1 files changed, 0 insertions, 134 deletions
diff --git a/debian/vendor-h2o/share/h2o/mruby/dos_detector.rb b/debian/vendor-h2o/share/h2o/mruby/dos_detector.rb
deleted file mode 100644
index 15de2bc..0000000
--- a/debian/vendor-h2o/share/h2o/mruby/dos_detector.rb
+++ /dev/null
@@ -1,134 +0,0 @@
-# Copyright (c) 2016 DeNA Co., Ltd., Ichito Nagata
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to
-# deal in the Software without restriction, including without limitation the
-# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
-# sell copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
-# IN THE SOFTWARE.
-#
-require File.expand_path(File.dirname(__FILE__)) + "/lru_cache.rb"
-
-class DoSDetector
-
-  def initialize(config={})
-    config = {
-      :strategy   => CountingStrategy.new,
-      :callback   => self.class.default_callback,
-      :forwarded  => true,
-      :cache_size => 128,
-    }.merge(config)
-
-    @strategy = config[:strategy]
-    @callback = config[:callback]
-    @forwarded = !!(config[:forwarded])
-    @cache = LRUCache.new(config[:cache_size])
-    raise "strategy must not be nil" if @strategy.nil?
-    raise "callback must not be nil" if @callback.nil?
-  end
-
-  def self.default_callback
-    Proc.new do |env, detected, ip|
-      if detected
-        [ 403, { "Content-Type" => "text/plain" }, [ "Forbidden" ] ]
-      else
-        [ 399, {}, [] ]
-      end
-    end
-  end
-
-  def self.fallthrough_callback
-    Proc.new do |env, detected, ip, vars|
-      if detected
-        vars ||= {}
-        env_headers = vars.merge({:ip => ip}).map { |k, v| [ "x-fallthru-set-dos-#{k}", v.to_s ] }.to_h
-        [ 399, env_headers, [] ]
-      else
-        [ 399, {}, [] ]
-      end
-    end
-  end
-
-  def call(env)
-    now = Time.now.to_i
-
-    ip = env['REMOTE_ADDR']
-    if @forwarded && (xff = env['HTTP_X_FORWARDED_FOR'])
-      ip = xff.split(",")[0]
-    end
-
-    unless client = @cache.get(ip)
-      client = { :ip => ip }
-      @cache.set(ip, client)
-    end
-
-    detected, *args = @strategy.detect?(client, now, env)
-    return @callback.call(env, detected, ip, *args)
-  end
-
-  class CountingStrategy
-
-    def initialize(config={})
-      config = {
-        :period     => 10,
-        :threshold  => 100,
-        :ban_period => 300,
-      }.merge(config)
-      @period = config[:period]
-      @threshold = config[:threshold]
-      @ban_period = config[:ban_period]
-      raise "period must be greater than zero" if @period <= 0
-      raise "threshold must be greater than zero" if @threshold <= 0
-      raise "ban_period must not be negative" if @ban_period < 0
-    end
-
-    def detect?(client, now, env)
-      count = countup(client, now)
-
-      banned_until = client[:banned_until] || 0
-      if banned_until >= now
-        detected = true
-      else
-        detected = count >= @threshold 
-        if detected
-          banned_until = now + @ban_period
-          client[:banned_until] = banned_until
-        end
-      end
-
-      return detected, { :count => count, :banned_until => banned_until }
-    end
-
-    private
-
-    def countup(client, now)
-      count = client[:count] || 0
-      period_index = client[:period_index] || 0
-
-      current_period_index = (now / @period).floor
-      if current_period_index > period_index
-        count -= (current_period_index - period_index) * @threshold
-        count = 0 if count < 0
-        client[:period_index] = current_period_index
-      end
-
-      count += 1
-      client[:count] = count
-
-      return count
-    end
-
-  end
-
-end