apache/mod_apache.cpp

   1 /*
   2  * mod_apache.cpp -- the core Apache Module code
   3  *
   4  * Created by:  Derek Atkins <derek@ihtfp.com>
   5  *
   6  * $Id$
   7  */
   8
   9 // SAML Runtime
  10 #include <saml/saml.h>
  11 #include <shib/shib.h>
  12 #include <shib/shib-threads.h>
  13 #include <shib-target/shib-target.h>
  14 #include <xercesc/util/regx/RegularExpression.hpp>
  15
  16 #undef _XPG4_2
  17
  18 // Apache specific header files
  19 #include <httpd.h>
  20 #include <http_config.h>
  21 #include <http_protocol.h>
  22 #include <http_main.h>
  23 #define CORE_PRIVATE
  24 #include <http_core.h>
  25 #include <http_log.h>
  26
  27 #ifndef SHIB_APACHE_13
  28 #include <http_request.h>
  29 #include <apr_strings.h>
  30 #include <apr_pools.h>
  31 #endif
  32
  33 #include <fstream>
  34 #include <sstream>
  35
  36 #ifdef HAVE_UNISTD_H
  37 #include <unistd.h>             // for getpid()
  38 #endif
  39
  40 using namespace std;
  41 using namespace saml;
  42 using namespace shibboleth;
  43 using namespace shibtarget;
  44
  45 extern "C" module MODULE_VAR_EXPORT mod_shib;
  46 int shib_handler(request_rec* r, const IApplication* application, const IPropertySet* sessionProps, SHIRE& shire);
  47
  48 namespace {
  49     char* g_szSHIBConfig = NULL;
  50     char* g_szSchemaDir = NULL;
  51     ShibTargetConfig* g_Config = NULL;
  52     static const char* g_UserDataKey = "_shib_check_user_";
  53 }
  54
  55 // per-dir module configuration structure
  56 struct shib_dir_config
  57 {
  58     // RM Configuration
  59     char* szAuthGrpFile;    // Auth GroupFile name
  60     int bRequireAll;        // all require directives must match, otherwise OR logic
  61
  62     // SHIRE Configuration
  63     int bBasicHijack;       // activate for AuthType Basic?
  64     int bRequireSession;    // require a session?
  65     int bExportAssertion;   // export SAML assertion to the environment?
  66 };
  67
  68 // creates per-directory config structure
  69 extern "C" void* create_shib_dir_config (SH_AP_POOL* p, char* d)
  70 {
  71     shib_dir_config* dc=(shib_dir_config*)ap_pcalloc(p,sizeof(shib_dir_config));
  72     dc->bBasicHijack = -1;
  73     dc->bRequireSession = -1;
  74     dc->bExportAssertion = -1;
  75     dc->bRequireAll = -1;
  76     dc->szAuthGrpFile = NULL;
  77     return dc;
  78 }
  79
  80 // overrides server configuration in directories
  81 extern "C" void* merge_shib_dir_config (SH_AP_POOL* p, void* base, void* sub)
  82 {
  83     shib_dir_config* dc=(shib_dir_config*)ap_pcalloc(p,sizeof(shib_dir_config));
  84     shib_dir_config* parent=(shib_dir_config*)base;
  85     shib_dir_config* child=(shib_dir_config*)sub;
  86
  87     if (child->szAuthGrpFile)
  88         dc->szAuthGrpFile=ap_pstrdup(p,child->szAuthGrpFile);
  89     else if (parent->szAuthGrpFile)
  90         dc->szAuthGrpFile=ap_pstrdup(p,parent->szAuthGrpFile);
  91     else
  92         dc->szAuthGrpFile=NULL;
  93
  94     dc->bBasicHijack=((child->bBasicHijack==-1) ? parent->bBasicHijack : child->bBasicHijack);
  95     dc->bRequireSession=((child->bRequireSession==-1) ? parent->bRequireSession : child->bRequireSession);
  96     dc->bExportAssertion=((child->bExportAssertion==-1) ? parent->bExportAssertion : child->bExportAssertion);
  97     dc->bRequireAll=((child->bRequireAll==-1) ? parent->bRequireAll : child->bRequireAll);
  98     return dc;
  99 }
 100
 101 // generic global slot handlers
 102 extern "C" const char* ap_set_global_string_slot(cmd_parms* parms, void*, const char* arg)
 103 {
 104     *((char**)(parms->info))=ap_pstrdup(parms->pool,arg);
 105     return NULL;
 106 }
 107
 108 typedef const char* (*config_fn_t)(void);
 109
 110 static int shib_error_page(request_rec* r, const IApplication* app, const char* page, ShibMLP& mlp)
 111 {
 112     const IPropertySet* props=app->getPropertySet("Errors");
 113     if (props) {
 114         pair<bool,const char*> p=props->getString(page);
 115         if (p.first) {
 116             ifstream infile(p.second);
 117             if (!infile.fail()) {
 118                 const char* res = mlp.run(infile);
 119                 if (res) {
 120                     r->content_type = ap_psprintf(r->pool, "text/html");
 121                     ap_send_http_header(r);
 122                     ap_rprintf(r, res);
 123                     return DONE;
 124                 }
 125             }
 126         }
 127     }
 128
 129     ap_log_rerror(APLOG_MARK,APLOG_ERR,SH_AP_R(r),
 130         "shib_error_page() could not process shire error template for application %s",app->getId());
 131     return SERVER_ERROR;
 132 }
 133
 134 extern "C" int shib_check_user(request_rec* r)
 135 {
 136     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user: ENTER");
 137     shib_dir_config* dc=(shib_dir_config*)ap_get_module_config(r->per_dir_config,&mod_shib);
 138
 139     ostringstream threadid;
 140     threadid << "[" << getpid() << "] shib_check_user" << '\0';
 141     saml::NDC ndc(threadid.str().c_str());
 142
 143     // This will always be normalized, because Apache uses ap_get_server_name in this API call.
