Mercurial > libervia-web
annotate src/server/pages.py @ 984:f0fc28b3bd1e
server: moved LiberviaPage code in its own module
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Fri, 17 Nov 2017 12:10:56 +0100 |
| parents | src/server/server.py@bcacf970f970 |
| children | 64826e69f365 |
| 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 |
| 917 | 23 from twisted.python import failure |
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24 |
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25 from sat.core.i18n import _ |
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26 from sat.core import exceptions |
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27 from sat.tools.common import uri as common_uri |
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28 from sat.core.log import getLogger |
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29 log = getLogger(__name__) |
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30 from libervia.server.constants import Const as C |
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31 from libervia.server import session_iface |
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32 from libervia.server.utils import quote |
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33 import libervia |
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34 |
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35 import os.path |
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36 import urllib |
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37 |
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38 |
| 917 | 39 class LiberviaPage(web_resource.Resource): |
| 40 isLeaf = True # we handle subpages ourself | |
| 41 named_pages = {} | |
| 925 | 42 uri_callbacks = {} |
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43 pages_redirects = {} |
| 917 | 44 |
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45 def __init__(self, host, root_dir, url, name=None, redirect=None, access=None, parse_url=None, |
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46 prepare_render=None, render=None, template=None, on_data_post=None): |
| 917 | 47 """initiate LiberviaPages |
| 48 | |
| 49 LiberviaPages are the main resources of Libervia, using easy to set python files | |
| 50 The arguments are the variables found in page_meta.py | |
| 51 @param host(Libervia): the running instance of Libervia | |
| 962 | 52 @param root_dir(unicode): aboslute file path of the page |
| 53 @param url(unicode): relative URL to the page | |
| 54 this URL may not be valid, as pages may require path arguments | |
| 917 | 55 @param name(unicode, None): if not None, a unique name to identify the page |
| 56 can then be used for e.g. redirection | |
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57 "/" is not allowed in names (as it can be used to construct URL paths) |
| 962 | 58 @param redirect(unicode, None): if not None, this page will be redirected. A redirected |
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59 parameter is used as in self.pageRedirect. parse_url will not be skipped |
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60 using this redirect parameter is called "full redirection" |
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61 using self.pageRedirect is called "partial redirection" (because some rendering method |
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62 can still be used, e.g. parse_url) |
| 917 | 63 @param access(unicode, None): permission needed to access the page |
| 64 None means public access. | |
| 65 Pages inherit from parent pages: e.g. if a "settings" page is restricted to admins, | |
| 66 and if "settings/blog" is public, it still can only be accessed by admins. | |
| 67 see C.PAGES_ACCESS_* for details | |
| 68 @param parse_url(callable, None): if set it will be called to handle the URL path | |
| 69 after this method, the page will be rendered if noting is left in path (request.postpath) | |
| 70 else a the request will be transmitted to a subpage | |
| 71 @param prepare_render(callable, None): if set, will be used to prepare the rendering | |
| 72 that often means gathering data using the bridge | |
| 73 @param render(callable, None): if not template is set, this method will be called and | |
| 74 what it returns will be rendered. | |
| 75 This method is mutually exclusive with template and must return a unicode string. | |
| 76 @param template(unicode, None): path to the template to render. | |
| 77 This method is mutually exclusive with render | |
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78 @param on_data_post(callable, None): method to call when data is posted |
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79 None if not post is handled |
| 962 | 80 on_data_post can return a string with following value: |
| 81 - C.POST_NO_CONFIRM: confirm flag will not be set | |
| 917 | 82 """ |
| 83 | |
| 84 web_resource.Resource.__init__(self) | |
| 85 self.host = host | |
| 86 self.root_dir = root_dir | |
| 962 | 87 self.url = url |
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88 self.name = name |
| 917 | 89 if name is not None: |
| 90 if name in self.named_pages: | |
| 91 raise exceptions.ConflictError(_(u'a Libervia page named "{}" already exists'.format(name))) | |
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92 if u'/' in name: |
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93 raise ValueError(_(u'"/" is not allowed in page names')) |
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94 if not name: |
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95 raise ValueError(_(u"a page name can't be empty")) |
| 917 | 96 self.named_pages[name] = self |
| 97 if access is None: | |
| 98 access = C.PAGES_ACCESS_PUBLIC | |
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99 if access not in (C.PAGES_ACCESS_PUBLIC, C.PAGES_ACCESS_PROFILE, C.PAGES_ACCESS_NONE): |
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100 raise NotImplementedError(_(u"{} access is not implemented yet").format(access)) |
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101 self.access = access |
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102 if redirect is not None: |
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103 # only page access and name make sense in case of full redirection |
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104 # so we check that rendering methods/values are not set |
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105 if not all(lambda x: x is not None |
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106 for x in (parse_url, prepare_render, render, template)): |
