04f8d0079b
* 优化图标和LOGO * 修改登录页面动画的速度为3 * 增加对websocket的异常处理 * 修复了用户组和用户名唯一判断错误的问题 * 提示版本号 * 修复readme错别字 * 修复单词拼写错误的问题 * 修复代码格式 * 修改Windows资产属性名称 * Docker 打包流程增加 upx 压缩 * 升级依赖文件，修改sqlite驱动为 github.com/glebarez/sqlite * 修复第一次查询「授权令牌」的错误 * 移除无关代码 * 修改docker打包脚本 * 增加打包脚本 * 增加微信群 * 修复单词拼写错误的问题 * 修复代码格式 * 修改Windows资产属性名称 * Docker 打包流程增加 upx 压缩 * 修改docker打包脚本 * - 替换 sqlite 驱动为 github.com/glebarez/sqlite - 修复数据库锁定的问题 - 修复部分代码不完善的问题 - 修复策略显示不完整的问题 - 修复编辑文件换行符的问题 - 优化guacd连接
289 lines
7.9 KiB
Go
289 lines
7.9 KiB
Go
package api
|
||
|
||
import (
|
||
"context"
|
||
"encoding/base64"
|
||
"encoding/json"
|
||
"errors"
|
||
"path"
|
||
"strconv"
|
||
|
||
"next-terminal/server/config"
|
||
"next-terminal/server/constant"
|
||
"next-terminal/server/dto"
|
||
"next-terminal/server/global/session"
|
||
"next-terminal/server/guacd"
|
||
"next-terminal/server/log"
|
||
"next-terminal/server/model"
|
||
"next-terminal/server/repository"
|
||
"next-terminal/server/service"
|
||
"next-terminal/server/term"
|
||
"next-terminal/server/utils"
|
||
|
||
"github.com/gorilla/websocket"
|
||
"github.com/labstack/echo/v4"
|
||
)
|
||
|
||
const (
|
||
Closed = 0
|
||
Connected = 1
|
||
Data = 2
|
||
Resize = 3
|
||
Ping = 4
|
||
)
|
||
|
||
type WebTerminalApi struct {
|
||
}
|
||
|
||
func (api WebTerminalApi) SshEndpoint(c echo.Context) error {
|
||
ws, err := UpGrader.Upgrade(c.Response().Writer, c.Request(), nil)
|
||
if err != nil {
|
||
log.Errorf("升级为WebSocket协议失败：%v", err.Error())
|
||
return err
|
||
}
|
||
|
||
defer func() {
|
||
_ = ws.Close()
|
||
}()
|
||
ctx := context.TODO()
|
||
|
||
sessionId := c.Param("id")
|
||
cols, _ := strconv.Atoi(c.QueryParam("cols"))
|
||
rows, _ := strconv.Atoi(c.QueryParam("rows"))
|
||
|
||
s, err := service.SessionService.FindByIdAndDecrypt(ctx, sessionId)
|
||
if err != nil {
|
||
return WriteMessage(ws, dto.NewMessage(Closed, "获取会话失败"))
|
||
}
|
||
|
||
if err := api.permissionCheck(c, s.AssetId); err != nil {
|
||
return WriteMessage(ws, dto.NewMessage(Closed, err.Error()))
|
||
}
|
||
|
||
var (
|
||
username = s.Username
|
||
password = s.Password
|
||
privateKey = s.PrivateKey
|
||
passphrase = s.Passphrase
|
||
ip = s.IP
|
||
port = s.Port
|
||
)
|
||
|
||
if s.AccessGatewayId != "" && s.AccessGatewayId != "-" {
|
||
g, err := service.GatewayService.GetGatewayAndReconnectById(s.AccessGatewayId)
|
||
if err != nil {
|
||
return WriteMessage(ws, dto.NewMessage(Closed, "获取接入网关失败："+err.Error()))
|
||
}
|
||
if !g.Connected {
|
||
return WriteMessage(ws, dto.NewMessage(Closed, "接入网关不可用："+g.Message))
|
||
}
|
||
exposedIP, exposedPort, err := g.OpenSshTunnel(s.ID, ip, port)
|
||
if err != nil {
|
||
return WriteMessage(ws, dto.NewMessage(Closed, "创建隧道失败："+err.Error()))
|
||
}
|
||
defer g.CloseSshTunnel(s.ID)
|
||
ip = exposedIP
|
||
port = exposedPort
|
||
}
|
||
|
||
recording := ""
|
||
var isRecording = false
|
||
property, err := repository.PropertyRepository.FindByName(ctx, guacd.EnableRecording)
|
||
if err == nil && property.Value == "true" {
