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     bool g_bApacheConf = false;
  53     static const char* g_UserDataKey = "_shib_check_user_";
  54 }
  55
  56 // per-dir module configuration structure
  57 struct shib_dir_config
  58 {
  59     // RM Configuration
  60     char* szAuthGrpFile;    // Auth GroupFile name
  61     int bRequireAll;        // all require directives must match, otherwise OR logic
  62
  63     // SHIRE Configuration
  64     int bBasicHijack;       // activate for AuthType Basic?
  65     int bRequireSession;    // require a session?
  66     int bExportAssertion;   // export SAML assertion to the environment?
  67 };
  68
  69 // creates per-directory config structure
  70 extern "C" void* create_shib_dir_config (SH_AP_POOL* p, char* d)
  71 {
  72     shib_dir_config* dc=(shib_dir_config*)ap_pcalloc(p,sizeof(shib_dir_config));
  73     dc->bBasicHijack = -1;
  74     dc->bRequireSession = -1;
  75     dc->bExportAssertion = -1;
  76     dc->bRequireAll = -1;
  77     dc->szAuthGrpFile = NULL;
  78     return dc;
  79 }
  80
  81 // overrides server configuration in directories
  82 extern "C" void* merge_shib_dir_config (SH_AP_POOL* p, void* base, void* sub)
  83 {
  84     shib_dir_config* dc=(shib_dir_config*)ap_pcalloc(p,sizeof(shib_dir_config));
  85     shib_dir_config* parent=(shib_dir_config*)base;
  86     shib_dir_config* child=(shib_dir_config*)sub;
  87
  88     if (child->szAuthGrpFile)
  89         dc->szAuthGrpFile=ap_pstrdup(p,child->szAuthGrpFile);
  90     else if (parent->szAuthGrpFile)
  91         dc->szAuthGrpFile=ap_pstrdup(p,parent->szAuthGrpFile);
  92     else
  93         dc->szAuthGrpFile=NULL;
  94
  95     dc->bBasicHijack=((child->bBasicHijack==-1) ? parent->bBasicHijack : child->bBasicHijack);
  96     dc->bRequireSession=((child->bRequireSession==-1) ? parent->bRequireSession : child->bRequireSession);
  97     dc->bExportAssertion=((child->bExportAssertion==-1) ? parent->bExportAssertion : child->bExportAssertion);
  98     dc->bRequireAll=((child->bRequireAll==-1) ? parent->bRequireAll : child->bRequireAll);
  99     return dc;
 100 }
 101
 102 // generic global slot handlers
 103 extern "C" const char* ap_set_global_string_slot(cmd_parms* parms, void*, const char* arg)
 104 {
 105     *((char**)(parms->info))=ap_pstrdup(parms->pool,arg);
 106     return NULL;
 107 }
 108
 109 typedef const char* (*config_fn_t)(void);
 110
 111 static int shib_error_page(request_rec* r, const IApplication* app, const char* page, ShibMLP& mlp)
 112 {
 113     const IPropertySet* props=app->getPropertySet("Errors");
 114     if (props) {
 115         pair<bool,const char*> p=props->getString(page);
 116         if (p.first) {
 117             ifstream infile(p.second);
 118             if (!infile.fail()) {
 119                 const char* res = mlp.run(infile);
 120                 if (res) {
 121                     r->content_type = ap_psprintf(r->pool, "text/html");
 122                     ap_send_http_header(r);
 123                     ap_rprintf(r, res);
 124                     return DONE;
 125                 }
 126             }
 127         }
 128     }
 129
 130     ap_log_rerror(APLOG_MARK,APLOG_ERR,SH_AP_R(r),
 131         "shib_error_page() could not process shire error template for application %s",app->getId());
 132     return SERVER_ERROR;
 133 }
 134
 135 extern "C" int shib_check_user(request_rec* r)
 136 {
 137     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user: ENTER");
 138     shib_dir_config* dc=(shib_dir_config*)ap_get_module_config(r->per_dir_config,&mod_shib);
 139
 140     ostringstream threadid;
 141     threadid << "[" << getpid() << "] shib_check_user" << '\0';
 142     saml::NDC ndc(threadid.str().c_str());
 143
 144     // This will always be normalized, because Apache uses ap_get_server_name in this API call.
 145     const char* targeturl=ap_construct_url(r->pool,r->unparsed_uri,r);
 146
 147     // We lock the configuration system for the duration.
 148     IConfig* conf=g_Config->getINI();
 149     Locker locker(conf);
 150
 151     // Map request to application and content settings.
 152     IRequestMapper* mapper=conf->getRequestMapper();
 153     Locker locker2(mapper);
 154     IRequestMapper::Settings settings=mapper->getSettingsFromParsedURL(
 155         ap_http_method(r), ap_get_server_name(r), ap_get_server_port(r), r->unparsed_uri
 156         );
 157     pair<bool,const char*> application_id=settings.first->getString("applicationId");
 158     const IApplication* application=conf->getApplication(application_id.second);
 159     const IPropertySet* sessionProps=application ? application->getPropertySet("Sessions") : NULL;
 160     if (!application || !sessionProps) {
 161         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 162            "shib_check_user: unable to map request to application session settings, check configuration");
 163         return SERVER_ERROR;
 164     }
 165
 166     // Declare SHIRE object for this request.
 167     SHIRE shire(application);
 168
 169     // Get location of this application's assertion consumer service and see if this is it.
 170     if (strstr(targeturl,shire.getShireURL(targeturl))) {
 171         return shib_handler(r,application,sessionProps,shire);
 172     }
 173
 174     // We can short circuit the handler if we run this...
