Enable (X)TLS hot reloading by default (#281)

Super BiuBiu

infra/conf/transport_internet.go

@@ -247,12 +247,13 @@ func readFileOrString(f string, s []string) ([]byte, error) {
 }
 
 type TLSCertConfig struct {
-	CertFile     string   `json:"certificateFile"`
-	CertStr      []string `json:"certificate"`
-	KeyFile      string   `json:"keyFile"`
-	KeyStr       []string `json:"key"`
-	Usage        string   `json:"usage"`
-	OcspStapling int64    `json:"ocspStapling"`
+	CertFile       string   `json:"certificateFile"`
+	CertStr        []string `json:"certificate"`
+	KeyFile        string   `json:"keyFile"`
+	KeyStr         []string `json:"key"`
+	Usage          string   `json:"usage"`
+	OcspStapling   uint64   `json:"ocspStapling"`
+	OneTimeLoading bool     `json:"oneTimeLoading"`
 }
 
 // Build implements Buildable.
@@ -285,7 +286,11 @@ func (c *TLSCertConfig) Build() (*tls.Certificate, error) {
 	default:
 		certificate.Usage = tls.Certificate_ENCIPHERMENT
 	}
-
+	if certificate.KeyPath == "" && certificate.CertificatePath == "" {
+		certificate.OneTimeLoading = true
+	} else {
+		certificate.OneTimeLoading = c.OneTimeLoading
+	}
 	certificate.OcspStapling = c.OcspStapling
 
 	return certificate, nil
@@ -333,18 +338,18 @@ func (c *TLSConfig) Build() (proto.Message, error) {
 }
 
 type XTLSCertConfig struct {
-	CertFile     string   `json:"certificateFile"`
-	CertStr      []string `json:"certificate"`
-	KeyFile      string   `json:"keyFile"`
-	KeyStr       []string `json:"key"`
-	Usage        string   `json:"usage"`
-	OcspStapling int64    `json:"ocspStapling"`
+	CertFile       string   `json:"certificateFile"`
+	CertStr        []string `json:"certificate"`
+	KeyFile        string   `json:"keyFile"`
+	KeyStr         []string `json:"key"`
+	Usage          string   `json:"usage"`
+	OcspStapling   uint64   `json:"ocspStapling"`
+	OneTimeLoading bool     `json:"oneTimeLoading"`
 }
 
 // Build implements Buildable.
 func (c *XTLSCertConfig) Build() (*xtls.Certificate, error) {
 	certificate := new(xtls.Certificate)
-
 	cert, err := readFileOrString(c.CertFile, c.CertStr)
 	if err != nil {
 		return nil, newError("failed to parse certificate").Base(err)
@@ -371,7 +376,11 @@ func (c *XTLSCertConfig) Build() (*xtls.Certificate, error) {
 	default:
 		certificate.Usage = xtls.Certificate_ENCIPHERMENT
 	}
-
+	if certificate.KeyPath == "" && certificate.CertificatePath == "" {
+		certificate.OneTimeLoading = true
+	} else {
+		certificate.OneTimeLoading = c.OneTimeLoading
+	}
 	certificate.OcspStapling = c.OcspStapling
 
