snapshot of https://github.com/nats-io/nats-server.git (main, 2026-09-15; blobs > 131072B omitted)

server/certstore/certstore.go

@@ -0,0 +1,104 @@
+// Copyright 2022-2025 The NATS 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 certstore
+
+import (
+	"crypto"
+	"crypto/x509"
+	"io"
+	"runtime"
+	"strings"
+)
+
+type StoreType int
+
+const MATCHBYEMPTY = 0
+const STOREEMPTY = 0
+
+const (
+	windowsCurrentUser StoreType = iota + 1
+	windowsLocalMachine
+)
+
+var StoreMap = map[string]StoreType{
+	"windowscurrentuser":  windowsCurrentUser,
+	"windowslocalmachine": windowsLocalMachine,
+}
+
+var StoreOSMap = map[StoreType]string{
+	windowsCurrentUser:  "windows",
+	windowsLocalMachine: "windows",
+}
+
+type MatchByType int
+
+const (
+	matchByIssuer MatchByType = iota + 1
+	matchBySubject
+	matchByThumbprint
+)
+
+var MatchByMap = map[string]MatchByType{
+	"issuer":     matchByIssuer,
+	"subject":    matchBySubject,
+	"thumbprint": matchByThumbprint,
+}
+
+var Usage = `
+In place of cert_file and key_file you may use the windows certificate store:
+
+    tls {
+        cert_store:     "WindowsCurrentUser"
+        cert_match_by:  "Subject"
+        cert_match:     "MyServer123"
+    }
+`
+
+func ParseCertStore(certStore string) (StoreType, error) {
+	certStoreType, exists := StoreMap[strings.ToLower(certStore)]
+	if !exists {
+		return 0, ErrBadCertStore
+	}
+	validOS, exists := StoreOSMap[certStoreType]
+	if !exists || validOS != runtime.GOOS {
+		return 0, ErrOSNotCompatCertStore
+	}
+	return certStoreType, nil
+}
+
+func ParseCertMatchBy(certMatchBy string) (MatchByType, error) {
+	certMatchByType, exists := MatchByMap[strings.ToLower(certMatchBy)]
+	if !exists {
+		return 0, ErrBadMatchByType
+	}
+	return certMatchByType, nil
+}
+
+func GetLeafIssuer(leaf *x509.Certificate, vOpts x509.VerifyOptions) (issuer *x509.Certificate) {
+	chains, err := leaf.Verify(vOpts)
+	if err != nil || len(chains) == 0 {
+		issuer = nil
+	} else {
+		issuer = chains[0][1]
+	}
+	return
+}
+
+// credential provides access to a public key and is a crypto.Signer.
+type credential interface {
+	// Public returns the public key corresponding to the leaf certificate.
+	Public() crypto.PublicKey
+	// Sign signs digest with the private key.
+	Sign(rand io.Reader, digest []byte, opts crypto.SignerOpts) (signature []byte, err error)
+}