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# -*- coding: utf-8 -*-
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"""
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rhodecode.lib.auth
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~~~~~~~~~~~~~~~~~~
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authentication and permission libraries
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:created_on: Apr 4, 2010
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:copyright: (c) 2010 by marcink.
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:license: LICENSE_NAME, see LICENSE_FILE for more details.
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"""
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; version 2
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# of the License or (at your opinion) any later version of the license.
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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 General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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# MA 02110-1301, USA.
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import random
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import logging
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import traceback
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import hashlib
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from tempfile import _RandomNameSequence
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from decorator import decorator
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from pylons import config, session, url, request
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from pylons.controllers.util import abort, redirect
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from pylons.i18n.translation import _
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from rhodecode import __platform__
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if __platform__ == 'Windows':
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from hashlib import sha256
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if __platform__ in ('Linux', 'Darwin'):
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import bcrypt
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from rhodecode.lib import str2bool
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from rhodecode.lib.exceptions import LdapPasswordError, LdapUsernameError
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from rhodecode.lib.utils import get_repo_slug
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from rhodecode.lib.auth_ldap import AuthLdap
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from rhodecode.model import meta
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from rhodecode.model.user import UserModel
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from rhodecode.model.db import Permission
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log = logging.getLogger(__name__)
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class PasswordGenerator(object):
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"""This is a simple class for generating password from
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different sets of characters
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usage:
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passwd_gen = PasswordGenerator()
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#print 8-letter password containing only big and small letters of alphabet
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print passwd_gen.gen_password(8, passwd_gen.ALPHABETS_BIG_SMALL)
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"""
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ALPHABETS_NUM = r'''1234567890'''#[0]
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ALPHABETS_SMALL = r'''qwertyuiopasdfghjklzxcvbnm'''#[1]
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ALPHABETS_BIG = r'''QWERTYUIOPASDFGHJKLZXCVBNM'''#[2]
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ALPHABETS_SPECIAL = r'''`-=[]\;',./~!@#$%^&*()_+{}|:"<>?''' #[3]
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ALPHABETS_FULL = ALPHABETS_BIG + ALPHABETS_SMALL + ALPHABETS_NUM + ALPHABETS_SPECIAL#[4]
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ALPHABETS_ALPHANUM = ALPHABETS_BIG + ALPHABETS_SMALL + ALPHABETS_NUM#[5]
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ALPHABETS_BIG_SMALL = ALPHABETS_BIG + ALPHABETS_SMALL
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ALPHABETS_ALPHANUM_BIG = ALPHABETS_BIG + ALPHABETS_NUM#[6]
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ALPHABETS_ALPHANUM_SMALL = ALPHABETS_SMALL + ALPHABETS_NUM#[7]
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def __init__(self, passwd=''):
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self.passwd = passwd
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def gen_password(self, len, type):
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self.passwd = ''.join([random.choice(type) for _ in xrange(len)])
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return self.passwd
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class RhodeCodeCrypto(object):
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@classmethod
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def hash_string(cls, str_):
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"""
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Cryptographic function used for password hashing based on pybcrypt
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or pycrypto in windows
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:param password: password to hash
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"""
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if __platform__ == 'Windows':
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return sha256(str_).hexdigest()
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elif __platform__ in ('Linux', 'Darwin'):
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return bcrypt.hashpw(str_, bcrypt.gensalt(10))
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else:
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raise Exception('Unknown or unsupoprted platform %s' % __platform__)
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@classmethod
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def hash_check(cls, password, hashed):
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"""
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Checks matching password with it's hashed value, runs different
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implementation based on platform it runs on
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:param password: password
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:param hashed: password in hashed form