 	return certificate, nil

transport/internet/tls/config.go

@@ -60,10 +60,16 @@ func (c *Config) BuildCertificates() []*tls.Certificate {
 			continue
 		}
 		certs = append(certs, &keyPair)
-		if entry.OcspStapling != 0 {
+		if !entry.OneTimeLoading {
+			var isOcspstapling bool
+			hotReloadCertInterval := uint64(3600)
+			if entry.OcspStapling != 0 {
+				hotReloadCertInterval = entry.OcspStapling
+				isOcspstapling = true
+			}
 			index := len(certs) - 1
 			go func(cert *tls.Certificate, index int) {
-				t := time.NewTicker(time.Duration(entry.OcspStapling) * time.Second)
+				t := time.NewTicker(time.Duration(hotReloadCertInterval) * time.Second)
 				for {
 					if entry.CertificatePath != "" && entry.KeyPath != "" {
 						newCert, err := filesystem.ReadFile(entry.CertificatePath)
@@ -93,10 +99,12 @@ func (c *Config) BuildCertificates() []*tls.Certificate {
 							cert = &newKeyPair
 						}
 					}
-					if newOCSPData, err := ocsp.GetOCSPForCert(cert.Certificate); err != nil {
-						newError("ignoring invalid OCSP").Base(err).AtWarning().WriteToLog()
-					} else if string(newOCSPData) != string(cert.OCSPStaple) {
-						cert.OCSPStaple = newOCSPData
+					if isOcspstapling {
+						if newOCSPData, err := ocsp.GetOCSPForCert(cert.Certificate); err != nil {
+							newError("ignoring invalid OCSP").Base(err).AtWarning().WriteToLog()
+						} else if string(newOCSPData) != string(cert.OCSPStaple) {
+							cert.OCSPStaple = newOCSPData
+						}
 					}
 					certs[index] = cert
 					<-t.C

transport/internet/tls/config.pb.go

@@ -84,11 +84,13 @@ type Certificate struct {
 	// TLS key in x509 format.
 	Key          []byte            `protobuf:"bytes,2,opt,name=key,proto3" json:"key,omitempty"`
 	Usage        Certificate_Usage `protobuf:"varint,3,opt,name=usage,proto3,enum=xray.transport.internet.tls.Certificate_Usage" json:"usage,omitempty"`
-	OcspStapling int64             `protobuf:"varint,4,opt,name=ocsp_stapling,json=ocspStapling,proto3" json:"ocsp_stapling,omitempty"`
+	OcspStapling uint64            `protobuf:"varint,4,opt,name=ocsp_stapling,json=ocspStapling,proto3" json:"ocsp_stapling,omitempty"`
 	// TLS certificate path
 	CertificatePath string `protobuf:"bytes,5,opt,name=certificate_path,json=certificatePath,proto3" json:"certificate_path,omitempty"`
 	// TLS Key path
 	KeyPath string `protobuf:"bytes,6,opt,name=key_path,json=keyPath,proto3" json:"key_path,omitempty"`
+	// If true, one-Time Loading
+	OneTimeLoading bool `protobuf:"varint,7,opt,name=One_time_loading,json=OneTimeLoading,proto3" json:"One_time_loading,omitempty"`
 }
 
 func (x *Certificate) Reset() {
@@ -144,7 +146,7 @@ func (x *Certificate) GetUsage() Certificate_Usage {
 	return Certificate_ENCIPHERMENT
 }
 
-func (x *Certificate) GetOcspStapling() int64 {
+func (x *Certificate) GetOcspStapling() uint64 {
 	if x != nil {
 		return x.OcspStapling
 	}
@@ -165,6 +167,13 @@ func (x *Certificate) GetKeyPath() string {
 	return ""
 }
 
+func (x *Certificate) GetOneTimeLoading() bool {
+	if x != nil {
+		return x.OneTimeLoading
+	}
+	return false
+}
+
 type Config struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -302,7 +311,7 @@ var file_transport_internet_tls_config_proto_rawDesc = []byte{
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 }
 
 var (

transport/internet/tls/config.proto

@@ -21,13 +21,16 @@ message Certificate {
 
   Usage usage = 3;
 
-  int64 ocsp_stapling = 4;
+  uint64 ocsp_stapling = 4;
 
   // TLS certificate path
   string certificate_path = 5;
 
   // TLS Key path
   string key_path = 6;
+
+  // If true, one-Time Loading
+  bool One_time_loading = 7;
 }
 
