Mercurial > kallithea
annotate pylons_app/lib/auth.py @ 497:fb0c3af6031b celery
Implemented locking for task, to prevent for running the same tasks,
moved out pidlock library. Added dirsize display
author | Marcin Kuzminski <marcin@python-works.com> |
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date | Thu, 23 Sep 2010 01:08:33 +0200 |
parents | a3d9d24acbec |
children | fdb78a140ae4 |
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1 #!/usr/bin/env python |
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2 # encoding: utf-8 |
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3 # authentication and permission libraries |
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4 # Copyright (C) 2009-2010 Marcin Kuzminski <marcin@python-works.com> |
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5 # |
252
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6 # This program is free software; you can redistribute it and/or |
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7 # modify it under the terms of the GNU General Public License |
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8 # as published by the Free Software Foundation; version 2 |
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9 # of the License or (at your opinion) any later version of the license. |
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10 # |
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11 # This program is distributed in the hope that it will be useful, |
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12 # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 # GNU General Public License for more details. |
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15 # |
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16 # You should have received a copy of the GNU General Public License |
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17 # along with this program; if not, write to the Free Software |
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18 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
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19 # MA 02110-1301, USA. |
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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 beaker.cache import cache_region |
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26 from pylons import config, session, url, request |
52 | 27 from pylons.controllers.util import abort, redirect |
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28 from pylons_app.lib.utils import get_repo_slug |
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29 from pylons_app.model import meta |
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30 from pylons_app.model.db import User, RepoToPerm, Repository, Permission, \ |
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31 UserToPerm |
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32 from sqlalchemy.exc import OperationalError |
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33 from sqlalchemy.orm.exc import NoResultFound, MultipleResultsFound |
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34 import bcrypt |
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35 from decorator import decorator |
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36 import logging |
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37 import random |
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38 |
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39 log = logging.getLogger(__name__) |
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40 |
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41 class PasswordGenerator(object): |
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42 """This is a simple class for generating password from |
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43 different sets of characters |
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44 usage: |
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45 passwd_gen = PasswordGenerator() |
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46 #print 8-letter password containing only big and small letters of alphabet |
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47 print passwd_gen.gen_password(8, passwd_gen.ALPHABETS_BIG_SMALL) |
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48 """ |
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49 ALPHABETS_NUM = r'''1234567890'''#[0] |
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50 ALPHABETS_SMALL = r'''qwertyuiopasdfghjklzxcvbnm'''#[1] |
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51 ALPHABETS_BIG = r'''QWERTYUIOPASDFGHJKLZXCVBNM'''#[2] |
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52 ALPHABETS_SPECIAL = r'''`-=[]\;',./~!@#$%^&*()_+{}|:"<>?''' #[3] |
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53 ALPHABETS_FULL = ALPHABETS_BIG + ALPHABETS_SMALL + ALPHABETS_NUM + ALPHABETS_SPECIAL#[4] |
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54 ALPHABETS_ALPHANUM = ALPHABETS_BIG + ALPHABETS_SMALL + ALPHABETS_NUM#[5] |
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55 ALPHABETS_BIG_SMALL = ALPHABETS_BIG + ALPHABETS_SMALL |
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56 ALPHABETS_ALPHANUM_BIG = ALPHABETS_BIG + ALPHABETS_NUM#[6] |
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57 ALPHABETS_ALPHANUM_SMALL = ALPHABETS_SMALL + ALPHABETS_NUM#[7] |
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58 |
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59 def __init__(self, passwd=''): |
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60 self.passwd = passwd |
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61 |
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62 def gen_password(self, len, type): |
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63 self.passwd = ''.join([random.choice(type) for _ in xrange(len)]) |
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64 return self.passwd |
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65 |
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66 |
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67 def get_crypt_password(password): |
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68 """Cryptographic function used for password hashing based on sha1 |
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69 @param password: password to hash |
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70 """ |
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71 return bcrypt.hashpw(password, bcrypt.gensalt(10)) |
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72 |
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73 def check_password(password, hashed): |
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74 return bcrypt.hashpw(password, hashed) == hashed |
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75 |
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76 @cache_region('super_short_term', 'cached_user') |
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77 def get_user_cached(username): |
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78 sa = meta.Session |
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79 try: |
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80 user = sa.query(User).filter(User.username == username).one() |
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81 finally: |
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82 meta.Session.remove() |
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83 return user |
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84 |
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85 def authfunc(environ, username, password): |
42 | 86 try: |
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87 user = get_user_cached(username) |
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88 except (NoResultFound, MultipleResultsFound, OperationalError) as e: |
42 | 89 log.error(e) |
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90 user = None |
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91 |
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92 if user: |
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93 if user.active: |
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94 if user.username == username and check_password(password, user.password): |
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95 log.info('user %s authenticated correctly', username) |
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96 return True |
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97 else: |
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98 log.error('user %s is disabled', username) |
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99 |
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100 return False |
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101 |
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102 class AuthUser(object): |
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103 """ |
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104 A simple object that handles a mercurial username for authentication |
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105 """ |
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106 def __init__(self): |
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107 self.username = 'None' |
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108 self.name = '' |
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109 self.lastname = '' |
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110 self.email = '' |
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111 self.user_id = None |
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112 self.is_authenticated = False |
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113 self.is_admin = False |
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114 self.permissions = {} |
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115 |
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116 |
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117 def set_available_permissions(config): |
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118 """ |
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119 This function will propagate pylons globals with all available defined |
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120 permission given in db. We don't wannt to check each time from db for new |
