680 lines
24 KiB
Python
680 lines
24 KiB
Python
# -*- encoding: utf-8 -*-
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############################################################################9
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#
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# Copyright P. Christeas <p_christ@hol.gr> 2008-2010
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# Copyright OpenERP SA, 2010 (http://www.openerp.com )
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#
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# Disclaimer: Many of the functions below borrow code from the
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# python-webdav library (http://code.google.com/p/pywebdav/ ),
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# which they import and override to suit OpenERP functionality.
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# python-webdav was written by: Simon Pamies <s.pamies@banality.de>
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# Christian Scholz <mrtopf@webdav.de>
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# Vince Spicer <vince@vince.ca>
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#
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# WARNING: This program as such is intended to be used by professional
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# programmers who take the whole responsability of assessing all potential
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# consequences resulting from its eventual inadequacies and bugs
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# End users who are looking for a ready-to-use solution with commercial
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# garantees and support are strongly adviced to contract a Free Software
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# Service Company
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#
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# This program is Free Software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 3
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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###############################################################################
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import logging
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from openerp import netsvc
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from dav_fs import openerp_dav_handler
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from openerp.tools.config import config
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try:
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from pywebdav.lib.WebDAVServer import DAVRequestHandler
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from pywebdav.lib.utils import IfParser, TagList
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from pywebdav.lib.errors import DAV_Error, DAV_Forbidden, DAV_NotFound
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from pywebdav.lib.propfind import PROPFIND
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except ImportError:
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from DAV.WebDAVServer import DAVRequestHandler
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from DAV.utils import IfParser, TagList
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from DAV.errors import DAV_Error, DAV_Forbidden, DAV_NotFound
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from DAV.propfind import PROPFIND
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from openerp.service import http_server
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from openerp.service.websrv_lib import FixSendError, HttpOptions
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from BaseHTTPServer import BaseHTTPRequestHandler
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import urlparse
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import urllib
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import re
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import time
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from string import atoi
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import addons
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import socket
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# from DAV.constants import DAV_VERSION_1, DAV_VERSION_2
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from xml.dom import minidom
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from redirect import RedirectHTTPHandler
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_logger = logging.getLogger(__name__)
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khtml_re = re.compile(r' KHTML/([0-9\.]+) ')
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def OpenDAVConfig(**kw):
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class OpenDAV:
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def __init__(self, **kw):
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self.__dict__.update(**kw)
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def getboolean(self, word):
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return self.__dict__.get(word, False)
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class Config:
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DAV = OpenDAV(**kw)
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return Config()
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class DAVHandler(DAVRequestHandler, HttpOptions, FixSendError):
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verbose = False
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protocol_version = 'HTTP/1.1'
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_HTTP_OPTIONS= { 'DAV' : ['1', '2'],
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'Allow' : [ 'GET', 'HEAD', 'COPY', 'MOVE', 'POST', 'PUT',
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'PROPFIND', 'PROPPATCH', 'OPTIONS', 'MKCOL',
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'DELETE', 'TRACE', 'REPORT', ]
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}
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def __init__(self, request, client_address, server):
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self.request = request
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self.client_address = client_address
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self.server = server
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self.setup()
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if hasattr(self, '_init_buffer'):
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self._init_buffer()
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def get_userinfo(self, user, pw):
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return False
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def _log(self, message):
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self._logger.debug(message)
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def handle(self):
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"""Handle multiple requests if necessary."""
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self.close_connection = 1
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try:
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self.handle_one_request()
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while not self.close_connection:
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self.handle_one_request()
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except Exception as e:
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try:
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self.log_error("Request timed out: %r \n Trying old version of HTTPServer", e)
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self._init_buffer()
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except Exception as e:
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#a read or a write timed out. Discard this connection
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self.log_error("Not working neither, closing connection\n %r", e)
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self.close_connection = 1
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def finish(self):
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pass
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def get_db_from_path(self, uri):
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# interface class will handle all cases.
