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 OK;  // XXX: Or should this be DECLINED?
 273                         // Has to be OK because DECLINED will just cause Apache to fail when it can't locate
 274                         // anything to process the AuthType. No session plus requireSession false means
 275                         // do not authenticate the user.
 276         else if (status->isRetryable()) {
 277             // Oops, session is invalid. Generate AuthnRequest.
 278             ap_table_setn(r->headers_out,"Location",ap_pstrdup(r->pool,shire.getAuthnRequest(targeturl)));
 279             delete status;
 280             return REDIRECT;
 281         }
 282         else {
 283             // return the error page to the user
 284             markupProcessor.insert(*status);
 285             delete status;
 286             return shib_error_page(r, application, "shire", markupProcessor);
 287         }
 288     }
 289
 290     delete status;
 291     // set the authtype
 292 #ifdef SHIB_APACHE_13
 293     if (r->connection)
 294         r->connection->ap_auth_type = "shibboleth";
 295 #else
 296     r->ap_auth_type = "shibboleth";
 297 #endif
 298     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user: session successfully verified");
 299
 300     // This is code transferred in from the auth check to export the attributes.
 301     // We could even combine the isSessionValid/getAssertions API...?
 302
 303     RM rm(application);
 304     vector<SAMLAssertion*> assertions;
 305     SAMLAuthenticationStatement* sso_statement=NULL;
 306
 307     try {
 308         status = rm.getAssertions(session_id, r->connection->remote_ip, assertions, &sso_statement);
 309     }
 310     catch (ShibTargetException &e) {
 311         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user(): %s", e.what());
 312         markupProcessor.insert("errorType", "Attribute Processing Error");
 313         markupProcessor.insert("errorText", e.what());
 314         markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 315         return shib_error_page(r, application, "rm", markupProcessor);
 316     }
 317 #ifndef _DEBUG
 318     catch (...) {
 319         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user(): caught unexpected error");
 320         markupProcessor.insert("errorType", "Attribute Processing Error");
 321         markupProcessor.insert("errorText", "Unexpected Exception");
 322         markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 323         return shib_error_page(r, application, "rm", markupProcessor);
 324     }
 325 #endif
 326
 327     if (status->isError()) {
 328         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 329             "shib_check_user() getAssertions failed: %s", status->getText());
 330
 331         markupProcessor.insert(*status);
 332         delete status;
 333         return shib_error_page(r, application, "rm", markupProcessor);
 334     }
 335     delete status;
 336
 337     // Do we have an access control plugin?
 338     if (settings.second) {
 339         Locker acllock(settings.second);
 340         if (!settings.second->authorized(assertions)) {
 341             for (int k = 0; k < assertions.size(); k++)
 342                 delete assertions[k];
 343             delete sso_statement;
 344             ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),"shib_check_user(): access control provider denied access");
 345             return shib_error_page(r, application, "access", markupProcessor);
 346         }
 347     }
 348
 349     // Get the AAP providers, which contain the attribute policy info.
 350     Iterator<IAAP*> provs=application->getAAPProviders();
 351
 352     // Clear out the list of mapped attributes
 353     while (provs.hasNext()) {
 354         IAAP* aap=provs.next();
 355         aap->lock();
 356         try {
 357             Iterator<const IAttributeRule*> rules=aap->getAttributeRules();
 358             while (rules.hasNext()) {
 359                 const char* header=rules.next()->getHeader();
 360                 if (header)
 361                     ap_table_unset(r->headers_in,header);
 362             }
 363         }
 364         catch(...) {
 365             aap->unlock();
 366             for (int k = 0; k < assertions.size(); k++)
 367                 delete assertions[k];
 368             delete sso_statement;
 369             ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 370                 "shib_check_user(): caught unexpected error while clearing headers");
 371             markupProcessor.insert("errorType", "Attribute Processing Error");
 372             markupProcessor.insert("errorText", "Unexpected Exception");
 373             markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 374             return shib_error_page(r, application, "rm", markupProcessor);
 375         }
 376         aap->unlock();
 377     }
 378     provs.reset();
 379
 380     // Maybe export the first assertion.
