Mercurial > libervia-web
annotate src/server/pages.py @ 1031:4ba7df23b976
pages: new method getURLByNames to retrieve URL from list of page names/path arguments
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Mon, 22 Jan 2018 22:17:20 +0100 |
| parents | 66a050b32df8 |
| children | 863cc6f97068 |
| rev | line source |
|---|---|
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1 #!/usr/bin/python |
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2 # -*- coding: utf-8 -*- |
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3 |
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4 # Libervia: a Salut à Toi frontend |
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5 # Copyright (C) 2011-2017 Jérôme Poisson <goffi@goffi.org> |
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6 |
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7 # This program is free software: you can redistribute it and/or modify |
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8 # it under the terms of the GNU Affero General Public License as published by |
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9 # the Free Software Foundation, either version 3 of the License, or |
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10 # (at your option) any later version. |
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11 |
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12 # This program is distributed in the hope that it will be useful, |
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 # GNU Affero General Public License for more details. |
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16 |
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17 # You should have received a copy of the GNU Affero General Public License |
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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19 from twisted.web import server |
| 858 | 20 from twisted.web import resource as web_resource |
| 21 from twisted.web import util as web_util | |
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22 from twisted.internet import defer |
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23 from twisted.words.protocols.jabber import jid |
| 917 | 24 from twisted.python import failure |
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25 |
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26 from sat.core.i18n import _ |
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27 from sat.core import exceptions |
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28 from sat.tools.common import uri as common_uri |
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29 from sat.tools import utils |
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30 from sat.core.log import getLogger |
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31 log = getLogger(__name__) |
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32 from libervia.server.constants import Const as C |
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33 from libervia.server import session_iface |
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34 from libervia.server.utils import quote |
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35 import libervia |
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36 |
| 995 | 37 from collections import namedtuple |
| 38 import uuid | |
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39 import os.path |
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40 import urllib |
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41 import time |
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42 import hashlib |
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43 |
| 995 | 44 WebsocketMeta = namedtuple("WebsocketMeta", ('url', 'token', 'debug')) |
| 45 | |
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46 |
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47 |
| 1018 | 48 class CacheBase(object): |
| 49 | |
| 50 def __init__(self): | |
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51 self._created = time.time() |
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52 self._last_access = self._created |
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53 |
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54 @property |
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55 def created(self): |
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56 return self._created |
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57 |
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58 @property |
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59 def last_access(self): |
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60 return self._last_access |
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61 |
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62 @last_access.setter |
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63 def last_access(self, timestamp): |
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64 self._last_access = timestamp |
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65 |
| 1018 | 66 |
| 67 class CachePage(CacheBase): | |
| 68 | |
| 69 def __init__(self, rendered): | |
| 70 super(CachePage, self).__init__() | |
| 71 self._created = time.time() | |
| 72 self._last_access = self._created | |
| 73 self._rendered = rendered | |
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74 self._hash = hashlib.sha256(rendered).hexdigest() |
| 1018 | 75 |
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76 @property |
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77 def rendered(self): |
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78 return self._rendered |
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79 |
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80 @property |
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81 def hash(self): |
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82 return self._hash |
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83 |
| 1018 | 84 |
| 85 class CacheURL(CacheBase): | |
| 86 | |
| 87 def __init__(self, request): | |
| 88 super(CacheURL, self).__init__() | |
| 89 try: | |
| 90 self._data = request.data.copy() | |
| 91 except AttributeError: | |
| 92 self._data = {} | |
| 93 self._template_data = request.template_data.copy() | |
| 94 self._prepath = request.prepath[:] | |
| 95 self._postpath = request.postpath[:] | |
| 96 del self._template_data['csrf_token'] | |
| 97 | |
| 98 def use(self, request): | |
| 99 self.last_access = time.time() | |
| 100 request.data = self._data.copy() | |
| 101 request.template_data.update(self._template_data) | |
| 102 request.prepath = self._prepath[:] | |
| 103 request.postpath = self._postpath[:] | |
| 104 | |
| 105 | |
| 917 | 106 class LiberviaPage(web_resource.Resource): |
| 107 isLeaf = True # we handle subpages ourself | |
| 108 named_pages = {} | |
| 925 | 109 uri_callbacks = {} |
| 995 | 110 signals_handlers = {} |
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111 pages_redirects = {} |
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112 cache = {} |
| 1018 | 113 cached_urls = {} |
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114 # Set of tuples (service/node/sub_id) of nodes subscribed for caching |
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115 # sub_id can be empty string if not handled by service |
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116 cache_pubsub_sub = set() |
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117 main_menu = None |
| 917 | 118 |
| 995 | 119 def __init__(self, host, root_dir, url, name=None, redirect=None, access=None, dynamic=False, parse_url=None, |
| 120 prepare_render=None, render=None, template=None, | |
| 1018 | 121 on_data_post=None, on_data=None, on_signal=None, |
| 122 url_cache=False): | |
| 917 | 123 """initiate LiberviaPages |
| 124 | |
| 125 LiberviaPages are the main resources of Libervia, using easy to set python files | |
| 126 The arguments are the variables found in page_meta.py | |
| 127 @param host(Libervia): the running instance of Libervia | |
| 962 | 128 @param root_dir(unicode): aboslute file path of the page |
| 129 @param url(unicode): relative URL to the page | |
| 130 this URL may not be valid, as pages may require path arguments | |
| 917 | 131 @param name(unicode, None): if not None, a unique name to identify the page |
| 132 can then be used for e.g. redirection | |
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133 "/" is not allowed in names (as it can be used to construct URL paths) |
| 962 | 134 @param redirect(unicode, None): if not None, this page will be redirected. A redirected |
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135 parameter is used as in self.pageRedirect. parse_url will not be skipped |
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136 using this redirect parameter is called "full redirection" |
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137 using self.pageRedirect is called "partial redirection" (because some rendering method |
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138 can still be used, e.g. parse_url) |
| 917 | 139 @param access(unicode, None): permission needed to access the page |
| 140 None means public access. | |
| 141 Pages inherit from parent pages: e.g. if a "settings" page is restricted to admins, | |
| 142 and if "settings/blog" is public, it still can only be accessed by admins. | |
| 143 see C.PAGES_ACCESS_* for details | |
| 995 | 144 @param dynamic(bool): if True, activate websocket for bidirectional communication |
| 917 | 145 @param parse_url(callable, None): if set it will be called to handle the URL path |
| 146 after this method, the page will be rendered if noting is left in path (request.postpath) | |
| 147 else a the request will be transmitted to a subpage | |
| 148 @param prepare_render(callable, None): if set, will be used to prepare the rendering | |
| 149 that often means gathering data using the bridge | |
| 150 @param render(callable, None): if not template is set, this method will be called and | |
| 151 what it returns will be rendered. | |
| 152 This method is mutually exclusive with template and must return a unicode string. | |
| 153 @param template(unicode, None): path to the template to render. | |
| 154 This method is mutually exclusive with render | |
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155 @param on_data_post(callable, None): method to call when data is posted |
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156 None if not post is handled |
| 962 | 157 on_data_post can return a string with following value: |
| 158 - C.POST_NO_CONFIRM: confirm flag will not be set | |
| 995 | 159 @param on_data(callable, None): method to call when dynamic data is sent |
| 160 this method is used with Libervia's websocket mechanism | |
| 161 @param on_signal(callable, None): method to call when a registered signal is received | |
| 162 this method is used with Libervia's websocket mechanism | |
| 917 | 163 """ |
| 164 | |
| 165 web_resource.Resource.__init__(self) | |
| 166 self.host = host | |
| 167 self.root_dir = root_dir | |
| 962 | 168 self.url = url |
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169 self.name = name |
| 917 | 170 if name is not None: |
| 171 if name in self.named_pages: | |
| 172 raise exceptions.ConflictError(_(u'a Libervia page named "{}" already exists'.format(name))) | |
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173 if u'/' in name: |
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174 raise ValueError(_(u'"/" is not allowed in page names')) |
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175 if not name: |
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176 raise ValueError(_(u"a page name can't be empty")) |
| 917 | 177 self.named_pages[name] = self |
| 178 if access is None: | |
| 179 access = C.PAGES_ACCESS_PUBLIC | |
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180 if access not in (C.PAGES_ACCESS_PUBLIC, C.PAGES_ACCESS_PROFILE, C.PAGES_ACCESS_NONE): |
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181 raise NotImplementedError(_(u"{} access is not implemented yet").format(access)) |
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182 self.access = access |
| 995 | 183 self.dynamic = dynamic |
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184 if redirect is not None: |
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185 # only page access and name make sense in case of full redirection |
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186 # so we check that rendering methods/values are not set |
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187 if not all(lambda x: x is not None |
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188 for x in (parse_url, prepare_render, render, template)): |
|
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189 raise ValueError(_(u"you can't use full page redirection with other rendering method," |
