annotate MoinMoin/app.py @ 975:a4d4c74721bc

fixed the routing middleware the routing mw iterator now yields tuples (mountpoint, revid), some methods in the routing middleware want name,revid now (this is so they can find out the correct backend, with just the revid this is not easily possible (would need an index lookup for the name). the indexing tests now just use the storage given by the test framework instead of manually assembling their own one. most changes in this cs are related to these changes. additionally I introduced some new test class attribute "reinit_storage" - if it is present and True, the test framework will recreate the wsgi app (and storage and index) for every test method call in that class.
author Thomas Waldmann <tw AT waldmann-edv DOT de>
date Thu, 27 Oct 2011 21:47:26 -0200
parents 57ac61f78053
children 1aa200340d17 8c275efc6e8c
rev   line source
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1 # Copyright: 2000-2006 by Juergen Hermann <jh@web.de>
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2 # Copyright: 2002-2011 MoinMoin:ThomasWaldmann
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3 # Copyright: 2008 MoinMoin:FlorianKrupicka
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4 # Copyright: 2010 MoinMoin:DiogenesAugusto
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5 # License: GNU GPL v2 (or any later version), see LICENSE.txt for details.
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6
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7 """
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8 MoinMoin - wsgi application setup and related code
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9
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10 Use create_app(config) to create the WSGI application (using Flask).
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11 """
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12
134
901bd4e1861e import absolute_import, division from __future__ in every module
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13 from __future__ import absolute_import, division
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14
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15 # do this early, but not in MoinMoin/__init__.py because we need to be able to
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16 # "import MoinMoin" from setup.py even before flask, werkzeug, ... is installed.
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17 from MoinMoin.util import monkeypatch
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18
109
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19 from flask import Flask, request, session
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20 from flask import current_app as app
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21 from flask import g as flaskg
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22
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23 from flaskext.cache import Cache
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24 from flaskext.themes import setup_themes
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25
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26 from jinja2 import ChoiceLoader, FileSystemLoader
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27
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28 from MoinMoin import log
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29 logging = log.getLogger(__name__)
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30
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31 from MoinMoin.i18n import i18n_init
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32 from MoinMoin.i18n import _, L_, N_
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33
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34 from MoinMoin.themes import setup_jinja_env, themed_error
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35
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36 from MoinMoin.util.clock import Clock
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37
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38
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39 def create_app(config=None, create_index=False, create_storage=False):
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40 """
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41 simple wrapper around create_app_ext() for flask-script
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42 """
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43 return create_app_ext(flask_config_file=config,
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44 create_index=create_index,
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45 create_storage=create_storage)
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47
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48 def create_app_ext(flask_config_file=None, flask_config_dict=None,
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49 moin_config_class=None, warn_default=True, **kwargs
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50 ):
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51 """
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52 Factory for moin wsgi apps
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53
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54 :param flask_config_file: a flask config file name (may have a MOINCFG class),
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55 if not given, a config pointed to by MOINCFG env var
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56 will be loaded (if possible).
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57 :param flask_config_dict: a dict used to update flask config (applied after
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58 flask_config_file was loaded [if given])
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59 :param moin_config_class: if you give this, it'll be instantiated as app.cfg,
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60 otherwise it'll use MOINCFG from flask config. If that
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61 also is not there, it'll use the DefaultConfig built
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62 into MoinMoin.
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63 :param warn_default: emit a warning if moin falls back to its builtin default
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64 config (maybe user forgot to specify MOINCFG?)
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65 :param kwargs: if you give additional keyword args, the keys/values will get patched
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66 into the moin configuration class (before its instance is created)
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67 """
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68 clock = Clock()
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69 clock.start('create_app total')
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70 app = Flask('MoinMoin')
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71 clock.start('create_app load config')
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72 if flask_config_file:
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73 app.config.from_pyfile(flask_config_file)
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74 else:
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75 if not app.config.from_envvar('MOINCFG', silent=True):
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76 # no MOINCFG env variable set, try stuff in cwd:
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77 from os import path
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78 flask_config_file = path.abspath('wikiconfig_local.py')
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79 if not path.exists(flask_config_file):
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80 flask_config_file = path.abspath('wikiconfig.py')
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81 if not path.exists(flask_config_file):
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82 flask_config_file = None
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83 if flask_config_file:
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84 app.config.from_pyfile(flask_config_file)
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85 if flask_config_dict:
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86 app.config.update(flask_config_dict)
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87 Config = moin_config_class
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88 if not Config:
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89 Config = app.config.get('MOINCFG')
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90 if not Config:
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91 if warn_default:
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92 logging.warning("using builtin default configuration")
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93 from MoinMoin.config.default import DefaultConfig as Config
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94 for key, value in kwargs.iteritems():
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95 setattr(Config, key, value)
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96 if Config.secrets is None:
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97 # reuse the secret configured for flask (which is required for sessions)
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98 Config.secrets = app.config.get('SECRET_KEY')
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99 app.cfg = Config()
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100 clock.stop('create_app load config')
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101 clock.start('create_app register')
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102 # register converters
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103 from werkzeug.routing import PathConverter
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104 app.url_map.converters['itemname'] = PathConverter
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105 # register modules, before/after request functions
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106 from MoinMoin.apps.frontend import frontend
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107 frontend.before_request(before_wiki)
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108 frontend.teardown_request(teardown_wiki)
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109 app.register_blueprint(frontend)
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110 from MoinMoin.apps.admin import admin
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111 admin.before_request(before_wiki)
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112 admin.teardown_request(teardown_wiki)
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113 app.register_blueprint(admin, url_prefix='/+admin')
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114 from MoinMoin.apps.feed import feed
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115 feed.before_request(before_wiki)
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116 feed.teardown_request(teardown_wiki)
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117 app.register_blueprint(feed, url_prefix='/+feed')
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118 from MoinMoin.apps.misc import misc
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119 misc.before_request(before_wiki)
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120 misc.teardown_request(teardown_wiki)
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121 app.register_blueprint(misc, url_prefix='/+misc')
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122 from MoinMoin.apps.serve import serve
