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Config templating (#5900)

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Template config files

* Imagine a system composed entirely of x, y, z etc and the basic operations..

Wait George, why XOR? Why not just neq?

George: Eh, I didn't think of that..

Co-Authored-By: Erik Johnston <erik@matrix.org>
This commit is contained in:
Jorik Schellekens 2019-08-28 13:12:22 +01:00 committed by GitHub
parent 7dc398586c
commit 6d97843793
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9 changed files with 366 additions and 46 deletions
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1
changelog.d/5900.feature Normal file
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@ -0,0 +1 @@
Add support for config templating.

16
docs/sample_config.yaml
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@ -205,9 +205,9 @@ listeners:
#
- port: 8008
tls: false
bind_addresses: ['::1', '127.0.0.1']
type: http
x_forwarded: true
bind_addresses: ['::1', '127.0.0.1']
resources:
- names: [client, federation]
@ -392,10 +392,10 @@ listeners:
# 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.
# ACME support is disabled by default. Set this to `true` and uncomment
# tls_certificate_path and tls_private_key_path above to enable it.
#
#enabled: true
enabled: False
# Endpoint to use to request certificates. If you only want to test,
# use Let's Encrypt's staging url:
@ -406,17 +406,17 @@ acme:
# Port number to listen on for the HTTP-01 challenge. Change this if
# you are forwarding connections through Apache/Nginx/etc.
#
#port: 80
port: 80
# 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']
bind_addresses: ['::', '0.0.0.0']
# How many days remaining on a certificate before it is renewed.
#
#reprovision_threshold: 30
reprovision_threshold: 30
# The domain that the certificate should be for. Normally this
# should be the same as your Matrix domain (i.e., 'server_name'), but,
@ -430,7 +430,7 @@ acme:
#
# If not set, defaults to your 'server_name'.
#
#domain: matrix.example.com
domain: matrix.example.com
# file to use for the account key. This will be generated if it doesn't
# exist.

37
synapse/config/_base.py
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@ -181,6 +181,11 @@ class Config(object):
generate_secrets=False,
report_stats=None,
open_private_ports=False,
listeners=None,
database_conf=None,
tls_certificate_path=None,
tls_private_key_path=None,
acme_domain=None,
):
"""Build a default configuration file
@ -207,6 +212,33 @@ class Config(object):
open_private_ports (bool): True to leave private ports (such as the non-TLS
HTTP listener) open to the internet.
listeners (list(dict)|None): A list of descriptions of the listeners
synapse should start with each of which specifies a port (str), a list of
resources (list(str)), tls (bool) and type (str). For example:
[{
"port": 8448,
"resources": [{"names": ["federation"]}],
"tls": True,
"type": "http",
},
{
"port": 443,
"resources": [{"names": ["client"]}],
"tls": False,
"type": "http",
}],
database (str|None): The database type to configure, either `psycog2`
or `sqlite3`.
tls_certificate_path (str|None): The path to the tls certificate.
tls_private_key_path (str|None): The path to the tls private key.
acme_domain (str|None): The domain acme will try to validate. If
specified acme will be enabled.
Returns:
str: the yaml config file
"""
@ -220,6 +252,11 @@ class Config(object):
generate_secrets=generate_secrets,
report_stats=report_stats,
open_private_ports=open_private_ports,
listeners=listeners,
database_conf=database_conf,
tls_certificate_path=tls_certificate_path,
tls_private_key_path=tls_private_key_path,
acme_domain=acme_domain,
)
)

27
synapse/config/database.py
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@ -13,6 +13,9 @@
# See the License for the specific language governing permissions and
# limitations under the License.
import os
from textwrap import indent
import yaml
from ._base import Config
@ -38,20 +41,28 @@ class DatabaseConfig(Config):
self.set_databasepath(config.get("database_path"))
def generate_config_section(self, data_dir_path, **kwargs):
database_path = os.path.join(data_dir_path, "homeserver.db")
return (
"""\
## Database ##
database:
# The database engine name
def generate_config_section(self, data_dir_path, database_conf, **kwargs):
if not database_conf:
database_path = os.path.join(data_dir_path, "homeserver.db")
database_conf = (
"""# The database engine name
name: "sqlite3"
# Arguments to pass to the engine
args:
# Path to the database
database: "%(database_path)s"
"""
% locals()
)
else:
database_conf = indent(yaml.dump(database_conf), " " * 10).lstrip()
return (
"""\
## Database ##
database:
%(database_conf)s
# Number of events to cache in memory.
#
#event_cache_size: 10K

