sharing: properties overlay by proppatch

DOCUMENTATION.md

@@ -2110,8 +2110,8 @@ Permit create of token-based sharing
 
 Default: `false`
 
-* If `False` it can be explicitly granted by `permissions: t`
-* If `True` it can be explicitly forbidden by `permissions: T`
+* If `False` it can be explicitly granted by permissions: `T`
+* If `True` it can be explicitly forbidden by permissions: `t`
 
 ##### permit_create_map
 
@@ -2121,8 +2121,30 @@ Permit create of map-based sharing
 
 Default: `false`
 
-* If `False` it can be explicitly granted by `permissions: m`
-* If `True` it can be explicitly forbidden by `permissions: M`
+* If `False` it can be explicitly granted by permissions: `M`
+* If `True` it can be explicitly forbidden by permissions: `m`
+
+##### permit_properties_overlay
+
+_(>= 3.7.0)_
+
+Permit (limited) properties overlay by user of shared collection
+
+Default: `false`
+
+* If `False` it can be explicitly granted by *share* permissions: `P`
+* If `True` it can be explicitly forbidden by *share* permissions: `p`
+
+##### enforce_properties_overlay
+
+_(>= 3.7.0)_
+
+Enforce properties overlay even on write access
+
+Default: `true`
+
+* If `False` it can be explicitly enforced by *share* permissions: `E`
+* If `True` it can be explicitly forbidden by *share* permissions: `e`
 
 ##### default_permissions_create_token
 
@@ -2130,12 +2152,16 @@ Default permissions for create token-based sharing
 
 Default: `r`
 
+Supported: `rwEePp`
+
 ##### default_permissions_create_map
 
 Default permissions for map-based sharing
 
 Default: `r`
 
+Supported: `rwEePp`
+
 ## Supported Clients
 
 Radicale has been tested with:

config

@@ -327,10 +327,22 @@
 #  If True it can be explicitly forbidden by permissions: M
 #permit_create_map = false
 
+# Permit properties overlay
+#  If False it can be explicitly granted by share permissions: P
+#  If True it can be explicitly forbidden by share permissions: p
+#permit_properties_overlay = false
+
+# Enforce properties overlay on write access
+#  If False it can be explicitly enforced by share permissions: E
+#  If True it can be explicitly forbidden by share permissions: e
+#enforce_properties_overlay = true
+
 # Default permissions for token-based sharing
+#   Supported: rwEePp
 #default_permissions_create_token = r
 
 # Default permissions for map-based sharing
+#   Supported: rwEePp
 #default_permissions_create_map = r
 
 

radicale/app/proppatch.py

@@ -29,7 +29,7 @@ from typing import Dict, Optional, Union, cast
 import defusedxml.ElementTree as DefusedET
 
 import radicale.item as radicale_item
-from radicale import httputils, storage, types, xmlutils
+from radicale import httputils, sharing, storage, types, xmlutils
 from radicale.app.base import Access, ApplicationBase
 from radicale.hook import HookNotificationItem, HookNotificationItemTypes
 from radicale.log import logger
@@ -37,7 +37,7 @@ from radicale.log import logger
 
 def xml_proppatch(base_prefix: str, path: str,
                   xml_request: Optional[ET.Element],
-                  collection: storage.BaseCollection, sharing: Union[dict, None] = None) -> ET.Element:
+                  collection: Union[storage.BaseCollection, None], sharing: Union[dict, None] = None, sharing_overlay: bool = False, _sharing: Union[sharing.BaseSharing, None] = None) -> ET.Element:
     """Read and answer PROPPATCH requests.
 
     Read rfc4918-9.2 for info.
@@ -62,11 +62,32 @@ def xml_proppatch(base_prefix: str, path: str,
     response.append(propstat)
 
