move actual proxying logic to separate class
This commit is contained in:
Jens Langhammer
parent
940b3eb943
commit
9b5b03647b
|
|
@ -1,241 +1,33 @@
|
|||
"""passbook app_gw middleware"""
|
||||
import mimetypes
|
||||
from logging import getLogger
|
||||
from random import SystemRandom
|
||||
from urllib.parse import urlparse
|
||||
|
||||
import certifi
|
||||
import urllib3
|
||||
from django.core.cache import cache
|
||||
from django.utils.http import urlencode
|
||||
from django.views.generic import RedirectView
|
||||
from revproxy.exceptions import InvalidUpstream
|
||||
|
||||
from passbook.app_gw.models import ApplicationGatewayProvider
|
||||
from passbook.app_gw.proxy.response import get_django_response
|
||||
from passbook.app_gw.proxy.utils import encode_items, normalize_request_headers
|
||||
from passbook.app_gw.rewrite import Rewriter
|
||||
from passbook.core.models import Application
|
||||
from passbook.core.policies import PolicyEngine
|
||||
from passbook.app_gw.proxy.handler import RequestHandler
|
||||
from passbook.lib.config import CONFIG
|
||||
|
||||
SESSION_UPSTREAM_KEY = 'passbook_app_gw_upstream'
|
||||
IGNORED_HOSTNAMES_KEY = 'passbook_app_gw_ignored'
|
||||
LOGGER = getLogger(__name__)
|
||||
QUOTE_SAFE = r'<.;>\(}*+|~=-$/_:^@)[{]&\'!,"`'
|
||||
ERRORS_MESSAGES = {
|
||||
'upstream-no-scheme': ("Upstream URL scheme must be either "
|
||||
"'http' or 'https' (%s).")
|
||||
}
|
||||
HTTP_NO_VERIFY = urllib3.PoolManager()
|
||||
HTTP = urllib3.PoolManager(
|
||||
cert_reqs='CERT_REQUIRED',
|
||||
ca_certs=certifi.where())
|
||||
|
||||
|
||||
# pylint: disable=too-many-instance-attributes
|
||||
class ApplicationGatewayMiddleware:
|
||||
"""Check if request should be proxied or handeled normally"""
|
||||
|
||||
ignored_hosts = []
|
||||
request = None
|
||||
app_gw = None
|
||||
http = None
|
||||
http_no_verify = None
|
||||
host_header = ''
|
||||
|
||||
_parsed_url = None
|
||||
_request_headers = None
|
||||
_app_gw_cache = {}
|
||||
|
||||
def __init__(self, get_response):
|
||||
self.get_response = get_response
|
||||
self.ignored_hosts = cache.get(IGNORED_HOSTNAMES_KEY, [])
|
||||
|
||||
def precheck(self, request):
|
||||
"""Check if a request should be proxied or forwarded to passbook"""
|
||||
# Check if hostname is in cached list of ignored hostnames
|
||||
# This saves us having to query the database on each request
|
||||
self.host_header = request.META.get('HTTP_HOST')
|
||||
if self.host_header in self.ignored_hosts:
|
||||
LOGGER.debug("%s is ignored", self.host_header)
|
||||
return True, None
|
||||
# Look through all ApplicationGatewayProviders and check hostnames
|
||||
matches = ApplicationGatewayProvider.objects.filter(
|
||||
server_name__contains=[self.host_header],
|
||||
enabled=True)
|
||||
if not matches.exists():
|
||||
# Mo matching Providers found, add host header to ignored list
|
||||
self.ignored_hosts.append(self.host_header)
|
||||
cache.set(IGNORED_HOSTNAMES_KEY, self.ignored_hosts)
|
||||
LOGGER.debug("Ignoring %s", self.host_header)
|
||||
return True, None
