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, 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,props);
 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     if (!application) {
 159         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 160            "shib_check_user: unable to map request to application settings, check configuration");
 161         return SERVER_ERROR;
 162     }
 163
 164     // Declare SHIRE object for this request.
 165     SHIRE shire(application);
 166
 167     // Get location of this application's assertion consumer service and see if this is it.
 168     if (strstr(targeturl,shire.getShireURL(targeturl))) {
 169         return shib_handler(r,application,shire);
 170     }
 171
 172     // We can short circuit the handler if we run this...
 173     apr_pool_userdata_setn((const void*)42,g_UserDataKey,NULL,r->pool);
 174
 175     // Regular access to arbitrary resource...check AuthType
 176     const char *auth_type=ap_auth_type(r);
 177     if (!auth_type)
 178         return DECLINED;
 179
 180     if (strcasecmp(auth_type,"shibboleth")) {
 181         if (!strcasecmp(auth_type,"basic") && dc->bBasicHijack==1) {
 182             core_dir_config* conf=
 183                 (core_dir_config*)ap_get_module_config(r->per_dir_config,
 184                     ap_find_linked_module("http_core.c"));
 185             conf->ap_auth_type="shibboleth";
 186         }
 187         else
 188             return DECLINED;
 189     }
 190
 191     pair<bool,bool> requireSession = settings.first->getBool("requireSession");
 192     if (!requireSession.first || !requireSession.second)
 193         if (dc->bRequireSession==1)
 194             requireSession.second=true;
 195
 196     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user: session check for %s",targeturl);
 197
 198     pair<const char*,const char*> shib_cookie=shire.getCookieNameProps();   // always returns *something*
 199
 200     // We're in charge, so check for cookie.
 201     const char* session_id=NULL;
 202     const char* cookies=ap_table_get(r->headers_in,"Cookie");
 203
 204     if (cookies) {
 205         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user: cookies found: %s",cookies);
 206         if (session_id=strstr(cookies,shib_cookie.first)) {
 207             // Yep, we found a cookie -- pull it out (our session_id)
 208             session_id+=strlen(shib_cookie.first) + 1; /* Skip over the '=' */
 209             char* cookiebuf = ap_pstrdup(r->pool,session_id);
 210             char* cookieend = strchr(cookiebuf,';');
 211             if (cookieend)
 212                 *cookieend = '\0';    /* Ignore anyting after a ; */
 213             session_id=cookiebuf;
 214         }
 215     }
 216
 217     if (!session_id || !*session_id) {
 218         // If no session required, bail now.
 219         if (!requireSession.second)
 220             return OK;
 221
 222         // No acceptable cookie, and we require a session.  Generate an AuthnRequest.
 223         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user: no cookie found -- redirecting to WAYF");
 224         ap_table_setn(r->headers_out,"Location",ap_pstrdup(r->pool,shire.getAuthnRequest(targeturl)));
 225         return REDIRECT;
 226     }
 227
 228     // Make sure this session is still valid.
 229     RPCError* status = NULL;
 230     ShibMLP markupProcessor;
 231     markupProcessor.insert("requestURL", targeturl);
 232
 233     try {
 234         status = shire.sessionIsValid(session_id, r->connection->remote_ip);
 235     }
 236     catch (ShibTargetException &e) {
 237         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user(): %s", e.what());
 238         markupProcessor.insert("errorType", "Session Processing Error");
 239         markupProcessor.insert("errorText", e.what());
 240         markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 241         return shib_error_page(r, application, "shire", markupProcessor);
 242     }
 243 #ifndef _DEBUG
 244     catch (...) {
 245         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user(): caught unexpected error");
 246         markupProcessor.insert("errorType", "Session Processing Error");
 247         markupProcessor.insert("errorText", "Unexpected Exception");
 248         markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 249         return shib_error_page(r, application, "shire", markupProcessor);
 250     }
 251 #endif
 252
 253     // Check the status
 254     if (status->isError()) {
 255         ap_log_rerror(APLOG_MARK,APLOG_INFO|APLOG_NOERRNO,SH_AP_R(r),
 256                       "shib_check_user() session invalid: %s", status->getText());
 257
 258         // If no session required, bail now.
 259         if (!requireSession.second)
 260             return OK;  // XXX: Or should this be DECLINED?
 261                         // Has to be OK because DECLINED will just cause Apache to fail when it can't locate
 262                         // anything to process the AuthType. No session plus requireSession false means
 263                         // do not authenticate the user.
 264         else if (status->isRetryable()) {
 265             // Oops, session is invalid. Generate AuthnRequest.
 266             ap_table_setn(r->headers_out,"Location",ap_pstrdup(r->pool,shire.getAuthnRequest(targeturl)));
 267             delete status;
 268             return REDIRECT;
 269         }
 270         else {
 271             // return the error page to the user
 272             markupProcessor.insert(*status);
 273             delete status;
 274             return shib_error_page(r, application, "shire", markupProcessor);
 275         }
 276     }
 277
 278     delete status;
 279     // set the authtype
 280 #ifdef SHIB_APACHE_13
 281     if (r->connection)
 282         r->connection->ap_auth_type = "shibboleth";
 283 #else
 284     r->ap_auth_type = "shibboleth";
 285 #endif
 286     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user: session successfully verified");
 287
 288     // This is code transferred in from the auth check to export the attributes.
