annotate rhodecode/lib/auth.py @ 1207:e61b7ba293db beta

changed the way of generating url for came_from
author Marcin Kuzminski <marcin@python-works.com>
date Tue, 05 Apr 2011 02:04:59 +0200
parents a671db5bdd58
children 9365a893ad4e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 # -*- coding: utf-8 -*-
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2 """
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3 rhodecode.lib.auth
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4 ~~~~~~~~~~~~~~~~~~
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5
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6 authentication and permission libraries
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7
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8 :created_on: Apr 4, 2010
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9 :copyright: (c) 2010 by marcink.
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10 :license: LICENSE_NAME, see LICENSE_FILE for more details.
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11 """
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12 # This program is free software: you can redistribute it and/or modify
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13 # it under the terms of the GNU General Public License as published by
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14 # the Free Software Foundation, either version 3 of the License, or
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15 # (at your option) any later version.
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16 #
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17 # This program is distributed in the hope that it will be useful,
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18 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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19 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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20 # GNU General Public License for more details.
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21 #
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22 # You should have received a copy of the GNU General Public License
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23 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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24
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25 import random
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26 import logging
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27 import traceback
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28 import hashlib
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29
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30 from tempfile import _RandomNameSequence
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31 from decorator import decorator
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32
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33 from pylons import config, session, url, request
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34 from pylons.controllers.util import abort, redirect
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35 from pylons.i18n.translation import _
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36
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37 from rhodecode import __platform__, PLATFORM_WIN, PLATFORM_OTHERS
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38
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39 if __platform__ in PLATFORM_WIN:
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40 from hashlib import sha256
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41 if __platform__ in PLATFORM_OTHERS:
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42 import bcrypt
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43
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44 from rhodecode.lib import str2bool
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45 from rhodecode.lib.exceptions import LdapPasswordError, LdapUsernameError
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46 from rhodecode.lib.utils import get_repo_slug
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47 from rhodecode.lib.auth_ldap import AuthLdap
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48
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49 from rhodecode.model import meta
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50 from rhodecode.model.user import UserModel
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51 from rhodecode.model.db import Permission
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53
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54 log = logging.getLogger(__name__)
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55
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56 class PasswordGenerator(object):
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57 """This is a simple class for generating password from
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58 different sets of characters
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59 usage:
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60 passwd_gen = PasswordGenerator()
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61 #print 8-letter password containing only big and small letters of alphabet
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62 print passwd_gen.gen_password(8, passwd_gen.ALPHABETS_BIG_SMALL)
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63 """
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64 ALPHABETS_NUM = r'''1234567890'''#[0]
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65 ALPHABETS_SMALL = r'''qwertyuiopasdfghjklzxcvbnm'''#[1]
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66 ALPHABETS_BIG = r'''QWERTYUIOPASDFGHJKLZXCVBNM'''#[2]
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67 ALPHABETS_SPECIAL = r'''`-=[]\;',./~!@#$%^&*()_+{}|:"<>?''' #[3]
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68 ALPHABETS_FULL = ALPHABETS_BIG + ALPHABETS_SMALL + ALPHABETS_NUM + ALPHABETS_SPECIAL#[4]
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69 ALPHABETS_ALPHANUM = ALPHABETS_BIG + ALPHABETS_SMALL + ALPHABETS_NUM#[5]
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70 ALPHABETS_BIG_SMALL = ALPHABETS_BIG + ALPHABETS_SMALL
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71 ALPHABETS_ALPHANUM_BIG = ALPHABETS_BIG + ALPHABETS_NUM#[6]
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72 ALPHABETS_ALPHANUM_SMALL = ALPHABETS_SMALL + ALPHABETS_NUM#[7]
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74 def __init__(self, passwd=''):
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75 self.passwd = passwd
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76
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77 def gen_password(self, len, type):
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78 self.passwd = ''.join([random.choice(type) for _ in xrange(len)])
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79 return self.passwd
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80
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81 class RhodeCodeCrypto(object):
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82
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83 @classmethod
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84 def hash_string(cls, str_):
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85 """
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86 Cryptographic function used for password hashing based on pybcrypt
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87 or pycrypto in windows
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88
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89 :param password: password to hash
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90 """
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91 if __platform__ in PLATFORM_WIN:
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92 return sha256(str_).hexdigest()
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93 elif __platform__ in PLATFORM_OTHERS:
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94 return bcrypt.hashpw(str_, bcrypt.gensalt(10))
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95 else:
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96 raise Exception('Unknown or unsupported platform %s' % __platform__)
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98 @classmethod
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99 def hash_check(cls, password, hashed):
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100 """
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101 Checks matching password with it's hashed value, runs different
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102 implementation based on platform it runs on
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103
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104 :param password: password
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105 :param hashed: password in hashed form
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106 """
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107
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108 if __platform__ in PLATFORM_WIN:
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109 return sha256(password).hexdigest() == hashed
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110 elif __platform__ in PLATFORM_OTHERS:
