mod_shire/mod_shire.cpp

   1 /*
   2  * mod_shire.cpp -- the SHIRE Apache Module
   3  *
   4  * Created by:  Derek Atkins <derek@ihtfp.com>
   5  *
   6  * $Id$
   7  */
   8
   9 // Apache specific header files
  10 #include "httpd.h"
  11 #include "http_config.h"
  12 #include "http_protocol.h"
  13 #include "http_main.h"
  14 #include "util_script.h"
  15 #define CORE_PRIVATE
  16 #include "http_core.h"
  17 #include "http_log.h"
  18
  19 // For POST processing from Apache
  20 #include <libapreq/apache_request.h>
  21
  22 #include <unistd.h>
  23
  24 // SAML Runtime
  25 #include <saml.h>
  26 #include <shib.h>
  27 #include <shib-target.h>
  28
  29 #include <fstream>
  30 #include <strstream>
  31 #include <stdexcept>
  32
  33 using namespace std;
  34 using namespace saml;
  35 using namespace shibboleth;
  36 using namespace shibtarget;
  37
  38 extern "C" module MODULE_VAR_EXPORT shire_module;
  39
  40 static char* g_szSHIREConfig = NULL;
  41 static RPCHandle *rpc_handle = NULL;
  42 static ShibTargetConfig * g_szConfig = NULL;
  43
  44 // per-server configuration structure
  45 struct shire_server_config
  46 {
  47     char* szCookieName;         // name of session token
  48     char* szWAYFLocation;       // URL of WAYF service
  49     char* szSHIRELocation;      // URL of SHIRE acceptance point
  50     int bSSLOnly;               // SSL only for this SHIRE?
  51     int bNormalizeRequest;      // normalize requested URL based on server name?
  52 };
  53
  54 // creates the per-server configuration
  55 extern "C" void* create_shire_server_config (pool * p, server_rec * s)
  56 {
  57     shire_server_config* sc=(shire_server_config*)ap_pcalloc(p,sizeof(shire_server_config));
  58     sc->bSSLOnly = -1;
  59     sc->bNormalizeRequest = -1;
  60     return sc;
  61 }
  62
  63 // overrides server configuration in virtual servers
  64 extern "C" void* merge_shire_server_config (pool* p, void* base, void* sub)
  65 {
  66     shire_server_config* sc=(shire_server_config*)ap_pcalloc(p,sizeof(shire_server_config));
  67     shire_server_config* parent=(shire_server_config*)base;
  68     shire_server_config* child=(shire_server_config*)sub;
  69
  70     if (child->szCookieName)
  71         sc->szCookieName=ap_pstrdup(p,child->szCookieName);
  72     else if (parent->szCookieName)
  73         sc->szCookieName=ap_pstrdup(p,parent->szCookieName);
  74     else
  75         sc->szCookieName=NULL;
  76
  77     if (child->szWAYFLocation)
  78         sc->szWAYFLocation=ap_pstrdup(p,child->szWAYFLocation);
  79     else if (parent->szWAYFLocation)
  80         sc->szWAYFLocation=ap_pstrdup(p,parent->szWAYFLocation);
  81     else
  82         sc->szWAYFLocation=NULL;
  83
  84     if (child->szSHIRELocation)
  85         sc->szSHIRELocation=ap_pstrdup(p,child->szSHIRELocation);
  86     else if (parent->szSHIRELocation)
  87         sc->szSHIRELocation=ap_pstrdup(p,parent->szSHIRELocation);
  88     else
  89         sc->szSHIRELocation=NULL;
  90
  91     sc->bSSLOnly=((child->bSSLOnly==-1) ? parent->bSSLOnly : child->bSSLOnly);
  92     sc->bNormalizeRequest=((child->bNormalizeRequest==-1) ? parent->bNormalizeRequest : child->bNormalizeRequest);
  93     return sc;
  94 }
  95
  96 // per-dir module configuration structure
  97 struct shire_dir_config
  98 {
  99     int bBasicHijack;           // activate for AuthType Basic?
 100     int bSSLOnly;               // only over SSL?
