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X11vnc dan foydalanganda mahalliy konsolni o'chiring

Hammaga salom,

Mavjud Xorg seansiga x11vnc orqali masofaviy ulanishni qanday o'rnatish haqida Internetda ko'plab maqolalar mavjud, ammo men mahalliy monitor va kirishni qanday qilib bostirish kerakligini hech qaerda topolmadim, shunda masofaviy kompyuter yonida o'tirgan har bir kishi buni amalga oshiradi. nima qilayotganingizni ko'rmaydi va seansingizda tugmalarni bosmaydi. Kesim ostida mening x11vnc-ni RDP orqali Windows-ga ulanishga o'xshash qilish usulim keltirilgan.

Aytaylik, siz x11vnc dan qanday foydalanishni allaqachon bilasiz, agar bo'lmasa, masalan, google yoki o'qishingiz mumkin shu yerda.

May: biz x11nvc-ni ishga tushiramiz, unga mijoz bilan ulanamiz, hamma narsa ishlaydi, lekin kompyuterning mahalliy konsoli ham ko'rish va kiritish uchun mavjud.

Biz xohlaymiz: mahalliy konsolni (monitor + klaviatura + sichqonchani) o'chiring, shunda hech narsa ko'rinmaydi yoki kiritilmaydi.

Monitorlarni o'chirish

Aqlga kelgan birinchi narsa shunchaki xrandr orqali monitorni o'chirish edi, masalan:

$ xrandr --output CRT1 --off

lekin shu bilan birga, deraza muhiti (menda KDE bor) monitor haqiqatan ham o'chirilgan deb o'ylay boshlaydi va derazalar va panellarni tashlay boshlaydi, hamma narsa tashqariga siljiydi va g'amgin bo'ladi.
Monitorni kutish rejimiga o'tkazishning qiziqroq usuli bor, masalan, buni quyidagicha qilishingiz mumkin:

$ xset dpms force off

lekin bu erda ham hamma narsa silliq emas. Tizim birinchi hodisada monitorni uyg'otadi. Tsikl ko'rinishidagi eng oddiy tayoq yordam beradi:

while :
do
    xset dpms force off
    sleep .5
done

Men bundan keyin o'ylamadim - men dangasa edim, bu o'z maqsadiga xizmat qiladi - monitorlar hech narsani ko'rsatmaydi, hatto tugmachalarni bossam ham, sichqonchani harakatlantirsam ham va hokazo.

UPS:

Rahmat amarao yorqinlikni nolga aylantirish bilan boshqa usul uchun:

$ xrandr --output CRT1 --brightness 0

Kirishni kesib tashlash

Kirishni o'chirish uchun xinput dan foydalandim. Parametrlarsiz ishga tushirilganda, u qurilmalar ro'yxatini ko'rsatadi:

$ xinput
⎑ Virtual core pointer                          id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]
⎜   ↳ Logitech USB Laser Mouse                  id=9    [slave  pointer  (2)]
⎣ Virtual core keyboard                         id=3    [master keyboard (2)]
    ↳ Virtual core XTEST keyboard               id=5    [slave  keyboard (3)]
    ↳ Power Button                              id=6    [slave  keyboard (3)]
    ↳ Power Button                              id=7    [slave  keyboard (3)]
    ↳ Sleep Button                              id=8    [slave  keyboard (3)]
    ↳ USB 2.0 Camera: HD 720P Webcam            id=10   [slave  keyboard (3)]
    ↳ HID 041e:30d3                             id=11   [slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard              id=12   [slave  keyboard (3)]

Qurilmalar Virtual yadro... siz uni o'chira olmaysiz - xato ko'rsatiladi, ammo qolganlarini yoqish va o'chirish mumkin, masalan, siz bir daqiqaga sichqonchasiz qolishingiz mumkin:

xinput disable 9; sleep 60; xinput enable 9

Tayyor yechim

Mening ishim uchun men ssh sessiyasida ishlaydigan skript yaratdim. U mahalliy kirishni bostiradi va x11vnc serverini ko'taradi va skript tugagandan so'ng hamma narsa avvalgidek qaytadi. Natijada, biz uchta skript oldik, ular mana (yangilangan).

switch_local_console:

#!/bin/sh

case $1 in
    1|on)
    desired=1
    ;;
    0|off)
    desired=0
    ;;
    *)
    echo "USAGE: $0 0|1|on|off"
    exit 1
    ;;
esac

keyboards=`xinput | grep -v "XTEST" | grep "slave  keyboard" | sed -re 's/^.*sid=([0-9]+)s.*$/1/'`
mouses=`xinput | grep -v "XTEST" | grep "slave  pointer" | sed -re 's/^.*sid=([0-9]+)s.*$/1/'`
monitors=`xrandr | grep " connected" | sed -re 's/^(.+) connected.*$/1/'`

for device in $mouses
do
    xinput --set-prop $device "Device Enabled" $desired
done

for device in $keyboards
do
    xinput --set-prop $device "Device Enabled" $desired
done

for device in $monitors
do
    xrandr --output $device --brightness $desired
done

disable_local_console:

#!/bin/sh

trap "switch_local_console 1" EXIT

while :
do
    switch_local_console 0
    sleep 1
done

Aslida, asosiy skript (menda ikkita monitor bor, men bitta umumiy server va har bir monitor uchun bittadan o'rnatdim).

vnc_server:

#!/bin/bash

[[ ":0" == "$DISPLAY" ]] && echo "Should be run under ssh session" && exit 1

export DISPLAY=:0

killall x11vnc

rm -r /tmp/x11vnc
mkdir -p /tmp/x11vnc/{5900,5901,5902}

params="-fixscreen V=5 -forever -usepw -noxkb -noxdamage -repeat -nevershared"

echo "Starting VNC servers"

x11vnc -rfbport 5900 $params 2>&1 | tinylog -k 2 -r /tmp/x11vnc/5900 &
x11vnc -rfbport 5901 $params -clip 1920x1080+0+0 2>&1 | tinylog -k 2 -r /tmp/x11vnc/5901 &
x11vnc -rfbport 5902 $params -clip 1920x1080+1920+0 2>&1 | tinylog -k 2 -r /tmp/x11vnc/5902 &

echo "Waiting VNC servers"
while [ `ps afx | grep -c "x11vnc -rfbport"` -ne "4" ]
do
    sleep .5
done

echo "Disabling local console"
disable_local_console

echo "Killing VNC servers"
killall x11vnc

Ana xolos. Ssh orqali tizimga kiring va ishga tushiring vnc_server, u tirik ekan, biz vnc orqali kirishga egamiz va mahalliy konsol o'chadi.

E'tiboringiz uchun rahmat, qo'shimchalar va yaxshilanishlar qabul qilinadi.

Manba: www.habr.com

a Izoh qo'shish