From 366a6ca67deaa3c76b9bb347d995943d5edd2e1a Mon Sep 17 00:00:00 2001
From: Shelikhoo <xiaokangwang@outlook.com>
Date: Sat, 7 Sep 2024 17:57:57 +0100
Subject: [PATCH] Add back tls certChainHash command

---
 main/commands/all/tls/chainhash.go | 34 ++++++++++++++++++++++++++++++
 main/commands/all/tls/tls.go       |  1 +
 2 files changed, 35 insertions(+)
 create mode 100644 main/commands/all/tls/chainhash.go

diff --git a/main/commands/all/tls/chainhash.go b/main/commands/all/tls/chainhash.go
new file mode 100644
index 00000000000..e78831bfa9f
--- /dev/null
+++ b/main/commands/all/tls/chainhash.go
@@ -0,0 +1,34 @@
+package tls
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/v2fly/v2ray-core/v5/main/commands/base"
+	v2tls "github.com/v2fly/v2ray-core/v5/transport/internet/tls"
+)
+
+var cmdChainHash = &base.Command{
+	UsageLine: "{{.Exec}} tls certChainHash [--cert <cert.pem>]",
+	Short:     "Generate certificate chain hash for given certificate bundle",
+}
+
+func init() {
+	cmdChainHash.Run = executeChainHash // break init loop
+}
+
+var certFile = cmdChainHash.Flag.String("cert", "cert.pem", "")
+
+func executeChainHash(cmd *base.Command, args []string) {
+	if len(*certFile) == 0 {
+		base.Fatalf("cert file not specified")
+	}
+	certContent, err := os.ReadFile(*certFile)
+	if err != nil {
+		base.Fatalf("Failed to read cert file: %s", err)
+		return
+	}
+
+	certChainHashB64 := v2tls.CalculatePEMCertChainSHA256Hash(certContent)
+	fmt.Println(certChainHashB64)
+}
diff --git a/main/commands/all/tls/tls.go b/main/commands/all/tls/tls.go
index f32407571ae..8f04b163dad 100644
--- a/main/commands/all/tls/tls.go
+++ b/main/commands/all/tls/tls.go
@@ -14,5 +14,6 @@ var CmdTLS = &base.Command{
 	Commands: []*base.Command{
 		cmdCert,
 		cmdPing,
+		cmdChainHash,
 	},
 }