auth-token: expose fetched token in unified way into request attribute.

- This will allow re-using exposed access token for HTTP views in single place
- We will support also exposing tokens from url if special _auth_token will be used as url param
- We'll no longer require double logic for extraction of URL/HEADER auth-tokens and have a single place to extract it.

rhodecode/lib/base.py

@@ -1,592 +1,597 b''
 # -*- coding: utf-8 -*-
 
 # Copyright (C) 2010-2019 RhodeCode GmbH
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License, version 3
 # (only), as published by the Free Software Foundation.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 # This program is dual-licensed. If you wish to learn more about the
 # RhodeCode Enterprise Edition, including its added features, Support services,
 # and proprietary license terms, please see https://rhodecode.com/licenses/
 
 """
 The base Controller API
 Provides the BaseController class for subclassing. And usage in different
 controllers
 """
 
 import logging
 import socket
 
 import markupsafe
 import ipaddress
 
 from paste.auth.basic import AuthBasicAuthenticator
 from paste.httpexceptions import HTTPUnauthorized, HTTPForbidden, get_exception
 from paste.httpheaders import WWW_AUTHENTICATE, AUTHORIZATION
 
 import rhodecode
 from rhodecode.apps._base import TemplateArgs
 from rhodecode.authentication.base import VCS_TYPE
 from rhodecode.lib import auth, utils2
 from rhodecode.lib import helpers as h
 from rhodecode.lib.auth import AuthUser, CookieStoreWrapper
 from rhodecode.lib.exceptions import UserCreationError
 from rhodecode.lib.utils import (password_changed, get_enabled_hook_classes)
 from rhodecode.lib.utils2 import (
     str2bool, safe_unicode, AttributeDict, safe_int, sha1, aslist, safe_str)
 from rhodecode.model.db import Repository, User, ChangesetComment, UserBookmark
 from rhodecode.model.notification import NotificationModel
 from rhodecode.model.settings import VcsSettingsModel, SettingsModel
 
 log = logging.getLogger(__name__)
 
 
 def _filter_proxy(ip):
     """
     Passed in IP addresses in HEADERS can be in a special format of multiple
     ips. Those comma separated IPs are passed from various proxies in the
     chain of request processing. The left-most being the original client.
     We only care about the first IP which came from the org. client.
 
     :param ip: ip string from headers
     """
     if ',' in ip:
         _ips = ip.split(',')
         _first_ip = _ips[0].strip()
         log.debug('Got multiple IPs %s, using %s', ','.join(_ips), _first_ip)
         return _first_ip
     return ip
 
 
 def _filter_port(ip):
     """
     Removes a port from ip, there are 4 main cases to handle here.
     - ipv4 eg. 127.0.0.1
     - ipv6 eg. ::1
     - ipv4+port eg. 127.0.0.1:8080
     - ipv6+port eg. [::1]:8080
 
     :param ip:
     """
     def is_ipv6(ip_addr):
         if hasattr(socket, 'inet_pton'):
             try:
                 socket.inet_pton(socket.AF_INET6, ip_addr)
             except socket.error:
                 return False
         else:
             # fallback to ipaddress
             try:
                 ipaddress.IPv6Address(safe_unicode(ip_addr))
             except Exception:
                 return False
         return True
 
     if ':' not in ip:  # must be ipv4 pure ip
         return ip
 
     if '[' in ip and ']' in ip:  # ipv6 with port
         return ip.split(']')[0][1:].lower()
 
     # must be ipv6 or ipv4 with port
     if is_ipv6(ip):
         return ip
     else:
         ip, _port = ip.split(':')[:2]  # means ipv4+port
         return ip
 
 
 def get_ip_addr(environ):
     proxy_key = 'HTTP_X_REAL_IP'
     proxy_key2 = 'HTTP_X_FORWARDED_FOR'
     def_key = 'REMOTE_ADDR'
     _filters = lambda x: _filter_port(_filter_proxy(x))
 
     ip = environ.get(proxy_key)
     if ip:
         return _filters(ip)
 
     ip = environ.get(proxy_key2)
     if ip:
         return _filters(ip)
 
     ip = environ.get(def_key, '0.0.0.0')
     return _filters(ip)
 