 289     // We could even combine the isSessionValid/getAssertions API...?
 290
 291     RM rm(application);
 292     vector<SAMLAssertion*> assertions;
 293     SAMLAuthenticationStatement* sso_statement=NULL;
 294
 295     try {
 296         status = rm.getAssertions(session_id, r->connection->remote_ip, assertions, &sso_statement);
 297     }
 298     catch (ShibTargetException &e) {
 299         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user(): %s", e.what());
 300         markupProcessor.insert("errorType", "Attribute Processing Error");
 301         markupProcessor.insert("errorText", e.what());
 302         markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 303         return shib_error_page(r, application, "rm", markupProcessor);
 304     }
 305 #ifndef _DEBUG
 306     catch (...) {
 307         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user(): caught unexpected error");
 308         markupProcessor.insert("errorType", "Attribute Processing Error");
 309         markupProcessor.insert("errorText", "Unexpected Exception");
 310         markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 311         return shib_error_page(r, application, "rm", markupProcessor);
 312     }
 313 #endif
 314
 315     if (status->isError()) {
 316         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 317             "shib_check_user() getAssertions failed: %s", status->getText());
 318
 319         markupProcessor.insert(*status);
 320         delete status;
 321         return shib_error_page(r, application, "rm", markupProcessor);
 322     }
 323     delete status;
 324
 325     // Do we have an access control plugin?
 326     if (settings.second) {
 327         Locker acllock(settings.second);
 328         if (!settings.second->authorized(assertions)) {
 329             for (int k = 0; k < assertions.size(); k++)
 330                 delete assertions[k];
 331             delete sso_statement;
 332             ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user(): access control provider denied access");
 333             return shib_error_page(r, application, "access", markupProcessor);
 334         }
 335     }
 336
 337     // Get the AAP providers, which contain the attribute policy info.
 338     Iterator<IAAP*> provs=application->getAAPProviders();
 339
 340     // Clear out the list of mapped attributes
 341     while (provs.hasNext()) {
 342         IAAP* aap=provs.next();
 343         aap->lock();
 344         try {
 345             Iterator<const IAttributeRule*> rules=aap->getAttributeRules();
 346             while (rules.hasNext()) {
 347                 const char* header=rules.next()->getHeader();
 348                 if (header)
 349                     ap_table_unset(r->headers_in,header);
 350             }
 351         }
 352         catch(...) {
 353             aap->unlock();
 354             for (int k = 0; k < assertions.size(); k++)
 355                 delete assertions[k];
 356             delete sso_statement;
 357             ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 358                 "shib_check_user(): caught unexpected error while clearing headers");
 359             markupProcessor.insert("errorType", "Attribute Processing Error");
 360             markupProcessor.insert("errorText", "Unexpected Exception");
 361             markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 362             return shib_error_page(r, application, "rm", markupProcessor);
 363         }
 364         aap->unlock();
 365     }
 366     provs.reset();
 367
 368     // Maybe export the first assertion.
 369     ap_table_unset(r->headers_in,"Shib-Attributes");
 370     pair<bool,bool> exp=settings.first->getBool("exportAssertion");
 371     if (!exp.first || !exp.second)
 372         if (dc->bExportAssertion==1)
 373             exp.second=true;
 374     if (exp.second && assertions.size()) {
 375         string assertion;
 376         RM::serialize(*(assertions[0]), assertion);
 377         ap_table_set(r->headers_in,"Shib-Attributes", assertion.c_str());
 378     }
 379
 380     // Export the SAML AuthnMethod and the origin site name, and possibly the NameIdentifier.
 381     ap_table_unset(r->headers_in,"Shib-Origin-Site");
 382     ap_table_unset(r->headers_in,"Shib-Authentication-Method");
 383     ap_table_unset(r->headers_in,"Shib-NameIdentifier-Format");
 384     if (sso_statement) {
 385         auto_ptr_char os(sso_statement->getSubject()->getNameIdentifier()->getNameQualifier());
 386         auto_ptr_char am(sso_statement->getAuthMethod());
 387         ap_table_set(r->headers_in,"Shib-Origin-Site", os.get());
 388         ap_table_set(r->headers_in,"Shib-Authentication-Method", am.get());
 389
 390         // Export NameID?
 391         AAP wrapper(provs,sso_statement->getSubject()->getNameIdentifier()->getFormat(),Constants::SHIB_ATTRIBUTE_NAMESPACE_URI);
 392         if (!wrapper.fail() && wrapper->getHeader()) {
 393             auto_ptr_char form(sso_statement->getSubject()->getNameIdentifier()->getFormat());
 394             auto_ptr_char nameid(sso_statement->getSubject()->getNameIdentifier()->getName());
 395             ap_table_set(r->headers_in,"Shib-NameIdentifier-Format",form.get());
 396             if (!strcmp(wrapper->getHeader(),"REMOTE_USER"))
 397                 SH_AP_USER(r)=ap_pstrdup(r->pool,nameid.get());
 398             else
 399                 ap_table_set(r->headers_in,wrapper->getHeader(),nameid.get());
 400         }
 401     }
 402
 403     ap_table_unset(r->headers_in,"Shib-Application-ID");
 404     ap_table_set(r->headers_in,"Shib-Application-ID",application_id.second);
 405
 406     // Export the attributes.
