614 lines
23 KiB
Python
614 lines
23 KiB
Python
|
import functools
|
||
|
|
import re
|
||
|
|
import sys
|
||
|
|
import types
|
||
|
|
import warnings
|
||
|
|
from pathlib import Path
|
||
|
|
|
||
|
|
from django.conf import settings
|
||
|
|
from django.http import Http404, HttpResponse, HttpResponseNotFound
|
||
|
|
from django.template import Context, Engine, TemplateDoesNotExist
|
||
|
|
from django.template.defaultfilters import pprint
|
||
|
|
from django.urls import resolve
|
||
|
|
from django.utils import timezone
|
||
|
|
from django.utils.datastructures import MultiValueDict
|
||
|
|
from django.utils.encoding import force_str
|
||
|
|
from django.utils.module_loading import import_string
|
||
|
|
from django.utils.regex_helper import _lazy_re_compile
|
||
|
|
from django.utils.version import get_docs_version
|
||
|
|
|
||
|
|
# Minimal Django templates engine to render the error templates
|
||
|
|
# regardless of the project's TEMPLATES setting. Templates are
|
||
|
|
# read directly from the filesystem so that the error handler
|
||
|
|
# works even if the template loader is broken.
|
||
|
|
DEBUG_ENGINE = Engine(
|
||
|
|
debug=True,
|
||
|
|
libraries={"i18n": "django.templatetags.i18n"},
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
def builtin_template_path(name):
|
||
|
|
"""
|
||
|
|
Return a path to a builtin template.
|
||
|
|
|
||
|
|
Avoid calling this function at the module level or in a class-definition
|
||
|
|
because __file__ may not exist, e.g. in frozen environments.
|
||
|
|
"""
|
||
|
|
return Path(__file__).parent / "templates" / name
|
||
|
|
|
||
|
|
|
||
|
|
class ExceptionCycleWarning(UserWarning):
|
||
|
|
pass
|
||
|
|
|
||
|
|
|
||
|
|
class CallableSettingWrapper:
|
||
|
|
"""
|
||
|
|
Object to wrap callable appearing in settings.
|
||
|
|
* Not to call in the debug page (#21345).
|
||
|
|
* Not to break the debug page if the callable forbidding to set attributes
|
||
|
|
(#23070).
|
||
|
|
"""
|
||
|
|
|
||
|
|
def __init__(self, callable_setting):
|
||
|
|
self._wrapped = callable_setting
|
||
|
|
|
||
|
|
def __repr__(self):
|
||
|
|
return repr(self._wrapped)
|
||
|
|
|
||
|
|
|
||
|
|
def technical_500_response(request, exc_type, exc_value, tb, status_code=500):
|
||
|
|
"""
|
||
|
|
Create a technical server error response. The last three arguments are
|
||
|
|
the values returned from sys.exc_info() and friends.
|
||
|
|
"""
|
||
|
|
reporter = get_exception_reporter_class(request)(request, exc_type, exc_value, tb)
|
||
|
|
if request.accepts("text/html"):
|
||
|
|
html = reporter.get_traceback_html()
|
||
|
|
return HttpResponse(html, status=status_code)
|
||
|
|
else:
|
||
|
|
text = reporter.get_traceback_text()
|
||
|
|
return HttpResponse(
|
||
|
|
text, status=status_code, content_type="text/plain; charset=utf-8"
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
@functools.lru_cache
|
||
|
|
def get_default_exception_reporter_filter():
|
||
|
|
# Instantiate the default filter for the first time and cache it.
|
||
|
|
return import_string(settings.DEFAULT_EXCEPTION_REPORTER_FILTER)()
|
||
|
|
|
||
|
|
|
||
|
|
def get_exception_reporter_filter(request):
|
||
|
|
default_filter = get_default_exception_reporter_filter()
|
||
|
|
return getattr(request, "exception_reporter_filter", default_filter)
|
||
|
|
|
||
|
|
|
||
|
|
def get_exception_reporter_class(request):
|
||
|
|
default_exception_reporter_class = import_string(
|
||
|
|
settings.DEFAULT_EXCEPTION_REPORTER
|
||
|
|
)
|
||
|
|
return getattr(
|
||
|
|
request, "exception_reporter_class", default_exception_reporter_class
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
def get_caller(request):
|
||
|
|
resolver_match = request.resolver_match
|
||
|
|
if resolver_match is None:
|
||
|
|
try:
|
||
|
|
resolver_match = resolve(request.path)
|
||
|
|
except Http404:
|
||
|
|
pass
|
||
|
|
return "" if resolver_match is None else resolver_match._func_path
|
||
|
|
|
||
|
|
|
||
|
|
class SafeExceptionReporterFilter:
|
||
|
|
"""
|
||
|
|
Use annotations made by the sensitive_post_parameters and
|
||
|
|
sensitive_variables decorators to filter out sensitive information.
