web/request.py
author Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
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[javascript][facets] facetargs wasn't evaluated in all cases
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"""abstract class for http request
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:organization: Logilab
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:copyright: 2001-2008 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
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:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
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"""
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__docformat__ = "restructuredtext en"
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import Cookie
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import sha
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import time
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import random
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import base64
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from urlparse import urlsplit
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from itertools import count
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from rql.utils import rqlvar_maker
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from logilab.common.decorators import cached
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# XXX move _MARKER here once AppObject.external_resource has been removed
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from cubicweb.dbapi import DBAPIRequest
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from cubicweb.common.appobject import _MARKER 
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from cubicweb.common.mail import header
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from cubicweb.common.uilib import remove_html_tags
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from cubicweb.common.utils import SizeConstrainedList, HTMLHead
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from cubicweb.web import (INTERNAL_FIELD_VALUE, LOGGER, NothingToEdit, RequestError,
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                       StatusResponse)
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def list_form_param(form, param, pop=False):
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    """get param from form parameters and return its value as a list,
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    skipping internal markers if any
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    * if the parameter isn't defined, return an empty list
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    * if the parameter is a single (unicode) value, return a list
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      containing that value
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    * if the parameter is already a list or tuple, just skip internal
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      markers
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    if pop is True, the parameter is removed from the form dictionnary
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    """
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    if pop:
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        try:
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            value = form.pop(param)
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        except KeyError:
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            return []
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    else:
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        value = form.get(param, ())
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    if value is None:
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        value = ()
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    elif not isinstance(value, (list, tuple)):
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        value = [value]
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    return [v for v in value if v != INTERNAL_FIELD_VALUE]
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class CubicWebRequestBase(DBAPIRequest):
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    """abstract HTTP request, should be extended according to the HTTP backend"""    
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    def __init__(self, vreg, https, form=None):
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        super(CubicWebRequestBase, self).__init__(vreg)
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        self.message = None
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        self.authmode = vreg.config['auth-mode']
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        self.https = https
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        # raw html headers that can be added from any view
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        self.html_headers = HTMLHead()
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        # form parameters
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        self.setup_params(form)
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        # dictionnary that may be used to store request data that has to be
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        # shared among various components used to publish the request (views,
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        # controller, application...)
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        self.data = {}
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        # search state: 'normal' or 'linksearch' (eg searching for an object
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        # to create a relation with another)
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        self.search_state = ('normal',) 
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        # tabindex generator
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        self.tabindexgen = count()
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        self.next_tabindex = self.tabindexgen.next
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        # page id, set by htmlheader template
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        self.pageid = None
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        self.varmaker = rqlvar_maker()
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        self.datadir_url = self._datadir_url()
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    def set_connection(self, cnx, user=None):
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        """method called by the session handler when the user is authenticated
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        or an anonymous connection is open
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        """
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        super(CubicWebRequestBase, self).set_connection(cnx, user)
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        # get request language:
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        vreg = self.vreg
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        if self.user:
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            try:
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                # 1. user specified language
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                lang = vreg.typed_value('ui.language',
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                                        self.user.properties['ui.language'])
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                self.set_language(lang)
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                return
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            except KeyError, ex:
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                pass
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        if vreg.config['language-negociation']:
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            # 2. http negociated language
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            for lang in self.header_accept_language():
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                if lang in self.translations:
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                    self.set_language(lang)
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                    return
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        # 3. default language
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        self.set_default_language(vreg)
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    def set_language(self, lang):
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        self._ = self.__ = self.translations[lang]
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        self.lang = lang
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        self.debug('request language: %s', lang)
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    # input form parameters management ########################################
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    # common form parameters which should be protected against html values
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    # XXX can't add 'eid' for instance since it may be multivalued
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    # dont put rql as well, if query contains < and > it will be corrupted!
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    no_script_form_params = set(('vid', 
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                                 'etype', 
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                                 'vtitle', 'title',
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                                 '__message',
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                                 '__redirectvid', '__redirectrql'))
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    def setup_params(self, params):
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        """WARNING: we're intentionaly leaving INTERNAL_FIELD_VALUE here
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        subclasses should overrides to 
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        """
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        if params is None:
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            params = {}
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        self.form = params
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        encoding = self.encoding
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        for k, v in params.items():
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            if isinstance(v, (tuple, list)):
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                v = [unicode(x, encoding) for x in v]
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                if len(v) == 1:
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                    v = v[0]
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            if k in self.no_script_form_params:
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                v = self.no_script_form_param(k, value=v)
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            if isinstance(v, str):
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                v = unicode(v, encoding)
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            if k == '__message':
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                self.set_message(v)
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                del self.form[k]
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            else:
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                self.form[k] = v
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    def no_script_form_param(self, param, default=None, value=None):
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        """ensure there is no script in a user form param
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        by default return a cleaned string instead of raising a security
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        exception
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        this method should be called on every user input (form at least) fields
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        that are at some point inserted in a generated html page to protect
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        against script kiddies
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        """
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        if value is None:
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            value = self.form.get(param, default)
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        if not value is default and value:
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            # safety belt for strange urls like http://...?vtitle=yo&vtitle=yo
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            if isinstance(value, (list, tuple)):
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                self.error('no_script_form_param got a list (%s). Who generated the URL ?',
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                           repr(value))
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                value = value[0]
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            return remove_html_tags(value)
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        return value
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    def list_form_param(self, param, form=None, pop=False):
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        """get param from form parameters and return its value as a list,
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        skipping internal markers if any
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        * if the parameter isn't defined, return an empty list
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        * if the parameter is a single (unicode) value, return a list
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          containing that value
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        * if the parameter is already a list or tuple, just skip internal
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   179
          markers
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        if pop is True, the parameter is removed from the form dictionnary
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   182
        """
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   183
        if form is None:
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   184
            form = self.form
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   185
        return list_form_param(form, param, pop)            
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   188
    def reset_headers(self):
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        """used by AutomaticWebTest to clear html headers between tests on
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        the same resultset
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   191
        """
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        self.html_headers = HTMLHead()
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   193
        return self
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    # web state helpers #######################################################
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   196
    
