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>
67 #include <boost/lexical_cast.hpp>
68 #include <boost/scoped_ptr.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>
88 #include <unistd.h> // for getpid()
91 using namespace shibsp;
92 using namespace xmltooling;
93 using namespace boost;
95 using xercesc::RegularExpression;
96 using xercesc::XMLException;
98 extern "C" module MODULE_VAR_EXPORT mod_shib;
101 char* g_szSHIBConfig = nullptr;
102 char* g_szSchemaDir = nullptr;
103 char* g_szPrefix = nullptr;
104 SPConfig* g_Config = nullptr;
105 string g_unsetHeaderValue,g_spoofKey;
106 bool g_checkSpoofing = true;
107 bool g_catchAll = false;
108 #ifndef SHIB_APACHE_13
109 char* g_szGSSContextKey = "mod_auth_gssapi:gss_ctx";
111 static const char* g_UserDataKey = "urn:mace:shibboleth:Apache:shib_check_user";
114 /* Apache 2.2.x headers must be accumulated and set in the output filter.
115 Apache 2.0.49+ supports the filter method.
116 Apache 1.3.x and lesser 2.0.x must write the headers directly. */
118 #if (defined(SHIB_APACHE_20) || defined(SHIB_APACHE_22)) && AP_MODULE_MAGIC_AT_LEAST(20020903,6)
119 #define SHIB_DEFERRED_HEADERS
122 /********************************************************************************/
123 // Basic Apache Configuration code.
126 // per-server module configuration structure
127 struct shib_server_config
132 // creates the per-server configuration
133 extern "C" void* create_shib_server_config(SH_AP_POOL* p, server_rec* s)
135 shib_server_config* sc=(shib_server_config*)ap_pcalloc(p,sizeof(shib_server_config));
136 sc->szScheme = nullptr;
140 // overrides server configuration in virtual servers
141 extern "C" void* merge_shib_server_config (SH_AP_POOL* p, void* base, void* sub)
143 shib_server_config* sc=(shib_server_config*)ap_pcalloc(p,sizeof(shib_server_config));
144 shib_server_config* parent=(shib_server_config*)base;
145 shib_server_config* child=(shib_server_config*)sub;
148 sc->szScheme=ap_pstrdup(p,child->szScheme);
149 else if (parent->szScheme)
150 sc->szScheme=ap_pstrdup(p,parent->szScheme);
152 sc->szScheme=nullptr;
157 // per-dir module configuration structure
158 struct shib_dir_config
160 SH_AP_TABLE* tSettings; // generic table of extensible settings
163 char* szAuthGrpFile; // Auth GroupFile name
164 int bRequireAll; // all "known" require directives must match, otherwise OR logic
165 int bAuthoritative; // allow htaccess plugin to DECLINE when authz fails
167 // Content Configuration
168 char* szApplicationId; // Shib applicationId value
169 char* szRequireWith; // require a session using a specific initiator?
170 char* szRedirectToSSL; // redirect non-SSL requests to SSL port
171 char* szAccessControl; // path to "external" AccessControl plugin file
172 int bOff; // flat-out disable all Shib processing
173 int bBasicHijack; // activate for AuthType Basic?
174 int bRequireSession; // require a session?
175 int bExportAssertion; // export SAML assertion to the environment?
176 int bUseEnvVars; // use environment?
177 int bUseHeaders; // use headers?
178 int bExpireRedirects; // expire redirects?
181 // creates per-directory config structure
182 extern "C" void* create_shib_dir_config (SH_AP_POOL* p, char* d)
184 shib_dir_config* dc=(shib_dir_config*)ap_pcalloc(p,sizeof(shib_dir_config));
185 dc->tSettings = nullptr;
186 dc->szAuthGrpFile = nullptr;
187 dc->bRequireAll = -1;
188 dc->bAuthoritative = -1;
189 dc->szApplicationId = nullptr;
190 dc->szRequireWith = nullptr;
191 dc->szRedirectToSSL = nullptr;
192 dc->szAccessControl = nullptr;
194 dc->bBasicHijack = -1;
195 dc->bRequireSession = -1;
196 dc->bExportAssertion = -1;
197 dc->bUseEnvVars = -1;
198 dc->bUseHeaders = -1;
199 dc->bExpireRedirects = -1;
203 // overrides server configuration in directories
204 extern "C" void* merge_shib_dir_config (SH_AP_POOL* p, void* base, void* sub)
206 shib_dir_config* dc=(shib_dir_config*)ap_pcalloc(p,sizeof(shib_dir_config));
207 shib_dir_config* parent=(shib_dir_config*)base;
208 shib_dir_config* child=(shib_dir_config*)sub;
210 // The child supersedes any matching table settings in the parent.
211 dc->tSettings = nullptr;
212 if (parent->tSettings)
213 dc->tSettings = ap_copy_table(p, parent->tSettings);
214 if (child->tSettings) {
216 ap_overlap_tables(dc->tSettings, child->tSettings, AP_OVERLAP_TABLES_SET);
218 dc->tSettings = ap_copy_table(p, child->tSettings);
221 if (child->szAuthGrpFile)
222 dc->szAuthGrpFile=ap_pstrdup(p,child->szAuthGrpFile);
223 else if (parent->szAuthGrpFile)
224 dc->szAuthGrpFile=ap_pstrdup(p,parent->szAuthGrpFile);
226 dc->szAuthGrpFile=nullptr;
228 if (child->szApplicationId)
229 dc->szApplicationId=ap_pstrdup(p,child->szApplicationId);
230 else if (parent->szApplicationId)
231 dc->szApplicationId=ap_pstrdup(p,parent->szApplicationId);
233 dc->szApplicationId=nullptr;
235 if (child->szRequireWith)
236 dc->szRequireWith=ap_pstrdup(p,child->szRequireWith);
237 else if (parent->szRequireWith)
238 dc->szRequireWith=ap_pstrdup(p,parent->szRequireWith);
240 dc->szRequireWith=nullptr;
242 if (child->szRedirectToSSL)
243 dc->szRedirectToSSL=ap_pstrdup(p,child->szRedirectToSSL);
244 else if (parent->szRedirectToSSL)
245 dc->szRedirectToSSL=ap_pstrdup(p,parent->szRedirectToSSL);
247 dc->szRedirectToSSL=nullptr;
249 if (child->szAccessControl)
250 dc->szAccessControl=ap_pstrdup(p,child->szAccessControl);
251 else if (parent->szAccessControl)
252 dc->szAccessControl=ap_pstrdup(p,parent->szAccessControl);
254 dc->szAccessControl=nullptr;
256 dc->bOff=((child->bOff==-1) ? parent->bOff : child->bOff);
257 dc->bBasicHijack=((child->bBasicHijack==-1) ? parent->bBasicHijack : child->bBasicHijack);
258 dc->bRequireSession=((child->bRequireSession==-1) ? parent->bRequireSession : child->bRequireSession);
259 dc->bExportAssertion=((child->bExportAssertion==-1) ? parent->bExportAssertion : child->bExportAssertion);
260 dc->bRequireAll=((child->bRequireAll==-1) ? parent->bRequireAll : child->bRequireAll);
261 dc->bAuthoritative=((child->bAuthoritative==-1) ? parent->bAuthoritative : child->bAuthoritative);
262 dc->bUseEnvVars=((child->bUseEnvVars==-1) ? parent->bUseEnvVars : child->bUseEnvVars);
263 dc->bUseHeaders=((child->bUseHeaders==-1) ? parent->bUseHeaders : child->bUseHeaders);
264 dc->bExpireRedirects=((child->bExpireRedirects==-1) ? parent->bExpireRedirects : child->bExpireRedirects);
268 // per-request module structure
269 struct shib_request_config
271 SH_AP_TABLE *env; // environment vars
272 #ifdef SHIB_DEFERRED_HEADERS
273 SH_AP_TABLE *hdr_out; // headers to browser
277 // create a request record
278 static shib_request_config *init_request_config(request_rec *r)
280 shib_request_config* rc=(shib_request_config*)ap_pcalloc(r->pool,sizeof(shib_request_config));
281 ap_set_module_config (r->request_config, &mod_shib, rc);
282 memset(rc, 0, sizeof(shib_request_config));
283 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_init_rc");
287 // generic global slot handlers
288 extern "C" const char* ap_set_global_string_slot(cmd_parms* parms, void*, const char* arg)
290 *((char**)(parms->info))=ap_pstrdup(parms->pool,arg);
294 extern "C" const char* shib_set_server_string_slot(cmd_parms* parms, void*, const char* arg)
296 char* base=(char*)ap_get_module_config(parms->server->module_config,&mod_shib);
297 size_t offset=(size_t)parms->info;
298 *((char**)(base + offset))=ap_pstrdup(parms->pool,arg);
302 extern "C" const char* shib_ap_set_file_slot(cmd_parms* parms,
303 #ifdef SHIB_APACHE_13
304 char* arg1, char* arg2
306 void* arg1, const char* arg2
310 ap_set_file_slot(parms, arg1, arg2);
314 extern "C" const char* shib_table_set(cmd_parms* parms, shib_dir_config* dc, const char* arg1, const char* arg2)
317 dc->tSettings = ap_make_table(parms->pool, 4);
318 ap_table_set(dc->tSettings, arg1, arg2);
323 class ShibTargetApache : public AbstractSPRequest
324 #if defined(SHIBSP_HAVE_GSSAPI) && !defined(SHIB_APACHE_13)
329 mutable string m_body;
330 mutable bool m_gotBody,m_firsttime;
331 mutable vector<string> m_certs;
332 set<string> m_allhttp;
336 shib_dir_config* m_dc;
337 shib_server_config* m_sc;
338 shib_request_config* m_rc;
340 ShibTargetApache(request_rec* req, bool handler, bool shib_check_user)
341 : AbstractSPRequest(SHIBSP_LOGCAT".Apache"), m_handler(handler), m_gotBody(false),m_firsttime(true) {
342 m_sc = (shib_server_config*)ap_get_module_config(req->server->module_config, &mod_shib);
343 m_dc = (shib_dir_config*)ap_get_module_config(req->per_dir_config, &mod_shib);
344 m_rc = (shib_request_config*)ap_get_module_config(req->request_config, &mod_shib);
347 setRequestURI(m_req->unparsed_uri);
349 if (shib_check_user && m_dc->bUseHeaders == 1) {
350 // Try and see if this request was already processed, to skip spoof checking.
