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-rw-r--r--synapse/__init__.py2
-rw-r--r--synapse/config/_base.py17
-rw-r--r--synapse/config/federation.py10
-rw-r--r--synapse/config/server.py14
-rw-r--r--synapse/config/user_directory.py9
-rw-r--r--synapse/federation/sender/__init__.py2
-rw-r--r--synapse/federation/transport/server.py7
-rw-r--r--synapse/handlers/message.py8
-rw-r--r--synapse/handlers/presence.py56
-rw-r--r--synapse/handlers/profile.py9
-rw-r--r--synapse/replication/http/federation.py3
-rw-r--r--synapse/res/templates/sso_auth_account_details.html2
-rw-r--r--synapse/rest/synapse/client/__init__.py6
-rw-r--r--synapse/storage/databases/main/user_directory.py59
14 files changed, 165 insertions, 39 deletions
diff --git a/synapse/__init__.py b/synapse/__init__.py
index 359276427f..2e70f46186 100644
--- a/synapse/__init__.py
+++ b/synapse/__init__.py
@@ -48,7 +48,7 @@ try:
 except ImportError:
     pass
 
-__version__ = "1.27.0"
+__version__ = "1.28.0rc1"
 
 if bool(os.environ.get("SYNAPSE_TEST_PATCH_LOG_CONTEXTS", False)):
     # We import here so that we don't have to install a bunch of deps when
diff --git a/synapse/config/_base.py b/synapse/config/_base.py
index 97399eb9ba..e89decda34 100644
--- a/synapse/config/_base.py
+++ b/synapse/config/_base.py
@@ -21,7 +21,7 @@ import os
 from collections import OrderedDict
 from hashlib import sha256
 from textwrap import dedent
-from typing import Any, Iterable, List, MutableMapping, Optional
+from typing import Any, Iterable, List, MutableMapping, Optional, Union
 
 import attr
 import jinja2
@@ -147,7 +147,20 @@ class Config:
         return int(value) * size
 
     @staticmethod
-    def parse_duration(value):
+    def parse_duration(value: Union[str, int]) -> int:
+        """Convert a duration as a string or integer to a number of milliseconds.
+
+        If an integer is provided it is treated as milliseconds and is unchanged.
+
+        String durations can have a suffix of 's', 'm', 'h', 'd', 'w', or 'y'.
+        No suffix is treated as milliseconds.
+
+        Args:
+            value: The duration to parse.
+
+        Returns:
+            The number of milliseconds in the duration.
+        """
         if isinstance(value, int):
             return value
         second = 1000
diff --git a/synapse/config/federation.py b/synapse/config/federation.py
index 9f3c57e6a1..55e4db5442 100644
--- a/synapse/config/federation.py
+++ b/synapse/config/federation.py
@@ -41,6 +41,10 @@ class FederationConfig(Config):
         )
         self.federation_metrics_domains = set(federation_metrics_domains)
 
+        self.allow_profile_lookup_over_federation = config.get(
+            "allow_profile_lookup_over_federation", True
+        )
+
     def generate_config_section(self, config_dir_path, server_name, **kwargs):
         return """\
         ## Federation ##
@@ -66,6 +70,12 @@ class FederationConfig(Config):
         #federation_metrics_domains:
         #  - matrix.org
         #  - example.com
+
+        # Uncomment to disable profile lookup over federation. By default, the
+        # Federation API allows other homeservers to obtain profile data of any user
+        # on this homeserver. Defaults to 'true'.
+        #
+        #allow_profile_lookup_over_federation: false
         """
 
 
diff --git a/synapse/config/server.py b/synapse/config/server.py
index 6f3325ff81..0bfd4398e2 100644
--- a/synapse/config/server.py
+++ b/synapse/config/server.py
@@ -263,6 +263,12 @@ class ServerConfig(Config):
             False,
         )
 
+        # Whether to retrieve and display profile data for a user when they
+        # are invited to a room
+        self.include_profile_data_on_invite = config.get(
+            "include_profile_data_on_invite", True
+        )
+
         if "restrict_public_rooms_to_local_users" in config and (
             "allow_public_rooms_without_auth" in config
             or "allow_public_rooms_over_federation" in config
@@ -848,6 +854,14 @@ class ServerConfig(Config):
         #
         #limit_profile_requests_to_users_who_share_rooms: true
 