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111 return bcrypt.hashpw(password, hashed) == hashed
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112 else:
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113 raise Exception('Unknown or unsupported platform %s' % __platform__)
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114
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115
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116 def get_crypt_password(password):
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117 return RhodeCodeCrypto.hash_string(password)
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118
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119 def check_password(password, hashed):
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120 return RhodeCodeCrypto.hash_check(password, hashed)
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121
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122 def generate_api_key(username, salt=None):
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123 if salt is None:
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124 salt = _RandomNameSequence().next()
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125
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126 return hashlib.sha1(username + salt).hexdigest()
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127
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128 def authfunc(environ, username, password):
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129 """Dummy authentication function used in Mercurial/Git/ and access control,
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130
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131 :param environ: needed only for using in Basic auth
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132 """
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133 return authenticate(username, password)
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134
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135
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136 def authenticate(username, password):
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137 """Authentication function used for access control,
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138 firstly checks for db authentication then if ldap is enabled for ldap
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139 authentication, also creates ldap user if not in database
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140
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141 :param username: username
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142 :param password: password
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143 """
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144 user_model = UserModel()
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145 user = user_model.get_by_username(username, cache=False)
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146
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147 log.debug('Authenticating user using RhodeCode account')
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148 if user is not None and not user.ldap_dn:
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149 if user.active:
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150
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151 if user.username == 'default' and user.active:
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152 log.info('user %s authenticated correctly as anonymous user',
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153 username)
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154 return True
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155
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156 elif user.username == username and check_password(password, user.password):
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157 log.info('user %s authenticated correctly', username)
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158 return True
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159 else:
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160 log.warning('user %s is disabled', username)
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161
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162 else:
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163 log.debug('Regular authentication failed')
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164 user_obj = user_model.get_by_username(username, cache=False,
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165 case_insensitive=True)
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166
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167 if user_obj is not None and not user_obj.ldap_dn:
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168 log.debug('this user already exists as non ldap')
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169 return False
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170
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171 from rhodecode.model.settings import SettingsModel
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172 ldap_settings = SettingsModel().get_ldap_settings()
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173
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174 #======================================================================
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175 # FALLBACK TO LDAP AUTH IF ENABLE
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176 #======================================================================
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177 if str2bool(ldap_settings.get('ldap_active')):
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178 log.debug("Authenticating user using ldap")
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179 kwargs = {
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180 'server':ldap_settings.get('ldap_host', ''),
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181 'base_dn':ldap_settings.get('ldap_base_dn', ''),
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182 'port':ldap_settings.get('ldap_port'),
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183 'bind_dn':ldap_settings.get('ldap_dn_user'),
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184 'bind_pass':ldap_settings.get('ldap_dn_pass'),
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185 'use_ldaps':str2bool(ldap_settings.get('ldap_ldaps')),
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186 'tls_reqcert':ldap_settings.get('ldap_tls_reqcert'),
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187 'ldap_filter':ldap_settings.get('ldap_filter'),
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188 'search_scope':ldap_settings.get('ldap_search_scope'),
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189 'attr_login':ldap_settings.get('ldap_attr_login'),
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190 'ldap_version':3,
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191 }
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192 log.debug('Checking for ldap authentication')
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193 try:
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194 aldap = AuthLdap(**kwargs)
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195 (user_dn, ldap_attrs) = aldap.authenticate_ldap(username, password)
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196 log.debug('Got ldap DN response %s', user_dn)
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197
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198 user_attrs = {
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199 'name' : ldap_attrs[ldap_settings.get('ldap_attr_firstname')][0],
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200 'lastname' : ldap_attrs[ldap_settings.get('ldap_attr_lastname')][0],
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201 'email' : ldap_attrs[ldap_settings.get('ldap_attr_email')][0],
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202 }
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203
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204 if user_model.create_ldap(username, password, user_dn, user_attrs):
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205 log.info('created new ldap user %s', username)
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206
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207 return True
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208 except (LdapUsernameError, LdapPasswordError,):
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209 pass
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210 except (Exception,):
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211 log.error(traceback.format_exc())
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212 pass
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213 return False
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214
190
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215 class AuthUser(object):
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216 """
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217 A simple object that handles all attributes of user in RhodeCode
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218
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219 It does lookup based on API key,given user, or user present in session
