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>
58 # include <winsock2.h>
59 # include <ws2tcpip.h>
68 #include <boost/lexical_cast.hpp>
70 // Apache specific header files
72 #include <http_config.h>
73 #include <http_protocol.h>
74 #include <http_main.h>
76 #include <http_core.h>
78 #include <http_request.h>
80 #ifndef SHIB_APACHE_13
81 #include <apr_buckets.h>
82 #include <apr_strings.h>
83 #include <apr_pools.h>
92 #include <unistd.h> // for getpid()
95 using namespace shibsp;
96 using namespace xmltooling;
97 using namespace boost;
99 using xercesc::RegularExpression;
100 using xercesc::XMLException;
102 #ifdef APLOG_USE_MODULE
103 extern "C" module AP_MODULE_DECLARE_DATA mod_shib;
104 static int* const aplog_module_index = &(mod_shib.module_index);
106 extern "C" module MODULE_VAR_EXPORT mod_shib;
110 char* g_szSHIBConfig = nullptr;
111 char* g_szSchemaDir = nullptr;
112 char* g_szPrefix = nullptr;
113 SPConfig* g_Config = nullptr;
114 string g_unsetHeaderValue,g_spoofKey;
115 bool g_checkSpoofing = true;
116 bool g_catchAll = false;
117 #ifndef SHIB_APACHE_13
118 char* g_szGSSContextKey = "mod_auth_gssapi:gss_ctx";
120 static const char* g_UserDataKey = "urn:mace:shibboleth:Apache:shib_check_user";
123 /* Apache 2.2.x headers must be accumulated and set in the output filter.
124 Apache 2.0.49+ supports the filter method.
125 Apache 1.3.x and lesser 2.0.x must write the headers directly. */
127 #if (defined(SHIB_APACHE_20) || defined(SHIB_APACHE_22) || defined(SHIB_APACHE_24)) && AP_MODULE_MAGIC_AT_LEAST(20020903,6)
128 #define SHIB_DEFERRED_HEADERS
131 /********************************************************************************/
132 // Basic Apache Configuration code.
135 // per-server module configuration structure
136 struct shib_server_config
141 // creates the per-server configuration
142 extern "C" void* create_shib_server_config(SH_AP_POOL* p, server_rec* s)
144 shib_server_config* sc=(shib_server_config*)ap_pcalloc(p,sizeof(shib_server_config));
145 sc->szScheme = nullptr;
149 // overrides server configuration in virtual servers
150 extern "C" void* merge_shib_server_config (SH_AP_POOL* p, void* base, void* sub)
152 shib_server_config* sc=(shib_server_config*)ap_pcalloc(p,sizeof(shib_server_config));
153 shib_server_config* parent=(shib_server_config*)base;
154 shib_server_config* child=(shib_server_config*)sub;
157 sc->szScheme=ap_pstrdup(p,child->szScheme);
158 else if (parent->szScheme)
159 sc->szScheme=ap_pstrdup(p,parent->szScheme);
161 sc->szScheme=nullptr;
166 // per-dir module configuration structure
167 struct shib_dir_config
169 SH_AP_TABLE* tSettings; // generic table of extensible settings
172 #ifdef SHIB_APACHE_24
173 int bRequestMapperAuthz;// support RequestMapper AccessControl plugins
175 char* szAuthGrpFile; // Auth GroupFile name
176 char* szAccessControl; // path to "external" AccessControl plugin file
177 int bRequireAll; // all "known" require directives must match, otherwise OR logic
178 int bAuthoritative; // allow htaccess plugin to DECLINE when authz fails
179 int bCompatWith24; // support 2.4-reserved require logic for compatibility
182 // Content Configuration
183 char* szApplicationId; // Shib applicationId value
184 char* szRequireWith; // require a session using a specific initiator?
185 char* szRedirectToSSL; // redirect non-SSL requests to SSL port
186 int bOff; // flat-out disable all Shib processing
187 int bBasicHijack; // activate for AuthType Basic?
188 int bRequireSession; // require a session?
189 int bExportAssertion; // export SAML assertion to the environment?
190 int bUseEnvVars; // use environment?
191 int bUseHeaders; // use headers?
192 int bExpireRedirects; // expire redirects?
195 // creates per-directory config structure
196 extern "C" void* create_shib_dir_config (SH_AP_POOL* p, char* d)
198 shib_dir_config* dc=(shib_dir_config*)ap_pcalloc(p,sizeof(shib_dir_config));
199 dc->tSettings = nullptr;
200 #ifdef SHIB_APACHE_24
201 dc->bRequestMapperAuthz = -1;
203 dc->szAuthGrpFile = nullptr;
204 dc->szAccessControl = nullptr;
205 dc->bRequireAll = -1;
206 dc->bAuthoritative = -1;
207 dc->bCompatWith24 = -1;
209 dc->szApplicationId = nullptr;
210 dc->szRequireWith = nullptr;
211 dc->szRedirectToSSL = nullptr;
213 dc->bBasicHijack = -1;
214 dc->bRequireSession = -1;
215 dc->bExportAssertion = -1;
216 dc->bUseEnvVars = -1;
217 dc->bUseHeaders = -1;
218 dc->bExpireRedirects = -1;
222 // overrides server configuration in directories
223 extern "C" void* merge_shib_dir_config (SH_AP_POOL* p, void* base, void* sub)
225 shib_dir_config* dc=(shib_dir_config*)ap_pcalloc(p,sizeof(shib_dir_config));
226 shib_dir_config* parent=(shib_dir_config*)base;
227 shib_dir_config* child=(shib_dir_config*)sub;
229 // The child supersedes any matching table settings in the parent.
230 dc->tSettings = nullptr;
231 if (parent->tSettings)
232 dc->tSettings = ap_copy_table(p, parent->tSettings);
233 if (child->tSettings) {
235 ap_overlap_tables(dc->tSettings, child->tSettings, AP_OVERLAP_TABLES_SET);
237 dc->tSettings = ap_copy_table(p, child->tSettings);
240 #ifdef SHIB_APACHE_24
241 dc->bRequestMapperAuthz = ((child->bRequestMapperAuthz==-1) ? parent->bRequestMapperAuthz : child->bRequestMapperAuthz);
243 if (child->szAuthGrpFile)
244 dc->szAuthGrpFile=ap_pstrdup(p,child->szAuthGrpFile);
245 else if (parent->szAuthGrpFile)
246 dc->szAuthGrpFile=ap_pstrdup(p,parent->szAuthGrpFile);
248 dc->szAuthGrpFile=nullptr;
250 if (child->szAccessControl)
251 dc->szAccessControl=ap_pstrdup(p,child->szAccessControl);
252 else if (parent->szAccessControl)
253 dc->szAccessControl=ap_pstrdup(p,parent->szAccessControl);
255 dc->szAccessControl=nullptr;
258 if (child->szApplicationId)
259 dc->szApplicationId=ap_pstrdup(p,child->szApplicationId);
260 else if (parent->szApplicationId)
261 dc->szApplicationId=ap_pstrdup(p,parent->szApplicationId);
263 dc->szApplicationId=nullptr;
265 if (child->szRequireWith)
266 dc->szRequireWith=ap_pstrdup(p,child->szRequireWith);
267 else if (parent->szRequireWith)
268 dc->szRequireWith=ap_pstrdup(p,parent->szRequireWith);
270 dc->szRequireWith=nullptr;
272 if (child->szRedirectToSSL)
273 dc->szRedirectToSSL=ap_pstrdup(p,child->szRedirectToSSL);
274 else if (parent->szRedirectToSSL)
275 dc->szRedirectToSSL=ap_pstrdup(p,parent->szRedirectToSSL);
277 dc->szRedirectToSSL=nullptr;
279 dc->bOff = ((child->bOff==-1) ? parent->bOff : child->bOff);
280 dc->bBasicHijack = ((child->bBasicHijack==-1) ? parent->bBasicHijack : child->bBasicHijack);
281 dc->bRequireSession = ((child->bRequireSession==-1) ? parent->bRequireSession : child->bRequireSession);
282 dc->bExportAssertion = ((child->bExportAssertion==-1) ? parent->bExportAssertion : child->bExportAssertion);
283 #ifndef SHIB_APACHE_24
284 dc->bRequireAll = ((child->bRequireAll==-1) ? parent->bRequireAll : child->bRequireAll);
285 dc->bAuthoritative = ((child->bAuthoritative==-1) ? parent->bAuthoritative : child->bAuthoritative);
286 dc->bCompatWith24 = ((child->bCompatWith24==-1) ? parent->bCompatWith24 : child->bCompatWith24);
288 dc->bUseEnvVars = ((child->bUseEnvVars==-1) ? parent->bUseEnvVars : child->bUseEnvVars);
289 dc->bUseHeaders = ((child->bUseHeaders==-1) ? parent->bUseHeaders : child->bUseHeaders);
290 dc->bExpireRedirects = ((child->bExpireRedirects==-1) ? parent->bExpireRedirects : child->bExpireRedirects);
294 class ShibTargetApache; // forward decl
296 // per-request module structure
297 struct shib_request_config
299 SH_AP_TABLE* env; // environment vars
300 #ifdef SHIB_DEFERRED_HEADERS
301 SH_AP_TABLE* hdr_out; // headers to browser
303 #ifndef SHIB_APACHE_13
304 ShibTargetApache* sta; // SP per-request structure wrapped around Apache's request
308 // create a request record
309 static shib_request_config* init_request_config(request_rec *r)
311 shib_request_config* rc = (shib_request_config*)ap_pcalloc(r->pool,sizeof(shib_request_config));
312 memset(rc, 0, sizeof(shib_request_config));
313 ap_set_module_config(r->request_config, &mod_shib, rc);
314 ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, SH_AP_R(r), "shib_init_rc");
318 class ShibTargetApache : public AbstractSPRequest
319 #if defined(SHIBSP_HAVE_GSSAPI) && !defined(SHIB_APACHE_13)
323 mutable string m_body;
324 mutable bool m_gotBody,m_firsttime;
325 mutable vector<string> m_certs;
326 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) : AbstractSPRequest(SHIBSP_LOGCAT".Apache"),
336 m_gotBody(false),m_firsttime(true), m_handler(false), m_req(req), m_dc(nullptr), m_sc(nullptr), m_rc(nullptr) {
338 virtual ~ShibTargetApache() {}
340 bool isInitialized() const {
341 return (m_sc != nullptr);
344 bool init(bool handler, bool check_user) {
347 return !check_user; // only initialize once
348 m_sc = (shib_server_config*)ap_get_module_config(m_req->server->module_config, &mod_shib);
349 m_dc = (shib_dir_config*)ap_get_module_config(m_req->per_dir_config, &mod_shib);
350 m_rc = (shib_request_config*)ap_get_module_config(m_req->request_config, &mod_shib);
352 setRequestURI(m_req->unparsed_uri);
354 if (check_user && m_dc->bUseHeaders == 1) {
355 // Try and see if this request was already processed, to skip spoof checking.
