Files
oneterm/backend/internal/sshsrv/view.go

921 lines
24 KiB
Go

package sshsrv
import (
"bufio"
"context"
"fmt"
"io"
"net/http"
"net/url"
"sort"
"strings"
"time"
"github.com/charmbracelet/bubbles/help"
"github.com/charmbracelet/bubbles/key"
"github.com/charmbracelet/bubbles/spinner"
tea "github.com/charmbracelet/bubbletea"
"github.com/charmbracelet/lipgloss"
"github.com/gin-gonic/gin"
"github.com/gliderlabs/ssh"
"github.com/samber/lo"
"github.com/spf13/cast"
"go.uber.org/zap"
"golang.org/x/sync/errgroup"
"github.com/veops/oneterm/internal/acl"
"github.com/veops/oneterm/internal/api/controller"
myConnector "github.com/veops/oneterm/internal/connector"
"github.com/veops/oneterm/internal/model"
"github.com/veops/oneterm/internal/repository"
"github.com/veops/oneterm/internal/service"
"github.com/veops/oneterm/internal/session"
"github.com/veops/oneterm/internal/sshsrv/assetlist"
"github.com/veops/oneterm/internal/sshsrv/colors"
"github.com/veops/oneterm/internal/sshsrv/icons"
"github.com/veops/oneterm/internal/sshsrv/textinput"
"github.com/veops/oneterm/pkg/cache"
"github.com/veops/oneterm/pkg/logger"
)
const (
prompt = "> "
hisCmdsFmt = "hiscmds-%d"
)
var (
errStyle = colors.ErrorStyle
hintStyle = colors.HintStyle
warningStyle = colors.WarningStyle
hiddenBorder = lipgloss.HiddenBorder()
p2p = map[string]int{
"ssh": 22,
"redis": 6379,
"mysql": 3306,
"mongodb": 27017,
"postgresql": 5432,
"telnet": 23,
}
)
func init() {
hiddenBorder.Left = " "
}
type errMsg error
type keymap struct{}
func (k keymap) ShortHelp() []key.Binding {
return []key.Binding{
key.NewBinding(key.WithKeys("up/down"), key.WithHelp("↑/↓", "navigate suggestions")),
key.NewBinding(key.WithKeys("tab"), key.WithHelp("tab", "auto-complete")),
key.NewBinding(key.WithKeys("f5"), key.WithHelp("F5", "refresh")),
key.NewBinding(key.WithKeys("enter"), key.WithHelp("enter", "connect")),
key.NewBinding(key.WithKeys("esc"), key.WithHelp("esc", "quit")),
}
}
func (k keymap) FullHelp() [][]key.Binding {
return [][]key.Binding{k.ShortHelp()}
}
type viewMode int
const (
modeCLI viewMode = iota
modeTable
)
type view struct {
Ctx *gin.Context
Sess ssh.Session
currentUser *acl.Session
textinput textinput.Model
assetTable assetlist.Model
spinner spinner.Model
cmds []string
cmdsIdx int
combines map[string][3]int
connecting bool
help help.Model
keys keymap
r io.ReadCloser
w io.WriteCloser
gctx context.Context
mode viewMode
suggestionIdx int // Track current suggestion selection
selectedSugg string // Store the selected suggestion text
}
func initialView(ctx *gin.Context, sess ssh.Session, r io.ReadCloser, w io.WriteCloser, gctx context.Context) *view {
currentUser, _ := acl.GetSessionFromCtx(ctx)
ti := textinput.New()
ti.Placeholder = "Type 'help' or start with 'ssh user@host'..."
