429 lines
10 KiB
C
429 lines
10 KiB
C
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/*
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* Copyright (C) Igor Sysoev
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*/
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#include <ngx_config.h>
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#include <ngx_core.h>
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#include <ngx_http.h>
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#include <GeoIP.h>
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#include <GeoIPCity.h>
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typedef struct {
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GeoIP *country;
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GeoIP *city;
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} ngx_http_geoip_conf_t;
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typedef struct {
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ngx_str_t *name;
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uintptr_t data;
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} ngx_http_geoip_var_t;
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typedef const char *(*ngx_http_geoip_variable_handler_pt)(GeoIP *, u_long addr);
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static ngx_int_t ngx_http_geoip_country_variable(ngx_http_request_t *r,
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ngx_http_variable_value_t *v, uintptr_t data);
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static ngx_int_t ngx_http_geoip_city_variable(ngx_http_request_t *r,
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ngx_http_variable_value_t *v, uintptr_t data);
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static ngx_int_t ngx_http_geoip_city_float_variable(ngx_http_request_t *r,
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ngx_http_variable_value_t *v, uintptr_t data);
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static GeoIPRecord *ngx_http_geoip_get_city_record(ngx_http_request_t *r);
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static ngx_int_t ngx_http_geoip_add_variables(ngx_conf_t *cf);
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static void *ngx_http_geoip_create_conf(ngx_conf_t *cf);
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static char *ngx_http_geoip_country(ngx_conf_t *cf, ngx_command_t *cmd,
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void *conf);
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static char *ngx_http_geoip_city(ngx_conf_t *cf, ngx_command_t *cmd,
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void *conf);
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static void ngx_http_geoip_cleanup(void *data);
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static ngx_command_t ngx_http_geoip_commands[] = {
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{ ngx_string("geoip_country"),
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NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1,
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ngx_http_geoip_country,
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NGX_HTTP_MAIN_CONF_OFFSET,
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0,
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NULL },
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{ ngx_string("geoip_city"),
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NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1,
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ngx_http_geoip_city,
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NGX_HTTP_MAIN_CONF_OFFSET,
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0,
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NULL },
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ngx_null_command
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};
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static ngx_http_module_t ngx_http_geoip_module_ctx = {
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ngx_http_geoip_add_variables, /* preconfiguration */
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NULL, /* postconfiguration */
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ngx_http_geoip_create_conf, /* create main configuration */
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NULL, /* init main configuration */
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NULL, /* create server configuration */
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NULL, /* merge server configuration */
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NULL, /* create location configuration */
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NULL /* merge location configuration */
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};
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ngx_module_t ngx_http_geoip_module = {
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NGX_MODULE_V1,
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&ngx_http_geoip_module_ctx, /* module context */
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ngx_http_geoip_commands, /* module directives */
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NGX_HTTP_MODULE, /* module type */
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NULL, /* init master */
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NULL, /* init module */
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NULL, /* init process */
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NULL, /* init thread */
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NULL, /* exit thread */
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NULL, /* exit process */
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NULL, /* exit master */
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NGX_MODULE_V1_PADDING
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};
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static ngx_http_variable_t ngx_http_geoip_vars[] = {
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{ ngx_string("geoip_country_code"), NULL,
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ngx_http_geoip_country_variable,
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(uintptr_t) GeoIP_country_code_by_ipnum, 0, 0 },
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{ ngx_string("geoip_country_code3"), NULL,
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ngx_http_geoip_country_variable,
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(uintptr_t) GeoIP_country_code3_by_ipnum, 0, 0 },
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{ ngx_string("geoip_country_name"), NULL,
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ngx_http_geoip_country_variable,
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(uintptr_t) GeoIP_country_name_by_ipnum, 0, 0 },
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{ ngx_string("geoip_city_continent_code"), NULL,
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ngx_http_geoip_city_variable,
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offsetof(GeoIPRecord, continent_code), 0, 0 },
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{ ngx_string("geoip_city_country_code"), NULL,
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ngx_http_geoip_city_variable,
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offsetof(GeoIPRecord, country_code), 0, 0 },
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{ ngx_string("geoip_city_country_code3"), NULL,
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ngx_http_geoip_city_variable,
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offsetof(GeoIPRecord, country_code3), 0, 0 },
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{ ngx_string("geoip_city_country_name"), NULL,
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ngx_http_geoip_city_variable,
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offsetof(GeoIPRecord, country_name), 0, 0 },
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{ ngx_string("geoip_region"), NULL,
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ngx_http_geoip_city_variable,
