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-rw-r--r--synapse/app/__init__.py25
-rw-r--r--synapse/app/_base.py100
-rw-r--r--synapse/app/appservice.py7
-rw-r--r--synapse/app/client_reader.py13
-rw-r--r--synapse/app/event_creator.py13
-rw-r--r--synapse/app/federation_reader.py13
-rw-r--r--synapse/app/federation_sender.py16
-rw-r--r--synapse/app/frontend_proxy.py13
-rwxr-xr-xsynapse/app/homeserver.py71
-rw-r--r--synapse/app/media_repository.py13
-rw-r--r--synapse/app/pusher.py3
-rw-r--r--synapse/app/synchrotron.py7
-rw-r--r--synapse/app/user_dir.py17
13 files changed, 170 insertions, 141 deletions
diff --git a/synapse/app/__init__.py b/synapse/app/__init__.py
index b45adafdd3..f56f5fcc13 100644
--- a/synapse/app/__init__.py
+++ b/synapse/app/__init__.py
@@ -12,15 +12,38 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-
+import logging
 import sys
 
 from synapse import python_dependencies  # noqa: E402
 
 sys.dont_write_bytecode = True
 
+logger = logging.getLogger(__name__)
+
 try:
     python_dependencies.check_requirements()
 except python_dependencies.DependencyException as e:
     sys.stderr.writelines(e.message)
     sys.exit(1)
+
+
+def check_bind_error(e, address, bind_addresses):
+    """
+    This method checks an exception occurred while binding on 0.0.0.0.
+    If :: is specified in the bind addresses a warning is shown.
+    The exception is still raised otherwise.
+
+    Binding on both 0.0.0.0 and :: causes an exception on Linux and macOS
+    because :: binds on both IPv4 and IPv6 (as per RFC 3493).
+    When binding on 0.0.0.0 after :: this can safely be ignored.
+
+    Args:
+        e (Exception): Exception that was caught.
+        address (str): Address on which binding was attempted.
+        bind_addresses (list): Addresses on which the service listens.
+    """
+    if address == '0.0.0.0' and '::' in bind_addresses:
+        logger.warn('Failed to listen on 0.0.0.0, continuing because listening on [::]')
+    else:
+        raise e
diff --git a/synapse/app/_base.py b/synapse/app/_base.py
index 18584226e9..3cbb003035 100644
--- a/synapse/app/_base.py
+++ b/synapse/app/_base.py
@@ -15,18 +15,35 @@
 
 import gc
 import logging
+import signal
 import sys
+import traceback
 
 import psutil
 from daemonize import Daemonize
 
 from twisted.internet import error, reactor
 
+from synapse.app import check_bind_error
+from synapse.crypto import context_factory
 from synapse.util import PreserveLoggingContext
 from synapse.util.rlimit import change_resource_limit
 
 logger = logging.getLogger(__name__)
 
+_sighup_callbacks = []
+
+
+def register_sighup(func):
+    """
+    Register a function to be called when a SIGHUP occurs.
+
+    Args:
+        func (function): Function to be called when sent a SIGHUP signal.
+            Will be called with a single argument, the homeserver.
+    """
+    _sighup_callbacks.append(func)
+
 
 def start_worker_reactor(appname, config):
     """ Run the reactor in the main process
@@ -143,6 +160,9 @@ def listen_metrics(bind_addresses, port):
 def listen_tcp(bind_addresses, port, factory, reactor=reactor, backlog=50):
     """
     Create a TCP socket for a port and several addresses
+
+    Returns:
+        list (empty)
     """
     for address in bind_addresses:
         try:
@@ -155,42 +175,80 @@ def listen_tcp(bind_addresses, port, factory, reactor=reactor, backlog=50):
         except error.CannotListenError as e:
             check_bind_error(e, address, bind_addresses)
 
+    logger.info("Synapse now listening on TCP port %d", port)
+    return []
+
 
 def listen_ssl(
     bind_addresses, port, factory, context_factory, reactor=reactor, backlog=50
 ):
     """
-    Create an SSL socket for a port and several addresses
+    Create an TLS-over-TCP socket for a port and several addresses
+
+    Returns:
+        list of twisted.internet.tcp.Port listening for TLS connections
     """
+    r = []
     for address in bind_addresses:
         try:
-            reactor.listenSSL(
-                port,
-                factory,
-                context_factory,
-                backlog,
-                address
+            r.append(
+                reactor.listenSSL(
+                    port,
+                    factory,
+                    context_factory,
+                    backlog,
+                    address
+                )
             )
         except error.CannotListenError as e:
             check_bind_error(e, address, bind_addresses)
 
