support custom drag file upload command

README.cn.md

@@ -300,6 +300,14 @@ trzsz-ssh ( tssh ) 设计为 ssh 客户端的直接替代品，提供与 openssh
     EnableDragFile Yes
   ```
 
+- 如果想在拖拽上传时覆盖现有文件，请将 `DragFileUploadCommand` 配置为 `trz -y` ：
+
+  ```
+  Host xxx
+    # 如果配置在 ~/.ssh/config 中，可以加上 `#!!` 前缀，以兼容标准 ssh
+    DragFileUploadCommand trz -y
+  ```
+
 - 如果只是想临时启用拖拽上传功能，可以在命令行中使用 `tssh --dragfile` 登录服务器。
 
 - 在 `~/.ssh/config` 或 `ExConfigPath` 配置文件中，配置 `EnableTrzsz` 为 `No` 禁用 trzsz 和 zmodem。
@@ -322,6 +330,15 @@ trzsz-ssh ( tssh ) 设计为 ssh 客户端的直接替代品，提供与 openssh
     EnableZmodem Yes
   ```
 
+- 如果想在拖拽文件时使用 rz 上传，请将 `DragFileUploadCommand` 配置为 `rz` ：
+
+  ```
+  Host xxx
+    # 如果配置在 ~/.ssh/config 中，可以加上 `#!!` 前缀，以兼容标准 ssh
+    EnableDragFile Yes
+    DragFileUploadCommand rz
+  ```
+
 - 除了服务器，本地电脑也要安装 `lrzsz`，Windows 可以从 [lrzsz-win32](https://github.com/trzsz/lrzsz-win32/releases) 下载，解压并加到 `PATH` 环境变量中，也可以如下安装：
 
   ```
@@ -588,6 +605,9 @@ trzsz-ssh ( tssh ) 设计为 ssh 客户端的直接替代品，提供与 openssh
   # tsz 下载时，自动保存的路径，为空时弹出对话框手工选择，默认为空
   DefaultDownloadPath = ~/Downloads
 
+  # 全局的拖拽文件上传命令，注意 ~/.ssh/config 中配置的优先级更高
+  DragFileUploadCommand = trz -y
+
   # tssh 搜索和选择服务器时，配置主题风格和自定义颜色
   PromptThemeLayout = simple
   PromptThemeColors = {"active_host": "magenta|bold", "inactive_host": "magenta"}

README.en.md

@@ -300,6 +300,14 @@ trzsz-ssh ( tssh ) is an ssh client designed as a drop-in replacement for the op
     EnableDragFile Yes
   ```
 
+- If you want to overwrite the existing files when dragging files to upload, configure `DragFileUploadCommand` to `trz -y`:
+
+  ```
+  Host xxx
+    # If configured in ~/.ssh/config, add `#!!` prefix to be compatible with openssh.
+    DragFileUploadCommand trz -y
+  ```
+
 - If you want to temporarily enable the drag and drop to upload feature, use `tssh --dragfile` to log in.
 
 - In the `~/.ssh/config` or `ExConfigPath` configuration file, configure `EnableTrzsz` to `No` to disable the trzsz and zmodem feature.
@@ -322,6 +330,15 @@ trzsz-ssh ( tssh ) is an ssh client designed as a drop-in replacement for the op
     EnableZmodem Yes
   ```
 
+- If you want to use `rz` to upload when dragging files, configure `DragFileUploadCommand` to `rz`:
+
+  ```
+  Host xxx
+    # If configured in ~/.ssh/config, add `#!!` prefix to be compatible with openssh.
+    EnableDragFile Yes
+    DragFileUploadCommand rz
+  ```
+
 - Not only the server, but also the local computer needs to install `lrzsz`. For Windows, you can download from [lrzsz-win32](https://github.com/trzsz/lrzsz-win32/releases), unzip and add to `PATH` environment, or install it as follows:
 
   ```
@@ -588,6 +605,9 @@ trzsz-ssh ( tssh ) is an ssh client designed as a drop-in replacement for the op
   # The automatically save path for tsz downloading, the default is empty which poping up a folder dialog.
   DefaultDownloadPath = ~/Downloads
 