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offsetof(GeoIPRecord, region), 0, 0 },
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{ ngx_string("geoip_city"), NULL,
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ngx_http_geoip_city_variable,
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offsetof(GeoIPRecord, city), 0, 0 },
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{ ngx_string("geoip_postal_code"), NULL,
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ngx_http_geoip_city_variable,
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offsetof(GeoIPRecord, postal_code), 0, 0 },
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{ ngx_string("geoip_latitude"), NULL,
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ngx_http_geoip_city_float_variable,
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offsetof(GeoIPRecord, latitude), 0, 0 },
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{ ngx_string("geoip_longitude"), NULL,
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ngx_http_geoip_city_float_variable,
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offsetof(GeoIPRecord, longitude), 0, 0 },
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{ ngx_null_string, NULL, NULL, 0, 0, 0 }
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};
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static ngx_int_t
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ngx_http_geoip_country_variable(ngx_http_request_t *r,
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ngx_http_variable_value_t *v, uintptr_t data)
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{
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ngx_http_geoip_variable_handler_pt handler =
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(ngx_http_geoip_variable_handler_pt) data;
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u_long addr;
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const char *val;
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struct sockaddr_in *sin;
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ngx_http_geoip_conf_t *gcf;
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gcf = ngx_http_get_module_main_conf(r, ngx_http_geoip_module);
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if (gcf->country == NULL) {
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goto not_found;
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}
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if (r->connection->sockaddr->sa_family != AF_INET) {
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goto not_found;
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}
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sin = (struct sockaddr_in *) r->connection->sockaddr;
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addr = ntohl(sin->sin_addr.s_addr);
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val = handler(gcf->country, addr);
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if (val == NULL) {
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goto not_found;
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}
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v->len = ngx_strlen(val);
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v->valid = 1;
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v->no_cacheable = 0;
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v->not_found = 0;
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v->data = (u_char *) val;
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return NGX_OK;
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not_found:
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v->not_found = 1;
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return NGX_OK;
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}
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static ngx_int_t
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ngx_http_geoip_city_variable(ngx_http_request_t *r,
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ngx_http_variable_value_t *v, uintptr_t data)
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{
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char *val;
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size_t len;
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GeoIPRecord *gr;
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gr = ngx_http_geoip_get_city_record(r);
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if (gr == NULL) {
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goto not_found;
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}
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val = *(char **) ((char *) gr + data);
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if (val == NULL) {
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goto no_value;
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}
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len = ngx_strlen(val);
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v->data = ngx_pnalloc(r->pool, len);
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if (v->data == NULL) {
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GeoIPRecord_delete(gr);
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return NGX_ERROR;
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}
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ngx_memcpy(v->data, val, len);
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v->len = len;
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v->valid = 1;
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v->no_cacheable = 0;
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v->not_found = 0;
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GeoIPRecord_delete(gr);
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return NGX_OK;
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no_value:
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GeoIPRecord_delete(gr);
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not_found:
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v->not_found = 1;
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return NGX_OK;
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}
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static ngx_int_t
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ngx_http_geoip_city_float_variable(ngx_http_request_t *r,
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ngx_http_variable_value_t *v, uintptr_t data)
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{
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float val;
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GeoIPRecord *gr;
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gr = ngx_http_geoip_get_city_record(r);
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if (gr == NULL) {
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v->not_found = 1;
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return NGX_OK;
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}
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v->data = ngx_pnalloc(r->pool, NGX_INT64_LEN + 5);
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if (v->data == NULL) {
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GeoIPRecord_delete(gr);
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return NGX_ERROR;
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}
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val = *(float *) ((char *) gr + data);
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v->len = ngx_sprintf(v->data, "%.4f", val) - v->data;
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GeoIPRecord_delete(gr);
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return NGX_OK;
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}
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static GeoIPRecord *
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ngx_http_geoip_get_city_record(ngx_http_request_t *r)
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{
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u_long addr;