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107 raise ValueError(_(u"you can't use full page redirection with other rendering method," |
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108 u"check self.pageRedirect if you need to use them")) |
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109 self.redirect = redirect |
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110 else: |
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111 self.redirect = None |
| 917 | 112 self.parse_url = parse_url |
| 113 self.prepare_render = prepare_render | |
| 114 self.template = template | |
| 115 self.render_method = render | |
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116 self.on_data_post = on_data_post |
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117 if access == C.PAGES_ACCESS_NONE: |
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118 # none pages just return a 404, no further check is needed |
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119 return |
| 917 | 120 if template is None: |
| 121 if not callable(render): | |
| 122 log.error(_(u"render must be implemented and callable if template is not set")) | |
| 123 else: | |
| 124 if render is not None: | |
| 125 log.error(_(u"render can't be used at the same time as template")) | |
| 126 if parse_url is not None and not callable(parse_url): | |
| 127 log.error(_(u"parse_url must be a callable")) | |
| 128 | |
| 925 | 129 @classmethod |
| 130 def importPages(cls, host, parent=None, path=None): | |
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131 """Recursively import Libervia pages""" |
| 917 | 132 if path is None: |
| 133 path = [] | |
| 134 if parent is None: | |
| 135 root_dir = os.path.join(os.path.dirname(libervia.__file__), C.PAGES_DIR) | |
| 136 parent = host | |
| 137 else: | |
| 138 root_dir = parent.root_dir | |
| 139 for d in os.listdir(root_dir): | |
| 140 dir_path = os.path.join(root_dir, d) | |
| 141 if not os.path.isdir(dir_path): | |
| 142 continue | |
| 143 meta_path = os.path.join(dir_path, C.PAGES_META_FILE) | |
| 144 if os.path.isfile(meta_path): | |
| 145 page_data = {} | |
| 962 | 146 new_path = path + [d] |
| 917 | 147 # we don't want to force the presence of __init__.py |
| 148 # so we use execfile instead of import. | |
| 149 # TODO: when moved to Python 3, __init__.py is not mandatory anymore | |
| 150 # so we can switch to import | |
| 151 execfile(meta_path, page_data) | |
| 152 resource = LiberviaPage( | |
| 153 host, | |
| 154 dir_path, | |
| 962 | 155 u'/' + u'/'.join(new_path), |
| 917 | 156 name=page_data.get('name'), |
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157 redirect=page_data.get('redirect'), |
| 917 | 158 access=page_data.get('access'), |
| 159 parse_url=page_data.get('parse_url'), | |
| 160 prepare_render=page_data.get('prepare_render'), | |
| 161 render=page_data.get('render'), | |
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162 template=page_data.get('template'), |
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163 on_data_post=page_data.get('on_data_post')) |
| 917 | 164 parent.putChild(d, resource) |
| 165 log.info(u"Added /{path} page".format(path=u'[...]/'.join(new_path))) | |
| 925 | 166 if 'uri_handlers' in page_data: |
| 167 if not isinstance(page_data, dict): | |
| 168 log.error(_(u'uri_handlers must be a dict')) | |
| 169 else: | |
| 170 for uri_tuple, cb_name in page_data['uri_handlers'].iteritems(): | |
| 171 if len(uri_tuple) != 2 or not isinstance(cb_name, basestring): | |
| 172 log.error(_(u"invalid uri_tuple")) | |
| 173 continue | |
| 174 log.info(_(u'setting {}/{} URIs handler').format(*uri_tuple)) | |
| 175 try: | |
| 176 cb = page_data[cb_name] | |
| 177 except KeyError: | |
| 178 log.error(_(u'missing {name} method to handle {1}/{2}').format( | |
| 179 name = cb_name, *uri_tuple)) | |
| 180 continue | |
| 181 else: | |
| 182 cls.registerURI(uri_tuple, cb, new_path) | |
| 183 | |
| 917 | 184 LiberviaPage.importPages(host, resource, new_path) |
| 185 | |
| 925 | 186 @classmethod |
| 187 def registerURI(cls, uri_tuple, get_uri_cb, pre_path): | |
| 188 """register a URI handler | |
| 189 | |
| 190 @param uri_tuple(tuple[unicode, unicode]): type or URIs handler | |
| 191 type/subtype as returned by tools/common/parseXMPPUri | |
| 192 @param get_uri_cb(callable): method which take uri_data dict as only argument | |
| 193 and return path with correct arguments relative to page itself | |
| 194 @param pre_path(list[unicode]): prefix path to reference the handler page | |
| 195 """ | |
| 196 if uri_tuple in cls.uri_callbacks: | |
| 197 log.info(_(u"{}/{} URIs are already handled, replacing by the new handler").format(*uri_tuple)) | |
| 198 cls.uri_callbacks[uri_tuple] = {u'callback': get_uri_cb, | |
| 199 u'pre_path': pre_path} | |
| 200 | |
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201 def getPagePathFromURI(self, uri): |
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202 """Retrieve page URL from xmpp: URI |
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203 |
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204 @param uri(unicode): URI with a xmpp: scheme |
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205 @return (unicode,None): absolute path (starting from root "/") to page handling the URI |
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206 None is returned if not page has been registered for this URI |
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207 """ |
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208 uri_data = common_uri.parseXMPPUri(uri) |
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209 try: |
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210 callback_data = self.uri_callbacks[uri_data['type'], uri_data.get('sub_type')] |
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211 except KeyError: |
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212 return |
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213 else: |
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214 url = os.path.join(u'/', u'/'.join(callback_data['pre_path']), callback_data['callback'](self, uri_data)) |
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215 return url |
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216 |
| 979 | 217 @classmethod |
| 218 def getPageByName(cls, name): | |
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219 """retrieve page instance from its name |
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220 |
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221 @param name(unicode): name of the page |
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222 @return (LiberviaPage): page instance |
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223 @raise KeyError: the page doesn't exist |
