src/main/auth.c

   1 /*
   2  * auth.c       User authentication.
   3  *
   4  * Version:     $Id$
   5  *
   6  *   This program is free software; you can redistribute it and/or modify
   7  *   it under the terms of the GNU General Public License as published by
   8  *   the Free Software Foundation; either version 2 of the License, or
   9  *   (at your option) any later version.
  10  *
  11  *   This program is distributed in the hope that it will be useful,
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *   GNU General Public License for more details.
  15  *
  16  *   You should have received a copy of the GNU General Public License
  17  *   along with this program; if not, write to the Free Software
  18  *   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  *
  20  * Copyright 2000,2006  The FreeRADIUS server project
  21  * Copyright 2000  Miquel van Smoorenburg <miquels@cistron.nl>
  22  * Copyright 2000  Jeff Carneal <jeff@apex.net>
  23  */
  24
  25 #include <freeradius-devel/ident.h>
  26 RCSID("$Id$")
  27
  28 #include <freeradius-devel/radiusd.h>
  29 #include <freeradius-devel/modules.h>
  30 #include <freeradius-devel/rad_assert.h>
  31
  32 #include <ctype.h>
  33
  34 /*
  35  *      Return a short string showing the terminal server, port
  36  *      and calling station ID.
  37  */
  38 char *auth_name(char *buf, size_t buflen, REQUEST *request, int do_cli)
  39 {
  40         VALUE_PAIR      *cli;
  41         VALUE_PAIR      *pair;
  42         int             port = 0;
  43         const char      *tls = "";
  44
  45         if ((cli = pairfind(request->packet->vps, PW_CALLING_STATION_ID, 0)) == NULL)
  46                 do_cli = 0;
  47         if ((pair = pairfind(request->packet->vps, PW_NAS_PORT, 0)) != NULL)
  48                 port = pair->vp_integer;
  49
  50         if (request->packet->dst_port == 0) {
  51                 if (pairfind(request->packet->vps, PW_FREERADIUS_PROXIED_TO, 0)) {
  52                         tls = " via TLS tunnel";
  53                 } else {
  54                         tls = " via proxy to virtual server";
  55                 }
  56         }
  57
  58         snprintf(buf, buflen, "from client %.128s port %u%s%.128s%s",
  59                         request->client->shortname, port,
  60                  (do_cli ? " cli " : ""), (do_cli ? (char *)cli->vp_strvalue : ""),
  61                  tls);
  62
  63         return buf;
  64 }
  65
  66
  67
  68 /*
  69  * Make sure user/pass are clean
  70  * and then log them
  71  */
  72 static int rad_authlog(const char *msg, REQUEST *request, int goodpass)
  73 {
  74         int logit;
  75         const char *extra_msg = NULL;
  76         char clean_password[1024];
  77         char clean_username[1024];
  78         char buf[1024];
  79         char extra[1024];
  80         VALUE_PAIR *username = NULL;
  81
  82         if (!request->root->log_auth) {
  83                 return 0;
  84         }
  85
  86         /*
  87          * Get the correct username based on the configured value
  88          */
  89         if (log_stripped_names == 0) {
  90                 username = pairfind(request->packet->vps, PW_USER_NAME, 0);
  91         } else {
  92                 username = request->username;
  93         }
  94
  95         /*
  96          *      Clean up the username
  97          */
  98         if (username == NULL) {
  99                 strcpy(clean_username, "<no User-Name attribute>");
 100         } else {
 101                 fr_print_string((char *)username->vp_strvalue,
 102                                 username->length,
 103                                 clean_username, sizeof(clean_username));
 104         }
 105
 106         /*
 107          *      Clean up the password
 108          */
 109         if (request->root->log_auth_badpass || request->root->log_auth_goodpass) {
 110                 if (!request->password) {
 111                         VALUE_PAIR *auth_type;
 112
 113                         auth_type = pairfind(request->config_items,
 114                                              PW_AUTH_TYPE, 0);
 115                         if (auth_type) {
 116                                 snprintf(clean_password, sizeof(clean_password),
 117                                          "<via Auth-Type = %s>",
 118                                          dict_valnamebyattr(PW_AUTH_TYPE, 0,
 119                                                             auth_type->vp_integer));
 120                         } else {
 121                                 strcpy(clean_password, "<no User-Password attribute>");
 122                         }
 123                 } else if (pairfind(request->packet->vps, PW_CHAP_PASSWORD, 0)) {
 124                         strcpy(clean_password, "<CHAP-Password>");
 125                 } else {
 126                         fr_print_string((char *)request->password->vp_strvalue,
 127                                          request->password->length,
 128                                          clean_password, sizeof(clean_password));
 129                 }
 130         }
 131
 132         if (goodpass) {
 133                 logit = request->root->log_auth_goodpass;
 134                 extra_msg = request->root->auth_goodpass_msg;
 135         } else {
 136                 logit = request->root->log_auth_badpass;
 137                 extra_msg = request->root->auth_badpass_msg;
 138         }
 139
 140         if (extra_msg) {
 141                 extra[0] = ' ';
 142                 radius_xlat(extra + 1, sizeof(extra) - 1, extra_msg, request,
 143                             NULL);
 144         } else {
 145                 *extra = '\0';
 146         }
 147
 148         radlog_request(L_AUTH, 0, request, "%s: [%s%s%s] (%s)%s",
 149                        msg,
 150                        clean_username,
 151                        logit ? "/" : "",
 152                        logit ? clean_password : "",
 153                        auth_name(buf, sizeof(buf), request, 1),
 154                        extra);
 155
 156         return 0;
 157 }
 158
 159 /*
 160  *      Check password.
