper.h>
63 // Apache specific header files
65 #include <http_config.h>
66 #include <http_protocol.h>
67 #include <http_main.h>
69 #include <http_core.h>
71 #include <http_request.h>
73 #ifndef SHIB_APACHE_13
74 #include <apr_buckets.h>
75 #include <apr_strings.h>
76 #include <apr_pools.h>
87 #include <unistd.h> // for getpid()
90 using namespace shibsp;
91 using namespace xmltooling;
93 using xercesc::RegularExpression;
94 using xercesc::XMLException;
96 extern "C" module MODULE_VAR_EXPORT mod_shib;
99 char* g_szSHIBConfig = nullptr;
100 char* g_szSchemaDir = nullptr;
101 char* g_szPrefix = nullptr;
102 SPConfig* g_Config = nullptr;
103 string g_unsetHeaderValue,g_spoofKey;
104 bool g_checkSpoofing = true;
105 bool g_catchAll = false;
106 #ifndef SHIB_APACHE_13
107 char* g_szGSSContextKey = "mod_auth_gssapi:gss_ctx";
109 static const char* g_UserDataKey = "urn:mace:shibboleth:Apache:shib_check_user";
112 /* Apache 2.2.x headers must be accumulated and set in the output filter.
113 Apache 2.0.49+ supports the filter method.
114 Apache 1.3.x and lesser 2.0.x must write the headers directly. */
116 #if (defined(SHIB_APACHE_20) || defined(SHIB_APACHE_22)) && AP_MODULE_MAGIC_AT_LEAST(20020903,6)
117 #define SHIB_DEFERRED_HEADERS
120 /********************************************************************************/
121 // Basic Apache Configuration code.
124 // per-server module configuration structure
125 struct shib_server_config
130 // creates the per-server configuration
131 extern "C" void* create_shib_server_config(SH_AP_POOL* p, server_rec* s)
133 shib_server_config* sc=(shib_server_config*)ap_pcalloc(p,sizeof(shib_server_config));
134 sc->szScheme = nullptr;
138 // overrides server configuration in virtual servers
139 extern "C" void* merge_shib_server_config (SH_AP_POOL* p, void* base, void* sub)
141 shib_server_config* sc=(shib_server_config*)ap_pcalloc(p,sizeof(shib_server_config));
142 shib_server_config* parent=(shib_server_config*)base;
143 shib_server_config* child=(shib_server_config*)sub;
146 sc->szScheme=ap_pstrdup(p,child->szScheme);
147 else if (parent->szScheme)
148 sc->szScheme=ap_pstrdup(p,parent->szScheme);
150 sc->szScheme=nullptr;
155 // per-dir module configuration structure
156 struct shib_dir_config
158 SH_AP_TABLE* tSettings; // generic table of extensible settings
161 char* szAuthGrpFile; // Auth GroupFile name
162 int bRequireAll; // all "known" require directives must match, otherwise OR logic
163 int bAuthoritative; // allow htaccess plugin to DECLINE when authz fails
165 // Content Configuration
166 char* szApplicationId; // Shib applicationId value
167 char* szRequireWith; // require a session using a specific initiator?
168 char* szRedirectToSSL; // redirect non-SSL requests to SSL port
169 char* szAccessControl; // path to "external" AccessControl plugin file
170 int bOff; // flat-out disable all Shib processing
171 int bBasicHijack; // activate for AuthType Basic?
172 int bRequireSession; // require a session?
173 int bExportAssertion; // export SAML assertion to the environment?
174 int bUseEnvVars; // use environment?
175 int bUseHeaders; // use headers?
178 // creates per-directory config structure
179 extern "C" void* create_shib_dir_config (SH_AP_POOL* p, char* d)
181 shib_dir_config* dc=(shib_dir_config*)ap_pcalloc(p,sizeof(shib_dir_config));
182 dc->tSettings = nullptr;
183 dc->szAuthGrpFile = nullptr;
184 dc->bRequireAll = -1;
185 dc->bAuthoritative = -1;
186 dc->szApplicationId = nullptr;
187 dc->szRequireWith = nullptr;
188 dc->szRedirectToSSL = nullptr;
189 dc->szAccessControl = nullptr;
191 dc->bBasicHijack = -1;
192 dc->bRequireSession = -1;
193 dc->bExportAssertion = -1;
194 dc->bUseEnvVars = -1;
195 dc->bUseHeaders = -1;
199 // overrides server configuration in directories
200 extern "C" void* merge_shib_dir_config (SH_AP_POOL* p, void* base, void* sub)
202 shib_dir_config* dc=(shib_dir_config*)ap_pcalloc(p,sizeof(shib_dir_config));
203 shib_dir_config* parent=(shib_dir_config*)base;
204 shib_dir_config* child=(shib_dir_config*)sub;
206 // The child supersedes any matching table settings in the parent.
207 dc->tSettings = nullptr;
208 if (parent->tSettings)
209 dc->tSettings = ap_copy_table(p, parent->tSettings);
210 if (child->tSettings) {
212 ap_overlap_tables(dc->tSettings, child->tSettings, AP_OVERLAP_TABLES_SET);
214 dc->tSettings = ap_copy_table(p, child->tSettings);
217 if (child->szAuthGrpFile)
218 dc->szAuthGrpFile=ap_pstrdup(p,child->szAuthGrpFile);
219 else if (parent->szAuthGrpFile)
220 dc->szAuthGrpFile=ap_pstrdup(p,parent->szAuthGrpFile);
222 dc->szAuthGrpFile=nullptr;
224 if (child->szApplicationId)
225 dc->szApplicationId=ap_pstrdup(p,child->szApplicationId);
226 else if (parent->szApplicationId)
227 dc->szApplicationId=ap_pstrdup(p,parent->szApplicationId);
229 dc->szApplicationId=nullptr;
231 if (child->szRequireWith)
232 dc->szRequireWith=ap_pstrdup(p,child->szRequireWith);
233 else if (parent->szRequireWith)
234 dc->szRequireWith=ap_pstrdup(p,parent->szRequireWith);
236 dc->szRequireWith=nullptr;
238 if (child->szRedirectToSSL)
239 dc->szRedirectToSSL=ap_pstrdup(p,child->szRedirectToSSL);
240 else if (parent->szRedirectToSSL)
241 dc->szRedirectToSSL=ap_pstrdup(p,parent->szRedirectToSSL);
243 dc->szRedirectToSSL=nullptr;
245 if (child->szAccessControl)
246 dc->szAccessControl=ap_pstrdup(p,child->szAccessControl);
247 else if (parent->szAccessControl)
248 dc->szAccessControl=ap_pstrdup(p,parent->szAccessControl);
250 dc->szAccessControl=nullptr;
252 dc->bOff=((child->bOff==-1) ? parent->bOff : child->bOff);
253 dc->bBasicHijack=((child->bBasicHijack==-1) ? parent->bBasicHijack : child->bBasicHijack);
254 dc->bRequireSession=((child->bRequireSession==-1) ? parent->bRequireSession : child->bRequireSession);
255 dc->bExportAssertion=((child->bExportAssertion==-1) ? parent->bExportAssertion : child->bExportAssertion);
256 dc->bRequireAll=((child->bRequireAll==-1) ? parent->bRequireAll : child->bRequireAll);
257 dc->bAuthoritative=((child->bAuthoritative==-1) ? parent->bAuthoritative : child->bAuthoritative);
258 dc->bUseEnvVars=((child->bUseEnvVars==-1) ? parent->bUseEnvVars : child->bUseEnvVars);
259 dc->bUseHeaders=((child->bUseHeaders==-1) ? parent->bUseHeaders : child->bUseHeaders);
263 // per-request module structure
264 struct shib_request_config
266 SH_AP_TABLE *env; // environment vars
267 #ifdef SHIB_DEFERRED_HEADERS
268 SH_AP_TABLE *hdr_out; // headers to browser
272 // create a request record
273 static shib_request_config *init_request_config(request_rec *r)
275 shib_request_config* rc=(shib_request_config*)ap_pcalloc(r->pool,sizeof(shib_request_config));
276 ap_set_module_config (r->request_config, &mod_shib, rc);
277 memset(rc, 0, sizeof(shib_request_config));
278 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_init_rc");
282 // generic global slot handlers
283 extern "C" const char* ap_set_global_string_slot(cmd_parms* parms, void*, const char* arg)
285 *((char**)(parms->info))=ap_pstrdup(parms->pool,arg);
289 extern "C" const char* shib_set_server_string_slot(cmd_parms* parms, void*, const char* arg)
291 char* base=(char*)ap_get_module_config(parms->server->module_config,&mod_shib);
292 size_t offset=(size_t)parms->info;
293 *((char**)(base + offset))=ap_pstrdup(parms->pool,arg);
297 extern "C" const char* shib_ap_set_file_slot(cmd_parms* parms,
298 #ifdef SHIB_APACHE_13
299 char* arg1, char* arg2
301 void* arg1, const char* arg2
305 ap_set_file_slot(parms, arg1, arg2);
309 extern "C" const char* shib_table_set(cmd_parms* parms, shib_dir_config* dc, const char* arg1, const char* arg2)
312 dc->tSettings = ap_make_table(parms->pool, 4);
313 ap_table_set(dc->tSettings, arg1, arg2);
318 class ShibTargetApache : public AbstractSPRequest
319 #if defined(SHIBSP_HAVE_GSSAPI) && !defined(SHIB_APACHE_13)
324 mutable string m_body;
325 mutable bool m_gotBody,m_firsttime;
326 mutable vector<string> m_certs;
327 set<string> m_allhttp;
331 shib_dir_config* m_dc;
332 shib_server_config* m_sc;
333 shib_request_config* m_rc;
335 ShibTargetApache(request_rec* req, bool handler, bool shib_check_user)
336 : AbstractSPRequest(SHIBSP_LOGCAT".Apache"), m_handler(handler), m_gotBody(false),m_firsttime(true) {
337 m_sc = (shib_server_config*)ap_get_module_config(req->server->module_config, &mod_shib);
338 m_dc = (shib_dir_config*)ap_get_module_config(req->per_dir_config, &mod_shib);
339 m_rc = (shib_request_config*)ap_get_module_config(req->request_config, &mod_shib);
342 setRequestURI(m_req->unparsed_uri);
344 if (shib_check_user && m_dc->bUseHeaders == 1) {
345 // Try and see if this request was already processed, to skip spoof checking.
