feat(proxy): add AutoTLS support for HTTPS plugins

pkg/config/v1/validation/plugin.go

@@ -16,6 +16,8 @@ package validation
 
 import (
 	"errors"
+	"fmt"
+	"strings"
 
 	v1 "github.com/fatedier/frp/pkg/config/v1"
 )
@@ -49,6 +51,9 @@ func validateHTTPS2HTTPPluginOptions(c *v1.HTTPS2HTTPPluginOptions) error {
 	if c.LocalAddr == "" {
 		return errors.New("localAddr is required")
 	}
+	if err := validateAutoTLSOptions(c.AutoTLS, c.CrtPath, c.KeyPath); err != nil {
+		return fmt.Errorf("invalid autoTLS options: %w", err)
+	}
 	return nil
 }
 
@@ -56,6 +61,9 @@ func validateHTTPS2HTTPSPluginOptions(c *v1.HTTPS2HTTPSPluginOptions) error {
 	if c.LocalAddr == "" {
 		return errors.New("localAddr is required")
 	}
+	if err := validateAutoTLSOptions(c.AutoTLS, c.CrtPath, c.KeyPath); err != nil {
+		return fmt.Errorf("invalid autoTLS options: %w", err)
+	}
 	return nil
 }
 
@@ -77,5 +85,29 @@ func validateTLS2RawPluginOptions(c *v1.TLS2RawPluginOptions) error {
 	if c.LocalAddr == "" {
 		return errors.New("localAddr is required")
 	}
+	if err := validateAutoTLSOptions(c.AutoTLS, c.CrtPath, c.KeyPath); err != nil {
+		return fmt.Errorf("invalid autoTLS options: %w", err)
+	}
+	return nil
+}
+
+func validateAutoTLSOptions(c *v1.AutoTLSOptions, crtPath, keyPath string) error {
+	if c == nil || !c.Enable {
+		return nil
+	}
+
+	if crtPath != "" || keyPath != "" {
+		return errors.New("crtPath and keyPath must be empty when autoTLS.enable is true")
+	}
+	if strings.TrimSpace(c.CacheDir) == "" {
+		return errors.New("autoTLS.cacheDir is required when autoTLS.enable is true")
+	}
+	if len(c.HostAllowList) > 0 {
+		for _, host := range c.HostAllowList {
+			if strings.TrimSpace(host) == "" {
+				return errors.New("autoTLS.hostAllowList cannot contain empty domain")
+			}
+		}
+	}
 	return nil
 }