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 #ifndef SHIB_APACHE_13
 463     // With 2.x, this handler always runs, though last.
 464     // We check if shib_check_user ran, because it will detect a SHIRE request
 465     // and dispatch it directly.
 466     void* data;
 467     apr_pool_userdata_get(&data,g_UserDataKey,r->pool);
 468     if (data==(const void*)42) {
 469         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_post_handler skipped since check_user ran");
 470         return DECLINED;
 471     }
 472 #endif
 473
 474     ostringstream threadid;
 475     threadid << "[" << getpid() << "] shib_post_handler" << '\0';
 476     saml::NDC ndc(threadid.str().c_str());
 477
 478     // We lock the configuration system for the duration.
 479     IConfig* conf=g_Config->getINI();
 480     Locker locker(conf);
 481
 482     // Map request to application and content settings.
 483     IRequestMapper* mapper=conf->getRequestMapper();
 484     Locker locker2(mapper);
 485     IRequestMapper::Settings settings=mapper->getSettingsFromParsedURL(
 486         ap_http_method(r), ap_get_server_name(r), ap_get_server_port(r), r->unparsed_uri
 487         );
 488     pair<bool,const char*> application_id=settings.first->getString("applicationId");
 489     const IApplication* application=conf->getApplication(application_id.second);
 490     if (!application) {
 491         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 492            "shib_post_handler: unable to map request to application settings, check configuration");
 493         return SERVER_ERROR;
 494     }
 495
 496     // Declare SHIRE object for this request.
 497     SHIRE shire(application);
 498
 499     return shib_handler(r, application, shire);
 500 }
 501
 502 int shib_handler(request_rec* r, const IApplication* application, SHIRE& shire)
 503 {
 504     // Prime the pump...
 505     const char* targeturl = ap_construct_url(r->pool,r->unparsed_uri,r);
 506
 507     // Make sure we only process the SHIRE requests.
 508     if (!strstr(targeturl,shire.getShireURL(targeturl)))
 509         return DECLINED;
 510
 511     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_handler() running");
 512
 513     const IPropertySet* sessionProps=application->getPropertySet("Sessions");
 514     if (!sessionProps) {
 515         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 516            "shib_post_handler: unable to map request to application session settings, check configuration");
 517         return SERVER_ERROR;
 518     }
 519
 520     pair<const char*,const char*> shib_cookie=shire.getCookieNameProps();   // always returns something
 521
 522     ShibMLP markupProcessor;
 523     markupProcessor.insert("requestURL", targeturl);
 524
 525     // Process SHIRE request
 526     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_handler() Beginning SHIRE processing");
 527
 528     try {
 529         pair<bool,bool> shireSSL=sessionProps->getBool("shireSSL");
 530
 531         // Make sure this is SSL, if it should be
 532         if ((!shireSSL.first || shireSSL.second) && strcmp(ap_http_method(r),"https"))
 533             throw ShibTargetException(SHIBRPC_OK, "blocked non-SSL access to session creation service");
 534
 535         // If this is a GET, we manufacture an AuthnRequest.
 536         if (!strcasecmp(r->method,"GET")) {
 537             const char* areq=r->args ? shire.getLazyAuthnRequest(r->args) : NULL;
 538             if (!areq)
 539                 throw ShibTargetException(SHIBRPC_OK, "malformed arguments to request a new session");
 540             ap_table_setn(r->headers_out, "Location", ap_pstrdup(r->pool,areq));
 541             return REDIRECT;
 542         }
 543         else if (strcasecmp(r->method,"POST")) {
 544             throw ShibTargetException(SHIBRPC_OK, "blocked non-POST to SHIRE POST processor");
 545         }
 546
 547         // Sure sure this POST is an appropriate content type
 548         const char *ct = ap_table_get(r->headers_in, "Content-type");
 549         if (!ct || strcasecmp(ct, "application/x-www-form-urlencoded"))
 550             throw ShibTargetException(SHIBRPC_OK,
 551                                       ap_psprintf(r->pool, "blocked bad content-type to SHIRE POST processor: %s", (ct ? ct : "")));
 552
 553         // Read the posted data
 554         if (ap_setup_client_block(r, REQUEST_CHUNKED_ERROR))
 555             throw ShibTargetException(SHIBRPC_OK, "CGI setup_client_block failed");
 556         if (!ap_should_client_block(r))
 557             throw ShibTargetException(SHIBRPC_OK, "CGI should_client_block failed");
 558         if (r->remaining > 1024*1024)
 559             throw ShibTargetException (SHIBRPC_OK, "CGI length too long...");
 560
 561         string cgistr;
 562         char buff[HUGE_STRING_LEN];
 563         ap_hard_timeout("[mod_shib] CGI Parser", r);
 564         memset(buff, 0, sizeof(buff));
 565         while (ap_get_client_block(r, buff, sizeof(buff)-1) > 0) {
 566             cgistr += buff;
 567             memset(buff, 0, sizeof(buff));
 568         }
 569         ap_kill_timeout(r);
 570
 571         // Parse the submission.
