<%=h exception.class %> at <%=h path %>

# frozen_string_literal: true require 'rack/show_exceptions' module Sinatra # Sinatra::ShowExceptions catches all exceptions raised from the app it # wraps. It shows a useful backtrace with the sourcefile and clickable # context, the whole Rack environment and the request data. # # Be careful when you use this on public-facing sites as it could reveal # information helpful to attackers. class ShowExceptions < Rack::ShowExceptions @@eats_errors = Object.new def @@eats_errors.flush(*) end def @@eats_errors.puts(*) end def initialize(app) @app = app end def call(env) @app.call(env) rescue Exception => e errors, env["rack.errors"] = env["rack.errors"], @@eats_errors if prefers_plain_text?(env) content_type = "text/plain" exception = dump_exception(e) else content_type = "text/html" exception = pretty(env, e) end env["rack.errors"] = errors # Post 893a2c50 in rack/rack, the #pretty method above, implemented in # Rack::ShowExceptions, returns a String instead of an array. body = Array(exception) [ 500, { "Content-Type" => content_type, "Content-Length" => body.join.bytesize.to_s }, body ] end private def bad_request?(e) Sinatra::BadRequest === e end def prefers_plain_text?(env) !(Request.new(env).preferred_type("text/plain","text/html") == "text/html") && [/curl/].index { |item| item =~ env["HTTP_USER_AGENT"] } end def frame_class(frame) if frame.filename =~ %r{lib/sinatra.*\.rb} "framework" elsif (defined?(Gem) && frame.filename.include?(Gem.dir)) || frame.filename =~ %r{/bin/(\w+)\z} "system" else "app" end end TEMPLATE = ERB.new <<-HTML # :nodoc: <%=h exception.class %> at <%=h path %>

BACKTRACE

JUMP TO: <% unless bad_request?(exception) %> GET POST <% end %> COOKIES ENV

<%=h frame.filename %> in <%=h frame.function %>
<% if frame.pre_context %>
1. <%=h line %>
<% end %>
1. <%= h frame.context_line %>
<% if frame.post_context %>
1. <%=h line %>
<% end %>

<% unless bad_request?(exception) %>

GET

<% if req.GET and not req.GET.empty? %> <% req.GET.sort_by { |k, v| k.to_s }.each { |key, val| %> <% } %>

Variable	Value
<%=h key %>	<%=h val.inspect %>

<% else %>

No GET data.

<% end %>

POST

<% if req.POST and not req.POST.empty? %> <% req.POST.sort_by { |k, v| k.to_s }.each { |key, val| %> <% } %>

Variable	Value
<%=h key %>	<%=h val.inspect %>

<% else %>

No POST data.

<% end %>

<% end %>

<% unless req.cookies.empty? %> <% req.cookies.each { |key, val| %> <% } %>

Variable	Value
<%=h key %>	<%=h val.inspect %>

<% else %>

No cookie data.

<% end %>

Rack ENV

<% env.sort_by { |k, v| k.to_s }.each { |key, val| %> <% } %>

Variable	Value
<%=h key %>	<%=h val %>

You're seeing this error because you have enabled the show_exceptions setting.

HTML end end Rack::ShowExceptions.send :remove_const, "TEMPLATE" Rack::ShowExceptions.const_set "TEMPLATE", Sinatra::ShowExceptions::TEMPLATE