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annotate rhodecode/lib/auth.py @ 713:1bb0fcdec895 beta

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fixed #72 show warning on removal when user still is owner of existing repositories cleaned up exceptions
author Marcin Kuzminski <marcin@python-works.com>
date Thu, 18 Nov 2010 03:29:23 +0100
parents 9e9f1b919c0c
children 54684e071457
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #!/usr/bin/env python
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2 # encoding: utf-8
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3 # authentication and permission libraries
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4 # Copyright (C) 2009-2010 Marcin Kuzminski <marcin@python-works.com>
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5 #
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6 # This program is free software; you can redistribute it and/or
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7 # modify it under the terms of the GNU General Public License
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8 # as published by the Free Software Foundation; version 2
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9 # of the License or (at your opinion) any later version of the license.
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10 #
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11 # This program is distributed in the hope that it will be useful,
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12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 # GNU General Public License for more details.
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15 #
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16 # You should have received a copy of the GNU General Public License
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17 # along with this program; if not, write to the Free Software
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18 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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19 # MA 02110-1301, USA.
381
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20 """
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21 Created on April 4, 2010
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22
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23 @author: marcink
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24 """
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25 from pylons import config, session, url, request
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26 from pylons.controllers.util import abort, redirect
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27 from rhodecode.lib.exceptions import *
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28 from rhodecode.lib.utils import get_repo_slug
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29 from rhodecode.lib.auth_ldap import AuthLdap
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30 from rhodecode.model import meta
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31 from rhodecode.model.user import UserModel
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32 from rhodecode.model.caching_query import FromCache
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33 from rhodecode.model.db import User, RepoToPerm, Repository, Permission, \
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34 UserToPerm
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35 import bcrypt
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36 from decorator import decorator
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37 import logging
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38 import random
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39 import traceback
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40
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41 log = logging.getLogger(__name__)
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42
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43 class PasswordGenerator(object):
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44 """This is a simple class for generating password from
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45 different sets of characters
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46 usage:
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47 passwd_gen = PasswordGenerator()
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48 #print 8-letter password containing only big and small letters of alphabet
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49 print passwd_gen.gen_password(8, passwd_gen.ALPHABETS_BIG_SMALL)
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50 """
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51 ALPHABETS_NUM = r'''1234567890'''#[0]
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52 ALPHABETS_SMALL = r'''qwertyuiopasdfghjklzxcvbnm'''#[1]
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53 ALPHABETS_BIG = r'''QWERTYUIOPASDFGHJKLZXCVBNM'''#[2]
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54 ALPHABETS_SPECIAL = r'''`-=[]\;',./~!@#$%^&*()_+{}|:"<>?''' #[3]
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55 ALPHABETS_FULL = ALPHABETS_BIG + ALPHABETS_SMALL + ALPHABETS_NUM + ALPHABETS_SPECIAL#[4]
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56 ALPHABETS_ALPHANUM = ALPHABETS_BIG + ALPHABETS_SMALL + ALPHABETS_NUM#[5]
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57 ALPHABETS_BIG_SMALL = ALPHABETS_BIG + ALPHABETS_SMALL
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58 ALPHABETS_ALPHANUM_BIG = ALPHABETS_BIG + ALPHABETS_NUM#[6]
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59 ALPHABETS_ALPHANUM_SMALL = ALPHABETS_SMALL + ALPHABETS_NUM#[7]
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60
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61 def __init__(self, passwd=''):
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62 self.passwd = passwd
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63
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64 def gen_password(self, len, type):
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65 self.passwd = ''.join([random.choice(type) for _ in xrange(len)])
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66 return self.passwd
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67
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68
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69 def get_crypt_password(password):
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70 """Cryptographic function used for password hashing based on sha1
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71 :param password: password to hash
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72 """
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73 return bcrypt.hashpw(password, bcrypt.gensalt(10))
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74
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75 def check_password(password, hashed):
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76 return bcrypt.hashpw(password, hashed) == hashed
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77
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78 def authfunc(environ, username, password):
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79 """
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80 Authentication function used in Mercurial/Git/ and access control,
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81 firstly checks for db authentication then if ldap is enabled for ldap
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82 authentication, also creates ldap user if not in database
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83
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84 :param environ: needed only for using in Basic auth, can be None
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85 :param username: username
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86 :param password: password
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87 """
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88 user_model = UserModel()
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89 user = user_model.get_by_username(username, cache=False)
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90
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91 if user is not None and user.is_ldap is False:
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92 if user.active:
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93
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94 if user.username == 'default' and user.active:
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95 log.info('user %s authenticated correctly', username)
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96 return True
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97
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98 elif user.username == username and check_password(password, user.password):
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99 log.info('user %s authenticated correctly', username)
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100 return True
