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calibre-web/vendor/flask_login.py
OzzieIsaacs bbf6d9b026 Translation of UI (german and english) 
Bugfix for feeds
    - removed categories related and up
    - load new books now working
    - category random now working
login page is free of non accessible elements
boolean custom column is vivible in UI
books with only with certain languages can be shown
book shelfs can be deleted from UI
Anonymous user view is more resticted
Added browse of series in sidebar
Dependencys in vendor folder are updated to newer versions (licencs files are now present)
Bugfix editing Authors names
Made upload on windows working
2016-11-09 19:24:33 +01:00

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# -*- coding: utf-8 -*-
'''
flask.ext.login
---------------
This module provides user session management for Flask. It lets you log
your users in and out in a database-independent manner.
:copyright: (c) 2011 by Matthew Frazier.
:license: MIT/X11, see LICENSE for more details.
'''
__version_info__ = ('0', '3', '2')
__version__ = '.'.join(__version_info__)
__author__ = 'Matthew Frazier'
__maintainer__ = 'Max Countryman'
__license__ = 'MIT/X11'
__copyright__ = '(c) 2011 by Matthew Frazier'
__all__ = ['LoginManager']
from flask import (_request_ctx_stack, abort, current_app, flash, redirect,
request, session, url_for, has_request_context)
from flask.signals import Namespace
from werkzeug.local import LocalProxy
from werkzeug.security import safe_str_cmp
from werkzeug.urls import url_decode, url_encode
from datetime import datetime, timedelta
from functools import wraps
from hashlib import sha512
import hmac
import warnings
import sys
if sys.version < '3': # pragma: no cover
from urlparse import urlparse, urlunparse
else: # pragma: no cover
from urllib.parse import urlparse, urlunparse
unicode = str
_signals = Namespace()
#: A proxy for the current user. If no user is logged in, this will be an
#: anonymous user
current_user = LocalProxy(lambda: _get_user())
#: The default name of the "remember me" cookie (``remember_token``)
COOKIE_NAME = 'remember_token'
#: The default time before the "remember me" cookie expires (365 days).
COOKIE_DURATION = timedelta(days=365)
#: Whether the "remember me" cookie requires Secure; defaults to ``None``
COOKIE_SECURE = None
#: Whether the "remember me" cookie uses HttpOnly or not; defaults to ``False``
COOKIE_HTTPONLY = False
#: The default flash message to display when users need to log in.
LOGIN_MESSAGE = u'Please log in to access this page.'
#: The default flash message category to display when users need to log in.
LOGIN_MESSAGE_CATEGORY = 'message'
#: The default flash message to display when users need to reauthenticate.
REFRESH_MESSAGE = u'Please reauthenticate to access this page.'
#: The default flash message category to display when users need to
#: reauthenticate.
REFRESH_MESSAGE_CATEGORY = 'message'
#: The default attribute to retreive the unicode id of the user
ID_ATTRIBUTE = 'get_id'
#: Default name of the auth header (``Authorization``)
AUTH_HEADER_NAME = 'Authorization'
# A set of session keys that are populated by Flask-Login. Use this set to
# purge keys safely and accurately.
SESSION_KEYS = set(['user_id', 'remember', '_id', '_fresh'])
class LoginManager(object):
'''
This object is used to hold the settings used for logging in. Instances of
:class:`LoginManager` are *not* bound to specific apps, so you can create
one in the main body of your code and then bind it to your
app in a factory function.
'''
def __init__(self, app=None, add_context_processor=True):
#: A class or factory function that produces an anonymous user, which
#: is used when no one is logged in.
self.anonymous_user = AnonymousUserMixin
#: The name of the view to redirect to when the user needs to log in.