 407     Iterator<SAMLAssertion*> a_iter(assertions);
 408     while (a_iter.hasNext()) {
 409         SAMLAssertion* assert=a_iter.next();
 410         Iterator<SAMLStatement*> statements=assert->getStatements();
 411         while (statements.hasNext()) {
 412             SAMLAttributeStatement* astate=dynamic_cast<SAMLAttributeStatement*>(statements.next());
 413             if (!astate)
 414                 continue;
 415             Iterator<SAMLAttribute*> attrs=astate->getAttributes();
 416             while (attrs.hasNext()) {
 417                 SAMLAttribute* attr=attrs.next();
 418
 419                 // Are we supposed to export it?
 420                 AAP wrapper(provs,attr->getName(),attr->getNamespace());
 421                 if (wrapper.fail() || !wrapper->getHeader())
 422                     continue;
 423
 424                 Iterator<string> vals=attr->getSingleByteValues();
 425                 if (!strcmp(wrapper->getHeader(),"REMOTE_USER") && vals.hasNext())
 426                     SH_AP_USER(r)=ap_pstrdup(r->pool,vals.next().c_str());
 427                 else {
 428                     int it=0;
 429                     char* header = (char*)ap_table_get(r->headers_in, wrapper->getHeader());
 430                     if (header) {
 431                         header=ap_pstrdup(r->pool, header);
 432                         it++;
 433                     }
 434                     else
 435                         header = ap_pstrdup(r->pool, "");
 436                     for (; vals.hasNext(); it++) {
 437                         string value = vals.next();
 438                         for (string::size_type pos = value.find_first_of(";", string::size_type(0));
 439                                 pos != string::npos;
 440                                 pos = value.find_first_of(";", pos)) {
 441                             value.insert(pos, "\\");
 442                             pos += 2;
 443                         }
 444                         header=ap_pstrcat(r->pool, header, (it ? ";" : ""), value.c_str(), NULL);
 445                     }
 446                     ap_table_setn(r->headers_in, wrapper->getHeader(), header);
 447                }
 448             }
 449         }
 450     }
 451
 452     // clean up memory
 453     for (int k = 0; k < assertions.size(); k++)
 454         delete assertions[k];
 455     delete sso_statement;
 456
 457     return OK;
 458 }
 459
 460 extern "C" int shib_post_handler(request_rec* r)
 461 {
 462   ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 463                 "shib_post_handler(%d): ENTER", (int)getpid());
 464
 465 #ifndef SHIB_APACHE_13
 466     // With 2.x, this handler always runs, though last.
 467     // We check if shib_check_user ran, because it will detect a SHIRE request
 468     // and dispatch it directly.
 469     void* data;
 470     apr_pool_userdata_get(&data,g_UserDataKey,r->pool);
 471     if (data==(const void*)42) {
 472         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_post_handler skipped since check_user ran");
 473         return DECLINED;
 474     }
 475 #endif
 476
 477     ostringstream threadid;
 478     threadid << "[" << getpid() << "] shib_post_handler" << '\0';
 479     saml::NDC ndc(threadid.str().c_str());
 480
 481     // We lock the configuration system for the duration.
 482     IConfig* conf=g_Config->getINI();
 483     Locker locker(conf);
 484
 485     // Map request to application and content settings.
 486     IRequestMapper* mapper=conf->getRequestMapper();
 487     Locker locker2(mapper);
 488     IRequestMapper::Settings settings=mapper->getSettingsFromParsedURL(
 489         ap_http_method(r), ap_get_server_name(r), ap_get_server_port(r), r->unparsed_uri
 490         );
 491     pair<bool,const char*> application_id=settings.first->getString("applicationId");
 492     const IApplication* application=conf->getApplication(application_id.second);
 493     if (!application) {
 494         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 495            "shib_post_handler: unable to map request to application settings, check configuration");
 496         return SERVER_ERROR;
 497     }
 498
 499     // Declare SHIRE object for this request.
 500     SHIRE shire(application);
 501
 502     return shib_handler(r, application, shire);
 503 }
 504
 505 int shib_handler(request_rec* r, const IApplication* application, SHIRE& shire)
 506 {
 507     // Prime the pump...
 508     const char* targeturl = ap_construct_url(r->pool,r->unparsed_uri,r);
 509
 510     // Make sure we only process the SHIRE requests.
 511     if (!strstr(targeturl,shire.getShireURL(targeturl)))
 512         return DECLINED;
 513
 514     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_handler() running");
 515
 516     const IPropertySet* sessionProps=application->getPropertySet("Sessions");
 517     if (!sessionProps) {
 518         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 519            "shib_post_handler: unable to map request to application session settings, check configuration");
 520         return SERVER_ERROR;
 521     }
 522
 523     pair<const char*,const char*> shib_cookie=shire.getCookieNameProps();   // always returns something
 524
 525     ShibMLP markupProcessor;
 526     markupProcessor.insert("requestURL", targeturl);
 527
 528     // Process SHIRE request
 529     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_handler() Beginning SHIRE processing");
 530
 531     try {
 532         pair<bool,bool> shireSSL=sessionProps->getBool("shireSSL");
 533
 534         // Make sure this is SSL, if it should be
 535         if ((!shireSSL.first || shireSSL.second) && strcmp(ap_http_method(r),"https"))
 536             throw ShibTargetException(SHIBRPC_OK, "blocked non-SSL access to session creation service");
 537
 538         // If this is a GET, we manufacture an AuthnRequest.