+        # Uncomment to prevent a user's profile data from being retrieved and
+        # displayed in a room until they have joined it. By default, a user's
+        # profile data is included in an invite event, regardless of the values
+        # of the above two settings, and whether or not the users share a server.
+        # Defaults to 'true'.
+        #
+        #include_profile_data_on_invite: false
+
         # If set to 'true', removes the need for authentication to access the server's
         # public rooms directory through the client API, meaning that anyone can
         # query the room directory. Defaults to 'false'.
diff --git a/synapse/config/user_directory.py b/synapse/config/user_directory.py
index c8d19c5d6b..89dbebd148 100644
--- a/synapse/config/user_directory.py
+++ b/synapse/config/user_directory.py
@@ -26,6 +26,7 @@ class UserDirectoryConfig(Config):
     def read_config(self, config, **kwargs):
         self.user_directory_search_enabled = True
         self.user_directory_search_all_users = False
+        self.user_directory_search_prefer_local_users = False
         user_directory_config = config.get("user_directory", None)
         if user_directory_config:
             self.user_directory_search_enabled = user_directory_config.get(
@@ -34,6 +35,9 @@ class UserDirectoryConfig(Config):
             self.user_directory_search_all_users = user_directory_config.get(
                 "search_all_users", False
             )
+            self.user_directory_search_prefer_local_users = user_directory_config.get(
+                "prefer_local_users", False
+            )
 
     def generate_config_section(self, config_dir_path, server_name, **kwargs):
         return """
@@ -49,7 +53,12 @@ class UserDirectoryConfig(Config):
         # rebuild the user_directory search indexes, see
         # https://github.com/matrix-org/synapse/blob/master/docs/user_directory.md
         #
+        # 'prefer_local_users' defines whether to prioritise local users in
+        # search query results. If True, local users are more likely to appear above
+        # remote users when searching the user directory. Defaults to false.
+        #
         #user_directory:
         #  enabled: true
         #  search_all_users: false
+        #  prefer_local_users: false
         """
diff --git a/synapse/federation/sender/__init__.py b/synapse/federation/sender/__init__.py
index 97fc4d0a82..24ebc4b803 100644
--- a/synapse/federation/sender/__init__.py
+++ b/synapse/federation/sender/__init__.py
@@ -474,7 +474,7 @@ class FederationSender:
             self._processing_pending_presence = False
 
     def send_presence_to_destinations(
-        self, states: List[UserPresenceState], destinations: List[str]
+        self, states: Iterable[UserPresenceState], destinations: Iterable[str]
     ) -> None:
         """Send the given presence states to the given destinations.
         destinations (list[str])
diff --git a/synapse/federation/transport/server.py b/synapse/federation/transport/server.py
index cce83704d4..2cf935f38d 100644
--- a/synapse/federation/transport/server.py
+++ b/synapse/federation/transport/server.py
@@ -484,10 +484,9 @@ class FederationQueryServlet(BaseFederationServlet):
 
     # This is when we receive a server-server Query
     async def on_GET(self, origin, content, query, query_type):
-        return await self.handler.on_query_request(
-            query_type,
-            {k.decode("utf8"): v[0].decode("utf-8") for k, v in query.items()},
-        )
+        args = {k.decode("utf8"): v[0].decode("utf-8") for k, v in query.items()}
+        args["origin"] = origin
+        return await self.handler.on_query_request(query_type, args)
 
 
 class FederationMakeJoinServlet(BaseFederationServlet):
diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py
index c03f6c997b..1b7c065b34 100644
--- a/synapse/handlers/message.py
+++ b/synapse/handlers/message.py
@@ -387,6 +387,12 @@ class EventCreationHandler:
 
         self.room_invite_state_types = self.hs.config.room_invite_state_types
 
+        self.membership_types_to_include_profile_data_in = (
+            {Membership.JOIN, Membership.INVITE}
+            if self.hs.config.include_profile_data_on_invite
+            else {Membership.JOIN}
+        )
+
         self.send_event = ReplicationSendEventRestServlet.make_client(hs)
 