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220 Then it fills all required information for such user. It also checks if
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221 anonymous access is enabled and if so, it returns default user as logged
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222 in
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223 """
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224
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225 def __init__(self, user_id=None, api_key=None):
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226
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227 self.user_id = user_id
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228 self.api_key = None
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229
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230 self.username = 'None'
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231 self.name = ''
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232 self.lastname = ''
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233 self.email = ''
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234 self.is_authenticated = False
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235 self.admin = False
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236 self.permissions = {}
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237 self._api_key = api_key
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238 self.propagate_data()
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239
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240
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241 def propagate_data(self):
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242 user_model = UserModel()
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243 self.anonymous_user = user_model.get_by_username('default', cache=True)
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244 if self._api_key and self._api_key != self.anonymous_user.api_key:
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245 #try go get user by api key
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246 log.debug('Auth User lookup by API KEY %s', self._api_key)
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247 user_model.fill_data(self, api_key=self._api_key)
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248 else:
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249 log.debug('Auth User lookup by USER ID %s', self.user_id)
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250 if self.user_id is not None and self.user_id != self.anonymous_user.user_id:
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251 user_model.fill_data(self, user_id=self.user_id)
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252 else:
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253 if self.anonymous_user.active is True:
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254 user_model.fill_data(self, user_id=self.anonymous_user.user_id)
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255 #then we set this user is logged in
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256 self.is_authenticated = True
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257 else:
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258 self.is_authenticated = False
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259
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260 log.debug('Auth User is now %s', self)
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261 user_model.fill_perms(self)
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262
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263 @property
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264 def is_admin(self):
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265 return self.admin
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266
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267 def __repr__(self):
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268 return "<AuthUser('id:%s:%s|%s')>" % (self.user_id, self.username,
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269 self.is_authenticated)
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270
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271 def set_authenticated(self, authenticated=True):
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272
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273 if self.user_id != self.anonymous_user.user_id:
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274 self.is_authenticated = authenticated
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275
239
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276
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277 def set_available_permissions(config):
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278 """This function will propagate pylons globals with all available defined
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279 permission given in db. We don't want to check each time from db for new
239
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280 permissions since adding a new permission also requires application restart
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281 ie. to decorate new views with the newly created permission
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282
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283 :param config: current pylons config instance
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284
239
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285 """
316
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286 log.info('getting information about all available permissions')
350
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287 try:
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288 sa = meta.Session()
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289 all_perms = sa.query(Permission).all()
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290 except:
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291 pass
350
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292 finally:
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293 meta.Session.remove()
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294
316
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295 config['available_permissions'] = [x.permission_name for x in all_perms]
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296
190
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297 #===============================================================================
316
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298 # CHECK DECORATORS
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299 #===============================================================================
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300 class LoginRequired(object):
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301 """
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302 Must be logged in to execute this function else
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303 redirect to login page
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304
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305 :param api_access: if enabled this checks only for valid auth token
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306 and grants access based on valid token
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307 """
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308
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309 def __init__(self, api_access=False):
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310 self.api_access = api_access
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311
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312 def __call__(self, func):
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313 return decorator(self.__wrapper, func)
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314
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315 def __wrapper(self, func, *fargs, **fkwargs):
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316 cls = fargs[0]
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317 user = cls.rhodecode_user
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318
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319 api_access_ok = False
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320 if self.api_access:
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321 log.debug('Checking API KEY access for %s', cls)
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322 if user.api_key == request.GET.get('api_key'):
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323 api_access_ok = True
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324 else:
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325 log.debug("API KEY token not valid")
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326
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327 log.debug('Checking if %s is authenticated @ %s', user.username, cls)
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328 if user.is_authenticated or api_access_ok:
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329 log.debug('user %s is authenticated', user.username)
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330 return func(*fargs, **fkwargs)
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331 else:
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332 log.warn('user %s NOT authenticated', user.username)
