fix_lumps.h

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/*
 * $Id: fix_lumps.h 4738 2008-08-25 17:08:36Z henningw $
 *
 * Copyright (C) 2001-2003 FhG Fokus
 *
 * This file is part of Kamailio, a free SIP server.
 *
 * Kamailio is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version
 *
 * Kamailio is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * 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
 *
 * History:
 * -------
 *  2003-11-24  changed free_via_lump to free_via_clen_lump and make it
 *              handle CONTENTLENGTH lumps also (andrei)
 *  2005-07-04  lumps in SHM or dup'ed lumps are not freed and an warning
 *               message is logged (temporary fix) (andrei)
 */

/*!\file
 * \brief TM :: Lump handling
 *
 * Delete message lumps which are generated in core functions
 * using pkg_malloc and applied to shmem requests;
 * not doing so would result ugly memory problems.
 * \ingroup tm
 * - Module: \ref tm
 */


#ifndef _FIX_LUMPS_H
#define _FIX_LUMPS_H

/*!
 * \brief Used to delete attached via lumps from msg
 *
 * A msg can be either an original pkg msg, whose Via lump I want
 * to delete before generating next branch, or a shmem-stored
 * message processed during on_reply -- then I want to
 * delete the Via lump for the same reason.
 * The other case when I want to delete them is when a message
 * is stored in shmem for branch picking, forwarded lated and
 * Via removal is applied to the shmem-ed message.
 * The same thing apply for  Content-Length lumps.
 * \param list list of lumps
   \todo (FIXME: this should be done in a nicer way)
*/
inline static void free_via_clen_lump( struct lump **list )
{
   struct lump *prev_lump, *lump, *a, *foo, *next;

   next=0;
   prev_lump=0;
   for(lump=*list;lump;lump=next) {
      next=lump->next;
      if (lump->type==HDR_VIA_T||lump->type==HDR_CONTENTLENGTH_T) {
         if (lump->flags & (LUMPFLAG_DUPED|LUMPFLAG_SHMEM)){
            LM_CRIT("free_via_clen_lmp: lump %p, flags %x\n",
                  lump, lump->flags);
            /* ty to continue */
         }
         a=lump->before;
         while(a) {
            foo=a; a=a->before;
            if (!(foo->flags&(LUMPFLAG_DUPED|LUMPFLAG_SHMEM)))
               free_lump(foo);
            if (!(foo->flags&LUMPFLAG_SHMEM))
               pkg_free(foo);
         }
         a=lump->after;
         while(a) {
            foo=a; a=a->after;
            if (!(foo->flags&(LUMPFLAG_DUPED|LUMPFLAG_SHMEM)))
               free_lump(foo);
            if (!(foo->flags&LUMPFLAG_SHMEM))
               pkg_free(foo);
         }
         if (prev_lump) prev_lump->next = lump->next;
         else *list = lump->next;
         if (!(lump->flags&(LUMPFLAG_DUPED|LUMPFLAG_SHMEM)))
            free_lump(lump);
         if (!(lump->flags&LUMPFLAG_SHMEM))
            pkg_free(lump);
      } else {
         /* store previous position */
         prev_lump=lump;
      }
   }
}

#endif