dendrite/internal/config/config.go

573 lines
19 KiB
Go

// Copyright 2017 Vector Creations 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.
package config
import (
"bytes"
"encoding/pem"
"fmt"
"io"
"io/ioutil"
"net/url"
"path/filepath"
"regexp"
"strings"
"github.com/matrix-org/dendrite/clientapi/auth/authtypes"
"github.com/matrix-org/gomatrixserverlib"
"github.com/sirupsen/logrus"
"golang.org/x/crypto/ed25519"
yaml "gopkg.in/yaml.v2"
jaegerconfig "github.com/uber/jaeger-client-go/config"
jaegermetrics "github.com/uber/jaeger-lib/metrics"
)
// keyIDRegexp defines allowable characters in Key IDs.
var keyIDRegexp = regexp.MustCompile("^ed25519:[a-zA-Z0-9_]+$")
// Version is the current version of the config format.
// This will change whenever we make breaking changes to the config format.
const Version = 1
// Dendrite contains all the config used by a dendrite process.
// Relative paths are resolved relative to the current working directory
type Dendrite struct {
// The version of the configuration file.
// If the version in a file doesn't match the current dendrite config
// version then we can give a clear error message telling the user
// to update their config file to the current version.
// The version of the file should only be different if there has
// been a breaking change to the config file format.
Version int `yaml:"version"`
Global Global `yaml:"global"`
AppServiceAPI AppServiceAPI `yaml:"app_service_api"`
ClientAPI ClientAPI `yaml:"client_api"`
EDUServer EDUServer `yaml:"edu_server"`
FederationAPI FederationAPI `yaml:"federation_api"`
FederationSender FederationSender `yaml:"federation_sender"`
KeyServer KeyServer `yaml:"key_server"`
MediaAPI MediaAPI `yaml:"media_api"`
RoomServer RoomServer `yaml:"room_server"`
SigningKeyServer SigningKeyServer `yaml:"signing_key_server"`
SyncAPI SyncAPI `yaml:"sync_api"`
UserAPI UserAPI `yaml:"user_api"`
MSCs MSCs `yaml:"mscs"`
// The config for tracing the dendrite servers.
Tracing struct {
// Set to true to enable tracer hooks. If false, no tracing is set up.
Enabled bool `yaml:"enabled"`
// The config for the jaeger opentracing reporter.
Jaeger jaegerconfig.Configuration `yaml:"jaeger"`
} `yaml:"tracing"`
// The config for logging informations. Each hook will be added to logrus.
Logging []LogrusHook `yaml:"logging"`
// Any information derived from the configuration options for later use.
Derived Derived `yaml:"-"`
}
// TODO: Kill Derived
type Derived struct {
Registration struct {
// Flows is a slice of flows, which represent one possible way that the client can authenticate a request.
// http://matrix.org/docs/spec/HEAD/client_server/r0.3.0.html#user-interactive-authentication-api
// As long as the generated flows only rely on config file options,
// we can generate them on startup and store them until needed
Flows []authtypes.Flow `json:"flows"`
// Params that need to be returned to the client during
// registration in order to complete registration stages.
Params map[string]interface{} `json:"params"`
}
// Application services parsed from their config files
// The paths of which were given above in the main config file
ApplicationServices []ApplicationService
// Meta-regexes compiled from all exclusive application service
// Regexes.
//
// When a user registers, we check that their username does not match any
// exclusive application service namespaces
ExclusiveApplicationServicesUsernameRegexp *regexp.Regexp
// When a user creates a room alias, we check that it isn't already
// reserved by an application service
ExclusiveApplicationServicesAliasRegexp *regexp.Regexp
// Note: An Exclusive Regex for room ID isn't necessary as we aren't blocking
// servers from creating RoomIDs in exclusive application service namespaces
}
type InternalAPIOptions struct {
Listen HTTPAddress `yaml:"listen"`
Connect HTTPAddress `yaml:"connect"`
}
type ExternalAPIOptions struct {
Listen HTTPAddress `yaml:"listen"`
}
// A Path on the filesystem.
type Path string
// A DataSource for opening a postgresql database using lib/pq.
type DataSource string
func (d DataSource) IsSQLite() bool {
return strings.HasPrefix(string(d), "file:")
}
func (d DataSource) IsPostgres() bool {
// commented line may not always be true?
