Merge Go frontend (apiserver + xcecli) into meson build

src/frontend/apiserver/tools/encrypt/crypter.go

@@ -0,0 +1,117 @@
+package main
+
+import (
+	"crypto/aes"
+	"crypto/cipher"
+	"crypto/rand"
+	"crypto/sha256"
+	"encoding/base64"
+	"errors"
+	"flag"
+	"fmt"
+	"io"
+	"log"
+	"os"
+
+	survey "github.com/AlecAivazis/survey/v2" // survey package
+)
+
+// admin need set env: ENCRYPTION_KEY
+// the default value: ")ZLxR6X@h5tYGhkwin<j"
+var EncryptionKey = ")ZLxR6X@h5tYGhkwin<j"
+
+func main() {
+	// command usage
+	flag.Usage = func() {
+		fmt.Fprintln(os.Stderr, `
+        Usage: crypter -action=<enc|dec> [options]
+
+        Options:
+            -action    enc|dec
+            -password  password (if empty, will be prompted)
+        `)
+	}
+
+	action := flag.String("action", "", "action to perform: enc or dec")
+	password := flag.String("password", "", "password")
+
+	flag.Parse()
+
+	if *action != "enc" && *action != "dec" {
+		fmt.Println("Invalid action. Use -action=enc or -action=dec")
+		os.Exit(1)
+	}
+
+	// use survey to prompt for missing values
+	var inputPassword string
+	if *password == "" {
+		survey.AskOne(&survey.Password{Message: "Enter password:\n"}, password)
+		inputPassword = *password
+	}
+	inputPassword = *password
+
+	if *action == "enc" {
+		encryptedPassword, err := Encrypt(inputPassword, "")
+		if err != nil {
+			log.Fatalf("Failed to encrypt password: %v", err)
+		}
+		fmt.Println(encryptedPassword)
+	}
+
+	if *action == "dec" {
+		realPassword, err := Decrypt(inputPassword, "")
+		if err != nil {
+			log.Fatalf("Failed to decrypt password: %v", err)
+		}
+		fmt.Println(realPassword)
+	}
+}
+
+// use sha256 to get 32 bytes key
+func getAESKey(key string) []byte {
+	selfSecretKey := os.Getenv("ENCRYPTION_KEY")
+	if selfSecretKey != "" {
+		key = selfSecretKey
+	} else {
+		key = EncryptionKey
+	}
+	hash := sha256.Sum256([]byte(key))
+	return hash[:]
+}
+
+func Encrypt(plaintext, secret string) (string, error) {
+	key := getAESKey(secret)
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		return "", err
+	}
+	ciphertext := make([]byte, aes.BlockSize+len(plaintext))
+	iv := ciphertext[:aes.BlockSize]
+	if _, err := io.ReadFull(rand.Reader, iv); err != nil {
+		return "", err
+	}
+
+	stream := cipher.NewCFBEncrypter(block, iv)
+	stream.XORKeyStream(ciphertext[aes.BlockSize:], []byte(plaintext))
+	return base64.StdEncoding.EncodeToString(ciphertext), nil
+}
+
+func Decrypt(encryptedText, secret string) (string, error) {
+	key := getAESKey(secret)
+	ciphertext, err := base64.StdEncoding.DecodeString(encryptedText)
+	if err != nil {
+		return "", err
+	}
+	if len(ciphertext) < aes.BlockSize {
+		return "", errors.New("the ciphertext is too short")
+	}
+	iv := ciphertext[:aes.BlockSize]
+	ciphertext = ciphertext[aes.BlockSize:]
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		return "", err
+	}
+	stream := cipher.NewCFBDecrypter(block, iv)
+	stream.XORKeyStream(ciphertext, ciphertext)
+	return string(ciphertext), nil
+}