 381     ap_table_unset(r->headers_in,"Shib-Attributes");
 382     pair<bool,bool> exp=pair<bool,bool>(false,false);
 383     if (g_bApacheConf && dc->bExportAssertion==1)
 384         exp.second=exp.first=true;
 385     else if (!g_bApacheConf)
 386         exp=settings.first->getBool("exportAssertion");
 387     if (exp.first && exp.second && assertions.size()) {
 388         string assertion;
 389         RM::serialize(*(assertions[0]), assertion);
 390         ap_table_set(r->headers_in,"Shib-Attributes", assertion.c_str());
 391     }
 392
 393     // Export the SAML AuthnMethod and the origin site name.
 394     ap_table_unset(r->headers_in,"Shib-Origin-Site");
 395     ap_table_unset(r->headers_in,"Shib-Authentication-Method");
 396     if (sso_statement) {
 397         auto_ptr_char os(sso_statement->getSubject()->getNameQualifier());
 398         auto_ptr_char am(sso_statement->getAuthMethod());
 399         ap_table_set(r->headers_in,"Shib-Origin-Site", os.get());
 400         ap_table_set(r->headers_in,"Shib-Authentication-Method", am.get());
 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())
 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     const IPropertySet* sessionProps=application ? application->getPropertySet("Sessions") : NULL;
 491     if (!application || !sessionProps) {
 492         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 493            "shib_post_handler: unable to map request to application session settings, check configuration");
 494         return SERVER_ERROR;
 495     }
 496
 497     // Declare SHIRE object for this request.
 498     SHIRE shire(application);
 499
 500     return shib_handler(r, application, sessionProps, shire);
 501 }
 502
 503 int shib_handler(request_rec* r, const IApplication* application, const IPropertySet* sessionProps, SHIRE& shire)
 504 {
 505     // Prime the pump...
 506     const char* targeturl = ap_construct_url(r->pool,r->unparsed_uri,r);
 507
 508     // Make sure we only process the SHIRE requests.
 509     if (!strstr(targeturl,shire.getShireURL(targeturl)))
 510         return DECLINED;
 511
 512     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_handler() running");
 513
 514     pair<bool,const char*> shib_cookie=sessionProps->getString("cookieName");
 515     pair<bool,const char*> shib_cookie_props=sessionProps->getString("cookieProps");
 516     if (!shib_cookie.first) {
 517         ap_log_rerror(APLOG_MARK,APLOG_CRIT|APLOG_NOERRNO,SH_AP_R(r),
 518             "shib_handler: no cookieName set for %s", application->getId());
 519         return SERVER_ERROR;
 520     }
 521
 522     ShibMLP markupProcessor(application);
 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.second,cookie.c_str(),
 613             shib_cookie_props.first ? shib_cookie_props.second : "; path=/");
 614         ap_table_setn(r->err_headers_out, "Set-Cookie", val);
 615         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_handler() setting cookie: %s", val);
 616
 617         // ... and redirect to the target
 618         ap_table_setn(r->headers_out, "Location", ap_pstrdup(r->pool,elements.second));
 619         return REDIRECT;
 620     }
 621     catch (ShibTargetException &e) {
 622         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_handler() caught exception: %s", e.what());
 623         markupProcessor.insert("errorType", "Session Creation Service Error");
 624         markupProcessor.insert("errorText", e.what());
 625         markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 626         return shib_error_page(r, application, "shire", markupProcessor);
 627     }
 628 #ifndef _DEBUG
 629     catch (...) {
 630         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_handler(): unexpected exception");
 631         markupProcessor.insert("errorType", "Session Creation Service Error");
 632         markupProcessor.insert("errorText", "Unknown Exception");
 633         markupProcessor.insert("errorDesc", "An error occurred while processing your request.");
 634         return shib_error_page(r, application, "shire", markupProcessor);
 635     }