84
synapse/config/server.py
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@ -17,8 +17,11 @@
import logging
import os.path
import re
from textwrap import indent
import attr
import yaml
from netaddr import IPSet
from synapse.api.room_versions import KNOWN_ROOM_VERSIONS
@ -352,7 +355,7 @@ class ServerConfig(Config):
return any(l["tls"] for l in self.listeners)
def generate_config_section(
self, server_name, data_dir_path, open_private_ports, **kwargs
self, server_name, data_dir_path, open_private_ports, listeners, **kwargs
):
_, bind_port = parse_and_validate_server_name(server_name)
if bind_port is not None:
@ -366,11 +369,68 @@ class ServerConfig(Config):
# Bring DEFAULT_ROOM_VERSION into the local-scope for use in the
# default config string
default_room_version = DEFAULT_ROOM_VERSION
secure_listeners = []
unsecure_listeners = []
private_addresses = ["::1", "127.0.0.1"]
if listeners:
for listener in listeners:
if listener["tls"]:
secure_listeners.append(listener)
else:
# If we don't want open ports we need to bind the listeners
# to some address other than 0.0.0.0. Here we chose to use
# localhost.
# If the addresses are already bound we won't overwrite them
# however.
if not open_private_ports:
listener.setdefault("bind_addresses", private_addresses)
unsecure_http_binding = "port: %i\n tls: false" % (unsecure_port,)
if not open_private_ports:
unsecure_http_binding += (
"\n bind_addresses: ['::1', '127.0.0.1']"
unsecure_listeners.append(listener)
secure_http_bindings = indent(
yaml.dump(secure_listeners), " " * 10
).lstrip()
unsecure_http_bindings = indent(
yaml.dump(unsecure_listeners), " " * 10
).lstrip()
if not unsecure_listeners:
unsecure_http_bindings = (
"""- port: %(unsecure_port)s
tls: false
type: http
x_forwarded: true"""
% locals()
)
if not open_private_ports:
unsecure_http_bindings += (
"\n bind_addresses: ['::1', '127.0.0.1']"
)
unsecure_http_bindings += """
resources:
- names: [client, federation]
compress: false"""
if listeners:
# comment out this block
unsecure_http_bindings = "#" + re.sub(
"\n {10}",
lambda match: match.group(0) + "#",
unsecure_http_bindings,
)
if not secure_listeners:
secure_http_bindings = (
"""#- port: %(bind_port)s
# type: http
# tls: true
# resources:
# - names: [client, federation]"""
% locals()
)
return (
@ -556,11 +616,7 @@ class ServerConfig(Config):
# 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]
%(secure_http_bindings)s
# Unsecure HTTP listener: for when matrix traffic passes through a reverse proxy
# that unwraps TLS.
@ -568,13 +624,7 @@ class ServerConfig(Config):
# If you plan to use a reverse proxy, please see
# https://github.com/matrix-org/synapse/blob/master/docs/reverse_proxy.rst.
#
- %(unsecure_http_binding)s
type: http
x_forwarded: true
resources:
- names: [client, federation]
compress: false
%(unsecure_http_bindings)s
# example additional_resources:
#