 161  *
 162  *      Returns:        0  OK
 163  *                      -1 Password fail
 164  *                      -2 Rejected (Auth-Type = Reject, send Port-Message back)
 165  *                      1  End check & return, don't reply
 166  *
 167  *      NOTE: NOT the same as the RLM_ values !
 168  */
 169 static int rad_check_password(REQUEST *request)
 170 {
 171         VALUE_PAIR *auth_type_pair;
 172         VALUE_PAIR *cur_config_item;
 173         int auth_type = -1;
 174         int result;
 175         int auth_type_count = 0;
 176         result = 0;
 177
 178         /*
 179          *      Look for matching check items. We skip the whole lot
 180          *      if the authentication type is PW_AUTHTYPE_ACCEPT or
 181          *      PW_AUTHTYPE_REJECT.
 182          */
 183         cur_config_item = request->config_items;
 184         while(((auth_type_pair = pairfind(cur_config_item, PW_AUTH_TYPE, 0))) != NULL) {
 185                 auth_type = auth_type_pair->vp_integer;
 186                 auth_type_count++;
 187
 188                 RDEBUG2("Found Auth-Type = %s",
 189                         dict_valnamebyattr(PW_AUTH_TYPE, 0, auth_type));
 190                 cur_config_item = auth_type_pair->next;
 191
 192                 if (auth_type == PW_AUTHTYPE_REJECT) {
 193                         RDEBUG2("Auth-Type = Reject, rejecting user");
 194                         return -2;
 195                 }
 196         }
 197
 198         /*
 199          *      Warn if more than one Auth-Type was found, because only the last
 200          *      one found will actually be used.
 201          */
 202         if (( auth_type_count > 1) && (debug_flag)) {
 203                 radlog_request(L_ERR, 0, request, "Warning:  Found %d auth-types on request for user '%s'",
 204                         auth_type_count, request->username->vp_strvalue);
 205         }
 206
 207         /*
 208          *      This means we have a proxy reply or an accept and it wasn't
 209          *      rejected in the above loop. So that means it is accepted and we
 210          *      do no further authentication.
 211          */
 212         if ((auth_type == PW_AUTHTYPE_ACCEPT)
 213 #ifdef WITH_PROXY
 214             || (request->proxy)
 215 #endif
 216             ) {
 217                 RDEBUG2("Auth-Type = Accept, accepting the user");
 218                 return 0;
 219         }
 220
 221         /*
 222          *      Check that Auth-Type has been set, and reject if not.
 223          *
 224          *      Do quick checks to see if Cleartext-Password or Crypt-Password have
 225          *      been set, and complain if so.
 226          */
 227         if (auth_type < 0) {
 228                 if (pairfind(request->config_items, PW_CRYPT_PASSWORD, 0) != NULL) {
 229                         RDEBUG2("WARNING: Please update your configuration, and remove 'Auth-Type = Crypt'");
 230                         RDEBUG2("WARNING: Use the PAP module instead.");
 231                 }
 232                 else if (pairfind(request->config_items, PW_CLEARTEXT_PASSWORD, 0) != NULL) {
 233                         RDEBUG2("WARNING: Please update your configuration, and remove 'Auth-Type = Local'");
 234                         RDEBUG2("WARNING: Use the PAP or CHAP modules instead.");
 235                 }
 236
 237                 /*
 238                  *      The admin hasn't told us how to
 239                  *      authenticate the user, so we reject them!