 175     apr_pool_userdata_setn((const void*)42,g_UserDataKey,NULL,r->pool);
 176
 177     // Regular access to arbitrary resource...check AuthType
 178     const char *auth_type=ap_auth_type(r);
 179     if (!auth_type)
 180         return DECLINED;
 181
 182     if (strcasecmp(auth_type,"shibboleth")) {
 183         if (!strcasecmp(auth_type,"basic") && dc->bBasicHijack==1) {
 184             core_dir_config* conf=
 185                 (core_dir_config*)ap_get_module_config(r->per_dir_config,
 186                     ap_find_linked_module("http_core.c"));
 187             conf->ap_auth_type="shibboleth";
 188         }
 189         else
 190             return DECLINED;
 191     }
 192
 193     pair<bool,bool> requireSession = pair<bool,bool>(false,false);
 194     if (g_bApacheConf) {
 195         // By default, we will require a session.
 196         if (dc->bRequireSession!=0)
 197             requireSession.second=true;
 198     }
 199     else
 200         requireSession = settings.first->getBool("requireSession");
 201
 202     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user: session check for %s",targeturl);
 203
 204     pair<bool,const char*> shib_cookie=sessionProps->getString("cookieName");
 205     if (!shib_cookie.first) {
 206         ap_log_rerror(APLOG_MARK,APLOG_CRIT|APLOG_NOERRNO,SH_AP_R(r),
 207                       "shib_check_user: no cookieName set for %s",
 208                       application_id.second);
 209         return SERVER_ERROR;
 210     }
 211
 212     // We're in charge, so check for cookie.
 213     const char* session_id=NULL;
 214     const char* cookies=ap_table_get(r->headers_in,"Cookie");
 215
 216     if (cookies) {
 217         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user: cookies found: %s",cookies);
 218         if (session_id=strstr(cookies,shib_cookie.second)) {
 219             // Yep, we found a cookie -- pull it out (our session_id)
 220             session_id+=strlen(shib_cookie.second) + 1; /* Skip over the '=' */
 221             char* cookiebuf = ap_pstrdup(r->pool,session_id);
 222             char* cookieend = strchr(cookiebuf,';');
 223             if (cookieend)
 224                 *cookieend = '\0';    /* Ignore anyting after a ; */
 225             session_id=cookiebuf;
 226         }
 227     }
 228
 229     if (!session_id || !*session_id) {
 230         // If no session required, bail now.
 231         if (!requireSession.second)
 232             return OK;
 233
 234         // No acceptable cookie, and we require a session.  Generate an AuthnRequest.
 235         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user: no cookie found -- redirecting to WAYF");
 236         ap_table_setn(r->headers_out,"Location",ap_pstrdup(r->pool,shire.getAuthnRequest(targeturl)));
 237         return REDIRECT;
 238     }
 239
 240     // Make sure this session is still valid.
 241     RPCError* status = NULL;
 242     ShibMLP markupProcessor(application);
 243     markupProcessor.insert("requestURL", targeturl);
 244
 245     try {
 246         status = shire.sessionIsValid(session_id, r->connection->remote_ip);
 247     }
 248     catch (ShibTargetException &e) {
 249         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user(): %s", e.what());
 250         markupProcessor.insert("errorType", "Session Processing Error");
 251         markupProcessor.insert("errorText", e.what());
 252         markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 253         return shib_error_page(r, application, "shire", markupProcessor);
 254     }
 255 #ifndef _DEBUG
 256     catch (...) {
 257         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user(): caught unexpected error");
 258         markupProcessor.insert("errorType", "Session Processing Error");
 259         markupProcessor.insert("errorText", "Unexpected Exception");
 260         markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 261         return shib_error_page(r, application, "shire", markupProcessor);
 262     }
 263 #endif
 264
 265     // Check the status
 266     if (status->isError()) {
 267         ap_log_rerror(APLOG_MARK,APLOG_INFO|APLOG_NOERRNO,SH_AP_R(r),
 268                       "shib_check_user() session invalid: %s", status->getText());
 269
 270         // If no session required, bail now.
 271         if (!requireSession.second)
 272             return DECLINED;    // XXX: Or should this be OK?
 273         else if (status->isRetryable()) {
 274             // Oops, session is invalid. Generate AuthnRequest.
 275             ap_table_setn(r->headers_out,"Location",ap_pstrdup(r->pool,shire.getAuthnRequest(targeturl)));
 276             delete status;
 277             return REDIRECT;
 278         }
 279         else {
 280             // return the error page to the user
 281             markupProcessor.insert(*status);
 282             delete status;
 283             return shib_error_page(r, application, "shire", markupProcessor);
 284         }
 285     }
 286
 287     delete status;
 288     // set the authtype
 289 #ifdef SHIB_APACHE_13
 290     if (r->connection)
 291         r->connection->ap_auth_type = "shibboleth";
 292 #else
 293     r->ap_auth_type = "shibboleth";
 294 #endif
 295     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user: session successfully verified");
 296
 297     // This is code transferred in from the auth check to export the attributes.
 298     // We could even combine the isSessionValid/getAssertions API...?
 299
 300     RM rm(application);
 301     vector<SAMLAssertion*> assertions;
 302     SAMLAuthenticationStatement* sso_statement=NULL;
 303
 304     try {
 305         status = rm.getAssertions(session_id, r->connection->remote_ip, assertions, &sso_statement);
 306     }
 307     catch (ShibTargetException &e) {
 308         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user(): %s", e.what());
 309         markupProcessor.insert("errorType", "Attribute Processing Error");
 310         markupProcessor.insert("errorText", e.what());
 311         markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 312         return shib_error_page(r, application, "rm", markupProcessor);
 313     }
 314 #ifndef _DEBUG
 315     catch (...) {
 316         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user(): caught unexpected error");
 317         markupProcessor.insert("errorType", "Attribute Processing Error");
 318         markupProcessor.insert("errorText", "Unexpected Exception");
 319         markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 320         return shib_error_page(r, application, "rm", markupProcessor);
 321     }
 322 #endif
 323
 324     if (status->isError()) {
 325         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 326             "shib_check_user() getAssertions failed: %s", status->getText());
 327
 328         markupProcessor.insert(*status);
 329         delete status;
 330         return shib_error_page(r, application, "rm", markupProcessor);
 331     }
 332     delete status;
 333
 334     // Do we have an access control plugin?