356 if (!ap_is_initial_req(m_req)) {
359 else if (!g_spoofKey.empty()) {
360 const char* hdr = ap_table_get(m_req->headers_in, "Shib-Spoof-Check");
361 if (hdr && g_spoofKey == hdr)
365 log(SPDebug, "shib_check_user running more than once");
370 const char* getScheme() const {
371 return m_sc->szScheme ? m_sc->szScheme : ap_http_method(m_req);
373 bool isSecure() const {
374 return HTTPRequest::isSecure();
376 const char* getHostname() const {
377 return ap_get_server_name(m_req);
379 int getPort() const {
380 return ap_get_server_port(m_req);
382 const char* getMethod() const {
383 return m_req->method;
385 string getContentType() const {
386 const char* type = ap_table_get(m_req->headers_in, "Content-Type");
387 return type ? type : "";
389 long getContentLength() const {
390 return m_gotBody ? m_body.length() : m_req->remaining;
392 string getRemoteAddr() const {
393 string ret = AbstractSPRequest::getRemoteAddr();
396 #ifdef SHIB_APACHE_24
397 return m_req->useragent_ip;
399 return m_req->connection->remote_ip;
402 void log(SPLogLevel level, const string& msg) const {
403 AbstractSPRequest::log(level,msg);
406 (level == SPDebug ? APLOG_DEBUG :
407 (level == SPInfo ? APLOG_INFO :
408 (level == SPWarn ? APLOG_WARNING :
409 (level == SPError ? APLOG_ERR : APLOG_CRIT))))|APLOG_NOERRNO,
415 const char* getQueryString() const { return m_req->args; }
416 const char* getRequestBody() const {
417 if (m_gotBody || m_req->method_number==M_GET)
418 return m_body.c_str();
419 #ifdef SHIB_APACHE_13
420 // Read the posted data
421 if (ap_setup_client_block(m_req, REQUEST_CHUNKED_DECHUNK) != OK) {
423 log(SPError, "Apache function (setup_client_block) failed while reading request body.");
424 return m_body.c_str();
426 if (!ap_should_client_block(m_req)) {
428 log(SPError, "Apache function (should_client_block) failed while reading request body.");
429 return m_body.c_str();
431 if (m_req->remaining > 1024*1024)
432 throw opensaml::SecurityPolicyException("Blocked request body larger than 1M size limit.");
435 char buff[HUGE_STRING_LEN];
436 ap_hard_timeout("[mod_shib] getRequestBody", m_req);
437 while ((len=ap_get_client_block(m_req, buff, sizeof(buff))) > 0) {
438 ap_reset_timeout(m_req);
439 m_body.append(buff, len);
441 ap_kill_timeout(m_req);
446 apr_bucket_brigade* bb = apr_brigade_create(m_req->pool, m_req->connection->bucket_alloc);
449 apr_status_t rv = ap_get_brigade(m_req->input_filters, bb, AP_MODE_READBYTES, APR_BLOCK_READ, HUGE_STRING_LEN);
450 if (rv != APR_SUCCESS) {
451 log(SPError, "Apache function (ap_get_brigade) failed while reading request body.");
455 for (bucket = APR_BRIGADE_FIRST(bb); bucket != APR_BRIGADE_SENTINEL(bb); bucket = APR_BUCKET_NEXT(bucket)) {
456 if (APR_BUCKET_IS_EOS(bucket)) {
461 /* We can't do much with this. */
462 if (APR_BUCKET_IS_FLUSH(bucket))
466 apr_bucket_read(bucket, &data, &len, APR_BLOCK_READ);
468 m_body.append(data, len);
470 apr_brigade_cleanup(bb);
472 apr_brigade_destroy(bb);
475 return m_body.c_str();
477 const char* getParameter(const char* name) const {
478 return AbstractSPRequest::getParameter(name);
480 vector<const char*>::size_type getParameters(const char* name, vector<const char*>& values) const {
481 return AbstractSPRequest::getParameters(name, values);
483 void clearHeader(const char* rawname, const char* cginame) {
484 if (m_dc->bUseHeaders == 1) {
485 // ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(m_req), "shib_clear_header: hdr\n");
486 if (g_checkSpoofing && m_firsttime) {
487 if (m_allhttp.empty()) {
488 // First time, so populate set with "CGI" versions of client-supplied headers.
489 #ifdef SHIB_APACHE_13
490 array_header *hdrs_arr = ap_table_elts(m_req->headers_in);
491 table_entry *hdrs = (table_entry *) hdrs_arr->elts;
493 const apr_array_header_t *hdrs_arr = apr_table_elts(m_req->headers_in);
494 const apr_table_entry_t *hdrs = (const apr_table_entry_t *) hdrs_arr->elts;
496 for (int i = 0; i < hdrs_arr->nelts; ++i) {
499 string cgiversion("HTTP_");
500 const char* pch = hdrs[i].key;
502 cgiversion += (isalnum(*pch) ? toupper(*pch) : '_');
505 m_allhttp.insert(cgiversion);
509 if (m_allhttp.count(cginame) > 0)
510 throw opensaml::SecurityPolicyException("Attempt to spoof header ($1) was detected.", params(1, rawname));
512 ap_table_unset(m_req->headers_in, rawname);
513 ap_table_set(m_req->headers_in, rawname, g_unsetHeaderValue.c_str());
516 void setHeader(const char* name, const char* value) {
517 if (m_dc->bUseEnvVars != 0) {
519 // this happens on subrequests
520 // ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(m_req), "shib_setheader: no_m_rc\n");
521 m_rc = init_request_config(m_req);
524 m_rc->env = ap_make_table(m_req->pool, 10);
525 // ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(m_req), "shib_set_env: %s=%s\n", name, value?value:"Null");
526 ap_table_set(m_rc->env, name, value ? value : "");
528 if (m_dc->bUseHeaders == 1)
529 ap_table_set(m_req->headers_in, name, value);
531 string getHeader(const char* name) const {
532 const char* hdr = ap_table_get(m_req->headers_in, name);
533 return string(hdr ? hdr : "");
535 string getSecureHeader(const char* name) const {
536 if (m_dc->bUseEnvVars != 0) {
538 if (m_rc && m_rc->env)
539 hdr = ap_table_get(m_rc->env, name);
542 return string(hdr ? hdr : "");
544 return getHeader(name);
546 void setRemoteUser(const char* user) {
547 SH_AP_USER(m_req) = user ? ap_pstrdup(m_req->pool, user) : nullptr;
548 if (m_dc->bUseHeaders == 1) {
550 ap_table_set(m_req->headers_in, "REMOTE_USER", user);
553 ap_table_unset(m_req->headers_in, "REMOTE_USER");
554 ap_table_set(m_req->headers_in, "REMOTE_USER", g_unsetHeaderValue.c_str());
558 string getRemoteUser() const {
559 return string(SH_AP_USER(m_req) ? SH_AP_USER(m_req) : "");
561 void setAuthType(const char* authtype) {
562 if (authtype && m_dc->bBasicHijack == 1)
564 SH_AP_AUTH_TYPE(m_req) = authtype ? ap_pstrdup(m_req->pool, authtype) : nullptr;
566 string getAuthType() const {
567 return string(SH_AP_AUTH_TYPE(m_req) ? SH_AP_AUTH_TYPE(m_req) : "");
569 void setContentType(const char* type) {
570 m_req->content_type = ap_psprintf(m_req->pool, "%s", type);
572 void setResponseHeader(const char* name, const char* value) {
573 HTTPResponse::setResponseHeader(name, value);
574 #ifdef SHIB_DEFERRED_HEADERS
576 // this happens on subrequests
577 m_rc = init_request_config(m_req);
580 m_rc->hdr_out = ap_make_table(m_req->pool, 5);
581 ap_table_add(m_rc->hdr_out, name, value);
585 ap_table_add(m_req->err_headers_out, name, value);
587 long sendResponse(istream& in, long status) {
588 if (status != XMLTOOLING_HTTP_STATUS_OK)
589 m_req->status = status;
590 ap_send_http_header(m_req);
594 ap_rwrite(buf,in.gcount(),m_req);
596 #if (defined(SHIB_APACHE_20) || defined(SHIB_APACHE_22) || defined(SHIB_APACHE_24))
597 if (status != XMLTOOLING_HTTP_STATUS_OK && status != XMLTOOLING_HTTP_STATUS_ERROR)
602 long sendRedirect(const char* url) {
603 HTTPResponse::sendRedirect(url);
604 ap_table_set(m_req->headers_out, "Location", url);
605 if (m_dc->bExpireRedirects != 0) {
606 ap_table_set(m_req->err_headers_out, "Expires", "Wed, 01 Jan 1997 12:00:00 GMT");
607 ap_table_set(m_req->err_headers_out, "Cache-Control", "private,no-store,no-cache,max-age=0");
611 const vector<string>& getClientCertificates() const {
612 if (m_certs.empty()) {
613 const char* cert = ap_table_get(m_req->subprocess_env, "SSL_CLIENT_CERT");
615 m_certs.push_back(cert);
618 cert = ap_table_get(m_req->subprocess_env, ap_psprintf(m_req->pool, "SSL_CLIENT_CERT_CHAIN_%d", i++));
620 m_certs.push_back(cert);
625 long returnDecline(void) { return DECLINED; }
626 long returnOK(void) { return OK; }
627 #if defined(SHIBSP_HAVE_GSSAPI) && !defined(SHIB_APACHE_13)
628 gss_ctx_id_t getGSSContext() const {
629 gss_ctx_id_t ctx = GSS_C_NO_CONTEXT;
630 apr_pool_userdata_get((void**)&ctx, g_szGSSContextKey, m_req->pool);
636 /********************************************************************************/
639 #ifndef SHIB_APACHE_13
640 extern "C" apr_status_t shib_request_cleanup(void* r)
643 delete reinterpret_cast<ShibTargetApache*>(r);
648 // Initial look at a request - create the per-request structure
649 static int shib_post_read(request_rec *r)
651 shib_request_config* rc = init_request_config(r);
652 #ifdef SHIB_APACHE_24
653 rc->sta = new ShibTargetApache(r);
654 apr_pool_cleanup_register(r->pool, rc->sta, shib_request_cleanup, apr_pool_cleanup_null);
659 // Performs authentication and enforce session requirements.