 101     int checkIPAddress;         // placeholder for check
 102     SHIREConfig config;         // SHIRE Configuration
 103 };
 104
 105 // creates per-directory config structure
 106 extern "C" void* create_shire_dir_config (pool* p, char* d)
 107 {
 108     shire_dir_config* dc=(shire_dir_config*)ap_pcalloc(p,sizeof(shire_dir_config));
 109     dc->bBasicHijack = -1;
 110     dc->bSSLOnly = -1;
 111     dc->checkIPAddress = -1;
 112     dc->config.lifetime = -1;
 113     dc->config.timeout = -1;
 114     return dc;
 115 }
 116
 117 // overrides server configuration in directories
 118 extern "C" void* merge_shire_dir_config (pool* p, void* base, void* sub)
 119 {
 120     shire_dir_config* dc=(shire_dir_config*)ap_pcalloc(p,sizeof(shire_dir_config));
 121     shire_dir_config* parent=(shire_dir_config*)base;
 122     shire_dir_config* child=(shire_dir_config*)sub;
 123
 124     dc->bSSLOnly=((child->bSSLOnly==-1) ? parent->bSSLOnly : child->bSSLOnly);
 125     dc->bBasicHijack=((child->bBasicHijack==-1) ? parent->bBasicHijack : child->bBasicHijack);
 126     dc->checkIPAddress=((child->checkIPAddress==-1) ? parent->checkIPAddress : child->checkIPAddress);
 127     dc->config.lifetime=((child->config.lifetime==-1) ? parent->config.lifetime : child->config.lifetime);
 128     dc->config.timeout=((child->config.timeout==-1) ? parent->config.timeout : child->config.timeout);
 129     return dc;
 130 }
 131
 132 // generic global slot handlers
 133 extern "C" const char* ap_set_global_string_slot(cmd_parms* parms, void*, const char* arg)
 134 {
 135     *((char**)(parms->info))=ap_pstrdup(parms->pool,arg);
 136     return NULL;
 137 }
 138
 139 // generic per-server slot handlers
 140 extern "C" const char* ap_set_server_string_slot(cmd_parms* parms, void*, const char* arg)
 141 {
 142     char* base=(char*)ap_get_module_config(parms->server->module_config,&shire_module);
 143     int offset=(int)parms->info;
 144     *((char**)(base + offset))=ap_pstrdup(parms->pool,arg);
 145     return NULL;
 146 }
 147
 148 extern "C" const char* set_normalize(cmd_parms* parms, shire_server_config* sc, const char* arg)
 149 {
 150     sc->bNormalizeRequest=atoi(arg);
 151     return NULL;
 152 }
 153
 154 // some shortcuts for directory config slots
 155 extern "C" const char* set_lifetime(cmd_parms* parms, shire_dir_config* dc, const char* arg)
 156 {
 157     dc->config.lifetime=atoi(arg);
 158     return NULL;
 159 }
 160
 161 extern "C" const char* set_timeout(cmd_parms* parms, shire_dir_config* dc, const char* arg)
 162 {
 163     dc->config.timeout=atoi(arg);
 164     return NULL;
 165 }
 166
 167 #ifdef SOLARIS
 168 extern "C"
 169 #endif
 170 typedef const char* (*config_fn_t)(void);
 171
 172 // SHIRE Module commands
 173
 174 static command_rec shire_cmds[] = {
 175   {"SHIREConfig", (config_fn_t)ap_set_global_string_slot, &g_szSHIREConfig,
 176    RSRC_CONF, TAKE1, "Path to SHIRE ini file."},
 177
 178 #if 0
 179   {"SHIRELocation", (config_fn_t)ap_set_server_string_slot,
 180    (void *) XtOffsetOf (shire_server_config, szSHIRELocation),
 181    RSRC_CONF, TAKE1, "URL of SHIRE handle acceptance point."},
 182   {"SHIRESSLOnly", (config_fn_t)ap_set_flag_slot,
 183    (void *) XtOffsetOf (shire_server_config, bSSLOnly),
 184    RSRC_CONF, FLAG, "Require SSL when POSTING to the SHIRE?"},
 185   {"WAYFLocation", (config_fn_t)ap_set_server_string_slot,
 186    (void *) XtOffsetOf (shire_server_config, szWAYFLocation),
 187    RSRC_CONF, TAKE1, "URL of WAYF service."},
 188   {"ShibCookieName", (config_fn_t)ap_set_server_string_slot,
 189    (void *) XtOffsetOf (shire_server_config, szCookieName),
 190    RSRC_CONF, TAKE1, "Name of cookie to use as session token."},
 191   {"ShibNormalizeRequest", (config_fn_t)set_normalize, NULL,
 192    RSRC_CONF, TAKE1, "Normalize/convert browser requests using server name when redirecting."},
 193 #endif
 194
 195   {"ShibBasicHijack", (config_fn_t)ap_set_flag_slot,
 196    (void *) XtOffsetOf (shire_dir_config, bBasicHijack),
 197    OR_AUTHCFG, FLAG, "Respond to AuthType Basic and convert to shib?"},
 198   {"ShibSSLOnly", (config_fn_t)ap_set_flag_slot,
 199    (void *) XtOffsetOf (shire_dir_config, bSSLOnly),
 200    OR_AUTHCFG, FLAG, "Require SSL when accessing a secured directory?"},
 201   {"ShibCheckAddress", (config_fn_t)ap_set_flag_slot,
 202    (void *) XtOffsetOf (shire_dir_config, checkIPAddress),
 203    OR_AUTHCFG, FLAG, "Verify IP address of requester matches token?"},
 204   {"ShibAuthLifetime", (config_fn_t)set_lifetime, NULL,
 205    OR_AUTHCFG, TAKE1, "Lifetime of session in seconds."},
 206   {"ShibAuthTimeout", (config_fn_t)set_timeout, NULL,
 207    OR_AUTHCFG, TAKE1, "Timeout for session in seconds."},
 208
 209   {NULL}
 210 };
 211
 212
 213
 214 /*
 215  * shire_child_init()
 216  *  Things to do when the child process is initialized.