ti.Focus()
ti.Prompt = prompt
ti.ShowSuggestions = true
ti.PromptStyle = colors.PrimaryStyle
ti.Cursor.Style = colors.AccentStyle
// Disable Tab for AcceptSuggestion to handle it ourselves
ti.KeyMap.AcceptSuggestion = key.NewBinding(key.WithKeys("ctrl+x")) // Use a key that won't be pressed
// Initialize spinner
s := spinner.New()
s.Spinner = spinner.Dot
s.Style = colors.PrimaryStyle
v := view{
Ctx: ctx,
Sess: sess,
currentUser: currentUser,
textinput: ti,
spinner: s,
cmds: []string{},
help: help.New(),
r: r,
w: w,
gctx: gctx,
mode: modeCLI,
suggestionIdx: 0,
}
v.refresh()
return &v
}
func (m *view) Init() tea.Cmd {
welcomeStyle := colors.AccentStyle
exampleStyle := colors.HintStyle
return tea.Batch(
tea.Println(banner()),
tea.Printf("\n %s\n\n", welcomeStyle.Render("→ Welcome to OneTerm! Start typing or use 'ls' to browse assets")),
tea.Printf(" %s\n", exampleStyle.Render("Examples: ssh admin@server1, mysql db@prod, redis cache@redis")),
)
}
func (m *view) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
var (
hisCmd tea.Cmd
tiCmd tea.Cmd
tableCmd tea.Cmd
spinnerCmd tea.Cmd
)
// Update spinner if connecting
if m.connecting {
m.spinner, spinnerCmd = m.spinner.Update(msg)
}
// Handle table mode
if m.mode == modeTable {
// Let table handle the message first
m.assetTable, tableCmd = m.assetTable.Update(msg)
// Check for special messages after table has processed them
switch msg := msg.(type) {
case assetlist.ConnectMsg:
// Handle connection from table
m.mode = modeCLI
cmd := msg.Asset.Command
return m, m.handleConnectionCommand(cmd)
case assetlist.BackMsg:
// Exit table mode when Back is triggered
m.mode = modeCLI
return m, tea.Printf("\r%s", prompt)
case tea.KeyMsg:
// Only exit on Esc/q if filter is NOT active
if !m.assetTable.IsFilterActive() && (msg.Type == tea.KeyEsc || msg.String() == "q") {
// Exit table mode
m.mode = modeCLI
return m, tea.Printf("\r%s", prompt)
}
}
return m, tableCmd
}
// Handle CLI mode
switch msg := msg.(type) {
case tea.KeyMsg:
switch msg.Type {
case tea.KeyCtrlC:
// Clear current input like in terminal, don't quit
m.textinput.Reset()
m.suggestionIdx = 0
m.selectedSugg = ""
return m, tea.Printf("\n%s", prompt)
case tea.KeyEsc:
return m, tea.Quit
case tea.KeyEnter:
// Use selected suggestion if one is selected, otherwise use typed value
cmd := m.textinput.Value()
if m.selectedSugg != "" {
cmd = m.selectedSugg
}
m.textinput.Reset()
m.selectedSugg = ""
m.suggestionIdx = 0
if cmd == "" {
return m, tea.Batch(tea.Printf(prompt))
}
hisCmd = tea.Printf("🚀 %s", cmd)
m.cmds = append(m.cmds, cmd)
ln := len(m.cmds)
if ln > 100 {
m.cmds = m.cmds[ln-100 : ln]
}
m.cmdsIdx = len(m.cmds)
switch {
case cmd == "exit" || cmd == "quit" || cmd == `\q`:
return m, tea.Sequence(tea.Printf("👋 Goodbye!"), tea.Quit)
case cmd == "help" || cmd == `\h` || cmd == `\?`:
return m, tea.Sequence(hisCmd, tea.Printf(m.helpText()), tea.Printf("%s", prompt))
case cmd == "clear" || cmd == `\c`:
return m, tea.ClearScreen
case cmd == "list" || cmd == "ls" || cmd == "table":
pty, _, _ := m.Sess.Pty()
// Ensure we have reasonable default dimensions if pty size is not available
width := pty.Window.Width
height := pty.Window.Height
if width <= 0 {
width = 80 // Standard terminal width
}
if height <= 0 {