#: (This can be an absolute URL as well, if your authentication
#: machinery is external to your application.)
self.login_view = None
#: Names of views to redirect to when the user needs to log in,
#: per blueprint. If the key value is set to None the value of
#: :attr:`login_view` will be used instead.
self.blueprint_login_views = {}
#: The message to flash when a user is redirected to the login page.
self.login_message = LOGIN_MESSAGE
#: The message category to flash when a user is redirected to the login
#: page.
self.login_message_category = LOGIN_MESSAGE_CATEGORY
#: The name of the view to redirect to when the user needs to
#: reauthenticate.
self.refresh_view = None
#: The message to flash when a user is redirected to the 'needs
#: refresh' page.
self.needs_refresh_message = REFRESH_MESSAGE
#: The message category to flash when a user is redirected to the
#: 'needs refresh' page.
self.needs_refresh_message_category = REFRESH_MESSAGE_CATEGORY
#: The mode to use session protection in. This can be either
#: ``'basic'`` (the default) or ``'strong'``, or ``None`` to disable
#: it.
self.session_protection = 'basic'
#: If present, used to translate flash messages ``self.login_message``
#: and ``self.needs_refresh_message``
self.localize_callback = None
self.token_callback = None
self.user_callback = None
self.unauthorized_callback = None
self.needs_refresh_callback = None
self.id_attribute = ID_ATTRIBUTE
self.header_callback = None
self.request_callback = None
if app is not None:
self.init_app(app, add_context_processor)
def setup_app(self, app, add_context_processor=True): # pragma: no cover
'''
This method has been deprecated. Please use
:meth:`LoginManager.init_app` instead.
'''
warnings.warn('Warning setup_app is deprecated. Please use init_app.',
DeprecationWarning)
self.init_app(app, add_context_processor)
def init_app(self, app, add_context_processor=True):
'''
Configures an application. This registers an `after_request` call, and
attaches this `LoginManager` to it as `app.login_manager`.
:param app: The :class:`flask.Flask` object to configure.
:type app: :class:`flask.Flask`
:param add_context_processor: Whether to add a context processor to
the app that adds a `current_user` variable to the template.
Defaults to ``True``.
:type add_context_processor: bool
'''
app.login_manager = self
app.after_request(self._update_remember_cookie)
self._login_disabled = app.config.get('LOGIN_DISABLED', False)
if add_context_processor:
app.context_processor(_user_context_processor)
def unauthorized(self):
'''
This is called when the user is required to log in. If you register a
callback with :meth:`LoginManager.unauthorized_handler`, then it will
be called. Otherwise, it will take the following actions:
- Flash :attr:`LoginManager.login_message` to the user.
- If the app is using blueprints find the login view for
the current blueprint using `blueprint_login_views`. If the app
is not using blueprints or the login view for the current
blueprint is not specified use the value of `login_view`.
Redirect the user to the login view. (The page they were
attempting to access will be passed in the ``next`` query
string variable, so you can redirect there if present instead
of the homepage.)
If :attr:`LoginManager.login_view` is not defined, then it will simply
raise a HTTP 401 (Unauthorized) error instead.
This should be returned from a view or before/after_request function,
otherwise the redirect will have no effect.
'''
user_unauthorized.send(current_app._get_current_object())
if self.unauthorized_callback:
return self.unauthorized_callback()
if request.blueprint in self.blueprint_login_views:
login_view = self.blueprint_login_views[request.blueprint]
else:
login_view = self.login_view
if not login_view:
abort(401)
if self.login_message:
if self.localize_callback is not None:
flash(self.localize_callback(self.login_message),
category=self.login_message_category)
else:
flash(self.login_message, category=self.login_message_category)
return redirect(login_url(login_view, request.url))
def user_loader(self, callback):
'''
This sets the callback for reloading a user from the session. The
function you set should take a user ID (a ``unicode``) and return a
user object, or ``None`` if the user does not exist.
:param callback: The callback for retrieving a user object.
:type callback: callable
'''
self.user_callback = callback
return callback
def header_loader(self, callback):
'''
This sets the callback for loading a user from a header value.
The function you set should take an authentication token and
return a user object, or `None` if the user does not exist.