 636 #endif
 637
 638     ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),"shib_handler() server error");
 639     return SERVER_ERROR;
 640 }
 641
 642 static SH_AP_TABLE* groups_for_user(request_rec* r, const char* user, char* grpfile)
 643 {
 644     SH_AP_CONFIGFILE* f;
 645     SH_AP_TABLE* grps=ap_make_table(r->pool,15);
 646     char l[MAX_STRING_LEN];
 647     const char *group_name, *ll, *w;
 648
 649 #ifdef SHIB_APACHE_13
 650     if (!(f=ap_pcfg_openfile(r->pool,grpfile))) {
 651 #else
 652     if (ap_pcfg_openfile(&f,r->pool,grpfile) != APR_SUCCESS) {
 653 #endif
 654         ap_log_rerror(APLOG_MARK,APLOG_DEBUG,SH_AP_R(r),"groups_for_user() could not open group file: %s\n",grpfile);
 655         return NULL;
 656     }
 657
 658     SH_AP_POOL* sp;
 659 #ifdef SHIB_APACHE_13
 660     sp=ap_make_sub_pool(r->pool);
 661 #else
 662     if (apr_pool_create(&sp,r->pool) != APR_SUCCESS) {
 663         ap_log_rerror(APLOG_MARK,APLOG_ERR,0,r,
 664             "groups_for_user() could not create a subpool");
 665         return NULL;
 666     }
 667 #endif
 668
 669     while (!(ap_cfg_getline(l,MAX_STRING_LEN,f))) {
 670         if ((*l=='#') || (!*l))
 671             continue;
 672         ll = l;
 673         ap_clear_pool(sp);
 674
 675         group_name=ap_getword(sp,&ll,':');
 676
 677         while (*ll) {
 678             w=ap_getword_conf(sp,&ll);
 679             if (!strcmp(w,user)) {
 680                 ap_table_setn(grps,ap_pstrdup(r->pool,group_name),"in");
 681                 break;
 682             }
 683         }
 684     }
 685     ap_cfg_closefile(f);
 686     ap_destroy_pool(sp);
 687     return grps;
 688 }
 689
 690 /*
 691  * shib_auth_checker() -- a simple resource manager to
 692  * process the .htaccess settings and copy attributes
 693  * into the HTTP headers.
 694  */
 695 extern "C" int shib_auth_checker(request_rec* r)
 696 {
 697     shib_dir_config* dc=
 698         (shib_dir_config*)ap_get_module_config(r->per_dir_config,&mod_shib);
 699
 700     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() executing");
 701
 702     // Regular access to arbitrary resource...check AuthType
 703     const char* auth_type=ap_auth_type(r);
 704     if (!auth_type || strcasecmp(auth_type,"shibboleth"))
 705         return DECLINED;
 706
 707     ostringstream threadid;
 708     threadid << "[" << getpid() << "] shibrm" << '\0';
 709     saml::NDC ndc(threadid.str().c_str());
 710
 711     // We lock the configuration system for the duration.
 712     IConfig* conf=g_Config->getINI();
 713     Locker locker(conf);
 714
 715     const char* application_id=ap_table_get(r->headers_in,"Shib-Application-ID");
 716     const IApplication* application=NULL;
 717     if (application_id)
 718         application = conf->getApplication(application_id);
 719
 720     // mod_auth clone
 721
 722     int m=r->method_number;
 723     bool method_restricted=false;
 724     const char *t, *w;
 725
 726     const array_header* reqs_arr=ap_requires(r);
 727     if (!reqs_arr)
 728         return OK;
 729
 730     require_line* reqs=(require_line*)reqs_arr->elts;
 731
 732     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"REQUIRE nelts: %d", reqs_arr->nelts);
 733     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"REQUIRE all: %d", dc->bRequireAll);
 734
 735     vector<bool> auth_OK(reqs_arr->nelts,false);
 736
 737 #define SHIB_AP_CHECK_IS_OK {       \
 738      if (dc->bRequireAll < 1)    \
 739          return OK;      \
 740      auth_OK[x] = true;      \
 741      continue;           \
 742 }
 743
 744     for (int x=0; x<reqs_arr->nelts; x++) {
 745         auth_OK[x] = false;
 746         if (!(reqs[x].method_mask & (1 << m)))
 747             continue;
 748         method_restricted=true;
 749
 750         t = reqs[x].requirement;
 751         w = ap_getword_white(r->pool, &t);
 752
 753         if (!strcasecmp(w,"Shibboleth")) {
 754             // This is a dummy rule needed because Apache conflates authn and authz.
 755             // Without some require rule, AuthType is ignored and no check_user hooks run.
