annotate rhodecode/lib/auth.py @ 749:fcd4fb51526e beta

added debug message for ldap auth
author Marcin Kuzminski <marcin@python-works.com>
date Wed, 24 Nov 2010 03:32:53 +0100
parents 88338675a0f7
children 56c2850a5b5f
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1 #!/usr/bin/env python
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2 # encoding: utf-8
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3 # authentication and permission libraries
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4 # Copyright (C) 2009-2010 Marcin Kuzminski <marcin@python-works.com>
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5 #
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6 # This program is free software; you can redistribute it and/or
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7 # modify it under the terms of the GNU General Public License
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8 # as published by the Free Software Foundation; version 2
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9 # of the License or (at your opinion) any later version of the license.
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10 #
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11 # This program is distributed in the hope that it will be useful,
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12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 # GNU General Public License for more details.
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15 #
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16 # You should have received a copy of the GNU General Public License
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17 # along with this program; if not, write to the Free Software
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18 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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19 # MA 02110-1301, USA.
381
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20 """
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21 Created on April 4, 2010
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22
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23 @author: marcink
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24 """
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25 from pylons import config, session, url, request
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26 from pylons.controllers.util import abort, redirect
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27 from rhodecode.lib.exceptions import *
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28 from rhodecode.lib.utils import get_repo_slug
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29 from rhodecode.lib.auth_ldap import AuthLdap
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30 from rhodecode.model import meta
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31 from rhodecode.model.user import UserModel
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32 from rhodecode.model.caching_query import FromCache
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33 from rhodecode.model.db import User, RepoToPerm, Repository, Permission, \
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34 UserToPerm
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35 import bcrypt
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36 from decorator import decorator
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37 import logging
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38 import random
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39 import traceback
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40
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41 log = logging.getLogger(__name__)
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42
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43 class PasswordGenerator(object):
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44 """This is a simple class for generating password from
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45 different sets of characters
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46 usage:
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47 passwd_gen = PasswordGenerator()
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48 #print 8-letter password containing only big and small letters of alphabet
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49 print passwd_gen.gen_password(8, passwd_gen.ALPHABETS_BIG_SMALL)
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50 """
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51 ALPHABETS_NUM = r'''1234567890'''#[0]
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52 ALPHABETS_SMALL = r'''qwertyuiopasdfghjklzxcvbnm'''#[1]
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53 ALPHABETS_BIG = r'''QWERTYUIOPASDFGHJKLZXCVBNM'''#[2]
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54 ALPHABETS_SPECIAL = r'''`-=[]\;',./~!@#$%^&*()_+{}|:"<>?''' #[3]
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55 ALPHABETS_FULL = ALPHABETS_BIG + ALPHABETS_SMALL + ALPHABETS_NUM + ALPHABETS_SPECIAL#[4]
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56 ALPHABETS_ALPHANUM = ALPHABETS_BIG + ALPHABETS_SMALL + ALPHABETS_NUM#[5]
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57 ALPHABETS_BIG_SMALL = ALPHABETS_BIG + ALPHABETS_SMALL
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58 ALPHABETS_ALPHANUM_BIG = ALPHABETS_BIG + ALPHABETS_NUM#[6]
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59 ALPHABETS_ALPHANUM_SMALL = ALPHABETS_SMALL + ALPHABETS_NUM#[7]
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60
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61 def __init__(self, passwd=''):
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62 self.passwd = passwd
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63
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64 def gen_password(self, len, type):
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65 self.passwd = ''.join([random.choice(type) for _ in xrange(len)])
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66 return self.passwd
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67
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68
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69 def get_crypt_password(password):
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70 """Cryptographic function used for password hashing based on sha1
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71 :param password: password to hash
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72 """
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73 return bcrypt.hashpw(password, bcrypt.gensalt(10))
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74
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75 def check_password(password, hashed):
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76 return bcrypt.hashpw(password, hashed) == hashed
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77
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78 def authfunc(environ, username, password):
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79 """
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80 Authentication function used in Mercurial/Git/ and access control,
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81 firstly checks for db authentication then if ldap is enabled for ldap
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82 authentication, also creates ldap user if not in database
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83
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84 :param environ: needed only for using in Basic auth, can be None
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85 :param username: username
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86 :param password: password
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87 """
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88 user_model = UserModel()
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89 user = user_model.get_by_username(username, cache=False)
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90
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91 if user is not None and user.is_ldap is False:
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92 if user.active:
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93
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94 if user.username == 'default' and user.active:
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95 log.info('user %s authenticated correctly', username)
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96 return True
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97
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98 elif user.username == username and check_password(password, user.password):
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99 log.info('user %s authenticated correctly', username)
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100 return True
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101 else:
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102 log.error('user %s is disabled', username)
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103
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104
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105 else:
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106