660 // Also does header/env export from session, and will dispatch
661 // SP handler requests if it detects a handler URL.
662 extern "C" int shib_check_user(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 ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, SH_AP_R(r), "shib_check_user(%d): ENTER", (int)getpid());
670 string threadid("[");
671 threadid += lexical_cast<string>(getpid()) + "] shib_check_user";
672 xmltooling::NDC ndc(threadid.c_str());
675 #ifndef SHIB_APACHE_24
676 ShibTargetApache sta(r);
677 ShibTargetApache* psta = &sta;
679 shib_request_config* rc = (shib_request_config*)ap_get_module_config(r->request_config, &mod_shib);
680 if (!rc || !rc->sta) {
681 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "shib_check_user found no per-request structure");
684 ShibTargetApache* psta = rc->sta;
686 if (!psta->init(false, true)) {
687 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "shib_check_user unable to initialize SP request object");
691 // Check user authentication and export information, then set the handler bypass
692 pair<bool,long> res = psta->getServiceProvider().doAuthentication(*psta, true);
693 apr_pool_userdata_setn((const void*)42,g_UserDataKey,nullptr,r->pool);
694 // If directed, install a spoof key to recognize when we've already cleared headers.
695 if (!g_spoofKey.empty() && (((shib_dir_config*)ap_get_module_config(r->per_dir_config, &mod_shib))->bUseHeaders==1))
696 ap_table_set(r->headers_in, "Shib-Spoof-Check", g_spoofKey.c_str());
698 #ifdef SHIB_APACHE_24
699 // This is insane, but Apache's internal request.c logic insists that an auth module
700 // returning OK MUST set r->user to avoid a failure. But they check for NULL and not
701 // for an empty string. If this turns out to cause trouble, there's no solution except
702 // to set a dummy ID any time it's not set.
703 if (res.second == OK && !r->user)
709 // user auth was okay -- export the session data now
710 res = psta->getServiceProvider().doExport(*psta);
712 #ifdef SHIB_APACHE_24
713 // See above for explanation of this hack.
714 if (res.second == OK && !r->user)
720 #ifdef SHIB_APACHE_24
721 // See above for explanation of this hack.
727 catch (std::exception& e) {
728 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "shib_check_user threw an exception: %s", e.what());
732 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "shib_check_user threw an unknown exception!");
739 // Runs SP handler requests when invoked directly.
740 extern "C" int shib_handler(request_rec* r)
742 // Short-circuit entirely?
743 if (((shib_dir_config*)ap_get_module_config(r->per_dir_config, &mod_shib))->bOff == 1)
746 string threadid("[");
747 threadid += lexical_cast<string>(getpid()) + "] shib_handler";
748 xmltooling::NDC ndc(threadid.c_str());
750 #ifndef SHIB_APACHE_13
751 // With 2.x, this handler always runs, though last.
752 // We check if shib_check_user ran, because it will detect a handler request
753 // and dispatch it directly.
755 apr_pool_userdata_get(&data,g_UserDataKey,r->pool);
756 if (data==(const void*)42) {
757 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_handler skipped since check_user ran");
762 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_handler(%d): ENTER: %s", (int)getpid(), r->handler);
765 #ifndef SHIB_APACHE_24
766 ShibTargetApache sta(r);
767 ShibTargetApache* psta = &sta;
769 shib_request_config* rc = (shib_request_config*)ap_get_module_config(r->request_config, &mod_shib);
770 if (!rc || !rc->sta) {
771 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "shib_handler found no per-request structure");
774 ShibTargetApache* psta = rc->sta;
776 if (!psta->init(true, false)) {
777 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "shib_handler unable to initialize SP request object");
781 pair<bool,long> res = psta->getServiceProvider().doHandler(*psta);
782 if (res.first) return res.second;
784 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "doHandler() did not do anything.");
787 catch (std::exception& e) {
788 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "shib_handler threw an exception: %s", e.what());
792 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "shib_handler threw an unknown exception!");
799 // This performs authorization functions to limit access.
800 // On all versions, this runs any RequestMap-attached plugins.
801 // For pre-2.4 versions, the RequestMap will always find an htAccess plugin
802 // that runs code to parse and enforce Apache Require rules.
803 // On 2.4, we have to short-circuit that and let Apache run callbacks
804 // for each Require rule we handle.
805 extern "C" int shib_auth_checker(request_rec* r)
807 // Short-circuit entirely?
808 shib_dir_config* dc = (shib_dir_config*)ap_get_module_config(r->per_dir_config, &mod_shib);
810 #ifdef SHIB_APACHE_24
811 || dc->bRequestMapperAuthz == 0 // this allows for bypass of the full auth_checker hook if only htaccess is used
817 ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, SH_AP_R(r), "shib_auth_checker(%d): ENTER", (int)getpid());
819 string threadid("[");
820 threadid += lexical_cast<string>(getpid()) + "] shib_auth_checker";
821 xmltooling::NDC ndc(threadid.c_str());
824 #ifndef SHIB_APACHE_24
825 ShibTargetApache sta(r);
826 ShibTargetApache* psta = &sta;
828 shib_request_config* rc = (shib_request_config*)ap_get_module_config(r->request_config, &mod_shib);
829 if (!rc || !rc->sta) {
830 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "shib_auth_checker found no per-request structure");
833 ShibTargetApache* psta = rc->sta;
835 if (!psta->init(false, false)) {
836 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "shib_auth_checker unable to initialize SP request object");
840 pair<bool,long> res = psta->getServiceProvider().doAuthorization(*psta);
841 if (res.first) return res.second;
843 // The SP method should always return true, so if we get this far, something unusual happened.
844 // Just let Apache (or some other module) decide what to do.
847 catch (std::exception& e) {
848 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "shib_auth_checker threw an exception: %s", e.what());
852 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "shib_auth_checker threw an unknown exception!");
859 // Overlays environment variables on top of subprocess table.
860 extern "C" int shib_fixups(request_rec* r)
862 shib_dir_config *dc = (shib_dir_config*)ap_get_module_config(r->per_dir_config, &mod_shib);
863 if (dc->bOff==1 || dc->bUseEnvVars==0)
866 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_fixup(%d): ENTER", (int)getpid());
868 shib_request_config *rc = (shib_request_config*)ap_get_module_config(r->request_config, &mod_shib);
869 if (rc==nullptr || rc->env==nullptr || ap_is_empty_table(rc->env))
872 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_fixup adding %d vars", ap_table_elts(rc->env)->nelts);
873 r->subprocess_env = ap_overlay_tables(r->pool, r->subprocess_env, rc->env);
879 // Access control plugin that enforces pre-2.4 htaccess rules.
880 // Post-2.4, we have to register individual methods to respond
881 // to each require rule we want to handle, and have those call
882 // into these methods directly.
883 class htAccessControl : virtual public AccessControl
887 ~htAccessControl() {}
888 Lockable* lock() {return this;}
890 aclresult_t authorized(const SPRequest& request, const Session* session) const;
892 aclresult_t doAccessControl(const ShibTargetApache& sta, const Session* session, const char* plugin) const;
893 aclresult_t doUser(const ShibTargetApache& sta, const char* params) const;
894 #ifndef SHIB_APACHE_24
895 aclresult_t doGroup(const ShibTargetApache& sta, const char* params) const;
897 aclresult_t doAuthnContext(const ShibTargetApache& sta, const char* acRef, const char* params) const;
898 aclresult_t doShibAttr(const ShibTargetApache& sta, const Session* session, const char* rule, const char* params) const;
901 bool checkAttribute(const SPRequest& request, const Attribute* attr, const char* toMatch, RegularExpression* re) const;
904 AccessControl* htAccessFactory(const xercesc::DOMElement* const & e)
906 return new htAccessControl();
909 AccessControl::aclresult_t htAccessControl::doAccessControl(const ShibTargetApache& sta, const Session* session, const char* plugin) const
911 aclresult_t result = shib_acl_false;
913 ifstream aclfile(plugin);
915 throw ConfigurationException("Unable to open access control file ($1).", params(1, plugin));
916 xercesc::DOMDocument* acldoc = XMLToolingConfig::getConfig().getParser().parse(aclfile);
917 XercesJanitor<xercesc::DOMDocument> docjanitor(acldoc);
918 static XMLCh _type[] = UNICODE_LITERAL_4(t,y,p,e);
919 string t(XMLHelper::getAttrString(acldoc ? acldoc->getDocumentElement() : nullptr, nullptr, _type));
921 throw ConfigurationException("Missing type attribute in AccessControl plugin configuration.");
922 scoped_ptr<AccessControl> aclplugin(SPConfig::getConfig().AccessControlManager.newPlugin(t.c_str(), acldoc->getDocumentElement()));
923 Locker acllock(aclplugin.get());
924 result = aclplugin->authorized(sta, session);
926 catch (std::exception& ex) {
927 sta.log(SPRequest::SPError, ex.what());
932 AccessControl::aclresult_t htAccessControl::doUser(const ShibTargetApache& sta, const char* params) const
935 bool negated = false;
937 const char* w = ap_getword_conf(sta.m_req->pool, ¶ms);
942 else if (*w == '!') {
943 // A negated rule presumes success unless a match is found.
950 // Figure out if there's a match.
954 // To do regex matching, we have to convert from UTF-8.