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190 u"check self.pageRedirect if you need to use them")) |
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191 self.redirect = redirect |
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192 else: |
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193 self.redirect = None |
| 917 | 194 self.parse_url = parse_url |
| 195 self.prepare_render = prepare_render | |
| 196 self.template = template | |
| 197 self.render_method = render | |
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198 self.on_data_post = on_data_post |
| 995 | 199 self.on_data = on_data |
| 200 self.on_signal = on_signal | |
| 1018 | 201 self.url_cache = url_cache |
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202 if access == C.PAGES_ACCESS_NONE: |
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203 # none pages just return a 404, no further check is needed |
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204 return |
| 917 | 205 if template is None: |
| 206 if not callable(render): | |
| 207 log.error(_(u"render must be implemented and callable if template is not set")) | |
| 208 else: | |
| 209 if render is not None: | |
| 210 log.error(_(u"render can't be used at the same time as template")) | |
| 211 if parse_url is not None and not callable(parse_url): | |
| 212 log.error(_(u"parse_url must be a callable")) | |
| 213 | |
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214 # if not None, next rendering will be cached |
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215 # it must then contain a list of the the keys to use (without the page instance) |
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216 # e.g. [C.SERVICE_PROFILE, "pubsub", server@example.tld, pubsub_node] |
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217 self._do_cache = None |
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218 |
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219 def __unicode__(self): |
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220 return u'LiberviaPage {name} at {url}'.format( |
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221 name = self.name or u'<anonymous>', |
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222 url = self.url) |
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223 |
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224 def __str__(self): |
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225 return self.__unicode__().encode('utf-8') |
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226 |
| 925 | 227 @classmethod |
| 228 def importPages(cls, host, parent=None, path=None): | |
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229 """Recursively import Libervia pages""" |
| 917 | 230 if path is None: |
| 231 path = [] | |
| 232 if parent is None: | |
| 233 root_dir = os.path.join(os.path.dirname(libervia.__file__), C.PAGES_DIR) | |
| 234 parent = host | |
| 235 else: | |
| 236 root_dir = parent.root_dir | |
| 237 for d in os.listdir(root_dir): | |
| 238 dir_path = os.path.join(root_dir, d) | |
| 239 if not os.path.isdir(dir_path): | |
| 240 continue | |
| 241 meta_path = os.path.join(dir_path, C.PAGES_META_FILE) | |
| 242 if os.path.isfile(meta_path): | |
| 243 page_data = {} | |
| 962 | 244 new_path = path + [d] |
| 917 | 245 # we don't want to force the presence of __init__.py |
| 246 # so we use execfile instead of import. | |
| 247 # TODO: when moved to Python 3, __init__.py is not mandatory anymore | |
| 248 # so we can switch to import | |
| 249 execfile(meta_path, page_data) | |
| 250 resource = LiberviaPage( | |
| 251 host, | |
| 252 dir_path, | |
| 962 | 253 u'/' + u'/'.join(new_path), |
| 917 | 254 name=page_data.get('name'), |
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255 redirect=page_data.get('redirect'), |
| 917 | 256 access=page_data.get('access'), |
| 995 | 257 dynamic=page_data.get('dynamic', False), |
| 917 | 258 parse_url=page_data.get('parse_url'), |
| 259 prepare_render=page_data.get('prepare_render'), | |
| 260 render=page_data.get('render'), | |
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261 template=page_data.get('template'), |
| 995 | 262 on_data_post=page_data.get('on_data_post'), |
| 263 on_data=page_data.get('on_data'), | |
| 264 on_signal=page_data.get('on_signal'), | |
| 1018 | 265 url_cache=page_data.get('url_cache', False), |
| 995 | 266 ) |
| 917 | 267 parent.putChild(d, resource) |
| 268 log.info(u"Added /{path} page".format(path=u'[...]/'.join(new_path))) | |
| 925 | 269 if 'uri_handlers' in page_data: |
| 270 if not isinstance(page_data, dict): | |
| 271 log.error(_(u'uri_handlers must be a dict')) | |
| 272 else: | |
| 273 for uri_tuple, cb_name in page_data['uri_handlers'].iteritems(): | |
| 274 if len(uri_tuple) != 2 or not isinstance(cb_name, basestring): | |
| 275 log.error(_(u"invalid uri_tuple")) | |
| 276 continue | |
| 277 log.info(_(u'setting {}/{} URIs handler').format(*uri_tuple)) | |
| 278 try: | |
| 279 cb = page_data[cb_name] | |
| 280 except KeyError: | |
| 281 log.error(_(u'missing {name} method to handle {1}/{2}').format( | |
| 282 name = cb_name, *uri_tuple)) | |
| 283 continue | |
| 284 else: | |
| 285 cls.registerURI(uri_tuple, cb, new_path) | |
| 286 | |
| 917 | 287 LiberviaPage.importPages(host, resource, new_path) |
| 288 | |
| 925 | 289 @classmethod |
|
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290 def setMenu(cls, menus): |
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291 main_menu = [] |
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292 for menu in menus: |
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293 if not menu: |
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294 msg = _(u"menu item can't be empty") |
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295 log.error(msg) |
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296 raise ValueError(msg) |
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297 elif isinstance(menu, list): |
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298 if len(menu) != 2: |
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299 msg = _(u"menu item as list must be in the form [page_name, absolue URL]") |
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300 log.error(msg) |
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301 raise ValueError(msg) |
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302 page_name, url = menu |
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303 else: |
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304 page_name = menu |
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305 try: |
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306 url = cls.getPageByName(page_name).url |
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307 except KeyError as e: |
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308 log.error(_(u"Can'find a named page ({msg}), please check menu_json in configuration.").format(msg=e)) |
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309 raise e |
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310 main_menu.append((page_name, url)) |
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311 cls.main_menu = main_menu |
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312 |
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313 @classmethod |
| 925 | 314 def registerURI(cls, uri_tuple, get_uri_cb, pre_path): |
| 315 """register a URI handler | |
| 316 | |
| 317 @param uri_tuple(tuple[unicode, unicode]): type or URIs handler | |
| 318 type/subtype as returned by tools/common/parseXMPPUri | |
| 319 @param get_uri_cb(callable): method which take uri_data dict as only argument | |
| 320 and return path with correct arguments relative to page itself | |
| 321 @param pre_path(list[unicode]): prefix path to reference the handler page | |
| 322 """ | |
| 323 if uri_tuple in cls.uri_callbacks: | |
| 324 log.info(_(u"{}/{} URIs are already handled, replacing by the new handler").format(*uri_tuple)) | |
| 325 cls.uri_callbacks[uri_tuple] = {u'callback': get_uri_cb, | |
| 326 u'pre_path': pre_path} | |
| 327 | |
| 995 | 328 def registerSignal(self, request, signal, check_profile=True): |
| 329 r"""register a signal handler | |
| 330 | |
| 331 the page must be dynamic | |
| 332 when signal is received, self.on_signal will be called with: | |
| 333 - request | |
| 334 - signal name | |
| 335 - signal arguments | |
| 336 signal handler will be removed when connection with dynamic page will be lost | |
| 337 @param signal(unicode): name of the signal | |
| 338 last arg of signal must be profile, as it will be checked to filter signals | |
| 339 @param check_profile(bool): if True, signal profile (which MUST be last arg) will be | |
| 340 checked against session profile. | |
| 341 /!\ if False, profile will not be checked/filtered, be sure to know what you are doing | |
| 342 if you unset this option /!\ | |
| 343 """ | |
| 344 # FIXME: add a timeout, if socket is not opened before it, signal handler must be removed | |
| 345 if not self.dynamic: | |
| 346 log.error(_(u"You can't register signal if page is not dynamic")) | |
| 347 return | |
| 348 LiberviaPage.signals_handlers.setdefault(signal, {})[id(request)] = (self, request, check_profile) | |
| 349 request._signals_registered.append(signal) | |
| 350 | |
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351 def getPagePathFromURI(self, uri): |
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352 """Retrieve page URL from xmpp: URI |
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353 |
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354 @param uri(unicode): URI with a xmpp: scheme |
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355 @return (unicode,None): absolute path (starting from root "/") to page handling the URI |
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356 None is returned if not page has been registered for this URI |
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357 """ |
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358 uri_data = common_uri.parseXMPPUri(uri) |
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359 try: |
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360 callback_data = self.uri_callbacks[uri_data['type'], uri_data.get('sub_type')] |
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361 except KeyError: |
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362 return |
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363 else: |
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364 url = os.path.join(u'/', u'/'.join(callback_data['pre_path']), callback_data['callback'](self, uri_data)) |
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365 return url |
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366 |
| 979 | 367 @classmethod |
| 368 def getPageByName(cls, name): | |
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369 """retrieve page instance from its name |
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370 |
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371 @param name(unicode): name of the page |
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372 @return (LiberviaPage): page instance |
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373 @raise KeyError: the page doesn't exist |
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374 """ |
| 979 | 375 return cls.named_pages[name] |
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376 |
| 962 | 377 def getPageRedirectURL(self, request, page_name=u'login', url=None): |
| 378 """generate URL for a page with redirect_url parameter set | |
| 379 | |
| 380 mainly used for login page with redirection to current page | |
| 381 @param request(server.Request): current HTTP request | |
| 382 @param page_name(unicode): name of the page to go | |
| 383 @param url(None, unicode): url to redirect to | |
| 384 None to use request path (i.e. current page) | |
| 385 @return (unicode): URL to use | |
| 386 """ | |
| 387 return u'{root_url}?redirect_url={redirect_url}'.format( | |
| 388 root_url = self.getPageByName(page_name).url, | |
| 389 redirect_url=urllib.quote_plus(request.uri) if url is None else url.encode('utf-8')) | |
| 390 | |
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391 def getURL(self, *args): |
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392 """retrieve URL of the page set arguments |
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|
393 |
|
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|
394 *args(list[unicode]): argument to add to the URL as path elements |
|
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395 empty or None arguments will be ignored |
|
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396 """ |
|
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397 url_args = [quote(a) for a in args if a] |
|
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|
398 |
|
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|
399 if self.name is not None and self.name in self.pages_redirects: |
|
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|
