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annotate rhodecode/lib/middleware/simplegit.py @ 1496:f4fed0b32103 beta

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Rewrote git middleware with the same pattern as recent fix for #176 - additionally fixed dulwich server bug, that used old deprecated method. This fix caused huge improvement of speed for fetching git repos - moved simplehg and simplegit middleware into begining of pylons callstack. This low level middleware don't need to run any of the middlewares except each other.
author Marcin Kuzminski <marcin@python-works.com>
date Thu, 29 Sep 2011 23:34:47 +0300
parents b7563ad4e7ee
children 71738535ed78
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1 # -*- coding: utf-8 -*-
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2 """
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3 rhodecode.lib.middleware.simplegit
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4 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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5
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6 SimpleGit middleware for handling git protocol request (push/clone etc.)
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7 It's implemented with basic auth function
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8
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9 :created_on: Apr 28, 2010
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10 :author: marcink
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11 :copyright: (C) 2009-2010 Marcin Kuzminski <marcin@python-works.com>
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12 :license: GPLv3, see COPYING for more details.
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13 """
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14 # This program is free software: you can redistribute it and/or modify
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15 # it under the terms of the GNU General Public License as published by
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16 # the Free Software Foundation, either version 3 of the License, or
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17 # (at your option) any later version.
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18 #
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19 # This program is distributed in the hope that it will be useful,
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20 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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21 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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22 # GNU General Public License for more details.
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23 #
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24 # You should have received a copy of the GNU General Public License
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25 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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26
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27 import os
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28 import logging
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29 import traceback
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30
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31 from dulwich import server as dulserver
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32
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33
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34 class SimpleGitUploadPackHandler(dulserver.UploadPackHandler):
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35
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36 def handle(self):
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37 write = lambda x: self.proto.write_sideband(1, x)
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38
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39 graph_walker = dulserver.ProtocolGraphWalker(self,
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40 self.repo.object_store,
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41 self.repo.get_peeled)
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42 objects_iter = self.repo.fetch_objects(
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43 graph_walker.determine_wants, graph_walker, self.progress,
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44 get_tagged=self.get_tagged)
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45
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46 # Do they want any objects?
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47 if objects_iter is None or len(objects_iter) == 0:
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48 return
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49
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50 self.progress("counting objects: %d, done.\n" % len(objects_iter))
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51 dulserver.write_pack_objects(dulserver.ProtocolFile(None, write),
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52 objects_iter, len(objects_iter))
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53 messages = []
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54 messages.append('thank you for using rhodecode')
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55
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56 for msg in messages:
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57 self.progress(msg + "\n")
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58 # we are done
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59 self.proto.write("0000")
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60
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61 dulserver.DEFAULT_HANDLERS = {
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62 'git-upload-pack': SimpleGitUploadPackHandler,
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63 'git-receive-pack': dulserver.ReceivePackHandler,
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64 }
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65
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66 from dulwich.repo import Repo
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67 from dulwich.web import HTTPGitApplication
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68
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69 from paste.auth.basic import AuthBasicAuthenticator
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70 from paste.httpheaders import REMOTE_USER, AUTH_TYPE
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71
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72 from rhodecode.lib import safe_str
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73 from rhodecode.lib.auth import authfunc, HasPermissionAnyMiddleware
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74 from rhodecode.lib.utils import invalidate_cache, check_repo_fast
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75 from rhodecode.model.user import UserModel
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76
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77 from webob.exc import HTTPNotFound, HTTPForbidden, HTTPInternalServerError
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78
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79 log = logging.getLogger(__name__)
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80
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81
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82 def is_git(environ):
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83 """Returns True if request's target is git server.
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84 ``HTTP_USER_AGENT`` would then have git client version given.
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85
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86 :param environ:
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87 """
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88 http_user_agent = environ.get('HTTP_USER_AGENT')
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89 if http_user_agent and http_user_agent.startswith('git'):
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90 return True
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91 return False
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92
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93
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94 class SimpleGit(object):
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95
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96 def __init__(self, application, config):
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97 self.application = application
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98 self.config = config
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99 # base path of repo locations
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100 self.basepath = self.config['base_path']
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101 #authenticate this mercurial request using authfunc
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102 self.authenticate = AuthBasicAuthenticator('', authfunc)
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103
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104 def __call__(self, environ, start_response):
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105 if not is_git(environ):
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106 return self.application(environ, start_response)
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107
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108 proxy_key = 'HTTP_X_REAL_IP'
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109 def_key = 'REMOTE_ADDR'
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110 ipaddr = environ.get(proxy_key, environ.get(def_key, '0.0.0.0'))
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111 username = None
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112 # skip passing error to error controller
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113 environ['pylons.status_code_redirect'] = True
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114
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115 #======================================================================
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116 # EXTRACT REPOSITORY NAME FROM ENV
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117 #======================================================================
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118 try:
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119 repo_name = self.__get_repository(environ)
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120 log.debug('Extracted repo name is %s' % repo_name)
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121 except:
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122 return HTTPInternalServerError()(environ, start_response)
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123
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124 #======================================================================
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125 # GET ACTION PULL or PUSH
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126 #======================================================================
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127 action = self.__get_action(environ)
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128
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129 #======================================================================
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130 # CHECK ANONYMOUS PERMISSION
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131 #======================================================================
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132 if action in ['pull', 'push']:
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133 anonymous_user = self.__get_user('default')
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134 username = anonymous_user.username
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135 anonymous_perm = self.__check_permission(action,
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136 anonymous_user,
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137 repo_name)
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138
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139 if anonymous_perm is not True or anonymous_user.active is False:
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140 if anonymous_perm is not True:
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141 log.debug('Not enough credentials to access this '
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142 'repository as anonymous user')
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143 if anonymous_user.active is False:
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144 log.debug('Anonymous access is disabled, running '
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145 'authentication')
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146 #==============================================================
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147 # DEFAULT PERM FAILED OR ANONYMOUS ACCESS IS DISABLED SO WE
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148 # NEED TO AUTHENTICATE AND ASK FOR AUTH USER PERMISSIONS
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149 #==============================================================
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150
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151 if not REMOTE_USER(environ):
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152 self.authenticate.realm = \
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153 safe_str(self.config['rhodecode_realm'])
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154 result = self.authenticate(environ)
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155 if isinstance(result, str):
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156 AUTH_TYPE.update(environ, 'basic')
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157 REMOTE_USER.update(environ, result)
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158 else:
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159 return result.wsgi_application(environ, start_response)
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160
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161 #==============================================================
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162 # CHECK PERMISSIONS FOR THIS REQUEST USING GIVEN USERNAME FROM
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163 # BASIC AUTH
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164 #==============================================================
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165
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166 if action in ['pull', 'push']:
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167 username = REMOTE_USER(environ)
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168 try:
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169 user = self.__get_user(username)
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170 username = user.username
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171 except:
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172 log.error(traceback.format_exc())
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173 return HTTPInternalServerError()(environ,
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174 start_response)
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175
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176 #check permissions for this repository
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177 perm = self.__check_permission(action, user,
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178 repo_name)
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179 if perm is not True:
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180 return HTTPForbidden()(environ, start_response)
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181
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182 extras = {'ip': ipaddr,
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183 'username': username,
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184 'action': action,
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185 'repository': repo_name}
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186
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187 #===================================================================
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188 # GIT REQUEST HANDLING
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189 #===================================================================
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190
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191 repo_path = safe_str(os.path.join(self.basepath, repo_name))
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192 log.debug('Repository path is %s' % repo_path)
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193
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194 # quick check if that dir exists...
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195 if check_repo_fast(repo_name, self.basepath):
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196 return HTTPNotFound()(environ, start_response)
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197
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198 try:
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199 #invalidate cache on push
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200 if action == 'push':
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201 self.__invalidate_cache(repo_name)
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202
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203 app = self.__make_app(repo_name, repo_path)
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204 return app(environ, start_response)
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205 except Exception:
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206 log.error(traceback.format_exc())
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207 return HTTPInternalServerError()(environ, start_response)
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208
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209 def __make_app(self, repo_name, repo_path):
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210 """
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211 Make an wsgi application using dulserver
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212
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213 :param repo_name: name of the repository
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214 :param repo_path: full path to the repository
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215 """
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216
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217 _d = {'/' + repo_name: Repo(repo_path)}
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218 backend = dulserver.DictBackend(_d)
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219 gitserve = HTTPGitApplication(backend)
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220
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221 return gitserve
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222
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223 def __check_permission(self, action, user, repo_name):
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224 """
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225 Checks permissions using action (push/pull) user and repository
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226 name
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227
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228 :param action: push or pull action
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229 :param user: user instance
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230 :param repo_name: repository name
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231 """
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232 if action == 'push':
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233 if not HasPermissionAnyMiddleware('repository.write',
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234 'repository.admin')(user,
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235 repo_name):
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236 return False
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237
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238 else:
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239 #any other action need at least read permission
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240 if not HasPermissionAnyMiddleware('repository.read',
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241 'repository.write',
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242 'repository.admin')(user,
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243 repo_name):
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244 return False
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245
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246 return True
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247
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248 def __get_repository(self, environ):
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249 """
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250 Get's repository name out of PATH_INFO header
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251
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252 :param environ: environ where PATH_INFO is stored
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253 """
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254 try:
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255 repo_name = '/'.join(environ['PATH_INFO'].split('/')[1:])
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256 if repo_name.endswith('/'):
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257 repo_name = repo_name.rstrip('/')
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258 except:
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259 log.error(traceback.format_exc())
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260 raise
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261 repo_name = repo_name.split('/')[0]
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262 return repo_name
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264 def __get_user(self, username):
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fd63782c4426 Fixed age, for new vcs implementation. Removed all obsolete date formatters
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265 return UserModel().get_by_username(username, cache=True)
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267 def __get_action(self, environ):
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04c9bb9ca6d6 code docs, updates
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268 """Maps git request commands into a pull or push command.
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6832ef664673 source code cleanup: remove trailing white space, normalize file endings
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270 :param environ:
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271 """
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272 service = environ['QUERY_STRING'].split('=')
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273 if len(service) > 1:
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274 service_cmd = service[1]
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275 mapping = {'git-receive-pack': 'push',
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276 'git-upload-pack': 'pull',
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277 }
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278
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2723276285ae pep8ify middlewares
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279 return mapping.get(service_cmd,
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280 service_cmd if service_cmd else 'other')
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281 else:
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282 return 'other'
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283
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284 def __invalidate_cache(self, repo_name):
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285 """we know that some change was made to repositories and we should
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286 invalidate the cache to see the changes right away but only for
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287 push requests"""
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070f32743632 Moved out reposcan into hg Model.
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288 invalidate_cache('get_repo_cached_%s' % repo_name)
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f4fed0b32103 Rewrote git middleware with the same pattern as recent fix for #176
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