950 lines
39 KiB
Python
950 lines
39 KiB
Python
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# This file is part of Radicale Server - Calendar Server
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# Copyright © 2008 Nicolas Kandel
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# Copyright © 2008 Pascal Halter
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# Copyright © 2008-2017 Guillaume Ayoub
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#
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# This library is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This library 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 Radicale. If not, see <http://www.gnu.org/licenses/>.
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"""
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Radicale Server module.
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This module offers a WSGI application class.
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To use this module, you should take a look at the file ``radicale.py`` that
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should have been included in this package.
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"""
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import base64
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import contextlib
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import datetime
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import io
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import itertools
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import logging
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import os
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import posixpath
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import pprint
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import random
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import socket
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import socketserver
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import ssl
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import sys
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import threading
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import time
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import wsgiref.simple_server
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import zlib
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from http import client
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from urllib.parse import unquote, urlparse
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from xml.etree import ElementTree as ET
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import vobject
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from . import auth, rights, storage, web, xmlutils
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VERSION = "2.1.8"
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NOT_ALLOWED = (
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client.FORBIDDEN, (("Content-Type", "text/plain"),),
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"Access to the requested resource forbidden.")
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BAD_REQUEST = (
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client.BAD_REQUEST, (("Content-Type", "text/plain"),), "Bad Request")
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NOT_FOUND = (
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client.NOT_FOUND, (("Content-Type", "text/plain"),),
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"The requested resource could not be found.")
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WEBDAV_PRECONDITION_FAILED = (
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client.CONFLICT, (("Content-Type", "text/plain"),),
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"WebDAV precondition failed.")
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PRECONDITION_FAILED = (
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client.PRECONDITION_FAILED,
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(("Content-Type", "text/plain"),), "Precondition failed.")
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REQUEST_TIMEOUT = (
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client.REQUEST_TIMEOUT, (("Content-Type", "text/plain"),),
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"Connection timed out.")
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REQUEST_ENTITY_TOO_LARGE = (
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client.REQUEST_ENTITY_TOO_LARGE, (("Content-Type", "text/plain"),),
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"Request body too large.")
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REMOTE_DESTINATION = (
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client.BAD_GATEWAY, (("Content-Type", "text/plain"),),
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"Remote destination not supported.")
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DIRECTORY_LISTING = (
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client.FORBIDDEN, (("Content-Type", "text/plain"),),
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"Directory listings are not supported.")
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INTERNAL_SERVER_ERROR = (
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client.INTERNAL_SERVER_ERROR, (("Content-Type", "text/plain"),),
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"A server error occurred. Please contact the administrator.")
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DAV_HEADERS = "1, 2, 3, calendar-access, addressbook, extended-mkcol"
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class HTTPServer(wsgiref.simple_server.WSGIServer):
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"""HTTP server."""
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# These class attributes must be set before creating instance
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client_timeout = None
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max_connections = None
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logger = None
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def __init__(self, address, handler, bind_and_activate=True):
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"""Create server."""
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ipv6 = ":" in address[0]
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if ipv6:
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self.address_family = socket.AF_INET6
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# Do not bind and activate, as we might change socket options
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super().__init__(address, handler, False)
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if ipv6:
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# Only allow IPv6 connections to the IPv6 socket
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self.socket.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, 1)
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if self.max_connections:
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self.connections_guard = threading.BoundedSemaphore(
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self.max_connections)
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else:
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# use dummy context manager
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self.connections_guard = contextlib.ExitStack()
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if bind_and_activate:
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try:
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self.server_bind()
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self.server_activate()
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except BaseException:
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self.server_close()
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raise
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if self.client_timeout and sys.version_info < (3, 5, 2):
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self.logger.warning("Using server.timeout with Python < 3.5.2 "
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"can cause network connection failures")
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def get_request(self):
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# Set timeout for client
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_socket, address = super().get_request()
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if self.client_timeout:
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_socket.settimeout(self.client_timeout)
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return _socket, address
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def handle_error(self, request, client_address):
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if issubclass(sys.exc_info()[0], socket.timeout):
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self.logger.info("client timed out", exc_info=True)
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else:
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self.logger.error("An exception occurred during request: %s",
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sys.exc_info()[1], exc_info=True)
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class HTTPSServer(HTTPServer):
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"""HTTPS server."""
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# These class attributes must be set before creating instance
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certificate = None
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key = None
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protocol = None
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ciphers = None
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certificate_authority = None
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def __init__(self, address, handler):
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"""Create server by wrapping HTTP socket in an SSL socket."""
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super().__init__(address, handler, bind_and_activate=False)
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self.socket = ssl.wrap_socket(
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self.socket, self.key, self.certificate, server_side=True,
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cert_reqs=ssl.CERT_REQUIRED if self.certificate_authority else
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ssl.CERT_NONE,
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ca_certs=self.certificate_authority or None,
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ssl_version=self.protocol, ciphers=self.ciphers,
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do_handshake_on_connect=False)
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self.server_bind()
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self.server_activate()
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class ThreadedHTTPServer(socketserver.ThreadingMixIn, HTTPServer):
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def process_request_thread(self, request, client_address):
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with self.connections_guard:
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return super().process_request_thread(request, client_address)
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class ThreadedHTTPSServer(socketserver.ThreadingMixIn, HTTPSServer):
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def process_request_thread(self, request, client_address):
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try:
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try:
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request.do_handshake()
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except socket.timeout:
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raise
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except Exception as e:
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raise RuntimeError("SSL handshake failed: %s" % e) from e
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except Exception:
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try:
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self.handle_error(request, client_address)
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finally:
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self.shutdown_request(request)
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return
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with self.connections_guard:
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return super().process_request_thread(request, client_address)
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class RequestHandler(wsgiref.simple_server.WSGIRequestHandler):
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"""HTTP requests handler."""