 144     const char* targeturl=ap_construct_url(r->pool,r->unparsed_uri,r);
 145
 146     // We lock the configuration system for the duration.
 147     IConfig* conf=g_Config->getINI();
 148     Locker locker(conf);
 149
 150     // Map request to application and content settings.
 151     IRequestMapper* mapper=conf->getRequestMapper();
 152     Locker locker2(mapper);
 153     IRequestMapper::Settings settings=mapper->getSettingsFromParsedURL(
 154         ap_http_method(r), ap_get_server_name(r), ap_get_server_port(r), r->unparsed_uri
 155         );
 156     pair<bool,const char*> application_id=settings.first->getString("applicationId");
 157     const IApplication* application=conf->getApplication(application_id.second);
 158     const IPropertySet* sessionProps=application ? application->getPropertySet("Sessions") : NULL;
 159     if (!application || !sessionProps) {
 160         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 161            "shib_check_user: unable to map request to application session settings, check configuration");
 162         return SERVER_ERROR;
 163     }
 164
 165     // Declare SHIRE object for this request.
 166     SHIRE shire(application);
 167
 168     // Get location of this application's assertion consumer service and see if this is it.
 169     if (strstr(targeturl,shire.getShireURL(targeturl))) {
 170         return shib_handler(r,application,sessionProps,shire);
 171     }
 172
 173     // We can short circuit the handler if we run this...
 174     apr_pool_userdata_setn((const void*)42,g_UserDataKey,NULL,r->pool);
 175
 176     // Regular access to arbitrary resource...check AuthType
 177     const char *auth_type=ap_auth_type(r);
 178     if (!auth_type)
 179         return DECLINED;
 180
 181     if (strcasecmp(auth_type,"shibboleth")) {
 182         if (!strcasecmp(auth_type,"basic") && dc->bBasicHijack==1) {
 183             core_dir_config* conf=
 184                 (core_dir_config*)ap_get_module_config(r->per_dir_config,
 185                     ap_find_linked_module("http_core.c"));
 186             conf->ap_auth_type="shibboleth";
 187         }
 188         else
 189             return DECLINED;
 190     }
 191
 192     pair<bool,bool> requireSession = settings.first->getBool("requireSession");
 193     if (!requireSession.first || !requireSession.second)
 194         if (dc->bRequireSession==1)
 195             requireSession.second=true;
 196
 197     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user: session check for %s",targeturl);
 198
 199     pair<bool,const char*> shib_cookie=sessionProps->getString("cookieName");
 200     if (!shib_cookie.first) {
 201         ap_log_rerror(APLOG_MARK,APLOG_CRIT|APLOG_NOERRNO,SH_AP_R(r),
 202                       "shib_check_user: no cookieName set for %s",
 203                       application_id.second);
 204         return SERVER_ERROR;
 205     }
 206
 207     // We're in charge, so check for cookie.
 208     const char* session_id=NULL;
 209     const char* cookies=ap_table_get(r->headers_in,"Cookie");
 210
 211     if (cookies) {
 212         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user: cookies found: %s",cookies);
 213         if (session_id=strstr(cookies,shib_cookie.second)) {
 214             // Yep, we found a cookie -- pull it out (our session_id)
 215             session_id+=strlen(shib_cookie.second) + 1; /* Skip over the '=' */
 216             char* cookiebuf = ap_pstrdup(r->pool,session_id);
 217             char* cookieend = strchr(cookiebuf,';');
 218             if (cookieend)
 219                 *cookieend = '\0';    /* Ignore anyting after a ; */
 220             session_id=cookiebuf;
 221         }
 222     }
 223
 224     if (!session_id || !*session_id) {
 225         // If no session required, bail now.
 226         if (!requireSession.second)
 227             return OK;
 228
 229         // No acceptable cookie, and we require a session.  Generate an AuthnRequest.
 230         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user: no cookie found -- redirecting to WAYF");
 231         ap_table_setn(r->headers_out,"Location",ap_pstrdup(r->pool,shire.getAuthnRequest(targeturl)));
 232         return REDIRECT;
 233     }
 234
 235     // Make sure this session is still valid.
 236     RPCError* status = NULL;
 237     ShibMLP markupProcessor(application);
 238     markupProcessor.insert("requestURL", targeturl);
 239
 240     try {
 241         status = shire.sessionIsValid(session_id, r->connection->remote_ip);
 242     }
 243     catch (ShibTargetException &e) {
 244         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user(): %s", e.what());
 245         markupProcessor.insert("errorType", "Session Processing Error");
 246         markupProcessor.insert("errorText", e.what());
 247         markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 248         return shib_error_page(r, application, "shire", markupProcessor);
 249     }
 250 #ifndef _DEBUG
 251     catch (...) {
 252         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user(): caught unexpected error");
 253         markupProcessor.insert("errorType", "Session Processing Error");
 254         markupProcessor.insert("errorText", "Unexpected Exception");
 255         markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 256         return shib_error_page(r, application, "shire", markupProcessor);
 257     }
 258 #endif
 259
 260     // Check the status
 261     if (status->isError()) {
 262         ap_log_rerror(APLOG_MARK,APLOG_INFO|APLOG_NOERRNO,SH_AP_R(r),
 263                       "shib_check_user() session invalid: %s", status->getText());
 264
 265         // If no session required, bail now.
 266         if (!requireSession.second)
 267             return OK;  // XXX: Or should this be DECLINED?
 268                         // Has to be OK because DECLINED will just cause Apache to fail when it can't locate
 269                         // anything to process the AuthType. No session plus requireSession false means
 270                         // do not authenticate the user.
 271         else if (status->isRetryable()) {
 272             // Oops, session is invalid. Generate AuthnRequest.
