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kamailio/modules/erlang/erl_api.h

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2.8 KiB

/**
* Copyright (C) 2015 Bicom Systems Ltd, (bicomsystems.com)
*
* Author: Seudin Kasumovic (seudin.kasumovic@gmail.com)
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifndef ERL_API_H_
#define ERL_API_H_
#include "../../sr_module.h"
#include "../../str.h"
#include "../../xavp.h"
#include <ei.h>
typedef int (*erl_rpc_f)(ei_x_buff* reply, const str *module,const str *function, const ei_x_buff *args);
typedef int (*erl_reg_send_f)(const str *server,const ei_x_buff *msg);
typedef int (*erl_reply_f)(const ei_x_buff *msg);
typedef int (*erl_send_f)(const erlang_pid *pid,const ei_x_buff *msg);
/* data serialization */
typedef int (*xavp2xbuff_f)(ei_x_buff *xbuff, sr_xavp_t *xavp);
typedef int (*xbuff2xavp_f)(sr_xavp_t **xavp, ei_x_buff *xbuff);
typedef struct erl_api_s {
erl_rpc_f rpc;
erl_reg_send_f reg_send;
erl_send_f send;
erl_reply_f reply;
xavp2xbuff_f xavp2xbuff;
xbuff2xavp_f xbuff2xavp;
} erl_api_t;
typedef int (*load_erl_f)( erl_api_t* );
/*!
* \brief API bind function exported by the module - it will load the other functions
* \param erl_api Erlang API export binding
* \return 1
*/
int load_erl( erl_api_t *erl_api );
/*!
* \brief Function to be called directly from other modules to load the Erlang API
* \param erl_api Erlang API export binding
* \return 0 on success, -1 if the API loader could not imported
*/
inline static int erl_load_api( erl_api_t *erl_api )
{
load_erl_f load_erl_v;
/* import the Erlang API auto-loading function */
if ( !(load_erl_v=(load_erl_f)find_export("load_erl", 0, 0))) {
LM_ERR("failed to import load_erl\n");
return -1;
}
/* let the auto-loading function load all Erlang stuff */
load_erl_v( erl_api );
return 0;
}
/**
* debugging macro
* uses LM_DBG to print ei_x_buff
*/
#define EI_X_BUFF_PRINT(buf) \
do{ \
char *mbuf = NULL; \
int i = 0, v=0; \
ei_decode_version((buf)->buff,&i,&v);\
i=v?i:0; \
ei_s_print_term(&mbuf, (buf)->buff, &i); \
LM_DBG(#buf": %s\n", mbuf); \
free(mbuf); \
} while(0)
#endif /* ERL_API_H_ */