 335     if (settings.second) {
 336         Locker acllock(settings.second);
 337         if (!settings.second->authorized(assertions)) {
 338             for (int k = 0; k < assertions.size(); k++)
 339                 delete assertions[k];
 340             delete sso_statement;
 341             ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user(): access control provider denied access");
 342             return shib_error_page(r, application, "access", markupProcessor);
 343         }
 344     }
 345
 346     // Get the AAP providers, which contain the attribute policy info.
 347     Iterator<IAAP*> provs=application->getAAPProviders();
 348
 349     // Clear out the list of mapped attributes
 350     while (provs.hasNext()) {
 351         IAAP* aap=provs.next();
 352         aap->lock();
 353         try {
 354             Iterator<const IAttributeRule*> rules=aap->getAttributeRules();
 355             while (rules.hasNext()) {
 356                 const char* header=rules.next()->getHeader();
 357                 if (header)
 358                     ap_table_unset(r->headers_in,header);
 359             }
 360         }
 361         catch(...) {
 362             aap->unlock();
 363             for (int k = 0; k < assertions.size(); k++)
 364                 delete assertions[k];
 365             delete sso_statement;
 366             ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 367                 "shib_check_user(): caught unexpected error while clearing headers");
 368             markupProcessor.insert("errorType", "Attribute Processing Error");
 369             markupProcessor.insert("errorText", "Unexpected Exception");
 370             markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 371             return shib_error_page(r, application, "rm", markupProcessor);
 372         }
 373         aap->unlock();
 374     }
 375     provs.reset();
 376
 377     // Maybe export the first assertion.
 378     ap_table_unset(r->headers_in,"Shib-Attributes");
 379     pair<bool,bool> exp=pair<bool,bool>(false,false);
 380     if (g_bApacheConf && dc->bExportAssertion==1)
 381         exp.second=exp.first=true;
 382     else if (!g_bApacheConf)
 383         exp=settings.first->getBool("exportAssertion");
 384     if (exp.first && exp.second && assertions.size()) {
 385         string assertion;
 386         RM::serialize(*(assertions[0]), assertion);
 387         ap_table_set(r->headers_in,"Shib-Attributes", assertion.c_str());
 388     }
 389
 390     // Export the SAML AuthnMethod and the origin site name.
 391     ap_table_unset(r->headers_in,"Shib-Origin-Site");
 392     ap_table_unset(r->headers_in,"Shib-Authentication-Method");
 393     if (sso_statement) {
 394         auto_ptr_char os(sso_statement->getSubject()->getNameQualifier());
 395         auto_ptr_char am(sso_statement->getAuthMethod());
 396         ap_table_set(r->headers_in,"Shib-Origin-Site", os.get());
 397         ap_table_set(r->headers_in,"Shib-Authentication-Method", am.get());
 398     }
 399
 400     ap_table_unset(r->headers_in,"Shib-Application-ID");
 401     ap_table_set(r->headers_in,"Shib-Application-ID",application_id.second);
 402
 403     // Export the attributes.
 404     Iterator<SAMLAssertion*> a_iter(assertions);
 405     while (a_iter.hasNext()) {
 406         SAMLAssertion* assert=a_iter.next();
 407         Iterator<SAMLStatement*> statements=assert->getStatements();
 408         while (statements.hasNext()) {
 409             SAMLAttributeStatement* astate=dynamic_cast<SAMLAttributeStatement*>(statements.next());
 410             if (!astate)
 411                 continue;
 412             Iterator<SAMLAttribute*> attrs=astate->getAttributes();
 413             while (attrs.hasNext()) {
 414                 SAMLAttribute* attr=attrs.next();
 415
 416                 // Are we supposed to export it?
 417                 AAP wrapper(provs,attr->getName(),attr->getNamespace());
 418                 if (wrapper.fail())
 419                     continue;
 420
 421                 Iterator<string> vals=attr->getSingleByteValues();
 422                 if (!strcmp(wrapper->getHeader(),"REMOTE_USER") && vals.hasNext())
 423                     SH_AP_USER(r)=ap_pstrdup(r->pool,vals.next().c_str());
 424                 else {
 425                     int it=0;
 426                     char* header = (char*)ap_table_get(r->headers_in, wrapper->getHeader());
 427                     if (header) {
 428                         header=ap_pstrdup(r->pool, header);
 429                         it++;
 430                     }
 431                     else
 432                         header = ap_pstrdup(r->pool, "");
 433                     for (; vals.hasNext(); it++) {
 434                         string value = vals.next();
 435                         for (string::size_type pos = value.find_first_of(";", string::size_type(0));
 436                                 pos != string::npos;
 437                                 pos = value.find_first_of(";", pos)) {
 438                             value.insert(pos, "\\");
 439                             pos += 2;
 440                         }
 441                         header=ap_pstrcat(r->pool, header, (it ? ";" : ""), value.c_str(), NULL);
 442                     }
 443                     ap_table_setn(r->headers_in, wrapper->getHeader(), header);
 444                }
 445             }
 446         }
 447     }
 448
 449     // clean up memory
 450     for (int k = 0; k < assertions.size(); k++)
 451         delete assertions[k];
 452     delete sso_statement;
 453
 454     return OK;
 455 }
 456
 457 extern "C" int shib_post_handler(request_rec* r)
 458 {
 459 #ifndef SHIB_APACHE_13
 460     // With 2.x, this handler always runs, though last.
 461     // We check if shib_check_user ran, because it will detect a SHIRE request
 462     // and dispatch it directly.
 463     void* data;
 464     apr_pool_userdata_get(&data,g_UserDataKey,r->pool);
 465     if (data==(const void*)42) {
 466         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_post_handler skipped since check_user ran");
 467         return DECLINED;
 468     }
 469 #endif
 470
 471     ostringstream threadid;
 472     threadid << "[" << getpid() << "] shib_post_handler" << '\0';
 473     saml::NDC ndc(threadid.str().c_str());
 474
 475     // We lock the configuration system for the duration.