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333 p = url.current()
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334
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335 log.debug('redirecting to login page with %s', p)
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336 return redirect(url('login_home', came_from=p))
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337
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338 class NotAnonymous(object):
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339 """Must be logged in to execute this function else
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340 redirect to login page"""
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341
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342 def __call__(self, func):
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343 return decorator(self.__wrapper, func)
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344
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345 def __wrapper(self, func, *fargs, **fkwargs):
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346 cls = fargs[0]
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347 self.user = cls.rhodecode_user
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348
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349 log.debug('Checking if user is not anonymous @%s', cls)
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350
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351 anonymous = self.user.username == 'default'
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352
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353 if anonymous:
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354 p = ''
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355 if request.environ.get('SCRIPT_NAME') != '/':
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356 p += request.environ.get('SCRIPT_NAME')
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357
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358 p += request.environ.get('PATH_INFO')
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359 if request.environ.get('QUERY_STRING'):
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360 p += '?' + request.environ.get('QUERY_STRING')
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361
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362 import rhodecode.lib.helpers as h
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363 h.flash(_('You need to be a registered user to perform this action'),
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364 category='warning')
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365 return redirect(url('login_home', came_from=p))
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366 else:
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367 return func(*fargs, **fkwargs)
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368
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369 class PermsDecorator(object):
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370 """Base class for controller decorators"""
673
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371
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372 def __init__(self, *required_perms):
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373 available_perms = config['available_permissions']
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374 for perm in required_perms:
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375 if perm not in available_perms:
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376 raise Exception("'%s' permission is not defined" % perm)
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377 self.required_perms = set(required_perms)
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378 self.user_perms = None
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379
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380 def __call__(self, func):
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381 return decorator(self.__wrapper, func)
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382
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383
377
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384 def __wrapper(self, func, *fargs, **fkwargs):
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385 cls = fargs[0]
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386 self.user = cls.rhodecode_user
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387 self.user_perms = self.user.permissions
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388 log.debug('checking %s permissions %s for %s %s',
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389 self.__class__.__name__, self.required_perms, cls,
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390 self.user)
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391
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392 if self.check_permissions():
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393 log.debug('Permission granted for %s %s', cls, self.user)
377
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394 return func(*fargs, **fkwargs)
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395
377
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396 else:
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397 log.warning('Permission denied for %s %s', cls, self.user)
377
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398 #redirect with forbidden ret code
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399 return abort(403)
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400
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401
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402
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403 def check_permissions(self):
377
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404 """Dummy function for overriding"""
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405 raise Exception('You have to write this function in child class')
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406
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407 class HasPermissionAllDecorator(PermsDecorator):
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408 """Checks for access permission for all given predicates. All of them
377
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409 have to be meet in order to fulfill the request
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410 """
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411
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412 def check_permissions(self):
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413 if self.required_perms.issubset(self.user_perms.get('global')):
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414 return True
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415 return False
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416
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417
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418 class HasPermissionAnyDecorator(PermsDecorator):
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419 """Checks for access permission for any of given predicates. In order to
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420 fulfill the request any of predicates must be meet
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421 """
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422
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423 def check_permissions(self):
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424 if self.required_perms.intersection(self.user_perms.get('global')):
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425 return True
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426 return False
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427
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428 class HasRepoPermissionAllDecorator(PermsDecorator):
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429 """Checks for access permission for all given predicates for specific
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430 repository. All of them have to be meet in order to fulfill the request
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431 """
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432
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433 def check_permissions(self):
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434 repo_name = get_repo_slug(request)
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435 try:
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436 user_perms = set([self.user_perms['repositories'][repo_name]])
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437 except KeyError:
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438 return False
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439 if self.required_perms.issubset(user_perms):
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440 return True
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441 return False
673
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442
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443
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444 class HasRepoPermissionAnyDecorator(PermsDecorator):
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445 """Checks for access permission for any of given predicates for specific
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446 repository. In order to fulfill the request any of predicates must be meet
