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kamailio/nonsip_hooks.c

133 lines
3.0 KiB

/*
* $Id$
*
* Copyright (C) 2006 iptelorg GmbH
*
* This file is part of ser, a free SIP server.
*
* ser 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
*
* For a license to use the ser software under conditions
* other than those described here, or to purchase support for this
* software, please contact iptel.org by e-mail at the following addresses:
* info@iptel.org
*
* ser 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
*/
/*
* non-sip callbacks, called whenever a message with protocol != SIP/2.0
* is received (the message must have at least a sip like first line or
* else they will be dropped before this callbacks are called
*/
/*
* History:
* --------
* 2006-11-29 created by andrei
*/
/*!
* \file
* \brief SIP-router core ::
* \ingroup core
* Module: \ref core
*/
#include "nonsip_hooks.h"
#include "mem/mem.h"
static struct nonsip_hook* nonsip_hooks;
static unsigned int nonsip_max_hooks=MAX_NONSIP_HOOKS;
static int last_hook_idx=0;
int init_nonsip_hooks()
{
nonsip_hooks=pkg_malloc(nonsip_max_hooks*
sizeof(struct nonsip_hook));
if (nonsip_hooks==0){
goto error;
}
memset(nonsip_hooks, 0, nonsip_max_hooks*sizeof(struct nonsip_hook));
return 0;
error:
LOG(L_ERR, "nonsip_hooks: memory allocation failure\n");
return -1;
}
void destroy_nonsip_hooks()
{
int r;
if (nonsip_hooks){
for (r=0; r<last_hook_idx; r++){
if (nonsip_hooks[r].destroy)
nonsip_hooks[r].destroy();
}
pkg_free(nonsip_hooks);
nonsip_hooks=0;
}
}
/* allocates a new hook
* returns 0 on success and -1 on error */
int register_nonsip_msg_hook(struct nonsip_hook *h)
{
struct nonsip_hook* tmp;
int new_max_hooks;
if (nonsip_max_hooks==0)
goto error;
if (last_hook_idx >= nonsip_max_hooks){
new_max_hooks=2*nonsip_max_hooks;
tmp=pkg_realloc(nonsip_hooks,
new_max_hooks*sizeof(struct nonsip_hook));
if (tmp==0){
goto error;
}
nonsip_hooks=tmp;
/* init the new chunk */
memset(&nonsip_hooks[last_hook_idx+1], 0,
(new_max_hooks-nonsip_max_hooks-1)*
sizeof(struct nonsip_hook));
nonsip_max_hooks=new_max_hooks;
}
nonsip_hooks[last_hook_idx]=*h;
last_hook_idx++;
return 0;
error:
return -1;
}
int nonsip_msg_run_hooks(struct sip_msg* msg)
{
int r;
int ret;
ret=NONSIP_MSG_DROP; /* default, if no hook installed, drop */
for (r=0; r<last_hook_idx; r++){
ret=nonsip_hooks[r].on_nonsip_req(msg);
if (ret!=NONSIP_MSG_PASS) break;
}
return ret;
}