 476     IConfig* conf=g_Config->getINI();
 477     Locker locker(conf);
 478
 479     // Map request to application and content settings.
 480     IRequestMapper* mapper=conf->getRequestMapper();
 481     Locker locker2(mapper);
 482     IRequestMapper::Settings settings=mapper->getSettingsFromParsedURL(
 483         ap_http_method(r), ap_get_server_name(r), ap_get_server_port(r), r->unparsed_uri
 484         );
 485     pair<bool,const char*> application_id=settings.first->getString("applicationId");
 486     const IApplication* application=conf->getApplication(application_id.second);
 487     const IPropertySet* sessionProps=application ? application->getPropertySet("Sessions") : NULL;
 488     if (!application || !sessionProps) {
 489         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 490            "shib_post_handler: unable to map request to application session settings, check configuration");
 491         return SERVER_ERROR;
 492     }
 493
 494     // Declare SHIRE object for this request.
 495     SHIRE shire(application);
 496
 497     return shib_handler(r, application, sessionProps, shire);
 498 }
 499
 500 int shib_handler(request_rec* r, const IApplication* application, const IPropertySet* sessionProps, SHIRE& shire)
 501 {
 502     // Prime the pump...
 503     const char* targeturl = ap_construct_url(r->pool,r->unparsed_uri,r);
 504
 505     // Make sure we only process the SHIRE requests.
 506     if (!strstr(targeturl,shire.getShireURL(targeturl)))
 507         return DECLINED;
 508
 509     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_handler() running");
 510
 511     pair<bool,const char*> shib_cookie=sessionProps->getString("cookieName");
 512     pair<bool,const char*> shib_cookie_props=sessionProps->getString("cookieProps");
 513     if (!shib_cookie.first) {
 514         ap_log_rerror(APLOG_MARK,APLOG_CRIT|APLOG_NOERRNO,SH_AP_R(r),
 515             "shib_handler: no cookieName set for %s", application->getId());
 516         return SERVER_ERROR;
 517     }
 518
 519     ShibMLP markupProcessor(application);
 520     markupProcessor.insert("requestURL", targeturl);
 521
 522     // Process SHIRE request
 523     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_handler() Beginning SHIRE processing");
 524
 525     try {
 526         pair<bool,bool> shireSSL=sessionProps->getBool("shireSSL");
 527
 528         // Make sure this is SSL, if it should be
 529         if ((!shireSSL.first || shireSSL.second) && strcmp(ap_http_method(r),"https"))
 530             throw ShibTargetException(SHIBRPC_OK, "blocked non-SSL access to session creation service");
 531
 532         // If this is a GET, we manufacture an AuthnRequest.
 533         if (!strcasecmp(r->method,"GET")) {
 534             const char* areq=r->args ? shire.getLazyAuthnRequest(r->args) : NULL;
 535             if (!areq)
 536                 throw ShibTargetException(SHIBRPC_OK, "malformed arguments to request a new session");
 537             ap_table_setn(r->headers_out, "Location", ap_pstrdup(r->pool,areq));
 538             return REDIRECT;
 539         }
 540         else if (strcasecmp(r->method,"POST")) {
 541             throw ShibTargetException(SHIBRPC_OK, "blocked non-POST to SHIRE POST processor");
 542         }
 543
 544         // Sure sure this POST is an appropriate content type
 545         const char *ct = ap_table_get(r->headers_in, "Content-type");
 546         if (!ct || strcasecmp(ct, "application/x-www-form-urlencoded"))
 547             throw ShibTargetException(SHIBRPC_OK,
 548                                       ap_psprintf(r->pool, "blocked bad content-type to SHIRE POST processor: %s", (ct ? ct : "")));
 549
 550         // Read the posted data
 551         if (ap_setup_client_block(r, REQUEST_CHUNKED_ERROR))
 552             throw ShibTargetException(SHIBRPC_OK, "CGI setup_client_block failed");
 553         if (!ap_should_client_block(r))
 554             throw ShibTargetException(SHIBRPC_OK, "CGI should_client_block failed");
 555         if (r->remaining > 1024*1024)
 556             throw ShibTargetException (SHIBRPC_OK, "CGI length too long...");
 557
 558         string cgistr;
 559         char buff[HUGE_STRING_LEN];
 560         ap_hard_timeout("[mod_shib] CGI Parser", r);
 561         memset(buff, 0, sizeof(buff));
 562         while (ap_get_client_block(r, buff, sizeof(buff)-1) > 0) {
 563             cgistr += buff;
 564             memset(buff, 0, sizeof(buff));
 565         }
 566         ap_kill_timeout(r);
 567
 568         // Parse the submission.
 569         pair<const char*,const char*> elements=shire.getFormSubmission(cgistr.c_str(),cgistr.length());
 570
 571         // Make sure the SAML Response parameter exists
 572         if (!elements.first || !*elements.first)
 573             throw ShibTargetException(SHIBRPC_OK, "SHIRE POST failed to find SAMLResponse form element");
 574
 575         // Make sure the target parameter exists
 576         if (!elements.second || !*elements.second)
 577             throw ShibTargetException(SHIBRPC_OK, "SHIRE POST failed to find TARGET form element");
 578
 579         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 580             "shib_handler() Processing POST for target: %s", elements.second);
 581
 582         // process the post
 583         string cookie;
 584         RPCError* status = shire.sessionCreate(elements.first, r->connection->remote_ip, cookie);
 585
 586         if (status->isError()) {
 587             ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 588                     "shib_handler() POST process failed (%d): %s", status->getCode(), status->getText());
 589
 590             if (status->isRetryable()) {
 591                 delete status;
 592                 ap_log_rerror(APLOG_MARK,APLOG_INFO|APLOG_NOERRNO,SH_AP_R(r),
 593                         "shib_handler() retryable error, generating new AuthnRequest");
 594                 ap_table_setn(r->headers_out,"Location",ap_pstrdup(r->pool,shire.getAuthnRequest(elements.second)));
 595                 return REDIRECT;
 596             }
 597
 598             // return this error to the user.
