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|
import re
import os
import sys
import inspect
from django.conf import settings
from os.path import dirname, join as pathjoin
from django.core.template import Template, Context
from django.utils.httpwrappers import HttpResponseServerError, HttpResponseNotFound
HIDDEN_SETTINGS = re.compile('SECRET|PASSWORD')
def technical_500_response(request, exc_type, exc_value, tb):
"""
Create a technical server error response. The last three arguments are
the values returned from sys.exc_info() and friends.
"""
frames = []
while tb is not None:
filename = tb.tb_frame.f_code.co_filename
function = tb.tb_frame.f_code.co_name
lineno = tb.tb_lineno - 1
pre_context_lineno, pre_context, context_line, post_context = _get_lines_from_file(filename, lineno, 7)
frames.append({
'tb' : tb,
'filename' : filename,
'function' : function,
'lineno' : lineno,
'vars' : tb.tb_frame.f_locals,
'id' : id(tb),
'pre_context' : pre_context,
'context_line' : context_line,
'post_context' : post_context,
'pre_context_lineno' : pre_context_lineno,
})
tb = tb.tb_next
# Turn the settings module into a dict, filtering out anything that
# matches HIDDEN_SETTINGS along the way.
settings_dict = {}
for k in dir(settings):
if k.isupper():
if HIDDEN_SETTINGS.search(k):
settings_dict[k] = '********************'
else:
settings_dict[k] = getattr(settings, k)
t = Template(TECHNICAL_500_TEMPLATE)
c = Context({
'exception_type' : exc_type.__name__,
'exception_value' : exc_value,
'frames' : frames,
'lastframe' : frames[-1],
'request' : request,
'request_protocol' : os.environ.get("HTTPS") == "on" and "https" or "http",
'settings' : settings_dict,
})
return HttpResponseServerError(t.render(c))
def technical_404_response(request, exception):
"""
Create a technical 404 error response. The exception should be the Http404
exception.
"""
try:
tried = exception.args[0]['tried']
except (IndexError, TypeError):
tried = []
t = Template(TECHNICAL_404_TEMPLATE)
c = Context({
'root_urlconf' : settings.ROOT_URLCONF,
'urlpatterns' : tried,
'reason' : str(exception),
'request' : request,
'request_protocol' : os.environ.get("HTTPS") == "on" and "https" or "http",
'settings' : dict([(k, getattr(settings, k)) for k in dir(settings) if k.isupper()]),
})
return HttpResponseNotFound(t.render(c))
def _get_lines_from_file(filename, lineno, context_lines):
"""
Returns context_lines before and after lineno from file.
Returns (pre_context_lineno, pre_context, context_line, post_context).
"""
try:
source = open(filename).readlines()
lower_bound = max(0, lineno - context_lines)
upper_bound = lineno + context_lines
pre_context = [line.strip('\n') for line in source[lower_bound:lineno]]
context_line = source[lineno].strip('\n')
post_context = [line.strip('\n') for line in source[lineno+1:upper_bound]]
return lower_bound, pre_context, context_line, post_context
except (OSError, IOError):
return None, [], None, []
#
# Templates are embedded in the file so that we know the error handler will
# always work even if the template loader is broken.
#
TECHNICAL_500_TEMPLATE = """
<!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>{{ exception_type }} at {{ request.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; width:100%; 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 { width:12em; 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; }
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; }
div.context ol.context-line li { color:black; background-color:#ccc; cursor:pointer; }
div.commands { margin-left: 40px; }
div.commands a { color:black; text-decoration:none; }
#summary { background: #ffc; }
#summary h2 { font-weight: normal; color: #666; }
#explanation { background:#eee; }
#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; }
</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(0x2191);
var darr = String.fromCharCode(0x2193);
s.innerHTML = s.innerHTML == uarr ? darr : uarr;
return false;
}
</script>
</head>
<body>
<div id="summary">
<h1>{{ exception_type }} at {{ request.path }}</h1>
<h2>{{ exception_value }}</h2>
<table class="meta">
<tr>
<th>Request Method:</th>
<td>{{ request.META.REQUEST_METHOD }}</td>
</tr>
<tr>
<th>Request URL:</th>
<td>{{ request_protocol }}://{{ request.META.HTTP_HOST }}{{ request.path }}</td>
</tr>
<tr>
<th>Exception Type:</th>
<td>{{ exception_type }}</td>
</tr>
<tr>
<th>Exception Value:</th>
<td>{{ exception_value }}</td>
</tr>
<tr>
<th>Exception Location:</th>
<td>{{ lastframe.filename }} in {{ lastframe.function }}, line {{ lastframe.lineno }}</td>
</tr>
</table>
</div>
<div id="traceback">
<h2>Traceback <span>(innermost last)</span></h2>
<ul class="traceback">
{% for frame in frames %}
<li class="frame">
<code>{{ frame.filename }}</code> in <code>{{ frame.function }}</code>
{% if frame.context_line %}
<div class="context" id="c{{ frame.id }}">