:param callback: The callback for retrieving a user object.
:type callback: callable
'''
self.header_callback = callback
return callback
def request_loader(self, callback):
'''
This sets the callback for loading a user from a Flask request.
The function you set should take Flask request object and
return a user object, or `None` if the user does not exist.
:param callback: The callback for retrieving a user object.
:type callback: callable
'''
self.request_callback = callback
return callback
def token_loader(self, callback):
'''
This sets the callback for loading a user from an authentication
token. The function you set should take an authentication token
(a ``unicode``, as returned by a user's `get_auth_token` method) and
return a user object, or ``None`` if the user does not exist.
:param callback: The callback for retrieving a user object.
:type callback: callable
'''
self.token_callback = callback
return callback
def unauthorized_handler(self, callback):
'''
This will set the callback for the `unauthorized` method, which among
other things is used by `login_required`. It takes no arguments, and
should return a response to be sent to the user instead of their
normal view.
:param callback: The callback for unauthorized users.
:type callback: callable
'''
self.unauthorized_callback = callback
return callback
def needs_refresh_handler(self, callback):
'''
This will set the callback for the `needs_refresh` method, which among
other things is used by `fresh_login_required`. It takes no arguments,
and should return a response to be sent to the user instead of their
normal view.
:param callback: The callback for unauthorized users.
:type callback: callable
'''
self.needs_refresh_callback = callback
return callback
def needs_refresh(self):
'''
This is called when the user is logged in, but they need to be
reauthenticated because their session is stale. If you register a
callback with `needs_refresh_handler`, then it will be called.
Otherwise, it will take the following actions:
- Flash :attr:`LoginManager.needs_refresh_message` to the user.
- Redirect the user to :attr:`LoginManager.refresh_view`. (The page
they were attempting to access will be passed in the ``next``
query string variable, so you can redirect there if present
instead of the homepage.)
If :attr:`LoginManager.refresh_view` is not defined, then it will
simply raise a HTTP 401 (Unauthorized) error instead.
This should be returned from a view or before/after_request function,
otherwise the redirect will have no effect.
'''
user_needs_refresh.send(current_app._get_current_object())
if self.needs_refresh_callback:
return self.needs_refresh_callback()
if not self.refresh_view:
abort(401)
if self.localize_callback is not None:
flash(self.localize_callback(self.needs_refresh_message),
category=self.needs_refresh_message_category)
else:
flash(self.needs_refresh_message,
category=self.needs_refresh_message_category)
return redirect(login_url(self.refresh_view, request.url))
def reload_user(self, user=None):
ctx = _request_ctx_stack.top
if user is None:
user_id = session.get('user_id')
if user_id is None:
ctx.user = self.anonymous_user()
else:
if self.user_callback is None:
raise Exception(
"No user_loader has been installed for this "
"LoginManager. Add one with the "
"'LoginManager.user_loader' decorator.")
user = self.user_callback(user_id)
if user is None:
ctx.user = self.anonymous_user()
else:
ctx.user = user
else:
ctx.user = user
def _load_user(self):
'''Loads user from session or remember_me cookie as applicable'''
user_accessed.send(current_app._get_current_object())
# first check SESSION_PROTECTION
config = current_app.config
if config.get('SESSION_PROTECTION', self.session_protection):
deleted = self._session_protection()
if deleted:
return self.reload_user()