height = 24 // Standard terminal height
}
m.assetTable = assetlist.New(m.combines, width, height)
m.mode = modeTable
// Send a window size message to ensure consistent initial state
sizeMsg := tea.WindowSizeMsg{Width: width, Height: height}
m.assetTable, _ = m.assetTable.Update(sizeMsg)
return m, tea.ClearScreen
case cmd == "recent" || cmd == "r" || cmd == `\r`:
// Show recent sessions in table mode
pty, _, _ := m.Sess.Pty()
width := pty.Window.Width
height := pty.Window.Height
if width <= 0 {
width = 80
}
if height <= 0 {
height = 24
}
// Get recent sessions (filtered at database level)
sessions, err := m.getRecentSessions()
if err != nil {
return m, tea.Sequence(
hisCmd,
tea.Printf("\n %s Failed to fetch recent sessions: %v\n\n", errStyle.Render("⚠️"), err),
tea.Printf("%s", prompt),
)
}
if len(sessions) == 0 {
return m, tea.Sequence(
hisCmd,
tea.Printf("\n %s\n\n", hintStyle.Render("📋 No recent sessions found")),
tea.Printf("%s", prompt),
)
}
// Create recent sessions table
m.assetTable = assetlist.NewRecentSessions(sessions, m.combines, width, height)
m.mode = modeTable
sizeMsg := tea.WindowSizeMsg{Width: width, Height: height}
m.assetTable, _ = m.assetTable.Update(sizeMsg)
return m, tea.ClearScreen
}
// Try to handle as connection command
if connectionCmd := m.handleConnectionCommand(cmd); connectionCmd != nil {
return m, tea.Sequence(
hisCmd,
connectionCmd,
)
} else {
var suggestion string
if strings.Contains(cmd, "@") {
suggestion = "\n💪 Try: ssh " + cmd + " (if connecting via SSH)"
} else {
suggestion = "\n💪 Available commands: ssh, mysql, redis, mongodb, postgresql, telnet, help, list, exit"
}
return m, tea.Sequence(
hisCmd,
tea.Printf(" %s %s%s\n\n",
errStyle.Render("⚠️ Unknown command:"),
cmd,
hintStyle.Render(suggestion),
),
tea.Printf("%s", prompt),
)
}
case tea.KeyUp:
// If we have suggestions and input is not empty, navigate suggestions
input := m.textinput.Value()
if len(input) > 0 {
suggestions := m.getFilteredSuggestions(input)
if len(suggestions) > 0 {
if m.suggestionIdx > 0 {
m.suggestionIdx--
if m.suggestionIdx < len(suggestions) {
m.selectedSugg = suggestions[m.suggestionIdx]
}
}
return m, nil
}
}
// Otherwise navigate command history
ln := len(m.cmds)
if ln <= 0 {
return m, nil
}
m.cmdsIdx = max(0, m.cmdsIdx-1)
m.textinput.SetValue(m.cmds[m.cmdsIdx])
m.suggestionIdx = 0
m.selectedSugg = ""
case tea.KeyDown:
// If we have suggestions and input is not empty, navigate suggestions
input := m.textinput.Value()
if len(input) > 0 {
suggestions := m.getFilteredSuggestions(input)
if len(suggestions) > 0 {
limit := min(8, len(suggestions))
if m.suggestionIdx < limit-1 {
m.suggestionIdx++
if m.suggestionIdx < len(suggestions) {
m.selectedSugg = suggestions[m.suggestionIdx]
}
}
return m, nil
}
}
// Otherwise navigate command history
ln := len(m.cmds)
m.cmdsIdx++
if m.cmdsIdx >= ln {
m.cmdsIdx = ln - 1
m.textinput.SetValue("")
} else {
m.textinput.SetValue(m.cmds[m.cmdsIdx])
}
m.suggestionIdx = 0
m.selectedSugg = ""
case tea.KeyF5:
m.refresh()
case tea.KeyTab:
// Auto-complete with common prefix or selected suggestion
input := m.textinput.Value()
if input == "" {
return m, nil
}
suggestions := m.getFilteredSuggestions(input)
if len(suggestions) == 0 {
return m, nil
