def user_login_failed(self,
sender,
credentials: dict,
request=None,
**kwargs):
super().user_login_failed(sender, credentials, request, **kwargs)
username = credentials.get("username")
user_locked = self._is_user_locked(
username=credentials.get("username"))
if user_locked:
# Let's not create a HealthcareFailedAccessAttempt if the user has
# been blocked by an admin
request.axes_locked_out = True
user_locked_out.send(
"axes",
request=request,
username=username,
ip_address=request.axes_ip_address,
)
else:
HealthcareFailedAccessAttempt.objects.create(username=username)
attempts = self.get_healthcareuser_failures(request, credentials)
if attempts >= settings.AXES_SLOW_FAILURE_LIMIT:
request.axes_locked_out = True
user_locked_out.send(
"axes",
request=request,
username=username,
ip_address=request.axes_ip_address,
)
def user_login_failed(
self,
sender,
credentials: dict,
request: AxesHttpRequest = None,
**kwargs
): # pylint: disable=too-many-locals
"""
When user login fails, save attempt record in cache and lock user out if necessary.
:raises AxesSignalPermissionDenied: if user should be locked out.
"""
if request is None:
log.error('AXES: AxesCacheHandler.user_login_failed does not function without a request.')
return
if not hasattr(request, 'axes_attempt_time'):
log.error('AXES: AxesCacheHandler.user_login_failed needs a valid AxesHttpRequest object.')
return
username = get_client_username(request, credentials)
client_str = get_client_str(username, request.axes_ip_address, request.axes_user_agent, request.axes_path_info)
if self.is_whitelisted(request, credentials):
log.info('AXES: Login failed from whitelisted client %s.', client_str)
return
failures_since_start = 1 + self.get_failures(request, credentials)
if failures_since_start > 1:
log.warning(
'AXES: Repeated login failure by %s. Count = %d of %d. Updating existing record in the cache.',
client_str,
failures_since_start,
settings.AXES_FAILURE_LIMIT,
)
else:
log.warning(
'AXES: New login failure by %s. Creating new record in the cache.',
client_str,
)
cache_key = get_client_cache_key(request, credentials)
self.cache.set(cache_key, failures_since_start, self.cache_timeout)
if failures_since_start >= settings.AXES_FAILURE_LIMIT:
log.warning('AXES: Locking out %s after repeated login failures.', client_str)
user_locked_out.send(
'axes',
request=request,
username=username,
ip_address=request.axes_ip_address,
)
raise AxesSignalPermissionDenied('Locked out due to repeated login failures.')
def user_login_failed(self, sender, credentials, request=None, **kwargs): # pylint: disable=too-many-locals
"""
When user login fails, save attempt record in cache and lock user out if necessary.
:raises AxesSignalPermissionDenied: if user should be locked out.
"""
if request is None:
log.error(
'AXES: AxesCacheHandler.user_login_failed does not function without a request.'
)
return
username = get_client_username(request, credentials)
ip_address = get_client_ip_address(request)
user_agent = get_client_user_agent(request)
path_info = get_client_path_info(request)
client_str = get_client_str(username, ip_address, user_agent,
path_info)
if self.is_whitelisted(request, credentials):
log.info('AXES: Login failed from whitelisted client %s.',
client_str)
return
failures_since_start = 1 + self.get_failures(request, credentials)
if failures_since_start > 1:
log.warning(
'AXES: Repeated login failure by %s. Count = %d of %d. Updating existing record in the cache.',
client_str,
failures_since_start,
settings.AXES_FAILURE_LIMIT,
)
else:
log.warning(
'AXES: New login failure by %s. Creating new record in the cache.',
client_str,
)
cache_key = get_client_cache_key(request, credentials)
self.cache.set(cache_key, failures_since_start, self.cache_timeout)
if failures_since_start >= settings.AXES_FAILURE_LIMIT:
log.warning('AXES: Locking out %s after repeated login failures.',
client_str)
user_locked_out.send(
'axes',
request=request,
username=username,
ip_address=ip_address,
)
raise AxesSignalPermissionDenied(
'Locked out due to repeated login failures.')