# If a remember cookie is set, and the session is not, move the
# cookie user ID to the session.
#
# However, the session may have been set if the user has been
# logged out on this request, 'remember' would be set to clear,
# so we should check for that and not restore the session.
is_missing_user_id = 'user_id' not in session
if is_missing_user_id:
cookie_name = config.get('REMEMBER_COOKIE_NAME', COOKIE_NAME)
header_name = config.get('AUTH_HEADER_NAME', AUTH_HEADER_NAME)
has_cookie = (cookie_name in request.cookies and
session.get('remember') != 'clear')
if has_cookie:
return self._load_from_cookie(request.cookies[cookie_name])
elif self.request_callback:
return self._load_from_request(request)
elif header_name in request.headers:
return self._load_from_header(request.headers[header_name])
return self.reload_user()
def _session_protection(self):
sess = session._get_current_object()
ident = _create_identifier()
app = current_app._get_current_object()
mode = app.config.get('SESSION_PROTECTION', self.session_protection)
# if the sess is empty, it's an anonymous user or just logged out
# so we can skip this
if sess and ident != sess.get('_id', None):
if mode == 'basic' or sess.permanent:
sess['_fresh'] = False
session_protected.send(app)
return False
elif mode == 'strong':
for k in SESSION_KEYS:
sess.pop(k, None)
sess['remember'] = 'clear'
session_protected.send(app)
return True
return False
def _load_from_cookie(self, cookie):
if self.token_callback:
user = self.token_callback(cookie)
if user is not None:
session['user_id'] = getattr(user, self.id_attribute)()
session['_fresh'] = False
_request_ctx_stack.top.user = user
else:
self.reload_user()
else:
user_id = decode_cookie(cookie)
if user_id is not None:
session['user_id'] = user_id
session['_fresh'] = False
self.reload_user()
if _request_ctx_stack.top.user is not None:
app = current_app._get_current_object()
user_loaded_from_cookie.send(app, user=_get_user())
def _load_from_header(self, header):
user = None
if self.header_callback:
user = self.header_callback(header)
if user is not None:
self.reload_user(user=user)
app = current_app._get_current_object()
user_loaded_from_header.send(app, user=_get_user())
else:
self.reload_user()
def _load_from_request(self, request):
user = None
if self.request_callback:
user = self.request_callback(request)
if user is not None:
self.reload_user(user=user)
app = current_app._get_current_object()
user_loaded_from_request.send(app, user=_get_user())
else:
self.reload_user()
def _update_remember_cookie(self, response):
# Don't modify the session unless there's something to do.
if 'remember' in session:
operation = session.pop('remember', None)
if operation == 'set' and 'user_id' in session:
self._set_cookie(response)
elif operation == 'clear':
self._clear_cookie(response)
return response
def _set_cookie(self, response):
# cookie settings
config = current_app.config
cookie_name = config.get('REMEMBER_COOKIE_NAME', COOKIE_NAME)
duration = config.get('REMEMBER_COOKIE_DURATION', COOKIE_DURATION)
domain = config.get('REMEMBER_COOKIE_DOMAIN')
path = config.get('REMEMBER_COOKIE_PATH', '/')
secure = config.get('REMEMBER_COOKIE_SECURE', COOKIE_SECURE)
httponly = config.get('REMEMBER_COOKIE_HTTPONLY', COOKIE_HTTPONLY)
# prepare data
if self.token_callback:
data = current_user.get_auth_token()
else:
data = encode_cookie(unicode(session['user_id']))
expires = datetime.utcnow() + duration
# actually set it
response.set_cookie(cookie_name,
value=data,
expires=expires,
domain=domain,
path=path,
secure=secure,
httponly=httponly)
def _clear_cookie(self, response):
config = current_app.config
cookie_name = config.get('REMEMBER_COOKIE_NAME', COOKIE_NAME)
domain = config.get('REMEMBER_COOKIE_DOMAIN')
path = config.get('REMEMBER_COOKIE_PATH', '/')
response.delete_cookie(cookie_name, domain=domain, path=path)
class UserMixin(object):
'''
This provides default implementations for the methods that Flask-Login
expects user objects to have.
'''
@property
def is_active(self):
return True
@property
def is_authenticated(self):
return True
@property
def is_anonymous(self):
return False
def get_id(self):
try:
return unicode(self.id)
except AttributeError:
raise NotImplementedError('No `id` attribute - override `get_id`')
def __eq__(self, other):
'''
Checks the equality of two `UserMixin` objects using `get_id`.