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res = self.IFACE_CLASS.get_db(uri, allow_last=True)
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return res
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def setup(self):
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self.davpath = '/'+config.get_misc('webdav','vdir','webdav')
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addr, port = self.server.server_name, self.server.server_port
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server_proto = getattr(self.server,'proto', 'http').lower()
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# Too early here to use self.headers
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self.baseuri = "%s://%s:%d/"% (server_proto, addr, port)
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self.IFACE_CLASS = openerp_dav_handler(self, self.verbose)
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def copymove(self, CLASS):
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""" Our uri scheme removes the /webdav/ component from there, so we
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need to mangle the header, too.
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"""
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up = urlparse.urlparse(urllib.unquote(self.headers['Destination']))
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if up.path.startswith(self.davpath):
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self.headers['Destination'] = up.path[len(self.davpath):]
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else:
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raise DAV_Forbidden("Not allowed to copy/move outside webdav path.")
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# TODO: locks
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DAVRequestHandler.copymove(self, CLASS)
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def get_davpath(self):
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return self.davpath
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def log_message(self, format, *args):
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_logger.debug(format % args)
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def log_error(self, format, *args):
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_logger.warning(format % args)
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def _prep_OPTIONS(self, opts):
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ret = opts
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dc=self.IFACE_CLASS
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uri=urlparse.urljoin(self.get_baseuri(dc), self.path)
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uri=urllib.unquote(uri)
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try:
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ret = dc.prep_http_options(uri, opts)
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except DAV_Error, (ec,dd):
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pass
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except Exception,e:
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self.log_error("Error at options: %s", str(e))
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raise
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return ret
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def send_response(self, code, message=None):
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# the BufferingHttpServer will send Connection: close , while
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# the BaseHTTPRequestHandler will only accept int code.
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# workaround both of them.
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if self.command == 'PROPFIND' and int(code) == 404:
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kh = khtml_re.search(self.headers.get('User-Agent',''))
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if kh and (kh.group(1) < '4.5'):
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# There is an ugly bug in all khtml < 4.5.x, where the 404
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# response is treated as an immediate error, which would even
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# break the flow of a subsequent PUT request. At the same time,
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# the 200 response (rather than 207 with content) is treated
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# as "path not exist", so we send this instead
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# https://bugs.kde.org/show_bug.cgi?id=166081
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code = 200
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BaseHTTPRequestHandler.send_response(self, int(code), message)
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def send_header(self, key, value):
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if key == 'Connection' and value == 'close':
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self.close_connection = 1
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DAVRequestHandler.send_header(self, key, value)
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def send_body(self, DATA, code=None, msg=None, desc=None, ctype='application/octet-stream', headers=None):
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if headers and 'Connection' in headers:
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pass
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elif self.request_version in ('HTTP/1.0', 'HTTP/0.9'):
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pass
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elif self.close_connection == 1: # close header already sent
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pass
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elif headers and self.headers.get('Connection',False) == 'Keep-Alive':
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headers['Connection'] = 'keep-alive'
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if headers is None:
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headers = {}
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DAVRequestHandler.send_body(self, DATA, code=code, msg=msg, desc=desc,
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ctype=ctype, headers=headers)
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def do_PUT(self):
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dc=self.IFACE_CLASS
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uri=urlparse.urljoin(self.get_baseuri(dc), self.path)
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uri=urllib.unquote(uri)
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# Handle If-Match
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if self.headers.has_key('If-Match'):
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test = False
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etag = None
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for match in self.headers['If-Match'].split(','):
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if match == '*':
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if dc.exists(uri):
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test = True
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break
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else:
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if dc.match_prop(uri, match, "DAV:", "getetag"):
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test = True
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break
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if not test:
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self._get_body()
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self.send_status(412)
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return
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# Handle If-None-Match
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if self.headers.has_key('If-None-Match'):
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test = True
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etag = None
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for match in self.headers['If-None-Match'].split(','):
