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Merge pull request #553 from XTLS/tls/reject-unknown-sni

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Add: reject unknown SNI
This commit is contained in:
Arthur Morgan 2021-09-08 00:48:51 +08:00 committed by GitHub
commit 66b58e6076
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GPG Key ID: 4AEE18F83AFDEB23
9 changed files with 79 additions and 31 deletions
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4
infra/conf/transport_internet.go
View File

@ -322,6 +322,7 @@ type TLSConfig struct {
CipherSuites string `json:"cipherSuites"` CipherSuites string `json:"cipherSuites"`
PreferServerCipherSuites bool `json:"preferServerCipherSuites"` PreferServerCipherSuites bool `json:"preferServerCipherSuites"`
Fingerprint string `json:"fingerprint"` Fingerprint string `json:"fingerprint"`
RejectUnknownSNI bool `json:"rejectUnknownSni"`
} }
// Build implements Buildable. // Build implements Buildable.
@ -350,6 +351,7 @@ func (c *TLSConfig) Build() (proto.Message, error) {
config.CipherSuites = c.CipherSuites config.CipherSuites = c.CipherSuites
config.PreferServerCipherSuites = c.PreferServerCipherSuites config.PreferServerCipherSuites = c.PreferServerCipherSuites
config.Fingerprint = strings.ToLower(c.Fingerprint) config.Fingerprint = strings.ToLower(c.Fingerprint)
config.RejectUnknownSni = c.RejectUnknownSNI
return config, nil return config, nil
} }
@ -413,6 +415,7 @@ type XTLSConfig struct {
MaxVersion string `json:"maxVersion"` MaxVersion string `json:"maxVersion"`
CipherSuites string `json:"cipherSuites"` CipherSuites string `json:"cipherSuites"`
PreferServerCipherSuites bool `json:"preferServerCipherSuites"` PreferServerCipherSuites bool `json:"preferServerCipherSuites"`
RejectUnknownSNI bool `json:"rejectUnknownSni"`
} }
// Build implements Buildable. // Build implements Buildable.
@ -440,6 +443,7 @@ func (c *XTLSConfig) Build() (proto.Message, error) {
config.MaxVersion = c.MaxVersion config.MaxVersion = c.MaxVersion
config.CipherSuites = c.CipherSuites config.CipherSuites = c.CipherSuites
config.PreferServerCipherSuites = c.PreferServerCipherSuites config.PreferServerCipherSuites = c.PreferServerCipherSuites
config.RejectUnknownSni = c.RejectUnknownSNI
return config, nil return config, nil
} }

11
transport/internet/tls/config.go
View File

@ -211,13 +211,13 @@ func getGetCertificateFunc(c *tls.Config, ca []*Certificate) func(hello *tls.Cli
} }
} }
func getNewGetCertficateFunc(certs []*tls.Certificate) func(hello *tls.ClientHelloInfo) (*tls.Certificate, error) { func getNewGetCertificateFunc(certs []*tls.Certificate, rejectUnknownSNI bool) func(hello *tls.ClientHelloInfo) (*tls.Certificate, error) {
return func(hello *tls.ClientHelloInfo) (*tls.Certificate, error) { return func(hello *tls.ClientHelloInfo) (*tls.Certificate, error) {
if len(certs) == 0 { if len(certs) == 0 {
return nil, newError("empty certs") return nil, errNoCertificates
} }
sni := strings.ToLower(hello.ServerName) sni := strings.ToLower(hello.ServerName)
if len(certs) == 1 || sni == "" { if !rejectUnknownSNI && (len(certs) == 1 || sni == "") {
return certs[0], nil return certs[0], nil
} }
gsni := "*" gsni := "*"
@ -234,6 +234,9 @@ func getNewGetCertficateFunc(certs []*tls.Certificate) func(hello *tls.ClientHel
} }
} }
} }
if rejectUnknownSNI {
return nil, errNoCertificates
}
return certs[0], nil return certs[0], nil
} }
} }
@ -275,7 +278,7 @@ func (c *Config) GetTLSConfig(opts ...Option) *tls.Config {
if len(caCerts) > 0 { if len(caCerts) > 0 {
config.GetCertificate = getGetCertificateFunc(config, caCerts) config.GetCertificate = getGetCertificateFunc(config, caCerts)
} else { } else {
config.GetCertificate = getNewGetCertficateFunc(c.BuildCertificates()) config.GetCertificate = getNewGetCertificateFunc(c.BuildCertificates(), c.RejectUnknownSni)
} }
if sn := c.parseServerName(); len(sn) > 0 { if sn := c.parseServerName(); len(sn) > 0 {