     props_with_remove = xmlutils.props_from_request(xml_request)
-    all_props_with_remove = cast(Dict[str, Optional[str]],
-                                 dict(collection.get_meta()))
+    if sharing and sharing_overlay:
+        # PROPPATCH overlay adjustment
+        logger.debug("TRACE/PROPPATCH/xml_proppatch: sharing+sharing_overlay is active: %r", sharing)
+        if sharing['Properties'] is not None:
+            all_props_with_remove = cast(Dict[str, Optional[str]], radicale_item.check_and_sanitize_props(sharing['Properties']))
+        else:
+            all_props_with_remove = {}
+        all_props_with_remove.update(props_with_remove)
+        all_props = radicale_item.check_and_sanitize_props(all_props_with_remove)
+        logger.debug("TRACE/PROPPATCH/xml_proppatch: sharing+sharing_overlay result: %r", all_props)
+    else:
+        if collection is not None:
+            # always the case, but makes mypy happy
+            all_props_with_remove = cast(Dict[str, Optional[str]], dict(collection.get_meta()))
     all_props_with_remove.update(props_with_remove)
     all_props = radicale_item.check_and_sanitize_props(all_props_with_remove)
-    collection.set_meta(all_props)
+    if sharing and sharing_overlay and _sharing is not None:
+        # _sharing is not None: always the case, but makes mypy happy
+        _sharing.update_sharing(ShareType=sharing['ShareType'],
+                                PathOrToken=sharing['PathOrToken'],
+                                OwnerOrUser=sharing['User'],
+                                Properties=cast(Dict[str, str], all_props))
+    else:
+        if collection is not None:
+            # always the case, but makes mypy happy
+            collection.set_meta(all_props)
     for short_name in props_with_remove:
         props_ok.append(ET.Element(xmlutils.make_clark(short_name)))
 
@@ -80,6 +101,8 @@ class ApplicationPartProppatch(ApplicationBase):
         """Manage PROPPATCH request."""
         permissions_filter = None
         sharing = None
+        sharing_overlay = False
+        path_orig = path
         if self._sharing._enabled:
             # Sharing by token or map (if enabled)
             sharing = self._sharing.sharing_collection_resolver(path, user)
@@ -90,7 +113,39 @@ class ApplicationPartProppatch(ApplicationBase):
                 permissions_filter = sharing['Permissions']
         access = Access(self._rights, user, path, permissions_filter)
         if not access.check("w"):
-            return httputils.NOT_ALLOWED
+            logger.debug("TRACE/PROPPATCH/xml_proppatch: no write-access: %r", path)
+            if sharing:
+                # no write access -> use properties overlay
+                if self._sharing.permit_properties_overlay:
+                    if permissions_filter is not None and "P" in permissions_filter:
+                        logger.info("PROPPATCH request on shared %r: no write-permissions, overlay permitted, but denied by permission 'P'", path_orig)
+                        return httputils.NOT_ALLOWED
+                    else:
+                        logger.info("PROPPATCH request on shared %r: no write-permissions, overlay permitted by option", path_orig)
+                        sharing_overlay = True
+                else:
+                    if permissions_filter is not None and "p" in permissions_filter:
+                        logger.info("PROPPATCH request on shared %r: no write-permissions, overlay denied, but granted by permission 'p'", path_orig)
+                        sharing_overlay = True
+                    else:
+                        logger.info("PROPPATCH request on shared %r: no write-permissions and overlay denied by option", path_orig)
+                        return httputils.NOT_ALLOWED
+            else:
+                return httputils.NOT_ALLOWED
+        else:
+            logger.debug("TRACE/PROPPATCH/xml_proppatch: write-access: %r", path)
+            if sharing:
+                # write access -> check for enforced properties overlay
+                logger.debug("TRACE/PROPPATCH/xml_proppatch: write-access/sharing: %r", path_orig)
+                if self._sharing.enforce_properties_overlay:
+                    if permissions_filter is not None and "e" in permissions_filter:
+                        logger.info("PROPPATCH request on shared %r: write-permissions, overlay enforced, but disabled by permission 'e'", path_orig)
+                    else:
+                        sharing_overlay = True
+                else:
+                    if permissions_filter is not None and "E" in permissions_filter:
+                        logger.info("PROPPATCH request on shared %r: write-permissions, overlay not enforced, but enforced by permission 'E'", path_orig)
+                        sharing_overlay = True
         try:
             xml_content = self._read_xml_request_body(environ)
         except RuntimeError as e:
@@ -100,6 +155,38 @@ class ApplicationPartProppatch(ApplicationBase):
         except socket.timeout:
             logger.debug("Client timed out", exc_info=True)
             return httputils.REQUEST_TIMEOUT
+
+        if sharing_overlay:
+            # call API function internally and no not trigger any hook
+            headers = {"DAV": httputils.DAV_HEADERS,
+                       "Content-Type": "text/xml; charset=%s" % self._encoding}
+            try:
+                xml_answer = xml_proppatch(base_prefix, path, xml_content,
+                                           None, sharing, sharing_overlay, self._sharing)
+                if xml_content is not None:
+                    content = DefusedET.tostring(
+                        xml_content,
+                        encoding=self._encoding
+                    ).decode(encoding=self._encoding)
+            except ValueError as e:
+                # return better matching HTTP result in case errno is provided and catched
+                errno_match = re.search("\\[Errno ([0-9]+)\\]", str(e))
+                if errno_match:
+                    logger.error(
+                        "Failed PROPPATCH request on %r: %s", path, e, exc_info=True)
+                    errno_e = int(errno_match.group(1))
+                    if errno_e == errno.ENOSPC:
+                        return httputils.INSUFFICIENT_STORAGE
+                    elif errno_e in [errno.EPERM, errno.EACCES]:
+                        return httputils.FORBIDDEN
+                    else:
+                        return httputils.INTERNAL_SERVER_ERROR
+                else:
+                    logger.warning(
+                        "Bad PROPPATCH request on %r: %s", path, e, exc_info=True)
+                    return httputils.BAD_REQUEST
+            return client.MULTI_STATUS, headers, self._xml_response(xml_answer), xmlutils.pretty_xml(xml_content)
+
         with self._storage.acquire_lock("w", user, path=path, request="PROPPATCH"):
             item = next(iter(self._storage.discover(path)), None)
             if not item:

radicale/config.py

@@ -491,6 +491,14 @@ DEFAULT_CONFIG_SCHEMA: types.CONFIG_SCHEMA = OrderedDict([
             "value": "false",
             "help": "permit create of map-based sharing",
             "type": bool}),
+        ("permit_properties_overlay", {
+            "value": "false",
+            "help": "permit properties overlay",
+            "type": bool}),
+        ("enforce_properties_overlay", {
+            "value": "true",
+            "help": "enforce properties overlay on write access",
+            "type": bool}),
         ("default_permissions_create_token", {
             "value": "r",
             "help": "default permissions for token-based sharing",

radicale/rights/__init__.py

@@ -33,9 +33,15 @@ Permissions:
   - o: deny overwriting a collection in case permit_overwrite_collection=True (>= 3.3.0)
   - T: permit create of token-based sharing of collection in case permit_create_token=False (>= 3.7.0)
   - t: deny create of token-based sharing of collection in case permit_create_token=True (>= 3.7.0)
-  - M: permit create of map-based sharing of collection in case permit_create_map= False (>= 3.7.0)
+  - M: permit create of map-based sharing of collection in case permit_create_map=False (>= 3.7.0)
   - m: deny create of map-based sharing of collection in case permit_create_map=True (>= 3.7.0)
 
+Permissions only supported so far in share permissions:
+  - P: permit properties overlay in case permit_properties_overlay=False (>= 3.7.0)
+  - p: deny properties overlay in case permit_properties_overlay=True (>= 3.7.0)
+  - E: enable enforce properties overlay in case enforce_properties_overlay=False (>= 3.7.0)
+  - e: disable enforce of properties overlay in case enforce_properties_overlay=True (>= 3.7.0)
+
 Take a look at the class ``BaseRights`` if you want to implement your own.
 
 """
@@ -47,7 +53,7 @@ from radicale import config, utils
 INTERNAL_TYPES: Sequence[str] = ("authenticated", "owner_write", "owner_only",
                                  "from_file")
 