'''
if isinstance(other, UserMixin):
return self.get_id() == other.get_id()
return NotImplemented
def __ne__(self, other):
'''
Checks the inequality of two `UserMixin` objects using `get_id`.
'''
equal = self.__eq__(other)
if equal is NotImplemented:
return NotImplemented
return not equal
if sys.version_info[0] != 2: # pragma: no cover
# Python 3 implicitly set __hash__ to None if we override __eq__
# We set it back to its default implementation
__hash__ = object.__hash__
class AnonymousUserMixin(object):
'''
This is the default object for representing an anonymous user.
'''
@property
def is_authenticated(self):
return False
@property
def is_active(self):
return False
@property
def is_anonymous(self):
return True
def get_id(self):
return
def encode_cookie(payload):
'''
This will encode a ``unicode`` value into a cookie, and sign that cookie
with the app's secret key.
:param payload: The value to encode, as `unicode`.
:type payload: unicode
'''
return u'{0}|{1}'.format(payload, _cookie_digest(payload))
def decode_cookie(cookie):
'''
This decodes a cookie given by `encode_cookie`. If verification of the
cookie fails, ``None`` will be implicitly returned.
:param cookie: An encoded cookie.
:type cookie: str
'''
try:
payload, digest = cookie.rsplit(u'|', 1)
if hasattr(digest, 'decode'):
digest = digest.decode('ascii') # pragma: no cover
except ValueError:
return
if safe_str_cmp(_cookie_digest(payload), digest):
return payload
def make_next_param(login_url, current_url):
'''
Reduces the scheme and host from a given URL so it can be passed to
the given `login` URL more efficiently.
:param login_url: The login URL being redirected to.
:type login_url: str
:param current_url: The URL to reduce.
:type current_url: str
'''
l = urlparse(login_url)
c = urlparse(current_url)
if (not l.scheme or l.scheme == c.scheme) and \
(not l.netloc or l.netloc == c.netloc):
return urlunparse(('', '', c.path, c.params, c.query, ''))
return current_url
def login_url(login_view, next_url=None, next_field='next'):
'''
Creates a URL for redirecting to a login page. If only `login_view` is
provided, this will just return the URL for it. If `next_url` is provided,
however, this will append a ``next=URL`` parameter to the query string
so that the login view can redirect back to that URL.
:param login_view: The name of the login view. (Alternately, the actual
URL to the login view.)
:type login_view: str
:param next_url: The URL to give the login view for redirection.
:type next_url: str
:param next_field: What field to store the next URL in. (It defaults to
``next``.)
:type next_field: str
'''
if login_view.startswith(('https://', 'http://', '/')):
base = login_view
else:
base = url_for(login_view)
if next_url is None:
return base
parts = list(urlparse(base))
md = url_decode(parts[4])
md[next_field] = make_next_param(base, next_url)
parts[4] = url_encode(md, sort=True)
return urlunparse(parts)
def make_secure_token(*args, **options):
'''
This will create a secure token that you can use as an authentication
token for your users. It uses heavy-duty HMAC encryption to prevent people
from guessing the information. (To make it even more effective, if you
will never need to regenerate the token, you can pass some random data
as one of the arguments.)
:param \*args: The data to include in the token.
:type args: args
:param \*\*options: To manually specify a secret key, pass ``key=THE_KEY``.
Otherwise, the ``current_app`` secret key will be used.
:type \*\*options: kwargs
'''
key = options.get('key')
key = _secret_key(key)
l = [s if isinstance(s, bytes) else s.encode('utf-8') for s in args]
payload = b'\0'.join(l)
token_value = hmac.new(key, payload, sha512).hexdigest()
if hasattr(token_value, 'decode'): # pragma: no cover
token_value = token_value.decode('utf-8') # ensure bytes
return token_value
def login_fresh():
'''
This returns ``True`` if the current login is fresh.