351 if (!ap_is_initial_req(m_req)) {
354 else if (!g_spoofKey.empty()) {
355 const char* hdr = ap_table_get(m_req->headers_in, "Shib-Spoof-Check");
356 if (hdr && g_spoofKey == hdr)
361 log(SPDebug, "shib_check_user running more than once");
364 virtual ~ShibTargetApache() {}
366 const char* getScheme() const {
367 return m_sc->szScheme ? m_sc->szScheme : ap_http_method(m_req);
369 bool isSecure() const {
370 return HTTPRequest::isSecure();
372 const char* getHostname() const {
373 return ap_get_server_name(m_req);
375 int getPort() const {
376 return ap_get_server_port(m_req);
378 const char* getMethod() const {
379 return m_req->method;
381 string getContentType() const {
382 const char* type = ap_table_get(m_req->headers_in, "Content-Type");
383 return type ? type : "";
385 long getContentLength() const {
386 return m_gotBody ? m_body.length() : m_req->remaining;
388 string getRemoteAddr() const {
389 string ret = AbstractSPRequest::getRemoteAddr();
390 return ret.empty() ? m_req->connection->remote_ip : ret;
392 void log(SPLogLevel level, const string& msg) const {
393 AbstractSPRequest::log(level,msg);
396 (level == SPDebug ? APLOG_DEBUG :
397 (level == SPInfo ? APLOG_INFO :
398 (level == SPWarn ? APLOG_WARNING :
399 (level == SPError ? APLOG_ERR : APLOG_CRIT))))|APLOG_NOERRNO,
405 const char* getQueryString() const { return m_req->args; }
406 const char* getRequestBody() const {
407 if (m_gotBody || m_req->method_number==M_GET)
408 return m_body.c_str();
409 #ifdef SHIB_APACHE_13
410 // Read the posted data
411 if (ap_setup_client_block(m_req, REQUEST_CHUNKED_DECHUNK) != OK) {
413 log(SPError, "Apache function (setup_client_block) failed while reading request body.");
414 return m_body.c_str();
416 if (!ap_should_client_block(m_req)) {
418 log(SPError, "Apache function (should_client_block) failed while reading request body.");
419 return m_body.c_str();
421 if (m_req->remaining > 1024*1024)
422 throw opensaml::SecurityPolicyException("Blocked request body larger than 1M size limit.");
425 char buff[HUGE_STRING_LEN];
426 ap_hard_timeout("[mod_shib] getRequestBody", m_req);
427 while ((len=ap_get_client_block(m_req, buff, sizeof(buff))) > 0) {
428 ap_reset_timeout(m_req);
429 m_body.append(buff, len);
431 ap_kill_timeout(m_req);
436 apr_bucket_brigade* bb = apr_brigade_create(m_req->pool, m_req->connection->bucket_alloc);
439 apr_status_t rv = ap_get_brigade(m_req->input_filters, bb, AP_MODE_READBYTES, APR_BLOCK_READ, HUGE_STRING_LEN);
440 if (rv != APR_SUCCESS) {
441 log(SPError, "Apache function (ap_get_brigade) failed while reading request body.");
445 for (bucket = APR_BRIGADE_FIRST(bb); bucket != APR_BRIGADE_SENTINEL(bb); bucket = APR_BUCKET_NEXT(bucket)) {
446 if (APR_BUCKET_IS_EOS(bucket)) {
451 /* We can't do much with this. */
452 if (APR_BUCKET_IS_FLUSH(bucket))
456 apr_bucket_read(bucket, &data, &len, APR_BLOCK_READ);
458 m_body.append(data, len);
460 apr_brigade_cleanup(bb);
462 apr_brigade_destroy(bb);
465 return m_body.c_str();
467 const char* getParameter(const char* name) const {
468 return AbstractSPRequest::getParameter(name);
470 vector<const char*>::size_type getParameters(const char* name, vector<const char*>& values) const {
471 return AbstractSPRequest::getParameters(name, values);
473 void clearHeader(const char* rawname, const char* cginame) {
474 if (m_dc->bUseHeaders == 1) {
475 // ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(m_req), "shib_clear_header: hdr\n");
476 if (g_checkSpoofing && m_firsttime) {
477 if (m_allhttp.empty()) {
478 // First time, so populate set with "CGI" versions of client-supplied headers.
