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# Copyright (C) 2016-2023 RhodeCode GmbH
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License, version 3
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# (only), as published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# This program is dual-licensed. If you wish to learn more about the
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# RhodeCode Enterprise Edition, including its added features, Support services,
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# and proprietary license terms, please see https://rhodecode.com/licenses/
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import os
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import itsdangerous
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import logging
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import requests
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import datetime
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from dogpile.util.readwrite_lock import ReadWriteMutex
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import rhodecode.lib.helpers as h
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from rhodecode.lib.auth import HasRepoPermissionAny
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from rhodecode.lib.ext_json import json
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from rhodecode.model.db import User
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from rhodecode.lib.str_utils import ascii_str
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from rhodecode.lib.hash_utils import sha1_safe
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log = logging.getLogger(__name__)
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LOCK = ReadWriteMutex()
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USER_STATE_PUBLIC_KEYS = [
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'id', 'username', 'first_name', 'last_name',
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'icon_link', 'display_name', 'display_link']
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class ChannelstreamException(Exception):
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pass
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class ChannelstreamConnectionException(ChannelstreamException):
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pass
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class ChannelstreamPermissionException(ChannelstreamException):
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pass
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def get_channelstream_server_url(config, endpoint):
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return 'http://{}{}'.format(config['server'], endpoint)
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def channelstream_request(config, payload, endpoint, raise_exc=True):
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signer = itsdangerous.TimestampSigner(config['secret'])
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sig_for_server = signer.sign(endpoint)
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secret_headers = {'x-channelstream-secret': sig_for_server,
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'x-channelstream-endpoint': endpoint,
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'Content-Type': 'application/json'}
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req_url = get_channelstream_server_url(config, endpoint)
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log.debug('Sending a channelstream request to endpoint: `%s`', req_url)
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response = None
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try:
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response = requests.post(req_url, data=json.dumps(payload),
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headers=secret_headers).json()
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except requests.ConnectionError:
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log.exception('ConnectionError occurred for endpoint %s', req_url)
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if raise_exc:
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raise ChannelstreamConnectionException(req_url)
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except Exception:
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log.exception('Exception related to Channelstream happened')
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if raise_exc:
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raise ChannelstreamConnectionException()
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log.debug('Got channelstream response: %s', response)
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return response
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def get_user_data(user_id):
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user = User.get(user_id)
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return {
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'id': user.user_id,
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'username': user.username,
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'first_name': user.first_name,
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'last_name': user.last_name,
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'icon_link': h.gravatar_url(user.email, 60),
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'display_name': h.person(user, 'username_or_name_or_email'),
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'display_link': h.link_to_user(user),
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'notifications': user.user_data.get('notification_status', True)
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}
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def broadcast_validator(channel_name):
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""" checks if user can access the broadcast channel """
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if channel_name == 'broadcast':
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return True
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def repo_validator(channel_name):
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""" checks if user can access the broadcast channel """
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channel_prefix = '/repo$'
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if channel_name.startswith(channel_prefix):
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elements = channel_name[len(channel_prefix):].split('$')
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repo_name = elements[0]
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can_access = HasRepoPermissionAny(
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'repository.read',
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'repository.write',
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'repository.admin')(repo_name)
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log.debug(
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'permission check for %s channel resulted in %s',
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repo_name, can_access)
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if can_access:
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return True
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return False
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def check_channel_permissions(channels, plugin_validators, should_raise=True):
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valid_channels = []
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validators = [broadcast_validator, repo_validator]
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if plugin_validators:
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validators.extend(plugin_validators)
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for channel_name in channels:
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is_valid = False
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for validator in validators:
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if validator(channel_name):
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is_valid = True
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break
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if is_valid:
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valid_channels.append(channel_name)
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else:
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if should_raise:
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raise ChannelstreamPermissionException()
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return valid_channels
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def get_channels_info(self, channels):
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payload = {'channels': channels}
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# gather persistence info
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return channelstream_request(self._config(), payload, '/info')
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def parse_channels_info(info_result, include_channel_info=None):
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"""
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Returns data that contains only secure information that can be
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presented to clients
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"""
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include_channel_info = include_channel_info or []
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user_state_dict = {}
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for userinfo in info_result['users']:
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user_state_dict[userinfo['user']] = {
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k: v for k, v in list(userinfo['state'].items())
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if k in USER_STATE_PUBLIC_KEYS
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}
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channels_info = {}
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for c_name, c_info in list(info_result['channels'].items()):
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if c_name not in include_channel_info:
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continue
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connected_list = []
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for username in c_info['users']:
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connected_list.append({
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'user': username,
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'state': user_state_dict[username]
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})
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channels_info[c_name] = {'users': connected_list,
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'history': c_info['history']}
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return channels_info
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def log_filepath(history_location, channel_name):
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channel_hash = sha1_safe(channel_name, return_type='str')
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filename = f'{channel_hash}.log'
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filepath = os.path.join(history_location, filename)
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return filepath
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def read_history(history_location, channel_name):
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filepath = log_filepath(history_location, channel_name)
