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-rw-r--r--synapse/config/__main__.py2
-rw-r--r--synapse/config/_base.py69
-rw-r--r--synapse/config/api.py3
-rw-r--r--synapse/config/appservice.py7
-rw-r--r--synapse/config/captcha.py3
-rw-r--r--synapse/config/cas.py1
-rw-r--r--synapse/config/consent_config.py56
-rw-r--r--synapse/config/database.py5
-rw-r--r--synapse/config/groups.py4
-rw-r--r--synapse/config/homeserver.py11
-rw-r--r--synapse/config/jwt_config.py8
-rw-r--r--synapse/config/key.py41
-rw-r--r--synapse/config/logger.py25
-rw-r--r--synapse/config/metrics.py46
-rw-r--r--synapse/config/password.py1
-rw-r--r--synapse/config/password_auth_providers.py28
-rw-r--r--synapse/config/push.py4
-rw-r--r--synapse/config/ratelimiting.py7
-rw-r--r--synapse/config/registration.py65
-rw-r--r--synapse/config/repository.py91
-rw-r--r--synapse/config/room_directory.py173
-rw-r--r--synapse/config/saml2.py55
-rw-r--r--synapse/config/saml2_config.py109
-rw-r--r--synapse/config/server.py371
-rw-r--r--synapse/config/server_notices_config.py10
-rw-r--r--synapse/config/spam_checker.py8
-rw-r--r--synapse/config/tls.py344
-rw-r--r--synapse/config/user_directory.py2
-rw-r--r--synapse/config/voip.py7
29 files changed, 1079 insertions, 477 deletions
diff --git a/synapse/config/__main__.py b/synapse/config/__main__.py
index 79fe9c3dac..fca35b008c 100644
--- a/synapse/config/__main__.py
+++ b/synapse/config/__main__.py
@@ -16,7 +16,7 @@ from synapse.config._base import ConfigError
 
 if __name__ == "__main__":
     import sys
-    from homeserver import HomeServerConfig
+    from synapse.config.homeserver import HomeServerConfig
 
     action = sys.argv[1]
 
diff --git a/synapse/config/_base.py b/synapse/config/_base.py
index 14dae65ea0..5aec43b702 100644
--- a/synapse/config/_base.py
+++ b/synapse/config/_base.py
@@ -135,10 +135,6 @@ class Config(object):
             return file_stream.read()
 
     @staticmethod
-    def default_path(name):
-        return os.path.abspath(os.path.join(os.path.curdir, name))
-
-    @staticmethod
     def read_config_file(file_path):
         with open(file_path) as file_stream:
             return yaml.load(file_stream)
@@ -151,8 +147,39 @@ class Config(object):
         return results
 
     def generate_config(
-        self, config_dir_path, server_name, is_generating_file, report_stats=None
+        self,
+        config_dir_path,
+        data_dir_path,
+        server_name,
+        generate_secrets=False,
+        report_stats=None,
     ):
+        """Build a default configuration file
+
+        This is used both when the user explicitly asks us to generate a config file
+        (eg with --generate_config), and before loading the config at runtime (to give
+        a base which the config files override)
+
+        Args:
+            config_dir_path (str): The path where the config files are kept. Used to
+                create filenames for things like the log config and the signing key.
+
+            data_dir_path (str): The path where the data files are kept. Used to create
+                filenames for things like the database and media store.
+
+            server_name (str): The server name. Used to initialise the server_name
+                config param, but also used in the names of some of the config files.
+
+            generate_secrets (bool): True if we should generate new secrets for things
+                like the macaroon_secret_key. If False, these parameters will be left
+                unset.
+
+            report_stats (bool|None): Initial setting for the report_stats setting.
+                If None, report_stats will be left unset.
+
+        Returns:
+            str: the yaml config file
+        """
         default_config = "# vim:ft=yaml\n"
 
         default_config += "\n\n".join(
@@ -160,15 +187,14 @@ class Config(object):
             for conf in self.invoke_all(
                 "default_config",
                 config_dir_path=config_dir_path,
+                data_dir_path=data_dir_path,
                 server_name=server_name,
-                is_generating_file=is_generating_file,
+                generate_secrets=generate_secrets,
                 report_stats=report_stats,
             )
         )
 
-        config = yaml.load(default_config)
-
-        return default_config, config
+        return default_config
 
     @classmethod
     def load_config(cls, description, argv):
@@ -231,7 +257,7 @@ class Config(object):
             "--keys-directory",
             metavar="DIRECTORY",
             help="Used with 'generate-*' options to specify where files such as"
-            " certs and signing keys should be stored in, unless explicitly"
+            " signing keys should be stored, unless explicitly"
             " specified in the config.",
         )
         config_parser.add_argument(
@@ -274,27 +300,24 @@ class Config(object):
                 if not cls.path_exists(config_dir_path):
                     os.makedirs(config_dir_path)
                 with open(config_path, "w") as config_file:
-                    config_str, config = obj.generate_config(
+                    config_str = obj.generate_config(
                         config_dir_path=config_dir_path,
+                        data_dir_path=os.getcwd(),
                         server_name=server_name,
                         report_stats=(config_args.report_stats == "yes"),
-                        is_generating_file=True,
+                        generate_secrets=True,
                     )
+                    config = yaml.load(config_str)
                     obj.invoke_all("generate_files", config)
                     config_file.write(config_str)
                 print(
                     (
                         "A config file has been generated in %r for server name"
-                        " %r with corresponding SSL keys and self-signed"
-                        " certificates. Please review this file and customise it"
+                        " %r. Please review this file and customise it"
                         " to your needs."
                     )
                     % (config_path, server_name)
                 )
-                print(
-                    "If this server name is incorrect, you will need to"
-                    " regenerate the SSL certificates"
-                )
                 return
             else:
                 print(
@@ -339,7 +362,7 @@ class Config(object):
         if not keys_directory:
             keys_directory = os.path.dirname(config_files[-1])
 
-        config_dir_path = os.path.abspath(keys_directory)
+        self.config_dir_path = os.path.abspath(keys_directory)
 
         specified_config = {}
         for config_file in config_files:
@@ -350,11 +373,13 @@ class Config(object):
             raise ConfigError(MISSING_SERVER_NAME)
 
         server_name = specified_config["server_name"]
-        _, config = self.generate_config(
-            config_dir_path=config_dir_path,
+        config_string = self.generate_config(
+            config_dir_path=self.config_dir_path,
+            data_dir_path=os.getcwd(),
             server_name=server_name,
-            is_generating_file=False,
+            generate_secrets=False,
         )
+        config = yaml.load(config_string)
         config.pop("log_config")
         config.update(specified_config)
 
diff --git a/synapse/config/api.py b/synapse/config/api.py
index 403d96ba76..e8a753f002 100644
--- a/synapse/config/api.py
+++ b/synapse/config/api.py
@@ -24,6 +24,7 @@ class ApiConfig(Config):
             EventTypes.JoinRules,
             EventTypes.CanonicalAlias,
             EventTypes.RoomAvatar,
+            EventTypes.RoomEncryption,
             EventTypes.Name,
         ])
 
@@ -32,9 +33,11 @@ class ApiConfig(Config):
         ## API Configuration ##
 
         # A list of event types that will be included in the room_invite_state
+        #
         room_invite_state_types:
             - "{JoinRules}"
             - "{CanonicalAlias}"
             - "{RoomAvatar}"
+            - "{RoomEncryption}"
             - "{Name}"
         """.format(**vars(EventTypes))
diff --git a/synapse/config/appservice.py b/synapse/config/appservice.py
index 3b161d708a..c260d59464 100644
--- a/synapse/config/appservice.py
+++ b/synapse/config/appservice.py
@@ -33,11 +33,18 @@ class AppServiceConfig(Config):
     def read_config(self, config):
         self.app_service_config_files = config.get("app_service_config_files", [])
         self.notify_appservices = config.get("notify_appservices", True)
+        self.track_appservice_user_ips = config.get("track_appservice_user_ips", False)
 
     def default_config(cls, **kwargs):
         return """\
         # A list of application service config file to use
+        #
         app_service_config_files: []
+
+        # Whether or not to track application service IP addresses. Implicitly
+        # enables MAU tracking for application service users.
+        #
+        track_appservice_user_ips: False
         """
 
 
diff --git a/synapse/config/captcha.py b/synapse/config/captcha.py
index 7ba0c2de6a..4064891ffb 100644
--- a/synapse/config/captcha.py
+++ b/synapse/config/captcha.py
@@ -30,14 +30,17 @@ class CaptchaConfig(Config):
         # See docs/CAPTCHA_SETUP for full details of configuring this.
 
         # This Home Server's ReCAPTCHA public key.
+        #
         recaptcha_public_key: "YOUR_PUBLIC_KEY"
 
         # This Home Server's ReCAPTCHA private key.
+        #
         recaptcha_private_key: "YOUR_PRIVATE_KEY"
 
         # Enables ReCaptcha checks when registering, preventing signup
         # unless a captcha is answered. Requires a valid ReCaptcha
         # public/private key.
+        #
         enable_registration_captcha: False
 
         # A secret key used to bypass the captcha test entirely.
diff --git a/synapse/config/cas.py b/synapse/config/cas.py
index 8109e5f95e..609c0815c8 100644
--- a/synapse/config/cas.py
+++ b/synapse/config/cas.py
@@ -38,6 +38,7 @@ class CasConfig(Config):
     def default_config(self, config_dir_path, server_name, **kwargs):
         return """
         # Enable CAS for registration and login.
+        #
         #cas_config:
         #   enabled: true
         #   server_url: "https://cas-server.com"
diff --git a/synapse/config/consent_config.py b/synapse/config/consent_config.py
index e22c731aad..abeb0180d3 100644
--- a/synapse/config/consent_config.py
+++ b/synapse/config/consent_config.py
@@ -13,6 +13,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from os import path
+
+from synapse.config import ConfigError
+
 from ._base import Config
 
 DEFAULT_CONFIG = """\
@@ -42,18 +46,28 @@ DEFAULT_CONFIG = """\
 # until the user consents to the privacy policy. The value of the setting is
 # used as the text of the error.
 #
-# user_consent:
-#   template_dir: res/templates/privacy
-#   version: 1.0
-#   server_notice_content:
-#     msgtype: m.text
-#     body: >-
-#       To continue using this homeserver you must review and agree to the
-#       terms and conditions at %(consent_uri)s
-#   send_server_notice_to_guests: True
-#   block_events_error: >-
-#     To continue using this homeserver you must review and agree to the
-#     terms and conditions at %(consent_uri)s
+# 'require_at_registration', if enabled, will add a step to the registration
+# process, similar to how captcha works. Users will be required to accept the
+# policy before their account is created.
+#
+# 'policy_name' is the display name of the policy users will see when registering
+# for an account. Has no effect unless `require_at_registration` is enabled.
+# Defaults to "Privacy Policy".
+#
+#user_consent:
+#  template_dir: res/templates/privacy
+#  version: 1.0
+#  server_notice_content:
+#    msgtype: m.text
+#    body: >-
+#      To continue using this homeserver you must review and agree to the
+#      terms and conditions at %(consent_uri)s
+#  send_server_notice_to_guests: True
+#  block_events_error: >-
+#    To continue using this homeserver you must review and agree to the
+#    terms and conditions at %(consent_uri)s
+#  require_at_registration: False
+#  policy_name: Privacy Policy
 #
 """
 
