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interactive.go
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374 lines (332 loc) · 9.14 KB
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package handler
import (
"fmt"
"io"
"sort"
"strconv"
"strings"
"sync"
"time"
"github.com/gliderlabs/ssh"
"github.com/xlab/treeprint"
"github.com/jumpserver/koko/pkg/common"
"github.com/jumpserver/koko/pkg/config"
"github.com/jumpserver/koko/pkg/i18n"
"github.com/jumpserver/koko/pkg/jms-sdk-go/model"
"github.com/jumpserver/koko/pkg/jms-sdk-go/service"
"github.com/jumpserver/koko/pkg/logger"
"github.com/jumpserver/koko/pkg/utils"
)
func NewInteractiveHandler(sess ssh.Session, user *model.User, jmsService *service.JMService, termConfig model.TerminalConfig) *InteractiveHandler {
wrapperSess := NewWrapperSession(sess)
term := utils.NewTerminal(wrapperSess, "Opt> ")
handler := &InteractiveHandler{
sess: wrapperSess,
user: user,
term: term,
jmsService: jmsService,
terminalConf: &termConfig,
}
handler.Initial()
return handler
}
var (
// 全局永久缓存 ssh 登录用户切换的语言
userLangGlobalStore = sync.Map{}
)
type InteractiveHandler struct {
sess *WrapperSession
user *model.User
term *utils.Terminal
selectHandler *UserSelectHandler
nodes model.NodeList
assetLoadPolicy string
wg sync.WaitGroup
jmsService *service.JMService
terminalConf *model.TerminalConfig
i18nLang string
}
func (h *InteractiveHandler) Initial() {
conf := config.GetConf()
if conf.ClientAliveInterval > 0 {
go h.keepSessionAlive(time.Duration(conf.ClientAliveInterval) * time.Second)
}
h.assetLoadPolicy = strings.ToLower(conf.AssetLoadPolicy)
h.i18nLang = conf.LanguageCode
if langCode, ok := userLangGlobalStore.Load(h.user.ID); ok {
h.i18nLang = langCode.(string)
}
h.displayHelp()
h.selectHandler = &UserSelectHandler{
user: h.user,
h: h,
pageInfo: &pageInfo{},
}
switch h.assetLoadPolicy {
case "all":
allAssets, err := h.jmsService.GetAllUserPermsAssets(h.user.ID)
if err != nil {
logger.Errorf("Get all user perms assets failed: %s", err)
}
h.selectHandler.SetAllLocalData(allAssets)
}
h.firstLoadData()
}
func (h *InteractiveHandler) firstLoadData() {
h.wg.Add(1)
go func() {
defer h.wg.Done()
h.loadUserNodes()
}()
}
func (h *InteractiveHandler) displayHelp() {
h.term.SetPrompt("Opt> ")
h.displayBanner(h.sess, h.user.Name, h.terminalConf)
}
func (h *InteractiveHandler) WatchWinSizeChange(winChan <-chan ssh.Window) {
defer logger.Infof("Request %s: Windows change watch close", h.sess.Uuid)
for {
select {
case <-h.sess.Sess.Context().Done():
return
case win, ok := <-winChan:
if !ok {
return
}
h.sess.SetWin(win)
logger.Debugf("Term window size change: %d*%d", win.Height, win.Width)
_ = h.term.SetSize(win.Width, win.Height)
}
}
}
func (h *InteractiveHandler) keepSessionAlive(keepAliveTime time.Duration) {
t := time.NewTicker(keepAliveTime)
defer t.Stop()
for {
select {
case <-h.sess.Sess.Context().Done():
return
case <-t.C:
_, err := h.sess.Sess.SendRequest("keepalive@openssh.com", true, nil)
if err != nil {
logger.Errorf("Request %s: Send user %s keepalive packet failed: %s",
h.sess.Uuid, h.user.Name, err)
continue
}
logger.Debugf("Request %s: Send user %s keepalive packet success", h.sess.Uuid, h.user.Name)
}
}
}
func (h *InteractiveHandler) chooseSystemUser(systemUsers []model.SystemUser) (systemUser model.SystemUser, ok bool) {
length := len(systemUsers)
switch length {
case 0:
warningInfo := i18n.T("No system user found.")