// return strings.HasPrefix(string(d), "postgres:")
return !d.IsSQLite()
}
// A Topic in kafka.
type Topic string
// An Address to listen on.
type Address string
// An HTTPAddress to listen on, starting with either http:// or https://.
type HTTPAddress string
func (h HTTPAddress) Address() (Address, error) {
url, err := url.Parse(string(h))
if err != nil {
return "", err
}
return Address(url.Host), nil
}
// FileSizeBytes is a file size in bytes
type FileSizeBytes int64
// ThumbnailSize contains a single thumbnail size configuration
type ThumbnailSize struct {
// Maximum width of the thumbnail image
Width int `yaml:"width"`
// Maximum height of the thumbnail image
Height int `yaml:"height"`
// ResizeMethod is one of crop or scale.
// crop scales to fill the requested dimensions and crops the excess.
// scale scales to fit the requested dimensions and one dimension may be smaller than requested.
ResizeMethod string `yaml:"method,omitempty"`
}
// LogrusHook represents a single logrus hook. At this point, only parsing and
// verification of the proper values for type and level are done.
// Validity/integrity checks on the parameters are done when configuring logrus.
type LogrusHook struct {
// The type of hook, currently only "file" is supported.
Type string `yaml:"type"`
// The level of the logs to produce. Will output only this level and above.
Level string `yaml:"level"`
// The parameters for this hook.
Params map[string]interface{} `yaml:"params"`
}
// ConfigErrors stores problems encountered when parsing a config file.
// It implements the error interface.
type ConfigErrors []string
// Load a yaml config file for a server run as multiple processes or as a monolith.
// Checks the config to ensure that it is valid.
func Load(configPath string, monolith bool) (*Dendrite, error) {
configData, err := ioutil.ReadFile(configPath)
if err != nil {
return nil, err
}
basePath, err := filepath.Abs(".")
if err != nil {
return nil, err
}
// Pass the current working directory and ioutil.ReadFile so that they can
// be mocked in the tests
return loadConfig(basePath, configData, ioutil.ReadFile, monolith)
}
func loadConfig(
basePath string,
configData []byte,
readFile func(string) ([]byte, error),
monolithic bool,
) (*Dendrite, error) {
var c Dendrite
c.Defaults()
var err error
if err = yaml.Unmarshal(configData, &c); err != nil {
return nil, err
}
if err = c.check(monolithic); err != nil {
return nil, err
}
privateKeyPath := absPath(basePath, c.Global.PrivateKeyPath)
privateKeyData, err := readFile(privateKeyPath)
if err != nil {
return nil, err
}
if c.Global.KeyID, c.Global.PrivateKey, err = readKeyPEM(privateKeyPath, privateKeyData, true); err != nil {
return nil, err
}
for i, oldPrivateKey := range c.Global.OldVerifyKeys {
var oldPrivateKeyData []byte
oldPrivateKeyPath := absPath(basePath, oldPrivateKey.PrivateKeyPath)
oldPrivateKeyData, err = readFile(oldPrivateKeyPath)
if err != nil {
return nil, err
}
// NOTSPEC: Ordinarily we should enforce key ID formatting, but since there are
// a number of private keys out there with non-compatible symbols in them due
// to lack of validation in Synapse, we won't enforce that for old verify keys.