|
||||
# At this point we're certain there's a matching ApplicationGateway
|
||||
if len(matches) > 1:
|
||||
# This should never happen
|
||||
raise ValueError
|
||||
app_gw = matches.first()
|
||||
try:
|
||||
# Check if ApplicationGateway is associated with application
|
||||
getattr(app_gw, 'application')
|
||||
if app_gw:
|
||||
return False, app_gw
|
||||
except Application.DoesNotExist:
|
||||
LOGGER.debug("ApplicationGateway not associated with Application")
|
||||
return True, None
|
||||
|
||||
def __call__(self, request):
|
||||
forward, self.app_gw = self.precheck(request)
|
||||
if forward:
|
||||
return self.get_response(request)
|
||||
self.request = request
|
||||
return self.dispatch(request)
|
||||
# Rudimentary cache
|
||||
host_header = request.META.get('HTTP_HOST')
|
||||
if host_header not in self._app_gw_cache:
|
||||
self._app_gw_cache[host_header] = RequestHandler.find_app_gw_for_request(request)
|
||||
if self._app_gw_cache[host_header]:
|
||||
return self.dispatch(request, self._app_gw_cache[host_header])
|
||||
return self.get_response(request)
|
||||
|
||||
def _get_upstream(self):
|
||||
"""Choose random upstream and save in session"""
|
||||
if SESSION_UPSTREAM_KEY not in self.request.session:
|
||||
self.request.session[SESSION_UPSTREAM_KEY] = {}
|
||||
if self.app_gw.pk not in self.request.session[SESSION_UPSTREAM_KEY]:
|
||||
upstream_index = SystemRandom().randrange(len(self.app_gw.upstream))
|
||||
self.request.session[SESSION_UPSTREAM_KEY][self.app_gw.pk] = upstream_index
|
||||
return self.app_gw.upstream[self.request.session[SESSION_UPSTREAM_KEY][self.app_gw.pk]]
|
||||
|
||||
def get_upstream(self):
|
||||
"""Get upstream as parsed url"""
|
||||
upstream = self._get_upstream()
|
||||
|
||||
self._parsed_url = urlparse(upstream)
|
||||
|
||||
if self._parsed_url.scheme not in ('http', 'https'):
|
||||
raise InvalidUpstream(ERRORS_MESSAGES['upstream-no-scheme'] %
|
||||
upstream)
|
||||
|
||||
return upstream
|
||||
|
||||
def _format_path_to_redirect(self, request):
|
||||
LOGGER.debug("Path before: %s", request.get_full_path())
|
||||
rewriter = Rewriter(self.app_gw, request)
|
||||
after = rewriter.build()
|
||||
LOGGER.debug("Path after: %s", after)
|
||||
return after
|
||||
|
||||
def get_proxy_request_headers(self, request):
|
||||
"""Get normalized headers for the upstream
|
||||
Gets all headers from the original request and normalizes them.
|
||||
Normalization occurs by removing the prefix ``HTTP_`` and
|
||||
replacing and ``_`` by ``-``. Example: ``HTTP_ACCEPT_ENCODING``
|
||||
becames ``Accept-Encoding``.
|
||||
.. versionadded:: 0.9.1
|
||||
:param request: The original HTTPRequest instance
|
||||
:returns: Normalized headers for the upstream
|
||||
"""
|
||||
return normalize_request_headers(request)
|
||||
|
||||
def get_request_headers(self):
|
||||
"""Return request headers that will be sent to upstream.
|
||||
The header REMOTE_USER is set to the current user
|
||||
if AuthenticationMiddleware is enabled and
|
||||
the view's add_remote_user property is True.