 599             markupProcessor.insert(*status);
 600             delete status;
 601             return shib_error_page(r, application, "shire", markupProcessor);
 602         }
 603         delete status;
 604
 605         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 606                   "shib_handler() POST process succeeded.  New session: %s", cookie.c_str());
 607
 608         // We've got a good session, set the cookie...
 609         char* val = ap_psprintf(r->pool,"%s=%s%s",shib_cookie.second,cookie.c_str(),
 610             shib_cookie_props.first ? shib_cookie_props.second : "; path=/");
 611         ap_table_setn(r->err_headers_out, "Set-Cookie", val);
 612         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_handler() setting cookie: %s", val);
 613
 614         // ... and redirect to the target
 615         ap_table_setn(r->headers_out, "Location", ap_pstrdup(r->pool,elements.second));
 616         return REDIRECT;
 617     }
 618     catch (ShibTargetException &e) {
 619         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_handler() caught exception: %s", e.what());
 620         markupProcessor.insert("errorType", "Session Creation Service Error");
 621         markupProcessor.insert("errorText", e.what());
 622         markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 623         return shib_error_page(r, application, "shire", markupProcessor);
 624     }
 625 #ifndef _DEBUG
 626     catch (...) {
 627         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_handler(): unexpected exception");
 628         markupProcessor.insert("errorType", "Session Creation Service Error");
 629         markupProcessor.insert("errorText", "Unknown Exception");
 630         markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 631         return shib_error_page(r, application, "shire", markupProcessor);
 632     }
 633 #endif
 634
 635     ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),"shib_handler() server error");
 636     return SERVER_ERROR;
 637 }
 638
 639 static SH_AP_TABLE* groups_for_user(request_rec* r, const char* user, char* grpfile)
 640 {
 641     SH_AP_CONFIGFILE* f;
 642     SH_AP_TABLE* grps=ap_make_table(r->pool,15);
 643     char l[MAX_STRING_LEN];
 644     const char *group_name, *ll, *w;
 645
 646 #ifdef SHIB_APACHE_13
 647     if (!(f=ap_pcfg_openfile(r->pool,grpfile))) {
 648 #else
 649     if (ap_pcfg_openfile(&f,r->pool,grpfile) != APR_SUCCESS) {
 650 #endif
 651         ap_log_rerror(APLOG_MARK,APLOG_DEBUG,SH_AP_R(r),"groups_for_user() could not open group file: %s\n",grpfile);
 652         return NULL;
 653     }
 654
 655     SH_AP_POOL* sp;
 656 #ifdef SHIB_APACHE_13
 657     sp=ap_make_sub_pool(r->pool);
 658 #else
 659     if (apr_pool_create(&sp,r->pool) != APR_SUCCESS) {
 660         ap_log_rerror(APLOG_MARK,APLOG_ERR,0,r,
 661             "groups_for_user() could not create a subpool");
 662         return NULL;
 663     }
 664 #endif
 665
 666     while (!(ap_cfg_getline(l,MAX_STRING_LEN,f))) {
 667         if ((*l=='#') || (!*l))
 668             continue;
 669         ll = l;
 670         ap_clear_pool(sp);
 671
 672         group_name=ap_getword(sp,&ll,':');
 673
 674         while (*ll) {
 675             w=ap_getword_conf(sp,&ll);
 676             if (!strcmp(w,user)) {
 677                 ap_table_setn(grps,ap_pstrdup(r->pool,group_name),"in");
 678                 break;
 679             }
 680         }
 681     }
 682     ap_cfg_closefile(f);
 683     ap_destroy_pool(sp);
 684     return grps;
 685 }
 686
 687 /*
 688  * shib_auth_checker() -- a simple resource manager to
 689  * process the .htaccess settings and copy attributes
 690  * into the HTTP headers.
 691  */
 692 extern "C" int shib_auth_checker(request_rec* r)
 693 {
 694     shib_dir_config* dc=
 695         (shib_dir_config*)ap_get_module_config(r->per_dir_config,&mod_shib);
 696
 697     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() executing");
 698
 699     // Regular access to arbitrary resource...check AuthType
 700     const char* auth_type=ap_auth_type(r);
 701     if (!auth_type || strcasecmp(auth_type,"shibboleth"))
 702         return DECLINED;
 703
 704     ostringstream threadid;
 705     threadid << "[" << getpid() << "] shibrm" << '\0';
 706     saml::NDC ndc(threadid.str().c_str());
 707
 708     // We lock the configuration system for the duration.
 709     IConfig* conf=g_Config->getINI();
 710     Locker locker(conf);
 711
 712     const char* application_id=ap_table_get(r->headers_in,"Shib-Application-ID");
 713     const IApplication* application=NULL;
 714     if (application_id)
 715         application = conf->getApplication(application_id);
 716
 717     // mod_auth clone
 718
 719     int m=r->method_number;
 720     bool method_restricted=false;
 721     const char *t, *w;
 722
 723     const array_header* reqs_arr=ap_requires(r);
 724     if (!reqs_arr)
 725         return OK;
 726
 727     require_line* reqs=(require_line*)reqs_arr->elts;
 728
 729     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"REQUIRE nelts: %d", reqs_arr->nelts);
 730     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"REQUIRE all: %d", dc->bRequireAll);
 731
 732     vector<bool> auth_OK(reqs_arr->nelts,false);
 733
 734 #define SHIB_AP_CHECK_IS_OK {       \
 735      if (dc->bRequireAll < 1)    \
 736          return OK;      \
 737      auth_OK[x] = true;      \
 738      continue;           \
 739 }
 740
 741     for (int x=0; x<reqs_arr->nelts; x++) {
 742         auth_OK[x] = false;
 743         if (!(reqs[x].method_mask & (1 << m)))
 744             continue;
 745         method_restricted=true;
 746
 747         t = reqs[x].requirement;
 748         w = ap_getword_white(r->pool, &t);
 749
 750         if (!strcmp(w,"valid-user")) {
 751             ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() accepting valid-user");
 752             SHIB_AP_CHECK_IS_OK;
 753         }
 754         else if (!strcmp(w,"user") && SH_AP_USER(r)) {
 755             bool regexp=false;
 756             while (*t) {
 757                 w=ap_getword_conf(r->pool,&t);
 758                 if (*w=='~') {
 759                     regexp=true;
 760                     continue;
 761                 }
 762
 763                 if (regexp) {
 764                     try {
 765                         // To do regex matching, we have to convert from UTF-8.