+    logger.info("Synapse now listening on port %d (TLS)", port)
+    return r
+
 
-def check_bind_error(e, address, bind_addresses):
+def refresh_certificate(hs):
     """
-    This method checks an exception occurred while binding on 0.0.0.0.
-    If :: is specified in the bind addresses a warning is shown.
-    The exception is still raised otherwise.
+    Refresh the TLS certificates that Synapse is using by re-reading them from
+    disk and updating the TLS context factories to use them.
+    """
+    logging.info("Loading certificate from disk...")
+    hs.config.read_certificate_from_disk()
+    hs.tls_server_context_factory = context_factory.ServerContextFactory(hs.config)
+    hs.tls_client_options_factory = context_factory.ClientTLSOptionsFactory(
+        hs.config
+    )
+    logging.info("Certificate loaded.")
 
-    Binding on both 0.0.0.0 and :: causes an exception on Linux and macOS
-    because :: binds on both IPv4 and IPv6 (as per RFC 3493).
-    When binding on 0.0.0.0 after :: this can safely be ignored.
+
+def start(hs, listeners=None):
+    """
+    Start a Synapse server or worker.
 
     Args:
-        e (Exception): Exception that was caught.
-        address (str): Address on which binding was attempted.
-        bind_addresses (list): Addresses on which the service listens.
+        hs (synapse.server.HomeServer)
+        listeners (list[dict]): Listener configuration ('listeners' in homeserver.yaml)
     """
-    if address == '0.0.0.0' and '::' in bind_addresses:
-        logger.warn('Failed to listen on 0.0.0.0, continuing because listening on [::]')
-    else:
-        raise e
+    try:
+        # Set up the SIGHUP machinery.
+        if hasattr(signal, "SIGHUP"):
+            def handle_sighup(*args, **kwargs):
+                for i in _sighup_callbacks:
+                    i(hs)
+
+            signal.signal(signal.SIGHUP, handle_sighup)
+
+            register_sighup(refresh_certificate)
+
+        # Load the certificate from disk.
+        refresh_certificate(hs)
+
+        # It is now safe to start your Synapse.
+        hs.start_listening(listeners)
+        hs.get_datastore().start_profiling()
+    except Exception:
+        traceback.print_exc(file=sys.stderr)
+        reactor = hs.get_reactor()
+        if reactor.running:
+            reactor.stop()
+        sys.exit(1)
diff --git a/synapse/app/appservice.py b/synapse/app/appservice.py
index 8559e141af..33107f56d1 100644
--- a/synapse/app/appservice.py
+++ b/synapse/app/appservice.py
@@ -168,12 +168,7 @@ def start(config_options):
     )
 
     ps.setup()
-    ps.start_listening(config.worker_listeners)
-
-    def start():
-        ps.get_datastore().start_profiling()
-
-    reactor.callWhenRunning(start)
+    reactor.callWhenRunning(_base.start, ps, config.worker_listeners)
 
     _base.start_worker_reactor("synapse-appservice", config)
 
diff --git a/synapse/app/client_reader.py b/synapse/app/client_reader.py
index 76aed8c60a..a9d2147022 100644
--- a/synapse/app/client_reader.py
+++ b/synapse/app/client_reader.py
@@ -25,7 +25,6 @@ from synapse.app import _base
 from synapse.config._base import ConfigError
 from synapse.config.homeserver import HomeServerConfig
 from synapse.config.logger import setup_logging
-from synapse.crypto import context_factory
 from synapse.http.server import JsonResource
 from synapse.http.site import SynapseSite
 from synapse.metrics import RegistryProxy
@@ -164,26 +163,16 @@ def start(config_options):
 
     database_engine = create_engine(config.database_config)
 