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224 """ |
| 979 | 225 return cls.named_pages[name] |
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226 |
| 962 | 227 def getPageRedirectURL(self, request, page_name=u'login', url=None): |
| 228 """generate URL for a page with redirect_url parameter set | |
| 229 | |
| 230 mainly used for login page with redirection to current page | |
| 231 @param request(server.Request): current HTTP request | |
| 232 @param page_name(unicode): name of the page to go | |
| 233 @param url(None, unicode): url to redirect to | |
| 234 None to use request path (i.e. current page) | |
| 235 @return (unicode): URL to use | |
| 236 """ | |
| 237 return u'{root_url}?redirect_url={redirect_url}'.format( | |
| 238 root_url = self.getPageByName(page_name).url, | |
| 239 redirect_url=urllib.quote_plus(request.uri) if url is None else url.encode('utf-8')) | |
| 240 | |
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241 def getURL(self, *args): |
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242 """retrieve URL of the page set arguments |
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243 |
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244 *args(list[unicode]): argument to add to the URL as path elements |
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245 """ |
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246 url_args = [quote(a) for a in args] |
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247 |
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248 if self.name is not None and self.name in self.pages_redirects: |
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249 # we check for redirection |
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250 redirect_data = self.pages_redirects[self.name] |
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251 args_hash = tuple(args) |
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252 for limit in xrange(len(args)+1): |
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253 current_hash = args_hash[:limit] |
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254 if current_hash in redirect_data: |
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255 url_base = redirect_data[current_hash] |
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256 remaining = args[limit:] |
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257 remaining_url = '/'.join(remaining) |
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258 return os.path.join('/', url_base, remaining_url) |
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259 |
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260 return os.path.join(self.url, *url_args) |
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261 |
|
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262 def getSubPageURL(self, request, page_name, *args): |
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263 """retrieve a page in direct children and build its URL according to request |
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264 |
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265 request's current path is used as base (at current parsing point, |
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266 i.e. it's more prepath than path). |
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267 Requested page is checked in children and an absolute URL is then built |
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268 by the resulting combination. |
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269 This method is useful to construct absolute URLs for children instead of |
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270 using relative path, which may not work in subpages, and are linked to the |
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271 names of directories (i.e. relative URL will break if subdirectory is renamed |
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272 while getSubPageURL won't as long as page_name is consistent). |
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273 Also, request.path is used, keeping real path used by user, |
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274 and potential redirections. |
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275 @param request(server.Request): current HTTP request |
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276 @param page_name(unicode): name of the page to retrieve |
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277 it must be a direct children of current page |
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278 @param *args(list[unicode]): arguments to add as path elements |
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279 @return unicode: absolute URL to the sub page |
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280 """ |
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281 # we get url in the following way (splitting request.path instead of using |
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282 # request.prepath) because request.prepath may have been modified by |
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283 # redirection (if redirection args have been specified), while path reflect |
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284 # the real request |
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285 |
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286 # we ignore empty path elements (i.e. double '/' or '/' at the end) |
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287 path_elts = [p for p in request.path.split('/') if p] |
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288 |
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289 if request.postpath: |
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290 if not request.postpath[-1]: |
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291 # we remove trailing slash |
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292 request.postpath = request.postpath[:-1] |
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293 if request.postpath: |
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294 # getSubPageURL must return subpage from the point where |
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295 # the it is called, so we have to remove remanining |
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296 # path elements |
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297 path_elts = path_elts[:-len(request.postpath)] |
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298 |
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299 current_url = '/' + '/'.join(path_elts).decode('utf-8') |
