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[client, android] Expose ssh functionality for Android (#7156)

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Adds an SSHClient gomobile binding so the Android app can run an SSH session over the tunnel with a PTY, exposed through a listener interface for the in-app terminal.

Server type is auto-detected from the SSH banner, which selects the auth path: JWT device-code flow, NetBird key, or a regular server (NetBird key first, then password). Host keys are verified against the peer registry for NetBird servers and trust-on-first-use for regular ones.
This commit is contained in:
Zoltan Papp
2026-08-18 18:49:13 +02:00
committed by GitHub
parent d5b283dca8
commit ecfbd686b8
20 changed files with 1470 additions and 158 deletions
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client/ssh/client/client.go
+8 -6
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@@ -313,21 +313,23 @@ func Dial(ctx context.Context, addr, user string, opts DialOptions) (*Client, er
// dialSSH establishes an SSH connection without JWT authentication
func dialSSH(ctx context.Context, network, addr string, config *ssh.ClientConfig) (*Client, error) {
if config.Timeout > 0 {
var cancel context.CancelFunc
ctx, cancel = context.WithTimeout(ctx, config.Timeout)
defer cancel()
}
dialer := &net.Dialer{}
conn, err := dialer.DialContext(ctx, network, addr)
if err != nil {
return nil, fmt.Errorf("dial %s: %w", addr, err)
}
clientConn, chans, reqs, err := ssh.NewClientConn(conn, addr, config)
client, err := nbssh.Handshake(ctx, conn, addr, config)
if err != nil {
if closeErr := conn.Close(); closeErr != nil {
log.Debugf("connection close after handshake failure: %v", closeErr)
}
return nil, fmt.Errorf("ssh handshake: %w", err)
return nil, err
}
client := ssh.NewClient(clientConn, chans, reqs)
return &Client{
client: client,
}, nil