 766                         auto_ptr<XMLCh> trans(fromUTF8(w));
 767                         RegularExpression re(trans.get());
 768                         auto_ptr<XMLCh> trans2(fromUTF8(SH_AP_USER(r)));
 769                         if (re.matches(trans2.get())) {
 770                             ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() accepting user: %s",w);
 771                             SHIB_AP_CHECK_IS_OK;
 772                         }
 773                     }
 774                     catch (XMLException& ex) {
 775                         auto_ptr_char tmp(ex.getMessage());
 776                         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 777                                         "shib_auth_checker caught exception while parsing regular expression (%s): %s",w,tmp.get());
 778                     }
 779                 }
 780                 else if (!strcmp(SH_AP_USER(r),w)) {
 781                     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() accepting user: %s",w);
 782                     SHIB_AP_CHECK_IS_OK;
 783                 }
 784             }
 785         }
 786         else if (!strcmp(w,"group")) {
 787             SH_AP_TABLE* grpstatus=NULL;
 788             if (dc->szAuthGrpFile && SH_AP_USER(r)) {
 789                 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() using groups file: %s\n",dc->szAuthGrpFile);
 790                 grpstatus=groups_for_user(r,SH_AP_USER(r),dc->szAuthGrpFile);
 791             }
 792             if (!grpstatus)
 793                 return DECLINED;
 794
 795             while (*t) {
 796                 w=ap_getword_conf(r->pool,&t);
 797                 if (ap_table_get(grpstatus,w)) {
 798                     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() accepting group: %s",w);
 799                     SHIB_AP_CHECK_IS_OK;
 800                 }
 801             }
 802         }
 803         else {
 804             Iterator<IAAP*> provs=application ? application->getAAPProviders() : EMPTY(IAAP*);
 805             AAP wrapper(provs,w);
 806             if (wrapper.fail()) {
 807                 ap_log_rerror(APLOG_MARK,APLOG_WARNING|APLOG_NOERRNO,SH_AP_R(r),
 808                     "shib_auth_checker() didn't recognize require rule: %s\n",w);
 809                 continue;
 810             }
 811
 812             bool regexp=false;
 813             const char* vals=ap_table_get(r->headers_in,wrapper->getHeader());
 814             while (*t && vals) {
 815                 w=ap_getword_conf(r->pool,&t);
 816                 if (*w=='~') {
 817                     regexp=true;
 818                     continue;
 819                 }
 820
 821                 try {
 822                     auto_ptr<RegularExpression> re;
 823                     if (regexp) {
 824                         delete re.release();
 825                         auto_ptr<XMLCh> trans(fromUTF8(w));
 826                         auto_ptr<RegularExpression> temp(new RegularExpression(trans.get()));
 827                         re=temp;
 828                     }
 829
 830                     string vals_str(vals);
 831                     int j = 0;
 832                     for (int i = 0;  i < vals_str.length();  i++) {
 833                         if (vals_str.at(i) == ';') {
 834                             if (i == 0) {
 835                                 ap_log_rerror(APLOG_MARK,APLOG_WARNING|APLOG_NOERRNO,SH_AP_R(r),
 836                                                 "shib_auth_checker() invalid header encoding %s: starts with semicolon", vals);
 837                                 return SERVER_ERROR;
 838                             }
 839
 840                             if (vals_str.at(i-1) == '\\') {
 841                                 vals_str.erase(i-1, 1);
 842                                 i--;
 843                                 continue;
 844                             }
 845
 846                             string val = vals_str.substr(j, i-j);
 847                             j = i+1;
 848                             if (regexp) {
 849                                 auto_ptr<XMLCh> trans(fromUTF8(val.c_str()));
 850                                 if (re->matches(trans.get())) {
 851                                     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 852                                                     "shib_auth_checker() expecting %s, got %s: authorization granted", w, val.c_str());
 853                                     SHIB_AP_CHECK_IS_OK;
 854                                 }
 855                             }
 856                             else if (val==w) {
 857                                 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 858                                                 "shib_auth_checker() expecting %s, got %s: authorization granted", w, val.c_str());
 859                                 SHIB_AP_CHECK_IS_OK;
 860                             }
 861                             else {
 862                                 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 863                                                 "shib_auth_checker() expecting %s, got %s: authorization not granted", w, val.c_str());
 864                             }
 865                         }
 866                     }
 867
 868                     string val = vals_str.substr(j, vals_str.length()-j);
 869                     if (regexp) {
 870                         auto_ptr<XMLCh> trans(fromUTF8(val.c_str()));
 871                         if (re->matches(trans.get())) {
 872                             ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 873                                             "shib_auth_checker() expecting %s, got %s: authorization granted", w, val.c_str());
 874                             SHIB_AP_CHECK_IS_OK;
 875                         }
 876                     }
 877                     else if (val==w) {
 878                         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 879                                         "shib_auth_checker() expecting %s, got %s: authorization granted", w, val.c_str());
 880                         SHIB_AP_CHECK_IS_OK;
 881                     }
 882                     else {
 883                         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 884                                         "shib_auth_checker() expecting %s, got %s: authorization not granted", w, val.c_str());
 885                     }
 886                 }
 887                 catch (XMLException& ex) {
 888                     auto_ptr_char tmp(ex.getMessage());
 889                     ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 890                                     "shib_auth_checker caught exception while parsing regular expression (%s): %s",w,tmp.get());
 891                 }
 892             }
 893         }
 894     }
 895
 896     // check if all require directives are true
 897     bool auth_all_OK = true;
 898     for (int i= 0; i<reqs_arr->nelts; i++) {
 899         auth_all_OK &= auth_OK[i];
 900     }
 901     if (auth_all_OK)
 902         return OK;
 903
 904     if (!method_restricted)
 905         return OK;
 906
 907     if (!application_id) {
 908         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 909            "shib_auth_checker: Shib-Application-ID header not found in request");
 910         return HTTP_FORBIDDEN;
 911     }
 912     else if (!application) {
 913         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 914            "shib_auth_checker: unable to map request to application settings, check configuration");
 915         return HTTP_FORBIDDEN;
 916     }
 917
 918     ShibMLP markupProcessor(application);
 919     markupProcessor.insert("requestURL", ap_construct_url(r->pool,r->unparsed_uri,r));
 920     return shib_error_page(r, application, "access", markupProcessor);
 921 }
 922
 923 /*
 924  * shib_exit()
 925  *  Cleanup the (per-process) pool info.
