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86 lines
3.1 KiB
Ruby
86 lines
3.1 KiB
Ruby
require 'action_dispatch/http/request'
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require 'action_dispatch/middleware/exception_wrapper'
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require 'active_support/deprecation'
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module ActionDispatch
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# This middleware rescues any exception returned by the application
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# and wraps them in a format for the end user.
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class ShowExceptions
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RESCUES_TEMPLATE_PATH = File.join(File.dirname(__FILE__), 'templates')
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FAILSAFE_RESPONSE = [500, {'Content-Type' => 'text/html'},
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["<html><body><h1>500 Internal Server Error</h1>" <<
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"If you are the administrator of this website, then please read this web " <<
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"application's log file and/or the web server's log file to find out what " <<
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"went wrong.</body></html>"]]
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class << self
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def rescue_responses
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ActiveSupport::Deprecation.warn "ActionDispatch::ShowExceptions.rescue_responses is deprecated. " \
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"Please configure your exceptions using a railtie or in your application config instead."
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ExceptionWrapper.rescue_responses
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end
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def rescue_templates
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ActiveSupport::Deprecation.warn "ActionDispatch::ShowExceptions.rescue_templates is deprecated. " \
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"Please configure your exceptions using a railtie or in your application config instead."
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ExceptionWrapper.rescue_templates
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end
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end
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def initialize(app, consider_all_requests_local = nil)
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ActiveSupport::Deprecation.warn "Passing consider_all_requests_local option to ActionDispatch::ShowExceptions middleware no longer works" unless consider_all_requests_local.nil?
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@app = app
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end
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def call(env)
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begin
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response = @app.call(env)
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rescue Exception => exception
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raise exception if env['action_dispatch.show_exceptions'] == false
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end
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response || render_exception_with_failsafe(env, exception)
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end
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private
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# Define this method because some plugins were monkey patching it.
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# Remove this after 3.2 is out with the other deprecations in this class.
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def status_code(*)
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end
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def render_exception_with_failsafe(env, exception)
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render_exception(env, exception)
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rescue Exception => failsafe_error
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$stderr.puts "Error during failsafe response: #{failsafe_error}\n #{failsafe_error.backtrace * "\n "}"
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FAILSAFE_RESPONSE
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end
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def render_exception(env, exception)
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wrapper = ExceptionWrapper.new(env, exception)
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status = wrapper.status_code
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locale_path = "#{public_path}/#{status}.#{I18n.locale}.html" if I18n.locale
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path = "#{public_path}/#{status}.html"
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if locale_path && File.exist?(locale_path)
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render(status, File.read(locale_path))
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elsif File.exist?(path)
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render(status, File.read(path))
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else
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render(status, '')
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end
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end
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def render(status, body)
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[status, {'Content-Type' => "text/html; charset=#{Response.default_charset}", 'Content-Length' => body.bytesize.to_s}, [body]]
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end
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# TODO: Make this a middleware initialization parameter once
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# we removed the second option (which is deprecated)
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def public_path
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defined?(Rails.public_path) ? Rails.public_path : 'public_path'
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end
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end
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end
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