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447 """
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448
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449 def check_permissions(self):
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450 repo_name = get_repo_slug(request)
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451
339
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452 try:
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453 user_perms = set([self.user_perms['repositories'][repo_name]])
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454 except KeyError:
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455 return False
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456 if self.required_perms.intersection(user_perms):
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457 return True
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458 return False
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459 #===============================================================================
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460 # CHECK FUNCTIONS
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461 #===============================================================================
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462
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463 class PermsFunction(object):
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464 """Base function for other check functions"""
673
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465
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466 def __init__(self, *perms):
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467 available_perms = config['available_permissions']
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468
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469 for perm in perms:
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470 if perm not in available_perms:
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471 raise Exception("'%s' permission in not defined" % perm)
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472 self.required_perms = set(perms)
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473 self.user_perms = None
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474 self.granted_for = ''
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475 self.repo_name = None
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476
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477 def __call__(self, check_Location=''):
548
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478 user = session.get('rhodecode_user', False)
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479 if not user:
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480 return False
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481 self.user_perms = user.permissions
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482 self.granted_for = user
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483 log.debug('checking %s %s %s', self.__class__.__name__,
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484 self.required_perms, user)
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485
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486 if self.check_permissions():
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487 log.debug('Permission granted %s @ %s', self.granted_for,
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488 check_Location or 'unspecified location')
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489 return True
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490
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491 else:
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492 log.warning('Permission denied for %s @ %s', self.granted_for,
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493 check_Location or 'unspecified location')
673
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494 return False
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495
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496 def check_permissions(self):
377
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497 """Dummy function for overriding"""
316
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498 raise Exception('You have to write this function in child class')
673
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499
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500 class HasPermissionAll(PermsFunction):
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501 def check_permissions(self):
339
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502 if self.required_perms.issubset(self.user_perms.get('global')):
316
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503 return True
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504 return False
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505
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506 class HasPermissionAny(PermsFunction):
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507 def check_permissions(self):
339
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508 if self.required_perms.intersection(self.user_perms.get('global')):
316
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509 return True
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510 return False
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511
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512 class HasRepoPermissionAll(PermsFunction):
673
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513
316
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514 def __call__(self, repo_name=None, check_Location=''):
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515 self.repo_name = repo_name
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516 return super(HasRepoPermissionAll, self).__call__(check_Location)
673
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517
316
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518 def check_permissions(self):
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519 if not self.repo_name:
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520 self.repo_name = get_repo_slug(request)
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521
339
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522 try:
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523 self.user_perms = set([self.user_perms['repositories']\
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524 [self.repo_name]])
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525 except KeyError:
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diff changeset
526 return False
673
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527 self.granted_for = self.repo_name
316
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528 if self.required_perms.issubset(self.user_perms):
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diff changeset
529 return True
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diff changeset
530 return False
673
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531
316
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532 class HasRepoPermissionAny(PermsFunction):
673
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533
316
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534 def __call__(self, repo_name=None, check_Location=''):
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535 self.repo_name = repo_name
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536 return super(HasRepoPermissionAny, self).__call__(check_Location)
673
dd532af216d9 #49 Enabled anonymous access for web interface controllable from permissions pannel
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diff changeset
537
316
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diff changeset
538 def check_permissions(self):
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parents: 299
diff changeset
539 if not self.repo_name:
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diff changeset
540 self.repo_name = get_repo_slug(request)
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diff changeset
541
339
5d517bbf0a0d some extra checks for auth lib
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diff changeset
542 try:
5d517bbf0a0d some extra checks for auth lib
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diff changeset
543 self.user_perms = set([self.user_perms['repositories']\
5d517bbf0a0d some extra checks for auth lib
Marcin Kuzminski <marcin@python-works.com>
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diff changeset
544 [self.repo_name]])
5d517bbf0a0d some extra checks for auth lib
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parents: 333
diff changeset
545 except KeyError:
5d517bbf0a0d some extra checks for auth lib
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parents: 333
diff changeset
546 return False
316
d6e2817734d2 Full rewrite of auth module, new functions/decorators. FIxed auth user
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diff changeset
547 self.granted_for = self.repo_name
239
b18f89d6d17f Adde draft for permissions systems, made all needed decorators, and checks. For future usage in the system.
Marcin Kuzminski <marcin@python-works.com>
parents: 234
diff changeset
548 if self.required_perms.intersection(self.user_perms):
b18f89d6d17f Adde draft for permissions systems, made all needed decorators, and checks. For future usage in the system.