|
||||
.. versionadded:: 0.9.8
|
||||
"""
|
||||
request_headers = self.get_proxy_request_headers(self.request)
|
||||
if not self.app_gw.authentication_header:
|
||||
return request_headers
|
||||
request_headers[self.app_gw.authentication_header] = self.request.user.get_username()
|
||||
LOGGER.info("%s set", self.app_gw.authentication_header)
|
||||
|
||||
return request_headers
|
||||
|
||||
def check_permission(self):
|
||||
"""Check if user is authenticated and has permission to access app"""
|
||||
if not hasattr(self.request, 'user'):
|
||||
return False
|
||||
if not self.request.user.is_authenticated:
|
||||
return False
|
||||
policy_engine = PolicyEngine(self.app_gw.application.policies.all())
|
||||
policy_engine.for_user(self.request.user).with_request(self.request).build()
|
||||
passing, _messages = policy_engine.result
|
||||
|
||||
return passing
|
||||
|
||||
def get_encoded_query_params(self):
|
||||
"""Return encoded query params to be used in proxied request"""
|
||||
get_data = encode_items(self.request.GET.lists())
|
||||
return urlencode(get_data)
|
||||
|
||||
def _created_proxy_response(self, request, path):
|
||||
request_payload = request.body
|
||||
|
||||
LOGGER.debug("Request headers: %s", self._request_headers)
|
||||
|
||||
request_url = self.get_upstream() + path
|
||||
LOGGER.debug("Request URL: %s", request_url)
|
||||
|
||||
if request.GET:
|
||||
request_url += '?' + self.get_encoded_query_params()
|
||||
LOGGER.debug("Request URL: %s", request_url)
|
||||
|
||||
http = HTTP
|
||||
if not self.app_gw.upstream_ssl_verification:
|
||||
http = HTTP_NO_VERIFY
|
||||
|
||||
try:
|
||||
proxy_response = http.urlopen(request.method,
|
||||
request_url,
|
||||
redirect=False,
|
||||
retries=None,
|
||||
headers=self._request_headers,
|
||||
body=request_payload,
|
||||
decode_content=False,
|
||||
preload_content=False)
|
||||
LOGGER.debug("Proxy response header: %s",
|
||||
proxy_response.getheaders())
|
||||
except urllib3.exceptions.HTTPError as error:
|
||||
LOGGER.exception(error)
|
||||
raise
|
||||
|
||||
return proxy_response
|
||||
|
||||
def _replace_host_on_redirect_location(self, request, proxy_response):
|
||||
location = proxy_response.headers.get('Location')
|
||||
if location:
|
||||
if request.is_secure():
|
||||
scheme = 'https://'
|
||||
else:
|
||||
scheme = 'http://'
|
||||
request_host = scheme + self.host_header
|
||||
|
||||
upstream_host_http = 'http://' + self._parsed_url.netloc
|
||||
upstream_host_https = 'https://' + self._parsed_url.netloc
|
||||
|
||||
location = location.replace(upstream_host_http, request_host)
|
||||
location = location.replace(upstream_host_https, request_host)
|
||||
proxy_response.headers['Location'] = location
|
||||
LOGGER.debug("Proxy response LOCATION: %s",
|
||||
proxy_response.headers['Location'])
|
||||
|
||||
def _set_content_type(self, request, proxy_response):
|
||||
content_type = proxy_response.headers.get('Content-Type')
|
||||
if not content_type:
|
||||
content_type = (mimetypes.guess_type(request.path)[0] or
|
||||
self.app_gw.default_content_type)
|
||||
proxy_response.headers['Content-Type'] = content_type
|
||||
LOGGER.debug("Proxy response CONTENT-TYPE: %s",
|
||||
proxy_response.headers['Content-Type'])
|
||||
|
||||
def dispatch(self, request):
|
||||
def dispatch(self, request, app_gw):
|
||||
"""Build proxied request and pass to upstream"""
|
||||
if not self.check_permission():
|
||||
handler = RequestHandler(app_gw, request)
|
||||
|
||||
if not handler.check_permission():
|
||||
to_url = 'https://%s/?next=%s' % (CONFIG.get('domains')[0], request.get_full_path())
|
||||
return RedirectView.as_view(url=to_url)(request)
|
||||
|
||||
self._request_headers = self.get_request_headers()
|
||||
|
||||
path = self._format_path_to_redirect(request)
|
||||
proxy_response = self._created_proxy_response(request, path)
|
||||
|
||||
self._replace_host_on_redirect_location(request, proxy_response)
|
||||
self._set_content_type(request, proxy_response)
|
||||
response = get_django_response(proxy_response, strict_cookies=False)
|
||||
|
||||
LOGGER.debug("RESPONSE RETURNED: %s", response)
|
||||
return response
|
||||
return handler.get_response()
|
||||
|
|
|
|||
|
|
@ -0,0 +1,222 @@
|
|||
"""passbook app_gw request handler"""
|
||||
import mimetypes
|
||||
from logging import getLogger
|
||||
from random import SystemRandom
|
||||
from urllib.parse import urlparse
|
||||
|
||||
import certifi
|
||||
import urllib3
|
||||
from django.core.cache import cache
|
||||
from django.utils.http import urlencode
|
||||
|
||||
from passbook.app_gw.models import ApplicationGatewayProvider
|
||||
from passbook.app_gw.proxy.exceptions import InvalidUpstream
|
||||
from passbook.app_gw.proxy.response import get_django_response
|
||||
from passbook.app_gw.proxy.utils import encode_items, normalize_request_headers
|
||||
from passbook.app_gw.rewrite import Rewriter
|
||||
from passbook.core.models import Application
|
||||
from passbook.core.policies import PolicyEngine
|
||||
|
||||
SESSION_UPSTREAM_KEY = 'passbook_app_gw_upstream'
|
||||
IGNORED_HOSTNAMES_KEY = 'passbook_app_gw_ignored'
|
||||
LOGGER = getLogger(__name__)
|
||||
QUOTE_SAFE = r'<.;>\(}*+|~=-$/_:^@)[{]&\'!,"`'
|
||||
ERRORS_MESSAGES = {
|
||||
'upstream-no-scheme': ("Upstream URL scheme must be either "
|
||||
"'http' or 'https' (%s).")
