feat: remote assistance — deploy locally or open tunnel for admin

Startup flow now offers:
- [1] Deploy locally — config wizard, deploys on this server
- [2] Remote assistance — prompts for jumphost URL, user, password
  (or SSH key path), opens reverse TLS:443 tunnel so a remote admin
  can connect and run deployment through their terminal.

Tunnel now supports password auth in addition to key auth.

.gitignore

@@ -12,3 +12,4 @@ wallarm
 bin/
 wallarm-upx
 bin/
+wallarm-linux-amd64

internal/tunnel/tunnel.go

@@ -22,6 +22,7 @@ type Config struct {
 	RemotePort   int    // Port on the jumphost that forwards to target's SSH
 	LocalSSHPort int    // SSH port on the target VM (usually 22)
 	User         string // SSH user on the jumphost
+	Password     string // Password auth (takes lowest priority)
 	KeyPath      string // Path to private key for authentication
 	KeyBytes     []byte // Raw private key bytes (takes precedence over KeyPath)
 }
@@ -39,32 +40,37 @@ func DefaultConfig() Config {
 // Start opens a reverse SSH tunnel over TLS and keeps it alive.
 // It blocks until SIGINT or connection failure.
 func Start(cfg Config) error {
-	// Load the private key
-	var signer ssh.Signer
+	// Build auth methods
+	var authMethods []ssh.AuthMethod
+
 	if len(cfg.KeyBytes) > 0 {
-		var err error
-		signer, err = ssh.ParsePrivateKey(cfg.KeyBytes)
-		if err != nil {
-			return fmt.Errorf("parse embedded key: %w", err)
+		signer, err := ssh.ParsePrivateKey(cfg.KeyBytes)
+		if err == nil {
+			authMethods = append(authMethods, ssh.PublicKeys(signer))
 		}
-	} else {
+	}
+	if cfg.KeyPath != "" {
 		keyBytes, err := os.ReadFile(cfg.KeyPath)
-		if err != nil {
-			return fmt.Errorf("read key %s: %w", cfg.KeyPath, err)
-		}
-		signer, err = ssh.ParsePrivateKey(keyBytes)
-		if err != nil {
-			return fmt.Errorf("parse key: %w", err)
+		if err == nil {
+			signer, err := ssh.ParsePrivateKey(keyBytes)
+			if err == nil {
+				authMethods = append(authMethods, ssh.PublicKeys(signer))
+			}
 		}
 	}
+	if cfg.Password != "" {
+		authMethods = append(authMethods, ssh.Password(cfg.Password))
+	}
+
+	if len(authMethods) == 0 {
+		return fmt.Errorf("no authentication method configured (provide key or password)")
+	}
 
 	sshConfig := &ssh.ClientConfig{
-		User: cfg.User,
-		Auth: []ssh.AuthMethod{ssh.PublicKeys(signer)},
-		HostKeyCallback: func(hostname string, remote net.Addr, key ssh.PublicKey) error {
-			return nil // Accept all host keys (trusted infrastructure)
-		},
-		Timeout: 10 * time.Second,
+		User:            cfg.User,
+		Auth:            authMethods,
+		HostKeyCallback: ssh.InsecureIgnoreHostKey(), // trusted infrastructure
+		Timeout:         10 * time.Second,
 	}
 
 	// TLS dial to the Zoraxy edge (port 443)

internal/ui/ui.go

@@ -15,6 +15,7 @@ import (
 	"git.sechpoint.app/customer-engineering/wallarm/internal/native"
 	"git.sechpoint.app/customer-engineering/wallarm/internal/preflight"
 	"git.sechpoint.app/customer-engineering/wallarm/internal/state"
+	"git.sechpoint.app/customer-engineering/wallarm/internal/tunnel"
 )
 
 // Styles
@@ -29,11 +30,14 @@ var (
 
 // Model is the top-level bubbletea model.
 type Model struct {
-	state    stateView
-	width    int
-	height   int
-	status   string      // feedback message during deployment
-	deploying bool       // true while deployment is in progress
+	state      stateView
+	width      int
+	height     int
+	status     string // feedback message during deployment
+	deploying  bool   // true while deployment is in progress
+	tunnelUser string // tunnel credentials (collected in remote config)
+	tunnelPass string
+	tunnelHost string
 }
 
 type stateView int
@@ -41,6 +45,9 @@ type stateView int
 const (
 	viewPreflight stateView = iota
 	viewRoute
+	viewDeployChoice   // new: local deploy or remote assist?
+	viewRemoteConfig   // new: prompt for tunnel credentials
+	viewTunnelActive   // new: tunnel is running, waiting for remote admin
 	viewWizard
 	viewDashboard
 	viewDone
@@ -73,10 +80,26 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		switch msg.String() {
 		case "q", "ctrl+c":
 			return m, tea.Quit
-		case "1", "2":
+		case "1":
+			if m.state == viewDeployChoice {
+				m.state = viewWizard
+				return m, nil
+			}
 			if m.state == viewWizard && !m.deploying {
 				return m, m.startDeploy()
 			}
+		case "2":
+			if m.state == viewDeployChoice {
+				m.state = viewRemoteConfig
+				return m, nil
+			}
+		case "s":
+			if m.state == viewRemoteConfig && m.tunnelHost == "" {
+				return m, m.collectTunnelCreds()
+			}
+			if m.state == viewRemoteConfig && m.tunnelHost != "" {
+				return m, m.startTunnel()
+			}
 		case "enter":
 			if m.state == viewDone || m.state == viewError {
 				return m, tea.Quit
@@ -92,6 +115,14 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 			m.state = viewDone
 		}
 		return m, nil
+	case tunnelCredsMsg:
+		if msg.err != nil {
+			m.status = fmt.Sprintf("Could not collect credentials: %v", msg.err)
+			m.state = viewError
+		} else {
+			m.state = viewRemoteConfig // refresh to show collected creds
+		}
+		return m, nil
 	case tea.WindowSizeMsg:
 		m.width = msg.Width
 		m.height = msg.Height
@@ -102,7 +133,7 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		if state.HasDeployment() {
 			m.state = viewDashboard
 		} else {
-			m.state = viewWizard
+			m.state = viewDeployChoice
 		}
 	}
 	return m, nil
@@ -112,6 +143,12 @@ func (m Model) View() string {
 	switch m.state {
 	case viewRoute:
 		return ""
+	case viewDeployChoice:
+		return deployChoiceView(m)
+	case viewRemoteConfig:
+		return remoteConfigView(m)
+	case viewTunnelActive:
+		return tunnelActiveView(m)
 	case viewWizard:
 		return wizardView(m)
 	case viewDashboard:
@@ -124,7 +161,57 @@ func (m Model) View() string {
 	return ""
 }
 