 217  */
 218 extern "C" void shire_child_init(server_rec* s, pool* p)
 219 {
 220     // Initialize runtime components.
 221
 222     if (g_szConfig) {
 223       ap_log_error(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,s,
 224                    "shire_child_init(): already initialized!");
 225       exit (1);
 226     }
 227
 228     try {
 229       g_szConfig = &(ShibTargetConfig::init(SHIBTARGET_SHIRE, g_szSHIREConfig));
 230     } catch (runtime_error& e) {
 231       ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,s,
 232                    "shire_child_init() failed to initialize SHIB Target");
 233       exit (1);
 234     }
 235
 236     // Create the RPC Handle..  Note: this should be per _thread_
 237     // if there is some way to do that reasonably..
 238     rpc_handle = new RPCHandle(SHIB_SHAR_SOCKET, SHIBRPC_PROG, SHIBRPC_VERS_1);
 239
 240     ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,s,"shire_child_init() done");
 241 }
 242
 243
 244 /*
 245  * shire_child_exit()
 246  *  Cleanup.
 247  */
 248 extern "C" void shire_child_exit(server_rec* s, pool* p)
 249 {
 250     delete rpc_handle;
 251     g_szConfig->shutdown();
 252     g_szConfig = NULL;
 253     ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,s,"shire_child_exit() done");
 254 }
 255
 256 inline char hexchar(unsigned short s)
 257 {
 258     return (s<=9) ? ('0' + s) : ('A' + s - 10);
 259 }
 260
 261 static char* url_encode(request_rec* r, const char* s)
 262 {
 263     static char badchars[]="\"\\+<>#%{}|^~[]`;/?:@=&";
 264     char* ret=(char*)ap_palloc(r->pool,sizeof(char)*3*strlen(s)+1);
 265
 266     unsigned long count=0;
 267     for (; *s; s++)
 268     {
 269         if (strchr(badchars,*s)!=NULL || *s<=0x1F || *s>=0x7F)
 270         {
 271             ret[count++]='%';
 272             ret[count++]=hexchar(*s >> 4);
 273             ret[count++]=hexchar(*s & 0x0F);
 274         }
 275         else
 276             ret[count++]=*s;
 277     }
 278     ret[count++]=*s;
 279     return ret;
 280 }
 281
 282 static const char* get_target(request_rec* r, const char* target)
 283 {
 284     shire_server_config* sc=
 285         (shire_server_config*)ap_get_module_config(r->server->module_config,&shire_module);
 286     if (sc->bNormalizeRequest)
 287     {
 288         const char* colon=strchr(target,':');
 289         const char* slash=strchr(colon+3,'/');
 290         const char* second_colon=strchr(colon+3,':');
 291         return ap_pstrcat(r->pool,ap_pstrndup(r->pool,target,colon+3-target),ap_get_server_name(r),
 292                           (second_colon && second_colon < slash) ? second_colon : slash,NULL);
 293     }
 294     return target;
 295 }
 296
 297 static const char* get_shire_location(request_rec* r, const char* target, bool encode)
 298 {
 299   ShibINI& ini = g_szConfig->getINI();
 300   const string& shire_location = ini.get (SHIBTARGET_HTTP, "shire");
 301
 302   const char* shire = shire_location.c_str();
 303
 304   if (*shire != '/') {
 305     if (encode)
 306       return url_encode(r,shire);
 307     else
 308       return ap_pstrdup(r->pool,shire);
 309     }
 310     const char* colon=strchr(target,':');
 311     const char* slash=strchr(colon+3,'/');
 312     if (encode)
 313       return url_encode(r,ap_pstrcat(r->pool,
 314                                      ap_pstrndup(r->pool,target,slash-target),
 315                                      shire,NULL));
 316     else
 317       return ap_pstrcat(r->pool, ap_pstrndup(r->pool,target,slash-target),
 318                         shire, NULL);
 319 }
 320
 321 static bool is_shire_location(request_rec* r, const char* target)
 322 {