346 if (!ap_is_initial_req(m_req)) {
349 else if (!g_spoofKey.empty()) {
350 const char* hdr = ap_table_get(m_req->headers_in, "Shib-Spoof-Check");
351 if (hdr && g_spoofKey == hdr)
356 log(SPDebug, "shib_check_user running more than once");
359 virtual ~ShibTargetApache() {}
361 const char* getScheme() const {
362 return m_sc->szScheme ? m_sc->szScheme : ap_http_method(m_req);
364 bool isSecure() const {
365 return HTTPRequest::isSecure();
367 const char* getHostname() const {
368 return ap_get_server_name(m_req);
370 int getPort() const {
371 return ap_get_server_port(m_req);
373 const char* getMethod() const {
374 return m_req->method;
376 string getContentType() const {
377 const char* type = ap_table_get(m_req->headers_in, "Content-Type");
378 return type ? type : "";
380 long getContentLength() const {
381 return m_gotBody ? m_body.length() : m_req->remaining;
383 string getRemoteAddr() const {
384 string ret = AbstractSPRequest::getRemoteAddr();
385 return ret.empty() ? m_req->connection->remote_ip : ret;
387 void log(SPLogLevel level, const string& msg) const {
388 AbstractSPRequest::log(level,msg);
391 (level == SPDebug ? APLOG_DEBUG :
392 (level == SPInfo ? APLOG_INFO :
393 (level == SPWarn ? APLOG_WARNING :
394 (level == SPError ? APLOG_ERR : APLOG_CRIT))))|APLOG_NOERRNO,
400 const char* getQueryString() const { return m_req->args; }
401 const char* getRequestBody() const {
402 if (m_gotBody || m_req->method_number==M_GET)
403 return m_body.c_str();
404 #ifdef SHIB_APACHE_13
405 // Read the posted data
406 if (ap_setup_client_block(m_req, REQUEST_CHUNKED_DECHUNK) != OK) {
408 log(SPError, "Apache function (setup_client_block) failed while reading request body.");
409 return m_body.c_str();
411 if (!ap_should_client_block(m_req)) {
413 log(SPError, "Apache function (should_client_block) failed while reading request body.");
414 return m_body.c_str();
416 if (m_req->remaining > 1024*1024)
417 throw opensaml::SecurityPolicyException("Blocked request body larger than 1M size limit.");
420 char buff[HUGE_STRING_LEN];
421 ap_hard_timeout("[mod_shib] getRequestBody", m_req);
422 while ((len=ap_get_client_block(m_req, buff, sizeof(buff))) > 0) {
423 ap_reset_timeout(m_req);
424 m_body.append(buff, len);
426 ap_kill_timeout(m_req);
431 apr_bucket_brigade* bb = apr_brigade_create(m_req->pool, m_req->connection->bucket_alloc);
434 apr_status_t rv = ap_get_brigade(m_req->input_filters, bb, AP_MODE_READBYTES, APR_BLOCK_READ, HUGE_STRING_LEN);
435 if (rv != APR_SUCCESS) {
436 log(SPError, "Apache function (ap_get_brigade) failed while reading request body.");
440 for (bucket = APR_BRIGADE_FIRST(bb); bucket != APR_BRIGADE_SENTINEL(bb); bucket = APR_BUCKET_NEXT(bucket)) {
441 if (APR_BUCKET_IS_EOS(bucket)) {
446 /* We can't do much with this. */
447 if (APR_BUCKET_IS_FLUSH(bucket))
451 apr_bucket_read(bucket, &data, &len, APR_BLOCK_READ);
453 m_body.append(data, len);
455 apr_brigade_cleanup(bb);
457 apr_brigade_destroy(bb);
460 return m_body.c_str();
462 const char* getParameter(const char* name) const {
463 return AbstractSPRequest::getParameter(name);
465 vector<const char*>::size_type getParameters(const char* name, vector<const char*>& values) const {
466 return AbstractSPRequest::getParameters(name, values);
468 void clearHeader(const char* rawname, const char* cginame) {
469 if (m_dc->bUseHeaders == 1) {
470 // ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(m_req), "shib_clear_header: hdr\n");
471 if (g_checkSpoofing && m_firsttime) {
472 if (m_allhttp.empty()) {
473 // First time, so populate set with "CGI" versions of client-supplied headers.