 
 def get_server_ip_addr(environ, log_errors=True):
     hostname = environ.get('SERVER_NAME')
     try:
         return socket.gethostbyname(hostname)
     except Exception as e:
         if log_errors:
             # in some cases this lookup is not possible, and we don't want to
             # make it an exception in logs
             log.exception('Could not retrieve server ip address: %s', e)
         return hostname
 
 
 def get_server_port(environ):
     return environ.get('SERVER_PORT')
 
 
 def get_access_path(environ):
     path = environ.get('PATH_INFO')
     org_req = environ.get('pylons.original_request')
     if org_req:
         path = org_req.environ.get('PATH_INFO')
     return path
 
 
 def get_user_agent(environ):
     return environ.get('HTTP_USER_AGENT')
 
 
 def vcs_operation_context(
         environ, repo_name, username, action, scm, check_locking=True,
         is_shadow_repo=False, check_branch_perms=False, detect_force_push=False):
     """
     Generate the context for a vcs operation, e.g. push or pull.
 
     This context is passed over the layers so that hooks triggered by the
     vcs operation know details like the user, the user's IP address etc.
 
     :param check_locking: Allows to switch of the computation of the locking
         data. This serves mainly the need of the simplevcs middleware to be
         able to disable this for certain operations.
 
     """
     # Tri-state value: False: unlock, None: nothing, True: lock
     make_lock = None
     locked_by = [None, None, None]
     is_anonymous = username == User.DEFAULT_USER
     user = User.get_by_username(username)
     if not is_anonymous and check_locking:
         log.debug('Checking locking on repository "%s"', repo_name)
         repo = Repository.get_by_repo_name(repo_name)
         make_lock, __, locked_by = repo.get_locking_state(
             action, user.user_id)
     user_id = user.user_id
     settings_model = VcsSettingsModel(repo=repo_name)
     ui_settings = settings_model.get_ui_settings()
 
     # NOTE(marcink): This should be also in sync with
     # rhodecode/apps/ssh_support/lib/backends/base.py:update_environment scm_data
     store = [x for x in ui_settings if x.key == '/']
     repo_store = ''
     if store:
         repo_store = store[0].value
 
     scm_data = {
         'ip': get_ip_addr(environ),
         'username': username,
         'user_id': user_id,
         'action': action,
         'repository': repo_name,
         'scm': scm,
         'config': rhodecode.CONFIG['__file__'],
         'repo_store': repo_store,
         'make_lock': make_lock,
         'locked_by': locked_by,
         'server_url': utils2.get_server_url(environ),
         'user_agent': get_user_agent(environ),
         'hooks': get_enabled_hook_classes(ui_settings),
         'is_shadow_repo': is_shadow_repo,
         'detect_force_push': detect_force_push,
         'check_branch_perms': check_branch_perms,
     }
     return scm_data
 
 
 class BasicAuth(AuthBasicAuthenticator):
 
     def __init__(self, realm, authfunc, registry, auth_http_code=None,
                  initial_call_detection=False, acl_repo_name=None):
         self.realm = realm
         self.initial_call = initial_call_detection
         self.authfunc = authfunc
         self.registry = registry
         self.acl_repo_name = acl_repo_name
         self._rc_auth_http_code = auth_http_code
 
     def _get_response_from_code(self, http_code):
         try:
             return get_exception(safe_int(http_code))
         except Exception:
             log.exception('Failed to fetch response for code %s', http_code)
             return HTTPForbidden
 
     def get_rc_realm(self):
         return safe_str(self.registry.rhodecode_settings.get('rhodecode_realm'))
 
     def build_authentication(self):
         head = WWW_AUTHENTICATE.tuples('Basic realm="%s"' % self.realm)
         if self._rc_auth_http_code and not self.initial_call:
             # return alternative HTTP code if alternative http return code
             # is specified in RhodeCode config, but ONLY if it's not the
             # FIRST call
             custom_response_klass = self._get_response_from_code(
                 self._rc_auth_http_code)
             return custom_response_klass(headers=head)
         return HTTPUnauthorized(headers=head)
 
     def authenticate(self, environ):
         authorization = AUTHORIZATION(environ)
         if not authorization:
             return self.build_authentication()
         (authmeth, auth) = authorization.split(' ', 1)
         if 'basic' != authmeth.lower():
             return self.build_authentication()
         auth = auth.strip().decode('base64')
         _parts = auth.split(':', 1)
         if len(_parts) == 2:
             username, password = _parts
             auth_data = self.authfunc(
                     username, password, environ, VCS_TYPE,
                     registry=self.registry, acl_repo_name=self.acl_repo_name)
             if auth_data:
                 return {'username': username, 'auth_data': auth_data}
             if username and password:
                 # we mark that we actually executed authentication once, at
                 # that point we can use the alternative auth code
                 self.initial_call = False
 
         return self.build_authentication()
 