}
if len(suggestions) == 1 {
// Single match - complete fully
m.textinput.SetValue(suggestions[0])
m.textinput.CursorEnd() // Move cursor to end
m.selectedSugg = ""
m.suggestionIdx = 0
} else {
// Multiple matches - complete to common prefix
commonPrefix := m.findCommonPrefix(suggestions)
if len(commonPrefix) > len(input) {
m.textinput.SetValue(commonPrefix)
m.textinput.CursorEnd() // Move cursor to end
m.selectedSugg = ""
m.suggestionIdx = 0
}
}
}
case errMsg:
if msg != nil {
return m, tea.Printf(" [ERROR] %s\n\n%s", errStyle.Render(msg.Error()), prompt)
}
}
// Reset suggestion index and selected when typing
if msg, ok := msg.(tea.KeyMsg); ok && msg.Type == tea.KeyRunes {
m.suggestionIdx = 0
m.selectedSugg = ""
}
m.textinput, tiCmd = m.textinput.Update(msg)
return m, tea.Batch(hisCmd, tiCmd, spinnerCmd)
}
func (m *view) View() string {
if m.connecting {
return m.renderConnectingStatus()
}
if m.mode == modeTable {
tableOutput := m.assetTable.View()
lines := strings.Split(tableOutput, "\n")
for i := range lines {
lines[i] = strings.TrimPrefix(lines[i], " ")
}
return strings.Join(lines, "\n")
}
suggestionView := m.smartSuggestionView()
return fmt.Sprintf(
"%s\n %s\n%s%s",
m.textinput.View(),
m.help.View(m.keys),
suggestionView,
m.assetOverview(),
) + "\n\n"
}
func (m *view) smartSuggestionView() string {
// Get all suggestions and filter them ourselves for better matching
input := strings.ToLower(m.textinput.Value())
if input == "" {
return ""
}
// Use our consistent filtered suggestions function
matches := m.getFilteredSuggestions(input)
ln := len(matches)
if ln <= 0 {
return ""
}
if ln > 20 {
countStyle := lipgloss.NewStyle().
Foreground(colors.TextSecondary).
Italic(true)
return "\n " + countStyle.Render(fmt.Sprintf("%d matches found. Keep typing to filter...", ln)) + "\n"
}
// Clean and validate matches before displaying
cleanMatches := make([]string, 0, len(matches))
for _, match := range matches {
match = strings.TrimSpace(match)
// Only filter out truly empty matches
if match != "" {
cleanMatches = append(cleanMatches, match)
}
}
if len(cleanMatches) == 0 {
return ""
}
limit := min(8, len(cleanMatches))
displaySuggestions := cleanMatches[:limit]
// Ensure suggestion index is within bounds
if m.suggestionIdx >= limit {
m.suggestionIdx = limit - 1
}
var result strings.Builder
suggestTitle := colors.SubtitleStyle
result.WriteString("\n " + suggestTitle.Render("Suggestions:") + "\n")
// Render each suggestion
for i, suggestion := range displaySuggestions {
// Get protocol for icon
parts := strings.Fields(suggestion)
protocol := "unknown"
if len(parts) > 0 {
protocol = parts[0]
}
icon := icons.GetStyledProtocolIcon(protocol)
// Render with appropriate style
if i == m.suggestionIdx {
selectedStyle := colors.HighlightStyle
result.WriteString(fmt.Sprintf(" → %s %s\n", icon, selectedStyle.Render(suggestion)))
} else {
// Use a lighter color for non-selected suggestions on dark background
normalStyle := lipgloss.NewStyle().Foreground(lipgloss.Color("#CCCCCC"))
result.WriteString(fmt.Sprintf(" %s %s\n", icon, normalStyle.Render(suggestion)))
}
}
// Show count if there are more suggestions
if len(cleanMatches) > limit {
moreStyle := lipgloss.NewStyle().
Foreground(colors.TextSecondary).