def check_request(request, login_unsuccessful):
ip_address = get_ip(request)
username = request.POST.get('username', None)
failures = 0
attempts = get_user_attempts(request)
for attempt in attempts:
failures = max(failures, attempt.failures_since_start)
if login_unsuccessful:
# add a failed attempt for this user
failures += 1
# Create an AccessAttempt record if the login wasn't successful
# has already attempted, update the info
if len(attempts):
for attempt in attempts:
attempt.get_data = '%s\n---------\n%s' % (
attempt.get_data,
query2str(request.GET.items()),
)
attempt.post_data = '%s\n---------\n%s' % (
attempt.post_data,
query2str(request.POST.items())
)
attempt.http_accept = request.META.get('HTTP_ACCEPT', '<unknown>')
attempt.path_info = request.META.get('PATH_INFO', '<unknown>')
attempt.failures_since_start = failures
attempt.attempt_time = datetime.now()
attempt.save()
log.info('AXES: Repeated login failure by %s. Updating access '
'record. Count = %s' %
(attempt.ip_address, failures))
else:
create_new_failure_records(request, failures)
else:
# user logged in -- forget the failed attempts
failures = 0
trusted_record_exists = False
for attempt in attempts:
if not attempt.trusted:
attempt.delete()
else:
trusted_record_exists = True
attempt.failures_since_start = 0
attempt.save()
if trusted_record_exists is False:
create_new_trusted_record(request)
user_lockable = is_user_lockable(request)
# no matter what, we want to lock them out if they're past the number of
# attempts allowed, unless the user is set to notlockable
if failures > FAILURE_LIMIT and LOCK_OUT_AT_FAILURE and user_lockable:
# We log them out in case they actually managed to enter the correct
# password
logout(request)
log.warn('AXES: locked out %s after repeated login attempts.' %
(ip_address,))
# send signal when someone is locked out.
user_locked_out.send("axes", request=request, username=username, ip_address=ip_address)
# if a trusted login has violated lockout, revoke trust
for attempt in [a for a in attempts if a.trusted]:
attempt.delete()
create_new_failure_records(request, failures)
return False
return True
def user_login_failed(self,
sender,
credentials: dict,
request=None,
**kwargs): # pylint: disable=too-many-locals
"""
When user login fails, save AccessAttempt record in database and lock user out if necessary.
:raises AxesSignalPermissionDenied: if user should be locked out.
"""
if request is None:
log.error(
"AXES: AxesDatabaseHandler.user_login_failed does not function without a request."
)
return
# 1. database query: Clean up expired user attempts from the database before logging new attempts
clean_expired_user_attempts(request.axes_attempt_time)
username = get_client_username(request, credentials)
client_str = get_client_str(
username,
request.axes_ip_address,
request.axes_user_agent,
request.axes_path_info,
)
# This replaces null byte chars that crash saving failures, meaning an attacker doesn't get locked out.
get_data = get_query_str(request.GET).replace("\0", "0x00")
post_data = get_query_str(request.POST).replace("\0", "0x00")
if self.is_whitelisted(request, credentials):
log.info("AXES: Login failed from whitelisted client %s.",
client_str)
return
# 2. database query: Calculate the current maximum failure number from the existing attempts
failures_since_start = 1 + self.get_failures(request, credentials)
# 3. database query: Insert or update access records with the new failure data
try:
attempt = AccessAttempt.objects.get(
username=username,
ip_address=request.axes_ip_address,
user_agent=request.axes_user_agent,
)
# Update failed attempt information but do not touch the username, IP address, or user agent fields,
# because attackers can request the site with multiple different configurations
# in order to bypass the defense mechanisms that are used by the site.
log.warning(
"AXES: Repeated login failure by %s. Count = %d of %d. Updating existing record in the database.",
client_str,
attempt.failures_since_start,
get_failure_limit(request, credentials),
)
separator = "\n---------\n"
attempt.get_data = Concat("get_data", Value(separator + get_data))
attempt.post_data = Concat("post_data",
Value(separator + post_data))
attempt.http_accept = request.axes_http_accept
attempt.path_info = request.axes_path_info
attempt.failures_since_start += 1
attempt.attempt_time = request.axes_attempt_time
attempt.save()
except AccessAttempt.DoesNotExist:
# Record failed attempt with all the relevant information.
# Filtering based on username, IP address and user agent handled elsewhere,
# and this handler just records the available information for further use.
if not (settings.AXES_ONLY_USER_FAILURES and username is None):
log.warning(
"AXES: New login failure by %s. Creating new record in the database.",
client_str,
)
AccessAttempt.objects.create(
username=username,
ip_address=request.axes_ip_address,
user_agent=request.axes_user_agent,
get_data=get_data,
post_data=post_data,
http_accept=request.axes_http_accept,
path_info=request.axes_path_info,
failures_since_start=1,
attempt_time=request.axes_attempt_time,
)
else:
log.warning(
"AXES: Username is None and AXES_ONLY_USER_FAILURES is enable, New record won't be created."