-    tls_server_context_factory = context_factory.ServerContextFactory(config)
-    tls_client_options_factory = context_factory.ClientTLSOptionsFactory(config)
-
     ss = ClientReaderServer(
         config.server_name,
         db_config=config.database_config,
-        tls_server_context_factory=tls_server_context_factory,
-        tls_client_options_factory=tls_client_options_factory,
         config=config,
         version_string="Synapse/" + get_version_string(synapse),
         database_engine=database_engine,
     )
 
     ss.setup()
-    ss.start_listening(config.worker_listeners)
-
-    def start():
-        ss.get_datastore().start_profiling()
-
-    reactor.callWhenRunning(start)
+    reactor.callWhenRunning(_base.start, ss, config.worker_listeners)
 
     _base.start_worker_reactor("synapse-client-reader", config)
 
diff --git a/synapse/app/event_creator.py b/synapse/app/event_creator.py
index e4a68715aa..b8e5196152 100644
--- a/synapse/app/event_creator.py
+++ b/synapse/app/event_creator.py
@@ -25,7 +25,6 @@ from synapse.app import _base
 from synapse.config._base import ConfigError
 from synapse.config.homeserver import HomeServerConfig
 from synapse.config.logger import setup_logging
-from synapse.crypto import context_factory
 from synapse.http.server import JsonResource
 from synapse.http.site import SynapseSite
 from synapse.metrics import RegistryProxy
@@ -185,26 +184,16 @@ def start(config_options):
 
     database_engine = create_engine(config.database_config)
 
-    tls_server_context_factory = context_factory.ServerContextFactory(config)
-    tls_client_options_factory = context_factory.ClientTLSOptionsFactory(config)
-
     ss = EventCreatorServer(
         config.server_name,
         db_config=config.database_config,
-        tls_server_context_factory=tls_server_context_factory,
-        tls_client_options_factory=tls_client_options_factory,
         config=config,
         version_string="Synapse/" + get_version_string(synapse),
         database_engine=database_engine,
     )
 
     ss.setup()
-    ss.start_listening(config.worker_listeners)
-
-    def start():
-        ss.get_datastore().start_profiling()
-
-    reactor.callWhenRunning(start)
+    reactor.callWhenRunning(_base.start, ss, config.worker_listeners)
 
     _base.start_worker_reactor("synapse-event-creator", config)
 
diff --git a/synapse/app/federation_reader.py b/synapse/app/federation_reader.py
index 2c99ce8c64..6ee2b76dcd 100644
--- a/synapse/app/federation_reader.py
+++ b/synapse/app/federation_reader.py
@@ -26,7 +26,6 @@ from synapse.app import _base
 from synapse.config._base import ConfigError
 from synapse.config.homeserver import HomeServerConfig
 from synapse.config.logger import setup_logging
-from synapse.crypto import context_factory
 from synapse.federation.transport.server import TransportLayerServer
 from synapse.http.site import SynapseSite
 from synapse.metrics import RegistryProxy
@@ -162,26 +161,16 @@ def start(config_options):
 
     database_engine = create_engine(config.database_config)
 
-    tls_server_context_factory = context_factory.ServerContextFactory(config)
-    tls_client_options_factory = context_factory.ClientTLSOptionsFactory(config)
-
     ss = FederationReaderServer(
         config.server_name,
         db_config=config.database_config,
-        tls_server_context_factory=tls_server_context_factory,
-        tls_client_options_factory=tls_client_options_factory,
         config=config,
         version_string="Synapse/" + get_version_string(synapse),
         database_engine=database_engine,
     )
 
     ss.setup()
-    ss.start_listening(config.worker_listeners)
-
-    def start():
-        ss.get_datastore().start_profiling()
-
-    reactor.callWhenRunning(start)
+    reactor.callWhenRunning(_base.start, ss, config.worker_listeners)
 
     _base.start_worker_reactor("synapse-federation-reader", config)
 
diff --git a/synapse/app/federation_sender.py b/synapse/app/federation_sender.py
index e9a99d76e1..a461442fdc 100644
--- a/synapse/app/federation_sender.py
+++ b/synapse/app/federation_sender.py
@@ -25,7 +25,6 @@ from synapse.app import _base
 from synapse.config._base import ConfigError
 from synapse.config.homeserver import HomeServerConfig
 from synapse.config.logger import setup_logging
-from synapse.crypto import context_factory
 from synapse.federation import send_queue
 from synapse.http.site import SynapseSite
 from synapse.metrics import RegistryProxy
@@ -183,26 +182,17 @@ def start(config_options):
     # Force the pushers to start since they will be disabled in the main config
     config.send_federation = True
 
