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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* SPDX-License-Identifier: MPL-2.0
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
/*! \file */
#if defined(HAVE_GEOIP2)
#include <maxminddb.h>
#endif /* if defined(HAVE_GEOIP2) */
#include <isc/dir.h>
#include <isc/print.h>
#include <isc/string.h>
#include <isc/util.h>
#include <dns/geoip.h>
#include <named/geoip.h>
#include <named/log.h>
static dns_geoip_databases_t geoip_table;
#if defined(HAVE_GEOIP2)
static MMDB_s geoip_country, geoip_city, geoip_as, geoip_isp, geoip_domain;
static MMDB_s *
open_geoip2(const char *dir, const char *dbfile, MMDB_s *mmdb) {
char pathbuf[PATH_MAX];
unsigned int n;
int ret;
n = snprintf(pathbuf, sizeof(pathbuf), "%s/%s", dir, dbfile);
if (n >= sizeof(pathbuf)) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_ERROR,
"GeoIP2 database '%s/%s': path too long", dir,
dbfile);
return (NULL);
}
ret = MMDB_open(pathbuf, MMDB_MODE_MMAP, mmdb);
if (ret == MMDB_SUCCESS) {
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"opened GeoIP2 database '%s'", pathbuf);
return (mmdb);
}
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_DEBUG(1),
"unable to open GeoIP2 database '%s' (status %d)",
pathbuf, ret);
return (NULL);
}
#endif /* HAVE_GEOIP2 */
void
named_geoip_init(void) {
#if defined(HAVE_GEOIP2)
if (named_g_geoip == NULL) {
named_g_geoip = &geoip_table;
}
#else /* if defined(HAVE_GEOIP2) */
return;
#endif /* if defined(HAVE_GEOIP2) */
}
void
named_geoip_load(char *dir) {
#if defined(HAVE_GEOIP2)
REQUIRE(dir != NULL);
isc_log_write(named_g_lctx, NAMED_LOGCATEGORY_GENERAL,
NAMED_LOGMODULE_SERVER, ISC_LOG_INFO,
"looking for GeoIP2 databases in '%s'", dir);
named_g_geoip->country = open_geoip2(dir, "GeoIP2-Country.mmdb",
&geoip_country);
if (named_g_geoip->country == NULL) {
named_g_geoip->country = open_geoip2(
dir, "GeoLite2-Country.mmdb", &geoip_country);
}
named_g_geoip->city = open_geoip2(dir, "GeoIP2-City.mmdb", &geoip_city);
if (named_g_geoip->city == NULL) {
named_g_geoip->city = open_geoip2(dir, "GeoLite2-City.mmdb",
&geoip_city);
}
named_g_geoip->as = open_geoip2(dir, "GeoIP2-ASN.mmdb", &geoip_as);
if (named_g_geoip->as == NULL) {
named_g_geoip->as = open_geoip2(dir, "GeoLite2-ASN.mmdb",
&geoip_as);
}
named_g_geoip->isp = open_geoip2(dir, "GeoIP2-ISP.mmdb", &geoip_isp);
named_g_geoip->domain = open_geoip2(dir, "GeoIP2-Domain.mmdb",
&geoip_domain);
#else /* if defined(HAVE_GEOIP2) */
UNUSED(dir);
return;
#endif /* if defined(HAVE_GEOIP2) */
}
void
named_geoip_unload(void) {
#ifdef HAVE_GEOIP2
if (named_g_geoip->country != NULL) {
MMDB_close(named_g_geoip->country);
named_g_geoip->country = NULL;
}
if (named_g_geoip->city != NULL) {
MMDB_close(named_g_geoip->city);
named_g_geoip->city = NULL;
}
if (named_g_geoip->as != NULL) {
MMDB_close(named_g_geoip->as);
named_g_geoip->as = NULL;
}
if (named_g_geoip->isp != NULL) {
MMDB_close(named_g_geoip->isp);
named_g_geoip->isp = NULL;
}
if (named_g_geoip->domain != NULL) {
MMDB_close(named_g_geoip->domain);
named_g_geoip->domain = NULL;
}
#endif /* ifdef HAVE_GEOIP2 */
}
void
named_geoip_shutdown(void) {
#ifdef HAVE_GEOIP2
named_geoip_unload();
#endif /* HAVE_GEOIP2 */
}
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