474 #ifdef SHIB_APACHE_13
475 array_header *hdrs_arr = ap_table_elts(m_req->headers_in);
476 table_entry *hdrs = (table_entry *) hdrs_arr->elts;
478 const apr_array_header_t *hdrs_arr = apr_table_elts(m_req->headers_in);
479 const apr_table_entry_t *hdrs = (const apr_table_entry_t *) hdrs_arr->elts;
481 for (int i = 0; i < hdrs_arr->nelts; ++i) {
484 string cgiversion("HTTP_");
485 const char* pch = hdrs[i].key;
487 cgiversion += (isalnum(*pch) ? toupper(*pch) : '_');
490 m_allhttp.insert(cgiversion);
494 if (m_allhttp.count(cginame) > 0)
495 throw opensaml::SecurityPolicyException("Attempt to spoof header ($1) was detected.", params(1, rawname));
497 ap_table_unset(m_req->headers_in, rawname);
498 ap_table_set(m_req->headers_in, rawname, g_unsetHeaderValue.c_str());
501 void setHeader(const char* name, const char* value) {
502 if (m_dc->bUseEnvVars != 0) {
504 // this happens on subrequests
505 // ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(m_req), "shib_setheader: no_m_rc\n");
506 m_rc = init_request_config(m_req);
509 m_rc->env = ap_make_table(m_req->pool, 10);
510 // ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(m_req), "shib_set_env: %s=%s\n", name, value?value:"Null");
511 ap_table_set(m_rc->env, name, value ? value : "");
513 if (m_dc->bUseHeaders == 1)
514 ap_table_set(m_req->headers_in, name, value);
516 string getHeader(const char* name) const {
517 const char* hdr = ap_table_get(m_req->headers_in, name);
518 return string(hdr ? hdr : "");
520 string getSecureHeader(const char* name) const {
521 if (m_dc->bUseEnvVars != 0) {
523 if (m_rc && m_rc->env)
524 hdr = ap_table_get(m_rc->env, name);
527 return string(hdr ? hdr : "");
529 return getHeader(name);
531 void setRemoteUser(const char* user) {
532 SH_AP_USER(m_req) = user ? ap_pstrdup(m_req->pool, user) : nullptr;
533 if (m_dc->bUseHeaders == 1) {
535 ap_table_set(m_req->headers_in, "REMOTE_USER", user);
538 ap_table_unset(m_req->headers_in, "REMOTE_USER");
539 ap_table_set(m_req->headers_in, "REMOTE_USER", g_unsetHeaderValue.c_str());
543 string getRemoteUser() const {
544 return string(SH_AP_USER(m_req) ? SH_AP_USER(m_req) : "");
546 void setAuthType(const char* authtype) {
547 if (authtype && m_dc->bBasicHijack == 1)
549 SH_AP_AUTH_TYPE(m_req) = authtype ? ap_pstrdup(m_req->pool, authtype) : nullptr;
551 string getAuthType() const {
552 return string(SH_AP_AUTH_TYPE(m_req) ? SH_AP_AUTH_TYPE(m_req) : "");
554 void setContentType(const char* type) {
555 m_req->content_type = ap_psprintf(m_req->pool, "%s", type);
557 void setResponseHeader(const char* name, const char* value) {
558 HTTPResponse::setResponseHeader(name, value);
559 #ifdef SHIB_DEFERRED_HEADERS
561 // this happens on subrequests
562 m_rc = init_request_config(m_req);
565 m_rc->hdr_out = ap_make_table(m_req->pool, 5);
566 ap_table_add(m_rc->hdr_out, name, value);
570 ap_table_add(m_req->err_headers_out, name, value);
572 long sendResponse(istream& in, long status) {
573 if (status != XMLTOOLING_HTTP_STATUS_OK)
574 m_req->status = status;
575 ap_send_http_header(m_req);
579 ap_rwrite(buf,in.gcount(),m_req);
581 #if (defined(SHIB_APACHE_20) || defined(SHIB_APACHE_22))
582 if (status != XMLTOOLING_HTTP_STATUS_OK && status != XMLTOOLING_HTTP_STATUS_ERROR)
587 long sendRedirect(const char* url) {
588 HTTPResponse::sendRedirect(url);
589 ap_table_set(m_req->headers_out, "Location", url);
592 const vector<string>& getClientCertificates() const {
593 if (m_certs.empty()) {
594 const char* cert = ap_table_get(m_req->subprocess_env, "SSL_CLIENT_CERT");
596 m_certs.push_back(cert);
599 cert = ap_table_get(m_req->subprocess_env, ap_psprintf(m_req->pool, "SSL_CLIENT_CERT_CHAIN_%d", i++));
601 m_certs.push_back(cert);
606 long returnDecline(void) { return DECLINED; }
607 long returnOK(void) { return OK; }
608 #if defined(SHIBSP_HAVE_GSSAPI) && !defined(SHIB_APACHE_13)
609 gss_ctx_id_t getGSSContext() const {
610 gss_ctx_id_t ctx = GSS_C_NO_CONTEXT;
611 apr_pool_userdata_get((void**)&ctx, g_szGSSContextKey, m_req->pool);
617 /********************************************************************************/
620 extern "C" int shib_check_user(request_rec* r)
622 // Short-circuit entirely?
623 if (((shib_dir_config*)ap_get_module_config(r->per_dir_config, &mod_shib))->bOff==1)
626 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_check_user(%d): ENTER", (int)getpid());
628 ostringstream threadid;
629 threadid << "[" << getpid() << "] shib_check_user" << '\0';
630 xmltooling::NDC ndc(threadid.str().c_str());
633 ShibTargetApache sta(r,false,true);
635 // Check user authentication and export information, then set the handler bypass
636 pair<bool,long> res = sta.getServiceProvider().doAuthentication(sta,true);
637 apr_pool_userdata_setn((const void*)42,g_UserDataKey,nullptr,r->pool);
638 // If directed, install a spoof key to recognize when we've already cleared headers.
639 if (!g_spoofKey.empty() && (((shib_dir_config*)ap_get_module_config(r->per_dir_config, &mod_shib))->bUseHeaders==1))
640 ap_table_set(r->headers_in, "Shib-Spoof-Check", g_spoofKey.c_str());
641 if (res.first) return res.second;
643 // user auth was okay -- export the assertions now
644 res = sta.getServiceProvider().doExport(sta);
645 if (res.first) return res.second;
647 // export happened successfully.. this user is ok.
650 catch (exception& e) {
651 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "shib_check_user threw an exception: %s", e.what());
655 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "shib_check_user threw an unknown exception!");
662 extern "C" int shib_handler(request_rec* r)
664 // Short-circuit entirely?
665 if (((shib_dir_config*)ap_get_module_config(r->per_dir_config, &mod_shib))->bOff==1)
668 ostringstream threadid;
669 threadid << "[" << getpid() << "] shib_handler" << '\0';
670 xmltooling::NDC ndc(threadid.str().c_str());
672 #ifndef SHIB_APACHE_13
673 // With 2.x, this handler always runs, though last.
674 // We check if shib_check_user ran, because it will detect a handler request
675 // and dispatch it directly.
677 apr_pool_userdata_get(&data,g_UserDataKey,r->pool);
678 if (data==(const void*)42) {
679 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_handler skipped since check_user ran");
684 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_handler(%d): ENTER: %s", (int)getpid(), r->handler);
687 ShibTargetApache sta(r,true,false);
689 pair<bool,long> res = sta.getServiceProvider().doHandler(sta);
690 if (res.first) return res.second;
692 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "doHandler() did not do anything.");
695 catch (exception& e) {
696 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "shib_handler threw an exception: %s", e.what());
700 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "shib_handler threw an unknown exception!");
708 * shib_auth_checker() -- a simple resource manager to
709 * process the .htaccess settings
711 extern "C" int shib_auth_checker(request_rec* r)
713 // Short-circuit entirely?
714 if (((shib_dir_config*)ap_get_module_config(r->per_dir_config, &mod_shib))->bOff==1)
717 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_auth_checker(%d): ENTER", (int)getpid());
719 ostringstream threadid;
720 threadid << "[" << getpid() << "] shib_auth_checker" << '\0';
721 xmltooling::NDC ndc(threadid.str().c_str());
724 ShibTargetApache sta(r,false,false);
726 pair<bool,long> res = sta.getServiceProvider().doAuthorization(sta);
727 if (res.first) return res.second;
729 // The SP method should always return true, so if we get this far, something unusual happened.
730 // Just let Apache (or some other module) decide what to do.