@@ -67,13 +81,23 @@ class ConsentConfig(Config):
         self.user_consent_server_notice_content = None
         self.user_consent_server_notice_to_guests = False
         self.block_events_without_consent_error = None
+        self.user_consent_at_registration = False
+        self.user_consent_policy_name = "Privacy Policy"
 
     def read_config(self, config):
         consent_config = config.get("user_consent")
         if consent_config is None:
             return
         self.user_consent_version = str(consent_config["version"])
-        self.user_consent_template_dir = consent_config["template_dir"]
+        self.user_consent_template_dir = self.abspath(
+            consent_config["template_dir"]
+        )
+        if not path.isdir(self.user_consent_template_dir):
+            raise ConfigError(
+                "Could not find template directory '%s'" % (
+                    self.user_consent_template_dir,
+                ),
+            )
         self.user_consent_server_notice_content = consent_config.get(
             "server_notice_content",
         )
@@ -83,6 +107,12 @@ class ConsentConfig(Config):
         self.user_consent_server_notice_to_guests = bool(consent_config.get(
             "send_server_notice_to_guests", False,
         ))
+        self.user_consent_at_registration = bool(consent_config.get(
+            "require_at_registration", False,
+        ))
+        self.user_consent_policy_name = consent_config.get(
+            "policy_name", "Privacy Policy",
+        )
 
     def default_config(self, **kwargs):
         return DEFAULT_CONFIG
diff --git a/synapse/config/database.py b/synapse/config/database.py
index e915d9d09b..c8890147a6 100644
--- a/synapse/config/database.py
+++ b/synapse/config/database.py
@@ -12,6 +12,7 @@
 # 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 os
 
 from ._base import Config
 
@@ -45,8 +46,8 @@ class DatabaseConfig(Config):
 
         self.set_databasepath(config.get("database_path"))
 
-    def default_config(self, **kwargs):
-        database_path = self.abspath("homeserver.db")
+    def default_config(self, data_dir_path, **kwargs):
+        database_path = os.path.join(data_dir_path, "homeserver.db")
         return """\
         # Database configuration
         database:
diff --git a/synapse/config/groups.py b/synapse/config/groups.py
index 997fa2881f..46933a904c 100644
--- a/synapse/config/groups.py
+++ b/synapse/config/groups.py
@@ -24,9 +24,11 @@ class GroupsConfig(Config):
     def default_config(self, **kwargs):
         return """\
         # Whether to allow non server admins to create groups on this server
+        #
         enable_group_creation: false
 
         # If enabled, non server admins can only create groups with local parts
         # starting with this prefix
-        # group_creation_prefix: "unofficial/"
+        #
+        #group_creation_prefix: "unofficial/"
         """
diff --git a/synapse/config/homeserver.py b/synapse/config/homeserver.py
index 10dd40159f..727fdc54d8 100644
--- a/synapse/config/homeserver.py
+++ b/synapse/config/homeserver.py
@@ -32,7 +32,7 @@ from .ratelimiting import RatelimitConfig
 from .registration import RegistrationConfig
 from .repository import ContentRepositoryConfig
 from .room_directory import RoomDirectoryConfig
-from .saml2 import SAML2Config
+from .saml2_config import SAML2Config
 from .server import ServerConfig
 from .server_notices_config import ServerNoticesConfig
 from .spam_checker import SpamCheckerConfig
@@ -42,7 +42,7 @@ from .voip import VoipConfig
 from .workers import WorkerConfig
 
 
-class HomeServerConfig(TlsConfig, ServerConfig, DatabaseConfig, LoggingConfig,
+class HomeServerConfig(ServerConfig, TlsConfig, DatabaseConfig, LoggingConfig,
                        RatelimitConfig, ContentRepositoryConfig, CaptchaConfig,
                        VoipConfig, RegistrationConfig, MetricsConfig, ApiConfig,
                        AppServiceConfig, KeyConfig, SAML2Config, CasConfig,
@@ -53,10 +53,3 @@ class HomeServerConfig(TlsConfig, ServerConfig, DatabaseConfig, LoggingConfig,
                        ServerNoticesConfig, RoomDirectoryConfig,
                        ):
     pass
-
-
-if __name__ == '__main__':
-    import sys
-    sys.stdout.write(
-        HomeServerConfig().generate_config(sys.argv[1], sys.argv[2], True)[0]
-    )
diff --git a/synapse/config/jwt_config.py b/synapse/config/jwt_config.py
index 51e7f7e003..ecb4124096 100644
--- a/synapse/config/jwt_config.py
+++ b/synapse/config/jwt_config.py
@@ -46,8 +46,8 @@ class JWTConfig(Config):
         return """\
         # The JWT needs to contain a globally unique "sub" (subject) claim.
         #
-        # jwt_config:
-        #    enabled: true
-        #    secret: "a secret"
-        #    algorithm: "HS256"
+        #jwt_config:
+        #   enabled: true
+        #   secret: "a secret"
+        #   algorithm: "HS256"
         """
diff --git a/synapse/config/key.py b/synapse/config/key.py
index 279c47bb48..35f05fa974 100644
--- a/synapse/config/key.py
+++ b/synapse/config/key.py
@@ -40,7 +40,7 @@ class KeyConfig(Config):
     def read_config(self, config):
         self.signing_key = self.read_signing_key(config["signing_key_path"])
         self.old_signing_keys = self.read_old_signing_keys(
-            config["old_signing_keys"]
+            config.get("old_signing_keys", {})
         )
         self.key_refresh_interval = self.parse_duration(
             config["key_refresh_interval"]
@@ -56,9 +56,9 @@ class KeyConfig(Config):
         if not self.macaroon_secret_key:
             # Unfortunately, there are people out there that don't have this
             # set. Lets just be "nice" and derive one from their secret key.
-            logger.warn("Config is missing missing macaroon_secret_key")
-            seed = self.signing_key[0].seed
-            self.macaroon_secret_key = hashlib.sha256(seed)
+            logger.warn("Config is missing macaroon_secret_key")
+            seed = bytes(self.signing_key[0])
+            self.macaroon_secret_key = hashlib.sha256(seed).digest()
 
         self.expire_access_token = config.get("expire_access_token", False)
 
@@ -66,35 +66,46 @@ class KeyConfig(Config):
         # falsification of values
         self.form_secret = config.get("form_secret", None)
 
-    def default_config(self, config_dir_path, server_name, is_generating_file=False,
+    def default_config(self, config_dir_path, server_name, generate_secrets=False,
                        **kwargs):
         base_key_name = os.path.join(config_dir_path, server_name)
 
-        if is_generating_file:
-            macaroon_secret_key = random_string_with_symbols(50)
-            form_secret = '"%s"' % random_string_with_symbols(50)
+        if generate_secrets:
+            macaroon_secret_key = 'macaroon_secret_key: "%s"' % (
+                random_string_with_symbols(50),
+            )
+            form_secret = 'form_secret: "%s"' % random_string_with_symbols(50)
         else:
-            macaroon_secret_key = None
-            form_secret = 'null'
+            macaroon_secret_key = "# macaroon_secret_key: <PRIVATE STRING>"
+            form_secret = "# form_secret: <PRIVATE STRING>"
 
         return """\
-        macaroon_secret_key: "%(macaroon_secret_key)s"
+        # a secret which is used to sign access tokens. If none is specified,
+        # the registration_shared_secret is used, if one is given; otherwise,
+        # a secret key is derived from the signing key.
+        #
+        %(macaroon_secret_key)s
 
         # Used to enable access token expiration.
+        #
         expire_access_token: False
 
         # a secret which is used to calculate HMACs for form values, to stop
-        # falsification of values
-        form_secret: %(form_secret)s
+        # falsification of values. Must be specified for the User Consent
+        # forms to work.
+        #
+        %(form_secret)s
 
         ## Signing Keys ##
 
         # Path to the signing key to sign messages with
+        #
         signing_key_path: "%(base_key_name)s.signing.key"
 
         # The keys that the server used to sign messages with but won't use
         # to sign new messages. E.g. it has lost its private key
-        old_signing_keys: {}
+        #
+        #old_signing_keys:
         #  "ed25519:auto":
         #    # Base64 encoded public key
         #    key: "The public part of your old signing key."
@@ -105,9 +116,11 @@ class KeyConfig(Config):
         # Used to set the valid_until_ts in /key/v2 APIs.
         # Determines how quickly servers will query to check which keys
         # are still valid.
+        #
         key_refresh_interval: "1d" # 1 Day.
 
         # The trusted servers to download signing keys from.
+        #
         perspectives:
           servers:
             "matrix.org":
diff --git a/synapse/config/logger.py b/synapse/config/logger.py
index e9a936118d..f6940b65fd 100644
--- a/synapse/config/logger.py
+++ b/synapse/config/logger.py
@@ -15,7 +15,6 @@
 import logging
 import logging.config
 import os
-import signal
 import sys
 from string import Template
 
@@ -24,6 +23,7 @@ import yaml
 from twisted.logger import STDLibLogObserver, globalLogBeginner
 
 import synapse
+from synapse.app import _base as appbase
 from synapse.util.logcontext import LoggingContextFilter
 from synapse.util.versionstring import get_version_string
 
@@ -50,6 +50,7 @@ handlers:
         maxBytes: 104857600
         backupCount: 10
         filters: [context]
+        encoding: utf8
     console:
         class: logging.StreamHandler
         formatter: precise
@@ -79,11 +80,10 @@ class LoggingConfig(Config):
         self.log_file = self.abspath(config.get("log_file"))
 
     def default_config(self, config_dir_path, server_name, **kwargs):
-        log_config = self.abspath(
-            os.path.join(config_dir_path, server_name + ".log.config")
-        )
+        log_config = os.path.join(config_dir_path, server_name + ".log.config")
         return """
         # A yaml python logging config file
+        #
         log_config: "%(log_config)s"
         """ % locals()
 
@@ -137,6 +137,9 @@ def setup_logging(config, use_worker_options=False):
 
         use_worker_options (bool): True to use 'worker_log_config' and
             'worker_log_file' options instead of 'log_config' and 'log_file'.
+
+        register_sighup (func | None): Function to call to register a
+            sighup handler.
     """
     log_config = (config.worker_log_config if use_worker_options
                   else config.log_config)
@@ -179,7 +182,7 @@ def setup_logging(config, use_worker_options=False):
         else:
             handler = logging.StreamHandler()
 
-            def sighup(signum, stack):
+            def sighup(*args):
                 pass
 
         handler.setFormatter(formatter)
@@ -192,20 +195,14 @@ def setup_logging(config, use_worker_options=False):
             with open(log_config, 'r') as f:
                 logging.config.dictConfig(yaml.load(f))
 
-        def sighup(signum, stack):
+        def sighup(*args):
             # it might be better to use a file watcher or something for this.
             load_log_config()
             logging.info("Reloaded log config from %s due to SIGHUP", log_config)
 
         load_log_config()
 