)
if (settings.AXES_LOCK_OUT_AT_FAILURE
and failures_since_start >= get_failure_limit(
request, credentials)):
log.warning("AXES: Locking out %s after repeated login failures.",
client_str)
request.axes_locked_out = True
user_locked_out.send(
"axes",
request=request,
username=username,
ip_address=request.axes_ip_address,
)
def check_request(request, login_unsuccessful):
ip_address = get_ip(request)
username = request.POST.get('username', None)
failures = 0
attempts = get_user_attempts(request)
for attempt in attempts:
failures = max(failures, attempt.failures_since_start)
if login_unsuccessful:
# add a failed attempt for this user
failures += 1
# Create an AccessAttempt record if the login wasn't successful
# has already attempted, update the info
if len(attempts):
for attempt in attempts:
attempt.get_data = '%s\n---------\n%s' % (
attempt.get_data,
query2str(request.GET.items()),
)
attempt.post_data = '%s\n---------\n%s' % (
attempt.post_data, query2str(request.POST.items()))
attempt.http_accept = request.META.get('HTTP_ACCEPT',
'<unknown>')
attempt.path_info = request.META.get('PATH_INFO', '<unknown>')
attempt.failures_since_start = failures
attempt.attempt_time = datetime.now()
attempt.save()
log.info('AXES: Repeated login failure by %s. Updating access '
'record. Count = %s' % (attempt.ip_address, failures))
else:
create_new_failure_records(request, failures)
else:
# user logged in -- forget the failed attempts
failures = 0
trusted_record_exists = False
for attempt in attempts:
if not attempt.trusted:
attempt.delete()
else:
trusted_record_exists = True
attempt.failures_since_start = 0
attempt.save()
if trusted_record_exists is False:
create_new_trusted_record(request)
user_lockable = is_user_lockable(request)
# no matter what, we want to lock them out if they're past the number of
# attempts allowed, unless the user is set to notlockable
if failures > FAILURE_LIMIT and LOCK_OUT_AT_FAILURE and user_lockable:
# We log them out in case they actually managed to enter the correct
# password
logout(request)
log.warn('AXES: locked out %s after repeated login attempts.' %
(ip_address, ))
# send signal when someone is locked out.
user_locked_out.send("axes",
request=request,
username=username,
ip_address=ip_address)
# if a trusted login has violated lockout, revoke trust
for attempt in [a for a in attempts if a.trusted]:
attempt.delete()
create_new_failure_records(request, failures)
return False
return True
def user_login_failed(self, sender, credentials, request, **kwargs): # pylint: disable=unused-argument
"""
When user login fails, save AccessAttempt record in database and lock user out if necessary.
:raises AxesSignalPermissionDenied: if user should is locked out
"""
if request is None:
log.warning(
'AxesHandler.user_login_failed does not function without a request.'
)
return
username = get_client_username(request, credentials)
ip_address = get_client_ip(request)
user_agent = get_client_user_agent(request)
path_info = request.META.get('PATH_INFO', '<unknown>')[:255]
http_accept = request.META.get('HTTP_ACCEPT', '<unknown>')[:1025]
client_str = get_client_str(username, ip_address, user_agent,
path_info)
if settings.AXES_NEVER_LOCKOUT_WHITELIST and ip_in_whitelist(
ip_address):
log.info('Login failed from whitelisted IP %s.', ip_address)
return
attempts = get_user_attempts(request, credentials)
cache_key = get_cache_key(request, credentials)
num_failures_cached = get_axes_cache().get(cache_key)
if num_failures_cached:
failures = num_failures_cached
elif attempts:
failures = attempts.aggregate(
Max('failures_since_start'), )['failures_since_start__max']
else:
failures = 0
# add a failed attempt for this user
failures += 1
get_axes_cache().set(
cache_key,
failures,
get_cache_timeout(),
)
if attempts:
# Update existing attempt information but do not touch the username, ip_address, or user_agent fields,
# because attackers can request the site with multiple different usernames, addresses, or programs.
for attempt in attempts:
template = '{}\n---------\n{}'
attempt.get_data = template.format(
attempt.get_data,
query2str(request.GET),
)
attempt.post_data = template.format(attempt.post_data,
query2str(request.POST))
attempt.http_accept = http_accept
attempt.path_info = path_info
attempt.failures_since_start = failures
attempt.attempt_time = now()
attempt.save()
log.info(
'AXES: Repeated login failure by %s. Count = %d of %d',
client_str,
failures,
settings.AXES_FAILURE_LIMIT,
)
else:
# Record failed attempt. Whether or not the IP address or user agent is
# used in counting failures is handled elsewhere, so we just record # everything here.
AccessAttempt.objects.create(
username=username,
ip_address=ip_address,
user_agent=user_agent,
get_data=query2str(request.GET),
post_data=query2str(request.POST),
http_accept=http_accept,
path_info=path_info,
failures_since_start=failures,
)
log.info(
'AXES: New login failure by %s. Creating access record.',
client_str,
)
if is_already_locked(request, credentials):
log.warning(
'AXES: Locked out %s after repeated login failures.',
client_str,
)
user_locked_out.send(
'axes',
request=request,
username=username,
ip_address=ip_address,
)
raise AxesSignalPermissionDenied(
'Locked out due to repeated login failures.')
def user_login_failed(self,
sender,
credentials: dict,
request=None,
**kwargs): # pylint: disable=too-many-locals
"""
When user login fails, save attempt record in cache and lock user out if necessary.
:raises AxesSignalPermissionDenied: if user should be locked out.
"""
if request is None:
log.error(
"AXES: AxesCacheHandler.user_login_failed does not function without a request."
)
return
username = get_client_username(request, credentials)
if settings.AXES_ONLY_USER_FAILURES and username is None:
log.warning(
"AXES: Username is None and AXES_ONLY_USER_FAILURES is enabled, new record will NOT be created."
)
return
client_str = get_client_str(
username,
request.axes_ip_address,
request.axes_user_agent,
request.axes_path_info,
request,
)
if self.is_whitelisted(request, credentials):
log.info("AXES: Login failed from whitelisted client %s.",
client_str)
return
failures_since_start = 1 + self.get_failures(request, credentials)
request.axes_failures_since_start = failures_since_start
if failures_since_start > 1:
log.warning(
"AXES: Repeated login failure by %s. Count = %d of %d. Updating existing record in the cache.",
client_str,
failures_since_start,
get_failure_limit(request, credentials),
)
else:
log.warning(
"AXES: New login failure by %s. Creating new record in the cache.",
client_str,
)
cache_keys = get_client_cache_key(request, credentials)
for cache_key in cache_keys:
failures = self.cache.get(cache_key, default=0)
self.cache.set(cache_key, failures + 1, self.cache_timeout)
if (settings.AXES_LOCK_OUT_AT_FAILURE
and failures_since_start >= get_failure_limit(
request, credentials)):
log.warning("AXES: Locking out %s after repeated login failures.",
client_str)
request.axes_locked_out = True
user_locked_out.send(
"axes",
request=request,
username=username,
ip_address=request.axes_ip_address,
)
def check_request(request, login_unsuccessful):
ip_address = get_ip(request)
username = request.POST.get(USERNAME_FORM_FIELD, None)
failures = 0
attempts = get_user_attempts(request)
cache_hash_key = get_cache_key(request)
cache_timeout = get_cache_timeout()
failures_cached = cache.get(cache_hash_key)
if failures_cached is not None:
failures = failures_cached
else:
for attempt in attempts:
failures = max(failures, attempt.failures_since_start)
if login_unsuccessful:
# add a failed attempt for this user
failures += 1
cache.set(cache_hash_key, failures, cache_timeout)
# Create an AccessAttempt record if the login wasn't successful
# has already attempted, update the info
if len(attempts):
for attempt in attempts:
attempt.get_data = '%s\n---------\n%s' % (
attempt.get_data,
query2str(request.GET),
)
attempt.post_data = '%s\n---------\n%s' % (
attempt.post_data,
query2str(request.POST)
)
attempt.http_accept = \
request.META.get('HTTP_ACCEPT', '<unknown>')[:1025]
attempt.path_info = \
request.META.get('PATH_INFO', '<unknown>')[:255]
attempt.failures_since_start = failures
attempt.attempt_time = datetime.now()
attempt.save()
log.info(
'AXES: Repeated login failure by %s. Updating access '