 756             SHIB_AP_CHECK_IS_OK;
 757         }
 758         else if (!strcmp(w,"valid-user") && application_id) {
 759             ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() accepting valid-user");
 760             SHIB_AP_CHECK_IS_OK;
 761         }
 762         else if (!strcmp(w,"user") && SH_AP_USER(r)) {
 763             bool regexp=false;
 764             while (*t) {
 765                 w=ap_getword_conf(r->pool,&t);
 766                 if (*w=='~') {
 767                     regexp=true;
 768                     continue;
 769                 }
 770
 771                 if (regexp) {
 772                     try {
 773                         // To do regex matching, we have to convert from UTF-8.
 774                         auto_ptr<XMLCh> trans(fromUTF8(w));
 775                         RegularExpression re(trans.get());
 776                         auto_ptr<XMLCh> trans2(fromUTF8(SH_AP_USER(r)));
 777                         if (re.matches(trans2.get())) {
 778                             ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() accepting user: %s",w);
 779                             SHIB_AP_CHECK_IS_OK;
 780                         }
 781                     }
 782                     catch (XMLException& ex) {
 783                         auto_ptr_char tmp(ex.getMessage());
 784                         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 785                                         "shib_auth_checker caught exception while parsing regular expression (%s): %s",w,tmp.get());
 786                     }
 787                 }
 788                 else if (!strcmp(SH_AP_USER(r),w)) {
 789                     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() accepting user: %s",w);
 790                     SHIB_AP_CHECK_IS_OK;
 791                 }
 792             }
 793         }
 794         else if (!strcmp(w,"group")) {
 795             SH_AP_TABLE* grpstatus=NULL;
 796             if (dc->szAuthGrpFile && SH_AP_USER(r)) {
 797                 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() using groups file: %s\n",dc->szAuthGrpFile);
 798                 grpstatus=groups_for_user(r,SH_AP_USER(r),dc->szAuthGrpFile);
 799             }
 800             if (!grpstatus)
 801                 return DECLINED;
 802
 803             while (*t) {
 804                 w=ap_getword_conf(r->pool,&t);
 805                 if (ap_table_get(grpstatus,w)) {
 806                     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_auth_checker() accepting group: %s",w);
 807                     SHIB_AP_CHECK_IS_OK;
 808                 }
 809             }
 810         }
 811         else {
 812             Iterator<IAAP*> provs=application ? application->getAAPProviders() : EMPTY(IAAP*);
 813             AAP wrapper(provs,w);
 814             if (wrapper.fail()) {
 815                 ap_log_rerror(APLOG_MARK,APLOG_WARNING|APLOG_NOERRNO,SH_AP_R(r),
 816                     "shib_auth_checker() didn't recognize require rule: %s\n",w);
 817                 continue;
 818             }
 819
 820             bool regexp=false;
 821             const char* vals=ap_table_get(r->headers_in,wrapper->getHeader());
 822             while (*t && vals) {
 823                 w=ap_getword_conf(r->pool,&t);
 824                 if (*w=='~') {
 825                     regexp=true;
 826                     continue;
 827                 }
 828
 829                 try {
 830                     auto_ptr<RegularExpression> re;
 831                     if (regexp) {
 832                         delete re.release();
 833                         auto_ptr<XMLCh> trans(fromUTF8(w));
 834                         auto_ptr<RegularExpression> temp(new RegularExpression(trans.get()));
 835                         re=temp;
 836                     }
 837
 838                     string vals_str(vals);
 839                     int j = 0;
 840                     for (int i = 0;  i < vals_str.length();  i++) {
 841                         if (vals_str.at(i) == ';') {
 842                             if (i == 0) {
 843                                 ap_log_rerror(APLOG_MARK,APLOG_WARNING|APLOG_NOERRNO,SH_AP_R(r),
 844                                                 "shib_auth_checker() invalid header encoding %s: starts with semicolon", vals);
 845                                 return SERVER_ERROR;
 846                             }
 847
 848                             if (vals_str.at(i-1) == '\\') {
 849                                 vals_str.erase(i-1, 1);
 850                                 i--;
 851                                 continue;
 852                             }
 853
 854                             string val = vals_str.substr(j, i-j);
 855                             j = i+1;
 856                             if (regexp) {
 857                                 auto_ptr<XMLCh> trans(fromUTF8(val.c_str()));
 858                                 if (re->matches(trans.get())) {
