Can I connect to wayvnc without any password?

[MariuszFerdyn]

Can I connect to wayvnc without any password? If so what config should I use? Always I see:

Mar 13 22:14:06 pi-0-2w-ros xrdp[3212]: [INFO ] VNC tcp connected
Mar 13 22:14:06 pi-0-2w-ros xrdp[3212]: [INFO ] VNC security level is 0 (1 = none, 2 = standard)

Any idea?

[matt335672]

Hi @MariuszFerdyn

A security level of zero means the connection has failed already. Have a look at the description of security-type under version 3.3 of the protocol at this link:-
https://github.com/rfbproto/rfbproto/blob/master/rfbproto.rst#security

I'm guessing, as this is really early on in the hanshshake, but I suspect that wayvnc doesn't like the version of 3.3.

I've had a poke about in the sources. wayvnc depends on the neatvnc library. This looks like it only supports version 3.8 of the protocol:-

https://github.com/any1/neatvnc/blob/5d65595fc71f2dad6368d81003b5e7003a80c0c5/src/server.c#L332-L333

and:-

https://github.com/any1/neatvnc/blob/5d65595fc71f2dad6368d81003b5e7003a80c0c5/include/rfb-proto.h#L19

We've got a PR to support more recent versions of RFB at #2549, but the OP went quiet on me. Since this looks like it might be very useful, I'll investigate picking up the good work done there, and see if we can get something implemented.

What version of xrdp are you running?

[MariuszFerdyn]

I can connect to wayvnc using tightvnc, the protocol:

Connected to: WayVNC
Host: xxx port: 5900

Desktop geometry: 1920 x 1080 x 24
Using depth: 24
Current protocol version: 3.8

Current keyboard name: 00000415

xrdp with this is not working - xrdp details:
xrdp 0.9.21.1
A Remote Desktop Protocol Server.
Copyright (C) 2004-2020 Jay Sorg, Neutrino Labs, and all contributors.
See https://github.com/neutrinolabs/xrdp for more information.

Configure options:
--enable-ipv6
--enable-jpeg
--enable-fuse
--enable-rfxcodec
--enable-opus
--enable-painter
--enable-vsock
--build=aarch64-linux-gnu
--prefix=/usr
--includedir=${prefix}/include
--mandir=${prefix}/share/man
--infodir=${prefix}/share/info
--sysconfdir=/etc
--localstatedir=/var
--disable-silent-rules
--libdir=${prefix}/lib/aarch64-linux-gnu
--libexecdir=${prefix}/lib/aarch64-linux-gnu
--disable-maintainer-mode
--disable-dependency-tracking
--with-socketdir=/run/xrdp/sockdir
build_alias=aarch64-linux-gnu
CFLAGS=-g -O2 -ffile-prefix-map=/build/xrdp-xCPoG3/xrdp-0.9.21.1=. -fstack-protector-strong -Wformat -Werror=format-security
LDFLAGS=-Wl,-z,relro -Wl,-z,now -Wl,--as-needed
CPPFLAGS=-Wdate-time -D_FORTIFY_SOURCE=2
PKG_CONFIG_PATH=/build/xrdp-xCPoG3/xrdp-0.9.21.1/pkgconfig

Compiled with OpenSSL 3.0.15 3 Sep 2024

[matt335672]

Indeed:-

Current protocol version: 3.8

[MariuszFerdyn]

xrdp works with 3.6? Not 3.8? Any plans for 3.8?

[matt335672]

Please re-read what I wrote above. I believe that answers your questions.

[matt335672]

See #3460. The lack of support for RFB version 3.8 was the only think preventing this from working.