 273             ap_table_setn(r->headers_out,"Location",ap_pstrdup(r->pool,shire.getAuthnRequest(targeturl)));
 274             delete status;
 275             return REDIRECT;
 276         }
 277         else {
 278             // return the error page to the user
 279             markupProcessor.insert(*status);
 280             delete status;
 281             return shib_error_page(r, application, "shire", markupProcessor);
 282         }
 283     }
 284
 285     delete status;
 286     // set the authtype
 287 #ifdef SHIB_APACHE_13
 288     if (r->connection)
 289         r->connection->ap_auth_type = "shibboleth";
 290 #else
 291     r->ap_auth_type = "shibboleth";
 292 #endif
 293     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user: session successfully verified");
 294
 295     // This is code transferred in from the auth check to export the attributes.
 296     // We could even combine the isSessionValid/getAssertions API...?
 297
 298     RM rm(application);
 299     vector<SAMLAssertion*> assertions;
 300     SAMLAuthenticationStatement* sso_statement=NULL;
 301
 302     try {
 303         status = rm.getAssertions(session_id, r->connection->remote_ip, assertions, &sso_statement);
 304     }
 305     catch (ShibTargetException &e) {
 306         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user(): %s", e.what());
 307         markupProcessor.insert("errorType", "Attribute Processing Error");
 308         markupProcessor.insert("errorText", e.what());
 309         markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 310         return shib_error_page(r, application, "rm", markupProcessor);
 311     }
 312 #ifndef _DEBUG
 313     catch (...) {
 314         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user(): caught unexpected error");
 315         markupProcessor.insert("errorType", "Attribute Processing Error");
 316         markupProcessor.insert("errorText", "Unexpected Exception");
 317         markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 318         return shib_error_page(r, application, "rm", markupProcessor);
 319     }
 320 #endif
 321
 322     if (status->isError()) {
 323         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 324             "shib_check_user() getAssertions failed: %s", status->getText());
 325
 326         markupProcessor.insert(*status);
 327         delete status;
 328         return shib_error_page(r, application, "rm", markupProcessor);
 329     }
 330     delete status;
 331
 332     // Do we have an access control plugin?
 333     if (settings.second) {
 334         Locker acllock(settings.second);
 335         if (!settings.second->authorized(assertions)) {
 336             for (int k = 0; k < assertions.size(); k++)
 337                 delete assertions[k];
 338             delete sso_statement;
 339             ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user(): access control provider denied access");
 340             return shib_error_page(r, application, "access", markupProcessor);
 341         }
 342     }
 343
 344     // Get the AAP providers, which contain the attribute policy info.
 345     Iterator<IAAP*> provs=application->getAAPProviders();
 346
 347     // Clear out the list of mapped attributes
 348     while (provs.hasNext()) {
 349         IAAP* aap=provs.next();
 350         aap->lock();
 351         try {
 352             Iterator<const IAttributeRule*> rules=aap->getAttributeRules();
 353             while (rules.hasNext()) {
 354                 const char* header=rules.next()->getHeader();
 355                 if (header)
 356                     ap_table_unset(r->headers_in,header);
 357             }
 358         }
 359         catch(...) {
 360             aap->unlock();
 361             for (int k = 0; k < assertions.size(); k++)
 362                 delete assertions[k];
 363             delete sso_statement;
 364             ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 365                 "shib_check_user(): caught unexpected error while clearing headers");
 366             markupProcessor.insert("errorType", "Attribute Processing Error");
 367             markupProcessor.insert("errorText", "Unexpected Exception");
 368             markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 369             return shib_error_page(r, application, "rm", markupProcessor);
 370         }
 371         aap->unlock();
 372     }
 373     provs.reset();
 374
 375     // Maybe export the first assertion.
 376     ap_table_unset(r->headers_in,"Shib-Attributes");
 377     pair<bool,bool> exp=settings.first->getBool("exportAssertion");
 378     if (!exp.first || !exp.second)
 379         if (dc->bExportAssertion==1)
 380             exp.second=true;
 381     if (exp.second && assertions.size()) {
 382         string assertion;
 383         RM::serialize(*(assertions[0]), assertion);
 384         ap_table_set(r->headers_in,"Shib-Attributes", assertion.c_str());
 385     }
 386
 387     // Export the SAML AuthnMethod and the origin site name.
 388     ap_table_unset(r->headers_in,"Shib-Origin-Site");
 389     ap_table_unset(r->headers_in,"Shib-Authentication-Method");
 390     if (sso_statement) {
 391         auto_ptr_char os(sso_statement->getSubject()->getNameIdentifier()->getNameQualifier());
 392         auto_ptr_char am(sso_statement->getAuthMethod());
 393         ap_table_set(r->headers_in,"Shib-Origin-Site", os.get());
 394         ap_table_set(r->headers_in,"Shib-Authentication-Method", am.get());
 395     }
 396
 397     ap_table_unset(r->headers_in,"Shib-Application-ID");
 398     ap_table_set(r->headers_in,"Shib-Application-ID",application_id.second);
 399
 400     // Export the attributes.
 401     Iterator<SAMLAssertion*> a_iter(assertions);
 402     while (a_iter.hasNext()) {
 403         SAMLAssertion* assert=a_iter.next();
 404         Iterator<SAMLStatement*> statements=assert->getStatements();
 405         while (statements.hasNext()) {
 406             SAMLAttributeStatement* astate=dynamic_cast<SAMLAttributeStatement*>(statements.next());
 407             if (!astate)
 408                 continue;
 409             Iterator<SAMLAttribute*> attrs=astate->getAttributes();
 410             while (attrs.hasNext()) {
 411                 SAMLAttribute* attr=attrs.next();
 412
 413                 // Are we supposed to export it?