         # This is only used to get at ratelimit function, and maybe_kick_guest_users
@@ -500,7 +506,7 @@ class EventCreationHandler:
             membership = builder.content.get("membership", None)
             target = UserID.from_string(builder.state_key)
 
-            if membership in {Membership.JOIN, Membership.INVITE}:
+            if membership in self.membership_types_to_include_profile_data_in:
                 # If event doesn't include a display name, add one.
                 profile = self.profile_handler
                 content = builder.content
diff --git a/synapse/handlers/presence.py b/synapse/handlers/presence.py
index fb85b19770..b6a9ce4f38 100644
--- a/synapse/handlers/presence.py
+++ b/synapse/handlers/presence.py
@@ -849,6 +849,9 @@ class PresenceHandler(BasePresenceHandler):
         """Process current state deltas to find new joins that need to be
         handled.
         """
+        # A map of destination to a set of user state that they should receive
+        presence_destinations = {}  # type: Dict[str, Set[UserPresenceState]]
+
         for delta in deltas:
             typ = delta["type"]
             state_key = delta["state_key"]
@@ -858,6 +861,7 @@ class PresenceHandler(BasePresenceHandler):
 
             logger.debug("Handling: %r %r, %s", typ, state_key, event_id)
 
+            # Drop any event that isn't a membership join
             if typ != EventTypes.Member:
                 continue
 
@@ -880,13 +884,38 @@ class PresenceHandler(BasePresenceHandler):
                     # Ignore changes to join events.
                     continue
 
-            await self._on_user_joined_room(room_id, state_key)
+            # Retrieve any user presence state updates that need to be sent as a result,
+            # and the destinations that need to receive it
+            destinations, user_presence_states = await self._on_user_joined_room(
+                room_id, state_key
+            )
+
+            # Insert the destinations and respective updates into our destinations dict
+            for destination in destinations:
+                presence_destinations.setdefault(destination, set()).update(
+                    user_presence_states
+                )
+
+        # Send out user presence updates for each destination
+        for destination, user_state_set in presence_destinations.items():
+            self.federation.send_presence_to_destinations(
+                destinations=[destination], states=user_state_set
+            )
 
-    async def _on_user_joined_room(self, room_id: str, user_id: str) -> None:
+    async def _on_user_joined_room(
+        self, room_id: str, user_id: str
+    ) -> Tuple[List[str], List[UserPresenceState]]:
         """Called when we detect a user joining the room via the current state
-        delta stream.
-        """
+        delta stream. Returns the destinations that need to be updated and the
+        presence updates to send to them.
+
+        Args:
+            room_id: The ID of the room that the user has joined.
+            user_id: The ID of the user that has joined the room.
 
+        Returns:
+            A tuple of destinations and presence updates to send to them.
+        """
         if self.is_mine_id(user_id):
             # If this is a local user then we need to send their presence
             # out to hosts in the room (who don't already have it)
@@ -894,15 +923,15 @@ class PresenceHandler(BasePresenceHandler):
             # TODO: We should be able to filter the hosts down to those that
             # haven't previously seen the user
 
-            state = await self.current_state_for_user(user_id)
-            hosts = await self.state.get_current_hosts_in_room(room_id)
+            remote_hosts = await self.state.get_current_hosts_in_room(room_id)
 
             # Filter out ourselves.
-            hosts = {host for host in hosts if host != self.server_name}
+            filtered_remote_hosts = [
+                host for host in remote_hosts if host != self.server_name
+            ]
 
-            self.federation.send_presence_to_destinations(
-                states=[state], destinations=hosts
-            )
+            state = await self.current_state_for_user(user_id)
+            return filtered_remote_hosts, [state]
         else:
             # A remote user has joined the room, so we need to:
             #   1. Check if this is a new server in the room
@@ -915,6 +944,8 @@ class PresenceHandler(BasePresenceHandler):
             # TODO: Check that this is actually a new server joining the
             # room.
 
