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import datetime
import decimal
import logging
import sys
from pathlib import Path
from django.core.exceptions import (
BadRequest, PermissionDenied, SuspiciousOperation,
)
from django.http import Http404, HttpResponse, JsonResponse
from django.shortcuts import render
from django.template import TemplateDoesNotExist
from django.urls import get_resolver
from django.views import View
from django.views.debug import (
ExceptionReporter, SafeExceptionReporterFilter, technical_500_response,
)
from django.views.decorators.debug import (
sensitive_post_parameters, sensitive_variables,
)
TEMPLATES_PATH = Path(__file__).resolve().parent / 'templates'
def index_page(request):
"""Dummy index page"""
return HttpResponse('<html><body>Dummy page</body></html>')
def with_parameter(request, parameter):
return HttpResponse('ok')
def raises(request):
# Make sure that a callable that raises an exception in the stack frame's
# local vars won't hijack the technical 500 response (#15025).
def callable():
raise Exception
try:
raise Exception
except Exception:
return technical_500_response(request, *sys.exc_info())
def raises500(request):
# We need to inspect the HTML generated by the fancy 500 debug view but
# the test client ignores it, so we send it explicitly.
try:
raise Exception
except Exception:
return technical_500_response(request, *sys.exc_info())
def raises400(request):
raise SuspiciousOperation
def raises400_bad_request(request):
raise BadRequest('Malformed request syntax')
def raises403(request):
raise PermissionDenied("Insufficient Permissions")
def raises404(request):
resolver = get_resolver(None)
resolver.resolve('/not-in-urls')
def technical404(request):
raise Http404("Testing technical 404.")
class Http404View(View):
def get(self, request):
raise Http404("Testing class-based technical 404.")
def template_exception(request):
return render(request, 'debug/template_exception.html')
def jsi18n(request):
return render(request, 'jsi18n.html')
def jsi18n_multi_catalogs(request):
return render(request, 'jsi18n-multi-catalogs.html')
def raises_template_does_not_exist(request, path='i_dont_exist.html'):
# We need to inspect the HTML generated by the fancy 500 debug view but
# the test client ignores it, so we send it explicitly.
try:
return render(request, path)
except TemplateDoesNotExist:
return technical_500_response(request, *sys.exc_info())
def render_no_template(request):
# If we do not specify a template, we need to make sure the debug
# view doesn't blow up.
return render(request, [], {})
def send_log(request, exc_info):
logger = logging.getLogger('django')
# The default logging config has a logging filter to ensure admin emails are
# only sent with DEBUG=False, but since someone might choose to remove that
# filter, we still want to be able to test the behavior of error emails
# with DEBUG=True. So we need to remove the filter temporarily.
admin_email_handler = [
h for h in logger.handlers
if h.__class__.__name__ == "AdminEmailHandler"
][0]
orig_filters = admin_email_handler.filters
admin_email_handler.filters = []
admin_email_handler.include_html = True
logger.error(
'Internal Server Error: %s', request.path,
exc_info=exc_info,
extra={'status_code': 500, 'request': request},
)
admin_email_handler.filters = orig_filters
def non_sensitive_view(request):
# Do not just use plain strings for the variables' values in the code
# so that the tests don't return false positives when the function's source
# is displayed in the exception report.
cooked_eggs = ''.join(['s', 'c', 'r', 'a', 'm', 'b', 'l', 'e', 'd']) # NOQA
sauce = ''.join(['w', 'o', 'r', 'c', 'e', 's', 't', 'e', 'r', 's', 'h', 'i', 'r', 'e']) # NOQA
try:
raise Exception
except Exception:
exc_info = sys.exc_info()
send_log(request, exc_info)
return technical_500_response(request, *exc_info)
@sensitive_variables('sauce')
@sensitive_post_parameters('bacon-key', 'sausage-key')
def sensitive_view(request):
# Do not just use plain strings for the variables' values in the code
# so that the tests don't return false positives when the function's source
# is displayed in the exception report.
cooked_eggs = ''.join(['s', 'c', 'r', 'a', 'm', 'b', 'l', 'e', 'd']) # NOQA
sauce = ''.join(['w', 'o', 'r', 'c', 'e', 's', 't', 'e', 'r', 's', 'h', 'i', 'r', 'e']) # NOQA
try:
raise Exception
except Exception:
exc_info = sys.exc_info()
send_log(request, exc_info)
return technical_500_response(request, *exc_info)
@sensitive_variables()
@sensitive_post_parameters()
def paranoid_view(request):