-    # TODO(paul): obviously this is a terrible mechanism for
-    #   stealing SIGHUP, because it means no other part of synapse
-    #   can use it instead. If we want to catch SIGHUP anywhere
-    #   else as well, I'd suggest we find a nicer way to broadcast
-    #   it around.
-    if getattr(signal, "SIGHUP"):
-        signal.signal(signal.SIGHUP, sighup)
+    appbase.register_sighup(sighup)
 
     # make sure that the first thing we log is a thing we can grep backwards
     # for
@@ -246,3 +243,5 @@ def setup_logging(config, use_worker_options=False):
         [_log],
         redirectStandardIO=not config.no_redirect_stdio,
     )
+    if not config.no_redirect_stdio:
+        print("Redirected stdout/stderr to logs")
diff --git a/synapse/config/metrics.py b/synapse/config/metrics.py
index 61155c99d0..ed0498c634 100644
--- a/synapse/config/metrics.py
+++ b/synapse/config/metrics.py
@@ -13,7 +13,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from ._base import Config
+from ._base import Config, ConfigError
+
+MISSING_SENTRY = (
+    """Missing sentry-sdk library. This is required to enable sentry
+    integration.
+    """
+)
 
 
 class MetricsConfig(Config):
@@ -23,11 +29,43 @@ class MetricsConfig(Config):
         self.metrics_port = config.get("metrics_port")
         self.metrics_bind_host = config.get("metrics_bind_host", "127.0.0.1")
 
+        self.sentry_enabled = "sentry" in config
+        if self.sentry_enabled:
+            try:
+                import sentry_sdk  # noqa F401
+            except ImportError:
+                raise ConfigError(MISSING_SENTRY)
+
+            self.sentry_dsn = config["sentry"].get("dsn")
+            if not self.sentry_dsn:
+                raise ConfigError(
+                    "sentry.dsn field is required when sentry integration is enabled",
+                )
+
     def default_config(self, report_stats=None, **kwargs):
-        suffix = "" if report_stats is None else "report_stats: %(report_stats)s\n"
-        return ("""\
+        res = """\
         ## Metrics ###
 
         # Enable collection and rendering of performance metrics
+        #
         enable_metrics: False
-        """ + suffix) % locals()
+
+        # Enable sentry integration
+        # NOTE: While attempts are made to ensure that the logs don't contain
+        # any sensitive information, this cannot be guaranteed. By enabling
+        # this option the sentry server may therefore receive sensitive
+        # information, and it in turn may then diseminate sensitive information
+        # through insecure notification channels if so configured.
+        #
+        #sentry:
+        #    dsn: "..."
+
+        # Whether or not to report anonymized homeserver usage statistics.
+        """
+
+        if report_stats is None:
+            res += "# report_stats: true|false\n"
+        else:
+            res += "report_stats: %s\n" % ('true' if report_stats else 'false')
+
+        return res
diff --git a/synapse/config/password.py b/synapse/config/password.py
index a4bd171399..2a52b9db54 100644
--- a/synapse/config/password.py
+++ b/synapse/config/password.py
@@ -28,6 +28,7 @@ class PasswordConfig(Config):
     def default_config(self, config_dir_path, server_name, **kwargs):
         return """
         # Enable password for login.
+        #
         password_config:
            enabled: true
            # Uncomment and change to a secret random string for extra security.
diff --git a/synapse/config/password_auth_providers.py b/synapse/config/password_auth_providers.py
index f4066abc28..f0a6be0679 100644
--- a/synapse/config/password_auth_providers.py
+++ b/synapse/config/password_auth_providers.py
@@ -52,18 +52,18 @@ class PasswordAuthProviderConfig(Config):
 
     def default_config(self, **kwargs):
         return """\
-        # password_providers:
-        #     - module: "ldap_auth_provider.LdapAuthProvider"
-        #       config:
-        #         enabled: true
-        #         uri: "ldap://ldap.example.com:389"
-        #         start_tls: true
-        #         base: "ou=users,dc=example,dc=com"
-        #         attributes:
-        #            uid: "cn"
-        #            mail: "email"
-        #            name: "givenName"
-        #         #bind_dn:
-        #         #bind_password:
-        #         #filter: "(objectClass=posixAccount)"
+        #password_providers:
+        #    - module: "ldap_auth_provider.LdapAuthProvider"
+        #      config:
+        #        enabled: true
+        #        uri: "ldap://ldap.example.com:389"
+        #        start_tls: true
+        #        base: "ou=users,dc=example,dc=com"
+        #        attributes:
+        #           uid: "cn"
+        #           mail: "email"
+        #           name: "givenName"
+        #        #bind_dn:
+        #        #bind_password:
+        #        #filter: "(objectClass=posixAccount)"
         """
diff --git a/synapse/config/push.py b/synapse/config/push.py
index b7e0d46afa..62c0060c9c 100644
--- a/synapse/config/push.py
+++ b/synapse/config/push.py
@@ -51,11 +51,11 @@ class PushConfig(Config):
         # notification request includes the content of the event (other details
         # like the sender are still included). For `event_id_only` push, it
         # has no effect.
-
+        #
         # For modern android devices the notification content will still appear
         # because it is loaded by the app. iPhone, however will send a
         # notification saying only that a message arrived and who it came from.
         #
         #push:
-        #   include_content: true
+        #  include_content: true
         """
diff --git a/synapse/config/ratelimiting.py b/synapse/config/ratelimiting.py
index 83b22dc199..54b71e6841 100644
--- a/synapse/config/ratelimiting.py
+++ b/synapse/config/ratelimiting.py
@@ -32,27 +32,34 @@ class RatelimitConfig(Config):
         ## Ratelimiting ##
 
         # Number of messages a client can send per second
+        #
         rc_messages_per_second: 0.2
 
         # Number of message a client can send before being throttled
+        #
         rc_message_burst_count: 10.0
 
         # The federation window size in milliseconds
+        #
         federation_rc_window_size: 1000
 
         # The number of federation requests from a single server in a window
         # before the server will delay processing the request.
+        #
         federation_rc_sleep_limit: 10
 
         # The duration in milliseconds to delay processing events from
         # remote servers by if they go over the sleep limit.
+        #
         federation_rc_sleep_delay: 500
 
         # The maximum number of concurrent federation requests allowed
         # from a single server
+        #
         federation_rc_reject_limit: 50
 
         # The number of federation requests to concurrently process from a
         # single server
+        #
         federation_rc_concurrent: 3
         """
diff --git a/synapse/config/registration.py b/synapse/config/registration.py
index 7480ed5145..2881482f96 100644
--- a/synapse/config/registration.py
+++ b/synapse/config/registration.py
@@ -37,6 +37,7 @@ class RegistrationConfig(Config):
 
         self.bcrypt_rounds = config.get("bcrypt_rounds", 12)
         self.trusted_third_party_id_servers = config["trusted_third_party_id_servers"]
+        self.default_identity_server = config.get("default_identity_server")
         self.allow_guest_access = config.get("allow_guest_access", False)
 
         self.invite_3pid_guest = (
@@ -49,8 +50,17 @@ class RegistrationConfig(Config):
                 raise ConfigError('Invalid auto_join_rooms entry %s' % (room_alias,))
         self.autocreate_auto_join_rooms = config.get("autocreate_auto_join_rooms", True)
 
-    def default_config(self, **kwargs):
-        registration_shared_secret = random_string_with_symbols(50)
+        self.disable_msisdn_registration = (
+            config.get("disable_msisdn_registration", False)
+        )
+
+    def default_config(self, generate_secrets=False, **kwargs):
+        if generate_secrets:
+            registration_shared_secret = 'registration_shared_secret: "%s"' % (
+                random_string_with_symbols(50),
+            )
+        else:
+            registration_shared_secret = '# registration_shared_secret: <PRIVATE STRING>'
 
         return """\
         ## Registration ##
@@ -60,54 +70,75 @@ class RegistrationConfig(Config):
 
         # The user must provide all of the below types of 3PID when registering.
         #
-        # registrations_require_3pid:
-        #     - email
-        #     - msisdn
+        #registrations_require_3pid:
+        #  - email
+        #  - msisdn
+
+        # Explicitly disable asking for MSISDNs from the registration
+        # flow (overrides registrations_require_3pid if MSISDNs are set as required)
+        #
+        #disable_msisdn_registration: True
 
         # Mandate that users are only allowed to associate certain formats of
         # 3PIDs with accounts on this server.
         #
-        # allowed_local_3pids:
-        #     - medium: email
-        #       pattern: ".*@matrix\\.org"
-        #     - medium: email
-        #       pattern: ".*@vector\\.im"
-        #     - medium: msisdn
-        #       pattern: "\\+44"
+        #allowed_local_3pids:
+        #  - medium: email
+        #    pattern: '.*@matrix\\.org'
+        #  - medium: email
+        #    pattern: '.*@vector\\.im'
+        #  - medium: msisdn
+        #    pattern: '\\+44'
 
         # If set, allows registration by anyone who also has the shared
         # secret, even if registration is otherwise disabled.
-        registration_shared_secret: "%(registration_shared_secret)s"
+        #
+        %(registration_shared_secret)s
 
         # Set the number of bcrypt rounds used to generate password hash.
         # Larger numbers increase the work factor needed to generate the hash.
         # The default number is 12 (which equates to 2^12 rounds).
         # N.B. that increasing this will exponentially increase the time required
         # to register or login - e.g. 24 => 2^24 rounds which will take >20 mins.
+        #
         bcrypt_rounds: 12
 
         # Allows users to register as guests without a password/email/etc, and
         # participate in rooms hosted on this server which have been made
         # accessible to anonymous users.
+        #
         allow_guest_access: False
 
+        # The identity server which we suggest that clients should use when users log
+        # in on this server.
+        #
+        # (By default, no suggestion is made, so it is left up to the client.
+        # This setting is ignored unless public_baseurl is also set.)
+        #
+        #default_identity_server: https://matrix.org
+
         # The list of identity servers trusted to verify third party
         # identifiers by this server.
+        #
+        # Also defines the ID server which will be called when an account is
+        # deactivated (one will be picked arbitrarily).
+        #
         trusted_third_party_id_servers:
-            - matrix.org
-            - vector.im
-            - riot.im
+          - matrix.org
+          - vector.im
 
         # Users who register on this homeserver will automatically be joined
         # to these rooms
+        #
         #auto_join_rooms:
-        #    - "#example:example.com"
+        #  - "#example:example.com"
 
         # Where auto_join_rooms are specified, setting this flag ensures that the
         # the rooms exist by creating them when the first user on the
         # homeserver registers.
         # Setting to false means that if the rooms are not manually created,
         # users cannot be auto-joined since they do not exist.
+        #
         autocreate_auto_join_rooms: true
         """ % locals()
 
diff --git a/synapse/config/repository.py b/synapse/config/repository.py
index 06c62ab62c..97db2a5b7a 100644
--- a/synapse/config/repository.py
+++ b/synapse/config/repository.py
@@ -12,7 +12,7 @@
 # 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 os
 from collections import namedtuple
 
 from synapse.util.module_loader import load_module
@@ -175,34 +175,39 @@ class ContentRepositoryConfig(Config):
                 "url_preview_url_blacklist", ()
             )
 