35
transport/internet/tls/config.pb.go
View File

@ -1,7 +1,7 @@
// Code generated by protoc-gen-go. DO NOT EDIT. // Code generated by protoc-gen-go. DO NOT EDIT.
// versions: // versions:
// protoc-gen-go v1.25.0 // protoc-gen-go v1.25.0
// protoc v3.15.6 // protoc v3.15.8
// source: transport/internet/tls/config.proto // source: transport/internet/tls/config.proto
package tls package tls
@ -201,7 +201,8 @@ type Config struct {
// Whether the server selects its most preferred ciphersuite. // Whether the server selects its most preferred ciphersuite.
PreferServerCipherSuites bool `protobuf:"varint,10,opt,name=prefer_server_cipher_suites,json=preferServerCipherSuites,proto3" json:"prefer_server_cipher_suites,omitempty"` PreferServerCipherSuites bool `protobuf:"varint,10,opt,name=prefer_server_cipher_suites,json=preferServerCipherSuites,proto3" json:"prefer_server_cipher_suites,omitempty"`
// TLS Client Hello fingerprint (uTLS). // TLS Client Hello fingerprint (uTLS).
Fingerprint string `protobuf:"bytes,11,opt,name=fingerprint,proto3" json:"fingerprint,omitempty"` Fingerprint string `protobuf:"bytes,11,opt,name=fingerprint,proto3" json:"fingerprint,omitempty"`
RejectUnknownSni bool `protobuf:"varint,12,opt,name=reject_unknown_sni,json=rejectUnknownSni,proto3" json:"reject_unknown_sni,omitempty"`
} }
func (x *Config) Reset() { func (x *Config) Reset() {
@ -313,6 +314,13 @@ func (x *Config) GetFingerprint() string {
return "" return ""
} }
func (x *Config) GetRejectUnknownSni() bool {
if x != nil {
return x.RejectUnknownSni
}
return false
}
var File_transport_internet_tls_config_proto protoreflect.FileDescriptor var File_transport_internet_tls_config_proto protoreflect.FileDescriptor
var file_transport_internet_tls_config_proto_rawDesc = []byte{ var file_transport_internet_tls_config_proto_rawDesc = []byte{
@ -342,7 +350,7 @@ var file_transport_internet_tls_config_proto_rawDesc = []byte{
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@ -373,15 +381,18 @@ var file_transport_internet_tls_config_proto_rawDesc = []byte{
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} }
var ( var (

2
transport/internet/tls/config.proto
View File

@ -67,4 +67,6 @@ message Config {
// TLS Client Hello fingerprint (uTLS). // TLS Client Hello fingerprint (uTLS).
string fingerprint = 11; string fingerprint = 11;
bool reject_unknown_sni = 12;
} }

6
transport/internet/tls/unsafe.go Normal file
View File

@ -0,0 +1,6 @@
package tls
import _ "unsafe"
//go:linkname errNoCertificates crypto/tls.errNoCertificates
var errNoCertificates error