keyID, privateKey, perr := readKeyPEM(oldPrivateKeyPath, oldPrivateKeyData, false)
if perr != nil {
return nil, perr
}
c.Global.OldVerifyKeys[i].KeyID, c.Global.OldVerifyKeys[i].PrivateKey = keyID, privateKey
}
c.MediaAPI.AbsBasePath = Path(absPath(basePath, c.MediaAPI.BasePath))
// Generate data from config options
err = c.Derive()
if err != nil {
return nil, err
}
c.Wiring()
return &c, nil
}
// Derive generates data that is derived from various values provided in
// the config file.
func (config *Dendrite) Derive() error {
// Determine registrations flows based off config values
config.Derived.Registration.Params = make(map[string]interface{})
// TODO: Add email auth type
// TODO: Add MSISDN auth type
if config.ClientAPI.RecaptchaEnabled {
config.Derived.Registration.Params[authtypes.LoginTypeRecaptcha] = map[string]string{"public_key": config.ClientAPI.RecaptchaPublicKey}
config.Derived.Registration.Flows = append(config.Derived.Registration.Flows,
authtypes.Flow{Stages: []authtypes.LoginType{authtypes.LoginTypeRecaptcha}})
} else {
config.Derived.Registration.Flows = append(config.Derived.Registration.Flows,
authtypes.Flow{Stages: []authtypes.LoginType{authtypes.LoginTypeDummy}})
}
// Load application service configuration files
if err := loadAppServices(&config.AppServiceAPI, &config.Derived); err != nil {
return err
}
return nil
}
// SetDefaults sets default config values if they are not explicitly set.
func (c *Dendrite) Defaults() {
c.Version = 1
c.Global.Defaults()
c.ClientAPI.Defaults()
c.EDUServer.Defaults()
c.FederationAPI.Defaults()
c.FederationSender.Defaults()
c.KeyServer.Defaults()
c.MediaAPI.Defaults()
c.RoomServer.Defaults()
c.SigningKeyServer.Defaults()
c.SyncAPI.Defaults()
c.UserAPI.Defaults()
c.AppServiceAPI.Defaults()
c.MSCs.Defaults()
c.Wiring()
}
func (c *Dendrite) Verify(configErrs *ConfigErrors, isMonolith bool) {
type verifiable interface {
Verify(configErrs *ConfigErrors, isMonolith bool)
}
for _, c := range []verifiable{
&c.Global, &c.ClientAPI,
&c.EDUServer, &c.FederationAPI, &c.FederationSender,
&c.KeyServer, &c.MediaAPI, &c.RoomServer,
&c.SigningKeyServer, &c.SyncAPI, &c.UserAPI,
&c.AppServiceAPI, &c.MSCs,
} {
c.Verify(configErrs, isMonolith)
}
}
func (c *Dendrite) Wiring() {
c.ClientAPI.Matrix = &c.Global
c.EDUServer.Matrix = &c.Global
c.FederationAPI.Matrix = &c.Global
c.FederationSender.Matrix = &c.Global
c.KeyServer.Matrix = &c.Global
c.MediaAPI.Matrix = &c.Global
c.RoomServer.Matrix = &c.Global
c.SigningKeyServer.Matrix = &c.Global
c.SyncAPI.Matrix = &c.Global
c.UserAPI.Matrix = &c.Global
c.AppServiceAPI.Matrix = &c.Global
c.MSCs.Matrix = &c.Global
c.ClientAPI.Derived = &c.Derived
c.AppServiceAPI.Derived = &c.Derived
}
// Error returns a string detailing how many errors were contained within a
// configErrors type.
func (errs ConfigErrors) Error() string {
if len(errs) == 1 {
return errs[0]
}
return fmt.Sprintf(
"%s (and %d other problems)", errs[0], len(errs)-1,
)
}
// Add appends an error to the list of errors in this configErrors.
// It is a wrapper to the builtin append and hides pointers from
// the client code.