|
||||
}
|
||||
HTTP_NO_VERIFY = urllib3.PoolManager()
|
||||
HTTP = urllib3.PoolManager(
|
||||
cert_reqs='CERT_REQUIRED',
|
||||
ca_certs=certifi.where())
|
||||
IGNORED_HOSTS = cache.get(IGNORED_HOSTNAMES_KEY, [])
|
||||
|
||||
|
||||
class RequestHandler:
|
||||
"""Forward requests"""
|
||||
|
||||
_parsed_url = None
|
||||
_request_headers = None
|
||||
|
||||
def __init__(self, app_gw, request):
|
||||
self.app_gw = app_gw
|
||||
self.request = request
|
||||
|
||||
@staticmethod
|
||||
def find_app_gw_for_request(request):
|
||||
"""Check if a request should be proxied or forwarded to passbook"""
|
||||
# Check if hostname is in cached list of ignored hostnames
|
||||
# This saves us having to query the database on each request
|
||||
host_header = request.META.get('HTTP_HOST')
|
||||
if host_header in IGNORED_HOSTS:
|
||||
LOGGER.debug("%s is ignored", host_header)
|
||||
return False
|
||||
# Look through all ApplicationGatewayProviders and check hostnames
|
||||
matches = ApplicationGatewayProvider.objects.filter(
|
||||
server_name__contains=[host_header],
|
||||
enabled=True)
|
||||
if not matches.exists():
|
||||
# Mo matching Providers found, add host header to ignored list
|
||||
IGNORED_HOSTS.append(host_header)
|
||||
cache.set(IGNORED_HOSTNAMES_KEY, IGNORED_HOSTS)
|
||||
LOGGER.debug("Ignoring %s", host_header)
|
||||
return False
|
||||
# At this point we're certain there's a matching ApplicationGateway
|
||||
if len(matches) > 1:
|
||||
# This should never happen
|
||||
raise ValueError
|
||||
app_gw = matches.first()
|
||||
try:
|
||||
# Check if ApplicationGateway is associated with application
|
||||
getattr(app_gw, 'application')
|
||||
if app_gw:
|
||||
return app_gw
|
||||
except Application.DoesNotExist:
|
||||
LOGGER.debug("ApplicationGateway not associated with Application")
|
||||
return True
|
||||
|
||||
def _get_upstream(self):
|
||||
"""Choose random upstream and save in session"""
|
||||
if SESSION_UPSTREAM_KEY not in self.request.session:
|
||||
self.request.session[SESSION_UPSTREAM_KEY] = {}
|
||||
if self.app_gw.pk not in self.request.session[SESSION_UPSTREAM_KEY]:
|
||||
upstream_index = int(SystemRandom().random() * len(self.app_gw.upstream))
|
||||
self.request.session[SESSION_UPSTREAM_KEY][self.app_gw.pk] = upstream_index
|
||||
return self.app_gw.upstream[self.request.session[SESSION_UPSTREAM_KEY][self.app_gw.pk]]
|
||||
|
||||
def get_upstream(self):
|
||||
"""Get upstream as parsed url"""
|
||||
upstream = self._get_upstream()
|
||||
|
||||
self._parsed_url = urlparse(upstream)
|
||||
|
||||
if self._parsed_url.scheme not in ('http', 'https'):
|
||||
raise InvalidUpstream(ERRORS_MESSAGES['upstream-no-scheme'] %
|
||||
upstream)
|
||||
|
||||
return upstream
|
||||
|
||||
def _format_path_to_redirect(self):
|
||||
LOGGER.debug("Path before: %s", self.request.get_full_path())
|
||||
rewriter = Rewriter(self.app_gw, self.request)
|
||||
after = rewriter.build()
|
||||
LOGGER.debug("Path after: %s", after)
|
||||
return after
|
||||
|
||||
def get_proxy_request_headers(self):
|
||||
"""Get normalized headers for the upstream
|
||||
Gets all headers from the original request and normalizes them.
