feat: Allows passing in base64-encoded configuration strings

hub/hub.go

@@ -64,8 +64,16 @@ func applyRoute(cfg *config.Config) {
 }
 
 // Parse call at the beginning of mihomo
-func Parse(options ...Option) error {
-	cfg, err := executor.Parse()
+func Parse(configBytes []byte, options ...Option) error {
+	var cfg *config.Config
+	var err error
+
+	if len(configBytes) != 0 {
+		cfg, err = executor.ParseWithBytes(configBytes)
+	} else {
+		cfg, err = executor.Parse()
+	}
+
 	if err != nil {
 		return err
 	}

main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"encoding/base64"
 	"flag"
 	"fmt"
 	"os"
@@ -28,6 +29,8 @@ var (
 	geodataMode            bool
 	homeDir                string
 	configFile             string
+	configString           string
+	configBytes            []byte
 	externalUI             string
 	externalController     string
 	externalControllerUnix string
@@ -37,6 +40,7 @@ var (
 func init() {
 	flag.StringVar(&homeDir, "d", os.Getenv("CLASH_HOME_DIR"), "set configuration directory")
 	flag.StringVar(&configFile, "f", os.Getenv("CLASH_CONFIG_FILE"), "specify configuration file")
+	flag.StringVar(&configString, "config", os.Getenv("CLASH_CONFIG_STRING"), "specify base64-encoded configuration string")
 	flag.StringVar(&externalUI, "ext-ui", os.Getenv("CLASH_OVERRIDE_EXTERNAL_UI_DIR"), "override external ui directory")
 	flag.StringVar(&externalController, "ext-ctl", os.Getenv("CLASH_OVERRIDE_EXTERNAL_CONTROLLER"), "override external controller address")
 	flag.StringVar(&externalControllerUnix, "ext-ctl-unix", os.Getenv("CLASH_OVERRIDE_EXTERNAL_CONTROLLER_UNIX"), "override external controller unix address")
@@ -73,29 +77,46 @@ func main() {
 		C.SetHomeDir(homeDir)
 	}
 
-	if configFile != "" {
-		if !filepath.IsAbs(configFile) {
-			currentDir, _ := os.Getwd()
-			configFile = filepath.Join(currentDir, configFile)
-		}
-	} else {
-		configFile = filepath.Join(C.Path.HomeDir(), C.Path.Config())
-	}
-	C.SetConfig(configFile)
-
 	if geodataMode {
 		C.GeodataMode = true
 	}
 
-	if err := config.Init(C.Path.HomeDir()); err != nil {
-		log.Fatalln("Initial configuration directory error: %s", err.Error())
+	if configString != "" {
+		var err error
+		configBytes, err = base64.StdEncoding.DecodeString(configString)
+		if err != nil {
+			log.Fatalln("Initial configuration error: %s", err.Error())
+			return
+		}
+	} else {
+		if configFile != "" {
+			if !filepath.IsAbs(configFile) {
+				currentDir, _ := os.Getwd()
+				configFile = filepath.Join(currentDir, configFile)
+			}
+		} else {
+			configFile = filepath.Join(C.Path.HomeDir(), C.Path.Config())
+		}
+		C.SetConfig(configFile)
+
+		if err := config.Init(C.Path.HomeDir()); err != nil {
+			log.Fatalln("Initial configuration directory error: %s", err.Error())
+		}
 	}
 
 	if testConfig {
-		if _, err := executor.Parse(); err != nil {
-			log.Errorln(err.Error())
-			fmt.Printf("configuration file %s test failed\n", C.Path.Config())
-			os.Exit(1)
+		if len(configBytes) != 0 {
+			if _, err := executor.ParseWithBytes(configBytes); err != nil {
+				log.Errorln(err.Error())
+				fmt.Println("configuration test failed")
+				os.Exit(1)
+			}
+		} else {
+			if _, err := executor.Parse(); err != nil {
+				log.Errorln(err.Error())
+				fmt.Printf("configuration file %s test failed\n", C.Path.Config())
+				os.Exit(1)
+			}
 		}
 		fmt.Printf("configuration file %s test is successful\n", C.Path.Config())
 		return
@@ -115,7 +136,7 @@ func main() {
 		options = append(options, hub.WithSecret(secret))
 	}
 
-	if err := hub.Parse(options...); err != nil {
+	if err := hub.Parse(configBytes, options...); err != nil {
 		log.Fatalln("Parse config error: %s", err.Error())
 	}
 
@@ -134,11 +155,19 @@ func main() {
 		case <-termSign:
 			return
 		case <-hupSign:
-			if cfg, err := executor.ParseWithPath(C.Path.Config()); err == nil {
+			var cfg *config.Config
+			var err error
+			if configString != "" {
+				cfg, err = executor.ParseWithBytes(configBytes)
+			} else {
+				cfg, err = executor.ParseWithPath(C.Path.Config())
+			}
+			if err == nil {
 				hub.ApplyConfig(cfg)
 			} else {
 				log.Errorln("Parse config error: %s", err.Error())
 			}
+
 		}
 	}
 }