50
synapse/config/tls.py
View File

@ -239,12 +239,38 @@ class TlsConfig(Config):
self.tls_fingerprints.append({"sha256": sha256_fingerprint})
def generate_config_section(
self, config_dir_path, server_name, data_dir_path, **kwargs
self,
config_dir_path,
server_name,
data_dir_path,
tls_certificate_path,
tls_private_key_path,
acme_domain,
**kwargs
):
"""If the acme_domain is specified acme will be enabled.
If the TLS paths are not specified the default will be certs in the
config directory"""
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"
if bool(tls_certificate_path) != bool(tls_private_key_path):
raise ConfigError(
"Please specify both a cert path and a key path or neither."
)
tls_enabled = (
"" if tls_certificate_path and tls_private_key_path or acme_domain else "#"
)
if not tls_certificate_path:
tls_certificate_path = base_key_name + ".tls.crt"
if not tls_private_key_path:
tls_private_key_path = base_key_name + ".tls.key"
acme_enabled = bool(acme_domain)
acme_domain = "matrix.example.com"
default_acme_account_file = os.path.join(data_dir_path, "acme_account.key")
# this is to avoid the max line length. Sorrynotsorry
@ -269,11 +295,11 @@ class TlsConfig(Config):
# instance, if using certbot, use `fullchain.pem` as your certificate,
# not `cert.pem`).
#
#tls_certificate_path: "%(tls_certificate_path)s"
%(tls_enabled)stls_certificate_path: "%(tls_certificate_path)s"
# PEM-encoded private key for TLS
#
#tls_private_key_path: "%(tls_private_key_path)s"
%(tls_enabled)stls_private_key_path: "%(tls_private_key_path)s"
# Whether to verify TLS server certificates for outbound federation requests.
#
@ -340,10 +366,10 @@ class TlsConfig(Config):
# 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.
# ACME support is disabled by default. Set this to `true` and uncomment
# tls_certificate_path and tls_private_key_path above to enable it.
#
#enabled: true
enabled: %(acme_enabled)s
# Endpoint to use to request certificates. If you only want to test,
# use Let's Encrypt's staging url:
@ -354,17 +380,17 @@ class TlsConfig(Config):
# Port number to listen on for the HTTP-01 challenge. Change this if
# you are forwarding connections through Apache/Nginx/etc.
#
#port: 80
port: 80
# 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']
bind_addresses: ['::', '0.0.0.0']
# How many days remaining on a certificate before it is renewed.
#
#reprovision_threshold: 30
reprovision_threshold: 30
# The domain that the certificate should be for. Normally this
# should be the same as your Matrix domain (i.e., 'server_name'), but,
@ -378,7 +404,7 @@ class TlsConfig(Config):
#
# If not set, defaults to your 'server_name'.
#
#domain: matrix.example.com
domain: %(acme_domain)s
# file to use for the account key. This will be generated if it doesn't
# exist.

52
tests/config/test_database.py Normal file
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@ -0,0 +1,52 @@
# -*- coding: utf-8 -*-
# Copyright 2019 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.
import yaml
from synapse.config.database import DatabaseConfig
from tests import unittest
class DatabaseConfigTestCase(unittest.TestCase):
def test_database_configured_correctly_no_database_conf_param(self):
conf = yaml.safe_load(
DatabaseConfig().generate_config_section("/data_dir_path", None)
)
expected_database_conf = {
"name": "sqlite3",
"args": {"database": "/data_dir_path/homeserver.db"},
}
self.assertEqual(conf["database"], expected_database_conf)
def test_database_configured_correctly_database_conf_param(self):
database_conf = {
"name": "my super fast datastore",
"args": {
"user": "matrix",
"password": "synapse_database_password",
"host": "synapse_database_host",
"database": "matrix",
},
}
conf = yaml.safe_load(
DatabaseConfig().generate_config_section("/data_dir_path", database_conf)
)
self.assertEqual(conf["database"], database_conf)