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# These class attributes must be set before creating instance
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logger = None
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def __init__(self, *args, **kwargs):
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# Store exception for logging
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self.error_stream = io.StringIO()
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super().__init__(*args, **kwargs)
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def get_stderr(self):
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return self.error_stream
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def log_message(self, *args, **kwargs):
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"""Disable inner logging management."""
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def get_environ(self):
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env = super().get_environ()
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if hasattr(self.connection, "getpeercert"):
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# The certificate can be evaluated by the auth module
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env["REMOTE_CERTIFICATE"] = self.connection.getpeercert()
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# Parent class only tries latin1 encoding
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env["PATH_INFO"] = unquote(self.path.split("?", 1)[0])
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return env
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def handle(self):
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super().handle()
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# Log exception
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error = self.error_stream.getvalue().strip("\n")
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if error:
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self.logger.error(
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"An unhandled exception occurred during request:\n%s" % error)
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class Application:
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"""WSGI application managing collections."""
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def __init__(self, configuration, logger):
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"""Initialize application."""
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super().__init__()
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self.configuration = configuration
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self.logger = logger
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self.Auth = auth.load(configuration, logger)
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self.Collection = storage.load(configuration, logger)
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self.Rights = rights.load(configuration, logger)
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self.Web = web.load(configuration, logger)
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self.encoding = configuration.get("encoding", "request")
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def headers_log(self, environ):
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"""Sanitize headers for logging."""
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request_environ = dict(environ)
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# Remove environment variables
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if not self.configuration.getboolean("logging", "full_environment"):
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for shell_variable in os.environ:
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request_environ.pop(shell_variable, None)
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# Mask passwords
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mask_passwords = self.configuration.getboolean(
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"logging", "mask_passwords")
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authorization = request_environ.get("HTTP_AUTHORIZATION", "")
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if mask_passwords and authorization.startswith("Basic"):
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request_environ["HTTP_AUTHORIZATION"] = "Basic **masked**"
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if request_environ.get("HTTP_COOKIE"):
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request_environ["HTTP_COOKIE"] = "**masked**"
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return request_environ
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def decode(self, text, environ):
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"""Try to magically decode ``text`` according to given ``environ``."""
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# List of charsets to try
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charsets = []
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# First append content charset given in the request
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content_type = environ.get("CONTENT_TYPE")
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if content_type and "charset=" in content_type:
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charsets.append(
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content_type.split("charset=")[1].split(";")[0].strip())
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# Then append default Radicale charset
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charsets.append(self.encoding)
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# Then append various fallbacks
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charsets.append("utf-8")
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charsets.append("iso8859-1")
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# Try to decode
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for charset in charsets:
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try:
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return text.decode(charset)
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except UnicodeDecodeError:
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pass
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raise UnicodeDecodeError
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def collect_allowed_items(self, items, user):
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"""Get items from request that user is allowed to access."""
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read_allowed_items = []
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write_allowed_items = []
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for item in items:
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if isinstance(item, storage.BaseCollection):
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path = storage.sanitize_path("/%s/" % item.path)
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can_read = self.Rights.authorized(user, path, "r")
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can_write = self.Rights.authorized(user, path, "w")
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target = "collection %r" % item.path
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else:
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path = storage.sanitize_path("/%s/%s" % (item.collection.path,
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item.href))
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can_read = self.Rights.authorized_item(user, path, "r")
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can_write = self.Rights.authorized_item(user, path, "w")
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target = "item %r from %r" % (item.href, item.collection.path)
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text_status = []
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if can_read:
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text_status.append("read")
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read_allowed_items.append(item)
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if can_write:
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text_status.append("write")
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write_allowed_items.append(item)
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self.logger.debug(
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"%s has %s access to %s",
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repr(user) if user else "anonymous user",
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" and ".join(text_status) if text_status else "NO", target)
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return read_allowed_items, write_allowed_items
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def __call__(self, environ, start_response):
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try:
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status, headers, answers = self._handle_request(environ)
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except Exception as e:
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try:
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method = str(environ["REQUEST_METHOD"])
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except Exception:
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method = "unknown"
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try:
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path = str(environ.get("PATH_INFO", ""))
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except Exception:
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path = ""
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self.logger.error("An exception occurred during %s request on %r: "
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"%s", method, path, e, exc_info=True)
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status, headers, answer = INTERNAL_SERVER_ERROR
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answer = answer.encode("ascii")
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status = "%d %s" % (
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status, client.responses.get(status, "Unknown"))
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headers = [("Content-Length", str(len(answer)))] + list(headers)
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answers = [answer]
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start_response(status, headers)
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return answers
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def _handle_request(self, environ):
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"""Manage a request."""