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    def set_message(self, msg):
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        assert isinstance(msg, unicode)
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        self.message = msg
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    def update_search_state(self):
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        """update the current search state"""
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   203
        searchstate = self.form.get('__mode')
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   204
        if not searchstate:
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            searchstate = self.get_session_data('search_state', 'normal')
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   206
        self.set_search_state(searchstate)
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    def set_search_state(self, searchstate):
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        """set a new search state"""
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   210
        if searchstate is None or searchstate == 'normal':
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   211
            self.search_state = (searchstate or 'normal',)
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   212
        else:
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   213
            self.search_state = ('linksearch', searchstate.split(':'))
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   214
            assert len(self.search_state[-1]) == 4
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   215
        self.set_session_data('search_state', searchstate)
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   216
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    def update_breadcrumbs(self):
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   218
        """stores the last visisted page in session data"""
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   219
        searchstate = self.get_session_data('search_state')
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   220
        if searchstate == 'normal':
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   221
            breadcrumbs = self.get_session_data('breadcrumbs', None)
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   222
            if breadcrumbs is None:
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                breadcrumbs = SizeConstrainedList(10)
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   224
                self.set_session_data('breadcrumbs', breadcrumbs)
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   225
            breadcrumbs.append(self.url())
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    def last_visited_page(self):
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        breadcrumbs = self.get_session_data('breadcrumbs', None)
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   229
        if breadcrumbs:
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   230
            return breadcrumbs.pop()
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   231
        return self.base_url()
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   232
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   233
    def register_onetime_callback(self, func, *args):
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   234
        cbname = 'cb_%s' % (
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   235
            sha.sha('%s%s%s%s' % (time.time(), func.__name__,
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   236
                                  random.random(), 
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   237
                                  self.user.login)).hexdigest())
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   238
        def _cb(req):
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   239
            try:
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   240
                ret = func(req, *args)
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diff changeset
   241
            except TypeError:
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   242
                from warnings import warn
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   243
                warn('user callback should now take request as argument')
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   244
                ret = func(*args)            
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   245
            self.unregister_callback(self.pageid, cbname)
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   246
            return ret
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diff changeset
   247
        self.set_page_data(cbname, _cb)
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   248
        return cbname
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diff changeset
   249
    
