/**
 *
 * Copyright (C) 2010 Daniel-Constantin Mierla (asipto.com)
 *
 * This file is part of Kamailio, a free SIP server.
 *
 * This file 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
 *
 *
 * This file 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
 *
 */

#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>

#include "../../core/sr_module.h"
#include "../../core/dprint.h"
#include "../../core/ut.h"
#include "../../core/pvar.h"
#include "../../core/kemi.h"
#include "../../core/mod_fix.h"

#include "geoip_pv.h"

MODULE_VERSION

static char *geoip_path = NULL;

static int mod_init(void);
static void mod_destroy(void);

static int w_geoip_match(struct sip_msg *msg, char *str1, char *str2);
static int geoip_match(sip_msg_t *msg, str *tomatch, str *pvclass);

/* clang-format off */
static pv_export_t mod_pvs[] = {
	{{"gip", sizeof("gip") - 1}, PVT_OTHER, pv_get_geoip, 0,
				pv_parse_geoip_name, 0, 0, 0},
	{{0, 0}, 0, 0, 0, 0, 0, 0, 0}
};


static cmd_export_t cmds[] = {
	{"geoip_match", (cmd_function)w_geoip_match, 2,
		fixup_spve_spve, 0, ANY_ROUTE},
	{0, 0, 0, 0, 0, 0}
};

static param_export_t params[] = {
	{"path", PARAM_STRING, &geoip_path},
	{0, 0, 0}
};

struct module_exports exports = {
	"geoip",		 /* module name */
	DEFAULT_DLFLAGS, /* dlopen flags */
	cmds,			 /* exported functions */
	params,			 /* exported parameters */
	0,				 /* RPC method exports */
	mod_pvs,		 /* exported pseudo-variables */
	0,				 /* response handling function */
	mod_init,		 /* module initialization function */
	0,				 /* per-child init function */
	mod_destroy		 /* module destroy function */
};
/* clang-format on */


/**
 * init module function
 */
static int mod_init(void)
{

	if(geoip_path == NULL || strlen(geoip_path) == 0) {
		LM_ERR("path to GeoIP database file not set\n");
		return -1;
	}

	if(geoip_init_pv(geoip_path) != 0) {
		LM_ERR("cannot init for database file at: %s\n", geoip_path);
		return -1;
	}
	return 0;
}

/**
 * destroy module function
 */
static void mod_destroy(void)
{
	geoip_destroy_pv();
}


static int geoip_match(sip_msg_t *msg, str *tomatch, str *pvclass)
{
	geoip_pv_reset(pvclass);

	return geoip_update_pv(tomatch, pvclass);
}

static int w_geoip_match(sip_msg_t *msg, char *target, char *pvname)
{
	str tomatch = STR_NULL;
	str pvclass = STR_NULL;

	if(msg == NULL) {
		LM_ERR("received null msg\n");
		return -1;
	}

	if(fixup_get_svalue(msg, (gparam_t *)target, &tomatch) < 0) {
		LM_ERR("cannot get the address\n");
		return -1;
	}
	if(fixup_get_svalue(msg, (gparam_t *)pvname, &pvclass) < 0) {
		LM_ERR("cannot get the pv class\n");
		return -1;
	}

	return geoip_match(msg, &tomatch, &pvclass);
}

/**
 *
 */
/* clang-format off */
static sr_kemi_t sr_kemi_geoip_exports[] = {
    { str_init("geoip"), str_init("match"),
        SR_KEMIP_INT, geoip_match,
        { SR_KEMIP_STR, SR_KEMIP_STR, SR_KEMIP_NONE,
            SR_KEMIP_NONE, SR_KEMIP_NONE, SR_KEMIP_NONE }
    },

    { {0, 0}, {0, 0}, 0, NULL, { 0, 0, 0, 0, 0, 0 } }
};
/* clang-format on */

int mod_register(char *path, int *dlflags, void *p1, void *p2)
{
	sr_kemi_modules_add(sr_kemi_geoip_exports);
	return 0;
}