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def response(status, headers=(), answer=None):
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headers = dict(headers)
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# Set content length
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if answer:
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if hasattr(answer, "encode"):
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self.logger.debug("Response content:\n%s", answer)
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headers["Content-Type"] += "; charset=%s" % self.encoding
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answer = answer.encode(self.encoding)
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accept_encoding = [
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encoding.strip() for encoding in
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environ.get("HTTP_ACCEPT_ENCODING", "").split(",")
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if encoding.strip()]
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if "gzip" in accept_encoding:
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zcomp = zlib.compressobj(wbits=16 + zlib.MAX_WBITS)
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answer = zcomp.compress(answer) + zcomp.flush()
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headers["Content-Encoding"] = "gzip"
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headers["Content-Length"] = str(len(answer))
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# Add extra headers set in configuration
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if self.configuration.has_section("headers"):
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for key in self.configuration.options("headers"):
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headers[key] = self.configuration.get("headers", key)
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# Start response
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time_end = datetime.datetime.now()
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status = "%d %s" % (
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status, client.responses.get(status, "Unknown"))
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self.logger.info(
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"%s response status for %r%s in %.3f seconds: %s",
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|
|
environ["REQUEST_METHOD"], environ.get("PATH_INFO", ""),
|
||
|
|
depthinfo, (time_end - time_begin).total_seconds(), status)
|
||
|
|
# Return response content
|
||
|
|
return status, list(headers.items()), [answer] if answer else []
|
||
|
|
|
||
|
|
remote_host = "unknown"
|
||
|
|
if environ.get("REMOTE_HOST"):
|
||
|
|
remote_host = repr(environ["REMOTE_HOST"])
|
||
|
|
elif environ.get("REMOTE_ADDR"):
|
||
|
|
remote_host = environ["REMOTE_ADDR"]
|
||
|
|
if environ.get("HTTP_X_FORWARDED_FOR"):
|
||
|
|
remote_host = "%r (forwarded by %s)" % (
|
||
|
|
environ["HTTP_X_FORWARDED_FOR"], remote_host)
|
||
|
|
remote_useragent = ""
|
||
|
|
if environ.get("HTTP_USER_AGENT"):
|
||
|
|
remote_useragent = " using %r" % environ["HTTP_USER_AGENT"]
|
||
|
|
depthinfo = ""
|
||
|
|
if environ.get("HTTP_DEPTH"):
|
||
|
|
depthinfo = " with depth %r" % environ["HTTP_DEPTH"]
|
||
|
|
time_begin = datetime.datetime.now()
|
||
|
|
self.logger.info(
|
||
|
|
"%s request for %r%s received from %s%s",
|
||
|
|
environ["REQUEST_METHOD"], environ.get("PATH_INFO", ""), depthinfo,
|
||
|
|
remote_host, remote_useragent)
|
||
|
|
headers = pprint.pformat(self.headers_log(environ))
|
||
|
|
self.logger.debug("Request headers:\n%s", headers)
|
||
|
|
|
||
|
|
# Let reverse proxies overwrite SCRIPT_NAME
|
||
|
|
if "HTTP_X_SCRIPT_NAME" in environ:
|
||
|
|
# script_name must be removed from PATH_INFO by the client.
|
||
|
|
unsafe_base_prefix = environ["HTTP_X_SCRIPT_NAME"]
|
||
|
|
self.logger.debug("Script name overwritten by client: %r",
|
||
|
|
unsafe_base_prefix)
|
||
|
|
else:
|
||
|
|
# SCRIPT_NAME is already removed from PATH_INFO, according to the
|
||
|
|
# WSGI specification.
|
||
|
|
unsafe_base_prefix = environ.get("SCRIPT_NAME", "")
|
||
|
|
# Sanitize base prefix
|
||
|
|
base_prefix = storage.sanitize_path(unsafe_base_prefix).rstrip("/")
|
||
|
|
self.logger.debug("Sanitized script name: %r", base_prefix)
|
||
|
|
# Sanitize request URI (a WSGI server indicates with an empty path,
|
||
|
|
# that the URL targets the application root without a trailing slash)
|
||
|
|
path = storage.sanitize_path(environ.get("PATH_INFO", ""))
|
||
|
|
self.logger.debug("Sanitized path: %r", path)
|
||
|
|
|
||
|
|
# Get function corresponding to method
|
||
|
|
function = getattr(self, "do_%s" % environ["REQUEST_METHOD"].upper())
|
||
|
|
|
||
|
|
# If "/.well-known" is not available, clients query "/"
|
||
|
|
if path == "/.well-known" or path.startswith("/.well-known/"):
|
||
|
|
return response(*NOT_FOUND)
|
||
|
|
|
||
|
|
# Ask authentication backend to check rights
|
||
|
|
external_login = self.Auth.get_external_login(environ)
|
||
|
|
authorization = environ.get("HTTP_AUTHORIZATION", "")
|
||
|
|
if external_login:
|
||
|
|
login, password = external_login
|
||
|
|
elif authorization.startswith("Basic"):
|
||
|
|
authorization = authorization[len("Basic"):].strip()
|
||
|
|
login, password = self.decode(base64.b64decode(
|
||
|
|