     __call__ = authenticate
 
 
 def calculate_version_hash(config):
     return sha1(
         config.get('beaker.session.secret', '') +
         rhodecode.__version__)[:8]
 
 
 def get_current_lang(request):
     # NOTE(marcink): remove after pyramid move
     try:
         return translation.get_lang()[0]
     except:
         pass
 
     return getattr(request, '_LOCALE_', request.locale_name)
 
 
 def attach_context_attributes(context, request, user_id=None):
     """
     Attach variables into template context called `c`.
     """
     config = request.registry.settings
 
     rc_config = SettingsModel().get_all_settings(cache=True)
     context.rc_config = rc_config
     context.rhodecode_version = rhodecode.__version__
     context.rhodecode_edition = config.get('rhodecode.edition')
     # unique secret + version does not leak the version but keep consistency
     context.rhodecode_version_hash = calculate_version_hash(config)
 
     # Default language set for the incoming request
     context.language = get_current_lang(request)
 
     # Visual options
     context.visual = AttributeDict({})
 
     # DB stored Visual Items
     context.visual.show_public_icon = str2bool(
         rc_config.get('rhodecode_show_public_icon'))
     context.visual.show_private_icon = str2bool(
         rc_config.get('rhodecode_show_private_icon'))
     context.visual.stylify_metatags = str2bool(
         rc_config.get('rhodecode_stylify_metatags'))
     context.visual.dashboard_items = safe_int(
         rc_config.get('rhodecode_dashboard_items', 100))
     context.visual.admin_grid_items = safe_int(
         rc_config.get('rhodecode_admin_grid_items', 100))
     context.visual.show_revision_number = str2bool(
         rc_config.get('rhodecode_show_revision_number', True))
     context.visual.show_sha_length = safe_int(
         rc_config.get('rhodecode_show_sha_length', 100))
     context.visual.repository_fields = str2bool(
         rc_config.get('rhodecode_repository_fields'))
     context.visual.show_version = str2bool(
         rc_config.get('rhodecode_show_version'))
     context.visual.use_gravatar = str2bool(
         rc_config.get('rhodecode_use_gravatar'))
     context.visual.gravatar_url = rc_config.get('rhodecode_gravatar_url')
     context.visual.default_renderer = rc_config.get(
         'rhodecode_markup_renderer', 'rst')
     context.visual.comment_types = ChangesetComment.COMMENT_TYPES
     context.visual.rhodecode_support_url = \
         rc_config.get('rhodecode_support_url') or h.route_url('rhodecode_support')
 
     context.visual.affected_files_cut_off = 60
 
     context.pre_code = rc_config.get('rhodecode_pre_code')
     context.post_code = rc_config.get('rhodecode_post_code')
     context.rhodecode_name = rc_config.get('rhodecode_title')
     context.default_encodings = aslist(config.get('default_encoding'), sep=',')
     # if we have specified default_encoding in the request, it has more
     # priority
     if request.GET.get('default_encoding'):
         context.default_encodings.insert(0, request.GET.get('default_encoding'))
     context.clone_uri_tmpl = rc_config.get('rhodecode_clone_uri_tmpl')
     context.clone_uri_ssh_tmpl = rc_config.get('rhodecode_clone_uri_ssh_tmpl')
 
     # INI stored
     context.labs_active = str2bool(
         config.get('labs_settings_active', 'false'))
     context.ssh_enabled = str2bool(
         config.get('ssh.generate_authorized_keyfile', 'false'))
     context.ssh_key_generator_enabled = str2bool(
         config.get('ssh.enable_ui_key_generator', 'true'))
 
     context.visual.allow_repo_location_change = str2bool(
         config.get('allow_repo_location_change', True))
     context.visual.allow_custom_hooks_settings = str2bool(
         config.get('allow_custom_hooks_settings', True))
     context.debug_style = str2bool(config.get('debug_style', False))
 
     context.rhodecode_instanceid = config.get('instance_id')
 
     context.visual.cut_off_limit_diff = safe_int(
         config.get('cut_off_limit_diff'))
     context.visual.cut_off_limit_file = safe_int(
         config.get('cut_off_limit_file'))
 