'record. Count = %s' % (attempt.ip_address, failures)
)
else:
create_new_failure_records(request, failures)
else:
# user logged in -- forget the failed attempts
failures = 0
trusted_record_exists = False
for attempt in attempts:
if not attempt.trusted:
attempt.delete()
failures_cached = cache.get(cache_hash_key)
if failures_cached is not None:
cache.set(cache_hash_key,
failures_cached - 1,
cache_timeout)
else:
trusted_record_exists = True
attempt.failures_since_start = 0
attempt.save()
cache.set(cache_hash_key, 0, cache_timeout)
if trusted_record_exists is False:
create_new_trusted_record(request)
if NEVER_LOCKOUT_WHITELIST and ip_in_whitelist(ip_address):
return True
user_lockable = is_user_lockable(request)
# no matter what, we want to lock them out if they're past the number of
# attempts allowed, unless the user is set to notlockable
if failures >= FAILURE_LIMIT and LOCK_OUT_AT_FAILURE and user_lockable:
# We log them out in case they actually managed to enter the correct
# password
if hasattr(request, 'user') and request.user.is_authenticated():
logout(request)
log.warn(
'AXES: locked out %s after repeated login attempts.' % ip_address
)
# send signal when someone is locked out.
user_locked_out.send(
'axes', request=request, username=username, ip_address=ip_address
)
# if a trusted login has violated lockout, revoke trust
for attempt in [a for a in attempts if a.trusted]:
attempt.delete()
create_new_failure_records(request, failures)
return False
return True
def user_login_failed(self, sender, credentials, request=None, **kwargs): # pylint: disable=too-many-locals
"""
When user login fails, save AccessAttempt record in database and lock user out if necessary.
:raises AxesSignalPermissionDenied: if user should be locked out.
"""
attempt_time = now()
# 1. database query: Clean up expired user attempts from the database before logging new attempts
clean_expired_user_attempts(attempt_time)
if request is None:
log.error(
'AXES: AxesDatabaseHandler.user_login_failed does not function without a request.'
)
return
username = get_client_username(request, credentials)
ip_address = get_client_ip_address(request)
user_agent = get_client_user_agent(request)
path_info = get_client_path_info(request)
http_accept = get_client_http_accept(request)
client_str = get_client_str(username, ip_address, user_agent,
path_info)
get_data = get_query_str(request.GET)
post_data = get_query_str(request.POST)
if self.is_whitelisted(request, credentials):
log.info('AXES: Login failed from whitelisted client %s.',
client_str)
return
# 2. database query: Calculate the current maximum failure number from the existing attempts
failures_since_start = 1 + self.get_failures(request, credentials,
attempt_time)
# 3. database query: Insert or update access records with the new failure data
if failures_since_start > 1:
# Update failed attempt information but do not touch the username, IP address, or user agent fields,
# because attackers can request the site with multiple different configurations
# in order to bypass the defense mechanisms that are used by the site.
log.warning(
'AXES: Repeated login failure by %s. Count = %d of %d. Updating existing record in the database.',
client_str,
failures_since_start,
settings.AXES_FAILURE_LIMIT,
)
separator = '\n---------\n'
attempts = get_user_attempts(request, credentials, attempt_time)
attempts.update(
get_data=Concat('get_data', Value(separator + get_data)),
post_data=Concat('post_data', Value(separator + post_data)),
http_accept=http_accept,
path_info=path_info,
failures_since_start=failures_since_start,
attempt_time=attempt_time,
)
else:
# Record failed attempt with all the relevant information.
# Filtering based on username, IP address and user agent handled elsewhere,
# and this handler just records the available information for further use.
log.warning(
'AXES: New login failure by %s. Creating new record in the database.',
client_str,
)
AccessAttempt.objects.create(
username=username,
ip_address=ip_address,
user_agent=user_agent,
get_data=get_data,
post_data=post_data,
http_accept=http_accept,
path_info=path_info,
failures_since_start=failures_since_start,
attempt_time=attempt_time,
)
if failures_since_start >= settings.AXES_FAILURE_LIMIT:
log.warning('AXES: Locking out %s after repeated login failures.',
client_str)
user_locked_out.send(
'axes',
request=request,
username=username,
ip_address=ip_address,
)
raise AxesSignalPermissionDenied(
'Locked out due to repeated login failures.')