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121 permissions since adding a new permission also requires application restart |
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122 ie. to decorate new views with the newly created permission |
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123 @param config: |
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124 """ |
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125 log.info('getting information about all available permissions') |
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126 try: |
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127 sa = meta.Session |
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128 all_perms = sa.query(Permission).all() |
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129 finally: |
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130 meta.Session.remove() |
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131 |
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132 config['available_permissions'] = [x.permission_name for x in all_perms] |
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133 |
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134 def set_base_path(config): |
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135 config['base_path'] = config['pylons.app_globals'].base_path |
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136 |
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137 def fill_data(user): |
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138 """ |
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139 Fills user data with those from database and log out user if not present |
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140 in database |
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141 @param user: |
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142 """ |
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143 sa = meta.Session |
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144 dbuser = sa.query(User).get(user.user_id) |
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145 if dbuser: |
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146 user.username = dbuser.username |
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147 user.is_admin = dbuser.admin |
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148 user.name = dbuser.name |
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149 user.lastname = dbuser.lastname |
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150 user.email = dbuser.email |
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151 else: |
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152 user.is_authenticated = False |
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153 meta.Session.remove() |
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154 return user |
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155 |
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156 def fill_perms(user): |
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157 """ |
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158 Fills user permission attribute with permissions taken from database |
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159 @param user: |
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160 """ |
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161 |
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162 sa = meta.Session |
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163 user.permissions['repositories'] = {} |
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164 user.permissions['global'] = set() |
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165 |
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166 #=========================================================================== |
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167 # fetch default permissions |
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168 #=========================================================================== |
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169 default_perms = sa.query(RepoToPerm, Repository, Permission)\ |
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170 .join((Repository, RepoToPerm.repository_id == Repository.repo_id))\ |
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171 .join((Permission, RepoToPerm.permission_id == Permission.permission_id))\ |
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172 .filter(RepoToPerm.user == sa.query(User).filter(User.username == |
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173 'default').scalar()).all() |
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174 |
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175 if user.is_admin: |
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176 #======================================================================= |
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177 # #admin have all default rights set to admin |
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178 #======================================================================= |
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179 user.permissions['global'].add('hg.admin') |
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180 |
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181 for perm in default_perms: |
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182 p = 'repository.admin' |
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183 user.permissions['repositories'][perm.RepoToPerm.repository.repo_name] = p |
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184 |
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185 else: |
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186 #======================================================================= |
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187 # set default permissions |
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188 #======================================================================= |
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189 |
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190 #default global |
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191 default_global_perms = sa.query(UserToPerm)\ |
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192 .filter(UserToPerm.user == sa.query(User).filter(User.username == |
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193 'default').one()) |
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194 |
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195 for perm in default_global_perms: |
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196 user.permissions['global'].add(perm.permission.permission_name) |
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197 |
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198 #default repositories |
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199 for perm in default_perms: |
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200 if perm.Repository.private and not perm.Repository.user_id == user.user_id: |
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201 #disable defaults for private repos, |
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202 p = 'repository.none' |
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203 elif perm.Repository.user_id == user.user_id: |
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204 #set admin if owner |
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205 p = 'repository.admin' |
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206 else: |
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207 p = perm.Permission.permission_name |
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208 |
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209 user.permissions['repositories'][perm.RepoToPerm.repository.repo_name] = p |
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210 |
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211 #======================================================================= |
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212 # #overwrite default with user permissions if any |
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213 #======================================================================= |
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214 user_perms = sa.query(RepoToPerm, Permission, Repository)\ |
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215 .join((Repository, RepoToPerm.repository_id == Repository.repo_id))\ |
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216 .join((Permission, RepoToPerm.permission_id == Permission.permission_id))\ |
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217 .filter(RepoToPerm.user_id == user.user_id).all() |
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218 |
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219 for perm in user_perms: |
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220 if perm.Repository.user_id == user.user_id:#set admin if owner |
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221 p = 'repository.admin' |
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222 else: |
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223 p = perm.Permission.permission_name |
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224 user.permissions['repositories'][perm.RepoToPerm.repository.repo_name] = p |
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225 meta.Session.remove() |
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226 return user |
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227 |
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228 def get_user(session): |
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229 """ |
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230 Gets user from session, and wraps permissions into user |
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231 @param session: |
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232 """ |
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233 user = session.get('hg_app_user', AuthUser()) |
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234 if user.is_authenticated: |
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235 user = fill_data(user) |
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236 user = fill_perms(user) |
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237 session['hg_app_user'] = user |
