h2o+mruby-geoip

0-geoip.patch

diff --git CMakeLists.txt CMakeLists.txt
index 2f76264..7e6d920 100644
--- CMakeLists.txt
+++ CMakeLists.txt
@@ -346,6 +346,7 @@ IF (WITH_MRUBY)
     TARGET_LINK_LIBRARIES(h2o
         "${CMAKE_BINARY_DIR}/mruby/host/lib/libmruby.a"
         "${CMAKE_BINARY_DIR}/mruby/host/mrbgems/mruby-onig-regexp/Onigmo-Onigmo-5.15.0/.libs/libonig.a"
+        "GeoIP"
         "m")
     ADD_DEPENDENCIES(h2o mruby)
 ENDIF (WITH_MRUBY)

1-mruby-geoip-leak-guard.patch

diff --git src/mrb_geoip.c src/mrb_geoip.c
index dd60c29..c9ccd0a 100644
--- src/mrb_geoip.c
+++ src/mrb_geoip.c
@@ -203,6 +203,14 @@ static mrb_value mrb_geoip_time_zone(mrb_state *mrb, mrb_value self)
           data->gir->country_code, data->gir->region)));
 }

+static mrb_value mrb_geoip_clear(mrb_state *mrb, mrb_value self)
+{
+  mrb_geoip_data *data = DATA_PTR(self);
+  GeoIPRecord_delete(data->gir);
+  GeoIP_delete(data->gi);
+  return mrb_fixnum_value(0);
+}
+
 void mrb_mruby_geoip_gem_init(mrb_state *mrb)
 {
     struct RClass *geoip;
@@ -220,6 +228,7 @@ void mrb_mruby_geoip_gem_init(mrb_state *mrb)
     mrb_define_method(mrb, geoip, "metro_code", mrb_geoip_metro_code, MRB_ARGS_NONE());
     mrb_define_method(mrb, geoip, "area_code", mrb_geoip_area_code, MRB_ARGS_NONE());
     mrb_define_method(mrb, geoip, "time_zone", mrb_geoip_time_zone, MRB_ARGS_NONE());
+    mrb_define_method(mrb, geoip, "clear", mrb_geoip_clear, MRB_ARGS_NONE());
     DONE;
 }

country_denied_via_geoip.rb

class CountryDeniedViaGeoIP
  def call(env)
    geoip = GeoIP.new("/usr/share/GeoIP/GeoIPCity.dat")
    geoip.record_by_addr env["REMOTE_ADDR"]
    ret = [399, {}, []]
    if geoip.country_code != "JP"
      ret = [403, {'content-type' => 'text/plain'}, [ "forbidden" ]]
    end
#   geoip.clear
    return ret
  end
end

h2o.conf

hosts:
  "example.net:80":
    header.set: "X-Robots-Tag: noindex, nofollow"
    paths:
      "/":
        mruby.handler-file: /app/country_denied_via_geoip.rb
        proxy.reverse.url: "http://192.0.2.1:5000/"