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         if (( auth_type_count > 1) && (debug_flag)) {
 199                 radlog_request(L_ERR, 0, request, "Warning:  Found %d auth-types on request for user '%s'",
 200                         auth_type_count, request->username->vp_strvalue);
 201         }
 202
 203         /*
 204          *      This means we have a proxy reply or an accept
 205          *  and it wasn't rejected in the above loop.  So
 206          *  that means it is accepted and we do no further
 207          *  authentication
 208          */
 209         if ((auth_type == PW_AUTHTYPE_ACCEPT)
 210 #ifdef WITH_PROXY
 211             || (request->proxy)
 212 #endif
 213             ) {
 214                 RDEBUG2("Auth-Type = Accept, accepting the user");
 215                 return 0;
 216         }
 217
 218         /*
 219          *      Check that Auth-Type has been set, and reject if not.
 220          *
 221          *      Do quick checks to see if Cleartext-Password or Crypt-Password have
 222          *      been set, and complain if so.
 223          */
 224         if (auth_type < 0) {
 225                 if (pairfind(request->config_items, PW_CRYPT_PASSWORD, 0) != NULL) {
 226                         RDEBUG2("WARNING: Please update your configuration, and remove 'Auth-Type = Crypt'");
 227                         RDEBUG2("WARNING: Use the PAP module instead.");
 228                 }
 229                 else if (pairfind(request->config_items, PW_CLEARTEXT_PASSWORD, 0) != NULL) {
 230                         RDEBUG2("WARNING: Please update your configuration, and remove 'Auth-Type = Local'");
 231                         RDEBUG2("WARNING: Use the PAP or CHAP modules instead.");
 232                 }
 233
 234                 /*
 235                  *      The admin hasn't told us how to
 236                  *      authenticate the user, so we reject them!
 237                  *
 238                  *      This is fail-safe.
 239                  */
 240
 241                 RDEBUG2("ERROR: No authenticate method (Auth-Type) found for the request: Rejecting the user");
 242                 return -2;
 243         }
 244
 245         /*
 246          *      See if there is a module that handles
 247          *      this Auth-Type, and turn the RLM_ return
 248          *      status into the values as defined at
 249          *      the top of this function.
 250          */
 251         result = module_authenticate(auth_type, request);
 252         switch (result) {
 253                 /*
 254                  *      An authentication module FAIL
 255                  *      return code, or any return code that
 256                  *      is not expected from authentication,
 257                  *      is the same as an explicit REJECT!
 258                  */
 259                 case RLM_MODULE_FAIL:
 260                 case RLM_MODULE_INVALID:
 261                 case RLM_MODULE_NOOP:
 262                 case RLM_MODULE_NOTFOUND:
 263                 case RLM_MODULE_REJECT:
 264                 case RLM_MODULE_UPDATED:
 265                 case RLM_MODULE_USERLOCK:
 266                 default:
 267                         result = -1;
 268                         break;
 269                 case RLM_MODULE_OK:
 270                         result = 0;
 271                         break;
 272                 case RLM_MODULE_HANDLED:
 273                         result = 1;
 274                         break;
 275         }
 276
 277         return result;
 278 }
 279
 280 /*
 281  *      Post-authentication step processes the response before it is
 282  *      sent to the NAS. It can receive both Access-Accept and Access-Reject
 283  *      replies.
 284  */
 285 int rad_postauth(REQUEST *request)
 286 {
 287         int     result;
 288         int     postauth_type = 0;
 289         VALUE_PAIR *vp;
 290
 291         /*
 292          *      Do post-authentication calls. ignoring the return code.
 293          */
 294         vp = pairfind(request->config_items, PW_POST_AUTH_TYPE, 0);
 295         if (vp) {
 296                 postauth_type = vp->vp_integer;
 297                 RDEBUG2("Using Post-Auth-Type %s",
 298                         dict_valnamebyattr(PW_POST_AUTH_TYPE, 0, postauth_type));
 299         }
 300         result = module_post_auth(postauth_type, request);
 301         switch (result) {
 302                 /*
 303                  *      The module failed, or said to reject the user: Do so.
 304                  */
 305                 case RLM_MODULE_FAIL:
 306                 case RLM_MODULE_INVALID:
 307                 case RLM_MODULE_REJECT:
 308                 case RLM_MODULE_USERLOCK:
 309                 default:
 310                         request->reply->code = PW_AUTHENTICATION_REJECT;
 311                         result = RLM_MODULE_REJECT;
 312                         break;
 313                 /*
 314                  *      The module handled the request, cancel the reply.
 315                  */
 316                 case RLM_MODULE_HANDLED:
 317                         /* FIXME */
 318                         break;
 319                 /*
 320                  *      The module had a number of OK return codes.