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if not os.path.exists(filepath):
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return []
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history_lines_limit = -100
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history = []
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with open(filepath, 'rb') as f:
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for line in f.readlines()[history_lines_limit:]:
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try:
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history.append(json.loads(line))
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except Exception:
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log.exception('Failed to load history')
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return history
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def update_history_from_logs(config, channels, payload):
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history_location = config.get('history.location')
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for channel in channels:
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history = read_history(history_location, channel)
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payload['channels_info'][channel]['history'] = history
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def write_history(config, message):
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""" writes a message to a base64encoded filename """
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history_location = config.get('history.location')
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if not os.path.exists(history_location):
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return
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try:
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LOCK.acquire_write_lock()
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filepath = log_filepath(history_location, message['channel'])
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json_message = json.dumps(message)
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with open(filepath, 'ab') as f:
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f.write(json_message)
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f.write('\n')
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finally:
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LOCK.release_write_lock()
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def get_connection_validators(registry):
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validators = []
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for k, config in list(registry.rhodecode_plugins.items()):
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validator = config.get('channelstream', {}).get('connect_validator')
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if validator:
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validators.append(validator)
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return validators
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def get_channelstream_config(registry=None):
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if not registry:
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from pyramid.threadlocal import get_current_registry
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registry = get_current_registry()
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rhodecode_plugins = getattr(registry, 'rhodecode_plugins', {})
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channelstream_config = rhodecode_plugins.get('channelstream', {})
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return channelstream_config
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def post_message(channel, message, username, registry=None):
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channelstream_config = get_channelstream_config(registry)
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if not channelstream_config.get('enabled'):
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return
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message_obj = message
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if isinstance(message, str):
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message_obj = {
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'message': message,
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'level': 'success',
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'topic': '/notifications'
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}
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log.debug('Channelstream: sending notification to channel %s', channel)
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payload = {
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'type': 'message',
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'timestamp': datetime.datetime.utcnow(),
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'user': 'system',
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'exclude_users': [username],
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'channel': channel,
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'message': message_obj
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}
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try:
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return channelstream_request(
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channelstream_config, [payload], '/message',
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raise_exc=False)
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except ChannelstreamException:
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log.exception('Failed to send channelstream data')
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raise
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def _reload_link(label):
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return (
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'<a onclick="window.location.reload()">'
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'<strong>{}</strong>'
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'</a>'.format(label)
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)
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def pr_channel(pull_request):
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repo_name = pull_request.target_repo.repo_name
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pull_request_id = pull_request.pull_request_id
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channel = f'/repo${repo_name}$/pr/{pull_request_id}'
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log.debug('Getting pull-request channelstream broadcast channel: %s', channel)
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return channel
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def comment_channel(repo_name, commit_obj=None, pull_request_obj=None):
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channel = None
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if commit_obj:
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channel = '/repo${}$/commit/{}'.format(
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repo_name, commit_obj.raw_id
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)
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elif pull_request_obj:
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channel = '/repo${}$/pr/{}'.format(
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repo_name, pull_request_obj.pull_request_id
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)
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log.debug('Getting comment channelstream broadcast channel: %s', channel)
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return channel
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def pr_update_channelstream_push(request, pr_broadcast_channel, user, msg, **kwargs):
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"""
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Channel push on pull request update
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"""
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if not pr_broadcast_channel:
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return
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_ = request.translate
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message = '{} {}'.format(
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msg,
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_reload_link(_(' Reload page to load changes')))
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message_obj = {
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'message': message,
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'level': 'success',
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'topic': '/notifications'
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}
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post_message(
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pr_broadcast_channel, message_obj, user.username,
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registry=request.registry)
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def comment_channelstream_push(request, comment_broadcast_channel, user, msg, **kwargs):
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"""
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Channelstream push on comment action, on commit, or pull-request
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"""
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if not comment_broadcast_channel:
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return
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_ = request.translate
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comment_data = kwargs.pop('comment_data', {})
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user_data = kwargs.pop('user_data', {})
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comment_id = list(comment_data.keys())[0] if comment_data else ''
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message = '<strong>{}</strong> {} #{}'.format(
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user.username,
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msg,
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comment_id,
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)
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message_obj = {
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'message': message,
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'level': 'success',
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'topic': '/notifications'
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}
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post_message(
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comment_broadcast_channel, message_obj, user.username,
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registry=request.registry)
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message_obj = {
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'message': None,
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'user': user.username,
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'comment_id': comment_id,
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'comment_data': comment_data,
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'user_data': user_data,
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'topic': '/comment'
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}
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post_message(
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comment_broadcast_channel, message_obj, user.username,
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registry=request.registry)
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