Move variable declaration to the start of the block
[freeradius.git] / src / main / auth.c
index 2b57e71..0545114 100644 (file)
  *
  *   You should have received a copy of the GNU General Public License
  *   along with this program; if not, write to the Free Software
- *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  *
- * Copyright 2000  The FreeRADIUS server project
+ * Copyright 2000,2006  The FreeRADIUS server project
  * Copyright 2000  Miquel van Smoorenburg <miquels@cistron.nl>
  * Copyright 2000  Jeff Carneal <jeff@apex.net>
  */
 
-static const char rcsid[] = "$Id$";
+#include <freeradius-devel/ident.h>
+RCSID("$Id$")
 
-#include "autoconf.h"
-#include "libradius.h"
+#include <freeradius-devel/radiusd.h>
+#include <freeradius-devel/modules.h>
+#include <freeradius-devel/rad_assert.h>
 
-#include <stdlib.h>
-#include <string.h>
 #include <ctype.h>
 
-#ifdef HAVE_NETINET_IN_H
-#      include <netinet/in.h>
-#endif
-
-#include "radiusd.h"
-#include "modules.h"
-
 /*
  *     Return a short string showing the terminal server, port
  *     and calling station ID.
  */
-char *auth_name(char *buf, size_t buflen, REQUEST *request, int do_cli) {
+char *auth_name(char *buf, size_t buflen, REQUEST *request, int do_cli)
+{
        VALUE_PAIR      *cli;
        VALUE_PAIR      *pair;
        int             port = 0;
 
-       if ((cli = pairfind(request->packet->vps, PW_CALLING_STATION_ID)) == NULL)
+       if ((cli = pairfind(request->packet->vps, PW_CALLING_STATION_ID, 0)) == NULL)
                do_cli = 0;
-       if ((pair = pairfind(request->packet->vps, PW_NAS_PORT)) != NULL)
-               port = pair->lvalue;
+       if ((pair = pairfind(request->packet->vps, PW_NAS_PORT, 0)) != NULL)
+               port = pair->vp_integer;
 
-       snprintf(buf, buflen, "from client %.128s port %u%s%.128s",
-                       client_name(request->packet->src_ipaddr), port,
-                       (do_cli ? " cli " : ""), (do_cli ? (char *)cli->strvalue : ""));
+       snprintf(buf, buflen, "from client %.128s port %u%s%.128s%s",
+                       request->client->shortname, port,
+                (do_cli ? " cli " : ""), (do_cli ? (char *)cli->vp_strvalue : ""),
+                (request->packet->dst_port == 0) ? " via TLS tunnel" : "");
 
        return buf;
 }
 
 
-/*
- *     Check if account has expired, and if user may login now.
- */
-static int check_expiration(REQUEST *request)
-{
-       VALUE_PAIR *check_item;
-       VALUE_PAIR *vp;
-
-       check_item = pairfind(request->config_items, PW_EXPIRATION);
-
-       if (!check_item)  return 0;
-
-       /*
-        *      Has this user's password expired?
-        *
-        *      If so, remove ALL reply attributes,
-        *      and add our own Reply-Message, saying
-        *      why they're being rejected.
-        */
-       if (((time_t) check_item->lvalue) <= request->timestamp) {
-               vp = pairmake("Reply-Message",
-                             "Password Has Expired\r\n",
-                             T_OP_ADD);
-               pairfree(&request->reply->vps);
-               request->reply->vps = vp;
-               return -1;
-       }
-
-#define EXP_TIMEOUT ((uint32_t) (((time_t) check_item->lvalue) - request->timestamp))
-       /*
-        *      Otherwise, set the Session-Timeout based on expiration.
-        */
-       vp = pairfind(request->reply->vps, PW_SESSION_TIMEOUT);
-       if (!vp) {
-               vp = pairmake("Session-Timeout", "0", T_OP_SET);
-               if (!vp) return -1; /* out of memory */
-               
-               vp->lvalue = EXP_TIMEOUT;
-               pairadd(&request->reply->vps, vp);
-       } else if (vp->lvalue > EXP_TIMEOUT) {
-               vp->lvalue = EXP_TIMEOUT;
-       } /* else Session-Timeout is smaller than Expiration, leave it alone */
-
-       return 0;
-}
-
 
 /*
  * Make sure user/pass are clean
  * and then log them
  */
-static int rad_authlog(const char *msg, REQUEST *request, int goodpass) {
-
+static int rad_authlog(const char *msg, REQUEST *request, int goodpass)
+{
+       int logit;
+       const char *extra_msg = NULL;
        char clean_password[1024];
        char clean_username[1024];
        char buf[1024];
+       char extra[1024];
        VALUE_PAIR *username = NULL;
 
-       if (!mainconfig.log_auth) {
+       if (!request->root->log_auth) {
                return 0;
        }
 
@@ -126,7 +78,7 @@ static int rad_authlog(const char *msg, REQUEST *request, int goodpass) {
         * Get the correct username based on the configured value
         */
        if (log_stripped_names == 0) {
-               username = pairfind(request->packet->vps, PW_USER_NAME);
+               username = pairfind(request->packet->vps, PW_USER_NAME, 0);
        } else {
                username = request->username;
        }
@@ -137,7 +89,7 @@ static int rad_authlog(const char *msg, REQUEST *request, int goodpass) {
        if (username == NULL) {
                strcpy(clean_username, "<no User-Name attribute>");
        } else {
-               librad_safeprint((char *)username->strvalue,
+               fr_print_string((char *)username->vp_strvalue,
                                username->length,
                                clean_username, sizeof(clean_username));
        }
@@ -145,34 +97,52 @@ static int rad_authlog(const char *msg, REQUEST *request, int goodpass) {
        /*
         *      Clean up the password
         */
-       if (mainconfig.log_auth_badpass || mainconfig.log_auth_goodpass) {
+       if (request->root->log_auth_badpass || request->root->log_auth_goodpass) {
                if (!request->password) {
-                       strcpy(clean_password, "<no User-Password attribute>");
-               } else if (request->password->attribute == PW_CHAP_PASSWORD) {
+                       VALUE_PAIR *auth_type;
+
+                       auth_type = pairfind(request->config_items,
+                                            PW_AUTH_TYPE, 0);
+                       if (auth_type && (auth_type->vp_strvalue[0] != '\0')) {
+                               snprintf(clean_password, sizeof(clean_password),
+                                        "<via Auth-Type = %s>",
+                                        auth_type->vp_strvalue);
+                       } else {
+                               strcpy(clean_password, "<no User-Password attribute>");
+                       }
+               } else if (pairfind(request->packet->vps, PW_CHAP_PASSWORD, 0)) {
                        strcpy(clean_password, "<CHAP-Password>");
                } else {
-                       librad_safeprint((char *)request->password->strvalue,
+                       fr_print_string((char *)request->password->vp_strvalue,
                                         request->password->length,
                                         clean_password, sizeof(clean_password));
                }
        }
 
        if (goodpass) {
-               radlog(L_AUTH, "%s: [%s%s%s] (%s)",
-                               msg,
-                               clean_username,
-                               mainconfig.log_auth_goodpass ? "/" : "",
-                               mainconfig.log_auth_goodpass ? clean_password : "",
-                               auth_name(buf, sizeof(buf), request, 1));
+               logit = request->root->log_auth_goodpass;
+               extra_msg = request->root->auth_goodpass_msg;
        } else {
-               radlog(L_AUTH, "%s: [%s%s%s] (%s)",
-                               msg,
-                               clean_username,
-                               mainconfig.log_auth_badpass ? "/" : "",
-                               mainconfig.log_auth_badpass ? clean_password : "",
-                               auth_name(buf, sizeof(buf), request, 1));
+               logit = request->root->log_auth_badpass;
+               extra_msg = request->root->auth_badpass_msg;
        }
 
+       if (extra_msg) {
+               extra[0] = ' ';
+               radius_xlat(extra + 1, sizeof(extra) - 1, extra_msg, request,
+                           NULL);
+       } else {
+               *extra = '\0';
+       }
+
+       radlog_request(L_AUTH, 0, request, "%s: [%s%s%s] (%s)%s",
+                      msg,
+                      clean_username,
+                      logit ? "/" : "",
+                      logit ? clean_password : "",
+                      auth_name(buf, sizeof(buf), request, 1),
+                      extra);
+
        return 0;
 }
 
@@ -186,13 +156,13 @@ static int rad_authlog(const char *msg, REQUEST *request, int goodpass) {
  *
  *     NOTE: NOT the same as the RLM_ values !
  */
-int rad_check_password(REQUEST *request)
+static int rad_check_password(REQUEST *request)
 {
        VALUE_PAIR *auth_type_pair;
        VALUE_PAIR *cur_config_item;
        VALUE_PAIR *password_pair;
        VALUE_PAIR *auth_item;
-       char string[MAX_STRING_LEN];
+       uint8_t my_chap[MAX_STRING_LEN];
        int auth_type = -1;
        int result;
        int auth_type_count = 0;
@@ -204,23 +174,26 @@ int rad_check_password(REQUEST *request)
         *      PW_AUTHTYPE_REJECT.
         */
        cur_config_item = request->config_items;
-       while(((auth_type_pair = pairfind(cur_config_item, PW_AUTH_TYPE))) != NULL) {
-               auth_type = auth_type_pair->lvalue;
+       while(((auth_type_pair = pairfind(cur_config_item, PW_AUTH_TYPE, 0))) != NULL) {
+               DICT_VALUE *dv;
+               auth_type = auth_type_pair->vp_integer;
                auth_type_count++;
+               dv = dict_valbyattr(auth_type_pair->attribute,
+                                               auth_type_pair->vp_integer, 0);
 
-               DEBUG2("  rad_check_password:  Found Auth-Type %s",
-                               auth_type_pair->strvalue);
+               RDEBUG2("Found Auth-Type = %s",
+                       (dv != NULL) ? dv->name : "?");
                cur_config_item = auth_type_pair->next;
 
                if (auth_type == PW_AUTHTYPE_REJECT) {
-                       DEBUG2("  rad_check_password: Auth-Type = Reject, rejecting user");
+                       RDEBUG2("Auth-Type = Reject, rejecting user");
                        return -2;
                }
        }
 
        if (( auth_type_count > 1) && (debug_flag)) {
-               radlog(L_ERR, "Warning:  Found %d auth-types on request for user '%s'",
-                       auth_type_count, request->username->strvalue);
+               radlog_request(L_ERR, 0, request, "Warning:  Found %d auth-types on request for user '%s'",
+                       auth_type_count, request->username->vp_strvalue);
        }
 
        /*
@@ -229,35 +202,55 @@ int rad_check_password(REQUEST *request)
         *  that means it is accepted and we do no further
         *  authentication
         */
-       if ((auth_type == PW_AUTHTYPE_ACCEPT) || (request->proxy)) {
-               DEBUG2("  rad_check_password: Auth-Type = Accept, accepting the user");
+       if ((auth_type == PW_AUTHTYPE_ACCEPT)
+#ifdef WITH_PROXY
+           || (request->proxy)
+#endif
+           ) {
+               RDEBUG2("Auth-Type = Accept, accepting the user");
                return 0;
        }
 
+       password_pair =  pairfind(request->config_items, PW_USER_PASSWORD, 0);
+       if (password_pair &&
+           pairfind(request->config_items, PW_CLEARTEXT_PASSWORD, 0)) {
+         pairdelete(&request->config_items, PW_USER_PASSWORD, 0);
+               password_pair = NULL;
+       }
+
+       if (password_pair) {
+               DICT_ATTR *da;
+
+               RDEBUG("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
+               RDEBUG("!!!    Replacing User-Password in config items with Cleartext-Password.     !!!");
+               RDEBUG("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
+               RDEBUG("!!! Please update your configuration so that the \"known good\"               !!!");
+               RDEBUG("!!! clear text password is in Cleartext-Password, and not in User-Password. !!!");
+               RDEBUG("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
+               password_pair->attribute = PW_CLEARTEXT_PASSWORD;
+               da = dict_attrbyvalue(PW_CLEARTEXT_PASSWORD, 0);
+               if (!da) {
+                       radlog_request(L_ERR, 0, request, "FATAL: You broke the dictionaries.  Please use the default dictionaries!");
+                       _exit(1);
+               }
+
+               password_pair->name = da->name;
+       }
+
        /*
-        *      Find the password from the users file.
+        *      Find the "known good" password.
+        *
+        *      FIXME: We should get rid of these hacks, and replace
+        *      them with a module.
         */
-       if ((password_pair = pairfind(request->config_items, PW_CRYPT_PASSWORD)) != NULL) {
+       if ((password_pair = pairfind(request->config_items, PW_CRYPT_PASSWORD, 0)) != NULL) {
                /*
                 *      Re-write Auth-Type, but ONLY if it isn't already
                 *      set.
                 */
                if (auth_type == -1) auth_type = PW_AUTHTYPE_CRYPT;
        } else {
-               password_pair = pairfind(request->config_items, PW_PASSWORD);
-               if (!password_pair) {
-                       password_pair = pairfind(request->config_items,
-                                                PW_CLEARTEXT_PASSWORD);
-                       if (password_pair) {
-                               VALUE_PAIR *old;
-
-                               old = pairmake("User-Password",
-                                              password_pair->strvalue,
-                                              T_OP_SET);
-                               if (old) pairadd(&request->config_items, old);
-                       }
-               }
-               
+               password_pair = pairfind(request->config_items, PW_CLEARTEXT_PASSWORD, 0);
        }
 
        if (auth_type < 0) {
@@ -270,15 +263,16 @@ int rad_check_password(REQUEST *request)
                        *
                        *       This is fail-safe.
                        */
-                       DEBUG2("auth: No authenticate method (Auth-Type) configuration found for the request: Rejecting the user");
+                       RDEBUG2("ERROR: No authenticate method (Auth-Type) found for the request: Rejecting the user");
                        return -2;
                }
        }
 
        switch(auth_type) {
-               DICT_VALUE *dval;
-
                case PW_AUTHTYPE_CRYPT:
+                       RDEBUG2("WARNING: Please update your configuration, and remove 'Auth-Type = Crypt'");
+                       RDEBUG2("WARNING: Use the PAP module instead.");
+
                        /*
                         *      Find the password sent by the user. It
                         *      SHOULD be there, if it's not
@@ -286,20 +280,19 @@ int rad_check_password(REQUEST *request)
                         */
                        auth_item = request->password;
                        if (auth_item == NULL) {
-                               DEBUG2("auth: No User-Password or CHAP-Password attribute in the request");
+                               RDEBUG2("No User-Password or CHAP-Password attribute in the request");
                                return -1;
                        }
 
-                       DEBUG2("auth: type Crypt");
                        if (password_pair == NULL) {
-                               DEBUG2("No Crypt-Password configured for the user");
+                               RDEBUG2("No Crypt-Password configured for the user");
                                rad_authlog("Login incorrect "
                                        "(No Crypt-Password configured for the user)", request, 0);
                                return -1;
                        }
 
-                       switch (lrad_crypt_check((char *)auth_item->strvalue,
-                                                                        (char *)password_pair->strvalue)) {
+                       switch (fr_crypt_check((char *)auth_item->vp_strvalue,
+                                                                        (char *)password_pair->vp_strvalue)) {
                        case -1:
                          rad_authlog("Login incorrect "
                                                  "(system failed to supply an encrypted password for comparison)", request, 0);
@@ -308,7 +301,8 @@ int rad_check_password(REQUEST *request)
                        }
                        break;
                case PW_AUTHTYPE_LOCAL:
-                       DEBUG2("auth: type Local");
+                       RDEBUG2("WARNING: Please update your configuration, and remove 'Auth-Type = Local'");
+                       RDEBUG2("WARNING: Use the PAP or CHAP modules instead.");
 
                        /*
                         *      Find the password sent by the user. It
@@ -316,8 +310,12 @@ int rad_check_password(REQUEST *request)
                         *      authentication fails.
                         */
                        auth_item = request->password;
-                       if (auth_item == NULL) {
-                               DEBUG2("auth: No User-Password or CHAP-Password attribute in the request");
+                       if (!auth_item)
+                               auth_item = pairfind(request->packet->vps,
+                                                    PW_CHAP_PASSWORD, 0);
+                       if (!auth_item) {
+                               RDEBUG2("No User-Password or CHAP-Password attribute in the request.");
+                               RDEBUG2("Cannot perform authentication.");
                                return -1;
                        }
 
@@ -325,7 +323,8 @@ int rad_check_password(REQUEST *request)
                         *      Plain text password.
                         */
                        if (password_pair == NULL) {
-                               DEBUG2("auth: No password configured for the user");
+                               RDEBUG2("No \"known good\" password was configured for the user.");
+                               RDEBUG2("As a result, we cannot authenticate the user.");
                                rad_authlog("Login incorrect "
                                        "(No password configured for the user)", request, 0);
                                return -1;
@@ -334,43 +333,36 @@ int rad_check_password(REQUEST *request)
                        /*
                         *      Local password is just plain text.
                         */
-                       if (auth_item->attribute == PW_PASSWORD) {
-                               if (strcmp((char *)password_pair->strvalue,
-                                          (char *)auth_item->strvalue) != 0) {
-                                       DEBUG2("auth: user supplied User-Password does NOT match local User-Password");
+                       if (auth_item->attribute == PW_USER_PASSWORD) {
+                               if (strcmp((char *)password_pair->vp_strvalue,
+                                          (char *)auth_item->vp_strvalue) != 0) {
+                                       RDEBUG2("User-Password in the request does NOT match \"known good\" password.");
                                        return -1;
                                }
-                               DEBUG2("auth: user supplied User-Password matches local User-Password");
+                               RDEBUG2("User-Password in the request is correct.");
                                break;
 
                        } else if (auth_item->attribute != PW_CHAP_PASSWORD) {
-                               DEBUG2("The user did not supply a User-Password or a CHAP-Password attribute");
+                               RDEBUG2("The user did not supply a User-Password or a CHAP-Password attribute");
                                rad_authlog("Login incorrect "
                                        "(no User-Password or CHAP-Password attribute)", request, 0);
                                return -1;
                        }
 
-                       rad_chap_encode(request->packet, string,
-                                       auth_item->strvalue[0], password_pair);
+                       rad_chap_encode(request->packet, my_chap,
+                                       auth_item->vp_octets[0], password_pair);
 
                        /*
                         *      Compare them
                         */
-                       if (memcmp(string + 1, auth_item->strvalue + 1,
+                       if (memcmp(my_chap + 1, auth_item->vp_strvalue + 1,
                                   CHAP_VALUE_LENGTH) != 0) {
-                               DEBUG2("auth: user supplied CHAP-Password does NOT match local User-Password");
+                               RDEBUG2("CHAP-Password is incorrect.");
                                return -1;
                        }
-                       DEBUG2("auth: user supplied CHAP-Password matches local User-Password");
+                       RDEBUG2("CHAP-Password is correct.");
                        break;
                default:
-                       dval = dict_valbyattr(PW_AUTH_TYPE, auth_type);
-                       if (dval) {
-                               DEBUG2("auth: type \"%s\"", dval->name);
-                       } else {
-                               DEBUG2("auth: type UNKNOWN-%d", auth_type);
-                       }
-
                        /*
                         *      See if there is a module that handles
                         *      this type, and turn the RLM_ return
@@ -422,10 +414,10 @@ int rad_postauth(REQUEST *request)
        /*
         *      Do post-authentication calls. ignoring the return code.
         */
-       vp = pairfind(request->config_items, PW_POST_AUTH_TYPE);
+       vp = pairfind(request->config_items, PW_POST_AUTH_TYPE, 0);
        if (vp) {
-               DEBUG2("  Found Post-Auth-Type %s", vp->strvalue);
-               postauth_type = vp->lvalue;
+               RDEBUG2("Using Post-Auth-Type %s", vp->vp_strvalue);
+               postauth_type = vp->vp_integer;
        }
        result = module_post_auth(postauth_type, request);
        switch (result) {
@@ -445,7 +437,6 @@ int rad_postauth(REQUEST *request)
                 */
                case RLM_MODULE_HANDLED:
                        /* FIXME */
-                       result = RLM_MODULE_OK;
                        break;
                /*
                 *      The module had a number of OK return codes.
@@ -461,31 +452,6 @@ int rad_postauth(REQUEST *request)
 }
 
 /*
- *     Before sending an Access-Reject, call the modules in the
- *     Post-Auth-Type REJECT stanza.
- */
-static int rad_postauth_reject(REQUEST *request)
-{
-       int             result;
-       VALUE_PAIR      *tmp;
-       DICT_VALUE      *dval;
-
-       dval = dict_valbyname(PW_POST_AUTH_TYPE, "REJECT");
-       if (dval) {
-               /* Overwrite the Post-Auth-Type with the value REJECT */
-               pairdelete(&request->config_items, PW_POST_AUTH_TYPE);
-               tmp = paircreate(PW_POST_AUTH_TYPE, PW_TYPE_INTEGER);
-               tmp->lvalue = dval->value;
-               pairadd(&request->config_items, tmp);
-               result = rad_postauth(request);
-       } else {
-               /* No REJECT stanza */
-               result = RLM_MODULE_OK;
-       }
-       return result;
-}
-
-/*
  *     Process and reply to an authentication request
  *
  *     The return value of this function isn't actually used right now, so
@@ -494,24 +460,20 @@ static int rad_postauth_reject(REQUEST *request)
 int rad_authenticate(REQUEST *request)
 {
        VALUE_PAIR      *namepair;
+#ifdef WITH_SESSION_MGMT
        VALUE_PAIR      *check_item;
-       VALUE_PAIR      *reply_item;
-       VALUE_PAIR      *auth_item;
+#endif
+       VALUE_PAIR      *auth_item = NULL;
        VALUE_PAIR      *module_msg;
        VALUE_PAIR      *tmp = NULL;
-       int             result, r;
-       char            umsg[MAX_STRING_LEN + 1];
-       const char      *user_msg = NULL;
+       int             result;
        const char      *password;
-       char            *exec_program;
-       int             exec_wait;
-       int             seen_callback_id;
-       char            buf[1024], logstr[1024];
        char            autz_retry = 0;
        int             autz_type = 0;
 
        password = "";
 
+#ifdef WITH_PROXY
        /*
         *      If this request got proxied to another server, we need
         *      to check whether it authenticated the request or not.
@@ -523,14 +485,12 @@ int rad_authenticate(REQUEST *request)
                 *      accordingly.
                 */
                case PW_AUTHENTICATION_ACK:
-                       tmp = paircreate(PW_AUTH_TYPE, PW_TYPE_INTEGER);
-                       if (tmp == NULL) {
-                               radlog(L_ERR|L_CONS, "Not enough memory");
-                               exit(1);
-                       }
-                       tmp->lvalue = PW_AUTHTYPE_ACCEPT;
-                       pairadd(&request->config_items, tmp);
-                       break;
+                       tmp = radius_paircreate(request,
+                                               &request->config_items,
+                                               PW_AUTH_TYPE, 0, PW_TYPE_INTEGER);
+                       if (tmp) tmp->vp_integer = PW_AUTHTYPE_ACCEPT;
+                       goto authenticate;
+
                /*
                 *      Challenges are punted back to the NAS without any
                 *      further processing.
@@ -546,14 +506,18 @@ int rad_authenticate(REQUEST *request)
                 *      done by the server, by rejecting them here.
                 */
                case PW_AUTHENTICATION_REJECT:
-               default:
                        rad_authlog("Login incorrect (Home Server says so)",
                                    request, 0);
                        request->reply->code = PW_AUTHENTICATION_REJECT;
-                       rad_postauth_reject(request);
+                       return RLM_MODULE_REJECT;
+
+               default:
+                       rad_authlog("Login incorrect (Home Server failed to respond)",
+                                   request, 0);
                        return RLM_MODULE_REJECT;
                }
        }
+#endif
 
        /*
         *      Get the username from the request.
@@ -568,7 +532,7 @@ int rad_authenticate(REQUEST *request)
         */
        if (!request->password) {
                request->password = pairfind(request->packet->vps,
-                                            PW_PASSWORD);
+                                            PW_USER_PASSWORD, 0);
        }
 
        /*
@@ -576,14 +540,14 @@ int rad_authenticate(REQUEST *request)
         */
        auth_item = request->password;
        if (auth_item) {
-               password = (const char *)auth_item->strvalue;
+               password = (const char *)auth_item->vp_strvalue;
 
        } else {
                /*
                 *      Maybe there's a CHAP-Password?
                 */
                if ((auth_item = pairfind(request->packet->vps,
-                               PW_CHAP_PASSWORD)) != NULL) {
+                                         PW_CHAP_PASSWORD, 0)) != NULL) {
                        password = "<CHAP-PASSWORD>";
 
                } else {
@@ -606,18 +570,18 @@ autz_redo:
                case RLM_MODULE_OK:
                case RLM_MODULE_UPDATED:
                        break;
-               case RLM_MODULE_FAIL:
                case RLM_MODULE_HANDLED:
                        return result;
+               case RLM_MODULE_FAIL:
                case RLM_MODULE_INVALID:
                case RLM_MODULE_REJECT:
                case RLM_MODULE_USERLOCK:
                default:
                        if ((module_msg = pairfind(request->packet->vps,
-                                       PW_MODULE_FAILURE_MESSAGE)) != NULL) {
+                                                  PW_MODULE_FAILURE_MESSAGE, 0)) != NULL) {
                                char msg[MAX_STRING_LEN + 16];
                                snprintf(msg, sizeof(msg), "Invalid user (%s)",
-                                        module_msg->strvalue);
+                                        module_msg->vp_strvalue);
                                rad_authlog(msg,request,0);
                        } else {
                                rad_authlog("Invalid user", request, 0);
@@ -626,10 +590,10 @@ autz_redo:
                        return result;
        }
        if (!autz_retry) {
-               tmp = pairfind(request->config_items, PW_AUTZ_TYPE);
+               tmp = pairfind(request->config_items, PW_AUTZ_TYPE, 0);
                if (tmp) {
-                       DEBUG2("  Found Autz-Type %s", tmp->strvalue);
-                       autz_type = tmp->lvalue;
+                       RDEBUG2("Using Autz-Type %s", tmp->vp_strvalue);
+                       autz_type = tmp->vp_integer;
                        autz_retry = 1;
                        goto autz_redo;
                }
@@ -641,26 +605,41 @@ autz_redo:
         *      modules has decided that a proxy should be used. If
         *      so, get out of here and send the packet.
         */
-       if ((request->proxy == NULL) &&
-           ((tmp = pairfind(request->config_items, PW_PROXY_TO_REALM)) != NULL)) {
+       if (
+#ifdef WITH_PROXY
+           (request->proxy == NULL) &&
+#endif
+           ((tmp = pairfind(request->config_items, PW_PROXY_TO_REALM, 0)) != NULL)) {
                REALM *realm;
 
+               realm = realm_find2(tmp->vp_strvalue);
+
                /*
-                *      Catch users who set Proxy-To-Realm to a LOCAL
-                *      realm (sigh).
+                *      Don't authenticate, as the request is going to
+                *      be proxied.
                 */
-               realm = realm_find(tmp->strvalue, 0);
-               if (realm && (realm->ipaddr == htonl(INADDR_NONE))) {
-                       DEBUG2("  WARNING: You set Proxy-To-Realm = %s, but it is a LOCAL realm!  Cancelling invalid proxy request.", realm->realm);
-               } else {
-                       /*
-                        *      Don't authenticate, as the request is
-                        *      proxied.
-                        */
+               if (realm && realm->auth_pool) {
                        return RLM_MODULE_OK;
                }
+
+               /*
+                *      Catch users who set Proxy-To-Realm to a LOCAL
+                *      realm (sigh).  But don't complain if it is
+                *      *the* LOCAL realm.
+                */
+               if (realm &&(strcmp(realm->name, "LOCAL") != 0)) {
+                       RDEBUG2("WARNING: You set Proxy-To-Realm = %s, but it is a LOCAL realm!  Cancelling proxy request.", realm->name);
+               }
+
+               if (!realm) {
+                       RDEBUG2("WARNING: You set Proxy-To-Realm = %s, but the realm does not exist!  Cancelling invalid proxy request.", tmp->vp_strvalue);
+               }
        }
 
+#ifdef WITH_PROXY
+ authenticate:
+#endif
+
        /*
         *      Perhaps there is a Stripped-User-Name now.
         */
@@ -670,8 +649,6 @@ autz_redo:
         *      Validate the user
         */
        do {
-               if ((result = check_expiration(request)) < 0)
-                               break;
                result = rad_check_password(request);
                if (result > 0) {
                        /* don't reply! */
@@ -687,14 +664,14 @@ autz_redo:
         *      wants to send back.
         */
        if (result < 0) {
-               DEBUG2("auth: Failed to validate the user.");
+               RDEBUG2("Failed to authenticate the user.");
                request->reply->code = PW_AUTHENTICATION_REJECT;
 
-               if ((module_msg = pairfind(request->packet->vps,PW_MODULE_FAILURE_MESSAGE)) != NULL){
+               if ((module_msg = pairfind(request->packet->vps,PW_MODULE_FAILURE_MESSAGE, 0)) != NULL){
                        char msg[MAX_STRING_LEN+19];
 
                        snprintf(msg, sizeof(msg), "Login incorrect (%s)",
-                                module_msg->strvalue);
+                                module_msg->vp_strvalue);
                        rad_authlog(msg, request, 0);
                } else {
                        rad_authlog("Login incorrect", request, 0);
@@ -702,10 +679,10 @@ autz_redo:
 
                /* double check: maybe the secret is wrong? */
                if ((debug_flag > 1) && (auth_item != NULL) &&
-                               (auth_item->attribute == PW_PASSWORD)) {
-                       u_char *p;
+                               (auth_item->attribute == PW_USER_PASSWORD)) {
+                       char *p;
 
-                       p = auth_item->strvalue;
+                       p = auth_item->vp_strvalue;
                        while (*p != '\0') {
                                if (!isprint((int) *p)) {
                                        log_debug("  WARNING: Unprintable characters in the password.\n\t  Double-check the shared secret on the server and the NAS!");
@@ -716,14 +693,18 @@ autz_redo:
                }
        }
 
+#ifdef WITH_SESSION_MGMT
        if (result >= 0 &&
-           (check_item = pairfind(request->config_items, PW_SIMULTANEOUS_USE)) != NULL) {
-               int session_type = 0;
+           (check_item = pairfind(request->config_items, PW_SIMULTANEOUS_USE, 0)) != NULL) {
+               int r, session_type = 0;
+               char            logstr[1024];
+               char            umsg[MAX_STRING_LEN + 1];
+               const char      *user_msg = NULL;
 
-               tmp = pairfind(request->config_items, PW_SESSION_TYPE);
+               tmp = pairfind(request->config_items, PW_SESSION_TYPE, 0);
                if (tmp) {
-                       DEBUG2("  Found Session-Type %s", tmp->strvalue);
-                       session_type = tmp->lvalue;
+                       RDEBUG2("Using Session-Type %s", tmp->vp_strvalue);
+                       session_type = tmp->vp_integer;
                }
 
                /*
@@ -731,24 +712,24 @@ autz_redo:
                 *      for the Simultaneous-Use parameter.
                 */
                if (namepair &&
-                   (r = module_checksimul(session_type, request, check_item->lvalue)) != 0) {
+                   (r = module_checksimul(session_type, request, check_item->vp_integer)) != 0) {
                        char mpp_ok = 0;
 
                        if (r == 2){
                                /* Multilink attempt. Check if port-limit > simultaneous-use */
                                VALUE_PAIR *port_limit;
 
-                               if ((port_limit = pairfind(request->reply->vps, PW_PORT_LIMIT)) != NULL &&
-                                       port_limit->lvalue > check_item->lvalue){
-                                       DEBUG2("main auth: MPP is OK");
+                               if ((port_limit = pairfind(request->reply->vps, PW_PORT_LIMIT, 0)) != NULL &&
+                                       port_limit->vp_integer > check_item->vp_integer){
+                                       RDEBUG2("MPP is OK");
                                        mpp_ok = 1;
                                }
                        }
                        if (!mpp_ok){
-                               if (check_item->lvalue > 1) {
+                               if (check_item->vp_integer > 1) {
                                snprintf(umsg, sizeof(umsg),
                                                        "\r\nYou are already logged in %d times  - access denied\r\n\n",
-                                                       (int)check_item->lvalue);
+                                                       (int)check_item->vp_integer);
                                        user_msg = umsg;
                                } else {
                                        user_msg = "\r\nYou are already logged in - access denied\r\n\n";
@@ -761,11 +742,12 @@ autz_redo:
                                 *      Remove ALL reply attributes.
                                 */
                                pairfree(&request->reply->vps);
-                               tmp = pairmake("Reply-Message", user_msg, T_OP_SET);
-                               request->reply->vps = tmp;
+                               radius_pairmake(request, &request->reply->vps,
+                                               "Reply-Message",
+                                               user_msg, T_OP_SET);
 
                                snprintf(logstr, sizeof(logstr), "Multiple logins (max %d) %s",
-                                       check_item->lvalue,
+                                       check_item->vp_integer,
                                        r == 2 ? "[MPP attempt]" : "");
                                rad_authlog(logstr, request, 1);
 
@@ -773,90 +755,22 @@ autz_redo:
                        }
                }
        }
-
-       if (result >= 0 &&
-           (check_item = pairfind(request->config_items, PW_LOGIN_TIME)) != NULL) {
-
-               /*
-                *      Authentication is OK. Now see if this
-                *      user may login at this time of the day.
-                */
-               r = timestr_match((char *)check_item->strvalue,
-                                 request->timestamp);
-
-               if (r == 0) {   /* unlimited */
-                       /*
-                        *      Do nothing: login-time is OK.
-                        */
-
-                       /*
-                        *      Session-Timeout needs to be at least
-                        *      60 seconds, some terminal servers
-                        *      ignore smaller values.
-                        */
-               } else if (r < 60) {
-                       /*
-                        *      User called outside allowed time interval.
-                        */
-                       result = -1;
-                       user_msg = "You are calling outside your allowed timespan\r\n";
-
-                       request->reply->code = PW_AUTHENTICATION_REJECT;
-                       pairfree(&request->reply->vps);
-
-                       tmp = pairmake("Reply-Message", user_msg, T_OP_SET);
-                       request->reply->vps = tmp;
-
-                       snprintf(logstr, sizeof(logstr), "Outside allowed timespan (time allowed %s)",
-                                check_item->strvalue);
-                       rad_authlog(logstr, request, 1);
-
-               } else if (r > 0) {
-
-                       /*
-                        *      User is allowed, but set Session-Timeout.
-                        */
-                       if ((reply_item = pairfind(request->reply->vps,
-                                       PW_SESSION_TIMEOUT)) != NULL) {
-                               if (reply_item->lvalue > (unsigned) r)
-                                       reply_item->lvalue = r;
-                       } else {
-                               if ((reply_item = paircreate(
-                                               PW_SESSION_TIMEOUT,
-                                               PW_TYPE_INTEGER)) == NULL) {
-                                       radlog(L_ERR|L_CONS, "no memory");
-                                       exit(1);
-                               }
-                               reply_item->lvalue = r;
-                               pairadd(&request->reply->vps, reply_item);
-                       }
-               }
-       }
+#endif
 
        /*
         *      Result should be >= 0 here - if not, it means the user
         *      is rejected, so we just process post-auth and return.
         */
        if (result < 0) {
-               rad_postauth_reject(request);
                return RLM_MODULE_REJECT;
        }
 
        /*
-        *      We might need this later.  The 'password' string
-        *      is NOT used anywhere below here, except for logging,
-        *      so it should be safe...
-        */
-       if ((auth_item != NULL) && (auth_item->attribute == PW_CHAP_PASSWORD)) {
-               password = "CHAP-Password";
-       }
-
-       /*
         *      Add the port number to the Framed-IP-Address if
         *      vp->addport is set.
         */
        if (((tmp = pairfind(request->reply->vps,
-                            PW_FRAMED_IP_ADDRESS)) != NULL) &&
+                            PW_FRAMED_IP_ADDRESS, 0)) != NULL) &&
            (tmp->flags.addport != 0)) {
                VALUE_PAIR *vpPortId;
 