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"""
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if __platform__ == 'Windows':
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return sha256(password).hexdigest() == hashed
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elif __platform__ in ('Linux', 'Darwin'):
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return bcrypt.hashpw(password, hashed) == hashed
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else:
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raise Exception('Unknown or unsupoprted platform %s' % __platform__)
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def get_crypt_password(password):
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return RhodeCodeCrypto.hash_string(password)
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def check_password(password, hashed):
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return RhodeCodeCrypto.hash_check(password, hashed)
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def generate_api_key(username, salt=None):
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if salt is None:
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salt = _RandomNameSequence().next()
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return hashlib.sha1(username + salt).hexdigest()
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def authfunc(environ, username, password):
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"""Dummy authentication function used in Mercurial/Git/ and access control,
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:param environ: needed only for using in Basic auth
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"""
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return authenticate(username, password)
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def authenticate(username, password):
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"""Authentication function used for access control,
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firstly checks for db authentication then if ldap is enabled for ldap
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authentication, also creates ldap user if not in database
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:param username: username
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:param password: password
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"""
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user_model = UserModel()
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user = user_model.get_by_username(username, cache=False)
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log.debug('Authenticating user using RhodeCode account')
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if user is not None and not user.ldap_dn:
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if user.active:
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if user.username == 'default' and user.active:
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log.info('user %s authenticated correctly as anonymous user',
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username)
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return True
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elif user.username == username and check_password(password, user.password):
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log.info('user %s authenticated correctly', username)
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return True
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else:
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log.warning('user %s is disabled', username)
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else:
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log.debug('Regular authentication failed')
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user_obj = user_model.get_by_username(username, cache=False,
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case_insensitive=True)
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if user_obj is not None and not user_obj.ldap_dn:
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log.debug('this user already exists as non ldap')
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return False
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from rhodecode.model.settings import SettingsModel
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ldap_settings = SettingsModel().get_ldap_settings()
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#======================================================================
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# FALLBACK TO LDAP AUTH IF ENABLE
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#======================================================================
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if str2bool(ldap_settings.get('ldap_active')):
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log.debug("Authenticating user using ldap")
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kwargs = {
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'server':ldap_settings.get('ldap_host', ''),
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'base_dn':ldap_settings.get('ldap_base_dn', ''),
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'port':ldap_settings.get('ldap_port'),
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'bind_dn':ldap_settings.get('ldap_dn_user'),
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'bind_pass':ldap_settings.get('ldap_dn_pass'),
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'use_ldaps':str2bool(ldap_settings.get('ldap_ldaps')),
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'tls_reqcert':ldap_settings.get('ldap_tls_reqcert'),
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'ldap_filter':ldap_settings.get('ldap_filter'),
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'search_scope':ldap_settings.get('ldap_search_scope'),
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'attr_login':ldap_settings.get('ldap_attr_login'),
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'ldap_version':3,
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}
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log.debug('Checking for ldap authentication')
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try:
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aldap = AuthLdap(**kwargs)
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(user_dn, ldap_attrs) = aldap.authenticate_ldap(username, password)
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log.debug('Got ldap DN response %s', user_dn)
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user_attrs = {
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'name' : ldap_attrs[ldap_settings.get('ldap_attr_firstname')][0],