Italic(true)
result.WriteString(" " + moreStyle.Render(fmt.Sprintf("... +%d more", len(cleanMatches)-limit)) + "\n")
}
return result.String()
}
// renderConnectingStatus displays animated connecting status
func (m *view) renderConnectingStatus() string {
return fmt.Sprintf("\n %s Connecting...\n\n", m.spinner.View())
}
func (m *view) helpText() string {
return fmt.Sprintf(`%s
%s
• ssh user@host - Connect via SSH
• mysql user@host - Connect to MySQL database
• redis user@host - Connect to Redis server
• mongodb user@host - Connect to MongoDB database
• postgresql user@host - Connect to PostgreSQL database
• telnet user@host - Connect via Telnet
• list/ls/table - Show assets in interactive table
• recent or r or \r - Show recent sessions with last login time
• help or \h or \? - Show this help message
• clear or \c - Clear screen
• exit/quit or \q - Exit OneTerm
%s
• Use ↑/↓ arrows to browse command history
• Press Tab to autocomplete connection names
• Press Ctrl+C to clear current input
• Press F5 to refresh asset list
`,
colors.TitleStyle.Render("🌟 OneTerm Help"),
hintStyle.Render("📝 Available Commands:"),
hintStyle.Render("⌨️ Keyboard Shortcuts:"),
)
}
func (m *view) handleConnectionCommand(cmd string) tea.Cmd {
// Check if this is a valid connection command
if _, exists := m.combines[cmd]; !exists {
return nil
}
// Extract protocol from command
p, ok := lo.Find(lo.Keys(p2p), func(item string) bool { return strings.HasPrefix(cmd, item) })
if !ok {
return nil
}
// Setup connection parameters
pty, _, _ := m.Sess.Pty()
// Create a copy of the context first to avoid modifying the original
newCtx := m.Ctx.Copy()
// Ensure Request and URL are properly initialized
if newCtx.Request == nil {
newCtx.Request = &http.Request{
RemoteAddr: m.Sess.RemoteAddr().String(),
URL: &url.URL{},
}
}
if newCtx.Request.URL == nil {
newCtx.Request.URL = &url.URL{}
}
newCtx.Request.URL.RawQuery = fmt.Sprintf("w=%d&h=%d", pty.Window.Width, pty.Window.Height)
newCtx.Params = nil
newCtx.Params = append(newCtx.Params, gin.Param{Key: "account_id", Value: cast.ToString(m.combines[cmd][0])})
newCtx.Params = append(newCtx.Params, gin.Param{Key: "asset_id", Value: cast.ToString(m.combines[cmd][1])})
newCtx.Params = append(newCtx.Params, gin.Param{Key: "protocol", Value: fmt.Sprintf("%s:%d", p, m.combines[cmd][2])})
newCtx.Set("sessionType", model.SESSIONTYPE_CLIENT)
m.connecting = true
return tea.Sequence(
tea.Printf("\n %s %s\n",
colors.PrimaryStyle.Render("⚡"),
colors.AccentStyle.Render(fmt.Sprintf("Initiating secure connection to %s", cmd))),
// Start spinner and connection in background
m.spinner.Tick,
tea.Exec(&connector{Ctx: newCtx, Sess: m.Sess, Vw: m, gctx: m.gctx}, func(err error) tea.Msg {
m.connecting = false
if err != nil {
return errMsg(fmt.Errorf("%s Connection failed: %v",
colors.ErrorStyle.Render("✗"), err))
}
// Return a success message to update the UI
return tea.Printf("\r\n%s Connection established successfully.\r\n%s",
colors.PrimaryStyle.Render("✓"), prompt)
}),
tea.Printf("%s", prompt),
func() tea.Msg {
m.textinput.ClearMatched()
return nil
},
m.magicn,
)
}
func (m *view) assetOverview() string {
if len(m.textinput.Value()) > 0 {
return "" // Hide overview when user is typing
}
if len(m.combines) == 0 {
return warningStyle.Render("\n ⚠ No accessible assets found. Check your permissions.")