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if match == '*':
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if dc.exists(uri):
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test = False
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break
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else:
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if dc.match_prop(uri, match, "DAV:", "getetag"):
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test = False
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break
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if not test:
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self._get_body()
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self.send_status(412)
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return
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# Handle expect
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expect = self.headers.get('Expect', '')
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if (expect.lower() == '100-continue' and
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self.protocol_version >= 'HTTP/1.1' and
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self.request_version >= 'HTTP/1.1'):
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self.send_status(100)
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self._flush()
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# read the body
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body=self._get_body()
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# locked resources are not allowed to be overwritten
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if self._l_isLocked(uri):
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return self.send_body(None, '423', 'Locked', 'Locked')
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ct=None
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if self.headers.has_key("Content-Type"):
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ct=self.headers['Content-Type']
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try:
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location = dc.put(uri, body, ct)
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except DAV_Error, (ec,dd):
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self.log_error("Cannot PUT to %s: %s", uri, dd)
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return self.send_status(ec)
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headers = {}
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etag = None
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if location and isinstance(location, tuple):
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etag = location[1]
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location = location[0]
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# note that we have allowed for > 2 elems
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if location:
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headers['Location'] = location
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else:
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try:
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if not etag:
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etag = dc.get_prop(location or uri, "DAV:", "getetag")
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if etag:
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headers['ETag'] = str(etag)
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except Exception:
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pass
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self.send_body(None, '201', 'Created', '', headers=headers)
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def _get_body(self):
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body = None
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if self.headers.has_key("Content-Length"):
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l=self.headers['Content-Length']
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body=self.rfile.read(atoi(l))
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return body
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def do_DELETE(self):
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try:
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DAVRequestHandler.do_DELETE(self)
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except DAV_Error, (ec, dd):
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return self.send_status(ec)
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def do_UNLOCK(self):
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""" Unlocks given resource """
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dc = self.IFACE_CLASS
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self.log_message('UNLOCKing resource %s' % self.headers)
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uri = urlparse.urljoin(self.get_baseuri(dc), self.path)
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uri = urllib.unquote(uri)
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token = self.headers.get('Lock-Token', False)
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if token:
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token = token.strip()
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if token[0] == '<' and token[-1] == '>':
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token = token[1:-1]
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else:
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token = False
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if not token:
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return self.send_status(400, 'Bad lock token')
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try:
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res = dc.unlock(uri, token)
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except DAV_Error, (ec, dd):
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return self.send_status(ec, dd)
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if res == True:
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self.send_body(None, '204', 'OK', 'Resource unlocked.')
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else:
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# We just differentiate the description, for debugging purposes
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self.send_body(None, '204', 'OK', 'Resource not locked.')
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def do_LOCK(self):
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""" Attempt to place a lock on the given resource.
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"""
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dc = self.IFACE_CLASS
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lock_data = {}
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self.log_message('LOCKing resource %s' % self.headers)
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body = None
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if self.headers.has_key('Content-Length'):
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l = self.headers['Content-Length']
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body = self.rfile.read(atoi(l))
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depth = self.headers.get('Depth', 'infinity')
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uri = urlparse.urljoin(self.get_baseuri(dc), self.path)
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uri = urllib.unquote(uri)
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self.log_message('do_LOCK: uri = %s' % uri)
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ifheader = self.headers.get('If')
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if ifheader:
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ldif = IfParser(ifheader)
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if isinstance(ldif, list):
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if len(ldif) !=1 or (not isinstance(ldif[0], TagList)) \
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or len(ldif[0].list) != 1:
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raise DAV_Error(400, "Cannot accept multiple tokens.")