 321                  */
 322                 case RLM_MODULE_NOOP:
 323                 case RLM_MODULE_NOTFOUND:
 324                 case RLM_MODULE_OK:
 325                 case RLM_MODULE_UPDATED:
 326                         result = RLM_MODULE_OK;
 327                         break;
 328         }
 329         return result;
 330 }
 331
 332 /*
 333  *      Process and reply to an authentication request
 334  *
 335  *      The return value of this function isn't actually used right now, so
 336  *      it's not entirely clear if it is returning the right things. --Pac.
 337  */
 338 int rad_authenticate(REQUEST *request)
 339 {
 340         VALUE_PAIR      *namepair;
 341 #ifdef WITH_SESSION_MGMT
 342         VALUE_PAIR      *check_item;
 343 #endif
 344         VALUE_PAIR      *auth_item = NULL;
 345         VALUE_PAIR      *module_msg;
 346         VALUE_PAIR      *tmp = NULL;
 347         int             result;
 348         const char      *password;
 349         char            autz_retry = 0;
 350         int             autz_type = 0;
 351
 352         password = "";
 353
 354 #ifdef WITH_PROXY
 355         /*
 356          *      If this request got proxied to another server, we need
 357          *      to check whether it authenticated the request or not.
 358          */
 359         if (request->proxy_reply) {
 360                 switch (request->proxy_reply->code) {
 361                 /*
 362                  *      Reply of ACCEPT means accept, thus set Auth-Type
 363                  *      accordingly.
 364                  */
 365                 case PW_AUTHENTICATION_ACK:
 366                         tmp = radius_paircreate(request,
 367                                                 &request->config_items,
 368                                                 PW_AUTH_TYPE, 0, PW_TYPE_INTEGER);
 369                         if (tmp) tmp->vp_integer = PW_AUTHTYPE_ACCEPT;
 370                         goto authenticate;
 371
 372                 /*
 373                  *      Challenges are punted back to the NAS without any
 374                  *      further processing.
 375                  */
 376                 case PW_ACCESS_CHALLENGE:
 377                         request->reply->code = PW_ACCESS_CHALLENGE;
 378                         return RLM_MODULE_OK;
 379                 /*
 380                  *      ALL other replies mean reject. (this is fail-safe)
 381                  *
 382                  *      Do NOT do any authorization or authentication. They
 383                  *      are being rejected, so we minimize the amount of work
 384                  *      done by the server, by rejecting them here.
 385                  */
 386                 case PW_AUTHENTICATION_REJECT:
 387                         rad_authlog("Login incorrect (Home Server says so)",
 388                                     request, 0);
 389                         request->reply->code = PW_AUTHENTICATION_REJECT;
 390                         return RLM_MODULE_REJECT;
 391
 392                 default:
 393                         rad_authlog("Login incorrect (Home Server failed to respond)",
 394                                     request, 0);
 395                         return RLM_MODULE_REJECT;
 396                 }
 397         }
 398 #endif
 399
 400         /*
 401          *      Get the username from the request.
 402          *
 403          *      Note that namepair MAY be NULL, in which case there
 404          *      is no User-Name attribute in the request.
 405          */
 406         namepair = request->username;
 407
 408         /*
 409          *      Look for, and cache, passwords.
 410          */
 411         if (!request->password) {
 412                 request->password = pairfind(request->packet->vps,
 413                                              PW_USER_PASSWORD, 0);
 414         }
 415
 416         /*
 417          *      Discover which password we want to use.
 418          */
 419         auth_item = request->password;
 420         if (auth_item) {
 421                 password = (const char *)auth_item->vp_strvalue;
 422
 423         } else {
 424                 /*
 425                  *      Maybe there's a CHAP-Password?
 426                  */
 427                 if ((auth_item = pairfind(request->packet->vps,
 428                                           PW_CHAP_PASSWORD, 0)) != NULL) {
 429                         password = "<CHAP-PASSWORD>";
 430
 431                 } else {
 432                         /*
 433                          *      No password we recognize.