-// startDeploy runs the Huh form in a goroutine, then deploys.
+// collectTunnelCreds runs a huh form to collect tunnel endpoint details.
+func (m Model) collectTunnelCreds() tea.Cmd {
+	return func() tea.Msg {
+		var host, user, pass string
+		err := huh.NewForm(
+			huh.NewGroup(
+				huh.NewInput().
+					Title("Jumphost URL").
+					Placeholder("ssh.sechpoint.app:443").
+					Value(&host),
+				huh.NewInput().
+					Title("Username").
+					Placeholder("wallarm-tunnel").
+					Value(&user),
+				huh.NewInput().
+					Title("Password (or SSH key path)").
+					Placeholder("password or /path/to/key").
+					EchoMode(huh.EchoModePassword).
+					Value(&pass),
+			),
+		).WithTheme(huh.ThemeCharm()).Run()
+
+		m.tunnelHost = host
+		m.tunnelUser = user
+		m.tunnelPass = pass
+		return tunnelCredsMsg{err: err}
+	}
+}
+
+type tunnelCredsMsg struct{ err error }
+
+// startTunnel opens the reverse SSH tunnel with collected credentials.
+func (m Model) startTunnel() tea.Cmd {
+	return func() tea.Msg {
+		cfg := tunnel.Config{
+			Jumphost:     m.tunnelHost,
+			User:         m.tunnelUser,
+			Password:     m.tunnelPass,
+			RemotePort:   9042,
+			LocalSSHPort: 22,
+		}
+		// If password looks like a file path, use key auth instead
+		if strings.HasPrefix(m.tunnelPass, "/") {
+			cfg.Password = ""
+			cfg.KeyPath = m.tunnelPass
+		}
+
+		err := tunnel.Start(cfg)
+		return deployCompleteMsg{err: err}
+	}
+}
 func (m Model) startDeploy() tea.Cmd {
 	return func() tea.Msg {
 		m.deploying = true
@@ -145,7 +232,50 @@ func (m Model) startDeploy() tea.Cmd {
 	}
 }
 
-// ─── Wizard ──────────────────────────────────────────────────────────
+// ─── Deploy Choice ───────────────────────────────────────────────────
+
+func deployChoiceView(m Model) string {
+	s := titleStyle.Render("🛡️  Wallarm Setup") + "\n\n"
+	s += "How would you like to proceed?\n\n"
+	s += activeStyle.Render("  [1] Deploy locally") + "\n"
+	s += "      Configure and deploy the Wallarm node on this server now.\n\n"
+	s += activeStyle.Render("  [2] Remote assistance") + "\n"
+	s += "      Open a secure tunnel so a remote admin can deploy for you.\n"
+	s += "      No credentials are exposed — you provide the tunnel endpoint.\n\n"
+	s += dimStyle.Render("Press 1 or 2, q to quit")
+	return s
+}
+
+// ─── Remote Config ───────────────────────────────────────────────────
+
+func remoteConfigView(m Model) string {
+	s := titleStyle.Render("🔗 Remote Assistance Setup") + "\n\n"
+	s += "Enter the tunnel endpoint where the remote admin will connect:\n\n"
+
+	if m.tunnelHost == "" {
+		s += dimStyle.Render("  (Form will appear below — enter values and press Enter to continue)") + "\n"
+		s += dimStyle.Render("  Press 's' to start the tunnel after filling in credentials") + "\n"
+	} else {
+		s += fmt.Sprintf("  Jumphost: %s\n", goodStyle.Render(m.tunnelHost))
+		s += fmt.Sprintf("  User:     %s\n", m.tunnelUser)
+		s += dimStyle.Render("\n  Tunnel credentials collected. Press 's' to start.") + "\n"
+	}
+	return s
+}
+
+// ─── Tunnel Active ───────────────────────────────────────────────────
+
+func tunnelActiveView(m Model) string {
+	s := titleStyle.Render("🔗 Tunnel Active") + "\n\n"
+	s += goodStyle.Render("Secure tunnel is running.") + "\n\n"
+	s += "Share this with your admin:\n"
+	s += dimStyle.Render("  ┌─────────────────────────────────────────┐") + "\n"
+	s += fmt.Sprintf("  │ %s", activeStyle.Render("ssh -p 9042 root@"+m.tunnelHost)) + dimStyle.Render(" │") + "\n"
+	s += dimStyle.Render("  └─────────────────────────────────────────┘") + "\n\n"
+	s += dimStyle.Render("The admin will see the deployment wizard on their terminal.") + "\n"
+	s += dimStyle.Render("Tunnel stays open until you press q.") + "\n"
+	return s
+}
 
 func wizardView(m Model) string {
 	s := titleStyle.Render("🛡️  Wallarm Setup Wizard") + "\n"