-    tls_server_context_factory = context_factory.ServerContextFactory(config)
-    tls_client_options_factory = context_factory.ClientTLSOptionsFactory(config)
-
-    ps = FederationSenderServer(
+    ss = FederationSenderServer(
         config.server_name,
         db_config=config.database_config,
-        tls_server_context_factory=tls_server_context_factory,
-        tls_client_options_factory=tls_client_options_factory,
         config=config,
         version_string="Synapse/" + get_version_string(synapse),
         database_engine=database_engine,
     )
 
-    ps.setup()
-    ps.start_listening(config.worker_listeners)
-
-    def start():
-        ps.get_datastore().start_profiling()
+    ss.setup()
+    reactor.callWhenRunning(_base.start, ss, config.worker_listeners)
 
-    reactor.callWhenRunning(start)
     _base.start_worker_reactor("synapse-federation-sender", config)
 
 
diff --git a/synapse/app/frontend_proxy.py b/synapse/app/frontend_proxy.py
index f5c61dec5b..d5b954361d 100644
--- a/synapse/app/frontend_proxy.py
+++ b/synapse/app/frontend_proxy.py
@@ -26,7 +26,6 @@ from synapse.app import _base
 from synapse.config._base import ConfigError
 from synapse.config.homeserver import HomeServerConfig
 from synapse.config.logger import setup_logging
-from synapse.crypto import context_factory
 from synapse.http.server import JsonResource
 from synapse.http.servlet import RestServlet, parse_json_object_from_request
 from synapse.http.site import SynapseSite
@@ -241,26 +240,16 @@ def start(config_options):
 
     database_engine = create_engine(config.database_config)
 
-    tls_server_context_factory = context_factory.ServerContextFactory(config)
-    tls_client_options_factory = context_factory.ClientTLSOptionsFactory(config)
-
     ss = FrontendProxyServer(
         config.server_name,
         db_config=config.database_config,
-        tls_server_context_factory=tls_server_context_factory,
-        tls_client_options_factory=tls_client_options_factory,
         config=config,
         version_string="Synapse/" + get_version_string(synapse),
         database_engine=database_engine,
     )
 
     ss.setup()
-    ss.start_listening(config.worker_listeners)
-
-    def start():
-        ss.get_datastore().start_profiling()
-
-    reactor.callWhenRunning(start)
+    reactor.callWhenRunning(_base.start, ss, config.worker_listeners)
 
     _base.start_worker_reactor("synapse-frontend-proxy", config)
 
diff --git a/synapse/app/homeserver.py b/synapse/app/homeserver.py
index 0a924d7a80..d1cab07bb6 100755
--- a/synapse/app/homeserver.py
+++ b/synapse/app/homeserver.py
@@ -13,10 +13,12 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+
 import gc
 import logging
 import os
 import sys
+import traceback
 
 from six import iteritems
 
@@ -45,7 +47,6 @@ from synapse.app import _base
 from synapse.app._base import listen_ssl, listen_tcp, quit_with_error
 from synapse.config._base import ConfigError
 from synapse.config.homeserver import HomeServerConfig
-from synapse.crypto import context_factory
 from synapse.federation.transport.server import TransportLayerServer
 from synapse.http.additional_resource import AdditionalResource
 from synapse.http.server import RootRedirect
@@ -82,6 +83,7 @@ def gz_wrap(r):
 
 class SynapseHomeServer(HomeServer):
     DATASTORE_CLASS = DataStore
+    _listening_services = []
 
     def _listener_http(self, config, listener_config):
         port = listener_config["port"]
@@ -90,7 +92,9 @@ class SynapseHomeServer(HomeServer):
         site_tag = listener_config.get("tag", port)
 
         if tls and config.no_tls:
-            return
+            raise ConfigError(
+                "Listener on port %i has TLS enabled, but no_tls is set" % (port,),
+            )
 
