244 lines
13 KiB
Python
244 lines
13 KiB
Python
# This file is part of Radicale - CalDAV and CardDAV 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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# Copyright © 2017-2020 Unrud <unrud@outlook.com>
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# Copyright © 2020-2020 Tuna Celik <tuna@jakpark.com>
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# Copyright © 2025-2026 Peter Bieringer <pb@bieringer.de>
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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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import errno
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import re
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import socket
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import xml.etree.ElementTree as ET
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from http import client
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from typing import Dict, Optional, Union, cast
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import defusedxml.ElementTree as DefusedET
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import radicale.item as radicale_item
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from radicale import httputils, sharing, storage, types, xmlutils
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from radicale.app.base import Access, ApplicationBase
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from radicale.hook import HookNotificationItem, HookNotificationItemTypes
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from radicale.log import logger
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def xml_proppatch(base_prefix: str, path: str,
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xml_request: Optional[ET.Element],
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collection: Union[storage.BaseCollection, None], share: Union[dict, None] = None, share_overlay: bool = False, _sharing: Union[sharing.BaseSharing, None] = None) -> ET.Element:
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"""Read and answer PROPPATCH requests.
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Read rfc4918-9.2 for info.
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"""
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multistatus = ET.Element(xmlutils.make_clark("D:multistatus"))
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response = ET.Element(xmlutils.make_clark("D:response"))
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multistatus.append(response)
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href = ET.Element(xmlutils.make_clark("D:href"))
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href.text = xmlutils.make_href(base_prefix, path)
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if share:
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# backmap
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href.text = href.text.replace(share['PathMapped'], share['PathOrToken'])
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response.append(href)
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# Create D:propstat element for props with status 200 OK
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propstat = ET.Element(xmlutils.make_clark("D:propstat"))
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status = ET.Element(xmlutils.make_clark("D:status"))
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status.text = xmlutils.make_response(200)
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props_ok = ET.Element(xmlutils.make_clark("D:prop"))
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propstat.append(props_ok)
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propstat.append(status)
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response.append(propstat)
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props_with_remove = xmlutils.props_from_request(xml_request)
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if share and share_overlay:
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# PROPPATCH overlay adjustment
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logger.trace("PROPPATCH/xml_proppatch: share+share_overlay is active: %r", share)
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if share['Properties'] is not None:
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all_props_with_remove = cast(Dict[str, Optional[str]], radicale_item.check_and_sanitize_props(share['Properties']))
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else:
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all_props_with_remove = {}
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all_props_with_remove.update(props_with_remove)
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all_props = radicale_item.check_and_sanitize_props(all_props_with_remove)
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logger.trace("PROPPATCH/xml_proppatch: share+share_overlay result: %r", all_props)
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else:
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if collection is not None:
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# always the case, but makes mypy happy
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all_props_with_remove = cast(Dict[str, Optional[str]], dict(collection.get_meta()))
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all_props_with_remove.update(props_with_remove)
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all_props = radicale_item.check_and_sanitize_props(all_props_with_remove)
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if share and share_overlay and _sharing is not None:
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# _sharing is not None: always the case, but makes mypy happy
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_sharing.sharing_collection_update(ShareType=share['ShareType'],
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PathOrToken=share['PathOrToken'],
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OwnerOrUser=share['User'],
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Properties=cast(Dict[str, str], all_props))
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else:
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if collection is not None:
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# always the case, but makes mypy happy
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collection.set_meta(all_props)
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for short_name in props_with_remove:
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props_ok.append(ET.Element(xmlutils.make_clark(short_name)))
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return multistatus
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class ApplicationPartProppatch(ApplicationBase):
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def do_PROPPATCH(self, environ: types.WSGIEnviron, base_prefix: str,
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path: str, user: str, remote_host: str, remote_useragent: str) -> types.WSGIResponse:
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"""Manage PROPPATCH request."""
