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Move TLS config into its own struct

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This commit is contained in:
Kristoffer Dalby 2022-06-03 10:14:14 +02:00
parent 5514a862dc
commit aee8aa1c61
2 changed files with 50 additions and 35 deletions
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18
app.go
View file

@ -689,7 +689,7 @@ func (h *Headscale) Serve() error {
func (h *Headscale) getTLSSettings() (*tls.Config, error) {
var err error
if h.cfg.TLSLetsEncryptHostname != "" {
if h.cfg.TLS.LetsEncrypt.Hostname != "" {
if !strings.HasPrefix(h.cfg.ServerURL, "https://") {
log.Warn().
Msg("Listening with TLS but ServerURL does not start with https://")
@ -697,15 +697,15 @@ func (h *Headscale) getTLSSettings() (*tls.Config, error) {
certManager := autocert.Manager{
Prompt: autocert.AcceptTOS,
HostPolicy: autocert.HostWhitelist(h.cfg.TLSLetsEncryptHostname),
Cache: autocert.DirCache(h.cfg.TLSLetsEncryptCacheDir),
HostPolicy: autocert.HostWhitelist(h.cfg.TLS.LetsEncrypt.Hostname),
Cache: autocert.DirCache(h.cfg.TLS.LetsEncrypt.CacheDir),
Client: &acme.Client{
DirectoryURL: h.cfg.ACMEURL,
},
Email: h.cfg.ACMEEmail,
}
switch h.cfg.TLSLetsEncryptChallengeType {
switch h.cfg.TLS.LetsEncrypt.ChallengeType {
case "TLS-ALPN-01":
// Configuration via autocert with TLS-ALPN-01 (https://tools.ietf.org/html/rfc8737)
// The RFC requires that the validation is done on port 443; in other words, headscale
@ -719,7 +719,7 @@ func (h *Headscale) getTLSSettings() (*tls.Config, error) {
go func() {
log.Fatal().
Caller().
Err(http.ListenAndServe(h.cfg.TLSLetsEncryptListen, certManager.HTTPHandler(http.HandlerFunc(h.redirect)))).
Err(http.ListenAndServe(h.cfg.TLS.LetsEncrypt.Listen, certManager.HTTPHandler(http.HandlerFunc(h.redirect)))).
Msg("failed to set up a HTTP server")
}()
@ -728,7 +728,7 @@ func (h *Headscale) getTLSSettings() (*tls.Config, error) {
default:
return nil, errUnsupportedLetsEncryptChallengeType
}
} else if h.cfg.TLSCertPath == "" {
} else if h.cfg.TLS.CertPath == "" {
if !strings.HasPrefix(h.cfg.ServerURL, "http://") {
log.Warn().Msg("Listening without TLS but ServerURL does not start with http://")
}
@ -741,16 +741,16 @@ func (h *Headscale) getTLSSettings() (*tls.Config, error) {
log.Info().Msg(fmt.Sprintf(
"Client authentication (mTLS) is \"%s\". See the docs to learn about configuring this setting.",
h.cfg.TLSClientAuthMode))
h.cfg.TLS.ClientAuthMode))
tlsConfig := &tls.Config{
ClientAuth: h.cfg.TLSClientAuthMode,
ClientAuth: h.cfg.TLS.ClientAuthMode,
NextProtos: []string{"http/1.1"},
Certificates: make([]tls.Certificate, 1),
MinVersion: tls.VersionTLS12,
}
tlsConfig.Certificates[0], err = tls.LoadX509KeyPair(h.cfg.TLSCertPath, h.cfg.TLSKeyPath)
tlsConfig.Certificates[0], err = tls.LoadX509KeyPair(h.cfg.TLS.CertPath, h.cfg.TLS.KeyPath)
return tlsConfig, err
}

67
config.go
View file

@ -39,14 +39,7 @@ type Config struct {
DBuser string
DBpass string
TLSLetsEncryptListen string
TLSLetsEncryptHostname string
TLSLetsEncryptCacheDir string
TLSLetsEncryptChallengeType string
TLSCertPath string
TLSKeyPath string
TLSClientAuthMode tls.ClientAuthType
TLS TLSConfig
ACMEURL string
ACMEEmail string
@ -65,6 +58,21 @@ type Config struct {
ACL ACLConfig
}
type TLSConfig struct {
CertPath string
KeyPath string
ClientAuthMode tls.ClientAuthType
LetsEncrypt LetsEncryptConfig
}
type LetsEncryptConfig struct {
Listen string
Hostname string
CacheDir string
ChallengeType string
}
type OIDCConfig struct {
Issuer string
ClientID string
@ -193,6 +201,30 @@ func LoadConfig(path string) error {
}
}
func GetTLSConfig() TLSConfig {
tlsClientAuthMode, _ := LookupTLSClientAuthMode(
viper.GetString("tls_client_auth_mode"),
)
return TLSConfig{
LetsEncrypt: LetsEncryptConfig{
Hostname: viper.GetString("tls_letsencrypt_hostname"),
Listen: viper.GetString("tls_letsencrypt_listen"),
CacheDir: AbsolutePathFromConfigPath(
viper.GetString("tls_letsencrypt_cache_dir"),
),
ChallengeType: viper.GetString("tls_letsencrypt_challenge_type"),
},
CertPath: AbsolutePathFromConfigPath(
viper.GetString("tls_cert_path"),
),
KeyPath: AbsolutePathFromConfigPath(
viper.GetString("tls_key_path"),
),
ClientAuthMode: tlsClientAuthMode,
}
}
func GetDERPConfig() DERPConfig {
serverEnabled := viper.GetBool("derp.server.enabled")
serverRegionID := viper.GetInt("derp.server.region_id")
@ -394,10 +426,6 @@ func GetHeadscaleConfig() Config {
Msgf("'ip_prefixes' not configured, falling back to default: %v", prefixes)
}
tlsClientAuthMode, _ := LookupTLSClientAuthMode(
viper.GetString("tls_client_auth_mode"),
)
return Config{
ServerURL: viper.GetString("server_url"),
Addr: viper.GetString("listen_addr"),
@ -425,20 +453,7 @@ func GetHeadscaleConfig() Config {
DBuser: viper.GetString("db_user"),
DBpass: viper.GetString("db_pass"),
TLSLetsEncryptHostname: viper.GetString("tls_letsencrypt_hostname"),
TLSLetsEncryptListen: viper.GetString("tls_letsencrypt_listen"),
TLSLetsEncryptCacheDir: AbsolutePathFromConfigPath(
viper.GetString("tls_letsencrypt_cache_dir"),
),
TLSLetsEncryptChallengeType: viper.GetString("tls_letsencrypt_challenge_type"),
TLSCertPath: AbsolutePathFromConfigPath(
viper.GetString("tls_cert_path"),
),
TLSKeyPath: AbsolutePathFromConfigPath(
viper.GetString("tls_key_path"),
),
TLSClientAuthMode: tlsClientAuthMode,
TLS: GetTLSConfig(),
DNSConfig: dnsConfig,