authorization.encode("ascii")), environ).split(":", 1)
|
||
|
|
else:
|
||
|
|
# DEPRECATED: use remote_user backend instead
|
||
|
|
login = environ.get("REMOTE_USER", "")
|
||
|
|
password = ""
|
||
|
|
user = self.Auth.map_login_to_user(login)
|
||
|
|
|
||
|
|
if not user:
|
||
|
|
is_authenticated = True
|
||
|
|
elif not storage.is_safe_path_component(user):
|
||
|
|
# Prevent usernames like "user/calendar.ics"
|
||
|
|
self.logger.info("Refused unsafe username: %r", user)
|
||
|
|
is_authenticated = False
|
||
|
|
else:
|
||
|
|
is_authenticated = self.Auth.is_authenticated2(login, user,
|
||
|
|
password)
|
||
|
|
if not is_authenticated:
|
||
|
|
self.logger.info("Failed login attempt: %r", user)
|
||
|
|
# Random delay to avoid timing oracles and bruteforce attacks
|
||
|
|
delay = self.configuration.getfloat("auth", "delay")
|
||
|
|
if delay > 0:
|
||
|
|
random_delay = delay * (0.5 + random.random())
|
||
|
|
self.logger.debug("Sleeping %.3f seconds", random_delay)
|
||
|
|
time.sleep(random_delay)
|
||
|
|
else:
|
||
|
|
self.logger.info("Successful login: %r", user)
|
||
|
|
|
||
|
|
# Create principal collection
|
||
|
|
if user and is_authenticated:
|
||
|
|
principal_path = "/%s/" % user
|
||
|
|
if self.Rights.authorized(user, principal_path, "w"):
|
||
|
|
with self.Collection.acquire_lock("r", user):
|
||
|
|
principal = next(
|
||
|
|
self.Collection.discover(principal_path, depth="1"),
|
||
|
|
None)
|
||
|
|
if not principal:
|
||
|
|
with self.Collection.acquire_lock("w", user):
|
||
|
|
try:
|
||
|
|
self.Collection.create_collection(principal_path)
|
||
|
|
except ValueError as e:
|
||
|
|
self.logger.warning("Failed to create principal "
|
||
|
|
"collection %r: %s", user, e)
|
||
|
|
is_authenticated = False
|
||
|
|
else:
|
||
|
|
self.logger.warning("Access to principal path %r denied by "
|
||
|
|
"rights backend", principal_path)
|
||
|
|
|
||
|
|
# Verify content length
|
||
|
|
content_length = int(environ.get("CONTENT_LENGTH") or 0)
|
||
|
|
if content_length:
|
||
|
|
max_content_length = self.configuration.getint(
|
||
|
|
"server", "max_content_length")
|
||
|
|
if max_content_length and content_length > max_content_length:
|
||
|
|
self.logger.info(
|
||
|
|
"Request body too large: %d", content_length)
|
||
|
|
return response(*REQUEST_ENTITY_TOO_LARGE)
|
||
|
|
|
||
|
|
if is_authenticated:
|
||
|
|
status, headers, answer = function(
|
||
|
|
environ, base_prefix, path, user)
|
||
|
|
if (status, headers, answer) == NOT_ALLOWED:
|
||
|
|
self.logger.info("Access to %r denied for %s", path,
|
||
|
|
repr(user) if user else "anonymous user")
|
||
|
|
else:
|
||
|
|
status, headers, answer = NOT_ALLOWED
|
||
|
|
|
||
|
|
if (status, headers, answer) == NOT_ALLOWED and not (
|
||
|
|
user and is_authenticated) and not external_login:
|
||
|
|
# Unknown or unauthorized user
|
||
|
|
self.logger.debug("Asking client for authentication")
|
||
|
|
status = client.UNAUTHORIZED
|
||
|
|
realm = self.configuration.get("server", "realm")
|
||
|
|
headers = dict(headers)
|
||
|
|
headers.update({
|
||
|
|
"WWW-Authenticate":
|
||
|
|
"Basic realm=\"%s\"" % realm})
|
||
|
|
|
||
|
|
return response(status, headers, answer)
|
||
|
|
|
||
|
|
def _access(self, user, path, permission, item=None):
|
||
|
|
"""Check if ``user`` can access ``path`` or the parent collection.
|
||
|
|
|
||
|
|
``permission`` must either be "r" or "w".
|
||
|
|
|
||
|
|
If ``item`` is given, only access to that class of item is checked.
|
||
|
|
|
||
|
|
"""
|
||
|
|
allowed = False
|
||
|
|
if not item or isinstance(item, storage.BaseCollection):
|
||
|
|
allowed |= self.Rights.authorized(user, path, permission)
|
||
|
|
if not item or not isinstance(item, storage.BaseCollection):
|
||
|
|
allowed |= self.Rights.authorized_item(user, path, permission)
|
||
|
|
return allowed
|
||
|
|
|
||
|
|
def _read_raw_content(self, environ):
|
||
|
|
content_length = int(environ.get("CONTENT_LENGTH") or 0)
|
||
|
|
if not content_length:
|
||
|
|
return b""
|
||
|
|
content = environ["wsgi.input"].read(content_length)
|
||
|
|
if len(content) < content_length:
|
||
|
|
raise RuntimeError("Request body too short: %d" % len(content))
|
||
|
|
return content
|
||
|
|
|
||
|
|
def _read_content(self, environ):
|
||
|
|
content = self.decode(self._read_raw_content(environ), environ)
|
||
|
|
self.logger.debug("Request content:\n%s", content)
|
||
|
|
return content
|
||
|
|
|
||
|
|
def _read_xml_content(self, environ):
|
||
|
|
content = self.decode(self._read_raw_content(environ), environ)
|
||
|
|
if not content:
|
||
|
|
return None
|
||
|
|
try:
|
||
|
|
xml_content = ET.fromstring(content)
|
||
|
|
except ET.ParseError as e:
|
||
|
|
self.logger.debug("Request content (Invalid XML):\n%s", content)
|
||
|
|
raise RuntimeError("Failed to parse XML: %s" % e) from e
|
||
|
|
if self.logger.isEnabledFor(logging.DEBUG):
|
||
|
|
self.logger.debug("Request content:\n%s",
|
||
|
|
xmlutils.pretty_xml(xml_content))
|
||
|
|
return xml_content
|
||
|
|
|
||
|
|
def _write_xml_content(self, xml_content):
|
||
|
|
if self.logger.isEnabledFor(logging.DEBUG):
|
||
|
|
self.logger.debug("Response content:\n%s",
|
||
|
|
xmlutils.pretty_xml(xml_content))
|
||
|
|
f = io.BytesIO()
|
||
|
|
ET.ElementTree(xml_content).write(f, encoding=self.encoding,
|
||
|
|
xml_declaration=True)
|
||
|
|
return f.getvalue()
|
||
|
|
|
||
|
|
def do_DELETE(self, environ, base_prefix, path, user):
|
||
|
|
"""Manage DELETE request."""