// This method is safe to use with an uninitialized configErrors because
// if it is nil, it will be properly allocated.
func (errs *ConfigErrors) Add(str string) {
*errs = append(*errs, str)
}
// checkNotEmpty verifies the given value is not empty in the configuration.
// If it is, adds an error to the list.
func checkNotEmpty(configErrs *ConfigErrors, key, value string) {
if value == "" {
configErrs.Add(fmt.Sprintf("missing config key %q", key))
}
}
// checkNotZero verifies the given value is not zero in the configuration.
// If it is, adds an error to the list.
func checkNotZero(configErrs *ConfigErrors, key string, value int64) {
if value == 0 {
configErrs.Add(fmt.Sprintf("missing config key %q", key))
}
}
// checkPositive verifies the given value is positive (zero included)
// in the configuration. If it is not, adds an error to the list.
func checkPositive(configErrs *ConfigErrors, key string, value int64) {
if value < 0 {
configErrs.Add(fmt.Sprintf("invalid value for config key %q: %d", key, value))
}
}
// checkURL verifies that the parameter is a valid URL
func checkURL(configErrs *ConfigErrors, key, value string) {
if value == "" {
configErrs.Add(fmt.Sprintf("missing config key %q", key))
return
}
url, err := url.Parse(value)
if err != nil {
configErrs.Add(fmt.Sprintf("config key %q contains invalid URL (%s)", key, err.Error()))
return
}
switch url.Scheme {
case "http":
case "https":
default:
configErrs.Add(fmt.Sprintf("config key %q URL should be http:// or https://", key))
return
}
}
// checkLogging verifies the parameters logging.* are valid.
func (config *Dendrite) checkLogging(configErrs *ConfigErrors) {
for _, logrusHook := range config.Logging {
checkNotEmpty(configErrs, "logging.type", string(logrusHook.Type))
checkNotEmpty(configErrs, "logging.level", string(logrusHook.Level))
}
}
// check returns an error type containing all errors found within the config
// file.
func (config *Dendrite) check(_ bool) error { // monolithic
var configErrs ConfigErrors
if config.Version != Version {
configErrs.Add(fmt.Sprintf(
"unknown config version %q, expected %q", config.Version, Version,
))
return configErrs
}
config.checkLogging(&configErrs)
// Due to how Golang manages its interface types, this condition is not redundant.
// In order to get the proper behaviour, it is necessary to return an explicit nil
// and not a nil configErrors.
// This is because the following equalities hold:
// error(nil) == nil
// error(configErrors(nil)) != nil
if configErrs != nil {
return configErrs
}
return nil
}
// absPath returns the absolute path for a given relative or absolute path.
func absPath(dir string, path Path) string {
if filepath.IsAbs(string(path)) {
// filepath.Join cleans the path so we should clean the absolute paths as well for consistency.
return filepath.Clean(string(path))
}
return filepath.Join(dir, string(path))
}
func readKeyPEM(path string, data []byte, enforceKeyIDFormat bool) (gomatrixserverlib.KeyID, ed25519.PrivateKey, error) {
for {
var keyBlock *pem.Block
keyBlock, data = pem.Decode(data)
if data == nil {
return "", nil, fmt.Errorf("no matrix private key PEM data in %q", path)
}
if keyBlock == nil {
return "", nil, fmt.Errorf("keyBlock is nil %q", path)
}
if keyBlock.Type == "MATRIX PRIVATE KEY" {
keyID := keyBlock.Headers["Key-ID"]
if keyID == "" {
return "", nil, fmt.Errorf("missing key ID in PEM data in %q", path)
}
if !strings.HasPrefix(keyID, "ed25519:") {
return "", nil, fmt.Errorf("key ID %q doesn't start with \"ed25519:\" in %q", keyID, path)
}
if enforceKeyIDFormat && !keyIDRegexp.MatchString(keyID) {
return "", nil, fmt.Errorf("key ID %q in %q contains illegal characters (use a-z, A-Z, 0-9 and _ only)", keyID, path)
}
_, privKey, err := ed25519.GenerateKey(bytes.NewReader(keyBlock.Bytes))
if err != nil {
return "", nil, err
}
return gomatrixserverlib.KeyID(keyID), privKey, nil
}
}
}
// AppServiceURL returns a HTTP URL for where the appservice component is listening.
func (config *Dendrite) AppServiceURL() string {
// Hard code the appservice server to talk HTTP for now.