 572         pair<const char*,const char*> elements=shire.getFormSubmission(cgistr.c_str(),cgistr.length());
 573
 574         // Make sure the SAML Response parameter exists
 575         if (!elements.first || !*elements.first)
 576             throw ShibTargetException(SHIBRPC_OK, "SHIRE POST failed to find SAMLResponse form element");
 577
 578         // Make sure the target parameter exists
 579         if (!elements.second || !*elements.second)
 580             throw ShibTargetException(SHIBRPC_OK, "SHIRE POST failed to find TARGET form element");
 581
 582         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 583             "shib_handler() Processing POST for target: %s", elements.second);
 584
 585         // process the post
 586         string cookie;
 587         RPCError* status = shire.sessionCreate(elements.first, r->connection->remote_ip, cookie);
 588
 589         if (status->isError()) {
 590             ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 591                     "shib_handler() POST process failed (%d): %s", status->getCode(), status->getText());
 592
 593             if (status->isRetryable()) {
 594                 delete status;
 595                 ap_log_rerror(APLOG_MARK,APLOG_INFO|APLOG_NOERRNO,SH_AP_R(r),
 596                         "shib_handler() retryable error, generating new AuthnRequest");
 597                 ap_table_setn(r->headers_out,"Location",ap_pstrdup(r->pool,shire.getAuthnRequest(elements.second)));
 598                 return REDIRECT;
 599             }
 600
 601             // return this error to the user.
 602             markupProcessor.insert(*status);
 603             delete status;
 604             return shib_error_page(r, application, "shire", markupProcessor);
 605         }
 606         delete status;
 607
 608         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 609                   "shib_handler() POST process succeeded.  New session: %s", cookie.c_str());
 610
 611         // We've got a good session, set the cookie...
 612         char* val = ap_psprintf(r->pool,"%s=%s%s",shib_cookie.first,cookie.c_str(),shib_cookie.second);
 613         ap_table_setn(r->err_headers_out, "Set-Cookie", val);
 614         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_handler() setting cookie: %s", val);
 615
 616         // ... and redirect to the target
 617         ap_table_setn(r->headers_out, "Location", ap_pstrdup(r->pool,elements.second));
 618         return REDIRECT;
 619     }
 620     catch (ShibTargetException &e) {
 621         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_handler() caught exception: %s", e.what());
 622         markupProcessor.insert("errorType", "Session Creation Service Error");
 623         markupProcessor.insert("errorText", e.what());
 624         markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 625         return shib_error_page(r, application, "shire", markupProcessor);
 626     }
 627 #ifndef _DEBUG
 628     catch (...) {
 629         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_handler(): unexpected exception");
 630         markupProcessor.insert("errorType", "Session Creation Service Error");
 631         markupProcessor.insert("errorText", "Unknown Exception");
 632         markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 633         return shib_error_page(r, application, "shire", markupProcessor);
 634     }
 635 #endif
 636
 637     ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),"shib_handler() server error");
 638     return SERVER_ERROR;
 639 }
 640
 641 static SH_AP_TABLE* groups_for_user(request_rec* r, const char* user, char* grpfile)
 642 {
 643     SH_AP_CONFIGFILE* f;
