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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 16:49:13 +00:00
committed by GitHub
parent d5b283dca8
commit ecfbd686b8
20 changed files with 1470 additions and 158 deletions
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9
client/ssh/proxy/proxy.go
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@@ -610,13 +610,10 @@ func (p *SSHProxy) dialBackend(ctx context.Context, addr, user, jwtToken string)
return nil, fmt.Errorf("connect to server: %w", err)
}
clientConn, chans, reqs, err := cryptossh.NewClientConn(conn, addr, config)
if err != nil {
_ = conn.Close()
return nil, fmt.Errorf("SSH handshake: %w", err)
}
handshakeCtx, cancel := context.WithTimeout(ctx, sshHandshakeTimeout)
defer cancel()
return cryptossh.NewClient(clientConn, chans, reqs), nil
return nbssh.Handshake(handshakeCtx, conn, addr, config)
}
func (p *SSHProxy) verifyHostKey(hostname string, remote net.Addr, key cryptossh.PublicKey) error {