400 # we check for redirection |
|
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401 redirect_data = self.pages_redirects[self.name] |
|
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402 args_hash = tuple(args) |
|
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|
403 for limit in xrange(len(args)+1): |
|
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|
404 current_hash = args_hash[:limit] |
|
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|
405 if current_hash in redirect_data: |
|
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|
406 url_base = redirect_data[current_hash] |
|
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407 remaining = args[limit:] |
|
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408 remaining_url = '/'.join(remaining) |
|
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409 return os.path.join('/', url_base, remaining_url) |
|
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|
410 |
|
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411 return os.path.join(self.url, *url_args) |
|
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|
412 |
|
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|
413 def getCurrentURL(self, request): |
| 1015 | 414 """retrieve URL used to access this page |
|
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415 |
|
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|
416 @return(unicode): current URL |
|
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417 """ |
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|
418 # we get url in the following way (splitting request.path instead of using |
|
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419 # request.prepath) because request.prepath may have been modified by |
|
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420 # redirection (if redirection args have been specified), while path reflect |
|
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421 # the real request |
|
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|
422 |
|
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|
423 # we ignore empty path elements (i.e. double '/' or '/' at the end) |
|
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424 path_elts = [p for p in request.path.split('/') if p] |
|
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|
425 |
|
4de970de87d7
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|
426 if request.postpath: |
|
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|
427 if not request.postpath[-1]: |
|
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|
428 # we remove trailing slash |
|
4de970de87d7
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|
429 request.postpath = request.postpath[:-1] |
|
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430 if request.postpath: |
|
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changeset
|
431 # getSubPageURL must return subpage from the point where |
|
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432 # the it is called, so we have to remove remanining |
|
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433 # path elements |
|
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|
434 path_elts = path_elts[:-len(request.postpath)] |
|
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|
435 |
|
4de970de87d7
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diff
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|
436 return u'/' + '/'.join(path_elts).decode('utf-8') |
|
4de970de87d7
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parents:
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|
437 |
|
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|
438 def getParamURL(self, request, **kwargs): |
|
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|
439 """use URL of current request but modify the parameters in query part |
|
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|
440 |
|
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|
441 **kwargs(dict[str, unicode]): argument to use as query parameters |
|
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442 @return (unicode): constructed URL |
|
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|
443 """ |
|
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444 current_url = self.getCurrentURL(request) |
|
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445 if kwargs: |
|
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parents:
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|
446 encoded = urllib.urlencode({k:v.encode('utf-8') for k,v in kwargs.iteritems()}).decode('utf-8') |
|
4de970de87d7
pages: added getCurrentURL and getParamURL:
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|
447 current_url = current_url + u'?' + encoded |
|
4de970de87d7
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|
448 return current_url |
|
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pages: added getCurrentURL and getParamURL:
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diff
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|
449 |
|
1030
66a050b32df8
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parents:
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diff
changeset
|
450 def getSubPageByName(self, page, subpage_name): |
|
66a050b32df8
pages: moved code getting subpage from getSubPageURL to new getSubPageByName method.
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parents:
1019
diff
changeset
|
451 """retrieve a subpage and its path using its name |
|
66a050b32df8
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parents:
1019
diff
changeset
|
452 |
|
66a050b32df8
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diff
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|
453 @param request(server.Request): current HTTP request |
|
66a050b32df8
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diff
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|
454 @param page_name(unicode): name of the page to retrieve |
|
66a050b32df8
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diff
changeset
|
455 it must be a direct children of current page |
|
66a050b32df8
pages: moved code getting subpage from getSubPageURL to new getSubPageByName method.
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diff
changeset
|
456 @return (tuple[str, LiberviaPage]): page subpath and instance |
|
66a050b32df8
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|
457 @raise exceptions.NotFound: no page has been found |
|
66a050b32df8
pages: moved code getting subpage from getSubPageURL to new getSubPageByName method.
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|
458 """ |
|
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pages: moved code getting subpage from getSubPageURL to new getSubPageByName method.
Goffi <goffi@goffi.org>
parents:
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diff
changeset
|
459 for path, child in page.children.iteritems(): |
|
66a050b32df8
pages: moved code getting subpage from getSubPageURL to new getSubPageByName method.
Goffi <goffi@goffi.org>
parents:
1019
diff
changeset
|
460 try: |
|
66a050b32df8
pages: moved code getting subpage from getSubPageURL to new getSubPageByName method.
Goffi <goffi@goffi.org>
parents:
1019
diff
changeset
|
461 child_name = child.name |
|
66a050b32df8
pages: moved code getting subpage from getSubPageURL to new getSubPageByName method.
Goffi <goffi@goffi.org>
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1019
diff
changeset
|
462 except AttributeError: |
|
66a050b32df8
pages: moved code getting subpage from getSubPageURL to new getSubPageByName method.
Goffi <goffi@goffi.org>
parents:
1019
diff
changeset
|
463 # LiberviaPages have a name, but maybe this is an other Resource |
|
66a050b32df8
pages: moved code getting subpage from getSubPageURL to new getSubPageByName method.
Goffi <goffi@goffi.org>
parents:
1019
diff
changeset
|
464 continue |
|
66a050b32df8
pages: moved code getting subpage from getSubPageURL to new getSubPageByName method.
Goffi <goffi@goffi.org>
parents:
1019
diff
changeset
|
465 if child_name == subpage_name: |
|
66a050b32df8
pages: moved code getting subpage from getSubPageURL to new getSubPageByName method.
Goffi <goffi@goffi.org>
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1019
diff
changeset
|
466 return path, child |
|
66a050b32df8
pages: moved code getting subpage from getSubPageURL to new getSubPageByName method.
Goffi <goffi@goffi.org>
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diff
changeset
|
467 raise exceptions.NotFound(_(u'requested sub page has not been found')) |
|
66a050b32df8
pages: moved code getting subpage from getSubPageURL to new getSubPageByName method.
Goffi <goffi@goffi.org>
parents:
1019
diff
changeset
|
468 |
|
980
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core (pages redirection): inverted redirection + getSubPageURL:
Goffi <goffi@goffi.org>
parents:
979
diff
changeset
|
469 def getSubPageURL(self, request, page_name, *args): |
|
bcacf970f970
core (pages redirection): inverted redirection + getSubPageURL:
Goffi <goffi@goffi.org>
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979
diff
changeset
|
470 """retrieve a page in direct children and build its URL according to request |
|
bcacf970f970
core (pages redirection): inverted redirection + getSubPageURL:
Goffi <goffi@goffi.org>
parents:
979
diff
changeset
|
471 |
|
bcacf970f970
core (pages redirection): inverted redirection + getSubPageURL:
Goffi <goffi@goffi.org>
parents:
979
diff
changeset
|
472 request's current path is used as base (at current parsing point, |
|
bcacf970f970
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Goffi <goffi@goffi.org>
parents:
979
diff
changeset
|
473 i.e. it's more prepath than path). |
|
bcacf970f970
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Goffi <goffi@goffi.org>
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979
diff
changeset
|
474 Requested page is checked in children and an absolute URL is then built |
|
bcacf970f970
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979
diff
changeset
|
475 by the resulting combination. |
|
bcacf970f970
core (pages redirection): inverted redirection + getSubPageURL:
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parents:
979
diff
changeset
|
476 This method is useful to construct absolute URLs for children instead of |
|
bcacf970f970
core (pages redirection): inverted redirection + getSubPageURL:
Goffi <goffi@goffi.org>
parents:
979
diff
changeset
|
477 using relative path, which may not work in subpages, and are linked to the |
|
bcacf970f970
core (pages redirection): inverted redirection + getSubPageURL:
Goffi <goffi@goffi.org>
parents:
979
diff
changeset
|
478 names of directories (i.e. relative URL will break if subdirectory is renamed |
|
bcacf970f970
core (pages redirection): inverted redirection + getSubPageURL:
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979
diff
changeset
|
479 while getSubPageURL won't as long as page_name is consistent). |
|
bcacf970f970
core (pages redirection): inverted redirection + getSubPageURL:
Goffi <goffi@goffi.org>
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979
diff
changeset
|
480 Also, request.path is used, keeping real path used by user, |
|
bcacf970f970
core (pages redirection): inverted redirection + getSubPageURL:
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parents:
979
diff
changeset
|
481 and potential redirections. |
|
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core (pages redirection): inverted redirection + getSubPageURL:
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979
diff
changeset
|
482 @param request(server.Request): current HTTP request |
|
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Goffi <goffi@goffi.org>
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979
diff
changeset
|
483 @param page_name(unicode): name of the page to retrieve |
|
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Goffi <goffi@goffi.org>
parents:
979
diff
changeset
|
484 it must be a direct children of current page |
|
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core (pages redirection): inverted redirection + getSubPageURL:
Goffi <goffi@goffi.org>
parents:
979
diff
changeset
|
485 @param *args(list[unicode]): arguments to add as path elements |
|
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979
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changeset
|
486 @return unicode: absolute URL to the sub page |
|
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parents:
979
diff
changeset
|
487 """ |
|
1010
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1009
diff
changeset
|
488 current_url = self.getCurrentURL(request) |
|
1030
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Goffi <goffi@goffi.org>
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1019
diff
changeset
|
489 path, child = self.getSubPageByName(self, page_name) |
|
66a050b32df8
pages: moved code getting subpage from getSubPageURL to new getSubPageByName method.