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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 user_obj = user_model.get_by_username(username, cache=False,
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111 case_insensitive=True)
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112 if user_obj is not None and user_obj.is_ldap is False:
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113 log.debug('this user already exists as non ldap')
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114 return False
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115
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116 from rhodecode.model.settings import SettingsModel
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117 ldap_settings = SettingsModel().get_ldap_settings()
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118
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119 #======================================================================
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120 # FALLBACK TO LDAP AUTH IN ENABLE
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121 #======================================================================
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122 if ldap_settings.get('ldap_active', False):
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123
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124 kwargs = {
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125 'server':ldap_settings.get('ldap_host', ''),
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126 'base_dn':ldap_settings.get('ldap_base_dn', ''),
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127 'port':ldap_settings.get('ldap_port'),
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128 'bind_dn':ldap_settings.get('ldap_dn_user'),
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129 'bind_pass':ldap_settings.get('ldap_dn_pass'),
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130 'use_ldaps':ldap_settings.get('ldap_ldaps'),
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131 'ldap_version':3,
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132 }
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133 log.debug('Checking for ldap authentication')
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134 try:
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135 aldap = AuthLdap(**kwargs)
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136 res = aldap.authenticate_ldap(username, password)
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137
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138 authenticated = res[1]['uid'][0] == username
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139
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140 if authenticated and user_model.create_ldap(username, password):
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141 log.info('created new ldap user')
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142
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143 return authenticated
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144 except (LdapUsernameError, LdapPasswordError):
705
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145 return False
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146 except:
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147 log.error(traceback.format_exc())
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148 return False
41
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149 return False
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150
190
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151 class AuthUser(object):
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152 """
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153 A simple object that handles a mercurial username for authentication
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154 """
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155 def __init__(self):
316
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156 self.username = 'None'
355
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157 self.name = ''
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158 self.lastname = ''
404
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159 self.email = ''
316
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160 self.user_id = None
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161 self.is_authenticated = False
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162 self.is_admin = False
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163 self.permissions = {}
239
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164
673
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165 def __repr__(self):
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166 return "<AuthUser('id:%s:%s')>" % (self.user_id, self.username)
239
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167
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168 def set_available_permissions(config):
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169 """
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170 This function will propagate pylons globals with all available defined
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171 permission given in db. We don't wannt to check each time from db for new
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172 permissions since adding a new permission also requires application restart
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173 ie. to decorate new views with the newly created permission
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174 :param config:
239
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175 """
316
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176 log.info('getting information about all available permissions')
350
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177 try:
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178 sa = meta.Session()
350
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179 all_perms = sa.query(Permission).all()
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180 except:
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181 pass
350
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182 finally:
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183 meta.Session.remove()
673
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184
316
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185 config['available_permissions'] = [x.permission_name for x in all_perms]
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186
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187 def set_base_path(config):
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188 config['base_path'] = config['pylons.app_globals'].base_path
371
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189
673
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190
316
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191 def fill_perms(user):
367
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192 """
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193 Fills user permission attribute with permissions taken from database
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194 :param user:
367
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195 """
673
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196
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197 sa = meta.Session()
316
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198 user.permissions['repositories'] = {}
371
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199 user.permissions['global'] = set()
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200
417
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201 #===========================================================================
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202 # fetch default permissions
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203 #===========================================================================
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204 default_user = UserModel().get_by_username('default', cache=True)
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205
423
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206 default_perms = sa.query(RepoToPerm, Repository, Permission)\
399
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207 .join((Repository, RepoToPerm.repository_id == Repository.repo_id))\
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208 .join((Permission, RepoToPerm.permission_id == Permission.permission_id))\
609
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209 .filter(RepoToPerm.user == default_user).all()
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210
316
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211 if user.is_admin:
417
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212 #=======================================================================
423
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213 # #admin have all default rights set to admin
417
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214 #=======================================================================
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215 user.permissions['global'].add('hg.admin')
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216
316
