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#include "first.h"
#include "plugin.h"
#ifdef HAVE_GEOIP
#include <GeoIP.h>
#include <GeoIPCity.h>
#include "base.h"
#include "log.h"
#include "buffer.h"
#include <stdlib.h>
#include <string.h>
/**
*
* $mod_geoip.c (v2.0) (13.09.2006 00:29:11)
*
* Name:
* mod_geoip.c
*
* Description:
* GeoIP module (plugin) for lighttpd.
* the module loads a geoip database of type "country" or "city" and
* sets new ENV vars based on ip record lookups.
*
* country db env's:
* GEOIP_COUNTRY_CODE
* GEOIP_COUNTRY_CODE3
* GEOIP_COUNTRY_NAME
*
* city db env's:
* GEOIP_COUNTRY_CODE
* GEOIP_COUNTRY_CODE3
* GEOIP_COUNTRY_NAME
* GEOIP_CITY_NAME
* GEOIP_CITY_POSTAL_CODE
* GEOIP_CITY_LATITUDE
* GEOIP_CITY_LONG_LATITUDE
* GEOIP_CITY_DMA_CODE
* GEOIP_CITY_AREA_CODE
*
* Usage (configuration options):
* geoip.db-filename = <path to the geoip or geocity database>
* geoip.memory-cache = <enable|disable> : default disabled
* if enabled, mod_geoip will load the database binary file to
* memory for very fast lookups. the only penalty is memory usage.
*
* Author:
* Ami E. Bizamcher (amix)
* duke.amix@gmail.com
*
* Note:
* GeoIP Library and API must be installed!
*/
/* plugin config for all request/connections */
typedef struct {
unsigned short mem_cache;
buffer *db_name;
GeoIP *gi;
} plugin_config;
typedef struct {
PLUGIN_DATA;
plugin_config **config_storage;
plugin_config conf;
} plugin_data;
/* init the plugin data */
INIT_FUNC(mod_geoip_init) {
plugin_data *p;
p = calloc(1, sizeof(*p));
return p;
}
/* destroy the plugin data */
FREE_FUNC(mod_geoip_free) {
plugin_data *p = p_d;
UNUSED(srv);
if (!p) return HANDLER_GO_ON;
if (p->config_storage) {
size_t i;
for (i = 0; i < srv->config_context->used; i++) {
plugin_config *s = p->config_storage[i];
if (!s) continue;
buffer_free(s->db_name);
/* clean up */
if (s->gi) GeoIP_delete(s->gi);
free(s);
}
free(p->config_storage);
}
free(p);
return HANDLER_GO_ON;
}
/* handle plugin config and check values */
SETDEFAULTS_FUNC(mod_geoip_set_defaults) {
plugin_data *p = p_d;
size_t i = 0;
config_values_t cv[] = {
{ "geoip.db-filename", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION }, /* 0 */
{ "geoip.memory-cache", NULL, T_CONFIG_BOOLEAN, T_CONFIG_SCOPE_CONNECTION }, /* 1 */
{ NULL, NULL, T_CONFIG_UNSET, T_CONFIG_SCOPE_UNSET }
};
if (!p) return HANDLER_ERROR;
p->config_storage = calloc(1, srv->config_context->used * sizeof(specific_config *));
for (i = 0; i < srv->config_context->used; i++) {
data_config const* config = (data_config const*)srv->config_context->data[i];
plugin_config *s;
int mode;
s = calloc(1, sizeof(plugin_config));
s->db_name = buffer_init();
s->mem_cache = 0; /* default: do not load db to cache */
s->gi = NULL;
cv[0].destination = s->db_name;
cv[1].destination = &(s->mem_cache);
p->config_storage[i] = s;
if (0 != config_insert_values_global(srv, config->value, cv, i == 0 ? T_CONFIG_SCOPE_SERVER : T_CONFIG_SCOPE_CONNECTION)) {
return HANDLER_ERROR;
}
mode = GEOIP_STANDARD | GEOIP_CHECK_CACHE;
/* country db filename is requeried! */
if (!buffer_is_empty(s->db_name)) {
/* let's start cooking */
if (s->mem_cache != 0)
mode = GEOIP_MEMORY_CACHE | GEOIP_CHECK_CACHE;
if (NULL == (s->gi = GeoIP_open(s->db_name->ptr, mode))) {
log_error_write(srv, __FILE__, __LINE__, "s",
"failed to open GeoIP database!!!");
return HANDLER_ERROR;
}
/* is the db supported ? */
if (s->gi->databaseType != GEOIP_COUNTRY_EDITION &&
s->gi->databaseType != GEOIP_CITY_EDITION_REV0 &&
s->gi->databaseType != GEOIP_CITY_EDITION_REV1) {
log_error_write(srv, __FILE__, __LINE__, "s",
"GeoIP database is of unsupported type!!!");
}
}
}
return HANDLER_GO_ON;
}
#define PATCH(x) \
p->conf.x = s->x;
static int mod_geoip_patch_connection(server *srv, connection *con, plugin_data *p) {