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300 |
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301 for path, child in self.children.iteritems(): |
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302 try: |
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303 child_name = child.name |
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304 except AttributeError: |
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305 # LiberviaPage have a name, but maybe this is an other Resource |
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306 continue |
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307 if child_name == page_name: |
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308 return os.path.join(u'/', current_url, path, *args) |
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309 raise exceptions.NotFound(_(u'requested sub page has not been found')) |
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310 |
| 917 | 311 def getChildWithDefault(self, path, request): |
| 312 # we handle children ourselves | |
| 313 raise exceptions.InternalError(u"this method should not be used with LiberviaPage") | |
| 314 | |
| 315 def nextPath(self, request): | |
| 316 """get next URL path segment, and update request accordingly | |
| 317 | |
| 318 will move first segment of postpath in prepath | |
| 319 @param request(server.Request): current HTTP request | |
| 320 @return (unicode): unquoted segment | |
| 321 @raise IndexError: there is no segment left | |
| 322 """ | |
| 323 pathElement = request.postpath.pop(0) | |
| 324 request.prepath.append(pathElement) | |
| 325 return urllib.unquote(pathElement).decode('utf-8') | |
| 326 | |
| 962 | 327 def HTTPRedirect(self, request, url): |
| 328 """redirect to an URL using HTTP redirection | |
| 329 | |
| 330 @param request(server.Request): current HTTP request | |
| 331 @param url(unicode): url to redirect to | |
| 332 """ | |
| 333 | |
| 334 web_util.redirectTo(url.encode('utf-8'), request) | |
| 335 request.finish() | |
| 336 raise failure.Failure(exceptions.CancelError(u'HTTP redirection is used')) | |
| 337 | |
| 338 def redirectOrContinue(self, request, redirect_arg=u'redirect_url'): | |
| 339 """helper method to redirect a page to an url given as arg | |
| 340 | |
| 341 if the arg is not present, the page will continue normal workflow | |
| 342 @param request(server.Request): current HTTP request | |
| 343 @param redirect_arg(unicode): argument to use to get redirection URL | |
| 344 @interrupt: redirect the page to requested URL | |
| 345 @interrupt pageError(C.HTTP_BAD_REQUEST): empty or non local URL is used | |
| 346 """ | |
| 347 try: | |
| 348 url = self.getPostedData(request, 'redirect_url') | |
| 349 except KeyError: | |
| 350 pass | |
| 351 else: | |
| 352 # a redirection is requested | |
| 353 if not url or url[0] != u'/': | |
| 354 # we only want local urls | |
| 355 self.pageError(request, C.HTTP_BAD_REQUEST) | |
| 356 else: | |
| 357 self.HTTPRedirect(request, url) | |
| 358 | |
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359 def pageRedirect(self, page_path, request, skip_parse_url=True): |
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|
360 """redirect a page to a named page |
|
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diff
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|
361 |
|
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diff
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|
362 the workflow will continue with the workflow of the named page, |
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server (pages): pages now handle redirection, check self.pageRedirect docstring for details
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diff
changeset
|
363 skipping named page's parse_url method if it exist. |
| 962 | 364 If you want to do a HTTP redirection, use HTTPRedirect |
|
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parents:
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diff
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|
365 @param page_path(unicode): path to page (elements are separated by "/"): |
|
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server (pages): pages now handle redirection, check self.pageRedirect docstring for details
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diff
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|
366 if path starts with a "/": |
|
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diff
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|
367 path is a full path starting from root |
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|
368 else: |
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server (pages): pages now handle redirection, check self.pageRedirect docstring for details
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diff
changeset
|
369 - first element is name as registered in name variable |
|
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server (pages): pages now handle redirection, check self.pageRedirect docstring for details
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parents:
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diff
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|
370 - following element are subpages path |
|
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server (pages): pages now handle redirection, check self.pageRedirect docstring for details
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diff
changeset
|
371 e.g.: "blog" redirect to page named "blog" |
|
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server (pages): pages now handle redirection, check self.pageRedirect docstring for details
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parents:
922
diff
changeset
|
372 "blog/atom.xml" redirect to atom.xml subpage of "blog" |
|
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server (pages): pages now handle redirection, check self.pageRedirect docstring for details
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parents:
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diff
changeset
|
373 "/common/blog/atom.xml" redirect to the page at the fiven full path |
|
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server (pages): pages now handle redirection, check self.pageRedirect docstring for details
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parents:
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diff
changeset
|
374 @param request(server.Request): current HTTP request |
|
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server (pages): pages now handle redirection, check self.pageRedirect docstring for details