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238 session.save() |
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239 return user |
239
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240 |
190
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241 #=============================================================================== |
316
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242 # CHECK DECORATORS |
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243 #=============================================================================== |
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244 class LoginRequired(object): |
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245 """Must be logged in to execute this function else redirect to login page""" |
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246 |
190
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247 def __call__(self, func): |
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248 return decorator(self.__wrapper, func) |
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249 |
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250 def __wrapper(self, func, *fargs, **fkwargs): |
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251 user = session.get('hg_app_user', AuthUser()) |
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252 log.debug('Checking login required for user:%s', user.username) |
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253 if user.is_authenticated: |
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254 log.debug('user %s is authenticated', user.username) |
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255 return func(*fargs, **fkwargs) |
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256 else: |
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257 log.warn('user %s not authenticated', user.username) |
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258 |
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259 p = request.environ.get('PATH_INFO') |
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260 if request.environ.get('QUERY_STRING'): |
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261 p += '?' + request.environ.get('QUERY_STRING') |
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262 log.debug('redirecting to login page with %s', p) |
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263 return redirect(url('login_home', came_from=p)) |
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264 |
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265 class PermsDecorator(object): |
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266 """Base class for decorators""" |
239
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267 |
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268 def __init__(self, *required_perms): |
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269 available_perms = config['available_permissions'] |
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270 for perm in required_perms: |
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271 if perm not in available_perms: |
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272 raise Exception("'%s' permission is not defined" % perm) |
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273 self.required_perms = set(required_perms) |
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274 self.user_perms = None |
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275 |
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276 def __call__(self, func): |
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277 return decorator(self.__wrapper, func) |
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278 |
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279 |
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280 def __wrapper(self, func, *fargs, **fkwargs): |
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281 # _wrapper.__name__ = func.__name__ |
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282 # _wrapper.__dict__.update(func.__dict__) |
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283 # _wrapper.__doc__ = func.__doc__ |
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284 |
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285 self.user_perms = session.get('hg_app_user', AuthUser()).permissions |
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286 log.debug('checking %s permissions %s for %s', |
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287 self.__class__.__name__, self.required_perms, func.__name__) |
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288 |
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289 if self.check_permissions(): |
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290 log.debug('Permission granted for %s', func.__name__) |
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291 |
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292 return func(*fargs, **fkwargs) |
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293 |
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294 else: |
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295 log.warning('Permission denied for %s', func.__name__) |
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296 #redirect with forbidden ret code |
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297 return abort(403) |
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298 |
239
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299 |
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300 |
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301 def check_permissions(self): |
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302 """Dummy function for overriding""" |
239
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303 raise Exception('You have to write this function in child class') |
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304 |
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305 class HasPermissionAllDecorator(PermsDecorator): |
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306 """Checks for access permission for all given predicates. All of them |
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307 have to be meet in order to fulfill the request |
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308 """ |
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309 |
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310 def check_permissions(self): |
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311 if self.required_perms.issubset(self.user_perms.get('global')): |
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312 return True |
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313 return False |
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314 |
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315 |
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316 class HasPermissionAnyDecorator(PermsDecorator): |
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317 """Checks for access permission for any of given predicates. In order to |
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318 fulfill the request any of predicates must be meet |
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319 """ |
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320 |
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321 def check_permissions(self): |
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322 if self.required_perms.intersection(self.user_perms.get('global')): |
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323 return True |
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324 return False |
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325 |
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326 class HasRepoPermissionAllDecorator(PermsDecorator): |
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327 """Checks for access permission for all given predicates for specific |
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328 repository. All of them have to be meet in order to fulfill the request |
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329 """ |
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330 |
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331 def check_permissions(self): |
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332 repo_name = get_repo_slug(request) |
339
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333 try: |
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334 user_perms = set([self.user_perms['repositories'][repo_name]]) |
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335 except KeyError: |
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336 return False |
316
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337 if self.required_perms.issubset(user_perms): |
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338 return True |
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339 return False |
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340 |
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341 |
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342 class HasRepoPermissionAnyDecorator(PermsDecorator): |
377
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343 """Checks for access permission for any of given predicates for specific |
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344 repository. In order to fulfill the request any of predicates must be meet |
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345 """ |
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346 |
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347 def check_permissions(self): |
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348 repo_name = get_repo_slug(request) |
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349 |
339
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350 try: |
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351 user_perms = set([self.user_perms['repositories'][repo_name]]) |
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352 except KeyError: |
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353 return False |
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354 if self.required_perms.intersection(user_perms): |
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355 return True |
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356 return False |