479 #ifdef SHIB_APACHE_13
480 array_header *hdrs_arr = ap_table_elts(m_req->headers_in);
481 table_entry *hdrs = (table_entry *) hdrs_arr->elts;
483 const apr_array_header_t *hdrs_arr = apr_table_elts(m_req->headers_in);
484 const apr_table_entry_t *hdrs = (const apr_table_entry_t *) hdrs_arr->elts;
486 for (int i = 0; i < hdrs_arr->nelts; ++i) {
489 string cgiversion("HTTP_");
490 const char* pch = hdrs[i].key;
492 cgiversion += (isalnum(*pch) ? toupper(*pch) : '_');
495 m_allhttp.insert(cgiversion);
499 if (m_allhttp.count(cginame) > 0)
500 throw opensaml::SecurityPolicyException("Attempt to spoof header ($1) was detected.", params(1, rawname));
502 ap_table_unset(m_req->headers_in, rawname);
503 ap_table_set(m_req->headers_in, rawname, g_unsetHeaderValue.c_str());
506 void setHeader(const char* name, const char* value) {
507 if (m_dc->bUseEnvVars != 0) {
509 // this happens on subrequests
510 // ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(m_req), "shib_setheader: no_m_rc\n");
511 m_rc = init_request_config(m_req);
514 m_rc->env = ap_make_table(m_req->pool, 10);
515 // ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(m_req), "shib_set_env: %s=%s\n", name, value?value:"Null");
516 ap_table_set(m_rc->env, name, value ? value : "");
518 if (m_dc->bUseHeaders == 1)
519 ap_table_set(m_req->headers_in, name, value);
521 string getHeader(const char* name) const {
522 const char* hdr = ap_table_get(m_req->headers_in, name);
523 return string(hdr ? hdr : "");
525 string getSecureHeader(const char* name) const {
526 if (m_dc->bUseEnvVars != 0) {
528 if (m_rc && m_rc->env)
529 hdr = ap_table_get(m_rc->env, name);
532 return string(hdr ? hdr : "");
534 return getHeader(name);
536 void setRemoteUser(const char* user) {
537 SH_AP_USER(m_req) = user ? ap_pstrdup(m_req->pool, user) : nullptr;
538 if (m_dc->bUseHeaders == 1) {
540 ap_table_set(m_req->headers_in, "REMOTE_USER", user);
543 ap_table_unset(m_req->headers_in, "REMOTE_USER");
544 ap_table_set(m_req->headers_in, "REMOTE_USER", g_unsetHeaderValue.c_str());
548 string getRemoteUser() const {
549 return string(SH_AP_USER(m_req) ? SH_AP_USER(m_req) : "");
551 void setAuthType(const char* authtype) {
552 if (authtype && m_dc->bBasicHijack == 1)
554 SH_AP_AUTH_TYPE(m_req) = authtype ? ap_pstrdup(m_req->pool, authtype) : nullptr;
556 string getAuthType() const {
557 return string(SH_AP_AUTH_TYPE(m_req) ? SH_AP_AUTH_TYPE(m_req) : "");
559 void setContentType(const char* type) {
560 m_req->content_type = ap_psprintf(m_req->pool, "%s", type);
562 void setResponseHeader(const char* name, const char* value) {
563 HTTPResponse::setResponseHeader(name, value);
564 #ifdef SHIB_DEFERRED_HEADERS
566 // this happens on subrequests
567 m_rc = init_request_config(m_req);
570 m_rc->hdr_out = ap_make_table(m_req->pool, 5);
571 ap_table_add(m_rc->hdr_out, name, value);
575 ap_table_add(m_req->err_headers_out, name, value);
577 long sendResponse(istream& in, long status) {
578 if (status != XMLTOOLING_HTTP_STATUS_OK)
579 m_req->status = status;
580 ap_send_http_header(m_req);
584 ap_rwrite(buf,in.gcount(),m_req);
586 #if (defined(SHIB_APACHE_20) || defined(SHIB_APACHE_22))
587 if (status != XMLTOOLING_HTTP_STATUS_OK && status != XMLTOOLING_HTTP_STATUS_ERROR)
592 long sendRedirect(const char* url) {
593 HTTPResponse::sendRedirect(url);
594 ap_table_set(m_req->headers_out, "Location", url);
595 if (m_dc->bExpireRedirects != 0) {
596 ap_table_set(m_req->err_headers_out, "Expires", "Wed, 01 Jan 1997 12:00:00 GMT");
597 ap_table_set(m_req->err_headers_out, "Cache-Control", "private,no-store,no-cache,max-age=0");
601 const vector<string>& getClientCertificates() const {
602 if (m_certs.empty()) {
603 const char* cert = ap_table_get(m_req->subprocess_env, "SSL_CLIENT_CERT");
605 m_certs.push_back(cert);
608 cert = ap_table_get(m_req->subprocess_env, ap_psprintf(m_req->pool, "SSL_CLIENT_CERT_CHAIN_%d", i++));
610 m_certs.push_back(cert);
615 long returnDecline(void) { return DECLINED; }
616 long returnOK(void) { return OK; }
617 #if defined(SHIBSP_HAVE_GSSAPI) && !defined(SHIB_APACHE_13)
618 gss_ctx_id_t getGSSContext() const {
619 gss_ctx_id_t ctx = GSS_C_NO_CONTEXT;
620 apr_pool_userdata_get((void**)&ctx, g_szGSSContextKey, m_req->pool);
626 /********************************************************************************/
629 extern "C" int shib_check_user(request_rec* r)
631 // Short-circuit entirely?
632 if (((shib_dir_config*)ap_get_module_config(r->per_dir_config, &mod_shib))->bOff==1)
635 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_check_user(%d): ENTER", (int)getpid());
637 string threadid("[");
638 threadid += lexical_cast<string>(getpid()) + "] shib_check_user";
639 xmltooling::NDC ndc(threadid.c_str());
642 ShibTargetApache sta(r,false,true);
644 // Check user authentication and export information, then set the handler bypass
645 pair<bool,long> res = sta.getServiceProvider().doAuthentication(sta,true);
646 apr_pool_userdata_setn((const void*)42,g_UserDataKey,nullptr,r->pool);
647 // If directed, install a spoof key to recognize when we've already cleared headers.
648 if (!g_spoofKey.empty() && (((shib_dir_config*)ap_get_module_config(r->per_dir_config, &mod_shib))->bUseHeaders==1))
649 ap_table_set(r->headers_in, "Shib-Spoof-Check", g_spoofKey.c_str());
650 if (res.first) return res.second;
652 // user auth was okay -- export the assertions now
653 res = sta.getServiceProvider().doExport(sta);
654 if (res.first) return res.second;
656 // export happened successfully.. this user is ok.
659 catch (std::exception& e) {
660 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "shib_check_user threw an exception: %s", e.what());
664 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "shib_check_user threw an unknown exception!");
671 extern "C" int shib_handler(request_rec* r)
673 // Short-circuit entirely?
674 if (((shib_dir_config*)ap_get_module_config(r->per_dir_config, &mod_shib))->bOff==1)
677 string threadid("[");
678 threadid += lexical_cast<string>(getpid()) + "] shib_handler";
679 xmltooling::NDC ndc(threadid.c_str());
681 #ifndef SHIB_APACHE_13
682 // With 2.x, this handler always runs, though last.
683 // We check if shib_check_user ran, because it will detect a handler request
684 // and dispatch it directly.
686 apr_pool_userdata_get(&data,g_UserDataKey,r->pool);
687 if (data==(const void*)42) {
688 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_handler skipped since check_user ran");
693 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_handler(%d): ENTER: %s", (int)getpid(), r->handler);
696 ShibTargetApache sta(r,true,false);
698 pair<bool,long> res = sta.getServiceProvider().doHandler(sta);
699 if (res.first) return res.second;
701 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "doHandler() did not do anything.");
704 catch (std::exception& e) {
705 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "shib_handler threw an exception: %s", e.what());
709 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "shib_handler threw an unknown exception!");
717 * shib_auth_checker() -- a simple resource manager to
718 * process the .htaccess settings
720 extern "C" int shib_auth_checker(request_rec* r)
722 // Short-circuit entirely?
723 if (((shib_dir_config*)ap_get_module_config(r->per_dir_config, &mod_shib))->bOff==1)
726 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_auth_checker(%d): ENTER", (int)getpid());
728 string threadid("[");
729 threadid += lexical_cast<string>(getpid()) + "] shib_auth_checker";
730 xmltooling::NDC ndc(threadid.c_str());
733 ShibTargetApache sta(r,false,false);
735 pair<bool,long> res = sta.getServiceProvider().doAuthorization(sta);
736 if (res.first) return res.second;
738 // The SP method should always return true, so if we get this far, something unusual happened.
739 // Just let Apache (or some other module) decide what to do.
