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annotate rhodecode/lib/auth.py @ 741:54684e071457 beta

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fixes issue #78, ldap makes user validation caseInsensitive and fixed validators to check for case insensitive values.
author Marcin Kuzminski <marcin@python-works.com>
date Tue, 23 Nov 2010 12:58:45 +0100
parents 1bb0fcdec895
children 1377a9d4bdb9
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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 #
252
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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
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107 #since ldap is searching in case insensitive check if this user is still
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108 #not in our system
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109 username = username.lower()
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110 if user_model.get_by_username(username, cache=False) is not None:
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111 return False
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112
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113 from rhodecode.model.settings import SettingsModel
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114 ldap_settings = SettingsModel().get_ldap_settings()
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115
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116 #======================================================================
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117 # FALLBACK TO LDAP AUTH IN ENABLE
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118 #======================================================================
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119 if ldap_settings.get('ldap_active', False):
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120
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121 kwargs = {
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122 'server':ldap_settings.get('ldap_host', ''),
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123 'base_dn':ldap_settings.get('ldap_base_dn', ''),
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124 'port':ldap_settings.get('ldap_port'),
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125 'bind_dn':ldap_settings.get('ldap_dn_user'),
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126 'bind_pass':ldap_settings.get('ldap_dn_pass'),
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127 'use_ldaps':ldap_settings.get('ldap_ldaps'),
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128 'ldap_version':3,
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129 }
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130 log.debug('Checking for ldap authentication')
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131 try:
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132 aldap = AuthLdap(**kwargs)
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133 res = aldap.authenticate_ldap(username, password)
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134
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135 authenticated = res[1]['uid'][0] == username
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136
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137 if authenticated and user_model.create_ldap(username, password):
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138 log.info('created new ldap user')
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139
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140 return authenticated
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141 except (LdapUsernameError, LdapPasswordError):
705
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142 return False
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143 except:
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144 log.error(traceback.format_exc())
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145 return False
41
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146 return False
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147
190
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148 class AuthUser(object):
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149 """
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150 A simple object that handles a mercurial username for authentication
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151 """
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152 def __init__(self):
316
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153 self.username = 'None'
355
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154 self.name = ''
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155 self.lastname = ''
404
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156 self.email = ''
316
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157 self.user_id = None
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158 self.is_authenticated = False
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159 self.is_admin = False
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160 self.permissions = {}
239
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161
673
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162 def __repr__(self):
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163 return "<AuthUser('id:%s:%s')>" % (self.user_id, self.username)
239
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164
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165 def set_available_permissions(config):
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166 """
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167 This function will propagate pylons globals with all available defined
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168 permission given in db. We don't wannt to check each time from db for new
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169 permissions since adding a new permission also requires application restart
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170 ie. to decorate new views with the newly created permission
604
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171 :param config:
239
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172 """
316
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173 log.info('getting information about all available permissions')
350
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174 try:
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175 sa = meta.Session()
350
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176 all_perms = sa.query(Permission).all()
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177 except:
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178 pass
350
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179 finally:
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180 meta.Session.remove()
673
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181
316
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182 config['available_permissions'] = [x.permission_name for x in all_perms]
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183
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184 def set_base_path(config):
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185 config['base_path'] = config['pylons.app_globals'].base_path
371
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186
673
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187
316
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188 def fill_perms(user):
367
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189 """
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190 Fills user permission attribute with permissions taken from database
604
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191 :param user:
367
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192 """
673
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193
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194 sa = meta.Session()
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195 user.permissions['repositories'] = {}
371
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196 user.permissions['global'] = set()
673
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197
417
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198 #===========================================================================
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199 # fetch default permissions
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200 #===========================================================================
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201 default_user = UserModel().get_by_username('default', cache=True)
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202
423
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203 default_perms = sa.query(RepoToPerm, Repository, Permission)\
399
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204 .join((Repository, RepoToPerm.repository_id == Repository.repo_id))\
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205 .join((Permission, RepoToPerm.permission_id == Permission.permission_id))\
609
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206 .filter(RepoToPerm.user == default_user).all()
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207
316
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208 if user.is_admin:
417
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209 #=======================================================================