733 catch (exception& e) {
734 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "shib_auth_checker threw an exception: %s", e.what());
738 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "shib_auth_checker threw an unknown exception!");
745 // Access control plugin that enforces htaccess rules
746 class htAccessControl : virtual public AccessControl
750 ~htAccessControl() {}
751 Lockable* lock() {return this;}
753 aclresult_t authorized(const SPRequest& request, const Session* session) const;
755 bool checkAttribute(const SPRequest& request, const Attribute* attr, const char* toMatch, RegularExpression* re) const;
758 AccessControl* htAccessFactory(const xercesc::DOMElement* const & e)
760 return new htAccessControl();
763 class ApacheRequestMapper : public virtual RequestMapper, public virtual PropertySet
766 ApacheRequestMapper(const xercesc::DOMElement* e);
767 ~ApacheRequestMapper() { delete m_mapper; delete m_htaccess; delete m_staKey; delete m_propsKey; }
768 Lockable* lock() { return m_mapper->lock(); }
769 void unlock() { m_staKey->setData(nullptr); m_propsKey->setData(nullptr); m_mapper->unlock(); }
770 Settings getSettings(const HTTPRequest& request) const;
772 const PropertySet* getParent() const { return nullptr; }
773 void setParent(const PropertySet*) {}
774 pair<bool,bool> getBool(const char* name, const char* ns=nullptr) const;
775 pair<bool,const char*> getString(const char* name, const char* ns=nullptr) const;
776 pair<bool,const XMLCh*> getXMLString(const char* name, const char* ns=nullptr) const;
777 pair<bool,unsigned int> getUnsignedInt(const char* name, const char* ns=nullptr) const;
778 pair<bool,int> getInt(const char* name, const char* ns=nullptr) const;
779 void getAll(map<string,const char*>& properties) const;
780 const PropertySet* getPropertySet(const char* name, const char* ns=shibspconstants::ASCII_SHIB2SPCONFIG_NS) const;
781 const xercesc::DOMElement* getElement() const;
784 RequestMapper* m_mapper;
786 ThreadKey* m_propsKey;
787 AccessControl* m_htaccess;
790 RequestMapper* ApacheRequestMapFactory(const xercesc::DOMElement* const & e)
792 return new ApacheRequestMapper(e);
795 ApacheRequestMapper::ApacheRequestMapper(const xercesc::DOMElement* e) : m_mapper(nullptr), m_staKey(nullptr), m_propsKey(nullptr), m_htaccess(nullptr)
797 m_mapper=SPConfig::getConfig().RequestMapperManager.newPlugin(XML_REQUEST_MAPPER,e);
798 m_htaccess=new htAccessControl();
799 m_staKey=ThreadKey::create(nullptr);
800 m_propsKey=ThreadKey::create(nullptr);
803 RequestMapper::Settings ApacheRequestMapper::getSettings(const HTTPRequest& request) const
805 Settings s=m_mapper->getSettings(request);
806 m_staKey->setData((void*)dynamic_cast<const ShibTargetApache*>(&request));
807 m_propsKey->setData((void*)s.first);
808 return pair<const PropertySet*,AccessControl*>(this,s.second ? s.second : m_htaccess);
811 pair<bool,bool> ApacheRequestMapper::getBool(const char* name, const char* ns) const
813 const ShibTargetApache* sta=reinterpret_cast<const ShibTargetApache*>(m_staKey->getData());
814 const PropertySet* s=reinterpret_cast<const PropertySet*>(m_propsKey->getData());
816 // Override Apache-settable boolean properties.
817 if (name && !strcmp(name,"requireSession") && sta->m_dc->bRequireSession != -1)
818 return make_pair(true, sta->m_dc->bRequireSession==1);
819 else if (name && !strcmp(name,"exportAssertion") && sta->m_dc->bExportAssertion != -1)
820 return make_pair(true, sta->m_dc->bExportAssertion==1);
821 else if (sta->m_dc->tSettings) {
822 const char* prop = ap_table_get(sta->m_dc->tSettings, name);
824 return make_pair(true, !strcmp(prop, "true") || !strcmp(prop, "1") || !strcmp(prop, "On"));
827 return s ? s->getBool(name,ns) : make_pair(false,false);
830 pair<bool,const char*> ApacheRequestMapper::getString(const char* name, const char* ns) const
832 const ShibTargetApache* sta=reinterpret_cast<const ShibTargetApache*>(m_staKey->getData());
833 const PropertySet* s=reinterpret_cast<const PropertySet*>(m_propsKey->getData());
835 // Override Apache-settable string properties.
836 if (name && !strcmp(name,"authType")) {
837 const char *auth_type=ap_auth_type(sta->m_req);
839 // Check for Basic Hijack
840 if (!strcasecmp(auth_type, "basic") && sta->m_dc->bBasicHijack == 1)
841 auth_type = "shibboleth";
842 return make_pair(true,auth_type);
845 else if (name && !strcmp(name,"applicationId") && sta->m_dc->szApplicationId)
846 return pair<bool,const char*>(true,sta->m_dc->szApplicationId);
847 else if (name && !strcmp(name,"requireSessionWith") && sta->m_dc->szRequireWith)
848 return pair<bool,const char*>(true,sta->m_dc->szRequireWith);
849 else if (name && !strcmp(name,"redirectToSSL") && sta->m_dc->szRedirectToSSL)
850 return pair<bool,const char*>(true,sta->m_dc->szRedirectToSSL);
851 else if (sta->m_dc->tSettings) {
852 const char* prop = ap_table_get(sta->m_dc->tSettings, name);
854 return make_pair(true, prop);
857 return s ? s->getString(name,ns) : pair<bool,const char*>(false,nullptr);
860 pair<bool,const XMLCh*> ApacheRequestMapper::getXMLString(const char* name, const char* ns) const
862 const PropertySet* s=reinterpret_cast<const PropertySet*>(m_propsKey->getData());
863 return s ? s->getXMLString(name,ns) : pair<bool,const XMLCh*>(false,nullptr);
866 pair<bool,unsigned int> ApacheRequestMapper::getUnsignedInt(const char* name, const char* ns) const
868 const ShibTargetApache* sta=reinterpret_cast<const ShibTargetApache*>(m_staKey->getData());
869 const PropertySet* s=reinterpret_cast<const PropertySet*>(m_propsKey->getData());
871 // Override Apache-settable int properties.
872 if (name && !strcmp(name,"redirectToSSL") && sta->m_dc->szRedirectToSSL)
873 return pair<bool,unsigned int>(true, strtol(sta->m_dc->szRedirectToSSL, nullptr, 10));
874 else if (sta->m_dc->tSettings) {
875 const char* prop = ap_table_get(sta->m_dc->tSettings, name);
877 return pair<bool,unsigned int>(true, atoi(prop));
880 return s ? s->getUnsignedInt(name,ns) : pair<bool,unsigned int>(false,0);
883 pair<bool,int> ApacheRequestMapper::getInt(const char* name, const char* ns) const
885 const ShibTargetApache* sta=reinterpret_cast<const ShibTargetApache*>(m_staKey->getData());
886 const PropertySet* s=reinterpret_cast<const PropertySet*>(m_propsKey->getData());
888 // Override Apache-settable int properties.