 926  */
 927 #ifdef SHIB_APACHE_13
 928 extern "C" void shib_exit(server_rec* s, SH_AP_POOL* p)
 929 {
 930 #else
 931 extern "C" apr_status_t shib_exit(void* data)
 932 {
 933     server_rec* s = NULL;
 934 #endif
 935     g_Config->shutdown();
 936     g_Config = NULL;
 937     ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_exit() done");
 938 #ifndef SHIB_APACHE_13
 939     return OK;
 940 #endif
 941 }
 942
 943 static const XMLCh Apache[] =
 944 { chLatin_A, chLatin_p, chLatin_a, chLatin_c, chLatin_h, chLatin_e, chNull };
 945 static const XMLCh apacheConfig[] =
 946 { chLatin_a, chLatin_p, chLatin_a, chLatin_c, chLatin_h, chLatin_e,
 947   chLatin_C, chLatin_o, chLatin_n, chLatin_f, chLatin_i, chLatin_g, chNull
 948 };
 949 static const XMLCh Implementation[] =
 950 { chLatin_I, chLatin_m, chLatin_p, chLatin_l, chLatin_e, chLatin_m, chLatin_e, chLatin_n, chLatin_t, chLatin_a, chLatin_t, chLatin_i, chLatin_o, chLatin_n, chNull };
 951
 952 /*
 953  * shire_child_init()
 954  *  Things to do when the child process is initialized.
 955  *  (or after the configs are read in apache-2)
 956  */
 957 #ifdef SHIB_APACHE_13
 958 extern "C" void shib_child_init(server_rec* s, SH_AP_POOL* p)
 959 #else
 960 extern "C" int shib_post_config(apr_pool_t* pconf, apr_pool_t* plog,
 961                                 apr_pool_t* ptemp, server_rec* s)
 962 #endif
 963 {
 964     // Initialize runtime components.
 965
 966     ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() starting");
 967
 968     if (g_Config) {
 969         ap_log_error(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init(): already initialized!");
 970 #ifdef SHIB_APACHE_13
 971         exit(1);
 972 #else
 973         return OK;
 974 #endif
 975     }
 976
 977     try {
 978         g_Config=&ShibTargetConfig::getConfig();
 979         g_Config->setFeatures(
 980             ShibTargetConfig::Listener |
 981             ShibTargetConfig::Metadata |
 982             ShibTargetConfig::AAP |
 983             ShibTargetConfig::RequestMapper |
 984             ShibTargetConfig::SHIREExtensions
 985             );
 986         if (!g_Config->init(g_szSchemaDir,g_szSHIBConfig)) {
 987             ap_log_error(APLOG_MARK,APLOG_CRIT|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init(): already initialized!");
 988             exit(1);
 989         }
 990
 991         // Access the implementation-specifics for whether to use old Apache config style...