+  # The global drag file upload command, note that the priority configured in ~/.ssh/config is higher.
+  DragFileUploadCommand = trz -y
+
   # When searching and selecting servers with tssh, the theme and colors.
   PromptThemeLayout = simple
   PromptThemeColors = {"active_host": "magenta|bold", "inactive_host": "magenta"}

tssh/config.go

@@ -68,30 +68,31 @@ type sshHost struct {
 }
 
 type tsshConfig struct {
-	language            string
-	configPath          string
-	sysConfigPath       string
-	exConfigPath        string
-	defaultUploadPath   string
-	defaultDownloadPath string
-	promptThemeLayout   string
-	promptThemeColors   map[string]string
-	promptPageSize      uint8
-	promptDefaultMode   string
-	promptDetailItems   string
-	promptCursorIcon    string
-	promptSelectedIcon  string
-	setTerminalTitle    string
-	loadConfig          sync.Once
-	loadExConfig        sync.Once
-	loadHosts           sync.Once
-	config              *ssh_config.Config
-	sysConfig           *ssh_config.Config
-	exConfig            *ssh_config.Config
-	loadDefaultColors   sync.Once
-	defaultThemeColors  map[string]string
-	allHosts            []*sshHost
-	wildcardPatterns    []*ssh_config.Pattern
+	language              string
+	configPath            string
+	sysConfigPath         string
+	exConfigPath          string
+	defaultUploadPath     string
+	defaultDownloadPath   string
+	dragFileUploadCommand string
+	promptThemeLayout     string
+	promptThemeColors     map[string]string
+	promptPageSize        uint8
+	promptDefaultMode     string
+	promptDetailItems     string
+	promptCursorIcon      string
+	promptSelectedIcon    string
+	setTerminalTitle      string
+	loadConfig            sync.Once
+	loadExConfig          sync.Once
+	loadHosts             sync.Once
+	config                *ssh_config.Config
+	sysConfig             *ssh_config.Config
+	exConfig              *ssh_config.Config
+	loadDefaultColors     sync.Once
+	defaultThemeColors    map[string]string
+	allHosts              []*sshHost
+	wildcardPatterns      []*ssh_config.Pattern
 }
 
 var userConfig *tsshConfig
@@ -138,6 +139,8 @@ func parseTsshConfig() {
 			userConfig.defaultUploadPath = resolveHomeDir(value)
 		case name == "defaultdownloadpath" && userConfig.defaultDownloadPath == "":
 			userConfig.defaultDownloadPath = resolveHomeDir(value)
+		case name == "dragfileuploadcommand" && userConfig.dragFileUploadCommand == "":
+			userConfig.dragFileUploadCommand = value
 		case name == "promptthemelayout" && userConfig.promptThemeLayout == "":
 			userConfig.promptThemeLayout = value
 		case name == "promptthemecolors" && len(userConfig.promptThemeColors) == 0:
@@ -192,6 +195,9 @@ func showTsshConfig() {
 	if userConfig.defaultDownloadPath != "" {
 		debug("DefaultDownloadPath = %s", userConfig.defaultDownloadPath)
 	}
+	if userConfig.dragFileUploadCommand != "" {
+		debug("DragFileUploadCommand = %s", userConfig.dragFileUploadCommand)
+	}
 	if userConfig.promptThemeLayout != "" {
 		debug("PromptThemeLayout = %s", userConfig.promptThemeLayout)
 	}

tssh/trzsz.go

@@ -169,9 +169,14 @@ func enableTrzsz(args *sshArgs, ss *sshClientSession) error {
 		_ = ss.session.WindowChange(height, width)
 	})
 
-	// setup default paths
+	// setup trzsz config
 	trzszFilter.SetDefaultUploadPath(userConfig.defaultUploadPath)
 	trzszFilter.SetDefaultDownloadPath(userConfig.defaultDownloadPath)
+	dragFileUploadCommand := getExOptionConfig(args, "DragFileUploadCommand")
+	if dragFileUploadCommand == "" {
+		dragFileUploadCommand = userConfig.dragFileUploadCommand
+	}
+	trzszFilter.SetDragFileUploadCommand(dragFileUploadCommand)
 
 	// setup tunnel connect
 	trzszFilter.SetTunnelConnector(func(port int) net.Conn {