955 auto_arrayptr<XMLCh> trans(fromUTF8(w));
956 RegularExpression re(trans.get());
957 auto_arrayptr<XMLCh> trans2(fromUTF8(sta.getRemoteUser().c_str()));
958 match = re.matches(trans2.get());
960 catch (XMLException& ex) {
961 auto_ptr_char tmp(ex.getMessage());
962 sta.log(SPRequest::SPError,
963 string("htaccess plugin caught exception while parsing regular expression (") + w + "): " + tmp.get());
966 else if (sta.getRemoteUser() == w) {
971 if (sta.isPriorityEnabled(SPRequest::SPDebug))
972 sta.log(SPRequest::SPDebug,
973 string("htaccess: require user ") + (negated ? "rejecting (" : "accepting (") + sta.getRemoteUser() + ")");
974 return (negated ? shib_acl_false : shib_acl_true);
977 return (negated ? shib_acl_true : shib_acl_false);
980 #ifndef SHIB_APACHE_24
981 static SH_AP_TABLE* groups_for_user(request_rec* r, const char* user, char* grpfile)
984 SH_AP_TABLE* grps=ap_make_table(r->pool,15);
985 char l[MAX_STRING_LEN];
986 const char *group_name, *ll, *w;
988 #ifdef SHIB_APACHE_13
989 if (!(f=ap_pcfg_openfile(r->pool,grpfile))) {
991 if (ap_pcfg_openfile(&f,r->pool,grpfile) != APR_SUCCESS) {
993 ap_log_rerror(APLOG_MARK,APLOG_DEBUG,SH_AP_R(r),"groups_for_user() could not open group file: %s\n",grpfile);
998 #ifdef SHIB_APACHE_13
999 sp=ap_make_sub_pool(r->pool);
1001 if (apr_pool_create(&sp,r->pool) != APR_SUCCESS) {
1002 ap_log_rerror(APLOG_MARK,APLOG_ERR,0,r,
1003 "groups_for_user() could not create a subpool");
1008 while (!(ap_cfg_getline(l,MAX_STRING_LEN,f))) {
1009 if ((*l=='#') || (!*l))
1013 group_name = ap_getword(sp,&ll,':');
1015 w=ap_getword_conf(sp,&ll);
1016 if (!strcmp(w,user)) {
1017 ap_table_setn(grps,ap_pstrdup(r->pool,group_name),"in");
1022 ap_cfg_closefile(f);
1023 ap_destroy_pool(sp);
1027 AccessControl::aclresult_t htAccessControl::doGroup(const ShibTargetApache& sta, const char* params) const
1029 SH_AP_TABLE* grpstatus = nullptr;
1030 if (sta.m_dc->szAuthGrpFile) {
1031 if (sta.isPriorityEnabled(SPRequest::SPDebug))
1032 sta.log(SPRequest::SPDebug, string("htaccess plugin using groups file: ") + sta.m_dc->szAuthGrpFile);
1033 grpstatus = groups_for_user(sta.m_req, sta.getRemoteUser().c_str(), sta.m_dc->szAuthGrpFile);
1036 bool negated = false;
1038 const char* w = ap_getword_conf(sta.m_req->pool, ¶ms);
1040 // A negated rule presumes success unless a match is found.
1045 if (grpstatus && ap_table_get(grpstatus, w)) {
1046 // If we matched, then we're done with this rule either way and we flip status to reflect the outcome.
1047 sta.log(SPRequest::SPDebug, string("htaccess: require group ") + (negated ? "rejecting (" : "accepting (") + w + ")");
1048 return (negated ? shib_acl_false : shib_acl_true);
1052 return (negated ? shib_acl_true : shib_acl_false);
1056 AccessControl::aclresult_t htAccessControl::doAuthnContext(const ShibTargetApache& sta, const char* ref, const char* params) const
1059 bool regexp = false;
1060 bool negated = false;
1061 while (ref && *params) {
1062 const char* w = ap_getword_conf(sta.m_req->pool, ¶ms);
1067 else if (*w == '!') {
1068 // A negated rule presumes success unless a match is found.
1075 // Figure out if there's a match.
1079 RegularExpression re(w);
1080 match = re.matches(ref);
1082 catch (XMLException& ex) {
1083 auto_ptr_char tmp(ex.getMessage());
1084 sta.log(SPRequest::SPError,
1085 string("htaccess plugin caught exception while parsing regular expression (") + w + "): " + tmp.get());
1088 else if (!strcmp(w, ref)) {
1093 if (sta.isPriorityEnabled(SPRequest::SPDebug))
1094 sta.log(SPRequest::SPDebug,
1095 string("htaccess: require authnContext ") + (negated ? "rejecting (" : "accepting (") + ref + ")");
1096 return (negated ? shib_acl_false : shib_acl_true);
1099 return (negated ? shib_acl_true : shib_acl_false);
1102 if (sta.isPriorityEnabled(SPRequest::SPDebug))
1103 sta.log(SPRequest::SPDebug, "htaccess: require authnContext rejecting session with no context associated");
1104 return shib_acl_false;
1107 bool htAccessControl::checkAttribute(const SPRequest& request, const Attribute* attr, const char* toMatch, RegularExpression* re) const
1109 bool caseSensitive = attr->isCaseSensitive();
1110 const vector<string>& vals = attr->getSerializedValues();
1111 for (vector<string>::const_iterator v = vals.begin(); v != vals.end(); ++v) {
1113 auto_arrayptr<XMLCh> trans(fromUTF8(v->c_str()));
1114 if (re->matches(trans.get())) {
1115 if (request.isPriorityEnabled(SPRequest::SPDebug))
1116 request.log(SPRequest::SPDebug, string("htaccess: expecting regexp ") + toMatch + ", got " + *v + ": acccepted");
1120 else if ((caseSensitive && *v == toMatch) || (!caseSensitive && !strcasecmp(v->c_str(), toMatch))) {
1121 if (request.isPriorityEnabled(SPRequest::SPDebug))
1122 request.log(SPRequest::SPDebug, string("htaccess: expecting ") + toMatch + ", got " + *v + ": accepted");
1125 else if (request.isPriorityEnabled(SPRequest::SPDebug)) {
1126 request.log(SPRequest::SPDebug, string("htaccess: expecting ") + toMatch + ", got " + *v + ": rejected");
1132 AccessControl::aclresult_t htAccessControl::doShibAttr(const ShibTargetApache& sta, const Session* session, const char* rule, const char* params) const
1134 #ifndef SHIB_APACHE_24
1135 // Look for the new shib-attr placeholder and move past it.
1136 if (sta.m_dc->bCompatWith24 == 1 && rule && !strcmp(rule, "shib-attr")) {
1138 rule = ap_getword_conf(sta.m_req->pool, ¶ms);
1142 // Find the attribute(s) matching the require rule.
1143 pair<multimap<string,const Attribute*>::const_iterator,multimap<string,const Attribute*>::const_iterator> attrs =
1144 session->getIndexedAttributes().equal_range(rule ? rule : "");
1146 bool regexp = false;
1147 while (attrs.first != attrs.second && *params) {
1148 const char* w = ap_getword_conf(sta.m_req->pool, ¶ms);
1155 scoped_ptr<RegularExpression> re;
1157 auto_arrayptr<XMLCh> trans(fromUTF8(w));
1158 re.reset(new xercesc::RegularExpression(trans.get()));
1161 pair<multimap<string,const Attribute*>::const_iterator,multimap<string,const Attribute*>::const_iterator> attrs2(attrs);
1162 for (; attrs2.first != attrs2.second; ++attrs2.first) {
1163 if (checkAttribute(sta, attrs2.first->second, w, regexp ? re.get() : nullptr)) {
1164 return shib_acl_true;
1168 catch (XMLException& ex) {
1169 auto_ptr_char tmp(ex.getMessage());
1170 sta.log(SPRequest::SPError, string("htaccess plugin caught exception while parsing regular expression (") + w + "): " + tmp.get());
1173 return shib_acl_false;
1176 AccessControl::aclresult_t htAccessControl::authorized(const SPRequest& request, const Session* session) const
1178 #ifdef SHIB_APACHE_24
1179 // We should never be invoked in 2.4 as an SP plugin.
1180 throw ConfigurationException("Save my walrus!");
1182 // Make sure the object is our type.
1183 const ShibTargetApache* sta=dynamic_cast<const ShibTargetApache*>(&request);
1185 throw ConfigurationException("Request wrapper object was not of correct type.");
1187 int m = sta->m_req->method_number;
1188 bool method_restricted = false;
1191 const array_header* reqs_arr = ap_requires(sta->m_req);
1193 return shib_acl_indeterminate; // should never happen
1195 // Check for an "embedded" AccessControl plugin.
1196 if (sta->m_dc->szAccessControl) {
1197 aclresult_t result = doAccessControl(*sta, session, sta->m_dc->szAccessControl);
1198 if (result == shib_acl_true && sta->m_dc->bRequireAll != 1) {
1199 // If we're not insisting that all rules be met, then we're done.
1200 request.log(SPRequest::SPDebug, "htaccess: embedded AccessControl plugin was successful, granting access");
1201 return shib_acl_true;
1203 else if (result != shib_acl_true && sta->m_dc->bRequireAll == 1) {
1204 // If we're insisting that all rules be met, which is not something Apache really handles well,
1205 // then we either return false or indeterminate based on the authoritative option, which defaults on.
1206 if (sta->m_dc->bAuthoritative != 0) {
1207 request.log(SPRequest::SPDebug, "htaccess: embedded AccessControl plugin was unsuccessful, denying access");
1208 return shib_acl_false;
1211 request.log(SPRequest::SPDebug, "htaccess: embedded AccessControl plugin was unsuccessful but not authoritative, leaving it up to Apache");
1212 return shib_acl_indeterminate;
1216 require_line* reqs = (require_line*)reqs_arr->elts;
1218 for (int x = 0; x < reqs_arr->nelts; ++x) {
1219 // This rule should be completely ignored, the method doesn't fit.
1220 // The rule just doesn't exist for our purposes.
1221 if (!(reqs[x].method_mask & (1 << m)))
1224 method_restricted = true; // this lets us know at the end that at least one rule was potentially enforcable.
1226 // Tracks status of this rule's evaluation.
1227 bool status = false;
1229 string remote_user = request.getRemoteUser();
1231 t = reqs[x].requirement;
1232 w = ap_getword_white(sta->m_req->pool, &t);
1234 if (!strcasecmp(w,"shibboleth")) {
1235 // This is a dummy rule needed because Apache conflates authn and authz.
1236 // Without some require rule, AuthType is ignored and no check_user hooks run.
1238 // We evaluate to false if ShibAccessControl is used and ShibRequireAll is off.
1239 // This allows actual rules to dictate the result, since ShibAccessControl returned
1240 // non-true, and if nothing else is used, access will be denied.