|
||
|
|
"""
|
||
|
|
|
||
|
|
cleansed_substitute = "********************"
|
||
|
|
hidden_settings = _lazy_re_compile(
|
||
|
|
"API|TOKEN|KEY|SECRET|PASS|SIGNATURE", flags=re.I
|
||
|
|
)
|
||
|
|
|
||
|
|
def cleanse_setting(self, key, value):
|
||
|
|
"""
|
||
|
|
Cleanse an individual setting key/value of sensitive content. If the
|
||
|
|
value is a dictionary, recursively cleanse the keys in that dictionary.
|
||
|
|
"""
|
||
|
|
try:
|
||
|
|
is_sensitive = self.hidden_settings.search(key)
|
||
|
|
except TypeError:
|
||
|
|
is_sensitive = False
|
||
|
|
|
||
|
|
if is_sensitive:
|
||
|
|
cleansed = self.cleansed_substitute
|
||
|
|
elif isinstance(value, dict):
|
||
|
|
cleansed = {k: self.cleanse_setting(k, v) for k, v in value.items()}
|
||
|
|
elif isinstance(value, list):
|
||
|
|
cleansed = [self.cleanse_setting("", v) for v in value]
|
||
|
|
elif isinstance(value, tuple):
|
||
|
|
cleansed = tuple([self.cleanse_setting("", v) for v in value])
|
||
|
|
else:
|
||
|
|
cleansed = value
|
||
|
|
|
||
|
|
if callable(cleansed):
|
||
|
|
cleansed = CallableSettingWrapper(cleansed)
|
||
|
|
|
||
|
|
return cleansed
|
||
|
|
|
||
|
|
def get_safe_settings(self):
|
||
|
|
"""
|
||
|
|
Return a dictionary of the settings module with values of sensitive
|
||
|
|
settings replaced with stars (*********).
|
||
|
|
"""
|
||
|
|
settings_dict = {}
|
||
|
|
for k in dir(settings):
|
||
|
|
if k.isupper():
|
||
|
|
settings_dict[k] = self.cleanse_setting(k, getattr(settings, k))
|
||
|
|
return settings_dict
|
||
|
|
|
||
|
|
def get_safe_request_meta(self, request):
|
||
|
|
"""
|
||
|
|
Return a dictionary of request.META with sensitive values redacted.
|
||
|
|
"""
|
||
|
|
if not hasattr(request, "META"):
|
||
|
|
return {}
|
||
|
|
return {k: self.cleanse_setting(k, v) for k, v in request.META.items()}
|
||
|
|
|
||
|
|
def is_active(self, request):
|
||
|
|
"""
|
||
|
|
This filter is to add safety in production environments (i.e. DEBUG
|
||
|
|
is False). If DEBUG is True then your site is not safe anyway.
|
||
|
|
This hook is provided as a convenience to easily activate or
|
||
|
|
deactivate the filter on a per request basis.
|
||
|
|
"""
|
||
|
|
return settings.DEBUG is False
|
||
|
|
|
||
|
|
def get_cleansed_multivaluedict(self, request, multivaluedict):
|
||
|
|
"""
|
||
|
|
Replace the keys in a MultiValueDict marked as sensitive with stars.
|
||
|
|
This mitigates leaking sensitive POST parameters if something like
|
||
|
|
request.POST['nonexistent_key'] throws an exception (#21098).
|
||
|
|
"""
|
||
|
|
sensitive_post_parameters = getattr(request, "sensitive_post_parameters", [])
|
||
|
|
if self.is_active(request) and sensitive_post_parameters:
|
||
|
|
multivaluedict = multivaluedict.copy()
|
||
|
|
for param in sensitive_post_parameters:
|
||
|
|
if param in multivaluedict:
|
||
|
|
multivaluedict[param] = self.cleansed_substitute
|
||
|
|
return multivaluedict
|
||
|
|
|
||
|
|
def get_post_parameters(self, request):
|
||
|
|
"""
|
||
|
|
Replace the values of POST parameters marked as sensitive with
|
||
|
|
stars (*********).