-    def default_config(self, **kwargs):
-        media_store = self.default_path("media_store")
-        uploads_path = self.default_path("uploads")
+    def default_config(self, data_dir_path, **kwargs):
+        media_store = os.path.join(data_dir_path, "media_store")
+        uploads_path = os.path.join(data_dir_path, "uploads")
         return r"""
         # Directory where uploaded images and attachments are stored.
+        #
         media_store_path: "%(media_store)s"
 
         # Media storage providers allow media to be stored in different
         # locations.
-        # media_storage_providers:
-        # - module: file_system
-        #   # Whether to write new local files.
-        #   store_local: false
-        #   # Whether to write new remote media
-        #   store_remote: false
-        #   # Whether to block upload requests waiting for write to this
-        #   # provider to complete
-        #   store_synchronous: false
-        #   config:
-        #     directory: /mnt/some/other/directory
+        #
+        #media_storage_providers:
+        #  - module: file_system
+        #    # Whether to write new local files.
+        #    store_local: false
+        #    # Whether to write new remote media
+        #    store_remote: false
+        #    # Whether to block upload requests waiting for write to this
+        #    # provider to complete
+        #    store_synchronous: false
+        #    config:
+        #       directory: /mnt/some/other/directory
 
         # Directory where in-progress uploads are stored.
+        #
         uploads_path: "%(uploads_path)s"
 
         # The largest allowed upload size in bytes
+        #
         max_upload_size: "10M"
 
         # Maximum number of pixels that will be thumbnailed
+        #
         max_image_pixels: "32M"
 
         # Whether to generate new thumbnails on the fly to precisely match
@@ -210,9 +215,11 @@ class ContentRepositoryConfig(Config):
         # a new resolution is requested by the client the server will
         # generate a new thumbnail. If false the server will pick a thumbnail
         # from a precalculated list.
+        #
         dynamic_thumbnails: false
 
-        # List of thumbnail to precalculate when an image is uploaded.
+        # List of thumbnails to precalculate when an image is uploaded.
+        #
         thumbnail_sizes:
         - width: 32
           height: 32
@@ -233,6 +240,7 @@ class ContentRepositoryConfig(Config):
         # Is the preview URL API enabled?  If enabled, you *must* specify
         # an explicit url_preview_ip_range_blacklist of IPs that the spider is
         # denied from accessing.
+        #
         url_preview_enabled: False
 
         # List of IP address CIDR ranges that the URL preview spider is denied
@@ -243,16 +251,16 @@ class ContentRepositoryConfig(Config):
         # synapse to issue arbitrary GET requests to your internal services,
         # causing serious security issues.
         #
-        # url_preview_ip_range_blacklist:
-        # - '127.0.0.0/8'
-        # - '10.0.0.0/8'
-        # - '172.16.0.0/12'
-        # - '192.168.0.0/16'
-        # - '100.64.0.0/10'
-        # - '169.254.0.0/16'
-        # - '::1/128'
-        # - 'fe80::/64'
-        # - 'fc00::/7'
+        #url_preview_ip_range_blacklist:
+        #  - '127.0.0.0/8'
+        #  - '10.0.0.0/8'
+        #  - '172.16.0.0/12'
+        #  - '192.168.0.0/16'
+        #  - '100.64.0.0/10'
+        #  - '169.254.0.0/16'
+        #  - '::1/128'
+        #  - 'fe80::/64'
+        #  - 'fc00::/7'
         #
         # List of IP address CIDR ranges that the URL preview spider is allowed
         # to access even if they are specified in url_preview_ip_range_blacklist.
@@ -260,8 +268,8 @@ class ContentRepositoryConfig(Config):
         # target IP ranges - e.g. for enabling URL previews for a specific private
         # website only visible in your network.
         #
-        # url_preview_ip_range_whitelist:
-        # - '192.168.1.1'
+        #url_preview_ip_range_whitelist:
+        #   - '192.168.1.1'
 
         # Optional list of URL matches that the URL preview spider is
         # denied from accessing.  You should use url_preview_ip_range_blacklist
@@ -279,26 +287,25 @@ class ContentRepositoryConfig(Config):
         # specified component matches for a given list item succeed, the URL is
         # blacklisted.
         #
-        # url_preview_url_blacklist:
-        # # blacklist any URL with a username in its URI
-        # - username: '*'
+        #url_preview_url_blacklist:
+        #  # blacklist any URL with a username in its URI
+        #  - username: '*'
         #
-        # # blacklist all *.google.com URLs
-        # - netloc: 'google.com'
-        # - netloc: '*.google.com'
+        #  # blacklist all *.google.com URLs
+        #  - netloc: 'google.com'
+        #  - netloc: '*.google.com'
         #
-        # # blacklist all plain HTTP URLs
-        # - scheme: 'http'
+        #  # blacklist all plain HTTP URLs
+        #  - scheme: 'http'
         #
-        # # blacklist http(s)://www.acme.com/foo
-        # - netloc: 'www.acme.com'
-        #   path: '/foo'
+        #  # blacklist http(s)://www.acme.com/foo
+        #  - netloc: 'www.acme.com'
+        #    path: '/foo'
         #
-        # # blacklist any URL with a literal IPv4 address
-        # - netloc: '^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$'
+        #  # blacklist any URL with a literal IPv4 address
+        #  - netloc: '^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$'
 
         # The largest allowed URL preview spidering size in bytes
         max_spider_size: "10M"
 
-
         """ % locals()
diff --git a/synapse/config/room_directory.py b/synapse/config/room_directory.py
index 08d1d26e58..3322cf2eea 100644
--- a/synapse/config/room_directory.py
+++ b/synapse/config/room_directory.py
@@ -20,12 +20,37 @@ from ._base import Config, ConfigError
 
 class RoomDirectoryConfig(Config):
     def read_config(self, config):
-        alias_creation_rules = config["alias_creation_rules"]
+        alias_creation_rules = config.get("alias_creation_rules")
 
-        self._alias_creation_rules = [
-            _AliasRule(rule)
-            for rule in alias_creation_rules
-        ]
+        if alias_creation_rules is not None:
+            self._alias_creation_rules = [
+                _RoomDirectoryRule("alias_creation_rules", rule)
+                for rule in alias_creation_rules
+            ]
+        else:
+            self._alias_creation_rules = [
+                _RoomDirectoryRule(
+                    "alias_creation_rules", {
+                        "action": "allow",
+                    }
+                )
+            ]
+
+        room_list_publication_rules = config.get("room_list_publication_rules")
+
+        if room_list_publication_rules is not None:
+            self._room_list_publication_rules = [
+                _RoomDirectoryRule("room_list_publication_rules", rule)
+                for rule in room_list_publication_rules
+            ]
+        else:
+            self._room_list_publication_rules = [
+                _RoomDirectoryRule(
+                    "room_list_publication_rules", {
+                        "action": "allow",
+                    }
+                )
+            ]
 
         self.allow_non_federated_in_public_rooms = config.get(
             "allow_non_federated_in_public_rooms", True,
@@ -37,67 +62,146 @@ class RoomDirectoryConfig(Config):
         # on this server.
         #
         # The format of this option is a list of rules that contain globs that
-        # match against user_id and the new alias (fully qualified with server
-        # name). The action in the first rule that matches is taken, which can
-        # currently either be "allow" or "deny".
+        # match against user_id, room_id and the new alias (fully qualified with
+        # server name). The action in the first rule that matches is taken,
+        # which can currently either be "allow" or "deny".
+        #
+        # Missing user_id/room_id/alias fields default to "*".
+        #
+        # If no rules match the request is denied. An empty list means no one
+        # can create aliases.
+        #
+        # Options for the rules include:
+        #
+        #   user_id: Matches against the creator of the alias
+        #   alias: Matches against the alias being created
+        #   room_id: Matches against the room ID the alias is being pointed at
+        #   action: Whether to "allow" or "deny" the request if the rule matches
+        #
+        # The default is:
+        #
+        #alias_creation_rules:
+        #  - user_id: "*"
+        #    alias: "*"
+        #    room_id: "*"
+        #    action: allow
+
+        # The `room_list_publication_rules` option controls who can publish and
+        # which rooms can be published in the public room list.
+        #
+        # The format of this option is the same as that for
+        # `alias_creation_rules`.
+        #
+        # If the room has one or more aliases associated with it, only one of
+        # the aliases needs to match the alias rule. If there are no aliases
+        # then only rules with `alias: *` match.
         #
-        # If no rules match the request is denied.
-        alias_creation_rules:
-            - user_id: "*"
-              alias: "*"
-              action: allow
+        # If no rules match the request is denied. An empty list means no one
+        # can publish rooms.
+        #
+        # Options for the rules include:
+        #
+        #   user_id: Matches agaisnt the creator of the alias
+        #   room_id: Matches against the room ID being published
+        #   alias: Matches against any current local or canonical aliases
+        #            associated with the room
+        #   action: Whether to "allow" or "deny" the request if the rule matches
+        #
+        # The default is:
+        #
+        #room_list_publication_rules:
+        #  - user_id: "*"
+        #    alias: "*"
+        #    room_id: "*"
+        #    action: allow
 
         # Specify whether rooms that only allow local users to join should be
         # shown in the federation public room directory.
-        # 
+        #
         # Note that this does not affect the room directory shown to users on
         # this homeserver, only those on other homeservers.
+        #
         #allow_non_federated_in_public_rooms: True
         """
 
-    def is_alias_creation_allowed(self, user_id, alias):
+    def is_alias_creation_allowed(self, user_id, room_id, alias):
         """Checks if the given user is allowed to create the given alias
 
         Args:
             user_id (str)
+            room_id (str)
             alias (str)
 
         Returns:
             boolean: True if user is allowed to crate the alias
         """
         for rule in self._alias_creation_rules:
-            if rule.matches(user_id, alias):
+            if rule.matches(user_id, room_id, [alias]):
+                return rule.action == "allow"
+
+        return False
+
+    def is_publishing_room_allowed(self, user_id, room_id, aliases):
+        """Checks if the given user is allowed to publish the room
+
+        Args:
+            user_id (str)
+            room_id (str)
+            aliases (list[str]): any local aliases associated with the room
+
+        Returns:
+            boolean: True if user can publish room
+        """
+        for rule in self._room_list_publication_rules:
+            if rule.matches(user_id, room_id, aliases):
                 return rule.action == "allow"
 
         return False
 
 
-class _AliasRule(object):
-    def __init__(self, rule):
+class _RoomDirectoryRule(object):
+    """Helper class to test whether a room directory action is allowed, like
+    creating an alias or publishing a room.
+    """
+
+    def __init__(self, option_name, rule):
+        """
+        Args:
+            option_name (str): Name of the config option this rule belongs to
+            rule (dict): The rule as specified in the config
+        """
+
         action = rule["action"]
-        user_id = rule["user_id"]
-        alias = rule["alias"]
+        user_id = rule.get("user_id", "*")
+        room_id = rule.get("room_id", "*")
+        alias = rule.get("alias", "*")
 
         if action in ("allow", "deny"):
             self.action = action
         else:
             raise ConfigError(
-                "alias_creation_rules rules can only have action of 'allow'"
-                " or 'deny'"
+                "%s rules can only have action of 'allow'"
+                " or 'deny'" % (option_name,)
             )
 
+        self._alias_matches_all = alias == "*"
+
         try:
             self._user_id_regex = glob_to_regex(user_id)
             self._alias_regex = glob_to_regex(alias)
+            self._room_id_regex = glob_to_regex(room_id)
         except Exception as e:
             raise ConfigError("Failed to parse glob into regex: %s", e)
 
-    def matches(self, user_id, alias):
-        """Tests if this rule matches the given user_id and alias.
+    def matches(self, user_id, room_id, aliases):
+        """Tests if this rule matches the given user_id, room_id and aliases.
 