1241 if (!sta->m_dc->szAccessControl || sta->m_dc->bRequireAll == 1) {
1242 // We evaluate to true, because ShibRequireAll is enabled (so a true is just a no-op)
1243 // or because there was no other AccessControl rule in place, so this may be the only
1248 else if (!strcmp(w,"valid-user") && session) {
1249 request.log(SPRequest::SPDebug, "htaccess: accepting valid-user based on active session");
1252 else if (!strcmp(w,"user") && !remote_user.empty()) {
1253 status = (doUser(*sta, t) == shib_acl_true);
1255 else if (!strcmp(w,"group") && !remote_user.empty()) {
1256 status = (doGroup(*sta, t) == shib_acl_true);
1258 else if (!strcmp(w,"authnContextClassRef") || !strcmp(w,"authnContextDeclRef")) {
1259 const char* ref = !strcmp(w, "authnContextClassRef") ? session->getAuthnContextClassRef() : session->getAuthnContextDeclRef();
1260 status = (doAuthnContext(*sta, ref, t) == shib_acl_true);
1262 else if (!session) {
1263 request.log(SPRequest::SPError, string("htaccess: require ") + w + " not given a valid session, are you using lazy sessions?");
1265 else if (sta->m_dc->bCompatWith24 == 1 && !strcmp(w,"shib-plugin")) {
1266 w = ap_getword_conf(sta->m_req->pool, &t);
1268 status = (doAccessControl(*sta, session, w) == shib_acl_true);
1272 status = (doShibAttr(*sta, session, w, t) == shib_acl_true);
1275 // If status is false, we found a rule we couldn't satisfy.
1276 // Could be an unknown rule to us, or it just didn't match.
1278 if (status && sta->m_dc->bRequireAll != 1) {
1279 // If we're not insisting that all rules be met, then we're done.
1280 request.log(SPRequest::SPDebug, "htaccess: a rule was successful, granting access");
1281 return shib_acl_true;
1283 else if (!status && sta->m_dc->bRequireAll == 1) {
1284 // If we're insisting that all rules be met, which is not something Apache really handles well,
1285 // then we either return false or indeterminate based on the authoritative option, which defaults on.
1286 if (sta->m_dc->bAuthoritative != 0) {
1287 request.log(SPRequest::SPDebug, "htaccess: a rule was unsuccessful, denying access");
1288 return shib_acl_false;
1291 request.log(SPRequest::SPDebug, "htaccess: a rule was unsuccessful but not authoritative, leaving it up to Apache");
1292 return shib_acl_indeterminate;
1295 // Otherwise, we keep going. If we're requring all, then we have to check every rule.
1296 // If not we just didn't find a successful rule yet, so we keep going anyway.
1299 // If we get here, we either "failed" or we're in require all mode (but not both).
1300 // If no rules possibly apply or we insisted that all rules check out, then we're good.
1301 if (!method_restricted) {
1302 request.log(SPRequest::SPDebug, "htaccess: no rules applied to this request method, granting access");
1303 return shib_acl_true;
1305 else if (sta->m_dc->bRequireAll == 1) {
1306 request.log(SPRequest::SPDebug, "htaccess: all rules successful, granting access");
1307 return shib_acl_true;
1309 else if (sta->m_dc->bAuthoritative != 0) {
1310 request.log(SPRequest::SPDebug, "htaccess: no rules were successful, denying access");
1311 return shib_acl_false;
1314 request.log(SPRequest::SPDebug, "htaccess: no rules were successful but not authoritative, leaving it up to Apache");
1315 return shib_acl_indeterminate;
1319 class ApacheRequestMapper : public virtual RequestMapper, public virtual PropertySet
1322 ApacheRequestMapper(const xercesc::DOMElement* e);
1323 ~ApacheRequestMapper() {}
1324 Lockable* lock() { return m_mapper->lock(); }
1325 void unlock() { m_staKey->setData(nullptr); m_propsKey->setData(nullptr); m_mapper->unlock(); }
1326 Settings getSettings(const HTTPRequest& request) const;
1328 const PropertySet* getParent() const { return nullptr; }
1329 void setParent(const PropertySet*) {}
1330 pair<bool,bool> getBool(const char* name, const char* ns=nullptr) const;
1331 pair<bool,const char*> getString(const char* name, const char* ns=nullptr) const;
1332 pair<bool,const XMLCh*> getXMLString(const char* name, const char* ns=nullptr) const;
1333 pair<bool,unsigned int> getUnsignedInt(const char* name, const char* ns=nullptr) const;
1334 pair<bool,int> getInt(const char* name, const char* ns=nullptr) const;
1335 void getAll(map<string,const char*>& properties) const;
1336 const PropertySet* getPropertySet(const char* name, const char* ns=shibspconstants::ASCII_SHIB2SPCONFIG_NS) const;
1337 const xercesc::DOMElement* getElement() const;
1339 const htAccessControl& getHTAccessControl() const { return m_htaccess; }
1342 scoped_ptr<RequestMapper> m_mapper;
1343 scoped_ptr<ThreadKey> m_staKey,m_propsKey;
1344 mutable htAccessControl m_htaccess;
1347 RequestMapper* ApacheRequestMapFactory(const xercesc::DOMElement* const & e)
1349 return new ApacheRequestMapper(e);
1352 ApacheRequestMapper::ApacheRequestMapper(const xercesc::DOMElement* e)
1353 : m_mapper(SPConfig::getConfig().RequestMapperManager.newPlugin(XML_REQUEST_MAPPER,e)),
1354 m_staKey(ThreadKey::create(nullptr)), m_propsKey(ThreadKey::create(nullptr))
1358 RequestMapper::Settings ApacheRequestMapper::getSettings(const HTTPRequest& request) const
1360 Settings s = m_mapper->getSettings(request);
1361 m_staKey->setData((void*)dynamic_cast<const ShibTargetApache*>(&request));
1362 m_propsKey->setData((void*)s.first);
1363 // Only return the htAccess plugin for pre-2.4 servers.
1364 #ifdef SHIB_APACHE_24
1365 return pair<const PropertySet*,AccessControl*>(this, s.second);
1367 return pair<const PropertySet*,AccessControl*>(this, s.second ? s.second : &m_htaccess);
1371 pair<bool,bool> ApacheRequestMapper::getBool(const char* name, const char* ns) const
1373 const ShibTargetApache* sta=reinterpret_cast<const ShibTargetApache*>(m_staKey->getData());
1374 const PropertySet* s=reinterpret_cast<const PropertySet*>(m_propsKey->getData());
1376 // Override Apache-settable boolean properties.
1377 if (name && !strcmp(name,"requireSession") && sta->m_dc->bRequireSession != -1)
1378 return make_pair(true, sta->m_dc->bRequireSession==1);
1379 else if (name && !strcmp(name,"exportAssertion") && sta->m_dc->bExportAssertion != -1)
1380 return make_pair(true, sta->m_dc->bExportAssertion==1);
1381 else if (sta->m_dc->tSettings) {
1382 const char* prop = ap_table_get(sta->m_dc->tSettings, name);
1384 return make_pair(true, !strcmp(prop, "true") || !strcmp(prop, "1") || !strcmp(prop, "On"));
1387 return s ? s->getBool(name,ns) : make_pair(false,false);
1390 pair<bool,const char*> ApacheRequestMapper::getString(const char* name, const char* ns) const
1392 const ShibTargetApache* sta=reinterpret_cast<const ShibTargetApache*>(m_staKey->getData());
1393 const PropertySet* s=reinterpret_cast<const PropertySet*>(m_propsKey->getData());
1395 // Override Apache-settable string properties.
1396 if (name && !strcmp(name,"authType")) {
1397 const char* auth_type = ap_auth_type(sta->m_req);
1399 // Check for Basic Hijack
1400 if (!strcasecmp(auth_type, "basic") && sta->m_dc->bBasicHijack == 1)
1401 auth_type = "shibboleth";
1402 return make_pair(true, auth_type);
1405 else if (name && !strcmp(name,"applicationId") && sta->m_dc->szApplicationId)
1406 return pair<bool,const char*>(true,sta->m_dc->szApplicationId);
1407 else if (name && !strcmp(name,"requireSessionWith") && sta->m_dc->szRequireWith)
1408 return pair<bool,const char*>(true,sta->m_dc->szRequireWith);
1409 else if (name && !strcmp(name,"redirectToSSL") && sta->m_dc->szRedirectToSSL)
1410 return pair<bool,const char*>(true,sta->m_dc->szRedirectToSSL);
1411 else if (sta->m_dc->tSettings) {
1412 const char* prop = ap_table_get(sta->m_dc->tSettings, name);
1414 return make_pair(true, prop);
1417 return s ? s->getString(name,ns) : pair<bool,const char*>(false,nullptr);
1420 pair<bool,const XMLCh*> ApacheRequestMapper::getXMLString(const char* name, const char* ns) const
1422 const PropertySet* s=reinterpret_cast<const PropertySet*>(m_propsKey->getData());
1423 return s ? s->getXMLString(name,ns) : pair<bool,const XMLCh*>(false,nullptr);
1426 pair<bool,unsigned int> ApacheRequestMapper::getUnsignedInt(const char* name, const char* ns) const
1428 const ShibTargetApache* sta=reinterpret_cast<const ShibTargetApache*>(m_staKey->getData());
1429 const PropertySet* s=reinterpret_cast<const PropertySet*>(m_propsKey->getData());
1431 // Override Apache-settable int properties.
1432 if (name && !strcmp(name,"redirectToSSL") && sta->m_dc->szRedirectToSSL)
1433 return pair<bool,unsigned int>(true, strtol(sta->m_dc->szRedirectToSSL, nullptr, 10));
1434 else if (sta->m_dc->tSettings) {
1435 const char* prop = ap_table_get(sta->m_dc->tSettings, name);
1437 return pair<bool,unsigned int>(true, atoi(prop));
1440 return s ? s->getUnsignedInt(name,ns) : pair<bool,unsigned int>(false,0);
1443 pair<bool,int> ApacheRequestMapper::getInt(const char* name, const char* ns) const
1445 const ShibTargetApache* sta=reinterpret_cast<const ShibTargetApache*>(m_staKey->getData());
1446 const PropertySet* s=reinterpret_cast<const PropertySet*>(m_propsKey->getData());
1448 // Override Apache-settable int properties.