 644     SH_AP_TABLE* grps=ap_make_table(r->pool,15);
 645     char l[MAX_STRING_LEN];
 646     const char *group_name, *ll, *w;
 647
 648 #ifdef SHIB_APACHE_13
 649     if (!(f=ap_pcfg_openfile(r->pool,grpfile))) {
 650 #else
 651     if (ap_pcfg_openfile(&f,r->pool,grpfile) != APR_SUCCESS) {
 652 #endif
 653         ap_log_rerror(APLOG_MARK,APLOG_DEBUG,SH_AP_R(r),"groups_for_user() could not open group file: %s\n",grpfile);
 654         return NULL;
 655     }
 656
 657     SH_AP_POOL* sp;
 658 #ifdef SHIB_APACHE_13
 659     sp=ap_make_sub_pool(r->pool);
 660 #else
 661     if (apr_pool_create(&sp,r->pool) != APR_SUCCESS) {
 662         ap_log_rerror(APLOG_MARK,APLOG_ERR,0,r,
 663             "groups_for_user() could not create a subpool");
 664         return NULL;
 665     }
 666 #endif
 667
 668     while (!(ap_cfg_getline(l,MAX_STRING_LEN,f))) {
 669         if ((*l=='#') || (!*l))
 670             continue;
 671         ll = l;
 672         ap_clear_pool(sp);
 673
 674         group_name=ap_getword(sp,&ll,':');
 675
 676         while (*ll) {
 677             w=ap_getword_conf(sp,&ll);
 678             if (!strcmp(w,user)) {
 679                 ap_table_setn(grps,ap_pstrdup(r->pool,group_name),"in");
 680                 break;
 681             }
 682         }
 683     }
 684     ap_cfg_closefile(f);
 685     ap_destroy_pool(sp);
 686     return grps;
 687 }
 688
 689 /*
 690  * shib_auth_checker() -- a simple resource manager to
 691  * process the .htaccess settings and copy attributes
 692  * into the HTTP headers.
 693  */
 694 extern "C" int shib_auth_checker(request_rec* r)
 695 {
 696     shib_dir_config* dc=
 697         (shib_dir_config*)ap_get_module_config(r->per_dir_config,&mod_shib);
 698
 699     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() executing");
 700
 701     // Regular access to arbitrary resource...check AuthType
 702     const char* auth_type=ap_auth_type(r);
 703     if (!auth_type || strcasecmp(auth_type,"shibboleth"))
 704         return DECLINED;
 705
 706     ostringstream threadid;
 707     threadid << "[" << getpid() << "] shibrm" << '\0';
 708     saml::NDC ndc(threadid.str().c_str());
 709
 710     // We lock the configuration system for the duration.
 711     IConfig* conf=g_Config->getINI();
 712     Locker locker(conf);
 713
 714     const char* application_id=ap_table_get(r->headers_in,"Shib-Application-ID");
 715     const IApplication* application=NULL;
 716     if (application_id)
 717         application = conf->getApplication(application_id);
 718
 719     // mod_auth clone
 720
 721     int m=r->method_number;
 722     bool method_restricted=false;
 723     const char *t, *w;
 724
 725     const array_header* reqs_arr=ap_requires(r);
 726     if (!reqs_arr)
 727         return OK;
 728
 729     require_line* reqs=(require_line*)reqs_arr->elts;
 730
 731     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"REQUIRE nelts: %d", reqs_arr->nelts);
 732     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"REQUIRE all: %d", dc->bRequireAll);
 733
 734     vector<bool> auth_OK(reqs_arr->nelts,false);
 735
 736 #define SHIB_AP_CHECK_IS_OK {       \
 737      if (dc->bRequireAll < 1)    \
 738          return OK;      \
 739      auth_OK[x] = true;      \
 740      continue;           \
 741 }
 742
 743     for (int x=0; x<reqs_arr->nelts; x++) {
 744         auth_OK[x] = false;
 745         if (!(reqs[x].method_mask & (1 << m)))
 746             continue;
 747         method_restricted=true;
 748
 749         t = reqs[x].requirement;
 750         w = ap_getword_white(r->pool, &t);
 751
 752         if (!strcasecmp(w,"Shibboleth")) {
 753             // This is a dummy rule needed because Apache conflates authn and authz.
