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annotate rhodecode/lib/middleware/simplegit.py @ 1813:a8c66e870bd0 beta

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implements #285: Implemented non changeable urls for clone url, and web views
author Marcin Kuzminski <marcin@python-works.com>
date Thu, 29 Dec 2011 00:01:05 +0200
parents b265be1c6093
children cf51bbfb120e
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.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 class SimpleGitUploadPackHandler(dulserver.UploadPackHandler):
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34
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35 def handle(self):
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36 write = lambda x: self.proto.write_sideband(1, x)
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37
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38 graph_walker = dulserver.ProtocolGraphWalker(self,
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39 self.repo.object_store,
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40 self.repo.get_peeled)
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41 objects_iter = self.repo.fetch_objects(
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42 graph_walker.determine_wants, graph_walker, self.progress,
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43 get_tagged=self.get_tagged)
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44
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45 # Do they want any objects?
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46 if objects_iter is None or len(objects_iter) == 0:
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47 return
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48
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49 self.progress("counting objects: %d, done.\n" % len(objects_iter))
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50 dulserver.write_pack_objects(dulserver.ProtocolFile(None, write),
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51 objects_iter, len(objects_iter))
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52 messages = []
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53 messages.append('thank you for using rhodecode')
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54
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55 for msg in messages:
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56 self.progress(msg + "\n")
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57 # we are done
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58 self.proto.write("0000")
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59
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60 dulserver.DEFAULT_HANDLERS = {
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61 'git-upload-pack': SimpleGitUploadPackHandler,
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62 'git-receive-pack': dulserver.ReceivePackHandler,
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63 }
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64
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65 from dulwich.repo import Repo
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66 from dulwich.web import HTTPGitApplication
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67
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68 from paste.httpheaders import REMOTE_USER, AUTH_TYPE
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69
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70 from rhodecode.lib import safe_str
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71 from rhodecode.lib.base import BaseVCSController
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72 from rhodecode.lib.auth import get_container_username
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73 from rhodecode.lib.utils import is_valid_repo
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74 from rhodecode.model.db import User
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75
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76 from webob.exc import HTTPNotFound, HTTPForbidden, HTTPInternalServerError
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77
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78 log = logging.getLogger(__name__)
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79
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80
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81 def is_git(environ):
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82 """Returns True if request's target is git server.
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83 ``HTTP_USER_AGENT`` would then have git client version given.
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84
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85 :param environ:
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86 """
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87 http_user_agent = environ.get('HTTP_USER_AGENT')
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88 if http_user_agent and http_user_agent.startswith('git'):
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89 return True
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90 return False
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91
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92
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93 class SimpleGit(BaseVCSController):
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94
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95 def _handle_request(self, environ, start_response):
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96 if not is_git(environ):
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97 return self.application(environ, start_response)
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98
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99 proxy_key = 'HTTP_X_REAL_IP'
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100 def_key = 'REMOTE_ADDR'
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101 ipaddr = environ.get(proxy_key, environ.get(def_key, '0.0.0.0'))
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102 username = None
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103 # skip passing error to error controller
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104 environ['pylons.status_code_redirect'] = True
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105
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106 #======================================================================
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107 # EXTRACT REPOSITORY NAME FROM ENV
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108 #======================================================================
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109 try:
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110 repo_name = self.__get_repository(environ)
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111 log.debug('Extracted repo name is %s' % repo_name)
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112 except:
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113 return HTTPInternalServerError()(environ, start_response)
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114
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115 #======================================================================
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116 # GET ACTION PULL or PUSH
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117 #======================================================================
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118 action = self.__get_action(environ)
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119
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120 #======================================================================
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121 # CHECK ANONYMOUS PERMISSION
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122 #======================================================================
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123 if action in ['pull', 'push']:
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124 anonymous_user = self.__get_user('default')
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125 username = anonymous_user.username
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126 anonymous_perm = self._check_permission(action,anonymous_user,
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127 repo_name)
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128
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129 if anonymous_perm is not True or anonymous_user.active is False:
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130 if anonymous_perm is not True:
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131 log.debug('Not enough credentials to access this '
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132 'repository as anonymous user')
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133 if anonymous_user.active is False:
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134 log.debug('Anonymous access is disabled, running '
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135 'authentication')
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136 #==============================================================