|
||
|
|
"""
|
||
|
|
if request is None:
|
||
|
|
return {}
|
||
|
|
else:
|
||
|
|
sensitive_post_parameters = getattr(
|
||
|
|
request, "sensitive_post_parameters", []
|
||
|
|
)
|
||
|
|
if self.is_active(request) and sensitive_post_parameters:
|
||
|
|
cleansed = request.POST.copy()
|
||
|
|
if sensitive_post_parameters == "__ALL__":
|
||
|
|
# Cleanse all parameters.
|
||
|
|
for k in cleansed:
|
||
|
|
cleansed[k] = self.cleansed_substitute
|
||
|
|
return cleansed
|
||
|
|
else:
|
||
|
|
# Cleanse only the specified parameters.
|
||
|
|
for param in sensitive_post_parameters:
|
||
|
|
if param in cleansed:
|
||
|
|
cleansed[param] = self.cleansed_substitute
|
||
|
|
return cleansed
|
||
|
|
else:
|
||
|
|
return request.POST
|
||
|
|
|
||
|
|
def cleanse_special_types(self, request, value):
|
||
|
|
try:
|
||
|
|
# If value is lazy or a complex object of another kind, this check
|
||
|
|
# might raise an exception. isinstance checks that lazy
|
||
|
|
# MultiValueDicts will have a return value.
|
||
|
|
is_multivalue_dict = isinstance(value, MultiValueDict)
|
||
|
|
except Exception as e:
|
||
|
|
return "{!r} while evaluating {!r}".format(e, value)
|
||
|
|
|
||
|
|
if is_multivalue_dict:
|
||
|
|
# Cleanse MultiValueDicts (request.POST is the one we usually care about)
|
||
|
|
value = self.get_cleansed_multivaluedict(request, value)
|
||
|
|
return value
|
||
|
|
|
||
|
|
def get_traceback_frame_variables(self, request, tb_frame):
|
||
|
|
"""
|
||
|
|
Replace the values of variables marked as sensitive with
|
||
|
|
stars (*********).
|
||
|
|
"""
|
||
|
|
# Loop through the frame's callers to see if the sensitive_variables
|
||
|
|
# decorator was used.
|
||
|
|
current_frame = tb_frame.f_back
|
||
|
|
sensitive_variables = None
|
||
|
|
while current_frame is not None:
|
||
|
|
if (
|
||
|
|
current_frame.f_code.co_name == "sensitive_variables_wrapper"
|
||
|
|
and "sensitive_variables_wrapper" in current_frame.f_locals
|
||
|
|
):
|
||
|
|
# The sensitive_variables decorator was used, so we take note
|
||
|
|
# of the sensitive variables' names.
|
||
|
|
wrapper = current_frame.f_locals["sensitive_variables_wrapper"]
|
||
|
|
sensitive_variables = getattr(wrapper, "sensitive_variables", None)
|
||
|
|
break
|
||
|
|
current_frame = current_frame.f_back
|
||
|
|
|
||
|
|
cleansed = {}
|
||
|
|
if self.is_active(request) and sensitive_variables:
|
||
|
|
if sensitive_variables == "__ALL__":
|
||
|
|
# Cleanse all variables
|
||
|
|
for name in tb_frame.f_locals:
|
||
|
|
cleansed[name] = self.cleansed_substitute
|
||
|
|
else:
|
||
|
|
# Cleanse specified variables
|
||
|
|
for name, value in tb_frame.f_locals.items():
|
||
|
|
if name in sensitive_variables:
|
||
|
|
value = self.cleansed_substitute
|
||
|
|
else:
|
||
|
|
value = self.cleanse_special_types(request, value)
|
||
|
|
cleansed[name] = value
|
||
|
|
else:
|
||
|
|
# Potentially cleanse the request and any MultiValueDicts if they
|
||
|
|
# are one of the frame variables.
|
||
|
|
for name, value in tb_frame.f_locals.items():
|
||
|
|
cleansed[name] = self.cleanse_special_types(request, value)
|
||
|
|
|
||
|
|
if (
|
||
|
|
tb_frame.f_code.co_name == "sensitive_variables_wrapper"
|
||
|
|
and "sensitive_variables_wrapper" in tb_frame.f_locals
|
||
|
|
):