742 catch (std::exception& e) {
743 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "shib_auth_checker threw an exception: %s", e.what());
747 ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "shib_auth_checker threw an unknown exception!");
754 // Access control plugin that enforces htaccess rules
755 class htAccessControl : virtual public AccessControl
759 ~htAccessControl() {}
760 Lockable* lock() {return this;}
762 aclresult_t authorized(const SPRequest& request, const Session* session) const;
764 bool checkAttribute(const SPRequest& request, const Attribute* attr, const char* toMatch, RegularExpression* re) const;
767 AccessControl* htAccessFactory(const xercesc::DOMElement* const & e)
769 return new htAccessControl();
772 class ApacheRequestMapper : public virtual RequestMapper, public virtual PropertySet
775 ApacheRequestMapper(const xercesc::DOMElement* e);
776 ~ApacheRequestMapper() {}
777 Lockable* lock() { return m_mapper->lock(); }
778 void unlock() { m_staKey->setData(nullptr); m_propsKey->setData(nullptr); m_mapper->unlock(); }
779 Settings getSettings(const HTTPRequest& request) const;
781 const PropertySet* getParent() const { return nullptr; }
782 void setParent(const PropertySet*) {}
783 pair<bool,bool> getBool(const char* name, const char* ns=nullptr) const;
784 pair<bool,const char*> getString(const char* name, const char* ns=nullptr) const;
785 pair<bool,const XMLCh*> getXMLString(const char* name, const char* ns=nullptr) const;
786 pair<bool,unsigned int> getUnsignedInt(const char* name, const char* ns=nullptr) const;
787 pair<bool,int> getInt(const char* name, const char* ns=nullptr) const;
788 void getAll(map<string,const char*>& properties) const;
789 const PropertySet* getPropertySet(const char* name, const char* ns=shibspconstants::ASCII_SHIB2SPCONFIG_NS) const;
790 const xercesc::DOMElement* getElement() const;
793 scoped_ptr<RequestMapper> m_mapper;
794 scoped_ptr<ThreadKey> m_staKey,m_propsKey;
795 mutable htAccessControl m_htaccess;
798 RequestMapper* ApacheRequestMapFactory(const xercesc::DOMElement* const & e)
800 return new ApacheRequestMapper(e);
803 ApacheRequestMapper::ApacheRequestMapper(const xercesc::DOMElement* e)
804 : m_mapper(SPConfig::getConfig().RequestMapperManager.newPlugin(XML_REQUEST_MAPPER,e)),
805 m_staKey(ThreadKey::create(nullptr)), m_propsKey(ThreadKey::create(nullptr))
809 RequestMapper::Settings ApacheRequestMapper::getSettings(const HTTPRequest& request) const
811 Settings s = m_mapper->getSettings(request);
812 m_staKey->setData((void*)dynamic_cast<const ShibTargetApache*>(&request));
813 m_propsKey->setData((void*)s.first);
814 return pair<const PropertySet*,AccessControl*>(this, s.second ? s.second : &m_htaccess);
817 pair<bool,bool> ApacheRequestMapper::getBool(const char* name, const char* ns) const
819 const ShibTargetApache* sta=reinterpret_cast<const ShibTargetApache*>(m_staKey->getData());
820 const PropertySet* s=reinterpret_cast<const PropertySet*>(m_propsKey->getData());
822 // Override Apache-settable boolean properties.
823 if (name && !strcmp(name,"requireSession") && sta->m_dc->bRequireSession != -1)
824 return make_pair(true, sta->m_dc->bRequireSession==1);
825 else if (name && !strcmp(name,"exportAssertion") && sta->m_dc->bExportAssertion != -1)
826 return make_pair(true, sta->m_dc->bExportAssertion==1);
827 else if (sta->m_dc->tSettings) {
828 const char* prop = ap_table_get(sta->m_dc->tSettings, name);
830 return make_pair(true, !strcmp(prop, "true") || !strcmp(prop, "1") || !strcmp(prop, "On"));
833 return s ? s->getBool(name,ns) : make_pair(false,false);
836 pair<bool,const char*> ApacheRequestMapper::getString(const char* name, const char* ns) const
838 const ShibTargetApache* sta=reinterpret_cast<const ShibTargetApache*>(m_staKey->getData());
839 const PropertySet* s=reinterpret_cast<const PropertySet*>(m_propsKey->getData());
841 // Override Apache-settable string properties.
842 if (name && !strcmp(name,"authType")) {
843 const char *auth_type=ap_auth_type(sta->m_req);
845 // Check for Basic Hijack
846 if (!strcasecmp(auth_type, "basic") && sta->m_dc->bBasicHijack == 1)
847 auth_type = "shibboleth";
848 return make_pair(true,auth_type);
851 else if (name && !strcmp(name,"applicationId") && sta->m_dc->szApplicationId)
852 return pair<bool,const char*>(true,sta->m_dc->szApplicationId);
853 else if (name && !strcmp(name,"requireSessionWith") && sta->m_dc->szRequireWith)
854 return pair<bool,const char*>(true,sta->m_dc->szRequireWith);
855 else if (name && !strcmp(name,"redirectToSSL") && sta->m_dc->szRedirectToSSL)
856 return pair<bool,const char*>(true,sta->m_dc->szRedirectToSSL);
857 else if (sta->m_dc->tSettings) {
858 const char* prop = ap_table_get(sta->m_dc->tSettings, name);
860 return make_pair(true, prop);
863 return s ? s->getString(name,ns) : pair<bool,const char*>(false,nullptr);
866 pair<bool,const XMLCh*> ApacheRequestMapper::getXMLString(const char* name, const char* ns) const
868 const PropertySet* s=reinterpret_cast<const PropertySet*>(m_propsKey->getData());
869 return s ? s->getXMLString(name,ns) : pair<bool,const XMLCh*>(false,nullptr);
872 pair<bool,unsigned int> ApacheRequestMapper::getUnsignedInt(const char* name, const char* ns) const
874 const ShibTargetApache* sta=reinterpret_cast<const ShibTargetApache*>(m_staKey->getData());
875 const PropertySet* s=reinterpret_cast<const PropertySet*>(m_propsKey->getData());
877 // Override Apache-settable int properties.
878 if (name && !strcmp(name,"redirectToSSL") && sta->m_dc->szRedirectToSSL)
879 return pair<bool,unsigned int>(true, strtol(sta->m_dc->szRedirectToSSL, nullptr, 10));
880 else if (sta->m_dc->tSettings) {
881 const char* prop = ap_table_get(sta->m_dc->tSettings, name);
883 return pair<bool,unsigned int>(true, atoi(prop));
886 return s ? s->getUnsignedInt(name,ns) : pair<bool,unsigned int>(false,0);
889 pair<bool,int> ApacheRequestMapper::getInt(const char* name, const char* ns) const
891 const ShibTargetApache* sta=reinterpret_cast<const ShibTargetApache*>(m_staKey->getData());
892 const PropertySet* s=reinterpret_cast<const PropertySet*>(m_propsKey->getData());
894 // Override Apache-settable int properties.
895 if (name && !strcmp(name,"redirectToSSL") && sta->m_dc->szRedirectToSSL)
896 return pair<bool,int>(true,atoi(sta->m_dc->szRedirectToSSL));
897 else if (sta->m_dc->tSettings) {
898 const char* prop = ap_table_get(sta->m_dc->tSettings, name);
900 return make_pair(true, atoi(prop));
903 return s ? s->getInt(name,ns) : pair<bool,int>(false,0);
906 static int _rm_get_all_table_walk(void *v, const char *key, const char *value)
908 reinterpret_cast<map<string,const char*>*>(v)->insert(pair<string,const char*>(key, value));
912 void ApacheRequestMapper::getAll(map<string,const char*>& properties) const
914 const ShibTargetApache* sta=reinterpret_cast<const ShibTargetApache*>(m_staKey->getData());
915 const PropertySet* s=reinterpret_cast<const PropertySet*>(m_propsKey->getData());
918 s->getAll(properties);
922 const char* auth_type=ap_auth_type(sta->m_req);
924 // Check for Basic Hijack
925 if (!strcasecmp(auth_type, "basic") && sta->m_dc->bBasicHijack == 1)
926 auth_type = "shibboleth";
927 properties["authType"] = auth_type;
930 if (sta->m_dc->szApplicationId)
931 properties["applicationId"] = sta->m_dc->szApplicationId;
932 if (sta->m_dc->szRequireWith)
933 properties["requireSessionWith"] = sta->m_dc->szRequireWith;
934 if (sta->m_dc->szRedirectToSSL)
935 properties["redirectToSSL"] = sta->m_dc->szRedirectToSSL;
936 if (sta->m_dc->bRequireSession != 0)
937 properties["requireSession"] = (sta->m_dc->bRequireSession==1) ? "true" : "false";
938 if (sta->m_dc->bExportAssertion != 0)
939 properties["exportAssertion"] = (sta->m_dc->bExportAssertion==1) ? "true" : "false";
941 if (sta->m_dc->tSettings)