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ldif = ldif[0].list[0]
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if ldif[0] == '<' and ldif[-1] == '>':
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ldif = ldif[1:-1]
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lock_data['token'] = ldif
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if not body:
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lock_data['refresh'] = True
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else:
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lock_data['refresh'] = False
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lock_data.update(self._lock_unlock_parse(body))
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if lock_data['refresh'] and not lock_data.get('token', False):
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raise DAV_Error(400, 'Lock refresh must specify token.')
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lock_data['depth'] = depth
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try:
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created, data, lock_token = dc.lock(uri, lock_data)
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except DAV_Error, (ec, dd):
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return self.send_status(ec, dd)
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headers = {}
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if not lock_data['refresh']:
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headers['Lock-Token'] = '<%s>' % lock_token
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if created:
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self.send_body(data, '201', 'Created', ctype='text/xml', headers=headers)
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else:
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self.send_body(data, '200', 'OK', ctype='text/xml', headers=headers)
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def _lock_unlock_parse(self, body):
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# Override the python-webdav function, with some improvements
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# Unlike the py-webdav one, we also parse the owner minidom elements into
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# pure pythonic struct.
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doc = minidom.parseString(body)
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data = {}
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owners = []
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for info in doc.getElementsByTagNameNS('DAV:', 'lockinfo'):
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for scope in info.getElementsByTagNameNS('DAV:', 'lockscope'):
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for scc in scope.childNodes:
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if scc.nodeType == info.ELEMENT_NODE \
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and scc.namespaceURI == 'DAV:':
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data['lockscope'] = scc.localName
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break
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for ltype in info.getElementsByTagNameNS('DAV:', 'locktype'):
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for ltc in ltype.childNodes:
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if ltc.nodeType == info.ELEMENT_NODE \
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and ltc.namespaceURI == 'DAV:':
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data['locktype'] = ltc.localName
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break
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for own in info.getElementsByTagNameNS('DAV:', 'owner'):
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for ono in own.childNodes:
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if ono.nodeType == info.TEXT_NODE:
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if ono.data:
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owners.append(ono.data)
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elif ono.nodeType == info.ELEMENT_NODE \
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and ono.namespaceURI == 'DAV:' \
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and ono.localName == 'href':
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href = ''
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for hno in ono.childNodes:
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if hno.nodeType == info.TEXT_NODE:
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href += hno.data
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owners.append(('href','DAV:', href))
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if len(owners) == 1:
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data['lockowner'] = owners[0]
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elif not owners:
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pass
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else:
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data['lockowner'] = owners
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return data
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from openerp.service.http_server import reg_http_service,OpenERPAuthProvider
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class DAVAuthProvider(OpenERPAuthProvider):
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def authenticate(self, db, user, passwd, client_address):
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""" authenticate, but also allow the False db, meaning to skip
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authentication when no db is specified.
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"""
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if db is False:
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return True
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return OpenERPAuthProvider.authenticate(self, db, user, passwd, client_address)
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class dummy_dav_interface(object):
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""" Dummy dav interface """
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verbose = True
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PROPS={"DAV:" : ('creationdate',
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'displayname',
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'getlastmodified',