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123 app.register_blueprint(serve, url_prefix='/+serve')
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124 clock.stop('create_app register')
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125 clock.start('create_app flask-cache')
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126 cache = Cache()
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127 cache.init_app(app)
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128 app.cache = cache
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129 clock.stop('create_app flask-cache')
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130 # init storage
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131 clock.start('create_app init backends')
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132 init_backends(app)
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133 clock.stop('create_app init backends')
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134 clock.start('create_app flask-babel')
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135 i18n_init(app)
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136 clock.stop('create_app flask-babel')
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137 # configure templates
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138 clock.start('create_app flask-themes')
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139 setup_themes(app)
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140 if app.cfg.template_dirs:
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141 app.jinja_env.loader = ChoiceLoader([
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142 FileSystemLoader(app.cfg.template_dirs),
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143 app.jinja_env.loader,
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144 ])
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145 app.register_error_handler(403, themed_error)
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146 clock.stop('create_app flask-themes')
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147 clock.stop('create_app total')
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148 del clock
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149 return app
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150
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151
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152 def destroy_app(app):
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153 deinit_backends(app)
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154
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155
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156 from MoinMoin.storage.middleware import protecting, indexing, routing
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157 from MoinMoin import auth, config, user
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158
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159
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160 def init_backends(app):
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161 """
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162 initialize the backends
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163 """
0
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164 # A ns_mapping consists of several lines, where each line is made up like this:
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165 # mountpoint, unprotected backend
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166 # Just initialize with unprotected backends.
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167 app.router = routing.Backend(app.cfg.namespace_mapping)
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168 if app.cfg.create_storage:
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169 app.router.create()
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170 app.router.open()
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171 app.storage = indexing.IndexingMiddleware(app.cfg.index_dir, app.router,
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172 wiki_name=app.cfg.interwikiname,
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173 acl_rights_contents=app.cfg.acl_rights_contents)
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174 if app.cfg.create_index:
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175 app.storage.create()
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176 app.storage.open()
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177
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178
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179 def deinit_backends(app):
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180 app.storage.close()
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181 app.router.close()
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182 if app.cfg.destroy_index:
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183 app.storage.destroy()
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184 if app.cfg.destroy_storage:
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185 app.router.destroy()
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186
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187
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188 def setup_user():
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189 """
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190 Try to retrieve a valid user object from the request, be it
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191 either through the session or through a login.
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192 """
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193 # init some stuff for auth processing:
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194 flaskg._login_multistage = None
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195 flaskg._login_multistage_name = None
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196 flaskg._login_messages = []
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197
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198 # first try setting up from session
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199 userobj = auth.setup_from_session()
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200
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201 # then handle login/logout forms
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202 form = request.values.to_dict()
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203 if 'login_submit' in form:
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204 # this is a real form, submitted by POST
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205 userobj = auth.handle_login(userobj, **form)
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206 elif 'logout_submit' in form:
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207 # currently just a GET link
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208 userobj = auth.handle_logout(userobj)
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209 else:
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210 userobj = auth.handle_request(userobj)
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211
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212 # if we still have no user obj, create a dummy:
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213 if not userobj:
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214 userobj = user.User(auth_method='invalid')
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215 # if we have a valid user we store it in the session
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216 if userobj.valid:
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217 # TODO: auth_trusted should be set by the auth method (auth class
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218 # could have a param where the admin could tell whether he wants to
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219 # trust it)
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220 userobj.auth_trusted = userobj.auth_method in app.cfg.auth_methods_trusted
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221 session['user.itemid'] = userobj.itemid
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222 session['user.auth_method'] = userobj.auth_method
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223 session['user.auth_attribs'] = userobj.auth_attribs
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224 return userobj
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225
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226
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227 def before_wiki():
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228 """
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229 Setup environment for wiki requests, start timers.
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230 """
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231 logging.debug("running before_wiki")
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232 flaskg.clock = Clock()
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233 flaskg.clock.start('total')
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234 flaskg.clock.start('init')
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235 try:
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236 flaskg.unprotected_storage = app.storage
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237
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238 flaskg.user = setup_user()
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239 flaskg.storage = protecting.ProtectingMiddleware(app.storage, flaskg.user, app.cfg.acl_mapping)
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240
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241 flaskg.dicts = app.cfg.dicts()
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242 flaskg.groups = app.cfg.groups()
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243
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244 flaskg.content_lang = app.cfg.language_default
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245 flaskg.current_lang = app.cfg.language_default
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246
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247 setup_jinja_env()
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248 finally:
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249 flaskg.clock.stop('init')
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250
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251 # if return value is not None, it is the final response
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252
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253
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254 def teardown_wiki(response):
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255 """
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256 Teardown environment of wiki requests, stop timers.
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257 """
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258 logging.debug("running teardown_wiki")
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259 try:
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260 flaskg.clock.stop('total')
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261 del flaskg.clock
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262 except AttributeError:
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263 # can happen if teardown_wiki() is called twice, e.g. by unit tests.
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264 pass
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265 return response
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266