452 lines
15 KiB
Python
452 lines
15 KiB
Python
import re
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import os
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import sys
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import inspect
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from django.conf import settings
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from os.path import dirname, join as pathjoin
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from django.core.template import Template, Context
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from django.utils.httpwrappers import HttpResponseServerError, HttpResponseNotFound
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HIDDEN_SETTINGS = re.compile('SECRET|PASSWORD')
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def technical_500_response(request, exc_type, exc_value, tb):
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"""
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Create a technical server error response. The last three arguments are
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the values returned from sys.exc_info() and friends.
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"""
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frames = []
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while tb is not None:
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filename = tb.tb_frame.f_code.co_filename
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function = tb.tb_frame.f_code.co_name
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lineno = tb.tb_lineno - 1
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pre_context_lineno, pre_context, context_line, post_context = _get_lines_from_file(filename, lineno, 7)
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frames.append({
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'tb' : tb,
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'filename' : filename,
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'function' : function,
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'lineno' : lineno,
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'vars' : tb.tb_frame.f_locals,
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'id' : id(tb),
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'pre_context' : pre_context,
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'context_line' : context_line,
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'post_context' : post_context,
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'pre_context_lineno' : pre_context_lineno,
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})
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tb = tb.tb_next
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# Turn the settings module into a dict, filtering out anything that
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# matches HIDDEN_SETTINGS along the way.
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settings_dict = {}
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for k in dir(settings):
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if k.isupper():
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if HIDDEN_SETTINGS.search(k):
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settings_dict[k] = '********************'
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else:
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settings_dict[k] = getattr(settings, k)
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t = Template(TECHNICAL_500_TEMPLATE)
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c = Context({
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'exception_type' : exc_type.__name__,
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'exception_value' : exc_value,
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'frames' : frames,
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'lastframe' : frames[-1],
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'request' : request,
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'request_protocol' : os.environ.get("HTTPS") == "on" and "https" or "http",
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'settings' : settings_dict,
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})
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return HttpResponseServerError(t.render(c))
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def technical_404_response(request, exception):
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"""
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Create a technical 404 error response. The exception should be the Http404
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exception.
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"""
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try:
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tried = exception.args[0]['tried']
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except (IndexError, TypeError):
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tried = []
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t = Template(TECHNICAL_404_TEMPLATE)
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c = Context({
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'root_urlconf' : settings.ROOT_URLCONF,
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'urlpatterns' : tried,
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'reason' : str(exception),
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'request' : request,
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'request_protocol' : os.environ.get("HTTPS") == "on" and "https" or "http",
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'settings' : dict([(k, getattr(settings, k)) for k in dir(settings) if k.isupper()]),
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})
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return HttpResponseNotFound(t.render(c))
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def _get_lines_from_file(filename, lineno, context_lines):
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"""
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Returns context_lines before and after lineno from file.
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Returns (pre_context_lineno, pre_context, context_line, post_context).
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"""
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try:
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source = open(filename).readlines()
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lower_bound = max(0, lineno - context_lines)
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upper_bound = lineno + context_lines
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pre_context = [line.strip('\n') for line in source[lower_bound:lineno]]
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context_line = source[lineno].strip('\n')
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post_context = [line.strip('\n') for line in source[lineno+1:upper_bound]]
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return lower_bound, pre_context, context_line, post_context
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except (OSError, IOError):
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return None, [], None, []
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#
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# Templates are embedded in the file so that we know the error handler will
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# always work even if the template loader is broken.
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#
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TECHNICAL_500_TEMPLATE = """
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html lang="en">
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<head>
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<meta http-equiv="content-type" content="text/html; charset=utf-8" />
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<meta name="robots" content="NONE,NOARCHIVE" />
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<title>{{ exception_type }} at {{ request.path }}</title>
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<style type="text/css">
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html * { padding:0; margin:0; }
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body * { padding:10px 20px; }
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body * * { padding:0; }
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body { font:small sans-serif; }
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body>div { border-bottom:1px solid #ddd; }
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h1 { font-weight:normal; }
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h2 { margin-bottom:.8em; }
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h2 span { font-size:80%; color:#666; font-weight:normal; }
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h3 { margin:1em 0 .5em 0; }
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h4 { margin:0 0 .5em 0; font-weight: normal; }
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table { border:1px solid #ccc; border-collapse: collapse; width:100%; background:white; }
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tbody td, tbody th { vertical-align:top; padding:2px 3px; }
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thead th { padding:1px 6px 1px 3px; background:#fefefe; text-align:left; font-weight:normal; font-size:11px; border:1px solid #ddd; }
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tbody th { width:12em; text-align:right; color:#666; padding-right:.5em; }
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table.vars { margin:5px 0 2px 40px; }
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table.vars td, table.req td { font-family:monospace; }
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table td.code { width:100%; }
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table td.code div { overflow:hidden; }
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ul.traceback { list-style-type:none; }
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ul.traceback li.frame { margin-bottom:1em; }
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div.context { margin: 10px 0; }
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div.context ol { padding-left:30px; margin:0 10px; list-style-position: inside; }
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div.context ol li { font-family:monospace; white-space:pre; color:#666; }
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div.context ol.context-line li { color:black; background-color:#ccc; cursor:pointer; }
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div.commands { margin-left: 40px; }
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div.commands a { color:black; text-decoration:none; }
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#summary { background: #ffc; }
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#summary h2 { font-weight: normal; color: #666; }
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#explanation { background:#eee; }