|
||
isRecording = true
|
||
}
|
||
|
||
if isRecording {
|
||
recording = path.Join(config.GlobalCfg.Guacd.Recording, sessionId, "recording.cast")
|
||
}
|
||
|
||
attributes, err := repository.AssetRepository.FindAssetAttrMapByAssetId(ctx, s.AssetId)
|
||
if err != nil {
|
||
return WriteMessage(ws, dto.NewMessage(Closed, "获取资产属性失败："+err.Error()))
|
||
}
|
||
|
||
var xterm = "xterm-256color"
|
||
var nextTerminal *term.NextTerminal
|
||
if "true" == attributes[constant.SocksProxyEnable] {
|
||
nextTerminal, err = term.NewNextTerminalUseSocks(ip, port, username, password, privateKey, passphrase, rows, cols, recording, xterm, true, attributes[constant.SocksProxyHost], attributes[constant.SocksProxyPort], attributes[constant.SocksProxyUsername], attributes[constant.SocksProxyPassword])
|
||
} else {
|
||
nextTerminal, err = term.NewNextTerminal(ip, port, username, password, privateKey, passphrase, rows, cols, recording, xterm, true)
|
||
}
|
||
|
||
if err != nil {
|
||
return WriteMessage(ws, dto.NewMessage(Closed, "创建SSH客户端失败："+err.Error()))
|
||
}
|
||
|
||
if err := nextTerminal.RequestPty(xterm, rows, cols); err != nil {
|
||
return err
|
||
}
|
||
|
||
if err := nextTerminal.Shell(); err != nil {
|
||
return err
|
||
}
|
||
|
||
sess := model.Session{
|
||
ConnectionId: sessionId,
|
||
Width: cols,
|
||
Height: rows,
|
||
Status: constant.Connecting,
|
||
Recording: recording,
|
||
}
|
||
if sess.Recording == "" {
|
||
// 未录屏时无需审计
|
||
sess.Reviewed = true
|
||
}
|
||
// 创建新会话
|
||
log.Debugf("创建新会话 %v", sess.ConnectionId)
|
||
if err := repository.SessionRepository.UpdateById(ctx, &sess, sessionId); err != nil {
|
||
return err
|
||
}
|
||
|
||
if err := WriteMessage(ws, dto.NewMessage(Connected, "")); err != nil {
|
||
return err
|
||
}
|
||
|
||
nextSession := &session.Session{
|
||
ID: s.ID,
|
||
Protocol: s.Protocol,
|
||
Mode: s.Mode,
|
||
WebSocket: ws,
|
||
GuacdTunnel: nil,
|
||
NextTerminal: nextTerminal,
|
||
Observer: session.NewObserver(s.ID),
|
||
}
|
||
go nextSession.Observer.Start()
|
||
session.GlobalSessionManager.Add <- nextSession
|
||
|
||
termHandler := NewTermHandler(sessionId, isRecording, ws, nextTerminal)
|
||
termHandler.Start()
|
||
defer termHandler.Stop()
|
||
|
||
for {
|
||
_, message, err := ws.ReadMessage()
|
||
if err != nil {
|
||
// web socket会话关闭后主动关闭ssh会话
|
||
log.Debugf("WebSocket已关闭")
|
||
service.SessionService.CloseSessionById(sessionId, Normal, "用户正常退出")
|
||
break
|
||
}
|
||
|
||
msg, err := dto.ParseMessage(string(message))
|
||
if err != nil {
|
||
log.Warnf("消息解码失败: %v, 原始字符串：%v", err, string(message))
|
||
continue
|
||
}
|
||
|
||
switch msg.Type {
|
||
case Resize:
|
||
decodeString, err := base64.StdEncoding.DecodeString(msg.Content)
|
||
if err != nil {
|
||
log.Warnf("Base64解码失败: %v，原始字符串：%v", err, msg.Content)
|
||
continue
|
||
}
|
||
var winSize dto.WindowSize
|
||
err = json.Unmarshal(decodeString, &winSize)
|
||
if err != nil {
|
||
log.Warnf("解析SSH会话窗口大小失败: %v，原始字符串：%v", err, msg.Content)