 859                                     ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 860                                                     "shib_auth_checker() expecting %s, got %s: authorization granted", w, val.c_str());
 861                                     SHIB_AP_CHECK_IS_OK;
 862                                 }
 863                             }
 864                             else if (val==w) {
 865                                 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 866                                                 "shib_auth_checker() expecting %s, got %s: authorization granted", w, val.c_str());
 867                                 SHIB_AP_CHECK_IS_OK;
 868                             }
 869                             else {
 870                                 ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 871                                                 "shib_auth_checker() expecting %s, got %s: authorization not granted", w, val.c_str());
 872                             }
 873                         }
 874                     }
 875
 876                     string val = vals_str.substr(j, vals_str.length()-j);
 877                     if (regexp) {
 878                         auto_ptr<XMLCh> trans(fromUTF8(val.c_str()));
 879                         if (re->matches(trans.get())) {
 880                             ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 881                                             "shib_auth_checker() expecting %s, got %s: authorization granted", w, val.c_str());
 882                             SHIB_AP_CHECK_IS_OK;
 883                         }
 884                     }
 885                     else if (val==w) {
 886                         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 887                                         "shib_auth_checker() expecting %s, got %s: authorization granted", w, val.c_str());
 888                         SHIB_AP_CHECK_IS_OK;
 889                     }
 890                     else {
 891                         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),
 892                                         "shib_auth_checker() expecting %s, got %s: authorization not granted", w, val.c_str());
 893                     }
 894                 }
 895                 catch (XMLException& ex) {
 896                     auto_ptr_char tmp(ex.getMessage());
 897                     ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 898                                     "shib_auth_checker caught exception while parsing regular expression (%s): %s",w,tmp.get());
 899                 }
 900             }
 901         }
 902     }
 903
 904     // check if all require directives are true
 905     bool auth_all_OK = true;
 906     for (int i= 0; i<reqs_arr->nelts; i++) {
 907         auth_all_OK &= auth_OK[i];
 908     }
 909     if (auth_all_OK)
 910         return OK;
 911
 912     if (!method_restricted)
 913         return OK;
 914
 915     if (!application_id) {
 916         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 917            "shib_auth_checker: Shib-Application-ID header not found in request");
 918         return HTTP_FORBIDDEN;
 919     }
 920     else if (!application) {
 921         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(r),
 922            "shib_auth_checker: unable to map request to application settings, check configuration");
 923         return HTTP_FORBIDDEN;
 924     }
 925
 926     ShibMLP markupProcessor(application);
 927     markupProcessor.insert("requestURL", ap_construct_url(r->pool,r->unparsed_uri,r));
 928     return shib_error_page(r, application, "access", markupProcessor);
 929 }
 930
 931 /*
 932  * shib_exit()
 933  *  Cleanup the (per-process) pool info.
 934  */
 935 #ifdef SHIB_APACHE_13
 936 extern "C" void shib_exit(server_rec* s, SH_AP_POOL* p)
 937 {
 938 #else
 939 extern "C" apr_status_t shib_exit(void* data)
 940 {
 941     server_rec* s = NULL;
 942 #endif
 943     g_Config->shutdown();
 944     g_Config = NULL;
 945     ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_exit() done");
 946 #ifndef SHIB_APACHE_13
 947     return OK;
 948 #endif
 949 }
 950
 951 static const XMLCh Apache[] =
 952 { chLatin_A, chLatin_p, chLatin_a, chLatin_c, chLatin_h, chLatin_e, chNull };
 953 static const XMLCh apacheConfig[] =
 954 { chLatin_a, chLatin_p, chLatin_a, chLatin_c, chLatin_h, chLatin_e,
 955   chLatin_C, chLatin_o, chLatin_n, chLatin_f, chLatin_i, chLatin_g, chNull
 956 };
 957 static const XMLCh Implementation[] =
 958 { 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 };
 959
 960 /*
 961  * shire_child_init()
 962  *  Things to do when the child process is initialized.
 963  *  (or after the configs are read in apache-2)
 964  */
 965 #ifdef SHIB_APACHE_13
 966 extern "C" void shib_child_init(server_rec* s, SH_AP_POOL* p)
 967 #else
 968 extern "C" int shib_post_config(apr_pool_t* pconf, apr_pool_t* plog,
 969                                 apr_pool_t* ptemp, server_rec* s)
 970 #endif
 971 {
 972     // Initialize runtime components.