889 if (name && !strcmp(name,"redirectToSSL") && sta->m_dc->szRedirectToSSL)
890 return pair<bool,int>(true,atoi(sta->m_dc->szRedirectToSSL));
891 else if (sta->m_dc->tSettings) {
892 const char* prop = ap_table_get(sta->m_dc->tSettings, name);
894 return make_pair(true, atoi(prop));
897 return s ? s->getInt(name,ns) : pair<bool,int>(false,0);
900 static int _rm_get_all_table_walk(void *v, const char *key, const char *value)
902 reinterpret_cast<map<string,const char*>*>(v)->insert(pair<string,const char*>(key, value));
906 void ApacheRequestMapper::getAll(map<string,const char*>& properties) const
908 const ShibTargetApache* sta=reinterpret_cast<const ShibTargetApache*>(m_staKey->getData());
909 const PropertySet* s=reinterpret_cast<const PropertySet*>(m_propsKey->getData());
912 s->getAll(properties);
916 const char* auth_type=ap_auth_type(sta->m_req);
918 // Check for Basic Hijack
919 if (!strcasecmp(auth_type, "basic") && sta->m_dc->bBasicHijack == 1)
920 auth_type = "shibboleth";
921 properties["authType"] = auth_type;
924 if (sta->m_dc->szApplicationId)
925 properties["applicationId"] = sta->m_dc->szApplicationId;
926 if (sta->m_dc->szRequireWith)
927 properties["requireSessionWith"] = sta->m_dc->szRequireWith;
928 if (sta->m_dc->szRedirectToSSL)
929 properties["redirectToSSL"] = sta->m_dc->szRedirectToSSL;
930 if (sta->m_dc->bRequireSession != 0)
931 properties["requireSession"] = (sta->m_dc->bRequireSession==1) ? "true" : "false";
932 if (sta->m_dc->bExportAssertion != 0)
933 properties["exportAssertion"] = (sta->m_dc->bExportAssertion==1) ? "true" : "false";
935 if (sta->m_dc->tSettings)
936 ap_table_do(_rm_get_all_table_walk, &properties, sta->m_dc->tSettings, NULL);
939 const PropertySet* ApacheRequestMapper::getPropertySet(const char* name, const char* ns) const
941 const PropertySet* s=reinterpret_cast<const PropertySet*>(m_propsKey->getData());
942 return s ? s->getPropertySet(name,ns) : nullptr;
945 const xercesc::DOMElement* ApacheRequestMapper::getElement() const
947 const PropertySet* s=reinterpret_cast<const PropertySet*>(m_propsKey->getData());
948 return s ? s->getElement() : nullptr;
951 static SH_AP_TABLE* groups_for_user(request_rec* r, const char* user, char* grpfile)
954 SH_AP_TABLE* grps=ap_make_table(r->pool,15);
955 char l[MAX_STRING_LEN];
956 const char *group_name, *ll, *w;
958 #ifdef SHIB_APACHE_13
959 if (!(f=ap_pcfg_openfile(r->pool,grpfile))) {
961 if (ap_pcfg_openfile(&f,r->pool,grpfile) != APR_SUCCESS) {
963 ap_log_rerror(APLOG_MARK,APLOG_DEBUG,SH_AP_R(r),"groups_for_user() could not open group file: %s\n",grpfile);
968 #ifdef SHIB_APACHE_13
969 sp=ap_make_sub_pool(r->pool);
971 if (apr_pool_create(&sp,r->pool) != APR_SUCCESS) {
972 ap_log_rerror(APLOG_MARK,APLOG_ERR,0,r,
973 "groups_for_user() could not create a subpool");
978 while (!(ap_cfg_getline(l,MAX_STRING_LEN,f))) {
979 if ((*l=='#') || (!*l))
984 group_name=ap_getword(sp,&ll,':');
987 w=ap_getword_conf(sp,&ll);
988 if (!strcmp(w,user)) {
989 ap_table_setn(grps,ap_pstrdup(r->pool,group_name),"in");
999 bool htAccessControl::checkAttribute(const SPRequest& request, const Attribute* attr, const char* toMatch, RegularExpression* re) const
1001 bool caseSensitive = attr->isCaseSensitive();
1002 const vector<string>& vals = attr->getSerializedValues();
1003 for (vector<string>::const_iterator v=vals.begin(); v!=vals.end(); ++v) {
1005 auto_arrayptr<XMLCh> trans(fromUTF8(v->c_str()));
1006 if (re->matches(trans.get())) {
1007 if (request.isPriorityEnabled(SPRequest::SPDebug))
1008 request.log(SPRequest::SPDebug, string("htaccess: expecting regexp ") + toMatch + ", got " + *v + ": acccepted");
1012 else if ((caseSensitive && *v == toMatch) || (!caseSensitive && !strcasecmp(v->c_str(), toMatch))) {
1013 if (request.isPriorityEnabled(SPRequest::SPDebug))
1014 request.log(SPRequest::SPDebug, string("htaccess: expecting ") + toMatch + ", got " + *v + ": accepted");
1017 else if (request.isPriorityEnabled(SPRequest::SPDebug)) {
1018 request.log(SPRequest::SPDebug, string("htaccess: expecting ") + toMatch + ", got " + *v + ": rejected");
1024 AccessControl::aclresult_t htAccessControl::authorized(const SPRequest& request, const Session* session) const
1026 // Make sure the object is our type.
1027 const ShibTargetApache* sta=dynamic_cast<const ShibTargetApache*>(&request);
1029 throw ConfigurationException("Request wrapper object was not of correct type.");
1031 int m=sta->m_req->method_number;
1032 bool method_restricted=false;
1035 const array_header* reqs_arr=ap_requires(sta->m_req);
1037 return shib_acl_indeterminate; // should never happen
1039 // Check for an "embedded" AccessControl plugin.
1040 if (sta->m_dc->szAccessControl) {
1041 aclresult_t result = shib_acl_false;
1043 ifstream aclfile(sta->m_dc->szAccessControl);
1044 xercesc::DOMDocument* acldoc = XMLToolingConfig::getConfig().getParser().parse(aclfile);
1045 XercesJanitor<xercesc::DOMDocument> docjanitor(acldoc);
1046 static XMLCh _type[] = UNICODE_LITERAL_4(t,y,p,e);
1047 string t(XMLHelper::getAttrString(acldoc ? acldoc->getDocumentElement() : nullptr, nullptr, _type));
1049 throw ConfigurationException("Missing type attribute in AccessControl plugin configuration.");
1050 auto_ptr<AccessControl> aclplugin(SPConfig::getConfig().AccessControlManager.newPlugin(t.c_str(), acldoc->getDocumentElement()));
1051 Locker acllock(aclplugin.get());
1052 result = aclplugin->authorized(request, session);
1054 catch (exception& ex) {
1055 request.log(SPRequest::SPError, ex.what());
1058 if (result == shib_acl_true && sta->m_dc->bRequireAll != 1) {
1059 // If we're not insisting that all rules be met, then we're done.
1060 request.log(SPRequest::SPDebug, "htaccess: embedded AccessControl plugin was successful, granting access");
1061 return shib_acl_true;
1063 else if (result != shib_acl_true && sta->m_dc->bRequireAll == 1) {
1064 // If we're insisting that all rules be met, which is not something Apache really handles well,
1065 // then we either return false or indeterminate based on the authoritative option, which defaults on.
1066 if (sta->m_dc->bAuthoritative != 0) {
1067 request.log(SPRequest::SPDebug, "htaccess: embedded AccessControl plugin was unsuccessful, denying access");
1068 return shib_acl_false;
1071 request.log(SPRequest::SPDebug, "htaccess: embedded AccessControl plugin was unsuccessful but not authoritative, leaving it up to Apache");
1072 return shib_acl_indeterminate;
1077 require_line* reqs=(require_line*)reqs_arr->elts;
1079 for (int x=0; x<reqs_arr->nelts; x++) {
1080 // This rule should be completely ignored, the method doesn't fit.
1081 // The rule just doesn't exist for our purposes.
1082 if (!(reqs[x].method_mask & (1 << m)))
1085 method_restricted=true; // this lets us know at the end that at least one rule was potentially enforcable.
1087 // Tracks status of this rule's evaluation.
1088 bool status = false;
1090 string remote_user = request.getRemoteUser();
1092 t = reqs[x].requirement;
1093 w = ap_getword_white(sta->m_req->pool, &t);
1095 if (!strcasecmp(w,"shibboleth")) {
1096 // This is a dummy rule needed because Apache conflates authn and authz.
1097 // Without some require rule, AuthType is ignored and no check_user hooks run.
1099 // We evaluate to false if ShibAccessControl is used and ShibRequireAll is off.
1100 // This allows actual rules to dictate the result, since ShibAccessControl returned
1101 // non-true, and if nothing else is used, access will be denied.
1102 if (!sta->m_dc->szAccessControl || sta->m_dc->bRequireAll == 1) {
1103 // We evaluate to true, because ShibRequireAll is enabled (so a true is just a no-op)
1104 // or because there was no other AccessControl rule in place, so this may be the only
1109 else if (!strcmp(w,"valid-user") && session) {
1110 request.log(SPRequest::SPDebug, "htaccess: accepting valid-user based on active session");
1113 else if (!strcmp(w,"user") && !remote_user.empty()) {
1114 bool regexp = false;
1116 w = ap_getword_conf(sta->m_req->pool,&t);
1121 else if (*w == '!') {
1122 // A negated rule presumes success unless a match is found.
1129 // Figure out if there's a match.
1133 // To do regex matching, we have to convert from UTF-8.
1134 auto_arrayptr<XMLCh> trans(fromUTF8(w));
1135 RegularExpression re(trans.get());
1136 auto_arrayptr<XMLCh> trans2(fromUTF8(remote_user.c_str()));
1137 match = re.matches(trans2.get());
1139 catch (XMLException& ex) {
1140 auto_ptr_char tmp(ex.getMessage());
1141 request.log(SPRequest::SPError,
1142 string("htaccess plugin caught exception while parsing regular expression (") + w + "): " + tmp.get());
1145 else if (remote_user == w) {
1150 // If we matched, then we're done with this rule either way and we flip status to reflect the outcome.