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'resourcetype',
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),
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}
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M_NS={"DAV:" : "_get_dav", }
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def __init__(self, parent):
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self.parent = parent
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def get_propnames(self, uri):
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return self.PROPS
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def get_prop(self, uri, ns, propname):
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if self.M_NS.has_key(ns):
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prefix=self.M_NS[ns]
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else:
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raise DAV_NotFound
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mname=prefix+"_"+propname.replace('-', '_')
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try:
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m=getattr(self,mname)
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r=m(uri)
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return r
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except AttributeError:
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raise DAV_NotFound
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def get_data(self, uri, range=None):
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raise DAV_NotFound
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def _get_dav_creationdate(self, uri):
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return time.strftime("%Y-%m-%dT%H:%M:%SZ", time.gmtime())
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def _get_dav_getlastmodified(self, uri):
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return time.strftime("%a, %d %b %Y %H:%M:%S GMT", time.gmtime())
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def _get_dav_displayname(self, uri):
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return uri
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def _get_dav_resourcetype(self, uri):
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return ('collection', 'DAV:')
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def exists(self, uri):
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""" return 1 or None depending on if a resource exists """
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uri2 = uri.split('/')
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if len(uri2) < 3:
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return True
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_logger.debug("Requested uri: %s", uri)
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return None # no
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def is_collection(self, uri):
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""" return 1 or None depending on if a resource is a collection """
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return None # no
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class DAVStaticHandler(http_server.StaticHTTPHandler):
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""" A variant of the Static handler, which will serve dummy DAV requests
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"""
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verbose = False
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protocol_version = 'HTTP/1.1'
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|
_HTTP_OPTIONS= { 'DAV' : ['1', '2'],
|
|
'Allow' : [ 'GET', 'HEAD',
|
|
'PROPFIND', 'OPTIONS', 'REPORT', ]
|
|
}
|
|
|
|
def send_body(self, content, code, message='OK', content_type='text/xml'):
|
|
self.send_response(int(code), message)
|
|
self.send_header("Content-Type", content_type)
|
|
# self.send_header('Connection', 'close')
|
|
self.send_header('Content-Length', len(content) or 0)
|
|
self.end_headers()
|
|
if hasattr(self, '_flush'):
|
|
self._flush()
|
|
|
|
if self.command != 'HEAD':
|
|
self.wfile.write(content)
|
|
|
|
def do_PROPFIND(self):
|
|
"""Answer to PROPFIND with generic data.
|
|
|
|
A rough copy of python-webdav's do_PROPFIND, but hacked to work
|
|
statically.
|
|
"""
|
|
|
|
dc = dummy_dav_interface(self)
|
|
|
|
# read the body containing the xml request
|
|
# iff there is no body then this is an ALLPROP request
|
|
body = None
|
|
if self.headers.has_key('Content-Length'):
|
|
l = self.headers['Content-Length']
|
|
body = self.rfile.read(atoi(l))
|
|
|
|
path = self.path.rstrip('/')
|
|
uri = urllib.unquote(path)
|
|
|
|
pf = PROPFIND(uri, dc, self.headers.get('Depth', 'infinity'), body)
|
|
|
|
try:
|
|
DATA = '%s\n' % pf.createResponse()
|
|
except DAV_Error, (ec,dd):
|
|
return self.send_error(ec,dd)
|
|
except Exception:
|
|
self.log_exception("Cannot PROPFIND")
|
|
raise
|
|
|
|
# work around MSIE DAV bug for creation and modified date
|
|
# taken from Resource.py @ Zope webdav
|
|
if (self.headers.get('User-Agent') ==
|
|
'Microsoft Data Access Internet Publishing Provider DAV 1.1'):
|
|
DATA = DATA.replace('<ns0:getlastmodified xmlns:ns0="DAV:">',
|
|
'<ns0:getlastmodified xmlns:n="DAV:" xmlns:b="urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882/" b:dt="dateTime.rfc1123">')
|
|
DATA = DATA.replace('<ns0:creationdate xmlns:ns0="DAV:">',
|
|
'<ns0:creationdate xmlns:n="DAV:" xmlns:b="urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882/" b:dt="dateTime.tz">')
|
|
|
|
self.send_body(DATA, '207','Multi-Status','Multiple responses')
|
|
|
|
def not_get_baseuri(self):
|
|
baseuri = '/'
|
|
if self.headers.has_key('Host'):
|
|
uparts = list(urlparse.urlparse('/'))
|
|
uparts[1] = self.headers['Host']
|
|
baseuri = urlparse.urlunparse(uparts)
|
|
return baseuri
|
|
|
|
def get_davpath(self):
|
|
return ''
|
|
|
|
|
|
try:
|
|
|
|
if (config.get_misc('webdav','enable',True)):
|
|
directory = '/'+config.get_misc('webdav','vdir','webdav')
|
|
handler = DAVHandler
|
|
verbose = config.get_misc('webdav','verbose',True)
|
|
handler.debug = config.get_misc('webdav','debug',True)
|
|
_dc = { 'verbose' : verbose,
|
|
'directory' : directory,
|
|
'lockemulation' : True,
|
|
}
|
|
|
|
conf = OpenDAVConfig(**_dc)
|
|
handler._config = conf
|
|
reg_http_service(directory, DAVHandler, DAVAuthProvider)
|
|
_logger.info("WebDAV service registered at path: %s/ "% directory)
|
|
|
|
if not (config.get_misc('webdav', 'no_root_hack', False)):