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357 #=============================================================================== |
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358 # CHECK FUNCTIONS |
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359 #=============================================================================== |
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360 |
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361 class PermsFunction(object): |
377
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362 """Base function for other check functions""" |
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363 |
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364 def __init__(self, *perms): |
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365 available_perms = config['available_permissions'] |
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366 |
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367 for perm in perms: |
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368 if perm not in available_perms: |
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369 raise Exception("'%s' permission in not defined" % perm) |
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370 self.required_perms = set(perms) |
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371 self.user_perms = None |
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372 self.granted_for = '' |
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373 self.repo_name = None |
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374 |
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375 def __call__(self, check_Location=''): |
333 | 376 user = session.get('hg_app_user', False) |
377 if not user: | |
378 return False | |
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379 self.user_perms = user.permissions |
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380 self.granted_for = user.username |
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381 log.debug('checking %s %s', self.__class__.__name__, self.required_perms) |
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382 |
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383 if self.check_permissions(): |
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384 log.debug('Permission granted for %s @%s', self.granted_for, |
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385 check_Location) |
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386 return True |
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387 |
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388 else: |
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389 log.warning('Permission denied for %s @%s', self.granted_for, |
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390 check_Location) |
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391 return False |
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392 |
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393 def check_permissions(self): |
377
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394 """Dummy function for overriding""" |
316
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395 raise Exception('You have to write this function in child class') |
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396 |
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397 class HasPermissionAll(PermsFunction): |
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398 def check_permissions(self): |
339
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399 if self.required_perms.issubset(self.user_perms.get('global')): |
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400 return True |
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401 return False |
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402 |
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403 class HasPermissionAny(PermsFunction): |
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404 def check_permissions(self): |
339
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405 if self.required_perms.intersection(self.user_perms.get('global')): |
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406 return True |
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407 return False |
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408 |
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409 class HasRepoPermissionAll(PermsFunction): |
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410 |
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411 def __call__(self, repo_name=None, check_Location=''): |
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412 self.repo_name = repo_name |
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413 return super(HasRepoPermissionAll, self).__call__(check_Location) |
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414 |
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415 def check_permissions(self): |
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416 if not self.repo_name: |
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417 self.repo_name = get_repo_slug(request) |
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418 |
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419 try: |
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420 self.user_perms = set([self.user_perms['repositories']\ |
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421 [self.repo_name]]) |
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422 except KeyError: |
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423 return False |
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424 self.granted_for = self.repo_name |
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425 if self.required_perms.issubset(self.user_perms): |
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426 return True |
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427 return False |
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428 |
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429 class HasRepoPermissionAny(PermsFunction): |
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430 |
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431 def __call__(self, repo_name=None, check_Location=''): |
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432 self.repo_name = repo_name |
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433 return super(HasRepoPermissionAny, self).__call__(check_Location) |
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434 |
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435 def check_permissions(self): |
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436 if not self.repo_name: |
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437 self.repo_name = get_repo_slug(request) |
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438 |
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439 try: |
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440 self.user_perms = set([self.user_perms['repositories']\ |
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441 [self.repo_name]]) |
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442 except KeyError: |
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443 return False |
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444 self.granted_for = self.repo_name |
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445 if self.required_perms.intersection(self.user_perms): |
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446 return True |
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447 return False |
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448 |
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449 #=============================================================================== |
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450 # SPECIAL VERSION TO HANDLE MIDDLEWARE AUTH |
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451 #=============================================================================== |
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452 |
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453 class HasPermissionAnyMiddleware(object): |
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454 def __init__(self, *perms): |
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455 self.required_perms = set(perms) |
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456 |
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457 def __call__(self, user, repo_name): |
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458 usr = AuthUser() |
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459 usr.user_id = user.user_id |
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460 usr.username = user.username |
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461 usr.is_admin = user.admin |
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462 |
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463 try: |
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464 self.user_perms = set([fill_perms(usr)\ |
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465 .permissions['repositories'][repo_name]]) |
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466 except: |
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467 self.user_perms = set() |
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468 self.granted_for = '' |
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469 self.username = user.username |
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470 self.repo_name = repo_name |
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471 return self.check_permissions() |
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472 |
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473 def check_permissions(self): |
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474 log.debug('checking mercurial protocol ' |
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475 'permissions for user:%s repository:%s', |
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476 self.username, self.repo_name) |
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477 if self.required_perms.intersection(self.user_perms): |
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478 log.debug('permission granted') |
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479 return True |
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480 log.debug('permission denied') |
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481 return False |