423
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210 # #admin have all default rights set to admin
417
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211 #=======================================================================
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212 user.permissions['global'].add('hg.admin')
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213
316
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214 for perm in default_perms:
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215 p = 'repository.admin'
399
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216 user.permissions['repositories'][perm.RepoToPerm.repository.repo_name] = p
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217
316
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218 else:
417
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219 #=======================================================================
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220 # set default permissions
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221 #=======================================================================
673
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222
417
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223 #default global
423
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224 default_global_perms = sa.query(UserToPerm)\
741
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225 .filter(UserToPerm.user == sa.query(User)\
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226 .filter(User.username == 'default').one())
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227
423
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228 for perm in default_global_perms:
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229 user.permissions['global'].add(perm.permission.permission_name)
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230
417
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231 #default repositories
316
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232 for perm in default_perms:
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233 if perm.Repository.private and not perm.Repository.user_id == user.user_id:
316
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234 #disable defaults for private repos,
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235 p = 'repository.none'
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236 elif perm.Repository.user_id == user.user_id:
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237 #set admin if owner
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238 p = 'repository.admin'
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239 else:
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240 p = perm.Permission.permission_name
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241
399
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242 user.permissions['repositories'][perm.RepoToPerm.repository.repo_name] = p
673
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243
417
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244 #=======================================================================
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245 # #overwrite default with user permissions if any
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246 #=======================================================================
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247 user_perms = sa.query(RepoToPerm, Permission, Repository)\
399
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248 .join((Repository, RepoToPerm.repository_id == Repository.repo_id))\
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249 .join((Permission, RepoToPerm.permission_id == Permission.permission_id))\
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250 .filter(RepoToPerm.user_id == user.user_id).all()
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251
316
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252 for perm in user_perms:
417
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253 if perm.Repository.user_id == user.user_id:#set admin if owner
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254 p = 'repository.admin'
316
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255 else:
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256 p = perm.Permission.permission_name
399
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257 user.permissions['repositories'][perm.RepoToPerm.repository.repo_name] = p
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258 meta.Session.remove()
316
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259 return user
673
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260
299
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261 def get_user(session):
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262 """
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263 Gets user from session, and wraps permissions into user
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264 :param session:
299
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265 """
548
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266 user = session.get('rhodecode_user', AuthUser())
673
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267 #if the user is not logged in we check for anonymous access
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268 #if user is logged and it's a default user check if we still have anonymous
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269 #access enabled
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270 if user.user_id is None or user.username == 'default':
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271 anonymous_user = UserModel().get_by_username('default', cache=True)
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272 if anonymous_user.active is True:
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273 #then we set this user is logged in
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274 user.is_authenticated = True
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275 user.user_id = anonymous_user.user_id
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276 else:
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277 user.is_authenticated = False
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278
299
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279 if user.is_authenticated:
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280 user = UserModel().fill_data(user)
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281
412
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282 user = fill_perms(user)
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283 session['rhodecode_user'] = user
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284 session.save()
299
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285 return user
673
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286
190
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287 #===============================================================================
316
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288 # CHECK DECORATORS
190
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289 #===============================================================================
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290 class LoginRequired(object):
377
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291 """Must be logged in to execute this function else redirect to login page"""
673
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292
190
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293 def __call__(self, func):
377
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294 return decorator(self.__wrapper, func)
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295
377
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296 def __wrapper(self, func, *fargs, **fkwargs):
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297 user = session.get('rhodecode_user', AuthUser())
377
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298 log.debug('Checking login required for user:%s', user.username)
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299 if user.is_authenticated:
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300 log.debug('user %s is authenticated', user.username)
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301 return func(*fargs, **fkwargs)
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302 else:
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303 log.warn('user %s not authenticated', user.username)
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304
508
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305 p = ''
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306 if request.environ.get('SCRIPT_NAME') != '/':
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307 p += request.environ.get('SCRIPT_NAME')
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308
508
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309 p += request.environ.get('PATH_INFO')
437
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310 if request.environ.get('QUERY_STRING'):
474
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311 p += '?' + request.environ.get('QUERY_STRING')
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312
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313 log.debug('redirecting to login page with %s', p)
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314 return redirect(url('login_home', came_from=p))