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'lastname' : ldap_attrs[ldap_settings.get('ldap_attr_lastname')][0],
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'email' : ldap_attrs[ldap_settings.get('ldap_attr_email')][0],
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}
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if user_model.create_ldap(username, password, user_dn, user_attrs):
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log.info('created new ldap user %s', username)
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return True
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except (LdapUsernameError, LdapPasswordError,):
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pass
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except (Exception,):
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log.error(traceback.format_exc())
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pass
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return False
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class AuthUser(object):
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"""
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A simple object that handles all attributes of user in RhodeCode
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It does lookup based on API key,given user, or user present in session
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Then it fills all required information for such user. It also checks if
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anonymous access is enabled and if so, it returns default user as logged
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in
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"""
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def __init__(self, user_id=None, api_key=None):
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self.user_id = user_id
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self.api_key = None
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self.username = 'None'
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self.name = ''
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self.lastname = ''
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self.email = ''
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self.is_authenticated = False
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self.admin = False
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self.permissions = {}
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self._api_key = api_key
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self.propagate_data()
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def propagate_data(self):
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user_model = UserModel()
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self.anonymous_user = user_model.get_by_username('default', cache=True)
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if self._api_key and self._api_key != self.anonymous_user.api_key:
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#try go get user by api key
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log.debug('Auth User lookup by API KEY %s', self._api_key)
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user_model.fill_data(self, api_key=self._api_key)
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else:
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log.debug('Auth User lookup by USER ID %s', self.user_id)
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if self.user_id is not None and self.user_id != self.anonymous_user.user_id:
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user_model.fill_data(self, user_id=self.user_id)
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else:
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if self.anonymous_user.active is True:
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user_model.fill_data(self, user_id=self.anonymous_user.user_id)
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#then we set this user is logged in
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self.is_authenticated = True
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else:
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self.is_authenticated = False
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log.debug('Auth User is now %s', self)
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user_model.fill_perms(self)
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@property
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def is_admin(self):
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return self.admin
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def __repr__(self):
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return "<AuthUser('id:%s:%s|%s')>" % (self.user_id, self.username,
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self.is_authenticated)
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def set_authenticated(self, authenticated=True):
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if self.user_id != self.anonymous_user.user_id:
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self.is_authenticated = authenticated
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def set_available_permissions(config):
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"""This function will propagate pylons globals with all available defined
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permission given in db. We don't want to check each time from db for new
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permissions since adding a new permission also requires application restart
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ie. to decorate new views with the newly created permission
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:param config: current pylons config instance
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"""
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log.info('getting information about all available permissions')
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try:
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sa = meta.Session()
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all_perms = sa.query(Permission).all()
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except:
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pass
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finally:
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meta.Session.remove()
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config['available_permissions'] = [x.permission_name for x in all_perms]
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#===============================================================================
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# CHECK DECORATORS
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#===============================================================================