 539         if (!strcasecmp(r->method,"GET")) {
 540             const char* areq=r->args ? shire.getLazyAuthnRequest(r->args) : NULL;
 541             if (!areq)
 542                 throw ShibTargetException(SHIBRPC_OK, "malformed arguments to request a new session");
 543             ap_table_setn(r->headers_out, "Location", ap_pstrdup(r->pool,areq));
 544             return REDIRECT;
 545         }
 546         else if (strcasecmp(r->method,"POST")) {
 547             throw ShibTargetException(SHIBRPC_OK, "blocked non-POST to SHIRE POST processor");
 548         }
 549
 550         // Sure sure this POST is an appropriate content type
 551         const char *ct = ap_table_get(r->headers_in, "Content-type");
 552         if (!ct || strcasecmp(ct, "application/x-www-form-urlencoded"))
 553             throw ShibTargetException(SHIBRPC_OK,
 554                                       ap_psprintf(r->pool, "blocked bad content-type to SHIRE POST processor: %s", (ct ? ct : "")));
 555
 556         // Read the posted data
 557         if (ap_setup_client_block(r, REQUEST_CHUNKED_ERROR))
 558             throw ShibTargetException(SHIBRPC_OK, "CGI setup_client_block failed");
 559         if (!ap_should_client_block(r))
 560             throw ShibTargetException(SHIBRPC_OK, "CGI should_client_block failed");
 561         if (r->remaining > 1024*1024)
 562             throw ShibTargetException (SHIBRPC_OK, "CGI length too long...");
 563
 564         string cgistr;
 565         char buff[HUGE_STRING_LEN];
 566         ap_hard_timeout("[mod_shib] CGI Parser", r);
 567         memset(buff, 0, sizeof(buff));
 568         while (ap_get_client_block(r, buff, sizeof(buff)-1) > 0) {
 569             cgistr += buff;
 570             memset(buff, 0, sizeof(buff));
 571         }
 572         ap_kill_timeout(r);
 573
 574         // Parse the submission.
 575         pair<const char*,const char*> elements=shire.getFormSubmission(cgistr.c_str(),cgistr.length());
 576
 577         // Make sure the SAML Response parameter exists
 578         if (!elements.first || !*elements.first)
 579             throw ShibTargetException(SHIBRPC_OK, "SHIRE POST failed to find SAMLResponse form element");
 580
 581         // Make sure the target parameter exists
 582         if (!elements.second || !*elements.second)
 583             throw ShibTargetException(SHIBRPC_OK, "SHIRE POST failed to find TARGET form element");
 584
 585         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 586             "shib_handler() Processing POST for target: %s", elements.second);
 587
 588         // process the post
 589         string cookie;
 590         RPCError* status = shire.sessionCreate(elements.first, r->connection->remote_ip, cookie);
 591
 592         if (status->isError()) {
 593             ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 594                     "shib_handler() POST process failed (%d): %s", status->getCode(), status->getText());
 595
 596             if (status->isRetryable()) {
 597                 delete status;
 598                 ap_log_rerror(APLOG_MARK,APLOG_INFO|APLOG_NOERRNO,SH_AP_R(r),
 599                         "shib_handler() retryable error, generating new AuthnRequest");
 600                 ap_table_setn(r->headers_out,"Location",ap_pstrdup(r->pool,shire.getAuthnRequest(elements.second)));
 601                 return REDIRECT;
 602             }
 603
 604             // return this error to the user.
 605             markupProcessor.insert(*status);
 606             delete status;
 607             return shib_error_page(r, application, "shire", markupProcessor);
 608         }
 609         delete status;
 610
 611         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 612                   "shib_handler() POST process succeeded.  New session: %s", cookie.c_str());
 613
 614         // We've got a good session, set the cookie...