1449 if (name && !strcmp(name,"redirectToSSL") && sta->m_dc->szRedirectToSSL)
1450 return pair<bool,int>(true,atoi(sta->m_dc->szRedirectToSSL));
1451 else if (sta->m_dc->tSettings) {
1452 const char* prop = ap_table_get(sta->m_dc->tSettings, name);
1454 return make_pair(true, atoi(prop));
1457 return s ? s->getInt(name,ns) : pair<bool,int>(false,0);
1460 static int _rm_get_all_table_walk(void *v, const char *key, const char *value)
1462 reinterpret_cast<map<string,const char*>*>(v)->insert(pair<string,const char*>(key, value));
1466 void ApacheRequestMapper::getAll(map<string,const char*>& properties) const
1468 const ShibTargetApache* sta=reinterpret_cast<const ShibTargetApache*>(m_staKey->getData());
1469 const PropertySet* s=reinterpret_cast<const PropertySet*>(m_propsKey->getData());
1472 s->getAll(properties);
1476 const char* auth_type=ap_auth_type(sta->m_req);
1478 // Check for Basic Hijack
1479 if (!strcasecmp(auth_type, "basic") && sta->m_dc->bBasicHijack == 1)
1480 auth_type = "shibboleth";
1481 properties["authType"] = auth_type;
1484 if (sta->m_dc->szApplicationId)
1485 properties["applicationId"] = sta->m_dc->szApplicationId;
1486 if (sta->m_dc->szRequireWith)
1487 properties["requireSessionWith"] = sta->m_dc->szRequireWith;
1488 if (sta->m_dc->szRedirectToSSL)
1489 properties["redirectToSSL"] = sta->m_dc->szRedirectToSSL;
1490 if (sta->m_dc->bRequireSession != 0)
1491 properties["requireSession"] = (sta->m_dc->bRequireSession==1) ? "true" : "false";
1492 if (sta->m_dc->bExportAssertion != 0)
1493 properties["exportAssertion"] = (sta->m_dc->bExportAssertion==1) ? "true" : "false";
1495 if (sta->m_dc->tSettings)
1496 ap_table_do(_rm_get_all_table_walk, &properties, sta->m_dc->tSettings, NULL);
1499 const PropertySet* ApacheRequestMapper::getPropertySet(const char* name, const char* ns) const
1501 const PropertySet* s=reinterpret_cast<const PropertySet*>(m_propsKey->getData());
1502 return s ? s->getPropertySet(name,ns) : nullptr;
1505 const xercesc::DOMElement* ApacheRequestMapper::getElement() const
1507 const PropertySet* s=reinterpret_cast<const PropertySet*>(m_propsKey->getData());
1508 return s ? s->getElement() : nullptr;
1511 // Authz callbacks for Apache 2.4
1512 #ifdef SHIB_APACHE_24
1513 pair<ShibTargetApache*,authz_status> shib_base_check_authz(request_rec* r)
1515 shib_request_config* rc = (shib_request_config*)ap_get_module_config(r->request_config, &mod_shib);
1516 if (!rc || !rc->sta) {
1517 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "shib_base_check_authz found no per-request structure");
1518 return make_pair((ShibTargetApache*)nullptr, AUTHZ_GENERAL_ERROR);
1520 else if (!rc->sta->isInitialized()) {
1521 return make_pair((ShibTargetApache*)nullptr, AUTHZ_DENIED_NO_USER);
1523 return make_pair(rc->sta, AUTHZ_GRANTED);
1526 extern "C" authz_status shib_shibboleth_check_authz(request_rec* r, const char* require_line, const void*)
1528 pair<ShibTargetApache*,authz_status> sta = shib_base_check_authz(r);
1531 return AUTHZ_GRANTED;
1534 extern "C" authz_status shib_validuser_check_authz(request_rec* r, const char* require_line, const void*)
1536 pair<ShibTargetApache*,authz_status> sta = shib_base_check_authz(r);
1541 const Session* session = sta.first->getSession(false);
1543 sta.first->log(SPRequest::SPDebug, "htaccess: accepting valid-user based on active session");
1544 return AUTHZ_GRANTED;
1547 catch (std::exception& e) {
1548 sta.first->log(SPRequest::SPWarn, string("htaccess: unable to obtain session for access control check: ") + e.what());
1551 return AUTHZ_DENIED_NO_USER;
1554 extern "C" authz_status shib_user_check_authz(request_rec* r, const char* require_line, const void*)
1556 if (!r->user || !*(r->user))
1557 return AUTHZ_DENIED_NO_USER;
1558 pair<ShibTargetApache*,authz_status> sta = shib_base_check_authz(r);
1562 const htAccessControl& hta = dynamic_cast<const ApacheRequestMapper*>(sta.first->getRequestSettings().first)->getHTAccessControl();
1563 if (hta.doUser(*sta.first, require_line) == AccessControl::shib_acl_true)
1564 return AUTHZ_GRANTED;
1565 return AUTHZ_DENIED;
1568 extern "C" authz_status shib_acclass_check_authz(request_rec* r, const char* require_line, const void*)
1570 pair<ShibTargetApache*,authz_status> sta = shib_base_check_authz(r);
1574 const htAccessControl& hta = dynamic_cast<const ApacheRequestMapper*>(sta.first->getRequestSettings().first)->getHTAccessControl();
1577 const Session* session = sta.first->getSession(false);
1578 if (session && hta.doAuthnContext(*sta.first, session->getAuthnContextClassRef(), require_line) == AccessControl::shib_acl_true)
1579 return AUTHZ_GRANTED;
1580 return session ? AUTHZ_DENIED : AUTHZ_DENIED_NO_USER;
1582 catch (std::exception& e) {
1583 sta.first->log(SPRequest::SPWarn, string("htaccess: unable to obtain session for access control check: ") + e.what());
1586 return AUTHZ_GENERAL_ERROR;
1589 extern "C" authz_status shib_acdecl_check_authz(request_rec* r, const char* require_line, const void*)
1591 pair<ShibTargetApache*,authz_status> sta = shib_base_check_authz(r);
1595 const htAccessControl& hta = dynamic_cast<const ApacheRequestMapper*>(sta.first->getRequestSettings().first)->getHTAccessControl();
1598 const Session* session = sta.first->getSession(false);
1599 if (session && hta.doAuthnContext(*sta.first, session->getAuthnContextDeclRef(), require_line) == AccessControl::shib_acl_true)
1600 return AUTHZ_GRANTED;
1601 return session ? AUTHZ_DENIED : AUTHZ_DENIED_NO_USER;
1603 catch (std::exception& e) {
1604 sta.first->log(SPRequest::SPWarn, string("htaccess: unable to obtain session for access control check: ") + e.what());
1607 return AUTHZ_GENERAL_ERROR;
1610 extern "C" authz_status shib_attr_check_authz(request_rec* r, const char* require_line, const void*)
1612 pair<ShibTargetApache*,authz_status> sta = shib_base_check_authz(r);
1616 const htAccessControl& hta = dynamic_cast<const ApacheRequestMapper*>(sta.first->getRequestSettings().first)->getHTAccessControl();
1619 const Session* session = sta.first->getSession(false);
1621 const char* rule = ap_getword_conf(r->pool, &require_line);
1622 if (rule && hta.doShibAttr(*sta.first, session, rule, require_line) == AccessControl::shib_acl_true)
1623 return AUTHZ_GRANTED;
1625 return session ? AUTHZ_DENIED : AUTHZ_DENIED_NO_USER;
1627 catch (std::exception& e) {
1628 sta.first->log(SPRequest::SPWarn, string("htaccess: unable to obtain session for access control check: ") + e.what());
1631 return AUTHZ_GENERAL_ERROR;
1634 extern "C" authz_status shib_plugin_check_authz(request_rec* r, const char* require_line, const void*)
1636 pair<ShibTargetApache*,authz_status> sta = shib_base_check_authz(r);
1640 const htAccessControl& hta = dynamic_cast<const ApacheRequestMapper*>(sta.first->getRequestSettings().first)->getHTAccessControl();
1643 const Session* session = sta.first->getSession(false);
1645 const char* config = ap_getword_conf(r->pool, &require_line);
1646 if (config && hta.doAccessControl(*sta.first, session, config) == AccessControl::shib_acl_true)
1647 return AUTHZ_GRANTED;
1649 return session ? AUTHZ_DENIED : AUTHZ_DENIED_NO_USER;
1651 catch (std::exception& e) {
1652 sta.first->log(SPRequest::SPWarn, string("htaccess: unable to obtain session for access control check: ") + e.what());
1655 return AUTHZ_GENERAL_ERROR;
1659 // Command manipulation functions
1661 extern "C" const char* ap_set_global_string_slot(cmd_parms* parms, void*, const char* arg)
1663 *((char**)(parms->info))=ap_pstrdup(parms->pool,arg);
1667 extern "C" const char* shib_set_server_string_slot(cmd_parms* parms, void*, const char* arg)
1669 char* base=(char*)ap_get_module_config(parms->server->module_config,&mod_shib);
1670 size_t offset=(size_t)parms->info;
1671 *((char**)(base + offset))=ap_pstrdup(parms->pool,arg);
1675 extern "C" const char* shib_ap_set_file_slot(cmd_parms* parms,
1676 #ifdef SHIB_APACHE_13
1677 char* arg1, char* arg2
1679 void* arg1, const char* arg2
1683 ap_set_file_slot(parms, arg1, arg2);
1687 extern "C" const char* shib_table_set(cmd_parms* parms, shib_dir_config* dc, const char* arg1, const char* arg2)
1690 dc->tSettings = ap_make_table(parms->pool, 4);
1691 ap_table_set(dc->tSettings, arg1, arg2);
1695 #ifndef SHIB_APACHE_24
1696 extern "C" const char* shib_set_acl_slot(cmd_parms* params, shib_dir_config* dc, char* arg)
1708 absolute = (*(arg+1) == '.' || *(arg+1) == '/' || *(arg+1) == '\\');
1711 absolute = *(arg+1) == ':';
1714 if (absolute || !params->path)
1715 dc->szAccessControl = ap_pstrdup(params->pool, arg);
1717 dc->szAccessControl = ap_pstrcat(params->pool, params->path, arg);
1723 #ifdef SHIB_APACHE_13
1726 * Cleanup the (per-process) pool info.
1728 extern "C" void shib_child_exit(server_rec* s, SH_AP_POOL* p)
1731 ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_child_exit(%d) dealing with g_Config..", (int)getpid());
1734 ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_child_exit() done");
1740 * Apache 2.x doesn't allow for per-child cleanup, causes CGI forks to hang.
1742 extern "C" apr_status_t shib_exit(void* data)
1748 ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,0,nullptr,"shib_exit() done");
1754 * shire_child_init()
1755 * Things to do when the child process is initialized.
1756 * (or after the configs are read in apache-2)
1758 #ifdef SHIB_APACHE_13
1759 extern "C" void shib_child_init(server_rec* s, SH_AP_POOL* p)
1761 extern "C" void shib_child_init(apr_pool_t* p, server_rec* s)
1764 // Initialize runtime components.