|
||
|
|
if not self._access(user, path, "w"):
|
||
|
|
return NOT_ALLOWED
|
||
|
|
with self.Collection.acquire_lock("w", user):
|
||
|
|
item = next(self.Collection.discover(path), None)
|
||
|
|
if not self._access(user, path, "w", item):
|
||
|
|
return NOT_ALLOWED
|
||
|
|
if not item:
|
||
|
|
return NOT_FOUND
|
||
|
|
if_match = environ.get("HTTP_IF_MATCH", "*")
|
||
|
|
if if_match not in ("*", item.etag):
|
||
|
|
# ETag precondition not verified, do not delete item
|
||
|
|
return PRECONDITION_FAILED
|
||
|
|
if isinstance(item, storage.BaseCollection):
|
||
|
|
xml_answer = xmlutils.delete(base_prefix, path, item)
|
||
|
|
else:
|
||
|
|
xml_answer = xmlutils.delete(
|
||
|
|
base_prefix, path, item.collection, item.href)
|
||
|
|
headers = {"Content-Type": "text/xml; charset=%s" % self.encoding}
|
||
|
|
return client.OK, headers, self._write_xml_content(xml_answer)
|
||
|
|
|
||
|
|
def do_GET(self, environ, base_prefix, path, user):
|
||
|
|
"""Manage GET request."""
|
||
|
|
# Redirect to .web if the root URL is requested
|
||
|
|
if not path.strip("/"):
|
||
|
|
web_path = ".web"
|
||
|
|
if not environ.get("PATH_INFO"):
|
||
|
|
web_path = posixpath.join(posixpath.basename(base_prefix),
|
||
|
|
web_path)
|
||
|
|
return (client.FOUND,
|
||
|
|
{"Location": web_path, "Content-Type": "text/plain"},
|
||
|
|
"Redirected to %s" % web_path)
|
||
|
|
# Dispatch .web URL to web module
|
||
|
|
if path == "/.web" or path.startswith("/.web/"):
|
||
|
|
return self.Web.get(environ, base_prefix, path, user)
|
||
|
|
if not self._access(user, path, "r"):
|
||
|
|
return NOT_ALLOWED
|
||
|
|
with self.Collection.acquire_lock("r", user):
|
||
|
|
item = next(self.Collection.discover(path), None)
|
||
|
|
if not self._access(user, path, "r", item):
|
||
|
|
return NOT_ALLOWED
|
||
|
|
if not item:
|
||
|
|
return NOT_FOUND
|
||
|
|
if isinstance(item, storage.BaseCollection):
|
||
|
|
tag = item.get_meta("tag")
|
||
|
|
if not tag:
|
||
|
|
return DIRECTORY_LISTING
|
||
|
|
content_type = xmlutils.MIMETYPES[tag]
|
||
|
|
else:
|
||
|
|
content_type = xmlutils.OBJECT_MIMETYPES[item.name]
|
||
|
|
headers = {
|
||
|
|
"Content-Type": content_type,
|
||
|
|
"Last-Modified": item.last_modified,
|
||
|
|
"ETag": item.etag}
|
||
|
|
answer = item.serialize()
|
||
|
|
return client.OK, headers, answer
|
||
|
|
|
||
|
|
def do_HEAD(self, environ, base_prefix, path, user):
|
||
|
|
"""Manage HEAD request."""
|
||
|
|
status, headers, answer = self.do_GET(
|
||
|
|
environ, base_prefix, path, user)
|
||
|
|
return status, headers, None
|
||
|
|
|
||
|
|
def do_MKCALENDAR(self, environ, base_prefix, path, user):
|
||
|
|
"""Manage MKCALENDAR request."""
|
||
|
|
if not self.Rights.authorized(user, path, "w"):
|
||
|
|
return NOT_ALLOWED
|
||
|
|
try:
|
||
|
|
xml_content = self._read_xml_content(environ)
|
||
|
|
except RuntimeError as e:
|
||
|
|
self.logger.warning(
|
||
|
|
"Bad MKCALENDAR request on %r: %s", path, e, exc_info=True)
|
||
|
|
return BAD_REQUEST
|
||
|
|
except socket.timeout as e:
|
||
|
|
self.logger.debug("client timed out", exc_info=True)
|
||
|
|
return REQUEST_TIMEOUT
|
||
|
|
with self.Collection.acquire_lock("w", user):
|
||
|
|
item = next(self.Collection.discover(path), None)
|
||
|
|
if item:
|
||
|
|
return WEBDAV_PRECONDITION_FAILED
|
||
|
|
props = xmlutils.props_from_request(xml_content)
|
||
|
|
props["tag"] = "VCALENDAR"
|
||
|
|
# TODO: use this?
|
||
|
|
# timezone = props.get("C:calendar-timezone")
|
||
|
|
try:
|
||
|
|
storage.check_and_sanitize_props(props)
|
||
|
|
self.Collection.create_collection(path, props=props)
|
||
|
|
except ValueError as e:
|
||
|
|
self.logger.warning(
|
||
|
|
"Bad MKCALENDAR request on %r: %s", path, e, exc_info=True)
|
||
|
|
return BAD_REQUEST
|
||
|
|
return client.CREATED, {}, None
|
||
|
|
|
||
|
|
def do_MKCOL(self, environ, base_prefix, path, user):
|
||
|
|
"""Manage MKCOL request."""