942 ap_table_do(_rm_get_all_table_walk, &properties, sta->m_dc->tSettings, NULL);
945 const PropertySet* ApacheRequestMapper::getPropertySet(const char* name, const char* ns) const
947 const PropertySet* s=reinterpret_cast<const PropertySet*>(m_propsKey->getData());
948 return s ? s->getPropertySet(name,ns) : nullptr;
951 const xercesc::DOMElement* ApacheRequestMapper::getElement() const
953 const PropertySet* s=reinterpret_cast<const PropertySet*>(m_propsKey->getData());
954 return s ? s->getElement() : nullptr;
957 static SH_AP_TABLE* groups_for_user(request_rec* r, const char* user, char* grpfile)
960 SH_AP_TABLE* grps=ap_make_table(r->pool,15);
961 char l[MAX_STRING_LEN];
962 const char *group_name, *ll, *w;
964 #ifdef SHIB_APACHE_13
965 if (!(f=ap_pcfg_openfile(r->pool,grpfile))) {
967 if (ap_pcfg_openfile(&f,r->pool,grpfile) != APR_SUCCESS) {
969 ap_log_rerror(APLOG_MARK,APLOG_DEBUG,SH_AP_R(r),"groups_for_user() could not open group file: %s\n",grpfile);
974 #ifdef SHIB_APACHE_13
975 sp=ap_make_sub_pool(r->pool);
977 if (apr_pool_create(&sp,r->pool) != APR_SUCCESS) {
978 ap_log_rerror(APLOG_MARK,APLOG_ERR,0,r,
979 "groups_for_user() could not create a subpool");
984 while (!(ap_cfg_getline(l,MAX_STRING_LEN,f))) {
985 if ((*l=='#') || (!*l))
990 group_name=ap_getword(sp,&ll,':');
993 w=ap_getword_conf(sp,&ll);
994 if (!strcmp(w,user)) {
995 ap_table_setn(grps,ap_pstrdup(r->pool,group_name),"in");
1000 ap_cfg_closefile(f);
1001 ap_destroy_pool(sp);
1005 bool htAccessControl::checkAttribute(const SPRequest& request, const Attribute* attr, const char* toMatch, RegularExpression* re) const
1007 bool caseSensitive = attr->isCaseSensitive();
1008 const vector<string>& vals = attr->getSerializedValues();
1009 for (vector<string>::const_iterator v = vals.begin(); v != vals.end(); ++v) {
1011 auto_arrayptr<XMLCh> trans(fromUTF8(v->c_str()));
1012 if (re->matches(trans.get())) {
1013 if (request.isPriorityEnabled(SPRequest::SPDebug))
1014 request.log(SPRequest::SPDebug, string("htaccess: expecting regexp ") + toMatch + ", got " + *v + ": acccepted");
1018 else if ((caseSensitive && *v == toMatch) || (!caseSensitive && !strcasecmp(v->c_str(), toMatch))) {
1019 if (request.isPriorityEnabled(SPRequest::SPDebug))
1020 request.log(SPRequest::SPDebug, string("htaccess: expecting ") + toMatch + ", got " + *v + ": accepted");
1023 else if (request.isPriorityEnabled(SPRequest::SPDebug)) {
1024 request.log(SPRequest::SPDebug, string("htaccess: expecting ") + toMatch + ", got " + *v + ": rejected");
1030 AccessControl::aclresult_t htAccessControl::authorized(const SPRequest& request, const Session* session) const
1032 // Make sure the object is our type.
1033 const ShibTargetApache* sta=dynamic_cast<const ShibTargetApache*>(&request);
1035 throw ConfigurationException("Request wrapper object was not of correct type.");
1037 int m=sta->m_req->method_number;
1038 bool method_restricted=false;
1041 const array_header* reqs_arr=ap_requires(sta->m_req);
1043 return shib_acl_indeterminate; // should never happen
1045 // Check for an "embedded" AccessControl plugin.
1046 if (sta->m_dc->szAccessControl) {
1047 aclresult_t result = shib_acl_false;
1049 ifstream aclfile(sta->m_dc->szAccessControl);
1050 xercesc::DOMDocument* acldoc = XMLToolingConfig::getConfig().getParser().parse(aclfile);
1051 XercesJanitor<xercesc::DOMDocument> docjanitor(acldoc);
1052 static XMLCh _type[] = UNICODE_LITERAL_4(t,y,p,e);
1053 string t(XMLHelper::getAttrString(acldoc ? acldoc->getDocumentElement() : nullptr, nullptr, _type));
1055 throw ConfigurationException("Missing type attribute in AccessControl plugin configuration.");
1056 scoped_ptr<AccessControl> aclplugin(SPConfig::getConfig().AccessControlManager.newPlugin(t.c_str(), acldoc->getDocumentElement()));
1057 Locker acllock(aclplugin.get());
1058 result = aclplugin->authorized(request, session);
1060 catch (std::exception& ex) {
1061 request.log(SPRequest::SPError, ex.what());
1064 if (result == shib_acl_true && sta->m_dc->bRequireAll != 1) {
1065 // If we're not insisting that all rules be met, then we're done.
1066 request.log(SPRequest::SPDebug, "htaccess: embedded AccessControl plugin was successful, granting access");
1067 return shib_acl_true;
1069 else if (result != shib_acl_true && sta->m_dc->bRequireAll == 1) {
1070 // If we're insisting that all rules be met, which is not something Apache really handles well,
1071 // then we either return false or indeterminate based on the authoritative option, which defaults on.
1072 if (sta->m_dc->bAuthoritative != 0) {
1073 request.log(SPRequest::SPDebug, "htaccess: embedded AccessControl plugin was unsuccessful, denying access");
1074 return shib_acl_false;
1077 request.log(SPRequest::SPDebug, "htaccess: embedded AccessControl plugin was unsuccessful but not authoritative, leaving it up to Apache");
1078 return shib_acl_indeterminate;
1083 require_line* reqs=(require_line*)reqs_arr->elts;
1085 for (int x=0; x<reqs_arr->nelts; x++) {
1086 // This rule should be completely ignored, the method doesn't fit.
1087 // The rule just doesn't exist for our purposes.
1088 if (!(reqs[x].method_mask & (1 << m)))
1091 method_restricted=true; // this lets us know at the end that at least one rule was potentially enforcable.
1093 // Tracks status of this rule's evaluation.
1094 bool status = false;
1096 string remote_user = request.getRemoteUser();
1098 t = reqs[x].requirement;
1099 w = ap_getword_white(sta->m_req->pool, &t);
1101 if (!strcasecmp(w,"shibboleth")) {
1102 // This is a dummy rule needed because Apache conflates authn and authz.
1103 // Without some require rule, AuthType is ignored and no check_user hooks run.
1105 // We evaluate to false if ShibAccessControl is used and ShibRequireAll is off.
1106 // This allows actual rules to dictate the result, since ShibAccessControl returned
1107 // non-true, and if nothing else is used, access will be denied.
1108 if (!sta->m_dc->szAccessControl || sta->m_dc->bRequireAll == 1) {
1109 // We evaluate to true, because ShibRequireAll is enabled (so a true is just a no-op)
1110 // or because there was no other AccessControl rule in place, so this may be the only
1115 else if (!strcmp(w,"valid-user") && session) {
1116 request.log(SPRequest::SPDebug, "htaccess: accepting valid-user based on active session");
1119 else if (!strcmp(w,"user") && !remote_user.empty()) {
1120 bool regexp = false;
1122 w = ap_getword_conf(sta->m_req->pool,&t);
1127 else if (*w == '!') {
1128 // A negated rule presumes success unless a match is found.
1135 // Figure out if there's a match.
1139 // To do regex matching, we have to convert from UTF-8.
1140 auto_arrayptr<XMLCh> trans(fromUTF8(w));
1141 RegularExpression re(trans.get());
1142 auto_arrayptr<XMLCh> trans2(fromUTF8(remote_user.c_str()));
1143 match = re.matches(trans2.get());
1145 catch (XMLException& ex) {
1146 auto_ptr_char tmp(ex.getMessage());
1147 request.log(SPRequest::SPError,
1148 string("htaccess plugin caught exception while parsing regular expression (") + w + "): " + tmp.get());
1151 else if (remote_user == w) {
1156 // If we matched, then we're done with this rule either way and we flip status to reflect the outcome.
1158 if (request.isPriorityEnabled(SPRequest::SPDebug))
1159 request.log(SPRequest::SPDebug,
1160 string("htaccess: require user ") + (!status ? "rejecting (" : "accepting (") + remote_user + ")");
1165 else if (!strcmp(w,"group") && !remote_user.empty()) {
1166 SH_AP_TABLE* grpstatus = nullptr;
1167 if (sta->m_dc->szAuthGrpFile) {
1168 if (request.isPriorityEnabled(SPRequest::SPDebug))
1169 request.log(SPRequest::SPDebug,string("htaccess plugin using groups file: ") + sta->m_dc->szAuthGrpFile);
1170 grpstatus = groups_for_user(sta->m_req,remote_user.c_str(),sta->m_dc->szAuthGrpFile);
1174 w = ap_getword_conf(sta->m_req->pool,&t);
1176 // A negated rule presumes success unless a match is found.
