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30990006a9
This reduces chances of errors where consumers of strings mutate inputs and reduces memory usage of the app. Test suite passes now, but there may be some stuff left, so we will run a few sites on a branch prior to merging
51 lines
1.7 KiB
Ruby
51 lines
1.7 KiB
Ruby
# frozen_string_literal: true
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# since all the rescue from clauses are not caught by the application controller for matches
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# we need to handle certain exceptions here
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module Middleware
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class DiscoursePublicExceptions < ::ActionDispatch::PublicExceptions
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def initialize(path)
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super
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end
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def call(env)
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# this is so so gnarly
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# sometimes we leak out exceptions prior to creating a controller instance
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# this can happen if we have an exception in a route constraint in some cases
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# this code re-dispatches the exception to our application controller so we can
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# properly translate the exception to a page
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exception = env["action_dispatch.exception"]
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response = ActionDispatch::Response.new
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# Special handling for invalid params, in this case we can not re-dispatch
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# the Request object has a "broken" .params which can not be accessed
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exception = nil if Rack::QueryParser::InvalidParameterError === exception
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# We also can not dispatch bad requests as no proper params
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exception = nil if ActionController::BadRequest === exception
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if exception
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begin
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fake_controller = ApplicationController.new
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fake_controller.response = response
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fake_controller.request = ActionDispatch::Request.new(env)
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if ApplicationController.rescue_with_handler(exception, object: fake_controller)
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body = response.body
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if String === body
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body = [body]
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end
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return [response.status, response.headers, body]
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end
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rescue => e
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Discourse.warn_exception(e, message: "Failed to handle exception in exception app middleware")
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end
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end
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super
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end
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end
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end
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