 240                  *
 241                  *      This is fail-safe.
 242                  */
 243
 244                 RDEBUG2("ERROR: No authenticate method (Auth-Type) found for the request: Rejecting the user");
 245                 return -2;
 246         }
 247
 248         /*
 249          *      See if there is a module that handles
 250          *      this Auth-Type, and turn the RLM_ return
 251          *      status into the values as defined at
 252          *      the top of this function.
 253          */
 254         result = module_authenticate(auth_type, request);
 255         switch (result) {
 256                 /*
 257                  *      An authentication module FAIL
 258                  *      return code, or any return code that
 259                  *      is not expected from authentication,
 260                  *      is the same as an explicit REJECT!
 261                  */
 262                 case RLM_MODULE_FAIL:
 263                 case RLM_MODULE_INVALID:
 264                 case RLM_MODULE_NOOP:
 265                 case RLM_MODULE_NOTFOUND:
 266                 case RLM_MODULE_REJECT:
 267                 case RLM_MODULE_UPDATED:
 268                 case RLM_MODULE_USERLOCK:
 269                 default:
 270                         result = -1;
 271                         break;
 272                 case RLM_MODULE_OK:
 273                         result = 0;
 274                         break;
 275                 case RLM_MODULE_HANDLED:
 276                         result = 1;
 277                         break;
 278         }
 279
 280         return result;
 281 }
 282
 283 /*
 284  *      Post-authentication step processes the response before it is
 285  *      sent to the NAS. It can receive both Access-Accept and Access-Reject
 286  *      replies.
 287  */
 288 int rad_postauth(REQUEST *request)
 289 {
 290         int     result;
 291         int     postauth_type = 0;
 292         VALUE_PAIR *vp;
 293
 294         /*
 295          *      Do post-authentication calls. ignoring the return code.
 296          */
 297         vp = pairfind(request->config_items, PW_POST_AUTH_TYPE, 0);
 298         if (vp) {
 299                 postauth_type = vp->vp_integer;
 300                 RDEBUG2("Using Post-Auth-Type %s",
 301                         dict_valnamebyattr(PW_POST_AUTH_TYPE, 0, postauth_type));
 302         }
 303         result = module_post_auth(postauth_type, request);
 304         switch (result) {
 305                 /*
 306                  *      The module failed, or said to reject the user: Do so.
 307                  */
 308                 case RLM_MODULE_FAIL:
 309                 case RLM_MODULE_INVALID:
 310                 case RLM_MODULE_REJECT:
 311                 case RLM_MODULE_USERLOCK:
 312                 default:
 313                         request->reply->code = PW_AUTHENTICATION_REJECT;
 314                         result = RLM_MODULE_REJECT;
 315                         break;
 316                 /*
 317                  *      The module handled the request, cancel the reply.
 318                  */
 319                 case RLM_MODULE_HANDLED:
 320                         /* FIXME */
 321                         break;
 322                 /*
 323                  *      The module had a number of OK return codes.
 324                  */
 325                 case RLM_MODULE_NOOP:
 326                 case RLM_MODULE_NOTFOUND:
 327                 case RLM_MODULE_OK:
 328                 case RLM_MODULE_UPDATED:
 329                         result = RLM_MODULE_OK;
 330                         break;
 331         }
 332         return result;
 333 }
 334
 335 /*
 336  *      Process and reply to an authentication request
 337  *
 338  *      The return value of this function isn't actually used right now, so
 339  *      it's not entirely clear if it is returning the right things. --Pac.
 340  */
 341 int rad_authenticate(REQUEST *request)
 342 {
 343         VALUE_PAIR      *namepair;
 344 #ifdef WITH_SESSION_MGMT
 345         VALUE_PAIR      *check_item;
 346 #endif
 347         VALUE_PAIR      *auth_item = NULL;
 348         VALUE_PAIR      *module_msg;
 349         VALUE_PAIR      *tmp = NULL;
 350         int             result;
 351         const char      *password;
 352         char            autz_retry = 0;
 353         int             autz_type = 0;
 354
 355         password = "";
 356
 357 #ifdef WITH_PROXY
 358         /*
 359          *      If this request got proxied to another server, we need
 360          *      to check whether it authenticated the request or not.