1181 if (grpstatus && ap_table_get(grpstatus,w)) {
1182 // If we matched, then we're done with this rule either way and we flip status to reflect the outcome.
1184 request.log(SPRequest::SPDebug, string("htaccess: require group ") + (!status ? "rejecting (" : "accepting (") + w + ")");
1189 else if (!strcmp(w,"authnContextClassRef") || !strcmp(w,"authnContextDeclRef")) {
1190 const char* ref = !strcmp(w,"authnContextClassRef") ? session->getAuthnContextClassRef() : session->getAuthnContextDeclRef();
1192 bool regexp = false;
1194 w = ap_getword_conf(sta->m_req->pool,&t);
1199 else if (*w == '!') {
1200 // A negated rule presumes success unless a match is found.
1207 // Figure out if there's a match.
1211 // To do regex matching, we have to convert from UTF-8.
1212 RegularExpression re(w);
1213 match = re.matches(ref);
1215 catch (XMLException& ex) {
1216 auto_ptr_char tmp(ex.getMessage());
1217 request.log(SPRequest::SPError,
1218 string("htaccess plugin caught exception while parsing regular expression (") + w + "): " + tmp.get());
1221 else if (!strcmp(w,ref)) {
1226 // If we matched, then we're done with this rule either way and we flip status to reflect the outcome.
1228 if (request.isPriorityEnabled(SPRequest::SPDebug))
1229 request.log(SPRequest::SPDebug,
1230 string("htaccess: require authnContext ") + (!status ? "rejecting (" : "accepting (") + ref + ")");
1235 else if (request.isPriorityEnabled(SPRequest::SPDebug)) {
1236 request.log(SPRequest::SPDebug, "htaccess: require authnContext rejecting session with no context associated");
1239 else if (!session) {
1240 request.log(SPRequest::SPError, string("htaccess: require ") + w + " not given a valid session, are you using lazy sessions?");
1243 // Find the attribute(s) matching the require rule.
1244 pair<multimap<string,const Attribute*>::const_iterator,multimap<string,const Attribute*>::const_iterator> attrs =
1245 session->getIndexedAttributes().equal_range(w);
1248 while (!status && attrs.first!=attrs.second && *t) {
1249 w=ap_getword_conf(sta->m_req->pool,&t);
1256 scoped_ptr<RegularExpression> re;
1258 auto_arrayptr<XMLCh> trans(fromUTF8(w));
1259 re.reset(new xercesc::RegularExpression(trans.get()));
1262 pair<multimap<string,const Attribute*>::const_iterator,multimap<string,const Attribute*>::const_iterator> attrs2(attrs);
1263 for (; !status && attrs2.first!=attrs2.second; ++attrs2.first) {
1264 if (checkAttribute(request, attrs2.first->second, w, regexp ? re.get() : nullptr)) {
1269 catch (XMLException& ex) {
1270 auto_ptr_char tmp(ex.getMessage());
1271 request.log(SPRequest::SPError,
1272 string("htaccess plugin caught exception while parsing regular expression (") + w + "): " + tmp.get()
1278 // If status is false, we found a rule we couldn't satisfy.
1279 // Could be an unknown rule to us, or it just didn't match.
1281 if (status && sta->m_dc->bRequireAll != 1) {
1282 // If we're not insisting that all rules be met, then we're done.
1283 request.log(SPRequest::SPDebug, "htaccess: a rule was successful, granting access");
1284 return shib_acl_true;
1286 else if (!status && sta->m_dc->bRequireAll == 1) {
1287 // If we're insisting that all rules be met, which is not something Apache really handles well,
1288 // then we either return false or indeterminate based on the authoritative option, which defaults on.
1289 if (sta->m_dc->bAuthoritative != 0) {
1290 request.log(SPRequest::SPDebug, "htaccess: a rule was unsuccessful, denying access");
1291 return shib_acl_false;
1294 request.log(SPRequest::SPDebug, "htaccess: a rule was unsuccessful but not authoritative, leaving it up to Apache");
1295 return shib_acl_indeterminate;
1298 // Otherwise, we keep going. If we're requring all, then we have to check every rule.
1299 // If not we just didn't find a successful rule yet, so we keep going anyway.
1302 // If we get here, we either "failed" or we're in require all mode (but not both).
1303 // If no rules possibly apply or we insisted that all rules check out, then we're good.
1304 if (!method_restricted) {
1305 request.log(SPRequest::SPDebug, "htaccess: no rules applied to this request method, granting access");
1306 return shib_acl_true;
1308 else if (sta->m_dc->bRequireAll == 1) {
1309 request.log(SPRequest::SPDebug, "htaccess: all rules successful, granting access");
1310 return shib_acl_true;
1312 else if (sta->m_dc->bAuthoritative != 0) {
1313 request.log(SPRequest::SPDebug, "htaccess: no rules were successful, denying access");
1314 return shib_acl_false;
1317 request.log(SPRequest::SPDebug, "htaccess: no rules were successful but not authoritative, leaving it up to Apache");
1318 return shib_acl_indeterminate;
1322 // Initial look at a request - create the per-request structure
1323 static int shib_post_read(request_rec *r)
1325 init_request_config(r);
1326 //ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_post_read");
1330 // fixups: set environment vars
1332 extern "C" int shib_fixups(request_rec* r)
1334 shib_request_config *rc = (shib_request_config*)ap_get_module_config(r->request_config, &mod_shib);
1335 shib_dir_config *dc = (shib_dir_config*)ap_get_module_config(r->per_dir_config, &mod_shib);
1336 if (dc->bOff==1 || dc->bUseEnvVars==0)
1339 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_fixup(%d): ENTER", (int)getpid());
1341 if (rc==nullptr || rc->env==nullptr || ap_is_empty_table(rc->env))
1344 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_fixup adding %d vars", ap_table_elts(rc->env)->nelts);
1345 r->subprocess_env = ap_overlay_tables(r->pool, r->subprocess_env, rc->env);
1350 #ifdef SHIB_APACHE_13
1353 * Cleanup the (per-process) pool info.
1355 extern "C" void shib_child_exit(server_rec* s, SH_AP_POOL* p)
1358 ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_child_exit(%d) dealing with g_Config..", (int)getpid());
1361 ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_child_exit() done");
1367 * Apache 2.x doesn't allow for per-child cleanup, causes CGI forks to hang.
1369 extern "C" apr_status_t shib_exit(void* data)
1375 ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,0,nullptr,"shib_exit() done");
1381 * shire_child_init()
1382 * Things to do when the child process is initialized.
1383 * (or after the configs are read in apache-2)
1385 #ifdef SHIB_APACHE_13
1386 extern "C" void shib_child_init(server_rec* s, SH_AP_POOL* p)
1388 extern "C" void shib_child_init(apr_pool_t* p, server_rec* s)
1391 // Initialize runtime components.