 414                 AAP wrapper(provs,attr->getName(),attr->getNamespace());
 415                 if (wrapper.fail())
 416                     continue;
 417
 418                 Iterator<string> vals=attr->getSingleByteValues();
 419                 if (!strcmp(wrapper->getHeader(),"REMOTE_USER") && vals.hasNext())
 420                     SH_AP_USER(r)=ap_pstrdup(r->pool,vals.next().c_str());
 421                 else {
 422                     int it=0;
 423                     char* header = (char*)ap_table_get(r->headers_in, wrapper->getHeader());
 424                     if (header) {
 425                         header=ap_pstrdup(r->pool, header);
 426                         it++;
 427                     }
 428                     else
 429                         header = ap_pstrdup(r->pool, "");
 430                     for (; vals.hasNext(); it++) {
 431                         string value = vals.next();
 432                         for (string::size_type pos = value.find_first_of(";", string::size_type(0));
 433                                 pos != string::npos;
 434                                 pos = value.find_first_of(";", pos)) {
 435                             value.insert(pos, "\\");
 436                             pos += 2;
 437                         }
 438                         header=ap_pstrcat(r->pool, header, (it ? ";" : ""), value.c_str(), NULL);
 439                     }
 440                     ap_table_setn(r->headers_in, wrapper->getHeader(), header);
 441                }
 442             }
 443         }
 444     }
 445
 446     // clean up memory
 447     for (int k = 0; k < assertions.size(); k++)
 448         delete assertions[k];
 449     delete sso_statement;
 450
 451     return OK;
 452 }
 453
 454 extern "C" int shib_post_handler(request_rec* r)
 455 {
 456 #ifndef SHIB_APACHE_13
 457     // With 2.x, this handler always runs, though last.
 458     // We check if shib_check_user ran, because it will detect a SHIRE request
 459     // and dispatch it directly.
 460     void* data;
 461     apr_pool_userdata_get(&data,g_UserDataKey,r->pool);
 462     if (data==(const void*)42) {
 463         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_post_handler skipped since check_user ran");
 464         return DECLINED;
 465     }
 466 #endif
 467
 468     ostringstream threadid;
 469     threadid << "[" << getpid() << "] shib_post_handler" << '\0';
 470     saml::NDC ndc(threadid.str().c_str());
 471
 472     // We lock the configuration system for the duration.
 473     IConfig* conf=g_Config->getINI();
 474     Locker locker(conf);
 475
 476     // Map request to application and content settings.
 477     IRequestMapper* mapper=conf->getRequestMapper();
 478     Locker locker2(mapper);
 479     IRequestMapper::Settings settings=mapper->getSettingsFromParsedURL(
 480         ap_http_method(r), ap_get_server_name(r), ap_get_server_port(r), r->unparsed_uri
 481         );
 482     pair<bool,const char*> application_id=settings.first->getString("applicationId");
 483     const IApplication* application=conf->getApplication(application_id.second);
 484     const IPropertySet* sessionProps=application ? application->getPropertySet("Sessions") : NULL;
 485     if (!application || !sessionProps) {
 486         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 487            "shib_post_handler: unable to map request to application session settings, check configuration");
 488         return SERVER_ERROR;
 489     }
 490
 491     // Declare SHIRE object for this request.
 492     SHIRE shire(application);
 493
 494     return shib_handler(r, application, sessionProps, shire);
 495 }
 496
 497 int shib_handler(request_rec* r, const IApplication* application, const IPropertySet* sessionProps, SHIRE& shire)
 498 {
 499     // Prime the pump...
 500     const char* targeturl = ap_construct_url(r->pool,r->unparsed_uri,r);
 501
 502     // Make sure we only process the SHIRE requests.
 503     if (!strstr(targeturl,shire.getShireURL(targeturl)))
 504         return DECLINED;
 505
 506     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_handler() running");
 507
 508     pair<bool,const char*> shib_cookie=sessionProps->getString("cookieName");
 509     pair<bool,const char*> shib_cookie_props=sessionProps->getString("cookieProps");
 510     if (!shib_cookie.first) {
 511         ap_log_rerror(APLOG_MARK,APLOG_CRIT|APLOG_NOERRNO,SH_AP_R(r),
 512             "shib_handler: no cookieName set for %s", application->getId());
 513         return SERVER_ERROR;
 514     }
 515
 516     ShibMLP markupProcessor(application);
 517     markupProcessor.insert("requestURL", targeturl);
 518
 519     // Process SHIRE request
 520     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_handler() Beginning SHIRE processing");
 521
 522     try {
 523         pair<bool,bool> shireSSL=sessionProps->getBool("shireSSL");
 524
 525         // Make sure this is SSL, if it should be
 526         if ((!shireSSL.first || shireSSL.second) && strcmp(ap_http_method(r),"https"))
 527             throw ShibTargetException(SHIBRPC_OK, "blocked non-SSL access to session creation service");
 528
 529         // If this is a GET, we manufacture an AuthnRequest.
 530         if (!strcasecmp(r->method,"GET")) {
 531             const char* areq=r->args ? shire.getLazyAuthnRequest(r->args) : NULL;
 532             if (!areq)
 533                 throw ShibTargetException(SHIBRPC_OK, "malformed arguments to request a new session");
 534             ap_table_setn(r->headers_out, "Location", ap_pstrdup(r->pool,areq));
 535             return REDIRECT;
 536         }
 537         else if (strcasecmp(r->method,"POST")) {
 538             throw ShibTargetException(SHIBRPC_OK, "blocked non-POST to SHIRE POST processor");
 539         }
 540
 541         // Sure sure this POST is an appropriate content type
 542         const char *ct = ap_table_get(r->headers_in, "Content-type");
 543         if (!ct || strcasecmp(ct, "application/x-www-form-urlencoded"))
 544             throw ShibTargetException(SHIBRPC_OK,
 545                                       ap_psprintf(r->pool, "blocked bad content-type to SHIRE POST processor: %s", (ct ? ct : "")));
 546
 547         // Read the posted data
 548         if (ap_setup_client_block(r, REQUEST_CHUNKED_ERROR))
 549             throw ShibTargetException(SHIBRPC_OK, "CGI setup_client_block failed");
 550         if (!ap_should_client_block(r))
 551             throw ShibTargetException(SHIBRPC_OK, "CGI should_client_block failed");
 552         if (r->remaining > 1024*1024)
 553             throw ShibTargetException (SHIBRPC_OK, "CGI length too long...");
 554
 555         string cgistr;
 556         char buff[HUGE_STRING_LEN];
 557         ap_hard_timeout("[mod_shib] CGI Parser", r);
 558         memset(buff, 0, sizeof(buff));
 559         while (ap_get_client_block(r, buff, sizeof(buff)-1) > 0) {
 560             cgistr += buff;
 561             memset(buff, 0, sizeof(buff));
 562         }
 563         ap_kill_timeout(r);
 564
 565         // Parse the submission.