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101 else:
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102 log.error('user %s is disabled', username)
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103
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104
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105 else:
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106 from rhodecode.model.settings import SettingsModel
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107 ldap_settings = SettingsModel().get_ldap_settings()
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108
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109 #======================================================================
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110 # FALLBACK TO LDAP AUTH IN ENABLE
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111 #======================================================================
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112 if ldap_settings.get('ldap_active', False):
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113 kwargs = {
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114 'server':ldap_settings.get('ldap_host', ''),
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115 'base_dn':ldap_settings.get('ldap_base_dn', ''),
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116 'port':ldap_settings.get('ldap_port'),
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117 'bind_dn':ldap_settings.get('ldap_dn_user'),
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118 'bind_pass':ldap_settings.get('ldap_dn_pass'),
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119 'use_ldaps':ldap_settings.get('ldap_ldaps'),
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120 'ldap_version':3,
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121 }
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122 log.debug('Checking for ldap authentication')
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123 try:
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124 aldap = AuthLdap(**kwargs)
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125 res = aldap.authenticate_ldap(username, password)
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126
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127 authenticated = res[1]['uid'][0] == username
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128
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129 if authenticated and user_model.create_ldap(username, password):
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130 log.info('created new ldap user')
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131
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132 return authenticated
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133 except (LdapUsernameError, LdapPasswordError):
705
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134 return False
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135 except:
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136 log.error(traceback.format_exc())
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137 return False
41
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138 return False
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139
190
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140 class AuthUser(object):
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141 """
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142 A simple object that handles a mercurial username for authentication
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143 """
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144 def __init__(self):
316
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145 self.username = 'None'
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146 self.name = ''
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147 self.lastname = ''
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148 self.email = ''
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149 self.user_id = None
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150 self.is_authenticated = False
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151 self.is_admin = False
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152 self.permissions = {}
239
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153
673
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154 def __repr__(self):
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155 return "<AuthUser('id:%s:%s')>" % (self.user_id, self.username)
239
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156
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157 def set_available_permissions(config):
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158 """
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159 This function will propagate pylons globals with all available defined
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160 permission given in db. We don't wannt to check each time from db for new
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161 permissions since adding a new permission also requires application restart
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162 ie. to decorate new views with the newly created permission
604
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163 :param config:
239
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164 """
316
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165 log.info('getting information about all available permissions')
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166 try:
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167 sa = meta.Session()
350
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168 all_perms = sa.query(Permission).all()
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169 except:
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170 pass
350
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171 finally:
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172 meta.Session.remove()
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173
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174 config['available_permissions'] = [x.permission_name for x in all_perms]
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175
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176 def set_base_path(config):
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177 config['base_path'] = config['pylons.app_globals'].base_path
371
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178
673
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179
316
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180 def fill_perms(user):
367
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181 """
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182 Fills user permission attribute with permissions taken from database
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183 :param user:
367
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184 """
673
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185
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186 sa = meta.Session()
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187 user.permissions['repositories'] = {}
371
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188 user.permissions['global'] = set()
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189
417
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190 #===========================================================================
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191 # fetch default permissions
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192 #===========================================================================
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193 default_user = UserModel().get_by_username('default', cache=True)
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194
423
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195 default_perms = sa.query(RepoToPerm, Repository, Permission)\
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196 .join((Repository, RepoToPerm.repository_id == Repository.repo_id))\
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197 .join((Permission, RepoToPerm.permission_id == Permission.permission_id))\
609
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198 .filter(RepoToPerm.user == default_user).all()
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199
316
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200 if user.is_admin:
417
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201 #=======================================================================
423
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202 # #admin have all default rights set to admin
417
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203 #=======================================================================
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204 user.permissions['global'].add('hg.admin')
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205
316
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206 for perm in default_perms:
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207 p = 'repository.admin'