 323   const char* shire = get_shire_location(r, target, false);
 324
 325   if (!strstr(target, shire))
 326     return false;
 327
 328   return (!strcmp(target,shire));
 329 }
 330
 331 static int shire_error_page(request_rec* r, const char* filename, ShibMLP& mlp)
 332 {
 333   ifstream infile (filename);
 334   if (!infile) {
 335       ap_log_rerror(APLOG_MARK,APLOG_ERR,r,
 336                     "shire_error_page() cannot open %s", filename);
 337       return SERVER_ERROR;
 338   }
 339
 340   string res = mlp.run(infile);
 341   r->content_type = ap_psprintf(r->pool, "text/html");
 342   ap_send_http_header(r);
 343   ap_rprintf(r, res.c_str());
 344   return DONE;
 345 }
 346
 347 extern "C" int shire_check_user(request_rec* r)
 348 {
 349     ostrstream threadid;
 350     threadid << "[" << getpid() << "] shire" << '\0';
 351     saml::NDC ndc(threadid.str());
 352
 353     ShibINI& ini = g_szConfig->getINI();
 354     ShibMLP markupProcessor;
 355
 356     ap_log_rerror(APLOG_MARK,APLOG_INFO|APLOG_NOERRNO,r,
 357                   "shire_check_user: ENTER");
 358
 359     shire_server_config* sc=
 360         (shire_server_config*)ap_get_module_config(r->server->module_config,&shire_module);
 361     shire_dir_config* dc=
 362         (shire_dir_config*)ap_get_module_config(r->per_dir_config,&shire_module);
 363
 364     const char* targeturl=get_target(r,ap_construct_url(r->pool,r->unparsed_uri,r));
 365
 366     const char * shire_location = get_shire_location(r,targeturl,true);
 367     string shire_url = get_shire_location(r,targeturl,false);
 368     dc->config.checkIPAddress = (dc->checkIPAddress == 1 ? true : false);
 369     SHIRE shire(rpc_handle, dc->config, shire_url);
 370
 371     const string& shib_cookie = ini.get (SHIBTARGET_HTTP, "cookie");
 372     const string& wayfLocation = ini.get (SHIBTARGET_HTTP, "wayfLocation");
 373     const string& wayfError = ini.get (SHIBTARGET_HTTP, "wayfError");
 374
 375     string tag;
 376     bool has_tag = ini.get_tag (SHIBTARGET_HTTP, "supportContact", true, &tag);
 377     markupProcessor.insert ("supportContact", has_tag ? tag : "");
 378     has_tag = ini.get_tag (SHIBTARGET_HTTP, "logoLocation", true, &tag);
 379     markupProcessor.insert ("logoLocation", has_tag ? tag : "");
 380     markupProcessor.insert ("requestURL", targeturl);
 381
 382     if (is_shire_location (r, targeturl)) {
 383       // Process SHIRE POST
 384
 385       ap_log_rerror(APLOG_MARK,APLOG_INFO|APLOG_NOERRNO,r,
 386                     "shire_check_user() Beginning SHIRE POST processing");
 387
 388
 389       try {
 390
 391         // Make sure this is SSL, if it should be
 392         if (sc->bSSLOnly==1 && strcmp(ap_http_method(r),"https"))
 393           throw ShibTargetException (SHIBRPC_OK,
 394                                      "blocked non-SSL access to SHIRE POST processor");
 395
 396         // Make sure this is a POST
 397         if (strcasecmp (r->method, "POST"))
 398           throw ShibTargetException (SHIBRPC_OK,
 399                                      "blocked non-POST to SHIRE POST processor");
 400
 401         // Sure sure this POST is an appropriate content type
 402         const char *ct = ap_table_get (r->headers_in, "Content-type");
 403         if (strcasecmp (ct, "application/x-www-form-urlencoded"))
 404           throw ShibTargetException (SHIBRPC_OK,
 405                                      ap_psprintf(r->pool,
 406                                      "blocked bad content-type to SHIRE POST processor: %s",
 407                                                  ct));
 408
 409         // Make sure the "bytes sent" is a reasonable number
 410         if (r->bytes_sent > 1024*1024) // 1MB?