Goffi <goffi@goffi.org>
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1019
diff
changeset
|
490 return os.path.join(u'/', current_url, path, *[quote(a) for a in args]) |
|
980
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core (pages redirection): inverted redirection + getSubPageURL:
Goffi <goffi@goffi.org>
parents:
979
diff
changeset
|
491 |
|
1031
4ba7df23b976
pages: new method getURLByNames to retrieve URL from list of page names/path arguments
Goffi <goffi@goffi.org>
parents:
1030
diff
changeset
|
492 def getURLByNames(self, named_path): |
|
4ba7df23b976
pages: new method getURLByNames to retrieve URL from list of page names/path arguments
Goffi <goffi@goffi.org>
parents:
1030
diff
changeset
|
493 """retrieve URL from pages names and arguments |
|
4ba7df23b976
pages: new method getURLByNames to retrieve URL from list of page names/path arguments
Goffi <goffi@goffi.org>
parents:
1030
diff
changeset
|
494 |
|
4ba7df23b976
pages: new method getURLByNames to retrieve URL from list of page names/path arguments
Goffi <goffi@goffi.org>
parents:
1030
diff
changeset
|
495 @param named_path(list[tuple[unicode, list[unicode]]]): path to the page as a list |
|
4ba7df23b976
pages: new method getURLByNames to retrieve URL from list of page names/path arguments
Goffi <goffi@goffi.org>
parents:
1030
diff
changeset
|
496 of tuples of 2 items: |
|
4ba7df23b976
pages: new method getURLByNames to retrieve URL from list of page names/path arguments
Goffi <goffi@goffi.org>
parents:
1030
diff
changeset
|
497 - first item is page name |
|
4ba7df23b976
pages: new method getURLByNames to retrieve URL from list of page names/path arguments
Goffi <goffi@goffi.org>
parents:
1030
diff
changeset
|
498 - second item is list of path arguments of this page |
|
4ba7df23b976
pages: new method getURLByNames to retrieve URL from list of page names/path arguments
Goffi <goffi@goffi.org>
parents:
1030
diff
changeset
|
499 @return (unicode): URL to the requested page with given path arguments |
|
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500 @raise exceptions.NotFound: one of the page was not found |
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501 """ |
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502 current_page = None |
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503 path = [] |
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504 for page_name, page_args in named_path: |
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505 if current_page is None: |
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506 current_page = self.getPageByName(page_name) |
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507 path.append(current_page.getURL(*page_args)) |
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508 else: |
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509 sub_path, current_page = self.getSubPageByName(current_page, page_name) |
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510 path.append(sub_path) |
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511 if page_args: |
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512 path.extend([quote(a) for a in page_args]) |
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513 return u'/'.join(path) |
|
980
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514 |
| 917 | 515 def getChildWithDefault(self, path, request): |
| 516 # we handle children ourselves | |
| 517 raise exceptions.InternalError(u"this method should not be used with LiberviaPage") | |
| 518 | |
| 519 def nextPath(self, request): | |
| 520 """get next URL path segment, and update request accordingly | |
| 521 | |
| 522 will move first segment of postpath in prepath | |
| 523 @param request(server.Request): current HTTP request | |
| 524 @return (unicode): unquoted segment | |
| 525 @raise IndexError: there is no segment left | |
| 526 """ | |
| 527 pathElement = request.postpath.pop(0) | |
| 528 request.prepath.append(pathElement) | |
| 529 return urllib.unquote(pathElement).decode('utf-8') | |
| 530 | |
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531 ## Cache handling ## |
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532 |
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533 def _setCacheHeaders(self, request, cache): |
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534 """Set ETag and Last-Modified HTTP headers, used for caching""" |
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535 request.setHeader('ETag', cache.hash) |
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536 last_modified = self.host.getHTTPDate(cache.created) |
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537 request.setHeader('Last-Modified', last_modified) |
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538 |
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539 def _checkCacheHeaders(self, request, cache): |
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540 """Check if a cache condition is set on the request |
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541 |
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542 if condition is valid, C.HTTP_NOT_MODIFIED is returned |
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543 """ |
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544 etag_match = request.getHeader('If-None-Match') |
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545 if etag_match is not None: |
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546 if cache.hash == etag_match: |
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547 self.pageError(request, C.HTTP_NOT_MODIFIED, no_body=True) |
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548 else: |
|
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549 modified_match = request.getHeader('If-Modified-Since') |
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550 if modified_match is not None: |
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551 modified = utils.date_parse(modified_match) |
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552 if modified >= int(cache.created): |
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553 self.pageError(request, C.HTTP_NOT_MODIFIED, no_body=True) |
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554 |
|
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555 def checkCacheSubscribeCb(self, sub_id, service, node): |
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556 self.cache_pubsub_sub.add((service, node, sub_id)) |
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557 |
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558 def checkCacheSubscribeEb(self, failure_, service, node): |
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559 log.warning(_(u"Can't subscribe to node: {msg}").format(msg=failure_)) |
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560 # FIXME: cache must be marked as unusable here |
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561 |
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562 def psNodeWatchAddEb(self, failure_, service, node): |
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563 log.warning(_(u"Can't add node watched: {msg}").format(msg=failure_)) |
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564 |
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565 def checkCache(self, request, cache_type, **kwargs): |
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566 """check if a page is in cache and return cached version if suitable |
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567 |
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568 this method may perform extra operation to handle cache (e.g. subscribing to a |
|
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569 pubsub node) |
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570 @param request(server.Request): current HTTP request |
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571 @param cache_type(int): on of C.CACHE_* const. |
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572 @param **kwargs: args according to cache_type: |
|
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573 C.CACHE_PUBSUB: |
|
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574 service: pubsub service |
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575 node: pubsub node |
|
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576 short: short name of feature (needed if node is empty to find namespace) |
|
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577 |
|
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|
578 """ |
|
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|
579 if request.postpath: |
|
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580 # we are not on the final page, no need to go further |
|
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581 return |
|
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582 profile = self.getProfile(request) or C.SERVICE_PROFILE |
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583 |
|
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|
584 if cache_type == C.CACHE_PUBSUB: |
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585 service, node = kwargs['service'], kwargs['node'] |
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|
586 if not node: |
|
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|
587 try: |
|
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588 short = kwargs['short'] |
|
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589 node = self.host.ns_map[short] |
|
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|
590 except KeyError: |
|
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591 log.warning(_(u"Can't use cache for empty node without namespace set, please ensure to set \"short\" and that it is registered")) |
|
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592 return |
|
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593 if profile != C.SERVICE_PROFILE: |
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|
594 # only service profile is cache for now |
|
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|
595 return |
|
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|
596 try: |
|
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597 cache = self.cache[profile][cache_type][service][node][self] |
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598 except KeyError: |
|
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|
599 # no cache yet, let's subscribe to the pubsub node |
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600 d1 = self.host.bridgeCall('psSubscribe', service.full(), node, {}, profile) |
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601 d1.addCallback(self.checkCacheSubscribeCb, service, node) |