 992         IConfig* conf=g_Config->getINI();
 993         Locker locker(conf);
 994         const IPropertySet* props=conf->getPropertySet("SHIRE");
 995         if (props) {
 996             const DOMElement* impl=saml::XML::getFirstChildElement(
 997                 props->getElement(),ShibTargetConfig::SHIBTARGET_NS,Implementation
 998                 );
 999             if (impl && (impl=saml::XML::getFirstChildElement(impl,ShibTargetConfig::SHIBTARGET_NS,Apache))) {
1000                 const XMLCh* flag=impl->getAttributeNS(NULL,apacheConfig);
1001                 if (flag && (*flag==chDigit_1 || *flag==chLatin_t))
1002                     g_bApacheConf=true;
1003             }
1004         }
1005     }
1006     catch (...) {
1007         ap_log_error(APLOG_MARK,APLOG_CRIT|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() failed to initialize SHIB Target");
1008         exit (1);
1009     }
1010
1011     // Set the cleanup handler
1012     apr_pool_cleanup_register(pconf, NULL, shib_exit, NULL);
1013
1014     ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),
1015         "shib_child_init() done, apacheConfig set to %s", g_bApacheConf ? "true" : "false");
1016
1017 #ifndef SHIB_APACHE_13
1018     return OK;
1019 #endif
1020 }
1021
1022 #ifdef SHIB_APACHE_13
1023
1024 // SHIB Module commands
1025
1026 static command_rec shire_cmds[] = {
1027   {"SHIREConfig", (config_fn_t)ap_set_global_string_slot, &g_szSHIBConfig,
1028    RSRC_CONF, TAKE1, "Path to shibboleth.xml config file."},
1029   {"ShibConfig", (config_fn_t)ap_set_global_string_slot, &g_szSHIBConfig,
1030    RSRC_CONF, TAKE1, "Path to shibboleth.xml config file."},
1031   {"ShibSchemaDir", (config_fn_t)ap_set_global_string_slot, &g_szSchemaDir,
1032    RSRC_CONF, TAKE1, "Path to Shibboleth XML schema directory."},
1033
1034   {"ShibBasicHijack", (config_fn_t)ap_set_flag_slot,
1035    (void *) XtOffsetOf (shib_dir_config, bBasicHijack),
1036    OR_AUTHCFG, FLAG, "Respond to AuthType Basic and convert to shib?"},
1037   {"ShibRequireSession", (config_fn_t)ap_set_flag_slot,
1038    (void *) XtOffsetOf (shib_dir_config, bRequireSession),
1039    OR_AUTHCFG, FLAG, "Initiates a new session if one does not exist."},
1040   {"ShibExportAssertion", (config_fn_t)ap_set_flag_slot,
1041    (void *) XtOffsetOf (shib_dir_config, bExportAssertion),
1042    OR_AUTHCFG, FLAG, "Export SAML assertion to Shibboleth-defined header?"},
1043   {"AuthGroupFile", (config_fn_t)ap_set_file_slot,
1044    (void *) XtOffsetOf (shib_dir_config, szAuthGrpFile),
1045    OR_AUTHCFG, TAKE1, "text file containing group names and member user IDs"},
1046   {"ShibRequireAll", (config_fn_t)ap_set_flag_slot,
1047    (void *) XtOffsetOf (shib_dir_config, bRequireAll),
1048    OR_AUTHCFG, FLAG, "All require directives must match!"},
1049
1050   {NULL}
1051 };
1052
1053 extern "C"{
1054 handler_rec shib_handlers[] = {
1055   { "shib-shire-post", shib_post_handler },
1056   { NULL }
1057 };
1058
1059 module MODULE_VAR_EXPORT mod_shib = {
1060     STANDARD_MODULE_STUFF,
1061     NULL,                        /* initializer */
1062     create_shib_dir_config,     /* dir config creater */
1063     merge_shib_dir_config,      /* dir merger --- default is to override */
1064     NULL,                       /* server config */
1065     NULL,                       /* merge server config */
1066     shire_cmds,                 /* command table */
1067     shib_handlers,              /* handlers */
1068     NULL,                       /* filename translation */
1069     shib_check_user,            /* check_user_id */
1070     shib_auth_checker,          /* check auth */
1071     NULL,                       /* check access */
1072     NULL,                       /* type_checker */
1073     NULL,                       /* fixups */
1074     NULL,                       /* logger */
1075     NULL,                       /* header parser */
1076     shib_child_init,            /* child_init */
1077     shib_exit,                  /* child_exit */
1078     NULL                        /* post read-request */
1079 };
1080
1081 #elif defined(SHIB_APACHE_20)
1082
1083 extern "C" void shib_register_hooks (apr_pool_t *p)
1084 {
1085   ap_hook_post_config(shib_post_config, NULL, NULL, APR_HOOK_MIDDLE);
1086   ap_hook_check_user_id(shib_check_user, NULL, NULL, APR_HOOK_MIDDLE);
1087   ap_hook_auth_checker(shib_auth_checker, NULL, NULL, APR_HOOK_FIRST);
1088   ap_hook_handler(shib_post_handler, NULL, NULL, APR_HOOK_LAST);
1089 }
1090
1091 // SHIB Module commands
1092
1093 extern "C" {
1094 static command_rec shib_cmds[] = {
1095   AP_INIT_TAKE1("ShibConfig",
1096                 (config_fn_t)ap_set_global_string_slot, &g_szSHIBConfig,
1097                 RSRC_CONF, "Path to shibboleth.xml config file."),
1098   AP_INIT_TAKE1("ShibSchemaDir",
1099      (config_fn_t)ap_set_global_string_slot, &g_szSchemaDir,
1100       RSRC_CONF, "Path to Shibboleth XML schema directory."),
1101
1102   AP_INIT_FLAG("ShibBasicHijack", (config_fn_t)ap_set_flag_slot,
1103                (void *) offsetof (shib_dir_config, bBasicHijack),
1104                OR_AUTHCFG, "Respond to AuthType Basic and convert to shib?"),
1105   AP_INIT_FLAG("ShibRequireSession", (config_fn_t)ap_set_flag_slot,
1106          (void *) offsetof (shib_dir_config, bRequireSession),
1107         OR_AUTHCFG, "Initiates a new session if one does not exist."),
1108   AP_INIT_FLAG("ShibExportAssertion", (config_fn_t)ap_set_flag_slot,
1109          (void *) offsetof (shib_dir_config, bExportAssertion),
1110         OR_AUTHCFG, "Export SAML assertion to Shibboleth-defined header?"),
1111   AP_INIT_TAKE1("AuthGroupFile", (config_fn_t)ap_set_file_slot,
1112                 (void *) offsetof (shib_dir_config, szAuthGrpFile),
1113                 OR_AUTHCFG, "text file containing group names and member user IDs"),
1114   AP_INIT_FLAG("ShibRequireAll", (config_fn_t)ap_set_flag_slot,
1115                (void *) offsetof (shib_dir_config, bRequireAll),
1116                OR_AUTHCFG, "All require directives must match!"),
1117
1118   {NULL}
1119 };
1120
1121 module AP_MODULE_DECLARE_DATA mod_shib = {
1122     STANDARD20_MODULE_STUFF,
1123     create_shib_dir_config,     /* create dir config */
1124     merge_shib_dir_config,      /* merge dir config --- default is to override */
1125     NULL,                       /* create server config */
1126     NULL,                       /* merge server config */
1127     shib_cmds,                  /* command table */
1128     shib_register_hooks         /* register hooks */
1129 };
1130
1131 #else
1132 #error "undefined APACHE version"
1133 #endif
1134
1135 }