-INTERNAL_PERMISSIONS: str = "RriWwDdOoTtMm"
+INTERNAL_PERMISSIONS: str = "RriWwDdOoTtMmPpEe"
 
 
 def load(configuration: "config.Configuration") -> "BaseRights":

radicale/sharing/__init__.py

@@ -108,12 +108,16 @@ class BaseSharing:
         self.permit_create_map = configuration.get("sharing", "permit_create_map")
         self.default_permissions_create_token = configuration.get("sharing", "default_permissions_create_token")
         self.default_permissions_create_map = configuration.get("sharing", "default_permissions_create_map")
+        self.permit_properties_overlay = configuration.get("sharing", "permit_properties_overlay")
+        self.enforce_properties_overlay = configuration.get("sharing", "enforce_properties_overlay")
         logger.info("sharing.collection_by_map  : %s", self.sharing_collection_by_map)
         logger.info("sharing.collection_by_token: %s", self.sharing_collection_by_token)
         logger.info("sharing.permit_create_token: %s", self.permit_create_token)
         logger.info("sharing.permit_create_map  : %s", self.permit_create_map)
         logger.info("sharing.default_permissions_create_token: %r", self.default_permissions_create_token)
         logger.info("sharing.default_permissions_create_map  : %r", self.default_permissions_create_map)
+        logger.info("sharing.permit_properties_overlay: %s", self.permit_properties_overlay)
+        logger.info("sharing.enforce_properties_overlay: %s", self.enforce_properties_overlay)
 
         if ((self.sharing_collection_by_map is False) and (self.sharing_collection_by_token is False)):
             logger.info("sharing disabled as no feature is enabled")

radicale/tests/test_sharing.py

@@ -2495,7 +2495,7 @@ permissions: RrWw""")
             assert answer_dict['Lines'] == 1
             assert answer_dict['Content'][0]['Permissions'] == "RrWw"
 
