django.utils.log.AdminEmailHandler

django.views.debug.ExceptionReporter.get_traceback_text

HIDDEN_SETTINGS = re.compile('API|TOKEN|KEY|SECRET|PASS|SIGNATURE', flags=re.IGNORECASE)

import functools
import re
import sys
import types
from pathlib import Path

from django.conf import settings
from django.http import HttpResponse, HttpResponseNotFound
from django.template import Context, Engine, TemplateDoesNotExist
from django.template.defaultfilters import pprint
from django.urls import Resolver404, resolve
from django.utils import timezone
from django.utils.datastructures import MultiValueDict
from django.utils.encoding import force_text
from django.utils.module_loading import import_string
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'},
)

HIDDEN_SETTINGS = re.compile('API|TOKEN|KEY|SECRET|PASS|SIGNATURE', flags=re.IGNORECASE)

CLEANSED_SUBSTITUTE = '********************'

CURRENT_DIR = Path(__file__).parent


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 cleanse_setting(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:
        if HIDDEN_SETTINGS.search(key):
            cleansed = CLEANSED_SUBSTITUTE
        else:
            if isinstance(value, dict):
                cleansed = {k: cleanse_setting(k, v) for k, v in value.items()}
            else:
                cleansed = value
    except TypeError:
        # If the key isn't regex-able, just return as-is.
        cleansed = value

    if callable(cleansed):
        # For fixing #21345 and #23070
        cleansed = CallableSettingWrapper(cleansed)

    return cleansed


def get_safe_settings():
    """
    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] = cleanse_setting(k, getattr(settings, k))
    return settings_dict