         Args:
             user_id (str)
-            alias (str)
+            room_id (str)
+            aliases (list[str]): The associated aliases to the room. Will be a
+                single element for testing alias creation, and can be empty for
+                testing room publishing.
 
         Returns:
             boolean
@@ -107,7 +211,22 @@ class _AliasRule(object):
         if not self._user_id_regex.match(user_id):
             return False
 
-        if not self._alias_regex.match(alias):
+        if not self._room_id_regex.match(room_id):
             return False
 
-        return True
+        # We only have alias checks left, so we can short circuit if the alias
+        # rule matches everything.
+        if self._alias_matches_all:
+            return True
+
+        # If we are not given any aliases then this rule only matches if the
+        # alias glob matches all aliases, which we checked above.
+        if not aliases:
+            return False
+
+        # Otherwise, we just need one alias to match
+        for alias in aliases:
+            if self._alias_regex.match(alias):
+                return True
+
+        return False
diff --git a/synapse/config/saml2.py b/synapse/config/saml2.py
deleted file mode 100644
index 8d7f443021..0000000000
--- a/synapse/config/saml2.py
+++ /dev/null
@@ -1,55 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2015 Ericsson
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# 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.
-
-from ._base import Config
-
-
-class SAML2Config(Config):
-    """SAML2 Configuration
-    Synapse uses pysaml2 libraries for providing SAML2 support
-
-    config_path:      Path to the sp_conf.py configuration file
-    idp_redirect_url: Identity provider URL which will redirect
-                      the user back to /login/saml2 with proper info.
-
-    sp_conf.py file is something like:
-    https://github.com/rohe/pysaml2/blob/master/example/sp-repoze/sp_conf.py.example
-
-    More information: https://pythonhosted.org/pysaml2/howto/config.html
-    """
-
-    def read_config(self, config):
-        saml2_config = config.get("saml2_config", None)
-        if saml2_config:
-            self.saml2_enabled = saml2_config.get("enabled", True)
-            self.saml2_config_path = saml2_config["config_path"]
-            self.saml2_idp_redirect_url = saml2_config["idp_redirect_url"]
-        else:
-            self.saml2_enabled = False
-            self.saml2_config_path = None
-            self.saml2_idp_redirect_url = None
-
-    def default_config(self, config_dir_path, server_name, **kwargs):
-        return """
-        # Enable SAML2 for registration and login. Uses pysaml2
-        # config_path:      Path to the sp_conf.py configuration file
-        # idp_redirect_url: Identity provider URL which will redirect
-        #                   the user back to /login/saml2 with proper info.
-        # See pysaml2 docs for format of config.
-        #saml2_config:
-        #   enabled: true
-        #   config_path: "%s/sp_conf.py"
-        #   idp_redirect_url: "http://%s/idp"
-        """ % (config_dir_path, server_name)
diff --git a/synapse/config/saml2_config.py b/synapse/config/saml2_config.py
new file mode 100644
index 0000000000..aff0a1f00c
--- /dev/null
+++ b/synapse/config/saml2_config.py
@@ -0,0 +1,109 @@
+# -*- coding: utf-8 -*-
+# Copyright 2018 New Vector Ltd.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# 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.
+
+from ._base import Config, ConfigError
+
+
+class SAML2Config(Config):
+    def read_config(self, config):
+        self.saml2_enabled = False
+
+        saml2_config = config.get("saml2_config")
+
+        if not saml2_config or not saml2_config.get("enabled", True):
+            return
+
+        self.saml2_enabled = True
+
+        import saml2.config
+        self.saml2_sp_config = saml2.config.SPConfig()
+        self.saml2_sp_config.load(self._default_saml_config_dict())
+        self.saml2_sp_config.load(saml2_config.get("sp_config", {}))
+
+        config_path = saml2_config.get("config_path", None)
+        if config_path is not None:
+            self.saml2_sp_config.load_file(config_path)
+
+    def _default_saml_config_dict(self):
+        import saml2
+
+        public_baseurl = self.public_baseurl
+        if public_baseurl is None:
+            raise ConfigError(
+                "saml2_config requires a public_baseurl to be set"
+            )
+
+        metadata_url = public_baseurl + "_matrix/saml2/metadata.xml"
+        response_url = public_baseurl + "_matrix/saml2/authn_response"
+        return {
+            "entityid": metadata_url,
+
+            "service": {
+                "sp": {
+                    "endpoints": {
+                        "assertion_consumer_service": [
+                            (response_url, saml2.BINDING_HTTP_POST),
+                        ],
+                    },
+                    "required_attributes": ["uid"],
+                    "optional_attributes": ["mail", "surname", "givenname"],
+                },
+            }
+        }
+
+    def default_config(self, config_dir_path, server_name, **kwargs):
+        return """
+        # Enable SAML2 for registration and login. Uses pysaml2.
+        #
+        # `sp_config` is the configuration for the pysaml2 Service Provider.
+        # See pysaml2 docs for format of config.
+        #
+        # Default values will be used for the 'entityid' and 'service' settings,
+        # so it is not normally necessary to specify them unless you need to
+        # override them.
+        #
+        #saml2_config:
+        #  sp_config:
+        #    # point this to the IdP's metadata. You can use either a local file or
+        #    # (preferably) a URL.
+        #    metadata:
+        #      #local: ["saml2/idp.xml"]
+        #      remote:
+        #        - url: https://our_idp/metadata.xml
+        #
+        #    # The rest of sp_config is just used to generate our metadata xml, and you
+        #    # may well not need it, depending on your setup. Alternatively you
+        #    # may need a whole lot more detail - see the pysaml2 docs!
+        #
+        #    description: ["My awesome SP", "en"]
+        #    name: ["Test SP", "en"]
+        #
+        #    organization:
+        #      name: Example com
+        #      display_name:
+        #        - ["Example co", "en"]
+        #      url: "http://example.com"
+        #
+        #    contact_person:
+        #      - given_name: Bob
+        #        sur_name: "the Sysadmin"
+        #        email_address": ["admin@example.com"]
+        #        contact_type": technical
+        #
+        #  # Instead of putting the config inline as above, you can specify a
+        #  # separate pysaml2 configuration file:
+        #  #
+        #  config_path: "%(config_dir_path)s/sp_conf.py"
+        """ % {"config_dir_path": config_dir_path}
diff --git a/synapse/config/server.py b/synapse/config/server.py
index c1c7c0105e..4200f10da3 100644
--- a/synapse/config/server.py
+++ b/synapse/config/server.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
-# Copyright 2017 New Vector Ltd
+# Copyright 2017-2018 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -15,13 +15,23 @@
 # limitations under the License.
 
 import logging
+import os.path
 
 from synapse.http.endpoint import parse_and_validate_server_name
+from synapse.python_dependencies import DependencyException, check_requirements
 
 from ._base import Config, ConfigError
 
 logger = logging.Logger(__name__)
 
+# by default, we attempt to listen on both '::' *and* '0.0.0.0' because some OSes
+# (Windows, macOS, other BSD/Linux where net.ipv6.bindv6only is set) will only listen
+# on IPv6 when '::' is set.
+#
+# We later check for errors when binding to 0.0.0.0 and ignore them if :: is also in
+# in the list.
+DEFAULT_BIND_ADDRESSES = ['::', '0.0.0.0']
+
 
 class ServerConfig(Config):
 
@@ -34,7 +44,6 @@ class ServerConfig(Config):
             raise ConfigError(str(e))
 
         self.pid_file = self.abspath(config.get("pid_file"))
-        self.web_client = config["web_client"]
         self.web_client_location = config.get("web_client_location", None)
         self.soft_file_limit = config["soft_file_limit"]
         self.daemonize = config.get("daemonize")
@@ -62,6 +71,11 @@ class ServerConfig(Config):
         # master, potentially causing inconsistency.
         self.enable_media_repo = config.get("enable_media_repo", True)
 
+        # whether to enable search. If disabled, new entries will not be inserted
+        # into the search tables and they will not be indexed. Users will receive
+        # errors when attempting to search for messages.
+        self.enable_search = config.get("enable_search", True)
+
         self.filter_timeline_limit = config.get("filter_timeline_limit", -1)
 
         # Whether we should block invites sent to users on this server
@@ -77,6 +91,7 @@ class ServerConfig(Config):
             self.max_mau_value = config.get(
                 "max_mau_value", 0,
             )
+        self.mau_stats_only = config.get("mau_stats_only", False)
 
         self.mau_limits_reserved_threepids = config.get(
             "mau_limit_reserved_threepids", []
@@ -111,27 +126,53 @@ class ServerConfig(Config):
                 self.public_baseurl += '/'
         self.start_pushers = config.get("start_pushers", True)
 
-        self.listeners = config.get("listeners", [])
+        self.listeners = []
+        for listener in config.get("listeners", []):
+            if not isinstance(listener.get("port", None), int):
+                raise ConfigError(
+                    "Listener configuration is lacking a valid 'port' option"
+                )
+
+            if listener.setdefault("tls", False):
+                # no_tls is not really supported any more, but let's grandfather it in
+                # here.
+                if config.get("no_tls", False):
+                    logger.info(
+                        "Ignoring TLS-enabled listener on port %i due to no_tls"
+                    )
+                    continue
 
-        for listener in self.listeners:
             bind_address = listener.pop("bind_address", None)
             bind_addresses = listener.setdefault("bind_addresses", [])
 
+            # if bind_address was specified, add it to the list of addresses
             if bind_address:
                 bind_addresses.append(bind_address)
-            elif not bind_addresses:
-                bind_addresses.append('')
+
+            # if we still have an empty list of addresses, use the default list
+            if not bind_addresses:
+                if listener['type'] == 'metrics':
+                    # the metrics listener doesn't support IPv6
+                    bind_addresses.append('0.0.0.0')
+                else:
+                    bind_addresses.extend(DEFAULT_BIND_ADDRESSES)
+
+            self.listeners.append(listener)
+
+        if not self.web_client_location:
+            _warn_if_webclient_configured(self.listeners)
 
         self.gc_thresholds = read_gc_thresholds(config.get("gc_thresholds", None))
 
         bind_port = config.get("bind_port")
         if bind_port:
+            if config.get("no_tls", False):
+                raise ConfigError("no_tls is incompatible with bind_port")
+
             self.listeners = []
             bind_host = config.get("bind_host", "")
             gzip_responses = config.get("gzip_responses", True)
 