 615         char* val = ap_psprintf(r->pool,"%s=%s%s",shib_cookie.first,cookie.c_str(),shib_cookie.second);
 616         ap_table_setn(r->err_headers_out, "Set-Cookie", val);
 617         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_handler() setting cookie: %s", val);
 618
 619         // ... and redirect to the target
 620         ap_table_setn(r->headers_out, "Location", ap_pstrdup(r->pool,elements.second));
 621         return REDIRECT;
 622     }
 623     catch (ShibTargetException &e) {
 624         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_handler() caught exception: %s", e.what());
 625         markupProcessor.insert("errorType", "Session Creation Service Error");
 626         markupProcessor.insert("errorText", e.what());
 627         markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 628         return shib_error_page(r, application, "shire", markupProcessor);
 629     }
 630 #ifndef _DEBUG
 631     catch (...) {
 632         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_handler(): unexpected exception");
 633         markupProcessor.insert("errorType", "Session Creation Service Error");
 634         markupProcessor.insert("errorText", "Unknown Exception");
 635         markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 636         return shib_error_page(r, application, "shire", markupProcessor);
 637     }
 638 #endif
 639
 640     ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),"shib_handler() server error");
 641     return SERVER_ERROR;
 642 }
 643
 644 static SH_AP_TABLE* groups_for_user(request_rec* r, const char* user, char* grpfile)
 645 {
 646     SH_AP_CONFIGFILE* f;
 647     SH_AP_TABLE* grps=ap_make_table(r->pool,15);
 648     char l[MAX_STRING_LEN];
 649     const char *group_name, *ll, *w;
 650
 651 #ifdef SHIB_APACHE_13
 652     if (!(f=ap_pcfg_openfile(r->pool,grpfile))) {
 653 #else
 654     if (ap_pcfg_openfile(&f,r->pool,grpfile) != APR_SUCCESS) {
 655 #endif
 656         ap_log_rerror(APLOG_MARK,APLOG_DEBUG,SH_AP_R(r),"groups_for_user() could not open group file: %s\n",grpfile);
 657         return NULL;
 658     }
 659
 660     SH_AP_POOL* sp;
 661 #ifdef SHIB_APACHE_13
 662     sp=ap_make_sub_pool(r->pool);
 663 #else
 664     if (apr_pool_create(&sp,r->pool) != APR_SUCCESS) {
 665         ap_log_rerror(APLOG_MARK,APLOG_ERR,0,r,
 666             "groups_for_user() could not create a subpool");
 667         return NULL;
 668     }
 669 #endif
 670
 671     while (!(ap_cfg_getline(l,MAX_STRING_LEN,f))) {
 672         if ((*l=='#') || (!*l))
 673             continue;
 674         ll = l;
 675         ap_clear_pool(sp);
 676
 677         group_name=ap_getword(sp,&ll,':');
 678
 679         while (*ll) {
 680             w=ap_getword_conf(sp,&ll);
 681             if (!strcmp(w,user)) {
 682                 ap_table_setn(grps,ap_pstrdup(r->pool,group_name),"in");
 683                 break;
 684             }
 685         }
 686     }
 687     ap_cfg_closefile(f);
 688     ap_destroy_pool(sp);
 689     return grps;
 690 }
 691
 692 /*
 693  * shib_auth_checker() -- a simple resource manager to
 694  * process the .htaccess settings and copy attributes
 695  * into the HTTP headers.
 696  */
 697 extern "C" int shib_auth_checker(request_rec* r)
 698 {
 699     shib_dir_config* dc=
 700         (shib_dir_config*)ap_get_module_config(r->per_dir_config,&mod_shib);
 701
 702     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() executing");
 703
 704     // Regular access to arbitrary resource...check AuthType
 705     const char* auth_type=ap_auth_type(r);
 706     if (!auth_type || strcasecmp(auth_type,"shibboleth"))
 707         return DECLINED;
 708
 709     ostringstream threadid;
 710     threadid << "[" << getpid() << "] shibrm" << '\0';
 711     saml::NDC ndc(threadid.str().c_str());
 712
 713     // We lock the configuration system for the duration.
 714     IConfig* conf=g_Config->getINI();
 715     Locker locker(conf);
 716
 717     const char* application_id=ap_table_get(r->headers_in,"Shib-Application-ID");
 718     const IApplication* application=NULL;
 719     if (application_id)
 720         application = conf->getApplication(application_id);
 721
 722     // mod_auth clone
 723
 724     int m=r->method_number;
 725     bool method_restricted=false;
 726     const char *t, *w;
 727
 728     const array_header* reqs_arr=ap_requires(r);
 729     if (!reqs_arr)
 730         return OK;
 731
 732     require_line* reqs=(require_line*)reqs_arr->elts;
 733
 734     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"REQUIRE nelts: %d", reqs_arr->nelts);
 735     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"REQUIRE all: %d", dc->bRequireAll);
 736
 737     vector<bool> auth_OK(reqs_arr->nelts,false);
 738
 739 #define SHIB_AP_CHECK_IS_OK {       \
 740      if (dc->bRequireAll < 1)    \
 741          return OK;      \
 742      auth_OK[x] = true;      \
 743      continue;           \
 744 }
 745
 746     for (int x=0; x<reqs_arr->nelts; x++) {
 747         auth_OK[x] = false;
 748         if (!(reqs[x].method_mask & (1 << m)))
 749             continue;
 750         method_restricted=true;
 751
 752         t = reqs[x].requirement;
 753         w = ap_getword_white(r->pool, &t);
 754
 755         if (!strcasecmp(w,"Shibboleth")) {
 756             // This is a dummy rule needed because Apache conflates authn and authz.
 757             // Without some require rule, AuthType is ignored and no check_user hooks run.
 758             SHIB_AP_CHECK_IS_OK;
 759         }
 760         else if (!strcmp(w,"valid-user") && application_id) {
 761             ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() accepting valid-user");
 762             SHIB_AP_CHECK_IS_OK;
 763         }
 764         else if (!strcmp(w,"user") && SH_AP_USER(r)) {
 765             bool regexp=false;
 766             while (*t) {
 767                 w=ap_getword_conf(r->pool,&t);
 768                 if (*w=='~') {
 769                     regexp=true;
 770                     continue;
 771                 }
 772
 773                 if (regexp) {
 774                     try {
 775                         // To do regex matching, we have to convert from UTF-8.