 434                          */
 435                         password = "<NO-PASSWORD>";
 436                 }
 437         }
 438         request->password = auth_item;
 439
 440         /*
 441          *      Get the user's authorization information from the database
 442          */
 443 autz_redo:
 444         result = module_authorize(autz_type, request);
 445         switch (result) {
 446                 case RLM_MODULE_NOOP:
 447                 case RLM_MODULE_NOTFOUND:
 448                 case RLM_MODULE_OK:
 449                 case RLM_MODULE_UPDATED:
 450                         break;
 451                 case RLM_MODULE_HANDLED:
 452                         return result;
 453                 case RLM_MODULE_FAIL:
 454                 case RLM_MODULE_INVALID:
 455                 case RLM_MODULE_REJECT:
 456                 case RLM_MODULE_USERLOCK:
 457                 default:
 458                         if ((module_msg = pairfind(request->packet->vps,
 459                                                    PW_MODULE_FAILURE_MESSAGE, 0)) != NULL) {
 460                                 char msg[MAX_STRING_LEN + 16];
 461                                 snprintf(msg, sizeof(msg), "Invalid user (%s)",
 462                                          module_msg->vp_strvalue);
 463                                 rad_authlog(msg,request,0);
 464                         } else {
 465                                 rad_authlog("Invalid user", request, 0);
 466                         }
 467                         request->reply->code = PW_AUTHENTICATION_REJECT;
 468                         return result;
 469         }
 470         if (!autz_retry) {
 471                 tmp = pairfind(request->config_items, PW_AUTZ_TYPE, 0);
 472                 if (tmp) {
 473                         autz_type = tmp->vp_integer;
 474                         RDEBUG2("Using Autz-Type %s",
 475                                 dict_valnamebyattr(PW_AUTZ_TYPE, 0, autz_type));
 476                         autz_retry = 1;
 477                         goto autz_redo;
 478                 }
 479         }
 480
 481         /*
 482          *      If we haven't already proxied the packet, then check
 483          *      to see if we should.  Maybe one of the authorize
 484          *      modules has decided that a proxy should be used. If
 485          *      so, get out of here and send the packet.
 486          */
 487         if (
 488 #ifdef WITH_PROXY
 489             (request->proxy == NULL) &&
 490 #endif
 491             ((tmp = pairfind(request->config_items, PW_PROXY_TO_REALM, 0)) != NULL)) {
 492                 REALM *realm;
 493
 494                 realm = realm_find2(tmp->vp_strvalue);
 495
 496                 /*
 497                  *      Don't authenticate, as the request is going to
 498                  *      be proxied.
 499                  */
 500                 if (realm && realm->auth_pool) {
 501                         return RLM_MODULE_OK;
 502                 }
 503
 504                 /*
 505                  *      Catch users who set Proxy-To-Realm to a LOCAL
 506                  *      realm (sigh).  But don't complain if it is
 507                  *      *the* LOCAL realm.
 508                  */
 509                 if (realm &&(strcmp(realm->name, "LOCAL") != 0)) {
 510                         RDEBUG2("WARNING: You set Proxy-To-Realm = %s, but it is a LOCAL realm!  Cancelling proxy request.", realm->name);
 511                 }
 512
 513                 if (!realm) {
 514                         RDEBUG2("WARNING: You set Proxy-To-Realm = %s, but the realm does not exist!  Cancelling invalid proxy request.", tmp->vp_strvalue);
 515                 }
 516         }
 517
 518 #ifdef WITH_PROXY
 519  authenticate:
 520 #endif
 521
 522         /*
 523          *      Perhaps there is a Stripped-User-Name now.
 524          */
 525         namepair = request->username;
 526
 527         /*
 528          *      Validate the user
 529          */
 530         do {
 531                 result = rad_check_password(request);
 532                 if (result > 0) {
 533                         /* don't reply! */
 534                         return RLM_MODULE_HANDLED;
 535                 }
 536         } while(0);
 537
 538         /*
 539          *      Failed to validate the user.
 540          *
 541          *      We PRESUME that the code which failed will clean up
 542          *      request->reply->vps, to be ONLY the reply items it
 543          *      wants to send back.
 544          */
 545         if (result < 0) {
 546                 RDEBUG2("Failed to authenticate the user.");
 547                 request->reply->code = PW_AUTHENTICATION_REJECT;
 548
 549                 if ((module_msg = pairfind(request->packet->vps,PW_MODULE_FAILURE_MESSAGE, 0)) != NULL){
 550                         char msg[MAX_STRING_LEN+19];
 551
 552                         snprintf(msg, sizeof(msg), "Login incorrect (%s)",
 553                                  module_msg->vp_strvalue);
 554                         rad_authlog(msg, request, 0);
 555                 } else {
 556                         rad_authlog("Login incorrect", request, 0);
 557                 }
 558
 559                 /* double check: maybe the secret is wrong? */
 560                 if ((debug_flag > 1) && (auth_item != NULL) &&
 561                                 (auth_item->attribute == PW_USER_PASSWORD)) {
 562                         uint8_t *p;
 563
 564                         p = (uint8_t *) auth_item->vp_strvalue;
 565                         while (*p) {
 566                                 int size;
 567
 568                                 size = fr_utf8_char(p);
 569                                 if (!size) {
 570                                         log_debug("  WARNING: Unprintable characters in the password.  Double-check the shared secret on the server and the NAS!");
 571                                         break;
 572                                 }
 573                                 p += size;
 574                         }
 575                 }
 576         }
 577
 578 #ifdef WITH_SESSION_MGMT
 579         if (result >= 0 &&
 580             (check_item = pairfind(request->config_items, PW_SIMULTANEOUS_USE, 0)) != NULL) {
 581                 int r, session_type = 0;
 582                 char            logstr[1024];
 583                 char            umsg[MAX_STRING_LEN + 1];
 584                 const char      *user_msg = NULL;
 585
 586                 tmp = pairfind(request->config_items, PW_SESSION_TYPE, 0);
 587                 if (tmp) {
 588                         session_type = tmp->vp_integer;
 589                         RDEBUG2("Using Session-Type %s",
 590                                 dict_valnamebyattr(PW_SESSION_TYPE, 0, session_type));
 591                 }
 592
 593                 /*
 594                  *      User authenticated O.K. Now we have to check
 595                  *      for the Simultaneous-Use parameter.