 754             // Without some require rule, AuthType is ignored and no check_user hooks run.
 755             SHIB_AP_CHECK_IS_OK;
 756         }
 757         else if (!strcmp(w,"valid-user") && application_id) {
 758             ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() accepting valid-user");
 759             SHIB_AP_CHECK_IS_OK;
 760         }
 761         else if (!strcmp(w,"user") && SH_AP_USER(r)) {
 762             bool regexp=false;
 763             while (*t) {
 764                 w=ap_getword_conf(r->pool,&t);
 765                 if (*w=='~') {
 766                     regexp=true;
 767                     continue;
 768                 }
 769
 770                 if (regexp) {
 771                     try {
 772                         // To do regex matching, we have to convert from UTF-8.
 773                         auto_ptr<XMLCh> trans(fromUTF8(w));
 774                         RegularExpression re(trans.get());
 775                         auto_ptr<XMLCh> trans2(fromUTF8(SH_AP_USER(r)));
 776                         if (re.matches(trans2.get())) {
 777                             ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() accepting user: %s",w);
 778                             SHIB_AP_CHECK_IS_OK;
 779                         }
 780                     }
 781                     catch (XMLException& ex) {
 782                         auto_ptr_char tmp(ex.getMessage());
 783                         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 784                                         "shib_auth_checker caught exception while parsing regular expression (%s): %s",w,tmp.get());
 785                     }
 786                 }
 787                 else if (!strcmp(SH_AP_USER(r),w)) {
 788                     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() accepting user: %s",w);
 789                     SHIB_AP_CHECK_IS_OK;
 790                 }
 791             }
 792         }
 793         else if (!strcmp(w,"group")) {
 794             SH_AP_TABLE* grpstatus=NULL;
 795             if (dc->szAuthGrpFile && SH_AP_USER(r)) {
 796                 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() using groups file: %s\n",dc->szAuthGrpFile);
 797                 grpstatus=groups_for_user(r,SH_AP_USER(r),dc->szAuthGrpFile);
 798             }
 799             if (!grpstatus)
 800                 return DECLINED;
 801
 802             while (*t) {
 803                 w=ap_getword_conf(r->pool,&t);
 804                 if (ap_table_get(grpstatus,w)) {
 805                     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() accepting group: %s",w);
 806                     SHIB_AP_CHECK_IS_OK;
 807                 }
 808             }
 809         }
 810         else {
 811             Iterator<IAAP*> provs=application ? application->getAAPProviders() : EMPTY(IAAP*);
 812             AAP wrapper(provs,w);
 813             if (wrapper.fail()) {
 814                 ap_log_rerror(APLOG_MARK,APLOG_WARNING|APLOG_NOERRNO,SH_AP_R(r),
 815                     "shib_auth_checker() didn't recognize require rule: %s\n",w);
 816                 continue;
 817             }
 818
 819             bool regexp=false;
 820             const char* vals=ap_table_get(r->headers_in,wrapper->getHeader());
 821             while (*t && vals) {
 822                 w=ap_getword_conf(r->pool,&t);
 823                 if (*w=='~') {
 824                     regexp=true;
 825                     continue;
 826                 }
 827
 828                 try {
 829                     auto_ptr<RegularExpression> re;
 830                     if (regexp) {
 831                         delete re.release();
 832                         auto_ptr<XMLCh> trans(fromUTF8(w));
 833                         auto_ptr<RegularExpression> temp(new RegularExpression(trans.get()));
 834                         re=temp;
 835                     }
 836
 837                     string vals_str(vals);
 838                     int j = 0;
 839                     for (int i = 0;  i < vals_str.length();  i++) {
 840                         if (vals_str.at(i) == ';') {
 841                             if (i == 0) {
 842                                 ap_log_rerror(APLOG_MARK,APLOG_WARNING|APLOG_NOERRNO,SH_AP_R(r),
 843                                                 "shib_auth_checker() invalid header encoding %s: starts with semicolon", vals);
 844                                 return SERVER_ERROR;
 845                             }
 846
 847                             if (vals_str.at(i-1) == '\\') {
 848                                 vals_str.erase(i-1, 1);
 849                                 i--;