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602 d1.addErrback(self.checkCacheSubscribeEb, service, node) |
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603 d2 = self.host.bridgeCall('psNodeWatchAdd', service.full(), node, profile) |
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604 d2.addErrback(self.psNodeWatchAddEb, service, node) |
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605 self._do_cache = [profile, cache_type, service, node] |
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606 # we don't return the Deferreds as it is not needed to wait for |
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607 # the subscription to continue with page rendering |
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|
608 return |
|
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|
609 |
|
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|
610 else: |
|
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|
611 raise exceptions.InternalError(u'Unknown cache_type') |
|
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612 log.debug(u'using cache for {page}'.format(page=self)) |
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|
613 cache.last_access = time.time() |
|
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614 self._setCacheHeaders(request, cache) |
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615 self._checkCacheHeaders(request, cache) |
|
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616 request.write(cache.rendered) |
|
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617 request.finish() |
|
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618 raise failure.Failure(exceptions.CancelError(u'cache is used')) |
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|
619 |
| 1018 | 620 def _cacheURL(self, dummy, request, profile): |
| 621 self.cached_urls.setdefault(profile, {})[request.uri] = CacheURL(request) | |
| 622 | |
|
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|
623 @classmethod |
|
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|
624 def onNodeEvent(cls, host, service, node, event_type, items, profile): |
|
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625 """Invalidate cache for all pages linked to this node""" |
|
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|
626 try: |
|
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|
627 cache = cls.cache[profile][C.CACHE_PUBSUB][jid.JID(service)][node] |
|
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|
628 except KeyError: |
|
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|
629 log.info(_(u'Removing subscription for {service}/{node}: ' |
|
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630 u'the page is not cached').format(service=service, node=node)) |
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631 d1 = host.bridgeCall('psUnsubscribe', service, node, profile) |
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632 d1.addErrback(lambda failure_: |
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633 log.warning(_(u"Can't unsubscribe from {service}/{node}: {msg}").format( |
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634 service=service, node=node, msg=failure_))) |
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635 d2 = host.bridgeCall('psNodeWatchAdd', service, node, profile) |
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636 # TODO: check why the page is not in cache, remove subscription? |
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637 d2.addErrback(lambda failure_: |
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638 log.warning(_(u"Can't remove watch for {service}/{node}: {msg}").format( |
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639 service=service, node=node, msg=failure_))) |
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640 else: |
|
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641 cache.clear() |
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642 |
| 995 | 643 @classmethod |
| 644 def onSignal(cls, host, signal, *args): | |
| 645 """Generic method which receive registered signals | |
| 646 | |
| 647 if a callback is registered for this signal, call it | |
| 648 @param host: Libervia instance | |
| 649 @param signal(unicode): name of the signal | |
| 650 @param *args: args of the signals | |
| 651 """ | |
| 652 for page, request, check_profile in cls.signals_handlers.get(signal, {}).itervalues(): | |
| 653 if check_profile: | |
| 654 signal_profile = args[-1] | |
| 655 request_profile = page.getProfile(request) | |
| 656 if not request_profile: | |
| 657 # if you want to use signal without session, unset check_profile | |
| 658 # (be sure to know what you are doing) | |
| 659 log.error(_(u"no session started, signal can't be checked")) | |
| 660 continue | |
| 661 if signal_profile != request_profile: | |
| 662 # we ignore the signal, it's not for our profile | |
| 663 continue | |
| 664 if request._signals_cache is not None: | |
| 665 # socket is not yet opened, we cache the signal | |
| 666 request._signals_cache.append((request, signal, args)) | |
| 667 log.debug(u"signal [{signal}] cached: {args}".format( | |
| 668 signal = signal, | |
| 669 args = args)) | |
| 670 else: | |
| 671 page.on_signal(page, request, signal, *args) | |
| 672 | |
| 673 def onSocketOpen(self, request): | |
| 674 """Called for dynamic pages when socket has just been opened | |
| 675 | |
| 676 we send all cached signals | |
| 677 """ | |
| 678 assert request._signals_cache is not None | |
| 679 cache = request._signals_cache | |
| 680 request._signals_cache = None | |
| 681 for request, signal, args in cache: | |
| 682 self.on_signal(self, request, signal, *args) | |
| 683 | |
| 684 def onSocketClose(self, request): | |
| 685 """Called for dynamic pages when socket has just been closed | |
| 686 | |
| 687 we remove signal handler | |
| 688 """ | |
| 689 for signal in request._signals_registered: | |
| 690 try: | |
| 691 del LiberviaPage.signals_handlers[signal][id(request)] | |
| 692 except KeyError: | |
| 693 log.error(_(u"Can't find signal handler for [{signal}], this should not happen").format( | |
| 694 signal = signal)) | |
| 695 else: | |
| 696 log.debug(_(u"Removed signal handler")) | |
| 697 | |
| 962 | 698 def HTTPRedirect(self, request, url): |
| 699 """redirect to an URL using HTTP redirection | |
| 700 | |
| 701 @param request(server.Request): current HTTP request | |
| 702 @param url(unicode): url to redirect to | |
| 703 """ | |
| 704 | |
| 705 web_util.redirectTo(url.encode('utf-8'), request) | |
| 706 request.finish() | |
| 707 raise failure.Failure(exceptions.CancelError(u'HTTP redirection is used')) | |
| 708 | |
| 709 def redirectOrContinue(self, request, redirect_arg=u'redirect_url'): | |
| 710 """helper method to redirect a page to an url given as arg | |
| 711 | |
| 712 if the arg is not present, the page will continue normal workflow | |
| 713 @param request(server.Request): current HTTP request | |
| 714 @param redirect_arg(unicode): argument to use to get redirection URL | |
| 715 @interrupt: redirect the page to requested URL | |
| 716 @interrupt pageError(C.HTTP_BAD_REQUEST): empty or non local URL is used | |
| 717 """ | |
| 718 try: | |
| 719 url = self.getPostedData(request, 'redirect_url') | |
| 720 except KeyError: | |
| 721 pass | |
| 722 else: | |
| 723 # a redirection is requested | |
| 724 if not url or url[0] != u'/': | |
| 725 # we only want local urls | |
| 726 self.pageError(request, C.HTTP_BAD_REQUEST) | |
| 727 else: | |
| 728 self.HTTPRedirect(request, url) | |
| 729 | |
|
923
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730 def pageRedirect(self, page_path, request, skip_parse_url=True): |
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731 """redirect a page to a named page |
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|
732 |
|
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733 the workflow will continue with the workflow of the named page, |
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734 skipping named page's parse_url method if it exist. |
| 962 | 735 If you want to do a HTTP redirection, use HTTPRedirect |
|
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736 @param page_path(unicode): path to page (elements are separated by "/"): |
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737 if path starts with a "/": |
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738 path is a full path starting from root |
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739 else: |
|
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740 - first element is name as registered in name variable |
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741 - following element are subpages path |
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742 e.g.: "blog" redirect to page named "blog" |
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743 "blog/atom.xml" redirect to atom.xml subpage of "blog" |
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744 "/common/blog/atom.xml" redirect to the page at the fiven full path |
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745 @param request(server.Request): current HTTP request |
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746 @param skip_parse_url(bool): if True, parse_url method on redirect page will be skipped |
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747 @raise KeyError: there is no known page with this name |
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748 """ |
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749 # FIXME: render non LiberviaPage resources |
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750 path = page_path.rstrip(u'/').split(u'/') |
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751 if not path[0]: |
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752 redirect_page = self.host.root |
|
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753 else: |
|
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754 redirect_page = self.named_pages[path[0]] |
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755 |
|
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756 for subpage in path[1:]: |
| 962 | 757 if redirect_page is self.host.root: |
| 758 redirect_page = redirect_page.children[subpage] | |
| 759 else: | |
| 760 redirect_page = redirect_page.original.children[subpage] | |
|
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761 |
| 1015 | 762 redirect_page.renderPage(request, skip_parse_url=skip_parse_url) |
|
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763 raise failure.Failure(exceptions.CancelError(u'page redirection is used')) |
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764 |
|
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765 def pageError(self, request, code=C.HTTP_NOT_FOUND, no_body=False): |