     # AppEnlight
     context.appenlight_enabled = str2bool(config.get('appenlight', 'false'))
     context.appenlight_api_public_key = config.get(
         'appenlight.api_public_key', '')
     context.appenlight_server_url = config.get('appenlight.server_url', '')
 
     diffmode = {
         "unified": "unified",
         "sideside": "sideside"
     }.get(request.GET.get('diffmode'))
 
     is_api = hasattr(request, 'rpc_user')
     session_attrs = {
         # defaults
         "clone_url_format": "http",
         "diffmode": "sideside"
     }
 
     if not is_api:
         # don't access pyramid session for API calls
         if diffmode and diffmode != request.session.get('rc_user_session_attr.diffmode'):
             request.session['rc_user_session_attr.diffmode'] = diffmode
 
         # session settings per user
 
         for k, v in request.session.items():
             pref = 'rc_user_session_attr.'
             if k and k.startswith(pref):
                 k = k[len(pref):]
                 session_attrs[k] = v
 
     context.user_session_attrs = session_attrs
 
     # JS template context
     context.template_context = {
         'repo_name': None,
         'repo_type': None,
         'repo_landing_commit': None,
         'rhodecode_user': {
             'username': None,
             'email': None,
             'notification_status': False
         },
         'session_attrs': session_attrs,
         'visual': {
             'default_renderer': None
         },
         'commit_data': {
             'commit_id': None
         },
         'pull_request_data': {'pull_request_id': None},
         'timeago': {
             'refresh_time': 120 * 1000,
             'cutoff_limit': 1000 * 60 * 60 * 24 * 7
         },
         'pyramid_dispatch': {
 
         },
         'extra': {'plugins': {}}
     }
     # END CONFIG VARS
     if is_api:
         csrf_token = None
     else:
         csrf_token = auth.get_csrf_token(session=request.session)
 
     context.csrf_token = csrf_token
     context.backends = rhodecode.BACKENDS.keys()
     context.backends.sort()
     unread_count = 0
     user_bookmark_list = []
     if user_id:
         unread_count = NotificationModel().get_unread_cnt_for_user(user_id)
         user_bookmark_list = UserBookmark.get_bookmarks_for_user(user_id)
     context.unread_notifications = unread_count
     context.bookmark_items = user_bookmark_list
 
     # web case
     if hasattr(request, 'user'):
         context.auth_user = request.user
         context.rhodecode_user = request.user
 
     # api case
     if hasattr(request, 'rpc_user'):
         context.auth_user = request.rpc_user
         context.rhodecode_user = request.rpc_user
 
     # attach the whole call context to the request
     request.call_context = context
 
 
 def get_auth_user(request):
     environ = request.environ
     session = request.session
 
     ip_addr = get_ip_addr(environ)
+
     # make sure that we update permissions each time we call controller
-    _auth_token = (request.GET.get('auth_token', '') or
-                   request.GET.get('api_key', ''))
+    _auth_token = (request.GET.get('auth_token', '') or request.GET.get('api_key', ''))
+    if not _auth_token:
+        url_auth_token = request.matchdict.get('_auth_token')
+        _auth_token = url_auth_token
+        if _auth_token:
+            log.debug('Using URL extracted auth token `...%s`', _auth_token[-4:])
 
     if _auth_token:
         # when using API_KEY we assume user exists, and
         # doesn't need auth based on cookies.
         auth_user = AuthUser(api_key=_auth_token, ip_addr=ip_addr)
         authenticated = False
     else:
         cookie_store = CookieStoreWrapper(session.get('rhodecode_user'))
         try:
             auth_user = AuthUser(user_id=cookie_store.get('user_id', None),
                                  ip_addr=ip_addr)
         except UserCreationError as e:
             h.flash(e, 'error')
             # container auth or other auth functions that create users
             # on the fly can throw this exception signaling that there's
             # issue with user creation, explanation should be provided
             # in Exception itself. We then create a simple blank
             # AuthUser
             auth_user = AuthUser(ip_addr=ip_addr)
 
