engigu
332 lines
7.3 KiB
Go
332 lines
7.3 KiB
Go
package controllers
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import (
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"encoding/json"
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"bufio"
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"io"
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"net/http"
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"os"
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"path/filepath"
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"runtime"
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"sync"
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"unicode/utf8"
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"github.com/engigu/baihu-panel/internal/constant"
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"github.com/engigu/baihu-panel/internal/services"
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"github.com/engigu/baihu-panel/internal/utils"
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"github.com/creack/pty"
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"github.com/gin-gonic/gin"
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"github.com/gorilla/websocket"
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"golang.org/x/text/encoding/simplifiedchinese"
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"golang.org/x/text/transform"
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)
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type TerminalController struct {
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envService *services.EnvService
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}
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func NewTerminalController(envService *services.EnvService) *TerminalController {
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return &TerminalController{
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envService: envService,
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}
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}
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var upgrader = websocket.Upgrader{
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CheckOrigin: func(r *http.Request) bool {
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return true
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},
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}
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// toUTF8 将可能是 GBK 编码的字节转换为 UTF-8
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func toUTF8(data []byte) string {
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if utf8.Valid(data) {
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return string(data)
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}
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// 尝试从 GBK 转换
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reader := transform.NewReader(
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bufio.NewReader(
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&byteReader{data: data},
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),
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simplifiedchinese.GBK.NewDecoder(),
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)
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result, err := io.ReadAll(reader)
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if err != nil {
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return string(data)
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}
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return string(result)
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}
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type byteReader struct {
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data []byte
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pos int
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}
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func (r *byteReader) Read(p []byte) (n int, err error) {
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if r.pos >= len(r.data) {
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return 0, io.EOF
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}
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n = copy(p, r.data[r.pos:])
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r.pos += n
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return n, nil
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}
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func (tc *TerminalController) HandleWebSocket(c *gin.Context) {
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conn, err := upgrader.Upgrade(c.Writer, c.Request, nil)
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if err != nil {
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return
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}
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defer conn.Close()
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// 演示模式下禁用终端
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if constant.DemoMode {
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conn.WriteMessage(websocket.TextMessage, []byte("\r\n\033[1;33m[演示模式] 终端功能已禁用\033[0m\r\n"))
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return
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}
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// Windows 使用 pipe 模式，Unix 使用 PTY 模式
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userID := c.GetString("userID")
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if userID == "" {
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userID = "1" // 兜底
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}
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if runtime.GOOS == "windows" {
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tc.handlePipeMode(conn, userID)
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} else {
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tc.handlePtyMode(conn, userID)
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}
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}
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// handlePtyMode 使用 PTY 处理终端（Unix/macOS）
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func (tc *TerminalController) handlePtyMode(conn *websocket.Conn, userID string) {
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// 发送 PTY 模式标识
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conn.WriteMessage(websocket.TextMessage, []byte("__PTY_MODE__"))
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cmd := utils.NewShellCmd()
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if absDir, err := filepath.Abs(constant.ScriptsWorkDir); err == nil {
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cmd.Dir = absDir
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}
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cmd.Env = append(os.Environ(), "TERM=xterm-256color")
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// 注入 baihu 命令环境变量
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if absBinDir, err := filepath.Abs(filepath.Join(constant.DataDir, "bin")); err == nil {
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pathStr := absBinDir + string(os.PathListSeparator) + os.Getenv("PATH")
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cmd.Env = append(cmd.Env, "PATH="+pathStr)
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}
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// 注入环境变量（支持同名合并）
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envVars := tc.envService.GetFormattedEnvVarsByUserID(userID)
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cmd.Env = append(cmd.Env, envVars...)