+            remote_host = get_domain_from_id(user_id)
+
             users = await self.state.get_current_users_in_room(room_id)
             user_ids = list(filter(self.is_mine_id, users))
 
@@ -934,10 +965,7 @@ class PresenceHandler(BasePresenceHandler):
                 or state.status_msg is not None
             ]
 
-            if states:
-                self.federation.send_presence_to_destinations(
-                    states=states, destinations=[get_domain_from_id(user_id)]
-                )
+            return [remote_host], states
 
 
 def should_notify(old_state, new_state):
diff --git a/synapse/handlers/profile.py b/synapse/handlers/profile.py
index 2f62d84fb5..dd59392bda 100644
--- a/synapse/handlers/profile.py
+++ b/synapse/handlers/profile.py
@@ -310,6 +310,15 @@ class ProfileHandler(BaseHandler):
         await self._update_join_states(requester, target_user)
 
     async def on_profile_query(self, args: JsonDict) -> JsonDict:
+        """Handles federation profile query requests."""
+
+        if not self.hs.config.allow_profile_lookup_over_federation:
+            raise SynapseError(
+                403,
+                "Profile lookup over federation is disabled on this homeserver",
+                Codes.FORBIDDEN,
+            )
+
         user = UserID.from_string(args["user_id"])
         if not self.hs.is_mine(user):
             raise SynapseError(400, "User is not hosted on this homeserver")
diff --git a/synapse/replication/http/federation.py b/synapse/replication/http/federation.py
index 7a0dbb5b1a..8af53b4f28 100644
--- a/synapse/replication/http/federation.py
+++ b/synapse/replication/http/federation.py
@@ -213,8 +213,9 @@ class ReplicationGetQueryRestServlet(ReplicationEndpoint):
             content = parse_json_object_from_request(request)
 
             args = content["args"]
+            args["origin"] = content["origin"]
 
-        logger.info("Got %r query", query_type)
+        logger.info("Got %r query from %s", query_type, args["origin"])
 
         result = await self.registry.on_query(query_type, args)
 
diff --git a/synapse/res/templates/sso_auth_account_details.html b/synapse/res/templates/sso_auth_account_details.html
index f4fdc40b22..00e1dcdbb8 100644
--- a/synapse/res/templates/sso_auth_account_details.html
+++ b/synapse/res/templates/sso_auth_account_details.html
@@ -145,7 +145,7 @@
         <input type="submit" value="Continue" class="primary-button">
         {% if user_attributes.avatar_url or user_attributes.display_name or user_attributes.emails %}
         <section class="idp-pick-details">
-          <h2><img src="{{ idp.idp_icon | mxc_to_http(24, 24) }}"/>Information from {{ idp.idp_name }}</h2>
+          <h2>{% if idp.idp_icon %}<img src="{{ idp.idp_icon | mxc_to_http(24, 24) }}"/>{% endif %}Information from {{ idp.idp_name }}</h2>
           {% if user_attributes.avatar_url %}
           <label class="idp-detail idp-avatar" for="idp-avatar">
             <div class="check-row">
diff --git a/synapse/rest/synapse/client/__init__.py b/synapse/rest/synapse/client/__init__.py
index e5ef515090..8588b6d271 100644
--- a/synapse/rest/synapse/client/__init__.py
+++ b/synapse/rest/synapse/client/__init__.py
@@ -54,11 +54,7 @@ def build_synapse_client_resource_tree(hs: "HomeServer") -> Mapping[str, Resourc
     if hs.config.saml2_enabled:
         from synapse.rest.synapse.client.saml2 import SAML2Resource
 
-        res = SAML2Resource(hs)
-        resources["/_synapse/client/saml2"] = res
-
-        # This is also mounted under '/_matrix' for backwards-compatibility.
-        resources["/_matrix/saml2"] = res
+        resources["/_synapse/client/saml2"] = SAML2Resource(hs)
 
     return resources
 
diff --git a/synapse/storage/databases/main/user_directory.py b/synapse/storage/databases/main/user_directory.py
index 63f88eac51..02ee15676c 100644
--- a/synapse/storage/databases/main/user_directory.py
+++ b/synapse/storage/databases/main/user_directory.py
@@ -556,6 +556,11 @@ class UserDirectoryStore(UserDirectoryBackgroundUpdateStore):
     def __init__(self, database: DatabasePool, db_conn, hs):
         super().__init__(database, db_conn, hs)
 