|
||
|
|
if not self.Rights.authorized(user, path, "w"):
|
||
|
|
return NOT_ALLOWED
|
||
|
|
try:
|
||
|
|
xml_content = self._read_xml_content(environ)
|
||
|
|
except RuntimeError as e:
|
||
|
|
self.logger.warning(
|
||
|
|
"Bad MKCOL request on %r: %s", path, e, exc_info=True)
|
||
|
|
return BAD_REQUEST
|
||
|
|
except socket.timeout as e:
|
||
|
|
self.logger.debug("client timed out", exc_info=True)
|
||
|
|
return REQUEST_TIMEOUT
|
||
|
|
with self.Collection.acquire_lock("w", user):
|
||
|
|
item = next(self.Collection.discover(path), None)
|
||
|
|
if item:
|
||
|
|
return WEBDAV_PRECONDITION_FAILED
|
||
|
|
props = xmlutils.props_from_request(xml_content)
|
||
|
|
try:
|
||
|
|
storage.check_and_sanitize_props(props)
|
||
|
|
self.Collection.create_collection(path, props=props)
|
||
|
|
except ValueError as e:
|
||
|
|
self.logger.warning(
|
||
|
|
"Bad MKCOL request on %r: %s", path, e, exc_info=True)
|
||
|
|
return BAD_REQUEST
|
||
|
|
return client.CREATED, {}, None
|
||
|
|
|
||
|
|
def do_MOVE(self, environ, base_prefix, path, user):
|
||
|
|
"""Manage MOVE request."""
|
||
|
|
raw_dest = environ.get("HTTP_DESTINATION", "")
|
||
|
|
to_url = urlparse(raw_dest)
|
||
|
|
if to_url.netloc != environ["HTTP_HOST"]:
|
||
|
|
self.logger.info("Unsupported destination address: %r", raw_dest)
|
||
|
|
# Remote destination server, not supported
|
||
|
|
return REMOTE_DESTINATION
|
||
|
|
if not self._access(user, path, "w"):
|
||
|
|
return NOT_ALLOWED
|
||
|
|
to_path = storage.sanitize_path(to_url.path)
|
||
|
|
if not (to_path + "/").startswith(base_prefix + "/"):
|
||
|
|
self.logger.warning("Destination %r from MOVE request on %r does"
|
||
|
|
"n't start with base prefix", to_path, path)
|
||
|
|
return NOT_ALLOWED
|
||
|
|
to_path = to_path[len(base_prefix):]
|
||
|
|
if not self._access(user, to_path, "w"):
|
||
|
|
return NOT_ALLOWED
|
||
|
|
|
||
|
|
with self.Collection.acquire_lock("w", user):
|
||
|
|
item = next(self.Collection.discover(path), None)
|
||
|
|
if not self._access(user, path, "w", item):
|
||
|
|
return NOT_ALLOWED
|
||
|
|
if not self._access(user, to_path, "w", item):
|
||
|
|
return NOT_ALLOWED
|
||
|
|
if not item:
|
||
|
|
return NOT_FOUND
|
||
|
|
if isinstance(item, storage.BaseCollection):
|
||
|
|
return WEBDAV_PRECONDITION_FAILED
|
||
|
|
|
||
|
|
to_item = next(self.Collection.discover(to_path), None)
|
||
|
|
if (isinstance(to_item, storage.BaseCollection) or
|
||
|
|
to_item and environ.get("HTTP_OVERWRITE", "F") != "T"):
|
||
|
|
return WEBDAV_PRECONDITION_FAILED
|
||
|
|
to_parent_path = storage.sanitize_path(
|
||
|
|
"/%s/" % posixpath.dirname(to_path.strip("/")))
|
||
|
|
to_collection = next(
|
||
|
|
self.Collection.discover(to_parent_path), None)
|
||
|
|
if not to_collection:
|
||
|
|
return WEBDAV_PRECONDITION_FAILED
|
||
|
|
to_href = posixpath.basename(to_path.strip("/"))
|
||
|
|
try:
|
||
|
|
self.Collection.move(item, to_collection, to_href)
|
||
|
|
except ValueError as e:
|
||
|
|
self.logger.warning(
|
||
|
|
"Bad MOVE request on %r: %s", path, e, exc_info=True)
|
||
|
|
return BAD_REQUEST
|
||
|
|
return client.CREATED, {}, None
|
||
|
|
|
||
|
|
def do_OPTIONS(self, environ, base_prefix, path, user):
|
||
|
|
"""Manage OPTIONS request."""
|
||
|
|
headers = {
|
||
|
|
"Allow": ", ".join(
|
||
|
|
name[3:] for name in dir(self) if name.startswith("do_")),
|
||
|
|
"DAV": DAV_HEADERS}
|
||
|
|
return client.OK, headers, None
|
||
|
|
|
||
|
|
def do_PROPFIND(self, environ, base_prefix, path, user):
|
||
|
|
"""Manage PROPFIND request."""