-            names = ["client", "webclient"] if self.web_client else ["client"]
-
             self.listeners.append({
                 "port": bind_port,
                 "bind_addresses": [bind_host],
@@ -139,7 +180,7 @@ class ServerConfig(Config):
                 "type": "http",
                 "resources": [
                     {
-                        "names": names,
+                        "names": ["client"],
                         "compress": gzip_responses,
                     },
                     {
@@ -158,7 +199,7 @@ class ServerConfig(Config):
                     "type": "http",
                     "resources": [
                         {
-                            "names": names,
+                            "names": ["client"],
                             "compress": gzip_responses,
                         },
                         {
@@ -174,6 +215,7 @@ class ServerConfig(Config):
                 "port": manhole,
                 "bind_addresses": ["127.0.0.1"],
                 "type": "manhole",
+                "tls": False,
             })
 
         metrics_port = config.get("metrics_port")
@@ -197,7 +239,12 @@ class ServerConfig(Config):
                 ]
             })
 
-    def default_config(self, server_name, **kwargs):
+        _check_resource_config(self.listeners)
+
+    def has_tls_listener(self):
+        return any(l["tls"] for l in self.listeners)
+
+    def default_config(self, server_name, data_dir_path, **kwargs):
         _, bind_port = parse_and_validate_server_name(server_name)
         if bind_port is not None:
             unsecure_port = bind_port - 400
@@ -205,7 +252,7 @@ class ServerConfig(Config):
             bind_port = 8448
             unsecure_port = 8008
 
-        pid_file = self.abspath("homeserver.pid")
+        pid_file = os.path.join(data_dir_path, "homeserver.pid")
         return """\
         ## Server ##
 
@@ -239,19 +286,20 @@ class ServerConfig(Config):
         #
         # This setting requires the affinity package to be installed!
         #
-        # cpu_affinity: 0xFFFFFFFF
-
-        # Whether to serve a web client from the HTTP/HTTPS root resource.
-        web_client: True
+        #cpu_affinity: 0xFFFFFFFF
 
-        # The root directory to server for the above web client.
-        # If left undefined, synapse will serve the matrix-angular-sdk web client.
-        # Make sure matrix-angular-sdk is installed with pip if web_client is True
-        # and web_client_location is undefined
-        # web_client_location: "/path/to/web/root"
+        # The path to the web client which will be served at /_matrix/client/
+        # if 'webclient' is configured under the 'listeners' configuration.
+        #
+        #web_client_location: "/path/to/web/root"
 
-        # The public-facing base URL for the client API (not including _matrix/...)
-        # public_baseurl: https://example.com:8448/
+        # The public-facing base URL that clients use to access this HS
+        # (not including _matrix/...). This is the same URL a user would
+        # enter into the 'custom HS URL' field on their client. If you
+        # use synapse with a reverse proxy, this should be the URL to reach
+        # synapse via the proxy.
+        #
+        #public_baseurl: https://example.com/
 
         # Set the soft limit on the number of file descriptors synapse can use
         # Zero is used to indicate synapse should set the soft limit to the
@@ -262,15 +310,25 @@ class ServerConfig(Config):
         use_presence: true
 
         # The GC threshold parameters to pass to `gc.set_threshold`, if defined
-        # gc_thresholds: [700, 10, 10]
+        #
+        #gc_thresholds: [700, 10, 10]
 
         # Set the limit on the returned events in the timeline in the get
         # and sync operations. The default value is -1, means no upper limit.
-        # filter_timeline_limit: 5000
+        #
+        #filter_timeline_limit: 5000
 
         # Whether room invites to users on this server should be blocked
         # (except those sent by local server admins). The default is False.
-        # block_non_admin_invites: True
+        #
+        #block_non_admin_invites: True
+
+        # Room searching
+        #
+        # If disabled, new messages will not be indexed for searching and users
+        # will receive errors when searching for messages. Defaults to enabled.
+        #
+        #enable_search: false
 
         # Restrict federation to the following whitelist of domains.
         # N.B. we recommend also firewalling your federation listener to limit
@@ -278,107 +336,145 @@ class ServerConfig(Config):
         # purely on this application-layer restriction.  If not specified, the
         # default is to whitelist everything.
         #
-        # federation_domain_whitelist:
+        #federation_domain_whitelist:
         #  - lon.example.com
         #  - nyc.example.com
         #  - syd.example.com
 
         # List of ports that Synapse should listen on, their purpose and their
         # configuration.
+        #
+        # Options for each listener include:
+        #
+        #   port: the TCP port to bind to
+        #
+        #   bind_addresses: a list of local addresses to listen on. The default is
+        #       'all local interfaces'.
+        #
+        #   type: the type of listener. Normally 'http', but other valid options are:
+        #       'manhole' (see docs/manhole.md),
+        #       'metrics' (see docs/metrics-howto.rst),
+        #       'replication' (see docs/workers.rst).
+        #
+        #   tls: set to true to enable TLS for this listener. Will use the TLS
+        #       key/cert specified in tls_private_key_path / tls_certificate_path.
+        #
+        #   x_forwarded: Only valid for an 'http' listener. Set to true to use the
+        #       X-Forwarded-For header as the client IP. Useful when Synapse is
+        #       behind a reverse-proxy.
+        #
+        #   resources: Only valid for an 'http' listener. A list of resources to host
+        #       on this port. Options for each resource are:
+        #
+        #       names: a list of names of HTTP resources. See below for a list of
+        #           valid resource names.
+        #
+        #       compress: set to true to enable HTTP comression for this resource.
+        #
+        #   additional_resources: Only valid for an 'http' listener. A map of
+        #        additional endpoints which should be loaded via dynamic modules.
+        #
+        # Valid resource names are:
+        #
+        #   client: the client-server API (/_matrix/client). Also implies 'media' and
+        #       'static'.
+        #
+        #   consent: user consent forms (/_matrix/consent). See
+        #       docs/consent_tracking.md.
+        #
+        #   federation: the server-server API (/_matrix/federation). Also implies
+        #       'media', 'keys', 'openid'
+        #
+        #   keys: the key discovery API (/_matrix/keys).
+        #
+        #   media: the media API (/_matrix/media).
+        #
+        #   metrics: the metrics interface. See docs/metrics-howto.rst.
+        #
+        #   openid: OpenID authentication.
+        #
+        #   replication: the HTTP replication API (/_synapse/replication). See
+        #       docs/workers.rst.
+        #
+        #   static: static resources under synapse/static (/_matrix/static). (Mostly
+        #       useful for 'fallback authentication'.)
+        #
+        #   webclient: A web client. Requires web_client_location to be set.
+        #
         listeners:
-          # Main HTTPS listener
-          # For when matrix traffic is sent directly to synapse.
-          -
-            # The port to listen for HTTPS requests on.
-            port: %(bind_port)s
-
-            # Local addresses to listen on.
-            # On Linux and Mac OS, `::` will listen on all IPv4 and IPv6
-            # addresses by default. For most other OSes, this will only listen
-            # on IPv6.
-            bind_addresses:
-              - '::'
-              - '0.0.0.0'
-
-            # This is a 'http' listener, allows us to specify 'resources'.
-            type: http
-
-            tls: true
-
-            # Use the X-Forwarded-For (XFF) header as the client IP and not the
-            # actual client IP.
-            x_forwarded: false
-
-            # List of HTTP resources to serve on this listener.
-            resources:
-              -
-                # List of resources to host on this listener.
-                names:
-                  - client     # The client-server APIs, both v1 and v2
-                  - webclient  # The bundled webclient.
-
-                # Should synapse compress HTTP responses to clients that support it?
-                # This should be disabled if running synapse behind a load balancer
-                # that can do automatic compression.
-                compress: true
-
-              - names: [federation]  # Federation APIs
-                compress: false
-
-            # optional list of additional endpoints which can be loaded via
-            # dynamic modules
-            # additional_resources:
-            #   "/_matrix/my/custom/endpoint":
-            #     module: my_module.CustomRequestHandler
-            #     config: {}
-
-          # Unsecure HTTP listener,
-          # For when matrix traffic passes through loadbalancer that unwraps TLS.
+          # TLS-enabled listener: for when matrix traffic is sent directly to synapse.
+          #
+          # Disabled by default. To enable it, uncomment the following. (Note that you
+          # will also need to give Synapse a TLS key and certificate: see the TLS section
+          # below.)
+          #
+          #- port: %(bind_port)s
+          #  type: http
+          #  tls: true
+          #  resources:
+          #    - names: [client, federation]
+
+          # Unsecure HTTP listener: for when matrix traffic passes through a reverse proxy
+          # that unwraps TLS.
+          #
+          # If you plan to use a reverse proxy, please see
+          # https://github.com/matrix-org/synapse/blob/master/docs/reverse_proxy.rst.
+          #
           - port: %(unsecure_port)s
             tls: false
-            bind_addresses: ['::', '0.0.0.0']
+            bind_addresses: ['::1', '127.0.0.1']
             type: http
-
-            x_forwarded: false
+            x_forwarded: true
 
             resources:
-              - names: [client, webclient]
-                compress: true
-              - names: [federation]
+              - names: [client, federation]
                 compress: false
 
+            # example additonal_resources:
+            #
+            #additional_resources:
+            #  "/_matrix/my/custom/endpoint":
+            #    module: my_module.CustomRequestHandler
+            #    config: {}
+
           # Turn on the twisted ssh manhole service on localhost on the given
           # port.
-          # - port: 9000
-          #   bind_addresses: ['::1', '127.0.0.1']
-          #   type: manhole
+          #
+          #- port: 9000
+          #  bind_addresses: ['::1', '127.0.0.1']
+          #  type: manhole
 
 
-          # Homeserver blocking
-          #
-          # How to reach the server admin, used in ResourceLimitError
-          # admin_contact: 'mailto:admin@server.com'
-          #
-          # Global block config
-          #
-          # hs_disabled: False
-          # hs_disabled_message: 'Human readable reason for why the HS is blocked'
-          # hs_disabled_limit_type: 'error code(str), to help clients decode reason'
-          #
-          # Monthly Active User Blocking
-          #
-          # Enables monthly active user checking
-          # limit_usage_by_mau: False
-          # max_mau_value: 50
-          # mau_trial_days: 2
-          #
-          # Sometimes the server admin will want to ensure certain accounts are
-          # never blocked by mau checking. These accounts are specified here.
-          #
-          # mau_limit_reserved_threepids:
-          # - medium: 'email'
-          #   address: 'reserved_user@example.com'
+        ## Homeserver blocking ##
 
+        # How to reach the server admin, used in ResourceLimitError
+        #
+        #admin_contact: 'mailto:admin@server.com'
+
+        # Global blocking
+        #
+        #hs_disabled: False
+        #hs_disabled_message: 'Human readable reason for why the HS is blocked'
+        #hs_disabled_limit_type: 'error code(str), to help clients decode reason'
+
+        # Monthly Active User Blocking
+        #
+        #limit_usage_by_mau: False
+        #max_mau_value: 50
+        #mau_trial_days: 2
+
+        # If enabled, the metrics for the number of monthly active users will
+        # be populated, however no one will be limited. If limit_usage_by_mau
+        # is true, this is implied to be true.
+        #
+        #mau_stats_only: False
+
+        # Sometimes the server admin will want to ensure certain accounts are
+        # never blocked by mau checking. These accounts are specified here.
+        #
+        #mau_limit_reserved_threepids:
+        #  - medium: 'email'
+        #    address: 'reserved_user@example.com'
         """ % locals()
 
     def read_arguments(self, args):
@@ -404,19 +500,18 @@ class ServerConfig(Config):
                                   " service on the given port.")
 