 411           throw ShibTargetException (SHIBRPC_OK,
 412                                      "blocked too-large a post to SHIRE POST processor");
 413
 414         // Read the posted data
 415         ApacheRequest *ap_req = ApacheRequest_new(r);
 416         int err = ApacheRequest_parse(ap_req);
 417         if (err != OK)
 418           throw ShibTargetException (SHIBRPC_OK,
 419                                      ap_psprintf(r->pool,
 420                                      "ApacheRequest_parse() failed with %d.", err));
 421
 422
 423         // Make sure the target parameter exists
 424         const char *target = ApacheRequest_param(ap_req, "TARGET");
 425         if (!target || *target == '\0')
 426           // invalid post
 427           throw ShibTargetException (SHIBRPC_OK,
 428                                      "SHIRE POST failed to find TARGET");
 429
 430         // Make sure the SAML Response parameter exists
 431         const char *post = ApacheRequest_param(ap_req, "SAMLResponse");
 432         if (!post || *post == '\0')
 433           // invalid post
 434           throw ShibTargetException (SHIBRPC_OK,
 435                                      "SHIRE POST failed to find SAMLResponse");
 436
 437         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,r,
 438               "shire_check_user() Processing POST for target: %s", target);
 439
 440 #if 0 // 2002-09-19
 441         post =
 442           "PFJlc3BvbnNlIHhtbG5zPSJ1cm46b2FzaXM6bmFtZXM6dGM6U0FNTDoxLjA6cHJvdG9jb2wi"
 443           "IHhtbG5zOnNhbWxwPSJ1cm46b2FzaXM6bmFtZXM6dGM6U0FNTDoxLjA6cHJvdG9jb2wiIElz"
 444           "c3VlSW5zdGFudD0iMjAwMi0wOS0xOVQwNTozMDowMFoiIE1ham9yVmVyc2lvbj0iMSIgTWlu"
 445           "b3JWZXJzaW9uPSIwIiBSZWNpcGllbnQ9Imh0dHA6Ly9sb2NhbGhvc3Qvc2hpYmJvbGV0aC9T"
 446           "SElSRSIgUmVzcG9uc2VJRD0iYmI3ZjZmYjQtMmU0YS00YzY1LTgzY2QtYjIyMjQ0OWQwYmY4"
 447           "Ij48U3RhdHVzPjxTdGF0dXNDb2RlIFZhbHVlPSJzYW1scDpTdWNjZXNzIj48L1N0YXR1c0Nv"
 448           "ZGU+PC9TdGF0dXM+PEFzc2VydGlvbiB4bWxucz0idXJuOm9hc2lzOm5hbWVzOnRjOlNBTUw6"
 449           "MS4wOmFzc2VydGlvbiIgQXNzZXJ0aW9uSUQ9IjZhYzUxYTg2LTJhNTgtNDM2My1hZjlkLTQy"
 450           "YjQzYTRhMGNiZSIgSXNzdWVJbnN0YW50PSIyMDAyLTA5LTE5VDA1OjMwOjAwWiIgSXNzdWVy"
 451           "PSJzaGlicHJvZDAuaW50ZXJuZXQyLmVkdSIgTWFqb3JWZXJzaW9uPSIxIiBNaW5vclZlcnNp"
 452           "b249IjAiPjxDb25kaXRpb25zIE5vdEJlZm9yZT0iMjAwMi0wOS0xN1QwMjo1MDowMFoiIE5v"
 453           "dE9uT3JBZnRlcj0iMjAxMC0wOS0xOVQwNjozMDowMFoiPjxBdWRpZW5jZVJlc3RyaWN0aW9u"
 454           "Q29uZGl0aW9uPjxBdWRpZW5jZT5odHRwOi8vbWlkZGxld2FyZS5pbnRlcm5ldDIuZWR1L3No"
 455           "aWJib2xldGgvY2x1YnMvY2x1YnNoaWIvMjAwMi8wNS88L0F1ZGllbmNlPjwvQXVkaWVuY2VS"
 456           "ZXN0cmljdGlvbkNvbmRpdGlvbj48L0NvbmRpdGlvbnM+PEF1dGhlbnRpY2F0aW9uU3RhdGVt"
 457           "ZW50IEF1dGhlbnRpY2F0aW9uSW5zdGFudD0iMjAwMi0wOS0xOVQwNTozMDowMFoiIEF1dGhl"
 458           "bnRpY2F0aW9uTWV0aG9kPSJCYXNpYyI+PFN1YmplY3Q+PE5hbWVJZGVudGlmaWVyIE5hbWVR"
 459           "dWFsaWZpZXI9ImV4YW1wbGUuZWR1Ij40YzBmYjg2Yi01NjQwLTQ1ZTUtOTM3Ny1mNTJkNjhh"
 460           "ZDNiNjQ8L05hbWVJZGVudGlmaWVyPjxTdWJqZWN0Q29uZmlybWF0aW9uPjxDb25maXJtYXRp"
 461           "b25NZXRob2Q+dXJuOm9hc2lzOm5hbWVzOnRjOlNBTUw6MS4wOmNtOkJlYXJlcjwvQ29uZmly"
 462           "bWF0aW9uTWV0aG9kPjwvU3ViamVjdENvbmZpcm1hdGlvbj48L1N1YmplY3Q+PFN1YmplY3RM"