'''
return session.get('_fresh', False)
def login_user(user, remember=False, force=False, fresh=True):
'''
Logs a user in. You should pass the actual user object to this. If the
user's `is_active` property is ``False``, they will not be logged in
unless `force` is ``True``.
This will return ``True`` if the log in attempt succeeds, and ``False`` if
it fails (i.e. because the user is inactive).
:param user: The user object to log in.
:type user: object
:param remember: Whether to remember the user after their session expires.
Defaults to ``False``.
:type remember: bool
:param force: If the user is inactive, setting this to ``True`` will log
them in regardless. Defaults to ``False``.
:type force: bool
:param fresh: setting this to ``False`` will log in the user with a session
marked as not "fresh". Defaults to ``True``.
:type fresh: bool
'''
if not force and not user.is_active:
return False
user_id = getattr(user, current_app.login_manager.id_attribute)()
session['user_id'] = user_id
session['_fresh'] = fresh
session['_id'] = _create_identifier()
if remember:
session['remember'] = 'set'
_request_ctx_stack.top.user = user
user_logged_in.send(current_app._get_current_object(), user=_get_user())
return True
def logout_user():
'''
Logs a user out. (You do not need to pass the actual user.) This will
also clean up the remember me cookie if it exists.
'''
user = _get_user()
if 'user_id' in session:
session.pop('user_id')
if '_fresh' in session:
session.pop('_fresh')
cookie_name = current_app.config.get('REMEMBER_COOKIE_NAME', COOKIE_NAME)
if cookie_name in request.cookies:
session['remember'] = 'clear'
user_logged_out.send(current_app._get_current_object(), user=user)
current_app.login_manager.reload_user()
return True
def confirm_login():
'''
This sets the current session as fresh. Sessions become stale when they
are reloaded from a cookie.
'''
session['_fresh'] = True
session['_id'] = _create_identifier()
user_login_confirmed.send(current_app._get_current_object())
def login_required(func):
'''
If you decorate a view with this, it will ensure that the current user is
logged in and authenticated before calling the actual view. (If they are
not, it calls the :attr:`LoginManager.unauthorized` callback.) For
example::
@app.route('/post')
@login_required
def post():
pass
If there are only certain times you need to require that your user is
logged in, you can do so with::
if not current_user.is_authenticated:
return current_app.login_manager.unauthorized()
...which is essentially the code that this function adds to your views.
It can be convenient to globally turn off authentication when unit testing.
To enable this, if the application configuration variable `LOGIN_DISABLED`
is set to `True`, this decorator will be ignored.
:param func: The view function to decorate.
:type func: function
'''
@wraps(func)
def decorated_view(*args, **kwargs):
if current_app.login_manager._login_disabled:
return func(*args, **kwargs)
elif not current_user.is_authenticated:
return current_app.login_manager.unauthorized()
return func(*args, **kwargs)
return decorated_view
def fresh_login_required(func):
'''
If you decorate a view with this, it will ensure that the current user's
login is fresh - i.e. there session was not restored from a 'remember me'
cookie. Sensitive operations, like changing a password or e-mail, should
be protected with this, to impede the efforts of cookie thieves.
If the user is not authenticated, :meth:`LoginManager.unauthorized` is
called as normal. If they are authenticated, but their session is not
fresh, it will call :meth:`LoginManager.needs_refresh` instead. (In that
case, you will need to provide a :attr:`LoginManager.refresh_view`.)
Behaves identically to the :func:`login_required` decorator with respect
to configutation variables.
:param func: The view function to decorate.
:type func: function
'''
@wraps(func)
def decorated_view(*args, **kwargs):
if current_app.login_manager._login_disabled:
return func(*args, **kwargs)
elif not current_user.is_authenticated:
return current_app.login_manager.unauthorized()
elif not login_fresh():
return current_app.login_manager.needs_refresh()
return func(*args, **kwargs)
return decorated_view
def set_login_view(login_view, blueprint=None):
'''
Sets the login view for the app or blueprint. If a blueprint is passed,
the login view is set for this blueprint on ``blueprint_login_views``.
