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# Override Rack::Request to make use of the same list of trusted_proxies
# as the ActionDispatch::Request object. This is necessary for libraries
# like rack_attack where they don't use ActionDispatch, and we want them
# to block/throttle requests on private networks.
# Rack Attack specific issue: https://github.com/kickstarter/rack-attack/issues/145
module Rack
class Request
def trusted_proxy?(ip)
Rails.application.config.action_dispatch.trusted_proxies.any? { |proxy| proxy === ip }
rescue IPAddr::InvalidAddressError
false
end
end
end
gitlab_trusted_proxies = Array(Gitlab.config.gitlab.trusted_proxies).map do |proxy|
begin
IPAddr.new(proxy)
rescue IPAddr::InvalidAddressError
end
end.compact
Rails.application.config.action_dispatch.trusted_proxies = (
['127.0.0.1', '::1'] + gitlab_trusted_proxies)
# A monkey patch to make trusted proxies work with Rails 5.0.
# Inspired by https://github.com/rails/rails/issues/5223#issuecomment-263778719
# Remove this monkey patch when upstream is fixed.
if Gitlab.rails5?
module TrustedProxyMonkeyPatch
def ip
@ip ||= (get_header("action_dispatch.remote_ip") || super).to_s
end
end
ActionDispatch::Request.send(:include, TrustedProxyMonkeyPatch)
end
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