 message Config {

transport/internet/xtls/config.go

@@ -59,10 +59,16 @@ func (c *Config) BuildCertificates() []*xtls.Certificate {
 			continue
 		}
 		certs = append(certs, &keyPair)
-		if entry.OcspStapling != 0 {
+		if !entry.OneTimeLoading {
+			var isOcspstapling bool
+			hotRelodaInterval := uint64(3600)
+			if entry.OcspStapling != 0 {
+				hotRelodaInterval = entry.OcspStapling
+				isOcspstapling = true
+			}
 			index := len(certs) - 1
 			go func(cert *xtls.Certificate, index int) {
-				t := time.NewTicker(time.Duration(entry.OcspStapling) * time.Second)
+				t := time.NewTicker(time.Duration(hotRelodaInterval) * time.Second)
 				for {
 					if entry.CertificatePath != "" && entry.KeyPath != "" {
 						newCert, err := filesystem.ReadFile(entry.CertificatePath)
@@ -92,10 +98,12 @@ func (c *Config) BuildCertificates() []*xtls.Certificate {
 							cert = &newKeyPair
 						}
 					}
-					if newOCSPData, err := ocsp.GetOCSPForCert(cert.Certificate); err != nil {
-						newError("ignoring invalid OCSP").Base(err).AtWarning().WriteToLog()
-					} else if string(newOCSPData) != string(cert.OCSPStaple) {
-						cert.OCSPStaple = newOCSPData
+					if isOcspstapling {
+						if newOCSPData, err := ocsp.GetOCSPForCert(cert.Certificate); err != nil {
+							newError("ignoring invalid OCSP").Base(err).AtWarning().WriteToLog()
+						} else if string(newOCSPData) != string(cert.OCSPStaple) {
+							cert.OCSPStaple = newOCSPData
+						}
 					}
 					certs[index] = cert
 					<-t.C

transport/internet/xtls/config.pb.go

@@ -84,11 +84,13 @@ type Certificate struct {
 	// TLS key in x509 format.
 	Key          []byte            `protobuf:"bytes,2,opt,name=key,proto3" json:"key,omitempty"`
 	Usage        Certificate_Usage `protobuf:"varint,3,opt,name=usage,proto3,enum=xray.transport.internet.xtls.Certificate_Usage" json:"usage,omitempty"`
-	OcspStapling int64             `protobuf:"varint,4,opt,name=ocsp_stapling,json=ocspStapling,proto3" json:"ocsp_stapling,omitempty"`
+	OcspStapling uint64            `protobuf:"varint,4,opt,name=ocsp_stapling,json=ocspStapling,proto3" json:"ocsp_stapling,omitempty"`
 	// TLS certificate path
 	CertificatePath string `protobuf:"bytes,5,opt,name=certificate_path,json=certificatePath,proto3" json:"certificate_path,omitempty"`
 	// TLS Key path
 	KeyPath string `protobuf:"bytes,6,opt,name=key_path,json=keyPath,proto3" json:"key_path,omitempty"`
+	// If true, one-Time Loading
+	OneTimeLoading bool `protobuf:"varint,7,opt,name=One_time_loading,json=OneTimeLoading,proto3" json:"One_time_loading,omitempty"`
 }
 
 func (x *Certificate) Reset() {
@@ -144,7 +146,7 @@ func (x *Certificate) GetUsage() Certificate_Usage {
 	return Certificate_ENCIPHERMENT
 }
 
-func (x *Certificate) GetOcspStapling() int64 {
+func (x *Certificate) GetOcspStapling() uint64 {
 	if x != nil {
 		return x.OcspStapling
 	}
@@ -165,6 +167,13 @@ func (x *Certificate) GetKeyPath() string {
 	return ""
 }
 
+func (x *Certificate) GetOneTimeLoading() bool {
+	if x != nil {
+		return x.OneTimeLoading
+	}
+	return false
+}
+
 type Config struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -302,7 +311,7 @@ var file_transport_internet_xtls_config_proto_rawDesc = []byte{
 	0x72, 0x6e, 0x65, 0x74, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67,
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@@ -312,54 +321,57 @@ var file_transport_internet_xtls_config_proto_rawDesc = []byte{
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+	0x33,
 }
 
 var (

transport/internet/xtls/config.proto

@@ -21,13 +21,16 @@ message Certificate {
 
   Usage usage = 3;
 
-  int64 ocsp_stapling = 4;
+  uint64 ocsp_stapling = 4;
 
   // TLS certificate path
   string certificate_path = 5;
 
   // TLS Key path
   string key_path = 6;
+
+  // If true, one-Time Loading
+  bool One_time_loading = 7;
 }
 
 message Config {