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#traceback { background:#eee; }
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#requestinfo { background:#f6f6f6; padding-left:120px; }
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#summary table { border:none; background:transparent; }
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#requestinfo h2, #requestinfo h3 { position:relative; margin-left:-100px; }
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#requestinfo h3 { margin-bottom:-1em; }
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</style>
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<script type="text/javascript">
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function getElementsByClassName(oElm, strTagName, strClassName){
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// Written by Jonathan Snook, http://www.snook.ca/jon; Add-ons by Robert Nyman, http://www.robertnyman.com
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var arrElements = (strTagName == "*" && document.all)? document.all :
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oElm.getElementsByTagName(strTagName);
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var arrReturnElements = new Array();
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strClassName = strClassName.replace(/\-/g, "\\-");
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var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
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var oElement;
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for(var i=0; i<arrElements.length; i++){
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oElement = arrElements[i];
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if(oRegExp.test(oElement.className)){
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arrReturnElements.push(oElement);
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}
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}
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return (arrReturnElements)
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}
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function hideAll(elems) {
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for (var e = 0; e < elems.length; e++) {
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elems[e].style.display = 'none';
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}
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}
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window.onload = function() {
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hideAll(getElementsByClassName(document, 'table', 'vars'));
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hideAll(getElementsByClassName(document, 'ol', 'pre-context'));
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hideAll(getElementsByClassName(document, 'ol', 'post-context'));
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}
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function toggle() {
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for (var i = 0; i < arguments.length; i++) {
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var e = document.getElementById(arguments[i]);
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if (e) {
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e.style.display = e.style.display == 'none' ? 'block' : 'none';
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}
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}
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return false;
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}
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function varToggle(link, id) {
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toggle('v' + id);
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var s = link.getElementsByTagName('span')[0];
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var uarr = String.fromCharCode(0x2191);
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var darr = String.fromCharCode(0x2193);
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s.innerHTML = s.innerHTML == uarr ? darr : uarr;
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return false;
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}
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</script>
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</head>
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<body>
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<div id="summary">
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<h1>{{ exception_type }} at {{ request.path }}</h1>
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<h2>{{ exception_value }}</h2>
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<table class="meta">
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<tr>
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<th>Request Method:</th>
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<td>{{ request.META.REQUEST_METHOD }}</td>
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</tr>
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<tr>
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<th>Request URL:</th>
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<td>{{ request_protocol }}://{{ request.META.HTTP_HOST }}{{ request.path }}</td>
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</tr>
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<tr>
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<th>Exception Type:</th>
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<td>{{ exception_type }}</td>
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</tr>
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<tr>
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<th>Exception Value:</th>
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<td>{{ exception_value }}</td>
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</tr>
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<tr>
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<th>Exception Location:</th>
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<td>{{ lastframe.filename }} in {{ lastframe.function }}, line {{ lastframe.lineno }}</td>
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</tr>
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</table>
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</div>
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<div id="traceback">
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<h2>Traceback <span>(innermost last)</span></h2>
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<ul class="traceback">
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{% for frame in frames %}
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<li class="frame">
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<code>{{ frame.filename }}</code> in <code>{{ frame.function }}</code>
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{% if frame.context_line %}
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<div class="context" id="c{{ frame.id }}">
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{% if frame.pre_context %}
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<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>
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{% endif %}
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<ol start="{{ frame.lineno }}" class="context-line"><li onclick="toggle('pre{{ frame.id }}', 'post{{ frame.id }}')">{{ frame.context_line|escape }}</li></ol>
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{% if frame.post_context %}
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<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>
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{% endif %}
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</div>
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{% endif %}
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{% if frame.vars %}
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<div class="commands">
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<a href="#" onclick="return varToggle(this, '{{ frame.id }}')">Local vars <span>↓</span> </a>
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</div>
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<table class="vars" id="v{{ frame.id }}">
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<thead>
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<tr>
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<th>Variable</th>
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<th>Value</th>
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</tr>
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</thead>
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<tbody>
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{% for var in frame.vars.items|dictsort:"0" %}
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<tr>
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<td>{{ var.0 }}</td>
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<td class="code"><div>{{ var.1|pprint|escape }}</div></td>
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</tr>
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{% endfor %}
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</tbody>
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</table>
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{% endif %}
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</li>
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{% endfor %}
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</ul>
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</div>
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<div id="requestinfo">
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<h2>Request information</h2>
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<h3 id="get-info">GET</h3>
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{% if request.GET %}
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<table class="req">
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<thead>
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<tr>
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<th>Variable</th>
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<th>Value</th>
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</tr>
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</thead>
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</tbody>
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{% for var in request.GET.items %}
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<tr>
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<td>{{ var.0 }}</td>
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<td class="code"><div>{{ var.1|pprint|escape }}</div></td>
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</tr>
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{% endfor %}
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</tbody>
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</table>
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{% else %}
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<p>No GET data<p>
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{% endif %}
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<h3 id="post-info">POST</h3>
