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Diffstat (limited to '')
| -rw-r--r-- | bin/named/geoip.c | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/bin/named/geoip.c b/bin/named/geoip.c new file mode 100644 index 0000000..9963ca8 --- /dev/null +++ b/bin/named/geoip.c @@ -0,0 +1,146 @@ +/* + * 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/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 */ +} |