// If we support HTTPS we need to think of a practical way to do certificate validation.
// People setting up servers shouldn't need to get a certificate valid for the public
// internet for an internal API.
return string(config.AppServiceAPI.InternalAPI.Connect)
}
// RoomServerURL returns an HTTP URL for where the roomserver is listening.
func (config *Dendrite) RoomServerURL() string {
// Hard code the roomserver to talk HTTP for now.
// If we support HTTPS we need to think of a practical way to do certificate validation.
// People setting up servers shouldn't need to get a certificate valid for the public
// internet for an internal API.
return string(config.RoomServer.InternalAPI.Connect)
}
// UserAPIURL returns an HTTP URL for where the userapi is listening.
func (config *Dendrite) UserAPIURL() string {
// Hard code the userapi to talk HTTP for now.
// If we support HTTPS we need to think of a practical way to do certificate validation.
// People setting up servers shouldn't need to get a certificate valid for the public
// internet for an internal API.
return string(config.UserAPI.InternalAPI.Connect)
}
// EDUServerURL returns an HTTP URL for where the EDU server is listening.
func (config *Dendrite) EDUServerURL() string {
// Hard code the EDU server to talk HTTP for now.
// If we support HTTPS we need to think of a practical way to do certificate validation.
// People setting up servers shouldn't need to get a certificate valid for the public
// internet for an internal API.
return string(config.EDUServer.InternalAPI.Connect)
}
// FederationSenderURL returns an HTTP URL for where the federation sender is listening.
func (config *Dendrite) FederationSenderURL() string {
// Hard code the federation sender server to talk HTTP for now.
// If we support HTTPS we need to think of a practical way to do certificate validation.
// People setting up servers shouldn't need to get a certificate valid for the public
// internet for an internal API.
return string(config.FederationSender.InternalAPI.Connect)
}
// SigningKeyServerURL returns an HTTP URL for where the signing key server is listening.
func (config *Dendrite) SigningKeyServerURL() string {
// Hard code the signing key server to talk HTTP for now.
// If we support HTTPS we need to think of a practical way to do certificate validation.
// People setting up servers shouldn't need to get a certificate valid for the public
// internet for an internal API.
return string(config.SigningKeyServer.InternalAPI.Connect)
}
// KeyServerURL returns an HTTP URL for where the key server is listening.
func (config *Dendrite) KeyServerURL() string {
// Hard code the key server to talk HTTP for now.
// If we support HTTPS we need to think of a practical way to do certificate validation.
// People setting up servers shouldn't need to get a certificate valid for the public
// internet for an internal API.
return string(config.KeyServer.InternalAPI.Connect)
}
// SetupTracing configures the opentracing using the supplied configuration.
func (config *Dendrite) SetupTracing(serviceName string) (closer io.Closer, err error) {
if !config.Tracing.Enabled {
return ioutil.NopCloser(bytes.NewReader([]byte{})), nil
}
return config.Tracing.Jaeger.InitGlobalTracer(
serviceName,
jaegerconfig.Logger(logrusLogger{logrus.StandardLogger()}),
jaegerconfig.Metrics(jaegermetrics.NullFactory),
)
}
// logrusLogger is a small wrapper that implements jaeger.Logger using logrus.
type logrusLogger struct {
l *logrus.Logger
}
func (l logrusLogger) Error(msg string) {
l.l.Error(msg)
}
func (l logrusLogger) Infof(msg string, args ...interface{}) {
l.l.Infof(msg, args...)
}