sctp_core.c
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 /*
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  * Copyright (C) 2013 Daniel-Constantin Mierla (asipto.com)
  *
  * This file is part of Kamailio, a free SIP server.
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
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 /*!
  * \file
  * \brief Kamailio core :: SCTP support
  * \ingroup core
  * Module: \ref core
  */
 
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 #include "sctp_core.h"
 
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 /**
  *
  */
 static sctp_srapi_t _sctp_srapi = { 0 };
 static int _sctp_srapi_set = 0;
 
 /**
  *
  */
 int sctp_core_init(void)
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 {
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 	if(_sctp_srapi_set==0) {
 		LM_ERR("SCTP API not initialized\n");
 		return -1;
 	}
 
 	return _sctp_srapi.init();
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 }
 
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 /**
  *
  */
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 void sctp_core_destroy(void)
 {
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 	if(_sctp_srapi_set==0) {
 		LM_INFO("SCTP API not initialized\n");
 		return;
 	}
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 	_sctp_srapi.destroy();
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 }
 
 /**
  *
  */
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 int sctp_core_init_sock(struct socket_info* sock_info)
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 {
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 	return _sctp_srapi.init_sock(sock_info);
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 }
 
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 /**
  *
  */
 int sctp_core_check_support(void)
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 {
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 	if(_sctp_srapi_set==0) {
 		LM_INFO("SCTP API not enabled"
 				" - if you want to use it, load sctp module\n");
 		return -1;
 	}
 
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 	return _sctp_srapi.check_support();
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 }
 
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 /**
  *
  */
 int sctp_core_rcv_loop(void)
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 {
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 	return _sctp_srapi.rcv_loop();
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 }
 
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 /**
  *
  */
 int sctp_core_msg_send(struct dest_info* dst, char* buf, unsigned len)
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 {
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 	return _sctp_srapi.msg_send(dst, buf, len);
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 }
 
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 /**
  *
  */
 int sctp_core_register_api(sctp_srapi_t *api)
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 {
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 	if(api==NULL || api->init==NULL) {
 		LM_ERR("invalid parameters\n");
 		return -1;
 	}
 	if(_sctp_srapi_set==1) {
 		LM_ERR("SCTP API already initialized\n");
 		return -1;
 	}
 	_sctp_srapi_set = 1;
 	memcpy(&_sctp_srapi, api, sizeof(sctp_srapi_t));
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 	return 0;
 }