1393 ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init(%d) starting", (int)getpid());
1396 ap_log_error(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() already initialized!");
1400 g_Config=&SPConfig::getConfig();
1401 g_Config->setFeatures(
1402 SPConfig::Listener |
1404 SPConfig::RequestMapping |
1405 SPConfig::InProcess |
1409 if (!g_Config->init(g_szSchemaDir, g_szPrefix)) {
1410 ap_log_error(APLOG_MARK,APLOG_CRIT|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() failed to initialize libraries");
1413 g_Config->AccessControlManager.registerFactory(HT_ACCESS_CONTROL,&htAccessFactory);
1414 g_Config->RequestMapperManager.registerFactory(NATIVE_REQUEST_MAPPER,&ApacheRequestMapFactory);
1417 if (!g_Config->instantiate(g_szSHIBConfig, true))
1418 throw runtime_error("unknown error");
1420 catch (std::exception& ex) {
1421 ap_log_error(APLOG_MARK,APLOG_CRIT|APLOG_NOERRNO,SH_AP_R(s),"%s",ex.what());
1422 ap_log_error(APLOG_MARK,APLOG_CRIT|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() failed to load configuration");
1426 ServiceProvider* sp=g_Config->getServiceProvider();
1427 xmltooling::Locker locker(sp);
1428 const PropertySet* props=sp->getPropertySet("InProcess");
1430 pair<bool,const char*> unsetValue=props->getString("unsetHeaderValue");
1431 if (unsetValue.first)
1432 g_unsetHeaderValue = unsetValue.second;
1433 pair<bool,bool> flag=props->getBool("checkSpoofing");
1434 g_checkSpoofing = !flag.first || flag.second;
1435 if (g_checkSpoofing) {
1436 unsetValue=props->getString("spoofKey");
1437 if (unsetValue.first)
1438 g_spoofKey = unsetValue.second;
1440 flag=props->getBool("catchAll");
1441 g_catchAll = flag.first && flag.second;
1444 // Set the cleanup handler
1445 apr_pool_cleanup_register(p, nullptr, &shib_exit, apr_pool_cleanup_null);
1447 ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() done");
1451 #ifdef SHIB_DEFERRED_HEADERS
1452 static void set_output_filter(request_rec *r)
1454 ap_add_output_filter("SHIB_HEADERS_OUT", nullptr, r, r->connection);
1457 static void set_error_filter(request_rec *r)
1459 ap_add_output_filter("SHIB_HEADERS_ERR", nullptr, r, r->connection);
1462 static int _table_add(void *v, const char *key, const char *value)
1464 apr_table_addn((apr_table_t*)v, key, value);
1468 static apr_status_t do_output_filter(ap_filter_t *f, apr_bucket_brigade *in)
1470 request_rec *r = f->r;
1471 shib_request_config *rc = (shib_request_config*) ap_get_module_config(r->request_config, &mod_shib);
1473 if (rc && rc->hdr_out) {
1474 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);
1475 // can't use overlap call because it will collapse Set-Cookie headers
1476 //apr_table_overlap(r->headers_out, rc->hdr_out, APR_OVERLAP_TABLES_MERGE);
1477 apr_table_do(_table_add,r->headers_out, rc->hdr_out,NULL);
1480 /* remove ourselves from the filter chain */
1481 ap_remove_output_filter(f);
1483 /* send the data up the stack */
1484 return ap_pass_brigade(f->next,in);
1487 static apr_status_t do_error_filter(ap_filter_t *f, apr_bucket_brigade *in)
1489 request_rec *r = f->r;
1490 shib_request_config *rc = (shib_request_config*) ap_get_module_config(r->request_config, &mod_shib);
1492 if (rc && rc->hdr_out) {
1493 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);
1494 // can't use overlap call because it will collapse Set-Cookie headers
1495 //apr_table_overlap(r->err_headers_out, rc->hdr_out, APR_OVERLAP_TABLES_MERGE);
1496 apr_table_do(_table_add,r->err_headers_out, rc->hdr_out,NULL);
1499 /* remove ourselves from the filter chain */
1500 ap_remove_output_filter(f);
1502 /* send the data up the stack */
1503 return ap_pass_brigade(f->next,in);
1505 #endif // SHIB_DEFERRED_HEADERS
1507 typedef const char* (*config_fn_t)(void);
1509 #ifdef SHIB_APACHE_13
1511 // SHIB Module commands
1513 static command_rec shire_cmds[] = {
1514 {"ShibPrefix", (config_fn_t)ap_set_global_string_slot, &g_szPrefix,
1515 RSRC_CONF, TAKE1, "Shibboleth installation directory"},
1516 {"ShibConfig", (config_fn_t)ap_set_global_string_slot, &g_szSHIBConfig,
1517 RSRC_CONF, TAKE1, "Path to shibboleth2.xml config file"},
1518 {"ShibCatalogs", (config_fn_t)ap_set_global_string_slot, &g_szSchemaDir,
1519 RSRC_CONF, TAKE1, "Paths of XML schema catalogs"},
1521 {"ShibURLScheme", (config_fn_t)shib_set_server_string_slot,
1522 (void *) XtOffsetOf (shib_server_config, szScheme),
1523 RSRC_CONF, TAKE1, "URL scheme to force into generated URLs for a vhost"},
1525 {"ShibRequestSetting", (config_fn_t)shib_table_set, nullptr,
1526 OR_AUTHCFG, TAKE2, "Set arbitrary Shibboleth request property for content"},
1528 {"ShibAccessControl", (config_fn_t)ap_set_string_slot,
1529 (void *) XtOffsetOf (shib_dir_config, szAccessControl),
1530 OR_AUTHCFG, TAKE1, "Set arbitrary Shibboleth access control plugin for content"},
1532 {"ShibDisable", (config_fn_t)ap_set_flag_slot,
1533 (void *) XtOffsetOf (shib_dir_config, bOff),
1534 OR_AUTHCFG, FLAG, "Disable all Shib module activity here to save processing effort"},
1535 {"ShibApplicationId", (config_fn_t)ap_set_string_slot,
1536 (void *) XtOffsetOf (shib_dir_config, szApplicationId),
1537 OR_AUTHCFG, TAKE1, "Set Shibboleth applicationId property for content"},
1538 {"ShibBasicHijack", (config_fn_t)ap_set_flag_slot,
1539 (void *) XtOffsetOf (shib_dir_config, bBasicHijack),
1540 OR_AUTHCFG, FLAG, "(DEPRECATED) Respond to AuthType Basic and convert to shibboleth"},
1541 {"ShibRequireSession", (config_fn_t)ap_set_flag_slot,
1542 (void *) XtOffsetOf (shib_dir_config, bRequireSession),
1543 OR_AUTHCFG, FLAG, "Initiates a new session if one does not exist"},
1544 {"ShibRequireSessionWith", (config_fn_t)ap_set_string_slot,
1545 (void *) XtOffsetOf (shib_dir_config, szRequireWith),
1546 OR_AUTHCFG, TAKE1, "Initiates a new session if one does not exist using a specific SessionInitiator"},
1547 {"ShibExportAssertion", (config_fn_t)ap_set_flag_slot,
1548 (void *) XtOffsetOf (shib_dir_config, bExportAssertion),
1549 OR_AUTHCFG, FLAG, "Export SAML attribute assertion(s) to Shib-Attributes header"},
1550 {"ShibRedirectToSSL", (config_fn_t)ap_set_string_slot,
1551 (void *) XtOffsetOf (shib_dir_config, szRedirectToSSL),
1552 OR_AUTHCFG, TAKE1, "Redirect non-SSL requests to designated port" },
1553 {"AuthGroupFile", (config_fn_t)shib_ap_set_file_slot,
1554 (void *) XtOffsetOf (shib_dir_config, szAuthGrpFile),
1555 OR_AUTHCFG, TAKE1, "text file containing group names and member user IDs"},
1556 {"ShibRequireAll", (config_fn_t)ap_set_flag_slot,
1557 (void *) XtOffsetOf (shib_dir_config, bRequireAll),
1558 OR_AUTHCFG, FLAG, "All require directives must match"},
1559 {"AuthzShibAuthoritative", (config_fn_t)ap_set_flag_slot,
1560 (void *) XtOffsetOf (shib_dir_config, bAuthoritative),
1561 OR_AUTHCFG, FLAG, "Allow failed mod_shib htaccess authorization to fall through to other modules"},
1562 {"ShibUseEnvironment", (config_fn_t)ap_set_flag_slot,
1563 (void *) XtOffsetOf (shib_dir_config, bUseEnvVars),