|
||||
Normalization occurs by removing the prefix ``HTTP_`` and
|
||||
replacing and ``_`` by ``-``. Example: ``HTTP_ACCEPT_ENCODING``
|
||||
becames ``Accept-Encoding``.
|
||||
.. versionadded:: 0.9.1
|
||||
:param request: The original HTTPRequest instance
|
||||
:returns: Normalized headers for the upstream
|
||||
"""
|
||||
return normalize_request_headers(self.request)
|
||||
|
||||
def get_request_headers(self):
|
||||
"""Return request headers that will be sent to upstream.
|
||||
The header REMOTE_USER is set to the current user
|
||||
if AuthenticationMiddleware is enabled and
|
||||
the view's add_remote_user property is True.
|
||||
.. versionadded:: 0.9.8
|
||||
"""
|
||||
request_headers = self.get_proxy_request_headers()
|
||||
if not self.app_gw.authentication_header:
|
||||
return request_headers
|
||||
request_headers[self.app_gw.authentication_header] = self.request.user.get_username()
|
||||
LOGGER.info("%s set", self.app_gw.authentication_header)
|
||||
|
||||
return request_headers
|
||||
|
||||
def check_permission(self):
|
||||
"""Check if user is authenticated and has permission to access app"""
|
||||
if not hasattr(self.request, 'user'):
|
||||
return False
|
||||
if not self.request.user.is_authenticated:
|
||||
return False
|
||||
policy_engine = PolicyEngine(self.app_gw.application.policies.all())
|
||||
policy_engine.for_user(self.request.user).with_request(self.request).build()
|
||||
passing, _messages = policy_engine.result
|
||||
|
||||
return passing
|
||||
|
||||
def get_encoded_query_params(self):
|
||||
"""Return encoded query params to be used in proxied request"""
|
||||
get_data = encode_items(self.request.GET.lists())
|
||||
return urlencode(get_data)
|
||||
|
||||
def _created_proxy_response(self, path):
|
||||
request_payload = self.request.body
|
||||
|
||||
LOGGER.debug("Request headers: %s", self._request_headers)
|
||||
|
||||
request_url = self.get_upstream() + path
|
||||
LOGGER.debug("Request URL: %s", request_url)
|
||||
|
||||
if self.request.GET:
|
||||
request_url += '?' + self.get_encoded_query_params()
|
||||
LOGGER.debug("Request URL: %s", request_url)
|
||||
|
||||
http = HTTP
|
||||
if not self.app_gw.upstream_ssl_verification:
|
||||
http = HTTP_NO_VERIFY
|
||||
|
||||
try:
|
||||
proxy_response = http.urlopen(self.request.method,
|
||||
request_url,
|
||||
redirect=False,
|
||||
retries=None,
|
||||
headers=self._request_headers,
|
||||
body=request_payload,
|
||||
decode_content=False,
|
||||
preload_content=False)
|
||||
LOGGER.debug("Proxy response header: %s",
|
||||
proxy_response.getheaders())
|
||||
except urllib3.exceptions.HTTPError as error:
|
||||
LOGGER.exception(error)
|
||||
raise
|
||||
|
||||
return proxy_response
|
||||
|
||||
def _replace_host_on_redirect_location(self, proxy_response):
|
||||
location = proxy_response.headers.get('Location')
|
||||
if location:
|
||||
if self.request.is_secure():
|
||||
scheme = 'https://'
|
||||
else:
|
||||
scheme = 'http://'
|
||||
request_host = scheme + self.request.META.get('HTTP_HOST')
|
||||
|
||||
upstream_host_http = 'http://' + self._parsed_url.netloc
|
||||
upstream_host_https = 'https://' + self._parsed_url.netloc
|
||||
|
||||
location = location.replace(upstream_host_http, request_host)
|
||||
location = location.replace(upstream_host_https, request_host)
|
||||
proxy_response.headers['Location'] = location
|
||||
LOGGER.debug("Proxy response LOCATION: %s",