|
||
|
|
# For good measure, obfuscate the decorated function's arguments in
|
||
|
|
# the sensitive_variables decorator's frame, in case the variables
|
||
|
|
# associated with those arguments were meant to be obfuscated from
|
||
|
|
# the decorated function's frame.
|
||
|
|
cleansed["func_args"] = self.cleansed_substitute
|
||
|
|
cleansed["func_kwargs"] = self.cleansed_substitute
|
||
|
|
|
||
|
|
return cleansed.items()
|
||
|
|
|
||
|
|
|
||
|
|
class ExceptionReporter:
|
||
|
|
"""Organize and coordinate reporting on exceptions."""
|
||
|
|
|
||
|
|
@property
|
||
|
|
def html_template_path(self):
|
||
|
|
return builtin_template_path("technical_500.html")
|
||
|
|
|
||
|
|
@property
|
||
|
|
def text_template_path(self):
|
||
|
|
return builtin_template_path("technical_500.txt")
|
||
|
|
|
||
|
|
def __init__(self, request, exc_type, exc_value, tb, is_email=False):
|
||
|
|
self.request = request
|
||
|
|
self.filter = get_exception_reporter_filter(self.request)
|
||
|
|
self.exc_type = exc_type
|
||
|
|
self.exc_value = exc_value
|
||
|
|
self.tb = tb
|
||
|
|
self.is_email = is_email
|
||
|
|
|
||
|
|
self.template_info = getattr(self.exc_value, "template_debug", None)
|
||
|
|
self.template_does_not_exist = False
|
||
|
|
self.postmortem = None
|
||
|
|
|
||
|
|
def _get_raw_insecure_uri(self):
|
||
|
|
"""
|
||
|
|
Return an absolute URI from variables available in this request. Skip
|
||
|
|
allowed hosts protection, so may return insecure URI.
|
||
|
|
"""
|
||
|
|
return "{scheme}://{host}{path}".format(
|
||
|
|
scheme=self.request.scheme,
|
||
|
|
host=self.request._get_raw_host(),
|
||
|
|
path=self.request.get_full_path(),
|
||
|
|
)
|
||
|
|
|
||
|
|
def get_traceback_data(self):
|
||
|
|
"""Return a dictionary containing traceback information."""
|
||
|
|
if self.exc_type and issubclass(self.exc_type, TemplateDoesNotExist):
|
||
|
|
self.template_does_not_exist = True
|
||
|
|
self.postmortem = self.exc_value.chain or [self.exc_value]
|
||
|
|
|
||
|
|
frames = self.get_traceback_frames()
|
||
|
|
for i, frame in enumerate(frames):
|
||
|
|
if "vars" in frame:
|
||
|
|
frame_vars = []
|
||
|
|
for k, v in frame["vars"]:
|
||
|
|
v = pprint(v)
|
||
|
|
# Trim large blobs of data
|
||
|
|
if len(v) > 4096:
|
||
|
|
v = "%s… <trimmed %d bytes string>" % (v[0:4096], len(v))
|
||
|
|
frame_vars.append((k, v))
|
||
|
|
frame["vars"] = frame_vars
|
||
|
|
frames[i] = frame
|
||
|
|
|
||
|
|
unicode_hint = ""
|
||
|
|
if self.exc_type and issubclass(self.exc_type, UnicodeError):
|
||
|
|
start = getattr(self.exc_value, "start", None)
|
||
|
|
end = getattr(self.exc_value, "end", None)
|
||
|
|
if start is not None and end is not None:
|
||
|
|
unicode_str = self.exc_value.args[1]
|
||
|
|
unicode_hint = force_str(
|
||
|
|
unicode_str[max(start - 5, 0) : min(end + 5, len(unicode_str))],
|
||
|
|
"ascii",
|
||
|
|
errors="replace",
|
||
|
|
)
|
||
|
|
from django import get_version
|
||
|
|
|
||
|
|
if self.request is None:
|
||
|
|
user_str = None
|
||
|
|
else:
|
||
|
|
try:
|
||
|
|
user_str = str(self.request.user)
|
||
|
|
except Exception:
|
||
|
|
# request.user may raise OperationalError if the database is
|
||
|
|
# unavailable, for example.
|
||
|
|
user_str = "[unable to retrieve the current user]"
|
||
|
|
|
||
|
|
c = {
|
||
|
|
"is_email": self.is_email,
|
||
|
|
"unicode_hint": unicode_hint,
|
||
|
|
"frames": frames,
|
||
|
|
"request": self.request,
|
||
|
|
"request_meta": self.filter.get_safe_request_meta(self.request),
|
||
|
|
"user_str": user_str,
|
||
|
|
"filtered_POST_items": list(
|
||
|
|
self.filter.get_post_parameters(self.request).items()
|
||
|
|
),
|
||
|
|
"settings": self.filter.get_safe_settings(),
|
||
|
|
"sys_executable": sys.executable,
|
||
|
|
"sys_version_info": "%d.%d.%d" % sys.version_info[0:3],
|
||
|
|
"server_time": timezone.now(),
|
||
|
|
"django_version_info": get_version(),
|
||
|
|
"sys_path": sys.path,
|
||
|
|
"template_info": self.template_info,
|
||
|
|
"template_does_not_exist": self.template_does_not_exist,
|
||
|
|
"postmortem": self.postmortem,
|
||
|
|
}
|
||
|
|
if self.request is not None:
|
||
|
|
c["request_GET_items"] = self.request.GET.items()
|
||
|
|
c["request_FILES_items"] = self.request.FILES.items()
|
||
|
|
c["request_COOKIES_items"] = self.request.COOKIES.items()
|
||
|
|
c["request_insecure_uri"] = self._get_raw_insecure_uri()
|
||
|
|
c["raising_view_name"] = get_caller(self.request)
|
||
|
|
|
||
|
|
# Check whether exception info is available
|
||
|
|
if self.exc_type:
|
||
|
|
c["exception_type"] = self.exc_type.__name__
|
||
|
|
if self.exc_value:
|
||
|
|
c["exception_value"] = str(self.exc_value)
|
||
|
|
if frames:
|
||
|
|
c["lastframe"] = frames[-1]
|
||
|
|
return c
|
||
|
|
|
||
|
|
def get_traceback_html(self):
|
||
|
|
"""Return HTML version of debug 500 HTTP error page."""
|
||
|
|
with self.html_template_path.open(encoding="utf-8") as fh:
|
||
|
|
t = DEBUG_ENGINE.from_string(fh.read())
|
||
|
|
c = Context(self.get_traceback_data(), use_l10n=False)
|
||
|
|
return t.render(c)
|
||
|
|
|
||
|
|
def get_traceback_text(self):
|
||
|
|
"""Return plain text version of debug 500 HTTP error page."""
|
||
|
|
with self.text_template_path.open(encoding="utf-8") as fh:
|
||
|
|
t = DEBUG_ENGINE.from_string(fh.read())
|
||
|
|
c = Context(self.get_traceback_data(), autoescape=False, use_l10n=False)
|
||
|
|
return t.render(c)
|
||
|
|
|
||
|
|
def _get_source(self, filename, loader, module_name):
|
||
|
|
source = None
|
||
|
|
if hasattr(loader, "get_source"):
|
||
|
|
try:
|
||
|
|
source = loader.get_source(module_name)
|
||
|
|
except ImportError:
|
||
|
|
pass
|
||
|
|
if source is not None:
|
||
|
|
source = source.splitlines()
|
||
|
|
if source is None:
|
||
|
|
try:
|
||
|
|
with open(filename, "rb") as fp:
|
||
|
|
source = fp.read().splitlines()
|
||
|
|
except OSError:
|
||
|
|
pass
|
||
|
|
return source
|
||
|
|
|
||
|
|
def _get_lines_from_file(
|
||
|
|
self, filename, lineno, context_lines, loader=None, module_name=None
|
||
|
|
):
|
||
|
|
"""
|
||
|
|
Return context_lines before and after lineno from file.
|
||
|
|
Return (pre_context_lineno, pre_context, context_line, post_context).