 850                                 continue;
 851                             }
 852
 853                             string val = vals_str.substr(j, i-j);
 854                             j = i+1;
 855                             if (regexp) {
 856                                 auto_ptr<XMLCh> trans(fromUTF8(val.c_str()));
 857                                 if (re->matches(trans.get())) {
 858                                     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 859                                                     "shib_auth_checker() expecting %s, got %s: authorization granted", w, val.c_str());
 860                                     SHIB_AP_CHECK_IS_OK;
 861                                 }
 862                             }
 863                             else if (val==w) {
 864                                 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 865                                                 "shib_auth_checker() expecting %s, got %s: authorization granted", w, val.c_str());
 866                                 SHIB_AP_CHECK_IS_OK;
 867                             }
 868                             else {
 869                                 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 870                                                 "shib_auth_checker() expecting %s, got %s: authorization not granted", w, val.c_str());
 871                             }
 872                         }
 873                     }
 874
 875                     string val = vals_str.substr(j, vals_str.length()-j);
 876                     if (regexp) {
 877                         auto_ptr<XMLCh> trans(fromUTF8(val.c_str()));
 878                         if (re->matches(trans.get())) {
 879                             ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 880                                             "shib_auth_checker() expecting %s, got %s: authorization granted", w, val.c_str());
 881                             SHIB_AP_CHECK_IS_OK;
 882                         }
 883                     }
 884                     else if (val==w) {
 885                         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 886                                         "shib_auth_checker() expecting %s, got %s: authorization granted", w, val.c_str());
 887                         SHIB_AP_CHECK_IS_OK;
 888                     }
 889                     else {
 890                         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 891                                         "shib_auth_checker() expecting %s, got %s: authorization not granted", w, val.c_str());
 892                     }
 893                 }
 894                 catch (XMLException& ex) {
 895                     auto_ptr_char tmp(ex.getMessage());
 896                     ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 897                                     "shib_auth_checker caught exception while parsing regular expression (%s): %s",w,tmp.get());
 898                 }
 899             }
 900         }
 901     }
 902
 903     // check if all require directives are true
 904     bool auth_all_OK = true;
 905     for (int i= 0; i<reqs_arr->nelts; i++) {
 906         auth_all_OK &= auth_OK[i];
 907     }
 908     if (auth_all_OK)
 909         return OK;
 910
 911     if (!method_restricted)
 912         return OK;
 913
 914     if (!application_id) {
 915         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 916            "shib_auth_checker: Shib-Application-ID header not found in request");
 917         return HTTP_FORBIDDEN;
 918     }
 919     else if (!application) {
 920         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 921            "shib_auth_checker: unable to map request to application settings, check configuration");
 922         return HTTP_FORBIDDEN;
 923     }
 924
 925     ShibMLP markupProcessor;
 926     markupProcessor.insert("requestURL", ap_construct_url(r->pool,r->unparsed_uri,r));
 927     return shib_error_page(r, application, "access", markupProcessor);
 928 }
 929
 930 /*
 931  * shib_exit()
 932  *  Cleanup the (per-process) pool info.
 933  */
 934 #ifdef SHIB_APACHE_13
 935 extern "C" void shib_exit(server_rec* s, SH_AP_POOL* p)
 936 {
 937 #else
 938 extern "C" apr_status_t shib_exit(void* data)
 939 {
 940     server_rec* s = NULL;
 941 #endif
 942     g_Config->shutdown();
 943     g_Config = NULL;
 944     ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_exit() done");
 945 #ifndef SHIB_APACHE_13
 946     return OK;
 947 #endif
 948 }
 949
 950 /*
 951  * shire_child_init()
 952  *  Things to do when the child process is initialized.
