562 lines
19 KiB
Python
562 lines
19 KiB
Python
from django.conf import settings
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from django.core.template import Template, Context, TemplateDoesNotExist
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from django.utils.html import escape
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from django.utils.httpwrappers import HttpResponseServerError, HttpResponseNotFound
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import inspect, os, re, sys
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from itertools import count, izip
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from os.path import dirname, join as pathjoin
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HIDDEN_SETTINGS = re.compile('SECRET|PASSWORD')
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def linebreak_iter(template_source):
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yield 0
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p = template_source.find('\n')
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while p >= 0:
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yield p+1
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p = template_source.find('\n', p+1)
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yield len(template_source) + 1
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def get_template_exception_info(exc_type, exc_value, tb):
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origin, (start, end) = exc_value.source
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template_source = origin.reload()
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context_lines = 10
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line = 0
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upto = 0
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source_lines = []
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for num, next in enumerate(linebreak_iter(template_source)):
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if start >= upto and end <= next:
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line = num
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before = escape(template_source[upto:start])
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during = escape(template_source[start:end])
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after = escape(template_source[end:next])
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source_lines.append( (num, escape(template_source[upto:next])) )
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upto = next
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total = len(source_lines)
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top = max(1, line - context_lines)
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bottom = min(total, line + 1 + context_lines)
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template_info = {
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'message': exc_value.args[0],
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'source_lines': source_lines[top:bottom],
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'before': before,
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'during': during,
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'after': after,
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'top': top,
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'bottom': bottom,
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'total': total,
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'line': line,
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'name': origin.name,
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}
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exc_info = hasattr(exc_value, 'exc_info') and exc_value.exc_info or (exc_type, exc_value, tb)
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return exc_info + (template_info,)
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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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template_info = None
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template_does_not_exist = False
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loader_debug_info = None
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if issubclass(exc_type, TemplateDoesNotExist):
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from django.core.template.loader import template_source_loaders
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template_does_not_exist = True
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loader_debug_info = []
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for loader in template_source_loaders:
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try:
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source_list_func = getattr(__import__(loader.__module__, '', '', ['get_template_sources']), 'get_template_sources')
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# NOTE: This assumes exc_value is the name of the template that
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# the loader attempted to load.
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template_list = [{'name': t, 'exists': os.path.exists(t)} \
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for t in source_list_func(str(exc_value))]
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except (ImportError, AttributeError):
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template_list = []
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loader_debug_info.append({
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'loader': loader.__module__ + '.' + loader.__name__,
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'templates': template_list,
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})
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if settings.TEMPLATE_DEBUG and hasattr(exc_value, 'source'):
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exc_type, exc_value, tb, template_info = get_template_exception_info(exc_type, exc_value, tb)
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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.items(),
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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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'template_info': template_info,
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'template_does_not_exist': template_does_not_exist,
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'loader_debug_info': loader_debug_info,
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})
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return HttpResponseServerError(t.render(c), mimetype='text/html')
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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), mimetype='text/html')
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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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table.source th { color:#666; }
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table.source td { font-family:monospace; white-space:pre; border-bottom:1px solid #eee; }
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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; cursor:pointer; }
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div.context ol.context-line li { color:black; background-color:#ccc; }
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div.context ol.context-line li span { float: right; }
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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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#template, #template-not-exist { background:#f6f6f6; }
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#template-not-exist ul { margin: 0 0 0 20px; }
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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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.error { background: #ffc; }
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.specific { color:#cc3300; font-weight:bold; }
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</style>
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<script type="text/javascript">
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//<!--
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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(0x25b6);
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var darr = String.fromCharCode(0x25bc);
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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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//-->
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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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{% if template_does_not_exist %}
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<div id="template-not-exist">
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<h2>Template-loader postmortem</h2>
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{% if loader_debug_info %}
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<p>Django tried loading these templates, in this order:</p>
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<ul>
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{% for loader in loader_debug_info %}
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<li>Using loader <code>{{ loader.loader }}</code>:
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<ul>{% for t in loader.templates %}<li><code>{{ t.name }}</code> (File {% if t.exists %}exists{% else %}does not exist{% endif %})</li>{% endfor %}</ul>
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</li>
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{% endfor %}
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</ul>
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{% else %}
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<p>Django couldn't find any templates because your <code>TEMPLATE_LOADERS</code> setting is empty!</p>
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{% endif %}
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</div>
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{% endif %}
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{% if template_info %}
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<div id="template">
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<h2>Template error</h2>
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<p>In template <code>{{ template_info.name }}</code>, error at line <strong>{{ template_info.line }}</strong></p>
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<h3>{{ template_info.message|escape }}</h3>
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<table class="source{% if template_info.top %} cut-top{% endif %}{% ifnotequal template_info.bottom template_info.total %} cut-bottom{% endifnotequal %}">
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{% for source_line in template_info.source_lines %}
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{% ifequal source_line.0 template_info.line %}
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<tr class="error"><th>{{ source_line.0 }}</th>
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<td>{{ template_info.before }}<span class="specific">{{ template_info.during }}</span>{{ template_info.after }}</td></tr>
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{% else %}
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<tr><th>{{ source_line.0 }}</th>
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<td>{{ source_line.1 }}</td></tr>
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{% endifequal %}
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{% endfor %}
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</table>
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</div>
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{% endif %}
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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 onclick="toggle('pre{{ frame.id }}', 'post{{ frame.id }}')">{{ 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 }} <span>...</span></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 onclick="toggle('pre{{ frame.id }}', 'post{{ frame.id }}')">{{ 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 }}')"><span>▶</span> Local vars</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|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>
|
|
|
|
<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>
|
|
"""
|