 
-def is_threepid_reserved(config, threepid):
+def is_threepid_reserved(reserved_threepids, threepid):
     """Check the threepid against the reserved threepid config
     Args:
-        config(ServerConfig) - to access server config attributes
+        reserved_threepids([dict]) - list of reserved threepids
         threepid(dict) - The threepid to test for
 
     Returns:
         boolean Is the threepid undertest reserved_user
     """
 
-    for tp in config.mau_limits_reserved_threepids:
-        if (threepid['medium'] == tp['medium']
-                and threepid['address'] == tp['address']):
+    for tp in reserved_threepids:
+        if (threepid['medium'] == tp['medium'] and threepid['address'] == tp['address']):
             return True
     return False
 
@@ -436,3 +531,53 @@ def read_gc_thresholds(thresholds):
         raise ConfigError(
             "Value of `gc_threshold` must be a list of three integers if set"
         )
+
+
+NO_MORE_WEB_CLIENT_WARNING = """
+Synapse no longer includes a web client. To enable a web client, configure
+web_client_location. To remove this warning, remove 'webclient' from the 'listeners'
+configuration.
+"""
+
+
+def _warn_if_webclient_configured(listeners):
+    for listener in listeners:
+        for res in listener.get("resources", []):
+            for name in res.get("names", []):
+                if name == 'webclient':
+                    logger.warning(NO_MORE_WEB_CLIENT_WARNING)
+                    return
+
+
+KNOWN_RESOURCES = (
+    'client',
+    'consent',
+    'federation',
+    'keys',
+    'media',
+    'metrics',
+    'openid',
+    'replication',
+    'static',
+    'webclient',
+)
+
+
+def _check_resource_config(listeners):
+    resource_names = set(
+        res_name
+        for listener in listeners
+        for res in listener.get("resources", [])
+        for res_name in res.get("names", [])
+    )
+
+    for resource in resource_names:
+        if resource not in KNOWN_RESOURCES:
+            raise ConfigError(
+                "Unknown listener resource '%s'" % (resource, )
+            )
+        if resource == "consent":
+            try:
+                check_requirements('resources.consent')
+            except DependencyException as e:
+                raise ConfigError(e.message)
diff --git a/synapse/config/server_notices_config.py b/synapse/config/server_notices_config.py
index 3c39850ac6..529dc0a617 100644
--- a/synapse/config/server_notices_config.py
+++ b/synapse/config/server_notices_config.py
@@ -30,11 +30,11 @@ DEFAULT_CONFIG = """\
 # It's also possible to override the room name, the display name of the
 # "notices" user, and the avatar for the user.
 #
-# server_notices:
-#   system_mxid_localpart: notices
-#   system_mxid_display_name: "Server Notices"
-#   system_mxid_avatar_url: "mxc://server.com/oumMVlgDnLYFaPVkExemNVVZ"
-#   room_name: "Server Notices"
+#server_notices:
+#  system_mxid_localpart: notices
+#  system_mxid_display_name: "Server Notices"
+#  system_mxid_avatar_url: "mxc://server.com/oumMVlgDnLYFaPVkExemNVVZ"
+#  room_name: "Server Notices"
 """
 
 
diff --git a/synapse/config/spam_checker.py b/synapse/config/spam_checker.py
index 3fec42bdb0..1502e9faba 100644
--- a/synapse/config/spam_checker.py
+++ b/synapse/config/spam_checker.py
@@ -28,8 +28,8 @@ class SpamCheckerConfig(Config):
 
     def default_config(self, **kwargs):
         return """\
-        # spam_checker:
-        #     module: "my_custom_project.SuperSpamChecker"
-        #     config:
-        #         example_option: 'things'
+        #spam_checker:
+        #  module: "my_custom_project.SuperSpamChecker"
+        #  config:
+        #    example_option: 'things'
         """
diff --git a/synapse/config/tls.py b/synapse/config/tls.py
index fef1ea99cb..8d5d287357 100644
--- a/synapse/config/tls.py
+++ b/synapse/config/tls.py
@@ -13,51 +13,58 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import logging
 import os
-import subprocess
+import warnings
+from datetime import datetime
 from hashlib import sha256
 
 from unpaddedbase64 import encode_base64
 
 from OpenSSL import crypto
 
-from ._base import Config
+from synapse.config._base import Config, ConfigError
 
-GENERATE_DH_PARAMS = False
+logger = logging.getLogger(__name__)
 
 
 class TlsConfig(Config):
     def read_config(self, config):
-        self.tls_certificate = self.read_tls_certificate(
-            config.get("tls_certificate_path")
+
+        acme_config = config.get("acme", None)
+        if acme_config is None:
+            acme_config = {}
+
+        self.acme_enabled = acme_config.get("enabled", False)
+        self.acme_url = acme_config.get(
+            "url", u"https://acme-v01.api.letsencrypt.org/directory"
         )
-        self.tls_certificate_file = config.get("tls_certificate_path")
+        self.acme_port = acme_config.get("port", 80)
+        self.acme_bind_addresses = acme_config.get("bind_addresses", ['::', '0.0.0.0'])
+        self.acme_reprovision_threshold = acme_config.get("reprovision_threshold", 30)
+        self.acme_domain = acme_config.get("domain", config.get("server_name"))
 
-        self.no_tls = config.get("no_tls", False)
+        self.tls_certificate_file = self.abspath(config.get("tls_certificate_path"))
+        self.tls_private_key_file = self.abspath(config.get("tls_private_key_path"))
 
-        if self.no_tls:
-            self.tls_private_key = None
-        else:
-            self.tls_private_key = self.read_tls_private_key(
-                config.get("tls_private_key_path")
-            )
+        if self.has_tls_listener():
+            if not self.tls_certificate_file:
+                raise ConfigError(
+                    "tls_certificate_path must be specified if TLS-enabled listeners are "
+                    "configured."
+                )
+            if not self.tls_private_key_file:
+                raise ConfigError(
+                    "tls_certificate_path must be specified if TLS-enabled listeners are "
+                    "configured."
+                )
 
-        self.tls_dh_params_path = self.check_file(
-            config.get("tls_dh_params_path"), "tls_dh_params"
-        )
+        self._original_tls_fingerprints = config.get("tls_fingerprints", [])
 
-        self.tls_fingerprints = config["tls_fingerprints"]
+        if self._original_tls_fingerprints is None:
+            self._original_tls_fingerprints = []
 
-        # Check that our own certificate is included in the list of fingerprints
-        # and include it if it is not.
-        x509_certificate_bytes = crypto.dump_certificate(
-            crypto.FILETYPE_ASN1,
-            self.tls_certificate
-        )
-        sha256_fingerprint = encode_base64(sha256(x509_certificate_bytes).digest())
-        sha256_fingerprints = set(f["sha256"] for f in self.tls_fingerprints)
-        if sha256_fingerprint not in sha256_fingerprints:
-            self.tls_fingerprints.append({u"sha256": sha256_fingerprint})
+        self.tls_fingerprints = list(self._original_tls_fingerprints)
 
         # This config option applies to non-federation HTTP clients
         # (e.g. for talking to recaptcha, identity servers, and such)
@@ -67,29 +74,176 @@ class TlsConfig(Config):
             "use_insecure_ssl_client_just_for_testing_do_not_use"
         )
 
+        self.tls_certificate = None
+        self.tls_private_key = None
+
+    def is_disk_cert_valid(self, allow_self_signed=True):
+        """
+        Is the certificate we have on disk valid, and if so, for how long?
+
+        Args:
+            allow_self_signed (bool): Should we allow the certificate we
+                read to be self signed?
+
+        Returns:
+            int: Days remaining of certificate validity.
+            None: No certificate exists.
+        """
+        if not os.path.exists(self.tls_certificate_file):
+            return None
+
+        try:
+            with open(self.tls_certificate_file, 'rb') as f:
+                cert_pem = f.read()
+        except Exception:
+            logger.exception("Failed to read existing certificate off disk!")
+            raise
+
+        try:
+            tls_certificate = crypto.load_certificate(crypto.FILETYPE_PEM, cert_pem)
+        except Exception:
+            logger.exception("Failed to parse existing certificate off disk!")
+            raise
+
+        if not allow_self_signed:
+            if tls_certificate.get_subject() == tls_certificate.get_issuer():
+                raise ValueError(
+                    "TLS Certificate is self signed, and this is not permitted"
+                )
+
+        # YYYYMMDDhhmmssZ -- in UTC
+        expires_on = datetime.strptime(
+            tls_certificate.get_notAfter().decode('ascii'), "%Y%m%d%H%M%SZ"
+        )
+        now = datetime.utcnow()
+        days_remaining = (expires_on - now).days
+        return days_remaining
+
+    def read_certificate_from_disk(self, require_cert_and_key):
+        """
+        Read the certificates and private key from disk.
+
+        Args:
+            require_cert_and_key (bool): set to True to throw an error if the certificate
+                and key file are not given
+        """
+        if require_cert_and_key:
+            self.tls_private_key = self.read_tls_private_key()
+            self.tls_certificate = self.read_tls_certificate()
+        elif self.tls_certificate_file:
+            # we only need the certificate for the tls_fingerprints. Reload it if we
+            # can, but it's not a fatal error if we can't.
+            try:
+                self.tls_certificate = self.read_tls_certificate()
+            except Exception as e:
+                logger.info(
+                    "Unable to read TLS certificate (%s). Ignoring as no "
+                    "tls listeners enabled.", e,
+                )
+
+        self.tls_fingerprints = list(self._original_tls_fingerprints)
+
+        if self.tls_certificate:
+            # Check that our own certificate is included in the list of fingerprints
+            # and include it if it is not.
+            x509_certificate_bytes = crypto.dump_certificate(
+                crypto.FILETYPE_ASN1, self.tls_certificate
+            )
+            sha256_fingerprint = encode_base64(sha256(x509_certificate_bytes).digest())
+            sha256_fingerprints = set(f["sha256"] for f in self.tls_fingerprints)
+            if sha256_fingerprint not in sha256_fingerprints:
+                self.tls_fingerprints.append({u"sha256": sha256_fingerprint})
+
     def default_config(self, config_dir_path, server_name, **kwargs):
         base_key_name = os.path.join(config_dir_path, server_name)
 
         tls_certificate_path = base_key_name + ".tls.crt"
         tls_private_key_path = base_key_name + ".tls.key"
-        tls_dh_params_path = base_key_name + ".tls.dh"
 
