src/modules/geoip/geoip_mod.c
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 /**
  *
  * 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
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  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
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  *
  */
 
 #include <stdio.h>
 #include <unistd.h>
 #include <stdlib.h>
 #include <string.h>
 
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 #include "../../core/sr_module.h"
 #include "../../core/dprint.h"
 #include "../../core/ut.h"
 #include "../../core/pvar.h"
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 #include "../../core/kemi.h"
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 #include "../../core/mod_fix.h"
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 #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);
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 static int geoip_match(sip_msg_t *msg, str *tomatch, str *pvclass);
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 static pv_export_t mod_pvs[] = {
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 	{ {"gip", sizeof("gip")-1}, PVT_OTHER, pv_get_geoip, 0,
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 		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[]={
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 	{"path",     PARAM_STRING, &geoip_path},
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 	{0, 0, 0}
 };
 
 struct module_exports exports = {
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 	"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 */
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 };
 
 
 /**
  * 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();
 }
 
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 static int geoip_match(sip_msg_t *msg, str *tomatch, str *pvclass)
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 {
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 	geoip_pv_reset(pvclass);
 
 	return geoip_update_pv(tomatch, pvclass);
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 }
 
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 static int w_geoip_match(sip_msg_t* msg, char* target, char* pvname)
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 {
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 	str tomatch = STR_NULL;
 	str pvclass = STR_NULL;
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 	if(msg==NULL) {
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 		LM_ERR("received null msg\n");
 		return -1;
 	}
 
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 	if(fixup_get_svalue(msg, (gparam_t*)target, &tomatch)<0) {
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 		LM_ERR("cannot get the address\n");
 		return -1;
 	}
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 	if(fixup_get_svalue(msg, (gparam_t*)pvname, &pvclass)<0) {
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 		LM_ERR("cannot get the pv class\n");
 		return -1;
 	}
 
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 	return geoip_match(msg, &tomatch, &pvclass);
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 }
 
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 /**
  *
  */
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 /* clang-format off */
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 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 } }
 };
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 /* clang-format on */
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 int mod_register(char *path, int *dlflags, void *p1, void *p2) {
     sr_kemi_modules_add(sr_kemi_geoip_exports);
     return 0;
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 }