         # in case someone changes a password for user it triggers session
         # flush and forces a re-login
         if password_changed(auth_user, session):
             session.invalidate()
             cookie_store = CookieStoreWrapper(session.get('rhodecode_user'))
             auth_user = AuthUser(ip_addr=ip_addr)
 
         authenticated = cookie_store.get('is_authenticated')
 
     if not auth_user.is_authenticated and auth_user.is_user_object:
         # user is not authenticated and not empty
         auth_user.set_authenticated(authenticated)
 
-    return auth_user
+    return auth_user, _auth_token
 
 
 def h_filter(s):
     """
     Custom filter for Mako templates. Mako by standard uses `markupsafe.escape`
     we wrap this with additional functionality that converts None to empty
     strings
     """
     if s is None:
         return markupsafe.Markup()
     return markupsafe.escape(s)
 
 
 def add_events_routes(config):
     """
     Adds routing that can be used in events. Because some events are triggered
     outside of pyramid context, we need to bootstrap request with some
     routing registered
     """
 
     from rhodecode.apps._base import ADMIN_PREFIX
 
     config.add_route(name='home', pattern='/')
 
     config.add_route(name='login', pattern=ADMIN_PREFIX + '/login')
     config.add_route(name='logout', pattern=ADMIN_PREFIX + '/logout')
     config.add_route(name='repo_summary', pattern='/{repo_name}')
     config.add_route(name='repo_summary_explicit', pattern='/{repo_name}/summary')
     config.add_route(name='repo_group_home', pattern='/{repo_group_name}')
 
     config.add_route(name='pullrequest_show',
                      pattern='/{repo_name}/pull-request/{pull_request_id}')
     config.add_route(name='pull_requests_global',
                      pattern='/pull-request/{pull_request_id}')
     config.add_route(name='repo_commit',
                      pattern='/{repo_name}/changeset/{commit_id}')
 
     config.add_route(name='repo_files',
                      pattern='/{repo_name}/files/{commit_id}/{f_path}')
 
 
 def bootstrap_config(request):
     import pyramid.testing
     registry = pyramid.testing.Registry('RcTestRegistry')
 
     config = pyramid.testing.setUp(registry=registry, request=request)
 
     # allow pyramid lookup in testing
     config.include('pyramid_mako')
     config.include('rhodecode.lib.rc_beaker')
     config.include('rhodecode.lib.rc_cache')
 
     add_events_routes(config)
 
     return config
 
 
 def bootstrap_request(**kwargs):
     import pyramid.testing
 
     class TestRequest(pyramid.testing.DummyRequest):
         application_url = kwargs.pop('application_url', 'http://example.com')
         host = kwargs.pop('host', 'example.com:80')
         domain = kwargs.pop('domain', 'example.com')
 
         def translate(self, msg):
             return msg
 
         def plularize(self, singular, plural, n):
             return singular
 
         def get_partial_renderer(self, tmpl_name):
 
             from rhodecode.lib.partial_renderer import get_partial_renderer
             return get_partial_renderer(request=self, tmpl_name=tmpl_name)
 
         _call_context = TemplateArgs()
         _call_context.visual = TemplateArgs()
         _call_context.visual.show_sha_length = 12
         _call_context.visual.show_revision_number = True
 
         @property
         def call_context(self):
             return self._call_context
 
     class TestDummySession(pyramid.testing.DummySession):
         def save(*arg, **kw):
             pass
 
     request = TestRequest(**kwargs)
     request.session = TestDummySession()
 
     return request
 

rhodecode/subscribers.py

@@ -1,327 +1,328 b''
 # -*- coding: utf-8 -*-
 
 # Copyright (C) 2010-2019 RhodeCode GmbH
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License, version 3
 # (only), as published by the Free Software Foundation.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 # This program is dual-licensed. If you wish to learn more about the
 # RhodeCode Enterprise Edition, including its added features, Support services,
 # and proprietary license terms, please see https://rhodecode.com/licenses/
 import io
 import re
 import os
 import datetime
 import logging
 import Queue
 import subprocess32
 
 
 from dateutil.parser import parse
 from pyramid.threadlocal import get_current_request
 from pyramid.interfaces import IRoutesMapper
 from pyramid.settings import asbool
 from pyramid.path import AssetResolver
 from threading import Thread
 
 from rhodecode.translation import _ as tsf
 from rhodecode.config.jsroutes import generate_jsroutes_content
 from rhodecode.lib import auth
 from rhodecode.lib.base import get_auth_user
 
 import rhodecode
 
 
 log = logging.getLogger(__name__)
 
 
 def add_renderer_globals(event):
     from rhodecode.lib import helpers
 
     # TODO: When executed in pyramid view context the request is not available
     # in the event. Find a better solution to get the request.
     request = event['request'] or get_current_request()
 