# Do not just use plain strings for the variables' values in the code
# so that the tests don't return false positives when the function's source
# is displayed in the exception report.
cooked_eggs = ''.join(['s', 'c', 'r', 'a', 'm', 'b', 'l', 'e', 'd']) # NOQA
sauce = ''.join(['w', 'o', 'r', 'c', 'e', 's', 't', 'e', 'r', 's', 'h', 'i', 'r', 'e']) # NOQA
try:
raise Exception
except Exception:
exc_info = sys.exc_info()
send_log(request, exc_info)
return technical_500_response(request, *exc_info)
def sensitive_args_function_caller(request):
try:
sensitive_args_function(''.join(['w', 'o', 'r', 'c', 'e', 's', 't', 'e', 'r', 's', 'h', 'i', 'r', 'e']))
except Exception:
exc_info = sys.exc_info()
send_log(request, exc_info)
return technical_500_response(request, *exc_info)
@sensitive_variables('sauce')
def sensitive_args_function(sauce):
# Do not just use plain strings for the variables' values in the code
# so that the tests don't return false positives when the function's source
# is displayed in the exception report.
cooked_eggs = ''.join(['s', 'c', 'r', 'a', 'm', 'b', 'l', 'e', 'd']) # NOQA
raise Exception
def sensitive_kwargs_function_caller(request):
try:
sensitive_kwargs_function(''.join(['w', 'o', 'r', 'c', 'e', 's', 't', 'e', 'r', 's', 'h', 'i', 'r', 'e']))
except Exception:
exc_info = sys.exc_info()
send_log(request, exc_info)
return technical_500_response(request, *exc_info)
@sensitive_variables('sauce')
def sensitive_kwargs_function(sauce=None):
# Do not just use plain strings for the variables' values in the code
# so that the tests don't return false positives when the function's source
# is displayed in the exception report.
cooked_eggs = ''.join(['s', 'c', 'r', 'a', 'm', 'b', 'l', 'e', 'd']) # NOQA
raise Exception
class UnsafeExceptionReporterFilter(SafeExceptionReporterFilter):
"""
Ignores all the filtering done by its parent class.
"""
def get_post_parameters(self, request):
return request.POST
def get_traceback_frame_variables(self, request, tb_frame):
return tb_frame.f_locals.items()
@sensitive_variables()
@sensitive_post_parameters()
def custom_exception_reporter_filter_view(request):
# Do not just use plain strings for the variables' values in the code
# so that the tests don't return false positives when the function's source
# is displayed in the exception report.
cooked_eggs = ''.join(['s', 'c', 'r', 'a', 'm', 'b', 'l', 'e', 'd']) # NOQA
sauce = ''.join(['w', 'o', 'r', 'c', 'e', 's', 't', 'e', 'r', 's', 'h', 'i', 'r', 'e']) # NOQA
request.exception_reporter_filter = UnsafeExceptionReporterFilter()
try:
raise Exception
except Exception:
exc_info = sys.exc_info()
send_log(request, exc_info)
return technical_500_response(request, *exc_info)
class CustomExceptionReporter(ExceptionReporter):
custom_traceback_text = 'custom traceback text'
def get_traceback_html(self):
return self.custom_traceback_text
class TemplateOverrideExceptionReporter(ExceptionReporter):
html_template_path = TEMPLATES_PATH / 'my_technical_500.html'
text_template_path = TEMPLATES_PATH / 'my_technical_500.txt'
def custom_reporter_class_view(request):
request.exception_reporter_class = CustomExceptionReporter
try:
raise Exception
except Exception:
exc_info = sys.exc_info()
return technical_500_response(request, *exc_info)
class Klass:
@sensitive_variables('sauce')
def method(self, request):
# Do not just use plain strings for the variables' values in the code
# so that the tests don't return false positives when the function's
# source is displayed in the exception report.
cooked_eggs = ''.join(['s', 'c', 'r', 'a', 'm', 'b', 'l', 'e', 'd']) # NOQA
sauce = ''.join(['w', 'o', 'r', 'c', 'e', 's', 't', 'e', 'r', 's', 'h', 'i', 'r', 'e']) # NOQA
try:
raise Exception
except Exception:
exc_info = sys.exc_info()
send_log(request, exc_info)
return technical_500_response(request, *exc_info)
def sensitive_method_view(request):
return Klass().method(request)
@sensitive_variables('sauce')
@sensitive_post_parameters('bacon-key', 'sausage-key')
def multivalue_dict_key_error(request):
cooked_eggs = ''.join(['s', 'c', 'r', 'a', 'm', 'b', 'l', 'e', 'd']) # NOQA
sauce = ''.join(['w', 'o', 'r', 'c', 'e', 's', 't', 'e', 'r', 's', 'h', 'i', 'r', 'e']) # NOQA
try:
request.POST['bar']
except Exception:
exc_info = sys.exc_info()
send_log(request, exc_info)
return technical_500_response(request, *exc_info)
def json_response_view(request):
return JsonResponse({
'a': [1, 2, 3],
'foo': {'bar': 'baz'},
# Make sure datetime and Decimal objects would be serialized properly
'timestamp': datetime.datetime(2013, 5, 19, 20),
'value': decimal.Decimal('3.14'),
})
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