def user_login_failed(self,
sender,
credentials: dict,
request=None,
**kwargs): # pylint: disable=too-many-locals
"""
When user login fails, save AccessAttempt record in database, mark request with lockout attribute and emit lockout signal.
"""
log.info(
"AXES: User login failed, running database handler for failure.")
if request is None:
log.error(
"AXES: AxesDatabaseHandler.user_login_failed does not function without a request."
)
return
# 1. database query: Clean up expired user attempts from the database before logging new attempts
clean_expired_user_attempts(request.axes_attempt_time)
username = get_client_username(request, credentials)
client_str = get_client_str(
username,
request.axes_ip_address,
request.axes_user_agent,
request.axes_path_info,
request,
)
# This replaces null byte chars that crash saving failures.
get_data = get_query_str(request.GET).replace("\0", "0x00")
post_data = get_query_str(request.POST).replace("\0", "0x00")
if self.is_whitelisted(request, credentials):
log.info("AXES: Login failed from whitelisted client %s.",
client_str)
return
# 2. database query: Get or create access record with the new failure data
if settings.AXES_ONLY_USER_FAILURES and username is None:
log.warning(
"AXES: Username is None and AXES_ONLY_USER_FAILURES is enabled, new record will NOT be created."
)
else:
with transaction.atomic():
(
attempt,
created,
) = AccessAttempt.objects.select_for_update().get_or_create(
username=username,
ip_address=request.axes_ip_address,
user_agent=request.axes_user_agent,
defaults={
"get_data": get_data,
"post_data": post_data,
"http_accept": request.axes_http_accept,
"path_info": request.axes_path_info,
"failures_since_start": 1,
"attempt_time": request.axes_attempt_time,
},
)
# Record failed attempt with all the relevant information.
# Filtering based on username, IP address and user agent handled elsewhere,
# and this handler just records the available information for further use.
if created:
log.warning(
"AXES: New login failure by %s. Created new record in the database.",
client_str,
)
# 3. database query if there were previous attempts in the database
# Update failed attempt information but do not touch the username, IP address, or user agent fields,
# because attackers can request the site with multiple different configurations
# in order to bypass the defense mechanisms that are used by the site.
else:
separator = "\n---------\n"
attempt.get_data = Concat("get_data",
Value(separator + get_data))
attempt.post_data = Concat("post_data",
Value(separator + post_data))
attempt.http_accept = request.axes_http_accept
attempt.path_info = request.axes_path_info
attempt.failures_since_start = F(
"failures_since_start") + 1
attempt.attempt_time = request.axes_attempt_time
attempt.save()
log.warning(
"AXES: Repeated login failure by %s. Updated existing record in the database.",
client_str,
)
# 3. or 4. database query: Calculate the current maximum failure number from the existing attempts
failures_since_start = self.get_failures(request, credentials)
request.axes_failures_since_start = failures_since_start
if (settings.AXES_LOCK_OUT_AT_FAILURE
and failures_since_start >= get_failure_limit(
request, credentials)):
log.warning("AXES: Locking out %s after repeated login failures.",
client_str)
request.axes_locked_out = True
user_locked_out.send(
"axes",
request=request,
username=username,
ip_address=request.axes_ip_address,
)
def user_login_failed(self, sender, credentials, request, **kwargs): # pylint: disable=unused-argument
"""
When user login fails, save AccessAttempt record in database and lock user out if necessary.