-    def test_sharing_api_map_propfind_overlay(self) -> None:
+    def test_sharing_api_map_propfind_overlay_api(self) -> None:
         """share-by-map API usage tests related to proppatch."""
         self.configure({"auth": {"type": "htpasswd",
                                  "htpasswd_filename": self.htpasswd_file_path,
@@ -2690,3 +2690,386 @@ permissions: RrWw""")
             form_array.append("PathOrToken=" + path_shared_r)
             form_array.append("Properties=BUGGYENTRY=BUGGYVALUE")
             _, headers, answer = self._sharing_api_form("map", "update", check=400, login="user:userpw", form_array=form_array)
+
+    def test_sharing_api_map_propfind_overlay_proppatch(self) -> None:
+        """share-by-map API usage tests related to proppatch."""
+        self.configure({"auth": {"type": "htpasswd",
+                                 "htpasswd_filename": self.htpasswd_file_path,
+                                 "htpasswd_encryption": "plain"},
+                        "sharing": {
+                                    "type": "csv",
+                                    "permit_create_map": True,
+                                    "permit_create_token": True,
+                                    "collection_by_map": "True",
+                                    "collection_by_token": "True"},
+                        "logging": {"request_header_on_debug": "False",
+                                    "response_content_on_debug": "True",
+                                    "request_content_on_debug": "True"},
+                        "rights": {"type": "owner_only"}})
+
+        json_dict: dict
+
+        logging.info("\n*** prepare and test access")
+
+        for db_type in list(filter(lambda item: item != "none", sharing.INTERNAL_TYPES)):
+            logging.info("\n*** test: %s", db_type)
+            self.configure({"sharing": {"type": db_type}})
+
+            path_mapped = "/owner/calendarPFP-" + db_type + ".ics/"
+            path_shared_r = "/user/calendarPFP-shared-by-owner-r-" + db_type + ".ics/"
+            self.mkcalendar(path_mapped, login="owner:ownerpw")
+
+            # check PROPFIND as owner
+            logging.info("\n*** PROPFIND collection owner -> ok")
+            _, responses = self.propfind(path_mapped, """\
+<?xml version="1.0" encoding="utf-8"?>
+<propfind xmlns="DAV:">
+    <prop>
+        <current-user-principal />
+    </prop>
+</propfind>""", login="owner:ownerpw")
+            logging.info("response: %r", responses)
+            response = responses[path_mapped]
+            assert not isinstance(response, int) and len(response) == 1
+            status, prop = response["D:current-user-principal"]
+            assert status == 200 and len(prop) == 1
+            element = prop.find(xmlutils.make_clark("D:href"))
+            assert element is not None and element.text == "/owner/"
+
+            # execute PROPPATCH as owner
+            logging.info("\n*** PROPPATCH collection owner -> ok")
+            _, responses = self.proppatch(path_mapped, """\
+<?xml version="1.0" encoding="utf-8"?>
+<D:propertyupdate xmlns:D="DAV:">
+  <D:set>
+    <D:prop>
+      <I:calendar-color xmlns:I="http://apple.com/ns/ical/">#AAAAAA</I:calendar-color>
+      <C:calendar-description xmlns:C="urn:ietf:params:xml:ns:caldav">ICAL-OWNER</C:calendar-description>
+    </D:prop>
+  </D:set>
+</D:propertyupdate>""", login="owner:ownerpw")
+            logging.info("response: %r", responses)
+            response = responses[path_mapped]
+            assert not isinstance(response, int) and len(response) == 2
+            status, prop = response["ICAL:calendar-color"]
+            assert status == 200 and not prop.text
+            status, prop = response["C:calendar-description"]
+            assert status == 200 and not prop.text
+
+            # verify PROPPATCH by owner
+            logging.info("\n*** PROPFIND collection owner -> ok")
+            propfind_calendar_color = get_file_content("propfind_multiple.xml")
+            _, responses = self.propfind(path_mapped, propfind_calendar_color, login="owner:ownerpw")
+            logging.info("response: %r", responses)
+            response = responses[path_mapped]
+            assert not isinstance(response, int)
+            status, prop = response["C:calendar-description"]
+            logging.debug("calendar-description: %r", prop.text)
+            assert status == 200 and prop.text == "ICAL-OWNER"
+            status, prop = response["ICAL:calendar-color"]
+            logging.debug("calendar-color: %r", prop.text)
+            assert status == 200 and prop.text == "#AAAAAA"
+
+            # create map
+            logging.info("\n*** create map user/owner:r -> ok")
+            json_dict = {}
+            json_dict['User'] = "user"
+            json_dict['PathMapped'] = path_mapped
+            json_dict['PathOrToken'] = path_shared_r
+            json_dict['Permissions'] = "rp"
+            json_dict['Enabled'] = "True"
+            json_dict['Hidden'] = "False"
+            _, headers, answer = self._sharing_api_json("map", "create", check=200, login="owner:ownerpw", json_dict=json_dict)
