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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* Cherokee
*
* Authors:
* Alvaro Lopez Ortega <alvaro@alobbs.com>
*
* Copyright (C) 2001-2011 Alvaro Lopez Ortega
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*
* This program 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 "common-internal.h"
#include "rule_geoip.h"
#include "plugin_loader.h"
#include "virtual_server.h"
#include "socket.h"
#include "connection-protected.h"
#include "util.h"
#define ENTRIES "rule,geoip"
#define MAGIC 0XDEADBEEF
PLUGIN_INFO_RULE_EASIEST_INIT(geoip);
/* Specific plug-in functions
*/
static GeoIP *_geoip = NULL;
static cuint_t _geoip_refs = 0;
static GeoIP *
geoip_get (void)
{
int i;
GeoIP *gi;
/* Return the global if it's ready
*/
if (likely (_geoip != NULL)) {
_geoip_refs += 1;
return _geoip;
}
/* Try to open a GeoIP database
*/
for (i = 0; i < NUM_DB_TYPES; ++i) {
if (GeoIP_db_avail(i)) {
gi = GeoIP_open_type (i, GEOIP_STANDARD);
if (gi != NULL) {
_geoip = gi;
_geoip_refs += 1;
return _geoip;
}
}
}
return NULL;
}
static void
geoip_release (void)
{
_geoip_refs -= 1;
if (_geoip_refs <= 0) {
GeoIP_delete (_geoip);
_geoip = NULL;
}
}
/* The rule itself
*/
static ret_t
match (cherokee_rule_t *rule_,
cherokee_connection_t *conn,
cherokee_config_entry_t *ret_conf)
{
ret_t ret;
void *foo;
const char *country;
cherokee_rule_geoip_t *rule = RULE_GEOIP(rule_);
UNUSED(ret_conf);
country = GeoIP_country_code_by_ipnum (rule->geoip, SOCKET_ADDRESS_IPv4(&conn->socket));
if (country == NULL) {
TRACE(ENTRIES, "Rule geoip did found the country for ip='%lu'\n",
SOCKET_ADDRESS_IPv4(&conn->socket));
return ret_not_found;
}
ret = cherokee_avl_get_ptr (&rule->countries, country, &foo);
if (ret != ret_ok) {
TRACE(ENTRIES, "Rule geoip did not match '%s'\n", country);
return ret;
}
TRACE(ENTRIES, "Match geoip did match: '%s'\n", country);
return ret_ok;
}
static ret_t
parse_contry_list (cherokee_buffer_t *value, cherokee_avl_t *countries)
{
char *val;
char *tmpp;
cherokee_buffer_t tmp = CHEROKEE_BUF_INIT;
TRACE(ENTRIES, "Adding geoip countries: '%s'\n", value->buf);
cherokee_buffer_add_buffer (&tmp, value);
tmpp = tmp.buf;
while ((val = strsep(&tmpp, ",")) != NULL) {
TRACE(ENTRIES, "Adding country: '%s'\n", val);
cherokee_avl_add_ptr (countries, val, (void *)MAGIC);
}
cherokee_buffer_mrproper (&tmp);
return ret_ok;
}
static ret_t
configure (cherokee_rule_geoip_t *rule,
cherokee_config_node_t *conf,
cherokee_virtual_server_t *vsrv)
{
ret_t ret;
cherokee_buffer_t *tmp = NULL;
UNUSED(vsrv);
ret = cherokee_config_node_read (conf, "countries", &tmp);
if (ret != ret_ok) {
LOG_CRITICAL (CHEROKEE_ERROR_RULE_NO_PROPERTY,
RULE(rule)->priority, "geoip");
return ret_error;
}
return parse_contry_list (tmp, &rule->countries);
}
static ret_t
_free (void *p)
{
cherokee_rule_geoip_t *rule = RULE_GEOIP(p);
if (rule->geoip) {
geoip_release();
}
return ret_ok;
}
ret_t
cherokee_rule_geoip_new (cherokee_rule_t **rule)
{
CHEROKEE_NEW_STRUCT (n, rule_geoip);
/* Parent class constructor
*/
cherokee_rule_init_base (RULE(n), PLUGIN_INFO_PTR(geoip));
/* Virtual methods
*/
RULE(n)->match = (rule_func_match_t) match;
RULE(n)->configure = (rule_func_configure_t) configure;
MODULE(n)->free = (module_func_free_t) _free;
/* Properties
*/
n->geoip = geoip_get();
if (n->geoip == NULL)
return ret_error;
cherokee_avl_init (&n->countries);
*rule = RULE(n);
return ret_ok;
}
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