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{% if request.POST %}
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<table class="req">
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<thead>
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<tr>
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<th>Variable</th>
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<th>Value</th>
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</tr>
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</thead>
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</tbody>
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{% for var in request.POST.items %}
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<tr>
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<td>{{ var.0 }}</td>
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<td class="code"><div>{{ var.1|pprint|escape }}</div></td>
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</tr>
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{% endfor %}
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</tbody>
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</table>
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{% else %}
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<p>No POST data<p>
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{% endif %}
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<h3 id="cookie-info">COOKIES</h3>
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{% if request.COOKIES %}
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<table class="req">
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<thead>
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<tr>
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<th>Variable</th>
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<th>Value</th>
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</tr>
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</thead>
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</tbody>
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{% for var in request.COOKIES.items %}
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<tr>
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<td>{{ var.0 }}</td>
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<td class="code"><div>{{ var.1|pprint|escape }}</div></td>
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</tr>
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{% endfor %}
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</tbody>
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</table>
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{% else %}
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<p>No cookie data<p>
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{% endif %}
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<h3 id="meta-info">META</h3>
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<table class="req">
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<thead>
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<tr>
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<th>Variable</th>
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<th>Value</th>
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</tr>
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</thead>
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</tbody>
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{% for var in request.META.items|dictsort:"0" %}
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<tr>
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<td>{{ var.0 }}</td>
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<td class="code"><div>{{ var.1|pprint|escape }}</div></td>
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</tr>
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{% endfor %}
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</tbody>
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</table>
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<h3 id="settings-info">Settings</h3>
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<h4>Using settings module <code>{{ settings.SETTINGS_MODULE }}</code></h4>
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<table class="req">
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<thead>
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<tr>
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<th>Setting</th>
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<th>Value</th>
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</tr>
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</thead>
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</tbody>
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{% for var in settings.items|dictsort:"0" %}
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<tr>
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<td>{{ var.0 }}</td>
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<td class="code"><div>{{ var.1|pprint|escape }}</div></td>
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</tr>
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{% endfor %}
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</tbody>
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</table>
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</div>
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<div id="explanation">
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<p>
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You're seeing this error because you have <code>DEBUG = True</code> in your
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Django settings file. Change that to <code>False</code>, and Django will
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display a standard 500 page.
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</p>
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</div>
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</body>
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</html>
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"""
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TECHNICAL_404_TEMPLATE = """
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html lang="en">
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<head>
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<meta http-equiv="content-type" content="text/html; charset=utf-8" />
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<title>Page not found at {{ request.path }}</title>
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<meta name="robots" content="NONE,NOARCHIVE" />
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<style type="text/css">
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html * { padding:0; margin:0; }
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body * { padding:10px 20px; }
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body * * { padding:0; }
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body { font:small sans-serif; background:#eee; }
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body>div { border-bottom:1px solid #ddd; }
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h1 { font-weight:normal; margin-bottom:.4em; }
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h1 span { font-size:60%; color:#666; font-weight:normal; }
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table { border:none; border-collapse: collapse; width:100%; }
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td, th { vertical-align:top; padding:2px 3px; }
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th { width:12em; text-align:right; color:#666; padding-right:.5em; }
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#info { background:#f6f6f6; }
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#info ol { margin: 0.5em 4em; }
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#info ol li { font-family: monospace; }
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#summary { background: #ffc; }
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#explanation { background:#eee; border-bottom: 0px none; }
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</style>
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</head>
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<body>
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<div id="summary">
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<h1>Page not found <span>(404)</span></h1>
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<table class="meta">
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<tr>
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<th>Request Method:</th>
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<td>{{ request.META.REQUEST_METHOD }}</td>
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</tr>
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<tr>
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<th>Request URL:</th>
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<td>{{ request_protocol }}://{{ request.META.HTTP_HOST }}{{ request.path }}</td>
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</tr>
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</table>
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</div>
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<div id="info">
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{% if urlpatterns %}
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<p>
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Using the URLconf defined in <code>{{ settings.ROOT_URLCONF }}</code>,
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Django tried these URL patterns, in this order:
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</p>
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<ol>
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{% for pattern in urlpatterns %}
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<li>{{ pattern|escape }}</li>
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{% endfor %}
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</ol>
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<p>The current URL, <code>{{ request.path }}</code>, didn't match any of these.</p>
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{% else %}
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<p>{{ reason|escape }}</p>
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{% endif %}
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</div>
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<div id="explanation">
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<p>
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You're seeing this error because you have <code>DEBUG = True</code> in
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your Django settings file. Change that to <code>False</code>, and Django
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will display a standard 404 page.
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</p>
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</div>
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</body>
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</html>
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""" |