 566         pair<const char*,const char*> elements=shire.getFormSubmission(cgistr.c_str(),cgistr.length());
 567
 568         // Make sure the SAML Response parameter exists
 569         if (!elements.first || !*elements.first)
 570             throw ShibTargetException(SHIBRPC_OK, "SHIRE POST failed to find SAMLResponse form element");
 571
 572         // Make sure the target parameter exists
 573         if (!elements.second || !*elements.second)
 574             throw ShibTargetException(SHIBRPC_OK, "SHIRE POST failed to find TARGET form element");
 575
 576         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 577             "shib_handler() Processing POST for target: %s", elements.second);
 578
 579         // process the post
 580         string cookie;
 581         RPCError* status = shire.sessionCreate(elements.first, r->connection->remote_ip, cookie);
 582
 583         if (status->isError()) {
 584             ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 585                     "shib_handler() POST process failed (%d): %s", status->getCode(), status->getText());
 586
 587             if (status->isRetryable()) {
 588                 delete status;
 589                 ap_log_rerror(APLOG_MARK,APLOG_INFO|APLOG_NOERRNO,SH_AP_R(r),
 590                         "shib_handler() retryable error, generating new AuthnRequest");
 591                 ap_table_setn(r->headers_out,"Location",ap_pstrdup(r->pool,shire.getAuthnRequest(elements.second)));
 592                 return REDIRECT;
 593             }
 594
 595             // return this error to the user.
 596             markupProcessor.insert(*status);
 597             delete status;
 598             return shib_error_page(r, application, "shire", markupProcessor);
 599         }
 600         delete status;
 601
 602         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 603                   "shib_handler() POST process succeeded.  New session: %s", cookie.c_str());
 604
 605         // We've got a good session, set the cookie...
 606         char* val = ap_psprintf(r->pool,"%s=%s%s",shib_cookie.second,cookie.c_str(),
 607             shib_cookie_props.first ? shib_cookie_props.second : "; path=/");
 608         ap_table_setn(r->err_headers_out, "Set-Cookie", val);
 609         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_handler() setting cookie: %s", val);
 610
 611         // ... and redirect to the target
 612         ap_table_setn(r->headers_out, "Location", ap_pstrdup(r->pool,elements.second));
 613         return REDIRECT;
 614     }
 615     catch (ShibTargetException &e) {
 616         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_handler() caught exception: %s", e.what());
 617         markupProcessor.insert("errorType", "Session Creation Service Error");
 618         markupProcessor.insert("errorText", e.what());
 619         markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 620         return shib_error_page(r, application, "shire", markupProcessor);
 621     }
 622 #ifndef _DEBUG
 623     catch (...) {
 624         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_handler(): unexpected exception");
 625         markupProcessor.insert("errorType", "Session Creation Service Error");
 626         markupProcessor.insert("errorText", "Unknown Exception");
 627         markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 628         return shib_error_page(r, application, "shire", markupProcessor);
 629     }
 630 #endif
 631
 632     ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),"shib_handler() server error");
 633     return SERVER_ERROR;
 634 }
 635
 636 static SH_AP_TABLE* groups_for_user(request_rec* r, const char* user, char* grpfile)
 637 {
 638     SH_AP_CONFIGFILE* f;
 639     SH_AP_TABLE* grps=ap_make_table(r->pool,15);
 640     char l[MAX_STRING_LEN];
 641     const char *group_name, *ll, *w;
 642
 643 #ifdef SHIB_APACHE_13
 644     if (!(f=ap_pcfg_openfile(r->pool,grpfile))) {
 645 #else
 646     if (ap_pcfg_openfile(&f,r->pool,grpfile) != APR_SUCCESS) {
 647 #endif
 648         ap_log_rerror(APLOG_MARK,APLOG_DEBUG,SH_AP_R(r),"groups_for_user() could not open group file: %s\n",grpfile);
 649         return NULL;
 650     }
 651
 652     SH_AP_POOL* sp;
 653 #ifdef SHIB_APACHE_13
 654     sp=ap_make_sub_pool(r->pool);
 655 #else
 656     if (apr_pool_create(&sp,r->pool) != APR_SUCCESS) {
 657         ap_log_rerror(APLOG_MARK,APLOG_ERR,0,r,
 658             "groups_for_user() could not create a subpool");
 659         return NULL;
 660     }
 661 #endif
 662
 663     while (!(ap_cfg_getline(l,MAX_STRING_LEN,f))) {
 664         if ((*l=='#') || (!*l))
 665             continue;
 666         ll = l;
 667         ap_clear_pool(sp);
 668
 669         group_name=ap_getword(sp,&ll,':');
 670
 671         while (*ll) {
 672             w=ap_getword_conf(sp,&ll);
 673             if (!strcmp(w,user)) {
 674                 ap_table_setn(grps,ap_pstrdup(r->pool,group_name),"in");
 675                 break;
 676             }
 677         }
 678     }
 679     ap_cfg_closefile(f);
 680     ap_destroy_pool(sp);
 681     return grps;
 682 }
 683
 684 /*
 685  * shib_auth_checker() -- a simple resource manager to
 686  * process the .htaccess settings and copy attributes
 687  * into the HTTP headers.
