400 lines
		
	
	
		
			14 KiB
		
	
	
	
		
			Python
		
	
	
			
		
		
	
	
			400 lines
		
	
	
		
			14 KiB
		
	
	
	
		
			Python
		
	
	
# Copyright 2014-2016 OpenMarket Ltd
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# Copyright 2019 New Vector Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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#     http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import logging
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import os
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import sys
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from typing import Dict, Iterable, List
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from twisted.internet.tcp import Port
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from twisted.web.resource import EncodingResourceWrapper, Resource
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from twisted.web.server import GzipEncoderFactory
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import synapse
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import synapse.config.logger
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from synapse import events
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from synapse.api.urls import (
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    CLIENT_API_PREFIX,
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    FEDERATION_PREFIX,
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    LEGACY_MEDIA_PREFIX,
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    MEDIA_R0_PREFIX,
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    MEDIA_V3_PREFIX,
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    SERVER_KEY_PREFIX,
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    STATIC_PREFIX,
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)
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from synapse.app import _base
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from synapse.app._base import (
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    handle_startup_exception,
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    listen_http,
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    max_request_body_size,
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    redirect_stdio_to_logs,
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    register_start,
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)
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from synapse.config._base import ConfigError, format_config_error
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from synapse.config.homeserver import HomeServerConfig
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from synapse.config.server import ListenerConfig, TCPListenerConfig
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from synapse.federation.transport.server import TransportLayerServer
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from synapse.http.additional_resource import AdditionalResource
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from synapse.http.server import (
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    OptionsResource,
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    RootOptionsRedirectResource,
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    StaticResource,
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)
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from synapse.logging.context import LoggingContext
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from synapse.metrics import METRICS_PREFIX, MetricsResource, RegistryProxy
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from synapse.replication.http import REPLICATION_PREFIX, ReplicationRestResource
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from synapse.rest import ClientRestResource
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from synapse.rest.admin import AdminRestResource
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from synapse.rest.health import HealthResource
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from synapse.rest.key.v2 import KeyResource
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from synapse.rest.synapse.client import build_synapse_client_resource_tree
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from synapse.rest.well_known import well_known_resource
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from synapse.server import HomeServer
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from synapse.storage import DataStore
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from synapse.util.check_dependencies import VERSION, check_requirements
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from synapse.util.httpresourcetree import create_resource_tree
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from synapse.util.module_loader import load_module
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logger = logging.getLogger("synapse.app.homeserver")
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def gz_wrap(r: Resource) -> Resource:
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    return EncodingResourceWrapper(r, [GzipEncoderFactory()])
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class SynapseHomeServer(HomeServer):
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    DATASTORE_CLASS = DataStore  # type: ignore
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    def _listener_http(
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        self,
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        config: HomeServerConfig,
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        listener_config: ListenerConfig,
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    ) -> Iterable[Port]:
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        # Must exist since this is an HTTP listener.
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        assert listener_config.http_options is not None
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        site_tag = listener_config.get_site_tag()
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        # We always include a health resource.
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        resources: Dict[str, Resource] = {"/health": HealthResource()}
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        for res in listener_config.http_options.resources:
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            for name in res.names:
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                if name == "openid" and "federation" in res.names:
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                    # Skip loading openid resource if federation is defined
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                    # since federation resource will include openid
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                    continue
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                if name == "health":
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                    # Skip loading, health resource is always included
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                    continue
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                resources.update(self._configure_named_resource(name, res.compress))
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        additional_resources = listener_config.http_options.additional_resources
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        logger.debug("Configuring additional resources: %r", additional_resources)
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        module_api = self.get_module_api()
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        for path, resmodule in additional_resources.items():
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            handler_cls, config = load_module(
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                resmodule,
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                ("listeners", site_tag, "additional_resources", "<%s>" % (path,)),
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            )
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            handler = handler_cls(config, module_api)
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            if isinstance(handler, Resource):
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                resource = handler
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            elif hasattr(handler, "handle_request"):
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                resource = AdditionalResource(self, handler.handle_request)
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            else:
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                raise ConfigError(
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                    "additional_resource %s does not implement a known interface"
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                    % (resmodule["module"],)
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                )
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            resources[path] = resource
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        # Attach additional resources registered by modules.
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        resources.update(self._module_web_resources)
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        self._module_web_resources_consumed = True
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        # Try to find something useful to serve at '/':
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        #
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        # 1. Redirect to the web client if it is an HTTP(S) URL.
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        # 2. Redirect to the static "Synapse is running" page.
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        # 3. Do not redirect and use a blank resource.
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        if self.config.server.web_client_location:
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            root_resource: Resource = RootOptionsRedirectResource(
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                self.config.server.web_client_location