| 917 | 766 """generate an error page and terminate the request |
| 767 | |
| 768 @param request(server.Request): HTTP request | |
| 769 @param core(int): error code to use | |
|
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770 @param no_body: don't write body if True |
| 917 | 771 """ |
| 772 request.setResponseCode(code) | |
|
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773 if no_body: |
|
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774 request.finish() |
|
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775 else: |
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776 template = u'error/' + unicode(code) + '.html' |
| 917 | 777 |
|
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778 rendered = self.host.renderer.render( |
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779 template, |
|
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780 root_path = '/templates/', |
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781 error_code = code, |
|
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782 **request.template_data) |
| 917 | 783 |
|
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784 self.writeData(rendered, request) |
| 917 | 785 raise failure.Failure(exceptions.CancelError(u'error page is used')) |
| 786 | |
| 787 def writeData(self, data, request): | |
|
937
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788 """write data to transport and finish the request""" |
| 917 | 789 if data is None: |
| 790 self.pageError(request) | |
|
985
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791 data_encoded = data.encode('utf-8') |
|
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792 |
|
985
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793 if self._do_cache is not None: |
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794 cache = reduce(lambda d, k: d.setdefault(k, {}), self._do_cache, self.cache) |
|
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795 page_cache = cache[self] = CachePage(data_encoded) |
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796 self._setCacheHeaders(request, page_cache) |
|
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797 log.debug(_(u'{page} put in cache for [{profile}]').format( |
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798 page=self, |
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799 profile=self._do_cache[0])) |
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800 self._do_cache = None |
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801 self._checkCacheHeaders(request, page_cache) |
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802 |
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803 request.write(data_encoded) |
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804 request.finish() |
| 917 | 805 |
| 806 def _subpagesHandler(self, dummy, request): | |
| 807 """render subpage if suitable | |
| 808 | |
| 809 this method checks if there is still an unmanaged part of the path | |
| 810 and check if it corresponds to a subpage. If so, it render the subpage | |
| 811 else it render a NoResource. | |
| 812 If there is no unmanaged part of the segment, current page workflow is pursued | |
| 813 """ | |
| 814 if request.postpath: | |
| 815 subpage = self.nextPath(request) | |
| 816 try: | |
| 817 child = self.children[subpage] | |
| 818 except KeyError: | |
| 819 self.pageError(request) | |
| 820 else: | |
| 821 child.render(request) | |
| 822 raise failure.Failure(exceptions.CancelError(u'subpage page is used')) | |
| 823 | |
|
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824 def _prepare_dynamic(self, dummy, request): |
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825 # we need to activate dynamic page |
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826 # we set data for template, and create/register token |
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827 socket_token = unicode(uuid.uuid4()) |
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828 socket_url = self.host.getWebsocketURL(request) |
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829 socket_debug = C.boolConst(self.host.debug) |
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830 request.template_data['websocket'] = WebsocketMeta(socket_url, socket_token, socket_debug) |
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831 self.host.registerWSToken(socket_token, self, request) |
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832 # we will keep track of handlers to remove |
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833 request._signals_registered = [] |
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834 # we will cache registered signals until socket is opened |
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835 request._signals_cache = [] |
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836 |
| 917 | 837 def _prepare_render(self, dummy, request): |
|
926
612e33fd32a8
server (pages): fixed _prepare_render handling
Goffi <goffi@goffi.org>
parents:
925
diff
changeset
|
838 return defer.maybeDeferred(self.prepare_render, self, request) |
| 917 | 839 |
| 840 def _render_method(self, dummy, request): | |
| 841 return defer.maybeDeferred(self.render_method, self, request) | |
| 842 | |
| 962 | 843 def _render_template(self, dummy, request): |
| 844 template_data = request.template_data | |
| 845 | |
| 846 # if confirm variable is set in case of successfuly data post | |
| 847 session_data = self.host.getSessionData(request, session_iface.ISATSession) | |
| 848 if session_data.popPageFlag(self, C.FLAG_CONFIRM): | |
| 849 template_data[u'confirm'] = True | |
| 850 | |
| 917 | 851 return self.host.renderer.render( |
| 852 self.template, | |
| 853 root_path = '/templates/', | |
| 962 | 854 media_path = '/' + C.MEDIA_DIR, |
| 995 | 855 cache_path = session_data.cache_dir, |
|
990
6daa59d44ee2
pages: menu implementation, first draft:
Goffi <goffi@goffi.org>
parents:
985
diff
changeset
|
856 main_menu = LiberviaPage.main_menu, |
| 917 | 857 **template_data) |
| 858 | |
| 859 def _renderEb(self, failure_, request): | |
| 860 """don't raise error on CancelError""" | |
| 861 failure_.trap(exceptions.CancelError) | |
| 862 | |
|
937
00236973e138
server (pages): an HTTP internal error is raised if an error is uncatched during page workflow
Goffi <goffi@goffi.org>
parents:
936
diff
changeset
|
863 def _internalError(self, failure_, request): |
|
00236973e138
server (pages): an HTTP internal error is raised if an error is uncatched during page workflow
Goffi <goffi@goffi.org>
parents:
936
diff
changeset
|
864 """called if an error is not catched""" |
|
00236973e138
server (pages): an HTTP internal error is raised if an error is uncatched during page workflow
Goffi <goffi@goffi.org>
parents:
936
diff
changeset
|
865 log.error(_(u"Uncatched error for HTTP request on {url}: {msg}").format( |
|
00236973e138
server (pages): an HTTP internal error is raised if an error is uncatched during page workflow
Goffi <goffi@goffi.org>
parents:
936
diff
changeset
|
866 url = request.URLPath(), |
|
00236973e138
server (pages): an HTTP internal error is raised if an error is uncatched during page workflow
Goffi <goffi@goffi.org>
parents:
936
diff
changeset
|
867 msg = failure_)) |
|
00236973e138
server (pages): an HTTP internal error is raised if an error is uncatched during page workflow
Goffi <goffi@goffi.org>
parents:
936
diff
changeset
|
868 self.pageError(request, C.HTTP_INTERNAL_ERROR) |
|
00236973e138
server (pages): an HTTP internal error is raised if an error is uncatched during page workflow
Goffi <goffi@goffi.org>
parents:
936
diff
changeset
|
869 |
|
956
dabecab10faa
server (pages): impleted CSRF protection:
Goffi <goffi@goffi.org>
parents:
955
diff
changeset
|
870 def _on_data_post_redirect(self, ret, request): |
|
968
4d37b23777c3
pages (core, tickets/new): replaced post_redirect_uri mechanism by post_redirect_page:
Goffi <goffi@goffi.org>
parents:
966
diff
changeset
|
871 """called when page's on_data_post has been done successfuly |
|
956
dabecab10faa
server (pages): impleted CSRF protection:
Goffi <goffi@goffi.org>
parents:
955
diff
changeset
|
872 |
|
968
4d37b23777c3
pages (core, tickets/new): replaced post_redirect_uri mechanism by post_redirect_page:
Goffi <goffi@goffi.org>
parents:
966
diff
changeset
|
873 This will do a Post/Redirect/Get pattern. |
|
4d37b23777c3
pages (core, tickets/new): replaced post_redirect_uri mechanism by post_redirect_page:
Goffi <goffi@goffi.org>
parents:
966
diff
changeset
|
874 this method redirect to the same page or to request.data['post_redirect_page'] |
|
4d37b23777c3
pages (core, tickets/new): replaced post_redirect_uri mechanism by post_redirect_page:
Goffi <goffi@goffi.org>
parents:
966
diff
changeset
|
875 post_redirect_page can be either a page or a tuple with page as first item, then a list of unicode arguments to append to the url. |
|
4d37b23777c3
pages (core, tickets/new): replaced post_redirect_uri mechanism by post_redirect_page:
Goffi <goffi@goffi.org>
parents:
966
diff
changeset
|
876 if post_redirect_page is not used, initial request.uri (i.e. the same page as where the data have been posted) will be used for redirection. |
|
4d37b23777c3
pages (core, tickets/new): replaced post_redirect_uri mechanism by post_redirect_page:
Goffi <goffi@goffi.org>
parents:
966
diff
changeset
|
877 HTTP status code "See Other" (303) is used as it is the recommanded code in this case. |
| 962 | 878 @param ret(None, unicode, iterable): on_data_post return value |
| 879 see LiberviaPage.__init__ on_data_post docstring | |
|
956
dabecab10faa
server (pages): impleted CSRF protection:
Goffi <goffi@goffi.org>
parents:
955
diff
changeset
|
880 """ |
| 962 | 881 if ret is None: |
| 882 ret = () | |
| 883 elif isinstance(ret, basestring): | |
| 884 ret = (ret,) | |
| 885 else: | |
| 886 ret = tuple(ret) | |
| 887 raise NotImplementedError(_(u'iterable in on_data_post return value is not used yet')) | |
|
957
67bf14c91d5c
server (pages): added a confirm flag on successful post:
Goffi <goffi@goffi.org>
parents:
956
diff
changeset
|
888 session_data = self.host.getSessionData(request, session_iface.ISATSession) |
|
974
4aa38c49bff7
pages: fixed use of request data in _on_data_post_redirect
Goffi <goffi@goffi.org>
parents:
972
diff
changeset
|
889 request_data = self.getRData(request) |
|
4aa38c49bff7
pages: fixed use of request data in _on_data_post_redirect
Goffi <goffi@goffi.org>
parents:
972
diff
changeset
|
890 if 'post_redirect_page' in request_data: |
|
4aa38c49bff7
pages: fixed use of request data in _on_data_post_redirect
Goffi <goffi@goffi.org>
parents:
972
diff
changeset
|
891 redirect_page_data = request_data['post_redirect_page'] |
|
968
4d37b23777c3
