hotfix: add platform for cmd ssh

cmd/kubevpn/cmds/ssh.go

@@ -7,6 +7,7 @@ import (
 	"io"
 	"os"
 
+	"github.com/containerd/containerd/platforms"
 	"github.com/google/uuid"
 	log "github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
@@ -28,6 +29,7 @@ import (
 func CmdSSH(_ cmdutil.Factory) *cobra.Command {
 	var sshConf = &pkgssh.SshConfig{}
 	var extraCIDR []string
+	var platform string
 	cmd := &cobra.Command{
 		Use:   "ssh",
 		Short: "Ssh to jump server",
@@ -54,6 +56,10 @@ func CmdSSH(_ cmdutil.Factory) *cobra.Command {
 			return daemon.StartupDaemon(cmd.Context())
 		},
 		RunE: func(cmd *cobra.Command, args []string) error {
+			parse, err2 := platforms.Parse(platform)
+			if err2 != nil {
+				return err2
+			}
 			config, err := websocket.NewConfig("ws://test/ws", "http://test")
 			if err != nil {
 				return err
@@ -77,6 +83,7 @@ func CmdSSH(_ cmdutil.Factory) *cobra.Command {
 				ExtraCIDR: extraCIDR,
 				Width:     width,
 				Height:    height,
+				Platform:  platforms.Format(platforms.Normalize(parse)),
 				SessionID: sessionID,
 			}
 			bytes, err := json.Marshal(ssh)
@@ -117,6 +124,7 @@ func CmdSSH(_ cmdutil.Factory) *cobra.Command {
 	}
 	pkgssh.AddSshFlags(cmd.Flags(), sshConf)
 	cmd.Flags().StringArrayVar(&extraCIDR, "extra-cidr", []string{}, "Extra network CIDR string, eg: --extra-cidr 192.168.0.159/24 --extra-cidr 192.168.1.160/32")
+	cmd.Flags().StringVar(&platform, "platform", util.If(os.Getenv("KUBEVPN_DEFAULT_PLATFORM") != "", os.Getenv("KUBEVPN_DEFAULT_PLATFORM"), "linux/amd64"), "Set ssh server platform if needs to install command kubevpn")
 	return cmd
 }
 

pkg/daemon/handler/ssh.go

@@ -17,6 +17,8 @@ import (
 	"sync"
 	"time"
 
+	"github.com/containerd/containerd/platforms"
+	specs "github.com/opencontainers/image-spec/specs-go/v1"
 	log "github.com/sirupsen/logrus"
 	"golang.org/x/crypto/ssh"
 	"golang.org/x/net/websocket"
@@ -38,6 +40,7 @@ type wsHandler struct {
 	width     int
 	height    int
 	sessionId string
+	platform  specs.Platform
 	condReady context.CancelFunc
 }
 
@@ -240,7 +243,7 @@ func (w *wsHandler) terminal(ctx context.Context, cli *ssh.Client, conn io.ReadW
 		ssh.TTY_OP_ISPEED: 14400,
 		ssh.TTY_OP_OSPEED: 14400,
 	}
-	if err = session.RequestPty("xterm", height, width, modes); err != nil {
+	if err = session.RequestPty("xterm-256color", height, width, modes); err != nil {
 		w.Log("Request pty error: %v", err)
 		return err
 	}
@@ -270,7 +273,7 @@ func (w *wsHandler) installKubevpnOnRemote(ctx context.Context, sshClient *ssh.C
 	if config.GitHubOAuthToken != "" {
 		client = oauth2.NewClient(ctx, oauth2.StaticTokenSource(&oauth2.Token{AccessToken: config.GitHubOAuthToken, TokenType: "Bearer"}))
 	}
-	latestVersion, url, err := util.GetManifest(client, "linux", "amd64")
+	latestVersion, url, err := util.GetManifest(client, w.platform.OS, w.platform.Architecture)
 	if err != nil {
 		w.Log("Get latest kubevpn version failed: %v", err)
 		return err
@@ -346,6 +349,7 @@ type Ssh struct {
 	ExtraCIDR []string
 	Width     int
 	Height    int
+	Platform  string
 	SessionID string
 }
 
@@ -370,6 +374,7 @@ func init() {
 			width:     conf.Width,
 			height:    conf.Height,
 			sessionId: conf.SessionID,
+			platform:  platforms.MustParse(conf.Platform),
 			condReady: cancelFunc,
 		}
 		CondReady[conf.SessionID] = ctx

pkg/ssh/ssh.go

@@ -430,7 +430,7 @@ func (config SshConfig) Dial(ctx context.Context, stopChan <-chan struct{}) (cli
 		User:            config.User,
 		Auth:            authMethod,
 		HostKeyCallback: ssh.InsecureIgnoreHostKey(),
-		BannerCallback:  ssh.BannerDisplayStderr(),
+		//BannerCallback:  ssh.BannerDisplayStderr(),
 		Timeout: time.Second * 10,
 	})
 	if err != nil {
@@ -484,7 +484,7 @@ func JumpTo(ctx context.Context, bClient *ssh.Client, to SshConfig, stopChan <-c
 		User:            to.User,
 		Auth:            authMethod,
 		HostKeyCallback: ssh.InsecureIgnoreHostKey(),
-		BannerCallback:  ssh.BannerDisplayStderr(),
+		//BannerCallback:  ssh.BannerDisplayStderr(),
 		Timeout: time.Second * 10,
 	})
 	if err != nil {
@@ -596,6 +596,14 @@ func PortMapUntil(ctx context.Context, conf *SshConfig, remote, local netip.Addr
 				defer cancelFunc3()
 				conn, err = client.DialContext(ctx3, "tcp", remote.String())
 				if err != nil {
+					var openChannelError *ssh.OpenChannelError
+					// if ssh server not permitted ssh port-forward, do nothing until exit
+					if errors.As(err, &openChannelError) && openChannelError.Reason == ssh.Prohibited {
+						_ = client.Close()
+						log.Debugf("Failed to open ssh port-forward: %s: %v", remote.String(), err)
+						<-connCtx.Done()
+						return nil, err
+					}
 					log.Debugf("Failed to dial remote addr: %s: %v", remote.String(), err)
 					client.Close()
 					return nil, err