 463           "b2NhbGl0eSBJUEFkZHJlc3M9IjE4LjEwMS4xLjEyIj48L1N1YmplY3RMb2NhbGl0eT48QXV0"
 464           "aG9yaXR5QmluZGluZyBBdXRob3JpdHlLaW5kPSJzYW1scDpBdHRyaWJ1dGVRdWVyeSIgQmlu"
 465           "ZGluZz0idXJuOm9hc2lzOm5hbWVzOnRjOlNBTUw6MS4wOmJpbmRpbmdzOlNPQVAtYmluZGlu"
 466           "ZyIgTG9jYXRpb249Imh0dHBzOi8vc2hpYnByb2QwLmludGVybmV0Mi5lZHUvc2hpYmJvbGV0"
 467           "aC9BQSI+PC9BdXRob3JpdHlCaW5kaW5nPjwvQXV0aGVudGljYXRpb25TdGF0ZW1lbnQ+PC9B"
 468           "c3NlcnRpb24+PC9SZXNwb25zZT4K";
 469 #endif
 470 #if 0 // 2002-09-20
 471         post =
 472           "PFJlc3BvbnNlIHhtbG5zPSJ1cm46b2FzaXM6bmFtZXM6dGM6U0FNTDoxLjA6cHJvdG9jb2wi"
 473           "IHhtbG5zOnNhbWxwPSJ1cm46b2FzaXM6bmFtZXM6dGM6U0FNTDoxLjA6cHJvdG9jb2wiIElz"
 474           "c3VlSW5zdGFudD0iMjAwMi0wOS0yMFQyMzowMDowMFoiIE1ham9yVmVyc2lvbj0iMSIgTWlu"
 475           "b3JWZXJzaW9uPSIwIiBSZWNpcGllbnQ9Imh0dHA6Ly9sb2NhbGhvc3Qvc2hpYmJvbGV0aC9T"
 476           "SElSRSIgUmVzcG9uc2VJRD0iYmI3ZjZmYjQtMmU0YS00YzY1LTgzY2QtYjIyMjQ0OWQwYmY4"
 477           "Ij48U3RhdHVzPjxTdGF0dXNDb2RlIFZhbHVlPSJzYW1scDpTdWNjZXNzIj48L1N0YXR1c0Nv"
 478           "ZGU+PC9TdGF0dXM+PEFzc2VydGlvbiB4bWxucz0idXJuOm9hc2lzOm5hbWVzOnRjOlNBTUw6"
 479           "MS4wOmFzc2VydGlvbiIgQXNzZXJ0aW9uSUQ9IjZhYzUxYTg2LTJhNTgtNDM2My1hZjlkLTQy"
 480           "YjQzYTRhMGNiZSIgSXNzdWVJbnN0YW50PSIyMDAyLTA5LTIwVDIzOjAwOjAwWiIgSXNzdWVy"
 481           "PSJzaGlicHJvZDAuaW50ZXJuZXQyLmVkdSIgTWFqb3JWZXJzaW9uPSIxIiBNaW5vclZlcnNp"
 482           "b249IjAiPjxDb25kaXRpb25zIE5vdEJlZm9yZT0iMjAwMi0wOS0xN1QwMjo1MDowMFoiIE5v"
 483           "dE9uT3JBZnRlcj0iMjAxMC0wOS0xOVQwNjozMDowMFoiPjxBdWRpZW5jZVJlc3RyaWN0aW9u"
 484           "Q29uZGl0aW9uPjxBdWRpZW5jZT5odHRwOi8vbWlkZGxld2FyZS5pbnRlcm5ldDIuZWR1L3No"
 485           "aWJib2xldGgvY2x1YnMvY2x1YnNoaWIvMjAwMi8wNS88L0F1ZGllbmNlPjwvQXVkaWVuY2VS"
 486           "ZXN0cmljdGlvbkNvbmRpdGlvbj48L0NvbmRpdGlvbnM+PEF1dGhlbnRpY2F0aW9uU3RhdGVt"
 487           "ZW50IEF1dGhlbnRpY2F0aW9uSW5zdGFudD0iMjAwMi0wOS0yMFQyMzowMDowMFoiIEF1dGhl"
 488           "bnRpY2F0aW9uTWV0aG9kPSJCYXNpYyI+PFN1YmplY3Q+PE5hbWVJZGVudGlmaWVyIE5hbWVR"
 489           "dWFsaWZpZXI9ImV4YW1wbGUuZWR1Ij40YzBmYjg2Yi01NjQwLTQ1ZTUtOTM3Ny1mNTJkNjhh"
 490           "ZDNiNjQ8L05hbWVJZGVudGlmaWVyPjxTdWJqZWN0Q29uZmlybWF0aW9uPjxDb25maXJtYXRp"
 491           "b25NZXRob2Q+dXJuOm9hc2lzOm5hbWVzOnRjOlNBTUw6MS4wOmNtOkJlYXJlcjwvQ29uZmly"
 492           "bWF0aW9uTWV0aG9kPjwvU3ViamVjdENvbmZpcm1hdGlvbj48L1N1YmplY3Q+PFN1YmplY3RM"
 493           "b2NhbGl0eSBJUEFkZHJlc3M9IjE4LjEwMS4xLjEyIj48L1N1YmplY3RMb2NhbGl0eT48QXV0"
 494           "aG9yaXR5QmluZGluZyBBdXRob3JpdHlLaW5kPSJzYW1scDpBdHRyaWJ1dGVRdWVyeSIgQmlu"
 495           "ZGluZz0idXJuOm9hc2lzOm5hbWVzOnRjOlNBTUw6MS4wOmJpbmRpbmdzOlNPQVAtYmluZGlu"
 496           "ZyIgTG9jYXRpb249Imh0dHBzOi8vc2hpYnByb2QwLmludGVybmV0Mi5lZHUvc2hpYmJvbGV0"
 497           "aC9BQSI+PC9BdXRob3JpdHlCaW5kaW5nPjwvQXV0aGVudGljYXRpb25TdGF0ZW1lbnQ+PC9B"
 498           "c3NlcnRpb24+PC9SZXNwb25zZT4K";
 499 #endif
 500
 501         // process the post
 502         string cookie;
 503         RPCError* status = shire.sessionCreate(post, r->connection->remote_ip, cookie);
 504
 505         if (status->isError()) {
 506           ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,r,
 507                         "shire_check_user() POST process failed (%d): %s",
 508                         status->status, status->error_msg.c_str());