pages (core, tickets/new): replaced post_redirect_uri mechanism by post_redirect_page:
Goffi <goffi@goffi.org>
parents:
966
diff
changeset
|
892 if isinstance(redirect_page_data, tuple): |
|
4d37b23777c3
pages (core, tickets/new): replaced post_redirect_uri mechanism by post_redirect_page:
Goffi <goffi@goffi.org>
parents:
966
diff
changeset
|
893 redirect_page = redirect_page_data[0] |
|
972
c4e58c4dba75
server: getURL + minor improvments:
Goffi <goffi@goffi.org>
parents:
968
diff
changeset
|
894 redirect_page_args = redirect_page_data[1:] |
|
c4e58c4dba75
server: getURL + minor improvments:
Goffi <goffi@goffi.org>
parents:
968
diff
changeset
|
895 redirect_uri = redirect_page.getURL(*redirect_page_args) |
|
968
4d37b23777c3
pages (core, tickets/new): replaced post_redirect_uri mechanism by post_redirect_page:
Goffi <goffi@goffi.org>
parents:
966
diff
changeset
|
896 else: |
|
4d37b23777c3
pages (core, tickets/new): replaced post_redirect_uri mechanism by post_redirect_page:
Goffi <goffi@goffi.org>
parents:
966
diff
changeset
|
897 redirect_page = redirect_page_data |
|
972
c4e58c4dba75
server: getURL + minor improvments:
Goffi <goffi@goffi.org>
parents:
968
diff
changeset
|
898 redirect_uri = redirect_page.url |
|
968
4d37b23777c3
pages (core, tickets/new): replaced post_redirect_uri mechanism by post_redirect_page:
Goffi <goffi@goffi.org>
parents:
966
diff
changeset
|
899 else: |
|
4d37b23777c3
pages (core, tickets/new): replaced post_redirect_uri mechanism by post_redirect_page:
Goffi <goffi@goffi.org>
parents:
966
diff
changeset
|
900 redirect_page = self |
|
4d37b23777c3
pages (core, tickets/new): replaced post_redirect_uri mechanism by post_redirect_page:
Goffi <goffi@goffi.org>
parents:
966
diff
changeset
|
901 redirect_uri = request.uri |
|
4d37b23777c3
pages (core, tickets/new): replaced post_redirect_uri mechanism by post_redirect_page:
Goffi <goffi@goffi.org>
parents:
966
diff
changeset
|
902 |
| 962 | 903 if not C.POST_NO_CONFIRM in ret: |
|
968
4d37b23777c3
pages (core, tickets/new): replaced post_redirect_uri mechanism by post_redirect_page:
Goffi <goffi@goffi.org>
parents:
966
diff
changeset
|
904 session_data.setPageFlag(redirect_page, C.FLAG_CONFIRM) |
|
956
dabecab10faa
server (pages): impleted CSRF protection:
Goffi <goffi@goffi.org>
parents:
955
diff
changeset
|
905 request.setResponseCode(C.HTTP_SEE_OTHER) |
|
968
4d37b23777c3
pages (core, tickets/new): replaced post_redirect_uri mechanism by post_redirect_page:
Goffi <goffi@goffi.org>
parents:
966
diff
changeset
|
906 request.setHeader("location", redirect_uri) |
|
955
4f7cb6335a33
server(pages): do Post/Redirect/Get pattern when on_data_post is used (avoid double posting on refresh)
Goffi <goffi@goffi.org>
parents:
950
diff
changeset
|
907 request.finish() |
|
4f7cb6335a33
server(pages): do Post/Redirect/Get pattern when on_data_post is used (avoid double posting on refresh)
Goffi <goffi@goffi.org>
parents:
950
diff
changeset
|
908 raise failure.Failure(exceptions.CancelError(u'Post/Redirect/Get is used')) |
|
4f7cb6335a33
server(pages): do Post/Redirect/Get pattern when on_data_post is used (avoid double posting on refresh)
Goffi <goffi@goffi.org>
parents:
950
diff
changeset
|
909 |
|
956
dabecab10faa
server (pages): impleted CSRF protection:
Goffi <goffi@goffi.org>
parents:
955
diff
changeset
|
910 def _on_data_post(self, dummy, request): |
|
dabecab10faa
server (pages): impleted CSRF protection:
Goffi <goffi@goffi.org>
parents:
955
diff
changeset
|
911 csrf_token = self.host.getSessionData(request, session_iface.ISATSession).csrf_token |
|
dabecab10faa
server (pages): impleted CSRF protection:
Goffi <goffi@goffi.org>
parents:
955
diff
changeset
|
912 try: |
|
dabecab10faa
server (pages): impleted CSRF protection:
Goffi <goffi@goffi.org>
parents:
955
diff
changeset
|
913 given_csrf = self.getPostedData(request, u'csrf_token') |
|
dabecab10faa
server (pages): impleted CSRF protection:
Goffi <goffi@goffi.org>
parents:
955
diff
changeset
|
914 except KeyError: |
|
dabecab10faa
server (pages): impleted CSRF protection:
Goffi <goffi@goffi.org>
parents:
955
diff
changeset
|
915 given_csrf = None |
|
dabecab10faa
server (pages): impleted CSRF protection:
Goffi <goffi@goffi.org>
parents:
955
diff
changeset
|
916 if given_csrf is None or given_csrf != csrf_token: |
|
dabecab10faa
server (pages): impleted CSRF protection:
Goffi <goffi@goffi.org>
parents:
955
diff
changeset
|
917 log.warning(_(u"invalid CSRF token, hack attempt? URL: {url}, IP: {ip}").format( |
|
dabecab10faa
server (pages): impleted CSRF protection:
Goffi <goffi@goffi.org>
parents:
955
diff
changeset
|
918 url=request.uri, |
|
dabecab10faa
server (pages): impleted CSRF protection:
Goffi <goffi@goffi.org>
parents:
955
diff
changeset
|
919 ip=request.getClientIP())) |
|
dabecab10faa
server (pages): impleted CSRF protection:
Goffi <goffi@goffi.org>
parents:
955
diff
changeset
|
920 self.pageError(request, C.HTTP_UNAUTHORIZED) |
|
dabecab10faa
server (pages): impleted CSRF protection:
Goffi <goffi@goffi.org>
parents:
955
diff
changeset
|
921 d = defer.maybeDeferred(self.on_data_post, self, request) |
|
dabecab10faa
server (pages): impleted CSRF protection:
Goffi <goffi@goffi.org>
parents:
955
diff
changeset
|
922 d.addCallback(self._on_data_post_redirect, request) |
|
dabecab10faa
server (pages): impleted CSRF protection:
Goffi <goffi@goffi.org>
parents:
955
diff
changeset
|
923 return d |
|
dabecab10faa
server (pages): impleted CSRF protection:
Goffi <goffi@goffi.org>
parents:
955
diff
changeset
|
924 |
|
931
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
925 def getPostedData(self, request, keys, multiple=False): |
|
1010
4de970de87d7
pages: added getCurrentURL and getParamURL:
Goffi <goffi@goffi.org>
parents:
1009
diff
changeset
|
926 """get data from a POST request or from URL's query part and decode it |
|
931
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
927 |
|
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
928 @param request(server.Request): request linked to the session |
|
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
929 @param keys(unicode, iterable[unicode]): name of the value(s) to get |
|
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
930 unicode to get one value |
|
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
931 iterable to get more than one |
|
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
932 @param multiple(bool): True if multiple values are possible/expected |
|
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
933 if False, the first value is returned |
|
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
934 @return (iterator[unicode], list[iterator[unicode], unicode, list[unicode]): values received for this(these) key(s) |
|
956
dabecab10faa
server (pages): impleted CSRF protection:
Goffi <goffi@goffi.org>
parents:
955
diff
changeset
|
935 @raise KeyError: one specific key has been requested, and it is missing |
|
931
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
936 """ |
|
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
937 if isinstance(keys, basestring): |
|
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
938 keys = [keys] |
|
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
939 get_first = True |
|
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
940 else: |
|
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
941 get_first = False |
|
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
942 |
|
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
943 ret = [] |
|
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
944 for key in keys: |
|
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
945 gen = (urllib.unquote(v).decode('utf-8') for v in request.args.get(key,[])) |
|
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
946 if multiple: |
|
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
947 ret.append(gen) |
|
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
948 else: |
|
956
dabecab10faa
server (pages): impleted CSRF protection:
Goffi <goffi@goffi.org>
parents:
955
diff
changeset
|
949 try: |
|
dabecab10faa
server (pages): impleted CSRF protection:
Goffi <goffi@goffi.org>
parents:
955
diff
changeset
|
950 ret.append(next(gen)) |
|
dabecab10faa
server (pages): impleted CSRF protection:
Goffi <goffi@goffi.org>
parents:
955
diff
changeset
|
951 except StopIteration: |
| 962 | 952 raise KeyError(key) |
|
931
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
953 |
|
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
954 return ret[0] if get_first else ret |
|
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
955 |
|
1009
b57f86bc1177
pages: added "multiple" argument to getAllPostedData
Goffi <goffi@goffi.org>
parents:
1003
diff
changeset
|
956 def getAllPostedData(self, request, except_=(), multiple=True): |
| 959 | 957 """get all posted data |
| 958 | |
| 959 @param request(server.Request): request linked to the session | |
| 960 @param except_(iterable[unicode]): key of values to ignore | |
| 961 csrf_token will always be ignored | |
|
1009
b57f86bc1177
pages: added "multiple" argument to getAllPostedData
Goffi <goffi@goffi.org>
parents:
1003
diff
changeset
|
962 @param multiple(bool): if False, only the first values are returned |
| 959 | 963 @return (dict[unicode, list[unicode]]): post values |
| 964 """ | |
| 965 except_ = tuple(except_) + (u'csrf_token',) | |
| 966 ret = {} | |
| 967 for key, values in request.args.iteritems(): | |
| 968 key = urllib.unquote(key).decode('utf-8') | |
| 969 if key in except_: | |
| 970 continue | |
|
1009
b57f86bc1177
pages: added "multiple" argument to getAllPostedData
Goffi <goffi@goffi.org>
parents:
1003
diff
changeset
|
971 if not multiple: |
|
b57f86bc1177
pages: added "multiple" argument to getAllPostedData
Goffi <goffi@goffi.org>
parents:
1003
diff
changeset
|
972 ret[key] = urllib.unquote(values[0]).decode('utf-8') |
|
b57f86bc1177
pages: added "multiple" argument to getAllPostedData
Goffi <goffi@goffi.org>
parents:
1003
diff
changeset
|
973 else: |
|
b57f86bc1177
pages: added "multiple" argument to getAllPostedData
Goffi <goffi@goffi.org>
parents:
1003
diff
changeset
|
974 ret[key] = [urllib.unquote(v).decode('utf-8') for v in values] |
| 959 | 975 return ret |
| 976 | |
|
922
16d1084d1371
server (pages): added "None" access (page is not rendered at all) and some HTTP code constants + helper methods to get session data
Goffi <goffi@goffi.org>
parents:
921
diff
changeset
|
977 def getProfile(self, request): |
|
16d1084d1371
server (pages): added "None" access (page is not rendered at all) and some HTTP code constants + helper methods to get session data
Goffi <goffi@goffi.org>
parents:
921
diff
changeset
|
978 """helper method to easily get current profile |
|
16d1084d1371
server (pages): added "None" access (page is not rendered at all) and some HTTP code constants + helper methods to get session data