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ptmx, err := pty.Start(cmd)
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if err != nil {
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conn.WriteMessage(websocket.TextMessage, []byte("Error starting shell: "+err.Error()))
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return
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}
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defer ptmx.Close()
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pty.Setsize(ptmx, &pty.Winsize{Rows: 24, Cols: 80})
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var wg sync.WaitGroup
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var connMu sync.Mutex
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writeMessage := func(data []byte) {
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connMu.Lock()
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defer connMu.Unlock()
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conn.WriteMessage(websocket.TextMessage, data)
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}
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wg.Add(1)
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go func() {
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defer wg.Done()
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buf := make([]byte, 4096)
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for {
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n, err := ptmx.Read(buf)
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if err != nil {
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return
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}
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if n > 0 {
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text := toUTF8(buf[:n])
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writeMessage([]byte(text))
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}
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}
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}()
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for {
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_, message, err := conn.ReadMessage()
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if err != nil {
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break
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}
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// 处理调整窗口大小的消息
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if len(message) > 0 && message[0] == '{' {
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var resizeMsg struct {
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Type string `json:"type"`
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Rows uint16 `json:"rows"`
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Cols uint16 `json:"cols"`
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}
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if err := json.Unmarshal(message, &resizeMsg); err == nil && resizeMsg.Type == "resize" {
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pty.Setsize(ptmx, &pty.Winsize{Rows: resizeMsg.Rows, Cols: resizeMsg.Cols})
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continue
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}
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}
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if _, err := ptmx.Write(message); err != nil {
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break
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}
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}
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cmd.Process.Kill()
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cmd.Wait()
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wg.Wait()
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}
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// handlePipeMode 使用 pipe 处理终端（Windows）
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func (tc *TerminalController) handlePipeMode(conn *websocket.Conn, userID string) {
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// 发送 pipe 模式标识
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conn.WriteMessage(websocket.TextMessage, []byte("__PIPE_MODE__"))
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cmd := utils.NewShellCmd()
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if absDir, err := filepath.Abs(constant.ScriptsWorkDir); err == nil {
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cmd.Dir = absDir
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}
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// 注入环境变量
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cmd.Env = os.Environ()
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// 注入 baihu 命令环境变量
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if absBinDir, err := filepath.Abs(filepath.Join(constant.DataDir, "bin")); err == nil {
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pathStr := absBinDir + string(os.PathListSeparator) + os.Getenv("PATH")
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cmd.Env = append(cmd.Env, "PATH="+pathStr)
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}
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// 注入环境变量（支持同名合并）
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envVars := tc.envService.GetFormattedEnvVarsByUserID(userID)
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cmd.Env = append(cmd.Env, envVars...)
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stdin, err := cmd.StdinPipe()
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if err != nil {
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conn.WriteMessage(websocket.TextMessage, []byte("Error: "+err.Error()))
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return
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}
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stdout, err := cmd.StdoutPipe()
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if err != nil {
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conn.WriteMessage(websocket.TextMessage, []byte("Error: "+err.Error()))
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return
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}
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stderr, err := cmd.StderrPipe()
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if err != nil {
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conn.WriteMessage(websocket.TextMessage, []byte("Error: "+err.Error()))
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return
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}
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if err := cmd.Start(); err != nil {
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conn.WriteMessage(websocket.TextMessage, []byte("Error: "+err.Error()))
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return
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}
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var wg sync.WaitGroup
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var connMu sync.Mutex
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writeMessage := func(data []byte) {
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connMu.Lock()
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defer connMu.Unlock()
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conn.WriteMessage(websocket.TextMessage, data)
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}
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readOutput := func(reader io.Reader) {
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defer wg.Done()
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defer func() { recover() }()
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buf := make([]byte, 4096)
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for {
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n, err := reader.Read(buf)
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if err != nil {
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return
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}
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if n > 0 {
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text := toUTF8(buf[:n])
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writeMessage([]byte(text))
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}
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}
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}
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wg.Add(2)
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go readOutput(stdout)
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go readOutput(stderr)
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for {
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_, message, err := conn.ReadMessage()
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if err != nil {
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break
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}
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// 过滤调整窗口大小的消息（Windows Pipe 模式不支持调整尺寸，需过滤掉避免写入 stdin）
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if len(message) > 0 && message[0] == '{' {
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var resizeMsg struct {
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Type string `json:"type"`
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}
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if err := json.Unmarshal(message, &resizeMsg); err == nil && resizeMsg.Type == "resize" {
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continue
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}
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}
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if _, err := stdin.Write(message); err != nil {
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break
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}
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}
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stdin.Close()
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cmd.Process.Kill()
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cmd.Wait()
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wg.Wait()
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}
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// ExecuteShellCommand 执行单个命令并返回结果
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func (tc *TerminalController) ExecuteShellCommand(c *gin.Context) {
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// 演示模式下禁止执行命令
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if constant.DemoMode {
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utils.BadRequest(c, "演示模式下不能执行命令")
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return
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}
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var req struct {
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Command string `json:"command" binding:"required"`
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}
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if err := c.ShouldBindJSON(&req); err != nil {
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utils.BadRequest(c, err.Error())
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return
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}
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cmd := utils.NewShellCommandCmd(req.Command)
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output, err := cmd.CombinedOutput()
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if err != nil {
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utils.Success(c, gin.H{
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"output": string(output),
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"error": err.Error(),
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})
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return
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}
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utils.Success(c, gin.H{
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"output": string(output),
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})
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}
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// GetCommands 获取所有可用的 cmd 列表及说明
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func (tc *TerminalController) GetCommands(c *gin.Context) {
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var cmds []map[string]string
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for _, cmdInfo := range constant.Commands {
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cmds = append(cmds, map[string]string{
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"name": cmdInfo.Name,
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"description": cmdInfo.Description,
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})
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}
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utils.Success(c, cmds)
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}
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