 688  */
 689 extern "C" int shib_auth_checker(request_rec* r)
 690 {
 691     shib_dir_config* dc=
 692         (shib_dir_config*)ap_get_module_config(r->per_dir_config,&mod_shib);
 693
 694     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() executing");
 695
 696     // Regular access to arbitrary resource...check AuthType
 697     const char* auth_type=ap_auth_type(r);
 698     if (!auth_type || strcasecmp(auth_type,"shibboleth"))
 699         return DECLINED;
 700
 701     ostringstream threadid;
 702     threadid << "[" << getpid() << "] shibrm" << '\0';
 703     saml::NDC ndc(threadid.str().c_str());
 704
 705     // We lock the configuration system for the duration.
 706     IConfig* conf=g_Config->getINI();
 707     Locker locker(conf);
 708
 709     const char* application_id=ap_table_get(r->headers_in,"Shib-Application-ID");
 710     const IApplication* application=NULL;
 711     if (application_id)
 712         application = conf->getApplication(application_id);
 713
 714     // mod_auth clone
 715
 716     int m=r->method_number;
 717     bool method_restricted=false;
 718     const char *t, *w;
 719
 720     const array_header* reqs_arr=ap_requires(r);
 721     if (!reqs_arr)
 722         return OK;
 723
 724     require_line* reqs=(require_line*)reqs_arr->elts;
 725
 726     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"REQUIRE nelts: %d", reqs_arr->nelts);
 727     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"REQUIRE all: %d", dc->bRequireAll);
 728
 729     vector<bool> auth_OK(reqs_arr->nelts,false);
 730
 731 #define SHIB_AP_CHECK_IS_OK {       \
 732      if (dc->bRequireAll < 1)    \
 733          return OK;      \
 734      auth_OK[x] = true;      \
 735      continue;           \
 736 }
 737
 738     for (int x=0; x<reqs_arr->nelts; x++) {
 739         auth_OK[x] = false;
 740         if (!(reqs[x].method_mask & (1 << m)))
 741             continue;
 742         method_restricted=true;
 743
 744         t = reqs[x].requirement;
 745         w = ap_getword_white(r->pool, &t);
 746
 747         if (!strcasecmp(w,"Shibboleth")) {
 748             // This is a dummy rule needed because Apache conflates authn and authz.
 749             // Without some require rule, AuthType is ignored and no check_user hooks run.
 750             SHIB_AP_CHECK_IS_OK;
 751         }
 752         else if (!strcmp(w,"valid-user") && application_id) {
 753             ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() accepting valid-user");
 754             SHIB_AP_CHECK_IS_OK;
 755         }
 756         else if (!strcmp(w,"user") && SH_AP_USER(r)) {
 757             bool regexp=false;
 758             while (*t) {
 759                 w=ap_getword_conf(r->pool,&t);
 760                 if (*w=='~') {
 761                     regexp=true;
 762                     continue;
 763                 }
 764
 765                 if (regexp) {
 766                     try {
 767                         // To do regex matching, we have to convert from UTF-8.
 768                         auto_ptr<XMLCh> trans(fromUTF8(w));
 769                         RegularExpression re(trans.get());
 770                         auto_ptr<XMLCh> trans2(fromUTF8(SH_AP_USER(r)));
 771                         if (re.matches(trans2.get())) {
 772                             ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() accepting user: %s",w);
 773                             SHIB_AP_CHECK_IS_OK;
 774                         }
 775                     }
 776                     catch (XMLException& ex) {
 777                         auto_ptr_char tmp(ex.getMessage());
 778                         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 779                                         "shib_auth_checker caught exception while parsing regular expression (%s): %s",w,tmp.get());
 780                     }
 781                 }
 782                 else if (!strcmp(SH_AP_USER(r),w)) {
 783                     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() accepting user: %s",w);
 784                     SHIB_AP_CHECK_IS_OK;
 785                 }
 786             }
 787         }
 788         else if (!strcmp(w,"group")) {
 789             SH_AP_TABLE* grpstatus=NULL;
 790             if (dc->szAuthGrpFile && SH_AP_USER(r)) {
 791                 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() using groups file: %s\n",dc->szAuthGrpFile);
 792                 grpstatus=groups_for_user(r,SH_AP_USER(r),dc->szAuthGrpFile);
 793             }
 794             if (!grpstatus)
 795                 return DECLINED;
 796
 797             while (*t) {
 798                 w=ap_getword_conf(r->pool,&t);
 799                 if (ap_table_get(grpstatus,w)) {
 800                     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() accepting group: %s",w);
 801                     SHIB_AP_CHECK_IS_OK;
 802                 }
 803             }
 804         }
 805         else {
 806             Iterator<IAAP*> provs=application ? application->getAAPProviders() : EMPTY(IAAP*);
 807             AAP wrapper(provs,w);
 808             if (wrapper.fail()) {
 809                 ap_log_rerror(APLOG_MARK,APLOG_WARNING|APLOG_NOERRNO,SH_AP_R(r),
 810                     "shib_auth_checker() didn't recognize require rule: %s\n",w);
 811                 continue;
 812             }
 813
 814             bool regexp=false;
 815             const char* vals=ap_table_get(r->headers_in,wrapper->getHeader());
 816             while (*t && vals) {
 817                 w=ap_getword_conf(r->pool,&t);
 818                 if (*w=='~') {
 819                     regexp=true;
 820                     continue;
 821                 }
 822
 823                 try {
 824                     auto_ptr<RegularExpression> re;
 825                     if (regexp) {
 826                         delete re.release();
 827                         auto_ptr<XMLCh> trans(fromUTF8(w));