399
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208 user.permissions['repositories'][perm.RepoToPerm.repository.repo_name] = p
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209
316
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210 else:
417
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211 #=======================================================================
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212 # set default permissions
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213 #=======================================================================
673
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214
417
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215 #default global
423
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216 default_global_perms = sa.query(UserToPerm)\
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217 .filter(UserToPerm.user == sa.query(User).filter(User.username ==
423
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218 'default').one())
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219
423
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220 for perm in default_global_perms:
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221 user.permissions['global'].add(perm.permission.permission_name)
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222
417
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223 #default repositories
316
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224 for perm in default_perms:
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225 if perm.Repository.private and not perm.Repository.user_id == user.user_id:
316
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226 #disable defaults for private repos,
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227 p = 'repository.none'
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228 elif perm.Repository.user_id == user.user_id:
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229 #set admin if owner
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230 p = 'repository.admin'
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231 else:
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232 p = perm.Permission.permission_name
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233
399
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234 user.permissions['repositories'][perm.RepoToPerm.repository.repo_name] = p
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235
417
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236 #=======================================================================
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237 # #overwrite default with user permissions if any
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238 #=======================================================================
423
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239 user_perms = sa.query(RepoToPerm, Permission, Repository)\
399
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240 .join((Repository, RepoToPerm.repository_id == Repository.repo_id))\
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241 .join((Permission, RepoToPerm.permission_id == Permission.permission_id))\
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242 .filter(RepoToPerm.user_id == user.user_id).all()
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243
316
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244 for perm in user_perms:
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245 if perm.Repository.user_id == user.user_id:#set admin if owner
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246 p = 'repository.admin'
316
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247 else:
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248 p = perm.Permission.permission_name
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249 user.permissions['repositories'][perm.RepoToPerm.repository.repo_name] = p
673
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250 meta.Session.remove()
316
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diff changeset
251 return user
673
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diff changeset
252
299
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253 def get_user(session):
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254 """
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255 Gets user from session, and wraps permissions into user
604
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256 :param session:
299
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257 """
548
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258 user = session.get('rhodecode_user', AuthUser())
673
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259 #if the user is not logged in we check for anonymous access
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260 #if user is logged and it's a default user check if we still have anonymous
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261 #access enabled
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262 if user.user_id is None or user.username == 'default':
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263 anonymous_user = UserModel().get_by_username('default', cache=True)
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264 if anonymous_user.active is True:
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265 #then we set this user is logged in
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266 user.is_authenticated = True
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267 user.user_id = anonymous_user.user_id
673
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268 else:
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269 user.is_authenticated = False
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270
299
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271 if user.is_authenticated:
673
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272 user = UserModel().fill_data(user)
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273
412
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274 user = fill_perms(user)
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275 session['rhodecode_user'] = user
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276 session.save()
299
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277 return user
673
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278
190
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279 #===============================================================================
316
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280 # CHECK DECORATORS
190
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281 #===============================================================================
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282 class LoginRequired(object):
377
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283 """Must be logged in to execute this function else redirect to login page"""
673
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284
190
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285 def __call__(self, func):
377
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286 return decorator(self.__wrapper, func)
673
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287
377
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288 def __wrapper(self, func, *fargs, **fkwargs):
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289 user = session.get('rhodecode_user', AuthUser())
377
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290 log.debug('Checking login required for user:%s', user.username)
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291 if user.is_authenticated:
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292 log.debug('user %s is authenticated', user.username)
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293 return func(*fargs, **fkwargs)
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294 else:
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295 log.warn('user %s not authenticated', user.username)
673
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296
508
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297 p = ''
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298 if request.environ.get('SCRIPT_NAME') != '/':
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299 p += request.environ.get('SCRIPT_NAME')
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300
508
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301 p += request.environ.get('PATH_INFO')
437
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302 if request.environ.get('QUERY_STRING'):
474
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303 p += '?' + request.environ.get('QUERY_STRING')
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304
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305 log.debug('redirecting to login page with %s', p)
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306 return redirect(url('login_home', came_from=p))
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307
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308 class PermsDecorator(object):
