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annotate rhodecode/lib/auth.py @ 705:9e9f1b919c0c beta

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implements #60, ldap configuration and authentication. fixes settings to use settings Model
author Marcin Kuzminski <marcin@python-works.com>
date Wed, 17 Nov 2010 22:00:36 +0100
parents 52da7cba88a6
children 1bb0fcdec895
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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.
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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.utils import get_repo_slug
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28 from rhodecode.lib.auth_ldap import AuthLdap, UsernameError, PasswordError
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29 from rhodecode.model import meta
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30 from rhodecode.model.user import UserModel
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31 from rhodecode.model.caching_query import FromCache
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32 from rhodecode.model.db import User, RepoToPerm, Repository, Permission, \
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33 UserToPerm
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34 import bcrypt
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35 from decorator import decorator
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36 import logging
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37 import random
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38 import traceback
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39
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40 log = logging.getLogger(__name__)
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41
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42 class PasswordGenerator(object):
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43 """This is a simple class for generating password from
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44 different sets of characters
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45 usage:
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46 passwd_gen = PasswordGenerator()
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47 #print 8-letter password containing only big and small letters of alphabet
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48 print passwd_gen.gen_password(8, passwd_gen.ALPHABETS_BIG_SMALL)
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49 """
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50 ALPHABETS_NUM = r'''1234567890'''#[0]
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51 ALPHABETS_SMALL = r'''qwertyuiopasdfghjklzxcvbnm'''#[1]
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52 ALPHABETS_BIG = r'''QWERTYUIOPASDFGHJKLZXCVBNM'''#[2]
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53 ALPHABETS_SPECIAL = r'''`-=[]\;',./~!@#$%^&*()_+{}|:"<>?''' #[3]
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54 ALPHABETS_FULL = ALPHABETS_BIG + ALPHABETS_SMALL + ALPHABETS_NUM + ALPHABETS_SPECIAL#[4]
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55 ALPHABETS_ALPHANUM = ALPHABETS_BIG + ALPHABETS_SMALL + ALPHABETS_NUM#[5]
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56 ALPHABETS_BIG_SMALL = ALPHABETS_BIG + ALPHABETS_SMALL
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57 ALPHABETS_ALPHANUM_BIG = ALPHABETS_BIG + ALPHABETS_NUM#[6]
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58 ALPHABETS_ALPHANUM_SMALL = ALPHABETS_SMALL + ALPHABETS_NUM#[7]
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59
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60 def __init__(self, passwd=''):
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61 self.passwd = passwd
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62
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63 def gen_password(self, len, type):
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64 self.passwd = ''.join([random.choice(type) for _ in xrange(len)])
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65 return self.passwd
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66
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67
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68 def get_crypt_password(password):
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69 """Cryptographic function used for password hashing based on sha1
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70 :param password: password to hash
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71 """
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72 return bcrypt.hashpw(password, bcrypt.gensalt(10))
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73
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74 def check_password(password, hashed):
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75 return bcrypt.hashpw(password, hashed) == hashed
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76
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77 def authfunc(environ, username, password):
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78 """
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79 Authentication function used in Mercurial/Git/ and access control,
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80 firstly checks for db authentication then if ldap is enabled for ldap
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81 authentication, also creates ldap user if not in database
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82
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83 :param environ: needed only for using in Basic auth, can be None
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84 :param username: username
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85 :param password: password
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86 """
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87 user_model = UserModel()
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88 user = user_model.get_by_username(username, cache=False)
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89
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90 if user is not None and user.is_ldap is False:
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91 if user.active:
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92
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93 if user.username == 'default' and user.active:
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94 log.info('user %s authenticated correctly', username)
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95 return True
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96
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97 elif user.username == username and check_password(password, user.password):
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98 log.info('user %s authenticated correctly', username)
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99 return True
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100 else:
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101 log.error('user %s is disabled', username)
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102
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103
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104 else:
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105 from rhodecode.model.settings import SettingsModel
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106 ldap_settings = SettingsModel().get_ldap_settings()
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107
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108 #======================================================================
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109 # FALLBACK TO LDAP AUTH IN ENABLE
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110 #======================================================================
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111 if ldap_settings.get('ldap_active', False):
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112 kwargs = {
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113 'server':ldap_settings.get('ldap_host', ''),
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114 'base_dn':ldap_settings.get('ldap_base_dn', ''),
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115 'port':ldap_settings.get('ldap_port'),
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116 'bind_dn':ldap_settings.get('ldap_dn_user'),
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117 'bind_pass':ldap_settings.get('ldap_dn_pass'),
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118 'use_ldaps':ldap_settings.get('ldap_ldaps'),
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119 'ldap_version':3,
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120 }
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121 log.debug('Checking for ldap authentication')
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122 try:
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123 aldap = AuthLdap(**kwargs)
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124 res = aldap.authenticate_ldap(username, password)
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125
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126 authenticated = res[1]['uid'][0] == username
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127
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128 if authenticated and user_model.create_ldap(username, password):
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129 log.info('created new ldap user')
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130
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131 return authenticated
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132 except (UsernameError, PasswordError):
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133 return False
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134 except:
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135 log.error(traceback.format_exc())
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136 return False
41
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137 return False
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138
190
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139 class AuthUser(object):
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140 """
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141 A simple object that handles a mercurial username for authentication
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142 """
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143 def __init__(self):
316
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144 self.username = 'None'
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145 self.name = ''
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146 self.lastname = ''
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147 self.email = ''