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315
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316 class PermsDecorator(object):
377
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317 """Base class for decorators"""
673
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318
316
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319 def __init__(self, *required_perms):
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320 available_perms = config['available_permissions']
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321 for perm in required_perms:
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322 if perm not in available_perms:
316
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323 raise Exception("'%s' permission is not defined" % perm)
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324 self.required_perms = set(required_perms)
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325 self.user_perms = None
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326
316
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327 def __call__(self, func):
377
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328 return decorator(self.__wrapper, func)
673
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329
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330
377
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331 def __wrapper(self, func, *fargs, **fkwargs):
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332 # _wrapper.__name__ = func.__name__
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333 # _wrapper.__dict__.update(func.__dict__)
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334 # _wrapper.__doc__ = func.__doc__
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335 self.user = session.get('rhodecode_user', AuthUser())
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336 self.user_perms = self.user.permissions
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337 log.debug('checking %s permissions %s for %s %s',
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338 self.__class__.__name__, self.required_perms, func.__name__,
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339 self.user)
377
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340
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341 if self.check_permissions():
673
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342 log.debug('Permission granted for %s %s', func.__name__, self.user)
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343
377
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344 return func(*fargs, **fkwargs)
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345
377
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346 else:
673
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347 log.warning('Permission denied for %s %s', func.__name__, self.user)
377
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348 #redirect with forbidden ret code
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349 return abort(403)
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350
673
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351
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352
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353 def check_permissions(self):
377
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354 """Dummy function for overriding"""
239
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355 raise Exception('You have to write this function in child class')
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356
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357 class HasPermissionAllDecorator(PermsDecorator):
377
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358 """Checks for access permission for all given predicates. All of them
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359 have to be meet in order to fulfill the request
239
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360 """
673
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361
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362 def check_permissions(self):
339
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363 if self.required_perms.issubset(self.user_perms.get('global')):
239
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364 return True
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365 return False
673
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366
239
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367
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368 class HasPermissionAnyDecorator(PermsDecorator):
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369 """Checks for access permission for any of given predicates. In order to
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370 fulfill the request any of predicates must be meet
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371 """
673
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372
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373 def check_permissions(self):
339
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374 if self.required_perms.intersection(self.user_perms.get('global')):
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375 return True
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376 return False
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377
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378 class HasRepoPermissionAllDecorator(PermsDecorator):
377
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379 """Checks for access permission for all given predicates for specific
316
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380 repository. All of them have to be meet in order to fulfill the request
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381 """
673
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382
316
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383 def check_permissions(self):
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384 repo_name = get_repo_slug(request)
339
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385 try:
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386 user_perms = set([self.user_perms['repositories'][repo_name]])
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387 except KeyError:
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388 return False
316
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389 if self.required_perms.issubset(user_perms):
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390 return True
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391 return False
673
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392
316
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diff changeset
393
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394 class HasRepoPermissionAnyDecorator(PermsDecorator):
377
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395 """Checks for access permission for any of given predicates for specific
316
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396 repository. In order to fulfill the request any of predicates must be meet
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397 """
673
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398
316
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399 def check_permissions(self):
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400 repo_name = get_repo_slug(request)
673
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401
339
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402 try:
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403 user_perms = set([self.user_perms['repositories'][repo_name]])
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404 except KeyError:
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405 return False
316
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406 if self.required_perms.intersection(user_perms):
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407 return True
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408 return False
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409 #===============================================================================
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410 # CHECK FUNCTIONS
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411 #===============================================================================
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412
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413 class PermsFunction(object):
377
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414 """Base function for other check functions"""
673
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415
316
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416 def __init__(self, *perms):
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417 available_perms = config['available_permissions']
673
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418
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419 for perm in perms:
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420 if perm not in available_perms:
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421 raise Exception("'%s' permission in not defined" % perm)
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422 self.required_perms = set(perms)
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423 self.user_perms = None
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424 self.granted_for = ''
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425 self.repo_name = None
673