 973
 974     ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() starting");
 975
 976     if (g_Config) {
 977         ap_log_error(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init(): already initialized!");
 978 #ifdef SHIB_APACHE_13
 979         exit(1);
 980 #else
 981         return OK;
 982 #endif
 983     }
 984
 985     try {
 986         g_Config=&ShibTargetConfig::getConfig();
 987         g_Config->setFeatures(
 988             ShibTargetConfig::Listener |
 989             ShibTargetConfig::Metadata |
 990             ShibTargetConfig::AAP |
 991             ShibTargetConfig::RequestMapper |
 992             ShibTargetConfig::SHIREExtensions
 993             );
 994         if (!g_Config->init(g_szSchemaDir,g_szSHIBConfig)) {
 995             ap_log_error(APLOG_MARK,APLOG_CRIT|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init(): already initialized!");
 996             exit(1);
 997         }
 998
 999         // Access the implementation-specifics for whether to use old Apache config style...
1000         IConfig* conf=g_Config->getINI();
1001         Locker locker(conf);
1002         const IPropertySet* props=conf->getPropertySet("SHIRE");
1003         if (props) {
1004             const DOMElement* impl=saml::XML::getFirstChildElement(
1005                 props->getElement(),ShibTargetConfig::SHIBTARGET_NS,Implementation
1006                 );
1007             if (impl && (impl=saml::XML::getFirstChildElement(impl,ShibTargetConfig::SHIBTARGET_NS,Apache))) {
1008                 const XMLCh* flag=impl->getAttributeNS(NULL,apacheConfig);
1009                 if (flag && (*flag==chDigit_1 || *flag==chLatin_t))
1010                     g_bApacheConf=true;
1011             }
1012         }
1013     }
1014     catch (...) {
1015         ap_log_error(APLOG_MARK,APLOG_CRIT|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() failed to initialize SHIB Target");
1016         exit (1);
1017     }
1018
1019     // Set the cleanup handler
1020     apr_pool_cleanup_register(pconf, NULL, shib_exit, NULL);
1021
1022     ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),
1023         "shib_child_init() done, apacheConfig set to %s", g_bApacheConf ? "true" : "false");
1024
1025 #ifndef SHIB_APACHE_13
1026     return OK;
1027 #endif
1028 }
1029
1030 #ifdef SHIB_APACHE_13
1031
1032 // SHIB Module commands
1033
1034 static command_rec shire_cmds[] = {
1035   {"SHIREConfig", (config_fn_t)ap_set_global_string_slot, &g_szSHIBConfig,
1036    RSRC_CONF, TAKE1, "Path to shibboleth.xml config file."},
1037   {"ShibConfig", (config_fn_t)ap_set_global_string_slot, &g_szSHIBConfig,
1038    RSRC_CONF, TAKE1, "Path to shibboleth.xml config file."},
1039   {"ShibSchemaDir", (config_fn_t)ap_set_global_string_slot, &g_szSchemaDir,
1040    RSRC_CONF, TAKE1, "Path to Shibboleth XML schema directory."},
1041
1042   {"ShibBasicHijack", (config_fn_t)ap_set_flag_slot,
1043    (void *) XtOffsetOf (shib_dir_config, bBasicHijack),
1044    OR_AUTHCFG, FLAG, "Respond to AuthType Basic and convert to shib?"},
1045   {"ShibRequireSession", (config_fn_t)ap_set_flag_slot,
1046    (void *) XtOffsetOf (shib_dir_config, bRequireSession),
1047    OR_AUTHCFG, FLAG, "Initiates a new session if one does not exist."},
1048   {"ShibExportAssertion", (config_fn_t)ap_set_flag_slot,
1049    (void *) XtOffsetOf (shib_dir_config, bExportAssertion),
1050    OR_AUTHCFG, FLAG, "Export SAML assertion to Shibboleth-defined header?"},
1051   {"AuthGroupFile", (config_fn_t)ap_set_file_slot,
1052    (void *) XtOffsetOf (shib_dir_config, szAuthGrpFile),
1053    OR_AUTHCFG, TAKE1, "text file containing group names and member user IDs"},
1054   {"ShibRequireAll", (config_fn_t)ap_set_flag_slot,
1055    (void *) XtOffsetOf (shib_dir_config, bRequireAll),
1056    OR_AUTHCFG, FLAG, "All require directives must match!"},