}
// Group assets by protocol for better organization
protocolGroups := make(map[string][]string)
for cmd := range m.combines {
parts := strings.Split(cmd, " ")
if len(parts) > 0 {
protocol := parts[0]
protocolGroups[protocol] = append(protocolGroups[protocol], cmd)
}
}
// Provide a better tip with modern styling
textStyle := lipgloss.NewStyle().
Foreground(colors.TextSecondary)
cmdStyle := lipgloss.NewStyle().
Foreground(colors.PrimaryColor9).
Bold(true)
arrowStyle := lipgloss.NewStyle().
Foreground(colors.PrimaryColor2)
// Build the tip text with each part styled correctly
parts := []string{
arrowStyle.Render("→"),
textStyle.Render("Type"),
cmdStyle.Render("'ls'"),
textStyle.Render("for interactive mode,"),
cmdStyle.Render("'recent'"),
textStyle.Render("for recent sessions, or start typing to connect"),
}
fullTip := strings.Join(parts, " ")
return lipgloss.NewStyle().PaddingTop(1).Render(fullTip)
}
func (m *view) refresh() {
eg := &errgroup.Group{}
eg.Go(func() (err error) {
assets, err := repository.GetAllFromCacheDb(m.gctx, model.DefaultAsset)
if err != nil {
return
}
accounts, err := repository.GetAllFromCacheDb(m.gctx, model.DefaultAccount)
if err != nil {
return
}
if !acl.IsAdmin(m.currentUser) {
var assetIds, accountIds []int
// Use V2 authorization system for asset filtering
authV2Service := service.NewAuthorizationV2Service()
if _, assetIds, _, err = authV2Service.GetAuthorizationScopeByACL(m.Ctx); err != nil {
return
}
assets = lo.Filter(assets, func(a *model.Asset, _ int) bool { return lo.Contains(assetIds, a.Id) })
if accountIds, err = controller.GetAccountIdsByAuthorization(m.Ctx); err != nil {
return
}
accounts = lo.Filter(accounts, func(a *model.Account, _ int) bool { return lo.Contains(accountIds, a.Id) })
}
accountMap := lo.SliceToMap(accounts, func(a *model.Account) (int, *model.Account) { return a.Id, a })
m.combines = make(map[string][3]int)
for _, asset := range assets {
for accountId, authData := range asset.Authorization {
account, ok := accountMap[accountId]
if !ok {
continue
}
// Check if this account has connect permission
if authData.Permissions == nil || !authData.Permissions.Connect {
continue
}
for _, p := range asset.Protocols {
ss := strings.Split(p, ":")
if len(ss) != 2 {
continue
}
protocol := ss[0]
defaultPort, ok := p2p[protocol]
if !ok {
continue
}
k := fmt.Sprintf("%s %s@%s", protocol, account.Name, asset.Name)
port := cast.ToInt(ss[1])
// Ensure we're not creating empty or malformed keys
if k != "" && len(k) > 3 {
m.combines[lo.Ternary(port == defaultPort, k, fmt.Sprintf("%s:%s", k, ss[1]))] = [3]int{account.Id, asset.Id, port}
}
}
}
}
m.textinput.SetSuggestions(lo.Keys(m.combines))
return
})
eg.Go(func() error {
var err error
if len(m.cmds) != 0 {
return err
}
m.cmds, err = cache.RC.LRange(m.Ctx, fmt.Sprintf(hisCmdsFmt, m.currentUser.GetUid()), -100, -1).Result()
m.cmdsIdx = len(m.cmds)
return err
})
if err := eg.Wait(); err != nil {
logger.L().Error("refresh failed", zap.Error(err))
return
}
}
func (m *view) magicn() tea.Msg {
m.w.Write([]byte("\n"))
return nil
}
func (m *view) getRecentSessions() ([]*model.Session, error) {
sessionRepo := repository.NewSessionRepository()
return sessionRepo.GetRecentSessionsByUser(m.gctx, m.currentUser.GetUid(), 20)
}
func (m *view) RecordHisCmd() {
k := fmt.Sprintf(hisCmdsFmt, m.currentUser.GetUid())