+            answer_dict = json.loads(answer)
+            assert answer_dict['Status'] == "success"
+
+            # enable map by user
+            logging.info("\n*** enable map by user")
+            json_dict = {}
+            json_dict['User'] = "user"
+            json_dict['PathMapped'] = path_mapped
+            json_dict['PathOrToken'] = path_shared_r
+            _, headers, answer = self._sharing_api_json("map", "enable", check=200, login="user:userpw", json_dict=json_dict)
+
+            # verify PROPPATCH as user
+            logging.info("\n*** PROPFIND collection user -> ok")
+            propfind_calendar_color = get_file_content("propfind_multiple.xml")
+            _, responses = self.propfind(path_mapped, propfind_calendar_color, login="owner:ownerpw")
+            logging.info("response: %r", responses)
+            response = responses[path_mapped]
+            assert not isinstance(response, int)
+            status, prop = response["C:calendar-description"]
+            logging.debug("calendar-description: %r", prop.text)
+            assert status == 200 and prop.text == "ICAL-OWNER"
+            status, prop = response["ICAL:calendar-color"]
+            logging.debug("calendar-color: %r", prop.text)
+            assert status == 200 and prop.text == "#AAAAAA"
+
+            # execute PROPPATCH as user
+            logging.info("\n*** PROPPATCH collection user -> ok")
+            _, responses = self.proppatch(path_shared_r, """\
+<?xml version="1.0" encoding="utf-8"?>
+<D:propertyupdate xmlns:D="DAV:">
+  <D:set>
+    <D:prop>
+      <I:calendar-color xmlns:I="http://apple.com/ns/ical/">#BBBBBB</I:calendar-color>
+      <C:calendar-description xmlns:C="urn:ietf:params:xml:ns:caldav">ICAL-USER</C:calendar-description>
+    </D:prop>
+  </D:set>
+</D:propertyupdate>""", login="user:userpw")
+            logging.info("response: %r", responses)
+            response = responses[path_shared_r]
+            assert not isinstance(response, int) and len(response) == 2
+            status, prop = response["ICAL:calendar-color"]
+            assert status == 200 and not prop.text
+            status, prop = response["C:calendar-description"]
+            assert status == 200 and not prop.text
+
+            logging.info("\n*** list (json->json)")
+            json_dict['PathOrToken'] = path_shared_r
+            _, headers, answer = self._sharing_api_json("map", "list", check=200, login="owner:ownerpw", json_dict=json_dict)
+            answer_dict = json.loads(answer)
+            assert answer_dict['Status'] == "success"
+            assert answer_dict['Lines'] == 1
+
+            logging.info("\n*** list (json->csv)")
+            json_dict['PathOrToken'] = path_shared_r
+            _, headers, answer = self._sharing_api_json("map", "list", check=200, login="owner:ownerpw", json_dict=json_dict, accept="text/csv")
+
+            logging.info("\n*** list (json->txt)")
+            json_dict['PathOrToken'] = path_shared_r
+            _, headers, answer = self._sharing_api_json("map", "list", check=200, login="owner:ownerpw", json_dict=json_dict, accept="text/plain")
+
+            # verify overlay as user
+            logging.info("\n*** PROPFIND collection user (overlay) -> ok")
+            propfind_calendar_color = get_file_content("propfind_multiple.xml")
+            _, responses = self.propfind(path_shared_r, propfind_calendar_color, login="user:userpw")
+            logging.info("response: %r", responses)
+            response = responses[path_shared_r]
+            assert not isinstance(response, int)
+            status, prop = response["C:calendar-description"]
+            logging.debug("calendar-description: %r", prop.text)
+            assert status == 200 and prop.text == "ICAL-USER"
+            status, prop = response["ICAL:calendar-color"]
+            logging.debug("calendar-color: %r", prop.text)
+            assert status == 200 and prop.text == "#BBBBBB"
+
+            # verify overlay not visible by owner
+            logging.info("\n*** PROPFIND collection owner -> ok")
+            propfind_calendar_color = get_file_content("propfind_multiple.xml")
+            _, responses = self.propfind(path_mapped, propfind_calendar_color, login="owner:ownerpw")
+            logging.info("response: %r", responses)
+            response = responses[path_mapped]
+            assert not isinstance(response, int)
+            status, prop = response["C:calendar-description"]
+            logging.debug("calendar-description: %r", prop.text)
+            assert status == 200 and prop.text == "ICAL-OWNER"
+            status, prop = response["ICAL:calendar-color"]
+            logging.debug("calendar-color: %r", prop.text)
+            assert status == 200 and prop.text == "#AAAAAA"
+
+            # execute PROPPATCH as user (delete color)
+            logging.info("\n*** PROPPATCH collection user (delete color) -> ok")
+            _, responses = self.proppatch(path_shared_r, """\
+<?xml version="1.0" encoding="utf-8"?>
+<D:propertyupdate xmlns:D="DAV:">
+  <D:remove>