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217 for perm in default_perms:
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218 p = 'repository.admin'
399
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219 user.permissions['repositories'][perm.RepoToPerm.repository.repo_name] = p
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220
316
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221 else:
417
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222 #=======================================================================
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223 # set default permissions
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224 #=======================================================================
673
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225
417
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226 #default global
423
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227 default_global_perms = sa.query(UserToPerm)\
741
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228 .filter(UserToPerm.user == sa.query(User)\
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229 .filter(User.username == 'default').one())
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230
423
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231 for perm in default_global_perms:
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232 user.permissions['global'].add(perm.permission.permission_name)
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233
417
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234 #default repositories
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235 for perm in default_perms:
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236 if perm.Repository.private and not perm.Repository.user_id == user.user_id:
316
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237 #disable defaults for private repos,
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238 p = 'repository.none'
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239 elif perm.Repository.user_id == user.user_id:
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240 #set admin if owner
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241 p = 'repository.admin'
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242 else:
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243 p = perm.Permission.permission_name
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244
399
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245 user.permissions['repositories'][perm.RepoToPerm.repository.repo_name] = p
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246
417
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247 #=======================================================================
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248 # #overwrite default with user permissions if any
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249 #=======================================================================
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250 user_perms = sa.query(RepoToPerm, Permission, Repository)\
399
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251 .join((Repository, RepoToPerm.repository_id == Repository.repo_id))\
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252 .join((Permission, RepoToPerm.permission_id == Permission.permission_id))\
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253 .filter(RepoToPerm.user_id == user.user_id).all()
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254
316
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255 for perm in user_perms:
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256 if perm.Repository.user_id == user.user_id:#set admin if owner
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257 p = 'repository.admin'
316
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258 else:
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259 p = perm.Permission.permission_name
399
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260 user.permissions['repositories'][perm.RepoToPerm.repository.repo_name] = p
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261 meta.Session.remove()
316
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262 return user
673
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263
299
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264 def get_user(session):
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265 """
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266 Gets user from session, and wraps permissions into user
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267 :param session:
299
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268 """
548
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269 user = session.get('rhodecode_user', AuthUser())
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270 #if the user is not logged in we check for anonymous access
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271 #if user is logged and it's a default user check if we still have anonymous
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272 #access enabled
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273 if user.user_id is None or user.username == 'default':
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274 anonymous_user = UserModel().get_by_username('default', cache=True)
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275 if anonymous_user.active is True:
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276 #then we set this user is logged in
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277 user.is_authenticated = True
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278 user.user_id = anonymous_user.user_id
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279 else:
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280 user.is_authenticated = False
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281
299
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282 if user.is_authenticated:
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283 user = UserModel().fill_data(user)
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284
412
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285 user = fill_perms(user)
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286 session['rhodecode_user'] = user
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287 session.save()
299
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288 return user
673
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289
190
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290 #===============================================================================
316
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291 # CHECK DECORATORS
190
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292 #===============================================================================
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293 class LoginRequired(object):
377
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294 """Must be logged in to execute this function else redirect to login page"""
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295
190
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296 def __call__(self, func):
377
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297 return decorator(self.__wrapper, func)
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298
377
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299 def __wrapper(self, func, *fargs, **fkwargs):
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300 user = session.get('rhodecode_user', AuthUser())
377
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301 log.debug('Checking login required for user:%s', user.username)
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302 if user.is_authenticated:
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303 log.debug('user %s is authenticated', user.username)
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304 return func(*fargs, **fkwargs)
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305 else:
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306 log.warn('user %s not authenticated', user.username)
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307
508
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308 p = ''
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309 if request.environ.get('SCRIPT_NAME') != '/':
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310 p += request.environ.get('SCRIPT_NAME')
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311
508
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312 p += request.environ.get('PATH_INFO')
437
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313 if request.environ.get('QUERY_STRING'):
474
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314 p += '?' + request.environ.get('QUERY_STRING')
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315
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316 log.debug('redirecting to login page with %s', p)
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317 return redirect(url('login_home', came_from=p))
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318
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319 class PermsDecorator(object):
377
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320 """Base class for decorators"""
673
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321