:raises AxesSignalPermissionDenied: if user should is locked out
"""
if request is None:
log.warning('AxesHandler.user_login_failed does not function without a request.')
return
ip_address = get_client_ip(request)
username = get_client_username(request, credentials)
user_agent = request.META.get('HTTP_USER_AGENT', '<unknown>')[:255]
path_info = request.META.get('PATH_INFO', '<unknown>')[:255]
http_accept = request.META.get('HTTP_ACCEPT', '<unknown>')[:1025]
if settings.AXES_NEVER_LOCKOUT_WHITELIST and ip_in_whitelist(ip_address):
log.info('Login failed from whitelisted IP %s.', ip_address)
return
failures = 0
attempts = get_user_attempts(request, credentials)
cache_hash_key = get_cache_key(request, credentials)
cache_timeout = get_cache_timeout()
failures_cached = get_axes_cache().get(cache_hash_key)
if failures_cached is not None:
failures = failures_cached
else:
for attempt in attempts:
failures = max(failures, attempt.failures_since_start)
# add a failed attempt for this user
failures += 1
get_axes_cache().set(cache_hash_key, failures, cache_timeout)
# has already attempted, update the info
if attempts:
for attempt in attempts:
attempt.get_data = '%s\n---------\n%s' % (
attempt.get_data,
query2str(request.GET),
)
attempt.post_data = '%s\n---------\n%s' % (
attempt.post_data,
query2str(request.POST)
)
attempt.http_accept = http_accept
attempt.path_info = path_info
attempt.failures_since_start = failures
attempt.attempt_time = now()
attempt.save()
log.info(
'AXES: Repeated login failure by %s. Count = %d of %d',
get_client_str(username, ip_address, user_agent, path_info),
failures,
settings.AXES_FAILURE_LIMIT,
)
else:
# Record failed attempt. Whether or not the IP address or user agent is
# used in counting failures is handled elsewhere, so we just record
# everything here.
AccessAttempt.objects.create(
user_agent=user_agent,
ip_address=ip_address,
username=username,
get_data=query2str(request.GET),
post_data=query2str(request.POST),
http_accept=http_accept,
path_info=path_info,
failures_since_start=failures,
)
log.info(
'AXES: New login failure by %s. Creating access record.',
get_client_str(username, ip_address, user_agent, path_info),
)
# no matter what, we want to lock them out if they're past the number of
# attempts allowed, unless the user is set to notlockable
if (
failures >= settings.AXES_FAILURE_LIMIT and
settings.AXES_LOCK_OUT_AT_FAILURE and
is_user_lockable(request, credentials)
):
log.warning(
'AXES: Locked out %s after repeated login failures.',
get_client_str(username, ip_address, user_agent, path_info),
)
# send signal when someone is locked out.
user_locked_out.send(
'axes',
request=request,
username=username,
ip_address=ip_address,
)
raise AxesSignalPermissionDenied('Locked out due to repeated login failures.')
def check_request(request, login_unsuccessful):
ip_address = get_ip(request)
username = request.POST.get(USERNAME_FORM_FIELD, None)
user_agent = request.META.get('HTTP_USER_AGENT', '<unknown>')[:255]
path_info = request.META.get('PATH_INFO', '<unknown>')[:255]
failures = 0
attempts = get_user_attempts(request)
cache_hash_key = get_cache_key(request)
cache_timeout = get_cache_timeout()
failures_cached = cache.get(cache_hash_key)
if failures_cached is not None:
failures = failures_cached
else:
for attempt in attempts:
failures = max(failures, attempt.failures_since_start)
if login_unsuccessful:
# add a failed attempt for this user
failures += 1
cache.set(cache_hash_key, failures, cache_timeout)
# Create an AccessAttempt record if the login wasn't successful
# has already attempted, update the info
if len(attempts):
for attempt in attempts:
attempt.get_data = '%s\n---------\n%s' % (
attempt.get_data,
query2str(request.GET),
)
attempt.post_data = '%s\n---------\n%s' % (
attempt.post_data,
query2str(request.POST)
)
attempt.http_accept = \
request.META.get('HTTP_ACCEPT', '<unknown>')[:1025]
attempt.path_info = path_info,path_info
attempt.failures_since_start = failures
attempt.attempt_time = datetime.now()
attempt.save()
log_repeated_attempt(username, ip_address,
user_agent, path_info, failures)
else:
create_new_failure_records(request, failures)
else:
# user logged in -- forget the failed attempts
failures = 0
trusted_record_exists = False
for attempt in attempts:
if not attempt.trusted:
attempt.delete()
failures_cached = cache.get(cache_hash_key)
if failures_cached is not None:
cache.set(cache_hash_key,
failures_cached - 1,
cache_timeout)
else:
trusted_record_exists = True
attempt.failures_since_start = 0
attempt.save()
cache.set(cache_hash_key, 0, cache_timeout)
if trusted_record_exists is False:
create_new_trusted_record(request)
if NEVER_LOCKOUT_WHITELIST and ip_in_whitelist(ip_address):
return True
user_lockable = is_user_lockable(request)
# no matter what, we want to lock them out if they're past the number of
# attempts allowed, unless the user is set to notlockable
if failures >= FAILURE_LIMIT and LOCK_OUT_AT_FAILURE and user_lockable:
# We log them out in case they actually managed to enter the correct
# password
if hasattr(request, 'user') and request.user.is_authenticated():
logout(request)
username = request.POST.get(USERNAME_FORM_FIELD, None)
log_lockout(username, ip_address, user_agent, path_info)
