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License: GNU General Public License v2.0

Shell 8.79% C++ 89.61% Meson 1.60%

obmc-ikvm's Introduction

OpenBMC IpKVM Server

The obmc-ikvm application is a VNC server that provides access to the host graphics output. The application interfaces with the video device on the BMC that captures the host graphics, and then serves that video data on the RFB (remote framebuffer, also known as VNC) protocol. The application also interfaces with the BMC USB gadget device to pass HID events from the BMC to the host, allowing the user to interact with the host system.

Usage

Once the host is running and an appropriate HID gadget device is instantiated on the BMC, the application can be started with the following command: obmc-ikvm -v <video device path> -i <HID gadget device path>

For example:

obmc-ikvm -v /dev/video0 -i /dev/hidg0

obmc-ikvm's People

Contributors

Stargazers

Watchers

Forkers

felixkj123 sutiantang julbouln jaehyoo l12436 c0dergithub yikesx merz9b hellothere-yan

obmc-ikvm's Issues

IP KVM traces flooding journald if Host is not booted

Boot to standby and open the GUI KVM console.. and started seeing continously flooding the journald .. it keep pumping into journald till host is booted

Apr 26 07:32:08 witherspoon kernel[1159]: [ 1801.822025] configfs-gadget gadget: usb_ep_queue error on int endpoint -108
Apr 26 07:32:08 witherspoon kernel: aspeed-video 1e700000.video: Timed out; first mode detect
Apr 26 07:32:08 witherspoon kernel[1159]: [ 1802.366206] aspeed-video 1e700000.video: Timed out; first mode detect
Apr 26 07:32:09 witherspoon obmc-ikvm[1287]: Failed to query timings
Apr 26 07:32:10 witherspoon kernel: configfs-gadget gadget: usb_ep_queue error on int endpoint -108
Apr 26 07:32:10 witherspoon kernel[1159]: [ 1803.442656] configfs-gadget gadget: usb_ep_queue error on int endpoint -108
Apr 26 07:32:10 witherspoon kernel: configfs-gadget gadget: usb_ep_queue error on int endpoint -108
Apr 26 07:32:10 witherspoon kernel[1159]: [ 1803.473387] configfs-gadget gadget: usb_ep_queue error on int endpoint -108
Apr 26 07:32:10 witherspoon obmc-ikvm[1287]: Failed to write pointer report
Apr 26 07:32:10 witherspoon obmc-ikvm[1287]: Failed to write keyboard report
Apr 26 07:32:10 witherspoon kernel: aspeed-video 1e700000.video: Timed out; first mode detect
Apr 26 07:32:10 witherspoon kernel[1159]: [ 1804.026380] aspeed-video 1e700000.video: Timed out; first mode detect
Apr 26 07:32:11 witherspoon obmc-ikvm[1287]: Failed to query timings
Apr 26 07:32:11 witherspoon kernel: configfs-gadget gadget: usb_ep_queue error on int endpoint -108
Apr 26 07:32:11 witherspoon kernel[1159]: [ 1805.075262] configfs-gadget gadget: usb_ep_queue error on int endpoint -108
Apr 26 07:32:11 witherspoon obmc-ikvm[1287]: Failed to write pointer report
Apr 26 07:32:11 witherspoon obmc-ikvm[1287]: Failed to write keyboard report
Apr 26 07:32:11 witherspoon kernel: configfs-gadget gadget: usb_ep_queue error on int endpoint -108
Apr 26 07:32:11 witherspoon kernel[1159]: [ 1805.093531] configfs-gadget gadget: usb_ep_queue error on int endpoint -108
Apr 26 07:32:12 witherspoon kernel: aspeed-video 1e700000.video: Timed out; first mode detect
Apr 26 07:32:12 witherspoon kernel[1159]: [ 1805.636147] aspeed-video 1e700000.video: Timed out; first mode detect
Apr 26 07:32:13 witherspoon obmc-ikvm[1287]: Failed to query timings

KVM should provide --timeout option to timeout the VNC session after that idle period.

Background:
'bmcweb' have default [30-minutes session timeout ].(https://github.com/openbmc/bmcweb/blob/e01d0c36af115ed46d54b5dbbacfe3ad92226bd3/include/sessions.hpp#L424)

Issue:
KVM session opened is accessible from OpenBMC webUI even after bmcweb idle session timeout (30-minutes).
This could be legacy design, needed to do the uninterrupted host video access, say, SW installation going for more than 30 minutes.

Ask:
KVM should provide --timeout option to timeout the VNC session after that --timeout value.
i.e.) KVM should provide an option to start its session with a configured session timeout value and close the session automatically after that time.
This will be useful for users who want to enforce timeout on idle KVM sessions.

Using VNC Viewer to connect

I try to make a connection to BMC embeded VNC server from my laptop VNC viewer, but it's failed.
Does OpenBMC support this connection method?

Keyboard Super Keys (XK_Super_L & XK_Super_R) are not working

Description:

If I try to send the super keys then there is no response coming for it.
As I can see, super keys (XK_Super_L & XK_Super_R) are not configured with obmc-ikvm server.
Only for below modifiers the key codes has been added:

Can anyone help me out on this?
I need to add Super Keys with obmc-ikvm.
What are the scan codes for the Super keys?
@yoojae please reply on this !

How to run multiple obmc-ikvm on the same machine？

KVM not working

Hi,

KVM is not loaded on higher resolutions.
1680 x 1050
1920 x 1080
Tested using windows server.

Regards
Nikhil

why obmc-ikvm not support mouse wheel?

I see obmc-ikvm not support mouse wheel. Is that libvncserver cannot support?

use tightvnc to connect, probability failed

Hi, has any one meet this problem:

Then, when i use wireshake to capture net packet, when failed, the first frame server send to client as follow

If success, the first frame as follow

Do anyone can help me? Thanks very much for any advice!

obmc-ikvm daemon crashes during client close session

I was running a stress test to open/close kvm session from web frontend (webui-vue), about obmc-ikvm crashed with .5% possibility buffer overflow when the connection closed.

obmc-ikvm[547]: 25/08/2021 03:29:19 Enabling full-color cursor updates for client 127.0.0.1
obmc-ikvm[547]: 25/08/2021 03:29:19 Using tight encoding for client 127.0.0.1
obmc-ikvm[547]: 25/08/2021 03:29:19 Sending rfbEncodingExtDesktopSize for size (1024x768)
obmc-ikvm[547]: 25/08/2021 03:29:21 rfbSendUpdateBuf: write: Connection reset by peer
obmc-ikvm[547]: *** buffer overflow detected ***: terminated
systemd[1]: start-ipkvm.service: Main process exited, code=killed, status=6/ABRT
systemd[1]: start-ipkvm.service: Failed with result 'signal'.
systemd[1]: start-ipkvm.service: Scheduled restart job, restart counter is at 2.

The following code snip need to check the return value, if it return FALSE

obmc-ikvm/ikvm_server.cpp

Line 162 in 2d2f3da

rfbSendUpdateBuf(cl);

obmc-ikvm/ikvm_server.cpp

Line 175 in 2d2f3da

rfbSendUpdateBuf(cl);

Reference:
https://github.com/LibVNC/libvncserver/blob/2aa20dad4c23c18948d3f63b33f9dfec1f837729/libvncserver/rfbserver.c#L3609-L3628