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322 def __init__(self, *required_perms):
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323 available_perms = config['available_permissions']
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324 for perm in required_perms:
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325 if perm not in available_perms:
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326 raise Exception("'%s' permission is not defined" % perm)
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327 self.required_perms = set(required_perms)
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328 self.user_perms = None
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329
316
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330 def __call__(self, func):
377
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331 return decorator(self.__wrapper, func)
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332
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333
377
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334 def __wrapper(self, func, *fargs, **fkwargs):
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335 # _wrapper.__name__ = func.__name__
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336 # _wrapper.__dict__.update(func.__dict__)
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337 # _wrapper.__doc__ = func.__doc__
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338 self.user = session.get('rhodecode_user', AuthUser())
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339 self.user_perms = self.user.permissions
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340 log.debug('checking %s permissions %s for %s %s',
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341 self.__class__.__name__, self.required_perms, func.__name__,
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342 self.user)
377
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343
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344 if self.check_permissions():
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345 log.debug('Permission granted for %s %s', func.__name__, self.user)
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346
377
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347 return func(*fargs, **fkwargs)
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348
377
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349 else:
673
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350 log.warning('Permission denied for %s %s', func.__name__, self.user)
377
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351 #redirect with forbidden ret code
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352 return abort(403)
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353
673
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354
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355
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356 def check_permissions(self):
377
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357 """Dummy function for overriding"""
239
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358 raise Exception('You have to write this function in child class')
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359
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360 class HasPermissionAllDecorator(PermsDecorator):
377
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361 """Checks for access permission for all given predicates. All of them
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362 have to be meet in order to fulfill the request
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363 """
673
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364
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365 def check_permissions(self):
339
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366 if self.required_perms.issubset(self.user_perms.get('global')):
239
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367 return True
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368 return False
673
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369
239
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370
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371 class HasPermissionAnyDecorator(PermsDecorator):
377
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372 """Checks for access permission for any of given predicates. In order to
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373 fulfill the request any of predicates must be meet
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374 """
673
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375
239
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376 def check_permissions(self):
339
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377 if self.required_perms.intersection(self.user_perms.get('global')):
316
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378 return True
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379 return False
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380
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381 class HasRepoPermissionAllDecorator(PermsDecorator):
377
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382 """Checks for access permission for all given predicates for specific
316
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383 repository. All of them have to be meet in order to fulfill the request
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384 """
673
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385
316
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386 def check_permissions(self):
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387 repo_name = get_repo_slug(request)
339
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388 try:
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389 user_perms = set([self.user_perms['repositories'][repo_name]])
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390 except KeyError:
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391 return False
316
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392 if self.required_perms.issubset(user_perms):
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393 return True
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394 return False
673
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395
316
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396
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397 class HasRepoPermissionAnyDecorator(PermsDecorator):
377
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398 """Checks for access permission for any of given predicates for specific
316
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399 repository. In order to fulfill the request any of predicates must be meet
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400 """
673
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401
316
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402 def check_permissions(self):
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403 repo_name = get_repo_slug(request)
673
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404
339
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405 try:
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406 user_perms = set([self.user_perms['repositories'][repo_name]])
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407 except KeyError:
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408 return False
316
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409 if self.required_perms.intersection(user_perms):
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410 return True
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411 return False
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412 #===============================================================================
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413 # CHECK FUNCTIONS
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414 #===============================================================================
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415
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416 class PermsFunction(object):
377
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417 """Base function for other check functions"""
673
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418
316
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419 def __init__(self, *perms):
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420 available_perms = config['available_permissions']
673
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421
316
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422 for perm in perms:
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423 if perm not in available_perms:
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424 raise Exception("'%s' permission in not defined" % perm)
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425 self.required_perms = set(perms)
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426 self.user_perms = None
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427 self.granted_for = ''
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428 self.repo_name = None
673
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429
316
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430 def __call__(self, check_Location=''):
548
b75b77ef649d renamed hg_app to rhodecode