1057
1058   {NULL}
1059 };
1060
1061 extern "C"{
1062 handler_rec shib_handlers[] = {
1063   { "shib-shire-post", shib_post_handler },
1064   { NULL }
1065 };
1066
1067 module MODULE_VAR_EXPORT mod_shib = {
1068     STANDARD_MODULE_STUFF,
1069     NULL,                        /* initializer */
1070     create_shib_dir_config,     /* dir config creater */
1071     merge_shib_dir_config,      /* dir merger --- default is to override */
1072     NULL,                       /* server config */
1073     NULL,                       /* merge server config */
1074     shire_cmds,                 /* command table */
1075     shib_handlers,              /* handlers */
1076     NULL,                       /* filename translation */
1077     shib_check_user,            /* check_user_id */
1078     shib_auth_checker,          /* check auth */
1079     NULL,                       /* check access */
1080     NULL,                       /* type_checker */
1081     NULL,                       /* fixups */
1082     NULL,                       /* logger */
1083     NULL,                       /* header parser */
1084     shib_child_init,            /* child_init */
1085     shib_exit,                  /* child_exit */
1086     NULL                        /* post read-request */
1087 };
1088
1089 #elif defined(SHIB_APACHE_20)
1090
1091 extern "C" void shib_register_hooks (apr_pool_t *p)
1092 {
1093   ap_hook_post_config(shib_post_config, NULL, NULL, APR_HOOK_MIDDLE);
1094   ap_hook_check_user_id(shib_check_user, NULL, NULL, APR_HOOK_MIDDLE);
1095   ap_hook_auth_checker(shib_auth_checker, NULL, NULL, APR_HOOK_FIRST);
1096   ap_hook_handler(shib_post_handler, NULL, NULL, APR_HOOK_LAST);
1097 }
1098
1099 // SHIB Module commands
1100
1101 extern "C" {
1102 static command_rec shib_cmds[] = {
1103   AP_INIT_TAKE1("ShibConfig",
1104                 (config_fn_t)ap_set_global_string_slot, &g_szSHIBConfig,
1105                 RSRC_CONF, "Path to shibboleth.xml config file."),
1106   AP_INIT_TAKE1("ShibSchemaDir",
1107      (config_fn_t)ap_set_global_string_slot, &g_szSchemaDir,
1108       RSRC_CONF, "Path to Shibboleth XML schema directory."),
1109
1110   AP_INIT_FLAG("ShibBasicHijack", (config_fn_t)ap_set_flag_slot,
1111                (void *) offsetof (shib_dir_config, bBasicHijack),
1112                OR_AUTHCFG, "Respond to AuthType Basic and convert to shib?"),
1113   AP_INIT_FLAG("ShibRequireSession", (config_fn_t)ap_set_flag_slot,
1114          (void *) offsetof (shib_dir_config, bRequireSession),
1115         OR_AUTHCFG, "Initiates a new session if one does not exist."),
1116   AP_INIT_FLAG("ShibExportAssertion", (config_fn_t)ap_set_flag_slot,
1117          (void *) offsetof (shib_dir_config, bExportAssertion),
1118         OR_AUTHCFG, "Export SAML assertion to Shibboleth-defined header?"),
1119   AP_INIT_TAKE1("AuthGroupFile", (config_fn_t)ap_set_file_slot,
1120                 (void *) offsetof (shib_dir_config, szAuthGrpFile),
1121                 OR_AUTHCFG, "text file containing group names and member user IDs"),
1122   AP_INIT_FLAG("ShibRequireAll", (config_fn_t)ap_set_flag_slot,
1123                (void *) offsetof (shib_dir_config, bRequireAll),
1124                OR_AUTHCFG, "All require directives must match!"),
1125
1126   {NULL}
1127 };
1128
1129 module AP_MODULE_DECLARE_DATA mod_shib = {
1130     STANDARD20_MODULE_STUFF,
1131     create_shib_dir_config,     /* create dir config */
1132     merge_shib_dir_config,      /* merge dir config --- default is to override */
1133     NULL,                       /* create server config */
1134     NULL,                       /* merge server config */
1135     shib_cmds,                  /* command table */
1136     shib_register_hooks         /* register hooks */
1137 };
1138
1139 #else
1140 #error "undefined APACHE version"
1141 #endif
1142
1143 }