1766 ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init(%d) starting", (int)getpid());
1769 ap_log_error(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() already initialized!");
1773 g_Config=&SPConfig::getConfig();
1774 g_Config->setFeatures(
1775 SPConfig::Listener |
1777 SPConfig::RequestMapping |
1778 SPConfig::InProcess |
1782 if (!g_Config->init(g_szSchemaDir, g_szPrefix)) {
1783 ap_log_error(APLOG_MARK,APLOG_CRIT|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() failed to initialize libraries");
1786 #ifndef SHIB_APACHE_24
1787 g_Config->AccessControlManager.registerFactory(HT_ACCESS_CONTROL, &htAccessFactory);
1789 g_Config->RequestMapperManager.registerFactory(NATIVE_REQUEST_MAPPER, &ApacheRequestMapFactory);
1792 if (!g_Config->instantiate(g_szSHIBConfig, true))
1793 throw runtime_error("unknown error");
1795 catch (std::exception& ex) {
1796 ap_log_error(APLOG_MARK,APLOG_CRIT|APLOG_NOERRNO,SH_AP_R(s),"%s",ex.what());
1797 ap_log_error(APLOG_MARK,APLOG_CRIT|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() failed to load configuration");
1801 ServiceProvider* sp = g_Config->getServiceProvider();
1802 xmltooling::Locker locker(sp);
1803 const PropertySet* props = sp->getPropertySet("InProcess");
1805 pair<bool,const char*> unsetValue = props->getString("unsetHeaderValue");
1806 if (unsetValue.first)
1807 g_unsetHeaderValue = unsetValue.second;
1808 pair<bool,bool> flag=props->getBool("checkSpoofing");
1809 g_checkSpoofing = !flag.first || flag.second;
1810 if (g_checkSpoofing) {
1811 unsetValue=props->getString("spoofKey");
1812 if (unsetValue.first)
1813 g_spoofKey = unsetValue.second;
1815 flag=props->getBool("catchAll");
1816 g_catchAll = flag.first && flag.second;
1819 // Set the cleanup handler
1820 apr_pool_cleanup_register(p, nullptr, &shib_exit, apr_pool_cleanup_null);
1822 ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, SH_AP_R(s), "shib_child_init() done");
1826 #ifdef SHIB_DEFERRED_HEADERS
1827 static void set_output_filter(request_rec *r)
1829 ap_add_output_filter("SHIB_HEADERS_OUT", nullptr, r, r->connection);
1832 static void set_error_filter(request_rec *r)
1834 ap_add_output_filter("SHIB_HEADERS_ERR", nullptr, r, r->connection);
1837 static int _table_add(void *v, const char *key, const char *value)
1839 apr_table_addn((apr_table_t*)v, key, value);
1843 static apr_status_t do_output_filter(ap_filter_t *f, apr_bucket_brigade *in)
1845 request_rec *r = f->r;
1846 shib_request_config *rc = (shib_request_config*) ap_get_module_config(r->request_config, &mod_shib);
1848 if (rc && rc->hdr_out) {
1849 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);
1850 // can't use overlap call because it will collapse Set-Cookie headers
1851 //apr_table_overlap(r->headers_out, rc->hdr_out, APR_OVERLAP_TABLES_MERGE);
1852 apr_table_do(_table_add,r->headers_out, rc->hdr_out,NULL);
1855 /* remove ourselves from the filter chain */
1856 ap_remove_output_filter(f);
1858 /* send the data up the stack */
1859 return ap_pass_brigade(f->next,in);
1862 static apr_status_t do_error_filter(ap_filter_t *f, apr_bucket_brigade *in)
1864 request_rec *r = f->r;
1865 shib_request_config *rc = (shib_request_config*) ap_get_module_config(r->request_config, &mod_shib);
1867 if (rc && rc->hdr_out) {
1868 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);
1869 // can't use overlap call because it will collapse Set-Cookie headers
1870 //apr_table_overlap(r->err_headers_out, rc->hdr_out, APR_OVERLAP_TABLES_MERGE);
1871 apr_table_do(_table_add,r->err_headers_out, rc->hdr_out,NULL);
1874 /* remove ourselves from the filter chain */
1875 ap_remove_output_filter(f);
1877 /* send the data up the stack */
1878 return ap_pass_brigade(f->next,in);
1880 #endif // SHIB_DEFERRED_HEADERS
1882 typedef const char* (*config_fn_t)(void);
1884 #ifdef SHIB_APACHE_13
1886 // SHIB Module commands
1888 static command_rec shire_cmds[] = {
1889 {"ShibPrefix", (config_fn_t)ap_set_global_string_slot, &g_szPrefix,
1890 RSRC_CONF, TAKE1, "Shibboleth installation directory"},
1891 {"ShibConfig", (config_fn_t)ap_set_global_string_slot, &g_szSHIBConfig,
1892 RSRC_CONF, TAKE1, "Path to shibboleth2.xml config file"},
1893 {"ShibCatalogs", (config_fn_t)ap_set_global_string_slot, &g_szSchemaDir,
1894 RSRC_CONF, TAKE1, "Paths of XML schema catalogs"},
1896 {"ShibURLScheme", (config_fn_t)shib_set_server_string_slot,
1897 (void *) XtOffsetOf (shib_server_config, szScheme),
1898 RSRC_CONF, TAKE1, "URL scheme to force into generated URLs for a vhost"},
1900 {"ShibRequestSetting", (config_fn_t)shib_table_set, nullptr,
1901 OR_AUTHCFG, TAKE2, "Set arbitrary Shibboleth request property for content"},
1903 {"ShibAccessControl", (config_fn_t)shib_set_acl_slot, nullptr,
1904 OR_AUTHCFG, TAKE1, "Set arbitrary Shibboleth access control plugin for content"},
1906 {"ShibDisable", (config_fn_t)ap_set_flag_slot,
1907 (void *) XtOffsetOf (shib_dir_config, bOff),
1908 OR_AUTHCFG, FLAG, "Disable all Shib module activity here to save processing effort"},
1909 {"ShibApplicationId", (config_fn_t)ap_set_string_slot,
1910 (void *) XtOffsetOf (shib_dir_config, szApplicationId),
1911 OR_AUTHCFG, TAKE1, "Set Shibboleth applicationId property for content"},
1912 {"ShibBasicHijack", (config_fn_t)ap_set_flag_slot,
1913 (void *) XtOffsetOf (shib_dir_config, bBasicHijack),
1914 OR_AUTHCFG, FLAG, "(DEPRECATED) Respond to AuthType Basic and convert to shibboleth"},
1915 {"ShibRequireSession", (config_fn_t)ap_set_flag_slot,
1916 (void *) XtOffsetOf (shib_dir_config, bRequireSession),
1917 OR_AUTHCFG, FLAG, "Initiates a new session if one does not exist"},
1918 {"ShibRequireSessionWith", (config_fn_t)ap_set_string_slot,
1919 (void *) XtOffsetOf (shib_dir_config, szRequireWith),
1920 OR_AUTHCFG, TAKE1, "Initiates a new session if one does not exist using a specific SessionInitiator"},
1921 {"ShibExportAssertion", (config_fn_t)ap_set_flag_slot,
1922 (void *) XtOffsetOf (shib_dir_config, bExportAssertion),
1923 OR_AUTHCFG, FLAG, "Export SAML attribute assertion(s) to Shib-Attributes header"},
1924 {"ShibRedirectToSSL", (config_fn_t)ap_set_string_slot,
1925 (void *) XtOffsetOf (shib_dir_config, szRedirectToSSL),
1926 OR_AUTHCFG, TAKE1, "Redirect non-SSL requests to designated port" },
1927 {"AuthGroupFile", (config_fn_t)shib_ap_set_file_slot,
1928 (void *) XtOffsetOf (shib_dir_config, szAuthGrpFile),
1929 OR_AUTHCFG, TAKE1, "text file containing group names and member user IDs"},
1930 {"ShibRequireAll", (config_fn_t)ap_set_flag_slot,
1931 (void *) XtOffsetOf (shib_dir_config, bRequireAll),
1932 OR_AUTHCFG, FLAG, "All require directives must match"},
1933 {"AuthzShibAuthoritative", (config_fn_t)ap_set_flag_slot,
1934 (void *) XtOffsetOf (shib_dir_config, bAuthoritative),
1935 OR_AUTHCFG, FLAG, "Allow failed mod_shib htaccess authorization to fall through to other modules"},
1936 {"ShibCompatWith24", (config_fn_t)ap_set_flag_slot,
1937 (void *) XtOffsetOf (shib_dir_config, bCompatWith24),
1938 OR_AUTHCFG, FLAG, "Support Apache 2.4-style require rules"},
1939 {"ShibUseEnvironment", (config_fn_t)ap_set_flag_slot,
1940 (void *) XtOffsetOf (shib_dir_config, bUseEnvVars),
1941 OR_AUTHCFG, FLAG, "Export attributes using environment variables (default)"},
1942 {"ShibUseHeaders", (config_fn_t)ap_set_flag_slot,
1943 (void *) XtOffsetOf (shib_dir_config, bUseHeaders),
1944 OR_AUTHCFG, FLAG, "Export attributes using custom HTTP headers"},
1945 {"ShibExpireRedirects", (config_fn_t)ap_set_flag_slot,
1946 (void *) XtOffsetOf (shib_dir_config, bExpireRedirects),
1947 OR_AUTHCFG, FLAG, "Expire SP-generated redirects"},
1953 handler_rec shib_handlers[] = {
1954 { "shib-handler", shib_handler },
1958 module MODULE_VAR_EXPORT mod_shib = {
1959 STANDARD_MODULE_STUFF,
1960 nullptr, /* initializer */
1961 create_shib_dir_config, /* dir config creater */
1962 merge_shib_dir_config, /* dir merger --- default is to override */
1963 create_shib_server_config, /* server config */
1964 merge_shib_server_config, /* merge server config */
1965 shire_cmds, /* command table */
1966 shib_handlers, /* handlers */
1967 nullptr, /* filename translation */
1968 shib_check_user, /* check_user_id */
1969 shib_auth_checker, /* check auth */
1970 nullptr, /* check access */
1971 nullptr, /* type_checker */
1972 shib_fixups, /* fixups */