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148 self.user_id = None
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149 self.is_authenticated = False
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150 self.is_admin = False
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151 self.permissions = {}
239
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152
673
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153 def __repr__(self):
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154 return "<AuthUser('id:%s:%s')>" % (self.user_id, self.username)
239
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155
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156 def set_available_permissions(config):
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157 """
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158 This function will propagate pylons globals with all available defined
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159 permission given in db. We don't wannt to check each time from db for new
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160 permissions since adding a new permission also requires application restart
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161 ie. to decorate new views with the newly created permission
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162 :param config:
239
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163 """
316
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164 log.info('getting information about all available permissions')
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165 try:
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166 sa = meta.Session()
350
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167 all_perms = sa.query(Permission).all()
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168 except:
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169 pass
350
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170 finally:
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171 meta.Session.remove()
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172
316
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173 config['available_permissions'] = [x.permission_name for x in all_perms]
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174
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175 def set_base_path(config):
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176 config['base_path'] = config['pylons.app_globals'].base_path
371
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177
673
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178
316
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179 def fill_perms(user):
367
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180 """
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181 Fills user permission attribute with permissions taken from database
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182 :param user:
367
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183 """
673
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184
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185 sa = meta.Session()
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186 user.permissions['repositories'] = {}
371
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187 user.permissions['global'] = set()
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188
417
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189 #===========================================================================
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190 # fetch default permissions
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191 #===========================================================================
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192 default_user = UserModel().get_by_username('default', cache=True)
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193
423
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194 default_perms = sa.query(RepoToPerm, Repository, Permission)\
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195 .join((Repository, RepoToPerm.repository_id == Repository.repo_id))\
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196 .join((Permission, RepoToPerm.permission_id == Permission.permission_id))\
609
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197 .filter(RepoToPerm.user == default_user).all()
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198
316
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199 if user.is_admin:
417
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200 #=======================================================================
423
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201 # #admin have all default rights set to admin
417
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202 #=======================================================================
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203 user.permissions['global'].add('hg.admin')
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204
316
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205 for perm in default_perms:
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206 p = 'repository.admin'
399
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207 user.permissions['repositories'][perm.RepoToPerm.repository.repo_name] = p
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208
316
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209 else:
417
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210 #=======================================================================
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211 # set default permissions
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212 #=======================================================================
673
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213
417
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214 #default global
423
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215 default_global_perms = sa.query(UserToPerm)\
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216 .filter(UserToPerm.user == sa.query(User).filter(User.username ==
423
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217 'default').one())
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218
423
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219 for perm in default_global_perms:
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220 user.permissions['global'].add(perm.permission.permission_name)
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221
417
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222 #default repositories
316
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223 for perm in default_perms:
380
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224 if perm.Repository.private and not perm.Repository.user_id == user.user_id:
316
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225 #disable defaults for private repos,
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226 p = 'repository.none'
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227 elif perm.Repository.user_id == user.user_id:
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228 #set admin if owner
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229 p = 'repository.admin'
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230 else:
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231 p = perm.Permission.permission_name
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232
399
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233 user.permissions['repositories'][perm.RepoToPerm.repository.repo_name] = p
673
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234
417
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235 #=======================================================================
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236 # #overwrite default with user permissions if any
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237 #=======================================================================
423
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238 user_perms = sa.query(RepoToPerm, Permission, Repository)\
399
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239 .join((Repository, RepoToPerm.repository_id == Repository.repo_id))\
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240 .join((Permission, RepoToPerm.permission_id == Permission.permission_id))\
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241 .filter(RepoToPerm.user_id == user.user_id).all()
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242
316
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243 for perm in user_perms:
417
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244 if perm.Repository.user_id == user.user_id:#set admin if owner
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245 p = 'repository.admin'
316
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246 else:
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247 p = perm.Permission.permission_name
399
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248 user.permissions['repositories'][perm.RepoToPerm.repository.repo_name] = p
673
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249 meta.Session.remove()
316
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diff changeset
250 return user
673
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diff changeset
251
299
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252 def get_user(session):
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253 """
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diff changeset
254 Gets user from session, and wraps permissions into user
604
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255 :param session:
299
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256 """
548
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257 user = session.get('rhodecode_user', AuthUser())
673
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258 #if the user is not logged in we check for anonymous access
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259 #if user is logged and it's a default user check if we still have anonymous
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260 #access enabled
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261 if user.user_id is None or user.username == 'default':
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262 anonymous_user = UserModel().get_by_username('default', cache=True)
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263 if anonymous_user.active is True:
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264 #then we set this user is logged in
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265 user.is_authenticated = True
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266 user.user_id = anonymous_user.user_id
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267 else:
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268 user.is_authenticated = False
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269
299
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270 if user.is_authenticated:
673
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271 user = UserModel().fill_data(user)
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272
412
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273 user = fill_perms(user)
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274 session['rhodecode_user'] = user
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275 session.save()
299
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276 return user
673
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277
190
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278 #===============================================================================
316
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279 # CHECK DECORATORS
190
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280 #===============================================================================
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281 class LoginRequired(object):
377
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282 """Must be logged in to execute this function else redirect to login page"""
673
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283
190
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284 def __call__(self, func):
377
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285 return decorator(self.__wrapper, func)
673
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286
377
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287 def __wrapper(self, func, *fargs, **fkwargs):
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288 user = session.get('rhodecode_user', AuthUser())
377
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289 log.debug('Checking login required for user:%s', user.username)
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290 if user.is_authenticated:
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291 log.debug('user %s is authenticated', user.username)
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292 return func(*fargs, **fkwargs)
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293 else:
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294 log.warn('user %s not authenticated', user.username)
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295
508
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296 p = ''
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297 if request.environ.get('SCRIPT_NAME') != '/':
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298 p += request.environ.get('SCRIPT_NAME')
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299
508
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300 p += request.environ.get('PATH_INFO')
437
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301 if request.environ.get('QUERY_STRING'):
474
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302 p += '?' + request.environ.get('QUERY_STRING')
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303
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304 log.debug('redirecting to login page with %s', p)
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305 return redirect(url('login_home', came_from=p))
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306
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307 class PermsDecorator(object):
377
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308 """Base class for decorators"""
673
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309
316
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310 def __init__(self, *required_perms):
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311 available_perms = config['available_permissions']
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312 for perm in required_perms:
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313 if perm not in available_perms:
316
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314 raise Exception("'%s' permission is not defined" % perm)
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315 self.required_perms = set(required_perms)
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316 self.user_perms = None
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317
316
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318 def __call__(self, func):
377
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319 return decorator(self.__wrapper, func)
673
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320
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321
377
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322 def __wrapper(self, func, *fargs, **fkwargs):
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323 # _wrapper.__name__ = func.__name__
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324 # _wrapper.__dict__.update(func.__dict__)
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325 # _wrapper.__doc__ = func.__doc__
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326 self.user = session.get('rhodecode_user', AuthUser())
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327 self.user_perms = self.user.permissions
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328 log.debug('checking %s permissions %s for %s %s',
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329 self.__class__.__name__, self.required_perms, func.__name__,
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330 self.user)
377
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331
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332 if self.check_permissions():
673
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333 log.debug('Permission granted for %s %s', func.__name__, self.user)
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334
377
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335 return func(*fargs, **fkwargs)
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336
377
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337 else:
673
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338 log.warning('Permission denied for %s %s', func.__name__, self.user)
377
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339 #redirect with forbidden ret code
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340 return abort(403)
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341
673
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342
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343
239
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344 def check_permissions(self):
377
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345 """Dummy function for overriding"""
239
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346 raise Exception('You have to write this function in child class')
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347
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348 class HasPermissionAllDecorator(PermsDecorator):
377
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349 """Checks for access permission for all given predicates. All of them
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350 have to be meet in order to fulfill the request
239
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351 """
673
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352
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353 def check_permissions(self):
339
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354 if self.required_perms.issubset(self.user_perms.get('global')):
239
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355 return True
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356 return False
673
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357
239
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358
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359 class HasPermissionAnyDecorator(PermsDecorator):
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360 """Checks for access permission for any of given predicates. In order to
239
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361 fulfill the request any of predicates must be meet
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362 """
673
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363
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364 def check_permissions(self):
339
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365 if self.required_perms.intersection(self.user_perms.get('global')):
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366 return True
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367 return False
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368
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369 class HasRepoPermissionAllDecorator(PermsDecorator):
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370 """Checks for access permission for all given predicates for specific
316
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371 repository. All of them have to be meet in order to fulfill the request
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372 """
673
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373
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374 def check_permissions(self):
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375 repo_name = get_repo_slug(request)
339
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376 try:
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377 user_perms = set([self.user_perms['repositories'][repo_name]])
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378 except KeyError:
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379 return False
316
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380 if self.required_perms.issubset(user_perms):
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381 return True
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382 return False
673
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383
316
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384
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385 class HasRepoPermissionAnyDecorator(PermsDecorator):
377
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386 """Checks for access permission for any of given predicates for specific
316
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387 repository. In order to fulfill the request any of predicates must be meet
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388 """
673
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389
316
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390 def check_permissions(self):
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391 repo_name = get_repo_slug(request)
673
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392
339
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393 try:
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394 user_perms = set([self.user_perms['repositories'][repo_name]])
