add feature license management

backend/internal/scst/handler.go

@@ -745,3 +745,49 @@ func (h *Handler) ListAllInitiatorGroups(c *gin.Context) {
 
 	c.JSON(http.StatusOK, gin.H{"groups": groups})
 }
+
+// GetConfigFile reads the SCST configuration file content
+func (h *Handler) GetConfigFile(c *gin.Context) {
+	configPath := c.DefaultQuery("path", "/etc/scst.conf")
+	
+	content, err := h.service.ReadConfigFile(c.Request.Context(), configPath)
+	if err != nil {
+		h.logger.Error("Failed to read config file", "error", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"content": content,
+		"path":    configPath,
+	})
+}
+
+// UpdateConfigFile writes content to SCST configuration file
+func (h *Handler) UpdateConfigFile(c *gin.Context) {
+	var req struct {
+		Content string `json:"content" binding:"required"`
+		Path    string `json:"path"`
+	}
+
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid request"})
+		return
+	}
+
+	configPath := req.Path
+	if configPath == "" {
+		configPath = "/etc/scst.conf"
+	}
+
+	if err := h.service.WriteConfigFile(c.Request.Context(), configPath, req.Content); err != nil {
+		h.logger.Error("Failed to write config file", "error", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"message": "Configuration file updated successfully",
+		"path":    configPath,
+	})
+}