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diff
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|
375 @param skip_parse_url(bool): if True, parse_url method on redirect page will be skipped |
|
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server (pages): pages now handle redirection, check self.pageRedirect docstring for details
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diff
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|
376 @raise KeyError: there is no known page with this name |
|
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server (pages): pages now handle redirection, check self.pageRedirect docstring for details
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diff
changeset
|
377 """ |
|
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server (pages): pages now handle redirection, check self.pageRedirect docstring for details
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diff
changeset
|
378 # FIXME: render non LiberviaPage resources |
|
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server (pages): pages now handle redirection, check self.pageRedirect docstring for details
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diff
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|
379 path = page_path.rstrip(u'/').split(u'/') |
|
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server (pages): pages now handle redirection, check self.pageRedirect docstring for details
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diff
changeset
|
380 if not path[0]: |
|
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server (pages): pages now handle redirection, check self.pageRedirect docstring for details
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922
diff
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|
381 redirect_page = self.host.root |
|
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server (pages): pages now handle redirection, check self.pageRedirect docstring for details
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parents:
922
diff
changeset
|
382 else: |
|
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922
diff
changeset
|
383 redirect_page = self.named_pages[path[0]] |
|
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server (pages): pages now handle redirection, check self.pageRedirect docstring for details
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parents:
922
diff
changeset
|
384 |
|
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server (pages): pages now handle redirection, check self.pageRedirect docstring for details
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diff
changeset
|
385 for subpage in path[1:]: |
| 962 | 386 if redirect_page is self.host.root: |
| 387 redirect_page = redirect_page.children[subpage] | |
| 388 else: | |
| 389 redirect_page = redirect_page.original.children[subpage] | |
|
923
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diff
changeset
|
390 |
|
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server (pages): pages now handle redirection, check self.pageRedirect docstring for details
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diff
changeset
|
391 redirect_page.renderPage(request, skip_parse_url=True) |
|
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server (pages): pages now handle redirection, check self.pageRedirect docstring for details
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diff
changeset
|
392 raise failure.Failure(exceptions.CancelError(u'page redirection is used')) |
|
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server (pages): pages now handle redirection, check self.pageRedirect docstring for details
Goffi <goffi@goffi.org>
parents:
922
diff
changeset
|
393 |
|
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
|
394 def pageError(self, request, code=C.HTTP_NOT_FOUND): |
| 917 | 395 """generate an error page and terminate the request |
| 396 | |
| 397 @param request(server.Request): HTTP request | |
| 398 @param core(int): error code to use | |
| 399 """ | |
| 400 template = u'error/' + unicode(code) + '.html' | |
| 401 | |
| 402 request.setResponseCode(code) | |
| 403 | |
| 404 rendered = self.host.renderer.render( | |
| 405 template, | |
| 406 root_path = '/templates/', | |
| 407 error_code = code, | |
| 408 **request.template_data) | |
| 409 | |
| 410 self.writeData(rendered, request) | |
| 411 raise failure.Failure(exceptions.CancelError(u'error page is used')) | |
| 412 | |
| 413 def writeData(self, data, request): | |
|
937
00236973e138
server (pages): an HTTP internal error is raised if an error is uncatched during page workflow
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936
diff
changeset
|
414 """write data to transport and finish the request""" |
| 917 | 415 if data is None: |
| 416 self.pageError(request) | |
| 417 request.write(data.encode('utf-8')) | |
| 418 request.finish() | |
| 419 | |
| 420 def _subpagesHandler(self, dummy, request): | |
| 421 """render subpage if suitable | |
| 422 | |
| 423 this method checks if there is still an unmanaged part of the path | |
| 424 and check if it corresponds to a subpage. If so, it render the subpage | |
| 425 else it render a NoResource. | |
| 426 If there is no unmanaged part of the segment, current page workflow is pursued | |
| 427 """ | |
| 428 if request.postpath: | |
| 429 subpage = self.nextPath(request) | |
| 430 try: | |
| 431 child = self.children[subpage] | |
| 432 except KeyError: | |
| 433 self.pageError(request) | |
| 434 else: | |
| 435 child.render(request) | |
| 436 raise failure.Failure(exceptions.CancelError(u'subpage page is used')) | |
| 437 | |
| 438 def _prepare_render(self, dummy, request): | |
|
926
612e33fd32a8
server (pages): fixed _prepare_render handling
Goffi <goffi@goffi.org>
parents:
925
diff
changeset
|
439 return defer.maybeDeferred(self.prepare_render, self, request) |
| 917 | 440 |
| 441 def _render_method(self, dummy, request): | |
| 442 return defer.maybeDeferred(self.render_method, self, request) | |
| 443 | |
| 962 | 444 def _render_template(self, dummy, request): |
| 445 template_data = request.template_data | |
| 446 | |
| 447 # if confirm variable is set in case of successfuly data post | |
| 448 session_data = self.host.getSessionData(request, session_iface.ISATSession) | |
| 449 if session_data.popPageFlag(self, C.FLAG_CONFIRM): | |
| 450 template_data[u'confirm'] = True | |
| 451 | |
| 917 | 452 return self.host.renderer.render( |
| 453 self.template, | |
| 454 root_path = '/templates/', | |
| 962 | 455 media_path = '/' + C.MEDIA_DIR, |
| 917 | 456 **template_data) |
| 457 | |
| 458 def _renderEb(self, failure_, request): | |
| 459 """don't raise error on CancelError""" | |
