/usr/lib/ruby/vendor_ruby/action_dispatch/middleware/debug_exceptions.rb is in ruby-actionpack 2:4.2.6-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 | require 'action_dispatch/http/request'
require 'action_dispatch/middleware/exception_wrapper'
require 'action_dispatch/routing/inspector'
module ActionDispatch
# This middleware is responsible for logging exceptions and
# showing a debugging page in case the request is local.
class DebugExceptions
RESCUES_TEMPLATE_PATH = File.expand_path('../templates', __FILE__)
def initialize(app, routes_app = nil)
@app = app
@routes_app = routes_app
end
def call(env)
_, headers, body = response = @app.call(env)
if headers['X-Cascade'] == 'pass'
body.close if body.respond_to?(:close)
raise ActionController::RoutingError, "No route matches [#{env['REQUEST_METHOD']}] #{env['PATH_INFO'].inspect}"
end
response
rescue Exception => exception
raise exception if env['action_dispatch.show_exceptions'] == false
render_exception(env, exception)
end
private
def render_exception(env, exception)
wrapper = ExceptionWrapper.new(env, exception)
log_error(env, wrapper)
if env['action_dispatch.show_detailed_exceptions']
request = Request.new(env)
traces = wrapper.traces
trace_to_show = 'Application Trace'
if traces[trace_to_show].empty? && wrapper.rescue_template != 'routing_error'
trace_to_show = 'Full Trace'
end
if source_to_show = traces[trace_to_show].first
source_to_show_id = source_to_show[:id]
end
template = ActionView::Base.new([RESCUES_TEMPLATE_PATH],
request: request,
exception: wrapper.exception,
traces: traces,
show_source_idx: source_to_show_id,
trace_to_show: trace_to_show,
routes_inspector: routes_inspector(exception),
source_extracts: wrapper.source_extracts,
line_number: wrapper.line_number,
file: wrapper.file
)
file = "rescues/#{wrapper.rescue_template}"
if request.xhr?
body = template.render(template: file, layout: false, formats: [:text])
format = "text/plain"
else
body = template.render(template: file, layout: 'rescues/layout')
format = "text/html"
end
render(wrapper.status_code, body, format)
else
raise exception
end
end
def render(status, body, format)
[status, {'Content-Type' => "#{format}; charset=#{Response.default_charset}", 'Content-Length' => body.bytesize.to_s}, [body]]
end
def log_error(env, wrapper)
logger = logger(env)
return unless logger
exception = wrapper.exception
trace = wrapper.application_trace
trace = wrapper.framework_trace if trace.empty?
ActiveSupport::Deprecation.silence do
message = "\n#{exception.class} (#{exception.message}):\n"
message << exception.annoted_source_code.to_s if exception.respond_to?(:annoted_source_code)
message << " " << trace.join("\n ")
logger.fatal("#{message}\n\n")
end
end
def logger(env)
env['action_dispatch.logger'] || stderr_logger
end
def stderr_logger
@stderr_logger ||= ActiveSupport::Logger.new($stderr)
end
def routes_inspector(exception)
if @routes_app.respond_to?(:routes) && (exception.is_a?(ActionController::RoutingError) || exception.is_a?(ActionView::Template::Error))
ActionDispatch::Routing::RoutesInspector.new(@routes_app.routes.routes)
end
end
end
end
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