8cf609bfa9
The @decorator mechanism does not seem to work with @method_decorator in Django 4.0, have not tracked down why.
117 lines
4.2 KiB
Python
117 lines
4.2 KiB
Python
# Copyright The IETF Trust 2016-2020, All Rights Reserved
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# -*- coding: utf-8 -*-
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import datetime
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from decorator import decorator, decorate
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from functools import wraps
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from django.conf import settings
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from django.contrib.auth import login
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from django.http import HttpResponse
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from django.shortcuts import render
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from django.utils import timezone
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from django.utils.encoding import force_bytes
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import debug # pyflakes:ignore
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from ietf.utils.test_runner import set_coverage_checking
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from ietf.person.models import Person, PersonalApiKey, PersonApiKeyEvent
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from ietf.utils import log
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@decorator
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def skip_coverage(f, *args, **kwargs):
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if settings.TEST_CODE_COVERAGE_CHECKER:
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set_coverage_checking(False)
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result = f(*args, **kwargs)
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set_coverage_checking(True)
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return result
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else:
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return f(*args, **kwargs)
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@decorator
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def person_required(f, request, *args, **kwargs):
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if not request.user.is_authenticated:
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raise ValueError("The @person_required decorator should be called after @login_required.")
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try:
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request.user.person
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except Person.DoesNotExist:
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return render(request, 'registration/missing_person.html')
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return f(request, *args, **kwargs)
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def require_api_key(f):
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@wraps(f)
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def _wrapper(request, *args, **kwargs):
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def err(code, text):
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return HttpResponse(text, status=code, content_type='text/plain')
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# Check method and get hash
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if request.method == 'POST':
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hash = request.POST.get('apikey')
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elif request.method == 'GET':
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hash = request.GET.get('apikey')
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else:
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return err(405, "Method not allowed")
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if not hash:
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return err(400, "Missing apikey parameter")
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# Check hash
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key = PersonalApiKey.validate_key(force_bytes(hash))
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if not key:
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return err(403, "Invalid apikey")
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# Check endpoint
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urlpath = request.META.get('PATH_INFO')
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if not (urlpath and urlpath == key.endpoint):
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return err(400, "Apikey endpoint mismatch")
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# Check time since regular login
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person = key.person
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last_login = person.user.last_login
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if not person.user.is_staff:
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time_limit = (timezone.now() - datetime.timedelta(days=settings.UTILS_APIKEY_GUI_LOGIN_LIMIT_DAYS))
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if last_login == None or last_login < time_limit:
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return err(400, "Too long since last regular login")
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# Log in
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login(request, person.user)
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# restore the user.last_login field, so it reflects only gui logins
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person.user.last_login = last_login
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person.user.save()
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# Update stats
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key.count += 1
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key.latest = timezone.now()
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key.save()
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PersonApiKeyEvent.objects.create(person=person, type='apikey_login', key=key, desc="Logged in with key ID %s, endpoint %s" % (key.id, key.endpoint))
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# Execute decorated function
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try:
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ret = f(request, *args, **kwargs)
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except AttributeError as e:
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log.log("Bad API call: args: %s, kwargs: %s, exception: %s" % (args, kwargs, e))
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return err(400, "Bad or missing parameters")
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return ret
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return _wrapper
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def _memoize(func, self, *args, **kwargs):
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''''Memoize wrapper for instance methouds. Use @lru_cache for functions.'''
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if kwargs: # frozenset is used to ensure hashability
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key = args, frozenset(list(kwargs.items()))
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else:
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key = args
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# instance method, set up cache if needed
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if not hasattr(self, '_cache'):
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self._cache = {}
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if not func in self._cache:
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self._cache[func] = {}
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#
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cache = self._cache[func]
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if key not in cache:
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cache[key] = func(self, *args, **kwargs)
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return cache[key]
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def memoize(func):
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if not hasattr(func, '__class__'):
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raise NotImplementedError("Use @lru_cache instead of memoize() for functions.")
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# For methods, we want the cache on the object, not on the class, in order
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# to not having to think about cache bloat and content becoming stale, so
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# we cannot set up the cache here.
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return decorate(func, _memoize)
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