From cc67272cba35e50afa73cfec856c1677b204ae7e Mon Sep 17 00:00:00 2001 From: Joshua Peek Date: Sat, 22 Nov 2008 14:33:00 -0600 Subject: Vendor rack 0.4.0 --- .../vendor/rack-0.4.0/rack/showexceptions.rb | 344 +++++++++++++++++++++ 1 file changed, 344 insertions(+) create mode 100644 actionpack/lib/action_controller/vendor/rack-0.4.0/rack/showexceptions.rb (limited to 'actionpack/lib/action_controller/vendor/rack-0.4.0/rack/showexceptions.rb') diff --git a/actionpack/lib/action_controller/vendor/rack-0.4.0/rack/showexceptions.rb b/actionpack/lib/action_controller/vendor/rack-0.4.0/rack/showexceptions.rb new file mode 100644 index 0000000000..1c85dec19a --- /dev/null +++ b/actionpack/lib/action_controller/vendor/rack-0.4.0/rack/showexceptions.rb @@ -0,0 +1,344 @@ +require 'ostruct' +require 'erb' +require 'rack/request' + +module Rack + # Rack::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 + CONTEXT = 7 + + def initialize(app) + @app = app + @template = ERB.new(TEMPLATE) + end + + def call(env) + @app.call(env) + rescue StandardError, LoadError, SyntaxError => e + [500, {"Content-Type" => "text/html"}, pretty(env, e)] + end + + def pretty(env, exception) + req = Rack::Request.new(env) + path = (req.script_name + req.path_info).squeeze("/") + + frames = exception.backtrace.map { |line| + frame = OpenStruct.new + if line =~ /(.*?):(\d+)(:in `(.*)')?/ + frame.filename = $1 + frame.lineno = $2.to_i + frame.function = $4 + + begin + lineno = frame.lineno-1 + lines = ::File.readlines(frame.filename) + frame.pre_context_lineno = [lineno-CONTEXT, 0].max + frame.pre_context = lines[frame.pre_context_lineno...lineno] + frame.context_line = lines[lineno].chomp + frame.post_context_lineno = [lineno+CONTEXT, lines.size].min + frame.post_context = lines[lineno+1..frame.post_context_lineno] + rescue + end + + frame + else + nil + end + }.compact + + env["rack.errors"].puts "#{exception.class}: #{exception.message}" + env["rack.errors"].puts exception.backtrace.map { |l| "\t" + l } + env["rack.errors"].flush + + [@template.result(binding)] + end + + def h(obj) # :nodoc: + case obj + when String + Utils.escape_html(obj) + else + Utils.escape_html(obj.inspect) + end + end + + # :stopdoc: + +# adapted from Django +# Copyright (c) 2005, the Lawrence Journal-World +# Used under the modified BSD license: +# http://www.xfree86.org/3.3.6/COPYRIGHT2.html#5 +TEMPLATE = <<'HTML' + + + + + + <%=h exception.class %> at <%=h path %> + + + + + +
+

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

+

<%=h exception.message %>

+ + + + + + +
Ruby<%=h frames.first.filename %>: in <%=h frames.first.function %>, line <%=h frames.first.lineno %>
Web<%=h req.request_method %> <%=h(req.host + path)%>
+ +

Jump to:

+ +
+ +
+

Traceback (innermost first)

+
    +<% frames.each { |frame| %> +
  • + <%=h frame.filename %>: in <%=h frame.function %> + + <% if frame.context_line %> +
    + <% if frame.pre_context %> +
      + <% frame.pre_context.each { |line| %> +
    1. <%=h line %>
      2. + <% } %> +
    + <% end %> + +
      +
    1. <%=h frame.context_line %>...
    + + <% if frame.post_context %> +
      + <% frame.post_context.each { |line| %> +
    1. <%=h line %>
      2. + <% } %> +
    + <% end %> +
    + <% end %> +
    • +<% } %> +
+
+ +
+

Request information

+ +

GET

+ <% unless req.GET.empty? %> + + + + + + + + + <% req.GET.sort_by { |k, v| k.to_s }.each { |key, val| %> + + + + + <% } %> + +
VariableValue
<%=h key %>
<%=h val.inspect %>
+ <% else %> +

No GET data.

+ <% end %> + +

POST

+ <% unless req.POST.empty? %> + + + + + + + + + <% req.POST.sort_by { |k, v| k.to_s }.each { |key, val| %> + + + + + <% } %> + +
VariableValue
<%=h key %>
<%=h val.inspect %>
+ <% else %> +

No POST data.

+ <% end %> + + + + <% unless req.cookies.empty? %> + + + + + + + + + <% req.cookies.each { |key, val| %> + + + + + <% } %> + +
VariableValue
<%=h key %>
<%=h val.inspect %>
+ <% else %> +

No cookie data.

+ <% end %> + +

Rack ENV

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

+ You're seeing this error because you use Rack::ShowException. +

+
+ + + +HTML + + # :startdoc: + end +end -- cgit v1.2.3