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class LoginRequired(object):
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"""
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Must be logged in to execute this function else
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redirect to login page
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:param api_access: if enabled this checks only for valid auth token
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and grants access based on valid token
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"""
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def __init__(self, api_access=False):
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self.api_access = api_access
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def __call__(self, func):
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return decorator(self.__wrapper, func)
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def __wrapper(self, func, *fargs, **fkwargs):
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cls = fargs[0]
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user = cls.rhodecode_user
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api_access_ok = False
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if self.api_access:
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log.debug('Checking API KEY access for %s', cls)
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if user.api_key == request.GET.get('api_key'):
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api_access_ok = True
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else:
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log.debug("API KEY token not valid")
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log.debug('Checking if %s is authenticated @ %s', user.username, cls)
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if user.is_authenticated or api_access_ok:
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log.debug('user %s is authenticated', user.username)
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return func(*fargs, **fkwargs)
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else:
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log.warn('user %s NOT authenticated', user.username)
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p = ''
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if request.environ.get('SCRIPT_NAME') != '/':
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p += request.environ.get('SCRIPT_NAME')
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p += request.environ.get('PATH_INFO')
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if request.environ.get('QUERY_STRING'):
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p += '?' + request.environ.get('QUERY_STRING')
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log.debug('redirecting to login page with %s', p)
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return redirect(url('login_home', came_from=p))
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class NotAnonymous(object):
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"""Must be logged in to execute this function else
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redirect to login page"""
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def __call__(self, func):
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return decorator(self.__wrapper, func)
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def __wrapper(self, func, *fargs, **fkwargs):
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cls = fargs[0]
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self.user = cls.rhodecode_user
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log.debug('Checking if user is not anonymous @%s', cls)
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anonymous = self.user.username == 'default'
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if anonymous:
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p = ''
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if request.environ.get('SCRIPT_NAME') != '/':
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p += request.environ.get('SCRIPT_NAME')
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p += request.environ.get('PATH_INFO')
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if request.environ.get('QUERY_STRING'):
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p += '?' + request.environ.get('QUERY_STRING')
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import rhodecode.lib.helpers as h
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h.flash(_('You need to be a registered user to perform this action'),
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category='warning')
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return redirect(url('login_home', came_from=p))
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else:
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return func(*fargs, **fkwargs)
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class PermsDecorator(object):
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"""Base class for controller decorators"""
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def __init__(self, *required_perms):
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available_perms = config['available_permissions']
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for perm in required_perms:
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if perm not in available_perms:
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raise Exception("'%s' permission is not defined" % perm)
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self.required_perms = set(required_perms)
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self.user_perms = None
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def __call__(self, func):
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return decorator(self.__wrapper, func)
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def __wrapper(self, func, *fargs, **fkwargs):
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cls = fargs[0]
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self.user = cls.rhodecode_user
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self.user_perms = self.user.permissions
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log.debug('checking %s permissions %s for %s %s',
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self.__class__.__name__, self.required_perms, cls,
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self.user)
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if self.check_permissions():
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log.debug('Permission granted for %s %s', cls, self.user)
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return func(*fargs, **fkwargs)