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permissions_filter = None
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share = None
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share_overlay = False
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path_orig = path
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if self._sharing._enabled:
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# Sharing by token or map (if enabled)
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share = self._sharing.sharing_collection_resolver(path, user)
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if share:
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# overwrite and run through extended permission check
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path = share['PathMapped']
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user = share['Owner']
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permissions_filter = share['Permissions']
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access = Access(self._rights, user, path, permissions_filter)
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raw_permissions = self._rights.authorization(user, path)
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if not access.check("w"):
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logger.trace("PROPPATCH/xml_proppatch: no native write-access: %r", path)
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if share:
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# priority share->rights->global
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logger.trace("PROPPATCH/share: raw_permissions=%r share[Permissions]=%r permit_properties_overlay=%s enforce_properties_overlay=%s", raw_permissions, share['Permissions'], self._sharing.permit_properties_overlay, self._sharing.enforce_properties_overlay)
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if ("P" in share['Permissions'] or
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("P" in raw_permissions and "p" not in share['Permissions']) or
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(self._sharing.permit_properties_overlay and "p" not in raw_permissions and "p" not in share['Permissions'])
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) and not (
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"p" in share['Permissions'] or
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("p" in raw_permissions and "P" not in share['Permissions']) or
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(not self._sharing.permit_properties_overlay and "P" not in raw_permissions and "P" not in share['Permissions'])):
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logger.info("PROPPATCH request on shared %r: write-access", path_orig)
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if permissions_filter is not None and "e" in permissions_filter:
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logger.info("PROPPATCH request on shared %r: write-access, overlay enforced, but disabled by share permission 'e'", path_orig)
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elif "e" in raw_permissions:
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logger.info("PROPPATCH request on shared %r: write-access, overlay enforced, but disabled by rights permission 'e'", path_orig)
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else:
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share_overlay = True
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else:
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logger.info("PROPPATCH request on shared %r: no write-access", path_orig)
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return httputils.NOT_ALLOWED
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else:
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return httputils.NOT_ALLOWED
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else:
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logger.trace("PROPPATCH/xml_proppatch: write-access: %r", path)
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if share:
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# write access -> check for enforced properties overlay
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logger.trace("PROPPATCH/xml_proppatch: write-access/sharing: %r", path_orig)
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if self._sharing.enforce_properties_overlay:
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if permissions_filter is not None and "e" in permissions_filter:
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logger.info("PROPPATCH request on shared %r: write-permissions, overlay enforced, but disabled by share permission 'e'", path_orig)
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elif "e" in raw_permissions:
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logger.info("PROPPATCH request on shared %r: write-permissions, overlay enforced, but disabled by rights permission 'e'", path_orig)
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else:
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share_overlay = True
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else:
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if permissions_filter is not None and "E" in permissions_filter:
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logger.info("PROPPATCH request on shared %r: write-permissions, overlay not enforced, but enforced by permission 'E'", path_orig)
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share_overlay = True
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try:
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xml_content = self._read_xml_request_body(environ)
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except RuntimeError as e:
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logger.warning(
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"Bad PROPPATCH request on %r: %s", path, e, exc_info=True)
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return httputils.BAD_REQUEST
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except socket.timeout:
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logger.debug("Client timed out", exc_info=True)
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return httputils.REQUEST_TIMEOUT
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if share_overlay:
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# call API function internally and no not trigger any hook
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headers = {"DAV": httputils.DAV_HEADERS,
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"Content-Type": "text/xml; charset=%s" % self._encoding}
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try:
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xml_answer = xml_proppatch(base_prefix, path, xml_content,
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None, share, share_overlay, self._sharing)
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if xml_content is not None:
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content = DefusedET.tostring(
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xml_content,
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encoding=self._encoding
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).decode(encoding=self._encoding)
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except ValueError as e:
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# return better matching HTTP result in case errno is provided and catched
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errno_match = re.search("\\[Errno ([0-9]+)\\]", str(e))
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if errno_match:
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logger.error(
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"Failed PROPPATCH request on %r: %s", path, e, exc_info=True)
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errno_e = int(errno_match.group(1))
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if errno_e == errno.ENOSPC:
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return httputils.INSUFFICIENT_STORAGE
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elif errno_e in [errno.EPERM, errno.EACCES]:
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return httputils.FORBIDDEN
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else:
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return httputils.INTERNAL_SERVER_ERROR
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else:
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logger.warning(
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"Bad PROPPATCH request on %r: %s", path, e, exc_info=True)
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return httputils.BAD_REQUEST
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return client.MULTI_STATUS, headers, self._xml_response(xml_answer), xmlutils.pretty_xml(xml_content)
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with self._storage.acquire_lock("w", user, path=path, request="PROPPATCH"):
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item = next(iter(self._storage.discover(path)), None)
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if not item:
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return httputils.NOT_FOUND
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if not access.check("w", item):
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return httputils.NOT_ALLOWED
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if not isinstance(item, storage.BaseCollection):
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return httputils.FORBIDDEN
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headers = {"DAV": httputils.DAV_HEADERS,
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"Content-Type": "text/xml; charset=%s" % self._encoding}
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try:
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xml_answer = xml_proppatch(base_prefix, path, xml_content,
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item, share)
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if xml_content is not None:
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content = DefusedET.tostring(
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xml_content,
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encoding=self._encoding
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).decode(encoding=self._encoding)
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if self._hook.enabled:
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hook_notification_item = HookNotificationItem(
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notification_item_type=HookNotificationItemTypes.CPATCH,
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path=access.path,
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content=content,
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content_type=None, # Can't easily determine content type, won't trigger email hook
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uid=None,
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old_content=None,
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new_content=content
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)
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self._hook.notify(hook_notification_item)
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except ValueError as e:
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# return better matching HTTP result in case errno is provided and catched
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errno_match = re.search("\\[Errno ([0-9]+)\\]", str(e))
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if errno_match:
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logger.error(
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"Failed PROPPATCH request on %r: %s", path, e, exc_info=True)
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errno_e = int(errno_match.group(1))
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if errno_e == errno.ENOSPC:
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return httputils.INSUFFICIENT_STORAGE
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elif errno_e in [errno.EPERM, errno.EACCES]:
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return httputils.FORBIDDEN
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else:
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return httputils.INTERNAL_SERVER_ERROR
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else:
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logger.warning(
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"Bad PROPPATCH request on %r: %s", path, e, exc_info=True)
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return httputils.BAD_REQUEST
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return client.MULTI_STATUS, headers, self._xml_response(xml_answer), xmlutils.pretty_xml(xml_content)
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