+++ /dev/null
-require 'ostruct'
-require 'erb'
-require 'rack/request'
-require 'rack/utils'
-
-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
- backtrace = pretty(env, e)
- [500,
- {"Content-Type" => "text/html",
- "Content-Length" => backtrace.join.size.to_s},
- backtrace]
- 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 <djangoproject.com>
-# 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'
-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
-<html lang="en">
-<head>
- <meta http-equiv="content-type" content="text/html; charset=utf-8" />
- <meta name="robots" content="NONE,NOARCHIVE" />
- <title><%=h exception.class %> at <%=h path %></title>
- <style type="text/css">
- html * { padding:0; margin:0; }
- body * { padding:10px 20px; }
- body * * { padding:0; }
- body { font:small sans-serif; }
- body>div { border-bottom:1px solid #ddd; }
- h1 { font-weight:normal; }
- h2 { margin-bottom:.8em; }
- h2 span { font-size:80%; color:#666; font-weight:normal; }
- h3 { margin:1em 0 .5em 0; }
- h4 { margin:0 0 .5em 0; font-weight: normal; }
- table {
- border:1px solid #ccc; border-collapse: collapse; background:white; }
- tbody td, tbody th { vertical-align:top; padding:2px 3px; }
- thead th {
- padding:1px 6px 1px 3px; background:#fefefe; text-align:left;
- font-weight:normal; font-size:11px; border:1px solid #ddd; }
- tbody th { text-align:right; color:#666; padding-right:.5em; }
- table.vars { margin:5px 0 2px 40px; }
- table.vars td, table.req td { font-family:monospace; }
- table td.code { width:100%;}
- table td.code div { overflow:hidden; }
- table.source th { color:#666; }
- table.source td {
- font-family:monospace; white-space:pre; border-bottom:1px solid #eee; }
- ul.traceback { list-style-type:none; }
- ul.traceback li.frame { margin-bottom:1em; }
- div.context { margin: 10px 0; }
- div.context ol {
- padding-left:30px; margin:0 10px; list-style-position: inside; }
- div.context ol li {
- font-family:monospace; white-space:pre; color:#666; cursor:pointer; }
- div.context ol.context-line li { color:black; background-color:#ccc; }
- div.context ol.context-line li span { float: right; }
- div.commands { margin-left: 40px; }
- div.commands a { color:black; text-decoration:none; }
- #summary { background: #ffc; }
- #summary h2 { font-weight: normal; color: #666; }
- #summary ul#quicklinks { list-style-type: none; margin-bottom: 2em; }
- #summary ul#quicklinks li { float: left; padding: 0 1em; }
- #summary ul#quicklinks>li+li { border-left: 1px #666 solid; }
- #explanation { background:#eee; }
- #template, #template-not-exist { background:#f6f6f6; }
- #template-not-exist ul { margin: 0 0 0 20px; }
- #traceback { background:#eee; }
- #requestinfo { background:#f6f6f6; padding-left:120px; }
- #summary table { border:none; background:transparent; }
- #requestinfo h2, #requestinfo h3 { position:relative; margin-left:-100px; }
- #requestinfo h3 { margin-bottom:-1em; }
- .error { background: #ffc; }
- .specific { color:#cc3300; font-weight:bold; }
- </style>
- <script type="text/javascript">
- //<!--
- function getElementsByClassName(oElm, strTagName, strClassName){
- // Written by Jonathan Snook, http://www.snook.ca/jon;
- // Add-ons by Robert Nyman, http://www.robertnyman.com
- var arrElements = (strTagName == "*" && document.all)? document.all :
- oElm.getElementsByTagName(strTagName);
- var arrReturnElements = new Array();
- strClassName = strClassName.replace(/\-/g, "\\-");
- var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$$)");
- var oElement;
- for(var i=0; i<arrElements.length; i++){
- oElement = arrElements[i];
- if(oRegExp.test(oElement.className)){
- arrReturnElements.push(oElement);
- }
- }
- return (arrReturnElements)
- }
- function hideAll(elems) {
- for (var e = 0; e < elems.length; e++) {
- elems[e].style.display = 'none';
- }
- }
- window.onload = function() {
- hideAll(getElementsByClassName(document, 'table', 'vars'));
- hideAll(getElementsByClassName(document, 'ol', 'pre-context'));
- hideAll(getElementsByClassName(document, 'ol', 'post-context'));
- }