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395 except KeyError:
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396 return False
316
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397 if self.required_perms.intersection(user_perms):
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398 return True
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399 return False
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400 #===============================================================================
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401 # CHECK FUNCTIONS
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402 #===============================================================================
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403
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404 class PermsFunction(object):
377
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405 """Base function for other check functions"""
673
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406
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407 def __init__(self, *perms):
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408 available_perms = config['available_permissions']
673
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409
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410 for perm in perms:
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411 if perm not in available_perms:
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412 raise Exception("'%s' permission in not defined" % perm)
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413 self.required_perms = set(perms)
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414 self.user_perms = None
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415 self.granted_for = ''
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416 self.repo_name = None
673
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417
316
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418 def __call__(self, check_Location=''):
548
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419 user = session.get('rhodecode_user', False)
333
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420 if not user:
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421 return False
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422 self.user_perms = user.permissions
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423 self.granted_for = user.username
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424 log.debug('checking %s %s %s', self.__class__.__name__,
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425 self.required_perms, user)
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426
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427 if self.check_permissions():
673
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428 log.debug('Permission granted for %s @ %s %s', self.granted_for,
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429 check_Location, user)
316
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430 return True
673
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431
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432 else:
673
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433 log.warning('Permission denied for %s @ %s %s', self.granted_for,
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434 check_Location, user)
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435 return False
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436
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437 def check_permissions(self):
377
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438 """Dummy function for overriding"""
316
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439 raise Exception('You have to write this function in child class')
673
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440
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441 class HasPermissionAll(PermsFunction):
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442 def check_permissions(self):
339
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443 if self.required_perms.issubset(self.user_perms.get('global')):
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444 return True
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445 return False
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446
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447 class HasPermissionAny(PermsFunction):
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448 def check_permissions(self):
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449 if self.required_perms.intersection(self.user_perms.get('global')):
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450 return True
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451 return False
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452
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453 class HasRepoPermissionAll(PermsFunction):
673
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454
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455 def __call__(self, repo_name=None, check_Location=''):
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456 self.repo_name = repo_name
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457 return super(HasRepoPermissionAll, self).__call__(check_Location)
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458
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459 def check_permissions(self):
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460 if not self.repo_name:
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461 self.repo_name = get_repo_slug(request)
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462
339
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463 try:
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464 self.user_perms = set([self.user_perms['repositories']\
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465 [self.repo_name]])
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466 except KeyError:
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467 return False
673
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468 self.granted_for = self.repo_name
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469 if self.required_perms.issubset(self.user_perms):
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470 return True
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471 return False
673
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472
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473 class HasRepoPermissionAny(PermsFunction):
673
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474
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475 def __call__(self, repo_name=None, check_Location=''):
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476 self.repo_name = repo_name
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477 return super(HasRepoPermissionAny, self).__call__(check_Location)
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478
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479 def check_permissions(self):
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480 if not self.repo_name:
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481 self.repo_name = get_repo_slug(request)
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482
339
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483 try:
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484 self.user_perms = set([self.user_perms['repositories']\
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485 [self.repo_name]])
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486 except KeyError:
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487 return False
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488 self.granted_for = self.repo_name
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489 if self.required_perms.intersection(self.user_perms):
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490 return True
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491 return False
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492
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493 #===============================================================================
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494 # SPECIAL VERSION TO HANDLE MIDDLEWARE AUTH
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495 #===============================================================================
239
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496
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diff changeset
497 class HasPermissionAnyMiddleware(object):
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498 def __init__(self, *perms):
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499 self.required_perms = set(perms)
673
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500
316
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501 def __call__(self, user, repo_name):
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502 usr = AuthUser()
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503 usr.user_id = user.user_id
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504 usr.username = user.username
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505 usr.is_admin = user.admin
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506
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507 try:
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508 self.user_perms = set([fill_perms(usr)\
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509 .permissions['repositories'][repo_name]])
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510 except:
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511 self.user_perms = set()
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512 self.granted_for = ''
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513 self.username = user.username
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514 self.repo_name = repo_name
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515 return self.check_permissions()
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516
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517 def check_permissions(self):
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518 log.debug('checking mercurial protocol '
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519 'permissions for user:%s repository:%s',
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520 self.username, self.repo_name)
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521 if self.required_perms.intersection(self.user_perms):
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522 log.debug('permission granted')
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523 return True
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524 log.debug('permission denied')
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525 return False