 776                         auto_ptr<XMLCh> trans(fromUTF8(w));
 777                         RegularExpression re(trans.get());
 778                         auto_ptr<XMLCh> trans2(fromUTF8(SH_AP_USER(r)));
 779                         if (re.matches(trans2.get())) {
 780                             ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() accepting user: %s",w);
 781                             SHIB_AP_CHECK_IS_OK;
 782                         }
 783                     }
 784                     catch (XMLException& ex) {
 785                         auto_ptr_char tmp(ex.getMessage());
 786                         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 787                                         "shib_auth_checker caught exception while parsing regular expression (%s): %s",w,tmp.get());
 788                     }
 789                 }
 790                 else if (!strcmp(SH_AP_USER(r),w)) {
 791                     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() accepting user: %s",w);
 792                     SHIB_AP_CHECK_IS_OK;
 793                 }
 794             }
 795         }
 796         else if (!strcmp(w,"group")) {
 797             SH_AP_TABLE* grpstatus=NULL;
 798             if (dc->szAuthGrpFile && SH_AP_USER(r)) {
 799                 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() using groups file: %s\n",dc->szAuthGrpFile);
 800                 grpstatus=groups_for_user(r,SH_AP_USER(r),dc->szAuthGrpFile);
 801             }
 802             if (!grpstatus)
 803                 return DECLINED;
 804
 805             while (*t) {
 806                 w=ap_getword_conf(r->pool,&t);
 807                 if (ap_table_get(grpstatus,w)) {
 808                     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() accepting group: %s",w);
 809                     SHIB_AP_CHECK_IS_OK;
 810                 }
 811             }
 812         }
 813         else {
 814             Iterator<IAAP*> provs=application ? application->getAAPProviders() : EMPTY(IAAP*);
 815             AAP wrapper(provs,w);
 816             if (wrapper.fail()) {
 817                 ap_log_rerror(APLOG_MARK,APLOG_WARNING|APLOG_NOERRNO,SH_AP_R(r),
 818                     "shib_auth_checker() didn't recognize require rule: %s\n",w);
 819                 continue;
 820             }
 821
 822             bool regexp=false;
 823             const char* vals=ap_table_get(r->headers_in,wrapper->getHeader());
 824             while (*t && vals) {
 825                 w=ap_getword_conf(r->pool,&t);
 826                 if (*w=='~') {
 827                     regexp=true;
 828                     continue;
 829                 }
 830
 831                 try {
 832                     auto_ptr<RegularExpression> re;
 833                     if (regexp) {
 834                         delete re.release();
 835                         auto_ptr<XMLCh> trans(fromUTF8(w));
 836                         auto_ptr<RegularExpression> temp(new RegularExpression(trans.get()));
 837                         re=temp;
 838                     }
 839
 840                     string vals_str(vals);
 841                     int j = 0;
 842                     for (int i = 0;  i < vals_str.length();  i++) {
 843                         if (vals_str.at(i) == ';') {
 844                             if (i == 0) {
 845                                 ap_log_rerror(APLOG_MARK,APLOG_WARNING|APLOG_NOERRNO,SH_AP_R(r),
 846                                                 "shib_auth_checker() invalid header encoding %s: starts with semicolon", vals);
 847                                 return SERVER_ERROR;
 848                             }
 849
 850                             if (vals_str.at(i-1) == '\\') {
 851                                 vals_str.erase(i-1, 1);
 852                                 i--;
 853                                 continue;
 854                             }
 855
 856                             string val = vals_str.substr(j, i-j);
 857                             j = i+1;
 858                             if (regexp) {
 859                                 auto_ptr<XMLCh> trans(fromUTF8(val.c_str()));
 860                                 if (re->matches(trans.get())) {
 861                                     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 862                                                     "shib_auth_checker() expecting %s, got %s: authorization granted", w, val.c_str());
 863                                     SHIB_AP_CHECK_IS_OK;
 864                                 }
 865                             }
 866                             else if (val==w) {
 867                                 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 868                                                 "shib_auth_checker() expecting %s, got %s: authorization granted", w, val.c_str());
 869                                 SHIB_AP_CHECK_IS_OK;
 870                             }
 871                             else {
 872                                 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 873                                                 "shib_auth_checker() expecting %s, got %s: authorization not granted", w, val.c_str());
 874                             }
 875                         }
 876                     }
 877
 878                     string val = vals_str.substr(j, vals_str.length()-j);
 879                     if (regexp) {
 880                         auto_ptr<XMLCh> trans(fromUTF8(val.c_str()));
 881                         if (re->matches(trans.get())) {
 882                             ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 883                                             "shib_auth_checker() expecting %s, got %s: authorization granted", w, val.c_str());
 884                             SHIB_AP_CHECK_IS_OK;
 885                         }
 886                     }
 887                     else if (val==w) {
 888                         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 889                                         "shib_auth_checker() expecting %s, got %s: authorization granted", w, val.c_str());
 890                         SHIB_AP_CHECK_IS_OK;
 891                     }
 892                     else {
 893                         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 894                                         "shib_auth_checker() expecting %s, got %s: authorization not granted", w, val.c_str());
 895                     }
 896                 }
 897                 catch (XMLException& ex) {
 898                     auto_ptr_char tmp(ex.getMessage());
 899                     ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 900                                     "shib_auth_checker caught exception while parsing regular expression (%s): %s",w,tmp.get());
 901                 }
 902             }
 903         }
 904     }
 905
 906     // check if all require directives are true
 907     bool auth_all_OK = true;
 908     for (int i= 0; i<reqs_arr->nelts; i++) {
 909         auth_all_OK &= auth_OK[i];
 910     }
 911     if (auth_all_OK)
 912         return OK;
 913
 914     if (!method_restricted)
 915         return OK;
 916
 917     if (!application_id) {
 918         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 919            "shib_auth_checker: Shib-Application-ID header not found in request");
 920         return HTTP_FORBIDDEN;
 921     }
 922     else if (!application) {
 923         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 924            "shib_auth_checker: unable to map request to application settings, check configuration");
 925         return HTTP_FORBIDDEN;
 926     }
 927
 928     ShibMLP markupProcessor;
 929     markupProcessor.insert("requestURL", ap_construct_url(r->pool,r->unparsed_uri,r));
 930     return shib_error_page(r, application, "access", markupProcessor);
 931 }
 932
 933 /*
 934  * shib_exit()
 935  *  Cleanup the (per-process) pool info.