377
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309 """Base class for decorators"""
673
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310
316
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311 def __init__(self, *required_perms):
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312 available_perms = config['available_permissions']
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313 for perm in required_perms:
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314 if perm not in available_perms:
316
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315 raise Exception("'%s' permission is not defined" % perm)
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316 self.required_perms = set(required_perms)
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317 self.user_perms = None
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318
316
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319 def __call__(self, func):
377
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320 return decorator(self.__wrapper, func)
673
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321
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322
377
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323 def __wrapper(self, func, *fargs, **fkwargs):
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324 # _wrapper.__name__ = func.__name__
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325 # _wrapper.__dict__.update(func.__dict__)
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326 # _wrapper.__doc__ = func.__doc__
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327 self.user = session.get('rhodecode_user', AuthUser())
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328 self.user_perms = self.user.permissions
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329 log.debug('checking %s permissions %s for %s %s',
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330 self.__class__.__name__, self.required_perms, func.__name__,
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331 self.user)
377
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332
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333 if self.check_permissions():
673
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334 log.debug('Permission granted for %s %s', func.__name__, self.user)
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335
377
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336 return func(*fargs, **fkwargs)
673
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337
377
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338 else:
673
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339 log.warning('Permission denied for %s %s', func.__name__, self.user)
377
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340 #redirect with forbidden ret code
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341 return abort(403)
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342
673
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343
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344
239
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345 def check_permissions(self):
377
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346 """Dummy function for overriding"""
239
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347 raise Exception('You have to write this function in child class')
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348
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349 class HasPermissionAllDecorator(PermsDecorator):
377
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350 """Checks for access permission for all given predicates. All of them
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351 have to be meet in order to fulfill the request
239
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352 """
673
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353
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354 def check_permissions(self):
339
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355 if self.required_perms.issubset(self.user_perms.get('global')):
239
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356 return True
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357 return False
673
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358
239
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359
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360 class HasPermissionAnyDecorator(PermsDecorator):
377
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361 """Checks for access permission for any of given predicates. In order to
239
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362 fulfill the request any of predicates must be meet
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363 """
673
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364
239
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365 def check_permissions(self):
339
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366 if self.required_perms.intersection(self.user_perms.get('global')):
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367 return True
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368 return False
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369
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370 class HasRepoPermissionAllDecorator(PermsDecorator):
377
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371 """Checks for access permission for all given predicates for specific
316
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372 repository. All of them have to be meet in order to fulfill the request
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373 """
673
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374
316
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375 def check_permissions(self):
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376 repo_name = get_repo_slug(request)
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377 try:
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378 user_perms = set([self.user_perms['repositories'][repo_name]])
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379 except KeyError:
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380 return False
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381 if self.required_perms.issubset(user_perms):
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382 return True
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383 return False
673
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384
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385
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386 class HasRepoPermissionAnyDecorator(PermsDecorator):
377
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387 """Checks for access permission for any of given predicates for specific
316
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388 repository. In order to fulfill the request any of predicates must be meet
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389 """
673
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390
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391 def check_permissions(self):
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392 repo_name = get_repo_slug(request)
673
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393
339
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394 try:
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395 user_perms = set([self.user_perms['repositories'][repo_name]])
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396 except KeyError:
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397 return False
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398 if self.required_perms.intersection(user_perms):
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399 return True
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400 return False
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401 #===============================================================================
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402 # CHECK FUNCTIONS
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403 #===============================================================================
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404
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405 class PermsFunction(object):
377
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406 """Base function for other check functions"""
673
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407
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408 def __init__(self, *perms):
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409 available_perms = config['available_permissions']
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410
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411 for perm in perms:
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412 if perm not in available_perms:
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413 raise Exception("'%s' permission in not defined" % perm)
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414 self.required_perms = set(perms)
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415 self.user_perms = None