 361          */
 362         if (request->proxy_reply) {
 363                 switch (request->proxy_reply->code) {
 364                 /*
 365                  *      Reply of ACCEPT means accept, thus set Auth-Type
 366                  *      accordingly.
 367                  */
 368                 case PW_AUTHENTICATION_ACK:
 369                         tmp = radius_paircreate(request,
 370                                                 &request->config_items,
 371                                                 PW_AUTH_TYPE, 0, PW_TYPE_INTEGER);
 372                         if (tmp) tmp->vp_integer = PW_AUTHTYPE_ACCEPT;
 373                         goto authenticate;
 374
 375                 /*
 376                  *      Challenges are punted back to the NAS without any
 377                  *      further processing.
 378                  */
 379                 case PW_ACCESS_CHALLENGE:
 380                         request->reply->code = PW_ACCESS_CHALLENGE;
 381                         return RLM_MODULE_OK;
 382                 /*
 383                  *      ALL other replies mean reject. (this is fail-safe)
 384                  *
 385                  *      Do NOT do any authorization or authentication. They
 386                  *      are being rejected, so we minimize the amount of work
 387                  *      done by the server, by rejecting them here.
 388                  */
 389                 case PW_AUTHENTICATION_REJECT:
 390                         rad_authlog("Login incorrect (Home Server says so)",
 391                                     request, 0);
 392                         request->reply->code = PW_AUTHENTICATION_REJECT;
 393                         return RLM_MODULE_REJECT;
 394
 395                 default:
 396                         rad_authlog("Login incorrect (Home Server failed to respond)",
 397                                     request, 0);
 398                         return RLM_MODULE_REJECT;
 399                 }
 400         }
 401 #endif
 402
 403         /*
 404          *      Get the username from the request.
 405          *
 406          *      Note that namepair MAY be NULL, in which case there
 407          *      is no User-Name attribute in the request.
 408          */
 409         namepair = request->username;
 410
 411         /*
 412          *      Look for, and cache, passwords.
 413          */
 414         if (!request->password) {
 415                 request->password = pairfind(request->packet->vps,
 416                                              PW_USER_PASSWORD, 0);
 417         }
 418
 419         /*
 420          *      Discover which password we want to use.
 421          */
 422         auth_item = request->password;
 423         if (auth_item) {
 424                 password = (const char *)auth_item->vp_strvalue;
 425
 426         } else {
 427                 /*
 428                  *      Maybe there's a CHAP-Password?
 429                  */
 430                 if ((auth_item = pairfind(request->packet->vps,
 431                                           PW_CHAP_PASSWORD, 0)) != NULL) {
 432                         password = "<CHAP-PASSWORD>";
 433
 434                 } else {
 435                         /*
 436                          *      No password we recognize.
 437                          */
 438                         password = "<NO-PASSWORD>";
 439                 }
 440         }
 441         request->password = auth_item;
 442
 443         /*
 444          *      Get the user's authorization information from the database
 445          */
 446 autz_redo:
 447         result = module_authorize(autz_type, request);
 448         switch (result) {
 449                 case RLM_MODULE_NOOP:
 450                 case RLM_MODULE_NOTFOUND:
 451                 case RLM_MODULE_OK:
 452                 case RLM_MODULE_UPDATED:
 453                         break;
 454                 case RLM_MODULE_HANDLED:
 455                         return result;
 456                 case RLM_MODULE_FAIL:
 457                 case RLM_MODULE_INVALID:
 458                 case RLM_MODULE_REJECT:
 459                 case RLM_MODULE_USERLOCK:
 460                 default:
 461                         if ((module_msg = pairfind(request->packet->vps,
 462                                                    PW_MODULE_FAILURE_MESSAGE, 0)) != NULL) {
 463                                 char msg[MAX_STRING_LEN + 16];
 464                                 snprintf(msg, sizeof(msg), "Invalid user (%s)",
 465                                          module_msg->vp_strvalue);
 466                                 rad_authlog(msg,request,0);
 467                         } else {
 468                                 rad_authlog("Invalid user", request, 0);
 469                         }
 470                         request->reply->code = PW_AUTHENTICATION_REJECT;
 471                         return result;
 472         }
 473         if (!autz_retry) {
 474                 tmp = pairfind(request->config_items, PW_AUTZ_TYPE, 0);
 475                 if (tmp) {
 476                         autz_type = tmp->vp_integer;
 477                         RDEBUG2("Using Autz-Type %s",
 478                                 dict_valnamebyattr(PW_AUTZ_TYPE, 0, autz_type));
 479                         autz_retry = 1;
 480                         goto autz_redo;
 481                 }
 482         }
 483
 484         /*
 485          *      If we haven't already proxied the packet, then check
 486          *      to see if we should.  Maybe one of the authorize
 487          *      modules has decided that a proxy should be used. If
 488          *      so, get out of here and send the packet.