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   250
    def unregister_callback(self, pageid, cbname):
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   251
        assert pageid is not None
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   252
        assert cbname.startswith('cb_')
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   253
        self.info('unregistering callback %s for pageid %s', cbname, pageid)
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   254
        self.del_page_data(cbname)
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diff changeset
   255
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   256
    def clear_user_callbacks(self):
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   257
        if self.cnx is not None:
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   258
            sessdata = self.session_data()
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   259
            callbacks = [key for key in sessdata if key.startswith('cb_')]
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   260
            for callback in callbacks:
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   261
                self.del_session_data(callback)
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   262
    
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   263
    # web edition helpers #####################################################
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   264
    
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   265
    @cached # so it's writed only once
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    def fckeditor_config(self):
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   267
        self.html_headers.define_var('fcklang', self.lang)
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parents:
diff changeset
   268
        self.html_headers.define_var('fckconfigpath',
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parents:
diff changeset
   269
                                     self.build_url('data/fckcwconfig.js'))
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parents:
diff changeset
   270
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parents:
diff changeset
   271
    def edited_eids(self, withtype=False):
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parents:
diff changeset
   272
        """return a list of edited eids"""
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   273
        yielded = False
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parents:
diff changeset
   274
        # warning: use .keys since the caller may change `form`
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parents:
diff changeset
   275
        form = self.form
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   276
        try:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   277
            eids = form['eid']
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   278
        except KeyError:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   279
            raise NothingToEdit(None, {None: self._('no selected entities')})
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   280
        if isinstance(eids, basestring):
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   281
            eids = (eids,)
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   282
        for peid in eids:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   283
            if withtype:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   284
                typekey = '__type:%s' % peid
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   285
                assert typekey in form, 'no entity type specified'
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   286
                yield peid, form[typekey]
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   287
            else:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   288
                yield peid
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   289
            yielded = True
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   290
        if not yielded:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   291
            raise NothingToEdit(None, {None: self._('no selected entities')})
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   292
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   293
    # minparams=3 by default: at least eid, __type, and some params to change
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   294
    def extract_entity_params(self, eid, minparams=3):
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   295
        """extract form parameters relative to the given eid"""
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   296
        params = {}
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   297
        eid = str(eid)
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   298
        form = self.form
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   299
        for param in form:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   300
            try:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   301
                name, peid = param.split(':', 1)
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   302
            except ValueError:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   303
                if not param.startswith('__') and param != "eid":
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   304
                    self.warning('param %s mis-formatted', param)
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   305
                continue
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   306
            if peid == eid:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   307
                value = form[param]
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   308
                if value == INTERNAL_FIELD_VALUE:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   309
                    value = None
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   310
                params[name] = value
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   311
        params['eid'] = eid
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   312
        if len(params) < minparams:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   313
            print eid, params
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   314
            raise RequestError(self._('missing parameters for entity %s') % eid)
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   315
        return params
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   316
    
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   317
    def get_pending_operations(self, entity, relname, role):
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   318
        operations = {'insert' : [], 'delete' : []}
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   319
        for optype in ('insert', 'delete'):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   320
            data = self.get_session_data('pending_%s' % optype) or ()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   321
            for eidfrom, rel, eidto in data:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   322
                if relname == rel:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   323
                    if role == 'subject' and entity.eid == eidfrom:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   324
                        operations[optype].append(eidto)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   325
                    if role == 'object' and entity.eid == eidto:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   326
                        operations[optype].append(eidfrom)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   327
        return operations
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   328
    