101
tests/config/test_server.py
View File

@ -13,7 +13,9 @@
# See the License for the specific language governing permissions and
# limitations under the License.
from synapse.config.server import is_threepid_reserved
import yaml
from synapse.config.server import ServerConfig, is_threepid_reserved
from tests import unittest
@ -29,3 +31,100 @@ class ServerConfigTestCase(unittest.TestCase):
self.assertTrue(is_threepid_reserved(config, user1))
self.assertFalse(is_threepid_reserved(config, user3))
self.assertFalse(is_threepid_reserved(config, user1_msisdn))
def test_unsecure_listener_no_listeners_open_private_ports_false(self):
conf = yaml.safe_load(
ServerConfig().generate_config_section(
"che.org", "/data_dir_path", False, None
)
)
expected_listeners = [
{
"port": 8008,
"tls": False,
"type": "http",
"x_forwarded": True,
"bind_addresses": ["::1", "127.0.0.1"],
"resources": [{"names": ["client", "federation"], "compress": False}],
}
]
self.assertEqual(conf["listeners"], expected_listeners)
def test_unsecure_listener_no_listeners_open_private_ports_true(self):
conf = yaml.safe_load(
ServerConfig().generate_config_section(
"che.org", "/data_dir_path", True, None
)
)
expected_listeners = [
{
"port": 8008,
"tls": False,
"type": "http",
"x_forwarded": True,
"resources": [{"names": ["client", "federation"], "compress": False}],
}
]
self.assertEqual(conf["listeners"], expected_listeners)
def test_listeners_set_correctly_open_private_ports_false(self):
listeners = [
{
"port": 8448,
"resources": [{"names": ["federation"]}],
"tls": True,
"type": "http",
},
{
"port": 443,
"resources": [{"names": ["client"]}],
"tls": False,
"type": "http",
},
]
conf = yaml.safe_load(
ServerConfig().generate_config_section(
"this.one.listens", "/data_dir_path", True, listeners
)
)
self.assertEqual(conf["listeners"], listeners)
def test_listeners_set_correctly_open_private_ports_true(self):
listeners = [
{
"port": 8448,
"resources": [{"names": ["federation"]}],
"tls": True,
"type": "http",
},
{
"port": 443,
"resources": [{"names": ["client"]}],
"tls": False,
"type": "http",
},
{
"port": 1243,
"resources": [{"names": ["client"]}],
"tls": False,
"type": "http",
"bind_addresses": ["this_one_is_bound"],
},
]
expected_listeners = listeners.copy()
expected_listeners[1]["bind_addresses"] = ["::1", "127.0.0.1"]
conf = yaml.safe_load(
ServerConfig().generate_config_section(
"this.one.listens", "/data_dir_path", True, listeners
)
)
self.assertEqual(conf["listeners"], expected_listeners)

44
tests/config/test_tls.py
View File

@ -16,6 +16,8 @@
import os
import yaml
from OpenSSL import SSL
from synapse.config.tls import ConfigError, TlsConfig
@ -191,3 +193,45 @@ s4niecZKPBizL6aucT59CsunNmmb5Glq8rlAcU+1ZTZZzGYqVYhF6axB9Qg=
self.assertEqual(cf._verify_ssl._options & SSL.OP_NO_TLSv1, 0)
self.assertEqual(cf._verify_ssl._options & SSL.OP_NO_TLSv1_1, 0)
self.assertEqual(cf._verify_ssl._options & SSL.OP_NO_TLSv1_2, 0)
def test_acme_disabled_in_generated_config_no_acme_domain_provied(self):
"""
Checks acme is disabled by default.
"""
conf = TestConfig()
conf.read_config(
yaml.safe_load(
TestConfig().generate_config_section(
"/config_dir_path",
"my_super_secure_server",
"/data_dir_path",
"/tls_cert_path",
"tls_private_key",
None, # This is the acme_domain
)
),
"/config_dir_path",
)
self.assertFalse(conf.acme_enabled)
def test_acme_enabled_in_generated_config_domain_provided(self):
"""
Checks acme is enabled if the acme_domain arg is set to some string.
"""
conf = TestConfig()
conf.read_config(
yaml.safe_load(
TestConfig().generate_config_section(
"/config_dir_path",
"my_super_secure_server",
"/data_dir_path",
"/tls_cert_path",
"tls_private_key",
"my_supe_secure_server", # This is the acme_domain
)
),
"/config_dir_path",
)
self.assertTrue(conf.acme_enabled)