| 460 failure_.trap(exceptions.CancelError) | |
| 461 | |
|
937
00236973e138
server (pages): an HTTP internal error is raised if an error is uncatched during page workflow
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parents:
936
diff
changeset
|
462 def _internalError(self, failure_, request): |
|
00236973e138
server (pages): an HTTP internal error is raised if an error is uncatched during page workflow
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936
diff
changeset
|
463 """called if an error is not catched""" |
|
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changeset
|
464 log.error(_(u"Uncatched error for HTTP request on {url}: {msg}").format( |
|
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936
diff
changeset
|
465 url = request.URLPath(), |
|
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diff
changeset
|
466 msg = failure_)) |
|
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diff
changeset
|
467 self.pageError(request, C.HTTP_INTERNAL_ERROR) |
|
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936
diff
changeset
|
468 |
|
956
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955
diff
changeset
|
469 def _on_data_post_redirect(self, ret, request): |
|
968
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diff
changeset
|
470 """called when page's on_data_post has been done successfuly |
|
956
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955
diff
changeset
|
471 |
|
968
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966
diff
changeset
|
472 This will do a Post/Redirect/Get pattern. |
|
4d37b23777c3
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966
diff
changeset
|
473 this method redirect to the same page or to request.data['post_redirect_page'] |
|
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diff
changeset
|
474 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
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966
diff
changeset
|
475 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
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diff
changeset
|
476 HTTP status code "See Other" (303) is used as it is the recommanded code in this case. |
| 962 | 477 @param ret(None, unicode, iterable): on_data_post return value |
| 478 see LiberviaPage.__init__ on_data_post docstring | |
|
956
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diff
changeset
|
479 """ |
| 962 | 480 if ret is None: |
| 481 ret = () | |
| 482 elif isinstance(ret, basestring): | |
| 483 ret = (ret,) | |
| 484 else: | |
| 485 ret = tuple(ret) | |
| 486 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>
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956
diff
changeset
|
487 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
|
488 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
|
489 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
|
490 redirect_page_data = request_data['post_redirect_page'] |
|
968
4d37b23777c3
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966
diff
changeset
|
491 if isinstance(redirect_page_data, tuple): |
|
4d37b23777c3
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966
diff
changeset
|
492 redirect_page = redirect_page_data[0] |
|
972
c4e58c4dba75
server: getURL + minor improvments:
Goffi <goffi@goffi.org>
parents:
968
diff
changeset
|
493 redirect_page_args = redirect_page_data[1:] |
|
c4e58c4dba75
server: getURL + minor improvments:
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968
diff
changeset
|
494 redirect_uri = redirect_page.getURL(*redirect_page_args) |
|
968
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diff
changeset
|
495 else: |
|
4d37b23777c3
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966
diff
changeset
|
496 redirect_page = redirect_page_data |
|
972
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diff
changeset
|
497 redirect_uri = redirect_page.url |
|
968
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diff
changeset
|
498 else: |
|
4d37b23777c3
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966
diff
changeset
|
499 redirect_page = self |
|
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diff
changeset
|
500 redirect_uri = request.uri |
|
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966
diff
changeset
|
501 |
| 962 | 502 if not C.POST_NO_CONFIRM in ret: |
|
968
4d37b23777c3
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Goffi <goffi@goffi.org>
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966
diff
changeset
|
503 session_data.setPageFlag(redirect_page, C.FLAG_CONFIRM) |
|
956
dabecab10faa
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955
diff
changeset
|
504 request.setResponseCode(C.HTTP_SEE_OTHER) |
|
968
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966
diff
changeset
|
505 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
|
506 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
|
507 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)
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parents:
950
diff
changeset
|
508 |
|
956
dabecab10faa
server (pages): impleted CSRF protection:
Goffi <goffi@goffi.org>
parents:
955
diff
changeset
|
509 def _on_data_post(self, dummy, request): |
|
dabecab10faa
server (pages): impleted CSRF protection:
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parents:
955
diff
changeset
|
510 csrf_token = self.host.getSessionData(request, session_iface.ISATSession).csrf_token |
|
dabecab10faa
server (pages): impleted CSRF protection:
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parents:
955
diff
changeset
|
511 try: |
|
dabecab10faa
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parents:
955
diff
changeset
|
512 given_csrf = self.getPostedData(request, u'csrf_token') |
|
dabecab10faa
server (pages): impleted CSRF protection:
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parents:
955
diff
changeset
|
513 except KeyError: |
|
dabecab10faa
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parents:
955
diff
changeset
|
514 given_csrf = None |
|
dabecab10faa
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parents:
955
diff
changeset
|
515 if given_csrf is None or given_csrf != csrf_token: |
|
dabecab10faa
server (pages): impleted CSRF protection:
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parents:
955
diff
changeset
|
516 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
|
517 url=request.uri, |
|
dabecab10faa
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diff
changeset
|
518 ip=request.getClientIP())) |
|
dabecab10faa
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parents:
955
diff
changeset
|
519 self.pageError(request, C.HTTP_UNAUTHORIZED) |
|
dabecab10faa
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parents:
955
diff
changeset
|
520 d = defer.maybeDeferred(self.on_data_post, self, request) |
|
dabecab10faa
server (pages): impleted CSRF protection:
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parents:
955
diff
changeset
|
521 d.addCallback(self._on_data_post_redirect, request) |
|
dabecab10faa
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parents:
955
diff
changeset
|
522 return d |
|
dabecab10faa
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parents:
955
diff
changeset
|
523 |
|
931
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
524 def getPostedData(self, request, keys, multiple=False): |
|
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
525 """get data from a POST request and decode it |
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526 |
|
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527 @param request(server.Request): request linked to the session |
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528 @param keys(unicode, iterable[unicode]): name of the value(s) to get |
|
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529 unicode to get one value |
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530 iterable to get more than one |
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|
531 @param multiple(bool): True if multiple values are possible/expected |
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532 if False, the first value is returned |
|
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533 @return (iterator[unicode], list[iterator[unicode], unicode, list[unicode]): values received for this(these) key(s) |
|
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534 @raise KeyError: one specific key has been requested, and it is missing |
|
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|
535 """ |
|
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|
536 if isinstance(keys, basestring): |
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537 keys = [keys] |
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|
538 get_first = True |
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539 else: |
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|
540 get_first = False |
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|
541 |
|
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|
542 ret = [] |
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|
543 for key in keys: |
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544 gen = (urllib.unquote(v).decode('utf-8') for v in request.args.get(key,[])) |
|
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545 if multiple: |
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|
546 ret.append(gen) |
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547 else: |
|
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|
548 try: |
|
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|
549 ret.append(next(gen)) |
|
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550 except StopIteration: |
| 962 | 551 raise KeyError(key) |
|
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|
552 |
|
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|
553 return ret[0] if get_first else ret |
|
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|
554 |
| 959 | 555 def getAllPostedData(self, request, except_=()): |
| 556 """get all posted data | |
| 557 | |
| 558 @param request(server.Request): request linked to the session | |
| 559 @param except_(iterable[unicode]): key of values to ignore | |
| 560 csrf_token will always be ignored | |
| 561 @return (dict[unicode, list[unicode]]): post values | |
| 562 """ | |
| 563 except_ = tuple(except_) + (u'csrf_token',) | |
| 564 ret = {} | |
| 565 for key, values in request.args.iteritems(): | |
| 566 key = urllib.unquote(key).decode('utf-8') | |
| 567 if key in except_: | |
| 568 continue | |
| 569 ret[key] = [urllib.unquote(v).decode('utf-8') for v in values] | |
| 570 return ret | |
| 571 | |
|
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572 def getProfile(self, request): |
|
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573 """helper method to easily get current profile |
|
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574 |
|
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575 @return (unicode, None): current profile |
|
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576 None if no profile session is started |
|
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577 """ |
|
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578 sat_session = self.host.getSessionData(request, session_iface.ISATSession) |
|
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|
579 return sat_session.profile |
|
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580 |
|
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|
581 def getRData(self, request): |
|
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|
582 """helper method to get request data dict |
|
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|
583 |
|
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|
584 this dictionnary if for the request only, it is not saved in session |
|
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585 It is mainly used to pass data between pages/methods called during request workflow |
|
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|
586 @return (dict): request data |
|
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587 """ |
|
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|
588 try: |
|
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|
589 return request.data |
|
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|
590 except AttributeError: |
|
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|
591 request.data = {} |
|
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|
592 return request.data |
|
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|
593 |
|
16d1084d1371
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|
594 def _checkAccess(self, data, request): |
|
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|
595 """Check access according to self.access |
|
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|
596 |
|
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|
597 if access is not granted, show a HTTP_UNAUTHORIZED pageError and stop request, |
|
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|
598 else return data (so it can be inserted in deferred chain |
|
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|
599 """ |
|
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|
600 if self.access == C.PAGES_ACCESS_PUBLIC: |
|
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|