{% if frame.pre_context %}
<ol start="{{ frame.pre_context_lineno }}" class="pre-context" id="pre{{ frame.id }}">{% for line in frame.pre_context %}<li>{{ line|escape }}</li>{% endfor %}</ol>
{% endif %}
<ol start="{{ frame.lineno }}" class="context-line"><li onclick="toggle('pre{{ frame.id }}', 'post{{ frame.id }}')">{{ frame.context_line|escape }}</li></ol>
{% if frame.post_context %}
<ol start='{{ frame.lineno|add:"1" }}' class="post-context" id="post{{ frame.id }}">{% for line in frame.post_context %}<li>{{ line|escape }}</li>{% endfor %}</ol>
{% endif %}
</div>
{% endif %}
{% if frame.vars %}
<div class="commands">
<a href="#" onclick="return varToggle(this, '{{ frame.id }}')">Local vars <span>↓</span> </a>
</div>
<table class="vars" id="v{{ frame.id }}">
<thead>
<tr>
<th>Variable</th>
<th>Value</th>
</tr>
</thead>
<tbody>
{% for var in frame.vars.items|dictsort:"0" %}
<tr>
<td>{{ var.0 }}</td>
<td class="code"><div>{{ var.1|pprint|escape }}</div></td>
</tr>
{% endfor %}
</tbody>
</table>
{% endif %}
</li>
{% endfor %}
</ul>
</div>
<div id="requestinfo">
<h2>Request information</h2>
<h3 id="get-info">GET</h3>
{% if request.GET %}
<table class="req">
<thead>
<tr>
<th>Variable</th>
<th>Value</th>
</tr>
</thead>
</tbody>
{% for var in request.GET.items %}
<tr>
<td>{{ var.0 }}</td>
<td class="code"><div>{{ var.1|pprint|escape }}</div></td>
</tr>
{% endfor %}
</tbody>
</table>
{% else %}
<p>No GET data<p>
{% endif %}
<h3 id="post-info">POST</h3>
{% if request.POST %}
<table class="req">
<thead>
<tr>
<th>Variable</th>
<th>Value</th>
</tr>
</thead>
</tbody>
{% for var in request.POST.items %}
<tr>
<td>{{ var.0 }}</td>
<td class="code"><div>{{ var.1|pprint|escape }}</div></td>
</tr>
{% endfor %}
</tbody>
</table>
{% else %}
<p>No POST data<p>
{% endif %}
<h3 id="cookie-info">COOKIES</h3>
{% if request.COOKIES %}
<table class="req">
<thead>
<tr>
<th>Variable</th>
<th>Value</th>
</tr>
</thead>
</tbody>
{% for var in request.COOKIES.items %}
<tr>
<td>{{ var.0 }}</td>
<td class="code"><div>{{ var.1|pprint|escape }}</div></td>
</tr>
{% endfor %}
</tbody>
</table>
{% else %}
<p>No cookie data<p>
{% endif %}
<h3 id="meta-info">META</h3>
<table class="req">
<thead>
<tr>
<th>Variable</th>
<th>Value</th>
</tr>
</thead>
</tbody>
{% for var in request.META.items|dictsort:"0" %}
<tr>
<td>{{ var.0 }}</td>
<td class="code"><div>{{ var.1|pprint|escape }}</div></td>
</tr>
{% endfor %}
</tbody>
</table>
<h3 id="settings-info">Settings</h3>
<h4>Using settings module <code>{{ settings.SETTINGS_MODULE }}</code></h4>
<table class="req">
<thead>
<tr>
<th>Setting</th>
<th>Value</th>
</tr>
</thead>
</tbody>
{% for var in settings.items|dictsort:"0" %}
<tr>
<td>{{ var.0 }}</td>
<td class="code"><div>{{ var.1|pprint|escape }}</div></td>
</tr>
{% endfor %}
</tbody>
</table>
</div>
<div id="explanation">
<p>
You're seeing this error because you have <code>DEBUG = True</code> in your
Django settings file. Change that to <code>False</code>, and Django will
display a standard 500 page.
</p>
</div>
</body>
</html>
"""
TECHNICAL_404_TEMPLATE = """
<!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" />
<title>Page not found at {{ request.path }}</title>
<meta name="robots" content="NONE,NOARCHIVE" />
<style type="text/css">
html * { padding:0; margin:0; }
body * { padding:10px 20px; }
body * * { padding:0; }
body { font:small sans-serif; background:#eee; }
body>div { border-bottom:1px solid #ddd; }
h1 { font-weight:normal; margin-bottom:.4em; }
h1 span { font-size:60%; color:#666; font-weight:normal; }
table { border:none; border-collapse: collapse; width:100%; }
td, th { vertical-align:top; padding:2px 3px; }
th { width:12em; text-align:right; color:#666; padding-right:.5em; }
#info { background:#f6f6f6; }
#info ol { margin: 0.5em 4em; }
#info ol li { font-family: monospace; }
#summary { background: #ffc; }
#explanation { background:#eee; border-bottom: 0px none; }
</style>
</head>
<body>
<div id="summary">
<h1>Page not found <span>(404)</span></h1>
<table class="meta">
<tr>
<th>Request Method:</th>
<td>{{ request.META.REQUEST_METHOD }}</td>
</tr>
<tr>
<th>Request URL:</th>
<td>{{ request_protocol }}://{{ request.META.HTTP_HOST }}{{ request.path }}</td>
</tr>
</table>
</div>
<div id="info">
{% if urlpatterns %}
<p>
Using the URLconf defined in <code>{{ settings.ROOT_URLCONF }}</code>,
Django tried these URL patterns, in this order:
</p>
<ol>
{% for pattern in urlpatterns %}
<li>{{ pattern|escape }}</li>
{% endfor %}
</ol>
<p>The current URL, <code>{{ request.path }}</code>, didn't match any of these.</p>
{% else %}
<p>{{ reason|escape }}</p>
{% endif %}
</div>
<div id="explanation">
<p>
You're seeing this error because you have <code>DEBUG = True</code> in
your Django settings file. Change that to <code>False</code>, and Django
will display a standard 404 page.
</p>
</div>
</body>
</html>
"""
|