+    <D:prop>
+      <I:calendar-color xmlns:I="http://apple.com/ns/ical/" />
+    </D:prop>
+  </D:remove>
+</D:propertyupdate>""", login="user:userpw")
+            logging.info("response: %r", responses)
+            response = responses[path_shared_r]
+            assert not isinstance(response, int) and len(response) == 1
+            status, prop = response["ICAL:calendar-color"]
+            assert status == 200 and not prop.text
+
+            # verify overlay as user
+            logging.info("\n*** PROPFIND collection user (overlay, color back to owner) -> ok")
+            propfind_calendar_color = get_file_content("propfind_multiple.xml")
+            _, responses = self.propfind(path_shared_r, propfind_calendar_color, login="user:userpw")
+            logging.info("response: %r", responses)
+            response = responses[path_shared_r]
+            assert not isinstance(response, int)
+            status, prop = response["C:calendar-description"]
+            logging.debug("calendar-description: %r", prop.text)
+            assert status == 200 and prop.text == "ICAL-USER"
+            status, prop = response["ICAL:calendar-color"]
+            logging.debug("calendar-color: %r", prop.text)
+            assert status == 200 and prop.text == "#AAAAAA"
+
+            # update map by owner
+            logging.info("\n*** update map by owner (disable property overlay)")
+            json_dict = {}
+            json_dict['User'] = "user"
+            json_dict['PathMapped'] = path_mapped
+            json_dict['PathOrToken'] = path_shared_r
+            json_dict['Permissions'] = "rwe"
+            json_dict['User'] = "user"
+            _, headers, answer = self._sharing_api_json("map", "update", check=200, login="owner:ownerpw", json_dict=json_dict)
+
+            # execute PROPPATCH as user
+            logging.info("\n*** PROPPATCH collection user (set color) -> ok")
+            _, responses = self.proppatch(path_shared_r, """\
+<?xml version="1.0" encoding="utf-8"?>
+<D:propertyupdate xmlns:D="DAV:">
+  <D:set>
+    <D:prop>
+      <I:calendar-color xmlns:I="http://apple.com/ns/ical/">#DDDDDD</I:calendar-color>
+    </D:prop>
+  </D:set>
+</D:propertyupdate>""", login="user:userpw")
+            logging.info("response: %r", responses)
+            response = responses[path_shared_r]
+            assert not isinstance(response, int) and len(response) == 1
+            status, prop = response["ICAL:calendar-color"]
+            assert status == 200 and not prop.text
+
+            # verify overlay as user
+            logging.info("\n*** PROPFIND collection user (overlay, color) -> ok")
+            propfind_calendar_color = get_file_content("propfind_multiple.xml")
+            _, responses = self.propfind(path_shared_r, propfind_calendar_color, login="user:userpw")
+            logging.info("response: %r", responses)
+            response = responses[path_shared_r]
+            assert not isinstance(response, int)
+            status, prop = response["ICAL:calendar-color"]
+            logging.debug("calendar-color: %r", prop.text)
+            assert status == 200 and prop.text == "#DDDDDD"
+
+            # verify overlay visible by owner
+            logging.info("\n*** PROPFIND collection owner (visible enforced change) -> ok")
+            propfind_calendar_color = get_file_content("propfind_multiple.xml")
+            _, responses = self.propfind(path_mapped, propfind_calendar_color, login="owner:ownerpw")
+            logging.info("response: %r", responses)
+            response = responses[path_mapped]
+            assert not isinstance(response, int)
+            status, prop = response["ICAL:calendar-color"]
+            logging.debug("calendar-color: %r", prop.text)
+            assert status == 200 and prop.text == "#DDDDDD"
+
+            # update map by owner
+            logging.info("\n*** update map by owner (enable property overlay)")
+            json_dict = {}
+            json_dict['User'] = "user"
+            json_dict['PathMapped'] = path_mapped
+            json_dict['PathOrToken'] = path_shared_r
+            json_dict['Permissions'] = "rwE"
+            json_dict['User'] = "user"
+            _, headers, answer = self._sharing_api_json("map", "update", check=200, login="owner:ownerpw", json_dict=json_dict)
+
+            # execute PROPPATCH as user
+            logging.info("\n*** PROPPATCH collection user (set color rw, enforce overlay enabled by default) -> ok")
+            _, responses = self.proppatch(path_shared_r, """\
+<?xml version="1.0" encoding="utf-8"?>
+<D:propertyupdate xmlns:D="DAV:">
+  <D:set>
+    <D:prop>
+      <I:calendar-color xmlns:I="http://apple.com/ns/ical/">#EEEEEE</I:calendar-color>
+    </D:prop>
+  </D:set>
+</D:propertyupdate>""", login="user:userpw")
+            logging.info("response: %r", responses)
+            response = responses[path_shared_r]
+            assert not isinstance(response, int) and len(response) == 1
+            status, prop = response["ICAL:calendar-color"]
+            assert status == 200 and not prop.text
+
+            # verify overlay visible by owner