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   329
    def get_pending_inserts(self, eid=None):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   330
        """shortcut to access req's pending_insert entry
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   331
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   332
        This is where are stored relations being added while editing
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   333
        an entity. This used to be stored in a temporary cookie.
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   334
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   335
        pending = self.get_session_data('pending_insert') or ()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   336
        return ['%s:%s:%s' % (subj, rel, obj) for subj, rel, obj in pending
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   337
                if eid is None or eid in (subj, obj)]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   338
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   339
    def get_pending_deletes(self, eid=None):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   340
        """shortcut to access req's pending_delete entry
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   341
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   342
        This is where are stored relations being removed while editing
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   343
        an entity. This used to be stored in a temporary cookie.
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   344
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   345
        pending = self.get_session_data('pending_delete') or ()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   346
        return ['%s:%s:%s' % (subj, rel, obj) for subj, rel, obj in pending
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   347
                if eid is None or eid in (subj, obj)]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   348
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   349
    def remove_pending_operations(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   350
        """shortcut to clear req's pending_{delete,insert} entries
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   351
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   352
        This is needed when the edition is completed (whether it's validated
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   353
        or cancelled)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   354
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   355
        self.del_session_data('pending_insert')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   356
        self.del_session_data('pending_delete')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   357
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   358
    def cancel_edition(self, errorurl):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   359
        """remove pending operations and `errorurl`'s specific stored data
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   360
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   361
        self.del_session_data(errorurl)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   362
        self.remove_pending_operations()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   363
    
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   364
    # high level methods for HTTP headers management ##########################
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   365
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   366
    # must be cached since login/password are popped from the form dictionary
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   367
    # and this method may be called multiple times during authentication
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   368
    @cached
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   369
    def get_authorization(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   370
        """Parse and return the Authorization header"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   371
        if self.authmode == "cookie":
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   372
            try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   373
                user = self.form.pop("__login")
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   374
                passwd = self.form.pop("__password", '')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   375
                return user, passwd.encode('UTF8')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   376
            except KeyError:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   377
                self.debug('no login/password in form params')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   378
                return None, None
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   379
        else:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   380
            return self.header_authorization()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   381
    
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   382
    def get_cookie(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   383
        """retrieve request cookies, returns an empty cookie if not found"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   384
        try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   385
            return Cookie.SimpleCookie(self.get_header('Cookie'))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   386
        except KeyError:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   387
            return Cookie.SimpleCookie()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   388
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   389
    def set_cookie(self, cookie, key, maxage=300):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   390
        """set / update a cookie key
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   391
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   392
        by default, cookie will be available for the next 5 minutes.
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   393
        Give maxage = None to have a "session" cookie expiring when the
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   394
        client close its browser
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   395
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   396
        morsel = cookie[key]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   397
        if maxage is not None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   398
            morsel['Max-Age'] = maxage
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   399
        # make sure cookie is set on the correct path
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   400
        morsel['path'] = self.base_url_path()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   401
        self.add_header('Set-Cookie', morsel.OutputString())
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   402
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   403
    def remove_cookie(self, cookie, key):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   404
        """remove a cookie by expiring it"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   405
        morsel = cookie[key]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   406
        morsel['Max-Age'] = 0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   407
        # The only way to set up cookie age for IE is to use an old "expired"
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   408
        # syntax. IE doesn't support Max-Age there is no library support for
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   409
        # managing 
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   410
        # ===> Do _NOT_ comment this line :
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   411
        morsel['expires'] = 'Thu, 01-Jan-1970 00:00:00 GMT'
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   412
        self.add_header('Set-Cookie', morsel.OutputString())
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   413
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   414
    def set_content_type(self, content_type, filename=None, encoding=None):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   415
        """set output content type for this request. An optional filename
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   416
        may be given
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   417
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   418
        if content_type.startswith('text/'):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   419
            content_type += ';charset=' + (encoding or self.encoding)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   420
        self.set_header('content-type', content_type)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   421
        if filename:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   422
            if isinstance(filename, unicode):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   423
                filename = header(filename).encode()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   424
            self.set_header('content-disposition', 'inline; filename=%s'
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   425
                            % filename)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   426
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   427
    # high level methods for HTML headers management ##########################
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   428
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   429
    def add_js(self, jsfiles, localfile=True):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   430
        """specify a list of JS files to include in the HTML headers
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   431
        :param jsfiles: a JS filename or a list of JS filenames
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   432
        :param localfile: if True, the default data dir prefix is added to the
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   433
                          JS filename
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   434
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   435
        if isinstance(jsfiles, basestring):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   436
            jsfiles = (jsfiles,)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   437
        for jsfile in jsfiles:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   438
            if localfile:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   439
                jsfile = self.datadir_url + jsfile
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   440
            self.html_headers.add_js(jsfile)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   441
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   442
    def add_css(self, cssfiles, media=u'all', localfile=True, ieonly=False):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   443
        """specify a CSS file to include in the HTML headers
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   444
        :param cssfiles: a CSS filename or a list of CSS filenames
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   445
        :param media: the CSS's media if necessary
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   446
        :param localfile: if True, the default data dir prefix is added to the
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   447
                          CSS filename
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   448
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   449
        if isinstance(cssfiles, basestring):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   450
            cssfiles = (cssfiles,)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   451
        if ieonly:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   452
            if self.ie_browser():
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   453
                add_css = self.html_headers.add_ie_css
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   454
            else:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   455
                return # no need to do anything on non IE browsers
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   456
        else:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   457
            add_css = self.html_headers.add_css
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   458
        for cssfile in cssfiles:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   459
            if localfile:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   460
                cssfile = self.datadir_url + cssfile
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   461
            add_css(cssfile, media)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   462
    