 936  */
 937 #ifdef SHIB_APACHE_13
 938 extern "C" void shib_exit(server_rec* s, SH_AP_POOL* p)
 939 {
 940 #else
 941 extern "C" apr_status_t shib_exit(void* data)
 942 {
 943     server_rec* s = NULL;
 944 #endif
 945
 946     ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_exit(%d) dealing with g_Config..", (int)getpid());
 947
 948     g_Config->shutdown();
 949     g_Config = NULL;
 950
 951     ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_exit() done\n");
 952 #ifndef SHIB_APACHE_13
 953     return OK;
 954 #endif
 955 }
 956
 957
 958 #ifdef SHIB_APACHE_13
 959 extern "C" void shib_child_exit(server_rec* s, SH_AP_POOL* p)
 960 #else
 961 extern "C" apr_status_t shib_child_exit(void* data)
 962 #endif
 963 {
 964   server_rec* s = NULL;
 965
 966   ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_child_exit(%d)",
 967                (int)getpid());
 968
 969 #ifndef SHIB_APACHE_13
 970     return OK;
 971 #endif
 972 }
 973
 974 /*
 975  * shire_child_init()
 976  *  Things to do when the child process is initialized.
 977  *  (or after the configs are read in apache-2)
 978  */
 979 #ifdef SHIB_APACHE_13
 980 extern "C" void shib_child_init(server_rec* s, SH_AP_POOL* p)
 981 #else
 982 extern "C" int shib_post_config(apr_pool_t* pconf, apr_pool_t* plog,
 983                                 apr_pool_t* ptemp, server_rec* s)
 984 #endif
 985 {
 986     // Initialize runtime components.
 987
 988     ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init(%d) starting", (int)getpid());
 989
 990     if (g_Config) {
 991         ap_log_error(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() already initialized!");
 992 #ifdef SHIB_APACHE_13
 993         exit(1);
 994 #else
 995         return OK;
 996 #endif
 997     }
 998
 999     try {
1000         g_Config=&ShibTargetConfig::getConfig();
1001         g_Config->setFeatures(
1002             ShibTargetConfig::Listener |
1003             ShibTargetConfig::Metadata |
1004             ShibTargetConfig::AAP |
1005             ShibTargetConfig::RequestMapper |
1006             ShibTargetConfig::SHIREExtensions
1007             );
1008         if (!g_Config->init(g_szSchemaDir,g_szSHIBConfig)) {
1009             ap_log_error(APLOG_MARK,APLOG_CRIT|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() failed to initialize SHIB Target");
1010             exit(1);
1011         }
1012     }
1013     catch (...) {
1014         ap_log_error(APLOG_MARK,APLOG_CRIT|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() failed to initialize SHIB Target");
1015         exit (1);
1016     }
1017
1018     // Set the cleanup handler
1019     apr_pool_cleanup_register(pconf, NULL, &shib_exit, &shib_child_exit);
1020
1021     ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() done");
1022
1023 #ifndef SHIB_APACHE_13
1024     return OK;
1025 #endif
1026 }
1027
1028 #ifdef SHIB_APACHE_13
1029
1030 // SHIB Module commands
1031
1032 static command_rec shire_cmds[] = {
1033   {"SHIREConfig", (config_fn_t)ap_set_global_string_slot, &g_szSHIBConfig,
1034    RSRC_CONF, TAKE1, "Path to shibboleth.xml config file."},
1035   {"ShibConfig", (config_fn_t)ap_set_global_string_slot, &g_szSHIBConfig,
1036    RSRC_CONF, TAKE1, "Path to shibboleth.xml config file."},
1037   {"ShibSchemaDir", (config_fn_t)ap_set_global_string_slot, &g_szSchemaDir,
1038    RSRC_CONF, TAKE1, "Path to Shibboleth XML schema directory."},
1039
1040   {"ShibBasicHijack", (config_fn_t)ap_set_flag_slot,
1041    (void *) XtOffsetOf (shib_dir_config, bBasicHijack),
1042    OR_AUTHCFG, FLAG, "Respond to AuthType Basic and convert to shib?"},
1043   {"ShibRequireSession", (config_fn_t)ap_set_flag_slot,
1044    (void *) XtOffsetOf (shib_dir_config, bRequireSession),
1045    OR_AUTHCFG, FLAG, "Initiates a new session if one does not exist."},
1046   {"ShibExportAssertion", (config_fn_t)ap_set_flag_slot,
1047    (void *) XtOffsetOf (shib_dir_config, bExportAssertion),
1048    OR_AUTHCFG, FLAG, "Export SAML assertion to Shibboleth-defined header?"},
1049   {"AuthGroupFile", (config_fn_t)ap_set_file_slot,
1050    (void *) XtOffsetOf (shib_dir_config, szAuthGrpFile),