601 pass |
|
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|
602 elif self.access == C.PAGES_ACCESS_PROFILE: |
|
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|
603 profile = self.getProfile(request) |
|
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|
604 if not profile: |
| 962 | 605 # no session started |
| 606 if not self.host.options["allow_registration"]: | |
| 607 # registration not allowed, access is not granted | |
| 608 self.pageError(request, C.HTTP_UNAUTHORIZED) | |
| 609 else: | |
| 610 # registration allowed, we redirect to login page | |
| 611 login_url = self.getPageRedirectURL(request) | |
| 612 self.HTTPRedirect(request, login_url) | |
|
922
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|
613 |
|
16d1084d1371
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|
614 return data |
|
16d1084d1371
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|
615 |
|
923
edb322c87ea4
server (pages): pages now handle redirection, check self.pageRedirect docstring for details
Goffi <goffi@goffi.org>
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922
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|
616 def renderPage(self, request, skip_parse_url=False): |
|
937
00236973e138
server (pages): an HTTP internal error is raised if an error is uncatched during page workflow
Goffi <goffi@goffi.org>
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936
diff
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|
617 """Main method to handle the workflow of a LiberviaPage""" |
|
923
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Goffi <goffi@goffi.org>
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922
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|
618 # template_data are the variables passed to template |
| 917 | 619 if not hasattr(request, 'template_data'): |
|
957
67bf14c91d5c
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956
diff
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|
620 session_data = self.host.getSessionData(request, session_iface.ISATSession) |
|
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956
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|
621 csrf_token = session_data.csrf_token |
|
67bf14c91d5c
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changeset
|
622 request.template_data = {u'csrf_token': csrf_token} |
|
922
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|
623 |
|
16d1084d1371
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|
624 # XXX: here is the code which need to be executed once |
|
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|
625 # at the beginning of the request hanling |
| 917 | 626 if request.postpath and not request.postpath[-1]: |
| 627 # we don't differenciate URLs finishing with '/' or not | |
| 628 del request.postpath[-1] | |
|
922
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|
629 |
| 917 | 630 d = defer.Deferred() |
|
922
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|
631 d.addCallback(self._checkAccess, request) |
|
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changeset
|
632 |
|
923
edb322c87ea4
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Goffi <goffi@goffi.org>
parents:
922
diff
changeset
|
633 if self.redirect is not None: |
|
edb322c87ea4
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|
634 self.pageRedirect(self.redirect, request, skip_parse_url=False) |
|
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changeset
|
635 |
|
edb322c87ea4
server (pages): pages now handle redirection, check self.pageRedirect docstring for details
Goffi <goffi@goffi.org>
parents:
922
diff
changeset
|
636 if self.parse_url is not None and not skip_parse_url: |
| 917 | 637 d.addCallback(self.parse_url, request) |
| 638 | |
| 639 d.addCallback(self._subpagesHandler, request) | |
| 640 | |
|
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|
641 if request.method not in (C.HTTP_METHOD_GET, C.HTTP_METHOD_POST): |
|
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|
642 # only HTTP GET and POST are handled so far |
|
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|
643 d.addCallback(lambda dummy: self.pageError(request, C.HTTP_BAD_REQUEST)) |
|
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|
644 |
|
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|
645 if request.method == C.HTTP_METHOD_POST: |
|
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|
646 if self.on_data_post is None: |
|
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|
647 # if we don't have on_data_post, the page was not expecting POST |
|
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|
648 # so we return an error |
|
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|
649 d.addCallback(lambda dummy: self.pageError(request, C.HTTP_BAD_REQUEST)) |
|
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|
650 else: |
|
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|
651 d.addCallback(self._on_data_post, request) |
|
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|
652 # by default, POST follow normal behaviour after on_data_post is called |
|
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changeset
|
653 # this can be changed by a redirection or other method call in on_data_post |
|
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|
654 |
| 917 | 655 if self.prepare_render: |
| 656 d.addCallback(self._prepare_render, request) | |
| 657 | |
| 658 if self.template: | |
| 962 | 659 d.addCallback(self._render_template, request) |
| 917 | 660 elif self.render_method: |
| 661 d.addCallback(self._render_method, request) | |
| 662 | |
| 663 d.addCallback(self.writeData, request) | |
| 664 d.addErrback(self._renderEb, request) | |
|
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
|
665 d.addErrback(self._internalError, request) |
| 917 | 666 d.callback(self) |
| 667 return server.NOT_DONE_YET | |
| 668 | |
|
923
edb322c87ea4
server (pages): pages now handle redirection, check self.pageRedirect docstring for details
Goffi <goffi@goffi.org>
parents:
922
diff
changeset
|
669 def render_GET(self, request): |
|
edb322c87ea4
server (pages): pages now handle redirection, check self.pageRedirect docstring for details
Goffi <goffi@goffi.org>
parents:
922
diff
changeset
|
670 return self.renderPage(request) |
|
edb322c87ea4
server (pages): pages now handle redirection, check self.pageRedirect docstring for details
Goffi <goffi@goffi.org>
parents:
922
diff
changeset
|
671 |
|
931
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
672 def render_POST(self, request): |
|
8a393ae90f8c
server (pages): post requests are now handled:
Goffi <goffi@goffi.org>
parents:
927
diff
changeset
|
673 return self.renderPage(request) |