|
||
|
|
"""
|
||
|
|
source = self._get_source(filename, loader, module_name)
|
||
|
|
if source is None:
|
||
|
|
return None, [], None, []
|
||
|
|
|
||
|
|
# If we just read the source from a file, or if the loader did not
|
||
|
|
# apply tokenize.detect_encoding to decode the source into a
|
||
|
|
# string, then we should do that ourselves.
|
||
|
|
if isinstance(source[0], bytes):
|
||
|
|
encoding = "ascii"
|
||
|
|
for line in source[:2]:
|
||
|
|
# File coding may be specified. Match pattern from PEP-263
|
||
|
|
# (https://www.python.org/dev/peps/pep-0263/)
|
||
|
|
match = re.search(rb"coding[:=]\s*([-\w.]+)", line)
|
||
|
|
if match:
|
||
|
|
encoding = match[1].decode("ascii")
|
||
|
|
break
|
||
|
|
source = [str(sline, encoding, "replace") for sline in source]
|
||
|
|
|
||
|
|
lower_bound = max(0, lineno - context_lines)
|
||
|
|
upper_bound = lineno + context_lines
|
||
|
|
|
||
|
|
try:
|
||
|
|
pre_context = source[lower_bound:lineno]
|
||
|
|
context_line = source[lineno]
|
||
|
|
post_context = source[lineno + 1 : upper_bound]
|
||
|
|
except IndexError:
|
||
|
|
return None, [], None, []
|
||
|
|
return lower_bound, pre_context, context_line, post_context
|
||
|
|
|
||
|
|
def _get_explicit_or_implicit_cause(self, exc_value):
|
||
|
|
explicit = getattr(exc_value, "__cause__", None)
|
||
|
|
suppress_context = getattr(exc_value, "__suppress_context__", None)
|
||
|
|
implicit = getattr(exc_value, "__context__", None)
|
||
|
|
return explicit or (None if suppress_context else implicit)
|
||
|
|
|
||
|
|
def get_traceback_frames(self):
|
||
|
|
# Get the exception and all its causes
|
||
|
|
exceptions = []
|
||
|
|
exc_value = self.exc_value
|
||
|
|
while exc_value:
|
||
|
|
exceptions.append(exc_value)
|
||
|
|
exc_value = self._get_explicit_or_implicit_cause(exc_value)
|
||
|
|
if exc_value in exceptions:
|
||
|
|
warnings.warn(
|
||
|
|
"Cycle in the exception chain detected: exception '%s' "
|
||
|
|
"encountered again." % exc_value,
|
||
|
|
ExceptionCycleWarning,
|
||
|
|
)
|
||
|
|
# Avoid infinite loop if there's a cyclic reference (#29393).
|
||
|
|
break
|
||
|
|
|
||
|
|
frames = []
|
||
|
|
# No exceptions were supplied to ExceptionReporter
|
||
|
|
if not exceptions:
|
||
|
|
return frames
|
||
|
|
|
||
|
|
# In case there's just one exception, take the traceback from self.tb
|
||
|
|
exc_value = exceptions.pop()
|
||
|
|
tb = self.tb if not exceptions else exc_value.__traceback__
|
||
|
|
while True:
|
||
|
|
frames.extend(self.get_exception_traceback_frames(exc_value, tb))
|
||
|
|
try:
|
||
|
|
exc_value = exceptions.pop()
|
||
|
|
except IndexError:
|
||
|
|
break
|
||
|
|
tb = exc_value.__traceback__
|
||
|
|
return frames
|
||
|
|
|
||
|
|
def get_exception_traceback_frames(self, exc_value, tb):
|
||
|
|
exc_cause = self._get_explicit_or_implicit_cause(exc_value)
|
||
|
|
exc_cause_explicit = getattr(exc_value, "__cause__", True)
|
||
|
|
if tb is None:
|
||
|
|
yield {
|
||
|
|
"exc_cause": exc_cause,
|
||
|
|
"exc_cause_explicit": exc_cause_explicit,
|
||
|
|
"tb": None,
|
||
|
|
"type": "user",
|
||
|
|
}
|
||
|
|
while tb is not None:
|
||
|
|
# Support for __traceback_hide__ which is used by a few libraries
|
||
|
|
# to hide internal frames.
|
||
|
|
if tb.tb_frame.f_locals.get("__traceback_hide__"):
|
||
|
|
tb = tb.tb_next
|
||
|
|
continue
|
||
|
|
filename = tb.tb_frame.f_code.co_filename
|
||
|
|
function = tb.tb_frame.f_code.co_name
|
||
|
|
lineno = tb.tb_lineno - 1
|
||
|
|
loader = tb.tb_frame.f_globals.get("__loader__")
|
||
|
|
module_name = tb.tb_frame.f_globals.get("__name__") or ""
|
||
|
|
(
|
||
|
|
pre_context_lineno,
|
||
|
|
pre_context,
|
||
|
|
context_line,
|
||
|
|
post_context,
|
||
|
|
) = self._get_lines_from_file(
|
||
|
|
filename,
|
||
|
|
lineno,
|
||
|
|
7,
|
||
|
|
loader,
|
||
|
|
module_name,
|
||
|
|
)
|
||
|
|
if pre_context_lineno is None:
|
||
|
|
pre_context_lineno = lineno
|
||
|
|
pre_context = []
|
||
|
|
context_line = "<source code not available>"
|
||
|
|
post_context = []
|
||
|
|
yield {
|
||
|
|
"exc_cause": exc_cause,
|
||
|
|
"exc_cause_explicit": exc_cause_explicit,
|
||
|
|
"tb": tb,
|
||
|
|
"type": "django" if module_name.startswith("django.") else "user",
|
||
|
|
"filename": filename,
|
||
|
|
"function": function,
|
||
|
|
"lineno": lineno + 1,
|
||
|
|
"vars": self.filter.get_traceback_frame_variables(
|
||
|
|
self.request, tb.tb_frame
|
||
|
|
),
|
||
|
|
"id": id(tb),
|
||
|
|
"pre_context": pre_context,
|
||
|
|
"context_line": context_line,
|
||
|
|
"post_context": post_context,
|
||
|
|
"pre_context_lineno": pre_context_lineno + 1,
|
||
|
|
}
|
||
|
|
tb = tb.tb_next
|
||
|
|
|
||
|
|
|
||
|
|
def technical_404_response(request, exception):
|
||
|
|
"""Create a technical 404 error response. `exception` is the Http404."""
|
||
|
|
try:
|
||
|
|
error_url = exception.args[0]["path"]
|
||
|
|
except (IndexError, TypeError, KeyError):
|
||
|
|
error_url = request.path_info[1:] # Trim leading slash
|
||
|
|
|
||
|
|
try:
|
||
|
|
tried = exception.args[0]["tried"]
|
||
|
|
except (IndexError, TypeError, KeyError):
|
||
|
|
resolved = True
|
||
|
|
tried = request.resolver_match.tried if request.resolver_match else None
|
||
|
|
else:
|
||
|
|
resolved = False
|
||
|
|
if not tried or ( # empty URLconf
|
||
|
|
request.path == "/"
|
||
|
|
and len(tried) == 1
|
||
|
|
and len(tried[0]) == 1 # default URLconf
|
||
|
|
and getattr(tried[0][0], "app_name", "")
|
||
|
|
== getattr(tried[0][0], "namespace", "")
|
||
|
|
== "admin"
|
||
|
|
):
|
||
|
|
return default_urlconf(request)
|
||
|
|
|
||
|
|
urlconf = getattr(request, "urlconf", settings.ROOT_URLCONF)
|
||
|
|
if isinstance(urlconf, types.ModuleType):
|
||
|
|
urlconf = urlconf.__name__
|
||
|
|
|
||
|
|
with builtin_template_path("technical_404.html").open(encoding="utf-8") as fh:
|
||
|
|
t = DEBUG_ENGINE.from_string(fh.read())
|
||
|
|
reporter_filter = get_default_exception_reporter_filter()
|
||
|
|
c = Context(
|
||
|
|
{
|
||
|
|
"urlconf": urlconf,
|
||
|
|
"root_urlconf": settings.ROOT_URLCONF,
|
||
|
|
"request_path": error_url,
|
||
|
|
"urlpatterns": tried,
|
||
|
|
"resolved": resolved,
|
||
|
|
"reason": str(exception),
|
||
|
|
"request": request,
|
||
|
|
"settings": reporter_filter.get_safe_settings(),
|
||
|
|
"raising_view_name": get_caller(request),
|
||
|
|
}
|
||
|
|
)
|
||
|
|
return HttpResponseNotFound(t.render(c))
|
||
|
|
|
||
|
|
|
||
|
|
def default_urlconf(request):
|
||
|
|
"""Create an empty URLconf 404 error response."""
|
||
|
|
with builtin_template_path("default_urlconf.html").open(encoding="utf-8") as fh:
|
||
|
|
t = DEBUG_ENGINE.from_string(fh.read())
|
||
|
|
c = Context(
|
||
|
|
{
|
||
|
|
"version": get_docs_version(),
|
||
|
|
}
|
||
|
|
)
|
||
|
|
|
||
|
|
return HttpResponse(t.render(c))
|