1051    OR_AUTHCFG, TAKE1, "text file containing group names and member user IDs"},
1052   {"ShibRequireAll", (config_fn_t)ap_set_flag_slot,
1053    (void *) XtOffsetOf (shib_dir_config, bRequireAll),
1054    OR_AUTHCFG, FLAG, "All require directives must match!"},
1055
1056   {NULL}
1057 };
1058
1059 extern "C"{
1060 handler_rec shib_handlers[] = {
1061   { "shib-shire-post", shib_post_handler },
1062   { NULL }
1063 };
1064
1065 module MODULE_VAR_EXPORT mod_shib = {
1066     STANDARD_MODULE_STUFF,
1067     NULL,                        /* initializer */
1068     create_shib_dir_config,     /* dir config creater */
1069     merge_shib_dir_config,      /* dir merger --- default is to override */
1070     NULL,                       /* server config */
1071     NULL,                       /* merge server config */
1072     shire_cmds,                 /* command table */
1073     shib_handlers,              /* handlers */
1074     NULL,                       /* filename translation */
1075     shib_check_user,            /* check_user_id */
1076     shib_auth_checker,          /* check auth */
1077     NULL,                       /* check access */
1078     NULL,                       /* type_checker */
1079     NULL,                       /* fixups */
1080     NULL,                       /* logger */
1081     NULL,                       /* header parser */
1082     shib_child_init,            /* child_init */
1083     shib_exit,                  /* child_exit */
1084     NULL                        /* post read-request */
1085 };
1086
1087 #elif defined(SHIB_APACHE_20)
1088
1089 extern "C" void shib_register_hooks (apr_pool_t *p)
1090 {
1091   ap_hook_post_config(shib_post_config, NULL, NULL, APR_HOOK_MIDDLE);
1092   ap_hook_check_user_id(shib_check_user, NULL, NULL, APR_HOOK_MIDDLE);
1093   ap_hook_auth_checker(shib_auth_checker, NULL, NULL, APR_HOOK_FIRST);
1094   ap_hook_handler(shib_post_handler, NULL, NULL, APR_HOOK_LAST);
1095 }
1096
1097 // SHIB Module commands
1098
1099 extern "C" {
1100 static command_rec shib_cmds[] = {
1101   AP_INIT_TAKE1("ShibConfig",
1102                 (config_fn_t)ap_set_global_string_slot, &g_szSHIBConfig,
1103                 RSRC_CONF, "Path to shibboleth.xml config file."),
1104   AP_INIT_TAKE1("ShibSchemaDir",
1105      (config_fn_t)ap_set_global_string_slot, &g_szSchemaDir,
1106       RSRC_CONF, "Path to Shibboleth XML schema directory."),
1107
1108   AP_INIT_FLAG("ShibBasicHijack", (config_fn_t)ap_set_flag_slot,
1109                (void *) offsetof (shib_dir_config, bBasicHijack),
1110                OR_AUTHCFG, "Respond to AuthType Basic and convert to shib?"),
1111   AP_INIT_FLAG("ShibRequireSession", (config_fn_t)ap_set_flag_slot,
1112          (void *) offsetof (shib_dir_config, bRequireSession),
1113         OR_AUTHCFG, "Initiates a new session if one does not exist."),
1114   AP_INIT_FLAG("ShibExportAssertion", (config_fn_t)ap_set_flag_slot,
1115          (void *) offsetof (shib_dir_config, bExportAssertion),
1116         OR_AUTHCFG, "Export SAML assertion to Shibboleth-defined header?"),
1117   AP_INIT_TAKE1("AuthGroupFile", (config_fn_t)ap_set_file_slot,
1118                 (void *) offsetof (shib_dir_config, szAuthGrpFile),
1119                 OR_AUTHCFG, "text file containing group names and member user IDs"),
1120   AP_INIT_FLAG("ShibRequireAll", (config_fn_t)ap_set_flag_slot,
1121                (void *) offsetof (shib_dir_config, bRequireAll),
1122                OR_AUTHCFG, "All require directives must match!"),
1123
1124   {NULL}
1125 };
1126
1127 module AP_MODULE_DECLARE_DATA mod_shib = {
1128     STANDARD20_MODULE_STUFF,
1129     create_shib_dir_config,     /* create dir config */
1130     merge_shib_dir_config,      /* merge dir config --- default is to override */
1131     NULL,                       /* create server config */
1132     NULL,                       /* merge server config */
1133     shib_cmds,                  /* command table */
1134     shib_register_hooks         /* register hooks */
1135 };
1136
1137 #else
1138 #error "undefined APACHE version"
1139 #endif
1140
1141 }