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   463
    # urls/path management ####################################################
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   464
    
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   465
    def url(self, includeparams=True):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   466
        """return currently accessed url"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   467
        return self.base_url() + self.relative_path(includeparams)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   468
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   469
    def _datadir_url(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   470
        """return url of the application's data directory"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   471
        return self.base_url() + 'data%s/' % self.vreg.config.instance_md5_version()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   472
    
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   473
    def selected(self, url):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   474
        """return True if the url is equivalent to currently accessed url"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   475
        reqpath = self.relative_path().lower()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   476
        baselen = len(self.base_url())
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   477
        return (reqpath == url[baselen:].lower())
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   478
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   479
    def base_url_prepend_host(self, hostname):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   480
        protocol, roothost = urlsplit(self.base_url())[:2]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   481
        if roothost.startswith('www.'):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   482
            roothost = roothost[4:]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   483
        return '%s://%s.%s' % (protocol, hostname, roothost)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   484
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   485
    def base_url_path(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   486
        """returns the absolute path of the base url"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   487
        return urlsplit(self.base_url())[2]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   488
        
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   489
    @cached
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   490
    def from_controller(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   491
        """return the id (string) of the controller issuing the request"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   492
        controller = self.relative_path(False).split('/', 1)[0]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   493
        registered_controllers = (ctrl.id for ctrl in
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   494
                                  self.vreg.registry_objects('controllers'))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   495
        if controller in registered_controllers:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   496
            return controller
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   497
        return 'view'
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   498
    
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   499
    def external_resource(self, rid, default=_MARKER):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   500
        """return a path to an external resource, using its identifier
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   501
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   502
        raise KeyError  if the resource is not defined
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   503
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   504
        try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   505
            value = self.vreg.config.ext_resources[rid]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   506
        except KeyError:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   507
            if default is _MARKER:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   508
                raise
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   509
            return default
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   510
        if value is None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   511
            return None
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   512
        baseurl = self.datadir_url[:-1] # remove trailing /
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   513
        if isinstance(value, list):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   514
            return [v.replace('DATADIR', baseurl) for v in value]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   515
        return value.replace('DATADIR', baseurl)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   516
    external_resource = cached(external_resource, keyarg=1)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   517
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   518
    def validate_cache(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   519
        """raise a `DirectResponse` exception if a cached page along the way
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   520
        exists and is still usable.
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   521
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   522
        calls the client-dependant implementation of `_validate_cache`
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   523
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   524
        self._validate_cache()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   525
        if self.http_method() == 'HEAD':
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   526
            raise StatusResponse(200, '')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   527
        
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   528
    # abstract methods to override according to the web front-end #############
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   529
        
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   530
    def http_method(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   531
        """returns 'POST', 'GET', 'HEAD', etc."""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   532
        raise NotImplementedError()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   533
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   534
    def _validate_cache(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   535
        """raise a `DirectResponse` exception if a cached page along the way
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   536
        exists and is still usable
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   537
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   538
        raise NotImplementedError()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   539
        