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416 self.granted_for = ''
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417 self.repo_name = None
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418
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419 def __call__(self, check_Location=''):
548
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420 user = session.get('rhodecode_user', False)
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421 if not user:
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422 return False
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423 self.user_perms = user.permissions
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424 self.granted_for = user.username
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425 log.debug('checking %s %s %s', self.__class__.__name__,
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426 self.required_perms, user)
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427
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428 if self.check_permissions():
673
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429 log.debug('Permission granted for %s @ %s %s', self.granted_for,
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430 check_Location, user)
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431 return True
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432
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433 else:
673
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434 log.warning('Permission denied for %s @ %s %s', self.granted_for,
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435 check_Location, user)
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436 return False
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437
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438 def check_permissions(self):
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439 """Dummy function for overriding"""
316
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440 raise Exception('You have to write this function in child class')
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441
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442 class HasPermissionAll(PermsFunction):
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443 def check_permissions(self):
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444 if self.required_perms.issubset(self.user_perms.get('global')):
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445 return True
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446 return False
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447
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448 class HasPermissionAny(PermsFunction):
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449 def check_permissions(self):
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450 if self.required_perms.intersection(self.user_perms.get('global')):
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451 return True
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452 return False
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453
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454 class HasRepoPermissionAll(PermsFunction):
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455
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456 def __call__(self, repo_name=None, check_Location=''):
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457 self.repo_name = repo_name
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458 return super(HasRepoPermissionAll, self).__call__(check_Location)
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459
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460 def check_permissions(self):
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461 if not self.repo_name:
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462 self.repo_name = get_repo_slug(request)
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463
339
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464 try:
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465 self.user_perms = set([self.user_perms['repositories']\
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466 [self.repo_name]])
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467 except KeyError:
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468 return False
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469 self.granted_for = self.repo_name
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470 if self.required_perms.issubset(self.user_perms):
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471 return True
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472 return False
673
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473
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474 class HasRepoPermissionAny(PermsFunction):
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475
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476 def __call__(self, repo_name=None, check_Location=''):
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477 self.repo_name = repo_name
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478 return super(HasRepoPermissionAny, self).__call__(check_Location)
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479
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480 def check_permissions(self):
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481 if not self.repo_name:
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482 self.repo_name = get_repo_slug(request)
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483
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484 try:
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485 self.user_perms = set([self.user_perms['repositories']\
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486 [self.repo_name]])
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487 except KeyError:
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488 return False
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489 self.granted_for = self.repo_name
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490 if self.required_perms.intersection(self.user_perms):
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491 return True
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492 return False
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493
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494 #===============================================================================
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495 # SPECIAL VERSION TO HANDLE MIDDLEWARE AUTH
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496 #===============================================================================
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497
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498 class HasPermissionAnyMiddleware(object):
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499 def __init__(self, *perms):
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500 self.required_perms = set(perms)
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501
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502 def __call__(self, user, repo_name):
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503 usr = AuthUser()
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504 usr.user_id = user.user_id
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505 usr.username = user.username
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506 usr.is_admin = user.admin
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507
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508 try:
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509 self.user_perms = set([fill_perms(usr)\
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510 .permissions['repositories'][repo_name]])
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511 except:
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512 self.user_perms = set()
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513 self.granted_for = ''
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514 self.username = user.username
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515 self.repo_name = repo_name
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516 return self.check_permissions()
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517
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518 def check_permissions(self):
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519 log.debug('checking mercurial protocol '
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520 'permissions for user:%s repository:%s',
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521 self.username, self.repo_name)
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522 if self.required_perms.intersection(self.user_perms):
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523 log.debug('permission granted')
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524 return True
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525 log.debug('permission denied')
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526 return False