         resources = {}
         for res in listener_config["resources"]:
@@ -123,7 +127,7 @@ class SynapseHomeServer(HomeServer):
         root_resource = create_resource_tree(resources, root_resource)
 
         if tls:
-            listen_ssl(
+            return listen_ssl(
                 bind_addresses,
                 port,
                 SynapseSite(
@@ -138,7 +142,7 @@ class SynapseHomeServer(HomeServer):
             )
 
         else:
-            listen_tcp(
+            return listen_tcp(
                 bind_addresses,
                 port,
                 SynapseSite(
@@ -150,7 +154,6 @@ class SynapseHomeServer(HomeServer):
                 ),
                 reactor=self.get_reactor(),
             )
-        logger.info("Synapse now listening on port %d", port)
 
     def _configure_named_resource(self, name, compress=False):
         """Build a resource map for a named resource
@@ -246,12 +249,14 @@ class SynapseHomeServer(HomeServer):
 
         return resources
 
-    def start_listening(self):
+    def start_listening(self, listeners):
         config = self.get_config()
 
-        for listener in config.listeners:
+        for listener in listeners:
             if listener["type"] == "http":
-                self._listener_http(config, listener)
+                self._listening_services.extend(
+                    self._listener_http(config, listener)
+                )
             elif listener["type"] == "manhole":
                 listen_tcp(
                     listener["bind_addresses"],
@@ -331,21 +336,19 @@ def setup(config_options):
         # generating config files and shouldn't try to continue.
         sys.exit(0)
 
-    synapse.config.logger.setup_logging(config, use_worker_options=False)
+    synapse.config.logger.setup_logging(
+        config,
+        use_worker_options=False
+    )
 
     events.USE_FROZEN_DICTS = config.use_frozen_dicts
 
-    tls_server_context_factory = context_factory.ServerContextFactory(config)
-    tls_client_options_factory = context_factory.ClientTLSOptionsFactory(config)
-
     database_engine = create_engine(config.database_config)
     config.database_config["args"]["cp_openfun"] = database_engine.on_new_connection
 
     hs = SynapseHomeServer(
         config.server_name,
         db_config=config.database_config,
-        tls_server_context_factory=tls_server_context_factory,
-        tls_client_options_factory=tls_client_options_factory,
         config=config,
         version_string="Synapse/" + get_version_string(synapse),
         database_engine=database_engine,
@@ -372,12 +375,44 @@ def setup(config_options):
     logger.info("Database prepared in %s.", config.database_config['name'])
 
     hs.setup()
-    hs.start_listening()
 
+    @defer.inlineCallbacks
     def start():
-        hs.get_pusherpool().start()
-        hs.get_datastore().start_profiling()
-        hs.get_datastore().start_doing_background_updates()
+        try:
+            # Check if the certificate is still valid.
+            cert_days_remaining = hs.config.is_disk_cert_valid()
+
+            if hs.config.acme_enabled:
+                # If ACME is enabled, we might need to provision a certificate
+                # before starting.
+                acme = hs.get_acme_handler()
+
+                # Start up the webservices which we will respond to ACME
+                # challenges with.
+                yield acme.start_listening()
+
+                # We want to reprovision if cert_days_remaining is None (meaning no
+                # certificate exists), or the days remaining number it returns
+                # is less than our re-registration threshold.
+                if (cert_days_remaining is None) or (
+                    not cert_days_remaining > hs.config.acme_reprovision_threshold
+                ):
+                    yield acme.provision_certificate()
+
+            _base.start(hs, config.listeners)
+
+            hs.get_pusherpool().start()
+            hs.get_datastore().start_doing_background_updates()
+        except Exception as e:
+            # If a DeferredList failed (like in listening on the ACME listener),
+            # we need to print the subfailure explicitly.
+            if isinstance(e, defer.FirstError):
+                e.subFailure.printTraceback(sys.stderr)
+                sys.exit(1)
+
+            # Something else went wrong when starting. Print it and bail out.
+            traceback.print_exc(file=sys.stderr)
+            sys.exit(1)
 
     reactor.callWhenRunning(start)
 
diff --git a/synapse/app/media_repository.py b/synapse/app/media_repository.py
index acc0487adc..d4cc4e9443 100644
--- a/synapse/app/media_repository.py
+++ b/synapse/app/media_repository.py
@@ -26,7 +26,6 @@ from synapse.app import _base
 from synapse.config._base import ConfigError
 from synapse.config.homeserver import HomeServerConfig
 from synapse.config.logger import setup_logging
-from synapse.crypto import context_factory
 from synapse.http.site import SynapseSite
 from synapse.metrics import RegistryProxy
 from synapse.metrics.resource import METRICS_PREFIX, MetricsResource
@@ -151,26 +150,16 @@ def start(config_options):
 
     database_engine = create_engine(config.database_config)
 