 489          */
 490         if (
 491 #ifdef WITH_PROXY
 492             (request->proxy == NULL) &&
 493 #endif
 494             ((tmp = pairfind(request->config_items, PW_PROXY_TO_REALM, 0)) != NULL)) {
 495                 REALM *realm;
 496
 497                 realm = realm_find2(tmp->vp_strvalue);
 498
 499                 /*
 500                  *      Don't authenticate, as the request is going to
 501                  *      be proxied.
 502                  */
 503                 if (realm && realm->auth_pool) {
 504                         return RLM_MODULE_OK;
 505                 }
 506
 507                 /*
 508                  *      Catch users who set Proxy-To-Realm to a LOCAL
 509                  *      realm (sigh).  But don't complain if it is
 510                  *      *the* LOCAL realm.
 511                  */
 512                 if (realm &&(strcmp(realm->name, "LOCAL") != 0)) {
 513                         RDEBUG2("WARNING: You set Proxy-To-Realm = %s, but it is a LOCAL realm!  Cancelling proxy request.", realm->name);
 514                 }
 515
 516                 if (!realm) {
 517                         RDEBUG2("WARNING: You set Proxy-To-Realm = %s, but the realm does not exist!  Cancelling invalid proxy request.", tmp->vp_strvalue);
 518                 }
 519         }
 520
 521 #ifdef WITH_PROXY
 522  authenticate:
 523 #endif
 524
 525         /*
 526          *      Perhaps there is a Stripped-User-Name now.
 527          */
 528         namepair = request->username;
 529
 530         /*
 531          *      Validate the user
 532          */
 533         do {
 534                 result = rad_check_password(request);
 535                 if (result > 0) {
 536                         /* don't reply! */
 537                         return RLM_MODULE_HANDLED;
 538                 }
 539         } while(0);
 540
 541         /*
 542          *      Failed to validate the user.
 543          *
 544          *      We PRESUME that the code which failed will clean up
 545          *      request->reply->vps, to be ONLY the reply items it
 546          *      wants to send back.
 547          */
 548         if (result < 0) {
 549                 RDEBUG2("Failed to authenticate the user.");
 550                 request->reply->code = PW_AUTHENTICATION_REJECT;
 551
 552                 if ((module_msg = pairfind(request->packet->vps,PW_MODULE_FAILURE_MESSAGE, 0)) != NULL){
 553                         char msg[MAX_STRING_LEN+19];
 554
 555                         snprintf(msg, sizeof(msg), "Login incorrect (%s)",
 556                                  module_msg->vp_strvalue);
 557                         rad_authlog(msg, request, 0);
 558                 } else {
 559                         rad_authlog("Login incorrect", request, 0);
 560                 }
 561
 562                 /* double check: maybe the secret is wrong? */
 563                 if ((debug_flag > 1) && (auth_item != NULL) &&
 564                                 (auth_item->attribute == PW_USER_PASSWORD)) {
 565                         uint8_t *p;
 566
 567                         p = (uint8_t *) auth_item->vp_strvalue;
 568                         while (*p) {
 569                                 int size;
 570
 571                                 size = fr_utf8_char(p);
 572                                 if (!size) {
 573                                         log_debug("  WARNING: Unprintable characters in the password.  Double-check the shared secret on the server and the NAS!");
 574                                         break;
 575                                 }
 576                                 p += size;
 577                         }
 578                 }
 579         }
 580
 581 #ifdef WITH_SESSION_MGMT
 582         if (result >= 0 &&
 583             (check_item = pairfind(request->config_items, PW_SIMULTANEOUS_USE, 0)) != NULL) {
 584                 int r, session_type = 0;
 585                 char            logstr[1024];
 586                 char            umsg[MAX_STRING_LEN + 1];
 587                 const char      *user_msg = NULL;
 588
 589                 tmp = pairfind(request->config_items, PW_SESSION_TYPE, 0);
 590                 if (tmp) {
 591                         session_type = tmp->vp_integer;
 592                         RDEBUG2("Using Session-Type %s",
 593                                 dict_valnamebyattr(PW_SESSION_TYPE, 0, session_type));
 594                 }
 595
 596                 /*
 597                  *      User authenticated O.K. Now we have to check
 598                  *      for the Simultaneous-Use parameter.