     # Add Pyramid translation as '_' to context
     event['_'] = request.translate
     event['_ungettext'] = request.plularize
     event['h'] = helpers
 
 
 def add_localizer(event):
     request = event.request
     localizer = request.localizer
 
     def auto_translate(*args, **kwargs):
         return localizer.translate(tsf(*args, **kwargs))
 
     request.translate = auto_translate
     request.plularize = localizer.pluralize
 
 
 def set_user_lang(event):
     request = event.request
     cur_user = getattr(request, 'user', None)
 
     if cur_user:
         user_lang = cur_user.get_instance().user_data.get('language')
         if user_lang:
             log.debug('lang: setting current user:%s language to: %s', cur_user, user_lang)
             event.request._LOCALE_ = user_lang
 
 
 def add_request_user_context(event):
     """
     Adds auth user into request context
     """
     request = event.request
     # access req_id as soon as possible
     req_id = request.req_id
 
     if hasattr(request, 'vcs_call'):
         # skip vcs calls
         return
 
     if hasattr(request, 'rpc_method'):
         # skip api calls
         return
 
-    auth_user = get_auth_user(request)
+    auth_user, auth_token = get_auth_user(request)
     request.user = auth_user
+    request.user_auth_token = auth_token
     request.environ['rc_auth_user'] = auth_user
     request.environ['rc_auth_user_id'] = auth_user.user_id
     request.environ['rc_req_id'] = req_id
 
 
 def inject_app_settings(event):
     settings = event.app.registry.settings
     # inject info about available permissions
     auth.set_available_permissions(settings)
 
 
 def scan_repositories_if_enabled(event):
     """
     This is subscribed to the `pyramid.events.ApplicationCreated` event. It
     does a repository scan if enabled in the settings.
     """
     settings = event.app.registry.settings
     vcs_server_enabled = settings['vcs.server.enable']
     import_on_startup = settings['startup.import_repos']
     if vcs_server_enabled and import_on_startup:
         from rhodecode.model.scm import ScmModel
         from rhodecode.lib.utils import repo2db_mapper, get_rhodecode_base_path
         repositories = ScmModel().repo_scan(get_rhodecode_base_path())
         repo2db_mapper(repositories, remove_obsolete=False)
 
 
 def write_metadata_if_needed(event):
     """
     Writes upgrade metadata
     """
     import rhodecode
     from rhodecode.lib import system_info
     from rhodecode.lib import ext_json
 
     fname = '.rcmetadata.json'
     ini_loc = os.path.dirname(rhodecode.CONFIG.get('__file__'))
     metadata_destination = os.path.join(ini_loc, fname)
 
     def get_update_age():
         now = datetime.datetime.utcnow()
 
         with open(metadata_destination, 'rb') as f:
             data = ext_json.json.loads(f.read())
             if 'created_on' in data:
                 update_date = parse(data['created_on'])
                 diff = now - update_date
                 return diff.total_seconds() / 60.0
 
         return 0
 
     def write():
         configuration = system_info.SysInfo(
             system_info.rhodecode_config)()['value']
         license_token = configuration['config']['license_token']
 
         setup = dict(
             workers=configuration['config']['server:main'].get(
                 'workers', '?'),
             worker_type=configuration['config']['server:main'].get(
                 'worker_class', 'sync'),
         )
         dbinfo = system_info.SysInfo(system_info.database_info)()['value']
         del dbinfo['url']
 
         metadata = dict(
             desc='upgrade metadata info',
             license_token=license_token,
             created_on=datetime.datetime.utcnow().isoformat(),
             usage=system_info.SysInfo(system_info.usage_info)()['value'],
             platform=system_info.SysInfo(system_info.platform_type)()['value'],
             database=dbinfo,
             cpu=system_info.SysInfo(system_info.cpu)()['value'],
             memory=system_info.SysInfo(system_info.memory)()['value'],
             setup=setup
         )
 
         with open(metadata_destination, 'wb') as f:
             f.write(ext_json.json.dumps(metadata))
 
     settings = event.app.registry.settings
     if settings.get('metadata.skip'):
         return
 