-    tls_server_context_factory = context_factory.ServerContextFactory(config)
-    tls_client_options_factory = context_factory.ClientTLSOptionsFactory(config)
-
     ss = MediaRepositoryServer(
         config.server_name,
         db_config=config.database_config,
-        tls_server_context_factory=tls_server_context_factory,
-        tls_client_options_factory=tls_client_options_factory,
         config=config,
         version_string="Synapse/" + get_version_string(synapse),
         database_engine=database_engine,
     )
 
     ss.setup()
-    ss.start_listening(config.worker_listeners)
-
-    def start():
-        ss.get_datastore().start_profiling()
-
-    reactor.callWhenRunning(start)
+    reactor.callWhenRunning(_base.start, ss, config.worker_listeners)
 
     _base.start_worker_reactor("synapse-media-repository", config)
 
diff --git a/synapse/app/pusher.py b/synapse/app/pusher.py
index 83b0863f00..cbf0d67f51 100644
--- a/synapse/app/pusher.py
+++ b/synapse/app/pusher.py
@@ -224,11 +224,10 @@ def start(config_options):
     )
 
     ps.setup()
-    ps.start_listening(config.worker_listeners)
 
     def start():
+        _base.start(ps, config.worker_listeners)
         ps.get_pusherpool().start()
-        ps.get_datastore().start_profiling()
 
     reactor.callWhenRunning(start)
 
diff --git a/synapse/app/synchrotron.py b/synapse/app/synchrotron.py
index 0354e82bf8..9163b56d86 100644
--- a/synapse/app/synchrotron.py
+++ b/synapse/app/synchrotron.py
@@ -445,12 +445,7 @@ def start(config_options):
     )
 
     ss.setup()
-    ss.start_listening(config.worker_listeners)
-
-    def start():
-        ss.get_datastore().start_profiling()
-
-    reactor.callWhenRunning(start)
+    reactor.callWhenRunning(_base.start, ss, config.worker_listeners)
 
     _base.start_worker_reactor("synapse-synchrotron", config)
 
diff --git a/synapse/app/user_dir.py b/synapse/app/user_dir.py
index 0a5f62b509..d1ab9512cd 100644
--- a/synapse/app/user_dir.py
+++ b/synapse/app/user_dir.py
@@ -26,7 +26,6 @@ from synapse.app import _base
 from synapse.config._base import ConfigError
 from synapse.config.homeserver import HomeServerConfig
 from synapse.config.logger import setup_logging
-from synapse.crypto import context_factory
 from synapse.http.server import JsonResource
 from synapse.http.site import SynapseSite
 from synapse.metrics import RegistryProxy
@@ -211,26 +210,16 @@ def start(config_options):
     # Force the pushers to start since they will be disabled in the main config
     config.update_user_directory = True
 
-    tls_server_context_factory = context_factory.ServerContextFactory(config)
-    tls_client_options_factory = context_factory.ClientTLSOptionsFactory(config)
-
-    ps = UserDirectoryServer(
+    ss = UserDirectoryServer(
         config.server_name,
         db_config=config.database_config,
-        tls_server_context_factory=tls_server_context_factory,
-        tls_client_options_factory=tls_client_options_factory,
         config=config,
         version_string="Synapse/" + get_version_string(synapse),
         database_engine=database_engine,
     )
 
-    ps.setup()
-    ps.start_listening(config.worker_listeners)
-
-    def start():
-        ps.get_datastore().start_profiling()
-
-    reactor.callWhenRunning(start)
+    ss.setup()
+    reactor.callWhenRunning(_base.start, ss, config.worker_listeners)
 
     _base.start_worker_reactor("synapse-user-dir", config)