11
transport/internet/xtls/config.go
View File

@ -212,13 +212,13 @@ func getGetCertificateFunc(c *xtls.Config, ca []*Certificate) func(hello *xtls.C
} }
} }
func getNewGetCertficateFunc(certs []*xtls.Certificate) func(hello *xtls.ClientHelloInfo) (*xtls.Certificate, error) { func getNewGetCertificateFunc(certs []*xtls.Certificate, rejectUnknownSNI bool) func(hello *xtls.ClientHelloInfo) (*xtls.Certificate, error) {
return func(hello *xtls.ClientHelloInfo) (*xtls.Certificate, error) { return func(hello *xtls.ClientHelloInfo) (*xtls.Certificate, error) {
if len(certs) == 0 { if len(certs) == 0 {
return nil, newError("empty certs") return nil, errNoCertificates
} }
sni := strings.ToLower(hello.ServerName) sni := strings.ToLower(hello.ServerName)
if len(certs) == 1 || sni == "" { if !rejectUnknownSNI && (len(certs) == 1 || sni == "") {
return certs[0], nil return certs[0], nil
} }
gsni := "*" gsni := "*"
@ -235,6 +235,9 @@ func getNewGetCertficateFunc(certs []*xtls.Certificate) func(hello *xtls.ClientH
} }
} }
} }
if rejectUnknownSNI {
return nil, errNoCertificates
}
return certs[0], nil return certs[0], nil
} }
} }
@ -276,7 +279,7 @@ func (c *Config) GetXTLSConfig(opts ...Option) *xtls.Config {
if len(caCerts) > 0 { if len(caCerts) > 0 {
config.GetCertificate = getGetCertificateFunc(config, caCerts) config.GetCertificate = getGetCertificateFunc(config, caCerts)
} else { } else {
config.GetCertificate = getNewGetCertficateFunc(c.BuildCertificates()) config.GetCertificate = getNewGetCertificateFunc(c.BuildCertificates(), c.RejectUnknownSni)
} }
if sn := c.parseServerName(); len(sn) > 0 { if sn := c.parseServerName(); len(sn) > 0 {

32
transport/internet/xtls/config.pb.go
View File

@ -1,7 +1,7 @@
// Code generated by protoc-gen-go. DO NOT EDIT. // Code generated by protoc-gen-go. DO NOT EDIT.
// versions: // versions:
// protoc-gen-go v1.25.0 // protoc-gen-go v1.25.0
// protoc v3.14.0 // protoc v3.15.8
// source: transport/internet/xtls/config.proto // source: transport/internet/xtls/config.proto
package xtls package xtls
@ -200,6 +200,7 @@ type Config struct {
CipherSuites string `protobuf:"bytes,9,opt,name=cipher_suites,json=cipherSuites,proto3" json:"cipher_suites,omitempty"` CipherSuites string `protobuf:"bytes,9,opt,name=cipher_suites,json=cipherSuites,proto3" json:"cipher_suites,omitempty"`
// Whether the server selects its most preferred ciphersuite. // Whether the server selects its most preferred ciphersuite.
PreferServerCipherSuites bool `protobuf:"varint,10,opt,name=prefer_server_cipher_suites,json=preferServerCipherSuites,proto3" json:"prefer_server_cipher_suites,omitempty"` PreferServerCipherSuites bool `protobuf:"varint,10,opt,name=prefer_server_cipher_suites,json=preferServerCipherSuites,proto3" json:"prefer_server_cipher_suites,omitempty"`
RejectUnknownSni bool `protobuf:"varint,12,opt,name=reject_unknown_sni,json=rejectUnknownSni,proto3" json:"reject_unknown_sni,omitempty"`
} }
func (x *Config) Reset() { func (x *Config) Reset() {
@ -304,6 +305,13 @@ func (x *Config) GetPreferServerCipherSuites() bool {
return false return false
} }
func (x *Config) GetRejectUnknownSni() bool {
if x != nil {
return x.RejectUnknownSni
}
return false
}
var File_transport_internet_xtls_config_proto protoreflect.FileDescriptor var File_transport_internet_xtls_config_proto protoreflect.FileDescriptor
var file_transport_internet_xtls_config_proto_rawDesc = []byte{ var file_transport_internet_xtls_config_proto_rawDesc = []byte{
@ -333,7 +341,7 @@ var file_transport_internet_xtls_config_proto_rawDesc = []byte{
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@ -363,15 +371,17 @@ var file_transport_internet_xtls_config_proto_rawDesc = []byte{
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} }
var ( var (

3
transport/internet/xtls/config.proto
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@ -64,4 +64,7 @@ message Config {
// Whether the server selects its most preferred ciphersuite. // Whether the server selects its most preferred ciphersuite.
bool prefer_server_cipher_suites = 10; bool prefer_server_cipher_suites = 10;
bool reject_unknown_sni = 12;
} }

6
transport/internet/xtls/unsafe.go Normal file
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@ -0,0 +1,6 @@
package xtls
import _ "unsafe"
//go:linkname errNoCertificates github.com/xtls/go.errNoCertificates
var errNoCertificates error