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   540
    def relative_path(self, includeparams=True):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   541
        """return the normalized path of the request (ie at least relative
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   542
        to the application's root, but some other normalization may be needed
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   543
        so that the returned path may be used to compare to generated urls
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   544
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   545
        :param includeparams:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   546
           boolean indicating if GET form parameters should be kept in the path
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   547
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   548
        raise NotImplementedError()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   549
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   550
    def get_header(self, header, default=None):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   551
        """return the value associated with the given input HTTP header,
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   552
        raise KeyError if the header is not set
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   553
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   554
        raise NotImplementedError()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   555
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   556
    def set_header(self, header, value):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   557
        """set an output HTTP header"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   558
        raise NotImplementedError()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   559
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   560
    def add_header(self, header, value):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   561
        """add an output HTTP header"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   562
        raise NotImplementedError()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   563
    
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   564
    def remove_header(self, header):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   565
        """remove an output HTTP header"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   566
        raise NotImplementedError()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   567
        
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   568
    def header_authorization(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   569
        """returns a couple (auth-type, auth-value)"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   570
        auth = self.get_header("Authorization", None)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   571
        if auth:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   572
            scheme, rest = auth.split(' ', 1)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   573
            scheme = scheme.lower()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   574
            try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   575
                assert scheme == "basic"
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   576
                user, passwd = base64.decodestring(rest).split(":", 1)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   577
                # XXX HTTP header encoding: use email.Header?
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   578
                return user.decode('UTF8'), passwd
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   579
            except Exception, ex:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   580
                self.debug('bad authorization %s (%s: %s)',
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   581
                           auth, ex.__class__.__name__, ex)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   582
        return None, None
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   583
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   584
    def header_accept_language(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   585
        """returns an ordered list of preferred languages"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   586
        acceptedlangs = self.get_header('Accept-Language', '')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   587
        langs = []
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   588
        for langinfo in acceptedlangs.split(','):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   589
            try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   590
                lang, score = langinfo.split(';')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   591
                score = float(score[2:]) # remove 'q='
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   592
            except ValueError:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   593
                lang = langinfo
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   594
                score = 1.0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   595
            lang = lang.split('-')[0]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   596
            langs.append( (score, lang) )
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   597
        langs.sort(reverse=True)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   598
        return (lang for (score, lang) in langs)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   599
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   600
    def header_if_modified_since(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   601
        """If the HTTP header If-modified-since is set, return the equivalent
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   602
        mx date time value (GMT), else return None
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   603
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   604
        raise NotImplementedError()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   605
    
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   606
    # page data management ####################################################
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   607
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   608
    def get_page_data(self, key, default=None):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   609
        """return value associated to `key` in curernt page data"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   610
        page_data = self.cnx.get_session_data(self.pageid, {})
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   611
        return page_data.get(key, default)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   612
        
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   613
    def set_page_data(self, key, value):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   614
        """set value associated to `key` in current page data"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   615
        self.html_headers.add_unload_pagedata()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   616
        page_data = self.cnx.get_session_data(self.pageid, {})
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   617
        page_data[key] = value
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   618
        return self.cnx.set_session_data(self.pageid, page_data)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   619
        
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   620
    def del_page_data(self, key=None):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   621
        """remove value associated to `key` in current page data
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   622
        if `key` is None, all page data will be cleared
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   623
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   624
        if key is None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   625
            self.cnx.del_session_data(self.pageid)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   626
        else:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   627
            page_data = self.cnx.get_session_data(self.pageid, {})
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   628
            page_data.pop(key, None)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   629
            self.cnx.set_session_data(self.pageid, page_data)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   630
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   631
    # user-agent detection ####################################################
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   632
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   633
    @cached
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   634
    def useragent(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   635
        return self.get_header('User-Agent', None)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   636
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   637
    def ie_browser(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   638
        useragent = self.useragent()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   639
        return useragent and 'MSIE' in useragent
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   640
    
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   641
    def xhtml_browser(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   642
        useragent = self.useragent()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   643
        if useragent and ('MSIE' in useragent or 'KHTML' in useragent):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   644
            return False
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   645
        return True
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   646
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   647
from cubicweb import set_log_methods
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   648
set_log_methods(CubicWebRequestBase, LOGGER)