|
||||
proxy_response.headers['Location'])
|
||||
|
||||
def _set_content_type(self, proxy_response):
|
||||
content_type = proxy_response.headers.get('Content-Type')
|
||||
if not content_type:
|
||||
content_type = (mimetypes.guess_type(self.request.path)[0] or
|
||||
self.app_gw.default_content_type)
|
||||
proxy_response.headers['Content-Type'] = content_type
|
||||
LOGGER.debug("Proxy response CONTENT-TYPE: %s",
|
||||
proxy_response.headers['Content-Type'])
|
||||
|
||||
def get_response(self):
|
||||
"""Pass request to upstream and return response"""
|
||||
self._request_headers = self.get_request_headers()
|
||||
|
||||
path = self._format_path_to_redirect()
|
||||
proxy_response = self._created_proxy_response(path)
|
||||
|
||||
self._replace_host_on_redirect_location(proxy_response)
|
||||
self._set_content_type(proxy_response)
|
||||
response = get_django_response(proxy_response, strict_cookies=False)
|
||||
|
||||
LOGGER.debug("RESPONSE RETURNED: %s", response)
|
||||
return response
|
||||
|
|
@ -6,8 +6,8 @@ from django.core.cache import cache
|
|||
from django.db.models.signals import post_save
|
||||
from django.dispatch import receiver
|
||||
|
||||
from passbook.app_gw.middleware import IGNORED_HOSTNAMES_KEY
|
||||
from passbook.app_gw.models import ApplicationGatewayProvider
|
||||
from passbook.app_gw.proxy.handler import IGNORED_HOSTNAMES_KEY
|
||||
|
||||
LOGGER = getLogger(__name__)
|
||||
|
||||
|
|
|
|||
|
|
@ -1,4 +1,5 @@
|
|||
"""passbook core policy engine"""
|
||||
import cProfile
|
||||
from logging import getLogger
|
||||
|
||||
from amqp.exceptions import UnexpectedFrame
|
||||
|
|
@ -10,6 +11,18 @@ from ipware import get_client_ip
|
|||
from passbook.core.celery import CELERY_APP
|
||||
from passbook.core.models import Policy, User
|
||||
|
||||
|
||||
def profileit(func):
|
||||
def wrapper(*args, **kwargs):
|
||||
datafn = func.__name__ + ".profile" # Name the data file sensibly
|
||||
prof = cProfile.Profile()
|
||||
retval = prof.runcall(func, *args, **kwargs)
|
||||
prof.dump_stats(datafn)
|
||||
return retval
|
||||
|
||||
return wrapper
|
||||
|
||||
|
||||
LOGGER = getLogger(__name__)
|
||||
|
||||
def _cache_key(policy, user):
|
||||
|
|
@ -66,6 +79,7 @@ class PolicyEngine:
|
|||
self.__request = request
|
||||
return self
|
||||
|
||||
@profileit
|
||||
def build(self):
|
||||
"""Build task group"""
|
||||
if not self.__user:
|
||||
|
|
@ -82,16 +96,16 @@ class PolicyEngine:
|
|||
for policy in self.policies:
|
||||
cached_policy = cache.get(_cache_key(policy, self.__user), None)
|
||||
if cached_policy:
|
||||
LOGGER.debug("Taking result from cache for %s", policy.pk.hex)
|
||||
LOGGER.warning("Taking result from cache for %s", policy.pk.hex)
|
||||
cached_policies.append(cached_policy)
|
||||
else:
|
||||
LOGGER.debug("Evaluating policy %s", policy.pk.hex)
|
||||
LOGGER.warning("Evaluating policy %s", policy.pk.hex)
|
||||
signatures.append(_policy_engine_task.signature(
|
||||
args=(self.__user.pk, policy.pk.hex),
|
||||
kwargs=kwargs,
|
||||
time_limit=policy.timeout))
|
||||
self.__get_timeout += policy.timeout
|
||||
LOGGER.debug("Set total policy timeout to %r", self.__get_timeout)
|
||||
LOGGER.warning("Set total policy timeout to %r", self.__get_timeout)
|
||||
# If all policies are cached, we have an empty list here.
|
||||
if signatures:
|
||||
self.__group = group(signatures)()
|
||||
|
|
|
|||
Reference in New Issue