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kamailio/modules/siputils/ring.h

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/*
* $Id$
*
* Copyright (C) 2008-2009 1&1 Internet AG
*
* This file is part of SIP-router, a free SIP server.
*
* SIP-router 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
*
* SIP-router 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
*/
/**
* \file
* \brief SIP-utils :: Module with several utiltity functions related to SIP messages handling
* \ingroup siputils
* - Module; \ref siputils
*/
#ifndef RING_H
#define RING_H
#define HASHTABLEBITS 13
#define HASHTABLESIZE (((unsigned int)1) << HASHTABLEBITS)
#define HASHTABLEMASK (HASHTABLESIZE - 1)
#define MAXCALLIDLEN 255
extern gen_lock_t *ring_lock;
/*!
* \brief Inserts callid of message into hashtable
*
* Inserts callid of message into hashtable. Any 183 messages with
* this callid that occur in the next ring_timeout seconds, will be
* converted to 180.
* \param msg SIP message
* \param unused1 unused
* \param unused2 unused
* \return 1 on success, -1 otherwise
*/
int ring_insert_callid(struct sip_msg *msg, char *unused1, char *unused2);
/*!
* \brief Initialize the ring hashtable in shared memory
*/
void ring_init_hashtable(void);
/*!
* \brief Destroy the ring hashtable
*/
void ring_destroy_hashtable(void);
/*!
* \brief Callback function that does the work inside the server.
* \param msg SIP message
* \param flags unused
* \param bar unused
* \return 1 on success, -1 on failure
*/
int ring_filter(struct sip_msg *msg, unsigned int flags, void *bar);
/*!
* \brief Fixup function for the ring_insert_callid function
* \param param unused
* \param param_no unused
* \return 0
*/
int ring_fixup(void ** param, int param_no);
#endif