+            logging.info("\n*** PROPFIND collection owner (invisible change) -> ok")
+            propfind_calendar_color = get_file_content("propfind_multiple.xml")
+            _, responses = self.propfind(path_mapped, propfind_calendar_color, login="owner:ownerpw")
+            logging.info("response: %r", responses)
+            response = responses[path_mapped]
+            assert not isinstance(response, int)
+            status, prop = response["ICAL:calendar-color"]
+            logging.debug("calendar-color: %r", prop.text)
+            assert status == 200 and prop.text == "#DDDDDD"
+
+            # verify overlay as user
+            logging.info("\n*** PROPFIND collection user (overlay, color) -> ok")
+            propfind_calendar_color = get_file_content("propfind_multiple.xml")
+            _, responses = self.propfind(path_shared_r, propfind_calendar_color, login="user:userpw")
+            logging.info("response: %r", responses)
+            response = responses[path_shared_r]
+            assert not isinstance(response, int)
+            status, prop = response["ICAL:calendar-color"]
+            logging.debug("calendar-color: %r", prop.text)
+            assert status == 200 and prop.text == "#EEEEEE"
+
+            # update map by owner
+            logging.info("\n*** update map by owner (enable property overlay)")
+            json_dict = {}
+            json_dict['User'] = "user"
+            json_dict['PathMapped'] = path_mapped
+            json_dict['PathOrToken'] = path_shared_r
+            json_dict['Permissions'] = "rwe"
+            json_dict['User'] = "user"
+            _, headers, answer = self._sharing_api_json("map", "update", check=200, login="owner:ownerpw", json_dict=json_dict)
+
+            # execute PROPPATCH as user
+            logging.info("\n*** PROPPATCH collection user (set color rwe, enforce overlay enabled by default) -> ok")
+            _, responses = self.proppatch(path_shared_r, """\
+<?xml version="1.0" encoding="utf-8"?>
+<D:propertyupdate xmlns:D="DAV:">
+  <D:set>
+    <D:prop>
+      <I:calendar-color xmlns:I="http://apple.com/ns/ical/">#EEEE00</I:calendar-color>
+    </D:prop>
+  </D:set>
+</D:propertyupdate>""", login="user:userpw")
+            logging.info("response: %r", responses)
+            response = responses[path_shared_r]
+            assert not isinstance(response, int) and len(response) == 1
+            status, prop = response["ICAL:calendar-color"]
+            assert status == 200 and not prop.text
+
+            # verify overlay visible by owner
+            logging.info("\n*** PROPFIND collection owner (visible change) -> ok")
+            propfind_calendar_color = get_file_content("propfind_multiple.xml")
+            _, responses = self.propfind(path_mapped, propfind_calendar_color, login="owner:ownerpw")
+            logging.info("response: %r", responses)
+            response = responses[path_mapped]
+            assert not isinstance(response, int)
+            status, prop = response["ICAL:calendar-color"]
+            logging.debug("calendar-color: %r", prop.text)
+            assert status == 200 and prop.text == "#EEEE00"
+
+            self.configure({"sharing": {"enforce_properties_overlay": False}})
+
+            # update map by owner
+            logging.info("\n*** update map by owner (enable property overlay)")
+            json_dict = {}
+            json_dict['User'] = "user"
+            json_dict['PathMapped'] = path_mapped
+            json_dict['PathOrToken'] = path_shared_r
+            json_dict['Permissions'] = "rw"
+            json_dict['User'] = "user"
+            _, headers, answer = self._sharing_api_json("map", "update", check=200, login="owner:ownerpw", json_dict=json_dict)
+
+            logging.info("\n*** PROPPATCH collection user (set color rwe but enforce disabled) -> ok")
+            _, responses = self.proppatch(path_shared_r, """\
+<?xml version="1.0" encoding="utf-8"?>
+<D:propertyupdate xmlns:D="DAV:">
+  <D:set>
+    <D:prop>
+      <I:calendar-color xmlns:I="http://apple.com/ns/ical/">#FFFFFF</I:calendar-color>
+    </D:prop>
+  </D:set>
+</D:propertyupdate>""", login="user:userpw")
+            logging.info("response: %r", responses)
+            response = responses[path_shared_r]
+            assert not isinstance(response, int) and len(response) == 1
+            status, prop = response["ICAL:calendar-color"]
+            assert status == 200 and not prop.text
+
+            # verify visible by owner
+            logging.info("\n*** PROPFIND collection owner (visible change) -> ok")
+            propfind_calendar_color = get_file_content("propfind_multiple.xml")
+            _, responses = self.propfind(path_mapped, propfind_calendar_color, login="owner:ownerpw")
+            logging.info("response: %r", responses)
+            response = responses[path_mapped]
+            assert not isinstance(response, int)
+            status, prop = response["ICAL:calendar-color"]
+            logging.debug("calendar-color: %r", prop.text)
+            assert status == 200 and prop.text == "#FFFFFF"