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111 lines
2.4 KiB
111 lines
2.4 KiB
/*
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* $Id: pua_callback.c,v 1.2 2007/02/20 13:40:09 anca_vamanu Exp $
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*
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* pua module - presence user agent module
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*
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* Copyright (C) 2007 Voice Sistem S.R.L.
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*
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* This file is part of Kamailio, a free SIP server.
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*
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* Kamailio is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version
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*
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* Kamailio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "../../dprint.h"
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#include "../../error.h"
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#include "../../mem/shm_mem.h"
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#include "pua_callback.h"
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struct puacb_head_list* puacb_list = 0;
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int init_puacb_list(void)
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{
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puacb_list = (struct puacb_head_list*)shm_malloc
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( sizeof(struct puacb_head_list) );
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if (puacb_list==0)
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{
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LM_CRIT("no more shared mem\n");
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return -1;
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}
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puacb_list->first = 0;
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puacb_list->reg_types = 0;
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return 1;
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}
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void destroy_puacb_list(void)
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{
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struct pua_callback *cbp, *cbp_tmp;
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if (!puacb_list)
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return;
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for( cbp=puacb_list->first; cbp ; )
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{
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cbp_tmp = cbp;
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cbp = cbp->next;
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if (cbp_tmp->param)
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shm_free( cbp_tmp->param );
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shm_free( cbp_tmp );
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}
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shm_free(puacb_list);
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}
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/* register a callback function 'f' for 'types' mask of events;
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*/
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int register_puacb( int types, pua_cb f, void* param )
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{
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struct pua_callback *cbp;
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/* are the callback types valid?... */
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if ( types<0 || types>PUACB_MAX )
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{
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LM_CRIT("invalid callback types: mask=%d\n",types);
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return E_BUG;
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}
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/* we don't register null functions */
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if (f==0)
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{
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LM_CRIT("null callback function\n");
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return E_BUG;
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}
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/* build a new callback structure */
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if (!(cbp=(struct pua_callback*)shm_malloc(sizeof( struct pua_callback))))
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{
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LM_ERR("out of share mem\n");
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return E_OUT_OF_MEM;
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}
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/* link it into the proper place... */
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cbp->next = puacb_list->first;
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puacb_list->first = cbp;
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puacb_list->reg_types |= types;
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cbp->callback = f;
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cbp->param= param;
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cbp->types = types;
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if (cbp->next)
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cbp->id = cbp->next->id+1;
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else
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cbp->id = 0;
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return 1;
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}
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