1152 if (request.isPriorityEnabled(SPRequest::SPDebug))
1153 request.log(SPRequest::SPDebug,
1154 string("htaccess: require user ") + (!status ? "rejecting (" : "accepting (") + remote_user + ")");
1159 else if (!strcmp(w,"group") && !remote_user.empty()) {
1160 SH_AP_TABLE* grpstatus = nullptr;
1161 if (sta->m_dc->szAuthGrpFile) {
1162 if (request.isPriorityEnabled(SPRequest::SPDebug))
1163 request.log(SPRequest::SPDebug,string("htaccess plugin using groups file: ") + sta->m_dc->szAuthGrpFile);
1164 grpstatus = groups_for_user(sta->m_req,remote_user.c_str(),sta->m_dc->szAuthGrpFile);
1168 w = ap_getword_conf(sta->m_req->pool,&t);
1170 // A negated rule presumes success unless a match is found.
1175 if (grpstatus && ap_table_get(grpstatus,w)) {
1176 // If we matched, then we're done with this rule either way and we flip status to reflect the outcome.
1178 request.log(SPRequest::SPDebug, string("htaccess: require group ") + (!status ? "rejecting (" : "accepting (") + w + ")");
1183 else if (!strcmp(w,"authnContextClassRef") || !strcmp(w,"authnContextDeclRef")) {
1184 const char* ref = !strcmp(w,"authnContextClassRef") ? session->getAuthnContextClassRef() : session->getAuthnContextDeclRef();
1186 bool regexp = false;
1188 w = ap_getword_conf(sta->m_req->pool,&t);
1193 else if (*w == '!') {
1194 // A negated rule presumes success unless a match is found.
1201 // Figure out if there's a match.
1205 // To do regex matching, we have to convert from UTF-8.
1206 RegularExpression re(w);
1207 match = re.matches(ref);
1209 catch (XMLException& ex) {
1210 auto_ptr_char tmp(ex.getMessage());
1211 request.log(SPRequest::SPError,
1212 string("htaccess plugin caught exception while parsing regular expression (") + w + "): " + tmp.get());
1215 else if (!strcmp(w,ref)) {
1220 // If we matched, then we're done with this rule either way and we flip status to reflect the outcome.
1222 if (request.isPriorityEnabled(SPRequest::SPDebug))
1223 request.log(SPRequest::SPDebug,
1224 string("htaccess: require authnContext ") + (!status ? "rejecting (" : "accepting (") + ref + ")");
1229 else if (request.isPriorityEnabled(SPRequest::SPDebug)) {
1230 request.log(SPRequest::SPDebug, "htaccess: require authnContext rejecting session with no context associated");
1233 else if (!session) {
1234 request.log(SPRequest::SPError, string("htaccess: require ") + w + " not given a valid session, are you using lazy sessions?");
1237 // Find the attribute(s) matching the require rule.
1238 pair<multimap<string,const Attribute*>::const_iterator,multimap<string,const Attribute*>::const_iterator> attrs =
1239 session->getIndexedAttributes().equal_range(w);
1242 while (!status && attrs.first!=attrs.second && *t) {
1243 w=ap_getword_conf(sta->m_req->pool,&t);
1250 auto_ptr<RegularExpression> re;
1252 delete re.release();
1253 auto_arrayptr<XMLCh> trans(fromUTF8(w));
1254 auto_ptr<xercesc::RegularExpression> temp(new xercesc::RegularExpression(trans.get()));
1258 pair<multimap<string,const Attribute*>::const_iterator,multimap<string,const Attribute*>::const_iterator> attrs2(attrs);
1259 for (; !status && attrs2.first!=attrs2.second; ++attrs2.first) {
1260 if (checkAttribute(request, attrs2.first->second, w, regexp ? re.get() : nullptr)) {
1265 catch (XMLException& ex) {
1266 auto_ptr_char tmp(ex.getMessage());
1267 request.log(SPRequest::SPError,
1268 string("htaccess plugin caught exception while parsing regular expression (") + w + "): " + tmp.get()
1274 // If status is false, we found a rule we couldn't satisfy.
1275 // Could be an unknown rule to us, or it just didn't match.
1277 if (status && sta->m_dc->bRequireAll != 1) {
1278 // If we're not insisting that all rules be met, then we're done.
1279 request.log(SPRequest::SPDebug, "htaccess: a rule was successful, granting access");
1280 return shib_acl_true;
1282 else if (!status && sta->m_dc->bRequireAll == 1) {
1283 // If we're insisting that all rules be met, which is not something Apache really handles well,
1284 // then we either return false or indeterminate based on the authoritative option, which defaults on.
1285 if (sta->m_dc->bAuthoritative != 0) {
1286 request.log(SPRequest::SPDebug, "htaccess: a rule was unsuccessful, denying access");
1287 return shib_acl_false;
1290 request.log(SPRequest::SPDebug, "htaccess: a rule was unsuccessful but not authoritative, leaving it up to Apache");
1291 return shib_acl_indeterminate;
1294 // Otherwise, we keep going. If we're requring all, then we have to check every rule.
1295 // If not we just didn't find a successful rule yet, so we keep going anyway.
1298 // If we get here, we either "failed" or we're in require all mode (but not both).
1299 // If no rules possibly apply or we insisted that all rules check out, then we're good.
1300 if (!method_restricted) {
1301 request.log(SPRequest::SPDebug, "htaccess: no rules applied to this request method, granting access");
1302 return shib_acl_true;
1304 else if (sta->m_dc->bRequireAll == 1) {
1305 request.log(SPRequest::SPDebug, "htaccess: all rules successful, granting access");
1306 return shib_acl_true;
1308 else if (sta->m_dc->bAuthoritative != 0) {
1309 request.log(SPRequest::SPDebug, "htaccess: no rules were successful, denying access");
1310 return shib_acl_false;
1313 request.log(SPRequest::SPDebug, "htaccess: no rules were successful but not authoritative, leaving it up to Apache");
1314 return shib_acl_indeterminate;
1318 // Initial look at a request - create the per-request structure
1319 static int shib_post_read(request_rec *r)
1321 init_request_config(r);
1322 //ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_post_read");
1326 // fixups: set environment vars
1328 extern "C" int shib_fixups(request_rec* r)
1330 shib_request_config *rc = (shib_request_config*)ap_get_module_config(r->request_config, &mod_shib);
1331 shib_dir_config *dc = (shib_dir_config*)ap_get_module_config(r->per_dir_config, &mod_shib);
1332 if (dc->bOff==1 || dc->bUseEnvVars==0)
1335 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_fixup(%d): ENTER", (int)getpid());
1337 if (rc==nullptr || rc->env==nullptr || ap_is_empty_table(rc->env))
1340 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_fixup adding %d vars", ap_table_elts(rc->env)->nelts);
1341 r->subprocess_env = ap_overlay_tables(r->pool, r->subprocess_env, rc->env);
1346 #ifdef SHIB_APACHE_13
1349 * Cleanup the (per-process) pool info.
1351 extern "C" void shib_child_exit(server_rec* s, SH_AP_POOL* p)
1354 ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_child_exit(%d) dealing with g_Config..", (int)getpid());
1357 ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_child_exit() done");
1363 * Apache 2.x doesn't allow for per-child cleanup, causes CGI forks to hang.
1365 extern "C" apr_status_t shib_exit(void* data)
1371 ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,0,nullptr,"shib_exit() done");
1377 * shire_child_init()
1378 * Things to do when the child process is initialized.
1379 * (or after the configs are read in apache-2)
1381 #ifdef SHIB_APACHE_13
1382 extern "C" void shib_child_init(server_rec* s, SH_AP_POOL* p)
1384 extern "C" void shib_child_init(apr_pool_t* p, server_rec* s)
1387 // Initialize runtime components.