|
||
continue
|
||
}
|
||
if err := nextTerminal.WindowChange(winSize.Rows, winSize.Cols); err != nil {
|
||
log.Warnf("更改SSH会话窗口大小失败: %v", err)
|
||
}
|
||
_ = repository.SessionRepository.UpdateWindowSizeById(ctx, winSize.Rows, winSize.Cols, sessionId)
|
||
case Data:
|
||
input := []byte(msg.Content)
|
||
_, err := nextTerminal.Write(input)
|
||
if err != nil {
|
||
service.SessionService.CloseSessionById(sessionId, TunnelClosed, "远程连接已关闭")
|
||
}
|
||
case Ping:
|
||
_, _, err := nextTerminal.SshClient.Conn.SendRequest("helloworld1024@foxmail.com", true, nil)
|
||
if err != nil {
|
||
service.SessionService.CloseSessionById(sessionId, TunnelClosed, "远程连接已关闭")
|
||
} else {
|
||
_ = WriteMessage(ws, dto.NewMessage(Ping, ""))
|
||
}
|
||
|
||
}
|
||
}
|
||
return err
|
||
}
|
||
|
||
func (api WebTerminalApi) SshMonitorEndpoint(c echo.Context) error {
|
||
ws, err := UpGrader.Upgrade(c.Response().Writer, c.Request(), nil)
|
||
if err != nil {
|
||
log.Errorf("升级为WebSocket协议失败：%v", err.Error())
|
||
return err
|
||
}
|
||
|
||
defer func() {
|
||
_ = ws.Close()
|
||
}()
|
||
ctx := context.TODO()
|
||
|
||
sessionId := c.Param("id")
|
||
s, err := repository.SessionRepository.FindById(ctx, sessionId)
|
||
if err != nil {
|
||
return WriteMessage(ws, dto.NewMessage(Closed, "获取会话失败"))
|
||
}
|
||
|
||
nextSession := session.GlobalSessionManager.GetById(sessionId)
|
||
if nextSession == nil {
|
||
return WriteMessage(ws, dto.NewMessage(Closed, "会话已离线"))
|
||
}
|
||
|
||
obId := utils.UUID()
|
||
obSession := &session.Session{
|
||
ID: obId,
|
||
Protocol: s.Protocol,
|
||
Mode: s.Mode,
|
||
WebSocket: ws,
|
||
}
|
||
nextSession.Observer.Add <- obSession
|
||
log.Debugf("会话 %v 观察者 %v 进入", sessionId, obId)
|
||
|
||
for {
|
||
_, _, err := ws.ReadMessage()
|
||
if err != nil {
|
||
log.Debugf("会话 %v 观察者 %v 退出", sessionId, obId)
|
||
nextSession.Observer.Del <- obId
|
||
break
|
||
}
|
||
}
|
||
return nil
|
||
}
|
||
|
||
func (api WebTerminalApi) permissionCheck(c echo.Context, assetId string) error {
|
||
user, _ := GetCurrentAccount(c)
|
||
if constant.TypeUser == user.Type {
|
||
// 检测是否有访问权限
|
||
assetIds, err := repository.ResourceSharerRepository.FindAssetIdsByUserId(context.TODO(), user.ID)
|
||
if err != nil {
|
||
return err
|
||
}
|
||
|
||
if !utils.Contains(assetIds, assetId) {
|
||
return errors.New("您没有权限访问此资产")
|
||
}
|
||
}
|
||
return nil
|
||
}
|
||
|
||
func WriteMessage(ws *websocket.Conn, msg dto.Message) error {
|
||
message := []byte(msg.ToString())
|
||
return ws.WriteMessage(websocket.TextMessage, message)
|
||
}
|
||
|
||
func CreateNextTerminalBySession(session model.Session) (*term.NextTerminal, error) {
|
||
var (
|
||
username = session.Username
|
||
password = session.Password
|
||
privateKey = session.PrivateKey
|
||
passphrase = session.Passphrase
|
||
ip = session.IP
|
||
port = session.Port
|
||
)
|
||
return term.NewNextTerminal(ip, port, username, password, privateKey, passphrase, 10, 10, "", "", false)
|
||
}
|