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diff changeset
431 user = session.get('rhodecode_user', False)
333
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432 if not user:
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433 return False
316
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434 self.user_perms = user.permissions
673
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435 self.granted_for = user.username
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436 log.debug('checking %s %s %s', self.__class__.__name__,
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437 self.required_perms, user)
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438
316
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439 if self.check_permissions():
673
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440 log.debug('Permission granted for %s @ %s %s', self.granted_for,
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441 check_Location, user)
316
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442 return True
673
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443
316
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444 else:
673
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445 log.warning('Permission denied for %s @ %s %s', self.granted_for,
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446 check_Location, user)
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447 return False
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448
316
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449 def check_permissions(self):
377
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450 """Dummy function for overriding"""
316
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451 raise Exception('You have to write this function in child class')
673
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452
316
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453 class HasPermissionAll(PermsFunction):
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454 def check_permissions(self):
339
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455 if self.required_perms.issubset(self.user_perms.get('global')):
316
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456 return True
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457 return False
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diff changeset
458
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459 class HasPermissionAny(PermsFunction):
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460 def check_permissions(self):
339
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diff changeset
461 if self.required_perms.intersection(self.user_perms.get('global')):
316
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462 return True
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463 return False
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diff changeset
464
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465 class HasRepoPermissionAll(PermsFunction):
673
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466
316
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467 def __call__(self, repo_name=None, check_Location=''):
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468 self.repo_name = repo_name
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diff changeset
469 return super(HasRepoPermissionAll, self).__call__(check_Location)
673
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diff changeset
470
316
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diff changeset
471 def check_permissions(self):
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diff changeset
472 if not self.repo_name:
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diff changeset
473 self.repo_name = get_repo_slug(request)
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diff changeset
474
339
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diff changeset
475 try:
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diff changeset
476 self.user_perms = set([self.user_perms['repositories']\
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diff changeset
477 [self.repo_name]])
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diff changeset
478 except KeyError:
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diff changeset
479 return False
673
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480 self.granted_for = self.repo_name
316
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diff changeset
481 if self.required_perms.issubset(self.user_perms):
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482 return True
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483 return False
673
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484
316
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diff changeset
485 class HasRepoPermissionAny(PermsFunction):
673
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486
316
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diff changeset
487 def __call__(self, repo_name=None, check_Location=''):
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diff changeset
488 self.repo_name = repo_name
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diff changeset
489 return super(HasRepoPermissionAny, self).__call__(check_Location)
673
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490
316
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491 def check_permissions(self):
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diff changeset
492 if not self.repo_name:
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493 self.repo_name = get_repo_slug(request)
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diff changeset
494
339
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495 try:
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496 self.user_perms = set([self.user_perms['repositories']\
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diff changeset
497 [self.repo_name]])
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diff changeset
498 except KeyError:
5d517bbf0a0d some extra checks for auth lib
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diff changeset
499 return False
316
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diff changeset
500 self.granted_for = self.repo_name
239
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diff changeset
501 if self.required_perms.intersection(self.user_perms):
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502 return True
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503 return False
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504
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505 #===============================================================================
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506 # SPECIAL VERSION TO HANDLE MIDDLEWARE AUTH
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507 #===============================================================================
239
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508
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509 class HasPermissionAnyMiddleware(object):
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510 def __init__(self, *perms):
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511 self.required_perms = set(perms)
673
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512
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513 def __call__(self, user, repo_name):
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514 usr = AuthUser()
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515 usr.user_id = user.user_id
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516 usr.username = user.username
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517 usr.is_admin = user.admin
673
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518
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519 try:
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520 self.user_perms = set([fill_perms(usr)\
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521 .permissions['repositories'][repo_name]])
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522 except:
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523 self.user_perms = set()
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524 self.granted_for = ''
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525 self.username = user.username
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526 self.repo_name = repo_name
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527 return self.check_permissions()
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528
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529 def check_permissions(self):
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530 log.debug('checking mercurial protocol '
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531 'permissions for user:%s repository:%s',
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532 self.username, self.repo_name)
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533 if self.required_perms.intersection(self.user_perms):
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534 log.debug('permission granted')
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535 return True
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536 log.debug('permission denied')
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537 return False