Initial QSfera import

Server/vendor/go.etcd.io/etcd/client/pkg/v3/tlsutil/cipher_suites.go

@@ -0,0 +1,56 @@
+// Copyright 2018 The etcd Authors
+//
+// 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 tlsutil
+
+import (
+	"crypto/tls"
+	"fmt"
+)
+
+// GetCipherSuite returns the corresponding cipher suite,
+// and boolean value if it is supported.
+func GetCipherSuite(s string) (uint16, bool) {
+	for _, c := range tls.CipherSuites() {
+		if s == c.Name {
+			return c.ID, true
+		}
+	}
+	for _, c := range tls.InsecureCipherSuites() {
+		if s == c.Name {
+			return c.ID, true
+		}
+	}
+	switch s {
+	case "TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305":
+		return tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256, true
+	case "TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305":
+		return tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256, true
+	}
+	return 0, false
+}
+
+// GetCipherSuites returns list of corresponding cipher suite IDs.
+func GetCipherSuites(ss []string) ([]uint16, error) {
+	cs := make([]uint16, len(ss))
+	for i, s := range ss {
+		var ok bool
+		cs[i], ok = GetCipherSuite(s)
+		if !ok {
+			return nil, fmt.Errorf("unexpected TLS cipher suite %q", s)
+		}
+	}
+
+	return cs, nil
+}

Server/vendor/go.etcd.io/etcd/client/pkg/v3/tlsutil/doc.go

@@ -0,0 +1,16 @@
+// Copyright 2016 The etcd Authors
+//
+// 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 tlsutil provides utility functions for handling TLS.
+package tlsutil

Server/vendor/go.etcd.io/etcd/client/pkg/v3/tlsutil/tlsutil.go

@@ -0,0 +1,73 @@
+// Copyright 2016 The etcd Authors
+//
+// 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 tlsutil
+
+import (
+	"crypto/tls"
+	"crypto/x509"
+	"encoding/pem"
+	"os"
+)
+
+// NewCertPool creates x509 certPool with provided CA files.
+func NewCertPool(CAFiles []string) (*x509.CertPool, error) {
+	certPool := x509.NewCertPool()
+
+	for _, CAFile := range CAFiles {
+		pemByte, err := os.ReadFile(CAFile)
+		if err != nil {
+			return nil, err
+		}
+
+		for {
+			var block *pem.Block
+			block, pemByte = pem.Decode(pemByte)
+			if block == nil {
+				break
+			}
+			cert, err := x509.ParseCertificate(block.Bytes)
+			if err != nil {
+				return nil, err
+			}
+
+			certPool.AddCert(cert)
+		}
+	}
+
+	return certPool, nil
+}
+
+// NewCert generates TLS cert by using the given cert,key and parse function.
+func NewCert(certfile, keyfile string, parseFunc func([]byte, []byte) (tls.Certificate, error)) (*tls.Certificate, error) {
+	cert, err := os.ReadFile(certfile)
+	if err != nil {
+		return nil, err
+	}
+
+	key, err := os.ReadFile(keyfile)
+	if err != nil {
+		return nil, err
+	}
+
+	if parseFunc == nil {
+		parseFunc = tls.X509KeyPair
+	}
+
+	tlsCert, err := parseFunc(cert, key)
+	if err != nil {
+		return nil, err
+	}
+	return &tlsCert, nil
+}

Server/vendor/go.etcd.io/etcd/client/pkg/v3/tlsutil/versions.go

@@ -0,0 +1,47 @@
+// Copyright 2023 The etcd Authors
+//
+// 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 tlsutil
+
+import (
+	"crypto/tls"
+	"fmt"
+)
+
+type TLSVersion string
+
+// Constants for TLS versions.
+const (
+	TLSVersionDefault TLSVersion = ""
+	TLSVersion12      TLSVersion = "TLS1.2"
+	TLSVersion13      TLSVersion = "TLS1.3"
+)
+
+// GetTLSVersion returns the corresponding tls.Version or error.
+func GetTLSVersion(version string) (uint16, error) {
+	var v uint16
+
+	switch version {
+	case string(TLSVersionDefault):
+		v = 0 // 0 means let Go decide.
+	case string(TLSVersion12):
+		v = tls.VersionTLS12
+	case string(TLSVersion13):
+		v = tls.VersionTLS13
+	default:
+		return 0, fmt.Errorf("unexpected TLS version %q (must be one of: TLS1.2, TLS1.3)", version)
+	}
+
+	return v, nil
+}