Plan9/Vnc
How to connect from Plan9 to MacOS using vnc…
term% @{ramfs ; cd /tmp ; hget https://9lab.org/vid/plan9/vnc.mp4 > vnc.mp4 && treason vnc.mp4}
The above screencast was recorded on 9front Community vs. Infrastructure using wrec running on a Lenovo T420s featuring the program vncv that is used to log into a remote MacOS Big Sur system using the VNC Protocol (i.e. VNC).
The default vnc can not connect to MacOS Big Sur:
term% vncv steve.9lab.home
vncv: authentication failure: unknown auth type 0x51e2124
This issue has been resolved on 9front vnc in patch. If you do not use 9front the following patch should resolve the connection issue:
term% cat cmd.vnc.auth.c.patch
From: Igor Böhm <igor@9lab dot org>
Date: Wed, 22 Sep 2021 06:36:54 +0000
Subject: [PATCH] vnc: enable connecting to Darwin
Tested on MacOS Catalina and Big Sur releases.
---
diff 61f37abf576a02c7f1e3561cfaba3c0457f55c9d de22c9e5d93042f458a1e6c4b7f8ef97c1f68c2a
--- a/sys/src/cmd/vnc/auth.c Fri Aug 27 16:13:11 2021
+++ b/sys/src/cmd/vnc/auth.c Wed Sep 22 08:36:54 2021
@@ -33,6 +33,8 @@
v->vers = 37;
else if(strncmp(msg, "RFB 003.008\n", VerLen) == 0)
v->vers = 38;
+ else if(strncmp(msg, "RFB 003.889\n", VerLen) == 0)
+ v->vers = 38; /* Darwin */
else /* RFC6143: Any other should be treated as 3.3. */
v->vers = 33;
Simply git/import the above patch and rebuild vnc:
% bind -ac /dist/plan9front /
% git/branch -n feature/vnc-darwin-patch
refs/heads/feature/vnc-darwin-patch: 61f37abf576a02c7f1e3561cfaba3c0457f55c9d
% git/import cmd.vnc.auth.c.patch
applying vnc: enable connecting to Darwin
M sys/src/cmd/vnc/auth.c
% cd /sys/src/cmd/vnc
% mk install
…
% mk clean
NOTE that the above applied the patch in a branch (feature/vnc-darwin-patch). You could also import the patch onto the front main development branch.
Next, run ipso in a new window, adding an entry to factotum for authentication to work automatically. Here a sample entry:
key proto=vnc server=steve.9lab.home !password=St3v3J0bS?
Before you can get started there is one crucial setting that you have make on MacOS:
MacOS - Screen Sharing System Setting: Check VNC viewers may control screen with password…
Finally, this is how to start a VNC connection via vncv to a MacOS system:
% vncv steve.9lab.home
And here is the above screencast on youtube: