src/main/acct.c

   1 /*
   2  * acct.c       Accounting routines.
   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  Alan DeKok <aland@ox.org>
  23  * Copyright 2000  Alan Curry <pacman@world.std.com>
  24  */
  25
  26 #include <freeradius-devel/ident.h>
  27 RCSID("$Id$")
  28
  29 #include <freeradius-devel/autoconf.h>
  30 #include <freeradius-devel/radiusd.h>
  31 #include <freeradius-devel/modules.h>
  32
  33 /*
  34  *      rad_accounting: call modules.
  35  *
  36  *      The return value of this function isn't actually used right now, so
  37  *      it's not entirely clear if it is returning the right things. --Pac.
  38  */
  39 int rad_accounting(REQUEST *request)
  40 {
  41         int result = RLM_MODULE_OK;
  42
  43         /*
  44          *      Run the modules only once, before proxying.
  45          */
  46         if (!request->proxy) {
  47                 VALUE_PAIR      *vp;
  48                 int             acct_type = 0;
  49
  50                 result = module_preacct(request);
  51                 switch (result) {
  52                         /*
  53                          *      The module has a number of OK return codes.
  54                          */
  55                         case RLM_MODULE_NOOP:
  56                         case RLM_MODULE_OK:
  57                         case RLM_MODULE_UPDATED:
  58                                 break;
  59                         /*
  60                          *      The module handled the request, stop here.
  61                          */
  62                         case RLM_MODULE_HANDLED:
  63                                 return result;
  64                         /*
  65                          *      The module failed, or said the request is
  66                          *      invalid, therefore we stop here.
  67                          */
  68                         case RLM_MODULE_FAIL:
  69                         case RLM_MODULE_INVALID:
  70                         case RLM_MODULE_NOTFOUND:
  71                         case RLM_MODULE_REJECT:
  72                         case RLM_MODULE_USERLOCK:
  73                         default:
  74                                 return result;
  75                 }
  76
  77                 /*
  78                  *      Do the data storage before proxying. This is to ensure
  79                  *      that we log the packet, even if the proxy never does.
  80                  */
  81                 vp = pairfind(request->config_items, PW_ACCT_TYPE);
  82                 if (vp) {
  83                         DEBUG2("  Found Acct-Type %s", vp->vp_strvalue);
  84                         acct_type = vp->lvalue;
  85                 }
  86                 result = module_accounting(acct_type, request);
  87                 switch (result) {
  88                         /*
  89                          *      In case the accounting module returns FAIL,
  90                          *      it's still useful to send the data to the
  91                          *      proxy.
  92                          */
  93                         case RLM_MODULE_FAIL:
  94                         case RLM_MODULE_NOOP:
  95                         case RLM_MODULE_OK:
  96                         case RLM_MODULE_UPDATED:
  97                                 break;
  98                         /*
  99                          *      The module handled the request, don't reply.
 100                          */
 101                         case RLM_MODULE_HANDLED:
 102                                 return result;
 103                         /*
 104                          *      Neither proxy, nor reply to invalid requests.
 105                          */
 106                         case RLM_MODULE_INVALID:
 107                         case RLM_MODULE_NOTFOUND:
 108                         case RLM_MODULE_REJECT:
 109                         case RLM_MODULE_USERLOCK:
 110                         default:
 111                                 return result;
 112                 }
 113
 114                 /*
 115                  *      Maybe one of the preacct modules has decided
 116                  *      that a proxy should be used.
 117                  */
 118                 if ((vp = pairfind(request->config_items, PW_PROXY_TO_REALM))) {
 119                         REALM *realm;
 120
 121                         /*
 122                          *      Check whether Proxy-To-Realm is
 123                          *      a LOCAL realm.
 124                          */
 125                         realm = realm_find(vp->vp_strvalue, TRUE);
 126                         if (realm != NULL &&
 127                             realm->acct_ipaddr.af == AF_INET &&
 128                             realm->acct_ipaddr.ipaddr.ip4addr.s_addr == htonl(INADDR_NONE)) {
 129                                 DEBUG("rad_accounting: Cancelling proxy to realm %s, as it is a LOCAL realm.", realm->realm);
 130                                 pairdelete(&request->config_items, PW_PROXY_TO_REALM);
 131                         } else {
 132                                 /*
 133                                  *      Don't reply to the NAS now because
 134                                  *      we have to send the proxied packet
 135                                  *      before that.
 136                                  */
 137                                 return result;
 138                         }
 139                 }
 140         }
 141
 142         /*
 143          *      We get here IF we're not proxying, OR if we've
 144          *      received the accounting reply from the end server,
 145          *      THEN we can reply to the NAS.
 146          *      If the accounting module returns NOOP, the data
 147          *      storage did not succeed, so radiusd should not send
 148          *      Accounting-Response.
 149          */
 150         switch (result) {
 151                 /*
 152                  *      Send back an ACK to the NAS.
 153                  */
 154                 case RLM_MODULE_OK:
 155                 case RLM_MODULE_UPDATED:
 156                         request->reply->code = PW_ACCOUNTING_RESPONSE;
 157                         break;
 158                 /*
 159                  *      The module handled the request, don't reply.
 160                  */
 161                 case RLM_MODULE_HANDLED:
 162                         break;
 163                 /*
 164                  *      Failed to log or to proxy the accounting data,
 165                  *      therefore don't reply to the NAS.
 166                  */
 167                 case RLM_MODULE_FAIL:
 168                 case RLM_MODULE_INVALID:
 169                 case RLM_MODULE_NOOP:
 170                 case RLM_MODULE_NOTFOUND:
 171                 case RLM_MODULE_REJECT:
 172                 case RLM_MODULE_USERLOCK:
 173                 default:
 174                         break;
 175         }
 176         return result;
 177 }