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parents: 234
diff changeset
549 return True
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Marcin Kuzminski <marcin@python-works.com>
parents: 234
diff changeset
550 return False
b18f89d6d17f Adde draft for permissions systems, made all needed decorators, and checks. For future usage in the system.
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parents: 234
diff changeset
551
316
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diff changeset
552 #===============================================================================
d6e2817734d2 Full rewrite of auth module, new functions/decorators. FIxed auth user
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diff changeset
553 # SPECIAL VERSION TO HANDLE MIDDLEWARE AUTH
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diff changeset
554 #===============================================================================
239
b18f89d6d17f Adde draft for permissions systems, made all needed decorators, and checks. For future usage in the system.
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parents: 234
diff changeset
555
316
d6e2817734d2 Full rewrite of auth module, new functions/decorators. FIxed auth user
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parents: 299
diff changeset
556 class HasPermissionAnyMiddleware(object):
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parents: 299
diff changeset
557 def __init__(self, *perms):
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parents: 299
diff changeset
558 self.required_perms = set(perms)
673
dd532af216d9 #49 Enabled anonymous access for web interface controllable from permissions pannel
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parents: 629
diff changeset
559
316
d6e2817734d2 Full rewrite of auth module, new functions/decorators. FIxed auth user
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diff changeset
560 def __call__(self, user, repo_name):
1117
6eb5bb24a948 Major rewrite of auth objects. Moved parts of filling user data into user model.
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parents: 1116
diff changeset
561 usr = AuthUser(user.user_id)
316
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parents: 299
diff changeset
562 try:
1117
6eb5bb24a948 Major rewrite of auth objects. Moved parts of filling user data into user model.
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parents: 1116
diff changeset
563 self.user_perms = set([usr.permissions['repositories'][repo_name]])
316
d6e2817734d2 Full rewrite of auth module, new functions/decorators. FIxed auth user
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parents: 299
diff changeset
564 except:
d6e2817734d2 Full rewrite of auth module, new functions/decorators. FIxed auth user
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parents: 299
diff changeset
565 self.user_perms = set()
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Marcin Kuzminski <marcin@python-works.com>
parents: 299
diff changeset
566 self.granted_for = ''
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diff changeset
567 self.username = user.username
673
dd532af216d9 #49 Enabled anonymous access for web interface controllable from permissions pannel
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parents: 629
diff changeset
568 self.repo_name = repo_name
316
d6e2817734d2 Full rewrite of auth module, new functions/decorators. FIxed auth user
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parents: 299
diff changeset
569 return self.check_permissions()
673
dd532af216d9 #49 Enabled anonymous access for web interface controllable from permissions pannel
Marcin Kuzminski <marcin@python-works.com>
parents: 629
diff changeset
570
316
d6e2817734d2 Full rewrite of auth module, new functions/decorators. FIxed auth user
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parents: 299
diff changeset
571 def check_permissions(self):
d6e2817734d2 Full rewrite of auth module, new functions/decorators. FIxed auth user
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parents: 299
diff changeset
572 log.debug('checking mercurial protocol '
1040
8e49b6ceffe1 fixes fixes fixes ! optimized queries on journal
Marcin Kuzminski <marcin@python-works.com>
parents: 1036
diff changeset
573 'permissions %s for user:%s repository:%s', self.user_perms,
316
d6e2817734d2 Full rewrite of auth module, new functions/decorators. FIxed auth user
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parents: 299
diff changeset
574 self.username, self.repo_name)
d6e2817734d2 Full rewrite of auth module, new functions/decorators. FIxed auth user
Marcin Kuzminski <marcin@python-works.com>
parents: 299
diff changeset
575 if self.required_perms.intersection(self.user_perms):
d6e2817734d2 Full rewrite of auth module, new functions/decorators. FIxed auth user
Marcin Kuzminski <marcin@python-works.com>
parents: 299
diff changeset
576 log.debug('permission granted')
d6e2817734d2 Full rewrite of auth module, new functions/decorators. FIxed auth user
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parents: 299
diff changeset
577 return True
d6e2817734d2 Full rewrite of auth module, new functions/decorators. FIxed auth user
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parents: 299
diff changeset
578 log.debug('permission denied')
d6e2817734d2 Full rewrite of auth module, new functions/decorators. FIxed auth user
Marcin Kuzminski <marcin@python-works.com>
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diff changeset
579 return False