|
|
# Now, replace the static http handler with the dav-enabled one.
|
|
# If a static-http service has been specified for our server, then
|
|
# read its configuration and use that dir_path.
|
|
# NOTE: this will _break_ any other service that would be registered
|
|
# at the root path in future.
|
|
base_path = False
|
|
if config.get_misc('static-http','enable', False):
|
|
base_path = config.get_misc('static-http', 'base_path', '/')
|
|
if base_path and base_path == '/':
|
|
dir_path = config.get_misc('static-http', 'dir_path', False)
|
|
else:
|
|
dir_path = addons.get_module_resource('document_webdav','public_html')
|
|
# an _ugly_ hack: we put that dir back in tools.config.misc, so that
|
|
# the StaticHttpHandler can find its dir_path.
|
|
config.misc.setdefault('static-http',{})['dir_path'] = dir_path
|
|
|
|
reg_http_service('/', DAVStaticHandler)
|
|
|
|
except Exception, e:
|
|
_logger.error('Cannot launch webdav: %s' % e)
|
|
|
|
|
|
def init_well_known():
|
|
reps = RedirectHTTPHandler.redirect_paths
|
|
|
|
num_svcs = config.get_misc('http-well-known', 'num_services', '0')
|
|
|
|
for nsv in range(1, int(num_svcs)+1):
|
|
uri = config.get_misc('http-well-known', 'service_%d' % nsv, False)
|
|
path = config.get_misc('http-well-known', 'path_%d' % nsv, False)
|
|
if not (uri and path):
|
|
continue
|
|
reps['/'+uri] = path
|
|
|
|
if int(num_svcs):
|
|
reg_http_service('/.well-known', RedirectHTTPHandler)
|
|
|
|
init_well_known()
|
|
|
|
class PrincipalsRedirect(RedirectHTTPHandler):
|
|
|
|
|
|
redirect_paths = {}
|
|
|
|
def _find_redirect(self):
|
|
for b, r in self.redirect_paths.items():
|
|
if self.path.startswith(b):
|
|
return r + self.path[len(b):]
|
|
return False
|
|
|
|
def init_principals_redirect():
|
|
""" Some devices like the iPhone will look under /principals/users/xxx for
|
|
the user's properties. In OpenERP we _cannot_ have a stray /principals/...
|
|
working path, since we have a database path and the /webdav/ component. So,
|
|
the best solution is to redirect the url with 301. Luckily, it does work in
|
|
the device. The trick is that we need to hard-code the database to use, either
|
|
the one centrally defined in the config, or a "forced" one in the webdav
|
|
section.
|
|
"""
|
|
dbname = config.get_misc('webdav', 'principal_dbname', False)
|
|
if (not dbname) and not config.get_misc('webdav', 'no_principals_redirect', False):
|
|
dbname = config.get('db_name', False)
|
|
if dbname:
|
|
PrincipalsRedirect.redirect_paths[''] = '/webdav/%s/principals' % dbname
|
|
reg_http_service('/principals', PrincipalsRedirect)
|
|
_logger.info(
|
|
"Registered HTTP redirect handler for /principals to the %s db.",
|
|
dbname)
|
|
|
|
init_principals_redirect()
|
|
|
|
#eof
|
|
|
|
|
|
|
|
|
|
# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
|