 599                  */
 600                 if (namepair &&
 601                     (r = module_checksimul(session_type, request, check_item->vp_integer)) != 0) {
 602                         char mpp_ok = 0;
 603
 604                         if (r == 2){
 605                                 /* Multilink attempt. Check if port-limit > simultaneous-use */
 606                                 VALUE_PAIR *port_limit;
 607
 608                                 if ((port_limit = pairfind(request->reply->vps, PW_PORT_LIMIT, 0)) != NULL &&
 609                                         port_limit->vp_integer > check_item->vp_integer){
 610                                         RDEBUG2("MPP is OK");
 611                                         mpp_ok = 1;
 612                                 }
 613                         }
 614                         if (!mpp_ok){
 615                                 if (check_item->vp_integer > 1) {
 616                                 snprintf(umsg, sizeof(umsg),
 617                                                         "\r\nYou are already logged in %d times  - access denied\r\n\n",
 618                                                         (int)check_item->vp_integer);
 619                                         user_msg = umsg;
 620                                 } else {
 621                                         user_msg = "\r\nYou are already logged in - access denied\r\n\n";
 622                                 }
 623
 624                                 request->reply->code = PW_AUTHENTICATION_REJECT;
 625
 626                                 /*
 627                                  *      They're trying to log in too many times.
 628                                  *      Remove ALL reply attributes.
 629                                  */
 630                                 pairfree(&request->reply->vps);
 631                                 radius_pairmake(request, &request->reply->vps,
 632                                                 "Reply-Message",
 633                                                 user_msg, T_OP_SET);
 634
 635                                 snprintf(logstr, sizeof(logstr), "Multiple logins (max %d) %s",
 636                                         check_item->vp_integer,
 637                                         r == 2 ? "[MPP attempt]" : "");
 638                                 rad_authlog(logstr, request, 1);
 639
 640                                 result = -1;
 641                         }
 642                 }
 643         }
 644 #endif
 645
 646         /*
 647          *      Result should be >= 0 here - if not, it means the user
 648          *      is rejected, so we just process post-auth and return.
 649          */
 650         if (result < 0) {
 651                 return RLM_MODULE_REJECT;
 652         }
 653
 654         /*
 655          *      Set the reply to Access-Accept, if it hasn't already
 656          *      been set to something.  (i.e. Access-Challenge)
 657          */
 658         if (request->reply->code == 0)
 659           request->reply->code = PW_AUTHENTICATION_ACK;
 660
 661         if ((module_msg = pairfind(request->packet->vps,PW_MODULE_SUCCESS_MESSAGE, 0)) != NULL){
 662                 char msg[MAX_STRING_LEN+12];
 663
 664                 snprintf(msg, sizeof(msg), "Login OK (%s)",
 665                          module_msg->vp_strvalue);
 666                 rad_authlog(msg, request, 1);
 667         } else {
 668                 rad_authlog("Login OK", request, 1);
 669         }
 670
 671         return result;
 672 }
 673
 674 /*
 675  *      Run a virtual server auth and postauth
 676  *
 677  */
 678 int rad_virtual_server(REQUEST *request)
 679 {
 680         VALUE_PAIR *vp;
 681         int result;
 682
 683         /*
 684          *      We currently only handle AUTH packets here.
 685          *      This could be expanded to handle other packets as well if required.
 686          */
 687         rad_assert(request->packet->code == PW_AUTHENTICATION_REQUEST);
 688
 689         result = rad_authenticate(request);
 690
 691         if (request->reply->code == PW_AUTHENTICATION_REJECT) {
 692                 pairdelete(&request->config_items, PW_POST_AUTH_TYPE, 0);
 693                 vp = radius_pairmake(request, &request->config_items,
 694                                      "Post-Auth-Type", "Reject",
 695                                      T_OP_SET);
 696                 if (vp) rad_postauth(request);
 697         }
 698
 699         if (request->reply->code == PW_AUTHENTICATION_ACK) {
 700                 rad_postauth(request);
 701         }
 702
 703         return result;
 704 }
 705