 953  *  (or after the configs are read in apache-2)
 954  */
 955 #ifdef SHIB_APACHE_13
 956 extern "C" void shib_child_init(server_rec* s, SH_AP_POOL* p)
 957 #else
 958 extern "C" int shib_post_config(apr_pool_t* pconf, apr_pool_t* plog,
 959                                 apr_pool_t* ptemp, server_rec* s)
 960 #endif
 961 {
 962     // Initialize runtime components.
 963
 964     ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() starting");
 965
 966     if (g_Config) {
 967         ap_log_error(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() already initialized!");
 968 #ifdef SHIB_APACHE_13
 969         exit(1);
 970 #else
 971         return OK;
 972 #endif
 973     }
 974
 975     try {
 976         g_Config=&ShibTargetConfig::getConfig();
 977         g_Config->setFeatures(
 978             ShibTargetConfig::Listener |
 979             ShibTargetConfig::Metadata |
 980             ShibTargetConfig::AAP |
 981             ShibTargetConfig::RequestMapper |
 982             ShibTargetConfig::SHIREExtensions
 983             );
 984         if (!g_Config->init(g_szSchemaDir,g_szSHIBConfig)) {
 985             ap_log_error(APLOG_MARK,APLOG_CRIT|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() failed to initialize SHIB Target");
 986             exit(1);
 987         }
 988     }
 989     catch (...) {
 990         ap_log_error(APLOG_MARK,APLOG_CRIT|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() failed to initialize SHIB Target");
 991         exit (1);
 992     }
 993
 994     // Set the cleanup handler
 995     apr_pool_cleanup_register(pconf, NULL, shib_exit, NULL);
 996
 997     ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() done");
 998
 999 #ifndef SHIB_APACHE_13
1000     return OK;
1001 #endif
1002 }
1003
1004 #ifdef SHIB_APACHE_13
1005
1006 // SHIB Module commands
1007
1008 static command_rec shire_cmds[] = {
1009   {"SHIREConfig", (config_fn_t)ap_set_global_string_slot, &g_szSHIBConfig,
1010    RSRC_CONF, TAKE1, "Path to shibboleth.xml config file."},
1011   {"ShibConfig", (config_fn_t)ap_set_global_string_slot, &g_szSHIBConfig,
1012    RSRC_CONF, TAKE1, "Path to shibboleth.xml config file."},
1013   {"ShibSchemaDir", (config_fn_t)ap_set_global_string_slot, &g_szSchemaDir,
1014    RSRC_CONF, TAKE1, "Path to Shibboleth XML schema directory."},
1015
1016   {"ShibBasicHijack", (config_fn_t)ap_set_flag_slot,
1017    (void *) XtOffsetOf (shib_dir_config, bBasicHijack),
1018    OR_AUTHCFG, FLAG, "Respond to AuthType Basic and convert to shib?"},
1019   {"ShibRequireSession", (config_fn_t)ap_set_flag_slot,
1020    (void *) XtOffsetOf (shib_dir_config, bRequireSession),
1021    OR_AUTHCFG, FLAG, "Initiates a new session if one does not exist."},
1022   {"ShibExportAssertion", (config_fn_t)ap_set_flag_slot,
1023    (void *) XtOffsetOf (shib_dir_config, bExportAssertion),
1024    OR_AUTHCFG, FLAG, "Export SAML assertion to Shibboleth-defined header?"},
1025   {"AuthGroupFile", (config_fn_t)ap_set_file_slot,
1026    (void *) XtOffsetOf (shib_dir_config, szAuthGrpFile),
1027    OR_AUTHCFG, TAKE1, "text file containing group names and member user IDs"},
1028   {"ShibRequireAll", (config_fn_t)ap_set_flag_slot,
1029    (void *) XtOffsetOf (shib_dir_config, bRequireAll),
1030    OR_AUTHCFG, FLAG, "All require directives must match!"},
1031
1032   {NULL}
1033 };
1034
1035 extern "C"{
1036 handler_rec shib_handlers[] = {
1037   { "shib-shire-post", shib_post_handler },
1038   { NULL }
1039 };
1040
1041 module MODULE_VAR_EXPORT mod_shib = {
1042     STANDARD_MODULE_STUFF,