1564 OR_AUTHCFG, FLAG, "Export attributes using environment variables (default)"},
1565 {"ShibUseHeaders", (config_fn_t)ap_set_flag_slot,
1566 (void *) XtOffsetOf (shib_dir_config, bUseHeaders),
1567 OR_AUTHCFG, FLAG, "Export attributes using custom HTTP headers"},
1568 {"ShibExpireRedirects", (config_fn_t)ap_set_flag_slot,
1569 (void *) XtOffsetOf (shib_dir_config, bExpireRedirects),
1570 OR_AUTHCFG, FLAG, "Expire SP-generated redirects"},
1576 handler_rec shib_handlers[] = {
1577 { "shib-handler", shib_handler },
1581 module MODULE_VAR_EXPORT mod_shib = {
1582 STANDARD_MODULE_STUFF,
1583 nullptr, /* initializer */
1584 create_shib_dir_config, /* dir config creater */
1585 merge_shib_dir_config, /* dir merger --- default is to override */
1586 create_shib_server_config, /* server config */
1587 merge_shib_server_config, /* merge server config */
1588 shire_cmds, /* command table */
1589 shib_handlers, /* handlers */
1590 nullptr, /* filename translation */
1591 shib_check_user, /* check_user_id */
1592 shib_auth_checker, /* check auth */
1593 nullptr, /* check access */
1594 nullptr, /* type_checker */
1595 shib_fixups, /* fixups */
1596 nullptr, /* logger */
1597 nullptr, /* header parser */
1598 shib_child_init, /* child_init */
1599 shib_child_exit, /* child_exit */
1600 shib_post_read /* post read-request */
1603 #elif defined(SHIB_APACHE_20) || defined(SHIB_APACHE_22)
1605 //static const char * const authnPre[] = { "mod_gss.c", nullptr };
1607 extern "C" void shib_register_hooks (apr_pool_t *p)
1609 #ifdef SHIB_DEFERRED_HEADERS
1610 ap_register_output_filter("SHIB_HEADERS_OUT", do_output_filter, nullptr, AP_FTYPE_CONTENT_SET);
1611 ap_hook_insert_filter(set_output_filter, nullptr, nullptr, APR_HOOK_LAST);
1612 ap_register_output_filter("SHIB_HEADERS_ERR", do_error_filter, nullptr, AP_FTYPE_CONTENT_SET);
1613 ap_hook_insert_error_filter(set_error_filter, nullptr, nullptr, APR_HOOK_LAST);
1614 ap_hook_post_read_request(shib_post_read, nullptr, nullptr, APR_HOOK_MIDDLE);
1616 ap_hook_child_init(shib_child_init, nullptr, nullptr, APR_HOOK_MIDDLE);
1617 const char* prereq = getenv("SHIBSP_APACHE_PREREQ");
1618 if (prereq && *prereq) {
1619 const char* const authnPre[] = { prereq, nullptr };
1620 ap_hook_check_user_id(shib_check_user, authnPre, nullptr, APR_HOOK_MIDDLE);
1623 ap_hook_check_user_id(shib_check_user, nullptr, nullptr, APR_HOOK_MIDDLE);
1625 ap_hook_auth_checker(shib_auth_checker, nullptr, nullptr, APR_HOOK_FIRST);
1626 ap_hook_handler(shib_handler, nullptr, nullptr, APR_HOOK_LAST);
1627 ap_hook_fixups(shib_fixups, nullptr, nullptr, APR_HOOK_MIDDLE);
1630 // SHIB Module commands
1633 static command_rec shib_cmds[] = {
1634 AP_INIT_TAKE1("ShibPrefix", (config_fn_t)ap_set_global_string_slot, &g_szPrefix,
1635 RSRC_CONF, "Shibboleth installation directory"),
1636 AP_INIT_TAKE1("ShibConfig", (config_fn_t)ap_set_global_string_slot, &g_szSHIBConfig,
1637 RSRC_CONF, "Path to shibboleth2.xml config file"),
1638 AP_INIT_TAKE1("ShibCatalogs", (config_fn_t)ap_set_global_string_slot, &g_szSchemaDir,
1639 RSRC_CONF, "Paths of XML schema catalogs"),
1640 AP_INIT_TAKE1("ShibGSSKey", (config_fn_t)ap_set_global_string_slot, &g_szGSSContextKey,
1641 RSRC_CONF, "Name of user data key containing GSS context established by GSS module"),
1643 AP_INIT_TAKE1("ShibURLScheme", (config_fn_t)shib_set_server_string_slot,
1644 (void *) offsetof (shib_server_config, szScheme),
1645 RSRC_CONF, "URL scheme to force into generated URLs for a vhost"),
1647 AP_INIT_TAKE2("ShibRequestSetting", (config_fn_t)shib_table_set, nullptr,
1648 OR_AUTHCFG, "Set arbitrary Shibboleth request property for content"),
1650 AP_INIT_TAKE1("ShibAccessControl", (config_fn_t)ap_set_string_slot,
1651 (void *) offsetof (shib_dir_config, szAccessControl),
1652 OR_AUTHCFG, "Set arbitrary Shibboleth access control plugin for content"),
1654 AP_INIT_FLAG("ShibDisable", (config_fn_t)ap_set_flag_slot,
1655 (void *) offsetof (shib_dir_config, bOff),
1656 OR_AUTHCFG, "Disable all Shib module activity here to save processing effort"),
1657 AP_INIT_TAKE1("ShibApplicationId", (config_fn_t)ap_set_string_slot,
1658 (void *) offsetof (shib_dir_config, szApplicationId),
1659 OR_AUTHCFG, "Set Shibboleth applicationId property for content"),
1660 AP_INIT_FLAG("ShibBasicHijack", (config_fn_t)ap_set_flag_slot,
1661 (void *) offsetof (shib_dir_config, bBasicHijack),
1662 OR_AUTHCFG, "(DEPRECATED) Respond to AuthType Basic and convert to shibboleth"),
1663 AP_INIT_FLAG("ShibRequireSession", (config_fn_t)ap_set_flag_slot,
1664 (void *) offsetof (shib_dir_config, bRequireSession),
1665 OR_AUTHCFG, "Initiates a new session if one does not exist"),
1666 AP_INIT_TAKE1("ShibRequireSessionWith", (config_fn_t)ap_set_string_slot,
1667 (void *) offsetof (shib_dir_config, szRequireWith),
1668 OR_AUTHCFG, "Initiates a new session if one does not exist using a specific SessionInitiator"),
1669 AP_INIT_FLAG("ShibExportAssertion", (config_fn_t)ap_set_flag_slot,
1670 (void *) offsetof (shib_dir_config, bExportAssertion),
1671 OR_AUTHCFG, "Export SAML attribute assertion(s) to Shib-Attributes header"),
1672 AP_INIT_TAKE1("ShibRedirectToSSL", (config_fn_t)ap_set_string_slot,
1673 (void *) offsetof (shib_dir_config, szRedirectToSSL),
1674 OR_AUTHCFG, "Redirect non-SSL requests to designated port"),
1675 AP_INIT_TAKE1("AuthGroupFile", (config_fn_t)shib_ap_set_file_slot,
1676 (void *) offsetof (shib_dir_config, szAuthGrpFile),
1677 OR_AUTHCFG, "Text file containing group names and member user IDs"),
1678 AP_INIT_FLAG("ShibRequireAll", (config_fn_t)ap_set_flag_slot,
1679 (void *) offsetof (shib_dir_config, bRequireAll),
1680 OR_AUTHCFG, "All require directives must match"),
1681 AP_INIT_FLAG("AuthzShibAuthoritative", (config_fn_t)ap_set_flag_slot,
1682 (void *) offsetof (shib_dir_config, bAuthoritative),
1683 OR_AUTHCFG, "Allow failed mod_shib htaccess authorization to fall through to other modules"),
1684 AP_INIT_FLAG("ShibUseEnvironment", (config_fn_t)ap_set_flag_slot,
1685 (void *) offsetof (shib_dir_config, bUseEnvVars),
1686 OR_AUTHCFG, "Export attributes using environment variables (default)"),
1687 AP_INIT_FLAG("ShibUseHeaders", (config_fn_t)ap_set_flag_slot,
1688 (void *) offsetof (shib_dir_config, bUseHeaders),
1689 OR_AUTHCFG, "Export attributes using custom HTTP headers"),
1690 AP_INIT_FLAG("ShibExpireRedirects", (config_fn_t)ap_set_flag_slot,
1691 (void *) offsetof (shib_dir_config, bExpireRedirects),
1692 OR_AUTHCFG, "Expire SP-generated redirects"),
1697 module AP_MODULE_DECLARE_DATA mod_shib = {
1698 STANDARD20_MODULE_STUFF,
1699 create_shib_dir_config, /* create dir config */
1700 merge_shib_dir_config, /* merge dir config --- default is to override */
1701 create_shib_server_config, /* create server config */
1702 merge_shib_server_config, /* merge server config */
1703 shib_cmds, /* command table */
1704 shib_register_hooks /* register hooks */
1708 #error "unsupported Apache version"