-        return """\
-        # PEM encoded X509 certificate for TLS.
-        # You can replace the self-signed certificate that synapse
-        # autogenerates on launch with your own SSL certificate + key pair
-        # if you like.  Any required intermediary certificates can be
-        # appended after the primary certificate in hierarchical order.
-        tls_certificate_path: "%(tls_certificate_path)s"
+        # this is to avoid the max line length. Sorrynotsorry
+        proxypassline = (
+            'ProxyPass /.well-known/acme-challenge '
+            'http://localhost:8009/.well-known/acme-challenge'
+        )
+
+        return (
+            """\
+        ## TLS ##
+
+        # PEM-encoded X509 certificate for TLS.
+        # This certificate, as of Synapse 1.0, will need to be a valid and verifiable
+        # certificate, signed by a recognised Certificate Authority.
+        #
+        # See 'ACME support' below to enable auto-provisioning this certificate via
+        # Let's Encrypt.
+        #
+        #tls_certificate_path: "%(tls_certificate_path)s"
+
+        # PEM-encoded private key for TLS
+        #
+        #tls_private_key_path: "%(tls_private_key_path)s"
+
+        # ACME support: This will configure Synapse to request a valid TLS certificate
+        # for your configured `server_name` via Let's Encrypt.
+        #
+        # Note that provisioning a certificate in this way requires port 80 to be
+        # routed to Synapse so that it can complete the http-01 ACME challenge.
+        # By default, if you enable ACME support, Synapse will attempt to listen on
+        # port 80 for incoming http-01 challenges - however, this will likely fail
+        # with 'Permission denied' or a similar error.
+        #
+        # There are a couple of potential solutions to this:
+        #
+        #  * If you already have an Apache, Nginx, or similar listening on port 80,
+        #    you can configure Synapse to use an alternate port, and have your web
+        #    server forward the requests. For example, assuming you set 'port: 8009'
+        #    below, on Apache, you would write:
+        #
+        #    %(proxypassline)s
+        #
+        #  * Alternatively, you can use something like `authbind` to give Synapse
+        #    permission to listen on port 80.
+        #
+        acme:
+            # ACME support is disabled by default. Uncomment the following line
+            # (and tls_certificate_path and tls_private_key_path above) to enable it.
+            #
+            #enabled: true
+
+            # Endpoint to use to request certificates. If you only want to test,
+            # use Let's Encrypt's staging url:
+            #     https://acme-staging.api.letsencrypt.org/directory
+            #
+            #url: https://acme-v01.api.letsencrypt.org/directory
+
+            # Port number to listen on for the HTTP-01 challenge. Change this if
+            # you are forwarding connections through Apache/Nginx/etc.
+            #
+            #port: 80
 
-        # PEM encoded private key for TLS
-        tls_private_key_path: "%(tls_private_key_path)s"
+            # Local addresses to listen on for incoming connections.
+            # Again, you may want to change this if you are forwarding connections
+            # through Apache/Nginx/etc.
+            #
+            #bind_addresses: ['::', '0.0.0.0']
 
-        # PEM dh parameters for ephemeral keys
-        tls_dh_params_path: "%(tls_dh_params_path)s"
+            # How many days remaining on a certificate before it is renewed.
+            #
+            #reprovision_threshold: 30
 
-        # Don't bind to the https port
-        no_tls: False
+            # The domain that the certificate should be for. Normally this
+            # should be the same as your Matrix domain (i.e., 'server_name'), but,
+            # by putting a file at 'https://<server_name>/.well-known/matrix/server',
+            # you can delegate incoming traffic to another server. If you do that,
+            # you should give the target of the delegation here.
+            #
+            # For example: if your 'server_name' is 'example.com', but
+            # 'https://example.com/.well-known/matrix/server' delegates to
+            # 'matrix.example.com', you should put 'matrix.example.com' here.
+            #
+            # If not set, defaults to your 'server_name'.
+            #
+            #domain: matrix.example.com
 
         # List of allowed TLS fingerprints for this server to publish along
         # with the signing keys for this server. Other matrix servers that
@@ -116,80 +270,44 @@ class TlsConfig(Config):
         #   openssl x509 -outform DER | openssl sha256 -binary | base64 | tr -d '='
         # or by checking matrix.org/federationtester/api/report?server_name=$host
         #
-        tls_fingerprints: []
-        # tls_fingerprints: [{"sha256": "<base64_encoded_sha256_fingerprint>"}]
-        """ % locals()
+        #tls_fingerprints: [{"sha256": "<base64_encoded_sha256_fingerprint>"}]
 
-    def read_tls_certificate(self, cert_path):
-        cert_pem = self.read_file(cert_path, "tls_certificate")
-        return crypto.load_certificate(crypto.FILETYPE_PEM, cert_pem)
+        """
+            % locals()
+        )
 
-    def read_tls_private_key(self, private_key_path):
-        private_key_pem = self.read_file(private_key_path, "tls_private_key")
-        return crypto.load_privatekey(crypto.FILETYPE_PEM, private_key_pem)
+    def read_tls_certificate(self):
+        """Reads the TLS certificate from the configured file, and returns it
 
-    def generate_files(self, config):
-        tls_certificate_path = config["tls_certificate_path"]
-        tls_private_key_path = config["tls_private_key_path"]
-        tls_dh_params_path = config["tls_dh_params_path"]
-
-        if not self.path_exists(tls_private_key_path):
-            with open(tls_private_key_path, "wb") as private_key_file:
-                tls_private_key = crypto.PKey()
-                tls_private_key.generate_key(crypto.TYPE_RSA, 2048)
-                private_key_pem = crypto.dump_privatekey(
-                    crypto.FILETYPE_PEM, tls_private_key
-                )
-                private_key_file.write(private_key_pem)
-        else:
-            with open(tls_private_key_path) as private_key_file:
-                private_key_pem = private_key_file.read()
-                tls_private_key = crypto.load_privatekey(
-                    crypto.FILETYPE_PEM, private_key_pem
+        Also checks if it is self-signed, and warns if so
+
+        Returns:
+            OpenSSL.crypto.X509: the certificate
+        """
+        cert_path = self.tls_certificate_file
+        logger.info("Loading TLS certificate from %s", cert_path)
+        cert_pem = self.read_file(cert_path, "tls_certificate_path")
+        cert = crypto.load_certificate(crypto.FILETYPE_PEM, cert_pem)
+
+        # Check if it is self-signed, and issue a warning if so.
+        if cert.get_issuer() == cert.get_subject():
+            warnings.warn(
+                (
+                    "Self-signed TLS certificates will not be accepted by Synapse 1.0. "
+                    "Please either provide a valid certificate, or use Synapse's ACME "
+                    "support to provision one."
                 )
+            )
 
-        if not self.path_exists(tls_certificate_path):
-            with open(tls_certificate_path, "wb") as certificate_file:
-                cert = crypto.X509()
-                subject = cert.get_subject()
-                subject.CN = config["server_name"]
-
-                cert.set_serial_number(1000)
-                cert.gmtime_adj_notBefore(0)
-                cert.gmtime_adj_notAfter(10 * 365 * 24 * 60 * 60)
-                cert.set_issuer(cert.get_subject())
-                cert.set_pubkey(tls_private_key)
-
-                cert.sign(tls_private_key, 'sha256')
-
-                cert_pem = crypto.dump_certificate(crypto.FILETYPE_PEM, cert)
-
-                certificate_file.write(cert_pem)
-
-        if not self.path_exists(tls_dh_params_path):
-            if GENERATE_DH_PARAMS:
-                subprocess.check_call([
-                    "openssl", "dhparam",
-                    "-outform", "PEM",
-                    "-out", tls_dh_params_path,
-                    "2048"
-                ])
-            else:
-                with open(tls_dh_params_path, "w") as dh_params_file:
-                    dh_params_file.write(
-                        "2048-bit DH parameters taken from rfc3526\n"
-                        "-----BEGIN DH PARAMETERS-----\n"
-                        "MIIBCAKCAQEA///////////JD9qiIWjC"
-                        "NMTGYouA3BzRKQJOCIpnzHQCC76mOxOb\n"
-                        "IlFKCHmONATd75UZs806QxswKwpt8l8U"
-                        "N0/hNW1tUcJF5IW1dmJefsb0TELppjft\n"
-                        "awv/XLb0Brft7jhr+1qJn6WunyQRfEsf"
-                        "5kkoZlHs5Fs9wgB8uKFjvwWY2kg2HFXT\n"
-                        "mmkWP6j9JM9fg2VdI9yjrZYcYvNWIIVS"
-                        "u57VKQdwlpZtZww1Tkq8mATxdGwIyhgh\n"
-                        "fDKQXkYuNs474553LBgOhgObJ4Oi7Aei"
-                        "j7XFXfBvTFLJ3ivL9pVYFxg5lUl86pVq\n"
-                        "5RXSJhiY+gUQFXKOWoqsqmj/////////"
-                        "/wIBAg==\n"
-                        "-----END DH PARAMETERS-----\n"
-                    )
+        return cert
+
+    def read_tls_private_key(self):
+        """Reads the TLS private key from the configured file, and returns it
+
+        Returns:
+            OpenSSL.crypto.PKey: the private key
+        """
+        private_key_path = self.tls_private_key_file
+        logger.info("Loading TLS key from %s", private_key_path)
+        private_key_pem = self.read_file(private_key_path, "tls_private_key_path")
+        return crypto.load_privatekey(crypto.FILETYPE_PEM, private_key_pem)
diff --git a/synapse/config/user_directory.py b/synapse/config/user_directory.py
index 38e8947843..fab3a7d1c8 100644
--- a/synapse/config/user_directory.py
+++ b/synapse/config/user_directory.py
@@ -40,5 +40,5 @@ class UserDirectoryConfig(Config):
         # on your database to tell it to rebuild the user_directory search indexes.
         #
         #user_directory:
-        #   search_all_users: false
+        #  search_all_users: false
         """
diff --git a/synapse/config/voip.py b/synapse/config/voip.py
index d07bd24ffd..257f7c86e7 100644
--- a/synapse/config/voip.py
+++ b/synapse/config/voip.py
@@ -27,20 +27,24 @@ class VoipConfig(Config):
 
     def default_config(self, **kwargs):
         return """\
-        ## Turn ##
+        ## TURN ##
 
         # The public URIs of the TURN server to give to clients
+        #
         #turn_uris: []
 
         # The shared secret used to compute passwords for the TURN server
+        #
         #turn_shared_secret: "YOUR_SHARED_SECRET"
 
         # The Username and password if the TURN server needs them and
         # does not use a token
+        #
         #turn_username: "TURNSERVER_USERNAME"
         #turn_password: "TURNSERVER_PASSWORD"
 
         # How long generated TURN credentials last
+        #
         turn_user_lifetime: "1h"
 
         # Whether guests should be allowed to use the TURN server.
@@ -48,5 +52,6 @@ class VoipConfig(Config):
         # However, it does introduce a slight security risk as it allows users to
         # connect to arbitrary endpoints without having first signed up for a
         # valid account (e.g. by passing a CAPTCHA).
+        #
         turn_allow_guests: True
         """