1973 nullptr, /* logger */
1974 nullptr, /* header parser */
1975 shib_child_init, /* child_init */
1976 shib_child_exit, /* child_exit */
1977 shib_post_read /* post read-request */
1982 #ifdef SHIB_APACHE_24
1983 extern "C" const authz_provider shib_authz_shibboleth_provider = { &shib_shibboleth_check_authz, nullptr };
1984 extern "C" const authz_provider shib_authz_validuser_provider = { &shib_validuser_check_authz, nullptr };
1985 extern "C" const authz_provider shib_authz_user_provider = { &shib_user_check_authz, nullptr };
1986 extern "C" const authz_provider shib_authz_acclass_provider = { &shib_acclass_check_authz, nullptr };
1987 extern "C" const authz_provider shib_authz_acdecl_provider = { &shib_acdecl_check_authz, nullptr };
1988 extern "C" const authz_provider shib_authz_attr_provider = { &shib_attr_check_authz, nullptr };
1989 extern "C" const authz_provider shib_authz_plugin_provider = { &shib_plugin_check_authz, nullptr };
1992 extern "C" void shib_register_hooks (apr_pool_t *p)
1994 #ifdef SHIB_DEFERRED_HEADERS
1995 ap_register_output_filter("SHIB_HEADERS_OUT", do_output_filter, nullptr, AP_FTYPE_CONTENT_SET);
1996 ap_hook_insert_filter(set_output_filter, nullptr, nullptr, APR_HOOK_LAST);
1997 ap_register_output_filter("SHIB_HEADERS_ERR", do_error_filter, nullptr, AP_FTYPE_CONTENT_SET);
1998 ap_hook_insert_error_filter(set_error_filter, nullptr, nullptr, APR_HOOK_LAST);
1999 ap_hook_post_read_request(shib_post_read, nullptr, nullptr, APR_HOOK_MIDDLE);
2001 ap_hook_child_init(shib_child_init, nullptr, nullptr, APR_HOOK_MIDDLE);
2002 const char* prereq = getenv("SHIBSP_APACHE_PREREQ");
2003 #ifdef SHIB_APACHE_24
2004 if (prereq && *prereq) {
2005 const char* const authnPre[] = { prereq, nullptr };
2006 ap_hook_check_authn(shib_check_user, authnPre, nullptr, APR_HOOK_MIDDLE, AP_AUTH_INTERNAL_PER_URI);
2009 ap_hook_check_authn(shib_check_user, nullptr, nullptr, APR_HOOK_MIDDLE, AP_AUTH_INTERNAL_PER_URI);
2011 ap_hook_check_authz(shib_auth_checker, nullptr, nullptr, APR_HOOK_FIRST, AP_AUTH_INTERNAL_PER_URI);
2013 if (prereq && *prereq) {
2014 const char* const authnPre[] = { prereq, nullptr };
2015 ap_hook_check_user_id(shib_check_user, authnPre, nullptr, APR_HOOK_MIDDLE);
2018 ap_hook_check_user_id(shib_check_user, nullptr, nullptr, APR_HOOK_MIDDLE);
2020 ap_hook_auth_checker(shib_auth_checker, nullptr, nullptr, APR_HOOK_FIRST);
2022 ap_hook_handler(shib_handler, nullptr, nullptr, APR_HOOK_LAST);
2023 ap_hook_fixups(shib_fixups, nullptr, nullptr, APR_HOOK_MIDDLE);
2025 #ifdef SHIB_APACHE_24
2026 ap_register_auth_provider(p, AUTHZ_PROVIDER_GROUP, "shibboleth", AUTHZ_PROVIDER_VERSION, &shib_authz_shibboleth_provider, AP_AUTH_INTERNAL_PER_CONF);
2027 ap_register_auth_provider(p, AUTHZ_PROVIDER_GROUP, "valid-user", AUTHZ_PROVIDER_VERSION, &shib_authz_validuser_provider, AP_AUTH_INTERNAL_PER_CONF);
2028 ap_register_auth_provider(p, AUTHZ_PROVIDER_GROUP, "user", AUTHZ_PROVIDER_VERSION, &shib_authz_user_provider, AP_AUTH_INTERNAL_PER_CONF);
2029 ap_register_auth_provider(p, AUTHZ_PROVIDER_GROUP, "authnContextClassRef", AUTHZ_PROVIDER_VERSION, &shib_authz_acclass_provider, AP_AUTH_INTERNAL_PER_CONF);
2030 ap_register_auth_provider(p, AUTHZ_PROVIDER_GROUP, "authnContextDeclRef", AUTHZ_PROVIDER_VERSION, &shib_authz_acdecl_provider, AP_AUTH_INTERNAL_PER_CONF);
2031 ap_register_auth_provider(p, AUTHZ_PROVIDER_GROUP, "shib-attr", AUTHZ_PROVIDER_VERSION, &shib_authz_attr_provider, AP_AUTH_INTERNAL_PER_CONF);
2032 ap_register_auth_provider(p, AUTHZ_PROVIDER_GROUP, "shib-plugin", AUTHZ_PROVIDER_VERSION, &shib_authz_plugin_provider, AP_AUTH_INTERNAL_PER_CONF);
2036 // SHIB Module commands
2039 static command_rec shib_cmds[] = {
2040 AP_INIT_TAKE1("ShibPrefix", (config_fn_t)ap_set_global_string_slot, &g_szPrefix,
2041 RSRC_CONF, "Shibboleth installation directory"),
2042 AP_INIT_TAKE1("ShibConfig", (config_fn_t)ap_set_global_string_slot, &g_szSHIBConfig,
2043 RSRC_CONF, "Path to shibboleth2.xml config file"),
2044 AP_INIT_TAKE1("ShibCatalogs", (config_fn_t)ap_set_global_string_slot, &g_szSchemaDir,
2045 RSRC_CONF, "Paths of XML schema catalogs"),
2046 AP_INIT_TAKE1("ShibGSSKey", (config_fn_t)ap_set_global_string_slot, &g_szGSSContextKey,
2047 RSRC_CONF, "Name of user data key containing GSS context established by GSS module"),
2049 AP_INIT_TAKE1("ShibURLScheme", (config_fn_t)shib_set_server_string_slot,
2050 (void *) offsetof (shib_server_config, szScheme),
2051 RSRC_CONF, "URL scheme to force into generated URLs for a vhost"),
2053 AP_INIT_TAKE2("ShibRequestSetting", (config_fn_t)shib_table_set, nullptr,
2054 OR_AUTHCFG, "Set arbitrary Shibboleth request property for content"),
2056 AP_INIT_FLAG("ShibDisable", (config_fn_t)ap_set_flag_slot,
2057 (void *) offsetof (shib_dir_config, bOff),
2058 OR_AUTHCFG, "Disable all Shib module activity here to save processing effort"),
2059 AP_INIT_TAKE1("ShibApplicationId", (config_fn_t)ap_set_string_slot,
2060 (void *) offsetof (shib_dir_config, szApplicationId),
2061 OR_AUTHCFG, "Set Shibboleth applicationId property for content"),
2062 AP_INIT_FLAG("ShibBasicHijack", (config_fn_t)ap_set_flag_slot,
2063 (void *) offsetof (shib_dir_config, bBasicHijack),
2064 OR_AUTHCFG, "(DEPRECATED) Respond to AuthType Basic and convert to shibboleth"),
2065 AP_INIT_FLAG("ShibRequireSession", (config_fn_t)ap_set_flag_slot,
2066 (void *) offsetof (shib_dir_config, bRequireSession),
2067 OR_AUTHCFG, "Initiates a new session if one does not exist"),
2068 AP_INIT_TAKE1("ShibRequireSessionWith", (config_fn_t)ap_set_string_slot,
2069 (void *) offsetof (shib_dir_config, szRequireWith),
2070 OR_AUTHCFG, "Initiates a new session if one does not exist using a specific SessionInitiator"),
2071 AP_INIT_FLAG("ShibExportAssertion", (config_fn_t)ap_set_flag_slot,
2072 (void *) offsetof (shib_dir_config, bExportAssertion),
2073 OR_AUTHCFG, "Export SAML attribute assertion(s) to Shib-Attributes header"),
2074 AP_INIT_TAKE1("ShibRedirectToSSL", (config_fn_t)ap_set_string_slot,
2075 (void *) offsetof (shib_dir_config, szRedirectToSSL),
2076 OR_AUTHCFG, "Redirect non-SSL requests to designated port"),
2077 #ifdef SHIB_APACHE_24
2078 AP_INIT_FLAG("ShibRequestMapperAuthz", (config_fn_t)ap_set_flag_slot,
2079 (void *) offsetof (shib_dir_config, bRequestMapperAuthz),
2080 OR_AUTHCFG, "Support access control via shibboleth2.xml / RequestMapper"),
2082 AP_INIT_TAKE1("AuthGroupFile", (config_fn_t)shib_ap_set_file_slot,
2083 (void *) offsetof (shib_dir_config, szAuthGrpFile),
2084 OR_AUTHCFG, "Text file containing group names and member user IDs"),
2085 AP_INIT_TAKE1("ShibAccessControl", (config_fn_t)shib_set_acl_slot, nullptr,
2086 OR_AUTHCFG, "Set arbitrary Shibboleth access control plugin for content"),
2087 AP_INIT_FLAG("ShibRequireAll", (config_fn_t)ap_set_flag_slot,
2088 (void *) offsetof (shib_dir_config, bRequireAll),
2089 OR_AUTHCFG, "All require directives must match"),
2090 AP_INIT_FLAG("AuthzShibAuthoritative", (config_fn_t)ap_set_flag_slot,
2091 (void *) offsetof (shib_dir_config, bAuthoritative),
2092 OR_AUTHCFG, "Allow failed mod_shib htaccess authorization to fall through to other modules"),
2093 AP_INIT_FLAG("ShibCompatWith24", (config_fn_t)ap_set_flag_slot,
2094 (void *) offsetof (shib_dir_config, bCompatWith24),
2095 OR_AUTHCFG, "Support Apache 2.4-style require rules"),
2097 AP_INIT_FLAG("ShibUseEnvironment", (config_fn_t)ap_set_flag_slot,
2098 (void *) offsetof (shib_dir_config, bUseEnvVars),
2099 OR_AUTHCFG, "Export attributes using environment variables (default)"),
2100 AP_INIT_FLAG("ShibUseHeaders", (config_fn_t)ap_set_flag_slot,
2101 (void *) offsetof (shib_dir_config, bUseHeaders),
2102 OR_AUTHCFG, "Export attributes using custom HTTP headers"),
2103 AP_INIT_FLAG("ShibExpireRedirects", (config_fn_t)ap_set_flag_slot,
2104 (void *) offsetof (shib_dir_config, bExpireRedirects),
2105 OR_AUTHCFG, "Expire SP-generated redirects"),
2110 module AP_MODULE_DECLARE_DATA mod_shib = {
2111 STANDARD20_MODULE_STUFF,
2112 create_shib_dir_config, /* create dir config */
2113 merge_shib_dir_config, /* merge dir config --- default is to override */
2114 create_shib_server_config, /* create server config */
2115 merge_shib_server_config, /* merge server config */
2116 shib_cmds, /* command table */
2117 shib_register_hooks /* register hooks */