/usr/lib/ruby/vendor_ruby/action_dispatch/middleware/public_exceptions.rb is in ruby-actionpack 2:4.2.6-1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 | module ActionDispatch
# When called, this middleware renders an error page. By default if an HTML
# response is expected it will render static error pages from the `/public`
# directory. For example when this middleware receives a 500 response it will
# render the template found in `/public/500.html`.
# If an internationalized locale is set, this middleware will attempt to render
# the template in `/public/500.<locale>.html`. If an internationalized template
# is not found it will fall back on `/public/500.html`.
#
# When a request with a content type other than HTML is made, this middleware
# will attempt to convert error information into the appropriate response type.
class PublicExceptions
attr_accessor :public_path
def initialize(public_path)
@public_path = public_path
end
def call(env)
status = env["PATH_INFO"][1..-1]
request = ActionDispatch::Request.new(env)
content_type = request.formats.first
body = { :status => status, :error => Rack::Utils::HTTP_STATUS_CODES.fetch(status.to_i, Rack::Utils::HTTP_STATUS_CODES[500]) }
render(status, content_type, body)
end
private
def render(status, content_type, body)
format = "to_#{content_type.to_sym}" if content_type
if format && body.respond_to?(format)
render_format(status, content_type, body.public_send(format))
else
render_html(status)
end
end
def render_format(status, content_type, body)
[status, {'Content-Type' => "#{content_type}; charset=#{ActionDispatch::Response.default_charset}",
'Content-Length' => body.bytesize.to_s}, [body]]
end
def render_html(status)
path = "#{public_path}/#{status}.#{I18n.locale}.html"
path = "#{public_path}/#{status}.html" unless (found = File.exist?(path))
if found || File.exist?(path)
render_format(status, 'text/html', File.read(path))
else
[404, { "X-Cascade" => "pass" }, []]
end
end
end
end
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