1389 ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init(%d) starting", (int)getpid());
1392 ap_log_error(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() already initialized!");
1396 g_Config=&SPConfig::getConfig();
1397 g_Config->setFeatures(
1398 SPConfig::Listener |
1400 SPConfig::RequestMapping |
1401 SPConfig::InProcess |
1405 if (!g_Config->init(g_szSchemaDir, g_szPrefix)) {
1406 ap_log_error(APLOG_MARK,APLOG_CRIT|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() failed to initialize libraries");
1409 g_Config->AccessControlManager.registerFactory(HT_ACCESS_CONTROL,&htAccessFactory);
1410 g_Config->RequestMapperManager.registerFactory(NATIVE_REQUEST_MAPPER,&ApacheRequestMapFactory);
1413 if (!g_Config->instantiate(g_szSHIBConfig, true))
1414 throw runtime_error("unknown error");
1416 catch (exception& ex) {
1417 ap_log_error(APLOG_MARK,APLOG_CRIT|APLOG_NOERRNO,SH_AP_R(s),"%s",ex.what());
1418 ap_log_error(APLOG_MARK,APLOG_CRIT|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() failed to load configuration");
1422 ServiceProvider* sp=g_Config->getServiceProvider();
1423 xmltooling::Locker locker(sp);
1424 const PropertySet* props=sp->getPropertySet("InProcess");
1426 pair<bool,const char*> unsetValue=props->getString("unsetHeaderValue");
1427 if (unsetValue.first)
1428 g_unsetHeaderValue = unsetValue.second;
1429 pair<bool,bool> flag=props->getBool("checkSpoofing");
1430 g_checkSpoofing = !flag.first || flag.second;
1431 if (g_checkSpoofing) {
1432 unsetValue=props->getString("spoofKey");
1433 if (unsetValue.first)
1434 g_spoofKey = unsetValue.second;
1436 flag=props->getBool("catchAll");
1437 g_catchAll = flag.first && flag.second;
1440 // Set the cleanup handler
1441 apr_pool_cleanup_register(p, nullptr, &shib_exit, apr_pool_cleanup_null);
1443 ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() done");
1447 #ifdef SHIB_DEFERRED_HEADERS
1448 static void set_output_filter(request_rec *r)
1450 ap_add_output_filter("SHIB_HEADERS_OUT", nullptr, r, r->connection);
1453 static void set_error_filter(request_rec *r)
1455 ap_add_output_filter("SHIB_HEADERS_ERR", nullptr, r, r->connection);
1458 static int _table_add(void *v, const char *key, const char *value)
1460 apr_table_addn((apr_table_t*)v, key, value);
1464 static apr_status_t do_output_filter(ap_filter_t *f, apr_bucket_brigade *in)
1466 request_rec *r = f->r;
1467 shib_request_config *rc = (shib_request_config*) ap_get_module_config(r->request_config, &mod_shib);
1469 if (rc && rc->hdr_out) {
1470 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_out_filter: merging %d headers", apr_table_elts(rc->hdr_out)->nelts);
1471 // can't use overlap call because it will collapse Set-Cookie headers
1472 //apr_table_overlap(r->headers_out, rc->hdr_out, APR_OVERLAP_TABLES_MERGE);
1473 apr_table_do(_table_add,r->headers_out, rc->hdr_out,NULL);
1476 /* remove ourselves from the filter chain */
1477 ap_remove_output_filter(f);
1479 /* send the data up the stack */
1480 return ap_pass_brigade(f->next,in);
1483 static apr_status_t do_error_filter(ap_filter_t *f, apr_bucket_brigade *in)
1485 request_rec *r = f->r;
1486 shib_request_config *rc = (shib_request_config*) ap_get_module_config(r->request_config, &mod_shib);
1488 if (rc && rc->hdr_out) {
1489 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_err_filter: merging %d headers", apr_table_elts(rc->hdr_out)->nelts);
1490 // can't use overlap call because it will collapse Set-Cookie headers
1491 //apr_table_overlap(r->err_headers_out, rc->hdr_out, APR_OVERLAP_TABLES_MERGE);
1492 apr_table_do(_table_add,r->err_headers_out, rc->hdr_out,NULL);
1495 /* remove ourselves from the filter chain */
1496 ap_remove_output_filter(f);
1498 /* send the data up the stack */
1499 return ap_pass_brigade(f->next,in);
1501 #endif // SHIB_DEFERRED_HEADERS
1503 typedef const char* (*config_fn_t)(void);
1505 #ifdef SHIB_APACHE_13
1507 // SHIB Module commands
1509 static command_rec shire_cmds[] = {
1510 {"ShibPrefix", (config_fn_t)ap_set_global_string_slot, &g_szPrefix,
1511 RSRC_CONF, TAKE1, "Shibboleth installation directory"},
1512 {"ShibConfig", (config_fn_t)ap_set_global_string_slot, &g_szSHIBConfig,
1513 RSRC_CONF, TAKE1, "Path to shibboleth2.xml config file"},
1514 {"ShibCatalogs", (config_fn_t)ap_set_global_string_slot, &g_szSchemaDir,
1515 RSRC_CONF, TAKE1, "Paths of XML schema catalogs"},
1517 {"ShibURLScheme", (config_fn_t)shib_set_server_string_slot,
1518 (void *) XtOffsetOf (shib_server_config, szScheme),
1519 RSRC_CONF, TAKE1, "URL scheme to force into generated URLs for a vhost"},
1521 {"ShibRequestSetting", (config_fn_t)shib_table_set, nullptr,
1522 OR_AUTHCFG, TAKE2, "Set arbitrary Shibboleth request property for content"},
1524 {"ShibAccessControl", (config_fn_t)ap_set_string_slot,
1525 (void *) XtOffsetOf (shib_dir_config, szAccessControl),
1526 OR_AUTHCFG, TAKE1, "Set arbitrary Shibboleth access control plugin for content"},
1528 {"ShibDisable", (config_fn_t)ap_set_flag_slot,
1529 (void *) XtOffsetOf (shib_dir_config, bOff),
1530 OR_AUTHCFG, FLAG, "Disable all Shib module activity here to save processing effort"},
1531 {"ShibApplicationId", (config_fn_t)ap_set_string_slot,
1532 (void *) XtOffsetOf (shib_dir_config, szApplicationId),
1533 OR_AUTHCFG, TAKE1, "Set Shibboleth applicationId property for content"},
1534 {"ShibBasicHijack", (config_fn_t)ap_set_flag_slot,
1535 (void *) XtOffsetOf (shib_dir_config, bBasicHijack),
1536 OR_AUTHCFG, FLAG, "(DEPRECATED) Respond to AuthType Basic and convert to shibboleth"},
1537 {"ShibRequireSession", (config_fn_t)ap_set_flag_slot,
1538 (void *) XtOffsetOf (shib_dir_config, bRequireSession),
1539 OR_AUTHCFG, FLAG, "Initiates a new session if one does not exist"},
1540 {"ShibRequireSessionWith", (config_fn_t)ap_set_string_slot,
1541 (void *) XtOffsetOf (shib_dir_config, szRequireWith),
1542 OR_AUTHCFG, TAKE1, "Initiates a new session if one does not exist using a specific SessionInitiator"},
1543 {"ShibExportAssertion", (config_fn_t)ap_set_flag_slot,
1544 (void *) XtOffsetOf (shib_dir_config, bExportAssertion),
1545 OR_AUTHCFG, FLAG, "Export SAML attribute assertion(s) to Shib-Attributes header"},
1546 {"ShibRedirectToSSL", (config_fn_t)ap_set_string_slot,
1547 (void *) XtOffsetOf (shib_dir_config, szRedirectToSSL),
1548 OR_AUTHCFG, TAKE1, "Redirect non-SSL requests to designated port" },
1549 {"AuthGroupFile", (config_fn_t)shib_ap_set_file_slot,
1550 (void *) XtOffsetOf (shib_dir_config, szAuthGrpFile),
1551 OR_AUTHCFG, TAKE1, "text file containing group names and member user IDs"},
1552 {"ShibRequireAll", (config_fn_t)ap_set_flag_slot,
1553 (void *) XtOffsetOf (shib_dir_config, bRequireAll),
1554 OR_AUTHCFG, FLAG, "All require directives must match"},
1555 {"AuthzShibAuthoritative", (config_fn_t)ap_set_flag_slot,