:param login_view: The user object to log in.
:type login_view: str
:param blueprint: The blueprint which this login view should be set on.
Defaults to ``None``.
:type blueprint: object
'''
num_login_views = len(current_app.login_manager.blueprint_login_views)
if blueprint is not None or num_login_views != 0:
(current_app.login_manager
.blueprint_login_views[blueprint.name]) = login_view
if (current_app.login_manager.login_view is not None and
None not in current_app.login_manager.blueprint_login_views):
(current_app.login_manager
.blueprint_login_views[None]) = (current_app.login_manager
.login_view)
current_app.login_manager.login_view = None
else:
current_app.login_manager.login_view = login_view
def _get_user():
if has_request_context() and not hasattr(_request_ctx_stack.top, 'user'):
current_app.login_manager._load_user()
return getattr(_request_ctx_stack.top, 'user', None)
def _cookie_digest(payload, key=None):
key = _secret_key(key)
return hmac.new(key, payload.encode('utf-8'), sha512).hexdigest()
def _get_remote_addr():
address = request.headers.get('X-Forwarded-For', request.remote_addr)
if address is not None:
# An 'X-Forwarded-For' header includes a comma separated list of the
# addresses, the first address being the actual remote address.
address = address.encode('utf-8').split(b',')[0].strip()
return address
def _create_identifier():
user_agent = request.headers.get('User-Agent')
if user_agent is not None:
user_agent = user_agent.encode('utf-8')
base = '{0}|{1}'.format(_get_remote_addr(), user_agent)
if str is bytes:
base = unicode(base, 'utf-8', errors='replace') # pragma: no cover
h = sha512()
h.update(base.encode('utf8'))
return h.hexdigest()
def _user_context_processor():
return dict(current_user=_get_user())
def _secret_key(key=None):
if key is None:
key = current_app.config['SECRET_KEY']
if isinstance(key, unicode): # pragma: no cover
key = key.encode('latin1') # ensure bytes
return key
# Signals
#: Sent when a user is logged in. In addition to the app (which is the
#: sender), it is passed `user`, which is the user being logged in.
user_logged_in = _signals.signal('logged-in')
#: Sent when a user is logged out. In addition to the app (which is the
#: sender), it is passed `user`, which is the user being logged out.
user_logged_out = _signals.signal('logged-out')
#: Sent when the user is loaded from the cookie. In addition to the app (which
#: is the sender), it is passed `user`, which is the user being reloaded.
user_loaded_from_cookie = _signals.signal('loaded-from-cookie')
#: Sent when the user is loaded from the header. In addition to the app (which
#: is the #: sender), it is passed `user`, which is the user being reloaded.
user_loaded_from_header = _signals.signal('loaded-from-header')
#: Sent when the user is loaded from the request. In addition to the app (which
#: is the #: sender), it is passed `user`, which is the user being reloaded.
user_loaded_from_request = _signals.signal('loaded-from-request')
#: Sent when a user's login is confirmed, marking it as fresh. (It is not
#: called for a normal login.)
#: It receives no additional arguments besides the app.
user_login_confirmed = _signals.signal('login-confirmed')
#: Sent when the `unauthorized` method is called on a `LoginManager`. It
#: receives no additional arguments besides the app.
user_unauthorized = _signals.signal('unauthorized')
#: Sent when the `needs_refresh` method is called on a `LoginManager`. It
#: receives no additional arguments besides the app.
user_needs_refresh = _signals.signal('needs-refresh')
#: Sent whenever the user is accessed/loaded
#: receives no additional arguments besides the app.
user_accessed = _signals.signal('accessed')
#: Sent whenever session protection takes effect, and a session is either
#: marked non-fresh or deleted. It receives no additional arguments besides
#: the app.
session_protected = _signals.signal('session-protected')
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