- function toggle() {
- for (var i = 0; i < arguments.length; i++) {
- var e = document.getElementById(arguments[i]);
- if (e) {
- e.style.display = e.style.display == 'none' ? 'block' : 'none';
- }
- }
- return false;
- }
- function varToggle(link, id) {
- toggle('v' + id);
- var s = link.getElementsByTagName('span')[0];
- var uarr = String.fromCharCode(0x25b6);
- var darr = String.fromCharCode(0x25bc);
- s.innerHTML = s.innerHTML == uarr ? darr : uarr;
- return false;
- }
- //-->
- </script>
-</head>
-<body>
-
-<div id="summary">
- <h1><%=h exception.class %> at <%=h path %></h1>
- <h2><%=h exception.message %></h2>
- <table><tr>
- <th>Ruby</th>
- <td><code><%=h frames.first.filename %></code>: in <code><%=h frames.first.function %></code>, line <%=h frames.first.lineno %></td>
- </tr><tr>
- <th>Web</th>
- <td><code><%=h req.request_method %> <%=h(req.host + path)%></code></td>
- </tr></table>
-
- <h3>Jump to:</h3>
- <ul id="quicklinks">
- <li><a href="#get-info">GET</a></li>
- <li><a href="#post-info">POST</a></li>
- <li><a href="#cookie-info">Cookies</a></li>
- <li><a href="#env-info">ENV</a></li>
- </ul>
-</div>
-
-<div id="traceback">
- <h2>Traceback <span>(innermost first)</span></h2>
- <ul class="traceback">
-<% frames.each { |frame| %>
- <li class="frame">
- <code><%=h frame.filename %></code>: in <code><%=h frame.function %></code>
-
- <% if frame.context_line %>
- <div class="context" id="c<%=h frame.object_id %>">
- <% if frame.pre_context %>
- <ol start="<%=h frame.pre_context_lineno+1 %>" class="pre-context" id="pre<%=h frame.object_id %>">
- <% frame.pre_context.each { |line| %>
- <li onclick="toggle('pre<%=h frame.object_id %>', 'post<%=h frame.object_id %>')"><%=h line %></li>
- <% } %>
- </ol>
- <% end %>
-
- <ol start="<%=h frame.lineno %>" class="context-line">
- <li onclick="toggle('pre<%=h frame.object_id %>', 'post<%=h frame.object_id %>')"><%=h frame.context_line %><span>...</span></li></ol>
-
- <% if frame.post_context %>
- <ol start='<%=h frame.lineno+1 %>' class="post-context" id="post<%=h frame.object_id %>">
- <% frame.post_context.each { |line| %>
- <li onclick="toggle('pre<%=h frame.object_id %>', 'post<%=h frame.object_id %>')"><%=h line %></li>
- <% } %>
- </ol>
- <% end %>
- </div>
- <% end %>
- </li>
-<% } %>
- </ul>
-</div>
-
-<div id="requestinfo">
- <h2>Request information</h2>
-
- <h3 id="get-info">GET</h3>
- <% unless req.GET.empty? %>
- <table class="req">
- <thead>
- <tr>
- <th>Variable</th>
- <th>Value</th>
- </tr>
- </thead>
- <tbody>
- <% req.GET.sort_by { |k, v| k.to_s }.each { |key, val| %>
- <tr>
- <td><%=h key %></td>
- <td class="code"><div><%=h val.inspect %></div></td>
- </tr>
- <% } %>
- </tbody>
- </table>
- <% else %>
- <p>No GET data.</p>
- <% end %>
-
- <h3 id="post-info">POST</h3>
- <% unless req.POST.empty? %>
- <table class="req">
- <thead>
- <tr>
- <th>Variable</th>
- <th>Value</th>
- </tr>
- </thead>
- <tbody>
- <% req.POST.sort_by { |k, v| k.to_s }.each { |key, val| %>
- <tr>
- <td><%=h key %></td>
- <td class="code"><div><%=h val.inspect %></div></td>
- </tr>
- <% } %>
- </tbody>
- </table>
- <% else %>
- <p>No POST data.</p>
- <% end %>
-
-
- <h3 id="cookie-info">COOKIES</h3>
- <% unless req.cookies.empty? %>
- <table class="req">
- <thead>
- <tr>
- <th>Variable</th>
- <th>Value</th>
- </tr>
- </thead>
- <tbody>
- <% req.cookies.each { |key, val| %>
- <tr>
- <td><%=h key %></td>
- <td class="code"><div><%=h val.inspect %></div></td>
- </tr>
- <% } %>
- </tbody>
- </table>
- <% else %>
- <p>No cookie data.</p>
- <% end %>
-
- <h3 id="env-info">Rack ENV</h3>
- <table class="req">
- <thead>
- <tr>
- <th>Variable</th>
- <th>Value</th>
- </tr>
- </thead>
- <tbody>
- <% env.sort_by { |k, v| k.to_s }.each { |key, val| %>
- <tr>
- <td><%=h key %></td>
- <td class="code"><div><%=h val %></div></td>
- </tr>
- <% } %>
- </tbody>
- </table>
-
-</div>
-
-<div id="explanation">
- <p>
- You're seeing this error because you use <code>Rack::ShowExceptions</code>.
- </p>
-</div>
-
-</body>
-</html>
-HTML
-
- # :startdoc:
- end
-end
projects / feedcatcher.git / blobdiff