     # only write this every 24h, workers restart caused unwanted delays
     try:
         age_in_min = get_update_age()
     except Exception:
         age_in_min = 0
 
     if age_in_min > 60 * 60 * 24:
         return
 
     try:
         write()
     except Exception:
         pass
 
 
 def write_js_routes_if_enabled(event):
     registry = event.app.registry
 
     mapper = registry.queryUtility(IRoutesMapper)
     _argument_prog = re.compile('\{(.*?)\}|:\((.*)\)')
 
     def _extract_route_information(route):
         """
         Convert a route into tuple(name, path, args), eg:
             ('show_user', '/profile/%(username)s', ['username'])
         """
 
         routepath = route.pattern
         pattern = route.pattern
 
         def replace(matchobj):
             if matchobj.group(1):
                 return "%%(%s)s" % matchobj.group(1).split(':')[0]
             else:
                 return "%%(%s)s" % matchobj.group(2)
 
         routepath = _argument_prog.sub(replace, routepath)
 
         if not routepath.startswith('/'):
             routepath = '/'+routepath
 
         return (
             route.name,
             routepath,
             [(arg[0].split(':')[0] if arg[0] != '' else arg[1])
               for arg in _argument_prog.findall(pattern)]
         )
 
     def get_routes():
         # pyramid routes
         for route in mapper.get_routes():
             if not route.name.startswith('__'):
                 yield _extract_route_information(route)
 
     if asbool(registry.settings.get('generate_js_files', 'false')):
         static_path = AssetResolver().resolve('rhodecode:public').abspath()
         jsroutes = get_routes()
         jsroutes_file_content = generate_jsroutes_content(jsroutes)
         jsroutes_file_path = os.path.join(
             static_path, 'js', 'rhodecode', 'routes.js')
 
         try:
             with io.open(jsroutes_file_path, 'w', encoding='utf-8') as f:
                 f.write(jsroutes_file_content)
         except Exception:
             log.exception('Failed to write routes.js into %s', jsroutes_file_path)
 
 
 class Subscriber(object):
     """
     Base class for subscribers to the pyramid event system.
     """
     def __call__(self, event):
         self.run(event)
 
     def run(self, event):
         raise NotImplementedError('Subclass has to implement this.')
 
 
 class AsyncSubscriber(Subscriber):
     """
     Subscriber that handles the execution of events in a separate task to not
     block the execution of the code which triggers the event. It puts the
     received events into a queue from which the worker process takes them in
     order.
     """
     def __init__(self):
         self._stop = False
         self._eventq = Queue.Queue()
         self._worker = self.create_worker()
         self._worker.start()
 
     def __call__(self, event):
         self._eventq.put(event)
 
     def create_worker(self):
         worker = Thread(target=self.do_work)
         worker.daemon = True
         return worker
 
     def stop_worker(self):
         self._stop = False
         self._eventq.put(None)
         self._worker.join()
 
     def do_work(self):
         while not self._stop:
             event = self._eventq.get()
             if event is not None:
                 self.run(event)
 
 
 class AsyncSubprocessSubscriber(AsyncSubscriber):
     """
     Subscriber that uses the subprocess32 module to execute a command if an
     event is received. Events are handled asynchronously.
     """
 
     def __init__(self, cmd, timeout=None):
         super(AsyncSubprocessSubscriber, self).__init__()
         self._cmd = cmd
         self._timeout = timeout
 
     def run(self, event):
         cmd = self._cmd
         timeout = self._timeout
         log.debug('Executing command %s.', cmd)
 
         try:
             output = subprocess32.check_output(
                 cmd, timeout=timeout, stderr=subprocess32.STDOUT)
             log.debug('Command finished %s', cmd)
             if output:
                 log.debug('Command output: %s', output)
         except subprocess32.TimeoutExpired as e:
             log.exception('Timeout while executing command.')
             if e.output:
                 log.error('Command output: %s', e.output)
         except subprocess32.CalledProcessError as e:
             log.exception('Error while executing command.')
             if e.output:
                 log.error('Command output: %s', e.output)
         except:
             log.exception(
                 'Exception while executing command %s.', cmd)