|
||
|
|
if not self._access(user, path, "r"):
|
||
|
|
return NOT_ALLOWED
|
||
|
|
try:
|
||
|
|
xml_content = self._read_xml_content(environ)
|
||
|
|
except RuntimeError as e:
|
||
|
|
self.logger.warning(
|
||
|
|
"Bad PROPFIND request on %r: %s", path, e, exc_info=True)
|
||
|
|
return BAD_REQUEST
|
||
|
|
except socket.timeout as e:
|
||
|
|
self.logger.debug("client timed out", exc_info=True)
|
||
|
|
return REQUEST_TIMEOUT
|
||
|
|
with self.Collection.acquire_lock("r", user):
|
||
|
|
items = self.Collection.discover(
|
||
|
|
path, environ.get("HTTP_DEPTH", "0"))
|
||
|
|
# take root item for rights checking
|
||
|
|
item = next(items, None)
|
||
|
|
if not self._access(user, path, "r", item):
|
||
|
|
return NOT_ALLOWED
|
||
|
|
if not item:
|
||
|
|
return NOT_FOUND
|
||
|
|
# put item back
|
||
|
|
items = itertools.chain([item], items)
|
||
|
|
read_items, write_items = self.collect_allowed_items(items, user)
|
||
|
|
headers = {"DAV": DAV_HEADERS,
|
||
|
|
"Content-Type": "text/xml; charset=%s" % self.encoding}
|
||
|
|
status, xml_answer = xmlutils.propfind(
|
||
|
|
base_prefix, path, xml_content, read_items, write_items, user)
|
||
|
|
if status == client.FORBIDDEN:
|
||
|
|
return NOT_ALLOWED
|
||
|
|
else:
|
||
|
|
return status, headers, self._write_xml_content(xml_answer)
|
||
|
|
|
||
|
|
def do_PROPPATCH(self, environ, base_prefix, path, user):
|
||
|
|
"""Manage PROPPATCH request."""
|
||
|
|
if not self.Rights.authorized(user, path, "w"):
|
||
|
|
return NOT_ALLOWED
|
||
|
|
try:
|
||
|
|
xml_content = self._read_xml_content(environ)
|
||
|
|
except RuntimeError as e:
|
||
|
|
self.logger.warning(
|
||
|
|
"Bad PROPPATCH request on %r: %s", path, e, exc_info=True)
|
||
|
|
return BAD_REQUEST
|
||
|
|
except socket.timeout as e:
|
||
|
|
self.logger.debug("client timed out", exc_info=True)
|
||
|
|
return REQUEST_TIMEOUT
|
||
|
|
with self.Collection.acquire_lock("w", user):
|
||
|
|
item = next(self.Collection.discover(path), None)
|
||
|
|
if not isinstance(item, storage.BaseCollection):
|
||
|
|
return WEBDAV_PRECONDITION_FAILED
|
||
|
|
headers = {"DAV": DAV_HEADERS,
|
||
|
|
"Content-Type": "text/xml; charset=%s" % self.encoding}
|
||
|
|
try:
|
||
|
|
xml_answer = xmlutils.proppatch(base_prefix, path, xml_content,
|
||
|
|
item)
|
||
|
|
except ValueError as e:
|
||
|
|
self.logger.warning(
|
||
|
|
"Bad PROPPATCH request on %r: %s", path, e, exc_info=True)
|
||
|
|
return BAD_REQUEST
|
||
|
|
return (client.MULTI_STATUS, headers,
|
||
|
|
self._write_xml_content(xml_answer))
|
||
|
|
|
||
|
|
def do_PUT(self, environ, base_prefix, path, user):
|
||
|
|
"""Manage PUT request."""
|
||
|
|
if not self._access(user, path, "w"):
|
||
|
|
return NOT_ALLOWED
|
||
|
|
try:
|
||
|
|
content = self._read_content(environ)
|
||
|
|
except RuntimeError as e:
|
||
|
|
self.logger.warning(
|
||
|
|
"Bad PUT request on %r: %s", path, e, exc_info=True)
|
||
|
|
return BAD_REQUEST
|
||
|
|
except socket.timeout as e:
|
||
|
|
self.logger.debug("client timed out", exc_info=True)
|
||
|
|
return REQUEST_TIMEOUT
|
||
|
|
with self.Collection.acquire_lock("w", user):
|
||
|
|
parent_path = storage.sanitize_path(
|
||
|
|
"/%s/" % posixpath.dirname(path.strip("/")))
|
||
|
|
item = next(self.Collection.discover(path), None)
|
||
|
|
parent_item = next(self.Collection.discover(parent_path), None)
|
||
|
|
|
||
|
|
write_whole_collection = (
|
||
|
|
isinstance(item, storage.BaseCollection) or
|
||
|
|
not parent_item or (
|
||
|
|
not next(parent_item.list(), None) and
|
||
|
|
parent_item.get_meta("tag") not in (
|
||
|
|
"VADDRESSBOOK", "VCALENDAR")))
|
||
|
|
if write_whole_collection:
|
||
|
|
if not self.Rights.authorized(user, path, "w"):
|
||
|
|
return NOT_ALLOWED
|
||
|
|
elif not self.Rights.authorized_item(user, path, "w"):
|
||
|
|
return NOT_ALLOWED
|
||
|
|
|
||
|
|
etag = environ.get("HTTP_IF_MATCH", "")
|
||
|
|
if not item and etag:
|
||
|
|
# Etag asked but no item found: item has been removed
|
||
|
|
return PRECONDITION_FAILED
|
||
|
|
if item and etag and item.etag != etag:
|
||
|
|
# Etag asked but item not matching: item has changed
|
||
|
|
return PRECONDITION_FAILED