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            )
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        elif STATIC_PREFIX in resources:
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            root_resource = RootOptionsRedirectResource(STATIC_PREFIX)
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        else:
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            root_resource = OptionsResource()
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        ports = listen_http(
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            self,
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            listener_config,
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            create_resource_tree(resources, root_resource),
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            self.version_string,
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            max_request_body_size(self.config),
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            self.tls_server_context_factory,
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            reactor=self.get_reactor(),
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        )
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        return ports
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    def _configure_named_resource(
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        self, name: str, compress: bool = False
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    ) -> Dict[str, Resource]:
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        """Build a resource map for a named resource
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        Args:
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            name: named resource: one of "client", "federation", etc
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            compress: whether to enable gzip compression for this resource
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        Returns:
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            map from path to HTTP resource
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        """
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        resources: Dict[str, Resource] = {}
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        if name == "client":
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            client_resource: Resource = ClientRestResource(self)
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            if compress:
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                client_resource = gz_wrap(client_resource)
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            resources.update(
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                {
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                    CLIENT_API_PREFIX: client_resource,
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                    "/.well-known": well_known_resource(self),
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                    "/_synapse/admin": AdminRestResource(self),
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                    **build_synapse_client_resource_tree(self),
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                }
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            )
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            if self.config.email.can_verify_email:
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                from synapse.rest.synapse.client.password_reset import (
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                    PasswordResetSubmitTokenResource,
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                )
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                resources[
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                    "/_synapse/client/password_reset/email/submit_token"
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                ] = PasswordResetSubmitTokenResource(self)
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        if name == "consent":
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            from synapse.rest.consent.consent_resource import ConsentResource
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            consent_resource: Resource = ConsentResource(self)
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            if compress:
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                consent_resource = gz_wrap(consent_resource)
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            resources["/_matrix/consent"] = consent_resource
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        if name == "federation":
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            federation_resource: Resource = TransportLayerServer(self)
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            if compress:
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                federation_resource = gz_wrap(federation_resource)
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            resources[FEDERATION_PREFIX] = federation_resource
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        if name == "openid":
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            resources[FEDERATION_PREFIX] = TransportLayerServer(
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                self, servlet_groups=["openid"]
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            )
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        if name in ["static", "client"]:
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            resources[STATIC_PREFIX] = StaticResource(
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                os.path.join(os.path.dirname(synapse.__file__), "static")
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            )
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        if name in ["media", "federation", "client"]:
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            if self.config.server.enable_media_repo:
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                media_repo = self.get_media_repository_resource()
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                resources.update(
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                    {
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                        MEDIA_R0_PREFIX: media_repo,
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                        MEDIA_V3_PREFIX: media_repo,
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                        LEGACY_MEDIA_PREFIX: media_repo,
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                    }
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                )
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            elif name == "media":
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                raise ConfigError(
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                    "'media' resource conflicts with enable_media_repo=False"
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                )
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        if name in ["keys", "federation"]:
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            resources[SERVER_KEY_PREFIX] = KeyResource(self)
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        if name == "metrics" and self.config.metrics.enable_metrics:
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            metrics_resource: Resource = MetricsResource(RegistryProxy)
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            if compress:
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                metrics_resource = gz_wrap(metrics_resource)
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            resources[METRICS_PREFIX] = metrics_resource
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        if name == "replication":
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            resources[REPLICATION_PREFIX] = ReplicationRestResource(self)
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        return resources
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    def start_listening(self) -> None:
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        if self.config.redis.redis_enabled:
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            # If redis is enabled we connect via the replication command handler
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            # in the same way as the workers (since we're effectively a client
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            # rather than a server).
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            self.get_replication_command_handler().start_replication(self)
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        for listener in self.config.server.listeners:
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            if listener.type == "http":
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                self._listening_services.extend(
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                    self._listener_http(self.config, listener)
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                )
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            elif listener.type == "manhole":
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                if isinstance(listener, TCPListenerConfig):
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                    _base.listen_manhole(
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                        listener.bind_addresses,
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                        listener.port,
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                        manhole_settings=self.config.server.manhole_settings,
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                        manhole_globals={"hs": self},
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                    )
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                else:
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                    raise ConfigError(
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                        "Can not use a unix socket for manhole at this time."
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                    )
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            elif listener.type == "metrics":
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                if not self.config.metrics.enable_metrics:
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                    logger.warning(
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                        "Metrics listener configured, but "
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                        "enable_metrics is not True!"
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                    )
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                else:
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                    if isinstance(listener, TCPListenerConfig):
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                        _base.listen_metrics(
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                            listener.bind_addresses,
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                            listener.port,
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                        )
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                    else:
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                        raise ConfigError(
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                            "Can not use a unix socket for metrics at this time."
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                        )
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            else:
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                # this shouldn't happen, as the listener type should have been checked
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                # during parsing
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                logger.warning("Unrecognized listener type: %s", listener.type)
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def setup(config_options: List[str]) -> SynapseHomeServer:
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    """
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    Args:
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        config_options_options: The options passed to Synapse. Usually `sys.argv[1:]`.
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    Returns:
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        A homeserver instance.
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    """
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    try:
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        config = HomeServerConfig.load_or_generate_config(
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            "Synapse Homeserver", config_options
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        )
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    except ConfigError as e:
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        sys.stderr.write("\n")
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        for f in format_config_error(e):
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            sys.stderr.write(f)
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        sys.stderr.write("\n")
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        sys.exit(1)
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    if not config:
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        # If a config isn't returned, and an exception isn't raised, we're just
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        # generating config files and shouldn't try to continue.
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        sys.exit(0)
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    if config.worker.worker_app:
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        raise ConfigError(
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            "You have specified `worker_app` in the config but are attempting to start a non-worker "
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            "instance. Please use `python -m synapse.app.generic_worker` instead (or remove the option if this is the main process)."
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        )
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        sys.exit(1)
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    events.USE_FROZEN_DICTS = config.server.use_frozen_dicts
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    synapse.util.caches.TRACK_MEMORY_USAGE = config.caches.track_memory_usage
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    if config.server.gc_seconds:
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        synapse.metrics.MIN_TIME_BETWEEN_GCS = config.server.gc_seconds
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    if (
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        config.registration.enable_registration
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        and not config.registration.enable_registration_without_verification
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    ):
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        if (
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            not config.captcha.enable_registration_captcha
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            and not config.registration.registrations_require_3pid
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            and not config.registration.registration_requires_token
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        ):
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            raise ConfigError(
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                "You have enabled open registration without any verification. This is a known vector for "
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                "spam and abuse. If you would like to allow public registration, please consider adding email, "
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                "captcha, or token-based verification. Otherwise this check can be removed by setting the "
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                "`enable_registration_without_verification` config option to `true`."
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            )
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    hs = SynapseHomeServer(
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        config.server.server_name,
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        config=config,
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        version_string=f"Synapse/{VERSION}",
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    )
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    synapse.config.logger.setup_logging(hs, config, use_worker_options=False)
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    logger.info("Setting up server")
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    try:
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        hs.setup()
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    except Exception as e:
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        handle_startup_exception(e)
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    async def start() -> None:
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        # Load the OIDC provider metadatas, if OIDC is enabled.
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        if hs.config.oidc.oidc_enabled:
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            oidc = hs.get_oidc_handler()
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            # Loading the provider metadata also ensures the provider config is valid.
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            await oidc.load_metadata()
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        await _base.start(hs)
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        hs.get_datastores().main.db_pool.updates.start_doing_background_updates()
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    register_start(start)
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    return hs
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def run(hs: HomeServer) -> None:
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    _base.start_reactor(
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        "synapse-homeserver",
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        soft_file_limit=hs.config.server.soft_file_limit,
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        gc_thresholds=hs.config.server.gc_thresholds,
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        pid_file=hs.config.server.pid_file,
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        daemonize=hs.config.server.daemonize,
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        print_pidfile=hs.config.server.print_pidfile,
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        logger=logger,
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    )
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def main() -> None:
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    with LoggingContext("main"):
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        # check base requirements
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        check_requirements()
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        hs = setup(sys.argv[1:])
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        # redirect stdio to the logs, if configured.
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        if not hs.config.logging.no_redirect_stdio:
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            redirect_stdio_to_logs()
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        run(hs)
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if __name__ == "__main__":
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    main()
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