@@ -864,137 +778,14 @@ autz_redo:
                 *  Find the NAS port ID.
                 */
                if ((vpPortId = pairfind(request->packet->vps,
-                                        PW_NAS_PORT)) != NULL) {
-                 unsigned long tvalue = ntohl(tmp->lvalue);
-                 tmp->lvalue = htonl(tvalue + vpPortId->lvalue);
+                                        PW_NAS_PORT, 0)) != NULL) {
+                 unsigned long tvalue = ntohl(tmp->vp_integer);
+                 tmp->vp_integer = htonl(tvalue + vpPortId->vp_integer);
                  tmp->flags.addport = 0;
-                 ip_ntoa(tmp->strvalue, tmp->lvalue);
+                 ip_ntoa(tmp->vp_strvalue, tmp->vp_integer);
                } else {
-                       DEBUG2("WARNING: No NAS-Port attribute in request.  CANNOT return a Framed-IP-Address + NAS-Port.\n");
-                       pairdelete(&request->reply->vps, PW_FRAMED_IP_ADDRESS);
-               }
-       }
-
-       /*
-        *      See if we need to execute a program.
-        *      FIXME: somehow cache this info, and only execute the
-        *      program when we receive an Accounting-START packet.
-        *      Only at that time we know dynamic IP etc.
-        */
-       exec_program = NULL;
-       exec_wait = 0;
-       if ((auth_item = pairfind(request->reply->vps, PW_EXEC_PROGRAM)) != NULL) {
-               exec_wait = 0;
-               exec_program = strdup((char *)auth_item->strvalue);
-               pairdelete(&request->reply->vps, PW_EXEC_PROGRAM);
-       }
-       if ((auth_item = pairfind(request->reply->vps, PW_EXEC_PROGRAM_WAIT)) != NULL) {
-               free(exec_program);
-               exec_wait = 1;
-               exec_program = strdup((char *)auth_item->strvalue);
-               pairdelete(&request->reply->vps, PW_EXEC_PROGRAM_WAIT);
-       }
-
-       /*
-        *      Hack - allow % expansion in certain value strings.
-        *      This is nice for certain Exec-Program programs.
-        */
-       seen_callback_id = 0;
-       if ((auth_item = pairfind(request->reply->vps, PW_CALLBACK_ID)) != NULL) {
-               seen_callback_id = 1;
-               radius_xlat(buf, sizeof(auth_item->strvalue),
-                           (char *)auth_item->strvalue, request, NULL);
-               strNcpy((char *)auth_item->strvalue, buf,
-                       sizeof(auth_item->strvalue));
-               auth_item->length = strlen((char *)auth_item->strvalue);
-       }
-
-
-       /*
-        *      If we want to exec a program, but wait for it,
-        *      do it first before sending the reply.
-        */
-       if (exec_program && exec_wait) {
-               r = radius_exec_program(exec_program, request,
-                                       exec_wait,
-                                       NULL, 0,
-                                       request->packet->vps, &tmp);
-               free(exec_program);
-               exec_program = NULL;
-
-               /*
-                *      Always add the value-pairs to the reply.
-                */
-               pairmove(&request->reply->vps, &tmp);
-               pairfree(&tmp);
-
-               if (r < 0) {
-                       /*
-                        *      Error. radius_exec_program() returns -1 on
-                        *      fork/exec errors.
-                        */
-                       user_msg = "Access denied (external check failed)";
-                       tmp = pairmake("Reply-Message", user_msg, T_OP_SET);
-                       pairadd(&request->reply->vps, tmp);
-
-                       request->reply->code = PW_AUTHENTICATION_REJECT;
-                       rad_authlog("Login incorrect (external check failed)",
-                                   request, 0);
-                       rad_postauth_reject(request);
-
-                       return RLM_MODULE_REJECT;
-               }
-               if (r > 0) {
-                       /*
-                        *      Reject. radius_exec_program() returns >0
-                        *      if the exec'ed program had a non-zero
-                        *      exit status.
-                        */
-                       request->reply->code = PW_AUTHENTICATION_REJECT;
-                       rad_authlog("Login incorrect (external check said so)",
-                                   request, 0);
-                       rad_postauth_reject(request);
-
-                       return RLM_MODULE_REJECT;
-               }
-       }
-
-       /*
-        *      Delete "normal" A/V pairs when using callback.
-        *
-        *      FIXME: This is stupid. The portmaster should accept
-        *      these settings instead of insisting on using a
-        *      dialout location.
-        *
-        *      FIXME2: Move this into the above exec thingy?
-        *      (if you knew how I use the exec_wait, you'd understand).
-        */
-       if (seen_callback_id) {
-               pairdelete(&request->reply->vps, PW_FRAMED_PROTOCOL);
-               pairdelete(&request->reply->vps, PW_FRAMED_IP_ADDRESS);
-               pairdelete(&request->reply->vps, PW_FRAMED_IP_NETMASK);
-               pairdelete(&request->reply->vps, PW_FRAMED_ROUTE);
-               pairdelete(&request->reply->vps, PW_FRAMED_MTU);
-               pairdelete(&request->reply->vps, PW_FRAMED_COMPRESSION);
-               pairdelete(&request->reply->vps, PW_FILTER_ID);
-               pairdelete(&request->reply->vps, PW_PORT_LIMIT);
-               pairdelete(&request->reply->vps, PW_CALLBACK_NUMBER);
-       }
-
-       /*
-        *      Filter (possibly multiple) Reply-Message attributes
-        *      through radius_xlat, modifying them in place.
-        */
-       if (user_msg == NULL) {
-               reply_item = pairfind(request->reply->vps, PW_REPLY_MESSAGE);
-               while (reply_item) {
-                       radius_xlat(buf, sizeof(reply_item->strvalue),
-                                   (char *)reply_item->strvalue, request, NULL);
-                       strNcpy((char *)reply_item->strvalue, buf,
-                               sizeof(reply_item->strvalue));
-                       reply_item->length = strlen((char *)reply_item->strvalue);
-                       user_msg = NULL;
-                       reply_item = pairfind(reply_item->next, PW_REPLY_MESSAGE);
+                       RDEBUG2("WARNING: No NAS-Port attribute in request.  CANNOT return a Framed-IP-Address + NAS-Port.\n");
+                       pairdelete(&request->reply->vps, PW_FRAMED_IP_ADDRESS, 0);
                }
        }
 
@@ -1005,27 +796,19 @@ autz_redo:
        if (request->reply->code == 0)
          request->reply->code = PW_AUTHENTICATION_ACK;
 
-       if ((module_msg = pairfind(request->packet->vps,PW_MODULE_SUCCESS_MESSAGE)) != NULL){
+       if ((module_msg = pairfind(request->packet->vps,PW_MODULE_SUCCESS_MESSAGE, 0)) != NULL){
                char msg[MAX_STRING_LEN+12];
 
                snprintf(msg, sizeof(msg), "Login OK (%s)",
-                        module_msg->strvalue);
+                        module_msg->vp_strvalue);
                rad_authlog(msg, request, 1);
        } else {
                rad_authlog("Login OK", request, 1);
        }
 
-       if (exec_program && !exec_wait) {
-               /*
-                *      No need to check the exit status here.
-                */
-               radius_exec_program(exec_program, request, exec_wait,
-                                   NULL, 0, request->packet->vps, NULL);
-       }
-
-       if (exec_program)
-               free(exec_program);
-
+       /*
+        *      Run the modules in the 'post-auth' section.
+        */
        result = rad_postauth(request);
 
        return result;