|
||
|
|
|
||
|
|
match = environ.get("HTTP_IF_NONE_MATCH", "") == "*"
|
||
|
|
if item and match:
|
||
|
|
# Creation asked but item found: item can't be replaced
|
||
|
|
return PRECONDITION_FAILED
|
||
|
|
|
||
|
|
try:
|
||
|
|
items = tuple(vobject.readComponents(content or ""))
|
||
|
|
if not write_whole_collection and len(items) != 1:
|
||
|
|
raise RuntimeError(
|
||
|
|
"Item contains %d components" % len(items))
|
||
|
|
if write_whole_collection or not parent_item.get_meta("tag"):
|
||
|
|
content_type = environ.get("CONTENT_TYPE",
|
||
|
|
"").split(";")[0]
|
||
|
|
tags = {value: key
|
||
|
|
for key, value in xmlutils.MIMETYPES.items()}
|
||
|
|
tag = tags.get(content_type)
|
||
|
|
if items and items[0].name == "VCALENDAR":
|
||
|
|
tag = "VCALENDAR"
|
||
|
|
elif items and items[0].name in ("VCARD", "VLIST"):
|
||
|
|
tag = "VADDRESSBOOK"
|
||
|
|
else:
|
||
|
|
tag = parent_item.get_meta("tag")
|
||
|
|
if tag == "VCALENDAR" and len(items) > 1:
|
||
|
|
raise RuntimeError("VCALENDAR collection contains %d "
|
||
|
|
"components" % len(items))
|
||
|
|
for i in items:
|
||
|
|
storage.check_and_sanitize_item(
|
||
|
|
i, is_collection=write_whole_collection, uid=item.uid
|
||
|
|
if not write_whole_collection and item else None,
|
||
|
|
tag=tag)
|
||
|
|
except Exception as e:
|
||
|
|
self.logger.warning(
|
||
|
|
"Bad PUT request on %r: %s", path, e, exc_info=True)
|
||
|
|
return BAD_REQUEST
|
||
|
|
|
||
|
|
if write_whole_collection:
|
||
|
|
props = {}
|
||
|
|
if tag:
|
||
|
|
props["tag"] = tag
|
||
|
|
if tag == "VCALENDAR" and items:
|
||
|
|
if hasattr(items[0], "x_wr_calname"):
|
||
|
|
calname = items[0].x_wr_calname.value
|
||
|
|
if calname:
|
||
|
|
props["D:displayname"] = calname
|
||
|
|
if hasattr(items[0], "x_wr_caldesc"):
|
||
|
|
caldesc = items[0].x_wr_caldesc.value
|
||
|
|
if caldesc:
|
||
|
|
props["C:calendar-description"] = caldesc
|
||
|
|
try:
|
||
|
|
storage.check_and_sanitize_props(props)
|
||
|
|
new_item = self.Collection.create_collection(
|
||
|
|
path, items, props)
|
||
|
|
except ValueError as e:
|
||
|
|
self.logger.warning(
|
||
|
|
"Bad PUT request on %r: %s", path, e, exc_info=True)
|
||
|
|
return BAD_REQUEST
|
||
|
|
else:
|
||
|
|
href = posixpath.basename(path.strip("/"))
|
||
|
|
try:
|
||
|
|
if tag and not parent_item.get_meta("tag"):
|
||
|
|
new_props = parent_item.get_meta()
|
||
|
|
new_props["tag"] = tag
|
||
|
|
storage.check_and_sanitize_props(new_props)
|
||
|
|
parent_item.set_meta_all(new_props)
|
||
|
|
new_item = parent_item.upload(href, items[0])
|
||
|
|
except ValueError as e:
|
||
|
|
self.logger.warning(
|
||
|
|
"Bad PUT request on %r: %s", path, e, exc_info=True)
|
||
|
|
return BAD_REQUEST
|
||
|
|
headers = {"ETag": new_item.etag}
|
||
|
|
return client.CREATED, headers, None
|
||
|
|
|
||
|
|
def do_REPORT(self, environ, base_prefix, path, user):
|
||
|
|
"""Manage REPORT request."""
|
||
|
|
if not self._access(user, path, "r"):
|
||
|
|
return NOT_ALLOWED
|
||
|
|
try:
|
||
|
|
xml_content = self._read_xml_content(environ)
|
||
|
|
except RuntimeError as e:
|
||
|
|
self.logger.warning(
|
||
|
|
"Bad REPORT request on %r: %s", path, e, exc_info=True)
|
||
|
|
return BAD_REQUEST
|
||
|
|
except socket.timeout as e:
|
||
|
|
self.logger.debug("client timed out", exc_info=True)
|
||
|
|
return REQUEST_TIMEOUT
|
||
|
|
with self.Collection.acquire_lock("r", user):
|
||
|
|
item = next(self.Collection.discover(path), None)
|
||
|
|
if not self._access(user, path, "r", item):
|
||
|
|
return NOT_ALLOWED
|
||
|
|
if not item:
|
||
|
|
return NOT_FOUND
|
||
|
|
if isinstance(item, storage.BaseCollection):
|
||
|
|
collection = item
|
||
|
|
else:
|
||
|
|
collection = item.collection
|
||
|
|
headers = {"Content-Type": "text/xml; charset=%s" % self.encoding}
|
||
|
|
try:
|
||
|
|
status, xml_answer = xmlutils.report(
|
||
|
|
base_prefix, path, xml_content, collection)
|
||
|
|
except ValueError as e:
|
||
|
|
self.logger.warning(
|
||
|
|
"Bad REPORT request on %r: %s", path, e, exc_info=True)
|
||
|
|
return BAD_REQUEST
|
||
|
|
return (status, headers, self._write_xml_content(xml_answer))
|