+        self._prefer_local_users_in_search = (
+            hs.config.user_directory_search_prefer_local_users
+        )
+        self._server_name = hs.config.server_name
+
     async def remove_from_user_dir(self, user_id: str) -> None:
         def _remove_from_user_dir_txn(txn):
             self.db_pool.simple_delete_txn(
@@ -754,9 +759,24 @@ class UserDirectoryStore(UserDirectoryBackgroundUpdateStore):
                 )
             """
 
+        # We allow manipulating the ranking algorithm by injecting statements
+        # based on config options.
+        additional_ordering_statements = []
+        ordering_arguments = ()
+
         if isinstance(self.database_engine, PostgresEngine):
             full_query, exact_query, prefix_query = _parse_query_postgres(search_term)
 
+            # If enabled, this config option will rank local users higher than those on
+            # remote instances.
+            if self._prefer_local_users_in_search:
+                # This statement checks whether a given user's user ID contains a server name
+                # that matches the local server
+                statement = "* (CASE WHEN user_id LIKE ? THEN 2.0 ELSE 1.0 END)"
+                additional_ordering_statements.append(statement)
+
+                ordering_arguments += ("%:" + self._server_name,)
+
             # We order by rank and then if they have profile info
             # The ranking algorithm is hand tweaked for "best" results. Broadly
             # the idea is we give a higher weight to exact matches.
@@ -767,7 +787,7 @@ class UserDirectoryStore(UserDirectoryBackgroundUpdateStore):
                 FROM user_directory_search as t
                 INNER JOIN user_directory AS d USING (user_id)
                 WHERE
-                    %s
+                    %(where_clause)s
                     AND vector @@ to_tsquery('simple', ?)
                 ORDER BY
                     (CASE WHEN d.user_id IS NOT NULL THEN 4.0 ELSE 1.0 END)
@@ -787,33 +807,54 @@ class UserDirectoryStore(UserDirectoryBackgroundUpdateStore):
                             8
                         )
                     )
+                    %(order_case_statements)s
                     DESC,
                     display_name IS NULL,
                     avatar_url IS NULL
                 LIMIT ?
-            """ % (
-                where_clause,
+            """ % {
+                "where_clause": where_clause,
+                "order_case_statements": " ".join(additional_ordering_statements),
+            }
+            args = (
+                join_args
+                + (full_query, exact_query, prefix_query)
+                + ordering_arguments
+                + (limit + 1,)
             )
-            args = join_args + (full_query, exact_query, prefix_query, limit + 1)
         elif isinstance(self.database_engine, Sqlite3Engine):
             search_query = _parse_query_sqlite(search_term)
 
+            # If enabled, this config option will rank local users higher than those on
+            # remote instances.
+            if self._prefer_local_users_in_search:
+                # This statement checks whether a given user's user ID contains a server name
+                # that matches the local server
+                #
+                # Note that we need to include a comma at the end for valid SQL
+                statement = "user_id LIKE ? DESC,"
+                additional_ordering_statements.append(statement)
+
+                ordering_arguments += ("%:" + self._server_name,)
+
             sql = """
                 SELECT d.user_id AS user_id, display_name, avatar_url
                 FROM user_directory_search as t
                 INNER JOIN user_directory AS d USING (user_id)
                 WHERE
-                    %s
+                    %(where_clause)s
                     AND value MATCH ?
                 ORDER BY
                     rank(matchinfo(user_directory_search)) DESC,
+                    %(order_statements)s
                     display_name IS NULL,
                     avatar_url IS NULL
                 LIMIT ?
-            """ % (
-                where_clause,
-            )
-            args = join_args + (search_query, limit + 1)
+            """ % {
+                "where_clause": where_clause,
+                "order_statements": " ".join(additional_ordering_statements),
+            }
+            args = join_args + (search_query,) + ordering_arguments + (limit + 1,)
         else:
             # This should be unreachable.
             raise Exception("Unrecognized database engine")