size_t i, j;
plugin_config *s = p->config_storage[0];
PATCH(db_name);
PATCH(mem_cache);
PATCH(gi);
/* skip the first, the global context */
for (i = 1; i < srv->config_context->used; i++) {
data_config *dc = (data_config *)srv->config_context->data[i];
s = p->config_storage[i];
/* condition didn't match */
if (!config_check_cond(srv, con, dc)) continue;
/* merge config */
for (j = 0; j < dc->value->used; j++) {
data_unset *du = dc->value->data[j];
if (buffer_is_equal_string(du->key, CONST_STR_LEN("geoip.db-filename"))) {
PATCH(db_name);
}
if (buffer_is_equal_string(du->key, CONST_STR_LEN("geoip.memory-cache"))) {
PATCH(mem_cache);
}
}
}
return 0;
}
#undef PATCH
URIHANDLER_FUNC(mod_geoip_subrequest) {
plugin_data *p = p_d;
mod_geoip_patch_connection(srv, con, p);
if (!buffer_is_empty(p->conf.db_name)) {
const char *remote_ip;
data_string *ds;
GeoIPRecord *gir;
const char *returnedCountry;
remote_ip = con->dst_addr_buf->ptr;
if (p->conf.gi->databaseType == GEOIP_COUNTRY_EDITION) {
/* get the country code 2 chars */
if (NULL == (ds = (data_string *)array_get_element(con->environment, "GEOIP_COUNTRY_CODE"))) {
if (NULL != (returnedCountry = GeoIP_country_code_by_addr(p->conf.gi, remote_ip))) {
if (NULL == (ds = (data_string *)array_get_unused_element(con->environment, TYPE_STRING))) {
ds = data_string_init();
}
buffer_copy_string(ds->key, "GEOIP_COUNTRY_CODE");
buffer_copy_string(ds->value, returnedCountry);
array_insert_unique(con->environment, (data_unset *)ds);
}
}
/* get the country code 3 chars */
if (NULL == (ds = (data_string *)array_get_element(con->environment, "GEOIP_COUNTRY_CODE3"))) {
if (NULL != (returnedCountry = GeoIP_country_code3_by_addr(p->conf.gi, remote_ip))) {
if (NULL == (ds = (data_string *)array_get_unused_element(con->environment, TYPE_STRING))) {
ds = data_string_init();
}
buffer_copy_string(ds->key, "GEOIP_COUNTRY_CODE3");
buffer_copy_string(ds->value, returnedCountry);
array_insert_unique(con->environment, (data_unset *)ds);
}
}
/* get the country name */
if (NULL == (ds = (data_string *)array_get_element(con->environment, "GEOIP_COUNTRY_NAME"))) {
if (NULL != (returnedCountry = GeoIP_country_name_by_addr(p->conf.gi, remote_ip))) {
if (NULL == (ds = (data_string *)array_get_unused_element(con->environment, TYPE_STRING))) {
ds = data_string_init();
}
buffer_copy_string(ds->key, "GEOIP_COUNTRY_NAME");
buffer_copy_string(ds->value, returnedCountry);
array_insert_unique(con->environment, (data_unset *)ds);
}
}
/* go on... */
return HANDLER_GO_ON;
}
/* if we are here, geo city is in use */
if (NULL != (gir = GeoIP_record_by_addr(p->conf.gi, remote_ip))) {
/* get the country code 2 chars */
if (NULL == (ds = (data_string *)array_get_element(con->environment, "GEOIP_COUNTRY_CODE"))) {
if (NULL == (ds = (data_string *)array_get_unused_element(con->environment, TYPE_STRING))) {
ds = data_string_init();
}
buffer_copy_string(ds->key, "GEOIP_COUNTRY_CODE");
buffer_copy_string(ds->value, gir->country_code);
array_insert_unique(con->environment, (data_unset *)ds);
}
/* get the country code 3 chars */
if (NULL == (ds = (data_string *)array_get_element(con->environment, "GEOIP_COUNTRY_CODE3"))) {
if (NULL == (ds = (data_string *)array_get_unused_element(con->environment, TYPE_STRING))) {
ds = data_string_init();
}
buffer_copy_string(ds->key, "GEOIP_COUNTRY_CODE3");
buffer_copy_string(ds->value, gir->country_code3);
array_insert_unique(con->environment, (data_unset *)ds);
}
/* get the country name */
if (NULL == (ds = (data_string *)array_get_element(con->environment, "GEOIP_COUNTRY_NAME"))) {
if (NULL == (ds = (data_string *)array_get_unused_element(con->environment, TYPE_STRING))) {
ds = data_string_init();
}
buffer_copy_string(ds->key, "GEOIP_COUNTRY_NAME");