cache.RC.RPush(m.Ctx, k, m.cmds)
cache.RC.LTrim(m.Ctx, k, -100, -1)
cache.RC.Expire(m.Ctx, k, time.Hour*24*30)
}
// getFilteredSuggestions returns suggestions that match the input
func (m *view) getFilteredSuggestions(input string) []string {
if input == "" {
return nil
}
inputLower := strings.ToLower(input)
var matches []string
for cmd := range m.combines {
// Clean any potential issues with the command string
cmd = strings.TrimSpace(cmd)
if cmd == "" {
continue
}
if strings.HasPrefix(strings.ToLower(cmd), inputLower) {
// Ensure we're not adding empty or malformed entries
if len(cmd) > len(inputLower) {
matches = append(matches, cmd)
}
}
}
// Sort matches for consistent ordering
sort.Strings(matches)
// Remove any duplicates (shouldn't happen but just in case)
if len(matches) > 1 {
unique := make([]string, 0, len(matches))
prev := ""
for _, m := range matches {
if m != prev {
unique = append(unique, m)
prev = m
}
}
matches = unique
}
return matches
}
// findCommonPrefix finds the longest common prefix among suggestions
func (m *view) findCommonPrefix(suggestions []string) string {
if len(suggestions) == 0 {
return ""
}
if len(suggestions) == 1 {
return suggestions[0]
}
// Start with the first suggestion
prefix := suggestions[0]
// Compare with each other suggestion
for _, s := range suggestions[1:] {
// Find common prefix between current prefix and this suggestion
i := 0
minLen := min(len(prefix), len(s))
for i < minLen && strings.EqualFold(string(prefix[i:i+1]), string(s[i:i+1])) {
i++
}
prefix = prefix[:i]
if len(prefix) == 0 {
return ""
}
}
return prefix
}
type connector struct {
Ctx *gin.Context
Sess ssh.Session
Vw *view
stdin io.Reader
stdout io.Writer
stderr io.Writer
gctx context.Context
}
func (conn *connector) SetStdin(r io.Reader) {
conn.stdin = r
}
func (conn *connector) SetStdout(w io.Writer) {
conn.stdout = w
}
func (conn *connector) SetStderr(w io.Writer) {
conn.stderr = w
}
func (conn *connector) Run() error {
gsess, err := myConnector.DoConnect(conn.Ctx, nil)
if err != nil {
return err
}
conn.Vw.magicn()
r, w := io.Pipe()
go func() {
defer w.Close()
_, err := io.Copy(w, conn.stdin)
// Don't block on sending error - HandleTerm may have already returned
select {
case gsess.Chans.ErrChan <- err:
default:
// Channel is closed or no one is listening, just return
}
}()
gsess.CliRw = &session.CliRW{
Reader: bufio.NewReader(r),
Writer: conn.stdout,
}
_, ch, ok := conn.Sess.Pty()
if !ok {
ch = make(<-chan ssh.Window)
}
gsess.G.Go(func() (err error) {
defer r.Close()
defer w.Close()
for {
select {
case <-gsess.Chans.AwayChan:
return
case <-conn.gctx.Done():
gsess.Once.Do(func() { close(gsess.Chans.AwayChan) })
return
case <-gsess.Gctx.Done():
return
case w := <-ch:
// Non-blocking send to WindowChan
// Some protocols (like telnet) don't handle window changes
select {
case gsess.Chans.WindowChan <- w:
default:
// If no one is listening, just ignore
}
}
}
})
myConnector.HandleTerm(gsess, nil)
if err = gsess.G.Wait(); err != nil {
// Check if this is the normal termination sentinel error
if err.Error() == "session closed normally" {
logger.L().Debug("sshsrv session ended normally", zap.String("sessionId", gsess.SessionId))
} else {
logger.L().Debug("sshsrv run stopped", zap.String("sessionId", gsess.SessionId), zap.Error(err))
}
}
conn.stdout.Write([]byte("\n\n"))
return nil
}