Goffi <goffi@goffi.org>
parents:
921
diff
changeset
|
979 |
|
16d1084d1371
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980 @return (unicode, None): current profile |
|
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981 None if no profile session is started |
|
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982 """ |
|
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983 sat_session = self.host.getSessionData(request, session_iface.ISATSession) |
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984 return sat_session.profile |
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985 |
|
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986 def getRData(self, request): |
|
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987 """helper method to get request data dict |
|
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988 |
|
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989 this dictionnary if for the request only, it is not saved in session |
|
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990 It is mainly used to pass data between pages/methods called during request workflow |
|
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991 @return (dict): request data |
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992 """ |
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993 try: |
|
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994 return request.data |
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995 except AttributeError: |
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996 request.data = {} |
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997 return request.data |
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998 |
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999 def _checkAccess(self, data, request): |
|
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1000 """Check access according to self.access |
|
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1001 |
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1002 if access is not granted, show a HTTP_UNAUTHORIZED pageError and stop request, |
|
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1003 else return data (so it can be inserted in deferred chain |
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1004 """ |
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1005 if self.access == C.PAGES_ACCESS_PUBLIC: |
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1006 pass |
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1007 elif self.access == C.PAGES_ACCESS_PROFILE: |
|
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1008 profile = self.getProfile(request) |
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1009 if not profile: |
| 962 | 1010 # no session started |
| 1011 if not self.host.options["allow_registration"]: | |
| 1012 # registration not allowed, access is not granted | |
| 1013 self.pageError(request, C.HTTP_UNAUTHORIZED) | |
| 1014 else: | |
| 1015 # registration allowed, we redirect to login page | |
| 1016 login_url = self.getPageRedirectURL(request) | |
| 1017 self.HTTPRedirect(request, login_url) | |
|
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1018 |
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1019 return data |
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1020 |
| 995 | 1021 def renderPartial(self, request, template, template_data): |
| 1022 """Render a template to be inserted in dynamic page | |
| 1023 | |
| 1024 this is NOT the normal page rendering method, it is used only to update | |
| 1025 dynamic pages | |
| 1026 @param template(unicode): path of the template to render | |
| 1027 @param template_data(dict): template_data to use | |
| 1028 """ | |
| 1029 if not self.dynamic: | |
| 1030 raise exceptions.InternalError(_(u"renderPartial must only be used with dynamic pages")) | |
| 1031 session_data = self.host.getSessionData(request, session_iface.ISATSession) | |
| 1032 | |
| 1033 return self.host.renderer.render( | |
| 1034 template, | |
| 1035 root_path = '/templates/', | |
| 1036 media_path = '/' + C.MEDIA_DIR, | |
| 1037 cache_path = session_data.cache_dir, | |
| 1038 main_menu = LiberviaPage.main_menu, | |
| 1039 **template_data) | |
| 1040 | |
| 1041 def renderAndUpdate(self, request, template, selectors, template_data_update, update_type="append"): | |
| 1042 """Helper method to render a partial page element and update the page | |
| 1043 | |
| 1044 this is NOT the normal page rendering method, it is used only to update | |
| 1045 dynamic pages | |
| 1046 @param request(server.Request): current HTTP request | |
| 1047 @param template: same as for [renderPartial] | |
| 1048 @param selectors: CSS selectors to use | |
| 1049 @param template_data_update: template data to use | |
| 1050 template data cached in request will be copied then updated | |
| 1051 with this data | |
| 1052 @parap update_type(unicode): one of: | |
| 1053 append: append rendered element to selected element | |
| 1054 """ | |
| 1055 template_data = request.template_data.copy() | |
| 1056 template_data.update(template_data_update) | |
| 1057 html = self.renderPartial(request, template, template_data) | |
| 1058 request.sendData(u'dom', | |
| 1059 selectors=selectors, | |
| 1060 update_type=update_type, | |
| 1061 html=html) | |
| 1062 | |
|
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1063 def renderPage(self, request, skip_parse_url=False): |
|
937
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1064 """Main method to handle the workflow of a LiberviaPage""" |
|
994
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|
1065 |
|
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1066 # template_data are the variables passed to template |
| 917 | 1067 if not hasattr(request, 'template_data'): |
|
957
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|
1068 session_data = self.host.getSessionData(request, session_iface.ISATSession) |
|
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1069 csrf_token = session_data.csrf_token |
|
994
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|
1070 request.template_data = {u'profile': session_data.profile, |
|
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|
1071 u'csrf_token': csrf_token} |
|
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1072 |
|
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1073 # XXX: here is the code which need to be executed once |
|
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|
1074 # at the beginning of the request hanling |
| 917 | 1075 if request.postpath and not request.postpath[-1]: |
| 1076 # we don't differenciate URLs finishing with '/' or not | |
| 1077 del request.postpath[-1] | |
|
922
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1078 |
| 917 | 1079 d = defer.Deferred() |
|
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1080 d.addCallback(self._checkAccess, request) |
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|
1081 |
|
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|
1082 if self.redirect is not None: |
| 1015 | 1083 d.addCallback(lambda dummy: self.pageRedirect(self.redirect, request, skip_parse_url=False)) |
|
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1084 |
|
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|
1085 if self.parse_url is not None and not skip_parse_url: |
| 1018 | 1086 if self.url_cache: |
| 1087 profile = self.getProfile(request) | |
| 1088 try: | |
| 1089 cache_url = self.cached_urls[profile][request.uri] | |
| 1090 except KeyError: | |
| 1091 # no cache for this URI yet | |
| 1092 # we do normal URL parsing, and then the cache | |
| 1093 d.addCallback(self.parse_url, request) | |
| 1094 d.addCallback(self._cacheURL, request, profile) | |
| 1095 else: | |
| 1096 log.debug(_(u"using URI cache for {page}").format(page=self)) | |
| 1097 cache_url.use(request) | |
| 1098 else: | |
| 1099 d.addCallback(self.parse_url, request) | |
| 917 | 1100 |
| 1101 d.addCallback(self._subpagesHandler, request) | |
| 1102 | |
|
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1103 if request.method not in (C.HTTP_METHOD_GET, C.HTTP_METHOD_POST): |
|
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1104 # only HTTP GET and POST are handled so far |
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1105 d.addCallback(lambda dummy: self.pageError(request, C.HTTP_BAD_REQUEST)) |
|
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1106 |
|
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1107 if request.method == C.HTTP_METHOD_POST: |
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1108 if self.on_data_post is None: |
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1109 # if we don't have on_data_post, the page was not expecting POST |
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1110 # so we return an error |
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1111 d.addCallback(lambda dummy: self.pageError(request, C.HTTP_BAD_REQUEST)) |
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1112 else: |
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1113 d.addCallback(self._on_data_post, request) |
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1114 # by default, POST follow normal behaviour after on_data_post is called |
|
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1115 # this can be changed by a redirection or other method call in on_data_post |
|
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1116 |
|
998
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1117 if self.dynamic: |
|
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|
1118 d.addCallback(self._prepare_dynamic, request) |
|
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1119 |
| 917 | 1120 if self.prepare_render: |
| 1121 d.addCallback(self._prepare_render, request) | |
| 1122 | |
| 1123 if self.template: | |
| 962 | 1124 d.addCallback(self._render_template, request) |
| 917 | 1125 elif self.render_method: |
| 1126 d.addCallback(self._render_method, request) | |
| 1127 | |
| 1128 d.addCallback(self.writeData, request) | |
| 1129 d.addErrback(self._renderEb, request) | |
|
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1130 d.addErrback(self._internalError, request) |
| 917 | 1131 d.callback(self) |
| 1132 return server.NOT_DONE_YET | |
| 1133 | |
|
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1134 def render_GET(self, request): |
|
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1135 return self.renderPage(request) |
|
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1136 |
|
931
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1137 def render_POST(self, request): |
|
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1138 return self.renderPage(request) |