# send signal when someone is locked out.
user_locked_out.send(
'axes', request=request, username=username, ip_address=ip_address
)
# if a trusted login has violated lockout, revoke trust
for attempt in [a for a in attempts if a.trusted]:
attempt.delete()
create_new_failure_records(request, failures)
return False
return True
def user_login_failed(
self,
sender,
credentials: dict,
request: AxesHttpRequest = None,
**kwargs
): # pylint: disable=too-many-locals
"""
When user login fails, save AccessAttempt record in database and lock user out if necessary.
:raises AxesSignalPermissionDenied: if user should be locked out.
"""
if request is None:
log.error('AXES: AxesDatabaseHandler.user_login_failed does not function without a request.')
return
if not hasattr(request, 'axes_attempt_time'):
log.error('AXES: AxesDatabaseHandler.user_login_failed needs a valid AxesHttpRequest object.')
return
# 1. database query: Clean up expired user attempts from the database before logging new attempts
clean_expired_user_attempts(request.axes_attempt_time)
username = get_client_username(request, credentials)
client_str = get_client_str(username, request.axes_ip_address, request.axes_user_agent, request.axes_path_info)
get_data = get_query_str(request.GET)
post_data = get_query_str(request.POST)
if self.is_whitelisted(request, credentials):
log.info('AXES: Login failed from whitelisted client %s.', client_str)
return
# 2. database query: Calculate the current maximum failure number from the existing attempts
failures_since_start = 1 + self.get_failures(request, credentials)
# 3. database query: Insert or update access records with the new failure data
if failures_since_start > 1:
# Update failed attempt information but do not touch the username, IP address, or user agent fields,
# because attackers can request the site with multiple different configurations
# in order to bypass the defense mechanisms that are used by the site.
log.warning(
'AXES: Repeated login failure by %s. Count = %d of %d. Updating existing record in the database.',
client_str,
failures_since_start,
settings.AXES_FAILURE_LIMIT,
)
separator = '\n---------\n'
attempts = get_user_attempts(request, credentials)
attempts.update(
get_data=Concat('get_data', Value(separator + get_data)),
post_data=Concat('post_data', Value(separator + post_data)),
http_accept=request.axes_http_accept,
path_info=request.axes_path_info,
failures_since_start=failures_since_start,
attempt_time=request.axes_attempt_time,
)
else:
# Record failed attempt with all the relevant information.
# Filtering based on username, IP address and user agent handled elsewhere,
# and this handler just records the available information for further use.
log.warning(
'AXES: New login failure by %s. Creating new record in the database.',
client_str,
)
AccessAttempt.objects.create(
username=username,
ip_address=request.axes_ip_address,
user_agent=request.axes_user_agent,
get_data=get_data,
post_data=post_data,
http_accept=request.axes_http_accept,
path_info=request.axes_path_info,
failures_since_start=failures_since_start,
attempt_time=request.axes_attempt_time,
)
if failures_since_start >= settings.AXES_FAILURE_LIMIT:
log.warning('AXES: Locking out %s after repeated login failures.', client_str)
user_locked_out.send(
'axes',
request=request,
username=username,
ip_address=request.axes_ip_address,
)
raise AxesSignalPermissionDenied('Locked out due to repeated login failures.')