 828                         auto_ptr<RegularExpression> temp(new RegularExpression(trans.get()));
 829                         re=temp;
 830                     }
 831
 832                     string vals_str(vals);
 833                     int j = 0;
 834                     for (int i = 0;  i < vals_str.length();  i++) {
 835                         if (vals_str.at(i) == ';') {
 836                             if (i == 0) {
 837                                 ap_log_rerror(APLOG_MARK,APLOG_WARNING|APLOG_NOERRNO,SH_AP_R(r),
 838                                                 "shib_auth_checker() invalid header encoding %s: starts with semicolon", vals);
 839                                 return SERVER_ERROR;
 840                             }
 841
 842                             if (vals_str.at(i-1) == '\\') {
 843                                 vals_str.erase(i-1, 1);
 844                                 i--;
 845                                 continue;
 846                             }
 847
 848                             string val = vals_str.substr(j, i-j);
 849                             j = i+1;
 850                             if (regexp) {
 851                                 auto_ptr<XMLCh> trans(fromUTF8(val.c_str()));
 852                                 if (re->matches(trans.get())) {
 853                                     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 854                                                     "shib_auth_checker() expecting %s, got %s: authorization granted", w, val.c_str());
 855                                     SHIB_AP_CHECK_IS_OK;
 856                                 }
 857                             }
 858                             else if (val==w) {
 859                                 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 860                                                 "shib_auth_checker() expecting %s, got %s: authorization granted", w, val.c_str());
 861                                 SHIB_AP_CHECK_IS_OK;
 862                             }
 863                             else {
 864                                 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 865                                                 "shib_auth_checker() expecting %s, got %s: authorization not granted", w, val.c_str());
 866                             }
 867                         }
 868                     }
 869
 870                     string val = vals_str.substr(j, vals_str.length()-j);
 871                     if (regexp) {
 872                         auto_ptr<XMLCh> trans(fromUTF8(val.c_str()));
 873                         if (re->matches(trans.get())) {
 874                             ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 875                                             "shib_auth_checker() expecting %s, got %s: authorization granted", w, val.c_str());
 876                             SHIB_AP_CHECK_IS_OK;
 877                         }
 878                     }
 879                     else if (val==w) {
 880                         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 881                                         "shib_auth_checker() expecting %s, got %s: authorization granted", w, val.c_str());
 882                         SHIB_AP_CHECK_IS_OK;
 883                     }
 884                     else {
 885                         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 886                                         "shib_auth_checker() expecting %s, got %s: authorization not granted", w, val.c_str());
 887                     }
 888                 }
 889                 catch (XMLException& ex) {
 890                     auto_ptr_char tmp(ex.getMessage());
 891                     ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 892                                     "shib_auth_checker caught exception while parsing regular expression (%s): %s",w,tmp.get());
 893                 }
 894             }
 895         }
 896     }
 897
 898     // check if all require directives are true
 899     bool auth_all_OK = true;
 900     for (int i= 0; i<reqs_arr->nelts; i++) {
 901         auth_all_OK &= auth_OK[i];
 902     }
 903     if (auth_all_OK)
 904         return OK;
 905
 906     if (!method_restricted)
 907         return OK;
 908
 909     if (!application_id) {
 910         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 911            "shib_auth_checker: Shib-Application-ID header not found in request");
 912         return HTTP_FORBIDDEN;
 913     }
 914     else if (!application) {
 915         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 916            "shib_auth_checker: unable to map request to application settings, check configuration");
 917         return HTTP_FORBIDDEN;
 918     }
 919
 920     ShibMLP markupProcessor(application);
 921     markupProcessor.insert("requestURL", ap_construct_url(r->pool,r->unparsed_uri,r));
 922     return shib_error_page(r, application, "access", markupProcessor);
 923 }
 924
 925 /*
 926  * shib_exit()
 927  *  Cleanup the (per-process) pool info.
 928  */
 929 #ifdef SHIB_APACHE_13
 930 extern "C" void shib_exit(server_rec* s, SH_AP_POOL* p)
 931 {
 932 #else
 933 extern "C" apr_status_t shib_exit(void* data)
 934 {
 935     server_rec* s = NULL;
 936 #endif
 937     g_Config->shutdown();
 938     g_Config = NULL;
 939     ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_exit() done");
 940 #ifndef SHIB_APACHE_13
 941     return OK;
 942 #endif
 943 }
 944
 945 /*
 946  * shire_child_init()
 947  *  Things to do when the child process is initialized.
 948  *  (or after the configs are read in apache-2)
 949  */
 950 #ifdef SHIB_APACHE_13
 951 extern "C" void shib_child_init(server_rec* s, SH_AP_POOL* p)
 952 #else
 953 extern "C" int shib_post_config(apr_pool_t* pconf, apr_pool_t* plog,
 954                                 apr_pool_t* ptemp, server_rec* s)
 955 #endif
 956 {
 957     // Initialize runtime components.
