/*

 * Copyright (C) 2016 - OpenSIPS Solutions

 *

 * This file is part of opensips, a free SIP server.

 *

 * opensips 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

 *

 * opensips 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

 *

 *

 * History:

 * -------

 *  2016-09-19  first version (Ionut Ionita)

 */

#ifndef _mi_trace_h

#define _mi_trace_h

#include "../trace_api.h"

extern trace_proto_t* mi_trace_api;

extern int correlation_id, correlation_vendor;

extern str correlation_value;

#define MAX_TRACE_FIELD (1 << 7)

struct mi_trace_req {

  str cmd;

  str backend;

  char params[MAX_TRACE_FIELD];

};

extern str mi_trpl;

enum mi_trace_type { MI_TRACE_REQ, MI_TRACE_RPL};

struct mi_trace_param {

  enum mi_trace_type type;

  union {

    struct mi_trace_req* req;

    str *rpl;

  } d;

};

extern struct mi_trace_param mi_tparam;

void try_load_trace_api(void);

int trace_mi_message(const union sockaddr_union* src, const union sockaddr_union* dst,

  struct mi_trace_param* pld_param, str* correlation_value, trace_dest trace_dst);

struct mi_trace_req* build_mi_trace_request(str *cmd, mi_item_t *params,

                    str* backend);

str *build_mi_trace_reply(str *rpl_msg);

char* generate_correlation_id(int* len);;

int load_correlation_id(void);

static inline void mi_trace_reply( const union sockaddr_union* src, const union sockaddr_union* dst,

    str* message, trace_dest t_dst)

{

  /* trace disabled */

  if ( !t_dst )

    return;

  if (!message) {

    LM_ERR("Empty MI reply!\n");

    return;

  }

  mi_tparam.d.rpl = build_mi_trace_reply(message);

  mi_tparam.type = MI_TRACE_RPL;

  if ( !correlation_value.s ) {

    LM_ERR("can't find correlation id generated by the request!\n");

    return;

  }

  if (trace_mi_message( src, dst, &mi_tparam, &correlation_value, t_dst) < 0) {

    LM_ERR("failed to trace mi command reply!\n");

  }

}

static inline void mi_trace_request( const union sockaddr_union* src, const union sockaddr_union* dst,

    char* command, int len, mi_item_t *params, str* backend, trace_dest t_dst )

{

  str comm_s = { command, len };

  if ( !t_dst || !backend )

    return;

  mi_tparam.d.req = build_mi_trace_request( &comm_s, params, backend);

  if (!mi_tparam.d.req) {

    LM_ERR("Failed to prepare payload for tracing request\n");

    return;

  }

  mi_tparam.type = MI_TRACE_REQ;

  correlation_value.s = generate_correlation_id(&correlation_value.len);

  if ( !correlation_value.s ) {

    LM_ERR("failed to generate correlation id!\n");

    return;

  }

  if (trace_mi_message( src, dst, &mi_tparam, &correlation_value, t_dst) < 0) {

    LM_ERR("failed to trace mi command request!\n");

  }

}

int register_mi_trace_mod(void);

int init_mod_trace_cmds(int id, int white);

int block_mi_cmd_trace(int id, char* name, int len);

int allow_mi_cmd_trace(int id, char* name, int len);

unsigned char is_mi_cmd_traced(int id, struct mi_cmd* cmd);

int parse_mi_cmd_bwlist(int id, char* bw_string, int len);

#endif