1043     NULL,                        /* initializer */
1044     create_shib_dir_config,     /* dir config creater */
1045     merge_shib_dir_config,      /* dir merger --- default is to override */
1046     NULL,                       /* server config */
1047     NULL,                       /* merge server config */
1048     shire_cmds,                 /* command table */
1049     shib_handlers,              /* handlers */
1050     NULL,                       /* filename translation */
1051     shib_check_user,            /* check_user_id */
1052     shib_auth_checker,          /* check auth */
1053     NULL,                       /* check access */
1054     NULL,                       /* type_checker */
1055     NULL,                       /* fixups */
1056     NULL,                       /* logger */
1057     NULL,                       /* header parser */
1058     shib_child_init,            /* child_init */
1059     shib_exit,                  /* child_exit */
1060     NULL                        /* post read-request */
1061 };
1062
1063 #elif defined(SHIB_APACHE_20)
1064
1065 extern "C" void shib_register_hooks (apr_pool_t *p)
1066 {
1067   ap_hook_post_config(shib_post_config, NULL, NULL, APR_HOOK_MIDDLE);
1068   ap_hook_check_user_id(shib_check_user, NULL, NULL, APR_HOOK_MIDDLE);
1069   ap_hook_auth_checker(shib_auth_checker, NULL, NULL, APR_HOOK_FIRST);
1070   ap_hook_handler(shib_post_handler, NULL, NULL, APR_HOOK_LAST);
1071 }
1072
1073 // SHIB Module commands
1074
1075 extern "C" {
1076 static command_rec shib_cmds[] = {
1077   AP_INIT_TAKE1("ShibConfig",
1078                 (config_fn_t)ap_set_global_string_slot, &g_szSHIBConfig,
1079                 RSRC_CONF, "Path to shibboleth.xml config file."),
1080   AP_INIT_TAKE1("ShibSchemaDir",
1081      (config_fn_t)ap_set_global_string_slot, &g_szSchemaDir,
1082       RSRC_CONF, "Path to Shibboleth XML schema directory."),
1083
1084   AP_INIT_FLAG("ShibBasicHijack", (config_fn_t)ap_set_flag_slot,
1085                (void *) offsetof (shib_dir_config, bBasicHijack),
1086                OR_AUTHCFG, "Respond to AuthType Basic and convert to shib?"),
1087   AP_INIT_FLAG("ShibRequireSession", (config_fn_t)ap_set_flag_slot,
1088          (void *) offsetof (shib_dir_config, bRequireSession),
1089         OR_AUTHCFG, "Initiates a new session if one does not exist."),
1090   AP_INIT_FLAG("ShibExportAssertion", (config_fn_t)ap_set_flag_slot,
1091          (void *) offsetof (shib_dir_config, bExportAssertion),
1092         OR_AUTHCFG, "Export SAML assertion to Shibboleth-defined header?"),
1093   AP_INIT_TAKE1("AuthGroupFile", (config_fn_t)ap_set_file_slot,
1094                 (void *) offsetof (shib_dir_config, szAuthGrpFile),
1095                 OR_AUTHCFG, "text file containing group names and member user IDs"),
1096   AP_INIT_FLAG("ShibRequireAll", (config_fn_t)ap_set_flag_slot,
1097                (void *) offsetof (shib_dir_config, bRequireAll),
1098                OR_AUTHCFG, "All require directives must match!"),
1099
1100   {NULL}
1101 };
1102
1103 module AP_MODULE_DECLARE_DATA mod_shib = {
1104     STANDARD20_MODULE_STUFF,
1105     create_shib_dir_config,     /* create dir config */
1106     merge_shib_dir_config,      /* merge dir config --- default is to override */
1107     NULL,                       /* create server config */
1108     NULL,                       /* merge server config */
1109     shib_cmds,                  /* command table */
1110     shib_register_hooks         /* register hooks */
1111 };
1112
1113 #else
1114 #error "undefined APACHE version"
1115 #endif
1116
1117 }