 509
 510           if (status->isRetryable()) {
 511             ap_log_rerror(APLOG_MARK,APLOG_INFO|APLOG_NOERRNO,r,
 512                           "shire_check_user() Retrying POST by redirecting to WAYF");
 513
 514             char* wayf=ap_pstrcat(r->pool,wayfLocation.c_str(),
 515                                   "?shire=",shire_location,
 516                                   "&target=",url_encode(r,target),NULL);
 517             ap_table_setn(r->headers_out,"Location",wayf);
 518             delete status;
 519             return REDIRECT;
 520           }
 521
 522           // return this error to the user.
 523           markupProcessor.insert (*status);
 524           delete status;
 525           return shire_error_page (r, wayfError.c_str(), markupProcessor);
 526         }
 527         delete status;
 528
 529         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,r,
 530                       "shire_check_user() POST process succeeded.  New cookie: %s",
 531                       cookie.c_str());
 532
 533         // We've got a good session, set the cookie...
 534         char * domain = NULL;
 535         char * new_cookie = ap_psprintf(r->pool, "%s=%s; path=/%s%s",
 536                                         shib_cookie.c_str(),
 537                                         cookie.c_str(),
 538                                         (domain ? "; domain=" : ""),
 539                                         (domain ? domain : ""));
 540
 541         ap_table_setn(r->err_headers_out, "Set-Cookie", new_cookie);
 542         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,r,
 543                       "shire_check_user() Set cookie: %s", new_cookie);
 544
 545         // ... and redirect to the target
 546         char* redir=ap_pstrcat(r->pool,url_encode(r,target),NULL);
 547         ap_table_setn(r->headers_out, "Location", target);
 548         return REDIRECT;
 549
 550       } catch (ShibTargetException &e) {
 551         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,r,
 552                       "shire_check_user(): %s", e.what());
 553
 554         markupProcessor.insert ("errorType", "SHIRE Processing Error");
 555         markupProcessor.insert ("errorText", e.what());
 556         return shire_error_page (r, wayfError.c_str(), markupProcessor);
 557       }
 558
 559       /**************************************************************************/
 560
 561     } else {
 562       // Regular access to arbitrary resource...check AuthType
 563
 564       const char *auth_type=ap_auth_type (r);
 565       if (!auth_type)
 566         return DECLINED;
 567
 568       if (strcasecmp(auth_type,"shibboleth"))
 569       {
 570         if (!strcasecmp(auth_type,"basic") && dc->bBasicHijack==1)
 571         {
 572           core_dir_config* conf=
 573             (core_dir_config*)ap_get_module_config(r->per_dir_config,
 574                                                    ap_find_linked_module("http_core.c"));
 575           conf->ap_auth_type="shibboleth";
 576         }
 577         else
 578           return DECLINED;
 579       }
 580
 581       ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,r,
 582                     "shire_check_user() Shib check for %s", targeturl);
 583
 584       // SSL check.