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else:
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log.warning('Permission denied for %s %s', cls, self.user)
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#redirect with forbidden ret code
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return abort(403)
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def check_permissions(self):
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"""Dummy function for overriding"""
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raise Exception('You have to write this function in child class')
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class HasPermissionAllDecorator(PermsDecorator):
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"""Checks for access permission for all given predicates. All of them
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have to be meet in order to fulfill the request
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"""
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def check_permissions(self):
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if self.required_perms.issubset(self.user_perms.get('global')):
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return True
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return False
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class HasPermissionAnyDecorator(PermsDecorator):
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"""Checks for access permission for any of given predicates. In order to
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|
fulfill the request any of predicates must be meet
|
|
|
"""
|
|
|
|
|
|
def check_permissions(self):
|
|
|
if self.required_perms.intersection(self.user_perms.get('global')):
|
|
|
return True
|
|
|
return False
|
|
|
|
|
|
class HasRepoPermissionAllDecorator(PermsDecorator):
|
|
|
"""Checks for access permission for all given predicates for specific
|
|
|
repository. All of them have to be meet in order to fulfill the request
|
|
|
"""
|
|
|
|
|
|
def check_permissions(self):
|
|
|
repo_name = get_repo_slug(request)
|
|
|
try:
|
|
|
user_perms = set([self.user_perms['repositories'][repo_name]])
|
|
|
except KeyError:
|
|
|
return False
|
|
|
if self.required_perms.issubset(user_perms):
|
|
|
return True
|
|
|
return False
|
|
|
|
|
|
|
|
|
class HasRepoPermissionAnyDecorator(PermsDecorator):
|
|
|
"""Checks for access permission for any of given predicates for specific
|
|
|
repository. In order to fulfill the request any of predicates must be meet
|
|
|
"""
|
|
|
|
|
|
def check_permissions(self):
|
|
|
repo_name = get_repo_slug(request)
|
|
|
|
|
|
try:
|
|
|
user_perms = set([self.user_perms['repositories'][repo_name]])
|
|
|
except KeyError:
|
|
|
return False
|
|
|
if self.required_perms.intersection(user_perms):
|
|
|
return True
|
|
|
return False
|
|
|
#===============================================================================
|
|
|
# CHECK FUNCTIONS
|
|
|
#===============================================================================
|
|
|
|
|
|
class PermsFunction(object):
|
|
|
"""Base function for other check functions"""
|
|
|
|
|
|
def __init__(self, *perms):
|
|
|
available_perms = config['available_permissions']
|
|
|
|
|
|
for perm in perms:
|
|
|
if perm not in available_perms:
|
|
|
raise Exception("'%s' permission in not defined" % perm)
|
|
|
self.required_perms = set(perms)
|
|
|
self.user_perms = None
|
|
|
self.granted_for = ''
|
|
|
self.repo_name = None
|
|
|
|
|
|
def __call__(self, check_Location=''):
|
|
|
user = session.get('rhodecode_user', False)
|
|
|
if not user:
|
|
|
return False
|
|
|
self.user_perms = user.permissions
|
|
|
self.granted_for = user
|
|
|
log.debug('checking %s %s %s', self.__class__.__name__,
|
|
|
self.required_perms, user)
|
|
|
|
|
|
if self.check_permissions():
|
|
|
log.debug('Permission granted %s @ %s', self.granted_for,
|
|
|
check_Location or 'unspecified location')
|
|
|
return True
|
|
|
|
|
|
else:
|
|
|
log.warning('Permission denied for %s @ %s', self.granted_for,
|
|
|
check_Location or 'unspecified location')
|
|
|
return False
|
|
|
|
|
|
def check_permissions(self):
|
|
|
"""Dummy function for overriding"""
|
|
|
raise Exception('You have to write this function in child class')
|
|
|
|
|
|
class HasPermissionAll(PermsFunction):
|
|
|
def check_permissions(self):
|
|
|
if self.required_perms.issubset(self.user_perms.get('global')):
|
|
|
return True
|
|
|
return False
|
|
|
|
|
|
class HasPermissionAny(PermsFunction):
|
|
|
def check_permissions(self):
|
|
|
if self.required_perms.intersection(self.user_perms.get('global')):
|
|
|
return True
|
|
|
return False
|
|
|
|
|
|
class HasRepoPermissionAll(PermsFunction):
|
|
|
|
|
|
def __call__(self, repo_name=None, check_Location=''):
|
|
|
self.repo_name = repo_name
|
|
|
return super(HasRepoPermissionAll, self).__call__(check_Location)
|
|
|
|
|
|
def check_permissions(self):
|
|
|
if not self.repo_name:
|
|
|
self.repo_name = get_repo_slug(request)
|
|
|
|
|
|
try:
|
|
|
self.user_perms = set([self.user_perms['repositories']\
|
|
|
[self.repo_name]])
|
|
|
except KeyError:
|
|
|
return False
|
|
|
self.granted_for = self.repo_name
|
|
|
if self.required_perms.issubset(self.user_perms):
|
|
|
return True
|
|
|
return False
|
|
|
|
|
|
class HasRepoPermissionAny(PermsFunction):
|
|
|
|
|
|
def __call__(self, repo_name=None, check_Location=''):
|
|
|
self.repo_name = repo_name
|
|
|
return super(HasRepoPermissionAny, self).__call__(check_Location)
|
|
|
|
|
|
def check_permissions(self):
|
|
|
if not self.repo_name:
|
|
|
self.repo_name = get_repo_slug(request)
|
|
|
|
|
|
try:
|
|
|
self.user_perms = set([self.user_perms['repositories']\
|
|
|
[self.repo_name]])
|
|
|
except KeyError:
|
|
|
return False
|
|
|
self.granted_for = self.repo_name
|
|
|
if self.required_perms.intersection(self.user_perms):
|
|
|
return True
|
|
|
return False
|
|
|
|
|
|
#===============================================================================
|
|
|
# SPECIAL VERSION TO HANDLE MIDDLEWARE AUTH
|
|
|
#===============================================================================
|
|
|
|
|
|
class HasPermissionAnyMiddleware(object):
|
|
|
def __init__(self, *perms):
|
|
|
self.required_perms = set(perms)
|
|
|
|
|
|
def __call__(self, user, repo_name):
|
|
|
usr = AuthUser(user.user_id)
|
|
|
try:
|
|
|
self.user_perms = set([usr.permissions['repositories'][repo_name]])
|
|
|
except:
|
|
|
self.user_perms = set()
|
|
|
self.granted_for = ''
|
|
|
self.username = user.username
|
|
|
self.repo_name = repo_name
|
|
|
return self.check_permissions()
|
|
|
|
|
|
def check_permissions(self):
|
|
|
log.debug('checking mercurial protocol '
|
|
|
'permissions %s for user:%s repository:%s', self.user_perms,
|
|
|
self.username, self.repo_name)
|
|
|
if self.required_perms.intersection(self.user_perms):
|
|
|
log.debug('permission granted')
|
|
|
return True
|
|
|
log.debug('permission denied')
|
|
|
return False
|
|
|
|