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struct sockaddr_in *sin;
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ngx_http_geoip_conf_t *gcf;
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gcf = ngx_http_get_module_main_conf(r, ngx_http_geoip_module);
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if (gcf->city && r->connection->sockaddr->sa_family == AF_INET) {
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sin = (struct sockaddr_in *) r->connection->sockaddr;
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addr = ntohl(sin->sin_addr.s_addr);
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return GeoIP_record_by_ipnum(gcf->city, addr);
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}
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return NULL;
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}
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static ngx_int_t
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ngx_http_geoip_add_variables(ngx_conf_t *cf)
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{
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ngx_http_variable_t *var, *v;
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for (v = ngx_http_geoip_vars; v->name.len; v++) {
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var = ngx_http_add_variable(cf, &v->name, v->flags);
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if (var == NULL) {
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return NGX_ERROR;
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}
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var->get_handler = v->get_handler;
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var->data = v->data;
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}
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return NGX_OK;
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}
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static void *
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ngx_http_geoip_create_conf(ngx_conf_t *cf)
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{
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ngx_pool_cleanup_t *cln;
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ngx_http_geoip_conf_t *conf;
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conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_geoip_conf_t));
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if (conf == NULL) {
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return NULL;
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}
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cln = ngx_pool_cleanup_add(cf->pool, 0);
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if (cln == NULL) {
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return NULL;
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}
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cln->handler = ngx_http_geoip_cleanup;
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cln->data = conf;
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return conf;
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}
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static char *
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ngx_http_geoip_country(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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{
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ngx_http_geoip_conf_t *gcf = conf;
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ngx_str_t *value;
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if (gcf->country) {
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return "is duplicate";
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}
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value = cf->args->elts;
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gcf->country = GeoIP_open((char *) value[1].data, GEOIP_MEMORY_CACHE);
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if (gcf->country == NULL) {
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ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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"GeoIO_open(\"%V\") failed", &value[1]);
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return NGX_CONF_ERROR;
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}
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switch (gcf->country->databaseType) {
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case GEOIP_COUNTRY_EDITION:
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case GEOIP_PROXY_EDITION:
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case GEOIP_NETSPEED_EDITION:
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return NGX_CONF_OK;
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default:
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ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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"invalid GeoIP database \"%V\" type:%d",
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&value[1], gcf->country->databaseType);
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return NGX_CONF_ERROR;
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}
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}
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static char *
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ngx_http_geoip_city(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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{
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ngx_http_geoip_conf_t *gcf = conf;
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ngx_str_t *value;
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if (gcf->city) {
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return "is duplicate";
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}
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value = cf->args->elts;
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gcf->city = GeoIP_open((char *) value[1].data, GEOIP_MEMORY_CACHE);
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if (gcf->city == NULL) {
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ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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"GeoIO_open(\"%V\") failed", &value[1]);
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return NGX_CONF_ERROR;
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}
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switch (gcf->city->databaseType) {
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case GEOIP_CITY_EDITION_REV0:
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case GEOIP_CITY_EDITION_REV1:
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return NGX_CONF_OK;
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default:
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ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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"invalid GeoIP City database \"%V\" type:%d",
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&value[1], gcf->city->databaseType);
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return NGX_CONF_ERROR;
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}
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}
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static void
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ngx_http_geoip_cleanup(void *data)
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{
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ngx_http_geoip_conf_t *gcf = data;
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if (gcf->country) {
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GeoIP_delete(gcf->country);
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}
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if (gcf->city) {
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GeoIP_delete(gcf->city);
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}
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}
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