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137 # DEFAULT PERM FAILED OR ANONYMOUS ACCESS IS DISABLED SO WE
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138 # NEED TO AUTHENTICATE AND ASK FOR AUTH USER PERMISSIONS
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139 #==============================================================
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140
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141 # Attempting to retrieve username from the container
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142 username = get_container_username(environ, self.config)
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143
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144 # If not authenticated by the container, running basic auth
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145 if not username:
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146 self.authenticate.realm = \
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147 safe_str(self.config['rhodecode_realm'])
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148 result = self.authenticate(environ)
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149 if isinstance(result, str):
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150 AUTH_TYPE.update(environ, 'basic')
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151 REMOTE_USER.update(environ, result)
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152 username = result
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153 else:
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154 return result.wsgi_application(environ, start_response)
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155
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156 #==============================================================
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157 # CHECK PERMISSIONS FOR THIS REQUEST USING GIVEN USERNAME
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158 #==============================================================
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159
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160 if action in ['pull', 'push']:
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161 try:
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162 user = self.__get_user(username)
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163 if user is None or not user.active:
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164 return HTTPForbidden()(environ, start_response)
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165 username = user.username
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166 except:
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167 log.error(traceback.format_exc())
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168 return HTTPInternalServerError()(environ,
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169 start_response)
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170
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171 #check permissions for this repository
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172 perm = self._check_permission(action, user,
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173 repo_name)
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174 if perm is not True:
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175 return HTTPForbidden()(environ, start_response)
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176
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177 #===================================================================
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178 # GIT REQUEST HANDLING
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179 #===================================================================
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180
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181 repo_path = safe_str(os.path.join(self.basepath, repo_name))
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182 log.debug('Repository path is %s' % repo_path)
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183
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184 # quick check if that dir exists...
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185 if is_valid_repo(repo_name, self.basepath) is False:
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186 return HTTPNotFound()(environ, start_response)
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187
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188 try:
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189 #invalidate cache on push
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190 if action == 'push':
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191 self._invalidate_cache(repo_name)
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192
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193 app = self.__make_app(repo_name, repo_path)
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194 return app(environ, start_response)
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195 except Exception:
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196 log.error(traceback.format_exc())
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197 return HTTPInternalServerError()(environ, start_response)
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198
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199 def __make_app(self, repo_name, repo_path):
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200 """
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201 Make an wsgi application using dulserver
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202
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203 :param repo_name: name of the repository
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204 :param repo_path: full path to the repository
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205 """
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206
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207 _d = {'/' + repo_name: Repo(repo_path)}
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208 backend = dulserver.DictBackend(_d)
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209 gitserve = HTTPGitApplication(backend)
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210
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211 return gitserve
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212
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213 def __get_repository(self, environ):
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214 """
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215 Get's repository name out of PATH_INFO header
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216
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217 :param environ: environ where PATH_INFO is stored
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218 """
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219 try:
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220 environ['PATH_INFO'] = self._get_by_id(environ['PATH_INFO'])
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221 repo_name = '/'.join(environ['PATH_INFO'].split('/')[1:])
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222 if repo_name.endswith('/'):
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223 repo_name = repo_name.rstrip('/')
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224 except:
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225 log.error(traceback.format_exc())
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226 raise
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227 repo_name = repo_name.split('/')[0]
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228 return repo_name
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229
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230 def __get_user(self, username):
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231 return User.get_by_username(username)
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232
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233 def __get_action(self, environ):
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234 """Maps git request commands into a pull or push command.
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235
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236 :param environ:
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237 """
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238 service = environ['QUERY_STRING'].split('=')
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239 if len(service) > 1:
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240 service_cmd = service[1]
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241 mapping = {'git-receive-pack': 'push',
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242 'git-upload-pack': 'pull',
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243 }
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244
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245 return mapping.get(service_cmd,
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246 service_cmd if service_cmd else 'other')
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247 else:
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248 return 'other'