 596                  */
 597                 if (namepair &&
 598                     (r = module_checksimul(session_type, request, check_item->vp_integer)) != 0) {
 599                         char mpp_ok = 0;
 600
 601                         if (r == 2){
 602                                 /* Multilink attempt. Check if port-limit > simultaneous-use */
 603                                 VALUE_PAIR *port_limit;
 604
 605                                 if ((port_limit = pairfind(request->reply->vps, PW_PORT_LIMIT, 0)) != NULL &&
 606                                         port_limit->vp_integer > check_item->vp_integer){
 607                                         RDEBUG2("MPP is OK");
 608                                         mpp_ok = 1;
 609                                 }
 610                         }
 611                         if (!mpp_ok){
 612                                 if (check_item->vp_integer > 1) {
 613                                 snprintf(umsg, sizeof(umsg),
 614                                                         "\r\nYou are already logged in %d times  - access denied\r\n\n",
 615                                                         (int)check_item->vp_integer);
 616                                         user_msg = umsg;
 617                                 } else {
 618                                         user_msg = "\r\nYou are already logged in - access denied\r\n\n";
 619                                 }
 620
 621                                 request->reply->code = PW_AUTHENTICATION_REJECT;
 622
 623                                 /*
 624                                  *      They're trying to log in too many times.
 625                                  *      Remove ALL reply attributes.
 626                                  */
 627                                 pairfree(&request->reply->vps);
 628                                 radius_pairmake(request, &request->reply->vps,
 629                                                 "Reply-Message",
 630                                                 user_msg, T_OP_SET);
 631
 632                                 snprintf(logstr, sizeof(logstr), "Multiple logins (max %d) %s",
 633                                         check_item->vp_integer,
 634                                         r == 2 ? "[MPP attempt]" : "");
 635                                 rad_authlog(logstr, request, 1);
 636
 637                                 result = -1;
 638                         }
 639                 }
 640         }
 641 #endif
 642
 643         /*
 644          *      Result should be >= 0 here - if not, it means the user
 645          *      is rejected, so we just process post-auth and return.
 646          */
 647         if (result < 0) {
 648                 return RLM_MODULE_REJECT;
 649         }
 650
 651         /*
 652          *      Set the reply to Access-Accept, if it hasn't already
 653          *      been set to something.  (i.e. Access-Challenge)
 654          */
 655         if (request->reply->code == 0)
 656           request->reply->code = PW_AUTHENTICATION_ACK;
 657
 658         if ((module_msg = pairfind(request->packet->vps,PW_MODULE_SUCCESS_MESSAGE, 0)) != NULL){
 659                 char msg[MAX_STRING_LEN+12];
 660
 661                 snprintf(msg, sizeof(msg), "Login OK (%s)",
 662                          module_msg->vp_strvalue);
 663                 rad_authlog(msg, request, 1);
 664         } else {
 665                 rad_authlog("Login OK", request, 1);
 666         }
 667
 668         return result;
 669 }
 670
 671 /*
 672  *      Run a virtual server auth and postauth
 673  *
 674  */
 675 int rad_virtual_server(REQUEST *request)
 676 {
 677         VALUE_PAIR *vp;
 678         int result;
 679
 680         /*
 681          *      We currently only handle AUTH packets here.
 682          *      This could be expanded to handle other packets as well if required.
 683          */
 684         rad_assert(request->packet->code == PW_AUTHENTICATION_REQUEST);
 685
 686         result = rad_authenticate(request);
 687
 688         if (request->reply->code == PW_AUTHENTICATION_REJECT) {
 689                 pairdelete(&request->config_items, PW_POST_AUTH_TYPE, 0);
 690                 vp = radius_pairmake(request, &request->config_items,
 691                                      "Post-Auth-Type", "Reject",
 692                                      T_OP_SET);
 693                 if (vp) rad_postauth(request);
 694         }
 695
 696         if (request->reply->code == PW_AUTHENTICATION_ACK) {
 697                 rad_postauth(request);
 698         }
 699
 700         return result;
 701 }
 702