buffer_copy_string(ds->value, gir->country_name);
array_insert_unique(con->environment, (data_unset *)ds);
}
/* get the city region */
if (NULL == (ds = (data_string *)array_get_element(con->environment, "GEOIP_CITY_REGION"))) {
if (NULL == (ds = (data_string *)array_get_unused_element(con->environment, TYPE_STRING))) {
ds = data_string_init();
}
buffer_copy_string(ds->key, "GEOIP_CITY_REGION");
buffer_copy_string(ds->value, gir->region);
array_insert_unique(con->environment, (data_unset *)ds);
}
/* get the city */
if (NULL == (ds = (data_string *)array_get_element(con->environment, "GEOIP_CITY_NAME"))) {
if (NULL == (ds = (data_string *)array_get_unused_element(con->environment, TYPE_STRING))) {
ds = data_string_init();
}
buffer_copy_string(ds->key, "GEOIP_CITY_NAME");
buffer_copy_string(ds->value, gir->city);
array_insert_unique(con->environment, (data_unset *)ds);
}
/* get the postal code */
if (NULL == (ds = (data_string *)array_get_element(con->environment, "GEOIP_CITY_POSTAL_CODE"))) {
if (NULL == (ds = (data_string *)array_get_unused_element(con->environment, TYPE_STRING))) {
ds = data_string_init();
}
buffer_copy_string(ds->key, "GEOIP_CITY_POSTAL_CODE");
buffer_copy_string(ds->value, gir->postal_code);
array_insert_unique(con->environment, (data_unset *)ds);
}
/* get the latitude */
if (NULL == (ds = (data_string *)array_get_element(con->environment, "GEOIP_CITY_LATITUDE"))) {
char latitude[32];
if (NULL == (ds = (data_string *)array_get_unused_element(con->environment, TYPE_STRING))) {
ds = data_string_init();
}
snprintf(latitude, sizeof(latitude), "%f", gir->latitude);
buffer_copy_string(ds->key, "GEOIP_CITY_LATITUDE");
buffer_copy_string(ds->value, latitude);
array_insert_unique(con->environment, (data_unset *)ds);
}
/* get the long latitude */
if (NULL == (ds = (data_string *)array_get_element(con->environment, "GEOIP_CITY_LONG_LATITUDE"))) {
char long_latitude[32];
if (NULL == (ds = (data_string *)array_get_unused_element(con->environment, TYPE_STRING))) {
ds = data_string_init();
}
snprintf(long_latitude, sizeof(long_latitude), "%f", gir->longitude);
buffer_copy_string(ds->key, "GEOIP_CITY_LONG_LATITUDE");
buffer_copy_string(ds->value, long_latitude);
array_insert_unique(con->environment, (data_unset *)ds);
}
/* get the dma code */
if (NULL == (ds = (data_string *)array_get_element(con->environment, "GEOIP_CITY_DMA_CODE"))) {
char dc[5];
if (NULL == (ds = (data_string *)array_get_unused_element(con->environment, TYPE_STRING))) {
ds = data_string_init();
}
snprintf(dc, sizeof(dc), "%i", gir->dma_code);
buffer_copy_string(ds->key, "GEOIP_CITY_DMA_CODE");
buffer_copy_string(ds->value, dc);
array_insert_unique(con->environment, (data_unset *)ds);
}
/* get the area code */
if (NULL == (ds = (data_string *)array_get_element(con->environment, "GEOIP_CITY_AREA_CODE"))) {
char ac[5];
if (NULL == (ds = (data_string *)array_get_unused_element(con->environment, TYPE_STRING))) {
ds = data_string_init();
}
snprintf(ac, sizeof(ac), "%i", gir->area_code);
buffer_copy_string(ds->key, "GEOIP_CITY_AREA_CODE");
buffer_copy_string(ds->value, ac);
array_insert_unique(con->environment, (data_unset *)ds);
}
GeoIPRecord_delete(gir);
}
}
/* keep walking... (johnnie walker style ;) */
return HANDLER_GO_ON;
}
/* this function is called at dlopen() time and inits the callbacks */
int mod_geoip_plugin_init(plugin *p);
int mod_geoip_plugin_init(plugin *p) {
p->version = LIGHTTPD_VERSION_ID;
p->name = buffer_init_string("geoip");
p->init = mod_geoip_init;
p->handle_subrequest_start = mod_geoip_subrequest;
p->set_defaults = mod_geoip_set_defaults;
p->cleanup = mod_geoip_free;
p->data = NULL;
return 0;
}
#else
int mod_geoip_plugin_init(plugin *p);
int mod_geoip_plugin_init(plugin *p) {
UNUSED(p);
return -1;
}
#endif