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426
316
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427 def __call__(self, check_Location=''):
548
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428 user = session.get('rhodecode_user', False)
333
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429 if not user:
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430 return False
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431 self.user_perms = user.permissions
673
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432 self.granted_for = user.username
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433 log.debug('checking %s %s %s', self.__class__.__name__,
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434 self.required_perms, user)
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435
316
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436 if self.check_permissions():
673
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437 log.debug('Permission granted for %s @ %s %s', self.granted_for,
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438 check_Location, user)
316
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439 return True
673
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440
316
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441 else:
673
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442 log.warning('Permission denied for %s @ %s %s', self.granted_for,
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443 check_Location, user)
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444 return False
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445
316
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446 def check_permissions(self):
377
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447 """Dummy function for overriding"""
316
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448 raise Exception('You have to write this function in child class')
673
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449
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450 class HasPermissionAll(PermsFunction):
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451 def check_permissions(self):
339
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diff changeset
452 if self.required_perms.issubset(self.user_perms.get('global')):
316
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453 return True
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454 return False
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diff changeset
455
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456 class HasPermissionAny(PermsFunction):
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457 def check_permissions(self):
339
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458 if self.required_perms.intersection(self.user_perms.get('global')):
316
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459 return True
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460 return False
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461
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462 class HasRepoPermissionAll(PermsFunction):
673
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463
316
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464 def __call__(self, repo_name=None, check_Location=''):
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465 self.repo_name = repo_name
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diff changeset
466 return super(HasRepoPermissionAll, self).__call__(check_Location)
673
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diff changeset
467
316
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468 def check_permissions(self):
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diff changeset
469 if not self.repo_name:
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470 self.repo_name = get_repo_slug(request)
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diff changeset
471
339
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diff changeset
472 try:
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473 self.user_perms = set([self.user_perms['repositories']\
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diff changeset
474 [self.repo_name]])
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diff changeset
475 except KeyError:
5d517bbf0a0d some extra checks for auth lib
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diff changeset
476 return False
673
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477 self.granted_for = self.repo_name
316
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diff changeset
478 if self.required_perms.issubset(self.user_perms):
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479 return True
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diff changeset
480 return False
673
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481
316
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482 class HasRepoPermissionAny(PermsFunction):
673
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483
316
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484 def __call__(self, repo_name=None, check_Location=''):
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485 self.repo_name = repo_name
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diff changeset
486 return super(HasRepoPermissionAny, self).__call__(check_Location)
673
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487
316
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488 def check_permissions(self):
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diff changeset
489 if not self.repo_name:
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diff changeset
490 self.repo_name = get_repo_slug(request)
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diff changeset
491
339
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492 try:
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diff changeset
493 self.user_perms = set([self.user_perms['repositories']\
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diff changeset
494 [self.repo_name]])
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diff changeset
495 except KeyError:
5d517bbf0a0d some extra checks for auth lib
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diff changeset
496 return False
316
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diff changeset
497 self.granted_for = self.repo_name
239
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diff changeset
498 if self.required_perms.intersection(self.user_perms):
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diff changeset
499 return True
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diff changeset
500 return False
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501
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502 #===============================================================================
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503 # SPECIAL VERSION TO HANDLE MIDDLEWARE AUTH
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504 #===============================================================================
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505
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506 class HasPermissionAnyMiddleware(object):
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507 def __init__(self, *perms):
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508 self.required_perms = set(perms)
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509
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510 def __call__(self, user, repo_name):
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511 usr = AuthUser()
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512 usr.user_id = user.user_id
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513 usr.username = user.username
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514 usr.is_admin = user.admin
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515
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516 try:
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517 self.user_perms = set([fill_perms(usr)\
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518 .permissions['repositories'][repo_name]])
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519 except:
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520 self.user_perms = set()
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521 self.granted_for = ''
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522 self.username = user.username
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523 self.repo_name = repo_name
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524 return self.check_permissions()
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525
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526 def check_permissions(self):
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527 log.debug('checking mercurial protocol '
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528 'permissions for user:%s repository:%s',
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529 self.username, self.repo_name)
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530 if self.required_perms.intersection(self.user_perms):
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531 log.debug('permission granted')
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532 return True
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533 log.debug('permission denied')
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534 return False