 585       if (dc->bSSLOnly==1 && strcmp(ap_http_method(r),"https"))
 586       {
 587         ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,r,
 588                       "shire_check_user() blocked non-SSL access");
 589         return SERVER_ERROR;
 590       }
 591
 592       // We're in charge, so check for cookie.
 593       const char* session_id=NULL;
 594       const char* cookies=ap_table_get(r->headers_in,"Cookie");
 595
 596       if (cookies)
 597         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,r,
 598                       "shire_check_user() cookies found: %s",
 599                       cookies);
 600
 601       if (!cookies || !(session_id=strstr(cookies,shib_cookie.c_str())))
 602       {
 603         // No cookie.  Redirect to WAYF.
 604         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,r,
 605                       "shire_check_user() no cookie found -- redirecting to WAYF");
 606         char* wayf=ap_pstrcat(r->pool,wayfLocation.c_str(),
 607                               "?shire=",shire_location,
 608                               "&target=",url_encode(r,targeturl),NULL);
 609         ap_table_setn(r->headers_out,"Location",wayf);
 610         return REDIRECT;
 611       }
 612
 613       // Yep, we found a cookie -- pull it out (our session_id)
 614       session_id+=strlen(shib_cookie.c_str()) + 1;      /* Skip over the '=' */
 615       char* cookiebuf = ap_pstrdup(r->pool,session_id);
 616       char* cookieend = strchr(cookiebuf,';');
 617       if (cookieend)
 618         *cookieend = '\0';      /* Ignore anyting after a ; */
 619       session_id=cookiebuf;
 620
 621       // Make sure this session is still valid
 622       RPCError* status = shire.sessionIsValid(session_id, r->connection->remote_ip);
 623
 624       // Check the status
 625       if (status->isError()) {
 626
 627         ap_log_rerror(APLOG_MARK,APLOG_INFO|APLOG_NOERRNO,r,
 628                       "shire_check_user() session invalid: %s",
 629                       status->error_msg.c_str());
 630
 631         // Oops, session is invalid.  Redirect to WAYF.
 632         char* wayf=ap_pstrcat(r->pool,wayfLocation.c_str(),
 633                               "?shire=",shire_location,
 634                               "&target=",url_encode(r,targeturl),NULL);
 635         ap_table_setn(r->headers_out,"Location",wayf);
 636
 637         delete status;
 638         return REDIRECT;
 639
 640       } else {
 641         delete status;
 642         ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,r,
 643                       "shire_check_user() success");
 644         return OK;
 645       }
 646     }
 647
 648     ap_log_rerror(APLOG_MARK,APLOG_ERR|APLOG_NOERRNO,r,
 649                   "shire_check_user() server error");
 650     return SERVER_ERROR;
 651 }
 652
 653 extern "C"{
 654 module MODULE_VAR_EXPORT shire_module = {
 655     STANDARD_MODULE_STUFF,
 656     NULL,                       /* initializer */
 657     create_shire_dir_config,    /* dir config creater */
 658     merge_shire_dir_config,     /* dir merger --- default is to override */
 659     create_shire_server_config, /* server config */
 660     merge_shire_server_config,  /* merge server config */
 661     shire_cmds,                 /* command table */
 662     NULL,                       /* handlers */
 663     NULL,                       /* filename translation */
 664     shire_check_user,           /* check_user_id */
 665     NULL,                       /* check auth */
 666     NULL,                       /* check access */
 667     NULL,                       /* type_checker */
 668     NULL,                       /* fixups */
 669     NULL,                       /* logger */
 670     NULL,                       /* header parser */
 671     shire_child_init,           /* child_init */
 672     shire_child_exit,           /* child_exit */
 673     NULL                        /* post read-request */
 674 };
 675 }