1556 (void *) XtOffsetOf (shib_dir_config, bAuthoritative),
1557 OR_AUTHCFG, FLAG, "Allow failed mod_shib htaccess authorization to fall through to other modules"},
1558 {"ShibUseEnvironment", (config_fn_t)ap_set_flag_slot,
1559 (void *) XtOffsetOf (shib_dir_config, bUseEnvVars),
1560 OR_AUTHCFG, FLAG, "Export attributes using environment variables (default)"},
1561 {"ShibUseHeaders", (config_fn_t)ap_set_flag_slot,
1562 (void *) XtOffsetOf (shib_dir_config, bUseHeaders),
1563 OR_AUTHCFG, FLAG, "Export attributes using custom HTTP headers"},
1569 handler_rec shib_handlers[] = {
1570 { "shib-handler", shib_handler },
1574 module MODULE_VAR_EXPORT mod_shib = {
1575 STANDARD_MODULE_STUFF,
1576 nullptr, /* initializer */
1577 create_shib_dir_config, /* dir config creater */
1578 merge_shib_dir_config, /* dir merger --- default is to override */
1579 create_shib_server_config, /* server config */
1580 merge_shib_server_config, /* merge server config */
1581 shire_cmds, /* command table */
1582 shib_handlers, /* handlers */
1583 nullptr, /* filename translation */
1584 shib_check_user, /* check_user_id */
1585 shib_auth_checker, /* check auth */
1586 nullptr, /* check access */
1587 nullptr, /* type_checker */
1588 shib_fixups, /* fixups */
1589 nullptr, /* logger */
1590 nullptr, /* header parser */
1591 shib_child_init, /* child_init */
1592 shib_child_exit, /* child_exit */
1593 shib_post_read /* post read-request */
1596 #elif defined(SHIB_APACHE_20) || defined(SHIB_APACHE_22)
1598 //static const char * const authnPre[] = { "mod_gss.c", nullptr };
1600 extern "C" void shib_register_hooks (apr_pool_t *p)
1602 #ifdef SHIB_DEFERRED_HEADERS
1603 ap_register_output_filter("SHIB_HEADERS_OUT", do_output_filter, nullptr, AP_FTYPE_CONTENT_SET);
1604 ap_hook_insert_filter(set_output_filter, nullptr, nullptr, APR_HOOK_LAST);
1605 ap_register_output_filter("SHIB_HEADERS_ERR", do_error_filter, nullptr, AP_FTYPE_CONTENT_SET);
1606 ap_hook_insert_error_filter(set_error_filter, nullptr, nullptr, APR_HOOK_LAST);
1607 ap_hook_post_read_request(shib_post_read, nullptr, nullptr, APR_HOOK_MIDDLE);
1609 ap_hook_child_init(shib_child_init, nullptr, nullptr, APR_HOOK_MIDDLE);
1610 const char* prereq = getenv("SHIBSP_APACHE_PREREQ");
1611 if (prereq && *prereq) {
1612 const char* const authnPre[] = { prereq, nullptr };
1613 ap_hook_check_user_id(shib_check_user, authnPre, nullptr, APR_HOOK_MIDDLE);
1616 ap_hook_check_user_id(shib_check_user, nullptr, nullptr, APR_HOOK_MIDDLE);
1618 ap_hook_auth_checker(shib_auth_checker, nullptr, nullptr, APR_HOOK_FIRST);
1619 ap_hook_handler(shib_handler, nullptr, nullptr, APR_HOOK_LAST);
1620 ap_hook_fixups(shib_fixups, nullptr, nullptr, APR_HOOK_MIDDLE);
1623 // SHIB Module commands
1626 static command_rec shib_cmds[] = {
1627 AP_INIT_TAKE1("ShibPrefix", (config_fn_t)ap_set_global_string_slot, &g_szPrefix,
1628 RSRC_CONF, "Shibboleth installation directory"),
1629 AP_INIT_TAKE1("ShibConfig", (config_fn_t)ap_set_global_string_slot, &g_szSHIBConfig,
1630 RSRC_CONF, "Path to shibboleth2.xml config file"),
1631 AP_INIT_TAKE1("ShibCatalogs", (config_fn_t)ap_set_global_string_slot, &g_szSchemaDir,
1632 RSRC_CONF, "Paths of XML schema catalogs"),
1633 AP_INIT_TAKE1("ShibGSSKey", (config_fn_t)ap_set_global_string_slot, &g_szGSSContextKey,
1634 RSRC_CONF, "Name of user data key containing GSS context established by GSS module"),
1636 AP_INIT_TAKE1("ShibURLScheme", (config_fn_t)shib_set_server_string_slot,
1637 (void *) offsetof (shib_server_config, szScheme),
1638 RSRC_CONF, "URL scheme to force into generated URLs for a vhost"),
1640 AP_INIT_TAKE2("ShibRequestSetting", (config_fn_t)shib_table_set, nullptr,
1641 OR_AUTHCFG, "Set arbitrary Shibboleth request property for content"),
1643 AP_INIT_TAKE1("ShibAccessControl", (config_fn_t)ap_set_string_slot,
1644 (void *) offsetof (shib_dir_config, szAccessControl),
1645 OR_AUTHCFG, "Set arbitrary Shibboleth access control plugin for content"),
1647 AP_INIT_FLAG("ShibDisable", (config_fn_t)ap_set_flag_slot,
1648 (void *) offsetof (shib_dir_config, bOff),
1649 OR_AUTHCFG, "Disable all Shib module activity here to save processing effort"),
1650 AP_INIT_TAKE1("ShibApplicationId", (config_fn_t)ap_set_string_slot,
1651 (void *) offsetof (shib_dir_config, szApplicationId),
1652 OR_AUTHCFG, "Set Shibboleth applicationId property for content"),
1653 AP_INIT_FLAG("ShibBasicHijack", (config_fn_t)ap_set_flag_slot,
1654 (void *) offsetof (shib_dir_config, bBasicHijack),
1655 OR_AUTHCFG, "(DEPRECATED) Respond to AuthType Basic and convert to shibboleth"),
1656 AP_INIT_FLAG("ShibRequireSession", (config_fn_t)ap_set_flag_slot,
1657 (void *) offsetof (shib_dir_config, bRequireSession),
1658 OR_AUTHCFG, "Initiates a new session if one does not exist"),
1659 AP_INIT_TAKE1("ShibRequireSessionWith", (config_fn_t)ap_set_string_slot,
1660 (void *) offsetof (shib_dir_config, szRequireWith),
1661 OR_AUTHCFG, "Initiates a new session if one does not exist using a specific SessionInitiator"),
1662 AP_INIT_FLAG("ShibExportAssertion", (config_fn_t)ap_set_flag_slot,
1663 (void *) offsetof (shib_dir_config, bExportAssertion),
1664 OR_AUTHCFG, "Export SAML attribute assertion(s) to Shib-Attributes header"),
1665 AP_INIT_TAKE1("ShibRedirectToSSL", (config_fn_t)ap_set_string_slot,
1666 (void *) offsetof (shib_dir_config, szRedirectToSSL),
1667 OR_AUTHCFG, "Redirect non-SSL requests to designated port"),
1668 AP_INIT_TAKE1("AuthGroupFile", (config_fn_t)shib_ap_set_file_slot,
1669 (void *) offsetof (shib_dir_config, szAuthGrpFile),
1670 OR_AUTHCFG, "Text file containing group names and member user IDs"),
1671 AP_INIT_FLAG("ShibRequireAll", (config_fn_t)ap_set_flag_slot,
1672 (void *) offsetof (shib_dir_config, bRequireAll),
1673 OR_AUTHCFG, "All require directives must match"),
1674 AP_INIT_FLAG("AuthzShibAuthoritative", (config_fn_t)ap_set_flag_slot,
1675 (void *) offsetof (shib_dir_config, bAuthoritative),
1676 OR_AUTHCFG, "Allow failed mod_shib htaccess authorization to fall through to other modules"),
1677 AP_INIT_FLAG("ShibUseEnvironment", (config_fn_t)ap_set_flag_slot,
1678 (void *) offsetof (shib_dir_config, bUseEnvVars),
1679 OR_AUTHCFG, "Export attributes using environment variables (default)"),
1680 AP_INIT_FLAG("ShibUseHeaders", (config_fn_t)ap_set_flag_slot,
1681 (void *) offsetof (shib_dir_config, bUseHeaders),
1682 OR_AUTHCFG, "Export attributes using custom HTTP headers"),
1687 module AP_MODULE_DECLARE_DATA mod_shib = {
1688 STANDARD20_MODULE_STUFF,
1689 create_shib_dir_config, /* create dir config */
1690 merge_shib_dir_config, /* merge dir config --- default is to override */
1691 create_shib_server_config, /* create server config */
1692 merge_shib_server_config, /* merge server config */
1693 shib_cmds, /* command table */
1694 shib_register_hooks /* register hooks */
1698 #error "unsupported Apache version"