_, _ = io.WriteString(h.term, warningInfo+"\n\r")
return model.SystemUser{}, false
case 1:
return systemUsers[0], true
default:
}
displaySystemUsers := selectHighestPrioritySystemUsers(systemUsers)
if len(displaySystemUsers) == 1 {
return displaySystemUsers[0], true
}
idLabel := i18n.T("ID")
nameLabel := i18n.T("Name")
usernameLabel := i18n.T("Username")
labels := []string{idLabel, nameLabel, usernameLabel}
fields := []string{"ID", "Name", "Username"}
data := make([]map[string]string, len(displaySystemUsers))
for i, j := range displaySystemUsers {
row := make(map[string]string)
row["ID"] = strconv.Itoa(i + 1)
row["Name"] = j.Name
row["Username"] = j.Username
data[i] = row
}
w, _ := h.term.GetSize()
table := common.WrapperTable{
Fields: fields,
Labels: labels,
FieldsSize: map[string][3]int{
"ID": {0, 0, 5},
"Name": {0, 8, 0},
"Username": {0, 10, 0},
},
Data: data,
TotalSize: w,
TruncPolicy: common.TruncMiddle,
}
table.Initial()
h.term.SetPrompt("ID> ")
selectTip := i18n.T("Tips: Enter system user ID and directly login")
backTip := i18n.T("Back: B/b")
for {
utils.IgnoreErrWriteString(h.term, table.Display())
utils.IgnoreErrWriteString(h.term, utils.WrapperString(selectTip, utils.Green))
utils.IgnoreErrWriteString(h.term, utils.CharNewLine)
utils.IgnoreErrWriteString(h.term, utils.WrapperString(backTip, utils.Green))
utils.IgnoreErrWriteString(h.term, utils.CharNewLine)
line, err := h.term.ReadLine()
if err != nil {
return
}
line = strings.TrimSpace(line)
switch strings.ToLower(line) {
case "q", "b", "quit", "exit", "back":
return
}
if num, err := strconv.Atoi(line); err == nil {
if num > 0 && num <= len(displaySystemUsers) {
return displaySystemUsers[num-1], true
}
}
}
}
func (h *InteractiveHandler) refreshAssetsAndNodesData() {
h.wg.Add(2)
go func() {
defer h.wg.Done()
allAssets, err := h.jmsService.RefreshUserAllPermsAssets(h.user.ID)
if err != nil {
logger.Errorf("Refresh user all perms assets error: %s", err)
return
}
if h.assetLoadPolicy == "all" {
h.selectHandler.SetAllLocalData(allAssets)
}
}()
go func() {
defer h.wg.Done()
nodes, err := h.jmsService.RefreshUserNodes(h.user.ID)
if err != nil {
logger.Errorf("Refresh user nodes error: %s", err)
return
}
h.nodes = nodes
tConfig, err := h.jmsService.GetTerminalConfig()
if err != nil {
logger.Errorf("Refresh user terminal config error: %s", err)
return
}
h.terminalConf = &tConfig
}()
h.wg.Wait()
_, err := io.WriteString(h.term, i18n.T("Refresh done")+"\n\r")
if err != nil {
logger.Error("refresh Assets Nodes err:", err)
}
}
func (h *InteractiveHandler) loadUserNodes() {
nodes, err := h.jmsService.GetUserNodes(h.user.ID)
if err != nil {
logger.Errorf("Get user nodes error: %s", err)
return
}
h.nodes = nodes
}
func selectHighestPrioritySystemUsers(systemUsers []model.SystemUser) []model.SystemUser {
length := len(systemUsers)
if length == 0 {
return systemUsers
}
var result = make([]model.SystemUser, 0)
model.SortSystemUserByPriority(systemUsers)
highestPriority := systemUsers[0].Priority
result = append(result, systemUsers[0])
for i := 1; i < length; i++ {
if highestPriority == systemUsers[i].Priority {
result = append(result, systemUsers[i])
}
}
return result
}
func getPageSize(term *utils.Terminal, termConf *model.TerminalConfig) int {
var (
pageSize int
minHeight = 8 // 分页显示的最小高度
)
_, height := term.GetSize()
AssetListPageSize := termConf.AssetListPageSize
switch AssetListPageSize {
case "auto":
pageSize = height - minHeight
case "all":
return PAGESIZEALL
default:
if value, err := strconv.Atoi(AssetListPageSize); err == nil {
pageSize = value
} else {
pageSize = height - minHeight
}
}
if pageSize <= 0 {
pageSize = 1
}
return pageSize
}
func ConstructNodeTree(assetNodes []model.Node) treeprint.Tree {
model.SortNodesByKey(assetNodes)
keyIndexMap := make(map[string]int)
for index := range assetNodes {
keyIndexMap[assetNodes[index].Key] = index
}
rootTree := treeprint.New()
constructDisplayTree(rootTree, convertToDisplayTrees(assetNodes), keyIndexMap)
return rootTree
}
func constructDisplayTree(tree treeprint.Tree, rootNodes []*displayTree, keyMap map[string]int) {
for i := 0; i < len(rootNodes); i++ {
subTree := tree.AddBranch(fmt.Sprintf("%d.%s(%s)",
keyMap[rootNodes[i].Key]+1, rootNodes[i].node.Name,
strconv.Itoa(rootNodes[i].node.AssetsAmount)))
if len(rootNodes[i].subTrees) > 0 {
sort.Sort(nodeTrees(rootNodes[i].subTrees))
constructDisplayTree(subTree, rootNodes[i].subTrees, keyMap)
}
}
}
func convertToDisplayTrees(assetNodes []model.Node) []*displayTree {
var rootNodeTrees []*displayTree
nodeTreeMap := make(map[string]*displayTree)
for i := 0; i < len(assetNodes); i++ {
currentTree := displayTree{
Key: assetNodes[i].Key,
node: assetNodes[i],
}
r := strings.LastIndex(assetNodes[i].Key, ":")
if r < 0 {
rootNodeTrees = append(rootNodeTrees, ¤tTree)
nodeTreeMap[assetNodes[i].Key] = ¤tTree
continue
}
nodeTreeMap[assetNodes[i].Key] = ¤tTree
parentKey := assetNodes[i].Key[:r]
parentTree, ok := nodeTreeMap[parentKey]
if !ok {
rootNodeTrees = append(rootNodeTrees, ¤tTree)
continue
}
parentTree.AddSubNode(¤tTree)
}
return rootNodeTrees
}
type displayTree struct {
Key string
node model.Node
subTrees []*displayTree
}
func (t *displayTree) AddSubNode(sub *displayTree) {
t.subTrees = append(t.subTrees, sub)
}
type nodeTrees []*displayTree
func (l nodeTrees) Len() int {
return len(l)
}
func (l nodeTrees) Swap(i, j int) {
l[i], l[j] = l[j], l[i]
}
func (l nodeTrees) Less(i, j int) bool {
return l[i].node.Name < l[j].node.Name
}