 958
 959     ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() starting");
 960
 961     if (g_Config) {
 962         ap_log_error(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() already initialized!");
 963 #ifdef SHIB_APACHE_13
 964         exit(1);
 965 #else
 966         return OK;
 967 #endif
 968     }
 969
 970     try {
 971         g_Config=&ShibTargetConfig::getConfig();
 972         g_Config->setFeatures(
 973             ShibTargetConfig::Listener |
 974             ShibTargetConfig::Metadata |
 975             ShibTargetConfig::AAP |
 976             ShibTargetConfig::RequestMapper |
 977             ShibTargetConfig::SHIREExtensions
 978             );
 979         if (!g_Config->init(g_szSchemaDir,g_szSHIBConfig)) {
 980             ap_log_error(APLOG_MARK,APLOG_CRIT|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() failed to initialize SHIB Target");
 981             exit(1);
 982         }
 983     }
 984     catch (...) {
 985         ap_log_error(APLOG_MARK,APLOG_CRIT|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() failed to initialize SHIB Target");
 986         exit (1);
 987     }
 988
 989     // Set the cleanup handler
 990     apr_pool_cleanup_register(pconf, NULL, shib_exit, NULL);
 991
 992     ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() done");
 993
 994 #ifndef SHIB_APACHE_13
 995     return OK;
 996 #endif
 997 }
 998
 999 #ifdef SHIB_APACHE_13
1000
1001 // SHIB Module commands
1002
1003 static command_rec shire_cmds[] = {
1004   {"SHIREConfig", (config_fn_t)ap_set_global_string_slot, &g_szSHIBConfig,
1005    RSRC_CONF, TAKE1, "Path to shibboleth.xml config file."},
1006   {"ShibConfig", (config_fn_t)ap_set_global_string_slot, &g_szSHIBConfig,
1007    RSRC_CONF, TAKE1, "Path to shibboleth.xml config file."},
1008   {"ShibSchemaDir", (config_fn_t)ap_set_global_string_slot, &g_szSchemaDir,
1009    RSRC_CONF, TAKE1, "Path to Shibboleth XML schema directory."},
1010
1011   {"ShibBasicHijack", (config_fn_t)ap_set_flag_slot,
1012    (void *) XtOffsetOf (shib_dir_config, bBasicHijack),
1013    OR_AUTHCFG, FLAG, "Respond to AuthType Basic and convert to shib?"},
1014   {"ShibRequireSession", (config_fn_t)ap_set_flag_slot,
1015    (void *) XtOffsetOf (shib_dir_config, bRequireSession),
1016    OR_AUTHCFG, FLAG, "Initiates a new session if one does not exist."},
1017   {"ShibExportAssertion", (config_fn_t)ap_set_flag_slot,
1018    (void *) XtOffsetOf (shib_dir_config, bExportAssertion),
1019    OR_AUTHCFG, FLAG, "Export SAML assertion to Shibboleth-defined header?"},
1020   {"AuthGroupFile", (config_fn_t)ap_set_file_slot,
1021    (void *) XtOffsetOf (shib_dir_config, szAuthGrpFile),
1022    OR_AUTHCFG, TAKE1, "text file containing group names and member user IDs"},
1023   {"ShibRequireAll", (config_fn_t)ap_set_flag_slot,
1024    (void *) XtOffsetOf (shib_dir_config, bRequireAll),
1025    OR_AUTHCFG, FLAG, "All require directives must match!"},
1026
1027   {NULL}
1028 };
1029
1030 extern "C"{
1031 handler_rec shib_handlers[] = {
1032   { "shib-shire-post", shib_post_handler },
1033   { NULL }
1034 };
1035
1036 module MODULE_VAR_EXPORT mod_shib = {
1037     STANDARD_MODULE_STUFF,
1038     NULL,                        /* initializer */
1039     create_shib_dir_config,     /* dir config creater */
1040     merge_shib_dir_config,      /* dir merger --- default is to override */
1041     NULL,                       /* server config */
1042     NULL,                       /* merge server config */
1043     shire_cmds,                 /* command table */
1044     shib_handlers,              /* handlers */
1045     NULL,                       /* filename translation */
1046     shib_check_user,            /* check_user_id */
1047     shib_auth_checker,          /* check auth */
1048     NULL,                       /* check access */
1049     NULL,                       /* type_checker */
1050     NULL,                       /* fixups */
1051     NULL,                       /* logger */
1052     NULL,                       /* header parser */
1053     shib_child_init,            /* child_init */
1054     shib_exit,                  /* child_exit */
1055     NULL                        /* post read-request */
1056 };
1057
1058 #elif defined(SHIB_APACHE_20)
1059
1060 extern "C" void shib_register_hooks (apr_pool_t *p)
1061 {
1062   ap_hook_post_config(shib_post_config, NULL, NULL, APR_HOOK_MIDDLE);
1063   ap_hook_check_user_id(shib_check_user, NULL, NULL, APR_HOOK_MIDDLE);
1064   ap_hook_auth_checker(shib_auth_checker, NULL, NULL, APR_HOOK_FIRST);
1065   ap_hook_handler(shib_post_handler, NULL, NULL, APR_HOOK_LAST);
1066 }
1067
1068 // SHIB Module commands
1069
1070 extern "C" {
1071 static command_rec shib_cmds[] = {
1072   AP_INIT_TAKE1("ShibConfig",
1073                 (config_fn_t)ap_set_global_string_slot, &g_szSHIBConfig,
1074                 RSRC_CONF, "Path to shibboleth.xml config file."),
1075   AP_INIT_TAKE1("ShibSchemaDir",
1076      (config_fn_t)ap_set_global_string_slot, &g_szSchemaDir,
1077       RSRC_CONF, "Path to Shibboleth XML schema directory."),
1078
1079   AP_INIT_FLAG("ShibBasicHijack", (config_fn_t)ap_set_flag_slot,
1080                (void *) offsetof (shib_dir_config, bBasicHijack),
1081                OR_AUTHCFG, "Respond to AuthType Basic and convert to shib?"),
1082   AP_INIT_FLAG("ShibRequireSession", (config_fn_t)ap_set_flag_slot,
1083          (void *) offsetof (shib_dir_config, bRequireSession),
1084         OR_AUTHCFG, "Initiates a new session if one does not exist."),
1085   AP_INIT_FLAG("ShibExportAssertion", (config_fn_t)ap_set_flag_slot,
1086          (void *) offsetof (shib_dir_config, bExportAssertion),
1087         OR_AUTHCFG, "Export SAML assertion to Shibboleth-defined header?"),
1088   AP_INIT_TAKE1("AuthGroupFile", (config_fn_t)ap_set_file_slot,
1089                 (void *) offsetof (shib_dir_config, szAuthGrpFile),
1090                 OR_AUTHCFG, "text file containing group names and member user IDs"),
1091   AP_INIT_FLAG("ShibRequireAll", (config_fn_t)ap_set_flag_slot,
1092                (void *) offsetof (shib_dir_config, bRequireAll),
1093                OR_AUTHCFG, "All require directives must match!"),
1094
1095   {NULL}
1096 };
1097
1098 module AP_MODULE_DECLARE_DATA mod_shib = {
1099     STANDARD20_MODULE_STUFF,
1100     create_shib_dir_config,     /* create dir config */
1101     merge_shib_dir_config,      /* merge dir config --- default is to override */
1102     NULL,                       /* create server config */
1103     NULL,                       /* merge server config */
1104     shib_cmds,                  /* command table */
1105     shib_register_hooks         /* register hooks */
1106 };
1107
1108 #else
1109 #error "undefined APACHE version"
1110 #endif
1111
1112 }